/* roulang page: index */
:root {
  --primary: #2C6E8A;
  --primary-soft: #E7F0F4;
  --accent: #A8864D;
  --bg: #F7FAFB;
  --surface: #FFFFFF;
  --text: #18262E;
  --text-secondary: #5A6B76;
  --border: #E3EBEF;
  --dark: #12222A;
  --radius: 12px;
  --radius-btn: 6px;
  --shadow-card: 0 1px 2px rgba(24,38,46,.04), 0 8px 24px rgba(24,38,46,.06);
  --shadow-hover: 0 4px 8px rgba(24,38,46,.06), 0 16px 40px rgba(24,38,46,.10);
  --transition: all .3s ease;
  --font-serif: 'Noto Serif SC', Georgia, serif;
  --font-sans: 'Noto Sans SC', -apple-system, BlinkMacSystemFont, sans-serif;
  --container-max: 1200px;
  --space-section: 110px;
}
* { margin:0; padding:0; box-sizing:border-box; }
html { scroll-behavior:smooth; }
body { font-family:var(--font-sans); background:var(--bg); color:var(--text); line-height:1.75; font-size:16px; -webkit-font-smoothing:antialiased; }
img { max-width:100%; display:block; }
a { color:inherit; text-decoration:none; transition:var(--transition); }
ul, ol { list-style:none; }
input, button { font-family:inherit; }
button { cursor:pointer; border:none; background:none; }
.container { max-width:var(--container-max); margin:0 auto; padding:0 24px; }
.section { padding:var(--space-section) 0; }
.section-light { background:var(--surface); }
.section-soft { background:var(--primary-soft); }

/* ===== Header Nav ===== */
.header { position:fixed; top:0; left:0; right:0; z-index:1000; height:76px; background:rgba(255,255,255,.12); backdrop-filter:blur(18px); -webkit-backdrop-filter:blur(18px); border-bottom:1px solid rgba(255,255,255,.28); transition:var(--transition); }
.header.scrolled { background:rgba(255,255,255,.96); box-shadow:0 1px 12px rgba(24,38,46,.08); border-bottom:1px solid transparent; }
.nav-wrap { height:76px; display:flex; align-items:center; justify-content:space-between; max-width:var(--container-max); margin:0 auto; padding:0 24px; }
.logo { display:flex; align-items:center; gap:10px; font-family:var(--font-serif); font-weight:700; font-size:20px; color:var(--text); letter-spacing:.02em; }
.logo-icon { width:38px; height:38px; display:flex; align-items:center; justify-content:center; background:var(--primary); border-radius:50%; color:#fff; font-size:16px; flex-shrink:0; }
.logo span { white-space:nowrap; }
.nav-menu { display:flex; align-items:center; gap:6px; }
.nav-menu a { padding:8px 16px; font-size:15px; font-weight:500; color:var(--text-secondary); border-radius:6px; position:relative; }
.nav-menu a:hover { color:var(--primary); background:rgba(44,110,138,.06); }
.nav-menu a.active { color:var(--primary); font-weight:600; }
.nav-menu a.active::after { content:''; position:absolute; left:16px; right:16px; bottom:2px; height:2px; background:var(--accent); border-radius:2px; }
.nav-right { display:flex; align-items:center; gap:14px; }
.nav-search { width:38px; height:38px; border-radius:50%; display:flex; align-items:center; justify-content:center; color:var(--text-secondary); background:rgba(255,255,255,.4); transition:var(--transition); }
.nav-search:hover { background:var(--primary-soft); color:var(--primary); }
.btn { display:inline-flex; align-items:center; justify-content:center; height:44px; padding:0 28px; border-radius:var(--radius-btn); font-size:15px; font-weight:500; transition:var(--transition); letter-spacing:.02em; }
.btn-primary { background:var(--primary); color:#fff; box-shadow:0 2px 8px rgba(44,110,138,.25); }
.btn-primary:hover { background:#245A73; transform:translateY(-1px); box-shadow:0 4px 16px rgba(44,110,138,.35); }
.btn-primary:active { transform:translateY(0); box-shadow:0 1px 4px rgba(44,110,138,.2); }
.btn-outline { background:transparent; border:1px solid var(--primary); color:var(--primary); }
.btn-outline:hover { background:var(--primary-soft); transform:translateY(-1px); }
.btn-outline:active { transform:translateY(0); }
.btn:focus-visible { outline:2px solid var(--primary); outline-offset:2px; }
.btn-right { display:inline-flex; align-items:center; gap:8px; }
.btn-dark { background:#fff; color:var(--dark); height:46px; }
.btn-dark:hover { background:var(--primary-soft); transform:translateY(-1px); box-shadow:0 6px 20px rgba(0,0,0,.2); }

.menu-toggle { display:none; width:40px; height:40px; border-radius:8px; align-items:center; justify-content:center; font-size:20px; color:var(--text-secondary); }
.menu-toggle:hover { background:var(--primary-soft); color:var(--primary); }

/* ===== Hero ===== */
.hero { min-height:100vh; position:relative; display:flex; align-items:center; background:linear-gradient(to bottom, rgba(13,30,42,.35) 0%, rgba(13,30,42,.15) 40%, var(--bg) 100%), url('/assets/images/backpic/back-1.webp') center/cover no-repeat; padding:120px 0 60px; }
.hero::before { content:''; position:absolute; top:0; left:0; right:0; height:120px; background:linear-gradient(to bottom, rgba(13,30,42,.45), transparent); z-index:1; }
.hero-content { position:relative; z-index:2; max-width:760px; }
.hero-badge { display:inline-flex; align-items:center; gap:8px; background:rgba(255,255,255,.18); backdrop-filter:blur(10px); border:1px solid rgba(255,255,255,.3); color:#fff; font-size:14px; padding:6px 18px; border-radius:999px; margin-bottom:24px; letter-spacing:.04em; }
.hero-badge i { color:var(--accent); }
.hero h1 { font-family:var(--font-serif); font-size:54px; font-weight:700; color:#fff; line-height:1.25; letter-spacing:.02em; text-shadow:0 2px 20px rgba(0,0,0,.2); margin-bottom:24px; }
.hero-sub { font-size:18px; color:rgba(255,255,255,.92); max-width:600px; line-height:1.8; margin-bottom:36px; text-shadow:0 1px 10px rgba(0,0,0,.2); }
.hero-cta { display:flex; align-items:center; gap:16px; flex-wrap:wrap; }
.hero-cta .btn { height:50px; padding:0 36px; font-size:16px; }
.hero-cta .btn-primary { background:var(--accent); box-shadow:0 4px 20px rgba(168,134,77,.4); }
.hero-cta .btn-primary:hover { background:#96743C; }
.hero-cta .btn-outline { border-color:rgba(255,255,255,.85); color:#fff; background:rgba(255,255,255,.08); backdrop-filter:blur(8px); }
.hero-cta .btn-outline:hover { background:rgba(255,255,255,.2); }

.hero-stats { position:relative; z-index:2; display:grid; grid-template-columns:repeat(4,1fr); gap:20px; margin-top:90px; padding:28px 36px; background:rgba(255,255,255,.85); backdrop-filter:blur(16px); border-radius:16px; box-shadow:0 8px 40px rgba(13,30,42,.16); border:1px solid rgba(255,255,255,.5); max-width:960px; }
.hero-stat { text-align:center; }
.hero-stat .num { font-family:var(--font-serif); font-size:38px; font-weight:700; color:var(--primary); line-height:1.2; font-variant-numeric:tabular-nums; display:flex; align-items:baseline; justify-content:center; }
.hero-stat .num i { font-style:normal; font-size:22px; color:var(--accent); margin-left:2px; }
.hero-stat .label { font-size:13px; color:var(--text-secondary); margin-top:4px; letter-spacing:.05em; }

/* ===== Pain Section ===== */
.pain-intro { font-family:var(--font-serif); font-size:26px; font-weight:600; line-height:1.6; color:var(--text); margin-bottom:44px; position:sticky; top:100px; }
.pain-intro .gold-line { width:52px; height:3px; background:var(--accent); margin-bottom:18px; border-radius:3px; display:block; }
.pain-list { display:flex; flex-direction:column; gap:38px; }
.pain-item { display:flex; gap:18px; position:relative; padding-left:10px; }
.pain-item .pain-num { font-family:var(--font-serif); font-size:42px; font-weight:700; color:#D4DDE2; line-height:1; min-width:70px; -webkit-text-stroke:1px var(--border); }
.pain-item .pain-body i { font-size:16px; color:var(--primary); margin-bottom:8px; }
.pain-item h3 { font-size:20px; font-weight:600; color:var(--text); margin-bottom:8px; }
.pain-item p { color:var(--text-secondary); font-size:15px; max-width:420px; }

/* ===== Solution Section ===== */
.solution-alternate { display:grid; grid-template-columns:1fr 1fr; gap:70px; align-items:center; }
.solution-media { position:relative; border-radius:16px; overflow:hidden; box-shadow:var(--shadow-card); aspect-ratio:4/3; }
.solution-media img { width:100%; height:100%; object-fit:cover; transition:transform .6s ease; }
.solution-media:hover img { transform:scale(1.04); }
.solution-media::after { content:''; position:absolute; inset:0; background:linear-gradient(135deg, rgba(44,110,138,.08), transparent 60%); border-radius:16px; pointer-events:none; }
.solution-text .badge { display:inline-flex; align-items:center; gap:6px; background:var(--primary-soft); color:var(--primary); font-size:13px; padding:5px 16px; border-radius:999px; font-weight:500; margin-bottom:16px; letter-spacing:.03em; }
.solution-text .badge.gold { background:rgba(168,134,77,.12); color:var(--accent); }
.solution-text h3 { font-family:var(--font-serif); font-size:30px; font-weight:700; margin-bottom:16px; line-height:1.4; }
.solution-text > p { color:var(--text-secondary); font-size:16px; margin-bottom:22px; }
.solution-points { display:flex; flex-direction:column; gap:12px; margin-bottom:28px; }
.solution-points li { display:flex; align-items:flex-start; gap:10px; font-size:15px; color:var(--text); }
.solution-points i { color:var(--accent); font-size:14px; margin-top:6px; }
.solution-link { color:var(--primary); font-size:15px; font-weight:500; display:inline-flex; align-items:center; gap:8px; }
.solution-link:hover { gap:12px; }

/* ===== Stats Section ===== */
.stats-section { background:var(--primary-soft); }
.stats-grid { display:grid; grid-template-columns:repeat(4,1fr); gap:28px; }
.stat-card { background:var(--surface); border-radius:var(--radius); padding:36px 28px; text-align:center; box-shadow:var(--shadow-card); transition:var(--transition); border:1px solid rgba(255,255,255,.8); }
.stat-card:hover { transform:translateY(-4px); box-shadow:var(--shadow-hover); }
.stat-card .num { font-family:var(--font-serif); font-size:64px; font-weight:700; color:var(--accent); line-height:1.3; font-variant-numeric:tabular-nums; }
.stat-card .label { font-size:15px; color:var(--text); font-weight:500; margin-top:8px; }
.stat-card .note { font-size:13px; color:var(--text-secondary); margin-top:4px; }

