/* roulang page: index */
:root {
  --primary: #0a0e27;
  --primary-light: #1a1040;
  --secondary: #ffd700;
  --secondary-hover: #ffed4a;
  --accent: #ff6b00;
  --accent-hover: #ff8c00;
  --bg-dark: #0a0e27;
  --bg-card: #131742;
  --bg-card-hover: #1c2155;
  --bg-section: #0f1338;
  --text-primary: #ffffff;
  --text-secondary: #c8cce5;
  --text-muted: #7a7faa;
  --border-color: rgba(255, 215, 0, 0.15);
  --border-glow: rgba(255, 215, 0, 0.3);
  --radius-sm: 8px;
  --radius-md: 14px;
  --radius-lg: 20px;
  --shadow-sm: 0 4px 20px rgba(0,0,0,0.3);
  --shadow-md: 0 8px 40px rgba(0,0,0,0.4);
  --shadow-lg: 0 16px 60px rgba(0,0,0,0.5);
  --shadow-glow: 0 0 30px rgba(255, 215, 0, 0.1);
  --font-family: 'Inter', -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, Helvetica, Arial, sans-serif;
  --max-width: 1200px;
  --header-height: 72px;
  --transition: all 0.3s cubic-bezier(0.4, 0, 0.2, 1);
}
*, *::before, *::after { box-sizing: border-box; margin: 0; padding: 0; }
html { scroll-behavior: smooth; }
body { font-family: var(--font-family); background: var(--bg-dark); color: var(--text-primary); line-height: 1.6; -webkit-font-smoothing: antialiased; }
a { color: var(--secondary); text-decoration: none; transition: var(--transition); }
a:hover { color: var(--secondary-hover); }
img { max-width: 100%; height: auto; display: block; }
ul, ol { list-style: none; }
button, input, textarea { font-family: inherit; border: none; outline: none; }
.container { width: 100%; max-width: var(--max-width); margin: 0 auto; padding: 0 24px; }
.section-padding { padding: 100px 0; }
.section-title { font-size: 2.8rem; font-weight: 800; line-height: 1.2; margin-bottom: 16px; letter-spacing: -0.5px; }
.section-subtitle { font-size: 1.1rem; color: var(--text-secondary); max-width: 600px; line-height: 1.7; }
.text-center { text-align: center; }
.text-gold { color: var(--secondary); }
.text-accent { color: var(--accent); }
.bg-gradient { background: linear-gradient(135deg, var(--bg-dark), var(--primary-light)); }
.glow-line { width: 60px; height: 4px; background: linear-gradient(90deg, var(--secondary), var(--accent)); border-radius: 4px; margin: 0 auto 24px; }
.section-header { text-align: center; margin-bottom: 60px; }
.section-header .section-subtitle { margin: 0 auto; }

/* Header & Navigation */
.header { position: fixed; top: 0; left: 0; right: 0; z-index: 1000; background: rgba(10, 14, 39, 0.92); backdrop-filter: blur(20px); border-bottom: 1px solid var(--border-color); height: var(--header-height); transition: var(--transition); }
.header.scrolled { background: rgba(10, 14, 39, 0.98); box-shadow: var(--shadow-md); }
.header-inner { display: flex; align-items: center; justify-content: space-between; height: var(--header-height); }
.logo { font-size: 1.5rem; font-weight: 800; color: var(--text-primary); display: flex; align-items: center; gap: 10px; }
.logo i { color: var(--secondary); font-size: 1.8rem; }
.logo span { background: linear-gradient(90deg, var(--secondary), var(--accent)); -webkit-background-clip: text; -webkit-text-fill-color: transparent; background-clip: text; }
.nav { display: flex; align-items: center; gap: 32px; }
.nav a { color: var(--text-secondary); font-size: 0.95rem; font-weight: 500; padding: 8px 0; position: relative; transition: var(--transition); }
.nav a::after { content: ''; position: absolute; bottom: 0; left: 0; width: 0; height: 2px; background: linear-gradient(90deg, var(--secondary), var(--accent)); transition: var(--transition); border-radius: 2px; }
.nav a:hover, .nav a.active { color: var(--text-primary); }
.nav a:hover::after, .nav a.active::after { width: 100%; }
.nav a.active { color: var(--secondary); }
.nav-cta { background: linear-gradient(135deg, var(--secondary), var(--accent)); color: var(--primary) !important; padding: 10px 28px !important; border-radius: 50px; font-weight: 700; font-size: 0.95rem; transition: var(--transition); box-shadow: 0 4px 20px rgba(255, 215, 0, 0.25); }
.nav-cta:hover { transform: translateY(-2px); box-shadow: 0 8px 30px rgba(255, 215, 0, 0.35); color: var(--primary) !important; }
.nav-cta::after { display: none !important; }
.hamburger { display: none; flex-direction: column; gap: 5px; cursor: pointer; padding: 4px; background: none; }
.hamburger span { width: 28px; height: 2.5px; background: var(--text-primary); border-radius: 4px; transition: var(--transition); }
.hamburger.active span:nth-child(1) { transform: rotate(45deg) translate(5px, 5px); }
.hamburger.active span:nth-child(2) { opacity: 0; }
.hamburger.active span:nth-child(3) { transform: rotate(-45deg) translate(5px, -5px); }

/* Hero */
.hero { position: relative; min-height: 100vh; display: flex; align-items: center; padding-top: var(--header-height); overflow: hidden; background: url('/assets/images/backpic/back-1.png') center center / cover no-repeat; }
.hero::before { content: ''; position: absolute; inset: 0; background: linear-gradient(135deg, rgba(10, 14, 39, 0.92) 0%, rgba(26, 16, 64, 0.8) 50%, rgba(10, 14, 39, 0.92) 100%); z-index: 1; }
.hero::after { content: ''; position: absolute; bottom: 0; left: 0; right: 0; height: 200px; background: linear-gradient(to top, var(--bg-dark), transparent); z-index: 1; }
.hero .container { position: relative; z-index: 2; padding-top: 40px; padding-bottom: 40px; }
.hero-content { max-width: 780px; }
.hero-badge { display: inline-flex; align-items: center; gap: 8px; background: rgba(255, 215, 0, 0.12); border: 1px solid rgba(255, 215, 0, 0.25); padding: 8px 20px; border-radius: 50px; font-size: 0.85rem; color: var(--secondary); margin-bottom: 28px; backdrop-filter: blur(10px); }
.hero-badge i { font-size: 0.9rem; }
.hero h1 { font-size: 4rem; font-weight: 900; line-height: 1.1; margin-bottom: 24px; letter-spacing: -1px; }
.hero h1 .highlight { background: linear-gradient(135deg, var(--secondary), var(--accent)); -webkit-background-clip: text; -webkit-text-fill-color: transparent; background-clip: text; }
.hero p { font-size: 1.2rem; color: var(--text-secondary); line-height: 1.8; margin-bottom: 40px; max-width: 600px; }
.hero-buttons { display: flex; gap: 16px; flex-wrap: wrap; }
.btn { display: inline-flex; align-items: center; gap: 10px; padding: 16px 36px; border-radius: 50px; font-weight: 700; font-size: 1rem; cursor: pointer; transition: var(--transition); text-align: center; }
.btn-primary { background: linear-gradient(135deg, var(--secondary), var(--accent)); color: var(--primary) !important; box-shadow: 0 4px 25px rgba(255, 215, 0, 0.3); }
.btn-primary:hover { transform: translateY(-3px); box-shadow: 0 10px 40px rgba(255, 215, 0, 0.4); }
.btn-outline { border: 2px solid rgba(255, 255, 255, 0.2); color: var(--text-primary) !important; background: rgba(255, 255, 255, 0.05); backdrop-filter: blur(10px); }
.btn-outline:hover { border-color: var(--secondary); background: rgba(255, 215, 0, 0.1); transform: translateY(-3px); }
.btn-lg { padding: 18px 44px; font-size: 1.1rem; }
.hero-stats { display: flex; gap: 48px; margin-top: 60px; padding-top: 40px; border-top: 1px solid rgba(255, 255, 255, 0.08); }
.hero-stat h3 { font-size: 2.4rem; font-weight: 800; background: linear-gradient(135deg, var(--secondary), var(--accent)); -webkit-background-clip: text; -webkit-text-fill-color: transparent; background-clip: text; }
.hero-stat p { font-size: 0.9rem; color: var(--text-muted); margin-top: 4px; }

