/* roulang page: index */
:root{
  --bg:#0B0D10;
  --bg-block:#12161B;
  --bg-card:#1A2027;
  --bg-float:rgba(11,13,16,.82);
  --line:rgba(255,255,255,.08);
  --line-strong:rgba(255,255,255,.16);
  --primary:#FF5A1F;
  --primary-hover:#E0440C;
  --primary-soft:#FFB08A;
  --accent:#35D6A8;
  --accent-soft:#8CE8CB;
  --ink:#F2F4F3;
  --ink-2:#A8B0B8;
  --ink-3:#6E767E;
  --danger:#FF6B6B;
  --r-card:16px;
  --r-img:12px;
  --r-pill:999px;
  --r-badge:6px;
  --sh-card:0 10px 30px rgba(0,0,0,.5);
  --sh-hover:0 18px 44px rgba(0,0,0,.55);
  --ease:cubic-bezier(.2,.7,.3,1);
  --sp-1:4px;--sp-2:8px;--sp-3:12px;--sp-4:16px;--sp-5:24px;--sp-6:32px;--sp-7:48px;--sp-8:64px;--sp-9:96px;
}
*,*::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","Hiragino Sans GB","Source Han Sans SC","Microsoft YaHei",sans-serif;
  font-size:16px;
  line-height:1.85;
  letter-spacing:.01em;
  overflow-x:hidden;
  -webkit-font-smoothing:antialiased;
}
img{max-width:100%;height:auto;display:block;border-radius:var(--r-img);}
a{color:inherit;text-decoration:none;}
a:hover{color:var(--accent-soft);}
p{margin:0 0 1em;}
h1,h2,h3,h4{margin:0;font-weight:700;color:var(--ink);letter-spacing:.01em;}
ul{margin:0;padding:0;list-style:none;}
button,input{font-family:inherit;font-size:inherit;}
button{cursor:pointer;border:0;background:none;color:inherit;}
:focus-visible{outline:2px solid var(--accent);outline-offset:2px;}
::selection{background:rgba(255,90,31,.35);}
.container{
  width:100%;
  max-width:1240px;
  margin:0 auto;
  padding:0 20px;
}
@media (min-width:640px){.container{padding:0 28px;}}
@media (min-width:1024px){.container{padding:0 32px;}}
@media (min-width:1280px){.container{max-width:1300px;}}

/* ---------- Foundation 栅格微调 ---------- */
.grid-x{margin-left:-12px;margin-right:-12px;}
.grid-x>.cell{padding-left:12px;padding-right:12px;}

/* ---------- 通用排版 ---------- */
.sec{padding:48px 0;}
@media (min-width:1024px){.sec{padding:80px 0;}}
.sec-head{
  display:flex;
  align-items:flex-end;
  justify-content:space-between;
  gap:var(--sp-4);
  margin-bottom:var(--sp-6);
  padding-bottom:var(--sp-4);
  border-bottom:1px solid var(--line);
}
.sec-head h2{font-size:clamp(24px,3vw,34px);line-height:1.28;}
.sec-head .sec-sub{margin:8px 0 0;color:var(--ink-2);font-size:14px;line-height:1.6;}
.text-link{
  color:var(--accent);
  font-size:14px;
  white-space:nowrap;
  text-decoration:underline;
  text-underline-offset:3px;
  transition:color .24s var(--ease);
}
.text-link:hover{color:var(--accent-soft);}
.lead{color:var(--ink-2);max-width:760px;}

/* ---------- 按钮 ---------- */
.btn{
  display:inline-flex;
  align-items:center;
  justify-content:center;
  gap:8px;
  min-height:44px;
  padding:14px 28px;
  border-radius:var(--r-pill);
  font-size:15px;
  font-weight:600;
  line-height:1;
  transition:transform .24s var(--ease),background-color .24s var(--ease),border-color .24s var(--ease),box-shadow .24s var(--ease),color .24s var(--ease);
}
.btn-primary{background:var(--primary);color:#0B0D10;box-shadow:0 8px 24px rgba(255,90,31,.28);}
.btn-primary:hover{background:var(--primary-hover);color:#0B0D10;transform:translateY(-2px);box-shadow:0 14px 32px rgba(255,90,31,.34);}
.btn-ghost{background:transparent;border:1.5px solid var(--line-strong);color:var(--ink);}
.btn-ghost:hover{border-color:var(--accent);color:var(--accent-soft);transform:translateY(-2px);}
.btn-sm{padding:10px 20px;min-height:40px;font-size:14px;}
.btn[aria-disabled="true"],.btn:disabled{opacity:.45;transform:none;cursor:not-allowed;box-shadow:none;}

/* ---------- 徽章 ---------- */
.badge{
  display:inline-flex;
  align-items:center;
  border-radius:var(--r-badge);
  font-size:12px;
  line-height:1.6;
  padding:3px 10px;
  letter-spacing:.02em;
  white-space:nowrap;
}
.badge-cat{background:rgba(53,214,168,.14);color:var(--accent-soft);}
.badge-topic{background:transparent;border:1px solid rgba(255,90,31,.55);color:var(--primary-soft);}
.badge-line{background:rgba(255,255,255,.06);color:var(--ink-2);}

/* ---------- 悬浮胶囊导航 ---------- */
.site-header{
  position:fixed;
  top:16px;
  left:0;
  right:0;
  z-index:60;
  display:flex;
  justify-content:center;
  padding:0 16px;
  pointer-events:none;
}
.nav-shell{
  pointer-events:auto;
  width:100%;
  max-width:1180px;
  display:flex;
  align-items:center;
  justify-content:space-between;
  gap:var(--sp-5);
  padding:10px 12px 10px 18px;
  border-radius:var(--r-pill);
  border:1px solid var(--line);
  background:var(--bg-float);
  backdrop-filter:blur(8px);
  transition:background-color .24s var(--ease),border-color .24s var(--ease),box-shadow .24s var(--ease);
}
.site-header.is-scrolled .nav-shell{
  background:rgba(9,11,13,.94);
  border-color:var(--line-strong);
  box-shadow:0 14px 40px rgba(0,0,0,.55);
}
.brand{display:flex;align-items:center;gap:10px;flex:0 0 auto;}
.brand:hover{color:var(--ink);}
.brand-mark{
  width:34px;height:34px;border-radius:10px;
  background:linear-gradient(140deg,var(--primary),#FF8A4C 55%,#35D6A8);
  display:flex;align-items:center;justify-content:center;
  box-shadow:0 6px 18px rgba(255,90,31,.3);
  flex:0 0 auto;
}
.brand-mark span{display:block;width:14px;height:14px;border:2px solid #0B0D10;border-radius:4px;position:relative;}
.brand-mark span::after{content:"";position:absolute;inset:3px;background:#0B0D10;border-radius:2px;}
.brand-text{font-size:15px;font-weight:700;line-height:1.35;letter-spacing:.01em;}
.brand-text em{font-style:normal;color:var(--primary-soft);font-weight:600;font-size:12px;display:block;letter-spacing:.06em;}
.nav-links{display:none;}
@media (min-width:1024px){
  .nav-links{
    display:flex;
    align-items:center;
    gap:4px;
    flex:1 1 auto;
    justify-content:center;
  }
  .nav-links a{
    position:relative;
    padding:8px 12px;
    font-size:14px;
    color:var(--ink-2);
    border-radius:var(--r-pill);
    transition:color .24s var(--ease),background-color .24s var(--ease);
  }
  .nav-links a::after{
    content:"";
    position:absolute;
    left:12px;right:12px;bottom:2px;
    height:2px;
    background:var(--accent);
    transform:scaleX(0);
    transform-origin:left;
    transition:transform .24s var(--ease);
    border-radius:2px;
  }
  .nav-links a:hover{color:var(--ink);}
  .nav-links a:hover::after{transform:scaleX(1);}
  .nav-links a.active{color:var(--ink);}
  .nav-links a.active::after{transform:scaleX(1);}
}
.nav-cta{display:none;}
@media (min-width:1024px){.nav-cta{display:inline-flex;}}
.nav-toggle{
  display:inline-flex;
  align-items:center;
  justify-content:center;
  width:44px;height:44px;
  border-radius:var(--r-pill);
  border:1px solid var(--line-strong);
  color:var(--ink);
}
@media (min-width:1024px){.nav-toggle{display:none;}}
.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 .24s var(--ease);
}
.nav-toggle span::before{top:-6px;}
.nav-toggle span::after{top:6px;}

.drawer{
  position:fixed;
  inset:0;
  z-index:80;
  background:linear-gradient(180deg,rgba(9,11,13,.99),#0B0D10);
  transform:translateY(-100%);
  transition:transform .3s var(--ease);
  padding:88px 24px 40px;
  overflow-y:auto;
}
.drawer.is-open{transform:translateY(0);}
.drawer-close{
  position:absolute;top:20px;right:20px;
  width:44px;height:44px;border-radius:var(--r-pill);
  border:1px solid var(--line-strong);
  display:flex;align-items:center;justify-content:center;
  font-size:20px;line-height:1;color:var(--ink);
}
.drawer-list{display:flex;flex-direction:column;gap:4px;margin-bottom:var(--sp-6);}
.drawer-list a{
  display:flex;
  align-items:center;
  justify-content:space-between;
  min-height:48px;
  padding:12px 4px;
  font-size:17px;
  border-bottom:1px solid var(--line);
  color:var(--ink);
}
.drawer-list a span{color:var(--ink-3);font-size:13px;}
.drawer-cta{width:100%;}

/* ---------- Hero ---------- */
.hero{
  position:relative;
  min-height:min(88vh,760px);
  display:flex;
  align-items:center;
  padding:140px 0 96px;
  overflow:hidden;
  background:#0B0D10 url('/assets/images/backpic/back-1.webp') center/cover no-repeat;
}
.hero-mask{
  position:absolute;inset:0;
  background:linear-gradient(90deg,rgba(11,13,16,.94) 0%,rgba(11,13,16,.78) 46%,rgba(11,13,16,.58) 100%);
}
.hero-fade{
  position:absolute;left:0;right:0;bottom:0;height:120px;
  background:linear-gradient(180deg,rgba(11,13,16,0) 0%,#0B0D10 100%);
}
.hero-inner{position:relative;z-index:2;}
.hero-badge{
  display:inline-flex;align-items:center;gap:8px;
  padding:6px 14px;
  border-radius:var(--r-badge);
  border:1px solid rgba(53,214,168,.45);
  color:var(--accent-soft);
  font-size:13px;
  margin-bottom:var(--sp-5);
}
.hero-badge i{display:block;width:6px;height:6px;border-radius:50%;background:var(--accent);}
.hero h1{
  font-size:clamp(30px,4.6vw,52px);
  line-height:1.22;
  font-weight:800;
  max-width:16em;
  margin-bottom:var(--sp-5);
}
.hero h1 strong{color:var(--primary-soft);font-weight:800;}
.hero-sub{
  font-size:clamp(16px,1.6vw,19px);
  color:var(--ink-2);
  max-width:34em;
  line-height:1.8;
  margin-bottom:var(--sp-6);
}
.hero-actions{display:flex;flex-wrap:wrap;gap:var(--sp-4);margin-bottom:var(--sp-7);}
.stat-row{
  display:flex;
  flex-wrap:wrap;
  gap:0;
  border-top:1px solid var(--line);
  padding-top:var(--sp-5);
}
.stat{
  padding-right:var(--sp-5);
  margin-right:var(--sp-5);
  border-right:1px solid var(--line);
  min-width:110px;
}
.stat:last-child{border-right:0;margin-right:0;padding-right:0;}
.stat b{display:block;font-size:clamp(20px,2.4vw,26px);font-weight:700;line-height:1.3;font-family:"Inter","DIN Alternate",Arial,sans-serif;}
.stat span{display:block;font-size:13px;color:var(--ink-3);line-height:1.6;margin-top:2px;}
.hero-side{
  position:relative;
  border-radius:var(--r-card);
  border:1px solid var(--line);
  background:linear-gradient(160deg,rgba(26,32,39,.92),rgba(11,13,16,.86));
  box-shadow:var(--sh-card);
  padding:var(--sp-5);
  margin-top:var(--sp-6);
}
@media (min-width:1024px){.hero-side{margin-top:0;}}
.hero-side h2{font-size:17px;font-weight:600;margin-bottom:var(--sp-4);}
.hero-side ul li{
  display:flex;
  align-items:center;
  justify-content:space-between;
  gap:12px;
  padding:12px 0;
  border-bottom:1px solid var(--line);
  font-size:14px;
  color:var(--ink-2);
}
.hero-side ul li:last-child{border-bottom:0;}
.hero-side ul li b{color:var(--ink);font-weight:600;font-size:14px;}
.hero-caption{
  position:relative;
  margin-top:var(--sp-5);
  padding:10px 14px;
  border-left:3px solid var(--accent);
  background:rgba(53,214,168,.07);
  border-radius:0 8px 8px 0;
  font-size:13px;
  color:var(--ink-2);
  line-height:1.7;
}

/* ---------- 横滑片库 ---------- */
.rail{position:relative;}
.rail-track{
  display:flex;
  gap:var(--sp-4);
  overflow-x:auto;
  scroll-snap-type:x mandatory;
  padding:4px 2px 12px;
  scrollbar-width:none;
  -ms-overflow-style:none;
}
.rail-track::-webkit-scrollbar{display:none;}
.rail-card{
  flex:0 0 240px;
  scroll-snap-align:start;
  position:relative;
  border-radius:var(--r-card);
  overflow:hidden;
  border:1px solid var(--line);
  background:var(--bg-card);
  box-shadow:var(--sh-card);
  transition:transform .24s var(--ease),box-shadow .24s var(--ease),border-color .24s var(--ease);
}
@media (min-width:1024px){.rail-card{flex:0 0 280px;}}
.rail-card:hover{transform:translateY(-4px);box-shadow:var(--sh-hover);border-color:var(--line-strong);}
.rail-card .poster{position:relative;aspect-ratio:3/4;overflow:hidden;}
.rail-card.wide .poster{aspect-ratio:16/9;}
.rail-card .poster img{width:100%;height:100%;object-fit:cover;border-radius:0;transition:transform .4s var(--ease);}
.rail-card:hover .poster img{transform:scale(1.04);}
.rail-card .poster::after{
  content:"";position:absolute;inset:auto 0 0 0;height:58%;
  background:linear-gradient(180deg,rgba(11,13,16,0),rgba(11,13,16,.9));
}
.rail-card .cap{
  position:absolute;left:0;right:0;bottom:0;
  padding:14px 16px;
  z-index:2;
}
.rail-card .cap h3{font-size:16px;font-weight:600;line-height:1.5;}
.rail-card .cap p{margin:4px 0 0;font-size:13px;color:var(--ink-2);line-height:1.6;}
.rail-nav{display:none;}
@media (min-width:1024px){
  .rail-nav{display:block;}
  .rail-btn{
    position:absolute;
    top:calc(50% - 22px);
    width:44px;height:44px;
    border-radius:50%;
    border:1px solid var(--line-strong);
    background:rgba(11,13,16,.86);
    color:var(--ink);
    display:flex;align-items:center;justify-content:center;
    font-size:16px;
    z-index:5;
    transition:border-color .24s var(--ease),background-color .24s var(--ease),color .24s var(--ease);
  }
  .rail-btn:hover{border-color:var(--accent);color:var(--accent-soft);background:#12161B;}
  .rail-btn.prev{left:-8px;}
  .rail-btn.next{right:-8px;}
}

/* ---------- 推荐聚合区 ---------- */
.feat-grid{display:grid;gap:var(--sp-5);}
@media (min-width:1024px){
  .feat-grid{grid-template-columns:repeat(12,1fr);}
  .feat-main{grid-column:span 8;}
  .feat-side{grid-column:span 4;display:grid;grid-template-columns:1fr;gap:var(--sp-4);}
}
.card{
  position:relative;
  border-radius:var(--r-card);
  border:1px solid var(--line);
  background:var(--bg-card);
  box-shadow:var(--sh-card);
  overflow:hidden;
  transition:transform .24s var(--ease),box-shadow .24s var(--ease),border-color .24s var(--ease);
}
.card:hover{transform:translateY(-4px);box-shadow:var(--sh-hover);border-color:var(--line-strong);}
.card-accent::before{
  content:"";position:absolute;left:0;top:22px;width:3px;height:24px;background:var(--accent);border-radius:0 3px 3px 0;
}
.feat-main .card-media{aspect-ratio:16/9;overflow:hidden;}
.feat-main .card-media img{width:100%;height:100%;object-fit:cover;border-radius:0;}
.feat-main .card-body{padding:var(--sp-5);}
.feat-main h3{font-size:22px;line-height:1.5;margin:var(--sp-3) 0 var(--sp-3);}
.feat-main p{color:var(--ink-2);font-size:15px;margin-bottom:var(--sp-4);}
.mini-card{display:flex;gap:var(--sp-4);padding:var(--sp-4);align-items:center;}
.mini-card img{width:88px;height:66px;object-fit:cover;flex:0 0 auto;border-radius:8px;}
.mini-card h4{font-size:15px;line-height:1.5;font-weight:600;}
.mini-card p{margin:4px 0 0;font-size:13px;color:var(--ink-3);line-height:1.6;}

