/* roulang page: index */
:root {
            --brand-600: #1f568c;
            --brand-700: #17436f;
            --brand-800: #102f4e;
            --brand-900: #0b2037;
            --accent-400: #d9b57a;
            --accent-500: #cba05c;
            --bg-light: #f5f7fa;
            --text-dark: #102a3a;
            --text-weak: #64748b;
            --border-soft: #e2e8f0;
            --radius-lg: 24px;
            --radius-md: 16px;
            --shadow-card: 0 4px 24px rgba(15, 40, 70, 0.06);
            --shadow-hover: 0 12px 36px rgba(15, 40, 70, 0.12);
        }

        * {
            box-sizing: border-box;
        }

        html {
            scroll-behavior: smooth;
        }

        body {
            font-family: -apple-system, BlinkMacSystemFont, 'Segoe UI', 'PingFang SC', 'Hiragino Sans GB', 'Microsoft YaHei', sans-serif;
            background-color: var(--bg-light);
            color: var(--text-dark);
            line-height: 1.6;
        }

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

        a {
            text-decoration: none;
            color: inherit;
        }

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

        .container-page {
            max-width: 1200px;
            margin-left: auto;
            margin-right: auto;
            padding-left: 24px;
            padding-right: 24px;
        }

        .badge {
            display: inline-flex;
            align-items: center;
            gap: 6px;
            background: rgba(31, 86, 140, 0.08);
            color: var(--brand-600);
            border-radius: 999px;
            padding: 6px 16px;
            font-size: 13px;
            font-weight: 600;
            letter-spacing: 0.02em;
        }

        .badge-light {
            display: inline-flex;
            align-items: center;
            gap: 6px;
            background: rgba(255, 255, 255, 0.15);
            color: #fff;
            border: 1px solid rgba(255, 255, 255, 0.2);
            border-radius: 999px;
            padding: 6px 14px;
            font-size: 13px;
            font-weight: 600;
            backdrop-filter: blur(4px);
        }

        .badge-soft {
            display: inline-flex;
            align-items: center;
            gap: 6px;
            background: linear-gradient(135deg, rgba(31, 86, 140, 0.08), rgba(217, 181, 122, 0.12));
            color: var(--brand-600);
            border-radius: 999px;
            padding: 5px 14px;
            font-size: 12px;
            font-weight: 600;
            letter-spacing: 0.03em;
        }

        .btn-primary {
            display: inline-flex;
            align-items: center;
            justify-content: center;
            background: linear-gradient(135deg, #1f568c, #17436f);
            color: #fff;
            border-radius: 999px;
            padding: 14px 32px;
            font-size: 15px;
            font-weight: 600;
            box-shadow: 0 8px 24px rgba(31, 86, 140, 0.25);
            transition: all 0.3s ease;
            border: none;
            cursor: pointer;
            gap: 8px;
        }

        .btn-primary:hover {
            transform: translateY(-2px);
            box-shadow: 0 12px 32px rgba(31, 86, 140, 0.35);
            background: linear-gradient(135deg, #2c6ca9, #1f568c);
        }

        .btn-primary:focus-visible,
        .btn-outline:focus-visible,
        .btn-accent:focus-visible,
        .btn-light:focus-visible,
        .faq-question:focus-visible {
            outline: 3px solid rgba(31, 86, 140, 0.5);
            outline-offset: 2px;
        }

        .btn-outline {
            display: inline-flex;
            align-items: center;
            justify-content: center;
            background: transparent;
            color: #fff;
            border: 2px solid rgba(255, 255, 255, 0.6);
            border-radius: 999px;
            padding: 12px 30px;
            font-size: 15px;
            font-weight: 600;
            transition: all 0.3s ease;
            gap: 8px;
        }

        .btn-outline:hover {
            background: rgba(255, 255, 255, 0.12);
            border-color: #fff;
            transform: translateY(-2px);
        }

        .btn-accent {
            display: inline-flex;
            align-items: center;
            justify-content: center;
            background: linear-gradient(135deg, #d9b57a, #cba05c);
            color: #102f4e;
            border-radius: 999px;
            padding: 14px 32px;
            font-size: 15px;
            font-weight: 700;
            box-shadow: 0 8px 24px rgba(203, 160, 92, 0.3);
            transition: all 0.3s ease;
            border: none;
            cursor: pointer;
            gap: 8px;
        }

        .btn-accent:hover {
            transform: translateY(-2px);
            box-shadow: 0 12px 32px rgba(203, 160, 92, 0.45);
            background: linear-gradient(135deg, #e6cda1, #d9b57a);
        }

        .btn-light {
            display: inline-flex;
            align-items: center;
            justify-content: center;
            background: #fff;
            color: var(--brand-700);
            border-radius: 999px;
            padding: 12px 30px;
            font-size: 15px;
            font-weight: 600;
            box-shadow: 0 6px 20px rgba(15, 40, 70, 0.12);
            transition: all 0.3s ease;
            border: none;
            cursor: pointer;
            gap: 8px;
        }

        .btn-light:hover {
            transform: translateY(-2px);
            box-shadow: 0 10px 28px rgba(15, 40, 70, 0.18);
        }

