/* roulang page: index */
:root{
  --brand-700:#14556E;
  --brand-600:#1C6E8C;
  --brand-500:#2A88A6;
  --brand-100:#D8E9EF;
  --brand-050:#EEF5F8;
  --accent-600:#C2762C;
  --accent-500:#D98A3D;
  --accent-050:#FBF1E5;
  --ink-900:#0E2233;
  --ink-700:#2C4257;
  --ink-500:#5A6E7E;
  --ink-300:#93A3AF;
  --bg:#F6F8F9;
  --surface:#FFFFFF;
  --line:#E2E9ED;
  --danger:#C0392B;
  --shadow-sm:0 1px 2px rgba(14,34,51,.05),0 1px 3px rgba(14,34,51,.04);
  --shadow-card:0 2px 6px rgba(14,34,51,.06),0 8px 24px rgba(14,34,51,.06);
  --shadow-hover:0 6px 16px rgba(14,34,51,.10),0 16px 40px rgba(14,34,51,.08);
  --radius-card:14px;
  --radius-img:12px;
  --radius-btn:10px;
  --dur:200ms;
  --ease:cubic-bezier(.4,0,.2,1);
}
*,*::before,*::after{box-sizing:border-box}
html{-webkit-text-size-adjust:100%;scroll-behavior:smooth;scroll-padding-top:96px}
body{
  margin:0;
  font-family:"PingFang SC","Microsoft YaHei","Source Han Sans SC",system-ui,-apple-system,sans-serif;
  font-size:16px;
  line-height:1.75;
  color:var(--ink-700);
  background:var(--bg);
  -webkit-font-smoothing:antialiased;
}
img{max-width:100%;display:block;border:0}
a{color:inherit;text-decoration:none}
button{font:inherit;color:inherit;background:none;border:0;cursor:pointer}
input,select,textarea{font:inherit;color:inherit}
h1,h2,h3,h4{margin:0;color:var(--ink-900);font-weight:600;letter-spacing:0}
p{margin:0}
ul,ol{margin:0;padding:0;list-style:none}
a:focus-visible,button:focus-visible,input:focus-visible{outline:3px solid rgba(28,110,140,.28);outline-offset:2px;border-radius:6px}
.container{width:100%;max-width:1200px;margin:0 auto;padding:0 32px}
.section{margin-top:96px}
.section-head{display:flex;align-items:flex-end;justify-content:space-between;gap:24px;margin-bottom:28px;flex-wrap:wrap}
.section-title{display:flex;align-items:center;gap:10px;font-size:28px;line-height:1.35;font-weight:600;color:var(--ink-900);margin:0}
.section-title::before{content:"";width:4px;height:16px;border-radius:2px;background:var(--brand-600);flex:0 0 auto}
.section-desc{margin-top:10px;font-size:14px;color:var(--ink-500);max-width:620px}
.section-more{font-size:14px;color:var(--ink-500);display:inline-flex;align-items:center;gap:5px;transition:color var(--dur) var(--ease),gap var(--dur) var(--ease)}
.section-more:hover{color:var(--brand-600);gap:9px}
.section-more svg{width:14px;height:14px}

/* ---------- buttons ---------- */
.btn{display:inline-flex;align-items:center;justify-content:center;gap:8px;height:44px;padding:0 22px;border-radius:var(--radius-btn);font-size:15px;font-weight:500;line-height:1;transition:background var(--dur) var(--ease),color var(--dur) var(--ease),border-color var(--dur) var(--ease),box-shadow var(--dur) var(--ease),transform var(--dur) var(--ease);white-space:nowrap}
.btn svg{width:17px;height:17px;flex:0 0 auto}
.btn-primary{background:var(--brand-600);color:#fff;box-shadow:var(--shadow-sm)}
.btn-primary:hover{background:var(--brand-700);color:#fff;transform:translateY(-1px);box-shadow:var(--shadow-card)}
.btn-primary:active{transform:translateY(0)}
.btn-ghost{background:#fff;color:var(--ink-900);border:1px solid var(--line)}
.btn-ghost:hover{border-color:var(--brand-600);color:var(--brand-600);box-shadow:var(--shadow-sm)}
.btn-lg{height:48px;padding:0 24px}
.btn-sm{height:38px;padding:0 16px;font-size:14px;border-radius:9px}
.pill{display:inline-flex;align-items:center;gap:6px;font-size:12px;line-height:1;padding:7px 12px;border-radius:999px;background:var(--brand-050);color:var(--brand-600);white-space:nowrap}
.pill-accent{background:var(--accent-050);color:var(--accent-600)}

/* ---------- header ---------- */
.site-header{position:sticky;top:0;z-index:60;background:#fff;border-bottom:1px solid var(--line);transition:box-shadow var(--dur) var(--ease)}
.site-header.is-scrolled{box-shadow:var(--shadow-sm)}
.nav-main{height:64px;display:flex;align-items:center;gap:22px}
.brand{display:inline-flex;align-items:center;height:34px;font-size:19px;font-weight:600;letter-spacing:0;color:var(--ink-900);white-space:nowrap;transition:color var(--dur) var(--ease)}
.brand:hover{color:var(--brand-600)}
.nav-links{display:flex;align-items:center;gap:4px}
.nav-links a{position:relative;font-size:14px;color:var(--ink-700);padding:7px 11px;border-radius:8px;transition:color var(--dur) var(--ease),background var(--dur) var(--ease)}
.nav-links a:hover{color:var(--brand-600);background:rgba(28,110,140,.05)}
.nav-links a.is-active{color:var(--brand-600)}
.nav-links a.is-active::after{content:"";position:absolute;left:11px;right:11px;bottom:1px;height:2px;border-radius:2px;background:var(--brand-600)}
.nav-actions{margin-left:auto;display:flex;align-items:center;gap:12px}
.nav-search{position:relative;width:240px}
.nav-search svg{position:absolute;left:12px;top:50%;transform:translateY(-50%);width:16px;height:16px;color:var(--ink-300);pointer-events:none}
.nav-search input{width:100%;height:40px;border:1px solid var(--line);border-radius:10px;padding:0 14px 0 38px;background:var(--brand-050);color:var(--ink-900);font-size:14px;outline:none;transition:border-color var(--dur) var(--ease),box-shadow var(--dur) var(--ease),background var(--dur) var(--ease)}
.nav-search input::placeholder{color:var(--ink-300)}
.nav-search input:focus{border-color:var(--brand-600);background:#fff;box-shadow:0 0 0 3px rgba(28,110,140,.14)}
.nav-search-toggle,.nav-burger{display:none;align-items:center;justify-content:center;width:40px;height:40px;border-radius:10px;border:1px solid var(--line);color:var(--ink-700);transition:all var(--dur) var(--ease)}
.nav-search-toggle:hover,.nav-burger:hover{border-color:var(--brand-600);color:var(--brand-600)}
.nav-search-toggle svg,.nav-burger svg{width:18px;height:18px}

/* mobile drawer */
.mobile-panel{display:none;border-top:1px solid var(--line);background:#fff;padding:8px 0 16px}
.mobile-panel.is-open{display:block}
.mobile-panel .container{display:block}
.mobile-link{display:flex;align-items:center;justify-content:space-between;height:48px;font-size:15px;color:var(--ink-700);border-bottom:1px solid var(--line);transition:color var(--dur) var(--ease)}
.mobile-link:hover{color:var(--brand-600)}
.mobile-link svg{width:16px;height:16px;color:var(--ink-300)}
.mobile-search{display:flex;gap:10px;margin-top:16px}
.mobile-search input{flex:1;height:44px;border:1px solid var(--line);border-radius:10px;padding:0 14px;background:#fff;outline:none;font-size:14px}
.mobile-search input:focus{border-color:var(--brand-600);box-shadow:0 0 0 3px rgba(28,110,140,.14)}

/* ---------- channel bar ---------- */
.channel-wrap{position:relative;border-top:1px solid var(--line)}
.channel-wrap::after{content:"";position:absolute;right:0;top:1px;bottom:0;width:24px;background:linear-gradient(to right,rgba(255,255,255,0),#fff);pointer-events:none}
.channel-bar{height:52px;display:flex;align-items:center;gap:6px;overflow-x:auto;scroll-snap-type:x proximity;scrollbar-width:none;-ms-overflow-style:none}
.channel-bar::-webkit-scrollbar{display:none}
.channel{position:relative;flex:0 0 auto;scroll-snap-align:start;font-size:14px;font-weight:500;color:var(--ink-700);padding:8px 15px;border-radius:999px;transition:background var(--dur) var(--ease),color var(--dur) var(--ease)}
.channel:hover{background:rgba(28,110,140,.06);color:var(--brand-600)}
.channel.is-active{background:var(--brand-050);color:var(--brand-600)}
.channel.is-active::after{content:"";position:absolute;left:15px;right:15px;bottom:3px;height:2px;border-radius:2px;background:var(--brand-600)}

/* ---------- hero ---------- */
.hero{padding-top:56px}
.hero-grid{display:grid;grid-template-columns:minmax(0,1fr) minmax(0,1.05fr);gap:48px;align-items:center;min-height:480px}
.hero-copy{max-width:560px}
.hero h1{font-size:clamp(32px,4vw,44px);line-height:1.25;font-weight:600;color:var(--ink-900)}
.hero-sub{margin-top:18px;font-size:17px;line-height:1.8;color:var(--ink-500)}
.hero-cta{margin-top:30px;display:flex;gap:12px;flex-wrap:wrap}
.hero-pills{margin-top:26px;display:flex;gap:10px;overflow-x:auto;padding-bottom:6px;scrollbar-width:none}
.hero-pills::-webkit-scrollbar{display:none}
.hero-media{position:relative;border-radius:16px;overflow:hidden;box-shadow:var(--shadow-card);background:var(--brand-100);aspect-ratio:16/10}
.hero-media img{width:100%;height:100%;object-fit:cover}
.hero-media .hero-tag{position:absolute;left:16px;bottom:16px;background:rgba(255,255,255,.94);color:var(--brand-700);font-size:12px;padding:7px 13px;border-radius:999px;box-shadow:var(--shadow-sm)}

/* ---------- trust ---------- */
.trust{margin-top:64px;border-top:1px solid var(--line);border-bottom:1px solid var(--line);padding:26px 0}
.trust-grid{display:grid;grid-template-columns:repeat(4,1fr);gap:24px}
.trust-item .num{font-size:28px;font-weight:600;line-height:1.2;color:var(--ink-900);font-variant-numeric:tabular-nums;font-family:ui-sans-serif,system-ui,"PingFang SC",sans-serif}
.trust-item .cap{margin-top:4px;font-size:13px;color:var(--ink-500)}

