/* roulang page: index */
:root{
  --c-primary:#1F4E8C;
  --c-primary-deep:#163A6B;
  --c-primary-tint:#EAF1FA;
  --c-accent:#2FA69A;
  --c-star:#E4B34A;
  --c-ink:#16203A;
  --c-text:#2A3448;
  --c-muted:#6B7488;
  --c-line:#E4E9F2;
  --c-bg:#FFFFFF;
  --c-bg-alt:#F6F8FC;
  --c-danger:#D9483B;
  --sh-1:0 1px 2px rgba(22,32,58,.05), 0 10px 24px -14px rgba(22,32,58,.18);
  --sh-2:0 2px 4px rgba(22,32,58,.06), 0 18px 40px -18px rgba(22,32,58,.22);
  --r-card:14px;
  --r-btn:10px;
}
*,*::before,*::after{box-sizing:border-box}
html{-webkit-text-size-adjust:100%}
body{
  margin:0;
  font-family:"PingFang SC","Hiragino Sans GB","Microsoft YaHei",system-ui,-apple-system,"Segoe UI",sans-serif;
  font-size:16px;
  line-height:1.9;
  color:var(--c-text);
  background:var(--c-bg);
  -webkit-font-smoothing:antialiased;
}
img{max-width:100%;display:block}
a{color:inherit;text-decoration:none}
button,input,select,textarea{font:inherit;color:inherit}
h1,h2,h3,h4{margin:0;color:var(--c-ink);font-weight:700;line-height:1.3}
p{margin:0}
ul{margin:0;padding:0;list-style:none}
.num{font-variant-numeric:tabular-nums;letter-spacing:-0.01em}

.container-page{width:100%;max-width:1200px;margin:0 auto;padding:0 24px}
.section{padding:80px 0}
.section-tight{padding:56px 0}
.no-scrollbar::-webkit-scrollbar{display:none}
.no-scrollbar{-ms-overflow-style:none;scrollbar-width:none}

/* ---------- header ---------- */
.site-header{position:sticky;top:0;z-index:50;background:#fff;box-shadow:0 1px 0 var(--c-line)}
.topbar{height:64px;border-bottom:1px solid var(--c-line);background:#fff}
.topbar-inner{height:64px;display:flex;align-items:center;gap:20px}
.brand{display:flex;align-items:center;gap:10px;flex:none}
.brand-mark{width:20px;height:20px;border-radius:6px;background:var(--c-primary);position:relative}
.brand-mark::after{content:"";position:absolute;right:-3px;top:-3px;width:7px;height:7px;border-radius:50%;background:var(--c-star)}
.brand-text{font-size:19px;font-weight:700;color:var(--c-ink);letter-spacing:.2px}
.search-wrap{flex:1;max-width:420px;display:none;align-items:center;gap:8px;height:40px;padding:0 14px;background:var(--c-bg-alt);border:1px solid var(--c-line);border-radius:10px;transition:border-color .18s ease, box-shadow .18s ease}
.search-wrap i{color:var(--c-muted);font-size:14px}
.search-wrap input{flex:1;border:0;background:transparent;outline:none;font-size:14px}
.search-wrap input::placeholder{color:var(--c-muted)}
.search-wrap:focus-within{border-color:var(--c-primary);box-shadow:0 0 0 2px var(--c-primary-tint)}
.topbar-actions{margin-left:auto;display:flex;align-items:center;gap:12px}
.menu-toggle{display:inline-flex;align-items:center;justify-content:center;width:44px;height:44px;border-radius:10px;border:1px solid var(--c-line);background:#fff;color:var(--c-ink);cursor:pointer;transition:background .18s ease,border-color .18s ease}
.menu-toggle:hover{background:var(--c-primary-tint);border-color:rgba(31,78,140,.28)}
.channelbar{background:var(--c-bg-alt);border-bottom:1px solid var(--c-line)}
.channel-inner{display:flex;align-items:center;gap:10px;height:46px;overflow-x:auto;white-space:nowrap;scrollbar-width:none}
.channel-inner::-webkit-scrollbar{display:none}
.chan{display:inline-flex;align-items:center;height:32px;padding:0 16px;border-radius:999px;font-size:14px;color:var(--c-muted);background:transparent;transition:background .18s ease,color .18s ease}
.chan:hover{background:var(--c-primary-tint);color:var(--c-primary)}
.chan.is-active{background:var(--c-primary);color:#fff;font-weight:600}
.mobile-panel{display:none;padding:8px 0 16px;border-bottom:1px solid var(--c-line);background:#fff}
.mobile-panel.open{display:block}
.mobile-panel a{display:block;padding:12px 0;font-size:15px;color:var(--c-text);border-bottom:1px solid var(--c-line)}
.mobile-panel a:last-child{border-bottom:0}

/* ---------- buttons ---------- */
.btn{display:inline-flex;align-items:center;justify-content:center;gap:8px;min-height:44px;padding:12px 26px;border-radius:var(--r-btn);font-size:15px;font-weight:600;border:1px solid transparent;cursor:pointer;transition:background .18s ease,color .18s ease,border-color .18s ease,transform .18s ease,box-shadow .18s ease}
.btn-primary{background:var(--c-primary);color:#fff;box-shadow:0 0 0 rgba(31,78,140,0)}
.btn-primary:hover{background:var(--c-primary-deep);transform:translateY(-1px);box-shadow:0 10px 22px -12px rgba(22,58,107,.65)}
.btn-primary:active{transform:translateY(0)}
.btn-ghost{background:transparent;color:var(--c-primary);border-color:var(--c-primary)}
.btn-ghost:hover{background:var(--c-primary-tint);transform:translateY(-1px)}
.btn-ghost:active{transform:translateY(0)}
.btn:focus-visible{outline:2px solid var(--c-primary);outline-offset:2px}
.link-cta{display:inline-flex;align-items:center;gap:6px;color:var(--c-primary);font-size:14px;font-weight:600}
.link-cta i{transition:transform .18s ease}
.link-cta:hover i{transform:translateX(3px)}
.link-cta:hover{text-decoration:underline}

.pill{display:inline-flex;align-items:center;gap:6px;height:26px;padding:0 12px;border-radius:999px;font-size:12.5px;font-weight:600;background:var(--c-primary-tint);color:var(--c-primary)}
.pill-accent{background:rgba(47,166,154,.12);color:#1E7A70}
.pill-star{background:rgba(228,179,74,.16);color:#8A6614}
.eyebrow{display:inline-flex;align-items:center;gap:8px;font-size:13px;font-weight:600;color:var(--c-primary);letter-spacing:.04em}

/* ---------- card ---------- */
.card{background:#fff;border:1px solid var(--c-line);border-radius:var(--r-card);padding:24px;box-shadow:var(--sh-1);transition:transform .18s ease,border-color .18s ease,box-shadow .18s ease}
.card:hover{transform:translateY(-2px);border-color:rgba(31,78,140,.28);box-shadow:0 2px 4px rgba(22,32,58,.06),0 18px 40px -16px rgba(22,32,58,.26)}
.card-soft{background:var(--c-bg-alt)}
.card-dash{border:1px dashed #C6D2E4;background:var(--c-bg-alt);box-shadow:none}
.card-dash:hover{transform:translateY(-2px);border-color:var(--c-primary);box-shadow:var(--sh-1)}
.idx-num{font-size:13px;font-weight:700;color:var(--c-muted);letter-spacing:.08em}
.icon-box{width:40px;height:40px;border-radius:10px;background:var(--c-primary-tint);color:var(--c-primary);display:inline-flex;align-items:center;justify-content:center;font-size:17px}

/* ---------- hero ---------- */
.hero{position:relative;padding:64px 0 72px;background:#fff;overflow:hidden}
.hero::before{content:"";position:absolute;inset:0;pointer-events:none;
  background-image:
    radial-gradient(circle at 8% 18%, rgba(31,78,140,.06) 0 2px, transparent 2px),
    radial-gradient(circle at 24% 72%, rgba(31,78,140,.05) 0 2px, transparent 2px),
    radial-gradient(circle at 62% 12%, rgba(47,166,154,.05) 0 2px, transparent 2px),
    radial-gradient(circle at 88% 58%, rgba(31,78,140,.05) 0 2px, transparent 2px);
  background-size:auto;
}
.hero-inner{position:relative;display:grid;grid-template-columns:7fr 5fr;gap:44px;align-items:center}
.hero h1{font-size:42px;line-height:1.26;margin:18px 0 18px;letter-spacing:-.4px}
.hero-sub{font-size:17px;color:var(--c-text);max-width:560px;line-height:1.9}
.hero-cta{display:flex;flex-wrap:wrap;gap:14px;margin:28px 0 26px}
.trust-row{display:flex;flex-wrap:wrap;gap:10px 26px}
.trust-item{display:flex;align-items:center;gap:8px;font-size:14px;color:var(--c-text)}
.trust-item i{color:var(--c-accent);font-size:13px}
.hero-media{position:relative}
.hero-media img{width:100%;aspect-ratio:4/3;object-fit:cover;border-radius:16px;box-shadow:var(--sh-1);background:var(--c-bg-alt)}
.hero-float{position:absolute;left:-16px;bottom:-20px;background:#fff;border:1px solid var(--c-line);border-radius:12px;box-shadow:var(--sh-1);padding:14px 18px;min-width:150px}
.hero-float .fig{font-size:26px;font-weight:700;color:var(--c-primary);line-height:1.2}
.hero-float .lbl{font-size:12.5px;color:var(--c-muted);margin-top:2px}

/* ---------- stats ---------- */
.stats{display:grid;grid-template-columns:repeat(4,1fr);background:#fff;border:1px solid var(--c-line);border-radius:var(--r-card);box-shadow:var(--sh-1);overflow:hidden}
.stat{padding:28px 24px;border-right:1px solid var(--c-line)}
.stat:last-child{border-right:0}
.stat .fig{font-size:38px;font-weight:700;color:var(--c-ink);line-height:1.1}
.stat .fig .unit{font-size:16px;font-weight:600;margin-left:4px;color:var(--c-muted)}
.stat .name{font-size:14px;font-weight:600;color:var(--c-ink);margin-top:10px}
.stat .desc{font-size:12.5px;color:var(--c-muted);margin-top:4px}
.fig-star{color:var(--c-star)}

/* ---------- compare ---------- */
.compare{display:flex;align-items:flex-start;justify-content:space-between;margin-bottom:26px;gap:16px}
.compare-row{display:grid;grid-template-columns:130px 1fr;gap:20px;align-items:center;padding:18px 0;border-bottom:1px solid var(--c-line)}
.compare-row:last-child{border-bottom:0}
.compare-label{font-size:14px;font-weight:600;color:var(--c-ink)}
.compare-bars{display:flex;flex-direction:column;gap:10px}
.bar-line{display:grid;grid-template-columns:104px 1fr 92px;gap:12px;align-items:center}
.bar-name{font-size:12.5px;color:var(--c-muted)}
.bar-track{height:10px;border-radius:999px;background:#EEF2F8;overflow:hidden}
.bar-fill{display:block;height:10px;border-radius:999px;transition:transform .18s ease}
.bar-before{background:#D8DEE9}
.bar-after{background:var(--c-primary)}
.bar-accent{background:var(--c-accent)}
.bar-line:hover .bar-fill{transform:translateY(-1px)}
.bar-val{font-size:13px;font-weight:600;color:var(--c-ink);text-align:right}

/* ---------- news ---------- */
.sec-head{display:flex;align-items:flex-end;justify-content:space-between;gap:20px;margin-bottom:32px}
.sec-head h2{font-size:29px;margin-top:10px}
.sec-head .sub{font-size:14.5px;color:var(--c-muted);margin-top:8px;max-width:640px}
.news-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:24px}
.news-card{display:flex;flex-direction:column;background:#fff;border:1px solid var(--c-line);border-radius:var(--r-card);overflow:hidden;box-shadow:var(--sh-1);transition:transform .18s ease,border-color .18s ease,box-shadow .18s ease}
.news-card:hover{transform:translateY(-2px);border-color:rgba(31,78,140,.28);box-shadow:0 2px 4px rgba(22,32,58,.06),0 18px 40px -16px rgba(22,32,58,.26)}
.news-thumb{position:relative;aspect-ratio:16/9;background:var(--c-bg-alt);overflow:hidden}
.news-thumb img{width:100%;height:100%;object-fit:cover}
.news-thumb .pill{position:absolute;left:12px;top:12px;background:#fff;color:var(--c-primary)}
.news-body{padding:20px;display:flex;flex-direction:column;flex:1}
.news-body h3{font-size:17px;line-height:1.5;margin-bottom:10px;display:-webkit-box;-webkit-line-clamp:2;-webkit-box-orient:vertical;overflow:hidden}
.news-body p{font-size:14px;color:var(--c-muted);line-height:1.75;display:-webkit-box;-webkit-line-clamp:2;-webkit-box-orient:vertical;overflow:hidden}
.news-foot{margin-top:auto;padding-top:16px;display:flex;align-items:center;justify-content:space-between;font-size:13px;color:var(--c-muted)}
.news-foot i{color:var(--c-primary);transition:transform .18s ease}
.news-card:hover .news-foot i{transform:translateX(3px)}
.empty-state{grid-column:1/-1;padding:24px;border:1px solid var(--c-line);border-radius:var(--r-card);background:var(--c-bg-alt);text-align:center}
.empty-figure{height:160px;border:1px dashed #C6D2E4;border-radius:12px;display:flex;align-items:center;justify-content:center;color:#A9B4C6;font-size:28px;background:#fff}
.empty-state p{font-size:14px;color:var(--c-muted);margin-top:14px}
.empty-state .btn{margin-top:14px}

/* ---------- faq ---------- */
.faq-item{border:1px solid var(--c-line);border-radius:12px;background:#fff;margin-bottom:12px;overflow:hidden;transition:border-color .18s ease,background .18s ease}
.faq-item summary{list-style:none;cursor:pointer;padding:18px 20px;font-size:16px;font-weight:600;color:var(--c-ink);display:flex;align-items:center;justify-content:space-between;gap:16px;min-height:64px}
.faq-item summary::-webkit-details-marker{display:none}
.faq-item summary i{color:var(--c-muted);transition:transform .18s ease,color .18s ease;font-size:14px}
.faq-item[open]{border-left:3px solid var(--c-primary);background:#F8FAFE}
.faq-item[open] summary i{transform:rotate(90deg);color:var(--c-primary)}
.faq-item .answer{padding:0 20px 20px;font-size:15px;line-height:1.85;color:var(--c-text)}
.faq-side{background:var(--c-bg-alt);border:1px solid var(--c-line);border-radius:var(--r-card);padding:24px}

/* ---------- form ---------- */
.form-card{background:#fff;border:1px solid var(--c-line);border-radius:var(--r-card);padding:28px;box-shadow:var(--sh-1)}
.field{margin-bottom:16px}
.field label{display:block;font-size:13.5px;font-weight:600;color:var(--c-ink);margin-bottom:6px}
.field input,.field select,.field textarea{width:100%;min-height:44px;padding:11px 14px;border:1px solid var(--c-line);border-radius:10px;background:#fff;font-size:14.5px;outline:none;transition:border-color .18s ease,box-shadow .18s ease;color:var(--c-text)}
.field textarea{min-height:110px;resize:vertical;line-height:1.7}
.field input::placeholder,.field textarea::placeholder{color:var(--c-muted)}
.field input:focus,.field select:focus,.field textarea:focus{border-color:var(--c-primary);box-shadow:0 0 0 2px var(--c-primary-tint)}
.field select{appearance:none;background-image:url("data:image/svg+xml;charset=utf8,%3Csvg xmlns='http://www.w3.org/2000/svg' width='14' height='14' viewBox='0 0 24 24' fill='none' stroke='%236B7488' stroke-width='2.2' stroke-linecap='round'%3E%3Cpath d='M6 9l6 6 6-6'/%3E%3C/svg%3E");background-repeat:no-repeat;background-position:right 14px center}
.check-row{display:flex;align-items:flex-start;gap:10px;font-size:13.5px;color:var(--c-muted);line-height:1.7}
.check-row input{width:18px;height:18px;margin-top:3px;accent-color:var(--c-primary);flex:none}
.form-note{font-size:12.5px;color:var(--c-muted);margin-top:12px}
.form-ok{display:none;margin-top:14px;font-size:14px;color:#1E7A70}
.form-ok.show{display:block}
.contact-list li{display:flex;align-items:flex-start;gap:12px;padding:10px 0;font-size:14.5px;color:var(--c-text)}
.contact-list i{color:var(--c-primary);margin-top:5px;font-size:14px}

/* ---------- cta band ---------- */
.cta-band{position:relative;border-radius:18px;overflow:hidden;background:#14264A}
.cta-band img{position:absolute;inset:0;width:100%;height:100%;object-fit:cover;opacity:.42}
.cta-band .inner{position:relative;padding:52px 44px;display:flex;align-items:center;justify-content:space-between;gap:28px;flex-wrap:wrap}
.cta-band h2{color:#fff;font-size:28px}
.cta-band p{color:#C9D4E8;font-size:15px;margin-top:10px;max-width:560px}
.cta-band .btn-primary{background:#fff;color:#14264A}
.cta-band .btn-primary:hover{background:#EAF1FA;color:#163A6B}

