/* roulang page: index */
:root{
  --brand:#C9743C;
  --brand-dark:#9E5527;
  --brand-light:#F3DCC8;
  --accent:#376B63;
  --accent-light:#DCE8E4;
  --bg:#F7F3ED;
  --card:#FFFFFF;
  --card-2:#EFE8DE;
  --ink:#23201C;
  --ink-soft:#6B625A;
  --line:#E2D9CD;
  --gold:#E8B44A;
  --grad-brand:linear-gradient(135deg,#C9743C 0%,#E8B44A 100%);
  --grad-soft:linear-gradient(135deg,#F3DCC8 0%,#DCE8E4 100%);
  --r-lg:24px;
  --r-md:16px;
  --r-sm:12px;
  --r-pill:999px;
  --sh:0 1px 2px rgba(35,32,28,.04),0 12px 32px -12px rgba(35,32,28,.14);
  --sh-hover:0 2px 6px rgba(35,32,28,.06),0 22px 44px -16px rgba(35,32,28,.22);
  --gap-block:96px;
  --nav-w:264px;
}
*,*::before,*::after{box-sizing:border-box}
html{-webkit-text-size-adjust:100%;scroll-behavior:smooth}
body{
  margin:0;
  font-family:"PingFang SC","Microsoft YaHei","Noto Sans SC",system-ui,-apple-system,"Helvetica Neue",Arial,sans-serif;
  font-size:16px;
  line-height:1.9;
  color:var(--ink);
  background:var(--bg);
  -webkit-font-smoothing:antialiased;
}
body.foundation,html.foundation{background:var(--bg)}
h1,h2,h3,h4,p,ul,ol,figure{margin:0}
ul,ol{padding:0;list-style:none}
a{color:inherit;text-decoration:none;transition:color .2s ease}
a:hover{color:var(--brand-dark)}
img{display:block;max-width:100%;height:auto}
button,input,textarea,select{font-family:inherit;font-size:inherit;color:inherit}
button{cursor:pointer}
a:focus-visible,button:focus-visible,input:focus-visible,.accordion-title:focus-visible{
  outline:2px solid var(--brand);
  outline-offset:2px;
  box-shadow:0 0 0 4px rgba(243,220,200,.85);
  border-radius:6px;
}
::selection{background:var(--brand-light);color:var(--brand-dark)}

/* ---------- 布局骨架 ---------- */
.side-nav{
  position:fixed;top:0;left:0;width:var(--nav-w);height:100vh;
  background:var(--card);border-right:1px solid var(--line);
  display:flex;flex-direction:column;z-index:80;
}
.page{margin-left:var(--nav-w);min-height:100vh;display:flex;flex-direction:column}
.container{width:100%;max-width:1200px;margin:0 auto;padding:0 48px}
main{flex:1 1 auto}

/* ---------- 侧边品牌区 ---------- */
.brand{height:96px;flex:0 0 auto;display:flex;align-items:center;gap:12px;padding:0 20px;border-bottom:1px solid var(--line)}
.brand-mark{
  width:38px;height:38px;border-radius:12px;background:var(--grad-brand);color:#fff;
  display:inline-flex;align-items:center;justify-content:center;font-size:15px;flex:0 0 auto;
  box-shadow:0 10px 20px -10px rgba(201,116,60,.85);
}
.brand-text strong{display:block;font-size:16px;font-weight:700;line-height:1.25;letter-spacing:.02em}
.brand-text em{display:block;font-style:normal;font-size:11px;letter-spacing:.08em;opacity:.7;white-space:nowrap;line-height:1.5}

/* ---------- 侧边导航 ---------- */
.nav-list{flex:1 1 auto;overflow-y:auto;padding:18px 12px;display:flex;flex-direction:column;gap:6px}
.nav-item{
  position:relative;display:flex;align-items:center;gap:12px;height:48px;padding:0 20px;
  border-radius:12px;font-size:15px;font-weight:500;color:var(--ink-soft);transition:background .2s ease,color .2s ease;
}
.nav-item i{width:18px;text-align:center;font-size:14px;color:var(--brand)}
.nav-item:hover{background:var(--bg);color:var(--ink)}
.nav-item.is-active{background:var(--brand-light);color:var(--ink);font-weight:600}
.nav-item.is-active::before{
  content:"";position:absolute;left:4px;top:11px;bottom:11px;width:4px;border-radius:var(--r-pill);background:var(--grad-brand);
}
.nav-foot{flex:0 0 auto;padding:20px;border-top:1px solid var(--line)}
.nav-cta{
  display:flex;align-items:center;justify-content:center;gap:8px;height:44px;border-radius:var(--r-pill);
  background:var(--ink);color:#F7F3ED;font-size:14px;font-weight:600;transition:background .2s ease,transform .2s ease;
}
.nav-cta:hover{background:var(--brand-dark);color:#fff;transform:translateY(-2px)}
.nav-foot p{margin-top:12px;font-size:12px;line-height:1.7;color:var(--ink-soft)}

/* ---------- 移动端顶栏 ---------- */
.m-header{display:none}
.nav-overlay{display:none}

/* ---------- 通用按钮 ---------- */
.btn{
  display:inline-flex;align-items:center;justify-content:center;gap:8px;height:48px;padding:0 26px;
  border:0;border-radius:var(--r-pill);font-size:15px;font-weight:600;letter-spacing:.01em;
  transition:transform .2s ease,box-shadow .2s ease,background .2s ease,color .2s ease;white-space:nowrap;
}
.btn-primary{background:var(--grad-brand);color:#fff;box-shadow:0 12px 26px -14px rgba(201,116,60,.95)}
.btn-primary:hover{color:#fff;transform:translateY(-3px);box-shadow:0 18px 34px -16px rgba(201,116,60,.95)}
.btn-ghost{background:transparent;color:var(--brand-dark);border:1.5px solid var(--brand)}
.btn-ghost:hover{background:var(--brand-light);color:var(--brand-dark);transform:translateY(-3px)}
.btn-dark{background:var(--ink);color:#F7F3ED}
.btn-dark:hover{background:var(--brand-dark);color:#fff;transform:translateY(-3px)}
.btn-sm{height:42px;padding:0 20px;font-size:14px}
.btn-block{width:100%}

/* ---------- 区块与标题 ---------- */
.block{margin-bottom:var(--gap-block)}
.block-head{margin-bottom:32px}
.block-head h2{
  position:relative;padding-left:16px;font-size:26px;font-weight:700;line-height:1.35;letter-spacing:.01em;
}
.block-head h2::before{
  content:"";position:absolute;left:0;top:6px;bottom:6px;width:4px;border-radius:var(--r-pill);background:var(--grad-brand);
}
.block-head p{margin-top:10px;font-size:15px;color:var(--ink-soft);max-width:56em}
.eyebrow{
  display:inline-flex;align-items:center;gap:8px;height:32px;padding:0 14px;border-radius:var(--r-pill);
  background:var(--brand-light);color:var(--brand-dark);font-size:12px;font-weight:700;letter-spacing:.04em;
}
.tag{
  display:inline-block;padding:3px 10px;border-radius:var(--r-pill);background:var(--accent-light);color:var(--accent);
  font-size:12px;font-weight:600;line-height:1.7;
}

/* ---------- 首屏 Hero ---------- */
.hero{display:grid;grid-template-columns:7fr 5fr;gap:44px;align-items:center;padding-top:48px}
.hero-media{position:relative;border-radius:var(--r-lg);overflow:hidden;aspect-ratio:16/9;box-shadow:var(--sh);background:var(--card-2)}
.hero-media img{width:100%;height:100%;object-fit:cover}
.hero-media::after{
  content:"";position:absolute;left:0;right:0;bottom:0;height:44%;
  background:linear-gradient(to top,rgba(35,32,28,.55),rgba(35,32,28,0));
}
.hero-media-badges{position:absolute;left:20px;bottom:20px;z-index:2;display:flex;flex-wrap:wrap;gap:10px}
.live-badge{
  display:inline-flex;align-items:center;gap:7px;padding:7px 14px;border-radius:var(--r-pill);
  background:var(--grad-brand);color:#fff;font-size:12px;font-weight:700;letter-spacing:.06em;
}
.live-badge i{font-size:9px}
.media-pill{
  display:inline-flex;align-items:center;padding:7px 14px;border-radius:var(--r-pill);
  background:rgba(255,255,255,.93);color:var(--ink);font-size:12px;font-weight:600;
}
.hero-copy h1{margin:16px 0 14px;font-size:clamp(30px,4vw,46px);font-weight:700;line-height:1.35;letter-spacing:.005em}
.hero-sub{font-size:16px;color:var(--ink-soft);max-width:36em}

/* ---------- 倒计时 ---------- */
.countdown-wrap{margin-top:26px}
.countdown-label{font-size:13px;color:var(--ink-soft);letter-spacing:.04em;margin-bottom:10px;display:block}
.countdown{display:flex;gap:12px;flex-wrap:wrap}
.cd-card{
  min-width:72px;min-height:72px;padding:10px 12px;border-radius:var(--r-md);background:var(--ink);
  color:#F7F3ED;display:flex;flex-direction:column;align-items:center;justify-content:center;
}
.cd-num{font-size:28px;font-weight:700;line-height:1;font-variant-numeric:tabular-nums}
.cd-label{font-size:12px;opacity:.7;margin-top:8px;line-height:1}
.hero-actions{display:flex;flex-wrap:wrap;gap:14px;margin-top:28px}

/* ---------- 数据徽章带 ---------- */
.stat-band{display:grid;grid-template-columns:repeat(4,1fr);gap:16px}
.stat{
  display:flex;align-items:center;gap:12px;padding:14px 20px;border-radius:var(--r-pill);
  background:var(--card);border:1px solid var(--line);box-shadow:var(--sh);transition:transform .2s ease,box-shadow .2s ease;
}
.stat:hover{transform:translateY(-3px);box-shadow:var(--sh-hover)}
.stat-icon{
  width:20px;height:20px;border-radius:50%;background:var(--brand-light);color:var(--brand-dark);
  display:inline-flex;align-items:center;justify-content:center;font-size:10px;flex:0 0 auto;
}
.stat-num{font-size:18px;font-weight:700;font-variant-numeric:tabular-nums;line-height:1.2}
.stat-label{font-size:12px;color:var(--ink-soft);line-height:1.2}

/* ---------- 看点时间线 ---------- */
.timeline{display:flex;flex-direction:column}
.point{position:relative;display:grid;grid-template-columns:56px 1fr;gap:22px;padding-bottom:28px}
.point:last-child{padding-bottom:0}
.point:not(:last-child)::before{
  content:"";position:absolute;left:27px;top:56px;bottom:0;width:2px;border-radius:var(--r-pill);
  background:linear-gradient(180deg,#F3DCC8,#DCE8E4);
}
.point-idx{
  width:54px;height:54px;border-radius:var(--r-md);background:var(--brand-light);color:var(--brand-dark);
  display:flex;align-items:center;justify-content:center;font-size:18px;font-weight:700;
  font-variant-numeric:tabular-nums;flex:0 0 auto;
}
.point-body{
  background:var(--card);border:1px solid var(--line);border-radius:var(--r-md);padding:20px 24px;
  box-shadow:var(--sh);transition:transform .2s ease,box-shadow .2s ease;
}
.point-body:hover{transform:translateY(-3px);box-shadow:var(--sh-hover)}
.point-body h3{font-size:19px;font-weight:600;line-height:1.4;margin-bottom:6px}
.point-body p{font-size:14px;color:var(--ink-soft);line-height:1.8}
.point-body .tag{margin-top:12px}

