/* roulang page: index */
:root{
  --brand-700:#0C3E70;
  --brand-600:#14589E;
  --brand-500:#1E6FC4;
  --brand-100:#E7F0FB;
  --brand-50:#F3F8FE;
  --accent:#12A594;
  --accent-soft:#E3F5F2;
  --warm:#F97316;
  --bg:#F5F7FB;
  --surface:#FFFFFF;
  --surface-2:#EEF2F8;
  --ink:#0F1B2A;
  --ink-2:#47566B;
  --ink-3:#7C8AA0;
  --line:#E3E9F2;
  --r-card:16px;
  --r-media:12px;
  --r-pill:999px;
  --shadow-1:0 2px 8px rgba(16,42,78,.06);
  --shadow-2:0 14px 30px -14px rgba(16,42,78,.20);
  --container:1200px;
  --sec:96px;
}

*,*::before,*::after{box-sizing:border-box;}
html{-webkit-text-size-adjust:100%;scroll-behavior:smooth;}
body{
  margin:0;
  background:var(--bg);
  color:var(--ink);
  font-family:-apple-system,"PingFang SC","Microsoft YaHei","Noto Sans SC",BlinkMacSystemFont,"Segoe UI",sans-serif;
  font-size:16px;
  line-height:1.75;
  -webkit-font-smoothing:antialiased;
}
img{max-width:100%;display:block;}
a{color:var(--brand-600);text-decoration:none;transition:color .18s ease;}
a:hover{color:var(--brand-700);}
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,p{margin:0;}
h1{font-size:clamp(28px,4.4vw,46px);font-weight:700;line-height:1.22;}
h2{font-size:clamp(22px,3vw,32px);font-weight:700;line-height:1.3;}
h3{font-size:20px;font-weight:600;line-height:1.45;}
.num{font-variant-numeric:tabular-nums;}
:focus-visible{outline:2px solid var(--brand-500);outline-offset:2px;border-radius:4px;}

.container{width:100%;max-width:var(--container);margin:0 auto;padding:0 24px;}
.section{padding:var(--sec) 0;}
.section--tight{padding:calc(var(--sec) * .72) 0;}
.section-head{display:flex;align-items:flex-end;justify-content:space-between;gap:24px;margin-bottom:24px;}
.section-head p{color:var(--ink-2);font-size:15px;margin-top:8px;max-width:640px;}
.eyebrow{
  display:inline-flex;align-items:center;gap:8px;
  font-size:13px;font-weight:600;color:var(--brand-600);
  background:var(--brand-50);border-radius:var(--r-pill);
  padding:6px 14px;margin-bottom:14px;
}
.eyebrow::before{content:"";width:6px;height:6px;border-radius:50%;background:var(--accent);}

/* 按钮体系 */
.btn{
  display:inline-flex;align-items:center;justify-content:center;gap:8px;
  height:46px;padding:0 24px;border-radius:var(--r-pill);
  font-size:15px;font-weight:600;line-height:1;
  transition:transform .18s ease,box-shadow .18s ease,background-color .18s ease,border-color .18s ease,color .18s ease;
  white-space:nowrap;
}
.btn:active{transform:scale(.98);}
.btn-primary{background:var(--brand-600);color:#fff;box-shadow:var(--shadow-1);}
.btn-primary:hover{background:var(--brand-700);color:#fff;transform:translateY(-1px);box-shadow:var(--shadow-2);}
.btn-secondary{background:var(--surface);color:var(--ink);border:1px solid var(--line);}
.btn-secondary:hover{border-color:var(--brand-500);color:var(--brand-600);transform:translateY(-1px);}
.btn-ghost{background:transparent;color:var(--brand-600);}
.btn-ghost:hover{background:var(--brand-50);}
.btn-sm{height:40px;padding:0 18px;font-size:14px;}
.text-link{display:inline-flex;align-items:center;gap:6px;font-size:15px;font-weight:600;color:var(--brand-600);}
.text-link svg{transition:transform .18s ease;}
.text-link:hover svg{transform:translateX(4px);}

/* 徽章 */
.badge{
  display:inline-flex;align-items:center;
  font-size:12px;font-weight:600;line-height:1;
  padding:6px 10px;border-radius:var(--r-pill);
  background:var(--brand-50);color:var(--brand-600);
}
.badge-accent{background:var(--accent-soft);color:var(--accent);}
.badge-warm{background:#FFF3E8;color:var(--warm);}

/* 导航 */
.site-header{
  position:sticky;top:0;z-index:60;
  background:rgba(255,255,255,.94);
  backdrop-filter:saturate(150%) blur(6px);
  border-bottom:1px solid transparent;
  transition:border-color .2s ease,box-shadow .2s ease;
}
.site-header.is-stuck{border-bottom-color:var(--line);box-shadow:0 4px 18px -12px rgba(16,42,78,.32);}
.nav-wrap{display:flex;align-items:center;gap:24px;height:68px;}
.brand{display:inline-flex;align-items:center;gap:10px;flex-shrink:0;}
.brand-mark{
  width:34px;height:34px;border-radius:10px;
  background:linear-gradient(160deg,var(--brand-500),var(--brand-700));
  display:grid;place-items:center;flex-shrink:0;
}
.brand-mark svg{width:20px;height:20px;}
.brand-name{font-size:17px;font-weight:700;color:var(--ink);letter-spacing:.2px;}
.nav-main{display:flex;align-items:center;gap:4px;margin-left:8px;}
.nav-link{
  position:relative;display:inline-block;
  padding:10px 14px;font-size:15px;font-weight:500;color:var(--ink-2);
  border-radius:8px;transition:color .18s ease;
}
.nav-link::after{
  content:"";position:absolute;left:50%;right:50%;bottom:4px;height:2px;
  background:var(--brand-600);border-radius:2px;
  transition:left .18s ease,right .18s ease;
}
.nav-link:hover{color:var(--brand-600);}
.nav-link:hover::after{left:14px;right:14px;}
.nav-link.is-active{color:var(--brand-600);font-weight:600;}
.nav-link.is-active::after{left:14px;right:14px;}
.nav-actions{display:flex;align-items:center;gap:12px;margin-left:auto;}
.nav-search{
  display:flex;align-items:center;gap:8px;
  height:42px;width:240px;padding:0 16px;
  background:var(--surface-2);border:1px solid transparent;border-radius:var(--r-pill);
  transition:border-color .18s ease,background-color .18s ease;
}
.nav-search:focus-within{background:var(--surface);border-color:var(--brand-500);}
.nav-search svg{flex-shrink:0;color:var(--ink-3);}
.nav-search input{
  border:none;background:transparent;outline:none;width:100%;
  font-size:14px;
}
.nav-search input::placeholder{color:var(--ink-3);}
.search-toggle{display:none;width:42px;height:42px;border-radius:var(--r-pill);background:var(--surface-2);align-items:center;justify-content:center;color:var(--ink-2);}
.hamburger{display:none;width:42px;height:42px;border-radius:12px;background:var(--surface-2);align-items:center;justify-content:center;}
.hamburger span{display:block;width:18px;height:2px;background:var(--ink);border-radius:2px;position:relative;}
.hamburger span::before,.hamburger span::after{content:"";position:absolute;left:0;width:18px;height:2px;background:var(--ink);border-radius:2px;}
.hamburger span::before{top:-6px;}
.hamburger span::after{top:6px;}

.drawer-mask{
  position:fixed;inset:0;background:rgba(15,27,42,.42);
  opacity:0;visibility:hidden;transition:opacity .24s ease,visibility .24s ease;z-index:80;
}
.drawer-mask.is-open{opacity:1;visibility:visible;}
.drawer{
  position:fixed;top:0;right:0;bottom:0;width:min(320px,86vw);
  background:var(--surface);z-index:90;padding:24px 22px;
  transform:translateX(100%);transition:transform .26s ease;
  display:flex;flex-direction:column;gap:8px;overflow-y:auto;
}
.drawer.is-open{transform:translateX(0);}
.drawer h4{font-size:13px;color:var(--ink-3);font-weight:600;margin:8px 0 4px;}
.drawer a.drawer-link{
  display:block;padding:13px 14px;border-radius:12px;
  font-size:16px;font-weight:500;color:var(--ink);
}
.drawer a.drawer-link:hover{background:var(--brand-50);color:var(--brand-600);}
.drawer a.drawer-link.is-active{background:var(--brand-50);color:var(--brand-600);font-weight:600;}
.drawer-actions{margin-top:auto;display:grid;gap:10px;padding-top:20px;border-top:1px solid var(--line);}

/* Hero */
.hero{position:relative;overflow:hidden;padding:64px 0 88px;background:
  radial-gradient(900px 420px at 12% -10%,var(--brand-50),transparent 68%),
  linear-gradient(180deg,#FFFFFF 0%,var(--bg) 100%);}
.hero-grid{display:grid;grid-template-columns:minmax(0,1fr) 360px;gap:56px;align-items:center;}
.hero-copy{max-width:560px;}
.hero h1{margin-bottom:18px;}
.hero h1 em{font-style:normal;color:var(--brand-600);}
.hero-sub{font-size:17px;line-height:1.8;color:var(--ink-2);margin-bottom:28px;max-width:480px;}
.hero-actions{display:flex;flex-wrap:wrap;gap:14px;margin-bottom:36px;}
.hero-stats{display:flex;flex-wrap:wrap;gap:36px;border-top:1px solid var(--line);padding-top:24px;}
.hero-stat strong{display:block;font-size:26px;font-weight:700;color:var(--brand-700);font-variant-numeric:tabular-nums;line-height:1.2;}
.hero-stat span{font-size:13px;color:var(--ink-3);}
.hero-visual{position:relative;display:flex;justify-content:flex-end;}
.phone-card{
  position:relative;width:100%;max-width:320px;aspect-ratio:9/16;
  border-radius:20px;overflow:hidden;box-shadow:var(--shadow-2);
  transform:rotate(2deg) translateY(0);
  background:var(--surface-2);
  transition:transform .3s ease;
}
.phone-card:hover{transform:rotate(0deg) translateY(-6px);}
.phone-card img{width:100%;height:100%;object-fit:cover;}
.phone-card::after{
  content:"";position:absolute;inset:0;
  background:linear-gradient(180deg,rgba(15,27,42,0) 38%,rgba(15,27,42,.72) 100%);
}
.phone-tag{position:absolute;top:14px;left:14px;z-index:2;}
.phone-play{
  position:absolute;top:50%;left:50%;transform:translate(-50%,-50%);
  width:56px;height:56px;border-radius:50%;
  background:rgba(255,255,255,.9);display:grid;place-items:center;z-index:2;
  box-shadow:0 8px 24px -8px rgba(15,27,42,.5);
  transition:transform .2s ease;
}
.phone-play:hover{transform:translate(-50%,-50%) scale(1.06);}
.phone-play svg{width:20px;height:20px;color:var(--brand-600);margin-left:3px;}
.phone-time{
  position:absolute;right:14px;bottom:14px;z-index:2;
  font-size:12px;font-weight:600;color:#fff;
  background:rgba(15,27,42,.62);padding:5px 10px;border-radius:var(--r-pill);
  font-variant-numeric:tabular-nums;
}
.phone-caption{position:absolute;left:16px;right:80px;bottom:14px;z-index:2;color:#fff;font-size:15px;font-weight:600;line-height:1.4;}

/* 横滑区 */
.rail-wrap{position:relative;}
.rail{
  display:flex;gap:18px;overflow-x:auto;padding:6px 2px 18px;
  scroll-snap-type:x mandatory;
  scrollbar-width:none;
}
.rail::-webkit-scrollbar{display:none;}
.rail-card{
  scroll-snap-align:start;flex:0 0 190px;
  position:relative;border-radius:var(--r-card);overflow:hidden;
  background:var(--surface);box-shadow:var(--shadow-1);
  transition:transform .22s ease,box-shadow .22s ease;
}
.rail-card:hover{transform:translateY(-3px);box-shadow:var(--shadow-2);}
.rail-thumb{position:relative;aspect-ratio:9/16;overflow:hidden;background:var(--surface-2);}
.rail-thumb img{width:100%;height:100%;object-fit:cover;transition:transform .4s ease;}
.rail-card:hover .rail-thumb img{transform:scale(1.04);}
.rail-thumb::after{content:"";position:absolute;inset:0;background:linear-gradient(180deg,transparent 45%,rgba(15,27,42,.7) 100%);}
.rail-play{
  position:absolute;top:50%;left:50%;transform:translate(-50%,-50%) scale(.86);
  width:44px;height:44px;border-radius:50%;background:rgba(255,255,255,.9);
  display:grid;place-items:center;opacity:0;transition:opacity .2s ease,transform .2s ease;z-index:2;
}
.rail-card:hover .rail-play{opacity:1;transform:translate(-50%,-50%) scale(1);}
.rail-play svg{width:16px;height:16px;color:var(--brand-600);margin-left:2px;}
.rail-time{position:absolute;right:10px;bottom:10px;z-index:2;font-size:11px;font-weight:600;color:#fff;background:rgba(15,27,42,.62);padding:4px 8px;border-radius:var(--r-pill);font-variant-numeric:tabular-nums;}
.rail-title{position:absolute;left:12px;right:12px;bottom:12px;z-index:2;color:#fff;font-size:14px;font-weight:600;line-height:1.4;display:-webkit-box;-webkit-line-clamp:2;-webkit-box-orient:vertical;overflow:hidden;}
.rail-foot{padding:12px 14px 16px;}
.rail-foot h3{font-size:15px;line-height:1.4;display:-webkit-box;-webkit-line-clamp:2;-webkit-box-orient:vertical;overflow:hidden;margin-bottom:6px;}
.rail-foot p{font-size:13px;color:var(--ink-3);}
.rail-arrow{
  position:absolute;top:calc(50% - 40px);transform:translateY(-50%);
  width:42px;height:42px;border-radius:50%;background:var(--surface);
  box-shadow:var(--shadow-2);display:grid;place-items:center;color:var(--ink-2);
  z-index:5;transition:color .18s ease,transform .18s ease;
}
.rail-arrow:hover{color:var(--brand-600);}
.rail-arrow.prev{left:-10px;}
.rail-arrow.next{right:-10px;}
.rail-arrow svg{width:18px;height:18px;}

