/* roulang page: index */
:root {
  --primary: #0B5D61;
  --primary-dark: #074246;
  --accent: #D4963B;
  --bg-page: #F6F4F0;
  --surface: #FFFFFF;
  --ink: #1C2426;
  --ink-muted: #667A7E;
  --line: #E4DFD8;
  --deep: #102A2E;
  --radius-lg: 16px;
  --radius-md: 8px;
  --radius-sm: 6px;
  --shadow-sm: 0 2px 8px rgba(16, 42, 46, 0.06);
  --shadow-md: 0 8px 24px rgba(16, 42, 46, 0.10);
  --shadow-lg: 0 16px 40px rgba(16, 42, 46, 0.14);
  --font-family: "PingFang SC", "Microsoft YaHei", system-ui, sans-serif;
}
*, *::before, *::after { box-sizing: border-box; margin: 0; padding: 0; }
html { scroll-behavior: smooth; }
body {
  font-family: var(--font-family);
  background: var(--bg-page);
  color: var(--ink);
  line-height: 1.75;
  font-size: 16px;
  -webkit-font-smoothing: antialiased;
}
img { max-width: 100%; display: block; }
a { color: inherit; text-decoration: none; transition: color 0.2s ease; }
button, input, select, textarea { font: inherit; color: inherit; }
button { cursor: pointer; background: none; border: none; }
ul, ol { list-style: none; }
.container { max-width: 1200px; margin: 0 auto; padding-left: 24px; padding-right: 24px; }

/* Header */
.site-header { position: sticky; top: 0; z-index: 100; background: rgba(246, 244, 240, 0.94); backdrop-filter: blur(16px); -webkit-backdrop-filter: blur(16px); border-bottom: 1px solid var(--line); height: 72px; transition: box-shadow 0.2s ease; }
.site-header.is-scrolled { box-shadow: 0 4px 16px rgba(16, 42, 46, 0.06); }
.header-inner { display: flex; align-items: center; justify-content: space-between; height: 72px; gap: 20px; }
.brand { display: flex; align-items: center; gap: 10px; flex-shrink: 0; }
.brand-icon { width: 30px; height: 30px; border-radius: 8px; background: var(--primary); color: #fff; display: flex; align-items: center; justify-content: center; flex-shrink: 0; }
.brand-icon svg { width: 20px; height: 20px; }
.brand-text { font-size: 1.15rem; font-weight: 800; color: var(--primary); letter-spacing: normal; white-space: nowrap; }
.main-nav { display: flex; align-items: center; gap: 28px; }
.nav-link { position: relative; font-size: 14px; font-weight: 500; color: var(--ink); padding: 8px 0; line-height: 1.4; }
.nav-link:hover { color: var(--primary); }
.nav-link.active { color: var(--primary); font-weight: 600; }
.nav-link.active::after { content: ''; position: absolute; left: 0; right: 0; bottom: -2px; height: 2px; background: var(--primary); border-radius: 2px; }
.header-actions { display: flex; align-items: center; gap: 12px; }
.header-search { display: flex; align-items: center; gap: 8px; background: #fff; border: 1px solid var(--line); border-radius: var(--radius-md); padding: 8px 12px; width: 220px; transition: border-color 0.2s ease, box-shadow 0.2s ease; }
.header-search:focus-within { border-color: var(--primary); box-shadow: 0 0 0 3px rgba(11, 93, 97, 0.12); }
.header-search i { color: var(--ink-muted); font-size: 14px; }
.header-search input { border: none; outline: none; background: transparent; width: 100%; font-size: 14px; }
.btn-ghost { display: inline-flex; align-items: center; justify-content: center; padding: 9px 16px; border: 1px solid var(--line); border-radius: var(--radius-md); font-size: 14px; font-weight: 500; color: var(--ink); background: #fff; min-height: 40px; transition: border-color 0.2s ease, color 0.2s ease; }
.btn-ghost:hover { border-color: var(--primary); color: var(--primary); }
.btn-primary { display: inline-flex; align-items: center; justify-content: center; gap: 6px; padding: 9px 18px; background: var(--primary); color: #fff; border-radius: var(--radius-md); font-size: 14px; font-weight: 600; min-height: 40px; box-shadow: 0 2px 10px rgba(11, 93, 97, 0.18); transition: background 0.2s ease, box-shadow 0.2s ease, transform 0.2s ease; }
.btn-primary:hover { background: var(--primary-dark); box-shadow: 0 6px 16px rgba(11, 93, 97, 0.24); transform: translateY(-1px); }
.btn-primary:focus-visible, .btn-ghost:focus-visible, .btn-accent:focus-visible, .btn-outline-white:focus-visible { outline: 2px solid var(--primary); outline-offset: 2px; }
.hamburger { display: none; flex-direction: column; gap: 5px; width: 44px; height: 44px; align-items: center; justify-content: center; border-radius: var(--radius-sm); }
.hamburger span { width: 22px; height: 2px; background: var(--ink); border-radius: 2px; transition: transform 0.3s ease, opacity 0.3s ease; }
.hamburger.open span:nth-child(1) { transform: translateY(7px) rotate(45deg); }
.hamburger.open span:nth-child(2) { opacity: 0; }
.hamburger.open span:nth-child(3) { transform: translateY(-7px) rotate(-45deg); }

/* Mobile menu */
.mobile-menu { display: none; position: fixed; top: 72px; left: 0; right: 0; background: var(--bg-page); border-bottom: 1px solid var(--line); padding: 20px 24px 28px; z-index: 99; box-shadow: var(--shadow-md); max-height: calc(100vh - 72px); overflow-y: auto; }
.mobile-menu.open { display: block; }
.mobile-nav { display: flex; flex-direction: column; gap: 4px; margin-bottom: 16px; }
.mobile-menu .nav-link { font-size: 16px; padding: 12px 0; border-bottom: 1px solid rgba(228, 223, 216, 0.6); }
.mobile-menu .nav-link.active::after { display: none; }
.mobile-search { display: flex; align-items: center; gap: 10px; background: #fff; border: 1px solid var(--line); border-radius: var(--radius-md); padding: 10px 14px; margin-bottom: 16px; }
.mobile-search i { color: var(--ink-muted); font-size: 14px; }
.mobile-search input { border: none; outline: none; background: transparent; width: 100%; font-size: 14px; }
.mobile-actions { display: flex; gap: 10px; }
.mobile-actions a { flex: 1; }

/* Hero */
.hero { position: relative; min-height: 620px; display: flex; align-items: center; background-color: var(--deep); color: #fff; overflow: hidden; }
.hero-bg { position: absolute; inset: 0; background-size: cover; background-position: center; }
.hero-overlay { position: absolute; inset: 0; background: linear-gradient(120deg, rgba(16, 42, 46, 0.93) 35%, rgba(11, 93, 97, 0.72) 100%); }
.hero-inner { position: relative; z-index: 2; display: grid; grid-template-columns: 1.15fr 0.85fr; gap: 56px; align-items: center; padding-top: 80px; padding-bottom: 80px; }
.hero-eyebrow { display: inline-flex; gap: 6px; align-items: center; font-size: 13px; letter-spacing: 0.12em; color: #FFD9A3; background: rgba(212, 150, 59, 0.14); border: 1px solid rgba(212, 150, 59, 0.35); padding: 6px 14px; border-radius: 999px; margin-bottom: 22px; }
.hero h1 { font-size: clamp(2.1rem, 4.6vw, 3.4rem); font-weight: 800; line-height: 1.18; color: #fff; margin-bottom: 20px; letter-spacing: 0; }
.hero h1 .text-hl { color: #FFD9A3; }
.hero-sub { font-size: 18px; line-height: 1.75; color: rgba(255, 255, 255, 0.78); max-width: 540px; margin-bottom: 32px; }
.hero-buttons { display: flex; gap: 14px; flex-wrap: wrap; margin-bottom: 34px; }
.btn-accent { display: inline-flex; align-items: center; justify-content: center; gap: 8px; background: var(--accent); color: #fff; font-weight: 700; font-size: 15px; padding: 12px 24px; border-radius: var(--radius-md); min-height: 48px; box-shadow: 0 6px 20px rgba(212, 150, 59, 0.32); transition: background 0.2s ease, box-shadow 0.2s ease, transform 0.2s ease; }
.btn-accent:hover { background: #C2842C; transform: translateY(-2px); box-shadow: 0 10px 28px rgba(212, 150, 59, 0.4); }
.btn-outline-white { display: inline-flex; align-items: center; justify-content: center; padding: 12px 24px; border: 1px solid rgba(255, 255, 255, 0.6); border-radius: var(--radius-md); font-weight: 500; color: #fff; font-size: 15px; min-height: 48px; transition: background 0.2s ease, border-color 0.2s ease; }
.btn-outline-white:hover { background: rgba(255, 255, 255, 0.1); border-color: #fff; }
.hero-points { display: flex; gap: 22px; flex-wrap: wrap; font-size: 14px; color: rgba(255, 255, 255, 0.65); }
.hero-points i { color: #8FD0A6; margin-right: 4px; }
.hero-visual { position: relative; }
.hero-card { background: rgba(16, 42, 46, 0.55); border: 1px solid rgba(255, 255, 255, 0.14); border-radius: var(--radius-lg); padding: 24px; }
.hero-card-head { font-size: 14px; font-weight: 600; color: #fff; margin-bottom: 14px; display: flex; justify-content: space-between; align-items: center; }
.hero-card-head span:last-child { color: #FFD9A3; font-size: 12px; font-weight: 500; }
.hero-card-list { display: flex; flex-direction: column; gap: 10px; }
.hero-card-item { border-top: 1px solid rgba(255, 255, 255, 0.1); padding-top: 12px; }
.hci-title { font-size: 14px; color: #fff; font-weight: 500; }
.hci-meta { font-size: 12px; color: rgba(255, 255, 255, 0.55); margin-top: 4px; }
.hero-scroll { position: absolute; bottom: 24px; left: 50%; transform: translateX(-50%); color: rgba(255, 255, 255, 0.55); font-size: 18px; animation: bounceDown 2s infinite; z-index: 3; }
@keyframes bounceDown { 0%, 100% { transform: translate(-50%, 0); } 50% { transform: translate(-50%, 8px); } }

