/* roulang page: index */
:root {
    --primary: #e85d26;
    --primary-dark: #c94d1c;
    --primary-light: #fdf2ee;
    --accent: #f5a623;
    --bg: #ffffff;
    --bg-alt: #f8f9fb;
    --bg-dark: #1a1d23;
    --text: #1e2024;
    --text-light: #6b6f77;
    --text-white: #ffffff;
    --border: #e8eaed;
    --radius: 12px;
    --radius-sm: 8px;
    --radius-lg: 20px;
    --shadow: 0 4px 20px rgba(0,0,0,0.06);
    --shadow-hover: 0 12px 40px rgba(0,0,0,0.10);
    --transition: 0.3s cubic-bezier(0.22, 1, 0.36, 1);
    --font: 'Inter', -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, 'Helvetica Neue', sans-serif;
    --max-width: 1200px;
    --nav-height: 72px;
}

*, *::before, *::after { box-sizing: border-box; margin: 0; padding: 0; }
html { scroll-behavior: smooth; }
body {
    font-family: var(--font);
    color: var(--text);
    background: var(--bg);
    line-height: 1.6;
    -webkit-font-smoothing: antialiased;
}
a { color: inherit; text-decoration: none; transition: var(--transition); }
img { max-width: 100%; height: auto; display: block; }
button, input, textarea { font-family: inherit; font-size: 1rem; border: none; outline: none; }
ul, ol { list-style: none; }
h1, h2, h3, h4, h5, h6 { line-height: 1.25; font-weight: 600; color: var(--text); }

.container {
    width: 100%;
    max-width: var(--max-width);
    margin: 0 auto;
    padding: 0 24px;
}

/* Header & Navigation */
.site-header {
    position: fixed;
    top: 0;
    left: 0;
    right: 0;
    z-index: 1000;
    height: var(--nav-height);
    background: rgba(255,255,255,0.92);
    backdrop-filter: blur(12px);
    -webkit-backdrop-filter: blur(12px);
    border-bottom: 1px solid var(--border);
    transition: var(--transition);
}
.site-header.scrolled { box-shadow: 0 2px 24px rgba(0,0,0,0.06); }
.header-inner {
    display: flex;
    align-items: center;
    justify-content: space-between;
    height: var(--nav-height);
    max-width: var(--max-width);
    margin: 0 auto;
    padding: 0 24px;
}
.logo {
    font-size: 1.5rem;
    font-weight: 700;
    color: var(--primary);
    letter-spacing: -0.02em;
    display: flex;
    align-items: center;
    gap: 10px;
}
.logo i { font-size: 1.6rem; color: var(--primary); }
.nav-list {
    display: flex;
    align-items: center;
    gap: 40px;
}
.nav-list a {
    font-size: 0.95rem;
    font-weight: 500;
    color: var(--text-light);
    padding: 6px 0;
    position: relative;
    transition: var(--transition);
}
.nav-list a::after {
    content: '';
    position: absolute;
    bottom: -2px;
    left: 0;
    width: 0;
    height: 2px;
    background: var(--primary);
    border-radius: 2px;
    transition: var(--transition);
}
.nav-list a:hover { color: var(--text); }
.nav-list a:hover::after { width: 100%; }
.nav-list a.active { color: var(--text); }
.nav-list a.active::after { width: 100%; }
.nav-cta {
    background: var(--primary);
    color: #fff !important;
    padding: 8px 22px !important;
    border-radius: 50px;
    font-weight: 600;
    font-size: 0.9rem;
    transition: var(--transition);
}
.nav-cta::after { display: none !important; }
.nav-cta:hover { background: var(--primary-dark); transform: translateY(-1px); box-shadow: 0 6px 20px rgba(232,93,38,0.3); }
.mobile-toggle { display: none; font-size: 1.5rem; color: var(--text); cursor: pointer; background: none; padding: 4px; }

/* Hero Section */
.hero {
    padding: 140px 0 80px;
    background: var(--bg-alt);
    position: relative;
    overflow: hidden;
    min-height: 80vh;
    display: flex;
    align-items: center;
}
.hero-bg {
    position: absolute;
    inset: 0;
    background-image: url('/assets/images/backpic/back-1.png');
    background-size: cover;
    background-position: center;
    background-repeat: no-repeat;
    opacity: 0.25;
    z-index: 0;
}
.hero-bg::after {
    content: '';
    position: absolute;
    inset: 0;
    background: linear-gradient(135deg, rgba(255,255,255,0.92) 0%, rgba(255,255,255,0.70) 100%);
}
.hero .container { position: relative; z-index: 1; }
.hero-grid {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 60px;
    align-items: center;
}
.hero-content { max-width: 600px; }
.hero-tag {
    display: inline-flex;
    align-items: center;
    gap: 8px;
    background: var(--primary-light);
    color: var(--primary);
    padding: 6px 18px;
    border-radius: 50px;
    font-size: 0.85rem;
    font-weight: 500;
    margin-bottom: 24px;
}
.hero-tag i { font-size: 0.75rem; }
.hero h1 {
    font-size: 3.2rem;
    font-weight: 700;
    line-height: 1.15;
    margin-bottom: 20px;
    letter-spacing: -0.02em;
    color: var(--text);
}
.hero h1 span { color: var(--primary); }
.hero p {
    font-size: 1.15rem;
    color: var(--text-light);
    max-width: 520px;
    margin-bottom: 36px;
    line-height: 1.7;
}
.hero-actions {
    display: flex;
    gap: 16px;
    flex-wrap: wrap;
}
.btn {
    display: inline-flex;
    align-items: center;
    gap: 10px;
    padding: 14px 32px;
    border-radius: 50px;
    font-weight: 600;
    font-size: 1rem;
    cursor: pointer;
    transition: var(--transition);
    border: none;
}
.btn-primary {
    background: var(--primary);
    color: #fff;
}
.btn-primary:hover { background: var(--primary-dark); transform: translateY(-2px); box-shadow: 0 8px 28px rgba(232,93,38,0.35); }
.btn-outline {
    background: transparent;
    color: var(--text);
    border: 2px solid var(--border);
}
.btn-outline:hover { border-color: var(--primary); color: var(--primary); transform: translateY(-2px); }
.hero-visual {
    display: flex;
    justify-content: center;
    align-items: center;
    position: relative;
}
.hero-visual img {
    width: 100%;
    max-width: 520px;
    border-radius: var(--radius-lg);
    box-shadow: var(--shadow-hover);
    object-fit: cover;
    aspect-ratio: 4/3;
}
.hero-stats {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: 20px;
    margin-top: 48px;
    padding-top: 32px;
    border-top: 1px solid var(--border);
}
.stat-item { text-align: center; }
.stat-number {
    font-size: 1.8rem;
    font-weight: 700;
    color: var(--primary);
    line-height: 1.1;
}
.stat-label {
    font-size: 0.85rem;
    color: var(--text-light);
    margin-top: 4px;
}

/* Section Common */
.section {
    padding: 80px 0;
}
.section-alt { background: var(--bg-alt); }
.section-dark { background: var(--bg-dark); color: var(--text-white); }
.section-dark h2, .section-dark h3, .section-dark .section-sub { color: var(--text-white); }
.section-header {
    text-align: center;
    max-width: 680px;
    margin: 0 auto 56px;
}
.section-header h2 {
    font-size: 2.4rem;
    font-weight: 700;
    margin-bottom: 16px;
    letter-spacing: -0.01em;
}
.section-sub {
    font-size: 1.05rem;
    color: var(--text-light);
    line-height: 1.7;
}

