/* roulang page: index */
:root {
            --color-primary: #00e5ff;
            --color-primary-glow: rgba(0, 229, 255, 0.6);
            --color-primary-dark: #00b8d4;
            --color-accent: #ffb300;
            --color-accent-glow: rgba(255, 179, 0, 0.5);
            --color-bg-dark: #0b0f19;
            --color-bg-darker: #060a12;
            --color-bg-card: #111827;
            --color-bg-section: #f8fafc;
            --color-bg-white: #ffffff;
            --color-text-primary: #1e293b;
            --color-text-secondary: #475569;
            --color-text-light: #94a3b8;
            --color-text-on-dark: #e2e8f0;
            --color-text-white: #ffffff;
            --color-border: #e2e8f0;
            --color-border-dark: #1e293b;
            --radius-sm: 8px;
            --radius-md: 12px;
            --radius-lg: 16px;
            --radius-xl: 20px;
            --radius-full: 50px;
            --shadow-sm: 0 1px 3px rgba(0, 0, 0, 0.06), 0 1px 2px rgba(0, 0, 0, 0.04);
            --shadow-md: 0 4px 16px rgba(0, 0, 0, 0.08), 0 2px 6px rgba(0, 0, 0, 0.04);
            --shadow-lg: 0 12px 32px rgba(0, 0, 0, 0.12), 0 4px 12px rgba(0, 0, 0, 0.06);
            --shadow-xl: 0 20px 48px rgba(0, 0, 0, 0.16), 0 8px 20px rgba(0, 0, 0, 0.08);
            --shadow-neon: 0 0 20px rgba(0, 229, 255, 0.4), 0 0 40px rgba(0, 229, 255, 0.15);
            --shadow-neon-accent: 0 0 18px rgba(255, 179, 0, 0.35), 0 0 36px rgba(255, 179, 0, 0.12);
            --transition-fast: 0.18s ease;
            --transition-smooth: 0.3s cubic-bezier(0.4, 0, 0.2, 1);
            --font-family-base: 'Segoe UI', 'PingFang SC', 'Microsoft YaHei', 'Helvetica Neue', Arial, sans-serif;
            --font-family-heading: 'PingFang SC', 'Microsoft YaHei', 'Helvetica Neue', Arial, sans-serif;
        }

        *,
        *::before,
        *::after {
            box-sizing: border-box;
        }

        html {
            scroll-behavior: smooth;
            -webkit-font-smoothing: antialiased;
            -moz-osx-font-smoothing: grayscale;
        }

        body {
            font-family: var(--font-family-base);
            line-height: 1.7;
            color: var(--color-text-primary);
            background-color: var(--color-bg-white);
            margin: 0;
            padding: 0;
            overflow-x: hidden;
        }

        img {
            max-width: 100%;
            height: auto;
            display: block;
        }

        a {
            text-decoration: none;
            color: inherit;
            transition: color var(--transition-fast);
        }

        a:focus-visible {
            outline: 2px solid var(--color-primary);
            outline-offset: 3px;
            border-radius: 3px;
        }

        button {
            cursor: pointer;
            font-family: inherit;
        }

        button:focus-visible {
            outline: 2px solid var(--color-primary);
            outline-offset: 3px;
            border-radius: 3px;
        }

        input {
            font-family: inherit;
        }

        .grid-container {
            max-width: 1200px;
            padding-left: 20px;
            padding-right: 20px;
        }

        @media (max-width: 640px) {
            .grid-container {
                padding-left: 16px;
                padding-right: 16px;
            }
        }

        /* ============ HEADER / NAVIGATION ============ */
        .site-header {
            background: var(--color-bg-dark);
            position: sticky;
            top: 0;
            z-index: 1000;
            border-bottom: 2px solid transparent;
            border-image: none;
            box-shadow: 0 2px 0 0 var(--color-primary);
            transition: box-shadow var(--transition-smooth);
        }

        .site-header.scrolled {
            box-shadow: 0 2px 0 0 var(--color-primary), var(--shadow-lg);
        }

        .nav-wrapper {
            display: flex;
            align-items: center;
            justify-content: space-between;
            padding: 0 0;
            min-height: 64px;
            position: relative;
        }

        .nav-logo {
            display: flex;
            align-items: center;
            gap: 10px;
            font-size: 1.35rem;
            font-weight: 700;
            color: var(--color-text-white);
            letter-spacing: 0.5px;
            white-space: nowrap;
            transition: text-shadow var(--transition-fast);
        }

        .nav-logo:hover {
            text-shadow: var(--shadow-neon);
            color: var(--color-primary);
        }

        .nav-logo .logo-icon {
            width: 38px;
            height: 38px;
            border-radius: var(--radius-sm);
            background: linear-gradient(135deg, var(--color-primary-dark), var(--color-primary));
            display: flex;
            align-items: center;
            justify-content: center;
            font-size: 1.1rem;
            color: #0b0f19;
            font-weight: 900;
            box-shadow: var(--shadow-neon);
        }

        .nav-links-desktop {
            display: flex;
            align-items: center;
            gap: 6px;
            list-style: none;
            margin: 0;
            padding: 0;
        }

        .nav-links-desktop li a {
            display: block;
            padding: 10px 16px;
            border-radius: var(--radius-full);
            color: var(--color-text-on-dark);
            font-size: 0.95rem;
            font-weight: 500;
            letter-spacing: 0.3px;
            position: relative;
            transition: all var(--transition-fast);
            white-space: nowrap;
        }

        .nav-links-desktop li a:hover {
            color: var(--color-primary);
            text-shadow: 0 0 8px rgba(0, 229, 255, 0.5);
            background: rgba(0, 229, 255, 0.06);
        }

        .nav-links-desktop li a.active {
            color: var(--color-primary);
            font-weight: 600;
            text-shadow: 0 0 12px rgba(0, 229, 255, 0.7);
            background: rgba(0, 229, 255, 0.1);
            box-shadow: inset 0 0 0 1px rgba(0, 229, 255, 0.25);
        }

        .nav-cta-btn {
            display: inline-flex;
            align-items: center;
            gap: 6px;
            padding: 10px 22px;
            border-radius: var(--radius-full);
            background: linear-gradient(135deg, var(--color-primary-dark), var(--color-primary));
            color: #0b0f19 !important;
            font-weight: 700;
            font-size: 0.9rem;
            letter-spacing: 0.4px;
            border: none;
            transition: all var(--transition-smooth);
            box-shadow: var(--shadow-neon);
            white-space: nowrap;
        }

        .nav-cta-btn:hover {
            box-shadow: 0 0 28px rgba(0, 229, 255, 0.6), 0 0 50px rgba(0, 229, 255, 0.25);
            transform: translateY(-2px);
            color: #0b0f19 !important;
            background: linear-gradient(135deg, #00d5ee, #33ebff);
        }

        /* Mobile nav toggle */
        .nav-mobile-toggle {
            display: none;
            background: none;
            border: none;
            color: var(--color-text-white);
            font-size: 1.5rem;
            padding: 8px 10px;
            border-radius: var(--radius-sm);
            cursor: pointer;
            transition: all var(--transition-fast);
            z-index: 1001;
        }

        .nav-mobile-toggle:hover {
            color: var(--color-primary);
            text-shadow: 0 0 10px rgba(0, 229, 255, 0.6);
        }

        .nav-mobile-menu {
            display: none;
            position: absolute;
            top: 100%;
            left: 0;
            right: 0;
            background: var(--color-bg-darker);
            border-top: 2px solid var(--color-primary);
            box-shadow: var(--shadow-xl);
            flex-direction: column;
            padding: 12px 0;
            z-index: 999;
            border-radius: 0 0 var(--radius-lg) var(--radius-lg);
        }

        .nav-mobile-menu.open {
            display: flex;
        }

        .nav-mobile-menu a {
            display: block;
            padding: 14px 24px;
            color: var(--color-text-on-dark);
            font-size: 1rem;
            font-weight: 500;
            letter-spacing: 0.3px;
            transition: all var(--transition-fast);
            border-left: 3px solid transparent;
        }

        .nav-mobile-menu a:hover,
        .nav-mobile-menu a.active {
            color: var(--color-primary);
            background: rgba(0, 229, 255, 0.06);
            border-left-color: var(--color-primary);
            text-shadow: 0 0 8px rgba(0, 229, 255, 0.4);
        }

        .nav-mobile-menu .mobile-cta {
            margin: 8px 20px;
            text-align: center;
            border-radius: var(--radius-full);
            background: linear-gradient(135deg, var(--color-primary-dark), var(--color-primary));
            color: #0b0f19 !important;
            font-weight: 700;
            padding: 12px 20px;
            border-left: none;
            box-shadow: var(--shadow-neon);
        }

        .nav-mobile-menu .mobile-cta:hover {
            border-left: none;
            color: #0b0f19 !important;
            box-shadow: 0 0 28px rgba(0, 229, 255, 0.6);
        }

        @media (max-width: 1024px) {
            .nav-links-desktop {
                gap: 2px;
            }
            .nav-links-desktop li a {
                padding: 8px 11px;
                font-size: 0.88rem;
            }
            .nav-cta-btn {
                padding: 8px 16px;
                font-size: 0.82rem;
            }
        }

        @media (max-width: 840px) {
            .nav-links-desktop {
                display: none;
            }
            .nav-cta-desktop {
                display: none;
            }
            .nav-mobile-toggle {
                display: block;
            }
            .nav-wrapper {
                min-height: 56px;
            }
        }

        @media (min-width: 841px) {
            .nav-mobile-menu {
                display: none !important;
            }
        }

        /* ============ HERO ============ */
        .hero-section {
            position: relative;
            min-height: 620px;
            display: flex;
            align-items: center;
            background: var(--color-bg-dark);
            background-image: url('assets/images/backpic/back-1.webp');
            background-size: cover;
            background-position: center;
            background-repeat: no-repeat;
            overflow: hidden;
        }

        .hero-section::before {
            content: '';
            position: absolute;
            inset: 0;
            background: linear-gradient(180deg, rgba(11, 15, 25, 0.82) 0%, rgba(11, 15, 25, 0.9) 50%, rgba(11, 15, 25, 0.95) 100%);
            z-index: 1;
        }

        .hero-section::after {
            content: '';
            position: absolute;
            bottom: 0;
            left: 0;
            right: 0;
            height: 4px;
            background: linear-gradient(90deg, transparent, var(--color-primary), var(--color-accent), var(--color-primary), transparent);
            z-index: 2;
            animation: heroGlowLine 3s ease-in-out infinite;
        }

        @keyframes heroGlowLine {
            0%,
            100% {
                opacity: 0.7;
            }
            50% {
                opacity: 1;
            }
        }

        .hero-content {
            position: relative;
            z-index: 3;
            padding: 80px 0 70px;
            text-align: center;
            max-width: 780px;
            margin: 0 auto;
        }

        .hero-badge {
            display: inline-block;
            padding: 6px 18px;
            border-radius: var(--radius-full);
            background: rgba(0, 229, 255, 0.1);
            border: 1px solid rgba(0, 229, 255, 0.3);
            color: var(--color-primary);
            font-size: 0.85rem;
            font-weight: 600;
            letter-spacing: 1px;
            margin-bottom: 24px;
            text-shadow: 0 0 6px rgba(0, 229, 255, 0.4);
        }

        .hero-title {
            font-family: var(--font-family-heading);
            font-size: 3rem;
            font-weight: 800;
            color: var(--color-text-white);
            line-height: 1.25;
            margin-bottom: 20px;
            letter-spacing: 1px;
        }

        .hero-title .highlight {
            color: var(--color-primary);
            text-shadow: 0 0 18px rgba(0, 229, 255, 0.7);
        }

        .hero-subtitle {
            font-size: 1.2rem;
            color: var(--color-text-on-dark);
            line-height: 1.8;
            margin-bottom: 36px;
            opacity: 0.9;
            max-width: 620px;
            margin-left: auto;
            margin-right: auto;
        }

        .hero-buttons {
            display: flex;
            gap: 16px;
            flex-wrap: wrap;
            justify-content: center;
        }

        .btn-primary-glow {
            display: inline-flex;
            align-items: center;
            gap: 8px;
            padding: 14px 32px;
            border-radius: var(--radius-full);
            background: linear-gradient(135deg, var(--color-primary-dark), var(--color-primary));
            color: #0b0f19;
            font-weight: 700;
            font-size: 1rem;
            letter-spacing: 0.5px;
            border: none;
            box-shadow: var(--shadow-neon);
            transition: all var(--transition-smooth);
        }

        .btn-primary-glow:hover {
            box-shadow: 0 0 32px rgba(0, 229, 255, 0.7), 0 0 56px rgba(0, 229, 255, 0.3);
            transform: translateY(-3px);
            color: #0b0f19;
        }

        .btn-outline-glow {
            display: inline-flex;
            align-items: center;
            gap: 8px;
            padding: 14px 32px;
            border-radius: var(--radius-full);
            background: transparent;
            color: var(--color-text-white);
            font-weight: 600;
            font-size: 1rem;
            letter-spacing: 0.5px;
            border: 2px solid rgba(255, 255, 255, 0.35);
            transition: all var(--transition-smooth);
        }

        .btn-outline-glow:hover {
            border-color: var(--color-primary);
            color: var(--color-primary);
            text-shadow: 0 0 10px rgba(0, 229, 255, 0.5);
            box-shadow: 0 0 20px rgba(0, 229, 255, 0.2);
            transform: translateY(-2px);
        }

        @media (max-width: 768px) {
            .hero-section {
                min-height: 500px;
            }
            .hero-title {
                font-size: 2rem;
            }
            .hero-subtitle {
                font-size: 1rem;
            }
            .hero-content {
                padding: 50px 0 50px;
            }
            .btn-primary-glow,
            .btn-outline-glow {
                padding: 12px 24px;
                font-size: 0.9rem;
            }
        }

        @media (max-width: 520px) {
            .hero-section {
                min-height: 440px;
            }
            .hero-title {
                font-size: 1.6rem;
            }
            .hero-subtitle {
                font-size: 0.9rem;
            }
            .hero-buttons {
                flex-direction: column;
                align-items: center;
            }
        }

        /* ============ SECTION COMMONS ============ */
        .section-padding {
            padding: 70px 0;
        }
        .section-padding-sm {
            padding: 50px 0;
        }
        .section-header {
            text-align: center;
            margin-bottom: 48px;
        }
        .section-header h2 {
            font-family: var(--font-family-heading);
            font-size: 2.2rem;
            font-weight: 700;
            color: var(--color-text-primary);
            margin-bottom: 12px;
            letter-spacing: 0.5px;
        }
        .section-header .section-divider {
            width: 60px;
            height: 3px;
            background: linear-gradient(90deg, var(--color-primary-dark), var(--color-primary));
            margin: 0 auto 16px;
            border-radius: 2px;
        }
        .section-header p {
            color: var(--color-text-secondary);
            font-size: 1.05rem;
            max-width: 600px;
            margin: 0 auto;
            line-height: 1.7;
        }
        @media (max-width: 768px) {
            .section-header h2 {
                font-size: 1.7rem;
            }
            .section-padding {
                padding: 48px 0;
            }
        }

        /* ============ BRAND INTRO ============ */
        .brand-intro-section {
            background: var(--color-bg-white);
            position: relative;
        }
        .brand-intro-card {
            background: var(--color-bg-white);
            border-radius: var(--radius-xl);
            padding: 40px 44px;
            box-shadow: var(--shadow-lg);
            border: 1px solid var(--color-border);
            max-width: 860px;
            margin: 0 auto;
            position: relative;
        }
        .brand-intro-card::before {
            content: '';
            position: absolute;
            top: -3px;
            left: 40px;
            right: 40px;
            height: 3px;
            background: linear-gradient(90deg, var(--color-primary), var(--color-accent));
            border-radius: 0 0 3px 3px;
        }
        .brand-intro-card p {
            color: var(--color-text-secondary);
            font-size: 1.05rem;
            line-height: 2;
            margin: 0;
        }
        .brand-intro-card .brand-highlight {
            color: var(--color-primary-dark);
            font-weight: 600;
        }
        @media (max-width: 768px) {
            .brand-intro-card {
                padding: 28px 24px;
                border-radius: var(--radius-lg);
            }
            .brand-intro-card p {
                font-size: 0.95rem;
                line-height: 1.85;
            }
        }

        /* ============ STATS ============ */
        .stats-section {
            background: var(--color-bg-section);
        }
        .stat-card {
            background: var(--color-bg-white);
            border-radius: var(--radius-lg);
            padding: 32px 24px;
            text-align: center;
            box-shadow: var(--shadow-md);
            transition: all var(--transition-smooth);
            border: 1px solid transparent;
            position: relative;
            overflow: hidden;
        }
        .stat-card:hover {
            transform: translateY(-6px);
            box-shadow: var(--shadow-xl);
            border-color: rgba(0, 229, 255, 0.3);
        }
        .stat-card .stat-icon {
            font-size: 2.2rem;
            color: var(--color-primary);
            margin-bottom: 14px;
            text-shadow: 0 0 12px rgba(0, 229, 255, 0.3);
        }
        .stat-card .stat-number {
            font-size: 2.6rem;
            font-weight: 800;
            color: var(--color-text-primary);
            letter-spacing: 0.5px;
            margin-bottom: 6px;
            font-family: var(--font-family-heading);
        }
        .stat-card .stat-label {
            font-size: 0.95rem;
            color: var(--color-text-secondary);
            font-weight: 500;
        }
        .stat-card .stat-sub {
            font-size: 0.8rem;
            color: var(--color-text-light);
            margin-top: 4px;
        }
        @media (max-width: 768px) {
            .stat-card .stat-number {
                font-size: 2rem;
            }
            .stat-card {
                padding: 24px 16px;
            }
        }

        /* ============ ADVANTAGES ============ */
        .advantages-section {
            background: var(--color-bg-white);
        }
        .advantage-card {
            background: var(--color-bg-white);
            border-radius: var(--radius-lg);
            padding: 36px 28px;
            box-shadow: var(--shadow-md);
            border: 1px solid var(--color-border);
            transition: all var(--transition-smooth);
            text-align: center;
            height: 100%;
            display: flex;
            flex-direction: column;
            align-items: center;
        }
        .advantage-card:hover {
            transform: translateY(-5px);
            box-shadow: var(--shadow-xl);
            border-color: rgba(0, 229, 255, 0.35);
        }
        .advantage-icon-circle {
            width: 64px;
            height: 64px;
            border-radius: 50%;
            background: linear-gradient(135deg, rgba(0, 229, 255, 0.1), rgba(0, 184, 212, 0.15));
            display: flex;
            align-items: center;
            justify-content: center;
            font-size: 1.6rem;
            color: var(--color-primary-dark);
            margin-bottom: 18px;
            transition: all var(--transition-smooth);
        }
        .advantage-card:hover .advantage-icon-circle {
            box-shadow: 0 0 24px rgba(0, 229, 255, 0.3);
            color: var(--color-primary);
        }
        .advantage-card h3 {
            font-size: 1.2rem;
            font-weight: 700;
            color: var(--color-text-primary);
            margin-bottom: 10px;
        }
        .advantage-card p {
            font-size: 0.93rem;
            color: var(--color-text-secondary);
            line-height: 1.7;
            margin: 0;
        }

        /* ============ CATEGORY CARDS ============ */
        .categories-section {
            background: var(--color-bg-section);
        }
        .category-card {
            display: block;
            background: var(--color-bg-white);
            border-radius: var(--radius-lg);
            overflow: hidden;
            box-shadow: var(--shadow-md);
            transition: all var(--transition-smooth);
            height: 100%;
            border: 1px solid var(--color-border);
        }
        .category-card:hover {
            transform: translateY(-6px);
            box-shadow: var(--shadow-xl);
            border-color: rgba(0, 229, 255, 0.4);
        }
        .category-card-img {
            width: 100%;
            height: 200px;
            object-fit: cover;
            display: block;
        }
        .category-card-body {
            padding: 22px 20px;
            text-align: center;
        }
        .category-card-body h3 {
            font-size: 1.15rem;
            font-weight: 700;
            color: var(--color-text-primary);
            margin-bottom: 6px;
        }
        .category-card-body p {
            font-size: 0.88rem;
            color: var(--color-text-secondary);
            margin: 0;
            line-height: 1.6;
        }
        .category-card .card-arrow {
            display: inline-block;
            margin-top: 8px;
            color: var(--color-primary-dark);
            font-weight: 600;
            font-size: 0.9rem;
            transition: all var(--transition-fast);
        }
        .category-card:hover .card-arrow {
            color: var(--color-primary);
            text-shadow: 0 0 8px rgba(0, 229, 255, 0.4);
        }

