/* roulang page: index */
/* ===== Reset & Base ===== */
*, *::before, *::after { margin: 0; padding: 0; box-sizing: border-box; }
html { scroll-behavior: smooth; -webkit-text-size-adjust: 100%; }
body { font-family: "Noto Sans SC", "PingFang SC", "Microsoft YaHei", -apple-system, sans-serif; background: #F5F9FD; color: #1F2A37; line-height: 1.7; font-size: 15px; -webkit-font-smoothing: antialiased; }
img { max-width: 100%; display: block; }
a { color: inherit; text-decoration: none; transition: color .2s ease; }
ul, ol { list-style: none; }
button { font-family: inherit; cursor: pointer; }
input, textarea { font-family: inherit; }

:root {
  --color-bg: #F5F9FD;
  --color-bg-secondary: #EAF2F8;
  --color-bg-warm: #F7F3EB;
  --color-primary: #1C4E80;
  --color-primary-dark: #123A5E;
  --color-accent: #0FA958;
  --color-text: #1F2A37;
  --color-text-secondary: #576B7D;
  --color-border: #D8E2EC;
  --gradient-main: linear-gradient(135deg, #1C4E80 0%, #2E6FA3 60%, #0FA958 120%);
  --radius-card: 12px;
  --radius-pill: 999px;
  --radius-input: 6px;
  --shadow-card: 0 1px 3px rgba(28,78,128,0.08), 0 4px 12px rgba(28,78,128,0.06);
  --shadow-card-hover: 0 8px 24px rgba(28,78,128,0.12);
  --shadow-nav: 0 4px 16px rgba(28,78,128,0.10);
  --container-width: 1200px;
}

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

.section { padding: clamp(4rem, 8vw, 6rem) 0; }
.section-head { max-width: 760px; margin-bottom: 48px; }
.section-tag { display: inline-flex; align-items: center; gap: 6px; font-size: 13px; font-weight: 600; color: var(--color-accent); background: rgba(15,169,88,0.10); padding: 5px 14px; border-radius: var(--radius-pill); letter-spacing: 0.02em; }
.section-title { font-size: clamp(1.6rem, 2.5vw, 2.1rem); font-weight: 650; color: var(--color-primary); line-height: 1.3; margin-top: 14px; }
.section-desc { margin-top: 14px; color: var(--color-text-secondary); font-size: 15px; line-height: 1.75; }
.section-desc a { color: var(--color-primary); font-weight: 500; }

/* ===== Navigation ===== */
.site-nav { position: fixed; top: 12px; left: 50%; transform: translateX(-50%); width: calc(100% - 48px); max-width: 1200px; z-index: 1000; background: rgba(255,255,255,0.82); backdrop-filter: saturate(180%) blur(12px); -webkit-backdrop-filter: saturate(180%) blur(12px); border: 1px solid rgba(255,255,255,0.6); border-radius: var(--radius-pill); box-shadow: var(--shadow-nav); transition: box-shadow .3s ease, background .3s ease; }
.site-nav.scrolled { background: rgba(255,255,255,0.92); box-shadow: 0 6px 20px rgba(28,78,128,0.14); }
.nav-inner { display: flex; align-items: center; justify-content: space-between; padding: 10px 20px; }
.brand { display: flex; align-items: center; gap: 10px; font-size: 17px; font-weight: 700; color: var(--color-primary); white-space: nowrap; letter-spacing: -0.01em; }
.brand-dot { width: 8px; height: 8px; border-radius: 50%; background: var(--color-accent); flex-shrink: 0; box-shadow: 0 0 0 4px rgba(15,169,88,0.15); }
.nav-menu { display: flex; align-items: center; gap: 6px; }
.nav-link { display: inline-block; padding: 8px 18px; border-radius: var(--radius-pill); font-size: 14px; font-weight: 500; color: var(--color-text-secondary); transition: all .25s ease; }
.nav-link:hover { color: var(--color-primary); background: rgba(28,78,128,0.08); }
.nav-link.active { background: var(--color-primary); color: #fff; font-weight: 600; box-shadow: 0 2px 8px rgba(28,78,128,0.25); }
.nav-toggle { display: none; flex-direction: column; justify-content: center; gap: 5px; width: 40px; height: 36px; border: none; background: transparent; border-radius: 8px; align-items: center; }
.nav-toggle span { display: block; width: 20px; height: 2px; background: var(--color-primary); border-radius: 2px; transition: all .3s ease; }
.nav-toggle.open span:nth-child(1) { transform: translateY(7px) rotate(45deg); }
.nav-toggle.open span:nth-child(2) { opacity: 0; }
.nav-toggle.open span:nth-child(3) { transform: translateY(-7px) rotate(-45deg); }

/* ===== Hero ===== */
.hero { position: relative; padding-top: 120px; background: linear-gradient(130deg, rgba(28,78,128,0.88), rgba(18,58,94,0.82)), url('/assets/images/backpic/back-1.webp') center/cover no-repeat; overflow: hidden; }
.hero::after { content: ''; position: absolute; right: -120px; bottom: -120px; width: 380px; height: 380px; border-radius: 50%; background: radial-gradient(circle, rgba(15,169,88,0.28), transparent 70%); pointer-events: none; }
.hero-inner { display: grid; grid-template-columns: 1fr 0.85fr; gap: 48px; align-items: center; padding: clamp(2.5rem, 5vw, 4.5rem) 0; position: relative; z-index: 2; }
.hero-label { display: inline-flex; align-items: center; gap: 8px; background: rgba(255,255,255,0.16); color: #fff; font-size: 13px; font-weight: 500; padding: 6px 16px; border-radius: var(--radius-pill); margin-bottom: 22px; letter-spacing: 0.02em; border: 1px solid rgba(255,255,255,0.22); }
.hero-label::before { content: ''; width: 6px; height: 6px; border-radius: 50%; background: var(--color-accent); }
.hero h1 { font-size: clamp(2.2rem, 4vw, 3rem); font-weight: 700; color: #fff; line-height: 1.22; letter-spacing: -0.01em; }
.hero-sub { margin-top: 18px; font-size: 16px; line-height: 1.75; color: rgba(255,255,255,0.88); max-width: 540px; }
.hero-actions { display: flex; flex-wrap: wrap; gap: 14px; margin-top: 28px; }
.btn-primary { display: inline-flex; align-items: center; justify-content: center; gap: 8px; background: var(--gradient-main); color: #fff; font-size: 15px; font-weight: 600; padding: 12px 28px; border-radius: var(--radius-pill); border: none; transition: all .25s ease; box-shadow: 0 4px 14px rgba(28,78,128,0.3); }
.btn-primary:hover { transform: translateY(-2px); box-shadow: 0 8px 22px rgba(28,78,128,0.36); filter: brightness(1.05); }
.btn-primary:active { transform: translateY(0); }
.btn-primary:focus-visible { outline: 2px solid #fff; outline-offset: 3px; }
.btn-secondary { display: inline-flex; align-items: center; justify-content: center; gap: 8px; background: rgba(255,255,255,0.96); color: var(--color-primary); font-size: 15px; font-weight: 600; padding: 12px 28px; border-radius: var(--radius-pill); border: 1px solid rgba(255,255,255,0.8); transition: all .25s ease; }
.btn-secondary:hover { border-color: var(--color-primary); transform: translateY(-2px); box-shadow: 0 4px 14px rgba(255,255,255,0.18); }
.btn-secondary:active { transform: translateY(0); }
.btn-secondary:focus-visible { outline: 2px solid var(--color-primary); outline-offset: 3px; }
.hero-visual { position: relative; }
.hero-visual-card { background: rgba(255,255,255,0.14); border: 1px solid rgba(255,255,255,0.25); border-radius: 16px; padding: 16px; backdrop-filter: blur(10px); -webkit-backdrop-filter: blur(10px); box-shadow: 0 16px 40px rgba(0,0,0,0.18); }
.hero-visual-card img { border-radius: 10px; width: 100%; height: 240px; object-fit: cover; }
.hero-visual-meta { display: flex; align-items: center; justify-content: space-between; padding: 14px 2px 4px; color: #fff; font-size: 13px; }
.hero-visual-meta .meta-badge { background: rgba(255,255,255,0.18); padding: 4px 12px; border-radius: var(--radius-pill); font-weight: 500; font-size: 12px; }
.hero-visual-meta .meta-time { color: rgba(255,255,255,0.85); }
.hero-announce { position: relative; z-index: 2; background: rgba(255,255,255,0.94); border-radius: var(--radius-pill); box-shadow: var(--shadow-card); display: flex; align-items: center; gap: 12px; max-width: 720px; margin: 0 auto 28px; padding: 12px 24px; border: 1px solid rgba(255,255,255,0.6); }
.hero-announce .announce-icon { color: var(--color-accent); flex-shrink: 0; }
.hero-announce .announce-text { font-size: 14px; color: var(--color-text); overflow: hidden; white-space: nowrap; text-overflow: ellipsis; }
.hero-announce .announce-text strong { color: var(--color-primary); }

/* ===== Services ===== */
.services-grid { display: grid; grid-template-columns: 1.2fr 0.8fr; gap: 24px; }
.service-card { background: #fff; border-radius: var(--radius-card); padding: 32px; box-shadow: var(--shadow-card); transition: transform .3s ease, box-shadow .3s ease; position: relative; display: flex; flex-direction: column; }
.service-card:hover { transform: translateY(-4px); box-shadow: var(--shadow-card-hover); }
.service-card::after { content: '→'; position: absolute; right: 24px; bottom: 24px; font-size: 18px; color: var(--color-primary); opacity: 0; transition: opacity .3s ease; }
.service-card:hover::after { opacity: 1; }
.service-icon { width: 46px; height: 46px; border-radius: 12px; display: flex; align-items: center; justify-content: center; background: rgba(28,78,128,0.10); color: var(--color-primary); margin-bottom: 18px; }
.service-icon.accent { background: rgba(15,169,88,0.12); color: var(--color-accent); }
.service-card h3 { font-size: 18px; font-weight: 600; color: var(--color-primary); margin-bottom: 10px; }
.service-card p { font-size: 14px; color: var(--color-text-secondary); line-height: 1.7; }