/* Trust bar */
.trust-bar { background: #fff; border-bottom: 1px solid var(--line); }
.trust-inner { display: flex; align-items: center; min-height: 80px; flex-wrap: wrap; }
.trust-item { display: flex; align-items: center; gap: 10px; padding: 0 36px; font-size: 15px; font-weight: 600; color: var(--ink); min-height: 44px; }
.trust-item i { font-size: 20px; color: var(--primary); width: 24px; text-align: center; }
.trust-divider { width: 1px; height: 24px; background: var(--line); flex-shrink: 0; }
.trust-item:first-child { padding-left: 0; }
.trust-item:last-child { padding-right: 0; }

/* Sections */
.section { padding: 80px 0; }
.section-eyebrow { display: inline-block; font-size: 13px; font-weight: 600; letter-spacing: 0.08em; color: var(--primary); margin-bottom: 10px; }
.section-head { margin-bottom: 48px; }
.section-head h2 { font-size: clamp(1.6rem, 3vw, 2.25rem); font-weight: 800; color: var(--ink); line-height: 1.25; margin-bottom: 0; }
.section-head p { color: var(--ink-muted); margin-top: 10px; max-width: 640px; }
.section-head.center { text-align: center; }
.section-head.center p { margin-left: auto; margin-right: auto; }
.latest-section .section-head { display: flex; align-items: flex-end; justify-content: space-between; gap: 20px; }
.view-all { display: inline-flex; align-items: center; gap: 6px; font-size: 14px; font-weight: 600; color: var(--primary); padding-bottom: 2px; border-bottom: 2px solid transparent; transition: border-color 0.2s ease; }
.view-all:hover { border-color: var(--primary); }

/* Solutions */
.solutions-grid { display: grid; grid-template-columns: 1fr 1fr; gap: 24px; }
.solution-card { background: var(--surface); border: 1px solid var(--line); border-radius: var(--radius-lg); padding: 32px; position: relative; overflow: hidden; transition: transform 0.2s ease, box-shadow 0.2s ease, border-color 0.2s ease; }
.solution-card::before { content: ''; position: absolute; top: 0; left: 0; right: 0; height: 4px; background: var(--primary); opacity: 0; transform: scaleX(0.4); transition: opacity 0.3s ease, transform 0.3s ease; }
.solution-card:hover::before { opacity: 1; transform: scaleX(1); }
.solution-card:hover { transform: translateY(-4px); border-color: var(--primary); box-shadow: var(--shadow-lg); }
.solution-icon { width: 56px; height: 56px; border-radius: 12px; background: rgba(11, 93, 97, 0.1); color: var(--primary); font-size: 22px; display: flex; align-items: center; justify-content: center; margin-bottom: 20px; }
.solution-card h3 { font-size: 1.25rem; font-weight: 800; margin-bottom: 10px; color: var(--ink); }
.solution-card p { color: var(--ink-muted); font-size: 15px; line-height: 1.7; margin-bottom: 18px; }
.solution-card a { display: inline-flex; align-items: center; gap: 6px; font-weight: 600; font-size: 14px; color: var(--primary); }
.solution-card a i { transition: transform 0.2s ease; }
.solution-card a:hover i { transform: translateX(4px); }
.solution-card-wide { grid-column: 1 / -1; display: flex; gap: 24px; align-items: center; flex-direction: row; }
.solution-card-wide .solution-icon { margin-bottom: 0; flex-shrink: 0; }
.solution-wide-copy { flex: 1; }
.solution-wide-copy p { margin-bottom: 10px; }

/* Stats */
.stats-section { background: var(--deep); color: #fff; }
.stats-grid { display: grid; grid-template-columns: repeat(4, 1fr); gap: 32px; text-align: center; }
.stat-num { font-size: 52px; font-weight: 800; color: var(--accent); line-height: 1.1; font-variant-numeric: tabular-nums; }
.stat-label { font-size: 14px; color: rgba(255, 255, 255, 0.65); margin-top: 8px; }

/* Post grid */
.post-grid { display: grid; grid-template-columns: repeat(3, 1fr); gap: 24px; }
.post-card { background: var(--surface); border: 1px solid var(--line); border-radius: var(--radius-lg); overflow: hidden; transition: transform 0.2s ease, box-shadow 0.2s ease, border-color 0.2s ease; }
.post-card:hover { transform: translateY(-4px); border-color: var(--primary); box-shadow: var(--shadow-lg); }
.post-card-cover { display: block; aspect-ratio: 16 / 9; background: #E9E6E0; overflow: hidden; position: relative; }
.post-card-cover::after { content: 'pg'; position: absolute; inset: 0; display: flex; align-items: center; justify-content: center; font-size: 40px; font-weight: 800; color: rgba(16, 42, 46, 0.12); z-index: 0; }
.post-card-cover img { width: 100%; height: 100%; object-fit: cover; position: relative; z-index: 1; transition: transform 0.4s ease; }
.post-card:hover .post-card-cover img { transform: scale(1.05); }
.post-card-body { padding: 22px 24px 24px; }
.post-meta { display: flex; align-items: center; gap: 10px; margin-bottom: 10px; flex-wrap: wrap; }
.post-tag { background: rgba(11, 93, 97, 0.08); color: var(--primary); font-size: 12px; font-weight: 600; padding: 4px 10px; border-radius: 999px; white-space: nowrap; }
.post-meta time { font-size: 13px; color: var(--ink-muted); }
.post-card h3 { font-size: 17px; font-weight: 700; line-height: 1.45; margin-bottom: 8px; }
.post-card h3 a { color: var(--ink); }
.post-card h3 a:hover { color: var(--primary); }
.post-card-body p { font-size: 14px; color: var(--ink-muted); line-height: 1.65; display: -webkit-box; -webkit-line-clamp: 2; -webkit-box-orient: vertical; overflow: hidden; }
.empty-state { grid-column: 1 / -1; border: 2px dashed var(--line); background: #FFF9EC; border-radius: var(--radius-lg); padding: 48px 24px; text-align: center; color: var(--ink-muted); font-size: 15px; }

