/* roulang page: index */
:root{
  --ink:#0D1F1D;
  --ink-soft:#2B3330;
  --paper:#F6F3EE;
  --paper-2:#FFFFFF;
  --accent:#E8622F;
  --accent-ink:#0D1F1D;
  --line:#E3DED6;
  --muted:#7C8580;
  --danger:#B4341F;
  --radius-card:12px;
  --radius-img:10px;
  --shadow-1:0 1px 2px rgba(13,31,29,.05);
  --shadow-2:0 12px 28px rgba(13,31,29,.10);
  --side-w:236px;
  --font-sans:"PingFang SC","HarmonyOS Sans SC","Microsoft YaHei",system-ui,-apple-system,"Segoe UI",sans-serif;
  --font-mono:"SFMono-Regular","JetBrains Mono",Consolas,"Liberation Mono",monospace;
  --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;
  font-family:var(--font-sans);
  font-size:16.5px;
  line-height:1.85;
  color:var(--ink-soft);
  background:var(--paper);
  -webkit-font-smoothing:antialiased;
}
img{max-width:100%;height:auto;display:block;}
a{color:inherit;text-decoration:none;}
a:hover{color:var(--accent);}
ul,ol{margin:0;padding:0;list-style:none;}
h1,h2,h3,h4,p{margin:0;}
button{font-family:inherit;}
:focus-visible{outline:2px solid var(--accent);outline-offset:3px;border-radius:4px;}

/* ---------- 布局骨架 ---------- */
.shell{display:block;min-height:100vh;}
.main-col{margin-left:var(--side-w);min-height:100vh;display:flex;flex-direction:column;}
.container{width:100%;max-width:1240px;margin:0 auto;padding:0 28px;}
.section{padding:88px 0;}
.section--tight{padding:64px 0;}
.section--paper{background:var(--paper-2);border-top:1px solid var(--line);border-bottom:1px solid var(--line);}
.section-head{max-width:760px;margin-bottom:40px;}
.section-kicker{
  font-family:var(--font-mono);font-size:12px;letter-spacing:.08em;text-transform:uppercase;
  color:var(--accent);font-weight:600;margin-bottom:12px;display:block;
}
.section-title{font-size:30px;line-height:1.28;font-weight:700;color:var(--ink);letter-spacing:-.01em;}
.section-desc{margin-top:14px;color:var(--muted);font-size:16px;max-width:640px;}

/* ---------- 侧栏导航 ---------- */
.side-nav{
  position:fixed;top:0;left:0;bottom:0;width:var(--side-w);
  background:var(--ink);z-index:60;display:flex;flex-direction:column;
  overflow-y:auto;
}
.brand{
  height:88px;display:flex;align-items:center;gap:11px;padding:0 22px;
  border-bottom:1px solid rgba(255,255,255,.09);flex:none;
}
.brand-mark{
  width:34px;height:34px;border-radius:10px;background:var(--accent);color:var(--accent-ink);
  display:grid;place-items:center;font-family:var(--font-mono);font-weight:700;font-size:15px;flex:none;
}
.brand-text{color:#fff;font-weight:700;font-size:16.5px;letter-spacing:.01em;line-height:1.25;}
.brand-text small{display:block;font-family:var(--font-mono);font-size:10.5px;letter-spacing:.1em;color:rgba(255,255,255,.42);font-weight:500;margin-top:2px;}
.side-label{
  padding:24px 22px 8px;font-family:var(--font-mono);font-size:11.5px;
  letter-spacing:.1em;color:rgba(255,255,255,.40);text-transform:uppercase;
}
.side-menu{padding:0 12px;display:flex;flex-direction:column;gap:2px;}
.side-menu a{
  position:relative;display:flex;align-items:center;gap:11px;height:46px;
  padding:0 12px;border-radius:8px;color:rgba(255,255,255,.78);
  font-size:15px;font-weight:600;transition:background .18s var(--ease),color .18s var(--ease);
}
.side-menu a i{width:16px;font-size:13px;color:rgba(255,255,255,.45);transition:color .18s;}
.side-menu a:hover{background:rgba(255,255,255,.07);color:#fff;}
.side-menu a:hover i{color:var(--accent);}
.side-menu a.is-active{background:rgba(255,255,255,.07);color:#fff;}
.side-menu a.is-active i{color:var(--accent);}
.side-menu a.is-active::before{
  content:"";position:absolute;left:-12px;top:10px;bottom:10px;width:3px;
  background:var(--accent);border-radius:0 3px 3px 0;
}
.side-foot{margin-top:auto;padding:18px 22px 26px;border-top:1px solid rgba(255,255,255,.09);display:flex;gap:10px;}
.icon-btn{
  width:40px;height:40px;border-radius:10px;border:1px solid rgba(255,255,255,.16);
  background:transparent;color:rgba(255,255,255,.72);display:grid;place-items:center;
  cursor:pointer;transition:color .18s,border-color .18s,background .18s;
}
.icon-btn:hover{color:var(--accent);border-color:rgba(232,98,47,.55);background:rgba(255,255,255,.05);}
.icon-btn:active{transform:translateY(1px);}

/* ---------- 移动端顶栏与抽屉 ---------- */
.topbar{display:none;}
.nav-mask{
  position:fixed;inset:0;background:rgba(13,31,29,.45);z-index:55;
  opacity:0;visibility:hidden;transition:opacity .24s var(--ease),visibility .24s;
}
.nav-mask.is-show{opacity:1;visibility:visible;}

/* ---------- 按钮 ---------- */
.btn{
  display:inline-flex;align-items:center;gap:9px;height:46px;padding:0 26px;
  border-radius:999px;font-size:15px;font-weight:600;border:1px solid transparent;
  cursor:pointer;transition:filter .18s var(--ease),background .18s var(--ease),color .18s var(--ease),transform .12s;
}
.btn i{transition:transform .18s var(--ease);font-size:13px;}
.btn--primary{background:var(--accent);color:var(--accent-ink);}
.btn--primary:hover{filter:brightness(.94);color:var(--accent-ink);}
.btn--primary:hover i{transform:translateX(3px);}
.btn--primary:active{transform:translateY(1px);}
.btn--ghost{background:transparent;border-color:var(--ink);color:var(--ink);border-radius:10px;}
.btn--ghost:hover{background:var(--ink);color:var(--paper);}
.btn--link{
  display:inline-flex;align-items:center;gap:6px;font-weight:600;color:var(--ink);
  border-bottom:1px solid var(--ink);padding-bottom:2px;text-decoration:none;text-underline-offset:4px;
  transition:color .18s,border-color .18s;
}
.btn--link:hover{color:var(--accent);border-color:var(--accent);}

/* ---------- 徽章与标签 ---------- */
.badge{
  display:inline-flex;align-items:center;height:22px;padding:0 10px;border-radius:999px;
  font-family:var(--font-mono);font-size:11.5px;letter-spacing:.06em;
  background:rgba(13,31,29,.04);border:1px solid var(--line);color:var(--muted);
  transition:background .18s,color .18s,border-color .18s;
}
.badge--accent{background:rgba(232,98,47,.1);border-color:rgba(232,98,47,.3);color:var(--accent);}
a:hover > .badge{background:rgba(232,98,47,.1);border-color:rgba(232,98,47,.32);color:var(--accent);}

/* ---------- Hero ---------- */
.hero{
  position:relative;overflow:hidden;border-bottom:1px solid var(--line);
  background-image:linear-gradient(180deg,rgba(246,243,238,.95),rgba(246,243,238,.99)),url('/assets/images/backpic/back-1.webp');
  background-size:cover;background-position:center;
}
.hero::after{
  content:"01";position:absolute;right:-18px;bottom:-70px;font-family:var(--font-mono);
  font-size:260px;line-height:1;font-weight:700;color:rgba(13,31,29,.035);pointer-events:none;
}
.hero-inner{padding:76px 0 56px;position:relative;z-index:2;}
.hero-eyebrow{
  display:inline-flex;align-items:center;gap:9px;font-family:var(--font-mono);font-size:12px;
  letter-spacing:.08em;color:var(--accent);font-weight:600;margin-bottom:20px;
}
.hero-eyebrow::before{content:"";width:26px;height:1px;background:var(--accent);display:block;}
.hero-title{
  font-size:50px;line-height:1.14;font-weight:800;color:var(--ink);letter-spacing:-.02em;
  max-width:640px;
}
.hero-sub{margin-top:20px;font-size:18px;color:var(--ink-soft);max-width:560px;}
.hero-actions{margin-top:32px;display:flex;flex-wrap:wrap;align-items:center;gap:20px;}
.hero-visual{
  position:relative;border-radius:var(--radius-card);overflow:hidden;
  border:1px solid var(--line);box-shadow:var(--shadow-1);background:var(--paper-2);
}
.hero-visual img{width:100%;aspect-ratio:4/3;object-fit:cover;transition:transform .5s var(--ease);}
.hero-visual:hover img{transform:scale(1.03);}
.hero-visual figcaption{
  position:absolute;left:14px;bottom:14px;background:rgba(13,31,29,.88);color:#fff;
  font-size:13px;padding:7px 13px;border-radius:999px;font-weight:500;
}
.hero-anchor{
  margin-top:52px;border-top:1px solid var(--line);padding-top:18px;
  display:flex;flex-wrap:wrap;gap:28px;
}
.hero-anchor a{
  font-family:var(--font-mono);font-size:12.5px;letter-spacing:.06em;color:var(--muted);
  display:inline-flex;align-items:center;gap:7px;transition:color .18s;
}
.hero-anchor a span{color:var(--accent);}
.hero-anchor a:hover{color:var(--ink);}

/* ---------- 数据条 ---------- */
.stats{border-bottom:1px solid var(--line);background:var(--paper-2);}
.stats-grid{display:grid;grid-template-columns:repeat(4,1fr);}
.stat{padding:32px 26px;border-right:1px solid var(--line);}
.stat:last-child{border-right:none;}
.stat-num{font-family:var(--font-mono);font-size:30px;font-weight:700;color:var(--ink);line-height:1.2;}
.stat-num em{font-style:normal;font-size:15px;color:var(--accent);margin-left:3px;}
.stat-label{margin-top:6px;font-size:14px;color:var(--muted);}

/* ---------- 合集目录 ---------- */
.collection-index{border-top:1px solid var(--line);}
.collection-row{
  display:grid;grid-template-columns:76px 1fr auto 40px;align-items:center;gap:20px;
  padding:24px 16px;border-bottom:1px solid var(--line);
  transition:background .18s var(--ease);
}
.collection-row:hover{background:var(--paper-2);}
.collection-row:hover .collection-num{color:var(--accent);}
.collection-row:hover .collection-arrow{transform:translateX(4px);color:var(--accent);}
.collection-num{font-family:var(--font-mono);font-size:13px;letter-spacing:.08em;color:var(--muted);font-weight:600;transition:color .18s;}
.collection-name{font-size:19px;font-weight:600;color:var(--ink);}
.collection-note{font-size:14.5px;color:var(--muted);margin-top:4px;}
.collection-count{font-family:var(--font-mono);font-size:12px;letter-spacing:.06em;color:var(--muted);border:1px solid var(--line);border-radius:999px;height:22px;display:inline-flex;align-items:center;padding:0 10px;}
.collection-arrow{color:var(--muted);transition:transform .18s var(--ease),color .18s;}

/* ---------- 精选条目 ---------- */
.entry-card{
  background:var(--paper-2);border:1px solid var(--line);border-radius:var(--radius-card);
  overflow:hidden;transition:transform .2s var(--ease),box-shadow .2s var(--ease),border-color .2s var(--ease);
  display:block;height:100%;
}
.entry-card:hover{transform:translateY(-2px);box-shadow:var(--shadow-2);border-color:rgba(232,98,47,.35);}
.entry-media{overflow:hidden;background:var(--paper);}
.entry-media img{width:100%;object-fit:cover;transition:transform .5s var(--ease);}
.entry-card:hover .entry-media img{transform:scale(1.03);}
.entry-body{padding:22px 24px 24px;}
.entry-title{font-size:21px;line-height:1.4;font-weight:700;color:var(--ink);}
.entry-text{margin-top:10px;font-size:15px;color:var(--muted);}
.entry-meta{margin-top:16px;display:flex;flex-wrap:wrap;align-items:center;gap:12px;}
.entry-meta time{font-family:var(--font-mono);font-size:12.5px;color:var(--muted);letter-spacing:.04em;}
.entry-card--big .entry-media img{aspect-ratio:16/10;}
.entry-card--big .entry-title{font-size:25px;}
.entry-card--small{display:grid;grid-template-columns:170px 1fr;}
.entry-card--small .entry-media img{aspect-ratio:1/1;height:100%;}
.entry-card--small .entry-title{font-size:17.5px;}
.entry-card--small .entry-text{font-size:14.5px;}
.entry-stack{display:grid;gap:20px;height:100%;}

/* ---------- 使用路径 ---------- */
.path-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:24px;}
.path-card{
  background:var(--paper-2);border:1px solid var(--line);border-radius:var(--radius-card);
  padding:26px 24px;position:relative;transition:border-color .2s,box-shadow .2s,transform .2s var(--ease);
}
.path-card:hover{border-color:rgba(232,98,47,.35);box-shadow:var(--shadow-2);transform:translateY(-2px);}
.path-step{font-family:var(--font-mono);font-size:12px;letter-spacing:.08em;color:var(--accent);font-weight:600;}
.path-title{margin-top:12px;font-size:18.5px;font-weight:600;color:var(--ink);}
.path-text{margin-top:10px;font-size:15px;color:var(--muted);}

/* ---------- 最新信息（CMS 列表） ---------- */
.news-list{border-top:1px solid var(--line);}
.news-item{border-bottom:1px solid var(--line);transition:background .18s var(--ease);}
.news-item:hover{background:var(--paper-2);}
.news-link{display:grid;grid-template-columns:1fr 180px;gap:24px;padding:24px 16px;align-items:start;}
.news-title{font-size:18.5px;font-weight:600;color:var(--ink);line-height:1.5;}
.news-item:hover .news-title{color:var(--accent);}
.news-excerpt{
  margin-top:8px;font-size:14.5px;color:var(--muted);line-height:1.75;
  display:-webkit-box;-webkit-line-clamp:3;-webkit-box-orient:vertical;overflow:hidden;
}
.news-side{display:flex;flex-direction:column;align-items:flex-end;gap:10px;}
.news-side time{font-family:var(--font-mono);font-size:12.5px;letter-spacing:.04em;color:var(--muted);}
.empty-state{
  border:1px dashed var(--line);border-radius:var(--radius-card);background:var(--paper-2);
  padding:52px 24px;text-align:center;
}
.empty-state i{font-size:26px;color:var(--accent);}
.empty-state p{margin-top:14px;color:var(--muted);font-size:15.5px;}
.empty-state .btn{margin-top:20px;}

/* ---------- 横向滑动推荐 ---------- */
.scroller{
  display:flex;gap:20px;overflow-x:auto;padding:6px 4px 22px;
  scroll-snap-type:x mandatory;-webkit-overflow-scrolling:touch;
}
.scroller::-webkit-scrollbar{height:6px;}
.scroller::-webkit-scrollbar-thumb{background:var(--line);border-radius:999px;}
.mini-card{
  flex:0 0 260px;scroll-snap-align:start;background:var(--paper-2);
  border:1px solid var(--line);border-radius:var(--radius-card);overflow:hidden;
  transition:transform .2s var(--ease),box-shadow .2s var(--ease),border-color .2s;
}
.mini-card:hover{transform:translateY(-2px);box-shadow:var(--shadow-2);border-color:rgba(232,98,47,.35);}
.mini-card img{aspect-ratio:4/3;object-fit:cover;width:100%;}
.mini-body{padding:16px 18px 20px;}
.mini-title{
  font-size:15.5px;font-weight:600;color:var(--ink);line-height:1.55;
  display:-webkit-box;-webkit-line-clamp:2;-webkit-box-orient:vertical;overflow:hidden;
}
.mini-body span{display:inline-block;margin-top:12px;}

/* ---------- 评价 ---------- */
.quote-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:22px;}
.quote{
  background:var(--ink);color:rgba(255,255,255,.84);border-radius:var(--radius-card);
  padding:28px 26px;display:flex;flex-direction:column;justify-content:space-between;
}
.quote:nth-child(2){background:#123330;}
.quote:nth-child(3){background:#0A1A18;}
.quote p{font-size:15.5px;line-height:1.85;}
.quote footer{margin-top:20px;padding-top:16px;border-top:1px solid rgba(255,255,255,.14);font-family:var(--font-mono);font-size:12px;letter-spacing:.06em;color:rgba(255,255,255,.55);}

/* ---------- FAQ ---------- */
.faq-wrap{max-width:820px;}
.faq-list{border-top:1px solid var(--line);background:transparent;}
.faq-list .accordion-item{border-bottom:1px solid var(--line);background:transparent;}
.faq-list .accordion-title{
  font-size:17px;font-weight:600;color:var(--ink);padding:22px 44px 22px 0;
  border:none;background:transparent;position:relative;transition:color .18s;
}
.faq-list .accordion-title:hover{color:var(--accent);}
.faq-list .accordion-title::before{
  content:"\f067";font-family:"Font Awesome 6 Free";font-weight:900;font-size:12px;
  position:absolute;right:6px;top:50%;transform:translateY(-50%);color:var(--accent);
}
.faq-list .accordion-item.is-active .accordion-title::before{content:"\f068";}
.faq-list .accordion-content{padding:0 40px 24px 0;color:var(--muted);font-size:15.5px;border:none;background:transparent;}

/* ---------- CTA 带 ---------- */
.cta-band{
  position:relative;overflow:hidden;border-radius:var(--radius-card);
  background-image:linear-gradient(90deg,rgba(13,31,29,.96),rgba(13,31,29,.86)),url('/assets/images/backpic/back-2.png');
  background-size:cover;background-position:center;color:#fff;
  padding:44px 40px;display:flex;flex-wrap:wrap;align-items:center;justify-content:space-between;gap:24px;
}
.cta-band h2{font-size:24px;font-weight:700;color:#fff;line-height:1.4;}
.cta-band p{margin-top:8px;font-size:15px;color:rgba(255,255,255,.7);max-width:520px;}
.cta-actions{display:flex;flex-wrap:wrap;gap:14px;}
.btn--light{background:#fff;color:var(--ink);}
.btn--light:hover{filter:brightness(.94);color:var(--ink);}
.btn--outline{border-color:rgba(255,255,255,.5);color:#fff;background:transparent;border-radius:10px;}
.btn--outline:hover{background:#fff;color:var(--ink);border-color:#fff;}

/* ---------- 弹窗 ---------- */
.reveal{
  border-radius:var(--radius-card);border:1px solid var(--line);box-shadow:var(--shadow-2);
  background:var(--paper-2);padding:30px;
}
.reveal h3{font-size:19px;font-weight:700;color:var(--ink);}
.reveal p{margin-top:12px;font-size:15px;color:var(--muted);}
.reveal .copy-box{
  margin-top:18px;display:flex;gap:10px;align-items:center;border:1px solid var(--line);
  border-radius:10px;padding:10px 12px;background:var(--paper);
}
.reveal .copy-box code{font-family:var(--font-mono);font-size:13px;color:var(--ink-soft);flex:1;word-break:break-all;}