/* ---------- 订阅区 ---------- */
.subscribe{
  border-radius:var(--r-lg);background:var(--grad-soft);padding:48px;
  display:grid;grid-template-columns:5fr 7fr;gap:44px;align-items:center;
}
.subscribe h2{font-size:26px;font-weight:700;line-height:1.4}
.subscribe p{margin-top:12px;font-size:15px;color:var(--ink-soft)}
.subscribe-note{margin-top:16px;font-size:13px;color:var(--ink-soft);display:flex;align-items:center;gap:8px}
.subscribe-note i{color:var(--accent)}
.form-row{display:flex;gap:12px;flex-wrap:wrap}
.field{
  flex:1 1 240px;min-width:0;height:48px;padding:0 18px;border-radius:var(--r-sm);
  border:1px solid var(--line);background:#fff;font-size:15px;transition:border-color .2s ease,box-shadow .2s ease;
}
.field::placeholder{color:#A79C90}
.field:focus{border-color:var(--brand);box-shadow:0 0 0 4px rgba(243,220,200,.7);outline:none}
.form-hint{margin-top:12px;font-size:12px;color:var(--ink-soft)}
.form-msg{
  margin-top:16px;display:none;padding:12px 18px;border-radius:var(--r-sm);font-size:14px;line-height:1.7;
}
.form-msg.is-ok{display:block;background:var(--accent-light);color:var(--accent)}
.form-msg.is-err{display:block;background:var(--brand-light);color:var(--brand-dark)}

/* ---------- 最新信息（CMS） ---------- */
.chips{display:flex;flex-wrap:wrap;gap:10px;margin-bottom:26px}
.chip{
  display:inline-flex;align-items:center;height:36px;padding:0 18px;border-radius:var(--r-pill);
  background:var(--card);border:1px solid var(--line);font-size:13px;color:var(--ink-soft);
  transition:background .2s ease,color .2s ease,border-color .2s ease;
}
.chip:hover{border-color:var(--brand);color:var(--brand-dark)}
.chip.is-active{background:var(--ink);border-color:var(--ink);color:#F7F3ED}
.post-list{display:grid;grid-template-columns:repeat(2,1fr);gap:20px}
.post-card{
  display:grid;grid-template-columns:132px 1fr;gap:18px;padding:18px;background:var(--card);
  border:1px solid var(--line);border-radius:var(--r-md);box-shadow:var(--sh);
  transition:transform .2s ease,box-shadow .2s ease,border-color .2s ease;
}
.post-card:hover{transform:translateY(-3px);box-shadow:var(--sh-hover);border-color:#D8CBB9}
.post-thumb{
  border-radius:var(--r-sm);aspect-ratio:16/9;background:linear-gradient(135deg,#F3DCC8,#DCE8E4);
  display:flex;align-items:center;justify-content:center;color:var(--brand-dark);font-size:20px;overflow:hidden;
}
.post-body{min-width:0}
.post-meta{display:flex;align-items:center;gap:10px;margin-bottom:8px;flex-wrap:wrap}
.post-cat{
  display:inline-flex;align-items:center;height:24px;padding:0 10px;border-radius:var(--r-pill);
  background:var(--accent-light);color:var(--accent);font-size:12px;font-weight:600;
}
.post-time{font-size:12px;color:var(--ink-soft);font-variant-numeric:tabular-nums}
.post-body h3{font-size:18px;font-weight:600;line-height:1.45;margin-bottom:6px}
.post-card:hover .post-body h3 a{color:var(--brand)}
.post-body h3 a{display:block;overflow:hidden;text-overflow:ellipsis;display:-webkit-box;-webkit-line-clamp:2;-webkit-box-orient:vertical}
.post-body p{
  font-size:14px;color:var(--ink-soft);line-height:1.75;overflow:hidden;
  display:-webkit-box;-webkit-line-clamp:2;-webkit-box-orient:vertical;
}
.post-list-wrap{margin-top:30px;display:flex;justify-content:center}
.empty-state{
  grid-column:1/-1;display:flex;flex-direction:column;align-items:center;gap:14px;
  padding:56px 24px;background:var(--card);border:1px dashed var(--line);border-radius:var(--r-lg);text-align:center;
}
.empty-state i{font-size:26px;color:var(--brand)}
.empty-state p{font-size:15px;color:var(--ink-soft)}

/* ---------- 分类导航块 ---------- */
.cats{display:grid;grid-template-columns:5fr 7fr;gap:32px;align-items:stretch}
.cats-media{border-radius:var(--r-lg);overflow:hidden;box-shadow:var(--sh);min-height:280px;background:var(--card-2)}
.cats-media img{width:100%;height:100%;object-fit:cover}
.cat-list{display:flex;flex-direction:column;gap:18px}
.cat-pill{
  display:flex;align-items:center;gap:18px;padding:24px;background:var(--card);
  border:1px solid var(--line);border-radius:var(--r-md);box-shadow:var(--sh);
  transition:transform .2s ease,box-shadow .2s ease,border-color .2s ease;
}
.cat-pill:hover{transform:translateY(-3px);box-shadow:var(--sh-hover);border-color:var(--brand-light)}
.cat-ico{
  width:46px;height:46px;border-radius:var(--r-sm);background:var(--grad-soft);color:var(--brand-dark);
  display:inline-flex;align-items:center;justify-content:center;font-size:17px;flex:0 0 auto;
}
.cat-txt{flex:1 1 auto;min-width:0}
.cat-txt strong{display:block;font-size:18px;font-weight:600;line-height:1.45}
.cat-pill:hover .cat-txt strong{color:var(--brand-dark)}
.cat-txt em{display:block;font-style:normal;font-size:13px;color:var(--ink-soft);line-height:1.7;margin-top:4px}
.cat-arrow{color:var(--brand);font-size:14px;flex:0 0 auto}

/* ---------- 回放轨道 ---------- */
.track-head{display:flex;align-items:flex-end;justify-content:space-between;gap:20px}
.track-nav{display:flex;gap:10px}
.track-btn{
  width:44px;height:44px;border-radius:50%;border:1px solid var(--line);background:var(--card);color:var(--ink);
  display:inline-flex;align-items:center;justify-content:center;transition:background .2s ease,color .2s ease,transform .2s ease;
}
.track-btn:hover{background:var(--brand-light);color:var(--brand-dark);transform:translateY(-2px)}
.replay-track{
  display:flex;gap:20px;overflow-x:auto;padding:6px 4px 22px;scroll-snap-type:x mandatory;
  scrollbar-width:thin;
}
.replay-track::-webkit-scrollbar{height:8px}
.replay-track::-webkit-scrollbar-thumb{background:var(--line);border-radius:var(--r-pill)}
.replay-card{
  flex:0 0 300px;scroll-snap-align:start;background:var(--card);border:1px solid var(--line);
  border-radius:var(--r-md);overflow:hidden;box-shadow:var(--sh);
  transition:transform .2s ease,box-shadow .2s ease,border-color .2s ease;
}
.replay-card:hover{transform:translateY(-3px);box-shadow:var(--sh-hover);border-color:var(--brand-light)}
.replay-cover{position:relative;aspect-ratio:16/9;overflow:hidden;background:var(--card-2)}
.replay-cover img{width:100%;height:100%;object-fit:cover;transition:transform .35s ease}
.replay-card:hover .replay-cover img{transform:scale(1.03)}
.dur{
  position:absolute;right:12px;bottom:12px;padding:3px 10px;border-radius:var(--r-pill);
  background:rgba(35,32,28,.82);color:#F7F3ED;font-size:12px;font-variant-numeric:tabular-nums;font-weight:600;
}
.replay-body{padding:16px 18px 20px}
.replay-date{font-size:12px;color:var(--ink-soft);font-variant-numeric:tabular-nums}
.replay-body h3{font-size:17px;font-weight:600;line-height:1.5;margin-top:6px}

/* ---------- FAQ ---------- */
.accordion{border:0;background:transparent;margin:0}
.accordion .accordion-item{
  border:1px solid var(--line);border-radius:var(--r-md);background:var(--card);
  margin-bottom:14px;box-shadow:var(--sh);overflow:hidden;
}
.accordion .accordion-item:last-child{margin-bottom:0}
.accordion .accordion-title{
  position:relative;display:block;padding:20px 60px 20px 22px;border:0;background:transparent;
  font-size:17px;font-weight:600;color:var(--ink);line-height:1.6;transition:color .2s ease;
}
.accordion .accordion-title:hover{color:var(--brand-dark);background:transparent}
.accordion .accordion-title::before{
  content:"+";position:absolute;right:22px;top:50%;transform:translateY(-50%);
  font-size:22px;font-weight:400;color:var(--brand);line-height:1;transition:transform .25s ease;
}
.accordion .accordion-title[aria-expanded="true"]::before{transform:translateY(-50%) rotate(45deg)}
.accordion .accordion-content{
  border:0;padding:0 22px 22px;font-size:15px;line-height:1.9;color:var(--ink-soft);background:transparent;
}

/* ---------- 页脚 ---------- */
.footer{background:var(--ink);color:#F7F3ED;border-top:1px solid var(--line);margin-top:96px}
.footer .container{padding-top:64px;padding-bottom:28px}
.footer-grid{display:grid;grid-template-columns:1.4fr 1fr 1.2fr;gap:48px}
.footer-brand{display:flex;align-items:center;gap:12px;margin-bottom:16px}
.footer-brand .brand-mark{box-shadow:none}
.footer-brand strong{display:block;font-size:17px;font-weight:700;line-height:1.3}
.footer-brand em{display:block;font-style:normal;font-size:11px;letter-spacing:.08em;opacity:.7;white-space:nowrap}
.footer-col p{font-size:14px;line-height:1.85;color:rgba(247,243,237,.72);max-width:32em}
.footer-col h4{font-size:15px;font-weight:600;margin-bottom:18px;letter-spacing:.02em}
.footer-col ul li{font-size:14px;line-height:2.1;color:rgba(247,243,237,.72)}
.footer-col ul li a:hover{color:var(--brand-light)}
.footer-col .btn{margin-top:18px}
.footer-bottom{
  margin-top:48px;padding-top:22px;border-top:1px solid rgba(247,243,237,.14);
  display:flex;flex-wrap:wrap;gap:12px;justify-content:space-between;font-size:13px;color:rgba(247,243,237,.6);
}