/* ---------- collections ---------- */
.collection-grid{display:grid;grid-template-columns:repeat(4,1fr);gap:24px}
.collection-card{display:flex;flex-direction:column;background:#fff;border:1px solid var(--line);border-radius:var(--radius-card);padding:22px;transition:transform var(--dur) var(--ease),box-shadow var(--dur) var(--ease),border-color var(--dur) var(--ease)}
.collection-card:hover{transform:translateY(-2px);box-shadow:var(--shadow-hover);border-color:var(--brand-100)}
.collection-card .idx{width:28px;height:28px;border-radius:8px;background:var(--brand-050);color:var(--brand-600);font-size:12px;font-weight:600;display:flex;align-items:center;justify-content:center;font-family:ui-sans-serif,system-ui,sans-serif}
.collection-card h3{margin-top:14px;font-size:18px;line-height:1.5}
.collection-card p{margin-top:8px;font-size:14px;line-height:1.7;color:var(--ink-500);flex:1}
.collection-card .meta{margin-top:16px;font-size:12px;color:var(--ink-300);display:flex;align-items:center;justify-content:space-between}
.collection-card .meta svg{width:14px;height:14px;transition:transform var(--dur) var(--ease)}
.collection-card:hover .meta svg{transform:translateX(4px);color:var(--brand-600)}

/* ---------- featured ---------- */
.feature-grid{display:grid;grid-template-columns:repeat(4,1fr);gap:24px}
.feature-lead{grid-column:span 2;grid-row:span 2;display:flex;flex-direction:column;background:#fff;border:1px solid var(--line);border-radius:var(--radius-card);overflow:hidden;transition:transform var(--dur) var(--ease),box-shadow var(--dur) var(--ease),border-color var(--dur) var(--ease)}
.feature-lead:hover{transform:translateY(-2px);box-shadow:var(--shadow-hover);border-color:var(--brand-100)}
.feature-lead .media{position:relative;aspect-ratio:16/9;overflow:hidden;background:var(--brand-100)}
.feature-lead .media img{width:100%;height:100%;object-fit:cover;transition:transform 320ms var(--ease)}
.feature-lead:hover .media img{transform:scale(1.03)}
.feature-lead .badge{position:absolute;left:14px;bottom:14px}
.feature-lead .body{padding:22px;display:flex;flex-direction:column;gap:10px;flex:1}
.feature-lead h3{font-size:22px;line-height:1.45}
.feature-lead p{font-size:14px;line-height:1.75;color:var(--ink-500)}
.feature-lead .meta{margin-top:auto;font-size:12px;color:var(--ink-300)}
.mini-card{display:flex;flex-direction:column;justify-content:space-between;gap:14px;background:#fff;border:1px solid var(--line);border-radius:var(--radius-card);padding:18px;transition:transform var(--dur) var(--ease),box-shadow var(--dur) var(--ease),border-color var(--dur) var(--ease)}
.mini-card:hover{transform:translateY(-2px);box-shadow:var(--shadow-hover);border-color:var(--brand-100)}
.mini-card h3{font-size:16px;line-height:1.55;display:-webkit-box;-webkit-line-clamp:2;-webkit-box-orient:vertical;overflow:hidden;transition:color var(--dur) var(--ease)}
.mini-card:hover h3{color:var(--brand-600)}
.mini-card .meta{font-size:12px;color:var(--ink-300);display:flex;align-items:center;gap:8px}

/* ---------- latest / cms ---------- */
.news-layout{display:grid;grid-template-columns:2fr 1fr;gap:32px;align-items:start}
.news-list{display:flex;flex-direction:column;gap:20px}
.news-item{display:grid;grid-template-columns:200px minmax(0,1fr);gap:20px;background:#fff;border:1px solid var(--line);border-radius:var(--radius-card);padding:16px;transition:transform var(--dur) var(--ease),box-shadow var(--dur) var(--ease),border-color var(--dur) var(--ease)}
.news-item:hover{transform:translateY(-2px);box-shadow:var(--shadow-hover);border-color:var(--brand-100)}
.news-thumb{border-radius:var(--radius-img);overflow:hidden;aspect-ratio:3/2;background:var(--brand-100)}
.news-thumb img{width:100%;height:100%;object-fit:cover;transition:transform 320ms var(--ease)}
.news-item:hover .news-thumb img{transform:scale(1.03)}
.news-body{display:flex;flex-direction:column;min-width:0}
.news-body h3{font-size:17px;line-height:1.55;display:-webkit-box;-webkit-line-clamp:2;-webkit-box-orient:vertical;overflow:hidden;transition:color var(--dur) var(--ease)}
.news-item:hover .news-body h3{color:var(--brand-600)}
.news-body p{margin-top:8px;font-size:14px;line-height:1.7;color:var(--ink-500);display:-webkit-box;-webkit-line-clamp:2;-webkit-box-orient:vertical;overflow:hidden}
.news-meta{margin-top:auto;padding-top:12px;display:flex;align-items:center;gap:12px;font-size:12px;color:var(--ink-300);flex-wrap:wrap}
.news-meta .dot{width:3px;height:3px;border-radius:50%;background:var(--ink-300);display:inline-block}

/* sidebar */
.side-card{background:#fff;border:1px solid var(--line);border-radius:var(--radius-card);padding:20px}
.side-card + .side-card{margin-top:20px}
.side-title{font-size:16px;font-weight:600;color:var(--ink-900);margin:0 0 8px}
.side-link{display:flex;align-items:center;justify-content:space-between;gap:12px;padding:11px 0;border-bottom:1px dashed var(--line);font-size:14px;color:var(--ink-700);transition:color var(--dur) var(--ease)}
.side-link:last-child{border-bottom:0}
.side-link:hover{color:var(--brand-600)}
.side-link svg{width:14px;height:14px;color:var(--ink-300);flex:0 0 auto}
.rank-item{display:flex;gap:12px;padding:10px 0;border-bottom:1px dashed var(--line)}
.rank-item:last-child{border-bottom:0}
.rank-no{flex:0 0 auto;width:22px;height:22px;border-radius:6px;background:var(--accent-050);color:var(--accent-600);font-size:12px;font-weight:600;display:flex;align-items:center;justify-content:center;font-family:ui-sans-serif,system-ui,sans-serif}
.rank-item p{font-size:14px;line-height:1.6;color:var(--ink-700);transition:color var(--dur) var(--ease)}
.rank-item:hover p{color:var(--brand-600)}

/* empty state */
.empty{background:#fff;border:1px dashed var(--line);border-radius:var(--radius-card);padding:44px 24px;text-align:center}
.empty svg{width:40px;height:40px;color:var(--ink-300);margin:0 auto 14px}
.empty p{font-size:14px;color:var(--ink-500)}
.empty .btn{margin-top:18px}

/* ---------- recommend rail ---------- */
.rec-rail{display:grid;grid-auto-flow:column;grid-auto-columns:calc((100% - 48px)/3.5);gap:16px;overflow-x:auto;scroll-snap-type:x mandatory;padding-bottom:10px;scrollbar-width:none;-ms-overflow-style:none}
.rec-rail::-webkit-scrollbar{display:none}
.rec-card{scroll-snap-align:start;background:#fff;border:1px solid var(--line);border-radius:var(--radius-card);padding:18px;display:flex;flex-direction:column;gap:12px;transition:transform var(--dur) var(--ease),box-shadow var(--dur) var(--ease),border-color var(--dur) var(--ease)}
.rec-card:hover{transform:translateY(-2px);box-shadow:var(--shadow-hover);border-color:var(--brand-100)}
.rec-card h3{font-size:16px;line-height:1.55;display:-webkit-box;-webkit-line-clamp:2;-webkit-box-orient:vertical;overflow:hidden}
.rec-card .meta{font-size:12px;color:var(--ink-300);margin-top:auto}

/* ---------- cta band ---------- */
.cta-band{background:var(--brand-050);border-radius:18px;padding:40px;display:flex;align-items:center;justify-content:space-between;gap:32px}
.cta-band h2{font-size:24px;line-height:1.4;color:var(--ink-900)}
.cta-band p{margin-top:10px;font-size:14px;color:var(--ink-500);max-width:520px}
.cta-actions{display:flex;gap:12px;flex-wrap:wrap;flex:0 0 auto}

/* ---------- footer ---------- */
.site-footer{margin-top:96px;background:var(--ink-900);color:#C9D6DE;font-size:14px}
.footer-grid{display:grid;grid-template-columns:1.5fr 1fr 1fr 1.3fr;gap:40px;padding:56px 0 40px}
.footer-col h4{margin:0 0 16px;font-size:14px;font-weight:600;color:#fff;display:flex;align-items:center;justify-content:space-between}
.footer-col ul li{margin-bottom:10px}
.footer-col a{color:#C9D6DE;transition:color var(--dur) var(--ease)}
.footer-col a:hover{color:#fff;text-decoration:underline}
.footer-brand .fb-logo{font-size:18px;font-weight:600;color:#fff;letter-spacing:0}
.footer-brand p{margin-top:12px;font-size:12px;line-height:1.8;color:#9FB2BE;max-width:280px}
.footer-toggle{display:none;width:16px;height:16px;color:#8FA3B0;transition:transform var(--dur) var(--ease)}
.footer-col.is-open .footer-toggle{transform:rotate(180deg)}
.to-top{display:inline-flex;align-items:center;justify-content:center;width:40px;height:40px;border-radius:10px;border:1px solid var(--brand-500);color:#fff;background:transparent;margin-top:18px;transition:background var(--dur) var(--ease),border-color var(--dur) var(--ease),transform var(--dur) var(--ease)}
.to-top:hover{background:var(--brand-600);border-color:var(--brand-600);transform:translateY(-2px)}
.to-top svg{width:16px;height:16px}
.footer-bottom{border-top:1px solid rgba(255,255,255,.12);padding:20px 0 28px;display:flex;align-items:center;justify-content:space-between;gap:16px;flex-wrap:wrap;font-size:13px;color:#8FA3B0}
.footer-bottom a{color:#8FA3B0}
.footer-bottom a:hover{color:#fff}

/* ---------- fade up ---------- */
.fade-up{animation:fadeUp 620ms cubic-bezier(.4,0,.2,1) both}
@keyframes fadeUp{from{opacity:0;transform:translateY(14px)}to{opacity:1;transform:none}}

