/* roulang page: index */
:root{
  --ink:#0E1113;
  --accent:#E4572E;
  --accent-dark:#c9481f;
  --muted:#5B6663;
  --soft:#8A9490;
  --paper:#FAF9F6;
  --warm:#F1EFEA;
  --deep:#10201B;
  --line:#E3DFD7;
  --div:#EDEAE3;
  --white:#ffffff;
  --r-card:14px;
  --r-img:12px;
  --r-btn:999px;
  --r-input:10px;
  --sh-1:0 1px 2px rgba(14,17,19,.04);
  --sh-2:0 12px 32px rgba(14,17,19,.10);
  --sp:8px;
}
*,*::before,*::after{box-sizing:border-box}
html{-webkit-text-size-adjust:100%;scroll-behavior:smooth}
body{
  margin:0;
  font-family:-apple-system,BlinkMacSystemFont,"Segoe UI","PingFang SC","Hiragino Sans GB","Microsoft YaHei",sans-serif;
  font-size:16.5px;
  line-height:1.8;
  color:var(--ink);
  background:var(--paper);
  -webkit-font-smoothing:antialiased;
  text-rendering:optimizeLegibility;
}
img{max-width:100%;display:block;height:auto;border-radius:var(--r-img)}
a{color:inherit;text-decoration:none;transition:color .2s ease}
a:hover{color:var(--accent)}
h1,h2,h3,h4{margin:0;font-weight:700;letter-spacing:-0.02em;line-height:1.2}
p{margin:0}
ul,ol{margin:0;padding:0;list-style:none}
button,input{font:inherit;color:inherit}
button{cursor:pointer;background:none;border:none}
:focus-visible{outline:2px solid var(--accent);outline-offset:2px;border-radius:4px}
.container{width:100%;max-width:1200px;margin:0 auto;padding:0 32px}
.section{padding:96px 0}
.section--warm{background:var(--warm)}
.section--tight{padding:72px 0}
.num{font-variant-numeric:tabular-nums;font-feature-settings:"tnum"}

/* ---------- 导航 ---------- */
.site-header{
  position:sticky;top:0;z-index:80;background:rgba(250,249,246,.96);
  backdrop-filter:saturate(150%) blur(8px);border-bottom:1px solid transparent;
  transition:box-shadow .3s ease,border-color .3s ease;
}
.site-header.is-scrolled{border-bottom-color:var(--line);box-shadow:0 1px 12px rgba(14,17,19,.06)}
.header-top{display:flex;align-items:center;gap:24px;height:76px}
.brand{display:flex;align-items:center;gap:12px;flex-shrink:0}
.brand-mark{
  width:40px;height:40px;flex:0 0 40px;border-radius:12px;background:var(--ink);color:#fff;
  display:flex;align-items:center;justify-content:center;font-size:18px;font-weight:700;
}
.brand-text{display:flex;flex-direction:column;line-height:1.25}
.brand-text strong{font-size:16.5px;font-weight:700;letter-spacing:-0.01em;white-space:nowrap}
.brand-text em{font-style:normal;font-size:12px;color:var(--soft);letter-spacing:.06em}
.search{
  flex:1;max-width:420px;margin-left:auto;display:flex;align-items:center;gap:8px;
  background:#fff;border:1px solid var(--line);border-radius:var(--r-input);
  padding:0 6px 0 14px;height:44px;transition:border-color .2s ease,box-shadow .2s ease;
}
.search:focus-within{border-color:var(--accent);box-shadow:0 0 0 3px rgba(228,87,46,.12)}
.search i{color:var(--soft);font-size:14px}
.search input{flex:1;border:none;background:none;height:100%;min-width:0;font-size:14.5px;outline:none}
.search input::placeholder{color:var(--soft)}
.search button{
  height:34px;padding:0 16px;border-radius:8px;background:var(--ink);color:#fff;
  font-size:13.5px;font-weight:600;transition:background .2s ease;
}
.search button:hover{background:var(--accent)}
.header-cta{height:44px;padding:0 22px;font-size:14.5px}
.nav-toggle{
  display:none;width:44px;height:44px;border:1px solid var(--line);border-radius:10px;
  align-items:center;justify-content:center;background:#fff;
}
.nav-toggle span{display:block;width:18px;height:1.5px;background:var(--ink);position:relative}
.nav-toggle span::before,.nav-toggle span::after{
  content:"";position:absolute;left:0;width:18px;height:1.5px;background:var(--ink);
}
.nav-toggle span::before{top:-6px}
.nav-toggle span::after{top:6px}
.tabs-wrap{position:relative;border-top:1px solid var(--div)}
.tabs-wrap::after{
  content:"";position:absolute;right:0;top:0;bottom:0;width:56px;pointer-events:none;
  background:linear-gradient(90deg,rgba(250,249,246,0),rgba(250,249,246,.95));
}
.tabs{display:flex;align-items:center;gap:6px;height:52px;overflow-x:auto;scrollbar-width:none}
.tabs::-webkit-scrollbar{display:none}
.tab{
  flex:0 0 auto;display:inline-flex;align-items:center;height:34px;padding:0 16px;border-radius:999px;
  font-size:14.5px;font-weight:500;color:var(--muted);white-space:nowrap;
  border:1px solid transparent;transition:all .2s ease;
}
.tab:hover{color:var(--ink);background:var(--warm)}
.tab.is-active{background:rgba(228,87,46,.10);color:var(--accent);border-color:rgba(228,87,46,.22);font-weight:600}
.mobile-drawer{
  display:none;position:fixed;left:0;right:0;top:0;z-index:90;background:var(--paper);
  border-bottom:1px solid var(--line);box-shadow:var(--sh-2);padding:20px 20px 26px;
  transform:translateY(-102%);transition:transform .32s ease;
}
.mobile-drawer.is-open{transform:translateY(0)}
.mobile-drawer .drawer-head{display:flex;align-items:center;justify-content:space-between;margin-bottom:16px}
.drawer-close{width:40px;height:40px;border:1px solid var(--line);border-radius:10px;font-size:16px}
.drawer-links{display:grid;gap:4px;margin-bottom:16px}
.drawer-links a{
  display:flex;align-items:center;justify-content:space-between;min-height:48px;padding:0 14px;
  border-radius:10px;font-size:15.5px;font-weight:500;border:1px solid var(--line);background:#fff;
}
.drawer-links a.is-active{color:var(--accent);border-color:rgba(228,87,46,.3);background:rgba(228,87,46,.06)}
.drawer-search{display:flex;gap:8px;margin-bottom:16px}
.drawer-search input{flex:1;height:46px;border:1px solid var(--line);border-radius:var(--r-input);padding:0 14px;background:#fff;outline:none}
.drawer-search input:focus{border-color:var(--accent)}

/* ---------- 按钮 / 标签 ---------- */
.btn{
  display:inline-flex;align-items:center;justify-content:center;gap:8px;min-height:46px;padding:0 26px;
  border-radius:var(--r-btn);font-size:15px;font-weight:600;border:1px solid transparent;
  transition:all .25s ease;white-space:nowrap;
}
.btn-primary{background:var(--accent);color:#fff}
.btn-primary:hover{background:var(--accent-dark);color:#fff;transform:translateY(-1px);box-shadow:0 12px 26px rgba(228,87,46,.28)}
.btn-primary:active{transform:translateY(0);box-shadow:0 4px 12px rgba(228,87,46,.22)}
.btn-ghost{border-color:var(--ink);color:var(--ink);background:transparent}
.btn-ghost:hover{background:var(--ink);color:#fff}
.btn-text{display:inline-flex;align-items:center;gap:6px;font-size:14px;font-weight:600;color:var(--accent)}
.btn-text i{transition:transform .25s ease}
.btn-text:hover i{transform:translateX(3px)}
.pill{
  display:inline-flex;align-items:center;gap:7px;height:30px;padding:0 13px;border-radius:999px;
  background:rgba(228,87,46,.10);color:var(--accent);font-size:12.5px;font-weight:600;letter-spacing:.02em;
}
.pill--ink{background:var(--ink);color:#fff}
.tag{
  display:inline-flex;align-items:center;height:26px;padding:0 11px;border-radius:999px;
  background:#fff;border:1px solid var(--line);color:var(--muted);font-size:12.5px;font-weight:500;
}

/* ---------- Hero ---------- */
.hero{padding:80px 0 72px;background:var(--paper);position:relative;overflow:hidden}
.hero-grid{display:grid;grid-template-columns:1.02fr .98fr;gap:64px;align-items:center}
.hero h1{font-size:52px;line-height:1.15;margin:20px 0 18px;max-width:15em}
.hero-sub{font-size:18px;color:var(--muted);max-width:26em}
.hero-actions{display:flex;flex-wrap:wrap;gap:14px;margin:32px 0 26px}
.hero-points{display:flex;flex-wrap:wrap;gap:0;border-top:1px solid var(--line);padding-top:18px}
.hero-points li{font-size:13.5px;color:var(--muted);padding-right:20px;margin-right:20px;border-right:1px solid var(--div);line-height:1.5}
.hero-points li:last-child{border-right:none;padding-right:0;margin-right:0}
.hero-visual{position:relative;margin:0}
.hero-visual img{
  width:100%;aspect-ratio:16/9;object-fit:cover;border-radius:16px;background:var(--warm);
  box-shadow:var(--sh-2);
}
.hero-badge{
  position:absolute;right:16px;bottom:16px;background:rgba(255,255,255,.94);border:1px solid var(--line);
  border-radius:999px;padding:8px 16px;font-size:12.5px;font-weight:600;color:var(--ink);
  display:flex;align-items:center;gap:8px;backdrop-filter:blur(6px);
}
.hero-badge::before{content:"";width:7px;height:7px;border-radius:50%;background:var(--accent)}

/* ---------- 数字条 ---------- */
.statbar{padding:0 0 8px}
.stat-grid{
  display:grid;grid-template-columns:repeat(4,1fr);gap:0;background:#fff;
  border:1px solid var(--line);border-radius:var(--r-card);overflow:hidden;box-shadow:var(--sh-1);
}
.stat{padding:26px 28px;border-right:1px solid var(--div)}
.stat:last-child{border-right:none}
.stat strong{display:block;font-size:32px;font-weight:700;letter-spacing:-0.02em;line-height:1.1;color:var(--ink)}
.stat strong small{font-size:15px;font-weight:600;margin-left:3px;color:var(--muted)}
.stat span{display:block;font-size:13.5px;color:var(--soft);margin-top:6px}