/* ===== Stats ===== */
.stats-section { background: var(--color-bg); border-top: 1px solid var(--color-border); border-bottom: 1px solid var(--color-border); }
.stats-grid { display: grid; grid-template-columns: repeat(4, 1fr); gap: 32px; text-align: center; }
.stat-item { padding: 20px 8px; position: relative; }
.stat-item + .stat-item::before { content: ''; position: absolute; left: 0; top: 20%; bottom: 20%; width: 1px; background: var(--color-border); }
.stat-num { font-family: "Inter", "Roboto", sans-serif; font-size: clamp(2rem, 3vw, 2.6rem); font-weight: 700; color: var(--color-primary); line-height: 1.1; }
.stat-num .stat-suffix { font-size: 0.6em; color: var(--color-accent); margin-left: 2px; }
.stat-label { margin-top: 6px; font-size: 13px; color: var(--color-text-secondary); }

/* ===== Timeline ===== */
.timeline-section { background: var(--color-bg-secondary); }
.timeline-wrap { position: relative; max-width: 860px; margin: 0 auto; padding-left: 8px; }
.timeline-wrap::before { content: ''; position: absolute; left: 42px; top: 12px; bottom: 12px; width: 2px; background: linear-gradient(to bottom, var(--color-accent), var(--color-border)); }
.timeline-item { display: grid; grid-template-columns: 48px 1fr; gap: 20px; position: relative; padding: 20px 0; }
.timeline-dot { width: 18px; height: 18px; border-radius: 50%; background: #fff; border: 4px solid var(--color-accent); margin-left: auto; margin-right: auto; position: relative; z-index: 2; margin-top: 8px; box-shadow: 0 0 0 4px rgba(15,169,88,0.15); }
.timeline-date { font-family: "Inter", "Roboto", sans-serif; font-size: 13px; color: var(--color-accent); font-weight: 600; letter-spacing: 0.02em; margin-bottom: 4px; }
.timeline-content { background: #fff; border-radius: var(--radius-card); padding: 22px 26px; box-shadow: var(--shadow-card); transition: transform .3s ease, box-shadow .3s ease; }
.timeline-content:hover { transform: translateY(-2px); box-shadow: var(--shadow-card-hover); }
.timeline-content h3 { font-size: 16px; font-weight: 600; color: var(--color-primary); margin-bottom: 6px; }
.timeline-content p { font-size: 14px; color: var(--color-text-secondary); line-height: 1.7; }

/* ===== Steps ===== */
.steps-section { position: relative; overflow: hidden; }
.steps-section::before { content: ''; position: absolute; top: 0; left: 50%; width: 1px; height: 100%; background: transparent; }
.steps-grid { display: grid; grid-template-columns: repeat(3, 1fr); gap: 32px; position: relative; }
.steps-grid::before { content: ''; position: absolute; top: 56px; left: 12%; right: 12%; height: 2px; background-image: linear-gradient(90deg, var(--color-accent), var(--color-border) 60%); opacity: 0.6; border-radius: 2px; }
.step-card { background: #fff; border-radius: var(--radius-card); padding: 32px 28px; box-shadow: var(--shadow-card); position: relative; text-align: center; transition: transform .3s ease, box-shadow .3s ease; }
.step-card:hover { transform: translateY(-4px); box-shadow: var(--shadow-card-hover); }
.step-num { width: 40px; height: 40px; border-radius: 50%; background: var(--color-primary); color: #fff; font-weight: 700; font-size: 16px; display: flex; align-items: center; justify-content: center; margin: 0 auto 18px; box-shadow: 0 4px 10px rgba(28,78,128,0.25); position: relative; z-index: 2; }
.step-card h3 { font-size: 16px; font-weight: 600; color: var(--color-primary); margin-bottom: 10px; }
.step-card p { font-size: 14px; color: var(--color-text-secondary); line-height: 1.7; }

/* ===== FAQ ===== */
.faq-section { background: var(--color-bg); }
.faq-list { max-width: 820px; margin: 0 auto; }
.faq-item { border-bottom: 1px solid var(--color-border); transition: background .3s ease; }
.faq-item:first-child { border-top: 1px solid var(--color-border); }
.faq-q { display: flex; align-items: center; justify-content: space-between; padding: 22px 8px; cursor: pointer; background: transparent; border: none; width: 100%; text-align: left; font-size: 15px; font-weight: 600; color: var(--color-text); transition: color .25s ease; }
.faq-q:hover { color: var(--color-primary); }
.faq-icon { flex-shrink: 0; width: 28px; height: 28px; border-radius: 50%; background: var(--color-bg-secondary); display: flex; align-items: center; justify-content: center; transition: all .3s ease; color: var(--color-primary); font-size: 16px; }
.faq-item.open { background: var(--color-bg-secondary); border-radius: 10px; margin: 4px 0; border-color: transparent; }
.faq-item.open .faq-q { color: var(--color-primary); }
.faq-item.open .faq-icon { background: var(--color-primary); color: #fff; transform: rotate(45deg); }
.faq-a { max-height: 0; overflow: hidden; transition: max-height 0.35s ease, padding 0.35s ease; padding: 0 24px 0 20px; }
.faq-item.open .faq-a { max-height: 320px; padding-bottom: 20px; }
.faq-a p { font-size: 14px; color: var(--color-text-secondary); line-height: 1.75; text-indent: 1em; }

/* ===== News / CMS ===== */
.news-section { background: var(--color-bg-secondary); }
.news-header { display: flex; align-items: flex-end; justify-content: space-between; margin-bottom: 36px; gap: 20px; }
.news-header .section-tag { margin-bottom: 0; }
.news-list { display: grid; grid-template-columns: repeat(auto-fill, minmax(360px, 1fr)); gap: 24px; }
.news-card { display: flex; background: #fff; border-radius: var(--radius-card); overflow: hidden; box-shadow: var(--shadow-card); transition: transform .3s ease, box-shadow .3s ease; text-decoration: none; }
.news-card:hover { transform: translateY(-4px); box-shadow: var(--shadow-card-hover); }
.news-thumb { flex: 0 0 120px; background: var(--color-bg-secondary); overflow: hidden; }
.news-thumb img { width: 100%; height: 100%; object-fit: cover; transition: transform .4s ease; }
.news-card:hover .news-thumb img { transform: scale(1.05); }
.news-content { padding: 16px 18px; display: flex; flex-direction: column; }
.news-cat { display: inline-block; font-size: 12px; font-weight: 600; color: var(--color-accent); background: rgba(15,169,88,0.10); padding: 2px 10px; border-radius: var(--radius-pill); align-self: flex-start; margin-bottom: 8px; }
.news-content h3 { font-size: 15px; font-weight: 600; color: var(--color-text); line-height: 1.5; margin-bottom: 6px; display: -webkit-box; -webkit-line-clamp: 2; -webkit-box-orient: vertical; overflow: hidden; }
.news-content p { font-size: 13px; color: var(--color-text-secondary); display: -webkit-box; -webkit-line-clamp: 2; -webkit-box-orient: vertical; overflow: hidden; margin-bottom: 10px; }
.news-footer { margin-top: auto; display: flex; align-items: center; justify-content: space-between; font-size: 12px; color: var(--color-text-secondary); }
.news-footer .read-more { color: var(--color-primary); font-weight: 500; }
.empty-tip { background: #fff; border-radius: var(--radius-card); padding: 40px; text-align: center; color: var(--color-text-secondary); font-size: 14px; box-shadow: var(--shadow-card); }

/* ===== CTA ===== */
.cta-section { padding: clamp(3rem, 6vw, 5rem) 0; }
.cta-banner { background: var(--gradient-main); border-radius: 16px; padding: 48px; text-align: center; color: #fff; position: relative; overflow: hidden; }
.cta-banner::before { content: ''; position: absolute; top: -40px; right: -40px; width: 160px; height: 160px; border-radius: 50%; background: rgba(255,255,255,0.10); }
.cta-banner::after { content: ''; position: absolute; bottom: -60px; left: 20px; width: 200px; height: 200px; border-radius: 50%; background: rgba(15,169,88,0.18); }
.cta-banner h2 { position: relative; z-index: 2; font-size: clamp(1.5rem, 2.5vw, 2rem); font-weight: 700; margin-bottom: 12px; }
.cta-banner p { position: relative; z-index: 2; font-size: 15px; color: rgba(255,255,255,0.9); max-width: 560px; margin: 0 auto 24px; line-height: 1.7; }
.cta-btn { position: relative; z-index: 2; display: inline-flex; align-items: center; gap: 8px; background: #fff; color: var(--color-primary); font-size: 15px; font-weight: 600; padding: 12px 32px; border-radius: var(--radius-pill); border: none; transition: all .25s ease; box-shadow: 0 4px 16px rgba(0,0,0,0.12); }
.cta-btn:hover { transform: translateY(-2px); box-shadow: 0 8px 24px rgba(0,0,0,0.18); }
.cta-btn:focus-visible { outline: 2px solid var(--color-accent); outline-offset: 3px; }

/* ===== Footer ===== */
.site-footer { background: #fff; border-top: 1px solid var(--color-border); }
.footer-grid { display: grid; grid-template-columns: 2fr 1fr 1.2fr; gap: 40px; padding: 48px 0 32px; }
.footer-brand .brand { font-size: 18px; margin-bottom: 12px; }
.footer-brand p { font-size: 13px; color: var(--color-text-secondary); line-height: 1.7; max-width: 300px; }
.footer-col h4 { font-size: 14px; font-weight: 600; color: var(--color-primary); margin-bottom: 14px; }
.footer-col ul li { margin-bottom: 8px; }
.footer-col ul a { font-size: 14px; color: var(--color-text-secondary); transition: color .2s ease; }
.footer-col ul a:hover { color: var(--color-accent); }
.copyright { border-top: 1px solid var(--color-border); padding: 18px 0; text-align: center; font-size: 13px; color: var(--color-text-secondary); }
.copyright a { color: var(--color-primary); font-weight: 500; }