/* ---------- footer ---------- */
.site-footer{background:#14264A;color:#C9D4E8;margin-top:0}
.footer-top{display:grid;grid-template-columns:4fr 2.5fr 2.5fr 3fr;gap:40px;padding:64px 0 44px}
.footer-brand .brand-text{color:#fff}
.footer-brand p{font-size:13.8px;line-height:1.9;color:#A9B8D4;margin-top:14px}
.footer-brand .mail{font-size:13.8px;color:#C9D4E8;margin-top:12px}
.footer-col h4{color:#fff;font-size:15px;font-weight:600;margin-bottom:16px}
.footer-col a{display:block;font-size:13.8px;color:#A9B8D4;padding:5px 0;transition:color .18s ease}
.footer-col a:hover{color:#fff}
.footer-sub input{width:100%;min-height:44px;padding:11px 14px;border-radius:10px;border:1px solid rgba(255,255,255,.18);background:rgba(255,255,255,.06);color:#fff;outline:none;font-size:14px;transition:border-color .18s ease}
.footer-sub input::placeholder{color:#8E9DBC}
.footer-sub input:focus{border-color:#7FA3D8}
.footer-sub .btn{margin-top:12px;width:100%;background:#fff;color:#14264A}
.footer-sub .btn:hover{background:#EAF1FA;color:#163A6B}
.footer-bottom{border-top:1px solid rgba(255,255,255,.12);padding:22px 0;display:flex;flex-wrap:wrap;gap:12px 24px;align-items:center;justify-content:space-between;font-size:13px;color:#8E9DBC}
.footer-bottom a{color:#A9B8D4}
.footer-bottom a:hover{color:#fff}

@media (min-width:1024px){
  .search-wrap{display:flex}
  .menu-toggle{display:none}
}
@media (max-width:1023px){
  .hero-inner{grid-template-columns:1fr;gap:36px}
  .hero-media{order:-1}
  .news-grid{grid-template-columns:repeat(2,1fr)}
  .stats{grid-template-columns:repeat(2,1fr)}
  .stat{border-right:1px solid var(--c-line);border-bottom:1px solid var(--c-line)}
  .stat:nth-child(2n){border-right:0}
  .stat:nth-child(n+3){border-bottom:0}
  .footer-top{grid-template-columns:1fr 1fr;gap:32px}
}
@media (max-width:768px){
  .container-page{padding:0 16px}
  .section{padding:48px 0}
  .section-tight{padding:40px 0}
  .hero{padding:36px 0 48px}
  .hero h1{font-size:28px;margin:14px 0 14px}
  .hero-sub{font-size:15.5px}
  .hero-media img{aspect-ratio:16/9;max-height:220px}
  .hero-float{left:12px;bottom:-16px;padding:10px 14px;min-width:0}
  .hero-float .fig{font-size:20px}
  .hero-cta{gap:10px}
  .hero-cta .btn{flex:1 1 100%}
  .sec-head{flex-direction:column;align-items:flex-start;gap:12px}
  .sec-head h2{font-size:22px}
  .news-grid{grid-template-columns:1fr}
  .stats{grid-template-columns:1fr}
  .stat{border-right:0;border-bottom:1px solid var(--c-line)}
  .stat:last-child{border-bottom:0}
  .compare-row{grid-template-columns:1fr;gap:10px}
  .bar-line{grid-template-columns:88px 1fr 78px;gap:10px}
  .cta-band .inner{padding:36px 22px}
  .cta-band h2{font-size:22px}
  .footer-top{grid-template-columns:1fr;padding:44px 0 32px;gap:28px}
  .form-card{padding:20px}
  .card{padding:20px}
}
@media (max-width:520px){
  .brand-text{font-size:17px}
  .btn{padding:12px 18px;font-size:14.5px}
  .bar-name{font-size:12px}
}

/* roulang page: article */
:root{
    --c-primary:#1F4E8C;
    --c-primary-deep:#163A6B;
    --c-primary-tint:#EAF1FA;
    --c-accent:#2FA69A;
    --c-star:#E4B34A;
    --c-ink:#16203A;
    --c-text:#2A3448;
    --c-muted:#6B7488;
    --c-line:#E4E9F2;
    --c-bg:#FFFFFF;
    --c-bg-alt:#F6F8FC;
    --c-danger:#D9483B;
    --c-footer:#14264A;
    --c-footer-text:#C9D4E8;
    --sh-1:0 1px 2px rgba(22,32,58,.05), 0 10px 24px -14px rgba(22,32,58,.18);
    --sh-2:0 2px 4px rgba(22,32,58,.06), 0 18px 34px -14px rgba(22,32,58,.24);
    --r-sm:10px;
    --r-md:14px;
    --r-lg:16px;
    --sp-section:80px;
  }
  *,*::before,*::after{box-sizing:border-box;}
  html{-webkit-text-size-adjust:100%;scroll-behavior:smooth;}
  body{
    margin:0;
    font-family:"PingFang SC","Hiragino Sans GB","Microsoft YaHei",system-ui,-apple-system,"Segoe UI",sans-serif;
    font-size:16px;
    line-height:1.75;
    color:var(--c-text);
    background:var(--c-bg);
    -webkit-font-smoothing:antialiased;
  }
  h1,h2,h3,h4{margin:0;color:var(--c-ink);font-weight:700;line-height:1.35;}
  p{margin:0;}
  a{color:inherit;text-decoration:none;}
  img{max-width:100%;display:block;border:0;}
  button,input,select,textarea{font:inherit;color:inherit;}
  button{cursor:pointer;background:none;border:0;}
  ul,ol{margin:0;padding:0;list-style:none;}
  .num{font-variant-numeric:tabular-nums;letter-spacing:-.01em;}
  .container-page{max-width:1200px;margin:0 auto;padding:0 24px;}
  .section{padding:var(--sp-section) 0;}
  .section-alt{background:var(--c-bg-alt);}
  .eyebrow{
    display:inline-flex;align-items:center;gap:8px;
    font-size:13px;font-weight:600;color:var(--c-primary);
    background:var(--c-primary-tint);border-radius:999px;padding:6px 14px;
  }
  .section-head{display:flex;align-items:flex-end;justify-content:space-between;gap:24px;margin-bottom:36px;flex-wrap:wrap;}
  .section-head h2{font-size:29px;}
  .section-head p{margin-top:10px;font-size:15px;color:var(--c-muted);max-width:660px;}
  .link-cta{color:var(--c-primary);font-size:15px;font-weight:600;display:inline-flex;align-items:center;gap:6px;transition:color .18s ease;}
  .link-cta i{transition:transform .18s ease;}
  .link-cta:hover{color:var(--c-primary-deep);text-decoration:underline;text-underline-offset:4px;}
  .link-cta:hover i{transform:translateX(3px);}

  /* 按钮 */
  .btn{
    display:inline-flex;align-items:center;justify-content:center;gap:8px;
    min-height:44px;padding:12px 24px;border-radius:var(--r-sm);
    font-size:15px;font-weight:600;line-height:1;
    border:1px solid transparent;transition:transform .18s ease,background .18s ease,color .18s ease,border-color .18s ease,box-shadow .18s ease;
  }
  .btn-primary{background:var(--c-primary);color:#fff;box-shadow:0 8px 18px -12px rgba(31,78,140,.9);}
  .btn-primary:hover{background:var(--c-primary-deep);transform:translateY(-1px);box-shadow:0 12px 24px -14px rgba(22,58,107,.95);}
  .btn-primary:active{transform:translateY(0);}
  .btn-ghost{background:transparent;color:var(--c-primary);border-color:var(--c-primary);}
  .btn-ghost:hover{background:var(--c-primary-tint);transform:translateY(-1px);}
  .btn-ghost:active{transform:translateY(0);}
  .btn:focus-visible,.link-cta:focus-visible,a:focus-visible,button:focus-visible,input:focus-visible,select:focus-visible,textarea:focus-visible{
    outline:2px solid var(--c-primary);outline-offset:2px;border-radius:8px;
  }

  /* 顶部导航 */
  .topbar{position:sticky;top:0;z-index:50;background:#fff;border-bottom:1px solid var(--c-line);}
  .topbar-inner{display:flex;align-items:center;gap:24px;height:64px;}
  .brand{display:inline-flex;align-items:center;gap:10px;flex:0 0 auto;}
  .brand-mark{
    width:20px;height:20px;border-radius:6px;
    background:var(--c-primary);position:relative;
    box-shadow:inset 0 0 0 4px #fff,0 0 0 1px rgba(31,78,140,.25);
  }
  .brand-mark::after{content:"";position:absolute;right:-3px;top:-3px;width:6px;height:6px;border-radius:50%;background:var(--c-star);}
  .brand-text{font-size:19px;font-weight:700;color:var(--c-ink);letter-spacing:.2px;}
  .search{display:flex;align-items:center;gap:10px;flex:1 1 auto;max-width:420px;height:40px;padding:0 14px;background:var(--c-bg-alt);border:1px solid var(--c-line);border-radius:var(--r-sm);transition:border-color .18s ease,box-shadow .18s ease,background .18s ease;}
  .search:focus-within{background:#fff;border-color:var(--c-primary);box-shadow:0 0 0 2px var(--c-primary-tint);}
  .search i{color:var(--c-muted);font-size:14px;}
  .search input{flex:1;border:0;background:transparent;outline:none;font-size:14px;height:100%;}
  .search input::placeholder{color:var(--c-muted);}
  .topbar-actions{display:flex;align-items:center;gap:12px;margin-left:auto;}
  .hamburger{display:none;width:44px;height:44px;border-radius:var(--r-sm);border:1px solid var(--c-line);align-items:center;justify-content:center;flex-direction:column;gap:4px;}
  .hamburger span{display:block;width:18px;height:2px;background:var(--c-ink);border-radius:2px;transition:transform .2s ease,opacity .2s ease;}
  .hamburger[aria-expanded="true"] span:nth-child(1){transform:translateY(6px) rotate(45deg);}
  .hamburger[aria-expanded="true"] span:nth-child(2){opacity:0;}
  .hamburger[aria-expanded="true"] span:nth-child(3){transform:translateY(-6px) rotate(-45deg);}

  .channelbar{background:var(--c-bg-alt);border-bottom:1px solid var(--c-line);}
  .channel-inner{display:flex;align-items:center;gap:8px;height:46px;overflow-x:auto;scrollbar-width:none;}
  .channel-inner::-webkit-scrollbar{display:none;}
  .chan{
    flex:0 0 auto;padding:8px 16px;border-radius:999px;font-size:14px;color:var(--c-muted);
    transition:background .18s ease,color .18s ease;
  }
  .chan:hover{background:var(--c-primary-tint);color:var(--c-primary);}
  .chan.is-active{background:var(--c-primary);color:#fff;font-weight:600;}

  .mobile-menu{display:none;border-bottom:1px solid var(--c-line);background:#fff;}
  .mobile-menu.is-open{display:block;}
  .mobile-menu .container-page{padding-top:12px;padding-bottom:16px;}
  .mobile-menu a{display:block;padding:12px 4px;font-size:15px;color:var(--c-text);border-bottom:1px solid var(--c-line);}
  .mobile-menu a:last-child{border-bottom:0;}
  .mobile-menu a:hover{color:var(--c-primary);}
  .mobile-search{margin-top:12px;}

  /* 面包屑 */
  .crumb-wrap{background:var(--c-bg-alt);border-bottom:1px solid var(--c-line);}
  .crumb{display:flex;align-items:center;gap:10px;font-size:13.5px;color:var(--c-muted);padding:14px 0;flex-wrap:wrap;}
  .crumb a{color:var(--c-muted);transition:color .18s ease;}
  .crumb a:hover{color:var(--c-primary);}
  .crumb .sep{color:#C3CBD9;}
  .crumb .current{color:var(--c-text);max-width:520px;overflow:hidden;text-overflow:ellipsis;white-space:nowrap;}

  /* 文章头 */
  .article-head{padding:40px 0 0;}
  .article-head .pill{
    display:inline-flex;align-items:center;gap:6px;font-size:12.5px;font-weight:600;
    color:var(--c-primary);background:var(--c-primary-tint);border-radius:999px;padding:6px 14px;
  }
  .article-head h1{font-size:40px;line-height:1.25;margin:18px 0 18px;letter-spacing:-.4px;max-width:900px;}
  .article-meta{display:flex;align-items:center;gap:18px;flex-wrap:wrap;font-size:13.5px;color:var(--c-muted);}
  .article-meta span{display:inline-flex;align-items:center;gap:7px;}
  .article-meta i{color:var(--c-primary);font-size:13px;}
  .article-cover{margin:28px 0 0;}
  .article-cover img{width:100%;aspect-ratio:16/9;object-fit:cover;border-radius:var(--r-lg);box-shadow:var(--sh-1);background:var(--c-bg-alt);}

  /* 正文布局 */
  .article-layout{display:grid;grid-template-columns:minmax(0,1fr) 300px;gap:48px;padding:48px 0 var(--sp-section);}
  .article-prose{min-width:0;}
  .article-prose h2{font-size:26px;margin:44px 0 16px;padding-left:14px;border-left:4px solid var(--c-primary);}
  .article-prose h2:first-child{margin-top:0;}
  .article-prose h3{font-size:19px;margin:32px 0 12px;}
  .article-prose h4{font-size:17px;margin:24px 0 10px;}
  .article-prose p{margin:0 0 18px;font-size:17px;line-height:1.9;color:var(--c-text);}
  .article-prose ul,.article-prose ol{margin:0 0 20px;padding-left:22px;}
  .article-prose ul{list-style:disc;}
  .article-prose ol{list-style:decimal;}
  .article-prose li{margin:8px 0;font-size:17px;line-height:1.85;}
  .article-prose ul li::marker,.article-prose ol li::marker{color:var(--c-primary);}
  .article-prose blockquote{margin:24px 0;padding:16px 22px;background:var(--c-bg-alt);border-left:3px solid var(--c-accent);border-radius:0 12px 12px 0;}
  .article-prose blockquote p{margin:0;font-size:16px;color:var(--c-text);}
  .article-prose img{border-radius:12px;margin:10px 0 22px;width:100%;height:auto;}
  .article-prose figure{margin:24px 0;}
  .article-prose figcaption{font-size:13px;color:var(--c-muted);text-align:center;margin-top:8px;}
  .article-prose a{color:var(--c-primary);text-decoration:underline;text-underline-offset:3px;}
  .article-prose a:hover{color:var(--c-primary-deep);}
  .article-prose strong{color:var(--c-ink);font-weight:600;}
  .article-prose table{width:100%;border-collapse:collapse;margin:22px 0;font-size:15px;}
  .article-prose th,.article-prose td{border:1px solid var(--c-line);padding:12px 14px;text-align:left;line-height:1.7;}
  .article-prose th{background:var(--c-bg-alt);color:var(--c-ink);font-weight:600;}
  .article-prose tr:hover td{background:#FBFCFE;}
  .article-prose pre{background:#101A30;color:#E6EDF7;padding:16px 18px;border-radius:12px;overflow:auto;font-size:14px;line-height:1.7;margin:20px 0;}
  .article-prose code{background:var(--c-bg-alt);border:1px solid var(--c-line);border-radius:6px;padding:2px 6px;font-size:14px;}
  .article-prose pre code{background:transparent;border:0;padding:0;color:inherit;}
  .article-prose hr{border:0;border-top:1px solid var(--c-line);margin:36px 0;}

  /* 侧栏 */
  .aside{position:relative;}
  .aside-sticky{position:sticky;top:110px;display:flex;flex-direction:column;gap:16px;}
  .card{background:#fff;border:1px solid var(--c-line);border-radius:var(--r-md);padding:24px;box-shadow:var(--sh-1);transition:transform .18s ease,border-color .18s ease,box-shadow .18s ease;}
  .card:hover{transform:translateY(-2px);border-color:rgba(31,78,140,.28);box-shadow:var(--sh-2);}
  .aside-card h3{font-size:15px;margin-bottom:14px;}
  .toc-list{display:flex;flex-direction:column;gap:4px;}
  .toc-list a{display:block;font-size:14px;color:var(--c-muted);padding:8px 10px;border-radius:8px;transition:background .18s ease,color .18s ease;}
  .toc-list a:hover,.toc-list a.is-current{background:var(--c-primary-tint);color:var(--c-primary);}
  .aside-note{font-size:13.5px;color:var(--c-muted);line-height:1.7;margin:8px 0 14px;}
  .aside-mail{font-size:13.5px;color:var(--c-ink);font-weight:600;word-break:break-all;}
  .toc-mobile{display:none;margin-bottom:24px;}
  .toc-mobile summary{
    list-style:none;cursor:pointer;display:flex;align-items:center;justify-content:space-between;
    padding:14px 18px;border:1px solid var(--c-line);border-radius:var(--r-md);background:#fff;
    font-size:15px;font-weight:600;color:var(--c-ink);min-height:44px;
  }
  .toc-mobile summary::-webkit-details-marker{display:none;}
  .toc-mobile[open] summary{border-color:rgba(31,78,140,.28);border-bottom-left-radius:0;border-bottom-right-radius:0;}
  .toc-mobile .toc-body{border:1px solid var(--c-line);border-top:0;border-radius:0 0 var(--r-md) var(--r-md);padding:12px;}

