/* roulang page: index */
:root {
            --primary: #0b1e33;
            --primary-light: #132c47;
            --primary-soft: #1c3a5e;
            --accent: #f0b90b;
            --accent-dark: #d4a408;
            --accent-light: #fbe38e;
            --bg: #f6f8fb;
            --bg-card: #ffffff;
            --bg-dark: #091727;
            --text: #1a2333;
            --text-soft: #5a6b7d;
            --text-light: #8a9aa8;
            --border: #e2e8f0;
            --border-dark: rgba(255,255,255,.1);
            --radius: 16px;
            --radius-sm: 10px;
            --radius-lg: 24px;
            --shadow: 0 8px 30px rgba(11,30,51,.08);
            --shadow-lg: 0 20px 50px rgba(11,30,51,.16);
            --shadow-accent: 0 8px 24px rgba(240,185,11,.25);
            --space: 90px;
            --nav-h: 76px;
        }
        * { margin: 0; padding: 0; box-sizing: border-box; }
        html { scroll-behavior: smooth; }
        body {
            font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", "PingFang SC", "Hiragino Sans GB", "Microsoft YaHei", sans-serif;
            font-size: 16px; line-height: 1.7; color: var(--text); background: var(--bg);
            -webkit-font-smoothing: antialiased;
        }
        img { max-width: 100%; display: block; }
        a { color: inherit; text-decoration: none; transition: all .25s ease; }
        button { font-family: inherit; cursor: pointer; }
        input, textarea { font-family: inherit; }

        .container { max-width: 1240px; margin: 0 auto; padding: 0 24px; }
        .section { padding: var(--space) 0; }
        .section-alt { background: #f0f3f8; }
        .section-dark { background: var(--bg-dark); color: #fff; position: relative; overflow: hidden; }
        .section-head { text-align: center; max-width: 720px; margin: 0 auto 52px; }
        .section-tag {
            display: inline-block; background: rgba(240,185,11,.12); color: #b88a00;
            font-size: 13px; font-weight: 700; letter-spacing: 1px; padding: 5px 16px;
            border-radius: 20px; margin-bottom: 14px; text-transform: uppercase;
        }
        .section-dark .section-tag { background: rgba(240,185,11,.2); color: var(--accent); }
        .section-title { font-size: 36px; font-weight: 800; line-height: 1.3; letter-spacing: -0.5px; color: var(--text); }
        .section-dark .section-title { color: #fff; }
        .section-sub { font-size: 16px; color: var(--text-soft); margin-top: 12px; }
        .section-dark .section-sub { color: rgba(255,255,255,.7); }

        .btn {
            display: inline-flex; align-items: center; justify-content: center; gap: 8px;
            padding: 12px 28px; border-radius: 50px; font-weight: 600; font-size: 15px;
            border: 2px solid transparent; transition: all .3s ease; white-space: nowrap;
        }
        .btn-primary { background: var(--accent); color: var(--primary); border-color: var(--accent); }
        .btn-primary:hover { background: var(--accent-dark); border-color: var(--accent-dark); transform: translateY(-2px); box-shadow: var(--shadow-accent); }
        .btn-outline { background: transparent; color: #fff; border-color: rgba(255,255,255,.4); }
        .btn-outline:hover { border-color: var(--accent); color: var(--accent); transform: translateY(-2px); }
        .btn-ghost { background: transparent; color: var(--text); border-color: var(--border); }
        .btn-ghost:hover { border-color: var(--primary); color: var(--primary); background: rgba(11,30,51,.04); }
        .btn-lg { padding: 15px 38px; font-size: 16px; }

        .badge {
            display: inline-block; padding: 4px 14px; border-radius: 20px; font-size: 12px;
            font-weight: 700; letter-spacing: .3px;
        }
        .badge-accent { background: rgba(240,185,11,.15); color: #b88a00; }
        .badge-primary { background: rgba(11,30,51,.08); color: var(--primary); }
        .badge-green { background: rgba(16,185,129,.12); color: #0f9f6e; }
        .badge-blue { background: rgba(59,130,246,.12); color: #2563eb; }

        /* Header Nav */
        .site-header {
            position: sticky; top: 0; z-index: 100; background: rgba(11,30,51,.96);
            backdrop-filter: blur(14px); border-bottom: 1px solid rgba(255,255,255,.07);
            box-shadow: 0 4px 24px rgba(0,0,0,.25);
        }
        .header-inner { display: flex; align-items: center; gap: 28px; height: var(--nav-h); }
        .logo {
            display: flex; align-items: center; gap: 12px; flex-shrink: 0;
            font-size: 21px; font-weight: 800; color: #fff; letter-spacing: 0.5px;
        }
        .logo-icon {
            width: 42px; height: 42px; border-radius: 12px;
            background: linear-gradient(135deg, var(--accent), #f58b1f);
            display: flex; align-items: center; justify-content: center;
            font-size: 20px; color: var(--primary); box-shadow: 0 4px 14px rgba(240,185,11,.35);
        }
        .logo-text span { color: var(--accent); }
        .nav-search {
            flex: 1; max-width: 420px; position: relative;
        }
        .nav-search input {
            width: 100%; height: 42px; border-radius: 24px; border: 1px solid rgba(255,255,255,.15);
            background: rgba(255,255,255,.08); color: #fff; padding: 0 18px 0 44px;
            font-size: 14px; outline: none; transition: all .3s ease;
        }
        .nav-search input::placeholder { color: rgba(255,255,255,.55); }
        .nav-search input:focus { border-color: var(--accent); background: rgba(255,255,255,.14); box-shadow: 0 0 0 3px rgba(240,185,11,.2); }
        .nav-search i { position: absolute; left: 17px; top: 50%; transform: translateY(-50%); color: rgba(255,255,255,.55); font-size: 14px; }
        .main-nav { display: flex; align-items: center; gap: 4px; margin-left: auto; }
        .main-nav a {
            color: rgba(255,255,255,.8); font-size: 15px; font-weight: 500;
            padding: 8px 14px; border-radius: 10px; position: relative; transition: all .25s;
        }
        .main-nav a:hover { color: #fff; background: rgba(255,255,255,.08); }
        .main-nav a.active { color: var(--accent); background: rgba(240,185,11,.12); font-weight: 600; }
        .nav-toggle {
            display: none; background: none; border: none; color: #fff; font-size: 22px;
            width: 44px; height: 44px; border-radius: 10px; align-items: center; justify-content: center;
        }
        .nav-toggle:hover { background: rgba(255,255,255,.1); }

        @media (max-width: 992px) {
            .nav-search { display: none; }
            .nav-toggle { display: flex; }
            .main-nav {
                display: none; position: absolute; top: var(--nav-h); left: 0; right: 0;
                background: var(--bg-dark); flex-direction: column; padding: 20px;
                gap: 6px; border-bottom: 1px solid var(--border-dark); box-shadow: 0 20px 40px rgba(0,0,0,.3);
            }
            .main-nav.open { display: flex; }
            .main-nav a { width: 100%; padding: 12px 16px; font-size: 16px; }
            .main-nav a.active { background: rgba(240,185,11,.15); }
        }
        @media (min-width: 993px) {
            .main-nav { display: flex !important; }
        }

        /* Hero */
        .hero {
            position: relative; min-height: calc(100vh - var(--nav-h));
            display: flex; align-items: center; padding: 80px 0;
            background-image: linear-gradient(135deg, rgba(9,23,39,.94) 0%, rgba(11,30,51,.82) 55%, rgba(28,58,94,.7) 100%), url('/assets/images/backpic/back-1.png');
            background-size: cover; background-position: center; color: #fff; overflow: hidden;
        }
        .hero::before {
            content: ''; position: absolute; width: 520px; height: 520px; border-radius: 50%;
            background: radial-gradient(circle, rgba(240,185,11,.15), transparent 65%); top: -120px; right: -100px;
        }
        .hero::after {
            content: ''; position: absolute; width: 380px; height: 380px; border-radius: 50%;
            background: radial-gradient(circle, rgba(240,185,11,.08), transparent 60%); bottom: -80px; left: 20%;
        }
        .hero-content { position: relative; z-index: 2; max-width: 680px; }
        .hero-badge {
            display: inline-flex; align-items: center; gap: 8px;
            background: rgba(240,185,11,.16); border: 1px solid rgba(240,185,11,.35);
            padding: 6px 16px; border-radius: 24px; font-size: 13px; font-weight: 600;
            color: var(--accent); margin-bottom: 24px;
        }
        .hero-badge i { font-size: 12px; }
        .hero h1 { font-size: 54px; line-height: 1.15; font-weight: 800; letter-spacing: -1px; margin-bottom: 20px; }
        .hero h1 span { color: var(--accent); }
        .hero p { font-size: 18px; line-height: 1.8; color: rgba(255,255,255,.82); margin-bottom: 32px; max-width: 560px; }
        .hero-btns { display: flex; flex-wrap: wrap; gap: 14px; margin-bottom: 40px; }
        .hero-metrics { display: flex; gap: 36px; flex-wrap: wrap; }
        .hero-metric-single { text-align: center; }
        .hero-metric-single .num { font-size: 30px; font-weight: 800; color: var(--accent); display: block; }
        .hero-metric-single .label { font-size: 14px; color: rgba(255,255,255,.6); margin-top: 2px; }

        @media (max-width: 768px) {
            .hero { padding: 60px 0; min-height: auto; }
            .hero h1 { font-size: 34px; }
            .hero p { font-size: 16px; }
            .hero-metrics { gap: 20px; }
            .hero-metric-single .num { font-size: 24px; }
        }

        /* About / Core */
        .about-grid { display: grid; grid-template-columns: 1.1fr 1fr; gap: 60px; align-items: center; }
        .about-media { position: relative; }
        .about-media img { border-radius: var(--radius-lg); box-shadow: var(--shadow-lg); width: 100%; object-fit: cover; aspect-ratio: 4/3; }
        .about-media::after {
            content: ''; position: absolute; inset: 20px -20px -20px 20px;
            border: 3px solid var(--accent); border-radius: var(--radius-lg); z-index: -1; opacity: .35;
        }
        .about-content h2 { font-size: 32px; font-weight: 800; line-height: 1.4; margin-bottom: 18px; }
        .about-content h2 span { color: var(--accent); }
        .about-content p { color: var(--text-soft); margin-bottom: 16px; font-size: 16px; line-height: 1.85; }
        .about-features { display: grid; grid-template-columns: 1fr 1fr; gap: 14px; margin-top: 24px; }
        .about-feature {
            display: flex; align-items: center; gap: 10px; padding: 12px 14px;
            background: var(--bg-card); border: 1px solid var(--border); border-radius: 12px;
            font-size: 14px; font-weight: 600; box-shadow: 0 2px 8px rgba(0,0,0,.03);
        }
        .about-feature i { color: var(--accent); font-size: 16px; }

        @media (max-width: 992px) {
            .about-grid { grid-template-columns: 1fr; gap: 40px; }
        }

        /* Category Cards */
        .category-grid { display: grid; grid-template-columns: repeat(3, 1fr); gap: 28px; }
        .category-card {
            position: relative; background: var(--bg-card); border-radius: var(--radius-lg);
            overflow: hidden; box-shadow: var(--shadow); border: 1px solid var(--border);
            transition: all .35s ease; display: block; text-decoration: none;
        }
        .category-card:hover { transform: translateY(-8px); box-shadow: var(--shadow-lg); }
        .category-card-img { height: 200px; overflow: hidden; position: relative; }
        .category-card-img img { width: 100%; height: 100%; object-fit: cover; transition: transform .5s ease; }
        .category-card:hover .category-card-img img { transform: scale(1.06); }
        .category-card-img::after {
            content: ''; position: absolute; inset: 0;
            background: linear-gradient(transparent 40%, rgba(11,30,51,.65));
        }
        .category-card-tag {
            position: absolute; top: 16px; left: 16px; z-index: 2;
            background: rgba(11,30,51,.75); backdrop-filter: blur(8px); color: #fff;
            font-size: 12px; font-weight: 700; padding: 5px 12px; border-radius: 20px;
        }
        .category-card-body { padding: 24px; }
        .category-card-body h3 { font-size: 20px; font-weight: 700; margin-bottom: 8px; color: var(--text); }
        .category-card-body p { font-size: 14px; color: var(--text-soft); line-height: 1.7; margin-bottom: 16px; }
        .category-card-link {
            display: inline-flex; align-items: center; gap: 6px; font-size: 14px; font-weight: 700;
            color: var(--primary); }
        .category-card-link i { transition: transform .3s; font-size: 12px; }
        .category-card:hover .category-card-link { color: var(--accent-dark); }
        .category-card:hover .category-card-link i { transform: translateX(4px); }

        @media (max-width: 992px) {
            .category-grid { grid-template-columns: 1fr 1fr; }
        }
        @media (max-width: 600px) {
            .category-grid { grid-template-columns: 1fr; }
        }

