/* roulang page: index */
:root{
  --brand-700:#1E4E8C;
  --brand-900:#143A6B;
  --brand-500:#2F7FD1;
  --brand-100:#E8F0FA;
  --accent:#F2A03D;
  --bg:#F6F8FB;
  --surface:#FFFFFF;
  --line:#E3E9F2;
  --ink:#16233A;
  --ink-soft:#5A6B85;
  --radius-card:14px;
  --radius-img:12px;
  --radius-btn:10px;
  --radius-block:20px;
  --shadow-card:0 1px 2px rgba(22,35,58,.05), 0 10px 24px -12px rgba(22,35,58,.18);
  --shadow-hover:0 2px 4px rgba(22,35,58,.06), 0 18px 36px -16px rgba(22,35,58,.24);
}
*,*::before,*::after{box-sizing:border-box}
html{-webkit-text-size-adjust:100%}
body{
  margin:0;
  font-family:-apple-system,BlinkMacSystemFont,"PingFang SC","Microsoft YaHei","Noto Sans SC",sans-serif;
  font-size:16px;
  line-height:1.8;
  color:var(--ink);
  background:var(--bg);
  -webkit-font-smoothing:antialiased;
}
img{max-width:100%;display:block}
a{color:inherit;text-decoration:none}
button{font-family:inherit;cursor:pointer}
h1,h2,h3,h4{margin:0;color:var(--brand-900);letter-spacing:-.5px}
p{margin:0}
ul,ol{margin:0;padding:0;list-style:none}
.container{width:100%;max-width:1200px;margin:0 auto;padding-left:24px;padding-right:24px}
.num{font-variant-numeric:tabular-nums}

/* ===== header ===== */
.site-header{
  position:sticky;top:0;z-index:60;
  background:rgba(255,255,255,.96);
  border-bottom:1px solid var(--line);
  transition:box-shadow .25s ease,background .25s ease;
}
.site-header.is-scrolled{box-shadow:0 6px 20px -12px rgba(22,35,58,.28)}
.nav-inner{display:flex;align-items:center;gap:28px;height:72px}
.brand{display:flex;flex-direction:column;justify-content:center;line-height:1.15;flex-shrink:0}
.brand-main{font-size:20px;font-weight:800;color:var(--brand-900);letter-spacing:-.4px}
.brand-sub{font-size:12px;color:var(--ink-soft);font-weight:500;letter-spacing:.4px}
.nav-links{display:flex;align-items:center;gap:8px;margin-left:auto}
.nav-link{
  position:relative;display:inline-flex;align-items:center;
  padding:8px 12px;border-radius:999px;
  font-size:15px;color:var(--ink);font-weight:500;
  transition:color .2s ease,background .2s ease,border-color .2s ease;
  border:1px solid transparent;white-space:nowrap;
}
.nav-link::after{
  content:"";position:absolute;left:12px;right:12px;bottom:2px;height:2px;
  background:var(--accent);border-radius:2px;transform:scaleX(0);transform-origin:left;
  transition:transform .22s ease;
}
.nav-link:hover{color:var(--brand-700)}
.nav-link:hover::after{transform:scaleX(1)}
.nav-link.active{color:var(--brand-700);font-weight:700}
.nav-link.active::after{transform:scaleX(1)}
.nav-pill{
  border:1px solid #C8D6E8;color:var(--brand-700);background:#fff;
}
.nav-pill:hover{background:var(--brand-100);border-color:var(--brand-500)}
.nav-pill::after{display:none}
.nav-actions{display:flex;align-items:center;gap:10px;flex-shrink:0}
.btn{
  display:inline-flex;align-items:center;justify-content:center;gap:8px;
  min-height:44px;padding:0 20px;border-radius:var(--radius-btn);
  font-size:15px;font-weight:600;border:1px solid transparent;
  transition:transform .18s ease,box-shadow .2s ease,background .2s ease,border-color .2s ease,color .2s ease;
  white-space:nowrap;
}
.btn-primary{background:var(--brand-700);color:#fff;box-shadow:0 6px 16px -10px rgba(30,78,140,.85)}
.btn-primary:hover{background:#17407A;transform:translateY(-1px);box-shadow:0 12px 22px -12px rgba(30,78,140,.9)}
.btn-primary:active{transform:translateY(0)}
.btn-ghost{background:#fff;color:var(--brand-700);border-color:#C8D6E8}
.btn-ghost:hover{background:var(--brand-100);border-color:var(--brand-500);transform:translateY(-1px)}
.btn-ghost:active{transform:translateY(0)}
.btn:focus-visible,a:focus-visible,summary:focus-visible,button:focus-visible,input:focus-visible{
  outline:2px solid var(--accent);outline-offset:2px;
}
.textlink{display:inline-flex;align-items:center;gap:6px;color:var(--brand-700);font-weight:600;font-size:15px}
.textlink i{transition:transform .2s ease}
.textlink:hover i{transform:translateX(3px)}
.burger{
  display:none;width:44px;height:44px;border:1px solid var(--line);background:#fff;
  border-radius:10px;color:var(--brand-900);font-size:18px;align-items:center;justify-content:center;
}
.mobile-nav{display:none;border-top:1px solid var(--line);background:#fff}
.mobile-nav.open{display:block}
.mobile-nav-inner{padding:14px 24px 20px;display:flex;flex-direction:column;gap:6px}
.mobile-nav-inner .nav-link{border:1px solid var(--line);border-radius:10px;padding:12px 14px}
.mobile-nav-inner .nav-link::after{display:none}
.mobile-nav-inner .btn{width:100%;margin-top:6px}

/* ===== hero ===== */
.hero{
  position:relative;overflow:hidden;
  background:
    radial-gradient(circle at 12% 18%, rgba(47,127,209,.10), transparent 42%),
    radial-gradient(circle at 88% 8%, rgba(242,160,61,.10), transparent 40%),
    linear-gradient(180deg,#FFFFFF 0%,#F6F8FB 100%);
  border-bottom:1px solid var(--line);
}
.hero::after{
  content:"";position:absolute;inset:0;pointer-events:none;
  background-image:radial-gradient(rgba(30,78,140,.16) 1px, transparent 1px);
  background-size:26px 26px;opacity:.28;
  -webkit-mask-image:linear-gradient(180deg,#000 0%,transparent 78%);
  mask-image:linear-gradient(180deg,#000 0%,transparent 78%);
}
.hero-inner{position:relative;z-index:2;display:grid;grid-template-columns:6fr 4fr;gap:48px;align-items:center;padding-top:72px;padding-bottom:80px}
.hero-eyebrow{
  display:inline-flex;align-items:center;gap:8px;
  background:var(--brand-100);color:var(--brand-700);
  font-size:12.5px;font-weight:600;padding:6px 14px;border-radius:999px;margin-bottom:20px;
}
.hero-eyebrow .dot{width:6px;height:6px;border-radius:50%;background:var(--accent)}
.hero h1{font-size:42px;line-height:1.25;font-weight:800;margin-bottom:18px}
.hero h1 span{color:var(--brand-700)}
.hero-sub{font-size:16px;color:var(--ink-soft);max-width:560px;margin-bottom:28px;line-height:1.85}
.hero-btns{display:flex;flex-wrap:wrap;gap:12px;margin-bottom:34px}
.hero-stats{display:flex;flex-wrap:wrap;gap:36px;padding-top:22px;border-top:1px solid var(--line)}
.stat-item{min-width:96px}
.stat-num{font-size:24px;font-weight:800;color:var(--brand-900);line-height:1.2}
.stat-label{font-size:13px;color:var(--ink-soft);margin-top:2px}
.hero-visual{position:relative}
.hero-img{
  width:100%;aspect-ratio:4/3;object-fit:cover;border-radius:var(--radius-block);
  box-shadow:var(--shadow-card);border:1px solid rgba(255,255,255,.7);
}
.hero-float{
  position:absolute;left:-18px;bottom:-22px;width:min(300px,88%);
  background:#fff;border:1px solid var(--line);border-radius:var(--radius-card);
  box-shadow:var(--shadow-hover);padding:16px 18px;
}
.hero-float .hf-title{font-size:14px;font-weight:700;color:var(--brand-900);display:flex;align-items:center;gap:8px}
.hero-float .hf-title i{color:var(--accent)}
.hero-float .hf-text{font-size:13px;color:var(--ink-soft);line-height:1.7;margin-top:6px}

/* ===== section base ===== */
.section{padding-top:88px;padding-bottom:88px}
.section-tight{padding-top:64px;padding-bottom:64px}
.section-head{display:flex;align-items:flex-end;justify-content:space-between;gap:24px;margin-bottom:36px}
.section-head h2{font-size:30px;line-height:1.35;font-weight:800}
.section-head .sub{font-size:15px;color:var(--ink-soft);margin-top:8px}
.sec-eyebrow{font-size:12.5px;font-weight:700;color:var(--brand-500);letter-spacing:1.4px;text-transform:uppercase;margin-bottom:10px}

/* ===== directory ===== */
.dir-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:24px}
.dir-card{
  display:flex;align-items:flex-start;gap:14px;padding:24px;
  background:var(--surface);border:1px solid var(--line);border-radius:var(--radius-card);
  box-shadow:var(--shadow-card);transition:transform .2s ease,box-shadow .2s ease,border-color .2s ease;
}
.dir-card:hover{transform:translateY(-2px);box-shadow:var(--shadow-hover);border-color:#CBDCEE}
.dir-no{font-size:15px;font-weight:800;color:var(--accent);line-height:1.5;flex-shrink:0;width:26px}
.dir-body{flex:1}
.dir-title{font-size:17px;font-weight:700;color:var(--brand-900);margin-bottom:6px}
.dir-desc{font-size:14px;color:var(--ink-soft);line-height:1.7}
.dir-arrow{color:var(--brand-500);font-size:14px;margin-top:4px;transition:transform .2s ease}
.dir-card:hover .dir-arrow{transform:translateX(3px)}

/* ===== cards ===== */
.card-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:24px}
.card{
  display:flex;flex-direction:column;background:var(--surface);
  border:1px solid var(--line);border-radius:var(--radius-card);
  overflow:hidden;box-shadow:var(--shadow-card);
  transition:transform .2s ease,box-shadow .2s ease;
}
.card:hover{transform:translateY(-2px);box-shadow:var(--shadow-hover)}
.card:hover .card-title{color:var(--brand-700)}
.card-thumb{aspect-ratio:16/9;overflow:hidden;background:var(--brand-100);position:relative}
.card-thumb img{width:100%;height:100%;object-fit:cover;transition:transform .4s ease}
.card:hover .card-thumb img{transform:scale(1.03)}
.card-body{padding:20px 22px 22px;display:flex;flex-direction:column;flex:1}
.badge{
  display:inline-flex;align-items:center;gap:6px;align-self:flex-start;
  background:var(--brand-100);color:var(--brand-700);
  font-size:12.5px;font-weight:600;padding:4px 11px;border-radius:999px;margin-bottom:12px;
}
.badge-dot::before{content:"";width:6px;height:6px;border-radius:50%;background:var(--accent)}
.card-title{
  font-size:17px;font-weight:700;color:var(--brand-900);line-height:1.55;margin-bottom:8px;
  display:-webkit-box;-webkit-line-clamp:2;-webkit-box-orient:vertical;overflow:hidden;transition:color .2s ease;
}
.card-text{
  font-size:14px;color:var(--ink-soft);line-height:1.75;margin-bottom:14px;
  display:-webkit-box;-webkit-line-clamp:2;-webkit-box-orient:vertical;overflow:hidden;
}
.card-meta{display:flex;align-items:center;gap:10px;font-size:12.5px;color:var(--ink-soft);margin-top:auto;padding-top:12px;border-top:1px solid var(--line)}
.card-meta .sep{color:#C3CEDE}
.empty-state{
  min-height:240px;display:flex;flex-direction:column;align-items:center;justify-content:center;
  gap:12px;background:var(--surface);border:1px dashed #C9D7E7;border-radius:var(--radius-card);
  color:var(--ink-soft);font-size:15px;grid-column:1/-1;padding:32px;
}
.empty-state i{font-size:26px;color:var(--brand-500)}

/* ===== featured ===== */
.featured{display:grid;grid-template-columns:8fr 4fr;gap:24px}
.feat-main{
  display:flex;flex-direction:column;background:var(--surface);border:1px solid var(--line);
  border-radius:var(--radius-card);overflow:hidden;box-shadow:var(--shadow-card);
  transition:transform .2s ease,box-shadow .2s ease;
}
.feat-main:hover{transform:translateY(-2px);box-shadow:var(--shadow-hover)}
.feat-main .thumb{aspect-ratio:16/10;overflow:hidden;background:var(--brand-100)}
.feat-main .thumb img{width:100%;height:100%;object-fit:cover}
.feat-main .body{padding:26px 28px 28px}
.feat-main h3{font-size:22px;line-height:1.5;margin-bottom:12px;font-weight:800}
.feat-main p{font-size:15px;color:var(--ink-soft);line-height:1.8}
.feat-side{display:flex;flex-direction:column;gap:24px}
.mini-card{
  display:flex;gap:14px;padding:18px;background:var(--surface);
  border:1px solid var(--line);border-radius:var(--radius-card);box-shadow:var(--shadow-card);
  transition:transform .2s ease,box-shadow .2s ease;flex:1;
}
.mini-card:hover{transform:translateY(-2px);box-shadow:var(--shadow-hover)}
.mini-card .thumb{
  width:96px;flex-shrink:0;aspect-ratio:1/1;border-radius:var(--radius-img);
  overflow:hidden;background:var(--brand-100);
}
.mini-card .thumb img{width:100%;height:100%;object-fit:cover}
.mini-card h4{font-size:15.5px;font-weight:700;color:var(--brand-900);line-height:1.5;margin-bottom:6px}
.mini-card p{font-size:13px;color:var(--ink-soft);line-height:1.65;display:-webkit-box;-webkit-line-clamp:2;-webkit-box-orient:vertical;overflow:hidden}