  /* 文末操作条 */
  .article-footbar{
    display:flex;align-items:center;justify-content:space-between;gap:18px;flex-wrap:wrap;
    margin:48px 0 0;padding:22px 24px;background:var(--c-bg-alt);border:1px solid var(--c-line);border-radius:var(--r-md);
  }
  .article-footbar .fb-text{font-size:14.5px;color:var(--c-muted);}
  .article-footbar .fb-text strong{display:block;color:var(--c-ink);font-size:16px;margin-bottom:4px;}
  .fb-actions{display:flex;gap:12px;flex-wrap:wrap;}

  /* 空态 */
  .empty-state{text-align:center;padding:64px 24px;background:var(--c-bg-alt);border:1px dashed var(--c-line);border-radius:var(--r-lg);}
  .empty-state .empty-icon{width:64px;height:64px;border-radius:50%;background:#fff;border:1px solid var(--c-line);display:flex;align-items:center;justify-content:center;margin:0 auto 18px;color:var(--c-primary);font-size:22px;}
  .empty-state h2{font-size:22px;margin-bottom:10px;}
  .empty-state p{font-size:15px;color:var(--c-muted);max-width:520px;margin:0 auto 22px;}

  /* 相关推荐 */
  .related-grid{display:grid;grid-template-columns:repeat(3,minmax(0,1fr));gap:24px;}
  .rel-card{display:flex;flex-direction:column;overflow:hidden;padding:0;}
  .rel-card .thumb{aspect-ratio:16/9;overflow:hidden;background:var(--c-bg-alt);}
  .rel-card .thumb img{width:100%;height:100%;object-fit:cover;transition:transform .3s ease;}
  .rel-card:hover .thumb img{transform:scale(1.03);}
  .rel-card .rel-body{padding:20px 22px 22px;}
  .rel-card .tag{display:inline-block;font-size:12.5px;font-weight:600;color:var(--c-accent);background:rgba(47,166,154,.1);border-radius:999px;padding:4px 12px;margin-bottom:12px;}
  .rel-card h3{font-size:17px;margin-bottom:10px;}
  .rel-card p{font-size:14px;color:var(--c-muted);line-height:1.75;margin-bottom:14px;}
  .rel-card .more{font-size:13.5px;font-weight:600;color:var(--c-primary);display:inline-flex;align-items:center;gap:6px;}
  .rel-card:hover .more i{transform:translateX(3px);}
  .rel-card .more i{transition:transform .18s ease;}

  /* 咨询 CTA */
  .cta-band{
    background:var(--c-primary);border-radius:var(--r-lg);padding:44px 48px;color:#fff;
    display:flex;align-items:center;justify-content:space-between;gap:32px;flex-wrap:wrap;
  }
  .cta-band h2{color:#fff;font-size:27px;margin-bottom:12px;}
  .cta-band p{color:rgba(255,255,255,.85);font-size:15px;max-width:620px;line-height:1.85;}
  .cta-band .cta-right{display:flex;flex-direction:column;gap:12px;align-items:flex-start;}
  .cta-band .btn-light{background:#fff;color:var(--c-primary);}
  .cta-band .btn-light:hover{background:var(--c-primary-tint);transform:translateY(-1px);}
  .cta-mail{font-size:13.5px;color:rgba(255,255,255,.82);}
  .cta-mail a{color:#fff;text-decoration:underline;text-underline-offset:3px;}

  /* 页脚 */
  .site-footer{background:var(--c-footer);color:var(--c-footer-text);margin-top:var(--sp-section);}
  .footer-top{display:grid;grid-template-columns:1.6fr 1fr 1fr 1.3fr;gap:40px;padding:64px 0 44px;}
  .footer-brand .brand-text{color:#fff;}
  .footer-brand p{font-size:13.5px;line-height:1.85;color:var(--c-footer-text);margin-top:16px;max-width:360px;}
  .footer-brand .mail{color:rgba(201,212,232,.85);}
  .footer-col h4{color:#fff;font-size:15px;margin-bottom:16px;}
  .footer-col a{display:block;font-size:13.5px;color:var(--c-footer-text);padding:6px 0;transition:color .18s ease,transform .18s ease;}
  .footer-col a:hover{color:#fff;transform:translateX(3px);}
  .footer-sub input{
    width:100%;height:44px;border-radius:var(--r-sm);border:1px solid rgba(201,212,232,.28);
    background:rgba(255,255,255,.06);color:#fff;padding:0 14px;font-size:14px;margin-bottom:12px;
  }
  .footer-sub input::placeholder{color:rgba(201,212,232,.6);}
  .footer-sub input:focus{outline:none;border-color:#fff;box-shadow:0 0 0 2px rgba(255,255,255,.18);}
  .footer-sub .btn{background:#fff;color:var(--c-footer);width:100%;}
  .footer-sub .btn:hover{background:var(--c-primary-tint);color:var(--c-primary-deep);}
  .footer-bottom{
    border-top:1px solid rgba(201,212,232,.18);padding:20px 0;display:flex;align-items:center;justify-content:space-between;
    gap:16px;flex-wrap:wrap;font-size:13px;color:rgba(201,212,232,.78);
  }

  @media (max-width:1024px){
    :root{--sp-section:64px;}
    .article-layout{grid-template-columns:minmax(0,1fr);gap:0;}
    .aside{display:none;}
    .toc-mobile{display:block;}
    .article-head h1{font-size:34px;}
    .related-grid{grid-template-columns:repeat(2,minmax(0,1fr));}
    .footer-top{grid-template-columns:1.4fr 1fr 1fr;gap:32px;}
    .footer-sub{grid-column:span 3;}
  }
  @media (max-width:900px){
    .search{display:none;}
    .hamburger{display:flex;}
    .mobile-menu .search{display:flex;max-width:none;}
  }
  @media (max-width:768px){
    :root{--sp-section:48px;}
    .container-page{padding:0 16px;}
    .topbar-actions .btn{display:none;}
    .article-head{padding:28px 0 0;}
    .article-head h1{font-size:28px;margin:14px 0 16px;}
    .article-meta{gap:12px;font-size:13px;}
    .article-prose p,.article-prose li{font-size:16px;line-height:1.85;}
    .article-prose h2{font-size:22px;margin:34px 0 14px;}
    .article-prose h3{font-size:18px;}
    .article-cover img{aspect-ratio:4/3;border-radius:12px;}
    .article-footbar{padding:18px;margin-top:32px;}
    .fb-actions{width:100%;}
    .fb-actions .btn{width:100%;}
    .related-grid{grid-template-columns:minmax(0,1fr);}
    .section-head h2{font-size:22px;}
    .cta-band{padding:30px 22px;}
    .cta-band h2{font-size:22px;}
    .cta-band .cta-right{width:100%;}
    .cta-band .cta-right .btn{width:100%;}
    .footer-top{grid-template-columns:1fr 1fr;gap:28px;padding:44px 0 32px;}
    .footer-brand{grid-column:span 2;}
    .footer-sub{grid-column:span 2;}
    .footer-bottom{flex-direction:column;align-items:flex-start;}
  }
  @media (max-width:520px){
    .footer-top{grid-template-columns:1fr;}
    .footer-brand,.footer-sub{grid-column:span 1;}
    .crumb .current{max-width:220px;}
  }

/* roulang page: category1 */
:root{
  --c-primary:#1F4E8C;
  --c-primary-deep:#163A6B;
  --c-primary-tint:#EAF1FA;
  --c-accent:#2FA69A;
  --c-star:#E4B34A;
  --c-ink:#16203A;
  --c-text:#2A3448;
  --c-muted:#6B7488;
  --c-line:#E4E9F2;
  --c-bg:#FFFFFF;
  --c-bg-alt:#F6F8FC;
  --c-danger:#D9483B;
  --sh-1:0 1px 2px rgba(22,32,58,.05),0 10px 24px -14px rgba(22,32,58,.18);
  --sh-2:0 2px 6px rgba(22,32,58,.06),0 18px 30px -14px rgba(22,32,58,.26);
  --r-sm:10px;
  --r-md:12px;
  --r-lg:16px;
}
*,*::before,*::after{box-sizing:border-box;}
html{scroll-behavior:smooth;}
body{
  margin:0;
  font-family:"PingFang SC","Hiragino Sans GB","Microsoft YaHei",system-ui,-apple-system,"Segoe UI",sans-serif;
  font-size:17px;
  line-height:1.9;
  color:var(--c-text);
  background:var(--c-bg);
  -webkit-font-smoothing:antialiased;
}
h1,h2,h3,h4{color:var(--c-ink);font-weight:700;line-height:1.32;margin:0;}
p{margin:0;}
a{color:inherit;text-decoration:none;}
img{display:block;max-width:100%;}
button{font-family:inherit;}
:focus-visible{outline:2px solid var(--c-primary);outline-offset:2px;}
.container-page{max-width:1200px;margin:0 auto;padding:0 24px;}

/* ---------- header ---------- */
.site-header{position:sticky;top:0;z-index:50;}
.topbar{background:#fff;border-bottom:1px solid var(--c-line);}
.topbar-inner{display:flex;align-items:center;gap:20px;height:64px;}
.brand{display:inline-flex;align-items:center;gap:10px;font-weight:700;font-size:19px;color:var(--c-ink);white-space:nowrap;}
.brand-mark{position:relative;width:20px;height:20px;border-radius:6px;background:var(--c-primary);flex:0 0 auto;}
.brand-mark::after{content:"";position:absolute;right:3px;top:3px;width:6px;height:6px;border-radius:50%;background:var(--c-star);}
.brand-text{letter-spacing:.01em;}
.search-wrap{position:relative;flex:0 1 380px;margin:0 auto;display:none;}
.search-icon{position:absolute;left:13px;top:50%;transform:translateY(-50%);width:16px;height:16px;color:var(--c-muted);}
.search-input{
  width:100%;height:40px;border-radius:var(--r-sm);border:1px solid var(--c-line);
  background:var(--c-bg-alt);padding:0 14px 0 40px;font-size:14px;color:var(--c-text);
  outline:none;transition:border-color .18s ease,box-shadow .18s ease,background .18s ease;
}
.search-input::placeholder{color:var(--c-muted);}
.search-input:focus{border-color:var(--c-primary);background:#fff;box-shadow:0 0 0 3px var(--c-primary-tint);}
.top-actions{margin-left:auto;display:flex;align-items:center;gap:10px;}

.btn{
  display:inline-flex;align-items:center;justify-content:center;gap:8px;
  height:44px;padding:0 22px;border-radius:var(--r-sm);border:1px solid transparent;
  font-size:15px;font-weight:600;cursor:pointer;background:#fff;color:var(--c-ink);
  transition:background .18s ease,color .18s ease,box-shadow .18s ease,transform .18s ease,border-color .18s ease;
}
.btn-primary{background:var(--c-primary);color:#fff;}
.btn-primary:hover{background:var(--c-primary-deep);transform:translateY(-1px);box-shadow:0 10px 20px -12px rgba(31,78,140,.65);}
.btn-primary:active{transform:translateY(0);box-shadow:none;}
.btn-ghost{border-color:var(--c-primary);color:var(--c-primary);background:transparent;}
.btn-ghost:hover{background:var(--c-primary-tint);}
.btn-light{background:#fff;color:var(--c-primary);}
.btn-light:hover{background:var(--c-primary-tint);transform:translateY(-1px);}
.btn-outline{border-color:rgba(255,255,255,.6);color:#fff;background:transparent;}
.btn-outline:hover{background:rgba(255,255,255,.14);}
.text-link{color:var(--c-primary);font-weight:600;font-size:15px;display:inline-flex;align-items:center;gap:6px;}
.text-link .arrow{transition:transform .18s ease;}
.text-link:hover .arrow{transform:translateX(3px);}
.text-link:hover{text-decoration:underline;}

.hamburger{
  display:none;width:44px;height:44px;border-radius:var(--r-sm);border:1px solid var(--c-line);
  background:#fff;flex-direction:column;align-items:center;justify-content:center;gap:5px;cursor:pointer;
}
.hamburger span{display:block;width:18px;height:2px;border-radius:2px;background:var(--c-ink);}

.channelbar{background:var(--c-bg-alt);border-bottom:1px solid var(--c-line);}
.channel-inner{display:flex;align-items:center;gap:8px;height:46px;overflow-x:auto;scrollbar-width:none;-ms-overflow-style:none;}
.channel-inner::-webkit-scrollbar{display:none;}
.chan{
  display:inline-flex;align-items:center;height:34px;padding:0 16px;border-radius:999px;
  font-size:15px;color:var(--c-muted);white-space:nowrap;transition:background .18s ease,color .18s ease;
}
.chan:hover{background:var(--c-primary-tint);color:var(--c-primary);}
.chan.is-active{background:var(--c-primary);color:#fff;font-weight:600;}

/* ---------- page hero ---------- */
.page-hero{
  position:relative;min-height:230px;display:flex;align-items:center;color:#fff;
  background:url(/assets/images/backpic/back-1.png) center/cover no-repeat;overflow:hidden;
}
.page-hero::before{
  content:"";position:absolute;inset:0;
  background:linear-gradient(90deg,rgba(22,58,107,.90) 0%,rgba(31,78,140,.72) 60%,rgba(31,78,140,.62) 100%);
}
.page-hero .container-page{position:relative;z-index:1;padding-top:40px;padding-bottom:40px;width:100%;}
.hero-pill{
  display:inline-flex;align-items:center;height:30px;padding:0 14px;border-radius:999px;
  background:rgba(255,255,255,.16);border:1px solid rgba(255,255,255,.32);
  font-size:13px;letter-spacing:.02em;color:#fff;
}
.page-hero h1{color:#fff;font-size:40px;margin:16px 0 12px;letter-spacing:-.01em;}
.page-hero-sub{color:#DCE6F5;font-size:16px;line-height:1.85;max-width:680px;}

/* ---------- anchors ---------- */
.anchor-row{display:flex;flex-wrap:wrap;gap:10px;padding:22px 0;border-bottom:1px solid var(--c-line);}
.pill{
  display:inline-flex;align-items:center;height:36px;padding:0 16px;border-radius:999px;
  background:var(--c-bg-alt);border:1px solid var(--c-line);font-size:14px;color:var(--c-text);
  transition:background .18s ease,color .18s ease,border-color .18s ease;
}
.pill:hover{background:var(--c-primary-tint);border-color:rgba(31,78,140,.35);color:var(--c-primary);}

/* ---------- sections ---------- */
.section{padding:80px 0;}
.section.alt{background:var(--c-bg-alt);}
.section-head{margin-bottom:36px;max-width:760px;}
.eyebrow{
  display:inline-block;font-size:13px;font-weight:600;letter-spacing:.1em;color:var(--c-accent);
  text-transform:uppercase;margin-bottom:10px;
}
.section-head h2{font-size:30px;margin-bottom:12px;}
.section-head p{color:var(--c-muted);font-size:16px;line-height:1.85;}

/* ---------- split ---------- */
.feature-split{display:grid;grid-template-columns:1fr 1fr;gap:48px;align-items:center;}
.check-list{list-style:none;margin:0;padding:0;}
.check-list li{position:relative;padding-left:30px;margin-bottom:14px;font-size:16px;line-height:1.8;}
.check-list li::before{
  content:"";position:absolute;left:0;top:9px;width:16px;height:16px;border-radius:50%;
  background:var(--c-primary-tint);border:1px solid rgba(31,78,140,.28);
}
.check-list li::after{
  content:"";position:absolute;left:5px;top:14px;width:6px;height:3px;border-left:2px solid var(--c-accent);
  border-bottom:2px solid var(--c-accent);transform:rotate(-45deg);
}
.media{
  position:relative;border-radius:var(--r-lg);overflow:hidden;box-shadow:var(--sh-1);background:var(--c-bg-alt);
  aspect-ratio:4/3;
}
.media img{width:100%;height:100%;object-fit:cover;}
.media-tag{
  position:absolute;left:16px;bottom:16px;background:#fff;border-radius:var(--r-md);
  padding:10px 14px;box-shadow:var(--sh-1);
}
.media-tag strong{display:block;font-size:14px;color:var(--c-ink);font-weight:700;}
.media-tag span{font-size:12px;color:var(--c-muted);}
.tabular{font-variant-numeric:tabular-nums;letter-spacing:-.01em;}

