/* roulang page: index */
/* ============ 设计变量 ============ */
:root{
  --bg-base:#070B14;
  --bg-1:#0C1220;
  --bg-2:#111A2B;
  --glass:rgba(255,255,255,.055);
  --glass-2:rgba(255,255,255,.09);
  --glass-line:rgba(255,255,255,.12);
  --primary:#2F7BFF;
  --primary-600:#1B5FE0;
  --primary-soft:rgba(47,123,255,.16);
  --cyan:#27E0D0;
  --amber:#FFB35C;
  --text-1:#F2F6FF;
  --text-2:#A9B6CC;
  --text-3:#6E7C93;
  --line:rgba(255,255,255,.10);
  --line-strong:rgba(255,255,255,.18);
  --r-card:18px;
  --r-sm:14px;
  --r-btn:10px;
  --r-pill:999px;
  --shadow-1:0 8px 24px rgba(0,0,0,.35);
  --shadow-glow:0 0 0 1px rgba(47,123,255,.35),0 10px 30px rgba(47,123,255,.28);
  --ease:all .22s cubic-bezier(.2,.7,.3,1);
  --container:1280px;
}

/* ============ 基础 reset ============ */
*,*::before,*::after{box-sizing:border-box;}
html{-webkit-text-size-adjust:100%;scroll-behavior:smooth;}
body{
  margin:0;
  background:var(--bg-base);
  color:var(--text-1);
  font-family:"HarmonyOS Sans SC","Source Han Sans SC","Noto Sans SC","PingFang SC","Microsoft YaHei",system-ui,sans-serif;
  font-size:16.5px;
  line-height:1.75;
  letter-spacing:0;
  -webkit-font-smoothing:antialiased;
  overflow-x:hidden;
}
body::before{
  content:"";
  position:fixed;
  inset:0;
  pointer-events:none;
  z-index:0;
  background:
    radial-gradient(620px 420px at 8% 6%, rgba(39,224,208,.10), transparent 70%),
    radial-gradient(680px 460px at 96% 92%, rgba(255,179,92,.07), transparent 72%);
}
body::after{
  content:"";
  position:fixed;
  inset:0;
  pointer-events:none;
  z-index:0;
  background-image:linear-gradient(rgba(255,255,255,.028) 1px,transparent 1px),
                   linear-gradient(90deg,rgba(255,255,255,.028) 1px,transparent 1px);
  background-size:64px 64px;
}
img{max-width:100%;display:block;border-radius:12px;}
a{color:inherit;text-decoration:none;transition:var(--ease);}
button,input{font:inherit;color:inherit;}
h1,h2,h3,h4{margin:0;font-weight:800;letter-spacing:-.01em;line-height:1.28;}
p{margin:0;}
ul{margin:0;padding:0;list-style:none;}
:focus-visible{outline:2px solid var(--primary);outline-offset:3px;border-radius:6px;}
::selection{background:var(--primary-soft);}

.num{font-variant-numeric:tabular-nums;font-feature-settings:"tnum";}

/* ============ 容器 ============ */
.wrap{
  width:100%;
  max-width:var(--container);
  margin:0 auto;
  padding:0 40px;
  position:relative;
  z-index:2;
}

/* ============ 导航 ============ */
.site-header{
  position:fixed;
  top:0;left:0;right:0;
  z-index:80;
  height:76px;
  transition:var(--ease);
  background:linear-gradient(180deg,rgba(7,11,20,.72),rgba(7,11,20,0));
}
.site-header.is-scrolled{
  height:64px;
  background:rgba(7,11,20,.82);
  backdrop-filter:blur(14px);
  -webkit-backdrop-filter:blur(14px);
  border-bottom:1px solid var(--line);
}
.nav-inner{
  height:100%;
  display:flex;
  align-items:center;
  justify-content:space-between;
  gap:24px;
}
.logo{
  display:inline-flex;
  align-items:center;
  gap:10px;
  font-size:15.5px;
  font-weight:800;
  letter-spacing:-.01em;
  color:var(--text-1);
  white-space:nowrap;
}
.logo .dot{
  width:8px;height:8px;border-radius:50%;
  background:var(--cyan);
  box-shadow:0 0 12px rgba(39,224,208,.85);
  flex:none;
}
.nav-links{
  display:flex;
  align-items:center;
  gap:36px;
  font-size:14.5px;
  letter-spacing:.02em;
}
.nav-links a{
  position:relative;
  color:var(--text-2);
  padding:6px 0;
}
.nav-links a::after{
  content:"";
  position:absolute;
  left:0;right:0;bottom:0;
  height:2px;border-radius:2px;
  background:var(--primary);
  box-shadow:0 0 10px rgba(47,123,255,.9);
  transform:scaleX(0);
  transform-origin:left;
  transition:var(--ease);
}
.nav-links a:hover{color:var(--text-1);}
.nav-links a:hover::after{transform:scaleX(1);}
.nav-links a.is-active{color:var(--text-1);}
.nav-links a.is-active::after{transform:scaleX(1);}
.nav-right{display:flex;align-items:center;gap:14px;}
.btn-mini{
  display:inline-flex;
  align-items:center;
  height:40px;
  padding:0 18px;
  border-radius:var(--r-btn);
  background:var(--glass);
  border:1px solid var(--glass-line);
  font-size:14px;
  color:var(--text-1);
  backdrop-filter:blur(10px);
  white-space:nowrap;
}
.btn-mini:hover{background:var(--glass-2);border-color:var(--line-strong);}
.icon-btn{
  width:44px;height:44px;
  display:inline-flex;align-items:center;justify-content:center;
  border-radius:var(--r-btn);
  border:1px solid transparent;
  background:transparent;
  cursor:pointer;
}
.icon-btn:hover{background:var(--glass);border-color:var(--glass-line);}
.icon-btn svg{width:20px;height:20px;stroke:var(--text-2);stroke-width:1.5;fill:none;}
.burger{display:none;}
.burger span{display:block;width:20px;height:1.5px;background:var(--text-1);border-radius:2px;}
.burger span+span{margin-top:6px;}

/* 移动端抽屉 */
.drawer{
  position:fixed;
  inset:0;
  z-index:90;
  background:rgba(7,11,20,.94);
  backdrop-filter:blur(18px);
  -webkit-backdrop-filter:blur(18px);
  padding:24px 20px 32px;
  display:flex;
  flex-direction:column;
  transform:translateY(-102%);
  transition:transform .28s cubic-bezier(.2,.7,.3,1);
  overflow-y:auto;
}
.drawer.is-open{transform:translateY(0);}
.drawer-top{display:flex;align-items:center;justify-content:space-between;margin-bottom:18px;}
.drawer-links{display:flex;flex-direction:column;}
.drawer-links a{
  font-size:20px;
  padding:18px 4px;
  border-bottom:1px solid var(--line);
  color:var(--text-1);
}
.drawer-links a.is-active{color:var(--primary);}
.drawer-foot{margin-top:auto;padding-top:28px;display:flex;flex-direction:column;gap:16px;}

/* ============ 按钮 ============ */
.btn{
  display:inline-flex;
  align-items:center;
  justify-content:center;
  gap:8px;
  min-height:48px;
  padding:0 28px;
  border-radius:var(--r-btn);
  font-size:15.5px;
  font-weight:700;
  border:1px solid transparent;
  cursor:pointer;
  transition:var(--ease);
}
.btn:active{transform:scale(.98);}
.btn-primary{
  border-radius:var(--r-pill);
  background:linear-gradient(180deg,#3D8AFF,var(--primary-600));
  color:#fff;
  box-shadow:0 0 0 1px rgba(47,123,255,.5),0 12px 30px rgba(47,123,255,.32),inset 0 1px 0 rgba(255,255,255,.28);
}
.btn-primary:hover{
  filter:brightness(1.08);
  box-shadow:0 0 0 1px rgba(47,123,255,.6),0 16px 42px rgba(47,123,255,.5),inset 0 1px 0 rgba(255,255,255,.3);
}
.btn-ghost{
  background:var(--glass);
  border-color:var(--glass-line);
  color:var(--text-1);
  backdrop-filter:blur(12px);
}
.btn-ghost:hover{background:var(--glass-2);border-color:var(--line-strong);}
.link-arrow{
  display:inline-flex;
  align-items:center;
  gap:6px;
  font-size:14.5px;
  font-weight:600;
  color:var(--cyan);
}
.link-arrow:hover{gap:10px;color:#5CF3E4;}
.link-arrow svg{width:16px;height:16px;stroke:currentColor;stroke-width:1.8;fill:none;}

/* ============ Hero ============ */
.hero{
  position:relative;
  min-height:88vh;
  display:flex;
  align-items:center;
  padding:132px 0 72px;
  overflow:hidden;
}
.hero-bg{
  position:absolute;
  inset:0;
  background-image:url('/assets/images/backpic/back-1.png');
  background-size:cover;
  background-position:center right;
  z-index:0;
}
.hero-bg::after{
  content:"";
  position:absolute;
  inset:0;
  background:linear-gradient(100deg,rgba(7,11,20,.96) 6%,rgba(7,11,20,.82) 44%,rgba(7,11,20,.52) 78%,rgba(7,11,20,.72) 100%);
}
.hero-grid{
  display:grid;
  grid-template-columns:minmax(0,1.35fr) minmax(0,.65fr);
  gap:56px;
  align-items:end;
}
.hero-title{
  font-size:54px;
  line-height:1.16;
  max-width:15em;
}
.hero-title em{
  font-style:normal;
  color:var(--cyan);
}
.hero-sub{
  margin-top:22px;
  font-size:17px;
  color:var(--text-2);
  max-width:34em;
  line-height:1.85;
}
.hero-actions{
  margin-top:36px;
  display:flex;
  flex-wrap:wrap;
  gap:16px;
}
.hero-tags{
  margin-top:34px;
  display:flex;
  flex-wrap:wrap;
  gap:10px;
}
.badge{
  display:inline-flex;
  align-items:center;
  gap:6px;
  padding:5px 13px;
  border-radius:var(--r-pill);
  border:1px solid var(--glass-line);
  background:rgba(255,255,255,.06);
  font-size:13px;
  color:var(--text-2);
}
.badge-cyan{border-color:rgba(39,224,208,.32);background:rgba(39,224,208,.08);color:#8DF3E9;}
.badge-amber{border-color:rgba(255,179,92,.32);background:rgba(255,179,92,.08);color:#FFD5A3;}

.stat-card{
  background:var(--glass);
  border:1px solid var(--glass-line);
  border-radius:var(--r-card);
  backdrop-filter:blur(14px);
  -webkit-backdrop-filter:blur(14px);
  padding:26px 26px 20px;
  box-shadow:var(--shadow-1);
}
.stat-card .stat-cap{
  font-size:13px;
  color:var(--text-3);
  margin-bottom:14px;
}
.stat-row{
  display:flex;
  align-items:baseline;
  justify-content:space-between;
  gap:12px;
  padding:14px 0;
  border-top:1px solid var(--line);
}
.stat-row:first-of-type{border-top:0;}
.stat-num{
  font-size:26px;
  font-weight:800;
  color:var(--text-1);
  font-variant-numeric:tabular-nums;
}
.stat-num span{color:var(--amber);font-size:15px;margin-left:3px;}
.stat-label{font-size:13.5px;color:var(--text-2);}

/* ============ 通用板块 ============ */
.section{padding:96px 0;position:relative;z-index:2;}
.section-tight{padding:72px 0;}
.section-head{
  display:flex;
  align-items:flex-end;
  justify-content:space-between;
  gap:24px;
  margin-bottom:44px;
}
.eyebrow{
  display:inline-flex;
  align-items:center;
  gap:8px;
  font-size:13.5px;
  color:var(--cyan);
  margin-bottom:14px;
}
.eyebrow::before{
  content:"";
  width:6px;height:6px;border-radius:50%;
  background:var(--cyan);
  box-shadow:0 0 10px rgba(39,224,208,.9);
}
.h2{font-size:34px;}
.lead{font-size:16px;color:var(--text-2);max-width:40em;margin-top:14px;}

/* ============ 品牌主张 8/4 ============ */
.split-84{
  display:grid;
  grid-template-columns:minmax(0,2fr) minmax(0,1fr);
  gap:40px;
  align-items:start;
}
.prose p{
  margin-top:20px;
  color:var(--text-2);
  font-size:16px;
  line-height:1.9;
}
.prose p:first-of-type{margin-top:26px;}
.panel{
  background:var(--glass);
  border:1px solid var(--glass-line);
  border-radius:var(--r-card);
  backdrop-filter:blur(14px);
  padding:28px;
  box-shadow:var(--shadow-1);
}
.panel-item{
  padding:18px 0;
  border-top:1px solid var(--line);
}
.panel-item:first-child{padding-top:0;border-top:0;}
.panel-item:last-child{padding-bottom:0;}
.panel-item h3{font-size:16.5px;margin-bottom:6px;}
.panel-item p{font-size:14px;color:var(--text-2);line-height:1.7;}

/* ============ 时间轴 ============ */
.timeline{
  position:relative;
  max-width:820px;
  margin-left:auto;
  padding-left:34px;
}
.timeline::before{
  content:"";
  position:absolute;
  left:6px;top:8px;bottom:8px;
  width:1px;
  background:linear-gradient(180deg,rgba(47,123,255,.65),rgba(39,224,208,.35),rgba(255,255,255,.05));
}
.tl-item{position:relative;padding:0 0 40px;}
.tl-item:last-child{padding-bottom:0;}
.tl-item::before{
  content:"";
  position:absolute;
  left:-34px;top:9px;
  width:13px;height:13px;
  border-radius:50%;
  background:var(--bg-base);
  border:2px solid var(--primary);
  box-shadow:0 0 0 4px rgba(47,123,255,.14);
  transform:translateX(-2px);
}
.tl-num{
  font-size:13px;
  font-weight:800;
  color:var(--amber);
  font-variant-numeric:tabular-nums;
  letter-spacing:.06em;
}
.tl-item h3{font-size:21px;margin:8px 0 10px;}
.tl-item p{font-size:15px;color:var(--text-2);max-width:36em;}

/* ============ 精选内容栅格 ============ */
.grid-feature{
  display:grid;
  grid-template-columns:repeat(12,minmax(0,1fr));
  gap:24px;
}
.card{
  background:var(--glass);
  border:1px solid var(--glass-line);
  border-radius:var(--r-card);
  backdrop-filter:blur(14px);
  -webkit-backdrop-filter:blur(14px);
  overflow:hidden;
  transition:var(--ease);
  display:flex;
  flex-direction:column;
}
.card:hover{
  transform:translateY(-4px);
  border-color:rgba(255,255,255,.2);
  box-shadow:0 0 0 1px rgba(47,123,255,.22),0 14px 34px rgba(47,123,255,.16);
}
.card-lg{grid-column:span 8;}
.card-sm{grid-column:span 4;}
.card-media{
  position:relative;
  aspect-ratio:16/9;
  overflow:hidden;
}
.card-lg .card-media{aspect-ratio:16/8;}
.card-media img{width:100%;height:100%;object-fit:cover;border-radius:0;}
.card-media::after{
  content:"";
  position:absolute;inset:0;
  background:linear-gradient(180deg,rgba(7,11,20,0) 40%,rgba(7,11,20,.72));
}
.card-body{padding:28px;display:flex;flex-direction:column;gap:12px;flex:1;}
.card-sm .card-body{padding:22px;}
.card-body h3{font-size:21px;}
.card-sm .card-body h3{font-size:18px;}
.card-body p{font-size:14.5px;color:var(--text-2);line-height:1.78;}
.card-meta{
  margin-top:auto;
  display:flex;
  align-items:center;
  justify-content:space-between;
  gap:12px;
  font-size:13px;
  color:var(--text-3);
}
.corner{
  position:absolute;
  top:16px;left:16px;
  z-index:3;
}

/* ============ 信任背书横滑带 ============ */
.rail-mask{
  position:relative;
  margin:0 -40px;
}
.rail-mask::before,
.rail-mask::after{
  content:"";
  position:absolute;
  top:0;bottom:0;
  width:72px;
  z-index:4;
  pointer-events:none;
}
.rail-mask::before{left:0;background:linear-gradient(90deg,var(--bg-base),rgba(7,11,20,0));}
.rail-mask::after{right:0;background:linear-gradient(270deg,var(--bg-base),rgba(7,11,20,0));}
.rail{
  display:flex;
  gap:20px;
  overflow-x:auto;
  padding:6px 40px 22px;
  scrollbar-width:thin;
  scroll-snap-type:x proximity;
}
.rail::-webkit-scrollbar{height:6px;}
.rail::-webkit-scrollbar-thumb{background:var(--line-strong);border-radius:6px;}
.rail::-webkit-scrollbar-track{background:transparent;}
.rail-item{
  flex:0 0 300px;
  scroll-snap-align:start;
  background:var(--glass);
  border:1px solid var(--glass-line);
  border-radius:var(--r-sm);
  padding:24px;
  backdrop-filter:blur(12px);
}
.rail-item:hover{border-color:var(--line-strong);background:var(--glass-2);}
.rail-item .r-kpi{
  font-size:24px;
  font-weight:800;
  color:var(--cyan);
  font-variant-numeric:tabular-nums;
  margin-bottom:10px;
}
.rail-item h3{font-size:16.5px;margin-bottom:8px;}
.rail-item p{font-size:13.8px;color:var(--text-2);line-height:1.7;}