/* Features */
.features { background: var(--bg-section); }
.features-grid { display: grid; grid-template-columns: repeat(3, 1fr); gap: 28px; }
.feature-card { background: var(--bg-card); border: 1px solid var(--border-color); border-radius: var(--radius-md); padding: 40px 32px; text-align: center; transition: var(--transition); }
.feature-card:hover { transform: translateY(-6px); border-color: var(--border-glow); box-shadow: var(--shadow-glow); background: var(--bg-card-hover); }
.feature-icon { width: 64px; height: 64px; border-radius: 16px; background: linear-gradient(135deg, rgba(255, 215, 0, 0.12), rgba(255, 107, 0, 0.12)); display: flex; align-items: center; justify-content: center; margin: 0 auto 20px; font-size: 1.6rem; color: var(--secondary); }
.feature-card h3 { font-size: 1.3rem; font-weight: 700; margin-bottom: 12px; }
.feature-card p { color: var(--text-secondary); font-size: 0.95rem; line-height: 1.7; }

/* Categories */
.categories-grid { display: grid; grid-template-columns: repeat(3, 1fr); gap: 24px; }
.category-card { position: relative; border-radius: var(--radius-md); overflow: hidden; height: 320px; display: flex; align-items: flex-end; cursor: pointer; transition: var(--transition); }
.category-card img { position: absolute; inset: 0; width: 100%; height: 100%; object-fit: cover; transition: var(--transition); }
.category-card::before { content: ''; position: absolute; inset: 0; background: linear-gradient(to top, rgba(10, 14, 39, 0.92) 0%, rgba(10, 14, 39, 0.2) 60%, transparent 100%); z-index: 1; }
.category-card:hover img { transform: scale(1.08); }
.category-card:hover { transform: translateY(-4px); box-shadow: var(--shadow-lg); }
.category-info { position: relative; z-index: 2; padding: 32px 28px; width: 100%; }
.category-info h3 { font-size: 1.4rem; font-weight: 700; margin-bottom: 6px; }
.category-info p { color: var(--text-secondary); font-size: 0.9rem; }
.category-tag { display: inline-block; padding: 4px 14px; border-radius: 50px; background: rgba(255, 215, 0, 0.15); color: var(--secondary); font-size: 0.75rem; font-weight: 600; margin-bottom: 12px; }

/* Stats Section */
.stats-section { background: linear-gradient(135deg, var(--primary-light), var(--bg-dark)); position: relative; overflow: hidden; }
.stats-section::before { content: ''; position: absolute; top: -50%; right: -20%; width: 500px; height: 500px; border-radius: 50%; background: radial-gradient(circle, rgba(255, 215, 0, 0.05), transparent); }
.stats-grid { display: grid; grid-template-columns: repeat(4, 1fr); gap: 32px; position: relative; z-index: 1; }
.stat-item { text-align: center; padding: 32px 16px; }
.stat-number { font-size: 3.2rem; font-weight: 900; background: linear-gradient(135deg, var(--secondary), var(--accent)); -webkit-background-clip: text; -webkit-text-fill-color: transparent; background-clip: text; line-height: 1.1; }
.stat-label { color: var(--text-secondary); font-size: 1rem; margin-top: 8px; font-weight: 500; }
.stat-divider { width: 40px; height: 2px; background: linear-gradient(90deg, var(--secondary), transparent); margin: 0 auto 12px; }

/* News / List */
.news { background: var(--bg-section); }
.news-grid { display: grid; grid-template-columns: repeat(2, 1fr); gap: 24px; }
.news-card { background: var(--bg-card); border: 1px solid var(--border-color); border-radius: var(--radius-md); overflow: hidden; transition: var(--transition); display: flex; flex-direction: column; }
.news-card:hover { transform: translateY(-4px); border-color: var(--border-glow); box-shadow: var(--shadow-glow); }
.news-card-img { height: 200px; overflow: hidden; }
.news-card-img img { width: 100%; height: 100%; object-fit: cover; transition: var(--transition); }
.news-card:hover .news-card-img img { transform: scale(1.05); }
.news-card-body { padding: 24px 28px; flex: 1; display: flex; flex-direction: column; }
.news-meta { display: flex; gap: 16px; align-items: center; margin-bottom: 12px; font-size: 0.8rem; color: var(--text-muted); }
.news-meta .cat { background: rgba(255, 215, 0, 0.12); color: var(--secondary); padding: 2px 12px; border-radius: 50px; font-weight: 600; }
.news-card-body h3 { font-size: 1.15rem; font-weight: 700; margin-bottom: 10px; line-height: 1.4; flex: 1; }
.news-card-body h3 a { color: var(--text-primary); }
.news-card-body h3 a:hover { color: var(--secondary); }
.news-card-body p { color: var(--text-secondary); font-size: 0.9rem; line-height: 1.6; margin-bottom: 16px; }
.news-read-more { color: var(--secondary); font-weight: 600; font-size: 0.9rem; display: inline-flex; align-items: center; gap: 6px; }
.news-empty { grid-column: 1 / -1; text-align: center; padding: 60px 20px; color: var(--text-muted); font-size: 1.1rem; background: var(--bg-card); border-radius: var(--radius-md); border: 1px dashed var(--border-color); }

/* Process / Steps */
.process { background: var(--bg-dark); }
.process-grid { display: grid; grid-template-columns: repeat(4, 1fr); gap: 24px; }
.process-step { text-align: center; padding: 32px 16px; position: relative; }
.process-step::after { content: '→'; position: absolute; right: -12px; top: 50%; transform: translateY(-50%); font-size: 1.8rem; color: var(--secondary); opacity: 0.4; }
.process-step:last-child::after { display: none; }
.step-number { width: 56px; height: 56px; border-radius: 50%; background: linear-gradient(135deg, var(--secondary), var(--accent)); color: var(--primary); font-size: 1.3rem; font-weight: 800; display: flex; align-items: center; justify-content: center; margin: 0 auto 20px; }
.process-step h3 { font-size: 1.1rem; font-weight: 700; margin-bottom: 8px; }
.process-step p { color: var(--text-secondary); font-size: 0.9rem; line-height: 1.6; }

/* FAQ */
.faq { background: var(--bg-section); }
.faq-list { max-width: 800px; margin: 0 auto; display: flex; flex-direction: column; gap: 12px; }
.faq-item { background: var(--bg-card); border: 1px solid var(--border-color); border-radius: var(--radius-md); overflow: hidden; transition: var(--transition); }
.faq-item.active { border-color: var(--border-glow); }
.faq-question { padding: 20px 28px; display: flex; justify-content: space-between; align-items: center; cursor: pointer; font-weight: 600; font-size: 1.05rem; transition: var(--transition); user-select: none; }
.faq-question:hover { color: var(--secondary); }
.faq-question i { transition: var(--transition); color: var(--secondary); font-size: 1.1rem; }
.faq-item.active .faq-question i { transform: rotate(180deg); }
.faq-answer { max-height: 0; overflow: hidden; transition: max-height 0.4s ease, padding 0.4s ease; padding: 0 28px; }
.faq-item.active .faq-answer { max-height: 300px; padding: 0 28px 20px; }
.faq-answer p { color: var(--text-secondary); font-size: 0.95rem; line-height: 1.7; }

/* CTA */
.cta-section { background: linear-gradient(135deg, var(--primary-light), var(--bg-dark)); position: relative; overflow: hidden; }
.cta-section::before { content: ''; position: absolute; top: -30%; left: -10%; width: 600px; height: 600px; border-radius: 50%; background: radial-gradient(circle, rgba(255, 215, 0, 0.06), transparent); }
.cta-content { text-align: center; position: relative; z-index: 1; max-width: 700px; margin: 0 auto; }
.cta-content h2 { font-size: 3rem; font-weight: 900; margin-bottom: 20px; }
.cta-content p { color: var(--text-secondary); font-size: 1.15rem; margin-bottom: 36px; line-height: 1.7; }
.cta-buttons { display: flex; gap: 16px; justify-content: center; flex-wrap: wrap; }

/* Footer */
.footer { background: var(--primary); border-top: 1px solid var(--border-color); padding: 60px 0 30px; }
.footer-inner { display: grid; grid-template-columns: 2fr 1fr 1fr 1fr; gap: 40px; padding-bottom: 40px; border-bottom: 1px solid rgba(255, 255, 255, 0.06); }
.footer-brand .logo { margin-bottom: 16px; }
.footer-brand p { color: var(--text-secondary); font-size: 0.9rem; line-height: 1.7; max-width: 320px; }
.footer-col h4 { font-size: 1rem; font-weight: 700; margin-bottom: 20px; color: var(--text-primary); }
.footer-col a { display: block; color: var(--text-secondary); font-size: 0.9rem; padding: 6px 0; transition: var(--transition); }
.footer-col a:hover { color: var(--secondary); padding-left: 4px; }
.footer-social { display: flex; gap: 12px; margin-top: 20px; }
.footer-social a { width: 40px; height: 40px; border-radius: 10px; background: rgba(255, 255, 255, 0.06); display: flex; align-items: center; justify-content: center; color: var(--text-secondary); transition: var(--transition); }
.footer-social a:hover { background: rgba(255, 215, 0, 0.12); color: var(--secondary); transform: translateY(-2px); }
.footer-bottom { text-align: center; padding-top: 30px; color: var(--text-muted); font-size: 0.85rem; }