/* ---------- scene grid ---------- */
.scene-grid{display:grid;grid-template-columns:repeat(12,1fr);gap:24px;}
.card{
  background:#fff;border:1px solid var(--c-line);border-radius:14px;padding:24px;
  box-shadow:var(--sh-1);transition:transform .18s ease,box-shadow .18s ease,border-color .18s ease;
}
.card:hover{transform:translateY(-2px);border-color:rgba(31,78,140,.28);box-shadow:var(--sh-2);}
.card h3{font-size:19px;margin-bottom:8px;}
.card p{font-size:15px;color:var(--c-muted);line-height:1.85;}
.card .num{font-size:12px;color:var(--c-muted);letter-spacing:.08em;display:block;margin-bottom:12px;}
.card-lg{grid-column:span 6;display:flex;flex-direction:column;gap:16px;}
.card-lg .media-small{border-radius:var(--r-md);overflow:hidden;aspect-ratio:16/9;background:var(--c-bg-alt);}
.card-lg .media-small img{width:100%;height:100%;object-fit:cover;}
.card-md{grid-column:span 3;}
.card-sm{grid-column:span 3;background:var(--c-bg-alt);}
.card-more{grid-column:span 3;background:var(--c-bg-alt);border:1px dashed rgba(31,78,140,.4);display:flex;flex-direction:column;justify-content:space-between;}
.card-more:hover{background:var(--c-primary-tint);}

/* ---------- steps ---------- */
.steps{display:grid;grid-template-columns:repeat(4,1fr);gap:20px;}
.step{background:#fff;border:1px solid var(--c-line);border-radius:14px;padding:24px 22px;box-shadow:var(--sh-1);}
.step-num{font-size:22px;font-weight:700;color:var(--c-primary);font-variant-numeric:tabular-nums;letter-spacing:-.02em;}
.step h3{font-size:17px;margin:12px 0 8px;}
.step p{font-size:14px;color:var(--c-muted);line-height:1.8;}

/* ---------- spec list ---------- */
.spec-grid{display:grid;grid-template-columns:repeat(2,1fr);gap:0 48px;}
.spec-item{display:flex;gap:14px;padding:20px 0;border-bottom:1px dashed var(--c-line);}
.spec-dot{width:10px;height:10px;border-radius:3px;background:var(--c-primary);margin-top:11px;flex:0 0 auto;}
.spec-dot.accent{background:var(--c-accent);}
.spec-dot.star{background:var(--c-star);}
.spec-item h3{font-size:16px;margin-bottom:4px;}
.spec-item p{font-size:14px;color:var(--c-muted);line-height:1.8;}

/* ---------- faq ---------- */
.faq-layout{display:grid;grid-template-columns:4fr 8fr;gap:48px;align-items:start;}
.faq-side h2{font-size:28px;margin-bottom:12px;}
.faq-side p{font-size:15px;color:var(--c-muted);line-height:1.85;margin-bottom:20px;}
.faq-item{
  background:#fff;border:1px solid var(--c-line);border-radius:var(--r-md);
  padding:18px 20px;margin-bottom:12px;transition:background .18s ease,border-color .18s ease;
}
.faq-item:hover{border-color:rgba(31,78,140,.28);}
.faq-item[open]{border-left:3px solid var(--c-primary);background:#F8FAFE;}
.faq-item summary{
  list-style:none;cursor:pointer;display:flex;align-items:center;justify-content:space-between;gap:16px;
  font-size:16px;font-weight:600;color:var(--c-ink);min-height:32px;
}
.faq-item summary::-webkit-details-marker{display:none;}
.faq-item .arrow{color:var(--c-muted);transition:transform .2s ease,color .2s ease;flex:0 0 auto;}
.faq-item[open] .arrow{transform:rotate(90deg);color:var(--c-primary);}
.faq-item .answer{padding-top:12px;font-size:15px;line-height:1.85;color:var(--c-text);}

/* ---------- cta ---------- */
.cta-band{
  background:var(--c-primary);color:#fff;border-radius:var(--r-lg);padding:48px;
  display:grid;grid-template-columns:1fr auto;gap:28px;align-items:center;
}
.cta-band h2{color:#fff;font-size:28px;margin-bottom:10px;}
.cta-band p{color:#D5E2F5;font-size:16px;line-height:1.85;max-width:620px;}
.cta-actions{display:flex;gap:12px;flex-wrap:wrap;}

/* ---------- footer ---------- */
.site-footer{background:#14264A;color:#C9D4E8;margin-top:0;}
.footer-top{display:grid;grid-template-columns:2fr 1fr 1fr 1.3fr;gap:32px;padding:56px 0 32px;}
.footer-brand .brand{color:#fff;margin-bottom:14px;}
.footer-brand .brand-text{color:#fff;}
.footer-brand p{font-size:14px;line-height:1.85;color:#A9B8D6;margin-bottom:10px;max-width:340px;}
.footer-brand .mail{color:#C9D4E8;font-size:14px;}
.footer-col h4{color:#fff;font-size:15px;margin-bottom:14px;font-weight:600;}
.footer-col a{display:block;font-size:14px;color:#C9D4E8;padding:5px 0;transition:color .18s ease;}
.footer-col a:hover{color:#fff;}
.footer-sub input{
  width:100%;height:44px;border-radius:var(--r-sm);border:1px solid rgba(255,255,255,.18);
  background:rgba(255,255,255,.07);color:#fff;padding:0 14px;font-size:14px;margin-bottom:10px;outline:none;
}
.footer-sub input::placeholder{color:#8FA0C0;}
.footer-sub input:focus{border-color:rgba(255,255,255,.5);background:rgba(255,255,255,.12);}
.footer-sub .btn{width:100%;background:#fff;color:var(--c-primary);}
.footer-sub .btn:hover{background:var(--c-primary-tint);}
.footer-bottom{
  border-top:1px solid rgba(255,255,255,.12);padding:18px 0;display:flex;justify-content:space-between;
  gap:12px;flex-wrap:wrap;font-size:13px;color:#93A4C4;
}

/* ---------- responsive ---------- */
@media (min-width:1024px){
  .search-wrap{display:block;}
}
@media (max-width:1024px){
  .section{padding:64px 0;}
  .page-hero h1{font-size:32px;}
  .feature-split{gap:32px;}
  .card-lg{grid-column:span 12;}
  .card-md{grid-column:span 6;}
  .card-sm,.card-more{grid-column:span 6;}
  .steps{grid-template-columns:repeat(2,1fr);}
  .faq-layout{grid-template-columns:1fr;gap:32px;}
  .footer-top{grid-template-columns:1fr 1fr;gap:28px;}
  .cta-band{grid-template-columns:1fr;padding:36px 28px;}
}
@media (max-width:1023px){
  .search-wrap{display:none;}
  .hamburger{display:flex;}
  .channelbar{display:none;}
  body.nav-open .channelbar{display:block;}
  body.nav-open .channel-inner{flex-direction:column;align-items:stretch;height:auto;padding-top:10px;padding-bottom:12px;gap:4px;}
  body.nav-open .chan{height:auto;padding:12px 14px;border-radius:var(--r-sm);}
}
@media (max-width:768px){
  .container-page{padding:0 16px;}
  .section{padding:48px 0;}
  .section-head h2{font-size:22px;}
  .page-hero{min-height:210px;}
  .page-hero h1{font-size:28px;margin:12px 0 10px;}
  .page-hero-sub{font-size:15px;}
  .feature-split{grid-template-columns:1fr;gap:28px;}
  .media{aspect-ratio:16/9;}
  .scene-grid{gap:16px;}
  .card-md,.card-sm,.card-more{grid-column:span 12;}
  .card{padding:20px;}
  .steps{grid-template-columns:1fr;}
  .spec-grid{grid-template-columns:1fr;gap:0;}
  .footer-top{grid-template-columns:1fr;gap:24px;padding:40px 0 24px;}
  .footer-bottom{flex-direction:column;gap:6px;}
  .top-actions .btn{padding:0 16px;font-size:14px;}
}
@media (max-width:520px){
  .brand{font-size:17px;}
  .top-actions .btn{display:none;}
  .cta-actions .btn{width:100%;}
}

/* roulang page: category2 */
:root{
    --c-primary:#1F4E8C;
    --c-primary-deep:#163A6B;
    --c-primary-tint:#EAF1FA;
    --c-accent:#2FA69A;
    --c-star:#E4B34A;
    --c-ink:#16203A;
    --c-text:#2A3448;
    --c-muted:#6B7488;
    --c-line:#E4E9F2;
    --c-bg:#FFFFFF;
    --c-bg-alt:#F6F8FC;
    --c-danger:#D9483B;
    --c-footer:#14264A;
    --sh-1:0 1px 2px rgba(22,32,58,.05), 0 10px 24px -14px rgba(22,32,58,.18);
    --sh-2:0 2px 4px rgba(22,32,58,.06), 0 18px 34px -14px rgba(22,32,58,.24);
    --r-card:14px;
    --r-md:10px;
    --r-lg:16px;
  }
  *,*::before,*::after{box-sizing:border-box;}
  html{-webkit-text-size-adjust:100%;}
  body{
    margin:0;
    font-family:"PingFang SC","Hiragino Sans GB","Microsoft YaHei",system-ui,-apple-system,"Segoe UI",sans-serif;
    font-size:16.5px;
    line-height:1.85;
    color:var(--c-text);
    background:var(--c-bg);
    -webkit-font-smoothing:antialiased;
  }
  h1,h2,h3,h4{margin:0;color:var(--c-ink);font-weight:700;line-height:1.28;letter-spacing:-.01em;}
  p{margin:0;}
  a{color:inherit;text-decoration:none;}
  img{display:block;max-width:100%;}
  ul{margin:0;padding:0;list-style:none;}
  button,input,select,textarea{font-family:inherit;font-size:inherit;color:inherit;}
  :focus-visible{outline:2px solid var(--c-primary);outline-offset:2px;border-radius:6px;}
  .container-page{width:100%;max-width:1200px;margin:0 auto;padding:0 24px;}
  .num{font-variant-numeric:tabular-nums;letter-spacing:-.01em;}

  /* ---------- 顶部导航 ---------- */
  .topbar{position:sticky;top:0;z-index:50;background:#fff;border-bottom:1px solid var(--c-line);}
  .topbar-inner{display:flex;align-items:center;gap:20px;height:64px;}
  .brand{display:inline-flex;align-items:center;gap:10px;flex-shrink:0;}
  .brand-mark{position:relative;width:22px;height:22px;border-radius:6px;background:var(--c-primary);flex-shrink:0;}
  .brand-mark::after{content:"";position:absolute;right:3px;top:3px;width:6px;height:6px;border-radius:50%;background:var(--c-star);}
  .brand-text{font-size:19px;font-weight:700;color:var(--c-ink);letter-spacing:0;}
  .topbar-search{flex:1;max-width:400px;margin-left:8px;}
  .topbar-search input{
    width:100%;height:40px;border-radius:var(--r-md);border:1px solid transparent;
    background:var(--c-bg-alt);padding:0 16px;font-size:14.5px;color:var(--c-text);
    transition:border-color .18s ease, box-shadow .18s ease, background .18s ease;
  }
  .topbar-search input::placeholder{color:var(--c-muted);}
  .topbar-search input:focus{outline:none;background:#fff;border-color:var(--c-primary);box-shadow:0 0 0 3px var(--c-primary-tint);}
  .topbar-actions{display:flex;align-items:center;gap:10px;margin-left:auto;}
  .nav-toggle{display:none;align-items:center;justify-content:center;width:44px;height:44px;border-radius:var(--r-md);border:1px solid var(--c-line);background:#fff;cursor:pointer;transition:background .18s ease;}
  .nav-toggle:hover{background:var(--c-primary-tint);}
  .nav-toggle span{display:block;width:18px;height:2px;background:var(--c-ink);border-radius:2px;position:relative;}
  .nav-toggle span::before,.nav-toggle span::after{content:"";position:absolute;left:0;width:18px;height:2px;background:var(--c-ink);border-radius:2px;}
  .nav-toggle span::before{top:-6px;}
  .nav-toggle span::after{top:6px;}

  .mobile-menu{display:none;background:#fff;border-bottom:1px solid var(--c-line);}
  .mobile-menu.open{display:block;}
  .mobile-menu a{display:block;padding:14px 24px;border-top:1px solid var(--c-line);font-size:15px;color:var(--c-text);}
  .mobile-menu a:hover{background:var(--c-bg-alt);color:var(--c-primary);}

  /* ---------- 频道行 ---------- */
  .channelbar{background:#fff;border-bottom:1px solid var(--c-line);position:relative;}
  .channel-inner{display:flex;align-items:center;gap:8px;height:46px;overflow-x:auto;scrollbar-width:none;-ms-overflow-style:none;}
  .channel-inner::-webkit-scrollbar{display:none;}
  .chan{
    display:inline-flex;align-items:center;height:32px;padding:0 16px;border-radius:999px;
    font-size:14px;color:var(--c-muted);white-space:nowrap;flex-shrink:0;
    transition:background .18s ease,color .18s ease;
  }
  .chan:hover{background:var(--c-primary-tint);color:var(--c-primary);}
  .chan.is-active{background:var(--c-primary);color:#fff;font-weight:600;}

  /* ---------- 按钮 ---------- */
  .btn{
    display:inline-flex;align-items:center;justify-content:center;gap:8px;
    height:44px;padding:0 24px;border-radius:var(--r-md);border:1px solid transparent;
    font-size:15px;font-weight:600;cursor:pointer;
    transition:background .18s ease, color .18s ease, transform .18s ease, box-shadow .18s ease, border-color .18s ease;
  }
  .btn-primary{background:var(--c-primary);color:#fff;}
  .btn-primary:hover{background:var(--c-primary-deep);transform:translateY(-1px);box-shadow:0 10px 20px -10px rgba(31,78,140,.55);}
  .btn-primary:active{transform:translateY(0);}
  .btn-ghost{background:transparent;border-color:var(--c-primary);color:var(--c-primary);}
  .btn-ghost:hover{background:var(--c-primary-tint);}
  .btn-onDark{background:#fff;color:var(--c-primary);}
  .btn-onDark:hover{background:var(--c-primary-tint);transform:translateY(-1px);}
  .btn-sm{height:38px;padding:0 18px;font-size:14px;}
  .link-arrow{display:inline-flex;align-items:center;gap:6px;color:var(--c-primary);font-size:14.5px;font-weight:600;}
  .link-arrow::after{content:"→";transition:transform .18s ease;}
  .link-arrow:hover::after{transform:translateX(3px);}
  .link-arrow:hover{text-decoration:underline;}

  /* ---------- 通用区块 ---------- */
  .section{padding:80px 0;}
  .section-alt{background:var(--c-bg-alt);}
  .section-tight{padding:56px 0;}
  .eyebrow{display:inline-block;font-size:13px;font-weight:600;letter-spacing:.1em;color:var(--c-primary);margin-bottom:12px;}
  .section-head{display:flex;align-items:flex-end;justify-content:space-between;gap:24px;margin-bottom:40px;flex-wrap:wrap;}
  .section-head h2{font-size:clamp(22px,2.3vw,30px);}
  .section-head p{margin-top:10px;color:var(--c-muted);font-size:15px;max-width:640px;}
  .lead{font-size:17px;line-height:1.9;color:var(--c-text);}

  /* ---------- 分类横幅 ---------- */
  .cat-hero{position:relative;min-height:230px;display:flex;align-items:center;background-image:url('/assets/images/backpic/back-1.png');background-size:cover;background-position:center;}
  .cat-hero::before{content:"";position:absolute;inset:0;background:rgba(31,78,140,.74);}
  .cat-hero-inner{position:relative;padding:52px 0;}
  .cat-hero h1{color:#fff;font-size:clamp(28px,4vw,42px);line-height:1.25;}
  .cat-hero p{color:rgba(255,255,255,.9);font-size:16px;max-width:760px;margin-top:14px;line-height:1.8;}
  .crumb{font-size:13.5px;color:rgba(255,255,255,.78);margin-bottom:14px;}
  .crumb a:hover{color:#fff;text-decoration:underline;}
  .banner-tags{display:flex;flex-wrap:wrap;gap:10px;margin-top:22px;}
  .banner-tags span{
    display:inline-flex;align-items:center;height:30px;padding:0 14px;border-radius:999px;
    font-size:13px;color:#fff;background:rgba(255,255,255,.14);border:1px solid rgba(255,255,255,.34);
  }

  /* ---------- 图文交替 ---------- */
  .media-row{display:grid;grid-template-columns:1.02fr 1fr;gap:52px;align-items:center;}
  .media-row + .media-row{margin-top:72px;}
  .media-row.reverse .media-figure{order:2;}
  .media-figure img{width:100%;aspect-ratio:4/3;object-fit:cover;border-radius:var(--r-lg);box-shadow:var(--sh-1);}
  .media-text h3{font-size:20px;margin-bottom:14px;}
  .media-text p{color:var(--c-text);font-size:16px;line-height:1.9;}
  .check-list{margin-top:20px;display:grid;gap:10px;}
  .check-list li{display:flex;gap:10px;align-items:flex-start;font-size:15px;color:var(--c-text);}
  .check-list li::before{content:"";flex-shrink:0;width:16px;height:16px;margin-top:6px;border-radius:5px;background:var(--c-primary-tint);border:1px solid rgba(47,166,154,.5);box-shadow:inset 0 0 0 3px #fff;}
  .check-list li span b{color:var(--c-ink);}

