/* roulang page: index */
:root{
  --brand-600:#E85D04;
  --brand-500:#F2790B;
  --brand-700:#C94E02;
  --brand-100:#FDEBD9;
  --teal-600:#0F9E8E;
  --teal-100:#DCF3EF;
  --night:#171B20;
  --ink-900:#14181C;
  --ink-600:#4A545C;
  --ink-400:#7C868E;
  --line:#E4E0D8;
  --line-soft:#EFECE6;
  --paper:#F7F5F1;
  --card:#FFFFFF;
  --error:#C0392B;
  --r-card:14px;
  --r-btn:10px;
  --r-badge:6px;
  --r-input:10px;
  --r-img:12px;
  --sh1:0 1px 2px rgba(20,24,28,.06);
  --sh2:0 10px 28px -14px rgba(20,24,28,.20);
  --mono:ui-monospace,SFMono-Regular,"SF Mono",Menlo,Consolas,"Liberation Mono",monospace;
}
*,*::before,*::after{box-sizing:border-box}
html{-webkit-text-size-adjust:100%;scroll-behavior:smooth}
body{
  margin:0;
  font-family:-apple-system,"PingFang SC","HarmonyOS Sans SC","Microsoft YaHei","Noto Sans SC",sans-serif;
  font-size:16px;
  line-height:1.85;
  color:var(--ink-600);
  background:var(--paper);
  -webkit-font-smoothing:antialiased;
}
img{max-width:100%;display:block;border-style:none}
a{color:var(--ink-600);text-decoration:none;transition:color .18s ease-out}
a:hover{color:var(--brand-600)}
a:focus-visible,button:focus-visible,input:focus-visible{outline:2px solid var(--teal-600);outline-offset:2px}
h1,h2,h3,h4{margin:0;color:var(--ink-900);line-height:1.3}
h1{font-size:42px;font-weight:800;line-height:1.22;letter-spacing:0}
h3{font-size:22px;font-weight:600}
h4{font-size:18px;font-weight:600}
p{margin:0 0 1.2em}
ul,ol{margin:0 0 1.2em;padding-left:1.3em}
li{margin-bottom:.4em}
button{font-family:inherit}
.container{width:100%;max-width:1200px;margin:0 auto;padding:0 24px}
.section{padding:88px 0}
.section-tight{padding:64px 0}
.sec-head{display:flex;align-items:flex-end;justify-content:space-between;gap:24px;margin-bottom:40px;flex-wrap:wrap}
.sec-title{font-size:30px;font-weight:700;color:var(--ink-900);line-height:1.3;margin:0}
.sec-title::before{content:"";display:block;width:32px;height:3px;border-radius:2px;background:var(--brand-600);margin-bottom:12px}
.sec-desc{margin:12px 0 0;font-size:15px;line-height:1.8;color:var(--ink-400);max-width:640px}
.more-link{font-size:14px;font-weight:600;color:var(--brand-600);white-space:nowrap}
.more-link:hover{color:var(--brand-700);text-decoration:underline;text-underline-offset:3px}

/* ---------- buttons ---------- */
.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:600;border:1.5px solid transparent;cursor:pointer;transition:background-color .18s ease-out,color .18s ease-out,border-color .18s ease-out,transform .18s ease-out,box-shadow .18s ease-out;white-space:nowrap;background:none}
.btn-primary{background:var(--brand-600);color:#fff;border-color:var(--brand-600);box-shadow:var(--sh1)}
.btn-primary:hover{background:var(--brand-700);border-color:var(--brand-700);color:#fff;transform:translateY(-1px);box-shadow:var(--sh2)}
.btn-primary:active{transform:translateY(0);box-shadow:var(--sh1)}
.btn-secondary{background:#fff;color:var(--ink-900);border-color:var(--ink-900)}
.btn-secondary:hover{color:var(--brand-600);border-color:var(--brand-600)}
.btn-light{background:#fff;color:var(--ink-900);border-color:#fff}
.btn-light:hover{color:var(--brand-600);background:#fff}
.btn-outline-light{background:transparent;color:#F7F5F1;border-color:rgba(247,245,241,.45)}
.btn-outline-light:hover{color:var(--brand-500);border-color:var(--brand-500)}
.btn-sm{height:38px;padding:0 16px;font-size:14px}
.btn-lg{height:52px;padding:0 28px;font-size:16px}
.btn-ghost{height:auto;padding:0 2px;border:0;border-bottom:2px solid var(--brand-600);border-radius:0;color:var(--brand-600);background:none}
.btn-ghost:hover{color:var(--brand-700);border-bottom-color:var(--brand-700)}
.btn[disabled],.btn.is-disabled{background:#D9D5CE;color:#8A9199;border-color:#D9D5CE;box-shadow:none;cursor:not-allowed;transform:none}
.link-ghost{font-size:14px;font-weight:600;color:var(--ink-600);border-bottom:2px solid transparent;padding-bottom:2px;transition:color .18s ease-out,border-color .18s ease-out}
.link-ghost:hover{color:var(--brand-600);border-bottom-color:var(--brand-600)}

/* ---------- badges ---------- */
.badge{display:inline-flex;align-items:center;gap:6px;font-size:12px;font-weight:600;padding:3px 10px;border-radius:var(--r-badge);border:1px solid transparent;line-height:1.6}
.badge-amber{background:var(--brand-100);color:var(--brand-600);border-color:rgba(232,93,4,.32)}
.badge-teal{background:var(--teal-100);color:var(--teal-600);border-color:rgba(15,158,142,.32)}
.badge-mute{background:#F1EFEA;color:var(--ink-400);border-color:var(--line)}

/* ---------- header ---------- */
.site-header{position:sticky;top:0;z-index:90;background:rgba(247,245,241,.94);backdrop-filter:saturate(150%) blur(8px);-webkit-backdrop-filter:saturate(150%) blur(8px);border-bottom:1px solid transparent;transition:border-color .2s ease-out,box-shadow .2s ease-out}
.site-header.is-scrolled{border-bottom-color:var(--line);box-shadow:var(--sh1)}
.nav-inner{display:flex;align-items:center;gap:24px;min-height:72px}
.logo{display:flex;align-items:center;gap:10px;flex:none}
.logo-mark{width:34px;height:34px;border-radius:8px;background:var(--brand-600);display:grid;place-items:center;color:#fff;flex:none;box-shadow:var(--sh1)}
.logo-mark svg{width:19px;height:19px;stroke:#fff;fill:none;stroke-width:1.8;stroke-linecap:round;stroke-linejoin:round}
.logo-text{display:flex;flex-direction:column;line-height:1.15}
.logo-text strong{font-size:17px;font-weight:800;color:var(--ink-900);letter-spacing:0}
.logo-text em{font-style:normal;font-size:11px;font-weight:500;color:var(--ink-400);letter-spacing:.6px;margin-top:2px}
.main-nav{display:flex;align-items:center;gap:4px;margin-left:auto}
.main-nav a{position:relative;padding:9px 12px;font-size:15px;font-weight:500;border-radius:8px}
.main-nav a::after{content:"";position:absolute;left:12px;right:12px;bottom:2px;height:2px;border-radius:2px;background:var(--brand-600);transform:scaleX(0);transform-origin:center;transition:transform .2s ease-out}
.main-nav a:hover{color:var(--brand-600)}
.main-nav a.is-active{color:var(--ink-900);font-weight:600}
.main-nav a.is-active::after{transform:scaleX(1)}
.nav-actions{display:flex;align-items:center;gap:16px;flex:none}
.nav-burger{display:none;width:42px;height:42px;border-radius:10px;border:1px solid var(--line);background:#fff;cursor:pointer;align-items:center;justify-content:center;padding:0}
.nav-burger span{display:block;width:18px;height:2px;background:var(--ink-900);border-radius:2px;position:relative}
.nav-burger span::before,.nav-burger span::after{content:"";position:absolute;left:0;width:18px;height:2px;background:var(--ink-900);border-radius:2px}
.nav-burger span::before{top:-6px}
.nav-burger span::after{top:6px}
.drawer{display:none;border-top:1px solid var(--line);background:#fff;padding:12px 0 20px}
.drawer.is-open{display:block}
.drawer a{display:block;padding:13px 0;font-size:16px;font-weight:500;border-bottom:1px solid var(--line-soft)}
.drawer a:last-of-type{border-bottom:0}
.drawer .btn{width:100%;margin-top:16px}

/* ---------- hero ---------- */
.hero{background:var(--night);color:#C9CFD4;position:relative;overflow:hidden;padding-top:64px}
.hero-grid{display:grid;grid-template-columns:1.05fr .95fr;gap:48px;align-items:center;padding-bottom:64px}
.hero-eyebrow{display:inline-flex;align-items:center;gap:8px;font-size:13px;font-weight:600;color:var(--brand-500);background:rgba(242,121,11,.12);border:1px solid rgba(242,121,11,.34);border-radius:6px;padding:5px 12px;margin-bottom:20px}
.hero h1{color:#F7F5F1}
.hero-sub{margin:18px 0 0;font-size:17px;line-height:1.7;color:#C9CFD4;max-width:520px}
.hero-cta{margin-top:32px;display:flex;gap:14px;flex-wrap:wrap}
.hero-badges{margin:32px 0 0;padding:0;list-style:none;display:flex;gap:26px;flex-wrap:wrap;font-size:14px;color:#C9CFD4}
.hero-badges li{display:flex;align-items:center;gap:9px;margin:0}
.hero-badges li::before{content:"";width:8px;height:8px;border-radius:50%;background:var(--teal-600);box-shadow:0 0 0 4px rgba(15,158,142,.18);flex:none}
.hero-media{border-radius:var(--r-img);overflow:hidden;position:relative;box-shadow:0 24px 48px -24px rgba(0,0,0,.6)}
.hero-media img{width:100%;height:420px;object-fit:cover;filter:saturate(.86)}
.hero-media::after{content:"";position:absolute;inset:0;background:linear-gradient(180deg,rgba(23,27,32,0) 45%,rgba(23,27,32,.55) 100%);pointer-events:none}
.lane-line{height:2px;background-image:repeating-linear-gradient(90deg,var(--brand-600) 0 24px,transparent 24px 48px);opacity:.65}

/* ---------- quick entry ---------- */
.quick-grid{display:grid;grid-template-columns:repeat(4,1fr);gap:24px}
.quick-card{display:block;background:var(--card);border:1px solid var(--line);border-radius:var(--r-card);padding:24px;box-shadow:var(--sh1);transition:border-color .2s ease-out,transform .2s ease-out,box-shadow .2s ease-out}
.quick-card:hover{border-color:rgba(232,93,4,.4);transform:translateY(-2px);box-shadow:var(--sh2);color:var(--ink-600)}
.quick-icon{width:44px;height:44px;border-radius:12px;background:var(--brand-100);color:var(--brand-600);display:grid;place-items:center;margin-bottom:16px}
.quick-icon svg{width:22px;height:22px;stroke:currentColor;fill:none;stroke-width:1.8;stroke-linecap:round;stroke-linejoin:round}
.quick-card h3{font-size:18px;margin-bottom:8px}
.quick-card p{margin:0;font-size:14px;line-height:1.75;color:var(--ink-400)}

/* ---------- compare table ---------- */
.compare-wrap{background:var(--card);border:1px solid var(--line);border-radius:var(--r-card);overflow:hidden;box-shadow:var(--sh1)}
table.compare{width:100%;border-collapse:collapse;font-size:15px}
table.compare thead th{background:var(--night);color:#F7F5F1;font-weight:600;font-size:15px;padding:18px 18px;text-align:left;position:relative}
table.compare tbody th{text-align:left;font-weight:600;color:var(--ink-900);padding:16px 18px;border-top:1px solid var(--line);background:transparent}
table.compare tbody td{padding:16px 18px;border-top:1px solid var(--line);color:var(--ink-600)}
table.compare tbody tr:nth-child(even){background:#FBFAF8}
.compare th.is-rec, .compare td.is-rec{background:var(--brand-100);border-left:1.5px solid var(--brand-600);border-right:1.5px solid var(--brand-600)}
.rec-tag{display:inline-block;margin-left:8px;font-size:11px;font-weight:700;color:#fff;background:var(--brand-600);border-radius:5px;padding:1px 7px;vertical-align:2px}
.cell-yes{color:var(--teal-600);font-weight:700;font-family:var(--mono)}
.cell-no{color:var(--ink-400)}

/* ---------- tier cards ---------- */
.tier-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:24px;align-items:start}
.tier-card{background:var(--card);border:1px solid var(--line);border-radius:var(--r-card);padding:24px;box-shadow:var(--sh1);transition:border-color .2s ease-out,transform .2s ease-out,box-shadow .2s ease-out}
.tier-card:hover{border-color:rgba(232,93,4,.4);box-shadow:var(--sh2);transform:translateY(-2px)}
.tier-card:nth-child(2){margin-top:24px}
.tier-card:nth-child(3){margin-top:48px}
.tier-no{font-family:var(--mono);font-size:13px;font-weight:700;letter-spacing:1px;color:var(--brand-600);background:var(--brand-100);border-radius:6px;padding:2px 9px;display:inline-block}
.tier-card h3{margin:16px 0 6px;font-size:20px}
.tier-price{font-size:13px;color:var(--ink-400);margin:0 0 18px}
.tier-list{list-style:none;margin:0;padding:0}
.tier-list li{position:relative;padding-left:22px;font-size:14px;line-height:1.8;margin-bottom:8px;color:var(--ink-600)}
.tier-list li::before{content:"";position:absolute;left:0;top:10px;width:10px;height:10px;border-radius:3px;border:1.5px solid var(--teal-600)}
.tier-note{margin:18px 0 0;padding-top:16px;border-top:1px dashed var(--line);font-size:13px;line-height:1.75;color:var(--ink-400)}

/* ---------- feature rows ---------- */
.feature-row{display:grid;grid-template-columns:1fr 1fr;gap:48px;align-items:center;margin-bottom:56px}
.feature-row:last-child{margin-bottom:0}
.feature-media{border-radius:var(--r-img);overflow:hidden;box-shadow:var(--sh1);border:1px solid var(--line)}
.feature-media img{width:100%;height:300px;object-fit:cover}
.feature-row.reverse .feature-media{order:2}
.feature-body h3{margin:14px 0 12px;font-size:24px}
.feature-body p{font-size:15px;line-height:1.85;color:var(--ink-600);margin-bottom:18px}