/* 种草清单 */
.pick-grid{display:grid;grid-template-columns:1.35fr 1fr;gap:48px;align-items:start;}
.pick-list{border-top:1px solid var(--line);}
.pick-item{
  display:grid;grid-template-columns:64px minmax(0,1fr) 48px;gap:16px;
  align-items:center;padding:20px 4px;border-bottom:1px solid var(--line);
  transition:background-color .2s ease,padding-left .2s ease;
}
.pick-item:hover{background:var(--surface);padding-left:12px;}
.pick-num{font-size:32px;font-weight:700;color:var(--brand-600);opacity:.6;line-height:1;font-variant-numeric:tabular-nums;}
.pick-body h3{font-size:17px;margin-bottom:4px;}
.pick-body p{font-size:14px;color:var(--ink-2);line-height:1.65;}
.pick-check{
  width:26px;height:26px;border-radius:50%;border:2px solid var(--line);
  display:grid;place-items:center;justify-self:end;transition:border-color .2s ease,background-color .2s ease;
}
.pick-check::after{content:"";width:8px;height:8px;border-radius:50%;background:var(--line);transition:background-color .2s ease;}
.pick-item:hover .pick-check{border-color:var(--brand-500);background:var(--brand-50);}
.pick-item:hover .pick-check::after{background:var(--brand-500);}
.pick-media{position:relative;border-radius:var(--r-card);overflow:hidden;box-shadow:var(--shadow-1);margin-top:44px;}
.pick-media img{width:100%;aspect-ratio:4/5;object-fit:cover;}
.pick-media figcaption{
  position:absolute;left:0;right:0;bottom:0;padding:20px;
  background:linear-gradient(180deg,transparent,rgba(15,27,42,.78));
  color:#fff;font-size:14px;line-height:1.6;
}
.pick-media figcaption strong{display:block;font-size:16px;margin-bottom:4px;}

/* 资讯列表 */
.post-grid{display:grid;grid-template-columns:repeat(3,minmax(0,1fr));gap:24px;}
.post-card{
  background:var(--surface);border-radius:var(--r-card);
  border:1px solid var(--line);overflow:hidden;
  transition:transform .22s ease,box-shadow .22s ease,border-color .22s ease;
}
.post-card:hover{transform:translateY(-3px);box-shadow:var(--shadow-2);border-color:transparent;}
.post-link{display:flex;flex-direction:column;height:100%;color:inherit;}
.post-cover{aspect-ratio:16/10;overflow:hidden;background:var(--surface-2);}
.post-cover img{width:100%;height:100%;object-fit:cover;transition:transform .4s ease;}
.post-card:hover .post-cover img{transform:scale(1.04);}
.post-body{padding:20px 22px 22px;display:flex;flex-direction:column;flex:1;}
.post-meta-top{display:flex;align-items:center;justify-content:space-between;gap:12px;margin-bottom:12px;}
.post-date{font-size:13px;color:var(--ink-3);font-variant-numeric:tabular-nums;}
.post-title{
  font-size:18px;font-weight:600;line-height:1.45;margin-bottom:10px;
  display:-webkit-box;-webkit-line-clamp:2;-webkit-box-orient:vertical;overflow:hidden;
  transition:color .2s ease;
}
.post-card:hover .post-title{color:var(--brand-600);}
.post-excerpt{
  font-size:14px;color:var(--ink-2);line-height:1.7;margin-bottom:18px;
  display:-webkit-box;-webkit-line-clamp:3;-webkit-box-orient:vertical;overflow:hidden;
}
.post-foot{margin-top:auto;display:flex;align-items:center;justify-content:space-between;gap:12px;padding-top:14px;border-top:1px solid var(--line);}
.post-foot .read{font-size:14px;font-weight:600;color:var(--brand-600);display:inline-flex;align-items:center;gap:6px;}
.post-foot .read svg{transition:transform .2s ease;}
.post-card:hover .post-foot .read svg{transform:translateX(4px);}
.empty-state{
  border:1px dashed var(--line);border-radius:var(--r-card);
  min-height:260px;display:flex;flex-direction:column;align-items:center;justify-content:center;
  gap:12px;text-align:center;padding:40px 24px;background:var(--surface);
}
.empty-state svg{width:56px;height:56px;color:var(--ink-3);}
.empty-state p{color:var(--ink-2);font-size:15px;}

/* 口碑条 */
.voice-card{
  flex:0 0 280px;scroll-snap-align:start;
  background:var(--surface);border:1px solid var(--line);border-radius:var(--r-card);
  padding:22px;box-shadow:var(--shadow-1);
  transition:transform .22s ease,box-shadow .22s ease;
}
.voice-card:hover{transform:translateY(-3px);box-shadow:var(--shadow-2);}
.voice-top{display:flex;align-items:center;gap:12px;margin-bottom:14px;}
.avatar{
  width:40px;height:40px;border-radius:50%;background:var(--brand-100);color:var(--brand-700);
  display:grid;place-items:center;font-weight:700;font-size:15px;flex-shrink:0;
}
.voice-name{font-size:15px;font-weight:600;line-height:1.3;}
.voice-role{font-size:12px;color:var(--ink-3);}
.stars{display:flex;gap:3px;margin-bottom:10px;}
.stars svg{width:14px;height:14px;color:var(--warm);}
.voice-card p{font-size:14px;color:var(--ink-2);line-height:1.7;display:-webkit-box;-webkit-line-clamp:3;-webkit-box-orient:vertical;overflow:hidden;}

/* 分类双入口 */
.cat-grid{display:grid;grid-template-columns:1.5fr 1fr;gap:24px;align-items:stretch;}
.cat-card{
  position:relative;border-radius:var(--r-card);overflow:hidden;
  min-height:300px;display:flex;flex-direction:column;justify-content:flex-end;
  padding:32px;color:#fff;box-shadow:var(--shadow-1);
  transition:transform .22s ease,box-shadow .22s ease;
}
.cat-card:hover{transform:translateY(-3px);box-shadow:var(--shadow-2);color:#fff;}
.cat-card img{position:absolute;inset:0;width:100%;height:100%;object-fit:cover;z-index:0;}
.cat-card::after{content:"";position:absolute;inset:0;background:linear-gradient(180deg,rgba(12,62,112,.28),rgba(12,62,112,.78));z-index:1;}
.cat-card .cat-inner{position:relative;z-index:2;}
.cat-card h3{color:#fff;font-size:22px;margin-bottom:10px;}
.cat-card p{color:rgba(255,255,255,.86);font-size:14px;line-height:1.7;max-width:420px;margin-bottom:16px;}
.cat-card .badge{background:rgba(255,255,255,.18);color:#fff;margin-bottom:14px;}
.cat-card--plain{
  background:var(--surface);border:1px solid var(--line);color:var(--ink);
  min-height:300px;justify-content:space-between;
}
.cat-card--plain::after{display:none;}
.cat-card--plain:hover{color:var(--ink);border-color:var(--brand-500);}
.cat-card--plain h3{color:var(--ink);font-size:20px;}
.cat-card--plain p{color:var(--ink-2);}
.cat-card--plain .badge{background:var(--accent-soft);color:var(--accent);}
.cat-icon{width:44px;height:44px;border-radius:12px;background:var(--brand-50);display:grid;place-items:center;color:var(--brand-600);margin-bottom:auto;}

/* FAQ */
.faq-list{display:grid;gap:12px;max-width:920px;}
.faq-item{
  background:var(--surface);border:1px solid var(--line);border-radius:var(--r-card);
  overflow:hidden;transition:border-color .2s ease,box-shadow .2s ease;
}
.faq-item[open]{border-color:var(--brand-500);box-shadow:var(--shadow-1);}
.faq-item summary{
  list-style:none;cursor:pointer;
  min-height:56px;display:flex;align-items:center;justify-content:space-between;gap:20px;
  padding:16px 22px;font-size:16px;font-weight:600;color:var(--ink);
}
.faq-item summary::-webkit-details-marker{display:none;}
.faq-icon{position:relative;width:16px;height:16px;flex-shrink:0;}
.faq-icon::before,.faq-icon::after{content:"";position:absolute;background:var(--brand-600);border-radius:2px;transition:transform .2s ease,opacity .2s ease;}
.faq-icon::before{left:0;top:7px;width:16px;height:2px;}
.faq-icon::after{left:7px;top:0;width:2px;height:16px;}
.faq-item[open] .faq-icon::after{transform:rotate(90deg);opacity:0;}
.faq-body{padding:0 22px 20px;color:var(--ink-2);font-size:15px;line-height:1.8;}

/* CTA 带 */
.cta-band{
  background:linear-gradient(150deg,var(--brand-50),#FFFFFF 62%);
  border:1px solid var(--line);border-radius:24px;
  padding:56px 48px;display:flex;align-items:center;justify-content:space-between;gap:40px;
  flex-wrap:wrap;
}
.cta-band h2{max-width:560px;margin-bottom:10px;}
.cta-band p{color:var(--ink-2);font-size:15px;max-width:560px;}
.cta-actions{display:flex;gap:14px;flex-wrap:wrap;}

/* 页脚 */
.site-footer{background:var(--ink);color:#fff;margin-top:0;padding:64px 0 0;}
.footer-grid{display:grid;grid-template-columns:1.6fr 1fr 1fr 1.2fr;gap:32px;padding-bottom:44px;}
.footer-brand{display:flex;align-items:center;gap:10px;margin-bottom:16px;}
.footer-brand .brand-mark{background:rgba(255,255,255,.12);}
.footer-brand span{font-size:16px;font-weight:700;color:#fff;}
.footer-about{color:rgba(255,255,255,.66);font-size:14px;line-height:1.8;max-width:320px;}
.footer-col h4{font-size:14px;font-weight:600;color:#fff;margin-bottom:16px;}
.footer-col a{display:block;color:rgba(255,255,255,.66);font-size:14px;padding:6px 0;transition:color .18s ease;}
.footer-col a:hover{color:#fff;}
.footer-col p{color:rgba(255,255,255,.66);font-size:14px;line-height:1.8;padding:6px 0;}
.footer-bottom{
  border-top:1px solid rgba(255,255,255,.12);
  padding:22px 0;display:flex;align-items:center;justify-content:space-between;gap:16px;flex-wrap:wrap;
}
.footer-bottom p{color:rgba(255,255,255,.5);font-size:13px;}
.footer-bottom .footer-links{display:flex;gap:20px;}
.footer-bottom .footer-links a{color:rgba(255,255,255,.5);font-size:13px;}
.footer-bottom .footer-links a:hover{color:#fff;}

/* 移动端悬浮 CTA */
.mobile-cta{
  display:none;position:fixed;left:0;right:0;bottom:0;z-index:70;
  background:rgba(255,255,255,.97);border-top:1px solid var(--line);
  padding:12px 16px calc(12px + env(safe-area-inset-bottom));
  align-items:center;gap:12px;box-shadow:0 -6px 20px -14px rgba(16,42,78,.4);
}
.mobile-cta .mc-text{font-size:13px;color:var(--ink-2);line-height:1.4;}
.mobile-cta .btn{flex-shrink:0;}

/* 响应式 */
@media (max-width:1279px){
  :root{--container:1100px;}
}
@media (max-width:1023px){
  :root{--sec:72px;}
  .nav-main{display:none;}
  .nav-search{display:none;}
  .search-toggle{display:flex;}
  .hamburger{display:flex;}
  .hero-grid{grid-template-columns:1fr;gap:44px;}
  .hero-copy{max-width:100%;}
  .hero-visual{justify-content:center;}
  .phone-card{transform:none;max-width:280px;}
  .phone-card:hover{transform:translateY(-6px);}
  .pick-grid{grid-template-columns:1fr;gap:36px;}
  .pick-media{margin-top:0;}
  .post-grid{grid-template-columns:repeat(2,minmax(0,1fr));}
  .cat-grid{grid-template-columns:1fr;}
  .rail-arrow{display:none;}
  .footer-grid{grid-template-columns:1fr 1fr;}
  .cta-band{padding:40px 28px;}
}
@media (max-width:767px){
  :root{--sec:56px;}
  body{padding-bottom:84px;font-size:15px;line-height:1.8;}
  .container{padding:0 16px;}
  .section-head{flex-direction:column;align-items:flex-start;gap:12px;}
  .hero{padding:40px 0 56px;}
  .hero-stats{gap:24px;}
  .hero-stat strong{font-size:22px;}
  .hero-actions .btn{flex:1 1 auto;}
  .post-grid{grid-template-columns:1fr;}
  .pick-item{grid-template-columns:48px minmax(0,1fr) 32px;gap:12px;padding:18px 0;}
  .pick-num{font-size:26px;}
  .voice-card{flex:0 0 250px;}
  .footer-grid{grid-template-columns:1fr 1fr;gap:24px;}
  .footer-about{max-width:100%;}
  .footer-bottom{flex-direction:column;align-items:flex-start;gap:10px;}
  .mobile-cta{display:flex;}
  .cta-band{border-radius:18px;padding:32px 20px;}
  .cta-actions{width:100%;}
  .cta-actions .btn{flex:1 1 auto;}
}
@media (max-width:479px){
  .brand-name{font-size:15px;}
  .hero-stats{flex-direction:column;gap:16px;}
  .footer-grid{grid-template-columns:1fr;}
  .rail-card{flex:0 0 165px;}
}
@media (prefers-reduced-motion:reduce){
  *{transition:none !important;animation:none !important;}
  html{scroll-behavior:auto;}
}