/* Lead section */
.lead-section { background: var(--deep); color: #fff; }
.lead-inner { display: grid; grid-template-columns: 1fr 1fr; gap: 56px; align-items: center; }
.lead-copy h2 { font-size: clamp(1.5rem, 2.6vw, 2.1rem); font-weight: 800; color: #fff; margin-bottom: 16px; }
.lead-copy > p { color: rgba(255, 255, 255, 0.75); margin-bottom: 28px; max-width: 460px; }
.lead-points { display: flex; flex-direction: column; gap: 14px; }
.lead-points li { display: flex; align-items: flex-start; gap: 10px; color: rgba(255, 255, 255, 0.85); font-size: 15px; }
.lead-points i { color: #8FD0A6; margin-top: 4px; }
.lead-form-card { background: #fff; border-radius: var(--radius-lg); padding: 32px; box-shadow: 0 24px 60px rgba(0, 0, 0, 0.3); }
.form-group { margin-bottom: 18px; }
.form-group label { display: block; font-size: 14px; font-weight: 600; color: var(--ink); margin-bottom: 6px; }
.form-group input, .form-group select { width: 100%; border: 1px solid var(--line); border-radius: var(--radius-md); padding: 11px 14px; font-size: 14px; background: var(--bg-page); outline: none; transition: border-color 0.2s ease, box-shadow 0.2s ease, background 0.2s ease; }
.form-group input:focus, .form-group select:focus { border-color: var(--primary); box-shadow: 0 0 0 3px rgba(11, 93, 97, 0.1); background: #fff; }
.btn-block { width: 100%; }
.privacy-note { display: flex; align-items: center; gap: 8px; font-size: 13px; color: var(--ink-muted); justify-content: center; margin-top: 14px; }
.form-success { background: rgba(11, 93, 97, 0.08); color: var(--primary); border: 1px solid rgba(11, 93, 97, 0.2); border-radius: 8px; padding: 10px 14px; font-size: 14px; margin-top: 12px; text-align: center; }

/* FAQ */
.faq-container { max-width: 820px; }
.faq-list { display: flex; flex-direction: column; gap: 14px; }
.faq-item { background: var(--surface); border: 1px solid var(--line); border-radius: var(--radius-lg); overflow: hidden; transition: border-color 0.2s ease, box-shadow 0.2s ease; }
.faq-item.active { border-color: var(--primary); box-shadow: var(--shadow-sm); }
.faq-question { width: 100%; display: flex; align-items: center; justify-content: space-between; gap: 16px; padding: 20px 22px; font-size: 16px; font-weight: 600; color: var(--ink); text-align: left; min-height: 44px; }
.faq-question i { color: var(--primary); font-size: 14px; transition: transform 0.3s ease; flex-shrink: 0; width: 24px; height: 24px; display: flex; align-items: center; justify-content: center; border-radius: 50%; background: rgba(11, 93, 97, 0.08); }
.faq-item.active .faq-question i { transform: rotate(45deg); }
.faq-answer { max-height: 0; overflow: hidden; transition: max-height 0.35s ease; padding: 0 22px; }
.faq-item.active .faq-answer { max-height: 300px; padding-bottom: 20px; border-top: 1px solid var(--line); padding-top: 14px; }
.faq-answer p { font-size: 14px; color: var(--ink-muted); line-height: 1.75; }

/* CTA */
.cta-section { position: relative; background: var(--deep); color: #fff; padding: 80px 0; text-align: center; overflow: hidden; }
.cta-bg { position: absolute; inset: 0; background-size: cover; background-position: center; opacity: 0.2; }
.cta-overlay { position: absolute; inset: 0; background: linear-gradient(120deg, rgba(16, 42, 46, 0.9), rgba(11, 93, 97, 0.75)); }
.cta-inner { position: relative; z-index: 2; }
.cta-inner h2 { font-size: clamp(1.6rem, 3vw, 2.4rem); font-weight: 800; color: #fff; margin-bottom: 12px; }
.cta-inner p { color: rgba(255, 255, 255, 0.7); margin-bottom: 28px; }

/* Footer */
.site-footer { background: var(--deep); color: rgba(255, 255, 255, 0.72); }
.footer-grid { display: grid; grid-template-columns: 1.6fr 1fr 1fr 1.2fr; gap: 48px; padding-top: 64px; padding-bottom: 48px; }
.footer-brand-logo .brand-text { color: #fff; }
.footer-brand-logo .brand-icon { background: rgba(255, 255, 255, 0.12); color: #fff; }
.footer-brand p { font-size: 14px; color: rgba(255, 255, 255, 0.6); margin-top: 14px; max-width: 260px; }
.footer-col h4 { font-size: 14px; font-weight: 600; color: #fff; margin-bottom: 18px; }
.footer-col a { display: block; font-size: 14px; color: rgba(255, 255, 255, 0.65); padding: 5px 0; }
.footer-col a:hover { color: var(--accent); }
.footer-col p { font-size: 14px; color: rgba(255, 255, 255, 0.6); margin-bottom: 6px; }
.footer-bottom { border-top: 1px solid rgba(255, 255, 255, 0.1); padding: 18px 0; }
.footer-bottom-inner { display: flex; align-items: center; justify-content: space-between; gap: 16px; font-size: 13px; color: rgba(255, 255, 255, 0.45); flex-wrap: wrap; }

/* Floating CTA */
.float-cta { position: fixed; right: 24px; bottom: 24px; z-index: 100; background: var(--accent); color: #fff; font-weight: 700; font-size: 14px; padding: 14px 22px; border-radius: 999px; box-shadow: 0 8px 24px rgba(212, 150, 59, 0.4); display: flex; align-items: center; gap: 8px; transition: transform 0.2s ease, box-shadow 0.2s ease; }
.float-cta:hover { transform: translateY(-2px); box-shadow: 0 12px 32px rgba(212, 150, 59, 0.48); }
.float-cta i { font-size: 14px; }

/* Modal */
.modal-overlay { position: fixed; inset: 0; background: rgba(16, 42, 46, 0.55); z-index: 999; display: flex; align-items: center; justify-content: center; padding: 20px; opacity: 0; visibility: hidden; transition: opacity 0.25s ease, visibility 0.25s ease; }
.modal-overlay.open { opacity: 1; visibility: visible; }
.modal-card { background: #fff; border-radius: var(--radius-lg); max-width: 480px; width: 100%; padding: 36px; position: relative; box-shadow: var(--shadow-lg); transform: translateY(20px); transition: transform 0.3s ease; }
.modal-overlay.open .modal-card { transform: translateY(0); }
.modal-close { position: absolute; top: 14px; right: 14px; width: 44px; height: 44px; border-radius: 50%; display: flex; align-items: center; justify-content: center; color: var(--ink-muted); font-size: 20px; transition: background 0.2s ease, color 0.2s ease; }
.modal-close:hover { background: var(--bg-page); color: var(--ink); }
.modal-card h3 { font-size: 1.4rem; font-weight: 800; margin-bottom: 8px; }
.modal-card > p { font-size: 14px; color: var(--ink-muted); margin-bottom: 24px; }
body.modal-open { overflow: hidden; }

/* Responsive */
@media (max-width: 1024px) {
  .hero-inner { grid-template-columns: 1fr; gap: 32px; }
  .hero-visual { display: none; }
  .stats-grid { grid-template-columns: repeat(2, 1fr); gap: 24px; }
  .post-grid { grid-template-columns: repeat(2, 1fr); }
  .footer-grid { grid-template-columns: 1fr 1fr; gap: 32px; }
  .header-search { display: none; }
}
@media (max-width: 768px) {
  .main-nav, .header-actions .btn-ghost, .header-actions .btn-primary { display: none; }
  .hamburger { display: flex; }
  .section { padding: 56px 0; }
  .solutions-grid { grid-template-columns: 1fr; }
  .solution-card-wide { flex-direction: column; align-items: flex-start; }
  .lead-inner { grid-template-columns: 1fr; gap: 32px; }
  .stats-grid { gap: 16px; }
  .stat-num { font-size: 40px; }
  .trust-inner { justify-content: center; padding: 14px 0; gap: 0; }
  .trust-item { padding: 0 16px; font-size: 13px; }
  .footer-grid { grid-template-columns: 1fr; }
  .footer-bottom-inner { flex-direction: column; text-align: center; }
  .hero { min-height: 560px; }
  .hero-inner { padding-top: 56px; padding-bottom: 56px; }
  .hero-sub { font-size: 16px; }
}
@media (max-width: 520px) {
  .post-grid { grid-template-columns: 1fr; }
  .trust-divider { display: none; }
  .trust-inner { flex-direction: column; gap: 0; padding: 20px 0; }
  .trust-item { padding: 6px 0; }
  .hero-buttons .btn-accent, .hero-buttons .btn-outline-white { width: 100%; }
  .float-cta { right: 16px; bottom: 16px; padding: 12px 18px; font-size: 13px; }
  .lead-form-card { padding: 24px; }
  .modal-card { padding: 28px 24px; }
}