/* ---------- 通用板块头 ---------- */
.section-head{display:flex;align-items:flex-end;justify-content:space-between;gap:24px;margin-bottom:44px}
.section-head h2{font-size:34px;line-height:1.25;margin-bottom:12px}
.section-head p{color:var(--muted);font-size:16px;max-width:44em}
.section-head .eyebrow{
  display:inline-block;font-size:12.5px;font-weight:600;letter-spacing:.14em;color:var(--accent);
  text-transform:uppercase;margin-bottom:12px;
}

/* ---------- 卡片网格 ---------- */
.grid-3{display:grid;grid-template-columns:repeat(3,1fr);gap:24px}
.grid-2{display:grid;grid-template-columns:repeat(2,1fr);gap:24px}
.card{
  display:flex;flex-direction:column;height:100%;background:#fff;border:1px solid var(--line);
  border-radius:var(--r-card);overflow:hidden;box-shadow:var(--sh-1);
  transition:box-shadow .3s ease,border-color .3s ease;
}
.card:hover{box-shadow:var(--sh-2);border-color:#d8d3c9}
.card-media{position:relative;aspect-ratio:4/3;background:var(--warm);overflow:hidden}
.card-media img{width:100%;height:100%;object-fit:cover;border-radius:0;transition:transform .45s ease}
.card:hover .card-media img{transform:scale(1.03)}
.card-media .card-tag{
  position:absolute;left:12px;top:12px;background:rgba(14,17,19,.86);color:#fff;
  border-radius:999px;padding:5px 12px;font-size:12px;font-weight:600;letter-spacing:.02em;
}
.card-body{padding:22px 22px 24px;display:flex;flex-direction:column;gap:10px;flex:1}
.card-body h3{font-size:19px;line-height:1.4;font-weight:600}
.card-desc{
  font-size:15px;color:var(--muted);line-height:1.7;
  display:-webkit-box;-webkit-line-clamp:1;-webkit-box-orient:vertical;overflow:hidden;
}
.card-link{margin-top:auto;display:inline-flex;align-items:center;gap:6px;font-size:13.5px;font-weight:600;color:var(--accent)}
.card-link i{transition:transform .25s ease}
.card:hover .card-link i{transform:translateX(3px)}

/* ---------- 分类入口大卡 ---------- */
.cat-card{
  position:relative;display:block;border-radius:var(--r-card);overflow:hidden;border:1px solid var(--line);
  background:var(--warm);min-height:280px;box-shadow:var(--sh-1);transition:box-shadow .3s ease;
}
.cat-card:hover{box-shadow:var(--sh-2)}
.cat-card img{width:100%;height:100%;position:absolute;inset:0;object-fit:cover;border-radius:0;opacity:.9}
.cat-card .cat-veil{
  position:absolute;inset:0;background:linear-gradient(180deg,rgba(16,32,27,.15) 0%,rgba(16,32,27,.88) 78%);
}
.cat-card .cat-inner{position:relative;z-index:2;display:flex;flex-direction:column;justify-content:flex-end;
  min-height:280px;padding:28px;color:#fff}
.cat-card h3{font-size:24px;margin-bottom:10px;color:#fff}
.cat-card p{font-size:14.5px;color:rgba(255,255,255,.82);line-height:1.7;max-width:34em}
.cat-card .cat-more{margin-top:18px;display:inline-flex;align-items:center;gap:8px;font-size:13.5px;font-weight:600;color:#fff}
.cat-card .cat-more i{transition:transform .25s ease}
.cat-card:hover .cat-more i{transform:translateX(4px)}

/* ---------- 评价轮播 ---------- */
.review-track{
  display:grid;grid-auto-flow:column;grid-auto-columns:calc((100% - 48px)/3);gap:24px;
  overflow-x:auto;scroll-snap-type:x mandatory;scrollbar-width:none;padding-bottom:4px;
  -webkit-overflow-scrolling:touch;
}
.review-track::-webkit-scrollbar{display:none}
.review-card{
  scroll-snap-align:start;background:#fff;border:1px solid var(--line);border-radius:var(--r-card);
  padding:26px;display:flex;flex-direction:column;gap:16px;box-shadow:var(--sh-1);transition:box-shadow .3s ease;
}
.review-card:hover{box-shadow:var(--sh-2)}
.review-top{display:flex;align-items:center;gap:14px}
.avatar{
  width:46px;height:46px;flex:0 0 46px;border-radius:50%;background:var(--warm);border:1px solid var(--line);
  display:flex;align-items:center;justify-content:center;font-size:15px;font-weight:700;color:var(--muted);
}
.review-top strong{display:block;font-size:15px;font-weight:600}
.review-top span{display:block;font-size:12.5px;color:var(--soft)}
.stars{color:var(--accent);font-size:12.5px;letter-spacing:2px}
.review-card p{font-size:14.8px;color:var(--muted);line-height:1.75;
  display:-webkit-box;-webkit-line-clamp:3;-webkit-box-orient:vertical;overflow:hidden}
.review-nav{display:flex;align-items:center;gap:20px;margin-top:28px}
.round-btn{
  width:46px;height:46px;border-radius:50%;border:1px solid var(--line);background:#fff;
  display:inline-flex;align-items:center;justify-content:center;font-size:15px;color:var(--ink);
  transition:all .25s ease;
}
.round-btn:hover{background:var(--ink);color:#fff;border-color:var(--ink)}
.dots{display:flex;align-items:center;gap:8px}
.dots i{width:8px;height:8px;border-radius:50%;background:var(--line);transition:all .25s ease;display:block}
.dots i.is-on{background:var(--accent);width:22px;border-radius:999px}

/* ---------- 保障条 ---------- */
.guard{background:var(--deep);color:#fff;padding:64px 0}
.guard-grid{display:grid;grid-template-columns:repeat(4,1fr);gap:32px}
.guard-item{display:flex;flex-direction:column;gap:10px}
.guard-item i{font-size:20px;color:var(--accent)}
.guard-item h3{font-size:17px;font-weight:600;color:#fff}
.guard-item p{font-size:14px;color:rgba(255,255,255,.66);line-height:1.7}

/* ---------- 下载 CTA ---------- */
.cta-band{background:var(--warm);padding:88px 0}
.cta-inner{display:grid;grid-template-columns:1fr auto;gap:40px;align-items:center}
.cta-inner h2{font-size:38px;line-height:1.2;margin-bottom:14px}
.cta-inner p{color:var(--muted);font-size:16px;max-width:40em}
.cta-note{margin-top:20px;font-size:13px;color:var(--soft)}
.cta-side{display:flex;flex-direction:column;align-items:flex-start;gap:14px}

/* ---------- CMS 列表 ---------- */
.post-card{
  display:flex;flex-direction:column;gap:12px;background:#fff;border:1px solid var(--line);
  border-radius:var(--r-card);padding:24px;height:100%;box-shadow:var(--sh-1);
  transition:box-shadow .3s ease,border-color .3s ease;
}
.post-card:hover{box-shadow:var(--sh-2);border-color:#d8d3c9}
.post-meta{display:flex;align-items:center;gap:12px;font-size:12.5px;color:var(--soft)}
.post-meta .tag{height:24px;padding:0 10px;font-size:12px}
.post-card h3{font-size:18.5px;font-weight:600;line-height:1.45;
  display:-webkit-box;-webkit-line-clamp:2;-webkit-box-orient:vertical;overflow:hidden}
.post-card p{font-size:14.5px;color:var(--muted);line-height:1.7;
  display:-webkit-box;-webkit-line-clamp:2;-webkit-box-orient:vertical;overflow:hidden}
.empty-state{
  grid-column:1/-1;display:flex;flex-direction:column;align-items:center;gap:14px;text-align:center;
  padding:52px 24px;background:#fff;border:1px dashed var(--line);border-radius:var(--r-card);color:var(--muted);
}
.empty-state i{font-size:22px;color:var(--soft)}
.empty-state a{color:var(--accent);font-weight:600;font-size:14px}

/* ---------- FAQ ---------- */
.faq{display:grid;gap:12px;max-width:900px}
.faq-item{border:1px solid var(--line);border-radius:var(--r-card);background:#fff;overflow:hidden;transition:border-color .25s ease}
.faq-item.is-open{border-color:#d8d3c9;box-shadow:var(--sh-1)}
.faq-q{
  width:100%;display:flex;align-items:center;justify-content:space-between;gap:20px;text-align:left;
  padding:20px 24px;font-size:16px;font-weight:600;line-height:1.6;color:var(--ink);
}
.faq-q i{flex:0 0 auto;font-size:14px;color:var(--soft);transition:transform .3s ease}
.faq-item.is-open .faq-q i{transform:rotate(45deg);color:var(--accent)}
.faq-a{max-height:0;overflow:hidden;transition:max-height .35s ease}
.faq-a p{padding:0 24px 22px;font-size:15px;color:var(--muted);line-height:1.8;max-width:60em}

/* ---------- 页脚 ---------- */
.site-footer{background:var(--deep);color:rgba(255,255,255,.72);padding:72px 0 0;margin-top:0}
.footer-grid{display:grid;grid-template-columns:1.5fr 1fr 1fr 1.1fr;gap:40px;padding-bottom:56px}
.footer-brand{display:flex;align-items:center;gap:12px;margin-bottom:16px}
.footer-brand .brand-mark{background:var(--accent);color:#fff}
.footer-brand strong{color:#fff;font-size:16.5px}
.site-footer h4{font-size:14px;color:#fff;font-weight:600;margin-bottom:16px;letter-spacing:.04em}
.site-footer p{font-size:14px;line-height:1.8;color:rgba(255,255,255,.64);max-width:30em}
.site-footer a{font-size:14px;color:rgba(255,255,255,.72);display:inline-block;padding:4px 0}
.site-footer a:hover{color:var(--accent)}
.footer-links{display:grid;gap:2px}
.footer-contact li{font-size:14px;padding:4px 0;display:flex;gap:10px;align-items:flex-start;color:rgba(255,255,255,.72)}
.footer-contact i{color:var(--accent);font-size:13px;margin-top:6px}
.footer-bottom{
  border-top:1px solid rgba(255,255,255,.12);padding:22px 0 26px;display:flex;flex-wrap:wrap;
  gap:12px;justify-content:space-between;font-size:13px;color:rgba(255,255,255,.5);
}