        /* ============ BRAND STORY ============ */
        .brand-story-section {
            background: var(--color-bg-dark);
            background-image: url('assets/images/backpic/back-2.webp');
            background-size: cover;
            background-position: center;
            background-repeat: no-repeat;
            position: relative;
            color: var(--color-text-white);
        }
        .brand-story-section::before {
            content: '';
            position: absolute;
            inset: 0;
            background: rgba(11, 15, 25, 0.88);
            z-index: 1;
        }
        .brand-story-content {
            position: relative;
            z-index: 2;
            display: flex;
            align-items: center;
            gap: 48px;
            flex-wrap: wrap;
        }
        .brand-story-text {
            flex: 1 1 400px;
        }
        .brand-story-text h2 {
            font-size: 2rem;
            font-weight: 700;
            margin-bottom: 18px;
            letter-spacing: 0.5px;
            color: var(--color-text-white);
        }
        .brand-story-text .story-divider {
            width: 50px;
            height: 3px;
            background: var(--color-primary);
            margin-bottom: 20px;
            border-radius: 2px;
            box-shadow: 0 0 10px rgba(0, 229, 255, 0.5);
        }
        .brand-story-text p {
            font-size: 1rem;
            line-height: 1.9;
            color: var(--color-text-on-dark);
            margin-bottom: 16px;
        }
        .brand-story-img-wrap {
            flex: 0 0 380px;
            border-radius: var(--radius-xl);
            overflow: hidden;
            box-shadow: var(--shadow-xl);
            border: 2px solid rgba(255, 255, 255, 0.15);
        }
        .brand-story-img-wrap img {
            width: 100%;
            height: auto;
            display: block;
            border-radius: var(--radius-xl);
        }
        @media (max-width: 900px) {
            .brand-story-content {
                flex-direction: column;
                gap: 32px;
            }
            .brand-story-img-wrap {
                flex: 0 0 auto;
                max-width: 100%;
            }
            .brand-story-text h2 {
                font-size: 1.6rem;
            }
        }

        /* ============ FEATURED / SERVICES ============ */
        .featured-section {
            background: var(--color-bg-white);
        }
        .featured-card {
            background: var(--color-bg-white);
            border-radius: var(--radius-lg);
            overflow: hidden;
            box-shadow: var(--shadow-md);
            border: 1px solid var(--color-border);
            transition: all var(--transition-smooth);
            height: 100%;
        }
        .featured-card:hover {
            transform: translateY(-5px);
            box-shadow: var(--shadow-xl);
        }
        .featured-card-img {
            width: 100%;
            height: 220px;
            object-fit: cover;
            display: block;
        }
        .featured-card-body {
            padding: 22px 20px;
        }
        .featured-card-body .tag {
            display: inline-block;
            padding: 4px 12px;
            border-radius: var(--radius-full);
            background: rgba(0, 229, 255, 0.08);
            color: var(--color-primary-dark);
            font-size: 0.78rem;
            font-weight: 600;
            letter-spacing: 0.5px;
            margin-bottom: 10px;
        }
        .featured-card-body h3 {
            font-size: 1.1rem;
            font-weight: 700;
            color: var(--color-text-primary);
            margin-bottom: 8px;
        }
        .featured-card-body p {
            font-size: 0.9rem;
            color: var(--color-text-secondary);
            line-height: 1.6;
            margin: 0;
        }
        .featured-card-body .featured-link {
            display: inline-flex;
            align-items: center;
            gap: 4px;
            margin-top: 12px;
            color: var(--color-primary-dark);
            font-weight: 600;
            font-size: 0.9rem;
            transition: all var(--transition-fast);
        }
        .featured-card:hover .featured-link {
            color: var(--color-primary);
        }

        /* ============ PARTNERS ============ */
        .partners-section {
            background: var(--color-bg-section);
        }
        .partner-logo-grid {
            display: flex;
            flex-wrap: wrap;
            align-items: center;
            justify-content: center;
            gap: 32px 40px;
        }
        .partner-item {
            background: var(--color-bg-white);
            border-radius: var(--radius-md);
            padding: 20px 28px;
            box-shadow: var(--shadow-sm);
            border: 1px solid var(--color-border);
            font-weight: 600;
            color: var(--color-text-secondary);
            font-size: 0.95rem;
            letter-spacing: 0.5px;
            transition: all var(--transition-smooth);
            text-align: center;
            min-width: 120px;
        }
        .partner-item:hover {
            box-shadow: var(--shadow-md);
            color: var(--color-primary-dark);
            border-color: rgba(0, 229, 255, 0.3);
        }
        @media (max-width: 640px) {
            .partner-logo-grid {
                gap: 18px 20px;
            }
            .partner-item {
                padding: 14px 18px;
                font-size: 0.82rem;
                min-width: 90px;
            }
        }

        /* ============ TESTIMONIALS ============ */
        .testimonials-section {
            background: var(--color-bg-white);
        }
        .testimonial-card {
            background: var(--color-bg-section);
            border-radius: var(--radius-lg);
            padding: 30px 26px;
            box-shadow: var(--shadow-md);
            border: 1px solid var(--color-border);
            transition: all var(--transition-smooth);
            height: 100%;
            position: relative;
        }
        .testimonial-card:hover {
            transform: translateY(-4px);
            box-shadow: var(--shadow-lg);
        }
        .testimonial-card .quote-icon {
            font-size: 2rem;
            color: var(--color-primary);
            opacity: 0.5;
            margin-bottom: 10px;
        }
        .testimonial-card p {
            font-size: 0.95rem;
            color: var(--color-text-secondary);
            line-height: 1.8;
            margin-bottom: 16px;
            font-style: italic;
        }
        .testimonial-card .author {
            font-weight: 700;
            color: var(--color-text-primary);
            font-size: 0.9rem;
        }
        .testimonial-card .author-role {
            font-size: 0.8rem;
            color: var(--color-text-light);
        }
        .testimonial-stars {
            color: var(--color-accent);
            margin-bottom: 8px;
            font-size: 0.9rem;
        }

        /* ============ FAQ ============ */
        .faq-section {
            background: var(--color-bg-section);
        }
        .faq-item {
            background: var(--color-bg-white);
            border-radius: var(--radius-md);
            margin-bottom: 14px;
            box-shadow: var(--shadow-sm);
            border: 1px solid var(--color-border);
            overflow: hidden;
            transition: all var(--transition-fast);
        }
        .faq-item:hover {
            border-color: rgba(0, 229, 255, 0.3);
        }
        .faq-question {
            width: 100%;
            text-align: left;
            padding: 20px 24px;
            background: none;
            border: none;
            font-size: 1.05rem;
            font-weight: 600;
            color: var(--color-text-primary);
            cursor: pointer;
            display: flex;
            justify-content: space-between;
            align-items: center;
            gap: 16px;
            transition: all var(--transition-fast);
            line-height: 1.5;
        }
        .faq-question:hover {
            color: var(--color-primary-dark);
        }
        .faq-question .faq-icon {
            flex-shrink: 0;
            font-size: 0.9rem;
            color: var(--color-text-light);
            transition: transform var(--transition-smooth);
        }
        .faq-item.open .faq-question .faq-icon {
            transform: rotate(180deg);
            color: var(--color-primary);
        }
        .faq-answer {
            max-height: 0;
            overflow: hidden;
            transition: max-height 0.4s ease, padding 0.4s ease;
        }
        .faq-item.open .faq-answer {
            max-height: 600px;
        }
        .faq-answer-inner {
            padding: 0 24px 20px 24px;
            color: var(--color-text-secondary);
            font-size: 0.95rem;
            line-height: 1.9;
        }

        /* ============ NEWS ============ */
        .news-section {
            background: var(--color-bg-white);
        }
        .news-card {
            background: var(--color-bg-white);
            border-radius: var(--radius-lg);
            overflow: hidden;
            box-shadow: var(--shadow-md);
            border: 1px solid var(--color-border);
            transition: all var(--transition-smooth);
            height: 100%;
            display: flex;
            flex-direction: column;
        }
        .news-card:hover {
            transform: translateY(-5px);
            box-shadow: var(--shadow-xl);
            border-color: rgba(0, 229, 255, 0.3);
        }
        .news-card-img {
            width: 100%;
            height: 180px;
            object-fit: cover;
            display: block;
        }
        .news-card-body {
            padding: 20px 18px;
            flex: 1;
            display: flex;
            flex-direction: column;
        }
        .news-card-body .news-date {
            font-size: 0.8rem;
            color: var(--color-text-light);
            margin-bottom: 8px;
            letter-spacing: 0.3px;
        }
        .news-card-body h3 {
            font-size: 1.05rem;
            font-weight: 700;
            color: var(--color-text-primary);
            margin-bottom: 8px;
            line-height: 1.4;
        }
        .news-card-body p {
            font-size: 0.88rem;
            color: var(--color-text-secondary);
            line-height: 1.6;
            flex: 1;
            margin-bottom: 12px;
        }
        .news-read-more {
            align-self: flex-start;
            display: inline-flex;
            align-items: center;
            gap: 4px;
            padding: 8px 18px;
            border-radius: var(--radius-full);
            background: rgba(0, 229, 255, 0.06);
            color: var(--color-primary-dark);
            font-weight: 600;
            font-size: 0.85rem;
            border: 1px solid rgba(0, 229, 255, 0.2);
            transition: all var(--transition-fast);
            cursor: pointer;
        }
        .news-read-more:hover {
            background: rgba(0, 229, 255, 0.15);
            color: var(--color-primary);
            border-color: var(--color-primary);
        }

        /* ============ CTA ============ */
        .cta-section {
            background: var(--color-bg-dark);
            background-image: url('assets/images/backpic/back-3.webp');
            background-size: cover;
            background-position: center;
            background-repeat: no-repeat;
            position: relative;
            text-align: center;
            color: var(--color-text-white);
        }
        .cta-section::before {
            content: '';
            position: absolute;
            inset: 0;
            background: rgba(11, 15, 25, 0.85);
            z-index: 1;
        }
        .cta-content {
            position: relative;
            z-index: 2;
            max-width: 650px;
            margin: 0 auto;
        }
        .cta-content h2 {
            font-size: 2.2rem;
            font-weight: 700;
            margin-bottom: 14px;
            letter-spacing: 0.5px;
        }
        .cta-content p {
            font-size: 1.1rem;
            color: var(--color-text-on-dark);
            line-height: 1.8;
            margin-bottom: 30px;
        }
        .cta-content .btn-primary-glow {
            font-size: 1.05rem;
            padding: 16px 38px;
        }
        @media (max-width: 768px) {
            .cta-content h2 {
                font-size: 1.6rem;
            }
            .cta-content p {
                font-size: 0.95rem;
            }
        }

        /* ============ FOOTER ============ */
        .site-footer {
            background: var(--color-bg-darker);
            color: var(--color-text-on-dark);
            padding: 48px 0 28px;
            border-top: 3px solid var(--color-primary);
            box-shadow: 0 -4px 20px rgba(0, 0, 0, 0.3);
        }
        .footer-grid {
            display: grid;
            grid-template-columns: repeat(auto-fit, minmax(200px, 1fr));
            gap: 36px;
            margin-bottom: 32px;
        }
        .footer-col h4 {
            color: var(--color-text-white);
            font-weight: 700;
            font-size: 1rem;
            margin-bottom: 16px;
            letter-spacing: 0.5px;
        }
        .footer-col ul {
            list-style: none;
            margin: 0;
            padding: 0;
        }
        .footer-col ul li {
            margin-bottom: 8px;
        }
        .footer-col ul li a {
            color: var(--color-text-light);
            font-size: 0.9rem;
            transition: all var(--transition-fast);
        }
        .footer-col ul li a:hover {
            color: var(--color-primary);
            text-shadow: 0 0 6px rgba(0, 229, 255, 0.3);
        }
        .footer-bottom {
            border-top: 1px solid rgba(255, 255, 255, 0.1);
            padding-top: 20px;
            text-align: center;
            font-size: 0.85rem;
            color: var(--color-text-light);
        }
        .footer-logo-text {
            font-weight: 700;
            color: var(--color-text-white);
            font-size: 1.2rem;
            letter-spacing: 0.5px;
        }
        @media (max-width: 640px) {
            .footer-grid {
                grid-template-columns: 1fr 1fr;
                gap: 24px;
            }
        }

        /* ============ UTILITY ============ */
        .text-neon {
            color: var(--color-primary);
            text-shadow: 0 0 10px rgba(0, 229, 255, 0.5);
        }
        .sr-only {
            position: absolute;
            width: 1px;
            height: 1px;
            padding: 0;
            margin: -1px;
            overflow: hidden;
            clip: rect(0, 0, 0, 0);
            white-space: nowrap;
            border: 0;
        }

        /* ============ ANIMATIONS ============ */
        @keyframes fadeInUp {
            from {
                opacity: 0;
                transform: translateY(24px);
            }
            to {
                opacity: 1;
                transform: translateY(0);
            }
        }
        .animate-in {
            animation: fadeInUp 0.6s ease forwards;
        }

        /* Foundation overrides */
        .top-bar,
        .top-bar ul {
            background: transparent;
        }
        .top-bar {
            padding: 0;
        }
        .grid-x>.cell {
            padding-left: 12px;
            padding-right: 12px;
        }
        @media (max-width: 640px) {
            .grid-x>.cell {
                padding-left: 8px;
                padding-right: 8px;
            }
        }

/* roulang page: category1 */
:root {
            --color-primary: #0a0e1a;
            --color-secondary: #131827;
            --color-neon-cyan: #00d4e8;
            --color-neon-orange: #ff6b35;
            --color-neon-gold: #f0c040;
            --color-accent: #00b8cc;
            --color-bg: #f8f9fb;
            --color-surface: #ffffff;
            --color-text: #1a1a2e;
            --color-text-light: #6b7280;
            --color-text-muted: #9ca3af;
            --color-border: #e5e7eb;
            --color-border-light: #f0f1f3;
            --color-shadow: rgba(10, 14, 26, 0.08);
            --color-shadow-hover: rgba(10, 14, 26, 0.16);
            --color-glow-cyan: rgba(0, 212, 232, 0.35);
            --color-glow-orange: rgba(255, 107, 53, 0.35);
            --radius-sm: 6px;
            --radius-md: 10px;
            --radius-lg: 16px;
            --radius-xl: 20px;
            --shadow-card: 0 2px 12px var(--color-shadow);
            --shadow-card-hover: 0 8px 30px var(--color-shadow-hover);
            --shadow-nav: 0 2px 20px rgba(0, 0, 0, 0.25);
            --transition-fast: 0.18s ease;
            --transition-smooth: 0.28s ease;
            --font-stack: 'Segoe UI', 'PingFang SC', 'Microsoft YaHei', 'Helvetica Neue', sans-serif;
            --section-pad: 4rem 0;
            --container-max: 1200px;
        }

        *,
        *::before,
        *::after {
            box-sizing: border-box;
        }

        html {
            scroll-behavior: smooth;
            font-size: 16px;
        }

        body {
            margin: 0;
            padding: 0;
            font-family: var(--font-stack);
            line-height: 1.7;
            color: var(--color-text);
            background-color: var(--color-bg);
            -webkit-font-smoothing: antialiased;
            -moz-osx-font-smoothing: grayscale;
            min-height: 100vh;
        }

        a {
            text-decoration: none;
            color: inherit;
            transition: color var(--transition-fast);
        }

        img {
            max-width: 100%;
            height: auto;
            display: block;
            border-radius: var(--radius-md);
        }

        button {
            cursor: pointer;
            font-family: inherit;
            border: none;
            outline: none;
        }

        button:focus-visible,
        a:focus-visible {
            outline: 2px solid var(--color-neon-cyan);
            outline-offset: 3px;
            border-radius: 4px;
        }

        ul {
            list-style: none;
            padding: 0;
            margin: 0;
        }

        h1,
        h2,
        h3,
        h4,
        h5,
        h6 {
            margin: 0 0 0.6em;
            line-height: 1.3;
            font-weight: 700;
            color: var(--color-text);
        }

        p {
            margin: 0 0 1em;
        }

        .grid-container {
            max-width: var(--container-max);
            margin: 0 auto;
            padding: 0 1.5rem;
        }

        @media (max-width: 768px) {
            .grid-container {
                padding: 0 1rem;
            }
            :root {
                --section-pad: 2.5rem 0;
            }
        }

        /* ========== HEADER / NAV ========== */
        .site-header {
            background: linear-gradient(180deg, #0d1122 0%, #0a0e1a 100%);
            position: sticky;
            top: 0;
            z-index: 1000;
            border-bottom: 2px solid transparent;
            border-image: linear-gradient(90deg, transparent 0%, var(--color-neon-cyan) 20%, var(--color-neon-orange) 50%, var(--color-neon-cyan) 80%, transparent 100%) 1;
            box-shadow: var(--shadow-nav);
        }

        .nav-wrapper {
            display: flex;
            align-items: center;
            justify-content: space-between;
            height: 64px;
            gap: 1.5rem;
        }

        .nav-logo {
            display: flex;
            align-items: center;
            gap: 0.5rem;
            font-size: 1.35rem;
            font-weight: 700;
            color: #ffffff;
            white-space: nowrap;
            letter-spacing: 0.02em;
            transition: all var(--transition-fast);
            text-decoration: none;
        }
        .nav-logo:hover {
            color: var(--color-neon-cyan);
            text-shadow: 0 0 14px var(--color-glow-cyan);
        }
        .logo-icon {
            font-size: 1.5rem;
            color: var(--color-neon-cyan);
            filter: drop-shadow(0 0 6px var(--color-glow-cyan));
        }

        .nav-links-desktop {
            display: flex;
            align-items: center;
            gap: 0.2rem;
            list-style: none;
            margin: 0;
            padding: 0;
        }
        .nav-links-desktop li {
            margin: 0;
        }
        .nav-links-desktop a {
            display: inline-flex;
            align-items: center;
            padding: 0.45rem 0.9rem;
            font-size: 0.95rem;
            font-weight: 500;
            color: #c4c9d4;
            border-radius: var(--radius-sm);
            transition: all var(--transition-fast);
            position: relative;
            white-space: nowrap;
            letter-spacing: 0.01em;
            text-decoration: none;
        }
        .nav-links-desktop a::after {
            content: '';
            position: absolute;
            bottom: 2px;
            left: 50%;
            transform: translateX(-50%);
            width: 0;
            height: 2.5px;
            background: var(--color-neon-cyan);
            border-radius: 3px;
            transition: width var(--transition-smooth);
            box-shadow: 0 0 8px var(--color-glow-cyan);
        }
        .nav-links-desktop a:hover {
            color: #ffffff;
            background: rgba(255, 255, 255, 0.04);
        }
        .nav-links-desktop a:hover::after {
            width: 55%;
        }
        .nav-links-desktop a.active {
            color: #ffffff;
            font-weight: 600;
            background: rgba(0, 212, 232, 0.08);
        }
        .nav-links-desktop a.active::after {
            width: 65%;
            background: var(--color-neon-cyan);
            box-shadow: 0 0 14px var(--color-glow-cyan), 0 0 28px var(--color-glow-cyan);
        }

        .nav-cta-btn {
            display: inline-flex;
            align-items: center;
            gap: 0.4rem;
            padding: 0.5rem 1.2rem;
            font-size: 0.9rem;
            font-weight: 600;
            border-radius: 25px;
            background: linear-gradient(135deg, var(--color-neon-orange) 0%, #e85d2c 100%);
            color: #fff;
            white-space: nowrap;
            transition: all var(--transition-smooth);
            box-shadow: 0 4px 16px rgba(255, 107, 53, 0.3);
            text-decoration: none;
            letter-spacing: 0.02em;
        }
        .nav-cta-btn:hover {
            transform: translateY(-2px);
            box-shadow: 0 8px 28px rgba(255, 107, 53, 0.5), 0 0 18px var(--color-glow-orange);
            color: #fff;
            background: linear-gradient(135deg, #ff7d4f 0%, #ff5722 100%);
        }
        .nav-cta-desktop {
            display: inline-flex;
        }

        .nav-mobile-toggle {
            display: none;
            background: transparent;
            color: #ffffff;
            font-size: 1.5rem;
            padding: 0.4rem 0.6rem;
            border-radius: var(--radius-sm);
            transition: all var(--transition-fast);
            border: 1px solid rgba(255, 255, 255, 0.18);
        }
        .nav-mobile-toggle:hover {
            background: rgba(255, 255, 255, 0.08);
            border-color: var(--color-neon-cyan);
            color: var(--color-neon-cyan);
        }