/* ============ 最新信息列表 ============ */
.news-list{
  border-top:1px solid var(--line);
}
.news-item{
  display:grid;
  grid-template-columns:minmax(0,1fr) auto;
  gap:24px;
  align-items:center;
  padding:26px 20px 26px 18px;
  border-bottom:1px solid var(--line);
  position:relative;
  transition:var(--ease);
}
.news-item::before{
  content:"";
  position:absolute;
  left:0;top:14px;bottom:14px;
  width:2px;
  border-radius:2px;
  background:var(--primary);
  opacity:0;
  transition:var(--ease);
}
.news-item:hover{background:rgba(255,255,255,.035);}
.news-item:hover::before{opacity:1;}
.news-item h3{
  font-size:18px;
  margin-bottom:8px;
  overflow:hidden;
  text-overflow:ellipsis;
  white-space:nowrap;
}
.news-item p{
  font-size:14.5px;
  color:var(--text-2);
  line-height:1.75;
  display:-webkit-box;
  -webkit-line-clamp:2;
  -webkit-box-orient:vertical;
  overflow:hidden;
}
.news-side{
  display:flex;
  align-items:center;
  gap:18px;
  flex:none;
}
.news-side time{font-size:13px;color:var(--text-3);font-variant-numeric:tabular-nums;}
.news-item .link-arrow svg{transition:var(--ease);}
.news-item:hover .link-arrow svg{transform:translateX(4px);}
.empty-state{
  border:1px solid var(--glass-line);
  background:var(--glass);
  border-radius:var(--r-card);
  padding:56px 24px;
  text-align:center;
  display:flex;
  flex-direction:column;
  align-items:center;
  gap:12px;
}
.empty-state svg{width:34px;height:34px;stroke:var(--text-3);stroke-width:1.5;fill:none;}
.empty-state p{font-size:14px;color:var(--text-2);}

/* ============ FAQ ============ */
.faq-list{border-top:1px solid var(--line);max-width:940px;}
.faq-item{border-bottom:1px solid var(--line);}
.faq-item summary{
  list-style:none;
  cursor:pointer;
  display:flex;
  align-items:center;
  justify-content:space-between;
  gap:20px;
  padding:24px 4px;
  font-size:17px;
  font-weight:700;
  transition:var(--ease);
}
.faq-item summary::-webkit-details-marker{display:none;}
.faq-item summary:hover{color:var(--cyan);}
.faq-plus{
  flex:none;
  width:26px;height:26px;
  position:relative;
  transition:transform .22s cubic-bezier(.2,.7,.3,1);
}
.faq-plus::before,
.faq-plus::after{
  content:"";
  position:absolute;
  background:var(--amber);
  border-radius:2px;
}
.faq-plus::before{left:0;right:0;top:12px;height:1.6px;}
.faq-plus::after{top:0;bottom:0;left:12px;width:1.6px;}
.faq-item[open] .faq-plus{transform:rotate(45deg);}
.faq-answer{
  padding:0 4px 26px;
  font-size:15px;
  color:var(--text-2);
  line-height:1.85;
  max-width:56em;
}

/* ============ 订阅 ============ */
.subscribe{
  margin-top:96px;
  background:linear-gradient(120deg,rgba(47,123,255,.14),rgba(39,224,208,.07) 55%,rgba(255,179,92,.06));
  border:1px solid var(--glass-line);
  border-radius:var(--r-card);
  backdrop-filter:blur(16px);
  padding:44px;
  display:grid;
  grid-template-columns:minmax(0,1fr) minmax(0,420px);
  gap:40px;
  align-items:center;
}
.subscribe h2{font-size:28px;}
.subscribe p{margin-top:12px;font-size:15px;color:var(--text-2);}
.sub-form{display:flex;gap:12px;}
.sub-form input{
  flex:1;
  min-height:48px;
  padding:0 16px;
  border-radius:var(--r-btn);
  background:rgba(255,255,255,.07);
  border:1px solid var(--glass-line);
  font-size:15px;
  transition:var(--ease);
}
.sub-form input::placeholder{color:var(--text-3);}
.sub-form input:focus{
  outline:none;
  border-color:rgba(47,123,255,.65);
  box-shadow:0 0 0 3px rgba(47,123,255,.18);
}
.sub-note{margin-top:12px;font-size:13px;color:var(--text-3);}

/* ============ 页脚 ============ */
.site-footer{
  background:#05080F;
  border-top:1px solid var(--line);
  margin-top:96px;
  padding:72px 0 28px;
  position:relative;
  z-index:2;
}
.foot-grid{
  display:grid;
  grid-template-columns:1.5fr 1fr 1fr 1.2fr;
  gap:0;
}
.foot-col{
  padding:0 32px;
  border-left:1px solid var(--line);
}
.foot-col:first-child{padding-left:0;border-left:0;}
.foot-col:last-child{padding-right:0;}
.foot-brand{display:inline-flex;align-items:center;gap:10px;font-size:16px;font-weight:800;margin-bottom:16px;}
.foot-brand .dot{width:8px;height:8px;border-radius:50%;background:var(--cyan);box-shadow:0 0 12px rgba(39,224,208,.85);}
.foot-col p{font-size:13.8px;color:var(--text-2);line-height:1.85;}
.foot-title{font-size:14px;font-weight:700;margin-bottom:18px;color:var(--text-1);}
.foot-links{display:flex;flex-direction:column;gap:12px;}
.foot-links a{font-size:13.8px;color:var(--text-2);}
.foot-links a:hover{color:var(--cyan);}
.foot-bottom{
  margin-top:56px;
  padding-top:22px;
  border-top:1px solid var(--line);
  text-align:center;
  font-size:13px;
  color:var(--text-3);
}

/* ============ 响应式 ============ */
@media (max-width:1200px){
  .hero-title{font-size:46px;}
  .h2{font-size:30px;}
}
@media (max-width:1024px){
  .wrap{padding:0 28px;}
  .nav-links{gap:22px;font-size:14px;}
  .hero{padding:120px 0 64px;min-height:auto;}
  .hero-grid{grid-template-columns:1fr;gap:36px;align-items:start;}
  .hero-title{font-size:40px;}
  .split-84{grid-template-columns:1fr;}
  .card-lg,.card-sm{grid-column:span 12;}
  .timeline{margin-left:0;}
  .foot-grid{grid-template-columns:1fr 1fr;row-gap:40px;}
  .foot-col{padding:0 24px;}
  .foot-col:nth-child(3){border-left:0;padding-left:0;}
  .foot-col:nth-child(4){padding-left:0;}
  .rail-mask{margin:0 -28px;}
  .rail{padding:6px 28px 20px;}
  .subscribe{grid-template-columns:1fr;padding:34px;margin-top:64px;}
}
@media (max-width:768px){
  body{font-size:16px;}
  .wrap{padding:0 20px;}
  .nav-links,.nav-right .btn-mini{display:none;}
  .burger{display:inline-flex;flex-direction:column;align-items:center;justify-content:center;}
  .section{padding:64px 0;}
  .hero-title{font-size:32px;}
  .hero-sub{font-size:15.5px;}
  .h2{font-size:26px;}
  .h3,.card-body h3{font-size:18px;}
  .news-item{grid-template-columns:1fr;gap:12px;padding:22px 12px;}
  .news-item h3{white-space:normal;}
  .news-side{justify-content:space-between;}
  .rail-mask{margin:0 -20px;}
  .rail{padding:6px 20px 18px;}
  .rail-item{flex:0 0 78vw;}
  .subscribe{padding:26px;margin-top:56px;}
  .sub-form{flex-direction:column;}
  .subscribe h2{font-size:23px;}
  .foot-grid{grid-template-columns:1fr;}
  .foot-col{padding:0;border-left:0;border-top:1px solid var(--line);padding-top:26px;}
  .foot-col:first-child{border-top:0;padding-top:0;}
  .timeline{padding-left:26px;}
  .tl-item::before{left:-26px;}
}
@media (max-width:480px){
  .hero-title{font-size:28px;}
  .btn{width:100%;}
  .hero-actions{flex-direction:column;align-items:stretch;}
  .card-body{padding:22px;}
}

/* roulang page: article */
:root{
  --bg-base:#070B14;
  --bg-1:#0C1220;
  --bg-2:#111A2B;
  --glass:rgba(255,255,255,.055);
  --glass-2:rgba(255,255,255,.09);
  --glass-line:rgba(255,255,255,.12);
  --primary:#2F7BFF;
  --primary-600:#1B5FE0;
  --primary-soft:rgba(47,123,255,.16);
  --cyan:#27E0D0;
  --amber:#FFB35C;
  --text-1:#F2F6FF;
  --text-2:#A9B6CC;
  --text-3:#6E7C93;
  --line:rgba(255,255,255,.10);
  --line-strong:rgba(255,255,255,.18);
  --r-card:18px;
  --r-sm:14px;
  --r-btn:10px;
  --r-img:14px;
  --shadow-1:0 8px 24px rgba(0,0,0,.35);
  --shadow-glow:0 0 0 1px rgba(47,123,255,.35),0 10px 30px rgba(47,123,255,.28);
  --ease:all .22s cubic-bezier(.2,.7,.3,1);
  --font:"HarmonyOS Sans SC","Source Han Sans SC","PingFang SC","Microsoft YaHei",system-ui,sans-serif;
}
*,*::before,*::after{box-sizing:border-box;}
html{-webkit-text-size-adjust:100%;scroll-behavior:smooth;}
body{
  margin:0;
  background:var(--bg-base);
  color:var(--text-1);
  font-family:var(--font);
  font-size:16.5px;
  line-height:1.75;
  letter-spacing:0;
  overflow-x:hidden;
}
body::before{
  content:"";position:fixed;inset:0;z-index:0;pointer-events:none;
  background:
    radial-gradient(560px 460px at 8% 3%,rgba(39,224,208,.10),transparent 65%),
    radial-gradient(640px 520px at 94% 97%,rgba(255,179,92,.08),transparent 62%);
}
body::after{
  content:"";position:fixed;inset:0;z-index:0;pointer-events:none;opacity:.03;
  background-image:linear-gradient(rgba(255,255,255,.7) 1px,transparent 1px),linear-gradient(90deg,rgba(255,255,255,.7) 1px,transparent 1px);
  background-size:64px 64px;
}
img{max-width:100%;display:block;border-radius:12px;}
a{color:inherit;text-decoration:none;}
button{font-family:inherit;cursor:pointer;border:0;background:none;color:inherit;}
input{font-family:inherit;}
h1,h2,h3,h4{margin:0;font-weight:800;letter-spacing:-.01em;line-height:1.25;}
p{margin:0;}
ul,ol{margin:0;padding:0;}
:focus-visible{outline:2px solid var(--primary);outline-offset:3px;border-radius:4px;}
.wrap{width:100%;max-width:1280px;margin:0 auto;padding:0 40px;position:relative;z-index:1;}

/* ============ 导航 ============ */
.site-header{
  position:sticky;top:0;z-index:60;
  background:linear-gradient(180deg,rgba(7,11,20,.92),rgba(7,11,20,.55) 70%,rgba(7,11,20,0));
  transition:var(--ease);
}
.site-header.is-scrolled{
  background:rgba(9,14,25,.86);
  backdrop-filter:blur(16px);
  -webkit-backdrop-filter:blur(16px);
  border-bottom:1px solid var(--line);
}
.nav-inner{display:flex;align-items:center;justify-content:space-between;gap:24px;height:76px;transition:var(--ease);}
.site-header.is-scrolled .nav-inner{height:64px;}
.logo{display:inline-flex;align-items:center;gap:10px;font-size:17px;font-weight:800;letter-spacing:-.01em;color:var(--text-1);white-space:nowrap;}
.logo .dot{width:4px;height:4px;border-radius:50%;background:var(--cyan);box-shadow:0 0 10px var(--cyan);flex:0 0 auto;}
.nav-links{display:flex;align-items:center;gap:36px;}
.nav-links a{
  position:relative;font-size:14.5px;letter-spacing:.02em;color:var(--text-2);
  padding:6px 0;transition:var(--ease);
}
.nav-links a:hover{color:var(--text-1);}
.nav-links a::after{
  content:"";position:absolute;left:0;right:0;bottom:-2px;height:2px;border-radius:2px;
  background:var(--primary);opacity:0;transform:scaleX(.4);transition:var(--ease);
  box-shadow:0 0 12px rgba(47,123,255,.85);
}
.nav-links a.is-active{color:var(--text-1);}
.nav-links a.is-active::after{opacity:1;transform:scaleX(1);}
.nav-right{display:flex;align-items:center;gap:12px;}
.btn-mini{
  display:inline-flex;align-items:center;height:38px;padding:0 18px;border-radius:999px;
  font-size:14px;color:var(--text-1);background:var(--glass);border:1px solid var(--glass-line);
  transition:var(--ease);white-space:nowrap;
}
.btn-mini:hover{background:var(--glass-2);border-color:var(--line-strong);transform:translateY(-2px);}
.btn-mini:active{transform:scale(.98);}
.icon-btn{
  width:44px;height:44px;display:inline-flex;align-items:center;justify-content:center;
  border-radius:12px;border:1px solid transparent;transition:var(--ease);color:var(--text-2);
}
.icon-btn:hover{color:var(--text-1);background:var(--glass);border-color:var(--glass-line);}
.icon-btn svg{width:20px;height:20px;fill:none;stroke:currentColor;stroke-width:1.5;stroke-linecap:round;}
.burger{display:none;flex-direction:column;gap:6px;}
.burger span{display:block;width:20px;height:1.5px;background:currentColor;border-radius:2px;transition:var(--ease);}
.burger.is-open span:first-child{transform:translateY(3.75px) rotate(45deg);}
.burger.is-open span:last-child{transform:translateY(-3.75px) rotate(-45deg);}
.drawer{
  position:fixed;inset:0;z-index:55;background:rgba(7,11,20,.96);
  backdrop-filter:blur(18px);-webkit-backdrop-filter:blur(18px);
  padding:120px 24px 40px;display:flex;flex-direction:column;
  opacity:0;visibility:hidden;transform:translateY(-8px);transition:var(--ease);
}
.drawer.is-open{opacity:1;visibility:visible;transform:none;}
.drawer a.drawer-link{
  display:flex;align-items:center;justify-content:space-between;
  font-size:20px;font-weight:700;padding:20px 4px;border-bottom:1px solid var(--line);color:var(--text-1);
}
.drawer a.drawer-link span{color:var(--text-3);font-size:14px;}
.drawer-foot{margin-top:auto;padding-top:28px;border-top:1px solid var(--line);display:flex;flex-direction:column;gap:16px;}
.drawer-brand{display:flex;align-items:center;gap:10px;font-weight:800;font-size:16px;}
.drawer-brand .dot{width:4px;height:4px;border-radius:50%;background:var(--cyan);box-shadow:0 0 10px var(--cyan);}
.drawer-cta{
  display:inline-flex;justify-content:center;align-items:center;height:52px;border-radius:12px;
  background:var(--primary);color:#fff;font-weight:700;box-shadow:var(--shadow-glow);
}

/* ============ 通用组件 ============ */
.badge{
  display:inline-flex;align-items:center;height:26px;padding:0 12px;border-radius:999px;
  font-size:12.5px;letter-spacing:.02em;border:1px solid var(--glass-line);
  background:rgba(255,255,255,.06);color:var(--text-2);
}
.badge-cyan{border-color:rgba(39,224,208,.35);background:rgba(39,224,208,.10);color:#8FF3E9;}
.badge-amber{border-color:rgba(255,179,92,.35);background:rgba(255,179,92,.10);color:#FFD5A4;}
.text-link{
  display:inline-flex;align-items:center;gap:8px;font-size:14.5px;color:var(--cyan);
  border-bottom:1px solid rgba(39,224,208,.35);padding-bottom:2px;transition:var(--ease);
}
.text-link:hover{color:#8FF3E9;border-color:#8FF3E9;text-shadow:0 0 14px rgba(39,224,208,.55);}
.text-link svg{width:16px;height:16px;fill:none;stroke:currentColor;stroke-width:1.6;stroke-linecap:round;transition:var(--ease);}
.text-link:hover svg{transform:translateX(4px);}
.num{font-family:Inter,"Segoe UI",sans-serif;font-variant-numeric:tabular-nums;}

/* ============ 面包屑 ============ */
.crumb-row{padding:34px 0 8px;}
.crumb{display:flex;align-items:center;gap:10px;font-size:13px;color:var(--text-3);flex-wrap:wrap;}
.crumb a{color:var(--text-2);transition:var(--ease);}
.crumb a:hover{color:var(--cyan);}
.crumb .sep{color:var(--text-3);opacity:.6;}
.crumb-cur{max-width:340px;overflow:hidden;text-overflow:ellipsis;white-space:nowrap;color:var(--text-2);}

/* ============ 文章主体 ============ */
.article-wrapper{padding:18px 0 96px;}
.article-grid{display:grid;grid-template-columns:minmax(0,1fr) 300px;gap:56px;align-items:start;}
.article-main{min-width:0;}
.post-head{padding:14px 0 26px;border-bottom:1px solid var(--line);}
.post-head h1{font-size:40px;line-height:1.22;letter-spacing:-.015em;}
.meta-row{display:flex;align-items:center;gap:14px;flex-wrap:wrap;margin-top:20px;font-size:13px;color:var(--text-2);}
.meta-row .meta-div{width:1px;height:12px;background:var(--line-strong);}
.meta-source{color:var(--text-3);}
.figure-hero{margin:28px 0 0;}
.figure-hero img{width:100%;aspect-ratio:16/9;object-fit:cover;border-radius:var(--r-img);border:1px solid var(--line);}
.figure-hero figcaption{margin-top:12px;text-align:center;font-size:13px;color:var(--text-3);}
.prose{max-width:760px;margin:0 auto;padding-top:38px;font-size:17px;line-height:1.9;color:#DCE5F5;}
.prose p{margin:0 0 1.1em;}
.prose h2{
  position:relative;font-size:26px;margin:44px 0 18px;padding-left:16px;color:var(--text-1);
}
.prose h2::before{
  content:"";position:absolute;left:0;top:.22em;width:3px;height:1.05em;
  background:var(--amber);border-radius:2px;box-shadow:0 0 12px rgba(255,179,92,.6);
}
.prose h3{font-size:21px;margin:32px 0 12px;color:var(--text-1);}
.prose ul,.prose ol{padding-left:24px;margin:0 0 1.2em;}
.prose li{margin:.4em 0;}
.prose ul li::marker{color:var(--primary);}
.prose ol li::marker{color:var(--amber);font-family:Inter,sans-serif;font-weight:700;}
.prose blockquote{
  margin:26px 0;padding:18px 22px;border-left:2px solid var(--primary);
  background:var(--glass);border-radius:0 var(--r-sm) var(--r-sm) 0;color:var(--text-2);
  backdrop-filter:blur(14px);-webkit-backdrop-filter:blur(14px);
}
.prose a{color:#7FB4FF;border-bottom:1px solid rgba(127,180,255,.45);transition:var(--ease);}
.prose a:hover{color:#A9CEFF;text-shadow:0 0 14px rgba(47,123,255,.6);}
.prose img{border-radius:12px;margin:22px 0;}
.prose table{width:100%;border-collapse:collapse;margin:24px 0;font-size:15px;border:1px solid var(--line);border-radius:12px;overflow:hidden;}
.prose th,.prose td{padding:12px 16px;border-bottom:1px solid var(--line);text-align:left;}
.prose th{background:var(--glass);color:var(--text-2);font-weight:600;}
.prose tr:last-child td{border-bottom:0;}
.table-scroll{overflow-x:auto;margin:24px 0;}
.empty-state{
  display:flex;flex-direction:column;align-items:center;gap:14px;text-align:center;
  padding:56px 28px;border-radius:var(--r-card);border:1px solid var(--glass-line);
  background:var(--glass);backdrop-filter:blur(14px);-webkit-backdrop-filter:blur(14px);
}
.empty-state svg{width:32px;height:32px;fill:none;stroke:var(--text-3);stroke-width:1.5;stroke-linecap:round;}
.empty-state p{font-size:14.5px;color:var(--text-2);}