/* ===== wide cover ===== */
.cover-hero{
  position:relative;border-radius:var(--radius-block);overflow:hidden;
  border:1px solid var(--line);box-shadow:var(--shadow-card);
}
.cover-hero img{width:100%;height:340px;object-fit:cover}
.cover-hero .overlay{
  position:absolute;inset:0;display:flex;flex-direction:column;justify-content:flex-end;
  padding:32px;background:linear-gradient(180deg,rgba(20,58,107,.10) 0%,rgba(20,58,107,.82) 100%);
}
.cover-hero .overlay h3{color:#fff;font-size:26px;font-weight:800;line-height:1.4;margin-bottom:8px}
.cover-hero .overlay p{color:rgba(255,255,255,.86);font-size:14.5px;line-height:1.75;max-width:640px}
.two-col-list{display:grid;grid-template-columns:repeat(2,1fr);gap:24px;margin-top:24px}
.info-row{
  display:flex;gap:16px;padding:20px;background:var(--surface);
  border:1px solid var(--line);border-radius:var(--radius-card);box-shadow:var(--shadow-card);
  transition:transform .2s ease,box-shadow .2s ease;
}
.info-row:hover{transform:translateY(-2px);box-shadow:var(--shadow-hover)}
.info-row .thumb{width:140px;flex-shrink:0;aspect-ratio:4/3;border-radius:var(--radius-img);overflow:hidden;background:var(--brand-100)}
.info-row .thumb img{width:100%;height:100%;object-fit:cover}
.info-row h4{font-size:16px;font-weight:700;color:var(--brand-900);margin-bottom:6px;line-height:1.5}
.info-row p{font-size:13.5px;color:var(--ink-soft);line-height:1.7}

/* ===== recommend scroll ===== */
.tag-row{display:flex;flex-wrap:wrap;gap:10px;margin-bottom:26px}
.tag{
  display:inline-flex;align-items:center;padding:7px 15px;border-radius:999px;
  border:1px solid #C8D6E8;background:#fff;color:var(--brand-700);
  font-size:13px;font-weight:500;transition:background .2s ease,border-color .2s ease,transform .2s ease;
}
.tag:hover{background:var(--brand-100);border-color:var(--brand-500);transform:translateY(-1px)}
.scroll-wrap{position:relative}
.scroll-wrap::after{
  content:"";position:absolute;top:0;right:0;bottom:8px;width:72px;pointer-events:none;
  background:linear-gradient(90deg,rgba(246,248,251,0),rgba(246,248,251,.96));
}
.scroll-track{
  display:flex;gap:20px;overflow-x:auto;padding-bottom:12px;
  scrollbar-width:none;-ms-overflow-style:none;
}
.scroll-track::-webkit-scrollbar{display:none}
.scroll-card{
  flex:0 0 290px;background:var(--surface);border:1px solid var(--line);
  border-radius:var(--radius-card);padding:20px;box-shadow:var(--shadow-card);
  transition:transform .2s ease,box-shadow .2s ease;
}
.scroll-card:hover{transform:translateY(-2px);box-shadow:var(--shadow-hover)}
.scroll-card h4{font-size:15.5px;font-weight:700;color:var(--brand-900);line-height:1.5;margin-bottom:8px}
.scroll-card p{font-size:13.5px;color:var(--ink-soft);line-height:1.7}

/* ===== cta band ===== */
.cta-band{
  display:flex;align-items:center;justify-content:space-between;gap:28px;flex-wrap:wrap;
  background:var(--brand-100);border-radius:var(--radius-block);padding:34px 36px;
  border:1px solid #D5E3F4;
}
.cta-band h3{font-size:23px;font-weight:800;color:var(--brand-900);margin-bottom:8px}
.cta-band p{font-size:14.5px;color:var(--ink-soft);line-height:1.75}
.cta-actions{display:flex;flex-wrap:wrap;gap:12px}

/* ===== faq ===== */
.faq-grid{display:grid;grid-template-columns:repeat(2,1fr);gap:16px}
.faq-item{
  background:var(--surface);border:1px solid var(--line);border-radius:var(--radius-card);
  overflow:hidden;transition:border-color .2s ease,background .2s ease;
}
.faq-item summary{
  list-style:none;cursor:pointer;display:flex;align-items:center;justify-content:space-between;gap:16px;
  padding:20px 22px;font-size:16px;font-weight:600;color:var(--brand-900);min-height:64px;
}
.faq-item summary::-webkit-details-marker{display:none}
.faq-item summary i{color:var(--brand-500);font-size:13px;transition:transform .2s ease;flex-shrink:0}
.faq-item[open]{border-left:3px solid var(--accent);background:#FBFCFE}
.faq-item[open] summary i{transform:rotate(180deg)}
.faq-answer{padding:0 22px 20px;font-size:15px;color:var(--ink-soft);line-height:1.8}

/* ===== footer ===== */
.site-footer{background:var(--brand-900);color:rgba(255,255,255,.78);margin-top:0}
.footer-top{display:grid;grid-template-columns:2fr 1fr 1fr 1.4fr;gap:40px;padding-top:64px;padding-bottom:44px}
.footer-brand .fb-logo{font-size:20px;font-weight:800;color:#fff;margin-bottom:12px;letter-spacing:-.4px}
.footer-brand p{font-size:13.5px;line-height:1.8;color:rgba(255,255,255,.66);max-width:300px}
.footer-col h4{font-size:14px;font-weight:700;color:#fff;margin-bottom:16px}
.footer-col ul{display:flex;flex-direction:column;gap:10px}
.footer-col a{font-size:13.5px;color:rgba(255,255,255,.7);transition:color .2s ease}
.footer-col a:hover{color:var(--accent)}
.footer-contact li{font-size:13.5px;color:rgba(255,255,255,.7);display:flex;gap:8px;align-items:flex-start;line-height:1.7}
.footer-contact i{color:var(--accent);margin-top:4px;font-size:12px}
.footer-bottom{
  border-top:1px solid rgba(255,255,255,.12);padding-top:20px;padding-bottom:24px;
  display:flex;align-items:center;justify-content:space-between;gap:16px;flex-wrap:wrap;
  font-size:12.5px;color:rgba(255,255,255,.55);
}

/* ===== responsive ===== */
@media (max-width:1024px){
  .nav-links{display:none}
  .nav-pill{display:none}
  .burger{display:inline-flex}
  .nav-actions .btn-ghost{display:none}
  .hero-inner{grid-template-columns:1fr;gap:44px;padding-top:56px;padding-bottom:64px}
  .hero h1{font-size:34px}
  .hero-float{position:static;width:100%;margin-top:16px}
  .hero-visual{padding-bottom:0}
  .featured{grid-template-columns:1fr}
  .feat-side{flex-direction:row;flex-wrap:wrap}
  .mini-card{flex:1 1 300px}
  .footer-top{grid-template-columns:1fr 1fr;gap:32px}
  .dir-grid,.card-grid{grid-template-columns:repeat(2,1fr)}
  .two-col-list{grid-template-columns:1fr}
  .section{padding-top:64px;padding-bottom:64px}
}
@media (max-width:768px){
  .container{padding-left:20px;padding-right:20px}
  .hero h1{font-size:30px}
  .section-head{flex-direction:column;align-items:flex-start;gap:12px}
  .section-head h2{font-size:24px}
  .faq-grid{grid-template-columns:1fr}
  .cta-band{padding:26px 22px;flex-direction:column;align-items:flex-start}
  .cover-hero img{height:260px}
  .cover-hero .overlay{padding:22px}
  .cover-hero .overlay h3{font-size:21px}
  .info-row .thumb{width:112px}
  .footer-top{grid-template-columns:1fr;gap:28px;padding-top:48px}
  .feat-main .body{padding:20px}
}
@media (max-width:520px){
  .nav-inner{height:64px;gap:14px}
  .brand-main{font-size:17px}
  .brand-sub{font-size:11px}
  .nav-actions .btn-primary{padding:0 14px;font-size:14px}
  .dir-grid,.card-grid{grid-template-columns:1fr}
  .hero-stats{gap:22px}
  .stat-item{min-width:84px}
  .mini-card{flex:1 1 100%}
  .info-row{flex-direction:column}
  .info-row .thumb{width:100%;aspect-ratio:16/9}
  .scroll-card{flex:0 0 250px}
  .cta-actions .btn{width:100%}
  .hero-btns .btn{width:100%}
}

/* roulang page: category1 */
:root{
    --brand-900:#143A6B;
    --brand-700:#1E4E8C;
    --brand-700-hover:#17407A;
    --brand-500:#2F7FD1;
    --brand-100:#E8F0FA;
    --accent:#F2A03D;
    --bg:#F6F8FB;
    --surface:#FFFFFF;
    --line:#E3E9F2;
    --ink:#16233A;
    --ink-soft:#5A6B85;
    --radius-card:14px;
    --radius-img:12px;
    --radius-btn:10px;
    --shadow-card:0 1px 2px rgba(22,35,58,.05), 0 10px 24px -12px rgba(22,35,58,.18);
    --shadow-card-hover:0 2px 4px rgba(22,35,58,.06), 0 18px 36px -16px rgba(22,35,58,.24);
  }
  *,*::before,*::after{box-sizing:border-box;}
  html{scroll-behavior:smooth;}
  body{
    margin:0;
    font-family:-apple-system, BlinkMacSystemFont, "PingFang SC", "Microsoft YaHei", "Noto Sans SC", sans-serif;
    background:var(--bg);
    color:var(--ink);
    font-size:16px;
    line-height:1.8;
    -webkit-font-smoothing:antialiased;
    text-rendering:optimizeLegibility;
  }
  h1,h2,h3,h4,p,ul,ol,figure{margin:0;}
  ul,ol{padding:0;list-style:none;}
  a{color:var(--brand-500);text-decoration:none;transition:color .2s ease, background-color .2s ease, border-color .2s ease;}
  img{display:block;max-width:100%;}
  button{font-family:inherit;}
  .num{font-variant-numeric:tabular-nums;}

  .container{
    width:100%;
    max-width:1200px;
    margin:0 auto;
    padding:0 24px;
  }
  .section{padding:88px 0;}
  .section-tight{padding:64px 0;}

  /* ---------- Header ---------- */
  .site-header{
    position:sticky;
    top:0;
    z-index:60;
    background:rgba(255,255,255,.96);
    border-bottom:1px solid var(--line);
    transition:box-shadow .25s ease;
  }
  .site-header.is-scrolled{
    box-shadow:0 6px 20px -12px rgba(22,35,58,.28);
  }
  .header-inner{
    display:flex;
    align-items:center;
    gap:20px;
    height:72px;
  }
  .brand{
    display:flex;
    align-items:center;
    gap:12px;
    flex-shrink:0;
  }
  .brand-mark{
    width:40px;height:40px;
    border-radius:12px;
    background:linear-gradient(150deg, var(--brand-700), var(--brand-500));
    color:#fff;
    display:flex;align-items:center;justify-content:center;
    font-size:19px;font-weight:800;
    letter-spacing:-.5px;
    box-shadow:0 6px 14px -8px rgba(30,78,140,.9);
  }
  .brand-text strong{
    display:block;
    font-size:18px;
    font-weight:800;
    letter-spacing:-.5px;
    color:var(--brand-900);
    line-height:1.25;
  }
  .brand-text small{
    display:block;
    font-size:12px;
    color:var(--ink-soft);
    line-height:1.4;
  }
  .nav-links{
    display:flex;
    align-items:center;
    gap:6px;
    margin-left:auto;
  }
  .nav-link{
    display:inline-flex;
    align-items:center;
    padding:8px 15px;
    border-radius:999px;
    font-size:15px;
    font-weight:500;
    color:var(--ink-soft);
    border:1px solid transparent;
    white-space:nowrap;
  }
  .nav-link:hover{
    color:var(--brand-700);
    background:var(--brand-100);
  }
  .nav-link.active{
    color:var(--brand-700);
    background:var(--brand-100);
    font-weight:700;
  }
  .nav-pill{
    border:1px solid #C8D6E8;
    color:var(--brand-700);
    background:#fff;
  }
  .nav-pill:hover{
    border-color:var(--brand-500);
    background:var(--brand-100);
  }
  .nav-pill.active{
    background:var(--brand-700);
    border-color:var(--brand-700);
    color:#fff;
  }
  .nav-pill.active:hover{
    background:var(--brand-700-hover);
    color:#fff;
  }
  .header-actions{
    display:flex;
    align-items:center;
    gap:10px;
    flex-shrink:0;
  }
  .btn{
    display:inline-flex;
    align-items:center;
    justify-content:center;
    gap:8px;
    min-height:44px;
    padding:11px 20px;
    border-radius:var(--radius-btn);
    font-size:15px;
    font-weight:600;
    border:1px solid transparent;
    cursor:pointer;
    transition:transform .18s ease, box-shadow .18s ease, background-color .18s ease, border-color .18s ease, color .18s ease;
    white-space:nowrap;
  }
  .btn:focus-visible{
    outline:2px solid var(--accent);
    outline-offset:2px;
  }
  .btn-primary{
    background:var(--brand-700);
    color:#fff;
    box-shadow:0 8px 18px -12px rgba(30,78,140,.95);
  }
  .btn-primary:hover{
    background:var(--brand-700-hover);
    transform:translateY(-1px);
    box-shadow:0 14px 24px -14px rgba(30,78,140,.9);
  }
  .btn-primary:active{transform:translateY(0);}
  .btn-ghost{
    background:#fff;
    color:var(--brand-700);
    border-color:#C8D6E8;
  }
  .btn-ghost:hover{
    background:var(--brand-100);
    border-color:var(--brand-500);
    transform:translateY(-1px);
  }
  .btn-ghost:active{transform:translateY(0);}
  .btn-link{
    display:inline-flex;
    align-items:center;
    gap:6px;
    color:var(--brand-700);
    font-weight:600;
    font-size:15px;
    padding:4px 0;
  }
  .btn-link i{transition:transform .2s ease;}
  .btn-link:hover{color:var(--brand-500);}
  .btn-link:hover i{transform:translateX(3px);}
  .btn-link:focus-visible{outline:2px solid var(--accent);outline-offset:3px;border-radius:4px;}