        .section-title {
            font-size: clamp(28px, 4vw, 38px);
            font-weight: 700;
            line-height: 1.2;
            color: var(--text-dark);
            letter-spacing: -0.02em;
        }

        .section-subtitle {
            font-size: 16px;
            color: var(--text-weak);
            margin-top: 12px;
            line-height: 1.7;
        }

        .card-hover {
            transition: transform 0.3s ease, box-shadow 0.3s ease;
        }

        .card-hover:hover {
            transform: translateY(-6px);
            box-shadow: var(--shadow-hover);
        }

        .step-card {
            background: rgba(255, 255, 255, 0.08);
            border: 1px solid rgba(255, 255, 255, 0.1);
            border-radius: var(--radius-lg);
            padding: 36px 28px;
            text-align: center;
            transition: all 0.3s ease;
            backdrop-filter: blur(6px);
        }

        .step-card:hover {
            background: rgba(255, 255, 255, 0.14);
            border-color: rgba(255, 255, 255, 0.2);
            transform: translateY(-4px);
        }

        .step-number {
            font-size: 42px;
            font-weight: 800;
            color: rgba(255, 255, 255, 0.15);
            line-height: 1;
        }

        .step-icon {
            width: 56px;
            height: 56px;
            margin: -8px auto 16px;
            border-radius: 16px;
            background: linear-gradient(135deg, rgba(217, 181, 122, 0.25), rgba(217, 181, 122, 0.05));
            border: 1px solid rgba(217, 181, 122, 0.3);
            display: flex;
            align-items: center;
            justify-content: center;
            color: #d9b57a;
            font-size: 22px;
        }

        .faq-item {
            background: #fff;
            border-radius: 20px;
            border: 1px solid var(--border-soft);
            transition: all 0.3s ease;
            overflow: hidden;
        }

        .faq-item:hover {
            box-shadow: 0 8px 30px rgba(15, 40, 70, 0.08);
        }

        .faq-answer {
            color: var(--text-weak);
            line-height: 1.75;
        }

        .stat-card {
            background: rgba(255, 255, 255, 0.06);
            border: 1px solid rgba(255, 255, 255, 0.15);
            border-radius: 20px;
            padding: 16px 20px;
            text-align: center;
            backdrop-filter: blur(8px);
            transition: all 0.3s ease;
        }

        .stat-card:hover {
            background: rgba(255, 255, 255, 0.1);
            transform: translateY(-2px);
        }

        .stat-number {
            font-size: 28px;
            font-weight: 700;
            color: #fff;
            line-height: 1.2;
        }

        .stat-label {
            font-size: 13px;
            color: rgba(255, 255, 255, 0.65);
            margin-top: 4px;
        }

        .nav-link {
            position: relative;
            padding: 10px 20px;
            border-radius: 999px;
            font-size: 14px;
            font-weight: 500;
            color: #475569;
            transition: all 0.3s ease;
        }

        .nav-link:hover {
            background: rgba(31, 86, 140, 0.06);
            color: var(--brand-600);
        }

        .nav-link.active {
            background: var(--brand-600);
            color: #fff;
            box-shadow: 0 4px 12px rgba(31, 86, 140, 0.25);
        }

        .nav-link.active:hover {
            background: var(--brand-600);
            color: #fff;
        }

        .mobile-nav-link {
            display: block;
            padding: 12px 18px;
            border-radius: 14px;
            font-size: 15px;
            font-weight: 500;
            color: #334155;
            transition: all 0.2s ease;
        }

        .mobile-nav-link:hover {
            background: rgba(31, 86, 140, 0.06);
            color: var(--brand-600);
        }

        .mobile-nav-link.active {
            background: var(--brand-600);
            color: #fff;
        }

        .footer-link {
            color: #94a3b8;
            transition: color 0.2s ease;
        }

        .footer-link:hover {
            color: #f1f5f9;
        }

        .line-clamp-2 {
            display: -webkit-box;
            -webkit-line-clamp: 2;
            -webkit-box-orient: vertical;
            overflow: hidden;
        }

        .line-clamp-3 {
            display: -webkit-box;
            -webkit-line-clamp: 3;
            -webkit-box-orient: vertical;
            overflow: hidden;
        }

        @media (max-width: 768px) {
            .container-page {
                padding-left: 18px;
                padding-right: 18px;
            }

            .hero-title {
                font-size: 32px !important;
            }

            .hero-subtitle {
                font-size: 15px !important;
            }

            .stat-grid {
                grid-template-columns: repeat(2, 1fr) !important;
                gap: 10px !important;
            }

            .step-card {
                padding: 24px 18px;
            }
        }

        @media (max-width: 520px) {
            .hero-buttons {
                flex-direction: column !important;
                align-items: stretch;
            }

            .hero-buttons .btn-primary,
            .hero-buttons .btn-outline {
                width: 100%;
                justify-content: center;
            }
        }

