/* roulang page: index */
:root {
  --bg-page: #F6F9FC;
  --bg-white: #FFFFFF;
  --primary: #2B6FAE;
  --primary-light: #D8E7F4;
  --primary-lighter: #E6F0FA;
  --nav-bg: #0C1420;
  --neon: #00C9A7;
  --neon-glow: rgba(0, 201, 167, 0.4);
  --cta-bg: #F2A93B;
  --cta-hover: #F5B85C;
  --cta-active: #E0982A;
  --text-main: #1F2A37;
  --text-secondary: #5B6B7C;
  --text-muted: #9AA8B5;
  --border: #E2EAF2;
  --shadow-card: 0 4px 24px rgba(18, 52, 86, 0.08);
  --shadow-hover: 0 8px 32px rgba(18, 52, 86, 0.12);
  --shadow-cta-panel: 0 8px 32px rgba(18, 52, 86, 0.06);
  --radius-card: 12px;
  --radius-btn: 8px;
  --radius-small: 4px;
  --font-main: "PingFang SC", "Microsoft YaHei", "Noto Sans CJK SC", "Segoe UI", Helvetica, Arial, sans-serif;
  --container: 1200px;
  --space-section: 72px;
  --space-section-sm: 40px;
  --transition-base: all 0.2s ease;
}
*, *::before, *::after { box-sizing: border-box; margin: 0; padding: 0; }
html { scroll-behavior: smooth; }
body {
  font-family: var(--font-main);
  background: var(--bg-page);
  color: var(--text-main);
  line-height: 1.75;
  font-size: 16px;
  -webkit-font-smoothing: antialiased;
}
img { max-width: 100%; display: block; }
a { color: var(--primary); text-decoration: none; transition: var(--transition-base); }
a:hover { color: var(--primary); opacity: 0.85; }
ul, ol { list-style: none; }
button { font-family: inherit; cursor: pointer; border: none; background: none; }
input { font-family: inherit; }
.container { max-width: var(--container); margin: 0 auto; padding: 0 24px; }
section { padding: var(--space-section) 0; }
.section-header { text-align: center; margin-bottom: 40px; }
.section-header h2 { font-size: 28px; color: var(--text-main); line-height: 1.4; margin-bottom: 8px; }
.section-header p { color: var(--text-secondary); font-size: 15px; }

/* ========== HEADER / NAV ========== */
.site-header {
  position: fixed;
  top: 0; left: 0; right: 0;
  height: 64px;
  background: var(--nav-bg);
  z-index: 1000;
  border-bottom: 1px solid rgba(255,255,255,0.06);
}
.header-inner {
  max-width: var(--container);
  margin: 0 auto;
  height: 64px;
  padding: 0 24px;
  display: flex;
  align-items: center;
  justify-content: space-between;
}
.logo { display: flex; align-items: center; gap: 10px; }
.logo-icon { width: 32px; height: 32px; flex-shrink: 0; }
.logo-text {
  color: #fff;
  font-size: 18px;
  font-weight: 700;
  letter-spacing: 1px;
  white-space: nowrap;
}
.nav-menu { display: flex; align-items: center; gap: 4px; }
.nav-link {
  display: inline-block;
  position: relative;
  padding: 20px 16px;
  color: #C9D4E0;
  font-size: 15px;
  font-weight: 400;
  line-height: 24px;
  transition: var(--transition-base);
}
.nav-link:hover { color: #fff; opacity: 1; }
.nav-link.active { color: #fff; font-weight: 500; }
.nav-link.active::after {
  content: '';
  position: absolute;
  bottom: 8px; left: 12px; right: 12px;
  height: 4px;
  background: var(--neon);
  border-radius: 2px;
  box-shadow: 0 0 8px var(--neon-glow);
}
.nav-cta {
  display: inline-block;
  background: var(--cta-bg);
  color: #fff;
  font-size: 15px;
  font-weight: 600;
  padding: 8px 20px;
  border-radius: var(--radius-btn);
  box-shadow: 0 2px 8px rgba(242, 169, 59, 0.3);
  transition: var(--transition-base);
  white-space: nowrap;
}
.nav-cta:hover { background: var(--cta-hover); color: #fff; opacity: 1; }
.nav-cta:active { background: var(--cta-active); transform: translateY(1px); }
.nav-toggle { display: none; width: 40px; height: 40px; position: relative; border-radius: 8px; }
.nav-toggle span { display: block; width: 20px; height: 2px; background: #C9D4E0; margin: 4px auto; transition: var(--transition-base); }
.nav-toggle:hover span { background: #fff; }

/* ========== HERO ========== */
.hero {
  padding: 140px 0 72px;
  background: linear-gradient(135deg, #EAF2FA 0%, #F6F9FC 100%);
  position: relative;
  overflow: hidden;
}
.hero-inner {
  display: grid;
  grid-template-columns: 1.1fr 0.9fr;
  gap: 48px;
  align-items: center;
}
.hero-content { max-width: 580px; }
.hero-badge {
  display: inline-block;
  background: var(--primary-lighter);
  color: var(--primary);
  font-size: 13px;
  font-weight: 500;
  padding: 4px 14px;
  border-radius: 20px;
  margin-bottom: 18px;
}
.hero h1 {
  font-size: 38px;
  font-weight: 700;
  line-height: 1.3;
  color: var(--text-main);
  margin-bottom: 16px;
}
.hero-sub {
  font-size: 17px;
  color: var(--text-secondary);
  line-height: 1.7;
  margin-bottom: 28px;
}
.hero-actions { display: flex; gap: 12px; flex-wrap: wrap; }
.btn-primary {
  display: inline-flex;
  align-items: center;
  gap: 6px;
  background: var(--cta-bg);
  color: #fff;
  font-size: 15px;
  font-weight: 600;
  padding: 12px 28px;
  border-radius: var(--radius-btn);
  box-shadow: 0 4px 16px rgba(242, 169, 59, 0.25);
  transition: var(--transition-base);
}
.btn-primary:hover { background: var(--cta-hover); color: #fff; opacity: 1; transform: translateY(-1px); }
.btn-primary:active { transform: translateY(1px); background: var(--cta-active); }
.btn-secondary {
  display: inline-flex;
  align-items: center;
  gap: 6px;
  background: #fff;
  color: var(--primary);
  font-size: 15px;
  font-weight: 500;
  padding: 12px 26px;
  border-radius: var(--radius-btn);
  border: 1px solid var(--primary);
  transition: var(--transition-base);
}
.btn-secondary:hover { background: var(--primary-lighter); color: var(--primary); opacity: 1; }
.btn-secondary:active { transform: translateY(1px); }
.hero-visual { position: relative; }
.hero-img {
  width: 100%;
  height: auto;
  border-radius: 16px;
  box-shadow: var(--shadow-card);
}
.hero-stats {
  display: flex;
  gap: 24px;
  margin-top: 32px;
  flex-wrap: wrap;
}
.stat-item { background: #fff; border-radius: var(--radius-card); padding: 16px 20px; box-shadow: var(--shadow-card); flex: 1; min-width: 120px; text-align: center; }
.stat-number { font-size: 24px; font-weight: 700; color: var(--primary); }
.stat-label { font-size: 12px; color: var(--text-secondary); margin-top: 4px; }