/* ---------- responsive ---------- */
@media (max-width:1199px){
  .rec-rail{grid-auto-columns:calc((100% - 32px)/2.5)}
}
@media (max-width:1023px){
  .container{padding:0 24px}
  .section{margin-top:72px}
  .nav-links,.nav-search{display:none}
  .nav-search-toggle,.nav-burger{display:inline-flex}
  .hero{padding-top:36px}
  .hero-grid{grid-template-columns:1fr;gap:32px;min-height:0}
  .hero-copy{max-width:none}
  .hero-media{aspect-ratio:16/9;max-height:320px}
  .hero-media img{max-height:320px}
  .collection-grid{grid-template-columns:repeat(2,1fr)}
  .feature-grid{grid-template-columns:repeat(2,1fr)}
  .feature-lead{grid-column:span 2;grid-row:auto}
  .news-layout{grid-template-columns:1fr}
  .footer-grid{grid-template-columns:repeat(2,1fr);gap:32px}
  .rec-rail{grid-auto-columns:calc((100% - 32px)/2.3)}
}
@media (max-width:767px){
  .section{margin-top:64px}
  .section-head{align-items:flex-start}
  .section-title{font-size:24px}
  .cta-band{flex-direction:column;align-items:stretch;padding:28px 22px}
  .cta-actions{flex-direction:column}
  .cta-actions .btn{width:100%}
}
@media (max-width:639px){
  .container{padding:0 16px}
  .section{margin-top:56px}
  .trust{margin-top:48px}
  .trust-grid{grid-template-columns:repeat(2,1fr);gap:20px}
  .collection-grid{grid-template-columns:1fr}
  .feature-grid{grid-template-columns:1fr}
  .feature-lead{grid-column:span 1}
  .news-item{grid-template-columns:1fr}
  .news-thumb{aspect-ratio:16/9}
  .hero-cta{flex-direction:column}
  .hero-cta .btn{width:100%}
  .hero-media{max-height:240px;aspect-ratio:auto;height:240px}
  .hero-media img{height:240px}
  .rec-rail{grid-auto-columns:82%}
  .footer-grid{grid-template-columns:1fr;gap:0;padding:8px 0 24px}
  .footer-col{border-bottom:1px solid rgba(255,255,255,.12)}
  .footer-col h4{margin:0;height:50px;cursor:pointer}
  .footer-toggle{display:inline-flex}
  .footer-col ul{display:none;padding-bottom:16px}
  .footer-col.is-open ul{display:block}
  .footer-brand{padding:20px 0}
  .footer-brand p{max-width:none}
  .footer-bottom{padding:18px 0 24px}
}
@media (max-width:420px){
  .brand{font-size:17px}
  .btn{font-size:14px;padding:0 18px}
}
@media (prefers-reduced-motion:reduce){
  *,*::before,*::after{animation-duration:.001ms !important;animation-iteration-count:1 !important;transition-duration:.001ms !important;scroll-behavior:auto !important}
  .collection-card:hover,.mini-card:hover,.news-item:hover,.rec-card:hover,.feature-lead:hover{transform:none}
}

/* roulang page: category1 */
:root{
  --brand-700:#14556E;--brand-600:#1C6E8C;--brand-500:#2A88A6;--brand-100:#D8E9EF;--brand-050:#EEF5F8;
  --accent-600:#C2762C;--accent-500:#D98A3D;--accent-050:#FBF1E5;
  --ink-900:#0E2233;--ink-700:#2C4257;--ink-500:#5A6E7E;--ink-300:#93A3AF;
  --bg:#F6F8F9;--surface:#FFFFFF;--line:#E2E9ED;--danger:#C0392B;
  --r-card:14px;--r-img:12px;--r-btn:10px;--r-pill:999px;
  --shadow-sm:0 1px 2px rgba(14,34,51,.05),0 1px 3px rgba(14,34,51,.04);
  --shadow-card:0 2px 6px rgba(14,34,51,.06),0 8px 24px rgba(14,34,51,.06);
  --shadow-hover:0 6px 16px rgba(14,34,51,.10),0 16px 40px rgba(14,34,51,.08);
  --ease:200ms cubic-bezier(.4,0,.2,1);
}
*,*::before,*::after{box-sizing:border-box}
html{scroll-padding-top:132px;scroll-behavior:smooth;-webkit-text-size-adjust:100%}
body.site{
  margin:0;padding:0;background:var(--bg);color:var(--ink-700);
  font-family:"PingFang SC","Microsoft YaHei","Source Han Sans SC",system-ui,-apple-system,"Segoe UI",Arial,sans-serif;
  font-size:16px;line-height:1.75;font-weight:400;letter-spacing:0;
  -webkit-font-smoothing:antialiased;text-rendering:optimizeLegibility;
}
body.site a{color:inherit;text-decoration:none}
body.site img{display:block;max-width:100%;height:auto}
body.site button{font:inherit;color:inherit;background:none;border:0;cursor:pointer}
body.site input{font:inherit}
body.site h1,body.site h2,body.site h3,body.site h4{margin:0;color:var(--ink-900);font-weight:600;letter-spacing:0;line-height:1.35}
body.site ul,body.site ol{margin:0;padding:0;list-style:none}
body.site p{margin:0}
body.site :focus-visible{outline:3px solid rgba(28,110,140,.28);outline-offset:2px;border-radius:6px}

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

/* ---------- Header ---------- */
.site-header{position:sticky;top:0;z-index:60;background:var(--surface);border-bottom:1px solid var(--line);transition:box-shadow var(--ease)}
.site-header.is-scrolled{box-shadow:var(--shadow-sm)}
.header-inner{display:flex;align-items:center;gap:20px;height:64px;position:relative}
.logo{display:inline-flex;align-items:center;height:36px;font-size:19px;font-weight:600;color:var(--ink-900);white-space:nowrap;letter-spacing:0}
.logo-dot{width:8px;height:8px;border-radius:3px;background:var(--brand-600);margin-right:9px;flex:0 0 8px}
.nav-links{display:flex;align-items:center;gap:4px;margin-left:8px}
.nav-links a{position:relative;padding:8px 14px;font-size:14px;font-weight:500;color:var(--ink-700);border-radius:8px;transition:color var(--ease),background var(--ease)}
.nav-links a:hover{color:var(--brand-600);background:var(--brand-050)}
.nav-links a.is-active{color:var(--brand-600)}
.nav-links a.is-active::after{content:"";position:absolute;left:14px;right:14px;bottom:1px;height:2px;border-radius:2px;background:var(--brand-600)}
.header-actions{margin-left:auto;display:flex;align-items:center;gap:10px}
.search-form{position:relative;display:flex;align-items:center;width:240px;background:var(--bg);border:1px solid var(--line);border-radius:var(--r-btn);height:44px;padding:0 12px;transition:border-color var(--ease),box-shadow var(--ease),background var(--ease)}
.search-form:focus-within{border-color:var(--brand-600);background:var(--surface);box-shadow:0 0 0 3px rgba(28,110,140,.14)}
.search-form svg{width:17px;height:17px;color:var(--ink-300);flex:0 0 17px}
.search-form input{flex:1;min-width:0;border:0;background:transparent;height:100%;padding:0 8px;font-size:14px;color:var(--ink-700);outline:none}
.search-form input::placeholder{color:var(--ink-300)}
.icon-btn{display:inline-flex;align-items:center;justify-content:center;width:40px;height:40px;border-radius:var(--r-btn);border:1px solid var(--line);color:var(--ink-700);background:var(--surface);transition:color var(--ease),border-color var(--ease),background var(--ease)}
.icon-btn:hover{color:var(--brand-600);border-color:var(--brand-100);background:var(--brand-050)}
.icon-btn svg{width:18px;height:18px}
.search-toggle{display:none}
.menu-toggle{display:none;width:40px;height:40px;align-items:center;justify-content:center;border-radius:var(--r-btn);border:1px solid var(--line)}
.menu-toggle svg{width:20px;height:20px;color:var(--ink-900)}
.btn{display:inline-flex;align-items:center;justify-content:center;gap:8px;height:48px;padding:0 24px;border-radius:var(--r-btn);font-size:15px;font-weight:500;border:1px solid transparent;transition:background var(--ease),color var(--ease),border-color var(--ease),transform var(--ease),box-shadow var(--ease);white-space:nowrap}
.btn svg{width:17px;height:17px}
.btn-primary{background:var(--brand-600);color:#fff}
.btn-primary:hover{background:var(--brand-700);transform:translateY(-1px);box-shadow:var(--shadow-sm)}
.btn-primary:active{transform:translateY(0)}
.btn-ghost{background:var(--surface);color:var(--ink-900);border-color:var(--line)}
.btn-ghost:hover{border-color:var(--brand-100);background:var(--brand-050);color:var(--brand-700)}
.btn-sm{height:40px;padding:0 16px;font-size:14px}
.header-cta{height:40px;padding:0 18px;font-size:14px}

/* ---------- Channel tabs ---------- */
.channel-bar{position:relative;border-top:1px solid var(--line);background:var(--surface)}
.channel-inner{display:flex;align-items:center;gap:8px;height:52px;overflow-x:auto;scroll-snap-type:x proximity;-ms-overflow-style:none;scrollbar-width:none}
.channel-inner::-webkit-scrollbar{display:none}
.channel-tab{flex:0 0 auto;scroll-snap-align:start;padding:7px 16px;border-radius:var(--r-pill);font-size:14px;font-weight:500;color:var(--ink-700);background:transparent;transition:background var(--ease),color var(--ease)}
.channel-tab:hover{background:rgba(28,110,140,.06)}
.channel-tab.is-active{background:var(--brand-050);color:var(--brand-600);box-shadow:inset 0 -2px 0 var(--brand-600)}
.channel-fade{position:absolute;right:0;top:1px;bottom:0;width:24px;background:linear-gradient(90deg,rgba(255,255,255,0),#fff);pointer-events:none}