/* roulang page: category1 */
:root {
            --brand-50: #eef6ff;
            --brand-100: #d9eaff;
            --brand-200: #b8d4fa;
            --brand-300: #8ab9f2;
            --brand-400: #5b97e8;
            --brand-500: #3778db;
            --brand-600: #2560c2;
            --brand-700: #1f4d9e;
            --brand-800: #1c3f80;
            --brand-900: #183568;
            --brand-950: #101f3d;
            --accent-400: #e8b54a;
            --accent-500: #d99e2b;
            --accent-600: #b87f1d;
            --text-default: #1e293b;
            --text-weak: #64748b;
            --border-light: #e2e8f0;
            --bg-body: #f8fafc;
            --radius-xl: 1rem;
            --radius-2xl: 1.5rem;
            --shadow-card: 0 4px 20px rgba(15, 23, 42, .06);
            --shadow-hover: 0 18px 40px rgba(15, 23, 42, .10);
        }

        html {
            scroll-behavior: smooth;
        }

        body {
            font-family: 'Inter', 'PingFang SC', 'Microsoft YaHei', 'Helvetica Neue', Arial, sans-serif;
            background-color: var(--bg-body);
            color: var(--text-default);
            line-height: 1.7;
            -webkit-font-smoothing: antialiased;
        }

        .container-page {
            max-width: 1200px;
            margin: 0 auto;
            padding-left: 1.25rem;
            padding-right: 1.25rem;
        }

        .navbar-glass {
            background: rgba(15, 23, 42, .82);
            backdrop-filter: blur(18px);
            -webkit-backdrop-filter: blur(18px);
            border: 1px solid rgba(255, 255, 255, .12);
            box-shadow: 0 8px 32px rgba(2, 6, 23, .35);
        }

        .nav-link {
            display: inline-flex;
            align-items: center;
            gap: 6px;
            padding: 9px 20px;
            border-radius: 999px;
            font-size: .875rem;
            font-weight: 500;
            color: rgba(255, 255, 255, .78);
            transition: all .25s ease;
        }

        .nav-link:hover {
            color: #fff;
            background: rgba(255, 255, 255, .09);
        }

        .nav-link.active {
            color: #fff;
            background: linear-gradient(135deg, #3778db, #1f4d9e);
            box-shadow: 0 4px 16px rgba(37, 96, 194, .35);
        }

        .footer-link {
            transition: color .2s ease;
        }

        .footer-link:hover {
            color: #fff;
        }

        .badge {
            display: inline-flex;
            align-items: center;
            gap: 6px;
            padding: 6px 16px;
            border-radius: 999px;
            font-size: .75rem;
            font-weight: 600;
            letter-spacing: .04em;
            color: #2560c2;
            background: #eef6ff;
            border: 1px solid #d9eaff;
            white-space: nowrap;
        }

        .badge-light {
            color: #e8b54a;
            background: rgba(255, 255, 255, .08);
            border: 1px solid rgba(255, 255, 255, .16);
        }

        .card-hover {
            transition: transform .3s ease, box-shadow .3s ease;
        }

        .card-hover:hover {
            transform: translateY(-6px);
            box-shadow: var(--shadow-hover);
        }

        .btn-primary {
            display: inline-flex;
            align-items: center;
            gap: 8px;
            padding: 12px 28px;
            border-radius: 999px;
            background: linear-gradient(135deg, #3778db, #1f4d9e);
            color: #fff;
            font-weight: 600;
            font-size: .925rem;
            box-shadow: 0 8px 24px rgba(37, 96, 194, .28);
            transition: all .25s ease;
            border: none;
            cursor: pointer;
        }

        .btn-primary:hover {
            transform: translateY(-2px);
            box-shadow: 0 12px 30px rgba(37, 96, 194, .38);
        }

        .btn-outline {
            display: inline-flex;
            align-items: center;
            gap: 8px;
            padding: 12px 28px;
            border-radius: 999px;
            background: rgba(255, 255, 255, .10);
            border: 1px solid rgba(255, 255, 255, .22);
            color: #fff;
            font-weight: 600;
            font-size: .925rem;
            backdrop-filter: blur(6px);
            -webkit-backdrop-filter: blur(6px);
            transition: all .25s ease;
            cursor: pointer;
            text-decoration: none;
        }

        .btn-outline:hover {
            background: rgba(255, 255, 255, .18);
            border-color: rgba(255, 255, 255, .35);
            color: #fff;
        }

        .btn-white {
            display: inline-flex;
            align-items: center;
            gap: 8px;
            padding: 12px 28px;
            border-radius: 999px;
            background: #fff;
            color: #1f4d9e;
            font-weight: 600;
            font-size: .925rem;
            box-shadow: 0 8px 24px rgba(15, 23, 42, .12);
            transition: all .25s ease;
            border: none;
            cursor: pointer;
            text-decoration: none;
        }

        .btn-white:hover {
            transform: translateY(-2px);
            box-shadow: 0 12px 30px rgba(15, 23, 42, .18);
            color: #183568;
        }

        .faq-item {
            background: #fff;
            border: 1px solid #e2e8f0;
            border-radius: 1rem;
            padding: 1.25rem 1.5rem;
            transition: border-color .2s ease, box-shadow .2s ease;
        }

