/* roulang page: index */
:root {
  --bg-page: #F6F8FB;
  --surface: #FFFFFF;
  --primary: #3A6C9F;
  --primary-strong: #2E557D;
  --primary-light: #EAF0F6;
  --accent: #E09A3F;
  --accent-strong: #C97E28;
  --success: #2F9E6E;
  --danger: #D45664;
  --warning: #E6A23C;
  --text-primary: #1C2A38;
  --text-secondary: #526579;
  --text-tertiary: #8B9AA8;
  --border: #E3EAF2;
  --shadow-card: 0 8px 24px rgba(28, 55, 90, 0.08);
  --shadow-hover: 0 12px 32px rgba(28, 55, 90, 0.14);
  --radius-card: 12px;
  --radius-btn: 8px;
  --radius-input: 10px;
  --radius-tag: 999px;
  --font-main: -apple-system, BlinkMacSystemFont, "PingFang SC", "Hiragino Sans GB", "Microsoft YaHei", "Noto Sans CJK SC", sans-serif;
  --container-width: 1200px;
  --section-space: 96px;
  --section-space-mobile: 56px;
}
*, *::before, *::after { margin: 0; padding: 0; box-sizing: border-box; }
html { scroll-behavior: smooth; -webkit-text-size-adjust: 100%; }
body {
  font-family: var(--font-main);
  font-size: 16px;
  line-height: 1.75;
  color: var(--text-primary);
  background: var(--bg-page);
  -webkit-font-smoothing: antialiased;
}
img { max-width: 100%; display: block; }
a { text-decoration: none; color: inherit; transition: color .2s ease; }
a:hover { color: var(--primary); }
button, input, textarea { font-family: inherit; font-size: inherit; border: none; outline: none; }
ul, ol { list-style: none; }
.container { max-width: var(--container-width); margin: 0 auto; padding: 0 24px; }
.section { padding: var(--section-space) 0; }
.section-tight { padding: 48px 0; }
.section-head { text-align: center; max-width: 640px; margin: 0 auto 48px; }
.section-head .section-kicker { display: inline-block; font-size: 13px; font-weight: 600; color: var(--primary); background: var(--primary-light); padding: 4px 14px; border-radius: var(--radius-tag); letter-spacing: .5px; margin-bottom: 12px; }
.section-head h2 { font-size: 28px; line-height: 1.3; font-weight: 700; color: var(--text-primary); }
.section-head p { margin-top: 12px; color: var(--text-secondary); font-size: 16px; }

.btn { display: inline-flex; align-items: center; justify-content: center; gap: 8px; font-size: 15px; font-weight: 600; padding: 10px 22px; border-radius: var(--radius-btn); cursor: pointer; transition: all .2s ease; line-height: 1.4; border: 1px solid transparent; }
.btn-primary { background: var(--primary); color: #fff; }
.btn-primary:hover { background: var(--primary-strong); color: #fff; transform: translateY(-2px); box-shadow: 0 8px 20px rgba(46, 85, 125, .25); }
.btn-primary:active { transform: translateY(0); box-shadow: none; }
.btn-accent { background: var(--accent); color: #fff; }
.btn-accent:hover { background: var(--accent-strong); color: #fff; transform: translateY(-2px); box-shadow: 0 8px 20px rgba(201, 126, 40, .3); }
.btn-accent:active { transform: translateY(0); box-shadow: none; }
.btn-outline { background: transparent; border-color: var(--primary); color: var(--primary); }
.btn-outline:hover { background: var(--primary-light); color: var(--primary-strong); border-color: var(--primary-strong); }
.btn-white { background: #fff; color: var(--primary); }
.btn-white:hover { background: #F0F4F8; color: var(--primary-strong); transform: translateY(-2px); box-shadow: 0 8px 24px rgba(0,0,0,.12); }
.btn-sm { padding: 7px 16px; font-size: 14px; }
.btn-block { width: 100%; }
.btn:focus-visible, a:focus-visible, input:focus-visible, button:focus-visible { outline: 2px solid rgba(58,108,159,.4); outline-offset: 2px; }

.badge { display: inline-flex; align-items: center; gap: 4px; font-size: 12px; font-weight: 600; color: var(--primary); background: var(--primary-light); padding: 3px 12px; border-radius: var(--radius-tag); }

/* Header */
.site-header { position: fixed; top: 0; left: 0; width: 100%; height: 64px; background: rgba(255,255,255,.9); backdrop-filter: blur(8px); -webkit-backdrop-filter: blur(8px); border-bottom: 1px solid var(--border); z-index: 1000; }
.header-inner { height: 64px; display: flex; align-items: center; gap: 28px; }
.logo { display: flex; align-items: center; gap: 10px; flex-shrink: 0; }
.logo-icon { width: 34px; height: 34px; background: var(--primary); border-radius: 9px; display: flex; align-items: center; justify-content: center; color: #fff; font-size: 15px; }
.logo-text { font-size: 17px; font-weight: 700; color: var(--text-primary); letter-spacing: .3px; white-space: nowrap; }
.main-nav { display: flex; align-items: center; gap: 26px; margin-left: 12px; }
.main-nav .nav-link { position: relative; font-size: 15px; font-weight: 500; color: var(--text-secondary); padding: 6px 2px; transition: color .2s; }
.main-nav .nav-link:hover { color: var(--primary); }
.main-nav .nav-link.active { color: var(--primary); font-weight: 600; }
.main-nav .nav-link.active::after { content: ''; position: absolute; left: 0; bottom: -2px; width: 100%; height: 2px; background: var(--primary); border-radius: 2px; }
.header-right { margin-left: auto; display: flex; align-items: center; gap: 16px; }
.cmd-search { display: flex; align-items: center; gap: 8px; background: #F2F5F9; border: 1px solid var(--border); border-radius: var(--radius-input); padding: 0 12px; height: 38px; width: 210px; transition: border-color .2s, box-shadow .2s; }
.cmd-search:hover, .cmd-search:focus-within { border-color: var(--primary); box-shadow: 0 0 0 3px rgba(58,108,159,.12); }
.cmd-search i { color: var(--text-tertiary); font-size: 14px; }
.cmd-search input { flex: 1; background: transparent; border: none; color: var(--text-primary); font-size: 14px; min-width: 0; }
.cmd-search input::placeholder { color: var(--text-tertiary); }
.cmd-search .kbd { font-size: 11px; color: var(--text-tertiary); background: var(--surface); border: 1px solid var(--border); border-radius: 4px; padding: 1px 6px; white-space: nowrap; }
.menu-toggle { display: none; background: none; font-size: 20px; color: var(--text-primary); cursor: pointer; width: 40px; height: 40px; border-radius: 8px; align-items: center; justify-content: center; }
.menu-toggle:hover { background: var(--primary-light); }
.mobile-menu { display: none; position: fixed; top: 64px; left: 0; width: 100%; background: #fff; border-bottom: 1px solid var(--border); box-shadow: 0 16px 32px rgba(28,55,90,.1); padding: 12px 0; z-index: 999; }
.mobile-menu.open { display: block; }
.mobile-menu .mobile-nav-list { display: flex; flex-direction: column; }
.mobile-menu .mobile-nav-link { padding: 14px 24px; font-size: 16px; color: var(--text-primary); border-bottom: 1px solid #F0F4F8; }
.mobile-menu .mobile-nav-link:last-child { border-bottom: none; }
.mobile-menu .mobile-nav-link.active { color: var(--primary); font-weight: 600; background: var(--primary-light); }
.mobile-menu .mobile-cta { padding: 16px 24px; }

/* Hero */
.hero { position: relative; padding: 140px 0 80px; background: linear-gradient(105deg, rgba(255,255,255,.96) 0%, rgba(246,248,251,.92) 45%, rgba(234,240,246,.78) 100%), url('/assets/images/backpic/back-1.png') center/cover no-repeat; border-bottom: 1px solid var(--border); }
.hero-inner { display: grid; grid-template-columns: 1fr 1fr; gap: 48px; align-items: center; }
.hero-copy { max-width: 560px; }
.hero-badge { display: inline-flex; align-items: center; gap: 6px; background: var(--primary-light); color: var(--primary); font-size: 13px; font-weight: 600; padding: 5px 14px; border-radius: var(--radius-tag); margin-bottom: 20px; }
.hero-badge i { font-size: 12px; }
.hero h1 { font-size: 38px; line-height: 1.25; font-weight: 700; color: var(--text-primary); margin-bottom: 16px; letter-spacing: .5px; }
.hero-sub { font-size: 17px; line-height: 1.75; color: var(--text-secondary); margin-bottom: 28px; max-width: 480px; }
.hero-actions { display: flex; align-items: center; gap: 14px; flex-wrap: wrap; }
.hero-note { display: flex; align-items: center; gap: 8px; font-size: 13px; color: var(--text-tertiary); margin-top: 16px; }
.hero-note i { color: var(--success); }

.login-panel { background: var(--surface); border: 1px solid var(--border); border-radius: 20px; box-shadow: var(--shadow-hover); padding: 24px; max-width: 420px; margin-left: auto; }
.panel-topbar { display: flex; gap: 6px; margin-bottom: 20px; }
.panel-topbar .dot { width: 10px; height: 10px; border-radius: 50%; }
.panel-topbar .dot-red { background: #E96A6A; }
.panel-topbar .dot-yellow { background: #E6A23C; }
.panel-topbar .dot-green { background: #65B687; }
.panel-brand { display: flex; align-items: center; gap: 10px; margin-bottom: 22px; padding-bottom: 18px; border-bottom: 1px solid var(--border); }
.panel-brand i { width: 32px; height: 32px; border-radius: 8px; background: var(--primary); color: #fff; display: flex; align-items: center; justify-content: center; font-size: 14px; }
.panel-brand span { font-weight: 600; font-size: 15px; color: var(--text-primary); }
.panel-field { display: flex; align-items: center; gap: 10px; background: #F9FBFC; border: 1px solid var(--border); border-radius: var(--radius-input); padding: 0 14px; height: 44px; margin-bottom: 14px; color: var(--text-tertiary); font-size: 14px; transition: border-color .2s; }
.panel-field i { font-size: 14px; color: var(--text-tertiary); }
.panel-meta { display: flex; justify-content: space-between; align-items: center; margin: 14px 0 18px; font-size: 13px; color: var(--text-secondary); }
.panel-meta label { display: flex; align-items: center; gap: 6px; cursor: pointer; }
.panel-meta a { color: var(--primary); }
.panel-btn { width: 100%; height: 44px; background: var(--accent); color: #fff; border-radius: var(--radius-btn); font-weight: 600; font-size: 15px; cursor: pointer; transition: all .2s; }
.panel-btn:hover { background: var(--accent-strong); }
.panel-foot { text-align: center; margin-top: 14px; font-size: 13px; color: var(--text-secondary); }
.panel-foot a { color: var(--primary); font-weight: 500; }

/* Trust bar */
.trust-bar { background: var(--surface); border-bottom: 1px solid var(--border); }
.trust-inner { display: grid; grid-template-columns: repeat(4, 1fr); gap: 24px; padding: 28px 0; }
.trust-item { display: flex; align-items: center; gap: 14px; }
.trust-icon { width: 42px; height: 42px; border-radius: 10px; background: var(--primary-light); color: var(--primary); display: flex; align-items: center; justify-content: center; font-size: 18px; flex-shrink: 0; }
.trust-text strong { display: block; font-size: 15px; color: var(--text-primary); }
.trust-text span { font-size: 13px; color: var(--text-secondary); }

/* Timeline */
.timeline-steps { display: grid; grid-template-columns: repeat(3, 1fr); gap: 24px; position: relative; }
.timeline-step { position: relative; background: var(--surface); border: 1px solid var(--border); border-radius: var(--radius-card); padding: 28px 24px; box-shadow: var(--shadow-card); transition: transform .25s, box-shadow .25s; }
.timeline-step:hover { transform: translateY(-4px); box-shadow: var(--shadow-hover); }
.step-number { width: 40px; height: 40px; border-radius: 50%; background: var(--primary); color: #fff; display: flex; align-items: center; justify-content: center; font-weight: 700; font-size: 16px; margin-bottom: 16px; }
.timeline-step h3 { font-size: 18px; margin-bottom: 8px; color: var(--text-primary); }
.timeline-step p { font-size: 14px; color: var(--text-secondary); line-height: 1.65; }
.timeline-connector { display: none; }

/* Feature blocks */
.feature-block { display: grid; grid-template-columns: 1fr 1fr; gap: 48px; align-items: center; margin-bottom: 64px; }
.feature-block:last-child { margin-bottom: 0; }
.feature-block.reverse .feature-img { order: 2; }
.feature-block.reverse .feature-text { order: 1; }
.feature-img { border-radius: 12px; overflow: hidden; box-shadow: var(--shadow-card); aspect-ratio: 4/3; }
.feature-img img { width: 100%; height: 100%; object-fit: cover; }
.feature-text .feature-tag { display: inline-flex; align-items: center; gap: 6px; font-size: 13px; font-weight: 600; color: var(--primary); background: var(--primary-light); padding: 4px 14px; border-radius: var(--radius-tag); margin-bottom: 12px; }
.feature-text h3 { font-size: 22px; margin-bottom: 12px; color: var(--text-primary); line-height: 1.35; }
.feature-text p { font-size: 15px; color: var(--text-secondary); line-height: 1.75; margin-bottom: 14px; }
.feature-text .feature-link { font-size: 14px; font-weight: 600; color: var(--primary); display: inline-flex; align-items: center; gap: 6px; }
.feature-text .feature-link i { transition: transform .2s; }
.feature-text .feature-link:hover i { transform: translateX(4px); }