/* roulang page: category1 */
:root{
  --brand-700:#0C3E70;
  --brand-600:#14589E;
  --brand-500:#1E6FC4;
  --brand-100:#E7F0FB;
  --brand-50:#F3F8FE;
  --accent:#12A594;
  --accent-soft:#E3F5F2;
  --warm:#F97316;
  --bg:#F5F7FB;
  --surface:#FFFFFF;
  --surface-2:#EEF2F8;
  --ink:#0F1B2A;
  --ink-2:#47566B;
  --ink-3:#7C8AA0;
  --line:#E3E9F2;
  --shadow-1:0 2px 8px rgba(16,42,78,.06);
  --shadow-2:0 14px 30px -14px rgba(16,42,78,.20);
  --r-card:16px;
  --r-media:12px;
  --r-pill:999px;
  --r-hero:20px;
  --sp-section:96px;
  --container:1200px;
}
*,*::before,*::after{box-sizing:border-box;}
html{-webkit-text-size-adjust:100%;}
body{
  margin:0;
  font-family:-apple-system,BlinkMacSystemFont,"PingFang SC","Microsoft YaHei","Noto Sans SC",sans-serif;
  font-size:16px;
  line-height:1.75;
  color:var(--ink);
  background:var(--bg);
  padding-bottom:0;
}
img{max-width:100%;display:block;border-style:none;}
a{color:var(--brand-600);text-decoration:none;transition:color .18s ease;}
a:hover{color:var(--brand-700);}
button{font:inherit;color:inherit;cursor:pointer;border:0;background:none;}
input{font:inherit;}
h1,h2,h3,h4,p,ul,ol,figure{margin:0;}
ul,ol{padding:0;list-style:none;}
:focus-visible{outline:2px solid var(--brand-500);outline-offset:2px;border-radius:4px;}
.num{font-variant-numeric:tabular-nums;}

.container{width:100%;max-width:var(--container);margin:0 auto;padding:0 24px;}
.section{padding:var(--sp-section) 0;}
.section-tight{padding:64px 0;}
.section-head{display:flex;align-items:flex-end;justify-content:space-between;gap:24px;margin-bottom:24px;flex-wrap:wrap;}
.section-head h2{font-size:clamp(22px,3vw,32px);font-weight:700;line-height:1.3;letter-spacing:0;color:var(--ink);}
.section-head p{color:var(--ink-2);font-size:15px;max-width:640px;margin-top:8px;}
.eyebrow{display:inline-flex;align-items:center;gap:8px;font-size:13px;font-weight:600;letter-spacing:.06em;color:var(--brand-600);text-transform:uppercase;}
.eyebrow::before{content:"";width:24px;height:2px;background:var(--accent);border-radius:2px;}
.hairline{position:relative;height:1px;background:var(--line);margin:0;overflow:visible;}
.hairline::after{content:"";position:absolute;left:0;top:0;width:48px;height:1px;background:var(--brand-500);}

/* ---------- Header ---------- */
.site-header{
  position:sticky;top:0;z-index:60;
  background:rgba(255,255,255,.96);
  border-bottom:1px solid transparent;
  transition:box-shadow .2s ease,border-color .2s ease;
}
.site-header.is-stuck{border-bottom-color:var(--line);box-shadow:var(--shadow-1);}
.header-inner{display:flex;align-items:center;gap:24px;height:70px;}
.brand{display:inline-flex;align-items:center;gap:10px;flex:0 0 auto;}
.brand-mark{
  width:34px;height:34px;border-radius:10px;flex:0 0 34px;
  background:linear-gradient(150deg,var(--brand-500),var(--brand-700));
  display:inline-flex;align-items:center;justify-content:center;
}
.brand-mark svg{width:20px;height:20px;display:block;}
.brand-name{font-size:17px;font-weight:700;color:var(--ink);letter-spacing:.01em;white-space:nowrap;}
.nav-main{display:flex;align-items:center;gap:26px;margin-left:8px;flex:1 1 auto;}
.nav-link{
  position:relative;font-size:15px;font-weight:500;color:var(--ink-2);
  padding:24px 0;white-space:nowrap;
}
.nav-link::after{
  content:"";position:absolute;left:50%;right:50%;bottom:16px;height:2px;
  background:var(--brand-600);border-radius:2px;
  transition:left .18s ease,right .18s ease;
}
.nav-link:hover{color:var(--brand-600);}
.nav-link:hover::after{left:0;right:0;}
.nav-link.is-active{color:var(--brand-600);font-weight:600;}
.nav-link.is-active::after{left:0;right:0;}
.header-actions{display:flex;align-items:center;gap:12px;flex:0 0 auto;}
.search-form{position:relative;display:flex;align-items:center;}
.search-form input{
  width:220px;height:40px;border-radius:var(--r-pill);
  border:1px solid var(--line);background:var(--surface-2);
  padding:0 40px 0 16px;font-size:14px;color:var(--ink);
  transition:border-color .18s ease,background .18s ease,box-shadow .18s ease;
}
.search-form input::placeholder{color:var(--ink-3);}
.search-form input:focus{outline:none;border-color:var(--brand-500);background:var(--surface);box-shadow:0 0 0 3px var(--brand-100);}
.search-form button{
  position:absolute;right:6px;top:50%;transform:translateY(-50%);
  width:30px;height:30px;border-radius:50%;display:inline-flex;align-items:center;justify-content:center;
  color:var(--ink-3);
}
.search-form button:hover{background:var(--brand-50);color:var(--brand-600);}
.link-login{font-size:14px;font-weight:500;color:var(--ink-2);white-space:nowrap;}
.link-login:hover{color:var(--brand-600);}

/* ---------- Buttons ---------- */
.btn{
  display:inline-flex;align-items:center;justify-content:center;gap:8px;
  height:44px;padding:0 22px;border-radius:var(--r-pill);
  font-size:15px;font-weight:600;line-height:1;white-space:nowrap;
  transition:background .18s ease,color .18s ease,border-color .18s ease,transform .12s ease,box-shadow .18s ease;
}
.btn:active{transform:scale(.98);}
.btn-primary{background:var(--brand-600);color:#fff;box-shadow:var(--shadow-1);}
.btn-primary:hover{background:var(--brand-700);color:#fff;transform:translateY(-1px);box-shadow:var(--shadow-2);}
.btn-outline{background:var(--surface);color:var(--ink);border:1px solid var(--line);}
.btn-outline:hover{border-color:var(--brand-500);color:var(--brand-600);}
.btn-ghost{background:transparent;color:var(--brand-600);}
.btn-ghost:hover{background:var(--brand-50);}
.btn-sm{height:38px;padding:0 18px;font-size:14px;}
.text-link{display:inline-flex;align-items:center;gap:6px;font-size:15px;font-weight:600;color:var(--brand-600);}
.text-link svg{transition:transform .18s ease;}
.text-link:hover svg{transform:translateX(4px);}
.menu-toggle{display:none;width:42px;height:42px;border-radius:12px;border:1px solid var(--line);align-items:center;justify-content:center;background:var(--surface);}
.menu-toggle span{display:block;width:18px;height:2px;background:var(--ink);border-radius:2px;position:relative;}
.menu-toggle span::before,.menu-toggle span::after{content:"";position:absolute;left:0;width:18px;height:2px;background:var(--ink);border-radius:2px;}
.menu-toggle span::before{top:-6px;}
.menu-toggle span::after{top:6px;}

/* ---------- Drawer ---------- */
.drawer-mask{
  position:fixed;inset:0;background:rgba(15,27,42,.42);opacity:0;visibility:hidden;
  transition:opacity .22s ease,visibility .22s ease;z-index:70;
}
.drawer{
  position:fixed;top:0;right:0;height:100%;width:min(320px,86vw);background:var(--surface);
  z-index:80;transform:translateX(102%);transition:transform .26s ease;
  padding:22px;display:flex;flex-direction:column;gap:8px;overflow-y:auto;
  box-shadow:-18px 0 40px -24px rgba(16,42,78,.4);
}
.drawer.is-open{transform:translateX(0);}
.drawer-mask.is-open{opacity:1;visibility:visible;}
.drawer .drawer-title{font-size:13px;font-weight:600;color:var(--ink-3);letter-spacing:.06em;margin-bottom:6px;}
.drawer a.drawer-link{padding:13px 12px;border-radius:12px;font-size:16px;font-weight:500;color:var(--ink);}
.drawer a.drawer-link:hover{background:var(--brand-50);color:var(--brand-600);}
.drawer a.drawer-link.is-active{background:var(--brand-50);color:var(--brand-600);font-weight:700;}
.drawer .drawer-actions{margin-top:18px;display:grid;gap:10px;}
.drawer .drawer-actions .btn{width:100%;}
.drawer-close{align-self:flex-end;width:38px;height:38px;border-radius:12px;border:1px solid var(--line);display:inline-flex;align-items:center;justify-content:center;color:var(--ink-2);}

/* ---------- Breadcrumb ---------- */
.breadcrumb{padding:20px 0 0;}
.breadcrumb ol{display:flex;flex-wrap:wrap;align-items:center;gap:8px;font-size:13px;color:var(--ink-3);}
.breadcrumb li{display:inline-flex;align-items:center;gap:8px;}
.breadcrumb li+li::before{content:"/";color:var(--ink-3);}
.breadcrumb a{color:var(--ink-2);}
.breadcrumb a:hover{color:var(--brand-600);}
.breadcrumb [aria-current="page"]{color:var(--ink);font-weight:600;}

/* ---------- Banner ---------- */
.cat-banner{
  position:relative;margin-top:18px;border-radius:var(--r-hero);overflow:hidden;
  background-image:url("/assets/images/backpic/back-1.png");
  background-size:cover;background-position:center;
  min-height:340px;display:flex;align-items:flex-end;
  box-shadow:var(--shadow-2);
}
.cat-banner::after{
  content:"";position:absolute;inset:0;
  background:linear-gradient(120deg,rgba(12,62,112,.88) 0%,rgba(20,88,158,.72) 48%,rgba(30,111,196,.46) 100%);
}
.cat-banner-inner{position:relative;z-index:2;padding:44px 40px;max-width:760px;color:#fff;}
.cat-banner .cat-badge{
  display:inline-flex;align-items:center;gap:8px;
  padding:6px 14px;border-radius:var(--r-pill);
  background:rgba(255,255,255,.16);border:1px solid rgba(255,255,255,.34);
  font-size:13px;font-weight:600;color:#fff;margin-bottom:16px;
}
.cat-banner h1{
  font-size:clamp(28px,4.4vw,46px);font-weight:700;line-height:1.22;color:#fff;
}
.cat-banner p{margin-top:14px;font-size:16px;line-height:1.75;color:rgba(255,255,255,.9);max-width:640px;}
.cat-banner .banner-meta{display:flex;flex-wrap:wrap;gap:10px;margin-top:22px;}
.cat-banner .banner-meta span{
  padding:6px 14px;border-radius:var(--r-pill);font-size:13px;font-weight:500;
  background:rgba(255,255,255,.12);border:1px solid rgba(255,255,255,.22);color:#fff;
}

/* ---------- Intro ---------- */
.intro-grid{display:grid;grid-template-columns:1.15fr .85fr;gap:48px;align-items:start;}
.intro-grid h2{font-size:clamp(22px,3vw,32px);font-weight:700;line-height:1.3;margin-bottom:16px;}
.intro-grid p{color:var(--ink-2);font-size:16px;margin-bottom:16px;}
.intro-grid p:last-child{margin-bottom:0;}
.fact-card{
  background:var(--surface);border:1px solid var(--line);border-radius:var(--r-card);
  padding:26px;box-shadow:var(--shadow-1);
}
.fact-card h3{font-size:18px;font-weight:600;margin-bottom:16px;}
.fact-row{display:flex;align-items:baseline;justify-content:space-between;gap:16px;padding:12px 0;border-bottom:1px dashed var(--line);}
.fact-row:last-child{border-bottom:0;padding-bottom:0;}
.fact-row span{font-size:14px;color:var(--ink-3);}
.fact-row strong{font-size:18px;font-weight:700;color:var(--brand-700);font-variant-numeric:tabular-nums;}
.fact-row strong em{font-style:normal;font-size:13px;font-weight:500;color:var(--ink-3);margin-left:4px;}