/* ========== SECTION / CATALOG ========== */
.catalog { background: var(--bg-page); padding-top: var(--space-section); }
.catalog-grid {
  display: grid;
  grid-template-columns: 7fr 5fr;
  gap: 24px;
  align-items: stretch;
}
.catalog-card {
  background: var(--bg-white);
  border-radius: var(--radius-card);
  box-shadow: var(--shadow-card);
  padding: 28px;
  display: flex;
  flex-direction: column;
  justify-content: space-between;
  transition: var(--transition-base);
  position: relative;
  overflow: hidden;
}
.catalog-card:hover { box-shadow: var(--shadow-hover); transform: translateY(-2px); }
.catalog-card-large { min-height: 320px; }
.catalog-card-small { min-height: 148px; justify-content: flex-start; gap: 8px; }
.catalog-number {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  width: 40px; height: 40px;
  background: var(--primary-lighter);
  color: var(--primary);
  font-size: 16px;
  font-weight: 700;
  border-radius: 50%;
  margin-bottom: 16px;
}
.catalog-card-large .catalog-number { font-size: 20px; width: 48px; height: 48px; }
.catalog-title { font-size: 18px; font-weight: 600; color: var(--text-main); margin-bottom: 8px; line-height: 1.5; }
.catalog-desc { font-size: 14px; color: var(--text-secondary); line-height: 1.7; }
.catalog-link { display: inline-flex; align-items: center; gap: 4px; font-size: 14px; font-weight: 500; color: var(--primary); margin-top: 16px; }
.catalog-link:hover { gap: 8px; color: var(--primary); opacity: 0.85; }
.catalog-card-small .catalog-link { margin-top: 4px; }
.catalog-right { display: grid; grid-template-rows: 1fr 1fr; gap: 24px; }

/* ========== NEWS / CMS LIST ========== */
.news-section { background: var(--bg-white); }
.news-list { display: flex; flex-direction: column; gap: 16px; }
.news-card {
  display: flex;
  gap: 20px;
  background: var(--bg-white);
  border: 1px solid var(--border);
  border-radius: var(--radius-card);
  padding: 16px;
  transition: var(--transition-base);
  align-items: center;
}
.news-card:hover { box-shadow: var(--shadow-hover); transform: translateY(-2px); border-color: transparent; }
.news-cover { width: 180px; height: 108px; flex-shrink: 0; border-radius: 8px; overflow: hidden; background: var(--primary-lighter); }
.news-cover img { width: 100%; height: 100%; object-fit: cover; transition: transform 0.3s ease; }
.news-card:hover .news-cover img { transform: scale(1.03); }
.news-info { flex: 1; min-width: 0; }
.news-cat {
  display: inline-block;
  background: var(--primary-lighter);
  color: var(--primary);
  font-size: 12px;
  padding: 2px 10px;
  border-radius: var(--radius-small);
  margin-bottom: 6px;
}
.news-title { font-size: 16px; font-weight: 600; color: var(--text-main); line-height: 1.5; margin-bottom: 4px; white-space: nowrap; overflow: hidden; text-overflow: ellipsis; }
.news-summary { font-size: 14px; color: var(--text-secondary); line-height: 1.6; display: -webkit-box; -webkit-line-clamp: 2; -webkit-box-orient: vertical; overflow: hidden; margin-bottom: 6px; }
.news-time { font-size: 12px; color: var(--text-muted); }
.empty-state {
  text-align: center;
  color: var(--text-secondary);
  font-size: 15px;
  padding: 40px 0;
  background: var(--bg-page);
  border-radius: var(--radius-card);
}

/* ========== FEATURED CARDS ========== */
.featured-section { background: var(--bg-page); }
.featured-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 24px;
}
.featured-card {
  background: var(--bg-white);
  border-radius: var(--radius-card);
  box-shadow: var(--shadow-card);
  overflow: hidden;
  transition: var(--transition-base);
  display: flex;
  flex-direction: column;
}
.featured-card:hover { box-shadow: var(--shadow-hover); transform: translateY(-2px); }
.featured-card-wide { grid-column: span 2; }
.featured-cover { height: 200px; overflow: hidden; position: relative; background: var(--primary-lighter); }
.featured-cover img { width: 100%; height: 100%; object-fit: cover; transition: transform 0.3s ease; }
.featured-card:hover .featured-cover img { transform: scale(1.03); }
.featured-badge {
  position: absolute;
  top: 12px; left: 12px;
  background: var(--cta-bg);
  color: #fff;
  font-size: 12px;
  font-weight: 600;
  padding: 2px 10px;
  border-radius: 20px;
}
.featured-body { padding: 20px 24px 24px; display: flex; flex-direction: column; flex: 1; }
.featured-tags { display: flex; gap: 6px; margin-bottom: 8px; flex-wrap: wrap; }
.tag {
  display: inline-block;
  background: var(--primary-lighter);
  color: var(--primary);
  font-size: 12px;
  padding: 2px 10px;
  border-radius: var(--radius-small);
}
.featured-title { font-size: 18px; font-weight: 600; color: var(--text-main); line-height: 1.5; margin-bottom: 8px; }
.featured-summary { font-size: 14px; color: var(--text-secondary); line-height: 1.7; margin-bottom: 12px; flex: 1; display: -webkit-box; -webkit-line-clamp: 2; -webkit-box-orient: vertical; overflow: hidden; }
.featured-meta { display: flex; justify-content: space-between; align-items: center; font-size: 12px; color: var(--text-muted); }
.featured-link { color: var(--primary); font-size: 14px; font-weight: 500; display: inline-flex; align-items: center; gap: 4px; }

/* ========== RECOMMEND ========== */
.recommend-section { background: var(--bg-white); }
.recommend-list {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 24px;
}
.recommend-item {
  display: flex;
  gap: 14px;
  align-items: center;
  background: var(--bg-page);
  border: 1px solid var(--border);
  border-radius: var(--radius-card);
  padding: 16px;
  transition: var(--transition-base);
}
.recommend-item:hover { box-shadow: var(--shadow-hover); border-color: transparent; transform: translateY(-2px); }
.recommend-img { width: 72px; height: 72px; border-radius: 8px; overflow: hidden; flex-shrink: 0; }
.recommend-img img { width: 100%; height: 100%; object-fit: cover; }
.recommend-info { flex: 1; min-width: 0; }
.recommend-info h3 { font-size: 15px; font-weight: 600; color: var(--text-main); margin-bottom: 2px; line-height: 1.4; white-space: nowrap; overflow: hidden; text-overflow: ellipsis; }
.recommend-info p { font-size: 13px; color: var(--text-secondary); line-height: 1.5; display: -webkit-box; -webkit-line-clamp: 2; -webkit-box-orient: vertical; overflow: hidden; }
.recommend-arrow { color: var(--primary); font-size: 18px; flex-shrink: 0; }

/* ========== FAQ ========== */
.faq-section { background: var(--bg-page); }
.faq-list { max-width: 760px; margin: 0 auto; }
.faq-item {
  background: var(--bg-white);
  border: 1px solid var(--border);
  border-radius: 8px;
  margin-bottom: 12px;
  overflow: hidden;
  transition: var(--transition-base);
}
.faq-item.active { box-shadow: var(--shadow-card); }
.faq-question {
  width: 100%;
  display: flex;
  justify-content: space-between;
  align-items: center;
  padding: 16px 20px;
  font-size: 15px;
  font-weight: 500;
  color: var(--text-main);
  text-align: left;
  transition: var(--transition-base);
  background: var(--bg-white);
}
.faq-item.active .faq-question { background: var(--primary-lighter); color: var(--primary); }
.faq-icon { font-size: 20px; line-height: 1; transition: transform 0.3s ease; color: var(--text-muted); }
.faq-item.active .faq-icon { transform: rotate(45deg); color: var(--primary); }
.faq-answer { max-height: 0; overflow: hidden; transition: max-height 0.3s ease; padding: 0 20px; }
.faq-item.active .faq-answer { max-height: 300px; padding: 4px 20px 16px; }
.faq-answer p { font-size: 14px; color: var(--text-secondary); line-height: 1.75; }