        .nav-mobile-menu {
            display: none;
            flex-direction: column;
            gap: 0.15rem;
            padding: 0.8rem 0 1.2rem;
            background: #0d1122;
            border-top: 1px solid rgba(255, 255, 255, 0.08);
        }
        .nav-mobile-menu a {
            display: block;
            padding: 0.7rem 1rem;
            font-size: 1rem;
            color: #c4c9d4;
            border-radius: var(--radius-sm);
            transition: all var(--transition-fast);
            text-decoration: none;
            font-weight: 500;
        }
        .nav-mobile-menu a:hover {
            background: rgba(255, 255, 255, 0.05);
            color: #ffffff;
        }
        .nav-mobile-menu a.active {
            color: var(--color-neon-cyan);
            background: rgba(0, 212, 232, 0.1);
            font-weight: 600;
            text-shadow: 0 0 8px var(--color-glow-cyan);
        }
        .nav-mobile-menu .mobile-cta {
            margin-top: 0.5rem;
            text-align: center;
            background: linear-gradient(135deg, var(--color-neon-orange) 0%, #e85d2c 100%);
            color: #fff;
            border-radius: 25px;
            font-weight: 600;
            padding: 0.7rem 1.2rem;
            box-shadow: 0 4px 16px rgba(255, 107, 53, 0.3);
        }
        .nav-mobile-menu .mobile-cta:hover {
            background: linear-gradient(135deg, #ff7d4f 0%, #ff5722 100%);
            box-shadow: 0 8px 24px rgba(255, 107, 53, 0.5);
            color: #fff;
        }
        .nav-mobile-menu.open {
            display: flex;
        }

        @media (max-width: 920px) {
            .nav-links-desktop {
                display: none;
            }
            .nav-cta-desktop {
                display: none;
            }
            .nav-mobile-toggle {
                display: inline-flex;
            }
        }

        /* ========== PAGE BANNER ========== */
        .page-banner {
            position: relative;
            background: linear-gradient(160deg, #0d1122 0%, #1a1f35 40%, #0f1424 100%);
            padding: 3.5rem 0;
            overflow: hidden;
            min-height: 320px;
            display: flex;
            align-items: center;
        }
        .page-banner::before {
            content: '';
            position: absolute;
            inset: 0;
            background-image: url('assets/images/backpic/back-2.webp');
            background-size: cover;
            background-position: center;
            opacity: 0.22;
            z-index: 0;
        }
        .page-banner::after {
            content: '';
            position: absolute;
            bottom: 0;
            left: 0;
            right: 0;
            height: 3px;
            background: linear-gradient(90deg, transparent 0%, var(--color-neon-cyan) 25%, var(--color-neon-gold) 50%, var(--color-neon-orange) 75%, transparent 100%);
            z-index: 2;
        }
        .page-banner .grid-container {
            position: relative;
            z-index: 1;
        }
        .page-banner-content {
            max-width: 780px;
        }
        .page-banner .banner-badge {
            display: inline-block;
            padding: 0.35rem 1rem;
            font-size: 0.85rem;
            font-weight: 600;
            border-radius: 20px;
            background: rgba(0, 212, 232, 0.15);
            color: var(--color-neon-cyan);
            border: 1px solid rgba(0, 212, 232, 0.3);
            margin-bottom: 1rem;
            letter-spacing: 0.04em;
        }
        .page-banner h1 {
            font-size: 2.6rem;
            font-weight: 800;
            color: #ffffff;
            margin-bottom: 0.6rem;
            letter-spacing: 0.02em;
            line-height: 1.25;
        }
        .page-banner h1 .highlight {
            background: linear-gradient(135deg, var(--color-neon-cyan) 0%, var(--color-neon-gold) 70%);
            -webkit-background-clip: text;
            -webkit-text-fill-color: transparent;
            background-clip: text;
        }
        .page-banner .banner-desc {
            font-size: 1.1rem;
            color: #bcc3d2;
            line-height: 1.75;
            max-width: 620px;
        }
        @media (max-width: 768px) {
            .page-banner {
                padding: 2.5rem 0;
                min-height: auto;
            }
            .page-banner h1 {
                font-size: 1.8rem;
            }
            .page-banner .banner-desc {
                font-size: 0.95rem;
            }
        }

        /* ========== SECTIONS ========== */
        .section {
            padding: var(--section-pad);
        }
        .section-alt {
            background: #ffffff;
            border-top: 1px solid var(--color-border-light);
            border-bottom: 1px solid var(--color-border-light);
        }
        .section-title {
            text-align: center;
            margin-bottom: 2.5rem;
        }
        .section-title h2 {
            font-size: 2rem;
            font-weight: 700;
            color: var(--color-text);
            margin-bottom: 0.4rem;
            letter-spacing: 0.01em;
        }
        .section-title .title-line {
            display: block;
            width: 56px;
            height: 4px;
            border-radius: 3px;
            background: linear-gradient(90deg, var(--color-neon-cyan), var(--color-neon-orange));
            margin: 0.6rem auto 0;
        }
        .section-title p {
            color: var(--color-text-light);
            font-size: 1rem;
            max-width: 560px;
            margin: 0.8rem auto 0;
        }

        /* ========== CARDS ========== */
        .card-grid {
            display: grid;
            grid-template-columns: repeat(auto-fill, minmax(270px, 1fr));
            gap: 1.5rem;
        }
        @media (max-width: 520px) {
            .card-grid {
                grid-template-columns: 1fr;
                gap: 1rem;
            }
        }
        .card {
            background: var(--color-surface);
            border-radius: var(--radius-lg);
            padding: 1.6rem;
            box-shadow: var(--shadow-card);
            border: 1px solid var(--color-border-light);
            transition: all var(--transition-smooth);
            display: flex;
            flex-direction: column;
            gap: 0.8rem;
            position: relative;
            overflow: hidden;
        }
        .card:hover {
            transform: translateY(-4px);
            box-shadow: var(--shadow-card-hover);
            border-color: #d0d5dd;
        }
        .card .card-icon {
            width: 48px;
            height: 48px;
            border-radius: var(--radius-md);
            display: flex;
            align-items: center;
            justify-content: center;
            font-size: 1.4rem;
            flex-shrink: 0;
        }
        .card .card-icon.cyan {
            background: rgba(0, 212, 232, 0.12);
            color: var(--color-neon-cyan);
        }
        .card .card-icon.orange {
            background: rgba(255, 107, 53, 0.12);
            color: var(--color-neon-orange);
        }
        .card .card-icon.gold {
            background: rgba(240, 192, 64, 0.14);
            color: #c89820;
        }
        .card h3 {
            font-size: 1.15rem;
            font-weight: 700;
            margin: 0;
            color: var(--color-text);
        }
        .card p {
            font-size: 0.92rem;
            color: var(--color-text-light);
            margin: 0;
            line-height: 1.65;
        }
        .card .card-tag {
            display: inline-block;
            font-size: 0.78rem;
            padding: 0.25rem 0.7rem;
            border-radius: 15px;
            font-weight: 600;
            letter-spacing: 0.03em;
            align-self: flex-start;
        }
        .card .card-tag.tag-cyan {
            background: rgba(0, 212, 232, 0.1);
            color: #009fad;
        }
        .card .card-tag.tag-orange {
            background: rgba(255, 107, 53, 0.1);
            color: #c94a1a;
        }

        .card-image-top {
            border-radius: var(--radius-md);
            overflow: hidden;
            margin: -0.4rem -0.4rem 0.2rem;
        }
        .card-image-top img {
            width: 100%;
            height: 170px;
            object-fit: cover;
            border-radius: var(--radius-md);
            transition: transform var(--transition-smooth);
        }
        .card:hover .card-image-top img {
            transform: scale(1.04);
        }

        /* ========== METHOD STEPS ========== */
        .steps-list {
            display: flex;
            flex-direction: column;
            gap: 1.2rem;
            max-width: 800px;
            margin: 0 auto;
        }
        .step-item {
            display: flex;
            gap: 1.2rem;
            align-items: flex-start;
            background: var(--color-surface);
            padding: 1.4rem 1.6rem;
            border-radius: var(--radius-lg);
            box-shadow: var(--shadow-card);
            border: 1px solid var(--color-border-light);
            transition: all var(--transition-smooth);
        }
        .step-item:hover {
            box-shadow: var(--shadow-card-hover);
            border-color: #d0d5dd;
        }
        .step-num {
            width: 44px;
            height: 44px;
            border-radius: 50%;
            display: flex;
            align-items: center;
            justify-content: center;
            font-weight: 800;
            font-size: 1.15rem;
            flex-shrink: 0;
            color: #fff;
            background: linear-gradient(135deg, var(--color-neon-cyan), #0098a8);
            box-shadow: 0 4px 14px var(--color-glow-cyan);
        }
        .step-num.alt {
            background: linear-gradient(135deg, var(--color-neon-orange), #c94a1a);
            box-shadow: 0 4px 14px var(--color-glow-orange);
        }
        .step-body h4 {
            font-size: 1.05rem;
            font-weight: 700;
            margin: 0 0 0.3rem;
            color: var(--color-text);
        }
        .step-body p {
            font-size: 0.92rem;
            color: var(--color-text-light);
            margin: 0;
            line-height: 1.65;
        }
        @media (max-width: 520px) {
            .step-item {
                flex-direction: column;
                gap: 0.6rem;
                padding: 1.2rem;
            }
        }

        /* ========== CASE CARDS ========== */
        .case-card {
            background: var(--color-surface);
            border-radius: var(--radius-lg);
            overflow: hidden;
            box-shadow: var(--shadow-card);
            border: 1px solid var(--color-border-light);
            transition: all var(--transition-smooth);
        }
        .case-card:hover {
            box-shadow: var(--shadow-card-hover);
            transform: translateY(-3px);
        }
        .case-card .case-img {
            height: 200px;
            overflow: hidden;
        }
        .case-card .case-img img {
            width: 100%;
            height: 100%;
            object-fit: cover;
            transition: transform var(--transition-smooth);
            border-radius: 0;
        }
        .case-card:hover .case-img img {
            transform: scale(1.06);
        }
        .case-card .case-body {
            padding: 1.4rem;
        }
        .case-card .case-body h4 {
            font-size: 1.1rem;
            font-weight: 700;
            margin-bottom: 0.4rem;
        }
        .case-card .case-body p {
            font-size: 0.9rem;
            color: var(--color-text-light);
            line-height: 1.6;
            margin: 0;
        }
        .case-card .case-meta {
            display: flex;
            gap: 0.6rem;
            flex-wrap: wrap;
            margin-top: 0.6rem;
        }
        .case-card .case-meta span {
            font-size: 0.78rem;
            padding: 0.2rem 0.6rem;
            border-radius: 12px;
            font-weight: 600;
            background: rgba(0, 212, 232, 0.1);
            color: #009fad;
        }

        /* ========== DATA TABLE AREA ========== */
        .data-highlight-row {
            display: grid;
            grid-template-columns: repeat(4, 1fr);
            gap: 1.2rem;
            text-align: center;
        }
        @media (max-width: 768px) {
            .data-highlight-row {
                grid-template-columns: repeat(2, 1fr);
                gap: 1rem;
            }
        }
        @media (max-width: 420px) {
            .data-highlight-row {
                grid-template-columns: 1fr;
            }
        }
        .data-stat-card {
            background: var(--color-surface);
            padding: 1.5rem 1rem;
            border-radius: var(--radius-lg);
            box-shadow: var(--shadow-card);
            border: 1px solid var(--color-border-light);
            transition: all var(--transition-smooth);
        }
        .data-stat-card:hover {
            box-shadow: var(--shadow-card-hover);
            transform: translateY(-3px);
        }
        .data-stat-card .stat-value {
            font-size: 2.2rem;
            font-weight: 800;
            background: linear-gradient(135deg, var(--color-neon-cyan), var(--color-neon-orange));
            -webkit-background-clip: text;
            -webkit-text-fill-color: transparent;
            background-clip: text;
        }
        .data-stat-card .stat-label {
            font-size: 0.9rem;
            color: var(--color-text-light);
            margin-top: 0.3rem;
            font-weight: 500;
        }

        /* ========== FAQ ========== */
        .faq-list {
            max-width: 780px;
            margin: 0 auto;
            display: flex;
            flex-direction: column;
            gap: 0.8rem;
        }
        .faq-item {
            background: var(--color-surface);
            border-radius: var(--radius-lg);
            border: 1px solid var(--color-border-light);
            overflow: hidden;
            transition: all var(--transition-smooth);
            box-shadow: 0 1px 4px var(--color-shadow);
        }
        .faq-item:hover {
            border-color: #d0d5dd;
            box-shadow: var(--shadow-card);
        }
        .faq-question {
            width: 100%;
            text-align: left;
            padding: 1.2rem 1.5rem;
            font-size: 1rem;
            font-weight: 600;
            color: var(--color-text);
            background: transparent;
            display: flex;
            justify-content: space-between;
            align-items: center;
            cursor: pointer;
            border: none;
            font-family: inherit;
            transition: background var(--transition-fast);
            letter-spacing: 0.01em;
        }
        .faq-question:hover {
            background: rgba(0, 212, 232, 0.03);
        }
        .faq-question .faq-icon {
            font-size: 0.8rem;
            transition: transform var(--transition-smooth);
            color: var(--color-neon-cyan);
            flex-shrink: 0;
            margin-left: 1rem;
        }
        .faq-item.open .faq-question .faq-icon {
            transform: rotate(180deg);
            color: var(--color-neon-orange);
        }
        .faq-answer {
            max-height: 0;
            overflow: hidden;
            transition: max-height 0.4s ease, padding 0.3s ease;
            padding: 0 1.5rem;
        }
        .faq-item.open .faq-answer {
            max-height: 500px;
            padding: 0 1.5rem 1.3rem;
        }
        .faq-answer p {
            font-size: 0.93rem;
            color: var(--color-text-light);
            line-height: 1.7;
            margin: 0;
        }

        /* ========== CTA ========== */
        .cta-section {
            background: linear-gradient(160deg, #0d1122 0%, #1a1f35 60%, #0f1424 100%);
            position: relative;
            overflow: hidden;
            text-align: center;
            padding: 3.5rem 0;
        }
        .cta-section::before {
            content: '';
            position: absolute;
            inset: 0;
            background: radial-gradient(ellipse at center, rgba(0, 212, 232, 0.08) 0%, transparent 65%);
            z-index: 0;
        }
        .cta-section .grid-container {
            position: relative;
            z-index: 1;
        }
        .cta-section h2 {
            color: #ffffff;
            font-size: 1.8rem;
            margin-bottom: 0.5rem;
        }
        .cta-section p {
            color: #bcc3d2;
            font-size: 1rem;
            margin-bottom: 1.5rem;
        }
        .cta-btn-large {
            display: inline-flex;
            align-items: center;
            gap: 0.5rem;
            padding: 0.85rem 2.2rem;
            font-size: 1.05rem;
            font-weight: 700;
            border-radius: 30px;
            background: linear-gradient(135deg, var(--color-neon-orange) 0%, #e85d2c 100%);
            color: #fff;
            transition: all var(--transition-smooth);
            box-shadow: 0 6px 22px rgba(255, 107, 53, 0.4);
            text-decoration: none;
            letter-spacing: 0.02em;
        }
        .cta-btn-large:hover {
            transform: translateY(-3px);
            box-shadow: 0 12px 34px rgba(255, 107, 53, 0.55), 0 0 20px var(--color-glow-orange);
            color: #fff;
        }
        .cta-btn-large.secondary {
            background: transparent;
            border: 2px solid var(--color-neon-cyan);
            color: var(--color-neon-cyan);
            box-shadow: 0 0 16px var(--color-glow-cyan);
        }
        .cta-btn-large.secondary:hover {
            background: rgba(0, 212, 232, 0.1);
            box-shadow: 0 0 28px var(--color-glow-cyan), 0 8px 24px rgba(0, 212, 232, 0.3);
        }

        /* ========== FOOTER ========== */
        .site-footer {
            background: #0a0e1a;
            color: #c4c9d4;
            padding: 3rem 0 1.5rem;
            border-top: 2px solid rgba(255, 255, 255, 0.06);
        }
        .footer-grid {
            display: grid;
            grid-template-columns: 1.5fr 1fr 1fr 1.2fr;
            gap: 2rem;
            margin-bottom: 2rem;
        }
        @media (max-width: 768px) {
            .footer-grid {
                grid-template-columns: 1fr 1fr;
                gap: 1.5rem;
            }
        }
        @media (max-width: 480px) {
            .footer-grid {
                grid-template-columns: 1fr;
                gap: 1.2rem;
            }
        }
        .footer-col h4 {
            color: #ffffff;
            font-size: 1rem;
            font-weight: 700;
            margin-bottom: 1rem;
            letter-spacing: 0.02em;
        }
        .footer-col ul li {
            margin-bottom: 0.5rem;
        }
        .footer-col ul li a {
            color: #a0a7b8;
            font-size: 0.9rem;
            transition: color var(--transition-fast);
            text-decoration: none;
        }
        .footer-col ul li a:hover {
            color: var(--color-neon-cyan);
        }
        .footer-logo-text {
            color: #ffffff;
            font-weight: 700;
            font-size: 1.1rem;
        }
        .footer-bottom {
            text-align: center;
            padding-top: 1.5rem;
            border-top: 1px solid rgba(255, 255, 255, 0.08);
            font-size: 0.82rem;
            color: #6b7280;
        }

        /* ========== UTILITY ========== */
        .text-center {
            text-align: center;
        }
        .mt-2 {
            margin-top: 2rem;
        }
        .mb-1 {
            margin-bottom: 1rem;
        }
        .gap-buttons {
            display: flex;
            gap: 1rem;
            flex-wrap: wrap;
            justify-content: center;
        }
        @media (max-width: 520px) {
            .gap-buttons {
                flex-direction: column;
                align-items: center;
            }
        }

/* roulang page: category3 */
:root {
            --color-primary: #0a1628;
            --color-primary-light: #111d35;
            --color-accent: #00d4aa;
            --color-accent-glow: #00f0c8;
            --color-accent-dim: #00b894;
            --color-surface: #ffffff;
            --color-surface-alt: #f5f7fa;
            --color-surface-dark: #0d1a2d;
            --color-text: #1a1a2e;
            --color-text-light: #5a6a7e;
            --color-text-muted: #8899aa;
            --color-border: #e2e8f0;
            --color-border-light: #edf2f7;
            --color-danger: #e74c3c;
            --color-warning: #f39c12;
            --color-success: #27ae60;
            --color-nav-bg: #080e1a;
            --color-nav-text: #c8d6e5;
            --color-nav-hover: #00d4aa;
            --color-nav-active: #00f0c8;
            --radius-sm: 6px;
            --radius-md: 10px;
            --radius-lg: 16px;
            --radius-xl: 20px;
            --shadow-sm: 0 1px 3px rgba(0, 0, 0, 0.06);
            --shadow-md: 0 4px 16px rgba(0, 0, 0, 0.08);
            --shadow-lg: 0 8px 32px rgba(0, 0, 0, 0.12);
            --shadow-glow: 0 0 20px rgba(0, 212, 170, 0.25);
            --shadow-neon: 0 0 30px rgba(0, 240, 200, 0.35);
            --font-sans: 'Segoe UI', 'PingFang SC', 'Microsoft YaHei', 'Helvetica Neue', sans-serif;
            --transition-fast: 0.18s ease;
            --transition-base: 0.28s ease;
            --transition-slow: 0.4s ease;
            --max-width: 1280px;
            --header-height: 68px;
        }

        *,
        *::before,
        *::after {
            box-sizing: border-box;
        }

        html {
            scroll-behavior: smooth;
            -webkit-font-smoothing: antialiased;
            -moz-osx-font-smoothing: grayscale;
        }

        body {
            margin: 0;
            padding: 0;
            font-family: var(--font-sans);
            font-size: 16px;
            line-height: 1.7;
            color: var(--color-text);
            background-color: var(--color-surface);
            min-height: 100vh;
            overflow-x: hidden;
        }

        a {
            text-decoration: none;
            color: inherit;
            transition: color var(--transition-fast);
        }

        img {
            max-width: 100%;
            height: auto;
            display: block;
        }

        button {
            cursor: pointer;
            font-family: inherit;
            border: none;
            outline: none;
        }

        button:focus-visible,
        a:focus-visible {
            outline: 2px solid var(--color-accent);
            outline-offset: 3px;
            border-radius: var(--radius-sm);
        }

        ul {
            list-style: none;
            margin: 0;
            padding: 0;
        }

        h1,
        h2,
        h3,
        h4,
        h5,
        h6 {
            margin: 0;
            line-height: 1.3;
            font-weight: 700;
            color: var(--color-text);
        }

        .grid-container {
            max-width: var(--max-width);
            margin: 0 auto;
            padding: 0 24px;
        }