/* ===== Responsive ===== */
@media (max-width: 1024px) {
  .hero-inner { grid-template-columns: 1fr; gap: 32px; }
  .hero-visual { max-width: 480px; }
  .services-grid { grid-template-columns: 1fr 1fr; }
  .steps-grid { grid-template-columns: repeat(2, 1fr); }
  .steps-grid::before { display: none; }
  .footer-grid { grid-template-columns: 1fr 1fr; gap: 24px; }
}
@media (max-width: 768px) {
  .container { padding: 0 16px; }
  .site-nav { top: 8px; width: calc(100% - 24px); }
  .nav-toggle { display: flex; }
  .nav-menu { position: absolute; top: calc(100% + 8px); left: 0; width: 100%; background: rgba(255,255,255,0.96); backdrop-filter: blur(12px); border-radius: 16px; padding: 12px; flex-direction: column; align-items: stretch; gap: 4px; box-shadow: var(--shadow-nav); display: none; }
  .nav-menu.open { display: flex; }
  .nav-link { display: block; padding: 12px 16px; font-size: 15px; }
  .nav-link.active { background: rgba(28,78,128,0.10); color: var(--color-primary); }
  .hero { padding-top: 100px; }
  .hero-inner { padding: 32px 0; }
  .hero-visual-card img { height: 200px; }
  .hero-announce { border-radius: 16px; padding: 12px 16px; }
  .services-grid { grid-template-columns: 1fr; }
  .stats-grid { grid-template-columns: repeat(2, 1fr); gap: 16px; }
  .stat-item + .stat-item::before { display: none; }
  .stat-item:nth-child(3)::before { display: none; }
  .timeline-wrap { padding-left: 0; }
  .timeline-wrap::before { left: 8px; }
  .timeline-item { grid-template-columns: 20px 1fr; gap: 10px; }
  .timeline-dot { margin-left: 4px; }
  .steps-grid { grid-template-columns: 1fr; }
  .news-list { grid-template-columns: 1fr; }
  .news-thumb { flex-basis: 100px; }
  .footer-grid { grid-template-columns: 1fr; gap: 28px; }
  .cta-banner { padding: 32px 24px; }
}
@media (max-width: 520px) {
  .hero h1 { font-size: 1.7rem; }
  .hero-actions { flex-direction: column; align-items: stretch; }
  .btn-primary, .btn-secondary { width: 100%; }
  .news-card { flex-direction: column; }
  .news-thumb { flex-basis: auto; height: 120px; }
  .footer-grid { grid-template-columns: 1fr; }
  .cta-banner h2 { font-size: 1.3rem; }
}

/* ===== Keyframes ===== */
@keyframes fadeInUp { from { opacity: 0; transform: translateY(16px); } to { opacity: 1; transform: translateY(0); } }
.hero-content, .hero-visual { animation: fadeInUp .6s ease-out both; }
.hero-visual { animation-delay: .15s; }

/* roulang page: category1 */
/* ===== Reset & Base ===== */
*, *::before, *::after { box-sizing: border-box; margin: 0; padding: 0; }

html { scroll-behavior: smooth; }

body {
  font-family: "Noto Sans SC", "PingFang SC", "Microsoft YaHei", sans-serif;
  font-size: 0.9375rem;
  line-height: 1.7;
  color: #1F2A37;
  background: #F5F9FD;
  -webkit-font-smoothing: antialiased;
  padding-top: 76px;
}

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

a { color: inherit; text-decoration: none; }

ul, ol { list-style: none; }

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

input, textarea { font-family: inherit; }

:focus-visible {
  outline: 2px solid #0FA958;
  outline-offset: 2px;
}

/* ===== Design Tokens ===== */
:root {
  --color-bg: #F5F9FD;
  --color-bg-secondary: #EAF2F8;
  --color-bg-warm: #F7F3EB;
  --color-primary: #1C4E80;
  --color-primary-dark: #123A5E;
  --color-accent: #0FA958;
  --color-text: #1F2A37;
  --color-text-secondary: #576B7D;
  --color-border: #D8E2EC;
  --gradient-main: linear-gradient(135deg, #1C4E80 0%, #2E6FA3 60%, #0FA958 120%);
  --radius-card: 12px;
  --radius-pill: 999px;
  --radius-input: 6px;
  --shadow-card: 0 1px 3px rgba(28,78,128,0.08), 0 4px 12px rgba(28,78,128,0.06);
  --shadow-hover: 0 8px 24px rgba(28,78,128,0.12);
  --shadow-nav: 0 4px 16px rgba(28,78,128,0.10);
  --container-width: 1200px;
  --space-section: clamp(4rem, 8vw, 6rem);
}

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

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

/* ===== Navigation ===== */
.site-nav {
  position: fixed;
  top: 12px;
  left: 50%;
  transform: translateX(-50%);
  z-index: 1000;
  width: calc(100% - 32px);
  max-width: var(--container-width);
  background: rgba(255,255,255,0.82);
  backdrop-filter: saturate(180%) blur(12px);
  -webkit-backdrop-filter: saturate(180%) blur(12px);
  border: 1px solid rgba(255,255,255,0.9);
  border-radius: var(--radius-pill);
  box-shadow: var(--shadow-nav);
  transition: all 0.3s ease;
  padding: 8px 10px;
}

.site-nav.scrolled {
  width: calc(100% - 48px);
  padding: 6px 10px;
  box-shadow: 0 6px 24px rgba(28,78,128,0.14);
}

.nav-inner {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 16px;
}

.brand {
  display: inline-flex;
  align-items: center;
  gap: 10px;
  font-size: 1.125rem;
  font-weight: 700;
  color: var(--color-primary);
  background: none;
  padding: 0;
  border-radius: 0;
}

.brand-dot {
  width: 10px;
  height: 10px;
  border-radius: 50%;
  background: var(--color-accent);
  box-shadow: 0 0 0 3px rgba(15,169,88,0.15);
}

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

.nav-menu .nav-link {
  display: inline-block;
  padding: 8px 18px;
  border-radius: var(--radius-pill);
  font-size: 0.875rem;
  font-weight: 500;
  color: var(--color-text-secondary);
  transition: all 0.2s ease;
}

.nav-menu .nav-link:hover {
  color: var(--color-primary);
  background: var(--color-bg-secondary);
}

.nav-menu .nav-link.active {
  color: var(--color-primary);
  background: rgba(28,78,128,0.10);
  font-weight: 600;
}

.nav-toggle {
  display: none;
  flex-direction: column;
  justify-content: center;
  gap: 5px;
  width: 40px;
  height: 40px;
  padding: 8px;
  border-radius: var(--radius-pill);
  background: var(--color-bg-secondary);
}

.nav-toggle span {
  display: block;
  height: 2px;
  width: 100%;
  background: var(--color-primary);
  border-radius: 2px;
  transition: all 0.3s ease;
}

.nav-toggle.active span:nth-child(1) {
  transform: translateY(7px) rotate(45deg);
}

.nav-toggle.active span:nth-child(2) {
  opacity: 0;
}

.nav-toggle.active span:nth-child(3) {
  transform: translateY(-7px) rotate(-45deg);
}

/* ===== Buttons ===== */
.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 8px;
  padding: 12px 28px;
  border-radius: var(--radius-pill);
  font-size: 0.9375rem;
  font-weight: 600;
  line-height: 1.4;
  transition: all 0.25s ease;
  border: 1px solid transparent;
}

.btn-primary {
  background: var(--gradient-main);
  color: #fff;
  box-shadow: 0 4px 14px rgba(28,78,128,0.25);
}

.btn-primary:hover {
  transform: translateY(-2px);
  box-shadow: 0 8px 24px rgba(28,78,128,0.35);
  filter: brightness(1.05);
}

.btn-primary:active {
  transform: translateY(1px);
}

.btn-secondary {
  background: #fff;
  color: var(--color-primary);
  border-color: var(--color-border);
  box-shadow: var(--shadow-card);
}

.btn-secondary:hover {
  border-color: var(--color-primary);
  color: var(--color-primary-dark);
  transform: translateY(-2px);
  box-shadow: var(--shadow-hover);
}

.btn-secondary:active {
  transform: translateY(1px);
}

.btn-light {
  background: #fff;
  color: var(--color-primary);
  box-shadow: 0 4px 14px rgba(0,0,0,0.12);
}

.btn-light:hover {
  background: var(--color-bg-secondary);
  transform: translateY(-2px);
}

.btn-white {
  background: #fff;
  color: var(--color-primary);
  box-shadow: 0 4px 14px rgba(0,0,0,0.12);
}

.btn-white:hover {
  transform: translateY(-2px);
  box-shadow: 0 8px 24px rgba(0,0,0,0.18);
}

/* ===== Page Hero ===== */
.page-hero {
  position: relative;
  background-size: cover;
  background-position: center;
  padding: 90px 0 70px;
  overflow: hidden;
}

.hero-mask {
  position: absolute;
  inset: 0;
  background: linear-gradient(100deg, rgba(18,58,94,0.88) 0%, rgba(28,78,128,0.75) 60%, rgba(15,169,88,0.25) 100%);
}

.hero-content {
  position: relative;
  z-index: 2;
  max-width: 720px;
}

.breadcrumb {
  font-size: 0.8125rem;
  color: rgba(255,255,255,0.8);
  margin-bottom: 20px;
  display: flex;
  align-items: center;
  gap: 6px;
}

.breadcrumb a {
  color: rgba(255,255,255,0.8);
  transition: color 0.2s;
}

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

.breadcrumb-sep {
  opacity: 0.5;
}

.category-tag {
  display: inline-block;
  padding: 4px 14px;
  border-radius: var(--radius-pill);
  background: rgba(15,169,88,0.25);
  color: #E8F5EE;
  font-size: 0.8125rem;
  font-weight: 600;
  margin-bottom: 16px;
  letter-spacing: 0.02em;
}

.page-hero h1 {
  font-size: clamp(2.2rem, 4vw, 3rem);
  font-weight: 700;
  line-height: 1.2;
  color: #fff;
  margin-bottom: 16px;
  letter-spacing: -0.01em;
}

.page-hero p {
  font-size: 1.0625rem;
  line-height: 1.75;
  color: rgba(255,255,255,0.9);
  max-width: 620px;
  margin-bottom: 30px;
}

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

/* ===== Announcement Bar ===== */
.announcement-bar {
  background: var(--color-bg-warm);
  border-bottom: 1px solid var(--color-border);
  padding: 18px 0;
}

.announcement-inner {
  display: flex;
  align-items: center;
  gap: 20px;
  flex-wrap: wrap;
}

.announcement-tag {
  display: inline-flex;
  align-items: center;
  gap: 6px;
  padding: 6px 14px;
  border-radius: var(--radius-pill);
  background: var(--color-primary);
  color: #fff;
  font-size: 0.8125rem;
  font-weight: 600;
  white-space: nowrap;
}

.announcement-text {
  flex: 1;
  min-width: 260px;
}

.announcement-text h3 {
  font-size: 1rem;
  font-weight: 600;
  color: var(--color-primary);
  margin-bottom: 2px;
}

.announcement-text p {
  font-size: 0.875rem;
  color: var(--color-text-secondary);
}

/* ===== Category Layout ===== */
.category-layout {
  display: grid;
  grid-template-columns: 0.9fr 1.4fr;
  gap: 48px;
  align-items: start;
}