/* 尾部序列 */
.tail-block{max-width:760px;margin:56px auto 0;}
.tail-title{font-size:14px;letter-spacing:.08em;color:var(--text-3);margin-bottom:16px;}
.tag-cloud{display:flex;flex-wrap:wrap;gap:10px;}
.tag-cloud a{
  display:inline-flex;align-items:center;height:34px;padding:0 16px;border-radius:999px;
  font-size:13.5px;color:var(--text-2);border:1px solid var(--glass-line);background:var(--glass);
  transition:var(--ease);
}
.tag-cloud a:hover{color:var(--text-1);border-color:rgba(47,123,255,.5);background:var(--primary-soft);transform:translateY(-2px);}
.related-grid{display:grid;grid-template-columns:repeat(3,minmax(0,1fr));gap:20px;}
.related-card{
  display:flex;flex-direction:column;gap:12px;padding:16px;border-radius:var(--r-sm);
  border:1px solid var(--glass-line);background:var(--glass);
  backdrop-filter:blur(14px);-webkit-backdrop-filter:blur(14px);transition:var(--ease);
}
.related-card:hover{transform:translateY(-4px);border-color:rgba(255,255,255,.28);box-shadow:var(--shadow-glow);}
.related-card img{width:100%;aspect-ratio:16/10;object-fit:cover;border-radius:10px;}
.related-card h3{font-size:15.5px;line-height:1.5;color:var(--text-1);}
.related-card time{font-size:12.5px;color:var(--text-3);}
.pn-grid{display:grid;grid-template-columns:1fr 1fr;gap:20px;}
.pn-card{
  display:flex;flex-direction:column;gap:10px;padding:20px;border-radius:var(--r-sm);
  border:1px solid var(--line);transition:var(--ease);
}
.pn-card:hover{border-color:rgba(47,123,255,.45);background:var(--glass);transform:translateY(-3px);}
.pn-card span{font-size:12.5px;color:var(--text-3);}
.pn-card strong{font-size:15.5px;font-weight:700;color:var(--text-1);line-height:1.5;}
.pn-card.next{text-align:right;align-items:flex-end;}

/* 侧栏 */
.side-col{position:sticky;top:104px;display:flex;flex-direction:column;gap:20px;}
.side-card{
  padding:22px;border-radius:var(--r-card);border:1px solid var(--glass-line);
  background:var(--glass);backdrop-filter:blur(14px);-webkit-backdrop-filter:blur(14px);
}
.side-card h2{font-size:15px;letter-spacing:.02em;color:var(--text-1);margin-bottom:16px;}
.side-list{display:flex;flex-direction:column;}
.side-list a{
  display:flex;align-items:center;justify-content:space-between;gap:12px;
  padding:13px 0;font-size:14px;color:var(--text-2);border-bottom:1px solid var(--line);transition:var(--ease);
}
.side-list a:last-child{border-bottom:0;}
.side-list a:hover{color:var(--text-1);padding-left:6px;}
.side-list a svg{width:15px;height:15px;fill:none;stroke:currentColor;stroke-width:1.6;stroke-linecap:round;flex:0 0 auto;}
.side-note{font-size:13px;line-height:1.8;color:var(--text-3);margin-top:14px;}

/* CTA 横幅 */
.tail-cta{margin-top:72px;}
.cta-band{
  display:flex;align-items:center;justify-content:space-between;gap:28px;flex-wrap:wrap;
  padding:36px 40px;border-radius:var(--r-card);border:1px solid var(--glass-line);
  background:linear-gradient(120deg,rgba(47,123,255,.16),rgba(39,224,208,.07) 55%,rgba(255,179,92,.08));
  backdrop-filter:blur(14px);-webkit-backdrop-filter:blur(14px);
}
.cta-band h2{font-size:24px;margin-bottom:8px;}
.cta-band p{font-size:14.5px;color:var(--text-2);max-width:520px;}
.btn-primary{
  display:inline-flex;align-items:center;justify-content:center;gap:8px;height:48px;padding:0 26px;
  border-radius:999px;background:var(--primary);color:#fff;font-size:14.5px;font-weight:700;
  box-shadow:0 0 0 1px rgba(47,123,255,.5),0 10px 28px rgba(47,123,255,.35);transition:var(--ease);
}
.btn-primary:hover{background:#3E88FF;box-shadow:0 0 0 1px rgba(47,123,255,.7),0 14px 36px rgba(47,123,255,.5);transform:translateY(-2px);}
.btn-primary:active{transform:scale(.98);}
.btn-ghost{
  display:inline-flex;align-items:center;justify-content:center;gap:8px;height:48px;padding:0 24px;
  border-radius:999px;border:1px solid var(--glass-line);background:rgba(255,255,255,.04);
  color:var(--text-1);font-size:14.5px;transition:var(--ease);
}
.btn-ghost:hover{background:var(--glass-2);border-color:var(--line-strong);transform:translateY(-2px);}

/* ============ 页脚 ============ */
.site-footer{
  position:relative;z-index:1;background:#05080F;border-top:1px solid var(--line);
  padding:72px 0 26px;
}
.foot-grid{display:grid;grid-template-columns:1.4fr 1fr 1fr 1.2fr;gap:0;}
.foot-col{padding:0 28px;border-left:1px solid var(--line);}
.foot-col:first-child{padding-left:0;border-left:0;}
.foot-brand{display:inline-flex;align-items:center;gap:10px;font-weight:800;font-size:16px;color:var(--text-1);margin-bottom:14px;}
.foot-brand .dot{width:4px;height:4px;border-radius:50%;background:var(--cyan);box-shadow:0 0 10px var(--cyan);}
.foot-col p{font-size:13.5px;line-height:1.85;color:var(--text-3);}
.foot-title{font-size:13.5px;font-weight:700;color:var(--text-1);margin-bottom:16px;letter-spacing:.02em;}
.foot-links{display:flex;flex-direction:column;gap:11px;}
.foot-links a{font-size:13.5px;color:var(--text-3);transition:var(--ease);}
.foot-links a:hover{color:var(--cyan);}
.foot-bottom{margin-top:52px;padding-top:22px;border-top:1px solid var(--line);text-align:center;font-size:13px;color:var(--text-3);}

/* ============ 响应式 ============ */
@media (max-width:1200px){
  .article-grid{grid-template-columns:minmax(0,1fr);gap:0;}
  .side-col{display:none;}
}
@media (max-width:1024px){
  .wrap{padding:0 28px;}
  .nav-links{gap:24px;}
  .nav-links a{font-size:14px;}
  .btn-mini{display:none;}
  .post-head h1{font-size:34px;}
  .foot-grid{grid-template-columns:1fr 1fr;gap:34px 0;}
  .foot-col:nth-child(3){padding-left:0;border-left:0;}
}
@media (max-width:768px){
  body{font-size:16px;}
  .wrap{padding:0 20px;}
  .nav-links{display:none;}
  .burger{display:inline-flex;}
  .crumb-row{padding:22px 0 4px;}
  .crumb-cur{max-width:180px;}
  .post-head h1{font-size:28px;}
  .prose{font-size:16.5px;padding-top:28px;}
  .prose h2{font-size:22px;}
  .prose h3{font-size:19px;}
  .related-grid{grid-template-columns:1fr;}
  .pn-grid{grid-template-columns:1fr;}
  .pn-card.next{text-align:left;align-items:flex-start;}
  .article-wrapper{padding-bottom:64px;}
  .cta-band{padding:28px 22px;}
  .foot-grid{grid-template-columns:1fr;gap:30px;}
  .foot-col{padding:0 0 0 0;border-left:0;border-top:1px solid var(--line);padding-top:26px;}
  .foot-col:first-child{border-top:0;padding-top:0;}
  .site-footer{padding:56px 0 22px;}
}
@media (max-width:520px){
  .post-head h1{font-size:25px;}
  .meta-row{gap:10px;font-size:12.5px;}
  .tag-cloud a{height:32px;padding:0 13px;}
  .btn-primary,.btn-ghost{width:100%;}
}

/* roulang page: category1 */
:root{
  --bg-base:#070B14;
  --bg-1:#0C1220;
  --bg-2:#111A2B;
  --glass:rgba(255,255,255,0.055);
  --glass-2:rgba(255,255,255,0.09);
  --glass-line:rgba(255,255,255,0.12);
  --primary:#2F7BFF;
  --primary-600:#1B5FE0;
  --primary-soft:rgba(47,123,255,0.16);
  --cyan:#27E0D0;
  --amber:#FFB35C;
  --text-1:#F2F6FF;
  --text-2:#A9B6CC;
  --text-3:#6E7C93;
  --line:rgba(255,255,255,0.10);
  --line-strong:rgba(255,255,255,0.18);
  --r-card:18px;
  --r-sm:14px;
  --r-btn:10px;
  --shadow-1:0 8px 24px rgba(0,0,0,.35);
  --shadow-glow:0 0 0 1px rgba(47,123,255,.35), 0 10px 30px rgba(47,123,255,.28);
  --ease:all .22s cubic-bezier(.2,.7,.3,1);
  --font-cn:"HarmonyOS Sans SC","Source Han Sans SC","Noto Sans SC","PingFang SC","Microsoft YaHei",sans-serif;
  --font-num:"Inter","HarmonyOS Sans SC","PingFang SC",sans-serif;
}
*{box-sizing:border-box;margin:0;padding:0}
html{scroll-behavior:smooth}
body{
  font-family:var(--font-cn);
  background:var(--bg-base);
  color:var(--text-1);
  font-size:16.5px;
  line-height:1.75;
  letter-spacing:0;
  -webkit-font-smoothing:antialiased;
  overflow-x:hidden;
  position:relative;
}
body::before{
  content:"";
  position:fixed;
  inset:0;
  pointer-events:none;
  z-index:0;
  background:
    radial-gradient(900px 600px at 8% 4%, rgba(39,224,208,.075), transparent 62%),
    radial-gradient(800px 560px at 96% 96%, rgba(255,179,92,.06), transparent 60%);
}
body::after{
  content:"";
  position:fixed;
  inset:0;
  pointer-events:none;
  z-index:0;
  background-image:
    linear-gradient(to right, rgba(255,255,255,.03) 1px, transparent 1px),
    linear-gradient(to bottom, rgba(255,255,255,.03) 1px, transparent 1px);
  background-size:52px 52px;
}
img{display:block;max-width:100%;height:auto}
a{color:inherit;text-decoration:none}
button,input{font:inherit;color:inherit}
button{background:none;border:0;cursor:pointer}
summary{list-style:none;cursor:pointer}
summary::-webkit-details-marker{display:none}
::selection{background:rgba(47,123,255,.35)}
.wrap{
  width:100%;
  max-width:1280px;
  margin:0 auto;
  padding:0 40px;
  position:relative;
  z-index:2;
}
.num,.metric{font-family:var(--font-num);font-variant-numeric:tabular-nums}

/* ---------- header ---------- */
.site-header{
  position:fixed;
  top:0;left:0;right:0;
  z-index:60;
  height:76px;
  display:flex;
  align-items:center;
  transition:var(--ease);
  border-bottom:1px solid transparent;
}
.site-header.is-scrolled{
  height:64px;
  background:rgba(7,11,20,.82);
  backdrop-filter:blur(16px);
  -webkit-backdrop-filter:blur(16px);
  border-bottom:1px solid var(--line);
}
.nav-inner{
  display:flex;
  align-items:center;
  justify-content:space-between;
  gap:28px;
  width:100%;
}
.logo{
  display:inline-flex;
  align-items:center;
  gap:10px;
  font-size:17px;
  font-weight:700;
  letter-spacing:-.01em;
  white-space:nowrap;
}
.logo .dot{
  width:6px;height:6px;
  border-radius:50%;
  background:var(--cyan);
  box-shadow:0 0 10px rgba(39,224,208,.85);
  flex:0 0 auto;
}
.nav-links{
  display:flex;
  align-items:center;
  gap:36px;
  font-size:14.5px;
  letter-spacing:.02em;
}
.nav-links a{
  color:var(--text-2);
  position:relative;
  padding:6px 0;
  transition:var(--ease);
}
.nav-links a::after{
  content:"";
  position:absolute;
  left:0;right:0;bottom:0;
  height:2px;
  border-radius:2px;
  background:var(--primary);
  box-shadow:0 0 10px rgba(47,123,255,.9);
  transform:scaleX(0);
  transform-origin:left;
  transition:var(--ease);
}
.nav-links a:hover{color:var(--text-1)}
.nav-links a:hover::after{transform:scaleX(1)}
.nav-links a.is-active{color:var(--text-1);font-weight:600}
.nav-links a.is-active::after{transform:scaleX(1)}
.nav-right{display:flex;align-items:center;gap:14px}
.btn-mini{
  display:inline-flex;
  align-items:center;
  height:38px;
  padding:0 18px;
  border-radius:999px;
  font-size:14px;
  background:var(--glass);
  border:1px solid var(--glass-line);
  color:var(--text-1);
  backdrop-filter:blur(12px);
  transition:var(--ease);
  white-space:nowrap;
}
.btn-mini:hover{background:var(--glass-2);border-color:var(--line-strong);transform:translateY(-1px)}
.btn-mini:active{transform:scale(.98)}
.icon-btn{
  width:44px;height:44px;
  display:inline-flex;
  align-items:center;
  justify-content:center;
  border-radius:12px;
  color:var(--text-2);
  transition:var(--ease);
}
.icon-btn:hover{color:var(--text-1);background:var(--glass)}
.icon-btn svg{
  width:20px;height:20px;
  fill:none;
  stroke:currentColor;
  stroke-width:1.5;
  stroke-linecap:round;
}
.burger{display:none;flex-direction:column;gap:6px;align-items:center}
.burger span{display:block;width:20px;height:1.5px;background:currentColor;border-radius:2px;transition:var(--ease)}
.burger.is-open span:nth-child(1){transform:translateY(3.75px) rotate(45deg)}
.burger.is-open span:nth-child(2){transform:translateY(-3.75px) rotate(-45deg)}
:focus-visible{outline:2px solid var(--primary);outline-offset:3px}

/* drawer */
.drawer{
  position:fixed;
  inset:0;
  z-index:55;
  background:rgba(7,11,20,.96);
  backdrop-filter:blur(18px);
  -webkit-backdrop-filter:blur(18px);
  padding:104px 24px 32px;
  display:flex;
  flex-direction:column;
  transform:translateY(-12px);
  opacity:0;
  visibility:hidden;
  transition:var(--ease);
}
.drawer.is-open{opacity:1;visibility:visible;transform:translateY(0)}
.drawer a.drawer-link{
  display:flex;
  align-items:center;
  justify-content:space-between;
  min-height:56px;
  font-size:20px;
  border-bottom:1px solid var(--line);
  color:var(--text-1);
}
.drawer a.drawer-link span{color:var(--text-3);font-size:14px}
.drawer-foot{margin-top:auto;padding-top:24px;display:flex;flex-direction:column;gap:16px}
.drawer-foot .brand{display:flex;align-items:center;gap:10px;font-weight:700}
.drawer-foot .brand i{width:6px;height:6px;border-radius:50%;background:var(--cyan);display:block}

/* ---------- buttons ---------- */
.btn{
  display:inline-flex;
  align-items:center;
  justify-content:center;
  gap:10px;
  min-height:48px;
  padding:0 26px;
  border-radius:999px;
  font-size:15px;
  font-weight:600;
  transition:var(--ease);
  white-space:nowrap;
}
.btn-primary{
  background:linear-gradient(180deg,var(--primary),var(--primary-600));
  color:#fff;
  box-shadow:var(--shadow-glow);
}
.btn-primary:hover{filter:brightness(1.09);box-shadow:0 0 0 1px rgba(47,123,255,.5),0 14px 38px rgba(47,123,255,.4)}
.btn-primary:active{transform:scale(.98)}
.btn-ghost{
  background:var(--glass);
  border:1px solid var(--glass-line);
  color:var(--text-1);
  backdrop-filter:blur(12px);
}
.btn-ghost:hover{background:var(--glass-2);border-color:var(--line-strong)}
.btn-ghost:active{transform:scale(.98)}
.btn:disabled{opacity:.4;cursor:not-allowed}