/* Feature Cards */
.feature-grid {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: 30px;
}
.feature-card {
    background: var(--bg);
    border-radius: var(--radius);
    padding: 36px 28px;
    box-shadow: var(--shadow);
    transition: var(--transition);
    border: 1px solid var(--border);
    text-align: center;
}
.feature-card:hover { transform: translateY(-6px); box-shadow: var(--shadow-hover); }
.feature-icon {
    width: 60px;
    height: 60px;
    border-radius: 16px;
    display: flex;
    align-items: center;
    justify-content: center;
    margin: 0 auto 20px;
    font-size: 1.6rem;
    color: #fff;
    background: var(--primary);
}
.feature-card h3 { font-size: 1.3rem; margin-bottom: 12px; }
.feature-card p { font-size: 0.95rem; color: var(--text-light); line-height: 1.6; }

/* Category Cards */
.category-grid {
    display: grid;
    grid-template-columns: repeat(4, 1fr);
    gap: 24px;
}
.category-card {
    position: relative;
    border-radius: var(--radius);
    overflow: hidden;
    box-shadow: var(--shadow);
    transition: var(--transition);
    background: var(--bg);
    border: 1px solid var(--border);
    cursor: pointer;
}
.category-card:hover { transform: translateY(-4px); box-shadow: var(--shadow-hover); }
.category-card img {
    width: 100%;
    aspect-ratio: 16/10;
    object-fit: cover;
}
.category-card-body {
    padding: 18px 20px 22px;
}
.category-card-body h3 { font-size: 1.1rem; font-weight: 600; margin-bottom: 6px; }
.category-card-body p { font-size: 0.88rem; color: var(--text-light); }
.category-tag {
    display: inline-block;
    background: var(--primary-light);
    color: var(--primary);
    font-size: 0.75rem;
    font-weight: 500;
    padding: 2px 12px;
    border-radius: 50px;
    margin-bottom: 10px;
}

/* Content / News List */
.news-grid {
    display: grid;
    grid-template-columns: repeat(2, 1fr);
    gap: 30px;
}
.news-card {
    display: flex;
    gap: 20px;
    background: var(--bg);
    border-radius: var(--radius);
    padding: 20px;
    box-shadow: var(--shadow);
    border: 1px solid var(--border);
    transition: var(--transition);
}
.news-card:hover { transform: translateY(-3px); box-shadow: var(--shadow-hover); }
.news-card img {
    width: 140px;
    height: 100px;
    border-radius: var(--radius-sm);
    object-fit: cover;
    flex-shrink: 0;
}
.news-card-content { flex: 1; min-width: 0; }
.news-card-content .tag {
    display: inline-block;
    background: var(--primary-light);
    color: var(--primary);
    font-size: 0.72rem;
    font-weight: 500;
    padding: 2px 10px;
    border-radius: 50px;
    margin-bottom: 8px;
}
.news-card-content h3 {
    font-size: 1.05rem;
    font-weight: 600;
    margin-bottom: 8px;
    display: -webkit-box;
    -webkit-line-clamp: 2;
    -webkit-box-orient: vertical;
    overflow: hidden;
}
.news-card-content p {
    font-size: 0.88rem;
    color: var(--text-light);
    display: -webkit-box;
    -webkit-line-clamp: 2;
    -webkit-box-orient: vertical;
    overflow: hidden;
    margin-bottom: 10px;
}
.news-meta {
    font-size: 0.8rem;
    color: var(--text-light);
    display: flex;
    gap: 16px;
    align-items: center;
}
.news-meta i { margin-right: 4px; }
.news-empty {
    grid-column: 1 / -1;
    text-align: center;
    padding: 48px 20px;
    color: var(--text-light);
    background: var(--bg);
    border-radius: var(--radius);
    border: 1px dashed var(--border);
    font-size: 1rem;
}

/* Data / Stats Strip */
.data-strip {
    display: grid;
    grid-template-columns: repeat(4, 1fr);
    gap: 30px;
    text-align: center;
}
.data-item {
    padding: 32px 16px;
    background: rgba(255,255,255,0.06);
    border-radius: var(--radius);
    border: 1px solid rgba(255,255,255,0.10);
}
.data-item .num {
    font-size: 2.6rem;
    font-weight: 700;
    color: var(--accent);
    line-height: 1.1;
}
.data-item .label {
    font-size: 0.95rem;
    color: rgba(255,255,255,0.7);
    margin-top: 8px;
}

/* Process / Steps */
.steps-grid {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: 40px;
    position: relative;
}
.step-card {
    text-align: center;
    position: relative;
}
.step-number {
    width: 52px;
    height: 52px;
    border-radius: 50%;
    background: var(--primary);
    color: #fff;
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 1.3rem;
    font-weight: 700;
    margin: 0 auto 20px;
    position: relative;
    z-index: 1;
}
.step-card h3 { font-size: 1.15rem; margin-bottom: 10px; }
.step-card p { font-size: 0.92rem; color: var(--text-light); line-height: 1.6; }

/* FAQ */
.faq-list {
    max-width: 780px;
    margin: 0 auto;
    display: flex;
    flex-direction: column;
    gap: 12px;
}
.faq-item {
    background: var(--bg);
    border: 1px solid var(--border);
    border-radius: var(--radius-sm);
    overflow: hidden;
    transition: var(--transition);
}
.faq-item.active { border-color: var(--primary); }
.faq-question {
    display: flex;
    justify-content: space-between;
    align-items: center;
    padding: 18px 24px;
    cursor: pointer;
    font-weight: 500;
    font-size: 1rem;
    background: none;
    width: 100%;
    text-align: left;
    color: var(--text);
    transition: var(--transition);
}
.faq-question:hover { color: var(--primary); }
.faq-question i { font-size: 0.8rem; transition: var(--transition); color: var(--text-light); }
.faq-item.active .faq-question i { transform: rotate(180deg); color: var(--primary); }
.faq-answer {
    max-height: 0;
    overflow: hidden;
    transition: var(--transition);
    padding: 0 24px;
    color: var(--text-light);
    font-size: 0.95rem;
    line-height: 1.7;
    border-top: 0 solid var(--border);
}
.faq-item.active .faq-answer {
    max-height: 260px;
    padding: 16px 24px 20px;
    border-top-width: 1px;
}

/* CTA */
.cta-section {
    background: var(--primary);
    border-radius: var(--radius-lg);
    padding: 64px 48px;
    text-align: center;
    color: #fff;
    position: relative;
    overflow: hidden;
}
.cta-section::before {
    content: '';
    position: absolute;
    inset: 0;
    background: url('/assets/images/backpic/back-2.png') center/cover no-repeat;
    opacity: 0.10;
}
.cta-section h2 { font-size: 2.2rem; font-weight: 700; margin-bottom: 16px; position: relative; color: #fff; }
.cta-section p { font-size: 1.1rem; opacity: 0.9; margin-bottom: 32px; max-width: 560px; margin-left: auto; margin-right: auto; position: relative; }
.cta-section .btn {
    background: #fff;
    color: var(--primary);
    font-weight: 700;
    position: relative;
}
.cta-section .btn:hover { background: #f0f0f0; transform: translateY(-2px); box-shadow: 0 8px 30px rgba(0,0,0,0.15); }