/* ---------- 专题分区 ---------- */
.topic-block{padding:var(--sp-5) 0;border-top:1px solid var(--line);}
.topic-block:first-of-type{border-top:0;padding-top:0;}
.topic-head{
  display:flex;align-items:center;justify-content:space-between;gap:var(--sp-4);
  margin-bottom:var(--sp-5);
}
.topic-head h3{font-size:20px;line-height:1.5;}
.topic-head p{margin:6px 0 0;font-size:13px;color:var(--ink-3);}
.small-cards{display:grid;gap:var(--sp-4);}
@media (min-width:640px){.small-cards{grid-template-columns:repeat(2,1fr);}}
@media (min-width:1024px){.small-cards{grid-template-columns:repeat(4,1fr);}}
.small-card{padding:var(--sp-4);border-radius:var(--r-card);border:1px solid var(--line);background:var(--bg-block);transition:transform .24s var(--ease),border-color .24s var(--ease);}
.small-card:hover{transform:translateY(-4px);border-color:var(--line-strong);}
.small-card img{aspect-ratio:16/10;object-fit:cover;margin-bottom:var(--sp-3);}
.small-card h4{font-size:16px;line-height:1.55;font-weight:600;}
.small-card p{margin:6px 0 0;font-size:13px;color:var(--ink-2);line-height:1.7;}
.bar-list{display:grid;gap:var(--sp-3);}
@media (min-width:1024px){.bar-list{grid-template-columns:repeat(2,1fr);}}
.bar-item{
  display:flex;align-items:center;gap:var(--sp-4);
  padding:12px;
  border-radius:var(--r-img);
  border:1px solid var(--line);
  background:var(--bg-block);
  transition:border-color .24s var(--ease),transform .24s var(--ease);
}
.bar-item:hover{border-color:var(--line-strong);transform:translateY(-2px);}
.bar-item img{width:96px;height:64px;object-fit:cover;border-radius:8px;flex:0 0 auto;}
.bar-item h4{font-size:16px;font-weight:600;line-height:1.5;}
.bar-item p{margin:4px 0 0;font-size:13px;color:var(--ink-3);overflow:hidden;display:-webkit-box;-webkit-line-clamp:1;-webkit-box-orient:vertical;}
.bar-item .meta{display:block;font-size:12px;color:var(--ink-3);margin-top:2px;}
.duo-grid{display:grid;gap:var(--sp-5);}
@media (min-width:768px){.duo-grid{grid-template-columns:repeat(2,1fr);}}
.duo-card img{aspect-ratio:16/9;object-fit:cover;border-radius:0;}
.duo-card .duo-body{padding:var(--sp-5);}
.duo-card h4{font-size:19px;line-height:1.5;font-weight:600;margin:var(--sp-3) 0;}
.duo-card p{color:var(--ink-2);font-size:14px;margin-bottom:var(--sp-3);}
.duo-card ul li{font-size:13px;color:var(--ink-3);line-height:1.9;padding-left:14px;position:relative;}
.duo-card ul li::before{content:"";position:absolute;left:0;top:.75em;width:5px;height:5px;border-radius:50%;background:var(--accent);}

/* ---------- 最新信息（CMS 区域） ---------- */
.news-wrap{
  background:var(--bg-block);
  border:1px solid var(--line);
  border-radius:var(--r-card);
  padding:var(--sp-5);
}
@media (min-width:1024px){.news-wrap{padding:var(--sp-6);}}
.news-grid{display:grid;gap:0;}
@media (min-width:768px){.news-grid{grid-template-columns:repeat(2,1fr);column-gap:var(--sp-7);}}
.cms-item{border-bottom:1px solid var(--line);padding:var(--sp-4) 0;}
.cms-item-link{display:block;}
.cms-item-link:hover h3{color:var(--accent-soft);}
.cms-item .badge{margin-bottom:10px;}
.cms-item h3{font-size:17px;font-weight:600;line-height:1.6;transition:color .24s var(--ease);
  overflow:hidden;display:-webkit-box;-webkit-line-clamp:2;-webkit-box-orient:vertical;}
.cms-item p{
  margin:8px 0 10px;font-size:14px;color:var(--ink-2);line-height:1.75;
  overflow:hidden;display:-webkit-box;-webkit-line-clamp:2;-webkit-box-orient:vertical;
}
.cms-meta{display:flex;flex-wrap:wrap;gap:12px;font-size:12px;color:var(--ink-3);}
.cms-empty{
  text-align:center;
  padding:var(--sp-8) var(--sp-5);
  border:1px dashed var(--line-strong);
  border-radius:var(--r-img);
}
.cms-empty p{color:var(--ink-2);margin-bottom:var(--sp-4);}

/* ---------- FAQ ---------- */
.faq-list{border-top:1px solid var(--line);}
.faq-item{border-bottom:1px solid var(--line);}
.faq-q{
  width:100%;
  display:flex;align-items:center;justify-content:space-between;gap:var(--sp-4);
  text-align:left;
  padding:20px 0 20px 16px;
  position:relative;
  font-size:17px;
  font-weight:600;
  line-height:1.6;
  color:var(--ink);
  transition:color .24s var(--ease);
}
.faq-q::before{
  content:"";position:absolute;left:0;top:24px;width:3px;height:20px;border-radius:2px;background:var(--accent);
}
.faq-q:hover{color:var(--accent-soft);}
.faq-icon{
  flex:0 0 auto;
  width:26px;height:26px;border-radius:50%;
  border:1px solid var(--line-strong);
  display:flex;align-items:center;justify-content:center;
  font-size:15px;line-height:1;color:var(--ink-2);
  transition:transform .24s var(--ease),color .24s var(--ease),border-color .24s var(--ease);
}
.faq-item.is-open .faq-icon{transform:rotate(45deg);color:var(--accent);border-color:var(--accent);}
.faq-a{
  max-height:0;
  overflow:hidden;
  transition:max-height .24s var(--ease);
}
.faq-a-inner{padding:0 0 22px 16px;font-size:15px;color:var(--ink-2);line-height:1.8;max-width:62em;}

/* ---------- CTA 带 ---------- */
.cta-band{
  background:linear-gradient(120deg,#12161B 0%,#1A2027 55%,#12161B 100%);
  border-top:1px solid var(--line);
  border-bottom:1px solid var(--line);
  padding:48px 0;
}
@media (min-width:1024px){.cta-band{padding:72px 0;}}
.cta-inner{display:flex;flex-direction:column;gap:var(--sp-6);}
@media (min-width:1024px){
  .cta-inner{flex-direction:row;align-items:center;justify-content:space-between;}
}
.cta-inner h2{font-size:clamp(22px,2.6vw,30px);line-height:1.35;margin-bottom:10px;}
.cta-inner p{color:var(--ink-2);margin:0;font-size:15px;max-width:34em;}
.cta-right{display:flex;align-items:center;gap:var(--sp-5);flex-wrap:wrap;}
.qr-box{
  width:104px;height:104px;
  border-radius:var(--r-badge);
  border:1px solid var(--line-strong);
  background:
    linear-gradient(90deg,rgba(255,255,255,.10) 1px,transparent 1px) 0 0/12px 12px,
    linear-gradient(180deg,rgba(255,255,255,.10) 1px,transparent 1px) 0 0/12px 12px,
    linear-gradient(140deg,rgba(255,90,31,.18),rgba(53,214,168,.14));
  position:relative;
  flex:0 0 auto;
}
.qr-box::after{
  content:"移动端";
  position:absolute;left:50%;top:50%;transform:translate(-50%,-50%);
  font-size:12px;color:var(--ink-2);
  background:rgba(11,13,16,.78);
  padding:2px 8px;border-radius:var(--r-badge);
}

/* ---------- 表单 ---------- */
.field label{display:block;font-size:13px;color:var(--ink-2);margin-bottom:6px;}
.field input{
  width:100%;
  min-height:48px;
  padding:12px 16px;
  border-radius:12px;
  border:1px solid var(--line-strong);
  background:#0E1216;
  color:var(--ink);
  transition:border-color .24s var(--ease),box-shadow .24s var(--ease);
}
.field input::placeholder{color:var(--ink-3);}
.field input:focus{outline:none;border-color:var(--primary);box-shadow:0 0 0 3px rgba(255,90,31,.18);}
.field input.is-error{border-color:var(--danger);}
.field .tip{display:none;font-size:13px;color:var(--danger);margin-top:6px;}
.field.has-error .tip{display:block;}
.form-row{display:flex;flex-direction:column;gap:var(--sp-3);}
@media (min-width:640px){.form-row{flex-direction:row;align-items:flex-end;}}
.form-row .field{flex:1 1 auto;}

/* ---------- 页脚 ---------- */
.site-footer{
  background:#0A0C0F;
  border-top:1px solid var(--line);
  padding:var(--sp-8) 0 var(--sp-5);
  margin-top:var(--sp-9);
}
.footer-brand{display:flex;align-items:center;gap:10px;margin-bottom:var(--sp-4);}
.footer-brand .brand-text em{font-size:12px;}
.footer-cols{display:grid;gap:var(--sp-7);}
@media (min-width:640px){.footer-cols{grid-template-columns:repeat(2,1fr);}}
@media (min-width:1024px){.footer-cols{grid-template-columns:1.4fr 1fr 1fr 1fr;}}
.footer-col h4{font-size:14px;color:var(--accent-soft);font-weight:600;margin-bottom:var(--sp-4);letter-spacing:.04em;}
.footer-col p{font-size:14px;color:var(--ink-3);line-height:1.8;margin:0;}
.footer-col ul li{margin-bottom:10px;}
.footer-col ul a{font-size:14px;color:var(--ink-2);transition:color .24s var(--ease);}
.footer-col ul a:hover{color:var(--ink);}
.footer-bottom{
  margin-top:var(--sp-7);
  padding-top:var(--sp-5);
  border-top:1px solid var(--line);
  display:flex;
  flex-wrap:wrap;
  gap:10px 24px;
  justify-content:space-between;
  font-size:13px;
  color:var(--ink-3);
}

/* ---------- 返回顶部 ---------- */
.to-top{
  position:fixed;
  right:24px;bottom:24px;
  width:48px;height:48px;
  border-radius:50%;
  border:1px solid var(--line-strong);
  background:rgba(11,13,16,.9);
  color:var(--ink);
  display:flex;align-items:center;justify-content:center;
  font-size:16px;
  opacity:0;visibility:hidden;
  transform:translateY(8px);
  transition:opacity .24s var(--ease),visibility .24s var(--ease),transform .24s var(--ease),border-color .24s var(--ease);
  z-index:50;
}
.to-top.is-show{opacity:1;visibility:visible;transform:translateY(0);}
.to-top:hover{border-color:var(--accent);color:var(--accent-soft);}

@media (max-width:639px){
  .stat{border-right:0;padding-right:0;margin-right:var(--sp-5);min-width:calc(50% - 12px);margin-bottom:var(--sp-4);}
  .hero{padding:120px 0 64px;}
  .sec-head{flex-direction:column;align-items:flex-start;}
  .cta-right{width:100%;justify-content:space-between;}
}

/* roulang page: category1 */
:root{
  --bg:#0B0D10;
  --panel:#12161B;
  --card:#1A2027;
  --overlay:rgba(11,13,16,.82);
  --stroke:rgba(255,255,255,.08);
  --stroke-strong:rgba(255,255,255,.16);
  --primary:#FF5A1F;
  --primary-hover:#E0440C;
  --primary-soft:#FFB08A;
  --accent:#35D6A8;
  --accent-soft:#8CE8CB;
  --text:#F2F4F3;
  --muted:#A8B0B8;
  --dim:#6E767E;
  --danger:#FF6B6B;
  --radius-lg:16px;
  --radius-md:12px;
  --radius-sm:8px;
  --pill:999px;
  --shadow:0 10px 30px rgba(0,0,0,.5);
  --shadow-hover:0 18px 44px rgba(0,0,0,.55);
  --ease:cubic-bezier(.2,.7,.3,1);
  --ease-time:.24s;
  --s1:4px; --s2:8px; --s3:12px; --s4:16px; --s5:24px; --s6:32px; --s7:48px; --s8:64px; --s9:96px;
}
*,*::before,*::after{box-sizing:border-box;}
html{-webkit-text-size-adjust:100%;scroll-behavior:smooth;}
body{
  margin:0;
  background:var(--bg);
  color:var(--text);
  font-family:-apple-system,"PingFang SC","Hiragino Sans GB","Source Han Sans SC","Microsoft YaHei",sans-serif;
  font-size:16px;
  line-height:1.85;
  font-variant-numeric:tabular-nums;
  -webkit-font-smoothing:antialiased;
  overflow-x:hidden;
}
body,button,input,textarea,select{
  font-family:-apple-system,"PingFang SC","Hiragino Sans GB","Source Han Sans SC","Microsoft YaHei",sans-serif;
}
h1,h2,h3,h4,h5,p,ul,ol,figure{margin:0;padding:0;}
ul,ol{list-style:none;}
a{color:inherit;text-decoration:none;}
img{max-width:100%;display:block;border-radius:var(--radius-md);}
button{background:none;border:0;color:inherit;cursor:pointer;}
h1,h2,h3,h4{color:var(--text);letter-spacing:.01em;}
h1{font-size:clamp(30px,4.6vw,52px);font-weight:800;line-height:1.22;margin:0;}
h2{font-size:clamp(24px,3vw,34px);font-weight:700;line-height:1.28;margin:0;}
h3{font-size:21px;font-weight:600;line-height:1.4;margin:0;}
h4{font-size:16px;font-weight:600;line-height:1.5;margin:0;}
p{font-size:16px;line-height:1.85;color:var(--muted);}
strong{color:var(--text);font-weight:600;}
a:focus-visible,button:focus-visible,input:focus-visible{outline:2px solid var(--accent);outline-offset:2px;border-radius:6px;}

.container{width:100%;max-width:1240px;margin:0 auto;padding:0 20px;}
@media(min-width:640px){.container{padding:0 28px;}}
@media(min-width:1024px){.container{padding:0 32px;}}
@media(min-width:1280px){.container{max-width:1320px;}}