/* ---------- page head ---------- */
.page-head{padding:132px 0 0}
.crumb{
  display:flex;
  flex-wrap:wrap;
  align-items:center;
  gap:10px;
  font-size:13px;
  color:var(--text-3);
  margin-bottom:22px;
}
.crumb a{color:var(--text-2);transition:var(--ease)}
.crumb a:hover{color:var(--text-1)}
.crumb i{font-style:normal;color:var(--text-3);opacity:.6}
.page-head h1{
  font-size:54px;
  line-height:1.14;
  font-weight:800;
  letter-spacing:-.01em;
  max-width:15em;
}
.page-head h1 em{
  font-style:normal;
  color:var(--cyan);
}
.lead{
  margin-top:20px;
  max-width:720px;
  font-size:16.5px;
  color:var(--text-2);
}
.head-tags{display:flex;flex-wrap:wrap;gap:10px;margin-top:26px}
.badge{
  display:inline-flex;
  align-items:center;
  gap:6px;
  height:28px;
  padding:0 12px;
  border-radius:999px;
  font-size:13px;
  border:1px solid rgba(39,224,208,.32);
  background:rgba(39,224,208,.08);
  color:#9CF3EA;
}
.badge.amber{
  border-color:rgba(255,179,92,.36);
  background:rgba(255,179,92,.08);
  color:var(--amber);
}
.head-cover{
  margin-top:44px;
  border-radius:18px;
  overflow:hidden;
  border:1px solid var(--glass-line);
  position:relative;
  box-shadow:var(--shadow-1);
}
.head-cover img{width:100%;aspect-ratio:21/8;object-fit:cover}
.head-cover::after{
  content:"";
  position:absolute;
  inset:0;
  background:linear-gradient(180deg,rgba(7,11,20,.12),rgba(7,11,20,.62));
}
.head-cover figcaption{
  position:absolute;
  left:28px;bottom:22px;
  z-index:2;
  font-size:13px;
  color:rgba(242,246,255,.82);
  background:rgba(7,11,20,.5);
  border:1px solid var(--glass-line);
  backdrop-filter:blur(10px);
  border-radius:999px;
  padding:7px 16px;
}

/* ---------- sections ---------- */
.sec{padding:96px 0 0}
.sec-head{max-width:760px;margin-bottom:44px}
.sec-head .eyebrow{
  display:inline-flex;
  align-items:center;
  gap:8px;
  font-size:13px;
  letter-spacing:.14em;
  color:var(--cyan);
  margin-bottom:14px;
}
.sec-head .eyebrow::before{
  content:"";
  width:22px;height:1px;background:rgba(39,224,208,.7);
}
.sec-head h2{
  font-size:34px;
  line-height:1.28;
  font-weight:800;
  letter-spacing:-.01em;
}
.sec-head p{margin-top:14px;color:var(--text-2);font-size:15.5px;max-width:640px}

/* flow alternating */
.flow{display:flex;flex-direction:column;gap:28px}
.flow-item{
  display:grid;
  grid-template-columns:minmax(0,1fr) minmax(0,1.05fr);
  gap:40px;
  align-items:center;
  padding:30px;
  border-radius:var(--r-card);
  background:var(--glass);
  border:1px solid var(--glass-line);
  backdrop-filter:blur(14px);
  transition:var(--ease);
}
.flow-item:hover{
  border-color:rgba(255,255,255,.168);
  transform:translateY(-4px);
  box-shadow:0 0 0 1px rgba(47,123,255,.22),0 14px 34px rgba(47,123,255,.16);
}
.flow-item:nth-child(even) .flow-media{order:2}
.flow-item:nth-child(even) .flow-body{order:1}
.flow-media{
  border-radius:var(--r-sm);
  overflow:hidden;
  border:1px solid var(--glass-line);
}
.flow-media img{width:100%;aspect-ratio:16/11;object-fit:cover}
.flow-num{
  display:inline-flex;
  align-items:center;
  gap:10px;
  font-size:13px;
  color:var(--amber);
  letter-spacing:.08em;
  margin-bottom:12px;
}
.flow-num b{
  font-family:var(--font-num);
  font-size:14px;
  font-weight:600;
  letter-spacing:0;
  border:1px solid rgba(255,179,92,.38);
  background:rgba(255,179,92,.08);
  border-radius:999px;
  padding:2px 10px;
}
.flow-body h3{font-size:21px;font-weight:700;line-height:1.4;letter-spacing:-.01em}
.flow-body p{margin-top:12px;color:var(--text-2);font-size:15.5px}
.flow-body ul{margin-top:14px;display:flex;flex-direction:column;gap:8px}
.flow-body li{
  position:relative;
  padding-left:18px;
  font-size:14.5px;
  color:var(--text-2);
}
.flow-body li::before{
  content:"";
  position:absolute;
  left:0;top:.62em;
  width:7px;height:7px;
  border-radius:2px;
  background:var(--primary);
  box-shadow:0 0 8px rgba(47,123,255,.7);
}

/* prepare split */
.split{
  display:grid;
  grid-template-columns:minmax(0,8fr) minmax(0,4fr);
  gap:24px;
  align-items:start;
}
.panel{
  border-radius:var(--r-card);
  background:var(--glass);
  border:1px solid var(--glass-line);
  backdrop-filter:blur(14px);
  padding:28px;
}
.check-list{display:flex;flex-direction:column}
.check-list li{
  display:flex;
  gap:16px;
  padding:18px 0;
  border-bottom:1px solid var(--line);
  list-style:none;
}
.check-list li:last-child{border-bottom:0;padding-bottom:0}
.check-list li:first-child{padding-top:0}
.check-index{
  flex:0 0 auto;
  width:30px;height:30px;
  border-radius:9px;
  display:grid;place-items:center;
  font-family:var(--font-num);
  font-size:13px;
  color:var(--cyan);
  border:1px solid rgba(39,224,208,.32);
  background:rgba(39,224,208,.07);
}
.check-list h4{font-size:16.5px;font-weight:600}
.check-list p{font-size:14.5px;color:var(--text-2);margin-top:4px}
.side-list{display:flex;flex-direction:column}
.side-list li{
  list-style:none;
  padding:14px 0;
  border-bottom:1px solid var(--line);
  font-size:14.5px;
  color:var(--text-2);
  display:flex;
  justify-content:space-between;
  gap:12px;
}
.side-list li:last-child{border-bottom:0;padding-bottom:0}
.side-list li b{color:var(--text-1);font-weight:600;font-family:var(--font-num)}
.side-note{
  margin-top:20px;
  font-size:13px;
  color:var(--text-3);
  border-top:1px solid var(--line);
  padding-top:16px;
}

/* blocked table-ish cards */
.grid-2{display:grid;grid-template-columns:repeat(2,minmax(0,1fr));gap:24px}
.trouble{
  border-radius:var(--r-card);
  border:1px solid var(--glass-line);
  background:linear-gradient(180deg,rgba(255,255,255,.055),rgba(255,255,255,.02));
  padding:26px;
  transition:var(--ease);
}
.trouble:hover{transform:translateY(-4px);border-color:rgba(255,255,255,.168);box-shadow:0 0 0 1px rgba(39,224,208,.2),0 12px 30px rgba(0,0,0,.4)}
.trouble h3{font-size:18px;font-weight:700;display:flex;align-items:center;gap:10px}
.trouble h3 i{
  width:8px;height:8px;border-radius:2px;
  background:var(--amber);
  box-shadow:0 0 10px rgba(255,179,92,.8);
  display:inline-block;
}
.trouble p{margin-top:10px;font-size:14.5px;color:var(--text-2)}
.trouble .row{
  margin-top:16px;
  padding-top:14px;
  border-top:1px solid var(--line);
  font-size:14px;
  color:var(--text-3);
  display:flex;
  justify-content:space-between;
  gap:12px;
}
.trouble .row span{color:var(--cyan)}

/* stat strip */
.stats{
  display:grid;
  grid-template-columns:repeat(3,minmax(0,1fr));
  gap:24px;
  margin-top:8px;
}
.stat{
  border-radius:var(--r-card);
  border:1px solid var(--glass-line);
  background:var(--glass);
  backdrop-filter:blur(14px);
  padding:26px;
}
.stat .metric{font-size:40px;font-weight:700;line-height:1.1;letter-spacing:-.02em}
.stat .metric small{font-size:18px;color:var(--amber);margin-left:4px;font-weight:600}
.stat p{margin-top:10px;font-size:14.5px;color:var(--text-2)}
.stat .bar{height:4px;border-radius:2px;background:rgba(255,255,255,.08);margin-top:18px;overflow:hidden}
.stat .bar i{display:block;height:100%;border-radius:2px;background:linear-gradient(90deg,var(--cyan),var(--primary))}

/* faq */
.faq-list{
  border-top:1px solid var(--line);
}
.faq-item{border-bottom:1px solid var(--line)}
.faq-item summary{
  display:flex;
  align-items:center;
  justify-content:space-between;
  gap:20px;
  padding:22px 4px;
  font-size:17px;
  font-weight:600;
  transition:var(--ease);
}
.faq-item summary:hover{color:#fff;padding-left:10px}
.faq-icon{
  position:relative;
  flex:0 0 auto;
  width:22px;height:22px;
  transition:transform .22s cubic-bezier(.2,.7,.3,1);
}
.faq-icon::before,.faq-icon::after{
  content:"";
  position:absolute;
  background:var(--text-2);
  border-radius:2px;
}
.faq-icon::before{left:50%;top:4px;bottom:4px;width:1.5px;transform:translateX(-50%)}
.faq-icon::after{top:50%;left:4px;right:4px;height:1.5px;transform:translateY(-50%)}
.faq-item[open] .faq-icon{transform:rotate(45deg)}
.faq-item[open] .faq-icon::before,.faq-item[open] .faq-icon::after{background:var(--primary)}
.faq-body{
  padding:0 4px 24px;
  font-size:15px;
  line-height:1.85;
  color:var(--text-2);
  max-width:820px;
}

/* cta */
.cta-band{
  margin-top:96px;
  border-radius:22px;
  border:1px solid var(--glass-line);
  background:
    radial-gradient(620px 320px at 88% 12%, rgba(47,123,255,.24), transparent 68%),
    linear-gradient(180deg,rgba(255,255,255,.07),rgba(255,255,255,.025));
  backdrop-filter:blur(16px);
  padding:44px;
  display:grid;
  grid-template-columns:minmax(0,1.4fr) minmax(0,1fr);
  gap:36px;
  align-items:center;
}
.cta-band h2{font-size:30px;font-weight:800;letter-spacing:-.01em;line-height:1.3}
.cta-band p{margin-top:12px;color:var(--text-2);font-size:15.5px;max-width:520px}
.cta-actions{display:flex;flex-wrap:wrap;gap:16px;justify-content:flex-end}

/* tail links */
.tail{
  margin-top:72px;
  padding-top:32px;
  border-top:1px solid var(--line);
  display:flex;
  flex-wrap:wrap;
  gap:28px;
  align-items:center;
  justify-content:space-between;
}
.tail-links{display:flex;flex-wrap:wrap;gap:26px}
.text-link{
  display:inline-flex;
  align-items:center;
  gap:8px;
  font-size:14.5px;
  color:var(--text-2);
  transition:var(--ease);
}
.text-link:hover{color:var(--text-1)}
.text-link svg{
  width:16px;height:16px;
  fill:none;stroke:currentColor;stroke-width:1.6;stroke-linecap:round;stroke-linejoin:round;
  transition:var(--ease);
}
.text-link:hover svg{transform:translateX(4px);stroke:var(--cyan)}
.tail .tick{
  display:flex;align-items:center;gap:14px;
  font-size:13px;color:var(--text-3);letter-spacing:.06em;
}
.tail .tick i{width:26px;height:1px;background:var(--line-strong);display:block}

/* footer */
.site-footer{
  margin-top:96px;
  background:#050810;
  border-top:1px solid var(--line);
  position:relative;
  z-index:2;
}
.foot-grid{
  display:grid;
  grid-template-columns:1.5fr 1fr 1fr 1.3fr;
  gap:0;
  padding:72px 0 56px;
}
.foot-col{padding:0 28px;border-left:1px solid var(--line)}
.foot-col:first-child{border-left:0;padding-left:0}
.foot-brand{
  display:inline-flex;
  align-items:center;
  gap:10px;
  font-size:16.5px;
  font-weight:700;
  margin-bottom:16px;
}
.foot-brand .dot{
  width:6px;height:6px;border-radius:50%;
  background:var(--cyan);
  box-shadow:0 0 10px rgba(39,224,208,.85);
}
.foot-col p{font-size:14px;color:var(--text-3);line-height:1.8;max-width:340px}
.foot-title{font-size:14px;color:var(--text-1);font-weight:600;margin-bottom:18px}
.foot-links{display:flex;flex-direction:column;gap:12px}
.foot-links a{font-size:14px;color:var(--text-3);transition:var(--ease)}
.foot-links a:hover{color:var(--text-1);transform:translateX(3px)}
.foot-bottom{
  border-top:1px solid var(--line);
  padding:22px 0 30px;
  text-align:center;
  font-size:13px;
  color:var(--text-3);
}

/* responsive */
@media (max-width:1200px){
  .wrap{padding:0 32px}
  .nav-links{gap:24px}
  .page-head h1{font-size:44px}
  .split{grid-template-columns:1fr}
  .cta-band{grid-template-columns:1fr;padding:36px}
  .cta-actions{justify-content:flex-start}
}
@media (max-width:1024px){
  .nav-links,.search-btn,.btn-mini{display:none}
  .burger{display:inline-flex}
  .page-head{padding-top:116px}
  .flow-item{grid-template-columns:1fr;gap:24px;padding:24px}
  .flow-item:nth-child(even) .flow-media{order:0}
  .flow-item:nth-child(even) .flow-body{order:0}
  .foot-grid{grid-template-columns:1fr 1fr;gap:40px 0}
  .foot-col:nth-child(3){border-left:0;padding-left:0}
  .foot-col:nth-child(1),.foot-col:nth-child(2){border-bottom:1px solid var(--line);padding-bottom:32px}
}
@media (max-width:768px){
  body{font-size:16px}
  .wrap{padding:0 20px}
  .sec{padding:64px 0 0}
  .site-footer{margin-top:64px}
  .page-head h1{font-size:32px}
  .sec-head h2{font-size:26px}
  .sec-head{margin-bottom:30px}
  .flow-body h3{font-size:18px}
  .grid-2{grid-template-columns:1fr}
  .stats{grid-template-columns:1fr}
  .head-cover img{aspect-ratio:16/10}
  .head-cover figcaption{left:16px;right:16px;bottom:16px;text-align:center;font-size:12px}
  .cta-band{margin-top:64px;padding:28px;border-radius:18px}
  .cta-band h2{font-size:24px}
  .cta-actions .btn{width:100%}
  .tail{flex-direction:column;align-items:flex-start;gap:20px}
  .foot-grid{grid-template-columns:1fr;padding:56px 0 40px}
  .foot-col{padding:0 0 28px;border-left:0}
  .foot-col:not(:last-child){border-bottom:1px solid var(--line)}
  .foot-col:last-child{padding-bottom:0}
}
@media (max-width:520px){
  .page-head{padding-top:104px}
  .panel{padding:20px}
  .flow-item{padding:20px}
  .stat .metric{font-size:32px}
  .trouble{padding:20px}
  .faq-item summary{font-size:16px;padding:18px 0}
}

/* roulang page: category3 */
:root{
  --bg-base:#070B14;
  --bg-1:#0C1220;
  --bg-2:#111A2B;
  --glass:rgba(255,255,255,.055);
  --glass-2:rgba(255,255,255,.09);
  --glass-line:rgba(255,255,255,.12);
  --primary:#2F7BFF;
  --primary-600:#1B5FE0;
  --primary-soft:rgba(47,123,255,.16);
  --cyan:#27E0D0;
  --amber:#FFB35C;
  --text-1:#F2F6FF;
  --text-2:#A9B6CC;
  --text-3:#6E7C93;
  --line:rgba(255,255,255,.10);
  --line-strong:rgba(255,255,255,.18);
  --r-card:18px;
  --r-sm:14px;
  --r-btn:10px;
  --shadow-1:0 8px 24px rgba(0,0,0,.35);
  --shadow-glow:0 0 0 1px rgba(47,123,255,.35),0 10px 30px rgba(47,123,255,.28);
  --ease:all .22s cubic-bezier(.2,.7,.3,1);
}
*{box-sizing:border-box;}
html,body{margin:0;padding:0;}
body{
  background:var(--bg-base);
  color:var(--text-1);
  font-family:"HarmonyOS Sans SC","Source Han Sans SC","PingFang SC","Microsoft YaHei",sans-serif;
  font-size:16.5px;
  line-height:1.75;
  letter-spacing:0;
  -webkit-font-smoothing:antialiased;
  overflow-x:hidden;
}
body::before{
  content:"";
  position:fixed;
  inset:0;
  pointer-events:none;
  z-index:0;
  background:
    radial-gradient(680px 520px at 8% 2%, rgba(39,224,208,.10), transparent 62%),
    radial-gradient(760px 560px at 96% 96%, rgba(255,179,92,.07), transparent 64%);
}
body::after{
  content:"";
  position:fixed;
  inset:0;
  pointer-events:none;
  z-index:0;
  opacity:.03;
  background-image:
    linear-gradient(to right, rgba(255,255,255,.9) 1px, transparent 1px),
    linear-gradient(to bottom, rgba(255,255,255,.9) 1px, transparent 1px);
  background-size:64px 64px;
}
img{max-width:100%;display:block;border:0;}
a{color:inherit;text-decoration:none;transition:var(--ease);}
button,input{font-family:inherit;font-size:inherit;color:inherit;}
h1,h2,h3,h4{margin:0;font-weight:700;letter-spacing:-.01em;line-height:1.25;}
p{margin:0;}
ul,ol{margin:0;padding:0;list-style:none;}
.num{font-variant-numeric:tabular-nums;font-feature-settings:"tnum";}
.wrap{width:100%;max-width:1280px;margin:0 auto;padding:0 40px;position:relative;z-index:1;}

