/* roulang page: index */
:root{
  --brand:#14607A; --brand-dark:#0E4759; --accent:#E8873A;
  --bg:#F6F8FA; --surface:#FFFFFF; --soft:#EEF4F7;
  --ink:#16232E; --muted:#5B6B7A; --weak:#8A98A5;
  --line:#E3E9EE; --divider:#EDF1F4;
  --r-card:16px; --r-lg:20px; --r-btn:10px;
  --sh-1:0 1px 2px rgba(16,42,58,.06);
  --sh-2:0 8px 20px -10px rgba(16,42,58,.14);
  --sh-3:0 18px 40px -18px rgba(16,42,58,.22);
  --font-sans:"PingFang SC","Microsoft YaHei","Hiragino Sans GB","Source Han Sans SC",system-ui,sans-serif;
}
*,*::before,*::after{box-sizing:border-box;}
html{-webkit-text-size-adjust:100%;scroll-behavior:smooth;}
body{margin:0;font-family:var(--font-sans);font-size:16px;line-height:1.78;color:var(--ink);background:var(--bg);}
img{max-width:100%;display:block;object-fit:cover;object-position:center;background:var(--soft);}
a{color:var(--brand);text-decoration:none;text-underline-offset:4px;transition:color .2s ease-out;}
a:hover{color:var(--brand-dark);}
button,input{font:inherit;}
h1,h2,h3,h4{margin:0;font-weight:700;color:var(--ink);}
h1{font-size:42px;line-height:1.22;}
h2{font-size:30px;line-height:1.3;}
h3{font-size:21px;line-height:1.45;font-weight:600;}
p{margin:0 0 1.15em;}
ul,ol{margin:0 0 1.15em;padding-left:1.15em;}
li{line-height:1.8;}
:focus-visible{outline:2px solid var(--brand);outline-offset:2px;}
.container{width:100%;max-width:1200px;margin:0 auto;padding:0 32px;}
.section{padding:104px 0;}
.section-sm{padding:72px 0;}
.eyebrow{display:inline-flex;align-items:center;gap:8px;font-size:12.5px;font-weight:600;color:var(--brand);background:rgba(20,96,122,.08);border-radius:999px;padding:6px 14px;}
.section-title{max-width:760px;}
.section-title p{color:var(--muted);font-size:16px;margin-top:14px;}
.lead{font-size:17px;color:var(--muted);line-height:1.8;}
.meta{font-size:12.5px;color:var(--weak);}

/* header */
.site-header{position:sticky;top:0;z-index:60;background:#fff;border-bottom:1px solid var(--line);}
.site-header.scrolled{box-shadow:var(--sh-2);}
.nav-panel{display:flex;align-items:center;justify-content:space-between;gap:16px;background:#fff;border:1px solid var(--line);border-radius:var(--r-card);padding:10px 14px;margin:10px 0;}
.brand{display:flex;align-items:center;gap:10px;flex:0 0 auto;}
.brand-mark{width:30px;height:30px;flex:0 0 auto;}
.brand-text{display:flex;flex-direction:column;line-height:1.15;}
.brand-text b{font-size:15.5px;color:var(--ink);font-weight:700;}
.brand-text span{font-size:11.5px;color:var(--weak);}
.nav-links{display:flex;align-items:center;gap:6px;}
.nav-card{display:inline-flex;align-items:center;gap:7px;font-size:14px;color:var(--muted);border:1px solid transparent;border-radius:var(--r-btn);padding:8px 12px;transition:all .2s ease-out;}
.nav-card svg{width:18px;height:18px;stroke:currentColor;fill:none;stroke-width:1.6;}
.nav-card:hover{background:var(--soft);border-color:rgba(20,96,122,.2);color:var(--brand);transform:translateY(-2px);}
.nav-card.active{background:rgba(20,96,122,.08);color:var(--brand);box-shadow:inset 0 -2px 0 var(--brand);}
.nav-right{display:flex;align-items:center;gap:10px;}
.nav-toggle{display:none;width:40px;height:40px;border:1px solid var(--line);background:#fff;border-radius:var(--r-btn);align-items:center;justify-content:center;}
.nav-toggle span{display:block;width:18px;height:2px;background:var(--ink);position:relative;}
.nav-toggle span::before,.nav-toggle span::after{content:"";position:absolute;left:0;width:18px;height:2px;background:var(--ink);}
.nav-toggle span::before{top:-6px;}
.nav-toggle span::after{top:6px;}
.drawer{display:none;border-top:1px solid var(--line);background:#fff;padding:16px 0 22px;}
.drawer.open{display:block;}
.drawer-grid{display:grid;grid-template-columns:1fr 1fr;gap:12px;margin-bottom:16px;}

/* buttons */
.btn{display:inline-flex;align-items:center;justify-content:center;gap:8px;font-size:15px;font-weight:600;border-radius:var(--r-btn);padding:12px 22px;border:1px solid transparent;cursor:pointer;transition:all .2s ease-out;}
.btn-primary{background:var(--brand);color:#fff;box-shadow:var(--sh-1);}
.btn-primary:hover{background:var(--brand-dark);color:#fff;transform:translateY(-1px);box-shadow:var(--sh-2);}
.btn-ghost{background:#fff;color:var(--brand);border-color:rgba(20,96,122,.3);}
.btn-ghost:hover{background:rgba(20,96,122,.06);color:var(--brand-dark);}
.btn-accent{background:var(--accent);color:#fff;}
.btn-accent:hover{background:#d3762b;color:#fff;transform:translateY(-1px);}
.btn-text{display:inline-flex;align-items:center;gap:6px;font-size:14px;font-weight:600;color:var(--brand);}
.btn-text:hover{text-decoration:underline;}
.btn-sm{font-size:12.5px;padding:6px 12px;}

/* badges */
.badge{display:inline-flex;align-items:center;gap:6px;font-size:12.5px;border-radius:999px;padding:4px 11px;font-weight:600;}
.badge-brand{background:rgba(20,96,122,.08);color:var(--brand);}
.badge-soft{background:#EEF1F4;color:var(--muted);font-weight:500;}
.badge-accent{background:rgba(232,135,58,.14);color:#B96521;}

/* hero */
.hero{position:relative;overflow:hidden;padding:72px 0 88px;min-height:620px;display:flex;align-items:center;}
.hero-deco{position:absolute;inset:0;pointer-events:none;opacity:.55;}
.hero-grid{position:relative;display:grid;grid-template-columns:7fr 5fr;gap:56px;align-items:center;}
.hero h1{margin-bottom:20px;}
.hero .lead{max-width:560px;font-size:17.5px;}
.hero-actions{display:flex;flex-wrap:wrap;gap:12px;margin:28px 0 32px;}
.hero-stats{display:flex;flex-wrap:wrap;gap:12px;}
.stat-chip{background:#fff;border:1px solid var(--line);border-radius:999px;padding:8px 16px;font-size:13px;color:var(--muted);box-shadow:var(--sh-1);}
.stat-chip b{color:var(--brand);font-size:14.5px;}
.hero-media{border-radius:var(--r-lg);overflow:hidden;box-shadow:var(--sh-2);border:1px solid var(--line);background:var(--soft);}
.hero-media img{width:100%;aspect-ratio:16/10;}

/* anchor bar */
.anchor-wrap{position:sticky;top:72px;z-index:50;background:rgba(246,248,250,.92);backdrop-filter:blur(6px);border-bottom:1px solid var(--line);padding:12px 0;}
.anchor-bar{display:flex;gap:8px;overflow-x:auto;scrollbar-width:none;}
.anchor-bar::-webkit-scrollbar{display:none;}
.anchor-bar a{flex:0 0 auto;font-size:13.5px;font-weight:600;color:var(--muted);background:#fff;border:1px solid var(--line);border-radius:999px;padding:8px 16px;transition:all .2s ease-out;}
.anchor-bar a:hover{color:var(--brand);border-color:rgba(20,96,122,.28);}
.anchor-bar a.on{background:rgba(20,96,122,.08);color:var(--brand);border-color:rgba(20,96,122,.22);}

/* cards */
.card{background:#fff;border:1px solid var(--line);border-radius:var(--r-card);box-shadow:var(--sh-1);padding:24px;transition:transform .2s ease-out,box-shadow .2s ease-out;}
.card-hover:hover{transform:translateY(-3px);box-shadow:var(--sh-2);}
.card-hover:hover h3{color:var(--brand);}
.card-dark{background:var(--brand);border-color:var(--brand);color:#fff;}
.card-dark h3,.card-dark h2{color:#fff;}
.card-dark p{color:rgba(255,255,255,.82);}
.card-media{border-radius:var(--r-card);overflow:hidden;border:1px solid var(--line);background:var(--soft);}
.card-media img{width:100%;aspect-ratio:16/9;}
.icon-32{width:32px;height:32px;stroke:var(--brand);fill:none;stroke-width:1.6;stroke-linecap:round;stroke-linejoin:round;}
.card-dark .icon-32{stroke:#fff;}
.feature-grid{display:grid;grid-template-columns:repeat(12,1fr);gap:24px;}
.col-8{grid-column:span 8;}
.col-4{grid-column:span 4;}
.col-6{grid-column:span 6;}
.col-12{grid-column:span 12;}
.feature-lead{display:grid;grid-template-columns:1.05fr .95fr;gap:0;padding:0;overflow:hidden;}
.feature-lead .fl-body{padding:28px 28px 26px;}
.feature-lead .fl-media{background:var(--soft);min-height:100%;}
.feature-lead .fl-media img{height:100%;width:100%;aspect-ratio:auto;}
.check-list{list-style:none;padding:0;margin:14px 0 0;}
.check-list li{display:flex;gap:10px;align-items:flex-start;font-size:14px;color:var(--muted);margin-bottom:8px;}
.check-list li svg{width:18px;height:18px;flex:0 0 auto;margin-top:3px;stroke:var(--accent);fill:none;stroke-width:2;}
.card-dark .check-list li{color:rgba(255,255,255,.85);}

/* steps */
.steps{display:grid;grid-template-columns:repeat(4,1fr);gap:20px;position:relative;}
.step{position:relative;padding-top:18px;}
.step::before{content:"";position:absolute;top:0;left:0;right:0;height:1px;background:var(--divider);}
.step-dot{display:inline-flex;width:34px;height:34px;align-items:center;justify-content:center;border-radius:999px;border:1.5px solid var(--brand);color:var(--brand);font-size:14px;font-weight:700;background:#fff;margin-bottom:12px;}
.step.now .step-dot{background:var(--brand);color:#fff;}
.step h3{font-size:17px;margin-bottom:6px;}
.step p{font-size:14px;color:var(--muted);margin:0;}
.demo-grid{display:grid;grid-template-columns:5fr 7fr;gap:40px;align-items:start;}
.demo-media{border-radius:var(--r-lg);overflow:hidden;box-shadow:var(--sh-2);border:1px solid var(--line);}
.demo-media img{width:100%;aspect-ratio:16/10;}