/* ===== Testimonial Section ===== */
.testimonial-header { display:flex; justify-content:space-between; align-items:flex-end; margin-bottom:52px; }
.testimonial-header h2 { font-family:var(--font-serif); font-size:36px; font-weight:700; }
.testimonial-header .desc { color:var(--text-secondary); font-size:15px; max-width:360px; }
.timeline-deco { width:100%; height:1px; background:linear-gradient(to right, rgba(168,134,77,.5), transparent); margin-bottom:48px; }

.testimonial-grid { display:grid; grid-template-columns:1fr 1fr; gap:28px; }
.testimonial-main { background:var(--surface); border-radius:var(--radius); padding:44px; position:relative; box-shadow:var(--shadow-card); }
.testimonial-main::before { content:'“'; position:absolute; top:18px; left:26px; font-family:var(--font-serif); font-size:88px; color:var(--accent); opacity:.35; line-height:1; }
.testimonial-main .quote { font-family:var(--font-serif); font-size:20px; font-weight:500; line-height:1.8; color:var(--text); margin:20px 0 24px; }
.testimonial-main .user { display:flex; align-items:center; gap:14px; }
.testimonial-main .avatar { width:48px; height:48px; border-radius:50%; background:var(--primary-soft); display:flex; align-items:center; justify-content:center; font-size:18px; color:var(--primary); }
.testimonial-main .user-name { font-size:15px; font-weight:600; }
.testimonial-main .user-title { font-size:13px; color:var(--text-secondary); }

.testimonial-side { display:flex; flex-direction:column; gap:28px; }
.testimonial-card { background:var(--surface); border-radius:var(--radius); padding:26px 30px; box-shadow:var(--shadow-card); display:flex; gap:18px; align-items:flex-start; transition:var(--transition); border-left:3px solid transparent; }
.testimonial-card:hover { transform:translateX(4px); box-shadow:var(--shadow-hover); border-left-color:var(--accent); }
.testimonial-card .avatar { width:42px; height:42px; border-radius:50%; background:var(--primary-soft); display:flex; align-items:center; justify-content:center; font-size:15px; color:var(--primary); flex-shrink:0; }
.testimonial-card .quote { font-size:14px; color:var(--text); line-height:1.7; margin-bottom:8px; }
.testimonial-card .user-name { font-size:13px; font-weight:600; color:var(--primary); }
.testimonial-card .user-title { font-size:12px; color:var(--text-secondary); }

/* ===== Blog/CMS Section ===== */
.blog-section { background:var(--surface); }
.blog-head { display:flex; justify-content:space-between; align-items:center; margin-bottom:48px; }
.blog-head h2 { font-family:var(--font-serif); font-size:36px; font-weight:700; }
.blog-head .link-view { color:var(--primary); font-size:15px; font-weight:500; display:inline-flex; align-items:center; gap:8px; }
.blog-head .link-view:hover i { transform:translateX(4px); }
.blog-grid { display:grid; grid-template-columns:1.2fr 1fr; gap:32px; }
.blog-featured { position:relative; border-radius:var(--radius); overflow:hidden; box-shadow:var(--shadow-card); background:var(--bg); }
.blog-featured img { width:100%; aspect-ratio:16/9; object-fit:cover; transition:transform .6s ease; }
.blog-featured:hover img { transform:scale(1.03); }
.blog-featured .blog-info { padding:28px 30px; }
.blog-cat { display:inline-block; background:var(--primary-soft); color:var(--primary); font-size:12px; padding:4px 12px; border-radius:999px; margin-bottom:12px; font-weight:500; }
.blog-featured .blog-title { font-family:var(--font-serif); font-size:22px; font-weight:700; line-height:1.5; margin-bottom:10px; display:-webkit-box; -webkit-line-clamp:2; -webkit-box-orient:vertical; overflow:hidden; }
.blog-featured .blog-title:hover { color:var(--primary); }
.blog-featured .blog-summary { color:var(--text-secondary); font-size:14px; line-height:1.7; margin-bottom:14px; display:-webkit-box; -webkit-line-clamp:2; -webkit-box-orient:vertical; overflow:hidden; }
.blog-meta { display:flex; align-items:center; gap:14px; font-size:13px; color:var(--text-secondary); }
.blog-meta i { color:var(--accent); margin-right:4px; }
.blog-side-list { display:flex; flex-direction:column; gap:0; }
.blog-side-item { display:flex; align-items:flex-start; gap:16px; padding:18px 0; border-bottom:1px solid var(--border); transition:var(--transition); }
.blog-side-item:first-child { padding-top:0; }
.blog-side-item:last-child { border-bottom:none; }
.blog-side-item:hover { padding-left:6px; }
.blog-side-item .thumb { width:88px; height:64px; border-radius:8px; object-fit:cover; flex-shrink:0; }
.blog-side-item .side-info { flex:1; min-width:0; }
.blog-side-item .tit { font-size:15px; font-weight:600; line-height:1.5; color:var(--text); display:-webkit-box; -webkit-line-clamp:1; -webkit-box-orient:vertical; overflow:hidden; margin-bottom:6px; }
.blog-side-item .tit:hover { color:var(--primary); }
.blog-side-item .side-summary { font-size:13px; color:var(--text-secondary); line-height:1.5; display:-webkit-box; -webkit-line-clamp:1; -webkit-box-orient:vertical; overflow:hidden; margin-bottom:6px; }
.blog-side-item .time { font-size:12px; color:var(--text-secondary); display:flex; align-items:center; gap:6px; }
.blog-side-item .time i { font-size:12px; color:var(--accent); }
.empty-state { text-align:center; padding:50px 20px; background:var(--bg); border-radius:var(--radius); color:var(--text-secondary); font-size:14px; }
.empty-state i { display:block; font-size:36px; color:var(--accent); margin-bottom:12px; opacity:.6; }

/* ===== FAQ Section ===== */
.faq-wrap { max-width:820px; margin:0 auto; }
.faq-accordion { display:flex; flex-direction:column; gap:14px; }
.faq-item { background:var(--surface); border-radius:var(--radius); box-shadow:var(--shadow-card); overflow:hidden; border:1px solid rgba(227,235,239,.6); }
.faq-item.active { box-shadow:var(--shadow-hover); border-color:rgba(44,110,138,.2); }
.faq-q { width:100%; display:flex; justify-content:space-between; align-items:center; padding:20px 28px; font-size:17px; font-weight:500; color:var(--text); text-align:left; gap:16px; transition:var(--transition); }
.faq-q:hover { color:var(--primary); }
.faq-q .icon { width:28px; height:28px; border-radius:50%; background:var(--primary-soft); display:flex; align-items:center; justify-content:center; font-size:14px; color:var(--primary); flex-shrink:0; transition:transform .35s ease; }
.faq-item.active .faq-q .icon { transform:rotate(45deg); background:var(--accent); color:#fff; }
.faq-a { max-height:0; overflow:hidden; transition:max-height .4s ease; }
.faq-a-inner { padding:0 28px 22px; color:var(--text-secondary); font-size:14px; line-height:1.8; }

/* ===== CTA Section ===== */
.cta-section { background:var(--dark); position:relative; overflow:hidden; padding:80px 0; }
.cta-section::before { content:'\f54b'; font-family:'Font Awesome 6 Free'; font-weight:900; position:absolute; right:40px; top:50%; transform:translateY(-50%); font-size:220px; color:rgba(168,134,77,.08); line-height:1; }
.cta-inner { position:relative; z-index:2; text-align:center; max-width:720px; margin:0 auto; }
.cta-inner .icon-anchor { width:56px; height:56px; border-radius:50%; border:2px solid var(--accent); display:flex; align-items:center; justify-content:center; font-size:22px; color:var(--accent); margin:0 auto 24px; background:rgba(168,134,77,.1); }
.cta-inner h2 { font-family:var(--font-serif); color:#fff; font-size:32px; font-weight:700; margin-bottom:14px; line-height:1.4; }
.cta-inner p { color:#A7B7BF; font-size:15px; margin-bottom:30px; line-height:1.8; }
.cta-inner .btn-dark { background:var(--accent); color:#fff; box-shadow:0 4px 20px rgba(168,134,77,.3); }
.cta-inner .btn-dark:hover { background:#96743C; color:#fff; }

/* ===== Footer ===== */
.footer { background:var(--dark); color:#A7B7BF; padding:72px 0 0; }
.footer-grid { display:grid; grid-template-columns:1.4fr 1fr 1fr 1.3fr; gap:44px; padding-bottom:56px; border-bottom:1px solid rgba(255,255,255,.08); }
.footer-brand .logo { color:#fff; margin-bottom:14px; }
.footer-brand .logo-icon { background:var(--accent); }
.footer-brand p { font-size:14px; line-height:1.8; max-width:280px; }
.footer-qr { width:110px; height:110px; border-radius:8px; border:1px solid rgba(255,255,255,.14); display:flex; align-items:center; justify-content:center; margin-top:20px; background:rgba(255,255,255,.05); flex-direction:column; gap:8px; font-size:12px; }
.footer-qr i { font-size:34px; color:var(--accent); }
.footer h4 { color:#fff; font-size:16px; font-weight:600; margin-bottom:18px; letter-spacing:.04em; }
.footer-links li { margin-bottom:10px; }
.footer-links a { font-size:14px; color:#A7B7BF; display:inline-flex; align-items:center; gap:8px; }
.footer-links a i { font-size:12px; color:var(--accent); transition:transform .3s ease; }
.footer-links a:hover { color:#fff; padding-left:4px; }
.footer-links a:hover i { transform:translateX(3px); }
.footer-contact li { display:flex; align-items:flex-start; gap:12px; margin-bottom:14px; font-size:14px; }
.footer-contact i { color:var(--accent); margin-top:4px; font-size:15px; }
.footer-bottom { padding:24px 0; display:flex; justify-content:space-between; align-items:center; flex-wrap:wrap; gap:10px; font-size:13px; border-top:1px solid rgba(255,255,255,.06); }
.footer-bottom a:hover { color:#fff; }

.back-top { position:fixed; bottom:30px; right:30px; z-index:99; width:44px; height:44px; border-radius:50%; background:var(--primary); color:#fff; display:flex; align-items:center; justify-content:center; box-shadow:0 4px 16px rgba(44,110,138,.35); opacity:0; pointer-events:none; transform:translateY(20px); transition:var(--transition); }
.back-top.visible { opacity:1; pointer-events:auto; transform:translateY(0); }
.back-top:hover { background:#245A73; }