/* ---------- header ---------- */
.site-header{
  position:fixed;
  top:0;left:0;right:0;
  z-index:60;
  height:76px;
  transition:var(--ease);
}
.site-header::after{
  content:"";
  position:absolute;left:0;right:0;bottom:0;height:1px;
  background:transparent;
  transition:var(--ease);
}
.site-header.is-scrolled{
  height:64px;
  background:rgba(7,11,20,.72);
  backdrop-filter:blur(16px);
  -webkit-backdrop-filter:blur(16px);
}
.site-header.is-scrolled::after{background:var(--line);}
.nav-inner{
  height:100%;
  display:flex;
  align-items:center;
  justify-content:space-between;
  gap:28px;
}
.logo{
  display:inline-flex;
  align-items:center;
  gap:9px;
  font-size:17px;
  font-weight:800;
  letter-spacing:-.01em;
  color:var(--text-1);
  white-space:nowrap;
}
.logo .dot{
  width:4px;height:4px;border-radius:50%;
  background:var(--cyan);
  box-shadow:0 0 10px rgba(39,224,208,.9);
  flex:none;
}
.nav-links{
  display:flex;
  align-items:center;
  gap:36px;
  flex:1;
  justify-content:center;
}
.nav-links a{
  position:relative;
  font-size:14.5px;
  letter-spacing:.02em;
  color:var(--text-2);
  padding:6px 0;
}
.nav-links a::after{
  content:"";
  position:absolute;left:0;right:0;bottom:-2px;
  height:2px;border-radius:2px;
  background:linear-gradient(90deg,var(--primary),var(--cyan));
  box-shadow:0 0 10px rgba(47,123,255,.75);
  transform:scaleX(0);
  transform-origin:left;
  transition:var(--ease);
}
.nav-links a:hover{color:var(--text-1);}
.nav-links a:hover::after{transform:scaleX(1);}
.nav-links a.is-active{color:var(--text-1);font-weight:600;}
.nav-links a.is-active::after{transform:scaleX(1);}
.nav-right{display:flex;align-items:center;gap:12px;}
.btn-mini{
  display:inline-flex;align-items:center;justify-content:center;
  height:38px;padding:0 18px;
  font-size:14px;
  border-radius:var(--r-btn);
  background:var(--glass);
  border:1px solid var(--glass-line);
  backdrop-filter:blur(14px);
  -webkit-backdrop-filter:blur(14px);
  color:var(--text-1);
  white-space:nowrap;
}
.btn-mini:hover{background:var(--glass-2);border-color:var(--line-strong);transform:translateY(-1px);}
.icon-btn{
  width:44px;height:44px;
  display:inline-flex;align-items:center;justify-content:center;
  background:transparent;
  border:0;border-radius:var(--r-btn);
  cursor:pointer;
  color:var(--text-2);
  transition:var(--ease);
}
.icon-btn:hover{color:var(--text-1);background:var(--glass);}
.icon-btn svg{width:19px;height:19px;fill:none;stroke:currentColor;stroke-width:1.5;stroke-linecap:round;stroke-linejoin:round;}
.burger{display:none;flex-direction:column;gap:6px;}
.burger span{display:block;width:20px;height:1.5px;background:var(--text-2);border-radius:2px;transition:var(--ease);}
.burger:hover span{background:var(--text-1);}

/* drawer */
.drawer{
  position:fixed;
  inset:0;
  z-index:55;
  background:rgba(7,11,20,.94);
  backdrop-filter:blur(20px);
  -webkit-backdrop-filter:blur(20px);
  padding:104px 24px 32px;
  display:flex;
  flex-direction:column;
  opacity:0;visibility:hidden;transform:translateY(-10px);
  transition:var(--ease);
}
.drawer.open{opacity:1;visibility:visible;transform:translateY(0);}
.drawer a.drawer-link{
  display:block;
  font-size:20px;
  padding:18px 4px;
  border-bottom:1px solid var(--line);
  color:var(--text-1);
}
.drawer a.drawer-link:hover{color:var(--cyan);padding-left:10px;}
.drawer-foot{margin-top:auto;padding-top:28px;border-top:1px solid var(--line);}
.drawer-foot .d-brand{display:flex;align-items:center;gap:9px;font-weight:800;font-size:16px;margin-bottom:16px;}
.drawer-foot .d-brand i{width:4px;height:4px;border-radius:50%;background:var(--cyan);box-shadow:0 0 10px rgba(39,224,208,.9);display:block;}

/* ---------- buttons ---------- */
.btn{
  display:inline-flex;align-items:center;justify-content:center;gap:8px;
  min-height:46px;
  padding:0 26px;
  font-size:15px;
  font-weight:600;
  border-radius:999px;
  border:1px solid transparent;
  cursor:pointer;
  transition:var(--ease);
  white-space:nowrap;
}
.btn-primary{
  background:linear-gradient(180deg,#3D86FF,var(--primary-600));
  color:#fff;
  box-shadow:0 0 0 1px rgba(47,123,255,.5) inset,0 10px 26px rgba(47,123,255,.32);
}
.btn-primary:hover{filter:brightness(1.08);box-shadow:0 0 0 1px rgba(47,123,255,.7) inset,0 14px 34px rgba(47,123,255,.45);transform:translateY(-2px);}
.btn-ghost{
  background:var(--glass);
  border:1px solid var(--glass-line);
  backdrop-filter:blur(14px);
  -webkit-backdrop-filter:blur(14px);
  color:var(--text-1);
}
.btn-ghost:hover{background:var(--glass-2);border-color:var(--line-strong);transform:translateY(-2px);}
.btn:active{transform:scale(.98);}
.btn:focus-visible,a:focus-visible,button:focus-visible,input:focus-visible{
  outline:2px solid var(--primary);
  outline-offset:2px;
}
.text-link{
  display:inline-flex;align-items:center;gap:8px;
  font-size:14.5px;
  color:var(--cyan);
  font-weight:600;
}
.text-link svg{width:16px;height:16px;fill:none;stroke:currentColor;stroke-width:1.6;stroke-linecap:round;stroke-linejoin:round;transition:var(--ease);}
.text-link:hover svg{transform:translateX(4px);}

/* ---------- badges ---------- */
.badge{
  display:inline-flex;align-items:center;gap:6px;
  height:26px;padding:0 12px;
  font-size:12.5px;
  border-radius:999px;
  border:1px solid var(--glass-line);
  background:rgba(255,255,255,.06);
  color:var(--text-2);
}
.badge-cyan{border-color:rgba(39,224,208,.35);background:rgba(39,224,208,.09);color:#8FF0E6;}
.badge-amber{border-color:rgba(255,179,92,.35);background:rgba(255,179,92,.09);color:#FFD2A0;}
.badge-num{font-variant-numeric:tabular-nums;}

/* ---------- main / sections ---------- */
main{position:relative;z-index:1;padding-top:76px;}
.section{padding:96px 0;}
.section-sm{padding:64px 0;}
.sec-head{display:flex;align-items:flex-end;justify-content:space-between;gap:24px;margin-bottom:44px;}
.sec-title{font-size:34px;}
.sec-sub{margin-top:12px;color:var(--text-2);font-size:15px;max-width:640px;}
.eyebrow{
  display:inline-flex;align-items:center;gap:8px;
  font-size:13px;letter-spacing:.14em;
  color:var(--cyan);
  margin-bottom:16px;
}
.eyebrow::before{content:"";width:18px;height:1px;background:var(--cyan);opacity:.7;}

/* ---------- breadcrumb ---------- */
.crumb{
  display:flex;align-items:center;gap:10px;
  font-size:13px;
  color:var(--text-3);
  padding-top:38px;
}
.crumb a:hover{color:var(--cyan);}
.crumb span.sep{opacity:.5;}

/* ---------- page head ---------- */
.pagehead{
  position:relative;
  padding-bottom:0;
}
.pagehead-inner{padding:22px 0 40px;max-width:860px;}
.pagehead h1{
  font-size:54px;
  font-weight:800;
  letter-spacing:-.02em;
  margin-bottom:18px;
}
.pagehead h1 em{
  font-style:normal;
  color:var(--cyan);
}
.lede{
  font-size:16.5px;
  color:var(--text-2);
  max-width:700px;
}
.head-meta{display:flex;flex-wrap:wrap;gap:10px;margin-top:24px;}

/* ---------- wide banner ---------- */
.wide-banner{
  position:relative;
  margin-top:14px;
  border-radius:var(--r-card);
  overflow:hidden;
  border:1px solid var(--glass-line);
  box-shadow:var(--shadow-1);
  height:400px;
}
.wide-banner img{
  width:100%;height:100%;
  object-fit:cover;
  transform:scale(1.02);
}
.wide-banner::after{
  content:"";
  position:absolute;inset:0;
  background:linear-gradient(180deg,rgba(7,11,20,.15) 0%,rgba(7,11,20,.72) 100%);
}
.wide-banner .banner-cap{
  position:absolute;left:32px;right:32px;bottom:28px;
  display:flex;flex-wrap:wrap;gap:12px;align-items:center;
  z-index:2;
}
.banner-cap .cap-text{font-size:14px;color:#DCE6F7;}
.banner-cap .cap-line{flex:1;height:1px;background:linear-gradient(90deg,rgba(255,255,255,.35),transparent);min-width:40px;}

/* ---------- glass card ---------- */
.glass{
  background:var(--glass);
  border:1px solid var(--glass-line);
  border-radius:var(--r-card);
  backdrop-filter:blur(14px);
  -webkit-backdrop-filter:blur(14px);
  padding:28px;
  transition:var(--ease);
}
.glass:hover{
  border-color:var(--line-strong);
  transform:translateY(-4px);
  box-shadow:0 0 0 1px rgba(47,123,255,.22),0 12px 30px rgba(47,123,255,.16);
}

/* ---------- flow (steps) ---------- */
.flow{
  display:grid;
  grid-template-columns:repeat(4,1fr);
  gap:24px;
  margin-top:8px;
}
.flow-step{
  position:relative;
  padding-top:64px;
}
.flow-step .node-line{
  position:absolute;
  top:16px;left:26px;right:-24px;
  height:1px;
  background:linear-gradient(90deg,rgba(255,179,92,.55),rgba(255,255,255,.08));
}
.flow-step:last-child .node-line{display:none;}
.flow-step .node{
  position:absolute;top:8px;left:0;
  width:17px;height:17px;border-radius:50%;
  background:var(--bg-base);
  border:1px solid var(--amber);
  box-shadow:0 0 0 5px rgba(255,179,92,.09);
}
.flow-step .node::after{
  content:"";
  position:absolute;inset:4px;
  border-radius:50%;
  background:var(--amber);
  opacity:.85;
}
.flow-step h3{font-size:19px;margin-bottom:10px;}
.flow-step .step-num{
  font-size:12.5px;
  letter-spacing:.12em;
  color:var(--amber);
  margin-bottom:10px;
  display:block;
}
.flow-step p{font-size:14.5px;color:var(--text-2);line-height:1.8;}
.flow-step .step-note{
  margin-top:16px;
  padding-top:14px;
  border-top:1px solid var(--line);
  font-size:13px;
  color:var(--text-3);
}

/* ---------- device grid ---------- */
.device-grid{
  display:grid;
  grid-template-columns:repeat(4,1fr);
  gap:24px;
}
.device-card{position:relative;overflow:hidden;}
.device-card .d-ico{
  width:42px;height:42px;
  border-radius:12px;
  display:flex;align-items:center;justify-content:center;
  background:var(--primary-soft);
  border:1px solid rgba(47,123,255,.3);
  margin-bottom:18px;
}
.device-card .d-ico svg{width:20px;height:20px;fill:none;stroke:var(--cyan);stroke-width:1.5;stroke-linecap:round;stroke-linejoin:round;}
.device-card h3{font-size:18px;margin-bottom:10px;}
.device-card p{font-size:14.5px;color:var(--text-2);}
.device-card .d-tag{margin-top:18px;display:inline-flex;}

/* ---------- mechanism split ---------- */
.split{
  display:grid;
  grid-template-columns:7fr 5fr;
  gap:24px;
  align-items:stretch;
}
.split-media{
  border-radius:var(--r-card);
  overflow:hidden;
  border:1px solid var(--glass-line);
  position:relative;
  min-height:380px;
}
.split-media img{width:100%;height:100%;object-fit:cover;position:absolute;inset:0;}
.split-media .media-ov{
  position:absolute;inset:0;
  background:linear-gradient(180deg,rgba(7,11,20,.1),rgba(7,11,20,.68));
}
.split-media .media-txt{
  position:absolute;left:28px;right:28px;bottom:26px;
  font-size:14px;color:#D7E2F5;line-height:1.8;
}
.split-body{display:flex;flex-direction:column;gap:16px;}
.mini-list{display:flex;flex-direction:column;}
.mini-item{
  padding:18px 0;
  border-bottom:1px solid var(--line);
  display:flex;gap:14px;align-items:flex-start;
}
.mini-item:first-child{padding-top:0;}
.mini-item:last-child{border-bottom:0;padding-bottom:0;}
.mini-item .idx{
  font-size:12.5px;
  color:var(--amber);
  min-width:26px;
  padding-top:2px;
  font-variant-numeric:tabular-nums;
}
.mini-item h3{font-size:16.5px;margin-bottom:6px;}
.mini-item p{font-size:14px;color:var(--text-2);}

/* ---------- stat strip ---------- */
.stat-strip{
  display:grid;
  grid-template-columns:repeat(3,1fr);
  gap:1px;
  background:var(--line);
  border:1px solid var(--glass-line);
  border-radius:var(--r-card);
  overflow:hidden;
}
.stat-cell{
  background:var(--bg-1);
  padding:30px 28px;
}
.stat-cell .v{
  font-size:32px;
  font-weight:800;
  letter-spacing:-.02em;
  font-variant-numeric:tabular-nums;
  color:var(--text-1);
}
.stat-cell .v i{font-style:normal;color:var(--amber);}
.stat-cell .k{margin-top:8px;font-size:14px;color:var(--text-2);}
.stat-cell .s{margin-top:6px;font-size:13px;color:var(--text-3);}

/* ---------- 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;
  display:flex;align-items:center;justify-content:space-between;gap:20px;
  padding:22px 4px;
  font-size:17px;
  font-weight:600;
  color:var(--text-1);
  transition:var(--ease);
}
.faq-item summary::-webkit-details-marker{display:none;}
.faq-item summary:hover{color:var(--cyan);}
.faq-item summary .plus{
  position:relative;
  width:18px;height:18px;flex:none;
  transition:var(--ease);
}
.faq-item summary .plus::before,
.faq-item summary .plus::after{
  content:"";position:absolute;background:var(--text-2);border-radius:1px;transition:var(--ease);
}
.faq-item summary .plus::before{left:0;top:8px;width:18px;height:1.5px;}
.faq-item summary .plus::after{top:0;left:8px;width:1.5px;height:18px;}
.faq-item[open] summary .plus{transform:rotate(45deg);}
.faq-item[open] summary .plus::before,
.faq-item[open] summary .plus::after{background:var(--cyan);}
.faq-answer{
  padding:0 4px 24px;
  font-size:15px;
  line-height:1.85;
  color:var(--text-2);
  max-width:820px;
}

/* ---------- cta ---------- */
.cta-band{
  margin-top:96px;
  margin-bottom:96px;
  border-radius:var(--r-card);
  border:1px solid var(--glass-line);
  background:
    radial-gradient(520px 260px at 88% 20%, rgba(47,123,255,.20), transparent 70%),
    var(--glass);
  backdrop-filter:blur(14px);
  -webkit-backdrop-filter:blur(14px);
  padding:44px 40px;
  display:flex;
  align-items:center;
  justify-content:space-between;
  gap:32px;
  position:relative;
  overflow:hidden;
}
.cta-band::before{
  content:"";
  position:absolute;left:0;top:0;bottom:0;width:3px;
  background:linear-gradient(180deg,var(--cyan),var(--primary));
}
.cta-band h2{font-size:28px;margin-bottom:10px;}
.cta-band p{font-size:15px;color:var(--text-2);max-width:600px;}
.cta-actions{display:flex;gap:14px;flex-wrap:wrap;flex:none;}

/* ---------- related ---------- */
.related{
  padding:56px 0 0;
  border-top:1px solid var(--line);
}
.related-row{
  display:flex;flex-wrap:wrap;gap:14px 34px;
  align-items:center;
}
.rel-link{
  display:inline-flex;align-items:center;gap:8px;
  font-size:15px;
  color:var(--text-2);
  padding:10px 0;
}
.rel-link svg{width:15px;height:15px;fill:none;stroke:currentColor;stroke-width:1.6;stroke-linecap:round;stroke-linejoin:round;transition:var(--ease);}
.rel-link:hover{color:var(--cyan);}
.rel-link:hover svg{transform:translateX(4px);}

/* ---------- footer ---------- */
.site-footer{
  position:relative;
  z-index:1;
  margin-top:0;
  background:#050810;
  border-top:1px solid var(--line);
  padding:72px 0 0;
}
.foot-grid{
  display:grid;
  grid-template-columns:1.4fr 1fr 1fr 1.2fr;
}
.foot-col{
  padding:0 28px;
  border-left:1px solid var(--line);
}
.foot-col:first-child{border-left:0;padding-left:0;}
.foot-col:last-child{padding-right:0;}
.foot-brand{
  display:inline-flex;align-items:center;gap:9px;
  font-size:16px;font-weight:800;
  margin-bottom:14px;
}
.foot-brand .dot{width:4px;height:4px;border-radius:50%;background:var(--cyan);box-shadow:0 0 10px rgba(39,224,208,.9);}
.foot-col p{font-size:14px;color:var(--text-3);line-height:1.8;}
.foot-title{font-size:14px;font-weight:700;color:var(--text-1);margin-bottom:16px;}
.foot-links{display:flex;flex-direction:column;gap:12px;}
.foot-links a{font-size:14px;color:var(--text-3);}
.foot-links a:hover{color:var(--cyan);}
.foot-bottom{
  margin-top:56px;
  padding:22px 0;
  border-top:1px solid var(--line);
  text-align:center;
  font-size:13px;
  color:var(--text-3);
}