/* news */
.news-head{display:flex;flex-wrap:wrap;gap:16px;align-items:flex-end;justify-content:space-between;margin-bottom:28px;}
.chips{display:flex;flex-wrap:wrap;gap:8px;margin-bottom:26px;}
.chip{font-size:13px;color:var(--muted);background:#fff;border:1px solid var(--line);border-radius:999px;padding:6px 14px;}
.chip.on{background:rgba(20,96,122,.08);color:var(--brand);border-color:rgba(20,96,122,.22);font-weight:600;}
.news-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:24px;}
.post-card{display:flex;flex-direction:column;background:#fff;border:1px solid var(--line);border-radius:var(--r-card);overflow:hidden;box-shadow:var(--sh-1);transition:transform .2s ease-out,box-shadow .2s ease-out;}
.post-card:hover{transform:translateY(-3px);box-shadow:var(--sh-2);}
.post-card img{width:100%;aspect-ratio:16/9;}
.post-body{padding:18px 20px 20px;display:flex;flex-direction:column;flex:1;}
.post-meta{display:flex;align-items:center;gap:8px;margin-bottom:10px;}
.post-title{font-size:17px;font-weight:600;line-height:1.5;margin:0 0 8px;display:-webkit-box;-webkit-line-clamp:2;-webkit-box-orient:vertical;overflow:hidden;}
.post-excerpt{font-size:14px;color:var(--muted);line-height:1.7;margin:0 0 14px;display:-webkit-box;-webkit-line-clamp:2;-webkit-box-orient:vertical;overflow:hidden;}
.post-link{margin-top:auto;font-size:14px;font-weight:600;color:var(--brand);}
.empty-state{display:none;text-align:center;padding:56px 24px;background:#fff;border:1px dashed var(--line);border-radius:var(--r-card);}
.empty-state.show{display:block;}
.empty-state p{color:var(--muted);margin:16px 0 20px;}

/* proof */
.metrics{display:grid;grid-template-columns:repeat(4,1fr);gap:20px;margin-bottom:32px;}
.metric{background:#fff;border:1px solid var(--line);border-radius:var(--r-card);padding:22px;box-shadow:var(--sh-1);}
.metric b{display:block;font-size:32px;line-height:1.2;color:var(--brand);font-weight:700;}
.metric span{font-size:12.5px;color:var(--weak);}
.quote-grid{display:grid;grid-template-columns:1fr 1fr;gap:24px;}
.quote{position:relative;padding-top:44px;}
.quote::before{content:"“";position:absolute;top:6px;left:24px;font-size:48px;line-height:1;color:rgba(20,96,122,.18);font-family:Georgia,serif;}
.quote p{font-size:15px;color:var(--muted);}
.quote-by{font-size:13px;color:var(--ink);font-weight:600;}

/* pricing */
.price-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:24px;align-items:start;}
.price-card{background:#fff;border:1px solid var(--line);border-radius:var(--r-card);padding:26px;box-shadow:var(--sh-1);position:relative;}
.price-card.featured{border-color:var(--brand);box-shadow:var(--sh-3);transform:scale(1.035);z-index:2;}
.price-card .tag{position:absolute;top:-12px;right:22px;background:var(--accent);color:#fff;font-size:12px;font-weight:600;border-radius:999px;padding:4px 12px;}
.price-card h3{font-size:18px;margin-bottom:6px;}
.price-num{font-size:30px;font-weight:700;color:var(--accent);line-height:1.3;}
.price-num small{font-size:13px;color:var(--weak);font-weight:500;margin-left:4px;}
.price-desc{font-size:13.5px;color:var(--muted);margin:8px 0 16px;}
.price-list{list-style:none;padding:0;margin:0 0 20px;}
.price-list li{display:flex;gap:9px;align-items:flex-start;font-size:13.5px;color:var(--muted);margin-bottom:9px;}
.price-list li svg{width:16px;height:16px;flex:0 0 auto;margin-top:4px;stroke:var(--brand);fill:none;stroke-width:2.2;}

/* faq */
.faq-layout{display:grid;grid-template-columns:4fr 8fr;gap:40px;align-items:start;}
.faq-card{background:#fff;border:1px solid var(--line);border-radius:var(--r-card);box-shadow:var(--sh-1);overflow:hidden;}
.faq-card details{border-bottom:1px solid var(--divider);}
.faq-card details:last-child{border-bottom:0;}
.faq-card summary{list-style:none;cursor:pointer;display:flex;align-items:center;justify-content:space-between;gap:16px;padding:18px 22px;font-size:16px;font-weight:600;color:var(--ink);}
.faq-card summary::-webkit-details-marker{display:none;}
.faq-plus{width:24px;height:24px;flex:0 0 auto;border-radius:999px;background:var(--soft);display:inline-flex;align-items:center;justify-content:center;transition:transform .2s ease-out,background .2s ease-out;}
.faq-plus svg{width:12px;height:12px;stroke:var(--muted);fill:none;stroke-width:2;}
.faq-card details[open] .faq-plus{transform:rotate(45deg);background:rgba(20,96,122,.1);}
.faq-card details[open] .faq-plus svg{stroke:var(--brand);}
.faq-answer{padding:0 22px 20px;font-size:14.5px;line-height:1.85;color:var(--muted);}

/* cta */
.cta-card{position:relative;overflow:hidden;background:rgba(20,96,122,.06);border:1px solid rgba(20,96,122,.2);border-radius:var(--r-lg);padding:44px;display:flex;flex-wrap:wrap;gap:24px;align-items:center;justify-content:space-between;}
.cta-card h2{font-size:26px;margin-bottom:8px;}
.cta-card p{color:var(--muted);margin:0;max-width:640px;}
.cta-deco{position:absolute;right:-30px;bottom:-30px;width:280px;height:280px;pointer-events:none;opacity:.5;}

/* footer */
.site-footer{background:#0E2430;color:#C7D3DB;padding:64px 0 0;margin-top:0;}
.footer-grid{display:grid;grid-template-columns:1.4fr 1fr 1fr 1fr;gap:36px;padding-bottom:44px;}
.site-footer h4{color:#fff;font-size:15px;margin-bottom:14px;font-weight:600;}
.site-footer a{color:#C7D3DB;font-size:14px;}
.site-footer a:hover{color:#fff;}
.footer-brand{display:flex;align-items:center;gap:10px;margin-bottom:14px;}
.footer-brand b{color:#fff;font-size:16px;}
.footer-list{list-style:none;padding:0;margin:0;}
.footer-list li{margin-bottom:10px;}
.footer-bottom{border-top:1px solid rgba(255,255,255,.1);padding:20px 0 26px;font-size:12.5px;color:#8FA3AF;display:flex;flex-wrap:wrap;gap:12px;justify-content:space-between;align-items:center;}

/* floating cta */
.float-cta{position:fixed;right:24px;bottom:28px;z-index:50;opacity:0;transform:translateY(12px);pointer-events:none;transition:opacity .25s ease-out,transform .25s ease-out;}
.float-cta.show{opacity:1;transform:translateY(0);pointer-events:auto;}
.float-cta a{display:inline-flex;align-items:center;gap:8px;background:var(--brand);color:#fff;font-size:14px;font-weight:600;border-radius:999px;padding:13px 22px;box-shadow:var(--sh-3);}
.float-cta a:hover{background:var(--brand-dark);color:#fff;}
.float-cta svg{width:17px;height:17px;stroke:#fff;fill:none;stroke-width:1.8;}
.mobile-bar{display:none;position:fixed;left:0;right:0;bottom:0;z-index:50;background:#fff;border-top:1px solid var(--line);padding:10px 16px calc(10px + env(safe-area-inset-bottom));align-items:center;justify-content:space-between;gap:12px;}
.mobile-bar .mb-note{font-size:12.5px;color:var(--weak);}
.mobile-bar .btn{padding:10px 18px;font-size:14px;}

/* responsive */
@media (max-width:1023px){
  .container{padding:0 24px;}
  h1{font-size:34px;}
  h2{font-size:26px;}
  .hero{padding:56px 0 64px;min-height:auto;}
  .hero-grid{grid-template-columns:1fr;gap:36px;}
  .section{padding:80px 0;}
  .feature-grid{grid-template-columns:1fr 1fr;}
  .col-8,.col-4,.col-6{grid-column:span 1;}
  .feature-lead{grid-template-columns:1fr;}
  .feature-lead .fl-media{min-height:220px;}
  .demo-grid{grid-template-columns:1fr;gap:28px;}
  .steps{grid-template-columns:1fr 1fr;}
  .news-grid{grid-template-columns:1fr 1fr;}
  .metrics{grid-template-columns:1fr 1fr;}
  .price-grid{grid-template-columns:1fr;}
  .price-card.featured{transform:none;}
  .faq-layout{grid-template-columns:1fr;gap:24px;}
  .footer-grid{grid-template-columns:1fr 1fr;}
  .float-cta{display:none;}
  .mobile-bar{display:flex;}
  body{padding-bottom:78px;}
}
@media (max-width:767px){
  .container{padding:0 16px;}
  h1{font-size:28px;}
  h2{font-size:23px;}
  h3{font-size:18px;}
  .nav-links,.nav-right .btn-primary{display:none;}
  .nav-toggle{display:inline-flex;}
  .nav-panel{margin:8px 0;}
  .anchor-wrap{top:60px;}
  .section,.section-sm{padding:60px 0;}
  .feature-grid{grid-template-columns:1fr;}
  .steps{grid-template-columns:1fr;}
  .news-grid{grid-template-columns:1fr;}
  .metrics{grid-template-columns:1fr 1fr;}
  .quote-grid{grid-template-columns:1fr;}
  .cta-card{padding:28px;flex-direction:column;align-items:flex-start;}
  .footer-grid{grid-template-columns:1fr 1fr;gap:26px;}
  .hero-stats{gap:8px;}
}
@media (prefers-reduced-motion:reduce){
  *{transition:opacity .2s ease-out !important;animation:none !important;}
  .card-hover:hover,.post-card:hover,.btn:hover,.nav-card:hover{transform:none !important;}
  html{scroll-behavior:auto;}
}

/* roulang page: article */
:root {
    --brand: #14607A;
    --brand-dark: #0E4759;
    --brand-tint: #EEF4F7;
    --accent: #E8873A;
    --bg: #F6F8FA;
    --surface: #FFFFFF;
    --text: #16232E;
    --text-2: #5B6B7A;
    --text-3: #8A98A5;
    --line: #E3E9EE;
    --divider: #EDF1F4;
    --ok: #2E8B6E;
    --warn: #C4553B;
    --r-card: 16px;
    --r-panel: 20px;
    --r-btn: 10px;
    --sh-1: 0 1px 2px rgba(16, 42, 58, .06);
    --sh-2: 0 8px 20px -10px rgba(16, 42, 58, .14);
    --sh-3: 0 18px 40px -18px rgba(16, 42, 58, .22);
    --font-sans: "PingFang SC", "Microsoft YaHei", "Hiragino Sans GB", "Source Han Sans SC", system-ui, sans-serif;
    --wrap: 1200px;
  }