/* ========== CTA / SAVE ========== */
.cta-section { background: var(--bg-white); padding: 80px 0; }
.cta-panel {
  background: var(--bg-white);
  border-radius: 16px;
  box-shadow: var(--shadow-cta-panel);
  border: 1px dashed var(--primary-light);
  padding: 48px 24px;
  text-align: center;
  max-width: 720px;
  margin: 0 auto;
  position: relative;
}
.cta-panel::before {
  content: '';
  position: absolute;
  inset: 12px;
  border-radius: 10px;
  border: 1px solid var(--primary-lighter);
  pointer-events: none;
}
.cta-panel h2 { font-size: 24px; color: var(--text-main); margin-bottom: 8px; }
.cta-panel p { color: var(--text-secondary); font-size: 14px; margin-bottom: 24px; }
.cta-share { display: flex; align-items: center; justify-content: center; gap: 16px; margin-top: 20px; flex-wrap: wrap; }
.share-icon {
  width: 42px; height: 42px;
  border-radius: 50%;
  background: var(--bg-page);
  border: 1px solid var(--border);
  display: inline-flex;
  align-items: center;
  justify-content: center;
  color: var(--text-secondary);
  transition: var(--transition-base);
}
.share-icon:hover { background: var(--primary-lighter); color: var(--primary); border-color: var(--primary-light); }
.cta-save-btn {
  display: inline-flex;
  align-items: center;
  gap: 6px;
  background: #fff;
  color: var(--primary);
  font-size: 15px;
  font-weight: 500;
  padding: 10px 24px;
  border-radius: var(--radius-btn);
  border: 1px solid var(--primary);
  transition: var(--transition-base);
}
.cta-save-btn:hover { background: var(--primary-lighter); color: var(--primary); }
.cta-save-btn:active { transform: translateY(1px); }

/* ========== FOOTER ========== */
.site-footer {
  background: var(--nav-bg);
  color: #9AA8B5;
  padding-top: 48px;
}
.footer-neon-line { height: 1px; background: linear-gradient(90deg, transparent, var(--neon), transparent); opacity: 0.6; margin-bottom: 40px; }
.footer-inner {
  max-width: var(--container);
  margin: 0 auto;
  padding: 0 24px;
  display: grid;
  grid-template-columns: 2fr 1fr 1fr;
  gap: 40px;
  padding-bottom: 40px;
}
.footer-brand h3 { color: #fff; font-size: 18px; margin-bottom: 10px; font-weight: 600; }
.footer-brand p { font-size: 13px; line-height: 1.7; max-width: 320px; }
.footer-col h4 { color: #fff; font-size: 15px; margin-bottom: 14px; font-weight: 500; }
.footer-col ul li { margin-bottom: 8px; }
.footer-col ul li a { color: #9AA8B5; font-size: 14px; transition: var(--transition-base); }
.footer-col ul li a:hover { color: #fff; opacity: 1; }
.footer-bottom {
  border-top: 1px solid rgba(255,255,255,0.06);
  padding: 20px 0;
  text-align: center;
  font-size: 12px;
  color: #7C8B9A;
}
.footer-bottom .container { display: flex; justify-content: center; align-items: center; gap: 8px; flex-wrap: wrap; }

/* ========== FOCUS ========== */
a:focus-visible, button:focus-visible {
  outline: 2px solid var(--primary);
  outline-offset: 2px;
  border-radius: 4px;
}

/* ========== RESPONSIVE ========== */
@media (max-width: 1024px) {
  .hero { padding: 120px 0 56px; }
  .hero-inner { grid-template-columns: 1fr; gap: 32px; }
  .hero-content { max-width: 100%; }
  .catalog-grid { grid-template-columns: 1fr; }
  .catalog-right { grid-template-rows: 1fr; }
  .featured-grid { grid-template-columns: 1fr 1fr; }
  .featured-card-wide { grid-column: span 2; }
  .recommend-list { grid-template-columns: 1fr; }
  .footer-inner { grid-template-columns: 1fr 1fr; }
}
@media (max-width: 768px) {
  body { font-size: 15px; }
  .container { padding: 0 16px; }
  section { padding: 48px 0; }
  .section-header h2 { font-size: 24px; }
  .nav-toggle { display: block; }
  .nav-menu {
    display: none;
    position: absolute;
    top: 64px; left: 0; right: 0;
    background: var(--nav-bg);
    flex-direction: column;
    align-items: stretch;
    padding: 8px 16px 16px;
    border-bottom: 1px solid rgba(255,255,255,0.08);
  }
  .nav-menu.open { display: flex; }
  .nav-link { padding: 12px 8px; }
  .nav-link.active::after { bottom: 4px; left: 8px; right: 8px; }
  .nav-cta { display: none; }
  .hero h1 { font-size: 28px; }
  .hero-sub { font-size: 15px; }
  .featured-grid { grid-template-columns: 1fr; }
  .featured-card-wide { grid-column: span 1; }
  .news-card { flex-direction: column; }
  .news-cover { width: 100%; height: 160px; }
  .footer-inner { grid-template-columns: 1fr; gap: 24px; }
  .catalog-card-large { min-height: 240px; }
}
@media (max-width: 480px) {
  .hero-actions { flex-direction: column; }
  .hero-actions .btn-primary, .hero-actions .btn-secondary { width: 100%; justify-content: center; }
  .recommend-item { flex-direction: row; }
  .cta-panel h2 { font-size: 20px; }
  .footer-bottom .container { flex-direction: column; gap: 4px; }
}

/* roulang page: article */
:root {
        --primary: #2B6FAE;
        --primary-dark: #1F5A8E;
        --primary-light: #D8E7F4;
        --primary-soft: #E6F0FA;
        --bg-base: #F6F9FC;
        --bg-white: #FFFFFF;
        --nav-dark: #0C1420;
        --neon: #00C9A7;
        --neon-glow: rgba(0, 201, 167, 0.4);
        --cta: #F2A93B;
        --cta-hover: #EFA02B;
        --text-main: #1F2A37;
        --text-sub: #5B6B7C;
        --text-muted: #9AA8B5;
        --border: #E2EAF2;
        --shadow-card: 0 4px 24px rgba(18, 52, 86, 0.08);
        --shadow-hover: 0 8px 32px rgba(18, 52, 86, 0.12);
        --radius-card: 12px;
        --radius-btn: 8px;
        --radius-panel: 16px;
        --container-width: 1200px;
        --font-family: "PingFang SC", "Microsoft YaHei", "Noto Sans CJK SC", "Segoe UI", Helvetica, Arial, sans-serif;
        --transition: all 0.2s ease;
    }
    *,
    *::before,
    *::after {
        box-sizing: border-box;
        margin: 0;
        padding: 0;
    }
    html {
        scroll-behavior: smooth;
    }
    body {
        font-family: var(--font-family);
        background: var(--bg-base);
        color: var(--text-main);
        line-height: 1.6;
        -webkit-font-smoothing: antialiased;
        -moz-osx-font-smoothing: grayscale;
    }
    img {
        max-width: 100%;
        display: block;
    }
    a {
        color: var(--primary);
        text-decoration: none;
        transition: var(--transition);
    }
    button {
        font-family: var(--font-family);
        border: none;
        cursor: pointer;
    }
    ul,
    ol {
        list-style-position: inside;
    }
    .container {
        max-width: var(--container-width);
        margin: 0 auto;
        padding-left: 24px;
        padding-right: 24px;
    }
    .container-sm {
        max-width: 720px;
        margin: 0 auto;
        padding-left: 24px;
        padding-right: 24px;
    }

