/* roulang page: index */
:root{
  --brand:#0E7C6B;
  --brand-700:#0A5F52;
  --brand-50:#E8F3F0;
  --accent:#E4572E;
  --highlight:#FFC24B;
  --bg:#F5F7F4;
  --surface:#FFFFFF;
  --ink-block:#0C1A17;
  --text:#16211E;
  --muted:#5B6B66;
  --line:#DDE5E1;
  --ok:#2E9E6B;
  --warn:#E0A100;
  --err:#C8442E;
  --r-card:16px;
  --r-img:12px;
  --r-btn:10px;
  --r-pill:999px;
  --sh-1:0 1px 2px rgba(12,26,23,.05),0 1px 3px rgba(12,26,23,.06);
  --sh-2:0 10px 26px rgba(12,26,23,.10);
  --sh-3:0 16px 44px rgba(14,124,107,.26);
  --s-8:8px;--s-16:16px;--s-24:24px;--s-32:32px;--s-48:48px;--s-64:64px;--s-88:88px;
  --font:"PingFang SC","Hiragino Sans GB","Microsoft YaHei","Source Han Sans SC","Noto Sans CJK SC",system-ui,-apple-system,"Segoe UI",Roboto,sans-serif;
  --mono:"SFMono-Regular",Consolas,"Liberation Mono",Menlo,monospace;
}
*,*::before,*::after{box-sizing:border-box;}
html{-webkit-text-size-adjust:100%;scroll-behavior:smooth;}
body{
  margin:0;padding:0;background:var(--bg);color:var(--text);
  font-family:var(--font);font-size:16px;line-height:1.85;letter-spacing:.2px;
  overflow-x:hidden;
}
img{max-width:100%;display:block;border-radius:var(--r-img);}
a{color:var(--brand);text-decoration:none;transition:color .18s ease,opacity .18s ease;}
a:hover{color:var(--brand-700);}
h1,h2,h3,h4{margin:0;font-weight:700;color:var(--text);letter-spacing:-.2px;}
h1{font-size:40px;line-height:1.25;letter-spacing:-.5px;}
h2{font-size:30px;line-height:1.3;}
h3{font-size:22px;line-height:1.4;font-weight:600;}
h4{font-size:18px;line-height:1.5;font-weight:600;}
p{margin:0 0 1.2em;}
ul{margin:0;padding:0;list-style:none;}
button,input{font-family:inherit;font-size:inherit;}
:focus-visible{outline:2px solid var(--brand);outline-offset:2px;border-radius:6px;}
.container{width:100%;max-width:1200px;margin:0 auto;padding:0 24px;}
.num{font-family:var(--mono);font-variant-numeric:tabular-nums;font-feature-settings:"tnum";}

/* ---------- 顶栏 ---------- */
.topbar{height:36px;background:var(--ink-block);color:rgba(255,255,255,.86);display:flex;align-items:center;font-size:13px;overflow:hidden;}
.topbar .container{display:flex;align-items:center;justify-content:space-between;gap:16px;}
.topbar-notice{position:relative;flex:1;min-width:0;overflow:hidden;white-space:nowrap;}
.topbar-notice span{display:inline-block;padding-left:100%;animation:slideNotice 26s linear infinite;}
@keyframes slideNotice{0%{transform:translateX(0);}100%{transform:translateX(-100%);}}
.topbar-links{display:flex;gap:20px;flex-shrink:0;}
.topbar-links a{color:rgba(255,255,255,.78);font-size:13px;}
.topbar-links a:hover{color:#fff;text-decoration:underline;}

/* ---------- 主导航 ---------- */
.site-header{position:sticky;top:0;z-index:1030;background:rgba(255,255,255,.94);backdrop-filter:saturate(180%) blur(8px);border-bottom:1px solid var(--line);transition:box-shadow .2s ease,background .2s ease;}
.site-header.is-scrolled{box-shadow:0 6px 20px rgba(12,26,23,.09);}
.nav-main{display:flex;align-items:center;justify-content:space-between;gap:24px;height:76px;}
.brand{display:flex;align-items:center;gap:10px;min-width:212px;text-decoration:none;color:var(--text);}
.brand:hover{color:var(--text);}
.brand-mark{width:38px;height:38px;flex:0 0 38px;display:grid;place-items:center;border-radius:12px;background:var(--brand-50);border:1px solid var(--line);}
.brand-mark svg{width:22px;height:22px;stroke:var(--brand);fill:none;stroke-width:1.5;stroke-linecap:round;stroke-linejoin:round;}
.brand-text{display:flex;flex-direction:column;line-height:1.15;}
.brand-text b{font-size:18px;font-weight:700;letter-spacing:-.2px;}
.brand-text small{font-size:11px;color:var(--muted);letter-spacing:2px;}
.nav-chips{display:flex;align-items:center;gap:8px;flex:1;justify-content:center;overflow-x:auto;scrollbar-width:none;}
.nav-chips::-webkit-scrollbar{display:none;}
.chip{
  display:inline-flex;align-items:center;height:40px;padding:0 18px;border-radius:var(--r-pill);
  background:var(--surface);border:1px solid var(--line);color:var(--text);font-size:15px;white-space:nowrap;
  transition:all .18s ease;
}
.chip:hover{border-color:var(--brand);background:var(--brand-50);color:var(--brand-700);}
.chip.is-active{background:var(--brand);border-color:var(--brand);color:#fff;box-shadow:inset 0 1px 2px rgba(0,0,0,.12);}
.nav-actions{display:flex;align-items:center;gap:12px;flex-shrink:0;margin-left:24px;}
.hamburger{display:none;width:44px;height:44px;border:1px solid var(--line);background:var(--surface);border-radius:10px;align-items:center;justify-content:center;cursor:pointer;}
.hamburger span{display:block;width:18px;height:1.6px;background:var(--text);position:relative;}
.hamburger span::before,.hamburger span::after{content:"";position:absolute;left:0;width:18px;height:1.6px;background:var(--text);}
.hamburger span::before{top:-6px;}
.hamburger span::after{top:6px;}
.mobile-drawer{display:none;border-top:1px solid var(--line);background:var(--surface);padding:16px 0 24px;}
.mobile-drawer.is-open{display:block;}
.mobile-drawer li{margin-bottom:8px;}
.mobile-drawer .chip{width:100%;justify-content:flex-start;height:46px;}
.mobile-drawer .btn-primary-brand{width:100%;margin-top:12px;}

/* ---------- 按钮 ---------- */
.btn-brand,.btn-ghost,.btn-link-arrow{
  display:inline-flex;align-items:center;justify-content:center;gap:8px;
  height:44px;padding:0 24px;border-radius:var(--r-btn);font-size:15px;font-weight:600;
  border:1px solid transparent;cursor:pointer;transition:all .18s ease;white-space:nowrap;
}
.btn-brand{background:var(--brand);color:#fff;box-shadow:var(--sh-1);}
.btn-brand:hover{background:var(--brand-700);color:#fff;transform:translateY(-1px);box-shadow:var(--sh-3);}
.btn-brand:active{transform:translateY(0);box-shadow:var(--sh-1);}
.btn-ghost{background:var(--surface);color:var(--brand);border-color:var(--brand);}
.btn-ghost:hover{background:var(--brand-50);color:var(--brand-700);}
.btn-ghost.is-inverse{background:transparent;color:#fff;border-color:rgba(255,255,255,.5);}
.btn-ghost.is-inverse:hover{background:rgba(255,255,255,.12);color:#fff;}
.btn-sm{height:34px;padding:0 16px;font-size:13px;border-radius:8px;}
.btn-link-arrow{height:auto;padding:0;background:none;border:none;color:var(--brand);font-weight:600;}
.btn-link-arrow .arw{display:inline-block;transition:transform .18s ease;}
.btn-link-arrow:hover .arw{transform:translateX(3px);}

/* ---------- 倒计时条 ---------- */
.countdown-bar{
  background:linear-gradient(115deg,#0A5F52 0%,#0E7C6B 46%,#128D78 100%);
  color:#fff;padding:12px 0;
}
.countdown-inner{display:flex;align-items:center;justify-content:space-between;gap:24px;min-height:48px;}
.cd-label{display:flex;flex-direction:column;gap:2px;min-width:172px;}
.cd-label b{font-size:15px;font-weight:700;letter-spacing:.4px;}
.cd-label small{font-size:12px;color:rgba(255,255,255,.72);}
.cd-clock{display:flex;align-items:flex-end;gap:12px;}
.cd-unit{display:flex;flex-direction:column;align-items:center;min-width:56px;}
.cd-unit .cd-num{
  font-family:var(--mono);font-size:30px;line-height:1;font-weight:700;color:var(--highlight);
  background:rgba(0,0,0,.18);border-radius:10px;padding:6px 8px;min-width:56px;text-align:center;
  animation:floatTick 3.2s ease-in-out infinite;
}
.cd-unit:nth-child(2) .cd-num{animation-delay:.4s;}
.cd-unit:nth-child(3) .cd-num{animation-delay:.8s;}
.cd-unit:nth-child(4) .cd-num{animation-delay:1.2s;}
.cd-unit em{font-style:normal;font-size:11px;color:rgba(255,255,255,.72);margin-top:6px;letter-spacing:1px;}
@keyframes floatTick{0%,100%{transform:translateY(0);}50%{transform:translateY(-3px);}}
.cd-clock .sep{color:rgba(255,255,255,.45);font-size:20px;padding-bottom:20px;}

/* ---------- Hero ---------- */
.hero{
  position:relative;overflow:hidden;
  background:linear-gradient(180deg,#EDF6F3 0%,#F5F7F4 62%,#F5F7F4 100%);
  padding:64px 0 72px;
}
.hero-cloud{position:absolute;top:-40px;right:-60px;width:420px;opacity:.08;pointer-events:none;}
.hero-grid{display:grid;grid-template-columns:minmax(0,3fr) minmax(0,2fr);gap:48px;align-items:center;position:relative;}
.hero h1{font-size:40px;line-height:1.25;letter-spacing:-.5px;margin-bottom:16px;}
.hero-sub{font-size:16px;color:var(--muted);margin-bottom:28px;max-width:520px;}
.hero-btns{display:flex;gap:14px;flex-wrap:wrap;margin-bottom:28px;}
.hero-points{display:flex;flex-direction:column;gap:12px;}
.hero-points li{display:flex;align-items:center;gap:10px;font-size:15px;color:var(--text);}
.hero-points svg{width:18px;height:18px;flex:0 0 18px;stroke:var(--brand);fill:none;stroke-width:2;stroke-linecap:round;stroke-linejoin:round;}
.hero-visual{position:relative;}
.hero-visual img{width:100%;aspect-ratio:16/10;object-fit:cover;border-radius:20px;box-shadow:var(--sh-2);}
.hero-veil{position:absolute;inset:0;border-radius:20px;background:rgba(14,124,107,.08);pointer-events:none;}
.hero-badge{
  position:absolute;right:16px;bottom:16px;background:var(--surface);border:1px solid var(--line);
  border-radius:14px;padding:12px 16px;box-shadow:var(--sh-2);min-width:150px;
}
.hero-badge b{display:block;font-family:var(--mono);font-size:22px;line-height:1.1;color:var(--brand);}
.hero-badge span{font-size:12px;color:var(--muted);}

/* ---------- 区块 ---------- */
.section{padding:88px 0;background:var(--bg);}
.section.is-plain{background:var(--surface);}
.section-head{display:flex;align-items:flex-end;justify-content:space-between;gap:24px;margin-bottom:40px;flex-wrap:wrap;}
.section-head p{margin:8px 0 0;color:var(--muted);font-size:15px;}
.eyebrow{display:inline-flex;align-items:center;gap:8px;font-size:13px;color:var(--brand);font-weight:600;letter-spacing:1px;margin-bottom:10px;}
.eyebrow::before{content:"";width:16px;height:2px;background:var(--brand);border-radius:2px;}

/* ---------- 时间轴卖点 ---------- */
.timeline{position:relative;padding-left:36px;}
.timeline::before{content:"";position:absolute;left:11px;top:8px;bottom:8px;width:2px;background:var(--line);border-radius:2px;}
.tl-item{position:relative;padding-bottom:32px;}
.tl-item:last-child{padding-bottom:0;}
.tl-item::before{
  content:"";position:absolute;left:-30px;top:6px;width:14px;height:14px;border-radius:50%;
  background:var(--surface);border:3px solid var(--brand);
}
.tl-no{font-family:var(--mono);font-size:13px;color:var(--brand);font-weight:700;letter-spacing:2px;display:block;margin-bottom:6px;}
.tl-item h3{font-size:20px;margin-bottom:8px;}
.tl-item p{margin:0 0 4px;color:var(--muted);font-size:15px;max-width:720px;}
.tl-side{display:grid;gap:16px;}
.tl-card{background:var(--surface);border:1px solid var(--line);border-radius:var(--r-card);padding:24px;box-shadow:var(--sh-1);transition:box-shadow .18s ease,transform .18s ease;}
.tl-card:hover{box-shadow:var(--sh-2);transform:translateY(-2px);}
.tl-layout{display:grid;grid-template-columns:7fr 5fr;gap:48px;align-items:start;}
.tl-card h4{margin-bottom:8px;}
.tl-card p{margin:0;color:var(--muted);font-size:14px;}
.tl-card .badge-soft{margin-bottom:12px;}