/* ---------- 动效 ---------- */
.reveal{opacity:0;transform:translateY(8px);transition:opacity .4s ease-out,transform .4s ease-out}
.reveal.is-in{opacity:1;transform:none}
@media (prefers-reduced-motion:reduce){
  .reveal{opacity:1;transform:none;transition:none}
  html{scroll-behavior:auto}
  .card:hover .card-media img{transform:none}
}

/* ---------- 响应式 ---------- */
@media (max-width:1180px){
  .hero h1{font-size:44px}
  .review-track{grid-auto-columns:calc((100% - 24px)/2)}
}
@media (max-width:1023px){
  .search,.header-cta{display:none}
  .nav-toggle{display:inline-flex}
  .mobile-drawer{display:block}
  .hero-grid{grid-template-columns:1fr;gap:40px}
  .hero{padding:56px 0}
  .hero h1{font-size:38px}
  .grid-3{grid-template-columns:repeat(2,1fr)}
  .stat-grid{grid-template-columns:repeat(2,1fr)}
  .stat:nth-child(2){border-right:none}
  .stat:nth-child(1),.stat:nth-child(2){border-bottom:1px solid var(--div)}
  .guard-grid{grid-template-columns:repeat(2,1fr);gap:28px}
  .footer-grid{grid-template-columns:1fr 1fr;gap:32px}
  .section{padding:72px 0}
  .cta-inner{grid-template-columns:1fr;gap:28px}
  .cta-inner h2{font-size:32px}
}
@media (max-width:767px){
  body{font-size:16px}
  .container{padding:0 20px}
  .section{padding:56px 0}
  .section-head{flex-direction:column;align-items:flex-start;gap:16px;margin-bottom:32px}
  .section-head h2{font-size:26px}
  .hero h1{font-size:31px}
  .hero-sub{font-size:16.5px}
  .hero-points{gap:10px 0}
  .hero-points li{padding-right:14px;margin-right:14px}
  .grid-3,.grid-2,.guard-grid{grid-template-columns:1fr}
  .stat-grid{grid-template-columns:1fr}
  .stat{border-right:none!important;border-bottom:1px solid var(--div)}
  .stat:last-child{border-bottom:none}
  .review-track{grid-auto-columns:86%}
  .footer-grid{grid-template-columns:1fr;gap:28px;padding-bottom:40px}
  .cta-band{padding:56px 0}
  .cta-side{width:100%}
  .cta-side .btn{width:100%}
  .brand-text strong{font-size:15px;white-space:normal}
}
@media (max-width:480px){
  .hero h1{font-size:27px}
  .hero-actions .btn{width:100%}
  .stat strong{font-size:26px}
  .card-body{padding:18px}
}

/* roulang page: article */
:root{
  --ink:#0E1113;
  --accent:#E4572E;
  --accent-dark:#C8461F;
  --grey:#5B6663;
  --fog:#8A9490;
  --paper:#FAF9F6;
  --warm:#F1EFEA;
  --deep:#10201B;
  --line:#E3DFD7;
  --divider:#EDEAE3;
  --white:#FFFFFF;
  --radius-card:14px;
  --radius-img:12px;
  --radius-btn:999px;
  --radius-input:10px;
  --shadow-1:0 1px 2px rgba(14,17,19,.04);
  --shadow-2:0 12px 32px rgba(14,17,19,.10);
  --container:1200px;
  --ease:cubic-bezier(.22,.61,.36,1);
}
*,*::before,*::after{box-sizing:border-box}
html{-webkit-text-size-adjust:100%;scroll-behavior:smooth}
body{
  margin:0;
  background:var(--paper);
  color:var(--ink);
  font-family:"PingFang SC","Hiragino Sans GB","Microsoft YaHei",system-ui,-apple-system,"Segoe UI",Roboto,sans-serif;
  font-size:16px;
  line-height:1.78;
  -webkit-font-smoothing:antialiased;
}
img{max-width:100%;display:block}
a{color:inherit;text-decoration:none}
button,input{font:inherit;color:inherit}
button{cursor:pointer;border:0;background:none}
h1,h2,h3,h4{margin:0;font-weight:700;letter-spacing:-.02em;line-height:1.25}
p{margin:0}
ul,ol{margin:0;padding:0;list-style:none}
:focus-visible{outline:2px solid var(--accent);outline-offset:2px}
.container{width:100%;max-width:var(--container);margin:0 auto;padding:0 32px}

/* ---------- 顶栏 ---------- */
.site-header{
  position:sticky;
  top:0;
  z-index:80;
  background:rgba(250,249,246,.94);
  backdrop-filter:saturate(160%) blur(10px);
  border-bottom:1px solid transparent;
  transition:border-color .25s var(--ease),box-shadow .25s var(--ease);
}
.site-header.is-scrolled{border-bottom-color:var(--line);box-shadow:0 1px 12px rgba(14,17,19,.06)}
.header-top{display:flex;align-items:center;gap:24px;height:74px}
.brand{display:flex;align-items:center;gap:12px;flex:none}
.brand-mark{
  display:inline-flex;align-items:center;justify-content:center;
  width:40px;height:40px;border-radius:12px;
  background:var(--ink);color:#fff;font-weight:700;font-size:17px;flex:none;
}
.brand-text strong{display:block;font-size:16px;font-weight:700;letter-spacing:-.01em;line-height:1.3}
.brand-text em{display:block;font-style:normal;font-size:12px;color:var(--fog);letter-spacing:.08em}
.search{
  flex:1;max-width:460px;display:flex;align-items:center;gap:10px;
  height:44px;padding:0 8px 0 14px;background:#fff;
  border:1px solid var(--line);border-radius:var(--radius-input);
  transition:border-color .2s var(--ease),box-shadow .2s var(--ease);
}
.search i{color:var(--fog);font-size:14px}
.search input{flex:1;height:100%;border:0;outline:0;background:transparent;font-size:14px}
.search input::placeholder{color:#A9B2AF}
.search button{
  height:32px;padding:0 16px;border-radius:8px;
  background:var(--ink);color:#fff;font-size:13px;
  transition:background .2s var(--ease);
}
.search button:hover{background:var(--accent)}
.search:focus-within{border-color:var(--accent);box-shadow:0 0 0 3px rgba(228,87,46,.14)}
.btn{
  display:inline-flex;align-items:center;justify-content:center;gap:8px;
  min-height:44px;padding:0 24px;font-size:15px;font-weight:600;
  border-radius:var(--radius-btn);white-space:nowrap;
  transition:background .22s var(--ease),color .22s var(--ease),border-color .22s var(--ease),box-shadow .22s var(--ease),transform .22s var(--ease);
}
.btn i{font-size:14px}
.btn-primary{background:var(--accent);color:#fff;border:1px solid var(--accent);box-shadow:0 1px 2px rgba(228,87,46,.28)}
.btn-primary:hover{background:var(--accent-dark);border-color:var(--accent-dark);transform:translateY(-1px);box-shadow:0 10px 24px rgba(228,87,46,.26)}
.btn-primary:active{transform:translateY(0);box-shadow:var(--shadow-1)}
.btn-ghost{background:transparent;color:var(--ink);border:1px solid var(--ink)}
.btn-ghost:hover{background:var(--ink);color:#fff}
.btn-lg{min-height:52px;padding:0 32px;font-size:16px}
.header-cta{flex:none}
.nav-toggle{display:none;width:44px;height:44px;border:1px solid var(--line);border-radius:10px;background:#fff;align-items:center;justify-content:center}
.nav-toggle span{position:relative;display:block;width:18px;height:2px;background:var(--ink)}
.nav-toggle span::before,.nav-toggle span::after{content:"";position:absolute;left:0;width:18px;height:2px;background:var(--ink)}
.nav-toggle span::before{top:-6px}
.nav-toggle span::after{top:6px}
.tabs-wrap{border-top:1px solid var(--divider)}
.tabs{display:flex;align-items:center;gap:8px;overflow-x:auto;padding-top:10px;padding-bottom:10px;scrollbar-width:none}
.tabs::-webkit-scrollbar{display:none}
.tab{
  flex:none;padding:8px 18px;border-radius:var(--radius-btn);
  font-size:14px;color:var(--grey);
  transition:background .2s var(--ease),color .2s var(--ease);
}
.tab:hover{background:var(--warm);color:var(--ink)}
.tab.is-active{background:var(--ink);color:#fff}
.mobile-drawer{display:none;border-top:1px solid var(--divider);background:#fff}
.drawer-inner{padding-top:20px;padding-bottom:24px}
.mobile-drawer .search{display:flex;max-width:none;margin-bottom:16px}
.drawer-nav a{display:block;padding:13px 2px;border-bottom:1px solid var(--divider);font-size:15px;color:var(--grey)}
.drawer-nav a:hover{color:var(--accent)}
.drawer-nav a.is-active{color:var(--ink);font-weight:600}
.drawer-cta{margin-top:18px;width:100%}

/* ---------- 文章头部 ---------- */
.article-top{padding:28px 0 0}
.crumbs{display:flex;flex-wrap:wrap;align-items:center;gap:8px;font-size:14px;color:var(--fog)}
.crumbs a{color:var(--fog);transition:color .2s var(--ease)}
.crumbs a:hover{color:var(--accent)}
.crumbs .sep{color:#C7CECB}
.crumbs .current{color:var(--ink);font-weight:600;max-width:60ch;overflow:hidden;text-overflow:ellipsis;white-space:nowrap}
.post-head{padding:24px 0 32px;border-bottom:1px solid var(--divider)}
.post-tags{display:flex;flex-wrap:wrap;gap:8px;margin-bottom:18px}
.tag{
  display:inline-flex;align-items:center;gap:6px;
  padding:5px 12px;border-radius:var(--radius-btn);
  font-size:13px;font-weight:600;
  background:rgba(228,87,46,.10);color:var(--accent);
}
.tag-dark{background:var(--ink);color:#fff}
.post-title{font-size:44px;line-height:1.16;letter-spacing:-.02em;max-width:920px}
.post-meta{display:flex;flex-wrap:wrap;gap:22px;margin-top:22px;font-size:14px;color:var(--fog)}
.post-meta span{display:inline-flex;align-items:center;gap:8px}
.post-meta i{color:var(--accent)}
.post-cover{margin:32px 0 0;border-radius:var(--radius-img);overflow:hidden;background:var(--warm);aspect-ratio:16/9}
.post-cover img{width:100%;height:100%;object-fit:cover}