/* roulang page: category1 */
:root {
            --primary: #0B5D61;
            --primary-dark: #074246;
            --accent: #D4963B;
            --bg-page: #F6F4F0;
            --surface: #FFFFFF;
            --ink: #1C2426;
            --ink-muted: #667A7E;
            --line: #E4DFD8;
            --deep: #102A2E;
            --radius-lg: 16px;
            --radius-md: 8px;
            --shadow-soft: 0 4px 20px rgba(16, 42, 46, 0.08);
            --shadow-hover: 0 12px 32px rgba(16, 42, 46, 0.14);
        }

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

        html {
            scroll-behavior: smooth;
        }

        body {
            font-family: "PingFang SC", "Microsoft YaHei", system-ui, -apple-system, sans-serif;
            background-color: var(--bg-page);
            color: var(--ink);
            line-height: 1.75;
            font-size: 16px;
            -webkit-font-smoothing: antialiased;
        }

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

        a {
            color: inherit;
            text-decoration: none;
            transition: color 0.2s ease;
        }

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

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

        /* Header */
        .site-header {
            height: 72px;
            background: rgba(246, 244, 240, 0.92);
            backdrop-filter: blur(12px);
            -webkit-backdrop-filter: blur(12px);
            border-bottom: 1px solid var(--line);
            position: sticky;
            top: 0;
            z-index: 50;
        }

        .site-header .container {
            height: 100%;
            display: flex;
            align-items: center;
            justify-content: space-between;
            gap: 24px;
        }

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

        .brand-icon {
            width: 28px;
            height: 28px;
            border-radius: 8px;
            background: var(--primary);
            color: #ffffff;
            display: flex;
            align-items: center;
            justify-content: center;
            padding: 4px;
        }

        .brand-icon svg {
            width: 100%;
            height: 100%;
        }

        .brand-text {
            font-size: 20px;
            font-weight: 800;
            color: var(--primary);
            letter-spacing: 0.2px;
            white-space: nowrap;
        }

        .main-nav {
            display: flex;
            align-items: center;
            gap: 32px;
        }

        .nav-link {
            font-size: 14px;
            font-weight: 500;
            color: var(--ink);
            padding: 6px 2px;
            position: relative;
            white-space: nowrap;
            transition: color 0.2s ease;
        }

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

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

        .nav-link.active::after {
            content: "";
            position: absolute;
            bottom: -4px;
            left: 0;
            width: 100%;
            height: 2px;
            background: var(--primary);
            border-radius: 2px;
        }

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

        .search-box {
            display: flex;
            align-items: center;
            background: var(--surface);
            border: 1px solid var(--line);
            border-radius: 8px;
            padding: 8px 12px;
            width: 220px;
            transition: border-color 0.2s ease, box-shadow 0.2s ease;
        }

        .search-box:focus-within {
            border-color: var(--primary);
            box-shadow: 0 0 0 3px rgba(11, 93, 97, 0.12);
        }

        .search-box svg {
            width: 16px;
            height: 16px;
            color: var(--ink-muted);
            flex-shrink: 0;
            margin-right: 8px;
        }

        .search-box input {
            width: 100%;
            border: none;
            outline: none;
            background: transparent;
            font-size: 14px;
            color: var(--ink);
        }

        .search-box input::placeholder {
            color: #9AA8AB;
        }

        .btn-ghost {
            font-size: 14px;
            font-weight: 500;
            color: var(--ink);
            padding: 8px 16px;
            border: 1px solid var(--line);
            border-radius: 8px;
            background: transparent;
            transition: all 0.2s ease;
            white-space: nowrap;
        }

        .btn-ghost:hover {
            border-color: var(--primary);
            color: var(--primary);
        }

        .btn-primary {
            font-size: 14px;
            font-weight: 600;
            color: #ffffff;
            padding: 9px 18px;
            border-radius: 8px;
            background: var(--primary);
            box-shadow: 0 2px 8px rgba(11, 93, 97, 0.25);
            transition: all 0.2s ease;
            white-space: nowrap;
        }

        .btn-primary:hover {
            background: var(--primary-dark);
            transform: translateY(-1px);
            box-shadow: 0 4px 14px rgba(11, 93, 97, 0.3);
        }

        .btn-primary:focus-visible,
        .btn-ghost:focus-visible {
            outline: 2px solid var(--primary);
            outline-offset: 2px;
        }

        .hamburger {
            display: none;
            width: 44px;
            height: 44px;
            align-items: center;
            justify-content: center;
            border-radius: 8px;
            transition: background 0.2s ease;
        }

        .hamburger:hover {
            background: rgba(11, 93, 97, 0.08);
        }

        .hamburger span {
            display: block;
            width: 22px;
            height: 2px;
            background: var(--ink);
            border-radius: 2px;
            position: relative;
            transition: all 0.25s ease;
        }

        .hamburger span::before,
        .hamburger span::after {
            content: "";
            position: absolute;
            width: 22px;
            height: 2px;
            background: var(--ink);
            border-radius: 2px;
            left: 0;
            transition: all 0.25s ease;
        }

        .hamburger span::before {
            top: -7px;
        }

        .hamburger span::after {
            top: 7px;
        }

        .mobile-menu {
            display: none;
            background: var(--surface);
            border-bottom: 1px solid var(--line);
            padding: 16px 24px 24px;
            box-shadow: 0 12px 24px rgba(16, 42, 46, 0.08);
        }

        .mobile-menu.open {
            display: block;
        }

        .mobile-menu .nav-link {
            display: block;
            padding: 12px 0;
            font-size: 16px;
            border-bottom: 1px solid var(--line);
        }

        .mobile-menu .nav-link:last-of-type {
            border-bottom: none;
        }

        .mobile-menu .search-box {
            width: 100%;
            margin: 12px 0;
        }

        .mobile-menu .btn-row {
            display: flex;
            gap: 12px;
            margin-top: 12px;
        }

        .mobile-menu .btn-ghost,
        .mobile-menu .btn-primary {
            flex: 1;
            text-align: center;
            padding: 12px;
            font-size: 15px;
        }

        /* Hero */
        .category-hero {
            position: relative;
            padding: 88px 0 96px;
            color: #ffffff;
            background: linear-gradient(120deg, rgba(16, 42, 46, 0.92), rgba(11, 93, 97, 0.78)), url('/assets/images/backpic/back-1.webp') center/cover no-repeat;
        }

        .category-hero .container {
            display: grid;
            grid-template-columns: 1fr;
            gap: 20px;
            max-width: 980px;
        }

        .category-hero h1 {
            font-size: clamp(2rem, 4vw, 3rem);
            font-weight: 800;
            line-height: 1.2;
            color: #ffffff;
            margin-bottom: 16px;
        }

        .category-hero p.lead {
            font-size: 18px;
            line-height: 1.7;
            color: rgba(255, 255, 255, 0.78);
            max-width: 640px;
        }

        .hero-meta {
            display: flex;
            flex-wrap: wrap;
            gap: 16px;
            margin-top: 28px;
        }

        .hero-meta .pill {
            display: inline-flex;
            align-items: center;
            gap: 8px;
            padding: 8px 16px;
            background: rgba(255, 255, 255, 0.12);
            border: 1px solid rgba(255, 255, 255, 0.2);
            border-radius: 999px;
            font-size: 14px;
            color: rgba(255, 255, 255, 0.92);
            backdrop-filter: blur(4px);
        }

        .hero-meta .pill svg {
            width: 16px;
            height: 16px;
        }

        /* Trust bar */
        .trust-bar {
            background: var(--surface);
            border-bottom: 1px solid var(--line);
        }

        .trust-inner {
            display: flex;
            align-items: center;
            justify-content: center;
            min-height: 80px;
            gap: 0;
            padding: 16px 24px;
        }

        .trust-item {
            display: flex;
            align-items: center;
            gap: 12px;
            padding: 0 32px;
        }

        .trust-item:not(:last-child) {
            border-right: 1px solid var(--line);
        }

        .trust-item svg {
            width: 24px;
            height: 24px;
            color: var(--primary);
            flex-shrink: 0;
        }

        .trust-item span {
            font-size: 14px;
            font-weight: 500;
            color: var(--ink);
            white-space: nowrap;
        }

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

        .section-label {
            display: inline-flex;
            align-items: center;
            gap: 6px;
            font-size: 13px;
            font-weight: 600;
            color: var(--primary);
            background: rgba(11, 93, 97, 0.08);
            padding: 4px 12px;
            border-radius: 999px;
            margin-bottom: 16px;
            letter-spacing: 0.5px;
        }

        .section-title {
            font-size: clamp(1.5rem, 3vw, 2.25rem);
            font-weight: 700;
            color: var(--ink);
            line-height: 1.3;
            margin-bottom: 12px;
        }