/* ---------- 功能图墙 ---------- */
.filter-row{display:flex;gap:8px;flex-wrap:wrap;margin-bottom:28px;}
.wall{display:grid;grid-template-columns:repeat(4,minmax(0,1fr));grid-auto-rows:186px;gap:16px;}
.wall-card{position:relative;overflow:hidden;border-radius:var(--r-card);border:1px solid var(--line);background:var(--surface);display:block;}
.wall-card:first-child{grid-column:span 2;grid-row:span 2;}
.wall-card img{width:100%;height:100%;object-fit:cover;border-radius:0;transition:transform .32s cubic-bezier(.2,.7,.3,1);}
.wall-card:hover img{transform:scale(1.04);}
.wall-veil{position:absolute;inset:0;background:linear-gradient(180deg,rgba(12,26,23,0) 38%,rgba(12,26,23,.78) 100%);transition:background .22s ease;}
.wall-card:hover .wall-veil{background:linear-gradient(180deg,rgba(12,26,23,.08) 20%,rgba(12,26,23,.88) 100%);}
.wall-info{position:absolute;left:18px;right:18px;bottom:16px;color:#fff;}
.wall-info .tag{display:inline-flex;align-items:center;height:24px;padding:0 10px;border-radius:var(--r-pill);background:rgba(255,255,255,.92);color:var(--brand-700);font-size:12px;font-weight:600;margin-bottom:8px;}
.wall-info h3{color:#fff;font-size:17px;font-weight:600;line-height:1.4;}
.wall-card:first-child .wall-info h3{font-size:22px;}
.wall-card:first-child .wall-info{padding-bottom:6px;}

/* ---------- 资讯列表（CMS 预留区） ---------- */
.news-list{border-top:1px solid var(--line);}
.news-item{border-bottom:1px solid var(--line);}
.news-link{display:flex;align-items:flex-start;gap:24px;padding:24px 4px;color:var(--text);transition:transform .18s ease;}
.news-link:hover{transform:translateX(2px);color:var(--text);}
.news-link:hover .news-title{color:var(--brand);}
.news-date{flex:0 0 72px;font-family:var(--mono);font-size:13px;color:var(--brand);font-weight:600;line-height:1.7;padding-top:4px;}
.news-body{flex:1;min-width:0;}
.news-title{font-size:18px;line-height:1.5;font-weight:600;margin-bottom:6px;display:-webkit-box;-webkit-line-clamp:2;-webkit-box-orient:vertical;overflow:hidden;transition:color .18s ease;}
.news-desc{display:-webkit-box;-webkit-line-clamp:2;-webkit-box-orient:vertical;overflow:hidden;color:var(--muted);font-size:14px;line-height:1.75;margin-bottom:10px;}
.news-meta{display:flex;align-items:center;gap:10px;font-size:13px;color:var(--muted);}
.badge-soft{display:inline-flex;align-items:center;height:24px;padding:0 10px;border-radius:var(--r-pill);background:var(--brand-50);color:var(--brand-700);font-size:12px;font-weight:600;}
.badge-hot{display:inline-flex;align-items:center;height:24px;padding:0 10px;border-radius:var(--r-pill);background:var(--highlight);color:#5B3D00;font-size:12px;font-weight:700;}
.news-arrow{flex:0 0 24px;color:var(--brand);font-size:18px;line-height:1.6;transition:transform .18s ease;}
.news-link:hover .news-arrow{transform:translateX(4px);}
.empty-state{min-height:200px;display:flex;flex-direction:column;align-items:center;justify-content:center;gap:14px;text-align:center;padding:32px 16px;color:var(--muted);border-bottom:1px solid var(--line);}
.empty-state svg{width:40px;height:40px;stroke:var(--brand);fill:none;stroke-width:1.5;stroke-linecap:round;stroke-linejoin:round;opacity:.7;}
.empty-state p{margin:0;font-size:15px;}

/* ---------- CTA 通栏 ---------- */
.cta-band{background:var(--ink-block);color:#fff;padding:64px 0;position:relative;overflow:hidden;}
.cta-band::after{content:"";position:absolute;right:-80px;bottom:-120px;width:360px;height:360px;border-radius:50%;background:rgba(14,124,107,.28);filter:blur(30px);pointer-events:none;}
.cta-grid{display:grid;grid-template-columns:minmax(0,1fr) minmax(0,1fr);gap:48px;align-items:center;position:relative;z-index:1;}
.cta-grid h2{color:#fff;font-size:28px;margin-bottom:12px;}
.cta-grid p{color:rgba(255,255,255,.76);margin:0;font-size:15px;max-width:440px;}
.cta-form{display:flex;gap:12px;flex-wrap:wrap;}
.cta-form .field{flex:1;min-width:220px;}
.form-control-brand{
  width:100%;height:46px;padding:0 16px;border-radius:var(--r-btn);border:1px solid rgba(255,255,255,.22);
  background:rgba(255,255,255,.08);color:#fff;font-size:15px;transition:all .18s ease;
}
.form-control-brand::placeholder{color:rgba(255,255,255,.5);}
.form-control-brand:focus{outline:none;border-color:var(--brand);background:rgba(255,255,255,.14);box-shadow:0 0 0 3px rgba(14,124,107,.28);}
.form-control-brand.is-error{border-color:var(--err);}
.form-hint{font-size:12px;color:rgba(255,255,255,.58);margin-top:12px;width:100%;}
.form-error{display:none;font-size:13px;color:#FF9E86;margin-top:8px;}
.form-error.is-show{display:block;}

/* ---------- FAQ ---------- */
.faq-list{display:grid;gap:12px;}
.faq-item{background:var(--surface);border:1px solid var(--line);border-radius:var(--r-card);overflow:hidden;transition:box-shadow .18s ease;}
.faq-item:hover{box-shadow:var(--sh-1);}
.faq-q{
  width:100%;display:flex;align-items:center;justify-content:space-between;gap:16px;text-align:left;
  background:none;border:none;padding:20px 24px;font-size:16px;font-weight:600;color:var(--text);cursor:pointer;
  position:relative;transition:background .18s ease;
}
.faq-q::before{content:"";position:absolute;left:0;top:0;bottom:0;width:4px;background:transparent;transition:background .18s ease;}
.faq-q .sign{flex:0 0 22px;width:22px;height:22px;position:relative;}
.faq-q .sign::before,.faq-q .sign::after{content:"";position:absolute;background:var(--brand);border-radius:2px;transition:transform .22s ease,opacity .22s ease;}
.faq-q .sign::before{left:0;top:10px;width:22px;height:2px;}
.faq-q .sign::after{left:10px;top:0;width:2px;height:22px;}
.faq-item.is-open .faq-q{background:var(--brand-50);}
.faq-item.is-open .faq-q::before{background:var(--brand);}
.faq-item.is-open .sign::after{transform:rotate(90deg);opacity:0;}
.faq-a{max-height:0;overflow:hidden;transition:max-height .28s cubic-bezier(.2,.7,.3,1);}
.faq-a p{padding:0 24px 22px;margin:0;font-size:15px;line-height:1.8;color:var(--muted);}
.faq-item.is-open .faq-a{max-height:340px;}

/* ---------- 数据条 ---------- */
.stats{background:var(--brand-50);padding:48px 0;}
.stats-grid{display:grid;grid-template-columns:repeat(4,minmax(0,1fr));gap:24px;}
.stat b{display:block;font-family:var(--mono);font-size:30px;line-height:1.15;color:var(--brand-700);font-weight:700;}
.stat span{font-size:13px;color:var(--muted);}

/* ---------- 页脚 ---------- */
.site-footer{background:var(--ink-block);color:rgba(255,255,255,.72);padding:64px 0 28px;position:relative;overflow:hidden;}
.footer-cloud{position:absolute;left:-60px;top:-40px;width:340px;opacity:.08;pointer-events:none;}
.footer-grid{display:grid;grid-template-columns:2fr 1fr 1fr 1.2fr;gap:40px;position:relative;z-index:1;}
.footer-brand{display:flex;align-items:center;gap:10px;margin-bottom:16px;}
.footer-brand .brand-mark{background:rgba(255,255,255,.08);border-color:rgba(255,255,255,.14);}
.footer-brand .brand-mark svg{stroke:#7FD6C4;}
.footer-brand b{color:#fff;font-size:17px;}
.footer-brand small{display:block;font-size:11px;color:rgba(255,255,255,.5);letter-spacing:2px;}
.site-footer p{font-size:14px;line-height:1.9;color:rgba(255,255,255,.62);margin:0 0 8px;max-width:320px;}
.footer-col h4{color:#fff;font-size:14px;font-weight:700;margin-bottom:16px;letter-spacing:.4px;}
.footer-col li{margin-bottom:2px;}
.footer-col a,.footer-col span{font-size:14px;line-height:1.9;color:rgba(255,255,255,.7);opacity:.95;}
.footer-col a:hover{color:#fff;text-decoration:underline;opacity:1;}
.footer-bottom{margin-top:48px;padding-top:22px;border-top:1px solid rgba(255,255,255,.12);display:flex;justify-content:space-between;gap:16px;flex-wrap:wrap;position:relative;z-index:1;}
.footer-bottom p{margin:0;font-size:13px;color:rgba(255,255,255,.5);max-width:none;}

/* ---------- 进场动效 ---------- */
.reveal{opacity:0;transform:translateY(12px);transition:opacity .26s cubic-bezier(.2,.7,.3,1),transform .26s cubic-bezier(.2,.7,.3,1);}
.reveal.is-in{opacity:1;transform:translateY(0);}

/* ---------- 响应式 ---------- */
@media (max-width:1199.98px){
  .wall{grid-template-columns:repeat(3,minmax(0,1fr));}
  .wall-card:first-child{grid-column:span 2;grid-row:span 2;}
  h1,.hero h1{font-size:34px;}
}
@media (max-width:991.98px){
  .nav-chips,.nav-actions .btn-brand{display:none;}
  .hamburger{display:flex;}
  .hero{padding:48px 0 56px;}
  .hero-grid{grid-template-columns:1fr;gap:32px;}
  .tl-layout{grid-template-columns:1fr;gap:32px;}
  .cta-grid{grid-template-columns:1fr;gap:28px;}
  .stats-grid{grid-template-columns:repeat(2,minmax(0,1fr));gap:24px;}
  .footer-grid{grid-template-columns:1fr 1fr;gap:32px;}
  .section{padding:64px 0;}
  h2{font-size:26px;}
}
@media (max-width:767.98px){
  .container{padding:0 16px;}
  .wall{grid-template-columns:repeat(2,minmax(0,1fr));grid-auto-rows:150px;}
  .wall-card:first-child{grid-column:span 2;grid-row:span 2;}
  .wall-card:first-child .wall-info h3{font-size:19px;}
  .countdown-inner{flex-direction:column;align-items:flex-start;gap:12px;}
  .cd-clock{width:100%;justify-content:space-between;gap:6px;}
  .cd-unit{min-width:0;}
  .cd-unit .cd-num{font-size:20px;padding:5px 6px;min-width:48px;}
  .cd-clock .sep{display:none;}
  .news-link{gap:12px;padding:20px 2px;}
  .news-date{flex:0 0 60px;font-size:12px;}
  .footer-grid{grid-template-columns:1fr;}
  .section{padding:56px 0;}
  .stats{padding:40px 0;}
}
@media (max-width:575.98px){
  h1,.hero h1{font-size:28px;}
  h2{font-size:23px;}
  h3{font-size:19px;}
  .hero-btns{flex-direction:column;}
  .hero-btns .btn-brand,.hero-btns .btn-ghost{width:100%;}
  .cta-form{flex-direction:column;}
  .cta-form .btn-brand{width:100%;}
  .wall{grid-template-columns:1fr;grid-auto-rows:180px;}
  .wall-card:first-child{grid-column:span 1;grid-row:span 1;}
  .topbar-links{display:none;}
  .stats-grid{grid-template-columns:1fr;}
}
@media (prefers-reduced-motion:reduce){
  *,*::before,*::after{animation:none !important;transition:none !important;}
  .reveal{opacity:1;transform:none;}
  html{scroll-behavior:auto;}
}