/* ---------- 页脚 ---------- */
.site-footer{background:var(--ink);color:rgba(255,255,255,.7);margin-top:auto;}
.footer-grid{
  display:grid;grid-template-columns:1.4fr 1fr 1fr 1fr;gap:36px;
  padding:64px 0 44px;
}
.footer-brand{display:flex;align-items:center;gap:11px;}
.footer-brand .brand-mark{width:32px;height:32px;font-size:14px;}
.footer-brand strong{color:#fff;font-size:16.5px;}
.footer-about{margin-top:16px;font-size:14px;line-height:1.8;max-width:280px;color:rgba(255,255,255,.6);}
.footer-col h4{
  font-family:var(--font-mono);font-size:12px;letter-spacing:.08em;text-transform:uppercase;
  color:var(--accent);font-weight:600;margin-bottom:16px;
}
.footer-col li{margin-bottom:10px;}
.footer-col a{font-size:14.5px;color:rgba(255,255,255,.72);transition:color .18s;}
.footer-col a:hover{color:var(--accent);}
.footer-col p{font-size:14px;color:rgba(255,255,255,.6);line-height:1.8;}
.footer-bottom{
  border-top:1px solid rgba(255,255,255,.12);padding:20px 0 30px;
  display:flex;flex-wrap:wrap;gap:12px;justify-content:space-between;align-items:center;
  font-size:13px;color:rgba(255,255,255,.5);
}
.footer-bottom .mono{font-family:var(--font-mono);letter-spacing:.04em;}

/* ---------- 动效 ---------- */
.reveal-on-scroll{opacity:0;transform:translateY(12px);transition:opacity .4s var(--ease),transform .4s var(--ease);}
.reveal-on-scroll.is-in{opacity:1;transform:none;}
@media (prefers-reduced-motion:reduce){
  *{animation:none !important;transition:none !important;}
  .reveal-on-scroll{opacity:1;transform:none;}
  html{scroll-behavior:auto;}
}

/* ---------- 响应式 ---------- */
@media (max-width:1279px){
  .hero-title{font-size:44px;}
}
@media (max-width:1023px){
  .side-nav{
    width:280px;transform:translateX(-100%);
    transition:transform .24s var(--ease);box-shadow:var(--shadow-2);
  }
  .side-nav.is-open{transform:translateX(0);}
  .main-col{margin-left:0;padding-top:56px;}
  .topbar{
    display:flex;align-items:center;justify-content:space-between;
    position:fixed;top:0;left:0;right:0;height:56px;padding:0 16px;
    background:var(--ink);z-index:50;border-bottom:1px solid rgba(255,255,255,.1);
  }
  .topbar-brand{color:#fff;font-weight:700;font-size:15.5px;letter-spacing:.01em;}
  .topbar-btn{
    width:38px;height:38px;border-radius:9px;border:1px solid rgba(255,255,255,.18);
    background:transparent;color:#fff;display:grid;place-items:center;cursor:pointer;
  }
  .topbar-btn:hover{color:var(--accent);border-color:rgba(232,98,47,.5);}
  .hero-title{font-size:38px;}
  .hero-inner{padding:52px 0 44px;}
  .section{padding:64px 0;}
  .stats-grid{grid-template-columns:repeat(2,1fr);}
  .stat:nth-child(2){border-right:none;}
  .stat:nth-child(1),.stat:nth-child(2){border-bottom:1px solid var(--line);}
  .path-grid{grid-template-columns:1fr;}
  .quote-grid{grid-template-columns:1fr;}
  .footer-grid{grid-template-columns:1fr 1fr;gap:30px;}
  .entry-card--small{grid-template-columns:150px 1fr;}
}
@media (max-width:767px){
  .container{padding:0 20px;}
  .hero-title{font-size:31px;}
  .hero-sub{font-size:16.5px;}
  .section-title{font-size:23px;}
  .collection-row{grid-template-columns:52px 1fr 34px;gap:14px;padding:20px 8px;}
  .collection-count{display:none;}
  .collection-name{font-size:17px;}
  .entry-card--small{grid-template-columns:1fr;}
  .entry-card--small .entry-media img{aspect-ratio:16/9;}
  .news-link{grid-template-columns:1fr;gap:12px;padding:20px 8px;}
  .news-side{flex-direction:row;align-items:center;justify-content:space-between;width:100%;}
  .cta-band{padding:32px 24px;}
  .cta-band h2{font-size:20px;}
  .footer-grid{grid-template-columns:1fr;gap:28px;padding:48px 0 32px;}
  .footer-bottom{flex-direction:column;align-items:flex-start;}
  .stats-grid{grid-template-columns:1fr;}
  .stat{border-right:none;border-bottom:1px solid var(--line);}
  .stat:last-child{border-bottom:none;}
  .hero-anchor{gap:16px;}
  .reveal{padding:22px;}
}

/* roulang page: article */
:root{
  --ink:#0D1F1D;
  --ink-soft:#2B3330;
  --paper:#F6F3EE;
  --paper-2:#FFFFFF;
  --accent:#E8622F;
  --accent-ink:#0D1F1D;
  --line:#E3DED6;
  --muted:#7C8580;
  --radius-card:12px;
  --radius-img:10px;
  --radius-input:10px;
  --shadow-1:0 1px 2px rgba(13,31,29,.05);
  --shadow-2:0 12px 28px rgba(13,31,29,.10);
  --side-w:236px;
  --top-h:56px;
  --ease:cubic-bezier(.22,.61,.36,1);
  --font-sans:"PingFang SC","HarmonyOS Sans SC","Microsoft YaHei",system-ui,-apple-system,"Segoe UI",sans-serif;
  --font-mono:"SFMono-Regular",SFMono,"JetBrains Mono",Consolas,"Liberation Mono",monospace;
}
*,*::before,*::after{box-sizing:border-box}
html{-webkit-text-size-adjust:100%;scroll-behavior:smooth}
body{
  margin:0;
  background:var(--paper);
  color:var(--ink-soft);
  font-family:var(--font-sans);
  font-size:16.5px;
  line-height:1.85;
  -webkit-font-smoothing:antialiased;
}
img{max-width:100%;height:auto;display:block}
a{color:inherit;text-decoration:none;transition:color .18s var(--ease)}
a:hover{color:var(--accent)}
button{font-family:inherit;cursor:pointer}
h1,h2,h3,h4{margin:0;color:var(--ink);font-weight:700;line-height:1.25}
p{margin:0 0 16px}
ul,ol{margin:0;padding:0;list-style:none}
:focus-visible{outline:2px solid var(--accent);outline-offset:3px}
.skip-link{position:absolute;left:-9999px;top:0;background:var(--ink);color:#fff;padding:10px 16px;z-index:200}
.skip-link:focus{left:8px;top:8px}

/* ---------- 移动端顶栏 ---------- */
.topbar{
  display:none;
  position:fixed;
  top:0;left:0;right:0;
  height:var(--top-h);
  align-items:center;
  justify-content:space-between;
  padding:0 10px;
  background:var(--ink);
  color:#fff;
  z-index:90;
  box-shadow:0 1px 0 rgba(255,255,255,.06);
}
.topbar-btn{
  width:42px;height:42px;
  display:grid;place-items:center;
  background:transparent;
  border:0;
  border-radius:10px;
  color:rgba(255,255,255,.85);
  font-size:17px;
  transition:color .18s var(--ease),background .18s var(--ease);
}
.topbar-btn:hover,.topbar-btn:focus-visible{color:var(--accent);background:rgba(255,255,255,.08)}
.topbar-brand{font-size:16px;font-weight:800;letter-spacing:.02em;color:#fff}

/* ---------- 左侧 App Shell ---------- */
.side-nav{
  position:fixed;
  top:0;left:0;bottom:0;
  width:var(--side-w);
  background:var(--ink);
  color:rgba(255,255,255,.72);
  display:flex;
  flex-direction:column;
  z-index:80;
}
.brand{
  height:88px;
  display:flex;
  align-items:center;
  padding:0 20px;
  border-bottom:1px solid rgba(255,255,255,.08);
}
.brand-link{display:flex;align-items:center;gap:10px}
.brand-mark{
  width:34px;height:34px;
  flex:0 0 34px;
  border-radius:9px;
  background:var(--accent);
  color:var(--accent-ink);
  display:grid;place-items:center;
  font-weight:800;
  font-size:16px;
}
.brand-text{
  display:flex;flex-direction:column;
  color:#fff;font-size:15px;font-weight:700;line-height:1.15;
}
.brand-text em{
  font-style:normal;
  font-family:var(--font-mono);
  font-size:10.5px;
  letter-spacing:.08em;
  color:rgba(255,255,255,.45);
  margin-top:4px;
}
.side-menu{flex:1 1 auto;padding:14px 0;overflow-y:auto}
.menu-label{
  padding:0 20px 10px;
  font-family:var(--font-mono);
  font-size:11px;
  letter-spacing:.12em;
  color:rgba(255,255,255,.35);
  text-transform:uppercase;
}
.menu-item{
  position:relative;
  display:flex;
  align-items:center;
  gap:11px;
  height:46px;
  padding:0 20px;
  font-size:15px;
  font-weight:600;
  color:rgba(255,255,255,.74);
  transition:background .18s var(--ease),color .18s var(--ease);
}
.menu-item i{width:18px;text-align:center;font-size:14px;opacity:.8}
.menu-item:hover{background:rgba(255,255,255,.06);color:#fff}
.menu-item.is-active{color:#fff;background:rgba(255,255,255,.06)}
.menu-item.is-active::before{
  content:"";position:absolute;left:0;top:0;bottom:0;width:3px;background:var(--accent);
}
.side-foot{
  display:flex;gap:10px;
  padding:16px 20px;
  border-top:1px solid rgba(255,255,255,.08);
}
.icon-btn{
  flex:1 1 0;
  display:flex;align-items:center;justify-content:center;gap:7px;
  height:38px;
  border:1px solid rgba(255,255,255,.16);
  border-radius:999px;
  background:transparent;
  color:rgba(255,255,255,.75);
  font-size:13px;
  transition:color .18s var(--ease),border-color .18s var(--ease),background .18s var(--ease);
}
.icon-btn:hover{color:var(--accent);border-color:var(--accent);background:rgba(255,255,255,.05)}
.nav-mask{
  display:none;
  position:fixed;inset:0;
  background:rgba(13,31,29,.5);
  z-index:70;
}

/* ---------- 主区域 ---------- */
.app-main{margin-left:var(--side-w);display:flex;flex-direction:column;min-height:100vh}
.main-col{flex:1 1 auto;width:100%;max-width:1200px;padding:40px 32px 88px;margin:0 auto}
.article-wrap{max-width:740px;margin:0 auto}

/* ---------- 文章头部 / Hero ---------- */
.article-hero{
  position:relative;
  border:1px solid var(--line);
  border-radius:var(--radius-card);
  background-color:var(--paper-2);
  background-image:linear-gradient(180deg,rgba(246,243,238,.86),rgba(246,243,238,.97)),url('/assets/images/backpic/back-1.webp');
  background-size:cover;
  background-position:center;
  padding:32px 32px 28px;
  margin-bottom:40px;
  box-shadow:var(--shadow-1);
  animation:fadeUp .4s var(--ease) both;
}
.breadcrumb{
  display:flex;flex-wrap:wrap;align-items:center;gap:8px;
  font-family:var(--font-mono);
  font-size:12px;
  letter-spacing:.06em;
  color:var(--muted);
  margin-bottom:18px;
}
.breadcrumb a{color:var(--muted)}
.breadcrumb a:hover{color:var(--accent)}
.breadcrumb .sep{opacity:.6}
.breadcrumb .current{color:var(--ink);max-width:100%;overflow:hidden;text-overflow:ellipsis;white-space:nowrap}
.badge{
  display:inline-flex;align-items:center;gap:6px;
  height:22px;
  padding:0 11px;
  border:1px solid var(--line);
  border-radius:999px;
  background:var(--paper);
  color:var(--ink);
  font-family:var(--font-mono);
  font-size:12px;
  letter-spacing:.06em;
  transition:background .18s var(--ease),border-color .18s var(--ease),color .18s var(--ease);
}
.badge:hover{background:rgba(232,98,47,.12);border-color:rgba(232,98,47,.4);color:var(--accent)}
.article-hero h1{
  font-size:clamp(30px,3.4vw,46px);
  font-weight:800;
  line-height:1.18;
  letter-spacing:-.01em;
  margin:16px 0 18px;
}
.article-meta{
  display:flex;flex-wrap:wrap;align-items:center;gap:12px;
  font-family:var(--font-mono);
  font-size:12.5px;
  letter-spacing:.04em;
  color:var(--muted);
}
.article-meta .meta-item{display:inline-flex;align-items:center;gap:6px}
.article-meta .meta-item i{color:var(--accent);font-size:12px}
.article-meta .dot{width:4px;height:4px;border-radius:50%;background:var(--line)}

/* ---------- 封面与正文 ---------- */
.article-cover{
  border-radius:var(--radius-img);
  overflow:hidden;
  border:1px solid var(--line);
  margin-bottom:32px;
  box-shadow:var(--shadow-1);
}
.article-cover img{width:100%;aspect-ratio:16/9;object-fit:cover}
.article-body{font-size:17px;line-height:1.9;color:var(--ink-soft)}
.article-body > *:first-child{margin-top:0}
.article-body p{margin:0 0 18px}
.article-body h2{
  font-size:28px;
  font-weight:700;
  margin:40px 0 16px;
  padding-left:14px;
  border-left:3px solid var(--accent);
  line-height:1.35;
}
.article-body h3{font-size:20px;font-weight:600;margin:30px 0 12px}
.article-body ul,.article-body ol{margin:0 0 20px;padding-left:0}
.article-body ul li,.article-body ol li{
  position:relative;
  padding-left:22px;
  margin-bottom:10px;
}
.article-body ul li::before{
  content:"";position:absolute;left:2px;top:13px;
  width:6px;height:6px;border-radius:50%;background:var(--accent);
}
.article-body ol{counter-reset:item}
.article-body ol li{counter-increment:item;padding-left:30px}
.article-body ol li::before{
  content:counter(item,decimal-leading-zero);
  position:absolute;left:0;top:0;
  font-family:var(--font-mono);
  font-size:12px;
  color:var(--accent);
  letter-spacing:.06em;
}
.article-body blockquote{
  margin:26px 0;
  padding:14px 20px;
  background:var(--paper-2);
  border-left:3px solid var(--accent);
  border-radius:0 10px 10px 0;
  color:var(--ink);
}
.article-body blockquote p:last-child{margin-bottom:0}
.article-body img{
  border-radius:var(--radius-img);
  margin:24px auto;
  box-shadow:var(--shadow-1);
}
.article-body a{
  color:var(--ink);
  border-bottom:1px solid rgba(232,98,47,.5);
}
.article-body a:hover{color:var(--accent);border-bottom-color:var(--accent)}
.article-body strong{color:var(--ink)}
.article-body hr{border:0;border-top:1px solid var(--line);margin:36px 0}
.article-body code{
  font-family:var(--font-mono);
  font-size:14px;
  background:var(--paper);
  border:1px solid var(--line);
  border-radius:6px;
  padding:2px 6px;
}
.article-body table{width:100%;border-collapse:collapse;margin:24px 0;font-size:15px}
.article-body th,.article-body td{
  padding:11px 14px;border-bottom:1px solid var(--line);text-align:left;
}
.article-body th{color:var(--ink);font-weight:600;background:var(--paper)}

/* 空态 */
.article-empty{
  border:1px dashed var(--line);
  border-radius:var(--radius-card);
  background:var(--paper-2);
  padding:56px 28px;
  text-align:center;
}
.article-empty i{font-size:30px;color:var(--accent)}
.article-empty h2{font-size:22px;margin:14px 0 10px}
.article-empty p{color:var(--muted);max-width:420px;margin:0 auto 22px}

/* ---------- 标签 ---------- */
.tag-row{
  display:flex;flex-wrap:wrap;gap:10px;
  margin-top:40px;
  padding-top:24px;
  border-top:1px solid var(--line);
}
.tag{
  display:inline-flex;align-items:center;
  height:30px;padding:0 14px;
  border:1px solid var(--line);
  border-radius:999px;
  background:var(--paper-2);
  font-size:13px;
  color:var(--ink-soft);
  transition:border-color .18s var(--ease),color .18s var(--ease),transform .18s var(--ease);
}
.tag:hover{color:var(--accent);border-color:rgba(232,98,47,.45);transform:translateY(-2px)}

/* ---------- 相关推荐 ---------- */
.section{margin-top:56px}
.section-head{
  display:flex;align-items:baseline;justify-content:space-between;gap:16px;
  margin-bottom:18px;
}
.section-head h2{font-size:22px}
.section-head .label{
  font-family:var(--font-mono);
  font-size:11.5px;
  letter-spacing:.1em;
  color:var(--muted);
}
.rel-list{border-top:1px solid var(--line)}
.rel-item{
  display:flex;align-items:center;gap:16px;
  padding:18px 4px;
  border-bottom:1px solid var(--line);
  transition:background .18s var(--ease);
}
.rel-item:hover{background:var(--paper-2);color:var(--accent)}
.rel-item .idx{
  font-family:var(--font-mono);
  font-size:12px;
  color:var(--muted);
  letter-spacing:.08em;
  flex:0 0 26px;
}
.rel-item .rel-text{flex:1 1 auto;min-width:0}
.rel-item .rel-text strong{display:block;color:var(--ink);font-size:16.5px;font-weight:600}
.rel-item .rel-text span{font-size:13px;color:var(--muted)}
.rel-item .arrow{color:var(--accent);transition:transform .18s var(--ease)}
.rel-item:hover .arrow{transform:translateX(4px)}

/* ---------- CTA 带 ---------- */
.cta-band{
  margin-top:56px;
  display:flex;flex-wrap:wrap;align-items:center;justify-content:space-between;gap:20px;
  padding:26px 28px;
  border:1px solid var(--line);
  border-radius:var(--radius-card);
  background:var(--paper-2);
  box-shadow:var(--shadow-1);
}
.cta-band p{margin:0;font-size:16px;color:var(--ink)}
.cta-band .hint{font-size:13px;color:var(--muted);margin-top:6px}
.cta-actions{display:flex;flex-wrap:wrap;gap:12px}
.btn{
  display:inline-flex;align-items:center;gap:8px;
  height:46px;padding:0 26px;
  border-radius:999px;
  border:1px solid transparent;
  font-size:15px;font-weight:600;
  transition:background .18s var(--ease),color .18s var(--ease),border-color .18s var(--ease),transform .12s var(--ease),box-shadow .2s var(--ease);
}
.btn-primary{background:var(--accent);color:var(--accent-ink)}
.btn-primary:hover{background:#d9551f;color:var(--accent-ink);box-shadow:var(--shadow-2)}
.btn-primary:active{transform:translateY(1px)}
.btn-ghost{background:transparent;border-color:var(--ink);color:var(--ink)}
.btn-ghost:hover{background:var(--ink);color:var(--paper)}
.btn-ghost:active{transform:translateY(1px)}
.btn i{font-size:13px}
.link-inline{
  color:var(--ink);
  border-bottom:1px solid rgba(232,98,47,.5);
  padding-bottom:2px;
  font-weight:600;
}
.link-inline:hover{color:var(--accent)}