  .nav-toggle{
    display:none;
    width:44px;height:44px;
    border-radius:10px;
    border:1px solid var(--line);
    background:#fff;
    color:var(--brand-700);
    align-items:center;
    justify-content:center;
    font-size:17px;
    cursor:pointer;
  }
  .nav-toggle:focus-visible{outline:2px solid var(--accent);outline-offset:2px;}

  .mobile-panel{
    display:none;
    border-top:1px solid var(--line);
    background:#fff;
    padding:14px 0 20px;
  }
  .mobile-panel.open{display:block;}
  .mobile-panel .nav-link{
    display:block;
    width:100%;
    padding:12px 16px;
    border-radius:10px;
    margin-bottom:6px;
    border:1px solid transparent;
  }
  .mobile-panel .nav-pill{border-color:#C8D6E8;}
  .mobile-panel .panel-actions{
    display:flex;
    flex-direction:column;
    gap:10px;
    margin-top:12px;
  }

  /* ---------- Page head ---------- */
  .page-head{
    position:relative;
    overflow:hidden;
    background-color:var(--brand-900);
    background-image:linear-gradient(115deg, rgba(20,58,107,.94) 0%, rgba(30,78,140,.86) 52%, rgba(47,127,209,.72) 100%), url('/assets/images/backpic/back-1.png');
    background-size:cover;
    background-position:center;
    color:#fff;
    padding:56px 0 64px;
  }
  .page-head::after{
    content:"";
    position:absolute;
    inset:0;
    background-image:radial-gradient(rgba(255,255,255,.35) 1px, transparent 1px);
    background-size:26px 26px;
    opacity:.10;
    pointer-events:none;
  }
  .page-head .container{position:relative;z-index:2;}
  .breadcrumb{
    display:flex;
    align-items:center;
    gap:8px;
    font-size:13px;
    color:rgba(255,255,255,.72);
    margin-bottom:22px;
    flex-wrap:wrap;
  }
  .breadcrumb a{color:rgba(255,255,255,.85);}
  .breadcrumb a:hover{color:#fff;text-decoration:underline;}
  .breadcrumb .sep{opacity:.55;}
  .breadcrumb .current{color:#fff;font-weight:600;}

  .head-grid{
    display:grid;
    grid-template-columns:1.55fr 1fr;
    gap:44px;
    align-items:start;
  }
  .head-kicker{
    display:inline-flex;
    align-items:center;
    gap:8px;
    font-size:13px;
    font-weight:600;
    letter-spacing:.4px;
    padding:6px 14px;
    border-radius:999px;
    background:rgba(255,255,255,.14);
    border:1px solid rgba(255,255,255,.28);
    color:#fff;
    margin-bottom:18px;
  }
  .head-kicker .dot{
    width:6px;height:6px;border-radius:50%;
    background:var(--accent);
  }
  .page-head h1{
    font-size:42px;
    line-height:1.25;
    font-weight:800;
    letter-spacing:-.5px;
    margin-bottom:16px;
  }
  .page-head h1 span{color:#FFD79A;}
  .head-desc{
    font-size:16.5px;
    line-height:1.8;
    color:rgba(255,255,255,.86);
    max-width:620px;
  }
  .head-actions{
    display:flex;
    flex-wrap:wrap;
    gap:12px;
    margin-top:28px;
  }
  .btn-on-dark{
    background:#fff;
    color:var(--brand-700);
    border-color:#fff;
  }
  .btn-on-dark:hover{
    background:#EAF2FC;
    color:var(--brand-700);
    transform:translateY(-1px);
    box-shadow:0 14px 26px -16px rgba(0,0,0,.6);
  }
  .btn-outline-dark{
    background:rgba(255,255,255,.08);
    color:#fff;
    border-color:rgba(255,255,255,.55);
  }
  .btn-outline-dark:hover{
    background:rgba(255,255,255,.18);
    border-color:#fff;
    transform:translateY(-1px);
  }

  .stat-block{
    background:rgba(255,255,255,.10);
    border:1px solid rgba(255,255,255,.26);
    border-radius:18px;
    padding:24px;
    backdrop-filter:blur(0px);
  }
  .stat-block h2{
    font-size:14px;
    font-weight:700;
    letter-spacing:.3px;
    color:rgba(255,255,255,.85);
    margin-bottom:16px;
    display:flex;
    align-items:center;
    gap:8px;
  }
  .stat-row{
    display:flex;
    align-items:flex-start;
    justify-content:space-between;
    gap:14px;
    padding:13px 0;
    border-top:1px solid rgba(255,255,255,.16);
  }
  .stat-row:first-of-type{border-top:0;padding-top:0;}
  .stat-row .label{
    font-size:14px;
    color:rgba(255,255,255,.78);
    line-height:1.6;
  }
  .stat-row .value{
    font-size:22px;
    font-weight:800;
    letter-spacing:-.5px;
    color:#fff;
    line-height:1.3;
    white-space:nowrap;
  }
  .stat-row .value small{
    font-size:12px;
    font-weight:600;
    color:rgba(255,255,255,.7);
    margin-left:3px;
  }

  /* ---------- Category tabs ---------- */
  .tabs-wrap{
    position:relative;
    z-index:3;
    margin-top:-28px;
    display:flex;
    flex-wrap:wrap;
    gap:10px;
  }
  .cat-tab{
    display:inline-flex;
    align-items:center;
    gap:8px;
    padding:11px 22px;
    border-radius:999px;
    font-size:15px;
    font-weight:600;
    background:#fff;
    color:var(--brand-700);
    border:1px solid #C8D6E8;
    box-shadow:var(--shadow-card);
    transition:transform .18s ease, box-shadow .18s ease, background-color .18s ease;
    min-height:44px;
  }
  .cat-tab:hover{
    background:var(--brand-100);
    border-color:var(--brand-500);
    transform:translateY(-2px);
    box-shadow:var(--shadow-card-hover);
  }
  .cat-tab.current{
    background:var(--brand-700);
    border-color:var(--brand-700);
    color:#fff;
  }
  .cat-tab.current:hover{transform:none;background:var(--brand-700);}
  .cat-tab:focus-visible{outline:2px solid var(--accent);outline-offset:2px;}

  /* ---------- Section heading ---------- */
  .section-head{
    display:flex;
    align-items:flex-end;
    justify-content:space-between;
    gap:24px;
    margin-bottom:38px;
    flex-wrap:wrap;
  }
  .section-head h2{
    font-size:30px;
    line-height:1.35;
    font-weight:800;
    letter-spacing:-.5px;
    color:var(--brand-900);
  }
  .section-head p{
    margin-top:10px;
    font-size:15.5px;
    color:var(--ink-soft);
    max-width:640px;
  }

  /* ---------- Check cards ---------- */
  .grid-4{
    display:grid;
    grid-template-columns:repeat(4,1fr);
    gap:24px;
  }
  .check-card{
    background:var(--surface);
    border:1px solid var(--line);
    border-radius:var(--radius-card);
    padding:24px;
    box-shadow:var(--shadow-card);
    transition:transform .2s ease, box-shadow .2s ease, border-color .2s ease;
  }
  .check-card:hover{
    transform:translateY(-2px);
    box-shadow:var(--shadow-card-hover);
    border-color:#C8D6E8;
  }
  .check-icon{
    width:44px;height:44px;
    border-radius:12px;
    background:var(--brand-100);
    color:var(--brand-700);
    display:flex;align-items:center;justify-content:center;
    font-size:18px;
    margin-bottom:16px;
  }
  .check-card h3{
    font-size:18px;
    font-weight:700;
    letter-spacing:-.3px;
    color:var(--ink);
    margin-bottom:8px;
    line-height:1.5;
  }
  .check-card p{
    font-size:14.5px;
    color:var(--ink-soft);
    line-height:1.8;
  }
  .check-card .tag{
    display:inline-flex;
    align-items:center;
    gap:6px;
    margin-top:14px;
    font-size:12.5px;
    font-weight:600;
    color:var(--brand-700);
    background:var(--brand-100);
    padding:4px 12px;
    border-radius:999px;
  }
  .check-card .tag::before{
    content:"";
    width:6px;height:6px;border-radius:50%;
    background:var(--accent);
  }

  /* ---------- Split section ---------- */
  .split{
    display:grid;
    grid-template-columns:1fr 1fr;
    gap:48px;
    align-items:center;
  }
  .figure-wrap{
    position:relative;
    border-radius:20px;
    overflow:hidden;
    box-shadow:var(--shadow-card);
    aspect-ratio:4 / 3;
    background:var(--brand-100);
  }
  .figure-wrap img{
    width:100%;height:100%;object-fit:cover;
    transition:transform .5s ease;
  }
  .figure-wrap:hover img{transform:scale(1.03);}
  .scene-list li{
    display:flex;
    gap:16px;
    padding:20px 0;
    border-bottom:1px solid var(--line);
  }
  .scene-list li:last-child{border-bottom:0;padding-bottom:0;}
  .scene-list li:first-child{padding-top:0;}
  .scene-index{
    flex-shrink:0;
    width:32px;height:32px;
    border-radius:10px;
    background:#fff;
    border:1px solid #C8D6E8;
    color:var(--brand-700);
    font-size:13px;
    font-weight:800;
    display:flex;align-items:center;justify-content:center;
    font-variant-numeric:tabular-nums;
  }
  .scene-list h3{
    font-size:17px;
    font-weight:700;
    color:var(--ink);
    margin-bottom:6px;
    line-height:1.5;
  }
  .scene-list p{
    font-size:14.5px;
    color:var(--ink-soft);
    line-height:1.8;
  }

  /* ---------- Steps ---------- */
  .steps-block{
    background:var(--surface);
    border:1px solid var(--line);
    border-radius:20px;
    padding:40px;
    box-shadow:var(--shadow-card);
  }
  .steps-list{position:relative;margin-top:8px;}
  .steps-list::before{
    content:"";
    position:absolute;
    left:27px;
    top:14px;
    bottom:26px;
    width:2px;
    background:linear-gradient(180deg, var(--brand-100), var(--line));
  }
  .step-item{
    position:relative;
    display:flex;
    gap:20px;
    padding-bottom:28px;
  }
  .step-item:last-child{padding-bottom:0;}
  .step-num{
    position:relative;
    z-index:2;
    flex-shrink:0;
    width:56px;height:56px;
    border-radius:16px;
    background:var(--brand-700);
    color:#fff;
    display:flex;align-items:center;justify-content:center;
    font-size:17px;
    font-weight:800;
    font-variant-numeric:tabular-nums;
    letter-spacing:-.5px;
    box-shadow:0 10px 20px -14px rgba(30,78,140,.95);
  }
  .step-body{
    background:var(--bg);
    border:1px solid var(--line);
    border-radius:var(--radius-card);
    padding:20px 24px;
    flex:1;
    transition:border-color .2s ease, background-color .2s ease;
  }
  .step-item:hover .step-body{
    border-color:#C8D6E8;
    background:#fff;
  }
  .step-body h3{
    font-size:17.5px;
    font-weight:700;
    color:var(--brand-900);
    margin-bottom:6px;
    line-height:1.5;
  }
  .step-body p{
    font-size:14.5px;
    color:var(--ink-soft);
    line-height:1.8;
  }