/* Comparison table */
.compare-wrap { border: 1px solid var(--border); border-radius: var(--radius-card); overflow: hidden; background: var(--surface); box-shadow: var(--shadow-card); }
.compare-table { width: 100%; border-collapse: collapse; }
.compare-table th, .compare-table td { padding: 18px 20px; text-align: left; border-bottom: 1px solid var(--border); font-size: 14px; }
.compare-table th { background: #F2F5F9; font-size: 13px; font-weight: 600; color: var(--text-secondary); text-transform: uppercase; letter-spacing: .5px; }
.compare-table td { color: var(--text-secondary); }
.compare-table td:first-child { font-weight: 600; color: var(--text-primary); }
.compare-table tr:last-child td { border-bottom: none; }
.compare-table tr.recommend { background: var(--primary-light); }
.compare-table tr.recommend td { color: var(--text-primary); }
.compare-table tr.recommend td:first-child { color: var(--primary); }
.recommend-tag { display: inline-block; background: var(--accent); color: #fff; font-size: 11px; font-weight: 700; padding: 2px 10px; border-radius: var(--radius-tag); margin-left: 8px; vertical-align: middle; }
.compare-table .check { color: var(--success); margin-right: 4px; }

/* CTA + Form */
.cta-block { background: var(--primary); position: relative; overflow: hidden; border-radius: 0; }
.cta-block::before { content: ''; position: absolute; inset: 0; background: url('/assets/images/backpic/back-2.webp') center/cover no-repeat; opacity: .12; }
.cta-inner { position: relative; display: grid; grid-template-columns: 1fr 1fr; gap: 48px; align-items: center; }
.cta-copy { color: #fff; }
.cta-copy h2 { font-size: 28px; line-height: 1.3; margin-bottom: 14px; color: #fff; }
.cta-copy p { font-size: 15px; line-height: 1.75; color: rgba(255,255,255,.85); margin-bottom: 24px; max-width: 440px; }
.cta-copy .btn { border: none; }
.login-form-card { background: var(--surface); border-radius: 16px; padding: 28px; box-shadow: 0 16px 48px rgba(0,0,0,.18); max-width: 440px; width: 100%; }
.login-form-card h3 { font-size: 20px; margin-bottom: 4px; color: var(--text-primary); }
.login-form-card .form-sub { font-size: 13px; color: var(--text-tertiary); margin-bottom: 18px; }
.form-group { margin-bottom: 14px; }
.form-group label { display: block; font-size: 13px; font-weight: 600; color: var(--text-primary); margin-bottom: 6px; }
.form-group input { width: 100%; height: 44px; background: #FBFCFF; border: 1px solid var(--border); border-radius: var(--radius-input); padding: 0 14px; font-size: 14px; color: var(--text-primary); transition: border-color .2s, box-shadow .2s; }
.form-group input:focus { border-color: var(--primary); box-shadow: 0 0 0 3px rgba(58,108,159,.15); }
.form-group input.error { border-color: var(--danger); }
.form-group input.success { border-color: var(--success); }
.captcha-row { display: flex; gap: 10px; }
.captcha-row input { flex: 1; }
.captcha-btn { height: 44px; padding: 0 16px; background: var(--primary-light); color: var(--primary); font-weight: 600; font-size: 13px; border-radius: var(--radius-input); cursor: pointer; white-space: nowrap; transition: all .2s; }
.captcha-btn:hover { background: var(--primary); color: #fff; }
.form-meta { display: flex; justify-content: space-between; align-items: center; margin: 14px 0 18px; font-size: 13px; color: var(--text-secondary); }
.form-meta label { display: flex; align-items: center; gap: 6px; cursor: pointer; }
.form-meta input[type="checkbox"] { width: 16px; height: 16px; accent-color: var(--primary); }
.form-meta a { color: var(--primary); }
.form-register { text-align: center; font-size: 13px; color: var(--text-secondary); margin-top: 14px; }
.form-register a { color: var(--primary); font-weight: 500; }

/* Content cards */
.content-grid { display: grid; grid-template-columns: repeat(3, 1fr); gap: 24px; }
.content-card { background: var(--surface); border: 1px solid var(--border); border-radius: var(--radius-card); padding: 24px; box-shadow: var(--shadow-card); transition: transform .25s, box-shadow .25s; display: flex; flex-direction: column; }
.content-card:hover { transform: translateY(-4px); box-shadow: var(--shadow-hover); }
.card-tag { display: inline-block; align-self: flex-start; font-size: 12px; font-weight: 600; color: var(--primary); background: var(--primary-light); padding: 3px 12px; border-radius: var(--radius-tag); margin-bottom: 12px; }
.card-title { font-size: 16px; line-height: 1.5; font-weight: 600; margin-bottom: 8px; color: var(--text-primary); }
.card-title a { color: inherit; }
.card-title a:hover { color: var(--primary); }
.card-excerpt { font-size: 14px; line-height: 1.65; color: var(--text-secondary); flex: 1; display: -webkit-box; -webkit-line-clamp: 3; -webkit-box-orient: vertical; overflow: hidden; margin-bottom: 12px; }
.card-meta { display: flex; align-items: center; gap: 6px; font-size: 12px; color: var(--text-tertiary); }
.empty-state { grid-column: 1 / -1; text-align: center; padding: 48px 24px; background: var(--surface); border: 1px dashed var(--border); border-radius: var(--radius-card); color: var(--text-tertiary); }
.empty-state i { font-size: 32px; margin-bottom: 12px; display: block; }

/* FAQ */
.faq-wrap { max-width: 820px; margin: 0 auto; }
.faq-item { background: var(--surface); border: 1px solid var(--border); border-radius: var(--radius-card); margin-bottom: 12px; overflow: hidden; transition: border-color .2s, box-shadow .2s; }
.faq-item.open { border-color: var(--primary); box-shadow: var(--shadow-card); background: var(--primary-light); }
.faq-question { display: flex; align-items: center; justify-content: space-between; gap: 16px; padding: 20px 24px; cursor: pointer; font-size: 15px; font-weight: 600; color: var(--text-primary); }
.faq-question .faq-icon { flex-shrink: 0; width: 28px; height: 28px; border-radius: 50%; background: var(--primary-light); color: var(--primary); display: flex; align-items: center; justify-content: center; font-size: 13px; transition: transform .25s, background .25s, color .25s; }
.faq-item.open .faq-icon { transform: rotate(45deg); background: var(--primary); color: #fff; }
.faq-answer { max-height: 0; overflow: hidden; transition: max-height .3s ease; }
.faq-answer-inner { padding: 0 24px 20px; font-size: 14px; line-height: 1.75; color: var(--text-secondary); }

/* Footer */
.site-footer { background: #1E293B; color: #94A3B8; padding: 64px 0 0; }
.footer-grid { display: grid; grid-template-columns: 1.5fr 1fr 1fr 1.2fr; gap: 40px; padding-bottom: 40px; }
.footer-brand .logo { margin-bottom: 14px; }
.footer-brand .logo-icon { background: rgba(255,255,255,.12); color: #fff; }
.footer-brand .logo-text { color: #F1F5F9; }
.footer-brand p { font-size: 14px; line-height: 1.7; color: #94A3B8; margin-top: 12px; }
.footer-col h4 { font-size: 15px; font-weight: 600; color: #F1F5F9; margin-bottom: 14px; }
.footer-col ul li { margin-bottom: 8px; }
.footer-col ul a { font-size: 14px; color: #94A3B8; transition: color .2s; }
.footer-col ul a:hover { color: #fff; }
.footer-contact li { font-size: 14px; margin-bottom: 8px; display: flex; align-items: center; gap: 8px; }
.footer-contact i { width: 16px; color: var(--accent); }
.footer-bottom { border-top: 1px solid rgba(255,255,255,.08); padding: 20px 0; text-align: center; font-size: 13px; color: #64748B; }

/* Responsive */
@media (max-width: 1024px) {
  .container { padding: 0 16px; }
  .hero { padding: 120px 0 60px; }
  .hero-inner { grid-template-columns: 1fr; gap: 40px; }
  .login-panel { margin: 0 auto; }
  .feature-block, .feature-block.reverse { grid-template-columns: 1fr; gap: 24px; }
  .feature-block.reverse .feature-img { order: 0; }
  .cta-inner { grid-template-columns: 1fr; gap: 32px; }
  .login-form-card { max-width: 100%; }
  .content-grid { grid-template-columns: repeat(2, 1fr); }
  .footer-grid { grid-template-columns: 1fr 1fr; }
}
@media (max-width: 768px) {
  .section { padding: var(--section-space-mobile) 0; }
  .section-head h2 { font-size: 22px; }
  .main-nav, .cmd-search, .header-right .btn { display: none; }
  .menu-toggle { display: flex; }
  .hero h1 { font-size: 28px; }
  .hero-sub { font-size: 15px; }
  .trust-inner { grid-template-columns: repeat(2, 1fr); }
  .timeline-steps { grid-template-columns: 1fr; }
  .timeline-connector { display: none; }
  .content-grid { grid-template-columns: 1fr; }
  .compare-wrap { overflow-x: auto; }
  .compare-table { min-width: 640px; }
  .footer-grid { grid-template-columns: 1fr; gap: 28px; }
  .cta-copy h2 { font-size: 22px; }
  .btn { padding: 9px 18px; font-size: 14px; }
  .hero-actions { flex-direction: column; align-items: flex-start; }
  .hero-actions .btn { width: 100%; }
  .login-panel { padding: 20px; }
}
@media (max-width: 520px) {
  .trust-inner { grid-template-columns: 1fr 1fr; gap: 16px; }
  .trust-item { gap: 10px; }
  .trust-icon { width: 36px; height: 36px; font-size: 15px; }
  .trust-text strong { font-size: 14px; }
  .trust-text span { font-size: 12px; }
  .form-meta { flex-direction: column; align-items: flex-start; gap: 6px; }
}

/* roulang page: category1 */
:root {
  --bg-page: #F6F8FB;
  --surface: #FFFFFF;
  --primary: #3A6C9F;
  --primary-strong: #2E557D;
  --primary-light: #EAF0F6;
  --accent: #E09A3F;
  --accent-strong: #C97E28;
  --success: #2F9E6E;
  --danger: #D45664;
  --warning: #E6A23C;
  --info: #3A6C9F;
  --text-primary: #1C2A38;
  --text-secondary: #526579;
  --text-tertiary: #8B9AA8;
  --border: #E3EAF2;
  --shadow-card: 0 8px 24px rgba(28, 55, 90, 0.08);
  --shadow-hover: 0 12px 32px rgba(28, 55, 90, 0.14);
  --radius-card: 12px;
  --radius-btn: 8px;
  --radius-input: 10px;
  --radius-tag: 999px;
  --container-max: 1200px;
  --nav-height: 64px;
}

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

html {
  scroll-behavior: smooth;
}

body {
  font-family: -apple-system, BlinkMacSystemFont, "PingFang SC", "Hiragino Sans GB", "Microsoft YaHei", "Noto Sans CJK SC", sans-serif;
  font-size: 16px;
  line-height: 1.75;
  color: var(--text-primary);
  background: var(--bg-page);
  -webkit-font-smoothing: antialiased;
}

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

a {
  text-decoration: none;
  color: var(--primary);
  transition: color .2s ease;
}

button {
  font-family: inherit;
  border: none;
  background: none;
  cursor: pointer;
}

input {
  font-family: inherit;
}

ul,
ol {
  list-style: none;
}

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

/* ---------- Buttons ---------- */
.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 8px;
  padding: 12px 28px;
  border-radius: var(--radius-btn);
  font-size: 15px;
  font-weight: 600;
  line-height: 1;
  transition: background .2s ease, color .2s ease, transform .15s ease, box-shadow .2s ease;
  cursor: pointer;
}

.btn:focus-visible {
  outline: 2px solid rgba(58, 108, 159, 0.4);
  outline-offset: 2px;
}

.btn-accent {
  background: var(--accent);
  color: #FFFFFF;
  box-shadow: 0 4px 14px rgba(224, 154, 63, 0.3);
}

.btn-accent:hover {
  background: var(--accent-strong);
  color: #FFFFFF;
  transform: translateY(-1px);
  box-shadow: 0 6px 18px rgba(224, 154, 63, 0.35);
}

.btn-accent:active {
  transform: translateY(0);
}

.btn-outline {
  background: transparent;
  color: var(--primary);
  border: 1px solid var(--primary);
}

.btn-outline:hover {
  background: var(--primary-light);
  color: var(--primary-strong);
}