/* ===== Responsive ===== */
@media (max-width:1023px) {
  .nav-menu { display:none; }
  .menu-toggle { display:flex; }
  .nav-menu.open { display:flex; position:fixed; top:76px; left:0; right:0; background:rgba(255,255,255,.98); flex-direction:column; align-items:flex-start; padding:20px 24px 28px; gap:4px; box-shadow:0 12px 40px rgba(0,0,0,.1); border-bottom:1px solid var(--border); backdrop-filter:blur(20px); }
  .nav-menu.open a { width:100%; padding:14px 16px; font-size:16px; border-radius:8px; }
  .nav-menu.open a.active::after { display:none; }
  .nav-menu.open a.active { background:var(--primary-soft); }
  .solution-alternate { grid-template-columns:1fr; gap:36px; }
  .stats-grid { grid-template-columns:repeat(2,1fr); }
  .testimonial-grid { grid-template-columns:1fr; }
  .blog-grid { grid-template-columns:1fr; }
  .footer-grid { grid-template-columns:1fr 1fr; }
  .hero h1 { font-size:40px; }
}
@media (max-width:767px) {
  :root { --space-section:60px; }
  .hero { min-height:auto; padding:110px 0 50px; background:linear-gradient(to bottom, rgba(13,30,42,.45) 0%, rgba(13,30,42,.25) 50%, var(--bg) 100%), url('/assets/images/backpic/back-1.webp') center/cover no-repeat; }
  .hero h1 { font-size:32px; }
  .hero-sub { font-size:16px; }
  .hero-stats { grid-template-columns:repeat(2,1fr); gap:14px; padding:22px; margin-top:50px; }
  .hero-stat .num { font-size:30px; }
  .section { padding:60px 0; }
  .pain-intro { position: relative; top:auto; }
  .stats-grid { grid-template-columns:1fr 1fr; gap:14px; }
  .stat-card { padding:24px 16px; }
  .stat-card .num { font-size:42px; }
  .testimonial-header { flex-direction:column; align-items:flex-start; gap:10px; margin-bottom:36px; }
  .testimonial-main { padding:32px 24px; }
  .testimonial-card { padding:22px; }
  .blog-head { flex-direction:column; align-items:flex-start; gap:10px; margin-bottom:30px; }
  .blog-featured .blog-info { padding:20px; }
  .blog-side-item { padding:16px 0; }
  .faq-q { padding:16px 20px; font-size:15px; }
  .faq-a-inner { padding:0 20px 18px; }
  .footer-grid { grid-template-columns:1fr; gap:30px; padding-bottom:40px; }
  .footer-bottom { flex-direction:column; align-items:center; text-align:center; }
  .container { padding:0 20px; }
  .hero-cta .btn { height:44px; padding:0 24px; font-size:15px; }
  .back-top { bottom:16px; right:16px; }
}
@media (min-width:768px) and (max-width:1023px) {
  .solution-alternate { grid-template-columns:1fr; }
}

/* roulang page: article */
:root {
  --primary: #2C6E8A;
  --primary-dark: #1D566E;
  --primary-soft: #E7F0F4;
  --accent: #A8864D;
  --accent-light: #F2EAD9;
  --bg: #F7FAFB;
  --surface: #FFFFFF;
  --text: #18262E;
  --text-secondary: #5A6B76;
  --border: #E3EBEF;
  --dark: #12222A;
  --dark-text: #A7B7BF;
  --white: #FFFFFF;
  --radius: 12px;
  --radius-sm: 6px;
  --radius-lg: 20px;
  --shadow: 0 1px 2px rgba(24,38,46,.04), 0 8px 24px rgba(24,38,46,.06);
  --shadow-lg: 0 4px 8px rgba(24,38,46,.06), 0 16px 40px rgba(24,38,46,.10);
  --transition: all .3s ease;
  --container: 1200px;
  --font-serif: 'Noto Serif SC', 'Songti SC', serif;
  --font-sans: 'Noto Sans SC', 'PingFang SC', 'Microsoft YaHei', sans-serif;
}

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

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

body {
  font-family: var(--font-sans);
  font-size: 16px;
  line-height: 1.75;
  color: var(--text);
  background: var(--bg);
  -webkit-font-smoothing: antialiased;
  -moz-osx-font-smoothing: grayscale;
}

img {
  max-width: 100%;
  display: block;
  border: 0;
}

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

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

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

input {
  font-family: inherit;
}

ul,
ol {
  list-style: none;
}

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

/* ===== Buttons ===== */
.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  height: 44px;
  padding: 0 28px;
  border-radius: var(--radius-sm);
  font-size: 15px;
  font-weight: 500;
  letter-spacing: .02em;
  transition: var(--transition);
  white-space: nowrap;
  border: 1px solid transparent;
}

.btn-primary {
  background: var(--primary);
  color: var(--white);
  box-shadow: 0 2px 8px rgba(44,110,138,.25);
}

.btn-primary:hover {
  background: var(--primary-dark);
  color: var(--white);
  transform: translateY(-1px);
  box-shadow: 0 6px 16px rgba(44,110,138,.32);
}

.btn-primary:active {
  transform: translateY(0);
  box-shadow: 0 2px 6px rgba(44,110,138,.2);
}

.btn-primary:focus-visible,
.btn-outline:focus-visible,
.btn-light:focus-visible,
.nav-toggle:focus-visible,
.header-search:focus-visible {
  outline: 2px solid var(--primary);
  outline-offset: 2px;
}

.btn-sm {
  height: 38px;
  padding: 0 22px;
  font-size: 14px;
}

.btn-light {
  background: var(--white);
  color: var(--dark);
  box-shadow: 0 2px 12px rgba(0,0,0,.18);
}

.btn-light:hover {
  background: var(--primary-soft);
  color: var(--primary-dark);
  transform: translateY(-1px);
  box-shadow: 0 8px 24px rgba(0,0,0,.22);
}

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

.btn-outline:hover {
  background: var(--primary-soft);
  color: var(--primary-dark);
}

/* ===== Header ===== */
.site-header {
  position: fixed;
  top: 0;
  left: 0;
  right: 0;
  z-index: 1000;
  background: rgba(255,255,255,.12);
  backdrop-filter: blur(18px);
  -webkit-backdrop-filter: blur(18px);
  border-bottom: 1px solid rgba(255,255,255,.18);
  transition: var(--transition);
  height: 72px;
}

.site-header.scrolled {
  background: rgba(255,255,255,.94);
  box-shadow: 0 1px 12px rgba(24,38,46,.08);
  border-bottom-color: var(--border);
  height: 64px;
}

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

.logo {
  display: inline-flex;
  align-items: center;
  gap: 10px;
  font-family: var(--font-serif);
  font-weight: 700;
  font-size: 22px;
  color: var(--text);
  letter-spacing: .01em;
  flex-shrink: 0;
}

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

.site-header:not(.scrolled) .logo {
  color: var(--white);
}

.site-header:not(.scrolled) .logo:hover {
  color: var(--white);
}

.logo-icon {
  width: 38px;
  height: 38px;
  border-radius: 10px;
  background: var(--primary);
  color: var(--white);
  display: inline-flex;
  align-items: center;
  justify-content: center;
  font-size: 16px;
  box-shadow: 0 2px 8px rgba(44,110,138,.35);
  flex-shrink: 0;
}

.nav-menu {
  display: flex;
  align-items: center;
  gap: 34px;
}

.nav-menu a {
  position: relative;
  font-size: 15px;
  font-weight: 500;
  color: rgba(255,255,255,.92);
  padding: 8px 0;
  letter-spacing: .02em;
  transition: var(--transition);
  white-space: nowrap;
}

.site-header.scrolled .nav-menu a {
  color: var(--text);
}

.site-header.scrolled .nav-menu a:hover {
  color: var(--primary);
}

.nav-menu a:hover {
  color: var(--white);
  opacity: 1;
}

.nav-menu a.active {
  color: var(--accent);
}

.site-header.scrolled .nav-menu a.active {
  color: var(--primary);
}

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

.site-header.scrolled .nav-menu a.active::after {
  background: var(--accent);
}

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

.header-search {
  width: 38px;
  height: 38px;
  border-radius: 50%;
  display: inline-flex;
  align-items: center;
  justify-content: center;
  color: rgba(255,255,255,.92);
  font-size: 15px;
  transition: var(--transition);
}

.site-header.scrolled .header-search {
  color: var(--text);
}

.header-search:hover {
  background: rgba(255,255,255,.14);
  color: var(--white);
}

.site-header.scrolled .header-search:hover {
  background: var(--primary-soft);
  color: var(--primary);
}

.nav-toggle {
  display: none;
  flex-direction: column;
  gap: 5px;
  padding: 6px;
  border-radius: var(--radius-sm);
  width: 38px;
  height: 38px;
  align-items: center;
  justify-content: center;
  background: transparent;
  transition: var(--transition);
}

.nav-toggle span {
  width: 22px;
  height: 2px;
  background: var(--text);
  border-radius: 2px;
  transition: var(--transition);
  display: block;
}

.site-header:not(.scrolled) .nav-toggle span {
  background: var(--white);
}

.nav-toggle:hover {
  background: rgba(255,255,255,.14);
}

.site-header.scrolled .nav-toggle:hover {
  background: var(--primary-soft);
}

.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 Hero ===== */
.article-hero {
  position: relative;
  min-height: 420px;
  display: flex;
  align-items: flex-end;
  background: var(--dark);
  overflow: hidden;
  padding-top: 120px;
  padding-bottom: 56px;
}

.article-hero-bg {
  position: absolute;
  inset: 0;
  background-size: cover;
  background-position: center 60%;
  opacity: .42;
}

.article-hero-overlay {
  position: absolute;
  inset: 0;
  background: linear-gradient(180deg, rgba(13,30,42,.55) 0%, rgba(13,30,42,.72) 60%, rgba(13,30,42,.88) 100%);
}

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

.breadcrumb {
  display: flex;
  align-items: center;
  flex-wrap: wrap;
  gap: 8px;
  font-size: 13px;
  color: rgba(255,255,255,.72);
  margin-bottom: 22px;
}

.breadcrumb a {
  color: rgba(255,255,255,.82);
  transition: var(--transition);
}

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

.breadcrumb i {
  font-size: 10px;
  color: rgba(255,255,255,.4);
}

.breadcrumb .current {
  color: var(--accent);
  max-width: 380px;
  overflow: hidden;
  text-overflow: ellipsis;
  white-space: nowrap;
}

.article-hero h1 {
  font-family: var(--font-serif);
  font-size: 40px;
  font-weight: 700;
  line-height: 1.35;
  color: var(--white);
  margin-bottom: 18px;
  max-width: 860px;
  letter-spacing: .02em;
}

.article-meta-row {
  display: flex;
  align-items: center;
  flex-wrap: wrap;
  gap: 20px;
  padding-bottom: 4px;
}

.meta-item {
  display: inline-flex;
  align-items: center;
  gap: 6px;
  font-size: 14px;
  color: rgba(255,255,255,.82);
}

.meta-item i {
  color: var(--accent);
  font-size: 13px;
}

.category-badge {
  display: inline-block;
  padding: 4px 14px;
  background: var(--accent);
  color: var(--white);
  border-radius: 999px;
  font-size: 13px;
  font-weight: 500;
  letter-spacing: .04em;
}

/* ===== Article Section ===== */
.article-section {
  padding: 64px 0 40px;
}

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

.article-body {
  max-width: 720px;
  margin: 0 auto;
  background: var(--surface);
  border-radius: var(--radius);
  padding: 56px 60px;
  box-shadow: var(--shadow);
}