.category-intro h2 {
  font-size: clamp(1.6rem, 2.5vw, 2.1rem);
  font-weight: 650;
  color: var(--color-primary);
  line-height: 1.3;
  margin-bottom: 16px;
}

.category-intro p {
  color: var(--color-text-secondary);
  margin-bottom: 20px;
}

.intro-list {
  display: grid;
  gap: 12px;
}

.intro-list li {
  display: flex;
  align-items: flex-start;
  gap: 10px;
  font-size: 0.9375rem;
  color: var(--color-text);
}

.intro-list li::before {
  content: "";
  flex: 0 0 8px;
  width: 8px;
  height: 8px;
  border-radius: 50%;
  background: var(--color-accent);
  margin-top: 8px;
}

/* ===== News List ===== */
.news-list {
  display: grid;
  gap: 20px;
}

.news-card {
  display: flex;
  gap: 16px;
  background: #fff;
  border-radius: var(--radius-card);
  padding: 16px;
  box-shadow: var(--shadow-card);
  border: 1px solid rgba(216,226,236,0.6);
  transition: all 0.25s ease;
}

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

.news-card:hover .news-link {
  color: var(--color-primary);
}

.news-thumb {
  flex: 0 0 120px;
  width: 120px;
  height: 90px;
  border-radius: 8px;
  overflow: hidden;
  background: var(--color-bg-secondary);
}

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

.news-body {
  flex: 1;
  display: flex;
  flex-direction: column;
  gap: 6px;
  min-width: 0;
}

.news-meta {
  display: flex;
  align-items: center;
  gap: 10px;
}

.tag {
  display: inline-block;
  padding: 2px 10px;
  border-radius: var(--radius-pill);
  background: rgba(15,169,88,0.12);
  color: var(--color-accent);
  font-size: 0.75rem;
  font-weight: 600;
}

.news-meta time {
  font-size: 0.75rem;
  color: var(--color-text-secondary);
}

.news-body h3 {
  font-size: 1.0625rem;
  font-weight: 600;
  line-height: 1.4;
  color: var(--color-text);
  display: -webkit-box;
  -webkit-line-clamp: 2;
  -webkit-box-orient: vertical;
  overflow: hidden;
}

.news-body p {
  font-size: 0.875rem;
  color: var(--color-text-secondary);
  display: -webkit-box;
  -webkit-line-clamp: 2;
  -webkit-box-orient: vertical;
  overflow: hidden;
}

.news-link {
  font-size: 0.8125rem;
  font-weight: 600;
  color: var(--color-accent);
  transition: color 0.2s;
  display: inline-flex;
  align-items: center;
  gap: 4px;
}

.news-link::after {
  content: "→";
  transition: transform 0.2s;
}

.news-card:hover .news-link::after {
  transform: translateX(4px);
}

/* ===== Value Section ===== */
.value-section {
  background: var(--color-bg-warm);
}

.value-section h2 {
  font-size: clamp(1.6rem, 2.5vw, 2.1rem);
  font-weight: 650;
  color: var(--color-primary);
  line-height: 1.3;
  text-align: center;
  margin-bottom: 12px;
}

.value-section .section-lead {
  text-align: center;
  color: var(--color-text-secondary);
  max-width: 640px;
  margin: 0 auto 40px;
}

.value-grid {
  display: grid;
  grid-template-columns: 1.2fr 1fr 1fr;
  gap: 24px;
  margin-bottom: 40px;
}

.value-card {
  background: #fff;
  border-radius: var(--radius-card);
  padding: 28px;
  box-shadow: var(--shadow-card);
  border: 1px solid rgba(216,226,236,0.6);
  transition: all 0.25s ease;
}

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

.value-card.large {
  grid-row: span 2;
  display: flex;
  flex-direction: column;
  justify-content: center;
}

.value-card .value-icon {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  width: 44px;
  height: 44px;
  border-radius: 10px;
  background: rgba(15,169,88,0.12);
  color: var(--color-accent);
  margin-bottom: 16px;
}

.value-card h3 {
  font-size: 1.0625rem;
  font-weight: 600;
  color: var(--color-text);
  margin-bottom: 8px;
}

.value-card p {
  font-size: 0.875rem;
  color: var(--color-text-secondary);
}

.value-stats {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 24px;
  border-top: 1px solid var(--color-border);
  padding-top: 32px;
}

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

.stat-item .stat-num {
  font-family: "Inter", "Roboto", sans-serif;
  font-size: 2rem;
  font-weight: 700;
  color: var(--color-accent);
  line-height: 1.2;
}

.stat-item .stat-label {
  font-size: 0.8125rem;
  color: var(--color-text-secondary);
  margin-top: 4px;
}

/* ===== Steps Section ===== */
.steps-section h2 {
  font-size: clamp(1.6rem, 2.5vw, 2.1rem);
  font-weight: 650;
  color: var(--color-primary);
  line-height: 1.3;
  text-align: center;
  margin-bottom: 12px;
}

.steps-section .section-lead {
  text-align: center;
  color: var(--color-text-secondary);
  max-width: 640px;
  margin: 0 auto 44px;
}

.steps-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 32px;
  position: relative;
}

.steps-grid::before {
  content: "";
  position: absolute;
  top: 28px;
  left: 12%;
  right: 12%;
  height: 2px;
  border-top: 2px dashed var(--color-border);
  z-index: 0;
}

.step-item {
  position: relative;
  z-index: 1;
  text-align: center;
  padding: 0 8px;
}

.step-num {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  width: 56px;
  height: 56px;
  border-radius: 50%;
  background: #fff;
  border: 2px solid var(--color-accent);
  color: var(--color-primary);
  font-family: "Inter", "Roboto", sans-serif;
  font-size: 1.25rem;
  font-weight: 700;
  margin-bottom: 16px;
}

.step-item h3 {
  font-size: 1.0625rem;
  font-weight: 600;
  color: var(--color-text);
  margin-bottom: 8px;
}

.step-item p {
  font-size: 0.875rem;
  color: var(--color-text-secondary);
}

/* ===== FAQ Section ===== */
.faq-section {
  background: var(--color-bg-secondary);
}

.faq-section h2 {
  font-size: clamp(1.6rem, 2.5vw, 2.1rem);
  font-weight: 650;
  color: var(--color-primary);
  line-height: 1.3;
  text-align: center;
  margin-bottom: 12px;
}

.faq-section .section-lead {
  text-align: center;
  color: var(--color-text-secondary);
  max-width: 640px;
  margin: 0 auto 40px;
}

.faq-list {
  max-width: 860px;
  margin: 0 auto;
}

.faq-item {
  background: #fff;
  border-radius: var(--radius-card);
  margin-bottom: 14px;
  box-shadow: var(--shadow-card);
  overflow: hidden;
  transition: box-shadow 0.25s ease;
}

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

.faq-question {
  width: 100%;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 16px;
  padding: 20px 24px;
  font-size: 1rem;
  font-weight: 600;
  color: var(--color-text);
  text-align: left;
  transition: background 0.2s;
}

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

.faq-icon {
  position: relative;
  flex: 0 0 24px;
  width: 24px;
  height: 24px;
}

.faq-icon::before,
.faq-icon::after {
  content: "";
  position: absolute;
  background: var(--color-accent);
  border-radius: 2px;
  transition: all 0.3s ease;
}

.faq-icon::before {
  top: 11px;
  left: 4px;
  width: 16px;
  height: 2px;
}

.faq-icon::after {
  top: 4px;
  left: 11px;
  width: 2px;
  height: 16px;
}

.faq-item.open .faq-icon::after {
  transform: scaleY(0);
}

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

.faq-item.open .faq-answer {
  max-height: 400px;
}

.faq-answer p {
  padding: 0 24px 20px;
  font-size: 0.9375rem;
  color: var(--color-text-secondary);
  background: var(--color-bg);
  border-top: 1px solid var(--color-border);
  padding-top: 16px;
  margin-top: 0;
  text-indent: 1em;
}

/* ===== CTA Banner ===== */
.cta-banner {
  padding: var(--space-section) 0;
}

.cta-inner {
  background: var(--gradient-main);
  border-radius: 16px;
  padding: 48px;
  text-align: center;
  color: #fff;
  position: relative;
  overflow: hidden;
}

.cta-inner h2 {
  font-size: clamp(1.6rem, 2.5vw, 2.1rem);
  font-weight: 650;
  line-height: 1.3;
  margin-bottom: 12px;
}

.cta-inner p {
  font-size: 1rem;
  color: rgba(255,255,255,0.9);
  max-width: 560px;
  margin: 0 auto 28px;
}

/* ===== Footer ===== */
.site-footer {
  background: var(--color-primary-dark);
  color: rgba(255,255,255,0.85);
  padding: 60px 0 24px;
}

.site-footer .brand {
  color: #fff;
  margin-bottom: 12px;
}

.footer-grid {
  display: grid;
  grid-template-columns: 1.5fr 1fr 1fr;
  gap: 48px;
  margin-bottom: 40px;
}

.footer-brand p {
  font-size: 0.875rem;
  color: rgba(255,255,255,0.7);
  max-width: 340px;
  line-height: 1.7;
}

.footer-col h4 {
  font-size: 0.9375rem;
  font-weight: 600;
  color: #fff;
  margin-bottom: 14px;
}

.footer-col ul {
  display: grid;
  gap: 8px;
}

.footer-col a {
  font-size: 0.875rem;
  color: rgba(255,255,255,0.7);
  transition: color 0.2s;
}

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

.copyright {
  border-top: 1px solid rgba(255,255,255,0.12);
  padding-top: 24px;
  font-size: 0.8125rem;
  color: rgba(255,255,255,0.55);
  text-align: center;
}

.copyright a {
  color: rgba(255,255,255,0.7);
}

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

/* ===== Responsive ===== */
@media (max-width: 1024px) {
  .category-layout {
    grid-template-columns: 1fr;
    gap: 32px;
  }

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

  .value-card.large {
    grid-column: span 2;
    grid-row: auto;
  }

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

@media (max-width: 768px) {
  body {
    padding-top: 70px;
  }

  .site-nav {
    top: 8px;
    width: calc(100% - 24px);
    padding: 8px 8px;
  }

  .site-nav.scrolled {
    width: calc(100% - 24px);
  }

  .nav-toggle {
    display: flex;
  }

  .nav-menu {
    position: absolute;
    top: calc(100% + 8px);
    left: 0;
    right: 0;
    flex-direction: column;
    align-items: stretch;
    gap: 4px;
    background: rgba(255,255,255,0.95);
    backdrop-filter: blur(12px);
    -webkit-backdrop-filter: blur(12px);
    border-radius: 16px;
    padding: 12px;
    box-shadow: var(--shadow-nav);
    border: 1px solid var(--color-border);
    opacity: 0;
    visibility: hidden;
    transform: translateY(-8px);
    transition: all 0.25s ease;
  }