.btn-outline:active {
  background: rgba(58, 108, 159, 0.15);
}

.btn-white {
  background: #FFFFFF;
  color: var(--primary);
  box-shadow: 0 4px 16px rgba(0, 0, 0, 0.08);
}

.btn-white:hover {
  background: #F0F4F8;
  color: var(--primary-strong);
  transform: translateY(-1px);
}

.btn-sm {
  padding: 9px 18px;
  font-size: 14px;
}

/* ---------- Header ---------- */
.site-header {
  position: sticky;
  top: 0;
  z-index: 100;
  background: rgba(255, 255, 255, 0.9);
  backdrop-filter: blur(8px);
  -webkit-backdrop-filter: blur(8px);
  border-bottom: 1px solid var(--border);
}

.header-inner {
  display: flex;
  align-items: center;
  gap: 24px;
  height: var(--nav-height);
}

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

.logo-icon {
  width: 36px;
  height: 36px;
  border-radius: 9px;
  background: var(--primary);
  color: #FFFFFF;
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 16px;
  box-shadow: 0 4px 10px rgba(58, 108, 159, 0.25);
}

.logo-text {
  font-size: 17px;
  font-weight: 700;
  color: var(--text-primary);
  white-space: nowrap;
}

.main-nav {
  display: flex;
  align-items: center;
  gap: 4px;
  flex: 1;
  justify-content: center;
}

.nav-link {
  display: inline-flex;
  align-items: center;
  gap: 6px;
  padding: 8px 14px;
  border-radius: 8px;
  font-size: 15px;
  font-weight: 500;
  color: var(--text-secondary);
  transition: background .2s ease, color .2s ease;
  white-space: nowrap;
}

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

.nav-link.active {
  background: var(--primary-light);
  color: var(--primary);
  font-weight: 600;
}

.header-tools {
  display: flex;
  align-items: center;
  gap: 12px;
  flex-shrink: 0;
}

.command-search {
  display: flex;
  align-items: center;
  gap: 8px;
  width: 200px;
  height: 38px;
  padding: 0 10px;
  background: #FBFCFF;
  border: 1px solid var(--border);
  border-radius: 10px;
  transition: border-color .2s ease, box-shadow .2s ease;
}

.command-search:focus-within {
  border-color: var(--primary);
  box-shadow: 0 0 0 3px rgba(58, 108, 159, 0.12);
}

.command-search i {
  font-size: 14px;
  color: var(--text-tertiary);
}

.command-search input {
  flex: 1;
  border: none;
  outline: none;
  background: transparent;
  font-size: 13px;
  color: var(--text-primary);
  min-width: 0;
}

.command-search input::placeholder {
  color: var(--text-tertiary);
}

.search-kbd {
  flex-shrink: 0;
  font-size: 11px;
  color: var(--text-tertiary);
  background: var(--bg-page);
  border: 1px solid var(--border);
  border-radius: 5px;
  padding: 2px 6px;
  line-height: 1.6;
}

.menu-toggle {
  display: none;
  align-items: center;
  justify-content: center;
  width: 40px;
  height: 40px;
  border-radius: 8px;
  background: var(--primary-light);
  color: var(--primary);
  font-size: 17px;
  transition: background .2s ease, color .2s ease;
}

.menu-toggle:hover {
  background: var(--primary);
  color: #FFFFFF;
}

/* ---------- Hero ---------- */
.page-hero {
  position: relative;
  padding: 96px 0 84px;
  background:
    linear-gradient(135deg, rgba(246, 248, 251, 0.94) 0%, rgba(234, 240, 246, 0.88) 100%),
    url('/assets/images/backpic/back-1.png');
  background-size: cover;
  background-position: center;
  overflow: hidden;
}

.page-hero::after {
  content: '';
  position: absolute;
  top: 0;
  right: 0;
  width: 320px;
  height: 320px;
  background: radial-gradient(circle, rgba(58, 108, 159, 0.05) 0%, transparent 70%);
  pointer-events: none;
}

.hero-inner {
  position: relative;
  z-index: 1;
  text-align: center;
  max-width: 780px;
  margin: 0 auto;
}

.breadcrumb {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  padding: 6px 16px;
  background: rgba(255, 255, 255, 0.7);
  border: 1px solid var(--border);
  border-radius: var(--radius-tag);
  font-size: 13px;
  color: var(--text-tertiary);
  margin-bottom: 24px;
}

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

.breadcrumb a:hover {
  text-decoration: underline;
}

.breadcrumb i {
  font-size: 10px;
  color: var(--text-tertiary);
}

.hero-badge {
  display: inline-flex;
  align-items: center;
  gap: 6px;
  padding: 7px 18px;
  background: var(--primary-light);
  color: var(--primary);
  font-size: 13px;
  font-weight: 600;
  border-radius: var(--radius-tag);
  margin-bottom: 18px;
}

.page-hero h1 {
  font-size: 38px;
  line-height: 1.25;
  font-weight: 700;
  color: var(--text-primary);
  margin-bottom: 18px;
  letter-spacing: -0.5px;
}

.hero-desc {
  font-size: 17px;
  line-height: 1.8;
  color: var(--text-secondary);
  margin-bottom: 32px;
  max-width: 680px;
  margin-left: auto;
  margin-right: auto;
}

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

/* ---------- Section base ---------- */
.section {
  padding: 96px 0;
}

.section-head {
  text-align: center;
  max-width: 640px;
  margin: 0 auto 52px;
}

.section-tag {
  display: inline-flex;
  align-items: center;
  gap: 6px;
  padding: 6px 16px;
  background: var(--primary-light);
  color: var(--primary);
  font-size: 13px;
  font-weight: 600;
  border-radius: var(--radius-tag);
  margin-bottom: 14px;
}

.section-head h2 {
  font-size: 30px;
  line-height: 1.3;
  font-weight: 700;
  color: var(--text-primary);
  margin: 0 0 14px;
  letter-spacing: -0.3px;
}

.section-head p {
  font-size: 16px;
  line-height: 1.75;
  color: var(--text-secondary);
}

/* ---------- Timeline ---------- */
.section-timeline {
  background: var(--surface);
  border-bottom: 1px solid var(--border);
}

.timeline {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 32px;
  position: relative;
  max-width: 960px;
  margin: 0 auto;
}

.timeline::before {
  content: '';
  position: absolute;
  top: 44px;
  left: 15%;
  right: 15%;
  height: 2px;
  border-top: 2px dashed var(--border);
  z-index: 0;
}

.timeline-item {
  position: relative;
  z-index: 1;
  text-align: center;
  padding: 0 12px;
}

.timeline-node {
  width: 88px;
  height: 88px;
  margin: 0 auto 24px;
  border-radius: 50%;
  background: var(--surface);
  border: 2px solid var(--primary);
  box-shadow: var(--shadow-card);
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 26px;
  color: var(--primary);
  transition: transform .25s ease, box-shadow .25s ease, background .25s ease;
}

.timeline-item:hover .timeline-node {
  transform: translateY(-4px);
  background: var(--primary-light);
  box-shadow: var(--shadow-hover);
}

.timeline-item h3 {
  font-size: 18px;
  font-weight: 600;
  color: var(--text-primary);
  margin-bottom: 10px;
}

.timeline-item p {
  font-size: 14px;
  line-height: 1.7;
  color: var(--text-secondary);
}

/* ---------- Issue cards ---------- */
.section-issues {
  background: var(--bg-page);
}

.issue-list {
  display: flex;
  flex-direction: column;
  gap: 32px;
  max-width: 1040px;
  margin: 0 auto;
}

.issue-card {
  display: flex;
  align-items: center;
  gap: 48px;
  background: var(--surface);
  border: 1px solid var(--border);
  border-radius: var(--radius-card);
  padding: 32px;
  box-shadow: var(--shadow-card);
  transition: box-shadow .3s ease, transform .3s ease;
}

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

.issue-card:nth-child(even) {
  flex-direction: row-reverse;
}

.issue-media {
  flex: 0 0 360px;
  border-radius: 12px;
  overflow: hidden;
  aspect-ratio: 4 / 3;
}

.issue-media img {
  width: 100%;
  height: 100%;
  object-fit: cover;
  transition: transform .4s ease;
}

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

.issue-body {
  flex: 1;
}

.issue-body h3 {
  font-size: 20px;
  font-weight: 700;
  color: var(--text-primary);
  margin-bottom: 12px;
}

.issue-body p {
  font-size: 15px;
  line-height: 1.75;
  color: var(--text-secondary);
  margin-bottom: 18px;
}

.issue-body ul {
  display: flex;
  flex-direction: column;
  gap: 8px;
}

.issue-body ul li {
  display: flex;
  align-items: center;
  gap: 10px;
  font-size: 14px;
  color: var(--text-secondary);
}

.issue-body ul li i {
  color: var(--success);
  font-size: 13px;
}

/* ---------- Tips ---------- */
.section-tips {
  background: var(--surface);
  border-bottom: 1px solid var(--border);
}

.tips-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 24px;
  max-width: 1040px;
  margin: 0 auto;
}

.tip-card {
  display: flex;
  gap: 16px;
  padding: 28px;
  border-radius: var(--radius-card);
  border: 1px solid var(--border);
  background: var(--surface);
  box-shadow: var(--shadow-card);
  transition: box-shadow .25s ease, transform .25s ease;
}

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

.tip-icon {
  flex-shrink: 0;
  width: 44px;
  height: 44px;
  border-radius: 10px;
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 18px;
}

.tip-info .tip-icon {
  background: #EBF3FB;
  color: var(--info);
}

.tip-warning .tip-icon {
  background: #FDF4E5;
  color: var(--warning);
}

.tip-danger .tip-icon {
  background: #FCEAEC;
  color: var(--danger);
}

.tip-card h3 {
  font-size: 16px;
  font-weight: 700;
  color: var(--text-primary);
  margin-bottom: 8px;
}

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

/* ---------- FAQ ---------- */
.section-faq {
  background: var(--bg-page);
}

.faq-list {
  max-width: 800px;
  margin: 0 auto;
  display: flex;
  flex-direction: column;
  gap: 16px;
}

.faq-item {
  background: var(--surface);
  border: 1px solid var(--border);
  border-radius: var(--radius-card);
  padding: 0 24px;
  transition: border-color .25s ease, background .25s ease, box-shadow .25s ease;
}

.faq-item.active {
  background: var(--primary-light);
  border-color: var(--primary);
  box-shadow: var(--shadow-card);
}

.faq-question {
  width: 100%;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 16px;
  padding: 20px 0;
  font-size: 16px;
  font-weight: 600;
  color: var(--text-primary);
  text-align: left;
  transition: color .2s ease;
}

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

.faq-question i {
  flex-shrink: 0;
  font-size: 14px;
  color: var(--text-tertiary);
  transition: transform .3s ease;
}

.faq-item.active .faq-question i {
  transform: rotate(180deg);
  color: var(--primary);
}

.faq-answer {
  max-height: 0;
  overflow: hidden;
  transition: max-height .3s ease;
}

.faq-item.active .faq-answer {
  max-height: 500px;
}

.faq-answer p {
  padding: 0 0 20px;
  font-size: 15px;
  line-height: 1.8;
  color: var(--text-secondary);
}

.faq-item.active .faq-answer p {
  color: var(--text-primary);
}

/* ---------- CTA ---------- */
.section-cta {
  background: var(--surface);
}

.cta-banner {
  position: relative;
  background: var(--primary);
  border-radius: 16px;
  padding: 64px 48px;
  text-align: center;
  overflow: hidden;
}

.cta-banner::before {
  content: '';
  position: absolute;
  top: -60px;
  right: -60px;
  width: 220px;
  height: 220px;
  background: rgba(255, 255, 255, 0.06);
  border-radius: 50%;
}

.cta-banner::after {
  content: '';
  position: absolute;
  bottom: -80px;
  left: -40px;
  width: 180px;
  height: 180px;
  background: rgba(255, 255, 255, 0.04);
  border-radius: 50%;
}

.cta-banner h2 {
  position: relative;
  z-index: 1;
  font-size: 30px;
  font-weight: 700;
  color: #FFFFFF;
  margin-bottom: 14px;
}

.cta-banner p {
  position: relative;
  z-index: 1;
  font-size: 16px;
  color: rgba(255, 255, 255, 0.85);
  margin-bottom: 28px;
}

.cta-banner .btn {
  position: relative;
  z-index: 1;
}

/* ---------- Footer ---------- */
.site-footer {
  background: #FFFFFF;
  border-top: 1px solid var(--border);
  padding: 64px 0 28px;
}

.footer-grid {
  display: grid;
  grid-template-columns: 1.6fr 1fr 1fr 1fr;
  gap: 48px;
  margin-bottom: 44px;
}

.footer-brand .logo {
  margin-bottom: 16px;
}

.footer-brand p {
  font-size: 14px;
  line-height: 1.75;
  color: var(--text-secondary);
  max-width: 320px;
}

.footer-col h4 {
  font-size: 15px;
  font-weight: 700;
  color: var(--text-primary);
  margin-bottom: 18px;
}