/* ---------- 返回入口 ---------- */
.back-row{
  display:flex;flex-wrap:wrap;gap:24px;
  margin-top:40px;
  font-size:14px;
  color:var(--muted);
}

/* ---------- 页脚 ---------- */
.site-footer{
  background:var(--ink);
  color:rgba(255,255,255,.62);
  padding:56px 32px 24px;
  font-size:14px;
}
.footer-grid{
  max-width:1200px;margin:0 auto;
  display:grid;
  grid-template-columns:1.4fr 1fr 1fr 1fr;
  gap:32px;
}
.footer-col h3{
  font-family:var(--font-mono);
  font-size:12px;
  letter-spacing:.1em;
  color:var(--accent);
  font-weight:600;
  margin-bottom:14px;
}
.footer-logo{color:#fff;font-size:17px;font-weight:800}
.footer-desc{margin:12px 0 0;max-width:300px;line-height:1.75}
.footer-note{
  margin:14px 0 0;
  font-family:var(--font-mono);
  font-size:11.5px;
  letter-spacing:.08em;
  color:rgba(255,255,255,.4);
}
.footer-col ul li{margin-bottom:10px}
.footer-col ul a{color:rgba(255,255,255,.62)}
.footer-col ul a:hover{color:var(--accent)}
.footer-bottom{
  max-width:1200px;margin:36px auto 0;
  padding-top:18px;
  border-top:1px solid rgba(255,255,255,.1);
  display:flex;flex-wrap:wrap;justify-content:space-between;gap:10px;
  font-family:var(--font-mono);
  font-size:11.5px;
  letter-spacing:.06em;
  color:rgba(255,255,255,.42);
}

/* ---------- 提示条 ---------- */
.toast{
  position:fixed;
  left:50%;bottom:32px;
  transform:translate(-50%,20px);
  background:var(--ink);
  color:#fff;
  padding:12px 22px;
  border-radius:999px;
  font-size:14px;
  opacity:0;
  pointer-events:none;
  transition:opacity .24s var(--ease),transform .24s var(--ease);
  z-index:150;
  box-shadow:var(--shadow-2);
}
.toast.is-show{opacity:1;transform:translate(-50%,0)}

@keyframes fadeUp{
  from{opacity:0;transform:translateY(12px)}
  to{opacity:1;transform:translateY(0)}
}
@media (prefers-reduced-motion:reduce){
  *{animation:none !important;transition:none !important}
}

/* ---------- 响应式 ---------- */
@media (max-width:1279px){
  .main-col{max-width:1040px}
}
@media (max-width:1023px){
  .topbar{display:flex}
  .side-nav{
    transform:translateX(-100%);
    transition:transform .24s var(--ease);
    box-shadow:var(--shadow-2);
  }
  body.nav-open .side-nav{transform:translateX(0)}
  body.nav-open .nav-mask{display:block}
  .app-main{margin-left:0;padding-top:var(--top-h)}
  .main-col{padding:28px 20px 64px}
  .article-hero{padding:24px 22px}
  .footer-grid{grid-template-columns:1fr 1fr;gap:26px}
}
@media (max-width:640px){
  body{font-size:16px}
  .article-hero h1{font-size:30px}
  .article-body{font-size:16.5px}
  .article-body h2{font-size:23px;margin-top:32px}
  .article-body h3{font-size:19px}
  .cta-band{padding:22px 20px;flex-direction:column;align-items:flex-start}
  .cta-actions{width:100%}
  .btn{flex:1 1 auto;justify-content:center;padding:0 18px}
  .footer-grid{grid-template-columns:1fr}
  .site-footer{padding:44px 20px 20px}
  .rel-item .rel-text strong{font-size:15.5px}
}

/* roulang page: category1 */
:root{
  --ink:#0D1F1D;
  --ink-soft:#2B3330;
  --paper:#F6F3EE;
  --paper-2:#FFFFFF;
  --accent:#E8622F;
  --accent-ink:#0D1F1D;
  --line:#E3DED6;
  --muted:#7C8580;
  --danger:#B4341F;
  --radius-card:12px;
  --radius-img:10px;
  --shadow-1:0 1px 2px rgba(13,31,29,.05);
  --shadow-2:0 12px 28px rgba(13,31,29,.10);
  --sidebar-w:236px;
  --mono:"SFMono-Regular",SFMono,Menlo,Consolas,"JetBrains Mono","Liberation Mono",monospace;
  --sans:"PingFang SC","HarmonyOS Sans SC","Microsoft YaHei",system-ui,-apple-system,"Segoe UI",Roboto,sans-serif;
}
*,*::before,*::after{box-sizing:border-box;}
html{-webkit-text-size-adjust:100%;}
body{
  margin:0;
  font-family:var(--sans);
  font-size:16.5px;
  line-height:1.85;
  color:var(--ink-soft);
  background:var(--paper);
}
img{max-width:100%;display:block;border-radius:var(--radius-img);}
a{color:inherit;text-decoration:none;transition:color .18s ease;}
a:hover,a:focus{color:var(--accent);}
button{font-family:inherit;cursor:pointer;border:0;background:none;color:inherit;}
input{font-family:inherit;}
ul,ol{margin:0;padding:0;list-style:none;}
h1,h2,h3,h4{margin:0;color:var(--ink);letter-spacing:-.01em;}
p{margin:0 0 16px;}
p:last-child{margin-bottom:0;}
.mono{font-family:var(--mono);letter-spacing:.06em;}
.no-scroll{overflow:hidden;}
:focus-visible{outline:2px solid var(--accent);outline-offset:3px;border-radius:4px;}

/* ------- 布局骨架 ------- */
.app-shell{display:flex;min-height:100vh;}
.side-nav{
  position:fixed;top:0;left:0;bottom:0;width:var(--sidebar-w);
  background:var(--ink);color:rgba(246,243,238,.82);
  display:flex;flex-direction:column;z-index:70;
}
.side-brand{
  height:88px;display:flex;flex-direction:column;justify-content:center;
  padding:0 24px;border-bottom:1px solid rgba(246,243,238,.10);
}
.side-logo{font-size:19px;font-weight:800;color:#F6F3EE;letter-spacing:.02em;}
.side-sub{font-family:var(--mono);font-size:11px;letter-spacing:.12em;color:rgba(246,243,238,.52);margin-top:4px;}
.side-links{padding:18px 12px;display:flex;flex-direction:column;gap:2px;overflow-y:auto;}
.side-link{
  display:flex;align-items:center;gap:12px;
  padding:0 14px;height:46px;border-radius:8px;
  font-size:15px;font-weight:600;color:rgba(246,243,238,.76);
  position:relative;transition:background .18s ease,color .18s ease;
}
.side-link i{width:16px;font-size:13px;color:rgba(246,243,238,.45);}
.side-link:hover{background:rgba(255,255,255,.06);color:#F6F3EE;}
.side-link:hover i{color:var(--accent);}
.side-link.is-active{background:rgba(255,255,255,.06);color:#F6F3EE;}
.side-link.is-active::before{
  content:"";position:absolute;left:0;top:10px;bottom:10px;width:3px;
  background:var(--accent);border-radius:0 3px 3px 0;
}
.side-link.is-active i{color:var(--accent);}
.side-foot{
  margin-top:auto;padding:18px 24px 24px;border-top:1px solid rgba(246,243,238,.10);
  display:flex;gap:12px;
}
.icon-btn{
  width:38px;height:38px;border-radius:999px;border:1px solid rgba(246,243,238,.20);
  display:inline-flex;align-items:center;justify-content:center;
  color:rgba(246,243,238,.75);transition:color .18s ease,border-color .18s ease,background .18s ease;
}
.icon-btn:hover{color:var(--accent);border-color:rgba(232,98,47,.5);background:rgba(232,98,47,.08);}

.main-col{margin-left:var(--sidebar-w);flex:1;min-width:0;display:flex;flex-direction:column;}
.container{width:100%;max-width:1200px;margin:0 auto;padding:0 32px;}

/* ------- 移动端顶栏与抽屉 ------- */
.topbar{
  display:none;position:fixed;top:0;left:0;right:0;height:56px;z-index:80;
  background:var(--ink);align-items:center;justify-content:space-between;
  padding:0 8px;box-shadow:var(--shadow-2);
}
.topbar-brand{font-size:16px;font-weight:700;color:#F6F3EE;letter-spacing:.02em;}
.topbar-btn{
  width:42px;height:42px;border-radius:8px;color:rgba(246,243,238,.85);
  display:inline-flex;align-items:center;justify-content:center;font-size:16px;
}
.topbar-btn:hover{color:var(--accent);}
.drawer-mask{
  position:fixed;inset:0;background:rgba(13,31,29,.5);opacity:0;visibility:hidden;
  transition:opacity .24s ease,visibility .24s ease;z-index:90;
}
.drawer-mask.is-open{opacity:1;visibility:visible;}
.drawer{
  position:fixed;top:0;left:0;bottom:0;width:280px;background:var(--ink);z-index:100;
  transform:translateX(-100%);transition:transform .24s cubic-bezier(.22,.61,.36,1);
  display:flex;flex-direction:column;padding:20px 14px;
}
.drawer.is-open{transform:translateX(0);}
.drawer-head{padding:6px 12px 20px;border-bottom:1px solid rgba(246,243,238,.10);margin-bottom:14px;}
.drawer-head strong{display:block;color:#F6F3EE;font-size:18px;font-weight:800;}
.drawer-head span{font-family:var(--mono);font-size:11px;letter-spacing:.12em;color:rgba(246,243,238,.5);}
.drawer .side-link{color:rgba(246,243,238,.78);}
.drawer-close{position:absolute;top:18px;right:14px;color:rgba(246,243,238,.7);width:36px;height:36px;border-radius:8px;}

/* ------- 通用组件 ------- */
.btn{
  display:inline-flex;align-items:center;gap:10px;height:46px;padding:0 26px;
  border-radius:999px;font-size:15px;font-weight:700;white-space:nowrap;
  transition:background .18s ease,color .18s ease,transform .12s ease,box-shadow .18s ease,border-color .18s ease;
}
.btn i{font-size:13px;transition:transform .18s ease;}
.btn-primary{background:var(--accent);color:var(--accent-ink);box-shadow:var(--shadow-1);}
.btn-primary:hover{background:#d9591f;color:var(--accent-ink);}
.btn-primary:hover i{transform:translateX(3px);}
.btn-primary:active{transform:translateY(1px);}
.btn-ghost{border:1px solid var(--ink);color:var(--ink);border-radius:10px;}
.btn-ghost:hover{background:var(--ink);color:var(--paper);}
.link-cta{
  font-size:15px;font-weight:600;color:var(--ink);
  text-decoration:underline;text-underline-offset:4px;text-decoration-thickness:1px;
}
.link-cta:hover{color:var(--accent);}
.badge{
  display:inline-flex;align-items:center;height:22px;padding:0 10px;border-radius:999px;
  font-family:var(--mono);font-size:11px;letter-spacing:.06em;
  background:rgba(13,31,29,.05);border:1px solid var(--line);color:var(--muted);
  transition:background .18s ease,color .18s ease,border-color .18s ease;
}
.badge:hover{background:rgba(232,98,47,.10);border-color:rgba(232,98,47,.35);color:var(--accent);}
.section{padding:88px 0;border-top:1px solid var(--line);}
.section:first-of-type{border-top:0;}
.section-head{margin-bottom:36px;}
.section-head .eyebrow{
  font-family:var(--mono);font-size:12px;letter-spacing:.14em;color:var(--accent);
  display:block;margin-bottom:10px;
}
.section-head h2{font-size:30px;font-weight:700;line-height:1.24;margin-bottom:10px;}
.section-head p{color:var(--muted);font-size:15.5px;max-width:720px;}

/* ------- 面包屑 ------- */
.crumbs{padding:30px 0 18px;font-size:13px;font-family:var(--mono);letter-spacing:.04em;color:var(--muted);}
.crumbs ol{display:flex;flex-wrap:wrap;gap:8px;align-items:center;}
.crumbs li::after{content:"/";margin-left:8px;color:var(--line);}
.crumbs li:last-child::after{content:"";}
.crumbs a:hover{color:var(--accent);}
.crumbs .current{color:var(--ink);}

/* ------- Hero ------- */
.hero{
  position:relative;border-radius:16px;overflow:hidden;color:#F6F3EE;
  padding:58px 52px 52px;
  background-image:linear-gradient(115deg,rgba(13,31,29,.94) 0%,rgba(13,31,29,.80) 52%,rgba(13,31,29,.62) 100%),url('/assets/images/backpic/back-1.webp');
  background-size:cover;background-position:center;
  box-shadow:var(--shadow-2);
}
.hero::after{
  content:"";position:absolute;right:-40px;top:-40px;width:280px;height:280px;
  border:1px solid rgba(246,243,238,.16);border-radius:50%;pointer-events:none;
}
.hero-brand{
  display:inline-block;font-family:var(--mono);font-size:12px;letter-spacing:.16em;
  color:var(--accent);margin-bottom:18px;
}
.hero h1{font-size:50px;font-weight:800;line-height:1.14;color:#F6F3EE;max-width:820px;}
.hero-sub{margin-top:18px;font-size:19px;line-height:1.7;color:rgba(246,243,238,.82);max-width:640px;}
.hero-actions{display:flex;flex-wrap:wrap;align-items:center;gap:22px;margin-top:32px;}
.hero .link-cta{color:rgba(246,243,238,.9);}
.hero .link-cta:hover{color:var(--accent);}
.hero-meta{display:flex;flex-wrap:wrap;gap:36px;margin-top:40px;padding-top:26px;border-top:1px solid rgba(246,243,238,.16);}
.hero-meta li{font-size:14px;color:rgba(246,243,238,.72);}
.hero-meta .mono{display:block;font-size:26px;color:#F6F3EE;font-weight:600;}

/* ------- 导语 + 锚点条 ------- */
.lead{padding:64px 0 0;}
.lead p{font-size:17.5px;line-height:1.9;max-width:860px;color:var(--ink-soft);}
.anchor-bar{
  display:flex;flex-wrap:wrap;gap:10px;margin-top:30px;padding:14px;
  background:var(--paper-2);border:1px solid var(--line);border-radius:var(--radius-card);
  box-shadow:var(--shadow-1);
}
.anchor-bar a{
  display:inline-flex;align-items:center;gap:8px;height:38px;padding:0 18px;border-radius:999px;
  font-size:14px;font-weight:600;color:var(--ink-soft);border:1px solid transparent;
  transition:background .18s ease,color .18s ease,border-color .18s ease;
}
.anchor-bar a:hover{background:rgba(232,98,47,.10);color:var(--accent);border-color:rgba(232,98,47,.3);}
.anchor-bar .mono{color:var(--muted);font-size:11px;}

/* ------- 条目列表 ------- */
.entry-list{border-top:1px solid var(--line);}
.entry-row{
  display:grid;grid-template-columns:76px minmax(0,1fr) 240px;gap:28px;align-items:center;
  padding:26px 22px;border-bottom:1px solid var(--line);border-radius:var(--radius-card);
  transition:background .2s ease,transform .2s ease,box-shadow .2s ease;
}
.entry-row:hover{background:var(--paper-2);box-shadow:var(--shadow-2);transform:translateY(-2px);}
.entry-num{font-family:var(--mono);font-size:24px;font-weight:600;color:var(--muted);transition:color .2s ease;}
.entry-row:hover .entry-num{color:var(--accent);}
.entry-body h3{font-size:21px;font-weight:600;margin-bottom:10px;line-height:1.4;}
.entry-body p{font-size:15.5px;color:var(--ink-soft);margin-bottom:14px;}
.entry-tags{display:flex;flex-wrap:wrap;gap:8px;}
.entry-thumb{
  width:240px;aspect-ratio:16/10;border-radius:var(--radius-img);overflow:hidden;
  border:1px solid var(--line);background:var(--paper);
}
.entry-thumb img{width:100%;height:100%;object-fit:cover;border-radius:0;transition:transform .5s ease;}
.entry-row:hover .entry-thumb img{transform:scale(1.03);}
.entry-more{display:inline-flex;align-items:center;gap:8px;font-size:14px;font-weight:600;color:var(--ink);}
.entry-more i{font-size:12px;transition:transform .18s ease;}
.entry-row:hover .entry-more i{transform:translateX(4px);color:var(--accent);}
.entry-row:hover .entry-more{color:var(--accent);}

/* ------- 流程 ------- */
.steps{padding:8px 0 0;}
.step-card{
  height:100%;background:var(--paper-2);border:1px solid var(--line);border-radius:var(--radius-card);
  padding:24px;transition:transform .2s ease,box-shadow .2s ease,border-color .2s ease;
}
.step-card:hover{transform:translateY(-2px);box-shadow:var(--shadow-2);border-color:rgba(232,98,47,.35);}
.step-card .mono{font-size:12px;letter-spacing:.12em;color:var(--accent);display:block;margin-bottom:12px;}
.step-card h3{font-size:19px;font-weight:600;margin-bottom:8px;}
.step-card p{font-size:15px;color:var(--ink-soft);margin:0;}

/* ------- 自检卡 ------- */
.check-grid{display:grid;grid-template-columns:repeat(3,minmax(0,1fr));gap:20px;}
.check-card{
  background:var(--paper-2);border:1px solid var(--line);border-radius:var(--radius-card);
  padding:26px;transition:transform .2s ease,box-shadow .2s ease,border-color .2s ease;
}
.check-card:hover{transform:translateY(-2px);box-shadow:var(--shadow-2);border-color:rgba(232,98,47,.35);}
.check-card .icon{
  width:44px;height:44px;border-radius:12px;background:rgba(232,98,47,.12);color:var(--accent);
  display:flex;align-items:center;justify-content:center;font-size:17px;margin-bottom:18px;
}
.check-card h3{font-size:19px;font-weight:600;margin-bottom:8px;}
.check-card p{font-size:15px;margin:0;}

/* ------- FAQ ------- */
.faq{max-width:800px;}
.faq details{
  background:var(--paper-2);border:1px solid var(--line);border-radius:var(--radius-card);
  padding:0 22px;margin-bottom:12px;transition:border-color .2s ease,box-shadow .2s ease;
}
.faq details[open]{border-color:rgba(232,98,47,.35);box-shadow:var(--shadow-1);}
.faq summary{
  list-style:none;cursor:pointer;padding:20px 0;font-size:17px;font-weight:600;color:var(--ink);
  display:flex;align-items:center;justify-content:space-between;gap:16px;
}
.faq summary::-webkit-details-marker{display:none;}
.faq summary::after{
  content:"+";font-family:var(--mono);font-size:18px;color:var(--accent);font-weight:600;
  transition:transform .2s ease;
}
.faq details[open] summary::after{transform:rotate(45deg);}
.faq .faq-body{padding:0 0 22px;font-size:15.5px;color:var(--ink-soft);}