        .section-subtitle {
            font-size: 16px;
            color: var(--ink-muted);
            max-width: 640px;
        }

        /* Intro split */
        .intro-grid {
            display: grid;
            grid-template-columns: 1fr 1fr;
            gap: 56px;
            align-items: center;
        }

        .intro-media {
            position: relative;
            border-radius: 16px;
            overflow: hidden;
            box-shadow: var(--shadow-soft);
            aspect-ratio: 16 / 11;
        }

        .intro-media img {
            width: 100%;
            height: 100%;
            object-fit: cover;
        }

        .intro-media .img-badge {
            position: absolute;
            bottom: 16px;
            left: 16px;
            background: rgba(16, 42, 46, 0.82);
            color: #ffffff;
            padding: 6px 14px;
            border-radius: 999px;
            font-size: 13px;
            backdrop-filter: blur(4px);
        }

        .intro-copy p {
            margin-bottom: 18px;
            font-size: 16px;
            line-height: 1.8;
            color: #3E4F52;
        }

        .intro-copy p strong {
            color: var(--primary);
            font-weight: 600;
        }

        /* Feature cards - asymmetric */
        .feature-grid {
            display: grid;
            grid-template-columns: 1fr 1fr;
            gap: 24px;
        }

        .feature-card {
            background: var(--surface);
            border: 1px solid var(--line);
            border-radius: 16px;
            padding: 32px;
            position: relative;
            overflow: hidden;
            transition: transform 0.2s ease, border-color 0.2s ease, box-shadow 0.2s ease;
        }

        .feature-card::before {
            content: "";
            position: absolute;
            top: 0;
            left: 0;
            width: 100%;
            height: 4px;
            background: var(--primary);
            transform: scaleX(0);
            transform-origin: left;
            transition: transform 0.3s ease;
        }

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

        .feature-card:hover::before {
            transform: scaleX(1);
        }

        .feature-card .icon-wrap {
            width: 56px;
            height: 56px;
            border-radius: 12px;
            background: rgba(11, 93, 97, 0.1);
            color: var(--primary);
            display: flex;
            align-items: center;
            justify-content: center;
            margin-bottom: 20px;
        }

        .feature-card .icon-wrap svg {
            width: 28px;
            height: 28px;
        }

        .feature-card h3 {
            font-size: 1.25rem;
            font-weight: 700;
            color: var(--ink);
            margin-bottom: 10px;
        }

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

        .feature-card.wide {
            grid-column: 1 / -1;
            display: grid;
            grid-template-columns: 56px 1fr auto;
            gap: 20px;
            align-items: center;
            padding: 28px 32px;
        }

        .feature-card.wide .icon-wrap {
            margin-bottom: 0;
        }

        .feature-card.wide h3 {
            margin-bottom: 4px;
        }

        .feature-card.wide p {
            max-width: 720px;
        }

        .feature-link {
            display: inline-flex;
            align-items: center;
            gap: 6px;
            font-size: 14px;
            font-weight: 600;
            color: var(--primary);
            white-space: nowrap;
            transition: gap 0.2s ease;
        }

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

        /* Anchor nav */
        .anchor-section {
            background: var(--surface);
            border-top: 1px solid var(--line);
            border-bottom: 1px solid var(--line);
            padding: 0;
        }

        .anchor-nav {
            display: flex;
            justify-content: center;
            flex-wrap: wrap;
            gap: 8px 40px;
            padding: 20px 24px;
        }

        .anchor-nav a {
            font-size: 14px;
            font-weight: 500;
            color: var(--ink-muted);
            padding: 4px 0;
            position: relative;
            transition: color 0.2s ease;
        }

        .anchor-nav a:hover {
            color: var(--primary);
        }

        .anchor-nav a::after {
            content: "";
            position: absolute;
            bottom: -2px;
            left: 0;
            width: 0;
            height: 2px;
            background: var(--primary);
            transition: width 0.2s ease;
        }

        .anchor-nav a:hover::after {
            width: 100%;
        }

        /* Data band */
        .data-band {
            background: var(--deep);
            color: #ffffff;
            padding: 72px 0;
        }

        .data-band .section-title {
            color: #ffffff;
        }

        .data-band .section-subtitle {
            color: rgba(255, 255, 255, 0.65);
        }

        .stats-grid {
            display: grid;
            grid-template-columns: repeat(4, 1fr);
            gap: 32px;
            margin-top: 48px;
        }

        .stat-card {
            text-align: center;
            padding: 24px 16px;
            border-radius: 16px;
            background: rgba(255, 255, 255, 0.04);
            border: 1px solid rgba(255, 255, 255, 0.08);
            transition: background 0.2s ease, border-color 0.2s ease;
        }

        .stat-card:hover {
            background: rgba(255, 255, 255, 0.08);
            border-color: rgba(255, 255, 255, 0.16);
        }

        .stat-card .num {
            font-size: clamp(2.25rem, 4vw, 3.5rem);
            font-weight: 800;
            color: var(--accent);
            line-height: 1.1;
            font-variant-numeric: tabular-nums;
        }

        .stat-card .label {
            font-size: 14px;
            color: rgba(255, 255, 255, 0.7);
            margin-top: 8px;
        }

        /* Content directions */
        .direction-list {
            display: flex;
            flex-direction: column;
            gap: 16px;
            max-width: 860px;
            margin: 40px auto 0;
        }

        .direction-item {
            display: flex;
            align-items: flex-start;
            gap: 20px;
            background: var(--surface);
            border: 1px solid var(--line);
            border-radius: 16px;
            padding: 24px 28px;
            transition: border-color 0.2s ease, box-shadow 0.2s ease;
        }

        .direction-item:hover {
            border-color: var(--primary);
            box-shadow: var(--shadow-soft);
        }

        .direction-num {
            font-size: 1.5rem;
            font-weight: 800;
            color: var(--accent);
            flex-shrink: 0;
            width: 56px;
            height: 56px;
            display: flex;
            align-items: center;
            justify-content: center;
            background: rgba(212, 150, 59, 0.1);
            border-radius: 12px;
            font-variant-numeric: tabular-nums;
        }

        .direction-body h3 {
            font-size: 18px;
            font-weight: 700;
            color: var(--ink);
            margin-bottom: 6px;
        }

        .direction-body p {
            font-size: 14px;
            color: var(--ink-muted);
            line-height: 1.7;
        }

        /* FAQ */
        .faq-wrapper {
            max-width: 860px;
            margin: 40px auto 0;
            display: flex;
            flex-direction: column;
            gap: 16px;
        }

        .faq-item {
            background: var(--surface);
            border: 1px solid var(--line);
            border-radius: 16px;
            overflow: hidden;
            transition: border-color 0.2s ease, box-shadow 0.2s ease;
        }

        .faq-item:hover {
            border-color: rgba(11, 93, 97, 0.4);
        }

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

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

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

        .faq-icon {
            width: 24px;
            height: 24px;
            border-radius: 50%;
            background: rgba(11, 93, 97, 0.08);
            display: flex;
            align-items: center;
            justify-content: center;
            flex-shrink: 0;
            transition: background 0.2s ease, transform 0.25s ease;
        }

        .faq-icon svg {
            width: 14px;
            height: 14px;
            color: var(--primary);
            transition: transform 0.25s ease;
        }

        .faq-item.active .faq-icon {
            background: var(--primary);
            transform: rotate(180deg);
        }

        .faq-item.active .faq-icon svg {
            color: #ffffff;
        }

        .faq-answer {
            max-height: 0;
            overflow: hidden;
            transition: max-height 0.3s ease;
        }

        .faq-answer-inner {
            padding: 0 24px 20px;
            font-size: 14px;
            color: var(--ink-muted);
            line-height: 1.8;
            border-top: 1px solid var(--line);
            padding-top: 16px;
        }

        /* CTA */
        .cta-band {
            background: linear-gradient(120deg, var(--deep), var(--primary-dark));
            padding: 80px 0;
            text-align: center;
            position: relative;
            overflow: hidden;
        }

        .cta-band::before {
            content: "";
            position: absolute;
            top: -60%;
            right: -20%;
            width: 500px;
            height: 500px;
            border-radius: 50%;
            background: rgba(255, 255, 255, 0.03);
            pointer-events: none;
        }

        .cta-band h2 {
            font-size: clamp(1.75rem, 3vw, 2.5rem);
            font-weight: 800;
            color: #ffffff;
            margin-bottom: 12px;
        }