        /* ============ HEADER / NAV ============ */
        .site-header {
            position: sticky;
            top: 0;
            z-index: 1000;
            background: var(--color-nav-bg);
            border-bottom: 1px solid rgba(255, 255, 255, 0.06);
            box-shadow: 0 2px 20px rgba(0, 0, 0, 0.4);
            backdrop-filter: blur(12px);
            -webkit-backdrop-filter: blur(12px);
        }

        .nav-wrapper {
            display: flex;
            align-items: center;
            justify-content: space-between;
            height: var(--header-height);
            gap: 20px;
        }

        .nav-logo {
            display: flex;
            align-items: center;
            gap: 10px;
            font-size: 1.3rem;
            font-weight: 800;
            color: #ffffff;
            white-space: nowrap;
            letter-spacing: 0.5px;
            transition: color var(--transition-fast);
        }
        .nav-logo:hover {
            color: var(--color-accent-glow);
        }
        .logo-icon {
            display: flex;
            align-items: center;
            justify-content: center;
            width: 40px;
            height: 40px;
            border-radius: 50%;
            background: linear-gradient(135deg, var(--color-accent), var(--color-accent-dim));
            color: var(--color-nav-bg);
            font-size: 1.1rem;
            box-shadow: var(--shadow-glow);
        }

        .nav-links-desktop {
            display: flex;
            align-items: center;
            gap: 6px;
            flex-wrap: wrap;
            justify-content: center;
        }
        .nav-links-desktop li {
            list-style: none;
        }
        .nav-links-desktop a {
            display: inline-block;
            padding: 8px 15px;
            border-radius: 22px;
            font-size: 0.92rem;
            font-weight: 600;
            color: var(--color-nav-text);
            transition: all var(--transition-base);
            position: relative;
            white-space: nowrap;
            letter-spacing: 0.3px;
        }
        .nav-links-desktop a:hover {
            color: #ffffff;
            background: rgba(255, 255, 255, 0.06);
        }
        .nav-links-desktop a.active {
            color: #ffffff;
            background: rgba(0, 212, 170, 0.15);
            box-shadow: 0 0 12px rgba(0, 212, 170, 0.3);
            text-shadow: 0 0 6px rgba(0, 240, 200, 0.5);
        }
        .nav-links-desktop a.active::after {
            content: '';
            position: absolute;
            bottom: 2px;
            left: 50%;
            transform: translateX(-50%);
            width: 26px;
            height: 2.5px;
            border-radius: 2px;
            background: var(--color-accent-glow);
            box-shadow: 0 0 8px var(--color-accent-glow);
        }

        .nav-cta-btn {
            display: inline-flex;
            align-items: center;
            gap: 7px;
            padding: 9px 20px;
            border-radius: 22px;
            font-size: 0.9rem;
            font-weight: 700;
            color: #000;
            background: linear-gradient(135deg, var(--color-accent-glow), var(--color-accent));
            box-shadow: var(--shadow-glow);
            transition: all var(--transition-base);
            white-space: nowrap;
            letter-spacing: 0.4px;
        }
        .nav-cta-btn:hover {
            box-shadow: var(--shadow-neon);
            transform: translateY(-1px);
            color: #000;
            background: linear-gradient(135deg, #00ffd5, var(--color-accent-glow));
        }
        .nav-cta-desktop {
            display: inline-flex;
        }

        .nav-mobile-toggle {
            display: none;
            background: transparent;
            color: #ffffff;
            font-size: 1.4rem;
            padding: 6px 10px;
            border-radius: var(--radius-sm);
            transition: background var(--transition-fast);
        }
        .nav-mobile-toggle:hover {
            background: rgba(255, 255, 255, 0.1);
        }

        .nav-mobile-menu {
            display: none;
            flex-direction: column;
            padding: 10px 0 18px;
            gap: 4px;
            border-top: 1px solid rgba(255, 255, 255, 0.08);
        }
        .nav-mobile-menu a {
            display: block;
            padding: 11px 16px;
            border-radius: var(--radius-sm);
            font-size: 1rem;
            font-weight: 600;
            color: var(--color-nav-text);
            transition: all var(--transition-fast);
        }
        .nav-mobile-menu a:hover,
        .nav-mobile-menu a.active {
            color: #ffffff;
            background: rgba(0, 212, 170, 0.12);
        }
        .nav-mobile-menu a.mobile-cta {
            text-align: center;
            margin-top: 6px;
            color: #000;
            background: linear-gradient(135deg, var(--color-accent-glow), var(--color-accent));
            font-weight: 700;
        }
        .nav-mobile-menu a.mobile-cta:hover {
            box-shadow: var(--shadow-neon);
            color: #000;
        }
        .nav-mobile-menu.open {
            display: flex;
        }

        /* ============ PAGE BANNER ============ */
        .page-banner {
            position: relative;
            background: linear-gradient(170deg, #0a1628 0%, #0d1f3c 40%, #0a1628 100%);
            padding: 70px 0 60px;
            overflow: hidden;
        }
        .page-banner::before {
            content: '';
            position: absolute;
            inset: 0;
            background: url('assets/images/backpic/back-2.webp') center/cover no-repeat;
            opacity: 0.18;
            z-index: 0;
        }
        .page-banner::after {
            content: '';
            position: absolute;
            bottom: 0;
            left: 0;
            right: 0;
            height: 4px;
            background: linear-gradient(90deg, transparent, var(--color-accent-glow), var(--color-accent), var(--color-accent-glow), transparent);
            z-index: 1;
        }
        .page-banner .banner-content {
            position: relative;
            z-index: 2;
            text-align: center;
            max-width: 800px;
            margin: 0 auto;
        }
        .page-banner .banner-icon {
            display: inline-flex;
            align-items: center;
            justify-content: center;
            width: 66px;
            height: 66px;
            border-radius: 50%;
            background: rgba(0, 212, 170, 0.15);
            border: 2px solid rgba(0, 240, 200, 0.35);
            margin-bottom: 20px;
            font-size: 1.8rem;
            color: var(--color-accent-glow);
            box-shadow: var(--shadow-glow);
        }
        .page-banner h1 {
            font-size: 2.5rem;
            font-weight: 800;
            color: #ffffff;
            margin-bottom: 14px;
            letter-spacing: 0.8px;
            text-shadow: 0 2px 10px rgba(0, 0, 0, 0.5);
        }
        .page-banner .banner-subtitle {
            font-size: 1.1rem;
            color: #b0c4d8;
            line-height: 1.7;
            max-width: 620px;
            margin: 0 auto 8px;
        }
        .page-banner .banner-badge-row {
            display: flex;
            flex-wrap: wrap;
            gap: 10px;
            justify-content: center;
            margin-top: 18px;
        }
        .banner-badge {
            display: inline-block;
            padding: 6px 16px;
            border-radius: 20px;
            font-size: 0.85rem;
            font-weight: 600;
            background: rgba(255, 255, 255, 0.06);
            color: #c8d6e5;
            border: 1px solid rgba(255, 255, 255, 0.12);
        }

        /* ============ MAIN LAYOUT ============ */
        .section {
            padding: 60px 0;
        }
        .section-sm {
            padding: 40px 0;
        }
        .section-alt {
            background: var(--color-surface-alt);
        }
        .section-dark {
            background: var(--color-surface-dark);
            color: #e0e8f0;
        }
        .section-dark h2,
        .section-dark h3 {
            color: #ffffff;
        }
        .section-dark .section-subtitle {
            color: #8899aa;
        }

        .section-header {
            text-align: center;
            margin-bottom: 44px;
        }
        .section-header h2 {
            font-size: 1.8rem;
            font-weight: 800;
            margin-bottom: 10px;
            letter-spacing: 0.3px;
        }
        .section-header .section-subtitle {
            font-size: 1rem;
            color: var(--color-text-light);
            max-width: 600px;
            margin: 0 auto;
            line-height: 1.6;
        }
        .section-header .accent-line {
            display: block;
            width: 50px;
            height: 3px;
            border-radius: 2px;
            background: var(--color-accent);
            margin: 14px auto 0;
        }

        /* ============ PREDICTION CARDS ============ */
        .prediction-grid {
            display: grid;
            grid-template-columns: repeat(auto-fill, minmax(340px, 1fr));
            gap: 24px;
        }
        .prediction-card {
            background: #ffffff;
            border-radius: var(--radius-lg);
            box-shadow: var(--shadow-sm);
            border: 1px solid var(--color-border-light);
            overflow: hidden;
            transition: all var(--transition-base);
            display: flex;
            flex-direction: column;
        }
        .prediction-card:hover {
            box-shadow: var(--shadow-lg);
            transform: translateY(-3px);
            border-color: var(--color-accent-dim);
        }
        .prediction-card .card-img-wrap {
            position: relative;
            height: 200px;
            overflow: hidden;
            background: #0d1a2d;
        }
        .prediction-card .card-img-wrap img {
            width: 100%;
            height: 100%;
            object-fit: cover;
            transition: transform var(--transition-slow);
        }
        .prediction-card:hover .card-img-wrap img {
            transform: scale(1.06);
        }
        .prediction-card .card-img-wrap .card-flag {
            position: absolute;
            top: 12px;
            right: 12px;
            padding: 5px 12px;
            border-radius: 14px;
            font-size: 0.78rem;
            font-weight: 700;
            color: #ffffff;
            background: var(--color-accent);
            box-shadow: 0 2px 8px rgba(0, 0, 0, 0.25);
            z-index: 2;
        }
        .prediction-card .card-body {
            padding: 20px 22px;
            flex: 1;
            display: flex;
            flex-direction: column;
        }
        .prediction-card .card-body h3 {
            font-size: 1.15rem;
            font-weight: 700;
            margin-bottom: 8px;
            color: var(--color-text);
        }
        .prediction-card .card-meta {
            display: flex;
            gap: 16px;
            font-size: 0.82rem;
            color: var(--color-text-light);
            margin-bottom: 10px;
            flex-wrap: wrap;
        }
        .prediction-card .card-meta span {
            display: inline-flex;
            align-items: center;
            gap: 4px;
        }
        .prediction-card .card-desc {
            font-size: 0.9rem;
            color: var(--color-text-light);
            line-height: 1.6;
            flex: 1;
        }
        .prediction-card .card-prediction-row {
            display: flex;
            gap: 8px;
            margin-top: 14px;
            flex-wrap: wrap;
        }
        .prediction-tag {
            display: inline-block;
            padding: 5px 12px;
            border-radius: 15px;
            font-size: 0.8rem;
            font-weight: 700;
            background: #e8f8f5;
            color: #0d7a5f;
            border: 1px solid #b7e4d9;
        }
        .prediction-tag.highlight {
            background: #fff3cd;
            color: #856404;
            border-color: #ffeeba;
        }
        .prediction-card .card-btn {
            display: inline-flex;
            align-items: center;
            gap: 6px;
            margin-top: 14px;
            padding: 8px 18px;
            border-radius: 20px;
            font-size: 0.85rem;
            font-weight: 700;
            color: #ffffff;
            background: var(--color-primary);
            transition: all var(--transition-base);
            align-self: flex-start;
        }
        .prediction-card .card-btn:hover {
            background: var(--color-accent-dim);
            box-shadow: var(--shadow-glow);
            color: #000;
        }

        /* ============ MODEL SECTION ============ */
        .model-grid {
            display: grid;
            grid-template-columns: repeat(auto-fill, minmax(260px, 1fr));
            gap: 20px;
        }
        .model-card {
            background: #ffffff;
            border-radius: var(--radius-lg);
            padding: 28px 24px;
            text-align: center;
            box-shadow: var(--shadow-sm);
            border: 1px solid var(--color-border-light);
            transition: all var(--transition-base);
        }
        .model-card:hover {
            box-shadow: var(--shadow-md);
            transform: translateY(-2px);
            border-color: var(--color-accent-dim);
        }
        .model-card .model-icon {
            display: inline-flex;
            align-items: center;
            justify-content: center;
            width: 56px;
            height: 56px;
            border-radius: 50%;
            background: rgba(0, 212, 170, 0.1);
            font-size: 1.5rem;
            color: var(--color-accent-dim);
            margin-bottom: 16px;
        }
        .model-card h4 {
            font-size: 1.05rem;
            font-weight: 700;
            margin-bottom: 8px;
            color: var(--color-text);
        }
        .model-card p {
            font-size: 0.88rem;
            color: var(--color-text-light);
            line-height: 1.6;
            margin: 0;
        }

        /* ============ STATS STRIP ============ */
        .stats-strip {
            display: flex;
            flex-wrap: wrap;
            gap: 0;
            border-radius: var(--radius-lg);
            overflow: hidden;
            box-shadow: var(--shadow-md);
        }
        .stats-strip .stat-item {
            flex: 1 1 180px;
            text-align: center;
            padding: 30px 20px;
            background: #ffffff;
            border-right: 1px solid var(--color-border-light);
            transition: background var(--transition-fast);
        }
        .stats-strip .stat-item:last-child {
            border-right: none;
        }
        .stats-strip .stat-item:hover {
            background: #f8fdfb;
        }
        .stats-strip .stat-num {
            font-size: 2rem;
            font-weight: 800;
            color: var(--color-accent-dim);
            letter-spacing: 0.5px;
            line-height: 1;
            margin-bottom: 6px;
        }
        .stats-strip .stat-label {
            font-size: 0.85rem;
            color: var(--color-text-light);
            font-weight: 500;
        }

        /* ============ PROCESS TIMELINE ============ */
        .process-list {
            display: flex;
            flex-direction: column;
            gap: 0;
            counter-reset: process-step;
        }
        .process-item {
            display: flex;
            gap: 20px;
            align-items: flex-start;
            padding: 22px 0;
            border-bottom: 1px solid var(--color-border-light);
            position: relative;
        }
        .process-item:last-child {
            border-bottom: none;
        }
        .process-step-num {
            flex-shrink: 0;
            width: 44px;
            height: 44px;
            border-radius: 50%;
            background: linear-gradient(135deg, var(--color-accent), var(--color-accent-dim));
            color: #ffffff;
            font-weight: 800;
            font-size: 1.1rem;
            display: flex;
            align-items: center;
            justify-content: center;
            box-shadow: var(--shadow-glow);
        }
        .process-item .process-body h4 {
            font-size: 1.05rem;
            font-weight: 700;
            margin-bottom: 4px;
            color: var(--color-text);
        }
        .process-item .process-body p {
            font-size: 0.9rem;
            color: var(--color-text-light);
            margin: 0;
            line-height: 1.6;
        }

        /* ============ CTA SECTION ============ */
        .cta-section {
            background: linear-gradient(160deg, #0a1628 0%, #0d1f3c 50%, #0a1628 100%);
            padding: 60px 0;
            text-align: center;
            position: relative;
            overflow: hidden;
        }
        .cta-section::before {
            content: '';
            position: absolute;
            inset: 0;
            background: url('assets/images/backpic/back-3.webp') center/cover no-repeat;
            opacity: 0.1;
            z-index: 0;
        }
        .cta-section .cta-content {
            position: relative;
            z-index: 2;
            max-width: 650px;
            margin: 0 auto;
        }
        .cta-section h2 {
            font-size: 2rem;
            font-weight: 800;
            color: #ffffff;
            margin-bottom: 12px;
        }
        .cta-section p {
            font-size: 1.05rem;
            color: #b0c4d8;
            margin-bottom: 24px;
            line-height: 1.6;
        }
        .cta-btn-large {
            display: inline-flex;
            align-items: center;
            gap: 8px;
            padding: 14px 32px;
            border-radius: 26px;
            font-size: 1rem;
            font-weight: 700;
            color: #000;
            background: linear-gradient(135deg, var(--color-accent-glow), var(--color-accent));
            box-shadow: var(--shadow-glow);
            transition: all var(--transition-base);
            letter-spacing: 0.5px;
        }
        .cta-btn-large:hover {
            box-shadow: var(--shadow-neon);
            transform: translateY(-2px);
            color: #000;
            background: linear-gradient(135deg, #00ffd5, var(--color-accent-glow));
        }

        /* ============ FAQ ============ */
        .faq-list {
            max-width: 800px;
            margin: 0 auto;
        }
        .faq-item {
            background: #ffffff;
            border-radius: var(--radius-md);
            box-shadow: var(--shadow-sm);
            border: 1px solid var(--color-border-light);
            margin-bottom: 14px;
            overflow: hidden;
            transition: all var(--transition-fast);
        }
        .faq-item:hover {
            box-shadow: var(--shadow-md);
        }
        .faq-question {
            width: 100%;
            text-align: left;
            padding: 18px 22px;
            font-size: 1rem;
            font-weight: 700;
            color: var(--color-text);
            background: transparent;
            display: flex;
            justify-content: space-between;
            align-items: center;
            gap: 12px;
            transition: color var(--transition-fast);
        }
        .faq-question:hover {
            color: var(--color-accent-dim);
        }
        .faq-question .faq-icon {
            flex-shrink: 0;
            font-size: 0.85rem;
            transition: transform var(--transition-base);
            color: var(--color-accent);
        }
        .faq-item.open .faq-question .faq-icon {
            transform: rotate(180deg);
        }
        .faq-answer {
            display: none;
            padding: 0 22px 18px;
            font-size: 0.9rem;
            color: var(--color-text-light);
            line-height: 1.7;
        }
        .faq-item.open .faq-answer {
            display: block;
        }

        /* ============ FOOTER ============ */
        .site-footer {
            background: var(--color-nav-bg);
            color: #c8d6e5;
            padding: 50px 0 20px;
            border-top: 1px solid rgba(255, 255, 255, 0.06);
        }
        .footer-grid {
            display: grid;
            grid-template-columns: repeat(auto-fit, minmax(200px, 1fr));
            gap: 32px;
            margin-bottom: 32px;
        }
        .footer-col h4 {
            color: #ffffff;
            font-size: 1rem;
            font-weight: 700;
            margin-bottom: 14px;
            letter-spacing: 0.4px;
        }
        .footer-col ul li {
            margin-bottom: 8px;
        }
        .footer-col ul li a {
            color: #8899aa;
            font-size: 0.9rem;
            transition: color var(--transition-fast);
        }
        .footer-col ul li a:hover {
            color: var(--color-accent-glow);
        }
        .footer-logo-text {
            color: #ffffff;
            font-weight: 800;
            font-size: 1.1rem;
        }
        .footer-bottom {
            text-align: center;
            padding-top: 20px;
            border-top: 1px solid rgba(255, 255, 255, 0.08);
            font-size: 0.82rem;
            color: #667788;
        }

        /* ============ RESPONSIVE ============ */
        @media (max-width: 1024px) {
            .prediction-grid {
                grid-template-columns: repeat(auto-fill, minmax(280px, 1fr));
                gap: 18px;
            }
            .page-banner h1 {
                font-size: 2rem;
            }
            .model-grid {
                grid-template-columns: repeat(auto-fill, minmax(220px, 1fr));
            }
        }
        @media (max-width: 768px) {
            .nav-links-desktop,
            .nav-cta-desktop {
                display: none;
            }
            .nav-mobile-toggle {
                display: inline-flex;
            }
            .prediction-grid {
                grid-template-columns: 1fr;
                gap: 16px;
            }
            .page-banner {
                padding: 50px 0 40px;
            }
            .page-banner h1 {
                font-size: 1.6rem;
            }
            .section {
                padding: 40px 0;
            }
            .stats-strip {
                flex-direction: column;
                border-radius: var(--radius-md);
            }
            .stats-strip .stat-item {
                border-right: none;
                border-bottom: 1px solid var(--color-border-light);
            }
            .stats-strip .stat-item:last-child {
                border-bottom: none;
            }
            .model-grid {
                grid-template-columns: 1fr 1fr;
                gap: 14px;
            }
            .process-item {
                gap: 14px;
            }
            .process-step-num {
                width: 36px;
                height: 36px;
                font-size: 0.95rem;
            }
            .footer-grid {
                grid-template-columns: 1fr 1fr;
                gap: 24px;
            }
            .cta-section h2 {
                font-size: 1.5rem;
            }
            .grid-container {
                padding: 0 16px;
            }
        }
        @media (max-width: 520px) {
            .model-grid {
                grid-template-columns: 1fr;
            }
            .footer-grid {
                grid-template-columns: 1fr;
                gap: 20px;
            }
            .page-banner h1 {
                font-size: 1.35rem;
            }
            .page-banner .banner-subtitle {
                font-size: 0.9rem;
            }
            .section-header h2 {
                font-size: 1.4rem;
            }
            .prediction-card .card-img-wrap {
                height: 160px;
            }
            .nav-logo {
                font-size: 1.1rem;
            }
            .logo-icon {
                width: 34px;
                height: 34px;
                font-size: 0.9rem;
            }
            .banner-badge {
                font-size: 0.75rem;
                padding: 5px 10px;
            }
        }