        /* News List */
        .news-grid { display: grid; grid-template-columns: repeat(2, 1fr); gap: 28px; }
        .news-card { background: var(--bg-card); border-radius: var(--radius); overflow: hidden; box-shadow: var(--shadow); border: 1px solid var(--border); transition: all .35s ease; }
        .news-card:hover { transform: translateY(-5px); box-shadow: var(--shadow-lg); }
        .news-card-inner { display: flex; flex-direction: column; height: 100%; }
        .news-thumb { overflow: hidden; height: 180px; position: relative; }
        .news-thumb img { width: 100%; height: 100%; object-fit: cover; transition: transform .5s; }
        .news-card:hover .news-thumb img { transform: scale(1.04); }
        .news-body { padding: 20px 22px 22px; flex: 1; display: flex; flex-direction: column; }
        .news-body .badge { align-self: flex-start; margin-bottom: 10px; }
        .news-body h3 { font-size: 17px; font-weight: 700; line-height: 1.5; margin-bottom: 8px; color: var(--text); }
        .news-body h3 a:hover { color: var(--accent-dark); }
        .news-body p { font-size: 14px; color: var(--text-soft); line-height: 1.7; flex: 1; margin-bottom: 14px; display: -webkit-box; -webkit-line-clamp: 2; -webkit-box-orient: vertical; overflow: hidden; }
        .news-meta { display: flex; align-items: center; gap: 12px; font-size: 13px; color: var(--text-light); border-top: 1px solid var(--border); padding-top: 14px; }
        .news-meta i { font-size: 12px; }
        .news-empty {
            grid-column: 1 / -1; text-align: center; padding: 60px 20px; color: var(--text-light);
            background: var(--bg-card); border-radius: var(--radius); border: 2px dashed var(--border); }
        .news-empty i { font-size: 40px; display: block; margin-bottom: 14px; color: var(--text-light); }

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

        /* Stats */
        .stats-row { display: grid; grid-template-columns: repeat(4, 1fr); gap: 32px; }
        .stats-single { text-align: center; padding: 40px 24px; background: rgba(255,255,255,.04); border: 1px solid var(--border-dark); border-radius: var(--radius-lg); transition: all .35s; }
        .stats-single:hover { background: rgba(255,255,255,.08); transform: translateY(-4px); }
        .stats-single .icon { font-size: 30px; color: var(--accent); margin-bottom: 14px; }
        .stats-single .num { font-size: 44px; font-weight: 800; color: #fff; line-height: 1.2; }
        .stats-single .num span { font-size: 20px; font-weight: 600; color: var(--accent); margin-left: 2px; }
        .stats-single .label { font-size: 14px; color: rgba(255,255,255,.65); margin-top: 8px; }

        @media (max-width: 992px) {
            .stats-row { grid-template-columns: 1fr 1fr; }
        }
        @media (max-width: 480px) {
            .stats-row { grid-template-columns: 1fr; }
        }

        /* Process */
        .process-steps { display: grid; grid-template-columns: repeat(4, 1fr); gap: 28px; counter-reset: step; }
        .process-step { position: relative; background: var(--bg-card); border-radius: var(--radius); padding: 28px 22px; box-shadow: var(--shadow); border: 1px solid var(--border); }
        .process-step::before {
            counter-increment: step; content: "0" counter(step);
            position: absolute; top: -18px; left: 22px;
            background: var(--primary); color: var(--accent); font-size: 14px; font-weight: 800;
            width: 36px; height: 36px; border-radius: 10px; display: flex; align-items: center; justify-content: center;
            box-shadow: 0 4px 10px rgba(11,30,51,.3);
        }
        .process-step .icon { width: 52px; height: 52px; border-radius: 14px; background: rgba(240,185,11,.12); color: #b88a00; display: flex; align-items: center; justify-content: center; font-size: 20px; margin-bottom: 16px; }
        .process-step h3 { font-size: 17px; font-weight: 700; margin-bottom: 8px; }
        .process-step p { font-size: 14px; color: var(--text-soft); line-height: 1.6; }

        @media (max-width: 992px) {
            .process-steps { grid-template-columns: 1fr 1fr; .process-step { margin-bottom: 20px; } }
        }
        @media (max-width: 520px) {
            .process-steps { grid-template-columns: 1fr; }
        }

        /* FAQ */
        .faq-list { max-width: 820px; margin: 0 auto; }
        .faq-item {
            background: var(--bg-card); border: 1px solid var(--border); border-radius: var(--radius);
            margin-bottom: 14px; overflow: hidden; box-shadow: 0 2px 10px rgba(0,0,0,.03);
        }
        .faq-item summary {
            display: flex; align-items: center; justify-content: space-between; gap: 16px;
            padding: 20px 24px; cursor: pointer; font-size: 16px; font-weight: 600; color: var(--text);
            list-style: none; transition: background .25s;
        }
        .faq-item summary:hover { background: rgba(240,185,11,.05); }
        .faq-item summary::-webkit-details-marker { display: none; }
        .faq-item .faq-icon {
            width: 30px; height: 30px; border-radius: 50%; background: rgba(240,185,11,.15);
            display: flex; align-items: center; justify-content: center; color: #b88a00; font-size: 14px;
            flex-shrink: 0; transition: transform .3s;
        }
        .faq-item[open] .faq-icon { transform: rotate(45deg); background: var(--accent); color: var(--primary); }
        .faq-item .faq-answer { padding: 0 24px 22px; font-size: 15px; color: var(--text-soft); line-height: 1.8; }

        /* CTA */
        .cta-wrap {
            background-image: linear-gradient(135deg, rgba(9,23,39,.9), rgba(28,58,94,.85)), url('/assets/images/backpic/back-2.png');
            background-size: cover; background-position: center;
            border-radius: var(--radius-lg); padding: 70px 60px; text-align: center; position: relative; overflow: hidden;
        }
        .cta-wrap::before {
            content: ''; position: absolute; width: 320px; height: 320px; border-radius: 50%;
            background: radial-gradient(circle, rgba(240,185,11,.18), transparent 65%); top: -100px; right: -60px;
        }
        .cta-wrap h2 { font-size: 34px; font-weight: 800; color: #fff; margin-bottom: 14px; }
        .cta-wrap p { font-size: 16px; color: rgba(255,255,255,.78); max-width: 580px; margin: 0 auto 28px; }
        .cta-wrap .btn { position: relative; z-index: 2; }

        @media (max-width: 768px) {
            .cta-wrap { padding: 40px 24px; }
            .cta-wrap h2 { font-size: 26px; }
        }

        /* Footer */
        .site-footer { background: var(--bg-dark); color: rgba(255,255,255,.7); padding-top: 60px; border-top: 1px solid rgba(255,255,255,.05); }
        .footer-top { display: grid; grid-template-columns: 1.4fr 1fr 1fr; gap: 48px; padding-bottom: 44px; }
        .footer-brand .logo { margin-bottom: 16px; }
        .footer-brand p { font-size: 14px; line-height: 1.8; color: rgba(255,255,255,.6); max-width: 340px; }
        .footer-links h4 { color: #fff; font-size: 15px; font-weight: 700; margin-bottom: 16px; }
        .footer-links ul { list-style: none; }
        .footer-links li { margin-bottom: 10px; }
        .footer-links a { font-size: 14px; color: rgba(255,255,255,.6); transition: color .3s; }
        .footer-links a:hover { color: var(--accent); }
        .footer-bottom {
            border-top: 1px solid rgba(255,255,255,.06); padding: 22px 0;
            display: flex; align-items: center; justify-content: space-between; gap: 16px; flex-wrap: wrap;
            font-size: 13px; color: rgba(255,255,255,.4);
        }
        .footer-bottom a { color: rgba(255,255,255,.5); }
        .footer-bottom a:hover { color: var(--accent); }

        @media (max-width: 992px) {
            .footer-top { grid-template-columns: 1fr 1fr; }
            .footer-brand { grid-column: 1 / -1; }
        }
        @media (max-width: 520px) {
            .footer-top { grid-template-columns: 1fr; }
            .footer-bottom { flex-direction: column; text-align: center; }
        }

        .section-head-badge {
            display: inline-block; padding: 5px 18px; border-radius: 24px;
            background: rgba(240,185,11,.13); color: #b88a00; font-size: 13px; font-weight: 700;
            letter-spacing: 1px; margin-bottom: 14px;
        }
        .divider { height: 1px; background: var(--border); margin: 0 auto; max-width: 1240px; }

        @media (max-width: 768px) {
            :root { --space: 56px; }
            .section-title { font-size: 27px; }
            .section-head { margin-bottom: 36px; }
        }

/* roulang page: category1 */
:root {
  --primary: #1e5eff;
  --primary-deep: #1648c9;
  --primary-soft: #eaf0ff;
  --accent: #00e0b8;
  --accent-soft: #e4fbf5;
  --dark: #0a1628;
  --dark-2: #101f36;
  --dark-3: #16294a;
  --light: #f4f7fb;
  --white: #ffffff;
  --text: #1a2b44;
  --text-weak: #5b6b82;
  --border: #e3e9f2;
  --radius: 20px;
  --radius-sm: 12px;
  --radius-lg: 28px;
  --shadow: 0 12px 40px rgba(15, 35, 70, 0.08);
  --shadow-lg: 0 24px 60px rgba(15, 35, 70, 0.14);
  --space-section: 110px;
  --header-h: 84px;
}

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

html {
  scroll-behavior: smooth;
}

body {
  font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", "PingFang SC", "Hiragino Sans GB", "Microsoft YaHei", sans-serif;
  font-size: 16px;
  line-height: 1.7;
  color: var(--text);
  background: var(--light);
  -webkit-font-smoothing: antialiased;
}

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

a {
  color: inherit;
  text-decoration: none;
  transition: color 0.25s ease, background 0.25s ease, border-color 0.25s ease, box-shadow 0.25s ease, transform 0.25s ease;
}

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

ul {
  list-style: none;
}

.container {
  width: 100%;
  max-width: 1240px;
  margin: 0 auto;
  padding: 0 32px;
}

/* ===== Header ===== */
.site-header {
  position: sticky;
  top: 0;
  z-index: 100;
  background: rgba(255, 255, 255, 0.88);
  backdrop-filter: blur(14px);
  -webkit-backdrop-filter: blur(14px);
  border-bottom: 1px solid rgba(227, 233, 242, 0.8);
  box-shadow: 0 4px 24px rgba(15, 35, 70, 0.04);
}

.header-inner {
  display: flex;
  align-items: center;
  gap: 28px;
  height: var(--header-h);
}

.logo {
  display: flex;
  align-items: center;
  gap: 10px;
  flex-shrink: 0;
}

.logo-icon {
  width: 42px;
  height: 42px;
  border-radius: 13px;
  background: linear-gradient(135deg, var(--primary) 0%, #4e8bff 100%);
  display: flex;
  align-items: center;
  justify-content: center;
  color: #fff;
  font-size: 19px;
  box-shadow: 0 6px 18px rgba(30, 94, 255, 0.32);
  transition: transform 0.3s ease;
}

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

.logo-text {
  font-size: 20px;
  font-weight: 800;
  letter-spacing: 0.5px;
  color: var(--dark);
  line-height: 1.2;
}

.logo-text span {
  display: block;
  font-size: 11px;
  font-weight: 600;
  color: var(--primary);
  letter-spacing: 3px;
  text-transform: uppercase;
}

.nav-search {
  flex: 1;
  max-width: 440px;
  margin: 0 auto;
  display: flex;
  align-items: center;
  gap: 10px;
  background: var(--light);
  border: 1px solid var(--border);
  border-radius: 50px;
  padding: 10px 20px;
  transition: border-color 0.3s ease, box-shadow 0.3s ease;
}

.nav-search:focus-within {
  border-color: var(--primary);
  box-shadow: 0 0 0 4px rgba(30, 94, 255, 0.12);
  background: var(--white);
}

.nav-search i {
  color: var(--text-weak);
  font-size: 15px;
}

.nav-search input {
  flex: 1;
  border: none;
  background: transparent;
  color: var(--text);
  font-size: 15px;
}

.nav-search input::placeholder {
  color: #9aa8b8;
}

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

.main-nav a {
  padding: 9px 18px;
  border-radius: 50px;
  font-size: 15px;
  font-weight: 500;
  color: var(--text-weak);
  position: relative;
  white-space: nowrap;
}

.main-nav a:hover {
  color: var(--primary);
  background: var(--primary-soft);
}

.main-nav a.active {
  color: var(--primary);
  background: var(--primary-soft);
  font-weight: 600;
}

.nav-toggle {
  display: none;
  width: 44px;
  height: 44px;
  border-radius: 12px;
  background: var(--light);
  color: var(--text);
  font-size: 18px;
  cursor: pointer;
  align-items: center;
  justify-content: center;
  border: 1px solid var(--border);
  transition: all 0.3s ease;
}

.nav-toggle:hover {
  background: var(--primary-soft);
  color: var(--primary);
}

/* ===== Hero ===== */
.page-hero {
  position: relative;
  padding: 100px 0 90px;
  background: linear-gradient(135deg, rgba(10, 22, 40, 0.92) 0%, rgba(16, 45, 98, 0.82) 100%), url('/assets/images/backpic/back-1.png') center/cover no-repeat;
  color: #fff;
  overflow: hidden;
}

.page-hero::after {
  content: '';
  position: absolute;
  right: -120px;
  bottom: -160px;
  width: 420px;
  height: 420px;
  border-radius: 50%;
  background: radial-gradient(circle, rgba(0, 224, 184, 0.3) 0%, transparent 70%);
}