/* ------- 相关分类 ------- */
.related{display:flex;flex-wrap:wrap;gap:12px;}
.related a{
  display:inline-flex;align-items:center;gap:10px;height:44px;padding:0 22px;border-radius:999px;
  background:var(--paper-2);border:1px solid var(--line);font-size:14.5px;font-weight:600;color:var(--ink);
  transition:background .18s ease,color .18s ease,border-color .18s ease,transform .18s ease;
}
.related a:hover{background:var(--ink);color:var(--paper);border-color:var(--ink);transform:translateY(-2px);}
.related a i{font-size:11px;color:var(--accent);}

/* ------- CTA 带 ------- */
.cta-band{
  background:var(--paper-2);border:1px solid var(--line);border-radius:16px;
  padding:44px 48px;display:flex;flex-wrap:wrap;align-items:center;justify-content:space-between;gap:26px;
}
.cta-band h2{font-size:26px;font-weight:700;margin-bottom:8px;}
.cta-band p{font-size:15.5px;color:var(--muted);margin:0;}
.cta-actions{display:flex;flex-wrap:wrap;gap:14px;}

/* ------- 页脚 ------- */
.site-footer{margin-top:96px;background:var(--ink);color:rgba(246,243,238,.72);padding:64px 0 28px;}
.footer-grid{display:grid;grid-template-columns:1.5fr 1fr 1fr 1fr;gap:36px;}
.footer-brand{font-size:19px;font-weight:800;color:#F6F3EE;margin-bottom:14px;}
.footer-note{font-size:14px;line-height:1.8;color:rgba(246,243,238,.6);max-width:280px;}
.footer-title{
  font-family:var(--mono);font-size:13px;letter-spacing:.1em;color:var(--accent);
  margin-bottom:18px;display:block;
}
.site-footer li{margin-bottom:10px;}
.site-footer a{font-size:14.5px;color:rgba(246,243,238,.72);}
.site-footer a:hover{color:var(--accent);}
.footer-bottom{
  margin-top:44px;padding-top:22px;border-top:1px solid rgba(246,243,238,.12);
  display:flex;flex-wrap:wrap;gap:12px;justify-content:space-between;
  font-family:var(--mono);font-size:12px;letter-spacing:.04em;color:rgba(246,243,238,.5);
}

/* ------- 弹窗 ------- */
.modal-mask{
  position:fixed;inset:0;background:rgba(13,31,29,.55);z-index:120;
  display:flex;align-items:center;justify-content:center;padding:20px;
  opacity:0;visibility:hidden;transition:opacity .2s ease,visibility .2s ease;
}
.modal-mask.is-open{opacity:1;visibility:visible;}
.modal-box{
  background:var(--paper-2);border-radius:14px;padding:28px;max-width:420px;width:100%;
  box-shadow:var(--shadow-2);
}
.modal-box h3{font-size:19px;margin-bottom:10px;}
.modal-box p{font-size:14.5px;color:var(--muted);}
.modal-actions{display:flex;gap:12px;margin-top:20px;flex-wrap:wrap;}
.copy-tip{font-size:13px;color:var(--accent);min-height:20px;margin-top:12px;}

/* ------- 入场动效 ------- */
.reveal{opacity:0;transform:translateY(12px);transition:opacity .4s cubic-bezier(.22,.61,.36,1),transform .4s cubic-bezier(.22,.61,.36,1);}
.reveal.is-in{opacity:1;transform:none;}

/* ------- 响应式 ------- */
@media (max-width:1279px){
  .hero h1{font-size:44px;}
}
@media (max-width:1023px){
  .side-nav{display:none;}
  .main-col{margin-left:0;padding-top:56px;}
  .topbar{display:flex;}
  .hero{padding:44px 32px 40px;border-radius:14px;}
  .hero h1{font-size:36px;}
  .hero-sub{font-size:17px;}
  .section{padding:64px 0;}
  .section-head h2{font-size:26px;}
  .check-grid{grid-template-columns:repeat(2,minmax(0,1fr));}
  .footer-grid{grid-template-columns:repeat(2,minmax(0,1fr));gap:30px;}
  .cta-band{padding:34px 30px;}
}
@media (max-width:767px){
  .container{padding:0 20px;}
  .hero h1{font-size:31px;}
  .hero{padding:36px 24px 32px;}
  .entry-row{grid-template-columns:52px minmax(0,1fr);row-gap:16px;padding:22px 14px;}
  .entry-num{font-size:20px;}
  .entry-thumb{grid-column:2;width:100%;aspect-ratio:16/9;}
  .entry-body h3{font-size:19px;}
  .hero-meta{gap:24px;}
  .hero-meta li{font-size:13px;}
  .hero-meta .mono{font-size:21px;}
  .section{padding:52px 0;}
  .section-head h2{font-size:23px;}
  .hero-actions{gap:16px;}
  .cta-band{padding:28px 22px;flex-direction:column;align-items:flex-start;}
  .cta-band h2{font-size:22px;}
  .footer-grid{grid-template-columns:1fr;}
  .related a{width:100%;justify-content:space-between;}
}
@media (max-width:520px){
  .check-grid{grid-template-columns:1fr;}
  .btn{width:100%;justify-content:center;}
  .hero-actions{flex-direction:column;align-items:stretch;}
  .anchor-bar{padding:10px;}
  .anchor-bar a{padding:0 14px;font-size:13.5px;}
}
@media (prefers-reduced-motion:reduce){
  *{transition:none !important;animation:none !important;}
  .reveal{opacity:1;transform:none;}
}

/* roulang page: category3 */
:root{
  --ink:#0D1F1D;
  --ink-soft:#2B3330;
  --paper:#F6F3EE;
  --paper-2:#FFFFFF;
  --accent:#E8622F;
  --accent-ink:#0D1F1D;
  --line:#E3DED6;
  --muted:#7C8580;
  --error:#B4341F;
  --sans:'PingFang SC','HarmonyOS Sans SC','Microsoft YaHei',system-ui,-apple-system,'Helvetica Neue',sans-serif;
  --mono:'SFMono-Regular','JetBrains Mono',Consolas,'Liberation Mono',monospace;
  --radius-card:12px;
  --radius-img:10px;
  --radius-pill:999px;
  --shadow-1:0 1px 2px rgba(13,31,29,.05);
  --shadow-2:0 12px 28px rgba(13,31,29,.10);
  --side-w:236px;
  --topbar-h:56px;
  --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-soft);
  font-family:var(--sans);
  font-size:16px;
  line-height:1.85;
  -webkit-font-smoothing:antialiased;
}
h1,h2,h3,h4,p,figure,blockquote{margin:0;}
ul,ol{margin:0;padding:0;list-style:none;}
img{max-width:100%;display:block;}
a{color:inherit;text-decoration:none;transition:color .18s var(--ease);}
a:hover{color:var(--accent);}
button{font:inherit;color:inherit;background:none;border:0;cursor:pointer;}
input{font:inherit;}
:focus-visible{outline:2px solid var(--accent);outline-offset:3px;border-radius:4px;}

.page-wrap{max-width:1200px;width:100%;margin:0 auto;padding:0 40px;}
.mono{font-family:var(--mono);letter-spacing:.04em;}

/* ============ 侧栏导航 ============ */
.side-nav{
  position:fixed;top:0;left:0;bottom:0;width:var(--side-w);
  background:var(--ink);display:flex;flex-direction:column;z-index:60;
  transition:transform .24s var(--ease);
}
.side-brand{
  height:88px;display:flex;align-items:center;padding:0 22px;
  border-bottom:1px solid rgba(246,243,238,.10);flex:0 0 auto;
}
.brand-link{display:flex;align-items:center;gap:12px;width:100%;}
.brand-link:hover{color:inherit;}
.brand-mark{
  width:34px;height:34px;border-radius:9px;background:var(--accent);color:var(--accent-ink);
  font-weight:800;font-size:17px;display:grid;place-items:center;flex:0 0 auto;
}
.brand-text{display:flex;flex-direction:column;color:var(--paper);font-size:16px;font-weight:700;line-height:1.2;}
.brand-text em{font-style:normal;font-family:var(--mono);font-size:10.5px;font-weight:500;letter-spacing:.08em;color:rgba(246,243,238,.5);margin-top:4px;}
.side-menu{flex:1 1 auto;overflow-y:auto;padding:18px 12px;display:flex;flex-direction:column;gap:2px;}
.menu-item{
  position:relative;display:flex;align-items:center;gap:10px;height:46px;padding:0 12px;
  border-radius:8px;color:rgba(246,243,238,.76);font-size:15px;font-weight:600;
  transition:background .18s var(--ease),color .18s var(--ease);
}
.menu-item i{width:16px;font-size:13px;opacity:.72;text-align:center;}
.menu-item:hover{background:rgba(255,255,255,.07);color:#FFFFFF;}
.menu-item:hover i{color:var(--accent);opacity:1;}
.menu-item.active{background:rgba(255,255,255,.06);color:#FFFFFF;}
.menu-item.active::before{
  content:"";position:absolute;left:-12px;top:9px;bottom:9px;width:3px;
  background:var(--accent);border-radius:0 3px 3px 0;
}
.side-foot{
  flex:0 0 auto;display:flex;gap:8px;padding:16px;
  border-top:1px solid rgba(246,243,238,.10);
}
.icon-btn{
  flex:1 1 0;height:40px;border-radius:8px;border:1px solid rgba(246,243,238,.16);
  color:rgba(246,243,238,.82);font-size:13px;font-weight:600;
  display:inline-flex;align-items:center;justify-content:center;gap:7px;
  transition:border-color .18s var(--ease),color .18s var(--ease),background .18s var(--ease);
}
.icon-btn:hover{color:var(--accent);border-color:rgba(232,98,47,.5);background:rgba(232,98,47,.08);}

/* ============ 移动端顶栏 ============ */
.topbar{
  display:none;position:fixed;top:0;left:0;right:0;height:var(--topbar-h);
  background:var(--ink);color:var(--paper);align-items:center;justify-content:space-between;
  padding:0 10px;z-index:70;
}
.topbar-btn{
  width:40px;height:40px;border-radius:8px;display:grid;place-items:center;
  color:var(--paper);font-size:16px;transition:background .18s var(--ease),color .18s var(--ease);
}
.topbar-btn:hover{background:rgba(255,255,255,.08);color:var(--accent);}
.topbar-brand{font-size:16px;font-weight:700;letter-spacing:.02em;}
.overlay{
  position:fixed;inset:0;background:rgba(13,31,29,.46);opacity:0;pointer-events:none;
  transition:opacity .24s var(--ease);z-index:55;
}
.overlay.show{opacity:1;pointer-events:auto;}

/* ============ 主内容 ============ */
.main-col{margin-left:var(--side-w);min-height:100vh;display:flex;flex-direction:column;}

.crumb{
  display:flex;flex-wrap:wrap;align-items:center;gap:8px;
  font-family:var(--mono);font-size:12.5px;letter-spacing:.04em;color:var(--muted);
  padding-top:26px;
}
.crumb a{color:var(--muted);}
.crumb a:hover{color:var(--accent);}
.crumb span.sep{opacity:.6;}
.crumb strong{color:var(--ink-soft);font-weight:600;}

/* Hero */
.hero{position:relative;background:var(--paper-2);border-bottom:1px solid var(--line);overflow:hidden;}
.hero::after{
  content:"";position:absolute;inset:0;
  background:url('/assets/images/backpic/back-2.png') center/cover no-repeat;
  opacity:.07;pointer-events:none;
}
.hero-inner{
  position:relative;z-index:2;display:grid;grid-template-columns:7fr 5fr;
  gap:52px;align-items:center;padding:34px 0 60px;
}
.eyebrow{
  display:inline-flex;align-items:center;gap:8px;
  font-family:var(--mono);font-size:12px;letter-spacing:.08em;color:var(--accent);
  text-transform:uppercase;margin-bottom:18px;
}
.eyebrow::before{content:"";width:22px;height:1px;background:var(--accent);}
.hero h1{
  font-size:clamp(30px,4.1vw,52px);font-weight:800;line-height:1.14;
  color:var(--ink);letter-spacing:-.01em;margin-bottom:20px;
}
.hero-lead{font-size:17px;line-height:1.85;color:var(--ink-soft);max-width:560px;}
.hero-actions{display:flex;flex-wrap:wrap;align-items:center;gap:18px;margin-top:30px;}
.hero-figure{position:relative;border-radius:var(--radius-card);overflow:hidden;box-shadow:var(--shadow-2);}
.hero-figure img{width:100%;aspect-ratio:4/3;object-fit:cover;transition:transform .5s var(--ease);}
.hero-figure:hover img{transform:scale(1.03);}
.hero-figure figcaption{
  position:absolute;left:14px;bottom:14px;background:rgba(13,31,29,.82);color:var(--paper);
  font-family:var(--mono);font-size:11.5px;letter-spacing:.06em;padding:6px 12px;border-radius:var(--radius-pill);
}

/* 按钮 */
.btn{
  display:inline-flex;align-items:center;gap:8px;height:46px;padding:0 26px;
  border-radius:var(--radius-pill);font-size:15px;font-weight:600;
  transition:background .18s var(--ease),color .18s var(--ease),filter .18s var(--ease),transform .12s var(--ease),border-color .18s var(--ease);
  white-space:nowrap;
}
.btn i{transition:transform .18s var(--ease);}
.btn-primary{background:var(--accent);color:var(--accent-ink);}
.btn-primary:hover{color:var(--accent-ink);filter:brightness(.94);}
.btn-primary:hover i{transform:translateX(3px);}
.btn-primary:active{transform:translateY(1px);}
.btn-outline{border:1px solid var(--ink);color:var(--ink);background:transparent;border-radius:10px;}
.btn-outline:hover{background:var(--ink);color:var(--paper);}
.btn-outline:active{transform:translateY(1px);}
.btn-text{
  color:var(--ink);font-weight:600;font-size:15px;text-decoration:underline;
  text-underline-offset:4px;text-decoration-thickness:1px;
}
.btn-text:hover{color:var(--accent);}

/* 锚点条 */
.anchor-bar{
  display:flex;gap:10px;overflow-x:auto;padding:16px 0 18px;
  border-bottom:1px solid var(--line);scrollbar-width:thin;
}
.anchor-bar::-webkit-scrollbar{height:4px;}
.anchor-bar::-webkit-scrollbar-thumb{background:var(--line);border-radius:999px;}
.anchor-bar a{
  flex:0 0 auto;font-size:13px;font-weight:600;color:var(--ink-soft);
  background:var(--paper-2);border:1px solid var(--line);border-radius:var(--radius-pill);
  padding:7px 15px;transition:border-color .18s var(--ease),color .18s var(--ease),transform .18s var(--ease);
}
.anchor-bar a:hover{border-color:rgba(232,98,47,.45);color:var(--accent);transform:translateY(-1px);}

/* 板块 */
.section{padding:88px 0 0;}
.section:last-of-type{padding-bottom:88px;}
.section-head{margin-bottom:34px;max-width:760px;}
.section-tag{
  display:inline-block;font-family:var(--mono);font-size:12px;letter-spacing:.08em;
  color:var(--accent);margin-bottom:12px;
}
.section-head h2{font-size:clamp(22px,2.4vw,31px);font-weight:700;color:var(--ink);line-height:1.3;margin-bottom:12px;}
.section-head p{color:var(--ink-soft);}

/* 概览数据 */
.stats{
  display:grid;grid-template-columns:repeat(4,1fr);gap:1px;
  background:var(--line);border:1px solid var(--line);border-radius:var(--radius-card);overflow:hidden;
}
.stat{background:var(--paper-2);padding:24px;transition:background .2s var(--ease);}
.stat:hover{background:#FCFAF7;}
.stat b{display:block;font-family:var(--mono);font-size:30px;font-weight:700;color:var(--ink);line-height:1.2;}
.stat b small{font-size:14px;font-weight:600;color:var(--muted);margin-left:3px;}
.stat span{display:block;font-size:13px;color:var(--muted);margin-top:6px;}

.group-notes{display:grid;grid-template-columns:repeat(2,1fr);gap:1px;background:var(--line);
  border:1px solid var(--line);border-radius:var(--radius-card);overflow:hidden;margin-top:26px;}
.note{background:var(--paper-2);padding:22px 24px;}
.note h3{font-size:17px;font-weight:600;color:var(--ink);margin-bottom:8px;display:flex;align-items:center;gap:9px;}
.note h3 i{color:var(--accent);font-size:13px;}
.note p{font-size:15px;color:var(--ink-soft);}

/* Accordion */
.acc{border-top:1px solid var(--line);}
.acc-item{border-bottom:1px solid var(--line);transition:background .2s var(--ease);}
.acc-item[open]{background:var(--paper-2);}
.acc-item summary{
  display:flex;align-items:center;gap:16px;padding:24px 14px 24px 6px;cursor:pointer;list-style:none;
}
.acc-item summary::-webkit-details-marker{display:none;}
.acc-num{font-family:var(--mono);font-size:12px;letter-spacing:.08em;color:var(--muted);min-width:28px;transition:color .2s var(--ease);}
.acc-item[open] .acc-num{color:var(--accent);}
.acc-q{flex:1 1 auto;font-size:19px;font-weight:600;color:var(--ink);line-height:1.5;}
.acc-ico{color:var(--muted);font-size:13px;transition:transform .24s var(--ease),color .2s var(--ease);}
.acc-item[open] .acc-ico{transform:rotate(180deg);color:var(--accent);}
.acc-body{padding:0 14px 28px 50px;}
.acc-body>p{max-width:760px;color:var(--ink-soft);}
.acc-links{
  margin-top:18px;display:grid;grid-template-columns:repeat(auto-fit,minmax(228px,1fr));gap:10px;
}
.acc-links a{
  display:flex;align-items:center;gap:9px;padding:13px 15px;border:1px solid var(--line);
  border-radius:var(--radius-img);background:var(--paper);font-size:14px;font-weight:600;color:var(--ink);
  transition:border-color .18s var(--ease),color .18s var(--ease),transform .18s var(--ease),box-shadow .18s var(--ease);
}
.acc-links a i{color:var(--accent);font-size:12px;}
.acc-links a:hover{border-color:rgba(232,98,47,.4);color:var(--accent);transform:translateY(-2px);box-shadow:var(--shadow-1);}