.footer-col ul {
  display: flex;
  flex-direction: column;
  gap: 10px;
}

.footer-col ul li a {
  font-size: 14px;
  color: var(--text-secondary);
  transition: color .2s ease;
}

.footer-col ul li a:hover {
  color: var(--primary);
}

.footer-contact li {
  display: flex;
  align-items: center;
  gap: 10px;
  font-size: 14px;
  color: var(--text-secondary);
}

.footer-contact li i {
  color: var(--primary);
  font-size: 13px;
  width: 18px;
}

.footer-bottom {
  border-top: 1px solid var(--border);
  padding-top: 24px;
  text-align: center;
}

.footer-bottom p {
  font-size: 13px;
  color: var(--text-tertiary);
}

/* ---------- Responsive ---------- */
@media (max-width: 1024px) {
  .container {
    padding: 0 16px;
  }

  .header-inner {
    gap: 16px;
  }

  .main-nav {
    gap: 2px;
  }

  .nav-link {
    padding: 8px 10px;
    font-size: 14px;
  }

  .command-search {
    width: 160px;
  }

  .page-hero {
    padding: 72px 0 64px;
  }

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

  .section {
    padding: 64px 0;
  }

  .issue-card {
    gap: 28px;
    padding: 24px;
  }

  .issue-media {
    flex-basis: 300px;
  }

  .tips-grid {
    grid-template-columns: 1fr;
    max-width: 640px;
  }

  .footer-grid {
    grid-template-columns: 1fr 1fr;
    gap: 32px;
  }
}

@media (max-width: 768px) {
  .site-header {
    position: sticky;
  }

  .header-inner {
    gap: 12px;
  }

  .main-nav,
  .header-tools .command-search,
  .header-tools .btn {
    display: none;
  }

  .menu-toggle {
    display: inline-flex;
  }

  .main-nav.open {
    display: flex;
    flex-direction: column;
    align-items: flex-start;
    position: absolute;
    top: var(--nav-height);
    left: 0;
    right: 0;
    background: #FFFFFF;
    border-bottom: 1px solid var(--border);
    padding: 16px;
    gap: 8px;
    box-shadow: var(--shadow-card);
    z-index: 200;
  }

  .main-nav.open .nav-link {
    width: 100%;
    padding: 12px 14px;
    font-size: 15px;
  }

  .page-hero {
    padding: 56px 0 48px;
  }

  .page-hero h1 {
    font-size: 28px;
  }

  .hero-desc {
    font-size: 15px;
  }

  .hero-actions {
    flex-direction: column;
    align-items: center;
  }

  .hero-actions .btn {
    width: 100%;
    max-width: 280px;
  }

  .section-head h2 {
    font-size: 24px;
  }

  .timeline {
    grid-template-columns: 1fr;
    gap: 32px;
    max-width: 400px;
  }

  .timeline::before {
    display: none;
  }

  .timeline-item {
    display: flex;
    align-items: flex-start;
    text-align: left;
    padding: 0;
  }

  .timeline-node {
    width: 64px;
    height: 64px;
    font-size: 20px;
    margin: 0 20px 0 0;
    flex-shrink: 0;
  }

  .timeline-item h3 {
    font-size: 17px;
    margin-bottom: 6px;
  }

  .timeline-item p {
    font-size: 14px;
  }

  .issue-card,
  .issue-card:nth-child(even) {
    flex-direction: column;
    gap: 20px;
  }

  .issue-media {
    flex-basis: auto;
    width: 100%;
    aspect-ratio: 16 / 9;
  }