/* ---------- news cards ---------- */
.news-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:24px}
.news-card{display:flex;flex-direction:column;background:var(--card);border:1px solid var(--line);border-radius:var(--r-card);overflow:hidden;box-shadow:var(--sh1);transition:border-color .2s ease-out,transform .2s ease-out,box-shadow .2s ease-out;color:var(--ink-600)}
.news-card:hover{border-color:rgba(232,93,4,.4);transform:translateY(-2px);box-shadow:var(--sh2);color:var(--ink-600)}
.news-cover{aspect-ratio:16/9;overflow:hidden;background:var(--line-soft)}
.news-cover img{width:100%;height:100%;object-fit:cover;transition:transform .3s ease-out}
.news-card:hover .news-cover img{transform:scale(1.04)}
.news-body{padding:20px 24px 24px;display:flex;flex-direction:column;flex:1}
.news-body h3{margin:12px 0 10px;font-size:18px;line-height:1.5;display:-webkit-box;-webkit-line-clamp:2;-webkit-box-orient:vertical;overflow:hidden}
.news-body p{margin:0 0 16px;font-size:14px;line-height:1.75;color:var(--ink-400);display:-webkit-box;-webkit-line-clamp:2;-webkit-box-orient:vertical;overflow:hidden}
.news-meta{margin-top:auto;padding-top:14px;border-top:1px solid var(--line-soft);display:flex;align-items:center;justify-content:space-between;font-size:13px;color:var(--ink-400)}
.news-arrow{color:var(--brand-600);font-weight:600}
.empty-state{border:1px dashed var(--line);border-radius:var(--r-card);min-height:160px;display:flex;flex-direction:column;align-items:center;justify-content:center;gap:10px;background:#FBFAF8;color:var(--ink-400);text-align:center;padding:32px}
.empty-state svg{width:32px;height:32px;stroke:var(--ink-400);fill:none;stroke-width:1.6;stroke-linecap:round;stroke-linejoin:round}
.empty-state p{margin:0;font-size:15px}
.empty-state a{font-size:14px;font-weight:600;color:var(--brand-600);border-bottom:1px solid var(--brand-600)}

/* ---------- faq ---------- */
.faq{max-width:800px;margin:0 auto}
.faq-item{background:var(--card);border:1px solid var(--line);border-radius:12px;margin-bottom:12px;overflow:hidden;transition:border-color .2s ease-out}
.faq-item:hover{border-color:#D8D2C7}
.faq-q{width:100%;display:flex;align-items:center;justify-content:space-between;gap:16px;padding:20px;font-size:17px;font-weight:600;color:var(--ink-900);background:none;border:0;text-align:left;cursor:pointer;line-height:1.6;transition:color .18s ease-out}
.faq-q:hover{color:var(--brand-600)}
.faq-icon{width:18px;height:18px;flex:none;position:relative}
.faq-icon::before,.faq-icon::after{content:"";position:absolute;background:var(--brand-600);border-radius:2px;transition:transform .22s ease-out}
.faq-icon::before{left:0;top:8px;width:18px;height:2px}
.faq-icon::after{left:8px;top:0;width:2px;height:18px}
.faq-item.is-open .faq-icon::after{transform:scaleY(0)}
.faq-a{max-height:0;overflow:hidden;transition:max-height .22s ease-out}
.faq-a-inner{padding:0 20px 20px;font-size:15px;line-height:1.9;color:var(--ink-600)}
.faq-a-inner p:last-child{margin-bottom:0}
.faq-item.is-open .faq-a{max-height:520px}

/* ---------- cta band ---------- */
.cta-band{background:var(--night);color:#C9CFD4;position:relative;overflow:hidden;padding:72px 0}
.cta-band::before{content:"";position:absolute;top:0;left:0;right:0;height:4px;background:repeating-linear-gradient(45deg,var(--brand-500) 0 8px,rgba(242,121,11,.16) 8px 16px)}
.cta-inner{display:flex;align-items:center;justify-content:space-between;gap:40px;flex-wrap:wrap}
.cta-band h2{font-size:28px;color:#F7F5F1;font-weight:700}
.cta-band p{margin:12px 0 0;font-size:15px;color:#C9CFD4;max-width:560px}
.cta-actions{display:flex;gap:14px;flex-wrap:wrap}

/* ---------- footer ---------- */
.site-footer{background:var(--night);color:#C9CFD4;position:relative;padding:64px 0 0}
.site-footer::before{content:"";position:absolute;top:0;left:0;right:0;height:4px;background:repeating-linear-gradient(45deg,var(--brand-500) 0 8px,rgba(242,121,11,.16) 8px 16px)}
.footer-grid{display:grid;grid-template-columns:1.5fr 1fr 1fr 1.1fr;gap:32px}
.footer-brand .logo-text strong{color:#F7F5F1}
.footer-brand .logo-text em{color:#8A9199}
.footer-brand p{margin:18px 0 0;font-size:14px;line-height:1.8;color:#8A9199;max-width:320px}
.footer-col h4{color:#F7F5F1;font-size:15px;font-weight:600;margin:0 0 16px}
.footer-links{list-style:none;margin:0;padding:0}
.footer-links li{margin-bottom:10px}
.footer-links a{font-size:14px;color:#C9CFD4}
.footer-links a:hover{color:var(--brand-500)}
.footer-note{font-size:14px;line-height:1.9;color:#8A9199}
.footer-bottom{margin-top:48px;border-top:1px solid rgba(247,245,241,.12);padding:22px 0 30px;display:flex;justify-content:space-between;gap:16px;flex-wrap:wrap;font-size:13px;color:#8A9199}
.footer-bottom a{color:#8A9199}
.footer-bottom a:hover{color:var(--brand-500)}

/* ---------- mobile tab ---------- */
.mobile-tab{display:none;position:fixed;left:0;right:0;bottom:0;z-index:95;background:rgba(255,255,255,.97);backdrop-filter:blur(10px);-webkit-backdrop-filter:blur(10px);border-top:1px solid var(--line);padding-bottom:env(safe-area-inset-bottom)}
.mobile-tab-inner{display:grid;grid-template-columns:repeat(5,1fr);height:56px}
.mobile-tab a{display:flex;flex-direction:column;align-items:center;justify-content:center;gap:3px;font-size:10px;font-weight:500;color:var(--ink-400)}
.mobile-tab a svg{width:22px;height:22px;stroke:currentColor;fill:none;stroke-width:1.7;stroke-linecap:round;stroke-linejoin:round}
.mobile-tab a.is-active{color:var(--brand-600);font-weight:600}

/* ---------- to top ---------- */
.to-top{position:fixed;right:20px;bottom:24px;z-index:80;width:44px;height:44px;border-radius:50%;background:#fff;border:1px solid var(--line);box-shadow:var(--sh2);display:none;align-items:center;justify-content:center;cursor:pointer;padding:0}
.to-top.show{display:flex}
.to-top svg{width:18px;height:18px;stroke:var(--ink-600);fill:none;stroke-width:2;stroke-linecap:round;stroke-linejoin:round}

/* ---------- responsive ---------- */
@media (max-width:1279px){
  h1{font-size:38px}
}
@media (max-width:1023px){
  .main-nav{display:none}
  .nav-actions .btn,.nav-actions .link-ghost{display:none}
  .nav-burger{display:inline-flex}
  .nav-inner{min-height:64px;gap:12px}
  .hero-grid{grid-template-columns:1fr;gap:36px;padding-bottom:48px}
  .hero-media img{height:320px}
  .quick-grid{grid-template-columns:repeat(2,1fr)}
  .tier-grid{grid-template-columns:1fr;gap:16px}
  .tier-card:nth-child(2),.tier-card:nth-child(3){margin-top:0}
  .feature-row{grid-template-columns:1fr;gap:24px;margin-bottom:40px}
  .feature-row.reverse .feature-media{order:0}
  .feature-media img{height:240px}
  .news-grid{grid-template-columns:repeat(2,1fr)}
  .footer-grid{grid-template-columns:1fr 1fr}
  .section{padding:72px 0}
  .sec-title{font-size:26px}
  .mobile-tab{display:block}
  body{padding-bottom:56px}
  .to-top{bottom:76px}
}
@media (max-width:767px){
  .container{padding:0 16px}
  h1{font-size:28px}
  .section{padding:48px 0}
  .sec-title{font-size:22px}
  .sec-head{margin-bottom:28px}
  .hero{padding-top:40px}
  .hero-grid{padding-bottom:36px}
  .hero-sub{font-size:15px}
  .hero-media img{height:240px}
  .hero-cta .btn{flex:1 1 100%}
  .quick-grid{grid-template-columns:1fr;gap:16px}
  .news-grid{grid-template-columns:1fr}
  .footer-grid{grid-template-columns:1fr;gap:8px}
  .footer-col h4{display:flex;justify-content:space-between;align-items:center;padding:16px 0;margin:0;border-bottom:1px solid rgba(247,245,241,.12)}
  .footer-links{padding:12px 0 4px}
  .cta-inner{gap:24px}
  .cta-band h2{font-size:22px}
  .cta-actions{width:100%}
  .cta-actions .btn{flex:1 1 100%}
  .feature-body h3{font-size:19px}
  /* table -> cards */
  .compare-wrap{background:transparent;border:0;box-shadow:none;border-radius:0}
  table.compare thead{display:none}
  table.compare,table.compare tbody{display:block;width:100%}
  table.compare tbody tr{display:block;background:#fff;border:1px solid var(--line);border-radius:12px;margin:0 0 12px;padding:6px 16px}
  table.compare tbody th,table.compare tbody td{display:flex;justify-content:space-between;align-items:center;gap:16px;padding:11px 0;border:0;border-top:1px dashed var(--line-soft);text-align:right;font-size:14px;background:transparent}
  table.compare tbody tr>:first-child{border-top:0;justify-content:flex-start;font-size:15px;color:var(--ink-900);font-weight:700}
  table.compare tbody td::before{content:attr(data-label);font-size:12px;font-weight:500;color:var(--ink-400);flex:none}
  table.compare .is-rec{background:transparent !important;border-left:0;border-right:0}
}
@media (prefers-reduced-motion:reduce){
  *{animation:none !important;transition:none !important;scroll-behavior:auto !important}
}

/* roulang page: article */
:root{
  --brand-600:#E85D04;
  --brand-500:#F2790B;
  --brand-700:#C94E02;
  --brand-100:#FDEBD9;
  --teal-600:#0F9E8E;
  --teal-100:#DCF3EF;
  --night:#171B20;
  --ink-900:#14181C;
  --ink-600:#4A545C;
  --ink-400:#7C868E;
  --line:#E4E0D8;
  --paper:#F7F5F1;
  --card:#FFFFFF;
  --danger:#C0392B;
  --row-alt:#FBFAF8;
  --mono:ui-monospace,SFMono-Regular,Menlo,Consolas,"Liberation Mono",monospace;
  --radius-card:14px;
  --radius-btn:10px;
  --radius-badge:6px;
  --radius-img:12px;
  --shadow-1:0 1px 2px rgba(20,24,28,.06);
  --shadow-2:0 10px 28px -14px rgba(20,24,28,.20);
  --ease:cubic-bezier(.22,.61,.36,1);
}
*,*::before,*::after{box-sizing:border-box}
html{-webkit-text-size-adjust:100%;scroll-behavior:smooth}
body{
  margin:0;
  background:var(--paper);
  color:var(--ink-600);
  font-family:-apple-system,"PingFang SC","HarmonyOS Sans SC","Microsoft YaHei","Noto Sans SC",sans-serif;
  font-size:16px;
  line-height:1.85;
  -webkit-font-smoothing:antialiased;
}
img{max-width:100%;display:block}
svg{display:block}
button,input,select,textarea{font:inherit;color:inherit}
h1,h2,h3,h4{color:var(--ink-900);margin:0;letter-spacing:0}
p{margin:0}
ul,ol{margin:0;padding:0}
a{color:inherit;text-decoration:none}
:focus-visible{outline:2px solid var(--teal-600);outline-offset:2px;border-radius:4px}
.container{width:100%;max-width:1200px;margin:0 auto;padding:0 24px}
.section{padding:88px 0}
.section-tight{padding:64px 0}
.h2{position:relative;font-size:30px;font-weight:700;line-height:1.35;padding-top:16px}
.h2::before{content:"";position:absolute;top:0;left:0;width:32px;height:3px;border-radius:2px;background:var(--brand-500)}
.lead{font-size:16px;color:var(--ink-600);line-height:1.85}
.muted{color:var(--ink-400);font-size:14px;line-height:1.7}

/* ---------- 按钮 ---------- */
.btn{
  display:inline-flex;align-items:center;justify-content:center;gap:8px;
  height:48px;padding:0 24px;border-radius:var(--radius-btn);
  font-size:15px;font-weight:600;border:1px solid transparent;cursor:pointer;
  transition:background-color .18s var(--ease),color .18s var(--ease),border-color .18s var(--ease),transform .18s var(--ease),box-shadow .18s var(--ease);
  white-space:nowrap;
}
.btn-primary{background:var(--brand-600);color:#fff;box-shadow:var(--shadow-1)}
.btn-primary:hover{background:var(--brand-700);color:#fff;transform:translateY(-1px);box-shadow:var(--shadow-2)}
.btn-primary:active{transform:none;background:var(--brand-700);box-shadow:none}
.btn-ghost{background:#fff;color:var(--ink-900);border:1.5px solid var(--ink-900)}
.btn-ghost:hover{color:var(--brand-600);border-color:var(--brand-600);transform:translateY(-1px)}
.btn-ghost:active{transform:none}
.btn-line{background:transparent;color:var(--brand-600);border-bottom:2px solid var(--brand-500);border-radius:0;height:auto;padding:6px 0}
.btn-line:hover{border-bottom-color:var(--brand-700);color:var(--brand-700)}
.btn-sm{height:40px;padding:0 18px;font-size:14px}
.btn-lg{height:52px;padding:0 28px;font-size:16px}
.btn[disabled]{background:#D9D5CE;color:#8A9199;box-shadow:none;cursor:not-allowed}

/* ---------- 徽章 ---------- */
.badge{
  display:inline-flex;align-items:center;gap:6px;height:26px;padding:0 10px;
  border-radius:var(--radius-badge);font-size:12px;font-weight:600;line-height:1;border:1px solid transparent;
}
.badge-amber{background:var(--brand-100);color:var(--brand-700);border-color:rgba(232,93,4,.28)}
.badge-teal{background:var(--teal-100);color:var(--teal-600);border-color:rgba(15,158,142,.28)}
.badge-plain{background:#fff;color:var(--ink-600);border-color:var(--line)}