.breadcrumb {
  display: flex;
  align-items: center;
  gap: 8px;
  font-size: 14px;
  color: rgba(255, 255, 255, 0.7);
  margin-bottom: 24px;
}

.breadcrumb a {
  color: rgba(255, 255, 255, 0.7);
  transition: color 0.25s ease;
}

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

.breadcrumb i {
  font-size: 11px;
  opacity: 0.6;
}

.hero-content {
  max-width: 780px;
  position: relative;
  z-index: 2;
}

.hero-badge {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  background: rgba(255, 255, 255, 0.12);
  border: 1px solid rgba(255, 255, 255, 0.2);
  backdrop-filter: blur(8px);
  border-radius: 50px;
  padding: 8px 18px;
  font-size: 13px;
  font-weight: 600;
  color: var(--accent);
  letter-spacing: 1px;
  margin-bottom: 20px;
}

.page-hero h1 {
  font-size: 46px;
  font-weight: 800;
  line-height: 1.25;
  margin-bottom: 18px;
  letter-spacing: 1px;
}

.page-hero p {
  font-size: 17px;
  line-height: 1.8;
  color: rgba(255, 255, 255, 0.86);
  max-width: 620px;
  margin-bottom: 32px;
}

.hero-actions {
  display: flex;
  flex-wrap: wrap;
  gap: 14px;
}

.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 10px;
  padding: 14px 30px;
  border-radius: 50px;
  font-size: 15px;
  font-weight: 600;
  cursor: pointer;
  transition: all 0.3s ease;
  border: 1px solid transparent;
}

.btn-primary {
  background: var(--primary);
  color: #fff;
  box-shadow: 0 10px 28px rgba(30, 94, 255, 0.32);
}

.btn-primary:hover {
  background: var(--primary-deep);
  transform: translateY(-3px);
  box-shadow: 0 16px 36px rgba(30, 94, 255, 0.4);
}

.btn-outline-light {
  background: rgba(255, 255, 255, 0.1);
  color: #fff;
  border-color: rgba(255, 255, 255, 0.35);
  backdrop-filter: blur(6px);
}

.btn-outline-light:hover {
  background: rgba(255, 255, 255, 0.2);
  border-color: #fff;
  transform: translateY(-3px);
}

/* ===== Section 通用 ===== */
.section {
  padding: var(--space-section) 0;
}

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

.section-head {
  display: flex;
  align-items: flex-end;
  justify-content: space-between;
  gap: 30px;
  margin-bottom: 48px;
}

.section-title-wrap {
  max-width: 640px;
}

.section-tagline {
  display: inline-block;
  font-size: 13px;
  font-weight: 700;
  color: var(--primary);
  background: var(--primary-soft);
  border-radius: 50px;
  padding: 6px 16px;
  letter-spacing: 2px;
  margin-bottom: 14px;
}

.section-title {
  font-size: 34px;
  font-weight: 800;
  line-height: 1.35;
  color: var(--dark);
  letter-spacing: 0.5px;
}

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

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

.step-card {
  background: var(--white);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  padding: 36px 28px;
  position: relative;
  transition: all 0.3s ease;
  box-shadow: var(--shadow);
}

.step-card:hover {
  transform: translateY(-8px);
  box-shadow: var(--shadow-lg);
  border-color: rgba(30, 94, 255, 0.25);
}

.step-num {
  font-size: 13px;
  font-weight: 800;
  letter-spacing: 2px;
  color: var(--primary);
  background: var(--primary-soft);
  display: inline-flex;
  align-items: center;
  padding: 5px 14px;
  border-radius: 50px;
  margin-bottom: 18px;
}

.step-card h3 {
  font-size: 20px;
  font-weight: 700;
  color: var(--dark);
  margin-bottom: 12px;
}

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

/* ===== 分类卡片 ===== */
.category-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 28px;
}

.category-card {
  background: var(--white);
  border-radius: var(--radius-lg);
  overflow: hidden;
  border: 1px solid var(--border);
  box-shadow: var(--shadow);
  transition: transform 0.35s ease, box-shadow 0.35s ease, border-color 0.35s ease;
  display: flex;
  flex-direction: column;
}

.category-card:hover {
  transform: translateY(-10px);
  box-shadow: var(--shadow-lg);
  border-color: rgba(30, 94, 255, 0.2);
}

.category-card .cover {
  position: relative;
  overflow: hidden;
  aspect-ratio: 16 / 10;
}

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

.category-card:hover .cover img {
  transform: scale(1.06);
}

.category-card .cover::after {
  content: '';
  position: absolute;
  inset: 0;
  background: linear-gradient(to top, rgba(10, 22, 40, 0.5) 0%, transparent 50%);
}

.category-badge {
  position: absolute;
  left: 16px;
  bottom: 16px;
  background: rgba(255, 255, 255, 0.92);
  color: var(--dark);
  font-size: 13px;
  font-weight: 700;
  padding: 6px 14px;
  border-radius: 50px;
  z-index: 2;
}

.category-body {
  padding: 26px;
  flex: 1;
  display: flex;
  flex-direction: column;
}

.category-body h3 {
  font-size: 20px;
  font-weight: 700;
  color: var(--dark);
  margin-bottom: 10px;
}

.category-body p {
  font-size: 14px;
  color: var(--text-weak);
  line-height: 1.7;
  flex: 1;
}

.category-link {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  margin-top: 18px;
  font-size: 14px;
  font-weight: 600;
  color: var(--primary);
}

.category-link i {
  transition: transform 0.25s ease;
}

.category-card:hover .category-link i {
  transform: translateX(4px);
}

/* ===== 内容列表 ===== */
.knowledge-section {
  background: var(--dark);
  color: #fff;
  position: relative;
  overflow: hidden;
}

.knowledge-section::before {
  content: '';
  position: absolute;
  top: -100px;
  left: -100px;
  width: 300px;
  height: 300px;
  border-radius: 50%;
  background: radial-gradient(circle, rgba(30, 94, 255, 0.25) 0%, transparent 70%);
}

.knowledge-section .section-title {
  color: #fff;
}

.knowledge-section .section-desc {
  color: rgba(255, 255, 255, 0.65);
}

.knowledge-section .section-tagline {
  background: rgba(30, 94, 255, 0.2);
  color: #8ab0ff;
}

.article-list {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 24px;
}

.article-card {
  background: rgba(255, 255, 255, 0.04);
  border: 1px solid rgba(255, 255, 255, 0.1);
  border-radius: var(--radius);
  padding: 28px;
  display: flex;
  gap: 20px;
  align-items: flex-start;
  transition: all 0.3s ease;
  backdrop-filter: blur(8px);
}

.article-card:hover {
  background: rgba(255, 255, 255, 0.08);
  border-color: rgba(0, 224, 184, 0.4);
  transform: translateY(-4px);
}

.article-card .thumb {
  width: 100px;
  height: 100px;
  border-radius: 14px;
  overflow: hidden;
  flex-shrink: 0;
  position: relative;
}

.article-card .thumb img {
  width: 100%;
  height: 100%;
  object-fit: cover;
}

.article-card .thumb::after {
  content: '';
  position: absolute;
  inset: 0;
  border: 1px solid rgba(255, 255, 255, 0.08);
  border-radius: 14px;
}

.article-card .tag {
  display: inline-block;
  font-size: 12px;
  font-weight: 600;
  color: var(--accent);
  background: rgba(0, 224, 184, 0.12);
  border-radius: 50px;
  padding: 4px 12px;
  margin-bottom: 10px;
  letter-spacing: 1px;
}

.article-card h3 {
  font-size: 18px;
  font-weight: 700;
  color: #fff;
  margin-bottom: 8px;
  line-height: 1.5;
}

.article-card p {
  font-size: 14px;
  color: rgba(255, 255, 255, 0.6);
  line-height: 1.7;
}

/* ===== 数据统计 ===== */
.stats-section {
  padding: var(--space-section) 0;
  background: var(--white);
}

.stats-grid {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 24px;
}

.stat-card {
  text-align: center;
  padding: 40px 24px;
  border-radius: var(--radius);
  background: var(--light);
  border: 1px solid var(--border);
  transition: all 0.3s ease;
}

.stat-card:hover {
  background: var(--primary-soft);
  border-color: rgba(30, 94, 255, 0.3);
  transform: translateY(-4px);
}

.stat-card .num {
  font-size: 42px;
  font-weight: 800;
  color: var(--primary);
  line-height: 1.2;
  margin-bottom: 10px;
}

.stat-card .num span {
  font-size: 24px;
}

.stat-card .label {
  font-size: 15px;
  color: var(--text-weak);
  font-weight: 500;
}

/* ===== FAQ ===== */
.faq-section {
  background: var(--light);
}

.faq-list {
  max-width: 860px;
  margin: 0 auto;
  display: flex;
  flex-direction: column;
  gap: 16px;
}

.faq-item {
  background: var(--white);
  border: 1px solid var(--border);
  border-radius: var(--radius-sm);
  padding: 0;
  overflow: hidden;
  transition: border-color 0.3s ease, box-shadow 0.3s ease;
}

.faq-item:hover {
  border-color: rgba(30, 94, 255, 0.25);
  box-shadow: var(--shadow);
}

.faq-question {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 16px;
  padding: 22px 28px;
  cursor: pointer;
  font-size: 16px;
  font-weight: 600;
  color: var(--dark);
}

.faq-question i {
  color: var(--primary);
  font-size: 14px;
  transition: transform 0.3s ease;
  flex-shrink: 0;
}

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

.faq-answer {
  max-height: 0;
  overflow: hidden;
  transition: max-height 0.35s ease;
  padding: 0 28px;
}

.faq-item.open .faq-answer {
  max-height: 300px;
  padding: 0 28px 22px;
}

.faq-answer p {
  font-size: 15px;
  color: var(--text-weak);
  line-height: 1.8;
  padding-top: 4px;
  border-top: 1px dashed var(--border);
}

/* ===== CTA ===== */
.cta-section {
  padding: var(--space-section) 0;
  background: linear-gradient(135deg, var(--dark) 0%, var(--dark-2) 100%);
  position: relative;
  overflow: hidden;
}

.cta-section::before {
  content: '';
  position: absolute;
  right: 0;
  top: 0;
  width: 50%;
  height: 100%;
  background: url('/assets/images/backpic/back-2.png') center/cover no-repeat;
  opacity: 0.2;
}

.cta-inner {
  text-align: center;
  position: relative;
  z-index: 2;
  max-width: 700px;
  margin: 0 auto;
}

.cta-inner h2 {
  font-size: 36px;
  font-weight: 800;
  color: #fff;
  margin-bottom: 16px;
}

.cta-inner p {
  font-size: 16px;
  color: rgba(255, 255, 255, 0.7);
  margin-bottom: 32px;
}

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

.btn-accent {
  background: var(--accent);
  color: var(--dark);
  box-shadow: 0 10px 30px rgba(0, 224, 184, 0.35);
}

.btn-accent:hover {
  background: #00c9a5;
  transform: translateY(-3px);
  box-shadow: 0 16px 40px rgba(0, 224, 184, 0.45);
}

/* ===== Footer ===== */
.site-footer {
  background: var(--dark);
  color: rgba(255, 255, 255, 0.75);
  padding: 70px 0 30px;
}

.footer-top {
  display: grid;
  grid-template-columns: 1.4fr 1fr 1fr;
  gap: 60px;
  padding-bottom: 48px;
  border-bottom: 1px solid rgba(255, 255, 255, 0.1);
}

.footer-brand .logo {
  margin-bottom: 18px;
}

.footer-brand .logo-text {
  color: #fff;
}

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

.footer-brand p {
  font-size: 14px;
  line-height: 1.8;
  color: rgba(255, 255, 255, 0.55);
  max-width: 320px;
}

.footer-links h4 {
  font-size: 16px;
  font-weight: 700;
  color: #fff;
  margin-bottom: 20px;
}

.footer-links ul {
  display: flex;
  flex-direction: column;
  gap: 12px;
}

.footer-links a {
  font-size: 14px;
  color: rgba(255, 255, 255, 0.55);
  transition: all 0.25s ease;
}

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

.footer-bottom {
  padding-top: 30px;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 16px;
  font-size: 13px;
  color: rgba(255, 255, 255, 0.4);
}

.footer-bottom a {
  color: rgba(255, 255, 255, 0.55);
}

.footer-bottom a:hover {
  color: var(--accent);
}

/* ===== 响应式 ===== */
@media (max-width: 1024px) {
  .steps-grid {
    grid-template-columns: repeat(2, 1fr);
  }

  .category-grid {
    grid-template-columns: repeat(2, 1fr);
  }

  .stats-grid {
    grid-template-columns: repeat(2, 1fr);
  }

  .footer-top {
    grid-template-columns: 1fr 1fr;
    gap: 40px;
  }

  .nav-search {
    max-width: 260px;
  }

  .main-nav {
    position: fixed;
    top: var(--header-h);
    left: 0;
    right: 0;
    background: var(--white);
    flex-direction: column;
    align-items: stretch;
    padding: 20px 32px 30px;
    gap: 4px;
    border-bottom: 1px solid var(--border);
    box-shadow: 0 20px 40px rgba(15, 35, 70, 0.1);
    transform: translateY(-120%);
    transition: transform 0.35s ease;
    z-index: 99;
  }