/* ============ 悬浮胶囊导航 ============ */
.site-header{
  position:fixed;top:16px;left:0;right:0;z-index:80;
  display:flex;justify-content:center;
  padding:0 16px;
  pointer-events:none;
}
.nav-shell{
  pointer-events:auto;
  width:100%;max-width:1240px;
  display:flex;align-items:center;gap:18px;
  padding:10px 12px 10px 18px;
  border-radius:var(--pill);
  background:rgba(11,13,16,.62);
  border:1px solid var(--stroke);
  backdrop-filter:blur(8px);
  -webkit-backdrop-filter:blur(8px);
  transition:background var(--ease-time) var(--ease),box-shadow var(--ease-time) var(--ease),border-color var(--ease-time) var(--ease);
}
.site-header.scrolled .nav-shell{
  background:rgba(11,13,16,.9);
  border-color:var(--stroke-strong);
  box-shadow:0 12px 34px rgba(0,0,0,.5);
}
.brand{display:flex;align-items:center;gap:10px;flex:0 0 auto;}
.brand-mark{
  width:30px;height:30px;border-radius:9px;
  background:linear-gradient(135deg,var(--primary),#B32C00);
  display:grid;place-items:center;
  position:relative;flex:0 0 auto;
}
.brand-mark span{
  width:12px;height:12px;display:block;
  border:2px solid #0B0D10;border-radius:3px;
  transform:rotate(45deg);
}
.brand-text{
  font-size:16px;font-weight:700;color:var(--text);white-space:nowrap;letter-spacing:.01em;
}
.brand-text em{font-style:normal;color:var(--primary-soft);margin-left:2px;}
.nav-links{display:none;}
@media(min-width:1024px){
  .nav-links{display:flex;align-items:center;gap:4px;flex:1 1 auto;justify-content:center;flex-wrap:nowrap;}
  .nav-links a{
    position:relative;
    display:inline-block;
    padding:8px 12px;
    font-size:14.5px;color:var(--muted);white-space:nowrap;
    border-radius:var(--pill);
    transition:color var(--ease-time) var(--ease);
  }
  .nav-links a::after{
    content:"";position:absolute;left:12px;right:12px;bottom:3px;height:2px;
    background:var(--accent);border-radius:2px;
    transform:scaleX(0);transform-origin:left;transition:transform var(--ease-time) var(--ease);
  }
  .nav-links a:hover{color:var(--text);}
  .nav-links a:hover::after{transform:scaleX(1);}
  .nav-links a.active{color:var(--text);}
  .nav-links a.active::after{transform:scaleX(1);}
}
.nav-cta{display:none;}
@media(min-width:1024px){
  .nav-cta{
    display:inline-flex;align-items:center;justify-content:center;
    flex:0 0 auto;
    padding:11px 22px;border-radius:var(--pill);
    background:var(--primary);color:#0B0D10;
    font-size:14.5px;font-weight:700;white-space:nowrap;
    transition:background var(--ease-time) var(--ease),transform var(--ease-time) var(--ease);
  }
  .nav-cta:hover{background:var(--primary-hover);transform:translateY(-1px);}
  .nav-cta:active{transform:translateY(0);}
}
.nav-toggle{
  margin-left:auto;
  width:44px;height:44px;border-radius:50%;
  border:1px solid var(--stroke-strong);
  display:grid;place-items:center;gap:4px;flex:0 0 auto;
}
.nav-toggle span{display:block;width:17px;height:2px;background:var(--text);border-radius:2px;transition:transform var(--ease-time) var(--ease),opacity var(--ease-time) var(--ease);}
.nav-toggle[aria-expanded="true"] span:nth-child(1){transform:translateY(6px) rotate(45deg);}
.nav-toggle[aria-expanded="true"] span:nth-child(2){opacity:0;}
.nav-toggle[aria-expanded="true"] span:nth-child(3){transform:translateY(-6px) rotate(-45deg);}
@media(min-width:1024px){.nav-toggle{display:none;}}

.mobile-drawer{
  pointer-events:auto;
  position:fixed;top:0;left:0;right:0;
  z-index:79;
  background:rgba(11,13,16,.98);
  border-bottom:1px solid var(--stroke-strong);
  padding:88px 24px 32px;
  transform:translateY(-102%);
  transition:transform .3s var(--ease);
  max-height:100vh;overflow-y:auto;
}
.mobile-drawer.open{transform:translateY(0);}
.mobile-drawer a{
  display:flex;align-items:center;
  min-height:44px;
  padding:12px 4px;
  font-size:16px;color:var(--muted);
  border-bottom:1px solid var(--stroke);
}
.mobile-drawer a.active{color:var(--accent);}
.mobile-drawer .drawer-cta{
  margin-top:20px;
  justify-content:center;
  background:var(--primary);color:#0B0D10;
  font-weight:700;border-radius:var(--pill);border-bottom:0;
  min-height:48px;
}
@media(min-width:1024px){.mobile-drawer{display:none;}}

/* ============ 通用按钮 / 徽章 ============ */
.btn{
  display:inline-flex;align-items:center;justify-content:center;gap:8px;
  padding:14px 28px;min-height:48px;
  border-radius:var(--pill);
  font-size:15px;font-weight:700;
  transition:background var(--ease-time) var(--ease),color var(--ease-time) var(--ease),transform var(--ease-time) var(--ease),border-color var(--ease-time) var(--ease),box-shadow var(--ease-time) var(--ease);
  border:1.5px solid transparent;
}
.btn-primary{background:var(--primary);color:#0B0D10;box-shadow:0 8px 24px rgba(255,90,31,.22);}
.btn-primary:hover{background:var(--primary-hover);transform:translateY(-2px);box-shadow:0 14px 32px rgba(255,90,31,.28);}
.btn-primary:active{transform:translateY(0);}
.btn-ghost{background:transparent;color:var(--text);border-color:var(--stroke-strong);}
.btn-ghost:hover{border-color:var(--text);background:rgba(255,255,255,.05);transform:translateY(-2px);}
.btn-ghost:active{transform:translateY(0);}
.btn-text{
  display:inline-flex;align-items:center;gap:6px;
  color:var(--accent);font-size:14.5px;font-weight:600;
  text-decoration:underline;text-underline-offset:3px;text-decoration-thickness:1px;
}
.btn-text:hover{color:var(--accent-soft);}
.btn[disabled],.btn.is-disabled{opacity:.45;pointer-events:none;transform:none;}

.badge{
  display:inline-flex;align-items:center;gap:6px;
  padding:5px 12px;border-radius:6px;
  font-size:12.5px;font-weight:600;line-height:1.4;
  background:rgba(53,214,168,.12);
  color:var(--accent-soft);
  border:1px solid rgba(53,214,168,.24);
}
.badge-outline{
  background:transparent;color:var(--primary-soft);
  border:1px solid rgba(255,90,31,.42);
}
.badge-plain{
  background:rgba(255,255,255,.05);color:var(--muted);border:1px solid var(--stroke);
}

/* ============ 分类头 Hero ============ */
.cat-hero{
  position:relative;
  min-height:320px;
  display:flex;align-items:flex-end;
  padding:132px 0 56px;
  overflow:hidden;
  border-bottom:1px solid var(--stroke);
}
.cat-hero-bg{
  position:absolute;inset:0;
  background-image:url(/assets/images/backpic/back-2.png);
  background-size:cover;background-position:center;
  transform:scale(1.03);
}
.cat-hero::after{
  content:"";position:absolute;inset:0;
  background:linear-gradient(180deg,rgba(11,13,16,.88) 0%,rgba(11,13,16,.66) 42%,rgba(11,13,16,.96) 100%);
}
.cat-hero .container{position:relative;z-index:2;}
.breadcrumb{
  display:flex;flex-wrap:wrap;align-items:center;gap:8px;
  font-size:13.5px;color:var(--dim);margin-bottom:22px;
}
.breadcrumb a{color:var(--muted);transition:color var(--ease-time) var(--ease);}
.breadcrumb a:hover{color:var(--accent);}
.breadcrumb .sep{color:var(--dim);}
.breadcrumb .current{color:var(--text);}
.cat-hero h1{max-width:920px;margin:18px 0 16px;}
.cat-hero h1 .hl{color:var(--primary-soft);}
.cat-hero .lead{
  max-width:640px;font-size:17px;color:var(--muted);line-height:1.8;
}
.cat-hero .hero-actions{display:flex;flex-wrap:wrap;gap:14px;margin-top:30px;}

/* ============ 数据条 ============ */
.stat-strip{
  background:var(--panel);
  border-bottom:1px solid var(--stroke);
  padding:26px 0;
}
.stat-strip .stat-inner{
  display:grid;grid-template-columns:repeat(2,minmax(0,1fr));gap:20px 12px;
}
@media(min-width:768px){.stat-strip .stat-inner{grid-template-columns:repeat(4,minmax(0,1fr));}}
.stat{position:relative;padding-left:16px;}
.stat::before{
  content:"";position:absolute;left:0;top:6px;width:3px;height:26px;
  background:var(--accent);border-radius:2px;
}
.stat .k{font-size:13px;color:var(--dim);line-height:1.5;}
.stat .v{font-size:22px;font-weight:700;color:var(--text);line-height:1.35;letter-spacing:.01em;}
@media(min-width:1024px){.stat .v{font-size:26px;}}

/* ============ 板块 ============ */
.section{padding:48px 0;}
@media(min-width:1024px){.section{padding:84px 0;}}
.section.alt{background:var(--panel);border-top:1px solid var(--stroke);border-bottom:1px solid var(--stroke);}
.section-head{max-width:760px;margin-bottom:32px;}
@media(min-width:1024px){.section-head{margin-bottom:48px;}}
.section-head h2{margin-bottom:14px;}
.section-head p{font-size:16.5px;}
.section-head .eyebrow{
  display:inline-block;font-size:13px;font-weight:600;color:var(--accent);
  letter-spacing:.1em;margin-bottom:12px;
}

/* ============ 图文交替 ============ */
.split-row{
  display:grid;
  grid-template-columns:1fr;
  gap:24px;
  align-items:center;
  padding:24px 0;
}
@media(min-width:1024px){
  .split-row{grid-template-columns:minmax(0,1.05fr) minmax(0,1fr);gap:56px;padding:36px 0;}
  .split-row.reverse .split-media{order:2;}
  .split-row.reverse .split-body{order:1;}
}
.split-media{
  position:relative;
  border-radius:var(--radius-lg);
  overflow:hidden;
  border:1px solid var(--stroke);
  box-shadow:var(--shadow);
  background:linear-gradient(140deg,#242B33 0%,#141A20 100%);
  aspect-ratio:16/9;
}
.split-media img{width:100%;height:100%;object-fit:cover;border-radius:0;transition:transform .5s var(--ease);}
.split-media:hover img{transform:scale(1.04);}
.split-media .media-caption{
  position:absolute;left:0;right:0;bottom:0;
  padding:14px 18px;
  background:linear-gradient(180deg,rgba(11,13,16,0) 0%,rgba(11,13,16,.88) 100%);
  font-size:13.5px;color:var(--muted);
}
.split-body .step-no{
  display:inline-flex;align-items:center;justify-content:center;
  width:30px;height:30px;border-radius:8px;
  background:rgba(255,90,31,.14);color:var(--primary-soft);
  font-size:14px;font-weight:700;margin-bottom:16px;
  border:1px solid rgba(255,90,31,.3);
}
.split-body h3{margin-bottom:14px;font-size:22px;}
.split-body p{margin-bottom:14px;}
.split-body ul{margin-top:16px;display:grid;gap:10px;}
.split-body ul li{
  position:relative;padding-left:22px;
  font-size:15.5px;color:var(--muted);line-height:1.8;
}
.split-body ul li::before{
  content:"";position:absolute;left:0;top:12px;
  width:8px;height:2px;background:var(--accent);border-radius:2px;
}
.split-body ul li strong{color:var(--text);}

/* ============ 列表条卡 ============ */
.list-cards{display:grid;grid-template-columns:1fr;gap:16px;}
@media(min-width:768px){.list-cards{grid-template-columns:repeat(2,minmax(0,1fr));gap:20px;}}
.list-card{
  position:relative;
  display:flex;gap:16px;align-items:flex-start;
  padding:18px;
  background:var(--card);
  border:1px solid var(--stroke);
  border-radius:var(--radius-lg);
  transition:transform var(--ease-time) var(--ease),box-shadow var(--ease-time) var(--ease),border-color var(--ease-time) var(--ease);
}
.list-card::before{
  content:"";position:absolute;left:0;top:18px;width:3px;height:24px;background:var(--accent);border-radius:2px;
}
.list-card:hover{transform:translateY(-4px);box-shadow:var(--shadow-hover);border-color:var(--stroke-strong);}
.list-card .thumb{
  flex:0 0 auto;width:96px;height:64px;border-radius:8px;overflow:hidden;
  background:linear-gradient(140deg,#26303A,#151B21);
}
.list-card .thumb img{width:100%;height:100%;object-fit:cover;border-radius:0;}
.list-card .txt h4{margin-bottom:6px;font-size:16.5px;}
.list-card .txt p{font-size:14px;line-height:1.7;color:var(--dim);}
.list-card .meta{margin-top:8px;font-size:13px;color:var(--dim);display:flex;gap:12px;flex-wrap:wrap;}

/* ============ 提示框 ============ */
.notice{
  margin-top:28px;
  padding:20px 22px;
  border-left:3px solid var(--accent);
  background:rgba(53,214,168,.07);
  border-radius:0 var(--radius-md) var(--radius-md) 0;
  font-size:15px;color:var(--muted);line-height:1.85;
}
.notice strong{color:var(--accent-soft);}

/* ============ FAQ ============ */
.faq{border-top:1px solid var(--stroke);}
.faq-item{border-bottom:1px solid var(--stroke);}
.faq-q{
  width:100%;
  display:flex;align-items:center;justify-content:space-between;gap:18px;
  padding:22px 0 22px 18px;
  text-align:left;
  position:relative;
  font-size:17px;font-weight:600;color:var(--text);line-height:1.6;
  transition:color var(--ease-time) var(--ease);
}
.faq-q::before{
  content:"";position:absolute;left:0;top:24px;width:3px;height:20px;background:var(--accent);border-radius:2px;
}
.faq-q:hover{color:var(--primary-soft);}
.faq-icon{
  flex:0 0 auto;position:relative;width:18px;height:18px;
}
.faq-icon::before,.faq-icon::after{
  content:"";position:absolute;left:0;top:8px;width:18px;height:2px;background:var(--accent);border-radius:2px;
  transition:transform var(--ease-time) var(--ease),opacity var(--ease-time) var(--ease);
}
.faq-icon::after{transform:rotate(90deg);}
.faq-item.is-open .faq-icon::after{transform:rotate(0deg);opacity:0;}
.faq-a{
  max-height:0;overflow:hidden;
  transition:max-height var(--ease-time) var(--ease);
}
.faq-a p{
  padding:0 32px 24px 18px;
  font-size:15px;line-height:1.8;color:var(--muted);
}

/* ============ CTA 带 ============ */
.cta-band{
  background:linear-gradient(120deg,#161B21 0%,#0F1317 60%,#161B21 100%);
  border-top:1px solid var(--stroke);
  border-bottom:1px solid var(--stroke);
  padding:48px 0;
}
@media(min-width:1024px){.cta-band{padding:72px 0;}}
.cta-inner{
  display:flex;flex-direction:column;gap:24px;
  align-items:flex-start;justify-content:space-between;
}
@media(min-width:1024px){.cta-inner{flex-direction:row;align-items:center;gap:48px;}}
.cta-inner h2{font-size:clamp(22px,2.6vw,30px);margin-bottom:12px;}
.cta-inner p{max-width:600px;font-size:16px;}
.cta-actions{display:flex;flex-wrap:wrap;gap:14px;flex:0 0 auto;}

/* ============ 页脚 ============ */
.site-footer{
  background:#080A0C;
  border-top:1px solid var(--stroke);
  padding:56px 0 28px;
}
@media(min-width:1024px){.site-footer{padding:72px 0 32px;}}
.footer-cols{
  display:grid;grid-template-columns:1fr;gap:32px;
}
@media(min-width:640px){.footer-cols{grid-template-columns:repeat(2,minmax(0,1fr));}}
@media(min-width:1024px){.footer-cols{grid-template-columns:1.4fr 1fr 1fr 1.2fr;gap:40px;}}
.footer-brand{display:flex;align-items:center;gap:10px;margin-bottom:16px;}
.footer-col h4{
  font-size:14px;color:var(--accent-soft);font-weight:600;margin-bottom:16px;letter-spacing:.04em;
}
.footer-col p{font-size:14px;color:var(--dim);line-height:1.8;max-width:320px;}
.footer-col ul{display:grid;gap:10px;}
.footer-col ul li a{
  font-size:14px;color:var(--muted);transition:color var(--ease-time) var(--ease);
}
.footer-col ul li a:hover{color:var(--text);}
.footer-bottom{
  margin-top:40px;padding-top:22px;
  border-top:1px solid var(--stroke);
  display:flex;flex-direction:column;gap:8px;
  font-size:13px;color:var(--dim);
}
@media(min-width:640px){.footer-bottom{flex-direction:row;justify-content:space-between;align-items:center;}}

/* ============ 返回顶部 ============ */
.to-top{
  position:fixed;right:24px;bottom:24px;z-index:70;
  width:48px;height:48px;border-radius:50%;
  background:var(--card);
  border:1px solid var(--stroke-strong);
  color:var(--text);
  display:grid;place-items:center;
  box-shadow:var(--shadow);
  opacity:0;visibility:hidden;transform:translateY(10px);
  transition:opacity var(--ease-time) var(--ease),transform var(--ease-time) var(--ease),background var(--ease-time) var(--ease),visibility var(--ease-time) var(--ease);
}
.to-top.show{opacity:1;visibility:visible;transform:translateY(0);}
.to-top:hover{background:var(--primary);color:#0B0D10;border-color:var(--primary);}
.to-top svg{width:18px;height:18px;}