/* Responsive */
@media (max-width: 1024px) {
  .features-grid { grid-template-columns: repeat(2, 1fr); }
  .categories-grid { grid-template-columns: repeat(2, 1fr); }
  .stats-grid { grid-template-columns: repeat(2, 1fr); }
  .process-grid { grid-template-columns: repeat(2, 1fr); }
  .process-step:nth-child(2)::after { display: none; }
  .footer-inner { grid-template-columns: repeat(2, 1fr); }
  .hero h1 { font-size: 3.2rem; }
}
@media (max-width: 768px) {
  .nav { display: none; position: fixed; top: var(--header-height); left: 0; right: 0; background: rgba(10, 14, 39, 0.98); backdrop-filter: blur(20px); flex-direction: column; padding: 24px 32px; gap: 16px; border-bottom: 1px solid var(--border-color); }
  .nav.open { display: flex; }
  .nav a { font-size: 1.1rem; padding: 12px 0; }
  .hamburger { display: flex; }
  .hero h1 { font-size: 2.4rem; }
  .hero p { font-size: 1rem; }
  .hero-stats { gap: 24px; flex-wrap: wrap; }
  .hero-stat h3 { font-size: 1.8rem; }
  .section-title { font-size: 2rem; }
  .features-grid { grid-template-columns: 1fr; }
  .categories-grid { grid-template-columns: 1fr; }
  .news-grid { grid-template-columns: 1fr; }
  .process-grid { grid-template-columns: 1fr; }
  .process-step::after { display: none; }
  .stats-grid { grid-template-columns: repeat(2, 1fr); gap: 16px; }
  .footer-inner { grid-template-columns: 1fr; gap: 32px; }
  .cta-content h2 { font-size: 2rem; }
  .section-padding { padding: 60px 0; }
  .hero-buttons .btn { width: 100%; justify-content: center; }
}
@media (max-width: 520px) {
  .hero h1 { font-size: 1.8rem; }
  .container { padding: 0 16px; }
  .stat-number { font-size: 2.2rem; }
  .hero-stats { flex-direction: column; gap: 16px; }
  .news-card-body { padding: 18px 20px; }
}

/* roulang page: category1 */
/* ===== Design Variables ===== */
        :root {
            --primary: #e63946;
            --primary-dark: #c1121f;
            --primary-light: #ff6b6b;
            --secondary: #1d3557;
            --secondary-light: #2a4a7f;
            --accent: #f4a261;
            --accent-light: #f9c78a;
            --dark: #0d1b2a;
            --dark-card: #1b2a41;
            --bg: #f8f9fa;
            --bg-alt: #e9ecef;
            --text: #1a1a2e;
            --text-light: #6c757d;
            --text-white: #ffffff;
            --border: #dee2e6;
            --radius: 16px;
            --radius-sm: 10px;
            --radius-lg: 24px;
            --shadow: 0 8px 32px rgba(0, 0, 0, 0.08);
            --shadow-hover: 0 16px 48px rgba(0, 0, 0, 0.14);
            --shadow-dark: 0 8px 32px rgba(0, 0, 0, 0.25);
            --transition: 0.3s cubic-bezier(0.25, 0.46, 0.45, 0.94);
            --font: 'Segoe UI', 'PingFang SC', 'Microsoft YaHei', system-ui, -apple-system, sans-serif;
            --container: 1200px;
            --nav-height: 72px;
        }

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

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

        body {
            font-family: var(--font);
            font-size: 16px;
            line-height: 1.7;
            color: var(--text);
            background: var(--bg);
            -webkit-font-smoothing: antialiased;
            -moz-osx-font-smoothing: grayscale;
        }

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

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

        a:hover {
            color: var(--primary-dark);
        }

        a:focus-visible {
            outline: 3px solid var(--primary);
            outline-offset: 2px;
            border-radius: 4px;
        }

        button,
        input,
        textarea {
            font-family: var(--font);
            font-size: 1rem;
            border: none;
            outline: none;
        }

        button {
            cursor: pointer;
        }

        ul,
        ol {
            list-style: none;
        }

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

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

        /* ===== Header & Navigation ===== */
        .header {
            position: fixed;
            top: 0;
            left: 0;
            right: 0;
            z-index: 1000;
            background: rgba(13, 27, 42, 0.92);
            backdrop-filter: blur(16px);
            -webkit-backdrop-filter: blur(16px);
            border-bottom: 1px solid rgba(255, 255, 255, 0.06);
            height: var(--nav-height);
            transition: var(--transition);
        }

        .header.scrolled {
            background: rgba(13, 27, 42, 0.98);
            box-shadow: 0 2px 24px rgba(0, 0, 0, 0.3);
        }

        .header .container {
            display: flex;
            align-items: center;
            justify-content: space-between;
            height: 100%;
        }

        .logo {
            display: flex;
            align-items: center;
            gap: 10px;
            font-size: 1.35rem;
            font-weight: 800;
            color: var(--text-white);
            letter-spacing: 0.5px;
        }

        .logo i {
            color: var(--primary);
            font-size: 1.6rem;
        }

        .logo span {
            background: linear-gradient(135deg, #fff 60%, var(--accent-light));
            -webkit-background-clip: text;
            -webkit-text-fill-color: transparent;
            background-clip: text;
        }

        .logo:hover {
            color: var(--text-white);
        }

        .nav {
            display: flex;
            align-items: center;
            gap: 6px;
        }

        .nav a {
            color: rgba(255, 255, 255, 0.78);
            padding: 8px 18px;
            border-radius: var(--radius-sm);
            font-size: 0.95rem;
            font-weight: 500;
            transition: var(--transition);
            position: relative;
        }

        .nav a:hover {
            color: #fff;
            background: rgba(255, 255, 255, 0.08);
        }

        .nav a.active {
            color: #fff;
            background: rgba(230, 57, 70, 0.2);
        }

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

        .nav a.nav-cta {
            background: var(--primary);
            color: #fff;
            padding: 10px 24px;
            border-radius: var(--radius-sm);
            font-weight: 600;
            display: flex;
            align-items: center;
            gap: 8px;
            margin-left: 8px;
            box-shadow: 0 4px 16px rgba(230, 57, 70, 0.35);
        }

        .nav a.nav-cta:hover {
            background: var(--primary-dark);
            transform: translateY(-2px);
            box-shadow: 0 8px 28px rgba(230, 57, 70, 0.45);
        }

        .nav a.nav-cta i {
            font-size: 1.05rem;
        }

        /* Hamburger */
        .hamburger {
            display: none;
            flex-direction: column;
            gap: 5px;
            padding: 6px;
            background: transparent;
            border: none;
            cursor: pointer;
        }

        .hamburger span {
            width: 28px;
            height: 3px;
            background: #fff;
            border-radius: 3px;
            transition: var(--transition);
        }

        .hamburger.active span:nth-child(1) {
            transform: rotate(45deg) translate(5px, 6px);
        }
        .hamburger.active span:nth-child(2) {
            opacity: 0;
        }
        .hamburger.active span:nth-child(3) {
            transform: rotate(-45deg) translate(5px, -6px);
        }

        /* ===== Hero / Banner ===== */
        .hero-banner {
            padding-top: var(--nav-height);
            min-height: 420px;
            display: flex;
            align-items: center;
            position: relative;
            background: var(--dark);
            background-image: url('/assets/images/backpic/back-2.png');
            background-size: cover;
            background-position: center;
            background-blend-mode: overlay;
            overflow: hidden;
        }

        .hero-banner::before {
            content: '';
            position: absolute;
            inset: 0;
            background: linear-gradient(135deg, rgba(13, 27, 42, 0.88) 40%, rgba(230, 57, 70, 0.3) 100%);
            z-index: 1;
        }

        .hero-banner .container {
            position: relative;
            z-index: 2;
            width: 100%;
        }

        .hero-banner .hero-content {
            max-width: 720px;
            padding: 60px 0;
        }

        .hero-banner .hero-badge {
            display: inline-block;
            background: rgba(230, 57, 70, 0.2);
            border: 1px solid rgba(230, 57, 70, 0.3);
            color: var(--accent-light);
            padding: 6px 18px;
            border-radius: 50px;
            font-size: 0.85rem;
            font-weight: 500;
            letter-spacing: 0.5px;
            margin-bottom: 20px;
            backdrop-filter: blur(4px);
        }

        .hero-banner h1 {
            font-size: 3.2rem;
            font-weight: 800;
            color: #fff;
            line-height: 1.15;
            margin-bottom: 18px;
            text-shadow: 0 2px 20px rgba(0, 0, 0, 0.3);
        }