/* roulang page: category2 */
/* ========== 设计变量 ========== */
        :root {
            --color-primary: #0d6efd;
            --color-primary-dark: #0a58ca;
            --color-accent: #f0b90b;
            --color-accent-dark: #d4a30a;
            --color-neon: #00e5ff;
            --color-neon-glow: rgba(0, 229, 255, 0.45);
            --color-bg: #ffffff;
            --color-bg-alt: #f5f7fa;
            --color-bg-dark: #0a0e1a;
            --color-bg-card: #ffffff;
            --color-text: #1a1f2e;
            --color-text-light: #6b7280;
            --color-text-lighter: #9ca3af;
            --color-text-on-dark: #e0e4eb;
            --color-border: #e5e7eb;
            --color-border-light: #f0f2f5;
            --color-danger: #ef4444;
            --color-success: #10b981;
            --color-warning: #f59e0b;
            --radius-sm: 8px;
            --radius-md: 12px;
            --radius-lg: 16px;
            --radius-xl: 20px;
            --radius-full: 50px;
            --shadow-sm: 0 1px 3px rgba(0, 0, 0, 0.06), 0 1px 2px rgba(0, 0, 0, 0.04);
            --shadow-md: 0 4px 16px rgba(0, 0, 0, 0.08), 0 2px 6px rgba(0, 0, 0, 0.04);
            --shadow-lg: 0 12px 32px rgba(0, 0, 0, 0.1), 0 4px 12px rgba(0, 0, 0, 0.05);
            --shadow-xl: 0 20px 48px rgba(0, 0, 0, 0.14), 0 8px 20px rgba(0, 0, 0, 0.06);
            --shadow-neon: 0 0 20px rgba(0, 229, 255, 0.3), 0 0 40px rgba(0, 229, 255, 0.12);
            --transition-fast: 0.18s ease;
            --transition-base: 0.28s ease;
            --transition-slow: 0.4s ease;
            --font-stack: 'Segoe UI', 'PingFang SC', 'Hiragino Sans GB', 'Microsoft YaHei', 'Noto Sans SC', system-ui, -apple-system, sans-serif;
            --container-max: 1240px;
            --nav-height: 68px;
        }

        /* ========== 基础 Reset ========== */
        *,
        *::before,
        *::after {
            box-sizing: border-box;
        }

        html {
            scroll-behavior: smooth;
            -webkit-text-size-adjust: 100%;
        }

        body {
            margin: 0;
            padding: 0;
            font-family: var(--font-stack);
            font-size: 16px;
            line-height: 1.7;
            color: var(--color-text);
            background-color: var(--color-bg);
            -webkit-font-smoothing: antialiased;
            -moz-osx-font-smoothing: grayscale;
            overflow-x: hidden;
        }

        img {
            max-width: 100%;
            height: auto;
            display: block;
        }

        a {
            text-decoration: none;
            color: inherit;
            transition: color var(--transition-fast);
        }

        button {
            cursor: pointer;
            font-family: inherit;
        }

        input,
        select,
        textarea {
            font-family: inherit;
        }

        ul,
        ol {
            list-style: none;
            padding: 0;
            margin: 0;
        }

        h1,
        h2,
        h3,
        h4,
        h5,
        h6 {
            margin: 0;
            line-height: 1.3;
            font-weight: 700;
        }

        p {
            margin: 0 0 1rem;
        }

        /* ========== 容器 ========== */
        .grid-container {
            max-width: var(--container-max);
            margin: 0 auto;
            padding-left: 20px;
            padding-right: 20px;
        }

        @media (max-width: 640px) {
            .grid-container {
                padding-left: 14px;
                padding-right: 14px;
            }
        }

        /* ========== 暗色霓虹导航 ========== */
        .site-header {
            background: #0a0e1a;
            background-image: linear-gradient(180deg, #0d1125 0%, #0a0e1a 100%);
            position: sticky;
            top: 0;
            z-index: 1000;
            border-bottom: 1px solid rgba(255, 255, 255, 0.06);
            box-shadow: 0 2px 24px rgba(0, 0, 0, 0.35);
            height: var(--nav-height);
            display: flex;
            align-items: center;
        }

        .site-header .grid-container {
            width: 100%;
        }

        .nav-wrapper {
            display: flex;
            align-items: center;
            justify-content: space-between;
            gap: 20px;
            height: 100%;
        }

        .nav-logo {
            display: flex;
            align-items: center;
            gap: 10px;
            font-size: 1.35rem;
            font-weight: 700;
            color: #ffffff;
            white-space: nowrap;
            letter-spacing: 0.02em;
            transition: color var(--transition-fast), text-shadow var(--transition-fast);
            flex-shrink: 0;
        }

        .nav-logo:hover {
            color: var(--color-neon);
            text-shadow: 0 0 18px rgba(0, 229, 255, 0.5);
        }

        .logo-icon {
            display: flex;
            align-items: center;
            justify-content: center;
            width: 40px;
            height: 40px;
            border-radius: var(--radius-sm);
            background: linear-gradient(135deg, #0d6efd 0%, #00d4ff 100%);
            color: #fff;
            font-size: 1.2rem;
            box-shadow: 0 0 16px rgba(0, 180, 255, 0.4);
        }

        .nav-links-desktop {
            display: flex;
            align-items: center;
            gap: 6px;
            list-style: none;
            margin: 0;
            padding: 0;
            flex-wrap: wrap;
            justify-content: center;
        }

        .nav-links-desktop li {
            margin: 0;
        }

        .nav-links-desktop a {
            display: inline-block;
            padding: 8px 16px;
            border-radius: var(--radius-full);
            font-size: 0.95rem;
            font-weight: 500;
            color: #c8cdd8;
            position: relative;
            transition: color var(--transition-fast), background var(--transition-fast), box-shadow var(--transition-fast);
            white-space: nowrap;
        }

        .nav-links-desktop a::after {
            content: '';
            position: absolute;
            bottom: 2px;
            left: 50%;
            transform: translateX(-50%) scaleX(0);
            width: 60%;
            height: 2px;
            background: var(--color-neon);
            border-radius: 2px;
            transition: transform var(--transition-base);
            box-shadow: 0 0 10px var(--color-neon-glow);
        }

        .nav-links-desktop a:hover {
            color: #ffffff;
            background: rgba(255, 255, 255, 0.05);
        }

        .nav-links-desktop a:hover::after {
            transform: translateX(-50%) scaleX(1);
        }

        .nav-links-desktop a.active {
            color: #ffffff;
            font-weight: 600;
            background: rgba(0, 229, 255, 0.08);
            box-shadow: inset 0 0 0 1px rgba(0, 229, 255, 0.25);
        }

        .nav-links-desktop a.active::after {
            transform: translateX(-50%) scaleX(1);
            background: var(--color-neon);
            box-shadow: 0 0 14px var(--color-neon-glow), 0 0 28px rgba(0, 229, 255, 0.2);
            height: 2.5px;
        }

        .nav-cta-btn {
            display: inline-flex;
            align-items: center;
            gap: 7px;
            padding: 10px 22px;
            border-radius: var(--radius-full);
            font-weight: 600;
            font-size: 0.95rem;
            color: #0a0e1a;
            background: linear-gradient(135deg, #00e5ff 0%, #00b8d4 100%);
            border: none;
            white-space: nowrap;
            transition: transform var(--transition-fast), box-shadow var(--transition-fast), background var(--transition-base);
            box-shadow: 0 4px 16px rgba(0, 200, 240, 0.35);
            flex-shrink: 0;
        }

        .nav-cta-btn:hover {
            transform: translateY(-2px);
            box-shadow: 0 8px 28px rgba(0, 220, 255, 0.5), 0 0 0 3px rgba(0, 229, 255, 0.18);
            color: #0a0e1a;
        }

        .nav-cta-btn:active {
            transform: translateY(0);
            box-shadow: 0 2px 8px rgba(0, 200, 240, 0.3);
        }

        .nav-mobile-toggle {
            display: none;
            background: none;
            border: none;
            color: #ffffff;
            font-size: 1.6rem;
            padding: 8px 10px;
            border-radius: var(--radius-sm);
            transition: background var(--transition-fast);
        }

        .nav-mobile-toggle:hover {
            background: rgba(255, 255, 255, 0.08);
        }

        .nav-mobile-menu {
            display: none;
            position: absolute;
            top: var(--nav-height);
            left: 0;
            right: 0;
            background: #0d1125;
            border-bottom: 2px solid rgba(0, 229, 255, 0.25);
            flex-direction: column;
            padding: 12px 18px 18px;
            gap: 6px;
            z-index: 999;
            box-shadow: 0 16px 32px rgba(0, 0, 0, 0.5);
        }

        .nav-mobile-menu a {
            display: block;
            padding: 12px 16px;
            border-radius: var(--radius-sm);
            color: #c8cdd8;
            font-weight: 500;
            font-size: 1rem;
            transition: background var(--transition-fast), color var(--transition-fast);
        }

        .nav-mobile-menu a:hover {
            background: rgba(255, 255, 255, 0.06);
            color: #fff;
        }

        .nav-mobile-menu a.active {
            background: rgba(0, 229, 255, 0.1);
            color: #fff;
            font-weight: 600;
            border-left: 3px solid var(--color-neon);
            box-shadow: 0 0 12px rgba(0, 229, 255, 0.15);
        }

        .nav-mobile-menu .mobile-cta {
            margin-top: 6px;
            text-align: center;
            background: linear-gradient(135deg, #00e5ff 0%, #00b8d4 100%);
            color: #0a0e1a;
            font-weight: 600;
            border-radius: var(--radius-full);
            padding: 12px 20px;
            border-left: none;
        }

        .nav-mobile-menu .mobile-cta:hover {
            background: linear-gradient(135deg, #00d4f0 0%, #00a8c4 100%);
            color: #0a0e1a;
        }

        .nav-mobile-menu.open {
            display: flex;
        }

        @media (max-width: 1024px) {
            .nav-links-desktop {
                display: none;
            }
            .nav-cta-desktop {
                display: none;
            }
            .nav-mobile-toggle {
                display: block;
            }
        }

        @media (max-width: 520px) {
            .nav-logo {
                font-size: 1.15rem;
                gap: 6px;
            }
            .logo-icon {
                width: 34px;
                height: 34px;
                font-size: 1rem;
            }
        }

        /* ========== 页面 Hero Banner ========== */
        .page-hero {
            position: relative;
            background: url('assets/images/backpic/back-2.webp') center/cover no-repeat;
            min-height: 420px;
            display: flex;
            align-items: center;
            overflow: hidden;
        }

        .page-hero::before {
            content: '';
            position: absolute;
            inset: 0;
            background: linear-gradient(135deg, rgba(10, 14, 26, 0.88) 0%, rgba(10, 20, 40, 0.78) 40%, rgba(5, 10, 22, 0.9) 100%);
            z-index: 1;
        }

        .page-hero::after {
            content: '';
            position: absolute;
            bottom: 0;
            left: 0;
            right: 0;
            height: 3px;
            background: linear-gradient(90deg, transparent, var(--color-neon), var(--color-accent), var(--color-neon), transparent);
            z-index: 2;
            opacity: 0.8;
        }

        .page-hero-content {
            position: relative;
            z-index: 3;
            padding: 60px 0;
            max-width: 800px;
        }

        .page-hero-badge {
            display: inline-block;
            padding: 6px 16px;
            border-radius: var(--radius-full);
            font-size: 0.85rem;
            font-weight: 600;
            letter-spacing: 0.04em;
            background: rgba(0, 229, 255, 0.15);
            color: var(--color-neon);
            border: 1px solid rgba(0, 229, 255, 0.3);
            margin-bottom: 18px;
            text-transform: uppercase;
        }

        .page-hero h1 {
            font-size: 2.8rem;
            font-weight: 800;
            color: #ffffff;
            margin-bottom: 16px;
            letter-spacing: 0.01em;
            line-height: 1.25;
        }

        .page-hero h1 span {
            background: linear-gradient(135deg, #00e5ff 0%, #f0b90b 100%);
            -webkit-background-clip: text;
            -webkit-text-fill-color: transparent;
            background-clip: text;
        }

        .page-hero p {
            font-size: 1.15rem;
            color: #c8cdd8;
            margin-bottom: 28px;
            line-height: 1.75;
            max-width: 620px;
        }

        .page-hero-stats {
            display: flex;
            gap: 30px;
            flex-wrap: wrap;
        }

        .page-hero-stat {
            display: flex;
            align-items: center;
            gap: 10px;
            color: #e0e4eb;
            font-size: 0.95rem;
        }

        .page-hero-stat i {
            color: var(--color-neon);
            font-size: 1.2rem;
            text-shadow: 0 0 10px var(--color-neon-glow);
        }

        .page-hero-stat strong {
            color: #fff;
            font-size: 1.3rem;
        }

        @media (max-width: 768px) {
            .page-hero {
                min-height: 340px;
            }
            .page-hero h1 {
                font-size: 2rem;
            }
            .page-hero p {
                font-size: 1rem;
            }
            .page-hero-stats {
                gap: 16px;
            }
        }

        @media (max-width: 520px) {
            .page-hero {
                min-height: 300px;
            }
            .page-hero h1 {
                font-size: 1.6rem;
            }
            .page-hero p {
                font-size: 0.9rem;
            }
            .page-hero-content {
                padding: 40px 0;
            }
        }

        /* ========== 板块通用样式 ========== */
        .section {
            padding: 60px 0;
        }

        .section-alt {
            background: var(--color-bg-alt);
        }

        .section-dark {
            background: var(--color-bg-dark);
            color: #e0e4eb;
        }

        .section-header {
            text-align: center;
            margin-bottom: 44px;
        }

        .section-header h2 {
            font-size: 2rem;
            font-weight: 700;
            color: var(--color-text);
            margin-bottom: 10px;
            letter-spacing: 0.01em;
        }

        .section-dark .section-header h2 {
            color: #ffffff;
        }

        .section-header .section-subtitle {
            font-size: 1.05rem;
            color: var(--color-text-light);
            max-width: 600px;
            margin: 0 auto;
        }

        .section-dark .section-header .section-subtitle {
            color: #b0b8c8;
        }

        .section-divider {
            width: 60px;
            height: 3px;
            border-radius: 3px;
            background: linear-gradient(90deg, var(--color-primary), var(--color-neon));
            margin: 14px auto 0;
        }

        .section-dark .section-divider {
            background: linear-gradient(90deg, var(--color-neon), var(--color-accent));
        }

        /* ========== 卡片系统 ========== */
        .card {
            background: var(--color-bg-card);
            border-radius: var(--radius-lg);
            padding: 28px 24px;
            box-shadow: var(--shadow-sm);
            border: 1px solid var(--color-border-light);
            transition: transform var(--transition-base), box-shadow var(--transition-base), border-color var(--transition-base);
            height: 100%;
        }

        .card:hover {
            transform: translateY(-4px);
            box-shadow: var(--shadow-lg);
            border-color: #d0d5dd;
        }

        .card-icon {
            display: flex;
            align-items: center;
            justify-content: center;
            width: 52px;
            height: 52px;
            border-radius: var(--radius-md);
            font-size: 1.5rem;
            margin-bottom: 16px;
            background: linear-gradient(135deg, #e8f4fd 0%, #d6ecfb 100%);
            color: var(--color-primary);
        }

        .card-icon.accent {
            background: linear-gradient(135deg, #fef9e7 0%, #fdf3d0 100%);
            color: var(--color-accent-dark);
        }

        .card-icon.neon {
            background: linear-gradient(135deg, #e0f7fa 0%, #c8f0f6 100%);
            color: #0097a7;
        }

        .card-icon.danger {
            background: linear-gradient(135deg, #fde8e8 0%, #fcd5d5 100%);
            color: var(--color-danger);
        }

        .card h3 {
            font-size: 1.2rem;
            font-weight: 700;
            margin-bottom: 8px;
            color: var(--color-text);
        }

        .card p {
            font-size: 0.95rem;
            color: var(--color-text-light);
            line-height: 1.7;
            margin-bottom: 0;
        }

        .card-tag {
            display: inline-block;
            padding: 4px 12px;
            border-radius: var(--radius-full);
            font-size: 0.78rem;
            font-weight: 600;
            margin-bottom: 10px;
            letter-spacing: 0.03em;
        }

        .card-tag.blue {
            background: #e8f4fd;
            color: #0d6efd;
        }

        .card-tag.gold {
            background: #fef9e7;
            color: #b8860b;
        }

        .card-tag.teal {
            background: #e0f7fa;
            color: #00695c;
        }

        /* ========== 按钮系统 ========== */
        .btn {
            display: inline-flex;
            align-items: center;
            gap: 8px;
            padding: 11px 24px;
            border-radius: var(--radius-full);
            font-weight: 600;
            font-size: 0.95rem;
            border: none;
            transition: all var(--transition-fast);
            cursor: pointer;
            text-decoration: none;
            letter-spacing: 0.02em;
        }

        .btn-primary {
            background: var(--color-primary);
            color: #fff;
            box-shadow: 0 4px 14px rgba(13, 110, 253, 0.3);
        }

        .btn-primary:hover {
            background: var(--color-primary-dark);
            box-shadow: 0 6px 20px rgba(13, 110, 253, 0.45);
            transform: translateY(-2px);
            color: #fff;
        }

        .btn-outline {
            background: transparent;
            color: var(--color-primary);
            border: 2px solid var(--color-primary);
        }

        .btn-outline:hover {
            background: var(--color-primary);
            color: #fff;
            transform: translateY(-2px);
            box-shadow: 0 4px 14px rgba(13, 110, 253, 0.25);
        }

        .btn-accent {
            background: linear-gradient(135deg, #f0b90b 0%, #e5a800 100%);
            color: #1a1f2e;
            box-shadow: 0 4px 14px rgba(240, 185, 11, 0.35);
            font-weight: 700;
        }

        .btn-accent:hover {
            box-shadow: 0 8px 24px rgba(240, 185, 11, 0.5);
            transform: translateY(-2px);
            color: #1a1f2e;
        }

        .btn-lg {
            padding: 14px 32px;
            font-size: 1.05rem;
            border-radius: var(--radius-full);
        }

        /* ========== 盘口类型卡片网格 ========== */
        .handicap-grid {
            display: grid;
            grid-template-columns: repeat(auto-fit, minmax(270px, 1fr));
            gap: 22px;
        }

        @media (max-width: 640px) {
            .handicap-grid {
                grid-template-columns: 1fr;
                gap: 16px;
            }
        }

        /* ========== 图文区块 ========== */
        .media-block {
            display: grid;
            grid-template-columns: 1fr 1fr;
            gap: 40px;
            align-items: center;
        }

        .media-block.reverse {
            direction: rtl;
        }
        .media-block.reverse>* {
            direction: ltr;
        }

        .media-block .media-img {
            border-radius: var(--radius-lg);
            overflow: hidden;
            box-shadow: var(--shadow-lg);
        }

        .media-block .media-img img {
            width: 100%;
            height: auto;
            object-fit: cover;
            aspect-ratio: 4/3;
            transition: transform var(--transition-slow);
        }

        .media-block .media-img:hover img {
            transform: scale(1.04);
        }

        .media-block .media-text h2 {
            font-size: 1.7rem;
            margin-bottom: 14px;
            color: var(--color-text);
        }

        .media-block .media-text p {
            color: var(--color-text-light);
            line-height: 1.8;
            margin-bottom: 12px;
        }

        @media (max-width: 768px) {
            .media-block {
                grid-template-columns: 1fr;
                gap: 24px;
            }
            .media-block.reverse {
                direction: ltr;
            }
            .media-block .media-text h2 {
                font-size: 1.4rem;
            }
        }

        /* ========== 数据亮点卡片 ========== */
        .stat-card-row {
            display: grid;
            grid-template-columns: repeat(auto-fit, minmax(200px, 1fr));
            gap: 18px;
        }

        .stat-card {
            background: var(--color-bg-card);
            border-radius: var(--radius-lg);
            padding: 24px 20px;
            text-align: center;
            box-shadow: var(--shadow-sm);
            border: 1px solid var(--color-border-light);
            transition: transform var(--transition-base), box-shadow var(--transition-base);
        }

        .stat-card:hover {
            transform: translateY(-3px);
            box-shadow: var(--shadow-md);
        }

        .stat-card .stat-number {
            font-size: 2.5rem;
            font-weight: 800;
            background: linear-gradient(135deg, #0d6efd 0%, #00d4ff 100%);
            -webkit-background-clip: text;
            -webkit-text-fill-color: transparent;
            background-clip: text;
            letter-spacing: -0.02em;
        }