/* ---------- Layout with sticky rail ---------- */
.cat-layout{display:grid;grid-template-columns:224px minmax(0,1fr);gap:48px;align-items:start;}
.anchor-rail{position:sticky;top:96px;}
.anchor-rail .rail-title{font-size:13px;font-weight:600;color:var(--ink-3);letter-spacing:.06em;margin-bottom:14px;}
.anchor-rail ul{display:flex;flex-direction:column;gap:4px;border-left:1px solid var(--line);}
.anchor-rail a{
  display:block;padding:9px 0 9px 16px;font-size:14px;color:var(--ink-2);
  border-left:2px solid transparent;margin-left:-1px;transition:color .16s ease,border-color .16s ease,background .16s ease;
}
.anchor-rail a:hover{color:var(--brand-600);border-left-color:var(--brand-500);background:var(--brand-50);}
.anchor-rail .rail-cta{
  margin-top:22px;background:var(--surface);border:1px solid var(--line);border-radius:var(--r-card);
  padding:18px;box-shadow:var(--shadow-1);
}
.anchor-rail .rail-cta p{font-size:13px;color:var(--ink-2);margin-bottom:12px;}
.anchor-rail .rail-cta .btn{width:100%;}

.content-col{min-width:0;}
.block{padding-bottom:72px;}
.block:last-child{padding-bottom:0;}
.block > h2{font-size:clamp(22px,3vw,32px);font-weight:700;line-height:1.3;margin-bottom:10px;}
.block > .block-sub{color:var(--ink-2);font-size:15px;margin-bottom:24px;max-width:720px;}

/* ---------- Offset point cards ---------- */
.point-cols{display:grid;grid-template-columns:1fr 1fr;gap:24px;}
.point-cols .col-right{margin-top:40px;}
.point-card{
  background:var(--surface);border:1px solid var(--line);border-radius:var(--r-card);
  padding:24px;box-shadow:var(--shadow-1);margin-bottom:24px;
  transition:transform .18s ease,box-shadow .18s ease,border-color .18s ease;
}
.point-card:last-child{margin-bottom:0;}
.point-card:hover{transform:translateY(-3px);box-shadow:var(--shadow-2);border-color:var(--brand-100);}
.point-card .icon-box{
  width:44px;height:44px;border-radius:12px;background:var(--brand-50);
  display:inline-flex;align-items:center;justify-content:center;color:var(--brand-600);margin-bottom:14px;
}
.point-card h3{font-size:19px;font-weight:600;margin-bottom:8px;}
.point-card p{font-size:15px;color:var(--ink-2);}
.point-card .tagline{display:inline-block;margin-top:14px;}

/* ---------- Alternating media ---------- */
.media-row{display:grid;grid-template-columns:1fr 1fr;gap:40px;align-items:center;margin-bottom:48px;}
.media-row:last-child{margin-bottom:0;}
.media-row.reverse .media-figure{order:2;}
.media-figure{border-radius:var(--r-card);overflow:hidden;box-shadow:var(--shadow-1);background:var(--surface-2);position:relative;}
.media-figure img{width:100%;aspect-ratio:16/10;object-fit:cover;}
.media-figure figcaption{font-size:13px;color:var(--ink-3);padding:12px 16px;background:var(--surface);border-top:1px solid var(--line);}
.media-text h3{font-size:21px;font-weight:600;margin-bottom:12px;}
.media-text p{font-size:15px;color:var(--ink-2);margin-bottom:12px;}
.check-list{display:flex;flex-direction:column;gap:10px;margin-top:16px;}
.check-list li{display:flex;gap:10px;align-items:flex-start;font-size:15px;color:var(--ink-2);}
.check-list .tick{flex:0 0 20px;width:20px;height:20px;border-radius:50%;background:var(--accent-soft);position:relative;margin-top:3px;}
.check-list .tick::after{
  content:"";position:absolute;left:6px;top:6px;width:7px;height:4px;
  border-left:2px solid var(--accent);border-bottom:2px solid var(--accent);transform:rotate(-45deg);
}

/* ---------- Spec list ---------- */
.spec-list{background:var(--surface);border:1px solid var(--line);border-radius:var(--r-card);overflow:hidden;box-shadow:var(--shadow-1);}
.spec-row{display:grid;grid-template-columns:200px 1fr;gap:24px;padding:18px 24px;border-bottom:1px solid var(--line);}
.spec-row:last-child{border-bottom:0;}
.spec-row dt{font-size:14px;color:var(--ink-3);}
.spec-row dd{font-size:15px;color:var(--ink);font-weight:500;}

/* ---------- Entry cards ---------- */
.entry-grid{display:grid;grid-template-columns:repeat(2,1fr);gap:24px;}
.entry-card{
  background:var(--surface);border:1px solid var(--line);border-radius:var(--r-card);
  overflow:hidden;box-shadow:var(--shadow-1);display:flex;flex-direction:column;
  transition:transform .18s ease,box-shadow .18s ease;
}
.entry-card:hover{transform:translateY(-3px);box-shadow:var(--shadow-2);}
.entry-card .thumb{position:relative;background:var(--surface-2);}
.entry-card .thumb img{width:100%;aspect-ratio:16/10;object-fit:cover;}
.entry-card .thumb .badge{
  position:absolute;top:12px;left:12px;
  padding:5px 12px;border-radius:var(--r-pill);font-size:12px;font-weight:600;
  background:rgba(15,27,42,.62);color:#fff;backdrop-filter:none;
}
.entry-card .thumb .badge.warm{background:var(--warm);}
.entry-card .body{padding:20px 22px 22px;display:flex;flex-direction:column;gap:10px;flex:1 1 auto;}
.entry-card h3{font-size:17px;font-weight:600;line-height:1.5;}
.entry-card:hover h3{color:var(--brand-600);}
.entry-card p{font-size:14px;color:var(--ink-2);display:-webkit-box;-webkit-line-clamp:3;-webkit-box-orient:vertical;overflow:hidden;}
.entry-card .meta{display:flex;align-items:center;justify-content:space-between;gap:12px;margin-top:auto;padding-top:6px;}
.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-600);font-size:12px;font-weight:600;
}
.badge-accent{background:var(--accent-soft);color:var(--accent);}
.entry-card .meta time{font-size:13px;color:var(--ink-3);}
.entry-card .arrow{
  width:28px;height:28px;border-radius:50%;border:1px solid var(--line);
  display:inline-flex;align-items:center;justify-content:center;color:var(--brand-600);
  transition:background .18s ease,border-color .18s ease,transform .18s ease;
}
.entry-card:hover .arrow{background:var(--brand-50);border-color:var(--brand-100);transform:translateX(3px);}

/* ---------- FAQ ---------- */
.faq-list{display:flex;flex-direction:column;gap:14px;}
.faq-item{
  background:var(--surface);border:1px solid var(--line);border-radius:var(--r-card);
  box-shadow:var(--shadow-1);overflow:hidden;
  transition:border-color .18s ease,box-shadow .18s ease;
}
.faq-item[open]{border-color:var(--brand-100);box-shadow:var(--shadow-2);}
.faq-item summary{
  list-style:none;cursor:pointer;display:flex;align-items:center;justify-content:space-between;gap:20px;
  padding:0 24px;min-height:56px;font-size:16px;font-weight:600;color:var(--ink);
}
.faq-item summary::-webkit-details-marker{display:none;}
.faq-item summary:hover{color:var(--brand-600);}
.faq-toggle{position:relative;flex:0 0 18px;width:18px;height:18px;}
.faq-toggle::before,.faq-toggle::after{
  content:"";position:absolute;background:var(--brand-600);border-radius:2px;transition:transform .2s ease;
}
.faq-toggle::before{left:0;right:0;top:8px;height:2px;}
.faq-toggle::after{top:0;bottom:0;left:8px;width:2px;}
.faq-item[open] .faq-toggle::after{transform:scaleY(0);}
.faq-answer{padding:0 24px 22px;font-size:15px;color:var(--ink-2);animation:faqIn .2s ease;}
@keyframes faqIn{from{opacity:0;transform:translateY(-4px);}to{opacity:1;transform:translateY(0);}}

/* ---------- CTA band ---------- */
.cta-band{
  background:linear-gradient(180deg,var(--brand-50),#fff);
  border:1px solid var(--brand-100);border-radius:var(--r-hero);
  padding:48px 40px;display:flex;align-items:center;justify-content:space-between;gap:32px;flex-wrap:wrap;
}
.cta-band h2{font-size:clamp(22px,2.6vw,30px);font-weight:700;line-height:1.3;margin-bottom:10px;}
.cta-band p{color:var(--ink-2);font-size:15px;max-width:560px;}
.cta-band .cta-actions{display:flex;gap:12px;flex-wrap:wrap;}

/* ---------- Footer ---------- */
.site-footer{background:var(--ink);color:#fff;margin-top:96px;padding:64px 0 28px;}
.footer-grid{display:grid;grid-template-columns:1.4fr 1fr 1fr 1.2fr;gap:32px;}
.footer-brand{display:flex;align-items:center;gap:10px;font-size:17px;font-weight:700;color:#fff;margin-bottom:14px;}
.footer-brand .brand-mark{background:rgba(255,255,255,.12);}
.footer-about{font-size:14px;line-height:1.8;color:rgba(255,255,255,.66);max-width:320px;}
.footer-col h4{font-size:14px;font-weight:700;color:#fff;margin-bottom:16px;letter-spacing:.04em;}
.footer-col a{display:block;font-size:14px;color:rgba(255,255,255,.72);padding:6px 0;}
.footer-col a:hover{color:#fff;}
.footer-col p{font-size:14px;color:rgba(255,255,255,.66);margin-bottom:10px;line-height:1.8;}
.footer-bottom{
  margin-top:44px;padding-top:22px;border-top:1px solid rgba(255,255,255,.14);
  display:flex;align-items:center;justify-content:space-between;gap:16px;flex-wrap:wrap;
}
.footer-bottom p{font-size:13px;color:rgba(255,255,255,.6);}
.footer-links{display:flex;flex-wrap:wrap;gap:18px;}
.footer-links a{font-size:13px;color:rgba(255,255,255,.66);}
.footer-links a:hover{color:#fff;}

/* ---------- Mobile sticky CTA ---------- */
.mobile-cta{
  position:fixed;left:0;right:0;bottom:0;z-index:55;display:none;
  background:rgba(255,255,255,.97);border-top:1px solid var(--line);
  padding:10px 16px calc(10px + env(safe-area-inset-bottom));
  box-shadow:0 -8px 24px -18px rgba(16,42,78,.5);
  align-items:center;gap:12px;justify-content:space-between;
}
.mobile-cta p{font-size:12px;color:var(--ink-2);line-height:1.4;}
.mobile-cta .btn{flex:0 0 auto;}

/* ---------- Skeleton ---------- */
.skeleton{background:linear-gradient(90deg,var(--surface-2) 25%,#F7F9FD 37%,var(--surface-2) 63%);background-size:400% 100%;animation:shimmer 1.2s ease-in-out infinite;border-radius:var(--r-media);}
@keyframes shimmer{0%{background-position:100% 50%;}100%{background-position:0 50%;}}

/* ---------- Responsive ---------- */
@media (max-width:1279px){
  :root{--sp-section:80px;}
  .cat-layout{grid-template-columns:200px minmax(0,1fr);gap:36px;}
}
@media (max-width:1023px){
  .nav-main{display:none;}
  .search-form{display:none;}
  .menu-toggle{display:inline-flex;}
  .link-login{display:none;}
  .header-actions .btn-ghost{display:none;}
  .intro-grid{grid-template-columns:1fr;gap:32px;}
  .cat-layout{grid-template-columns:1fr;gap:28px;}
  .anchor-rail{position:static;top:auto;}
  .anchor-rail ul{flex-direction:row;overflow-x:auto;border-left:0;border-bottom:1px solid var(--line);gap:2px;padding-bottom:2px;scrollbar-width:none;}
  .anchor-rail ul::-webkit-scrollbar{display:none;}
  .anchor-rail a{white-space:nowrap;border-left:0;border-bottom:2px solid transparent;padding:10px 14px;}
  .anchor-rail a:hover{border-left-color:transparent;border-bottom-color:var(--brand-500);}
  .anchor-rail .rail-cta{display:none;}
  .point-cols .col-right{margin-top:0;}
  .section{--sp-section:72px;padding:72px 0;}
}
@media (max-width:767px){
  :root{--sp-section:56px;}
  .container{padding:0 16px;}
  .section{padding:56px 0;}
  .header-inner{height:62px;gap:12px;}
  .brand-name{font-size:15px;}
  .cat-banner{min-height:0;border-radius:16px;}
  .cat-banner-inner{padding:28px 20px;}
  .cat-banner p{font-size:15px;}
  .point-cols{grid-template-columns:1fr;}
  .media-row{grid-template-columns:1fr;gap:20px;margin-bottom:32px;}
  .media-row.reverse .media-figure{order:0;}
  .entry-grid{grid-template-columns:1fr;}
  .spec-row{grid-template-columns:1fr;gap:4px;padding:16px 18px;}
  .cta-band{padding:32px 22px;}
  .cta-band .cta-actions{width:100%;}
  .cta-band .cta-actions .btn{flex:1 1 auto;}
  .footer-grid{grid-template-columns:1fr 1fr;gap:26px;}
  .site-footer{padding:48px 0 90px;margin-top:64px;}
  .footer-bottom{flex-direction:column;align-items:flex-start;}
  body{padding-bottom:74px;}
  .mobile-cta{display:flex;}
}
@media (max-width:519px){
  .footer-grid{grid-template-columns:1fr;}
  .cat-banner h1{font-size:26px;}
  .block{padding-bottom:52px;}
  .entry-card .body{padding:16px 16px 18px;}
  .faq-item summary{padding:0 18px;font-size:15px;}
  .faq-answer{padding:0 18px 18px;}
  .mobile-cta p{display:none;}
  .mobile-cta .btn{width:100%;}
}