/* ---------- Drawer ---------- */
.drawer{position:fixed;top:0;right:-320px;width:300px;max-width:86vw;height:100%;background:var(--surface);z-index:90;padding:20px;box-shadow:var(--shadow-hover);transition:right var(--ease);overflow-y:auto}
.drawer.is-open{right:0}
.drawer-head{display:flex;align-items:center;justify-content:space-between;padding-bottom:16px;border-bottom:1px solid var(--line)}
.drawer-title{font-size:15px;font-weight:600;color:var(--ink-900)}
.drawer-close{width:36px;height:36px;border-radius:10px;border:1px solid var(--line);display:inline-flex;align-items:center;justify-content:center;font-size:18px;line-height:1;color:var(--ink-700)}
.drawer-nav{display:flex;flex-direction:column;padding-top:8px}
.drawer-nav a{display:flex;align-items:center;justify-content:space-between;height:48px;font-size:15px;color:var(--ink-700);border-bottom:1px solid var(--line)}
.drawer-nav a.is-active{color:var(--brand-600);font-weight:600}
.drawer-nav a span{color:var(--ink-300)}
.drawer-foot{margin-top:20px}
.drawer-foot .btn{width:100%}
.drawer-mask{position:fixed;inset:0;background:rgba(14,34,51,.36);z-index:80;opacity:0;visibility:hidden;transition:opacity var(--ease),visibility var(--ease)}
.drawer-mask.is-open{opacity:1;visibility:visible}

/* ---------- Hero ---------- */
.cat-hero{background:var(--surface);border-bottom:1px solid var(--line)}
.cat-hero-inner{display:grid;grid-template-columns:minmax(0,1fr) 360px;gap:48px;align-items:center;min-height:248px;padding-top:34px;padding-bottom:34px}
.breadcrumb{display:flex;align-items:center;gap:8px;font-size:13px;color:var(--ink-300);margin-bottom:14px}
.breadcrumb a:hover{color:var(--brand-600)}
.breadcrumb .sep{color:var(--line)}
.breadcrumb [aria-current]{color:var(--ink-500)}
.page-title{font-size:clamp(28px,3.4vw,40px);line-height:1.25;font-weight:600;letter-spacing:0;max-width:640px}
.page-lead{margin-top:14px;font-size:16px;line-height:1.75;color:var(--ink-500);max-width:620px}
.cat-hero-media{border-radius:var(--r-img);overflow:hidden;box-shadow:var(--shadow-card);background:var(--brand-050)}
.cat-hero-media img{width:100%;aspect-ratio:16/10;object-fit:cover}
.hero-enter{animation:fadeUp .5s cubic-bezier(.4,0,.2,1) both}
@keyframes fadeUp{from{opacity:0;transform:translateY(12px)}to{opacity:1;transform:none}}

/* ---------- Sections ---------- */
.section{padding:96px 0 0}
.section--panel{background:var(--surface);border-top:1px solid var(--line);border-bottom:1px solid var(--line);padding:96px 0}
.section--last{padding-bottom:96px}
.section-head{display:flex;align-items:flex-end;justify-content:space-between;gap:20px;margin-bottom:28px;flex-wrap:wrap}
.section-title{display:flex;align-items:center;gap:12px;font-size:28px;line-height:1.35;font-weight:600}
.section-title::before{content:"";width:4px;height:16px;border-radius:2px;background:var(--brand-600);flex:0 0 4px}
.section-sub{margin-top:10px;font-size:15px;color:var(--ink-500);max-width:720px}
.link-more{display:inline-flex;align-items:center;gap:6px;font-size:14px;font-weight:500;color:var(--brand-600);transition:color var(--ease)}
.link-more svg{width:15px;height:15px;transition:transform var(--ease)}
.link-more:hover{color:var(--brand-700)}
.link-more:hover svg{transform:translateX(4px)}

/* ---------- Intro ---------- */
.intro-grid{display:grid;grid-template-columns:minmax(0,1.15fr) minmax(0,.85fr);gap:48px;align-items:start}
.intro-copy p{margin-top:18px;font-size:16px;line-height:1.85;color:var(--ink-700)}
.intro-copy p:first-of-type{margin-top:20px}
.intro-tags{display:flex;flex-wrap:wrap;gap:10px;margin-top:24px}
.tag-pill{display:inline-flex;align-items:center;gap:6px;padding:6px 14px;border-radius:var(--r-pill);background:var(--brand-050);color:var(--brand-600);font-size:13px;font-weight:500}
.tag-pill--accent{background:var(--accent-050);color:var(--accent-600)}
.intro-media{margin:0}
.intro-media img{width:100%;aspect-ratio:4/3;object-fit:cover;border-radius:var(--r-img);box-shadow:var(--shadow-card)}
.intro-media figcaption{margin-top:12px;font-size:13px;color:var(--ink-300);text-align:center}

/* ---------- Cards ---------- */
.card-grid{display:grid;grid-template-columns:repeat(2,minmax(0,1fr));gap:24px}
.card{display:flex;flex-direction:column;background:var(--surface);border:1px solid var(--line);border-radius:var(--r-card);overflow:hidden;box-shadow:var(--shadow-sm);transition:transform var(--ease),box-shadow var(--ease),border-color var(--ease)}
.card:hover{transform:translateY(-2px);box-shadow:var(--shadow-hover);border-color:var(--brand-100)}
.card-media{aspect-ratio:16/9;overflow:hidden;background:var(--brand-050)}
.card-media img{width:100%;height:100%;object-fit:cover;transition:transform var(--ease)}
.card:hover .card-media img{transform:scale(1.03)}
.card-body{display:flex;flex-direction:column;gap:12px;padding:22px 22px 24px;flex:1}
.card-title{font-size:20px;line-height:1.5;font-weight:600;color:var(--ink-900)}
.card-text{font-size:14px;line-height:1.7;color:var(--ink-500);display:-webkit-box;-webkit-line-clamp:2;-webkit-box-orient:vertical;overflow:hidden}
.card-link{margin-top:auto;display:inline-flex;align-items:center;gap:6px;font-size:14px;font-weight:500;color:var(--brand-600)}
.card-link svg{width:15px;height:15px;transition:transform var(--ease)}
.card:hover .card-link svg{transform:translateX(4px)}
.card:hover .card-link{color:var(--brand-700)}

/* ---------- Points ---------- */
.point-list{border-top:1px solid var(--line);margin-top:4px}
.point-item{display:grid;grid-template-columns:52px minmax(0,1fr);gap:20px;align-items:start;padding:24px 16px;border-bottom:1px solid var(--line);transition:background var(--ease)}
.point-item:hover{background:var(--brand-050)}
.point-num{display:flex;align-items:center;justify-content:center;width:40px;height:40px;border-radius:10px;background:var(--accent-050);color:var(--accent-600);font-size:15px;font-weight:600;font-variant-numeric:tabular-nums}
.point-body h3{font-size:17px;line-height:1.5;margin-bottom:6px}
.point-body p{font-size:14px;line-height:1.7;color:var(--ink-500)}

/* ---------- FAQ ---------- */
.faq-list{display:grid;gap:16px;max-width:880px}
.faq-item{position:relative;background:var(--surface);border:1px solid var(--line);border-radius:var(--r-card);padding:0 24px;overflow:hidden;transition:box-shadow var(--ease),border-color var(--ease)}
.faq-item[open]{box-shadow:var(--shadow-card);border-color:var(--brand-100)}
.faq-item[open]::before{content:"";position:absolute;left:0;top:0;bottom:0;width:3px;background:var(--accent-500)}
.faq-item summary{display:flex;align-items:center;justify-content:space-between;gap:16px;padding:20px 0;font-size:16px;font-weight:600;color:var(--ink-900);cursor:pointer;list-style:none}
.faq-item summary::-webkit-details-marker{display:none}
.faq-icon{position:relative;flex:0 0 18px;width:18px;height:18px}
.faq-icon::before,.faq-icon::after{content:"";position:absolute;left:50%;top:50%;background:var(--brand-600);border-radius:2px;transition:transform var(--ease),opacity var(--ease)}
.faq-icon::before{width:14px;height:2px;transform:translate(-50%,-50%)}
.faq-icon::after{width:2px;height:14px;transform:translate(-50%,-50%)}
.faq-item[open] .faq-icon::after{transform:translate(-50%,-50%) rotate(90deg);opacity:0}
.faq-answer{padding:0 0 22px;border-top:1px solid var(--line);padding-top:16px}
.faq-answer p{font-size:15px;line-height:1.8;color:var(--ink-700)}

/* ---------- CTA ---------- */
.cta-band{display:flex;align-items:center;justify-content:space-between;gap:32px;background:var(--brand-050);border:1px solid var(--brand-100);border-radius:16px;padding:40px}
.cta-copy h2{font-size:26px;line-height:1.35;margin-bottom:10px}
.cta-copy p{font-size:15px;line-height:1.75;color:var(--ink-500);max-width:560px}
.cta-actions{display:flex;flex-wrap:wrap;gap:12px;flex:0 0 auto}

/* ---------- Footer ---------- */
.site-footer{background:var(--ink-900);color:#C9D6DE;margin-top:0}
.site-footer a{color:#C9D6DE}
.site-footer a:hover{color:#fff;text-decoration:underline}
.footer-grid{display:grid;grid-template-columns:1.4fr 1fr 1fr 1.2fr;gap:40px;padding:64px 0 40px}
.footer-col h4{display:flex;align-items:center;justify-content:space-between;font-size:15px;color:#fff;margin-bottom:18px;font-weight:600}
.footer-toggle{display:none}
.footer-toggle svg{width:16px;height:16px;transition:transform var(--ease)}
.footer-col ul{display:grid;gap:10px}
.footer-col ul a{font-size:14px;line-height:1.6}
.fb-logo{font-size:19px;font-weight:600;color:#fff;margin-bottom:14px}
.footer-brand p{font-size:12px;line-height:1.8;color:#9FB3BF;max-width:320px}
.to-top{margin-top:20px;display:inline-flex;align-items:center;justify-content:center;width:40px;height:40px;border-radius:10px;border:1px solid var(--brand-500);color:#fff;background:transparent;transition:background var(--ease),transform var(--ease)}
.to-top:hover{background:rgba(42,136,166,.22);transform:translateY(-2px)}
.to-top svg{width:18px;height:18px}
.footer-bottom{display:flex;align-items:center;justify-content:space-between;gap:16px;flex-wrap:wrap;border-top:1px solid rgba(255,255,255,.12);padding:20px 0 28px;font-size:13px;color:#9FB3BF}
.footer-bottom a{font-size:13px}

