/* roulang page: index */
:root {
            --primary: #3b4fd9;
            --primary-light: #4f6bff;
            --secondary: #7c3aed;
            --accent: #e06a12;
            --bg: #f8fafc;
            --text: #334155;
            --text-light: #64748b;
            --border: #e2e8f0;
        }
        * { box-sizing: border-box; }
        body {
            font-family: 'PingFang SC', 'Microsoft YaHei', 'Hiragino Sans GB', 'Noto Sans SC', sans-serif;
            background-color: var(--bg);
            color: var(--text);
            line-height: 1.7;
            -webkit-font-smoothing: antialiased;
        }
        .container { max-width: 1200px; margin: 0 auto; padding: 0 24px; }
        .site-header {
            background: rgba(255,255,255,0.95);
            backdrop-filter: blur(12px);
            border-bottom: 1px solid rgba(226,232,240,0.8);
            position: sticky;
            top: 0;
            z-index: 50;
            transition: all .3s ease;
        }
        .site-header .nav-link {
            position: relative;
            font-size: 15px;
            color: #475569;
            padding: 8px 16px;
            border-radius: 10px;
            transition: all .25s ease;
            font-weight: 500;
        }
        .site-header .nav-link:hover { color: var(--primary); background: #f8faff; }
        .site-header .nav-link.active { color: var(--primary); background: #eef2ff; font-weight: 600; }
        .hero-section {
            background-image: url('/assets/images/backpic/back-1.png');
            background-size: cover;
            background-position: center;
            position: relative;
            overflow: hidden;
        }
        .hero-section::before {
            content: '';
            position: absolute;
            inset: 0;
            background: linear-gradient(135deg, rgba(15,23,42,0.82), rgba(79,70,229,0.55), rgba(124,58,237,0.35));
        }
        .hero-section .hero-content { position: relative; z-index: 2; }
        .result-card {
            transition: all .3s ease;
            border: 1px solid rgba(226,232,240,0.7);
            box-shadow: 0 8px 30px rgba(58,55,148,0.06);
        }
        .result-card:hover {
            transform: translateY(-6px);
            box-shadow: 0 16px 40px rgba(58,55,148,0.14);
            border-color: #c7d2fe;
        }
        .badge {
            display: inline-flex;
            align-items: center;
            gap: 4px;
            font-size: 12px;
            font-weight: 500;
            padding: 3px 10px;
            border-radius: 999px;
            background: #eef2ff;
            color: var(--primary);
            border: 1px solid #dbeafe;
        }
        .stat-wrap {
            text-align: center;
            padding: 24px 16px;
            border-radius: 16px;
            background: rgba(255,255,255,0.15);
            border: 1px solid rgba(255,255,255,0.2);
            backdrop-filter: blur(8px);
        }
        .btn-primary {
            background: linear-gradient(135deg, var(--primary-light), var(--primary));
            color: #fff;
            border: none;
            border-radius: 12px;
            padding: 14px 32px;
            font-size: 15px;
            font-weight: 600;
            transition: all .3s ease;
            box-shadow: 0 8px 24px rgba(59,119,217,0.3);
        }
        .btn-primary:hover { transform: translateY(-2px); box-shadow: 0 12px 30px rgba(59,119,217,0.4); }
        .btn-outline {
            background: transparent;
            border: 1px solid rgba(255,255,255,0.7);
            color: #fff;
            border-radius: 12px;
            padding: 14px 32px;
            font-size: 15px;
            font-weight: 500;
            transition: all .3s ease;
        }
        .btn-outline:hover { background: rgba(255,255,255,0.15); border-color: #fff; }
        .faq-item {
            border: 1px solid var(--border);
            border-radius: 14px;
            overflow: hidden;
            transition: all .3s ease;
            background: #fff;
        }
        .faq-item:hover { border-color: #c7d2fe; box-shadow: 0 6px 20px rgba(58,55,148,0.06); }
        .timeline-dot {
            background: linear-gradient(135deg, var(--primary-light), var(--secondary));
            box-shadow: 0 0 0 4px rgba(124,58,237,0.1);
        }
        .card-img-mask { position: relative; overflow: hidden; }
        .card-img-mask img { transition: transform .5s ease; }
        .card-img-mask:hover img { transform: scale(1.05); }
        a:focus-visible, button:focus-visible, input:focus-visible {
            outline: 3px solid rgba(79,107,255,0.4);
            outline-offset: 2px;
            border-radius: 8px;
        }
        .search-input { background: #f1f5f9; border: 1px solid transparent; transition: all .3s ease; }
        .search-input:focus { background: #fff; border-color: var(--primary-light); box-shadow: 0 0 0 4px rgba(79,107,255,0.12); }
        .gradient-text {
            background: linear-gradient(135deg, #818cf8, #a78bfa, #c084fc);
            -webkit-background-clip: text;
            -webkit-text-fill-color: transparent;
            background-clip: text;
        }
        .faq-answer { max-height: 0; overflow: hidden; transition: max-height .35s ease, padding .35s ease; padding: 0 20px; }
        .faq-item.active .faq-answer { max-height: 500px; padding: 20px; }
        .faq-item.active .faq-icon { transform: rotate(45deg); }
        .faq-icon { transition: transform .3s ease; }
        .nav-mobile-panel {
            position: absolute;
            top: 100%;
            left: 0;
            right: 0;
            background: #fff;
            border-bottom: 1px solid var(--border);
            padding: 16px 20px;
            box-shadow: 0 16px 40px rgba(58,55,148,0.08);
            z-index: 40;
            display: none;
        }
        .nav-mobile-panel.open { display: block; }
        .nav-mobile-panel a {
            display: block;
            padding: 12px 16px;
            border-radius: 10px;
            font-size: 15px;
            color: #334155;
            font-weight: 500;
        }
        .nav-mobile-panel a:hover { background: #f8faff; color: var(--primary); }
        .nav-mobile-panel a.active { color: var(--primary); background: #eef2ff; }
        .mobile-menu-btn {
            display: none;
            width: 40px;
            height: 40px;
            align-items: center;
            justify-content: center;
            border-radius: 10px;
            border: 1px solid var(--border);
            background: #fff;
            cursor: pointer;
            transition: all .2s ease;
        }
        .mobile-menu-btn:hover { background: #f8faff; border-color: #c7d2fe; }
        @media (max-width: 768px) {
            .container { padding: 0 16px; }
            .nav-desktop { display: none; }
            .mobile-menu-btn { display: flex; }
            .hero-title { font-size: 2rem !important; }
            .hero-subtitle { font-size: 1rem !important; }
        }
        @media (min-width: 769px) {
            .nav-mobile-panel { display: none !important; }
        }
        .line-clamp-2 {
            display: -webkit-box;
            -webkit-line-clamp: 2;
            -webkit-box-orient: vertical;
            overflow: hidden;
        }
        .section-title {
            font-size: 2rem;
            font-weight: 700;
            color: #1e293b;
            letter-spacing: -0.02em;
        }
        @media (max-width: 520px) {
            .section-title { font-size: 1.5rem; }
            .btn-primary, .btn-outline { padding: 12px 24px; font-size: 14px; }
        }