/* ---------- 响应式 ---------- */
@media (min-width:1200px){
  :root{--nav-w:280px}
}
@media (max-width:1199px){
  :root{--nav-w:220px}
  .container{padding:0 32px}
  .hero{gap:32px}
  .hero-copy h1{font-size:clamp(28px,3.4vw,38px)}
  .post-list{gap:16px}
}
@media (max-width:1023px){
  .side-nav{
    width:284px;height:100vh;transform:translateX(-102%);
    transition:transform .3s ease;box-shadow:0 24px 60px -24px rgba(35,32,28,.5);
  }
  .side-nav.is-open{transform:translateX(0)}
  .page{margin-left:0;padding-top:64px}
  .m-header{
    display:flex;align-items:center;gap:12px;position:fixed;top:0;left:0;right:0;height:64px;
    padding:0 16px;background:#fff;border-bottom:1px solid var(--line);z-index:70;
    box-shadow:0 6px 20px -16px rgba(35,32,28,.5);
  }
  .m-toggle{
    width:40px;height:40px;border-radius:var(--r-sm);border:1px solid var(--line);background:#fff;
    color:var(--ink);display:inline-flex;align-items:center;justify-content:center;font-size:15px;flex:0 0 auto;
  }
  .m-brand{flex:1 1 auto;min-width:0;font-size:16px;font-weight:700;line-height:1.2}
  .m-brand em{display:block;font-style:normal;font-size:11px;letter-spacing:.08em;opacity:.7;font-weight:400;white-space:nowrap;overflow:hidden;text-overflow:ellipsis}
  .m-cta{
    display:inline-flex;align-items:center;height:38px;padding:0 16px;border-radius:var(--r-pill);
    background:var(--grad-brand);color:#fff;font-size:14px;font-weight:600;flex:0 0 auto;
  }
  .nav-overlay{
    display:block;position:fixed;inset:0;background:rgba(35,32,28,.45);
    opacity:0;pointer-events:none;transition:opacity .25s ease;z-index:75;
  }
  .nav-overlay.is-open{opacity:1;pointer-events:auto}
  .hero{grid-template-columns:1fr;gap:28px;padding-top:32px}
  .hero-media{aspect-ratio:16/9}
  .stat-band{grid-template-columns:repeat(2,1fr)}
  .subscribe{grid-template-columns:1fr;gap:28px;padding:36px}
  .cats{grid-template-columns:1fr;gap:24px}
  .cats-media{min-height:220px}
  .post-list{grid-template-columns:1fr}
  .footer-grid{grid-template-columns:1fr 1fr;gap:36px}
  .block{margin-bottom:64px}
  .footer{margin-top:64px}
}
@media (max-width:768px){
  .container{padding:0 22px}
  .block-head h2{font-size:22px}
  .hero-copy h1{font-size:clamp(26px,6.4vw,32px)}
  .point{grid-template-columns:44px 1fr;gap:16px}
  .point-idx{width:44px;height:44px;border-radius:var(--r-sm);font-size:16px}
  .point:not(:last-child)::before{left:22px;top:46px}
  .subscribe{padding:28px 22px;border-radius:var(--r-md)}
  .subscribe h2{font-size:22px}
  .form-row{flex-direction:column}
  .form-row .btn{width:100%}
  .field{width:100%}
  .post-card{grid-template-columns:1fr;gap:14px}
  .post-thumb{aspect-ratio:16/9}
  .footer-grid{grid-template-columns:1fr;gap:32px}
  .replay-card{flex:0 0 260px}
  .track-head{flex-direction:column;align-items:flex-start}
}
@media (max-width:520px){
  .container{padding:0 18px}
  body{font-size:16px;line-height:1.8}
  .cd-card{min-width:56px;min-height:56px;padding:8px 10px;border-radius:var(--r-sm)}
  .cd-num{font-size:20px}
  .cd-label{font-size:11px;margin-top:6px}
  .countdown{gap:8px}
  .hero-actions{flex-direction:column}
  .hero-actions .btn{width:100%}
  .stat-band{grid-template-columns:1fr 1fr;gap:12px}
  .stat{padding:12px 14px;border-radius:var(--r-md)}
  .stat-num{font-size:16px}
  .cat-pill{padding:18px;gap:14px}
  .cat-txt strong{font-size:16px}
  .block{margin-bottom:56px}
  .footer .container{padding-top:48px}
}

/* roulang page: article */
:root{
  --brand:#C9743C;
  --brand-dark:#9E5527;
  --brand-light:#F3DCC8;
  --accent:#376B63;
  --accent-light:#DCE8E4;
  --bg:#F7F3ED;
  --surface:#FFFFFF;
  --surface-2:#EFE8DE;
  --ink:#23201C;
  --muted:#6B625A;
  --line:#E2D9CD;
  --gold:#E8B44A;
  --grad-brand:linear-gradient(135deg,#C9743C 0%,#E8B44A 100%);
  --grad-soft:linear-gradient(135deg,#F3DCC8 0%,#DCE8E4 100%);
  --r-lg:24px;
  --r-md:16px;
  --r-sm:12px;
  --pill:999px;
  --shadow-sm:0 1px 2px rgba(35,32,28,.04),0 12px 32px -12px rgba(35,32,28,.14);
  --shadow-lg:0 2px 6px rgba(35,32,28,.06),0 22px 48px -18px rgba(35,32,28,.24);
  --sidebar-w:264px;
  --gap-section:96px;
}
*,*::before,*::after{box-sizing:border-box;}
html{-webkit-text-size-adjust:100%;}
body{
  margin:0;
  background:var(--bg);
  color:var(--ink);
  font-family:"PingFang SC","Microsoft YaHei","Noto Sans SC","Helvetica Neue",Arial,sans-serif;
  font-size:16px;
  line-height:1.75;
  -webkit-font-smoothing:antialiased;
}
img{max-width:100%;display:block;border-style:none;}
a{color:var(--brand-dark);text-decoration:none;transition:color .2s ease,box-shadow .2s ease;}
a:hover{color:var(--brand-dark);box-shadow:inset 0 -2px 0 0 var(--brand);}
a:focus-visible,button:focus-visible,input:focus-visible{outline:2px solid var(--brand);outline-offset:2px;box-shadow:0 0 0 4px rgba(243,220,200,.7);}
h1,h2,h3,h4{margin:0;font-weight:700;line-height:1.35;letter-spacing:.01em;}
p{margin:0;}
ul{margin:0;padding:0;list-style:none;}
button{font-family:inherit;}
.num{font-variant-numeric:tabular-nums;}
.container{width:100%;max-width:1200px;margin:0 auto;padding:0 48px;}

/* ---------- 左侧竖向导航 ---------- */
.app{display:flex;min-height:100vh;}
.sidebar{
  position:fixed;
  top:0;left:0;
  width:var(--sidebar-w);
  height:100vh;
  background:var(--surface);
  border-right:1px solid var(--line);
  display:flex;
  flex-direction:column;
  z-index:60;
}
.brand-block{
  height:96px;
  padding:0 20px;
  display:flex;
  align-items:center;
  gap:12px;
  border-bottom:1px solid var(--line);
  flex:0 0 auto;
}
.brand-mark{
  width:42px;height:42px;flex:0 0 42px;
  border-radius:14px;
  background:var(--grad-brand);
  color:#fff;
  display:flex;align-items:center;justify-content:center;
  font-size:17px;
  box-shadow:0 8px 18px -8px rgba(201,116,60,.75);
}
.brand-text{display:flex;flex-direction:column;min-width:0;}
.brand-text strong{font-size:17px;font-weight:700;letter-spacing:.02em;color:var(--ink);line-height:1.3;}
.brand-text em{
  font-style:normal;
  font-size:11px;
  letter-spacing:.08em;
  opacity:.7;
  color:var(--muted);
  white-space:nowrap;
  overflow:hidden;
  text-overflow:ellipsis;
}
.nav-list{padding:18px 14px;display:flex;flex-direction:column;gap:6px;flex:1 1 auto;overflow-y:auto;}
.nav-item{
  position:relative;
  display:flex;align-items:center;gap:12px;
  min-height:48px;
  padding:0 14px 0 20px;
  border-radius:14px;
  color:var(--ink);
  font-size:15px;
  font-weight:500;
  transition:background .2s ease,color .2s ease,transform .2s ease;
}
.nav-item i{font-size:14px;color:var(--muted);width:16px;text-align:center;transition:color .2s ease;}
.nav-item:hover{background:var(--bg);color:var(--brand-dark);box-shadow:none;}
.nav-item:hover i{color:var(--brand);}
.nav-item.is-active{background:var(--brand-light);color:var(--brand-dark);font-weight:600;}
.nav-item.is-active i{color:var(--brand-dark);}
.nav-item.is-active::before{
  content:"";position:absolute;left:4px;top:12px;bottom:12px;width:4px;border-radius:var(--pill);
  background:var(--grad-brand);
}
.side-foot{
  flex:0 0 auto;
  padding:20px;
  border-top:1px solid var(--line);
  display:flex;flex-direction:column;gap:12px;
}
.side-foot p{font-size:13px;color:var(--muted);line-height:1.6;}
.side-foot .keyword-line{font-size:11px;letter-spacing:.08em;opacity:.7;color:var(--muted);white-space:nowrap;overflow:hidden;text-overflow:ellipsis;}
.burger{
  display:none;
  width:44px;height:44px;
  border:1px solid var(--line);
  border-radius:var(--r-sm);
  background:var(--surface);
  color:var(--ink);
  font-size:16px;
  cursor:pointer;
}

/* ---------- 内容区 ---------- */
.content{margin-left:var(--sidebar-w);flex:1 1 auto;min-width:0;display:flex;flex-direction:column;}
.main{flex:1 1 auto;padding-bottom:var(--gap-section);}

/* 面包屑 */
.crumbs{
  padding:28px 0 0;
  font-size:13px;
  color:var(--muted);
  display:flex;
  flex-wrap:wrap;
  align-items:center;
  gap:8px;
}
.crumbs a{color:var(--muted);}
.crumbs a:hover{color:var(--brand-dark);box-shadow:inset 0 -2px 0 0 var(--brand);}
.crumbs span.sep{opacity:.6;}
.crumbs .current{color:var(--ink);font-weight:500;}

/* 文章头部 */
.article-head{padding:22px 0 34px;border-bottom:1px solid var(--line);}
.chip-row{display:flex;flex-wrap:wrap;gap:10px;align-items:center;margin-bottom:18px;}
.chip{
  display:inline-flex;align-items:center;gap:6px;
  padding:5px 14px;
  border-radius:var(--pill);
  font-size:12px;
  font-weight:600;
  letter-spacing:.02em;
  background:var(--brand-light);
  color:var(--brand-dark);
  border:1px solid transparent;
}
.chip.is-accent{background:var(--accent-light);color:var(--accent);}
.chip.is-ghost{background:var(--surface);border-color:var(--line);color:var(--muted);font-weight:500;}
.article-head h1{font-size:clamp(30px,4vw,40px);line-height:1.35;max-width:900px;}
.article-meta{
  display:flex;flex-wrap:wrap;align-items:center;gap:14px;
  margin-top:20px;
  font-size:13px;
  color:var(--muted);
}
.article-meta .dot{width:4px;height:4px;border-radius:50%;background:var(--line);}
.cover-figure{margin:34px 0 0;border-radius:20px;overflow:hidden;box-shadow:var(--shadow-sm);}
.cover-figure img{width:100%;aspect-ratio:16/9;object-fit:cover;}
.cover-figure figcaption{font-size:13px;color:var(--muted);padding:12px 4px 0;}