  /* ---------- 卡片 ---------- */
  .card{background:#fff;border:1px solid var(--c-line);border-radius:var(--r-card);padding:24px;box-shadow:var(--sh-1);transition:transform .18s ease,box-shadow .18s ease,border-color .18s ease;}
  .card:hover{transform:translateY(-2px);border-color:rgba(31,78,140,.28);box-shadow:var(--sh-2);}
  .card h3{font-size:18px;margin-bottom:10px;}
  .card p{font-size:14.8px;color:var(--c-muted);line-height:1.8;}
  .card .cover{width:100%;aspect-ratio:16/9;object-fit:cover;border-radius:12px;margin-bottom:18px;}
  .card-index{display:block;font-size:12px;font-weight:700;color:var(--c-muted);letter-spacing:.12em;margin-bottom:12px;}
  .grid-asym{display:grid;grid-template-columns:repeat(12,1fr);gap:24px;}
  .span-6{grid-column:span 6;}
  .span-4{grid-column:span 4;}
  .span-3{grid-column:span 3;}
  .card-wide{display:grid;grid-template-columns:1.1fr 1fr;gap:24px;align-items:center;}
  .card-wide .cover{margin-bottom:0;aspect-ratio:4/3;}
  .pill{display:inline-flex;align-items:center;height:26px;padding:0 12px;border-radius:999px;font-size:12.5px;font-weight:600;background:var(--c-primary-tint);color:var(--c-primary);}
  .pill-accent{background:rgba(47,166,154,.12);color:#1D7C73;}

  /* ---------- 步骤 ---------- */
  .steps{display:grid;grid-template-columns:repeat(4,1fr);gap:24px;}
  .step{background:#fff;border:1px solid var(--c-line);border-radius:var(--r-card);padding:26px 22px;box-shadow:var(--sh-1);position:relative;transition:transform .18s ease,box-shadow .18s ease,border-color .18s ease;}
  .step:hover{transform:translateY(-2px);border-color:rgba(31,78,140,.28);box-shadow:var(--sh-2);}
  .step b{display:block;font-size:13px;letter-spacing:.14em;color:var(--c-muted);margin-bottom:14px;}
  .step h3{font-size:17.5px;margin-bottom:10px;}
  .step p{font-size:14.8px;color:var(--c-muted);line-height:1.8;}

  /* ---------- 比例条 ---------- */
  .meters{background:#fff;border:1px solid var(--c-line);border-radius:var(--r-lg);padding:12px 28px;box-shadow:var(--sh-1);}
  .meter-row{display:grid;grid-template-columns:150px 1fr 92px;gap:20px;align-items:center;padding:20px 0;border-bottom:1px solid var(--c-line);transition:background .18s ease;}
  .meter-row:last-child{border-bottom:none;}
  .meter-row:hover{background:#FBFCFE;}
  .meter-name{font-size:15.5px;font-weight:600;color:var(--c-ink);}
  .meter-track{height:10px;border-radius:999px;background:#D8DEE9;overflow:hidden;}
  .meter-fill{height:100%;border-radius:999px;background:var(--c-primary);}
  .meter-fill.accent{background:var(--c-accent);}
  .meter-fill.soft{background:rgba(31,78,140,.45);}
  .meter-val{text-align:right;font-size:14px;color:var(--c-muted);}
  .meter-val b{color:var(--c-accent);font-weight:700;}

  /* ---------- 深色档案块 ---------- */
  .dark-panel{background:var(--c-footer);border-radius:20px;padding:52px;color:#C9D4E8;}
  .dark-panel h2{color:#fff;font-size:clamp(22px,2.2vw,28px);}
  .dark-panel .lead{color:#C9D4E8;font-size:16px;margin-top:14px;max-width:720px;}
  .dark-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:24px;margin-top:36px;}
  .dark-grid .item{border:1px solid rgba(201,212,232,.22);border-radius:var(--r-card);padding:22px;background:rgba(255,255,255,.03);}
  .dark-grid .item h3{color:#fff;font-size:17px;margin-bottom:10px;}
  .dark-grid .item p{font-size:14.5px;line-height:1.8;color:#AFBED8;}
  .dark-actions{margin-top:36px;display:flex;gap:14px;flex-wrap:wrap;}

  /* ---------- FAQ ---------- */
  .faq-wrap{display:grid;grid-template-columns:4fr 8fr;gap:48px;}
  .faq-side h2{font-size:clamp(22px,2.3vw,30px);}
  .faq-side p{margin-top:14px;color:var(--c-muted);font-size:15px;line-height:1.8;}
  .faq-side .btn{margin-top:22px;}
  .faq-list{display:grid;gap:12px;}
  details.faq-item{background:#fff;border:1px solid var(--c-line);border-radius:12px;transition:border-color .18s ease,background .18s ease;}
  details.faq-item summary{
    list-style:none;cursor:pointer;padding:18px 20px;min-height:64px;
    display:flex;align-items:center;justify-content:space-between;gap:16px;
    font-size:16px;font-weight:600;color:var(--c-ink);
  }
  details.faq-item summary::-webkit-details-marker{display:none;}
  .faq-arrow{flex-shrink:0;width:22px;height:22px;display:inline-flex;align-items:center;justify-content:center;color:var(--c-muted);transition:transform .2s ease,color .2s ease;font-size:15px;}
  details.faq-item[open]{border-left:3px solid var(--c-primary);background:#F8FAFE;}
  details.faq-item[open] .faq-arrow{transform:rotate(90deg);color:var(--c-primary);}
  .faq-body{padding:0 20px 20px;font-size:15.2px;line-height:1.85;color:var(--c-text);}

  /* ---------- CTA ---------- */
  .cta-band{background:var(--c-primary);border-radius:20px;padding:52px;display:grid;grid-template-columns:1.4fr 1fr;gap:40px;align-items:center;}
  .cta-band h2{color:#fff;font-size:clamp(22px,2.2vw,28px);}
  .cta-band p{color:rgba(255,255,255,.86);margin-top:12px;font-size:15.5px;line-height:1.85;}
  .cta-actions{display:flex;gap:14px;flex-wrap:wrap;justify-content:flex-end;}

  /* ---------- 页脚 ---------- */
  .site-footer{background:var(--c-footer);color:#C9D4E8;padding:64px 0 28px;margin-top:0;}
  .footer-top{display:grid;grid-template-columns:1.5fr 1fr 1fr 1.3fr;gap:40px;}
  .footer-brand .brand-text{color:#fff;}
  .footer-brand p{font-size:14.2px;line-height:1.85;color:#9FB0CD;margin-top:16px;}
  .footer-brand .mail{margin-top:10px;color:#C9D4E8;}
  .footer-col h4{color:#fff;font-size:15px;margin-bottom:16px;}
  .footer-col a{display:block;font-size:14px;color:#C9D4E8;padding:6px 0;transition:color .18s ease;}
  .footer-col a:hover{color:#fff;}
  .footer-sub input{width:100%;height:42px;border-radius:var(--r-md);border:1px solid rgba(201,212,232,.28);background:rgba(255,255,255,.06);color:#fff;padding:0 14px;margin-bottom:12px;}
  .footer-sub input::placeholder{color:#8FA1C0;}
  .footer-sub input:focus{outline:none;border-color:#7FA8DD;box-shadow:0 0 0 3px rgba(127,168,221,.22);}
  .footer-sub .btn{width:100%;background:var(--c-primary);color:#fff;border-color:transparent;}
  .footer-sub .btn:hover{background:#2A63AE;}
  .footer-bottom{margin-top:48px;padding-top:20px;border-top:1px solid rgba(201,212,232,.16);display:flex;justify-content:space-between;gap:16px;flex-wrap:wrap;font-size:13px;color:#8FA1C0;}

  /* ---------- 响应式 ---------- */
  @media (max-width:1024px){
    .topbar-search{display:none;}
    .nav-toggle{display:inline-flex;}
    .section{padding:64px 0;}
    .media-row{grid-template-columns:1fr;gap:28px;}
    .media-row.reverse .media-figure{order:0;}
    .media-row + .media-row{margin-top:56px;}
    .grid-asym{grid-template-columns:repeat(6,1fr);}
    .span-6{grid-column:span 6;}
    .span-4{grid-column:span 3;}
    .span-3{grid-column:span 3;}
    .card-wide{grid-template-columns:1fr;}
    .card-wide .cover{margin-bottom:18px;aspect-ratio:16/9;}
    .steps{grid-template-columns:repeat(2,1fr);}
    .faq-wrap{grid-template-columns:1fr;gap:32px;}
    .dark-panel{padding:40px;}
    .dark-grid{grid-template-columns:1fr;gap:16px;}
    .cta-band{grid-template-columns:1fr;padding:40px;}
    .cta-actions{justify-content:flex-start;}
    .footer-top{grid-template-columns:1fr 1fr;gap:32px;}
  }
  @media (max-width:768px){
    body{font-size:16px;}
    .container-page{padding:0 16px;}
    .section{padding:48px 0;}
    .section-tight{padding:40px 0;}
    .cat-hero-inner{padding:40px 0;}
    .cat-hero p{font-size:15px;}
    .grid-asym{grid-template-columns:1fr;gap:16px;}
    .span-6,.span-4,.span-3{grid-column:span 1;}
    .steps{grid-template-columns:1fr;}
    .meters{padding:8px 18px;}
    .meter-row{grid-template-columns:1fr;gap:10px;}
    .meter-val{text-align:left;}
    .dark-panel{padding:28px;}
    .cta-band{padding:28px;}
    .footer-top{grid-template-columns:1fr;gap:28px;}
    .footer-bottom{flex-direction:column;gap:8px;}
    .brand-text{font-size:17.5px;}
  }

/* roulang page: category3 */
:root{
  --c-primary:#1F4E8C;
  --c-primary-deep:#163A6B;
  --c-primary-tint:#EAF1FA;
  --c-accent:#2FA69A;
  --c-star:#E4B34A;
  --c-ink:#16203A;
  --c-text:#2A3448;
  --c-muted:#6B7488;
  --c-line:#E4E9F2;
  --c-bg:#FFFFFF;
  --c-bg-alt:#F6F8FC;
  --c-danger:#D9483B;
  --sh-1:0 1px 2px rgba(22,32,58,.05), 0 10px 24px -14px rgba(22,32,58,.18);
  --sh-2:0 1px 2px rgba(22,32,58,.05), 0 18px 34px -14px rgba(22,32,58,.24);
  --r-card:14px;
  --r-btn:10px;
}
*,*::before,*::after{box-sizing:border-box}
html{-webkit-text-size-adjust:100%;scroll-behavior:smooth}
body.site-body{
  margin:0;
  font-family:"PingFang SC","Hiragino Sans GB","Microsoft YaHei",system-ui,-apple-system,"Segoe UI",sans-serif;
  font-size:16px;
  line-height:1.75;
  color:var(--c-text);
  background:var(--c-bg);
  -webkit-font-smoothing:antialiased;
}
img{display:block;max-width:100%}
a{color:inherit;text-decoration:none}
button,input,select,textarea{font:inherit;color:inherit}
h1,h2,h3,h4,p,ul,ol{margin:0;padding:0}
ul,ol{list-style:none}
a:focus-visible,button:focus-visible,summary:focus-visible,input:focus-visible{outline:2px solid var(--c-primary);outline-offset:2px}
.container-page{width:100%;max-width:1200px;margin:0 auto;padding:0 24px}
.section{padding:80px 0}
.section-tight{padding:56px 0}
.section-alt{background:var(--c-bg-alt)}
.eyebrow{display:inline-block;font-size:13px;font-weight:600;letter-spacing:.06em;color:var(--c-primary);background:var(--c-primary-tint);padding:6px 14px;border-radius:999px}
.section-head{display:flex;align-items:flex-end;justify-content:space-between;gap:24px;flex-wrap:wrap;margin-bottom:36px}
.section-head h2{font-size:30px;line-height:1.35;font-weight:700;color:var(--c-ink);letter-spacing:-.01em}
.section-sub{margin-top:12px;font-size:15px;line-height:1.8;color:var(--c-muted);max-width:640px}
.text-link{display:inline-flex;align-items:center;gap:6px;font-size:15px;font-weight:600;color:var(--c-primary);white-space:nowrap}
.text-link span{transition:transform .18s ease}
.text-link:hover span{transform:translateX(3px)}
.text-link:hover{text-decoration:underline;text-underline-offset:4px}

/* 顶部导航 */
.site-header{position:sticky;top:0;z-index:50;background:#fff}
.topbar{border-bottom:1px solid var(--c-line);background:#fff}
.topbar-inner{display:flex;align-items:center;gap:20px;height:64px}
.brand{display:inline-flex;align-items:center;gap:10px;flex:none}
.brand-mark{position:relative;width:20px;height:20px;border-radius:6px;background:var(--c-primary);flex:none}
.brand-mark::after{content:"";position:absolute;right:3px;top:3px;width:5px;height:5px;border-radius:50%;background:var(--c-star)}
.brand-text{font-size:19px;font-weight:700;color:var(--c-ink);letter-spacing:-.01em}
.topbar-search{position:relative;flex:1;max-width:420px;display:none}
.topbar-search svg{position:absolute;left:13px;top:50%;transform:translateY(-50%);color:var(--c-muted)}
.topbar-search input{width:100%;height:40px;padding:0 16px 0 40px;border:1px solid var(--c-line);border-radius:10px;background:var(--c-bg-alt);font-size:14px;transition:border-color .18s ease,box-shadow .18s ease,background .18s ease}
.topbar-search input::placeholder{color:var(--c-muted)}
.topbar-search input:focus{outline:none;background:#fff;border-color:var(--c-primary);box-shadow:0 0 0 3px rgba(31,78,140,.12)}
.topbar-actions{margin-left:auto;display:flex;align-items:center;gap:12px}
.nav-toggle{display:inline-flex;align-items:center;justify-content:center;width:44px;height:44px;border:1px solid var(--c-line);border-radius:var(--r-btn);background:#fff;color:var(--c-ink);transition:background .18s ease,border-color .18s ease}
.nav-toggle:hover{background:var(--c-primary-tint);border-color:rgba(31,78,140,.28)}
.mobile-menu{display:none;border-bottom:1px solid var(--c-line);background:#fff;padding:8px 0 16px}
.mobile-menu.is-open{display:block}
.mobile-menu a{display:block;padding:13px 0;font-size:15px;color:var(--c-text);border-bottom:1px solid var(--c-line)}
.mobile-menu a:last-child{border-bottom:0}
.mobile-menu a:hover{color:var(--c-primary)}
.channelbar{border-bottom:1px solid var(--c-line);background:var(--c-bg-alt)}
.channel-inner{display:flex;align-items:center;gap:10px;height:46px;overflow-x:auto;scrollbar-width:none;-ms-overflow-style:none}
.channel-inner::-webkit-scrollbar{display:none}
.chan{flex:none;display:inline-flex;align-items:center;height:32px;padding:0 16px;border-radius:999px;font-size:14px;color:var(--c-muted);transition:background .18s ease,color .18s ease}
.chan:hover{background:var(--c-primary-tint);color:var(--c-primary)}
.chan.is-active{background:var(--c-primary);color:#fff;font-weight:600}

/* 按钮 */
.btn{display:inline-flex;align-items:center;justify-content:center;gap:8px;height:44px;padding:0 24px;border-radius:var(--r-btn);border:1px solid transparent;font-size:15px;font-weight:600;background:transparent;cursor:pointer;transition:background .18s ease,color .18s ease,transform .18s ease,box-shadow .18s ease,border-color .18s ease}
.btn-primary{background:var(--c-primary);color:#fff}
.btn-primary:hover{background:var(--c-primary-deep);transform:translateY(-1px);box-shadow:0 12px 22px -12px rgba(22,58,107,.6)}
.btn-primary:active{transform:translateY(0);box-shadow:none}
.btn-ghost{border-color:var(--c-primary);color:var(--c-primary)}
.btn-ghost:hover{background:var(--c-primary-tint)}
.btn-light{background:#fff;color:var(--c-primary)}
.btn-light:hover{background:#EAF1FA;transform:translateY(-1px)}
.btn-outline-light{border-color:rgba(255,255,255,.55);color:#fff}
.btn-outline-light:hover{background:rgba(255,255,255,.14)}

/* 分类页头 */
.page-hero{
  background-color:var(--c-primary-deep);
  background-image:linear-gradient(115deg,rgba(22,58,107,.9),rgba(31,78,140,.72)),url("/assets/images/backpic/back-2.png");
  background-size:cover;
  background-position:center;
  color:#fff;
  padding:60px 0 56px;
}
.page-hero .hero-tag{display:inline-flex;align-items:center;gap:8px;font-size:13px;font-weight:600;padding:6px 14px;border-radius:999px;background:rgba(255,255,255,.14);color:#EAF1FA}
.page-hero h1{font-size:42px;line-height:1.25;font-weight:700;letter-spacing:-.01em;color:#fff;margin-top:18px}
.page-hero p{margin-top:16px;max-width:760px;font-size:16px;line-height:1.85;color:#DCE6F6}
.anchor-row{display:flex;flex-wrap:wrap;gap:10px;margin-top:26px}
.anchor-row a{padding:7px 15px;border-radius:999px;border:1px solid rgba(255,255,255,.3);background:rgba(255,255,255,.08);font-size:13px;color:#E6EDF9;transition:background .18s ease,color .18s ease}
.anchor-row a:hover{background:#fff;color:var(--c-primary);border-color:#fff}