/* ---------- 正文 ---------- */
.article-shell{padding:56px 0 0}
.article-body{
  max-width:800px;margin:0 auto;
  font-size:17px;line-height:1.85;color:#252B2A;
}
.article-body p{margin:0 0 24px}
.article-body h2{
  position:relative;font-size:28px;line-height:1.35;
  margin:52px 0 18px;padding-top:6px;
}
.article-body h2::before{
  content:"";position:absolute;top:-10px;left:0;
  width:48px;height:3px;border-radius:2px;background:var(--accent);
}
.article-body h3{font-size:21px;margin:34px 0 14px;font-weight:600}
.article-body h4{font-size:18px;margin:26px 0 12px;font-weight:600}
.article-body a{color:var(--accent);text-decoration:underline;text-underline-offset:3px}
.article-body a:hover{color:var(--accent-dark)}
.article-body strong{font-weight:700;color:var(--ink)}
.article-body ul{margin:0 0 24px}
.article-body ul li{position:relative;padding-left:22px;margin-bottom:10px}
.article-body ul li::before{
  content:"";position:absolute;left:0;top:.68em;
  width:8px;height:8px;border-radius:2px;background:var(--accent);
}
.article-body ol{counter-reset:n;margin:0 0 24px}
.article-body ol li{position:relative;padding-left:32px;margin-bottom:12px;counter-increment:n}
.article-body ol li::before{
  content:counter(n);position:absolute;left:0;top:.15em;
  width:21px;height:21px;border-radius:6px;
  display:grid;place-items:center;
  background:rgba(228,87,46,.12);color:var(--accent);
  font-size:12px;font-weight:700;
}
.article-body blockquote{
  margin:0 0 24px;padding:18px 22px;
  background:var(--warm);border-left:3px solid var(--accent);
  border-radius:0 10px 10px 0;color:var(--grey);
}
.article-body blockquote p:last-child{margin-bottom:0}
.article-body img{width:100%;height:auto;border-radius:var(--radius-img);margin:6px 0 10px}
.article-body figcaption{font-size:13px;color:var(--fog);text-align:center;margin-bottom:24px}
.article-body table{
  display:block;width:100%;margin:0 0 24px;
  border-collapse:collapse;overflow-x:auto;font-size:15px;
}
.article-body th,.article-body td{
  border:1px solid var(--line);padding:10px 14px;text-align:left;white-space:nowrap;
}
.article-body th{background:var(--warm);font-weight:600}
.article-body pre{
  margin:0 0 24px;padding:18px 20px;overflow-x:auto;
  background:#F4F2EC;border:1px solid var(--line);border-radius:10px;
  font-family:ui-monospace,SFMono-Regular,Menlo,Consolas,monospace;font-size:14px;line-height:1.7;
}
.article-body code{
  padding:2px 6px;border-radius:6px;background:#F4F2EC;
  font-family:ui-monospace,SFMono-Regular,Menlo,Consolas,monospace;font-size:.92em;
}
.article-body pre code{padding:0;background:none}
.article-body hr{border:0;border-top:1px solid var(--divider);margin:36px 0}

.post-nav{
  display:grid;grid-template-columns:1fr 1fr;gap:16px;
  max-width:800px;margin:56px auto 0;
}
.post-nav a{
  display:block;padding:20px 22px;background:#fff;
  border:1px solid var(--line);border-radius:var(--radius-card);
  transition:border-color .22s var(--ease),box-shadow .22s var(--ease);
}
.post-nav a:hover{border-color:var(--ink);box-shadow:var(--shadow-2)}
.post-nav .label{display:block;font-size:13px;color:var(--fog);margin-bottom:6px}
.post-nav .ttl{display:block;font-size:16px;font-weight:600;line-height:1.5}

.empty-state{
  max-width:640px;margin:0 auto;padding:72px 32px;text-align:center;
  background:#fff;border:1px solid var(--line);border-radius:var(--radius-card);
}
.empty-state i{display:block;font-size:34px;color:var(--fog)}
.empty-state p{margin:16px 0 24px;font-size:19px;font-weight:600}

/* ---------- 通用板块 ---------- */
.section{padding:96px 0 0}
.section-head{display:flex;align-items:flex-end;justify-content:space-between;gap:24px;margin-bottom:32px}
.section-head h2{font-size:32px;line-height:1.25}
.section-head p{margin-top:10px;font-size:15px;color:var(--grey)}
.link-more{display:inline-flex;align-items:center;gap:8px;font-size:14px;font-weight:600;color:var(--grey);transition:color .2s var(--ease)}
.link-more i{font-size:12px;transition:transform .2s var(--ease)}
.link-more:hover{color:var(--accent)}
.link-more:hover i{transform:translateX(3px)}

.related-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:24px}
.card{
  display:flex;flex-direction:column;overflow:hidden;
  background:#fff;border:1px solid var(--line);border-radius:var(--radius-card);
  box-shadow:var(--shadow-1);
  transition:box-shadow .3s var(--ease),border-color .3s var(--ease);
}
.card:hover{box-shadow:var(--shadow-2);border-color:#D8D2C7}
.card-media{aspect-ratio:4/3;background:var(--warm);overflow:hidden}
.card-media img{width:100%;height:100%;object-fit:cover;transition:transform .5s var(--ease)}
.card:hover .card-media img{transform:scale(1.03)}
.card-body{display:flex;flex-direction:column;gap:10px;padding:20px 22px 24px;flex:1}
.card-meta{display:flex;flex-wrap:wrap;gap:10px;align-items:center;font-size:13px;color:var(--fog)}
.card-meta .cat{color:var(--accent);font-weight:600}
.card-body h3{font-size:18px;line-height:1.5}
.card-body p{font-size:14px;line-height:1.7;color:var(--grey)}

/* ---------- CTA ---------- */
.cta-band{margin-top:96px;background:var(--deep);color:#fff}
.cta-inner{display:flex;align-items:center;justify-content:space-between;gap:48px;padding:72px 32px}
.cta-inner h2{font-size:34px;line-height:1.25;max-width:620px}
.cta-inner p{margin-top:14px;font-size:15px;color:#A6B2AD;max-width:620px}
.cta-side{display:flex;flex-direction:column;align-items:flex-start;gap:12px;flex:none}
.cta-note{font-size:13px;color:#7F8C87;line-height:1.7}

/* ---------- 页脚 ---------- */
.site-footer{margin-top:96px;background:var(--deep);color:#D7DEDA;padding:64px 0 28px}
.footer-grid{display:grid;grid-template-columns:1.5fr 1fr 1fr 1.2fr;gap:40px}
.footer-brand{display:flex;align-items:center;gap:10px;margin-bottom:16px;color:#fff}
.footer-brand .brand-mark{width:34px;height:34px;border-radius:10px;background:var(--accent);font-size:15px}
.footer-brand strong{font-size:15px}
.site-footer p{font-size:14px;line-height:1.8;color:#9AA6A1;max-width:340px}
.site-footer h4{font-size:15px;color:#fff;margin-bottom:16px}
.footer-links{display:flex;flex-direction:column;gap:10px}
.footer-links a{font-size:14px;color:#9AA6A1;transition:color .2s var(--ease)}
.footer-links a:hover{color:#fff}
.footer-contact li{display:flex;gap:9px;align-items:flex-start;font-size:14px;line-height:1.7;color:#9AA6A1;margin-bottom:10px}
.footer-contact i{margin-top:5px;color:var(--accent);font-size:13px}
.footer-bottom{
  display:flex;flex-wrap:wrap;justify-content:space-between;gap:12px;
  margin-top:48px;padding-top:24px;border-top:1px solid rgba(255,255,255,.10);
  font-size:13px;color:#7C8886;
}

/* ---------- 回到顶部 ---------- */
.to-top{
  position:fixed;right:24px;bottom:28px;z-index:70;
  width:46px;height:46px;border-radius:50%;
  display:grid;place-items:center;
  background:var(--ink);color:#fff;box-shadow:var(--shadow-2);
  opacity:0;visibility:hidden;transform:translateY(8px);
  transition:opacity .3s var(--ease),transform .3s var(--ease),background .2s var(--ease),visibility .3s;
}
.to-top.is-on{opacity:1;visibility:visible;transform:none}
.to-top:hover{background:var(--accent)}

.reveal{opacity:0;transform:translateY(8px);transition:opacity .4s ease-out,transform .4s ease-out}
.reveal.is-in{opacity:1;transform:none}

/* ---------- 响应式 ---------- */
@media (max-width:1199px){
  .article-body{max-width:760px}
  .post-title{font-size:38px}
}
@media (max-width:1023px){
  .search{display:none}
  .header-cta{display:none}
  .nav-toggle{display:flex}
  .mobile-drawer.is-open{display:block}
  .section{padding-top:72px}
  .related-grid{grid-template-columns:repeat(2,1fr)}
  .footer-grid{grid-template-columns:1fr 1fr;gap:32px}
  .cta-inner{flex-direction:column;align-items:flex-start;gap:28px;padding:56px 32px}
}
@media (max-width:767px){
  .container{padding:0 20px}
  .header-top{height:66px;gap:14px}
  .brand-text em{display:none}
  .brand-text strong{font-size:15px}
  .article-top{padding-top:20px}
  .post-title{font-size:32px;line-height:1.22}
  .post-meta{gap:14px;font-size:13px}
  .post-head{padding:20px 0 24px}
  .article-shell{padding-top:36px}
  .article-body{font-size:16px;line-height:1.85}
  .article-body h2{font-size:23px;margin:40px 0 14px}
  .article-body h3{font-size:19px}
  .post-nav{grid-template-columns:1fr;margin-top:40px}
  .section{padding-top:56px}
  .section-head{flex-direction:column;align-items:flex-start;gap:12px}
  .section-head h2{font-size:25px}
  .related-grid{grid-template-columns:1fr}
  .cta-band,.site-footer{margin-top:56px}
  .cta-inner{padding:48px 20px}
  .cta-inner h2{font-size:26px}
  .cta-side{width:100%}
  .cta-side .btn{width:100%}
  .footer-grid{grid-template-columns:1fr;gap:28px}
  .site-footer{padding:48px 0 24px}
  .to-top{right:16px;bottom:20px}
}
@media (max-width:480px){
  .post-title{font-size:28px}
  .tag{font-size:12px}
}
@media (prefers-reduced-motion:reduce){
  *,*::before,*::after{animation:none!important;transition:none!important}
  .reveal{opacity:1;transform:none}
  html{scroll-behavior:auto}
}