/* ---------- 顶部导航 ---------- */
.site-header{position:sticky;top:0;z-index:80;background:var(--paper);border-bottom:1px solid transparent;transition:border-color .2s var(--ease),box-shadow .2s var(--ease)}
.site-header.is-scrolled{border-bottom-color:var(--line);box-shadow:var(--shadow-1)}
.header-inner{display:flex;align-items:center;gap:20px;min-height:72px}
.site-header.is-scrolled .header-inner{min-height:60px}
.brand{display:flex;align-items:center;gap:10px}
.logo-mark{width:38px;height:38px;border-radius:8px;background:var(--brand-500);display:flex;align-items:center;justify-content:center;box-shadow:var(--shadow-1);flex:0 0 auto}
.logo-mark svg{width:22px;height:22px;fill:none;stroke:#fff;stroke-width:1.8;stroke-linecap:round;stroke-linejoin:round}
.logo-text{display:flex;flex-direction:column;line-height:1.2}
.logo-text strong{font-size:17px;font-weight:800;color:var(--ink-900)}
.logo-text em{font-style:normal;font-size:11px;letter-spacing:.14em;color:var(--ink-400);font-family:var(--mono)}
.main-nav{display:flex;align-items:center;gap:4px;margin-left:auto}
.main-nav a{position:relative;display:inline-flex;align-items:center;height:72px;padding:0 14px;font-size:15px;font-weight:600;color:var(--ink-600);transition:color .18s var(--ease)}
.site-header.is-scrolled .main-nav a{height:60px}
.main-nav a::after{content:"";position:absolute;left:14px;right:14px;bottom:12px;height:2px;border-radius:2px;background:var(--brand-500);transform:scaleX(0);transform-origin:left;transition:transform .18s var(--ease)}
.main-nav a:hover{color:var(--brand-600)}
.main-nav a:hover::after,.main-nav a.is-active::after{transform:scaleX(1)}
.main-nav a.is-active{color:var(--ink-900)}
.header-actions{display:flex;align-items:center;gap:16px}
.header-link{font-size:14px;font-weight:600;color:var(--ink-600);border-bottom:1px solid var(--line);padding-bottom:2px;transition:color .18s var(--ease),border-color .18s var(--ease)}
.header-link:hover{color:var(--brand-600);border-bottom-color:var(--brand-600)}
.menu-toggle{display:none;width:44px;height:44px;border:1px solid var(--line);border-radius:var(--radius-btn);background:#fff;cursor:pointer;padding:0;align-items:center;justify-content:center;flex-direction:column;gap:4px}
.menu-toggle span{display:block;width:18px;height:2px;border-radius:2px;background:var(--ink-900);transition:transform .18s var(--ease),opacity .18s var(--ease)}
.mobile-drawer{display:none;border-top:1px solid var(--line);background:#fff;padding:12px 0 20px}
.mobile-drawer.is-open{display:block}
.mobile-drawer a{display:block;padding:13px 0;font-size:16px;font-weight:600;color:var(--ink-900);border-bottom:1px solid var(--line)}
.mobile-drawer a:last-of-type{border-bottom:0}
.mobile-drawer .btn{width:100%;margin-top:14px}

/* ---------- 面包屑 ---------- */
.breadcrumb{padding:20px 0 0}
.breadcrumb ol{list-style:none;display:flex;flex-wrap:wrap;align-items:center;gap:8px;font-size:13px;color:var(--ink-400)}
.breadcrumb li{display:flex;align-items:center;gap:8px}
.breadcrumb li+li::before{content:"/";color:var(--line);font-size:13px}
.breadcrumb a{color:var(--ink-400);transition:color .18s var(--ease)}
.breadcrumb a:hover{color:var(--brand-600)}
.breadcrumb .current{max-width:280px;overflow:hidden;text-overflow:ellipsis;white-space:nowrap;color:var(--ink-600)}

/* ---------- 文章头 ---------- */
.article-head{padding:28px 0 32px;border-bottom:1px dashed var(--line)}
.article-head h1{font-size:42px;font-weight:800;line-height:1.22;margin:14px 0 16px;max-width:900px}
.article-meta{display:flex;flex-wrap:wrap;align-items:center;gap:10px;font-size:13px;color:var(--ink-400)}
.article-meta .dot{width:3px;height:3px;border-radius:50%;background:var(--line)}
.article-meta time{font-family:var(--mono);letter-spacing:.02em}

/* ---------- 布局 ---------- */
.article-layout{display:grid;grid-template-columns:minmax(0,760px) 300px;gap:56px;align-items:start;padding:48px 0 0}
.article-body{font-size:16px;line-height:1.85;color:var(--ink-600);overflow-wrap:break-word}
.article-body>*+*{margin-top:1.2em}
.article-body h1,.article-body h2,.article-body h3,.article-body h4{color:var(--ink-900)}
.article-body h2{position:relative;font-size:26px;font-weight:700;line-height:1.4;padding-left:16px;margin-top:2em}
.article-body h2::before{content:"";position:absolute;left:0;top:.28em;bottom:.28em;width:3px;border-radius:2px;background:var(--brand-500)}
.article-body h3{font-size:20px;font-weight:600;line-height:1.5;margin-top:1.7em}
.article-body h4{font-size:17px;font-weight:600;margin-top:1.4em}
.article-body ul,.article-body ol{padding-left:1.35em}
.article-body li{margin:.4em 0;line-height:1.9}
.article-body ul li::marker{color:var(--brand-500)}
.article-body ol li::marker{color:var(--brand-600);font-family:var(--mono);font-weight:600}
.article-body blockquote{
  margin:1.6em 0;padding:18px 22px;background:var(--teal-100);
  border-left:3px solid var(--teal-600);border-radius:0 var(--radius-badge) var(--radius-badge) 0;
  color:#0d6f64;font-size:15.5px;line-height:1.9;
}
.article-body blockquote p{margin:0}
.article-body img{border-radius:var(--radius-img);margin:1.6em auto;width:100%;object-fit:cover}
.article-body figure{margin:1.6em 0}
.article-body figcaption{font-size:13px;color:var(--ink-400);text-align:center;margin-top:10px}
.article-body a{color:var(--ink-600);border-bottom:1px solid var(--brand-500);transition:color .18s var(--ease)}
.article-body a:hover{color:var(--brand-600)}
.article-body table{width:100%;border-collapse:collapse;font-size:14.5px;margin:1.6em 0;border:1px solid var(--line);border-radius:var(--radius-card);overflow:hidden}
.article-body thead th{background:var(--night);color:#F7F5F1;font-weight:600;text-align:left;padding:12px 14px;font-size:13.5px;white-space:nowrap}
.article-body tbody td{padding:12px 14px;border-top:1px solid var(--line);color:var(--ink-600)}
.article-body tbody tr:nth-child(even) td{background:var(--row-alt)}
.article-body code{font-family:var(--mono);font-size:14px;background:#EFECE6;border-radius:6px;padding:2px 6px;color:var(--brand-700)}
.article-body hr{border:0;border-top:1px dashed var(--line);margin:2em 0}

/* ---------- 文章底部标签与翻页 ---------- */
.article-tags{display:flex;flex-wrap:wrap;align-items:center;gap:10px;margin-top:48px;padding-top:24px;border-top:1px dashed var(--line)}
.article-tags .tag-label{font-size:13px;color:var(--ink-400);font-family:var(--mono);letter-spacing:.08em}
.article-tags a{display:inline-flex;align-items:center;height:28px;padding:0 12px;font-size:13px;font-weight:600;border-radius:var(--radius-badge);background:var(--brand-100);color:var(--brand-700);border:1px solid rgba(232,93,4,.28);transition:transform .18s var(--ease),background-color .18s var(--ease)}
.article-tags a:hover{transform:translateY(-1px);background:#FBDCC1}
.back-cat{margin-top:20px}
.pager{display:grid;grid-template-columns:1fr 1fr;gap:20px;margin-top:32px}
.pager-card{display:block;background:var(--card);border:1px solid var(--line);border-radius:var(--radius-card);padding:20px 22px;box-shadow:var(--shadow-1);transition:border-color .18s var(--ease),transform .18s var(--ease),box-shadow .18s var(--ease)}
.pager-card:hover{border-color:rgba(232,93,4,.4);transform:translateY(-2px);box-shadow:var(--shadow-2)}
.pager-card .k{font-size:12px;font-family:var(--mono);color:var(--ink-400);letter-spacing:.08em;display:block;margin-bottom:8px}
.pager-card .t{font-size:15.5px;font-weight:600;color:var(--ink-900);line-height:1.6;display:-webkit-box;-webkit-line-clamp:2;-webkit-box-orient:vertical;overflow:hidden}
.pager-card.next{text-align:right}

/* ---------- 空态 ---------- */
.empty-state{
  border:1px dashed var(--line);border-radius:var(--radius-card);min-height:180px;
  display:flex;flex-direction:column;align-items:center;justify-content:center;gap:12px;
  padding:32px 24px;background:#fff;text-align:center;
}
.empty-state svg{width:34px;height:34px;stroke:var(--ink-400);fill:none;stroke-width:1.6;stroke-linecap:round;stroke-linejoin:round}
.empty-state p{font-size:15px;color:var(--ink-600)}
.empty-state a{color:var(--brand-600);font-weight:600;border-bottom:1px solid var(--brand-500);padding-bottom:2px}

/* ---------- 侧栏 ---------- */
.sidebar{display:flex;flex-direction:column;gap:24px;position:sticky;top:88px}
.side-card{background:var(--card);border:1px solid var(--line);border-radius:var(--radius-card);padding:22px;box-shadow:var(--shadow-1)}
.side-card h3{font-size:16px;font-weight:700;color:var(--ink-900);margin-bottom:14px;display:flex;align-items:center;gap:8px}
.side-card h3::before{content:"";width:3px;height:14px;border-radius:2px;background:var(--brand-500)}
.side-list{list-style:none;display:flex;flex-direction:column;gap:12px}
.side-list a{display:flex;gap:10px;font-size:14px;line-height:1.7;color:var(--ink-600);transition:color .18s var(--ease)}
.side-list a:hover{color:var(--brand-600)}
.side-list .no{font-family:var(--mono);color:var(--brand-500);font-size:13px;font-weight:600;flex:0 0 auto}
.side-cta{background:var(--night);border-color:var(--night);color:#C9CFD4}
.side-cta h3{color:#F7F5F1}
.side-cta p{font-size:14px;line-height:1.8;margin-bottom:16px}
.side-cta .btn{width:100%}

/* ---------- 推荐卡片 ---------- */
.rec-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:24px;margin-top:32px}
.card{
  display:flex;flex-direction:column;background:var(--card);border:1px solid var(--line);
  border-radius:var(--radius-card);overflow:hidden;box-shadow:var(--shadow-1);
  transition:border-color .18s var(--ease),transform .18s var(--ease),box-shadow .18s var(--ease);
}
.card:hover{border-color:rgba(232,93,4,.4);transform:translateY(-2px);box-shadow:var(--shadow-2)}
.card-media{position:relative;aspect-ratio:16/9;overflow:hidden;background:#EFECE6}
.card-media img{width:100%;height:100%;object-fit:cover;transition:transform .35s var(--ease)}
.card:hover .card-media img{transform:scale(1.03)}
.card-media .badge{position:absolute;left:12px;top:12px;background:#fff}
.card-body{padding:20px 22px 22px;display:flex;flex-direction:column;gap:10px;flex:1}
.card-body h3{font-size:18px;font-weight:600;line-height:1.5;color:var(--ink-900);display:-webkit-box;-webkit-line-clamp:2;-webkit-box-orient:vertical;overflow:hidden}
.card-body p{font-size:14px;line-height:1.75;color:var(--ink-600);display:-webkit-box;-webkit-line-clamp:2;-webkit-box-orient:vertical;overflow:hidden}
.card-foot{display:flex;align-items:center;justify-content:space-between;margin-top:auto;padding-top:8px;font-size:13px;color:var(--ink-400)}
.card-foot .arrow{color:var(--brand-600);font-weight:600;transition:transform .18s var(--ease)}
.card:hover .card-foot .arrow{transform:translateX(3px)}

/* ---------- CTA 带 ---------- */
.cta-band{position:relative;background:var(--night);color:#F7F5F1;padding:72px 0;overflow:hidden}
.cta-band::before{content:"";position:absolute;inset:0;background:repeating-linear-gradient(115deg,rgba(247,245,241,.09) 0 10px,transparent 10px 28px);pointer-events:none}
.cta-band::after{content:"";position:absolute;left:0;right:0;top:0;height:2px;background:repeating-linear-gradient(90deg,var(--brand-500) 0 18px,transparent 18px 36px)}
.cta-band .container{position:relative;z-index:1;display:flex;flex-wrap:wrap;align-items:center;gap:32px;justify-content:space-between}
.cta-band h2{font-size:30px;font-weight:700;color:#F7F5F1;line-height:1.35;margin-bottom:12px}
.cta-band p{color:#C9CFD4;font-size:15px;max-width:640px}
.cta-actions{display:flex;flex-wrap:wrap;gap:14px}
.cta-band .btn-ghost{background:transparent;color:#F7F5F1;border-color:rgba(247,245,241,.45)}
.cta-band .btn-ghost:hover{color:var(--brand-500);border-color:var(--brand-500)}

/* ---------- 页脚 ---------- */
.site-footer{position:relative;background:var(--night);color:#C9CFD4;padding-top:0;margin-top:0}
.site-footer::before{content:"";display:block;height:4px;background:repeating-linear-gradient(115deg,var(--brand-600) 0 14px,var(--brand-500) 14px 28px,#F7F5F1 28px 32px)}
.footer-grid{display:grid;grid-template-columns:1.5fr 1fr 1fr 1.2fr;gap:40px;padding:64px 0 40px}
.footer-col h4{font-size:15px;font-weight:700;color:#F7F5F1;margin-bottom:16px}
.footer-brand p{font-size:14px;line-height:1.85;color:#C9CFD4;margin-top:16px;max-width:320px}
.footer-brand .logo-text strong{color:#F7F5F1}
.footer-brand .logo-text em{color:#8B949B}
.footer-links{list-style:none;display:flex;flex-direction:column;gap:12px}
.footer-links a{font-size:14px;color:#C9CFD4;transition:color .18s var(--ease)}
.footer-links a:hover{color:var(--brand-500)}
.footer-note{font-size:14px;line-height:2;color:#C9CFD4}
.footer-bottom{display:flex;flex-wrap:wrap;gap:12px;justify-content:space-between;border-top:1px solid rgba(247,245,241,.12);padding:20px 0 28px;font-size:13px;color:#8B949B}