/* roulang page: article */
:root{
  --bg:#0B0D10;--surface:#12161B;--card:#1A2027;--float:rgba(11,13,16,.82);
  --line:rgba(255,255,255,.08);--line-strong:rgba(255,255,255,.16);
  --primary:#FF5A1F;--primary-hover:#E0440C;--primary-soft:#FFB08A;
  --accent:#35D6A8;--accent-soft:#8CE8CB;
  --text:#F2F4F3;--muted:#A8B0B8;--dim:#6E767E;--danger:#FF6B6B;
  --radius-lg:16px;--radius-md:12px;--radius-sm:8px;--pill:999px;
  --shadow:0 10px 30px rgba(0,0,0,.5);--shadow-hover:0 18px 44px rgba(0,0,0,.55);
  --ease:cubic-bezier(.2,.7,.3,1);
  --s1:4px;--s2:8px;--s3:12px;--s4:16px;--s5:24px;--s6:32px;--s7:48px;--s8:64px;--s9:96px;
}
*,*::before,*::after{box-sizing:border-box}
html{-webkit-text-size-adjust:100%;scroll-behavior:smooth}
body{
  margin:0;background:var(--bg);color:var(--text);
  font-family:-apple-system,"PingFang SC","Hiragino Sans GB","Source Han Sans SC","Microsoft YaHei",sans-serif;
  font-size:16px;line-height:1.85;-webkit-font-smoothing:antialiased;
}
img{max-width:100%;display:block;height:auto}
a{color:inherit;text-decoration:none;transition:color .24s var(--ease),opacity .24s var(--ease)}
button,input,select,textarea{font:inherit;color:inherit}
button{background:none;border:0;cursor:pointer}
ul,ol{margin:0;padding:0;list-style:none}
h1,h2,h3,h4{margin:0;line-height:1.28;font-weight:700}
p{margin:0}
:focus-visible{outline:2px solid var(--accent);outline-offset:2px;border-radius:4px}
.container{width:100%;max-width:1240px;margin:0 auto;padding:0 20px}
@media (min-width:768px){.container{padding:0 28px}}
@media (min-width:1024px){.container{padding:0 32px}}
::selection{background:rgba(255,90,31,.35);color:#fff}
.foundation-skip{display:none}

/* ---------- header / floating capsule nav ---------- */
.site-header{position:fixed;top:0;left:0;right:0;z-index:90;padding-top:16px;padding-bottom:8px;pointer-events:none}
.nav-shell{
  pointer-events:auto;display:flex;align-items:center;justify-content:space-between;gap:var(--s4);
  max-width:1240px;margin:0 auto;padding:10px 14px 10px 16px;
  border-radius:var(--pill);border:1px solid var(--line);
  background:rgba(11,13,16,.62);backdrop-filter:blur(8px);-webkit-backdrop-filter:blur(8px);
  transition:background .24s var(--ease),box-shadow .24s var(--ease),border-color .24s var(--ease);
}
.site-header.is-scrolled .nav-shell{background:rgba(11,13,16,.92);border-color:var(--line-strong);box-shadow:0 12px 32px rgba(0,0,0,.55)}
.brand{display:inline-flex;align-items:center;gap:10px;font-weight:800;font-size:16px;letter-spacing:.2px;white-space:nowrap}
.brand-mark{width:30px;height:30px;border-radius:9px;flex:0 0 30px;background:linear-gradient(135deg,var(--primary),var(--accent));display:grid;place-items:center}
.brand-mark span{width:11px;height:11px;border:2px solid #0B0D10;border-radius:3px;transform:rotate(45deg)}
.brand-text em{font-style:normal;color:var(--accent)}
.nav-links{display:flex;align-items:center;gap:2px}
.nav-links a{position:relative;display:inline-flex;align-items:center;padding:9px 12px;font-size:14px;color:var(--muted);border-radius:var(--pill)}
.nav-links a::after{content:"";position:absolute;left:12px;right:12px;bottom:5px;height:2px;border-radius:2px;background:var(--accent);transform:scaleX(0);transform-origin:left center;transition:transform .24s var(--ease)}
.nav-links a:hover{color:var(--text)}
.nav-links a:hover::after,.nav-links a.active::after{transform:scaleX(1)}
.nav-links a.active{color:var(--text)}
.nav-cta{
  display:inline-flex;align-items:center;gap:8px;padding:11px 20px;border-radius:var(--pill);
  background:var(--primary);color:#0B0D10;font-size:14px;font-weight:700;white-space:nowrap;
  transition:background .24s var(--ease),transform .24s var(--ease),box-shadow .24s var(--ease);
}
.nav-cta:hover{background:var(--primary-hover);color:#0B0D10;transform:translateY(-2px);box-shadow:0 12px 26px rgba(255,90,31,.28)}
.nav-close,.nav-drawer-cta{display:none}
.nav-toggle{
  display:none;width:44px;height:44px;border-radius:var(--pill);border:1px solid var(--line-strong);
  color:var(--text);place-items:center;font-size:18px;
}
.nav-toggle:hover{border-color:var(--accent);color:var(--accent)}
@media (max-width:1023px){
  .nav-cta{display:none}
  .nav-toggle{display:grid}
  .nav-links{
    position:fixed;inset:0;flex-direction:column;justify-content:flex-start;gap:4px;
    padding:96px 24px 40px;background:rgba(9,11,14,.97);backdrop-filter:blur(6px);
    transform:translateY(-100%);opacity:0;pointer-events:none;overflow-y:auto;
    transition:transform .3s var(--ease),opacity .3s var(--ease);
  }
  .nav-links.is-open{transform:translateY(0);opacity:1;pointer-events:auto}
  .nav-links a{width:100%;min-height:44px;font-size:17px;color:var(--text);padding:14px 4px;border-bottom:1px solid var(--line);border-radius:0}
  .nav-links a::after{display:none}
  .nav-drawer-cta{display:inline-flex;margin-top:var(--s5);justify-content:center;width:100%;padding:14px 20px;border-radius:var(--pill);background:var(--primary);color:#0B0D10;font-weight:700}
  .nav-close{
    display:grid;place-items:center;position:fixed;top:24px;right:22px;width:44px;height:44px;
    border-radius:var(--pill);border:1px solid var(--line-strong);background:rgba(11,13,16,.9);color:var(--text);font-size:20px;z-index:95;
  }
}

/* ---------- generic ---------- */
.btn{display:inline-flex;align-items:center;justify-content:center;gap:8px;padding:14px 28px;border-radius:var(--pill);font-size:15px;font-weight:700;transition:background .24s var(--ease),color .24s var(--ease),transform .24s var(--ease),border-color .24s var(--ease),box-shadow .24s var(--ease)}
.btn-primary{background:var(--primary);color:#0B0D10}
.btn-primary:hover{background:var(--primary-hover);color:#0B0D10;transform:translateY(-2px);box-shadow:0 14px 30px rgba(255,90,31,.3)}
.btn-ghost{border:1.5px solid var(--line-strong);color:var(--text)}
.btn-ghost:hover{border-color:var(--accent);color:var(--accent);transform:translateY(-2px)}
.btn-text{color:var(--accent);font-weight:700;text-underline-offset:3px;text-decoration:underline}
.btn-text:hover{color:var(--accent-soft)}
.btn[disabled],.btn.is-disabled{opacity:.45;transform:none;pointer-events:none}
.badge{display:inline-flex;align-items:center;gap:6px;font-size:12.5px;line-height:1;padding:7px 12px;border-radius:6px;background:rgba(53,214,168,.12);color:var(--accent-soft);border:1px solid rgba(53,214,168,.22)}
.badge-outline{background:transparent;border:1px solid rgba(255,90,31,.45);color:var(--primary-soft)}
.tag{display:inline-flex;align-items:center;padding:8px 14px;border-radius:var(--pill);border:1px solid var(--line);background:var(--surface);color:var(--muted);font-size:13.5px;transition:border-color .24s var(--ease),color .24s var(--ease),transform .24s var(--ease)}
.tag:hover{border-color:var(--accent);color:var(--accent);transform:translateY(-2px)}
.section{padding:var(--s7) 0}
@media (min-width:1024px){.section{padding:var(--s9) 0}}
.section-head{display:flex;align-items:flex-end;justify-content:space-between;gap:var(--s5);margin-bottom:var(--s6);flex-wrap:wrap}
.section-head h2{font-size:clamp(24px,3vw,34px)}
.section-head p{color:var(--muted);font-size:15px;margin-top:10px;max-width:640px}

/* ---------- page lead space ---------- */
.page-lead-space{height:104px}
@media (min-width:1024px){.page-lead-space{height:118px}}

/* ---------- breadcrumb ---------- */
.breadcrumb{display:flex;align-items:center;flex-wrap:wrap;gap:8px;font-size:13.5px;color:var(--dim)}
.breadcrumb a{color:var(--muted)}
.breadcrumb a:hover{color:var(--accent)}
.breadcrumb .sep{color:var(--dim);opacity:.7}
.breadcrumb .current{color:var(--text);max-width:420px;overflow:hidden;text-overflow:ellipsis;white-space:nowrap}

/* ---------- article head ---------- */
.article-head{padding:var(--s5) 0 var(--s6);border-bottom:1px solid var(--line)}
.article-head h1{font-size:clamp(30px,4.6vw,52px);font-weight:800;line-height:1.22;margin:var(--s4) 0 var(--s5);letter-spacing:-.5px}
.article-meta{display:flex;align-items:center;flex-wrap:wrap;gap:10px 18px;font-size:13.5px;color:var(--muted)}
.article-meta .dot{width:4px;height:4px;border-radius:50%;background:var(--dim);display:inline-block}
.article-meta i{color:var(--accent);margin-right:6px;font-size:12px}

/* ---------- article layout ---------- */
.article-layout{display:grid;grid-template-columns:minmax(0,1fr);gap:var(--s6);padding-top:var(--s6)}
@media (min-width:1024px){.article-layout{grid-template-columns:minmax(0,1fr) 220px;gap:var(--s7);padding-top:var(--s7)}}
.article-main{min-width:0;max-width:820px}
.article-aside{display:none}
@media (min-width:1024px){
  .article-aside{display:block}
  .toc-card{position:sticky;top:112px;background:var(--surface);border:1px solid var(--line);border-radius:var(--radius-lg);padding:18px 18px 20px;box-shadow:var(--shadow)}
  .toc-card h2{font-size:13px;letter-spacing:1px;color:var(--accent);font-weight:700;margin-bottom:12px}
  .toc-card a{display:block;font-size:13.5px;color:var(--muted);padding:7px 0 7px 12px;border-left:2px solid var(--line);line-height:1.5}
  .toc-card a:hover{color:var(--text);border-left-color:var(--accent)}
}
.toc-card h2{font-size:13px;letter-spacing:1px;color:var(--accent);font-weight:700;margin-bottom:12px}

/* ---------- article body ---------- */
.cms-article-body{font-size:17px;line-height:1.9;color:var(--text);word-wrap:break-word}
.cms-article-body > * + *{margin-top:1.15em}
.cms-article-body p{margin:0}
.cms-article-body h2{font-size:clamp(24px,3vw,34px);font-weight:700;line-height:1.28;margin-top:2.4em;margin-bottom:.8em;padding-left:14px;border-left:3px solid var(--accent);scroll-margin-top:112px}
.cms-article-body h3{font-size:21px;font-weight:600;line-height:1.4;margin-top:2em;margin-bottom:.7em;scroll-margin-top:112px}
.cms-article-body h4{font-size:18px;font-weight:600;margin-top:1.6em;margin-bottom:.6em;scroll-margin-top:112px}
.cms-article-body strong{color:#fff;font-weight:700}
.cms-article-body a{color:var(--accent);text-decoration:underline;text-underline-offset:3px}
.cms-article-body a:hover{color:var(--accent-soft)}
.cms-article-body ul,.cms-article-body ol{padding-left:1.4em}
.cms-article-body ul li{list-style:disc}
.cms-article-body ol li{list-style:decimal}
.cms-article-body li{line-height:1.8;margin-top:.5em}
.cms-article-body li::marker{color:var(--accent)}
.cms-article-body blockquote{margin:1.6em 0;padding:16px 20px;background:var(--surface);border-left:3px solid var(--accent);border-radius:0 var(--radius-md) var(--radius-md) 0;color:var(--muted)}
.cms-article-body blockquote p{margin:0}
.cms-article-body img{border-radius:var(--radius-md);margin:1.6em auto;box-shadow:var(--shadow)}
.cms-article-body figure{margin:1.6em 0}
.cms-article-body figcaption{font-size:13px;color:var(--dim);text-align:center;margin-top:10px}
.cms-article-body table{width:100%;border-collapse:collapse;display:block;overflow-x:auto;font-size:15px;margin:1.6em 0;border:1px solid var(--line);border-radius:var(--radius-md)}
.cms-article-body th,.cms-article-body td{padding:11px 14px;border-bottom:1px solid var(--line);text-align:left;white-space:nowrap}
.cms-article-body th{background:var(--surface);color:var(--accent-soft);font-weight:600}
.cms-article-body tr:last-child td{border-bottom:0}
.cms-article-body code{background:var(--surface);border:1px solid var(--line);border-radius:6px;padding:2px 6px;font-size:14.5px;color:var(--accent-soft)}
.cms-article-body pre{background:var(--surface);border:1px solid var(--line);border-radius:var(--radius-md);padding:16px;overflow-x:auto}
.cms-article-body pre code{background:none;border:0;padding:0;color:var(--text)}
.cms-article-body hr{border:0;border-top:1px solid var(--line);margin:2.4em 0}

.note-box{
  display:flex;gap:12px;align-items:flex-start;margin-top:var(--s6);
  background:var(--surface);border:1px solid var(--line);border-left:3px solid var(--primary);
  border-radius:var(--radius-md);padding:16px 18px;font-size:14.5px;color:var(--muted);line-height:1.75;
}
.note-box i{color:var(--primary);margin-top:5px}

.empty-state{
  border:1px dashed var(--line-strong);border-radius:var(--radius-lg);background:var(--surface);
  padding:56px 24px;text-align:center;
}
.empty-state i{font-size:30px;color:var(--dim)}
.empty-state h2{font-size:22px;margin:16px 0 10px}
.empty-state p{color:var(--muted);font-size:15px;margin-bottom:var(--s5)}

/* ---------- tags ---------- */
.tag-block{margin-top:var(--s7);padding-top:var(--s5);border-top:1px solid var(--line)}
.tag-block h2{font-size:14px;color:var(--dim);letter-spacing:1px;margin-bottom:14px;font-weight:600}
.tag-row{display:flex;flex-wrap:wrap;gap:10px}

/* ---------- related ---------- */
.related-grid{display:grid;grid-template-columns:1fr;gap:var(--s5)}
@media (min-width:768px){.related-grid{grid-template-columns:repeat(3,1fr)}}
.news-card{
  position:relative;background:var(--card);border:1px solid var(--line);border-radius:var(--radius-lg);
  overflow:hidden;box-shadow:var(--shadow);display:flex;flex-direction:column;
  transition:transform .24s var(--ease),box-shadow .24s var(--ease),border-color .24s var(--ease);
}
.news-card::before{content:"";position:absolute;left:0;top:0;width:3px;height:24px;background:var(--accent);border-radius:0 3px 3px 0}
.news-card:hover{transform:translateY(-4px);box-shadow:var(--shadow-hover);border-color:var(--line-strong)}
.news-thumb{aspect-ratio:16/9;overflow:hidden;background:linear-gradient(140deg,#1A2027,#232b34)}
.news-thumb img{width:100%;height:100%;object-fit:cover;transition:transform .4s var(--ease)}
.news-card:hover .news-thumb img{transform:scale(1.04)}
.news-body{padding:18px 20px 22px;display:flex;flex-direction:column;gap:10px;flex:1}
.news-body h3{font-size:17px;line-height:1.5;font-weight:600;display:-webkit-box;-webkit-line-clamp:2;-webkit-box-orient:vertical;overflow:hidden}
.news-body p{font-size:14px;color:var(--muted);line-height:1.75;display:-webkit-box;-webkit-line-clamp:2;-webkit-box-orient:vertical;overflow:hidden}
.news-meta{display:flex;align-items:center;justify-content:space-between;gap:10px;margin-top:auto;font-size:13px;color:var(--dim)}

/* ---------- post nav ---------- */
.post-nav{display:grid;grid-template-columns:1fr;gap:var(--s4);margin-top:var(--s7)}
@media (min-width:768px){.post-nav{grid-template-columns:1fr 1fr}}
.post-nav a{
  display:flex;flex-direction:column;gap:6px;padding:18px 20px;border-radius:var(--radius-lg);
  background:var(--surface);border:1px solid var(--line);
  transition:border-color .24s var(--ease),transform .24s var(--ease),background .24s var(--ease);
}
.post-nav a:hover{border-color:var(--accent);transform:translateY(-3px);background:var(--card)}
.post-nav span{font-size:12.5px;color:var(--dim);letter-spacing:1px}
.post-nav strong{font-size:16px;font-weight:600;color:var(--text)}