/* 编辑挑选卡片 */
.pick-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:22px;}
.pick-card{
  background:var(--paper-2);border:1px solid var(--line);border-radius:var(--radius-card);
  overflow:hidden;display:flex;flex-direction:column;
  transition:transform .22s var(--ease),box-shadow .22s var(--ease),border-color .22s var(--ease);
}
.pick-card:hover{transform:translateY(-2px);box-shadow:var(--shadow-2);border-color:rgba(232,98,47,.35);}
.pick-thumb{overflow:hidden;aspect-ratio:4/3;}
.pick-thumb img{width:100%;height:100%;object-fit:cover;transition:transform .5s var(--ease);}
.pick-card:hover .pick-thumb img{transform:scale(1.03);}
.pick-body{padding:20px 22px 24px;display:flex;flex-direction:column;gap:10px;flex:1 1 auto;}
.badge{
  display:inline-flex;align-items:center;height:22px;padding:0 11px;border-radius:var(--radius-pill);
  background:#FBF1EB;border:1px solid var(--line);font-family:var(--mono);font-size:11.5px;
  letter-spacing:.06em;color:var(--ink-soft);align-self:flex-start;
  transition:background .18s var(--ease),border-color .18s var(--ease),color .18s var(--ease);
}
.pick-card:hover .badge{background:#F7E3D8;border-color:rgba(232,98,47,.35);color:var(--accent);}
.pick-body h3{font-size:18px;font-weight:600;color:var(--ink);line-height:1.45;}
.pick-body p{font-size:14.5px;color:var(--ink-soft);}
.pick-meta{
  margin-top:auto;padding-top:14px;border-top:1px solid var(--line);
  font-family:var(--mono);font-size:12px;letter-spacing:.04em;color:var(--muted);
  display:flex;justify-content:space-between;gap:10px;
}

/* FAQ */
.faq-grid{display:grid;grid-template-columns:repeat(2,1fr);gap:20px;}
.faq-card{
  background:var(--paper-2);border:1px solid var(--line);border-radius:var(--radius-card);
  padding:24px;transition:border-color .2s var(--ease),box-shadow .2s var(--ease);
}
.faq-card:hover{border-color:rgba(232,98,47,.35);box-shadow:var(--shadow-1);}
.faq-card h3{font-size:17px;font-weight:600;color:var(--ink);margin-bottom:10px;display:flex;gap:10px;align-items:flex-start;line-height:1.5;}
.faq-card h3 i{color:var(--accent);font-size:14px;margin-top:4px;}
.faq-card p{font-size:15px;color:var(--ink-soft);}

/* 相关分类与 CTA */
.topic-links{display:flex;flex-wrap:wrap;gap:12px;margin-top:26px;}
.topic-links a{
  display:inline-flex;align-items:center;gap:8px;padding:11px 20px;border-radius:var(--radius-pill);
  border:1px solid var(--line);background:var(--paper-2);font-size:14px;font-weight:600;color:var(--ink);
  transition:border-color .18s var(--ease),color .18s var(--ease),transform .18s var(--ease);
}
.topic-links a i{font-size:12px;color:var(--accent);}
.topic-links a:hover{border-color:rgba(232,98,47,.45);color:var(--accent);transform:translateY(-2px);}

.cta-band{
  position:relative;overflow:hidden;background:var(--ink);color:var(--paper);
  border-radius:16px;padding:44px 42px;display:flex;align-items:center;justify-content:space-between;
  gap:28px;flex-wrap:wrap;
}
.cta-band::after{
  content:"";position:absolute;right:-60px;top:-60px;width:260px;height:260px;border-radius:50%;
  background:rgba(232,98,47,.16);pointer-events:none;
}
.cta-copy{position:relative;z-index:2;max-width:620px;}
.cta-copy h2{font-size:clamp(21px,2.3vw,28px);font-weight:700;color:var(--paper);margin-bottom:10px;line-height:1.35;}
.cta-copy p{color:rgba(246,243,238,.76);font-size:15.5px;}
.cta-actions{position:relative;z-index:2;display:flex;gap:14px;flex-wrap:wrap;}
.cta-band .btn-outline{border-color:rgba(246,243,238,.5);color:var(--paper);}
.cta-band .btn-outline:hover{background:var(--paper);color:var(--ink);border-color:var(--paper);}

/* 页脚 */
.site-footer{margin-top:96px;background:var(--ink);color:rgba(246,243,238,.78);}
.footer-grid{
  display:grid;grid-template-columns:1.4fr 1fr 1fr 1fr;gap:36px;padding:64px 0 44px;
}
.footer-col h4{
  font-family:var(--mono);font-size:13px;letter-spacing:.08em;color:var(--accent);
  font-weight:600;margin-bottom:18px;
}
.footer-col ul{display:flex;flex-direction:column;gap:11px;}
.footer-col li{font-size:14.5px;}
.footer-col a{color:rgba(246,243,238,.78);}
.footer-col a:hover{color:var(--accent);}
.footer-logo{display:flex;align-items:center;gap:11px;color:var(--paper);font-size:17px;font-weight:700;margin-bottom:14px;}
.footer-logo span.mark{
  width:30px;height:30px;border-radius:8px;background:var(--accent);color:var(--accent-ink);
  display:grid;place-items:center;font-size:15px;font-weight:800;
}
.footer-brand p{font-size:14.5px;max-width:280px;color:rgba(246,243,238,.72);}
.footer-tags{display:flex;flex-wrap:wrap;gap:8px;margin-top:16px;}
.footer-tags span{
  font-family:var(--mono);font-size:11.5px;letter-spacing:.05em;color:rgba(246,243,238,.6);
  border:1px solid rgba(246,243,238,.18);border-radius:var(--radius-pill);padding:4px 11px;
}
.footer-note{color:rgba(246,243,238,.62);font-size:14px;line-height:1.9;}
.footer-bottom{
  border-top:1px solid rgba(246,243,238,.12);padding:20px 0 26px;
  display:flex;justify-content:space-between;gap:14px;flex-wrap:wrap;
  font-family:var(--mono);font-size:12px;letter-spacing:.04em;color:rgba(246,243,238,.55);
}

/* 弹窗 */
.modal{
  position:fixed;inset:0;display:none;align-items:center;justify-content:center;
  background:rgba(13,31,29,.55);z-index:120;padding:20px;
}
.modal.show{display:flex;}
.modal-box{
  background:var(--paper-2);border-radius:var(--radius-card);max-width:440px;width:100%;
  padding:32px 30px;box-shadow:var(--shadow-2);border:1px solid var(--line);
}
.modal-box h3{font-size:19px;font-weight:700;color:var(--ink);margin-bottom:10px;}
.modal-box p{font-size:14.5px;color:var(--ink-soft);margin-bottom:20px;}
.share-row{
  display:flex;align-items:center;gap:10px;border:1px solid var(--line);border-radius:var(--radius-img);
  padding:10px 12px;background:var(--paper);margin-bottom:20px;
}
.share-row span{flex:1 1 auto;font-family:var(--mono);font-size:12.5px;color:var(--muted);overflow:hidden;text-overflow:ellipsis;white-space:nowrap;}
.modal-actions{display:flex;gap:12px;flex-wrap:wrap;}

/* 入场动效 */
.reveal{opacity:0;transform:translateY(12px);transition:opacity .4s var(--ease),transform .4s var(--ease);}
.reveal.in{opacity:1;transform:none;}
.reveal.d1{transition-delay:.06s;}
.reveal.d2{transition-delay:.12s;}
.reveal.d3{transition-delay:.18s;}

@media (prefers-reduced-motion:reduce){
  *{animation-duration:.001ms !important;transition-duration:.001ms !important;}
  html{scroll-behavior:auto;}
  .reveal{opacity:1;transform:none;}
}

/* ============ 响应式 ============ */
@media (max-width:1279px){
  .page-wrap{padding:0 32px;}
  .hero-inner{gap:40px;}
}
@media (max-width:1023px){
  .topbar{display:flex;}
  .side-nav{transform:translateX(-100%);width:280px;}
  .side-nav.open{transform:none;box-shadow:var(--shadow-2);}
  .main-col{margin-left:0;padding-top:var(--topbar-h);}
  .page-wrap{padding:0 24px;}
  .hero-inner{grid-template-columns:1fr;gap:32px;padding:26px 0 48px;}
  .hero-figure{order:-1;}
  .section{padding-top:64px;}
  .section:last-of-type{padding-bottom:64px;}
  .stats{grid-template-columns:repeat(2,1fr);}
  .pick-grid{grid-template-columns:repeat(2,1fr);}
  .footer-grid{grid-template-columns:repeat(2,1fr);gap:30px;padding:52px 0 36px;}
}
@media (max-width:640px){
  body{font-size:15.5px;}
  .page-wrap{padding:0 18px;}
  .hero h1{font-size:30px;}
  .hero-lead{font-size:16px;}
  .section{padding-top:52px;}
  .section:last-of-type{padding-bottom:52px;}
  .stats{grid-template-columns:1fr;}
  .group-notes{grid-template-columns:1fr;}
  .pick-grid{grid-template-columns:1fr;}
  .faq-grid{grid-template-columns:1fr;}
  .acc-item summary{padding:20px 6px;gap:12px;}
  .acc-q{font-size:17px;}
  .acc-body{padding:0 6px 24px 6px;}
  .cta-band{padding:32px 22px;}
  .cta-actions{width:100%;}
  .cta-actions .btn{flex:1 1 auto;justify-content:center;}
  .footer-grid{grid-template-columns:1fr;padding:44px 0 30px;}
  .footer-bottom{flex-direction:column;gap:8px;}
}

/* roulang page: category2 */
:root{
  --ink:#0D1F1D;
  --ink-soft:#2B3330;
  --paper:#F6F3EE;
  --paper-2:#FFFFFF;
  --accent:#E8622F;
  --accent-ink:#0D1F1D;
  --line:#E3DED6;
  --muted:#7C8580;
  --shadow-1:0 1px 2px rgba(13,31,29,.05);
  --shadow-2:0 12px 28px rgba(13,31,29,.10);
  --r-card:12px;
  --r-img:10px;
  --r-pill:999px;
  --r-input:10px;
  --side-w:236px;
  --font-sans:"PingFang SC","HarmonyOS Sans SC","Microsoft YaHei",system-ui,-apple-system,"Segoe UI",Roboto,sans-serif;
  --font-mono:"SFMono-Regular","JetBrains Mono",Consolas,"Liberation Mono",Menlo,monospace;
}
*,*::before,*::after{box-sizing:border-box}
html{-webkit-text-size-adjust:100%}
body{
  margin:0;
  background:var(--paper);
  color:var(--ink-soft);
  font-family:var(--font-sans);
  font-size:16.5px;
  line-height:1.85;
  font-weight:400;
  -webkit-font-smoothing:antialiased;
}
img{max-width:100%;display:block;border:0}
h1,h2,h3,h4{margin:0;color:var(--ink);font-weight:700;line-height:1.3}
p{margin:0}
ul{margin:0;padding:0;list-style:none}
a{color:inherit;text-decoration:none;transition:color .18s ease}
a:hover{color:var(--accent)}
button{font-family:inherit}
a:focus-visible,button:focus-visible,input:focus-visible{outline:2px solid var(--accent);outline-offset:3px;border-radius:6px}
.mono{font-family:var(--font-mono)}
.container{width:100%;max-width:1200px;margin:0 auto;padding:0 40px}
.section{padding:80px 0}
.section-head{max-width:780px;margin-bottom:36px}
.section-head h2{font-size:30px;margin-bottom:12px}
.section-head p{color:var(--muted);font-size:15.5px}

/* ---------- 侧栏导航 ---------- */
.side-nav{
  position:fixed;top:0;left:0;bottom:0;width:var(--side-w);
  background:var(--ink);color:#EDEAE4;display:flex;flex-direction:column;z-index:60;
}
.side-brand{
  height:88px;display:flex;flex-direction:column;justify-content:center;
  padding:0 22px;border-bottom:1px solid rgba(255,255,255,.08);
}
.brand-link{display:flex;align-items:center;gap:10px;color:#fff;font-weight:800;font-size:17px;letter-spacing:.02em}
.brand-link:hover{color:#fff}
.brand-mark{
  width:28px;height:28px;border-radius:8px;background:var(--accent);color:var(--accent-ink);
  display:grid;place-items:center;font-size:15px;font-weight:800;flex:0 0 auto;
}
.brand-sub{font-family:var(--font-mono);font-size:11px;letter-spacing:.12em;color:rgba(255,255,255,.45);margin-top:6px}
.side-menu{padding:18px 0;display:flex;flex-direction:column}
.side-item{
  position:relative;display:flex;align-items:center;gap:12px;height:46px;padding:0 22px;
  font-size:15px;font-weight:600;color:rgba(237,234,228,.78);transition:background .18s ease,color .18s ease;
}
.side-item::before{content:"";position:absolute;left:0;top:0;bottom:0;width:3px;background:transparent;transition:background .18s ease}
.side-item:hover{background:rgba(255,255,255,.05);color:#fff}
.side-item:hover::before{background:rgba(232,98,47,.6)}
.side-item.is-active{background:rgba(255,255,255,.06);color:#fff}
.side-item.is-active::before{background:var(--accent)}
.side-item .idx{font-family:var(--font-mono);font-size:12px;letter-spacing:.08em;color:rgba(255,255,255,.35)}
.side-item.is-active .idx{color:var(--accent)}
.side-foot{margin-top:auto;padding:18px 22px;display:flex;gap:10px;border-top:1px solid rgba(255,255,255,.08)}
.icon-btn{
  width:40px;height:40px;border-radius:10px;border:1px solid rgba(255,255,255,.14);
  background:transparent;color:rgba(237,234,228,.8);cursor:pointer;font-size:15px;
  transition:color .18s ease,border-color .18s ease,background .18s ease;
}
.icon-btn:hover{color:var(--accent);border-color:rgba(232,98,47,.5);background:rgba(255,255,255,.04)}
.topbar{display:none}
.nav-scrim{position:fixed;inset:0;background:rgba(13,31,29,.55);opacity:0;visibility:hidden;transition:opacity .24s ease;z-index:75}
.nav-scrim.is-on{opacity:1;visibility:visible}
.nav-locked{overflow:hidden}
.main-col{margin-left:var(--side-w);min-height:100vh;display:flex;flex-direction:column}
.main-col main{flex:1 1 auto}

/* ---------- 面包屑 / Hero ---------- */
.breadcrumb{display:flex;align-items:center;gap:10px;font-size:13px;color:var(--muted);margin-bottom:26px;font-family:var(--font-mono);letter-spacing:.04em}
.breadcrumb a{color:var(--muted)}
.breadcrumb a:hover{color:var(--accent)}
.hero{position:relative;overflow:hidden;padding:64px 0 68px;border-bottom:1px solid var(--line)}
.hero-bg{
  position:absolute;inset:0;
  background:url('/assets/images/backpic/back-2.png') center/cover no-repeat;
  opacity:.15;pointer-events:none;
}
.hero::after{
  content:"02";position:absolute;right:-16px;top:-48px;line-height:1;
  font-family:var(--font-mono);font-size:220px;font-weight:700;color:rgba(13,31,29,.04);pointer-events:none;
}
.hero .container{position:relative;z-index:2}
.hero-grid{display:grid;grid-template-columns:7fr 5fr;gap:52px;align-items:center}
.eyebrow{
  display:inline-block;font-family:var(--font-mono);font-size:12px;letter-spacing:.08em;
  color:var(--accent);margin-bottom:18px;
}
.hero h1{font-size:clamp(30px,3.6vw,52px);font-weight:800;line-height:1.14;letter-spacing:-.01em}
.hero-lead{margin-top:20px;font-size:17px;color:var(--ink-soft);max-width:620px}
.hero-actions{display:flex;align-items:center;gap:20px;flex-wrap:wrap;margin-top:30px}
.hero-meta{display:flex;flex-wrap:wrap;gap:28px;margin-top:32px;font-size:14px;color:var(--muted)}
.hero-meta li{display:flex;align-items:baseline}
.hero-meta .mono{color:var(--ink);font-weight:700;font-size:19px;margin-right:6px}
.hero-cover{margin:0}
.hero-cover img{width:100%;aspect-ratio:4/3;object-fit:cover;border-radius:var(--r-img);box-shadow:var(--shadow-2)}
.hero-cover figcaption{font-family:var(--font-mono);font-size:12.5px;color:var(--muted);margin-top:12px;letter-spacing:.04em}

/* ---------- 按钮 ---------- */
.btn{
  display:inline-flex;align-items:center;justify-content:center;gap:8px;height:46px;padding:0 26px;
  border-radius:var(--r-pill);font-size:15px;font-weight:600;border:1px solid transparent;
  cursor:pointer;transition:transform .18s ease,background .18s ease,color .18s ease,border-color .18s ease,box-shadow .18s ease;
}
.btn i{transition:transform .18s ease}
.btn:hover i{transform:translateX(3px)}
.btn.btn-primary{background:var(--accent);color:var(--accent-ink);box-shadow:var(--shadow-1)}
.btn.btn-primary:hover{background:#d9561f;color:var(--accent-ink);transform:translateY(-1px)}
.btn.btn-primary:active{transform:translateY(0)}
.btn.btn-ghost{background:transparent;border-color:var(--ink);color:var(--ink)}
.btn.btn-ghost:hover{background:var(--ink);color:var(--paper)}
.btn.btn-light{background:transparent;border-color:rgba(246,243,238,.42);color:#F6F3EE}
.btn.btn-light:hover{background:#F6F3EE;color:var(--ink)}
.link-cta{
  display:inline-flex;align-items:center;gap:6px;font-size:15px;font-weight:600;color:var(--ink);
  text-decoration:underline;text-decoration-thickness:1px;text-underline-offset:4px;text-decoration-color:var(--line);
}
.link-cta:hover{color:var(--accent);text-decoration-color:var(--accent)}
.link-cta i{transition:transform .18s ease}
.link-cta:hover i{transform:translateX(3px)}

/* ---------- 锚点条 ---------- */
.anchor-bar{background:var(--paper-2);border-bottom:1px solid var(--line)}
.anchor-bar .container{display:flex;gap:30px;overflow-x:auto;padding-top:16px;padding-bottom:16px}
.anchor-bar a{position:relative;font-size:14px;font-weight:600;white-space:nowrap;color:var(--ink-soft);padding-bottom:2px}
.anchor-bar a::after{content:"";position:absolute;left:0;bottom:-2px;width:0;height:2px;background:var(--accent);transition:width .2s ease}
.anchor-bar a:hover{color:var(--accent)}
.anchor-bar a:hover::after{width:100%}

/* ---------- 筛选胶囊 ---------- */
.filter-bar{display:flex;flex-wrap:wrap;gap:10px;margin-bottom:34px}
.pill{
  height:36px;padding:0 18px;border-radius:var(--r-pill);border:1px solid var(--line);
  background:var(--paper-2);color:var(--ink-soft);font-size:14px;font-weight:600;cursor:pointer;
  transition:background .18s ease,color .18s ease,border-color .18s ease;
}
.pill:hover{border-color:rgba(232,98,47,.45);color:var(--accent)}
.pill.is-on{background:var(--ink);border-color:var(--ink);color:var(--paper)}