    /* Header */
    .site-header {
        background: var(--nav-dark);
        height: 64px;
        position: sticky;
        top: 0;
        z-index: 100;
        border-bottom: 1px solid rgba(255, 255, 255, 0.06);
        box-shadow: 0 4px 20px rgba(12, 20, 32, 0.3);
    }
    .header-inner {
        max-width: var(--container-width);
        height: 100%;
        margin: 0 auto;
        padding: 0 24px;
        display: flex;
        align-items: center;
        gap: 32px;
    }
    .logo {
        display: flex;
        align-items: center;
        gap: 10px;
        flex-shrink: 0;
    }
    .logo-icon {
        width: 34px;
        height: 34px;
        flex-shrink: 0;
    }
    .logo-text {
        font-size: 18px;
        font-weight: 700;
        color: #ffffff;
        letter-spacing: 0.5px;
        white-space: nowrap;
    }
    .nav-menu {
        display: flex;
        align-items: center;
        gap: 6px;
        margin-right: auto;
    }
    .nav-menu .nav-link {
        color: #C9D4E0;
        font-size: 14px;
        padding: 8px 14px;
        border-radius: 6px;
        position: relative;
        transition: var(--transition);
        white-space: nowrap;
    }
    .nav-menu .nav-link:hover {
        color: #ffffff;
        background: rgba(255, 255, 255, 0.06);
    }
    .nav-menu .nav-link.active {
        color: #ffffff;
        font-weight: 600;
    }
    .nav-menu .nav-link.active::after {
        content: "";
        position: absolute;
        bottom: -2px;
        left: 14px;
        right: 14px;
        height: 4px;
        border-radius: 2px 2px 0 0;
        background: var(--neon);
        box-shadow: 0 0 8px var(--neon-glow), 0 0 20px var(--neon-glow);
    }
    .nav-cta {
        background: var(--cta);
        color: #ffffff;
        font-size: 14px;
        font-weight: 600;
        padding: 9px 22px;
        border-radius: var(--radius-btn);
        transition: var(--transition);
        box-shadow: 0 2px 12px rgba(242, 169, 59, 0.3);
        white-space: nowrap;
        flex-shrink: 0;
    }
    .nav-cta:hover {
        background: var(--cta-hover);
        color: #ffffff;
        box-shadow: 0 4px 18px rgba(242, 169, 59, 0.4);
        transform: translateY(-1px);
    }
    .nav-cta:active {
        transform: translateY(1px);
    }
    .nav-cta:focus-visible {
        outline: 2px solid var(--neon);
        outline-offset: 2px;
    }
    .nav-toggle {
        display: none;
        background: transparent;
        border: none;
        padding: 8px;
        border-radius: 6px;
        cursor: pointer;
    }
    .nav-toggle span {
        display: block;
        width: 22px;
        height: 2px;
        background: #C9D4E0;
        margin: 4px 0;
        border-radius: 2px;
        transition: var(--transition);
    }
    .nav-toggle:hover span {
        background: #ffffff;
    }
    .nav-toggle:focus-visible {
        outline: 2px solid var(--neon);
        outline-offset: 2px;
    }

    /* Page Main */
    .article-page {
        padding: 40px 0 80px;
        min-height: 60vh;
    }

    /* Breadcrumb */
    .article-breadcrumb {
        font-size: 13px;
        color: var(--text-sub);
        margin-bottom: 28px;
        display: flex;
        flex-wrap: wrap;
        align-items: center;
        gap: 6px;
    }
    .article-breadcrumb a {
        color: var(--primary);
    }
    .article-breadcrumb a:hover {
        color: var(--primary-dark);
        text-decoration: underline;
    }
    .article-breadcrumb .sep {
        color: var(--text-muted);
        margin: 0 2px;
    }
    .article-breadcrumb .current {
        color: var(--text-sub);
        max-width: 260px;
        overflow: hidden;
        white-space: nowrap;
        text-overflow: ellipsis;
    }

    /* Article Header */
    .article-header {
        margin-bottom: 36px;
    }
    .article-category {
        display: inline-flex;
        align-items: center;
        background: var(--primary-soft);
        color: var(--primary);
        font-size: 13px;
        font-weight: 500;
        padding: 4px 12px;
        border-radius: 4px;
        margin-bottom: 14px;
    }
    .article-header h1 {
        font-size: 36px;
        line-height: 1.3;
        font-weight: 700;
        color: var(--text-main);
        margin-bottom: 16px;
    }
    .article-meta {
        display: flex;
        align-items: center;
        flex-wrap: wrap;
        gap: 18px;
        font-size: 13px;
        color: var(--text-muted);
    }
    .article-meta .meta-item {
        display: inline-flex;
        align-items: center;
        gap: 6px;
    }
    .article-meta svg {
        width: 16px;
        height: 16px;
        stroke: var(--text-muted);
        flex-shrink: 0;
    }

    /* Article Body */
    .article-body {
        background: var(--bg-white);
        border-radius: var(--radius-card);
        padding: 40px 48px;
        margin-bottom: 36px;
        box-shadow: none;
        border: 1px solid var(--border);
    }
    .article-body-content {
        font-size: 16px;
        line-height: 1.75;
        color: var(--text-main);
    }
    .article-body-content p {
        margin-bottom: 18px;
    }
    .article-body-content h2 {
        font-size: 24px;
        font-weight: 700;
        line-height: 1.4;
        margin: 36px 0 16px;
        color: var(--text-main);
    }
    .article-body-content h3 {
        font-size: 18px;
        font-weight: 600;
        line-height: 1.5;
        margin: 28px 0 12px;
        color: var(--text-main);
    }
    .article-body-content h4 {
        font-size: 16px;
        font-weight: 600;
        margin: 20px 0 10px;
    }
    .article-body-content ul,
    .article-body-content ol {
        margin: 0 0 18px;
        padding-left: 22px;
    }
    .article-body-content li {
        margin-bottom: 8px;
    }
    .article-body-content blockquote {
        border-left: 4px solid var(--primary);
        background: var(--primary-soft);
        padding: 16px 20px;
        border-radius: 0 8px 8px 0;
        margin: 20px 0;
        color: var(--text-sub);
    }
    .article-body-content blockquote p {
        margin-bottom: 0;
    }
    .article-body-content img {
        border-radius: 8px;
        margin: 24px 0;
        box-shadow: var(--shadow-card);
    }
    .article-body-content a {
        color: var(--primary);
        text-decoration: underline;
        text-decoration-color: rgba(43, 111, 174, 0.3);
    }
    .article-body-content a:hover {
        text-decoration-color: var(--primary);
    }
    .article-body-content code {
        background: var(--bg-base);
        border: 1px solid var(--border);
        border-radius: 4px;
        padding: 2px 6px;
        font-size: 14px;
        color: var(--primary-dark);
    }
    .article-body-content table {
        width: 100%;
        border-collapse: collapse;
        margin: 20px 0;
        font-size: 14px;
    }
    .article-body-content table th,
    .article-body-content table td {
        border: 1px solid var(--border);
        padding: 10px 14px;
        text-align: left;
    }
    .article-body-content table th {
        background: var(--primary-soft);
        font-weight: 600;
    }

    /* Article Bottom Nav */
    .article-bottom-nav {
        display: flex;
        align-items: center;
        justify-content: space-between;
        gap: 16px;
        padding: 24px 0;
        border-top: 1px solid var(--border);
        border-bottom: 1px solid var(--border);
        margin-bottom: 48px;
    }
    .article-bottom-nav .btn-back {
        display: inline-flex;
        align-items: center;
        gap: 8px;
        font-size: 14px;
        font-weight: 500;
        color: var(--text-sub);
        padding: 10px 18px;
        border: 1px solid var(--border);
        border-radius: var(--radius-btn);
        background: var(--bg-white);
        transition: var(--transition);
    }
    .article-bottom-nav .btn-back:hover {
        color: var(--primary);
        border-color: var(--primary);
        background: var(--primary-soft);
    }
    .article-bottom-nav .btn-back:focus-visible {
        outline: 2px solid var(--primary);
        outline-offset: 2px;
    }

    /* Not Found */
    .article-not-found {
        background: var(--bg-white);
        border: 1px solid var(--border);
        border-radius: var(--radius-card);
        padding: 80px 48px;
        text-align: center;
    }
    .article-not-found .nf-icon {
        width: 72px;
        height: 72px;
        background: var(--primary-soft);
        border-radius: 50%;
        display: flex;
        align-items: center;
        justify-content: center;
        margin: 0 auto 24px;
    }
    .article-not-found h2 {
        font-size: 24px;
        margin-bottom: 12px;
    }
    .article-not-found p {
        color: var(--text-sub);
        margin-bottom: 24px;
    }
    .article-not-found .btn-home {
        display: inline-flex;
        align-items: center;
        gap: 8px;
        background: var(--primary);
        color: #ffffff;
        font-size: 14px;
        font-weight: 600;
        padding: 12px 28px;
        border-radius: var(--radius-btn);
        transition: var(--transition);
    }
    .article-not-found .btn-home:hover {
        background: var(--primary-dark);
    }