  .cta-banner {
    padding: 48px 24px;
  }

  .cta-banner h2 {
    font-size: 24px;
  }

  .footer-grid {
    grid-template-columns: 1fr;
    gap: 28px;
  }

  .footer-bottom p {
    line-height: 1.6;
  }
}

@media (max-width: 520px) {
  .logo-text {
    font-size: 15px;
  }

  .logo-icon {
    width: 32px;
    height: 32px;
    font-size: 14px;
  }

  .page-hero h1 {
    font-size: 24px;
  }

  .breadcrumb {
    font-size: 12px;
    padding: 5px 12px;
  }

  .section-tag {
    font-size: 12px;
    padding: 5px 12px;
  }

  .tip-card {
    padding: 20px;
  }
}

/* roulang page: article */
:root {
  --bg-page: #F6F8FB;
  --surface: #FFFFFF;
  --primary: #3A6C9F;
  --primary-strong: #2E557D;
  --primary-light: #EAF0F6;
  --accent: #E09A3F;
  --accent-strong: #C97E28;
  --success: #2F9E6E;
  --danger: #D45664;
  --warning: #E6A23C;
  --text-primary: #1C2A38;
  --text-secondary: #526579;
  --text-tertiary: #8B9AA8;
  --border: #E3EAF2;
  --shadow-card: 0 8px 24px rgba(28, 55, 90, 0.08);
  --shadow-hover: 0 12px 32px rgba(28, 55, 90, 0.14);
  --radius-card: 12px;
  --radius-btn: 8px;
  --radius-input: 10px;
  --radius-tag: 999px;
  --font-sans: -apple-system, BlinkMacSystemFont, "PingFang SC", "Hiragino Sans GB", "Microsoft YaHei", "Noto Sans CJK SC", sans-serif;
  --font-mono: "SFMono-Regular", Consolas, "Liberation Mono", Menlo, monospace;
}
* {
  box-sizing: border-box;
  margin: 0;
  padding: 0;
}
html {
  scroll-behavior: smooth;
  -webkit-text-size-adjust: 100%;
}
body {
  font-family: var(--font-sans);
  font-size: 16px;
  line-height: 1.75;
  color: var(--text-primary);
  background: var(--bg-page);
  -webkit-font-smoothing: antialiased;
  -moz-osx-font-smoothing: grayscale;
}
img {
  max-width: 100%;
  height: auto;
  display: block;
}
a {
  color: var(--primary);
  text-decoration: none;
  transition: color 0.2s ease;
}
a:hover {
  color: var(--primary-strong);
}
a:focus-visible {
  outline: 2px solid rgba(58, 108, 159, 0.4);
  outline-offset: 2px;
}
button {
  font-family: inherit;
  cursor: pointer;
}
input {
  font-family: inherit;
}
.container {
  max-width: 1200px;
  margin: 0 auto;
  padding-left: 24px;
  padding-right: 24px;
}
.site-header {
  position: fixed;
  top: 0;
  left: 0;
  right: 0;
  z-index: 1000;
  height: 64px;
  background: rgba(255, 255, 255, 0.9);
  backdrop-filter: blur(8px);
  -webkit-backdrop-filter: blur(8px);
  border-bottom: 1px solid var(--border);
}
.header-inner {
  display: flex;
  align-items: center;
  justify-content: space-between;
  height: 64px;
  gap: 16px;
}
.logo {
  display: flex;
  align-items: center;
  gap: 10px;
  flex-shrink: 0;
}
.logo-icon {
  width: 36px;
  height: 36px;
  display: flex;
  align-items: center;
  justify-content: center;
  background: var(--primary-light);
  border-radius: 10px;
  color: var(--primary);
  font-size: 17px;
  border: 1px solid rgba(58, 108, 159, 0.2);
}
.logo-text {
  font-size: 18px;
  font-weight: 700;
  color: var(--text-primary);
  letter-spacing: 0.5px;
  white-space: nowrap;
}
.main-nav {
  display: flex;
  align-items: center;
  gap: 4px;
  margin: 0 auto;
}
.nav-link {
  position: relative;
  padding: 8px 14px;
  border-radius: 8px;
  font-size: 14px;
  font-weight: 500;
  color: var(--text-secondary);
  transition: all 0.2s ease;
}
.nav-link:hover,
.nav-link.active {
  color: var(--primary);
  background: var(--primary-light);
}
.nav-link.active::after {
  content: "";
  position: absolute;
  left: 14px;
  right: 14px;
  bottom: 3px;
  height: 2px;
  background: var(--accent);
  border-radius: 2px;
}
.header-actions {
  display: flex;
  align-items: center;
  gap: 12px;
  flex-shrink: 0;
}
.search-box {
  position: relative;
  display: flex;
  align-items: center;
  width: 200px;
  height: 38px;
  background: #FBFCFF;
  border: 1px solid var(--border);
  border-radius: 10px;
  padding: 0 12px;
  transition: all 0.2s ease;
}
.search-box:focus-within {
  border-color: var(--primary);
  box-shadow: 0 0 0 3px rgba(58, 108, 159, 0.12);
}
.search-box i {
  color: var(--text-tertiary);
  font-size: 14px;
  margin-right: 8px;
}
.search-box input {
  flex: 1;
  border: none;
  outline: none;
  background: transparent;
  font-size: 13px;
  color: var(--text-primary);
  caret-color: var(--primary);
}
.search-box input::placeholder {
  color: var(--text-tertiary);
}
.kbd {
  font-size: 11px;
  color: var(--text-tertiary);
  background: var(--primary-light);
  border-radius: 4px;
  padding: 2px 6px;
  font-family: var(--font-mono);
  white-space: nowrap;
}
.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 8px;
  height: 42px;
  padding: 0 20px;
  border-radius: var(--radius-btn);
  font-size: 14px;
  font-weight: 600;
  border: 1px solid transparent;
  transition: all 0.2s ease;
  white-space: nowrap;
  text-decoration: none;
}
.btn:focus-visible {
  outline: 2px solid rgba(58, 108, 159, 0.4);
  outline-offset: 2px;
}
.btn-primary {
  background: var(--primary);
  color: #fff;
}
.btn-primary:hover {
  background: var(--primary-strong);
  color: #fff;
}
.btn-primary:active {
  transform: translateY(1px);
}
.btn-accent {
  background: var(--accent);
  color: #fff;
}
.btn-accent:hover {
  background: var(--accent-strong);
  color: #fff;
}
.btn-accent:active {
  transform: translateY(1px);
}
.btn-secondary {
  background: transparent;
  border-color: var(--primary);
  color: var(--primary);
}
.btn-secondary:hover {
  background: var(--primary-light);
  color: var(--primary-strong);
}
.btn-sm {
  height: 36px;
  padding: 0 16px;
  font-size: 13px;
}
.menu-toggle {
  display: none;
  width: 40px;
  height: 40px;
  align-items: center;
  justify-content: center;
  background: transparent;
  border: 1px solid var(--border);
  border-radius: 10px;
  font-size: 18px;
  color: var(--text-primary);
  transition: all 0.2s ease;
}
.menu-toggle:hover {
  background: var(--primary-light);
  border-color: var(--primary);
  color: var(--primary);
}
.page-main {
  padding-top: 64px;
}
.article-hero {
  position: relative;
  background-color: var(--primary-strong);
  color: #fff;
  padding: 56px 0 48px;
  overflow: hidden;
}
.article-hero::before {
  content: "";
  position: absolute;
  inset: 0;
  background-image: url('/assets/images/backpic/back-1.png');
  background-size: cover;
  background-position: center;
  opacity: 0.12;
  pointer-events: none;
}
.article-hero::after {
  content: "";
  position: absolute;
  bottom: 0;
  left: 0;
  width: 100%;
  height: 3px;
  background: var(--accent);
}
.article-hero .container {
  position: relative;
  z-index: 1;
}
.breadcrumb {
  display: flex;
  align-items: center;
  flex-wrap: wrap;
  gap: 6px;
  font-size: 13px;
  margin-bottom: 20px;
  color: rgba(255, 255, 255, 0.7);
}
.breadcrumb a {
  color: rgba(255, 255, 255, 0.85);
  padding: 4px 8px;
  border-radius: 6px;
  background: rgba(255, 255, 255, 0.1);
  transition: all 0.2s ease;
}
.breadcrumb a:hover {
  background: rgba(255, 255, 255, 0.2);
  color: #fff;
}
.breadcrumb .sep {
  color: rgba(255, 255, 255, 0.4);
}
.breadcrumb .current {
  padding: 4px 8px;
  background: rgba(255, 255, 255, 0.08);
  border-radius: 6px;
}
.article-h1 {
  font-size: 38px;
  line-height: 1.25;
  font-weight: 700;
  letter-spacing: 0.5px;
  margin-bottom: 16px;
  max-width: 800px;
  color: #fff;
}
.article-meta {
  display: flex;
  align-items: center;
  flex-wrap: wrap;
  gap: 18px;
  font-size: 14px;
  color: rgba(255, 255, 255, 0.75);
}
.meta-item {
  display: inline-flex;
  align-items: center;
  gap: 6px;
}
.meta-item i {
  font-size: 13px;
  opacity: 0.85;
}
.article-badge {
  display: inline-flex;
  align-items: center;
  gap: 6px;
  background: rgba(224, 154, 63, 0.25);
  border: 1px solid rgba(224, 154, 63, 0.4);
  color: #f7cba0;
  padding: 4px 14px;
  border-radius: var(--radius-tag);
  font-size: 13px;
  font-weight: 600;
}
.article-section {
  padding: 56px 0 24px;
}
.article-layout {
  max-width: 860px;
  margin: 0 auto;
}
.article-body {
  background: var(--surface);
  border-radius: var(--radius-card);
  box-shadow: var(--shadow-card);
  padding: 48px;
  font-size: 16px;
  line-height: 1.85;
  color: var(--text-primary);
}
.article-body h2 {
  font-size: 26px;
  font-weight: 700;
  line-height: 1.35;
  margin: 36px 0 16px;
  padding-bottom: 12px;
  border-bottom: 1px solid var(--border);
  color: var(--text-primary);
}
.article-body h3 {
  font-size: 21px;
  font-weight: 700;
  line-height: 1.4;
  margin: 28px 0 12px;
  color: var(--text-primary);
}
.article-body h4 {
  font-size: 18px;
  font-weight: 700;
  margin: 20px 0 10px;
  color: var(--text-primary);
}
.article-body p {
  margin-bottom: 20px;
  color: var(--text-secondary);
}
.article-body a {
  color: var(--primary);
  text-decoration: underline;
  text-decoration-color: rgba(58, 108, 159, 0.3);
  text-underline-offset: 4px;
  transition: all 0.2s ease;
}
.article-body a:hover {
  text-decoration-color: var(--primary);
  color: var(--primary-strong);
}
.article-body img {
  width: 100%;
  border-radius: 12px;
  margin: 28px 0 12px;
  box-shadow: var(--shadow-card);
}
.article-body figure {
  margin: 28px 0;
}
.article-body figure img {
  margin: 0 0 8px;
}
.article-body figcaption {
  font-size: 13px;
  color: var(--text-tertiary);
  text-align: center;
  padding-top: 8px;
}
.article-body blockquote {
  border-left: 3px solid var(--primary);
  background: var(--primary-light);
  padding: 18px 24px;
  border-radius: 0 10px 10px 0;
  margin: 24px 0;
  color: var(--text-secondary);
  font-style: normal;
}
.article-body blockquote p {
  margin-bottom: 8px;
}
.article-body blockquote p:last-child {
  margin-bottom: 0;
}
.article-body ul,
.article-body ol {
  margin: 20px 0 24px;
  padding-left: 24px;
  color: var(--text-secondary);
}
.article-body ul li,
.article-body ol li {
  margin-bottom: 8px;
  padding-left: 4px;
}
.article-body ul li::marker {
  color: var(--primary);
}
.article-body table {
  width: 100%;
  border-collapse: collapse;
  margin: 24px 0;
  font-size: 14px;
  border-radius: 10px;
  overflow: hidden;
  border: 1px solid var(--border);
}
.article-body table th {
  background: var(--primary-light);
  font-weight: 700;
  text-align: left;
  padding: 14px 16px;
  color: var(--text-primary);
  border-bottom: 1px solid var(--border);
}
.article-body table td {
  padding: 12px 16px;
  border-bottom: 1px solid var(--border);
  color: var(--text-secondary);
}
.article-body table tr:last-child td {
  border-bottom: none;
}
.article-body table tr:hover td {
  background: #F9FBFD;
}
.article-body pre {
  background: #F0F3F7;
  padding: 20px;
  border-radius: 10px;
  overflow-x: auto;
  font-family: var(--font-mono);
  font-size: 14px;
  line-height: 1.7;
  margin: 24px 0;
  border: 1px solid var(--border);
}
.article-body code {
  font-family: var(--font-mono);
  font-size: 14px;
  background: #F0F3F7;
  padding: 2px 6px;
  border-radius: 4px;
  color: var(--primary-strong);
}
.article-body pre code {
  background: transparent;
  padding: 0;
  border-radius: 0;
  color: var(--text-primary);
  white-space: pre;
}
.article-body hr {
  border: none;
  border-top: 1px solid var(--border);
  margin: 32px 0;
}
.article-help {
  margin-top: 40px;
  padding: 20px 24px;
  background: var(--primary-light);
  border-radius: 12px;
  display: flex;
  align-items: center;
  justify-content: space-between;
  flex-wrap: wrap;
  gap: 12px;
  border: 1px solid rgba(58, 108, 159, 0.15);
}
.article-help p {
  font-size: 15px;
  font-weight: 600;
  color: var(--text-primary);
  margin: 0;
  display: flex;
  align-items: center;
  gap: 10px;
}
.article-help p i {
  color: var(--primary);
  font-size: 20px;
}
.article-help a {
  font-size: 14px;
  font-weight: 600;
  color: var(--primary);
  text-decoration: none;
  display: inline-flex;
  align-items: center;
  gap: 6px;
  padding: 8px 16px;
  background: #fff;
  border-radius: 8px;
  box-shadow: 0 2px 8px rgba(28, 55, 90, 0.06);
  transition: all 0.2s ease;
}
.article-help a:hover {
  background: var(--primary);
  color: #fff;
  transform: translateY(-1px);
}
.related-section {
  padding: 56px 0 64px;
}
.related-head {
  display: flex;
  align-items: center;
  justify-content: space-between;
  margin-bottom: 32px;
}
.related-head h2 {
  font-size: 28px;
  font-weight: 700;
  color: var(--text-primary);
  position: relative;
  padding-left: 18px;
}
.related-head h2::before {
  content: "";
  position: absolute;
  left: 0;
  top: 6px;
  bottom: 6px;
  width: 4px;
  background: var(--accent);
  border-radius: 4px;
}
.related-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 24px;
}
.related-card {
  display: flex;
  flex-direction: column;
  background: var(--surface);
  border-radius: var(--radius-card);
  overflow: hidden;
  border: 1px solid var(--border);
  box-shadow: var(--shadow-card);
  transition: all 0.28s ease;
  text-decoration: none;
  color: var(--text-primary);
}
.related-card:hover {
  transform: translateY(-4px);
  box-shadow: var(--shadow-hover);
  color: var(--text-primary);
}
.related-cover {
  height: 170px;
  overflow: hidden;
  background: var(--primary-light);
}
.related-cover img {
  width: 100%;
  height: 100%;
  object-fit: cover;
  transition: transform 0.4s ease;
}
.related-card:hover .related-cover img {
  transform: scale(1.04);
}
.related-body {
  padding: 20px;
  flex: 1;
  display: flex;
  flex-direction: column;
  gap: 10px;
}
.related-tag {
  display: inline-flex;
  align-self: flex-start;
  align-items: center;
  gap: 6px;
  background: var(--primary-light);
  color: var(--primary);
  font-size: 12px;
  font-weight: 600;
  padding: 3px 10px;
  border-radius: var(--radius-tag);
}
.related-title {
  font-size: 17px;
  font-weight: 700;
  line-height: 1.45;
  color: var(--text-primary);
  transition: color 0.2s ease;
  display: -webkit-box;
  -webkit-line-clamp: 2;
  -webkit-box-orient: vertical;
  overflow: hidden;
}
.related-card:hover .related-title {
  color: var(--primary);
}
.related-summary {
  font-size: 14px;
  line-height: 1.6;
  color: var(--text-secondary);
  display: -webkit-box;
  -webkit-line-clamp: 3;
  -webkit-box-orient: vertical;
  overflow: hidden;
  margin-top: auto;
}
.related-meta {
  font-size: 13px;
  color: var(--text-tertiary);
  display: flex;
  align-items: center;
  gap: 6px;
  margin-top: 4px;
}
.back-section {
  padding: 0 0 80px;
}
.back-actions {
  display: flex;
  align-items: center;
  justify-content: center;
  gap: 16px;
  flex-wrap: wrap;
}
.not-found-wrap {
  padding: 120px 24px;
}
.not-found {
  max-width: 520px;
  margin: 0 auto;
  text-align: center;
  background: var(--surface);
  border-radius: 16px;
  padding: 56px 48px;
  box-shadow: var(--shadow-card);
  border: 1px solid var(--border);
}
.not-found i {
  font-size: 56px;
  color: var(--primary-light);
  margin-bottom: 20px;
}
.not-found h2 {
  font-size: 28px;
  font-weight: 700;
  margin-bottom: 12px;
  color: var(--text-primary);
}
.not-found p {
  font-size: 15px;
  color: var(--text-secondary);
  margin-bottom: 28px;
}
.site-footer {
  background: var(--surface);
  border-top: 1px solid var(--border);
  padding: 64px 0 0;
}
.footer-grid {
  display: grid;
  grid-template-columns: 2fr 1fr 1fr 1.2fr;
  gap: 40px;
  padding-bottom: 48px;
  border-bottom: 1px solid var(--border);
}
.footer-brand .logo {
  margin-bottom: 16px;
}
.footer-brand p {
  font-size: 14px;
  color: var(--text-secondary);
  line-height: 1.7;
  max-width: 300px;
}
.footer-col h4 {
  font-size: 16px;
  font-weight: 700;
  color: var(--text-primary);
  margin-bottom: 16px;
}
.footer-col ul {
  list-style: none;
  display: flex;
  flex-direction: column;
  gap: 10px;
}
.footer-col ul a {
  font-size: 14px;
  color: var(--text-secondary);
  transition: all 0.2s ease;
  display: inline-flex;
  align-items: center;
  gap: 6px;
}
.footer-col ul a:hover {
  color: var(--primary);
  transform: translateX(3px);
}
.footer-contact li {
  font-size: 14px;
  color: var(--text-secondary);
  display: flex;
  align-items: center;
  gap: 8px;
}
.footer-contact i {
  color: var(--primary);
  width: 16px;
  text-align: center;
}
.footer-bottom {
  padding: 24px 0;
  display: flex;
  align-items: center;
  justify-content: space-between;
  flex-wrap: wrap;
  gap: 8px;
}
.footer-bottom p {
  font-size: 13px;
  color: var(--text-tertiary);
}
@media (max-width: 1024px) {
  .container {
    padding-left: 16px;
    padding-right: 16px;
  }
  .main-nav {
    gap: 2px;
  }
  .nav-link {
    padding: 8px 10px;
    font-size: 13px;
  }
  .search-box {
    width: 160px;
  }
  .article-hero {
    padding: 44px 0 40px;
  }
  .article-h1 {
    font-size: 32px;
  }
  .article-body {
    padding: 32px;
  }
  .related-grid {
    grid-template-columns: repeat(2, 1fr);
  }
  .footer-grid {
    grid-template-columns: 1fr 1fr;
    gap: 32px;
  }
}
@media (max-width: 768px) {
  .site-header {
    height: 60px;
  }
  .header-inner {
    height: 60px;
  }
  .main-nav {
    display: none;
    position: absolute;
    top: 60px;
    left: 0;
    right: 0;
    background: var(--surface);
    flex-direction: column;
    align-items: stretch;
    padding: 16px;
    border-bottom: 1px solid var(--border);
    box-shadow: var(--shadow-card);
    gap: 4px;
    z-index: 999;
  }
  .main-nav.open {
    display: flex;
  }
  .nav-link {
    padding: 12px 16px;
    font-size: 15px;
    border-radius: 10px;
  }
  .nav-link.active::after {
    display: none;
  }
  .search-box {
    display: none;
  }
  .header-actions .btn-sm {
    display: none;
  }
  .menu-toggle {
    display: flex;
  }
  .page-main {
    padding-top: 60px;
  }
  .article-hero {
    padding: 36px 0 36px;
  }
  .article-h1 {
    font-size: 28px;
  }
  .article-meta {
    gap: 10px;
    font-size: 13px;
  }
  .article-section {
    padding: 40px 0 16px;
  }
  .article-body {
    padding: 24px 20px;
    border-radius: 10px;
  }
  .article-body h2 {
    font-size: 22px;
  }
  .article-body h3 {
    font-size: 19px;
  }
  .related-section {
    padding: 40px 0 48px;
  }
  .related-head h2 {
    font-size: 24px;
  }
  .related-grid {
    grid-template-columns: 1fr;
    gap: 16px;
  }
  .related-cover {
    height: 160px;
  }
  .back-section {
    padding-bottom: 56px;
  }
  .footer-grid {
    grid-template-columns: 1fr;
    gap: 32px;
    padding-bottom: 32px;
  }
  .footer-brand p {
    max-width: 100%;
  }
  .footer-bottom {
    flex-direction: column;
    text-align: center;
  }
  .not-found {
    padding: 40px 24px;
  }
  .not-found i {
    font-size: 44px;
  }
  .not-found h2 {
    font-size: 24px;
  }
}
@media (max-width: 520px) {
  .logo-text {
    font-size: 16px;
  }
  .logo-icon {
    width: 32px;
    height: 32px;
    font-size: 15px;
  }
  .article-meta .meta-item:nth-child(3) {
    display: none;
  }
  .article-body {
    padding: 20px 16px;
    font-size: 15px;
  }
  .article-help {
    flex-direction: column;
    align-items: flex-start;
  }
  .related-grid {
    grid-template-columns: 1fr;
  }
  .footer-grid {
    grid-template-columns: 1fr;
  }
  .btn {
    height: 40px;
    padding: 0 16px;
    font-size: 13px;
  }
}