        .hero-banner h1 span {
            background: linear-gradient(135deg, var(--primary-light), var(--accent));
            -webkit-background-clip: text;
            -webkit-text-fill-color: transparent;
            background-clip: text;
        }

        .hero-banner p {
            font-size: 1.15rem;
            color: rgba(255, 255, 255, 0.8);
            max-width: 600px;
            margin-bottom: 30px;
            line-height: 1.7;
        }

        .hero-banner .hero-actions {
            display: flex;
            gap: 16px;
            flex-wrap: wrap;
        }

        .hero-banner .btn-primary {
            padding: 14px 36px;
            background: var(--primary);
            color: #fff;
            border-radius: var(--radius-sm);
            font-weight: 600;
            font-size: 1.05rem;
            display: inline-flex;
            align-items: center;
            gap: 10px;
            box-shadow: 0 6px 24px rgba(230, 57, 70, 0.4);
            transition: var(--transition);
        }

        .hero-banner .btn-primary:hover {
            background: var(--primary-dark);
            transform: translateY(-3px);
            box-shadow: 0 12px 36px rgba(230, 57, 70, 0.5);
            color: #fff;
        }

        .hero-banner .btn-outline {
            padding: 14px 36px;
            background: transparent;
            color: #fff;
            border: 2px solid rgba(255, 255, 255, 0.3);
            border-radius: var(--radius-sm);
            font-weight: 600;
            font-size: 1.05rem;
            display: inline-flex;
            align-items: center;
            gap: 10px;
            transition: var(--transition);
        }

        .hero-banner .btn-outline:hover {
            border-color: var(--primary);
            background: rgba(230, 57, 70, 0.15);
            color: #fff;
            transform: translateY(-3px);
        }

        /* ===== Sections ===== */
        .section {
            padding: 80px 0;
        }

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

        .section-dark {
            background: var(--dark);
            color: rgba(255, 255, 255, 0.85);
        }

        .section-dark h2,
        .section-dark h3 {
            color: #fff;
        }

        .section-header {
            text-align: center;
            margin-bottom: 52px;
        }

        .section-header h2 {
            font-size: 2.4rem;
            font-weight: 800;
            margin-bottom: 12px;
            position: relative;
            display: inline-block;
        }

        .section-header h2::after {
            content: '';
            display: block;
            width: 60px;
            height: 4px;
            background: var(--primary);
            border-radius: 4px;
            margin: 12px auto 0;
        }

        .section-header p {
            font-size: 1.1rem;
            color: var(--text-light);
            max-width: 600px;
            margin: 0 auto;
        }

        .section-dark .section-header p {
            color: rgba(255, 255, 255, 0.6);
        }

        /* ===== Cards ===== */
        .card-grid {
            display: grid;
            grid-template-columns: repeat(3, 1fr);
            gap: 28px;
        }

        .card {
            background: #fff;
            border-radius: var(--radius);
            overflow: hidden;
            box-shadow: var(--shadow);
            transition: var(--transition);
            border: 1px solid var(--border);
        }

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

        .card-img {
            width: 100%;
            aspect-ratio: 16/10;
            object-fit: cover;
            display: block;
        }

        .card-body {
            padding: 24px;
        }

        .card-body .card-tag {
            display: inline-block;
            background: rgba(230, 57, 70, 0.08);
            color: var(--primary);
            padding: 4px 14px;
            border-radius: 50px;
            font-size: 0.8rem;
            font-weight: 600;
            margin-bottom: 10px;
        }

        .card-body h3 {
            font-size: 1.25rem;
            margin-bottom: 10px;
            color: var(--secondary);
        }

        .card-body p {
            color: var(--text-light);
            font-size: 0.95rem;
            line-height: 1.6;
            margin-bottom: 16px;
        }

        .card-body .card-meta {
            display: flex;
            align-items: center;
            gap: 16px;
            font-size: 0.85rem;
            color: var(--text-light);
        }

        .card-body .card-meta i {
            margin-right: 4px;
        }

        .card-body .card-link {
            font-weight: 600;
            color: var(--primary);
            display: inline-flex;
            align-items: center;
            gap: 6px;
            transition: var(--transition);
        }

        .card-body .card-link:hover {
            gap: 12px;
            color: var(--primary-dark);
        }

        /* Dark card variant */
        .card-dark {
            background: var(--dark-card);
            border-color: rgba(255, 255, 255, 0.06);
        }

        .card-dark .card-body h3 {
            color: #fff;
        }
        .card-dark .card-body p {
            color: rgba(255, 255, 255, 0.65);
        }
        .card-dark .card-body .card-tag {
            background: rgba(230, 57, 70, 0.2);
        }

        /* ===== Stats / Data Cards ===== */
        .stats-grid {
            display: grid;
            grid-template-columns: repeat(4, 1fr);
            gap: 24px;
        }

        .stat-card {
            background: rgba(255, 255, 255, 0.05);
            backdrop-filter: blur(8px);
            border: 1px solid rgba(255, 255, 255, 0.08);
            border-radius: var(--radius);
            padding: 32px 20px;
            text-align: center;
            transition: var(--transition);
        }

        .stat-card:hover {
            transform: translateY(-4px);
            background: rgba(255, 255, 255, 0.08);
        }

        .stat-card .stat-number {
            font-size: 2.8rem;
            font-weight: 800;
            color: var(--primary);
            line-height: 1.1;
            margin-bottom: 6px;
        }

        .stat-card .stat-label {
            font-size: 1rem;
            color: rgba(255, 255, 255, 0.7);
            font-weight: 500;
        }

        /* ===== List / Article List ===== */
        .article-list {
            display: flex;
            flex-direction: column;
            gap: 16px;
        }

        .article-item {
            display: flex;
            align-items: center;
            gap: 20px;
            background: #fff;
            padding: 20px 24px;
            border-radius: var(--radius-sm);
            box-shadow: var(--shadow);
            border: 1px solid var(--border);
            transition: var(--transition);
        }

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

        .article-item .item-index {
            width: 40px;
            height: 40px;
            border-radius: 50%;
            background: var(--primary);
            color: #fff;
            display: flex;
            align-items: center;
            justify-content: center;
            font-weight: 700;
            font-size: 1.1rem;
            flex-shrink: 0;
        }

        .article-item .item-index.gold {
            background: linear-gradient(135deg, #f4a261, #e76f51);
        }
        .article-item .item-index.silver {
            background: linear-gradient(135deg, #adb5bd, #6c757d);
        }
        .article-item .item-index.bronze {
            background: linear-gradient(135deg, #cd7f32, #a0522d);
        }

        .article-item .item-content {
            flex: 1;
            min-width: 0;
        }

        .article-item .item-content h4 {
            font-size: 1.1rem;
            font-weight: 600;
            margin-bottom: 4px;
            color: var(--secondary);
        }

        .article-item .item-content p {
            font-size: 0.92rem;
            color: var(--text-light);
            white-space: nowrap;
            overflow: hidden;
            text-overflow: ellipsis;
        }

        .article-item .item-meta {
            font-size: 0.85rem;
            color: var(--text-light);
            white-space: nowrap;
            flex-shrink: 0;
        }

        .article-item .item-meta i {
            margin-right: 4px;
        }

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

        .faq-item {
            background: #fff;
            border-radius: var(--radius-sm);
            border: 1px solid var(--border);
            overflow: hidden;
            transition: var(--transition);
        }

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

        .faq-question {
            padding: 20px 24px;
            font-size: 1.05rem;
            font-weight: 600;
            color: var(--secondary);
            display: flex;
            align-items: center;
            justify-content: space-between;
            cursor: pointer;
            background: transparent;
            width: 100%;
            text-align: left;
            transition: var(--transition);
        }

        .faq-question i {
            color: var(--primary);
            transition: var(--transition);
            font-size: 1.2rem;
        }

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

        .faq-answer {
            padding: 0 24px 20px;
            color: var(--text-light);
            line-height: 1.7;
            display: none;
        }

        .faq-answer.show {
            display: block;
        }

        /* Dark FAQ */
        .section-dark .faq-item {
            background: var(--dark-card);
            border-color: rgba(255, 255, 255, 0.06);
        }
        .section-dark .faq-question {
            color: #fff;
        }
        .section-dark .faq-answer {
            color: rgba(255, 255, 255, 0.65);
        }

        /* ===== CTA ===== */
        .cta-section {
            padding: 80px 0;
            background: var(--dark);
            background-image: url('/assets/images/backpic/back-3.png');
            background-size: cover;
            background-position: center;
            background-blend-mode: overlay;
            position: relative;
        }

        .cta-section::before {
            content: '';
            position: absolute;
            inset: 0;
            background: linear-gradient(135deg, rgba(13, 27, 42, 0.9) 50%, rgba(230, 57, 70, 0.25) 100%);
            z-index: 1;
        }

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

        .cta-section h2 {
            font-size: 2.4rem;
            font-weight: 800;
            color: #fff;
            margin-bottom: 16px;
        }