        .faq-item:hover {
            border-color: #b8d4fa;
        }

        .faq-item[open] {
            border-color: #8ab9f2;
            box-shadow: 0 8px 24px rgba(37, 96, 194, .06);
        }

        .faq-item summary {
            cursor: pointer;
            font-weight: 600;
            color: #1e293b;
            font-size: 1rem;
            list-style: none;
            display: flex;
            align-items: center;
            gap: 12px;
        }

        .faq-item summary::-webkit-details-marker {
            display: none;
        }

        .faq-item summary i {
            color: #2560c2;
            transition: transform .25s ease;
        }

        .faq-item[open] summary i {
            transform: rotate(45deg);
        }

        .step-dot {
            width: 56px;
            height: 56px;
            border-radius: 1rem;
            background: linear-gradient(135deg, #3778db, #1f4d9e);
            display: flex;
            align-items: center;
            justify-content: center;
            color: #fff;
            font-size: 1.25rem;
            font-weight: 700;
            box-shadow: 0 8px 20px rgba(37, 96, 194, .25);
            flex-shrink: 0;
        }

        .stat-card {
            background: rgba(255, 255, 255, .06);
            border: 1px solid rgba(255, 255, 255, .10);
            border-radius: 1.25rem;
            padding: 2rem 1.5rem;
            text-align: center;
            backdrop-filter: blur(6px);
            -webkit-backdrop-filter: blur(6px);
            transition: transform .3s ease, border-color .3s ease;
        }

        .stat-card:hover {
            transform: translateY(-4px);
            border-color: rgba(232, 181, 74, .30);
        }

        a:focus-visible,
        button:focus-visible,
        summary:focus-visible,
        input:focus-visible {
            outline: 3px solid #8ab9f2;
            outline-offset: 2px;
            border-radius: 6px;
        }

        @media (max-width: 640px) {
            .container-page {
                padding-left: 1rem;
                padding-right: 1rem;
            }
            .btn-primary,
            .btn-outline,
            .btn-white {
                padding: 10px 22px;
                font-size: .875rem;
            }
            .step-dot {
                width: 48px;
                height: 48px;
                font-size: 1rem;
            }
        }

/* roulang page: article */
:root {
    --brand-50: #f0f7ff;
    --brand-100: #e0effe;
    --brand-500: #0e82e8;
    --brand-600: #0568c4;
    --brand-700: #07539f;
    --brand-800: #0b4784;
    --brand-900: #0f3c6e;
    --brand-950: #0a2547;
    --accent-400: #fbbf24;
    --accent-500: #f59e0b;
    --accent-600: #d97706;
    --text-900: #0f172a;
    --text-700: #334155;
    --text-500: #64748b;
    --text-400: #94a3b8;
    --bg-page: #f8fafc;
    --bg-card: #ffffff;
    --border-light: #e2e8f0;
    --radius-sm: 8px;
    --radius-md: 12px;
    --radius-lg: 20px;
    --radius-xl: 28px;
    --shadow-sm: 0 2px 8px rgba(15, 60, 110, 0.06);
    --shadow-md: 0 8px 24px rgba(15, 60, 110, 0.08);
    --shadow-lg: 0 16px 48px rgba(15, 60, 110, 0.12);
}

* {
    box-sizing: border-box;
    margin: 0;
    padding: 0;
}

html {
    scroll-behavior: smooth;
}

body {
    font-family: 'Inter', 'PingFang SC', 'Microsoft YaHei', system-ui, sans-serif;
    background: var(--bg-page);
    color: var(--text-700);
    line-height: 1.7;
    -webkit-font-smoothing: antialiased;
}

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

a {
    text-decoration: none;
    color: inherit;
    transition: color 0.2s ease;
}

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

.container-page {
    max-width: 1200px;
    margin: 0 auto;
    padding: 0 24px;
}

/* ===== Header / Nav ===== */
.site-header {
    position: fixed;
    top: 0;
    left: 0;
    right: 0;
    z-index: 100;
    padding: 16px 20px;
    pointer-events: none;
}

.nav-capsule {
    max-width: 1200px;
    margin: 0 auto;
    pointer-events: auto;
    display: flex;
    align-items: center;
    justify-content: space-between;
    gap: 12px;
    background: rgba(255, 255, 255, 0.92);
    backdrop-filter: blur(18px);
    -webkit-backdrop-filter: blur(18px);
    border-radius: 999px;
    padding: 10px 16px 10px 20px;
    box-shadow: 0 8px 32px rgba(15, 60, 110, 0.12);
    border: 1px solid rgba(255, 255, 255, 0.7);
}

.nav-logo {
    width: 36px;
    height: 36px;
    border-radius: 50%;
    background: linear-gradient(135deg, var(--brand-500), var(--brand-800));
    display: flex;
    align-items: center;
    justify-content: center;
    color: #fff;
    font-size: 14px;
    font-weight: 700;
    box-shadow: 0 4px 12px rgba(14, 130, 232, 0.3);
    flex-shrink: 0;
}

.nav-title {
    font-size: 18px;
    font-weight: 700;
    color: var(--brand-950);
    white-space: nowrap;
    letter-spacing: 0.02em;
}