/* Footer */
.site-footer {
    background: var(--bg-dark);
    color: rgba(255,255,255,0.7);
    padding: 60px 0 32px;
}
.footer-grid {
    display: grid;
    grid-template-columns: 2fr 1fr 1fr 1fr;
    gap: 40px;
    margin-bottom: 40px;
}
.footer-brand .logo { color: #fff; margin-bottom: 16px; }
.footer-brand .logo i { color: var(--primary); }
.footer-brand p { font-size: 0.9rem; line-height: 1.7; max-width: 320px; }
.footer-col h4 { color: #fff; font-size: 1rem; font-weight: 600; margin-bottom: 18px; }
.footer-col a {
    display: block;
    font-size: 0.9rem;
    color: rgba(255,255,255,0.6);
    padding: 5px 0;
    transition: var(--transition);
}
.footer-col a:hover { color: var(--primary); padding-left: 4px; }
.footer-bottom {
    border-top: 1px solid rgba(255,255,255,0.08);
    padding-top: 24px;
    display: flex;
    justify-content: space-between;
    align-items: center;
    flex-wrap: wrap;
    gap: 12px;
    font-size: 0.85rem;
    color: rgba(255,255,255,0.45);
}
.footer-social { display: flex; gap: 16px; }
.footer-social a {
    width: 40px;
    height: 40px;
    border-radius: 50%;
    background: rgba(255,255,255,0.06);
    display: flex;
    align-items: center;
    justify-content: center;
    color: rgba(255,255,255,0.6);
    transition: var(--transition);
    font-size: 1rem;
}
.footer-social a:hover { background: var(--primary); color: #fff; transform: translateY(-2px); }

/* Responsive */
@media (max-width: 1024px) {
    .hero h1 { font-size: 2.6rem; }
    .hero-grid { gap: 40px; }
    .feature-grid { grid-template-columns: repeat(2, 1fr); }
    .category-grid { grid-template-columns: repeat(3, 1fr); }
    .footer-grid { grid-template-columns: repeat(2, 1fr); }
}
@media (max-width: 768px) {
    .nav-list { display: none; }
    .mobile-toggle { display: block; }
    .nav-list.open {
        display: flex;
        flex-direction: column;
        position: absolute;
        top: var(--nav-height);
        left: 0;
        right: 0;
        background: rgba(255,255,255,0.98);
        backdrop-filter: blur(12px);
        padding: 20px 24px;
        gap: 16px;
        border-bottom: 1px solid var(--border);
        box-shadow: 0 12px 32px rgba(0,0,0,0.08);
    }
    .nav-list.open a { padding: 8px 0; }
    .nav-list.open .nav-cta { text-align: center; padding: 10px !important; }

    .hero { padding: 120px 0 60px; min-height: auto; }
    .hero-grid { grid-template-columns: 1fr; gap: 40px; }
    .hero h1 { font-size: 2.2rem; }
    .hero p { font-size: 1rem; }
    .hero-visual img { max-width: 100%; }
    .hero-stats { grid-template-columns: repeat(3, 1fr); gap: 16px; margin-top: 32px; }
    .stat-number { font-size: 1.4rem; }

    .section { padding: 56px 0; }
    .section-header h2 { font-size: 1.8rem; }
    .section-header { margin-bottom: 36px; }

    .feature-grid { grid-template-columns: 1fr; gap: 20px; }
    .category-grid { grid-template-columns: repeat(2, 1fr); gap: 16px; }
    .news-grid { grid-template-columns: 1fr; gap: 20px; }
    .news-card { flex-direction: column; }
    .news-card img { width: 100%; height: 160px; }

    .data-strip { grid-template-columns: repeat(2, 1fr); gap: 16px; }
    .steps-grid { grid-template-columns: 1fr; gap: 28px; }

    .cta-section { padding: 40px 24px; }
    .cta-section h2 { font-size: 1.6rem; }

    .footer-grid { grid-template-columns: 1fr; gap: 28px; }
    .footer-bottom { flex-direction: column; text-align: center; }
}
@media (max-width: 520px) {
    .container { padding: 0 16px; }
    .hero h1 { font-size: 1.8rem; }
    .category-grid { grid-template-columns: 1fr; }
    .data-strip { grid-template-columns: 1fr; }
    .hero-stats { grid-template-columns: 1fr; gap: 12px; }
}

/* roulang page: category1 */
/* ===== 设计变量 ===== */
        :root {
            --primary: #1a3a5c;
            --primary-light: #2a5a8c;
            --primary-dark: #0f2640;
            --accent: #e8a838;
            --accent-light: #f0c060;
            --accent-dark: #c88a20;
            --bg-body: #f8f7f4;
            --bg-white: #ffffff;
            --bg-card: #ffffff;
            --bg-dark: #1a2a3a;
            --bg-soft: #f0ede8;
            --text-primary: #1a2a3a;
            --text-body: #3a4a5a;
            --text-weak: #8a9aaa;
            --text-white: #f8f7f4;
            --text-accent: #e8a838;
            --border: #e8e4de;
            --border-light: #f0ede8;
            --radius: 12px;
            --radius-sm: 8px;
            --radius-lg: 20px;
            --shadow-sm: 0 2px 8px rgba(26, 42, 58, 0.06);
            --shadow: 0 8px 32px rgba(26, 42, 58, 0.08);
            --shadow-lg: 0 20px 60px rgba(26, 42, 58, 0.10);
            --transition: 0.35s cubic-bezier(0.4, 0, 0.2, 1);
            --font-sans: 'Inter', -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, 'Helvetica Neue', sans-serif;
            --container: 1200px;
            --nav-height: 72px;
        }

        /* ===== Reset ===== */
        *,
        *::before,
        *::after {
            box-sizing: border-box;
            margin: 0;
            padding: 0;
        }

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

        body {
            font-family: var(--font-sans);
            font-size: 16px;
            line-height: 1.6;
            color: var(--text-body);
            background: var(--bg-body);
        }

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

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

        button,
        input {
            font-family: inherit;
            font-size: inherit;
            border: none;
            outline: none;
            background: none;
        }

        ul,
        ol {
            list-style: none;
        }

        /* ===== 容器 ===== */
        .container {
            max-width: var(--container);
            margin: 0 auto;
            padding: 0 24px;
        }

        /* ===== 导航 ===== */
        .site-header {
            position: fixed;
            top: 0;
            left: 0;
            right: 0;
            z-index: 1000;
            height: var(--nav-height);
            background: rgba(255, 255, 255, 0.92);
            backdrop-filter: blur(16px);
            -webkit-backdrop-filter: blur(16px);
            border-bottom: 1px solid var(--border-light);
            transition: background var(--transition), box-shadow var(--transition);
        }

        .site-header.scrolled {
            background: rgba(255, 255, 255, 0.98);
            box-shadow: 0 1px 20px rgba(26, 42, 58, 0.06);
        }

        .header-inner {
            display: flex;
            align-items: center;
            justify-content: space-between;
            height: var(--nav-height);
            max-width: var(--container);
            margin: 0 auto;
            padding: 0 24px;
        }

        .logo {
            display: flex;
            align-items: center;
            gap: 10px;
            font-size: 22px;
            font-weight: 700;
            color: var(--primary);
            letter-spacing: -0.3px;
        }

        .logo i {
            color: var(--accent);
            font-size: 24px;
            transition: transform var(--transition);
        }

        .logo:hover i {
            transform: rotate(-8deg) scale(1.05);
        }

        .nav-list {
            display: flex;
            align-items: center;
            gap: 8px;
        }

        .nav-list a {
            position: relative;
            padding: 8px 18px;
            font-size: 15px;
            font-weight: 500;
            color: var(--text-body);
            border-radius: 100px;
            transition: color var(--transition), background var(--transition);
        }

        .nav-list a:hover {
            color: var(--primary);
            background: rgba(26, 58, 92, 0.06);
        }

        .nav-list a.active {
            color: var(--primary);
            background: rgba(26, 58, 92, 0.08);
            font-weight: 600;
        }