/* roulang page: category1 */
:root {
        --color-primary: #8b5cf6;
        --color-primary-dark: #7c3aed;
        --color-secondary: #4f46e5;
        --color-bg-light: #f8fafc;
        --color-text-dark: #0f172a;
        --color-text-muted: #64748b;
        --color-border-light: #e2e8f0;
        --radius-md: 0.75rem;
        --radius-lg: 1rem;
        --shadow-card: 0 4px 24px rgba(15, 23, 42, 0.06);
        --shadow-hover: 0 12px 40px rgba(124, 58, 237, 0.12);
        --transition-base: all 0.25s ease;
    }

    * {
        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;
        line-height: 1.7;
        color: #0f172a;
        background: #ffffff;
        -webkit-font-smoothing: antialiased;
    }

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

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

    button, input {
        font-family: inherit;
    }

    .gradient-text {
        background: linear-gradient(135deg, #8b5cf6 0%, #4f46e5 100%);
        -webkit-background-clip: text;
        -webkit-text-fill-color: transparent;
        background-clip: text;
        font-weight: 700;
    }

    .container {
        width: 100%;
        max-width: 1200px;
        margin: 0 auto;
        padding-left: 1.5rem;
        padding-right: 1.5rem;
    }

    /* Header */
    .site-header {
        background: rgba(255, 255, 255, 0.95);
        backdrop-filter: blur(8px);
        border-bottom: 1px solid rgba(226, 232, 240, 0.8);
        position: sticky;
        top: 0;
        z-index: 100;
    }

    .nav-desktop .nav-link {
        padding: 0.45rem 1rem;
        font-size: 0.9rem;
        font-weight: 500;
        color: #64748b;
        border-radius: 9999px;
        transition: var(--transition-base);
    }

    .nav-desktop .nav-link:hover {
        color: #7c3aed;
        background: #f5f3ff;
    }

    .nav-desktop .nav-link.active {
        color: #7c3aed;
        background: #f5f3ff;
        font-weight: 600;
    }

    .search-input {
        border: 1.5px solid #e2e8f0;
        background: #f8fafc;
        transition: var(--transition-base);
        font-size: 0.875rem;
    }

    .search-input:focus {
        outline: none;
        border-color: #8b5cf6;
        background: #ffffff;
        box-shadow: 0 0 0 4px rgba(139, 92, 246, 0.1);
    }

    .btn-primary {
        display: inline-flex;
        align-items: center;
        justify-content: center;
        background: linear-gradient(135deg, #8b5cf6 0%, #4f46e5 100%);
        color: #ffffff;
        font-weight: 600;
        border-radius: 9999px;
        padding: 0.65rem 1.4rem;
        font-size: 0.9rem;
        transition: var(--transition-base);
        box-shadow: 0 4px 14px rgba(124, 58, 237, 0.25);
        gap: 0.4rem;
    }

    .btn-primary:hover {
        transform: translateY(-2px);
        box-shadow: 0 8px 24px rgba(124, 58, 237, 0.35);
    }

    .btn-primary:active {
        transform: translateY(0);
        box-shadow: 0 2px 8px rgba(124, 58, 237, 0.3);
    }

    .btn-outline {
        display: inline-flex;
        align-items: center;
        justify-content: center;
        border: 1.5px solid #c4b5fd;
        color: #7c3aed;
        background: transparent;
        font-weight: 600;
        border-radius: 9999px;
        padding: 0.65rem 1.4rem;
        font-size: 0.9rem;
        transition: var(--transition-base);
        gap: 0.4rem;
    }

    .btn-outline:hover {
        background: #f5f3ff;
        border-color: #8b5cf6;
        transform: translateY(-2px);
    }

    .mobile-menu-btn {
        display: none;
        background: transparent;
        border: none;
        padding: 0.5rem;
        cursor: pointer;
    }

    .mobile-menu-btn:focus-visible {
        outline: 2px solid #8b5cf6;
        outline-offset: 2px;
        border-radius: 0.5rem;
    }

    .nav-mobile-panel {
        display: none;
        padding: 0.5rem 1.5rem 1.25rem;
        border-top: 1px solid #f1f5f9;
        background: #ffffff;
    }