.nav-link {
    padding: 8px 18px;
    border-radius: 999px;
    font-size: 14px;
    font-weight: 500;
    color: var(--text-500);
    transition: all 0.25s ease;
}

.nav-link:hover {
    color: var(--brand-600);
    background: var(--brand-50);
}

.nav-link.active {
    color: #fff;
    background: linear-gradient(135deg, var(--brand-500), var(--brand-700));
    box-shadow: 0 4px 14px rgba(14, 130, 232, 0.3);
}

.nav-help {
    display: inline-flex;
    align-items: center;
    gap: 6px;
    padding: 8px 16px;
    border-radius: 999px;
    font-size: 13px;
    font-weight: 500;
    color: var(--text-500);
    background: var(--bg-page);
    border: 1px solid var(--border-light);
    transition: all 0.25s ease;
}

.nav-help:hover {
    color: var(--brand-600);
    border-color: var(--brand-500);
    background: var(--brand-50);
}

.nav-toggle {
    display: flex;
    flex-direction: column;
    justify-content: center;
    gap: 5px;
    width: 40px;
    height: 40px;
    border-radius: 12px;
    background: var(--bg-page);
    border: 1px solid var(--border-light);
    align-items: center;
    transition: all 0.2s ease;
}

.nav-toggle span {
    display: block;
    width: 18px;
    height: 2px;
    background: var(--brand-900);
    border-radius: 2px;
    transition: all 0.3s ease;
}

.nav-toggle.active span:nth-child(1) {
    transform: translateY(7px) rotate(45deg);
}

.nav-toggle.active span:nth-child(2) {
    opacity: 0;
}

.nav-toggle.active span:nth-child(3) {
    transform: translateY(-7px) rotate(-45deg);
}

.mobile-nav {
    position: fixed;
    top: 80px;
    left: 20px;
    right: 20px;
    max-width: 1200px;
    margin: 0 auto;
    background: rgba(255, 255, 255, 0.98);
    backdrop-filter: blur(18px);
    border-radius: 20px;
    box-shadow: 0 16px 48px rgba(15, 60, 110, 0.15);
    padding: 14px;
    display: flex;
    flex-direction: column;
    gap: 6px;
    opacity: 0;
    visibility: hidden;
    transform: translateY(-12px);
    transition: all 0.3s ease;
    z-index: 99;
}

.mobile-nav.open {
    opacity: 1;
    visibility: visible;
    transform: translateY(0);
}

.mobile-nav-link {
    display: flex;
    align-items: center;
    gap: 10px;
    padding: 12px 16px;
    border-radius: 14px;
    font-size: 15px;
    font-weight: 500;
    color: var(--text-700);
    background: var(--bg-page);
    transition: all 0.2s ease;
}

.mobile-nav-link:hover,
.mobile-nav-link.active {
    color: var(--brand-600);
    background: var(--brand-50);
}

/* ===== Buttons ===== */
.btn-primary {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    gap: 8px;
    padding: 12px 28px;
    border-radius: 999px;
    font-size: 14px;
    font-weight: 600;
    color: #fff;
    background: linear-gradient(135deg, var(--brand-500), var(--brand-700));
    box-shadow: 0 6px 20px rgba(14, 130, 232, 0.3);
    transition: all 0.25s ease;
    border: none;
}

.btn-primary:hover {
    transform: translateY(-2px);
    box-shadow: 0 10px 28px rgba(14, 130, 232, 0.35);
    color: #fff;
}

.btn-primary:active {
    transform: translateY(0);
    box-shadow: 0 4px 14px rgba(14, 130, 232, 0.3);
}

.btn-secondary {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    gap: 8px;
    padding: 12px 28px;
    border-radius: 999px;
    font-size: 14px;
    font-weight: 600;
    color: var(--brand-700);
    background: #fff;
    border: 1.5px solid var(--border-light);
    transition: all 0.25s ease;
}

.btn-secondary:hover {
    border-color: var(--brand-500);
    color: var(--brand-600);
    background: var(--brand-50);
    transform: translateY(-2px);
}

/* ===== Hero ===== */
.page-hero {
    position: relative;
    padding: 160px 0 90px;
    background-size: cover;
    background-position: center;
    background-repeat: no-repeat;
}

.hero-overlay {
    position: absolute;
    inset: 0;
    background: linear-gradient(135deg, rgba(10, 37, 71, 0.94), rgba(14, 130, 232, 0.72));
}

.hero-content {
    position: relative;
    z-index: 2;
    max-width: 860px;
}

.hero-breadcrumb {
    display: inline-flex;
    align-items: center;
    gap: 8px;
    padding: 6px 16px;
    border-radius: 999px;
    background: rgba(255, 255, 255, 0.16);
    border: 1px solid rgba(255, 255, 255, 0.24);
    color: rgba(255, 255, 255, 0.85);
    font-size: 13px;
    font-weight: 500;
    backdrop-filter: blur(8px);
    margin-bottom: 24px;
}