        .stat-card .stat-label {
            font-size: 0.9rem;
            color: var(--color-text-light);
            margin-top: 4px;
            font-weight: 500;
        }

        @media (max-width: 520px) {
            .stat-card-row {
                grid-template-columns: 1fr 1fr;
                gap: 12px;
            }
            .stat-card {
                padding: 18px 14px;
            }
            .stat-card .stat-number {
                font-size: 1.8rem;
            }
        }

        /* ========== FAQ 样式 ========== */
        .faq-list {
            max-width: 800px;
            margin: 0 auto;
            display: flex;
            flex-direction: column;
            gap: 12px;
        }

        .faq-item {
            background: var(--color-bg-card);
            border-radius: var(--radius-md);
            border: 1px solid var(--color-border-light);
            overflow: hidden;
            transition: box-shadow var(--transition-fast), border-color var(--transition-fast);
        }

        .faq-item:hover {
            border-color: #d0d5dd;
        }

        .faq-question {
            padding: 18px 22px;
            font-weight: 600;
            font-size: 1.05rem;
            cursor: pointer;
            display: flex;
            justify-content: space-between;
            align-items: center;
            color: var(--color-text);
            background: #fafbfc;
            transition: background var(--transition-fast);
            user-select: none;
        }

        .faq-question:hover {
            background: #f0f3f7;
        }

        .faq-question i {
            transition: transform var(--transition-base);
            color: var(--color-text-light);
            font-size: 0.85rem;
        }

        .faq-item.open .faq-question i {
            transform: rotate(180deg);
            color: var(--color-primary);
        }

        .faq-answer {
            max-height: 0;
            overflow: hidden;
            transition: max-height var(--transition-slow), padding var(--transition-base);
        }

        .faq-item.open .faq-answer {
            max-height: 500px;
        }

        .faq-answer-inner {
            padding: 0 22px 18px;
            color: var(--color-text-light);
            line-height: 1.75;
            font-size: 0.95rem;
        }

        /* ========== CTA 区块 ========== */
        .cta-section {
            background: linear-gradient(135deg, #0d1125 0%, #0a1a3a 50%, #0d1125 100%);
            position: relative;
            overflow: hidden;
            text-align: center;
            padding: 60px 0;
        }

        .cta-section::before {
            content: '';
            position: absolute;
            top: -80px;
            right: -120px;
            width: 350px;
            height: 350px;
            border-radius: 50%;
            background: radial-gradient(circle, rgba(0, 229, 255, 0.2) 0%, transparent 70%);
            z-index: 1;
            pointer-events: none;
        }

        .cta-section::after {
            content: '';
            position: absolute;
            bottom: -60px;
            left: -100px;
            width: 280px;
            height: 280px;
            border-radius: 50%;
            background: radial-gradient(circle, rgba(240, 185, 11, 0.18) 0%, transparent 70%);
            z-index: 1;
            pointer-events: none;
        }

        .cta-section .cta-content {
            position: relative;
            z-index: 2;
        }

        .cta-section h2 {
            color: #ffffff;
            font-size: 2rem;
            margin-bottom: 12px;
            font-weight: 700;
        }

        .cta-section p {
            color: #b0b8c8;
            font-size: 1.05rem;
            margin-bottom: 28px;
            max-width: 550px;
            margin-left: auto;
            margin-right: auto;
        }

        .cta-section .btn-group {
            display: flex;
            gap: 14px;
            justify-content: center;
            flex-wrap: wrap;
        }

        /* ========== 页脚 ========== */
        .site-footer {
            background: #0a0e1a;
            color: #c8cdd8;
            padding: 48px 0 24px;
            border-top: 2px solid rgba(255, 255, 255, 0.06);
        }

        .footer-grid {
            display: grid;
            grid-template-columns: 1.5fr 1fr 1fr 1fr;
            gap: 30px;
            margin-bottom: 30px;
        }

        .footer-col h4 {
            color: #ffffff;
            margin-bottom: 14px;
            font-size: 1rem;
            font-weight: 700;
            letter-spacing: 0.03em;
        }

        .footer-col ul {
            list-style: none;
            padding: 0;
            margin: 0;
        }

        .footer-col ul li {
            margin-bottom: 8px;
        }

        .footer-col ul li a {
            color: #9ca3af;
            font-size: 0.9rem;
            transition: color var(--transition-fast);
        }

        .footer-col ul li a:hover {
            color: var(--color-neon);
        }

        .footer-logo-text {
            color: #ffffff;
            font-weight: 700;
            font-size: 1.2rem;
        }

        .footer-bottom {
            border-top: 1px solid rgba(255, 255, 255, 0.08);
            padding-top: 18px;
            text-align: center;
            color: #6b7280;
            font-size: 0.85rem;
        }

        @media (max-width: 768px) {
            .footer-grid {
                grid-template-columns: 1fr 1fr;
                gap: 24px;
            }
        }

        @media (max-width: 520px) {
            .footer-grid {
                grid-template-columns: 1fr;
                gap: 20px;
            }
        }

        /* ========== 实用工具类 ========== */
        .text-center {
            text-align: center;
        }
        .mt-2 {
            margin-top: 20px;
        }
        .mt-3 {
            margin-top: 30px;
        }
        .mb-2 {
            margin-bottom: 20px;
        }
        .mb-3 {
            margin-bottom: 30px;
        }
        .highlight-box {
            background: #fffdf5;
            border-left: 4px solid var(--color-accent);
            padding: 18px 22px;
            border-radius: 0 var(--radius-sm) var(--radius-sm) 0;
            margin: 20px 0;
            font-size: 0.95rem;
            color: #5c4a00;
            line-height: 1.75;
        }
        .highlight-box i {
            color: var(--color-accent);
            margin-right: 6px;
        }

        /* ========== 响应式补丁 ========== */
        @media (max-width: 1024px) {
            .section {
                padding: 44px 0;
            }
            .section-header h2 {
                font-size: 1.7rem;
            }
        }

        @media (max-width: 640px) {
            .section {
                padding: 34px 0;
            }
            .section-header h2 {
                font-size: 1.4rem;
            }
            .section-header .section-subtitle {
                font-size: 0.9rem;
            }
            .page-hero h1 {
                font-size: 1.55rem;
            }
        }

/* roulang page: category5 */
:root {
            --color-bg: #080d15;
            --color-bg-surface: #0f1622;
            --color-bg-card: #141d2c;
            --color-bg-card-hover: #1a2538;
            --color-bg-nav: #060a11;
            --color-neon: #00e887;
            --color-neon-glow: rgba(0, 232, 135, 0.45);
            --color-neon-soft: rgba(0, 232, 135, 0.18);
            --color-text: #e8edf4;
            --color-text-bright: #ffffff;
            --color-text-light: #9aafca;
            --color-text-muted: #64758b;
            --color-border: #1e2a3d;
            --color-border-light: #283548;
            --color-accent: #00c7ff;
            --color-accent-glow: rgba(0, 199, 255, 0.4);
            --color-warning: #ffb444;
            --color-danger: #ff5e5e;
            --radius-sm: 6px;
            --radius-md: 10px;
            --radius-lg: 16px;
            --radius-xl: 20px;
            --shadow-sm: 0 2px 8px rgba(0, 0, 0, 0.3);
            --shadow-md: 0 6px 20px rgba(0, 0, 0, 0.4);
            --shadow-lg: 0 12px 36px rgba(0, 0, 0, 0.5);
            --shadow-neon: 0 0 20px rgba(0, 232, 135, 0.3), 0 0 50px rgba(0, 232, 135, 0.1);
            --transition-fast: 0.18s ease;
            --transition-normal: 0.28s ease;
            --transition-slow: 0.4s ease;
            --font-sans: 'Segoe UI', 'PingFang SC', 'Microsoft YaHei', 'Noto Sans SC', sans-serif;
            --max-width: 1200px;
        }

        *,
        *::before,
        *::after {
            box-sizing: border-box;
        }

        html {
            scroll-behavior: smooth;
            -webkit-font-smoothing: antialiased;
            -moz-osx-font-smoothing: grayscale;
        }

        body {
            margin: 0;
            padding: 0;
            font-family: var(--font-sans);
            font-size: 16px;
            line-height: 1.65;
            color: var(--color-text);
            background-color: var(--color-bg);
            min-height: 100vh;
            overflow-x: hidden;
        }

        a {
            text-decoration: none;
            color: inherit;
            transition: color var(--transition-fast);
        }

        img {
            max-width: 100%;
            height: auto;
            display: block;
        }

        button {
            cursor: pointer;
            font-family: inherit;
        }

        ul {
            list-style: none;
            margin: 0;
            padding: 0;
        }

        h1,
        h2,
        h3,
        h4,
        h5,
        h6 {
            margin: 0;
            line-height: 1.3;
            color: var(--color-text-bright);
        }

        p {
            margin: 0;
        }

        input,
        select,
        textarea {
            font-family: inherit;
        }

        .grid-container {
            max-width: var(--max-width);
            padding-left: 1.5rem;
            padding-right: 1.5rem;
        }

        /* ========== HEADER / NAV ========== */
        .site-header {
            background: var(--color-bg-nav);
            border-bottom: 2px solid var(--color-border);
            position: sticky;
            top: 0;
            z-index: 1000;
            box-shadow: 0 2px 16px rgba(0, 0, 0, 0.5);
            backdrop-filter: blur(10px);
            -webkit-backdrop-filter: blur(10px);
        }

        .site-header .grid-container {
            position: relative;
        }

        .nav-wrapper {
            display: flex;
            align-items: center;
            justify-content: space-between;
            height: 64px;
            gap: 1.5rem;
        }

        .nav-logo {
            display: flex;
            align-items: center;
            gap: 0.55rem;
            font-size: 1.3rem;
            font-weight: 700;
            color: var(--color-text-bright);
            white-space: nowrap;
            transition: color var(--transition-fast), text-shadow var(--transition-fast);
            letter-spacing: 0.02em;
        }

        .nav-logo:hover {
            color: var(--color-neon);
            text-shadow: 0 0 16px var(--color-neon-glow);
        }

        .logo-icon {
            font-size: 1.5rem;
            color: var(--color-neon);
            filter: drop-shadow(0 0 8px var(--color-neon-glow));
            transition: filter var(--transition-fast);
        }

        .nav-logo:hover .logo-icon {
            filter: drop-shadow(0 0 16px var(--color-neon-glow));
        }

        .nav-links-desktop {
            display: flex;
            align-items: center;
            gap: 0.15rem;
            flex-wrap: wrap;
            justify-content: center;
        }

        .nav-links-desktop li {
            list-style: none;
        }

        .nav-links-desktop a {
            display: inline-flex;
            align-items: center;
            padding: 0.45rem 0.9rem;
            font-size: 0.9rem;
            font-weight: 500;
            color: var(--color-text-light);
            border-radius: var(--radius-sm);
            transition: all var(--transition-fast);
            position: relative;
            white-space: nowrap;
        }

        .nav-links-desktop a::after {
            content: '';
            position: absolute;
            bottom: -2px;
            left: 50%;
            transform: translateX(-50%) scaleX(0);
            width: 60%;
            height: 2.5px;
            background: var(--color-neon);
            border-radius: 2px;
            transition: transform var(--transition-fast);
            box-shadow: 0 0 8px var(--color-neon-glow);
        }

        .nav-links-desktop a:hover {
            color: var(--color-text-bright);
            background: rgba(255, 255, 255, 0.03);
        }

        .nav-links-desktop a:hover::after {
            transform: translateX(-50%) scaleX(1);
        }

        .nav-links-desktop a.active {
            color: var(--color-neon);
            font-weight: 600;
            text-shadow: 0 0 10px var(--color-neon-glow);
        }

        .nav-links-desktop a.active::after {
            transform: translateX(-50%) scaleX(1);
            box-shadow: 0 0 14px var(--color-neon-glow), 0 0 28px var(--color-neon-glow);
        }

        .nav-cta-btn {
            display: inline-flex;
            align-items: center;
            gap: 0.4rem;
            padding: 0.5rem 1.2rem;
            font-size: 0.88rem;
            font-weight: 600;
            color: #000;
            background: var(--color-neon);
            border-radius: 50px;
            transition: all var(--transition-normal);
            white-space: nowrap;
            box-shadow: 0 0 12px var(--color-neon-glow);
            letter-spacing: 0.01em;
        }

        .nav-cta-btn:hover {
            color: #000;
            background: #00ff97;
            box-shadow: 0 0 22px var(--color-neon-glow), 0 0 44px rgba(0, 232, 135, 0.25);
            transform: translateY(-1px);
        }

        .nav-cta-btn:active {
            transform: scale(0.97);
        }

        .nav-mobile-toggle {
            display: none;
            background: transparent;
            border: 1px solid var(--color-border-light);
            color: var(--color-text-bright);
            font-size: 1.4rem;
            padding: 0.4rem 0.65rem;
            border-radius: var(--radius-sm);
            transition: all var(--transition-fast);
            cursor: pointer;
        }

        .nav-mobile-toggle:hover {
            border-color: var(--color-neon);
            color: var(--color-neon);
            box-shadow: 0 0 10px var(--color-neon-glow);
        }

        .nav-mobile-menu {
            display: none;
            flex-direction: column;
            background: var(--color-bg-nav);
            border-top: 1px solid var(--color-border);
            padding: 0.75rem 0;
            max-height: 80vh;
            overflow-y: auto;
            box-shadow: var(--shadow-lg);
        }

        .nav-mobile-menu.active {
            display: flex;
        }

        .nav-mobile-menu a {
            padding: 0.7rem 1.5rem;
            font-size: 0.95rem;
            color: var(--color-text-light);
            border-left: 3px solid transparent;
            transition: all var(--transition-fast);
            display: flex;
            align-items: center;
            gap: 0.4rem;
        }

        .nav-mobile-menu a:hover,
        .nav-mobile-menu a.active {
            color: var(--color-neon);
            background: rgba(0, 232, 135, 0.06);
            border-left-color: var(--color-neon);
        }

        .nav-mobile-menu .mobile-cta {
            margin: 0.5rem 1.5rem;
            justify-content: center;
            background: var(--color-neon);
            color: #000;
            border-radius: 50px;
            font-weight: 600;
            border-left: none;
            text-align: center;
            box-shadow: 0 0 12px var(--color-neon-glow);
        }

        .nav-mobile-menu .mobile-cta:hover {
            background: #00ff97;
            color: #000;
            border-left: none;
            box-shadow: 0 0 20px var(--color-neon-glow);
        }

        /* ========== PAGE HERO ========== */
        .page-hero {
            position: relative;
            padding: 4rem 0 3.5rem;
            background: var(--color-bg-surface);
            background-image: url('assets/images/backpic/back-2.webp');
            background-size: cover;
            background-position: center;
            background-blend-mode: overlay;
            border-bottom: 1px solid var(--color-border);
            overflow: hidden;
        }

        .page-hero::before {
            content: '';
            position: absolute;
            inset: 0;
            background: linear-gradient(180deg, rgba(8, 13, 21, 0.75) 0%, rgba(8, 13, 21, 0.92) 100%);
            z-index: 1;
        }

        .page-hero::after {
            content: '';
            position: absolute;
            top: -60px;
            right: -100px;
            width: 360px;
            height: 360px;
            background: radial-gradient(circle, rgba(0, 232, 135, 0.1) 0%, transparent 70%);
            z-index: 1;
            pointer-events: none;
        }

        .page-hero .grid-container {
            position: relative;
            z-index: 2;
        }

        .page-hero-content {
            text-align: center;
            max-width: 750px;
            margin: 0 auto;
        }

        .page-hero-badge {
            display: inline-block;
            padding: 0.3rem 1rem;
            font-size: 0.8rem;
            font-weight: 600;
            color: var(--color-neon);
            background: var(--color-neon-soft);
            border: 1px solid rgba(0, 232, 135, 0.3);
            border-radius: 50px;
            letter-spacing: 0.04em;
            margin-bottom: 1.2rem;
        }

        .page-hero h1 {
            font-size: 2.6rem;
            font-weight: 800;
            color: var(--color-text-bright);
            margin-bottom: 1rem;
            letter-spacing: 0.01em;
        }

        .page-hero h1 .neon-accent {
            color: var(--color-neon);
            text-shadow: 0 0 18px var(--color-neon-glow);
        }

        .page-hero-desc {
            font-size: 1.1rem;
            color: var(--color-text-light);
            line-height: 1.7;
            margin-bottom: 1.8rem;
        }

        .page-hero-stats {
            display: flex;
            gap: 2rem;
            justify-content: center;
            flex-wrap: wrap;
            margin-top: 0.5rem;
        }

        .hero-stat-item {
            text-align: center;
        }

        .hero-stat-num {
            font-size: 2rem;
            font-weight: 800;
            color: var(--color-neon);
            text-shadow: 0 0 10px var(--color-neon-glow);
            letter-spacing: 0.02em;
        }

        .hero-stat-label {
            font-size: 0.85rem;
            color: var(--color-text-muted);
            margin-top: 0.2rem;
        }

        /* ========== SECTIONS ========== */
        .section {
            padding: 3.5rem 0;
        }

        .section-alt {
            background: var(--color-bg-surface);
            border-top: 1px solid var(--color-border);
            border-bottom: 1px solid var(--color-border);
        }

        .section-header {
            text-align: center;
            margin-bottom: 2.5rem;
        }

        .section-header h2 {
            font-size: 1.9rem;
            font-weight: 700;
            color: var(--color-text-bright);
            margin-bottom: 0.6rem;
        }

        .section-header .section-subtitle {
            font-size: 1rem;
            color: var(--color-text-muted);
            max-width: 550px;
            margin: 0 auto;
        }

        .section-header .neon-line {
            display: inline-block;
            width: 50px;
            height: 3px;
            background: var(--color-neon);
            border-radius: 2px;
            margin-top: 0.5rem;
            box-shadow: 0 0 10px var(--color-neon-glow);
        }

        /* ========== TOOL CARDS GRID ========== */
        .tools-grid {
            display: grid;
            grid-template-columns: repeat(3, 1fr);
            gap: 1.5rem;
        }

        .tool-card {
            background: var(--color-bg-card);
            border: 1px solid var(--color-border);
            border-radius: var(--radius-lg);
            padding: 1.8rem 1.5rem;
            transition: all var(--transition-normal);
            position: relative;
            overflow: hidden;
            display: flex;
            flex-direction: column;
            gap: 0.8rem;
        }

        .tool-card::before {
            content: '';
            position: absolute;
            top: 0;
            left: 0;
            width: 100%;
            height: 3px;
            background: linear-gradient(90deg, var(--color-neon), var(--color-accent));
            opacity: 0;
            transition: opacity var(--transition-normal);
            border-radius: 0 0 2px 2px;
        }

        .tool-card:hover {
            border-color: var(--color-border-light);
            background: var(--color-bg-card-hover);
            box-shadow: var(--shadow-md), 0 0 30px rgba(0, 232, 135, 0.08);
            transform: translateY(-3px);
        }

        .tool-card:hover::before {
            opacity: 1;
        }

        .tool-card-icon {
            width: 50px;
            height: 50px;
            border-radius: var(--radius-md);
            display: flex;
            align-items: center;
            justify-content: center;
            font-size: 1.5rem;
            background: var(--color-neon-soft);
            color: var(--color-neon);
            flex-shrink: 0;
        }

        .tool-card h3 {
            font-size: 1.15rem;
            font-weight: 700;
            color: var(--color-text-bright);
        }

        .tool-card p {
            font-size: 0.9rem;
            color: var(--color-text-light);
            line-height: 1.6;
            flex-grow: 1;
        }

        .tool-card .tool-tag {
            display: inline-flex;
            align-items: center;
            gap: 0.25rem;
            font-size: 0.78rem;
            font-weight: 600;
            color: var(--color-neon);
            background: var(--color-neon-soft);
            padding: 0.25rem 0.65rem;
            border-radius: 50px;
            align-self: flex-start;
        }

        .tool-card .tool-card-img {
            border-radius: var(--radius-md);
            overflow: hidden;
            margin-top: 0.3rem;
            border: 1px solid var(--color-border);
        }

        .tool-card .tool-card-img img {
            width: 100%;
            height: auto;
            aspect-ratio: 16 / 9;
            object-fit: cover;
            transition: transform var(--transition-slow);
        }

        .tool-card:hover .tool-card-img img {
            transform: scale(1.04);
        }

        /* ========== FEATURED TOOL ========== */
        .featured-tool-block {
            background: var(--color-bg-card);
            border: 1px solid var(--color-border);
            border-radius: var(--radius-xl);
            overflow: hidden;
            display: grid;
            grid-template-columns: 1.2fr 1fr;
            box-shadow: var(--shadow-sm);
        }