/* roulang page: category2 */
:root{
  --ink:#0E1113;
  --accent:#E4572E;
  --accent-dark:#C8471F;
  --gray:#5B6663;
  --mist:#8A9490;
  --paper:#FAF9F6;
  --warm:#F1EFEA;
  --deep:#10201B;
  --line:#E3DFD7;
  --hair:#EDEAE3;
  --r-card:14px;
  --r-img:12px;
  --r-btn:999px;
  --r-input:10px;
  --sh-1:0 1px 2px rgba(14,17,19,.04);
  --sh-2:0 12px 32px rgba(14,17,19,.10);
  --maxw:1200px;
  --ease:cubic-bezier(.22,.61,.36,1);
}
*,*::before,*::after{box-sizing:border-box;}
html{-webkit-text-size-adjust:100%;scroll-behavior:smooth;}
body{
  margin:0;background:var(--paper);color:var(--ink);
  font-family:"PingFang SC","Hiragino Sans GB","Microsoft YaHei","Source Han Sans SC",system-ui,-apple-system,"Segoe UI",Roboto,sans-serif;
  font-size:16px;line-height:1.8;letter-spacing:.005em;
  -webkit-font-smoothing:antialiased;
}
img{max-width:100%;display:block;border-radius:var(--r-img);}
a{color:inherit;text-decoration:none;transition:color .2s var(--ease);}
a:hover{color:var(--accent);}
button,input{font:inherit;color:inherit;}
button{cursor:pointer;border:none;background:none;}
ul,ol{margin:0;padding:0;list-style:none;}
h1,h2,h3,h4{margin:0;line-height:1.25;letter-spacing:-.02em;font-weight:700;}
p{margin:0;}
.num{font-variant-numeric:tabular-nums;font-feature-settings:"tnum" 1;}
:focus-visible{outline:2px solid var(--accent);outline-offset:3px;border-radius:4px;}
.container{max-width:var(--maxw);margin:0 auto;padding:0 32px;}

/* ---------- 按钮 / 标签 ---------- */
.btn{
  display:inline-flex;align-items:center;justify-content:center;gap:8px;
  min-height:44px;padding:0 24px;border-radius:var(--r-btn);
  font-size:15px;font-weight:600;letter-spacing:.01em;white-space:nowrap;
  transition:background .22s var(--ease),color .22s var(--ease),transform .18s var(--ease),box-shadow .22s var(--ease),border-color .22s var(--ease);
}
.btn-primary{background:var(--accent);color:#fff;box-shadow:var(--sh-1);}
.btn-primary:hover{background:var(--accent-dark);color:#fff;transform:translateY(-1px);box-shadow:var(--sh-2);}
.btn-primary:active{transform:translateY(0);box-shadow:var(--sh-1);}
.btn-ghost{background:transparent;color:var(--ink);border:1px solid var(--ink);}
.btn-ghost:hover{background:var(--ink);color:#fff;transform:translateY(-1px);}
.btn-ghost:active{transform:translateY(0);}
.btn-light{background:#fff;color:var(--deep);}
.btn-light:hover{background:#fff;color:var(--accent);transform:translateY(-1px);box-shadow:var(--sh-2);}
.btn-text{display:inline-flex;align-items:center;gap:6px;color:var(--accent);font-weight:600;font-size:15px;}
.btn-text i{transition:transform .22s var(--ease);}
.btn-text:hover i{transform:translateX(3px);}
.badge{
  display:inline-flex;align-items:center;gap:6px;height:26px;padding:0 12px;border-radius:999px;
  font-size:13px;font-weight:600;letter-spacing:.02em;
  background:rgba(228,87,46,.10);color:var(--accent);
}
.badge-dark{background:var(--ink);color:#fff;}
.tag{display:inline-block;font-size:13px;color:var(--gray);border:1px solid var(--line);border-radius:999px;padding:2px 10px;}

/* ---------- 页头 ---------- */
.site-header{
  position:sticky;top:0;z-index:60;background:var(--paper);
  border-bottom:1px solid transparent;transition:box-shadow .25s var(--ease),border-color .25s var(--ease);
}
.site-header.is-scrolled{border-bottom-color:var(--line);box-shadow:0 1px 12px rgba(14,17,19,.06);}
.header-top{display:flex;align-items:center;gap:24px;height:76px;}
.brand{display:flex;align-items:center;gap:12px;flex:0 0 auto;}
.brand-mark{
  width:40px;height:40px;border-radius:11px;background:var(--ink);color:#fff;
  display:flex;align-items:center;justify-content:center;font-size:18px;font-weight:700;
}
.brand-text{display:flex;flex-direction:column;line-height:1.3;}
.brand-text strong{font-size:16px;font-weight:700;letter-spacing:-.01em;}
.brand-text em{font-style:normal;font-size:12px;color:var(--mist);letter-spacing:.06em;}
.search{flex:1 1 auto;max-width:420px;display:flex;align-items:center;gap:10px;position:relative;
  background:#fff;border:1px solid var(--line);border-radius:var(--r-input);padding:0 12px;height:44px;
  transition:border-color .2s var(--ease),box-shadow .2s var(--ease);}
.search i{color:var(--mist);font-size:14px;}
.search input{flex:1 1 auto;border:none;background:transparent;outline:none;font-size:14px;min-width:0;}
.search input::placeholder{color:var(--mist);}
.search:focus-within{border-color:var(--accent);box-shadow:0 0 0 3px rgba(228,87,46,.12);}
.search button{flex:0 0 auto;height:32px;padding:0 14px;border-radius:8px;background:var(--ink);color:#fff;font-size:13px;font-weight:600;transition:background .2s var(--ease);}
.search button:hover{background:var(--accent);}
.header-cta{flex:0 0 auto;}
.nav-toggle{display:none;width:44px;height:44px;border-radius:12px;border:1px solid var(--line);align-items:center;justify-content:center;}
.nav-toggle span{display:block;width:18px;height:2px;background:var(--ink);position:relative;}
.nav-toggle span::before,.nav-toggle span::after{content:"";position:absolute;left:0;width:18px;height:2px;background:var(--ink);transition:transform .2s var(--ease);}
.nav-toggle span::before{top:-6px;}
.nav-toggle span::after{top:6px;}

.tabs-wrap{border-top:1px solid var(--hair);position:relative;}
.tabs-wrap::after{content:"";position:absolute;right:0;top:0;bottom:0;width:40px;background:linear-gradient(90deg,rgba(250,249,246,0),var(--paper));pointer-events:none;}
.tabs{display:flex;align-items:center;gap:8px;height:52px;overflow-x:auto;scrollbar-width:none;-ms-overflow-style:none;}
.tabs::-webkit-scrollbar{display:none;}
.tab{
  flex:0 0 auto;padding:6px 16px;border-radius:999px;font-size:14px;font-weight:500;color:var(--gray);
  border:1px solid transparent;transition:all .2s var(--ease);
}
.tab:hover{color:var(--ink);background:var(--warm);}
.tab.is-active{background:var(--ink);color:#fff;font-weight:600;}

/* ---------- 矮版 Hero ---------- */
.page-hero{position:relative;min-height:262px;display:flex;align-items:flex-end;overflow:hidden;border-radius:0;}
.page-hero-bg{position:absolute;inset:0;background-size:cover;background-position:center;transform:scale(1.02);}
.page-hero::after{content:"";position:absolute;inset:0;background:linear-gradient(100deg,rgba(16,32,27,.88) 12%,rgba(16,32,27,.62) 58%,rgba(16,32,27,.34) 100%);}
.page-hero .container{position:relative;z-index:2;padding-top:52px;padding-bottom:44px;}
.page-hero h1{color:#fff;font-size:38px;line-height:1.2;max-width:820px;}
.page-hero p{color:rgba(255,255,255,.78);font-size:16px;margin-top:14px;max-width:640px;}
.hero-meta{display:flex;flex-wrap:wrap;gap:10px;margin-bottom:18px;}
.hero-meta .badge{background:rgba(228,87,46,.92);color:#fff;}
.hero-meta .tag{border-color:rgba(255,255,255,.28);color:rgba(255,255,255,.82);}

/* ---------- 面包屑 ---------- */
.breadcrumb{padding:20px 0 0;font-size:14px;color:var(--gray);}
.breadcrumb a{color:var(--gray);}
.breadcrumb a:hover{color:var(--accent);}
.breadcrumb .sep{margin:0 8px;color:var(--line);}
.breadcrumb .current{color:var(--ink);font-weight:600;}

/* ---------- 主体两栏 ---------- */
.page-grid{display:grid;grid-template-columns:236px minmax(0,1fr);gap:56px;padding:56px 0 0;align-items:start;}
.anchor-nav{position:sticky;top:152px;}
.anchor-nav h3{font-size:13px;letter-spacing:.12em;color:var(--mist);font-weight:600;text-transform:uppercase;margin-bottom:16px;}
.anchor-list{display:flex;flex-direction:column;gap:2px;border-left:1px solid var(--line);}
.anchor-link{
  display:block;padding:9px 0 9px 16px;margin-left:-1px;border-left:2px solid transparent;
  font-size:14px;color:var(--gray);transition:all .2s var(--ease);
}
.anchor-link:hover{color:var(--ink);border-left-color:var(--line);}
.anchor-link.is-active{color:var(--accent);border-left-color:var(--accent);font-weight:600;}
.anchor-nav .side-box{margin-top:28px;padding:20px;background:var(--warm);border-radius:var(--r-card);border:1px solid var(--line);}
.anchor-nav .side-box strong{display:block;font-size:15px;margin-bottom:6px;}
.anchor-nav .side-box p{font-size:13px;color:var(--gray);line-height:1.7;margin-bottom:14px;}