/* 正文布局 */
.article-layout{
  display:grid;
  grid-template-columns:minmax(0,760px) 300px;
  gap:48px;
  align-items:start;
  padding-top:44px;
}
.article-body{font-size:17px;line-height:1.9;color:var(--ink);max-width:760px;word-wrap:break-word;}
.article-body h2{
  position:relative;
  font-size:22px;
  margin:44px 0 16px;
  padding-left:16px;
  scroll-margin-top:24px;
}
.article-body h2::before{
  content:"";position:absolute;left:0;top:.34em;width:4px;height:1em;border-radius:var(--pill);
  background:var(--grad-brand);
}
.article-body h3{font-size:19px;margin:30px 0 12px;color:var(--ink);}
.article-body h4{font-size:17px;margin:24px 0 10px;}
.article-body p{margin:0 0 1.2em;}
.article-body strong{font-weight:700;}
.article-body blockquote{
  margin:26px 0;
  padding:18px 22px;
  border-left:4px solid var(--brand);
  background:var(--bg);
  border-radius:0 var(--r-sm) var(--r-sm) 0;
  color:#3d372f;
}
.article-body blockquote p:last-child{margin-bottom:0;}
.article-body ul,.article-body ol{margin:0 0 1.4em;padding-left:0;}
.article-body ul li{position:relative;padding-left:24px;margin-bottom:10px;}
.article-body ul li::before{
  content:"";position:absolute;left:4px;top:.72em;width:7px;height:7px;border-radius:50%;
  background:var(--grad-brand);
}
.article-body ol{counter-reset:cmslist;padding-left:0;}
.article-body ol li{position:relative;padding-left:34px;margin-bottom:10px;counter-increment:cmslist;}
.article-body ol li::before{
  content:counter(cmslist);
  position:absolute;left:0;top:.18em;
  width:22px;height:22px;border-radius:50%;
  background:var(--brand-light);color:var(--brand-dark);
  font-size:12px;font-weight:700;line-height:22px;text-align:center;
}
.article-body img{border-radius:var(--r-md);margin:26px auto;box-shadow:var(--shadow-sm);}
.article-body figure{margin:26px 0;}
.article-body figcaption{font-size:13px;color:var(--muted);text-align:center;margin-top:10px;}
.article-body .table-scroll{overflow-x:auto;}
.article-body table{
  width:100%;border-collapse:separate;border-spacing:0;
  border:1px solid var(--line);border-radius:var(--r-sm);overflow:hidden;
  font-size:15px;margin:24px 0;
}
.article-body thead th{background:var(--surface-2);color:var(--ink);font-weight:600;text-align:left;}
.article-body th,.article-body td{padding:12px 16px;border-bottom:1px solid var(--line);}
.article-body tbody tr:nth-child(even){background:#FCFAF7;}
.article-body tbody tr:last-child td{border-bottom:none;}
.article-body hr{border:none;border-top:1px solid var(--line);margin:36px 0;}

/* 空态 */
.empty-state{
  background:var(--surface);
  border:1px solid var(--line);
  border-radius:var(--r-lg);
  padding:56px 32px;
  text-align:center;
  box-shadow:var(--shadow-sm);
}
.empty-state i{font-size:30px;color:var(--brand);}
.empty-state h2{font-size:22px;margin:18px 0 10px;}
.empty-state p{color:var(--muted);font-size:15px;margin-bottom:22px;}

/* 侧栏 */
.side-col{position:sticky;top:32px;display:flex;flex-direction:column;gap:20px;}
.side-card{
  background:var(--surface);
  border:1px solid var(--line);
  border-radius:var(--r-md);
  padding:22px;
  box-shadow:var(--shadow-sm);
}
.side-card h3{
  font-size:15px;
  display:flex;align-items:center;gap:8px;
  margin-bottom:14px;
  padding-bottom:12px;
  border-bottom:1px solid var(--line);
}
.side-card h3 i{color:var(--brand);}
.toc-list{display:flex;flex-direction:column;gap:2px;}
.toc-list a{
  display:block;
  font-size:14px;
  line-height:1.6;
  color:var(--muted);
  padding:7px 10px;
  border-radius:10px;
  border-left:3px solid transparent;
}
.toc-list a:hover{background:var(--bg);color:var(--brand-dark);box-shadow:none;}
.toc-list a.is-level-3{padding-left:22px;font-size:13px;}
.toc-list a.is-current{background:var(--brand-light);color:var(--brand-dark);border-left-color:var(--brand);font-weight:600;}
.side-rel{display:flex;flex-direction:column;gap:12px;}
.side-rel a{
  display:flex;gap:12px;align-items:flex-start;
  padding:10px;border-radius:var(--r-sm);
  transition:background .2s ease,transform .2s ease;
}
.side-rel a:hover{background:var(--bg);box-shadow:none;transform:translateY(-2px);}
.side-rel img{width:74px;height:52px;object-fit:cover;border-radius:10px;flex:0 0 74px;}
.side-rel span{font-size:14px;line-height:1.55;color:var(--ink);font-weight:500;}
.side-rel a:hover span{color:var(--brand-dark);}
.side-band{
  border-radius:var(--r-md);
  background:var(--grad-soft);
  padding:22px;
  border:1px solid transparent;
}
.side-band h3{font-size:15px;margin-bottom:8px;border-bottom:none;padding-bottom:0;}
.side-band p{font-size:13px;color:#4b443c;line-height:1.65;margin-bottom:14px;}

/* 按钮 */
.btn{
  display:inline-flex;align-items:center;justify-content:center;gap:8px;
  border:none;cursor:pointer;
  border-radius:var(--pill);
  font-size:15px;font-weight:600;
  padding:13px 26px;
  line-height:1.2;
  transition:transform .2s ease,box-shadow .2s ease,background .2s ease,color .2s ease;
}
.btn-primary{background:var(--grad-brand);color:#fff;box-shadow:0 10px 24px -12px rgba(201,116,60,.85);}
.btn-primary:hover{transform:translateY(-3px);box-shadow:0 18px 34px -14px rgba(201,116,60,.85);color:#fff;}
.btn-outline{background:transparent;color:var(--brand-dark);border:1.5px solid var(--brand);}
.btn-outline:hover{background:var(--brand-light);transform:translateY(-3px);color:var(--brand-dark);}
.btn-ghost{background:var(--surface);color:var(--ink);border:1px solid var(--line);}
.btn-ghost:hover{border-color:var(--brand);color:var(--brand-dark);transform:translateY(-3px);}
.btn-sm{padding:9px 18px;font-size:13px;}
.btn-block{width:100%;}

/* 相关推荐 */
.related{margin-top:72px;}
.section-head{display:flex;align-items:flex-end;justify-content:space-between;gap:20px;margin-bottom:26px;}
.section-head h2{font-size:26px;}
.section-head p{font-size:14px;color:var(--muted);margin-top:8px;}
.section-head .bar{display:block;width:56px;height:4px;border-radius:var(--pill);background:var(--grad-brand);margin-bottom:16px;}
.rel-grid{display:grid;grid-template-columns:repeat(3,minmax(0,1fr));gap:24px;}
.card{
  background:var(--surface);
  border:1px solid var(--line);
  border-radius:var(--r-md);
  overflow:hidden;
  display:flex;flex-direction:column;
  box-shadow:var(--shadow-sm);
  transition:transform .25s ease,box-shadow .25s ease;
}
.card:hover{transform:translateY(-3px);box-shadow:var(--shadow-lg);}
.card .thumb{overflow:hidden;}
.card .thumb img{width:100%;aspect-ratio:16/9;object-fit:cover;transition:transform .35s ease;}
.card:hover .thumb img{transform:scale(1.03);}
.card-body{padding:18px 20px 22px;display:flex;flex-direction:column;gap:10px;flex:1 1 auto;}
.card-body h3{font-size:18px;line-height:1.45;}
.card-body h3 a{color:var(--ink);}
.card-body h3 a:hover{color:var(--brand-dark);box-shadow:none;}
.card-body p{font-size:14px;color:var(--muted);line-height:1.7;}
.card-foot{display:flex;align-items:center;justify-content:space-between;margin-top:auto;padding-top:8px;}
.card-foot .date{font-size:12px;color:var(--muted);}
.card-foot .arrow{font-size:13px;color:var(--brand);font-weight:600;}

.back-row{margin-top:36px;display:flex;gap:14px;flex-wrap:wrap;}

/* CTA 条 */
.cta-band{
  margin-top:80px;
  border-radius:var(--r-lg);
  background:var(--grad-soft);
  padding:38px 40px;
  display:flex;align-items:center;justify-content:space-between;gap:28px;
  border:1px solid rgba(201,116,60,.14);
}
.cta-band h2{font-size:24px;margin-bottom:10px;}
.cta-band p{font-size:15px;color:#4b443c;max-width:640px;line-height:1.75;}
.cta-band .btn{flex:0 0 auto;}

/* 页脚 */
.footer{
  margin-top:0;
  background:var(--ink);
  color:var(--bg);
  border-top:1px solid var(--line);
  padding:64px 0 26px;
}
.footer-grid{display:grid;grid-template-columns:1.5fr 1fr 1.2fr;gap:40px;}
.footer-col h4{font-size:15px;margin-bottom:18px;color:#fff;letter-spacing:.04em;}
.footer-col p{font-size:14px;color:#C8C1B8;line-height:1.8;}
.footer-brand{display:flex;align-items:center;gap:12px;margin-bottom:16px;}
.footer-brand .brand-mark{width:40px;height:40px;flex:0 0 40px;border-radius:13px;}
.footer-brand strong{display:block;font-size:17px;color:#fff;}
.footer-brand em{display:block;font-style:normal;font-size:11px;letter-spacing:.08em;opacity:.7;color:#C8C1B8;white-space:nowrap;}
.footer-col ul{display:flex;flex-direction:column;gap:11px;}
.footer-col ul li{font-size:14px;color:#C8C1B8;}
.footer-col ul a{color:#C8C1B8;}
.footer-col ul a:hover{color:var(--brand-light);box-shadow:inset 0 -2px 0 0 var(--brand-light);}
.footer-col .btn{margin-top:18px;}
.footer-bottom{
  margin-top:44px;
  padding-top:20px;
  border-top:1px solid rgba(247,243,237,.16);
  display:flex;flex-wrap:wrap;gap:12px;justify-content:space-between;
  font-size:13px;color:#9C958C;
}

/* 遮罩 */
.drawer-mask{
  display:none;
  position:fixed;inset:0;background:rgba(35,32,28,.42);z-index:55;
}
.drawer-mask.is-open{display:block;}