/* ---------- 移动端底部 Tab ---------- */
.mobile-tabbar{display:none;position:fixed;left:0;right:0;bottom:0;z-index:90;background:#fff;border-top:1px solid var(--line);padding-bottom:env(safe-area-inset-bottom);box-shadow:0 -4px 18px -12px rgba(20,24,28,.3)}
.mobile-tabbar .tab-inner{display:grid;grid-template-columns:repeat(5,1fr)}
.tab-item{display:flex;flex-direction:column;align-items:center;justify-content:center;gap:3px;height:56px;font-size:10px;font-weight:600;color:var(--ink-400);transition:color .18s var(--ease)}
.tab-item svg{width:22px;height:22px;fill:none;stroke:currentColor;stroke-width:1.7;stroke-linecap:round;stroke-linejoin:round}
.tab-item.is-active{color:var(--brand-600)}

/* ---------- 返回顶部 ---------- */
.back-top{position:fixed;right:24px;bottom:32px;width:44px;height:44px;border-radius:50%;background:#fff;border:1px solid var(--line);box-shadow:var(--shadow-2);display:flex;align-items:center;justify-content:center;cursor:pointer;opacity:0;visibility:hidden;transform:translateY(8px);transition:opacity .2s var(--ease),transform .2s var(--ease),visibility .2s}
.back-top.is-visible{opacity:1;visibility:visible;transform:none}
.back-top svg{width:18px;height:18px;stroke:var(--ink-900);fill:none;stroke-width:2;stroke-linecap:round;stroke-linejoin:round}
.back-top:hover{border-color:var(--brand-600)}

/* ---------- 响应式 ---------- */
@media (max-width:1279px){
  .article-layout{grid-template-columns:minmax(0,1fr) 280px;gap:40px}
}
@media (max-width:1023px){
  .section{padding:72px 0}
  .main-nav,.header-actions{display:none}
  .menu-toggle{display:flex;margin-left:auto}
  .article-layout{grid-template-columns:minmax(0,1fr);gap:40px}
  .sidebar{position:static}
  .article-head h1{font-size:34px}
  .rec-grid{grid-template-columns:repeat(2,1fr)}
  .footer-grid{grid-template-columns:1fr 1fr;gap:32px}
}
@media (max-width:767px){
  .container{padding:0 16px}
  .section{padding:48px 0}
  .h2{font-size:22px}
  .article-head{padding:20px 0 24px}
  .article-head h1{font-size:28px;margin:12px 0 14px}
  .article-layout{padding-top:32px;gap:32px}
  .article-body h2{font-size:22px}
  .article-body h3{font-size:18px}
  .article-body table{display:block;overflow-x:auto;white-space:nowrap}
  .pager{grid-template-columns:1fr}
  .pager-card.next{text-align:left}
  .rec-grid{grid-template-columns:1fr}
  .cta-band{padding:52px 0}
  .cta-band h2{font-size:22px}
  .cta-band .container{flex-direction:column;align-items:flex-start;gap:24px}
  .cta-actions{width:100%}
  .cta-actions .btn{flex:1}
  .footer-grid{grid-template-columns:1fr;gap:0;padding:32px 0 24px}
  .footer-col{border-bottom:1px solid rgba(247,245,241,.12);padding:16px 0}
  .footer-col:last-child{border-bottom:0}
  .footer-brand p{margin-top:12px}
  .footer-bottom{flex-direction:column;gap:6px;padding-bottom:88px}
  .mobile-tabbar{display:block}
  .back-top{bottom:76px;right:16px}
  .breadcrumb .current{max-width:160px}
}
@media (prefers-reduced-motion:reduce){
  *,*::before,*::after{transition:none!important;animation:none!important;scroll-behavior:auto!important}
}

/* roulang page: category1 */
/* ============ 设计变量 ============ */
:root{
  --brand-600:#E85D04;
  --brand-700:#C94E02;
  --brand-500:#F2790B;
  --brand-100:#FDEBD9;
  --teal-600:#0F9E8E;
  --teal-100:#DCF3EF;
  --night:#171B20;
  --ink-900:#14181C;
  --ink-600:#4A545C;
  --ink-400:#7C868E;
  --line:#E4E0D8;
  --paper:#F7F5F1;
  --card:#FFFFFF;
  --err:#C0392B;
  --on-night:#F7F5F1;
  --on-night-2:#C9CFD4;
  --r-card:14px;
  --r-btn:10px;
  --r-badge:6px;
  --r-input:10px;
  --r-img:12px;
  --shadow-1:0 1px 2px rgba(20,24,28,.06);
  --shadow-2:0 10px 28px -14px rgba(20,24,28,.20);
  --container:1200px;
  --ease:cubic-bezier(.22,.61,.36,1);
}

/* ============ 基础 reset ============ */
*,*::before,*::after{box-sizing:border-box}
html{-webkit-text-size-adjust:100%;scroll-behavior:smooth}
body{
  margin:0;
  background:var(--paper);
  color:var(--ink-600);
  font-family:-apple-system,"PingFang SC","HarmonyOS Sans SC","Microsoft YaHei","Noto Sans SC",sans-serif;
  font-size:16px;
  line-height:1.85;
  -webkit-font-smoothing:antialiased;
}
body.drawer-open{overflow:hidden}
img{max-width:100%;display:block;object-fit:cover;border-radius:var(--r-img)}
a{color:var(--ink-600);text-decoration:none;border-bottom:1px solid transparent;transition:color .18s var(--ease),border-color .18s var(--ease)}
a:hover{color:var(--brand-600);border-bottom-color:var(--brand-600)}
button{font:inherit;color:inherit}
h1,h2,h3,h4{margin:0;color:var(--ink-900);letter-spacing:0}
h1{font-size:42px;line-height:1.22;font-weight:800}
h2{font-size:30px;line-height:1.32;font-weight:700}
h2::before{content:"";display:block;width:32px;height:3px;border-radius:2px;background:var(--brand-600);margin-bottom:12px}
h3{font-size:22px;line-height:1.4;font-weight:600}
h4{font-size:18px;line-height:1.45;font-weight:600}
p{margin:0 0 1.2em}
p:last-child{margin-bottom:0}
ul,ol{margin:0;padding:0;list-style:none}
:focus-visible{outline:2px solid var(--teal-600);outline-offset:2px;border-radius:4px}
.skip-link{position:absolute;left:-9999px;top:0;background:#fff;padding:10px 18px;border-radius:0 0 10px 0;z-index:200}
.skip-link:focus{left:0}

/* ============ 容器与板块 ============ */
.container{width:100%;max-width:var(--container);margin:0 auto;padding:0 24px}
.section{padding:88px 0}
.section-alt{background:#FFFFFF}
.section-head{max-width:760px;margin-bottom:36px}
.section-head h2{margin-bottom:12px}
.section-sub{font-size:15px;line-height:1.8;color:var(--ink-400);margin:0}
.lead{font-size:17px;line-height:1.9}

/* ============ 顶部导航 ============ */
.site-header{position:sticky;top:0;z-index:60;background:#FFFDFA;border-bottom:1px solid var(--line);transition:box-shadow .2s var(--ease)}
.site-header.is-scrolled{box-shadow:var(--shadow-1)}
.header-inner{display:flex;align-items:center;gap:28px;height:72px;transition:height .2s var(--ease)}
.site-header.is-scrolled .header-inner{height:60px}
.logo{display:inline-flex;align-items:center;gap:10px;border-bottom:0}
.logo-mark{width:34px;height:34px;border-radius:8px;background:var(--brand-600);color:#fff;display:grid;place-items:center;flex:0 0 auto}
.logo-mark svg{width:20px;height:20px;fill:none;stroke:currentColor;stroke-width:1.7;stroke-linecap:round;stroke-linejoin:round}
.logo-text{display:flex;flex-direction:column;line-height:1.15}
.logo-text strong{font-size:16px;font-weight:800;color:var(--ink-900)}
.logo-text em{font-style:normal;font-size:11px;letter-spacing:.12em;color:var(--ink-400)}
.main-nav{display:flex;align-items:center;gap:26px;margin-left:8px}
.main-nav a{position:relative;font-size:15px;font-weight:500;padding:6px 0;border-bottom:0}
.main-nav a::after{content:"";position:absolute;left:0;right:0;bottom:-2px;height:2px;border-radius:2px;background:var(--brand-600);transform:scaleX(0);transform-origin:left;transition:transform .18s var(--ease)}
.main-nav a:hover::after{transform:scaleX(1)}
.main-nav a.is-active{color:var(--brand-600)}
.main-nav a.is-active::after{transform:scaleX(1)}
.header-actions{margin-left:auto;display:flex;align-items:center;gap:18px}
.link-quiet{font-size:15px;font-weight:500;border-bottom:0}
.nav-toggle{display:none;width:42px;height:42px;border:1px solid var(--line);border-radius:10px;background:#fff;cursor:pointer;padding:0;place-items:center}
.nav-toggle span{display:block;width:18px;height:2px;background:var(--ink-900);border-radius:2px;margin:3px auto;transition:transform .18s var(--ease),opacity .18s var(--ease)}
.nav-toggle[aria-expanded="true"] span:nth-child(1){transform:translateY(5px) rotate(45deg)}
.nav-toggle[aria-expanded="true"] span:nth-child(2){opacity:0}
.nav-toggle[aria-expanded="true"] span:nth-child(3){transform:translateY(-5px) rotate(-45deg)}

/* 移动抽屉 */
.drawer-mask{position:fixed;inset:0;background:rgba(20,24,28,.42);opacity:0;visibility:hidden;transition:opacity .2s var(--ease),visibility .2s;z-index:70}
.drawer-mask.is-open{opacity:1;visibility:visible}
.drawer{position:fixed;top:0;right:0;bottom:0;width:min(320px,86vw);background:#fff;border-left:1px solid var(--line);transform:translateX(102%);transition:transform .22s var(--ease);z-index:80;padding:24px;display:flex;flex-direction:column;gap:4px}
.drawer.is-open{transform:none}
.drawer a{padding:13px 2px;font-size:16px;font-weight:600;border-bottom:1px solid var(--line);border-radius:0}
.drawer .drawer-cta{margin-top:20px;border-bottom:0;padding:0}

/* ============ 按钮 ============ */
.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:600;border:1px solid transparent;cursor:pointer;text-align:center;transition:background .18s var(--ease),color .18s var(--ease),border-color .18s var(--ease),transform .18s var(--ease),box-shadow .18s var(--ease)}
.btn-sm{height:42px;padding:0 18px;font-size:14px}
.btn-lg{height:52px;padding:0 28px;font-size:16px}
.btn-primary{background:var(--brand-600);color:#fff;border-color:var(--brand-600);border-bottom:1px solid var(--brand-600)}
.btn-primary:hover{background:var(--brand-700);border-color:var(--brand-700);color:#fff;transform:translateY(-1px);box-shadow:var(--shadow-2)}
.btn-primary:active{transform:none;box-shadow:none}
.btn-secondary{background:#fff;color:var(--ink-900);border:1.5px solid var(--ink-900);border-bottom:1.5px solid var(--ink-900)}
.btn-secondary:hover{border-color:var(--brand-600);color:var(--brand-600)}
.btn-secondary:active{transform:translateY(1px)}
.btn-ghost{background:none;border:0;border-radius:0;height:auto;padding:2px 0;color:var(--ink-900);box-shadow:inset 0 -2px 0 0 var(--brand-600)}
.btn-ghost:hover{color:var(--brand-600);box-shadow:inset 0 -2px 0 0 var(--brand-600)}
.btn[disabled],.btn.is-disabled{background:#D9D5CE;color:#8A9199;border-color:#D9D5CE;box-shadow:none;transform:none;cursor:not-allowed}
.btn-row{display:flex;flex-wrap:wrap;gap:14px;align-items:center}

/* ============ 徽章 / 标签 ============ */
.badge{display:inline-flex;align-items:center;gap:6px;height:26px;padding:0 10px;border-radius:var(--r-badge);font-size:12px;font-weight:600;letter-spacing:.02em;background:var(--brand-100);color:var(--brand-700);border:1px solid rgba(232,93,4,.28)}
.badge-teal{background:var(--teal-100);color:var(--teal-600);border-color:rgba(15,158,142,.28)}
.badge-plain{background:#fff;color:var(--ink-600);border-color:var(--line)}
.tag-row{display:flex;flex-wrap:wrap;gap:10px}

/* ============ 小 Hero ============ */
.page-hero{position:relative;background:var(--night);color:var(--on-night);overflow:hidden;isolation:isolate}
.page-hero::before{content:"";position:absolute;inset:0;background-image:url('/assets/images/backpic/back-1.webp');background-size:cover;background-position:center;opacity:.42;filter:saturate(.82)}
.page-hero::after{content:"";position:absolute;inset:0;background:linear-gradient(92deg,rgba(23,27,32,.9) 12%,rgba(23,27,32,.58) 72%,rgba(23,27,32,.72) 100%)}
.page-hero .container{position:relative;z-index:2;min-height:268px;padding-top:44px;padding-bottom:52px;display:flex;flex-direction:column;justify-content:center}
.page-hero h1{color:var(--on-night);margin-bottom:14px}
.page-hero h1::before{content:"";display:block;width:32px;height:3px;border-radius:2px;background:var(--brand-500);margin-bottom:14px}
.page-hero-lead{margin:0 0 18px;font-size:17px;line-height:1.8;color:var(--on-night-2);max-width:620px}
.breadcrumb{display:flex;flex-wrap:wrap;align-items:center;gap:8px;font-size:13px;color:var(--on-night-2);margin-bottom:18px}
.breadcrumb a{color:var(--on-night-2);border-bottom:0}
.breadcrumb a:hover{color:var(--brand-500)}
.breadcrumb span[aria-hidden]{color:rgba(201,207,212,.5)}
.lane{position:absolute;left:0;right:0;bottom:0;height:2px;background:repeating-linear-gradient(90deg,var(--brand-500) 0 22px,transparent 22px 44px);opacity:.55;z-index:3}

/* ============ 步骤轴 ============ */
.steps{position:relative;max-width:840px}
.step{position:relative;display:grid;grid-template-columns:56px 1fr;gap:22px;padding-bottom:34px}
.step:last-child{padding-bottom:0}
.step:not(:last-child)::before{content:"";position:absolute;left:27px;top:62px;bottom:6px;border-left:2px dashed rgba(232,93,4,.38)}
.step-num{width:56px;height:56px;border:2px solid var(--brand-600);border-radius:50%;background:#fff;display:grid;place-items:center;font-family:ui-monospace,SFMono-Regular,Menlo,Consolas,monospace;font-size:22px;font-weight:700;color:var(--brand-600);position:relative;z-index:1;box-shadow:var(--shadow-1)}
.step-body{background:var(--card);border:1px solid var(--line);border-radius:var(--r-card);padding:22px 24px;box-shadow:var(--shadow-1);transition:border-color .18s var(--ease),transform .18s var(--ease),box-shadow .18s var(--ease)}
.step-body:hover{border-color:rgba(232,93,4,.4);transform:translateY(-2px);box-shadow:var(--shadow-2)}
.step-body h3{margin-bottom:10px;font-size:20px}
.step-body p{font-size:15px;line-height:1.85;margin-bottom:12px}
.step-note{display:inline-flex;align-items:center;gap:8px;font-size:13px;line-height:1.7;color:var(--teal-600);background:var(--teal-100);border:1px solid rgba(15,158,142,.24);border-radius:var(--r-badge);padding:5px 10px;margin:0}
.step-note::before{content:"";width:7px;height:7px;border-radius:50%;background:var(--teal-600);flex:0 0 auto}