/* ---------- Responsive ---------- */
@media (max-width:1023px){
  .container{padding-left:24px;padding-right:24px}
  .nav-links{display:none}
  .menu-toggle{display:inline-flex}
  .search-toggle{display:inline-flex}
  .header-cta{display:none}
  .search-form{position:absolute;left:24px;right:24px;top:72px;width:auto;height:48px;background:var(--surface);box-shadow:var(--shadow-card);display:none;z-index:70}
  .site-header.search-open .search-form{display:flex}
  .cat-hero-inner{grid-template-columns:minmax(0,1fr);gap:28px;min-height:0;padding-top:28px}
  .cat-hero-media img{aspect-ratio:16/9;max-height:240px}
  .intro-grid{grid-template-columns:minmax(0,1fr);gap:32px}
  .section{padding-top:72px}
  .section--panel{padding:72px 0}
  .section--last{padding-bottom:72px}
  .cta-band{flex-direction:column;align-items:flex-start;padding:32px}
  .footer-grid{grid-template-columns:repeat(2,minmax(0,1fr));gap:32px;padding:48px 0 32px}
}
@media (max-width:767px){
  .container{padding-left:16px;padding-right:16px}
  .logo{font-size:18px}
  .search-form{left:16px;right:16px}
  .page-title{font-size:26px}
  .section-title{font-size:22px}
  .card-grid{grid-template-columns:minmax(0,1fr)}
  .point-item{grid-template-columns:44px minmax(0,1fr);gap:14px;padding:20px 8px}
  .faq-item{padding:0 16px}
  .section{padding-top:56px}
  .section--panel{padding:56px 0}
  .section--last{padding-bottom:56px}
  .cta-band{padding:24px;border-radius:14px}
  .cta-actions{width:100%}
  .cta-actions .btn{width:100%}
  .footer-grid{grid-template-columns:minmax(0,1fr);gap:0;padding:36px 0 24px}
  .footer-col{border-bottom:1px solid rgba(255,255,255,.12)}
  .footer-col h4{padding:18px 0;margin-bottom:0}
  .footer-toggle{display:inline-flex}
  .footer-col ul{display:none;padding-bottom:16px}
  .footer-col.is-open ul{display:grid}
  .footer-col.is-open .footer-toggle svg{transform:rotate(180deg)}
  .footer-brand{border-bottom:1px solid rgba(255,255,255,.12);padding-bottom:20px}
  .footer-brand p{max-width:none}
  .footer-bottom{flex-direction:column;align-items:flex-start;gap:8px}
  .intro-media img{aspect-ratio:16/10}
  body.site h1{font-size:26px}
}
@media (prefers-reduced-motion:reduce){
  *{animation:none !important;transition:none !important;scroll-behavior:auto !important}
}

/* roulang page: article */
:root{
    --brand-700:#14556E;
    --brand-600:#1C6E8C;
    --brand-500:#2A88A6;
    --brand-100:#D8E9EF;
    --brand-050:#EEF5F8;
    --accent-600:#C2762C;
    --accent-500:#D98A3D;
    --accent-050:#FBF1E5;
    --ink-900:#0E2233;
    --ink-700:#2C4257;
    --ink-500:#5A6E7E;
    --ink-300:#93A3AF;
    --bg:#F6F8F9;
    --surface:#FFFFFF;
    --line:#E2E9ED;
    --danger:#C0392B;
    --radius-card:14px;
    --radius-img:12px;
    --radius-btn:10px;
    --shadow-sm:0 1px 2px rgba(14,34,51,.05),0 1px 3px rgba(14,34,51,.04);
    --shadow-card:0 2px 6px rgba(14,34,51,.06),0 8px 24px rgba(14,34,51,.06);
    --shadow-hover:0 6px 16px rgba(14,34,51,.10),0 16px 40px rgba(14,34,51,.08);
    --ease:cubic-bezier(.4,0,.2,1);
  }
  *,*::before,*::after{box-sizing:border-box}
  html{-webkit-text-size-adjust:100%;scroll-behavior:smooth;scroll-padding-top:132px}
  body{
    margin:0;
    font-family:"PingFang SC","Microsoft YaHei","Source Han Sans SC",system-ui,-apple-system,sans-serif;
    font-size:16px;
    line-height:1.75;
    color:var(--ink-700);
    background:var(--bg);
    -webkit-font-smoothing:antialiased;
  }
  a{color:inherit;text-decoration:none;transition:color .2s var(--ease)}
  img{display:block;max-width:100%;height:auto}
  button{font:inherit;cursor:pointer;border:0;background:none;color:inherit}
  input{font:inherit}
  p{margin:0}
  :focus-visible{outline:3px solid rgba(28,110,140,.28);outline-offset:2px;border-radius:6px}

  body .container{width:100%;max-width:1200px;margin:0 auto;padding-left:32px;padding-right:32px}
  @media (max-width:1024px){ body .container{padding-left:24px;padding-right:24px} }
  @media (max-width:640px){ body .container{padding-left:16px;padding-right:16px} }

  /* ---------- Header ---------- */
  .site-header{position:sticky;top:0;z-index:50;background:var(--surface);border-bottom:1px solid var(--line);transition:box-shadow .2s var(--ease)}
  .site-header.is-scrolled{box-shadow:var(--shadow-sm)}
  .header-row{display:flex;align-items:center;gap:28px;height:64px}
  .brand{display:inline-flex;align-items:center;height:34px;font-size:19px;font-weight:600;letter-spacing:0;color:var(--ink-900);white-space:nowrap;transition:color .2s var(--ease)}
  .brand:hover{color:var(--brand-600)}
  .nav-links{display:flex;align-items:center;gap:26px}
  .nav-links a{position:relative;padding:6px 0;font-size:14px;color:var(--ink-700)}
  .nav-links a::after{content:"";position:absolute;left:0;right:0;bottom:0;height:2px;background:var(--brand-600);transform:scaleX(0);transition:transform .2s var(--ease)}
  .nav-links a:hover{color:var(--brand-600)}
  .nav-links a:hover::after,.nav-links a.is-active::after{transform:scaleX(1)}
  .nav-links a.is-active{color:var(--brand-600)}
  .header-tools{margin-left:auto;display:flex;align-items:center;gap:12px}
  .search-box{display:flex;align-items:center;gap:8px;width:240px;height:40px;padding:0 12px;background:var(--bg);border:1px solid var(--line);border-radius:var(--radius-btn);transition:border-color .2s var(--ease),box-shadow .2s var(--ease),background .2s var(--ease)}
  .search-box svg{width:16px;height:16px;color:var(--ink-300);flex:0 0 auto}
  .search-box input{width:100%;border:0;background:none;outline:none;font-size:14px;color:var(--ink-700)}
  .search-box input::placeholder{color:var(--ink-300)}
  .search-box:focus-within{background:var(--surface);border-color:var(--brand-600);box-shadow:0 0 0 3px rgba(28,110,140,.14)}
  .icon-btn{display:inline-flex;align-items:center;justify-content:center;width:36px;height:36px;border:1px solid var(--line);border-radius:10px;background:var(--surface);color:var(--ink-500);transition:all .2s var(--ease)}
  .icon-btn:hover{color:var(--brand-600);border-color:var(--brand-500);background:var(--brand-050)}
  .icon-btn svg{width:17px;height:17px}
  .menu-btn{display:none;align-items:center;justify-content:center;width:40px;height:40px;border:1px solid var(--line);border-radius:10px;color:var(--ink-700);background:var(--surface)}
  .menu-btn svg{width:18px;height:18px}

  .btn{display:inline-flex;align-items:center;justify-content:center;gap:8px;height:44px;padding:0 22px;border:1px solid transparent;border-radius:var(--radius-btn);font-size:14px;font-weight:500;line-height:1;transition:all .2s var(--ease);white-space:nowrap}
  .btn svg{width:16px;height:16px}
  .btn-primary{background:var(--brand-600);color:#fff}
  .btn-primary:hover{background:var(--brand-700);transform:translateY(-1px);box-shadow:var(--shadow-card)}
  .btn-primary:active{transform:translateY(0)}
  .btn-ghost{background:var(--surface);border-color:var(--line);color:var(--ink-900)}
  .btn-ghost:hover{border-color:var(--brand-500);color:var(--brand-600)}
  .btn-sm{height:38px;padding:0 16px;font-size:13px}
  .btn-block{width:100%}

  .channel-bar{position:relative;border-top:1px solid var(--line);background:var(--surface)}
  .channel-bar::after{content:"";position:absolute;right:0;top:1px;bottom:1px;width:28px;background:linear-gradient(to right,rgba(255,255,255,0),#fff);pointer-events:none}
  .channel-scroll{display:flex;align-items:center;gap:8px;height:52px;overflow-x:auto;scroll-snap-type:x proximity;-ms-overflow-style:none;scrollbar-width:none}
  .channel-scroll::-webkit-scrollbar{display:none}
  .channel-pill{flex:0 0 auto;scroll-snap-align:start;padding:7px 16px;border-radius:999px;border-bottom:2px solid transparent;font-size:14px;font-weight:500;color:var(--ink-700);transition:all .2s var(--ease)}
  .channel-pill:hover{background:rgba(28,110,140,.04);color:var(--brand-600)}
  .channel-pill.is-active{background:var(--brand-050);color:var(--brand-600);border-bottom-color:var(--brand-600)}

  /* ---------- Mobile drawer & search panel ---------- */
  .drawer{position:fixed;left:0;right:0;top:64px;bottom:0;z-index:60;background:var(--surface);padding:8px 16px 40px;overflow-y:auto;transform:translateX(102%);transition:transform .25s var(--ease)}
  .drawer.is-open{transform:translateX(0)}
  .drawer a{display:flex;align-items:center;justify-content:space-between;height:48px;font-size:15px;color:var(--ink-700);border-bottom:1px solid var(--line)}
  .drawer a svg{width:16px;height:16px;color:var(--ink-300)}
  .drawer a:hover{color:var(--brand-600)}
  .search-panel{display:none;position:fixed;left:0;right:0;top:64px;z-index:61;background:var(--surface);border-bottom:1px solid var(--line);box-shadow:var(--shadow-card);padding:14px 16px}
  .search-panel.is-open{display:block}
  .search-panel form{display:flex;gap:10px}

  /* ---------- Page body ---------- */
  .page-body{padding:26px 0 88px}
  .breadcrumb{display:flex;flex-wrap:wrap;align-items:center;gap:8px;font-size:13px;color:var(--ink-300)}
  .breadcrumb a:hover{color:var(--brand-600)}
  .breadcrumb .cur{color:var(--ink-500);max-width:60ch;overflow:hidden;text-overflow:ellipsis;white-space:nowrap}
  .channel-label{position:relative;margin:14px 0 22px;padding-left:12px;font-size:20px;font-weight:600;line-height:1.5;color:var(--ink-900)}
  .channel-label::before{content:"";position:absolute;left:0;top:50%;transform:translateY(-50%);width:4px;height:16px;border-radius:2px;background:var(--brand-600)}