/* ---------- 响应式 ---------- */
@media (min-width:1200px){
  :root{--sidebar-w:280px;}
  .article-layout{grid-template-columns:minmax(0,760px) 300px;gap:56px;}
}
@media (max-width:1199px){
  .article-layout{grid-template-columns:minmax(0,1fr) 280px;gap:32px;}
  .rel-grid{gap:20px;}
}
@media (max-width:1023px){
  :root{--gap-section:56px;}
  .sidebar{
    position:sticky;
    top:0;left:0;
    width:100%;
    height:64px;
    flex-direction:row;
    align-items:center;
    justify-content:space-between;
    padding:0 18px;
    box-shadow:0 6px 18px -12px rgba(35,32,28,.35);
    border-right:none;
    border-bottom:1px solid var(--line);
  }
  .brand-block{height:64px;padding:0;border-bottom:none;gap:10px;}
  .brand-mark{width:36px;height:36px;flex:0 0 36px;border-radius:12px;font-size:15px;}
  .brand-text strong{font-size:16px;}
  .burger{display:inline-flex;align-items:center;justify-content:center;}
  .nav-list{
    position:fixed;
    top:64px;left:0;
    width:284px;
    height:calc(100vh - 64px);
    background:var(--surface);
    border-right:1px solid var(--line);
    padding:18px 14px;
    transform:translateX(-102%);
    transition:transform .28s ease;
    z-index:58;
    box-shadow:var(--shadow-lg);
  }
  .nav-list.is-open{transform:translateX(0);}
  .side-foot{
    position:fixed;
    left:0;bottom:0;
    width:284px;
    background:var(--surface);
    transform:translateX(-102%);
    transition:transform .28s ease;
    z-index:58;
    border-right:1px solid var(--line);
  }
  .side-foot.is-open{transform:translateX(0);}
  .content{margin-left:0;}
  .container{padding:0 24px;}
  .article-layout{grid-template-columns:minmax(0,1fr);gap:36px;}
  .side-col{position:static;}
  .rel-grid{grid-template-columns:repeat(2,minmax(0,1fr));}
  .cta-band{flex-direction:column;align-items:flex-start;padding:30px 26px;}
  .footer-grid{grid-template-columns:1fr 1fr;gap:32px;}
}
@media (max-width:767px){
  .crumbs{padding-top:20px;}
  .article-head{padding:18px 0 26px;}
  .article-body{font-size:16px;line-height:1.8;}
  .article-body h2{font-size:20px;margin:34px 0 14px;}
  .article-body h3{font-size:18px;}
  .rel-grid{grid-template-columns:minmax(0,1fr);}
  .footer-grid{grid-template-columns:minmax(0,1fr);}
  .footer{padding:48px 0 22px;}
  .section-head{flex-direction:column;align-items:flex-start;}
}
@media (max-width:520px){
  .container{padding:0 18px;}
  .article-head h1{font-size:26px;}
  .btn{padding:12px 20px;font-size:14px;}
  .btn-block-mobile{width:100%;}
  .cta-band{padding:26px 20px;}
  .side-card{padding:18px;}
  .footer-bottom{flex-direction:column;gap:8px;}
}

/* roulang page: category1 */
:root{
  --brand:#C9743C;
  --brand-dark:#9E5527;
  --brand-light:#F3DCC8;
  --accent:#376B63;
  --accent-light:#DCE8E4;
  --bg:#F7F3ED;
  --card:#FFFFFF;
  --card-2:#EFE8DE;
  --ink:#23201C;
  --muted:#6B625A;
  --line:#E2D9CD;
  --gold:#E8B44A;
  --grad-brand:linear-gradient(135deg,#C9743C 0%,#E8B44A 100%);
  --grad-soft:linear-gradient(135deg,#F3DCC8 0%,#DCE8E4 100%);
  --r-lg:24px;
  --r-md:16px;
  --r-sm:12px;
  --r-pill:999px;
  --sh:0 1px 2px rgba(35,32,28,.04),0 12px 32px -12px rgba(35,32,28,.14);
  --sh-hover:0 2px 6px rgba(35,32,28,.06),0 22px 44px -16px rgba(35,32,28,.22);
  --nav-w:264px;
}
*,*::before,*::after{box-sizing:border-box}
html{-webkit-text-size-adjust:100%;scroll-behavior:smooth}
body{
  margin:0;
  background:var(--bg);
  color:var(--ink);
  font-family:"PingFang SC","Hiragino Sans GB","Microsoft YaHei","Noto Sans SC","Helvetica Neue",Arial,sans-serif;
  font-size:16px;
  line-height:1.75;
  font-weight:400;
  -webkit-font-smoothing:antialiased;
}
img{display:block;max-width:100%;height:auto;border:0}
a{color:var(--brand-dark);text-decoration:none;background-color:transparent;transition:color .2s ease}
a:hover{color:#7D3F1A}
p{margin:0 0 1em}
h1,h2,h3,h4{margin:0;font-weight:700;line-height:1.35;color:var(--ink)}
ul,ol{margin:0;padding:0;list-style:none}
figure{margin:0}
button{font:inherit;color:inherit;background:none;border:0;cursor:pointer}
input{font:inherit}
strong,b{font-weight:700}
::selection{background:var(--brand-light);color:var(--brand-dark)}
:focus-visible{outline:2px solid var(--brand);outline-offset:2px;box-shadow:0 0 0 4px rgba(243,220,200,.55);border-radius:4px}
.skip-link{position:absolute;left:-9999px;top:0;z-index:200;background:#fff;color:var(--brand-dark);padding:12px 18px;border-radius:0 0 12px 0;font-size:14px}
.skip-link:focus{left:0}

/* ============ 左侧竖向导航 ============ */
.sidebar{
  position:fixed;top:0;left:0;bottom:0;width:var(--nav-w);
  background:#fff;border-right:1px solid var(--line);
  display:flex;flex-direction:column;z-index:60;overflow-y:auto;
}
.brand-block{height:96px;flex:0 0 auto;display:flex;align-items:center;padding:0 20px;border-bottom:1px solid var(--line)}
.brand{display:flex;align-items:center;gap:10px;min-width:0}
.brand-mark{
  width:38px;height:38px;border-radius:12px;background:var(--grad-brand);color:#fff;
  display:grid;place-items:center;font-size:16px;flex:0 0 auto;
  box-shadow:0 8px 18px -10px rgba(201,116,60,.95);
}
.brand-text{display:flex;flex-direction:column;min-width:0}
.brand-text strong{font-size:16px;line-height:1.3;letter-spacing:.02em;color:var(--ink)}
.brand-text em{font-style:normal;font-size:11px;line-height:1.35;letter-spacing:.08em;color:var(--muted);opacity:.7;white-space:nowrap}
.nav-list{display:flex;flex-direction:column;gap:4px;padding:14px 12px;flex:1 1 auto}
.nav-item{
  position:relative;display:flex;align-items:center;gap:12px;height:48px;padding:0 18px 0 20px;
  border-radius:12px;color:var(--muted);font-size:15px;font-weight:500;
  transition:background .2s ease,color .2s ease,transform .2s ease;
}
.nav-item i{width:18px;text-align:center;font-size:14px;color:var(--brand);flex:0 0 auto}
.nav-item:hover{background:var(--card-2);color:var(--ink)}
.nav-item.is-active{background:var(--brand-light);color:var(--brand-dark);font-weight:600}
.nav-item.is-active::before{
  content:"";position:absolute;left:0;top:10px;bottom:10px;width:4px;border-radius:0 4px 4px 0;background:var(--grad-brand);
}
.sidebar-foot{
  border-top:1px solid var(--line);padding:18px 20px 24px;display:flex;flex-direction:column;gap:8px;flex:0 0 auto;
}
.side-note{margin:0;font-size:12px;color:var(--muted);letter-spacing:.02em}
.side-meta{font-size:16px;font-weight:700;color:var(--ink);font-variant-numeric:tabular-nums;letter-spacing:.02em}

/* ============ 移动端顶栏与抽屉 ============ */
.topbar{
  display:none;align-items:center;gap:12px;position:sticky;top:0;z-index:55;
  height:64px;padding:0 16px;background:#fff;border-bottom:1px solid var(--line);
  box-shadow:0 8px 22px -18px rgba(35,32,28,.65);
}
.hamburger{
  width:42px;height:42px;border-radius:12px;background:var(--card-2);color:var(--brand-dark);
  display:grid;place-items:center;font-size:17px;flex:0 0 auto;transition:background .2s ease;
}
.hamburger:hover{background:var(--brand-light)}
.topbar .brand{flex:1 1 auto;min-width:0}
.topbar .brand-mark{width:34px;height:34px;font-size:14px}
.drawer-mask{
  position:fixed;inset:0;background:rgba(35,32,28,.45);z-index:58;
  opacity:0;visibility:hidden;transition:opacity .3s ease,visibility .3s ease;
}

/* ============ 页面骨架 ============ */
.page{margin-left:var(--nav-w);min-height:100vh;display:flex;flex-direction:column}
main{flex:1 1 auto}
.container{width:100%;max-width:1200px;margin:0 auto;padding:0 48px}
.section{padding:88px 0}
.section-tight{padding:56px 0}

/* ============ 按钮 ============ */
.btn{
  display:inline-flex;align-items:center;justify-content:center;gap:8px;
  height:48px;padding:0 26px;border-radius:var(--r-pill);
  font-size:15px;font-weight:600;letter-spacing:.02em;text-align:center;
  border:1.5px solid transparent;cursor:pointer;
  transition:transform .22s ease,box-shadow .22s ease,background .22s ease,color .22s ease,border-color .22s ease;
}
.btn i{font-size:14px}
.btn-primary{background:var(--grad-brand);color:#fff;box-shadow:0 12px 24px -14px rgba(201,116,60,1)}
.btn-primary:hover,.btn-primary:focus-visible{color:#fff;transform:translateY(-3px);box-shadow:0 18px 32px -14px rgba(201,116,60,1)}
.btn-ghost{background:#fff;border-color:var(--brand);color:var(--brand-dark)}
.btn-ghost:hover,.btn-ghost:focus-visible{background:var(--brand-light);color:var(--brand-dark);transform:translateY(-3px)}
.btn-dark{background:var(--ink);color:#F7F3ED}
.btn-dark:hover,.btn-dark:focus-visible{background:#332E28;color:#fff;transform:translateY(-3px)}
.btn-sm{height:40px;padding:0 18px;font-size:14px}
.btn-block{width:100%}