/* roulang page: category2 */
:root {
            --bg-page: #F6F8FB;
            --surface: #FFFFFF;
            --primary: #3A6C9F;
            --primary-strong: #2E557D;
            --primary-light: #EAF0F6;
            --accent: #E09A3F;
            --accent-strong: #C97E28;
            --success: #2F9E6E;
            --danger: #D45664;
            --warning: #E6A23C;
            --text-primary: #1C2A38;
            --text-secondary: #526579;
            --text-tertiary: #8B9AA8;
            --border: #E3EAF2;
            --shadow-card: 0 8px 24px rgba(28, 55, 90, 0.08);
            --shadow-hover: 0 12px 32px rgba(28, 55, 90, 0.14);
            --radius-card: 12px;
            --radius-btn: 8px;
            --radius-input: 10px;
            --radius-tag: 999px;
            --container-width: 1200px;
            --header-height: 64px;
            --transition: all 0.3s ease;
        }

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

        html {
            scroll-behavior: smooth;
        }

        body {
            font-family: -apple-system, BlinkMacSystemFont, "PingFang SC", "Hiragino Sans GB", "Microsoft YaHei", "Noto Sans CJK SC", sans-serif;
            font-size: 16px;
            line-height: 1.75;
            color: var(--text-primary);
            background: var(--bg-page);
            -webkit-font-smoothing: antialiased;
        }

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

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

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

        ul,
        ol {
            list-style: none;
        }

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

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

        .btn {
            display: inline-flex;
            align-items: center;
            justify-content: center;
            gap: 8px;
            padding: 12px 28px;
            border-radius: var(--radius-btn);
            font-weight: 600;
            font-size: 15px;
            line-height: 1;
            cursor: pointer;
            transition: var(--transition);
            border: 1px solid transparent;
            white-space: nowrap;
        }

        .btn:focus-visible {
            outline: 2px solid rgba(58, 108, 159, 0.4);
            outline-offset: 2px;
        }

        .btn-accent {
            background: var(--accent);
            color: #fff;
            border-color: var(--accent);
        }

        .btn-accent:hover {
            background: var(--accent-strong);
            border-color: var(--accent-strong);
            color: #fff;
            transform: translateY(-1px);
            box-shadow: 0 6px 16px rgba(224, 154, 63, 0.25);
        }

        .btn-accent:active {
            transform: translateY(1px);
            box-shadow: none;
        }

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

        .btn-outline:hover {
            background: var(--primary-light);
            border-color: var(--primary-strong);
            color: var(--primary-strong);
        }

        .btn-outline:active {
            background: #dbe6f0;
        }

        .btn-white {
            background: #fff;
            color: var(--primary);
            border-color: #fff;
        }

        .btn-white:hover {
            background: #F0F4F8;
            border-color: #F0F4F8;
            color: var(--primary-strong);
            transform: translateY(-1px);
            box-shadow: 0 8px 20px rgba(0, 0, 0, 0.12);
        }

        .btn-block {
            width: 100%;
            text-align: center;
        }

        .btn-sm {
            padding: 10px 20px;
            font-size: 14px;
        }

        .btn-lg {
            padding: 16px 36px;
            font-size: 16px;
        }

        /* ============ Header ============ */
        .site-header {
            position: fixed;
            top: 0;
            left: 0;
            right: 0;
            height: var(--header-height);
            background: rgba(255, 255, 255, 0.9);
            backdrop-filter: blur(8px);
            -webkit-backdrop-filter: blur(8px);
            border-bottom: 1px solid var(--border);
            z-index: 1000;
        }

        .header-inner {
            height: 100%;
            display: flex;
            align-items: center;
            gap: 32px;
        }

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

        .logo-icon {
            width: 36px;
            height: 36px;
            border-radius: 10px;
            background: var(--primary);
            color: #fff;
            display: flex;
            align-items: center;
            justify-content: center;
            font-size: 16px;
        }

        .logo-text {
            font-size: 17px;
            font-weight: 700;
            color: var(--text-primary);
            letter-spacing: 0.02em;
            white-space: nowrap;
        }

        .main-nav {
            display: flex;
            align-items: center;
            gap: 6px;
            flex: 1;
        }

        .nav-link {
            padding: 8px 16px;
            border-radius: 8px;
            font-size: 15px;
            font-weight: 500;
            color: var(--text-secondary);
            position: relative;
            transition: var(--transition);
        }

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

        .nav-link.active {
            color: var(--primary);
            font-weight: 600;
        }

        .nav-link.active::after {
            content: "";
            position: absolute;
            bottom: 2px;
            left: 16px;
            right: 16px;
            height: 2px;
            border-radius: 2px;
            background: var(--primary);
        }

        .nav-link:focus-visible {
            outline: 2px solid rgba(58, 108, 159, 0.4);
            outline-offset: 2px;
        }

        .header-actions {
            display: flex;
            align-items: center;
            gap: 12px;
            flex-shrink: 0;
        }

        .command-search {
            display: flex;
            align-items: center;
            gap: 8px;
            width: 220px;
            height: 40px;
            padding: 0 12px;
            background: #F0F3F7;
            border: 1px solid var(--border);
            border-radius: var(--radius-input);
            transition: var(--transition);
            cursor: text;
        }

        .command-search:hover {
            border-color: rgba(58, 108, 159, 0.4);
            background: #Eef2f6;
        }

        .command-search:focus-within {
            border-color: var(--primary);
            background: #fff;
            box-shadow: 0 0 0 3px rgba(58, 108, 159, 0.12);
        }

        .command-search .search-icon {
            color: var(--text-tertiary);
            font-size: 14px;
            flex-shrink: 0;
        }

        .command-search input {
            flex: 1;
            min-width: 0;
            font-size: 14px;
            color: var(--text-primary);
            background: transparent;
        }

        .command-search input::placeholder {
            color: var(--text-tertiary);
        }

        .search-kbd {
            flex-shrink: 0;
            padding: 2px 6px;
            border: 1px solid var(--border);
            border-radius: 4px;
            background: #fff;
            color: var(--text-tertiary);
            font-size: 11px;
            font-weight: 500;
            font-family: inherit;
            letter-spacing: 0.02em;
        }

        .mobile-toggle {
            display: none;
            width: 40px;
            height: 40px;
            border-radius: 8px;
            border: 1px solid var(--border);
            background: var(--surface);
            color: var(--text-secondary);
            font-size: 16px;
            cursor: pointer;
            align-items: center;
            justify-content: center;
            transition: var(--transition);
        }

        .mobile-toggle:hover {
            color: var(--primary);
            border-color: var(--primary);
        }

        .mobile-toggle:focus-visible {
            outline: 2px solid rgba(58, 108, 159, 0.4);
        }

        .mobile-menu {
            display: none;
            position: fixed;
            top: var(--header-height);
            left: 0;
            right: 0;
            background: var(--surface);
            border-bottom: 1px solid var(--border);
            padding: 16px 24px 24px;
            box-shadow: var(--shadow-card);
            z-index: 999;
            transform: translateY(-12px);
            opacity: 0;
            pointer-events: none;
            transition: var(--transition);
        }

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

        .mobile-link {
            display: block;
            padding: 12px 12px;
            border-radius: 8px;
            font-size: 16px;
            font-weight: 500;
            color: var(--text-secondary);
            transition: var(--transition);
        }

        .mobile-link:hover {
            background: var(--primary-light);
            color: var(--primary);
        }

        .mobile-link.active {
            color: var(--primary);
            font-weight: 600;
            background: var(--primary-light);
        }

        .mobile-menu .btn {
            margin-top: 12px;
        }

        /* ============ Main ============ */
        main {
            padding-top: var(--header-height);
        }

        /* ============ Page Hero ============ */
        .page-hero {
            padding: 72px 0 56px;
            background: var(--bg-page);
            border-bottom: 1px solid var(--border);
            position: relative;
            overflow: hidden;
        }

        .page-hero::before {
            content: "";
            position: absolute;
            inset: 0;
            background-image: radial-gradient(circle, rgba(58, 108, 159, 0.05) 1px, transparent 1px);
            background-size: 28px 28px;
            pointer-events: none;
        }

        .page-hero .container {
            position: relative;
        }

        .breadcrumb {
            display: flex;
            align-items: center;
            gap: 8px;
            font-size: 14px;
            color: var(--text-tertiary);
            margin-bottom: 20px;
        }

        .breadcrumb a {
            color: var(--primary);
            font-weight: 500;
        }

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

        .breadcrumb i {
            font-size: 10px;
            color: var(--text-tertiary);
        }

        .page-hero h1 {
            font-size: 38px;
            line-height: 1.25;
            font-weight: 700;
            color: var(--text-primary);
            margin-bottom: 16px;
            letter-spacing: 0.01em;
        }

        .page-hero .hero-sub {
            font-size: 16px;
            line-height: 1.75;
            color: var(--text-secondary);
            max-width: 640px;
        }

        .hero-tags {
            display: flex;
            flex-wrap: wrap;
            gap: 12px;
            margin-top: 28px;
        }

        .hero-tag {
            display: inline-flex;
            align-items: center;
            gap: 6px;
            padding: 6px 16px;
            background: var(--surface);
            border: 1px solid var(--border);
            border-radius: var(--radius-tag);
            font-size: 13px;
            color: var(--text-secondary);
            font-weight: 500;
            box-shadow: 0 2px 6px rgba(28, 55, 90, 0.04);
            transition: var(--transition);
        }

        .hero-tag i {
            color: var(--primary);
            font-size: 12px;
        }

        .hero-tag:hover {
            border-color: var(--primary);
            color: var(--primary);
            transform: translateY(-1px);
        }

        /* ============ Section Common ============ */
        .section {
            padding: 96px 0;
        }

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

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

        .section-header {
            max-width: 720px;
            margin-bottom: 56px;
        }

        .section-header.center {
            margin-left: auto;
            margin-right: auto;
            text-align: center;
        }

        .section-header .section-label {
            display: inline-flex;
            align-items: center;
            gap: 6px;
            font-size: 13px;
            font-weight: 600;
            color: var(--primary);
            background: var(--primary-light);
            padding: 5px 14px;
            border-radius: var(--radius-tag);
            margin-bottom: 14px;
        }

        .section-header h2 {
            font-size: 28px;
            line-height: 1.3;
            font-weight: 700;
            color: var(--text-primary);
            margin-bottom: 12px;
        }

        .section-header p {
            font-size: 16px;
            color: var(--text-secondary);
            line-height: 1.75;
        }

        /* ============ Feature Matrix ============ */
        .feature-matrix-grid {
            display: grid;
            grid-template-columns: repeat(12, 1fr);
            gap: 24px;
        }

        .feature-card-large {
            grid-column: span 6;
            background: var(--surface);
            border: 1px solid var(--border);
            border-radius: var(--radius-card);
            padding: 36px 32px;
            box-shadow: var(--shadow-card);
            transition: var(--transition);
            position: relative;
            overflow: hidden;
        }

        .feature-card-large::after {
            content: "";
            position: absolute;
            top: 0;
            right: 0;
            width: 120px;
            height: 120px;
            border-radius: 0 0 0 100%;
            background: var(--primary-light);
            opacity: 0.5;
            pointer-events: none;
        }

        .feature-card-large:hover {
            transform: translateY(-4px);
            box-shadow: var(--shadow-hover);
            border-color: rgba(58, 108, 159, 0.25);
        }

        .feature-card-large .feature-icon {
            width: 52px;
            height: 52px;
            border-radius: 14px;
            background: var(--primary-light);
            color: var(--primary);
            display: flex;
            align-items: center;
            justify-content: center;
            font-size: 22px;
            margin-bottom: 20px;
        }

        .feature-card-large h3 {
            font-size: 20px;
            font-weight: 700;
            color: var(--text-primary);
            margin-bottom: 10px;
        }

        .feature-card-large p {
            font-size: 15px;
            line-height: 1.75;
            color: var(--text-secondary);
            margin-bottom: 16px;
        }

        .feature-card-large .feature-link {
            font-size: 14px;
            font-weight: 600;
            color: var(--primary);
            display: inline-flex;
            align-items: center;
            gap: 6px;
        }

        .feature-card-large .feature-link:hover {
            color: var(--primary-strong);
            gap: 10px;
        }

        .feature-card-small {
            grid-column: span 3;
            background: var(--surface);
            border: 1px solid var(--border);
            border-radius: var(--radius-card);
            padding: 28px 24px;
            box-shadow: var(--shadow-card);
            transition: var(--transition);
        }

        .feature-card-small:hover {
            transform: translateY(-4px);
            box-shadow: var(--shadow-hover);
            border-color: rgba(58, 108, 159, 0.25);
        }

        .feature-card-small .feature-icon {
            width: 44px;
            height: 44px;
            border-radius: 12px;
            background: var(--primary-light);
            color: var(--primary);
            display: flex;
            align-items: center;
            justify-content: center;
            font-size: 18px;
            margin-bottom: 16px;
        }

        .feature-card-small h3 {
            font-size: 17px;
            font-weight: 600;
            color: var(--text-primary);
            margin-bottom: 8px;
        }

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

        /* ============ Security Alternating ============ */
        .security-list {
            display: flex;
            flex-direction: column;
            gap: 80px;
        }