.article-body > * + * {
  margin-top: 24px;
}

.article-body p {
  font-size: 17px;
  line-height: 1.85;
  color: var(--text);
  letter-spacing: .015em;
}

.article-body p:first-of-type::first-letter {
  font-family: var(--font-serif);
  font-size: 42px;
  font-weight: 700;
  color: var(--primary);
  float: left;
  line-height: 1;
  padding: 8px 10px 0 0;
}

.article-body h2 {
  font-family: var(--font-serif);
  font-size: 28px;
  font-weight: 700;
  color: var(--text);
  margin-top: 44px;
  margin-bottom: 18px;
  padding-bottom: 14px;
  border-bottom: 1px solid var(--border);
  position: relative;
}

.article-body h2::after {
  content: '';
  position: absolute;
  bottom: -1px;
  left: 0;
  width: 48px;
  height: 2px;
  background: var(--accent);
  border-radius: 2px;
}

.article-body h3 {
  font-family: var(--font-serif);
  font-size: 22px;
  font-weight: 600;
  color: var(--text);
  margin-top: 36px;
  margin-bottom: 14px;
  letter-spacing: .015em;
}

.article-body h4 {
  font-family: var(--font-serif);
  font-size: 18px;
  font-weight: 600;
  color: var(--text);
  margin-top: 28px;
  margin-bottom: 12px;
}

.article-body a {
  color: var(--primary);
  border-bottom: 1px solid var(--primary-soft);
  transition: var(--transition);
}

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

.article-body img {
  border-radius: var(--radius);
  box-shadow: var(--shadow);
  margin: 28px 0 8px;
}

.article-body img + em {
  display: block;
  text-align: center;
  font-size: 13px;
  color: var(--text-secondary);
  font-style: normal;
  margin-top: 10px;
}

.article-body blockquote {
  border-left: 3px solid var(--primary);
  background: var(--primary-soft);
  padding: 20px 24px;
  border-radius: 0 var(--radius) var(--radius) 0;
  font-family: var(--font-serif);
  font-size: 17px;
  line-height: 1.75;
  color: var(--primary-dark);
  margin: 32px 0;
}

.article-body blockquote p {
  font-size: 16px;
  line-height: 1.75;
}

.article-body ul,
.article-body ol {
  margin: 24px 0;
  padding-left: 8px;
}

.article-body ul li {
  position: relative;
  padding-left: 28px;
  margin-bottom: 10px;
  font-size: 16px;
  line-height: 1.75;
}

.article-body ul li::before {
  content: '\f192';
  font-family: 'Font Awesome 6 Free';
  font-weight: 400;
  font-size: 10px;
  color: var(--accent);
  position: absolute;
  left: 0;
  top: 8px;
}

.article-body ol {
  counter-reset: article-ol;
}

.article-body ol li {
  position: relative;
  padding-left: 36px;
  margin-bottom: 10px;
  font-size: 16px;
  line-height: 1.75;
  counter-increment: article-ol;
}

.article-body ol li::before {
  content: counter(article-ol, decimal-leading-zero);
  font-family: var(--font-serif);
  font-weight: 700;
  font-size: 14px;
  color: var(--primary);
  position: absolute;
  left: 0;
  top: 1px;
}

.article-body code {
  font-family: 'SFMono-Regular', Consolas, 'Liberation Mono', monospace;
  font-size: 14px;
  background: var(--primary-soft);
  padding: 3px 8px;
  border-radius: 4px;
  color: var(--primary-dark);
}

.article-body pre {
  background: var(--dark);
  color: #D6E4EC;
  padding: 24px;
  border-radius: var(--radius);
  overflow-x: auto;
  font-size: 14px;
  line-height: 1.7;
  margin: 28px 0;
}

.article-body pre code {
  background: none;
  color: inherit;
  padding: 0;
  font-size: inherit;
}

.article-body hr {
  border: none;
  border-top: 1px solid var(--border);
  margin: 40px 0;
}

/* ===== Empty State ===== */
.article-empty {
  max-width: 720px;
  margin: 0 auto;
  text-align: center;
  background: var(--surface);
  border-radius: var(--radius);
  padding: 80px 40px;
  box-shadow: var(--shadow);
}

.article-empty .empty-icon {
  width: 72px;
  height: 72px;
  margin: 0 auto 24px;
  border-radius: 50%;
  background: var(--primary-soft);
  color: var(--primary);
  font-size: 28px;
  display: flex;
  align-items: center;
  justify-content: center;
}

.article-empty h3 {
  font-family: var(--font-serif);
  font-size: 24px;
  color: var(--text);
  margin-bottom: 12px;
}

.article-empty p {
  color: var(--text-secondary);
  margin-bottom: 28px;
}

/* ===== Article Extra ===== */
.article-extra-section {
  padding: 24px 0 56px;
}

.article-extra-bar {
  max-width: 720px;
  margin: 0 auto;
  display: flex;
  flex-direction: column;
  gap: 24px;
}

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

.tag {
  display: inline-block;
  padding: 5px 14px;
  background: var(--primary-soft);
  color: var(--primary);
  border-radius: 999px;
  font-size: 13px;
  font-weight: 500;
  transition: var(--transition);
}

.tag:hover {
  background: var(--primary);
  color: var(--white);
  cursor: default;
}

.article-prev-next {
  display: flex;
  justify-content: space-between;
  gap: 16px;
  border-top: 1px solid var(--border);
  padding-top: 24px;
  margin-top: 8px;
  flex-wrap: wrap;
}

.article-prev-next a {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  font-size: 14px;
  color: var(--text-secondary);
  transition: var(--transition);
  max-width: 48%;
}

.article-prev-next a:hover {
  color: var(--primary);
}

.article-prev-next a i {
  font-size: 12px;
  color: var(--accent);
}

/* ===== Related Section ===== */
.related-section {
  padding: 72px 0;
  background: var(--primary-soft);
}

.section-head {
  display: flex;
  align-items: center;
  justify-content: space-between;
  margin-bottom: 40px;
  gap: 20px;
  flex-wrap: wrap;
}

.section-head h2 {
  font-family: var(--font-serif);
  font-size: 32px;
  font-weight: 700;
  color: var(--text);
  position: relative;
  padding-left: 18px;
}

.section-head h2::before {
  content: '';
  position: absolute;
  left: 0;
  top: 4px;
  bottom: 4px;
  width: 4px;
  background: var(--accent);
  border-radius: 2px;
}

.section-link {
  font-size: 15px;
  color: var(--primary);
  display: inline-flex;
  align-items: center;
  gap: 6px;
  font-weight: 500;
  transition: var(--transition);
}

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

.section-link i {
  font-size: 12px;
  transition: var(--transition);
}

.related-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 28px;
}

.related-card {
  display: block;
  background: var(--surface);
  border-radius: var(--radius);
  overflow: hidden;
  border: 1px solid var(--border);
  box-shadow: var(--shadow);
  transition: var(--transition);
}

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

.related-card-img {
  aspect-ratio: 16/9;
  overflow: hidden;
}

.related-card-img img {
  width: 100%;
  height: 100%;
  object-fit: cover;
  transition: transform .5s ease;
}

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

.related-card-body {
  padding: 24px 26px;
}

.related-card-body h3 {
  font-family: var(--font-serif);
  font-size: 18px;
  font-weight: 600;
  color: var(--text);
  margin-bottom: 10px;
  transition: var(--transition);
}

.related-card:hover .related-card-body h3 {
  color: var(--primary);
}

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

/* ===== CTA Section ===== */
.cta-section {
  padding: 80px 0;
  background: var(--dark);
  position: relative;
  overflow: hidden;
}

.cta-section::before {
  content: '\f0a3';
  font-family: 'Font Awesome 6 Free';
  font-weight: 900;
  position: absolute;
  right: -40px;
  bottom: -40px;
  font-size: 240px;
  color: rgba(168,134,77,.08);
  transform: rotate(-12deg);
}

.cta-inner {
  position: relative;
  z-index: 2;
  text-align: center;
  max-width: 640px;
  margin: 0 auto;
}

.cta-compact {
  padding: 72px 0;
}

.cta-icon {
  width: 64px;
  height: 64px;
  margin: 0 auto 22px;
  border-radius: 50%;
  background: rgba(168,134,77,.15);
  color: var(--accent);
  border: 1px solid rgba(168,134,77,.35);
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 24px;
}

.cta-inner h2 {
  font-family: var(--font-serif);
  font-size: 34px;
  font-weight: 700;
  color: var(--white);
  margin-bottom: 16px;
}

.cta-inner p {
  font-size: 16px;
  color: var(--dark-text);
  line-height: 1.8;
  margin-bottom: 32px;
}

/* ===== Footer ===== */
.footer {
  background: var(--dark);
  color: var(--dark-text);
  padding: 80px 0 28px;
  border-top: 3px solid var(--accent);
}

.footer-grid {
  display: grid;
  grid-template-columns: 1.4fr 1fr 1fr 1.2fr;
  gap: 48px;
  margin-bottom: 56px;
}

.footer .logo {
  color: var(--white);
  font-size: 20px;
  margin-bottom: 16px;
  display: inline-flex;
}

.footer-brand p {
  font-size: 14px;
  line-height: 1.8;
  color: var(--dark-text);
  margin: 16px 0 20px;
}

.footer-qr {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  font-size: 13px;
  color: var(--dark-text);
  padding: 8px 16px;
  border: 1px solid rgba(255,255,255,.12);
  border-radius: var(--radius-sm);
  transition: var(--transition);
}

.footer-qr:hover {
  border-color: var(--accent);
  color: var(--white);
  cursor: default;
}

.footer-qr i {
  color: var(--accent);
  font-size: 16px;
}

.footer h4 {
  font-family: var(--font-serif);
  font-size: 16px;
  color: var(--white);
  margin-bottom: 20px;
  font-weight: 600;
  letter-spacing: .03em;
}

.footer-links li,
.footer-contact li {
  margin-bottom: 12px;
}

.footer-links a {
  color: var(--dark-text);
  font-size: 14px;
  display: inline-flex;
  align-items: center;
  gap: 6px;
  transition: var(--transition);
}

.footer-links a i {
  font-size: 10px;
  color: var(--accent);
  transition: var(--transition);
}

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

.footer-contact li {
  font-size: 14px;
  display: flex;
  align-items: flex-start;
  gap: 10px;
}

.footer-contact li i {
  color: var(--accent);
  font-size: 13px;
  margin-top: 4px;
}

.footer-bottom {
  border-top: 1px solid rgba(255,255,255,.08);
  padding-top: 24px;
  display: flex;
  justify-content: space-between;
  align-items: center;
  gap: 16px;
  flex-wrap: wrap;
  font-size: 13px;
  color: rgba(255,255,255,.4);
}

.footer-bottom a {
  color: rgba(255,255,255,.4);
  transition: var(--transition);
}

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

/* ===== Responsive ===== */
@media (max-width: 1023px) {
  .nav-menu {
    gap: 20px;
  }