.hero-breadcrumb a:hover {
    color: #fff;
}

.page-hero h1 {
    font-size: clamp(1.75rem, 4vw, 2.75rem);
    font-weight: 800;
    color: #fff;
    line-height: 1.3;
    letter-spacing: -0.02em;
    margin-bottom: 16px;
}

.page-hero .hero-desc {
    font-size: 1.0625rem;
    line-height: 1.75;
    color: rgba(255, 255, 255, 0.82);
    max-width: 680px;
    margin-bottom: 24px;
}

.hero-meta {
    display: flex;
    flex-wrap: wrap;
    gap: 16px;
    align-items: center;
    color: rgba(255, 255, 255, 0.75);
    font-size: 14px;
}

.hero-meta span {
    display: inline-flex;
    align-items: center;
    gap: 8px;
}

.hero-meta .divider-dot {
    width: 4px;
    height: 4px;
    border-radius: 50%;
    background: rgba(255, 255, 255, 0.5);
}

/* ===== Article Main ===== */
.article-main-section {
    padding: 80px 0;
    background: var(--bg-page);
}

.article-card {
    background: var(--bg-card);
    border-radius: var(--radius-xl);
    box-shadow: var(--shadow-md);
    padding: 48px;
    border: 1px solid rgba(255, 255, 255, 0.8);
}

.article-body {
    font-size: 1.0625rem;
    line-height: 1.9;
    color: var(--text-700);
}

.article-body p {
    margin-bottom: 1.4em;
}

.article-body h2 {
    font-size: 1.5rem;
    font-weight: 700;
    color: var(--brand-900);
    margin: 1.8em 0 0.8em;
    line-height: 1.4;
    padding-top: 0.6em;
}

.article-body h3 {
    font-size: 1.25rem;
    font-weight: 600;
    color: var(--brand-800);
    margin: 1.5em 0 0.6em;
    line-height: 1.4;
}

.article-body ul,
.article-body ol {
    margin: 1em 0 1.5em;
    padding-left: 1.6em;
}

.article-body ul li {
    list-style: disc;
    margin-bottom: 0.5em;
}

.article-body ol li {
    list-style: decimal;
    margin-bottom: 0.5em;
}

.article-body blockquote {
    border-left: 4px solid var(--brand-500);
    background: var(--brand-50);
    padding: 18px 24px;
    border-radius: 0 16px 16px 0;
    margin: 1.8em 0;
    color: var(--brand-900);
    font-style: normal;
}

.article-body img {
    border-radius: 16px;
    box-shadow: var(--shadow-md);
    margin: 1.8em 0;
}

.article-body a {
    color: var(--brand-600);
    text-decoration: underline;
    text-underline-offset: 3px;
    font-weight: 500;
}

.article-body a:hover {
    color: var(--brand-800);
}

.article-body table {
    width: 100%;
    border-collapse: collapse;
    margin: 1.8em 0;
}

.article-body th,
.article-body td {
    border: 1px solid var(--border-light);
    padding: 12px 16px;
    text-align: left;
}

.article-body th {
    background: var(--brand-50);
    color: var(--brand-900);
    font-weight: 600;
}

.not-found-box {
    text-align: center;
    padding: 60px 24px;
}

.not-found-box i {
    font-size: 48px;
    color: var(--brand-400);
    margin-bottom: 20px;
}

.not-found-box h2 {
    font-size: 1.75rem;
    color: var(--brand-900);
    margin-bottom: 12px;
}

.not-found-box p {
    color: var(--text-500);
    margin-bottom: 28px;
}

/* ===== Sidebar ===== */
.sidebar-card {
    background: var(--bg-card);
    border-radius: var(--radius-lg);
    box-shadow: var(--shadow-sm);
    padding: 28px;
    border: 1px solid rgba(255, 255, 255, 0.8);
    margin-bottom: 20px;
}

.sidebar-card-title {
    display: flex;
    align-items: center;
    gap: 10px;
    font-size: 16px;
    font-weight: 700;
    color: var(--brand-950);
    margin-bottom: 20px;
}

.sidebar-card-title i {
    color: var(--brand-500);
}

.sidebar-meta-list {
    display: flex;
    flex-direction: column;
    gap: 14px;
}

.sidebar-meta-item {
    display: flex;
    align-items: flex-start;
    gap: 12px;
    font-size: 14px;
    color: var(--text-500);
}

.sidebar-meta-item i {
    color: var(--brand-500);
    margin-top: 4px;
    width: 16px;
    text-align: center;
}

.sidebar-meta-item strong {
    color: var(--text-700);
    font-weight: 600;
    display: block;
}

.tag-list {
    display: flex;
    flex-wrap: wrap;
    gap: 8px;
}

.tag-item {
    display: inline-block;
    padding: 6px 14px;
    border-radius: 999px;
    font-size: 13px;
    font-weight: 500;
    color: var(--brand-600);
    background: var(--brand-50);
    border: 1px solid rgba(14, 130, 232, 0.15);
    transition: all 0.2s ease;
}

.tag-item:hover {
    background: var(--brand-500);
    color: #fff;
    border-color: var(--brand-500);
}