  .aside-card{
    background:var(--brand-100);
    border-radius:20px;
    padding:28px;
    border:1px solid #D6E4F6;
  }
  .aside-card h3{
    font-size:17px;
    font-weight:800;
    color:var(--brand-900);
    margin-bottom:14px;
    display:flex;align-items:center;gap:8px;
  }
  .aside-card h3 i{color:var(--accent);}
  .aside-card ul li{
    display:flex;
    gap:10px;
    font-size:14.5px;
    color:#2C4266;
    line-height:1.8;
    padding:8px 0;
  }
  .aside-card ul li i{
    color:var(--brand-500);
    font-size:12px;
    margin-top:8px;
  }

  /* ---------- List panel ---------- */
  .panel{
    background:var(--surface);
    border:1px solid var(--line);
    border-radius:20px;
    padding:32px;
    box-shadow:var(--shadow-card);
  }
  .info-row{
    display:flex;
    gap:18px;
    padding:22px 0;
    border-bottom:1px solid var(--line);
  }
  .info-row:last-child{border-bottom:0;padding-bottom:0;}
  .info-row:first-child{padding-top:0;}
  .info-badge{
    flex-shrink:0;
    align-self:flex-start;
    font-size:12.5px;
    font-weight:700;
    color:var(--brand-700);
    background:var(--brand-100);
    padding:5px 12px;
    border-radius:999px;
    white-space:nowrap;
  }
  .info-row h3{
    font-size:17px;
    font-weight:700;
    color:var(--ink);
    margin-bottom:6px;
    line-height:1.5;
  }
  .info-row p{
    font-size:14.5px;
    color:var(--ink-soft);
    line-height:1.8;
  }

  /* ---------- FAQ ---------- */
  .faq-list{display:grid;gap:12px;}
  .faq-item{
    background:var(--surface);
    border:1px solid var(--line);
    border-radius:var(--radius-card);
    overflow:hidden;
    transition:border-color .2s ease, box-shadow .2s ease;
  }
  .faq-item:hover{border-color:#C8D6E8;}
  .faq-item summary{
    list-style:none;
    cursor:pointer;
    display:flex;
    align-items:center;
    justify-content:space-between;
    gap:16px;
    min-height:64px;
    padding:18px 24px;
    font-size:16px;
    font-weight:600;
    color:var(--ink);
    transition:color .2s ease, background-color .2s ease;
  }
  .faq-item summary::-webkit-details-marker{display:none;}
  .faq-item summary:hover{color:var(--brand-700);background:#FAFCFF;}
  .faq-item summary:focus-visible{outline:2px solid var(--accent);outline-offset:-2px;}
  .faq-item summary .arrow{
    flex-shrink:0;
    width:26px;height:26px;
    border-radius:50%;
    background:var(--brand-100);
    color:var(--brand-700);
    display:flex;align-items:center;justify-content:center;
    font-size:11px;
    transition:transform .25s ease, background-color .2s ease;
  }
  .faq-item[open] summary{color:var(--brand-700);}
  .faq-item[open] .arrow{transform:rotate(180deg);background:var(--brand-700);color:#fff;}
  .faq-item[open]{
    border-left:3px solid var(--accent);
    background:#FBFDFF;
    box-shadow:var(--shadow-card);
  }
  .faq-answer{
    padding:0 24px 22px;
    font-size:15px;
    line-height:1.85;
    color:var(--ink-soft);
  }

  /* ---------- CTA ---------- */
  .cta-band{
    background:var(--brand-100);
    border-radius:20px;
    padding:44px;
    display:flex;
    align-items:center;
    justify-content:space-between;
    gap:32px;
    flex-wrap:wrap;
    border:1px solid #D6E4F6;
  }
  .cta-band h2{
    font-size:26px;
    font-weight:800;
    letter-spacing:-.5px;
    color:var(--brand-900);
    margin-bottom:8px;
  }
  .cta-band p{
    font-size:15px;
    color:#2C4266;
    max-width:560px;
  }
  .cta-actions{display:flex;gap:12px;flex-wrap:wrap;}

  /* ---------- Footer ---------- */
  .site-footer{
    background:var(--brand-900);
    color:#C9D8EC;
    padding:64px 0 0;
    margin-top:0;
  }
  .footer-top{
    display:grid;
    grid-template-columns:1.5fr 1fr 1fr 1.25fr;
    gap:40px;
    padding-bottom:44px;
  }
  .fb-logo{
    font-size:18px;
    font-weight:800;
    color:#fff;
    letter-spacing:-.4px;
    margin-bottom:14px;
  }
  .footer-brand p{
    font-size:14px;
    line-height:1.85;
    color:#A9C0DC;
    max-width:320px;
  }
  .footer-col h4{
    font-size:14px;
    font-weight:700;
    color:#fff;
    margin-bottom:16px;
    letter-spacing:.3px;
  }
  .footer-col ul li{margin-bottom:11px;}
  .footer-col ul li a{
    font-size:14px;
    color:#B6CBE4;
  }
  .footer-col ul li a:hover{color:#fff;}
  .footer-col ul li a:focus-visible{outline:2px solid var(--accent);outline-offset:2px;border-radius:4px;}
  .footer-contact li{
    display:flex;
    gap:10px;
    font-size:13.5px;
    color:#A9C0DC;
    line-height:1.7;
    margin-bottom:12px;
  }
  .footer-contact li i{color:var(--accent);margin-top:5px;font-size:12px;}
  .footer-bottom{
    border-top:1px solid rgba(255,255,255,.14);
    padding:20px 0 26px;
    display:flex;
    justify-content:space-between;
    gap:16px;
    flex-wrap:wrap;
    font-size:12.5px;
    color:#9CB4D2;
  }

  /* ---------- Responsive ---------- */
  @media (max-width:1080px){
    .nav-links{display:none;}
    .nav-toggle{display:inline-flex;}
    .header-actions .btn-ghost{display:none;}
    .head-grid{grid-template-columns:1fr;gap:32px;}
    .page-head h1{font-size:34px;}
    .grid-4{grid-template-columns:repeat(2,1fr);}
    .split{grid-template-columns:1fr;gap:32px;}
    .steps-block{padding:28px;}
    .footer-top{grid-template-columns:1fr 1fr;gap:32px;}
  }
  @media (max-width:768px){
    .container{padding:0 20px;}
    .section{padding:56px 0;}
    .section-tight{padding:44px 0;}
    .page-head{padding:38px 0 52px;}
    .page-head h1{font-size:30px;}
    .head-desc{font-size:15.5px;}
    .section-head h2{font-size:24px;}
    .grid-4{grid-template-columns:1fr;}
    .steps-list::before{display:none;}
    .step-item{flex-direction:column;gap:12px;}
    .step-num{width:44px;height:44px;border-radius:12px;font-size:15px;}
    .panel{padding:24px;}
    .cta-band{padding:28px;}
    .cta-band h2{font-size:22px;}
  }
  @media (max-width:640px){
    .header-inner{height:64px;gap:12px;}
    .brand-text strong{font-size:16px;}
    .brand-text small{font-size:11px;}
    .header-actions .btn-primary{padding:10px 14px;font-size:14px;}
    .cat-tab{flex:1 1 auto;justify-content:center;padding:11px 16px;font-size:14px;}
    .info-row{flex-direction:column;gap:10px;}
    .footer-top{grid-template-columns:1fr;gap:28px;}
    .footer-bottom{flex-direction:column;gap:8px;}
    .page-head h1{font-size:26px;letter-spacing:-.3px;}
    .stat-row .value{font-size:19px;}
  }

/* roulang page: article */
:root{
  --brand-700:#1E4E8C;
  --brand-900:#143A6B;
  --brand-500:#2F7FD1;
  --brand-100:#E8F0FA;
  --accent:#F2A03D;
  --bg:#F6F8FB;
  --surface:#FFFFFF;
  --line:#E3E9F2;
  --ink:#16233A;
  --ink-soft:#5A6B85;
  --radius-card:14px;
  --radius-btn:10px;
  --radius-block:20px;
  --shadow-card:0 1px 2px rgba(22,35,58,.05),0 10px 24px -12px rgba(22,35,58,.18);
  --shadow-card-hover:0 2px 4px rgba(22,35,58,.06),0 18px 36px -16px rgba(22,35,58,.24);
}
*,*::before,*::after{box-sizing:border-box}
html{-webkit-text-size-adjust:100%;scroll-behavior:smooth}
body{
  margin:0;
  font-family:-apple-system,BlinkMacSystemFont,"PingFang SC","Microsoft YaHei","Noto Sans SC",sans-serif;
  background:var(--bg);
  color:var(--ink);
  font-size:16px;
  line-height:1.8;
  -webkit-font-smoothing:antialiased;
}
a{color:inherit;text-decoration:none}
img{display:block;max-width:100%}
button{font:inherit;cursor:pointer;border:0;background:none;color:inherit}
ul,ol{margin:0;padding:0;list-style:none}
h1,h2,h3,h4,p{margin:0}
:focus-visible{outline:2px solid var(--accent);outline-offset:2px}
.container{width:100%;max-width:1200px;margin:0 auto;padding:0 24px}

/* ============ 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 .25s ease;
}
.site-header.is-scrolled{box-shadow:0 8px 24px -16px rgba(22,35,58,.45)}
.header-inner{display:flex;align-items:center;justify-content:space-between;gap:24px;height:72px}
.brand{display:flex;align-items:center;gap:12px;flex-shrink:0}
.brand-mark{
  width:40px;height:40px;border-radius:12px;
  background:var(--brand-700);color:#fff;
  display:flex;align-items:center;justify-content:center;
  font-size:17px;
  box-shadow:0 6px 16px -10px rgba(30,78,140,.9);
}
.brand-text{display:flex;flex-direction:column;line-height:1.25}
.brand-name{font-size:19px;font-weight:800;color:var(--brand-900);letter-spacing:-.3px}
.brand-sub{font-size:12px;color:var(--ink-soft);margin-top:2px}
.nav-links{display:flex;align-items:center;gap:26px}
.nav-link{
  position:relative;font-size:15px;color:var(--ink-soft);
  padding:6px 2px;transition:color .2s ease;
}
.nav-link::after{
  content:"";position:absolute;left:0;right:0;bottom:-2px;height:2px;
  background:var(--accent);border-radius:2px;
  transform:scaleX(0);transform-origin:center;transition:transform .22s ease;
}
.nav-link:hover{color:var(--brand-700)}
.nav-link:hover::after,.nav-link.active::after{transform:scaleX(1)}
.nav-link.active{color:var(--brand-700);font-weight:600}
.nav-pill{
  border:1px solid #C8D6E8;border-radius:999px;
  padding:7px 16px;color:var(--brand-700);background:var(--surface);
  transition:background .2s ease,border-color .2s ease;
}
.nav-pill::after{display:none}
.nav-pill:hover{background:var(--brand-100);border-color:var(--brand-500)}
.nav-actions{display:flex;align-items:center;gap:12px}
.nav-toggle{
  display:none;width:44px;height:44px;border-radius:10px;
  border:1px solid var(--line);color:var(--brand-700);font-size:17px;
  align-items:center;justify-content:center;background:var(--surface);
}
.nav-toggle:hover{background:var(--brand-100);border-color:var(--brand-500)}
.mobile-drawer{display:none;border-top:1px solid var(--line);background:var(--surface);padding:10px 0 18px}
.mobile-drawer.open{display:block}
.mobile-drawer a.m-link{
  display:flex;align-items:center;justify-content:space-between;
  padding:13px 24px;font-size:15px;color:var(--ink-soft);
  border-bottom:1px solid var(--line);
}
.mobile-drawer a.m-link:hover{background:var(--brand-100);color:var(--brand-700)}
.mobile-drawer .m-cta{margin:16px 24px 0;display:flex}

/* ============ 按钮 ============ */
.btn{
  display:inline-flex;align-items:center;justify-content:center;gap:8px;
  height:44px;padding:0 20px;border-radius:var(--radius-btn);
  font-size:15px;font-weight:600;white-space:nowrap;
  transition:background .2s ease,color .2s ease,border-color .2s ease,transform .2s ease,box-shadow .2s ease;
}
.btn-primary{background:var(--brand-700);color:#fff;box-shadow:0 1px 2px rgba(22,35,58,.08)}
.btn-primary:hover{background:#17407A;transform:translateY(-1px);box-shadow:0 12px 24px -14px rgba(30,78,140,.95)}
.btn-primary:active{transform:translateY(0)}
.btn-ghost{background:var(--surface);color:var(--brand-700);border:1px solid #C8D6E8}
.btn-ghost:hover{background:var(--brand-100);border-color:var(--brand-500)}
.btn-sm{height:38px;padding:0 16px;font-size:14px}
.btn:focus-visible{outline:2px solid var(--accent);outline-offset:2px}

/* ============ 面包屑 ============ */
.page-top{padding:28px 0 0}
.breadcrumb{
  display:flex;flex-wrap:wrap;align-items:center;gap:8px;
  font-size:13px;color:var(--ink-soft);
}
.breadcrumb a{color:var(--ink-soft);transition:color .2s ease}
.breadcrumb a:hover{color:var(--brand-500)}
.breadcrumb .sep{color:#BCC9DB}
.breadcrumb .current{color:var(--brand-700);font-weight:600}