/* ---------- responsive ---------- */
@media (max-width:1200px){
  .wrap{padding:0 32px;}
  .nav-links{gap:24px;}
  .nav-links a{font-size:14px;}
  .pagehead h1{font-size:46px;}
  .device-grid{grid-template-columns:repeat(2,1fr);}
}
@media (max-width:1024px){
  .nav-links{display:none;}
  .btn-mini{display:none;}
  .burger{display:inline-flex;}
  .split{grid-template-columns:1fr;}
  .split-media{min-height:280px;}
  .flow{grid-template-columns:repeat(2,1fr);gap:32px 24px;}
  .flow-step:nth-child(2) .node-line{display:none;}
  .wide-banner{height:320px;}
  .foot-grid{grid-template-columns:1fr 1fr;gap:40px 0;}
  .foot-col:nth-child(3){border-left:0;padding-left:0;}
}
@media (max-width:768px){
  body{font-size:16px;}
  .wrap{padding:0 20px;}
  main{padding-top:64px;}
  .site-header{height:64px;}
  .section{padding:64px 0;}
  .section-sm{padding:48px 0;}
  .sec-title{font-size:26px;}
  .sec-head{flex-direction:column;align-items:flex-start;gap:14px;margin-bottom:32px;}
  .pagehead h1{font-size:32px;}
  .pagehead-inner{padding:18px 0 32px;}
  .wide-banner{height:230px;border-radius:var(--r-sm);}
  .wide-banner .banner-cap{left:20px;right:20px;bottom:18px;}
  .flow{grid-template-columns:1fr;gap:0;}
  .flow-step{padding-top:0;padding-left:46px;padding-bottom:32px;}
  .flow-step .node-line{display:none;}
  .flow-step:not(:last-child)::after{
    content:"";
    position:absolute;
    left:8px;top:26px;bottom:6px;
    width:1px;
    background:linear-gradient(180deg,rgba(255,179,92,.5),rgba(255,255,255,.06));
  }
  .flow-step .node{top:2px;left:0;}
  .device-grid{grid-template-columns:1fr;}
  .stat-strip{grid-template-columns:1fr;}
  .cta-band{flex-direction:column;align-items:flex-start;padding:32px 24px;margin-top:64px;margin-bottom:64px;}
  .cta-band h2{font-size:23px;}
  .cta-actions{width:100%;}
  .cta-actions .btn{flex:1;min-width:150px;}
  .faq-item summary{font-size:16px;padding:20px 2px;}
  .foot-grid{grid-template-columns:1fr;gap:0;}
  .foot-col{border-left:0;padding:0;padding-bottom:32px;margin-bottom:32px;border-bottom:1px solid var(--line);}
  .foot-col:last-child{border-bottom:0;padding-bottom:0;margin-bottom:0;}
  .site-footer{padding-top:56px;}
  .glass{padding:22px;}
  .related-row{gap:10px 24px;}
}
@media (max-width:480px){
  .pagehead h1{font-size:28px;}
  .cta-actions{flex-direction:column;}
  .cta-actions .btn{width:100%;}
  .btn{padding:0 20px;}
}

/* roulang page: category2 */
:root{
  --bg-base:#070B14;
  --bg-1:#0C1220;
  --bg-2:#111A2B;
  --glass:rgba(255,255,255,0.055);
  --glass-2:rgba(255,255,255,0.09);
  --glass-line:rgba(255,255,255,0.12);
  --primary:#2F7BFF;
  --primary-600:#1B5FE0;
  --primary-soft:rgba(47,123,255,0.16);
  --cyan:#27E0D0;
  --amber:#FFB35C;
  --text-1:#F2F6FF;
  --text-2:#A9B6CC;
  --text-3:#6E7C93;
  --line:rgba(255,255,255,0.10);
  --line-strong:rgba(255,255,255,0.18);
  --r-card:18px;
  --r-sm:14px;
  --r-btn:10px;
  --r-img:14px;
  --shadow-1:0 8px 24px rgba(0,0,0,.35);
  --shadow-glow:0 0 0 1px rgba(47,123,255,.35), 0 10px 30px rgba(47,123,255,.28);
  --ease:all .22s cubic-bezier(.2,.7,.3,1);
}
*,*::before,*::after{box-sizing:border-box}
html{-webkit-text-size-adjust:100%;scroll-behavior:smooth}
body{
  margin:0;
  background:var(--bg-base);
  color:var(--text-1);
  font-family:"HarmonyOS Sans SC","Source Han Sans SC","Noto Sans SC","PingFang SC","Microsoft YaHei",system-ui,-apple-system,"Segoe UI",sans-serif;
  font-size:16.5px;
  line-height:1.75;
  letter-spacing:0;
  -webkit-font-smoothing:antialiased;
  overflow-x:hidden;
}
body::before{
  content:"";position:fixed;inset:0;z-index:-2;pointer-events:none;
  background:
    radial-gradient(760px 520px at 8% 4%, rgba(39,224,208,.10), transparent 62%),
    radial-gradient(720px 560px at 94% 90%, rgba(255,179,92,.075), transparent 62%),
    linear-gradient(180deg,#070B14 0%,#05080F 55%,#070B14 100%);
}
body::after{
  content:"";position:fixed;inset:0;z-index:-1;pointer-events:none;opacity:.03;
  background-image:
    linear-gradient(rgba(255,255,255,.7) 1px, transparent 1px),
    linear-gradient(90deg, rgba(255,255,255,.7) 1px, transparent 1px);
  background-size:64px 64px;
}
img{max-width:100%;display:block;border-style:none}
a{color:inherit;text-decoration:none}
button{font:inherit;color:inherit;background:none;border:0;cursor:pointer}
input{font:inherit}
h1,h2,h3,h4{margin:0;font-weight:700;letter-spacing:-.01em;line-height:1.25}
p{margin:0}
ul{margin:0;padding:0;list-style:none}
svg{display:block}
.num,.tabular{font-variant-numeric:tabular-nums;font-feature-settings:"tnum"}
::selection{background:rgba(47,123,255,.35);color:#fff}

/* ---------- 容器 ---------- */
.wrap{width:100%;margin:0 auto;padding:0 40px}
@media (min-width:1440px){.wrap{max-width:1280px}}
@media (max-width:768px){.wrap{padding:0 20px}}

/* ---------- 顶栏 ---------- */
.site-header{
  position:fixed;top:0;left:0;right:0;z-index:60;
  height:76px;display:flex;align-items:center;
  background:linear-gradient(180deg, rgba(7,11,20,.72), rgba(7,11,20,0));
  transition:height .22s cubic-bezier(.2,.7,.3,1), background .22s, border-color .22s, backdrop-filter .22s;
  border-bottom:1px solid transparent;
}
.site-header.scrolled,.site-header.menu-open{
  height:64px;
  background:rgba(7,11,20,.78);
  backdrop-filter:blur(16px);
  -webkit-backdrop-filter:blur(16px);
  border-bottom:1px solid var(--line);
}
.nav-inner{display:flex;align-items:center;gap:28px;width:100%}
.logo{
  position:relative;z-index:3;
  display:inline-flex;align-items:center;gap:10px;
  font-size:17px;font-weight:700;letter-spacing:-.01em;color:var(--text-1);
  white-space:nowrap;
}
.logo .dot{
  width:6px;height:6px;border-radius:50%;background:var(--cyan);
  box-shadow:0 0 10px rgba(39,224,208,.9);flex:0 0 6px;
}
.nav-links{
  display:flex;align-items:center;justify-content:center;gap:36px;
  flex:1;min-width:0;
}
.nav-links > a{
  position:relative;font-size:14.5px;letter-spacing:.02em;color:var(--text-2);
  padding:10px 0;white-space:nowrap;transition:var(--ease);
}
.nav-links > a::after{
  content:"";position:absolute;left:0;right:0;bottom:2px;height:2px;border-radius:2px;
  background:var(--primary);opacity:0;transform:scaleX(.6);
  transition:var(--ease);
}
.nav-links > a:hover{color:var(--text-1)}
.nav-links > a:hover::after{opacity:.45;transform:scaleX(1)}
.nav-links > a.is-active{color:var(--text-1)}
.nav-links > a.is-active::after{
  opacity:1;transform:scaleX(1);
  box-shadow:0 0 14px rgba(47,123,255,.85);
}
.nav-right{display:flex;align-items:center;gap:12px;position:relative;z-index:3;margin-left:auto}
.btn-mini{
  display:inline-flex;align-items:center;justify-content:center;
  height:38px;padding:0 18px;border-radius:999px;font-size:14px;font-weight:600;
  background:var(--glass);border:1px solid var(--glass-line);color:var(--text-1);
  backdrop-filter:blur(12px);-webkit-backdrop-filter:blur(12px);transition:var(--ease);
}
.btn-mini:hover{background:var(--glass-2);border-color:rgba(255,255,255,.24)}
.btn-mini:active{transform:scale(.98)}
.icon-btn{
  width:44px;height:44px;border-radius:12px;display:inline-flex;align-items:center;justify-content:center;
  color:var(--text-2);transition:var(--ease);
}
.icon-btn:hover{color:var(--text-1);background:var(--glass)}
.icon-btn svg{width:20px;height:20px;fill:none;stroke:currentColor;stroke-width:1.5;stroke-linecap:round;stroke-linejoin:round}
.burger{display:none;flex-direction:column;justify-content:center;align-items:center;gap:6px}
.burger span{display:block;width:20px;height:1.5px;background:currentColor;border-radius:2px;transition:var(--ease)}
.site-header.menu-open .burger span:first-child{transform:translateY(3.75px) rotate(45deg)}
.site-header.menu-open .burger span:last-child{transform:translateY(-3.75px) rotate(-45deg)}
.drawer-foot{display:none}
a:focus-visible,button:focus-visible{outline:2px solid var(--primary);outline-offset:3px;border-radius:8px}

/* ---------- 页面头 ---------- */
.page-hero{padding:132px 0 8px;position:relative}
.crumbs{display:flex;align-items:center;gap:10px;font-size:13px;color:var(--text-3);flex-wrap:wrap}
.crumbs a{color:var(--text-2);transition:var(--ease)}
.crumbs a:hover{color:var(--cyan)}
.crumbs .sep{color:var(--text-3);opacity:.6}
.crumbs .cur{color:var(--text-2)}
.hero-split{
  display:grid;grid-template-columns:minmax(0,1fr) 340px;
  gap:48px;align-items:end;margin-top:26px;
}
.eyebrow{
  display:inline-flex;align-items:center;gap:8px;
  height:28px;padding:0 12px;border-radius:999px;
  font-size:12.5px;letter-spacing:.06em;color:var(--cyan);
  background:rgba(39,224,208,.07);border:1px solid rgba(39,224,208,.28);
}
.page-hero h1{
  font-size:54px;line-height:1.16;font-weight:800;letter-spacing:-.015em;
  margin:20px 0 18px;max-width:16em;
}
.page-hero h1 em{font-style:normal;color:var(--cyan)}
.lead{font-size:16.5px;color:var(--text-2);max-width:44em;line-height:1.85}
.hero-actions{display:flex;align-items:center;gap:16px;margin-top:30px;flex-wrap:wrap}
.hero-figure{
  position:relative;margin:0;border-radius:var(--r-img);overflow:hidden;
  border:1px solid var(--glass-line);box-shadow:var(--shadow-1);
  height:236px;
}
.hero-figure img{width:100%;height:100%;object-fit:cover}
.hero-figure::after{
  content:"";position:absolute;inset:0;
  background:linear-gradient(180deg, rgba(7,11,20,.05), rgba(7,11,20,.55));
}
.hero-figure figcaption{
  position:absolute;left:14px;right:14px;bottom:12px;z-index:2;
  font-size:12.5px;color:var(--text-2);letter-spacing:.02em;
}

/* ---------- 按钮 ---------- */
.btn{
  display:inline-flex;align-items:center;justify-content:center;gap:10px;
  min-height:48px;padding:0 28px;border-radius:999px;
  font-size:15px;font-weight:600;letter-spacing:.01em;
  transition:var(--ease);white-space:nowrap;
}
.btn svg{width:17px;height:17px;fill:none;stroke:currentColor;stroke-width:1.8;stroke-linecap:round;stroke-linejoin:round;transition:var(--ease)}
.btn-primary{
  color:#fff;background:linear-gradient(180deg,var(--primary),var(--primary-600));
  box-shadow:inset 0 1px 0 rgba(255,255,255,.24), 0 10px 26px rgba(47,123,255,.28);
}
.btn-primary:hover{
  filter:brightness(1.08);
  box-shadow:inset 0 1px 0 rgba(255,255,255,.28), 0 0 0 1px rgba(47,123,255,.4), 0 16px 36px rgba(47,123,255,.42);
}
.btn-ghost{
  color:var(--text-1);background:var(--glass);border:1px solid var(--glass-line);
  backdrop-filter:blur(12px);-webkit-backdrop-filter:blur(12px);
}
.btn-ghost:hover{background:var(--glass-2);border-color:rgba(255,255,255,.26)}
.btn:active{transform:scale(.98)}
.btn:hover svg{transform:translateX(3px)}
.text-link{
  display:inline-flex;align-items:center;gap:8px;font-size:14.5px;color:var(--cyan);
  transition:var(--ease);
}
.text-link svg{width:16px;height:16px;fill:none;stroke:currentColor;stroke-width:1.8;stroke-linecap:round;stroke-linejoin:round}
.text-link:hover{gap:12px;color:#7FF3E6}

/* ---------- 板块 ---------- */
.section{padding:96px 0}
.section.tight{padding:72px 0}
.sec-head{max-width:760px;margin-bottom:44px}
.sec-top{display:flex;align-items:flex-end;justify-content:space-between;gap:24px;flex-wrap:wrap}
.sec-num{
  display:inline-flex;align-items:center;gap:10px;
  font-size:13px;letter-spacing:.16em;color:var(--amber);
  font-variant-numeric:tabular-nums;margin-bottom:14px;
}
.sec-num::before{content:"";width:26px;height:2px;border-radius:2px;background:var(--amber);opacity:.85}
.sec-head h2{font-size:34px;font-weight:800;letter-spacing:-.012em}
.sec-head p{margin-top:14px;color:var(--text-2);font-size:15.5px;line-height:1.85}
.hairline{height:1px;background:var(--line);border:0;margin:0}

/* ---------- 索引网格 ---------- */
.index-grid{display:grid;grid-template-columns:repeat(12,1fr);gap:24px}
.span-4{grid-column:span 4}
.span-6{grid-column:span 6}
.span-8{grid-column:span 8}
.idx-card{
  grid-column:span 12;
  position:relative;display:flex;flex-direction:column;gap:18px;
  padding:28px;border-radius:var(--r-card);
  background:var(--glass);border:1px solid var(--glass-line);
  backdrop-filter:blur(14px);-webkit-backdrop-filter:blur(14px);
  box-shadow:var(--shadow-1);transition:var(--ease);overflow:hidden;
}
.idx-card:hover{
  transform:translateY(-4px);
  border-color:rgba(255,255,255,.19);
  box-shadow:0 0 0 1px rgba(47,123,255,.28), 0 14px 34px rgba(47,123,255,.20);
}
.idx-card.span-4,.idx-card.span-6,.idx-card.span-8{grid-column:span 12}
@media (min-width:900px){
  .idx-card.span-4{grid-column:span 4}
  .idx-card.span-6{grid-column:span 6}
  .idx-card.span-8{grid-column:span 8}
}
.idx-card.feature{flex-direction:row;align-items:stretch;gap:26px}
.idx-media{
  flex:0 0 210px;border-radius:var(--r-sm);overflow:hidden;position:relative;
  border:1px solid var(--glass-line);min-height:180px;
}
.idx-media img{width:100%;height:100%;object-fit:cover;transition:transform .4s cubic-bezier(.2,.7,.3,1)}
.idx-card:hover .idx-media img{transform:scale(1.05)}
.idx-body{display:flex;flex-direction:column;gap:12px;min-width:0;flex:1}
.idx-top{display:flex;align-items:center;gap:10px;flex-wrap:wrap}
.corner{
  font-size:12.5px;font-weight:700;letter-spacing:.06em;color:var(--amber);
  font-variant-numeric:tabular-nums;
  padding:2px 9px;border-radius:999px;border:1px solid rgba(255,179,92,.34);
  background:rgba(255,179,92,.07);
}
.heat{
  font-size:12.5px;letter-spacing:.02em;color:var(--cyan);
  padding:2px 10px;border-radius:999px;
  border:1px solid rgba(39,224,208,.30);background:rgba(39,224,208,.07);
}
.heat.amber{color:var(--amber);border-color:rgba(255,179,92,.34);background:rgba(255,179,92,.07)}
.idx-card h3{font-size:21px;font-weight:700;letter-spacing:-.01em}
.idx-card h3 a{transition:var(--ease)}
.idx-card h3 a:hover{color:var(--cyan)}
.idx-card p{font-size:14.5px;color:var(--text-2);line-height:1.8}
.idx-link{
  margin-top:auto;display:inline-flex;align-items:center;gap:8px;
  font-size:14px;color:var(--text-2);transition:var(--ease);
}
.idx-link svg{width:16px;height:16px;fill:none;stroke:currentColor;stroke-width:1.8;stroke-linecap:round;stroke-linejoin:round;transition:var(--ease)}
.idx-card:hover .idx-link{color:var(--cyan)}
.idx-card:hover .idx-link svg{transform:translateX(4px)}

/* ---------- 数据横滑 ---------- */
.slider-wrap{position:relative}
.slider-wrap::before,.slider-wrap::after{
  content:"";position:absolute;top:0;bottom:18px;width:70px;z-index:2;pointer-events:none;
}
.slider-wrap::before{left:-2px;background:linear-gradient(90deg,var(--bg-base),rgba(7,11,20,0));}
.slider-wrap::after{right:-2px;background:linear-gradient(270deg,var(--bg-base),rgba(7,11,20,0));}
.slider{
  display:flex;gap:18px;overflow-x:auto;padding:4px 0 18px;
  scroll-snap-type:x mandatory;-webkit-overflow-scrolling:touch;scrollbar-width:none;
}
.slider::-webkit-scrollbar{display:none}
.slide{
  flex:0 0 306px;scroll-snap-align:start;
  padding:24px;border-radius:var(--r-card);
  background:var(--glass);border:1px solid var(--glass-line);
  backdrop-filter:blur(14px);-webkit-backdrop-filter:blur(14px);
  transition:var(--ease);
}
.slide:hover{border-color:rgba(255,255,255,.19);background:var(--glass-2)}
.slide .metric{
  font-size:34px;font-weight:800;letter-spacing:-.02em;color:var(--text-1);
  font-variant-numeric:tabular-nums;display:flex;align-items:baseline;gap:6px;
}
.slide .metric small{font-size:14px;font-weight:600;color:var(--amber);letter-spacing:.02em}
.slide h3{font-size:16.5px;margin-top:14px;font-weight:700}
.slide p{font-size:14px;color:var(--text-2);margin-top:8px;line-height:1.75}