/* ============ 面包屑与 Hero ============ */
.hero-cat{padding:36px 0 0}
.crumbs{display:flex;align-items:center;flex-wrap:wrap;gap:10px;font-size:13px;color:var(--muted);margin-bottom:28px}
.crumbs a{color:var(--muted)}
.crumbs a:hover{color:var(--brand-dark);text-decoration:underline;text-decoration-thickness:2px;text-underline-offset:4px}
.crumbs span{color:var(--line)}
.crumbs em{font-style:normal;font-weight:600;color:var(--ink)}
.hero-grid{align-items:center}
.hero-media{position:relative;border-radius:var(--r-lg);overflow:hidden;box-shadow:var(--sh);background:var(--card-2)}
.hero-media img{width:100%;aspect-ratio:16/9;object-fit:cover}
.media-tag{
  position:absolute;left:18px;bottom:18px;display:inline-flex;align-items:center;gap:8px;
  padding:8px 14px;border-radius:var(--r-pill);background:rgba(35,32,28,.72);color:#F7F3ED;
  font-size:12px;letter-spacing:.06em;backdrop-filter:blur(2px);
}
.media-tag i{color:var(--gold);font-size:11px}
.eyebrow{
  display:inline-flex;align-items:center;gap:8px;margin-bottom:16px;
  padding:6px 14px;border-radius:var(--r-pill);
  background:var(--accent-light);color:var(--accent);
  font-size:12px;font-weight:600;letter-spacing:.06em;
}
h1.hero-title{font-size:clamp(30px,4vw,46px);line-height:1.28;font-weight:700;letter-spacing:.01em}
.hero-lead{margin:20px 0 0;font-size:16px;line-height:1.9;color:var(--muted)}
.hero-actions{display:flex;flex-wrap:wrap;gap:14px;margin-top:28px}
.hero-chips{display:flex;flex-wrap:wrap;gap:10px;margin-top:24px}
.chip{
  display:inline-flex;align-items:center;gap:7px;padding:7px 14px;border-radius:var(--r-pill);
  background:#fff;border:1px solid var(--line);font-size:12px;color:var(--muted);
}
.chip i{color:var(--brand);font-size:11px}

/* ============ 板块标题 ============ */
.sec-head{max-width:760px;margin-bottom:44px}
.sec-title{display:flex;align-items:center;gap:14px;font-size:clamp(21px,2.3vw,26px)}
.sec-title::before{
  content:"";flex:0 0 auto;width:4px;height:24px;border-radius:3px;background:var(--grad-brand);
}
.sec-desc{margin:16px 0 0;font-size:16px;color:var(--muted)}

/* ============ 参数胶囊 ============ */
.param-band{display:grid;grid-template-columns:repeat(3,1fr);gap:16px}
.param{
  display:flex;align-items:center;gap:14px;padding:18px 20px;
  background:#fff;border:1px solid var(--line);border-radius:var(--r-md);box-shadow:var(--sh);
  transition:transform .22s ease,box-shadow .22s ease;
}
.param:hover{transform:translateY(-3px);box-shadow:var(--sh-hover)}
.param .dot{
  width:42px;height:42px;border-radius:var(--r-sm);background:var(--brand-light);color:var(--brand-dark);
  display:grid;place-items:center;font-size:15px;flex:0 0 auto;
}
.param .dot.is-accent{background:var(--accent-light);color:var(--accent)}
.param b{display:block;font-size:18px;line-height:1.3;font-variant-numeric:tabular-nums}
.param span{display:block;font-size:12px;color:var(--muted);letter-spacing:.02em}

/* ============ 图文交替 ============ */
.split{align-items:center}
.split-media{border-radius:var(--r-lg);overflow:hidden;box-shadow:var(--sh);background:var(--card-2)}
.split-media img{width:100%;aspect-ratio:4/3;object-fit:cover}
.split-text h3{font-size:22px;margin-bottom:16px}
.split-text p{font-size:16px;color:var(--muted);margin:0}
.feature-list{display:grid;gap:10px;margin-top:22px}
.feature-list li{display:flex;align-items:flex-start;gap:10px;font-size:15px;color:var(--muted)}
.feature-list li i{color:var(--accent);font-size:12px;margin-top:6px;flex:0 0 auto}

/* ============ 场景卡片 ============ */
.scene-card{
  height:100%;background:#fff;border:1px solid var(--line);border-radius:var(--r-md);
  padding:20px;box-shadow:var(--sh);transition:transform .24s ease,box-shadow .24s ease;
}
.scene-card:hover{transform:translateY(-3px);box-shadow:var(--sh-hover)}
.scene-thumb{border-radius:var(--r-sm);overflow:hidden;margin-bottom:18px}
.scene-thumb img{width:100%;aspect-ratio:16/9;object-fit:cover;transition:transform .4s ease}
.scene-card:hover .scene-thumb img{transform:scale(1.03)}
.scene-card h3{font-size:18px;margin-bottom:10px}
.scene-card p{margin:0;font-size:14px;color:var(--muted)}
.scene-tags{display:flex;flex-wrap:wrap;gap:8px;margin-top:16px}
.tag{
  display:inline-flex;align-items:center;padding:5px 12px;border-radius:var(--r-pill);
  background:var(--card-2);color:var(--muted);font-size:12px;letter-spacing:.02em;
}
.tag.is-accent{background:var(--accent-light);color:var(--accent)}

/* ============ 深色保障带 ============ */
.guard-band{
  position:relative;overflow:hidden;background:var(--ink);color:#F7F3ED;
  border-radius:var(--r-lg);padding:52px 48px;
}
.guard-band::after{
  content:"";position:absolute;right:-70px;bottom:-90px;width:280px;height:280px;border-radius:50%;
  background:radial-gradient(circle,rgba(201,116,60,.38),rgba(201,116,60,0) 70%);
}
.guard-band .sec-title{color:#fff}
.guard-band .sec-desc{color:rgba(247,243,237,.72)}
.guard-grid{position:relative;z-index:1;display:grid;grid-template-columns:repeat(4,1fr);gap:24px;margin-top:8px}
.guard-item .gi-num{display:block;font-size:13px;letter-spacing:.16em;color:var(--gold);font-variant-numeric:tabular-nums}
.guard-item h3{color:#fff;font-size:17px;margin:12px 0 8px}
.guard-item p{margin:0;font-size:14px;line-height:1.8;color:rgba(247,243,237,.7)}

/* ============ 流程 ============ */
.steps{display:grid;grid-template-columns:repeat(4,1fr);gap:20px}
.step{
  height:100%;background:#fff;border:1px solid var(--line);border-radius:var(--r-md);
  padding:28px 22px;box-shadow:var(--sh);transition:transform .24s ease,box-shadow .24s ease;
}
.step:hover{transform:translateY(-3px);box-shadow:var(--sh-hover)}
.step .num{
  width:38px;height:38px;border-radius:var(--r-sm);background:var(--grad-brand);color:#fff;
  display:grid;place-items:center;font-size:15px;font-weight:700;font-variant-numeric:tabular-nums;margin-bottom:18px;
}
.step h3{font-size:17px;margin-bottom:10px}
.step p{margin:0;font-size:14px;color:var(--muted)}

/* ============ 问答 ============ */
.qa-list{display:grid;grid-template-columns:repeat(2,1fr);gap:20px}
.qa{
  background:#fff;border:1px solid var(--line);border-radius:var(--r-md);padding:24px;
  box-shadow:var(--sh);transition:transform .24s ease,box-shadow .24s ease;
}
.qa:hover{transform:translateY(-3px);box-shadow:var(--sh-hover)}
.qa h3{display:flex;gap:10px;font-size:17px;margin-bottom:12px}
.qa h3 i{color:var(--brand);font-size:14px;margin-top:5px;flex:0 0 auto}
.qa p{margin:0;font-size:15px;color:var(--muted)}

/* ============ CTA ============ */
.cta-band{
  display:flex;align-items:center;justify-content:space-between;gap:32px;flex-wrap:wrap;
  background:var(--grad-soft);border-radius:var(--r-lg);padding:48px;
}
.cta-band h2{font-size:clamp(21px,2.3vw,26px);max-width:520px}
.cta-band p{margin:14px 0 0;max-width:560px;font-size:15px;color:#4A443D}
.cta-actions{display:flex;flex-wrap:wrap;gap:14px}

/* ============ 页脚 ============ */
.footer{background:var(--ink);color:#F7F3ED;border-top:1px solid var(--line);padding:64px 0 28px}
.footer-grid{display:grid;grid-template-columns:1.4fr 1fr 1.1fr;gap:40px}
.footer-brand{display:flex;align-items:center;gap:12px;margin-bottom:18px}
.footer-brand strong{display:block;font-size:16px;color:#fff;line-height:1.35}
.footer-brand em{display:block;font-style:normal;font-size:11px;letter-spacing:.08em;color:rgba(247,243,237,.7);white-space:nowrap}
.footer-col p{margin:0;max-width:380px;font-size:14px;line-height:1.9;color:rgba(247,243,237,.72)}
.footer-col h4{font-size:15px;color:#fff;margin-bottom:18px}
.footer-col ul{display:grid;gap:11px}
.footer-col li{font-size:14px;color:rgba(247,243,237,.72)}
.footer-col a{color:rgba(247,243,237,.84)}
.footer-col a:hover{color:var(--brand-light)}
.footer-col .btn{margin-top:18px}
.footer-bottom{
  display:flex;justify-content:space-between;gap:16px;flex-wrap:wrap;
  margin-top:46px;padding-top:20px;border-top:1px solid rgba(247,243,237,.16);
  font-size:13px;color:rgba(247,243,237,.6);
}

/* ============ 响应式 ============ */
@media (max-width:1199px){
  :root{--nav-w:220px}
  .container{padding:0 32px}
  .section{padding:72px 0}
  .sidebar-foot{padding:16px 16px 22px}
  .brand-block{padding:0 16px}
}
@media (max-width:1023px){
  .topbar{display:flex}
  .sidebar{
    width:280px;transform:translateX(-100%);
    transition:transform .32s cubic-bezier(.2,.7,.3,1);
    box-shadow:0 30px 70px -24px rgba(35,32,28,.5);
  }
  .sidebar.is-open{transform:translateX(0)}
  .drawer-mask.is-open{opacity:1;visibility:visible}
  .page{margin-left:0}
  .hero-cat{padding:28px 0 0}
  .param-band{grid-template-columns:repeat(2,1fr)}
  .guard-grid{grid-template-columns:repeat(2,1fr)}
  .steps{grid-template-columns:repeat(2,1fr)}
  .footer-grid{grid-template-columns:1fr 1fr}
  .guard-band{padding:40px 32px}
}
@media (max-width:640px){
  .container{padding:0 18px}
  .section{padding:56px 0}
  .hero-lead{font-size:15px}
  .hero-actions{gap:12px}
  .hero-actions .btn{width:100%}
  .param-band{grid-template-columns:1fr}
  .guard-grid{grid-template-columns:1fr;gap:20px}
  .steps{grid-template-columns:1fr}
  .qa-list{grid-template-columns:1fr}
  .footer-grid{grid-template-columns:1fr;gap:30px}
  .guard-band,.cta-band{padding:28px 22px}
  .cta-band{flex-direction:column;align-items:flex-start}
  .cta-actions{width:100%}
  .cta-actions .btn{width:100%}
  .footer{padding:48px 0 24px}
  .split-text h3{font-size:19px}
}