/* ============ 文章头 ============ */
.article-head{padding:26px 0 0;max-width:920px}
.badge{
  display:inline-flex;align-items:center;gap:7px;
  background:var(--brand-100);color:var(--brand-700);
  border-radius:999px;padding:5px 13px;font-size:12.5px;font-weight:600;
}
.badge-dot::before{
  content:"";width:6px;height:6px;border-radius:50%;
  background:var(--accent);display:inline-block;
}
.article-title{
  font-size:42px;line-height:1.25;font-weight:800;
  letter-spacing:-.5px;color:var(--brand-900);
  margin-top:18px;
  display:-webkit-box;-webkit-line-clamp:2;-webkit-box-orient:vertical;overflow:hidden;
}
.article-meta{
  display:flex;flex-wrap:wrap;align-items:center;gap:20px;
  margin-top:22px;padding-bottom:24px;
  font-size:14px;color:var(--ink-soft);
  font-variant-numeric:tabular-nums;
  border-bottom:1px solid var(--line);
}
.meta-item{display:inline-flex;align-items:center;gap:7px}
.meta-item i{color:var(--brand-500);font-size:13px}
.meta-actions{margin-left:auto;display:flex;gap:10px}

/* ============ 两栏主体 ============ */
.article-layout{
  display:grid;grid-template-columns:minmax(0,1fr) 300px;
  gap:48px;padding:38px 0 0;align-items:start;
}
.article-main{min-width:0}
.article-body{
  max-width:760px;
  font-size:16px;line-height:1.85;color:var(--ink);
  word-break:break-word;
}
.article-body p{margin:0 0 18px}
.article-body h2{
  position:relative;font-size:24px;line-height:1.4;font-weight:700;
  color:var(--brand-900);margin:40px 0 16px;padding-left:14px;scroll-margin-top:96px;
}
.article-body h2::before{
  content:"";position:absolute;left:0;top:6px;bottom:6px;width:4px;
  border-radius:2px;background:var(--accent);
}
.article-body h3{font-size:20px;line-height:1.5;font-weight:600;color:var(--brand-900);margin:28px 0 12px;scroll-margin-top:96px}
.article-body h4{font-size:17px;font-weight:600;color:var(--brand-900);margin:22px 0 10px}
.article-body ul,.article-body ol{margin:0 0 18px;padding-left:1.4em}
.article-body ul{list-style:disc}
.article-body ol{list-style:decimal}
.article-body li{margin:8px 0;line-height:1.9}
.article-body li::marker{color:var(--brand-500)}
.article-body blockquote{
  margin:24px 0;padding:20px 24px;
  background:var(--brand-100);
  border-left:3px solid var(--brand-700);
  border-radius:0 10px 10px 0;
  color:var(--brand-900);
}
.article-body blockquote p:last-child{margin-bottom:0}
.article-body img{border-radius:12px;margin:24px 0;width:100%;height:auto}
.article-body figure{margin:24px 0}
.article-body figcaption{font-size:12.5px;color:#8697AE;text-align:center;margin-top:10px}
.article-body a{color:var(--brand-500);border-bottom:1px solid transparent;transition:border-color .2s ease}
.article-body a:hover{border-bottom-color:var(--brand-500)}
.article-body strong{font-weight:700;color:var(--brand-900)}
.article-body table{width:100%;border-collapse:collapse;margin:24px 0;font-size:15px}
.article-body th,.article-body td{border-bottom:1px solid var(--line);padding:12px 14px;text-align:left;vertical-align:top}
.article-body th{background:var(--brand-100);color:var(--brand-900);font-weight:600;border-top:1px solid var(--line)}
.article-body hr{border:0;border-top:1px solid var(--line);margin:32px 0}
.article-body code{background:var(--brand-100);color:var(--brand-900);padding:2px 6px;border-radius:6px;font-size:14px}

/* ============ 侧栏 ============ */
.sidebar{
  display:flex;flex-direction:column;gap:20px;
  position:sticky;top:96px;
}
.side-card{
  background:var(--surface);border:1px solid var(--line);
  border-radius:var(--radius-card);padding:20px;
  box-shadow:var(--shadow-card);
}
.side-card h3{
  display:flex;align-items:center;gap:8px;
  font-size:15px;font-weight:700;color:var(--brand-900);
  margin-bottom:14px;
}
.side-card h3 i{color:var(--accent);font-size:13px}
.toc-list a{
  display:block;font-size:14px;line-height:1.6;color:var(--ink-soft);
  padding:8px 10px;border-radius:8px;border-left:2px solid transparent;
  transition:background .2s ease,color .2s ease,border-color .2s ease;
  overflow:hidden;text-overflow:ellipsis;white-space:nowrap;
}
.toc-list a:hover{background:var(--brand-100);color:var(--brand-700)}
.toc-list a.active{
  background:var(--brand-100);color:var(--brand-700);
  font-weight:600;border-left-color:var(--accent);
}
.toc-empty{font-size:13.5px;color:#8697AE;line-height:1.7}
.side-links a{
  display:flex;align-items:center;justify-content:space-between;gap:10px;
  font-size:14px;color:var(--ink-soft);padding:11px 0;
  border-bottom:1px dashed var(--line);transition:color .2s ease;
}
.side-links a:last-child{border-bottom:0}
.side-links a:hover{color:var(--brand-500)}
.side-links i{font-size:12px;color:#B4C3D6}
.side-tip{background:var(--brand-100);border:1px solid #D8E5F4;box-shadow:none}
.side-tip p{font-size:13.5px;line-height:1.75;color:var(--brand-900)}
.side-share{display:flex;gap:10px;margin-top:14px}

/* ============ 文末 ============ */
.article-foot{
  max-width:760px;margin-top:44px;padding-top:26px;
  border-top:1px solid var(--line);
  display:flex;flex-wrap:wrap;gap:18px;align-items:center;justify-content:space-between;
}
.tag-group{display:flex;flex-wrap:wrap;gap:8px}
.tag{
  background:var(--brand-100);color:var(--brand-700);
  border-radius:999px;padding:5px 13px;font-size:12.5px;font-weight:500;
  transition:background .2s ease,color .2s ease;
}
.tag:hover{background:var(--brand-700);color:#fff}
.share-group{display:flex;gap:10px;flex-wrap:wrap}

/* ============ 空状态 ============ */
.notice{
  max-width:760px;background:var(--surface);border:1px solid var(--line);
  border-radius:var(--radius-card);padding:56px 28px;text-align:center;
  box-shadow:var(--shadow-card);
}
.notice-icon{
  width:64px;height:64px;margin:0 auto 18px;border-radius:18px;
  background:var(--brand-100);color:var(--brand-700);
  display:flex;align-items:center;justify-content:center;font-size:24px;
}
.notice h2{font-size:22px;font-weight:700;color:var(--brand-900);margin-bottom:10px}
.notice p{font-size:15px;color:var(--ink-soft);max-width:460px;margin:0 auto 22px}

/* ============ 通用板块 ============ */
.section{padding:80px 0 0}
.section-head{
  display:flex;align-items:flex-end;justify-content:space-between;
  gap:20px;margin-bottom:28px;flex-wrap:wrap;
}
.section-title{font-size:30px;font-weight:800;letter-spacing:-.5px;color:var(--brand-900);line-height:1.35}
.section-desc{font-size:15px;color:var(--ink-soft);margin-top:8px;max-width:640px}
.link-more{
  display:inline-flex;align-items:center;gap:6px;
  font-size:15px;font-weight:600;color:var(--brand-500);
  transition:gap .2s ease,color .2s ease;
}
.link-more:hover{gap:11px;color:var(--brand-700)}

/* ============ 卡片 ============ */
.card-grid{display:grid;grid-template-columns:repeat(3,minmax(0,1fr));gap:24px}
.card{
  display:flex;flex-direction:column;
  background:var(--surface);border:1px solid var(--line);
  border-radius:var(--radius-card);overflow:hidden;
  box-shadow:var(--shadow-card);
  transition:transform .25s ease,box-shadow .25s ease;
}
.card:hover{transform:translateY(-2px);box-shadow:var(--shadow-card-hover)}
.card-cover{aspect-ratio:16/9;overflow:hidden;background:var(--brand-100)}
.card-cover img{width:100%;height:100%;object-fit:cover;transition:transform .45s ease}
.card:hover .card-cover img{transform:scale(1.04)}
.card-body{padding:20px 22px 22px;display:flex;flex-direction:column;gap:10px;flex:1}
.card-body h3{
  font-size:18px;line-height:1.5;font-weight:700;color:var(--brand-900);
  display:-webkit-box;-webkit-line-clamp:2;-webkit-box-orient:vertical;overflow:hidden;
}
.card:hover .card-body h3{color:var(--brand-700)}
.card-body p{
  font-size:14px;line-height:1.75;color:var(--ink-soft);
  display:-webkit-box;-webkit-line-clamp:2;-webkit-box-orient:vertical;overflow:hidden;
}
.card-meta{
  margin-top:auto;padding-top:6px;
  display:flex;align-items:center;gap:10px;
  font-size:12.5px;color:#8697AE;font-variant-numeric:tabular-nums;
}
.card-meta .dot{width:3px;height:3px;border-radius:50%;background:#C3D0E1}

/* ============ CTA ============ */
.cta-band{
  margin-top:80px;
  position:relative;overflow:hidden;
  background-color:var(--brand-100);
  background-image:radial-gradient(rgba(30,78,140,.10) 1px,transparent 1px);
  background-size:18px 18px;
  border:1px solid #D8E5F4;
  border-radius:var(--radius-block);
  padding:42px 40px;
  display:flex;align-items:center;justify-content:space-between;
  gap:28px;flex-wrap:wrap;
}
.cta-band h2{font-size:26px;font-weight:800;color:var(--brand-900);letter-spacing:-.4px;line-height:1.4}
.cta-band p{font-size:15px;color:var(--ink-soft);margin-top:8px;max-width:520px}
.cta-actions{display:flex;gap:12px;flex-wrap:wrap}

/* ============ 页脚 ============ */
.site-footer{background:var(--brand-900);color:#C9D8EC;margin-top:88px;padding:64px 0 0}
.footer-top{
  display:grid;grid-template-columns:1.6fr 1fr 1fr 1.3fr;
  gap:36px;padding-bottom:44px;
}
.fb-logo{font-size:18px;font-weight:800;color:#fff;margin-bottom:14px;letter-spacing:-.2px}
.footer-brand p{font-size:14px;line-height:1.8;color:#A9BEDC;max-width:330px}
.footer-col h4{font-size:15px;font-weight:700;color:#fff;margin-bottom:16px}
.footer-col ul li{margin-bottom:10px}
.footer-col a{font-size:14px;color:#A9BEDC;transition:color .2s ease}
.footer-col a:hover{color:#7FB3E8}
.footer-contact li{display:flex;gap:10px;font-size:13.5px;line-height:1.7;color:#A9BEDC;margin-bottom:12px}
.footer-contact i{color:var(--accent);margin-top:5px;font-size:12px;flex-shrink:0}
.footer-bottom{
  border-top:1px solid rgba(255,255,255,.12);
  padding:20px 0;display:flex;flex-wrap:wrap;gap:12px;
  justify-content:space-between;font-size:12.5px;color:#8FA7C6;
}

/* ============ 响应式 ============ */
@media (max-width:1023px){
  .nav-links{display:none}
  .nav-actions{display:none}
  .nav-toggle{display:inline-flex}
  .header-inner{height:64px}
  .article-layout{grid-template-columns:1fr;gap:36px}
  .sidebar{position:static}
  .article-title{font-size:32px}
  .card-grid{grid-template-columns:repeat(2,minmax(0,1fr))}
  .footer-top{grid-template-columns:1fr 1fr;gap:30px}
  .section{padding:60px 0 0}
  .cta-band{margin-top:60px;padding:34px 28px}
  .site-footer{margin-top:64px}
}
@media (max-width:767px){
  .container{padding:0 20px}
  .brand-name{font-size:17px}
  .brand-sub{display:none}
  .article-title{font-size:28px}
  .article-meta{gap:14px;font-size:13px}
  .meta-actions{margin-left:0;width:100%}
  .section-title{font-size:24px}
  .card-grid{grid-template-columns:1fr}
  .footer-top{grid-template-columns:1fr}
  .cta-band h2{font-size:22px}
  .article-body h2{font-size:21px}
  .article-body h3{font-size:18px}
}
@media (max-width:519px){
  .article-title{font-size:25px}
  .notice{padding:40px 20px}
  .cta-band{padding:28px 22px}
  .article-foot{flex-direction:column;align-items:flex-start}
}