/* 卡片与网格 */
.card{background:#fff;border:1px solid var(--c-line);border-radius:var(--r-card);padding:24px;box-shadow:var(--sh-1);transition:transform .18s ease,box-shadow .18s ease,border-color .18s ease}
.card:hover{transform:translateY(-2px);border-color:rgba(31,78,140,.28);box-shadow:var(--sh-2)}
.grid{display:grid;gap:24px}
.grid-2{grid-template-columns:repeat(2,1fr)}
.grid-3{grid-template-columns:repeat(3,1fr)}
.grid-4{grid-template-columns:repeat(4,1fr)}
.feature-split{display:grid;grid-template-columns:5fr 7fr;gap:24px;align-items:stretch}
.media-card{background:#fff;border:1px solid var(--c-line);border-radius:var(--r-card);overflow:hidden;box-shadow:var(--sh-1);display:flex;flex-direction:column}
.media-card img{width:100%;height:100%;min-height:280px;object-fit:cover;aspect-ratio:4/3}
.media-card figcaption{padding:16px 20px;font-size:13px;color:var(--c-muted);background:#fff}
.feature-item .num{display:block;font-size:13px;font-weight:700;color:var(--c-muted);letter-spacing:.08em}
.feature-item h3{margin-top:12px;font-size:19px;font-weight:600;color:var(--c-ink);line-height:1.5}
.feature-item p{margin-top:10px;font-size:14px;line-height:1.8;color:var(--c-muted)}

/* 图文交替 */
.scene{display:grid;grid-template-columns:1fr 1fr;gap:48px;align-items:center;margin-bottom:56px}
.scene:last-child{margin-bottom:0}
.scene.reverse .scene-media{order:2}
.scene-media img{width:100%;aspect-ratio:4/3;object-fit:cover;border-radius:16px;box-shadow:var(--sh-1)}
.scene-body h3{font-size:24px;font-weight:700;color:var(--c-ink);line-height:1.4}
.scene-body p{margin-top:14px;font-size:16px;line-height:1.9;color:var(--c-text)}
.check-list{margin-top:18px}
.check-list li{position:relative;padding-left:26px;margin-top:12px;font-size:15px;color:var(--c-text)}
.check-list li::before{content:"✓";position:absolute;left:0;top:0;color:var(--c-accent);font-weight:700}

/* 步骤 */
.step{position:relative;background:#fff;border:1px solid var(--c-line);border-radius:var(--r-card);padding:26px;box-shadow:var(--sh-1);transition:transform .18s ease,box-shadow .18s ease,border-color .18s ease}
.step:hover{transform:translateY(-2px);border-color:rgba(31,78,140,.28);box-shadow:var(--sh-2)}
.step .step-num{font-size:13px;font-weight:700;letter-spacing:.08em;color:var(--c-star)}
.step h3{margin-top:14px;font-size:18px;font-weight:600;color:var(--c-ink)}
.step p{margin-top:10px;font-size:14px;line-height:1.8;color:var(--c-muted)}

/* 数据卡 */
.stat{background:#fff;border:1px solid var(--c-line);border-radius:var(--r-card);padding:28px;box-shadow:var(--sh-1)}
.stat-value{font-size:40px;font-weight:700;line-height:1.1;color:var(--c-primary);font-variant-numeric:tabular-nums;letter-spacing:-.01em}
.stat-value em{font-size:16px;font-weight:600;font-style:normal;margin-left:4px}
.stat-label{margin-top:12px;font-size:15px;font-weight:600;color:var(--c-ink)}
.stat-note{margin-top:6px;font-size:13px;line-height:1.7;color:var(--c-muted)}
.stat-hint{margin-top:22px;font-size:13px;color:var(--c-muted)}

/* FAQ */
.faq-layout{display:grid;grid-template-columns:4fr 8fr;gap:48px;align-items:start}
.faq-side h2{font-size:28px;font-weight:700;color:var(--c-ink);line-height:1.4}
.faq-side p{margin-top:14px;font-size:15px;line-height:1.85;color:var(--c-muted)}
.faq-side .btn{margin-top:22px}
.faq-list details{background:#fff;border:1px solid var(--c-line);border-radius:12px;margin-bottom:12px;transition:background .18s ease,border-color .18s ease}
.faq-list details:hover{border-color:rgba(31,78,140,.28)}
.faq-list details[open]{border-left:3px solid var(--c-primary);background:#F8FAFE}
.faq-list summary{display:flex;align-items:center;justify-content:space-between;gap:16px;min-height:64px;padding:18px 20px;font-size:16px;font-weight:600;color:var(--c-ink);cursor:pointer;list-style:none}
.faq-list summary::-webkit-details-marker{display:none}
.faq-list summary::after{content:"";flex:none;width:8px;height:8px;border-right:2px solid var(--c-muted);border-bottom:2px solid var(--c-muted);transform:rotate(-45deg);transition:transform .2s ease,border-color .2s ease}
.faq-list details[open] summary::after{transform:rotate(45deg);border-color:var(--c-primary)}
.faq-answer{padding:0 20px 20px;font-size:15px;line-height:1.85;color:var(--c-text)}

/* CTA */
.cta-band{background:var(--c-primary);border-radius:18px;padding:48px;color:#fff;display:flex;align-items:center;justify-content:space-between;gap:32px;flex-wrap:wrap}
.cta-band h2{font-size:28px;font-weight:700;line-height:1.4;color:#fff}
.cta-band p{margin-top:12px;font-size:15px;line-height:1.8;color:#D6E2F5;max-width:560px}
.cta-actions{display:flex;gap:14px;flex-wrap:wrap}

/* 页脚 */
.site-footer{margin-top:80px;background:#14264A;color:#C9D4E8;padding:56px 0 0}
.footer-top{display:grid;grid-template-columns:1.6fr 1fr 1fr 1.2fr;gap:32px;padding-bottom:40px}
.footer-brand .brand-text{color:#fff}
.footer-brand p{margin-top:16px;max-width:330px;font-size:14px;line-height:1.8;color:#A9B7D0}
.footer-brand .mail{margin-top:12px;font-size:14px;color:#C9D4E8}
.footer-col h4{font-size:15px;font-weight:600;color:#fff;margin-bottom:14px}
.footer-col a{display:block;padding:6px 0;font-size:14px;color:#C9D4E8;transition:color .18s ease}
.footer-col a:hover{color:#fff}
.footer-sub input{width:100%;height:42px;padding:0 14px;margin-bottom:12px;border-radius:var(--r-btn);border:1px solid rgba(255,255,255,.18);background:rgba(255,255,255,.06);color:#fff;font-size:14px}
.footer-sub input::placeholder{color:#8C9CBB}
.footer-sub input:focus{outline:none;border-color:#5D8BD0;background:rgba(255,255,255,.1)}
.footer-sub .btn{width:100%;background:#2C5FA8;color:#fff}
.footer-sub .btn:hover{background:#3570C2}
.footer-bottom{display:flex;align-items:center;justify-content:space-between;gap:16px;flex-wrap:wrap;padding:20px 0;border-top:1px solid rgba(255,255,255,.12);font-size:13px;color:#93A3C0}

@media (min-width:1024px){
  .topbar-search{display:block}
  .nav-toggle{display:none}
}
@media (max-width:1024px){
  .section{padding:64px 0}
  .grid-4{grid-template-columns:repeat(2,1fr)}
  .grid-3{grid-template-columns:repeat(2,1fr)}
  .feature-split{grid-template-columns:1fr}
  .media-card img{min-height:0;aspect-ratio:16/9}
  .scene{gap:32px;margin-bottom:44px}
  .faq-layout{grid-template-columns:1fr;gap:32px}
  .page-hero h1{font-size:34px}
  .section-head h2,.faq-side h2,.cta-band h2{font-size:25px}
}
@media (max-width:768px){
  .container-page{padding:0 16px}
  .section{padding:48px 0}
  .section-tight{padding:40px 0}
  .page-hero{padding:44px 0 40px}
  .page-hero h1{font-size:28px}
  .page-hero p{font-size:15px}
  .section-head{margin-bottom:26px}
  .section-head h2,.faq-side h2,.cta-band h2{font-size:22px}
  .grid-2,.grid-3,.grid-4{grid-template-columns:1fr}
  .scene{grid-template-columns:1fr;margin-bottom:36px}
  .scene.reverse .scene-media{order:0}
  .scene-body h3{font-size:20px}
  .card{padding:20px}
  .stat{padding:22px}
  .stat-value{font-size:32px}
  .cta-band{padding:32px 24px;border-radius:14px}
  .cta-actions{width:100%}
  .cta-actions .btn{width:100%}
  .footer-top{grid-template-columns:1fr;gap:26px;padding-bottom:28px}
  .site-footer{margin-top:56px;padding-top:44px}
  .footer-bottom{flex-direction:column;align-items:flex-start}
}

/* roulang page: category4 */
:root{
  --c-primary:#1F4E8C;
  --c-primary-deep:#163A6B;
  --c-primary-tint:#EAF1FA;
  --c-accent:#2FA69A;
  --c-star:#E4B34A;
  --c-ink:#16203A;
  --c-text:#2A3448;
  --c-muted:#6B7488;
  --c-line:#E4E9F2;
  --c-bg:#FFFFFF;
  --c-bg-alt:#F6F8FC;
  --c-danger:#D9483B;
  --sh-1:0 1px 2px rgba(22,32,58,.05),0 10px 24px -14px rgba(22,32,58,.18);
  --sh-2:0 2px 6px rgba(22,32,58,.07),0 18px 34px -16px rgba(22,32,58,.26);
  --r-card:14px;
  --r-btn:10px;
}

*{box-sizing:border-box;}
html{scroll-behavior:smooth;}
body{
  margin:0;
  font-family:"PingFang SC","Hiragino Sans GB","Microsoft YaHei",system-ui,-apple-system,"Segoe UI",sans-serif;
  font-size:16px;
  line-height:1.9;
  color:var(--c-text);
  background:var(--c-bg);
  -webkit-font-smoothing:antialiased;
}
h1,h2,h3,h4{color:var(--c-ink);margin:0;font-weight:700;line-height:1.3;}
p{margin:0;}
a{color:inherit;text-decoration:none;}
img{display:block;max-width:100%;}
button,input,select,textarea{font:inherit;color:inherit;}
ul,ol{margin:0;padding:0;list-style:none;}
table{border-collapse:collapse;}

.container-page{
  width:100%;
  max-width:1200px;
  margin:0 auto;
  padding:0 24px;
}
.section{padding:80px 0;}
.section-alt{background:var(--c-bg-alt);}
.eyebrow{
  display:inline-block;
  font-size:13px;
  font-weight:600;
  letter-spacing:.08em;
  color:var(--c-primary);
  background:var(--c-primary-tint);
  border-radius:999px;
  padding:4px 12px;
  margin-bottom:16px;
}
.section-head{
  display:flex;
  align-items:flex-end;
  justify-content:space-between;
  gap:24px;
  margin-bottom:36px;
}
.section-head h2{font-size:29px;max-width:640px;}
.section-head p.lead{font-size:15px;color:var(--c-muted);margin-top:10px;max-width:620px;}
.text-link{
  display:inline-flex;
  align-items:center;
  gap:6px;
  font-size:15px;
  font-weight:600;
  color:var(--c-primary);
  white-space:nowrap;
  transition:color .18s ease;
}
.text-link i{transition:transform .18s ease;font-size:13px;}
.text-link:hover{color:var(--c-primary-deep);text-decoration:underline;}
.text-link:hover i{transform:translateX(3px);}

/* 按钮 */
.btn{
  display:inline-flex;
  align-items:center;
  justify-content:center;
  gap:8px;
  min-height:44px;
  padding:12px 24px;
  border-radius:var(--r-btn);
  border:1px solid transparent;
  font-size:15px;
  font-weight:600;
  cursor:pointer;
  transition:background-color .18s ease,color .18s ease,border-color .18s ease,transform .18s ease,box-shadow .18s ease;
  background:#fff;
  color:var(--c-primary);
  border-color:var(--c-line);
}
.btn:hover{transform:translateY(-1px);}
.btn:active{transform:translateY(0);}
.btn:focus-visible{outline:2px solid var(--c-primary);outline-offset:2px;}
.btn-primary{
  background:var(--c-primary);
  color:#fff;
  border-color:var(--c-primary);
  box-shadow:0 8px 18px -12px rgba(31,78,140,.7);
}
.btn-primary:hover{background:var(--c-primary-deep);border-color:var(--c-primary-deep);box-shadow:0 12px 22px -14px rgba(22,58,107,.85);}
.btn-ghost{
  background:transparent;
  color:var(--c-primary);
  border-color:rgba(31,78,140,.45);
}
.btn-ghost:hover{background:var(--c-primary-tint);border-color:var(--c-primary);}
.btn-light{
  background:#fff;
  color:var(--c-primary);
  border-color:#fff;
}
.btn-light:hover{background:var(--c-primary-tint);}
.btn-outline-light{
  background:transparent;
  color:#fff;
  border-color:rgba(255,255,255,.6);
}
.btn-outline-light:hover{background:rgba(255,255,255,.14);border-color:#fff;}

/* 标签 */
.pill{
  display:inline-flex;
  align-items:center;
  gap:6px;
  font-size:12.5px;
  font-weight:600;
  padding:5px 12px;
  border-radius:999px;
  background:var(--c-primary-tint);
  color:var(--c-primary);
  line-height:1.5;
}
.pill-light{background:rgba(255,255,255,.16);color:#fff;border:1px solid rgba(255,255,255,.4);}
.pill-accent{background:rgba(47,166,154,.12);color:#1F7F76;}
.pill-muted{background:var(--c-bg-alt);color:var(--c-muted);border:1px solid var(--c-line);}

/* 头部 */
.site-header{
  position:sticky;
  top:0;
  z-index:50;
  background:#fff;
  border-bottom:1px solid var(--c-line);
}
.header-inner{
  display:flex;
  align-items:center;
  gap:20px;
  height:64px;
}
.brand{display:inline-flex;align-items:center;gap:10px;flex:0 0 auto;}
.brand-mark{
  width:20px;height:20px;border-radius:6px;
  background:var(--c-primary);
  position:relative;
  box-shadow:inset 0 0 0 2px rgba(255,255,255,.85);
}
.brand-mark::after{
  content:"";
  position:absolute;right:-3px;top:-3px;
  width:6px;height:6px;border-radius:50%;
  background:var(--c-star);
}
.brand-text{font-size:19px;font-weight:700;color:var(--c-ink);letter-spacing:.01em;}
.search-box{
  flex:1 1 auto;
  max-width:420px;
  display:flex;
  align-items:center;
  gap:10px;
  height:40px;
  padding:0 14px;
  border-radius:10px;
  background:var(--c-bg-alt);
  border:1px solid var(--c-line);
  transition:border-color .18s ease,box-shadow .18s ease;
}
.search-box:focus-within{border-color:var(--c-primary);box-shadow:0 0 0 2px var(--c-primary-tint);}
.search-box i{color:var(--c-muted);font-size:14px;}
.search-box input{
  flex:1 1 auto;
  border:0;
  outline:0;
  background:transparent;
  font-size:14px;
}
.search-box input::placeholder{color:var(--c-muted);}
.header-actions{display:flex;align-items:center;gap:12px;margin-left:auto;}
.nav-toggle{
  display:none;
  width:44px;height:44px;
  align-items:center;justify-content:center;
  border-radius:10px;
  border:1px solid var(--c-line);
  background:#fff;
  color:var(--c-ink);
  cursor:pointer;
}
.nav-toggle:hover{border-color:var(--c-primary);color:var(--c-primary);}
.nav-toggle:focus-visible{outline:2px solid var(--c-primary);outline-offset:2px;}

/* 频道行 */
.channelbar{
  background:var(--c-bg-alt);
  border-bottom:1px solid var(--c-line);
}
.channel-inner{
  display:flex;
  align-items:center;
  gap:8px;
  height:46px;
  overflow-x:auto;
  scrollbar-width:none;
}
.channel-inner::-webkit-scrollbar{display:none;}
.chan{
  flex:0 0 auto;
  padding:8px 16px;
  border-radius:999px;
  font-size:14px;
  color:var(--c-muted);
  transition:background-color .18s ease,color .18s ease;
  min-height:36px;
  display:inline-flex;
  align-items:center;
}
.chan:hover{background:var(--c-primary-tint);color:var(--c-primary);}
.chan.is-active{background:var(--c-primary);color:#fff;}
.chan:focus-visible{outline:2px solid var(--c-primary);outline-offset:2px;}