/* ============ 入口卡 ============ */
.entry-grid{display:grid;grid-template-columns:repeat(2,minmax(0,1fr));gap:24px}
.entry-card{display:flex;flex-direction:column;gap:14px;background:var(--card);border:1px solid var(--line);border-radius:var(--r-card);padding:28px;box-shadow:var(--shadow-1);border-bottom:1px solid var(--line);transition:border-color .18s var(--ease),transform .18s var(--ease),box-shadow .18s var(--ease)}
.entry-card:hover{border-color:rgba(232,93,4,.45);transform:translateY(-2px);box-shadow:var(--shadow-2);color:var(--ink-600)}
.entry-icon{width:48px;height:48px;border-radius:12px;background:var(--brand-100);border:1px solid rgba(232,93,4,.24);display:grid;place-items:center;color:var(--brand-600)}
.entry-icon svg{width:24px;height:24px;fill:none;stroke:currentColor;stroke-width:1.7;stroke-linecap:round;stroke-linejoin:round}
.entry-card h3{margin:0;font-size:20px}
.entry-card p{font-size:15px;line-height:1.85;margin:0}
.entry-more{display:inline-flex;align-items:center;gap:6px;font-size:14px;font-weight:600;color:var(--brand-600);margin-top:2px}
.entry-more::after{content:"→";transition:transform .18s var(--ease)}
.entry-card:hover .entry-more::after{transform:translateX(3px)}

/* ============ 警示块 ============ */
.notice{display:flex;gap:16px;background:var(--brand-100);border:1px solid rgba(232,93,4,.24);border-left:4px solid var(--brand-600);border-radius:12px;padding:20px 22px;margin-top:28px}
.notice-icon{flex:0 0 auto;width:24px;height:24px;color:var(--brand-700);margin-top:2px}
.notice-icon svg{width:24px;height:24px;fill:none;stroke:currentColor;stroke-width:1.8;stroke-linecap:round;stroke-linejoin:round}
.notice p{margin:0;font-size:15px;line-height:1.85;color:#7A3A0A}
.notice strong{color:var(--brand-700)}

/* ============ FAQ ============ */
.faq-wrap{max-width:800px}
.faq-item{background:var(--card);border:1px solid var(--line);border-radius:12px;overflow:hidden;margin-bottom:12px;transition:border-color .18s var(--ease)}
.faq-item:hover{border-color:rgba(232,93,4,.35)}
.faq-q{width:100%;display:flex;align-items:center;justify-content:space-between;gap:18px;background:none;border:0;padding:20px;font-size:17px;font-weight:600;color:var(--ink-900);text-align:left;cursor:pointer}
.faq-icon{position:relative;flex:0 0 auto;width:16px;height:16px}
.faq-icon::before,.faq-icon::after{content:"";position:absolute;left:50%;top:50%;background:var(--brand-600);border-radius:2px;transition:transform .22s var(--ease),opacity .22s var(--ease)}
.faq-icon::before{width:16px;height:2px;transform:translate(-50%,-50%)}
.faq-icon::after{width:2px;height:16px;transform:translate(-50%,-50%)}
.faq-item.is-open .faq-icon::after{transform:translate(-50%,-50%) scaleY(0);opacity:0}
.faq-a{max-height:0;overflow:hidden;transition:max-height .22s ease-out}
.faq-item.is-open .faq-a{max-height:620px}
.faq-a-inner{padding:0 20px 20px;font-size:15px;line-height:1.9;color:var(--ink-600)}
.faq-a-inner p{margin-bottom:.8em}

/* ============ 内容卡片 ============ */
.card-grid{display:grid;grid-template-columns:repeat(3,minmax(0,1fr));gap:24px}
.card{position:relative;display:flex;flex-direction:column;background:var(--card);border:1px solid var(--line);border-radius:var(--r-card);overflow:hidden;box-shadow:var(--shadow-1);border-bottom:1px solid var(--line);transition:border-color .18s var(--ease),transform .18s var(--ease),box-shadow .18s var(--ease)}
.card:hover{border-color:rgba(232,93,4,.4);transform:translateY(-2px);box-shadow:var(--shadow-2);color:var(--ink-600)}
.card-cover{aspect-ratio:16/9;width:100%;border-radius:0}
.card-body{padding:20px;display:flex;flex-direction:column;gap:10px;flex:1}
.card-body h3{font-size:18px;line-height:1.5;margin:0;display:-webkit-box;-webkit-line-clamp:2;-webkit-box-orient:vertical;overflow:hidden}
.card-body p{font-size:14px;line-height:1.75;color:var(--ink-400);margin:0;display:-webkit-box;-webkit-line-clamp:2;-webkit-box-orient:vertical;overflow:hidden}
.card-foot{margin-top:auto;display:flex;align-items:center;justify-content:space-between;font-size:13px;color:var(--ink-400);padding-top:4px}
.card-foot .arrow{color:var(--brand-600);font-weight:700}
.card-badge{position:absolute;top:12px;left:12px;z-index:2}
.section-head-row{display:flex;align-items:flex-end;justify-content:space-between;gap:24px;margin-bottom:36px}
.section-head-row .section-head{margin-bottom:0}
.empty-state{border:1px dashed var(--line);border-radius:var(--r-card);min-height:160px;display:flex;flex-direction:column;align-items:center;justify-content:center;gap:10px;text-align:center;padding:32px;color:var(--ink-400);font-size:14px}
.empty-state svg{width:28px;height:28px;fill:none;stroke:var(--ink-400);stroke-width:1.5}

/* ============ CTA 带 ============ */
.cta-band{position:relative;background:var(--night);color:var(--on-night);padding:72px 0;overflow:hidden;isolation:isolate}
.cta-band::before{content:"";position:absolute;left:0;right:0;top:0;height:2px;background:repeating-linear-gradient(90deg,var(--brand-500) 0 22px,transparent 22px 44px);opacity:.6}
.cta-band::after{content:"";position:absolute;inset:0;background:repeating-linear-gradient(-45deg,rgba(242,121,11,.10) 0 14px,transparent 14px 28px);z-index:-1;opacity:.9}
.cta-inner{position:relative;z-index:2;display:grid;grid-template-columns:1.35fr .95fr;gap:40px;align-items:center}
.cta-band h2{color:var(--on-night)}
.cta-band p{color:var(--on-night-2);font-size:15px;margin:0}
.cta-actions{display:flex;flex-wrap:wrap;gap:14px;justify-content:flex-end}
.cta-meta{font-size:13px;color:rgba(201,207,212,.78);margin-top:14px}

/* ============ 页脚 ============ */
.site-footer{position:relative;background:var(--night);color:var(--on-night-2);padding:0 0 28px;margin-top:0}
.site-footer::before{content:"";display:block;height:4px;background:repeating-linear-gradient(-45deg,var(--brand-500) 0 12px,transparent 12px 24px)}
.footer-grid{display:grid;grid-template-columns:1.5fr 1fr 1fr 1.2fr;gap:36px;padding:56px 0 36px}
.footer-col h4{color:var(--on-night);font-size:16px;margin-bottom:16px}
.footer-brand .logo{margin-bottom:16px}
.footer-brand .logo-text strong{color:var(--on-night)}
.footer-brand .logo-text em{color:rgba(201,207,212,.72)}
.footer-brand p{font-size:14px;line-height:1.8;color:var(--on-night-2);margin:0;max-width:320px}
.footer-links li{margin-bottom:10px}
.footer-links a{color:var(--on-night-2);font-size:14px;border-bottom:0}
.footer-links a:hover{color:var(--brand-500)}
.footer-note{font-size:14px;line-height:2;color:var(--on-night-2);margin:0}
.footer-bottom{border-top:1px solid rgba(247,245,241,.14);padding-top:22px;display:flex;flex-wrap:wrap;gap:10px;justify-content:space-between;font-size:13px;color:rgba(201,207,212,.72)}

/* ============ 移动底部 Tab ============ */
.mobile-tabbar{display:none;position:fixed;left:0;right:0;bottom:0;z-index:70;background:#FFFDFA;border-top:1px solid var(--line);padding-bottom:env(safe-area-inset-bottom)}
.mobile-tabbar a{flex:1;display:flex;flex-direction:column;align-items:center;justify-content:center;gap:3px;height:56px;font-size:10px;color:var(--ink-400);border-bottom:0}
.mobile-tabbar a svg{width:22px;height:22px;fill:none;stroke:currentColor;stroke-width:1.6;stroke-linecap:round;stroke-linejoin:round}
.mobile-tabbar a.is-active{color:var(--brand-600)}

/* ============ 返回顶部 ============ */
.back-top{position:fixed;right:20px;bottom:24px;width:44px;height:44px;border-radius:12px;background:#fff;border:1px solid var(--line);box-shadow:var(--shadow-2);display:grid;place-items:center;cursor:pointer;color:var(--ink-900);opacity:0;visibility:hidden;transition:opacity .2s var(--ease),visibility .2s,color .18s var(--ease)}
.back-top.is-visible{opacity:1;visibility:visible}
.back-top:hover{color:var(--brand-600);border-color:rgba(232,93,4,.5)}
.back-top svg{width:20px;height:20px;fill:none;stroke:currentColor;stroke-width:2;stroke-linecap:round;stroke-linejoin:round}

/* ============ 响应式 ============ */
@media (max-width:1279px){
  h1{font-size:38px}
}
@media (max-width:1023px){
  .section{padding:72px 0}
  .header-inner{gap:20px}
  .main-nav{gap:18px}
  .main-nav a{font-size:14px}
  .card-grid{grid-template-columns:repeat(2,minmax(0,1fr))}
  .cta-inner{grid-template-columns:1fr;gap:28px}
  .cta-actions{justify-content:flex-start}
  .footer-grid{grid-template-columns:1fr 1fr;gap:28px}
}
@media (max-width:767px){
  h1{font-size:28px}
  h2{font-size:22px}
  h3{font-size:18px}
  .container{padding:0 16px}
  .section{padding:48px 0}
  .main-nav{display:none}
  .header-actions .btn-primary{display:none}
  .nav-toggle{display:grid}
  .header-inner{height:64px}
  .site-header.is-scrolled .header-inner{height:58px}
  .page-hero .container{min-height:236px;padding-top:32px;padding-bottom:40px}
  .page-hero-lead{font-size:15px}
  .entry-grid{grid-template-columns:1fr}
  .card-grid{grid-template-columns:1fr}
  .step{grid-template-columns:44px 1fr;gap:16px}
  .step-num{width:44px;height:44px;font-size:18px}
  .step:not(:last-child)::before{left:21px;top:50px}
  .step-body{padding:18px}
  .section-head-row{flex-direction:column;align-items:flex-start;gap:12px}
  .footer-grid{grid-template-columns:1fr;gap:22px;padding:44px 0 28px}
  .footer-bottom{justify-content:flex-start}
  body{padding-bottom:calc(56px + env(safe-area-inset-bottom))}
  .mobile-tabbar{display:flex}
  .back-top{bottom:76px;right:16px}
}
@media (max-width:520px){
  .btn{width:100%}
  .btn-row{width:100%}
  .card-foot{font-size:12px}
}
@media (min-width:768px){
  .drawer,.drawer-mask{display:none}
}
@media (prefers-reduced-motion:reduce){
  *,*::before,*::after{transition-duration:.01ms !important;animation-duration:.01ms !important;scroll-behavior:auto}
}

/* roulang page: category2 */
:root{
  --brand-700:#C94E02;
  --brand-600:#E85D04;
  --brand-500:#F2790B;
  --brand-100:#FDEBD9;
  --teal-600:#0F9E8E;
  --teal-100:#DCF3EF;
  --night:#171B20;
  --ink-900:#14181C;
  --ink-600:#4A545C;
  --ink-400:#7C868E;
  --line:#E4E0D8;
  --paper:#F7F5F1;
  --card:#FFFFFF;
  --danger:#C0392B;
  --warm:#F7F5F1;
  --warm-dim:#C9CFD4;
  --shadow-1:0 1px 2px rgba(20,24,28,.06);
  --shadow-2:0 10px 28px -14px rgba(20,24,28,.20);
  --r-card:14px;
  --r-btn:10px;
  --r-badge:6px;
  --r-img:12px;
  --container:1200px;
  --font-sans:-apple-system,BlinkMacSystemFont,"PingFang SC","HarmonyOS Sans SC","Microsoft YaHei","Noto Sans SC",sans-serif;
  --font-mono:ui-monospace,"SFMono-Regular","JetBrains Mono",Consolas,"Liberation Mono",monospace;
  --t:180ms ease-out;
}
*,*::before,*::after{box-sizing:border-box}
html{-webkit-text-size-adjust:100%}
body{
  margin:0;
  font-family:var(--font-sans);
  font-size:16px;
  line-height:1.85;
  color:var(--ink-600);
  background:var(--paper);
  -webkit-font-smoothing:antialiased;
}
h1,h2,h3,h4{color:var(--ink-900);margin:0;font-weight:700;line-height:1.3}
h1{font-size:42px;font-weight:800;line-height:1.22;letter-spacing:0}
h2{font-size:30px}
h3{font-size:22px;font-weight:600}
h4{font-size:18px;font-weight:600}
p{margin:0 0 1.2em}
p:last-child{margin-bottom:0}
ul,ol{margin:0 0 1.2em;padding-left:1.35em}
li{margin-bottom:12px}
li:last-child{margin-bottom:0}
img{max-width:100%;display:block;object-fit:cover}
a{color:var(--ink-600);text-decoration:none;border-bottom:1px solid transparent;transition:color var(--t),border-color var(--t)}
a:hover{color:var(--brand-600);border-bottom-color:var(--brand-600)}
a:focus-visible,button:focus-visible,summary:focus-visible,input:focus-visible{outline:2px solid var(--teal-600);outline-offset:2px;border-radius:4px}
button{font-family:inherit;cursor:pointer}
input,select,textarea{font-family:inherit;font-size:16px}
.container{max-width:var(--container);margin:0 auto;padding:0 24px;width:100%}
.section{padding:88px 0}
.section-alt{background:#FBFAF8;border-top:1px solid var(--line);border-bottom:1px solid var(--line)}
.sec-head{max-width:760px;margin-bottom:40px}
.sec-head.center{margin-left:auto;margin-right:auto;text-align:center}
.sec-title{position:relative;padding-top:18px;font-size:30px}
.sec-title::before{content:"";position:absolute;left:0;top:0;width:32px;height:3px;border-radius:2px;background:var(--brand-600)}
.sec-head.center .sec-title::before{left:50%;transform:translateX(-50%)}
.sec-desc{margin-top:12px;font-size:16px;color:var(--ink-600);line-height:1.8}
.sec-head.center .sec-desc{margin-left:auto;margin-right:auto}