/* roulang page: article */
:root{
  --brand:#0E7C6B;
  --brand-700:#0A5F52;
  --brand-50:#E8F3F0;
  --accent:#E4572E;
  --highlight:#FFC24B;
  --bg:#F5F7F4;
  --surface:#FFFFFF;
  --ink-block:#0C1A17;
  --text:#16211E;
  --muted:#5B6B66;
  --line:#DDE5E1;
  --ok:#2E9E6B;
  --warn:#E0A100;
  --err:#C8442E;
  --r-card:16px;
  --r-img:12px;
  --r-btn:10px;
  --r-pill:999px;
  --sh-1:0 1px 2px rgba(12,26,23,.05);
  --sh-2:0 10px 26px rgba(12,26,23,.09);
  --sh-3:0 14px 34px rgba(14,124,107,.24);
  --sp-8:8px;
  --sp-16:16px;
  --sp-24:24px;
  --sp-32:32px;
  --sp-48:48px;
  --sp-64:64px;
  --sp-88:88px;
  --font:"PingFang SC","Hiragino Sans GB","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(--font);
  font-size:16px;
  line-height:1.85;
  letter-spacing:.2px;
  color:var(--text);
  background:var(--bg);
  -webkit-font-smoothing:antialiased;
}
img{max-width:100%;height:auto;display:block}
a{color:var(--brand);text-decoration:none;transition:color .18s ease,opacity .18s ease}
a:hover{color:var(--brand-700)}
button,input{font-family:inherit}
ul,ol{margin:0;padding:0;list-style:none}
h1,h2,h3,h4{margin:0;font-weight:700;color:var(--text);letter-spacing:-.2px}
p{margin:0}
:focus-visible{outline:2px solid var(--brand);outline-offset:2px;border-radius:6px}

/* ---------- container ---------- */
.container{width:100%;max-width:1200px;margin:0 auto;padding:0 24px}

/* ---------- header / nav ---------- */
.site-header{
  position:sticky;top:0;z-index:1000;
  background:rgba(255,255,255,.96);
  border-bottom:1px solid var(--line);
  transition:box-shadow .24s ease,background .24s ease;
}
.site-header.is-scrolled{box-shadow:var(--sh-2);background:rgba(255,255,255,.94)}
.nav-main{display:flex;align-items:center;gap:24px;min-height:74px}
.brand{display:flex;align-items:center;gap:12px;flex:0 0 auto;min-width:200px}
.brand-mark{
  width:42px;height:42px;border-radius:12px;background:var(--brand-50);
  display:flex;align-items:center;justify-content:center;flex:0 0 auto;
  border:1px solid rgba(14,124,107,.18);
}
.brand-mark svg{width:24px;height:24px;fill:none;stroke:var(--brand);stroke-width:1.5;stroke-linecap:round;stroke-linejoin:round}
.brand-text{display:flex;flex-direction:column;line-height:1.15}
.brand-text b{font-size:18px;font-weight:700;color:var(--text);letter-spacing:-.4px}
.brand-text small{font-size:11px;color:var(--muted);letter-spacing:2px}
.nav-chips{display:flex;align-items:center;gap:8px;flex:1 1 auto;flex-wrap:nowrap;overflow-x:auto;scrollbar-width:none}
.nav-chips::-webkit-scrollbar{display:none}
.chip{
  display:inline-flex;align-items:center;justify-content:center;
  height:40px;padding:0 18px;border-radius:var(--r-pill);
  background:var(--surface);border:1px solid var(--line);
  color:var(--text);font-size:14px;white-space:nowrap;
  transition:all .18s ease;
}
.chip:hover{border-color:var(--brand);background:var(--brand-50);color:var(--brand-700)}
.chip.is-active{background:var(--brand);border-color:var(--brand);color:#fff;box-shadow:inset 0 1px 0 rgba(255,255,255,.18)}
.nav-actions{display:flex;align-items:center;gap:12px;flex:0 0 auto;margin-left:8px}
.btn-brand{
  display:inline-flex;align-items:center;justify-content:center;
  height:44px;padding:0 24px;border-radius:var(--r-btn);
  background:var(--brand);color:#fff;font-size:15px;font-weight:600;
  border:1px solid var(--brand);white-space:nowrap;
  transition:all .18s ease;
}
.btn-brand:hover{background:var(--brand-700);border-color:var(--brand-700);color:#fff;transform:translateY(-1px);box-shadow:var(--sh-3)}
.btn-brand:active{transform:translateY(0)}
.btn-ghost{
  display:inline-flex;align-items:center;justify-content:center;gap:8px;
  height:44px;padding:0 24px;border-radius:var(--r-btn);
  background:var(--surface);color:var(--brand);font-size:15px;font-weight:600;
  border:1px solid var(--brand);
  transition:all .18s ease;
}
.btn-ghost:hover{background:var(--brand-50);color:var(--brand-700)}
.btn-link{
  display:inline-flex;align-items:center;gap:6px;color:var(--brand);font-size:14px;font-weight:600;
}
.btn-link span{transition:transform .18s ease}
.btn-link:hover span{transform:translateX(3px)}
.hamburger{
  display:none;width:44px;height:44px;border-radius:var(--r-btn);
  border:1px solid var(--line);background:var(--surface);position:relative;
}
.hamburger span,.hamburger span::before,.hamburger span::after{
  position:absolute;left:50%;width:18px;height:2px;background:var(--text);border-radius:2px;
  transform:translateX(-50%);transition:transform .2s ease;
}
.hamburger span{top:50%;margin-top:-1px}
.hamburger span::before{content:"";top:-6px;left:0;transform:none}
.hamburger span::after{content:"";top:6px;left:0;transform:none}
.mobile-drawer{display:none}

/* ---------- article hero ---------- */
.article-hero{
  position:relative;overflow:hidden;
  background:linear-gradient(180deg,#EDF5F2 0%,#FFFFFF 78%);
  border-bottom:1px solid var(--line);
  padding:40px 0 48px;
}
.article-hero::after{
  content:"";position:absolute;inset:0;pointer-events:none;
  background-image:radial-gradient(circle at 88% 22%,rgba(14,124,107,.10),transparent 44%);
}
.crumbs{display:flex;flex-wrap:wrap;align-items:center;gap:8px;font-size:13px;color:var(--muted);margin-bottom:20px}
.crumbs a{color:var(--muted)}
.crumbs a:hover{color:var(--brand)}
.crumbs .sep{opacity:.6}
.crumbs .cur{color:var(--muted);max-width:420px;overflow:hidden;text-overflow:ellipsis;white-space:nowrap}
.article-title{font-size:40px;line-height:1.25;letter-spacing:-.5px;max-width:880px;position:relative;z-index:1}
.article-meta{display:flex;flex-wrap:wrap;align-items:center;gap:10px;margin-top:20px;font-size:13px;color:var(--muted);position:relative;z-index:1}
.article-meta .dot{opacity:.5}
.meta-chip{
  display:inline-flex;align-items:center;height:24px;padding:0 12px;border-radius:var(--r-pill);
  background:var(--brand-50);color:var(--brand-700);font-size:12px;font-weight:600;
}

/* ---------- layout ---------- */
.article-layout{display:grid;grid-template-columns:minmax(0,1fr) 300px;gap:48px;align-items:start;padding:56px 0 88px}
.article-main{min-width:0}
.article-body{
  max-width:740px;font-size:16px;line-height:1.85;color:var(--text);
}
.article-body p{margin:0 0 1.2em}
.article-body h2{
  font-size:24px;line-height:1.4;margin:2em 0 .8em;padding-left:14px;border-left:4px solid var(--brand);
}
.article-body h3{font-size:20px;line-height:1.5;margin:1.6em 0 .6em;color:var(--text)}
.article-body h4{font-size:18px;margin:1.4em 0 .5em}
.article-body ul{list-style:square;padding-left:22px;margin:0 0 1.2em}
.article-body ol{list-style:decimal;padding-left:22px;margin:0 0 1.2em}
.article-body li{margin:.35em 0}
.article-body li::marker{color:var(--brand)}
.article-body blockquote{
  margin:1.4em 0;padding:16px 20px;border-left:4px solid var(--brand);
  background:var(--brand-50);border-radius:0 var(--r-img) var(--r-img) 0;color:#234039;
}
.article-body img{border-radius:var(--r-img);margin:1.4em auto}
.article-body figure{margin:1.4em 0}
.article-body figcaption{font-size:13px;color:var(--muted);text-align:center;margin-top:8px}
.article-body table{width:100%;border-collapse:collapse;margin:1.4em 0;font-size:15px}
.article-body th,.article-body td{border:1px solid var(--line);padding:10px 14px;text-align:left}
.article-body thead th{background:#EFF4F1;font-weight:600}
.article-body tbody tr:nth-child(even){background:#FAFCFA}
.article-body a{text-decoration:underline;text-decoration-thickness:1px;text-underline-offset:3px}
.article-body strong{font-weight:700}

.empty-state{
  min-height:260px;display:flex;flex-direction:column;align-items:center;justify-content:center;
  gap:16px;text-align:center;background:var(--surface);border:1px solid var(--line);
  border-radius:var(--r-card);padding:48px 24px;
}
.empty-state .ico{width:52px;height:52px;border-radius:50%;background:var(--brand-50);display:flex;align-items:center;justify-content:center}
.empty-state .ico svg{width:24px;height:24px;fill:none;stroke:var(--brand);stroke-width:1.5;stroke-linecap:round}
.empty-state h3{font-size:18px}
.empty-state p{color:var(--muted);font-size:14px}

/* ---------- sidebar ---------- */
.article-side{position:sticky;top:100px;display:flex;flex-direction:column;gap:20px}
.side-card{background:var(--surface);border:1px solid var(--line);border-radius:var(--r-card);padding:20px;box-shadow:var(--sh-1)}
.side-card h3{font-size:15px;font-weight:700;margin-bottom:14px;display:flex;align-items:center;gap:8px}
.side-card h3::before{content:"";width:4px;height:14px;border-radius:2px;background:var(--brand)}
.toc-list li{margin:0}
.toc-list a{display:block;font-size:14px;color:var(--muted);padding:6px 0 6px 12px;border-left:2px solid var(--line);transition:all .18s ease}
.toc-list a:hover,.toc-list a.is-current{color:var(--brand-700);border-left-color:var(--brand);background:var(--brand-50)}
.rel-list li+li{margin-top:14px}
.rel-list a{display:block;font-size:14px;color:var(--text);line-height:1.6}
.rel-list a:hover{color:var(--brand)}
.rel-list span{display:block;font-size:12px;color:var(--muted);margin-top:4px}
.tag-cloud{display:flex;flex-wrap:wrap;gap:8px}
.tag-chip{
  display:inline-flex;align-items:center;height:24px;padding:0 12px;border-radius:var(--r-pill);
  background:var(--bg);border:1px solid var(--line);font-size:12px;color:var(--muted);
  transition:all .18s ease;
}
.tag-chip:hover{background:var(--brand-50);border-color:var(--brand);color:var(--brand-700)}

/* ---------- article footer blocks ---------- */
.article-foot{max-width:740px;margin-top:48px}
.foot-block{margin-bottom:48px}
.foot-block > h2{font-size:20px;margin-bottom:20px}
.tag-list{display:flex;flex-wrap:wrap;gap:10px}
.pn-grid{display:grid;grid-template-columns:1fr 1fr;gap:16px}
.pn-card{
  display:block;background:var(--surface);border:1px solid var(--line);border-radius:var(--r-card);
  padding:18px 20px;transition:all .18s ease;
}
.pn-card:hover{box-shadow:var(--sh-2);transform:translateY(-2px)}
.pn-card small{display:block;font-size:12px;color:var(--muted);margin-bottom:6px}
.pn-card strong{display:block;font-size:15px;font-weight:600;color:var(--text);line-height:1.6}
.pn-card:hover strong{color:var(--brand)}
.pn-card.right{text-align:right}
.rel-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:20px}
.rel-card{
  display:flex;flex-direction:column;background:var(--surface);border:1px solid var(--line);
  border-radius:var(--r-card);overflow:hidden;transition:all .18s ease;
}
.rel-card:hover{box-shadow:var(--sh-2);transform:translateY(-2px)}
.rel-thumb{aspect-ratio:16/10;overflow:hidden;background:var(--brand-50);position:relative}
.rel-thumb img{width:100%;height:100%;object-fit:cover;border-radius:0;margin:0;transition:transform .24s ease}
.rel-card:hover .rel-thumb img{transform:scale(1.04)}
.rel-body{padding:16px 18px 20px}
.rel-body .meta-chip{margin-bottom:10px}
.rel-body h3{font-size:15px;line-height:1.6;margin-bottom:8px;display:-webkit-box;-webkit-line-clamp:2;-webkit-box-orient:vertical;overflow:hidden}
.rel-body p{font-size:13px;color:var(--muted);display:-webkit-box;-webkit-line-clamp:2;-webkit-box-orient:vertical;overflow:hidden}
.back-bar{margin-top:8px}