/* ---------- 卡片网格 ---------- */
.card-grid{display:grid;grid-template-columns:repeat(2,1fr);gap:24px}
.entry-card{
  display:flex;flex-direction:column;overflow:hidden;background:var(--paper-2);
  border:1px solid var(--line);border-radius:var(--r-card);
  transition:transform .2s ease,box-shadow .2s ease,border-color .2s ease;
  animation:fadeUp .45s cubic-bezier(.22,.61,.36,1) both;
}
.card-grid .entry-card:nth-child(2){animation-delay:.06s}
.card-grid .entry-card:nth-child(3){animation-delay:.12s}
.card-grid .entry-card:nth-child(4){animation-delay:.18s}
.card-grid .entry-card:nth-child(5){animation-delay:.24s}
.card-grid .entry-card:nth-child(6){animation-delay:.3s}
.card-grid .entry-card:nth-child(7){animation-delay:.36s}
.card-grid .entry-card:nth-child(8){animation-delay:.42s}
.entry-card:hover{transform:translateY(-2px);box-shadow:var(--shadow-2);border-color:rgba(232,98,47,.35)}
.card-media{overflow:hidden;aspect-ratio:16/9;background:var(--paper)}
.card-media img{width:100%;height:100%;object-fit:cover;transition:transform .5s ease}
.entry-card:hover .card-media img{transform:scale(1.03)}
.card-body{padding:22px 24px 24px;display:flex;flex-direction:column;gap:12px;flex:1 1 auto}
.card-top{display:flex;align-items:center;justify-content:space-between;gap:12px}
.tag{
  display:inline-flex;align-items:center;height:22px;padding:0 10px;border-radius:var(--r-pill);
  border:1px solid var(--line);background:var(--paper);font-family:var(--font-mono);
  font-size:12px;letter-spacing:.04em;color:var(--muted);transition:background .18s ease,color .18s ease,border-color .18s ease;
}
.entry-card:hover .tag{background:rgba(232,98,47,.1);border-color:rgba(232,98,47,.3);color:var(--accent)}
.card-no{font-size:12px;color:var(--muted);letter-spacing:.08em}
.card-body h3{font-size:20px;font-weight:600}
.card-body p{font-size:15px;color:var(--ink-soft)}
.card-specs{border-top:1px solid var(--line);display:flex;flex-direction:column}
.card-specs li{display:flex;justify-content:space-between;gap:12px;padding:9px 0;border-bottom:1px solid var(--line);font-size:13.5px}
.card-specs li:last-child{border-bottom:0}
.card-specs span{color:var(--muted)}
.card-specs b{color:var(--ink);font-weight:600}
.card-body .link-cta{margin-top:auto;padding-top:6px}

/* ---------- 三列说明 ---------- */
.why-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:24px}
.why-card{
  background:var(--paper-2);border:1px solid var(--line);border-radius:var(--r-card);
  padding:24px;display:flex;flex-direction:column;gap:10px;
  transition:transform .2s ease,box-shadow .2s ease,border-color .2s ease;
}
.why-card:hover{transform:translateY(-2px);box-shadow:var(--shadow-2);border-color:rgba(232,98,47,.35)}
.why-card .num{font-family:var(--font-mono);font-size:12px;letter-spacing:.08em;color:var(--accent)}
.why-card h3{font-size:19px;font-weight:600}
.why-card p{font-size:15px}

/* ---------- 数据条 ---------- */
.stats-row .stat-card{
  background:var(--paper-2);border:1px solid var(--line);border-radius:var(--r-card);
  padding:24px;height:100%;
}
.stat-card .stat-label{font-size:14px;color:var(--muted)}
.stat-card .stat-value{font-family:var(--font-mono);font-size:34px;font-weight:700;color:var(--ink);line-height:1.2;margin-top:6px}
.stat-card .stat-value small{font-size:15px;font-weight:600;color:var(--muted);margin-left:4px}
.meter{height:6px;border-radius:var(--r-pill);background:var(--line);overflow:hidden;margin-top:16px}
.meter i{display:block;height:100%;border-radius:inherit;background:var(--accent)}
.stat-card .stat-note{font-size:13px;color:var(--muted);margin-top:12px}

/* ---------- 步骤 ---------- */
.step-row{display:grid;grid-template-columns:repeat(3,1fr);gap:24px}
.step{
  position:relative;background:var(--paper-2);border:1px solid var(--line);
  border-radius:var(--r-card);padding:26px 24px;
}
.step .step-num{font-family:var(--font-mono);font-size:32px;font-weight:700;color:rgba(13,31,29,.13);line-height:1}
.step h3{font-size:19px;font-weight:600;margin:12px 0 10px}
.step p{font-size:15px}

/* ---------- FAQ ---------- */
.faq-wrap{max-width:840px}
.accordion{background:transparent;border:0;margin:0}
.accordion .accordion-item{
  background:var(--paper-2);border:1px solid var(--line);border-radius:var(--r-card);
  margin-bottom:12px;overflow:hidden;
}
.accordion .accordion-item:last-child{margin-bottom:0}
.accordion .accordion-title{
  position:relative;display:block;border:0;background:transparent;color:var(--ink);
  padding:20px 60px 20px 22px;font-size:17px;font-weight:600;line-height:1.5;
  transition:background .18s ease,color .18s ease;
}
.accordion .accordion-title:hover,.accordion .accordion-title:focus{background:rgba(232,98,47,.05);color:var(--ink)}
.accordion .accordion-title::before{
  content:"+";position:absolute;right:22px;top:50%;transform:translateY(-50%);
  font-family:var(--font-mono);font-size:22px;line-height:1;color:var(--accent);
}
.accordion .accordion-item.is-active .accordion-title::before{content:"−"}
.accordion .accordion-content{background:transparent;border:0;padding:0 22px 22px;font-size:15.5px;color:var(--ink-soft)}
.accordion .accordion-content p{margin:0}

/* ---------- 相关分类 ---------- */
.related-grid{display:flex;flex-wrap:wrap;gap:12px}
.related-pill{
  display:inline-flex;align-items:center;gap:8px;height:44px;padding:0 20px;
  border-radius:var(--r-pill);border:1px solid var(--line);background:var(--paper-2);
  font-size:15px;font-weight:600;color:var(--ink);
  transition:transform .18s ease,color .18s ease,border-color .18s ease,box-shadow .18s ease;
}
.related-pill:hover{color:var(--accent);border-color:rgba(232,98,47,.5);transform:translateY(-1px);box-shadow:var(--shadow-1)}
.related-pill i{font-size:12px;color:var(--muted)}

/* ---------- CTA 带 ---------- */
.cta-band{
  display:flex;align-items:center;justify-content:space-between;gap:28px;flex-wrap:wrap;
  background:var(--ink);color:#F6F3EE;border-radius:14px;padding:40px;margin:0 0 80px;
}
.cta-band h2{color:#fff;font-size:26px;margin-bottom:8px}
.cta-band p{color:rgba(246,243,238,.7);font-size:15px}
.cta-actions{display:flex;gap:14px;flex-wrap:wrap}

/* ---------- 页脚 ---------- */
.site-footer{background:var(--ink);color:rgba(237,234,228,.72);margin-top:auto;padding:64px 0 0}
.footer-grid{display:grid;grid-template-columns:1.4fr 1fr 1fr 1fr;gap:32px;padding-bottom:48px}
.footer-col h4{
  font-family:var(--font-mono);font-size:13px;font-weight:500;letter-spacing:.08em;
  color:var(--accent);margin-bottom:16px;
}
.footer-col ul{display:flex;flex-direction:column;gap:10px;font-size:14.5px}
.footer-col a{color:rgba(237,234,228,.72)}
.footer-col a:hover{color:var(--accent)}
.footer-logo{display:block;font-size:19px;font-weight:800;color:#fff;margin-bottom:12px}
.footer-brand p{font-size:14.5px;margin-bottom:10px;max-width:280px}
.footer-note{font-family:var(--font-mono);font-size:12px;color:rgba(237,234,228,.45);letter-spacing:.04em}
.footer-bottom{
  display:flex;justify-content:space-between;gap:16px;flex-wrap:wrap;
  border-top:1px solid rgba(255,255,255,.1);padding:20px 0;font-size:13px;color:rgba(237,234,228,.5);
}

/* ---------- 分享弹窗 ---------- */
.reveal.share-modal{
  width:100%;max-width:520px;border:1px solid var(--line);border-radius:14px;
  background:var(--paper-2);box-shadow:var(--shadow-2);padding:28px;
}
.share-modal h3{font-size:20px;margin-bottom:10px}
.share-modal p{font-size:14.5px;color:var(--muted)}
.share-row{display:flex;gap:10px;margin-top:18px}
.share-row input{
  flex:1 1 auto;height:48px;border-radius:var(--r-input);border:1px solid var(--line);
  background:var(--paper);padding:0 14px;font-family:var(--font-mono);font-size:13.5px;color:var(--ink-soft);
}
.share-row input:focus{outline:none;border-color:var(--accent);box-shadow:0 0 0 3px rgba(232,98,47,.18)}
.reveal .close-button{color:var(--muted)}
.reveal .close-button:hover{color:var(--accent)}

@keyframes fadeUp{from{opacity:0;transform:translateY(12px)}to{opacity:1;transform:none}}

@media (max-width:1279px){
  .container{padding:0 32px}
}
@media (max-width:1023px){
  .topbar{
    display:flex;position:fixed;top:0;left:0;right:0;height:56px;align-items:center;
    justify-content:space-between;background:var(--ink);color:#fff;z-index:70;padding:0 10px;
  }
  .topbar-brand{font-weight:700;font-size:16px;color:#fff}
  .topbar-btn{
    width:44px;height:44px;border:0;border-radius:10px;background:transparent;color:#fff;
    font-size:18px;cursor:pointer;transition:color .18s ease;
  }
  .topbar-btn:hover{color:var(--accent)}
  .side-nav{width:280px;transform:translateX(-100%);transition:transform .24s cubic-bezier(.22,.61,.36,1);z-index:80}
  .side-nav.is-open{transform:translateX(0)}
  .main-col{margin-left:0;padding-top:56px}
  .hero{padding:52px 0 56px}
  .hero-grid{grid-template-columns:1fr;gap:34px}
  .card-grid{grid-template-columns:1fr}
  .why-grid,.step-row{grid-template-columns:1fr}
  .footer-grid{grid-template-columns:1fr 1fr}
  .section{padding:64px 0}
  .cta-band{margin-bottom:64px}
}
@media (max-width:640px){
  body{font-size:16px}
  .container{padding:0 20px}
  .hero h1{font-size:31px}
  .hero::after{font-size:132px;top:-24px}
  .hero-actions{flex-direction:column;align-items:stretch;gap:14px}
  .hero-actions .btn{width:100%}
  .hero-meta{gap:16px}
  .section{padding:52px 0}
  .section-head h2{font-size:23px}
  .card-grid{gap:18px}
  .card-body{padding:18px 18px 20px}
  .cta-band{padding:28px 22px;border-radius:12px}
  .cta-band h2{font-size:22px}
  .cta-actions{width:100%}
  .cta-actions .btn{width:100%}
  .footer-grid{grid-template-columns:1fr}
  .footer-bottom{flex-direction:column;gap:8px}
  .share-row{flex-direction:column}
  .share-row .btn{width:100%}
}
@media (prefers-reduced-motion:reduce){
  *,*::before,*::after{animation-duration:.001ms !important;transition-duration:.001ms !important}
}

/* roulang page: category5 */
:root{
  --ink:#0D1F1D;
  --ink-soft:#2B3330;
  --paper:#F6F3EE;
  --paper-2:#FFFFFF;
  --accent:#E8622F;
  --accent-ink:#0D1F1D;
  --line:#E3DED6;
  --muted:#7C8580;
  --radius-card:12px;
  --radius-img:10px;
  --radius-btn:999px;
  --radius-input:10px;
  --shadow-1:0 1px 2px rgba(13,31,29,.05);
  --shadow-2:0 12px 28px rgba(13,31,29,.10);
  --sans:"PingFang SC","HarmonyOS Sans SC","Microsoft YaHei",system-ui,-apple-system,"Segoe UI",Roboto,sans-serif;
  --mono:"SFMono-Regular","JetBrains Mono",Consolas,"Liberation Mono",Menlo,monospace;
  --side-w:236px;
  --section:92px;
}
*,*::before,*::after{box-sizing:border-box}
html{scroll-behavior:smooth}
body{
  margin:0;
  font-family:var(--sans);
  font-size:16px;
  line-height:1.85;
  color:var(--ink-soft);
  background:var(--paper);
  -webkit-font-smoothing:antialiased;
  text-rendering:optimizeLegibility;
}
img{max-width:100%;display:block;border-radius:var(--radius-img)}
a{color:inherit;text-decoration:none;transition:color .18s ease}
a:hover{color:var(--accent)}
button{font:inherit;color:inherit;background:none;border:0;cursor:pointer}
ul,ol{margin:0;padding:0;list-style:none}
h1,h2,h3,h4{margin:0;color:var(--ink);font-weight:700;line-height:1.2}
p{margin:0}
::selection{background:rgba(232,98,47,.22)}
:focus-visible{outline:2px solid var(--accent);outline-offset:3px;border-radius:4px}

.layout{display:flex;min-height:100vh}

/* ============ 侧边导航 ============ */
.side-nav{
  position:fixed;
  top:0;left:0;bottom:0;
  width:var(--side-w);
  background:var(--ink);
  display:flex;
  flex-direction:column;
  padding-bottom:18px;
  z-index:60;
}
.brand{
  height:88px;
  display:flex;
  align-items:center;
  gap:11px;
  padding:0 22px;
  border-bottom:1px solid rgba(255,255,255,.09);
}
.brand-mark{
  width:34px;height:34px;
  flex:0 0 34px;
  border-radius:9px;
  background:var(--accent);
  color:var(--accent-ink);
  display:grid;place-items:center;
  font-family:var(--mono);
  font-size:14px;font-weight:700;
  letter-spacing:.02em;
}
.brand-name{
  font-size:16px;
  font-weight:800;
  color:#FFFFFF;
  letter-spacing:.01em;
  white-space:nowrap;
}
.side-label{
  padding:20px 22px 8px;
  font-family:var(--mono);
  font-size:12px;
  letter-spacing:.08em;
  color:var(--accent);
  text-transform:uppercase;
}
.side-links{display:flex;flex-direction:column}
.side-links a{
  position:relative;
  display:flex;
  align-items:center;
  gap:11px;
  height:46px;
  padding:0 22px;
  font-size:15px;
  font-weight:600;
  color:rgba(255,255,255,.70);
  transition:background .18s ease,color .18s ease;
}
.side-links a i{width:17px;font-size:14px;color:rgba(255,255,255,.45);transition:color .18s ease}
.side-links a:hover{background:rgba(255,255,255,.05);color:#fff}
.side-links a:hover i{color:var(--accent)}
.side-links a.is-active{background:rgba(255,255,255,.06);color:#fff}
.side-links a.is-active i{color:var(--accent)}
.side-links a.is-active::before{
  content:"";
  position:absolute;left:0;top:9px;bottom:9px;width:3px;
  background:var(--accent);border-radius:0 3px 3px 0;
}
.side-foot{
  margin-top:auto;
  padding:18px 22px 0;
  border-top:1px solid rgba(255,255,255,.09);
  display:flex;
  align-items:center;
  gap:10px;
}
.icon-btn{
  width:38px;height:38px;
  display:grid;place-items:center;
  border-radius:10px;
  border:1px solid rgba(255,255,255,.16);
  color:rgba(255,255,255,.72);
  transition:color .18s ease,border-color .18s ease,background .18s ease;
}
.icon-btn:hover{color:var(--accent);border-color:rgba(232,98,47,.6);background:rgba(255,255,255,.05)}
.side-foot .side-note{
  margin-left:auto;
  font-family:var(--mono);
  font-size:11px;
  letter-spacing:.06em;
  color:rgba(255,255,255,.35);
}

/* ============ 移动端顶栏 ============ */
.topbar{
  display:none;
  position:sticky;
  top:0;
  z-index:70;
  height:56px;
  align-items:center;
  justify-content:space-between;
  padding:0 12px;
  background:var(--ink);
  border-bottom:1px solid rgba(255,255,255,.09);
}
.topbar-btn{
  width:40px;height:40px;
  display:grid;place-items:center;
  border-radius:10px;
  color:rgba(255,255,255,.82);
  font-size:17px;
  transition:color .18s ease,background .18s ease;
}
.topbar-btn:hover{color:var(--accent);background:rgba(255,255,255,.06)}
.topbar-brand{
  font-size:16px;
  font-weight:800;
  color:#fff;
  letter-spacing:.01em;
}

/* 抽屉 */
.drawer-mask{
  position:fixed;inset:0;
  background:rgba(13,31,29,.45);
  opacity:0;visibility:hidden;
  transition:opacity .24s ease,visibility .24s ease;
  z-index:80;
}
.drawer-mask.is-open{opacity:1;visibility:visible}
.drawer{
  position:fixed;top:0;left:0;bottom:0;
  width:280px;
  background:var(--ink);
  transform:translateX(-100%);
  transition:transform .24s cubic-bezier(.22,.61,.36,1);
  z-index:90;
  display:flex;flex-direction:column;
  padding-bottom:18px;
}
.drawer.is-open{transform:translateX(0)}

/* ============ 主内容 ============ */
.main-col{
  margin-left:var(--side-w);
  flex:1;
  min-width:0;
  display:flex;
  flex-direction:column;
}
.wrap{
  width:100%;
  max-width:1200px;
  margin:0 auto;
  padding:0 32px;
}
main{flex:1}

/* 面包屑 */
.crumb{
  display:flex;
  align-items:center;
  gap:9px;
  font-family:var(--mono);
  font-size:12px;
  letter-spacing:.04em;
  color:var(--muted);
  padding-top:34px;
}
.crumb a:hover{color:var(--accent)}
.crumb .sep{color:var(--line)}
.crumb .now{color:var(--ink)}