    .nav-mobile-panel.open {
        display: flex;
        flex-direction: column;
        gap: 0.25rem;
    }

    .nav-mobile-panel a {
        padding: 0.65rem 1rem;
        border-radius: 0.6rem;
        font-size: 0.9rem;
        font-weight: 500;
        color: #475569;
        transition: var(--transition-base);
    }

    .nav-mobile-panel a:hover,
    .nav-mobile-panel a.active {
        background: #f5f3ff;
        color: #7c3aed;
    }

    /* Hero Banner */
    .page-hero {
        background: linear-gradient(135deg, rgba(15, 23, 42, 0.85) 0%, rgba(30, 27, 75, 0.75) 100%), url('/assets/images/backpic/back-2.png') center / cover no-repeat;
        padding: 6rem 0 4rem;
        position: relative;
        overflow: hidden;
    }

    .page-hero::after {
        content: '';
        position: absolute;
        bottom: -40%;
        right: -10%;
        width: 400px;
        height: 400px;
        background: radial-gradient(circle, rgba(139, 92, 246, 0.25) 0%, transparent 60%);
        border-radius: 50%;
        pointer-events: none;
    }

    .breadcrumb-tag {
        display: inline-flex;
        align-items: center;
        gap: 0.4rem;
        background: rgba(139, 92, 246, 0.2);
        border: 1px solid rgba(167, 139, 250, 0.3);
        color: #ddd6fe;
        padding: 0.3rem 0.9rem;
        border-radius: 9999px;
        font-size: 0.82rem;
        font-weight: 500;
        backdrop-filter: blur(4px);
    }

    /* Cards */
    .card-base {
        background: #ffffff;
        border-radius: var(--radius-lg);
        box-shadow: var(--shadow-card);
        transition: var(--transition-base);
        border: 1px solid rgba(226, 232, 240, 0.6);
    }

    .card-base:hover {
        box-shadow: var(--shadow-hover);
        transform: translateY(-4px);
        border-color: #c4b5fd;
    }

    .badge-primary {
        display: inline-flex;
        align-items: center;
        gap: 0.3rem;
        background: linear-gradient(135deg, #8b5cf6, #4f46e5);
        color: #ffffff;
        padding: 0.18rem 0.7rem;
        border-radius: 9999px;
        font-size: 0.75rem;
        font-weight: 600;
        letter-spacing: 0.02em;
    }

    .badge-soft {
        display: inline-flex;
        align-items: center;
        gap: 0.3rem;
        background: #f5f3ff;
        color: #7c3aed;
        padding: 0.18rem 0.7rem;
        border-radius: 9999px;
        font-size: 0.75rem;
        font-weight: 600;
    }

    .step-card {
        background: #ffffff;
        border-radius: var(--radius-lg);
        padding: 1.5rem;
        border: 1px solid #eef2f7;
        box-shadow: var(--shadow-card);
        position: relative;
        transition: var(--transition-base);
    }

    .step-card:hover {
        box-shadow: var(--shadow-hover);
        border-color: #ddd6fe;
    }

    .step-number {
        width: 44px;
        height: 44px;
        background: linear-gradient(135deg, #8b5cf6, #4f46e5);
        color: #ffffff;
        border-radius: 16px;
        display: flex;
        align-items: center;
        justify-content: center;
        font-weight: 700;
        font-size: 1.1rem;
        box-shadow: 0 8px 20px rgba(124, 58, 237, 0.25);
        text-shadow: 0 1px 2px rgba(0, 0, 0, 0.2);
    }

    /* FAQ */
    .faq-item {
        background: #ffffff;
        border: 1px solid #eef2f7;
        border-radius: var(--radius-md);
        padding: 1.25rem 1.5rem;
        transition: var(--transition-base);
    }

    .faq-item:hover {
        border-color: #c4b5fd;
        box-shadow: var(--shadow-card);
    }

    .faq-item summary {
        cursor: pointer;
        font-weight: 600;
        color: #1e293b;
        list-style: none;
        display: flex;
        align-items: center;
        justify-content: space-between;
        gap: 1rem;
        outline: none;
    }

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

    .faq-item summary::after {
        content: '\f078';
        font-family: 'Font Awesome 6 Free';
        font-weight: 900;
        font-size: 0.8rem;
        color: #8b5cf6;
        transition: transform 0.3s ease;
        flex-shrink: 0;
    }

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

    .faq-item p {
        margin-top: 0.8rem;
        padding-top: 0.8rem;
        border-top: 1px dashed #e8eef5;
        color: #64748b;
        font-size: 0.9rem;
        line-height: 1.75;
    }

    /* CTA */
    .cta-section {
        background: linear-gradient(135deg, #1e1b4b 0%, #312e81 50%, #4c1d95 100%);
        position: relative;
        overflow: hidden;
    }

    .cta-section::before {
        content: '';
        position: absolute;
        top: -60%;
        left: 30%;
        width: 500px;
        height: 500px;
        background: radial-gradient(circle, rgba(139, 92, 246, 0.3) 0%, transparent 60%);
        border-radius: 50%;
        pointer-events: none;
    }

    /* Footer */
    .footer-link {
        position: relative;
        transition: var(--transition-base);
    }

    .footer-link:hover {
        color: #ffffff;
        padding-left: 4px;
    }

    /* responsive */
    @media (max-width: 1024px) {
        .nav-desktop {
            display: none;
        }
        .mobile-menu-btn {
            display: inline-flex;
        }
        .container {
            padding-left: 1.25rem;
            padding-right: 1.25rem;
        }
        .page-hero {
            padding: 4.5rem 0 3rem;
        }
    }