        .cta-section p {
            font-size: 1.1rem;
            color: rgba(255, 255, 255, 0.75);
            max-width: 600px;
            margin: 0 auto 32px;
        }

        .cta-section .cta-btn {
            display: inline-flex;
            align-items: center;
            gap: 12px;
            padding: 18px 48px;
            background: var(--primary);
            color: #fff;
            font-size: 1.15rem;
            font-weight: 700;
            border-radius: var(--radius-sm);
            box-shadow: 0 8px 32px rgba(230, 57, 70, 0.4);
            transition: var(--transition);
        }

        .cta-section .cta-btn:hover {
            background: var(--primary-dark);
            transform: translateY(-4px);
            box-shadow: 0 16px 48px rgba(230, 57, 70, 0.5);
            color: #fff;
        }

        /* ===== Footer ===== */
        .footer {
            background: var(--dark);
            color: rgba(255, 255, 255, 0.7);
            padding: 60px 0 30px;
            border-top: 1px solid rgba(255, 255, 255, 0.05);
        }

        .footer-inner {
            display: grid;
            grid-template-columns: 1.6fr 1fr 1fr 1fr;
            gap: 40px;
            margin-bottom: 40px;
        }

        .footer-brand .logo {
            margin-bottom: 16px;
            font-size: 1.25rem;
        }

        .footer-brand p {
            font-size: 0.92rem;
            line-height: 1.7;
            color: rgba(255, 255, 255, 0.55);
            margin-bottom: 20px;
        }

        .footer-social {
            display: flex;
            gap: 14px;
        }

        .footer-social a {
            display: flex;
            align-items: center;
            justify-content: center;
            width: 40px;
            height: 40px;
            border-radius: 50%;
            background: rgba(255, 255, 255, 0.06);
            color: rgba(255, 255, 255, 0.6);
            font-size: 1.2rem;
            transition: var(--transition);
        }

        .footer-social a:hover {
            background: var(--primary);
            color: #fff;
            transform: translateY(-3px);
        }

        .footer-col h4 {
            font-size: 1.05rem;
            font-weight: 700;
            color: #fff;
            margin-bottom: 18px;
        }

        .footer-col a {
            display: block;
            color: rgba(255, 255, 255, 0.55);
            padding: 5px 0;
            font-size: 0.92rem;
            transition: var(--transition);
        }

        .footer-col a:hover {
            color: var(--primary);
            padding-left: 4px;
        }

        .footer-bottom {
            border-top: 1px solid rgba(255, 255, 255, 0.05);
            padding-top: 24px;
            text-align: center;
            font-size: 0.88rem;
            color: rgba(255, 255, 255, 0.4);
        }

        /* ===== Responsive ===== */
        @media (max-width: 1024px) {
            .card-grid {
                grid-template-columns: repeat(2, 1fr);
            }
            .stats-grid {
                grid-template-columns: repeat(2, 1fr);
            }
            .footer-inner {
                grid-template-columns: 1fr 1fr;
            }
            .hero-banner h1 {
                font-size: 2.6rem;
            }
            .section-header h2 {
                font-size: 2rem;
            }
        }

        @media (max-width: 768px) {
            .hamburger {
                display: flex;
            }

            .nav {
                position: fixed;
                top: var(--nav-height);
                left: 0;
                right: 0;
                background: rgba(13, 27, 42, 0.98);
                backdrop-filter: blur(16px);
                flex-direction: column;
                padding: 20px 24px;
                gap: 8px;
                transform: translateY(-120%);
                opacity: 0;
                transition: var(--transition);
                border-bottom: 2px solid rgba(230, 57, 70, 0.2);
                box-shadow: 0 8px 32px rgba(0, 0, 0, 0.4);
                pointer-events: none;
            }

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

            .nav a {
                width: 100%;
                text-align: center;
                padding: 12px 18px;
            }

            .nav a.nav-cta {
                margin-left: 0;
                justify-content: center;
            }

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

            .hero-banner {
                min-height: 360px;
            }
            .hero-banner h1 {
                font-size: 2rem;
            }
            .hero-banner p {
                font-size: 1rem;
            }
            .hero-banner .hero-actions {
                flex-direction: column;
                gap: 12px;
            }
            .hero-banner .hero-actions a {
                justify-content: center;
            }

            .section {
                padding: 56px 0;
            }
            .section-header h2 {
                font-size: 1.7rem;
            }
            .card-grid {
                grid-template-columns: 1fr;
                gap: 20px;
            }
            .stats-grid {
                grid-template-columns: repeat(2, 1fr);
                gap: 16px;
            }
            .stat-card {
                padding: 24px 16px;
            }
            .stat-card .stat-number {
                font-size: 2rem;
            }

            .article-item {
                flex-wrap: wrap;
                gap: 12px;
                padding: 16px 18px;
            }
            .article-item .item-meta {
                width: 100%;
                text-align: right;
            }

            .cta-section h2 {
                font-size: 1.8rem;
            }
            .cta-section .cta-btn {
                padding: 14px 32px;
                font-size: 1rem;
            }

            .footer-inner {
                grid-template-columns: 1fr;
                gap: 32px;
            }
            .footer-brand .footer-social {
                justify-content: center;
            }
            .footer-col {
                text-align: center;
            }
        }

        @media (max-width: 520px) {
            .container {
                padding: 0 16px;
            }
            .hero-banner h1 {
                font-size: 1.6rem;
            }
            .hero-banner .hero-badge {
                font-size: 0.75rem;
            }
            .section-header h2 {
                font-size: 1.4rem;
            }
            .stats-grid {
                grid-template-columns: 1fr 1fr;
                gap: 12px;
            }
            .stat-card .stat-number {
                font-size: 1.7rem;
            }
            .stat-card .stat-label {
                font-size: 0.85rem;
            }
            .card-body {
                padding: 18px;
            }
            .faq-question {
                font-size: 0.95rem;
                padding: 16px 18px;
            }
            .faq-answer {
                padding: 0 18px 16px;
                font-size: 0.92rem;
            }
            .cta-section h2 {
                font-size: 1.5rem;
            }
            .cta-section p {
                font-size: 0.95rem;
            }
        }

        /* ===== Utility ===== */
        .text-center {
            text-align: center;
        }
        .mt-12 {
            margin-top: 12px;
        }
        .mt-24 {
            margin-top: 24px;
        }
        .gap-16 {
            gap: 16px;
        }
        .flex-center {
            display: flex;
            align-items: center;
            justify-content: center;
        }

        /* Smooth reveal animation */
        .reveal {
            opacity: 0;
            transform: translateY(30px);
            transition: opacity 0.6s ease, transform 0.6s ease;
        }

        .reveal.visible {
            opacity: 1;
            transform: translateY(0);
        }

/* roulang page: article */
/* ===== 设计变量 ===== */
        :root {
            --primary: #0f0f1a;
            --primary-light: #1a1a2e;
            --primary-mid: #2a2a45;
            --accent: #f0b429;
            --accent-dark: #d4941a;
            --accent-glow: rgba(240, 180, 41, 0.25);
            --bg: #0a0a12;
            --bg-card: #151525;
            --bg-card-hover: #1c1c32;
            --bg-section: #111122;
            --text: #f0f0f0;
            --text-muted: #9090aa;
            --text-dim: #606080;
            --border: #2a2a45;
            --border-light: #3a3a55;
            --radius-sm: 8px;
            --radius: 12px;
            --radius-lg: 20px;
            --shadow-sm: 0 2px 8px rgba(0, 0, 0, 0.3);
            --shadow: 0 6px 24px rgba(0, 0, 0, 0.35);
            --shadow-lg: 0 12px 40px rgba(0, 0, 0, 0.5);
            --shadow-glow: 0 0 30px var(--accent-glow);
            --transition: 0.3s cubic-bezier(0.4, 0, 0.2, 1);
            --font: 'Inter', -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, 'Helvetica Neue', sans-serif;
            --container: 1200px;
            --header-h: 72px;
        }

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

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

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

        a {
            color: var(--accent);
            text-decoration: none;
            transition: var(--transition);
        }
        a:hover,
        a:focus {
            color: #f7c94e;
            outline: none;
        }
        a:focus-visible {
            outline: 2px solid var(--accent);
            outline-offset: 2px;
            border-radius: 4px;
        }

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

        button,
        input,
        textarea,
        select {
            font: inherit;
            color: inherit;
            border: none;
            background: none;
            outline: none;
        }

        button {
            cursor: pointer;
        }

        ul,
        ol {
            list-style: none;
        }

        h1,
        h2,
        h3,
        h4,
        h5,
        h6 {
            line-height: 1.25;
            font-weight: 700;
            color: var(--text);
        }

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

        @media (max-width: 768px) {
            .container {
                padding: 0 16px;
            }
        }