/* ---------- CTA band ---------- */
.cta-band{
  margin-top:var(--s8);background:linear-gradient(120deg,#12161B 0%,#1A2027 60%,#1d242c 100%);
  border:1px solid var(--line);border-radius:var(--radius-lg);padding:var(--s6);
  display:grid;gap:var(--s5);align-items:center;
}
@media (min-width:1024px){.cta-band{grid-template-columns:1fr auto;padding:var(--s7)}}
.cta-band h2{font-size:clamp(22px,2.6vw,30px);margin-bottom:10px}
.cta-band p{color:var(--muted);font-size:15px;max-width:560px}
.cta-actions{display:flex;flex-wrap:wrap;gap:14px}

/* ---------- footer ---------- */
.site-footer{margin-top:var(--s8);background:var(--surface);border-top:1px solid var(--line);padding:var(--s7) 0 var(--s5)}
.footer-cols{display:grid;grid-template-columns:1fr;gap:var(--s6)}
@media (min-width:768px){.footer-cols{grid-template-columns:repeat(2,1fr)}}
@media (min-width:1024px){.footer-cols{grid-template-columns:1.4fr 1fr 1fr 1.3fr}}
.footer-brand{display:flex;align-items:center;gap:10px;font-weight:800;font-size:16px;margin-bottom:14px}
.footer-brand .brand-mark{width:28px;height:28px;flex:0 0 28px}
.footer-brand em{font-style:normal;color:var(--accent)}
.footer-col p{font-size:14px;color:var(--muted);line-height:1.8}
.footer-col h4{font-size:14px;color:var(--accent);margin-bottom:14px;font-weight:600;letter-spacing:.5px}
.footer-col ul li{margin-bottom:10px}
.footer-col ul a{font-size:14px;color:var(--muted)}
.footer-col ul a:hover{color:var(--text)}
.footer-bottom{display:flex;flex-wrap:wrap;justify-content:space-between;gap:10px;margin-top:var(--s6);padding-top:var(--s4);border-top:1px solid var(--line);font-size:13px;color:var(--dim)}

/* ---------- back to top ---------- */
.to-top{
  position:fixed;right:24px;bottom:24px;width:48px;height:48px;border-radius:50%;
  display:grid;place-items:center;background:var(--primary);color:#0B0D10;font-size:17px;
  opacity:0;visibility:hidden;transform:translateY(10px);z-index:80;
  box-shadow:0 12px 28px rgba(0,0,0,.5);
  transition:opacity .24s var(--ease),transform .24s var(--ease),visibility .24s var(--ease),background .24s var(--ease);
}
.to-top.is-visible{opacity:1;visibility:visible;transform:translateY(0)}
.to-top:hover{background:var(--primary-hover)}

/* foundation overrides */
.grid-container,.grid-x,.cell{min-width:0}

/* roulang page: category2 */
:root{
  --bg:#0B0D10;
  --bg-block:#12161B;
  --bg-card:#1A2027;
  --bg-overlay:rgba(11,13,16,.82);
  --line:rgba(255,255,255,.08);
  --line-strong:rgba(255,255,255,.16);
  --primary:#FF5A1F;
  --primary-hover:#E0440C;
  --primary-soft:#FFB08A;
  --accent:#35D6A8;
  --accent-soft:#8CE8CB;
  --text:#F2F4F3;
  --text-2:#A8B0B8;
  --text-3:#6E767E;
  --danger:#FF6B6B;
  --radius-card:16px;
  --radius-img:12px;
  --radius-pill:999px;
  --radius-badge:6px;
  --shadow:0 10px 30px rgba(0,0,0,.5);
  --shadow-hover:0 18px 44px rgba(0,0,0,.55);
  --ease:cubic-bezier(.2,.7,.3,1);
  --space-1:4px; --space-2:8px; --space-3:12px; --space-4:16px;
  --space-5:24px; --space-6:32px; --space-7:48px; --space-8:64px; --space-9:96px;
}

*,*::before,*::after{box-sizing:border-box;}
html{-webkit-text-size-adjust:100%;scroll-behavior:smooth;}
body{
  margin:0;
  background:var(--bg);
  color:var(--text);
  font-family:-apple-system,"PingFang SC","Hiragino Sans GB","Source Han Sans SC","Microsoft YaHei",sans-serif;
  font-size:16px;
  line-height:1.85;
  -webkit-font-smoothing:antialiased;
  overflow-x:hidden;
}
h1,h2,h3,h4,p,ul,ol,figure{margin:0;padding:0;}
ul,ol{list-style:none;}
img{max-width:100%;display:block;border-radius:var(--radius-img);}
a{color:inherit;text-decoration:none;transition:color .24s var(--ease);}
button,input{font-family:inherit;font-size:inherit;}
button{cursor:pointer;border:0;background:none;color:inherit;}
:focus-visible{outline:2px solid var(--accent);outline-offset:2px;border-radius:4px;}

.container{
  width:100%;
  max-width:1240px;
  margin:0 auto;
  padding:0 32px;
}

/* ---------- 导航 ---------- */
.site-header{
  position:fixed;
  top:16px;left:0;right:0;
  z-index:80;
  display:flex;
  justify-content:center;
  padding:0 20px;
  pointer-events:none;
}
.nav-shell{
  pointer-events:auto;
  display:flex;
  align-items:center;
  gap:20px;
  width:auto;
  max-width:100%;
  padding:8px 10px 8px 18px;
  border-radius:var(--radius-pill);
  background:var(--bg-overlay);
  border:1px solid var(--line);
  backdrop-filter:blur(8px);
  -webkit-backdrop-filter:blur(8px);
  transition:background .3s var(--ease),border-color .3s var(--ease),box-shadow .3s var(--ease);
}
.nav-shell.is-scrolled{
  background:rgba(11,13,16,.95);
  border-color:var(--line-strong);
  box-shadow:0 14px 40px rgba(0,0,0,.55);
}
.brand{
  display:flex;
  align-items:center;
  gap:10px;
  flex:0 0 auto;
  color:var(--text);
}
.brand-mark{
  position:relative;
  width:26px;height:26px;
  border-radius:8px;
  background:linear-gradient(140deg,var(--primary) 0%,var(--primary-hover) 100%);
  display:inline-flex;
  align-items:center;
  justify-content:center;
  flex:0 0 auto;
}
.brand-mark::before{
  content:"";
  width:11px;height:11px;
  border-radius:3px;
  border:2.5px solid #0B0D10;
  border-right-color:transparent;
  border-bottom-color:transparent;
  transform:rotate(-45deg) translate(1px,1px);
  display:block;
}
.brand-text{
  font-size:15px;
  font-weight:700;
  letter-spacing:.02em;
  white-space:nowrap;
}
.brand-text em{
  font-style:normal;
  color:var(--primary-soft);
  font-weight:600;
}
.nav-links{
  display:flex;
  align-items:center;
  gap:4px;
}
.nav-links a{
  position:relative;
  display:inline-block;
  padding:8px 12px;
  font-size:14px;
  color:var(--text-2);
  border-radius:var(--radius-pill);
  white-space:nowrap;
}
.nav-links a::after{
  content:"";
  position:absolute;
  left:12px;right:12px;bottom:3px;
  height:2px;
  border-radius:2px;
  background:var(--accent);
  transform:scaleX(0);
  transform-origin:left center;
  transition:transform .24s var(--ease);
}
.nav-links a:hover{color:var(--text);}
.nav-links a:hover::after{transform:scaleX(1);}
.nav-links a.active{color:var(--text);font-weight:600;}
.nav-links a.active::after{transform:scaleX(1);}
.nav-cta{
  flex:0 0 auto;
  display:inline-flex;
  align-items:center;
  gap:8px;
  padding:10px 20px;
  border-radius:var(--radius-pill);
  background:var(--primary);
  color:#0B0D10;
  font-size:14px;
  font-weight:700;
  transition:background .24s var(--ease),transform .24s var(--ease);
}
.nav-cta:hover{background:var(--primary-hover);transform:translateY(-1px);}
.nav-cta:active{transform:translateY(0);}
.nav-toggle{
  display:none;
  width:44px;height:44px;
  border-radius:var(--radius-pill);
  align-items:center;
  justify-content:center;
  border:1px solid var(--line-strong);
  color:var(--text);
  font-size:17px;
}
.mobile-drawer{
  position:fixed;
  inset:0;
  z-index:90;
  background:rgba(11,13,16,.97);
  backdrop-filter:blur(8px);
  -webkit-backdrop-filter:blur(8px);
  padding:88px 24px 40px;
  display:flex;
  flex-direction:column;
  gap:8px;
  transform:translateY(-16px);
  opacity:0;
  visibility:hidden;
  transition:opacity .26s var(--ease),transform .26s var(--ease),visibility .26s var(--ease);
}
.mobile-drawer.is-open{opacity:1;visibility:visible;transform:translateY(0);}
.mobile-drawer a{
  display:flex;
  align-items:center;
  min-height:48px;
  padding:0 14px;
  border-radius:12px;
  font-size:16px;
  color:var(--text-2);
  border:1px solid transparent;
}
.mobile-drawer a.active,
.mobile-drawer a:hover{
  color:var(--text);
  background:rgba(255,255,255,.04);
  border-color:var(--line);
}
.drawer-close{
  position:absolute;
  top:20px;right:20px;
  width:44px;height:44px;
  border-radius:var(--radius-pill);
  border:1px solid var(--line-strong);
  display:flex;align-items:center;justify-content:center;
  font-size:18px;
  color:var(--text);
}
.drawer-cta{
  margin-top:16px;
  display:flex;align-items:center;justify-content:center;
  min-height:48px;
  border-radius:var(--radius-pill);
  background:var(--primary);
  color:#0B0D10;
  font-weight:700;
}

/* ---------- 通用区块 ---------- */
main{padding-bottom:var(--space-8);}
.section{padding:var(--space-8) 0 0;}
.section-head{
  display:flex;
  align-items:flex-end;
  justify-content:space-between;
  gap:24px;
  margin-bottom:var(--space-6);
}
.section-head h2{font-size:clamp(24px,3vw,34px);line-height:1.28;font-weight:700;letter-spacing:.01em;}
.section-head p{color:var(--text-2);font-size:15px;max-width:620px;margin-top:10px;}
.section-more{
  flex:0 0 auto;
  font-size:14px;
  color:var(--accent);
  border-bottom:1px solid rgba(53,214,168,.45);
  padding-bottom:2px;
}
.section-more:hover{color:var(--accent-soft);border-bottom-color:var(--accent-soft);}
.eyebrow{
  display:inline-flex;
  align-items:center;
  gap:8px;
  padding:6px 14px;
  border-radius:var(--radius-badge);
  border:1px solid rgba(53,214,168,.4);
  color:var(--accent-soft);
  font-size:13px;
  letter-spacing:.04em;
  margin-bottom:18px;
}
.badge{
  display:inline-flex;
  align-items:center;
  gap:6px;
  padding:4px 10px;
  border-radius:var(--radius-badge);
  font-size:12px;
  line-height:1.6;
  background:rgba(53,214,168,.12);
  color:var(--accent-soft);
}
.badge-outline{
  background:transparent;
  border:1px solid rgba(255,90,31,.5);
  color:var(--primary-soft);
}
.divider{height:1px;background:var(--line);margin:var(--space-7) 0 0;}

/* ---------- 面包屑 ---------- */
.crumb{
  margin-top:22px;
  font-size:13px;
  color:var(--text-3);
  display:flex;
  align-items:center;
  gap:8px;
  flex-wrap:wrap;
}
.crumb a{color:var(--text-2);}
.crumb a:hover{color:var(--accent);}
.crumb span.sep{color:var(--text-3);}
.crumb strong{color:var(--text);font-weight:600;}

/* ---------- 分类头 ---------- */
.cat-hero{
  position:relative;
  margin-top:104px;
  border-radius:20px;
  overflow:hidden;
  min-height:300px;
  display:flex;
  align-items:flex-end;
  background-image:url('/assets/images/backpic/back-2.png');
  background-size:cover;
  background-position:center;
  border:1px solid var(--line);
}
.cat-hero::after{
  content:"";
  position:absolute;
  inset:0;
  background:
    linear-gradient(180deg,rgba(11,13,16,.62) 0%,rgba(11,13,16,.82) 62%,rgba(11,13,16,.96) 100%),
    linear-gradient(90deg,rgba(11,13,16,.9) 0%,rgba(11,13,16,.30) 78%);
}
.cat-hero-inner{
  position:relative;
  z-index:2;
  padding:44px 40px 40px;
  max-width:820px;
}
.cat-hero h1{
  font-size:clamp(30px,4.6vw,52px);
  line-height:1.22;
  font-weight:800;
  letter-spacing:.01em;
}
.cat-hero .lede{
  margin-top:14px;
  font-size:16px;
  color:var(--text-2);
  max-width:640px;
}
.hero-meta{
  display:flex;
  flex-wrap:wrap;
  gap:12px 28px;
  margin-top:26px;
  padding-top:22px;
  border-top:1px solid var(--line);
}
.hero-meta div{min-width:96px;}
.hero-meta dt{font-size:13px;color:var(--text-3);}
.hero-meta dd{
  margin:4px 0 0;
  font-size:22px;
  font-weight:700;
  letter-spacing:.01em;
  font-family:"Inter","DIN Alternate",Arial,sans-serif;
}
.hero-meta dd small{font-size:13px;font-weight:500;color:var(--text-2);margin-left:4px;}

/* ---------- 版本节奏数据条 ---------- */
.stat-grid{
  display:grid;
  grid-template-columns:repeat(4,minmax(0,1fr));
  gap:18px;
}
.stat-card{
  position:relative;
  background:var(--bg-card);
  border:1px solid var(--line);
  border-radius:var(--radius-card);
  padding:24px 22px;
  box-shadow:var(--shadow);
  transition:transform .24s var(--ease),box-shadow .24s var(--ease),border-color .24s var(--ease);
}
.stat-card::before{
  content:"";
  position:absolute;
  left:22px;top:22px;
  width:3px;height:24px;
  border-radius:2px;
  background:var(--accent);
}
.stat-card:hover{transform:translateY(-4px);box-shadow:var(--shadow-hover);border-color:var(--line-strong);}
.stat-card h3{font-size:17px;font-weight:600;padding-left:14px;margin-bottom:10px;}
.stat-card .num{
  font-size:26px;
  font-weight:700;
  font-family:"Inter","DIN Alternate",Arial,sans-serif;
  color:var(--primary-soft);
  margin-bottom:6px;
}
.stat-card p{font-size:14px;color:var(--text-2);line-height:1.8;}

/* ---------- 时间轴 ---------- */
.timeline{
  position:relative;
  padding-left:64px;
}
.timeline::before{
  content:"";
  position:absolute;
  left:19px;top:12px;bottom:12px;
  width:2px;
  background:linear-gradient(180deg,rgba(53,214,168,.7) 0%,rgba(53,214,168,.18) 60%,rgba(255,255,255,.05) 100%);
}
.tl-item{
  position:relative;
  background:var(--bg-block);
  border:1px solid var(--line);
  border-radius:var(--radius-card);
  padding:24px 26px;
  margin-bottom:20px;
  transition:transform .24s var(--ease),border-color .24s var(--ease),box-shadow .24s var(--ease);
}
.tl-item:hover{transform:translateY(-4px);border-color:var(--line-strong);box-shadow:var(--shadow-hover);}
.tl-item:last-child{margin-bottom:0;}
.tl-num{
  position:absolute;
  left:-64px;top:22px;
  width:40px;height:40px;
  border-radius:var(--radius-pill);
  display:flex;align-items:center;justify-content:center;
  background:var(--bg);
  border:2px solid var(--accent);
  color:var(--accent-soft);
  font-size:14px;
  font-weight:700;
  font-family:"Inter","DIN Alternate",Arial,sans-serif;
}
.tl-item h3{
  font-size:20px;
  font-weight:600;
  margin-bottom:10px;
  display:flex;
  align-items:center;
  gap:10px;
  flex-wrap:wrap;
}
.tl-item > p{font-size:15px;color:var(--text-2);}
.tl-points{
  display:grid;
  grid-template-columns:repeat(2,minmax(0,1fr));
  gap:6px 24px;
  margin-top:16px;
  padding-top:16px;
  border-top:1px dashed var(--line);
}
.tl-points li{
  position:relative;
  padding-left:18px;
  font-size:14px;
  color:var(--text-2);
  line-height:1.8;
}
.tl-points li::before{
  content:"";
  position:absolute;
  left:0;top:11px;
  width:6px;height:6px;
  border-radius:50%;
  background:var(--primary);
}