        .security-item {
            display: grid;
            grid-template-columns: 1fr 1fr;
            gap: 64px;
            align-items: center;
        }

        .security-item.reverse .security-image {
            order: 2;
        }

        .security-image {
            border-radius: var(--radius-card);
            overflow: hidden;
            box-shadow: var(--shadow-card);
            position: relative;
            aspect-ratio: 4/3;
        }

        .security-image img {
            width: 100%;
            height: 100%;
            object-fit: cover;
            border-radius: var(--radius-card);
            transition: transform 0.6s ease;
        }

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

        .security-image .img-badge {
            position: absolute;
            top: 16px;
            left: 16px;
            background: rgba(255, 255, 255, 0.92);
            backdrop-filter: blur(6px);
            color: var(--primary);
            font-size: 13px;
            font-weight: 600;
            padding: 6px 14px;
            border-radius: var(--radius-tag);
            box-shadow: 0 4px 12px rgba(28, 55, 90, 0.1);
        }

        .security-content h3 {
            font-size: 24px;
            font-weight: 700;
            color: var(--text-primary);
            margin-bottom: 14px;
            line-height: 1.35;
        }

        .security-content p {
            font-size: 16px;
            line-height: 1.85;
            color: var(--text-secondary);
            margin-bottom: 20px;
        }

        .security-points {
            display: flex;
            flex-direction: column;
            gap: 12px;
        }

        .security-points li {
            display: flex;
            align-items: flex-start;
            gap: 10px;
            font-size: 15px;
            color: var(--text-secondary);
            line-height: 1.6;
        }

        .security-points li i {
            color: var(--success);
            font-size: 14px;
            margin-top: 4px;
            flex-shrink: 0;
        }

        /* ============ Metrics ============ */
        .metrics-grid {
            display: grid;
            grid-template-columns: repeat(4, 1fr);
            gap: 32px;
            text-align: center;
        }

        .metric-item {
            padding: 36px 24px;
            background: var(--surface);
            border: 1px solid var(--border);
            border-radius: var(--radius-card);
            box-shadow: var(--shadow-card);
            transition: var(--transition);
        }

        .metric-item:hover {
            transform: translateY(-4px);
            box-shadow: var(--shadow-hover);
            border-color: rgba(58, 108, 159, 0.25);
        }

        .metric-circle {
            width: 96px;
            height: 96px;
            border-radius: 50%;
            border: 2px solid var(--primary);
            background: var(--primary-light);
            color: var(--primary);
            display: flex;
            align-items: center;
            justify-content: center;
            font-size: 32px;
            margin: 0 auto 20px;
            transition: var(--transition);
        }

        .metric-item:hover .metric-circle {
            background: var(--primary);
            color: #fff;
            box-shadow: 0 8px 20px rgba(58, 108, 159, 0.25);
        }

        .metric-item h3 {
            font-size: 20px;
            font-weight: 700;
            color: var(--text-primary);
            margin-bottom: 8px;
        }

        .metric-item p {
            font-size: 14px;
            color: var(--text-secondary);
            line-height: 1.7;
        }

        /* ============ CTA Banner ============ */
        .cta-banner {
            padding: 80px 0;
            background: var(--primary);
            position: relative;
            overflow: hidden;
        }

        .cta-banner .cta-bg {
            position: absolute;
            inset: 0;
            background-image: url('/assets/images/backpic/back-2.webp');
            background-size: cover;
            background-position: center;
            opacity: 0.4;
            mix-blend-mode: multiply;
        }

        .cta-banner::after {
            content: "";
            position: absolute;
            inset: 0;
            background: rgba(46, 85, 125, 0.5);
        }

        .cta-banner .container {
            position: relative;
            z-index: 1;
            display: flex;
            align-items: center;
            justify-content: space-between;
            gap: 40px;
            flex-wrap: wrap;
        }

        .cta-content {
            max-width: 560px;
        }

        .cta-content h2 {
            font-size: 30px;
            font-weight: 700;
            color: #fff;
            line-height: 1.3;
            margin-bottom: 14px;
        }

        .cta-content p {
            font-size: 16px;
            color: rgba(255, 255, 255, 0.88);
            line-height: 1.8;
        }

        .cta-actions {
            display: flex;
            gap: 16px;
            flex-shrink: 0;
        }

        .cta-actions .btn-white {
            min-width: 160px;
        }

        .cta-actions .btn-outline-white {
            background: transparent;
            color: #fff;
            border-color: rgba(255, 255, 255, 0.6);
        }

        .cta-actions .btn-outline-white:hover {
            background: rgba(255, 255, 255, 0.1);
            border-color: #fff;
            color: #fff;
        }

        /* ============ Footer ============ */
        .site-footer {
            background: var(--surface);
            border-top: 1px solid var(--border);
            padding: 64px 0 0;
        }

        .footer-grid {
            display: grid;
            grid-template-columns: 2fr 1fr 1fr 1.4fr;
            gap: 48px;
            padding-bottom: 48px;
        }

        .footer-brand .logo {
            margin-bottom: 16px;
        }

        .footer-brand p {
            font-size: 14px;
            line-height: 1.8;
            color: var(--text-secondary);
            max-width: 320px;
        }

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

        .footer-col ul {
            display: flex;
            flex-direction: column;
            gap: 10px;
        }

        .footer-col ul li a {
            font-size: 14px;
            color: var(--text-secondary);
            transition: var(--transition);
        }

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

        .footer-contact li {
            display: flex;
            align-items: center;
            gap: 10px;
            font-size: 14px;
            color: var(--text-secondary);
        }

        .footer-contact li i {
            color: var(--primary);
            width: 16px;
            text-align: center;
        }

        .footer-bottom {
            border-top: 1px solid var(--border);
            padding: 20px 0;
            text-align: center;
        }

        .footer-bottom p {
            font-size: 13px;
            color: var(--text-tertiary);
            line-height: 1.6;
        }

        /* ============ Responsive ============ */
        @media (max-width: 1024px) {
            .container {
                padding: 0 16px;
            }

            .main-nav {
                gap: 2px;
            }

            .nav-link {
                padding: 8px 10px;
                font-size: 14px;
            }

            .command-search {
                width: 180px;
            }

            .header-inner {
                gap: 16px;
            }

            .feature-card-large {
                grid-column: span 12;
            }

            .feature-card-small {
                grid-column: span 6;
            }

            .security-item {
                gap: 40px;
            }

            .cta-banner .container {
                flex-direction: column;
                text-align: center;
            }

            .cta-content {
                max-width: 100%;
            }

            .cta-actions {
                justify-content: center;
            }

            .footer-grid {
                grid-template-columns: 1fr 1fr;
                gap: 32px;
            }
        }

        @media (max-width: 768px) {
            .main-nav {
                display: none;
            }

            .command-search {
                display: none;
            }

            .mobile-toggle {
                display: flex;
            }

            .header-actions .btn-accent {
                display: none;
            }

            .mobile-menu {
                display: block;
            }

            .page-hero {
                padding: 48px 0 40px;
            }

            .page-hero h1 {
                font-size: 28px;
            }

            .page-hero .hero-sub {
                font-size: 15px;
            }

            .section {
                padding: 56px 0;
            }

            .section-header {
                margin-bottom: 36px;
            }

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

            .feature-matrix-grid {
                gap: 16px;
            }

            .feature-card-large {
                grid-column: span 12;
                padding: 28px 20px;
            }

            .feature-card-small {
                grid-column: span 12;
                padding: 24px 20px;
            }

            .security-list {
                gap: 56px;
            }

            .security-item {
                grid-template-columns: 1fr;
                gap: 24px;
            }

            .security-item.reverse .security-image {
                order: 0;
            }

            .security-content h3 {
                font-size: 20px;
            }

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

            .metric-item {
                padding: 24px 16px;
            }

            .metric-circle {
                width: 80px;
                height: 80px;
                font-size: 26px;
            }

            .cta-banner {
                padding: 56px 0;
            }

            .cta-content h2 {
                font-size: 24px;
            }

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

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

            .footer-grid {
                grid-template-columns: 1fr;
                gap: 24px;
            }

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

        @media (max-width: 520px) {
            .logo-text {
                font-size: 15px;
            }

            .page-hero h1 {
                font-size: 24px;
            }

            .hero-tags {
                gap: 8px;
            }

            .hero-tag {
                font-size: 12px;
                padding: 4px 12px;
            }

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

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

            .feature-card-large::after {
                display: none;
            }
        }

/* roulang page: category3 */
:root {
  --bg-page: #F6F8FB;
  --surface: #FFFFFF;
  --primary: #3A6C9F;
  --primary-strong: #2E557D;
  --primary-light: #EAF0F6;
  --accent: #E09A3F;
  --accent-strong: #C97E28;
  --success: #2F9E6E;
  --danger: #D45664;
  --warning: #E6A23C;
  --text-primary: #1C2A38;
  --text-secondary: #526579;
  --text-tertiary: #8B9AA8;
  --border: #E3EAF2;
  --shadow-card: 0 8px 24px rgba(28, 55, 90, 0.08);
  --shadow-hover: 0 12px 32px rgba(28, 55, 90, 0.14);
  --radius-card: 12px;
  --radius-btn: 8px;
  --radius-input: 10px;
  --radius-tag: 999px;
  --section-space: 96px;
}
*, *::before, *::after { box-sizing: border-box; margin: 0; padding: 0; }
html { scroll-behavior: smooth; }
body {
  font-family: -apple-system, BlinkMacSystemFont, "PingFang SC", "Hiragino Sans GB", "Microsoft YaHei", "Noto Sans CJK SC", sans-serif;
  background: var(--bg-page);
  color: var(--text-primary);
  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: color 0.2s; }
a:hover { color: var(--primary-strong); }
ul, ol { list-style: none; }
button, input { font-family: inherit; font-size: 100%; border: none; outline: none; }
.container { max-width: 1200px; margin: 0 auto; padding-left: 24px; padding-right: 24px; }

/* Buttons */
.btn { display: inline-flex; align-items: center; justify-content: center; gap: 8px; border-radius: var(--radius-btn); font-weight: 600; font-size: 15px; padding: 12px 28px; cursor: pointer; transition: all 0.25s ease; text-decoration: none; line-height: 1.4; border: 1px solid transparent; }
.btn:focus-visible { outline: 2px solid rgba(58, 108, 159, 0.45); outline-offset: 2px; }
.btn-accent { background: var(--accent); color: #fff; box-shadow: 0 4px 14px rgba(224, 154, 63, 0.25); }
.btn-accent:hover { background: var(--accent-strong); color: #fff; transform: translateY(-2px); box-shadow: 0 6px 18px rgba(224, 154, 63, 0.3); }
.btn-accent:active { transform: translateY(0); }
.btn-primary { background: var(--primary); color: #fff; }
.btn-primary:hover { background: var(--primary-strong); color: #fff; transform: translateY(-2px); }
.btn-outline { background: transparent; border: 1px solid var(--primary); color: var(--primary); }
.btn-outline:hover { background: var(--primary-light); color: var(--primary-strong); }
.btn-light { background: #fff; color: var(--primary); }
.btn-light:hover { background: #F0F4F8; color: var(--primary-strong); transform: translateY(-2px); }
.btn-sm { padding: 9px 20px; font-size: 14px; }
.btn-lg { padding: 14px 36px; font-size: 16px; }

/* Tags & Badges */
.tag { display: inline-flex; align-items: center; gap: 6px; padding: 5px 14px; border-radius: var(--radius-tag); font-size: 12px; font-weight: 600; background: var(--primary-light); color: var(--primary); }
.pin-badge, .badge { display: inline-flex; align-items: center; gap: 6px; padding: 5px 14px; border-radius: var(--radius-tag); font-size: 12px; font-weight: 700; background: var(--accent); color: #fff; box-shadow: 0 2px 8px rgba(224, 154, 63, 0.3); }
.badge-blue { background: var(--primary); color: #fff; }