        .featured-tool-info {
            padding: 2.5rem;
            display: flex;
            flex-direction: column;
            justify-content: center;
            gap: 1rem;
        }

        .featured-tool-info .badge {
            display: inline-block;
            padding: 0.3rem 0.85rem;
            font-size: 0.78rem;
            font-weight: 700;
            color: #000;
            background: var(--color-neon);
            border-radius: 50px;
            align-self: flex-start;
            letter-spacing: 0.03em;
        }

        .featured-tool-info h3 {
            font-size: 1.6rem;
            font-weight: 700;
            color: var(--color-text-bright);
        }

        .featured-tool-info p {
            font-size: 0.95rem;
            color: var(--color-text-light);
            line-height: 1.7;
        }

        .featured-tool-info .btn-neon {
            align-self: flex-start;
            display: inline-flex;
            align-items: center;
            gap: 0.4rem;
            padding: 0.6rem 1.5rem;
            font-size: 0.9rem;
            font-weight: 600;
            color: #000;
            background: var(--color-neon);
            border: none;
            border-radius: 50px;
            cursor: pointer;
            transition: all var(--transition-normal);
            box-shadow: 0 0 12px var(--color-neon-glow);
            letter-spacing: 0.02em;
        }

        .featured-tool-info .btn-neon:hover {
            background: #00ff97;
            box-shadow: 0 0 22px var(--color-neon-glow), 0 0 40px rgba(0, 232, 135, 0.3);
            transform: translateY(-2px);
        }

        .featured-tool-visual {
            background: var(--color-bg-surface);
            display: flex;
            align-items: center;
            justify-content: center;
            padding: 1.5rem;
            border-left: 1px solid var(--color-border);
        }

        .featured-tool-visual img {
            border-radius: var(--radius-md);
            width: 100%;
            height: auto;
            max-height: 300px;
            object-fit: cover;
            box-shadow: var(--shadow-md);
        }

        /* ========== STEPS ========== */
        .steps-row {
            display: grid;
            grid-template-columns: repeat(4, 1fr);
            gap: 1.5rem;
        }

        .step-card {
            text-align: center;
            background: var(--color-bg-card);
            border: 1px solid var(--color-border);
            border-radius: var(--radius-lg);
            padding: 1.8rem 1.2rem;
            transition: all var(--transition-normal);
            position: relative;
        }

        .step-card:hover {
            border-color: var(--color-border-light);
            box-shadow: var(--shadow-md);
            transform: translateY(-2px);
        }

        .step-number {
            width: 44px;
            height: 44px;
            border-radius: 50%;
            background: var(--color-neon-soft);
            color: var(--color-neon);
            display: inline-flex;
            align-items: center;
            justify-content: center;
            font-size: 1.3rem;
            font-weight: 800;
            margin-bottom: 1rem;
            box-shadow: 0 0 10px var(--color-neon-glow);
        }

        .step-card h4 {
            font-size: 1rem;
            font-weight: 700;
            color: var(--color-text-bright);
            margin-bottom: 0.5rem;
        }

        .step-card p {
            font-size: 0.85rem;
            color: var(--color-text-light);
            line-height: 1.55;
        }

        /* ========== COMPARISON TABLE ========== */
        .compare-table-wrap {
            overflow-x: auto;
            border-radius: var(--radius-lg);
            border: 1px solid var(--color-border);
            background: var(--color-bg-card);
        }

        .compare-table {
            width: 100%;
            border-collapse: collapse;
            min-width: 650px;
        }

        .compare-table th,
        .compare-table td {
            padding: 0.9rem 1.2rem;
            text-align: left;
            border-bottom: 1px solid var(--color-border);
            font-size: 0.9rem;
        }

        .compare-table th {
            background: var(--color-bg-surface);
            font-weight: 700;
            color: var(--color-text-bright);
            font-size: 0.85rem;
            text-transform: uppercase;
            letter-spacing: 0.04em;
            white-space: nowrap;
        }

        .compare-table tbody tr {
            transition: background var(--transition-fast);
        }

        .compare-table tbody tr:hover {
            background: rgba(0, 232, 135, 0.04);
        }

        .compare-table .highlight-row {
            background: rgba(0, 232, 135, 0.06);
        }

        .compare-table .check-icon {
            color: var(--color-neon);
            font-weight: 700;
        }

        .compare-table .text-neon {
            color: var(--color-neon);
            font-weight: 600;
        }

        /* ========== FAQ ========== */
        .faq-list {
            max-width: 800px;
            margin: 0 auto;
            display: flex;
            flex-direction: column;
            gap: 0.75rem;
        }

        .faq-item {
            background: var(--color-bg-card);
            border: 1px solid var(--color-border);
            border-radius: var(--radius-md);
            overflow: hidden;
            transition: all var(--transition-normal);
        }

        .faq-item:hover {
            border-color: var(--color-border-light);
        }

        .faq-question {
            width: 100%;
            background: transparent;
            border: none;
            color: var(--color-text-bright);
            font-size: 1rem;
            font-weight: 600;
            padding: 1.1rem 1.3rem;
            text-align: left;
            cursor: pointer;
            display: flex;
            justify-content: space-between;
            align-items: center;
            gap: 0.8rem;
            transition: color var(--transition-fast);
            font-family: inherit;
        }

        .faq-question:hover {
            color: var(--color-neon);
        }

        .faq-question .faq-icon {
            font-size: 0.85rem;
            color: var(--color-neon);
            transition: transform var(--transition-normal);
            flex-shrink: 0;
        }

        .faq-item.open .faq-question .faq-icon {
            transform: rotate(180deg);
        }

        .faq-answer {
            max-height: 0;
            overflow: hidden;
            transition: max-height var(--transition-slow), padding var(--transition-slow);
        }

        .faq-item.open .faq-answer {
            max-height: 600px;
        }

        .faq-answer-inner {
            padding: 0 1.3rem 1.2rem;
            font-size: 0.9rem;
            color: var(--color-text-light);
            line-height: 1.7;
            border-top: 1px solid var(--color-border);
            margin-top: 0;
            padding-top: 1rem;
        }

        /* ========== CTA SECTION ========== */
        .cta-section {
            text-align: center;
            padding: 3.5rem 0;
            background: var(--color-bg-surface);
            border-top: 1px solid var(--color-border);
            border-bottom: 1px solid var(--color-border);
            position: relative;
            overflow: hidden;
        }

        .cta-section::before {
            content: '';
            position: absolute;
            top: -80px;
            left: 50%;
            transform: translateX(-50%);
            width: 500px;
            height: 500px;
            background: radial-gradient(circle, rgba(0, 232, 135, 0.07) 0%, transparent 70%);
            pointer-events: none;
        }

        .cta-section .grid-container {
            position: relative;
            z-index: 1;
        }

        .cta-section h2 {
            font-size: 1.8rem;
            font-weight: 700;
            color: var(--color-text-bright);
            margin-bottom: 0.8rem;
        }

        .cta-section p {
            font-size: 1rem;
            color: var(--color-text-light);
            margin-bottom: 1.8rem;
        }

        .cta-buttons {
            display: flex;
            gap: 1rem;
            justify-content: center;
            flex-wrap: wrap;
        }

        .btn-neon-lg {
            display: inline-flex;
            align-items: center;
            gap: 0.5rem;
            padding: 0.75rem 2rem;
            font-size: 1rem;
            font-weight: 700;
            color: #000;
            background: var(--color-neon);
            border: none;
            border-radius: 50px;
            cursor: pointer;
            transition: all var(--transition-normal);
            box-shadow: 0 0 16px var(--color-neon-glow);
            letter-spacing: 0.02em;
        }

        .btn-neon-lg:hover {
            background: #00ff97;
            box-shadow: 0 0 28px var(--color-neon-glow), 0 0 50px rgba(0, 232, 135, 0.35);
            transform: translateY(-3px);
        }

        .btn-outline-lg {
            display: inline-flex;
            align-items: center;
            gap: 0.5rem;
            padding: 0.75rem 2rem;
            font-size: 1rem;
            font-weight: 600;
            color: var(--color-text-bright);
            background: transparent;
            border: 2px solid var(--color-border-light);
            border-radius: 50px;
            cursor: pointer;
            transition: all var(--transition-normal);
        }

        .btn-outline-lg:hover {
            border-color: var(--color-neon);
            color: var(--color-neon);
            box-shadow: 0 0 16px var(--color-neon-glow);
        }

        /* ========== FOOTER ========== */
        .site-footer {
            background: var(--color-bg-nav);
            border-top: 2px solid var(--color-border);
            padding: 3rem 0 1.5rem;
            color: var(--color-text-light);
        }

        .site-footer .grid-container {
            max-width: var(--max-width);
        }

        .footer-grid {
            display: grid;
            grid-template-columns: 1.5fr 1fr 1fr 1.2fr;
            gap: 2rem;
            margin-bottom: 2rem;
        }

        .footer-col h4 {
            font-size: 1rem;
            font-weight: 700;
            color: var(--color-text-bright);
            margin-bottom: 1rem;
            letter-spacing: 0.02em;
        }

        .footer-col ul li {
            margin-bottom: 0.5rem;
        }

        .footer-col ul li a {
            font-size: 0.88rem;
            color: var(--color-text-light);
            transition: color var(--transition-fast);
        }

        .footer-col ul li a:hover {
            color: var(--color-neon);
        }

        .footer-logo-text {
            color: var(--color-neon);
            font-weight: 700;
            font-size: 1.1rem;
        }

        .footer-bottom {
            border-top: 1px solid var(--color-border);
            padding-top: 1.5rem;
            text-align: center;
            font-size: 0.82rem;
            color: var(--color-text-muted);
        }

        /* ========== RESPONSIVE ========== */
        @media screen and (max-width: 1024px) {
            .nav-links-desktop {
                gap: 0;
            }
            .nav-links-desktop a {
                padding: 0.4rem 0.55rem;
                font-size: 0.82rem;
            }
            .nav-cta-desktop {
                padding: 0.45rem 0.9rem;
                font-size: 0.8rem;
            }
            .tools-grid {
                grid-template-columns: repeat(2, 1fr);
            }
            .steps-row {
                grid-template-columns: repeat(2, 1fr);
            }
            .featured-tool-block {
                grid-template-columns: 1fr;
            }
            .featured-tool-visual {
                border-left: none;
                border-top: 1px solid var(--color-border);
                padding: 1rem;
            }
            .footer-grid {
                grid-template-columns: 1fr 1fr;
                gap: 1.5rem;
            }
            .page-hero h1 {
                font-size: 2.1rem;
            }
        }

        @media screen and (max-width: 768px) {
            .nav-links-desktop {
                display: none;
            }
            .nav-cta-desktop {
                display: none;
            }
            .nav-mobile-toggle {
                display: block;
            }
            .nav-wrapper {
                height: 56px;
            }
            .nav-logo {
                font-size: 1.15rem;
            }
            .tools-grid {
                grid-template-columns: 1fr 1fr;
                gap: 1rem;
            }
            .steps-row {
                grid-template-columns: 1fr 1fr;
                gap: 1rem;
            }
            .page-hero {
                padding: 3rem 0 2.5rem;
            }
            .page-hero h1 {
                font-size: 1.7rem;
            }
            .page-hero-desc {
                font-size: 0.95rem;
            }
            .section {
                padding: 2.5rem 0;
            }
            .section-header h2 {
                font-size: 1.5rem;
            }
            .footer-grid {
                grid-template-columns: 1fr;
                gap: 1.2rem;
            }
            .featured-tool-info {
                padding: 1.5rem;
            }
            .hero-stat-num {
                font-size: 1.5rem;
            }
            .hero-stats {
                gap: 1.2rem;
            }
        }

        @media screen and (max-width: 520px) {
            .tools-grid {
                grid-template-columns: 1fr;
            }
            .steps-row {
                grid-template-columns: 1fr;
            }
            .page-hero h1 {
                font-size: 1.45rem;
            }
            .page-hero-stats {
                flex-direction: column;
                gap: 0.8rem;
            }
            .cta-buttons {
                flex-direction: column;
                align-items: center;
            }
            .tool-card {
                padding: 1.3rem 1.1rem;
            }
            .compare-table th,
            .compare-table td {
                padding: 0.6rem 0.7rem;
                font-size: 0.78rem;
            }
            .grid-container {
                padding-left: 1rem;
                padding-right: 1rem;
            }
            .nav-mobile-menu a {
                padding: 0.6rem 1.2rem;
                font-size: 0.9rem;
            }
        }

        /* ========== UTILITY ANIMATIONS ========== */
        @keyframes neonPulse {
            0%,
            100% {
                box-shadow: 0 0 12px var(--color-neon-glow);
            }
            50% {
                box-shadow: 0 0 22px var(--color-neon-glow), 0 0 38px rgba(0, 232, 135, 0.25);
            }
        }

        .pulse-neon {
            animation: neonPulse 2.5s ease-in-out infinite;
        }

        /* Foundation overrides */
        .grid-container {
            max-width: var(--max-width);
        }

        @media screen and (max-width: 640px) {
            .grid-container {
                padding-left: 1rem;
                padding-right: 1rem;
            }
        }

/* roulang page: category4 */
:root {
            --color-primary: #00c6ff;
            --color-primary-glow: #00e0ff;
            --color-primary-dark: #009fcc;
            --color-accent: #f0a500;
            --color-accent-glow: #ffc940;
            --color-bg: #f8f9fb;
            --color-surface: #ffffff;
            --color-surface-alt: #f1f3f6;
            --color-text: #1a1d28;
            --color-text-secondary: #4a4f5c;
            --color-text-light: #7b8191;
            --color-nav-bg: #0a0e17;
            --color-nav-bg-alt: #0f1520;
            --color-nav-border: #1a2233;
            --color-neon-line: #00c6ff;
            --color-border: #e2e5ea;
            --color-border-light: #eef0f4;
            --radius-sm: 6px;
            --radius-md: 10px;
            --radius-lg: 16px;
            --radius-xl: 20px;
            --shadow-sm: 0 1px 3px rgba(0, 0, 0, 0.06);
            --shadow-md: 0 4px 16px rgba(0, 0, 0, 0.08);
            --shadow-lg: 0 8px 32px rgba(0, 0, 0, 0.12);
            --shadow-glow: 0 0 24px rgba(0, 198, 255, 0.35);
            --shadow-glow-sm: 0 0 10px rgba(0, 198, 255, 0.25);
            --transition-fast: 0.18s ease;
            --transition-smooth: 0.3s cubic-bezier(0.4, 0, 0.2, 1);
            --font-heading: 'PingFang SC', 'Microsoft YaHei', 'Hiragino Sans GB', -apple-system, BlinkMacSystemFont, sans-serif;
            --font-body: 'PingFang SC', 'Microsoft YaHei', 'Hiragino Sans GB', -apple-system, BlinkMacSystemFont, sans-serif;
        }

        *,
        *::before,
        *::after {
            box-sizing: border-box;
        }

        html {
            scroll-behavior: smooth;
            -webkit-font-smoothing: antialiased;
            -moz-osx-font-smoothing: grayscale;
        }

        body {
            font-family: var(--font-body);
            background-color: var(--color-bg);
            color: var(--color-text);
            line-height: 1.7;
            margin: 0;
            padding: 0;
            overflow-x: hidden;
            min-height: 100vh;
        }

        img {
            max-width: 100%;
            height: auto;
            display: block;
        }

        a {
            text-decoration: none;
            color: inherit;
            transition: color var(--transition-fast);
        }

        button {
            cursor: pointer;
            font-family: inherit;
        }

        ul {
            list-style: none;
            padding: 0;
            margin: 0;
        }

        .grid-container {
            max-width: 1200px;
            padding-left: 1.25rem;
            padding-right: 1.25rem;
        }

        @media (min-width: 640px) {
            .grid-container {
                padding-left: 1.5rem;
                padding-right: 1.5rem;
            }
        }
        @media (min-width: 1024px) {
            .grid-container {
                padding-left: 2rem;
                padding-right: 2rem;
            }
        }

        /* ========== HEADER / NAV ========== */
        .site-header {
            background: var(--color-nav-bg);
            border-bottom: 1px solid var(--color-nav-border);
            position: sticky;
            top: 0;
            z-index: 999;
            box-shadow: 0 2px 20px rgba(0, 0, 0, 0.35);
            transition: box-shadow var(--transition-smooth);
        }
        .site-header::after {
            content: '';
            position: absolute;
            bottom: 0;
            left: 0;
            right: 0;
            height: 2px;
            background: linear-gradient(90deg, transparent 0%, var(--color-neon-line) 30%, var(--color-neon-line) 70%, transparent 100%);
            opacity: 0.8;
            pointer-events: none;
        }
        .nav-wrapper {
            display: flex;
            align-items: center;
            justify-content: space-between;
            padding: 0.6rem 0;
            gap: 1rem;
            flex-wrap: nowrap;
        }
        .nav-logo {
            display: flex;
            align-items: center;
            gap: 0.5rem;
            font-family: var(--font-heading);
            font-weight: 700;
            font-size: 1.25rem;
            color: #ffffff;
            white-space: nowrap;
            flex-shrink: 0;
            transition: text-shadow var(--transition-fast);
        }
        .nav-logo:hover {
            text-shadow: 0 0 18px rgba(0, 198, 255, 0.55);
            color: #ffffff;
        }
        .logo-icon {
            font-size: 1.4rem;
            color: var(--color-primary);
            text-shadow: 0 0 12px rgba(0, 198, 255, 0.5);
        }
        .nav-links-desktop {
            display: flex;
            align-items: center;
            gap: 0.15rem;
            flex-wrap: wrap;
            justify-content: center;
            list-style: none;
            margin: 0;
            padding: 0;
        }
        .nav-links-desktop li {
            list-style: none;
            margin: 0;
            padding: 0;
        }
        .nav-links-desktop a {
            display: inline-block;
            padding: 0.5rem 0.9rem;
            font-size: 0.9rem;
            font-weight: 500;
            color: #c4cdd6;
            border-radius: var(--radius-sm);
            transition: all var(--transition-fast);
            white-space: nowrap;
            position: relative;
            letter-spacing: 0.02em;
        }
        .nav-links-desktop a:hover {
            color: #ffffff;
            background: rgba(255, 255, 255, 0.04);
            text-shadow: 0 0 8px rgba(0, 198, 255, 0.3);
        }
        .nav-links-desktop a.active {
            color: #ffffff;
            background: rgba(0, 198, 255, 0.1);
            text-shadow: 0 0 14px rgba(0, 198, 255, 0.6);
            box-shadow: inset 0 -2px 0 0 var(--color-primary);
            font-weight: 600;
        }
        .nav-cta-btn {
            display: inline-flex;
            align-items: center;
            gap: 0.4rem;
            padding: 0.55rem 1.2rem;
            font-size: 0.88rem;
            font-weight: 600;
            color: #ffffff;
            background: var(--color-primary);
            border-radius: 50px;
            white-space: nowrap;
            flex-shrink: 0;
            transition: all var(--transition-smooth);
            border: 2px solid var(--color-primary);
            box-shadow: 0 0 16px rgba(0, 198, 255, 0.3);
        }
        .nav-cta-btn:hover {
            background: var(--color-primary-glow);
            border-color: var(--color-primary-glow);
            color: #ffffff;
            box-shadow: 0 0 28px rgba(0, 198, 255, 0.5);
            transform: translateY(-1px);
        }
        .nav-cta-desktop {
            display: none;
        }
        @media (min-width: 1024px) {
            .nav-cta-desktop {
                display: inline-flex;
            }
        }
        @media (max-width: 1023px) {
            .nav-links-desktop {
                display: none;
            }
            .nav-cta-desktop {
                display: none;
            }
        }
        .nav-mobile-toggle {
            display: flex;
            align-items: center;
            justify-content: center;
            width: 40px;
            height: 40px;
            background: rgba(255, 255, 255, 0.05);
            border: 1px solid rgba(255, 255, 255, 0.15);
            border-radius: var(--radius-sm);
            color: #ffffff;
            font-size: 1.3rem;
            transition: all var(--transition-fast);
            flex-shrink: 0;
        }
        .nav-mobile-toggle:hover {
            background: rgba(255, 255, 255, 0.1);
            border-color: var(--color-primary);
            box-shadow: 0 0 12px rgba(0, 198, 255, 0.25);
        }
        @media (min-width: 1024px) {
            .nav-mobile-toggle {
                display: none;
            }
        }
        .nav-mobile-menu {
            display: none;
            flex-direction: column;
            padding: 0.75rem 0 1rem;
            gap: 0.2rem;
            border-top: 1px solid var(--color-nav-border);
            margin-top: 0.3rem;
        }
        .nav-mobile-menu.is-open {
            display: flex;
        }
        .nav-mobile-menu a {
            display: block;
            padding: 0.7rem 1rem;
            font-size: 0.95rem;
            font-weight: 500;
            color: #c4cdd6;
            border-radius: var(--radius-sm);
            transition: all var(--transition-fast);
        }
        .nav-mobile-menu a:hover {
            color: #ffffff;
            background: rgba(255, 255, 255, 0.04);
        }
        .nav-mobile-menu a.active {
            color: #ffffff;
            background: rgba(0, 198, 255, 0.12);
            font-weight: 600;
            border-left: 3px solid var(--color-primary);
            text-shadow: 0 0 8px rgba(0, 198, 255, 0.4);
        }
        .nav-mobile-menu .mobile-cta {
            display: inline-flex;
            align-items: center;
            justify-content: center;
            gap: 0.4rem;
            margin-top: 0.5rem;
            padding: 0.65rem 1.4rem;
            background: var(--color-primary);
            color: #ffffff;
            border-radius: 50px;
            font-weight: 600;
            text-align: center;
            box-shadow: 0 0 14px rgba(0, 198, 255, 0.3);
        }
        .nav-mobile-menu .mobile-cta:hover {
            background: var(--color-primary-glow);
            box-shadow: 0 0 22px rgba(0, 198, 255, 0.5);
            color: #ffffff;
        }