/* ---------- 功能模块卡片 ---------- */
.module-grid{
  display:grid;
  grid-template-columns:repeat(12,minmax(0,1fr));
  gap:18px;
}
.module-card{
  grid-column:span 4;
  background:var(--bg-card);
  border:1px solid var(--line);
  border-radius:var(--radius-card);
  padding:24px 22px;
  box-shadow:var(--shadow);
  transition:transform .24s var(--ease),box-shadow .24s var(--ease),border-color .24s var(--ease);
}
.module-card:hover{transform:translateY(-4px);box-shadow:var(--shadow-hover);border-color:var(--line-strong);}
.module-card.wide{grid-column:span 8;}
.module-icon{
  width:42px;height:42px;
  border-radius:12px;
  display:flex;align-items:center;justify-content:center;
  background:rgba(255,90,31,.12);
  color:var(--primary-soft);
  font-size:17px;
  margin-bottom:16px;
}
.module-card h3{font-size:19px;font-weight:600;margin-bottom:10px;}
.module-card p{font-size:14px;color:var(--text-2);line-height:1.85;}
.module-tags{display:flex;flex-wrap:wrap;gap:8px;margin-top:16px;}

/* ---------- 横向对比卡 ---------- */
.hscroll{
  display:flex;
  gap:16px;
  overflow-x:auto;
  scroll-snap-type:x mandatory;
  padding-bottom:10px;
  -webkit-overflow-scrolling:touch;
}
.hscroll::-webkit-scrollbar{height:0;display:none;}
.compare-card{
  flex:0 0 300px;
  scroll-snap-align:start;
  background:var(--bg-block);
  border:1px solid var(--line);
  border-radius:var(--radius-card);
  padding:22px;
  transition:transform .24s var(--ease),border-color .24s var(--ease);
}
.compare-card:hover{transform:translateY(-4px);border-color:var(--line-strong);}
.compare-card img{
  border-radius:var(--radius-img);
  aspect-ratio:16/9;
  object-fit:cover;
  margin-bottom:16px;
}
.compare-card h3{font-size:17px;font-weight:600;margin-bottom:12px;}
.compare-list li{
  position:relative;
  padding-left:18px;
  font-size:14px;
  color:var(--text-2);
  line-height:1.8;
  margin-bottom:6px;
}
.compare-list li::before{
  content:"";
  position:absolute;
  left:0;top:11px;
  width:6px;height:6px;
  border-radius:50%;
  background:var(--accent);
}

/* ---------- 自查提示 ---------- */
.check-band{
  display:grid;
  grid-template-columns:1.15fr .85fr;
  gap:28px;
  align-items:center;
  background:linear-gradient(120deg,rgba(26,32,39,.96) 0%,rgba(18,22,27,.96) 60%,rgba(255,90,31,.10) 100%);
  border:1px solid var(--line);
  border-radius:var(--radius-card);
  padding:32px;
}
.check-band h2{font-size:clamp(22px,2.6vw,30px);line-height:1.32;font-weight:700;margin-bottom:12px;}
.check-band p{font-size:15px;color:var(--text-2);}
.check-steps{display:grid;gap:12px;}
.check-steps li{
  display:flex;
  gap:12px;
  align-items:flex-start;
  background:rgba(11,13,16,.6);
  border:1px solid var(--line);
  border-radius:var(--radius-img);
  padding:14px 16px;
  font-size:14px;
  color:var(--text-2);
}
.check-steps li b{
  flex:0 0 auto;
  width:22px;height:22px;
  border-radius:var(--radius-pill);
  background:rgba(53,214,168,.16);
  color:var(--accent-soft);
  font-size:12px;
  font-weight:700;
  display:flex;align-items:center;justify-content:center;
  margin-top:3px;
}

/* ---------- FAQ ---------- */
.faq-list{border-top:1px solid var(--line);}
.faq-item{border-bottom:1px solid var(--line);}
.faq-item summary{
  list-style:none;
  cursor:pointer;
  position:relative;
  padding:20px 44px 20px 18px;
  font-size:17px;
  font-weight:600;
  line-height:1.6;
  color:var(--text);
  transition:color .24s var(--ease);
}
.faq-item summary::-webkit-details-marker{display:none;}
.faq-item summary::before{
  content:"";
  position:absolute;
  left:0;top:24px;
  width:3px;height:20px;
  border-radius:2px;
  background:var(--accent);
}
.faq-item summary::after{
  content:"+";
  position:absolute;
  right:14px;top:18px;
  font-size:22px;
  font-weight:400;
  color:var(--accent-soft);
  line-height:1;
  transition:transform .24s var(--ease);
}
.faq-item[open] summary::after{content:"−";transform:rotate(180deg);}
.faq-item summary:hover{color:var(--primary-soft);}
.faq-answer{
  padding:0 44px 22px 18px;
  font-size:15px;
  color:var(--text-2);
  line-height:1.85;
}

/* ---------- CTA 带 ---------- */
.cta-band{
  margin-top:var(--space-8);
  background:linear-gradient(120deg,#14181D 0%,#0F1216 58%,rgba(255,90,31,.16) 100%);
  border-top:1px solid var(--line);
  border-bottom:1px solid var(--line);
  padding:56px 0;
}
.cta-inner{
  display:flex;
  align-items:center;
  justify-content:space-between;
  gap:36px;
  flex-wrap:wrap;
}
.cta-inner h2{font-size:clamp(22px,2.8vw,32px);line-height:1.3;font-weight:700;max-width:560px;}
.cta-inner p{color:var(--text-2);font-size:15px;margin-top:10px;max-width:560px;}
.cta-actions{display:flex;align-items:center;gap:18px;flex-wrap:wrap;}
.btn{
  display:inline-flex;
  align-items:center;
  justify-content:center;
  gap:8px;
  padding:14px 28px;
  border-radius:var(--radius-pill);
  font-size:15px;
  font-weight:700;
  white-space:nowrap;
  transition:background .24s var(--ease),transform .24s var(--ease),border-color .24s var(--ease),color .24s var(--ease);
}
.btn-primary{background:var(--primary);color:#0B0D10;}
.btn-primary:hover{background:var(--primary-hover);transform:translateY(-2px);}
.btn-primary:active{transform:translateY(0);}
.btn-ghost{
  border:1.5px solid var(--line-strong);
  color:var(--text);
  background:transparent;
}
.btn-ghost:hover{border-color:var(--accent);color:var(--accent-soft);transform:translateY(-2px);}
.btn-text{
  color:var(--accent);
  padding:6px 0;
  border-bottom:1px solid rgba(53,214,168,.45);
}
.btn-text:hover{color:var(--accent-soft);border-bottom-color:var(--accent-soft);}
.btn[disabled],.btn.is-disabled{opacity:.45;transform:none;cursor:not-allowed;}
.qr-box{
  width:112px;height:112px;
  border-radius:var(--radius-img);
  border:1px dashed var(--line-strong);
  background:rgba(11,13,16,.7);
  display:flex;
  align-items:center;
  justify-content:center;
  text-align:center;
  font-size:12px;
  color:var(--text-3);
  line-height:1.6;
  padding:8px;
}

/* ---------- 页脚 ---------- */
.site-footer{
  background:var(--bg-block);
  border-top:1px solid var(--line);
  padding:56px 0 28px;
  margin-top:0;
}
.footer-cols{
  display:grid;
  grid-template-columns:1.4fr 1fr 1fr 1.2fr;
  gap:36px;
  padding-bottom:36px;
}
.footer-brand{display:flex;align-items:center;gap:10px;margin-bottom:16px;}
.footer-brand .brand-mark{width:24px;height:24px;}
.footer-brand .brand-text{font-size:15px;font-weight:700;}
.footer-col p{font-size:14px;color:var(--text-2);line-height:1.85;}
.footer-col h4{
  font-size:14px;
  color:var(--accent-soft);
  font-weight:600;
  margin-bottom:16px;
  letter-spacing:.04em;
}
.footer-col ul li{margin-bottom:10px;}
.footer-col ul a{font-size:14px;color:var(--text-2);}
.footer-col ul a:hover{color:var(--text);}
.footer-bottom{
  border-top:1px solid var(--line);
  padding-top:20px;
  display:flex;
  justify-content:space-between;
  gap:16px;
  flex-wrap:wrap;
  font-size:13px;
  color:var(--text-3);
}

/* ---------- 返回顶部 ---------- */
.to-top{
  position:fixed;
  right:24px;bottom:24px;
  width:48px;height:48px;
  border-radius:var(--radius-pill);
  background:var(--primary);
  color:#0B0D10;
  display:flex;align-items:center;justify-content:center;
  font-size:17px;
  z-index:70;
  opacity:0;
  visibility:hidden;
  transform:translateY(10px);
  transition:opacity .26s var(--ease),transform .26s var(--ease),visibility .26s var(--ease),background .24s var(--ease);
}
.to-top.is-visible{opacity:1;visibility:visible;transform:translateY(0);}
.to-top:hover{background:var(--primary-hover);}

/* ---------- 响应式 ---------- */
@media (max-width:1280px){
  .module-card{grid-column:span 6;}
  .module-card.wide{grid-column:span 12;}
}
@media (max-width:1023px){
  .nav-links{display:none;}
  .nav-cta{display:none;}
  .nav-toggle{display:flex;}
  .nav-shell{padding:6px 6px 6px 16px;gap:12px;}
  .stat-grid{grid-template-columns:repeat(2,minmax(0,1fr));}
  .check-band{grid-template-columns:1fr;}
  .footer-cols{grid-template-columns:1fr 1fr;gap:28px;}
  .cat-hero-inner{padding:32px 28px 30px;}
}
@media (max-width:767px){
  .container{padding:0 20px;}
  .cat-hero{margin-top:96px;min-height:260px;}
  .section{padding-top:48px;}
  .section-head{flex-direction:column;align-items:flex-start;gap:12px;}
  .timeline{padding-left:48px;}
  .timeline::before{left:15px;}
  .tl-num{left:-48px;width:32px;height:32px;font-size:12px;top:20px;}
  .tl-points{grid-template-columns:1fr;}
  .module-card,.module-card.wide{grid-column:span 12;}
  .hero-meta{gap:10px 20px;}
  .hero-meta dd{font-size:20px;}
  .cta-inner{flex-direction:column;align-items:flex-start;}
  .footer-cols{grid-template-columns:1fr;}
  .to-top{right:16px;bottom:16px;}
}
@media (max-width:520px){
  .stat-grid{grid-template-columns:1fr;}
  .compare-card{flex:0 0 260px;}
  .cat-hero h1{font-size:28px;}
  .footer-bottom{flex-direction:column;gap:8px;}
}

/* roulang page: category3 */
:root{
  --bg:#0B0D10;
  --bg-2:#12161B;
  --card:#1A2027;
  --overlay:rgba(11,13,16,0.82);
  --line:rgba(255,255,255,0.08);
  --line-strong:rgba(255,255,255,0.16);
  --primary:#FF5A1F;
  --primary-hover:#E0440C;
  --primary-soft:#FFB08A;
  --accent:#35D6A8;
  --accent-soft:#8CE8CB;
  --text:#F2F4F3;
  --text-2:#A8B0B8;
  --text-3:#6E767E;
  --danger:#FF6B6B;
  --r-card:16px;
  --r-img:12px;
  --r-pill:999px;
  --r-badge:6px;
  --sh-card:0 10px 30px rgba(0,0,0,0.5);
  --sh-hover:0 18px 44px rgba(0,0,0,0.55);
  --ease:cubic-bezier(.2,.7,.3,1);
  --s4:4px; --s8:8px; --s12:12px; --s16:16px; --s24:24px; --s32:32px; --s48:48px; --s64:64px; --s96:96px;
}
*,*::before,*::after{box-sizing:border-box}
html{-webkit-text-size-adjust:100%;scroll-behavior:smooth}
body{
  margin:0;
  background:var(--bg);
  color:var(--text);
  font-family:-apple-system,"PingFang SC","Hiragino Sans GB","Source Han Sans SC","Microsoft YaHei",sans-serif;
  font-size:16px;
  line-height:1.85;
  font-weight:400;
  overflow-x:hidden;
}
body.is-locked{overflow:hidden}
h1,h2,h3,h4,p,figure,dl,dd{margin:0}
ul,ol{margin:0;padding:0;list-style:none}
img{max-width:100%;height:auto;display:block}
a{color:inherit;text-decoration:none}
button{font:inherit;color:inherit;background:none;border:0;cursor:pointer}
input{font:inherit}
:focus-visible{outline:2px solid var(--accent);outline-offset:2px}
::selection{background:rgba(255,90,31,.32)}

.container{width:100%;max-width:1240px;margin:0 auto;padding:0 20px}
@media (min-width:640px){.container{padding:0 28px}}
@media (min-width:1024px){.container{padding:0 32px}}
@media (min-width:1280px){.container{max-width:1280px}}

/* Foundation XY Grid 定制 */
.grid-x{margin-left:-12px;margin-right:-12px}
.grid-x>.cell{padding-left:12px;padding-right:12px}
@media (max-width:639px){
  .grid-x{margin-left:-8px;margin-right:-8px}
  .grid-x>.cell{padding-left:8px;padding-right:8px}
}

/* ---------- 悬浮胶囊导航 ---------- */
.site-header{
  position:fixed;top:16px;left:0;right:0;z-index:80;
  display:flex;justify-content:center;padding:0 16px;
  pointer-events:none;
}
.nav-shell{
  pointer-events:auto;
  width:100%;max-width:1140px;
  display:flex;align-items:center;justify-content:space-between;gap:20px;
  padding:10px 12px 10px 18px;
  background:rgba(11,13,16,.72);
  border:1px solid var(--line);
  border-radius:var(--r-pill);
  backdrop-filter:blur(8px);
  -webkit-backdrop-filter:blur(8px);
  transition:background .3s var(--ease),border-color .3s var(--ease),box-shadow .3s var(--ease);
}
.site-header.is-scrolled .nav-shell{
  background:rgba(11,13,16,.94);
  border-color:var(--line-strong);
  box-shadow:0 12px 34px rgba(0,0,0,.55);
}
.brand{display:inline-flex;align-items:center;gap:10px;flex-shrink:0}
.brand-mark{
  width:30px;height:30px;border-radius:9px;flex-shrink:0;
  background:linear-gradient(135deg,var(--primary) 0%,#FF8A4C 55%,var(--accent) 100%);
  display:inline-flex;align-items:center;justify-content:center;
  position:relative;
}
.brand-mark span{
  width:12px;height:12px;border-radius:3px;
  background:var(--bg);transform:rotate(45deg);
}
.brand-text{font-size:15px;font-weight:700;letter-spacing:.2px;white-space:nowrap}
.brand-text em{font-style:normal;color:var(--primary-soft);margin-left:2px}
.nav-links{display:flex;align-items:center;gap:4px}
.nav-links a{
  position:relative;
  display:inline-block;
  padding:8px 12px;
  font-size:14px;
  color:var(--text-2);
  border-radius:var(--r-pill);
  transition:color .2s var(--ease),background .2s var(--ease);
  white-space:nowrap;
}
.nav-links a::after{
  content:"";position:absolute;left:12px;right:12px;bottom:4px;height:2px;
  background:var(--accent);border-radius:2px;
  transform:scaleX(0);transform-origin:left;
  transition:transform .24s var(--ease);
}
.nav-links a:hover{color:var(--text)}
.nav-links a:hover::after{transform:scaleX(1)}
.nav-links a.active{color:var(--text)}
.nav-links a.active::after{transform:scaleX(1)}
.nav-cta{
  display:inline-flex;align-items:center;justify-content:center;
  min-height:40px;padding:10px 20px;
  background:var(--primary);color:#0B0D10;
  font-size:14px;font-weight:700;border-radius:var(--r-pill);
  transition:background .22s var(--ease),transform .22s var(--ease);
  white-space:nowrap;
}
.nav-cta:hover{background:var(--primary-hover);transform:translateY(-1px)}
.nav-toggle{
  display:none;width:44px;height:44px;border-radius:var(--r-pill);
  align-items:center;justify-content:center;
  border:1px solid var(--line-strong);
  background:rgba(255,255,255,.04);
}
.nav-toggle span{display:block;width:18px;height:2px;background:var(--text);position:relative}
.nav-toggle span::before,.nav-toggle span::after{
  content:"";position:absolute;left:0;width:18px;height:2px;background:var(--text)
}
.nav-toggle span::before{top:-6px}
.nav-toggle span::after{top:6px}