.sidebar-nav-list {
    display: flex;
    flex-direction: column;
    gap: 6px;
}

.sidebar-nav-link {
    display: flex;
    align-items: center;
    gap: 10px;
    padding: 10px 14px;
    border-radius: 12px;
    font-size: 14px;
    color: var(--text-500);
    background: var(--bg-page);
    transition: all 0.2s ease;
}

.sidebar-nav-link:hover {
    color: var(--brand-600);
    background: var(--brand-50);
}

/* ===== Content Guide ===== */
.content-guide {
    padding: 90px 0;
    background: #fff;
    position: relative;
}

.section-head {
    text-align: center;
    max-width: 640px;
    margin: 0 auto 60px;
}

.section-tag {
    display: inline-block;
    padding: 6px 16px;
    border-radius: 999px;
    font-size: 13px;
    font-weight: 600;
    color: var(--brand-600);
    background: var(--brand-50);
    border: 1px solid rgba(14, 130, 232, 0.15);
    margin-bottom: 16px;
}

.section-head h2 {
    font-size: clamp(1.6rem, 3vw, 2.2rem);
    font-weight: 800;
    color: var(--brand-950);
    line-height: 1.35;
    margin-bottom: 14px;
    letter-spacing: -0.01em;
}

.section-head p {
    color: var(--text-500);
    font-size: 1rem;
    line-height: 1.7;
}

.guide-card {
    background: var(--bg-page);
    border-radius: var(--radius-lg);
    padding: 20px;
    border: 1px solid var(--border-light);
    transition: all 0.3s ease;
    height: 100%;
    display: flex;
    flex-direction: column;
}

.guide-card:hover {
    transform: translateY(-6px);
    box-shadow: var(--shadow-lg);
    border-color: rgba(14, 130, 232, 0.28);
}

.guide-card-img {
    border-radius: 14px;
    overflow: hidden;
    margin-bottom: 20px;
    aspect-ratio: 16 / 10;
    background: var(--brand-50);
}

.guide-card-img img {
    width: 100%;
    height: 100%;
    object-fit: cover;
    transition: transform 0.4s ease;
}

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

.guide-card h3 {
    font-size: 17px;
    font-weight: 700;
    color: var(--brand-950);
    margin-bottom: 10px;
}

.guide-card p {
    font-size: 14px;
    color: var(--text-500);
    line-height: 1.65;
    margin-bottom: 20px;
    flex-grow: 1;
}

.guide-card a {
    color: var(--brand-500);
    font-size: 14px;
    font-weight: 600;
    display: inline-flex;
    align-items: center;
    gap: 6px;
    transition: gap 0.2s ease;
}

.guide-card a:hover {
    gap: 10px;
    color: var(--brand-700);
}

/* ===== Service Stats ===== */
.service-stats {
    padding: 90px 0;
    background: linear-gradient(180deg, #f8fafc 0%, #f0f7ff 100%);
}

.stat-card {
    background: #fff;
    border-radius: var(--radius-lg);
    padding: 36px 28px;
    text-align: center;
    border: 1px solid rgba(255, 255, 255, 0.9);
    box-shadow: var(--shadow-sm);
    transition: all 0.3s ease;
}

.stat-card:hover {
    transform: translateY(-4px);
    box-shadow: var(--shadow-md);
    border-color: rgba(14, 130, 232, 0.2);
}

.stat-card i {
    font-size: 28px;
    color: var(--brand-500);
    margin-bottom: 18px;
    display: block;
}

.stat-num {
    font-size: 2.2rem;
    font-weight: 800;
    color: var(--brand-950);
    line-height: 1.2;
    margin-bottom: 6px;
}

.stat-label {
    font-size: 14px;
    color: var(--text-500);
}

/* ===== CTA ===== */
.cta-section {
    position: relative;
    padding: 100px 0;
    background-size: cover;
    background-position: center;
    display: flex;
    align-items: center;
}

.cta-overlay {
    position: absolute;
    inset: 0;
    background: linear-gradient(135deg, rgba(10, 37, 71, 0.92), rgba(14, 130, 232, 0.78));
}

.cta-content {
    position: relative;
    z-index: 2;
    text-align: center;
    max-width: 720px;
    margin: 0 auto;
}

.cta-content h2 {
    font-size: clamp(1.7rem, 3.2vw, 2.4rem);
    font-weight: 800;
    color: #fff;
    line-height: 1.35;
    margin-bottom: 18px;
}

.cta-content p {
    font-size: 1.0625rem;
    color: rgba(255, 255, 255, 0.85);
    line-height: 1.75;
    margin-bottom: 36px;
}

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

.btn-cta {
    display: inline-flex;
    align-items: center;
    gap: 8px;
    padding: 14px 34px;
    border-radius: 999px;
    font-size: 15px;
    font-weight: 600;
    color: var(--brand-950);
    background: #fff;
    box-shadow: 0 8px 28px rgba(0, 0, 0, 0.2);
    transition: all 0.25s ease;
}

.btn-cta:hover {
    transform: translateY(-2px);
    box-shadow: 0 14px 36px rgba(0, 0, 0, 0.25);
    color: var(--brand-700);
}