/* buttons */
.btn{
  display:inline-flex;align-items:center;justify-content:center;gap:8px;
  height:48px;padding:0 24px;border-radius:var(--r-btn);border:1.5px solid transparent;
  font-size:16px;font-weight:600;line-height:1;white-space:nowrap;
  transition:background var(--t),color var(--t),border-color var(--t),transform var(--t),box-shadow var(--t);
}
.btn-lg{height:52px;padding:0 28px}
.btn-sm{height:42px;padding:0 18px;font-size:15px}
.btn-primary{background:var(--brand-600);color:#fff;box-shadow:var(--shadow-1)}
.btn-primary:hover{background:var(--brand-700);color:#fff;transform:translateY(-1px);box-shadow:var(--shadow-2);border-bottom-color:transparent}
.btn-primary:active{transform:translateY(0);box-shadow:var(--shadow-1)}
.btn-secondary{background:#fff;color:var(--ink-900);border-color:var(--ink-900)}
.btn-secondary:hover{color:var(--brand-600);border-color:var(--brand-600);transform:translateY(-1px)}
.btn-outline-light{background:transparent;color:var(--warm);border-color:rgba(247,245,241,.5)}
.btn-outline-light:hover{color:#fff;border-color:var(--brand-500);background:rgba(242,121,11,.16)}
.btn-disabled{background:#D9D5CE;color:#8A9199;box-shadow:none;cursor:not-allowed;pointer-events:none}
.link-ghost{position:relative;font-size:15px;font-weight:600;color:var(--ink-600);padding-bottom:3px;border-bottom:none}
.link-ghost::after{content:"";position:absolute;left:0;bottom:0;width:100%;height:2px;border-radius:2px;background:var(--brand-600);transition:width var(--t)}
.link-ghost:hover{color:var(--brand-600)}
.link-ghost:hover::after{width:100%}
.link-more{font-size:15px;font-weight:600;color:var(--brand-600);border-bottom:none}
.link-more:hover{color:var(--brand-700);border-bottom-color:var(--brand-700)}

/* badges */
.badge{display:inline-flex;align-items:center;gap:6px;padding:3px 10px;border-radius:var(--r-badge);font-size:12px;font-weight:600;line-height:1.7;border:1px solid transparent}
.badge-amber{background:var(--brand-100);color:var(--brand-700);border-color:rgba(232,93,4,.35)}
.badge-teal{background:var(--teal-100);color:var(--teal-600);border-color:rgba(15,158,142,.35)}
.badge-night{background:rgba(247,245,241,.12);color:var(--warm);border-color:rgba(247,245,241,.25)}

/* header */
.site-header{position:sticky;top:0;z-index:60;background:rgba(247,245,241,.94);backdrop-filter:saturate(140%) blur(6px);border-bottom:1px solid transparent;transition:border-color var(--t),box-shadow var(--t)}
.site-header.is-scrolled{border-bottom-color:var(--line);box-shadow:var(--shadow-1)}
.header-inner{display:flex;align-items:center;gap:24px;height:72px;transition:height var(--t)}
.site-header.is-scrolled .header-inner{height:60px}
.logo{display:inline-flex;align-items:center;gap:10px;border-bottom:none}
.logo-mark{width:34px;height:34px;border-radius:8px;background:var(--brand-600);display:inline-flex;align-items:center;justify-content:center;flex:0 0 auto}
.logo-mark svg{width:20px;height:20px;fill:none;stroke:#fff;stroke-width:1.8;stroke-linecap:round;stroke-linejoin:round}
.logo-text{display:flex;flex-direction:column;line-height:1.15}
.logo-text strong{font-size:17px;font-weight:800;color:var(--ink-900);letter-spacing:0}
.logo-text em{font-style:normal;font-size:11px;color:var(--ink-400);letter-spacing:.08em}
.main-nav{display:flex;align-items:center;gap:28px;margin-left:8px}
.main-nav a{position:relative;font-size:15px;font-weight:600;color:var(--ink-600);padding:6px 0;border-bottom:none}
.main-nav a::after{content:"";position:absolute;left:0;right:0;bottom:-19px;height:2px;background:transparent;transition:background var(--t)}
.main-nav a:hover{color:var(--brand-600)}
.main-nav a.is-active{color:var(--ink-900)}
.main-nav a.is-active::after{background:var(--brand-600)}
.header-actions{margin-left:auto;display:flex;align-items:center;gap:18px}
.nav-toggle{display:none;width:42px;height:42px;border-radius:10px;border:1px solid var(--line);background:#fff;align-items:center;justify-content:center}
.nav-toggle svg{width:20px;height:20px;stroke:var(--ink-900);stroke-width:2;fill:none;stroke-linecap:round}
.mobile-drawer{display:none;border-top:1px solid var(--line);background:var(--card);padding:16px 24px 24px}
.mobile-drawer.is-open{display:block}
.mobile-drawer a{display:block;padding:13px 0;font-size:16px;font-weight:600;color:var(--ink-900);border-bottom:1px solid var(--line)}
.mobile-drawer a:last-of-type{border-bottom:none}
.mobile-drawer .btn{width:100%;margin-top:14px}

/* hero */
.cat-hero{position:relative;background:var(--night);color:var(--warm);overflow:hidden}
.cat-hero-bg{position:absolute;inset:0;background-size:cover;background-position:center;filter:saturate(.7);opacity:.5}
.cat-hero::before{content:"";position:absolute;inset:0;background:linear-gradient(160deg,rgba(23,27,32,.86),rgba(23,27,32,.94))}
.cat-hero::after{content:"";position:absolute;left:0;right:0;bottom:0;height:2px;background-image:linear-gradient(90deg,rgba(242,121,11,.55) 0 18px,transparent 18px 36px);background-size:36px 2px}
.cat-hero-inner{position:relative;z-index:2;padding:64px 24px 72px;max-width:1200px;margin:0 auto}
.cat-hero h1{color:#fff;margin:16px 0 14px}
.cat-hero-sub{max-width:620px;color:var(--warm-dim);font-size:17px;margin-bottom:26px}
.hero-cta{display:flex;flex-wrap:wrap;gap:14px}
.cat-hero-stats{display:flex;flex-wrap:wrap;gap:32px;margin-top:36px;padding-top:24px;border-top:1px dashed rgba(247,245,241,.22)}
.cat-hero-stats div{display:flex;flex-direction:column;gap:2px}
.cat-hero-stats b{font-family:var(--font-mono);font-size:24px;color:var(--brand-500);font-weight:700}
.cat-hero-stats span{font-size:13px;color:var(--warm-dim)}

/* breadcrumb */
.crumb{padding:20px 0 0;font-size:14px;color:var(--ink-400)}
.crumb a{color:var(--ink-400);border-bottom:none}
.crumb a:hover{color:var(--brand-600)}
.crumb span{margin:0 8px}

/* table */
.table-wrap{margin-top:8px}
.cmp-table{width:100%;border-collapse:separate;border-spacing:0;background:var(--card);border:1px solid var(--line);border-radius:var(--r-card);overflow:hidden;box-shadow:var(--shadow-1)}
.cmp-table th,.cmp-table td{padding:16px 18px;text-align:left;font-size:15px;border-bottom:1px solid var(--line);vertical-align:middle}
.cmp-table thead th{background:var(--night);color:var(--warm);font-weight:700;font-size:15px;border-bottom:none;position:relative}
.cmp-table thead th .th-note{display:block;font-size:12px;font-weight:500;color:var(--warm-dim);margin-top:2px}
.cmp-table thead th.col-hot{background:#221E19;border-top:1.5px solid var(--brand-600);border-left:1.5px solid var(--brand-600);border-right:1.5px solid var(--brand-600)}
.badge-hot{display:inline-block;margin-left:8px;padding:2px 8px;border-radius:6px;background:var(--brand-600);color:#fff;font-size:11px;font-weight:700;vertical-align:middle}
.cmp-table tbody tr:nth-child(even) td{background:#FBFAF8}
.cmp-table tbody tr:last-child td{border-bottom:none}
.cmp-table td.feat-name{font-weight:700;color:var(--ink-900);background:var(--card);position:sticky;left:0}
.cmp-table tbody tr:nth-child(even) td.feat-name{background:#FBFAF8}
.cmp-table td.col-hot{background:var(--brand-100)!important;border-left:1.5px solid var(--brand-600);border-right:1.5px solid var(--brand-600)}
.cmp-table tbody tr:last-child td.col-hot{border-bottom:1.5px solid var(--brand-600)}
.yes{color:var(--teal-600);font-weight:700}
.no{color:var(--ink-400)}
.table-foot{margin-top:14px;font-size:13px;color:var(--ink-400)}

/* level rows */
.level-stack{display:flex;flex-direction:column;gap:20px}
.level-row{position:relative;display:flex;align-items:flex-start;gap:22px;background:var(--card);border:1px solid var(--line);border-radius:var(--r-card);padding:24px 26px;box-shadow:var(--shadow-1);transition:border-color var(--t),transform var(--t),box-shadow var(--t)}
.level-row:hover{border-color:rgba(232,93,4,.4);transform:translateY(-2px);box-shadow:var(--shadow-2)}
.level-row::before{content:"";position:absolute;left:0;top:18px;bottom:18px;width:5px;border-radius:3px;background:var(--level-color,var(--ink-400))}
.level-bar{display:none}
.level-id{font-family:var(--font-mono);font-size:28px;font-weight:700;color:var(--level-color,var(--ink-400));line-height:1;min-width:52px;padding-top:4px}
.level-body{flex:1 1 auto;min-width:0}
.level-body h3{margin-bottom:6px}
.level-sub{font-size:14px;color:var(--ink-400);margin-bottom:14px}
.level-list{list-style:none;padding:0;margin:0;display:flex;flex-wrap:wrap;gap:8px 22px}
.level-list li{display:flex;align-items:center;gap:8px;font-size:14px;color:var(--ink-600);margin:0}
.level-list li::before{content:"";width:6px;height:6px;border-radius:50%;background:var(--teal-600);flex:0 0 auto}
.level-diff{margin-top:14px;padding-top:12px;border-top:1px dashed var(--line);font-size:13px;color:var(--ink-400)}
.level-side{flex:0 0 auto;display:flex;flex-direction:column;align-items:flex-end;gap:12px;padding-left:16px}
.level-price{font-family:var(--font-mono);font-size:22px;font-weight:700;color:var(--ink-900)}
.level-price small{font-size:12px;color:var(--ink-400);font-weight:500;font-family:var(--font-sans)}

/* media rows */
.media-row{display:grid;grid-template-columns:1.05fr 1fr;gap:40px;align-items:center;margin-bottom:56px}
.media-row:last-child{margin-bottom:0}
.media-row.is-reverse .media-fig{order:2}
.media-row.is-reverse .media-text{order:1}
.media-fig{margin:0;border-radius:var(--r-img);overflow:hidden;border:1px solid var(--line);box-shadow:var(--shadow-1);aspect-ratio:16/10}
.media-fig img{width:100%;height:100%}
.media-text h3{position:relative;padding-top:16px;margin-bottom:12px}
.media-text h3::before{content:"";position:absolute;left:0;top:0;width:32px;height:3px;border-radius:2px;background:var(--brand-600)}
.dot-list{list-style:none;padding:0;margin:18px 0 0}
.dot-list li{position:relative;padding-left:22px;font-size:15px}
.dot-list li::before{content:"";position:absolute;left:0;top:12px;width:8px;height:8px;border-radius:2px;background:var(--brand-100);border:1px solid var(--brand-600)}

/* faq */
.faq{max-width:800px;margin:0 auto}
.faq-item{border:1px solid var(--line);border-radius:12px;background:var(--card);margin-bottom:12px;overflow:hidden;box-shadow:var(--shadow-1)}
.faq-item summary{position:relative;list-style:none;cursor:pointer;padding:20px 56px 20px 20px;font-size:17px;font-weight:600;color:var(--ink-900)}
.faq-item summary::-webkit-details-marker{display:none}
.faq-item summary:hover{color:var(--brand-600)}
.faq-icon{position:absolute;right:20px;top:50%;width:18px;height:18px;transform:translateY(-50%)}
.faq-icon::before,.faq-icon::after{content:"";position:absolute;left:0;top:8px;width:18px;height:2px;border-radius:2px;background:var(--ink-600);transition:transform 220ms ease-out}
.faq-icon::after{transform:rotate(90deg)}
.faq-item[open] .faq-icon::after{transform:rotate(0deg)}
.faq-item[open] summary{border-bottom:1px dashed var(--line)}
.faq-body{padding:16px 20px 20px;font-size:15px;line-height:1.9;color:var(--ink-600)}

/* cta band */
.cta-band{position:relative;background:var(--night);color:var(--warm);overflow:hidden}
.cta-band::before{content:"";position:absolute;inset:0;background-image:repeating-linear-gradient(115deg,rgba(247,245,241,.06) 0 14px,transparent 14px 36px)}
.cta-band::after{content:"";position:absolute;top:0;left:0;right:0;height:4px;background-image:linear-gradient(90deg,var(--brand-600) 0 40px,var(--brand-500) 40px 80px);background-size:80px 4px;opacity:.9}
.cta-inner{position:relative;z-index:2;padding:64px 24px;display:flex;align-items:center;justify-content:space-between;gap:32px;flex-wrap:wrap;max-width:1200px;margin:0 auto}
.cta-inner h2{color:#fff;font-size:28px;position:relative;padding-top:0}
.cta-inner p{color:var(--warm-dim);margin:10px 0 0;font-size:15px;max-width:560px}
.cta-actions{display:flex;gap:14px;flex-wrap:wrap}