/* ---------- 内容块 ---------- */
.block{padding-bottom:64px;scroll-margin-top:150px;}
.block:last-of-type{padding-bottom:24px;}
.block-head{margin-bottom:26px;}
.block-head .eyebrow{font-size:13px;letter-spacing:.12em;color:var(--accent);font-weight:700;text-transform:uppercase;}
.block-head h2{font-size:32px;margin-top:10px;}
.block-head p{color:var(--gray);margin-top:12px;font-size:16px;max-width:760px;}
.rule{height:1px;background:var(--hair);margin:0 0 30px;}

.step-list{display:flex;flex-direction:column;gap:0;}
.step-item{display:grid;grid-template-columns:56px minmax(0,1fr);gap:18px;padding:22px 0;border-bottom:1px solid var(--hair);}
.step-item:first-child{border-top:1px solid var(--hair);}
.step-no{font-size:15px;font-weight:700;color:var(--accent);letter-spacing:.06em;padding-top:3px;}
.step-item h3{font-size:19px;font-weight:600;margin-bottom:6px;}
.step-item p{font-size:15px;color:var(--gray);}

.split{display:grid;grid-template-columns:minmax(0,1fr) minmax(0,1fr);gap:44px;align-items:center;}
.split.reverse .split-media{order:2;}
.split-media{position:relative;border-radius:var(--r-card);overflow:hidden;background:var(--warm);aspect-ratio:4/3;}
.split-media img{width:100%;height:100%;object-fit:cover;border-radius:0;transition:transform .5s var(--ease);}
.split-media:hover img{transform:scale(1.03);}
.split-media .float-badge{
  position:absolute;left:16px;bottom:16px;background:rgba(250,249,246,.94);border-radius:999px;
  padding:6px 14px;font-size:13px;font-weight:600;color:var(--ink);backdrop-filter:blur(4px);
}
.split-body h3{font-size:22px;font-weight:600;margin-bottom:14px;}
.split-body p{font-size:15.5px;color:var(--gray);margin-bottom:12px;}
.check-list{display:flex;flex-direction:column;gap:10px;margin-top:18px;}
.check-list li{display:flex;gap:10px;font-size:15px;color:var(--ink);line-height:1.7;}
.check-list li i{color:var(--accent);font-size:14px;margin-top:7px;}

.card-grid{display:grid;grid-template-columns:repeat(2,minmax(0,1fr));gap:24px;}
.module-card{
  background:#fff;border:1px solid var(--line);border-radius:var(--r-card);overflow:hidden;
  box-shadow:var(--sh-1);transition:box-shadow .28s var(--ease),border-color .28s var(--ease);display:flex;flex-direction:column;
}
.module-card:hover{box-shadow:var(--sh-2);border-color:#D9D4CA;}
.module-card .thumb{aspect-ratio:4/3;overflow:hidden;background:var(--warm);}
.module-card .thumb img{width:100%;height:100%;object-fit:cover;border-radius:0;transition:transform .5s var(--ease);}
.module-card:hover .thumb img{transform:scale(1.03);}
.module-card .body{padding:22px 22px 24px;display:flex;flex-direction:column;gap:10px;flex:1 1 auto;}
.module-card h3{font-size:19px;font-weight:600;}
.module-card p{font-size:14.5px;color:var(--gray);line-height:1.7;}
.module-card .foot{margin-top:auto;padding-top:8px;}

.timeline{position:relative;padding-left:28px;}
.timeline::before{content:"";position:absolute;left:5px;top:8px;bottom:8px;width:1px;background:var(--line);}
.tl-item{position:relative;padding:0 0 28px;}
.tl-item:last-child{padding-bottom:0;}
.tl-item::before{content:"";position:absolute;left:-28px;top:9px;width:11px;height:11px;border-radius:50%;background:var(--paper);border:2px solid var(--accent);}
.tl-item .tl-time{font-size:13px;font-weight:700;letter-spacing:.08em;color:var(--accent);text-transform:uppercase;}
.tl-item h3{font-size:18px;font-weight:600;margin:6px 0 6px;}
.tl-item p{font-size:15px;color:var(--gray);}

.spec-list{border-top:1px solid var(--hair);margin-top:22px;}
.spec-row{display:grid;grid-template-columns:150px minmax(0,1fr);gap:18px;padding:14px 0;border-bottom:1px solid var(--hair);font-size:15px;}
.spec-row dt{color:var(--mist);font-size:14px;}
.spec-row dd{margin:0;color:var(--ink);}

.note{display:flex;gap:14px;padding:18px 20px;background:var(--warm);border-radius:var(--r-card);border-left:3px solid var(--accent);margin-top:26px;}
.note i{color:var(--accent);font-size:16px;margin-top:5px;}
.note p{font-size:15px;color:var(--gray);}

/* ---------- CTA ---------- */
.cta-block{
  position:relative;overflow:hidden;border-radius:22px;background:var(--deep);
  padding:56px 48px;display:grid;grid-template-columns:minmax(0,1fr) auto;gap:36px;align-items:center;margin-top:8px;
}
.cta-block .bg{position:absolute;inset:0;background-size:cover;background-position:center;opacity:.20;}
.cta-block .inner{position:relative;z-index:2;}
.cta-block h2{color:#fff;font-size:34px;line-height:1.22;max-width:620px;}
.cta-block p{color:rgba(255,255,255,.72);margin-top:14px;font-size:15.5px;max-width:620px;}
.cta-block .actions{position:relative;z-index:2;display:flex;flex-direction:column;gap:12px;align-items:flex-start;}
.cta-note{position:relative;z-index:2;grid-column:1 / -1;margin-top:6px;font-size:13px;color:rgba(255,255,255,.55);border-top:1px solid rgba(255,255,255,.14);padding-top:16px;}

/* ---------- FAQ ---------- */
.faq{border-top:1px solid var(--hair);}
.faq-item{border-bottom:1px solid var(--hair);}
.faq-q{
  width:100%;display:flex;align-items:center;justify-content:space-between;gap:18px;
  padding:22px 0;text-align:left;font-size:16px;font-weight:600;color:var(--ink);transition:color .2s var(--ease);
}
.faq-q:hover{color:var(--accent);}
.faq-q .ico{flex:0 0 auto;width:28px;height:28px;border-radius:50%;border:1px solid var(--line);display:flex;align-items:center;justify-content:center;font-size:12px;color:var(--gray);transition:all .25s var(--ease);}
.faq-item.is-open .faq-q .ico{background:var(--accent);border-color:var(--accent);color:#fff;transform:rotate(180deg);}
.faq-a{max-height:0;overflow:hidden;transition:max-height .34s var(--ease);}
.faq-a p{padding:0 46px 24px 0;font-size:15px;color:var(--gray);line-height:1.85;}

/* ---------- 页脚 ---------- */
.site-footer{background:var(--deep);color:rgba(255,255,255,.72);margin-top:96px;}
.footer-grid{display:grid;grid-template-columns:1.5fr 1fr 1fr 1.2fr;gap:40px;padding:64px 0 48px;}
.footer-brand{display:flex;align-items:center;gap:10px;margin-bottom:16px;}
.footer-brand .brand-mark{background:rgba(255,255,255,.10);}
.footer-brand strong{color:#fff;font-size:15px;}
.site-footer p{font-size:14px;line-height:1.8;color:rgba(255,255,255,.6);}
.site-footer h4{color:#fff;font-size:14px;letter-spacing:.06em;margin-bottom:16px;font-weight:600;}
.footer-links{display:flex;flex-direction:column;gap:10px;}
.footer-links a{font-size:14px;color:rgba(255,255,255,.66);}
.footer-links a:hover{color:#fff;}
.footer-contact{display:flex;flex-direction:column;gap:12px;font-size:14px;color:rgba(255,255,255,.66);}
.footer-contact li{display:flex;gap:10px;line-height:1.7;}
.footer-contact i{color:var(--accent);margin-top:5px;font-size:13px;}
.footer-bottom{
  display:flex;justify-content:space-between;gap:16px;flex-wrap:wrap;
  border-top:1px solid rgba(255,255,255,.12);padding:22px 0 28px;font-size:13px;color:rgba(255,255,255,.5);
}

/* ---------- 动效 ---------- */
.reveal{opacity:0;transform:translateY(8px);transition:opacity .4s var(--ease),transform .4s var(--ease);}
.reveal.is-visible{opacity:1;transform:none;}

/* ---------- 响应式 ---------- */
@media (max-width:1199px){
  .page-grid{grid-template-columns:200px minmax(0,1fr);gap:40px;}
  .page-hero h1{font-size:34px;}
  .block-head h2{font-size:28px;}
  .cta-block h2{font-size:30px;}
}
@media (max-width:1023px){
  .header-top{height:68px;gap:14px;}
  .search{display:none;}
  .nav-toggle{display:flex;}
  .header-cta{display:none;}
  .tabs-wrap{position:relative;}
  .page-grid{grid-template-columns:minmax(0,1fr);gap:32px;padding-top:36px;}
  .anchor-nav{position:static;top:auto;}
  .anchor-nav h3{display:none;}
  .anchor-list{
    flex-direction:row;gap:8px;border-left:none;overflow-x:auto;padding-bottom:6px;
    scrollbar-width:none;
  }
  .anchor-list::-webkit-scrollbar{display:none;}
  .anchor-link{
    flex:0 0 auto;padding:7px 14px;border:1px solid var(--line);border-radius:999px;margin-left:0;
    background:#fff;font-size:13.5px;
  }
  .anchor-link.is-active{border-color:var(--accent);background:rgba(228,87,46,.08);}
  .anchor-nav .side-box{display:none;}
  .block{padding-bottom:52px;scroll-margin-top:130px;}
  .split{grid-template-columns:minmax(0,1fr);gap:26px;}
  .split.reverse .split-media{order:0;}
  .cta-block{grid-template-columns:minmax(0,1fr);padding:44px 32px;gap:24px;}
  .footer-grid{grid-template-columns:1fr 1fr;gap:32px;padding:52px 0 40px;}
  .page-hero{min-height:236px;}
}
@media (max-width:767px){
  .container{padding:0 20px;}
  .page-hero .container{padding-top:40px;padding-bottom:34px;}
  .page-hero h1{font-size:29px;}
  .page-hero p{font-size:15px;}
  .block-head h2{font-size:25px;}
  .card-grid{grid-template-columns:minmax(0,1fr);}
  .spec-row{grid-template-columns:minmax(0,1fr);gap:4px;}
  .cta-block h2{font-size:26px;}
  .cta-block .actions{width:100%;}
  .cta-block .actions .btn{width:100%;}
  .footer-grid{grid-template-columns:1fr;gap:28px;}
  .footer-bottom{flex-direction:column;gap:8px;}
  .site-footer{margin-top:64px;}
}
@media (max-width:480px){
  .brand-text strong{font-size:14px;}
  .brand-text em{display:none;}
  .step-item{grid-template-columns:44px minmax(0,1fr);gap:12px;}
  .tabs{height:48px;}
  .tab{font-size:13px;padding:6px 12px;}
}
@media (prefers-reduced-motion:reduce){
  *{animation:none!important;transition-duration:.001ms!important;}
  html{scroll-behavior:auto;}
  .reveal{opacity:1;transform:none;}
}