  .main-nav.open {
    transform: translateY(0);
  }

  .main-nav a {
    padding: 14px 20px;
    border-radius: 12px;
    font-size: 16px;
  }

  .nav-toggle {
    display: flex;
  }
}

@media (max-width: 768px) {
  :root {
    --space-section: 80px;
  }

  .container {
    padding: 0 20px;
  }

  .header-inner {
    gap: 12px;
    height: 72px;
  }

  .logo-text {
    font-size: 17px;
  }

  .logo-icon {
    width: 38px;
    height: 38px;
    font-size: 17px;
  }

  .nav-search {
    display: none;
  }

  .nav-toggle {
    margin-left: auto;
  }

  .page-hero {
    padding: 70px 0 64px;
  }

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

  .page-hero p {
    font-size: 16px;
  }

  .section-title {
    font-size: 28px;
  }

  .section-head {
    flex-direction: column;
    align-items: flex-start;
    gap: 16px;
  }

  .steps-grid {
    grid-template-columns: 1fr;
  }

  .category-grid {
    grid-template-columns: 1fr;
  }

  .article-list {
    grid-template-columns: 1fr;
  }

  .article-card {
    padding: 22px;
    flex-direction: column;
  }

  .article-card .thumb {
    width: 100%;
    height: 140px;
  }

  .stats-grid {
    grid-template-columns: 1fr 1fr;
    gap: 16px;
  }

  .stat-card .num {
    font-size: 34px;
  }

  .footer-top {
    grid-template-columns: 1fr;
    gap: 36px;
  }

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

  .cta-inner h2 {
    font-size: 28px;
  }

  .faq-question {
    padding: 18px 20px;
    font-size: 15px;
  }

  .faq-answer {
    padding: 0 20px;
  }

  .faq-item.open .faq-answer {
    padding: 0 20px 18px;
  }
}

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

  .category-grid {
    grid-template-columns: 1fr;
  }

  .steps-grid {
    grid-template-columns: 1fr;
  }

  .hero-actions {
    flex-direction: column;
    width: 100%;
  }

  .hero-actions .btn {
    width: 100%;
  }

  .cta-actions {
    flex-direction: column;
    width: 100%;
  }

  .cta-actions .btn {
    width: 100%;
  }
}

/* roulang page: article */
:root {
    --primary: #6d28d9;
    --primary-dark: #5b21b6;
    --primary-light: #ede9fe;
    --accent: #f59e0b;
    --accent-dark: #d97706;
    --bg: #f8fafc;
    --bg-deep: #0f172a;
    --bg-card: #ffffff;
    --text: #1e293b;
    --text-light: #64748b;
    --border: #e2e8f0;
    --radius: 16px;
    --radius-sm: 10px;
    --shadow: 0 4px 24px rgba(109, 40, 217, 0.08);
    --shadow-lg: 0 12px 40px rgba(109, 40, 217, 0.14);
    --space: 24px;
    --font: 'Inter', 'PingFang SC', 'Microsoft YaHei', 'Noto Sans SC', sans-serif;
}

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

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

body {
    font-family: var(--font);
    background: var(--bg);
    color: var(--text);
    line-height: 1.75;
    font-size: 16px;
}

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

a {
    color: var(--primary);
    text-decoration: none;
    transition: color 0.3s ease;
}

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

ul, ol {
    list-style: none;
}

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

.container {
    width: 100%;
    max-width: 1200px;
    margin: 0 auto;
    padding: 0 24px;
}

.container-narrow {
    max-width: 860px;
}

/* ===== Header & Nav ===== */
.site-header {
    position: sticky;
    top: 0;
    z-index: 1000;
    background: rgba(255, 255, 255, 0.94);
    backdrop-filter: blur(14px);
    -webkit-backdrop-filter: blur(14px);
    border-bottom: 1px solid var(--border);
    box-shadow: 0 2px 20px rgba(15, 23, 42, 0.06);
}

.header-inner {
    display: flex;
    align-items: center;
    gap: 24px;
    height: 74px;
}

.logo {
    display: flex;
    align-items: center;
    gap: 10px;
    flex-shrink: 0;
}

.logo-icon {
    width: 40px;
    height: 40px;
    border-radius: 12px;
    background: linear-gradient(135deg, var(--primary), var(--primary-dark));
    color: #fff;
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 18px;
    box-shadow: 0 4px 14px rgba(109, 40, 217, 0.35);
}

.logo-text {
    font-size: 20px;
    font-weight: 800;
    color: var(--text);
    letter-spacing: 0.5px;
    white-space: nowrap;
}

.logo-text span {
    color: var(--primary);
}

.nav-search {
    flex: 1;
    max-width: 460px;
    position: relative;
}

.nav-search > i {
    position: absolute;
    left: 16px;
    top: 50%;
    transform: translateY(-50%);
    color: var(--text-light);
    font-size: 15px;
    pointer-events: none;
}

.nav-search input {
    width: 100%;
    height: 44px;
    border: 2px solid var(--border);
    border-radius: 999px;
    padding: 0 18px 0 44px;
    font-size: 14px;
    color: var(--text);
    background: var(--bg);
    transition: border-color 0.3s, box-shadow 0.3s;
}

.nav-search input:focus {
    outline: none;
    border-color: var(--primary);
    box-shadow: 0 0 0 4px rgba(109, 40, 217, 0.12);
    background: #fff;
}

.nav-search input::placeholder {
    color: #94a3b8;
}

.main-nav {
    display: flex;
    align-items: center;
    gap: 4px;
    flex-shrink: 0;
}

.main-nav a {
    padding: 9px 16px;
    border-radius: 999px;
    font-size: 14px;
    font-weight: 500;
    color: var(--text-light);
    transition: all 0.3s ease;
    white-space: nowrap;
}

.main-nav a:hover {
    color: var(--primary);
    background: rgba(109, 40, 217, 0.08);
}

.main-nav a.active {
    color: #fff;
    background: var(--primary);
    box-shadow: 0 4px 14px rgba(109, 40, 217, 0.35);
}

.nav-toggle {
    display: none;
    width: 42px;
    height: 42px;
    border-radius: 10px;
    align-items: center;
    justify-content: center;
    font-size: 18px;
    color: var(--text);
    background: var(--bg);
    border: 1px solid var(--border);
    cursor: pointer;
    transition: all 0.3s;
}

.nav-toggle:hover {
    background: var(--primary-light);
    color: var(--primary);
}

/* ===== Breadcrumb ===== */
.breadcrumb {
    display: flex;
    align-items: center;
    flex-wrap: wrap;
    gap: 8px;
    font-size: 14px;
    margin-bottom: 24px;
    color: rgba(255, 255, 255, 0.75);
}

.breadcrumb a {
    color: rgba(255, 255, 255, 0.85);
    transition: color 0.3s;
}

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

.breadcrumb i {
    font-size: 10px;
    color: rgba(255, 255, 255, 0.5);
}

.breadcrumb span {
    color: rgba(255, 255, 255, 0.9);
    max-width: 420px;
    white-space: nowrap;
    overflow: hidden;
    text-overflow: ellipsis;
}

/* ===== Article Hero ===== */
.article-hero {
    position: relative;
    padding: 72px 0 100px;
    background-size: cover;
    background-position: center;
    background-color: var(--bg-deep);
    color: #fff;
}

.article-hero::before {
    content: '';
    position: absolute;
    inset: 0;
    background: linear-gradient(135deg, rgba(15, 23, 42, 0.94) 0%, rgba(109, 40, 217, 0.85) 100%);
    z-index: 1;
}

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

.article-hero-inner {
    max-width: 860px;
}

.article-meta {
    display: flex;
    align-items: center;
    flex-wrap: wrap;
    gap: 16px;
    margin-bottom: 20px;
}

.article-meta .meta-item {
    font-size: 14px;
    color: rgba(255, 255, 255, 0.8);
    display: inline-flex;
    align-items: center;
    gap: 6px;
}

.article-hero h1 {
    font-size: 42px;
    font-weight: 800;
    line-height: 1.3;
    margin-bottom: 16px;
    letter-spacing: 0.5px;
}

.article-desc {
    font-size: 17px;
    color: rgba(255, 255, 255, 0.85);
    line-height: 1.8;
    max-width: 720px;
    margin-bottom: 28px;
}

.article-actions {
    display: flex;
    flex-wrap: wrap;
    gap: 12px;
}

/* ===== Buttons ===== */
.btn {
    display: inline-flex;
    align-items: center;
    gap: 8px;
    padding: 13px 28px;
    border-radius: 999px;
    font-size: 15px;
    font-weight: 600;
    cursor: pointer;
    transition: all 0.3s ease;
    border: 2px solid transparent;
    line-height: 1.4;
}

.btn i {
    font-size: 14px;
}

.btn-primary {
    background: var(--primary);
    color: #fff;
    box-shadow: 0 4px 14px rgba(109, 40, 217, 0.3);
}

.btn-primary:hover {
    background: var(--primary-dark);
    color: #fff;
    transform: translateY(-2px);
    box-shadow: 0 8px 24px rgba(109, 40, 217, 0.4);
}

.btn-ghost {
    background: transparent;
    color: rgba(255, 255, 255, 0.9);
    border-color: rgba(255, 255, 255, 0.4);
}

.btn-ghost:hover {
    border-color: #fff;
    color: #fff;
    background: rgba(255, 255, 255, 0.1);
    transform: translateY(-2px);
}

.btn-accent {
    background: var(--accent);
    color: var(--bg-deep);
    box-shadow: 0 4px 14px rgba(245, 158, 11, 0.35);
}

.btn-accent:hover {
    background: var(--accent-dark);
    color: #fff;
    transform: translateY(-2px);
    box-shadow: 0 8px 24px rgba(245, 158, 11, 0.45);
}

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

.btn-outline:hover {
    background: var(--primary);
    color: #fff;
}

/* ===== Badge & Tag ===== */
.badge {
    display: inline-flex;
    align-items: center;
    gap: 6px;
    padding: 5px 14px;
    border-radius: 999px;
    font-size: 13px;
    font-weight: 600;
    background: rgba(255, 255, 255, 0.18);
    color: #fff;
    backdrop-filter: blur(4px);
    border: 1px solid rgba(255, 255, 255, 0.2);
}

.tag {
    display: inline-flex;
    align-items: center;
    padding: 6px 14px;
    border-radius: 999px;
    font-size: 13px;
    font-weight: 500;
    background: var(--primary-light);
    color: var(--primary-dark);
    border: 1px solid rgba(109, 40, 217, 0.15);
    transition: all 0.3s;
    cursor: default;
}

.tag:hover {
    background: var(--primary);
    color: #fff;
}

.tag-label {
    font-size: 14px;
    font-weight: 600;
    color: var(--text);
    display: inline-flex;
    align-items: center;
    gap: 6px;
}

/* ===== Article Content ===== */
.article-content-section {
    padding-top: 0;
}

.article-card {
    background: var(--bg-card);
    border-radius: var(--radius);
    box-shadow: var(--shadow);
    overflow: hidden;
    margin-top: -56px;
    position: relative;
    border: 1px solid var(--border);
}

.article-cover img {
    width: 100%;
    height: 400px;
    object-fit: cover;
}

.article-body {
    padding: 56px;
}

.article-body h2 {
    font-size: 26px;
    font-weight: 700;
    margin: 36px 0 16px;
    color: var(--text);
    line-height: 1.4;
    padding-left: 16px;
    border-left: 4px solid var(--primary);
    border-radius: 2px;
}

.article-body h3 {
    font-size: 20px;
    font-weight: 700;
    margin: 28px 0 12px;
    color: var(--text);
}

.article-body p {
    margin: 16px 0;
    color: var(--text-light);
    line-height: 1.9;
    font-size: 16px;
}

.article-body ul,
.article-body ol {
    margin: 16px 0;
    padding-left: 24px;
    color: var(--text-light);
    line-height: 1.9;
}

.article-body ul li {
    list-style: disc;
    margin-bottom: 6px;
}

.article-body ol li {
    list-style: decimal;
    margin-bottom: 6px;
}

.article-body blockquote {
    margin: 24px 0;
    padding: 20px 24px;
    background: var(--primary-light);
    border-left: 4px solid var(--primary);
    border-radius: 0 var(--radius-sm) var(--radius-sm) 0;
    color: var(--primary-dark);
    font-size: 16px;
    line-height: 1.8;
}

.article-body img {
    border-radius: var(--radius-sm);
    margin: 24px 0;
    box-shadow: var(--shadow);
}

.article-body a {
    color: var(--primary);
    text-decoration: underline;
    text-underline-offset: 3px;
}

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

.article-body strong {
    color: var(--text);
    font-weight: 700;
}

.article-body table {
    width: 100%;
    border-collapse: collapse;
    margin: 24px 0;
    font-size: 14px;
}

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

.article-body table th {
    background: var(--primary-light);
    color: var(--primary-dark);
    font-weight: 600;
}