  .nav-menu a {
    font-size: 14px;
  }

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

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

@media (max-width: 767px) {
  .container {
    padding-left: 20px;
    padding-right: 20px;
  }

  .site-header {
    height: 60px;
  }

  .site-header.scrolled {
    height: 56px;
  }

  .logo {
    font-size: 18px;
  }

  .logo-icon {
    width: 32px;
    height: 32px;
    font-size: 14px;
    border-radius: 8px;
  }

  .nav-menu {
    position: fixed;
    top: 60px;
    left: 0;
    right: 0;
    background: var(--surface);
    flex-direction: column;
    align-items: flex-start;
    padding: 24px 24px 36px;
    box-shadow: 0 16px 40px rgba(24,38,46,.12);
    gap: 4px;
    transform: translateY(-120%);
    opacity: 0;
    transition: transform .35s ease, opacity .3s ease;
    border-radius: 0 0 16px 16px;
    z-index: 999;
  }

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

  .nav-menu a {
    display: block;
    width: 100%;
    padding: 12px 0;
    font-size: 16px;
    color: var(--text) !important;
    border-bottom: 1px solid rgba(24,38,46,.06);
  }

  .nav-menu a:last-child {
    border-bottom: none;
  }

  .nav-menu a.active {
    color: var(--primary) !important;
  }

  .nav-menu a.active::after {
    display: none;
  }

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

  .header-search {
    display: none;
  }

  .header-actions .btn {
    padding: 0 16px;
    height: 36px;
    font-size: 13px;
  }

  .article-hero {
    min-height: 340px;
    padding-top: 92px;
    padding-bottom: 40px;
  }

  .article-hero h1 {
    font-size: 30px;
    line-height: 1.4;
  }

  .article-meta-row {
    gap: 12px;
  }

  .meta-item {
    font-size: 13px;
  }

  .breadcrumb .current {
    max-width: 160px;
  }

  .article-section {
    padding: 40px 0 32px;
  }

  .article-container {
    padding-left: 16px;
    padding-right: 16px;
  }

  .article-body {
    padding: 32px 24px;
    border-radius: 10px;
  }

  .article-body p {
    font-size: 16px;
  }

  .article-body h2 {
    font-size: 24px;
  }

  .article-body h3 {
    font-size: 20px;
  }

  .article-body blockquote {
    padding: 16px 18px;
    font-size: 16px;
  }

  .article-extra-section {
    padding: 16px 0 40px;
  }

  .article-prev-next {
    flex-direction: column;
    gap: 12px;
  }

  .article-prev-next a {
    max-width: 100%;
    font-size: 13px;
  }

  .related-section {
    padding: 56px 0;
  }

  .section-head h2 {
    font-size: 26px;
  }

  .related-grid {
    grid-template-columns: 1fr;
    gap: 20px;
  }

  .related-card-body {
    padding: 20px 22px;
  }

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

  .cta-inner h2 {
    font-size: 27px;
  }

  .cta-inner p {
    font-size: 15px;
  }

  .footer {
    padding: 56px 0 28px;
  }

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

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

  .article-empty {
    padding: 56px 24px;
  }
}

@media (max-width: 520px) {
  .article-hero h1 {
    font-size: 26px;
  }

  .article-hero {
    min-height: 300px;
  }

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

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

/* roulang page: category1 */
:root {
  --primary: #2C6E8A;
  --primary-soft: #E7F0F4;
  --accent: #A8864D;
  --bg: #F7FAFB;
  --surface: #FFFFFF;
  --text: #18262E;
  --text-secondary: #5A6B76;
  --border: #E3EBEF;
  --dark: #12222A;
  --radius: 12px;
  --radius-btn: 6px;
  --shadow-sm: 0 1px 2px rgba(24,38,46,.04), 0 8px 24px rgba(24,38,46,.06);
  --shadow-hover: 0 4px 8px rgba(24,38,46,.06), 0 16px 40px rgba(24,38,46,.10);
  --font-serif: "Noto Serif SC", "Songti SC", serif;
  --font-sans: "Noto Sans SC", "PingFang SC", "Microsoft YaHei", sans-serif;
}

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

html {
  scroll-behavior: smooth;
}

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

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

a {
  color: var(--primary);
  text-decoration: none;
  transition: color .25s ease;
}

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

ul,
ol {
  list-style: none;
}

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

button {
  cursor: pointer;
}

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

/* header */
.site-header {
  position: fixed;
  top: 0;
  left: 0;
  right: 0;
  z-index: 1000;
  height: 72px;
  background: rgba(255, 255, 255, .12);
  backdrop-filter: blur(18px);
  -webkit-backdrop-filter: blur(18px);
  border-bottom: 1px solid rgba(255, 255, 255, .20);
  transition: background .3s ease, box-shadow .3s ease, border-color .3s ease;
}

.site-header.scrolled {
  background: rgba(255, 255, 255, .94);
  border-color: transparent;
  box-shadow: 0 1px 12px rgba(24, 38, 46, .08);
}

.nav-inner {
  height: 72px;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 20px;
}

.logo {
  display: flex;
  align-items: center;
  gap: 10px;
  font-family: var(--font-serif);
  font-size: 20px;
  font-weight: 700;
  color: var(--text);
  letter-spacing: .02em;
  white-space: nowrap;
}

.logo-icon {
  width: 36px;
  height: 36px;
  display: flex;
  align-items: center;
  justify-content: center;
  background: var(--primary);
  color: #fff;
  border-radius: 8px;
  font-size: 15px;
  flex-shrink: 0;
}

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

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

.nav-menu a {
  position: relative;
  padding: 8px 16px;
  color: var(--text);
  font-size: 15px;
  font-weight: 500;
  border-radius: var(--radius-btn);
  transition: color .2s ease, background .2s ease;
}

.nav-menu a:hover {
  color: var(--primary);
  background: rgba(255, 255, 255, .25);
}

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

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

.scrolled .nav-menu a:hover {
  background: rgba(44, 110, 138, .08);
}

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

.nav-cta {
  white-space: nowrap;
}

.nav-toggle {
  display: none;
  width: 40px;
  height: 40px;
  border-radius: 8px;
  border: 1px solid var(--border);
  background: var(--surface);
  color: var(--text);
  font-size: 18px;
  align-items: center;
  justify-content: center;
  transition: background .2s, border-color .2s;
}

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

/* buttons */
.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 8px;
  height: 44px;
  padding: 0 28px;
  border-radius: var(--radius-btn);
  font-size: 15px;
  font-weight: 500;
  line-height: 1;
  transition: all .25s ease;
  border: 1px solid transparent;
  text-decoration: none;
  white-space: nowrap;
  cursor: pointer;
}

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

.btn-primary:hover {
  background: #245A73;
  color: #fff;
  transform: translateY(-1px);
  box-shadow: 0 8px 20px rgba(44, 110, 138, .28);
}

.btn-primary:active {
  transform: translateY(0);
  box-shadow: 0 2px 8px rgba(44, 110, 138, .20);
}

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

.btn-outline:hover {
  background: var(--primary-soft);
  color: var(--primary);
  transform: translateY(-1px);
}

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

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

.btn-light:hover {
  background: #F0F7FA;
  color: var(--primary);
  transform: translateY(-1px);
  box-shadow: 0 8px 24px rgba(0, 0, 0, .18);
}

.btn-lg {
  height: 48px;
  padding: 0 34px;
  font-size: 16px;
}

.btn:focus-visible,
.nav-toggle:focus-visible,
.faq-question:focus-visible {
  outline: 2px solid var(--primary);
  outline-offset: 2px;
}

/* page hero */
.page-hero {
  position: relative;
  min-height: 380px;
  display: flex;
  align-items: center;
  padding: 160px 0 80px;
  background:
    linear-gradient(120deg, rgba(247, 250, 251, .96) 0%, rgba(231, 240, 244, .80) 50%, rgba(44, 110, 138, .35) 100%),
    url('/assets/images/backpic/back-1.webp') center/cover no-repeat;
}

.page-hero-content {
  max-width: 760px;
}

.hero-badge {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  background: rgba(255, 255, 255, .85);
  border: 1px solid var(--border);
  padding: 8px 18px;
  border-radius: 999px;
  font-size: 14px;
  font-weight: 500;
  color: var(--primary);
  margin-bottom: 20px;
  box-shadow: var(--shadow-sm);
}

.hero-badge i {
  color: var(--accent);
}

.page-hero h1 {
  font-family: var(--font-serif);
  font-size: 52px;
  font-weight: 700;
  line-height: 1.2;
  color: var(--text);
  letter-spacing: .02em;
  margin-bottom: 18px;
}

.page-hero p {
  font-size: 17px;
  line-height: 1.8;
  color: var(--text-secondary);
  max-width: 640px;
  margin-bottom: 32px;
}

.hero-actions {
  display: flex;
  gap: 16px;
  flex-wrap: wrap;
}

/* sections */
.section {
  padding: 96px 0;
}

.section-soft {
  background: var(--primary-soft);
}

.section-head {
  max-width: 760px;
  margin-bottom: 56px;
}

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

.section-tag {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  font-size: 13px;
  font-weight: 600;
  letter-spacing: .08em;
  color: var(--accent);
  text-transform: uppercase;
  margin-bottom: 14px;
}

.section-tag::before {
  content: "";
  width: 24px;
  height: 2px;
  background: var(--accent);
  border-radius: 2px;
  display: inline-block;
}

.section-head h2 {
  font-family: var(--font-serif);
  font-size: 36px;
  font-weight: 700;
  line-height: 1.3;
  color: var(--text);
  margin-bottom: 16px;
}

.section-head p {
  font-size: 16px;
  color: var(--text-secondary);
  line-height: 1.8;
}

/* split sections */
.split-row {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 64px;
  align-items: center;
}

.split-media {
  border-radius: var(--radius);
  overflow: hidden;
  box-shadow: var(--shadow-sm);
}

.split-media img {
  width: 100%;
  height: 380px;
  object-fit: cover;
  transition: transform .6s ease;
}

.split-media:hover img {
  transform: scale(1.03);
}

.split-content h2 {
  font-family: var(--font-serif);
  font-size: 32px;
  font-weight: 700;
  line-height: 1.3;
  margin-bottom: 18px;
}

.split-content p {
  font-size: 16px;
  line-height: 1.8;
  color: var(--text-secondary);
  margin-bottom: 24px;
}

.check-list {
  margin-bottom: 24px;
}

.check-list li {
  position: relative;
  padding-left: 32px;
  padding-top: 4px;
  padding-bottom: 12px;
  font-size: 15px;
  line-height: 1.7;
  color: var(--text);
}

.check-list li i {
  position: absolute;
  left: 0;
  top: 6px;
  color: var(--accent);
  font-size: 18px;
}

.text-link {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  font-weight: 500;
  color: var(--primary);
  font-size: 15px;
  transition: gap .2s ease, color .2s ease;
}