/* roulang page: article */
:root{
  --brand-700:#0C3E70;
  --brand-600:#14589E;
  --brand-500:#1E6FC4;
  --brand-100:#E7F0FB;
  --brand-50:#F3F8FE;
  --accent:#12A594;
  --accent-soft:#E3F5F2;
  --warm:#F97316;
  --bg:#F5F7FB;
  --surface:#FFFFFF;
  --surface-2:#EEF2F8;
  --ink:#0F1B2A;
  --ink-2:#47566B;
  --ink-3:#7C8AA0;
  --line:#E3E9F2;
  --danger:#D9534F;
  --radius-card:16px;
  --radius-media:12px;
  --radius-pill:999px;
  --shadow-1:0 2px 8px rgba(16,42,78,.06);
  --shadow-2:0 14px 30px -14px rgba(16,42,78,.20);
  --container:1200px;
  --sp-section:96px;
}
*,*::before,*::after{box-sizing:border-box;}
html{-webkit-text-size-adjust:100%;scroll-behavior:smooth;scroll-padding-top:96px;}
body{
  margin:0;
  background:var(--bg);
  color:var(--ink);
  font-family:-apple-system,BlinkMacSystemFont,"PingFang SC","Microsoft YaHei","Noto Sans SC","Helvetica Neue",Arial,sans-serif;
  font-size:16px;
  line-height:1.75;
  -webkit-font-smoothing:antialiased;
  padding-bottom:0;
}
img{max-width:100%;display:block;border:0;}
a{color:var(--brand-600);text-decoration:none;transition:color .18s ease;}
a:hover{color:var(--brand-700);}
button{font-family:inherit;}
input,button,select,textarea{font:inherit;color:inherit;}
ul,ol{margin:0;padding:0;list-style:none;}
h1,h2,h3,h4,p{margin:0;}
:focus-visible{outline:2px solid var(--brand-500);outline-offset:2px;border-radius:6px;}
.container{width:100%;max-width:var(--container);margin:0 auto;padding:0 24px;}

/* ---------- 按钮 ---------- */
.btn{
  display:inline-flex;align-items:center;justify-content:center;gap:8px;
  height:46px;padding:0 22px;border-radius:var(--radius-pill);
  font-size:15px;font-weight:600;line-height:1;cursor:pointer;
  border:1px solid transparent;transition:all .18s ease;white-space:nowrap;
}
.btn:active{transform:scale(.98);}
.btn-primary{background:var(--brand-600);color:#fff;box-shadow:var(--shadow-1);}
.btn-primary:hover{background:var(--brand-700);color:#fff;transform:translateY(-1px);box-shadow:var(--shadow-2);}
.btn-outline{background:var(--surface);color:var(--ink);border-color:var(--line);}
.btn-outline:hover{border-color:var(--brand-500);color:var(--brand-600);transform:translateY(-1px);box-shadow:var(--shadow-1);}
.btn-ghost{background:transparent;color:var(--brand-600);}
.btn-ghost:hover{background:var(--brand-50);color:var(--brand-700);}
.btn-sm{height:38px;padding:0 16px;font-size:14px;}
.btn-block{width:100%;}
.link-arrow{display:inline-flex;align-items:center;gap:6px;font-size:14px;font-weight:600;color:var(--brand-600);}
.link-arrow svg{transition:transform .18s ease;}
.link-arrow:hover svg{transform:translateX(4px);}

/* ---------- 徽章 / 标签 ---------- */
.badge{
  display:inline-flex;align-items:center;gap:6px;
  padding:4px 12px;border-radius:var(--radius-pill);
  font-size:12px;font-weight:600;line-height:1.6;
  background:var(--brand-50);color:var(--brand-600);border:1px solid var(--brand-100);
}
.badge-accent{background:var(--accent-soft);color:var(--accent);border-color:transparent;}

/* ---------- 头部导航 ---------- */
.site-header{
  position:sticky;top:0;z-index:80;
  background:rgba(255,255,255,.96);
  backdrop-filter:saturate(150%) blur(6px);
  border-bottom:1px solid transparent;
  transition:box-shadow .2s ease,border-color .2s ease;
}
.site-header.is-scrolled{border-bottom-color:var(--line);box-shadow:0 6px 20px -14px rgba(16,42,78,.32);}
.header-inner{display:flex;align-items:center;gap:28px;height:68px;}
.brand{display:flex;align-items:center;gap:10px;flex-shrink:0;}
.brand-mark{
  width:34px;height:34px;border-radius:10px;
  background:linear-gradient(135deg,var(--brand-600),var(--brand-500));
  display:flex;align-items:center;justify-content:center;flex-shrink:0;
}
.brand-mark svg{width:22px;height:22px;}
.brand-text{font-size:17px;font-weight:700;color:var(--ink);letter-spacing:.2px;}
.nav-main{display:flex;align-items:center;gap:6px;margin-left:8px;}
.nav-link{
  position:relative;padding:8px 12px;font-size:15px;font-weight:500;color:var(--ink-2);
  border-radius:8px;transition:color .18s ease;
}
.nav-link::after{
  content:"";position:absolute;left:12px;right:12px;bottom:2px;height:2px;border-radius:2px;
  background:var(--brand-600);transform:scaleX(0);transform-origin:center;
  transition:transform .18s ease;
}
.nav-link:hover{color:var(--brand-600);}
.nav-link:hover::after{transform:scaleX(1);}
.nav-link.is-active{color:var(--brand-600);font-weight:600;}
.nav-link.is-active::after{transform:scaleX(1);}
.nav-actions{display:flex;align-items:center;gap:12px;margin-left:auto;}
.search-box{
  position:relative;display:flex;align-items:center;
  width:236px;height:40px;border:1px solid var(--line);border-radius:var(--radius-pill);
  background:var(--surface-2);transition:border-color .18s ease,background .18s ease,box-shadow .18s ease;
}
.search-box svg{width:18px;height:18px;margin-left:14px;color:var(--ink-3);flex-shrink:0;}
.search-box input{
  width:100%;height:100%;border:0;background:transparent;padding:0 14px 0 8px;
  font-size:14px;outline:none;color:var(--ink);
}
.search-box input::placeholder{color:var(--ink-3);}
.search-box:focus-within{border-color:var(--brand-500);background:var(--surface);box-shadow:0 0 0 3px rgba(30,111,196,.12);}
.nav-text-link{font-size:14px;font-weight:600;color:var(--ink-2);}
.nav-text-link:hover{color:var(--brand-600);}
.menu-toggle{
  display:none;width:42px;height:42px;border:1px solid var(--line);border-radius:12px;
  background:var(--surface);cursor:pointer;padding:0;align-items:center;justify-content:center;
  flex-direction:column;gap:4px;
}
.menu-toggle span{display:block;width:18px;height:2px;border-radius:2px;background:var(--ink);transition:transform .2s ease,opacity .2s ease;}
.menu-toggle[aria-expanded="true"] span:nth-child(1){transform:translateY(6px) rotate(45deg);}
.menu-toggle[aria-expanded="true"] span:nth-child(2){opacity:0;}
.menu-toggle[aria-expanded="true"] span:nth-child(3){transform:translateY(-6px) rotate(-45deg);}
.drawer{
  position:fixed;top:0;right:0;bottom:0;width:300px;max-width:86vw;z-index:100;
  background:var(--surface);border-left:1px solid var(--line);
  transform:translateX(100%);transition:transform .26s ease;
  padding:24px 22px;display:flex;flex-direction:column;gap:8px;overflow-y:auto;
}
.drawer.is-open{transform:translateX(0);}
.drawer .drawer-title{font-size:13px;font-weight:600;color:var(--ink-3);margin:8px 0 4px;letter-spacing:.4px;}
.drawer a.drawer-link{
  display:flex;align-items:center;justify-content:space-between;
  padding:13px 14px;border-radius:12px;color:var(--ink);font-size:15px;font-weight:500;
  background:var(--surface-2);
}
.drawer a.drawer-link:hover{background:var(--brand-50);color:var(--brand-600);}
.drawer a.drawer-link.is-active{background:var(--brand-50);color:var(--brand-600);font-weight:600;}
.drawer-actions{display:flex;flex-direction:column;gap:10px;margin-top:14px;}
.drawer-mask{
  position:fixed;inset:0;background:rgba(15,27,42,.42);z-index:90;
  opacity:0;visibility:hidden;transition:opacity .24s ease,visibility .24s ease;
}
.drawer-mask.is-open{opacity:1;visibility:visible;}

/* ---------- 面包屑 ---------- */
.crumb-bar{padding:22px 0 0;}
.breadcrumb{display:flex;flex-wrap:wrap;align-items:center;gap:8px;font-size:13px;color:var(--ink-3);}
.breadcrumb li{display:flex;align-items:center;gap:8px;}
.breadcrumb li+li::before{content:"/";color:var(--line);}
.breadcrumb a{color:var(--ink-3);}
.breadcrumb a:hover{color:var(--brand-600);}
.breadcrumb .current{color:var(--ink-2);max-width:420px;overflow:hidden;text-overflow:ellipsis;white-space:nowrap;}

/* ---------- 文章头部 ---------- */
.article-head{padding:24px 0 32px;border-bottom:1px solid var(--line);}
.article-head h1{
  font-size:clamp(23px,3.4vw,36px);line-height:1.28;font-weight:700;color:var(--ink);
  margin:16px 0 18px;max-width:900px;
}
.meta-row{display:flex;flex-wrap:wrap;align-items:center;gap:10px;font-size:13px;color:var(--ink-3);}
.meta-row span{display:inline-flex;align-items:center;gap:6px;}
.meta-row .dot{width:3px;height:3px;border-radius:50%;background:var(--line);}
.meta-row .meta-strong{color:var(--ink-2);font-weight:600;}

/* ---------- 布局 ---------- */
.layout{
  display:grid;grid-template-columns:minmax(0,1fr) 300px;gap:48px;
  align-items:start;padding:40px 0 var(--sp-section);
}
.main-col{min-width:0;max-width:760px;}
.article-body{
  font-size:16px;line-height:1.8;color:var(--ink-2);word-break:break-word;
}
.article-body>p:first-of-type{font-size:17px;color:var(--ink-2);}
.article-body h2{
  position:relative;font-size:clamp(20px,2.2vw,26px);line-height:1.35;font-weight:700;
  color:var(--ink);margin:48px 0 16px;padding-left:14px;
}
.article-body h2::before{
  content:"";position:absolute;left:0;top:.22em;bottom:.22em;width:4px;border-radius:2px;background:var(--brand-500);
}
.article-body h3{font-size:20px;font-weight:600;color:var(--ink);margin:32px 0 12px;}
.article-body h4{font-size:17px;font-weight:600;color:var(--ink);margin:24px 0 10px;}
.article-body p{margin:0 0 18px;}
.article-body a{color:var(--brand-600);border-bottom:1px solid rgba(20,88,158,.28);}
.article-body a:hover{border-bottom-color:var(--brand-600);}
.article-body ul,.article-body ol{margin:0 0 20px;padding-left:24px;}
.article-body ul{list-style:disc;}
.article-body ol{list-style:decimal;}
.article-body li{margin-bottom:8px;line-height:1.9;}
.article-body ul li::marker{color:var(--accent);}
.article-body ol li::marker{color:var(--accent);font-weight:600;}
.article-body blockquote{
  margin:24px 0;padding:16px 20px;border-left:3px solid var(--accent);
  background:var(--surface-2);border-radius:0 var(--radius-media) var(--radius-media) 0;color:var(--ink-2);
}
.article-body blockquote p:last-child{margin-bottom:0;}
.article-body img{border-radius:var(--radius-media);margin:24px auto;}
.article-body figure{margin:24px 0;}
.article-body figcaption{font-size:13px;color:var(--ink-3);text-align:center;margin-top:8px;}
.article-body pre{
  background:var(--surface-2);border:1px solid var(--line);border-radius:var(--radius-media);
  padding:16px;overflow-x:auto;font-size:14px;line-height:1.7;color:var(--ink);margin:24px 0;
  font-family:ui-monospace,SFMono-Regular,Menlo,Consolas,monospace;
}
.article-body code{
  font-family:ui-monospace,SFMono-Regular,Menlo,Consolas,monospace;
  font-size:14px;background:var(--surface-2);border-radius:6px;padding:2px 6px;
}
.article-body pre code{background:none;padding:0;}
.article-body table{width:100%;border-collapse:collapse;margin:24px 0;font-size:15px;}
.article-body th,.article-body td{border-bottom:1px solid var(--line);padding:12px 14px;text-align:left;}
.article-body th{background:var(--brand-50);color:var(--brand-700);font-weight:600;}
.article-body hr{border:0;border-top:1px solid var(--line);margin:36px 0;}