  * { box-sizing: border-box; }
  html { -webkit-text-size-adjust: 100%; scroll-behavior: smooth; }
  body {
    margin: 0;
    background: var(--bg);
    color: var(--text);
    font-family: var(--font-sans);
    font-size: 16px;
    line-height: 1.78;
    -webkit-font-smoothing: antialiased;
  }
  img { max-width: 100%; display: block; background: var(--brand-tint); }
  a { color: var(--brand); text-decoration: none; text-underline-offset: 4px; transition: color 200ms ease-out, background 200ms ease-out, border-color 200ms ease-out, box-shadow 200ms ease-out, transform 200ms ease-out; }
  a:hover { color: var(--brand-dark); }
  button { font-family: inherit; cursor: pointer; }
  h1, h2, h3, h4 { margin: 0; color: var(--text); font-weight: 700; }
  p { margin: 0 0 1.2em; }
  ul, ol { margin: 0; padding: 0; list-style: none; }
  :focus-visible { outline: 2px solid var(--brand); outline-offset: 2px; border-radius: 4px; }

  .container { width: 100%; max-width: var(--wrap); margin: 0 auto; padding: 0 32px; }

  /* ============ 顶部导航 ============ */
  .site-header {
    position: sticky; top: 0; z-index: 60;
    background: rgba(255, 255, 255, .96);
    border-bottom: 1px solid var(--line);
    transition: box-shadow 200ms ease-out;
  }
  .site-header.is-scrolled { box-shadow: var(--sh-2); }
  .nav-panel {
    display: flex; align-items: center; gap: 16px;
    min-height: 72px;
  }
  .brand { display: inline-flex; align-items: center; gap: 10px; flex: none; }
  .brand-mark { width: 32px; height: 32px; flex: none; }
  .brand-text { display: flex; flex-direction: column; line-height: 1.15; }
  .brand-text b { font-size: 16px; font-weight: 700; color: var(--text); }
  .brand-text span { font-size: 12.5px; color: var(--text-2); }
  .nav-links { display: flex; align-items: center; gap: 6px; margin-left: auto; }
  .nav-card {
    display: inline-flex; align-items: center; gap: 8px;
    padding: 8px 12px; border-radius: var(--r-btn);
    font-size: 14.5px; color: var(--text-2);
    border: 1px solid transparent; position: relative;
  }
  .nav-card svg { width: 20px; height: 20px; fill: none; stroke: currentColor; stroke-width: 1.6; stroke-linecap: round; stroke-linejoin: round; }
  .nav-card:hover { background: var(--brand-tint); border-color: rgba(20, 96, 122, .2); color: var(--brand-dark); transform: translateY(-2px); }
  .nav-card.active { background: rgba(20, 96, 122, .08); color: var(--brand); border-color: rgba(20, 96, 122, .16); }
  .nav-card.active::after {
    content: ""; position: absolute; left: 12px; right: 12px; bottom: 2px;
    height: 2px; border-radius: 2px; background: var(--brand);
  }
  .nav-actions { display: flex; align-items: center; gap: 10px; flex: none; }

  .btn {
    display: inline-flex; align-items: center; justify-content: center; gap: 8px;
    border-radius: var(--r-btn); font-weight: 600; font-size: 15px;
    padding: 12px 22px; border: 1px solid transparent; line-height: 1.2;
    transition: all 200ms ease-out; white-space: nowrap;
  }
  .btn-primary { background: var(--brand); color: #fff; box-shadow: var(--sh-1); }
  .btn-primary:hover { background: var(--brand-dark); color: #fff; transform: translateY(-1px); box-shadow: var(--sh-2); }
  .btn-ghost { background: #fff; color: var(--brand); border-color: rgba(20, 96, 122, .3); }
  .btn-ghost:hover { background: rgba(20, 96, 122, .06); color: var(--brand-dark); transform: translateY(-1px); }
  .btn-link { color: var(--brand); padding: 0; font-weight: 600; }
  .btn-link:hover { text-decoration: underline; text-underline-offset: 4px; }
  .btn-sm { padding: 9px 16px; font-size: 14px; }
  .btn-accent { background: var(--accent); color: #fff; }
  .btn-accent:hover { background: #CE7130; color: #fff; transform: translateY(-1px); }

  .nav-toggle {
    display: none; width: 42px; height: 42px; border-radius: 10px;
    border: 1px solid var(--line); background: #fff; align-items: center; justify-content: center;
  }
  .nav-toggle span { display: block; width: 18px; height: 2px; background: var(--text); border-radius: 2px; position: relative; }
  .nav-toggle span::before, .nav-toggle span::after {
    content: ""; position: absolute; left: 0; width: 18px; height: 2px; background: var(--text); border-radius: 2px;
  }
  .nav-toggle span::before { top: -6px; }
  .nav-toggle span::after { top: 6px; }

  .mobile-drawer {
    position: fixed; inset: 60px 0 0 0; background: #fff; z-index: 70;
    padding: 20px 16px 96px; overflow-y: auto; display: none;
  }
  .mobile-drawer.open { display: block; }
  .drawer-grid { display: grid; grid-template-columns: 1fr 1fr; gap: 12px; }
  .drawer-card {
    display: flex; align-items: center; gap: 10px; padding: 14px 12px;
    border: 1px solid var(--line); border-radius: 12px; background: #fff;
    color: var(--text-2); font-size: 14.5px;
  }
  .drawer-card svg { width: 20px; height: 20px; fill: none; stroke: currentColor; stroke-width: 1.6; stroke-linecap: round; stroke-linejoin: round; }
  .drawer-card.active { background: rgba(20, 96, 122, .08); color: var(--brand); border-color: rgba(20, 96, 122, .2); }
  .drawer-foot { position: fixed; left: 0; right: 0; bottom: 0; padding: 10px 16px calc(12px + env(safe-area-inset-bottom)); background: #fff; border-top: 1px solid var(--line); display: none; }
  .mobile-drawer.open ~ .drawer-foot { display: block; }

  /* ============ 面包屑 ============ */
  .breadcrumb { padding: 24px 0 0; font-size: 12.5px; color: var(--text-3); }
  .breadcrumb ol { display: flex; flex-wrap: wrap; align-items: center; gap: 6px; }
  .breadcrumb a { color: var(--text-2); }
  .breadcrumb a:hover { color: var(--brand); }
  .breadcrumb li:not(:last-child)::after { content: "/"; margin-left: 6px; color: var(--text-3); }
  .breadcrumb .current { color: var(--text-3); max-width: 320px; overflow: hidden; text-overflow: ellipsis; white-space: nowrap; display: inline-block; vertical-align: bottom; }

  /* ============ 文章头部 ============ */
  .article-head { padding: 20px 0 0; }
  .article-head h1 { font-size: 38px; line-height: 1.28; font-weight: 700; max-width: 900px; }
  .meta-row { display: flex; flex-wrap: wrap; align-items: center; gap: 10px; margin-top: 18px; font-size: 12.5px; color: var(--text-3); }
  .badge { display: inline-flex; align-items: center; border-radius: 999px; padding: 4px 12px; font-size: 12.5px; line-height: 1.5; }
  .badge-brand { background: rgba(20, 96, 122, .08); color: var(--brand); }
  .badge-soft { background: #EEF1F4; color: var(--text-2); }
  .head-divider { height: 1px; background: var(--divider); margin: 40px 0 0; }

  /* ============ 布局 ============ */
  .article-layout { display: grid; grid-template-columns: minmax(0, 8fr) minmax(0, 4fr); gap: 40px; padding: 40px 0 0; align-items: start; }

  /* ============ 正文 ============ */
  .prose-cn { max-width: 740px; font-size: 16px; line-height: 1.9; color: var(--text); }
  .prose-cn > *:first-child { margin-top: 0; }
  .prose-cn p { margin: 0 0 1.2em; }
  .prose-cn h2 {
    font-size: 24px; line-height: 1.4; font-weight: 700;
    margin: 48px 0 16px; padding-left: 14px; position: relative;
  }
  .prose-cn h2::before {
    content: ""; position: absolute; left: 0; top: 6px; width: 4px; height: 20px;
    border-radius: 2px; background: var(--brand);
  }
  .prose-cn h3 { font-size: 19px; line-height: 1.5; font-weight: 600; margin: 32px 0 12px; }
  .prose-cn ul, .prose-cn ol { margin: 0 0 1.3em; padding-left: 4px; }
  .prose-cn ul li, .prose-cn ol li { position: relative; padding-left: 22px; line-height: 1.8; margin-bottom: 8px; color: var(--text-2); }
  .prose-cn ul li::before {
    content: ""; position: absolute; left: 4px; top: .78em; width: 7px; height: 7px;
    border-radius: 50%; background: var(--brand); opacity: .75;
  }
  .prose-cn ol { counter-reset: pcount; }
  .prose-cn ol li::before {
    counter-increment: pcount; content: counter(pcount);
    position: absolute; left: 0; top: 0; color: var(--brand); font-weight: 600; font-size: 15px;
  }
  .prose-cn blockquote {
    margin: 24px 0; padding: 16px 20px; background: var(--brand-tint);
    border-left: 3px solid var(--brand); border-radius: 0 12px 12px 0; color: var(--text-2);
  }
  .prose-cn blockquote p:last-child { margin-bottom: 0; }
  .prose-cn img { border-radius: 12px; margin: 24px auto; }
  .prose-cn figure { margin: 24px 0; }
  .prose-cn figcaption { text-align: center; font-size: 12.5px; color: var(--text-3); margin-top: 8px; }
  .prose-cn a { text-decoration: underline; text-underline-offset: 4px; }
  .prose-cn strong { color: var(--text); font-weight: 600; }
  .prose-cn hr { border: 0; border-top: 1px solid var(--divider); margin: 40px 0; }
  .prose-cn table { width: 100%; border-collapse: collapse; margin: 24px 0; font-size: 14.5px; }
  .prose-cn th, .prose-cn td { border: 1px solid var(--line); padding: 10px 14px; text-align: left; }
  .prose-cn th { background: var(--brand-tint); color: var(--brand-dark); }

  .empty-state { text-align: center; padding: 56px 24px; background: #fff; border: 1px solid var(--line); border-radius: var(--r-panel); box-shadow: var(--sh-1); }
  .empty-state svg { width: 44px; height: 44px; fill: none; stroke: var(--brand); stroke-width: 1.5; stroke-linecap: round; stroke-linejoin: round; margin: 0 auto 16px; }
  .empty-state h2 { font-size: 21px; margin: 0 0 10px; padding: 0; }
  .empty-state h2::before { display: none; }
  .empty-state p { color: var(--text-2); font-size: 15px; margin-bottom: 20px; }