/* 移动抽屉 */
.drawer{
  position:fixed;inset:0;z-index:90;
  background:rgba(11,13,16,.97);
  padding:88px 24px 32px;
  transform:translateY(-100%);
  transition:transform .32s var(--ease);
  overflow-y:auto;
  display:none;
}
.drawer.is-open{transform:translateY(0)}
.drawer-close{
  position:absolute;top:20px;right:20px;
  width:44px;height:44px;border-radius:var(--r-pill);
  border:1px solid var(--line-strong);
  display:flex;align-items:center;justify-content:center;
  font-size:20px;color:var(--text-2);
}
.drawer-close:hover{color:var(--text)}
.drawer-nav a{
  display:flex;align-items:center;justify-content:space-between;
  min-height:44px;padding:14px 4px;
  font-size:16px;color:var(--text-2);
  border-bottom:1px solid var(--line);
}
.drawer-nav a.active{color:var(--primary-soft)}
.drawer-nav a:hover{color:var(--text)}
.drawer-cta{margin-top:28px}
.drawer-cta .btn{width:100%}

@media (max-width:1023px){
  .nav-links,.nav-cta{display:none}
  .nav-toggle{display:inline-flex}
  .nav-shell{padding:8px 8px 8px 16px}
  .drawer{display:block}
}

/* ---------- 按钮体系 ---------- */
.btn{
  display:inline-flex;align-items:center;justify-content:center;gap:8px;
  min-height:44px;padding:14px 28px;
  border-radius:var(--r-pill);
  font-size:15px;font-weight:600;line-height:1;
  transition:background .24s var(--ease),color .24s var(--ease),transform .24s var(--ease),border-color .24s var(--ease);
  cursor:pointer;
}
.btn-primary{background:var(--primary);color:#0B0D10}
.btn-primary:hover{background:var(--primary-hover);transform:translateY(-2px)}
.btn-primary:active{transform:translateY(0)}
.btn-ghost{background:transparent;border:1.5px solid var(--line-strong);color:var(--text)}
.btn-ghost:hover{border-color:var(--accent);color:var(--accent-soft);transform:translateY(-2px)}
.btn-text{
  display:inline-flex;align-items:center;gap:6px;
  color:var(--accent);font-size:14px;font-weight:600;
  border-bottom:1px solid transparent;padding-bottom:2px;
  transition:border-color .22s var(--ease),color .22s var(--ease)
}
.btn-text:hover{border-color:var(--accent);color:var(--accent-soft)}
.btn[disabled],.btn.is-disabled{opacity:.45;pointer-events:none;transform:none}

/* ---------- 徽章 / 标签 ---------- */
.badge{
  display:inline-flex;align-items:center;
  padding:4px 10px;border-radius:var(--r-badge);
  font-size:12px;font-weight:600;line-height:1.5;
}
.badge-accent{background:rgba(53,214,168,.14);color:var(--accent-soft)}
.badge-outline{border:1px solid rgba(255,90,31,.55);color:var(--primary-soft)}
.meta{font-size:13px;color:var(--text-3);line-height:1.6}

/* ---------- 分类头 ---------- */
.page-hero{
  position:relative;
  padding:132px 0 56px;
  background-image:linear-gradient(180deg,rgba(11,13,16,.62) 0%,rgba(11,13,16,.78) 55%,rgba(11,13,16,.98) 100%),url('/assets/images/backpic/back-3.webp');
  background-size:cover;
  background-position:center;
  min-height:300px;
  display:flex;align-items:flex-end;
}
.breadcrumb{font-size:13px;color:var(--text-3);margin-bottom:18px}
.breadcrumb a{color:var(--text-2);transition:color .2s var(--ease)}
.breadcrumb a:hover{color:var(--accent-soft)}
.breadcrumb span.sep{margin:0 8px;color:var(--text-3)}
.breadcrumb strong{font-weight:500;color:var(--text-2)}
.page-hero h1{
  font-size:clamp(30px,4.6vw,48px);
  font-weight:800;line-height:1.22;letter-spacing:.5px;
  max-width:900px;
}
.page-hero .hero-line{
  margin-top:18px;max-width:660px;
  font-size:17px;color:var(--text-2);line-height:1.8;
}
.hero-tags{display:flex;flex-wrap:wrap;gap:10px;margin-top:24px}

/* ---------- 板块 ---------- */
.section{padding:72px 0}
@media (max-width:1023px){.section{padding:56px 0}}
@media (max-width:639px){.section{padding:48px 0}}
.section-head{
  display:flex;align-items:flex-end;justify-content:space-between;gap:20px;
  margin-bottom:32px;flex-wrap:wrap;
}
.section-head h2{
  font-size:clamp(24px,3vw,34px);font-weight:700;line-height:1.28;
}
.section-head p{margin-top:10px;font-size:15px;color:var(--text-2);max-width:640px}
.section-head .head-action{flex-shrink:0}

/* ---------- 卡片族 ---------- */
.card{
  position:relative;
  background:var(--card);
  border:1px solid var(--line);
  border-radius:var(--r-card);
  overflow:hidden;
  transition:transform .24s var(--ease),box-shadow .24s var(--ease),border-color .24s var(--ease);
}
.card:hover{transform:translateY(-4px);box-shadow:var(--sh-hover);border-color:var(--line-strong)}
.card::before{
  content:"";position:absolute;left:0;top:0;width:3px;height:24px;
  background:var(--accent);border-radius:0 3px 3px 0;z-index:2;
}
.card-media{position:relative;overflow:hidden;background:linear-gradient(150deg,#1A2027,#2A2F36)}
.card-media img{width:100%;height:100%;object-fit:cover;transition:transform .4s var(--ease)}
.card:hover .card-media img{transform:scale(1.04)}
.card-body{padding:20px}
.card-body h3{font-size:20px;font-weight:600;line-height:1.45}
.card-body p{margin-top:10px;font-size:15px;color:var(--text-2);line-height:1.8}
.card-foot{
  display:flex;align-items:center;justify-content:space-between;gap:12px;
  margin-top:18px;flex-wrap:wrap;
}

/* 大卡 */
.card-feature .card-media{aspect-ratio:16/9}
.card-feature .card-body{padding:24px}
.card-feature .card-body h3{font-size:clamp(20px,2.2vw,24px)}
.card-feature .card-body p{max-width:640px}

/* 中卡 */
.card-mid .card-media{aspect-ratio:16/9}
.card-mid .card-body{padding:18px}
.card-mid .card-body h3{font-size:18px;font-weight:600}

/* 列表条卡 */
.card-row{
  display:flex;gap:16px;align-items:center;
  padding:16px;
  background:var(--card);
  border:1px solid var(--line);
  border-radius:var(--r-card);
  transition:transform .24s var(--ease),box-shadow .24s var(--ease),border-color .24s var(--ease);
}
.card-row:hover{transform:translateY(-4px);box-shadow:var(--sh-hover);border-color:var(--line-strong)}
.card-row .thumb{
  flex:0 0 96px;width:96px;height:64px;border-radius:8px;overflow:hidden;
  background:linear-gradient(150deg,#1A2027,#2A2F36);
}
.card-row .thumb img{width:100%;height:100%;object-fit:cover}
.card-row .row-body{min-width:0}
.card-row h3{font-size:16px;font-weight:600;line-height:1.5}
.card-row p{
  margin-top:6px;font-size:14px;color:var(--text-2);line-height:1.7;
  display:-webkit-box;-webkit-line-clamp:2;-webkit-box-orient:vertical;overflow:hidden;
}
.card-row .meta{margin-top:6px}
.row-stack{display:flex;flex-direction:column;gap:16px;height:100%;justify-content:space-between}

/* ---------- 横向滚动对比区 ---------- */
.compare-wrap{position:relative}
.compare-track{
  display:flex;gap:16px;
  overflow-x:auto;
  scroll-snap-type:x mandatory;
  padding:4px 4px 12px;
  margin-left:-4px;margin-right:-4px;
  scrollbar-width:none;
}
.compare-track::-webkit-scrollbar{display:none}
.compare-card{
  flex:0 0 272px;
  scroll-snap-align:start;
  background:var(--card);
  border:1px solid var(--line);
  border-radius:var(--r-card);
  padding:22px;
  transition:transform .24s var(--ease),border-color .24s var(--ease),box-shadow .24s var(--ease);
}
.compare-card:hover{transform:translateY(-4px);border-color:var(--line-strong);box-shadow:var(--sh-hover)}
.compare-card h3{font-size:18px;font-weight:600}
.compare-card .compare-sub{margin-top:8px;font-size:14px;color:var(--text-2);line-height:1.7}
.compare-list{margin-top:18px;border-top:1px solid var(--line)}
.compare-list li{
  display:flex;align-items:baseline;justify-content:space-between;gap:12px;
  padding:11px 0;border-bottom:1px solid var(--line);
  font-size:14px;
}
.compare-list li span:first-child{color:var(--text-3);flex-shrink:0}
.compare-list li span:last-child{color:var(--text);text-align:right}
.scroll-btn{
  position:absolute;top:50%;transform:translateY(-50%);
  width:44px;height:44px;border-radius:50%;
  background:rgba(11,13,16,.86);
  border:1px solid var(--line-strong);
  color:var(--text-2);
  display:inline-flex;align-items:center;justify-content:center;
  font-size:18px;line-height:1;
  transition:color .22s var(--ease),border-color .22s var(--ease),background .22s var(--ease);
  z-index:3;
}
.scroll-btn:hover{color:var(--accent-soft);border-color:var(--accent);background:rgba(11,13,16,.96)}
.scroll-btn.prev{left:-8px}
.scroll-btn.next{right:-8px}
@media (max-width:1023px){.scroll-btn{display:none}}

/* ---------- 要点 / 数据面板 ---------- */
.panel{
  background:var(--bg-2);
  border:1px solid var(--line);
  border-radius:var(--r-card);
  padding:24px;
}
.panel-media{border-radius:var(--r-img);overflow:hidden;background:linear-gradient(150deg,#1A2027,#2A2F36)}
.panel-media img{width:100%;aspect-ratio:16/10;object-fit:cover}
.point-list{margin-top:8px}
.point-list li{
  position:relative;
  padding:14px 0 14px 34px;
  border-bottom:1px solid var(--line);
}
.point-list li:last-child{border-bottom:0}
.point-list li::before{
  content:"";position:absolute;left:0;top:22px;
  width:8px;height:8px;border-radius:50%;
  background:var(--accent);box-shadow:0 0 0 4px rgba(53,214,168,.14);
}
.point-list h4{font-size:16px;font-weight:600}
.point-list p{margin-top:6px;font-size:14.5px;color:var(--text-2);line-height:1.8}
.stat-bar{
  display:grid;grid-template-columns:repeat(4,1fr);
  gap:0;margin-top:32px;
  background:var(--card);border:1px solid var(--line);border-radius:var(--r-card);
  overflow:hidden;
}
.stat-item{padding:22px 20px;border-right:1px solid var(--line)}
.stat-item:last-child{border-right:0}
.stat-item .k{font-size:13px;color:var(--text-3)}
.stat-item .v{margin-top:8px;font-size:22px;font-weight:700;color:var(--primary-soft);line-height:1.3}
@media (max-width:767px){
  .stat-bar{grid-template-columns:repeat(2,1fr)}
  .stat-item:nth-child(2){border-right:0}
  .stat-item:nth-child(1),.stat-item:nth-child(2){border-bottom:1px solid var(--line)}
}

/* ---------- FAQ ---------- */
.faq{border-top:1px solid var(--line)}
.faq-item{border-bottom:1px solid var(--line)}
.faq-q{
  width:100%;display:flex;align-items:center;justify-content:space-between;gap:16px;
  padding:20px 0 20px 14px;text-align:left;
  font-size:17px;font-weight:600;line-height:1.6;color:var(--text);
  position:relative;
  transition:color .22s var(--ease);
}
.faq-q::before{
  content:"";position:absolute;left:0;top:22px;bottom:22px;width:3px;
  background:var(--accent);border-radius:2px;opacity:.9;
}
.faq-q:hover{color:var(--accent-soft)}
.faq-icon{
  flex:0 0 24px;width:24px;height:24px;position:relative;
  transition:transform .24s var(--ease);
}
.faq-icon::before,.faq-icon::after{
  content:"";position:absolute;top:50%;left:50%;
  background:var(--text-2);border-radius:2px;
  transition:background .24s var(--ease);
}
.faq-icon::before{width:14px;height:2px;transform:translate(-50%,-50%)}
.faq-icon::after{width:2px;height:14px;transform:translate(-50%,-50%)}
.faq-item.is-open .faq-icon{transform:rotate(180deg)}
.faq-item.is-open .faq-icon::before{background:var(--accent)}
.faq-item.is-open .faq-icon::after{opacity:0}
.faq-a{
  max-height:0;overflow:hidden;
  transition:max-height .24s var(--ease);
}
.faq-a p{padding:0 0 22px 14px;font-size:15px;color:var(--text-2);line-height:1.8;max-width:820px}

/* ---------- CTA 带 ---------- */
.cta-band{
  background:linear-gradient(135deg,rgba(255,90,31,.14) 0%,rgba(53,214,168,.10) 100%),var(--bg-2);
  border:1px solid var(--line-strong);
  border-radius:var(--r-card);
  padding:40px;
  display:flex;align-items:center;justify-content:space-between;gap:32px;
  flex-wrap:wrap;
}
.cta-band h2{font-size:clamp(22px,2.8vw,30px);font-weight:700;line-height:1.3}
.cta-band p{margin-top:12px;font-size:15px;color:var(--text-2);max-width:560px}
.cta-actions{display:flex;align-items:center;gap:20px;flex-wrap:wrap}
.qr-box{
  width:112px;height:112px;border-radius:var(--r-img);flex-shrink:0;
  border:1px dashed var(--line-strong);
  background:repeating-linear-gradient(45deg,rgba(255,255,255,.045) 0 6px,rgba(255,255,255,0) 6px 12px),rgba(11,13,16,.6);
  display:flex;align-items:center;justify-content:center;
  font-size:12px;color:var(--text-3);text-align:center;padding:8px;line-height:1.5;
}
@media (max-width:767px){
  .cta-band{padding:28px 22px}
  .cta-actions{width:100%}
  .cta-actions .btn{width:100%}
}

/* ---------- 页脚 ---------- */
.site-footer{
  margin-top:72px;
  background:var(--bg-2);
  border-top:1px solid var(--line);
  padding:64px 0 28px;
}
.footer-cols{
  display:grid;
  grid-template-columns:1.4fr 1fr 1fr 1.2fr;
  gap:40px;
}
.footer-brand{display:inline-flex;align-items:center;gap:10px;margin-bottom:16px}
.footer-col h4{font-size:14px;font-weight:600;color:var(--accent);letter-spacing:.4px;margin-bottom:16px}
.footer-col p{font-size:14px;color:var(--text-2);line-height:1.8;max-width:340px}
.footer-col ul li{margin-bottom:10px}
.footer-col ul a{font-size:14px;color:var(--text-2);transition:color .2s var(--ease)}
.footer-col ul a:hover{color:var(--accent-soft)}
.footer-bottom{
  margin-top:48px;padding-top:22px;
  border-top:1px solid var(--line);
  display:flex;align-items:center;justify-content:space-between;gap:16px;flex-wrap:wrap;
  font-size:13px;color:var(--text-3);
}
@media (max-width:1023px){
  .footer-cols{grid-template-columns:1fr 1fr;gap:32px}
}
@media (max-width:639px){
  .footer-cols{grid-template-columns:1fr}
  .site-footer{padding:48px 0 24px}
}

/* 返回顶部 */
.to-top{
  position:fixed;right:24px;bottom:24px;z-index:70;
  width:48px;height:48px;border-radius:50%;
  background:rgba(11,13,16,.9);
  border:1px solid var(--line-strong);
  color:var(--text-2);
  display:flex;align-items:center;justify-content:center;
  font-size:18px;
  opacity:0;visibility:hidden;transform:translateY(10px);
  transition:opacity .28s var(--ease),transform .28s var(--ease),color .22s var(--ease),border-color .22s var(--ease),visibility .28s;
}
.to-top.is-visible{opacity:1;visibility:visible;transform:translateY(0)}
.to-top:hover{color:var(--accent-soft);border-color:var(--accent)}
@media (max-width:639px){.to-top{right:16px;bottom:16px}}

/* 通用文字工具 */
.lead{font-size:16px;color:var(--text-2);line-height:1.9}
.mt-16{margin-top:16px}
.mt-24{margin-top:24px}
.mt-32{margin-top:32px}