/* roulang page: category1 */
:root{
  --ink:#0E1113;
  --accent:#E4572E;
  --accent-deep:#c8461f;
  --muted:#5B6663;
  --faint:#8A9490;
  --paper:#FAF9F6;
  --warm:#F1EFEA;
  --deep:#10201B;
  --line:#E3DFD7;
  --rule:#EDEAE3;
  --r-card:14px;
  --r-img:12px;
  --r-btn:999px;
  --r-input:10px;
  --sh-1:0 1px 2px rgba(14,17,19,.04);
  --sh-2:0 12px 32px rgba(14,17,19,.10);
  --maxw:1200px;
  --header-h:72px;
}
*,*::before,*::after{box-sizing:border-box}
html{scroll-behavior:smooth;scroll-padding-top:118px;-webkit-text-size-adjust:100%}
body{
  margin:0;background:var(--paper);color:var(--ink);
  font-family:"Inter",system-ui,-apple-system,"PingFang SC","Hiragino Sans GB","Microsoft YaHei",sans-serif;
  font-size:16px;line-height:1.8;-webkit-font-smoothing:antialiased;
}
body.nav-open{overflow:hidden}
img{max-width:100%;display:block}
a{color:inherit;text-decoration:none}
button{font:inherit;color:inherit}
h1,h2,h3,h4{margin:0;line-height:1.25;letter-spacing:-0.01em;font-weight:700}
h3{font-size:21px;font-weight:600}
p{margin:0}
ul,ol{margin:0;padding:0;list-style:none}
input,button{outline:none}
:focus-visible{outline:2px solid var(--accent);outline-offset:2px;border-radius:6px}

.container{max-width:var(--maxw);margin:0 auto;padding:0 32px}

/* ---------- 导航 ---------- */
.site-header{
  position:sticky;top:0;z-index:80;
  background:rgba(250,249,246,.94);
  backdrop-filter:saturate(180%) blur(10px);
  border-bottom:1px solid transparent;
  transition:border-color .25s ease,box-shadow .25s ease;
}
.site-header.is-scrolled{border-bottom-color:var(--line);box-shadow:0 1px 2px rgba(14,17,19,.06)}
.header-top{display:flex;align-items:center;gap:20px;min-height:var(--header-h)}
.brand{display:flex;align-items:center;gap:10px;flex:0 0 auto}
.brand-mark{
  width:38px;height:38px;border-radius:11px;background:var(--ink);color:#fff;
  display:grid;place-items:center;font-weight:700;font-size:17px;flex:0 0 auto;
}
.brand-text strong{display:block;font-size:15px;font-weight:700;letter-spacing:-0.01em;white-space:nowrap}
.brand-text em{display:block;font-style:normal;font-size:11.5px;color:var(--faint);letter-spacing:.06em}
.search{
  flex:1 1 280px;max-width:420px;margin-left:auto;display:flex;align-items:center;gap:8px;
  height:42px;padding:0 5px 0 14px;background:#fff;border:1px solid var(--line);
  border-radius:var(--r-input);transition:border-color .2s ease,box-shadow .2s ease;
}
.search i{color:var(--faint);font-size:14px}
.search input{flex:1;border:0;background:transparent;font-size:14px;color:var(--ink);min-width:0}
.search input::placeholder{color:var(--faint)}
.search:focus-within{border-color:var(--accent);box-shadow:0 0 0 3px rgba(228,87,46,.12)}
.search button{
  height:32px;padding:0 14px;border:0;border-radius:8px;background:var(--ink);color:#fff;
  font-size:13px;cursor:pointer;transition:background .2s ease;
}
.search button:hover{background:var(--accent)}
.btn{
  display:inline-flex;align-items:center;justify-content:center;gap:8px;
  min-height:44px;padding:0 24px;font-size:15px;font-weight:600;
  border-radius:var(--r-btn);cursor:pointer;border:1px solid transparent;
  transition:background .2s ease,color .2s ease,box-shadow .2s ease,transform .2s ease,border-color .2s ease;
}
.btn-primary{background:var(--accent);color:#fff;box-shadow:0 1px 2px rgba(228,87,46,.24)}
.btn-primary:hover{background:var(--accent-deep);transform:translateY(-1px);box-shadow:0 12px 26px rgba(228,87,46,.28)}
.btn-primary:active{transform:translateY(0);box-shadow:0 1px 2px rgba(228,87,46,.24)}
.btn-ghost{background:transparent;color:var(--ink);border-color:var(--ink)}
.btn-ghost:hover{background:var(--ink);color:#fff}
.header-cta{flex:0 0 auto;min-height:42px;padding:0 22px;font-size:14px}
.nav-toggle{
  display:none;width:44px;height:44px;border:1px solid var(--line);border-radius:10px;
  background:#fff;align-items:center;justify-content:center;cursor:pointer;
}
.nav-toggle span{position:relative;display:block;width:18px;height:2px;background:var(--ink);border-radius:2px;transition:background .2s}
.nav-toggle span::before,.nav-toggle span::after{
  content:"";position:absolute;left:0;width:18px;height:2px;background:var(--ink);border-radius:2px;transition:transform .25s ease,top .25s ease;
}
.nav-toggle span::before{top:-6px}
.nav-toggle span::after{top:6px}
body.nav-open .nav-toggle span{background:transparent}
body.nav-open .nav-toggle span::before{top:0;transform:rotate(45deg)}
body.nav-open .nav-toggle span::after{top:0;transform:rotate(-45deg)}

.tabs-wrap{border-top:1px solid var(--rule)}
.tabs{display:flex;align-items:center;gap:8px;padding:10px 32px;overflow-x:auto;scrollbar-width:none}
.tabs::-webkit-scrollbar{display:none}
.tab{
  flex:0 0 auto;padding:8px 18px;border-radius:999px;font-size:14px;color:var(--muted);
  border:1px solid transparent;transition:background .2s ease,color .2s ease,border-color .2s ease;white-space:nowrap;
}
.tab:hover{color:var(--ink);background:var(--warm)}
.tab.is-active{background:var(--accent);color:#fff;font-weight:600}
.tab.is-active:hover{background:var(--accent-deep);color:#fff}

/* ---------- 内页头图 ---------- */
.cat-hero{
  position:relative;color:#fff;min-height:264px;display:flex;align-items:flex-end;
  background-image:linear-gradient(120deg,rgba(14,17,19,.86),rgba(16,32,27,.62)),
    url("/assets/images/backpic/back-1.webp");
  background-size:cover;background-position:center;
}
.cat-hero-inner{padding-top:72px;padding-bottom:40px}
.badge-on-dark{
  display:inline-flex;align-items:center;gap:6px;padding:5px 12px;margin-bottom:16px;
  border-radius:999px;background:rgba(255,255,255,.14);border:1px solid rgba(255,255,255,.24);
  color:#fff;font-size:12.5px;font-weight:600;letter-spacing:.04em;
}
.cat-hero h1{font-size:clamp(28px,3.4vw,42px);letter-spacing:-0.02em;max-width:900px}
.cat-hero p{margin-top:14px;max-width:660px;font-size:16px;color:rgba(255,255,255,.76)}

.crumbs{display:flex;align-items:center;gap:10px;padding:18px 0;font-size:14px;color:var(--faint)}
.crumbs a{color:var(--faint);transition:color .2s ease}
.crumbs a:hover{color:var(--accent)}
.crumbs .sep{color:#c8c2b6}
.crumbs .current{color:var(--ink);font-weight:600}

/* ---------- 主体 ---------- */
.cat-main{padding:24px 0 96px}
.cat-grid{display:grid;grid-template-columns:248px minmax(0,1fr);gap:48px;align-items:start}

.toc{
  position:sticky;top:112px;background:#fff;border:1px solid var(--line);
  border-radius:var(--r-card);padding:20px;box-shadow:var(--sh-1);
}
.toc h2{font-size:12.5px;color:var(--faint);letter-spacing:.12em;margin-bottom:12px;font-weight:600}
.toc nav{display:flex;flex-direction:column;gap:2px}
.toc a{
  display:block;padding:9px 12px;border-radius:8px;font-size:14px;color:var(--muted);
  border-left:2px solid transparent;transition:background .2s ease,color .2s ease,border-color .2s ease;
}
.toc a:hover{background:var(--warm);color:var(--ink)}
.toc a.is-current{color:var(--accent);border-left-color:var(--accent);background:rgba(228,87,46,.07);font-weight:600}

.content > section{margin-bottom:72px}
.content > section:last-child{margin-bottom:0}
.block h2{font-size:clamp(24px,2.4vw,32px)}
.block h2 + .block-lead{margin-top:14px}
.block-lead{color:var(--muted);font-size:16px;max-width:720px}
.block h2::after{
  content:"";display:block;width:44px;height:3px;border-radius:2px;
  background:var(--accent);margin-top:14px;
}