/* roulang page: category3 */
:root{
    --brand-700:#1E4E8C;
    --brand-900:#143A6B;
    --brand-500:#2F7FD1;
    --brand-100:#E8F0FA;
    --accent:#F2A03D;
    --bg:#F6F8FB;
    --surface:#FFFFFF;
    --line:#E3E9F2;
    --ink:#16233A;
    --ink-soft:#5A6B85;
    --radius-card:14px;
    --radius-img:12px;
    --radius-btn:10px;
    --radius-block:20px;
    --shadow-card:0 1px 2px rgba(22,35,58,.05), 0 10px 24px -12px rgba(22,35,58,.18);
    --shadow-hover:0 2px 4px rgba(22,35,58,.06), 0 18px 36px -16px rgba(22,35,58,.24);
  }
  *,*::before,*::after{box-sizing:border-box;}
  html{-webkit-text-size-adjust:100%;scroll-behavior:smooth;}
  body{
    margin:0;
    background:var(--bg);
    color:var(--ink);
    font-family:-apple-system,BlinkMacSystemFont,"PingFang SC","Microsoft YaHei","Noto Sans SC","Helvetica Neue",sans-serif;
    font-size:16px;
    line-height:1.8;
    -webkit-font-smoothing:antialiased;
  }
  img{max-width:100%;display:block;}
  a{color:var(--brand-700);text-decoration:none;transition:color .18s ease,opacity .18s ease;}
  a:hover{color:var(--brand-500);}
  button{font-family:inherit;cursor:pointer;}
  h1,h2,h3,h4{margin:0;color:var(--brand-900);font-weight:800;letter-spacing:-.5px;line-height:1.3;}
  p{margin:0;}
  ul{margin:0;padding:0;list-style:none;}
  .container{width:100%;max-width:1200px;margin:0 auto;padding:0 24px;}
  .num{font-variant-numeric:tabular-nums;}

  /* ============ 导航 ============ */
  .site-header{
    position:sticky;top:0;z-index:60;
    background:var(--surface);
    border-bottom:1px solid var(--line);
    transition:box-shadow .2s ease;
  }
  .site-header.scrolled{box-shadow:0 6px 18px -12px rgba(22,35,58,.28);}
  .nav-inner{
    display:flex;align-items:center;gap:28px;
    height:72px;
  }
  .brand{display:flex;align-items:center;gap:12px;flex-shrink:0;}
  .brand-mark{
    width:40px;height:40px;border-radius:12px;
    background:linear-gradient(150deg,var(--brand-700),var(--brand-500));
    display:flex;align-items:center;justify-content:center;
    color:#fff;font-size:17px;
  }
  .brand-text{display:flex;flex-direction:column;line-height:1.2;}
  .brand-text .b-main{font-size:20px;font-weight:800;color:var(--brand-900);letter-spacing:-.4px;}
  .brand-text .b-sub{font-size:12px;color:var(--ink-soft);font-weight:400;letter-spacing:0;margin-top:2px;}
  .nav-links{display:flex;align-items:center;gap:6px;margin-left:auto;}
  .nav-link{
    position:relative;
    display:inline-flex;align-items:center;
    height:40px;padding:0 14px;border-radius:var(--radius-btn);
    font-size:15px;color:var(--ink);font-weight:500;
  }
  .nav-link::after{
    content:"";position:absolute;left:14px;right:14px;bottom:5px;height:2px;
    background:var(--accent);border-radius:2px;transform:scaleX(0);transform-origin:left;
    transition:transform .2s ease;
  }
  .nav-link:hover{color:var(--brand-700);}
  .nav-link:hover::after{transform:scaleX(1);}
  .nav-link.active{color:var(--brand-700);font-weight:700;}
  .nav-link.active::after{transform:scaleX(1);}
  .nav-pill{
    border:1px solid #C8D6E8;border-radius:999px;padding:0 16px;
    color:var(--brand-700);background:#fff;
  }
  .nav-pill::after{display:none;}
  .nav-pill:hover{background:var(--brand-100);border-color:var(--brand-500);color:var(--brand-700);}
  .nav-actions{display:flex;align-items:center;gap:10px;flex-shrink:0;}
  .btn{
    display:inline-flex;align-items:center;justify-content:center;gap:8px;
    height:44px;padding:0 20px;border-radius:var(--radius-btn);
    font-size:15px;font-weight:600;border:1px solid transparent;
    transition:transform .18s ease,background-color .18s ease,border-color .18s ease,box-shadow .18s ease,color .18s ease;
    white-space:nowrap;
  }
  .btn:focus-visible{outline:2px solid var(--accent);outline-offset:2px;}
  .btn-primary{background:var(--brand-700);color:#fff;box-shadow:0 8px 18px -12px rgba(30,78,140,.9);}
  .btn-primary:hover{background:#17407A;color:#fff;transform:translateY(-1px);box-shadow:0 14px 26px -14px rgba(30,78,140,.9);}
  .btn-primary:active{transform:translateY(0);}
  .btn-ghost{background:#fff;color:var(--brand-700);border-color:#C8D6E8;}
  .btn-ghost:hover{background:var(--brand-100);border-color:var(--brand-700);}
  .btn-ghost:active{transform:translateY(0);}
  .btn-text{
    display:inline-flex;align-items:center;gap:6px;color:var(--brand-700);
    font-weight:600;font-size:15px;background:none;border:0;padding:0;height:auto;
  }
  .btn-text i{transition:transform .18s ease;}
  .btn-text:hover i{transform:translateX(3px);}
  .btn-text:focus-visible{outline:2px solid var(--accent);outline-offset:3px;border-radius:6px;}
  .menu-toggle{
    display:none;width:44px;height:44px;border-radius:var(--radius-btn);
    background:#fff;border:1px solid var(--line);color:var(--brand-700);font-size:17px;
    align-items:center;justify-content:center;
  }
  .menu-toggle:hover{border-color:var(--brand-500);color:var(--brand-500);}

  /* ============ 页头 ============ */
  .page-head{
    position:relative;overflow:hidden;
    background:var(--surface);
    border-bottom:1px solid var(--line);
    padding:44px 0 48px;
  }
  .page-head::before{
    content:"";position:absolute;inset:0;
    background-image:radial-gradient(rgba(30,78,140,.10) 1px, transparent 1px);
    background-size:18px 18px;opacity:.55;pointer-events:none;
  }
  .page-head .container{position:relative;z-index:1;}
  .breadcrumb{
    display:flex;align-items:center;gap:8px;flex-wrap:wrap;
    font-size:13px;color:var(--ink-soft);margin-bottom:18px;
  }
  .breadcrumb a{color:var(--ink-soft);}
  .breadcrumb a:hover{color:var(--brand-500);}
  .breadcrumb .sep{color:#B9C5D6;}
  .breadcrumb .current{color:var(--brand-700);font-weight:600;}
  .head-grid{display:grid;grid-template-columns:minmax(0,1fr) 300px;gap:36px;align-items:center;}
  .head-eyebrow{
    display:inline-flex;align-items:center;gap:8px;
    height:28px;padding:0 12px;border-radius:999px;
    background:var(--brand-100);color:var(--brand-700);
    font-size:12.5px;font-weight:600;margin-bottom:16px;
  }
  .head-eyebrow .dot{width:6px;height:6px;border-radius:50%;background:var(--accent);}
  h1{font-size:42px;line-height:1.25;}
  .head-sub{margin-top:14px;font-size:16px;color:var(--ink-soft);max-width:620px;}
  .head-visual{
    position:relative;border-radius:var(--radius-block);overflow:hidden;
    box-shadow:var(--shadow-card);aspect-ratio:4/3;
  }
  .head-visual img{width:100%;height:100%;object-fit:cover;}
  .head-stat{
    position:absolute;left:14px;right:14px;bottom:14px;
    background:rgba(255,255,255,.95);
    border-radius:var(--radius-card);padding:12px 14px;box-shadow:var(--shadow-card);
    display:flex;align-items:center;justify-content:space-between;gap:10px;
  }
  .head-stat .stat-item{text-align:center;flex:1;}
  .head-stat .stat-num{font-size:18px;font-weight:800;color:var(--brand-700);line-height:1.2;}
  .head-stat .stat-label{font-size:12px;color:var(--ink-soft);margin-top:2px;}

  /* ============ 分类切换 ============ */
  .tab-row{
    display:flex;align-items:center;gap:10px;flex-wrap:wrap;
    padding:22px 0 0;
  }
  .tab{
    display:inline-flex;align-items:center;gap:8px;
    height:42px;padding:0 18px;border-radius:999px;
    border:1px solid #C8D6E8;background:#fff;color:var(--brand-700);
    font-size:14.5px;font-weight:600;
    transition:all .18s ease;
  }
  .tab:hover{background:var(--brand-100);border-color:var(--brand-500);}
  .tab:focus-visible{outline:2px solid var(--accent);outline-offset:2px;}
  .tab.is-active{background:var(--brand-700);border-color:var(--brand-700);color:#fff;box-shadow:0 10px 20px -14px rgba(30,78,140,.9);}
  .tab.is-active:hover{background:#17407A;color:#fff;}

  /* ============ 主体区 ============ */
  .section{padding:64px 0;}
  .section-tight{padding:48px 0;}
  .section-head{display:flex;align-items:flex-end;justify-content:space-between;gap:20px;margin-bottom:28px;flex-wrap:wrap;}
  .section-head h2{font-size:30px;line-height:1.35;}
  .section-head .desc{margin-top:8px;font-size:14.5px;color:var(--ink-soft);}
  .layout-7-5{display:grid;grid-template-columns:minmax(0,7fr) minmax(0,5fr);gap:32px;align-items:start;}

  .points-grid{display:grid;grid-template-columns:repeat(2,minmax(0,1fr));gap:16px;}
  .point-card{
    background:var(--surface);border:1px solid var(--line);border-radius:var(--radius-card);
    padding:22px;box-shadow:var(--shadow-card);
    transition:transform .2s ease,box-shadow .2s ease,border-color .2s ease;
    display:flex;gap:14px;align-items:flex-start;
  }
  .point-card:hover{transform:translateY(-2px);box-shadow:var(--shadow-hover);border-color:#CFDCEC;}
  .point-num{
    flex-shrink:0;width:34px;height:34px;border-radius:10px;
    background:var(--brand-100);color:var(--brand-700);
    display:flex;align-items:center;justify-content:center;
    font-size:14px;font-weight:800;font-variant-numeric:tabular-nums;
  }
  .point-card h3{font-size:17px;line-height:1.5;font-weight:700;color:var(--brand-900);}
  .point-card p{margin-top:6px;font-size:14.5px;color:var(--ink-soft);line-height:1.75;}
  .point-card .tag{
    display:inline-flex;align-items:center;gap:6px;margin-top:12px;
    height:24px;padding:0 10px;border-radius:999px;
    background:var(--brand-100);color:var(--brand-700);
    font-size:12px;font-weight:600;
  }
  .point-card .tag i{font-size:10px;}

  /* 侧栏 */
  .side-stack{display:flex;flex-direction:column;gap:20px;position:sticky;top:96px;}
  .side-card{
    background:var(--surface);border:1px solid var(--line);border-radius:var(--radius-card);
    padding:24px;box-shadow:var(--shadow-card);
  }
  .side-card h3{font-size:18px;display:flex;align-items:center;gap:9px;}
  .side-card h3 i{color:var(--brand-500);font-size:15px;}
  .tip-list{margin-top:16px;display:flex;flex-direction:column;gap:12px;}
  .tip-list li{display:flex;gap:11px;align-items:flex-start;font-size:14.5px;color:var(--ink-soft);line-height:1.7;}
  .tip-list li .tick{
    flex-shrink:0;width:20px;height:20px;border-radius:50%;
    background:var(--brand-100);color:var(--brand-700);
    display:flex;align-items:center;justify-content:center;font-size:10px;margin-top:4px;
  }
  .side-visual{
    border-radius:var(--radius-img);overflow:hidden;aspect-ratio:4/3;
    margin-top:16px;border:1px solid var(--line);
  }
  .side-visual img{width:100%;height:100%;object-fit:cover;}

  /* FAQ */
  .faq-list{margin-top:16px;display:flex;flex-direction:column;gap:0;}
  .faq-item{
    border-bottom:1px solid var(--line);
    transition:background-color .18s ease,border-color .18s ease;
  }
  .faq-item:last-child{border-bottom:0;}
  .faq-item summary{
    list-style:none;cursor:pointer;
    min-height:64px;display:flex;align-items:center;justify-content:space-between;gap:12px;
    padding:10px 4px 10px 12px;font-size:15.5px;font-weight:600;color:var(--ink);
    border-left:3px solid transparent;border-radius:6px;
    transition:all .18s ease;
  }
  .faq-item summary::-webkit-details-marker{display:none;}
  .faq-item summary:hover{color:var(--brand-700);}
  .faq-item summary:focus-visible{outline:2px solid var(--accent);outline-offset:2px;}
  .faq-item summary .chev{color:var(--ink-soft);font-size:12px;transition:transform .2s ease;}
  .faq-item[open]{background:var(--brand-100);border-radius:8px;}
  .faq-item[open] summary{border-left-color:var(--accent);color:var(--brand-700);padding-left:12px;}
  .faq-item[open] summary .chev{transform:rotate(180deg);color:var(--brand-700);}
  .faq-answer{
    padding:0 16px 16px 16px;font-size:14.5px;line-height:1.8;color:var(--ink-soft);
  }