        /* ===== 导航 ===== */
        .header {
            position: fixed;
            top: 0;
            left: 0;
            right: 0;
            z-index: 1000;
            background: rgba(15, 15, 26, 0.88);
            backdrop-filter: blur(18px);
            -webkit-backdrop-filter: blur(18px);
            border-bottom: 1px solid rgba(42, 42, 69, 0.5);
            height: var(--header-h);
            transition: var(--transition);
        }

        .header.scrolled {
            background: rgba(10, 10, 18, 0.96);
            border-bottom-color: rgba(240, 180, 41, 0.2);
            box-shadow: 0 4px 30px rgba(0, 0, 0, 0.5);
        }

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

        .logo {
            display: flex;
            align-items: center;
            gap: 10px;
            font-size: 1.35rem;
            font-weight: 800;
            color: var(--text);
            letter-spacing: -0.5px;
            transition: var(--transition);
        }
        .logo i {
            color: var(--accent);
            font-size: 1.6rem;
            filter: drop-shadow(0 0 8px var(--accent-glow));
        }
        .logo span {
            background: linear-gradient(135deg, #f0f0f0 30%, var(--accent) 100%);
            -webkit-background-clip: text;
            -webkit-text-fill-color: transparent;
            background-clip: text;
        }
        .logo:hover {
            transform: scale(1.02);
        }

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

        .nav a {
            position: relative;
            padding: 8px 18px;
            font-size: 0.95rem;
            font-weight: 500;
            color: var(--text-muted);
            border-radius: var(--radius-sm);
            transition: var(--transition);
        }
        .nav a:hover {
            color: var(--text);
            background: rgba(240, 180, 41, 0.08);
        }
        .nav a.active {
            color: var(--accent);
            background: rgba(240, 180, 41, 0.12);
        }
        .nav a.active::after {
            content: '';
            position: absolute;
            bottom: 2px;
            left: 50%;
            transform: translateX(-50%);
            width: 20px;
            height: 3px;
            background: var(--accent);
            border-radius: 4px;
            box-shadow: 0 0 12px var(--accent-glow);
        }

        .nav-cta {
            display: inline-flex;
            align-items: center;
            gap: 8px;
            padding: 10px 24px !important;
            font-weight: 600 !important;
            color: var(--primary) !important;
            background: linear-gradient(135deg, var(--accent), var(--accent-dark)) !important;
            border-radius: var(--radius-sm) !important;
            box-shadow: 0 4px 16px var(--accent-glow);
            transition: var(--transition) !important;
        }
        .nav-cta i {
            font-size: 0.9rem;
        }
        .nav-cta:hover {
            transform: translateY(-2px) scale(1.03);
            box-shadow: 0 8px 28px var(--accent-glow);
            background: linear-gradient(135deg, #f7c94e, var(--accent)) !important;
            color: var(--primary) !important;
        }

        /* 移动端菜单按钮 */
        .menu-toggle {
            display: none;
            font-size: 1.5rem;
            color: var(--text);
            padding: 8px 12px;
            border-radius: var(--radius-sm);
            background: rgba(255, 255, 255, 0.05);
            border: 1px solid var(--border);
            transition: var(--transition);
        }
        .menu-toggle:hover {
            background: rgba(255, 255, 255, 0.1);
        }

        @media (max-width: 820px) {
            .nav {
                position: fixed;
                top: var(--header-h);
                left: 0;
                right: 0;
                flex-direction: column;
                background: rgba(10, 10, 18, 0.98);
                backdrop-filter: blur(20px);
                padding: 16px 24px 24px;
                gap: 4px;
                border-bottom: 2px solid var(--border);
                transform: translateY(-110%);
                opacity: 0;
                pointer-events: none;
                transition: var(--transition);
                box-shadow: 0 20px 60px rgba(0, 0, 0, 0.6);
            }
            .nav.open {
                transform: translateY(0);
                opacity: 1;
                pointer-events: auto;
            }
            .nav a {
                width: 100%;
                padding: 12px 16px;
                font-size: 1.05rem;
            }
            .nav a.active::after {
                bottom: 4px;
                width: 30px;
            }
            .nav-cta {
                justify-content: center;
                margin-top: 8px;
            }
            .menu-toggle {
                display: block;
            }
        }

        @media (max-width: 520px) {
            .logo span {
                font-size: 0.95rem;
            }
            .logo i {
                font-size: 1.3rem;
            }
            .header-inner {
                padding: 0 12px;
            }
        }

        /* ===== 文章 Banner ===== */
        .article-banner {
            position: relative;
            padding: 140px 0 80px;
            margin-top: var(--header-h);
            min-height: 380px;
            display: flex;
            align-items: center;
            background: var(--bg-section);
            overflow: hidden;
        }
        .article-banner-bg {
            position: absolute;
            inset: 0;
            background: url('/assets/images/backpic/back-1.png') center center / cover no-repeat;
            filter: brightness(0.35) saturate(0.9);
            transform: scale(1.05);
            transition: transform 12s ease;
        }
        .article-banner:hover .article-banner-bg {
            transform: scale(1.1);
        }
        .article-banner-overlay {
            position: absolute;
            inset: 0;
            background: linear-gradient(135deg, rgba(15, 15, 26, 0.88) 30%, rgba(15, 15, 26, 0.5) 70%, rgba(240, 180, 41, 0.08) 100%);
        }
        .article-banner .container {
            position: relative;
            z-index: 2;
            width: 100%;
        }
        .article-banner-meta {
            display: flex;
            flex-wrap: wrap;
            align-items: center;
            gap: 12px 20px;
            margin-bottom: 18px;
        }
        .article-banner-category {
            display: inline-block;
            padding: 5px 16px;
            font-size: 0.8rem;
            font-weight: 600;
            color: var(--primary);
            background: linear-gradient(135deg, var(--accent), var(--accent-dark));
            border-radius: 20px;
            letter-spacing: 0.3px;
            box-shadow: 0 2px 12px var(--accent-glow);
        }
        .article-banner-date,
        .article-banner-views {
            font-size: 0.85rem;
            color: var(--text-muted);
            display: flex;
            align-items: center;
            gap: 6px;
        }
        .article-banner-date i,
        .article-banner-views i {
            color: var(--accent);
            font-size: 0.8rem;
        }
        .article-banner h1 {
            font-size: 2.6rem;
            font-weight: 800;
            color: var(--text);
            line-height: 1.2;
            max-width: 900px;
            text-shadow: 0 2px 20px rgba(0, 0, 0, 0.5);
            letter-spacing: -0.5px;
        }
        .article-banner h1 .highlight {
            color: var(--accent);
        }
        .article-banner-desc {
            font-size: 1.15rem;
            color: var(--text-muted);
            max-width: 720px;
            margin-top: 12px;
            line-height: 1.6;
        }

        @media (max-width: 1024px) {
            .article-banner h1 {
                font-size: 2.2rem;
            }
        }
        @media (max-width: 768px) {
            .article-banner {
                padding: 120px 0 60px;
                min-height: 300px;
            }
            .article-banner h1 {
                font-size: 1.7rem;
            }
            .article-banner-desc {
                font-size: 1rem;
            }
        }
        @media (max-width: 520px) {
            .article-banner h1 {
                font-size: 1.4rem;
            }
            .article-banner-meta {
                gap: 8px 14px;
            }
        }

        /* ===== 文章正文 ===== */
        .article-content-section {
            padding: 60px 0 40px;
            background: var(--bg);
        }
        .article-layout {
            display: grid;
            grid-template-columns: 1fr 300px;
            gap: 48px;
        }
        .article-main {
            min-width: 0;
        }
        .article-sidebar {
            position: sticky;
            top: calc(var(--header-h) + 24px);
            align-self: start;
        }

        .article-body {
            background: var(--bg-card);
            border-radius: var(--radius-lg);
            padding: 40px 44px;
            border: 1px solid var(--border);
            box-shadow: var(--shadow);
        }
        .article-body .featured-image {
            margin-bottom: 32px;
            border-radius: var(--radius);
            overflow: hidden;
            box-shadow: var(--shadow-sm);
        }
        .article-body .featured-image img {
            width: 100%;
            height: auto;
            max-height: 480px;
            object-fit: cover;
            transition: transform 8s ease;
        }
        .article-body .featured-image:hover img {
            transform: scale(1.03);
        }