    @media (max-width: 768px) {
        .container {
            padding-left: 1rem;
            padding-right: 1rem;
        }
        .cta-buttons {
            flex-direction: column;
            width: 100%;
        }
        .cta-buttons a {
            width: 100%;
        }
        .page-hero h1 {
            font-size: 1.9rem !important;
            line-height: 1.3 !important;
        }
        .page-hero p.lead {
            font-size: 1rem !important;
        }
    }

    @media (max-width: 520px) {
        .site-header .container {
            height: 64px;
        }
        .btn-primary {
            padding: 0.5rem 1rem;
            font-size: 0.82rem;
        }
        .search-input {
            display: none;
        }
        .page-hero {
            padding: 3.5rem 0 2.5rem;
        }
    }

/* roulang page: article */
:root {
    --primary: #7c3aed;
    --primary-light: #a78bfa;
    --secondary: #06b6d4;
    --accent: #f59e0b;
    --bg: #f8fafc;
    --bg-dark: #0f172a;
    --text: #1e293b;
    --text-weak: #64748b;
    --border: #e2e8f0;
    --radius-lg: 20px;
    --radius-md: 14px;
    --radius-sm: 8px;
    --shadow-sm: 0 2px 8px rgba(2, 6, 23, .06);
    --shadow-md: 0 10px 30px rgba(2, 6, 23, .08);
    --shadow-lg: 0 24px 60px rgba(2, 6, 23, .14);
    --transition: all .3s cubic-bezier(.4, 0, .2, 1);
}
* { margin: 0; padding: 0; box-sizing: border-box; }
html { scroll-behavior: smooth; }
body { font-family: 'PingFang SC', 'Microsoft YaHei', 'Helvetica Neue', Arial, sans-serif; background: var(--bg); color: var(--text); line-height: 1.75; -webkit-font-smoothing: antialiased; }
img { max-width: 100%; height: auto; }
a { text-decoration: none; color: inherit; transition: var(--transition); }
button, input { font-family: inherit; }
.container { max-width: 1200px; margin: 0 auto; padding: 0 24px; }

/* Header */
.site-header { background: rgba(255, 255, 255, .92); backdrop-filter: blur(12px); border-bottom: 1px solid var(--border); position: sticky; top: 0; z-index: 100; }
.nav-desktop .nav-link { font-size: 14px; font-weight: 500; color: var(--text); padding: 8px 16px; border-radius: 999px; transition: var(--transition); }
.nav-desktop .nav-link:hover { color: var(--primary); background: #f5f3ff; }
.nav-desktop .nav-link.active { color: var(--primary); background: #ede9fe; font-weight: 600; }
.search-input { border: 1px solid var(--border); background: #f8fafc; transition: var(--transition); }
.search-input:focus { border-color: var(--primary); box-shadow: 0 0 0 3px rgba(124, 58, 237, .15); background: #fff; }
.btn-primary { background: linear-gradient(135deg, var(--primary), var(--secondary)); color: #fff; border-radius: 999px; padding: 12px 28px; font-weight: 600; box-shadow: var(--shadow-md); transition: var(--transition); display: inline-flex; align-items: center; justify-content: center; gap: 8px; }
.btn-primary:hover { transform: translateY(-2px); box-shadow: var(--shadow-lg); filter: brightness(1.05); color: #fff; }
.btn-primary:active { transform: translateY(0); box-shadow: var(--shadow-sm); }
.btn-primary:focus-visible, .nav-link:focus-visible, .search-input:focus-visible { outline: 3px solid rgba(124, 58, 237, .4); outline-offset: 2px; }
.btn-outline { border: 1.5px solid var(--primary); color: var(--primary); border-radius: 999px; padding: 10px 24px; font-weight: 600; transition: var(--transition); display: inline-flex; align-items: center; gap: 8px; background: transparent; }
.btn-outline:hover { background: var(--primary); color: #fff; }
.gradient-text { background: linear-gradient(135deg, var(--primary), var(--secondary)); -webkit-background-clip: text; -webkit-text-fill-color: transparent; }
.mobile-menu-btn { display: none; width: 40px; height: 40px; align-items: center; justify-content: center; border-radius: 10px; border: 1px solid var(--border); background: #fff; cursor: pointer; }
.nav-mobile-panel { display: none; }
.nav-mobile-panel.open { display: grid; gap: 4px; padding: 12px 24px 20px; border-bottom: 1px solid var(--border); background: #fff; }
.nav-mobile-panel a { font-size: 15px; font-weight: 500; padding: 10px 14px; border-radius: 10px; color: var(--text); }
.nav-mobile-panel a:hover { background: #f5f3ff; color: var(--primary); }
.nav-mobile-panel a.active { background: #ede9fe; color: var(--primary); font-weight: 600; }

/* Hero */
.article-hero { background-size: cover; background-position: center; position: relative; padding: 90px 0 70px; }
.article-hero::before { content: ''; position: absolute; inset: 0; background: linear-gradient(135deg, rgba(15, 23, 42, .88), rgba(30, 27, 75, .68)); }
.article-hero .container { position: relative; z-index: 1; }
.breadcrumb { display: flex; flex-wrap: wrap; align-items: center; gap: 8px; font-size: 13px; color: rgba(255, 255, 255, .7); margin-bottom: 18px; }
.breadcrumb a:hover { color: #fff; }
.breadcrumb i { font-size: 10px; opacity: .6; }
.article-hero h1 { font-size: 2.2rem; font-weight: 800; color: #fff; line-height: 1.35; max-width: 820px; text-shadow: 0 2px 20px rgba(0, 0, 0, .2); }
.article-meta { display: flex; flex-wrap: wrap; gap: 18px; margin-top: 22px; font-size: 14px; color: rgba(255, 255, 255, .8); }
.article-meta span { display: inline-flex; align-items: center; gap: 6px; }
.article-meta i { opacity: .8; }
.hero-badge { display: inline-flex; align-items: center; gap: 6px; background: rgba(255, 255, 255, .15); border: 1px solid rgba(255, 255, 255, .25); color: #fff; padding: 4px 14px; border-radius: 999px; font-size: 13px; font-weight: 500; margin-bottom: 16px; backdrop-filter: blur(6px); }