/* 分类页头 */
.cat-hero{
  position:relative;
  overflow:hidden;
  background:var(--c-primary-deep);
}
.cat-hero-bg{
  position:absolute;inset:0;
  width:100%;height:100%;
  object-fit:cover;
  opacity:.55;
}
.cat-hero-mask{
  position:absolute;inset:0;
  background:linear-gradient(90deg,rgba(31,78,140,.88) 0%,rgba(22,58,107,.78) 55%,rgba(22,38,74,.68) 100%);
}
.star-dots{
  position:absolute;inset:0;
  background-image:radial-gradient(circle,rgba(255,255,255,.55) 1px,transparent 1.4px);
  background-size:120px 120px;
  opacity:.06;
}
.cat-hero-inner{
  position:relative;
  z-index:2;
  padding:56px 24px 52px;
  min-height:240px;
  display:flex;
  flex-direction:column;
  justify-content:center;
}
.cat-hero h1{
  color:#fff;
  font-size:42px;
  line-height:1.25;
  margin:16px 0 14px;
  max-width:760px;
}
.cat-hero .sub{
  color:rgba(255,255,255,.88);
  font-size:17px;
  max-width:680px;
  line-height:1.8;
}
.anchor-row{
  display:flex;
  flex-wrap:wrap;
  gap:10px;
  margin-top:24px;
}
.anchor-row a{
  font-size:13.5px;
  font-weight:600;
  color:#fff;
  border:1px solid rgba(255,255,255,.4);
  border-radius:999px;
  padding:7px 15px;
  transition:background-color .18s ease,border-color .18s ease;
  min-height:36px;
  display:inline-flex;
  align-items:center;
}
.anchor-row a:hover{background:rgba(255,255,255,.16);border-color:#fff;}

/* 卡片 */
.card{
  background:#fff;
  border:1px solid var(--c-line);
  border-radius:var(--r-card);
  padding:24px;
  box-shadow:var(--sh-1);
  transition:transform .18s ease,box-shadow .18s ease,border-color .18s ease;
  height:100%;
}
.card:hover{
  transform:translateY(-2px);
  border-color:rgba(31,78,140,.28);
  box-shadow:var(--sh-2);
}
.card h3{font-size:19px;margin-bottom:10px;}
.card p{font-size:15px;color:var(--c-text);}
.card .num{
  font-size:12px;
  font-weight:700;
  letter-spacing:.12em;
  color:var(--c-muted);
  display:block;
  margin-bottom:14px;
}
.icon-box{
  width:40px;height:40px;
  border-radius:10px;
  display:inline-flex;
  align-items:center;justify-content:center;
  background:var(--c-primary-tint);
  color:var(--c-primary);
  font-size:16px;
  margin-bottom:16px;
}
.icon-box.accent{background:rgba(47,166,154,.12);color:#1F7F76;}
.card-main{
  display:grid;
  grid-template-columns:1fr 1fr;
  gap:24px;
  align-items:center;
  padding:28px;
}
.card-main figure{margin:0;}
.card-main img{
  width:100%;
  aspect-ratio:4/3;
  object-fit:cover;
  border-radius:12px;
}
.card-ghost{
  background:var(--c-bg-alt);
  border:1px dashed rgba(31,78,140,.35);
  box-shadow:none;
}
.cap-list{margin-top:14px;display:flex;flex-direction:column;gap:8px;}
.cap-list li{
  font-size:14px;
  color:var(--c-text);
  display:flex;
  gap:8px;
  align-items:flex-start;
}
.cap-list li i{color:var(--c-accent);font-size:12px;margin-top:7px;}

/* 流程 */
.flow{
  display:grid;
  grid-template-columns:repeat(4,1fr);
  gap:0;
  border:1px solid var(--c-line);
  border-radius:var(--r-card);
  overflow:hidden;
  background:#fff;
  box-shadow:var(--sh-1);
}
.flow-step{
  padding:28px 24px;
  border-right:1px solid var(--c-line);
  position:relative;
}
.flow-step:last-child{border-right:0;}
.flow-step span.step-num{
  font-size:13px;
  font-weight:700;
  color:var(--c-primary);
  font-variant-numeric:tabular-nums;
}
.flow-step h3{font-size:17px;margin:12px 0 8px;}
.flow-step p{font-size:14px;color:var(--c-muted);line-height:1.8;}

/* 图文交替 */
.split{
  display:grid;
  grid-template-columns:5fr 6fr;
  gap:48px;
  align-items:center;
}
.split.reverse{grid-template-columns:6fr 5fr;}
.split figure{margin:0;}
.split img{
  width:100%;
  aspect-ratio:16/11;
  object-fit:cover;
  border-radius:16px;
  box-shadow:var(--sh-1);
}
.split h2{font-size:28px;margin-bottom:16px;}
.split p{font-size:15.5px;margin-bottom:14px;}

/* 字段说明列表 */
.field-list{
  border-top:1px solid var(--c-line);
}
.field-row{
  display:grid;
  grid-template-columns:200px 1fr auto;
  gap:20px;
  align-items:center;
  padding:18px 0;
  border-bottom:1px solid var(--c-line);
}
.field-row dt{
  font-size:15px;
  font-weight:600;
  color:var(--c-ink);
}
.field-row dd{
  margin:0;
  font-size:14.5px;
  color:var(--c-text);
}
.field-row .tag{
  font-size:12.5px;
  color:var(--c-muted);
  border:1px solid var(--c-line);
  border-radius:999px;
  padding:4px 10px;
  white-space:nowrap;
  background:var(--c-bg-alt);
}

/* 场景网格 */
.scene-grid{
  display:grid;
  grid-template-columns:repeat(2,1fr);
  gap:24px;
}
.scene-item{
  display:flex;
  gap:18px;
  padding:24px;
  background:#fff;
  border:1px solid var(--c-line);
  border-radius:var(--r-card);
  box-shadow:var(--sh-1);
  transition:transform .18s ease,box-shadow .18s ease,border-color .18s ease;
}
.scene-item:hover{transform:translateY(-2px);border-color:rgba(31,78,140,.28);box-shadow:var(--sh-2);}
.scene-item h3{font-size:17px;margin-bottom:8px;}
.scene-item p{font-size:14.5px;color:var(--c-text);}

/* 数据条 */
.bar-group{
  border-top:1px solid var(--c-line);
  padding-top:22px;
  margin-top:22px;
}
.bar-group:first-of-type{border-top:0;padding-top:0;margin-top:0;}
.bar-row{
  display:grid;
  grid-template-columns:150px 1fr;
  gap:20px;
  align-items:center;
  padding:10px 0;
}
.bar-row .label{font-size:14px;color:var(--c-muted);}
.bar-track{display:flex;flex-direction:column;gap:8px;}
.bar-line{display:flex;align-items:center;gap:14px;}
.bar{
  flex:1 1 auto;
  height:10px;
  border-radius:999px;
  background:#D8DEE9;
  overflow:hidden;
}
.bar span{
  display:block;
  height:100%;
  border-radius:999px;
  background:var(--c-primary);
}
.bar.accent span{background:var(--c-accent);}
.bar-value{
  font-size:13.5px;
  font-weight:600;
  color:var(--c-ink);
  font-variant-numeric:tabular-nums;
  white-space:nowrap;
}

/* FAQ */
.faq-layout{display:grid;grid-template-columns:4fr 8fr;gap:48px;align-items:start;}
.faq-side h2{font-size:28px;margin-bottom:14px;}
.faq-side p{font-size:15px;color:var(--c-muted);margin-bottom:22px;}
.faq-item{
  border:1px solid var(--c-line);
  border-radius:12px;
  background:#fff;
  margin-bottom:12px;
  overflow:hidden;
  transition:border-color .18s ease,background-color .18s ease;
}
.faq-item[open]{
  border-left:3px solid var(--c-primary);
  background:#F8FAFE;
}
.faq-item summary{
  list-style:none;
  cursor:pointer;
  padding:18px 20px;
  font-size:16px;
  font-weight:600;
  color:var(--c-ink);
  display:flex;
  align-items:center;
  justify-content:space-between;
  gap:16px;
  min-height:64px;
}
.faq-item summary::-webkit-details-marker{display:none;}
.faq-item summary i{
  color:var(--c-muted);
  font-size:14px;
  transition:transform .18s ease,color .18s ease;
  flex:0 0 auto;
}
.faq-item[open] summary i{transform:rotate(90deg);color:var(--c-primary);}
.faq-item summary:focus-visible{outline:2px solid var(--c-primary);outline-offset:-4px;}
.faq-answer{
  padding:0 20px 20px;
  font-size:15px;
  line-height:1.8;
  color:var(--c-text);
}

/* CTA */
.cta-band{
  background:var(--c-primary);
  border-radius:16px;
  padding:44px 48px;
  display:flex;
  align-items:center;
  justify-content:space-between;
  gap:32px;
  position:relative;
  overflow:hidden;
}
.cta-band::after{
  content:"";
  position:absolute;
  inset:0;
  background-image:radial-gradient(circle,rgba(255,255,255,.6) 1px,transparent 1.3px);
  background-size:110px 110px;
  opacity:.05;
  pointer-events:none;
}
.cta-band h2{color:#fff;font-size:26px;margin-bottom:10px;}
.cta-band p{color:rgba(255,255,255,.86);font-size:15px;max-width:560px;}
.cta-actions{display:flex;gap:12px;flex-wrap:wrap;position:relative;z-index:2;}

/* 页脚 */
.site-footer{background:#14264A;color:#C9D4E8;margin-top:80px;}
.footer-top{
  display:grid;
  grid-template-columns:4fr 2.5fr 2.5fr 3fr;
  gap:36px;
  padding:64px 0 40px;
}
.footer-brand p{font-size:14px;line-height:1.9;margin-top:16px;max-width:340px;}
.footer-brand .mail{color:#9FB3D4;font-size:13.5px;}
.site-footer .brand-text{color:#fff;}
.site-footer .brand-mark{background:#2F5EA8;}
.footer-col h4{color:#fff;font-size:15px;margin-bottom:16px;}
.footer-col a{
  display:block;
  font-size:14px;
  padding:5px 0;
  color:#C9D4E8;
  transition:color .18s ease;
}
.footer-col a:hover{color:#fff;}
.footer-sub input{
  width:100%;
  height:42px;
  border-radius:10px;
  border:1px solid rgba(255,255,255,.22);
  background:rgba(255,255,255,.06);
  padding:0 14px;
  font-size:14px;
  color:#fff;
  outline:0;
}
.footer-sub input::placeholder{color:#8FA3C6;}
.footer-sub input:focus{border-color:#7FA6E0;box-shadow:0 0 0 2px rgba(127,166,224,.25);}
.footer-sub .btn{
  margin-top:12px;
  width:100%;
  background:var(--c-primary);
  color:#fff;
  border-color:var(--c-primary);
}
.footer-sub .btn:hover{background:#2A5FA6;}
.footer-bottom{
  border-top:1px solid rgba(255,255,255,.12);
  padding:22px 0 32px;
  display:flex;
  justify-content:space-between;
  gap:16px;
  flex-wrap:wrap;
  font-size:13.5px;
  color:#9FB3D4;
}

@media (max-width:1024px){
  .search-box{display:none;}
  .section{padding:64px 0;}
  .cat-hero h1{font-size:34px;}
  .flow{grid-template-columns:repeat(2,1fr);}
  .flow-step:nth-child(2){border-right:0;}
  .flow-step:nth-child(1),.flow-step:nth-child(2){border-bottom:1px solid var(--c-line);}
  .split,.split.reverse{grid-template-columns:1fr;gap:32px;}
  .split.reverse figure{order:2;}
  .faq-layout{grid-template-columns:1fr;gap:32px;}
  .footer-top{grid-template-columns:repeat(2,1fr);gap:32px;}
  .card-main{grid-template-columns:1fr;}
}

@media (max-width:768px){
  .container-page{padding:0 16px;}
  .section{padding:48px 0;}
  .section-head{flex-direction:column;align-items:flex-start;gap:14px;margin-bottom:26px;}
  .section-head h2{font-size:22px;}
  .cat-hero-inner{padding:40px 16px 38px;min-height:200px;}
  .cat-hero h1{font-size:28px;}
  .cat-hero .sub{font-size:15px;}
  .nav-toggle{display:inline-flex;}
  .channelbar{display:none;}
  .channelbar.is-open{display:block;}
  .channel-inner{
    height:auto;
    flex-wrap:wrap;
    padding:12px 0;
    overflow:visible;
  }
  .chan{border:1px solid var(--c-line);background:#fff;}
  .header-actions .btn{padding:10px 16px;font-size:14px;}
  .scene-grid{grid-template-columns:1fr;}
  .flow{grid-template-columns:1fr;}
  .flow-step{border-right:0;border-bottom:1px solid var(--c-line);}
  .flow-step:last-child{border-bottom:0;}
  .field-row{grid-template-columns:1fr;gap:6px;}
  .field-row .tag{justify-self:start;}
  .cta-band{flex-direction:column;align-items:flex-start;padding:32px 24px;}
  .cta-actions{width:100%;}
  .cta-actions .btn{width:100%;}
  .footer-top{grid-template-columns:1fr;padding:44px 0 28px;}
  .bar-row{grid-template-columns:1fr;gap:6px;}
  .card{padding:20px;}
}

@media (min-width:769px) and (max-width:1023px){
  .card-main{grid-template-columns:1fr;}
}

/* roulang page: category5 */
:root{
  --c-primary:#1F4E8C;
  --c-primary-deep:#163A6B;
  --c-primary-tint:#EAF1FA;
  --c-accent:#2FA69A;
  --c-star:#E4B34A;
  --c-ink:#16203A;
  --c-text:#2A3448;
  --c-muted:#6B7488;
  --c-line:#E4E9F2;
  --c-bg:#FFFFFF;
  --c-bg-alt:#F6F8FC;
  --c-danger:#D9483B;
  --sh-1:0 1px 2px rgba(22,32,58,.05), 0 10px 24px -14px rgba(22,32,58,.18);
  --sh-2:0 2px 8px rgba(22,32,58,.07), 0 18px 34px -14px rgba(22,32,58,.24);
  --r-sm:8px;
  --r-md:10px;
  --r-lg:14px;
  --r-xl:16px;
}
*,*::before,*::after{box-sizing:border-box}
html{-webkit-text-size-adjust:100%;scroll-behavior:smooth}
body{
  margin:0;
  font-family:"PingFang SC","Hiragino Sans GB","Microsoft YaHei",system-ui,-apple-system,"Segoe UI",sans-serif;
  font-size:16.5px;
  line-height:1.85;
  color:var(--c-text);
  background:var(--c-bg);
}
img{max-width:100%;display:block}
a{color:inherit;text-decoration:none}
button,input,select,textarea{font:inherit;color:inherit}
h1,h2,h3,h4{margin:0;color:var(--c-ink);line-height:1.3;font-weight:700}
p{margin:0}
ul,ol{margin:0;padding:0;list-style:none}
figure{margin:0}
.container-page{width:100%;max-width:1200px;margin:0 auto;padding:0 24px}
.num{font-variant-numeric:tabular-nums;letter-spacing:-.01em}

/* ---------- 顶部导航 ---------- */
.topbar{position:sticky;top:0;z-index:50;background:#fff;border-bottom:1px solid var(--c-line)}
.topbar-inner{display:flex;align-items:center;gap:24px;height:64px}
.brand{display:inline-flex;align-items:center;gap:10px;font-weight:700;font-size:19px;color:var(--c-ink);letter-spacing:-.01em;flex:none}
.brand-mark{width:20px;height:20px;border-radius:6px;background:var(--c-primary);position:relative;flex:none}
.brand-mark::after{
  content:"";position:absolute;inset:0;border-radius:6px;
  background-image:
    radial-gradient(circle at 30% 30%, #fff 1.4px, transparent 1.6px),
    radial-gradient(circle at 70% 68%, #fff 1.4px, transparent 1.6px),
    radial-gradient(circle at 42% 74%, var(--c-star) 1.4px, transparent 1.6px);
}
.search-box{position:relative;flex:1;max-width:400px;display:none}
.search-box::before{
  content:"";position:absolute;left:14px;top:50%;width:12px;height:12px;
  border:2px solid #9AA5BA;border-radius:50%;transform:translateY(-58%);z-index:1;pointer-events:none;
}
.search-box::after{
  content:"";position:absolute;left:24px;top:50%;width:7px;height:2px;border-radius:2px;
  background:#9AA5BA;transform:translateY(2px) rotate(45deg);z-index:1;pointer-events:none;
}
.search-box input{
  width:100%;height:40px;border-radius:var(--r-md);border:1px solid var(--c-line);
  background:var(--c-bg-alt);padding:0 14px 0 40px;font-size:14px;outline:none;
  transition:border-color .18s ease, box-shadow .18s ease, background .18s ease;
}
.search-box input::placeholder{color:var(--c-muted)}
.search-box input:focus{background:#fff;border-color:var(--c-primary);box-shadow:0 0 0 2px var(--c-primary-tint)}
.top-actions{margin-left:auto;display:flex;align-items:center;gap:12px;flex:none}
.menu-toggle{
  display:none;width:44px;height:44px;border-radius:var(--r-md);border:1px solid var(--c-line);
  background:#fff;align-items:center;justify-content:center;cursor:pointer;
}
.menu-toggle i{color:var(--c-ink);font-size:16px}