        .nav-list a.active::after {
            content: '';
            position: absolute;
            bottom: 2px;
            left: 50%;
            transform: translateX(-50%);
            width: 20px;
            height: 3px;
            background: var(--accent);
            border-radius: 4px;
        }

        .nav-list a.nav-cta {
            background: var(--accent);
            color: var(--primary-dark);
            padding: 8px 22px;
            font-weight: 600;
            margin-left: 8px;
            box-shadow: 0 2px 12px rgba(232, 168, 56, 0.25);
        }

        .nav-list a.nav-cta:hover {
            background: var(--accent-light);
            transform: translateY(-1px);
            box-shadow: 0 6px 24px rgba(232, 168, 56, 0.30);
        }

        .nav-list a.nav-cta i {
            margin-left: 6px;
            font-size: 13px;
            transition: transform var(--transition);
        }

        .nav-list a.nav-cta:hover i {
            transform: translateX(4px);
        }

        .menu-toggle {
            display: none;
            font-size: 24px;
            color: var(--primary);
            padding: 8px;
            cursor: pointer;
            background: none;
            border: none;
            border-radius: 8px;
            transition: background var(--transition);
        }

        .menu-toggle:hover {
            background: rgba(26, 58, 92, 0.06);
        }

        /* ===== 移动端导航 ===== */
        @media (max-width: 768px) {
            .menu-toggle {
                display: block;
            }

            .nav-list {
                position: fixed;
                top: var(--nav-height);
                left: 0;
                right: 0;
                background: rgba(255, 255, 255, 0.98);
                backdrop-filter: blur(16px);
                flex-direction: column;
                padding: 16px 24px 24px;
                gap: 4px;
                border-bottom: 1px solid var(--border);
                transform: translateY(-120%);
                opacity: 0;
                pointer-events: none;
                transition: transform 0.4s cubic-bezier(0.4, 0, 0.2, 1), opacity 0.3s ease;
                box-shadow: 0 20px 40px rgba(26, 42, 58, 0.08);
            }

            .nav-list.open {
                transform: translateY(0);
                opacity: 1;
                pointer-events: auto;
            }

            .nav-list a {
                width: 100%;
                padding: 12px 18px;
                font-size: 16px;
                border-radius: 8px;
            }

            .nav-list a.active::after {
                display: none;
            }

            .nav-list a.active {
                background: rgba(26, 58, 92, 0.08);
                border-left: 3px solid var(--accent);
            }

            .nav-list a.nav-cta {
                margin-left: 0;
                margin-top: 8px;
                text-align: center;
            }

            .header-inner {
                padding: 0 16px;
            }
        }

        @media (max-width: 480px) {
            .logo {
                font-size: 19px;
            }

            .logo i {
                font-size: 20px;
            }

            .nav-list {
                padding: 12px 16px 20px;
            }
        }

        /* ===== Hero / 分类横幅 ===== */
        .category-hero {
            padding: 140px 0 80px;
            background: linear-gradient(135deg, var(--primary-dark) 0%, var(--primary) 60%, var(--primary-light) 100%);
            position: relative;
            overflow: hidden;
            min-height: 420px;
            display: flex;
            align-items: center;
        }

        .category-hero::before {
            content: '';
            position: absolute;
            inset: 0;
            background: url('/assets/images/backpic/back-1.png') center/cover no-repeat;
            opacity: 0.15;
            mix-blend-mode: overlay;
        }

        .category-hero::after {
            content: '';
            position: absolute;
            bottom: -2px;
            left: 0;
            right: 0;
            height: 80px;
            background: var(--bg-body);
            clip-path: ellipse(70% 100% at 50% 100%);
        }

        .category-hero .container {
            position: relative;
            z-index: 2;
            text-align: center;
        }

        .category-hero .breadcrumb {
            display: flex;
            justify-content: center;
            align-items: center;
            gap: 8px;
            font-size: 14px;
            color: rgba(255, 255, 255, 0.6);
            margin-bottom: 20px;
        }

        .category-hero .breadcrumb a {
            color: rgba(255, 255, 255, 0.7);
            transition: color var(--transition);
        }

        .category-hero .breadcrumb a:hover {
            color: var(--accent);
        }

        .category-hero .breadcrumb span {
            color: rgba(255, 255, 255, 0.4);
        }

        .category-hero h1 {
            font-size: 48px;
            font-weight: 800;
            color: var(--text-white);
            letter-spacing: -1px;
            margin-bottom: 16px;
            line-height: 1.2;
        }

        .category-hero h1 i {
            color: var(--accent);
            margin-right: 12px;
        }

        .category-hero .hero-sub {
            font-size: 18px;
            color: rgba(255, 255, 255, 0.8);
            max-width: 640px;
            margin: 0 auto 28px;
            line-height: 1.7;
        }

        .category-hero .hero-meta {
            display: flex;
            justify-content: center;
            align-items: center;
            gap: 24px;
            flex-wrap: wrap;
            font-size: 14px;
            color: rgba(255, 255, 255, 0.6);
        }

        .category-hero .hero-meta i {
            margin-right: 6px;
            color: var(--accent);
        }

        @media (max-width: 768px) {
            .category-hero {
                padding: 120px 0 60px;
                min-height: 340px;
            }

            .category-hero h1 {
                font-size: 32px;
            }

            .category-hero .hero-sub {
                font-size: 16px;
            }

            .category-hero .hero-meta {
                gap: 16px;
                font-size: 13px;
            }
        }

        @media (max-width: 480px) {
            .category-hero h1 {
                font-size: 26px;
            }

            .category-hero .hero-sub {
                font-size: 14px;
            }

            .category-hero .hero-meta {
                flex-direction: column;
                gap: 8px;
            }
        }

        /* ===== 板块通用 ===== */
        .section {
            padding: 80px 0;
        }

        .section-header {
            text-align: center;
            margin-bottom: 48px;
        }

        .section-header .tag {
            display: inline-block;
            padding: 4px 16px;
            background: rgba(232, 168, 56, 0.12);
            color: var(--accent-dark);
            font-size: 13px;
            font-weight: 600;
            border-radius: 100px;
            letter-spacing: 0.5px;
            margin-bottom: 12px;
        }

        .section-header h2 {
            font-size: 34px;
            font-weight: 700;
            color: var(--text-primary);
            letter-spacing: -0.5px;
            margin-bottom: 12px;
            line-height: 1.25;
        }

        .section-header p {
            font-size: 17px;
            color: var(--text-weak);
            max-width: 580px;
            margin: 0 auto;
            line-height: 1.7;
        }

        @media (max-width: 768px) {
            .section {
                padding: 56px 0;
            }

            .section-header {
                margin-bottom: 32px;
            }

            .section-header h2 {
                font-size: 26px;
            }

            .section-header p {
                font-size: 15px;
            }
        }

        @media (max-width: 480px) {
            .section {
                padding: 40px 0;
            }

            .section-header h2 {
                font-size: 22px;
            }
        }

        /* ===== 分类介绍板块 ===== */
        .intro-grid {
            display: grid;
            grid-template-columns: 1fr 1fr;
            gap: 48px;
            align-items: center;
        }

        .intro-image {
            border-radius: var(--radius-lg);
            overflow: hidden;
            box-shadow: var(--shadow);
            aspect-ratio: 4/3;
            background: var(--bg-soft);
        }

        .intro-image img {
            width: 100%;
            height: 100%;
            object-fit: cover;
            transition: transform 0.6s ease;
        }

        .intro-image:hover img {
            transform: scale(1.03);
        }

        .intro-content h3 {
            font-size: 28px;
            font-weight: 700;
            color: var(--text-primary);
            margin-bottom: 16px;
            line-height: 1.3;
        }