/* Main Layout */
.article-main { padding: 50px 0 20px; }
.article-layout { display: grid; grid-template-columns: 1fr 330px; gap: 44px; align-items: start; }
.article-content-card { background: #fff; border-radius: var(--radius-lg); box-shadow: var(--shadow-sm); border: 1px solid var(--border); padding: 40px 44px; }
.article-body { font-size: 16px; line-height: 1.9; color: #334155; }
.article-body h2 { font-size: 1.5rem; font-weight: 700; margin: 36px 0 16px; color: #0f172a; padding-left: 14px; border-left: 4px solid var(--primary); }
.article-body h3 { font-size: 1.2rem; font-weight: 600; margin: 28px 0 12px; color: #1e293b; }
.article-body p { margin-bottom: 18px; }
.article-body img { border-radius: 12px; margin: 24px 0; box-shadow: var(--shadow-md); }
.article-body ul, .article-body ol { margin: 0 0 18px 22px; }
.article-body li { margin-bottom: 8px; }
.article-body blockquote { border-left: 4px solid var(--secondary); background: #f0fdfa; padding: 16px 22px; border-radius: 0 12px 12px 0; margin: 22px 0; color: #155e75; }
.article-body table { width: 100%; border-collapse: collapse; margin: 22px 0; font-size: 15px; }
.article-body th, .article-body td { border: 1px solid var(--border); padding: 12px; text-align: left; }
.article-body th { background: #f8fafc; font-weight: 600; }
.article-body a { color: var(--primary); text-decoration: underline; text-underline-offset: 2px; }
.article-body a:hover { opacity: .8; }
.article-tags { display: flex; flex-wrap: wrap; gap: 10px; margin-top: 32px; padding-top: 24px; border-top: 1px solid var(--border); }
.tag { display: inline-flex; align-items: center; gap: 6px; background: #f1f5f9; border: 1px solid var(--border); color: var(--text-weak); font-size: 13px; padding: 5px 14px; border-radius: 999px; transition: var(--transition); }
.tag:hover { background: #ede9fe; color: var(--primary); border-color: #c4b5fd; }
.tag i { font-size: 11px; }
.not-found-box { text-align: center; padding: 60px 20px; }
.not-found-box i { font-size: 48px; color: #c4b5fd; margin-bottom: 16px; }
.not-found-box h2 { font-size: 1.5rem; font-weight: 700; color: #1e293b; margin-bottom: 8px; }
.not-found-box p { color: var(--text-weak); margin-bottom: 24px; }

/* Sidebar */
.sidebar-card { background: #fff; border-radius: var(--radius-md); padding: 26px; box-shadow: var(--shadow-sm); border: 1px solid var(--border); }
.sidebar-card + .sidebar-card { margin-top: 20px; }
.sidebar-card h3 { font-size: 1rem; font-weight: 700; margin-bottom: 16px; display: flex; align-items: center; gap: 10px; color: #0f172a; }
.sidebar-card h3 i { color: var(--primary); }
.login-entry-box { background: linear-gradient(135deg, #f5f3ff, #ecfeff); border-radius: 12px; padding: 20px; text-align: center; }
.login-entry-box .lock-icon { width: 48px; height: 48px; border-radius: 14px; background: linear-gradient(135deg, var(--primary), var(--secondary)); display: flex; align-items: center; justify-content: center; margin: 0 auto 12px; box-shadow: var(--shadow-md); }
.login-entry-box .lock-icon i { font-size: 20px; color: #fff; }
.login-entry-box p { font-size: 14px; color: var(--text); margin-bottom: 16px; }
.related-list { list-style: none; }
.related-list li { padding: 11px 0; border-bottom: 1px dashed var(--border); }
.related-list li:last-child { border-bottom: none; }
.related-list a { font-size: 14px; color: var(--text); display: flex; gap: 10px; align-items: flex-start; }
.related-list a:hover { color: var(--primary); }
.related-list .related-date { font-size: 12px; color: var(--text-weak); white-space: nowrap; margin-left: auto; }
.cat-menu-list { list-style: none; }
.cat-menu-list li { margin-bottom: 8px; }
.cat-menu-list a { display: flex; align-items: center; gap: 10px; padding: 10px 14px; border-radius: 10px; font-size: 14px; background: #f8fafc; border: 1px solid transparent; transition: var(--transition); }
.cat-menu-list a:hover { background: #f5f3ff; border-color: #c4b5fd; color: var(--primary); }
.cat-menu-list i { width: 20px; text-align: center; color: var(--primary); }
.contact-box { background: #0f172a; color: #e2e8f0; }
.contact-box h3 i { color: var(--accent); }
.contact-box p { font-size: 14px; color: #94a3b8; margin-bottom: 14px; }