  /* ============ 侧栏 ============ */
  .sidebar { position: sticky; top: 96px; display: flex; flex-direction: column; gap: 20px; }
  .side-card { background: var(--surface); border: 1px solid var(--line); border-radius: var(--r-card); box-shadow: var(--sh-1); padding: 22px; }
  .side-card h3 { font-size: 15px; font-weight: 600; margin: 0 0 14px; display: flex; align-items: center; gap: 8px; }
  .side-card h3 svg { width: 18px; height: 18px; fill: none; stroke: var(--brand); stroke-width: 1.6; stroke-linecap: round; stroke-linejoin: round; }
  .toc-list { display: flex; flex-direction: column; gap: 2px; font-size: 14px; }
  .toc-list a { display: block; padding: 7px 10px; border-radius: 8px; color: var(--text-2); border-left: 2px solid transparent; }
  .toc-list a:hover { background: var(--brand-tint); color: var(--brand-dark); }
  .toc-list a.active { background: rgba(20, 96, 122, .08); color: var(--brand); border-left-color: var(--brand); font-weight: 600; }
  .side-links { display: flex; flex-direction: column; gap: 12px; }
  .side-links a { display: flex; justify-content: space-between; gap: 10px; font-size: 14px; color: var(--text-2); }
  .side-links a:hover { color: var(--brand); }
  .side-links span { color: var(--text-3); font-size: 12.5px; flex: none; }
  .side-cta { background: rgba(20, 96, 122, .06); border-color: rgba(20, 96, 122, .2); }
  .side-cta p { font-size: 13.5px; color: var(--text-2); margin: 0 0 14px; }

  /* ============ 上下篇 ============ */
  .post-nav { display: grid; grid-template-columns: 1fr 1fr; gap: 20px; margin-top: 48px; }
  .post-nav a {
    display: block; background: #fff; border: 1px solid var(--line); border-radius: var(--r-card);
    padding: 20px; box-shadow: var(--sh-1); color: var(--text);
  }
  .post-nav a:hover { box-shadow: var(--sh-2); transform: translateY(-3px); border-color: rgba(20, 96, 122, .25); }
  .post-nav .dir { font-size: 12.5px; color: var(--text-3); display: block; margin-bottom: 8px; }
  .post-nav .ttl { font-size: 16px; font-weight: 600; display: block; overflow: hidden; text-overflow: ellipsis; white-space: nowrap; }
  .post-nav a:hover .ttl { color: var(--brand); }

  /* ============ 相关推荐 ============ */
  .related-block { margin-top: 72px; }
  .sec-head { display: flex; align-items: flex-end; justify-content: space-between; gap: 20px; margin-bottom: 28px; }
  .sec-head h2 { font-size: 26px; font-weight: 700; }
  .sec-head p { font-size: 14px; color: var(--text-2); margin: 6px 0 0; }
  .card-grid { display: grid; grid-template-columns: repeat(3, minmax(0, 1fr)); gap: 24px; }
  .news-card {
    display: flex; flex-direction: column; background: #fff; border: 1px solid var(--line);
    border-radius: var(--r-card); overflow: hidden; box-shadow: var(--sh-1); color: var(--text);
  }
  .news-card:hover { transform: translateY(-3px); box-shadow: var(--sh-2); }
  .news-card .thumb { aspect-ratio: 16 / 9; overflow: hidden; background: var(--brand-tint); }
  .news-card .thumb img { width: 100%; height: 100%; object-fit: cover; object-position: center; }
  .news-card .body { padding: 20px; display: flex; flex-direction: column; gap: 10px; flex: 1; }
  .news-card .top-line { display: flex; align-items: center; gap: 10px; }
  .news-card h3 { font-size: 17px; font-weight: 600; line-height: 1.5; }
  .news-card:hover h3 { color: var(--brand); }
  .news-card p { font-size: 14px; color: var(--text-2); margin: 0; display: -webkit-box; -webkit-line-clamp: 2; -webkit-box-orient: vertical; overflow: hidden; }
  .news-card .more { margin-top: auto; font-size: 14px; font-weight: 600; color: var(--brand); }

  .back-row { display: flex; flex-wrap: wrap; align-items: center; justify-content: space-between; gap: 16px; margin-top: 40px; }

  /* ============ 结尾 CTA ============ */
  .cta-band {
    margin: 72px 0 0; padding: 40px; border-radius: var(--r-panel);
    background: rgba(20, 96, 122, .06); border: 1px solid rgba(20, 96, 122, .2);
    display: flex; align-items: center; justify-content: space-between; gap: 28px; position: relative; overflow: hidden;
  }
  .cta-band .deco { position: absolute; right: -40px; top: -30px; width: 260px; height: 260px; opacity: .5; pointer-events: none; }
  .cta-band h2 { font-size: 24px; margin-bottom: 8px; position: relative; }
  .cta-band p { margin: 0; font-size: 15px; color: var(--text-2); position: relative; }
  .cta-band .btn { position: relative; flex: none; }

  /* ============ 页脚 ============ */
  .site-footer { background: #0E2430; color: #C7D3DB; margin-top: 96px; padding: 64px 0 24px; }
  .footer-grid { display: grid; grid-template-columns: 1.6fr 1fr 1fr 1fr; gap: 40px; }
  .footer-brand { display: flex; align-items: center; gap: 10px; margin-bottom: 14px; }
  .footer-brand b { color: #fff; font-size: 16px; }
  .footer-brand .brand-mark { width: 30px; height: 30px; }
  .site-footer h4 { color: #fff; font-size: 15px; font-weight: 600; margin: 0 0 16px; }
  .footer-list { display: flex; flex-direction: column; gap: 10px; font-size: 14px; }
  .site-footer a { color: #C7D3DB; }
  .site-footer a:hover { color: #fff; text-decoration: underline; text-underline-offset: 4px; }
  .footer-bottom {
    margin-top: 48px; padding-top: 20px; border-top: 1px solid rgba(255, 255, 255, .12);
    display: flex; flex-wrap: wrap; justify-content: space-between; gap: 10px; font-size: 12.5px; color: #8FA3AF;
  }

  /* ============ 浮动 CTA ============ */
  .float-cta {
    position: fixed; right: 24px; bottom: 28px; z-index: 55;
    display: inline-flex; align-items: center; gap: 8px;
    padding: 14px 22px; border-radius: 999px; background: var(--brand); color: #fff;
    font-weight: 600; font-size: 15px; box-shadow: var(--sh-3);
    opacity: 0; transform: translateY(12px); pointer-events: none;
  }
  .float-cta.show { opacity: 1; transform: translateY(0); pointer-events: auto; }
  .float-cta:hover { background: var(--brand-dark); color: #fff; }
  .float-cta svg { width: 18px; height: 18px; fill: none; stroke: currentColor; stroke-width: 1.8; stroke-linecap: round; stroke-linejoin: round; }
  .mobile-bar { display: none; }

  /* ============ 响应式 ============ */
  @media (max-width: 1023px) {
    .container { padding: 0 24px; }
    .nav-links { display: none; }
    .nav-toggle { display: inline-flex; }
    .nav-actions .btn-primary { display: none; }
    .article-layout { grid-template-columns: 1fr; gap: 32px; }
    .sidebar { position: static; }
    .article-head h1 { font-size: 32px; }
    .footer-grid { grid-template-columns: 1fr 1fr; gap: 32px; }
    .card-grid { grid-template-columns: repeat(2, minmax(0, 1fr)); }
  }
  @media (max-width: 767px) {
    body { font-size: 15.5px; }
    .container { padding: 0 16px; }
    .nav-panel { min-height: 60px; }
    .site-header .brand-text span { display: none; }
    .breadcrumb { padding-top: 16px; }
    .article-head h1 { font-size: 28px; }
    .prose-cn { font-size: 15.5px; max-width: 100%; }
    .prose-cn h2 { font-size: 21px; margin-top: 36px; }
    .cta-band { flex-direction: column; align-items: flex-start; padding: 28px 20px; }
    .cta-band .btn { width: 100%; }
    .post-nav { grid-template-columns: 1fr; }
    .card-grid { grid-template-columns: 1fr; }
    .float-cta { display: none; }
    .mobile-bar {
      position: fixed; left: 0; right: 0; bottom: 0; z-index: 60; display: block;
      background: #fff; border-top: 1px solid var(--line);
      padding: 10px 16px calc(12px + env(safe-area-inset-bottom));
    }
    .mobile-bar .inner { display: flex; align-items: center; justify-content: space-between; gap: 12px; }
    .mobile-bar .tip { font-size: 12.5px; color: var(--text-2); line-height: 1.4; }
    .mobile-bar .tip a { display: block; color: var(--brand); font-weight: 600; }
    .site-footer { margin-top: 64px; padding: 48px 0 96px; }
    .footer-grid { grid-template-columns: 1fr; gap: 28px; }
    .side-card { padding: 20px; }
  }
  @media (max-width: 420px) {
    .mobile-bar .btn { padding: 10px 16px; font-size: 14px; }
  }
  @media (prefers-reduced-motion: reduce) {
    * { transition-duration: .01ms !important; animation-duration: .01ms !important; }
    .news-card:hover, .post-nav a:hover, .nav-card:hover, .btn:hover { transform: none; }
  }

/* roulang page: category1 */
:root{
    --brand:#14607A;
    --brand-deep:#0E4759;
    --accent:#E8873A;
    --bg:#F6F8FA;
    --surface:#FFFFFF;
    --soft:#EEF4F7;
    --ink:#16232E;
    --ink-2:#5B6B7A;
    --ink-3:#8A98A5;
    --line:#E3E9EE;
    --divider:#EDF1F4;
    --ok:#2E8B6E;
    --warn:#C4553B;
    --r-card:16px;
    --r-panel:20px;
    --r-ctrl:10px;
    --sh-1:0 1px 2px rgba(16,42,58,.06);
    --sh-2:0 8px 20px -10px rgba(16,42,58,.14);
    --sh-3:0 18px 40px -18px rgba(16,42,58,.22);
    --font-sans:"PingFang SC","Microsoft YaHei","Hiragino Sans GB","Source Han Sans SC",system-ui,sans-serif;
    --t:200ms ease-out;
  }
  *,*::before,*::after{box-sizing:border-box;}
  html{-webkit-text-size-adjust:100%;scroll-behavior:smooth;}
  body{
    margin:0;
    font-family:var(--font-sans);
    font-size:16px;
    line-height:1.78;
    color:var(--ink);
    background:var(--bg);
  }
  img{max-width:100%;display:block;}
  a{color:var(--brand);text-decoration:none;text-underline-offset:4px;}
  a:hover{text-decoration:underline;}
  button{font-family:inherit;}
  h1,h2,h3,h4,p,ul,ol{margin:0;}
  ul{padding-left:1.1em;}
  :focus-visible{outline:2px solid var(--brand);outline-offset:2px;border-radius:4px;}