  /* 相关推荐 */
  .rel-strip{margin-top:8px;}
  .chip-row{display:flex;flex-wrap:wrap;gap:10px;margin-bottom:20px;}
  .chip{
    display:inline-flex;align-items:center;height:32px;padding:0 14px;border-radius:999px;
    background:var(--surface);border:1px solid var(--line);color:var(--ink-soft);
    font-size:13.5px;transition:all .18s ease;
  }
  .chip:hover{color:var(--brand-700);border-color:var(--brand-500);background:var(--brand-100);}
  .rel-scroll{
    display:grid;grid-auto-flow:column;grid-auto-columns:minmax(260px,1fr);gap:16px;
    overflow-x:auto;padding-bottom:8px;
    scrollbar-width:none;-ms-overflow-style:none;
  }
  .rel-scroll::-webkit-scrollbar{display:none;}
  .rel-card{
    background:var(--surface);border:1px solid var(--line);border-radius:var(--radius-card);
    overflow:hidden;box-shadow:var(--shadow-card);
    transition:transform .2s ease,box-shadow .2s ease;
    display:block;color:inherit;
  }
  .rel-card:hover{transform:translateY(-2px);box-shadow:var(--shadow-hover);color:inherit;}
  .rel-thumb{aspect-ratio:16/9;overflow:hidden;background:var(--brand-100);}
  .rel-thumb img{width:100%;height:100%;object-fit:cover;transition:transform .35s ease;}
  .rel-card:hover .rel-thumb img{transform:scale(1.04);}
  .rel-body{padding:16px 18px 18px;}
  .rel-body .badge{
    display:inline-flex;align-items:center;gap:6px;height:24px;padding:0 10px;border-radius:999px;
    background:var(--brand-100);color:var(--brand-700);font-size:12px;font-weight:600;
  }
  .rel-body .badge::before{content:"";width:6px;height:6px;border-radius:50%;background:var(--accent);}
  .rel-body h3{margin-top:10px;font-size:16.5px;line-height:1.5;transition:color .18s ease;}
  .rel-card:hover h3{color:var(--brand-700);}
  .rel-body p{margin-top:6px;font-size:13.5px;color:var(--ink-soft);line-height:1.7;}

  /* CTA */
  .cta-band{
    background:var(--brand-100);border-radius:var(--radius-block);
    padding:40px;display:flex;align-items:center;justify-content:space-between;gap:28px;flex-wrap:wrap;
    border:1px solid #D6E4F5;
  }
  .cta-band h2{font-size:26px;line-height:1.35;}
  .cta-band p{margin-top:8px;font-size:14.5px;color:var(--ink-soft);max-width:560px;}
  .cta-actions{display:flex;gap:12px;flex-wrap:wrap;}

  /* 页脚 */
  .site-footer{background:var(--brand-900);color:#C9D8EA;margin-top:72px;}
  .footer-top{
    display:grid;grid-template-columns:1.6fr 1fr 1fr 1.3fr;gap:32px;
    padding:56px 0 40px;
  }
  .fb-logo{font-size:19px;font-weight:800;color:#fff;letter-spacing:-.3px;}
  .footer-brand p{margin-top:14px;font-size:14px;line-height:1.8;color:#A9BED6;max-width:340px;}
  .footer-col h4{font-size:14.5px;color:#fff;margin-bottom:16px;letter-spacing:0;}
  .footer-col ul{display:flex;flex-direction:column;gap:11px;}
  .footer-col a{color:#C9D8EA;font-size:14px;}
  .footer-col a:hover{color:#8FB8E4;}
  .footer-contact li{display:flex;gap:10px;font-size:13.5px;color:#A9BED6;line-height:1.7;align-items:flex-start;}
  .footer-contact i{color:#8FB8E4;margin-top:5px;font-size:13px;}
  .footer-bottom{
    border-top:1px solid rgba(255,255,255,.14);
    padding:20px 0;display:flex;justify-content:space-between;gap:16px;flex-wrap:wrap;
    font-size:12.5px;color:#93A9C4;
  }

  /* ============ 响应式 ============ */
  @media (max-width:1023px){
    .nav-links{
      position:absolute;top:100%;left:0;right:0;
      display:none;flex-direction:column;align-items:stretch;gap:4px;
      background:#fff;border-bottom:1px solid var(--line);
      padding:14px 20px 20px;box-shadow:0 18px 36px -16px rgba(22,35,58,.24);
      margin-left:0;
    }
    .nav-links.open{display:flex;}
    .nav-link{height:46px;width:100%;padding:0 14px;}
    .nav-link::after{display:none;}
    .nav-pill{border-radius:999px;}
    .menu-toggle{display:flex;margin-left:auto;}
    .nav-inner{height:64px;gap:14px;}
    .nav-actions .btn-ghost{display:none;}
    .head-grid{grid-template-columns:1fr;gap:28px;}
    .head-visual{aspect-ratio:16/9;}
    h1{font-size:32px;}
    .layout-7-5{grid-template-columns:1fr;gap:28px;}
    .side-stack{position:static;}
    .section{padding:56px 0;}
    .section-head h2{font-size:24px;}
    .footer-top{grid-template-columns:1fr 1fr;gap:28px;padding:44px 0 32px;}
  }
  @media (max-width:767px){
    .container{padding:0 20px;}
    .brand-text .b-main{font-size:17px;}
    .brand-text .b-sub{font-size:11px;}
    .nav-actions .btn-primary{height:40px;padding:0 14px;font-size:13.5px;}
    h1{font-size:28px;}
    .page-head{padding:32px 0 36px;}
    .points-grid{grid-template-columns:1fr;}
    .cta-band{padding:28px;flex-direction:column;align-items:flex-start;}
    .cta-band h2{font-size:22px;}
    .cta-actions{width:100%;}
    .cta-actions .btn{flex:1;}
    .footer-top{grid-template-columns:1fr;}
    .footer-bottom{flex-direction:column;gap:8px;}
    .rel-scroll{grid-auto-columns:minmax(240px,1fr);}
  }
  @media (max-width:520px){
    .head-stat{left:10px;right:10px;bottom:10px;padding:10px;}
    .head-stat .stat-num{font-size:16px;}
    .head-stat .stat-label{font-size:11px;}
    .tab{height:38px;padding:0 14px;font-size:13.5px;}
  }

/* roulang page: category2 */
:root{
  --brand-700:#1E4E8C;
  --brand-900:#143A6B;
  --brand-500:#2F7FD1;
  --brand-100:#E8F0FA;
  --accent:#F2A03D;
  --bg:#F6F8FB;
  --surface:#FFFFFF;
  --line:#E3E9F2;
  --ink:#16233A;
  --ink-soft:#5A6B85;
  --radius-card:14px;
  --radius-img:12px;
  --radius-btn:10px;
  --shadow-card:0 1px 2px rgba(22,35,58,.05), 0 10px 24px -12px rgba(22,35,58,.18);
  --shadow-card-hover:0 2px 4px rgba(22,35,58,.06), 0 18px 36px -16px rgba(22,35,58,.24);
}
*{box-sizing:border-box;}
html{scroll-behavior:smooth;}
body{
  margin:0;
  background:var(--bg);
  color:var(--ink);
  font-family:-apple-system,BlinkMacSystemFont,"PingFang SC","Microsoft YaHei","Noto Sans SC",sans-serif;
  font-size:16px;
  line-height:1.8;
  -webkit-font-smoothing:antialiased;
}
img{max-width:100%;display:block;}
a{color:var(--brand-500);text-decoration:none;transition:color .2s ease;}
a:hover{color:var(--brand-700);}
button{font-family:inherit;}
h1,h2,h3,h4{margin:0;color:var(--ink);letter-spacing:-0.5px;}
p{margin:0;}
.container{max-width:1200px;margin:0 auto;padding:0 24px;}
.section{padding:88px 0;}
.section-sm{padding:64px 0;}

/* ---------- 顶部导航 ---------- */
.site-header{
  position:sticky;top:0;z-index:100;
  background:#fff;
  border-bottom:1px solid var(--line);
  transition:box-shadow .25s ease;
}
.site-header.scrolled{box-shadow:0 8px 24px -18px rgba(22,35,58,.5);}
.nav-wrap{
  max-width:1200px;margin:0 auto;padding:0 24px;
  height:72px;display:flex;align-items:center;gap:28px;
}
.brand{display:flex;align-items:center;gap:11px;text-decoration:none;flex-shrink:0;}
.brand-mark{
  width:38px;height:38px;border-radius:11px;background:var(--brand-700);
  color:#fff;display:flex;align-items:center;justify-content:center;
  font-size:17px;font-weight:800;letter-spacing:0;
}
.brand-text{display:flex;flex-direction:column;line-height:1.2;}
.brand-name{font-size:20px;font-weight:800;color:var(--ink);letter-spacing:-0.5px;}
.brand-sub{font-size:12px;color:var(--ink-soft);font-weight:400;margin-top:2px;}
.nav-links{display:flex;align-items:center;gap:26px;margin-left:8px;}
.nav-link{
  position:relative;font-size:15px;color:var(--ink-soft);font-weight:500;
  padding:6px 2px;text-decoration:none;transition:color .2s ease;white-space:nowrap;
}
.nav-link::after{
  content:"";position:absolute;left:0;right:0;bottom:-2px;height:2px;
  background:var(--accent);border-radius:2px;transform:scaleX(0);
  transform-origin:left;transition:transform .22s ease;
}
.nav-link:hover{color:var(--brand-700);}
.nav-link:hover::after{transform:scaleX(1);}
.nav-link.active{color:var(--brand-700);font-weight:700;}
.nav-link.active::after{transform:scaleX(1);}
.nav-link.nav-pill{
  border:1px solid #C8D6E8;border-radius:999px;padding:8px 18px;color:var(--brand-700);
  font-weight:600;transition:all .2s ease;
}
.nav-link.nav-pill::after{display:none;}
.nav-link.nav-pill:hover{background:var(--brand-100);border-color:var(--brand-500);transform:translateY(-1px);}
.nav-actions{margin-left:auto;display:flex;align-items:center;gap:10px;}

/* ---------- 按钮 ---------- */
.btn{
  display:inline-flex;align-items:center;justify-content:center;gap:8px;
  height:44px;padding:0 20px;border-radius:var(--radius-btn);
  font-size:15px;font-weight:600;line-height:1;border:1px solid transparent;
  cursor:pointer;transition:all .2s ease;white-space:nowrap;text-decoration:none;
}
.btn-sm{height:40px;padding:0 18px;font-size:14px;}
.btn-primary{background:var(--brand-700);color:#fff;}
.btn-primary:hover{background:#17407A;color:#fff;transform:translateY(-1px);box-shadow:0 12px 22px -12px rgba(30,78,140,.75);}
.btn-primary:active{transform:translateY(0);box-shadow:none;}
.btn-ghost{background:#fff;border-color:#C8D6E8;color:var(--brand-700);}
.btn-ghost:hover{border-color:var(--brand-700);background:var(--brand-100);color:var(--brand-700);transform:translateY(-1px);}
.btn-ghost:active{transform:translateY(0);}
.btn:focus-visible{outline:2px solid var(--accent);outline-offset:2px;}
.btn-link{
  display:inline-flex;align-items:center;gap:6px;color:var(--brand-700);
  font-size:15px;font-weight:600;text-decoration:none;
}
.btn-link i{transition:transform .2s ease;font-size:13px;}
.btn-link:hover i{transform:translateX(3px);}
.btn-link:focus-visible{outline:2px solid var(--accent);outline-offset:3px;border-radius:4px;}

/* ---------- 移动端导航 ---------- */
.nav-toggle{
  display:none;margin-left:auto;width:44px;height:44px;border-radius:10px;
  border:1px solid var(--line);background:#fff;color:var(--brand-700);
  font-size:17px;align-items:center;justify-content:center;cursor:pointer;transition:all .2s ease;
}
.nav-toggle:hover{background:var(--brand-100);border-color:#C8D6E8;}
.nav-toggle:focus-visible{outline:2px solid var(--accent);outline-offset:2px;}
.mobile-drawer{
  display:none;padding:14px 24px 22px;border-top:1px solid var(--line);background:#fff;
}
.mobile-drawer.open{display:block;}
.m-link{
  display:block;padding:12px 4px;font-size:15px;color:var(--ink-soft);font-weight:500;
  border-bottom:1px solid var(--line);text-decoration:none;
}
.m-link.active{color:var(--brand-700);font-weight:700;}
.m-link:hover{color:var(--brand-700);}