/* Related Section */
.related-section { padding: 30px 0 20px; }
.section-title { font-size: 1.5rem; font-weight: 700; color: #0f172a; margin-bottom: 8px; display: flex; align-items: center; gap: 10px; }
.section-title i { color: var(--primary); background: #f5f3ff; width: 38px; height: 38px; border-radius: 10px; display: flex; align-items: center; justify-content: center; font-size: 16px; }
.section-subtitle { color: var(--text-weak); font-size: 15px; margin-bottom: 30px; }
.related-grid { display: grid; grid-template-columns: repeat(4, 1fr); gap: 22px; }
.related-card { background: #fff; border-radius: var(--radius-md); overflow: hidden; box-shadow: var(--shadow-sm); border: 1px solid var(--border); transition: var(--transition); display: flex; flex-direction: column; }
.related-card:hover { transform: translateY(-4px); box-shadow: var(--shadow-lg); }
.related-card-img { height: 160px; background-size: cover; background-position: center; position: relative; }
.related-card-img .img-tag { position: absolute; top: 12px; left: 12px; background: rgba(15, 23, 42, .7); color: #fff; font-size: 12px; padding: 3px 10px; border-radius: 999px; backdrop-filter: blur(4px); }
.related-card-body { padding: 18px; flex: 1; display: flex; flex-direction: column; }
.related-card-body h4 { font-size: 15px; font-weight: 600; line-height: 1.5; margin-bottom: 8px; color: #0f172a; display: -webkit-box; -webkit-line-clamp: 2; -webkit-box-orient: vertical; overflow: hidden; }
.related-card-body p { font-size: 13px; color: var(--text-weak); line-height: 1.6; margin-bottom: 12px; display: -webkit-box; -webkit-line-clamp: 2; -webkit-box-orient: vertical; overflow: hidden; }
.related-card-body .card-meta { margin-top: auto; font-size: 12px; color: #94a3b8; display: flex; justify-content: space-between; }

/* Quick Guide */
.quick-guide { padding: 50px 0; background: linear-gradient(135deg, #f5f7fa, #fff); border-top: 1px solid var(--border); border-bottom: 1px solid var(--border); }
.guide-grid { display: grid; grid-template-columns: repeat(3, 1fr); gap: 24px; margin-top: 36px; }
.guide-card { background: #fff; border-radius: var(--radius-lg); padding: 30px; box-shadow: var(--shadow-sm); border: 1px solid var(--border); text-align: center; transition: var(--transition); }
.guide-card:hover { transform: translateY(-6px); box-shadow: var(--shadow-lg); }
.guide-icon { width: 56px; height: 56px; border-radius: 16px; display: flex; align-items: center; justify-content: center; margin: 0 auto 18px; font-size: 22px; }
.guide-icon.a { background: #f5f3ff; color: var(--primary); }
.guide-icon.b { background: #ecfeff; color: var(--secondary); }
.guide-icon.c { background: #fef3c7; color: #d97706; }
.guide-card h4 { font-size: 1.05rem; font-weight: 700; margin-bottom: 10px; color: #0f172a; }
.guide-card p { font-size: 14px; color: var(--text-weak); line-height: 1.7; }

/* FAQ */
.faq-section { padding: 60px 0; }
.faq-grid { display: grid; grid-template-columns: repeat(2, 1fr); gap: 18px; margin-top: 36px; }
.faq-item { background: #fff; border-radius: var(--radius-md); padding: 24px; box-shadow: var(--shadow-sm); border: 1px solid var(--border); transition: var(--transition); }
.faq-item:hover { box-shadow: var(--shadow-md); border-color: #c4b5fd; }
.faq-item h4 { display: flex; gap: 10px; align-items: flex-start; font-size: 15px; font-weight: 600; color: #0f172a; margin-bottom: 10px; }
.faq-item h4 i { color: var(--primary); margin-top: 3px; font-size: 14px; }
.faq-item p { font-size: 14px; color: var(--text-weak); line-height: 1.7; padding-left: 24px; }

/* CTA */
.cta-section { background-size: cover; background-position: center; position: relative; padding: 80px 0; text-align: center; }
.cta-section::before { content: ''; position: absolute; inset: 0; background: rgba(15, 23, 42, .78); }
.cta-section .container { position: relative; z-index: 1; }
.cta-section h2 { font-size: 2rem; font-weight: 800; color: #fff; margin-bottom: 12px; }
.cta-section p { color: rgba(255, 255, 255, .8); font-size: 15px; max-width: 600px; margin: 0 auto 30px; }
.cta-actions { display: flex; gap: 14px; justify-content: center; flex-wrap: wrap; }
.btn-light { background: #fff; color: var(--primary); border-radius: 999px; padding: 14px 32px; font-weight: 600; box-shadow: var(--shadow-md); transition: var(--transition); }
.btn-light:hover { transform: translateY(-2px); box-shadow: var(--shadow-lg); color: var(--primary); }

/* Footer */
footer { background: var(--bg-dark); color: #94a3b8; }
footer a:hover { color: #fff !important; }

/* Responsive */
@media (max-width: 1024px) {
    .article-hero h1 { font-size: 1.9rem; }
    .related-grid { grid-template-columns: repeat(2, 1fr); }
    .guide-grid { grid-template-columns: repeat(3, 1fr); }
}
@media (max-width: 768px) {
    .nav-desktop { display: none; }
    .mobile-menu-btn { display: flex; }
    .nav-mobile-panel.open { display: grid; }
    .article-hero { padding: 60px 0 40px; }
    .article-hero h1 { font-size: 1.6rem; }
    .article-layout { grid-template-columns: 1fr; }
    .article-content-card { padding: 28px 22px; }
    .related-grid { grid-template-columns: 1fr; }
    .guide-grid { grid-template-columns: 1fr; }
    .faq-grid { grid-template-columns: 1fr; }
    .cta-section { padding: 60px 0; }
    .cta-section h2 { font-size: 1.5rem; }
    .article-content-card { border-radius: 14px; }
    .container { padding: 0 16px; }
}
@media (max-width: 520px) {
    .article-hero h1 { font-size: 1.4rem; }
    .related-grid { grid-template-columns: 1fr; }
    .footer-grid { grid-template-columns: 1fr !important; gap: 20px !important; }
    .search-input { width: 120px !important; }
    .btn-primary { padding: 10px 18px !important; font-size: 13px !important; }
}
@media (min-width: 769px) {
    .nav-mobile-panel { display: none !important; }
    .mobile-menu-btn { display: none; }
}