  .nav-menu.open {
    opacity: 1;
    visibility: visible;
    transform: translateY(0);
  }

  .nav-menu .nav-link {
    padding: 12px 16px;
    text-align: center;
  }

  .page-hero {
    padding: 70px 0 50px;
  }

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

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

  .announcement-inner {
    flex-direction: column;
    align-items: flex-start;
  }

  .announcement-text {
    min-width: 0;
  }

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

  .value-card.large {
    grid-column: auto;
  }

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

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

  .steps-grid::before {
    display: none;
  }

  .cta-inner {
    padding: 24px;
  }

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

  .news-card {
    flex-direction: column;
  }

  .news-thumb {
    flex: 0 0 140px;
    width: 100%;
    height: 140px;
  }
}

@media (max-width: 520px) {
  .container {
    padding-left: 16px;
    padding-right: 16px;
  }

  .brand {
    font-size: 1rem;
  }

  .value-card {
    padding: 20px;
  }

  .step-item {
    padding: 0;
  }

  .faq-question {
    padding: 16px 16px;
  }

  .faq-answer p {
    padding-left: 16px;
    padding-right: 16px;
  }

  .cta-inner {
    padding: 24px 16px;
  }

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

/* roulang page: article */
:root {
        --color-bg: #F5F9FD;
        --color-bg-secondary: #EAF2F8;
        --color-bg-warm: #F7F3EB;
        --color-primary: #1C4E80;
        --color-primary-dark: #123A5E;
        --color-accent: #0FA958;
        --color-text: #1F2A37;
        --color-text-secondary: #576B7D;
        --color-border: #D8E2EC;
        --gradient-main: linear-gradient(135deg, #1C4E80 0%, #2E6FA3 60%, #0FA958 120%);
        --radius-card: 12px;
        --radius-pill: 999px;
        --radius-input: 6px;
        --shadow-card: 0 1px 3px rgba(28,78,128,0.08), 0 4px 12px rgba(28,78,128,0.06);
        --shadow-card-hover: 0 8px 24px rgba(28,78,128,0.12);
        --shadow-nav: 0 4px 16px rgba(28,78,128,0.10);
        --font-sans: "Noto Sans SC", "PingFang SC", "Microsoft YaHei", sans-serif;
        --font-num: "Inter", "Roboto", sans-serif;
    }
    *,
    *::before,
    *::after {
        box-sizing: border-box;
        margin: 0;
        padding: 0;
    }
    html {
        scroll-behavior: smooth;
    }
    body {
        font-family: var(--font-sans);
        background: var(--color-bg);
        color: var(--color-text);
        line-height: 1.7;
        -webkit-font-smoothing: antialiased;
    }
    img {
        max-width: 100%;
        display: block;
    }
    a {
        color: var(--color-primary);
        text-decoration: none;
        transition: color 0.2s ease;
    }
    a:hover {
        color: var(--color-accent);
    }
    ul,
    ol {
        list-style-position: inside;
    }
    button {
        font-family: var(--font-sans);
        border: none;
        background: none;
        cursor: pointer;
    }
    .container {
        max-width: 1200px;
        margin: 0 auto;
        padding: 0 24px;
    }
    .btn {
        display: inline-flex;
        align-items: center;
        justify-content: center;
        gap: 8px;
        padding: 0.75rem 1.75rem;
        border-radius: var(--radius-pill);
        font-size: 0.9375rem;
        font-weight: 600;
        text-decoration: none;
        transition: all 0.3s ease;
        border: none;
        cursor: pointer;
        line-height: 1.4;
    }
    .btn-primary {
        background: var(--gradient-main);
        color: #fff;
        box-shadow: 0 4px 14px rgba(28, 78, 128, 0.25);
    }
    .btn-primary:hover {
        color: #fff;
        transform: translateY(-2px);
        box-shadow: 0 6px 22px rgba(28, 78, 128, 0.35);
        filter: brightness(1.05);
    }
    .btn-primary:active {
        transform: translateY(-1px);
        box-shadow: 0 4px 14px rgba(28, 78, 128, 0.25);
    }
    .btn-primary:focus-visible,
    .btn-secondary:focus-visible {
        outline: 2px solid var(--color-accent);
        outline-offset: 3px;
    }
    .btn-secondary {
        background: #fff;
        color: var(--color-primary);
        border: 1px solid var(--color-border);
    }
    .btn-secondary:hover {
        border-color: var(--color-primary);
        background: var(--color-bg-secondary);
        color: var(--color-primary-dark);
        transform: translateY(-2px);
    }
    .btn-secondary:active {
        transform: translateY(-1px);
    }
    .site-nav {
        position: fixed;
        top: 12px;
        left: 50%;
        transform: translateX(-50%);
        z-index: 1000;
        width: calc(100% - 48px);
        max-width: 1200px;
        background: rgba(255, 255, 255, 0.82);
        backdrop-filter: saturate(180%) blur(12px);
        -webkit-backdrop-filter: saturate(180%) blur(12px);
        border: 1px solid rgba(255, 255, 255, 0.9);
        border-radius: var(--radius-pill);
        padding: 10px 16px;
        box-shadow: var(--shadow-nav);
        transition: all 0.3s ease;
    }
    .site-nav.scrolled {
        max-width: 1000px;
        padding: 8px 14px;
        background: rgba(255, 255, 255, 0.92);
    }
    .nav-inner {
        display: flex;
        align-items: center;
        justify-content: space-between;
        gap: 20px;
    }
    .brand {
        display: inline-flex;
        align-items: center;
        gap: 8px;
        font-size: 1.05rem;
        font-weight: 700;
        color: var(--color-primary);
        white-space: nowrap;
        text-decoration: none;
    }
    .brand .brand-dot {
        width: 10px;
        height: 10px;
        border-radius: 50%;
        background: var(--color-accent);
        box-shadow: 0 0 0 4px rgba(15, 169, 88, 0.15);
        flex-shrink: 0;
    }
    .brand:hover {
        color: var(--color-primary-dark);
    }
    .nav-menu {
        display: flex;
        align-items: center;
        gap: 4px;
    }
    .nav-link {
        display: inline-block;
        padding: 8px 18px;
        border-radius: var(--radius-pill);
        font-size: 0.9rem;
        font-weight: 500;
        color: var(--color-text);
        transition: all 0.25s ease;
        text-decoration: none;
    }
    .nav-link:hover {
        color: var(--color-primary);
        background: var(--color-bg-secondary);
    }
    .nav-link.active {
        background: var(--color-primary);
        color: #fff;
        font-weight: 600;
    }
    .nav-link.active:hover {
        color: #fff;
        background: var(--color-primary-dark);
    }
    .nav-toggle {
        display: none;
        flex-direction: column;
        justify-content: center;
        gap: 5px;
        width: 40px;
        height: 40px;
        border-radius: 50%;
        background: var(--color-bg-secondary);
        padding: 10px;
        transition: background 0.3s ease;
    }
    .nav-toggle span {
        display: block;
        height: 2px;
        width: 100%;
        background: var(--color-primary);
        border-radius: 2px;
        transition: all 0.3s ease;
    }
    .nav-toggle.active span:nth-child(1) {
        transform: translateY(7px) rotate(45deg);
    }
    .nav-toggle.active span:nth-child(2) {
        opacity: 0;
    }
    .nav-toggle.active span:nth-child(3) {
        transform: translateY(-7px) rotate(-45deg);
    }
    .article-main {
        padding-top: 110px;
        min-height: 70vh;
    }
    .article-hero {
        position: relative;
        border-radius: 16px;
        overflow: hidden;
        background: linear-gradient(135deg, rgba(28, 78, 128, 0.93) 0%, rgba(46, 111, 163, 0.85) 60%, rgba(15, 169, 88, 0.45) 120%), url('/assets/images/backpic/back-1.webp') center/cover no-repeat;
        padding: clamp(2rem, 5vw, 3.5rem) clamp(1.5rem, 4vw, 3.5rem);
        color: #fff;
        margin-bottom: 2.5rem;
        box-shadow: var(--shadow-card);
    }
    .breadcrumb {
        display: flex;
        flex-wrap: wrap;
        align-items: center;
        gap: 8px;
        font-size: 0.8125rem;
        margin-bottom: 1.5rem;
        color: rgba(255, 255, 255, 0.75);
    }
    .breadcrumb a {
        color: rgba(255, 255, 255, 0.85);
        text-decoration: none;
        transition: color 0.2s ease;
    }
    .breadcrumb a:hover {
        color: #fff;
        text-decoration: underline;
    }
    .breadcrumb .sep {
        opacity: 0.6;
    }
    .breadcrumb .current {
        color: rgba(255, 255, 255, 0.9);
        overflow: hidden;
        text-overflow: ellipsis;
        white-space: nowrap;
        max-width: 260px;
    }
    .article-tag {
        display: inline-flex;
        align-items: center;
        gap: 6px;
        background: rgba(255, 255, 255, 0.18);
        border: 1px solid rgba(255, 255, 255, 0.25);
        color: #fff;
        font-size: 0.8125rem;
        font-weight: 500;
        padding: 5px 16px;
        border-radius: var(--radius-pill);
        margin-bottom: 1rem;
        backdrop-filter: blur(4px);
        -webkit-backdrop-filter: blur(4px);
    }
    .article-tag::before {
        content: '';
        width: 6px;
        height: 6px;
        border-radius: 50%;
        background: var(--color-accent);
        flex-shrink: 0;
    }
    .article-hero h1 {
        font-size: clamp(1.8rem, 3.5vw, 2.6rem);
        font-weight: 700;
        line-height: 1.25;
        margin-bottom: 1rem;
        max-width: 800px;
    }
    .article-meta {
        display: flex;
        flex-wrap: wrap;
        align-items: center;
        gap: 16px;
        font-size: 0.8125rem;
        color: rgba(255, 255, 255, 0.75);
        margin-bottom: 1.25rem;
    }
    .article-meta .meta-item {
        display: inline-flex;
        align-items: center;
        gap: 6px;
    }
    .article-excerpt {
        font-size: 0.9375rem;
        line-height: 1.7;
        color: rgba(255, 255, 255, 0.9);
        max-width: 720px;
        margin: 0;
    }
    .article-body {
        max-width: 760px;
        margin: 0 auto;
        background: #fff;
        border-radius: 16px;
        box-shadow: var(--shadow-card);
        padding: clamp(1.75rem, 5vw, 3.5rem);
        font-size: 0.9375rem;
        line-height: 1.85;
        color: var(--color-text);
    }
    .article-body> :first-child {
        margin-top: 0;
    }
    .article-body> :last-child {
        margin-bottom: 0;
    }
    .article-body h2 {
        font-size: 1.5rem;
        font-weight: 650;
        margin: 2.5rem 0 1rem;
        color: var(--color-primary);
        line-height: 1.35;
        padding-bottom: 0.5rem;
        border-bottom: 2px solid var(--color-bg-secondary);
    }
    .article-body h3 {
        font-size: 1.125rem;
        font-weight: 600;
        margin: 2rem 0 0.75rem;
        color: var(--color-primary);
    }
    .article-body h4 {
        font-size: 1rem;
        font-weight: 600;
        margin: 1.5rem 0 0.5rem;
        color: var(--color-primary);
    }
    .article-body p {
        margin-bottom: 1.5rem;
    }
    .article-body a {
        color: var(--color-primary);
        text-decoration: underline;
        text-underline-offset: 3px;
        text-decoration-color: var(--color-border);
        transition: all 0.2s ease;
    }
    .article-body a:hover {
        color: var(--color-accent);
        text-decoration-color: var(--color-accent);
    }
    .article-body img {
        max-width: 100%;
        height: auto;
        border-radius: 8px;
        margin: 1.5rem 0;
        box-shadow: var(--shadow-card);
    }
    .article-body ul,
    .article-body ol {
        margin: 0 0 1.5rem 1.25rem;
        padding-left: 0.5rem;
    }
    .article-body li {
        margin-bottom: 0.5rem;
        line-height: 1.7;
    }
    .article-body blockquote {
        border-left: 4px solid var(--color-accent);
        background: var(--color-bg-secondary);
        padding: 1rem 1.5rem;
        border-radius: 0 8px 8px 0;
        margin: 2rem 0;
        color: var(--color-text-secondary);
        font-style: normal;
    }
    .article-body blockquote p {
        margin-bottom: 0.5rem;
    }
    .article-body blockquote p:last-child {
        margin-bottom: 0;
    }
    .article-body table {
        width: 100%;
        border-collapse: collapse;
        margin: 1.5rem 0;
        font-size: 0.875rem;
    }
    .article-body th,
    .article-body td {
        border: 1px solid var(--color-border);
        padding: 0.75rem 1rem;
        text-align: left;
    }
    .article-body th {
        background: var(--color-bg-secondary);
        font-weight: 600;
        color: var(--color-primary);
    }
    .article-body hr {
        border: none;
        border-top: 1px solid var(--color-border);
        margin: 2.5rem 0;
    }
    .post-nav {
        display: grid;
        grid-template-columns: 1fr 1fr;
        gap: 16px;
        max-width: 760px;
        margin: 2.5rem auto;
    }
    .post-nav-link {
        display: block;
        background: #fff;
        border: 1px solid var(--color-border);
        border-radius: var(--radius-card);
        padding: 1.25rem 1.5rem;
        text-decoration: none;
        color: var(--color-text);
        transition: all 0.3s ease;
    }
    .post-nav-link:hover {
        border-color: var(--color-primary);
        box-shadow: var(--shadow-card-hover);
        transform: translateY(-2px);
        color: var(--color-text);
    }
    .post-nav-link .nav-label {
        display: block;
        font-size: 0.75rem;
        color: var(--color-text-secondary);
        margin-bottom: 0.35rem;
        font-weight: 500;
    }
    .post-nav-link .nav-title {
        display: block;
        font-size: 0.9375rem;
        font-weight: 600;
        color: var(--color-primary);
        overflow: hidden;
        text-overflow: ellipsis;
        white-space: nowrap;
    }
    .post-nav-link.next {
        text-align: right;
    }
    .related-section {
        max-width: 760px;
        margin: 3rem auto 2rem;
    }
    .related-section h2 {
        font-size: 1.25rem;
        font-weight: 650;
        color: var(--color-primary);
        margin-bottom: 1.5rem;
        position: relative;
        padding-left: 16px;
    }
    .related-section h2::before {
        content: '';
        position: absolute;
        left: 0;
        top: 50%;
        transform: translateY(-50%);
        width: 5px;
        height: 22px;
        border-radius: 3px;
        background: var(--color-accent);
    }
    .related-grid {
        display: grid;
        grid-template-columns: repeat(3, 1fr);
        gap: 20px;
    }
    .related-card {
        background: #fff;
        border-radius: var(--radius-card);
        overflow: hidden;
        box-shadow: var(--shadow-card);
        text-decoration: none;
        color: var(--color-text);
        transition: all 0.3s ease;
        display: flex;
        flex-direction: column;
    }
    .related-card:hover {
        transform: translateY(-4px);
        box-shadow: var(--shadow-card-hover);
        color: var(--color-text);
    }
    .related-card .cover {
        width: 100%;
        height: 130px;
        object-fit: cover;
        display: block;
        background: var(--color-bg-secondary);
    }
    .related-card .card-body {
        padding: 1rem 1.1rem 1.1rem;
        display: flex;
        flex-direction: column;
        gap: 6px;
        flex: 1;
    }
    .related-card h3 {
        font-size: 0.9375rem;
        font-weight: 600;
        color: var(--color-text);
        line-height: 1.45;
        margin: 0;
    }
    .related-card p {
        font-size: 0.8125rem;
        color: var(--color-text-secondary);
        line-height: 1.6;
        margin: 0;
        flex: 1;
    }
    .related-card .card-link {
        font-size: 0.8125rem;
        font-weight: 600;
        color: var(--color-primary);
        display: inline-flex;
        align-items: center;
        gap: 4px;
        transition: all 0.2s ease;
    }
    .related-card .card-link::after {
        content: '→';
        transition: transform 0.2s ease;
    }
    .related-card:hover .card-link::after {
        transform: translateX(4px);
    }
    .article-back {
        max-width: 760px;
        margin: 2rem auto 3rem;
        text-align: center;
    }
    .not-found {
        text-align: center;
        padding: clamp(3rem, 6vw, 5rem) 1.5rem;
        background: #fff;
        border-radius: 16px;
        box-shadow: var(--shadow-card);
        max-width: 640px;
        margin: 2rem auto 3rem;
    }
    .not-found h1 {
        font-size: 2rem;
        color: var(--color-primary);
        margin-bottom: 1rem;
    }
    .not-found p {
        color: var(--color-text-secondary);
        margin-bottom: 2rem;
    }
    .site-footer {
        background: #fff;
        border-top: 1px solid var(--color-border);
        padding: clamp(3rem, 6vw, 4.5rem) 0 0;
        margin-top: 4rem;
    }
    .footer-grid {
        display: grid;
        grid-template-columns: 2fr 1fr 1fr;
        gap: 40px;
        padding-bottom: 2.5rem;
    }
    .footer-brand .brand {
        font-size: 1.1rem;
        margin-bottom: 12px;
        display: inline-flex;
    }
    .footer-brand p {
        font-size: 0.875rem;
        color: var(--color-text-secondary);
        line-height: 1.7;
        max-width: 320px;
        margin-top: 12px;
    }
    .footer-col h4 {
        font-size: 0.9375rem;
        font-weight: 600;
        color: var(--color-primary);
        margin-bottom: 1rem;
    }
    .footer-col ul {
        list-style: none;
        padding: 0;
    }
    .footer-col li {
        margin-bottom: 0.6rem;
    }
    .footer-col a {
        font-size: 0.875rem;
        color: var(--color-text-secondary);
        text-decoration: none;
        transition: all 0.2s ease;
    }
    .footer-col a:hover {
        color: var(--color-primary);
        padding-left: 4px;
    }
    .copyright {
        border-top: 1px solid var(--color-border);
        padding: 1.25rem 0;
        font-size: 0.8125rem;
        color: var(--color-text-secondary);
        text-align: center;
    }
    .copyright a {
        color: var(--color-text-secondary);
        text-decoration: none;
    }
    .copyright a:hover {
        color: var(--color-primary);
    }