.text-link:hover {
  gap: 12px;
  color: var(--accent);
}

.split-reverse {
  background: var(--primary-soft);
}

.split-reverse .split-row {
  grid-template-columns: 1fr 1fr;
}

.split-reverse .split-content {
  order: 1;
}

.split-reverse .split-media {
  order: 2;
}

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

.feature-card {
  background: var(--surface);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  padding: 32px 28px;
  box-shadow: var(--shadow-sm);
  transition: box-shadow .3s ease, transform .3s ease;
}

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

.feature-icon {
  width: 52px;
  height: 52px;
  display: flex;
  align-items: center;
  justify-content: center;
  background: var(--primary-soft);
  color: var(--primary);
  border-radius: 12px;
  font-size: 20px;
  margin-bottom: 20px;
}

.feature-card h3 {
  font-family: var(--font-serif);
  font-size: 20px;
  font-weight: 600;
  margin-bottom: 10px;
  color: var(--text);
}

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

/* tip cards */
.card-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 24px;
}

.tip-card {
  background: var(--surface);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  overflow: hidden;
  box-shadow: var(--shadow-sm);
  transition: box-shadow .3s ease, transform .3s ease;
  display: flex;
  flex-direction: column;
}

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

.tip-card img {
  width: 100%;
  height: 200px;
  object-fit: cover;
  transition: transform .5s ease;
}

.tip-card:hover img {
  transform: scale(1.03);
}

.tip-body {
  padding: 24px 24px 28px;
  flex: 1;
  display: flex;
  flex-direction: column;
}

.tip-body h3 {
  font-family: var(--font-serif);
  font-size: 18px;
  font-weight: 600;
  color: var(--text);
  margin-bottom: 10px;
}

.tip-body p {
  font-size: 14px;
  color: var(--text-secondary);
  line-height: 1.7;
  margin-bottom: 18px;
  flex-grow: 1;
}

.tip-body a {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  font-weight: 500;
  font-size: 14px;
  color: var(--primary);
  transition: gap .2s ease;
}

.tip-body a:hover {
  gap: 12px;
  color: var(--accent);
}

/* process strip */
.process-section {
  background: var(--dark);
  padding: 96px 0;
  color: #fff;
}

.process-section .section-head h2 {
  color: #fff;
}

.process-section .section-head p {
  color: #A7B7BF;
}

.process-grid {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 24px;
  margin-top: 40px;
}

.process-step {
  background: rgba(255, 255, 255, .05);
  border: 1px solid rgba(255, 255, 255, .10);
  border-radius: var(--radius);
  padding: 32px 24px;
  position: relative;
  transition: background .3s ease, transform .3s ease;
}

.process-step:hover {
  background: rgba(255, 255, 255, .10);
  transform: translateY(-4px);
}

.step-num {
  font-family: var(--font-serif);
  font-size: 48px;
  font-weight: 700;
  color: var(--accent);
  line-height: 1;
  display: block;
  margin-bottom: 16px;
  font-variant-numeric: tabular-nums;
}

.process-step h3 {
  font-family: var(--font-serif);
  font-size: 19px;
  font-weight: 600;
  color: #fff;
  margin-bottom: 10px;
}

.process-step p {
  font-size: 14px;
  color: #A7B7BF;
  line-height: 1.7;
}

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

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

.faq-item {
  background: var(--surface);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  margin-bottom: 14px;
  overflow: hidden;
  box-shadow: var(--shadow-sm);
  transition: box-shadow .3s ease;
}

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

.faq-question {
  width: 100%;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 16px;
  padding: 22px 28px;
  font-size: 17px;
  font-weight: 500;
  color: var(--text);
  text-align: left;
  transition: color .2s ease;
}

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

.faq-question i {
  font-size: 16px;
  color: var(--accent);
  flex-shrink: 0;
  transition: transform .3s ease;
}

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

.faq-answer {
  max-height: 0;
  overflow: hidden;
  transition: max-height .4s ease;
}

.faq-item.active .faq-answer {
  max-height: 240px;
}

.faq-answer p {
  padding: 0 28px 24px;
  font-size: 14px;
  line-height: 1.8;
  color: var(--text-secondary);
  border-top: 1px solid var(--border);
  padding-top: 16px;
}

/* CTA */
.cta-section {
  background: var(--dark);
  position: relative;
  padding: 96px 0;
  overflow: hidden;
}

.cta-section::before {
  content: "";
  position: absolute;
  top: -60px;
  right: -60px;
  width: 240px;
  height: 240px;
  border: 2px solid rgba(168, 134, 77, .25);
  border-radius: 50%;
  pointer-events: none;
}

.cta-section::after {
  content: "";
  position: absolute;
  bottom: -80px;
  left: -80px;
  width: 320px;
  height: 320px;
  border: 1px solid rgba(255, 255, 255, .06);
  border-radius: 50%;
  pointer-events: none;
}

.cta-wrap {
  position: relative;
  z-index: 1;
  max-width: 720px;
  margin: 0 auto;
  text-align: center;
}

.cta-accent {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  width: 64px;
  height: 64px;
  border-radius: 50%;
  background: rgba(168, 134, 77, .15);
  border: 1px solid rgba(168, 134, 77, .35);
  color: var(--accent);
  font-size: 26px;
  margin-bottom: 24px;
}

.cta-wrap h2 {
  font-family: var(--font-serif);
  font-size: 34px;
  font-weight: 700;
  color: #fff;
  line-height: 1.4;
  margin-bottom: 14px;
}

.cta-wrap > p {
  font-size: 16px;
  color: #A7B7BF;
  line-height: 1.8;
  margin-bottom: 36px;
}

.cta-form {
  display: flex;
  gap: 12px;
  flex-wrap: wrap;
  justify-content: center;
  margin-bottom: 14px;
}

.cta-form input {
  height: 48px;
  padding: 0 18px;
  border-radius: var(--radius-btn);
  border: 1px solid rgba(255, 255, 255, .25);
  background: rgba(255, 255, 255, .08);
  color: #fff;
  font-size: 15px;
  min-width: 220px;
  width: auto;
  transition: border-color .2s, background .2s, box-shadow .2s;
}

.cta-form input::placeholder {
  color: rgba(255, 255, 255, .5);
}

.cta-form input:focus {
  border-color: var(--accent);
  background: rgba(255, 255, 255, .12);
  box-shadow: 0 0 0 3px rgba(168, 134, 77, .25);
}

.form-note {
  font-size: 13px;
  color: rgba(255, 255, 255, .4);
}

.form-success {
  display: none;
  background: rgba(76, 175, 80, .12);
  border: 1px solid rgba(76, 175, 80, .4);
  color: #A5D6A7;
  border-radius: var(--radius-btn);
  padding: 14px 24px;
  font-size: 15px;
  margin-bottom: 16px;
}

.form-success.show {
  display: block;
}

/* footer */
.footer {
  background: var(--dark);
  color: #A7B7BF;
  padding: 72px 0 0;
  font-size: 14px;
  line-height: 1.8;
}

.footer .logo {
  color: #fff;
  margin-bottom: 18px;
}

.footer .logo-icon {
  background: var(--accent);
}

.footer-grid {
  display: grid;
  grid-template-columns: 2fr 1fr 1fr 1.3fr;
  gap: 48px;
  padding-bottom: 56px;
}

.footer-brand p {
  font-size: 14px;
  color: #A7B7BF;
  max-width: 320px;
  margin-bottom: 20px;
}

.footer-qr {
  display: inline-flex;
  align-items: center;
  gap: 10px;
  background: rgba(255, 255, 255, .06);
  border: 1px solid rgba(255, 255, 255, .10);
  border-radius: 8px;
  padding: 10px 16px;
  font-size: 13px;
  color: rgba(255, 255, 255, .75);
}

.footer h4 {
  font-family: var(--font-serif);
  font-size: 16px;
  font-weight: 600;
  color: #fff;
  margin-bottom: 20px;
}

.footer-links li,
.footer-contact li {
  margin-bottom: 10px;
}

.footer-links a {
  color: #A7B7BF;
  display: inline-flex;
  align-items: center;
  gap: 8px;
  font-size: 14px;
  transition: color .2s ease, padding-left .2s ease;
}

.footer-links a i {
  font-size: 11px;
  color: rgba(255, 255, 255, .3);
}

.footer-links a:hover {
  color: #fff;
  padding-left: 4px;
}

.footer-contact li {
  display: flex;
  justify-content: flex-start;
  align-items: flex-start;
  gap: 10px;
  font-size: 14px;
}

.footer-contact li i {
  color: var(--accent);
  margin-top: 5px;
  flex-shrink: 0;
}

.footer-bottom {
  border-top: 1px solid rgba(255, 255, 255, .08);
  padding: 24px 0;
  display: flex;
  justify-content: space-between;
  gap: 16px;
  flex-wrap: wrap;
  font-size: 13px;
  color: rgba(255, 255, 255, .4);
}

.footer-bottom a {
  color: rgba(255, 255, 255, .4);
}

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

/* mobile nav */
@media (max-width: 767px) {
  .nav-menu {
    position: fixed;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    background: var(--surface);
    flex-direction: column;
    align-items: center;
    justify-content: center;
    gap: 24px;
    z-index: 999;
    opacity: 0;
    visibility: hidden;
    transform: translateY(-12px);
    transition: all .3s ease;
  }

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

  .nav-menu a {
    font-size: 22px;
    padding: 12px 24px;
    color: var(--text);
  }

  .nav-menu a.active::after {
    display: none;
  }

  .nav-menu a:hover {
    background: transparent;
    color: var(--primary);
  }

  .nav-toggle {
    display: flex;
  }

  .nav-cta {
    display: none;
  }

  .nav-cta-mobile {
    display: inline-flex;
    margin-top: 12px;
  }

  .hero-actions .btn-lg {
    padding: 0 24px;
  }
}

@media (min-width: 768px) {
  .nav-cta-mobile {
    display: none;
  }
}

/* responsive */
@media (max-width: 1023px) {
  .section {
    padding: 80px 0;
  }

  .split-row,
  .split-reverse .split-row {
    grid-template-columns: 1fr;
    gap: 40px;
  }