/* roulang page: category2 */
:root{
  --brand:#C9743C;
  --brand-deep:#9E5527;
  --brand-soft:#F3DCC8;
  --accent:#376B63;
  --accent-soft:#DCE8E4;
  --bg:#F7F3ED;
  --card:#FFFFFF;
  --card-2:#EFE8DE;
  --ink:#23201C;
  --muted:#6B625A;
  --line:#E2D9CD;
  --gold:#E8B44A;
  --grad-brand:linear-gradient(135deg,#C9743C 0%,#E8B44A 100%);
  --grad-soft:linear-gradient(135deg,#F3DCC8 0%,#DCE8E4 100%);
  --r-lg:24px;
  --r-md:16px;
  --r-sm:12px;
  --r-pill:999px;
  --sh-1:0 1px 2px rgba(35,32,28,.04), 0 12px 32px -12px rgba(35,32,28,.14);
  --sh-2:0 2px 6px rgba(35,32,28,.06), 0 22px 46px -18px rgba(35,32,28,.24);
  --sidebar:264px;
}
*,*::before,*::after{box-sizing:border-box}
html{-webkit-text-size-adjust:100%}
body{
  margin:0;
  background:var(--bg);
  color:var(--ink);
  font-family:"PingFang SC","Microsoft YaHei","Noto Sans SC","Hiragino Sans GB",Helvetica,Arial,sans-serif;
  font-size:16px;
  line-height:1.9;
  -webkit-font-smoothing:antialiased;
}
h1,h2,h3,h4,p,ul,ol,figure{margin:0;padding:0}
h1,h2,h3,h4{font-weight:700;line-height:1.35;letter-spacing:.01em}
ul,ol{list-style:none}
img{max-width:100%;display:block}
a{color:var(--brand-deep);text-decoration:none;transition:color .2s ease}
a:hover{color:var(--brand)}
button{font-family:inherit}
:focus-visible{outline:2px solid var(--brand);outline-offset:2px;box-shadow:0 0 0 4px rgba(243,220,200,.7)}
.skip-link{position:absolute;left:-9999px;top:0;background:var(--ink);color:#fff;padding:10px 18px;border-radius:0 0 12px 0;z-index:999}
.skip-link:focus{left:0;color:#fff}
.num{font-variant-numeric:tabular-nums}

/* ---------- 侧栏 ---------- */
.sidebar{
  position:fixed;top:0;left:0;width:var(--sidebar);height:100vh;
  background:#fff;border-right:1px solid var(--line);
  display:flex;flex-direction:column;z-index:60;
}
.sidebar-brand{
  height:96px;display:flex;align-items:center;gap:12px;
  padding:0 20px;border-bottom:1px solid var(--line);flex:none;
}
.brand-mark{
  width:40px;height:40px;border-radius:14px;background:var(--grad-brand);color:#fff;
  display:inline-flex;align-items:center;justify-content:center;font-size:17px;flex:none;
  box-shadow:0 8px 18px -8px rgba(201,116,60,.75);
}
.brand-txt{display:flex;flex-direction:column;min-width:0}
.brand-txt strong{font-size:16px;font-weight:700;letter-spacing:.02em;line-height:1.3}
.brand-txt em{
  font-style:normal;font-size:11px;letter-spacing:.08em;opacity:.7;
  color:var(--muted);white-space:nowrap;line-height:1.4;
}
.nav-list{padding:14px 12px;display:flex;flex-direction:column;gap:6px}
.nav-item{
  position:relative;display:flex;align-items:center;gap:10px;
  height:48px;padding:0 14px 0 20px;border-radius:var(--r-sm);
  color:var(--muted);font-size:15px;transition:background .2s ease,color .2s ease;
}
.nav-item i{font-size:14px;width:16px;text-align:center;color:var(--accent)}
.nav-item:hover{background:var(--card-2);color:var(--brand-deep)}
.nav-item.is-active{background:var(--brand-soft);color:var(--brand-deep);font-weight:600}
.nav-item.is-active i{color:var(--brand-deep)}
.nav-item.is-active::before{
  content:"";position:absolute;left:0;top:10px;bottom:10px;width:4px;
  border-radius:var(--r-pill);background:var(--grad-brand);
}
.sidebar-foot{
  margin-top:auto;padding:20px;border-top:1px solid var(--line);
  display:flex;flex-direction:column;gap:10px;
}
.sidebar-foot p{font-size:12px;letter-spacing:.06em;color:var(--muted)}
.sidebar-foot .phone{font-size:18px;font-weight:700;color:var(--ink);letter-spacing:.02em}
.sidebar-foot .phone:hover{color:var(--brand-deep)}

/* ---------- 移动顶栏 ---------- */
.topbar{
  display:none;position:sticky;top:0;height:64px;align-items:center;
  justify-content:space-between;padding:0 18px;background:#fff;
  border-bottom:1px solid var(--line);box-shadow:0 1px 2px rgba(35,32,28,.05);z-index:70;
}
.topbar-brand{display:flex;align-items:center;gap:10px;color:var(--ink)}
.topbar-brand strong{font-size:16px;letter-spacing:.02em}
.hamburger{
  width:44px;height:44px;border-radius:var(--r-sm);border:1px solid var(--line);
  background:#fff;color:var(--ink);font-size:17px;cursor:pointer;
  display:inline-flex;align-items:center;justify-content:center;
}
.hamburger:hover{border-color:var(--brand);color:var(--brand-deep)}
.backdrop{
  position:fixed;inset:0;background:rgba(35,32,28,.45);
  opacity:0;pointer-events:none;transition:opacity .25s ease;z-index:55;display:none;
}

/* ---------- 布局 ---------- */
.content{margin-left:var(--sidebar);min-height:100vh;display:flex;flex-direction:column}
.site-main{flex:1;padding-bottom:96px}
.container{width:100%;max-width:1200px;margin:0 auto;padding:0 48px}
.sec{margin-top:96px}
.breadcrumb{
  display:flex;align-items:center;gap:8px;font-size:13px;color:var(--muted);
  padding-top:32px;
}
.breadcrumb a{color:var(--muted)}
.breadcrumb a:hover{color:var(--brand-deep)}
.breadcrumb span.sep{opacity:.55}
.breadcrumb .now{color:var(--ink);font-weight:600}

/* ---------- Hero ---------- */
.hero-wide{
  position:relative;border-radius:var(--r-lg);overflow:hidden;min-height:320px;
  display:flex;align-items:flex-end;box-shadow:var(--sh-1);margin-top:20px;
}
.hero-wide > img{position:absolute;inset:0;width:100%;height:100%;object-fit:cover;z-index:0}
.hero-wide::after{
  content:"";position:absolute;left:0;right:0;bottom:0;height:62%;
  background:linear-gradient(180deg,rgba(35,32,28,0) 0%,rgba(35,32,28,.68) 100%);z-index:0;
}
.hero-overlay{position:relative;z-index:1;width:100%;padding:38px;display:flex;flex-direction:column;gap:12px}
.chip{
  display:inline-flex;align-items:center;gap:6px;align-self:flex-start;
  padding:6px 14px;border-radius:var(--r-pill);font-size:12px;font-weight:600;letter-spacing:.04em;
}
.chip-light{background:rgba(255,255,255,.9);color:var(--brand-deep)}
.hero-overlay h1{
  color:#fff;font-size:clamp(28px,3.6vw,44px);line-height:1.3;
  text-shadow:0 2px 18px rgba(35,32,28,.35);
}
.hero-sub{color:rgba(255,255,255,.88);font-size:15px;max-width:680px;line-height:1.8}

/* ---------- 说明 + 数据徽章 ---------- */
.intro-grid{display:grid;grid-template-columns:7fr 5fr;gap:40px;align-items:start}
.intro-grid h2{font-size:26px;margin-bottom:16px}
.sec-title{position:relative;padding-left:16px;font-size:26px;margin-bottom:14px}
.sec-title::before{
  content:"";position:absolute;left:0;top:6px;bottom:6px;width:4px;
  border-radius:var(--r-pill);background:var(--grad-brand);
}
.intro-lead p{color:var(--muted);font-size:16px;margin-bottom:14px}
.badge-band{display:grid;grid-template-columns:repeat(2,1fr);gap:14px}
.badge-band li{
  display:flex;align-items:center;gap:10px;background:#fff;border:1px solid var(--line);
  border-radius:var(--r-pill);padding:12px 16px;box-shadow:var(--sh-1);
}
.badge-ico{
  width:20px;height:20px;border-radius:50%;background:var(--brand-soft);color:var(--brand-deep);
  display:inline-flex;align-items:center;justify-content:center;font-size:10px;flex:none;
}
.badge-band b{font-size:18px;font-weight:700;font-variant-numeric:tabular-nums;color:var(--ink)}
.badge-band em{font-style:normal;font-size:12px;color:var(--muted);white-space:nowrap}

/* ---------- 板块头 ---------- */
.sec-head{display:flex;align-items:flex-end;justify-content:space-between;gap:24px;margin-bottom:26px}
.sec-head h2{font-size:26px;margin-bottom:10px}
.sec-head p{color:var(--muted);font-size:15px;max-width:760px}
.rail-nav{display:flex;gap:10px;flex:none}
.rail-btn{
  width:44px;height:44px;border-radius:50%;border:1px solid var(--line);background:#fff;
  color:var(--brand-deep);cursor:pointer;font-size:14px;
  display:inline-flex;align-items:center;justify-content:center;transition:all .22s ease;
}
.rail-btn:hover{background:var(--brand-soft);border-color:var(--brand-soft);transform:translateY(-2px)}

/* ---------- 横向卡片轨 ---------- */
.rail{
  display:flex;gap:20px;overflow-x:auto;scroll-snap-type:x mandatory;
  padding:6px 4px 18px;scrollbar-width:thin;scrollbar-color:var(--line) transparent;
}
.rail::-webkit-scrollbar{height:6px}
.rail::-webkit-scrollbar-thumb{background:var(--line);border-radius:99px}
.rail-card{
  flex:0 0 320px;scroll-snap-align:start;background:#fff;border:1px solid var(--line);
  border-radius:var(--r-md);overflow:hidden;box-shadow:var(--sh-1);
  display:flex;flex-direction:column;transition:transform .25s ease,box-shadow .25s ease;
}
.rail-card:hover{transform:translateY(-3px);box-shadow:var(--sh-2)}
.rail-media{aspect-ratio:16/9;overflow:hidden;background:var(--card-2)}
.rail-media img{width:100%;height:100%;object-fit:cover;transition:transform .45s ease}
.rail-card:hover .rail-media img{transform:scale(1.03)}
.rail-body{padding:18px 20px 22px;display:flex;flex-direction:column;gap:10px;flex:1}
.rail-body h3{font-size:18px;font-weight:600}
.rail-body p{font-size:14px;color:var(--muted);line-height:1.75}
.tag{
  align-self:flex-start;padding:4px 12px;border-radius:var(--r-pill);
  background:var(--accent-soft);color:var(--accent);font-size:12px;font-weight:600;
}
.link-arrow{
  margin-top:auto;font-size:14px;font-weight:600;color:var(--brand-deep);
  display:inline-flex;align-items:center;gap:8px;
}
.link-arrow i{transition:transform .22s ease;font-size:12px}
.link-arrow:hover i{transform:translateX(4px)}