/* footer */
.site-footer{position:relative;background:var(--night);color:var(--warm-dim);padding:64px 0 28px;margin-top:0}
.site-footer::before{content:"";position:absolute;top:0;left:0;right:0;height:4px;background-image:repeating-linear-gradient(115deg,rgba(242,121,11,.7) 0 10px,transparent 10px 22px)}
.footer-grid{display:grid;grid-template-columns:1.5fr 1fr 1fr 1.2fr;gap:36px}
.footer-col h4{color:#fff;font-size:15px;font-weight:700;margin-bottom:16px}
.footer-brand .logo-text strong{color:#fff}
.footer-brand .logo-text em{color:var(--warm-dim)}
.footer-brand p{font-size:14px;line-height:1.8;margin-top:16px;max-width:320px}
.footer-links{list-style:none;padding:0;margin:0}
.footer-links li{margin-bottom:10px}
.footer-links a{color:var(--warm-dim);font-size:14px;border-bottom:none}
.footer-links a:hover{color:var(--brand-500)}
.footer-note{font-size:14px;line-height:1.9;margin:0}
.footer-bottom{margin-top:40px;padding-top:20px;border-top:1px dashed rgba(247,245,241,.18);display:flex;justify-content:space-between;gap:16px;flex-wrap:wrap;font-size:13px;color:var(--ink-400)}
.footer-group{border-bottom:1px solid rgba(247,245,241,.14);padding-bottom:6px}

/* mobile tab */
.mobile-tab{display:none}
.to-top{position:fixed;right:20px;bottom:28px;width:46px;height:46px;border-radius:12px;border:1px solid var(--line);background:#fff;box-shadow:var(--shadow-2);display:flex;align-items:center;justify-content:center;opacity:0;pointer-events:none;transition:opacity var(--t),transform var(--t);z-index:70}
.to-top.is-show{opacity:1;pointer-events:auto}
.to-top:hover{transform:translateY(-2px)}
.to-top svg{width:18px;height:18px;stroke:var(--ink-900);stroke-width:2;fill:none;stroke-linecap:round;stroke-linejoin:round}

@media (prefers-reduced-motion:reduce){
  *{transition:none!important;animation:none!important}
}

@media (max-width:1279px){
  .container{padding:0 22px}
}
@media (max-width:1023px){
  .main-nav{display:none}
  .header-actions .link-ghost{display:none}
  .nav-toggle{display:inline-flex}
  .section{padding:72px 0}
  h1{font-size:34px}
  .media-row{grid-template-columns:1fr;gap:24px}
  .media-row.is-reverse .media-fig{order:0}
  .media-row.is-reverse .media-text{order:0}
  .footer-grid{grid-template-columns:1fr 1fr;gap:28px}
  .cmp-table td.feat-name{position:static}
}
@media (max-width:767px){
  h1{font-size:28px}
  h2,.sec-title{font-size:22px}
  h3{font-size:18px}
  .section{padding:48px 0}
  .container{padding:0 16px}
  .cat-hero-inner{padding:42px 16px 52px}
  .cat-hero-sub{font-size:15px}
  .hero-cta .btn{width:100%}
  .cat-hero-stats{gap:20px;margin-top:26px}
  .header-actions .btn{display:none}
  .cmp-table{display:block;border:none;background:transparent;box-shadow:none;border-radius:0}
  .cmp-table thead{display:none}
  .cmp-table tbody{display:block}
  .cmp-table tbody tr{display:block;background:var(--card);border:1px solid var(--line);border-radius:var(--r-card);padding:14px 16px 10px;margin-bottom:12px;box-shadow:var(--shadow-1)}
  .cmp-table tbody td{display:grid;grid-template-columns:100px 1fr;gap:10px;align-items:center;padding:9px 0;border-bottom:1px dashed var(--line);background:transparent!important;font-size:14px}
  .cmp-table tbody td::before{content:attr(data-label);font-size:12px;color:var(--ink-400);font-weight:500}
  .cmp-table tbody td:last-child{border-bottom:none}
  .cmp-table td.feat-name{display:block;font-size:16px;font-weight:700;color:var(--ink-900);padding:0 0 10px;border-bottom:1px solid var(--line);margin-bottom:6px}
  .cmp-table td.feat-name::before{content:none}
  .cmp-table td.col-hot{border-left:none;border-right:none}
  .level-row{flex-direction:column;gap:14px;padding:20px}
  .level-id{padding-top:0}
  .level-side{flex-direction:row;align-items:center;justify-content:space-between;width:100%;padding-left:0;border-top:1px dashed var(--line);padding-top:14px}
  .level-list li{width:100%}
  .cta-inner{padding:44px 16px;flex-direction:column;align-items:flex-start}
  .cta-actions{width:100%}
  .cta-actions .btn{width:100%}
  .footer-grid{grid-template-columns:1fr;gap:0}
  .footer-col{padding:16px 0;border-bottom:1px solid rgba(247,245,241,.14)}
  .footer-brand{border-bottom:1px solid rgba(247,245,241,.14)}
  .footer-col:last-child{border-bottom:none}
  .footer-col h4{margin-bottom:10px}
  .footer-bottom{flex-direction:column;gap:8px}
  .mobile-tab{
    display:flex;position:fixed;left:0;right:0;bottom:0;z-index:80;
    height:calc(56px + env(safe-area-inset-bottom));
    padding-bottom:env(safe-area-inset-bottom);
    background:rgba(255,255,255,.97);border-top:1px solid var(--line);
    box-shadow:0 -4px 18px -12px rgba(20,24,28,.35);
  }
  .tab-item{flex:1;display:flex;flex-direction:column;align-items:center;justify-content:center;gap:3px;font-size:10px;color:var(--ink-400);border-bottom:none}
  .tab-item svg{width:22px;height:22px;stroke:currentColor;stroke-width:1.8;fill:none;stroke-linecap:round;stroke-linejoin:round}
  .tab-item.is-active{color:var(--brand-600)}
  body{padding-bottom:calc(56px + env(safe-area-inset-bottom))}
  .to-top{bottom:76px;right:14px;width:42px;height:42px}
}
@media (max-width:519px){
  .cat-hero-stats div{flex:1 1 40%}
  .btn{font-size:15px}
}

/* roulang page: category3 */
:root{
  --brand-600:#E85D04;
  --brand-500:#F2790B;
  --brand-700:#C94E02;
  --brand-100:#FDEBD9;
  --teal-600:#0F9E8E;
  --teal-100:#DCF3EF;
  --night:#171B20;
  --ink-900:#14181C;
  --ink-600:#4A545C;
  --ink-400:#7C868E;
  --line:#E4E0D8;
  --paper:#F7F5F1;
  --card:#FFFFFF;
  --danger:#C0392B;
  --radius-card:14px;
  --radius-btn:10px;
  --radius-badge:6px;
  --radius-img:12px;
  --shadow-1:0 1px 2px rgba(20,24,28,.06);
  --shadow-2:0 10px 28px -14px rgba(20,24,28,.20);
  --container:1200px;
  --font:-apple-system,"PingFang SC","HarmonyOS Sans SC","Microsoft YaHei","Noto Sans SC",sans-serif;
  --mono:ui-monospace,SFMono-Regular,"SF Mono",Menlo,Consolas,"Liberation Mono",monospace;
}
*,*::before,*::after{box-sizing:border-box;}
html{-webkit-text-size-adjust:100%;scroll-behavior:smooth;}
body{
  margin:0;
  font-family:var(--font);
  font-size:16px;
  line-height:1.85;
  color:var(--ink-600);
  background:var(--paper);
  -webkit-font-smoothing:antialiased;
  padding-bottom:0;
}
img{max-width:100%;display:block;object-fit:cover;}
a{color:var(--ink-600);text-decoration:none;transition:color .18s ease-out;}
a:hover{color:var(--brand-600);}
h1,h2,h3,h4{margin:0;color:var(--ink-900);font-weight:700;line-height:1.3;}
h1{font-size:42px;line-height:1.22;font-weight:800;letter-spacing:0;}
h2{font-size:30px;line-height:1.32;}
h3{font-size:22px;font-weight:600;}
h4{font-size:18px;font-weight:600;}
p{margin:0 0 1.2em;}
ul,ol{margin:0;padding:0;list-style:none;}
button{font-family:inherit;}
:focus-visible{outline:2px solid var(--teal-600);outline-offset:2px;}
.container{max-width:var(--container);margin:0 auto;padding:0 24px;}
.section{padding:88px 0;}
.section--tight{padding:64px 0;}
.section--dark{background:var(--night);color:#C9CFD4;}
.section--dark h2,.section--dark h3,.section--dark h4{color:#F7F5F1;}

/* ---------- 顶部导航 ---------- */
.skip-link{position:absolute;left:-9999px;top:0;background:var(--brand-600);color:#fff;padding:10px 18px;border-radius:0 0 10px 0;z-index:200;}
.skip-link:focus{left:0;color:#fff;}
.site-header{
  position:sticky;top:0;z-index:80;
  background:var(--paper);
  border-bottom:1px solid transparent;
  transition:box-shadow .2s ease-out,border-color .2s ease-out;
}
.site-header.is-scrolled{border-bottom-color:var(--line);box-shadow:var(--shadow-1);}
.header-inner{display:flex;align-items:center;gap:28px;height:72px;transition:height .2s ease-out;}
.site-header.is-scrolled .header-inner{height:60px;}
.logo{display:inline-flex;align-items:center;gap:10px;flex:0 0 auto;}
.logo-mark{
  width:36px;height:36px;border-radius:8px;background:var(--brand-500);
  display:inline-flex;align-items:center;justify-content:center;
  box-shadow:var(--shadow-1);flex:0 0 auto;
}
.logo-mark svg{width:21px;height:21px;fill:none;stroke:#fff;stroke-width:1.7;stroke-linecap:round;stroke-linejoin:round;}
.logo-text{display:flex;flex-direction:column;line-height:1.15;}
.logo-text strong{font-size:17px;font-weight:800;color:var(--ink-900);letter-spacing:.2px;}
.logo-text em{font-style:normal;font-size:11px;color:var(--ink-400);letter-spacing:.6px;}
.main-nav{display:flex;align-items:center;gap:4px;}
.main-nav a{
  position:relative;padding:9px 13px;border-radius:8px;
  font-size:15px;font-weight:500;color:var(--ink-600);
  transition:color .18s ease-out,background-color .18s ease-out;
}
.main-nav a::after{
  content:"";position:absolute;left:13px;right:13px;bottom:2px;height:2px;border-radius:2px;
  background:var(--brand-500);transform:scaleX(0);transform-origin:left center;
  transition:transform .2s ease-out;
}
.main-nav a:hover{color:var(--brand-600);}
.main-nav a:hover::after{transform:scaleX(1);}
.main-nav a.is-active{color:var(--ink-900);font-weight:600;}
.main-nav a.is-active::after{transform:scaleX(1);}
.header-actions{display:flex;align-items:center;gap:16px;margin-left:auto;}
.link-ghost{
  font-size:14px;font-weight:600;color:var(--ink-600);
  border-bottom:2px solid var(--brand-500);padding-bottom:2px;
  transition:color .18s ease-out,border-color .18s ease-out;
}
.link-ghost:hover{color:var(--brand-600);border-color:var(--brand-600);}
.nav-toggle{
  display:none;width:44px;height:44px;border:1px solid var(--line);border-radius:10px;
  background:var(--card);align-items:center;justify-content:center;cursor:pointer;
}
.nav-toggle span{display:block;width:18px;height:2px;background:var(--ink-900);border-radius:2px;position:relative;}
.nav-toggle span::before,.nav-toggle span::after{
  content:"";position:absolute;left:0;width:18px;height:2px;background:var(--ink-900);border-radius:2px;
  transition:transform .2s ease-out;
}
.nav-toggle span::before{top:-6px;}
.nav-toggle span::after{top:6px;}

/* 移动抽屉 */
.drawer{
  position:fixed;left:0;right:0;top:64px;z-index:75;
  background:var(--card);border-bottom:1px solid var(--line);
  box-shadow:var(--shadow-2);padding:12px 16px 20px;
  transform:translateY(-12px);opacity:0;pointer-events:none;
  transition:opacity .2s ease-out,transform .2s ease-out;
  max-height:calc(100vh - 64px);overflow-y:auto;
}
.drawer.is-open{opacity:1;transform:translateY(0);pointer-events:auto;}
.drawer a{
  display:block;padding:13px 12px;border-radius:10px;font-size:16px;font-weight:500;color:var(--ink-900);
}
.drawer a:hover{background:var(--brand-100);color:var(--brand-700);}
.drawer a.is-active{background:var(--brand-100);color:var(--brand-700);font-weight:600;}
.drawer .btn{width:100%;margin-top:12px;}

/* ---------- 按钮 ---------- */
.btn{
  display:inline-flex;align-items:center;justify-content:center;gap:8px;
  height:48px;padding:0 24px;border-radius:var(--radius-btn);
  font-size:15px;font-weight:600;letter-spacing:.2px;cursor:pointer;
  border:1.5px solid transparent;text-align:center;white-space:nowrap;
  transition:background-color .18s ease-out,color .18s ease-out,border-color .18s ease-out,transform .18s ease-out,box-shadow .18s ease-out;
}
.btn-primary{background:var(--brand-600);color:#fff;box-shadow:var(--shadow-1);}
.btn-primary:hover{background:var(--brand-700);color:#fff;transform:translateY(-1px);box-shadow:var(--shadow-2);}
.btn-primary:active{transform:translateY(0);box-shadow:var(--shadow-1);}
.btn-secondary{background:var(--card);color:var(--ink-900);border-color:var(--ink-900);}
.btn-secondary:hover{color:var(--brand-600);border-color:var(--brand-600);background:var(--card);}
.btn-secondary:active{transform:translateY(1px);}
.btn-ghost{background:transparent;color:var(--brand-700);border:none;height:auto;padding:0 0 4px;border-bottom:2px solid var(--brand-500);border-radius:0;}
.btn-ghost:hover{color:var(--brand-600);border-bottom-color:var(--brand-600);}
.btn-sm{height:40px;padding:0 18px;font-size:14px;}
.btn-lg{height:52px;padding:0 28px;font-size:16px;}

/* ---------- 徽章 / 标签 ---------- */
.badge{
  display:inline-flex;align-items:center;gap:6px;
  padding:4px 10px;border-radius:var(--radius-badge);border:1px solid var(--line);
  font-size:12px;font-weight:600;line-height:1.6;color:var(--ink-600);background:var(--card);
}
.badge-amber{background:var(--brand-100);border-color:rgba(232,93,4,.32);color:var(--brand-700);}
.badge-teal{background:var(--teal-100);border-color:rgba(15,158,142,.30);color:var(--teal-600);}
.eyebrow{
  display:inline-block;font-size:12px;font-weight:700;letter-spacing:1.4px;
  color:var(--brand-600);text-transform:uppercase;margin-bottom:10px;
}
.sec-title::before{
  content:"";display:block;width:32px;height:3px;border-radius:2px;
  background:var(--brand-500);margin-bottom:12px;
}
.section-head{max-width:760px;margin-bottom:40px;}
.section-head p{margin-top:12px;font-size:16px;color:var(--ink-600);}
.section--dark .section-head p{color:#C9CFD4;}