  .split-media img {
    height: 320px;
  }

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

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

  .card-grid .tip-card:last-child {
    grid-column: 1 / -1;
  }

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

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

@media (max-width: 767px) {
  .section {
    padding: 56px 0;
  }

  .page-hero {
    padding: 140px 0 56px;
    min-height: auto;
  }

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

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

  .hero-actions {
    flex-direction: column;
    gap: 12px;
  }

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

  .section-head h2 {
    font-size: 26px;
  }

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

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

  .split-media img {
    height: 220px;
  }

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

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

  .card-grid .tip-card:last-child {
    grid-column: auto;
  }

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

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

  .faq-answer p {
    padding: 14px 20px 20px;
  }

  .cta-wrap h2 {
    font-size: 26px;
  }

  .cta-form {
    flex-direction: column;
    align-items: stretch;
  }

  .cta-form input {
    width: 100%;
  }

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

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

/* roulang page: category2 */
:root {
  --primary: #2C6E8A;
  --primary-soft: #E7F0F4;
  --accent: #A8864D;
  --bg: #F7FAFB;
  --surface: #FFFFFF;
  --text: #18262E;
  --text-secondary: #5A6B76;
  --border: #E3EBEF;
  --dark: #12222A;
  --radius: 12px;
  --radius-sm: 6px;
  --shadow-sm: 0 1px 2px rgba(24, 38, 46, .04), 0 8px 24px rgba(24, 38, 46, .06);
  --shadow-md: 0 4px 8px rgba(24, 38, 46, .06), 0 16px 40px rgba(24, 38, 46, .10);
  --font-serif: 'Noto Serif SC', 'Songti SC', serif;
  --font-sans: 'Noto Sans SC', 'PingFang SC', 'Microsoft YaHei', sans-serif;
  --container: 1200px;
  --spacer: 96px;
  --spacer-mobile: 56px;
}
*, *::before, *::after { box-sizing: border-box; margin: 0; padding: 0; }
html { scroll-behavior: smooth; }
body { font-family: var(--font-sans); font-size: 16px; line-height: 1.75; color: var(--text); background: var(--bg); -webkit-font-smoothing: antialiased; }
img { max-width: 100%; display: block; }
a { color: var(--primary); text-decoration: none; transition: color .25s, background .25s, border-color .25s; }
ul { list-style: none; }
button { font-family: inherit; cursor: pointer; border: none; background: none; }
input { font-family: inherit; font-size: 15px; }
.container { max-width: var(--container); margin: 0 auto; padding: 0 24px; }
.btn {
  display: inline-flex; align-items: center; justify-content: center; gap: 8px;
  height: 44px; padding: 0 28px; border-radius: var(--radius-sm);
  font-size: 15px; font-weight: 500; letter-spacing: .02em;
  transition: all .25s ease; white-space: nowrap;
}
.btn-primary { background: var(--primary); color: #fff; border: 1px solid var(--primary); }
.btn-primary:hover { background: #235a72; border-color: #235a72; transform: translateY(-1px); box-shadow: 0 6px 16px rgba(44, 110, 138, .25); }
.btn-primary:active { transform: translateY(0); }
.btn-primary:focus-visible, .btn-outline:focus-visible, .btn-outline-light:focus-visible, .btn-light:focus-visible { outline: 2px solid var(--primary); outline-offset: 2px; }
.btn-outline { background: transparent; color: var(--primary); border: 1px solid var(--primary); }
.btn-outline:hover { background: var(--primary-soft); transform: translateY(-1px); box-shadow: 0 4px 12px rgba(44, 110, 138, .12); }
.btn-outline:active { transform: translateY(0); }
.btn-outline-light { background: rgba(255, 255, 255, .15); color: #fff; border: 1px solid rgba(255, 255, 255, .5); backdrop-filter: blur(6px); }
.btn-outline-light:hover { background: rgba(255, 255, 255, .25); transform: translateY(-1px); }
.btn-light { background: #fff; color: var(--dark); border: 1px solid #fff; }
.btn-light:hover { background: var(--primary-soft); border-color: var(--primary-soft); transform: translateY(-1px); box-shadow: 0 6px 20px rgba(0, 0, 0, .18); }
.btn-sm { height: 36px; padding: 0 18px; font-size: 14px; }
.btn-success { background: #3a8f6a !important; border-color: #3a8f6a !important; }
.btn[disabled] { opacity: .4; pointer-events: none; }

/* Header */
.site-header {
  position: fixed; top: 0; left: 0; right: 0; z-index: 100;
  background: rgba(255, 255, 255, .12);
  backdrop-filter: blur(18px);
  -webkit-backdrop-filter: blur(18px);
  border-bottom: 1px solid rgba(255, 255, 255, .18);
  transition: background .4s, box-shadow .4s, border-color .4s;
}
.site-header.scrolled {
  background: rgba(255, 255, 255, .94);
  box-shadow: 0 1px 12px rgba(24, 38, 46, .08);
  border-color: transparent;
}
.nav-container { display: flex; align-items: center; justify-content: space-between; height: 72px; }
.logo { display: inline-flex; align-items: center; gap: 10px; font-family: var(--font-serif); font-size: 20px; font-weight: 700; color: var(--text); letter-spacing: .02em; }
.logo-icon { width: 34px; height: 34px; display: inline-flex; align-items: center; justify-content: center; background: var(--primary); color: #fff; border-radius: 50%; font-size: 15px; flex-shrink: 0; transition: transform .3s; }
.logo:hover .logo-icon { transform: rotate(-15deg); }
.nav-menu { display: flex; align-items: center; gap: 32px; }
.nav-menu a {
  position: relative; font-size: 15px; font-weight: 500; color: var(--text-secondary);
  padding: 6px 0; transition: color .25s;
}
.nav-menu a:hover { color: var(--primary); }
.nav-menu a.active { color: var(--primary); font-weight: 700; }
.nav-menu a.active::after {
  content: ''; position: absolute; left: 0; right: 0; bottom: -3px; height: 2px;
  background: var(--accent); border-radius: 2px;
}
.nav-actions { display: flex; align-items: center; gap: 14px; }
.search-toggle, .nav-toggle { width: 38px; height: 38px; display: inline-flex; align-items: center; justify-content: center; border-radius: 8px; color: var(--text-secondary); font-size: 16px; transition: background .25s, color .25s; }
.search-toggle:hover, .nav-toggle:hover { background: var(--primary-soft); color: var(--primary); }
.nav-toggle { display: none; font-size: 20px; }
.nav-toggle.active { color: var(--primary); }

/* Search Panel */
.search-panel {
  position: fixed; top: 72px; left: 0; right: 0; z-index: 99; background: rgba(255, 255, 255, .98);
  box-shadow: 0 8px 30px rgba(24, 38, 46, .12); padding: 20px 0;
  transform: translateY(-120%); opacity: 0; transition: transform .35s ease, opacity .35s;
}
.search-panel.open { transform: translateY(0); opacity: 1; }
.search-panel .container { display: flex; gap: 12px; }
.search-panel input {
  flex: 1; height: 46px; padding: 0 18px; border: 1px solid var(--border); border-radius: var(--radius-sm);
  font-size: 15px; transition: border-color .25s, box-shadow .25s;
}
.search-panel input:focus { outline: none; border-color: var(--primary); box-shadow: 0 0 0 3px rgba(44, 110, 138, .15); }
.search-panel button { height: 46px; padding: 0 24px; background: var(--primary); color: #fff; border-radius: var(--radius-sm); font-size: 15px; font-weight: 500; transition: background .25s; }
.search-panel button:hover { background: #235a72; }

/* Mobile Menu */
.mobile-menu {
  position: fixed; top: 72px; left: 0; right: 0; z-index: 98; background: #fff;
  padding: 20px 24px 30px; box-shadow: 0 16px 40px rgba(24, 38, 46, .12);
  transform: translateY(-130%); opacity: 0; transition: transform .35s ease, opacity .35s;
}
.mobile-menu.open { transform: translateY(0); opacity: 1; }
.mobile-menu a { display: block; padding: 14px 0; font-size: 16px; font-weight: 500; color: var(--text); border-bottom: 1px solid var(--border); }
.mobile-menu a.active { color: var(--primary); }
.mobile-menu a:last-child { border-bottom: none; }
.mobile-menu .btn { margin-top: 16px; width: 100%; }

/* Page Hero */
.page-hero {
  position: relative; min-height: 360px; display: flex; align-items: center;
  padding: 140px 0 72px; overflow: hidden;
}
.hero-bg {
  position: absolute; inset: 0; background-size: cover; background-position: center;
  z-index: 0;
}
.hero-bg::after {
  content: ''; position: absolute; inset: 0;
  background: linear-gradient(90deg, rgba(255, 255, 255, .82) 0%, rgba(231, 240, 244, .62) 50%, rgba(231, 240, 244, .28) 100%);
}
.hero-content { position: relative; z-index: 1; max-width: 680px; }
.hero-badge {
  display: inline-block; padding: 5px 16px; border-radius: 999px; background: rgba(168, 134, 77, .12);
  color: var(--accent); font-size: 13px; font-weight: 500; letter-spacing: .08em; margin-bottom: 20px;
  border: 1px solid rgba(168, 134, 77, .25);
}
.page-hero h1 {
  font-family: var(--font-serif); font-size: 46px; font-weight: 700; color: var(--text);
  line-height: 1.2; letter-spacing: .02em; margin-bottom: 16px;
}
.page-hero p { font-size: 17px; color: var(--text-secondary); line-height: 1.8; margin-bottom: 28px; max-width: 560px; }
.hero-actions { display: flex; gap: 14px; flex-wrap: wrap; }
.hero-breadcrumb { margin-bottom: 18px; font-size: 13px; color: var(--text-secondary); display: flex; align-items: center; gap: 8px; }
.hero-breadcrumb a { color: var(--text-secondary); }
.hero-breadcrumb a:hover { color: var(--primary); }
.hero-breadcrumb i { font-size: 10px; }

/* Stats */
.stats-section { padding: 60px 0 20px; }
.stats-grid { display: grid; grid-template-columns: repeat(4, 1fr); gap: 24px; }
.stat-card {
  background: var(--surface); border: 1px solid var(--border); border-radius: var(--radius);
  padding: 32px 24px; text-align: center; box-shadow: var(--shadow-sm); transition: transform .3s, box-shadow .3s;
}
.stat-card:hover { transform: translateY(-4px); box-shadow: var(--shadow-md); }
.stat-num { font-family: var(--font-serif); font-size: 54px; font-weight: 700; color: var(--accent); line-height: 1.1; font-variant-numeric: tabular-nums; }
.stat-num span { font-size: 24px; margin-left: 2px; }
.stat-label { margin-top: 10px; font-size: 14px; color: var(--text-secondary); }

/* Split Sections */
.alt-section { padding: var(--spacer) 0; }
.alt-reverse { background: var(--primary-soft); }
.split-row { display: grid; grid-template-columns: 1fr 1fr; gap: 72px; align-items: center; }
.split-media { border-radius: var(--radius); overflow: hidden; box-shadow: var(--shadow-md); }
.split-media img { width: 100%; height: 400px; object-fit: cover; transition: transform .5s; }
.split-media:hover img { transform: scale(1.03); }
.split-content .section-badge { margin-bottom: 14px; }
.split-content h2 { font-family: var(--font-serif); font-size: 32px; font-weight: 700; line-height: 1.3; margin-bottom: 16px; }
.split-content p { color: var(--text-secondary); margin-bottom: 20px; font-size: 16px; }
.check-list { display: flex; flex-direction: column; gap: 12px; margin-bottom: 24px; }
.check-list li { display: flex; align-items: flex-start; gap: 10px; font-size: 15px; color: var(--text); line-height: 1.6; }
.check-list i { color: var(--primary); margin-top: 4px; }
.link-more { display: inline-flex; align-items: center; gap: 8px; font-size: 14px; font-weight: 500; color: var(--primary); }
.link-more:hover { color: var(--accent); gap: 12px; }
.link-more i { transition: transform .25s; }