        .article-body .content {
            font-size: 1.05rem;
            line-height: 1.85;
            color: var(--text);
        }
        .article-body .content p {
            margin-bottom: 1.4em;
        }
        .article-body .content h2,
        .article-body .content h3 {
            margin-top: 1.8em;
            margin-bottom: 0.6em;
            color: var(--text);
        }
        .article-body .content h2 {
            font-size: 1.6rem;
            border-left: 4px solid var(--accent);
            padding-left: 16px;
        }
        .article-body .content h3 {
            font-size: 1.25rem;
        }
        .article-body .content ul,
        .article-body .content ol {
            margin-bottom: 1.4em;
            padding-left: 24px;
        }
        .article-body .content ul li {
            list-style: disc;
            margin-bottom: 0.4em;
            color: var(--text-muted);
        }
        .article-body .content ul li strong {
            color: var(--text);
        }
        .article-body .content ol li {
            list-style: decimal;
            margin-bottom: 0.4em;
            color: var(--text-muted);
        }
        .article-body .content a {
            color: var(--accent);
            text-decoration: underline;
            text-underline-offset: 2px;
        }
        .article-body .content a:hover {
            color: #f7c94e;
        }
        .article-body .content blockquote {
            border-left: 4px solid var(--accent);
            background: rgba(240, 180, 41, 0.06);
            padding: 16px 24px;
            margin: 1.6em 0;
            border-radius: 0 var(--radius-sm) var(--radius-sm) 0;
            color: var(--text-muted);
            font-style: italic;
        }
        .article-body .content img {
            margin: 1.6em 0;
            border-radius: var(--radius);
            box-shadow: var(--shadow);
        }

        /* 文章信息栏 */
        .article-info-bar {
            display: flex;
            flex-wrap: wrap;
            align-items: center;
            justify-content: space-between;
            padding: 20px 0 0;
            margin-top: 32px;
            border-top: 1px solid var(--border);
            gap: 16px;
        }
        .article-tags {
            display: flex;
            flex-wrap: wrap;
            gap: 8px;
        }
        .article-tags .tag {
            display: inline-block;
            padding: 4px 14px;
            font-size: 0.8rem;
            color: var(--text-muted);
            background: rgba(240, 180, 41, 0.08);
            border: 1px solid var(--border);
            border-radius: 20px;
            transition: var(--transition);
        }
        .article-tags .tag:hover {
            color: var(--accent);
            border-color: var(--accent);
            background: rgba(240, 180, 41, 0.15);
        }
        .article-share {
            display: flex;
            align-items: center;
            gap: 10px;
            font-size: 0.85rem;
            color: var(--text-muted);
        }
        .article-share a {
            display: inline-flex;
            align-items: center;
            justify-content: center;
            width: 36px;
            height: 36px;
            border-radius: 50%;
            color: var(--text-muted);
            background: rgba(255, 255, 255, 0.04);
            border: 1px solid var(--border);
            transition: var(--transition);
        }
        .article-share a:hover {
            color: var(--accent);
            border-color: var(--accent);
            background: rgba(240, 180, 41, 0.12);
            transform: translateY(-2px);
        }

        /* 侧边栏 */
        .sidebar-widget {
            background: var(--bg-card);
            border-radius: var(--radius);
            border: 1px solid var(--border);
            padding: 24px;
            margin-bottom: 24px;
            box-shadow: var(--shadow-sm);
        }
        .sidebar-widget h3 {
            font-size: 1.1rem;
            font-weight: 700;
            margin-bottom: 16px;
            color: var(--text);
            display: flex;
            align-items: center;
            gap: 8px;
        }
        .sidebar-widget h3 i {
            color: var(--accent);
        }
        .sidebar-widget ul li {
            padding: 10px 0;
            border-bottom: 1px solid rgba(42, 42, 69, 0.4);
        }
        .sidebar-widget ul li:last-child {
            border-bottom: none;
        }
        .sidebar-widget ul li a {
            display: flex;
            align-items: flex-start;
            gap: 12px;
            color: var(--text-muted);
            font-size: 0.9rem;
            line-height: 1.4;
            transition: var(--transition);
        }
        .sidebar-widget ul li a:hover {
            color: var(--accent);
        }
        .sidebar-widget ul li a .thumb {
            width: 60px;
            height: 60px;
            border-radius: var(--radius-sm);
            object-fit: cover;
            flex-shrink: 0;
            background: var(--primary-mid);
        }
        .sidebar-widget ul li a .info {
            flex: 1;
            min-width: 0;
        }
        .sidebar-widget ul li a .info .title {
            display: block;
            font-weight: 600;
            color: var(--text);
            margin-bottom: 2px;
            display: -webkit-box;
            -webkit-line-clamp: 2;
            -webkit-box-orient: vertical;
            overflow: hidden;
        }
        .sidebar-widget ul li a .info .date {
            font-size: 0.78rem;
            color: var(--text-dim);
        }

        .sidebar-cta {
            background: linear-gradient(135deg, var(--primary-light), var(--primary));
            border: 1px solid var(--accent);
            text-align: center;
            padding: 28px 20px;
        }
        .sidebar-cta h3 {
            justify-content: center;
        }
        .sidebar-cta p {
            font-size: 0.9rem;
            color: var(--text-muted);
            margin-bottom: 16px;
        }
        .sidebar-cta .btn {
            width: 100%;
        }

        @media (max-width: 1024px) {
            .article-layout {
                grid-template-columns: 1fr;
                gap: 32px;
            }
            .article-sidebar {
                position: static;
                display: grid;
                grid-template-columns: 1fr 1fr;
                gap: 20px;
            }
            .sidebar-widget {
                margin-bottom: 0;
            }
            .sidebar-cta {
                grid-column: 1 / -1;
            }
        }
        @media (max-width: 768px) {
            .article-body {
                padding: 24px 20px;
            }
            .article-sidebar {
                grid-template-columns: 1fr;
            }
        }
        @media (max-width: 520px) {
            .article-body {
                padding: 20px 16px;
            }
            .article-body .content {
                font-size: 0.98rem;
            }
            .article-body .content h2 {
                font-size: 1.3rem;
            }
        }

        /* ===== 相关文章 ===== */
        .related-section {
            padding: 60px 0;
            background: var(--bg-section);
        }
        .related-section .section-title {
            text-align: center;
            margin-bottom: 40px;
        }
        .related-section .section-title h2 {
            font-size: 2rem;
            font-weight: 800;
        }
        .related-section .section-title h2 i {
            color: var(--accent);
            margin-right: 10px;
        }
        .related-section .section-title p {
            color: var(--text-muted);
            font-size: 1rem;
            margin-top: 8px;
        }

        .related-grid {
            display: grid;
            grid-template-columns: repeat(3, 1fr);
            gap: 24px;
        }

        .related-card {
            background: var(--bg-card);
            border-radius: var(--radius);
            border: 1px solid var(--border);
            overflow: hidden;
            transition: var(--transition);
            box-shadow: var(--shadow-sm);
        }
        .related-card:hover {
            transform: translateY(-6px);
            border-color: var(--accent);
            box-shadow: var(--shadow-lg), var(--shadow-glow);
        }
        .related-card .card-img {
            position: relative;
            height: 200px;
            overflow: hidden;
            background: var(--primary-mid);
        }
        .related-card .card-img img {
            width: 100%;
            height: 100%;
            object-fit: cover;
            transition: transform 6s ease;
        }
        .related-card:hover .card-img img {
            transform: scale(1.08);
        }
        .related-card .card-img .card-cat {
            position: absolute;
            top: 12px;
            left: 12px;
            padding: 3px 12px;
            font-size: 0.75rem;
            font-weight: 600;
            color: var(--primary);
            background: var(--accent);
            border-radius: 16px;
            box-shadow: 0 2px 10px rgba(0, 0, 0, 0.3);
        }
        .related-card .card-body {
            padding: 20px 22px 24px;
        }
        .related-card .card-body h3 {
            font-size: 1.05rem;
            font-weight: 700;
            margin-bottom: 8px;
            display: -webkit-box;
            -webkit-line-clamp: 2;
            -webkit-box-orient: vertical;
            overflow: hidden;
        }
        .related-card .card-body h3 a {
            color: var(--text);
        }
        .related-card .card-body h3 a:hover {
            color: var(--accent);
        }
        .related-card .card-body p {
            font-size: 0.88rem;
            color: var(--text-muted);
            display: -webkit-box;
            -webkit-line-clamp: 2;
            -webkit-box-orient: vertical;
            overflow: hidden;
            margin-bottom: 12px;
        }
        .related-card .card-body .card-meta {
            display: flex;
            align-items: center;
            justify-content: space-between;
            font-size: 0.8rem;
            color: var(--text-dim);
        }
        .related-card .card-body .card-meta .date i {
            margin-right: 4px;
        }

        @media (max-width: 1024px) {
            .related-grid {
                grid-template-columns: repeat(2, 1fr);
            }
        }
        @media (max-width: 640px) {
            .related-grid {
                grid-template-columns: 1fr;
            }
            .related-section .section-title h2 {
                font-size: 1.5rem;
            }
        }