        .intro-content p {
            font-size: 16px;
            line-height: 1.8;
            color: var(--text-body);
            margin-bottom: 16px;
        }

        .intro-content .highlight-list {
            display: grid;
            gap: 12px;
            margin-top: 20px;
        }

        .intro-content .highlight-item {
            display: flex;
            align-items: flex-start;
            gap: 12px;
            font-size: 15px;
            color: var(--text-body);
        }

        .intro-content .highlight-item i {
            color: var(--accent);
            font-size: 18px;
            margin-top: 2px;
            flex-shrink: 0;
        }

        @media (max-width: 768px) {
            .intro-grid {
                grid-template-columns: 1fr;
                gap: 32px;
            }

            .intro-content h3 {
                font-size: 24px;
            }

            .intro-image {
                aspect-ratio: 16/9;
            }
        }

        /* ===== 卡片网格 ===== */
        .card-grid {
            display: grid;
            grid-template-columns: repeat(3, 1fr);
            gap: 24px;
        }

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

        .card-item:hover {
            transform: translateY(-4px);
            box-shadow: var(--shadow);
        }

        .card-item .card-image {
            aspect-ratio: 16/10;
            overflow: hidden;
            background: var(--bg-soft);
        }

        .card-item .card-image img {
            width: 100%;
            height: 100%;
            object-fit: cover;
            transition: transform 0.5s ease;
        }

        .card-item:hover .card-image img {
            transform: scale(1.05);
        }

        .card-item .card-body {
            padding: 20px 22px 24px;
        }

        .card-item .card-tag {
            display: inline-block;
            padding: 2px 12px;
            background: rgba(232, 168, 56, 0.10);
            color: var(--accent-dark);
            font-size: 12px;
            font-weight: 600;
            border-radius: 100px;
            margin-bottom: 10px;
        }

        .card-item .card-title {
            font-size: 18px;
            font-weight: 600;
            color: var(--text-primary);
            margin-bottom: 8px;
            line-height: 1.4;
            transition: color var(--transition);
        }

        .card-item:hover .card-title {
            color: var(--primary-light);
        }

        .card-item .card-desc {
            font-size: 14px;
            color: var(--text-weak);
            line-height: 1.7;
            margin-bottom: 14px;
        }

        .card-item .card-meta {
            display: flex;
            align-items: center;
            gap: 16px;
            font-size: 13px;
            color: var(--text-weak);
        }

        .card-item .card-meta i {
            margin-right: 4px;
            color: var(--accent);
        }

        @media (max-width: 1024px) {
            .card-grid {
                grid-template-columns: repeat(2, 1fr);
                gap: 20px;
            }
        }

        @media (max-width: 600px) {
            .card-grid {
                grid-template-columns: 1fr;
                gap: 18px;
            }

            .card-item .card-body {
                padding: 16px 18px 20px;
            }

            .card-item .card-title {
                font-size: 16px;
            }
        }

        /* ===== 特色亮点 ===== */
        .features-grid {
            display: grid;
            grid-template-columns: repeat(3, 1fr);
            gap: 28px;
        }

        .feature-card {
            text-align: center;
            padding: 40px 28px;
            background: var(--bg-white);
            border-radius: var(--radius);
            border: 1px solid var(--border-light);
            box-shadow: var(--shadow-sm);
            transition: transform var(--transition), box-shadow var(--transition);
        }

        .feature-card:hover {
            transform: translateY(-4px);
            box-shadow: var(--shadow);
        }

        .feature-card .icon-wrap {
            width: 64px;
            height: 64px;
            border-radius: 50%;
            background: rgba(232, 168, 56, 0.10);
            display: flex;
            align-items: center;
            justify-content: center;
            margin: 0 auto 18px;
            font-size: 28px;
            color: var(--accent);
            transition: background var(--transition), transform var(--transition);
        }

        .feature-card:hover .icon-wrap {
            background: rgba(232, 168, 56, 0.18);
            transform: scale(1.05);
        }

        .feature-card h4 {
            font-size: 20px;
            font-weight: 600;
            color: var(--text-primary);
            margin-bottom: 10px;
        }

        .feature-card p {
            font-size: 14px;
            color: var(--text-weak);
            line-height: 1.7;
        }

        @media (max-width: 768px) {
            .features-grid {
                grid-template-columns: 1fr 1fr;
                gap: 20px;
            }

            .feature-card {
                padding: 28px 20px;
            }

            .feature-card h4 {
                font-size: 17px;
            }
        }

        @media (max-width: 480px) {
            .features-grid {
                grid-template-columns: 1fr;
                gap: 16px;
            }
        }

        /* ===== 流程/步骤 ===== */
        .steps-grid {
            display: grid;
            grid-template-columns: repeat(4, 1fr);
            gap: 24px;
            counter-reset: step;
        }

        .step-card {
            text-align: center;
            padding: 32px 20px;
            background: var(--bg-white);
            border-radius: var(--radius);
            border: 1px solid var(--border-light);
            position: relative;
            box-shadow: var(--shadow-sm);
            transition: transform var(--transition), box-shadow var(--transition);
        }

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

        .step-card .step-num {
            width: 48px;
            height: 48px;
            border-radius: 50%;
            background: var(--primary);
            color: var(--text-white);
            display: flex;
            align-items: center;
            justify-content: center;
            font-size: 20px;
            font-weight: 700;
            margin: 0 auto 16px;
            transition: background var(--transition), transform var(--transition);
        }

        .step-card:hover .step-num {
            background: var(--accent);
            color: var(--primary-dark);
            transform: scale(1.08);
        }

        .step-card h5 {
            font-size: 17px;
            font-weight: 600;
            color: var(--text-primary);
            margin-bottom: 8px;
        }

        .step-card p {
            font-size: 13px;
            color: var(--text-weak);
            line-height: 1.7;
        }

        @media (max-width: 900px) {
            .steps-grid {
                grid-template-columns: repeat(2, 1fr);
                gap: 18px;
            }
        }

        @media (max-width: 480px) {
            .steps-grid {
                grid-template-columns: 1fr;
                gap: 16px;
            }

            .step-card {
                padding: 24px 16px;
            }
        }

        /* ===== FAQ ===== */
        .faq-list {
            max-width: 780px;
            margin: 0 auto;
            display: grid;
            gap: 12px;
        }

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

        .faq-item:hover {
            box-shadow: var(--shadow-sm);
        }

        .faq-question {
            padding: 18px 24px;
            display: flex;
            justify-content: space-between;
            align-items: center;
            cursor: pointer;
            font-size: 16px;
            font-weight: 500;
            color: var(--text-primary);
            transition: color var(--transition);
            user-select: none;
        }

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

        .faq-question i {
            font-size: 18px;
            color: var(--accent);
            transition: transform 0.3s ease;
        }

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

        .faq-answer {
            max-height: 0;
            overflow: hidden;
            transition: max-height 0.4s ease, padding 0.3s ease;
            padding: 0 24px;
            font-size: 15px;
            color: var(--text-body);
            line-height: 1.8;
        }

        .faq-item.open .faq-answer {
            max-height: 200px;
            padding: 0 24px 20px;
        }

        @media (max-width: 600px) {
            .faq-question {
                padding: 14px 16px;
                font-size: 14px;
            }

            .faq-answer {
                font-size: 14px;
            }

            .faq-item.open .faq-answer {
                padding: 0 16px 16px;
            }
        }

        /* ===== CTA ===== */
        .cta-section {
            background: linear-gradient(135deg, var(--primary-dark) 0%, var(--primary) 100%);
            padding: 80px 0;
            text-align: center;
            position: relative;
            overflow: hidden;
        }