.not-found {
    text-align: center;
    padding: 40px 20px;
}

.not-found i {
    font-size: 48px;
    color: var(--primary);
    margin-bottom: 16px;
    opacity: 0.6;
}

.not-found h2 {
    font-size: 28px;
    font-weight: 800;
    color: var(--text);
    margin-bottom: 12px;
}

.not-found p {
    color: var(--text-light);
    font-size: 16px;
    margin-bottom: 24px;
}

/* ===== Article Tags ===== */
.article-tags-section {
    padding: 40px 0 0;
}

.article-tags-bar {
    display: flex;
    align-items: center;
    justify-content: space-between;
    flex-wrap: wrap;
    gap: 16px;
    background: var(--bg-card);
    border: 1px solid var(--border);
    border-radius: var(--radius);
    padding: 20px 24px;
    box-shadow: var(--shadow);
}

.tag-group {
    display: flex;
    align-items: center;
    flex-wrap: wrap;
    gap: 10px;
}

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

.share-btn {
    width: 38px;
    height: 38px;
    border-radius: 10px;
    display: flex;
    align-items: center;
    justify-content: center;
    background: var(--bg);
    color: var(--text-light);
    border: 1px solid var(--border);
    transition: all 0.3s;
    font-size: 15px;
}

.share-btn:hover {
    background: var(--primary);
    color: #fff;
    border-color: var(--primary);
    transform: translateY(-2px);
    box-shadow: 0 4px 12px rgba(109, 40, 217, 0.25);
}

/* ===== Article Info Cards ===== */
.article-info-section {
    padding: 48px 0 0;
}

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

.info-card {
    background: var(--bg-card);
    border: 1px solid var(--border);
    border-radius: var(--radius);
    padding: 28px 24px;
    box-shadow: var(--shadow);
    transition: all 0.3s ease;
    position: relative;
    overflow: hidden;
}

.info-card::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    height: 4px;
    background: linear-gradient(90deg, var(--primary), var(--accent));
    opacity: 0;
    transition: opacity 0.3s;
}

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

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

.info-card i {
    font-size: 28px;
    color: var(--primary);
    margin-bottom: 14px;
}

.info-card h4 {
    font-size: 16px;
    font-weight: 700;
    color: var(--text);
    margin-bottom: 8px;
}

.info-card p {
    font-size: 14px;
    color: var(--text-light);
    line-height: 1.6;
}

/* ===== Related Section ===== */
.related-section {
    padding: 72px 0 24px;
}

.section-header {
    text-align: center;
    margin-bottom: 40px;
}

.section-header h2 {
    font-size: 32px;
    font-weight: 800;
    color: var(--text);
    margin-bottom: 10px;
    letter-spacing: 0.5px;
}

.section-header p {
    font-size: 16px;
    color: var(--text-light);
    max-width: 600px;
    margin: 0 auto;
}

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

.related-card {
    background: var(--bg-card);
    border: 1px solid var(--border);
    border-radius: var(--radius);
    overflow: hidden;
    text-decoration: none;
    color: var(--text);
    box-shadow: var(--shadow);
    transition: all 0.3s ease;
    display: flex;
    flex-direction: column;
    height: 100%;
}

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

.related-card img {
    width: 100%;
    height: 200px;
    object-fit: cover;
    transition: transform 0.5s ease;
}

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

.related-body {
    padding: 24px;
    flex: 1;
    display: flex;
    flex-direction: column;
    gap: 8px;
}

.related-body .badge {
    align-self: flex-start;
    background: var(--primary-light);
    color: var(--primary-dark);
    border: none;
    font-size: 12px;
}

.related-body h3 {
    font-size: 18px;
    font-weight: 700;
    line-height: 1.5;
    color: var(--text);
}

.related-body p {
    font-size: 14px;
    color: var(--text-light);
    line-height: 1.7;
    flex: 1;
    display: -webkit-box;
    -webkit-line-clamp: 2;
    -webkit-box-orient: vertical;
    overflow: hidden;
}

.related-time {
    font-size: 13px;
    color: #94a3b8;
    display: inline-flex;
    align-items: center;
    gap: 6px;
    margin-top: 8px;
    padding-top: 12px;
    border-top: 1px solid var(--border);
}

/* ===== CTA Section ===== */
.cta-section {
    position: relative;
    padding: 96px 0;
    background-size: cover;
    background-position: center;
    margin-top: 48px;
}

.cta-section::before {
    content: '';
    position: absolute;
    inset: 0;
    background: linear-gradient(135deg, rgba(15, 23, 42, 0.95) 0%, rgba(109, 40, 217, 0.88) 100%);
}

.cta-inner {
    position: relative;
    z-index: 2;
    text-align: center;
    color: #fff;
}

.cta-inner h2 {
    font-size: 36px;
    font-weight: 800;
    margin-bottom: 16px;
    letter-spacing: 0.5px;
}

.cta-inner p {
    font-size: 17px;
    color: rgba(255, 255, 255, 0.85);
    max-width: 620px;
    margin: 0 auto 32px;
    line-height: 1.8;
}

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

/* ===== FAQ ===== */
.faq-section {
    padding: 80px 0;
}

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

.faq-item {
    background: var(--bg-card);
    border: 1px solid var(--border);
    border-radius: var(--radius-sm);
    overflow: hidden;
    box-shadow: 0 2px 10px rgba(15, 23, 42, 0.04);
    transition: box-shadow 0.3s;
}

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

.faq-item summary {
    display: flex;
    justify-content: space-between;
    align-items: center;
    padding: 22px 28px;
    cursor: pointer;
    font-weight: 600;
    font-size: 16px;
    color: var(--text);
    list-style: none;
    gap: 20px;
    transition: color 0.3s;
}

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

.faq-item summary i {
    color: var(--primary);
    font-size: 14px;
    transition: transform 0.3s;
    flex-shrink: 0;
}

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

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

.faq-item p {
    padding: 0 28px 22px;
    color: var(--text-light);
    font-size: 15px;
    line-height: 1.8;
}

/* ===== Section Spacing ===== */
.section-pad {
    padding: 72px 0;
}

/* ===== Footer ===== */
.site-footer {
    background: var(--bg-deep);
    color: rgba(255, 255, 255, 0.72);
    padding: 72px 0 0;
}

.footer-top {
    display: grid;
    grid-template-columns: 2fr 1fr 1fr;
    gap: 48px;
    padding-bottom: 48px;
    border-bottom: 1px solid rgba(255, 255, 255, 0.08);
}

.footer-brand .logo {
    margin-bottom: 18px;
}

.footer-brand .logo-text {
    color: #fff;
}

.footer-brand .logo-text span {
    color: #a78bfa;
}

.footer-brand p {
    font-size: 14px;
    line-height: 1.8;
    color: rgba(255, 255, 255, 0.6);
    max-width: 360px;
}

.footer-links h4 {
    color: #fff;
    font-size: 16px;
    font-weight: 700;
    margin-bottom: 20px;
}

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

.footer-links ul li a {
    color: rgba(255, 255, 255, 0.6);
    font-size: 14px;
    transition: all 0.3s;
}

.footer-links ul li a:hover {
    color: #fff;
    padding-left: 6px;
}

.footer-bottom {
    display: flex;
    align-items: center;
    justify-content: space-between;
    flex-wrap: wrap;
    gap: 12px;
    padding: 24px 0;
    font-size: 13px;
    color: rgba(255, 255, 255, 0.45);
}

.footer-bottom a {
    color: rgba(255, 255, 255, 0.6);
    transition: color 0.3s;
}

.footer-bottom a:hover {
    color: #fff;
}

/* ===== Responsive ===== */
@media (max-width: 1024px) {
    .header-inner {
        gap: 16px;
    }
    
    .main-nav a {
        padding: 9px 12px;
        font-size: 13px;
    }
    
    .logo-text {
        font-size: 18px;
    }
    
    .related-grid {
        grid-template-columns: repeat(2, 1fr);
    }
    
    .article-hero h1 {
        font-size: 36px;
    }
}

@media (max-width: 768px) {
    .header-inner {
        flex-wrap: wrap;
        height: auto;
        padding: 14px 24px;
        gap: 12px;
    }
    
    .nav-toggle {
        display: flex;
        margin-left: auto;
    }
    
    .nav-search {
        order: 3;
        flex: 1 1 100%;
        max-width: 100%;
    }
    
    .main-nav {
        order: 4;
        display: none;
        flex-direction: column;
        align-items: stretch;
        gap: 4px;
        width: 100%;
        padding-top: 8px;
        border-top: 1px solid var(--border);
    }
    
    .main-nav.open {
        display: flex;
    }
    
    .main-nav a {
        padding: 12px 16px;
        border-radius: 10px;
        font-size: 15px;
    }
    
    .main-nav a.active {
        box-shadow: none;
    }
    
    .article-hero {
        padding: 56px 0 80px;
    }
    
    .article-hero h1 {
        font-size: 30px;
    }
    
    .article-desc {
        font-size: 15px;
    }
    
    .article-card {
        margin-top: -40px;
    }
    
    .article-body {
        padding: 32px 24px;
    }
    
    .article-cover img {
        height: 240px;
    }
    
    .info-grid {
        grid-template-columns: 1fr;
        gap: 16px;
    }
    
    .related-grid {
        grid-template-columns: 1fr;
        gap: 20px;
    }
    
    .cta-section {
        padding: 64px 0;
    }
    
    .cta-inner h2 {
        font-size: 28px;
    }
    
    .faq-section {
        padding: 56px 0;
    }
    
    .faq-item summary {
        padding: 18px 20px;
        font-size: 15px;
    }
    
    .faq-item p {
        padding: 0 20px 18px;
    }
    
    .footer-top {
        grid-template-columns: 1fr;
        gap: 36px;
    }
    
    .article-tags-bar {
        flex-direction: column;
        align-items: flex-start;
    }
    
    .breadcrumb {
        font-size: 13px;
    }
    
    .breadcrumb span {
        max-width: 220px;
    }
}

@media (max-width: 520px) {
    .container {
        padding: 0 16px;
    }
    
    .header-inner {
        padding: 12px 16px;
    }
    
    .logo-icon {
        width: 36px;
        height: 36px;
        font-size: 16px;
    }
    
    .logo-text {
        font-size: 16px;
    }
    
    .article-hero h1 {
        font-size: 26px;
    }
    
    .article-meta {
        gap: 10px;
    }
    
    .btn {
        padding: 11px 22px;
        font-size: 14px;
    }
    
    .article-body {
        padding: 24px 16px;
    }
    
    .article-body h2 {
        font-size: 22px;
    }
    
    .article-body p {
        font-size: 15px;
    }
    
    .section-header h2 {
        font-size: 26px;
    }
    
    .cta-inner h2 {
        font-size: 24px;
    }
    
    .cta-inner p {
        font-size: 15px;
    }
    
    .related-grid {
        grid-template-columns: 1fr;
    }
    
    .footer-bottom {
        flex-direction: column;
        text-align: center;
        justify-content: center;
    }
    
    .related-card img {
        height: 180px;
    }
    
    .tag-group {
        gap: 8px;
    }
}

@media (max-width: 360px) {
    .article-actions {
        flex-direction: column;
        width: 100%;
    }
    
    .article-actions .btn {
        width: 100%;
        justify-content: center;
    }
}

/* roulang page: category2 */
:root {
  --primary: #16233d;
  --primary-light: #1f3157;
  --primary-soft: #243a66;
  --accent: #f0b23a;
  --accent-dark: #de9c22;
  --accent-soft: #fdf3de;
  --bg-body: #f5f7fb;
  --bg-white: #ffffff;
  --bg-soft: #eef1f7;
  --text-main: #1d2a3f;
  --text-body: #3e4c5e;
  --text-muted: #8291a3;
  --border-color: #e3e8f0;
  --radius-lg: 18px;
  --radius-md: 12px;
  --radius-sm: 8px;
  --shadow-card: 0 4px 20px rgba(22,35,61,.06);
  --shadow-hover: 0 12px 32px rgba(22,35,61,.12);
  --transition: all .3s ease;
}
* { margin:0; padding:0; box-sizing:border-box; }
html { scroll-behavior:smooth; }
body { font-family:'PingFang SC','Microsoft YaHei','Helvetica Neue',Arial,sans-serif; background:var(--bg-body); color:var(--text-body); line-height:1.7; font-size:16px; -webkit-font-smoothing:antialiased; }
img { max-width:100%; display:block; }
a { text-decoration:none; color:inherit; transition:var(--transition); }
button, input { font-family:inherit; }
ul { list-style:none; }
.container { max-width:1200px; margin:0 auto; padding:0 24px; }
h1,h2,h3,h4,h5 { color:var(--text-main); line-height:1.35; }
.section-title { font-size:30px; font-weight:700; color:var(--text-main); letter-spacing:.5px; margin-bottom:10px; }
.section-subtitle { font-size:16px; color:var(--text-muted); max-width:680px; margin-bottom:38px; line-height:1.7; }
.section-head { margin-bottom:40px; }