  .container{
    max-width:1200px;
    margin:0 auto;
    padding:0 32px;
  }

  /* ---------- 顶部导航 ---------- */
  .site-header{
    position:sticky;
    top:0;
    z-index:60;
    background:#fff;
    border-bottom:1px solid var(--line);
    transition:box-shadow var(--t);
  }
  .site-header.is-scrolled{box-shadow:var(--sh-2);}
  .nav-shell{
    display:flex;
    align-items:center;
    gap:16px;
    background:var(--surface);
    border:1px solid var(--line);
    border-radius:var(--r-card);
    padding:10px 14px;
    margin:10px 0;
    min-height:52px;
  }
  .brand{
    display:flex;
    align-items:center;
    gap:10px;
    flex:0 0 auto;
    color:var(--ink);
    font-weight:700;
    font-size:16px;
  }
  .brand:hover{text-decoration:none;}
  .brand-mark{width:30px;height:30px;flex:0 0 auto;}
  .brand-text{display:flex;flex-direction:column;line-height:1.15;}
  .brand-text small{
    font-size:12.5px;
    font-weight:500;
    color:var(--ink-3);
    letter-spacing:0;
  }
  .nav-links{
    display:flex;
    align-items:center;
    gap:6px;
    flex:1 1 auto;
    margin-left:8px;
  }
  .nav-card{
    display:inline-flex;
    align-items:center;
    gap:7px;
    padding:8px 12px;
    border-radius:var(--r-ctrl);
    border:1px solid transparent;
    color:var(--ink-2);
    font-size:14px;
    font-weight:500;
    transition:background var(--t),border-color var(--t),transform var(--t),color var(--t);
    text-decoration:none;
    position:relative;
    white-space:nowrap;
  }
  .nav-card svg{
    width:20px;height:20px;
    fill:none;
    stroke:currentColor;
    stroke-width:1.5;
    stroke-linecap:round;
    stroke-linejoin:round;
    flex:0 0 auto;
  }
  .nav-card:hover{
    background:var(--soft);
    border-color:rgba(20,96,122,.2);
    color:var(--brand);
    transform:translateY(-2px);
    text-decoration:none;
  }
  .nav-card.active{
    background:rgba(20,96,122,.08);
    color:var(--brand);
    font-weight:600;
  }
  .nav-card.active::after{
    content:"";
    position:absolute;
    left:12px;right:12px;bottom:2px;
    height:2px;
    border-radius:2px;
    background:var(--brand);
  }
  .nav-cta{flex:0 0 auto;}
  .hamburger{
    display:none;
    width:42px;height:42px;
    align-items:center;justify-content:center;
    border:1px solid var(--line);
    background:#fff;
    border-radius:var(--r-ctrl);
    cursor:pointer;
    margin-left:auto;
  }
  .hamburger span{
    display:block;width:18px;height:2px;background:var(--ink);border-radius:2px;position:relative;
  }
  .hamburger span::before,.hamburger span::after{
    content:"";position:absolute;left:0;width:18px;height:2px;background:var(--ink);border-radius:2px;
  }
  .hamburger span::before{top:-6px;}
  .hamburger span::after{top:6px;}

  /* ---------- 按钮 ---------- */
  .btn{
    display:inline-flex;
    align-items:center;
    justify-content:center;
    gap:8px;
    padding:12px 22px;
    border-radius:var(--r-ctrl);
    font-size:15px;
    font-weight:600;
    line-height:1.2;
    border:1px solid transparent;
    cursor:pointer;
    transition:background var(--t),color var(--t),border-color var(--t),transform var(--t),box-shadow var(--t);
    text-decoration:none;
  }
  .btn:hover{text-decoration:none;transform:translateY(-1px);}
  .btn-primary{background:var(--brand);color:#fff;}
  .btn-primary:hover{background:var(--brand-deep);box-shadow:var(--sh-2);}
  .btn-secondary{background:#fff;color:var(--brand);border-color:rgba(20,96,122,.3);}
  .btn-secondary:hover{background:rgba(20,96,122,.06);}
  .btn-link{
    padding:0;
    color:var(--brand);
    font-weight:600;
    font-size:14px;
    background:none;
    border:0;
    text-decoration:underline;
    text-underline-offset:4px;
  }
  .btn-link:hover{color:var(--brand-deep);}
  .btn-sm{padding:6px 12px;font-size:12.5px;border-radius:8px;font-weight:600;}
  .nav-cta .btn{padding:10px 18px;font-size:14px;}

  /* ---------- 通用排版 ---------- */
  .section{padding:96px 0;}
  .section-tight{padding:72px 0;}
  .eyebrow{
    display:inline-flex;align-items:center;gap:8px;
    font-size:12.5px;font-weight:600;color:var(--brand);
    background:rgba(20,96,122,.08);
    border-radius:999px;
    padding:5px 12px;
    margin-bottom:14px;
  }
  .eyebrow::before{
    content:"";width:6px;height:6px;border-radius:50%;background:var(--accent);
  }
  h1{font-size:42px;font-weight:700;line-height:1.22;}
  h2{font-size:30px;font-weight:700;line-height:1.3;}
  h3{font-size:21px;font-weight:600;line-height:1.45;}
  .lead{font-size:16px;color:var(--ink-2);line-height:1.78;}
  .meta-text{font-size:12.5px;color:var(--ink-3);}
  .sec-head{max-width:640px;margin-bottom:36px;}
  .sec-head p{margin-top:12px;color:var(--ink-2);}

  .breadcrumb{
    display:flex;flex-wrap:wrap;align-items:center;gap:8px;
    font-size:12.5px;color:var(--ink-3);
    padding:24px 0 0;
  }
  .breadcrumb a{color:var(--ink-2);}
  .breadcrumb a:hover{color:var(--brand);}
  .breadcrumb .sep{color:#C6D0D8;}
  .breadcrumb .current{color:var(--ink);font-weight:600;}

  /* ---------- 分类 Hero（收窄） ---------- */
  .cat-hero{
    position:relative;
    overflow:hidden;
    padding:44px 0 72px;
  }
  .cat-hero::before{
    content:"";
    position:absolute;
    inset:-40px -10% auto -10%;
    height:420px;
    background-image:url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' width='320' height='180' viewBox='0 0 320 180'%3E%3Cg fill='none' stroke='%2314607A' stroke-width='1' stroke-opacity='.06'%3E%3Cpath d='M10 130h120a30 30 0 0 0 4-59.7A44 44 0 0 0 48 60a31 31 0 0 0-38 70Z'/%3E%3Cpath d='M180 150h120a30 30 0 0 0 4-59.7A44 44 0 0 0 218 80a31 31 0 0 0-38 70Z'/%3E%3Cpath d='M70 175v-32a19 19 0 0 1 38 0v32'/%3E%3C/g%3E%3C/svg%3E");
    background-repeat:repeat;
    pointer-events:none;
    opacity:.9;
  }
  .cat-hero-grid{
    position:relative;
    display:grid;
    grid-template-columns:7fr 5fr;
    gap:40px;
    align-items:center;
    min-height:330px;
  }
  .cat-hero h1{margin-bottom:16px;}
  .cat-hero .lead{max-width:560px;}
  .hero-actions{display:flex;flex-wrap:wrap;gap:12px;margin-top:26px;}
  .media-panel{
    border-radius:var(--r-panel);
    overflow:hidden;
    box-shadow:var(--sh-2);
    background:var(--soft);
    aspect-ratio:16/10;
  }
  .media-panel img{
    width:100%;height:100%;object-fit:cover;object-position:center;
  }
  .hero-facts{
    display:flex;flex-wrap:wrap;gap:10px 22px;
    margin-top:26px;
    padding-top:22px;
    border-top:1px solid var(--line);
  }
  .hero-facts div{font-size:12.5px;color:var(--ink-3);}
  .hero-facts b{
    display:block;
    font-size:20px;
    color:var(--brand);
    line-height:1.3;
    font-weight:700;
  }

  /* ---------- 卡片 ---------- */
  .card{
    background:var(--surface);
    border:1px solid var(--line);
    border-radius:var(--r-card);
    box-shadow:var(--sh-1);
    padding:24px;
    transition:transform var(--t),box-shadow var(--t),border-color var(--t);
  }
  .card:hover{transform:translateY(-3px);box-shadow:var(--sh-2);}
  .card h3{font-size:19px;}

  /* ---------- Zigzag 图文 ---------- */
  .zig-row{
    display:grid;
    grid-template-columns:5fr 7fr;
    gap:40px;
    align-items:center;
    padding:34px 0;
  }
  .zig-row.reverse .zig-media{order:2;}
  .zig-row.reverse .zig-body{order:1;}
  .zig-media{
    border-radius:var(--r-panel);
    overflow:hidden;
    border:1px solid var(--line);
    background:var(--soft);
    box-shadow:var(--sh-1);
    aspect-ratio:16/11;
  }
  .zig-media img{width:100%;height:100%;object-fit:cover;object-position:center;}
  .zig-body h3{margin-bottom:14px;}
  .zig-body p{color:var(--ink-2);margin-bottom:14px;}
  .zig-body p:last-child{margin-bottom:0;}
  .tick-list{list-style:none;padding:0;margin:18px 0 0;}
  .tick-list li{
    position:relative;
    padding-left:26px;
    margin-bottom:10px;
    font-size:14.5px;
    color:var(--ink);
  }
  .tick-list li:last-child{margin-bottom:0;}
  .tick-list li::before{
    content:"";
    position:absolute;
    left:0;top:9px;
    width:14px;height:8px;
    border-left:2px solid var(--brand);
    border-bottom:2px solid var(--brand);
    transform:rotate(-45deg);
    border-radius:1px;
  }
  .zig-divider{height:1px;background:var(--divider);margin:12px 0;}

  /* ---------- 数据条 ---------- */
  .data-bar{
    display:grid;
    grid-template-columns:repeat(3,1fr);
    gap:24px;
    background:var(--surface);
    border:1px solid var(--line);
    border-radius:var(--r-panel);
    box-shadow:var(--sh-1);
    padding:28px 32px;
    margin:40px 0 8px;
  }
  .data-item{border-left:3px solid rgba(20,96,122,.18);padding-left:18px;}
  .data-item b{
    display:block;
    font-size:32px;
    font-weight:700;
    color:var(--brand);
    line-height:1.2;
  }
  .data-item b i{font-style:normal;font-size:16px;margin-left:2px;color:var(--ink-2);font-weight:600;}
  .data-item span{font-size:12.5px;color:var(--ink-2);display:block;margin-top:6px;}

  /* ---------- 步骤条 ---------- */
  .steps{list-style:none;padding:0;margin:0;}
  .steps li{
    position:relative;
    padding:0 0 26px 46px;
    border-left:1px solid var(--line);
    margin-left:14px;
  }
  .steps li:last-child{border-left-color:transparent;padding-bottom:0;}
  .steps li::before{
    content:"";
    position:absolute;
    left:-14px;top:2px;
    width:28px;height:28px;
    border-radius:50%;
    border:1.5px solid var(--line);
    background:#fff;
  }
  .steps li.is-current::before{
    background:var(--brand);
    border-color:var(--brand);
    box-shadow:0 0 0 5px rgba(20,96,122,.1);
  }
  .steps li.is-current::after{
    content:"";
    position:absolute;
    left:-8px;top:8px;
    width:16px;height:8px;
    border-left:2px solid #fff;
    border-bottom:2px solid #fff;
    transform:rotate(-45deg);
  }
  .steps h3{font-size:17px;margin-bottom:6px;}
  .steps p{color:var(--ink-2);font-size:14.5px;margin:0;}