/* ---------- 场景分栏 ---------- */
.split{display:grid;grid-template-columns:repeat(12,1fr);gap:24px}
.col-4{grid-column:span 12}
.col-8{grid-column:span 12}
@media (min-width:900px){
  .col-4{grid-column:span 4}
  .col-8{grid-column:span 8}
}
.side-note{
  position:relative;padding:26px;border-radius:var(--r-card);
  background:linear-gradient(180deg,rgba(47,123,255,.09),rgba(255,255,255,.03));
  border:1px solid var(--glass-line);height:fit-content;
}
.side-note h3{font-size:18px;margin-bottom:12px}
.side-note p{font-size:14.5px;color:var(--text-2);line-height:1.85}
.side-note .pill-row{display:flex;flex-wrap:wrap;gap:8px;margin-top:18px}
.pill{
  font-size:12.5px;color:var(--text-2);padding:4px 11px;border-radius:999px;
  border:1px solid var(--line-strong);background:rgba(255,255,255,.04);
}
.scene-list{border-top:1px solid var(--line)}
.scene{
  display:grid;grid-template-columns:56px minmax(0,1fr);gap:18px;
  padding:26px 0;border-bottom:1px solid var(--line);transition:var(--ease);
}
.scene:hover{background:linear-gradient(90deg,rgba(255,255,255,.035),rgba(255,255,255,0))}
.scene .s-num{
  font-size:15px;font-weight:700;color:var(--amber);font-variant-numeric:tabular-nums;
  letter-spacing:.06em;padding-top:2px;
}
.scene h3{font-size:18px;margin-bottom:6px}
.scene p{font-size:14.5px;color:var(--text-2);line-height:1.8}

/* ---------- 步骤 ---------- */
.steps{display:grid;grid-template-columns:repeat(4,1fr);gap:24px;position:relative;margin-top:12px}
.steps::before{
  content:"";position:absolute;top:22px;left:8%;right:8%;height:1px;
  background:linear-gradient(90deg,rgba(255,255,255,.04),var(--line-strong),var(--line-strong),rgba(255,255,255,.04));
}
.step{position:relative;z-index:1}
.step .dot-num{
  width:44px;height:44px;border-radius:50%;display:grid;place-items:center;
  background:var(--bg-1);border:1px solid var(--line-strong);
  color:var(--amber);font-weight:700;font-size:15px;font-variant-numeric:tabular-nums;
  box-shadow:0 0 0 6px rgba(7,11,20,.9);
}
.step h3{font-size:17px;margin:18px 0 8px}
.step p{font-size:14px;color:var(--text-2);line-height:1.8}

/* ---------- FAQ ---------- */
.faq{border-top:1px solid var(--line);margin-top:8px}
.faq-item{border-bottom:1px solid var(--line)}
.faq-q{
  width:100%;display:flex;align-items:center;justify-content:space-between;gap:18px;
  padding:24px 0;text-align:left;font-size:17px;font-weight:600;color:var(--text-1);
  transition:var(--ease);min-height:44px;
}
.faq-q:hover{color:var(--cyan)}
.faq-icon{position:relative;width:20px;height:20px;flex:0 0 20px;transition:transform .22s cubic-bezier(.2,.7,.3,1)}
.faq-icon::before,.faq-icon::after{content:"";position:absolute;background:var(--text-2);border-radius:2px;transition:var(--ease)}
.faq-icon::before{left:0;top:9px;width:20px;height:2px}
.faq-icon::after{left:9px;top:0;width:2px;height:20px}
.faq-item.open .faq-icon{transform:rotate(45deg)}
.faq-item.open .faq-icon::before,.faq-item.open .faq-icon::after{background:var(--cyan)}
.faq-a{max-height:0;overflow:hidden;opacity:0;transition:max-height .22s cubic-bezier(.2,.7,.3,1),opacity .22s}
.faq-item.open .faq-a{opacity:1}
.faq-a p{padding:0 44px 24px 0;font-size:15px;line-height:1.85;color:var(--text-2)}

/* ---------- CTA ---------- */
.cta-band{
  position:relative;overflow:hidden;border-radius:22px;
  padding:52px 48px;display:grid;grid-template-columns:minmax(0,1fr) auto;
  gap:32px;align-items:center;
  background:linear-gradient(120deg,rgba(47,123,255,.16),rgba(255,255,255,.04) 55%,rgba(39,224,208,.10));
  border:1px solid var(--glass-line);
  backdrop-filter:blur(14px);-webkit-backdrop-filter:blur(14px);
  box-shadow:var(--shadow-1);
}
.cta-band::after{
  content:"";position:absolute;right:-90px;top:-90px;width:300px;height:300px;border-radius:50%;
  background:radial-gradient(circle,rgba(255,179,92,.20),transparent 68%);
  pointer-events:none;
}
.cta-band h2{font-size:30px;font-weight:800;letter-spacing:-.012em;margin-bottom:12px}
.cta-band p{font-size:15px;color:var(--text-2);max-width:46em;line-height:1.85}
.cta-actions{display:flex;gap:14px;flex-wrap:wrap}

/* ---------- 相关入口 ---------- */
.link-row{
  display:flex;align-items:center;justify-content:space-between;gap:20px;flex-wrap:wrap;
  padding:26px 0 0;border-top:1px solid var(--line);margin-top:40px;
}
.link-row .links{display:flex;gap:26px;flex-wrap:wrap}

/* ---------- 浮动操作条 ---------- */
.float-bar{
  position:fixed;right:24px;top:50%;transform:translateY(-50%);z-index:50;
  display:flex;flex-direction:column;gap:8px;padding:10px;border-radius:16px;
  background:rgba(12,18,32,.74);border:1px solid var(--glass-line);
  backdrop-filter:blur(14px);-webkit-backdrop-filter:blur(14px);box-shadow:var(--shadow-1);
}
.float-bar a{
  writing-mode:vertical-rl;letter-spacing:.14em;font-size:13px;color:var(--text-2);
  padding:14px 9px;border-radius:10px;transition:var(--ease);
}
.float-bar a:hover{color:var(--text-1);background:var(--glass-2)}
@media (max-width:1200px){.float-bar{display:none}}

/* ---------- 页脚 ---------- */
.site-footer{
  margin-top:96px;background:#05080F;border-top:1px solid var(--line);
  padding:72px 0 0;
}
.foot-grid{display:grid;grid-template-columns:repeat(4,1fr)}
.foot-col{padding:0 28px;border-left:1px solid var(--line)}
.foot-col:first-child{padding-left:0;border-left:0}
.foot-col:last-child{padding-right:0}
.foot-brand{
  display:inline-flex;align-items:center;gap:10px;font-size:17px;font-weight:700;
  color:var(--text-1);margin-bottom:16px;
}
.foot-brand .dot{width:6px;height:6px;border-radius:50%;background:var(--cyan);box-shadow:0 0 10px rgba(39,224,208,.9)}
.foot-col p{font-size:14px;color:var(--text-3);line-height:1.85;max-width:30em}
.foot-title{font-size:14px;font-weight:700;color:var(--text-1);margin-bottom:16px;letter-spacing:.02em}
.foot-links{display:flex;flex-direction:column;gap:12px}
.foot-links a{font-size:14px;color:var(--text-2);transition:var(--ease);width:fit-content}
.foot-links a:hover{color:var(--cyan)}
.foot-bottom{
  margin-top:64px;padding:22px 0;border-top:1px solid var(--line);
  text-align:center;font-size:13px;color:var(--text-3);
}

/* ---------- 入场动画 ---------- */
.reveal{opacity:0;transform:translateY(14px)}
.reveal.in{opacity:1;transform:none;transition:opacity .5s ease, transform .5s cubic-bezier(.2,.7,.3,1)}
@media (prefers-reduced-motion:reduce){
  .reveal{opacity:1;transform:none}
  *{animation:none!important;transition:none!important}
}

/* ---------- 响应式 ---------- */
@media (max-width:1024px){
  .page-hero{padding-top:118px}
  .page-hero h1{font-size:40px}
  .hero-split{grid-template-columns:1fr;gap:32px;align-items:start}
  .hero-figure{height:200px}
  .nav-links{
    position:fixed;top:0;left:0;right:0;bottom:0;z-index:2;
    flex-direction:column;align-items:stretch;justify-content:flex-start;
    gap:0;padding:104px 24px 32px;overflow-y:auto;
    background:rgba(6,10,18,.97);
    backdrop-filter:blur(18px);-webkit-backdrop-filter:blur(18px);
    opacity:0;transform:translateY(-10px);pointer-events:none;
    transition:opacity .22s cubic-bezier(.2,.7,.3,1), transform .22s cubic-bezier(.2,.7,.3,1);
  }
  .site-header.menu-open .nav-links{opacity:1;transform:none;pointer-events:auto}
  .nav-links > a{
    font-size:20px;color:var(--text-1);padding:18px 0;border-bottom:1px solid var(--line);
  }
  .nav-links > a::after{display:none}
  .nav-links > a.is-active{color:var(--cyan)}
  .burger{display:inline-flex}
  .drawer-foot{
    display:flex;flex-direction:column;gap:16px;margin-top:auto;padding-top:28px;
    border-top:1px solid var(--line);
  }
  .drawer-foot .df-brand{display:inline-flex;align-items:center;gap:9px;font-size:15px;font-weight:700;color:var(--text-1)}
  .drawer-foot .df-brand .dot{width:6px;height:6px;border-radius:50%;background:var(--cyan);box-shadow:0 0 10px rgba(39,224,208,.9)}
  .drawer-foot .df-tip{font-size:13px;color:var(--text-3)}
  .section{padding:64px 0}
  .section.tight{padding:56px 0}
  .sec-head h2{font-size:26px}
  .page-hero h1{font-size:36px}
  .idx-card.feature{flex-direction:column}
  .idx-media{flex:0 0 auto;min-height:170px;height:180px}
  .steps{grid-template-columns:1fr;gap:28px}
  .steps::before{top:0;bottom:0;left:21px;right:auto;width:1px;height:auto;
    background:linear-gradient(180deg,rgba(255,255,255,.04),var(--line-strong),rgba(255,255,255,.04));}
  .step{padding-left:0}
  .cta-band{grid-template-columns:1fr;padding:36px 26px}
  .cta-band h2{font-size:24px}
  .foot-grid{grid-template-columns:1fr 1fr;gap:36px 0}
  .foot-col{padding:0 20px}
  .foot-col:nth-child(odd){padding-left:0;border-left:0}
  .foot-col:nth-child(even){padding-right:0}
}
@media (max-width:768px){
  .btn-mini{display:none}
  .search-btn{display:none}
  .page-hero h1{font-size:32px}
  .lead{font-size:15.5px}
  .idx-card{padding:22px}
  .slide{flex:0 0 258px;padding:20px}
  .foot-grid{grid-template-columns:1fr;gap:32px}
  .foot-col{padding:0;border-left:0;border-top:1px solid var(--line);padding-top:26px}
  .foot-col:first-child{border-top:0;padding-top:0}
  .link-row{flex-direction:column;align-items:flex-start}
}
@media (max-width:520px){
  .page-hero h1{font-size:28px}
  .hero-actions{flex-direction:column;align-items:stretch}
  .hero-actions .btn{width:100%}
  .scene{grid-template-columns:44px minmax(0,1fr);gap:14px}
  .faq-q{font-size:16px}
  .faq-a p{padding-right:0}
}

/* roulang page: category4 */
:root{
  --bg-base:#070B14;
  --bg-1:#0C1220;
  --bg-2:#111A2B;
  --glass:rgba(255,255,255,.055);
  --glass-2:rgba(255,255,255,.09);
  --glass-line:rgba(255,255,255,.12);
  --primary:#2F7BFF;
  --primary-600:#1B5FE0;
  --primary-soft:rgba(47,123,255,.16);
  --cyan:#27E0D0;
  --amber:#FFB35C;
  --text-1:#F2F6FF;
  --text-2:#A9B6CC;
  --text-3:#6E7C93;
  --line:rgba(255,255,255,.10);
  --line-strong:rgba(255,255,255,.18);
  --r-card:18px;
  --r-sm:14px;
  --r-btn:10px;
  --r-img:14px;
  --shadow-1:0 8px 24px rgba(0,0,0,.35);
  --shadow-glow:0 0 0 1px rgba(47,123,255,.35), 0 10px 30px rgba(47,123,255,.28);
  --ease:all .22s cubic-bezier(.2,.7,.3,1);
}
*,*::before,*::after{box-sizing:border-box;}
html{-webkit-text-size-adjust:100%;scroll-behavior:smooth;}
body{
  margin:0;
  background:var(--bg-base);
  color:var(--text-1);
  font-family:"HarmonyOS Sans SC","Source Han Sans SC","Noto Sans SC","PingFang SC","Microsoft YaHei",system-ui,-apple-system,sans-serif;
  font-size:16.5px;
  line-height:1.75;
  letter-spacing:0;
  -webkit-font-smoothing:antialiased;
  overflow-x:hidden;
}
body::before{
  content:"";
  position:fixed;
  inset:0;
  pointer-events:none;
  z-index:0;
  background:
    radial-gradient(680px 420px at 6% 4%, rgba(39,224,208,.075), transparent 70%),
    radial-gradient(720px 480px at 96% 96%, rgba(255,179,92,.055), transparent 72%);
}
body::after{
  content:"";
  position:fixed;
  inset:0;
  pointer-events:none;
  z-index:0;
  opacity:.03;
  background-image:linear-gradient(rgba(255,255,255,.6) 1px, transparent 1px),
                   linear-gradient(90deg, rgba(255,255,255,.6) 1px, transparent 1px);
  background-size:64px 64px;
}
h1,h2,h3,h4{margin:0;font-weight:700;letter-spacing:-.01em;line-height:1.28;}
p{margin:0;}
a{color:inherit;text-decoration:none;}
img{max-width:100%;display:block;}
button{font:inherit;color:inherit;background:none;border:0;cursor:pointer;}
ul,ol{margin:0;padding:0;list-style:none;}
:focus-visible{outline:2px solid var(--primary);outline-offset:3px;border-radius:6px;}
::selection{background:rgba(47,123,255,.35);color:#fff;}

.wrap{
  width:100%;
  max-width:1280px;
  margin:0 auto;
  padding:0 40px;
  position:relative;
  z-index:2;
}

/* ============ 导航 ============ */
.site-header{
  position:sticky;
  top:0;
  z-index:60;
  background:rgba(7,11,20,.55);
  border-bottom:1px solid transparent;
  transition:var(--ease);
}
.site-header.scrolled{
  background:rgba(7,11,20,.82);
  backdrop-filter:blur(14px);
  -webkit-backdrop-filter:blur(14px);
  border-bottom-color:var(--line);
}
.nav-inner{
  display:flex;
  align-items:center;
  justify-content:space-between;
  gap:28px;
  height:76px;
  transition:var(--ease);
}
.site-header.scrolled .nav-inner{height:64px;}
.logo{
  display:inline-flex;
  align-items:center;
  gap:10px;
  font-size:17px;
  font-weight:700;
  letter-spacing:-.01em;
  white-space:nowrap;
}
.logo .dot,.foot-brand .dot{
  width:6px;height:6px;border-radius:50%;
  background:var(--cyan);
  box-shadow:0 0 10px rgba(39,224,208,.85);
  flex:none;
}
.nav-links{
  display:flex;
  align-items:center;
  gap:36px;
  margin-left:auto;
}
.nav-links a{
  position:relative;
  font-size:14.5px;
  letter-spacing:.02em;
  color:var(--text-2);
  padding:6px 0;
  transition:var(--ease);
}
.nav-links a:hover{color:var(--text-1);}
.nav-links a::after{
  content:"";
  position:absolute;
  left:0;right:0;bottom:-2px;
  height:2px;
  border-radius:2px;
  background:linear-gradient(90deg,var(--primary),var(--cyan));
  opacity:0;
  transform:scaleX(.4);
  transform-origin:left;
  transition:var(--ease);
}
.nav-links a:hover::after{opacity:.5;transform:scaleX(1);}
.nav-links a.is-active{color:var(--text-1);font-weight:600;}
.nav-links a.is-active::after{
  opacity:1;
  transform:scaleX(1);
  box-shadow:0 0 12px rgba(47,123,255,.85);
}
.nav-right{display:flex;align-items:center;gap:12px;}
.btn-mini{
  display:inline-flex;
  align-items:center;
  height:38px;
  padding:0 18px;
  font-size:14px;
  border-radius:999px;
  border:1px solid var(--glass-line);
  background:var(--glass);
  backdrop-filter:blur(10px);
  -webkit-backdrop-filter:blur(10px);
  transition:var(--ease);
  white-space:nowrap;
}
.btn-mini:hover{background:var(--glass-2);border-color:var(--line-strong);transform:translateY(-1px);}
.icon-btn{
  width:40px;height:40px;
  display:inline-flex;
  align-items:center;
  justify-content:center;
  border-radius:10px;
  border:1px solid transparent;
  transition:var(--ease);
}
.icon-btn:hover{background:var(--glass);border-color:var(--glass-line);}
.icon-btn svg{
  width:19px;height:19px;
  fill:none;
  stroke:var(--text-2);
  stroke-width:1.5;
  stroke-linecap:round;
  stroke-linejoin:round;
  transition:var(--ease);
}
.icon-btn:hover svg{stroke:var(--text-1);}
.burger{display:none;flex-direction:column;gap:5px;}
.burger span{display:block;width:18px;height:1.5px;background:var(--text-2);border-radius:2px;transition:var(--ease);}
.burger:hover span{background:var(--text-1);}
.burger.open span:first-child{transform:translateY(3.25px) rotate(45deg);}
.burger.open span:last-child{transform:translateY(-3.25px) rotate(-45deg);}