        .cta-section::before {
            content: '';
            position: absolute;
            inset: 0;
            background: url('/assets/images/backpic/back-2.png') center/cover no-repeat;
            opacity: 0.08;
            mix-blend-mode: overlay;
        }

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

        .cta-section h2 {
            font-size: 36px;
            font-weight: 700;
            color: var(--text-white);
            margin-bottom: 12px;
            letter-spacing: -0.5px;
        }

        .cta-section p {
            font-size: 17px;
            color: rgba(255, 255, 255, 0.8);
            max-width: 520px;
            margin: 0 auto 28px;
        }

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

        .btn {
            display: inline-flex;
            align-items: center;
            gap: 8px;
            padding: 14px 32px;
            font-size: 16px;
            font-weight: 600;
            border-radius: 100px;
            transition: all var(--transition);
            cursor: pointer;
        }

        .btn-primary {
            background: var(--accent);
            color: var(--primary-dark);
            box-shadow: 0 4px 20px rgba(232, 168, 56, 0.30);
        }

        .btn-primary:hover {
            background: var(--accent-light);
            transform: translateY(-2px);
            box-shadow: 0 8px 32px rgba(232, 168, 56, 0.35);
        }

        .btn-outline {
            background: transparent;
            color: var(--text-white);
            border: 2px solid rgba(255, 255, 255, 0.25);
        }

        .btn-outline:hover {
            border-color: var(--accent);
            color: var(--accent);
            transform: translateY(-2px);
        }

        @media (max-width: 768px) {
            .cta-section {
                padding: 56px 0;
            }

            .cta-section h2 {
                font-size: 26px;
            }

            .cta-section p {
                font-size: 15px;
            }

            .btn {
                padding: 12px 26px;
                font-size: 15px;
            }
        }

        /* ===== 页脚 ===== */
        .site-footer {
            background: var(--bg-dark);
            color: rgba(255, 255, 255, 0.8);
            padding: 60px 0 0;
        }

        .footer-grid {
            display: grid;
            grid-template-columns: 2fr 1fr 1fr 1.5fr;
            gap: 40px;
            padding-bottom: 40px;
            border-bottom: 1px solid rgba(255, 255, 255, 0.08);
        }

        .footer-brand .logo {
            color: var(--text-white);
            font-size: 22px;
            margin-bottom: 14px;
            display: inline-flex;
        }

        .footer-brand .logo i {
            color: var(--accent);
        }

        .footer-brand p {
            font-size: 14px;
            line-height: 1.8;
            opacity: 0.7;
            max-width: 320px;
        }

        .footer-col h4 {
            font-size: 15px;
            font-weight: 600;
            color: var(--text-white);
            margin-bottom: 16px;
            letter-spacing: 0.5px;
        }

        .footer-col a {
            display: block;
            font-size: 14px;
            padding: 6px 0;
            opacity: 0.7;
            transition: opacity var(--transition), color var(--transition);
        }

        .footer-col a:hover {
            opacity: 1;
            color: var(--accent);
        }

        .footer-social {
            display: flex;
            gap: 12px;
        }

        .footer-social a {
            width: 40px;
            height: 40px;
            border-radius: 50%;
            background: rgba(255, 255, 255, 0.06);
            display: flex;
            align-items: center;
            justify-content: center;
            font-size: 18px;
            opacity: 0.8;
            padding: 0;
            transition: background var(--transition), opacity var(--transition), transform var(--transition);
        }

        .footer-social a:hover {
            background: var(--accent);
            color: var(--primary-dark);
            opacity: 1;
            transform: translateY(-2px);
        }

        .footer-bottom {
            display: flex;
            justify-content: space-between;
            align-items: center;
            padding: 20px 0;
            font-size: 13px;
            opacity: 0.5;
            flex-wrap: wrap;
            gap: 8px;
        }

        @media (max-width: 768px) {
            .footer-grid {
                grid-template-columns: 1fr 1fr;
                gap: 32px;
            }

            .footer-brand {
                grid-column: 1 / -1;
            }

            .footer-brand p {
                max-width: 100%;
            }

            .footer-bottom {
                flex-direction: column;
                text-align: center;
            }
        }

        @media (max-width: 480px) {
            .footer-grid {
                grid-template-columns: 1fr;
                gap: 24px;
            }

            .site-footer {
                padding: 40px 0 0;
            }
        }

        /* ===== 工具类 ===== */
        .bg-soft {
            background: var(--bg-soft);
        }

        .bg-white {
            background: var(--bg-white);
        }

        .text-center {
            text-align: center;
        }

        .mb-12 {
            margin-bottom: 12px;
        }

        .mb-24 {
            margin-bottom: 24px;
        }

        .gap-16 {
            gap: 16px;
        }

        /* ===== 页面内联 ===== */
        .category-hero h1 i.fa-compass {
            color: var(--accent);
        }

        @media (max-width: 1024px) {
            .container {
                padding: 0 20px;
            }
        }

        @media (max-width: 480px) {
            .container {
                padding: 0 14px;
            }
        }

/* roulang page: article */
/* ===== Design Variables ===== */
        :root {
            --primary: #0a7e6f;
            --primary-light: #0f9b8a;
            --primary-dark: #065f54;
            --primary-bg: #e8f5f2;
            --secondary: #f7a41e;
            --secondary-light: #fbb84d;
            --accent: #1e2a4a;
            --bg: #ffffff;
            --bg-alt: #f6f9fc;
            --bg-card: #ffffff;
            --text: #1a2332;
            --text-light: #5a6a7e;
            --text-lighter: #8a9aaa;
            --border: #e2e9f0;
            --radius-sm: 6px;
            --radius-md: 12px;
            --radius-lg: 20px;
            --shadow-sm: 0 2px 8px rgba(0, 0, 0, 0.04);
            --shadow-md: 0 8px 30px rgba(0, 0, 0, 0.07);
            --shadow-lg: 0 20px 50px rgba(0, 0, 0, 0.10);
            --transition: all 0.3s cubic-bezier(0.25, 0.46, 0.45, 0.94);
            --font-sans: 'Inter', -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, 'Helvetica Neue', Arial, 'Noto Sans SC', sans-serif;
            --container: 1200px;
            --nav-height: 72px;
        }

        /* ===== Reset & Base ===== */
        *,
        *::before,
        *::after {
            box-sizing: border-box;
            margin: 0;
            padding: 0;
        }
        html {
            scroll-behavior: smooth;
            -webkit-font-smoothing: antialiased;
        }
        body {
            font-family: var(--font-sans);
            font-size: 16px;
            line-height: 1.7;
            color: var(--text);
            background: var(--bg);
        }
        a {
            color: var(--primary);
            text-decoration: none;
            transition: var(--transition);
        }
        a:hover {
            color: var(--primary-dark);
        }
        img {
            max-width: 100%;
            height: auto;
            display: block;
            border-radius: var(--radius-md);
        }
        button,
        input,
        textarea {
            font-family: inherit;
            font-size: inherit;
            outline: none;
            border: none;
        }
        ul,
        ol {
            list-style: none;
        }
        h1,
        h2,
        h3,
        h4,
        h5,
        h6 {
            line-height: 1.3;
            font-weight: 700;
            color: var(--accent);
        }
        h1 {
            font-size: 2.4rem;
        }
        h2 {
            font-size: 2rem;
        }
        h3 {
            font-size: 1.4rem;
        }
        h4 {
            font-size: 1.15rem;
        }
        p {
            color: var(--text-light);
            margin-bottom: 1rem;
        }
        .container {
            max-width: var(--container);
            margin: 0 auto;
            padding: 0 24px;
        }