/* ---------- cta band ---------- */
.cta-band{background:var(--ink-block);color:#fff;position:relative;overflow:hidden}
.cta-band .cloud{position:absolute;right:-40px;top:-30px;width:320px;opacity:.10;pointer-events:none}
.cta-inner{display:grid;grid-template-columns:1fr 1fr;gap:48px;align-items:center;padding:64px 0}
.cta-inner h2{font-size:26px;color:#fff;margin-bottom:12px}
.cta-inner p{color:rgba(255,255,255,.72);font-size:15px;line-height:1.8;max-width:440px}
.cta-form{display:flex;gap:12px}
.cta-form input{
  flex:1 1 auto;height:46px;border-radius:var(--r-btn);border:1px solid rgba(255,255,255,.24);
  background:rgba(255,255,255,.06);color:#fff;padding:0 16px;font-size:15px;
}
.cta-form input::placeholder{color:rgba(255,255,255,.5)}
.cta-form input:focus{outline:none;border-color:var(--brand);box-shadow:0 0 0 3px rgba(14,124,107,.22)}
.cta-form button{
  height:46px;padding:0 24px;border-radius:var(--r-btn);border:1px solid var(--brand);
  background:var(--brand);color:#fff;font-size:15px;font-weight:600;white-space:nowrap;
  transition:all .18s ease;
}
.cta-form button:hover{background:var(--accent);border-color:var(--accent);box-shadow:var(--sh-3)}
.cta-note{margin-top:14px;font-size:12px;color:rgba(255,255,255,.5)}

/* ---------- footer ---------- */
.site-footer{background:var(--ink-block);color:#fff;position:relative;overflow:hidden;padding:64px 0 28px}
.footer-cloud{position:absolute;left:-30px;bottom:-40px;width:320px;opacity:.10;pointer-events:none}
.footer-grid{display:grid;grid-template-columns:1.6fr 1fr 1fr 1fr;gap:40px;position:relative;z-index:1}
.footer-brand{display:flex;align-items:center;gap:12px;margin-bottom:18px}
.footer-brand .brand-mark{background:rgba(255,255,255,.08);border-color:rgba(255,255,255,.14)}
.footer-brand .brand-mark svg{stroke:#7FD6C4}
.footer-brand b{display:block;font-size:17px;color:#fff;letter-spacing:-.3px}
.footer-brand small{display:block;font-size:11px;color:rgba(255,255,255,.55);letter-spacing:2px}
.footer-col p{font-size:14px;line-height:1.9;color:rgba(255,255,255,.68);margin-bottom:8px}
.footer-col h4{font-size:14px;color:#fff;margin-bottom:16px;font-weight:700}
.footer-col li{margin-bottom:10px}
.footer-col a,.footer-col span{font-size:14px;color:rgba(255,255,255,.7);line-height:1.9;transition:all .18s ease}
.footer-col a:hover{color:#fff;opacity:1;text-decoration:underline}
.footer-bottom{
  margin-top:48px;padding-top:24px;border-top:1px solid rgba(255,255,255,.12);
  display:flex;justify-content:space-between;gap:16px;flex-wrap:wrap;position:relative;z-index:1;
}
.footer-bottom p{font-size:12px;color:rgba(255,255,255,.55)}

/* ---------- reveal ---------- */
.reveal{opacity:0;transform:translateY(12px);transition:opacity .26s cubic-bezier(.2,.7,.3,1),transform .26s cubic-bezier(.2,.7,.3,1)}
.reveal.in{opacity:1;transform:none}

/* ---------- responsive ---------- */
@media (max-width:1200px){
  .container{max-width:1080px;padding:0 20px}
}
@media (max-width:991px){
  .nav-chips{display:none}
  .nav-actions .btn-brand{display:none}
  .hamburger{display:block}
  .nav-main{min-height:64px;justify-content:space-between}
  .mobile-drawer{
    display:block;position:fixed;left:0;right:0;top:64px;bottom:0;z-index:999;
    background:var(--surface);padding:20px 24px 32px;overflow-y:auto;
    transform:translateY(-12px);opacity:0;visibility:hidden;transition:all .24s ease;
    border-top:1px solid var(--line);
  }
  .mobile-drawer.is-open{transform:none;opacity:1;visibility:visible}
  .mobile-drawer ul{display:flex;flex-direction:column;gap:10px;margin-bottom:20px}
  .mobile-drawer .chip{width:100%;height:48px;border-radius:var(--r-btn);justify-content:flex-start;padding:0 18px}
  .mobile-drawer .btn-brand{width:100%}
  .article-layout{grid-template-columns:1fr;gap:40px;padding:40px 0 64px}
  .article-side{position:static;flex-direction:column}
  .article-title{font-size:32px}
  .rel-grid{grid-template-columns:repeat(2,1fr)}
  .cta-inner{grid-template-columns:1fr;gap:28px;padding:48px 0}
  .footer-grid{grid-template-columns:1fr 1fr;gap:32px}
}
@media (max-width:767px){
  body{font-size:15px}
  .article-hero{padding:28px 0 32px}
  .article-title{font-size:28px}
  .article-meta{font-size:12px}
  .crumbs .cur{max-width:200px}
  .article-body{font-size:15.5px}
  .pn-grid{grid-template-columns:1fr}
  .pn-card.right{text-align:left}
  .rel-grid{grid-template-columns:1fr}
  .cta-form{flex-direction:column}
  .cta-form button{width:100%}
  .footer-grid{grid-template-columns:1fr;gap:28px}
  .footer-bottom{flex-direction:column;gap:8px}
}
@media (max-width:520px){
  .container{padding:0 16px}
  .brand{min-width:0}
  .brand-text b{font-size:16px}
  .article-title{font-size:25px}
}
@media (prefers-reduced-motion:reduce){
  *{animation:none!important;transition:none!important}
  .reveal{opacity:1;transform:none}
}

/* roulang page: category1 */
:root{
  --brand:#0E7C6B;--brand-700:#0A5F52;--brand-50:#E8F3F0;
  --accent:#E4572E;--highlight:#FFC24B;
  --bg:#F5F7F4;--surface:#FFFFFF;--ink-block:#0C1A17;
  --text:#16211E;--muted:#5B6B66;--line:#DDE5E1;
  --success:#2E9E6B;--warn:#E0A100;--error:#C8442E;
  --radius-card:16px;--radius-img:12px;--radius-btn:10px;--radius-pill:999px;
  --shadow-1:0 1px 2px rgba(12,26,23,.05),0 2px 8px rgba(12,26,23,.04);
  --shadow-2:0 10px 24px rgba(12,26,23,.10);
  --shadow-3:0 16px 40px rgba(14,124,107,.26);
  --s1:8px;--s2:16px;--s3:24px;--s4:32px;--s5:48px;--s6:64px;--s7:88px;
}
*{box-sizing:border-box}
html{-webkit-text-size-adjust:100%;scroll-behavior:smooth}
body{
  margin:0;background:var(--bg);color:var(--text);
  font-family:"PingFang SC","Hiragino Sans GB","Microsoft YaHei",system-ui,-apple-system,"Segoe UI",sans-serif;
  font-size:16px;line-height:1.85;letter-spacing:.2px;
}
img{display:block;max-width:100%}
a{color:inherit;text-decoration:none}
button,input{font:inherit;color:inherit}
button{background:none;border:0;cursor:pointer}
ul{margin:0;padding:0;list-style:none}
h1,h2,h3,h4,p{margin:0}
h1{font-size:40px;line-height:1.25;font-weight:700;letter-spacing:-.5px}
h2{font-size:30px;line-height:1.3;font-weight:700}
h3{font-size:22px;line-height:1.4;font-weight:600}
h4{font-size:18px;line-height:1.5;font-weight:600}
p{font-size:16px;line-height:1.85}
:focus-visible{outline:2px solid var(--brand);outline-offset:2px;border-radius:8px}
.container,.container-fluid{--bs-gutter-x:0;width:100%;max-width:1200px;margin:0 auto;padding:0 24px}

/* ============ 顶栏与导航 ============ */
.site-header{
  position:sticky;top:0;z-index:60;
  background:rgba(255,255,255,.94);
  backdrop-filter:saturate(140%) blur(8px);
  border-bottom:1px solid var(--line);
  transition:box-shadow .24s ease,background .24s ease;
}
.site-header.is-scrolled{box-shadow:0 8px 24px rgba(12,26,23,.10)}
.nav-main{display:flex;align-items:center;gap:24px;min-height:72px}
.brand{display:inline-flex;align-items:center;gap:10px;flex:0 0 auto;min-height:44px}
.brand-mark{display:inline-flex;align-items:center;justify-content:center;width:36px;height:36px;border-radius:12px;background:var(--brand-50)}
.brand-mark svg{width:24px;height:24px;fill:none;stroke:var(--brand);stroke-width:1.5;stroke-linecap:round;stroke-linejoin:round}
.brand-text{display:flex;flex-direction:column;line-height:1.1}
.brand-text b{font-size:17px;font-weight:700;letter-spacing:-.2px}
.brand-text small{font-size:11px;color:var(--muted);letter-spacing:1.5px}
.nav-chips{display:flex;align-items:center;gap:8px;flex:1 1 auto;justify-content:center;overflow-x:auto;scrollbar-width:none}
.nav-chips::-webkit-scrollbar{display:none}
.chip{
  display:inline-flex;align-items:center;height:40px;padding:0 18px;white-space:nowrap;
  border:1px solid var(--line);border-radius:var(--radius-pill);background:var(--surface);
  font-size:15px;color:var(--text);transition:background .18s ease,border-color .18s ease,color .18s ease;
}
.chip:hover{border-color:var(--brand);background:var(--brand-50);color:var(--brand-700)}
.chip.is-active{background:var(--brand);border-color:var(--brand);color:#fff;box-shadow:inset 0 1px 0 rgba(255,255,255,.2)}
.nav-actions{display:flex;align-items:center;gap:12px;flex:0 0 auto;margin-left:24px}
.btn-brand{
  display:inline-flex;align-items:center;justify-content:center;gap:8px;
  height:44px;padding:0 24px;border-radius:var(--radius-btn);
  background:var(--brand);color:#fff;font-size:15px;font-weight:600;
  transition:background .18s ease,transform .18s ease,box-shadow .18s ease;
}
.btn-brand:hover{background:var(--brand-700);transform:translateY(-1px);box-shadow:var(--shadow-2)}
.btn-brand:active{transform:none;box-shadow:none}
.hamburger{display:none;width:44px;height:44px;align-items:center;justify-content:center;border:1px solid var(--line);border-radius:12px;background:#fff}
.hamburger span{position:relative;display:block;width:18px;height:2px;background:var(--text);border-radius:2px}
.hamburger span::before,.hamburger span::after{content:"";position:absolute;left:0;width:18px;height:2px;background:var(--text);border-radius:2px}
.hamburger span::before{top:-6px}
.hamburger span::after{top:6px}
.mobile-drawer{display:none}

/* ============ 分类页首屏 ============ */
.cat-hero{position:relative;overflow:hidden;padding:48px 0 44px;background:linear-gradient(180deg,#EAF4F1 0%,var(--bg) 100%)}
.cat-hero .cloud{position:absolute;right:-60px;top:-30px;width:440px;opacity:.09;pointer-events:none}
.cat-hero-inner{position:relative;display:grid;grid-template-columns:minmax(0,1fr) 280px;gap:48px;align-items:center;min-height:200px}
.cat-hero h1{margin-bottom:16px}
.cat-hero .lead{max-width:620px;color:var(--muted);font-size:16px}
.cat-hero-media{border-radius:var(--radius-card);overflow:hidden;box-shadow:var(--shadow-1);border:1px solid var(--line);background:var(--surface)}
.cat-hero-media img{width:100%;aspect-ratio:16/10;object-fit:cover}
.pill-row{display:flex;flex-wrap:wrap;gap:8px;margin-top:24px}
.pill{display:inline-flex;align-items:center;height:24px;padding:0 12px;border-radius:var(--radius-pill);background:var(--brand-50);color:var(--brand-700);font-size:12px;letter-spacing:.4px}
.pill.warm{background:#FFF3D6;color:#6B4B00}

/* ============ 面包屑 ============ */
.crumb-bar{border-bottom:1px solid var(--line);background:var(--surface)}
.crumb{display:flex;align-items:center;gap:10px;flex-wrap:wrap;min-height:52px;font-size:13px;color:var(--muted)}
.crumb a{color:var(--muted)}
.crumb a:hover{color:var(--brand);text-decoration:underline}
.crumb .sep{color:#B9C6C1}
.crumb .current{color:var(--text);font-weight:600}

/* ============ 通用板块 ============ */
.section{padding:var(--s7) 0}
.section.tight{padding-top:56px}
.section-head{display:flex;justify-content:space-between;align-items:flex-end;gap:24px;margin-bottom:40px}
.section-head p{color:var(--muted);margin-top:8px;max-width:640px}
.link-more{display:inline-flex;align-items:center;gap:8px;color:var(--brand);font-weight:600;font-size:15px;white-space:nowrap;min-height:44px}
.link-more .arrow{transition:transform .18s ease}
.link-more:hover .arrow{transform:translateX(3px)}
.surface-block{background:var(--surface);border:1px solid var(--line);border-radius:var(--radius-card);box-shadow:var(--shadow-1)}