/* roulang page: category2 */
:root {
            --star-50: #f0f4ff;
            --star-100: #e0eaff;
            --star-200: #c7d9fe;
            --star-300: #a4bffd;
            --star-400: #7a9bfa;
            --star-500: #5675f5;
            --star-600: #3b51e8;
            --star-700: #2f3ece;
            --star-800: #2935a3;
            --star-900: #28327e;
            --nebula-400: #a78bfa;
            --nebula-500: #8b5cf6;
            --nebula-600: #7c3aed;
            --nebula-700: #6d28d9;
            --bg: #f8faff;
            --card-bg: #ffffff;
            --border: #eef0f5;
            --text: #1e293b;
            --text-weak: #64748b;
            --radius-lg: 1.25rem;
            --radius-md: .875rem;
            --shadow-sm: 0 4px 14px rgba(34, 44, 86, .06);
            --shadow-md: 0 12px 30px rgba(34, 44, 86, .08);
            --shadow-lg: 0 24px 50px rgba(34, 44, 86, .12);
        }
        * {
            margin: 0;
            padding: 0;
            box-sizing: border-box;
        }
        html {
            scroll-behavior: smooth;
            scroll-padding-top: 88px;
        }
        body {
            font-family: ui-sans-serif, system-ui, -apple-system, "Segoe UI", Roboto, "Helvetica Neue", "PingFang SC", "Hiragino Sans GB", "Microsoft YaHei", sans-serif;
            background: var(--bg);
            color: var(--text);
            line-height: 1.6;
            -webkit-font-smoothing: antialiased;
        }
        img {
            max-width: 100%;
            display: block;
        }
        a {
            text-decoration: none;
            color: inherit;
        }
        button {
            font: inherit;
            cursor: pointer;
        }
        input,
        summary,
        details {
            font: inherit;
        }
        :focus-visible {
            outline: 3px solid rgba(86, 117, 245, .4);
            outline-offset: 2px;
            border-radius: 10px;
        }
        .container {
            max-width: 1200px;
            margin-inline: auto;
            padding-inline: 1.25rem;
        }
        @media (max-width: 768px) {
            .container {
                padding-inline: 1rem;
            }
        }
        .gradient-text {
            background: linear-gradient(120deg, var(--star-400), var(--nebula-500));
            -webkit-background-clip: text;
            background-clip: text;
            color: transparent;
        }
        .section {
            padding: 5rem 0;
        }
        @media (max-width: 768px) {
            .section {
                padding: 3rem 0;
            }
        }
        .bg-soft {
            background: linear-gradient(180deg, #f8faff 0%, #eef2ff 100%);
        }
        .section-dark {
            background: linear-gradient(135deg, #0f1b3d 0%, #1b1444 55%, #2a1557 100%);
            color: #fff;
        }
        .site-header {
            position: sticky;
            top: 0;
            z-index: 50;
            background: rgba(255, 255, 255, .86);
            backdrop-filter: blur(14px);
            border-bottom: 1px solid rgba(226, 232, 240, .85);
        }
        .nav-link {
            display: inline-flex;
            align-items: center;
            gap: .4rem;
            padding: .5rem .95rem;
            border-radius: 9999px;
            font-size: .92rem;
            font-weight: 500;
            color: #475569;
            transition: all .22s ease;
            white-space: nowrap;
        }
        .nav-link:hover {
            background: #f1f5f9;
            color: #1e293b;
        }
        .nav-link.active {
            background: linear-gradient(120deg, var(--star-500), var(--nebula-600));
            color: #fff;
            box-shadow: 0 8px 20px rgba(86, 117, 245, .35);
        }
        .nav-mobile-panel {
            display: none;
            flex-direction: column;
            padding: .9rem 1.25rem 1.25rem;
            gap: .4rem;
            background: #fff;
            border-top: 1px solid #f1f5f9;
        }
        .nav-mobile-panel.open {
            display: flex;
        }
        .nav-mobile-panel a {
            padding: .7rem 1rem;
            border-radius: .85rem;
            font-weight: 500;
            color: #334155;
            transition: background .2s ease;
        }
        .nav-mobile-panel a:hover {
            background: #f8fafc;
            color: #1e293b;
        }
        .nav-mobile-panel a.active {
            background: linear-gradient(120deg, var(--star-500), var(--nebula-600));
            color: #fff;
        }
        .mobile-menu-btn {
            display: none;
            align-items: center;
            justify-content: center;
            width: 42px;
            height: 42px;
            border-radius: 12px;
            border: 1px solid #e2e8f0;
            background: #fff;
            transition: all .2s ease;
        }
        .mobile-menu-btn:hover {
            background: #f8fafc;
            border-color: #cbd5e1;
        }
        .search-input {
            border: 1px solid #e2e8f0;
            background: #f8fafc;
            width: 100%;
            transition: all .22s ease;
        }
        .search-input:focus {
            border-color: var(--star-400);
            background: #fff;
            box-shadow: 0 0 0 4px rgba(86, 117, 245, .12);
        }
        .btn-primary {
            display: inline-flex;
            align-items: center;
            justify-content: center;
            gap: .45rem;
            background: linear-gradient(120deg, var(--star-500), var(--nebula-600));
            color: #fff;
            font-weight: 600;
            border: none;
            border-radius: 9999px;
            padding: .75rem 1.45rem;
            box-shadow: 0 10px 26px rgba(86, 117, 245, .35);
            transition: all .25s ease;
            white-space: nowrap;
        }
        .btn-primary:hover {
            transform: translateY(-2px);