    @media (max-width: 1023px) {
        .related-grid {
            grid-template-columns: repeat(2, 1fr);
        }
        .footer-grid {
            grid-template-columns: 1fr 1fr;
        }
    }

    @media (max-width: 767px) {
        .container {
            padding: 0 16px;
        }
        .site-nav {
            width: calc(100% - 32px);
            padding: 8px 12px;
            top: 8px;
        }
        .nav-menu {
            position: absolute;
            top: calc(100% + 8px);
            left: 0;
            right: 0;
            flex-direction: column;
            align-items: stretch;
            background: rgba(255, 255, 255, 0.96);
            backdrop-filter: saturate(180%) blur(12px);
            -webkit-backdrop-filter: saturate(180%) blur(12px);
            border-radius: 16px;
            box-shadow: var(--shadow-nav);
            padding: 12px;
            gap: 8px;
            display: none;
        }
        .nav-menu.open {
            display: flex;
        }
        .nav-link {
            padding: 12px 16px;
            text-align: center;
            font-size: 0.9375rem;
        }
        .nav-toggle {
            display: flex;
        }
        .article-main {
            padding-top: 80px;
        }
        .article-hero {
            padding: 1.75rem 1.25rem;
            margin-bottom: 1.5rem;
        }
        .article-hero h1 {
            font-size: 1.5rem;
        }
        .article-body {
            padding: 1.5rem 1.25rem;
            font-size: 0.9375rem;
        }
        .post-nav {
            grid-template-columns: 1fr;
        }
        .post-nav-link.next {
            text-align: left;
        }
        .related-grid {
            grid-template-columns: 1fr;
        }
        .related-card .cover {
            height: 160px;
        }
        .footer-grid {
            grid-template-columns: 1fr;
            gap: 32px;
        }
        .footer-brand p {
            max-width: 100%;
        }
        .btn {
            padding: 0.65rem 1.4rem;
            font-size: 0.875rem;
        }
    }