/* ===== Header ===== */
.site-header { background:var(--primary); position:sticky; top:0; z-index:1000; box-shadow:0 2px 18px rgba(0,0,0,.18); }
.header-inner { display:flex; align-items:center; gap:24px; height:72px; }
.logo { display:flex; align-items:center; gap:10px; flex-shrink:0; }
.logo-icon { width:40px; height:40px; border-radius:12px; background:linear-gradient(135deg,var(--accent) 20%,var(--accent-dark)); display:flex; align-items:center; justify-content:center; color:var(--primary); font-size:17px; box-shadow:0 4px 12px rgba(240,178,58,.3); }
.logo-text { font-size:21px; font-weight:800; color:#fff; letter-spacing:.8px; }
.logo-text span { color:var(--accent); }
.nav-search { flex:1; max-width:480px; position:relative; margin:0 auto; }
.nav-search > i { position:absolute; left:16px; top:50%; transform:translateY(-50%); color:var(--text-muted); font-size:14px; pointer-events:none; }
.nav-search input { width:100%; height:44px; border:1px solid rgba(255,255,255,.14); background:rgba(255,255,255,.08); border-radius:22px; padding:0 16px 0 44px; font-size:14px; color:#fff; transition:var(--transition); }
.nav-search input::placeholder { color:rgba(255,255,255,.5); }
.nav-search input:focus { outline:none; border-color:var(--accent); background:rgba(255,255,255,.14); box-shadow:0 0 0 4px rgba(240,178,58,.15); }
.main-nav { display:flex; align-items:center; gap:6px; margin-left:auto; }
.main-nav a { padding:8px 18px; border-radius:20px; color:rgba(255,255,255,.72); font-size:15px; font-weight:500; white-space:nowrap; }
.main-nav a:hover { color:#fff; background:rgba(255,255,255,.1); }
.main-nav a.active { color:var(--primary); background:var(--accent); font-weight:700; }
.nav-toggle { display:none; width:40px; height:40px; border-radius:8px; background:rgba(255,255,255,.08); color:#fff; font-size:18px; justify-content:center; align-items:center; margin-left:4px; }

/* ===== Page Banner ===== */
.page-banner { position:relative; padding:84px 0 76px; background:linear-gradient(135deg,var(--primary) 0%,var(--primary-light) 50%,var(--primary-soft) 100%); overflow:hidden; }
.page-banner::before { content:''; position:absolute; inset:0; background-image:url('/assets/images/backpic/back-2.png'); background-size:cover; background-position:center; opacity:.12; }
.page-banner::after { content:''; position:absolute; top:-40%; right:-15%; width:500px; height:500px; border-radius:50%; background:radial-gradient(circle,rgba(240,178,58,.18),transparent 60%); }
.page-banner .banner-content { position:relative; z-index:2; max-width:760px; }
.breadcrumb { display:flex; align-items:center; gap:8px; font-size:13px; color:rgba(255,255,255,.55); margin-bottom:18px; }
.breadcrumb a { color:rgba(255,255,255,.7); }
.breadcrumb a:hover { color:var(--accent); }
.breadcrumb i { font-size:10px; color:rgba(255,255,255,.35); }
.page-banner h1 { font-size:40px; font-weight:800; color:#fff; margin-bottom:14px; letter-spacing:1px; }
.page-banner h1 em { font-style:normal; color:var(--accent); }
.page-banner p { font-size:16px; color:rgba(255,255,255,.7); line-height:1.8; max-width:650px; }
.banner-tags { display:flex; flex-wrap:wrap; gap:10px; margin-top:24px; }
.banner-tag { display:inline-flex; align-items:center; gap:6px; padding:7px 16px; border-radius:20px; background:rgba(255,255,255,.1); border:1px solid rgba(255,255,255,.15); font-size:13px; color:rgba(255,255,255,.85); backdrop-filter:blur(8px); }
.banner-tag i { color:var(--accent); font-size:12px; }

/* ===== Intro Section ===== */
.intro-section { padding:90px 0 70px; }
.intro-grid { display:grid; grid-template-columns:1.05fr .95fr; gap:60px; align-items:center; }
.intro-copy .eyebrow { display:inline-flex; align-items:center; gap:8px; background:var(--accent-soft); color:var(--accent-dark); padding:6px 16px; border-radius:20px; font-size:13px; font-weight:600; margin-bottom:18px; }
.intro-copy h2 { font-size:30px; font-weight:700; margin-bottom:18px; }
.intro-copy h2 span { color:var(--accent-dark); }
.intro-copy p { font-size:15px; line-height:1.9; margin-bottom:16px; color:var(--text-body); }
.intro-stats { display:grid; grid-template-columns:repeat(3,1fr); gap:14px; margin-top:30px; }
.stat-item { background:var(--bg-white); border:1px solid var(--border-color); border-radius:var(--radius-md); padding:20px 16px; text-align:center; box-shadow:var(--shadow-card); }
.stat-item strong { font-size:28px; color:var(--primary); display:block; line-height:1.2; }
.stat-item span { font-size:13px; color:var(--text-muted); margin-top:6px; display:block; }
.intro-visual { position:relative; }
.intro-visual img { border-radius:var(--radius-lg); box-shadow:var(--shadow-hover); width:100%; object-fit:cover; }
.intro-visual .float-card { position:absolute; bottom:-20px; left:-20px; background:#fff; border-radius:var(--radius-md); padding:18px 22px; box-shadow:var(--shadow-hover); display:flex; align-items:center; gap:14px; border:1px solid var(--border-color); }
.float-card i { font-size:24px; color:var(--accent-dark); }
.float-card strong { font-size:18px; color:var(--text-main); display:block; line-height:1.3; }
.float-card span { font-size:13px; color:var(--text-muted); }

/* ===== Topics ===== */
.topic-section { padding:40px 0 80px; }
.topic-grid { display:grid; grid-template-columns:repeat(4,1fr); gap:24px; }
.topic-card { background:var(--bg-white); border:1px solid var(--border-color); border-radius:var(--radius-lg); padding:32px 24px; box-shadow:var(--shadow-card); transition:var(--transition); position:relative; overflow:hidden; }
.topic-card::before { content:''; position:absolute; top:0; left:0; right:0; height:4px; background:linear-gradient(90deg,var(--accent),var(--accent-dark)); opacity:0; transition:var(--transition); }
.topic-card:hover { box-shadow:var(--shadow-hover); transform:translateY(-6px); border-color:rgba(240,178,58,.4); }
.topic-card:hover::before { opacity:1; }
.topic-icon { width:56px; height:56px; border-radius:14px; background:var(--accent-soft); color:var(--accent-dark); display:flex; align-items:center; justify-content:center; font-size:22px; margin-bottom:20px; }
.topic-card h3 { font-size:18px; font-weight:700; margin-bottom:10px; }
.topic-card p { font-size:14px; color:var(--text-muted); line-height:1.75; }
.topic-card .topic-link { display:inline-flex; align-items:center; gap:6px; margin-top:16px; font-size:14px; font-weight:600; color:var(--primary); }
.topic-card .topic-link i { font-size:12px; transition:var(--transition); }
.topic-card .topic-link:hover i { transform:translateX(4px); }

/* ===== Articles ===== */
.article-section { padding:80px 0; background:var(--bg-white); border-top:1px solid var(--border-color); border-bottom:1px solid var(--border-color); }
.article-list { display:flex; flex-direction:column; gap:24px; max-width:1000px; margin:0 auto; }
.article-item { display:flex; gap:28px; background:var(--bg-body); border-radius:var(--radius-lg); padding:22px; border:1px solid var(--border-color); transition:var(--transition); align-items:center; }
.article-item:hover { box-shadow:var(--shadow-hover); border-color:rgba(240,178,58,.35); transform:translateX(4px); }
.article-thumb { width:220px; height:140px; flex-shrink:0; border-radius:var(--radius-md); overflow:hidden; position:relative; }
.article-thumb img { width:100%; height:100%; object-fit:cover; transition:transform .5s ease; }
.article-item:hover .article-thumb img { transform:scale(1.05); }
.article-thumb .thumb-tag { position:absolute; top:10px; left:10px; background:rgba(22,35,61,.85); color:#fff; font-size:12px; padding:4px 12px; border-radius:14px; backdrop-filter:blur(4px); }
.article-info { flex:1; min-width:0; }
.article-info h3 { font-size:18px; font-weight:700; margin-bottom:8px; line-height:1.5; }
.article-info h3 a:hover { color:var(--accent-dark); }
.article-info p { font-size:14px; color:var(--text-muted); margin-bottom:12px; line-height:1.75; display:-webkit-box; -webkit-line-clamp:2; -webkit-box-orient:vertical; overflow:hidden; }
.article-meta { display:flex; align-items:center; gap:16px; font-size:13px; color:var(--text-muted); }
.article-meta span { display:inline-flex; align-items:center; gap:5px; }
.article-meta i { font-size:12px; opacity:.7; }
.article-meta .view-count i { color:var(--accent-dark); }

/* ===== Steps ===== */
.steps-section { padding:85px 0 80px; }
.steps-wrap { display:grid; grid-template-columns:repeat(4,1fr); gap:20px; counter-reset:step; }
.step-card { position:relative; background:#fff; border:1px solid var(--border-color); border-radius:var(--radius-lg); padding:32px 24px 28px; box-shadow:var(--shadow-card); transition:var(--transition); }
.step-card:hover { box-shadow:var(--shadow-hover); transform:translateY(-4px); }
.step-num { counter-increment:step; font-size:13px; font-weight:800; color:var(--accent-dark); background:var(--accent-soft); width:36px; height:36px; border-radius:50%; display:flex; align-items:center; justify-content:center; margin-bottom:18px; }
.step-num::before { content:'0' counter(step); }
.step-card h3 { font-size:16px; font-weight:700; margin-bottom:10px; color:var(--text-main); }
.step-card p { font-size:13px; color:var(--text-muted); line-height:1.75; }
.step-line { position:absolute; top:50px; right:-10px; width:20px; height:2px; background:linear-gradient(90deg,var(--accent),transparent); opacity:.5; }
.step-card:last-child .step-line { display:none; }

/* ===== Tips ===== */
.tips-section { padding:80px 0; background:linear-gradient(135deg,var(--primary),var(--primary-light)); position:relative; overflow:hidden; }
.tips-section::before { content:''; position:absolute; inset:0; background-image:url('/assets/images/backpic/back-3.png'); background-size:cover; background-position:center; opacity:.08; }
.tips-section .container { position:relative; z-index:2; }
.tips-section .section-title { color:#fff; }
.tips-section .section-subtitle { color:rgba(255,255,255,.6); }
.tips-grid { display:grid; grid-template-columns:repeat(3,1fr); gap:24px; }
.tips-card { background:rgba(255,255,255,.06); border:1px solid rgba(255,255,255,.1); border-radius:var(--radius-lg); padding:30px 26px; backdrop-filter:blur(10px); transition:var(--transition); }
.tips-card:hover { background:rgba(255,255,255,.1); transform:translateY(-4px); }
.tips-card i { font-size:26px; color:var(--accent); margin-bottom:16px; display:block; }
.tips-card h3 { color:#fff; font-size:17px; font-weight:700; margin-bottom:10px; }
.tips-card p { color:rgba(255,255,255,.72); font-size:14px; line-height:1.8; }
.tips-check { margin-top:16px; display:flex; flex-direction:column; gap:8px; }
.tips-check li { display:flex; align-items:center; gap:8px; font-size:13px; color:rgba(255,255,255,.85); }
.tips-check li i { font-size:12px; color:var(--accent); margin:0; }

/* ===== FAQ ===== */
.faq-section { padding:85px 0 80px; }
.faq-wrap { max-width:860px; margin:0 auto; display:flex; flex-direction:column; gap:14px; }
.faq-item { background:#fff; border:1px solid var(--border-color); border-radius:var(--radius-md); overflow:hidden; transition:var(--transition); }
.faq-item:hover { border-color:rgba(240,178,58,.4); }
.faq-question { width:100%; display:flex; align-items:center; justify-content:space-between; gap:16px; padding:20px 24px; background:none; border:none; text-align:left; font-size:16px; font-weight:600; color:var(--text-main); cursor:pointer; }
.faq-question i { font-size:14px; color:var(--accent-dark); transition:transform .3s ease; flex-shrink:0; }
.faq-item.active .faq-question i { transform:rotate(180deg); }
.faq-answer { max-height:0; overflow:hidden; transition:max-height .4s ease; }
.faq-answer-inner { padding:0 24px 20px; font-size:14px; color:var(--text-muted); line-height:1.85; background:#fff; }

/* ===== CTA Section ===== */
.cta-section { padding:20px 0 90px; }
.cta-box { background:linear-gradient(135deg,var(--accent),#f7c55e); border-radius:24px; padding:64px 48px; text-align:center; position:relative; overflow:hidden; box-shadow:0 16px 40px rgba(240,178,58,.3); }
.cta-box::before { content:'\f135'; font-family:'Font Awesome 6 Free'; font-weight:900; position:absolute; right:-20px; bottom:-30px; font-size:180px; color:rgba(255,255,255,.15); }
.cta-box h2 { font-size:30px; font-weight:800; color:var(--primary); margin-bottom:12px; }
.cta-box p { font-size:16px; color:rgba(22,35,61,.75); max-width:520px; margin:0 auto 32px; }
.cta-btn { display:inline-flex; align-items:center; gap:8px; background:var(--primary); color:#fff; padding:15px 38px; border-radius:30px; font-size:16px; font-weight:600; box-shadow:0 8px 24px rgba(22,35,61,.3); }
.cta-btn:hover { background:var(--primary-light); transform:translateY(-2px); box-shadow:0 12px 30px rgba(22,35,61,.4); }