/* ============ 图文交错行 ============ */
.feature-row{display:grid;grid-template-columns:minmax(0,1fr) minmax(0,1fr);gap:48px;align-items:center;padding:32px 0}
.feature-row + .feature-row{border-top:1px solid var(--line)}
.feature-row.reverse .feature-media{order:2}
.feature-media{position:relative;border-radius:var(--radius-card);overflow:hidden;box-shadow:var(--shadow-1)}
.feature-media img{width:100%;aspect-ratio:16/10;object-fit:cover;border-radius:var(--radius-img);transition:transform .3s ease}
.feature-media:hover img{transform:scale(1.03)}
.media-tag{position:absolute;left:16px;top:16px;display:inline-flex;align-items:center;height:24px;padding:0 12px;border-radius:var(--radius-pill);background:rgba(12,26,23,.72);color:#fff;font-size:12px;letter-spacing:.4px}
.feature-body h3{margin-bottom:16px}
.feature-body p{color:var(--muted);max-width:560px}
.feature-body p + p{margin-top:16px}
.feature-body .mini-list{margin-top:20px;display:grid;gap:10px}
.feature-body .mini-list li{display:flex;gap:10px;font-size:15px;color:var(--text)}
.feature-body .mini-list li::before{content:"";flex:0 0 auto;width:6px;height:6px;margin-top:10px;border-radius:2px;background:var(--brand)}

/* ============ 步骤 ============ */
.steps{display:grid;gap:16px}
.step{display:grid;grid-template-columns:64px minmax(0,1fr);gap:24px;align-items:flex-start;padding:24px;background:var(--surface);border:1px solid var(--line);border-radius:var(--radius-card);transition:box-shadow .18s ease,transform .18s ease}
.step:hover{box-shadow:var(--shadow-2);transform:translateY(-2px)}
.step .num{font-variant-numeric:tabular-nums;font-size:24px;font-weight:700;color:var(--brand);letter-spacing:-.5px;line-height:1.3}
.step h4{margin-bottom:6px}
.step p{color:var(--muted);font-size:15px}

/* ============ 提示清单 ============ */
.split-57{display:grid;grid-template-columns:5fr 7fr;gap:32px;align-items:stretch}
.panel-dark{background:var(--ink-block);color:#fff;border-radius:var(--radius-card);padding:40px;position:relative;overflow:hidden}
.panel-dark h3{margin-bottom:16px}
.panel-dark p{color:rgba(255,255,255,.72);font-size:15px}
.panel-dark .big-num{font-variant-numeric:tabular-nums;font-size:48px;font-weight:700;color:var(--highlight);line-height:1.1;letter-spacing:-1px}
.checklist{display:grid;gap:16px}
.check-item{display:grid;grid-template-columns:44px minmax(0,1fr);gap:16px;padding:20px 24px;background:var(--surface);border:1px solid var(--line);border-radius:var(--radius-card);transition:box-shadow .18s ease}
.check-item:hover{box-shadow:var(--shadow-2)}
.check-item .ico{display:inline-flex;align-items:center;justify-content:center;width:44px;height:44px;border-radius:12px;background:var(--brand-50)}
.check-item .ico svg{width:22px;height:22px;fill:none;stroke:var(--brand);stroke-width:1.6;stroke-linecap:round;stroke-linejoin:round}
.check-item h4{margin-bottom:4px}
.check-item p{color:var(--muted);font-size:15px}

/* ============ 数据条 ============ */
.stats{background:#EFF4F1;border-radius:var(--radius-card);padding:32px;display:grid;grid-template-columns:repeat(4,minmax(0,1fr));gap:24px}
.stat .value{font-variant-numeric:tabular-nums;font-size:30px;font-weight:700;color:var(--brand-700);letter-spacing:-.5px;line-height:1.2}
.stat .label{font-size:13px;color:var(--muted);margin-top:6px}

/* ============ FAQ ============ */
.faq-list{display:grid;gap:12px}
.faq-item{background:var(--surface);border:1px solid var(--line);border-radius:var(--radius-card);overflow:hidden;transition:background .18s ease,border-color .18s ease}
.faq-item.is-open{border-left:4px solid var(--brand);background:var(--brand-50)}
.faq-q{width:100%;display:flex;align-items:center;justify-content:space-between;gap:16px;padding:20px 24px;text-align:left;font-size:16px;font-weight:600;min-height:44px}
.faq-icon{position:relative;flex:0 0 auto;width:20px;height:20px}
.faq-icon::before,.faq-icon::after{content:"";position:absolute;left:50%;top:50%;background:var(--brand);border-radius:2px;transform:translate(-50%,-50%)}
.faq-icon::before{width:14px;height:2px}
.faq-icon::after{width:2px;height:14px;transition:transform .24s ease,opacity .24s ease}
.faq-item.is-open .faq-icon::after{transform:translate(-50%,-50%) scaleY(0);opacity:0}
.faq-a{max-height:0;overflow:hidden;padding:0 24px;color:var(--muted);font-size:15px;line-height:1.8;transition:max-height .28s ease,padding .28s ease}
.faq-item.is-open .faq-a{max-height:360px;padding:0 24px 20px}

/* ============ 深色 CTA ============ */
.cta-band{position:relative;overflow:hidden;background:var(--ink-block);color:#fff;border-radius:20px;padding:48px}
.cta-band .cloud{position:absolute;right:-40px;bottom:-60px;width:360px;opacity:.08;pointer-events:none}
.cta-inner{position:relative;display:grid;grid-template-columns:minmax(0,1fr) minmax(0,1fr);gap:40px;align-items:center}
.cta-inner h2{font-size:26px;margin-bottom:12px}
.cta-inner p{color:rgba(255,255,255,.72);font-size:15px}
.cta-form{display:flex;gap:12px}
.cta-form input{
  flex:1 1 auto;height:46px;padding:0 16px;border-radius:var(--radius-btn);
  border:1px solid rgba(255,255,255,.2);background:rgba(255,255,255,.07);color:#fff;font-size:15px;
  transition:border-color .18s ease,box-shadow .18s ease;
}
.cta-form input::placeholder{color:rgba(255,255,255,.5)}
.cta-form input:focus{outline:none;border-color:var(--brand);box-shadow:0 0 0 3px rgba(14,124,107,.28)}
.cta-form .btn-brand{background:var(--brand);flex:0 0 auto}
.cta-form .btn-brand:hover{background:var(--accent);box-shadow:var(--shadow-3)}
.cta-note{margin-top:16px;font-size:13px;color:rgba(255,255,255,.55)}

/* ============ 相关入口 ============ */
.related-grid{display:grid;grid-template-columns:repeat(3,minmax(0,1fr));gap:24px}
.related-card{display:block;background:var(--surface);border:1px solid var(--line);border-radius:var(--radius-card);padding:24px;transition:box-shadow .18s ease,transform .18s ease,border-color .18s ease}
.related-card:hover{box-shadow:var(--shadow-2);transform:translateY(-2px);border-color:#C9D9D3}
.related-card h4{margin:12px 0 8px}
.related-card p{color:var(--muted);font-size:15px}
.related-card .go{display:inline-flex;align-items:center;gap:8px;margin-top:16px;color:var(--brand);font-weight:600;font-size:15px}
.related-card .go .arrow{transition:transform .18s ease}
.related-card:hover .go .arrow{transform:translateX(3px)}

/* ============ 页脚 ============ */
.site-footer{position:relative;overflow:hidden;background:var(--ink-block);color:rgba(255,255,255,.72);padding:64px 0 24px;margin-top:var(--s7)}
.footer-cloud{position:absolute;right:-20px;top:-40px;width:360px;opacity:.08;pointer-events:none}
.footer-grid{position:relative;display:grid;grid-template-columns:1.4fr 1fr 1fr 1fr;gap:32px}
.footer-col h4{font-size:14px;font-weight:700;color:#fff;margin-bottom:16px}
.footer-col p{font-size:14px;line-height:1.9;color:rgba(255,255,255,.7)}
.footer-col p + p{margin-top:8px}
.footer-col ul{display:grid;gap:4px}
.footer-col li a,.footer-col li span{font-size:14px;line-height:1.9;color:rgba(255,255,255,.7);transition:color .18s ease,opacity .18s ease}
.footer-col li a:hover{color:#fff;text-decoration:underline}
.footer-brand{display:flex;align-items:center;gap:10px;margin-bottom:16px}
.footer-brand .brand-mark{background:rgba(255,255,255,.08)}
.footer-brand svg{width:24px;height:24px;fill:none;stroke:#7FD6C4;stroke-width:1.5;stroke-linecap:round;stroke-linejoin:round}
.footer-brand b{display:block;font-size:17px;color:#fff;line-height:1.2}
.footer-brand small{display:block;font-size:11px;color:rgba(255,255,255,.6);letter-spacing:1.5px}
.footer-bottom{position:relative;margin-top:40px;padding-top:20px;border-top:1px solid rgba(255,255,255,.12);display:flex;justify-content:space-between;gap:16px;flex-wrap:wrap}
.footer-bottom p{font-size:13px;color:rgba(255,255,255,.55)}

/* ============ 滚动动效 ============ */
.js .reveal{opacity:0;transform:translateY(12px);transition:opacity .26s cubic-bezier(.2,.7,.3,1),transform .26s cubic-bezier(.2,.7,.3,1)}
.js .reveal.is-visible{opacity:1;transform:none}

/* ============ 断点 ============ */
@media (max-width:1199.98px){
  h1{font-size:34px}
  .cat-hero-inner{grid-template-columns:minmax(0,1fr) 240px;gap:32px}
  .stats{grid-template-columns:repeat(2,minmax(0,1fr))}
}
@media (max-width:991.98px){
  .nav-chips{display:none}
  .nav-actions .btn-brand{display:none}
  .hamburger{display:inline-flex}
  .nav-main{min-height:64px}
  .mobile-drawer{display:none;position:absolute;left:0;right:0;top:100%;background:#fff;border-top:1px solid var(--line);box-shadow:0 16px 32px rgba(12,26,23,.12);padding:16px 24px 24px}
  .mobile-drawer.is-open{display:block}
  .mobile-drawer ul{display:flex;flex-direction:column;gap:8px}
  .mobile-drawer .chip{width:100%;justify-content:flex-start}
  .mobile-drawer .btn-brand{width:100%;margin-top:16px}
  .cat-hero-inner{grid-template-columns:minmax(0,1fr);gap:24px}
  .cat-hero-media{max-width:420px}
  .feature-row{grid-template-columns:minmax(0,1fr);gap:24px;padding:24px 0}
  .feature-row.reverse .feature-media{order:0}
  .split-57{grid-template-columns:minmax(0,1fr);gap:20px}
  .cta-inner{grid-template-columns:minmax(0,1fr);gap:24px}
  .cta-band{padding:32px}
  .related-grid{grid-template-columns:minmax(0,1fr);gap:16px}
  .footer-grid{grid-template-columns:repeat(2,minmax(0,1fr));gap:24px}
  .section{padding:56px 0}
  .site-footer{margin-top:56px}
}
@media (max-width:767.98px){
  .section-head{flex-direction:column;align-items:flex-start;gap:12px;margin-bottom:24px}
  .step{grid-template-columns:48px minmax(0,1fr);gap:16px;padding:20px}
  .stats{grid-template-columns:repeat(2,minmax(0,1fr));padding:24px}
  .cta-form{flex-direction:column}
  .cta-form .btn-brand{width:100%}
  .panel-dark{padding:28px}
}
@media (max-width:575.98px){
  .container,.container-fluid{padding:0 16px}
  h1{font-size:28px}
  h2{font-size:24px}
  h3{font-size:20px}
  .cat-hero{padding:32px 0 28px}
  .footer-grid{grid-template-columns:minmax(0,1fr)}
  .stats{grid-template-columns:minmax(0,1fr)}
  .check-item{grid-template-columns:36px minmax(0,1fr);gap:12px;padding:16px}
  .check-item .ico{width:36px;height:36px}
}
@media (min-width:992px){
  .mobile-drawer{display:none !important}
}
@media (prefers-reduced-motion:reduce){
  html{scroll-behavior:auto}
  .js .reveal{opacity:1;transform:none;transition:none}
  *{animation:none !important;transition:none !important}
}