.num-list{margin-top:28px}
.num-list li{display:flex;gap:18px;padding:20px 0;border-bottom:1px solid var(--rule)}
.num-list li:first-child{padding-top:8px}
.num-list li:last-child{border-bottom:0}
.num{
  flex:0 0 38px;height:38px;border-radius:999px;background:var(--warm);color:var(--ink);
  display:grid;place-items:center;font-weight:700;font-size:15px;font-variant-numeric:tabular-nums;
}
.num-list strong{display:block;font-size:16.5px;margin-bottom:4px}
.num-list p{font-size:15px;color:var(--muted)}

.split{display:grid;grid-template-columns:1fr 1fr;gap:44px;align-items:center;margin-top:28px}
.split img{width:100%;aspect-ratio:4/3;object-fit:cover;border-radius:var(--r-img);background:var(--warm)}
.split h3{margin-bottom:12px}
.split p{color:var(--muted);font-size:15.5px}
.split p + p{margin-top:12px}
.plain-list{margin-top:16px}
.plain-list li{position:relative;padding-left:20px;color:var(--muted);font-size:15.5px;margin-bottom:8px}
.plain-list li::before{
  content:"";position:absolute;left:0;top:12px;width:8px;height:8px;border-radius:2px;background:var(--accent);
}

.duo{display:grid;grid-template-columns:1fr 1fr;gap:24px;margin-top:28px}
.card{
  background:#fff;border:1px solid var(--line);border-radius:var(--r-card);
  box-shadow:var(--sh-1);overflow:hidden;
  transition:box-shadow .25s ease,border-color .25s ease;
}
.card:hover{box-shadow:var(--sh-2);border-color:#d7d1c6}
.card-media{overflow:hidden;background:var(--warm)}
.card-media img{width:100%;aspect-ratio:4/3;object-fit:cover;transition:transform .4s ease}
.card:hover .card-media img{transform:scale(1.03)}
.card-pad{padding:24px}
.card-pad h3{margin:12px 0 10px}
.card-pad p{color:var(--muted);font-size:15px}
.badge{
  display:inline-flex;align-items:center;gap:6px;padding:4px 11px;border-radius:999px;
  background:rgba(228,87,46,.10);color:var(--accent);font-size:12px;font-weight:600;
}
.badge-ink{background:var(--ink);color:#fff}
.text-link{
  display:inline-flex;align-items:center;gap:8px;margin-top:16px;font-size:14px;
  font-weight:600;color:var(--ink);transition:color .2s ease;
}
.text-link i{transition:transform .2s ease}
.text-link:hover{color:var(--accent)}
.text-link:hover i{transform:translateX(3px)}

.timeline{margin-top:32px;padding-left:34px;position:relative}
.timeline::before{content:"";position:absolute;left:10px;top:10px;bottom:10px;width:1px;background:var(--line)}
.tl-item{position:relative;padding-bottom:32px}
.tl-item:last-child{padding-bottom:0}
.tl-item::before{
  content:"";position:absolute;left:-34px;top:4px;width:21px;height:21px;border-radius:999px;
  background:#fff;border:2px solid var(--accent);
}
.tl-step{font-size:12.5px;letter-spacing:.12em;color:var(--accent);font-weight:700;font-variant-numeric:tabular-nums}
.tl-item h3{font-size:19px;margin:6px 0 6px}
.tl-item p{color:var(--muted);font-size:15px}

.specs{display:grid;grid-template-columns:1fr 1fr;gap:16px;margin-top:28px}
.spec{background:#fff;border:1px solid var(--line);border-radius:var(--r-card);padding:20px 22px;box-shadow:var(--sh-1)}
.spec span{display:block;font-size:13px;color:var(--faint);letter-spacing:.04em}
.spec strong{display:block;margin-top:6px;font-size:17px;font-variant-numeric:tabular-nums}

.notice{
  display:flex;gap:16px;padding:20px 22px;border-radius:var(--r-card);
  background:var(--warm);border-left:3px solid var(--accent);margin-top:16px;
}
.notice:first-of-type{margin-top:28px}
.notice i{color:var(--accent);font-size:18px;margin-top:4px}
.notice strong{display:block;font-size:16.5px;margin-bottom:4px}
.notice p{color:var(--muted);font-size:15px}

.cta-band{
  background:var(--deep);color:#fff;border-radius:18px;padding:44px 48px;
  display:flex;align-items:center;justify-content:space-between;gap:36px;
}
.cta-band h2{color:#fff;font-size:clamp(24px,2.6vw,34px);max-width:560px}
.cta-band h2::after{display:none}
.cta-band p{margin-top:12px;color:rgba(255,255,255,.68);font-size:14.5px}
.cta-band .btn{flex:0 0 auto}

.faq{margin-top:20px;border-top:1px solid var(--rule)}
.faq-item{border-bottom:1px solid var(--rule)}
.faq-q{
  width:100%;display:flex;align-items:center;justify-content:space-between;gap:20px;
  padding:22px 0;background:none;border:0;cursor:pointer;text-align:left;
  font-size:16px;font-weight:600;color:var(--ink);transition:color .2s ease;min-height:44px;
}
.faq-q:hover{color:var(--accent)}
.faq-q i{flex:0 0 auto;color:var(--accent);font-size:14px;transition:transform .3s ease}
.faq-item.is-open .faq-q i{transform:rotate(45deg)}
.faq-a{max-height:0;overflow:hidden;transition:max-height .32s ease}
.faq-item.is-open .faq-a{max-height:320px}
.faq-a p{padding-bottom:22px;color:var(--muted);font-size:15px;max-width:760px}

/* ---------- 页脚 ---------- */
.site-footer{background:var(--deep);color:rgba(255,255,255,.72);padding-top:72px}
.footer-grid{display:grid;grid-template-columns:1.5fr 1fr 1fr 1.3fr;gap:40px;padding-bottom:48px}
.footer-brand{display:flex;align-items:center;gap:10px;margin-bottom:16px}
.footer-brand .brand-mark{background:var(--accent);color:#fff}
.footer-brand strong{color:#fff;font-size:16px;letter-spacing:-0.01em}
.site-footer p{font-size:14px;color:rgba(255,255,255,.62);max-width:340px;line-height:1.8}
.site-footer h4{font-size:14px;color:#fff;margin-bottom:16px;letter-spacing:.06em;font-weight:600}
.footer-links a{display:block;padding:6px 0;font-size:14px;color:rgba(255,255,255,.7);transition:color .2s ease}
.footer-links a:hover{color:#fff;text-decoration:underline;text-underline-offset:4px;text-decoration-color:var(--accent)}
.footer-contact li{display:flex;gap:10px;align-items:flex-start;font-size:14px;color:rgba(255,255,255,.7);padding:6px 0}
.footer-contact i{color:var(--accent);margin-top:7px;font-size:13px}
.footer-bottom{
  border-top:1px solid rgba(255,255,255,.12);padding:20px 0;display:flex;
  justify-content:space-between;gap:16px;flex-wrap:wrap;font-size:13px;color:rgba(255,255,255,.5);
}

/* ---------- 响应式 ---------- */
@media (max-width:1199px){
  .container{padding:0 28px}
  .tabs{padding:10px 28px}
  .cat-grid{gap:36px;grid-template-columns:220px minmax(0,1fr)}
}
@media (max-width:1023px){
  .search,.header-cta{display:none}
  .nav-toggle{display:inline-flex;margin-left:auto}
  .content > section{margin-bottom:64px}
  .tabs-wrap{
    position:fixed;left:0;right:0;top:var(--header-h);background:var(--paper);
    border-bottom:1px solid var(--line);box-shadow:var(--sh-2);
    opacity:0;transform:translateY(-10px);pointer-events:none;
    transition:opacity .25s ease,transform .25s ease;
    max-height:calc(100vh - var(--header-h));overflow-y:auto;
  }
  body.nav-open .tabs-wrap{opacity:1;transform:none;pointer-events:auto}
  .tabs{flex-direction:column;align-items:stretch;gap:4px;padding:12px 20px 20px;overflow:visible}
  .tab{padding:13px 16px;border-radius:10px;font-size:15px}
  .cat-grid{grid-template-columns:minmax(0,1fr);gap:28px}
  .toc{
    position:static;padding:12px;display:flex;gap:8px;overflow-x:auto;
    scrollbar-width:none;border-radius:12px;
  }
  .toc::-webkit-scrollbar{display:none}
  .toc h2{display:none}
  .toc nav{flex-direction:row;gap:8px}
  .toc a{
    white-space:nowrap;border:1px solid var(--line);border-radius:999px;padding:8px 14px;font-size:13.5px;
  }
  .toc a.is-current{border-left:1px solid var(--accent);border-color:var(--accent)}
  .cat-hero{min-height:230px}
  .cat-hero-inner{padding-top:56px;padding-bottom:32px}
  .cta-band{flex-direction:column;align-items:flex-start;padding:36px 32px;gap:24px}
  .footer-grid{grid-template-columns:1fr 1fr;gap:32px}
}
@media (max-width:767px){
  :root{--header-h:66px}
  .container{padding:0 20px}
  .tabs{padding:12px 20px 20px}
  .brand-text strong{font-size:14px}
  .brand-text em{display:none}
  .brand-mark{width:34px;height:34px;font-size:15px;border-radius:10px}
  .cat-main{padding:16px 0 72px}
  .content > section{margin-bottom:56px}
  .split{grid-template-columns:1fr;gap:24px}
  .split .split-media{order:-1}
  .duo{grid-template-columns:1fr}
  .specs{grid-template-columns:1fr}
  .cta-band{padding:30px 24px;border-radius:14px}
  .footer-grid{grid-template-columns:1fr;gap:28px;padding-bottom:36px}
  .site-footer{padding-top:56px}
}
@media (max-width:520px){
  body{font-size:15.5px}
  .cat-hero{min-height:210px}
  .cat-hero p{font-size:14.5px}
  .card-pad{padding:20px}
  .num-list li{gap:14px;padding:16px 0}
  .num{flex:0 0 32px;height:32px;font-size:13.5px}
  .timeline{padding-left:28px}
  .tl-item::before{left:-28px;width:17px;height:17px}
  .timeline::before{left:8px}
  .faq-q{font-size:15px;padding:18px 0}
  .btn{width:100%}
  .cta-band .btn{width:100%}
}

@media (prefers-reduced-motion:reduce){
  *{animation:none !important;transition:none !important}
  html{scroll-behavior:auto}
  .content > section{opacity:1 !important;transform:none !important}
}