/* ===== Footer ===== */
.site-footer { background:#0f1a2e; color:rgba(255,255,255,.65); padding:70px 0 0; }
.footer-top { display:grid; grid-template-columns:1.4fr 1fr 1fr; gap:48px; padding-bottom:44px; border-bottom:1px solid rgba(255,255,255,.08); }
.footer-brand .logo .logo-text { color:#fff; }
.footer-brand p { font-size:14px; line-height:1.85; margin-top:18px; max-width:360px; color:rgba(255,255,255,.55); }
.footer-links h4 { color:#fff; font-size:16px; font-weight:600; margin-bottom:20px; }
.footer-links ul li { margin-bottom:12px; }
.footer-links ul a { color:rgba(255,255,255,.6); font-size:14px; }
.footer-links ul a:hover { color:var(--accent); padding-left:6px; }
.footer-bottom { display:flex; align-items:center; justify-content:space-between; padding:22px 0; font-size:13px; color:rgba(255,255,255,.35); flex-wrap:wrap; gap:10px; }
.footer-bottom a { color:rgba(255,255,255,.55); }
.footer-bottom a:hover { color:var(--accent); }

/* ===== Responsive ===== */
@media (max-width:1024px) {
  .topic-grid { grid-template-columns:repeat(2,1fr); }
  .steps-wrap { grid-template-columns:repeat(2,1fr); }
  .intro-grid { gap:40px; }
  .footer-top { grid-template-columns:1fr 1fr; }
}
@media (max-width:768px) {
  .header-inner { height:auto; min-height:64px; flex-wrap:wrap; padding:14px 0; gap:12px; position:relative; }
  .nav-search { order:3; flex-basis:100%; max-width:100%; }
  .nav-search input { height:42px; }
  .main-nav { display:none; order:4; flex-basis:100%; flex-direction:column; align-items:stretch; gap:4px; background:var(--primary); padding:12px; border-radius:var(--radius-md); margin-top:4px; }
  .main-nav.open { display:flex; }
  .main-nav a { display:block; padding:12px 16px; border-radius:8px; text-align:left; }
  .nav-toggle { display:flex; margin-left:auto; }
  .page-banner { padding:64px 0 60px; }
  .page-banner h1 { font-size:32px; }
  .intro-grid { grid-template-columns:1fr; }
  .article-item { flex-direction:column; align-items:flex-start; }
  .article-thumb { width:100%; height:200px; }
  .tips-grid { grid-template-columns:1fr; }
  .cta-box { padding:48px 30px; }
  .cta-box h2 { font-size:26px; }
}
@media (max-width:520px) {
  .container { padding:0 18px; }
  .topic-grid { grid-template-columns:1fr; }
  .steps-wrap { grid-template-columns:1fr; }
  .intro-stats { grid-template-columns:1fr 1fr; }
  .intro-stats .stat-item:last-child { grid-column:1/-1; }
  .footer-top { grid-template-columns:1fr; gap:30px; }
  .footer-bottom { flex-direction:column; text-align:center; }
  .page-banner h1 { font-size:26px; }
  .section-title { font-size:24px; }
  .float-card { left:0 !important; bottom:-16px !important; }
}