        .cta-band p {
            font-size: 16px;
            color: rgba(255, 255, 255, 0.7);
            max-width: 560px;
            margin: 0 auto 32px;
        }

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

        .btn-accent {
            font-size: 16px;
            font-weight: 600;
            color: #ffffff;
            padding: 12px 32px;
            border-radius: 8px;
            background: var(--accent);
            box-shadow: 0 4px 16px rgba(212, 150, 59, 0.3);
            transition: all 0.2s ease;
        }

        .btn-accent:hover {
            background: #B97F2E;
            transform: translateY(-2px);
            box-shadow: 0 8px 24px rgba(212, 150, 59, 0.35);
        }

        .btn-outline-light {
            font-size: 16px;
            font-weight: 600;
            color: #ffffff;
            padding: 12px 32px;
            border-radius: 8px;
            border: 1px solid rgba(255, 255, 255, 0.5);
            background: transparent;
            transition: all 0.2s ease;
        }

        .btn-outline-light:hover {
            background: rgba(255, 255, 255, 0.1);
            border-color: #ffffff;
        }

        .btn-accent:focus-visible,
        .btn-outline-light:focus-visible {
            outline: 2px solid var(--accent);
            outline-offset: 2px;
        }

        /* Footer */
        .site-footer {
            background: var(--deep);
            color: rgba(255, 255, 255, 0.75);
            padding-top: 64px;
        }

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

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

        .footer-brand-logo .brand-icon {
            background: rgba(255, 255, 255, 0.12);
            color: #ffffff;
        }

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

        .footer-brand p {
            font-size: 14px;
            line-height: 1.7;
            color: rgba(255, 255, 255, 0.55);
            max-width: 320px;
        }

        .footer-col h4 {
            font-size: 14px;
            font-weight: 600;
            color: #ffffff;
            margin-bottom: 16px;
        }

        .footer-col a {
            display: block;
            font-size: 14px;
            color: rgba(255, 255, 255, 0.6);
            padding: 6px 0;
            transition: color 0.2s ease;
        }

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

        .footer-col p {
            font-size: 14px;
            color: rgba(255, 255, 255, 0.6);
            margin: 6px 0;
        }

        .footer-bottom {
            border-top: 1px solid rgba(255, 255, 255, 0.1);
            padding: 20px 0;
        }

        .footer-bottom-inner {
            display: flex;
            justify-content: space-between;
            align-items: center;
            flex-wrap: wrap;
            gap: 8px;
        }

        .footer-bottom-inner p {
            font-size: 13px;
            color: rgba(255, 255, 255, 0.45);
        }

        /* Responsive */
        @media (max-width: 1024px) {
            .main-nav {
                gap: 20px;
            }

            .search-box {
                width: 180px;
            }

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

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

        @media (max-width: 768px) {
            .main-nav,
            .header-actions .search-box,
            .header-actions .btn-ghost,
            .header-actions .btn-primary {
                display: none;
            }

            .hamburger {
                display: flex;
            }

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

            .intro-media {
                order: -1;
            }

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

            .feature-card.wide {
                grid-column: 1;
                display: block;
            }

            .feature-card.wide .icon-wrap {
                margin-bottom: 16px;
            }

            .feature-card.wide .feature-link {
                margin-top: 12px;
            }

            .trust-inner {
                flex-direction: column;
                gap: 12px;
                padding: 20px 24px;
            }

            .trust-item {
                padding: 4px 0;
                width: 100%;
                justify-content: center;
            }

            .trust-item:not(:last-child) {
                border-right: none;
                border-bottom: 1px solid var(--line);
                padding-bottom: 12px;
            }

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

            .cta-actions .btn-accent,
            .cta-actions .btn-outline-light {
                width: 100%;
                max-width: 280px;
                text-align: center;
            }

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

            .section {
                padding: 56px 0;
            }

            .data-band {
                padding: 56px 0;
            }
        }

        @media (max-width: 520px) {
            .footer-grid {
                grid-template-columns: 1fr;
                gap: 28px;
            }

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

            .stat-card {
                padding: 16px 8px;
            }

            .stat-card .num {
                font-size: 2rem;
            }

            .direction-item {
                flex-direction: column;
                gap: 12px;
                padding: 20px;
            }

            .hero-meta {
                flex-direction: column;
            }

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

            .footer-bottom-inner {
                flex-direction: column;
                gap: 4px;
                text-align: center;
            }
        }

/* roulang page: article */
:root {
    --primary: #0B5D61;
    --primary-dark: #074246;
    --accent: #D4963B;
    --bg-page: #F6F4F0;
    --surface: #FFFFFF;
    --ink: #1C2426;
    --ink-muted: #667A7E;
    --line: #E4DFD8;
    --deep: #102A2E;
    --radius-lg: 16px;
    --radius-md: 8px;
    --shadow-sm: 0 1px 3px rgba(16, 42, 46, 0.06);
    --shadow-md: 0 8px 24px rgba(16, 42, 46, 0.08);
    --shadow-lg: 0 16px 40px rgba(16, 42, 46, 0.10);
  }

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

  html {
    scroll-behavior: smooth;
  }

  body {
    font-family: "PingFang SC", "Microsoft YaHei", system-ui, sans-serif;
    background: var(--bg-page);
    color: var(--ink);
    line-height: 1.6;
    font-size: 16px;
    -webkit-font-smoothing: antialiased;
  }

  a {
    color: inherit;
    text-decoration: none;
    transition: color 0.2s ease;
  }

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

  input,
  button,
  select,
  textarea {
    font-family: inherit;
    font-size: inherit;
  }

  button {
    cursor: pointer;
    border: none;
    background: none;
  }

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

  /* === Header === */
  .site-header {
    position: sticky;
    top: 0;
    z-index: 50;
    height: 72px;
    background: rgba(246, 244, 240, 0.92);
    backdrop-filter: blur(12px);
    -webkit-backdrop-filter: blur(12px);
    border-bottom: 1px solid var(--line);
  }

  .header-inner {
    display: flex;
    align-items: center;
    justify-content: space-between;
    height: 100%;
    gap: 16px;
  }

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

  .brand-icon {
    width: 28px;
    height: 28px;
    border-radius: 8px;
    background: var(--primary);
    color: #fff;
    display: flex;
    align-items: center;
    justify-content: center;
    flex-shrink: 0;
  }

  .brand-icon svg {
    width: 18px;
    height: 18px;
  }

  .brand-text {
    font-size: 20px;
    font-weight: 800;
    color: var(--primary);
    letter-spacing: 0.2px;
    white-space: nowrap;
  }

  .main-nav {
    display: flex;
    align-items: center;
    gap: 28px;
    margin-left: 12px;
  }

  .nav-link {
    font-size: 14px;
    font-weight: 500;
    color: var(--ink-muted);
    padding: 10px 2px;
    position: relative;
    transition: color 0.2s;
    white-space: nowrap;
  }

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

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

  .nav-link.active::after {
    content: '';
    position: absolute;
    left: 0;
    right: 0;
    bottom: 0;
    height: 2px;
    background: var(--primary);
    border-radius: 2px;
  }

  .header-actions {
    display: flex;
    align-items: center;
    gap: 12px;
    margin-left: auto;
  }

  .search-wrap {
    position: relative;
    width: 220px;
  }

  .search-wrap svg {
    position: absolute;
    left: 12px;
    top: 50%;
    transform: translateY(-50%);
    width: 16px;
    height: 16px;
    color: var(--ink-muted);
    pointer-events: none;
  }

  .search-wrap input {
    width: 100%;
    height: 38px;
    padding: 0 14px 0 36px;
    border: 1px solid var(--line);
    border-radius: var(--radius-md);
    background: var(--surface);
    font-size: 13px;
    color: var(--ink);
    outline: none;
    transition: border-color 0.2s, box-shadow 0.2s;
  }

  .search-wrap input:focus {
    border-color: var(--primary);
    box-shadow: 0 0 0 3px rgba(11, 93, 97, 0.12);
  }

  .search-wrap input::placeholder {
    color: var(--ink-muted);
  }

  .btn {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    font-size: 14px;
    font-weight: 600;
    padding: 10px 20px;
    border-radius: var(--radius-md);
    line-height: 1.2;
    transition: all 0.2s ease;
    border: none;
    outline: none;
  }

  .btn:focus-visible {
    outline: 2px solid var(--primary);
    outline-offset: 2px;
  }

  .btn-ghost {
    background: transparent;
    border: 1px solid var(--line);
    color: var(--ink);
  }