.btn-cta-outline {
    display: inline-flex;
    align-items: center;
    gap: 8px;
    padding: 14px 34px;
    border-radius: 999px;
    font-size: 15px;
    font-weight: 600;
    color: #fff;
    background: rgba(255, 255, 255, 0.12);
    border: 1.5px solid rgba(255, 255, 255, 0.4);
    backdrop-filter: blur(8px);
    transition: all 0.25s ease;
}

.btn-cta-outline:hover {
    background: rgba(255, 255, 255, 0.2);
    border-color: rgba(255, 255, 255, 0.7);
    color: #fff;
}

/* ===== FAQ ===== */
.faq-section {
    padding: 90px 0;
    background: var(--bg-page);
}

.faq-item {
    background: #fff;
    border-radius: 18px;
    border: 1px solid var(--border-light);
    box-shadow: var(--shadow-sm);
    margin-bottom: 14px;
    overflow: hidden;
    transition: all 0.25s ease;
}

.faq-item:hover {
    border-color: rgba(14, 130, 232, 0.28);
    box-shadow: var(--shadow-md);
}

.faq-item details {
    width: 100%;
}

.faq-item summary {
    display: flex;
    align-items: center;
    justify-content: space-between;
    gap: 16px;
    padding: 22px 28px;
    cursor: pointer;
    list-style: none;
    font-size: 16px;
    font-weight: 600;
    color: var(--brand-950);
    transition: color 0.2s ease;
}

.faq-item summary::-webkit-details-marker {
    display: none;
}

.faq-item summary i {
    color: var(--brand-500);
    font-size: 16px;
    transition: transform 0.3s ease;
    flex-shrink: 0;
}

.faq-item details[open] summary {
    color: var(--brand-600);
}

.faq-item details[open] summary i {
    transform: rotate(180deg);
}

.faq-answer {
    padding: 0 28px 24px;
    color: var(--text-500);
    font-size: 14.5px;
    line-height: 1.75;
    border-top: 1px solid var(--border-light);
    padding-top: 18px;
}

.faq-answer a {
    color: var(--brand-500);
    font-weight: 500;
    text-decoration: underline;
    text-underline-offset: 3px;
}

/* ===== Footer ===== */
.footer-link {
    color: #64748b;
    transition: color 0.2s ease;
}

.footer-link:hover {
    color: #fbbf24;
}

/* ===== Responsive ===== */
@media (max-width: 1024px) {
    .page-hero {
        padding: 140px 0 70px;
    }
    .article-main-section,
    .content-guide,
    .service-stats,
    .faq-section {
        padding: 70px 0;
    }
    .cta-section {
        padding: 80px 0;
    }
    .article-card {
        padding: 36px;
    }
}

@media (max-width: 768px) {
    .nav-title {
        font-size: 16px;
    }
    .site-header {
        padding: 12px 14px;
    }
    .nav-capsule {
        padding: 8px 12px 8px 14px;
    }
    .page-hero {
        padding: 120px 0 56px;
    }
    .page-hero h1 {
        font-size: 1.65rem;
    }
    .hero-desc {
        font-size: 0.95rem;
    }
    .article-card {
        padding: 24px 20px;
        border-radius: 20px;
    }
    .article-body {
        font-size: 0.98rem;
    }
    .article-main-section {
        padding-top: 48px;
    }
    .content-guide {
        padding: 60px 0;
    }
    .section-head {
        margin-bottom: 40px;
    }
    .section-head h2 {
        font-size: 1.55rem;
    }
    .guide-card {
        padding: 16px;
    }
    .stat-card {
        padding: 24px 18px;
    }
    .stat-num {
        font-size: 1.7rem;
    }
    .cta-content h2 {
        font-size: 1.55rem;
    }
    .faq-item summary {
        padding: 18px 20px;
        font-size: 15px;
    }
    .faq-answer {
        padding: 0 20px 18px;
        padding-top: 14px;
    }
    .btn-cta,
    .btn-cta-outline {
        padding: 12px 26px;
        font-size: 14px;
    }
    .hero-meta {
        gap: 10px;
        font-size: 13px;
    }
}

@media (max-width: 520px) {
    .container-page {
        padding: 0 16px;
    }
    .page-hero {
        padding: 108px 0 48px;
    }
    .nav-help {
        display: none !important;
    }
    .stat-card {
        padding: 18px 12px;
    }
    .stat-num {
        font-size: 1.4rem;
    }
    .guide-card h3 {
        font-size: 15px;
    }
    .cta-buttons {
        flex-direction: column;
        align-items: center;
    }
    .btn-cta,
    .btn-cta-outline {
        width: 100%;
        justify-content: center;
    }
    .faq-item summary {
        font-size: 14px;
        padding: 16px;
    }
    .faq-answer {
        font-size: 13.5px;
        padding: 0 16px 16px;
        padding-top: 12px;
    }
    .hero-breadcrumb {
        font-size: 12px;
        padding: 5px 12px;
    }
    .article-card {
        padding: 18px 16px;
    }
    .sidebar-card {
        padding: 20px;
    }
}