/* roulang page: category3 */
:root {
  --primary: #4f46e5;
  --primary-dark: #4338ca;
  --primary-light: #818cf8;
  --accent: #f59e0b;
  --accent-dark: #d97706;
  --accent-light: #fbbf24;
  --dark: #0f172a;
  --dark-2: #1e293b;
  --bg: #f8fafc;
  --white: #ffffff;
  --text: #0f172a;
  --text-body: #334155;
  --text-weak: #64748b;
  --border: #e2e8f0;
  --radius: 16px;
  --radius-sm: 10px;
  --shadow: 0 4px 24px rgba(15, 23, 42, 0.07);
  --shadow-hover: 0 16px 40px rgba(79, 70, 229, 0.12);
  --container: 1200px;
  --transition: all 0.3s ease;
}
*,
*::before,
*::after {
  box-sizing: border-box;
  margin: 0;
  padding: 0;
}
html {
  scroll-behavior: smooth;
  -webkit-text-size-adjust: 100%;
}
body {
  font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", "PingFang SC", "Hiragino Sans GB", "Microsoft YaHei", sans-serif;
  font-size: 16px;
  line-height: 1.7;
  color: var(--text-body);
  background: var(--bg);
  -webkit-font-smoothing: antialiased;
}
a {
  color: inherit;
  text-decoration: none;
  transition: var(--transition);
}
img {
  max-width: 100%;
  height: auto;
  display: block;
}
ul, ol {
  list-style: none;
}
button, input, select, textarea {
  font: inherit;
  outline: none;
}
input[type="text"]:focus, textarea:focus, button:focus {
  outline: 2px solid var(--primary-light);
  outline-offset: 2px;
}
.container {
  max-width: var(--container);
  margin: 0 auto;
  padding: 0 24px;
}
/* ===== Header ===== */
.site-header {
  position: sticky;
  top: 0;
  z-index: 100;
  background: rgba(255, 255, 255, 0.92);
  backdrop-filter: blur(14px);
  -webkit-backdrop-filter: blur(14px);
  border-bottom: 1px solid var(--border);
  box-shadow: 0 2px 12px rgba(15, 23, 42, 0.04);
}
.header-inner {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 20px;
  height: 70px;
}
.logo {
  display: flex;
  align-items: center;
  gap: 10px;
  flex-shrink: 0;
}
.logo-icon {
  width: 38px;
  height: 38px;
  display: flex;
  align-items: center;
  justify-content: center;
  background: linear-gradient(135deg, var(--primary) 0%, var(--primary-light) 100%);
  color: #fff;
  border-radius: 10px;
  font-size: 17px;
  box-shadow: 0 4px 12px rgba(79, 70, 229, 0.3);
}
.logo-text {
  font-size: 21px;
  font-weight: 800;
  color: var(--text);
  letter-spacing: -0.02em;
}
.logo-text span {
  color: var(--primary);
}
.nav-search {
  flex: 1;
  max-width: 420px;
  display: flex;
  align-items: center;
  background: #f1f5f9;
  border: 1px solid var(--border);
  border-radius: 40px;
  padding: 0 18px;
  height: 42px;
  transition: var(--transition);
}
.nav-search:hover {
  border-color: var(--primary-light);
  background: #f8fafc;
}
.nav-search i {
  color: var(--text-weak);
  font-size: 14px;
  margin-right: 10px;
}
.nav-search input {
  border: none;
  background: transparent;
  color: var(--text);
  width: 100%;
  font-size: 14px;
}
.nav-search input::-webkit-input-placeholder {
  color: #94a3b8;
}
.nav-search input::-moz-placeholder {
  color: #94a3b8;
}
.main-nav {
  display: flex;
  align-items: center;
  gap: 4px;
}
.main-nav a {
  display: inline-flex;
  align-items: center;
  gap: 6px;
  padding: 8px 16px;
  border-radius: 30px;
  font-size: 14px;
  font-weight: 600;
  color: var(--text-body);
  transition: var(--transition);
  white-space: nowrap;
}
.main-nav a:hover {
  color: var(--primary);
  background: #f1f5f9;
}
.main-nav a.active {
  color: #fff;
  background: var(--primary);
  box-shadow: 0 4px 14px rgba(79, 70, 229, 0.3);
}
.nav-toggle {
  display: none;
  background: none;
  border: none;
  font-size: 20px;
  color: var(--text);
  width: 40px;
  height: 40px;
  border-radius: 8px;
  cursor: pointer;
  transition: var(--transition);
}
.nav-toggle:hover {
  background: #f1f5f9;
}
/* ===== Hero ===== */
.hero {
  position: relative;
  background-image: url('/assets/images/backpic/back-1.png');
  background-size: cover;
  background-position: center;
  padding: 110px 0 100px;
  overflow: hidden;
}
.hero::before {
  content: '';
  position: absolute;
  inset: 0;
  background: linear-gradient(100deg, rgba(15, 23, 42, 0.88) 30%, rgba(79, 70, 229, 0.45) 70%, rgba(15, 23, 42, 0.5) 100%);
}
.hero-inner {
  position: relative;
  z-index: 2;
  max-width: 720px;
}
.hero-badge {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  background: rgba(255, 255, 255, 0.14);
  border: 1px solid rgba(255, 255, 255, 0.25);
  color: #fff;
  font-size: 13px;
  font-weight: 600;
  padding: 7px 18px;
  border-radius: 40px;
  backdrop-filter: blur(4px);
  letter-spacing: 0.02em;
}
.hero-badge i {
  color: var(--accent-light);
}
.hero h1 {
  font-size: 50px;
  font-weight: 800;
  color: #fff;
  line-height: 1.2;
  margin: 24px 0 18px;
  letter-spacing: -0.02em;
}
.hero h1 em {
  font-style: normal;
  color: var(--accent-light);
}
.hero p {
  font-size: 17px;
  color: rgba(255, 255, 255, 0.85);
  line-height: 1.8;
  margin-bottom: 32px;
  max-width: 560px;
}
.hero-actions {
  display: flex;
  flex-wrap: wrap;
  gap: 16px;
  margin-bottom: 34px;
}
.btn {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  padding: 13px 30px;
  border-radius: 50px;
  font-size: 15px;
  font-weight: 700;
  border: none;
  cursor: pointer;
  transition: var(--transition);
}
.btn-primary {
  background: linear-gradient(135deg, var(--accent) 0%, var(--accent-light) 100%);
  color: #1e293b;
  box-shadow: 0 6px 20px rgba(245, 158, 11, 0.35);
}
.btn-primary:hover {
  transform: translateY(-2px);
  box-shadow: 0 10px 28px rgba(245, 158, 11, 0.45);
}
.btn-outline {
  background: transparent;
  border: 1px solid rgba(255, 255, 255, 0.4);
  color: #fff;
}
.btn-outline:hover {
  background: rgba(255, 255, 255, 0.12);
  border-color: rgba(255, 255, 255, 0.7);
}
.hero-tags {
  display: flex;
  flex-wrap: wrap;
  gap: 10px;
}
.hero-tags span {
  display: inline-flex;
  align-items: center;
  gap: 6px;
  font-size: 13px;
  color: rgba(255, 255, 255, 0.9);
  background: rgba(255, 255, 255, 0.1);
  border: 1px solid rgba(255, 255, 255, 0.15);
  padding: 5px 14px;
  border-radius: 30px;
}
.hero-tags i {
  color: var(--accent-light);
  font-size: 11px;
}
/* ===== Section Shared ===== */
.section {
  padding: 90px 0;
}
.section-head {
  text-align: center;
  max-width: 640px;
  margin: 0 auto 50px;
}
.section-label {
  display: inline-block;
  font-size: 13px;
  font-weight: 700;
  color: var(--primary);
  background: rgba(79, 70, 229, 0.08);
  padding: 5px 16px;
  border-radius: 30px;
  letter-spacing: 0.06em;
  text-transform: uppercase;
  margin-bottom: 14px;
}
.section-title {
  font-size: 34px;
  font-weight: 800;
  color: var(--text);
  line-height: 1.25;
  letter-spacing: -0.02em;
  margin-bottom: 12px;
}
.section-subtitle {
  font-size: 16px;
  color: var(--text-weak);
  line-height: 1.7;
}
/* ===== Category Filter ===== */
.category-bar {
  background: var(--white);
  border-bottom: 1px solid var(--border);
  padding: 30px 0;
}
.filter-row {
  display: flex;
  justify-content: center;
  flex-wrap: wrap;
  gap: 14px;
}
.filter-item {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  padding: 10px 22px;
  border-radius: 40px;
  border: 1px solid var(--border);
  background: #f8fafc;
  font-size: 14px;
  font-weight: 600;
  color: var(--text-body);
  cursor: pointer;
  transition: var(--transition);
}
.filter-item i {
  color: var(--primary);
  font-size: 13px;
}
.filter-item:hover {
  border-color: var(--primary-light);
  background: #eef2ff;
  color: var(--primary);
}
.filter-item.active {
  background: var(--primary);
  color: #fff;
  border-color: var(--primary);
  box-shadow: 0 6px 18px rgba(79, 70, 229, 0.28);
}
.filter-item.active i {
  color: #fff;
}
/* ===== Activity Cards ===== */
.activity-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 28px;
}
.activity-card {
  background: var(--white);
  border-radius: var(--radius);
  overflow: hidden;
  border: 1px solid var(--border);
  box-shadow: var(--shadow);
  transition: var(--transition);
  display: flex;
  flex-direction: column;
}
.activity-card:hover {
  transform: translateY(-6px);
  box-shadow: var(--shadow-hover);
  border-color: var(--primary-light);
}
.activity-cover {
  position: relative;
  height: 190px;
  overflow: hidden;
}
.activity-cover img {
  width: 100%;
  height: 100%;
  object-fit: cover;
  transition: transform 0.5s ease;
}
.activity-card:hover .activity-cover img {
  transform: scale(1.05);
}
.activity-cover::after {
  content: '';
  position: absolute;
  inset: 0;
  background: linear-gradient(180deg, rgba(15, 23, 42, 0.05) 0%, rgba(15, 23, 42, 0.15) 100%);
}
.activity-tag {
  position: absolute;
  top: 14px;
  left: 14px;
  z-index: 2;
  background: rgba(255, 255, 255, 0.92);
  color: var(--primary);
  font-size: 12px;
  font-weight: 700;
  padding: 4px 12px;
  border-radius: 30px;
  backdrop-filter: blur(4px);
  display: inline-flex;
  align-items: center;
  gap: 5px;
  box-shadow: 0 2px 8px rgba(0, 0, 0, 0.1);
}
.activity-tag.hot {
  background: rgba(245, 158, 11, 0.95);
  color: #fff;
}
.activity-info {
  padding: 22px 24px 24px;
  display: flex;
  flex-direction: column;
  flex: 1;
}
.activity-info h3 {
  font-size: 18px;
  font-weight: 700;
  color: var(--text);
  margin-bottom: 8px;
  line-height: 1.4;
}
.activity-info p {
  font-size: 14px;
  color: var(--text-weak);
  line-height: 1.7;
  margin-bottom: 18px;
  flex: 1;
}
.activity-meta {
  display: flex;
  justify-content: space-between;
  align-items: center;
  padding-top: 14px;
  border-top: 1px solid #f1f5f9;
}
.activity-meta span {
  font-size: 13px;
  color: var(--text-weak);
  display: inline-flex;
  align-items: center;
  gap: 6px;
}
.activity-meta i {
  color: var(--accent);
}
.activity-btn {
  display: inline-flex;
  align-items: center;
  gap: 6px;
  background: #eef2ff;
  color: var(--primary);
  font-size: 13px;
  font-weight: 700;
  padding: 7px 16px;
  border-radius: 30px;
  transition: var(--transition);
}
.activity-btn:hover {
  background: var(--primary);
  color: #fff;
}
/* ===== Process ===== */
.process {
  background: var(--dark);
  background-image: linear-gradient(120deg, #0f172a, #1e293b);
  color: #fff;
}
.process .section-label {
  background: rgba(255, 255, 255, 0.1);
  color: var(--accent-light);
}
.process .section-title {
  color: #fff;
}
.process .section-subtitle {
  color: rgba(255, 255, 255, 0.7);
}
.process-steps {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 28px;
  margin-top: 10px;
}
.process-step {
  background: rgba(255, 255, 255, 0.06);
  border: 1px solid rgba(255, 255, 255, 0.12);
  border-radius: var(--radius);
  padding: 36px 28px;
  text-align: center;
  position: relative;
  transition: var(--transition);
}
.process-step:hover {
  background: rgba(255, 255, 255, 0.1);
  border-color: rgba(255, 255, 255, 0.25);
  transform: translateY(-4px);
}
.step-num {
  position: absolute;
  top: 18px;
  right: 20px;
  font-size: 42px;
  font-weight: 800;
  color: rgba(255, 255, 255, 0.08);
  line-height: 1;
}
.step-icon {
  width: 56px;
  height: 56px;
  margin: 0 auto 18px;
  border-radius: 16px;
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 22px;
  background: linear-gradient(135deg, var(--accent), var(--accent-light));
  color: #1e293b;
  box-shadow: 0 8px 22px rgba(245, 158, 11, 0.35);
}
.process-step h3 {
  font-size: 17px;
  font-weight: 700;
  margin-bottom: 10px;
  color: #fff;
}
.process-step p {
  font-size: 14px;
  color: rgba(255, 255, 255, 0.7);
  line-height: 1.6;
}
/* ===== Ranking ===== */
.ranking-wrap {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 40px;
  align-items: start;
}
.rank-list {
  background: var(--white);
  border-radius: var(--radius);
  border: 1px solid var(--border);
  box-shadow: var(--shadow);
  overflow: hidden;
}
.rank-item {
  display: flex;
  align-items: center;
  gap: 16px;
  padding: 18px 24px;
  border-bottom: 1px solid #f1f5f9;
  transition: var(--transition);
}
.rank-item:last-child {
  border-bottom: none;
}
.rank-item:hover {
  background: #f8fafc;
}
.rank-badge {
  width: 32px;
  height: 32px;
  flex-shrink: 0;
  border-radius: 10px;
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 14px;
  font-weight: 800;
  background: #f1f5f9;
  color: var(--text-weak);
}
.rank-item:nth-child(1) .rank-badge {
  background: linear-gradient(135deg, #ffd700, #f59e0b);
  color: #1e293b;
  box-shadow: 0 4px 10px rgba(245, 158, 11, 0.3);
}
.rank-item:nth-child(2) .rank-badge {
  background: linear-gradient(135deg, #cbd5e1, #94a3b8);
  color: #fff;
}
.rank-item:nth-child(3) .rank-badge {
  background: linear-gradient(135deg, #f97316, #c2410c);
  color: #fff;
}
.rank-info {
  flex: 1;
  min-width: 0;
}
.rank-info h4 {
  font-size: 15px;
  font-weight: 700;
  color: var(--text);
  margin-bottom: 3px;
  white-space: nowrap;
  overflow: hidden;
  text-overflow: ellipsis;
}
.rank-info p {
  font-size: 13px;
  color: var(--text-weak);
}
.rank-hot {
  display: inline-flex;
  align-items: center;
  gap: 6px;
  font-size: 13px;
  font-weight: 700;
  color: var(--accent-dark);
  background: rgba(245, 158, 11, 0.1);
  padding: 4px 12px;
  border-radius: 20px;
  white-space: nowrap;
}
.ranking-side {
  background: linear-gradient(150deg, var(--primary), var(--primary-dark));
  border-radius: var(--radius);
  padding: 36px;
  color: #fff;
  position: relative;
  overflow: hidden;
}
.ranking-side::after {
  content: '';
  position: absolute;
  right: -40px;
  top: -40px;
  width: 160px;
  height: 160px;
  background: rgba(255, 255, 255, 0.08);
  border-radius: 50%;
}
.ranking-side h3 {
  font-size: 22px;
  font-weight: 800;
  margin-bottom: 12px;
  line-height: 1.4;
}
.ranking-side p {
  font-size: 14px;
  color: rgba(255, 255, 255, 0.85);
  margin-bottom: 24px;
  line-height: 1.7;
}
.ranking-side ul {
  margin-bottom: 28px;
}
.ranking-side ul li {
  display: flex;
  align-items: center;
  gap: 10px;
  font-size: 14px;
  padding: 8px 0;
  border-bottom: 1px solid rgba(255, 255, 255, 0.15);
}
.ranking-side ul li:last-child {
  border-bottom: none;
}
.ranking-side ul li i {
  color: var(--accent-light);
  font-size: 13px;
  width: 16px;
}
/* ===== FAQ ===== */
.faq-list {
  max-width: 760px;
  margin: 0 auto;
}
.faq-item {
  background: var(--white);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  padding: 22px 28px;
  margin-bottom: 16px;
  transition: var(--transition);
  cursor: pointer;
}
.faq-item:hover {
  border-color: var(--primary-light);
  box-shadow: var(--shadow);
}
.faq-question {
  display: flex;
  justify-content: space-between;
  align-items: center;
  font-size: 16px;
  font-weight: 700;
  color: var(--text);
}
.faq-question i {
  color: var(--primary);
  font-size: 14px;
  transition: transform 0.3s ease;
  flex-shrink: 0;
  width: 28px;
  height: 28px;
  display: flex;
  align-items: center;
  justify-content: center;
  background: #eef2ff;
  border-radius: 50%;
}
.faq-item.active .faq-question i {
  transform: rotate(180deg);
}
.faq-answer {
  display: none;
  padding-top: 14px;
  font-size: 14px;
  color: var(--text-weak);
  line-height: 1.75;
}
.faq-item.active .faq-answer {
  display: block;
}
.faq-answer a {
  color: var(--primary);
  font-weight: 600;
}
/* ===== CTA ===== */
.cta {
  background-image: url('/assets/images/backpic/back-3.png');
  background-size: cover;
  background-position: center;
  background-attachment: fixed;
  position: relative;
  padding: 90px 0;
}
.cta::before {
  content: '';
  position: absolute;
  inset: 0;
  background: rgba(15, 23, 42, 0.78);
}
.cta-inner {
  position: relative;
  z-index: 2;
  text-align: center;
  color: #fff;
  max-width: 600px;
  margin: 0 auto;
}
.cta-inner h2 {
  font-size: 34px;
  font-weight: 800;
  line-height: 1.3;
  margin-bottom: 16px;
}
.cta-inner p {
  font-size: 16px;
  opacity: 0.85;
  margin-bottom: 32px;
  line-height: 1.7;
}
.cta-inner .btn {
  font-size: 16px;
  padding: 15px 38px;
}
/* ===== Footer ===== */
.site-footer {
  background: var(--dark);
  color: rgba(255, 255, 255, 0.7);
  padding: 70px 0 0;
}
.footer-top {
  display: grid;
  grid-template-columns: 1.4fr 1fr 1fr;
  gap: 40px;
  padding-bottom: 50px;
  border-bottom: 1px solid rgba(255, 255, 255, 0.1);
}
.footer-brand .logo {
  margin-bottom: 16px;
}
.footer-brand .logo-text {
  color: #fff;
}
.footer-brand .logo-text span {
  color: var(--accent-light);
}
.footer-brand p {
  font-size: 14px;
  line-height: 1.7;
  max-width: 320px;
  margin-top: 10px;
  color: rgba(255, 255, 255, 0.6);
}
.footer-links h4 {
  color: #fff;
  font-size: 15px;
  font-weight: 700;
  margin-bottom: 16px;
}
.footer-links ul li {
  margin-bottom: 10px;
}
.footer-links ul a {
  font-size: 14px;
  color: rgba(255, 255, 255, 0.6);
  transition: var(--transition);
}
.footer-links ul a:hover {
  color: var(--accent-light);
  padding-left: 4px;
}
.footer-bottom {
  display: flex;
  justify-content: space-between;
  align-items: center;
  padding: 24px 0;
  font-size: 13px;
  color: rgba(255, 255, 255, 0.5);
  flex-wrap: wrap;
  gap: 10px;
}
.footer-bottom a {
  color: var(--accent-light);
}
/* ===== Responsive ===== */
@media (max-width: 1024px) {
  .hero {
    padding: 90px 0 80px;
  }
  .hero h1 {
    font-size: 40px;
  }
  .activity-grid {
    grid-template-columns: repeat(2, 1fr);
    gap: 20px;
  }
  .process-steps {
    grid-template-columns: repeat(2, 1fr);
    gap: 20px;
  }
  .ranking-wrap {
    grid-template-columns: 1fr;
    gap: 28px;
  }
  .footer-top {
    grid-template-columns: 1fr 1fr;
  }
}
@media (max-width: 768px) {
  .header-inner {
    height: auto;
    padding: 14px 0;
    flex-wrap: wrap;
  }
  .nav-search {
    order: 3;
    max-width: 100%;
    width: 100%;
    flex-basis: 100%;
  }
  .main-nav {
    display: none;
    position: absolute;
    top: 100%;
    left: 0;
    right: 0;
    background: #fff;
    flex-direction: column;
    padding: 16px 24px;
    gap: 6px;
    border-bottom: 1px solid var(--border);
    box-shadow: 0 12px 30px rgba(15, 23, 42, 0.1);
    border-radius: 0 0 var(--radius) var(--radius);
  }
  .main-nav.open {
    display: flex;
  }
  .main-nav a {
    width: 100%;
    justify-content: center;
    padding: 12px;
    font-size: 15px;
  }
  .nav-toggle {
    display: inline-flex;
    align-items: center;
    justify-content: center;
  }
  .hero {
    padding: 70px 0 60px;
  }
  .hero h1 {
    font-size: 32px;
  }
  .hero p {
    font-size: 15px;
  }
  .section {
    padding: 70px 0;
  }
  .section-title {
    font-size: 27px;
  }
  .activity-grid {
    grid-template-columns: 1fr;
  }
  .process-steps {
    grid-template-columns: 1fr 1fr;
    gap: 16px;
  }
  .process-step {
    padding: 24px 18px;
  }
  .process-step h3 {
    font-size: 15px;
  }
  .footer-top {
    grid-template-columns: 1fr;
    gap: 30px;
  }
  .cta-inner h2 {
    font-size: 26px;
  }
}
@media (max-width: 520px) {
  .container {
    padding: 0 18px;
  }
  .hero h1 {
    font-size: 28px;
  }
  .hero-actions {
    flex-direction: column;
    gap: 12px;
  }
  .btn {
    width: 100%;
    justify-content: center;
  }
  .process-steps {
    grid-template-columns: 1fr;
  }
  .filter-row {
    gap: 8px;
  }
  .filter-item {
    padding: 8px 14px;
    font-size: 13px;
  }
  .footer-bottom {
    flex-direction: column;
    text-align: center;
  }
}