    /* Related Section */
    .related-section {
        margin-top: 16px;
    }
    .related-section .section-title {
        font-size: 24px;
        font-weight: 700;
        margin-bottom: 24px;
        color: var(--text-main);
        position: relative;
        padding-left: 16px;
    }
    .related-section .section-title::before {
        content: "";
        position: absolute;
        left: 0;
        top: 4px;
        bottom: 4px;
        width: 4px;
        border-radius: 2px;
        background: var(--neon);
    }
    .related-grid {
        display: grid;
        grid-template-columns: repeat(3, 1fr);
        gap: 24px;
    }
    .related-card {
        background: var(--bg-white);
        border-radius: var(--radius-card);
        overflow: hidden;
        border: 1px solid var(--border);
        transition: var(--transition);
        display: block;
    }
    .related-card:hover {
        transform: translateY(-2px);
        box-shadow: var(--shadow-hover);
    }
    .related-card:focus-visible {
        outline: 2px solid var(--primary);
        outline-offset: 2px;
    }
    .related-cover {
        position: relative;
        aspect-ratio: 16 / 9;
        overflow: hidden;
        background: var(--primary-soft);
    }
    .related-cover img {
        width: 100%;
        height: 100%;
        object-fit: cover;
        transition: transform 0.3s ease;
    }
    .related-card:hover .related-cover img {
        transform: scale(1.03);
    }
    .related-cover .related-tag {
        position: absolute;
        top: 12px;
        left: 12px;
        background: rgba(12, 20, 32, 0.7);
        color: #ffffff;
        font-size: 12px;
        padding: 3px 10px;
        border-radius: 4px;
        backdrop-filter: blur(4px);
    }
    .related-info {
        padding: 20px;
    }
    .related-info h3 {
        font-size: 16px;
        line-height: 1.5;
        margin-bottom: 8px;
        color: var(--text-main);
        display: -webkit-box;
        -webkit-line-clamp: 2;
        -webkit-box-orient: vertical;
        overflow: hidden;
    }
    .related-info p {
        font-size: 13px;
        color: var(--text-sub);
        line-height: 1.6;
        display: -webkit-box;
        -webkit-line-clamp: 2;
        -webkit-box-orient: vertical;
        overflow: hidden;
    }
    .related-meta {
        display: flex;
        align-items: center;
        justify-content: space-between;
        margin-top: 14px;
        font-size: 12px;
        color: var(--text-muted);
    }

    /* CTA Section */
    .article-cta {
        margin-top: 64px;
        text-align: center;
    }
    .cta-panel {
        background: var(--bg-white);
        border-radius: var(--radius-panel);
        box-shadow: 0 8px 32px rgba(18, 52, 86, 0.06);
        padding: 48px 40px;
        border: 1px dashed var(--primary-light);
        position: relative;
    }
    .cta-panel::before {
        content: "";
        position: absolute;
        inset: 0;
        border-radius: var(--radius-panel);
        background-image: linear-gradient(rgba(43, 111, 174, 0.03) 1px, transparent 1px),
            linear-gradient(90deg, rgba(43, 111, 174, 0.03) 1px, transparent 1px);
        background-size: 20px 20px;
        pointer-events: none;
    }
    .cta-panel h3 {
        font-size: 22px;
        font-weight: 700;
        margin-bottom: 12px;
    }
    .cta-panel p {
        color: var(--text-sub);
        font-size: 14px;
        margin-bottom: 28px;
    }
    .cta-actions {
        display: flex;
        align-items: center;
        justify-content: center;
        gap: 16px;
        flex-wrap: wrap;
    }
    .btn-cta-primary {
        background: var(--cta);
        color: #ffffff;
        font-size: 14px;
        font-weight: 600;
        padding: 12px 32px;
        border-radius: var(--radius-btn);
        transition: var(--transition);
        box-shadow: 0 2px 12px rgba(242, 169, 59, 0.25);
    }
    .btn-cta-primary:hover {
        background: var(--cta-hover);
        box-shadow: 0 4px 18px rgba(242, 169, 59, 0.35);
        transform: translateY(-1px);
        color: #ffffff;
    }
    .btn-cta-secondary {
        background: var(--bg-white);
        border: 1px solid var(--primary);
        color: var(--primary);
        font-size: 14px;
        font-weight: 600;
        padding: 12px 26px;
        border-radius: var(--radius-btn);
        transition: var(--transition);
    }
    .btn-cta-secondary:hover {
        background: var(--primary-soft);
        box-shadow: 0 2px 8px rgba(43, 111, 174, 0.15);
    }
    .btn-cta-secondary:focus-visible,
    .btn-cta-primary:focus-visible {
        outline: 2px solid var(--primary);
        outline-offset: 2px;
    }

    /* Footer */
    .site-footer {
        background: var(--nav-dark);
        color: #C9D4E0;
        margin-top: 40px;
    }
    .footer-neon-line {
        height: 2px;
        background: linear-gradient(90deg, transparent 0%, var(--neon) 50%, transparent 100%);
        box-shadow: 0 0 12px var(--neon-glow);
        border: none;
    }
    .footer-inner {
        max-width: var(--container-width);
        margin: 0 auto;
        padding: 48px 24px 32px;
        display: grid;
        grid-template-columns: 1.4fr 1fr 1fr;
        gap: 40px;
    }
    .footer-brand h3 {
        font-size: 18px;
        color: #ffffff;
        margin-bottom: 12px;
    }
    .footer-brand p {
        font-size: 13px;
        color: #7C8B9A;
        line-height: 1.7;
        max-width: 360px;
    }
    .footer-col h4 {
        font-size: 14px;
        color: #ffffff;
        margin-bottom: 16px;
        font-weight: 600;
    }
    .footer-col ul {
        list-style: none;
    }
    .footer-col ul li {
        margin-bottom: 10px;
    }
    .footer-col ul li a {
        color: #9AA8B5;
        font-size: 13px;
        transition: var(--transition);
    }
    .footer-col ul li a:hover {
        color: #ffffff;
    }
    .footer-bottom {
        border-top: 1px solid rgba(255, 255, 255, 0.06);
        padding: 20px 0;
        text-align: center;
    }
    .footer-bottom span {
        font-size: 12px;
        color: #7C8B9A;
        display: block;
    }

    /* Responsive */
    @media (max-width: 1024px) {
        .related-grid {
            grid-template-columns: repeat(2, 1fr);
        }
        .header-inner {
            gap: 16px;
        }
    }
    @media (max-width: 768px) {
        .site-header {
            height: auto;
            min-height: 64px;
        }
        .header-inner {
            flex-wrap: wrap;
            padding: 0 16px;
            gap: 0;
        }
        .logo {
            height: 64px;
        }
        .nav-toggle {
            display: block;
            order: 3;
            margin-left: auto;
        }
        .nav-menu {
            display: none;
            flex: 1 1 100%;
            flex-direction: column;
            gap: 4px;
            padding: 0 0 20px;
            align-items: stretch;
        }
        .nav-menu.open {
            display: flex;
        }
        .nav-menu .nav-link {
            padding: 12px 14px;
            text-align: left;
            border-radius: 8px;
        }
        .nav-menu .nav-link.active::after {
            display: none;
        }
        .nav-menu .nav-link.active {
            background: rgba(0, 201, 167, 0.12);
            color: var(--neon);
        }
        .nav-cta {
            order: 2;
            margin-right: 12px;
            padding: 8px 16px;
            font-size: 13px;
        }
        .article-page {
            padding: 24px 0 48px;
        }
        .article-body {
            padding: 24px 20px;
        }
        .article-header h1 {
            font-size: 26px;
        }
        .article-bottom-nav {
            flex-direction: column;
            align-items: stretch;
        }
        .related-grid {
            grid-template-columns: 1fr;
        }
        .footer-inner {
            grid-template-columns: 1fr;
            gap: 28px;
            padding: 40px 24px 24px;
        }
        .footer-brand p {
            max-width: 100%;
        }
        .cta-panel {
            padding: 32px 20px;
        }
        .cta-panel h3 {
            font-size: 20px;
        }
    }
    @media (max-width: 480px) {
        .logo-text {
            font-size: 16px;
        }
        .header-inner {
            padding: 0 12px;
        }
        .nav-cta {
            padding: 7px 12px;
            font-size: 12px;
        }
        .container,
        .container-sm {
            padding-left: 16px;
            padding-right: 16px;
        }
        .article-meta {
            gap: 12px;
            flex-direction: column;
            align-items: flex-start;
        }
        .article-body {
            padding: 20px 16px;
        }
        .article-body-content {
            font-size: 15px;
        }
        .article-body-content h2 {
            font-size: 20px;
        }
        .article-body-content h3 {
            font-size: 17px;
        }
        .footer-inner {
            padding: 32px 16px 20px;
        }
        .footer-col ul li a {
            font-size: 13px;
        }
        .cta-actions {
            flex-direction: column;
        }
        .btn-cta-primary,
        .btn-cta-secondary {
            width: 100%;
            text-align: center;
            justify-content: center;
        }
    }