/* Hero */
.hero{
  position:relative;
  border-bottom:1px solid var(--line);
  overflow:hidden;
  background:
    linear-gradient(105deg,rgba(246,243,238,.94) 0%,rgba(246,243,238,.82) 46%,rgba(246,243,238,.55) 100%),
    url("/assets/images/backpic/back-2.png") center right/cover no-repeat;
}
.hero::after{
  content:"05";
  position:absolute;
  right:24px;bottom:-42px;
  font-family:var(--mono);
  font-size:190px;
  font-weight:700;
  line-height:1;
  color:rgba(13,31,29,.045);
  pointer-events:none;
  user-select:none;
}
.hero-grid{
  display:grid;
  grid-template-columns:7fr 5fr;
  gap:56px;
  align-items:center;
  padding:34px 0 64px;
  position:relative;
  z-index:2;
}
.hero-text .badge{margin-bottom:20px}
.hero h1{
  font-size:52px;
  font-weight:800;
  line-height:1.14;
  letter-spacing:-.01em;
  margin-bottom:20px;
}
.hero-sub{
  font-size:19px;
  line-height:1.7;
  color:var(--ink);
  font-weight:500;
  margin-bottom:16px;
}
.hero-lead{
  font-size:16px;
  color:var(--ink-soft);
  margin-bottom:28px;
  max-width:600px;
}
.hero-actions{display:flex;align-items:center;gap:24px;flex-wrap:wrap;margin-bottom:34px}
.hero-stats{
  display:flex;
  gap:34px;
  flex-wrap:wrap;
  padding-top:22px;
  border-top:1px solid var(--line);
}
.hero-stats .stat b{
  display:block;
  font-family:var(--mono);
  font-size:26px;
  font-weight:700;
  color:var(--ink);
  line-height:1.2;
}
.hero-stats .stat span{
  font-size:13px;
  color:var(--muted);
  letter-spacing:.02em;
}
.hero-media{
  margin:0;
  border-radius:14px;
  overflow:hidden;
  border:1px solid var(--line);
  box-shadow:var(--shadow-2);
  background:var(--paper-2);
  aspect-ratio:4/3;
}
.hero-media img{
  width:100%;height:100%;
  object-fit:cover;
  border-radius:0;
  transition:transform .5s cubic-bezier(.22,.61,.36,1);
}
.hero-media:hover img{transform:scale(1.03)}

/* 锚点条 */
.anchor-bar{
  display:flex;
  flex-wrap:wrap;
  gap:8px 30px;
  padding:18px 0;
  border-top:1px solid var(--line);
  position:relative;
  z-index:2;
}
.anchor-bar a{
  display:inline-flex;
  align-items:center;
  gap:8px;
  font-family:var(--mono);
  font-size:12px;
  letter-spacing:.06em;
  color:var(--muted);
  padding:2px 0;
  border-bottom:1px solid transparent;
  transition:color .18s ease,border-color .18s ease;
}
.anchor-bar a:hover{color:var(--accent);border-bottom-color:var(--accent)}
.anchor-bar a::before{
  content:"";
  width:5px;height:5px;border-radius:50%;
  background:var(--line);
  transition:background .18s ease;
}
.anchor-bar a:hover::before{background:var(--accent)}

/* 通用区块 */
.section{padding:var(--section) 0}
.section + .section{padding-top:0}
.section-head{
  display:flex;
  align-items:flex-end;
  justify-content:space-between;
  gap:28px;
  padding-bottom:22px;
  border-bottom:1px solid var(--line);
  margin-bottom:44px;
}
.section-head .eyebrow{
  display:block;
  font-family:var(--mono);
  font-size:12px;
  letter-spacing:.08em;
  color:var(--accent);
  margin-bottom:12px;
}
.section-head h2{
  font-size:30px;
  font-weight:700;
  letter-spacing:-.01em;
}
.section-head p{
  font-size:15px;
  color:var(--muted);
  max-width:520px;
  line-height:1.75;
}

/* 按钮 */
.btn{
  display:inline-flex;
  align-items:center;
  gap:9px;
  height:46px;
  padding:0 26px;
  border-radius:var(--radius-btn);
  font-size:15px;
  font-weight:600;
  letter-spacing:.01em;
  transition:background .18s ease,color .18s ease,border-color .18s ease,transform .12s ease,filter .18s ease;
}
.btn i{transition:transform .18s ease}
.btn-primary{background:var(--accent);color:var(--accent-ink);border:1px solid var(--accent)}
.btn-primary:hover{background:#d9561f;border-color:#d9561f;color:var(--accent-ink);filter:brightness(.98)}
.btn-primary:hover i{transform:translateX(3px)}
.btn-primary:active{transform:translateY(1px)}
.btn-ghost{border:1px solid var(--ink);color:var(--ink);background:transparent;border-radius:10px;height:46px}
.btn-ghost:hover{background:var(--ink);color:#F6F3EE;border-color:var(--ink)}
.btn-ghost:hover i{transform:translateX(3px)}
.link-cta{
  font-size:15px;
  font-weight:600;
  color:var(--ink);
  text-decoration:underline;
  text-underline-offset:4px;
  text-decoration-thickness:1px;
  text-decoration-color:var(--line);
  transition:color .18s ease,text-decoration-color .18s ease;
}
.link-cta:hover{color:var(--accent);text-decoration-color:var(--accent)}

/* 徽章 / 标签 */
.badge{
  display:inline-flex;
  align-items:center;
  height:22px;
  padding:0 11px;
  border-radius:999px;
  border:1px solid var(--line);
  background:var(--paper-2);
  font-family:var(--mono);
  font-size:12px;
  letter-spacing:.06em;
  color:var(--muted);
  transition:background .18s ease,color .18s ease,border-color .18s ease;
}
.badge:hover{background:rgba(232,98,47,.10);color:var(--accent);border-color:rgba(232,98,47,.4)}
.badge-accent{background:rgba(232,98,47,.12);color:#B4441A;border-color:rgba(232,98,47,.32)}

/* ============ 对比双栏 ============ */
.compare{
  border:1px solid var(--line);
  border-radius:14px;
  overflow:hidden;
  background:var(--paper-2);
  box-shadow:var(--shadow-1);
}
.compare-head,
.compare-row{
  display:grid;
  grid-template-columns:1.05fr 1fr 1fr;
  gap:0;
}
.compare-head{
  background:var(--ink);
  color:#fff;
  align-items:center;
  padding:22px 0;
}
.compare-head .col{
  padding:0 26px;
  font-size:15px;
  font-weight:600;
  display:flex;
  align-items:center;
  gap:9px;
}
.compare-head .col i{color:var(--accent);font-size:14px}
.compare-head .col-feature{
  font-family:var(--mono);
  font-size:12px;
  letter-spacing:.08em;
  color:rgba(255,255,255,.55);
  font-weight:500;
}
.compare-row{
  border-top:1px solid var(--line);
  transition:background .18s ease;
}
.compare-row:hover{background:var(--paper)}
.compare-row .col{
  padding:20px 26px;
  font-size:15px;
  line-height:1.75;
  background:transparent;
}
.compare-row .col-feature{
  font-weight:600;
  color:var(--ink);
  font-size:15px;
  display:flex;
  align-items:flex-start;
  gap:10px;
}
.compare-row .col-feature .num{
  font-family:var(--mono);
  font-size:12px;
  color:var(--accent);
  letter-spacing:.06em;
  padding-top:4px;
}
.compare-row .col + .col{border-left:1px solid var(--line)}
.compare-row .col-a{background:rgba(246,243,238,.55)}
.compare-row .col-b{background:rgba(255,255,255,.6)}
.compare-row .col p{color:var(--ink-soft);font-size:14.5px}
.compare-note{
  padding:14px 26px 20px;
  font-size:13px;
  color:var(--muted);
  font-family:var(--mono);
  letter-spacing:.03em;
}

/* 三步自查 */
.steps{
  display:grid;
  grid-template-columns:repeat(3,1fr);
  gap:22px;
}
.step-card{
  background:var(--paper-2);
  border:1px solid var(--line);
  border-radius:var(--radius-card);
  padding:26px 24px;
  transition:transform .18s ease,box-shadow .18s ease,border-color .18s ease;
}
.step-card:hover{
  transform:translateY(-2px);
  box-shadow:var(--shadow-2);
  border-color:rgba(232,98,47,.35);
}
.step-card .num{
  font-family:var(--mono);
  font-size:13px;
  letter-spacing:.08em;
  color:var(--accent);
  display:block;
  margin-bottom:14px;
}
.step-card h3{font-size:19px;font-weight:600;margin-bottom:10px}
.step-card p{font-size:14.5px;color:var(--ink-soft)}

/* 迷你卡 */
.mini-grid{
  display:grid;
  grid-template-columns:repeat(4,1fr);
  gap:22px;
}
.mini-card{
  display:flex;
  flex-direction:column;
  background:var(--paper-2);
  border:1px solid var(--line);
  border-radius:var(--radius-card);
  overflow:hidden;
  transition:transform .18s ease,box-shadow .18s ease,border-color .18s ease;
}
.mini-card:hover{
  transform:translateY(-2px);
  box-shadow:var(--shadow-2);
  border-color:rgba(232,98,47,.35);
}
.mini-card figure{
  margin:0;
  aspect-ratio:4/3;
  overflow:hidden;
  background:var(--paper);
}
.mini-card img{
  width:100%;height:100%;
  object-fit:cover;
  border-radius:0;
  transition:transform .5s cubic-bezier(.22,.61,.36,1);
}
.mini-card:hover img{transform:scale(1.03)}
.mini-body{padding:20px;display:flex;flex-direction:column;gap:10px;flex:1}
.mini-body h3{font-size:17px;font-weight:600;line-height:1.45}
.mini-body p{font-size:14px;color:var(--muted);line-height:1.7;flex:1}
.mini-body .mini-meta{
  font-family:var(--mono);
  font-size:12px;
  letter-spacing:.06em;
  color:var(--accent);
}

/* 提示条 */
.notice{
  display:flex;
  gap:16px;
  align-items:flex-start;
  background:var(--paper-2);
  border:1px solid var(--line);
  border-left:3px solid var(--accent);
  border-radius:10px;
  padding:20px 24px;
  margin-top:32px;
}
.notice i{color:var(--accent);font-size:16px;padding-top:4px}
.notice p{font-size:14.5px;color:var(--ink-soft)}
.notice strong{color:var(--ink)}

/* FAQ */
.faq{max-width:860px}
.faq-item{
  border:1px solid var(--line);
  border-radius:var(--radius-card);
  background:var(--paper-2);
  margin-bottom:14px;
  overflow:hidden;
  transition:border-color .18s ease,box-shadow .18s ease;
}
.faq-item[open]{
  border-color:rgba(232,98,47,.4);
  box-shadow:var(--shadow-1);
}
.faq-item summary{
  list-style:none;
  cursor:pointer;
  display:flex;
  align-items:center;
  justify-content:space-between;
  gap:20px;
  padding:20px 24px;
  font-size:17px;
  font-weight:600;
  color:var(--ink);
  transition:color .18s ease;
}
.faq-item summary::-webkit-details-marker{display:none}
.faq-item summary:hover{color:var(--accent)}
.faq-item summary .arrow{
  flex:0 0 auto;
  width:26px;height:26px;
  display:grid;place-items:center;
  border-radius:50%;
  border:1px solid var(--line);
  font-size:11px;
  color:var(--muted);
  transition:transform .22s ease,color .18s ease,border-color .18s ease;
}
.faq-item[open] summary .arrow{transform:rotate(180deg);color:var(--accent);border-color:rgba(232,98,47,.5)}
.faq-answer{
  padding:0 24px 22px;
  font-size:15px;
  color:var(--ink-soft);
  border-top:1px solid var(--line);
  padding-top:18px;
  margin-top:0;
}

/* 相关分类胶囊 */
.related{
  display:flex;
  flex-wrap:wrap;
  gap:12px;
  margin-top:8px;
}
.related a{
  display:inline-flex;
  align-items:center;
  gap:8px;
  height:42px;
  padding:0 20px;
  border-radius:999px;
  border:1px solid var(--line);
  background:var(--paper-2);
  font-size:14.5px;
  font-weight:600;
  color:var(--ink);
  box-shadow:var(--shadow-1);
  transition:border-color .18s ease,color .18s ease,transform .18s ease;
}
.related a:hover{
  border-color:rgba(232,98,47,.55);
  color:var(--accent);
  transform:translateY(-2px);
}
.related a i{font-size:12px;color:var(--accent)}

/* CTA 带 */
.cta-band{
  background:var(--ink);
  border-radius:16px;
  padding:48px 46px;
  display:flex;
  align-items:center;
  justify-content:space-between;
  gap:36px;
  flex-wrap:wrap;
  position:relative;
  overflow:hidden;
}
.cta-band::after{
  content:"";
  position:absolute;
  right:-90px;top:-90px;
  width:260px;height:260px;
  border-radius:50%;
  background:rgba(232,98,47,.14);
}
.cta-band .cta-text{position:relative;z-index:2}
.cta-band h2{
  color:#fff;
  font-size:28px;
  font-weight:700;
  margin-bottom:12px;
}
.cta-band p{
  color:rgba(255,255,255,.72);
  font-size:15px;
  max-width:560px;
}
.cta-band .cta-actions{
  position:relative;z-index:2;
  display:flex;
  gap:14px;
  flex-wrap:wrap;
}
.cta-band .btn-ghost{border-color:rgba(255,255,255,.55);color:#fff}
.cta-band .btn-ghost:hover{background:#fff;color:var(--ink);border-color:#fff}

/* ============ 页脚 ============ */
.site-footer{
  margin-top:var(--section);
  background:var(--ink);
  color:rgba(255,255,255,.68);
  padding:64px 0 26px;
}
.footer-grid{
  width:100%;
  max-width:1200px;
  margin:0 auto;
  padding:0 32px;
  display:grid;
  grid-template-columns:1.5fr 1fr 1fr 1fr;
  gap:40px;
}
.footer-brand .brand-name{color:#fff;font-size:18px;font-weight:800;display:block;margin-bottom:12px}
.footer-brand p{font-size:14px;line-height:1.75;color:rgba(255,255,255,.6);max-width:260px}
.footer-col h3{
  font-family:var(--mono);
  font-size:13px;
  letter-spacing:.08em;
  color:var(--accent);
  font-weight:500;
  margin-bottom:18px;
}
.footer-col ul{display:flex;flex-direction:column;gap:11px}
.footer-col a{
  font-size:14px;
  color:rgba(255,255,255,.68);
  transition:color .18s ease;
}
.footer-col a:hover{color:var(--accent)}
.footer-col .plain{font-size:14px;color:rgba(255,255,255,.6)}
.footer-bottom{
  width:100%;
  max-width:1200px;
  margin:46px auto 0;
  padding:22px 32px 0;
  border-top:1px solid rgba(255,255,255,.1);
  display:flex;
  align-items:center;
  justify-content:space-between;
  gap:16px;
  flex-wrap:wrap;
  font-family:var(--mono);
  font-size:12px;
  letter-spacing:.04em;
  color:rgba(255,255,255,.45);
}

/* 入场动效 */
.reveal{
  opacity:0;
  transform:translateY(12px);
  transition:opacity .4s cubic-bezier(.22,.61,.36,1),transform .4s cubic-bezier(.22,.61,.36,1);
}
.reveal.is-in{opacity:1;transform:none}

/* ============ 响应式 ============ */
@media (max-width:1279px){
  .hero h1{font-size:44px}
  .mini-grid{grid-template-columns:repeat(2,1fr)}
  .footer-grid{grid-template-columns:1.4fr 1fr 1fr;gap:32px}
  .footer-col:last-child{grid-column:span 3}
}
@media (max-width:1023px){
  :root{--section:64px}
  .side-nav{display:none}
  .main-col{margin-left:0}
  .topbar{display:flex}
  .hero-grid{grid-template-columns:1fr;gap:36px;padding:28px 0 52px}
  .hero h1{font-size:36px}
  .hero::after{font-size:130px;bottom:-28px}
  .hero-media{aspect-ratio:16/10}
  .steps{grid-template-columns:1fr;gap:16px}
  .compare-row .col{padding:18px 20px}
  .compare-head .col{padding:0 20px}
  .cta-band{padding:38px 30px}
  .section-head{flex-direction:column;align-items:flex-start;gap:14px}
}
@media (max-width:640px){
  :root{--section:52px}
  .wrap{padding:0 20px}
  .footer-grid,.footer-bottom{padding-left:20px;padding-right:20px}
  .hero h1{font-size:30px}
  .hero-sub{font-size:17px}
  .hero::after{display:none}
  .hero-stats{gap:22px}
  .hero-stats .stat b{font-size:22px}
  .section-head h2{font-size:23px}
  .compare-head{display:none}
  .compare-row{grid-template-columns:1fr;padding:6px 0}
  .compare-row .col{border-left:0 !important;padding:12px 20px}
  .compare-row .col + .col{border-top:1px dashed var(--line)}
  .compare-row .col-a,
  .compare-row .col-b{padding-top:12px}
  .compare-row .col-a::before,
  .compare-row .col-b::before{
    display:block;
    font-family:var(--mono);
    font-size:11px;
    letter-spacing:.08em;
    color:var(--muted);
    margin-bottom:6px;
  }
  .compare-row .col-a::before{content:"手机浏览器"}
  .compare-row .col-b::before{content:"电脑浏览器"}
  .mini-grid{grid-template-columns:1fr}
  .cta-band{padding:30px 22px}
  .cta-band h2{font-size:22px}
  .cta-band .cta-actions{width:100%}
  .cta-band .cta-actions .btn{width:100%;justify-content:center}
  .footer-grid{grid-template-columns:1fr;gap:28px}
  .footer-col:last-child{grid-column:auto}
  .crumb{padding-top:22px;flex-wrap:wrap}
}
@media (prefers-reduced-motion:reduce){
  *{animation:none !important;transition:none !important;scroll-behavior:auto !important}
  .reveal{opacity:1;transform:none}
}

/* roulang page: category4 */
:root{
  --ink:#0D1F1D;
  --ink-soft:#2B3330;
  --paper:#F6F3EE;
  --paper-2:#FFFFFF;
  --accent:#E8622F;
  --accent-ink:#0D1F1D;
  --line:#E3DED6;
  --muted:#7C8580;
  --danger:#B4341F;
  --shadow-1:0 1px 2px rgba(13,31,29,.05);
  --shadow-2:0 12px 28px rgba(13,31,29,.10);
  --r-card:12px;
  --r-img:10px;
  --r-sm:10px;
  --r-pill:999px;
  --sidebar:236px;
  --topbar:56px;
  --mono:"SFMono-Regular","JetBrains Mono",Consolas,"Liberation Mono",Menlo,monospace;
  --sans:"PingFang SC","HarmonyOS Sans SC","Microsoft YaHei",system-ui,-apple-system,"Segoe UI",sans-serif;
}
*,*::before,*::after{box-sizing:border-box;}
html{-webkit-text-size-adjust:100%;scroll-behavior:smooth;}
body{
  margin:0;
  background:var(--paper);
  color:var(--ink-soft);
  font-family:var(--sans);
  font-size:16px;
  line-height:1.85;
  -webkit-font-smoothing:antialiased;
}
h1,h2,h3,h4{color:var(--ink);margin:0 0 12px;font-weight:700;line-height:1.28;}
p{margin:0 0 16px;}
a{color:var(--ink-soft);text-decoration:none;transition:color .18s ease;}
a:hover,a:focus{color:var(--accent);}
img{max-width:100%;display:block;}
ul,ol{margin:0 0 16px;padding-left:1.2em;}
button{font:inherit;}
:focus-visible{outline:2px solid var(--accent);outline-offset:3px;}
.skip-link{
  position:absolute;left:-9999px;top:0;background:var(--ink);color:#fff;
  padding:10px 18px;border-radius:0 0 10px 0;z-index:999;
}
.skip-link:focus{left:0;color:#fff;}