/* ---------- 空态 ---------- */
.empty-state{
  border:1px dashed var(--line);border-radius:var(--radius-card);
  background:var(--surface);min-height:280px;padding:48px 24px;
  display:flex;flex-direction:column;align-items:center;justify-content:center;gap:14px;text-align:center;
}
.empty-state svg{width:56px;height:56px;color:var(--ink-3);}
.empty-state p{font-size:16px;color:var(--ink-2);}
.empty-state .empty-tip{font-size:14px;color:var(--ink-3);}

/* ---------- 标签行 ---------- */
.tag-row{display:flex;flex-wrap:wrap;align-items:center;gap:10px;margin:40px 0 0;padding-top:28px;border-top:1px solid var(--line);}
.tag-row .tag-label{font-size:13px;color:var(--ink-3);margin-right:2px;}
.tag{
  display:inline-flex;align-items:center;padding:6px 14px;border-radius:var(--radius-pill);
  background:var(--surface);border:1px solid var(--line);font-size:13px;color:var(--ink-2);
  transition:all .18s ease;
}
.tag:hover{border-color:var(--brand-500);color:var(--brand-600);background:var(--brand-50);}

/* ---------- 上一篇 / 返回 ---------- */
.post-nav{display:grid;grid-template-columns:1fr 1fr;gap:16px;margin-top:28px;}
.post-nav a{
  display:flex;flex-direction:column;gap:6px;padding:18px 20px;
  background:var(--surface);border:1px solid var(--line);border-radius:var(--radius-card);
  box-shadow:var(--shadow-1);transition:all .18s ease;
}
.post-nav a:hover{transform:translateY(-3px);box-shadow:var(--shadow-2);border-color:var(--brand-100);}
.post-nav span.pn-kicker{font-size:12px;color:var(--ink-3);letter-spacing:.4px;}
.post-nav span.pn-title{font-size:15px;font-weight:600;color:var(--ink);}
.post-nav a:hover span.pn-title{color:var(--brand-600);}

/* ---------- 侧栏 ---------- */
.sidebar{position:sticky;top:96px;display:flex;flex-direction:column;gap:20px;}
.side-card{
  background:var(--surface);border:1px solid var(--line);border-radius:var(--radius-card);
  padding:20px;box-shadow:var(--shadow-1);
}
.side-card h3{font-size:15px;font-weight:700;color:var(--ink);margin-bottom:14px;display:flex;align-items:center;gap:8px;}
.side-card h3::before{content:"";width:4px;height:16px;border-radius:2px;background:var(--brand-500);}
.toc-list li+li{margin-top:2px;}
.toc-list a{
  display:block;padding:8px 10px;border-radius:10px;font-size:14px;color:var(--ink-2);line-height:1.6;
  border-left:2px solid transparent;transition:all .18s ease;
  overflow:hidden;text-overflow:ellipsis;white-space:nowrap;
}
.toc-list a:hover{background:var(--brand-50);color:var(--brand-600);border-left-color:var(--brand-500);}
.mini-list li+li{margin-top:14px;padding-top:14px;border-top:1px solid var(--line);}
.mini-list a{display:flex;gap:12px;align-items:flex-start;color:inherit;}
.mini-list img{width:64px;height:44px;border-radius:10px;object-fit:cover;flex-shrink:0;}
.mini-list .mini-title{font-size:14px;font-weight:600;color:var(--ink);line-height:1.5;display:-webkit-box;-webkit-line-clamp:2;-webkit-box-orient:vertical;overflow:hidden;}
.mini-list a:hover .mini-title{color:var(--brand-600);}
.mini-list .mini-meta{font-size:12px;color:var(--ink-3);margin-top:4px;}
.side-cta{
  position:relative;border-radius:var(--radius-card);overflow:hidden;padding:24px 20px;color:#fff;
  background-image:linear-gradient(180deg,rgba(12,62,112,.55),rgba(12,62,112,.86)),url('/assets/images/coverpic/cover-4.png');
  background-size:cover;background-position:center;
}
.side-cta h3{font-size:16px;font-weight:700;margin-bottom:8px;color:#fff;}
.side-cta p{font-size:13px;line-height:1.7;color:rgba(255,255,255,.82);margin-bottom:16px;}
.side-cta .btn{background:#fff;color:var(--brand-700);}
.side-cta .btn:hover{background:var(--brand-100);color:var(--brand-700);}

/* ---------- 相关推荐 ---------- */
.related{margin-top:64px;}
.section-head{display:flex;align-items:flex-end;justify-content:space-between;gap:20px;margin-bottom:22px;}
.section-head h2{font-size:clamp(20px,2.4vw,26px);font-weight:700;color:var(--ink);}
.section-head p{font-size:14px;color:var(--ink-3);margin-top:6px;}
.related-grid{display:grid;grid-template-columns:repeat(3,minmax(0,1fr));gap:20px;}
.card{
  display:flex;flex-direction:column;background:var(--surface);border:1px solid var(--line);
  border-radius:var(--radius-card);overflow:hidden;box-shadow:var(--shadow-1);
  transition:transform .2s ease,box-shadow .2s ease,border-color .2s ease;
}
.card:hover{transform:translateY(-3px);box-shadow:var(--shadow-2);border-color:var(--brand-100);}
.card-media{position:relative;aspect-ratio:16/10;overflow:hidden;background:var(--surface-2);}
.card-media img{width:100%;height:100%;object-fit:cover;transition:transform .35s ease;}
.card:hover .card-media img{transform:scale(1.04);}
.card-media .card-badge{position:absolute;left:12px;top:12px;}
.card-body{padding:18px 20px 20px;display:flex;flex-direction:column;gap:10px;flex:1;}
.card-body h3{font-size:16px;font-weight:600;color:var(--ink);line-height:1.5;display:-webkit-box;-webkit-line-clamp:2;-webkit-box-orient:vertical;overflow:hidden;}
.card:hover .card-body h3{color:var(--brand-600);}
.card-body p{font-size:14px;color:var(--ink-2);line-height:1.7;display:-webkit-box;-webkit-line-clamp:3;-webkit-box-orient:vertical;overflow:hidden;}
.card-foot{display:flex;align-items:center;justify-content:space-between;gap:10px;margin-top:auto;padding-top:12px;border-top:1px solid var(--line);font-size:13px;color:var(--ink-3);}

/* ---------- CTA 带 ---------- */
.cta-band{
  margin:0 0 var(--sp-section);
  background:linear-gradient(120deg,var(--brand-50),var(--surface) 62%);
  border:1px solid var(--brand-100);border-radius:20px;
  padding:44px 40px;display:flex;align-items:center;justify-content:space-between;gap:32px;flex-wrap:wrap;
}
.cta-band h2{font-size:clamp(20px,2.4vw,28px);font-weight:700;color:var(--ink);margin-bottom:10px;}
.cta-band p{font-size:15px;color:var(--ink-2);max-width:620px;}
.cta-actions{display:flex;gap:12px;flex-wrap:wrap;}

/* ---------- 页脚 ---------- */
.site-footer{background:var(--ink);color:#fff;padding:64px 0 28px;margin-top:0;}
.footer-grid{display:grid;grid-template-columns:1.4fr 1fr 1fr 1.2fr;gap:32px;padding-bottom:36px;border-bottom:1px solid rgba(255,255,255,.12);}
.footer-brand{display:flex;align-items:center;gap:10px;margin-bottom:14px;}
.footer-brand .brand-mark{width:32px;height:32px;border-radius:9px;}
.footer-brand span{font-size:16px;font-weight:700;color:#fff;}
.footer-about{font-size:14px;line-height:1.8;color:rgba(255,255,255,.66);max-width:320px;}
.footer-col h4{font-size:14px;font-weight:600;color:#fff;margin-bottom:14px;}
.footer-col a{display:block;font-size:14px;color:rgba(255,255,255,.66);padding:5px 0;transition:color .18s ease;}
.footer-col a:hover{color:#fff;}
.footer-col p{font-size:13px;line-height:1.8;color:rgba(255,255,255,.6);margin-bottom:10px;}
.footer-bottom{display:flex;align-items:center;justify-content:space-between;gap:16px;flex-wrap:wrap;padding-top:22px;}
.footer-bottom p{font-size:13px;color:rgba(255,255,255,.6);}
.footer-links{display:flex;gap:20px;flex-wrap:wrap;}
.footer-links a{font-size:13px;color:rgba(255,255,255,.6);}
.footer-links a:hover{color:#fff;}

/* ---------- 移动端悬浮条 ---------- */
.mobile-bar{
  display:none;position:fixed;left:0;right:0;bottom:0;z-index:70;
  background:rgba(255,255,255,.97);border-top:1px solid var(--line);
  padding:10px 16px;box-shadow:0 -6px 20px -14px rgba(16,42,78,.4);
  align-items:center;gap:12px;
}
.mobile-bar .mb-text{font-size:12px;color:var(--ink-3);line-height:1.4;flex:1;}

/* ---------- 骨架 ---------- */
.skeleton{background:linear-gradient(90deg,var(--surface-2) 25%,#E6ECF5 37%,var(--surface-2) 63%);background-size:400% 100%;animation:shimmer 1.2s linear infinite;border-radius:var(--radius-media);}
@keyframes shimmer{0%{background-position:100% 0;}100%{background-position:0 0;}}

/* ---------- 响应式 ---------- */
@media (max-width:1279px){
  .layout{gap:36px;grid-template-columns:minmax(0,1fr) 280px;}
  .search-box{width:200px;}
}
@media (max-width:1023px){
  .nav-main{display:none;}
  .nav-actions .search-box,.nav-actions .nav-text-link,.nav-actions .btn-outline{display:none;}
  .menu-toggle{display:flex;}
  .header-inner{height:62px;}
  .layout{grid-template-columns:minmax(0,1fr);gap:0;padding-top:32px;}
  .main-col{max-width:100%;}
  .sidebar{position:static;top:auto;margin-top:44px;}
  .related-grid{grid-template-columns:repeat(2,minmax(0,1fr));}
  .footer-grid{grid-template-columns:1.4fr 1fr 1fr;gap:28px;}
}
@media (max-width:767px){
  :root{--sp-section:56px;}
  .container{padding:0 16px;}
  .brand-text{font-size:16px;}
  .nav-actions .btn-primary{height:38px;padding:0 14px;font-size:14px;}
  .article-head{padding:20px 0 26px;}
  .article-head h1{margin:14px 0 14px;}
  .breadcrumb .current{max-width:200px;}
  .article-body h2{margin-top:36px;}
  .related-grid{grid-template-columns:1fr;}
  .post-nav{grid-template-columns:1fr;}
  .cta-band{padding:30px 22px;border-radius:16px;}
  .cta-actions{width:100%;}
  .cta-actions .btn{flex:1;}
  .footer-grid{grid-template-columns:1fr 1fr;}
  .footer-bottom{flex-direction:column;align-items:flex-start;}
  .mobile-bar{display:flex;}
  body{padding-bottom:74px;}
}
@media (max-width:519px){
  .footer-grid{grid-template-columns:1fr;}
  .side-cta{padding:20px 16px;}
}

/* roulang page: category2 */
:root{
  --brand-700:#0C3E70;
  --brand-600:#14589E;
  --brand-500:#1E6FC4;
  --brand-100:#E7F0FB;
  --brand-50:#F3F8FE;
  --accent:#12A594;
  --accent-soft:#E3F5F2;
  --warm:#F97316;
  --bg:#F5F7FB;
  --surface:#FFFFFF;
  --surface-2:#EEF2F8;
  --ink:#0F1B2A;
  --ink-2:#47566B;
  --ink-3:#7C8AA0;
  --line:#E3E9F2;
  --radius-card:16px;
  --radius-media:12px;
  --radius-pill:999px;
  --shadow-1:0 2px 8px rgba(16,42,78,.06);
  --shadow-2:0 14px 30px -14px rgba(16,42,78,.20);
  --header-h:72px;
  --sec-y:96px;
}

*,*::before,*::after{box-sizing:border-box}

html{scroll-behavior:smooth}

body{
  margin:0;
  font-family:-apple-system,BlinkMacSystemFont,"PingFang SC","Microsoft YaHei","Noto Sans SC",sans-serif;
  font-size:16px;
  line-height:1.75;
  color:var(--ink);
  background:var(--bg);
  -webkit-font-smoothing:antialiased;
  text-rendering:optimizeLegibility;
}

img{max-width:100%;display:block;border-style:none}
a{color:var(--brand-600);text-decoration:none;transition:color .18s ease}
a:hover{color:var(--brand-700)}
button{font:inherit;color:inherit}
input{font:inherit}
ul,ol{margin:0;padding:0;list-style:none}
h1,h2,h3,h4,p{margin:0}
svg{display:block}