  .article-layout{display:grid;grid-template-columns:minmax(0,1fr);gap:40px}
  @media (min-width:1280px){
    .article-layout{grid-template-columns:minmax(0,1fr) 300px;gap:48px;justify-content:space-between}
  }

  .article-card{background:var(--surface);border:1px solid var(--line);border-radius:var(--radius-card);box-shadow:var(--shadow-card);padding:36px 40px 40px}
  @media (max-width:640px){
    .article-card{padding:22px 18px 28px;border-radius:12px}
  }

  .article-head{display:flex;flex-wrap:wrap;align-items:flex-start;justify-content:space-between;gap:20px;padding-bottom:22px;margin-bottom:28px;border-bottom:1px solid var(--line)}
  .article-title{max-width:720px;font-size:clamp(26px,3.6vw,36px);line-height:1.35;font-weight:600;letter-spacing:-.01em;color:var(--ink-900)}
  .meta-row{display:flex;flex-wrap:wrap;align-items:center;gap:10px;margin-top:16px;font-size:14px;color:var(--ink-300)}
  .meta-dot{color:var(--line)}
  .pill{display:inline-flex;align-items:center;padding:4px 10px;border-radius:999px;font-size:12px;line-height:1.5;background:var(--brand-050);color:var(--brand-600)}
  .pill-accent{background:var(--accent-050);color:var(--accent-600)}
  .share-group{display:flex;align-items:center;gap:8px}
  .share-group .icon-btn.is-copied{color:var(--accent-600);border-color:var(--accent-500);background:var(--accent-050)}

  .article-body{max-width:760px;font-size:17px;line-height:1.9;color:var(--ink-700)}
  .article-body p{margin:0 0 1.15em}
  .article-body h2{font-size:23px;line-height:1.4;font-weight:600;color:var(--ink-900);margin:2.2em 0 .8em}
  .article-body h3{font-size:19px;line-height:1.5;font-weight:600;color:var(--ink-900);margin:1.8em 0 .7em}
  .article-body h4{font-size:17px;font-weight:600;color:var(--ink-900);margin:1.5em 0 .6em}
  .article-body a{color:var(--brand-600);border-bottom:1px solid var(--brand-100)}
  .article-body a:hover{border-bottom-color:var(--brand-600)}
  .article-body strong{color:var(--ink-900);font-weight:600}
  .article-body ul{list-style:disc;padding-left:1.4em;margin:0 0 1.2em}
  .article-body ol{list-style:decimal;padding-left:1.4em;margin:0 0 1.2em}
  .article-body li{margin:.5em 0;line-height:1.85}
  .article-body li::marker{color:var(--brand-600)}
  .article-body blockquote{margin:1.6em 0;padding:14px 20px;border-left:3px solid var(--brand-600);background:rgba(28,110,140,.04);border-radius:0 12px 12px 0;color:var(--ink-700)}
  .article-body blockquote p:last-child{margin-bottom:0}
  .article-body img{border-radius:var(--radius-img);margin:1.6em 0;width:100%}
  .article-body figure{margin:1.6em 0}
  .article-body figcaption{margin-top:10px;font-size:13px;line-height:1.6;color:var(--ink-500);text-align:center}
  .article-body hr{border:0;border-top:1px solid var(--line);margin:2em 0}
  .article-body table{width:100%;border-collapse:collapse;margin:1.6em 0;font-size:15px}
  .article-body th,.article-body td{padding:10px 12px;border-bottom:1px solid var(--line);text-align:left}
  .article-body th{background:var(--brand-050);color:var(--ink-900);font-weight:600}
  .article-body code{padding:2px 6px;border-radius:6px;background:var(--brand-050);font-size:15px;color:var(--brand-700)}

  .article-empty{display:flex;flex-direction:column;align-items:center;gap:14px;padding:56px 20px;text-align:center}
  .article-empty svg{width:44px;height:44px;color:var(--brand-500)}
  .article-empty p{font-size:15px;color:var(--ink-500)}

  .article-foot{margin-top:40px;padding-top:26px;border-top:1px solid var(--line)}
  .foot-title{font-size:16px;font-weight:600;color:var(--ink-900);margin-bottom:14px}
  .tag-list{display:flex;flex-wrap:wrap;gap:8px}
  .tag-list a{padding:5px 12px;border:1px solid var(--line);border-radius:999px;font-size:12.5px;color:var(--ink-500);background:var(--surface);transition:all .2s var(--ease)}
  .tag-list a:hover{color:var(--brand-600);border-color:var(--brand-500);background:var(--brand-050)}

  .nav-cards{display:grid;grid-template-columns:repeat(2,minmax(0,1fr));gap:16px;margin-top:26px}
  @media (max-width:640px){ .nav-cards{grid-template-columns:1fr} }
  .nav-card{display:block;padding:16px 18px;border:1px solid var(--line);border-radius:12px;background:var(--bg);transition:all .2s var(--ease)}
  .nav-card:hover{background:var(--surface);border-color:var(--brand-500);transform:translateY(-2px);box-shadow:var(--shadow-card)}
  .nav-card .nc-label{display:flex;align-items:center;gap:6px;font-size:12px;color:var(--ink-300);margin-bottom:8px}
  .nav-card .nc-label svg{width:13px;height:13px}
  .nav-card .nc-title{font-size:15px;font-weight:600;color:var(--ink-900);overflow:hidden;text-overflow:ellipsis;white-space:nowrap}
  .nav-card.is-next .nc-label{justify-content:flex-end}

  .rel-grid{display:grid;grid-template-columns:repeat(3,minmax(0,1fr));gap:20px;margin-top:18px}
  @media (max-width:1024px){ .rel-grid{grid-template-columns:repeat(2,minmax(0,1fr))} }
  @media (max-width:640px){ .rel-grid{grid-template-columns:1fr} }
  .mini-card{display:block;overflow:hidden;background:var(--surface);border:1px solid var(--line);border-radius:var(--radius-card);transition:transform .2s var(--ease),box-shadow .2s var(--ease),border-color .2s var(--ease)}
  .mini-card:hover{transform:translateY(-2px);box-shadow:var(--shadow-hover);border-color:var(--brand-100)}
  .mini-card .mc-media{position:relative;overflow:hidden;background:var(--brand-050)}
  .mini-card .mc-media img{width:100%;aspect-ratio:16/9;object-fit:cover;transition:transform .3s var(--ease)}
  .mini-card:hover .mc-media img{transform:scale(1.03)}
  .mini-card .mc-tag{position:absolute;left:12px;top:12px}
  .mini-card .mc-body{padding:14px 16px 18px}
  .mini-card .mc-title{font-size:15px;font-weight:600;line-height:1.55;color:var(--ink-900);display:-webkit-box;-webkit-line-clamp:2;-webkit-box-orient:vertical;overflow:hidden}
  .mini-card:hover .mc-title{color:var(--brand-600)}
  .mini-card .mc-meta{margin-top:10px;font-size:12px;color:var(--ink-300)}

  .foot-actions{margin-top:28px;display:flex;flex-wrap:wrap;gap:12px}

  /* ---------- Sidebar ---------- */
  .article-side{display:none}
  @media (min-width:1280px){ .article-side{display:block} }
  .side-card{background:var(--surface);border:1px solid var(--line);border-radius:var(--radius-card);padding:20px;margin-bottom:20px}
  .side-card h3{position:relative;margin-bottom:14px;padding-left:10px;font-size:15px;font-weight:600;color:var(--ink-900)}
  .side-card h3::before{content:"";position:absolute;left:0;top:50%;transform:translateY(-50%);width:4px;height:14px;border-radius:2px;background:var(--brand-600)}
  .toc-card{position:sticky;top:96px}
  .toc a{display:block;padding:5px 0 5px 12px;border-left:2px solid transparent;font-size:13.5px;line-height:1.6;color:var(--ink-500);transition:all .2s var(--ease)}
  .toc a:hover{color:var(--brand-600)}
  .toc a.level-3{padding-left:24px;font-size:13px}
  .toc a.is-active{color:var(--brand-600);border-left-color:var(--brand-600);font-weight:500}
  .toc-empty{font-size:13px;color:var(--ink-300)}
  .side-list li{border-bottom:1px dashed var(--line)}
  .side-list li:last-child{border-bottom:0}
  .side-list a{display:flex;align-items:center;justify-content:space-between;gap:10px;padding:10px 0;font-size:13.5px;color:var(--ink-700);line-height:1.6}
  .side-list a:hover{color:var(--brand-600)}
  .side-list a svg{width:14px;height:14px;flex:0 0 auto;color:var(--ink-300);transition:transform .2s var(--ease)}
  .side-list a:hover svg{transform:translateX(4px);color:var(--brand-600)}

  /* ---------- Footer ---------- */
  .site-footer{background:var(--ink-900);color:#C9D6DE;padding:56px 0 0}
  .footer-grid{display:grid;grid-template-columns:1.4fr 1fr 1fr 1.2fr;gap:36px}
  .fb-logo{font-size:19px;font-weight:600;color:#fff;margin-bottom:12px}
  .footer-brand p{max-width:300px;font-size:12.5px;line-height:1.8;color:#9FB3C0}
  .footer-col h4{position:relative;margin:0 0 14px;font-size:14px;font-weight:600;color:#fff}
  .footer-col ul li{margin-bottom:10px}
  .footer-col ul a{font-size:13.5px;color:#C9D6DE}
  .footer-col ul a:hover{color:#fff;text-decoration:underline}
  .footer-toggle{display:none}
  .to-top{display:inline-flex;align-items:center;justify-content:center;width:40px;height:40px;margin-top:16px;border:1px solid var(--brand-500);border-radius:10px;color:#fff;background:transparent;transition:all .2s var(--ease)}
  .to-top svg{width:18px;height:18px}
  .to-top:hover{background:var(--brand-600);border-color:var(--brand-600)}
  .footer-bottom{display:flex;flex-wrap:wrap;align-items:center;justify-content:space-between;gap:12px;margin-top:36px;padding:20px 0;border-top:1px solid rgba(255,255,255,.12);font-size:12.5px;color:#8FA6B4}
  .footer-bottom a:hover{color:#fff;text-decoration:underline}

  .float-top{position:fixed;right:24px;bottom:24px;z-index:40;display:none;align-items:center;justify-content:center;width:44px;height:44px;border:1px solid var(--line);border-radius:12px;background:var(--surface);color:var(--brand-600);box-shadow:var(--shadow-card);transition:all .2s var(--ease)}
  .float-top.is-show{display:inline-flex}
  .float-top:hover{background:var(--brand-600);color:#fff;border-color:var(--brand-600)}
  .float-top svg{width:18px;height:18px}