/* roulang page: category2 */
:root {
    --color-bg: #F5F9FD;
    --color-bg-secondary: #EAF2F8;
    --color-bg-warm: #F7F3EB;
    --color-primary: #1C4E80;
    --color-primary-dark: #123A5E;
    --color-accent: #0FA958;
    --color-text: #1F2A37;
    --color-text-secondary: #576B7D;
    --color-border: #D8E2EC;
    --color-danger: #D14343;
    --gradient-main: linear-gradient(135deg, #1C4E80 0%, #2E6FA3 60%, #0FA958 120%);
    --radius-lg: 12px;
    --radius-pill: 999px;
    --radius-sm: 6px;
    --shadow-card: 0 1px 3px rgba(28,78,128,0.08), 0 4px 12px rgba(28,78,128,0.06);
    --shadow-hover: 0 8px 24px rgba(28,78,128,0.12);
    --shadow-nav: 0 4px 16px rgba(28,78,128,0.10);
    --max-width: 1200px;
    --space-section: clamp(4rem, 8vw, 6rem);
    --font-sans: "Noto Sans SC", "PingFang SC", "Microsoft YaHei", sans-serif;
    --font-num: "Inter", "Roboto", sans-serif;
  }

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

  html {
    scroll-behavior: smooth;
  }

  body {
    font-family: var(--font-sans);
    background: var(--color-bg);
    color: var(--color-text);
    font-size: 0.9375rem;
    line-height: 1.7;
    -webkit-font-smoothing: antialiased;
  }

  a {
    color: var(--color-primary);
    text-decoration: none;
    transition: color 0.2s ease;
  }

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

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

  ul,
  ol {
    list-style: none;
  }

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

  input {
    font-family: inherit;
  }

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

  /* ===== 导航 ===== */
  .site-nav {
    position: fixed;
    top: 12px;
    left: 50%;
    transform: translateX(-50%);
    z-index: 1000;
    width: calc(100% - 48px);
    max-width: 1180px;
    background: rgba(255, 255, 255, 0.82);
    backdrop-filter: saturate(180%) blur(12px);
    -webkit-backdrop-filter: saturate(180%) blur(12px);
    border-radius: var(--radius-pill);
    border: 1px solid rgba(255, 255, 255, 0.9);
    box-shadow: var(--shadow-nav);
    transition: all 0.35s ease;
  }

  .site-nav.scrolled {
    top: 8px;
    width: calc(100% - 56px);
    max-width: 1160px;
    background: rgba(255, 255, 255, 0.92);
    box-shadow: 0 6px 20px rgba(28, 78, 128, 0.12);
  }

  .nav-inner {
    display: flex;
    align-items: center;
    justify-content: space-between;
    padding: 10px 16px;
  }

  .brand {
    display: inline-flex;
    align-items: center;
    gap: 8px;
    font-size: 1.05rem;
    font-weight: 700;
    color: var(--color-primary);
    letter-spacing: 0.01em;
    white-space: nowrap;
  }

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

  .brand-dot {
    width: 10px;
    height: 10px;
    border-radius: 50%;
    background: var(--color-accent);
    box-shadow: 0 0 0 4px rgba(15, 169, 88, 0.15);
    flex-shrink: 0;
  }

  .nav-menu {
    display: flex;
    align-items: center;
    gap: 4px;
  }

  .nav-link {
    display: inline-block;
    padding: 8px 18px;
    border-radius: var(--radius-pill);
    font-size: 0.875rem;
    font-weight: 500;
    color: var(--color-text-secondary);
    transition: all 0.2s ease;
    line-height: 1.4;
  }

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

  .nav-link.active {
    color: #fff;
    background: var(--color-primary);
    font-weight: 600;
    box-shadow: 0 2px 8px rgba(28, 78, 128, 0.2);
  }

  .nav-toggle {
    display: none;
    flex-direction: column;
    gap: 5px;
    padding: 8px;
    border-radius: var(--radius-pill);
    background: var(--color-bg-secondary);
    transition: background 0.2s ease;
  }

  .nav-toggle span {
    display: block;
    width: 20px;
    height: 2px;
    background: var(--color-primary);
    border-radius: 2px;
    transition: transform 0.3s ease, opacity 0.3s ease;
  }

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

  .nav-toggle.open span:nth-child(1) {
    transform: translateY(7px) rotate(45deg);
  }

  .nav-toggle.open span:nth-child(2) {
    opacity: 0;
  }

  .nav-toggle.open span:nth-child(3) {
    transform: translateY(-7px) rotate(-45deg);
  }

  /* ===== 页面 Hero ===== */
  .page-hero {
    position: relative;
    padding: 150px 0 60px;
    background: linear-gradient(180deg, var(--color-bg-secondary) 0%, var(--color-bg) 100%);
    overflow: hidden;
  }

  .page-hero .hero-bg {
    position: absolute;
    inset: 0;
    background-image: url('/assets/images/backpic/back-2.png');
    background-size: cover;
    background-position: center;
    opacity: 0.18;
  }

  .page-hero .hero-overlay {
    position: absolute;
    inset: 0;
    background: linear-gradient(180deg, rgba(28, 78, 128, 0.25) 0%, rgba(245, 249, 253, 0.9) 100%);
  }

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

  .hero-tag {
    display: inline-flex;
    align-items: center;
    gap: 8px;
    padding: 6px 16px;
    background: rgba(255, 255, 255, 0.75);
    border-radius: var(--radius-pill);
    font-size: 0.8125rem;
    font-weight: 600;
    color: var(--color-primary);
    backdrop-filter: blur(6px);
    border: 1px solid rgba(255, 255, 255, 0.9);
    margin-bottom: 20px;
    box-shadow: var(--shadow-card);
  }

  .hero-tag::before {
    content: '';
    width: 8px;
    height: 8px;
    border-radius: 50%;
    background: var(--color-accent);
    flex-shrink: 0;
  }

  .page-hero h1 {
    font-size: clamp(2.2rem, 4vw, 3rem);
    font-weight: 700;
    line-height: 1.2;
    color: var(--color-primary);
    margin-bottom: 16px;
    letter-spacing: -0.01em;
  }

  .page-hero p {
    max-width: 640px;
    font-size: 1.0625rem;
    color: var(--color-text-secondary);
    line-height: 1.75;
  }

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

  .hero-meta .meta-item {
    display: inline-flex;
    align-items: center;
    gap: 8px;
    padding: 8px 16px;
    background: rgba(255, 255, 255, 0.7);
    border: 1px solid var(--color-border);
    border-radius: var(--radius-pill);
    font-size: 0.8125rem;
    color: var(--color-text-secondary);
  }

  .hero-meta i {
    color: var(--color-accent);
    font-size: 0.9375rem;
  }

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

  .section-head {
    display: flex;
    align-items: flex-end;
    justify-content: space-between;
    gap: 24px;
    margin-bottom: 40px;
  }

  .section-head .kicker {
    font-size: 0.8125rem;
    font-weight: 600;
    color: var(--color-accent);
    letter-spacing: 0.06em;
    text-transform: uppercase;
    margin-bottom: 8px;
    display: block;
  }

  .section-head h2 {
    font-size: clamp(1.6rem, 2.5vw, 2.1rem);
    font-weight: 650;
    line-height: 1.3;
    color: var(--color-text);
  }

  .section-head .desc {
    max-width: 460px;
    font-size: 0.9375rem;
    color: var(--color-text-secondary);
    line-height: 1.7;
  }

  @media (max-width: 768px) {
    .section-head {
      flex-direction: column;
      align-items: flex-start;
      gap: 12px;
      margin-bottom: 28px;
    }
  }

  /* ===== 指南概览 ===== */
  .overview-grid {
    display: grid;
    grid-template-columns: 1.1fr 0.9fr;
    gap: 48px;
    align-items: center;
  }

  .overview-content .lead {
    font-size: 1.0625rem;
    color: var(--color-text);
    line-height: 1.8;
    margin-bottom: 16px;
  }

  .overview-content .text-block {
    color: var(--color-text-secondary);
    line-height: 1.75;
    margin-bottom: 14px;
  }

  .overview-list {
    margin-top: 20px;
    display: grid;
    gap: 12px;
  }

  .overview-list li {
    display: flex;
    align-items: flex-start;
    gap: 12px;
    color: var(--color-text);
    font-size: 0.9375rem;
    line-height: 1.6;
  }

  .overview-list li i {
    color: var(--color-accent);
    font-size: 1.0625rem;
    margin-top: 3px;
    flex-shrink: 0;
  }

  .overview-visual {
    position: relative;
  }

  .overview-card {
    background: #fff;
    border-radius: var(--radius-lg);
    box-shadow: var(--shadow-card);
    overflow: hidden;
    transition: transform 0.3s ease, box-shadow 0.3s ease;
  }

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

  .overview-card img {
    width: 100%;
    height: 240px;
    object-fit: cover;
  }

  .overview-card-body {
    padding: 24px;
  }

  .overview-card-body .tag {
    display: inline-block;
    padding: 4px 12px;
    background: var(--color-bg-secondary);
    border-radius: var(--radius-pill);
    font-size: 0.75rem;
    font-weight: 600;
    color: var(--color-primary);
    margin-bottom: 12px;
  }

  .overview-card-body h3 {
    font-size: 1.125rem;
    font-weight: 600;
    color: var(--color-text);
    margin-bottom: 8px;
    line-height: 1.4;
  }

  .overview-card-body p {
    font-size: 0.875rem;
    color: var(--color-text-secondary);
    line-height: 1.65;
  }

  @media (max-width: 900px) {
    .overview-grid {
      grid-template-columns: 1fr;
      gap: 32px;
    }
  }

  /* ===== 指南步骤卡片 ===== */
  .steps-grid {
    display: grid;
    grid-template-columns: repeat(2, 1fr);
    gap: 24px;
  }

  .guide-card {
    position: relative;
    display: flex;
    flex-direction: column;
    padding: 32px 28px;
    background: #fff;
    border-radius: var(--radius-lg);
    border: 1px solid rgba(216, 226, 236, 0.6);
    box-shadow: var(--shadow-card);
    transition: transform 0.3s ease, box-shadow 0.3s ease;
    overflow: hidden;
  }

  .guide-card::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    width: 4px;
    height: 64px;
    border-radius: 0 0 4px 0;
    background: var(--gradient-main);
    opacity: 0;
    transition: opacity 0.3s ease;
  }

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

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

  .guide-card-icon {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    width: 56px;
    height: 56px;
    border-radius: 16px;
    background: var(--color-bg-secondary);
    color: var(--color-primary);
    font-size: 1.375rem;
    margin-bottom: 20px;
    transition: background 0.3s ease, color 0.3s ease;
  }

  .guide-card:hover .guide-card-icon {
    background: var(--color-primary);
    color: #fff;
  }

  .guide-card .card-tag {
    display: inline-block;
    align-self: flex-start;
    padding: 3px 12px;
    background: rgba(15, 169, 88, 0.1);
    border-radius: var(--radius-pill);
    font-size: 0.75rem;
    font-weight: 600;
    color: var(--color-accent);
    margin-bottom: 14px;
  }