        /* ===== CTA ===== */
        .cta-section {
            padding: 80px 0;
            background: var(--bg);
            position: relative;
            overflow: hidden;
        }
        .cta-section::before {
            content: '';
            position: absolute;
            inset: 0;
            background: radial-gradient(ellipse at 30% 50%, rgba(240, 180, 41, 0.06), transparent 70%);
            pointer-events: none;
        }
        .cta-box {
            position: relative;
            background: linear-gradient(135deg, var(--primary-light), var(--primary));
            border: 1px solid var(--accent);
            border-radius: var(--radius-lg);
            padding: 56px 60px;
            text-align: center;
            box-shadow: var(--shadow-lg), 0 0 60px rgba(240, 180, 41, 0.06);
            overflow: hidden;
        }
        .cta-box::after {
            content: '';
            position: absolute;
            top: -50%;
            right: -20%;
            width: 400px;
            height: 400px;
            background: radial-gradient(circle, rgba(240, 180, 41, 0.08), transparent 70%);
            border-radius: 50%;
            pointer-events: none;
        }
        .cta-box h2 {
            font-size: 2.2rem;
            font-weight: 800;
            margin-bottom: 12px;
            position: relative;
        }
        .cta-box h2 i {
            color: var(--accent);
        }
        .cta-box p {
            font-size: 1.1rem;
            color: var(--text-muted);
            max-width: 600px;
            margin: 0 auto 28px;
            position: relative;
        }
        .cta-box .btn-group {
            display: flex;
            flex-wrap: wrap;
            justify-content: center;
            gap: 16px;
            position: relative;
        }
        .cta-box .btn {
            padding: 14px 36px;
            font-size: 1.05rem;
            font-weight: 700;
            border-radius: var(--radius-sm);
            transition: var(--transition);
            display: inline-flex;
            align-items: center;
            gap: 10px;
        }
        .cta-box .btn-primary {
            background: linear-gradient(135deg, var(--accent), var(--accent-dark));
            color: var(--primary);
            box-shadow: 0 4px 20px var(--accent-glow);
        }
        .cta-box .btn-primary:hover {
            transform: translateY(-3px) scale(1.02);
            box-shadow: 0 10px 36px var(--accent-glow);
        }
        .cta-box .btn-outline {
            border: 2px solid var(--accent);
            color: var(--accent);
            background: transparent;
        }
        .cta-box .btn-outline:hover {
            background: rgba(240, 180, 41, 0.1);
            transform: translateY(-3px);
            box-shadow: 0 8px 24px rgba(240, 180, 41, 0.15);
        }

        @media (max-width: 768px) {
            .cta-box {
                padding: 36px 24px;
            }
            .cta-box h2 {
                font-size: 1.6rem;
            }
            .cta-box p {
                font-size: 0.95rem;
            }
            .cta-box .btn {
                padding: 12px 28px;
                font-size: 0.95rem;
            }
        }
        @media (max-width: 520px) {
            .cta-box h2 {
                font-size: 1.3rem;
            }
            .cta-box .btn-group {
                flex-direction: column;
                align-items: center;
            }
            .cta-box .btn {
                width: 100%;
                justify-content: center;
            }
        }

        /* ===== 内容未找到 ===== */
        .not-found-box {
            text-align: center;
            padding: 80px 24px;
        }
        .not-found-box i {
            font-size: 4rem;
            color: var(--text-dim);
            margin-bottom: 20px;
        }
        .not-found-box h2 {
            font-size: 2rem;
            margin-bottom: 12px;
        }
        .not-found-box p {
            color: var(--text-muted);
            font-size: 1.1rem;
            margin-bottom: 24px;
        }
        .not-found-box .btn {
            display: inline-flex;
            align-items: center;
            gap: 8px;
            padding: 12px 32px;
            background: var(--accent);
            color: var(--primary);
            font-weight: 700;
            border-radius: var(--radius-sm);
            transition: var(--transition);
        }
        .not-found-box .btn:hover {
            transform: translateY(-2px);
            box-shadow: 0 6px 24px var(--accent-glow);
        }

        /* ===== 页脚 ===== */
        .footer {
            background: var(--primary);
            border-top: 1px solid var(--border);
            padding: 60px 0 0;
        }
        .footer-inner {
            display: grid;
            grid-template-columns: 1.8fr 1fr 1fr 1fr;
            gap: 40px;
            padding-bottom: 40px;
            border-bottom: 1px solid var(--border);
        }
        .footer-brand .logo {
            font-size: 1.3rem;
            margin-bottom: 14px;
        }
        .footer-brand p {
            font-size: 0.9rem;
            color: var(--text-muted);
            line-height: 1.7;
            max-width: 360px;
            margin-bottom: 18px;
        }
        .footer-social {
            display: flex;
            gap: 12px;
        }
        .footer-social a {
            display: inline-flex;
            align-items: center;
            justify-content: center;
            width: 40px;
            height: 40px;
            border-radius: 50%;
            color: var(--text-muted);
            background: rgba(255, 255, 255, 0.04);
            border: 1px solid var(--border);
            font-size: 1.1rem;
            transition: var(--transition);
        }
        .footer-social a:hover {
            color: var(--accent);
            border-color: var(--accent);
            background: rgba(240, 180, 41, 0.1);
            transform: translateY(-3px);
        }

        .footer-col h4 {
            font-size: 1rem;
            font-weight: 700;
            margin-bottom: 16px;
            color: var(--text);
        }
        .footer-col a {
            display: block;
            padding: 5px 0;
            font-size: 0.9rem;
            color: var(--text-muted);
            transition: var(--transition);
        }
        .footer-col a:hover {
            color: var(--accent);
            padding-left: 4px;
        }

        .footer-bottom {
            padding: 20px 0;
            text-align: center;
        }
        .footer-bottom p {
            font-size: 0.85rem;
            color: var(--text-dim);
        }

        @media (max-width: 1024px) {
            .footer-inner {
                grid-template-columns: 1fr 1fr;
                gap: 32px;
            }
            .footer-brand {
                grid-column: 1 / -1;
            }
            .footer-brand p {
                max-width: 100%;
            }
        }
        @media (max-width: 640px) {
            .footer-inner {
                grid-template-columns: 1fr;
                gap: 24px;
            }
            .footer-col {
                text-align: center;
            }
            .footer-social {
                justify-content: center;
            }
        }

        /* ===== 通用按钮 ===== */
        .btn {
            display: inline-flex;
            align-items: center;
            gap: 8px;
            padding: 12px 28px;
            font-size: 0.95rem;
            font-weight: 600;
            border-radius: var(--radius-sm);
            transition: var(--transition);
            cursor: pointer;
            border: none;
        }
        .btn:focus-visible {
            outline: 2px solid var(--accent);
            outline-offset: 2px;
        }

        /* ===== 滚动条 ===== */
        ::-webkit-scrollbar {
            width: 8px;
        }
        ::-webkit-scrollbar-track {
            background: var(--bg);
        }
        ::-webkit-scrollbar-thumb {
            background: var(--primary-mid);
            border-radius: 8px;
        }
        ::-webkit-scrollbar-thumb:hover {
            background: var(--accent);
        }

        /* ===== 动画 ===== */
        @keyframes fadeUp {
            from {
                opacity: 0;
                transform: translateY(30px);
            }
            to {
                opacity: 1;
                transform: translateY(0);
            }
        }
        .fade-up {
            animation: fadeUp 0.7s ease forwards;
        }
        .fade-up-delay-1 {
            animation-delay: 0.1s;
        }
        .fade-up-delay-2 {
            animation-delay: 0.2s;
        }
        .fade-up-delay-3 {
            animation-delay: 0.3s;
        }

        /* ===== 面包屑 ===== */
        .breadcrumb {
            display: flex;
            flex-wrap: wrap;
            align-items: center;
            gap: 8px;
            font-size: 0.85rem;
            color: var(--text-muted);
            margin-bottom: 16px;
        }
        .breadcrumb a {
            color: var(--text-muted);
        }
        .breadcrumb a:hover {
            color: var(--accent);
        }
        .breadcrumb span {
            color: var(--text-dim);
        }
        .breadcrumb .sep {
            color: var(--text-dim);
            font-size: 0.7rem;
        }

        /* ===== 返回顶部 ===== */
        .back-to-top {
            position: fixed;
            bottom: 30px;
            right: 30px;
            width: 48px;
            height: 48px;
            border-radius: 50%;
            background: var(--accent);
            color: var(--primary);
            font-size: 1.2rem;
            display: flex;
            align-items: center;
            justify-content: center;
            box-shadow: 0 4px 20px var(--accent-glow);
            z-index: 999;
            opacity: 0;
            transform: translateY(20px);
            pointer-events: none;
            transition: var(--transition);
            border: none;
        }
        .back-to-top.visible {
            opacity: 1;
            transform: translateY(0);
            pointer-events: auto;
        }
        .back-to-top:hover {
            transform: translateY(-4px);
            box-shadow: 0 8px 32px var(--accent-glow);
        }