/* roulang page: category1 */
:root {
      --primary: #2B6FAE;
      --primary-light: #D8E7F4;
      --primary-bg: #E6F0FA;
      --dark-bg: #0C1420;
      --neon: #00C9A7;
      --cta: #F2A93B;
      --cta-hover: #E89F2C;
      --text: #1F2A37;
      --text-secondary: #5B6B7C;
      --text-muted: #9AA8B5;
      --border: #E2EAF2;
      --bg: #F6F9FC;
      --white: #FFFFFF;
      --card-shadow: 0 4px 24px rgba(18, 52, 86, 0.08);
      --card-shadow-hover: 0 8px 32px rgba(18, 52, 86, 0.12);
      --radius-card: 12px;
      --radius-btn: 8px;
      --font-family: "PingFang SC", "Microsoft YaHei", "Noto Sans CJK SC", "Segoe UI", Helvetica, Arial, sans-serif;
      --transition: 0.25s ease;
    }
    *,
    *::before,
    *::after {
      box-sizing: border-box;
      margin: 0;
      padding: 0;
    }
    html {
      scroll-behavior: smooth;
    }
    body {
      font-family: var(--font-family);
      font-size: 16px;
      line-height: 1.75;
      color: var(--text);
      background: var(--bg);
      -webkit-font-smoothing: antialiased;
    }
    a {
      color: var(--primary);
      text-decoration: none;
      transition: color var(--transition);
    }
    a:hover {
      color: #1F4E7E;
    }
    img {
      max-width: 100%;
      display: block;
    }
    button,
    input,
    textarea {
      font-family: inherit;
      font-size: inherit;
    }
    button {
      cursor: pointer;
      border: none;
      background: none;
    }
    .container {
      max-width: 1200px;
      margin: 0 auto;
      padding: 0 24px;
    }
    .site-header {
      position: fixed;
      top: 0;
      left: 0;
      right: 0;
      z-index: 1000;
      height: 64px;
      background: var(--dark-bg);
      box-shadow: 0 2px 20px rgba(12, 20, 32, 0.55);
    }
    .header-inner {
      max-width: 1200px;
      margin: 0 auto;
      height: 64px;
      display: flex;
      align-items: center;
      justify-content: space-between;
      padding: 0 24px;
      gap: 20px;
    }
    .logo {
      display: flex;
      align-items: center;
      gap: 10px;
      flex-shrink: 0;
    }
    .logo-icon {
      width: 32px;
      height: 32px;
      flex-shrink: 0;
    }
    .logo-text {
      font-size: 18px;
      font-weight: 700;
      color: #FFFFFF;
      letter-spacing: 0.5px;
      white-space: nowrap;
    }
    .nav-menu {
      display: flex;
      align-items: center;
      gap: 8px;
      margin-left: auto;
    }
    .nav-link {
      display: block;
      padding: 10px 16px;
      font-size: 14px;
      font-weight: 500;
      color: #C9D4E0;
      border-radius: 6px;
      position: relative;
      transition: color var(--transition), background var(--transition);
    }
    .nav-link:hover {
      color: #FFFFFF;
      background: rgba(255, 255, 255, 0.06);
    }
    .nav-link.active {
      color: #FFFFFF;
    }
    .nav-link.active::after {
      content: "";
      position: absolute;
      bottom: 0;
      left: 14px;
      right: 14px;
      height: 3px;
      border-radius: 3px 3px 0 0;
      background: var(--neon);
      box-shadow: 0 0 10px rgba(0, 201, 167, 0.6);
    }
    .nav-cta {
      display: inline-flex;
      align-items: center;
      justify-content: center;
      padding: 9px 22px;
      background: var(--cta);
      color: #FFFFFF;
      font-size: 14px;
      font-weight: 600;
      border-radius: var(--radius-btn);
      box-shadow: 0 4px 14px rgba(242, 169, 59, 0.35);
      transition: background var(--transition), transform var(--transition), box-shadow var(--transition);
      white-space: nowrap;
    }
    .nav-cta:hover {
      background: var(--cta-hover);
      color: #FFFFFF;
      box-shadow: 0 6px 20px rgba(242, 169, 59, 0.4);
      transform: translateY(-1px);
    }
    .nav-toggle {
      display: none;
      flex-direction: column;
      gap: 5px;
      width: 40px;
      height: 40px;
      align-items: center;
      justify-content: center;
      border-radius: 6px;
      background: rgba(255, 255, 255, 0.05);
    }
    .nav-toggle span {
      display: block;
      width: 20px;
      height: 2px;
      background: #FFFFFF;
      border-radius: 2px;
      transition: transform var(--transition), opacity var(--transition);
    }
    .nav-toggle.active span:nth-child(1) {
      transform: translateY(7px) rotate(45deg);
    }
    .nav-toggle.active span:nth-child(2) {
      opacity: 0;
    }
    .nav-toggle.active span:nth-child(3) {
      transform: translateY(-7px) rotate(-45deg);
    }
    .page-hero {
      position: relative;
      padding: 140px 0 80px;
      background: linear-gradient(135deg, #EAF2FA 0%, #F6F9FC 100%);
      overflow: hidden;
    }
    .page-hero::before {
      content: "";
      position: absolute;
      inset: 0;
      background: url('/assets/images/backpic/back-1.webp') center center / cover no-repeat;
      opacity: 0.28;
      z-index: 0;
    }
    .page-hero::after {
      content: "";
      position: absolute;
      inset: 0;
      background: rgba(255, 255, 255, 0.28);
      z-index: 1;
    }
    .page-hero .container {
      position: relative;
      z-index: 2;
    }
    .breadcrumb {
      display: flex;
      flex-wrap: wrap;
      align-items: center;
      gap: 6px;
      font-size: 13px;
      color: var(--text-secondary);
      margin-bottom: 24px;
    }
    .breadcrumb a {
      color: var(--primary);
    }
    .breadcrumb a:hover {
      color: #1F4E7E;
      text-decoration: underline;
    }
    .breadcrumb .sep {
      color: var(--text-muted);
    }
    .breadcrumb .current {
      color: var(--text-secondary);
    }
    .page-hero h1 {
      font-size: 38px;
      line-height: 1.3;
      font-weight: 700;
      margin-bottom: 16px;
      color: var(--text);
      letter-spacing: 0.5px;
    }
    .page-hero .hero-subtitle {
      font-size: 17px;
      color: var(--text-secondary);
      max-width: 640px;
      line-height: 1.7;
      margin-bottom: 28px;
    }
    .hero-actions {
      display: flex;
      gap: 12px;
      flex-wrap: wrap;
    }
    .btn-primary {
      display: inline-flex;
      align-items: center;
      justify-content: center;
      padding: 12px 32px;
      background: var(--cta);
      color: #FFFFFF;
      font-size: 15px;
      font-weight: 600;
      border-radius: var(--radius-btn);
      box-shadow: 0 4px 14px rgba(242, 169, 59, 0.3);
      transition: background var(--transition), transform var(--transition), box-shadow var(--transition);
    }
    .btn-primary:hover {
      background: var(--cta-hover);
      color: #FFFFFF;
      transform: translateY(-1px);
      box-shadow: 0 6px 20px rgba(242, 169, 59, 0.4);
    }
    .btn-primary:active,
    .btn-secondary:active {
      transform: translateY(1px);
    }
    .btn-primary:focus-visible,
    .btn-secondary:focus-visible,
    .nav-cta:focus-visible,
    .nav-toggle:focus-visible {
      outline: 2px solid var(--primary);
      outline-offset: 2px;
    }
    .btn-secondary {
      display: inline-flex;
      align-items: center;
      justify-content: center;
      padding: 12px 32px;
      background: var(--white);
      color: var(--primary);
      font-size: 15px;
      font-weight: 600;
      border-radius: var(--radius-btn);
      border: 1px solid var(--primary);
      transition: background var(--transition), transform var(--transition), box-shadow var(--transition);