.btn{
  display:inline-flex;align-items:center;justify-content:center;gap:8px;
  height:44px;padding:0 22px;border-radius:var(--r-md);font-weight:600;font-size:15px;
  border:1px solid transparent;cursor:pointer;white-space:nowrap;text-align:center;
  transition:transform .18s ease, background .18s ease, box-shadow .18s ease, border-color .18s ease, color .18s ease;
}
.btn-primary{background:var(--c-primary);color:#fff}
.btn-primary:hover{background:var(--c-primary-deep);transform:translateY(-1px);box-shadow:0 12px 22px -14px rgba(22,58,107,.85)}
.btn-primary:active{transform:translateY(0);box-shadow:none}
.btn-ghost{background:transparent;border-color:var(--c-primary);color:var(--c-primary)}
.btn-ghost:hover{background:var(--c-primary-tint)}
.btn-ghost:active{background:#DCE8F7}
.btn-light{background:#fff;color:var(--c-primary)}
.btn-light:hover{background:#F2F6FC;transform:translateY(-1px)}
.btn-outline-light{background:transparent;border-color:rgba(255,255,255,.6);color:#fff}
.btn-outline-light:hover{background:rgba(255,255,255,.14);border-color:#fff}
.btn:focus-visible,a:focus-visible,button:focus-visible,input:focus-visible,summary:focus-visible{outline:2px solid var(--c-primary);outline-offset:2px}
.menu-toggle:focus-visible{outline:2px solid var(--c-primary);outline-offset:2px}

.channelbar{background:var(--c-bg-alt);border-bottom:1px solid var(--c-line)}
.channel-inner{display:flex;align-items:center;gap:8px;height:46px;overflow-x:auto;scrollbar-width:none;-ms-overflow-style:none}
.channel-inner::-webkit-scrollbar{display:none}
.chan{
  display:inline-flex;align-items:center;height:32px;padding:0 16px;border-radius:999px;
  font-size:14px;color:var(--c-muted);white-space:nowrap;flex:none;
  transition:background .18s ease,color .18s ease;
}
.chan:hover{background:var(--c-primary-tint);color:var(--c-primary)}
.chan.is-active{background:var(--c-primary);color:#fff}
.chan.is-active:hover{background:var(--c-primary-deep);color:#fff}

.mobile-drawer{display:none;border-bottom:1px solid var(--c-line);background:#fff;padding:16px 0 20px}
.mobile-drawer.is-open{display:block}
.mobile-drawer .drawer-search{
  width:100%;height:42px;border-radius:var(--r-md);border:1px solid var(--c-line);
  background:var(--c-bg-alt);padding:0 14px;font-size:14px;outline:none;margin-bottom:12px;
}
.mobile-drawer .drawer-search:focus{border-color:var(--c-primary);background:#fff}
.drawer-links{display:grid;grid-template-columns:1fr 1fr;gap:8px}
.drawer-links a{
  padding:10px 12px;border-radius:var(--r-sm);background:var(--c-bg-alt);
  font-size:14px;color:var(--c-text);border:1px solid var(--c-line);
}
.drawer-links a:hover{background:var(--c-primary-tint);color:var(--c-primary);border-color:rgba(31,78,140,.24)}

/* ---------- 分类页头 ---------- */
.page-hero{
  position:relative;overflow:hidden;color:#fff;
  background-image:linear-gradient(100deg, rgba(22,58,107,.90), rgba(31,78,140,.72)),
    url('/assets/images/backpic/back-2.png');
  background-size:cover;background-position:center;
  padding:52px 0 48px;
}
.page-hero::after{
  content:"";position:absolute;inset:0;pointer-events:none;opacity:.07;
  background-image:radial-gradient(#fff 1.2px, transparent 1.4px);
  background-size:96px 96px;
}
.page-hero .container-page{position:relative;z-index:1}
.page-hero .hero-pill{
  display:inline-flex;align-items:center;gap:8px;height:30px;padding:0 14px;border-radius:999px;
  background:rgba(255,255,255,.16);border:1px solid rgba(255,255,255,.34);
  font-size:13px;font-weight:600;letter-spacing:.04em;
}
.page-hero h1{color:#fff;font-size:40px;margin:16px 0 14px;max-width:820px;letter-spacing:-.01em}
.page-hero .hero-sub{font-size:16.5px;color:rgba(255,255,255,.88);max-width:700px;line-height:1.85}
.anchor-row{display:flex;flex-wrap:wrap;gap:10px;margin-top:24px}
.anchor-link{
  display:inline-flex;align-items:center;height:34px;padding:0 15px;border-radius:999px;
  font-size:14px;background:rgba(255,255,255,.13);border:1px solid rgba(255,255,255,.3);color:#fff;
  transition:background .18s ease,color .18s ease,border-color .18s ease;
}
.anchor-link:hover{background:#fff;color:var(--c-primary);border-color:#fff}

/* ---------- 通用板块 ---------- */
.section{padding:80px 0}
.section-alt{background:var(--c-bg-alt)}
.section-head{display:flex;align-items:flex-end;justify-content:space-between;gap:28px;margin-bottom:40px}
.section-head .head-left{max-width:660px}
.eyebrow{
  display:inline-block;font-size:13px;font-weight:600;letter-spacing:.08em;color:var(--c-primary);
  background:var(--c-primary-tint);padding:5px 13px;border-radius:999px;margin-bottom:14px;
}
h2.section-title{font-size:29px;letter-spacing:-.01em}
.section-sub{margin-top:12px;font-size:15.5px;color:var(--c-muted);line-height:1.8}
.text-link{display:inline-flex;align-items:center;gap:8px;color:var(--c-primary);font-weight:600;font-size:15px;flex:none}
.text-link i{font-size:12px;transition:transform .18s ease}
.text-link:hover{text-decoration:underline;text-underline-offset:4px}
.text-link:hover i{transform:translateX(3px)}

/* ---------- 起步步骤 ---------- */
.step-grid{display:grid;grid-template-columns:repeat(4,1fr);gap:24px}
.step-card{
  background:#fff;border:1px solid var(--c-line);border-radius:var(--r-lg);
  padding:26px 24px;box-shadow:var(--sh-1);
  transition:transform .18s ease, box-shadow .18s ease, border-color .18s ease;
}
.step-card:hover{transform:translateY(-2px);border-color:rgba(31,78,140,.28);box-shadow:var(--sh-2)}
.step-num{font-size:13px;font-weight:700;color:var(--c-muted);letter-spacing:.1em}
.step-card h3{font-size:19px;margin:14px 0 10px}
.step-card p{font-size:15px;color:var(--c-text);line-height:1.8}
.step-meter{margin-top:18px;height:4px;border-radius:999px;background:var(--c-bg-alt);overflow:hidden}
.step-meter span{display:block;height:100%;border-radius:999px;background:var(--c-primary)}
.step-card:nth-child(2) .step-meter span{background:var(--c-accent)}
.step-card:nth-child(3) .step-meter span{background:var(--c-primary)}
.step-card:nth-child(4) .step-meter span{background:var(--c-star)}

/* ---------- 课程模块 ---------- */
.module-grid{display:grid;grid-template-columns:repeat(12,1fr);gap:24px}
.module-feature{
  grid-column:span 5;display:flex;flex-direction:column;overflow:hidden;background:#fff;
  border:1px solid var(--c-line);border-radius:var(--r-lg);box-shadow:var(--sh-1);
  transition:transform .18s ease, box-shadow .18s ease, border-color .18s ease;
}
.module-feature:hover{transform:translateY(-2px);border-color:rgba(31,78,140,.28);box-shadow:var(--sh-2)}
.module-feature img{width:100%;aspect-ratio:16/10;object-fit:cover;border-radius:0}
.module-feature .mf-body{padding:24px;display:flex;flex-direction:column;gap:12px;flex:1}
.module-feature h3{font-size:20px}
.module-feature p{font-size:15px;color:var(--c-text)}
.module-feature .text-link{margin-top:auto}
.module-list{grid-column:span 7;display:grid;grid-template-columns:1fr 1fr;gap:24px}
.module-card{
  background:#fff;border:1px solid var(--c-line);border-radius:var(--r-lg);padding:24px;
  box-shadow:var(--sh-1);transition:transform .18s ease, box-shadow .18s ease, border-color .18s ease;
}
.module-card:hover{transform:translateY(-2px);border-color:rgba(31,78,140,.28);box-shadow:var(--sh-2)}
.module-card .tag{
  display:inline-block;font-size:12px;font-weight:600;color:var(--c-accent);
  background:rgba(47,166,154,.1);padding:4px 10px;border-radius:999px;margin-bottom:14px;
}
.module-card h3{font-size:18px;margin-bottom:10px}
.module-card p{font-size:15px;color:var(--c-text);line-height:1.8}

/* ---------- 图文实操 ---------- */
.split{display:grid;grid-template-columns:repeat(12,1fr);gap:24px;align-items:center}
.split-media{grid-column:span 5}
.split-media img{width:100%;aspect-ratio:4/3;object-fit:cover;border-radius:var(--r-xl);box-shadow:var(--sh-1)}
.split-body{grid-column:span 7;padding-left:24px}
.split-body h2{font-size:28px;margin-bottom:16px}
.split-body > p{font-size:16px;color:var(--c-text);margin-bottom:22px}
.check-list{margin-bottom:26px}
.check-list li{position:relative;padding-left:28px;margin-bottom:13px;font-size:15.5px;color:var(--c-text)}
.check-list li::before{
  content:"";position:absolute;left:2px;top:9px;width:14px;height:8px;
  border-left:2px solid var(--c-accent);border-bottom:2px solid var(--c-accent);
  transform:rotate(-45deg);border-radius:1px;
}
.note-strip{
  display:flex;gap:12px;align-items:flex-start;background:var(--c-bg-alt);
  border:1px solid var(--c-line);border-radius:var(--r-lg);padding:16px 18px;font-size:14.5px;color:var(--c-muted);
}
.note-strip i{color:var(--c-primary);margin-top:5px;font-size:14px}

/* ---------- 耗时对比 ---------- */
.bar-group{
  display:grid;grid-template-columns:200px 1fr;gap:32px;align-items:center;
  padding:24px 0;border-top:1px solid var(--c-line);
}
.bar-group:last-child{border-bottom:1px solid var(--c-line)}
.bar-name{font-size:16px;font-weight:600;color:var(--c-ink)}
.bar-name small{display:block;font-size:13px;font-weight:400;color:var(--c-muted);margin-top:4px}
.bar-set{display:flex;flex-direction:column;gap:12px}
.bar-item{display:grid;grid-template-columns:110px 1fr 74px;gap:16px;align-items:center}
.bar-cap{font-size:13px;color:var(--c-muted)}
.bar-track{height:10px;border-radius:999px;background:#EDF1F7;overflow:hidden}
.bar-fill{height:100%;border-radius:999px;transition:width .5s ease}
.bar-fill.base{background:#D8DEE9}
.bar-fill.ours{background:var(--c-primary)}
.bar-val{font-size:13px;color:var(--c-muted);text-align:right;font-variant-numeric:tabular-nums}

/* ---------- FAQ ---------- */
.faq-layout{display:grid;grid-template-columns:repeat(12,1fr);gap:24px}
.faq-intro{grid-column:span 4}
.faq-intro h2{font-size:28px;margin-bottom:14px}
.faq-intro p{font-size:15px;color:var(--c-muted);margin-bottom:22px}
.faq-intro .btn{width:100%;max-width:220px}
.faq-list{grid-column:span 8}
.faq-item{
  background:#fff;border:1px solid var(--c-line);border-radius:12px;
  margin-bottom:12px;overflow:hidden;transition:border-color .18s ease, background .18s ease;
}
.faq-item summary{
  list-style:none;cursor:pointer;display:flex;align-items:center;justify-content:space-between;
  gap:18px;padding:18px 20px;min-height:64px;font-size:16px;font-weight:600;color:var(--c-ink);
}
.faq-item summary::-webkit-details-marker{display:none}
.faq-item summary::after{
  content:"";width:9px;height:9px;flex:none;margin-top:-5px;
  border-right:2px solid var(--c-muted);border-bottom:2px solid var(--c-muted);
  transform:rotate(45deg);transition:transform .18s ease, border-color .18s ease;
}
.faq-item:hover{border-color:rgba(31,78,140,.28)}
.faq-item[open]{border-left:3px solid var(--c-primary);background:#F8FAFE}
.faq-item[open] summary::after{transform:rotate(-135deg);border-color:var(--c-primary);margin-top:5px}
.faq-item p{padding:0 20px 20px;font-size:15px;line-height:1.85;color:var(--c-text)}

/* ---------- CTA ---------- */
.cta-band{
  background:var(--c-primary);border-radius:20px;padding:48px;
  display:grid;grid-template-columns:1.25fr .75fr;gap:36px;align-items:center;
  position:relative;overflow:hidden;
}
.cta-band::after{
  content:"";position:absolute;inset:0;pointer-events:none;opacity:.08;
  background-image:radial-gradient(#fff 1.2px, transparent 1.4px);background-size:78px 78px;
}
.cta-band > *{position:relative;z-index:1}
.cta-band h2{color:#fff;font-size:28px;margin-bottom:14px}
.cta-band p{color:rgba(255,255,255,.85);font-size:15.5px;line-height:1.85;max-width:620px}
.cta-actions{display:flex;flex-direction:column;gap:12px}

/* ---------- 页脚 ---------- */
.site-footer{background:#14264A;color:#C9D4E8;padding:64px 0 28px;margin-top:80px}
.footer-top{display:grid;grid-template-columns:2.1fr 1fr 1fr 1.5fr;gap:36px}
.site-footer .brand{color:#fff}
.footer-brand p{margin-top:16px;font-size:14px;line-height:1.85;color:#A9B8D6;max-width:400px}
.footer-brand .mail{margin-top:12px;color:#C9D4E8;font-size:14px}
.footer-col h4{color:#fff;font-size:15px;font-weight:600;margin-bottom:18px}
.footer-col a{display:block;font-size:14px;color:#C9D4E8;margin-bottom:11px;transition:color .18s ease, transform .18s ease}
.footer-col a:hover{color:#fff;transform:translateX(2px)}
.footer-sub input{
  width:100%;height:42px;border-radius:var(--r-md);border:1px solid rgba(255,255,255,.18);
  background:rgba(255,255,255,.06);padding:0 14px;color:#fff;font-size:14px;outline:none;margin-bottom:10px;
  transition:border-color .18s ease, background .18s ease;
}
.footer-sub input::placeholder{color:#8FA0C2}
.footer-sub input:focus{border-color:rgba(255,255,255,.5);background:rgba(255,255,255,.12)}
.footer-sub .btn{
  width:100%;background:rgba(255,255,255,.1);border:1px solid rgba(255,255,255,.28);color:#fff;
}
.footer-sub .btn:hover{background:#fff;color:var(--c-primary);border-color:#fff}
.footer-bottom{
  margin-top:44px;padding-top:22px;border-top:1px solid rgba(255,255,255,.12);
  display:flex;justify-content:space-between;flex-wrap:wrap;gap:12px;font-size:13px;color:#93A3C4;
}

/* ---------- 响应式 ---------- */
@media (min-width:1024px){
  .search-box{display:block}
}
@media (max-width:1024px){
  .section{padding:64px 0}
  .page-hero h1{font-size:34px}
  .step-grid{grid-template-columns:repeat(2,1fr)}
  .module-feature{grid-column:span 12}
  .module-list{grid-column:span 12}
  .split-media{grid-column:span 12}
  .split-body{grid-column:span 12;padding-left:0}
  .faq-intro{grid-column:span 12}
  .faq-list{grid-column:span 12}
  .faq-intro .btn{max-width:none}
  .cta-band{grid-template-columns:1fr;padding:40px 32px}
  .cta-actions{flex-direction:row;flex-wrap:wrap}
  .cta-actions .btn{flex:1;min-width:200px}
  .footer-top{grid-template-columns:1fr 1fr;gap:32px}
  .bar-group{grid-template-columns:1fr;gap:14px}
}
@media (max-width:768px){
  body{font-size:16px}
  .container-page{padding:0 16px}
  .topbar-inner{height:60px;gap:12px}
  .brand{font-size:18px}
  .search-box{display:none}
  .menu-toggle{display:inline-flex}
  .top-actions .btn{display:none}
  .page-hero{padding:40px 0 36px}
  .page-hero h1{font-size:28px;margin:14px 0 12px}
  .page-hero .hero-sub{font-size:15.5px}
  .section{padding:48px 0}
  h2.section-title{font-size:23px}
  .split-body h2{font-size:23px}
  .section-head{flex-direction:column;align-items:flex-start;margin-bottom:28px}
  .step-grid{grid-template-columns:1fr;gap:16px}
  .module-list{grid-template-columns:1fr;gap:16px}
  .bar-item{grid-template-columns:88px 1fr 60px;gap:10px}
  .cta-band h2{font-size:22px}
  .footer-top{grid-template-columns:1fr;gap:28px}
  .footer-bottom{flex-direction:column;gap:8px}
  .site-footer{padding-top:48px;margin-top:56px}
}
@media (max-width:520px){
  .anchor-row{gap:8px}
  .anchor-link{height:32px;font-size:13px;padding:0 12px}
  .btn{height:46px;width:100%}
  .cta-actions{flex-direction:column}
  .cta-actions .btn{width:100%}
  .drawer-links{grid-template-columns:1fr}
}