            box-shadow: 0 16px 34px rgba(86, 117, 245, .42);
        }
        .btn-primary:active {
            transform: translateY(0);
            box-shadow: 0 6px 16px rgba(86, 117, 245, .3);
        }
        .btn-outline {
            display: inline-flex;
            align-items: center;
            justify-content: center;
            gap: .45rem;
            background: rgba(255, 255, 255, .08);
            border: 1px solid rgba(255, 255, 255, .55);
            color: #fff;
            font-weight: 600;
            border-radius: 9999px;
            padding: .75rem 1.45rem;
            backdrop-filter: blur(4px);
            transition: all .25s ease;
            white-space: nowrap;
        }
        .btn-outline:hover {
            background: rgba(255, 255, 255, .18);
            border-color: #fff;
            transform: translateY(-2px);
        }
        .btn-white {
            display: inline-flex;
            align-items: center;
            justify-content: center;
            gap: .45rem;
            background: #fff;
            color: #2f3ece;
            font-weight: 700;
            border-radius: 9999px;
            padding: .85rem 1.7rem;
            box-shadow: 0 14px 34px rgba(15, 23, 42, .2);
            transition: all .25s ease;
            white-space: nowrap;
        }
        .btn-white:hover {
            transform: translateY(-2px);
            box-shadow: 0 18px 40px rgba(15, 23, 42, .28);
            color: #1b1a4d;
        }
        .badge {
            display: inline-flex;
            align-items: center;
            gap: .4rem;
            padding: .5rem 1.15rem;
            border-radius: 9999px;
            font-size: .85rem;
            font-weight: 600;
            letter-spacing: .02em;
            background: rgba(255, 255, 255, .16);
            border: 1px solid rgba(255, 255, 255, .3);
            color: #fff;
            backdrop-filter: blur(6px);
        }
        .card {
            background: #fff;
            border: 1px solid var(--border);
            border-radius: var(--radius-lg);
            padding: 1.5rem;
            transition: all .3s ease;
        }
        .card:hover {
            transform: translateY(-4px);
            box-shadow: var(--shadow-lg);
            border-color: #dbe4ff;
        }
        .stat-card {
            text-align: center;
            padding: 1rem .5rem;
        }
        .stat-num {
            font-size: 2.1rem;
            font-weight: 800;
            line-height: 1.2;
            background: linear-gradient(120deg, var(--star-500), var(--nebula-600));
            -webkit-background-clip: text;
            background-clip: text;
            color: transparent;
        }
        @media (max-width: 768px) {
            .stat-num {
                font-size: 1.6rem;
            }
        }
        .faq-item {
            background: #fff;
            border: 1px solid var(--border);
            border-radius: 1rem;
            transition: all .25s ease;
        }
        .faq-item[open] {
            border-color: #cdd9ff;
            box-shadow: 0 14px 34px rgba(86, 117, 245, .1);
        }
        .faq-item summary {
            cursor: pointer;
            list-style: none;
            padding: 1.25rem 1.5rem;
            font-weight: 600;
            color: #1e293b;
            display: flex;
            justify-content: space-between;
            align-items: center;
            gap: 1rem;
        }
        .faq-item summary::-webkit-details-marker {
            display: none;
        }
        .faq-item summary::after {
            content: "+";
            flex-shrink: 0;
            font-size: 1.3rem;
            font-weight: 400;
            color: var(--star-500);
            transition: transform .25s ease;
        }
        .faq-item[open] summary::after {
            transform: rotate(45deg);
        }
        .faq-body {
            padding: 0 1.5rem 1.35rem;
            color: var(--text-weak);
            line-height: 1.75;
            font-size: .95rem;
        }
        .step-card {
            background: #fff;
            border: 1px solid var(--border);
            border-radius: var(--radius-lg);
            padding: 1.75rem 1.4rem 1.5rem;
            transition: all .3s ease;
            display: flex;
            flex-direction: column;
            gap: 1rem;
        }
        .step-card:hover {
            transform: translateY(-5px);
            box-shadow: var(--shadow-lg);
            border-color: #dbe4ff;
        }
        .step-num {
            width: 46px;
            height: 46px;
            border-radius: 14px;
            flex-shrink: 0;
            background: linear-gradient(135deg, var(--star-500), var(--nebula-600));
            color: #fff;
            font-weight: 700;
            font-size: 1.1rem;
            display: flex;
            align-items: center;
            justify-content: center;
            box-shadow: 0 10px 22px rgba(86, 117, 245, .3);
        }
        .section-dark .step-card {
            background: rgba(255, 255, 255, .07);
            border: 1px solid rgba(255, 255, 255, .13);
            backdrop-filter: blur(8px);
        }
        .section-dark .step-card h4 {
            color: #fff;
        }
        .section-dark .step-card p {
            color: #cbd5e1;
        }
        .section-dark .step-card:hover {
            background: rgba(255, 255, 255, .12);
            border-color: rgba(255, 255, 255, .25);
        }
        @media (min-width: 1024px) {
            .mobile-menu-btn {
                display: none !important;
            }
            .nav-mobile-panel {
                display: none !important;
            }
        }
        @media (max-width: 1023.9px) {
            .nav-desktop {
                display: none;
            }
            .mobile-menu-btn {
                display: inline-flex;
            }
        }