    }
    .btn-secondary:hover {
      background: var(--primary-bg);
      color: var(--primary);
      transform: translateY(-1px);
      box-shadow: 0 4px 12px rgba(43, 111, 174, 0.15);
    }
    .category-intro {
      padding: 60px 0 20px;
    }
    .category-intro .intro-box {
      background: var(--white);
      border-radius: var(--radius-card);
      padding: 36px 40px;
      box-shadow: var(--card-shadow);
      border-left: 4px solid var(--neon);
      max-width: 900px;
    }
    .category-intro p {
      font-size: 16px;
      color: var(--text-secondary);
      line-height: 1.75;
    }
    .featured-content {
      padding: 60px 0;
    }
    .section-header {
      margin-bottom: 40px;
    }
    .section-header .section-tag {
      display: inline-block;
      background: var(--primary-bg);
      color: var(--primary);
      font-size: 13px;
      font-weight: 500;
      padding: 4px 14px;
      border-radius: 20px;
      margin-bottom: 12px;
      letter-spacing: 0.5px;
    }
    .section-header h2 {
      font-size: 28px;
      line-height: 1.4;
      font-weight: 700;
      color: var(--text);
      margin-bottom: 8px;
    }
    .section-header p {
      color: var(--text-secondary);
      font-size: 15px;
      max-width: 520px;
    }
    .feature-grid {
      display: flex;
      flex-direction: column;
      gap: 40px;
    }
    .feature-row {
      display: flex;
      align-items: center;
      gap: 48px;
      background: var(--white);
      border-radius: var(--radius-card);
      padding: 28px;
      box-shadow: var(--card-shadow);
      transition: transform var(--transition), box-shadow var(--transition);
    }
    .feature-row:hover {
      transform: translateY(-2px);
      box-shadow: var(--card-shadow-hover);
    }
    .feature-row.reverse {
      flex-direction: row-reverse;
    }
    .feature-media {
      flex: 0 0 42%;
      border-radius: var(--radius-card);
      overflow: hidden;
      position: relative;
    }
    .feature-media img {
      width: 100%;
      height: 260px;
      object-fit: cover;
      transition: transform 0.4s ease;
    }
    .feature-row:hover .feature-media img {
      transform: scale(1.03);
    }
    .feature-content {
      flex: 1;
    }
    .feature-content .feature-number {
      font-size: 14px;
      font-weight: 600;
      color: var(--neon);
      letter-spacing: 1px;
      margin-bottom: 6px;
      display: block;
    }
    .feature-content h3 {
      font-size: 21px;
      line-height: 1.4;
      font-weight: 700;
      color: var(--text);
      margin-bottom: 14px;
    }
    .feature-content p {
      font-size: 15px;
      line-height: 1.75;
      color: var(--text-secondary);
      margin-bottom: 16px;
    }
    .feature-tags {
      display: flex;
      flex-wrap: wrap;
      gap: 8px;
    }
    .tag {
      display: inline-block;
      background: var(--primary-bg);
      color: var(--primary);
      font-size: 12px;
      font-weight: 500;
      padding: 3px 12px;
      border-radius: 4px;
      line-height: 1.6;
    }
    .login-steps {
      padding: 60px 0;
      background: var(--white);
      border-radius: 24px;
      margin: 20px 0;
      box-shadow: var(--card-shadow);
    }
    .login-steps .container {
      max-width: 960px;
    }
    .steps-grid {
      display: grid;
      grid-template-columns: repeat(4, 1fr);
      gap: 24px;
      margin-top: 36px;
    }
    .step-card {
      text-align: center;
      padding: 28px 20px;
      background: var(--bg);
      border-radius: var(--radius-card);
      border: 1px solid var(--border);
      transition: background var(--transition), transform var(--transition), box-shadow var(--transition);
    }
    .step-card:hover {
      background: var(--white);
      transform: translateY(-2px);
      box-shadow: var(--card-shadow);
    }
    .step-num {
      display: inline-flex;
      align-items: center;
      justify-content: center;
      width: 44px;
      height: 44px;
      border-radius: 50%;
      background: var(--primary);
      color: #FFFFFF;
      font-size: 18px;
      font-weight: 700;
      margin-bottom: 16px;
      box-shadow: 0 4px 12px rgba(43, 111, 174, 0.25);
    }
    .step-card h3 {
      font-size: 16px;
      font-weight: 600;
      color: var(--text);
      margin-bottom: 8px;
      line-height: 1.5;
    }
    .step-card p {
      font-size: 13px;
      color: var(--text-secondary);
      line-height: 1.65;
    }
    .scenarios {
      padding: 40px 0 60px;
    }
    .scenario-grid {
      display: grid;
      grid-template-columns: repeat(4, 1fr);
      gap: 24px;
      margin-top: 36px;
    }
    .scenario-card {
      background: var(--white);
      border-radius: var(--radius-card);
      padding: 28px 24px;
      box-shadow: var(--card-shadow);
      border-top: 3px solid var(--primary);
      transition: transform var(--transition), box-shadow var(--transition);
    }
    .scenario-card:nth-child(2) {
      border-top-color: var(--neon);
    }
    .scenario-card:nth-child(3) {
      border-top-color: var(--cta);
    }
    .scenario-card:nth-child(4) {
      border-top-color: var(--primary);
    }
    .scenario-card:hover {
      transform: translateY(-3px);
      box-shadow: var(--card-shadow-hover);
    }
    .scenario-card .scenario-icon {
      width: 48px;
      height: 48px;
      border-radius: 50%;
      background: var(--primary-bg);
      display: flex;
      align-items: center;
      justify-content: center;
      margin-bottom: 12px;
    }
    .scenario-card .scenario-icon svg {
      width: 24px;
      height: 24px;
      stroke: var(--primary);
      fill: none;
      stroke-width: 2;
      stroke-linecap: round;
      stroke-linejoin: round;
    }
    .scenario-card h3 {
      font-size: 16px;
      font-weight: 600;
      color: var(--text);
      margin-bottom: 8px;
      line-height: 1.5;
    }
    .scenario-card p {
      font-size: 13px;
      color: var(--text-secondary);
      line-height: 1.65;
    }
    .faq-section {
      padding: 60px 0;
    }
    .faq-section .container {
      max-width: 860px;
    }
    .faq-list {
      margin-top: 32px;
      border: 1px solid var(--border);
      border-radius: var(--radius-card);
      overflow: hidden;
      background: var(--white);
    }
    .faq-item {
      border-bottom: 1px solid var(--border);
      background: var(--white);
      transition: background var(--transition);
    }
    .faq-item:last-child {
      border-bottom: none;
    }
    .faq-item.active {
      background: var(--bg);
    }
    .faq-question {
      display: flex;
      justify-content: space-between;
      align-items: center;
      padding: 20px 24px;
      cursor: pointer;
      font-size: 15px;
      font-weight: 500;
      color: var(--text);
      background: none;
      text-align: left;
      width: 100%;
      gap: 16px;
    }
    .faq-question:hover {
      color: var(--primary);
    }
    .faq-item.active .faq-question {
      color: var(--primary);
      font-weight: 600;
    }
    .faq-icon {
      flex-shrink: 0;
      position: relative;
      width: 18px;
      height: 18px;
      border-radius: 50%;
      background: var(--primary-bg);
      transition: background var(--transition), transform var(--transition);
    }
    .faq-icon::before,
    .faq-icon::after {
      content: "";