  @media (max-width:1024px){
    .nav-links{display:none}
    .search-box{display:none}
    .menu-btn{display:inline-flex}
    .header-row{gap:16px}
  }
  @media (max-width:768px){
    .footer-grid{grid-template-columns:1fr;gap:0}
    .footer-col{border-bottom:1px solid rgba(255,255,255,.12)}
    .footer-col h4{display:flex;align-items:center;justify-content:space-between;padding:16px 0;margin:0}
    .footer-toggle{display:inline-flex;align-items:center;justify-content:center;width:24px;height:24px;color:#8FA6B4;transition:transform .2s var(--ease)}
    .footer-toggle svg{width:16px;height:16px}
    .footer-col ul{display:none;padding-bottom:14px}
    .footer-col.is-open ul{display:block}
    .footer-col.is-open .footer-toggle{transform:rotate(180deg)}
    .footer-brand{padding:20px 0}
    .footer-brand p{max-width:none}
    .footer-bottom{margin-top:20px}
  }
  @media (max-width:640px){
    .page-body{padding:20px 0 64px}
    .article-head{margin-bottom:22px}
    .rel-grid{gap:16px}
    .float-top{right:16px;bottom:16px}
  }
  @media (prefers-reduced-motion:reduce){
    *{transition:none !important;animation:none !important;scroll-behavior:auto !important}
  }

/* roulang page: category2 */
:root{
  --brand-700:#14556E;
  --brand-600:#1C6E8C;
  --brand-500:#2A88A6;
  --brand-100:#D8E9EF;
  --brand-050:#EEF5F8;
  --accent-600:#C2762C;
  --accent-500:#D98A3D;
  --accent-050:#FBF1E5;
  --ink-900:#0E2233;
  --ink-700:#2C4257;
  --ink-500:#5A6E7E;
  --ink-300:#93A3AF;
  --bg:#F6F8F9;
  --surface:#FFFFFF;
  --line:#E2E9ED;
  --danger:#C0392B;
  --radius-card:14px;
  --radius-img:12px;
  --radius-btn:10px;
  --shadow-sm:0 1px 2px rgba(14,34,51,.05),0 1px 3px rgba(14,34,51,.04);
  --shadow-card:0 2px 6px rgba(14,34,51,.06),0 8px 24px rgba(14,34,51,.06);
  --shadow-hover:0 6px 16px rgba(14,34,51,.10),0 16px 40px rgba(14,34,51,.08);
  --ease:cubic-bezier(.4,0,.2,1);
}

*,*::before,*::after{box-sizing:border-box}
html{-webkit-text-size-adjust:100%;scroll-behavior:smooth;scroll-padding-top:132px}
body{
  margin:0;
  font-family:"PingFang SC","Microsoft YaHei","Source Han Sans SC",system-ui,-apple-system,sans-serif;
  font-size:16px;
  line-height:1.75;
  color:var(--ink-700);
  background:var(--bg);
  -webkit-font-smoothing:antialiased;
}
body.drawer-open{overflow:hidden}
a{color:inherit;text-decoration:none;transition:color 200ms var(--ease)}
a:hover{color:var(--brand-600)}
img{display:block;max-width:100%}
button{font:inherit;color:inherit;background:none;border:0;cursor:pointer}
input{font:inherit;color:inherit}
h1,h2,h3,h4{margin:0;color:var(--ink-900);font-weight:600;letter-spacing:0}
p{margin:0}
ul,ol{margin:0;padding:0;list-style:none}
svg{display:block}

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

/* ---------- 头部导航 ---------- */
.site-header{position:sticky;top:0;z-index:60;background:var(--surface);transition:box-shadow 200ms var(--ease)}
.site-header.is-scrolled{box-shadow:var(--shadow-sm)}
.nav-bar{display:flex;align-items:center;gap:20px;height:64px}
.brand{
  font-size:19px;
  font-weight:600;
  line-height:1.2;
  letter-spacing:0;
  color:var(--ink-900);
  white-space:nowrap;
}
.brand:hover{color:var(--brand-600)}
.nav-links{display:flex;align-items:center;gap:2px;margin-left:6px}
.nav-links a{
  position:relative;
  display:inline-flex;
  align-items:center;
  height:34px;
  padding:0 12px;
  border-radius:8px;
  font-size:14px;
  font-weight:500;
  color:var(--ink-700);
}
.nav-links a:hover{color:var(--brand-600);background:var(--brand-050)}
.nav-links a.is-active{color:var(--brand-700);background:var(--brand-050)}
.nav-links a.is-active::after{
  content:"";
  position:absolute;
  left:12px;right:12px;bottom:3px;
  height:2px;
  border-radius:2px;
  background:var(--brand-600);
}
.nav-tools{margin-left:auto;display:flex;align-items:center;gap:10px}
.nav-search{position:relative;display:flex;align-items:center;width:240px}
.nav-search input{
  width:100%;
  height:40px;
  padding:0 42px 0 14px;
  border:1px solid var(--line);
  border-radius:var(--radius-btn);
  background:var(--surface);
  font-size:14px;
  outline:none;
  transition:border-color 200ms var(--ease),box-shadow 200ms var(--ease);
}
.nav-search input::placeholder{color:var(--ink-300)}
.nav-search input:focus{border-color:var(--brand-600);box-shadow:0 0 0 3px rgba(28,110,140,.14)}
.nav-search button{
  position:absolute;
  right:5px;
  width:30px;height:30px;
  display:grid;place-items:center;
  border-radius:8px;
  color:var(--ink-500);
  transition:all 200ms var(--ease);
}
.nav-search button:hover{color:var(--brand-600);background:var(--brand-050)}
.nav-search button svg{width:16px;height:16px}
.nav-icon-btn,.nav-burger{
  display:none;
  width:40px;height:40px;
  align-items:center;
  justify-content:center;
  border:1px solid var(--line);
  border-radius:var(--radius-btn);
  color:var(--ink-700);
  transition:all 200ms var(--ease);
}
.nav-icon-btn svg,.nav-burger svg{width:18px;height:18px}
.nav-icon-btn:hover,.nav-burger:hover{border-color:var(--brand-600);color:var(--brand-600);background:var(--brand-050)}

.btn{
  display:inline-flex;
  align-items:center;
  justify-content:center;
  gap:8px;
  height:44px;
  padding:0 22px;
  border:1px solid transparent;
  border-radius:var(--radius-btn);
  font-size:15px;
  font-weight:500;
  line-height:1;
  cursor:pointer;
  transition:all 200ms var(--ease);
}
.btn svg{width:18px;height:18px}
.btn-primary{background:var(--brand-600);color:#fff}
.btn-primary:hover{background:var(--brand-700);color:#fff;transform:translateY(-1px);box-shadow:var(--shadow-card)}
.btn-ghost{background:var(--surface);color:var(--ink-900);border-color:var(--line)}
.btn-ghost:hover{border-color:var(--brand-600);color:var(--brand-700);background:var(--brand-050)}
.btn-sm{height:38px;padding:0 16px;font-size:14px}
.btn:focus-visible{outline:3px solid rgba(28,110,140,.28);outline-offset:2px}

.search-pop{
  position:absolute;
  left:0;right:0;top:64px;
  background:var(--surface);
  border-bottom:1px solid var(--line);
  box-shadow:var(--shadow-card);
  padding:14px 0;
  display:none;
}
.search-pop.is-open{display:block}
.search-pop-form{display:flex;gap:10px}
.search-pop-form input{
  flex:1;
  height:44px;
  padding:0 14px;
  border:1px solid var(--line);
  border-radius:var(--radius-btn);
  font-size:15px;
  background:var(--surface);
  outline:none;
  transition:border-color 200ms var(--ease),box-shadow 200ms var(--ease);
}
.search-pop-form input::placeholder{color:var(--ink-300)}
.search-pop-form input:focus{border-color:var(--brand-600);box-shadow:0 0 0 3px rgba(28,110,140,.14)}

.channel-bar{border-top:1px solid var(--line);background:var(--surface)}
.channel-scroll{
  display:flex;
  align-items:center;
  gap:6px;
  height:52px;
  overflow-x:auto;
  scroll-snap-type:x proximity;
  scrollbar-width:none;
}
.channel-scroll::-webkit-scrollbar{display:none}
.channel-pill{
  flex:0 0 auto;
  scroll-snap-align:start;
  display:inline-flex;
  align-items:center;
  height:34px;
  padding:0 16px;
  border-radius:999px;
  font-size:14px;
  font-weight:500;
  color:var(--ink-700);
  white-space:nowrap;
  transition:all 200ms var(--ease);
}
.channel-pill:hover{background:rgba(28,110,140,.06);color:var(--brand-700)}
.channel-pill.is-active{
  background:var(--brand-050);
  color:var(--brand-600);
  box-shadow:inset 0 -2px 0 var(--brand-600);
}

.mobile-drawer{
  position:fixed;
  top:64px;left:0;right:0;bottom:0;
  z-index:70;
  background:var(--surface);
  overflow-y:auto;
  opacity:0;
  visibility:hidden;
  transform:translateY(-8px);
  transition:opacity 240ms var(--ease),transform 240ms var(--ease),visibility 240ms var(--ease);
}
.mobile-drawer.is-open{opacity:1;visibility:visible;transform:none}
.drawer-nav{display:grid;padding:8px 16px 32px}
.drawer-nav a{
  display:flex;
  align-items:center;
  justify-content:space-between;
  gap:12px;
  height:48px;
  border-bottom:1px solid var(--line);
  font-size:16px;
  color:var(--ink-900);
}
.drawer-nav a.is-active{color:var(--brand-600);font-weight:600}
.drawer-nav a svg{width:16px;height:16px;color:var(--ink-300)}