/* ===== Header ===== */
.main-header { position: fixed; top: 0; left: 0; right: 0; height: 64px; background: rgba(255, 255, 255, 0.92); backdrop-filter: blur(8px); border-bottom: 1px solid var(--border); z-index: 100; }
.nav-container { display: flex; align-items: center; justify-content: space-between; height: 64px; gap: 16px; }
.logo { display: inline-flex; align-items: center; gap: 10px; text-decoration: none; flex-shrink: 0; }
.logo-icon { width: 36px; height: 36px; background: var(--primary-light); color: var(--primary); border-radius: 10px; display: inline-flex; align-items: center; justify-content: center; font-size: 16px; transition: background 0.3s; }
.logo:hover .logo-icon { background: var(--primary); color: #fff; }
.logo-text { font-weight: 700; font-size: 18px; color: var(--text-primary); letter-spacing: -0.2px; white-space: nowrap; }
.main-nav { display: flex; gap: 6px; margin: 0 12px; }
.nav-link { padding: 8px 16px; border-radius: 8px; color: var(--text-secondary); font-size: 15px; font-weight: 500; text-decoration: none; transition: all 0.2s; white-space: nowrap; }
.nav-link:hover { color: var(--primary); background: var(--primary-light); }
.nav-link.active { color: var(--primary); font-weight: 600; background: var(--primary-light); }
.nav-tools { display: flex; align-items: center; gap: 12px; }
.command-search { display: flex; align-items: center; gap: 8px; height: 40px; background: #FBFCFF; border: 1px solid var(--border); border-radius: 10px; padding: 0 8px 0 14px; width: 210px; transition: border-color 0.25s, box-shadow 0.25s; }
.command-search i { color: var(--text-tertiary); font-size: 14px; }
.command-search input { flex: 1; height: 100%; background: transparent; border: none; color: var(--text-primary); font-size: 14px; }
.command-search input::placeholder { color: var(--text-tertiary); }
.command-search input:focus { outline: none; }
.command-search:focus-within { border-color: var(--primary); box-shadow: 0 0 0 3px rgba(58, 108, 159, 0.12); }
.command-search kbd { font-family: inherit; font-size: 11px; background: var(--primary-light); color: var(--primary); border-radius: 4px; padding: 2px 8px; border: 1px solid rgba(58, 108, 159, 0.15); }
.icon-btn { width: 40px; height: 40px; border-radius: 10px; display: inline-flex; align-items: center; justify-content: center; background: transparent; color: var(--text-secondary); font-size: 16px; cursor: pointer; transition: all 0.2s; text-decoration: none; border: 1px solid transparent; }
.icon-btn:hover { background: var(--primary-light); color: var(--primary); }
.menu-toggle { display: none; flex-direction: column; justify-content: center; gap: 5px; width: 44px; height: 44px; background: transparent; cursor: pointer; padding: 0 8px; border-radius: 10px; }
.menu-toggle span { display: block; height: 2px; width: 22px; background: var(--text-primary); border-radius: 2px; transition: all 0.3s; }
.menu-toggle.active span:nth-child(1) { transform: translateY(7px) rotate(45deg); }
.menu-toggle.active span:nth-child(2) { opacity: 0; }
.menu-toggle.active span:nth-child(3) { transform: translateY(-7px) rotate(-45deg); }
.mobile-menu { display: none; position: fixed; top: 64px; left: 0; right: 0; background: var(--surface); border-bottom: 1px solid var(--border); box-shadow: var(--shadow-card); padding: 16px 24px 24px; z-index: 99; }
.mobile-menu.open { display: block; animation: fadeSlide 0.3s ease; }
@keyframes fadeSlide { from { opacity: 0; transform: translateY(-8px); } to { opacity: 1; transform: translateY(0); } }
.mobile-link { display: block; padding: 12px 8px; border-radius: 8px; color: var(--text-primary); font-size: 16px; font-weight: 500; text-decoration: none; transition: background 0.2s; }
.mobile-link:hover { background: var(--primary-light); color: var(--primary); }
.mobile-link.active { color: var(--primary); background: var(--primary-light); font-weight: 600; }
.mobile-cta { margin-top: 16px; width: 100%; }

/* ===== Page Hero ===== */
.page-hero { position: relative; padding: 160px 0 80px; background-color: var(--primary); background-image: url('/assets/images/backpic/back-2.webp'); background-size: cover; background-position: center; color: #fff; }
.page-hero::before { content: ''; position: absolute; inset: 0; background: rgba(46, 85, 125, 0.75); }
.page-hero .container { position: relative; z-index: 1; }
.breadcrumb { display: flex; align-items: center; gap: 10px; font-size: 14px; margin-bottom: 20px; opacity: 0.9; }
.breadcrumb a { color: rgba(255, 255, 255, 0.85); }
.breadcrumb a:hover { color: #fff; }
.breadcrumb span { color: rgba(255, 255, 255, 0.6); }
.page-hero h1 { font-size: 38px; line-height: 1.25; font-weight: 700; color: #fff; margin-bottom: 14px; }
.page-hero .hero-desc { font-size: 16px; max-width: 680px; color: rgba(255, 255, 255, 0.9); line-height: 1.75; }

/* ===== Announcement Section ===== */
.section { padding: var(--section-space) 0; }
.section-header { text-align: center; max-width: 640px; margin: 0 auto 48px; }
.section-header .tag { margin-bottom: 16px; }
.section-header h2 { font-size: 28px; line-height: 1.3; font-weight: 700; color: var(--text-primary); }
.section-header p { margin-top: 12px; color: var(--text-secondary); font-size: 16px; }
.top-announcement { display: block; background: var(--surface); border: 1px solid var(--border); border-left: 4px solid var(--accent); border-radius: var(--radius-card); box-shadow: var(--shadow-card); padding: 36px 40px; margin-bottom: 64px; transition: box-shadow 0.3s, transform 0.3s; position: relative; overflow: hidden; }
.top-announcement:hover { box-shadow: var(--shadow-hover); transform: translateY(-3px); }
.top-announcement .pin-badge { margin-bottom: 16px; }
.top-announcement h2 { font-size: 22px; font-weight: 700; color: var(--text-primary); line-height: 1.4; margin-bottom: 10px; }
.announcement-meta { font-size: 14px; color: var(--text-tertiary); margin-bottom: 16px; display: flex; align-items: center; gap: 6px; }
.announcement-desc { color: var(--text-secondary); font-size: 16px; line-height: 1.8; margin-bottom: 24px; max-width: 780px; }
.top-announcement .btn { margin-top: 4px; }

/* ===== Timeline ===== */
.news-timeline { position: relative; padding: 10px 0 20px; }
.news-timeline::before { content: ''; position: absolute; left: 204px; top: 0; bottom: 0; width: 2px; background: repeating-linear-gradient(to bottom, var(--border) 0 6px, transparent 6px 12px); }
.news-block { position: relative; display: flex; gap: 48px; margin-bottom: 36px; }
.news-block:last-child { margin-bottom: 0; }
.news-block::before { content: ''; position: absolute; left: 197px; top: 32px; width: 14px; height: 14px; border-radius: 50%; background: var(--surface); border: 3px solid var(--primary); box-shadow: 0 0 0 4px var(--primary-light); z-index: 1; }
.news-block.timeline-highlight::before { border-color: var(--accent); box-shadow: 0 0 0 4px rgba(224, 154, 63, 0.2); }
.news-date { width: 156px; flex-shrink: 0; text-align: right; padding-top: 14px; }
.news-day { display: block; font-size: 34px; font-weight: 700; color: var(--primary); line-height: 1; }
.news-block.timeline-highlight .news-day { color: var(--accent); }
.news-meta { display: block; font-size: 14px; color: var(--text-tertiary); margin-top: 6px; }
.news-card { flex: 1; background: var(--surface); border: 1px solid var(--border); border-radius: var(--radius-card); padding: 28px 32px; box-shadow: var(--shadow-card); transition: box-shadow 0.3s, transform 0.3s; }
.news-card:hover { box-shadow: var(--shadow-hover); transform: translateY(-3px); }
.news-card h3 { font-size: 18px; font-weight: 600; color: var(--text-primary); margin-bottom: 10px; line-height: 1.4; }
.news-card h3 a { color: var(--text-primary); transition: color 0.2s; }
.news-card h3 a:hover { color: var(--primary); }
.news-card p { color: var(--text-secondary); font-size: 15px; line-height: 1.75; margin-bottom: 16px; }
.news-more { display: inline-flex; align-items: center; gap: 6px; font-size: 14px; font-weight: 600; color: var(--primary); text-decoration: none; transition: all 0.2s; }
.news-more:hover { color: var(--accent); gap: 10px; }

/* ===== Help Banners ===== */
.help-banners { background: var(--surface); border-top: 1px solid var(--border); border-bottom: 1px solid var(--border); }
.help-grid { display: grid; grid-template-columns: 1fr 1fr; gap: 24px; }
.help-card { display: flex; align-items: stretch; background: var(--surface); border: 1px solid var(--border); border-radius: var(--radius-card); overflow: hidden; box-shadow: var(--shadow-card); transition: all 0.3s; text-decoration: none; }
.help-card:hover { box-shadow: var(--shadow-hover); transform: translateY(-4px); }
.help-card img { width: 38%; object-fit: cover; min-height: 220px; }
.help-content { flex: 1; padding: 28px 24px; display: flex; flex-direction: column; justify-content: center; }
.help-tag { display: inline-flex; align-items: center; align-self: flex-start; padding: 4px 12px; border-radius: var(--radius-tag); font-size: 12px; font-weight: 700; background: var(--primary-light); color: var(--primary); margin-bottom: 12px; }
.help-content h3 { font-size: 20px; font-weight: 700; color: var(--text-primary); margin-bottom: 10px; line-height: 1.4; }
.help-content p { color: var(--text-secondary); font-size: 15px; line-height: 1.7; margin-bottom: 18px; }
.help-cta { display: inline-flex; align-items: center; gap: 6px; font-size: 15px; font-weight: 600; color: var(--primary); transition: gap 0.2s; }
.help-card:hover .help-cta { gap: 10px; color: var(--accent); }

/* ===== CTA ===== */
.cta-section { padding: 96px 0; background-color: var(--primary); background-image: url('/assets/images/backpic/back-3.png'); background-size: cover; background-position: center; position: relative; color: #fff; }
.cta-section::before { content: ''; position: absolute; inset: 0; background: rgba(46, 85, 125, 0.78); }
.cta-section .container { position: relative; z-index: 1; text-align: center; }
.cta-section h2 { font-size: 30px; font-weight: 700; margin-bottom: 12px; color: #fff; }
.cta-section p { font-size: 16px; color: rgba(255, 255, 255, 0.9); max-width: 560px; margin: 0 auto 32px; }
.cta-buttons { display: flex; justify-content: center; gap: 16px; flex-wrap: wrap; }

/* ===== Footer ===== */
.site-footer { background: #1B2735; color: #BFD0E0; padding-top: 64px; }
.footer-grid { display: grid; grid-template-columns: 1.5fr 1fr 1fr 1.2fr; gap: 40px; padding-bottom: 48px; }
.footer-brand .logo { color: #fff; }
.footer-brand .logo-text { color: #fff; }
.footer-brand .logo-icon { background: rgba(255,255,255,0.12); color: #fff; }
.footer-brand .logo:hover .logo-icon { background: var(--primary); }
.footer-brand p { margin-top: 16px; font-size: 14px; line-height: 1.8; color: #94A9BB; max-width: 320px; }
.footer-col h4 { color: #fff; font-size: 16px; font-weight: 600; margin-bottom: 18px; }
.footer-col ul li { margin-bottom: 10px; }
.footer-col ul li a { color: #94A9BB; font-size: 14px; transition: color 0.2s, padding-left 0.2s; }
.footer-col ul li a:hover { color: #fff; padding-left: 4px; }
.footer-contact li { display: flex; align-items: center; gap: 10px; color: #94A9BB; font-size: 14px; }
.footer-contact li i { color: var(--accent); width: 16px; text-align: center; }
.footer-bottom { border-top: 1px solid rgba(255,255,255,0.08); padding: 20px 0; text-align: center; color: #7A8FA3; font-size: 13px; }
.footer-bottom p { line-height: 1.6; }

/* ===== Responsive ===== */
@media (max-width: 1024px) {
  .container { padding-left: 16px; padding-right: 16px; }
  .page-hero { padding: 140px 0 64px; }
  .page-hero h1 { font-size: 32px; }
  .main-nav { display: none; }
  .nav-tools .command-search { display: none; }
  .menu-toggle { display: flex; }
  .mobile-menu { display: none; }
  .mobile-menu.open { display: block; }
  .footer-grid { grid-template-columns: 1fr 1fr; gap: 32px; }
  .section { --section-space: 72px; }
}

@media (max-width: 768px) {
  .page-hero { padding: 120px 0 48px; }
  .page-hero h1 { font-size: 28px; }
  .section-header h2 { font-size: 24px; }
  .news-timeline::before { left: 8px; }
  .news-block { flex-direction: column; gap: 8px; padding-left: 32px; margin-bottom: 28px; }
  .news-block::before { left: 2px; top: 20px; width: 10px; height: 10px; box-shadow: 0 0 0 3px var(--primary-light); }
  .news-date { width: auto; text-align: left; padding-top: 0; display: flex; align-items: baseline; gap: 10px; }
  .news-day { font-size: 20px; }
  .news-meta { margin-top: 0; font-size: 13px; }
  .news-card { padding: 20px; }
  .top-announcement { padding: 24px; }
  .top-announcement h2 { font-size: 18px; }
  .help-grid { grid-template-columns: 1fr; }
  .help-card img { width: 100%; min-height: 160px; max-height: 200px; }
  .cta-section { padding: 64px 0; }
  .cta-section h2 { font-size: 24px; }
  .footer-grid { grid-template-columns: 1fr; gap: 28px; }
  .section { --section-space: 56px; }
  .btn-lg { padding: 12px 28px; font-size: 15px; }
}

@media (max-width: 520px) {
  .logo-text { font-size: 15px; }
  .nav-tools .icon-btn { display: none; }
  .nav-tools .btn-sm { padding: 8px 14px; font-size: 13px; }
  .footer-grid { grid-template-columns: 1fr; }
}