/* roulang page: category4 */
:root{
  --bg:#0B0D10;
  --surface:#12161B;
  --card:#1A2027;
  --overlay:rgba(11,13,16,.82);
  --line:rgba(255,255,255,.08);
  --line-strong:rgba(255,255,255,.16);
  --primary:#FF5A1F;
  --primary-hover:#E0440C;
  --primary-soft:#FFB08A;
  --accent:#35D6A8;
  --accent-soft:#8CE8CB;
  --text:#F2F4F3;
  --text-2:#DDE3E1;
  --muted:#A8B0B8;
  --dim:#6E767E;
  --danger:#FF6B6B;
  --radius:16px;
  --radius-sm:12px;
  --radius-pill:999px;
  --shadow:0 10px 30px rgba(0,0,0,.5);
  --shadow-hover:0 18px 44px rgba(0,0,0,.55);
  --ease:cubic-bezier(.2,.7,.3,1);
}
*,*::before,*::after{box-sizing:border-box}
html{-webkit-text-size-adjust:100%;scroll-behavior:smooth}
body{
  margin:0;padding:0;
  background:var(--bg);
  color:var(--text);
  font-family:-apple-system,"PingFang SC","Hiragino Sans GB","Source Han Sans SC","Microsoft YaHei",sans-serif;
  font-size:17px;line-height:1.85;
  -webkit-font-smoothing:antialiased;
  overflow-x:hidden;
}
img{max-width:100%;display:block;border:0}
a{color:inherit;text-decoration:none;transition:color .24s var(--ease)}
ul,ol{margin:0;padding:0}
button{font-family:inherit}
h1,h2,h3,h4{margin:0;font-weight:700;line-height:1.3}
p{margin:0}
::selection{background:rgba(255,90,31,.35)}
.container{max-width:1240px;margin:0 auto;padding:0 32px}
@media (max-width:1023px){.container{padding:0 28px}}
@media (max-width:639px){.container{padding:0 20px}}

/* ============ 导航 ============ */
.site-header{
  position:fixed;top:0;left:0;right:0;z-index:60;
  padding:16px 20px;
  transition:padding .24s var(--ease);
}
.nav-shell{
  display:flex;align-items:center;gap:26px;
  width:fit-content;max-width:100%;margin:0 auto;
  padding:10px 12px 10px 18px;
  border-radius:var(--radius-pill);
  background:rgba(11,13,16,.74);
  border:1px solid var(--line);
  backdrop-filter:blur(8px);
  -webkit-backdrop-filter:blur(8px);
  transition:background .24s var(--ease),border-color .24s var(--ease),box-shadow .24s var(--ease);
}
.site-header.scrolled .nav-shell{
  background:rgba(9,11,14,.94);
  border-color:var(--line-strong);
  box-shadow:0 12px 34px rgba(0,0,0,.55);
}
.brand{display:inline-flex;align-items:center;gap:10px;flex:none}
.brand-mark{
  width:26px;height:26px;flex:none;border-radius:8px;
  background:linear-gradient(135deg,var(--primary),#FF8A4C);
  display:inline-flex;align-items:center;justify-content:center;
  box-shadow:0 6px 16px rgba(255,90,31,.32);
}
.brand-mark span{width:10px;height:10px;border-radius:3px;background:#0B0D10;display:block}
.brand-text{font-size:15px;font-weight:700;letter-spacing:.2px;color:var(--text);white-space:nowrap}
.brand-text em{font-style:normal;color:var(--accent-soft);margin-left:2px}
.nav-links{display:flex;align-items:center;gap:22px}
.nav-links a{
  position:relative;font-size:15px;color:var(--muted);padding:6px 2px;white-space:nowrap;
}
.nav-links a::after{
  content:'';position:absolute;left:0;bottom:0;height:2px;width:0;
  background:var(--accent);border-radius:2px;
  transition:width .24s var(--ease);
}
.nav-links a:hover{color:var(--text)}
.nav-links a:hover::after{width:100%}
.nav-links a.active{color:var(--text);font-weight:600}
.nav-links a.active::after{width:100%}
.btn{
  display:inline-flex;align-items:center;justify-content:center;
  border-radius:var(--radius-pill);border:1.5px solid transparent;
  font-size:15px;font-weight:600;cursor:pointer;
  padding:13px 26px;min-height:44px;
  transition:transform .24s var(--ease),background .24s var(--ease),border-color .24s var(--ease),color .24s var(--ease),box-shadow .24s var(--ease);
}
.btn:focus-visible{outline:2px solid var(--accent);outline-offset:2px}
.btn-primary{background:var(--primary);color:#0B0D10;box-shadow:0 8px 22px rgba(255,90,31,.28)}
.btn-primary:hover{background:var(--primary-hover);transform:translateY(-2px);box-shadow:0 14px 32px rgba(255,90,31,.34)}
.btn-primary:active{transform:translateY(0)}
.btn-ghost{background:transparent;border-color:var(--line-strong);color:var(--text)}
.btn-ghost:hover{border-color:var(--accent);color:var(--accent-soft);transform:translateY(-2px)}
.btn-sm{padding:9px 18px;font-size:14px;min-height:38px}
.nav-cta{margin-left:4px;padding:11px 22px;font-size:14px}
.nav-toggle{
  display:none;width:44px;height:44px;border-radius:50%;
  background:rgba(255,255,255,.06);border:1px solid var(--line);
  align-items:center;justify-content:center;cursor:pointer;flex:none;
}
.nav-toggle span{display:block;width:16px;height:2px;background:var(--text);border-radius:2px;position:relative}
.nav-toggle span::before,.nav-toggle span::after{
  content:'';position:absolute;left:0;width:16px;height:2px;background:var(--text);border-radius:2px;
}
.nav-toggle span::before{top:-5px}
.nav-toggle span::after{top:5px}
.nav-drawer{
  position:fixed;inset:0;z-index:80;
  background:rgba(8,10,12,.97);
  padding:92px 24px 40px;
  display:none;flex-direction:column;
  overflow-y:auto;
}
.nav-drawer.open{display:flex}
.nav-drawer a{
  display:flex;align-items:center;min-height:52px;
  font-size:17px;color:var(--text);
  border-bottom:1px solid var(--line);
}
.nav-drawer a.active{color:var(--primary-soft);font-weight:600}
.nav-drawer .btn{margin-top:24px;align-self:flex-start}
.drawer-close{
  position:absolute;top:22px;right:24px;
  width:44px;height:44px;border-radius:50%;
  background:rgba(255,255,255,.06);border:1px solid var(--line);
  color:var(--text);font-size:22px;line-height:1;cursor:pointer;
}
@media (max-width:1023px){
  .nav-links,.nav-cta{display:none}
  .nav-toggle{display:inline-flex}
  .nav-shell{gap:12px;padding:8px 10px 8px 16px}
}

/* ============ 分类头 ============ */
.cat-hero{
  position:relative;overflow:hidden;
  padding:168px 0 68px;
  border-bottom:1px solid var(--line);
}
.cat-hero-bg{
  position:absolute;inset:0;
  background-size:cover;background-position:center;
  opacity:.4;
}
.cat-hero::after{
  content:'';position:absolute;inset:0;
  background:linear-gradient(180deg,rgba(11,13,16,.9) 0%,rgba(11,13,16,.74) 46%,var(--bg) 100%);
}
.cat-hero .container{position:relative;z-index:2}
.crumbs{
  display:flex;flex-wrap:wrap;align-items:center;gap:8px;
  font-size:13px;color:var(--dim);margin-bottom:22px;
}
.crumbs a{color:var(--muted)}
.crumbs a:hover{color:var(--accent-soft)}
.crumbs span.sep{color:var(--dim)}
.crumbs .current{color:var(--text-2)}
.badge{
  display:inline-flex;align-items:center;
  padding:4px 12px;border-radius:6px;
  font-size:12.5px;font-weight:600;line-height:1.6;
}
.badge-accent{background:rgba(53,214,168,.14);color:var(--accent-soft);border:1px solid rgba(53,214,168,.28)}
.badge-line{background:transparent;color:var(--primary-soft);border:1px solid rgba(255,90,31,.45)}
.cat-hero h1{
  font-size:clamp(30px,4.6vw,52px);
  font-weight:800;line-height:1.22;
  margin:18px 0 14px;letter-spacing:-.5px;
}
.cat-lead{
  max-width:660px;color:var(--muted);font-size:17px;line-height:1.8;
}
.cat-meta{
  display:flex;flex-wrap:wrap;gap:26px;margin-top:28px;
}
.cat-meta b{display:block;font-size:22px;font-weight:700;color:var(--text)}
.cat-meta span{font-size:13px;color:var(--dim)}

/* ============ 主区 ============ */
main{padding:76px 0 0}
.doc-layout{
  display:grid;grid-template-columns:minmax(0,1fr) 220px;
  gap:60px;align-items:start;
}
.doc-body{max-width:820px}
.doc-body h2{
  font-size:clamp(22px,2.6vw,30px);font-weight:700;line-height:1.32;
  margin:2.4em 0 .8em;padding-top:6px;
}
.doc-body h2:first-child{margin-top:0}
.doc-body h3{
  font-size:19px;font-weight:600;line-height:1.5;
  margin:2em 0 .7em;color:var(--text);
}
.doc-body p{margin:0 0 1.15em;color:var(--text-2)}
.doc-body ul{margin:0 0 1.3em;list-style:none}
.doc-body ul li{
  position:relative;padding-left:22px;margin-bottom:.55em;
  color:var(--text-2);line-height:1.8;
}
.doc-body ul li::before{
  content:'';position:absolute;left:2px;top:.68em;
  width:7px;height:7px;border-radius:2px;background:var(--accent);
}
.lead-in{font-size:17.5px}
.quote{
  margin:1.6em 0;padding:20px 24px;
  background:var(--surface);
  border-left:3px solid var(--accent);
  border-radius:0 var(--radius-sm) var(--radius-sm) 0;
  color:var(--text-2);font-size:16.5px;line-height:1.85;
}
.callout{
  margin:1.6em 0;padding:18px 22px;
  background:rgba(255,90,31,.08);
  border:1px solid rgba(255,90,31,.26);
  border-left:3px solid var(--primary);
  border-radius:var(--radius-sm);
  color:#F6E2D8;font-size:15.5px;line-height:1.8;
}
.callout strong{color:var(--primary-soft);font-weight:700}
.doc-body figure{margin:2em 0}
.doc-body figure img{border-radius:var(--radius-sm);width:100%;box-shadow:var(--shadow)}
.doc-body figcaption{
  margin-top:10px;font-size:13px;color:var(--dim);line-height:1.6;text-align:center;
}

/* 步骤时间轴 */
.steps{position:relative;margin:1.8em 0 2em;padding-left:26px}
.steps::before{
  content:'';position:absolute;left:6px;top:10px;bottom:10px;
  width:2px;background:linear-gradient(180deg,var(--primary),rgba(53,214,168,.35));
  border-radius:2px;
}
.step{position:relative;padding:0 0 26px 22px}
.step:last-child{padding-bottom:0}
.step::before{
  content:'';position:absolute;left:-26px;top:8px;
  width:14px;height:14px;border-radius:50%;
  background:var(--bg);border:2px solid var(--primary);
}
.step .step-num{
  display:block;font-size:13px;font-weight:700;letter-spacing:1px;
  color:var(--primary-soft);margin-bottom:4px;
}
.step h3{margin:0 0 6px;font-size:19px}
.step p{margin:0;color:var(--muted);font-size:15.5px}

/* 右侧锚点目录 */
.doc-toc{
  position:sticky;top:108px;
  border-left:1px solid var(--line);
  padding-left:20px;
}
.doc-toc h4{
  font-size:13px;color:var(--accent-soft);
  letter-spacing:.5px;margin-bottom:14px;font-weight:600;
}
.doc-toc a{
  display:block;font-size:14px;line-height:1.6;
  color:var(--muted);padding:7px 0 7px 10px;
  border-left:2px solid transparent;margin-left:-21px;
  transition:color .24s var(--ease),border-color .24s var(--ease);
}
.doc-toc a:hover{color:var(--text)}
.doc-toc a.current{color:var(--accent-soft);border-left-color:var(--accent)}
@media (max-width:1023px){
  .doc-layout{grid-template-columns:1fr;gap:0}
  .doc-toc{display:none}
}

/* ============ FAQ ============ */
.faq-block{margin-top:88px}
.section-head{margin-bottom:28px}
.section-head h2{font-size:clamp(22px,2.6vw,30px);font-weight:700}
.section-head p{margin-top:10px;color:var(--muted);font-size:15.5px;max-width:620px}
.faq-list{border-top:1px solid var(--line)}
.faq-item{border-bottom:1px solid var(--line)}
.faq-q{
  width:100%;display:flex;align-items:center;
  background:none;border:0;cursor:pointer;text-align:left;
  color:var(--text);font-size:17px;font-weight:600;line-height:1.6;
  padding:20px 46px 20px 18px;position:relative;min-height:44px;
  transition:color .24s var(--ease);
}
.faq-q::before{
  content:'';position:absolute;left:0;top:22px;bottom:22px;width:3px;
  background:var(--accent);border-radius:2px;
}
.faq-q::after{
  content:'+';position:absolute;right:12px;top:50%;
  transform:translateY(-50%);font-size:22px;font-weight:400;
  color:var(--accent-soft);line-height:1;
  transition:transform .24s var(--ease),color .24s var(--ease);
}
.faq-item.open .faq-q{color:var(--accent-soft)}
.faq-item.open .faq-q::after{transform:translateY(-50%) rotate(45deg)}
.faq-q:hover{color:var(--accent-soft)}
.faq-a{max-height:0;overflow:hidden;transition:max-height .24s var(--ease)}
.faq-a p{padding:0 46px 22px 18px;color:var(--muted);font-size:15px;line-height:1.8}

/* ============ CTA ============ */
.cta-band{
  margin:96px 0 0;
  background:linear-gradient(120deg,#151B21 0%,#10141A 100%);
  border:1px solid var(--line);
  border-radius:24px;
  padding:44px 44px;
  box-shadow:var(--shadow);
}
.cta-band h2{font-size:clamp(20px,2.4vw,27px);font-weight:700;line-height:1.4}
.cta-band p{margin-top:12px;color:var(--muted);font-size:15.5px;max-width:560px}
.cta-actions{margin-top:26px;display:flex;flex-wrap:wrap;gap:14px}
@media (max-width:639px){
  .cta-band{padding:28px 22px;border-radius:20px}
}

/* ============ 页脚 ============ */
.site-footer{
  margin-top:96px;padding:64px 0 28px;
  background:var(--surface);
  border-top:1px solid var(--line);
}
.footer-cols{
  display:grid;grid-template-columns:1.5fr 1fr 1fr 1.3fr;gap:40px;
}
.footer-brand{display:flex;align-items:center;gap:10px;margin-bottom:14px}
.footer-brand .brand-text{font-size:17px}
.footer-col p{color:var(--muted);font-size:14px;line-height:1.8;max-width:320px}
.footer-col h4{
  font-size:14px;color:var(--accent-soft);font-weight:600;
  margin-bottom:16px;letter-spacing:.3px;
}
.footer-col ul{list-style:none}
.footer-col ul li{margin-bottom:10px}
.footer-col ul a{font-size:14px;color:var(--muted)}
.footer-col ul a:hover{color:var(--text)}
.footer-bottom{
  margin-top:48px;padding-top:22px;
  border-top:1px solid var(--line);
  display:flex;flex-wrap:wrap;gap:12px 24px;justify-content:space-between;
  font-size:13px;color:var(--dim);
}
@media (max-width:1023px){
  .footer-cols{grid-template-columns:1fr 1fr;gap:34px}
}
@media (max-width:639px){
  .footer-cols{grid-template-columns:1fr;gap:30px}
  .site-footer{padding:48px 0 24px;margin-top:72px}
}

/* 返回顶部 */
.to-top{
  position:fixed;right:24px;bottom:24px;z-index:50;
  width:48px;height:48px;border-radius:50%;
  background:var(--primary);color:#0B0D10;border:0;cursor:pointer;
  display:flex;align-items:center;justify-content:center;
  font-size:20px;line-height:1;
  opacity:0;visibility:hidden;transform:translateY(10px);
  transition:opacity .24s var(--ease),transform .24s var(--ease),visibility .24s var(--ease),background .24s var(--ease);
  box-shadow:0 10px 26px rgba(255,90,31,.3);
}
.to-top.show{opacity:1;visibility:visible;transform:translateY(0)}
.to-top:hover{background:var(--primary-hover)}
.to-top:focus-visible{outline:2px solid var(--accent);outline-offset:2px}

@media (max-width:639px){
  main{padding:56px 0 0}
  .cat-hero{padding:136px 0 52px}
  .cat-meta{gap:18px}
  .doc-body h2{font-size:22px}
  .cta-band{margin-top:72px}
}