/* Section Header */
.section-header { margin-bottom: 44px; }
.section-header.center { text-align: center; }
.section-header.center p { max-width: 600px; margin: 0 auto; }
.section-badge {
  display: inline-block; padding: 4px 14px; border-radius: 999px; background: var(--primary-soft);
  color: var(--primary); font-size: 12px; font-weight: 500; letter-spacing: .1em;
  margin-bottom: 12px; border: 1px solid rgba(44, 110, 138, .12);
}
.section-header h2 { font-family: var(--font-serif); font-size: 36px; font-weight: 700; line-height: 1.25; margin-bottom: 8px; }
.section-header p { color: var(--text-secondary); font-size: 15px; }

/* Tier Section */
.tier-section { padding: var(--spacer) 0; background: var(--bg); }
.tier-grid { display: grid; grid-template-columns: repeat(3, 1fr); gap: 28px; }
.tier-card {
  background: var(--surface); border: 1px solid var(--border); border-radius: var(--radius);
  padding: 36px 28px; box-shadow: var(--shadow-sm); position: relative; transition: transform .3s, box-shadow .3s;
}
.tier-card:hover { transform: translateY(-4px); box-shadow: var(--shadow-md); }
.tier-featured { border: 2px solid var(--primary); }
.tier-tag {
  position: absolute; top: -14px; left: 50%; transform: translateX(-50%);
  background: var(--accent); color: #fff; font-size: 12px; font-weight: 500;
  padding: 4px 18px; border-radius: 999px; letter-spacing: .08em;
}
.tier-name { font-family: var(--font-serif); font-size: 22px; font-weight: 700; color: var(--text); }
.tier-price { margin: 12px 0 24px; font-size: 14px; color: var(--text-secondary); }
.tier-price span { display: block; font-family: var(--font-serif); font-size: 32px; font-weight: 700; color: var(--primary); margin-top: 4px; }
.tier-list { display: flex; flex-direction: column; gap: 12px; margin-bottom: 28px; }
.tier-list li { display: flex; align-items: flex-start; gap: 10px; font-size: 14px; line-height: 1.6; }
.tier-list i { color: var(--primary); margin-top: 4px; font-size: 13px; }
.tier-card .btn { width: 100%; }

/* Read Section */
.read-section { padding: var(--spacer) 0; }
.read-section .section-header { display: flex; align-items: flex-end; justify-content: space-between; gap: 20px; flex-wrap: wrap; }
.read-grid { display: grid; grid-template-columns: repeat(3, 1fr); gap: 28px; }
.read-card {
  background: var(--surface); border-radius: var(--radius); overflow: hidden;
  border: 1px solid var(--border); box-shadow: var(--shadow-sm);
  transition: transform .3s, box-shadow .3s;
}
.read-card:hover { transform: translateY(-4px); box-shadow: var(--shadow-md); }
.read-card img { width: 100%; height: 180px; object-fit: cover; transition: transform .5s; }
.read-card:hover img { transform: scale(1.03); }
.read-card { position: relative; }
.read-card img { transition: transform .5s; }
.read-card:hover img { transform: scale(1.03); }
.read-body { padding: 22px 24px 26px; }
.read-body h3 { font-family: var(--font-serif); font-size: 20px; font-weight: 700; margin-bottom: 8px; color: var(--text); }
.read-body p { font-size: 14px; color: var(--text-secondary); margin-bottom: 16px; line-height: 1.7; }

/* FAQ */
.faq-section { padding: var(--spacer) 0; background: var(--surface); }
.faq-list { max-width: 780px; margin: 0 auto; display: flex; flex-direction: column; gap: 12px; }
.faq-item {
  background: var(--bg); border: 1px solid var(--border); border-radius: var(--radius);
  overflow: hidden; transition: box-shadow .3s, border-color .3s;
}
.faq-item.active { border-color: rgba(44, 110, 138, .3); box-shadow: var(--shadow-sm); }
.faq-question {
  width: 100%; display: flex; align-items: center; justify-content: space-between; gap: 16px;
  padding: 20px 24px; text-align: left; font-size: 16px; font-weight: 500; color: var(--text);
  background: transparent; transition: color .25s;
}
.faq-question:hover { color: var(--primary); }
.faq-icon {
  width: 30px; height: 30px; flex-shrink: 0; display: inline-flex; align-items: center; justify-content: center;
  border-radius: 50%; background: var(--primary-soft); color: var(--primary); font-size: 13px;
  transition: transform .35s, background .25s, color .25s;
}
.faq-item.active .faq-icon { transform: rotate(45deg); background: var(--primary); color: #fff; }
.faq-answer { max-height: 0; overflow: hidden; transition: max-height .4s ease; }
.faq-item.active .faq-answer { max-height: 300px; }
.faq-answer p { padding: 0 24px 22px; font-size: 14px; color: var(--text-secondary); line-height: 1.8; }

/* CTA */
.cta-section { padding: 80px 0; background: var(--dark); color: #fff; position: relative; overflow: hidden; }
.cta-section::before {
  content: ''; position: absolute; top: -120px; right: -80px; width: 340px; height: 340px;
  border-radius: 50%; background: rgba(168, 134, 77, .12); pointer-events: none;
}
.cta-inner { max-width: 720px; margin: 0 auto; text-align: center; position: relative; z-index: 1; }
.cta-icon {
  display: inline-flex; align-items: center; justify-content: center; width: 54px; height: 54px;
  border-radius: 50%; background: rgba(168, 134, 77, .2); color: var(--accent); font-size: 22px; margin-bottom: 20px;
}
.cta-section h2 { font-family: var(--font-serif); font-size: 34px; font-weight: 700; margin-bottom: 12px; }
.cta-section p { color: #A7B7BF; font-size: 15px; margin-bottom: 24px; }
.cta-form { display: flex; gap: 12px; margin-bottom: 12px; flex-wrap: wrap; justify-content: center; }
.cta-form input {
  height: 48px; padding: 0 18px; border-radius: var(--radius-sm); border: 1px solid rgba(255, 255, 255, .2);
  background: rgba(255, 255, 255, .08); color: #fff; font-size: 15px; width: 180px;
  transition: border-color .25s, box-shadow .25s, background .25s;
}
.cta-form input::placeholder { color: rgba(255, 255, 255, .5); }
.cta-form input:focus { outline: none; border-color: var(--accent); background: rgba(255, 255, 255, .14); box-shadow: 0 0 0 3px rgba(168, 134, 77, .2); }
.cta-hint { font-size: 12px; color: rgba(255, 255, 255, .4); margin-bottom: 0; }

/* Footer */
.footer { background: var(--dark); color: #A7B7BF; padding: 60px 0 0; }
.footer-grid { display: grid; grid-template-columns: 2fr 1fr 1fr 1.4fr; gap: 48px; padding-bottom: 44px; }
.footer-brand .logo { color: #fff; margin-bottom: 16px; }
.footer-brand p { font-size: 14px; line-height: 1.8; margin-bottom: 20px; }
.footer-qr {
  display: inline-flex; align-items: center; gap: 8px; padding: 10px 16px;
  background: rgba(255, 255, 255, .06); border-radius: 8px; font-size: 13px; color: #A7B7BF;
  border: 1px dashed rgba(255, 255, 255, .16); cursor: pointer; transition: background .25s;
}
.footer-qr:hover { background: rgba(255, 255, 255, .1); }
.footer h4 { color: #fff; font-size: 16px; font-weight: 500; margin-bottom: 16px; }
.footer-links, .footer-contact { display: flex; flex-direction: column; gap: 10px; }
.footer-links a { color: #A7B7BF; font-size: 14px; display: inline-flex; align-items: center; gap: 6px; }
.footer-links a:hover { color: #fff; padding-left: 4px; }
.footer-links i { font-size: 10px; color: rgba(255, 255, 255, .3); }
.footer-contact li { display: flex; align-items: flex-start; gap: 10px; font-size: 14px; line-height: 1.6; }
.footer-contact i { color: var(--accent); margin-top: 5px; font-size: 14px; }
.footer-bottom { border-top: 1px solid rgba(255, 255, 255, .08); padding: 20px 0; display: flex; justify-content: space-between; align-items: center; flex-wrap: wrap; gap: 10px; font-size: 13px; }
.footer-bottom a { color: #A7B7BF; }
.footer-bottom a:hover { color: #fff; }

/* Reveal Animation */
.reveal { opacity: 0; transform: translateY(24px); transition: opacity .6s ease, transform .6s ease; }
.reveal.in { opacity: 1; transform: translateY(0); }

/* Responsive */
@media (max-width: 1023px) {
  .split-row { gap: 40px; }
  .split-media img { height: 320px; }
  .tier-grid { grid-template-columns: repeat(3, 1fr); gap: 16px; }
  .tier-card { padding: 28px 18px; }
  .read-grid { gap: 16px; }
  .footer-grid { grid-template-columns: 1fr 1fr; gap: 36px; }
}
@media (max-width: 767px) {
  :root { --spacer: var(--spacer-mobile); }
  .nav-container { height: 60px; }
  .nav-menu { display: none; }
  .nav-toggle { display: inline-flex; }
  .search-toggle { display: none; }
  .nav-actions .btn-sm { display: none; }
  .nav-actions .btn-primary { font-size: 13px; padding: 0 14px; height: 34px; }
  .site-header { background: rgba(255, 255, 255, .94); border-bottom-color: transparent; box-shadow: 0 1px 12px rgba(24, 38, 46, .08); }
  .logo { font-size: 17px; }
  .logo-icon { width: 30px; height: 30px; font-size: 13px; }
  .mobile-menu { top: 60px; }
  .search-panel { top: 60px; }
  .page-hero { min-height: 320px; padding: 110px 0 56px; }
  .page-hero h1 { font-size: 32px; }
  .page-hero p { font-size: 15px; }
  .stats-grid { grid-template-columns: 1fr 1fr; gap: 14px; }
  .stat-num { font-size: 38px; }
  .absolute-stats { grid-template-columns: 1fr 1fr; }
  .split-row { grid-template-columns: 1fr; gap: 28px; }
  .split-media img { height: 220px; }
  .split-content h2 { font-size: 26px; }
  .section-header h2 { font-size: 28px; }
  .tier-grid { grid-template-columns: 1fr; }
  .read-grid { grid-template-columns: 1fr; }
  .cta-form { flex-direction: column; align-items: center; }
  .cta-form input { width: 100%; max-width: 320px; }
  .cta-form .btn { width: 100%; max-width: 320px; }
  .footer-grid { grid-template-columns: 1fr; gap: 30px; }
  .footer-bottom { flex-direction: column; text-align: center; }
  .cta-inner h2 { font-size: 26px; }
  .faq-question { font-size: 15px; padding: 16px 18px; }
  .faq-answer p { padding: 0 18px 18px; }
}
@media (max-width: 520px) {
  .stats-grid { grid-template-columns: 1fr 1fr; gap: 12px; }
  .stat-card { padding: 20px 14px; }
  .stat-num { font-size: 32px; }
  .hero-actions { flex-direction: column; }
  .hero-actions .btn { width: 100%; }
  .page-hero h1 { font-size: 28px; }
  .section-header { margin-bottom: 32px; }
}