  .guide-card h3 {
    font-size: 1.125rem;
    font-weight: 600;
    color: var(--color-text);
    line-height: 1.4;
    margin-bottom: 10px;
  }

  .guide-card p {
    font-size: 0.875rem;
    color: var(--color-text-secondary);
    line-height: 1.7;
    flex: 1;
  }

  .guide-card .card-link {
    display: inline-flex;
    align-items: center;
    gap: 6px;
    margin-top: 20px;
    font-size: 0.875rem;
    font-weight: 600;
    color: var(--color-primary);
    transition: gap 0.2s ease, color 0.2s ease;
  }

  .guide-card .card-link i {
    font-size: 0.8125rem;
    transition: transform 0.2s ease;
  }

  .guide-card:hover .card-link {
    gap: 10px;
    color: var(--color-accent);
  }

  .guide-card:hover .card-link i {
    transform: translateX(2px);
  }

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

  /* ===== 操作流程 ===== */
  .flow-section {
    background: var(--color-bg-warm);
    border-radius: var(--radius-lg);
  }

  .flow-steps {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: 32px;
  }

  .flow-step {
    position: relative;
    padding: 28px 24px;
    background: rgba(255, 255, 255, 0.85);
    border-radius: var(--radius-lg);
    border: 1px solid rgba(216, 226, 236, 0.7);
    transition: transform 0.3s ease, box-shadow 0.3s ease;
  }

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

  .flow-step .step-num {
    font-family: var(--font-num);
    font-size: 2.5rem;
    font-weight: 700;
    line-height: 1;
    color: transparent;
    -webkit-text-stroke: 1.5px var(--color-primary);
    margin-bottom: 16px;
    display: block;
  }

  .flow-step h3 {
    font-size: 1.0625rem;
    font-weight: 600;
    color: var(--color-text);
    margin-bottom: 8px;
  }

  .flow-step p {
    font-size: 0.875rem;
    color: var(--color-text-secondary);
    line-height: 1.65;
  }

  @media (max-width: 900px) {
    .flow-steps {
      grid-template-columns: 1fr;
      gap: 20px;
    }
  }

  /* ===== 注意事项 ===== */
  .notice-section {
    background: var(--color-bg-secondary);
  }

  .notice-card {
    display: flex;
    align-items: flex-start;
    gap: 20px;
    padding: 32px 36px;
    background: #fff;
    border-radius: var(--radius-lg);
    border-left: 4px solid var(--color-accent);
    box-shadow: var(--shadow-card);
  }

  .notice-card .notice-icon {
    font-size: 1.5rem;
    color: var(--color-accent);
    flex-shrink: 0;
    margin-top: 4px;
  }

  .notice-card h3 {
    font-size: 1.125rem;
    font-weight: 600;
    color: var(--color-text);
    margin-bottom: 8px;
  }

  .notice-card p {
    font-size: 0.9375rem;
    color: var(--color-text-secondary);
    line-height: 1.7;
  }

  @media (max-width: 768px) {
    .notice-card {
      flex-direction: column;
      padding: 24px;
    }
  }

  /* ===== FAQ ===== */
  .faq-list {
    max-width: 860px;
    margin: 0 auto;
    background: #fff;
    border-radius: var(--radius-lg);
    box-shadow: var(--shadow-card);
    overflow: hidden;
  }

  .faq-item {
    border-bottom: 1px solid var(--color-border);
  }

  .faq-item:last-child {
    border-bottom: none;
  }

  .faq-question {
    display: flex;
    align-items: center;
    justify-content: space-between;
    gap: 16px;
    width: 100%;
    padding: 22px 28px;
    text-align: left;
    font-size: 1rem;
    font-weight: 600;
    color: var(--color-text);
    background: transparent;
    transition: color 0.2s ease, background 0.2s ease;
    line-height: 1.5;
  }

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

  .faq-icon {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    width: 32px;
    height: 32px;
    border-radius: 50%;
    background: var(--color-bg-secondary);
    color: var(--color-primary);
    font-size: 1rem;
    flex-shrink: 0;
    transition: transform 0.3s ease, background 0.3s ease, color 0.3s ease;
  }

  .faq-item.active .faq-icon {
    transform: rotate(45deg);
    background: var(--color-primary);
    color: #fff;
  }

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

  .faq-item.active .faq-answer {
    max-height: 400px;
  }

  .faq-answer-inner {
    padding: 0 28px 22px;
    background: var(--color-bg-secondary);
    margin: 0 12px 12px;
    border-radius: var(--radius-sm);
    line-height: 1.8;
    color: var(--color-text-secondary);
    font-size: 0.9375rem;
    padding-top: 18px;
  }

  @media (max-width: 768px) {
    .faq-question {
      padding: 18px 18px;
      font-size: 0.9375rem;
    }
    .faq-answer-inner {
      padding: 16px 18px;
      margin: 0 8px 8px;
    }
  }

  /* ===== CTA ===== */
  .cta-section {
    padding: 0 24px var(--space-section);
  }

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

  .cta-banner::after {
    content: '';
    position: absolute;
    top: -40%;
    right: -10%;
    width: 280px;
    height: 280px;
    border-radius: 50%;
    background: rgba(255, 255, 255, 0.06);
    pointer-events: none;
  }

  .cta-banner h2 {
    font-size: clamp(1.5rem, 2.2vw, 2rem);
    font-weight: 700;
    color: #fff;
    margin-bottom: 12px;
    line-height: 1.3;
  }

  .cta-banner p {
    font-size: 1rem;
    color: rgba(255, 255, 255, 0.88);
    max-width: 560px;
    margin: 0 auto 28px;
    line-height: 1.7;
  }

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

  .btn {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    gap: 8px;
    padding: 12px 28px;
    border-radius: var(--radius-pill);
    font-size: 0.9375rem;
    font-weight: 600;
    line-height: 1.4;
    transition: all 0.25s ease;
    border: none;
    cursor: pointer;
  }

  .btn i {
    font-size: 0.8125rem;
  }

  .btn-primary {
    background: #fff;
    color: var(--color-primary);
    box-shadow: 0 4px 16px rgba(0, 0, 0, 0.12);
  }

  .btn-primary:hover {
    background: var(--color-bg-secondary);
    color: var(--color-primary-dark);
    transform: translateY(-2px);
    box-shadow: 0 8px 24px rgba(0, 0, 0, 0.16);
  }

  .btn-primary:active {
    transform: translateY(-1px);
  }

  .btn-primary:focus-visible {
    outline: 2px solid rgba(255, 255, 255, 0.7);
    outline-offset: 2px;
  }

  .btn-outline-light {
    background: transparent;
    color: #fff;
    border: 1.5px solid rgba(255, 255, 255, 0.7);
    padding: 10.5px 26px;
  }

  .btn-outline-light:hover {
    background: rgba(255, 255, 255, 0.12);
    color: #fff;
    border-color: #fff;
    transform: translateY(-2px);
  }

  .btn-outline-light:active {
    transform: translateY(-1px);
  }

  .btn-outline-light:focus-visible {
    outline: 2px solid rgba(255, 255, 255, 0.7);
    outline-offset: 2px;
  }

  @media (max-width: 768px) {
    .cta-banner {
      padding: 24px;
    }
    .cta-banner p {
      font-size: 0.9375rem;
    }
  }

  /* ===== 页脚 ===== */
  .site-footer {
    background: #fff;
    border-top: 1px solid var(--color-border);
    padding: 56px 0 0;
  }

  .footer-grid {
    display: grid;
    grid-template-columns: 1.4fr 1fr 1fr;
    gap: 48px;
    padding-bottom: 40px;
  }

  .footer-brand .brand {
    font-size: 1.125rem;
    margin-bottom: 14px;
  }

  .footer-brand p {
    font-size: 0.875rem;
    color: var(--color-text-secondary);
    line-height: 1.7;
    max-width: 340px;
  }

  .footer-col h4 {
    font-size: 0.9375rem;
    font-weight: 600;
    color: var(--color-text);
    margin-bottom: 16px;
  }

  .footer-col ul {
    display: grid;
    gap: 10px;
  }

  .footer-col ul a {
    font-size: 0.875rem;
    color: var(--color-text-secondary);
    transition: color 0.2s ease;
    line-height: 1.5;
  }

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

  .copyright {
    border-top: 1px solid var(--color-border);
    padding: 20px 0;
    text-align: center;
    font-size: 0.8125rem;
    color: var(--color-text-secondary);
  }

  .copyright a {
    color: var(--color-text-secondary);
  }

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

  @media (max-width: 900px) {
    .footer-grid {
      grid-template-columns: 1fr 1fr;
      gap: 32px;
    }
    .footer-brand {
      grid-column: 1 / -1;
    }
  }

  @media (max-width: 600px) {
    .footer-grid {
      grid-template-columns: 1fr;
      gap: 28px;
    }
  }

  /* ===== 响应式导航 ===== */
  @media (max-width: 768px) {
    .container {
      padding: 0 16px;
    }

    .site-nav,
    .site-nav.scrolled {
      top: 8px;
      width: calc(100% - 24px);
      border-radius: 18px;
    }

    .nav-toggle {
      display: flex;
    }

    .nav-menu {
      position: absolute;
      top: calc(100% + 8px);
      left: 0;
      right: 0;
      flex-direction: column;
      align-items: stretch;
      background: rgba(255, 255, 255, 0.95);
      backdrop-filter: blur(16px);
      -webkit-backdrop-filter: blur(16px);
      border-radius: 18px;
      border: 1px solid rgba(216, 226, 236, 0.8);
      box-shadow: var(--shadow-nav);
      padding: 12px;
      opacity: 0;
      visibility: hidden;
      transform: translateY(-8px);
      transition: opacity 0.3s ease, transform 0.3s ease, visibility 0.3s ease;
    }

    .nav-menu.open {
      opacity: 1;
      visibility: visible;
      transform: translateY(0);
    }

    .nav-link {
      padding: 12px 16px;
      border-radius: 12px;
      font-size: 0.9375rem;
    }

    .nav-link.active {
      background: var(--color-primary);
      color: #fff;
    }
  }

  /* ===== 按钮焦点 ===== */
  .btn:focus-visible,
  .nav-toggle:focus-visible {
    outline: 2px solid var(--color-accent);
    outline-offset: 2px;
  }

  .guide-card .card-link:focus-visible {
    outline: 2px solid var(--color-accent);
    outline-offset: 2px;
    border-radius: 4px;
  }