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

/* ---------- 顶部导航 ---------- */
.site-header{
  position:sticky;
  top:0;
  z-index:60;
  background:#fff;
  border-bottom:1px solid transparent;
  transition:box-shadow .2s ease,border-color .2s ease;
}
.site-header.is-scrolled{
  border-bottom-color:var(--line);
  box-shadow:var(--shadow-1);
}
.header-inner{
  display:flex;
  align-items:center;
  gap:24px;
  height:var(--header-h);
}
.brand{
  display:flex;
  align-items:center;
  gap:10px;
  color:var(--ink);
  font-size:17px;
  font-weight:700;
  white-space:nowrap;
  letter-spacing:.2px;
}
.brand:hover{color:var(--brand-700)}
.brand-mark{
  width:34px;
  height:34px;
  border-radius:10px;
  background:linear-gradient(135deg,var(--brand-600),var(--brand-500));
  display:grid;
  place-items:center;
  flex:0 0 34px;
}
.brand-mark svg{width:20px;height:20px}

.nav-main{
  display:flex;
  align-items:center;
  gap:6px;
  margin-right:auto;
}
.nav-link{
  position:relative;
  padding:8px 12px;
  font-size:15px;
  font-weight:500;
  color:var(--ink-2);
  border-radius:8px;
}
.nav-link::after{
  content:"";
  position:absolute;
  left:50%;
  right:50%;
  bottom:1px;
  height:2px;
  border-radius:2px;
  background:var(--brand-600);
  transition:left .18s ease,right .18s ease;
}
.nav-link:hover{color:var(--brand-600)}
.nav-link:hover::after,
.nav-link.is-active::after{left:12px;right:12px}
.nav-link.is-active{color:var(--brand-600);font-weight:600}

.header-actions{
  display:flex;
  align-items:center;
  gap:12px;
}
.search-box{position:relative;display:flex;align-items:center}
.search-box svg{
  position:absolute;
  left:13px;
  width:16px;
  height:16px;
  stroke:var(--ink-3);
  pointer-events:none;
}
.search-box input{
  width:230px;
  height:40px;
  padding:0 16px 0 36px;
  border:1px solid var(--line);
  border-radius:var(--radius-pill);
  background:var(--surface-2);
  font-size:14px;
  color:var(--ink);
  outline:none;
  transition:border-color .18s ease,background .18s ease,box-shadow .18s ease;
}
.search-box input::placeholder{color:var(--ink-3)}
.search-box input:focus{
  border-color:var(--brand-500);
  background:#fff;
  box-shadow:0 0 0 3px rgba(30,111,196,.12);
}
.link-login{
  font-size:14px;
  font-weight:600;
  color:var(--ink-2);
  white-space:nowrap;
}
.link-login:hover{color:var(--brand-600)}

.nav-toggle{
  display:none;
  width:40px;
  height:40px;
  border:1px solid var(--line);
  border-radius:10px;
  background:#fff;
  cursor:pointer;
  align-items:center;
  justify-content:center;
  transition:border-color .18s ease,background .18s ease;
}
.nav-toggle:hover{border-color:var(--brand-500);background:var(--brand-50)}
.nav-toggle svg{width:20px;height:20px;stroke:var(--ink)}

/* ---------- 按钮体系 ---------- */
.btn{
  display:inline-flex;
  align-items:center;
  justify-content:center;
  gap:8px;
  height:46px;
  padding:0 24px;
  border-radius:var(--radius-pill);
  border:1px solid transparent;
  font-size:15px;
  font-weight:600;
  cursor:pointer;
  white-space:nowrap;
  transition:background .18s ease,color .18s ease,border-color .18s ease,transform .18s ease,box-shadow .18s ease;
}
.btn svg{width:16px;height:16px;stroke:currentColor;transition:transform .18s ease}
.btn-primary{background:var(--brand-600);color:#fff}
.btn-primary:hover{background:var(--brand-700);color:#fff;transform:translateY(-1px);box-shadow:var(--shadow-1)}
.btn-outline{background:#fff;color:var(--ink);border-color:var(--line)}
.btn-outline:hover{border-color:var(--brand-500);color:var(--brand-600);transform:translateY(-1px)}
.btn-ghost{background:transparent;color:var(--brand-600)}
.btn-ghost:hover{background:var(--brand-50)}
.btn:active{transform:scale(.98)}
.btn:focus-visible{outline:2px solid var(--brand-500);outline-offset:2px}
.btn-sm{height:38px;padding:0 16px;font-size:14px}
.btn-lg{height:52px;padding:0 30px;font-size:16px}
.btn:hover svg.icon-arrow{transform:translateX(4px)}

/* ---------- 页面横幅 ---------- */
.page-hero{
  position:relative;
  padding:56px 0 68px;
  color:#fff;
  background-image:linear-gradient(180deg,rgba(12,62,112,.88),rgba(20,88,158,.76)),url('/assets/images/backpic/back-2.png');
  background-size:cover;
  background-position:center;
  overflow:hidden;
}
.page-hero::after{
  content:"";
  position:absolute;
  left:0;right:0;bottom:0;
  height:1px;
  background:rgba(255,255,255,.18);
}
.breadcrumb{
  display:flex;
  flex-wrap:wrap;
  align-items:center;
  gap:8px;
  font-size:13px;
  color:rgba(255,255,255,.72);
  margin-bottom:22px;
}
.breadcrumb li{display:flex;align-items:center;gap:8px}
.breadcrumb li+li::before{content:"/";color:rgba(255,255,255,.42)}
.breadcrumb a{color:rgba(255,255,255,.80)}
.breadcrumb a:hover{color:#fff}
.breadcrumb .current{color:#fff;font-weight:600}

.hero-tag{
  display:inline-flex;
  align-items:center;
  gap:8px;
  height:28px;
  padding:0 14px;
  margin-bottom:18px;
  border-radius:var(--radius-pill);
  background:rgba(255,255,255,.16);
  border:1px solid rgba(255,255,255,.26);
  font-size:13px;
  font-weight:600;
  color:#fff;
}
.hero-tag .dot{
  width:6px;height:6px;border-radius:50%;
  background:var(--warm);
}
.page-hero h1{
  font-size:clamp(28px,4.4vw,46px);
  font-weight:700;
  line-height:1.22;
  letter-spacing:0;
  max-width:900px;
}
.hero-lead{
  margin-top:18px;
  max-width:720px;
  font-size:17px;
  line-height:1.8;
  color:rgba(255,255,255,.86);
}
.hero-stats{
  display:flex;
  flex-wrap:wrap;
  gap:14px;
  margin-top:28px;
}
.hero-stat{
  min-width:150px;
  padding:14px 18px;
  border-radius:14px;
  background:rgba(255,255,255,.12);
  border:1px solid rgba(255,255,255,.2);
}
.hero-stat strong{
  display:block;
  font-size:22px;
  font-weight:700;
  font-variant-numeric:tabular-nums;
  line-height:1.3;
  color:#fff;
}
.hero-stat span{
  font-size:13px;
  color:rgba(255,255,255,.72);
}

/* ---------- 横向 tab 锚点 ---------- */
.tabbar{
  position:sticky;
  top:var(--header-h);
  z-index:50;
  background:#fff;
  border-bottom:1px solid var(--line);
  box-shadow:var(--shadow-1);
}
.tabbar-inner{
  display:flex;
  align-items:center;
  gap:28px;
  overflow-x:auto;
  scrollbar-width:none;
}
.tabbar-inner::-webkit-scrollbar{display:none}
.tab-link{
  position:relative;
  flex:0 0 auto;
  padding:17px 0;
  font-size:15px;
  font-weight:600;
  color:var(--ink-2);
  border-bottom:2px solid transparent;
  transition:color .18s ease,border-color .18s ease;
}
.tab-link:hover{color:var(--brand-600)}
.tab-link.is-active{color:var(--brand-600);border-bottom-color:var(--brand-600)}

/* ---------- 板块通用 ---------- */
.section{padding:var(--sec-y) 0}
.section-alt{background:#fff}
.section-head{max-width:780px;margin-bottom:36px}
.eyebrow{
  display:inline-flex;
  align-items:center;
  height:26px;
  padding:0 12px;
  margin-bottom:14px;
  border-radius:var(--radius-pill);
  background:var(--brand-50);
  color:var(--brand-600);
  font-size:13px;
  font-weight:600;
}
.section-head h2{
  font-size:clamp(22px,3vw,32px);
  font-weight:700;
  line-height:1.3;
  color:var(--ink);
}
.section-head p{
  margin-top:14px;
  font-size:16px;
  color:var(--ink-2);
}
.rule-line{
  position:relative;
  height:1px;
  background:var(--line);
  margin:0 0 36px;
}
.rule-line::after{
  content:"";
  position:absolute;
  left:0;top:0;
  width:48px;height:1px;
  background:var(--brand-600);
}

/* ---------- 概览段落 ---------- */
.overview-grid{
  display:grid;
  grid-template-columns:1.15fr .85fr;
  gap:56px;
  align-items:start;
}
.overview-text p{
  font-size:17px;
  line-height:1.85;
  color:var(--ink-2);
}
.overview-text p+p{margin-top:20px}
.overview-text strong{color:var(--ink);font-weight:600}
.overview-aside{
  background:#fff;
  border:1px solid var(--line);
  border-radius:var(--radius-card);
  padding:26px;
  box-shadow:var(--shadow-1);
}
.overview-aside h3{
  font-size:17px;
  font-weight:700;
  margin-bottom:16px;
}
.mini-list li{
  display:flex;
  gap:12px;
  padding:13px 0;
  border-bottom:1px solid var(--line);
  font-size:15px;
  color:var(--ink-2);
}
.mini-list li:last-child{border-bottom:none;padding-bottom:0}
.mini-list .num{
  flex:0 0 26px;
  font-size:15px;
  font-weight:700;
  color:var(--brand-600);
  opacity:.65;
  font-variant-numeric:tabular-nums;
}

/* ---------- 错位要点卡 ---------- */
.offset-grid{
  display:grid;
  grid-template-columns:1fr 1fr;
  gap:24px;
  align-items:start;
}
.offset-grid .col-shift{margin-top:40px}
.feature-card{
  background:#fff;
  border:1px solid var(--line);
  border-radius:var(--radius-card);
  padding:24px;
  box-shadow:var(--shadow-1);
  transition:transform .2s ease,box-shadow .2s ease,border-color .2s ease;
}
.feature-card:hover{
  transform:translateY(-3px);
  box-shadow:var(--shadow-2);
  border-color:#D6E4F5;
}
.feature-card + .feature-card{margin-top:24px}
.icon-box{
  width:44px;
  height:44px;
  border-radius:12px;
  background:var(--brand-50);
  display:grid;
  place-items:center;
  margin-bottom:16px;
}
.icon-box svg{width:22px;height:22px;stroke:var(--brand-600)}
.icon-box.accent{background:var(--accent-soft)}
.icon-box.accent svg{stroke:var(--accent)}
.feature-card h3{font-size:19px;font-weight:600;margin-bottom:10px}
.feature-card p{font-size:15px;color:var(--ink-2);line-height:1.8}
.feature-card .tag-row{display:flex;flex-wrap:wrap;gap:8px;margin-top:16px}

/* ---------- 徽章 ---------- */
.badge{
  display:inline-flex;
  align-items:center;
  height:24px;
  padding:0 10px;
  border-radius:var(--radius-pill);
  background:var(--brand-50);
  color:var(--brand-600);
  font-size:12px;
  font-weight:600;
  white-space:nowrap;
}
.badge-accent{background:var(--accent-soft);color:var(--accent)}
.badge-warm{background:#FFF1E6;color:#C2560C}

/* ---------- 横滑卡片带 ---------- */
.card-rail{
  display:flex;
  gap:20px;
  overflow-x:auto;
  padding:4px 4px 20px;
  scroll-snap-type:x mandatory;
  scrollbar-width:none;
}
.card-rail::-webkit-scrollbar{display:none}
.rail-card{
  flex:0 0 200px;
  scroll-snap-align:start;
  background:#fff;
  border:1px solid var(--line);
  border-radius:var(--radius-card);
  overflow:hidden;
  box-shadow:var(--shadow-1);
  transition:transform .2s ease,box-shadow .2s ease;
}
.rail-card:hover{transform:translateY(-3px);box-shadow:var(--shadow-2)}
.rail-media{
  position:relative;
  aspect-ratio:9/16;
  overflow:hidden;
  background:var(--surface-2);
}
.rail-media img{width:100%;height:100%;object-fit:cover;transition:transform .3s ease}
.rail-card:hover .rail-media img{transform:scale(1.04)}
.rail-media .tag{
  position:absolute;
  left:10px;top:10px;
  height:22px;
  padding:0 9px;
  border-radius:var(--radius-pill);
  background:rgba(15,27,42,.62);
  color:#fff;
  font-size:11px;
  font-weight:600;
  display:inline-flex;
  align-items:center;
}
.rail-media .play{
  position:absolute;
  left:50%;top:50%;
  width:44px;height:44px;
  margin:-22px 0 0 -22px;
  border-radius:50%;
  background:rgba(255,255,255,.9);
  display:grid;
  place-items:center;
  opacity:0;
  transform:scale(.9);
  transition:opacity .2s ease,transform .2s ease;
}
.rail-media .play svg{width:16px;height:16px;fill:var(--brand-600);margin-left:2px}
.rail-card:hover .rail-media .play{opacity:1;transform:scale(1)}
.rail-body{padding:16px}
.rail-body h3{
  font-size:15px;
  font-weight:600;
  line-height:1.5;
  color:var(--ink);
  display:-webkit-box;
  -webkit-line-clamp:2;
  -webkit-box-orient:vertical;
  overflow:hidden;
}
.rail-card:hover .rail-body h3{color:var(--brand-600)}
.rail-body p{
  margin-top:8px;
  font-size:13px;
  color:var(--ink-3);
  display:-webkit-box;
  -webkit-line-clamp:2;
  -webkit-box-orient:vertical;
  overflow:hidden;
}