/* ---------- 页头 ---------- */
.page-head{
  position:relative;background:var(--surface);
  border-bottom:1px solid var(--line);overflow:hidden;
}
.page-head::before{
  content:"";position:absolute;inset:0;pointer-events:none;
  background-image:radial-gradient(circle, rgba(30,78,140,.18) 1px, transparent 1px);
  background-size:22px 22px;opacity:.42;
}
.page-head-inner{position:relative;padding-top:52px;padding-bottom:52px;}
.breadcrumb{
  display:flex;align-items:center;gap:8px;font-size:13px;color:var(--ink-soft);
  margin-bottom:18px;flex-wrap:wrap;
}
.breadcrumb a{color:var(--ink-soft);text-decoration:none;}
.breadcrumb a:hover{color:var(--brand-700);}
.breadcrumb .sep{color:#B9C6D8;}
.breadcrumb .current{color:var(--brand-700);font-weight:600;}
.page-head h1{
  font-size:42px;line-height:1.25;font-weight:800;letter-spacing:-0.5px;
  margin-bottom:14px;
}
.page-head .lead{
  font-size:16px;line-height:1.8;color:var(--ink-soft);max-width:600px;
}
.head-card{
  background:var(--surface);border:1px solid var(--line);border-radius:20px;
  padding:24px;box-shadow:var(--shadow-card);
}
.head-card-title{
  font-size:13px;font-weight:700;color:var(--brand-700);
  letter-spacing:.04em;margin-bottom:14px;display:flex;align-items:center;gap:8px;
}
.head-card-title::before{
  content:"";width:6px;height:6px;border-radius:999px;background:var(--accent);display:inline-block;
}
.head-list{list-style:none;margin:0;padding:0;display:flex;flex-direction:column;}
.head-list li{
  display:flex;justify-content:space-between;gap:14px;align-items:baseline;
  padding:12px 0;border-bottom:1px dashed var(--line);font-size:14px;
}
.head-list li:last-child{border-bottom:0;padding-bottom:0;}
.head-list span{color:var(--ink-soft);flex-shrink:0;}
.head-list strong{color:var(--ink);font-weight:600;text-align:right;font-variant-numeric:tabular-nums;}

/* ---------- 分类切换标签 ---------- */
.tabs{display:flex;flex-wrap:wrap;gap:10px;margin-top:26px;}
.tab{
  display:inline-flex;align-items:center;height:40px;padding:0 20px;
  border-radius:999px;border:1px solid #C8D6E8;background:#fff;
  font-size:14.5px;font-weight:600;color:var(--brand-700);text-decoration:none;
  transition:all .2s ease;
}
.tab:hover{background:var(--brand-100);border-color:var(--brand-500);transform:translateY(-1px);}
.tab.current{background:var(--brand-700);border-color:var(--brand-700);color:#fff;}
.tab.current:hover{background:#17407A;transform:none;}
.tab:focus-visible{outline:2px solid var(--accent);outline-offset:2px;}

/* ---------- 区块标题 ---------- */
.section-head{
  display:flex;align-items:flex-end;justify-content:space-between;
  gap:24px;margin-bottom:40px;flex-wrap:wrap;
}
.section-title{font-size:30px;line-height:1.35;font-weight:800;}
.section-desc{font-size:15px;color:var(--ink-soft);margin-top:10px;max-width:620px;}
.eyebrow{
  display:inline-flex;align-items:center;gap:8px;
  font-size:12.5px;font-weight:700;color:var(--brand-700);
  background:var(--brand-100);border-radius:999px;padding:5px 14px;margin-bottom:14px;
}
.eyebrow::before{
  content:"";width:6px;height:6px;border-radius:999px;background:var(--accent);
}

/* ---------- 编号说明清单 ---------- */
.figure{
  border-radius:var(--radius-img);overflow:hidden;border:1px solid var(--line);
  background:var(--brand-100);aspect-ratio:16/9;box-shadow:var(--shadow-card);
}
.figure img{width:100%;height:100%;object-fit:cover;}
.mini-card{
  margin-top:16px;background:var(--surface);border:1px solid var(--line);
  border-radius:var(--radius-card);padding:18px 20px;box-shadow:var(--shadow-card);
}
.mini-card h4{font-size:14px;font-weight:700;color:var(--brand-700);margin-bottom:8px;}
.mini-card p{font-size:13.5px;line-height:1.75;color:var(--ink-soft);}
.steps{position:relative;list-style:none;margin:0;padding:0;display:flex;flex-direction:column;gap:16px;}
.step{position:relative;display:flex;gap:16px;}
.step::before{
  content:"";position:absolute;left:21px;top:46px;bottom:-16px;width:1px;background:var(--line);
}
.step:last-child::before{display:none;}
.step-no{
  flex:0 0 44px;width:44px;height:44px;border-radius:999px;
  background:#fff;border:1px solid var(--line);color:var(--brand-700);
  display:flex;align-items:center;justify-content:center;
  font-size:15px;font-weight:700;font-variant-numeric:tabular-nums;
  box-shadow:var(--shadow-card);z-index:1;transition:all .2s ease;
}
.step:hover .step-no{border-color:var(--accent);color:var(--brand-900);}
.step-body{
  flex:1;background:var(--surface);border:1px solid var(--line);
  border-radius:var(--radius-card);padding:20px 22px;box-shadow:var(--shadow-card);
  transition:all .2s ease;
}
.step:hover .step-body{box-shadow:var(--shadow-card-hover);border-color:#CBDCEE;transform:translateY(-2px);}
.step-body h3{font-size:19px;line-height:1.5;font-weight:700;margin-bottom:8px;}
.step-body p{font-size:15px;line-height:1.8;color:var(--ink-soft);}
.tags{display:flex;flex-wrap:wrap;gap:8px;margin-top:14px;}
.tag{
  display:inline-flex;align-items:center;gap:6px;
  background:var(--brand-100);color:var(--brand-700);
  border-radius:999px;padding:4px 12px;font-size:12.5px;font-weight:600;
}
.tag.dot::before{
  content:"";width:6px;height:6px;border-radius:999px;background:var(--accent);
}

/* ---------- 适用范围 ---------- */
.scope-wrap{
  background:var(--surface);border:1px solid var(--line);border-radius:20px;
  padding:40px;box-shadow:var(--shadow-card);
}
.scope-list{list-style:none;margin:0;padding:0;display:flex;flex-direction:column;gap:0;}
.scope-item{
  display:flex;gap:14px;padding:18px 0;border-bottom:1px solid var(--line);
}
.scope-item:first-child{padding-top:0;}
.scope-item:last-child{border-bottom:0;padding-bottom:0;}
.scope-ico{
  flex:0 0 34px;width:34px;height:34px;border-radius:10px;background:var(--brand-100);
  color:var(--brand-700);display:flex;align-items:center;justify-content:center;font-size:14px;
}
.scope-item h4{font-size:16px;font-weight:700;margin-bottom:4px;}
.scope-item p{font-size:14.5px;line-height:1.8;color:var(--ink-soft);}
.tip-card{
  background:var(--brand-100);border:1px solid #D3E3F5;border-radius:20px;padding:28px;
}
.tip-card h4{font-size:18px;font-weight:800;color:var(--brand-900);margin-bottom:6px;}
.tip-card .tip-sub{font-size:13.5px;color:var(--ink-soft);margin-bottom:18px;}
.tip-steps{list-style:none;margin:0;padding:0;display:flex;flex-direction:column;gap:14px;}
.tip-steps li{display:flex;gap:12px;font-size:14.5px;line-height:1.75;color:var(--ink);}
.tip-num{
  flex:0 0 24px;width:24px;height:24px;border-radius:999px;background:#fff;
  color:var(--brand-700);font-size:12.5px;font-weight:700;
  display:flex;align-items:center;justify-content:center;
  border:1px solid #C8D6E8;margin-top:3px;font-variant-numeric:tabular-nums;
}

/* ---------- FAQ ---------- */
.faq-wrap{max-width:900px;margin:0 auto;}
.faq-item{
  background:var(--surface);border:1px solid var(--line);border-radius:var(--radius-card);
  margin-bottom:12px;overflow:hidden;transition:all .2s ease;box-shadow:var(--shadow-card);
}
.faq-item:hover{border-color:#CBDCEE;}
.faq-item summary{
  list-style:none;cursor:pointer;padding:20px 24px;font-size:16px;font-weight:600;
  color:var(--ink);display:flex;align-items:center;justify-content:space-between;gap:16px;
  transition:color .2s ease;
}
.faq-item summary::-webkit-details-marker{display:none;}
.faq-item summary:hover{color:var(--brand-700);}
.faq-item summary:focus-visible{outline:2px solid var(--accent);outline-offset:-4px;}
.faq-item summary .faq-arrow{
  flex-shrink:0;color:var(--brand-500);font-size:13px;transition:transform .25s ease;
}
.faq-item[open] summary{color:var(--brand-700);}
.faq-item[open] summary .faq-arrow{transform:rotate(180deg);}
.faq-item[open]{border-left:3px solid var(--accent);background:#FBFDFF;}
.faq-answer{
  padding:0 24px 22px;font-size:15px;line-height:1.85;color:var(--ink-soft);
}

/* ---------- 相关标签条 ---------- */
.rel-bar{
  display:flex;align-items:center;gap:14px;flex-wrap:wrap;
  padding:22px 26px;background:var(--surface);border:1px solid var(--line);
  border-radius:var(--radius-card);box-shadow:var(--shadow-card);
}
.rel-bar .rel-label{font-size:14px;font-weight:700;color:var(--ink);}
.rel-pill{
  display:inline-flex;align-items:center;height:34px;padding:0 16px;border-radius:999px;
  background:var(--brand-100);color:var(--brand-700);font-size:13.5px;font-weight:600;
  text-decoration:none;transition:all .2s ease;
}
.rel-pill:hover{background:var(--brand-700);color:#fff;transform:translateY(-1px);}

/* ---------- CTA ---------- */
.cta-band{
  background:var(--brand-100);border:1px solid #D3E3F5;border-radius:20px;
  padding:44px;display:flex;align-items:center;justify-content:space-between;
  gap:32px;flex-wrap:wrap;
}
.cta-band h2{font-size:26px;line-height:1.4;font-weight:800;color:var(--brand-900);}
.cta-band p{font-size:14.5px;color:var(--ink-soft);margin-top:8px;max-width:520px;}
.cta-actions{display:flex;gap:12px;flex-wrap:wrap;}

/* ---------- 页脚 ---------- */
.site-footer{background:var(--brand-900);color:#C9D8EA;margin-top:0;}
.site-footer .container{padding-top:64px;padding-bottom:0;}
.footer-top{
  display:grid;grid-template-columns:1.6fr 1fr 1fr 1.25fr;gap:40px;padding-bottom:44px;
}
.fb-logo{font-size:18px;font-weight:800;color:#fff;margin-bottom:14px;letter-spacing:-0.3px;}
.footer-brand p{font-size:14px;line-height:1.8;color:#9EB4CE;max-width:320px;}
.footer-col h4{font-size:15px;font-weight:700;color:#fff;margin-bottom:16px;}
.footer-col ul{list-style:none;padding:0;margin:0;display:flex;flex-direction:column;gap:10px;}
.footer-col a{color:#9EB4CE;font-size:14px;text-decoration:none;transition:color .2s ease;}
.footer-col a:hover{color:#7FB4EE;}
.footer-contact li{display:flex;gap:10px;font-size:14px;color:#9EB4CE;line-height:1.7;}
.footer-contact i{color:var(--accent);margin-top:5px;font-size:12px;flex-shrink:0;}
.footer-bottom{
  border-top:1px solid rgba(255,255,255,.12);padding:20px 0;
  display:flex;justify-content:space-between;gap:12px;flex-wrap:wrap;
  font-size:12.5px;color:#8CA3BF;
}

/* ---------- 响应式 ---------- */
@media (max-width:1023px){
  .nav-links,.nav-actions{display:none;}
  .nav-toggle{display:flex;}
  .nav-wrap{height:64px;}
  .page-head h1{font-size:32px;}
  .section{padding:64px 0;}
  .section-sm{padding:48px 0;}
  .footer-top{grid-template-columns:1fr 1fr;gap:32px;}
  .cta-band{padding:32px;}
  .scope-wrap{padding:28px;}
}
@media (max-width:767px){
  .container{padding:0 20px;}
  .nav-wrap{padding:0 20px;}
  .page-head-inner{padding-top:36px;padding-bottom:40px;}
  .page-head h1{font-size:30px;}
  .page-head .lead{font-size:15px;}
  .section-title{font-size:24px;}
  .section{padding:56px 0;}
  .section-sm{padding:44px 0;}
  .step{gap:12px;}
  .step-no{flex:0 0 38px;width:38px;height:38px;font-size:14px;}
  .step::before{left:18px;top:40px;}
  .step-body{padding:18px;}
  .step-body h3{font-size:17px;}
  .faq-item summary{padding:16px 18px;font-size:15px;}
  .faq-answer{padding:0 18px 18px;font-size:14.5px;}
  .head-card{padding:20px;}
  .cta-band{padding:26px;}
  .cta-band h2{font-size:22px;}
  .cta-actions{width:100%;}
  .cta-actions .btn{flex:1;}
  .footer-top{grid-template-columns:1fr;gap:28px;}
  .footer-bottom{flex-direction:column;gap:6px;}
  .scope-wrap{padding:22px;}
  .rel-bar{padding:18px 20px;}
}
@media (max-width:520px){
  .brand-name{font-size:17px;}
  .brand-sub{font-size:11px;}
  .tabs{gap:8px;}
  .tab{height:36px;padding:0 14px;font-size:13.5px;}
  .step::before{display:none;}
}