/* roulang page: category2 */
:root{
  --brand:#0E7C6B;
  --brand-700:#0A5F52;
  --brand-50:#E8F3F0;
  --accent:#E4572E;
  --highlight:#FFC24B;
  --bg:#F5F7F4;
  --surface:#FFFFFF;
  --ink-block:#0C1A17;
  --text:#16211E;
  --muted:#5B6B66;
  --line:#DDE5E1;
  --ok:#2E9E6B;
  --warn:#E0A100;
  --err:#C8442E;
  --r-card:16px;
  --r-img:12px;
  --r-btn:10px;
  --r-pill:999px;
  --sh-1:0 1px 2px rgba(12,26,23,.05);
  --sh-2:0 12px 26px rgba(12,26,23,.10);
  --sh-3:0 18px 42px rgba(14,124,107,.28);
}
*,*::before,*::after{box-sizing:border-box}
html{-webkit-text-size-adjust:100%}
body{
  margin:0;
  font-family:"PingFang SC","Hiragino Sans GB","Microsoft YaHei",system-ui,-apple-system,"Segoe UI",sans-serif;
  font-size:16px;line-height:1.85;letter-spacing:.2px;
  color:var(--text);background:var(--bg);
}
img{max-width:100%;display:block;border:0}
a{color:var(--brand-700);text-decoration:none;transition:color .18s ease}
a:hover{color:var(--brand)}
button,input{font:inherit}
ul,ol{list-style:none;margin:0;padding:0}
h1,h2,h3,h4{margin:0;color:var(--text)}
h1{font-size:40px;line-height:1.25;font-weight:700;letter-spacing:-.5px}
h2{font-size:30px;line-height:1.3;font-weight:700}
h3{font-size:22px;line-height:1.4;font-weight:600}
h4{font-size:18px;line-height:1.5;font-weight:600}
p{margin:0 0 1em}
:focus-visible{outline:2px solid var(--brand);outline-offset:2px}

/* 容器 */
.container{width:100%;max-width:1200px;margin:0 auto;padding:0 24px}

/* 顶栏与导航 */
.site-header{position:sticky;top:0;z-index:80;background:rgba(255,255,255,.94);border-bottom:1px solid var(--line);transition:box-shadow .2s ease,background .2s ease}
.site-header.is-scrolled{box-shadow:0 8px 24px rgba(12,26,23,.09)}
.nav-main{display:flex;align-items:center;gap:24px;min-height:72px}
.brand{display:flex;align-items:center;gap:10px;flex:0 0 auto;min-width:198px}
.brand-mark{width:38px;height:38px;border-radius:12px;background:var(--brand-50);display:grid;place-items:center;flex:0 0 auto}
.brand-mark svg{width:22px;height:22px;fill:none;stroke:var(--brand);stroke-width:1.5;stroke-linecap:round;stroke-linejoin:round}
.brand-text{display:flex;flex-direction:column;line-height:1.15}
.brand-text b{font-size:17px;color:var(--text)}
.brand-text small{font-size:11px;color:var(--muted);letter-spacing:2px}
.nav-chips{display:flex;align-items:center;gap:8px;flex:1 1 auto;justify-content:center}
.chip{
  display:inline-flex;align-items:center;justify-content:center;
  height:40px;padding:0 18px;border-radius:var(--r-pill);
  border:1px solid var(--line);background:var(--surface);
  color:var(--text);font-size:14px;white-space:nowrap;
  transition:background .18s ease,border-color .18s ease,color .18s ease,box-shadow .18s ease;
}
.chip:hover{border-color:var(--brand);background:var(--brand-50);color:var(--brand-700)}
.chip.is-active{background:var(--brand);border-color:var(--brand);color:#fff;box-shadow:inset 0 1px 2px rgba(255,255,255,.25)}
.nav-actions{display:flex;align-items:center;gap:12px;margin-left:24px}
.btn-brand{
  display:inline-flex;align-items:center;justify-content:center;
  height:44px;padding:0 24px;border-radius:var(--r-btn);
  background:var(--brand);color:#fff;font-size:15px;border:1px solid transparent;
  transition:background .18s ease,transform .18s ease,box-shadow .18s ease;
}
.btn-brand:hover{background:var(--brand-700);color:#fff;transform:translateY(-1px);box-shadow:var(--sh-2)}
.btn-brand:active{transform:none;box-shadow:none}
.hamburger{
  display:none;width:44px;height:44px;border-radius:var(--r-btn);
  border:1px solid var(--line);background:var(--surface);
  align-items:center;justify-content:center;cursor:pointer;
}
.hamburger span{display:block;width:18px;height:2px;background:var(--text);position:relative}
.hamburger span::before,.hamburger span::after{content:"";position:absolute;left:0;width:18px;height:2px;background:var(--text)}
.hamburger span::before{top:-6px}
.hamburger span::after{top:6px}
.mobile-drawer{display:none}

/* 通用按钮 */
.btn-main{
  display:inline-flex;align-items:center;justify-content:center;gap:8px;
  height:44px;padding:0 24px;border-radius:var(--r-btn);
  background:var(--brand);color:#fff;font-size:15px;border:1px solid transparent;
  transition:background .18s ease,transform .18s ease,box-shadow .18s ease;cursor:pointer;
}
.btn-main:hover{background:var(--brand-700);color:#fff;transform:translateY(-1px);box-shadow:var(--sh-2)}
.btn-main:active{transform:none;box-shadow:none}
.btn-ghost{
  display:inline-flex;align-items:center;justify-content:center;gap:8px;
  height:44px;padding:0 24px;border-radius:var(--r-btn);
  background:var(--surface);color:var(--brand-700);font-size:15px;border:1px solid var(--brand);
  transition:background .18s ease,color .18s ease;
}
.btn-ghost:hover{background:var(--brand-50);color:var(--brand-700)}
.btn-sm{height:36px;padding:0 16px;font-size:14px;border-radius:var(--r-btn)}

/* 面包屑 */
.crumb{padding:24px 0 0;display:flex;flex-wrap:wrap;align-items:center;gap:8px;font-size:13px;color:var(--muted)}
.crumb a{color:var(--muted)}
.crumb a:hover{color:var(--brand)}
.crumb .sep{color:#B9C6C1}
.crumb .now{color:var(--muted)}

/* 分类页头图 */
.cat-hero{position:relative;overflow:hidden;background:var(--brand-50);border-bottom:1px solid var(--line);margin-top:16px;border-radius:var(--r-card)}
.cat-hero-in{position:relative;z-index:2;display:grid;grid-template-columns:1fr 250px;gap:48px;align-items:center;padding:48px 40px}
.cat-hero h1{font-size:34px;margin-bottom:12px}
.cat-hero p{color:var(--muted);margin:0;max-width:620px;font-size:15px}
.cat-hero-art{border-radius:var(--r-img);overflow:hidden;box-shadow:var(--sh-2)}
.cat-hero-art img{width:100%;aspect-ratio:4/3;object-fit:cover}
.cat-cloud{position:absolute;top:-40px;left:-30px;width:480px;opacity:.09;pointer-events:none;z-index:1}

/* 板块 */
.section{padding:88px 0 0}
.section-tight{padding:56px 0 0}
.section-head{display:flex;align-items:flex-end;justify-content:space-between;gap:24px;margin-bottom:32px;flex-wrap:wrap}
.section-head p{color:var(--muted);margin:8px 0 0;font-size:15px;max-width:680px}
.link-more{display:inline-flex;align-items:center;gap:6px;font-size:14px;color:var(--brand-700)}
.link-more .arw{transition:transform .18s ease;display:inline-block}
.link-more:hover .arw{transform:translateX(3px)}

/* 筛选标签 */
.filter-bar{display:flex;flex-wrap:wrap;gap:8px;margin-bottom:32px}
.filter-bar .chip{cursor:pointer;font-size:14px}

/* 卡片瀑布 */
.cat-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:24px}
.card{
  display:flex;flex-direction:column;background:var(--surface);
  border:1px solid var(--line);border-radius:var(--r-card);overflow:hidden;
  box-shadow:var(--sh-1);transition:transform .18s ease,box-shadow .18s ease;
}
.card:hover{transform:translateY(-3px);box-shadow:var(--sh-2)}
.card-cover{background:var(--brand-50);aspect-ratio:16/10;overflow:hidden}
.card-cover img{width:100%;height:100%;object-fit:cover;transition:transform .28s ease}
.card:hover .card-cover img{transform:scale(1.04)}
.card-body{padding:20px;display:flex;flex-direction:column;gap:10px;flex:1 1 auto}
.badge-soft{
  display:inline-flex;align-items:center;height:24px;padding:0 12px;
  border-radius:var(--r-pill);background:var(--brand-50);color:var(--brand-700);
  font-size:12px;line-height:1;width:max-content;
}
.card h3{font-size:18px;line-height:1.45}
.card p{font-size:14px;line-height:1.7;color:var(--muted);margin:0;
  display:-webkit-box;-webkit-line-clamp:2;-webkit-box-orient:vertical;overflow:hidden}
.card-link{display:inline-flex;align-items:center;gap:6px;font-size:14px;color:var(--brand-700);margin-top:auto;padding-top:6px}
.card-link .arw{transition:transform .18s ease;display:inline-block}
.card-link:hover .arw{transform:translateX(3px)}

/* 非对称栅格 */
.two-col{display:grid;grid-template-columns:5fr 7fr;gap:48px;align-items:start}
.panel{background:var(--surface);border:1px solid var(--line);border-radius:var(--r-card);padding:32px;box-shadow:var(--sh-1)}
.panel h3{margin-bottom:12px}
.check-list{display:flex;flex-direction:column;gap:16px;margin-top:20px}
.check-list li{display:flex;gap:12px;font-size:15px;color:var(--text)}
.tick{flex:0 0 auto;width:22px;height:22px;border-radius:999px;background:var(--brand-50);display:grid;place-items:center;margin-top:3px}
.tick svg{width:13px;height:13px;fill:none;stroke:var(--brand);stroke-width:2.2;stroke-linecap:round;stroke-linejoin:round}
.risk-list{display:flex;flex-direction:column;gap:0}
.risk-list li{display:flex;gap:16px;padding:18px 0;border-bottom:1px solid var(--line)}
.risk-list li:last-child{border-bottom:0;padding-bottom:0}
.risk-list li:first-child{padding-top:0}
.risk-tag{flex:0 0 auto;height:24px;padding:0 12px;border-radius:var(--r-pill);background:#FFF6E2;color:#8A6100;font-size:12px;display:inline-flex;align-items:center;line-height:1}
.risk-list strong{display:block;font-size:15px;font-weight:600;margin-bottom:4px}
.risk-list span.desc{font-size:14px;color:var(--muted);line-height:1.7}

/* 时间线 */
.timeline{position:relative;margin-left:12px;padding-left:36px;border-left:1px solid var(--line)}
.tl-item{position:relative;padding-bottom:32px}
.tl-item:last-child{padding-bottom:0}
.tl-num{
  position:absolute;left:-50px;top:2px;width:26px;height:26px;border-radius:999px;
  background:var(--brand);color:#fff;display:grid;place-items:center;
  font-size:12px;font-weight:700;letter-spacing:0;
}
.tl-item h3{font-size:18px;margin-bottom:6px}
.tl-item p{margin:0;font-size:15px;color:var(--muted);line-height:1.75;max-width:640px}

/* 深色 CTA */
.cta-band{
  position:relative;overflow:hidden;background:var(--ink-block);color:#E6EFEC;
  border-radius:20px;padding:48px;display:grid;grid-template-columns:1fr 1fr;gap:40px;align-items:center;
}
.cta-band h2{color:#fff;font-size:26px;margin-bottom:10px}
.cta-band p{color:rgba(230,239,236,.75);margin:0;font-size:15px;line-height:1.8}
.cta-cloud{position:absolute;right:-50px;bottom:-60px;width:380px;opacity:.08;pointer-events:none}
.cta-form{position:relative;z-index:2;display:flex;flex-direction:column;gap:12px}
.cta-row{display:flex;gap:12px}
.form-input{
  flex:1 1 auto;height:46px;padding:0 16px;border-radius:var(--r-btn);
  border:1px solid rgba(255,255,255,.22);background:rgba(255,255,255,.06);
  color:#fff;font-size:15px;transition:border-color .18s ease,box-shadow .18s ease;
}
.form-input::placeholder{color:rgba(230,239,236,.55)}
.form-input:focus{outline:none;border-color:#7FD6C4;box-shadow:0 0 0 3px rgba(127,214,196,.16)}
.cta-note{font-size:13px;color:rgba(230,239,236,.6);line-height:1.7}

/* FAQ */
.faq-wrap{max-width:880px}
.faq-item{background:var(--surface);border:1px solid var(--line);border-radius:14px;margin-bottom:12px;overflow:hidden;transition:background .18s ease,border-color .18s ease}
.faq-item summary{
  cursor:pointer;list-style:none;position:relative;
  padding:18px 56px 18px 20px;font-size:16px;font-weight:600;color:var(--text);
}
.faq-item summary::-webkit-details-marker{display:none}
.faq-item summary::after{
  content:"+";position:absolute;right:20px;top:50%;transform:translateY(-50%);
  font-size:22px;line-height:1;color:var(--brand);
}
.faq-item[open]{background:var(--brand-50);border-color:var(--brand);box-shadow:inset 4px 0 0 var(--brand)}
.faq-item[open] summary::after{content:"−"}
.faq-body{padding:0 24px 20px;font-size:15px;line-height:1.8;color:var(--muted)}