      position: absolute;
      background: var(--primary);
      border-radius: 1px;
      transition: transform var(--transition);
    }
    .faq-icon::before {
      top: 8px;
      left: 5px;
      right: 5px;
      height: 2px;
    }
    .faq-icon::after {
      left: 8px;
      top: 5px;
      bottom: 5px;
      width: 2px;
    }
    .faq-item.active .faq-icon {
      background: var(--primary);
      transform: rotate(180deg);
    }
    .faq-item.active .faq-icon::before,
    .faq-item.active .faq-icon::after {
      background: #FFFFFF;
    }
    .faq-item.active .faq-icon::after {
      transform: scaleY(0);
    }
    .faq-answer {
      max-height: 0;
      overflow: hidden;
      transition: max-height 0.3s ease;
    }
    .faq-answer p {
      padding: 0 24px 20px;
      font-size: 14px;
      line-height: 1.75;
      color: var(--text-secondary);
    }
    .cta-panel {
      padding: 60px 0;
    }
    .cta-box {
      background: var(--white);
      border-radius: 16px;
      padding: 48px 40px;
      text-align: center;
      box-shadow: 0 8px 32px rgba(18, 52, 86, 0.06);
      border: 1px dashed var(--border);
      position: relative;
    }
    .cta-box h2 {
      font-size: 26px;
      font-weight: 700;
      color: var(--text);
      margin-bottom: 10px;
    }
    .cta-box p {
      color: var(--text-secondary);
      font-size: 15px;
      margin-bottom: 28px;
    }
    .cta-actions {
      display: flex;
      justify-content: center;
      align-items: center;
      gap: 16px;
      flex-wrap: wrap;
      margin-bottom: 24px;
    }
    .share-row {
      display: flex;
      align-items: center;
      justify-content: center;
      gap: 16px;
      margin-top: 20px;
    }
    .share-label {
      font-size: 13px;
      color: var(--text-muted);
      margin-right: 4px;
    }
    .share-btn {
      display: inline-flex;
      align-items: center;
      justify-content: center;
      width: 36px;
      height: 36px;
      border-radius: 50%;
      background: var(--bg);
      border: 1px solid var(--border);
      transition: background var(--transition), border-color var(--transition), transform var(--transition);
      color: var(--primary);
    }
    .share-btn:hover {
      background: var(--primary-bg);
      border-color: var(--primary);
      transform: translateY(-2px);
    }
    .share-btn svg {
      width: 16px;
      height: 16px;
      fill: none;
      stroke: currentColor;
      stroke-width: 2;
      stroke-linecap: round;
      stroke-linejoin: round;
    }
    .more-target {
      padding: 20px 0 0;
      text-align: center;
    }
    .more-target span {
      display: inline-block;
      background: var(--bg);
      border: 1px dashed var(--border);
      color: var(--text-muted);
      font-size: 13px;
      padding: 10px 32px;
      border-radius: 20px;
    }
    .site-footer {
      background: var(--dark-bg);
      color: #C9D4E0;
      margin-top: 60px;
    }
    .footer-neon-line {
      height: 1px;
      background: linear-gradient(90deg, transparent, var(--neon), transparent);
    }
    .footer-inner {
      max-width: 1200px;
      margin: 0 auto;
      display: grid;
      grid-template-columns: 2fr 1fr 1fr;
      gap: 48px;
      padding: 48px 24px 32px;
    }
    .footer-brand h3 {
      color: #FFFFFF;
      font-size: 20px;
      font-weight: 700;
      margin-bottom: 12px;
    }
    .footer-brand p {
      color: #7C8B9A;
      font-size: 14px;
      line-height: 1.7;
      max-width: 320px;
    }
    .footer-col h4 {
      color: #FFFFFF;
      font-size: 15px;
      font-weight: 600;
      margin-bottom: 16px;
    }
    .footer-col ul {
      list-style: none;
    }
    .footer-col ul li {
      margin-bottom: 10px;
    }
    .footer-col ul li a {
      color: #9AA8B5;
      font-size: 14px;
      transition: color var(--transition);
    }
    .footer-col ul li a:hover {
      color: #FFFFFF;
    }
    .footer-bottom {
      border-top: 1px solid rgba(255, 255, 255, 0.06);
      padding: 20px 0;
    }
    .footer-bottom .container {
      display: flex;
      justify-content: center;
      align-items: center;
      flex-wrap: wrap;
      gap: 8px;
    }
    .footer-bottom span {
      font-size: 12px;
      color: #7C8B9A;
    }
    @media (max-width: 1024px) {
      .steps-grid {
        grid-template-columns: repeat(2, 1fr);
      }
      .scenario-grid {
        grid-template-columns: repeat(2, 1fr);
      }
      .feature-row {
        flex-direction: column;
        gap: 24px;
      }
      .feature-row.reverse {
        flex-direction: column;
      }
      .feature-media {
        flex: 0 0 100%;
        width: 100%;
      }
      .feature-media img {
        height: 220px;
      }
    }
    @media (max-width: 768px) {
      .container {
        padding: 0 16px;
      }
      .header-inner {
        padding: 0 16px;
      }
      .nav-toggle {
        display: flex;
      }
      .nav-menu {
        position: fixed;
        top: 64px;
        left: 0;
        right: 0;
        background: var(--dark-bg);
        flex-direction: column;
        padding: 16px 24px;
        gap: 4px;
        box-shadow: 0 8px 24px rgba(12, 20, 32, 0.4);
        transform: translateY(-120%);
        transition: transform 0.3s ease;
        align-items: stretch;
      }
      .nav-menu.open {
        transform: translateY(0);
      }
      .nav-link {
        padding: 12px 16px;
        border-radius: 8px;
      }
      .nav-link.active::after {
        left: 16px;
        right: auto;
        width: 40px;
        height: 3px;
        border-radius: 3px;
      }
      .nav-cta {
        display: none;
      }
      .page-hero {
        padding: 110px 0 48px;
      }
      .page-hero h1 {
        font-size: 26px;
      }
      .page-hero .hero-subtitle {
        font-size: 15px;
      }
      .hero-actions {
        flex-direction: column;
      }
      .hero-actions .btn-primary,
      .hero-actions .btn-secondary {
        width: 100%;
      }
      .category-intro {
        padding: 40px 0 16px;
      }
      .category-intro .intro-box {
        padding: 24px 20px;
      }
      .section-header h2 {
        font-size: 22px;
      }
      .section-header {
        margin-bottom: 28px;
      }
      .feature-row {
        padding: 20px;
      }
      .feature-media img {
        height: 180px;
      }
      .steps-grid {
        grid-template-columns: 1fr;
      }
      .scenario-grid {
        grid-template-columns: 1fr;
      }
      .cta-box {
        padding: 32px 20px;
      }
      .cta-actions {
        flex-direction: column;
      }
      .cta-actions .btn-primary,
      .cta-actions .btn-secondary {
        width: 100%;
      }
      .footer-inner {
        grid-template-columns: 1fr;
        gap: 32px;
        padding: 32px 16px 24px;
      }
      .faq-question {
        padding: 16px 20px;
        font-size: 14px;
      }
      .faq-answer p {
        padding: 0 20px 16px;
        font-size: 13px;
      }
    }
    @media (max-width: 480px) {
      .logo-text {
        font-size: 16px;
      }
      .footer-inner {
        grid-template-columns: 1fr;
      }
      .footer-col ul {
        display: flex;
        flex-wrap: wrap;
        gap: 8px 16px;
      }
      .footer-col ul li {
        margin-bottom: 0;
      }
      .share-row {
        flex-wrap: wrap;
      }
    }