/* ---------- 深色参数带 ---------- */
.dark-band{
  position:relative;overflow:hidden;background:var(--ink);color:#F7F3ED;
  border-radius:var(--r-lg);padding:48px;box-shadow:var(--sh-2);
}
.dark-band::after{
  content:"";position:absolute;right:-90px;top:-90px;width:280px;height:280px;
  border-radius:50%;background:var(--grad-brand);opacity:.18;
}
.dark-head{position:relative;z-index:1;max-width:720px;margin-bottom:32px}
.dark-head h2{color:#fff;font-size:26px;margin-bottom:12px}
.dark-head p{color:rgba(247,243,237,.72);font-size:15px}
.param-grid{position:relative;z-index:1;display:grid;grid-template-columns:repeat(4,1fr);gap:18px}
.param-card{
  background:rgba(255,255,255,.06);border:1px solid rgba(247,243,237,.14);
  border-radius:var(--r-md);padding:22px;display:flex;flex-direction:column;gap:8px;
  transition:background .22s ease,transform .22s ease;
}
.param-card:hover{background:rgba(255,255,255,.1);transform:translateY(-3px)}
.param-no{
  font-size:12px;font-weight:700;letter-spacing:.1em;
  background:var(--grad-brand);-webkit-background-clip:text;background-clip:text;color:transparent;
}
.param-card h3{font-size:17px;color:#fff}
.param-card p{font-size:14px;color:rgba(247,243,237,.72);line-height:1.75}

/* ---------- 场景 ---------- */
.scene-grid{margin-top:-10px}
.scene-card{
  height:100%;background:#fff;border:1px solid var(--line);border-radius:var(--r-md);
  padding:24px;display:flex;flex-direction:column;gap:10px;box-shadow:var(--sh-1);
  transition:transform .25s ease,box-shadow .25s ease,border-color .25s ease;
}
.scene-card:hover{transform:translateY(-3px);box-shadow:var(--sh-2);border-color:var(--brand-soft)}
.scene-ico{
  width:44px;height:44px;border-radius:14px;background:var(--grad-soft);color:var(--brand-deep);
  display:inline-flex;align-items:center;justify-content:center;font-size:18px;
}
.scene-card h3{font-size:18px;font-weight:600}
.scene-card p{font-size:14px;color:var(--muted);line-height:1.78}

/* ---------- 步骤 ---------- */
.steps{display:grid;grid-template-columns:repeat(3,1fr);gap:20px;margin-top:26px}
.step{
  position:relative;background:#fff;border:1px solid var(--line);border-radius:var(--r-md);
  padding:24px 24px 24px 24px;box-shadow:var(--sh-1);display:flex;flex-direction:column;gap:8px;
}
.step-no{
  width:34px;height:34px;border-radius:50%;background:var(--grad-brand);color:#fff;
  font-size:14px;font-weight:700;display:inline-flex;align-items:center;justify-content:center;
  font-variant-numeric:tabular-nums;
}
.step h3{font-size:17px;font-weight:600}
.step p{font-size:14px;color:var(--muted);line-height:1.78}

/* ---------- FAQ ---------- */
.faq-list{margin-top:24px}
.faq-item{
  background:#fff;border:1px solid var(--line);border-radius:var(--r-md);
  margin-bottom:14px;overflow:hidden;box-shadow:var(--sh-1);transition:border-color .22s ease;
}
.faq-item:hover{border-color:var(--brand-soft)}
.faq-item summary{
  list-style:none;cursor:pointer;padding:18px 22px;font-size:17px;font-weight:600;
  display:flex;align-items:center;justify-content:space-between;gap:16px;
}
.faq-item summary::-webkit-details-marker{display:none}
.faq-item summary i{
  color:var(--brand);font-size:15px;transition:transform .25s ease;flex:none;
}
.faq-item[open] summary i{transform:rotate(45deg)}
.faq-body{padding:0 22px 20px;font-size:15px;color:var(--muted);line-height:1.85}

/* ---------- 订阅 ---------- */
.subscribe{
  background:var(--grad-soft);border-radius:var(--r-lg);padding:44px;
  display:grid;grid-template-columns:5fr 7fr;gap:44px;align-items:center;
}
.sub-text h2{font-size:26px;margin-bottom:12px}
.sub-text p{color:#4A423B;font-size:15px;margin-bottom:16px}
.tick-list{display:flex;flex-direction:column;gap:8px}
.tick-list li{display:flex;align-items:center;gap:10px;font-size:14px;color:#4A423B}
.tick-list i{color:var(--accent);font-size:13px}
.sub-form{background:#fff;border-radius:var(--r-md);padding:26px;box-shadow:var(--sh-1);display:flex;flex-direction:column;gap:12px}
.sub-form label{font-size:14px;font-weight:600}
.sub-form input{
  height:48px;border-radius:var(--r-sm);border:1px solid var(--line);padding:0 16px;
  font-size:15px;font-family:inherit;color:var(--ink);background:#fff;width:100%;
  transition:border-color .2s ease,box-shadow .2s ease;
}
.sub-form input::placeholder{color:#A79C90}
.sub-form input:focus{outline:none;border-color:var(--brand);box-shadow:0 0 0 4px rgba(243,220,200,.8)}
.form-msg{font-size:13px;line-height:1.6;border-radius:var(--r-sm);padding:0;display:none}
.form-msg.is-ok{display:block;background:var(--accent-soft);color:var(--accent);padding:10px 14px}
.form-msg.is-error{display:block;background:var(--brand-soft);color:var(--brand-deep);padding:10px 14px}
.form-note{font-size:12px;color:var(--muted)}

/* ---------- CTA ---------- */
.cta-bar{
  background:#fff;border:1px solid var(--line);border-radius:var(--r-lg);
  padding:40px 44px;display:flex;align-items:center;justify-content:space-between;gap:32px;
  box-shadow:var(--sh-1);position:relative;overflow:hidden;
}
.cta-bar::before{
  content:"";position:absolute;left:0;top:0;bottom:0;width:6px;background:var(--grad-brand);
}
.cta-bar h2{font-size:24px;margin-bottom:10px}
.cta-bar p{color:var(--muted);font-size:15px;max-width:640px}
.cta-actions{display:flex;gap:14px;flex:none;flex-wrap:wrap}

/* ---------- 按钮 ---------- */
.btn{
  display:inline-flex;align-items:center;justify-content:center;gap:8px;
  height:48px;padding:0 26px;border-radius:var(--r-pill);font-size:15px;font-weight:600;
  border:1.5px solid transparent;cursor:pointer;transition:transform .2s ease,box-shadow .2s ease,background .2s ease,color .2s ease;
  white-space:nowrap;
}
.btn-primary{background:var(--grad-brand);color:#2A1B0E;box-shadow:0 10px 24px -12px rgba(201,116,60,.9)}
.btn-primary:hover{color:#2A1B0E;transform:translateY(-3px);box-shadow:0 16px 32px -14px rgba(201,116,60,.95)}
.btn-ghost{background:transparent;border-color:var(--brand);color:var(--brand-deep)}
.btn-ghost:hover{background:var(--brand-soft);color:var(--brand-deep);transform:translateY(-3px)}
.btn-sm{height:40px;padding:0 18px;font-size:14px}
.btn-block{width:100%}
.btn:active{transform:translateY(-1px)}

/* ---------- 页脚 ---------- */
.footer{background:var(--ink);color:#F7F3ED;border-top:1px solid var(--line);padding:64px 0 28px;margin-top:0}
.footer-grid{display:grid;grid-template-columns:2fr 1fr 1.4fr;gap:44px}
.footer-brand{display:flex;align-items:center;gap:12px;margin-bottom:16px}
.footer-brand strong{display:block;font-size:16px;color:#fff}
.footer-brand em{
  display:block;font-style:normal;font-size:11px;letter-spacing:.08em;
  color:rgba(247,243,237,.72);white-space:nowrap;
}
.footer-col p{color:rgba(247,243,237,.7);font-size:14px;line-height:1.85}
.footer-col h4{font-size:15px;color:#fff;margin-bottom:16px}
.footer-col ul{display:flex;flex-direction:column;gap:10px}
.footer-col ul li{font-size:14px;color:rgba(247,243,237,.7)}
.footer-col ul a{color:rgba(247,243,237,.7)}
.footer-col ul a:hover{color:var(--brand-soft)}
.footer-col .btn{margin-top:18px}
.footer-bottom{
  margin-top:48px;padding-top:22px;border-top:1px solid rgba(247,243,237,.16);
  display:flex;justify-content:space-between;gap:16px;flex-wrap:wrap;
  font-size:13px;color:rgba(247,243,237,.58);
}

/* ---------- 响应式 ---------- */
@media (min-width:1200px){
  :root{--sidebar:280px}
  .container{max-width:1200px}
}
@media (max-width:1199px){
  .hero-overlay h1{font-size:clamp(26px,3.4vw,38px)}
  .rail-card{flex:0 0 292px}
  .param-grid{gap:14px}
  .steps{gap:16px}
}
@media (max-width:1023px){
  .sidebar{
    transform:translateX(-100%);transition:transform .28s ease;
    width:280px;box-shadow:0 0 48px rgba(35,32,28,.28);border-right:none;
  }
  body.nav-open .sidebar{transform:translateX(0)}
  .topbar{display:flex}
  .backdrop{display:block}
  body.nav-open .backdrop{opacity:1;pointer-events:auto}
  body.nav-open{overflow:hidden}
  .content{margin-left:0}
  .container{padding:0 22px}
  .sec{margin-top:64px}
  .site-main{padding-bottom:64px}
  .intro-grid{grid-template-columns:1fr;gap:26px}
  .dark-band{padding:34px}
  .param-grid{grid-template-columns:repeat(2,1fr)}
  .steps{grid-template-columns:repeat(2,1fr)}
  .subscribe{grid-template-columns:1fr;gap:28px;padding:30px}
  .cta-bar{flex-direction:column;align-items:flex-start;padding:32px}
  .cta-actions{width:100%}
  .cta-actions .btn{flex:1 1 auto}
  .footer-grid{grid-template-columns:1fr;gap:34px}
  .breadcrumb{padding-top:22px}
}
@media (max-width:767px){
  .sec-head{flex-direction:column;align-items:flex-start;gap:14px}
  .rail-nav{align-self:flex-start}
  .steps{grid-template-columns:1fr}
  .hero-wide{min-height:280px}
  .hero-overlay{padding:24px}
  .hero-sub{font-size:14px}
}
@media (max-width:520px){
  body{font-size:16px}
  .container{padding:0 16px}
  .sec{margin-top:56px}
  .hero-wide{min-height:260px}
  .hero-overlay{padding:20px}
  .hero-overlay h1{font-size:26px}
  .param-grid{grid-template-columns:1fr}
  .badge-band{grid-template-columns:1fr}
  .rail-card{flex:0 0 258px}
  .dark-band{padding:26px;border-radius:var(--r-md)}
  .subscribe{padding:22px;border-radius:var(--r-md)}
  .sub-form{padding:20px}
  .cta-bar{padding:26px}
  .cta-actions .btn{width:100%}
  .btn{width:100%}
  .btn-sm{width:auto}
  .footer{padding:48px 0 24px}
  .footer-bottom{margin-top:32px}
}