  .btn-ghost:hover {
    border-color: var(--primary);
    color: var(--primary);
  }

  .btn-primary {
    background: var(--primary);
    color: #fff;
    box-shadow: 0 4px 12px rgba(11, 93, 97, 0.24);
  }

  .btn-primary:hover {
    background: var(--primary-dark);
    transform: translateY(-1px);
    box-shadow: 0 6px 18px rgba(11, 93, 97, 0.30);
  }

  .btn-accent {
    background: var(--accent);
    color: #fff;
    box-shadow: 0 4px 14px rgba(212, 150, 59, 0.30);
  }

  .btn-accent:hover {
    filter: brightness(1.05);
    transform: translateY(-1px);
  }

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

  .btn-white:hover {
    background: var(--bg-page);
    transform: translateY(-1px);
  }

  .menu-toggle {
    display: none;
    flex-direction: column;
    justify-content: center;
    gap: 5px;
    width: 40px;
    height: 40px;
    padding: 8px;
    border-radius: 8px;
    background: transparent;
  }

  .menu-toggle span {
    display: block;
    height: 2px;
    background: var(--ink);
    border-radius: 2px;
    transition: all 0.3s;
  }

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

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

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

  /* === 文章头部 === */
  .article-header {
    background: var(--surface);
    border-bottom: 1px solid var(--line);
    padding: 40px 0 32px;
  }

  .breadcrumb {
    display: flex;
    flex-wrap: wrap;
    align-items: center;
    gap: 8px;
    font-size: 13px;
    color: var(--ink-muted);
    margin-bottom: 20px;
  }

  .breadcrumb a {
    color: var(--ink-muted);
    transition: color 0.2s;
  }

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

  .breadcrumb .sep {
    color: var(--line);
  }

  .breadcrumb .current {
    color: var(--ink);
    overflow: hidden;
    text-overflow: ellipsis;
    white-space: nowrap;
    max-width: 320px;
  }

  .article-title {
    font-size: clamp(1.8rem, 3.5vw, 2.75rem);
    font-weight: 800;
    line-height: 1.25;
    color: var(--ink);
    letter-spacing: 0.3px;
    max-width: 860px;
  }

  .article-meta {
    display: flex;
    flex-wrap: wrap;
    gap: 20px;
    margin-top: 20px;
    font-size: 14px;
    color: var(--ink-muted);
  }

  .meta-item {
    display: inline-flex;
    align-items: center;
    gap: 6px;
  }

  .meta-item svg {
    width: 15px;
    height: 15px;
    color: var(--primary);
    opacity: 0.7;
  }

  /* === 封面图 === */
  .article-cover-section {
    padding-top: 32px;
  }

  .article-cover-inner {
    max-width: 1000px;
    margin: 0 auto;
    border-radius: var(--radius-lg);
    overflow: hidden;
    box-shadow: var(--shadow-md);
    background: #e8e5e0;
    position: relative;
    aspect-ratio: 16 / 9;
  }

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

  /* === 正文区 === */
  .article-main-section {
    padding: 40px 0 24px;
  }

  .article-card {
    max-width: 860px;
    margin: 0 auto;
    background: var(--surface);
    border-radius: var(--radius-lg);
    box-shadow: var(--shadow-sm);
    border: 1px solid var(--line);
    padding: 48px 56px;
  }

  .article-content {
    font-size: 16px;
    line-height: 1.8;
    color: var(--ink);
  }

  .article-content > * + * {
    margin-top: 1.2em;
  }

  .article-content h2 {
    font-size: 1.5rem;
    font-weight: 700;
    color: var(--ink);
    margin-top: 1.8em;
    margin-bottom: 0.6em;
    line-height: 1.4;
  }

  .article-content h3 {
    font-size: 1.25rem;
    font-weight: 700;
    color: var(--ink);
    margin-top: 1.5em;
    margin-bottom: 0.5em;
    line-height: 1.4;
  }

  .article-content h4 {
    font-size: 1.05rem;
    font-weight: 700;
    color: var(--ink);
    margin-top: 1.2em;
  }

  .article-content p {
    margin-bottom: 1.2em;
    line-height: 1.8;
  }

  .article-content ul,
  .article-content ol {
    margin-bottom: 1.2em;
    padding-left: 1.6em;
  }

  .article-content ul {
    list-style: disc;
  }

  .article-content ol {
    list-style: decimal;
  }

  .article-content li {
    margin-bottom: 0.4em;
    line-height: 1.7;
  }

  .article-content blockquote {
    border-left: 3px solid var(--primary);
    background: rgba(11, 93, 97, 0.06);
    padding: 12px 20px;
    margin: 1.4em 0;
    border-radius: 0 8px 8px 0;
    color: var(--ink-muted);
    font-style: normal;
  }

  .article-content blockquote p {
    margin: 0;
  }

  .article-content img {
    border-radius: 12px;
    margin: 1.5em 0;
    box-shadow: var(--shadow-sm);
  }

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

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

  .article-content code {
    background: rgba(11, 93, 97, 0.08);
    padding: 2px 6px;
    border-radius: 4px;
    font-size: 0.9em;
  }

  .article-content pre {
    background: var(--deep);
    color: #e8e8e8;
    padding: 20px;
    border-radius: 12px;
    overflow-x: auto;
    font-size: 14px;
    line-height: 1.6;
    margin: 1.4em 0;
  }

  .article-content pre code {
    background: transparent;
    color: inherit;
    padding: 0;
  }

  .article-content table {
    width: 100%;
    border-collapse: collapse;
    margin: 1.4em 0;
    font-size: 14px;
  }

  .article-content table th,
  .article-content table td {
    border: 1px solid var(--line);
    padding: 10px 14px;
    text-align: left;
  }

  .article-content table th {
    background: rgba(11, 93, 97, 0.06);
    font-weight: 600;
  }

  /* 内容未找到 */
  .article-not-found {
    max-width: 720px;
    margin: 0 auto;
    background: var(--surface);
    border-radius: var(--radius-lg);
    border: 1px solid var(--line);
    box-shadow: var(--shadow-sm);
    padding: 80px 40px;
    text-align: center;
  }

  .article-not-found svg {
    width: 48px;
    height: 48px;
    color: var(--ink-muted);
    margin: 0 auto 20px;
    opacity: 0.5;
  }

  .article-not-found h1 {
    font-size: 1.5rem;
    font-weight: 700;
    color: var(--ink);
    margin-bottom: 12px;
  }

  .article-not-found p {
    font-size: 14px;
    color: var(--ink-muted);
    margin-bottom: 28px;
  }

  /* === 文末标签 === */
  .article-footer {
    padding: 16px 0 32px;
  }

  .article-footer-inner {
    max-width: 860px;
    margin: 0 auto;
    display: flex;
    flex-wrap: wrap;
    align-items: center;
    justify-content: space-between;
    gap: 16px;
  }

  .article-tags {
    display: flex;
    flex-wrap: wrap;
    gap: 10px;
  }

  .tag {
    display: inline-flex;
    align-items: center;
    background: rgba(11, 93, 97, 0.08);
    color: var(--primary);
    font-size: 13px;
    font-weight: 500;
    padding: 6px 14px;
    border-radius: 20px;
    transition: background 0.2s;
  }

  .tag:hover {
    background: rgba(11, 93, 97, 0.15);
  }

  .back-link {
    font-size: 14px;
    font-weight: 500;
    color: var(--primary);
    display: inline-flex;
    align-items: center;
    gap: 6px;
    transition: color 0.2s;
    padding: 8px 0;
  }

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

  /* === 相关推荐 === */
  .related-section {
    padding: 48px 0;
    background: var(--surface);
    border-top: 1px solid var(--line);
  }

  .section-title {
    font-size: clamp(1.4rem, 2.5vw, 1.9rem);
    font-weight: 700;
    color: var(--ink);
    margin-bottom: 10px;
  }

  .section-subtitle {
    font-size: 14px;
    color: var(--ink-muted);
    margin-bottom: 32px;
  }

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

  .related-card {
    display: flex;
    flex-direction: column;
    background: var(--surface);
    border: 1px solid var(--line);
    border-radius: var(--radius-lg);
    overflow: hidden;
    box-shadow: var(--shadow-sm);
    transition: all 0.25s ease;
  }

  .related-card:hover {
    transform: translateY(-4px);
    box-shadow: var(--shadow-md);
    border-color: rgba(11, 93, 97, 0.3);
  }