/* 相关入口 */
.entry-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:24px}
.entry-card{
  display:block;background:var(--surface);border:1px solid var(--line);border-radius:var(--r-card);
  padding:24px;box-shadow:var(--sh-1);transition:transform .18s ease,box-shadow .18s ease,border-color .18s ease;
}
.entry-card:hover{transform:translateY(-3px);box-shadow:var(--sh-2);border-color:var(--brand)}
.entry-card h3{font-size:17px;margin-bottom:8px;color:var(--text)}
.entry-card p{font-size:14px;color:var(--muted);margin:0}

/* 页脚 */
.site-footer{position:relative;overflow:hidden;background:var(--ink-block);color:#D8E4E0;padding:64px 0 32px;margin-top:88px}
.footer-cloud{position:absolute;top:-50px;right:-70px;width:420px;opacity:.08;pointer-events:none}
.footer-grid{position:relative;z-index:2;display:grid;grid-template-columns:1.5fr 1fr 1fr 1fr;gap:32px}
.footer-brand{display:flex;align-items:center;gap:10px;margin-bottom:16px}
.footer-brand .brand-mark{background:rgba(127,214,196,.12)}
.footer-brand .brand-mark svg{stroke:#7FD6C4}
.footer-brand b{color:#fff;font-size:17px;display:block;line-height:1.2}
.footer-brand small{color:rgba(216,228,224,.6);font-size:11px;letter-spacing:2px}
.footer-col h4{color:#fff;font-size:14px;margin-bottom:14px;font-weight:700}
.footer-col p{font-size:14px;color:rgba(216,228,224,.7);line-height:1.9;margin:0 0 8px}
.footer-col ul li{margin-bottom:8px}
.footer-col ul li a,.footer-col ul li span{font-size:14px;color:rgba(216,228,224,.7);line-height:1.9}
.footer-col ul li a:hover{color:#fff;text-decoration:underline}
.footer-bottom{position:relative;z-index:2;border-top:1px solid rgba(255,255,255,.12);margin-top:40px;padding-top:20px}
.footer-bottom p{font-size:13px;color:rgba(216,228,224,.6);margin:0 0 4px;line-height:1.8}

/* 滚动淡入 */
.reveal{opacity:0;transform:translateY(12px);transition:opacity .26s cubic-bezier(.2,.7,.3,1),transform .26s cubic-bezier(.2,.7,.3,1)}
.reveal.is-visible{opacity:1;transform:none}

/* 响应式 */
@media (max-width:1199px){
  .cat-grid{grid-template-columns:repeat(3,1fr)}
}
@media (max-width:991px){
  .nav-chips{display:none}
  .nav-actions .btn-brand{display:none}
  .hamburger{display:inline-flex}
  .nav-main{min-height:64px}
  .nav-actions{margin-left:auto}
  .mobile-drawer{
    display:none;flex-direction:column;gap:12px;
    padding:12px 0 20px;border-top:1px solid var(--line);
  }
  .mobile-drawer.is-open{display:flex}
  .mobile-drawer ul{display:flex;flex-direction:column;gap:8px}
  .mobile-drawer .chip{width:100%;height:46px}
  .mobile-drawer .btn-brand{width:100%}
  .cat-hero-in{grid-template-columns:1fr;gap:24px;padding:36px 24px}
  .cat-hero h1{font-size:28px}
  .two-col{grid-template-columns:1fr;gap:32px}
  .cat-grid{grid-template-columns:repeat(2,1fr)}
  .cta-band{grid-template-columns:1fr;padding:32px}
  .entry-grid{grid-template-columns:1fr 1fr}
  .footer-grid{grid-template-columns:1fr 1fr}
}
@media (max-width:767px){
  .container{padding:0 16px}
  .section{padding:56px 0 0}
  .section-tight{padding:40px 0 0}
  h1{font-size:28px}
  h2{font-size:24px}
  .cat-grid{grid-template-columns:1fr}
  .entry-grid{grid-template-columns:1fr}
  .footer-grid{grid-template-columns:1fr}
  .site-footer{margin-top:56px}
  .cta-form .cta-row{flex-direction:column}
  .cta-form .btn-main{width:100%}
  .panel{padding:24px}
}
@media (prefers-reduced-motion:reduce){
  .reveal{opacity:1;transform:none;transition:none}
  *{animation:none !important}
}

/* roulang page: category3 */
:root{
  --brand:#0E7C6B;
  --brand-700:#0A5F52;
  --brand-50:#E8F3F0;
  --accent:#E4572E;
  --highlight:#FFC24B;
  --bg:#F5F7F4;
  --surface:#FFFFFF;
  --ink-block:#0C1A17;
  --text:#16211E;
  --muted:#5B6B66;
  --line:#DDE5E1;
  --success:#2E9E6B;
  --warn:#E0A100;
  --error:#C8442E;
  --r-card:16px;
  --r-img:12px;
  --r-btn:10px;
  --r-pill:999px;
  --sh-1:0 1px 2px rgba(12,26,23,.05);
  --sh-2:0 10px 24px rgba(12,26,23,.09);
  --sh-3:0 18px 44px rgba(14,124,107,.24);
  --s-8:8px;--s-16:16px;--s-24:24px;--s-32:32px;--s-48:48px;--s-64:64px;--s-88:88px;
  --font:"PingFang SC","Hiragino Sans GB","Microsoft YaHei","Helvetica Neue",Arial,sans-serif;
}
*,*::before,*::after{box-sizing:border-box;}
html{-webkit-text-size-adjust:100%;scroll-behavior:smooth;}
body{
  margin:0;
  font-family:var(--font);
  font-size:16px;
  line-height:1.85;
  letter-spacing:.2px;
  color:var(--text);
  background:var(--bg);
  -webkit-font-smoothing:antialiased;
}
img{max-width:100%;display:block;border-radius:var(--r-img);}
a{color:var(--brand);text-decoration:none;transition:color .18s ease,opacity .18s ease;}
a:hover{color:var(--brand-700);}
h1,h2,h3,h4{margin:0;color:var(--text);font-weight:700;letter-spacing:-.2px;}
h1{font-size:40px;line-height:1.25;letter-spacing:-.5px;}
h2{font-size:30px;line-height:1.3;}
h3{font-size:22px;line-height:1.4;font-weight:600;}
h4{font-size:18px;line-height:1.5;font-weight:600;}
p{margin:0 0 1.2em;}
ul{margin:0;padding:0;list-style:none;}
button{font-family:inherit;}
:focus-visible{outline:2px solid var(--brand);outline-offset:2px;border-radius:6px;}
.container{width:100%;max-width:1200px;margin:0 auto;padding:0 24px;}

/* ---------- 顶栏 ---------- */
.topbar{
  height:36px;
  background:#0A1411;
  color:rgba(255,255,255,.78);
  font-size:13px;
  overflow:hidden;
}
.topbar .container{height:36px;display:flex;align-items:center;justify-content:space-between;gap:16px;}
.topbar-notice{display:flex;align-items:center;gap:8px;white-space:nowrap;overflow:hidden;text-overflow:ellipsis;}
.topbar-dot{width:6px;height:6px;border-radius:50%;background:var(--highlight);flex:0 0 auto;}
.topbar-links{display:flex;gap:20px;flex:0 0 auto;}
.topbar-links a{color:rgba(255,255,255,.78);font-size:13px;}
.topbar-links a:hover{color:#fff;}

/* ---------- 主导航 ---------- */
.site-header{
  position:sticky;
  top:0;
  z-index:1000;
  background:rgba(255,255,255,.94);
  border-bottom:1px solid var(--line);
  backdrop-filter:saturate(150%) blur(6px);
  transition:box-shadow .22s ease,background .22s ease;
}
.site-header.is-scrolled{box-shadow:0 8px 24px rgba(12,26,23,.09);background:rgba(255,255,255,.94);}
.nav-main{display:flex;align-items:center;gap:24px;height:76px;}
.brand{display:flex;align-items:center;gap:10px;flex:0 0 auto;color:var(--text);}
.brand:hover{color:var(--text);}
.brand-mark{width:36px;height:36px;border-radius:12px;background:var(--brand-50);display:inline-flex;align-items:center;justify-content:center;flex:0 0 auto;}
.brand-mark svg{width:22px;height:22px;fill:none;stroke:var(--brand);stroke-width:1.5;stroke-linecap:round;stroke-linejoin:round;}
.brand-text{display:flex;flex-direction:column;line-height:1.15;}
.brand-text b{font-size:17px;font-weight:700;letter-spacing:-.2px;}
.brand-text small{font-size:11px;color:var(--muted);letter-spacing:2px;}
.nav-chips{display:flex;align-items:center;gap:8px;flex:1 1 auto;margin:0;overflow-x:auto;scrollbar-width:none;}
.nav-chips::-webkit-scrollbar{display:none;}
.chip{
  display:inline-flex;align-items:center;justify-content:center;
  height:40px;padding:0 18px;border-radius:var(--r-pill);
  border:1px solid var(--line);background:var(--surface);
  color:var(--text);font-size:14px;white-space:nowrap;
  transition:border-color .18s ease,background .18s ease,color .18s ease,box-shadow .18s ease;
}
.chip:hover{border-color:var(--brand);background:var(--brand-50);color:var(--brand-700);}
.chip.is-active{background:var(--brand);border-color:var(--brand);color:#fff;box-shadow:inset 0 1px 2px rgba(0,0,0,.12);}
.chip.is-active:hover{background:var(--brand-700);border-color:var(--brand-700);color:#fff;}
.nav-actions{display:flex;align-items:center;gap:12px;flex:0 0 auto;margin-left:24px;}
.btn-brand{
  display:inline-flex;align-items:center;justify-content:center;
  height:44px;padding:0 24px;border-radius:var(--r-btn);
  background:var(--brand);color:#fff;font-size:15px;border:1px solid var(--brand);
  transition:background .18s ease,transform .18s ease,box-shadow .18s ease;
}
.btn-brand:hover{background:var(--accent);border-color:var(--accent);color:#fff;transform:translateY(-1px);box-shadow:var(--sh-2);}
.btn-brand:active{transform:none;box-shadow:none;}
.btn-ghost{
  display:inline-flex;align-items:center;justify-content:center;
  height:44px;padding:0 24px;border-radius:var(--r-btn);
  background:var(--surface);color:var(--brand);border:1px solid var(--brand);font-size:15px;
  transition:background .18s ease,transform .18s ease,box-shadow .18s ease;
}
.btn-ghost:hover{background:var(--brand-50);color:var(--brand-700);transform:translateY(-1px);box-shadow:var(--sh-2);}
.btn-link-arrow{display:inline-flex;align-items:center;gap:6px;color:var(--brand);font-size:14px;}
.btn-link-arrow span.arrow{transition:transform .18s ease;}
.btn-link-arrow:hover span.arrow{transform:translateX(3px);}
.hamburger{
  display:none;width:44px;height:44px;border-radius:var(--r-btn);
  border:1px solid var(--line);background:var(--surface);position:relative;
}
.hamburger span,.hamburger span::before,.hamburger span::after{
  position:absolute;left:50%;transform:translateX(-50%);
  width:18px;height:2px;background:var(--text);border-radius:2px;content:"";
}
.hamburger span{top:50%;margin-top:-1px;}
.hamburger span::before{top:-6px;}
.hamburger span::after{top:6px;}
.mobile-drawer{display:none;}

/* ---------- 分类小 Hero ---------- */
.cat-hero{
  position:relative;
  background:linear-gradient(180deg,var(--brand-50) 0%,#fff 100%);
  border-bottom:1px solid var(--line);
  overflow:hidden;
}
.cat-hero .cloud-line{
  position:absolute;right:-40px;top:-30px;width:420px;height:260px;opacity:.1;pointer-events:none;
}
.cat-hero .cloud-line g{stroke:var(--brand);stroke-width:1.5;fill:none;stroke-linecap:round;}
.cat-hero-inner{
  position:relative;z-index:1;
  min-height:200px;
  display:flex;align-items:center;justify-content:space-between;gap:32px;
  padding:32px 0;
}
.cat-hero-text{max-width:720px;}
.cat-hero h1{font-size:34px;line-height:1.3;margin-bottom:10px;}
.cat-hero p{color:var(--muted);font-size:15px;margin:0;}
.cat-hero-media{flex:0 0 auto;width:210px;border-radius:var(--r-card);overflow:hidden;box-shadow:var(--sh-1);}
.cat-hero-media img{width:100%;height:120px;object-fit:cover;border-radius:0;}
.breadcrumb{display:flex;align-items:center;gap:8px;font-size:13px;color:var(--muted);margin-bottom:14px;}
.breadcrumb a{color:var(--muted);}
.breadcrumb a:hover{color:var(--brand);}
.breadcrumb .sep{color:var(--line);}
.breadcrumb .current{color:var(--muted);}