        /* ========== PAGE BANNER ========== */
        .page-banner {
            position: relative;
            background: linear-gradient(135deg, #0a0e17 0%, #131d2e 40%, #0f1925 100%);
            background-image: url('assets/images/backpic/back-1.webp');
            background-size: cover;
            background-position: center 30%;
            background-repeat: no-repeat;
            padding: 5rem 0;
            text-align: center;
            overflow: hidden;
            isolation: isolate;
        }
        .page-banner::before {
            content: '';
            position: absolute;
            inset: 0;
            background: linear-gradient(180deg, rgba(10, 14, 23, 0.82) 0%, rgba(15, 25, 35, 0.75) 100%);
            z-index: 1;
        }
        .page-banner::after {
            content: '';
            position: absolute;
            bottom: 0;
            left: 0;
            right: 0;
            height: 3px;
            background: linear-gradient(90deg, transparent, var(--color-neon-line), transparent);
            z-index: 2;
            opacity: 0.7;
        }
        .page-banner .banner-content {
            position: relative;
            z-index: 3;
        }
        .page-banner .banner-badge {
            display: inline-block;
            padding: 0.35rem 1rem;
            font-size: 0.82rem;
            font-weight: 600;
            color: var(--color-primary);
            background: rgba(0, 198, 255, 0.08);
            border: 1px solid rgba(0, 198, 255, 0.25);
            border-radius: 50px;
            letter-spacing: 0.04em;
            margin-bottom: 1.2rem;
        }
        .page-banner h1 {
            font-family: var(--font-heading);
            font-size: 2.6rem;
            font-weight: 800;
            color: #ffffff;
            margin: 0 0 0.8rem;
            letter-spacing: 0.03em;
            text-shadow: 0 0 40px rgba(0, 198, 255, 0.3);
            line-height: 1.25;
        }
        .page-banner .banner-subtitle {
            font-size: 1.1rem;
            color: #c4cdd6;
            max-width: 620px;
            margin: 0 auto 1.5rem;
            line-height: 1.7;
        }
        .page-banner .banner-stats-row {
            display: flex;
            flex-wrap: wrap;
            justify-content: center;
            gap: 2rem;
            margin-top: 1.8rem;
        }
        .page-banner .banner-stat {
            text-align: center;
        }
        .page-banner .banner-stat .stat-num {
            font-size: 2rem;
            font-weight: 800;
            color: var(--color-primary);
            text-shadow: 0 0 20px rgba(0, 198, 255, 0.4);
            line-height: 1.1;
        }
        .page-banner .banner-stat .stat-label {
            font-size: 0.8rem;
            color: #8895a6;
            margin-top: 0.2rem;
            letter-spacing: 0.03em;
        }
        @media (max-width: 768px) {
            .page-banner {
                padding: 3.5rem 0;
            }
            .page-banner h1 {
                font-size: 1.8rem;
            }
            .page-banner .banner-subtitle {
                font-size: 0.95rem;
            }
            .page-banner .banner-stats-row {
                gap: 1.2rem;
            }
            .page-banner .banner-stat .stat-num {
                font-size: 1.5rem;
            }
        }

        /* ========== SECTIONS ========== */
        .section {
            padding: 3.5rem 0;
        }
        .section-alt {
            background: var(--color-surface-alt);
        }
        .section-dark {
            background: #0f1520;
            color: #e0e4ea;
        }
        .section-header {
            text-align: center;
            margin-bottom: 2.5rem;
        }
        .section-header h2 {
            font-family: var(--font-heading);
            font-size: 2rem;
            font-weight: 700;
            color: var(--color-text);
            margin: 0 0 0.5rem;
            letter-spacing: 0.02em;
        }
        .section-dark .section-header h2 {
            color: #ffffff;
        }
        .section-header .section-subtitle {
            font-size: 1rem;
            color: var(--color-text-light);
            max-width: 550px;
            margin: 0 auto;
            line-height: 1.6;
        }
        .section-dark .section-header .section-subtitle {
            color: #8895a6;
        }
        .section-divider {
            width: 50px;
            height: 3px;
            background: var(--color-primary);
            border-radius: 2px;
            margin: 0.6rem auto 0;
            box-shadow: 0 0 12px rgba(0, 198, 255, 0.3);
        }
        @media (max-width: 768px) {
            .section {
                padding: 2.5rem 0;
            }
            .section-header h2 {
                font-size: 1.55rem;
            }
        }

        /* ========== CARDS ========== */
        .strategy-card {
            background: var(--color-surface);
            border-radius: var(--radius-lg);
            padding: 1.8rem 1.6rem;
            box-shadow: var(--shadow-sm);
            border: 1px solid var(--color-border-light);
            transition: all var(--transition-smooth);
            height: 100%;
            display: flex;
            flex-direction: column;
            position: relative;
            overflow: hidden;
        }
        .strategy-card:hover {
            box-shadow: var(--shadow-lg);
            transform: translateY(-3px);
            border-color: rgba(0, 198, 255, 0.2);
        }
        .strategy-card::after {
            content: '';
            position: absolute;
            top: 0;
            left: 0;
            right: 0;
            height: 3px;
            background: linear-gradient(90deg, var(--color-primary), transparent);
            opacity: 0;
            transition: opacity var(--transition-smooth);
        }
        .strategy-card:hover::after {
            opacity: 1;
        }
        .strategy-card .card-icon-wrap {
            width: 52px;
            height: 52px;
            border-radius: var(--radius-md);
            display: flex;
            align-items: center;
            justify-content: center;
            font-size: 1.5rem;
            margin-bottom: 1rem;
            flex-shrink: 0;
            background: rgba(0, 198, 255, 0.07);
            color: var(--color-primary);
        }
        .strategy-card h3 {
            font-family: var(--font-heading);
            font-size: 1.15rem;
            font-weight: 700;
            margin: 0 0 0.5rem;
            color: var(--color-text);
            letter-spacing: 0.02em;
        }
        .strategy-card p {
            font-size: 0.9rem;
            color: var(--color-text-secondary);
            line-height: 1.7;
            margin: 0 0 0.8rem;
            flex-grow: 1;
        }
        .strategy-card .card-tag {
            display: inline-block;
            padding: 0.25rem 0.7rem;
            font-size: 0.75rem;
            font-weight: 600;
            color: var(--color-primary-dark);
            background: rgba(0, 198, 255, 0.08);
            border-radius: 50px;
            letter-spacing: 0.03em;
            align-self: flex-start;
        }
        .strategy-card .card-img {
            width: 100%;
            height: 160px;
            object-fit: cover;
            border-radius: var(--radius-md);
            margin-bottom: 1rem;
        }
        @media (max-width: 768px) {
            .strategy-card {
                padding: 1.4rem 1.2rem;
            }
            .strategy-card .card-img {
                height: 130px;
            }
        }

        /* ========== DATA STATS ROW ========== */
        .stats-row {
            display: flex;
            flex-wrap: wrap;
            gap: 1.5rem;
            justify-content: center;
        }
        .stat-block {
            background: var(--color-surface);
            border-radius: var(--radius-lg);
            padding: 1.6rem 2rem;
            text-align: center;
            box-shadow: var(--shadow-sm);
            border: 1px solid var(--color-border-light);
            flex: 1 1 180px;
            min-width: 150px;
            max-width: 240px;
            transition: all var(--transition-smooth);
        }
        .stat-block:hover {
            box-shadow: var(--shadow-md);
            transform: translateY(-2px);
        }
        .stat-block .stat-value {
            font-family: var(--font-heading);
            font-size: 2.2rem;
            font-weight: 800;
            color: var(--color-primary);
            letter-spacing: 0.02em;
            line-height: 1.1;
            text-shadow: 0 0 14px rgba(0, 198, 255, 0.2);
        }
        .stat-block .stat-desc {
            font-size: 0.85rem;
            color: var(--color-text-light);
            margin-top: 0.3rem;
            letter-spacing: 0.02em;
        }
        @media (max-width: 768px) {
            .stat-block {
                flex: 1 1 130px;
                min-width: 120px;
                padding: 1.2rem 1rem;
            }
            .stat-block .stat-value {
                font-size: 1.6rem;
            }
        }

        /* ========== ANALYSIS BLOCK ========== */
        .analysis-block {
            background: var(--color-surface);
            border-radius: var(--radius-xl);
            padding: 2.5rem 2rem;
            box-shadow: var(--shadow-md);
            border: 1px solid var(--color-border-light);
            margin-bottom: 2rem;
        }
        .analysis-block h3 {
            font-family: var(--font-heading);
            font-size: 1.4rem;
            font-weight: 700;
            margin: 0 0 1rem;
            color: var(--color-text);
            display: flex;
            align-items: center;
            gap: 0.5rem;
        }
        .analysis-block h3 i {
            color: var(--color-primary);
            font-size: 1.3rem;
        }
        .analysis-block p {
            font-size: 0.95rem;
            color: var(--color-text-secondary);
            line-height: 1.8;
            margin: 0 0 1rem;
        }
        .analysis-block .formula-highlight {
            display: block;
            background: #0f1520;
            color: #00e0ff;
            padding: 1rem 1.5rem;
            border-radius: var(--radius-md);
            font-family: 'SF Mono', 'Fira Code', 'Consolas', monospace;
            font-size: 1rem;
            letter-spacing: 0.04em;
            margin: 1rem 0;
            text-align: center;
            border-left: 3px solid var(--color-primary);
            box-shadow: 0 0 20px rgba(0, 198, 255, 0.08);
        }
        @media (max-width: 768px) {
            .analysis-block {
                padding: 1.5rem 1.2rem;
            }
            .analysis-block .formula-highlight {
                font-size: 0.85rem;
                padding: 0.7rem 1rem;
            }
        }

        /* ========== COMPARISON TABLE ========== */
        .compare-table-wrap {
            overflow-x: auto;
            -webkit-overflow-scrolling: touch;
            border-radius: var(--radius-lg);
            box-shadow: var(--shadow-md);
            border: 1px solid var(--color-border-light);
        }
        .compare-table {
            width: 100%;
            border-collapse: collapse;
            background: var(--color-surface);
            min-width: 650px;
        }
        .compare-table thead th {
            background: #0f1520;
            color: #ffffff;
            padding: 1rem 1.2rem;
            font-weight: 600;
            font-size: 0.9rem;
            letter-spacing: 0.03em;
            text-align: left;
            white-space: nowrap;
        }
        .compare-table tbody td {
            padding: 0.9rem 1.2rem;
            font-size: 0.9rem;
            color: var(--color-text-secondary);
            border-bottom: 1px solid var(--color-border-light);
            vertical-align: top;
        }
        .compare-table tbody tr:hover td {
            background: rgba(0, 198, 255, 0.02);
        }
        .compare-table .badge-rec {
            display: inline-block;
            padding: 0.2rem 0.6rem;
            font-size: 0.72rem;
            font-weight: 700;
            color: #ffffff;
            background: var(--color-primary);
            border-radius: 50px;
            letter-spacing: 0.04em;
        }
        .compare-table .badge-risk-low {
            display: inline-block;
            padding: 0.2rem 0.6rem;
            font-size: 0.72rem;
            font-weight: 600;
            color: #0d7a3e;
            background: #e6f7ee;
            border-radius: 50px;
        }
        .compare-table .badge-risk-mid {
            display: inline-block;
            padding: 0.2rem 0.6rem;
            font-size: 0.72rem;
            font-weight: 600;
            color: #b8760a;
            background: #fef9e7;
            border-radius: 50px;
        }
        .compare-table .badge-risk-high {
            display: inline-block;
            padding: 0.2rem 0.6rem;
            font-size: 0.72rem;
            font-weight: 600;
            color: #b91c1c;
            background: #fef2f2;
            border-radius: 50px;
        }

        /* ========== CASE CARD ========== */
        .case-card {
            background: var(--color-surface);
            border-radius: var(--radius-lg);
            padding: 2rem 1.8rem;
            box-shadow: var(--shadow-sm);
            border: 1px solid var(--color-border-light);
            transition: all var(--transition-smooth);
            margin-bottom: 1.5rem;
        }
        .case-card:hover {
            box-shadow: var(--shadow-md);
        }
        .case-card .case-header {
            display: flex;
            align-items: center;
            gap: 0.8rem;
            margin-bottom: 1rem;
            flex-wrap: wrap;
        }
        .case-card .case-num {
            width: 36px;
            height: 36px;
            border-radius: 50%;
            background: var(--color-primary);
            color: #ffffff;
            display: flex;
            align-items: center;
            justify-content: center;
            font-weight: 700;
            font-size: 0.9rem;
            flex-shrink: 0;
            box-shadow: 0 0 12px rgba(0, 198, 255, 0.3);
        }
        .case-card h4 {
            font-family: var(--font-heading);
            font-size: 1.1rem;
            font-weight: 700;
            margin: 0;
            color: var(--color-text);
        }
        .case-card p {
            font-size: 0.9rem;
            color: var(--color-text-secondary);
            line-height: 1.8;
            margin: 0;
        }

        /* ========== FAQ ========== */
        .faq-list details {
            background: var(--color-surface);
            border-radius: var(--radius-md);
            border: 1px solid var(--color-border-light);
            margin-bottom: 0.7rem;
            overflow: hidden;
            transition: all var(--transition-fast);
            box-shadow: var(--shadow-sm);
        }
        .faq-list details:hover {
            border-color: rgba(0, 198, 255, 0.25);
            box-shadow: var(--shadow-md);
        }
        .faq-list summary {
            padding: 1.1rem 1.4rem;
            font-weight: 600;
            font-size: 1rem;
            cursor: pointer;
            color: var(--color-text);
            display: flex;
            align-items: center;
            justify-content: space-between;
            gap: 1rem;
            user-select: none;
            letter-spacing: 0.02em;
            transition: color var(--transition-fast);
        }
        .faq-list summary:hover {
            color: var(--color-primary);
        }
        .faq-list summary::after {
            content: '\f078';
            font-family: 'Font Awesome 6 Free';
            font-weight: 900;
            font-size: 0.75rem;
            color: var(--color-text-light);
            transition: transform var(--transition-fast);
            flex-shrink: 0;
        }
        .faq-list details[open] summary::after {
            transform: rotate(180deg);
            color: var(--color-primary);
        }
        .faq-list details[open] summary {
            color: var(--color-primary);
        }
        .faq-list .faq-answer {
            padding: 0 1.4rem 1.3rem;
            font-size: 0.9rem;
            color: var(--color-text-secondary);
            line-height: 1.8;
        }

        /* ========== CTA SECTION ========== */
        .cta-section {
            background: linear-gradient(135deg, #0a0e17 0%, #131d2e 50%, #0f1925 100%);
            padding: 4rem 0;
            text-align: center;
            position: relative;
            overflow: hidden;
            isolation: isolate;
        }
        .cta-section::before {
            content: '';
            position: absolute;
            inset: 0;
            background: radial-gradient(ellipse at center, rgba(0, 198, 255, 0.06) 0%, transparent 70%);
            z-index: 1;
            pointer-events: none;
        }
        .cta-section .cta-content {
            position: relative;
            z-index: 2;
        }
        .cta-section h2 {
            font-family: var(--font-heading);
            font-size: 2rem;
            font-weight: 700;
            color: #ffffff;
            margin: 0 0 0.8rem;
            letter-spacing: 0.03em;
        }
        .cta-section p {
            font-size: 1rem;
            color: #c4cdd6;
            max-width: 500px;
            margin: 0 auto 1.8rem;
            line-height: 1.7;
        }
        .btn-cta-glow {
            display: inline-flex;
            align-items: center;
            gap: 0.5rem;
            padding: 0.8rem 2.2rem;
            font-size: 1rem;
            font-weight: 700;
            color: #ffffff;
            background: var(--color-primary);
            border-radius: 50px;
            border: 2px solid var(--color-primary);
            box-shadow: 0 0 28px rgba(0, 198, 255, 0.4);
            transition: all var(--transition-smooth);
            letter-spacing: 0.03em;
        }
        .btn-cta-glow:hover {
            background: var(--color-primary-glow);
            border-color: var(--color-primary-glow);
            color: #ffffff;
            box-shadow: 0 0 44px rgba(0, 198, 255, 0.6);
            transform: translateY(-2px);
        }
        .btn-outline-light {
            display: inline-flex;
            align-items: center;
            gap: 0.5rem;
            padding: 0.8rem 2.2rem;
            font-size: 1rem;
            font-weight: 600;
            color: #ffffff;
            background: transparent;
            border-radius: 50px;
            border: 2px solid rgba(255, 255, 255, 0.35);
            transition: all var(--transition-smooth);
            letter-spacing: 0.03em;
            margin-left: 0.8rem;
        }
        .btn-outline-light:hover {
            border-color: #ffffff;
            color: #ffffff;
            box-shadow: 0 0 20px rgba(255, 255, 255, 0.15);
            transform: translateY(-2px);
        }
        @media (max-width: 768px) {
            .cta-section {
                padding: 3rem 0;
            }
            .cta-section h2 {
                font-size: 1.5rem;
            }
            .btn-outline-light {
                margin-left: 0;
                margin-top: 0.8rem;
            }
        }

        /* ========== FOOTER ========== */
        .site-footer {
            background: #0a0e17;
            color: #c4cdd6;
            padding: 3rem 0 1.5rem;
            border-top: 1px solid #1a2233;
            font-size: 0.9rem;
        }
        .site-footer .footer-grid {
            display: grid;
            grid-template-columns: repeat(auto-fit, minmax(200px, 1fr));
            gap: 2rem;
            margin-bottom: 2rem;
        }
        .site-footer h4 {
            color: #ffffff;
            font-family: var(--font-heading);
            font-size: 1rem;
            font-weight: 700;
            margin: 0 0 0.8rem;
            letter-spacing: 0.03em;
        }
        .site-footer ul li {
            margin-bottom: 0.4rem;
        }
        .site-footer ul li a {
            color: #8895a6;
            font-size: 0.88rem;
            transition: color var(--transition-fast);
        }
        .site-footer ul li a:hover {
            color: var(--color-primary);
            text-shadow: 0 0 6px rgba(0, 198, 255, 0.25);
        }
        .footer-logo-text {
            color: #ffffff;
            font-weight: 700;
            font-size: 1.05rem;
        }
        .footer-bottom {
            text-align: center;
            padding-top: 1.5rem;
            border-top: 1px solid #1a2233;
            color: #667080;
            font-size: 0.8rem;
            letter-spacing: 0.02em;
        }
        @media (max-width: 768px) {
            .site-footer .footer-grid {
                grid-template-columns: 1fr 1fr;
                gap: 1.5rem;
            }
        }
        @media (max-width: 520px) {
            .site-footer .footer-grid {
                grid-template-columns: 1fr;
                gap: 1.2rem;
            }
        }

        /* ========== UTILS ========== */
        .text-center {
            text-align: center;
        }
        .mt-2 {
            margin-top: 2rem;
        }
        .mb-2 {
            margin-bottom: 2rem;
        }
        .gap-row {
            display: flex;
            flex-wrap: wrap;
            gap: 1.5rem;
        }
        .sr-only {
            position: absolute;
            width: 1px;
            height: 1px;
            padding: 0;
            margin: -1px;
            overflow: hidden;
            clip: rect(0, 0, 0, 0);
            border: 0;
        }