/* ---------- 图文交替 ---------- */
.split{
  display:grid;
  grid-template-columns:1fr 1fr;
  gap:56px;
  align-items:center;
}
.split + .split{margin-top:72px}
.split-media{
  border-radius:var(--radius-card);
  overflow:hidden;
  box-shadow:var(--shadow-2);
  background:var(--surface-2);
}
.split-media img{
  width:100%;
  aspect-ratio:4/3;
  object-fit:cover;
}
.split.reverse .split-media{order:2}
.split-body h3{
  font-size:clamp(20px,2.2vw,26px);
  font-weight:700;
  line-height:1.35;
  margin-bottom:16px;
}
.split-body > p{
  font-size:16px;
  color:var(--ink-2);
  line-height:1.85;
}
.check-list{margin-top:22px;display:grid;gap:12px}
.check-list li{
  display:flex;
  gap:10px;
  font-size:15px;
  color:var(--ink-2);
  line-height:1.75;
}
.check-list svg{
  flex:0 0 18px;
  width:18px;height:18px;
  margin-top:4px;
  stroke:var(--accent);
}
.split-body .text-link{
  display:inline-flex;
  align-items:center;
  gap:8px;
  margin-top:24px;
  font-size:15px;
  font-weight:600;
}
.split-body .text-link svg{width:16px;height:16px;stroke:currentColor;transition:transform .18s ease}
.split-body .text-link:hover svg{transform:translateX(4px)}

/* ---------- 参数列表 ---------- */
.spec-panel{
  background:#fff;
  border:1px solid var(--line);
  border-radius:var(--radius-card);
  padding:12px 28px;
  box-shadow:var(--shadow-1);
}
.spec-row{
  display:flex;
  gap:32px;
  justify-content:space-between;
  padding:18px 0;
  border-bottom:1px solid var(--line);
}
.spec-row:last-child{border-bottom:none}
.spec-row dt{
  flex:0 0 180px;
  font-size:15px;
  font-weight:600;
  color:var(--ink-2);
}
.spec-row dd{
  margin:0;
  font-size:15px;
  color:var(--ink);
  text-align:right;
}
.spec-row dd em{
  font-style:normal;
  color:var(--brand-600);
  font-weight:600;
  font-variant-numeric:tabular-nums;
}

/* ---------- 条目卡网格 ---------- */
.entry-grid{
  display:grid;
  grid-template-columns:repeat(3,1fr);
  gap:24px;
}
.entry-card{
  display:flex;
  flex-direction:column;
  background:#fff;
  border:1px solid var(--line);
  border-radius:var(--radius-card);
  overflow:hidden;
  box-shadow:var(--shadow-1);
  transition:transform .2s ease,box-shadow .2s ease;
}
.entry-card:hover{transform:translateY(-3px);box-shadow:var(--shadow-2)}
.entry-card .thumb{
  width:100%;
  aspect-ratio:16/10;
  object-fit:cover;
  background:var(--surface-2);
}
.entry-body{
  display:flex;
  flex-direction:column;
  flex:1;
  padding:20px;
  gap:12px;
}
.entry-body h3{
  font-size:17px;
  font-weight:600;
  line-height:1.5;
  display:-webkit-box;
  -webkit-line-clamp:2;
  -webkit-box-orient:vertical;
  overflow:hidden;
}
.entry-card:hover .entry-body h3{color:var(--brand-600)}
.entry-body p{
  font-size:14px;
  line-height:1.75;
  color:var(--ink-2);
  display:-webkit-box;
  -webkit-line-clamp:3;
  -webkit-box-orient:vertical;
  overflow:hidden;
}
.entry-meta{
  display:flex;
  align-items:center;
  justify-content:space-between;
  gap:12px;
  margin-top:auto;
  padding-top:14px;
  border-top:1px solid var(--line);
  font-size:13px;
  color:var(--ink-3);
}
.entry-meta .arrow{
  display:inline-flex;
  align-items:center;
  gap:6px;
  font-size:13px;
  font-weight:600;
  color:var(--brand-600);
}
.entry-meta .arrow svg{width:14px;height:14px;stroke:currentColor;transition:transform .18s ease}
.entry-card:hover .entry-meta .arrow svg{transform:translateX(4px)}

/* ---------- FAQ ---------- */
.faq-list{display:grid;gap:12px;max-width:900px}
.faq-item{
  background:#fff;
  border:1px solid var(--line);
  border-radius:var(--radius-card);
  box-shadow:var(--shadow-1);
  overflow:hidden;
  transition:border-color .2s ease;
}
.faq-item[open]{border-color:#CFE0F4}
.faq-item summary{
  list-style:none;
  cursor:pointer;
  display:flex;
  align-items:center;
  justify-content:space-between;
  gap:20px;
  min-height:56px;
  padding:16px 24px;
  font-size:16px;
  font-weight:600;
  color:var(--ink);
  transition:color .18s ease;
}
.faq-item summary::-webkit-details-marker{display:none}
.faq-item summary:hover{color:var(--brand-600)}
.faq-item summary:focus-visible{outline:2px solid var(--brand-500);outline-offset:-3px}
.faq-plus{
  position:relative;
  flex:0 0 16px;
  width:16px;
  height:16px;
  transition:transform .2s ease;
}
.faq-plus::before,
.faq-plus::after{
  content:"";
  position:absolute;
  background:var(--brand-600);
  border-radius:2px;
}
.faq-plus::before{left:0;right:0;top:7px;height:2px}
.faq-plus::after{top:0;bottom:0;left:7px;width:2px;transition:transform .2s ease,opacity .2s ease}
.faq-item[open] .faq-plus{transform:rotate(90deg)}
.faq-item[open] .faq-plus::after{transform:scaleY(0);opacity:0}
.faq-answer{
  padding:0 24px 22px;
  font-size:15px;
  line-height:1.85;
  color:var(--ink-2);
}
.faq-answer p{padding-top:14px;border-top:1px dashed var(--line)}

/* ---------- CTA ---------- */
.cta-band{
  display:flex;
  align-items:center;
  justify-content:space-between;
  gap:36px;
  padding:48px;
  border-radius:24px;
  background:linear-gradient(135deg,var(--brand-50),#FFFFFF 62%);
  border:1px solid #D7E6F8;
}
.cta-band h2{
  font-size:clamp(22px,2.6vw,30px);
  font-weight:700;
  line-height:1.3;
}
.cta-band p{
  margin-top:12px;
  font-size:16px;
  color:var(--ink-2);
  max-width:620px;
}
.cta-actions{display:flex;gap:14px;flex:0 0 auto}

/* ---------- 页脚 ---------- */
.site-footer{
  background:var(--ink);
  color:#fff;
  padding:64px 0 32px;
  margin-top:var(--sec-y);
}
.footer-grid{
  display:grid;
  grid-template-columns:1.5fr 1fr 1fr 1.2fr;
  gap:32px;
}
.footer-brand{
  display:flex;
  align-items:center;
  gap:10px;
  font-size:17px;
  font-weight:700;
  margin-bottom:14px;
}
.footer-about{
  font-size:14px;
  line-height:1.8;
  color:rgba(255,255,255,.66);
  max-width:340px;
}
.footer-col h4{
  font-size:15px;
  font-weight:600;
  margin-bottom:16px;
  color:#fff;
}
.footer-col a{
  display:block;
  padding:6px 0;
  font-size:14px;
  color:rgba(255,255,255,.66);
}
.footer-col a:hover{color:#fff}
.footer-col p{
  font-size:14px;
  line-height:1.75;
  color:rgba(255,255,255,.66);
  margin-bottom:8px;
}
.footer-bottom{
  display:flex;
  align-items:center;
  justify-content:space-between;
  flex-wrap:wrap;
  gap:16px;
  margin-top:48px;
  padding-top:24px;
  border-top:1px solid rgba(255,255,255,.14);
}
.footer-bottom p{
  margin:0;
  font-size:13px;
  color:rgba(255,255,255,.6);
}
.footer-links{display:flex;flex-wrap:wrap;gap:18px}
.footer-links a{font-size:13px;color:rgba(255,255,255,.66)}
.footer-links a:hover{color:#fff}

/* ---------- 移动端抽屉 ---------- */
.drawer-mask{
  position:fixed;
  inset:0;
  z-index:80;
  background:rgba(15,27,42,.45);
  opacity:0;
  visibility:hidden;
  transition:opacity .25s ease,visibility .25s ease;
}
.drawer-mask.is-open{opacity:1;visibility:visible}
.drawer{
  position:fixed;
  top:0;right:0;
  z-index:90;
  width:min(330px,86vw);
  height:100%;
  padding:22px;
  background:#fff;
  transform:translateX(100%);
  transition:transform .25s ease;
  overflow-y:auto;
  box-shadow:-8px 0 30px -18px rgba(16,42,78,.35);
}
.drawer.is-open{transform:translateX(0)}
.drawer-head{
  display:flex;
  align-items:center;
  justify-content:space-between;
  gap:12px;
  padding-bottom:18px;
  border-bottom:1px solid var(--line);
  font-size:16px;
  font-weight:700;
}
.drawer-close{
  width:36px;height:36px;
  border:1px solid var(--line);
  border-radius:10px;
  background:#fff;
  display:grid;
  place-items:center;
  cursor:pointer;
}
.drawer-close:hover{border-color:var(--brand-500);background:var(--brand-50)}
.drawer-close svg{width:16px;height:16px;stroke:var(--ink)}
.drawer-nav{padding:16px 0;display:grid;gap:4px}
.drawer-nav a{
  padding:12px 12px;
  border-radius:10px;
  font-size:15px;
  font-weight:600;
  color:var(--ink-2);
}
.drawer-nav a:hover{background:var(--brand-50);color:var(--brand-600)}
.drawer-nav a.is-active{background:var(--brand-50);color:var(--brand-600)}
.drawer-search{
  display:flex;
  align-items:center;
  gap:10px;
  margin-top:6px;
  padding:8px 0 18px;
  border-bottom:1px solid var(--line);
}
.drawer-search input{
  flex:1;
  height:44px;
  padding:0 16px;
  border:1px solid var(--line);
  border-radius:var(--radius-pill);
  background:var(--surface-2);
  font-size:14px;
  outline:none;
}
.drawer-search input:focus{border-color:var(--brand-500);background:#fff;box-shadow:0 0 0 3px rgba(30,111,196,.12)}
.drawer-actions{display:grid;gap:12px;margin-top:20px}
.drawer-actions .btn{width:100%}

/* ---------- 锚点偏移 ---------- */
section[id],div[id]{scroll-margin-top:calc(var(--header-h) + 68px)}

/* ---------- 响应式 ---------- */
@media (max-width:1279px){
  :root{--sec-y:96px}
  .header-inner{gap:18px}
  .search-box input{width:190px}
}

@media (max-width:1023px){
  :root{--header-h:64px;--sec-y:72px}
  .nav-main{display:none}
  .search-box{display:none}
  .link-login{display:none}
  .nav-toggle{display:flex}
  .overview-grid{grid-template-columns:1fr;gap:40px}
  .entry-grid{grid-template-columns:repeat(2,1fr)}
  .split{gap:36px}
  .offset-grid{grid-template-columns:1fr;gap:24px}
  .offset-grid .col-shift{margin-top:0}
  .cta-band{flex-direction:column;align-items:flex-start;padding:36px}
  .cta-actions{width:100%}
  .footer-grid{grid-template-columns:repeat(2,1fr);gap:32px}
  .tabbar-inner{gap:22px}
}

@media (max-width:767px){
  :root{--sec-y:56px}
  .container{padding:0 16px}
  .brand-text{font-size:15px}
  .page-hero{padding:40px 0 48px}
  .hero-lead{font-size:15px}
  .hero-stat{min-width:calc(50% - 7px);flex:1 1 calc(50% - 7px);padding:12px 14px}
  .hero-stat strong{font-size:19px}
  .section-head{margin-bottom:26px}
  .split{grid-template-columns:1fr;gap:24px}
  .split.reverse .split-media{order:0}
  .split + .split{margin-top:48px}
  .entry-grid{grid-template-columns:1fr}
  .rail-card{flex:0 0 176px}
  .spec-panel{padding:6px 18px}
  .spec-row{flex-direction:column;gap:6px;padding:16px 0}
  .spec-row dt{flex:none;font-size:14px}
  .spec-row dd{text-align:left}
  .cta-actions{flex-direction:column}
  .cta-actions .btn{width:100%}
  .footer-grid{grid-template-columns:1fr;gap:28px}
  .footer-bottom{flex-direction:column;align-items:flex-start}
  .faq-item summary{padding:14px 18px;font-size:15px}
  .faq-answer{padding:0 18px 18px}
}

@media (max-width:520px){
  .brand-mark{width:30px;height:30px;flex:0 0 30px}
  .page-hero h1{font-size:26px}
  .hero-stat{min-width:100%;flex:1 1 100%}
  .cta-band{padding:26px}
  .btn{padding:0 20px}
  .btn-lg{height:48px;font-size:15px}
}