/* ---------- 页头 ---------- */
.cat-hero{
  background:#F4F9FB;
  border-bottom:1px solid var(--line);
  padding:46px 0 44px;
}
.cat-hero-grid{
  display:grid;
  grid-template-columns:1.9fr 1fr;
  gap:48px;
  align-items:center;
}
.cat-hero-text{max-width:640px}
.breadcrumb{
  display:flex;
  flex-wrap:wrap;
  align-items:center;
  gap:8px;
  margin-bottom:16px;
  font-size:13px;
  color:var(--ink-500);
}
.breadcrumb span.sep{color:var(--ink-300)}
.breadcrumb a:hover{color:var(--brand-600)}
.eyebrow{
  display:inline-flex;
  align-items:center;
  gap:8px;
  margin-bottom:14px;
  padding:4px 12px;
  border-radius:999px;
  background:var(--accent-050);
  color:var(--accent-600);
  font-size:12px;
  font-weight:500;
}
.cat-hero h1{
  font-size:clamp(28px,3.4vw,38px);
  line-height:1.3;
  letter-spacing:0;
}
.cat-hero-desc{
  margin-top:16px;
  max-width:560px;
  font-size:16px;
  line-height:1.8;
  color:var(--ink-500);
}
.cat-hero-meta{display:flex;flex-wrap:wrap;gap:10px;margin-top:22px}
.chip{
  display:inline-flex;
  align-items:center;
  gap:6px;
  height:30px;
  padding:0 13px;
  border-radius:999px;
  background:var(--surface);
  border:1px solid var(--line);
  font-size:12px;
  color:var(--ink-500);
}
.chip strong{color:var(--brand-700);font-weight:600}
.cat-hero-media img{
  width:100%;
  aspect-ratio:4/5;
  max-height:300px;
  object-fit:cover;
  border-radius:var(--radius-card);
  box-shadow:var(--shadow-card);
}

/* ---------- 通用板块 ---------- */
.section{padding:52px 0}
.section-alt{background:var(--surface);border-top:1px solid var(--line);border-bottom:1px solid var(--line)}
.section-head{
  display:flex;
  align-items:flex-end;
  justify-content:space-between;
  gap:24px;
  margin-bottom:34px;
}
.section-head h2{
  position:relative;
  padding-left:14px;
  font-size:clamp(22px,2.2vw,27px);
  line-height:1.35;
}
.section-head h2::before{
  content:"";
  position:absolute;
  left:0;top:50%;
  transform:translateY(-50%);
  width:4px;height:16px;
  border-radius:2px;
  background:var(--brand-600);
}
.section-head .sub{margin-top:8px;font-size:14px;color:var(--ink-500)}
.text-link{
  display:inline-flex;
  align-items:center;
  gap:6px;
  flex:0 0 auto;
  font-size:14px;
  font-weight:500;
  color:var(--brand-600);
}
.text-link svg{width:16px;height:16px;transition:transform 200ms var(--ease)}
.text-link:hover{color:var(--brand-700)}
.text-link:hover svg{transform:translateX(4px)}

/* ---------- 时间轴步骤 ---------- */
.timeline{position:relative;padding-left:38px;max-width:920px}
.timeline::before{
  content:"";
  position:absolute;
  left:12px;top:8px;bottom:8px;
  width:2px;
  background:var(--line);
}
.timeline-item{position:relative;padding-bottom:30px}
.timeline-item:last-child{padding-bottom:0}
.timeline-node{
  position:absolute;
  left:-38px;top:2px;
  width:26px;height:26px;
  display:grid;place-items:center;
  border:2px solid var(--brand-500);
  border-radius:999px;
  background:var(--surface);
  color:var(--brand-700);
  font-size:11px;
  font-weight:600;
  line-height:1;
}
.timeline-item .step{
  display:inline-flex;
  align-items:center;
  height:24px;
  padding:0 10px;
  margin-bottom:10px;
  border-radius:999px;
  background:var(--brand-050);
  color:var(--brand-600);
  font-size:12px;
  font-weight:500;
}
.timeline-item h3{
  font-size:19px;
  line-height:1.5;
  transition:color 200ms var(--ease);
}
.timeline-item:hover h3{color:var(--brand-600)}
.timeline-item p{
  margin-top:8px;
  max-width:720px;
  font-size:15px;
  line-height:1.8;
  color:var(--ink-500);
}
.timeline-meta{
  display:flex;
  flex-wrap:wrap;
  align-items:center;
  gap:8px;
  margin-top:10px;
  font-size:12px;
  color:var(--ink-300);
}
.timeline-meta .dot{color:var(--ink-300)}

/* ---------- 对比要点 ---------- */
.compare-list{
  display:grid;
  grid-template-columns:1fr 1fr;
  gap:0 44px;
  border-top:1px solid var(--line);
}
.compare-row{
  display:grid;
  grid-template-columns:112px 1fr;
  gap:16px;
  padding:18px 0;
  border-bottom:1px solid var(--line);
}
.compare-row dt{
  font-size:14px;
  font-weight:600;
  color:var(--ink-900);
}
.compare-row dd{
  margin:0;
  font-size:15px;
  line-height:1.8;
  color:var(--ink-500);
}

/* ---------- FAQ ---------- */
.faq-list{display:grid;gap:12px;max-width:880px}
.faq-item{
  background:var(--surface);
  border:1px solid var(--line);
  border-radius:var(--radius-card);
  overflow:hidden;
  transition:border-color 200ms var(--ease),box-shadow 200ms var(--ease);
}
.faq-item[open]{border-color:var(--brand-100);box-shadow:var(--shadow-sm)}
.faq-item summary{
  display:flex;
  align-items:center;
  justify-content:space-between;
  gap:16px;
  padding:18px 22px;
  font-size:16px;
  font-weight:600;
  color:var(--ink-900);
  cursor:pointer;
  list-style:none;
}
.faq-item summary::-webkit-details-marker{display:none}
.faq-item summary::after{
  content:"";
  flex:0 0 auto;
  width:12px;height:12px;
  color:var(--ink-500);
  background:
    linear-gradient(currentColor,currentColor) center/12px 2px no-repeat,
    linear-gradient(currentColor,currentColor) center/2px 12px no-repeat;
  transition:background 200ms var(--ease),color 200ms var(--ease);
}
.faq-item[open] summary::after{
  color:var(--brand-600);
  background:linear-gradient(currentColor,currentColor) center/12px 2px no-repeat;
}
.faq-body{
  margin:0 22px 20px;
  padding-left:14px;
  border-left:3px solid var(--accent-500);
  font-size:15px;
  line-height:1.8;
  color:var(--ink-700);
}

/* ---------- CTA ---------- */
.cta-band{
  display:flex;
  align-items:center;
  justify-content:space-between;
  gap:32px;
  padding:34px 38px;
  border:1px solid var(--brand-100);
  border-radius:16px;
  background:var(--brand-050);
}
.cta-band h2{font-size:22px;line-height:1.4}
.cta-band p{margin-top:8px;font-size:14px;color:var(--ink-500)}
.cta-actions{display:flex;flex-wrap:wrap;gap:12px;flex:0 0 auto}

/* ---------- 页脚 ---------- */
.site-footer{
  margin-top:56px;
  padding-top:54px;
  background:var(--ink-900);
  color:#C9D6DE;
}
.footer-grid{
  display:grid;
  grid-template-columns:1.4fr 1fr 1fr 1.25fr;
  gap:40px;
}
.fb-logo{font-size:18px;font-weight:600;color:#fff;margin-bottom:12px}
.footer-brand p{max-width:290px;font-size:13px;line-height:1.85;color:#9FB2BE}
.site-footer h4{
  display:flex;
  align-items:center;
  justify-content:space-between;
  margin-bottom:16px;
  font-size:14px;
  color:#fff;
}
.site-footer ul{display:grid;gap:10px}
.site-footer ul a{font-size:14px;color:#C9D6DE}
.site-footer ul a:hover{color:#fff;text-decoration:underline}
.footer-toggle{display:none}
.footer-toggle svg{width:16px;height:16px;transition:transform 200ms var(--ease)}
.to-top{
  margin-top:20px;
  width:40px;height:40px;
  display:grid;place-items:center;
  border:1px solid var(--brand-500);
  border-radius:var(--radius-btn);
  color:#fff;
  transition:all 200ms var(--ease);
}
.to-top svg{width:18px;height:18px}
.to-top:hover{background:var(--brand-600);border-color:var(--brand-600);transform:translateY(-2px)}
.footer-bottom{
  display:flex;
  align-items:center;
  justify-content:space-between;
  gap:16px;
  margin-top:40px;
  padding:20px 0;
  border-top:1px solid rgba(255,255,255,.12);
  font-size:13px;
  color:#8FA3B0;
}
.footer-bottom a{color:#8FA3B0}
.footer-bottom a:hover{color:#fff;text-decoration:underline}

/* ---------- 入场动效 ---------- */
@keyframes fadeUp{
  from{opacity:0;transform:translateY(12px)}
  to{opacity:1;transform:none}
}
.fade-up{animation:fadeUp 520ms var(--ease) both}
@media (prefers-reduced-motion:reduce){
  *{animation:none !important;transition:none !important;scroll-behavior:auto !important}
}

/* ---------- 响应式 ---------- */
@media (max-width:1023px){
  body .container{padding-left:24px;padding-right:24px}
  .cat-hero-grid{grid-template-columns:1fr;gap:28px}
  .cat-hero-media img{aspect-ratio:16/9;max-height:240px}
  .compare-list{grid-template-columns:1fr;gap:0}
  .footer-grid{grid-template-columns:1fr 1fr;gap:32px}
}
@media (max-width:900px){
  .nav-links{display:none}
  .nav-search{display:none}
  .nav-icon-btn{display:inline-flex}
  .nav-burger{display:inline-flex}
  .footer-grid{grid-template-columns:1fr 1fr}
}
@media (max-width:767px){
  .section{padding:40px 0}
  .section-head{flex-direction:column;align-items:flex-start;gap:12px;margin-bottom:24px}
  .cta-band{flex-direction:column;align-items:flex-start;padding:26px 22px}
  .cta-actions{width:100%}
  .cta-actions .btn{flex:1 1 100%}
  .footer-grid{grid-template-columns:1fr;gap:0}
  .footer-col{border-bottom:1px solid rgba(255,255,255,.1);padding:16px 0}
  .footer-col h4{margin-bottom:0}
  .footer-toggle{display:inline-flex}
  .footer-col ul{display:none;margin-top:12px}
  .footer-col.is-open ul{display:grid}
  .footer-col.is-open .footer-toggle svg{transform:rotate(180deg)}
  .footer-brand p{margin-top:12px}
  .footer-bottom{flex-direction:column;align-items:flex-start}
  .faq-item summary{padding:16px}
  .faq-body{margin:0 16px 16px}
}
@media (max-width:640px){
  body .container{padding-left:16px;padding-right:16px}
  .nav-tools .btn{display:none}
  .timeline{padding-left:32px}
  .timeline::before{left:10px}
  .timeline-node{left:-32px;width:22px;height:22px;font-size:10px}
  .compare-row{grid-template-columns:1fr;gap:6px}
  .btn{width:100%}
  .cta-actions .btn{width:100%}
}