/* ---------- 小 Hero ---------- */
.page-hero{
  position:relative;overflow:hidden;background:var(--night);
  background-image:url('/assets/images/backpic/back-2.png');
  background-size:cover;background-position:center;
  color:#F7F5F1;
}
.page-hero::before{content:"";position:absolute;inset:0;background:rgba(20,24,28,.64);}
.page-hero-inner{position:relative;z-index:1;padding:54px 0 58px;}
.crumb{display:flex;align-items:center;gap:8px;font-size:13px;color:#C9CFD4;margin-bottom:18px;flex-wrap:wrap;}
.crumb a{color:#C9CFD4;}
.crumb a:hover{color:var(--brand-500);}
.crumb span[aria-current]{color:#F7F5F1;}
.page-hero h1{color:#F7F5F1;max-width:760px;}
.page-hero-sub{margin:16px 0 0;font-size:17px;line-height:1.7;color:#D7DCE0;max-width:640px;}
.hero-tags{display:flex;flex-wrap:wrap;gap:10px;margin-top:22px;}
.lane-band::after{
  content:"";display:block;height:2px;
  background-image:repeating-linear-gradient(90deg,var(--brand-500) 0 26px,transparent 26px 52px);
  opacity:.75;
}

/* ---------- 图文交错 ---------- */
.alt-block{
  display:grid;grid-template-columns:1.05fr 1fr;gap:48px;align-items:center;
  padding:36px 0;border-bottom:1px dashed var(--line);
}
.alt-block:last-child{border-bottom:none;padding-bottom:0;}
.alt-block:first-child{padding-top:0;}
.alt-block.is-reverse .alt-media{order:2;}
.alt-media{
  position:relative;margin:0;border-radius:var(--radius-img);overflow:hidden;
  border:1px solid var(--line);box-shadow:var(--shadow-2);background:var(--card);
}
.alt-media img{width:100%;aspect-ratio:16/10;filter:saturate(.92);}
.alt-media figcaption{
  position:absolute;left:0;right:0;bottom:0;padding:10px 14px;font-size:13px;color:#F7F5F1;
  background:linear-gradient(180deg,rgba(20,24,28,0) 0%,rgba(20,24,28,.78) 100%);
}
.alt-body h3{margin:12px 0 10px;}
.alt-body p{margin-bottom:14px;}
.dot-list li{
  position:relative;padding-left:20px;margin-bottom:12px;font-size:15px;line-height:1.8;
}
.dot-list li::before{
  content:"";position:absolute;left:0;top:11px;width:8px;height:8px;border-radius:50%;
  background:var(--teal-100);border:2px solid var(--teal-600);
}
.dot-list li strong{color:var(--ink-900);font-weight:600;}

/* ---------- 指标块 ---------- */
.metrics{display:grid;grid-template-columns:repeat(3,1fr);gap:24px;}
.metric{
  background:var(--card);border:1px solid var(--line);border-radius:var(--radius-card);
  padding:26px 24px;box-shadow:var(--shadow-1);
  transition:border-color .18s ease-out,transform .18s ease-out,box-shadow .18s ease-out;
}
.metric:hover{border-color:rgba(232,93,4,.4);transform:translateY(-2px);box-shadow:var(--shadow-2);}
.metric-num{
  font-family:var(--mono);font-size:38px;font-weight:700;line-height:1;color:var(--brand-600);
  letter-spacing:-1px;
}
.metric-unit{font-family:var(--mono);font-size:14px;color:var(--ink-400);margin-left:6px;}
.metric h3{font-size:18px;margin:14px 0 8px;}
.metric p{margin:0;font-size:14px;line-height:1.75;color:var(--ink-600);}

/* ---------- 操作清单 ---------- */
.checklist{
  display:grid;grid-template-columns:repeat(2,1fr);gap:14px;
}
.checklist li{
  display:flex;gap:14px;align-items:flex-start;
  background:var(--card);border:1px solid var(--line);border-radius:var(--radius-card);
  padding:18px 20px;box-shadow:var(--shadow-1);
  transition:border-color .18s ease-out,transform .18s ease-out,box-shadow .18s ease-out;
}
.checklist li:hover{border-color:rgba(232,93,4,.4);transform:translateY(-2px);box-shadow:var(--shadow-2);}
.check-icon{
  flex:0 0 auto;width:24px;height:24px;border-radius:50%;margin-top:3px;
  background:var(--teal-100);display:inline-flex;align-items:center;justify-content:center;
}
.check-icon svg{width:14px;height:14px;fill:none;stroke:var(--teal-600);stroke-width:2.4;stroke-linecap:round;stroke-linejoin:round;}
.checklist strong{display:block;color:var(--ink-900);font-weight:600;font-size:15px;margin-bottom:4px;}
.checklist span.check-desc{font-size:14px;line-height:1.75;color:var(--ink-600);}

/* ---------- FAQ ---------- */
.faq{max-width:800px;}
.faq-item{
  border:1px solid var(--line);border-radius:12px;background:var(--card);
  margin-bottom:12px;overflow:hidden;box-shadow:var(--shadow-1);
  transition:border-color .18s ease-out;
}
.faq-item.is-open{border-color:rgba(232,93,4,.45);}
.faq-q{
  width:100%;display:flex;align-items:center;justify-content:space-between;gap:16px;
  padding:20px;background:transparent;border:none;cursor:pointer;text-align:left;
  font-size:17px;font-weight:600;color:var(--ink-900);line-height:1.5;
}
.faq-q:hover{color:var(--brand-600);}
.faq-icon{position:relative;flex:0 0 auto;width:18px;height:18px;}
.faq-icon::before,.faq-icon::after{
  content:"";position:absolute;background:var(--brand-600);border-radius:2px;
  transition:transform .22s ease-out,opacity .22s ease-out;
}
.faq-icon::before{left:0;top:8px;width:18px;height:2px;}
.faq-icon::after{left:8px;top:0;width:2px;height:18px;}
.faq-item.is-open .faq-icon::after{transform:rotate(90deg);opacity:0;}
.faq-a{max-height:0;overflow:hidden;transition:max-height .22s ease-out;}
.faq-a-inner{padding:0 20px 20px;font-size:15px;line-height:1.9;color:var(--ink-600);}
.faq-a-inner p:last-child{margin-bottom:0;}

/* ---------- 相关内容卡 ---------- */
.post-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:24px;}
.post-card{
  display:flex;flex-direction:column;background:var(--card);
  border:1px solid var(--line);border-radius:var(--radius-card);overflow:hidden;
  box-shadow:var(--shadow-1);
  transition:border-color .18s ease-out,transform .18s ease-out,box-shadow .18s ease-out;
}
.post-card:hover{border-color:rgba(232,93,4,.4);transform:translateY(-2px);box-shadow:var(--shadow-2);}
.post-cover{position:relative;}
.post-cover img{width:100%;aspect-ratio:16/9;filter:saturate(.94);}
.post-cover .badge{position:absolute;left:12px;top:12px;background:var(--card);}
.post-body{padding:18px 20px 20px;display:flex;flex-direction:column;flex:1;}
.post-body h3{font-size:18px;font-weight:600;line-height:1.5;margin-bottom:10px;
  display:-webkit-box;-webkit-line-clamp:2;-webkit-box-orient:vertical;overflow:hidden;}
.post-card:hover .post-body h3{color:var(--brand-600);}
.post-body p{font-size:14px;line-height:1.75;color:var(--ink-600);margin:0 0 16px;
  display:-webkit-box;-webkit-line-clamp:2;-webkit-box-orient:vertical;overflow:hidden;}
.post-meta{
  margin-top:auto;display:flex;align-items:center;justify-content:space-between;
  font-size:13px;color:var(--ink-400);border-top:1px solid var(--line);padding-top:12px;
}
.post-meta .arrow{color:var(--brand-600);font-weight:600;}

/* ---------- CTA 带 ---------- */
.cta-band{position:relative;background:var(--night);color:#F7F5F1;overflow:hidden;}
.cta-band::before{
  content:"";position:absolute;top:0;left:0;right:0;height:4px;
  background-image:repeating-linear-gradient(135deg,var(--brand-500) 0 10px,rgba(232,93,4,.12) 10px 20px);
  opacity:.7;
}
.cta-band::after{
  content:"";position:absolute;right:-60px;top:-40px;width:280px;height:280px;border-radius:50%;
  background:radial-gradient(circle,rgba(232,93,4,.20) 0%,rgba(232,93,4,0) 70%);
  pointer-events:none;
}
.cta-inner{
  position:relative;z-index:1;padding:64px 0;
  display:flex;align-items:center;justify-content:space-between;gap:32px;flex-wrap:wrap;
}
.cta-inner h2{color:#F7F5F1;font-size:28px;}
.cta-inner p{margin:12px 0 0;color:#C9CFD4;font-size:15px;max-width:560px;}
.cta-actions{display:flex;gap:14px;flex-wrap:wrap;}
.cta-band .btn-secondary{background:transparent;color:#F7F5F1;border-color:rgba(247,245,241,.55);}
.cta-band .btn-secondary:hover{color:var(--brand-500);border-color:var(--brand-500);background:transparent;}

/* ---------- 页脚 ---------- */
.site-footer{
  position:relative;background:var(--night);color:#C9CFD4;padding:56px 0 0;font-size:14px;
}
.site-footer::before{
  content:"";position:absolute;top:0;left:0;right:0;height:4px;
  background-image:repeating-linear-gradient(135deg,var(--brand-500) 0 10px,rgba(232,93,4,.12) 10px 20px);
  opacity:.6;
}
.footer-grid{display:grid;grid-template-columns:1.4fr 1fr 1fr 1.2fr;gap:32px;}
.footer-brand p{margin:16px 0 0;line-height:1.8;color:#9AA3AA;max-width:320px;}
.site-footer .logo-text strong{color:#F7F5F1;}
.site-footer .logo-text em{color:#8B949B;}
.footer-col h4{color:#F7F5F1;font-size:15px;margin-bottom:16px;letter-spacing:.4px;}
.footer-links li{margin-bottom:12px;}
.footer-links a{color:#C9CFD4;font-size:14px;}
.footer-links a:hover{color:var(--brand-500);}
.footer-note{line-height:1.9;color:#9AA3AA;margin:0;}
.footer-bottom{
  margin-top:44px;padding:20px 0 26px;border-top:1px solid rgba(247,245,241,.10);
  display:flex;justify-content:space-between;gap:14px;flex-wrap:wrap;
  font-size:13px;color:#8B949B;
}

/* ---------- 移动底部 Tab ---------- */
.tabbar{
  display:none;position:fixed;left:0;right:0;bottom:0;z-index:90;
  background:var(--card);border-top:1px solid var(--line);
  padding-bottom:env(safe-area-inset-bottom);
  box-shadow:0 -6px 18px -12px rgba(20,24,28,.28);
}
.tabbar-inner{display:grid;grid-template-columns:repeat(5,1fr);height:56px;}
.tabbar a{
  display:flex;flex-direction:column;align-items:center;justify-content:center;gap:3px;
  font-size:10px;color:var(--ink-400);font-weight:500;
}
.tabbar a svg{width:22px;height:22px;fill:none;stroke:currentColor;stroke-width:1.7;stroke-linecap:round;stroke-linejoin:round;}
.tabbar a.is-active{color:var(--brand-600);}
.tabbar a:hover{color:var(--brand-600);}

/* ---------- 返回顶部 ---------- */
.back-top{
  position:fixed;right:24px;bottom:28px;z-index:70;
  width:44px;height:44px;border-radius:50%;
  background:var(--card);border:1px solid var(--line);box-shadow:var(--shadow-2);
  display:flex;align-items:center;justify-content:center;cursor:pointer;
  opacity:0;pointer-events:none;transition:opacity .2s ease-out,transform .2s ease-out;
}
.back-top.is-visible{opacity:1;pointer-events:auto;}
.back-top:hover{transform:translateY(-2px);border-color:rgba(232,93,4,.5);}
.back-top svg{width:18px;height:18px;fill:none;stroke:var(--brand-600);stroke-width:2;stroke-linecap:round;stroke-linejoin:round;}

/* ---------- 响应式 ---------- */
@media (max-width:1279px){
  .header-inner{gap:20px;}
  .main-nav a{padding:9px 10px;font-size:14.5px;}
}
@media (max-width:1023px){
  h1{font-size:34px;}
  h2{font-size:26px;}
  .section{padding:72px 0;}
  .main-nav,.header-actions .link-ghost{display:none;}
  .nav-toggle{display:inline-flex;margin-left:auto;}
  .header-actions{margin-left:0;}
  .header-actions .btn{display:none;}
  .alt-block{grid-template-columns:1fr;gap:24px;padding:32px 0;}
  .alt-block.is-reverse .alt-media{order:0;}
  .metrics{grid-template-columns:1fr;gap:16px;}
  .checklist{grid-template-columns:1fr;}
  .post-grid{grid-template-columns:repeat(2,1fr);}
  .footer-grid{grid-template-columns:1fr 1fr;}
  .cta-inner{padding:56px 0;}
}
@media (max-width:767px){
  h1{font-size:28px;}
  h2{font-size:22px;}
  h3{font-size:18px;}
  .container{padding:0 16px;}
  .section{padding:48px 0;}
  .section-head{margin-bottom:28px;}
  .page-hero-inner{padding:38px 0 42px;}
  .page-hero-sub{font-size:15px;}
  .header-inner{height:64px;}
  .site-header.is-scrolled .header-inner{height:58px;}
  .drawer{top:58px;}
  .post-grid{grid-template-columns:1fr;}
  .footer-grid{grid-template-columns:1fr;gap:26px;}
  .footer-bottom{flex-direction:column;gap:8px;}
  .cta-inner{padding:48px 0;flex-direction:column;align-items:flex-start;}
  .cta-actions{width:100%;}
  .cta-actions .btn{flex:1 1 auto;}
  .tabbar{display:block;}
  body{padding-bottom:56px;}
  .back-top{bottom:76px;right:16px;}
  .metric-num{font-size:32px;}
}
@media (prefers-reduced-motion: reduce){
  *,*::before,*::after{transition:none !important;animation:none !important;}
  html{scroll-behavior:auto;}
}