/* 抽屉 */
.drawer{
  position:fixed;
  inset:0;
  z-index:55;
  background:rgba(7,11,20,.94);
  backdrop-filter:blur(18px);
  -webkit-backdrop-filter:blur(18px);
  padding:104px 24px 32px;
  display:flex;
  flex-direction:column;
  opacity:0;
  visibility:hidden;
  transform:translateY(-8px);
  transition:var(--ease);
}
.drawer.open{opacity:1;visibility:visible;transform:translateY(0);}
.drawer a.drawer-link{
  font-size:20px;
  padding:18px 4px;
  border-bottom:1px solid var(--line);
  color:var(--text-1);
  transition:var(--ease);
}
.drawer a.drawer-link:hover{padding-left:12px;color:var(--cyan);}
.drawer-foot{
  margin-top:auto;
  padding-top:26px;
  border-top:1px solid var(--line);
  display:flex;
  flex-direction:column;
  gap:16px;
}
.drawer-brand{display:inline-flex;align-items:center;gap:10px;font-weight:700;font-size:16px;}
.drawer-cta{
  display:inline-flex;
  align-items:center;
  justify-content:center;
  height:48px;
  border-radius:var(--r-btn);
  background:linear-gradient(180deg,var(--primary),var(--primary-600));
  box-shadow:var(--shadow-glow);
  font-weight:600;
  font-size:15px;
}

/* ============ 页面头部 ============ */
.page-head{
  position:relative;
  overflow:hidden;
  padding:64px 0 88px;
  border-bottom:1px solid var(--line);
}
.page-head .bg{
  position:absolute;
  inset:0;
  background-image:url("/assets/images/backpic/back-2.png");
  background-size:cover;
  background-position:center right;
  opacity:.34;
}
.page-head .veil{
  position:absolute;
  inset:0;
  background:linear-gradient(100deg, rgba(7,11,20,.97) 0%, rgba(7,11,20,.9) 42%, rgba(7,11,20,.62) 100%);
}
.crumb{
  display:flex;
  align-items:center;
  flex-wrap:wrap;
  gap:8px;
  font-size:13px;
  color:var(--text-3);
  margin-bottom:22px;
}
.crumb a{transition:var(--ease);}
.crumb a:hover{color:var(--cyan);}
.crumb .sep{opacity:.5;}
.crumb .now{color:var(--text-2);}
.head-grid{
  display:grid;
  grid-template-columns:minmax(0,1fr) 372px;
  gap:56px;
  align-items:center;
}
.page-head h1{
  font-size:54px;
  font-weight:800;
  letter-spacing:-.015em;
  margin-bottom:20px;
}
.page-head h1 .hl{
  color:var(--primary);
  text-shadow:0 0 28px rgba(47,123,255,.45);
}
.lede{
  font-size:16.5px;
  color:var(--text-2);
  max-width:620px;
}
.head-tags{
  display:flex;
  flex-wrap:wrap;
  gap:10px;
  margin-top:26px;
}
.tag{
  display:inline-flex;
  align-items:center;
  gap:7px;
  height:32px;
  padding:0 14px;
  font-size:13.5px;
  border-radius:999px;
  border:1px solid var(--glass-line);
  background:var(--glass);
  color:var(--text-2);
}
.tag i{
  width:5px;height:5px;border-radius:50%;background:var(--cyan);flex:none;
  box-shadow:0 0 8px rgba(39,224,208,.8);
}
.tag.warm i{background:var(--amber);box-shadow:0 0 8px rgba(255,179,92,.8);}
.head-actions{display:flex;flex-wrap:wrap;gap:16px;margin-top:32px;}
.btn{
  display:inline-flex;
  align-items:center;
  justify-content:center;
  gap:8px;
  height:50px;
  padding:0 28px;
  font-size:15px;
  font-weight:600;
  border-radius:var(--r-btn);
  transition:var(--ease);
  white-space:nowrap;
}
.btn-primary{
  background:linear-gradient(180deg,var(--primary),var(--primary-600));
  box-shadow:var(--shadow-glow), inset 0 1px 0 rgba(255,255,255,.22);
  color:#fff;
}
.btn-primary:hover{filter:brightness(1.1);box-shadow:0 0 0 1px rgba(47,123,255,.5),0 14px 38px rgba(47,123,255,.42);transform:translateY(-2px);}
.btn-ghost{
  border:1px solid var(--glass-line);
  background:var(--glass);
  backdrop-filter:blur(10px);
  -webkit-backdrop-filter:blur(10px);
  color:var(--text-1);
}
.btn-ghost:hover{background:var(--glass-2);border-color:var(--line-strong);transform:translateY(-2px);}
.btn:active{transform:scale(.98);}
.head-figure{
  position:relative;
  border-radius:var(--r-img);
  overflow:hidden;
  border:1px solid var(--glass-line);
  box-shadow:var(--shadow-1);
}
.head-figure img{
  width:100%;
  aspect-ratio:4/3;
  object-fit:cover;
}
.head-figure figcaption{
  position:absolute;
  left:0;right:0;bottom:0;
  padding:14px 18px;
  font-size:13px;
  color:var(--text-2);
  background:linear-gradient(0deg, rgba(7,11,20,.92), transparent);
}

/* ============ 通用板块 ============ */
.section{padding:96px 0;position:relative;z-index:2;}
.section.tight{padding:72px 0;}
.sec-head{
  display:flex;
  align-items:flex-end;
  justify-content:space-between;
  gap:24px;
  margin-bottom:44px;
}
.sec-head h2{font-size:34px;}
.sec-kicker{
  display:inline-block;
  font-size:13px;
  letter-spacing:.14em;
  color:var(--cyan);
  margin-bottom:12px;
}
.sec-sub{
  margin-top:12px;
  font-size:15px;
  color:var(--text-2);
  max-width:640px;
}
.text-link{
  display:inline-flex;
  align-items:center;
  gap:8px;
  font-size:14.5px;
  color:var(--text-2);
  transition:var(--ease);
}
.text-link svg{width:16px;height:16px;fill:none;stroke:currentColor;stroke-width:1.6;stroke-linecap:round;stroke-linejoin:round;transition:var(--ease);}
.text-link:hover{color:var(--cyan);}
.text-link:hover svg{transform:translateX(4px);}

/* 高频现象横滑 */
.swipe-wrap{position:relative;}
.swipe-wrap::before,.swipe-wrap::after{
  content:"";
  position:absolute;
  top:0;bottom:0;
  width:56px;
  pointer-events:none;
  z-index:3;
}
.swipe-wrap::before{left:0;background:linear-gradient(90deg,var(--bg-base),transparent);}
.swipe-wrap::after{right:0;background:linear-gradient(270deg,var(--bg-base),transparent);}
.swipe{
  display:flex;
  gap:18px;
  overflow-x:auto;
  padding:6px 4px 20px;
  scrollbar-width:thin;
  scroll-snap-type:x proximity;
}
.swipe::-webkit-scrollbar{height:6px;}
.swipe::-webkit-scrollbar-thumb{background:rgba(255,255,255,.14);border-radius:99px;}
.symptom{
  flex:0 0 300px;
  scroll-snap-align:start;
  padding:24px;
  border-radius:var(--r-card);
  background:var(--glass);
  border:1px solid var(--glass-line);
  backdrop-filter:blur(14px);
  -webkit-backdrop-filter:blur(14px);
  transition:var(--ease);
}
.symptom:hover{transform:translateY(-4px);border-color:var(--line-strong);box-shadow:0 0 0 1px rgba(47,123,255,.25),0 14px 32px rgba(47,123,255,.16);}
.symptom .idx{
  font-family:Inter,"HarmonyOS Sans SC",sans-serif;
  font-variant-numeric:tabular-nums;
  font-size:12.5px;
  color:var(--amber);
  letter-spacing:.08em;
  display:block;
  margin-bottom:14px;
}
.symptom h3{font-size:18px;margin-bottom:10px;}
.symptom p{font-size:14.5px;color:var(--text-2);}
.symptom .heat{
  display:inline-flex;
  align-items:center;
  height:24px;
  padding:0 10px;
  margin-top:16px;
  font-size:12.5px;
  border-radius:999px;
  border:1px solid rgba(39,224,208,.32);
  background:rgba(39,224,208,.08);
  color:var(--cyan);
}

/* FAQ */
.faq-block{
  display:grid;
  grid-template-columns:minmax(0,1fr) 340px;
  gap:48px;
  align-items:start;
}
.faq-list{
  border-top:1px solid var(--line);
}
.faq-item{
  border-bottom:1px solid var(--line);
}
.faq-item summary{
  list-style:none;
  cursor:pointer;
  display:flex;
  align-items:flex-start;
  justify-content:space-between;
  gap:20px;
  padding:22px 4px;
  font-size:17px;
  font-weight:600;
  color:var(--text-1);
  transition:var(--ease);
  min-height:44px;
}
.faq-item summary::-webkit-details-marker{display:none;}
.faq-item summary::after{
  content:"+";
  flex:none;
  font-size:22px;
  font-weight:400;
  line-height:1;
  color:var(--amber);
  transition:transform .22s cubic-bezier(.2,.7,.3,1);
  transform-origin:center;
}
.faq-item[open] summary::after{transform:rotate(45deg);}
.faq-item summary:hover{color:var(--cyan);}
.faq-a{
  padding:0 40px 24px 4px;
  font-size:15px;
  line-height:1.85;
  color:var(--text-2);
}
.faq-a p + p{margin-top:12px;}

.side-panel{
  position:sticky;
  top:104px;
  border-radius:var(--r-card);
  border:1px solid var(--glass-line);
  background:var(--glass);
  backdrop-filter:blur(14px);
  -webkit-backdrop-filter:blur(14px);
  padding:28px;
}
.side-panel h3{font-size:18px;margin-bottom:16px;}
.side-panel .step{
  display:flex;
  gap:14px;
  padding:14px 0;
  border-top:1px solid var(--line);
}
.side-panel .step:first-of-type{border-top:0;padding-top:0;}
.side-panel .step b{
  flex:none;
  width:26px;height:26px;
  display:inline-flex;
  align-items:center;
  justify-content:center;
  border-radius:8px;
  font-size:13px;
  font-weight:600;
  font-family:Inter,"HarmonyOS Sans SC",sans-serif;
  color:var(--amber);
  background:rgba(255,179,92,.1);
  border:1px solid rgba(255,179,92,.28);
}
.side-panel .step span{font-size:14.5px;color:var(--text-2);line-height:1.7;}
.side-panel .side-cta{
  margin-top:22px;
  display:inline-flex;
  width:100%;
  align-items:center;
  justify-content:center;
  height:46px;
  border-radius:var(--r-btn);
  border:1px solid var(--glass-line);
  background:var(--glass-2);
  font-size:14.5px;
  font-weight:600;
  transition:var(--ease);
}
.side-panel .side-cta:hover{border-color:var(--line-strong);color:var(--cyan);}

/* 对照表 */
.table-card{
  border-radius:var(--r-card);
  border:1px solid var(--glass-line);
  background:var(--glass);
  backdrop-filter:blur(14px);
  -webkit-backdrop-filter:blur(14px);
  overflow:hidden;
}
.table-scroll{overflow-x:auto;}
table{width:100%;border-collapse:collapse;min-width:620px;}
caption{
  text-align:left;
  padding:24px 28px 4px;
  font-size:14px;
  color:var(--text-3);
}
th,td{
  text-align:left;
  padding:20px 28px;
  font-size:15px;
  border-bottom:1px solid var(--line);
  vertical-align:top;
}
thead th{
  background:rgba(255,255,255,.035);
  color:var(--text-2);
  font-weight:600;
  font-size:14px;
  letter-spacing:.04em;
}
tbody tr{transition:var(--ease);}
tbody tr:hover{background:rgba(47,123,255,.06);}
td:first-child{color:var(--text-1);font-weight:600;width:38%;}
td:last-child{color:var(--text-2);}
tbody tr:last-child th,tbody tr:last-child td{border-bottom:0;}

/* CTA 横幅 */
.cta-band{
  position:relative;
  overflow:hidden;
  border-radius:var(--r-card);
  border:1px solid var(--glass-line);
  background:linear-gradient(115deg, rgba(47,123,255,.16), rgba(39,224,208,.07) 52%, rgba(255,179,92,.07));
  backdrop-filter:blur(14px);
  -webkit-backdrop-filter:blur(14px);
  padding:52px;
  display:grid;
  grid-template-columns:minmax(0,1fr) auto;
  gap:36px;
  align-items:center;
}
.cta-band h2{font-size:30px;margin-bottom:14px;}
.cta-band p{font-size:15px;color:var(--text-2);max-width:620px;}
.cta-actions{display:flex;gap:14px;flex-wrap:wrap;}

/* 相关入口 */
.related{
  display:grid;
  grid-template-columns:repeat(4,minmax(0,1fr));
  gap:18px;
}
.rel-card{
  display:flex;
  align-items:center;
  justify-content:space-between;
  gap:14px;
  padding:22px 24px;
  border-radius:var(--r-sm);
  border:1px solid var(--glass-line);
  background:var(--glass);
  font-size:15px;
  transition:var(--ease);
  min-height:44px;
}
.rel-card svg{width:16px;height:16px;fill:none;stroke:var(--text-3);stroke-width:1.6;stroke-linecap:round;stroke-linejoin:round;transition:var(--ease);}
.rel-card:hover{transform:translateY(-4px);border-color:var(--line-strong);background:var(--glass-2);box-shadow:0 0 0 1px rgba(47,123,255,.22),0 12px 28px rgba(47,123,255,.16);}
.rel-card:hover svg{stroke:var(--cyan);transform:translateX(4px);}
.back-row{
  margin-top:44px;
  padding-top:26px;
  border-top:1px solid var(--line);
  display:flex;
  justify-content:space-between;
  align-items:center;
  gap:20px;
  flex-wrap:wrap;
  font-size:14.5px;
  color:var(--text-3);
}

/* ============ 页脚 ============ */
.site-footer{
  background:#05080F;
  border-top:1px solid var(--line);
  padding:76px 0 0;
  position:relative;
  z-index:2;
}
.foot-grid{
  display:grid;
  grid-template-columns:1.5fr 1fr 1fr 1.3fr;
  gap:0;
}
.foot-col{padding:0 32px;}
.foot-col:first-child{padding-left:0;}
.foot-col:last-child{padding-right:0;}
.foot-col + .foot-col{border-left:1px solid var(--line);}
.foot-brand{
  display:inline-flex;
  align-items:center;
  gap:10px;
  font-size:17px;
  font-weight:700;
  margin-bottom:16px;
}
.foot-col p{font-size:14.5px;color:var(--text-2);line-height:1.8;}
.foot-title{
  font-size:14px;
  font-weight:600;
  color:var(--text-1);
  margin-bottom:18px;
  letter-spacing:.04em;
}
.foot-links{display:flex;flex-direction:column;gap:12px;}
.foot-links a{font-size:14.5px;color:var(--text-2);transition:var(--ease);}
.foot-links a:hover{color:var(--cyan);padding-left:4px;}
.foot-bottom{
  margin-top:64px;
  padding:24px 0;
  border-top:1px solid var(--line);
  text-align:center;
  font-size:13px;
  color:var(--text-3);
}

/* ============ 响应式 ============ */
@media (max-width:1200px){
  .head-grid{grid-template-columns:minmax(0,1fr) 320px;gap:40px;}
  .page-head h1{font-size:46px;}
  .faq-block{grid-template-columns:minmax(0,1fr) 300px;gap:36px;}
  .related{grid-template-columns:repeat(2,minmax(0,1fr));}
}
@media (max-width:1024px){
  .nav-links{display:none;}
  .burger{display:inline-flex;}
  .search-btn{display:none;}
  .head-grid{grid-template-columns:1fr;gap:36px;}
  .head-figure{max-width:520px;}
  .page-head h1{font-size:42px;}
  .faq-block{grid-template-columns:1fr;}
  .side-panel{position:static;}
  .cta-band{grid-template-columns:1fr;padding:40px;}
  .foot-grid{grid-template-columns:1fr 1fr;row-gap:40px;}
  .foot-col{padding:0;}
  .foot-col + .foot-col{border-left:0;}
  .foot-col:nth-child(even){padding-left:28px;}
}
@media (max-width:768px){
  body{font-size:16px;}
  .wrap{padding:0 20px;}
  .section{padding:64px 0;}
  .section.tight{padding:52px 0;}
  .page-head{padding:44px 0 64px;}
  .page-head h1{font-size:32px;}
  .sec-head{flex-direction:column;align-items:flex-start;gap:14px;margin-bottom:32px;}
  .sec-head h2{font-size:26px;}
  .cta-band h2{font-size:24px;}
  .symptom{flex:0 0 78%;}
  .faq-item summary{font-size:16px;}
  .faq-a{padding-right:8px;}
  th,td{padding:16px 20px;}
  caption{padding:20px 20px 4px;}
  .foot-grid{grid-template-columns:1fr;}
  .foot-col:nth-child(even){padding-left:0;}
  .foot-col + .foot-col{border-left:0;border-top:1px solid var(--line);padding-top:32px;}
  .back-row{flex-direction:column;align-items:flex-start;}
}
@media (max-width:480px){
  .page-head h1{font-size:28px;}
  .head-actions{flex-direction:column;align-items:stretch;}
  .btn{width:100%;}
  .cta-actions{flex-direction:column;align-items:stretch;}
  .related{grid-template-columns:1fr;}
  .symptom{flex:0 0 88%;padding:20px;}
  .table-card{border-radius:var(--r-sm);}
}