  /* ---------- FAQ ---------- */
  .faq-card{
    background:var(--surface);
    border:1px solid var(--line);
    border-radius:var(--r-card);
    box-shadow:var(--sh-1);
    overflow:hidden;
  }
  .faq-item{border-bottom:1px solid var(--divider);}
  .faq-item:last-child{border-bottom:0;}
  .faq-item summary{
    list-style:none;
    cursor:pointer;
    display:flex;
    align-items:center;
    justify-content:space-between;
    gap:16px;
    padding:18px 22px;
    font-size:16px;
    font-weight:600;
    color:var(--ink);
    transition:background var(--t),color var(--t);
  }
  .faq-item summary::-webkit-details-marker{display:none;}
  .faq-item summary:hover{background:rgba(20,96,122,.04);color:var(--brand);}
  .faq-sign{
    flex:0 0 auto;
    width:24px;height:24px;
    border-radius:50%;
    background:var(--soft);
    color:var(--brand);
    display:inline-flex;
    align-items:center;
    justify-content:center;
    font-size:16px;
    line-height:1;
    transition:transform var(--t),background var(--t),color var(--t);
  }
  .faq-item[open] .faq-sign{
    transform:rotate(45deg);
    background:rgba(20,96,122,.12);
    color:var(--brand);
  }
  .faq-body{
    padding:0 22px 20px;
    color:var(--ink-2);
    font-size:15px;
    line-height:1.85;
  }

  /* ---------- 结尾 CTA ---------- */
  .cta-card{
    position:relative;
    overflow:hidden;
    background:rgba(20,96,122,.06);
    border:1px solid rgba(20,96,122,.2);
    border-radius:var(--r-panel);
    padding:40px;
    display:flex;
    align-items:center;
    justify-content:space-between;
    gap:32px;
  }
  .cta-card::before{
    content:"";
    position:absolute;
    right:-60px;top:-40px;
    width:280px;height:200px;
    background-image:url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' width='280' height='200' viewBox='0 0 280 200'%3E%3Cg fill='none' stroke='%2314607A' stroke-width='1' stroke-opacity='.06'%3E%3Cpath d='M10 150h120a30 30 0 0 0 4-59.7A44 44 0 0 0 48 80a31 31 0 0 0-38 70Z'/%3E%3Cpath d='M70 195v-32a19 19 0 0 1 38 0v32'/%3E%3C/g%3E%3C/svg%3E");
    background-repeat:no-repeat;
    pointer-events:none;
  }
  .cta-card h2{font-size:26px;margin-bottom:10px;}
  .cta-card p{color:var(--ink-2);max-width:620px;}
  .cta-card .btn{flex:0 0 auto;}

  /* ---------- 相关分类 ---------- */
  .rel-grid{
    display:grid;
    grid-template-columns:repeat(3,1fr);
    gap:20px;
    margin-top:32px;
  }
  .rel-card{
    display:block;
    background:var(--surface);
    border:1px solid var(--line);
    border-radius:var(--r-card);
    box-shadow:var(--sh-1);
    padding:22px;
    color:var(--ink);
    transition:transform var(--t),box-shadow var(--t),border-color var(--t);
  }
  .rel-card:hover{
    text-decoration:none;
    transform:translateY(-3px);
    box-shadow:var(--sh-2);
    border-color:rgba(20,96,122,.28);
  }
  .rel-card h3{font-size:17px;margin-bottom:8px;transition:color var(--t);}
  .rel-card:hover h3{color:var(--brand);}
  .rel-card p{font-size:14px;color:var(--ink-2);margin:0;}
  .rel-card .badge{margin-bottom:12px;}

  .badge{
    display:inline-flex;
    align-items:center;
    gap:6px;
    font-size:12.5px;
    font-weight:600;
    padding:4px 11px;
    border-radius:999px;
    background:rgba(20,96,122,.08);
    color:var(--brand);
    line-height:1.5;
  }
  .badge-soft{background:#EEF1F4;color:var(--ink-2);}

  /* ---------- 页脚 ---------- */
  .site-footer{
    background:#0E2430;
    color:#C7D3DB;
    margin-top:96px;
    padding:64px 0 28px;
    font-size:14px;
  }
  .footer-grid{
    display:grid;
    grid-template-columns:1.4fr 1fr 1fr 1fr;
    gap:36px;
  }
  .footer-brand{
    display:flex;
    align-items:center;
    gap:10px;
    color:#fff;
    font-size:16px;
    margin-bottom:14px;
  }
  .footer-brand .brand-mark{width:28px;height:28px;}
  .site-footer h4{
    color:#fff;
    font-size:14px;
    font-weight:600;
    margin:0 0 14px;
  }
  .footer-list{list-style:none;padding:0;margin:0;}
  .footer-list li{margin-bottom:10px;}
  .site-footer a{color:#C7D3DB;text-decoration:none;}
  .site-footer a:hover{color:#fff;text-decoration:underline;}
  .footer-bottom{
    margin-top:44px;
    padding-top:20px;
    border-top:1px solid rgba(199,211,219,.18);
    display:flex;
    flex-wrap:wrap;
    justify-content:space-between;
    gap:10px;
    font-size:12.5px;
    color:#9FB2BD;
  }

  /* ---------- 浮动 CTA ---------- */
  .float-cta{
    position:fixed;
    right:24px;
    bottom:28px;
    z-index:50;
    opacity:0;
    transform:translateY(12px);
    pointer-events:none;
    transition:opacity var(--t),transform var(--t);
  }
  .float-cta.show{opacity:1;transform:translateY(0);pointer-events:auto;}
  .float-cta .btn{
    border-radius:999px;
    box-shadow:var(--sh-3);
    padding:13px 24px;
  }
  .float-cta .btn svg{
    width:18px;height:18px;fill:none;stroke:currentColor;stroke-width:1.6;
    stroke-linecap:round;stroke-linejoin:round;
  }
  .mobile-bar{display:none;}

  /* ---------- 移动抽屉 ---------- */
  .drawer{
    position:fixed;
    inset:0;
    background:#fff;
    z-index:80;
    display:none;
    flex-direction:column;
    padding:16px 16px calc(16px + env(safe-area-inset-bottom));
  }
  .drawer.open{display:flex;}
  .drawer-head{
    display:flex;
    align-items:center;
    justify-content:space-between;
    padding-bottom:14px;
    border-bottom:1px solid var(--line);
  }
  .drawer-close{
    width:40px;height:40px;
    border:1px solid var(--line);
    border-radius:var(--r-ctrl);
    background:#fff;
    font-size:20px;
    color:var(--ink);
    cursor:pointer;
    line-height:1;
  }
  .drawer-links{
    display:grid;
    grid-template-columns:1fr 1fr;
    gap:12px;
    margin-top:20px;
    overflow:auto;
  }
  .drawer-links a{
    display:flex;
    align-items:center;
    gap:8px;
    padding:14px 12px;
    border:1px solid var(--line);
    border-radius:var(--r-ctrl);
    font-size:14px;
    color:var(--ink);
    font-weight:500;
    background:#fff;
  }
  .drawer-links a:hover{text-decoration:none;border-color:rgba(20,96,122,.3);background:var(--soft);}
  .drawer-links a.active{background:rgba(20,96,122,.08);color:var(--brand);border-color:rgba(20,96,122,.24);}
  .drawer-links svg{
    width:20px;height:20px;fill:none;stroke:currentColor;stroke-width:1.5;
    stroke-linecap:round;stroke-linejoin:round;flex:0 0 auto;
  }
  .drawer-foot{margin-top:auto;padding-top:16px;}

  /* ---------- 响应式 ---------- */
  @media (max-width:1023px){
    .container{padding:0 24px;}
    h1{font-size:34px;}
    h2{font-size:26px;}
    h3{font-size:19px;}
    .section{padding:76px 0;}
    .cat-hero-grid{grid-template-columns:1fr;gap:28px;min-height:0;}
    .cat-hero{padding:24px 0 56px;}
    .zig-row{grid-template-columns:1fr;gap:24px;padding:26px 0;}
    .zig-row.reverse .zig-media{order:1;}
    .zig-row.reverse .zig-body{order:2;}
    .data-bar{grid-template-columns:1fr;gap:18px;padding:24px;}
    .rel-grid{grid-template-columns:1fr 1fr;gap:16px;}
    .footer-grid{grid-template-columns:1fr 1fr;gap:28px;}
    .nav-links{display:none;}
    .nav-cta{display:none;}
    .hamburger{display:inline-flex;}
    .nav-shell{min-height:48px;}
  }
  @media (max-width:767px){
    body{font-size:15.5px;}
    .container{padding:0 16px;}
    h1{font-size:28px;}
    h2{font-size:23px;}
    h3{font-size:18px;}
    .section{padding:60px 0;}
    .section-tight{padding:52px 0;}
    .card{padding:20px;}
    .data-item b{font-size:28px;}
    .cta-card{flex-direction:column;align-items:flex-start;padding:26px 20px;gap:20px;}
    .cta-card h2{font-size:22px;}
    .floating-desktop{display:none;}
    .float-cta{display:none;}
    .mobile-bar{
      display:block;
      position:fixed;
      left:0;right:0;bottom:0;
      z-index:50;
      background:#fff;
      border-top:1px solid var(--line);
      padding:10px 16px calc(10px + env(safe-area-inset-bottom));
    }
    .mobile-bar .inner{
      display:flex;align-items:center;gap:12px;
    }
    .mobile-bar .btn{flex:1 1 auto;}
    .mobile-bar .hint{
      font-size:12.5px;color:var(--ink-3);
      text-align:center;
      margin-top:6px;
    }
    .mobile-bar .hint a{color:var(--brand);}
    .site-footer{margin-top:60px;padding:48px 0 110px;}
    .footer-grid{grid-template-columns:1fr 1fr;gap:24px;}
    .footer-bottom{flex-direction:column;gap:6px;}
    .rel-grid{grid-template-columns:1fr;}
    .hero-facts{gap:14px 18px;}
    .hero-facts b{font-size:18px;}
  }
  @media (prefers-reduced-motion:reduce){
    *{transition-duration:.01ms !important;animation-duration:.01ms !important;}
    .card:hover,.rel-card:hover,.btn:hover,.nav-card:hover{transform:none;}
  }

/* roulang page: category2 */
:root{
    --brand:#14607A;
    --brand-deep:#0E4759;
    --brand-soft:#EEF4F7;
    --accent:#E8873A;
    --bg:#F6F8FA;
    --surface:#FFFFFF;
    --ink:#16232E;
    --ink-soft:#5B6B7A;
    --ink-mute:#8A98A5;
    --line:#E3E9EE;
    --line-soft:#EDF1F4;
    --ok:#2E8B6E;
    --warn:#C4553B;
    --r-card:16px;
    --r-panel:20px;
    --r-ctl:10px;
    --sh-1:0 1px 2px rgba(16,42,58,.06);
    --sh-2:0 8px 20px -10px rgba(16,42,58,.14);
    --sh-3:0 18px 40px -18px rgba(16,42,58,.22);
    --t:200ms ease-out;
    --font-sans:"PingFang SC","Microsoft YaHei","Hiragino Sans GB","Source Han Sans SC",system-ui,sans-serif;
  }
  *,*::before,*::after{box-sizing:border-box;}
  html{-webkit-text-size-adjust:100%;scroll-behavior:smooth;}
  body{
    margin:0;
    font-family:var(--font-sans);
    background:var(--bg);
    color:var(--ink);
    font-size:16px;
    line-height:1.78;
    -webkit-font-smoothing:antialiased;
  }
  img{max-width:100%;display:block;}
  a{color:var(--brand);text-decoration:none;text-underline-offset:4px;}
  a:hover{text-decoration:underline;}
  button{font-family:inherit;cursor:pointer;border:0;background:none;}
  ul,ol{margin:0;padding:0;list-style:none;}
  h1,h2,h3,h4,p{margin:0;}
  :focus-visible{outline:2px solid var(--brand);outline-offset:2px;border-radius:6px;}