/* ---------- 通用板块 ---------- */
.section{padding:88px 0;}
.section-tight{padding:64px 0;}
.section-head{display:flex;align-items:flex-end;justify-content:space-between;gap:24px;margin-bottom:var(--s-32);}
.section-head p{color:var(--muted);font-size:15px;margin:8px 0 0;}
.eyebrow{
  display:inline-flex;align-items:center;gap:8px;
  font-size:13px;color:var(--brand);letter-spacing:1px;margin-bottom:12px;
}
.eyebrow::before{content:"";width:20px;height:1px;background:var(--brand);display:inline-block;}

/* ---------- 分类页 3 版式：左锚点 + 右分组清单 ---------- */
.doc-layout{display:grid;grid-template-columns:264px minmax(0,1fr);gap:48px;align-items:start;}
.doc-anchor{
  position:sticky;top:112px;
  background:var(--surface);
  border:1px solid var(--line);
  border-radius:var(--r-card);
  padding:24px;
  box-shadow:var(--sh-1);
}
.doc-anchor h2{font-size:16px;font-weight:700;margin-bottom:16px;}
.doc-anchor ul{display:flex;flex-direction:column;gap:2px;}
.doc-anchor a{
  display:flex;align-items:center;justify-content:space-between;gap:12px;
  min-height:44px;padding:0 12px;border-radius:10px;
  font-size:14px;color:var(--text);
  transition:background .18s ease,color .18s ease,padding-left .18s ease;
}
.doc-anchor a::after{content:"›";color:var(--line);font-size:16px;}
.doc-anchor a:hover{background:var(--brand-50);color:var(--brand-700);padding-left:16px;}
.doc-anchor a:hover::after{color:var(--brand);}
.doc-anchor .anchor-note{margin-top:16px;padding-top:16px;border-top:1px solid var(--line);font-size:13px;color:var(--muted);line-height:1.75;}

.doc-groups{display:flex;flex-direction:column;gap:48px;}
.doc-group{
  background:var(--surface);
  border:1px solid var(--line);
  border-radius:var(--r-card);
  overflow:hidden;
  box-shadow:var(--sh-1);
}
.doc-group-head{
  display:flex;align-items:center;justify-content:space-between;gap:16px;
  padding:20px 24px;border-bottom:1px solid var(--line);background:#FBFCFB;
}
.doc-group-head h3{font-size:18px;display:flex;align-items:center;gap:10px;}
.doc-group-head h3 .num{
  display:inline-flex;align-items:center;justify-content:center;
  width:26px;height:26px;border-radius:50%;background:var(--brand-50);
  color:var(--brand);font-size:13px;font-weight:700;font-variant-numeric:tabular-nums;
}
.doc-group-head .count{font-size:13px;color:var(--muted);}
.doc-rows{display:flex;flex-direction:column;}
.doc-row{
  display:grid;grid-template-columns:minmax(0,1fr) minmax(0,1.1fr);
  gap:24px;align-items:center;
  padding:18px 24px;border-bottom:1px solid var(--line);
  transition:background .18s ease,padding-left .18s ease;
}
.doc-row:last-child{border-bottom:0;}
.doc-row:hover{background:var(--brand-50);padding-left:28px;}
.doc-row .row-title{display:flex;align-items:center;gap:10px;font-size:15px;font-weight:600;color:var(--text);}
.doc-row .row-title .dot{width:6px;height:6px;border-radius:50%;background:var(--brand);flex:0 0 auto;}
.doc-row:hover .row-title{color:var(--brand-700);}
.doc-row .row-desc{font-size:14px;color:var(--muted);line-height:1.7;}

/* ---------- 深色 CTA 条 ---------- */
.cta-band{
  background:var(--ink-block);
  color:#fff;
  border-radius:var(--r-card);
  padding:48px;
  display:grid;grid-template-columns:minmax(0,1fr) minmax(0,1fr);
  gap:40px;align-items:center;
  position:relative;overflow:hidden;
}
.cta-band h2{color:#fff;font-size:26px;margin-bottom:12px;}
.cta-band p{color:rgba(255,255,255,.72);font-size:15px;margin:0;max-width:420px;}
.cta-band .cloud-line{position:absolute;right:-30px;bottom:-60px;width:340px;height:220px;opacity:.08;}
.cta-band .cloud-line g{stroke:#7FD6C4;stroke-width:2;fill:none;}
.cta-form{position:relative;z-index:1;display:flex;flex-direction:column;gap:12px;}
.cta-form .field-row{display:flex;gap:12px;}
.cta-form input{
  flex:1 1 auto;height:46px;padding:0 16px;border-radius:var(--r-btn);
  border:1px solid rgba(255,255,255,.2);background:rgba(255,255,255,.06);
  color:#fff;font-size:15px;transition:border-color .18s ease,box-shadow .18s ease,background .18s ease;
}
.cta-form input::placeholder{color:rgba(255,255,255,.45);}
.cta-form input:focus{
  outline:none;border-color:var(--brand);
  background:rgba(255,255,255,.1);
  box-shadow:0 0 0 3px rgba(14,124,107,.28);
}
.cta-form .btn-brand{background:var(--brand);border-color:var(--brand);width:100%;}
.cta-form .btn-brand:hover{background:var(--accent);border-color:var(--accent);box-shadow:var(--sh-3);}
.cta-form .policy{font-size:13px;color:rgba(255,255,255,.5);margin:0;}

/* ---------- FAQ ---------- */
.faq-list{display:flex;flex-direction:column;gap:12px;max-width:900px;}
.faq-item{
  background:var(--surface);border:1px solid var(--line);border-radius:var(--r-card);
  overflow:hidden;transition:box-shadow .18s ease,border-color .18s ease;
}
.faq-item:hover{box-shadow:var(--sh-1);}
.faq-item.is-open{border-color:var(--brand);box-shadow:var(--sh-1);}
.faq-q{
  width:100%;display:flex;align-items:center;justify-content:space-between;gap:16px;
  padding:20px 24px;background:transparent;border:0;text-align:left;
  font-size:16px;font-weight:600;color:var(--text);cursor:pointer;min-height:44px;
  transition:background .18s ease;
}
.faq-q:hover{background:#FBFCFB;}
.faq-item.is-open .faq-q{background:var(--brand-50);border-left:4px solid var(--brand);padding-left:20px;}
.faq-icon{position:relative;width:18px;height:18px;flex:0 0 auto;}
.faq-icon::before,.faq-icon::after{
  content:"";position:absolute;left:50%;top:50%;background:var(--brand);border-radius:2px;
  transform:translate(-50%,-50%);transition:transform .2s ease,opacity .2s ease;
}
.faq-icon::before{width:14px;height:2px;}
.faq-icon::after{width:2px;height:14px;}
.faq-item.is-open .faq-icon::after{transform:translate(-50%,-50%) rotate(90deg);opacity:0;}
.faq-a{max-height:0;overflow:hidden;transition:max-height .28s cubic-bezier(.2,.7,.3,1);}
.faq-a-inner{padding:16px 24px 22px;font-size:15px;line-height:1.8;color:var(--muted);}
.faq-item.is-open .faq-a{max-height:320px;}

/* ---------- 相关入口 ---------- */
.related-grid{display:grid;grid-template-columns:repeat(3,minmax(0,1fr));gap:24px;}
.related-card{
  background:var(--surface);border:1px solid var(--line);border-radius:var(--r-card);
  overflow:hidden;display:flex;flex-direction:column;
  transition:transform .18s ease,box-shadow .18s ease,border-color .18s ease;
}
.related-card:hover{transform:translateY(-3px);box-shadow:var(--sh-2);border-color:#CFE0DB;}
.related-card img{width:100%;height:150px;object-fit:cover;border-radius:0;}
.related-body{padding:20px 22px 22px;display:flex;flex-direction:column;gap:8px;flex:1 1 auto;}
.related-body h3{font-size:17px;}
.related-body p{font-size:14px;color:var(--muted);margin:0;line-height:1.75;}
.related-body .btn-link-arrow{margin-top:auto;font-size:14px;}
.badge-soft{
  display:inline-flex;align-items:center;height:24px;padding:0 12px;border-radius:var(--r-pill);
  background:var(--brand-50);color:var(--brand);font-size:12px;line-height:1;width:fit-content;
}

/* ---------- 页脚 ---------- */
.site-footer{position:relative;background:var(--ink-block);color:rgba(255,255,255,.72);padding:64px 0 32px;overflow:hidden;}
.footer-cloud{position:absolute;right:-40px;top:20px;width:320px;height:200px;opacity:.08;pointer-events:none;}
.footer-grid{position:relative;z-index:1;display:grid;grid-template-columns:1.4fr 1fr 1fr 1fr;gap:40px;}
.footer-brand{display:flex;align-items:center;gap:10px;margin-bottom:16px;}
.footer-brand .brand-mark{background:rgba(255,255,255,.08);}
.footer-brand .brand-mark svg{stroke:#7FD6C4;}
.footer-brand b{color:#fff;font-size:17px;display:block;line-height:1.2;}
.footer-brand small{color:rgba(255,255,255,.5);font-size:11px;letter-spacing:2px;}
.footer-col p{font-size:14px;line-height:1.8;color:rgba(255,255,255,.62);margin:0 0 8px;}
.footer-col h4{color:#fff;font-size:14px;font-weight:700;margin-bottom:16px;}
.footer-col ul{display:flex;flex-direction:column;gap:8px;}
.footer-col a,.footer-col span{color:rgba(255,255,255,.7);font-size:14px;line-height:1.9;}
.footer-col a:hover{color:#fff;text-decoration:underline;}
.footer-bottom{
  position:relative;z-index:1;margin-top:48px;padding-top:24px;
  border-top:1px solid rgba(255,255,255,.1);
  display:flex;flex-direction:column;gap:6px;
}
.footer-bottom p{margin:0;font-size:13px;color:rgba(255,255,255,.5);}

/* ---------- 动效 ---------- */
.reveal{opacity:0;transform:translateY(12px);transition:opacity .26s cubic-bezier(.2,.7,.3,1),transform .26s cubic-bezier(.2,.7,.3,1);}
.reveal.is-in{opacity:1;transform:none;}

/* ---------- 响应式 ---------- */
@media (max-width:1199.98px){
  .doc-layout{grid-template-columns:228px minmax(0,1fr);gap:32px;}
  .related-grid{grid-template-columns:repeat(3,minmax(0,1fr));gap:20px;}
}
@media (max-width:991.98px){
  .nav-chips{display:none;}
  .nav-actions .btn-brand{display:none;}
  .hamburger{display:inline-flex;}
  .nav-main{height:64px;justify-content:space-between;}
  .mobile-drawer{
    display:block;max-height:0;overflow:hidden;
    transition:max-height .3s cubic-bezier(.2,.7,.3,1);
    border-top:1px solid transparent;
  }
  .mobile-drawer.is-open{max-height:520px;border-top-color:var(--line);}
  .mobile-drawer ul{display:flex;flex-direction:column;gap:8px;padding:16px 0;}
  .mobile-drawer .chip{width:100%;justify-content:flex-start;height:44px;}
  .mobile-drawer .btn-brand{width:100%;margin-bottom:20px;}
  .cat-hero h1{font-size:28px;}
  .cat-hero-media{display:none;}
  .section{padding:56px 0;}
  .doc-layout{grid-template-columns:minmax(0,1fr);gap:32px;}
  .doc-anchor{position:static;}
  .doc-anchor ul{flex-direction:row;flex-wrap:wrap;gap:8px;}
  .doc-anchor a{min-height:40px;padding:0 14px;border:1px solid var(--line);border-radius:var(--r-pill);}
  .doc-anchor a::after{display:none;}
  .doc-anchor a:hover{padding-left:14px;}
  .cta-band{grid-template-columns:minmax(0,1fr);padding:32px;gap:24px;}
  .related-grid{grid-template-columns:repeat(2,minmax(0,1fr));}
  .footer-grid{grid-template-columns:repeat(2,minmax(0,1fr));gap:32px;}
}
@media (max-width:767.98px){
  .doc-row{grid-template-columns:minmax(0,1fr);gap:6px;padding:16px 18px;}
  .doc-row:hover{padding-left:22px;}
  .doc-group-head{padding:16px 18px;flex-direction:column;align-items:flex-start;gap:6px;}
}
@media (max-width:575.98px){
  .container{padding:0 16px;}
  body{font-size:15px;}
  h1{font-size:26px;}
  h2{font-size:23px;}
  .cat-hero h1{font-size:24px;}
  .cat-hero-inner{padding:24px 0;}
  .topbar-links{display:none;}
  .section{padding:48px 0;}
  .cta-band{padding:24px;}
  .related-grid{grid-template-columns:minmax(0,1fr);}
  .footer-grid{grid-template-columns:minmax(0,1fr);}
  .section-head{flex-direction:column;align-items:flex-start;gap:12px;}
}
@media (prefers-reduced-motion:reduce){
  *{animation:none !important;transition:none !important;}
  .reveal{opacity:1;transform:none;}
  html{scroll-behavior:auto;}
}