        /* ===== Header & Navigation ===== */
        .site-header {
            position: fixed;
            top: 0;
            left: 0;
            width: 100%;
            height: var(--nav-height);
            background: rgba(255, 255, 255, 0.92);
            backdrop-filter: blur(18px);
            -webkit-backdrop-filter: blur(18px);
            border-bottom: 1px solid var(--border);
            z-index: 1000;
            transition: var(--transition);
        }
        .site-header .container {
            display: flex;
            align-items: center;
            justify-content: space-between;
            height: 100%;
        }
        .logo {
            display: flex;
            align-items: center;
            gap: 10px;
            font-size: 1.5rem;
            font-weight: 800;
            color: var(--primary);
            letter-spacing: -0.5px;
        }
        .logo i {
            font-size: 1.6rem;
            color: var(--secondary);
        }
        .logo:hover {
            color: var(--primary-dark);
        }
        .nav-list {
            display: flex;
            align-items: center;
            gap: 8px;
        }
        .nav-list a {
            position: relative;
            padding: 8px 18px;
            font-size: 0.95rem;
            font-weight: 500;
            color: var(--text-light);
            border-radius: 50px;
            transition: var(--transition);
        }
        .nav-list a:hover {
            color: var(--primary);
            background: var(--primary-bg);
        }
        .nav-list a.active {
            color: var(--primary);
            background: var(--primary-bg);
            font-weight: 600;
        }
        .nav-list a.active::after {
            content: '';
            position: absolute;
            bottom: 4px;
            left: 50%;
            transform: translateX(-50%);
            width: 20px;
            height: 3px;
            background: var(--primary);
            border-radius: 4px;
        }
        .nav-list a.nav-cta {
            background: var(--primary);
            color: #fff;
            padding: 8px 22px;
            font-weight: 600;
            display: flex;
            align-items: center;
            gap: 8px;
        }
        .nav-list a.nav-cta:hover {
            background: var(--primary-dark);
            transform: translateY(-1px);
            box-shadow: var(--shadow-sm);
        }
        .nav-toggle {
            display: none;
            background: none;
            font-size: 1.5rem;
            color: var(--text);
            cursor: pointer;
            padding: 8px;
            border-radius: var(--radius-sm);
        }
        .nav-toggle:hover {
            background: var(--bg-alt);
        }

        /* ===== Hero Banner ===== */
        .article-hero {
            margin-top: var(--nav-height);
            padding: 60px 0 50px;
            background: var(--bg-alt);
            background-image: linear-gradient(135deg, var(--primary-bg) 0%, #f0f7f5 100%);
            border-bottom: 1px solid var(--border);
        }
        .article-hero .container {
            display: flex;
            flex-direction: column;
            gap: 16px;
        }
        .article-hero .breadcrumb {
            display: flex;
            align-items: center;
            gap: 10px;
            font-size: 0.9rem;
            color: var(--text-lighter);
        }
        .article-hero .breadcrumb a {
            color: var(--text-lighter);
        }
        .article-hero .breadcrumb a:hover {
            color: var(--primary);
        }
        .article-hero .breadcrumb .sep {
            color: var(--border);
        }
        .article-hero .meta-line {
            display: flex;
            flex-wrap: wrap;
            align-items: center;
            gap: 16px 24px;
            margin-top: 4px;
        }
        .article-hero .meta-line span {
            font-size: 0.9rem;
            color: var(--text-lighter);
            display: flex;
            align-items: center;
            gap: 6px;
        }
        .article-hero .meta-line .badge {
            background: var(--primary);
            color: #fff;
            padding: 4px 14px;
            border-radius: 50px;
            font-size: 0.8rem;
            font-weight: 600;
        }

        /* ===== Article Content ===== */
        .article-main {
            padding: 50px 0 70px;
        }
        .article-main .container {
            display: grid;
            grid-template-columns: 1fr 320px;
            gap: 48px;
        }
        .article-body {
            background: var(--bg-card);
            border-radius: var(--radius-lg);
            padding: 40px 44px;
            box-shadow: var(--shadow-sm);
            border: 1px solid var(--border);
        }
        .article-body h1 {
            font-size: 2rem;
            margin-bottom: 12px;
            color: var(--accent);
        }
        .article-body .lead {
            font-size: 1.1rem;
            color: var(--text-light);
            margin-bottom: 28px;
            padding-bottom: 28px;
            border-bottom: 1px solid var(--border);
            line-height: 1.8;
        }
        .article-body .content-body {
            font-size: 1.05rem;
            line-height: 1.9;
            color: var(--text);
        }
        .article-body .content-body p {
            margin-bottom: 1.4rem;
        }
        .article-body .content-body img {
            margin: 24px 0;
            border-radius: var(--radius-md);
            box-shadow: var(--shadow-sm);
        }
        .article-body .content-body blockquote {
            border-left: 4px solid var(--primary);
            background: var(--primary-bg);
            padding: 16px 24px;
            margin: 24px 0;
            border-radius: 0 var(--radius-sm) var(--radius-sm) 0;
            color: var(--text-light);
            font-style: italic;
        }
        .article-body .content-body ul,
        .article-body .content-body ol {
            margin: 16px 0 16px 24px;
            color: var(--text-light);
        }
        .article-body .content-body li {
            margin-bottom: 8px;
            list-style: disc;
        }
        .article-body .content-body h2,
        .article-body .content-body h3 {
            margin-top: 36px;
            margin-bottom: 16px;
        }
        .article-body .content-body a {
            color: var(--primary);
            text-decoration: underline;
            text-underline-offset: 2px;
        }
        .article-body .content-body a:hover {
            color: var(--primary-dark);
        }
        .article-body .tags {
            display: flex;
            flex-wrap: wrap;
            gap: 10px;
            margin-top: 36px;
            padding-top: 24px;
            border-top: 1px solid var(--border);
        }
        .article-body .tags .tag {
            background: var(--bg-alt);
            color: var(--text-light);
            padding: 6px 16px;
            border-radius: 50px;
            font-size: 0.85rem;
            font-weight: 500;
            transition: var(--transition);
            border: 1px solid var(--border);
        }
        .article-body .tags .tag:hover {
            background: var(--primary-bg);
            color: var(--primary);
            border-color: var(--primary);
        }
        .article-body .post-nav {
            display: flex;
            justify-content: space-between;
            gap: 24px;
            margin-top: 48px;
            padding-top: 28px;
            border-top: 2px solid var(--border);
        }
        .article-body .post-nav a {
            font-size: 0.95rem;
            font-weight: 500;
            color: var(--primary);
            display: flex;
            align-items: center;
            gap: 8px;
            max-width: 45%;
        }
        .article-body .post-nav a:hover {
            color: var(--primary-dark);
        }
        .article-body .post-nav a .dir {
            font-size: 0.8rem;
            color: var(--text-lighter);
            font-weight: 400;
            display: block;
        }