/* ---------- 侧栏 App Shell ---------- */
.side-nav{
  position:fixed;left:0;top:0;bottom:0;width:var(--sidebar);
  background:var(--ink);color:rgba(255,255,255,.78);
  display:flex;flex-direction:column;z-index:200;
}
.side-nav__brand{
  height:88px;flex:0 0 88px;display:flex;flex-direction:column;justify-content:center;
  padding:0 22px;border-bottom:1px solid rgba(255,255,255,.08);
}
.side-nav__brand a{font-size:19px;font-weight:800;color:#fff;letter-spacing:.02em;}
.side-nav__brand a:hover{color:var(--accent);}
.side-nav__brand span{
  font-family:var(--mono);font-size:11px;letter-spacing:.16em;
  color:rgba(255,255,255,.42);text-transform:uppercase;margin-top:5px;
}
.side-nav__menu{list-style:none;margin:14px 0 0;padding:0 12px;flex:1 1 auto;overflow-y:auto;}
.side-nav__menu li{margin:0 0 4px;}
.side-nav__menu a{
  position:relative;display:flex;align-items:center;gap:11px;
  height:46px;padding:0 12px;border-radius:8px;
  font-size:15px;font-weight:600;color:rgba(255,255,255,.72);
  transition:background .18s ease,color .18s ease;
}
.side-nav__menu a i{width:16px;font-size:13px;color:rgba(255,255,255,.38);transition:color .18s ease;}
.side-nav__menu a:hover{background:rgba(255,255,255,.06);color:#fff;}
.side-nav__menu a:hover i{color:var(--accent);}
.side-nav__menu a.is-active{background:rgba(255,255,255,.06);color:#fff;}
.side-nav__menu a.is-active i{color:var(--accent);}
.side-nav__menu a.is-active::before{
  content:"";position:absolute;left:-12px;top:9px;bottom:9px;width:3px;
  background:var(--accent);border-radius:0 3px 3px 0;
}
.side-nav__foot{
  display:flex;gap:10px;padding:16px 22px 22px;
  border-top:1px solid rgba(255,255,255,.08);
}
.side-nav__foot button{
  flex:1;height:40px;border-radius:var(--r-sm);cursor:pointer;
  background:rgba(255,255,255,.05);border:1px solid rgba(255,255,255,.14);
  color:rgba(255,255,255,.75);font-size:13px;
  transition:color .18s ease,border-color .18s ease,background .18s ease;
}
.side-nav__foot button:hover{color:var(--accent);border-color:rgba(232,98,47,.55);background:rgba(232,98,47,.08);}
.nav-scrim{display:none;}

/* ---------- 移动端顶栏 ---------- */
.topbar{display:none;}

/* ---------- 主内容 ---------- */
.main-col{margin-left:var(--sidebar);min-height:100vh;display:flex;flex-direction:column;}
.container{width:100%;max-width:1200px;margin:0 auto;padding:0 32px;}

/* ---------- Hero ---------- */
.hero{position:relative;overflow:hidden;background:var(--paper-2);border-bottom:1px solid var(--line);}
.hero__bg{
  position:absolute;inset:0;
  background-image:url('/assets/images/backpic/back-2.png');
  background-size:cover;background-position:center right;
  opacity:.16;
}
.hero__inner{position:relative;padding:76px 0 60px;}
.hero__eyebrow{
  font-family:var(--mono);font-size:12px;letter-spacing:.16em;
  color:var(--accent);text-transform:uppercase;
}
.hero h1{
  font-size:clamp(30px,4.2vw,52px);font-weight:800;line-height:1.14;
  margin:18px 0 18px;max-width:20em;letter-spacing:-.01em;
}
.hero__lead{font-size:18px;line-height:1.8;max-width:46em;color:var(--ink-soft);}
.hero__actions{display:flex;flex-wrap:wrap;gap:14px;margin-top:30px;}
.hero__meta{
  display:flex;flex-wrap:wrap;gap:24px;margin-top:38px;padding-top:24px;
  border-top:1px solid var(--line);
}
.hero__meta div{font-family:var(--mono);font-size:12.5px;letter-spacing:.05em;color:var(--muted);}
.hero__meta strong{display:block;font-family:var(--sans);font-size:22px;font-weight:800;color:var(--ink);letter-spacing:0;}

/* ---------- 按钮 ---------- */
.btn{
  display:inline-flex;align-items:center;gap:9px;height:46px;padding:0 26px;
  border-radius:var(--r-pill);font-size:15px;font-weight:600;
  border:1px solid transparent;cursor:pointer;
  transition:background .16s ease,color .16s ease,border-color .16s ease,transform .16s ease,filter .16s ease;
}
.btn i{transition:transform .16s ease;}
.btn-primary{background:var(--accent);color:var(--accent-ink);}
.btn-primary:hover{filter:brightness(.94);color:var(--accent-ink);}
.btn-primary:hover i.fa-arrow-right{transform:translateX(3px);}
.btn-ghost{background:transparent;color:var(--ink);border-color:var(--ink);}
.btn-ghost:hover{background:var(--ink);color:var(--paper);}
.btn:active{transform:translateY(1px);}
.link-cta{
  display:inline-flex;align-items:center;gap:6px;font-size:15px;font-weight:600;
  color:var(--ink);text-decoration:underline;text-underline-offset:4px;
  text-decoration-color:var(--line);
}
.link-cta:hover{color:var(--accent);text-decoration-color:var(--accent);}

/* ---------- 锚点条 ---------- */
.anchor-bar{background:var(--paper);border-bottom:1px solid var(--line);}
.anchor-bar ul{
  list-style:none;margin:0;padding:0;display:flex;flex-wrap:wrap;gap:32px;
}
.anchor-bar a{
  display:inline-block;padding:18px 0;font-size:14px;font-weight:600;color:var(--muted);
  border-bottom:2px solid transparent;transition:color .16s ease,border-color .16s ease;
}
.anchor-bar a:hover{color:var(--accent);border-color:var(--accent);}

/* ---------- 板块 ---------- */
.section{padding:88px 0;}
.section--tint{background:var(--paper-2);border-top:1px solid var(--line);border-bottom:1px solid var(--line);}
.section-head{max-width:780px;margin-bottom:44px;}
.section-head .kicker{
  display:block;font-family:var(--mono);font-size:12px;letter-spacing:.16em;
  color:var(--accent);text-transform:uppercase;margin-bottom:12px;
}
.section-head h2{font-size:clamp(22px,2.8vw,32px);font-weight:700;margin:0 0 14px;}
.section-head p{margin:0;color:var(--muted);font-size:16px;}

/* ---------- 卡片 ---------- */
.card{
  height:100%;display:flex;flex-direction:column;overflow:hidden;
  background:var(--paper-2);border:1px solid var(--line);border-radius:var(--r-card);
  transition:transform .2s ease,box-shadow .2s ease,border-color .2s ease;
}
.card:hover{transform:translateY(-2px);box-shadow:var(--shadow-2);border-color:rgba(232,98,47,.35);}
.card__media{aspect-ratio:16/10;overflow:hidden;background:var(--paper);}
.card__media img{width:100%;height:100%;object-fit:cover;transition:transform .5s cubic-bezier(.22,.61,.36,1);}
.card:hover .card__media img{transform:scale(1.03);}
.card__body{padding:22px;display:flex;flex-direction:column;gap:10px;flex:1 1 auto;}
.card__body h3{font-size:19px;font-weight:600;margin:0;}
.card__body p{margin:0;font-size:15px;color:var(--muted);line-height:1.8;}
.card__body .badge{align-self:flex-start;margin-top:auto;}

.badge{
  display:inline-flex;align-items:center;height:22px;padding:0 10px;
  border-radius:var(--r-pill);border:1px solid var(--line);background:var(--paper);
  font-family:var(--mono);font-size:12px;letter-spacing:.04em;color:var(--muted);
  transition:background .18s ease,border-color .18s ease,color .18s ease;
}
.badge:hover{background:rgba(232,98,47,.1);border-color:rgba(232,98,47,.4);color:var(--accent);}

/* ---------- 时间轴 ---------- */
.timeline{list-style:none;margin:0;padding:0 0 0 100px;position:relative;}
.timeline::before{
  content:"";position:absolute;left:60px;top:10px;bottom:10px;width:1px;background:var(--line);
}
.timeline__item{position:relative;padding-bottom:38px;}
.timeline__item:last-child{padding-bottom:0;}
.timeline__item::before{
  content:"";position:absolute;left:-45px;top:9px;width:11px;height:11px;border-radius:50%;
  background:var(--paper-2);border:2px solid var(--line);
  transition:background .18s ease,border-color .18s ease,transform .18s ease;
}
.timeline__item:hover::before{background:var(--accent);border-color:var(--accent);transform:scale(1.12);}
.timeline__index{
  position:absolute;left:-100px;top:2px;width:44px;text-align:right;
  font-family:var(--mono);font-size:13px;font-weight:600;letter-spacing:.08em;
  color:var(--muted);transition:color .18s ease;
}
.timeline__item:hover .timeline__index{color:var(--accent);}
.timeline__body h3{font-size:20px;font-weight:600;margin:0 0 8px;}
.timeline__body p{margin:0 0 12px;font-size:15.5px;color:var(--ink-soft);line-height:1.85;}

/* ---------- 进度条 ---------- */
.meter{background:var(--paper-2);border:1px solid var(--line);border-radius:var(--r-card);padding:24px;}
.meter__row{margin-bottom:20px;}
.meter__row:last-child{margin-bottom:0;}
.meter__head{
  display:flex;justify-content:space-between;align-items:baseline;gap:12px;margin-bottom:8px;
}
.meter__head span:first-child{font-size:15px;font-weight:600;color:var(--ink);}
.meter__val{font-family:var(--mono);font-size:12px;letter-spacing:.05em;color:var(--muted);}
.meter__track{height:6px;border-radius:var(--r-pill);background:var(--line);overflow:hidden;}
.meter__fill{display:block;height:100%;border-radius:var(--r-pill);background:var(--accent);}
.meter__fill--soft{background:#B9B2A8;}

/* ---------- 处理清单 ---------- */
.check-list{list-style:none;margin:0;padding:0;}
.check-list li{
  display:flex;gap:16px;padding:18px 0;border-bottom:1px solid var(--line);
}
.check-list li:first-child{padding-top:0;}
.check-list li:last-child{border-bottom:0;padding-bottom:0;}
.check-list i{
  flex:0 0 auto;width:26px;height:26px;border-radius:50%;
  display:inline-flex;align-items:center;justify-content:center;
  background:rgba(232,98,47,.1);color:var(--accent);font-size:12px;margin-top:4px;
}
.check-list strong{display:block;font-size:16px;color:var(--ink);margin-bottom:2px;}
.check-list span{font-size:14.5px;color:var(--muted);line-height:1.75;}

/* ---------- FAQ ---------- */
.faq{max-width:820px;}
.faq details{
  background:var(--paper-2);border:1px solid var(--line);border-radius:var(--r-card);
  padding:0 22px;margin-bottom:12px;
  transition:border-color .2s ease,box-shadow .2s ease;
}
.faq details[open]{border-color:rgba(232,98,47,.35);box-shadow:var(--shadow-1);}
.faq summary{
  list-style:none;cursor:pointer;display:flex;justify-content:space-between;
  align-items:center;gap:16px;padding:20px 0;
  font-size:17px;font-weight:600;color:var(--ink);
}
.faq summary::-webkit-details-marker{display:none;}
.faq summary::after{
  content:"\f067";font-family:"Font Awesome 6 Free";font-weight:900;
  font-size:13px;color:var(--muted);transition:color .2s ease,transform .2s ease;
}
.faq details[open] summary::after{content:"\f068";color:var(--accent);}
.faq__body{
  padding:16px 0 22px;border-top:1px solid var(--line);
  font-size:15.5px;color:var(--ink-soft);line-height:1.85;
}
.faq__body p:last-child{margin-bottom:0;}

/* ---------- 胶囊链接 ---------- */
.chip-links{display:flex;flex-wrap:wrap;gap:12px;}
.chip{
  display:inline-flex;align-items:center;gap:8px;height:42px;padding:0 20px;
  border-radius:var(--r-pill);border:1px solid var(--line);background:var(--paper-2);
  font-size:14px;font-weight:600;color:var(--ink);
  transition:border-color .18s ease,color .18s ease,transform .18s ease,box-shadow .18s ease;
}
.chip:hover{border-color:var(--accent);color:var(--accent);transform:translateY(-1px);box-shadow:var(--shadow-1);}
.chip i{font-size:12px;color:var(--muted);transition:color .18s ease;}
.chip:hover i{color:var(--accent);}

/* ---------- CTA 带 ---------- */
.cta-band{
  background:var(--ink);color:rgba(255,255,255,.74);
  border-radius:16px;padding:48px;
  display:flex;align-items:center;justify-content:space-between;gap:34px;flex-wrap:wrap;
}
.cta-band h2{color:#fff;font-size:clamp(20px,2.4vw,28px);margin:0 0 10px;}
.cta-band p{margin:0;max-width:46em;font-size:15.5px;color:rgba(255,255,255,.68);}
.cta-band__actions{display:flex;flex-wrap:wrap;gap:14px;}
.cta-band .btn-ghost{color:#fff;border-color:rgba(255,255,255,.5);}
.cta-band .btn-ghost:hover{background:#fff;color:var(--ink);border-color:#fff;}

/* ---------- 页脚 ---------- */
.site-footer{background:var(--ink);color:rgba(255,255,255,.68);padding:64px 0 0;margin-top:auto;}
.site-footer__grid{display:grid;grid-template-columns:1.5fr 1fr 1fr 1.1fr;gap:36px;}
.site-footer h4{
  font-family:var(--mono);font-size:13px;font-weight:600;letter-spacing:.08em;
  color:var(--accent);margin:0 0 16px;
}
.site-footer p{margin:0;font-size:14.5px;line-height:1.8;color:rgba(255,255,255,.6);}
.site-footer .brand-name{font-size:19px;font-weight:800;color:#fff;display:block;margin-bottom:10px;}
.site-footer ul{list-style:none;margin:0;padding:0;}
.site-footer li{margin-bottom:10px;font-size:14.5px;}
.site-footer a{color:rgba(255,255,255,.68);}
.site-footer a:hover{color:var(--accent);}
.site-footer__bottom{
  border-top:1px solid rgba(255,255,255,.12);margin-top:48px;padding:20px 0;
  display:flex;justify-content:space-between;gap:16px;flex-wrap:wrap;
  font-family:var(--mono);font-size:12.5px;letter-spacing:.04em;color:rgba(255,255,255,.5);
}

/* ---------- 弹窗 ---------- */
.reveal{
  position:fixed;left:0;right:0;top:12vh;margin:0 auto;
  max-width:520px;width:calc(100% - 32px);
  background:var(--paper-2);border:1px solid var(--line);border-radius:14px;
  padding:30px;display:none;z-index:1400;box-shadow:var(--shadow-2);
}
.reveal.is-open{display:block;}
.reveal h3{font-size:20px;margin:0 0 10px;}
.reveal p{font-size:14.5px;color:var(--muted);margin:0 0 18px;}
.share-field{
  width:100%;height:48px;border-radius:var(--r-sm);border:1px solid var(--line);
  padding:0 14px;font-family:var(--mono);font-size:13px;color:var(--ink-soft);
  background:var(--paper);margin-bottom:18px;
}
.share-field:focus{outline:none;border-color:var(--accent);box-shadow:0 0 0 3px rgba(232,98,47,.18);}
.reveal__actions{display:flex;flex-wrap:wrap;gap:12px;}
.reveal__close{
  position:absolute;right:14px;top:14px;width:36px;height:36px;border-radius:50%;
  border:1px solid var(--line);background:var(--paper);color:var(--muted);
  cursor:pointer;font-size:15px;line-height:1;
}
.reveal__close:hover{color:var(--accent);border-color:rgba(232,98,47,.45);}

/* ---------- 动效降级 ---------- */
@media (prefers-reduced-motion:reduce){
  *,*::before,*::after{animation-duration:.001ms !important;transition-duration:.001ms !important;}
  html{scroll-behavior:auto;}
}

/* ---------- 断点 ---------- */
@media (max-width:1279px){
  .site-footer__grid{grid-template-columns:1.4fr 1fr 1fr;gap:30px;}
}
@media (max-width:1023px){
  .side-nav{
    width:280px;transform:translateX(-100%);
    transition:transform .24s cubic-bezier(.22,.61,.36,1);
    box-shadow:var(--shadow-2);
  }
  .side-nav.is-open{transform:translateX(0);}
  .nav-scrim{
    display:block;position:fixed;inset:0;background:rgba(13,31,29,.52);
    opacity:0;visibility:hidden;transition:opacity .24s ease,visibility .24s ease;z-index:150;
  }
  .nav-scrim.is-open{opacity:1;visibility:visible;}
  .topbar{
    display:flex;align-items:center;justify-content:space-between;
    position:fixed;top:0;left:0;right:0;height:var(--topbar);
    background:var(--ink);color:#fff;padding:0 6px;z-index:300;
  }
  .topbar-brand{font-size:16px;font-weight:700;letter-spacing:.02em;}
  .topbar-btn{
    width:44px;height:44px;display:inline-flex;align-items:center;justify-content:center;
    background:none;border:0;color:#fff;font-size:17px;cursor:pointer;border-radius:8px;
  }
  .topbar-btn:hover{color:var(--accent);background:rgba(255,255,255,.06);}
  .main-col{margin-left:0;padding-top:var(--topbar);}
  .container{padding:0 22px;}
  .section{padding:64px 0;}
  .hero__inner{padding:56px 0 46px;}
  .timeline{padding-left:78px;}
  .timeline::before{left:46px;}
  .timeline__item::before{left:-36px;}
  .timeline__index{left:-78px;width:36px;}
  .site-footer__grid{grid-template-columns:1fr 1fr;}
  .cta-band{padding:36px;}
}
@media (max-width:640px){
  .container{padding:0 16px;}
  .section{padding:52px 0;}
  .hero h1{font-size:30px;}
  .hero__lead{font-size:16.5px;}
  .hero__meta{gap:18px;}
  .hero__meta strong{font-size:19px;}
  .anchor-bar ul{gap:20px;}
  .anchor-bar a{padding:14px 0;font-size:13.5px;}
  .timeline{padding-left:34px;}
  .timeline::before{left:8px;}
  .timeline__item::before{left:-31px;top:7px;}
  .timeline__index{
    position:static;display:block;width:auto;text-align:left;
    margin-bottom:6px;color:var(--accent);
  }
  .timeline__body h3{font-size:18px;}
  .cta-band{padding:28px 22px;border-radius:12px;}
  .cta-band__actions{width:100%;}
  .cta-band .btn{flex:1 1 auto;justify-content:center;}
  .site-footer__grid{grid-template-columns:1fr;gap:28px;}
  .site-footer__bottom{flex-direction:column;gap:6px;}
  .faq summary{font-size:16px;padding:18px 0;}
  .reveal{padding:24px 20px;}
}
@media (max-width:520px){
  .hero__actions .btn{width:100%;justify-content:center;}
  .chip{width:100%;justify-content:space-between;}
}