  .related-card-image {
    aspect-ratio: 16 / 9;
    overflow: hidden;
    background: #e8e5e0;
    position: relative;
  }

  .related-card-image img {
    width: 100%;
    height: 100%;
    object-fit: cover;
    transition: transform 0.4s ease;
  }

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

  .related-card-body {
    padding: 20px;
    display: flex;
    flex-direction: column;
    flex: 1;
  }

  .related-card-tag {
    font-size: 12px;
    color: var(--primary);
    font-weight: 600;
    margin-bottom: 8px;
  }

  .related-card-title {
    font-size: 16px;
    font-weight: 700;
    color: var(--ink);
    line-height: 1.4;
    margin-bottom: 8px;
    display: -webkit-box;
    -webkit-line-clamp: 2;
    -webkit-box-orient: vertical;
    overflow: hidden;
    transition: color 0.2s;
  }

  .related-card:hover .related-card-title {
    color: var(--primary);
  }

  .related-card-excerpt {
    font-size: 13px;
    color: var(--ink-muted);
    line-height: 1.6;
    margin-bottom: 16px;
    display: -webkit-box;
    -webkit-line-clamp: 2;
    -webkit-box-orient: vertical;
    overflow: hidden;
    flex: 1;
  }

  .related-card-date {
    font-size: 12px;
    color: var(--ink-muted);
    display: flex;
    align-items: center;
    gap: 6px;
  }

  .related-card-date svg {
    width: 14px;
    height: 14px;
  }

  /* === CTA === */
  .cta-section {
    background: var(--deep);
    padding: 64px 0;
    position: relative;
    overflow: hidden;
  }

  .cta-section::before {
    content: '';
    position: absolute;
    inset: 0;
    background: linear-gradient(120deg, rgba(16, 42, 46, 0.95), rgba(11, 93, 97, 0.75));
  }

  .cta-inner {
    position: relative;
    z-index: 1;
    text-align: center;
    max-width: 720px;
  }

  .cta-inner h2 {
    font-size: clamp(1.5rem, 3vw, 2.25rem);
    font-weight: 700;
    color: #fff;
    margin-bottom: 14px;
    line-height: 1.3;
  }

  .cta-inner p {
    font-size: 16px;
    color: rgba(255, 255, 255, 0.8);
    margin-bottom: 28px;
    line-height: 1.6;
  }

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

  /* === Footer === */
  .site-footer {
    background: var(--deep);
    color: rgba(255, 255, 255, 0.7);
    padding-top: 56px;
  }

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

  .footer-brand-logo {
    margin-bottom: 14px;
  }

  .footer-brand p {
    font-size: 14px;
    line-height: 1.7;
    color: rgba(255, 255, 255, 0.65);
    max-width: 320px;
  }

  .footer-col h4 {
    font-size: 15px;
    font-weight: 600;
    color: #fff;
    margin-bottom: 16px;
  }

  .footer-col a {
    display: block;
    font-size: 14px;
    color: rgba(255, 255, 255, 0.6);
    padding: 4px 0;
    transition: color 0.2s;
  }

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

  .footer-col p {
    font-size: 14px;
    color: rgba(255, 255, 255, 0.6);
    line-height: 1.6;
    margin-bottom: 4px;
  }

  .footer-bottom {
    border-top: 1px solid rgba(255, 255, 255, 0.1);
    padding: 20px 0;
  }

  .footer-bottom-inner {
    display: flex;
    justify-content: space-between;
    align-items: center;
    gap: 12px;
    flex-wrap: wrap;
  }

  .footer-bottom p {
    font-size: 13px;
    color: rgba(255, 255, 255, 0.45);
  }

  /* === Modal === */
  .modal-overlay {
    position: fixed;
    inset: 0;
    z-index: 100;
    background: rgba(16, 42, 46, 0.65);
    display: none;
    align-items: center;
    justify-content: center;
    padding: 20px;
    backdrop-filter: blur(4px);
  }

  .modal-overlay.active {
    display: flex;
  }

  .modal-panel {
    background: var(--surface);
    border-radius: var(--radius-lg);
    max-width: 480px;
    width: 100%;
    padding: 36px;
    position: relative;
    box-shadow: var(--shadow-lg);
    max-height: 90vh;
    overflow-y: auto;
  }

  .modal-close {
    position: absolute;
    top: 16px;
    right: 16px;
    width: 36px;
    height: 36px;
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    background: var(--bg-page);
    color: var(--ink-muted);
    transition: all 0.2s;
  }

  .modal-close:hover {
    background: var(--line);
    color: var(--ink);
  }

  .modal-panel h3 {
    font-size: 1.35rem;
    font-weight: 700;
    color: var(--ink);
    margin-bottom: 8px;
  }

  .modal-panel > p {
    font-size: 14px;
    color: var(--ink-muted);
    margin-bottom: 24px;
  }

  .form-group {
    margin-bottom: 18px;
  }

  .form-group label {
    display: block;
    font-size: 13px;
    font-weight: 600;
    color: var(--ink);
    margin-bottom: 6px;
  }

  .form-group input,
  .form-group select {
    width: 100%;
    height: 44px;
    padding: 0 14px;
    border: 1px solid var(--line);
    border-radius: var(--radius-md);
    background: var(--surface);
    font-size: 14px;
    color: var(--ink);
    outline: none;
    transition: border-color 0.2s, box-shadow 0.2s;
  }

  .form-group input:focus,
  .form-group select:focus {
    border-color: var(--primary);
    box-shadow: 0 0 0 3px rgba(11, 93, 97, 0.10);
  }

  .form-group input::placeholder {
    color: var(--ink-muted);
  }

  .modal-panel .btn-primary {
    width: 100%;
    height: 46px;
    margin-top: 8px;
  }

  .privacy-note {
    display: flex;
    align-items: center;
    justify-content: center;
    gap: 6px;
    font-size: 12px;
    color: var(--ink-muted);
    margin-top: 14px;
    text-align: center;
  }

  .privacy-note svg {
    width: 14px;
    height: 14px;
    flex-shrink: 0;
  }

  /* === 移动端菜单 === */
  .mobile-menu {
    display: none;
    position: fixed;
    top: 72px;
    left: 0;
    right: 0;
    z-index: 49;
    background: var(--surface);
    border-bottom: 1px solid var(--line);
    box-shadow: var(--shadow-md);
    padding: 16px 24px 24px;
  }

  .mobile-menu.open {
    display: block;
  }

  .mobile-menu .nav-link {
    display: block;
    padding: 12px 0;
    font-size: 16px;
    border-bottom: 1px solid var(--line);
  }

  .mobile-menu .nav-link:last-of-type {
    border-bottom: none;
  }

  .mobile-menu .mobile-actions {
    display: flex;
    flex-direction: column;
    gap: 10px;
    margin-top: 16px;
  }

  .mobile-menu .mobile-actions .btn {
    width: 100%;
  }

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

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

  @media (max-width: 768px) {
    .container {
      padding-left: 20px;
      padding-right: 20px;
    }

    .site-header {
      height: 64px;
    }

    .main-nav {
      display: none;
    }

    .header-actions .search-wrap,
    .header-actions .btn-ghost,
    .header-actions .btn-primary {
      display: none;
    }

    .menu-toggle {
      display: flex;
    }

    .article-header {
      padding: 28px 0 24px;
    }

    .breadcrumb .current {
      max-width: 200px;
    }

    .article-title {
      font-size: 1.5rem;
      line-height: 1.35;
    }

    .article-meta {
      gap: 12px;
      font-size: 13px;
    }

    .article-card {
      padding: 28px 22px;
      border-radius: 12px;
    }

    .article-content {
      font-size: 15px;
    }

    .article-content h2 {
      font-size: 1.3rem;
    }

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

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

    .cta-section {
      padding: 48px 0;
    }

    .cta-buttons {
      flex-direction: column;
    }

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

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

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

  @media (max-width: 520px) {
    .brand-text {
      font-size: 18px;
    }

    .article-meta {
      flex-direction: column;
      gap: 8px;
    }

    .article-card {
      padding: 22px 18px;
    }

    .modal-panel {
      padding: 28px 20px;
    }

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

  /* === 滚动条 === */
  ::selection {
    background: rgba(11, 93, 97, 0.18);
    color: var(--ink);
  }

  /* === 通用过渡 === */
  .article-card,
  .related-card,
  .modal-panel {
    transition: box-shadow 0.25s ease, transform 0.25s ease, border-color 0.25s ease;
  }

  /* === body锁定 === */
  body.modal-open {
    overflow: hidden;
  }