  .container{
    width:100%;
    max-width:1200px;
    margin:0 auto;
    padding:0 32px;
  }

  /* ============ 顶部导航 ============ */
  .site-header{
    position:sticky;
    top:0;
    z-index:60;
    background:var(--surface);
    border-bottom:1px solid var(--line);
    transition:box-shadow var(--t);
  }
  .site-header.is-scrolled{box-shadow:var(--sh-2);}
  .nav-inner{
    min-height:72px;
    display:flex;
    align-items:center;
    gap:16px;
    padding:10px 0;
  }
  .nav-card-panel{
    flex:1 1 auto;
    display:flex;
    align-items:center;
    gap:14px;
    background:var(--surface);
    border:1px solid var(--line);
    border-radius:var(--r-card);
    box-shadow:var(--sh-1);
    padding:10px 14px;
  }
  .brand{
    display:flex;
    align-items:center;
    gap:10px;
    min-width:0;
  }
  .brand-mark{width:30px;height:30px;flex:0 0 auto;}
  .brand-text{
    display:flex;
    flex-direction:column;
    line-height:1.15;
    min-width:0;
  }
  .brand-text b{
    font-size:15px;
    font-weight:700;
    color:var(--brand-deep);
    white-space:nowrap;
  }
  .brand-text span{
    font-size:12px;
    color:var(--ink-mute);
    white-space:nowrap;
  }
  .nav-links{
    display:flex;
    align-items:center;
    gap:8px;
    margin-left:6px;
    flex:1 1 auto;
    min-width:0;
  }
  .nav-card{
    display:inline-flex;
    align-items:center;
    gap:7px;
    font-size:14px;
    font-weight:500;
    color:var(--ink-soft);
    background:transparent;
    border:1px solid transparent;
    border-radius:var(--r-ctl);
    padding:8px 12px;
    white-space:nowrap;
    transition:background var(--t),border-color var(--t),color var(--t),transform var(--t);
  }
  .nav-card svg{
    width:20px;height:20px;flex:0 0 auto;
    fill:none;stroke:currentColor;stroke-width:1.5;
    stroke-linecap:round;stroke-linejoin:round;
  }
  .nav-card:hover{
    background:var(--brand-soft);
    border-color:rgba(20,96,122,.2);
    color:var(--brand-deep);
    transform:translateY(-2px);
    text-decoration:none;
  }
  .nav-card.active{
    background:rgba(20,96,122,.08);
    color:var(--brand);
    box-shadow:inset 0 -2px 0 var(--brand);
  }
  .nav-cta{
    display:inline-flex;
    align-items:center;
    gap:8px;
    background:var(--brand);
    color:#fff;
    font-size:14px;
    font-weight:600;
    padding:11px 20px;
    border-radius:var(--r-ctl);
    white-space:nowrap;
    transition:background var(--t),transform var(--t),box-shadow var(--t);
  }
  .nav-cta:hover{background:var(--brand-deep);color:#fff;transform:translateY(-1px);box-shadow:var(--sh-2);text-decoration:none;}
  .nav-toggle{
    display:none;
    width:44px;height:44px;
    align-items:center;justify-content:center;
    border:1px solid var(--line);
    border-radius:var(--r-ctl);
    color:var(--brand-deep);
    background:var(--surface);
  }
  .nav-toggle svg{width:22px;height:22px;fill:none;stroke:currentColor;stroke-width:1.8;stroke-linecap:round;}

  .drawer{
    position:fixed;
    inset:0;
    background:#fff;
    z-index:80;
    display:none;
    flex-direction:column;
    padding:16px;
  }
  .drawer.open{display:flex;}
  .drawer-head{display:flex;align-items:center;justify-content:space-between;padding-bottom:14px;border-bottom:1px solid var(--line-soft);}
  .drawer-grid{
    display:grid;
    grid-template-columns:1fr 1fr;
    gap:12px;
    margin-top:18px;
  }
  .drawer-item{
    display:flex;
    flex-direction:column;
    gap:8px;
    border:1px solid var(--line);
    border-radius:var(--r-ctl);
    padding:14px 12px;
    color:var(--ink-soft);
    font-size:14px;
    font-weight:500;
    background:var(--surface);
  }
  .drawer-item svg{width:22px;height:22px;fill:none;stroke:var(--brand);stroke-width:1.5;stroke-linecap:round;stroke-linejoin:round;}
  .drawer-item.active{background:rgba(20,96,122,.08);color:var(--brand);border-color:rgba(20,96,122,.25);}
  .drawer-foot{margin-top:auto;padding-top:16px;}
  .drawer-foot .btn-primary{width:100%;justify-content:center;}

  /* ============ 按钮 ============ */
  .btn-primary{
    display:inline-flex;align-items:center;gap:8px;
    background:var(--brand);color:#fff;
    font-size:15px;font-weight:600;
    padding:12px 22px;border-radius:var(--r-ctl);
    transition:background var(--t),transform var(--t),box-shadow var(--t);
  }
  .btn-primary:hover{background:var(--brand-deep);color:#fff;transform:translateY(-1px);box-shadow:var(--sh-2);text-decoration:none;}
  .btn-ghost{
    display:inline-flex;align-items:center;gap:8px;
    background:#fff;color:var(--brand);
    border:1px solid rgba(20,96,122,.3);
    font-size:15px;font-weight:600;
    padding:12px 22px;border-radius:var(--r-ctl);
    transition:background var(--t),transform var(--t),border-color var(--t);
  }
  .btn-ghost:hover{background:rgba(20,96,122,.06);transform:translateY(-1px);text-decoration:none;border-color:rgba(20,96,122,.45);}
  .link-more{
    display:inline-flex;align-items:center;gap:6px;
    font-size:14px;font-weight:600;color:var(--brand);
    text-underline-offset:4px;
  }
  .link-more:hover{text-decoration:underline;}
  .btn-xs{
    display:inline-flex;align-items:center;gap:6px;
    font-size:12.5px;font-weight:600;
    padding:6px 12px;border-radius:999px;
    background:var(--brand-soft);color:var(--brand-deep);
    border:1px solid var(--line);
    transition:background var(--t),border-color var(--t);
  }
  .btn-xs:hover{background:#e3eef3;text-decoration:none;border-color:rgba(20,96,122,.25);}

  /* ============ 面包屑 ============ */
  .breadcrumb{
    display:flex;flex-wrap:wrap;align-items:center;gap:8px;
    font-size:12.5px;color:var(--ink-mute);
    padding:24px 0 0;
  }
  .breadcrumb a{color:var(--ink-soft);}
  .breadcrumb .sep{color:#c3ccd3;}
  .breadcrumb .current{color:var(--ink-soft);}

  /* ============ Hero（收窄） ============ */
  .hero{
    position:relative;
    overflow:hidden;
    padding:32px 0 0;
  }
  .hero-inner{
    display:grid;
    grid-template-columns:repeat(12,1fr);
    gap:24px;
    align-items:center;
    min-height:340px;
  }
  .hero-copy{grid-column:span 6;position:relative;z-index:2;}
  .hero-media{grid-column:span 6;}
  .hero-media .frame{
    border-radius:var(--r-panel);
    overflow:hidden;
    box-shadow:var(--sh-2);
    background:var(--brand-soft);
    aspect-ratio:16/10;
  }
  .hero-media img{width:100%;height:100%;object-fit:cover;object-position:center;}
  .eyebrow{
    display:inline-flex;align-items:center;gap:8px;
    font-size:12.5px;font-weight:600;
    color:var(--brand);
    background:rgba(20,96,122,.08);
    border-radius:999px;
    padding:6px 14px;
    margin-bottom:16px;
  }
  .hero h1{
    font-size:42px;
    font-weight:700;
    line-height:1.22;
    color:var(--ink);
    margin-bottom:14px;
  }
  .hero h1 em{font-style:normal;color:var(--brand);}
  .hero-lead{
    font-size:16px;
    line-height:1.78;
    color:var(--ink-soft);
    max-width:560px;
    margin-bottom:22px;
  }
  .hero-actions{display:flex;flex-wrap:wrap;gap:12px;}
  .hero-decor{
    position:absolute;
    right:-60px;top:-40px;
    width:420px;height:320px;
    opacity:.06;
    pointer-events:none;
  }

  /* ============ 区块通用 ============ */
  .section{padding:96px 0 0;}
  .section-head{max-width:720px;margin-bottom:36px;}
  .section-head h2{
    font-size:30px;font-weight:700;line-height:1.3;color:var(--ink);
    margin-bottom:12px;
  }
  .section-head p{font-size:16px;color:var(--ink-soft);}
  .divider{height:1px;background:var(--line-soft);border:0;margin:0;}

  /* ============ 卡片矩阵 2×3 ============ */
  .matrix{
    display:grid;
    grid-template-columns:repeat(3,1fr);
    gap:24px;
  }
  .matrix-card{
    background:var(--surface);
    border:1px solid var(--line);
    border-radius:var(--r-card);
    box-shadow:var(--sh-1);
    padding:24px;
    transition:transform var(--t),box-shadow var(--t),border-color var(--t);
  }
  .matrix-card:hover{transform:translateY(-3px);box-shadow:var(--sh-2);border-color:rgba(20,96,122,.22);}
  .matrix-icon{
    width:44px;height:44px;
    display:flex;align-items:center;justify-content:center;
    border-radius:12px;
    background:rgba(20,96,122,.08);
    margin-bottom:16px;
  }
  .matrix-icon svg{width:24px;height:24px;fill:none;stroke:var(--brand);stroke-width:1.6;stroke-linecap:round;stroke-linejoin:round;}
  .matrix-card h3{
    font-size:21px;font-weight:600;line-height:1.45;color:var(--ink);
    margin-bottom:10px;
  }
  .matrix-card p{font-size:14px;color:var(--ink-soft);line-height:1.75;}