        /* ===== Sidebar ===== */
        .article-sidebar {
            display: flex;
            flex-direction: column;
            gap: 32px;
        }
        .sidebar-card {
            background: var(--bg-card);
            border-radius: var(--radius-lg);
            padding: 28px 24px;
            border: 1px solid var(--border);
            box-shadow: var(--shadow-sm);
        }
        .sidebar-card h4 {
            font-size: 1.05rem;
            margin-bottom: 16px;
            display: flex;
            align-items: center;
            gap: 10px;
            color: var(--accent);
        }
        .sidebar-card h4 i {
            color: var(--primary);
        }
        .sidebar-card .rel-list {
            display: flex;
            flex-direction: column;
            gap: 14px;
        }
        .sidebar-card .rel-list a {
            display: flex;
            gap: 12px;
            align-items: flex-start;
            padding: 8px 0;
            border-bottom: 1px solid var(--border);
            transition: var(--transition);
        }
        .sidebar-card .rel-list a:last-child {
            border-bottom: none;
        }
        .sidebar-card .rel-list a:hover {
            padding-left: 6px;
        }
        .sidebar-card .rel-list a .rel-thumb {
            width: 56px;
            height: 56px;
            border-radius: var(--radius-sm);
            background: var(--bg-alt);
            flex-shrink: 0;
            overflow: hidden;
            object-fit: cover;
        }
        .sidebar-card .rel-list a .rel-info {
            flex: 1;
            min-width: 0;
        }
        .sidebar-card .rel-list a .rel-info .rel-title {
            font-size: 0.9rem;
            font-weight: 600;
            color: var(--text);
            display: -webkit-box;
            -webkit-line-clamp: 2;
            -webkit-box-orient: vertical;
            overflow: hidden;
        }
        .sidebar-card .rel-list a .rel-info .rel-date {
            font-size: 0.78rem;
            color: var(--text-lighter);
            margin-top: 4px;
        }
        .sidebar-cta {
            background: var(--primary);
            color: #fff;
            text-align: center;
            padding: 32px 24px;
            border-radius: var(--radius-lg);
            background-image: linear-gradient(135deg, var(--primary) 0%, var(--primary-dark) 100%);
        }
        .sidebar-cta h4 {
            color: #fff;
            margin-bottom: 8px;
        }
        .sidebar-cta p {
            color: rgba(255, 255, 255, 0.85);
            font-size: 0.9rem;
            margin-bottom: 18px;
        }
        .sidebar-cta .btn-white {
            background: #fff;
            color: var(--primary);
            padding: 10px 28px;
            border-radius: 50px;
            font-weight: 600;
            display: inline-flex;
            align-items: center;
            gap: 8px;
            transition: var(--transition);
        }
        .sidebar-cta .btn-white:hover {
            background: var(--secondary);
            color: #fff;
            transform: translateY(-2px);
            box-shadow: var(--shadow-md);
        }

        /* ===== Not Found ===== */
        .not-found-box {
            text-align: center;
            padding: 80px 20px;
            background: var(--bg-card);
            border-radius: var(--radius-lg);
            border: 1px solid var(--border);
        }
        .not-found-box i {
            font-size: 3.6rem;
            color: var(--text-lighter);
            margin-bottom: 20px;
        }
        .not-found-box h2 {
            margin-bottom: 12px;
            color: var(--accent);
        }
        .not-found-box p {
            margin-bottom: 24px;
        }
        .not-found-box .btn-back {
            background: var(--primary);
            color: #fff;
            padding: 12px 32px;
            border-radius: 50px;
            font-weight: 600;
            display: inline-flex;
            align-items: center;
            gap: 8px;
            transition: var(--transition);
        }
        .not-found-box .btn-back:hover {
            background: var(--primary-dark);
            transform: translateY(-2px);
            box-shadow: var(--shadow-md);
        }

        /* ===== Footer ===== */
        .site-footer {
            background: var(--accent);
            color: rgba(255, 255, 255, 0.85);
            padding: 60px 0 30px;
            margin-top: 20px;
        }
        .site-footer .container {
            max-width: var(--container);
            margin: 0 auto;
            padding: 0 24px;
        }
        .footer-grid {
            display: grid;
            grid-template-columns: 2fr 1fr 1fr 1.4fr;
            gap: 40px;
            padding-bottom: 40px;
            border-bottom: 1px solid rgba(255, 255, 255, 0.10);
        }
        .footer-brand .logo {
            color: #fff;
            font-size: 1.4rem;
            margin-bottom: 14px;
        }
        .footer-brand .logo i {
            color: var(--secondary);
        }
        .footer-brand p {
            color: rgba(255, 255, 255, 0.65);
            font-size: 0.92rem;
            max-width: 300px;
            line-height: 1.7;
        }
        .footer-col h4 {
            color: #fff;
            font-size: 1rem;
            font-weight: 600;
            margin-bottom: 16px;
            letter-spacing: 0.3px;
        }
        .footer-col a {
            display: block;
            color: rgba(255, 255, 255, 0.65);
            font-size: 0.9rem;
            padding: 5px 0;
            transition: var(--transition);
        }
        .footer-col a:hover {
            color: var(--secondary);
            padding-left: 4px;
        }
        .footer-social {
            display: flex;
            gap: 12px;
            margin-top: 8px;
        }
        .footer-social a {
            width: 38px;
            height: 38px;
            border-radius: 50%;
            background: rgba(255, 255, 255, 0.08);
            display: flex;
            align-items: center;
            justify-content: center;
            color: rgba(255, 255, 255, 0.7);
            font-size: 1.1rem;
            padding: 0;
            transition: var(--transition);
        }
        .footer-social a:hover {
            background: var(--primary);
            color: #fff;
            padding: 0;
            transform: translateY(-2px);
        }
        .footer-bottom {
            display: flex;
            justify-content: space-between;
            align-items: center;
            padding-top: 28px;
            font-size: 0.85rem;
            color: rgba(255, 255, 255, 0.45);
            flex-wrap: wrap;
            gap: 12px;
        }
        .footer-bottom span {
            opacity: 0.8;
        }

        /* ===== Responsive ===== */
        @media (max-width: 1024px) {
            .article-main .container {
                grid-template-columns: 1fr 260px;
                gap: 32px;
            }
            .article-body {
                padding: 32px 28px;
            }
            .footer-grid {
                grid-template-columns: 1fr 1fr;
                gap: 32px;
            }
        }
        @media (max-width: 768px) {
            .nav-list {
                display: none;
                position: absolute;
                top: var(--nav-height);
                left: 0;
                width: 100%;
                background: rgba(255, 255, 255, 0.98);
                backdrop-filter: blur(18px);
                flex-direction: column;
                padding: 16px 24px 24px;
                border-bottom: 1px solid var(--border);
                box-shadow: var(--shadow-md);
                gap: 4px;
            }
            .nav-list.open {
                display: flex;
            }
            .nav-list a {
                padding: 12px 18px;
                width: 100%;
                border-radius: var(--radius-sm);
            }
            .nav-list a.active::after {
                display: none;
            }
            .nav-list a.nav-cta {
                justify-content: center;
                margin-top: 6px;
            }
            .nav-toggle {
                display: block;
            }
            .article-hero {
                padding: 40px 0 30px;
            }
            .article-hero h1 {
                font-size: 1.6rem;
            }
            .article-main .container {
                grid-template-columns: 1fr;
                gap: 32px;
            }
            .article-body {
                padding: 24px 18px;
            }
            .article-body h1 {
                font-size: 1.5rem;
            }
            .article-body .post-nav {
                flex-direction: column;
                gap: 16px;
            }
            .article-body .post-nav a {
                max-width: 100%;
            }
            .footer-grid {
                grid-template-columns: 1fr;
                gap: 28px;
            }
            .footer-bottom {
                flex-direction: column;
                text-align: center;
            }
            h1 {
                font-size: 1.8rem;
            }
            h2 {
                font-size: 1.5rem;
            }
        }
        @media (max-width: 520px) {
            .container {
                padding: 0 16px;
            }
            .article-hero .meta-line {
                gap: 10px 16px;
            }
            .article-body {
                padding: 18px 14px;
            }
            .sidebar-card {
                padding: 20px 16px;
            }
        }

        /* ===== Focus & Accessibility ===== */
        a:focus-visible,
        button:focus-visible,
        input:focus-visible {
            outline: 2px solid var(--primary);
            outline-offset: 3px;
        }
        ::selection {
            background: var(--primary);
            color: #fff;
        }