  /* ============ 时间线 / 编号步骤 ============ */
  .timeline{
    position:relative;
    margin-top:8px;
    padding-left:0;
  }
  .timeline::before{
    content:"";
    position:absolute;
    left:19px;top:14px;bottom:14px;
    width:2px;
    background:linear-gradient(180deg,rgba(20,96,122,.35),rgba(20,96,122,.08));
    border-radius:2px;
  }
  .tl-item{
    position:relative;
    display:grid;
    grid-template-columns:40px 1fr;
    gap:20px;
    padding:0 0 28px;
  }
  .tl-item:last-child{padding-bottom:0;}
  .tl-node{
    position:relative;
    z-index:1;
    width:40px;height:40px;
    border-radius:999px;
    display:flex;align-items:center;justify-content:center;
    font-size:14px;font-weight:700;
    background:#fff;
    border:2px solid rgba(20,96,122,.3);
    color:var(--brand);
    transition:background var(--t),color var(--t),border-color var(--t);
  }
  .tl-item.current .tl-node{background:var(--brand);border-color:var(--brand);color:#fff;}
  .tl-body{
    background:var(--surface);
    border:1px solid var(--line);
    border-radius:var(--r-card);
    box-shadow:var(--sh-1);
    padding:20px 24px;
    transition:transform var(--t),box-shadow var(--t);
  }
  .tl-body:hover{transform:translateY(-3px);box-shadow:var(--sh-2);}
  .tl-body h3{font-size:19px;font-weight:600;line-height:1.45;color:var(--ink);margin-bottom:8px;}
  .tl-body p{font-size:15px;color:var(--ink-soft);}
  .tl-meta{
    display:inline-flex;align-items:center;gap:8px;
    font-size:12.5px;color:var(--ink-mute);
    margin-top:12px;
  }
  .chip{
    display:inline-flex;align-items:center;
    font-size:12.5px;font-weight:600;
    border-radius:999px;
    padding:3px 10px;
    background:var(--brand-soft);
    color:var(--brand-deep);
  }
  .chip-mute{background:#EEF1F4;color:var(--ink-soft);}

  /* ============ 数据条 ============ */
  .stat-bar{
    display:grid;
    grid-template-columns:repeat(3,1fr);
    gap:24px;
    background:var(--surface);
    border:1px solid var(--line);
    border-radius:var(--r-panel);
    box-shadow:var(--sh-1);
    padding:28px 32px;
  }
  .stat-cell{display:flex;flex-direction:column;gap:6px;}
  .stat-num{
    font-size:32px;font-weight:700;line-height:1.1;
    color:var(--brand);
  }
  .stat-num.alt{color:var(--accent);}
  .stat-label{font-size:12.5px;color:var(--ink-mute);}

  /* ============ 核对清单 ============ */
  .check-panel{
    background:var(--surface);
    border:1px solid var(--line);
    border-radius:var(--r-card);
    box-shadow:var(--sh-1);
    padding:28px;
  }
  .check-list li{
    display:flex;gap:12px;
    padding:14px 0;
    border-bottom:1px solid var(--line-soft);
    font-size:15px;color:var(--ink-soft);
  }
  .check-list li:last-child{border-bottom:0;padding-bottom:0;}
  .check-list li:first-child{padding-top:0;}
  .check-list svg{
    width:20px;height:20px;flex:0 0 auto;margin-top:3px;
    fill:none;stroke:var(--ok);stroke-width:1.8;stroke-linecap:round;stroke-linejoin:round;
  }

  /* ============ FAQ ============ */
  .faq-card{
    background:var(--surface);
    border:1px solid var(--line);
    border-radius:var(--r-card);
    box-shadow:var(--sh-1);
    overflow:hidden;
  }
  .faq-item{border-bottom:1px solid var(--line-soft);}
  .faq-item:last-child{border-bottom:0;}
  .faq-item summary{
    list-style:none;
    cursor:pointer;
    display:flex;align-items:center;justify-content:space-between;gap:16px;
    padding:20px 24px;
    font-size:16px;font-weight:600;color:var(--ink);
    transition:color var(--t),background var(--t);
  }
  .faq-item summary::-webkit-details-marker{display:none;}
  .faq-item summary:hover{color:var(--brand);background:#fafcfd;}
  .faq-sign{
    flex:0 0 auto;
    width:24px;height:24px;
    border-radius:999px;
    background:var(--brand-soft);
    color:var(--brand);
    display:flex;align-items:center;justify-content:center;
    font-size:16px;line-height:1;
    transition:transform var(--t),background var(--t),color var(--t);
  }
  .faq-item[open] .faq-sign{transform:rotate(45deg);background:rgba(232,135,58,.14);color:var(--accent);}
  .faq-answer{
    padding:0 24px 22px;
    font-size:15px;
    line-height:1.85;
    color:var(--ink-soft);
    max-width:720px;
  }

  /* ============ 相关分类 ============ */
  .rel-grid{
    display:grid;
    grid-template-columns:repeat(2,1fr);
    gap:24px;
  }
  .rel-card{
    display:block;
    background:var(--surface);
    border:1px solid var(--line);
    border-radius:var(--r-card);
    box-shadow:var(--sh-1);
    overflow:hidden;
    transition:transform var(--t),box-shadow var(--t);
  }
  .rel-card:hover{transform:translateY(-3px);box-shadow:var(--sh-2);text-decoration:none;}
  .rel-thumb{aspect-ratio:16/9;background:var(--brand-soft);overflow:hidden;}
  .rel-thumb img{width:100%;height:100%;object-fit:cover;object-position:center;}
  .rel-body{padding:24px;}
  .rel-body h3{font-size:19px;font-weight:600;color:var(--ink);margin-bottom:10px;transition:color var(--t);}
  .rel-card:hover .rel-body h3{color:var(--brand);}
  .rel-body p{font-size:14px;color:var(--ink-soft);margin-bottom:14px;}

  /* ============ 结尾 CTA ============ */
  .cta-card{
    position:relative;
    overflow:hidden;
    background:rgba(20,96,122,.06);
    border:1px solid rgba(20,96,122,.2);
    border-radius:var(--r-panel);
    padding:40px;
    display:flex;
    align-items:center;
    justify-content:space-between;
    gap:28px;
  }
  .cta-card h2{font-size:26px;font-weight:700;line-height:1.3;color:var(--brand-deep);margin-bottom:8px;}
  .cta-card p{font-size:15px;color:var(--ink-soft);max-width:640px;}
  .cta-decor{
    position:absolute;right:-30px;bottom:-40px;width:280px;height:200px;
    opacity:.06;pointer-events:none;
  }

  /* ============ 页脚 ============ */
  .site-footer{
    background:#0E2430;
    color:#C7D3DB;
    margin-top:96px;
    padding:64px 0 28px;
  }
  .footer-grid{
    display:grid;
    grid-template-columns:1.4fr 1fr 1fr 1fr;
    gap:32px;
  }
  .site-footer h4{
    color:#fff;font-size:15px;font-weight:600;margin-bottom:16px;
  }
  .footer-brand{display:flex;align-items:center;gap:10px;margin-bottom:14px;}
  .footer-brand b{color:#fff;font-size:15px;font-weight:700;}
  .site-footer p{color:#C7D3DB;}
  .site-footer a{color:#C7D3DB;font-size:14px;}
  .site-footer a:hover{color:#fff;text-decoration:underline;}
  .footer-list{display:flex;flex-direction:column;gap:10px;}
  .footer-bottom{
    display:flex;flex-wrap:wrap;justify-content:space-between;gap:12px;
    margin-top:40px;padding-top:22px;
    border-top:1px solid rgba(199,211,219,.18);
    font-size:12.5px;color:#8FA3AE;
  }
  .footer-text{font-size:14px;line-height:1.75;margin:0 0 16px;}
  .footer-icons{display:flex;gap:12px;}

  /* ============ 浮动 CTA ============ */
  .float-cta{
    position:fixed;
    right:24px;bottom:28px;
    z-index:50;
    display:inline-flex;align-items:center;gap:8px;
    background:var(--brand);color:#fff;
    font-size:15px;font-weight:600;
    padding:14px 22px;
    border-radius:999px;
    box-shadow:var(--sh-3);
    opacity:0;
    transform:translateY(12px);
    pointer-events:none;
    transition:opacity var(--t),transform var(--t),background var(--t);
  }
  .float-cta.show{opacity:1;transform:translateY(0);pointer-events:auto;}
  .float-cta:hover{background:var(--brand-deep);color:#fff;text-decoration:none;}
  .float-cta svg{width:18px;height:18px;fill:none;stroke:currentColor;stroke-width:1.7;stroke-linecap:round;stroke-linejoin:round;}
  .mobile-bar{display:none;}

  /* ============ 响应式 ============ */
  @media (max-width:1023px){
    .container{padding:0 24px;}
    .hero h1{font-size:34px;}
    .section-head h2{font-size:26px;}
    .matrix{grid-template-columns:repeat(2,1fr);}
    .footer-grid{grid-template-columns:1fr 1fr;gap:28px;}
    .section{padding-top:80px;}
    .hero-inner{min-height:0;padding-bottom:8px;}
    .hero-copy{grid-column:span 7;}
    .hero-media{grid-column:span 5;}
  }
  @media (max-width:900px){
    .nav-links{display:none;}
    .nav-toggle{display:inline-flex;}
    .nav-cta{display:none;}
    .nav-card-panel{padding:8px 12px;}
  }
  @media (max-width:767px){
    .container{padding:0 16px;}
    body{font-size:15.5px;}
    .site-header .nav-inner{min-height:60px;padding:8px 0;}
    .hero{padding-top:20px;}
    .hero-inner{grid-template-columns:1fr;gap:20px;}
    .hero-copy,.hero-media{grid-column:span 1;}
    .hero h1{font-size:28px;}
    .hero-lead{font-size:15.5px;}
    .hero-media{order:-1;}
    .hero-media .frame{aspect-ratio:16/9;}
    .section{padding-top:56px;}
    .section-head{margin-bottom:28px;}
    .section-head h2{font-size:23px;}
    .matrix{grid-template-columns:1fr;gap:16px;}
    .stat-bar{grid-template-columns:1fr;gap:20px;padding:22px;}
    .rel-grid{grid-template-columns:1fr;gap:16px;}
    .cta-card{flex-direction:column;align-items:flex-start;padding:28px 22px;gap:18px;}
    .cta-card h2{font-size:22px;}
    .footer-grid{grid-template-columns:1fr 1fr;gap:22px;}
    .tl-item{grid-template-columns:32px 1fr;gap:14px;}
    .tl-node{width:32px;height:32px;font-size:13px;}
    .timeline::before{left:15px;}
    .tl-body{padding:18px;}
    .faq-item summary{padding:16px 18px;font-size:15px;}
    .faq-answer{padding:0 18px 18px;font-size:14.5px;}
    .float-cta{display:none;}
    .mobile-bar{
      display:flex;
      align-items:center;
      justify-content:space-between;
      gap:12px;
      position:fixed;
      left:0;right:0;bottom:0;
      z-index:50;
      background:#fff;
      border-top:1px solid var(--line);
      padding:10px 16px calc(10px + env(safe-area-inset-bottom,0px));
      box-shadow:0 -6px 18px -12px rgba(16,42,58,.28);
    }
    .mobile-bar .btn-primary{padding:10px 18px;font-size:14px;}
    .mobile-bar .hint{font-size:12.5px;color:var(--ink-mute);text-decoration:underline;text-underline-offset:4px;}
    .site-footer{padding-bottom:88px;margin-top:56px;}
  }
  @media (max-width:520px){
    .hero h1{font-size:26px;}
    .footer-grid{grid-template-columns:1fr;}
    .drawer-grid{grid-template-columns:1fr 1fr;}
  }
  @media (prefers-reduced-motion:reduce){
    *{transition-duration:1ms !important;animation-duration:1ms !important;}
    .matrix-card:hover,.tl-body:hover,.rel-card:hover,.nav-card:hover,.btn-primary:hover,.btn-ghost:hover{transform:none !important;}
  }