/* roulang page: index */
/* ================= 设计变量 ================= */
:root{
  --bg-0:#05070C;
  --bg-1:#0B1118;
  --bg-2:#121A24;
  --brand:#3BE0C8;
  --brand-soft:rgba(59,224,200,.14);
  --accent:#FF6B4A;
  --line:rgba(255,255,255,.10);
  --glass:rgba(255,255,255,.06);
  --tx-1:#EAF2F6;
  --tx-2:#A9B7C2;
  --tx-3:#6E7D8A;
  --r-lg:18px;
  --r-md:16px;
  --r-sm:12px;
  --sh-card:0 18px 40px rgba(0,0,0,.45);
  --sh-soft:0 10px 26px rgba(0,0,0,.35);
  --sh-glow:0 8px 24px rgba(59,224,200,.35),0 0 0 1px rgba(59,224,200,.6);
  --maxw:1200px;
  --ease:cubic-bezier(.2,.7,.3,1);
  --font-cn:"PingFang SC","HarmonyOS Sans SC","Microsoft YaHei",system-ui,-apple-system,"Segoe UI",sans-serif;
  --font-num:"Inter","Oswald","HarmonyOS Sans SC",system-ui,sans-serif;
}

/* ================= 基础重置 ================= */
*,*::before,*::after{box-sizing:border-box;}
html{-webkit-text-size-adjust:100%;scroll-behavior:smooth;}
body{
  margin:0;
  background:var(--bg-0);
  color:var(--tx-1);
  font-family:var(--font-cn);
  font-size:16px;
  line-height:1.8;
  -webkit-font-smoothing:antialiased;
  overflow-x:hidden;
  position:relative;
}
body::before{
  content:"";
  position:fixed;
  inset:0;
  z-index:0;
  pointer-events:none;
  background-image:
    linear-gradient(rgba(255,255,255,.026) 1px,transparent 1px),
    linear-gradient(90deg,rgba(255,255,255,.026) 1px,transparent 1px);
  background-size:56px 56px;
  -webkit-mask-image:radial-gradient(circle at 50% 0%,#000 0%,transparent 70%);
  mask-image:radial-gradient(circle at 50% 0%,#000 0%,transparent 70%);
}
img{max-width:100%;display:block;height:auto;}
a{color:inherit;text-decoration:none;transition:color .18s var(--ease),border-color .18s var(--ease),background-color .18s var(--ease);}
a:hover{color:var(--brand);}
button{font:inherit;color:inherit;background:none;border:0;cursor:pointer;}
ul,ol{margin:0;padding:0;list-style:none;}
h1,h2,h3,h4{margin:0;font-weight:700;line-height:1.35;letter-spacing:.005em;}
p{margin:0 0 1em;}
p:last-child{margin-bottom:0;}
:focus-visible{outline:2px solid var(--brand);outline-offset:3px;border-radius:6px;}
::selection{background:rgba(59,224,200,.32);color:#05100d;}

/* Foundation 覆盖 */
.grid-x{display:flex;flex-flow:row wrap;}
.grid-x.grid-padding-x{margin-left:-10px;margin-right:-10px;}
.grid-x.grid-padding-x>.cell{padding-left:10px;padding-right:10px;}
.grid-x.grid-padding-y{margin-top:-12px;}
.grid-x.grid-padding-y>.cell{padding-top:12px;padding-bottom:12px;}
body,button,input,select,textarea{font-family:var(--font-cn);}
.accordion-title,.accordion-content{background:transparent;}

/* ================= 容器与板块 ================= */
.container{width:100%;max-width:var(--maxw);margin:0 auto;padding:0 20px;position:relative;z-index:1;}
@media(min-width:1024px){.container{padding:0 32px;}}
.section{padding:56px 0;position:relative;}
.section--alt{background:var(--bg-1);border-top:1px solid var(--line);border-bottom:1px solid var(--line);}
@media(min-width:640px){.section{padding:72px 0;}}
@media(min-width:1024px){.section{padding:92px 0;}}

.sec-head{margin-bottom:32px;max-width:780px;}
.sec-title{
  position:relative;
  margin:0 0 12px;
  padding-left:16px;
  font-size:clamp(22px,3vw,30px);
  font-weight:700;
  color:var(--tx-1);
}
.sec-title::before{
  content:"";
  position:absolute;
  left:0;top:6px;bottom:6px;
  width:4px;
  border-radius:3px;
  background:var(--brand);
  box-shadow:0 0 16px rgba(59,224,200,.75);
}
.sec-sub{margin:0;color:var(--tx-2);font-size:15px;line-height:1.8;}
.sec-head--center{margin-left:auto;margin-right:auto;text-align:center;}
.sec-head--center .sec-title{padding-left:0;}
.sec-head--center .sec-title::before{left:50%;top:auto;bottom:-12px;transform:translateX(-50%);width:44px;height:3px;}

/* ================= 按钮 ================= */
.btn{
  display:inline-flex;
  align-items:center;
  justify-content:center;
  gap:8px;
  height:48px;
  padding:0 24px;
  border-radius:var(--r-sm);
  font-size:15px;
  font-weight:600;
  border:1px solid transparent;
  white-space:nowrap;
  transition:transform .18s var(--ease),box-shadow .18s var(--ease),background-color .18s var(--ease),border-color .18s var(--ease),color .18s var(--ease);
}
.btn--primary{background:var(--brand);color:#04140F;box-shadow:var(--sh-glow);}
.btn--primary:hover{background:#55E9D3;color:#04140F;transform:translateY(-2px);box-shadow:0 14px 30px rgba(59,224,200,.45),0 0 0 1px rgba(59,224,200,.75);}
.btn--primary:active{transform:translateY(0);}
.btn--ghost{background:rgba(255,255,255,.04);border-color:var(--line);color:var(--tx-1);}
.btn--ghost:hover{border-color:rgba(59,224,200,.55);color:var(--brand);background:rgba(59,224,200,.08);transform:translateY(-2px);}
.btn--sm{height:40px;padding:0 18px;font-size:14px;border-radius:10px;}

/* ================= 徽章与标签 ================= */
.badge{
  display:inline-flex;
  align-items:center;
  gap:6px;
  height:24px;
  padding:0 10px;
  border-radius:999px;
  font-size:12px;
  letter-spacing:.04em;
  color:var(--brand);
  border:1px solid rgba(59,224,200,.45);
  background:var(--brand-soft);
  white-space:nowrap;
}
.badge--accent{color:var(--accent);border-color:rgba(255,107,74,.45);background:rgba(255,107,74,.12);}
.eyebrow{
  display:inline-flex;
  align-items:center;
  gap:8px;
  font-size:12.5px;
  letter-spacing:.06em;
  color:var(--tx-2);
  padding:6px 12px;
  border-radius:999px;
  border:1px solid var(--line);
  background:var(--glass);
  margin-bottom:18px;
}
.eyebrow::before{
  content:"";
  width:6px;height:6px;border-radius:50%;
  background:var(--brand);
  box-shadow:0 0 10px rgba(59,224,200,.95);
}

/* ================= 顶部导航 ================= */
.site-header{
  position:sticky;
  top:0;
  z-index:60;
  background:rgba(5,7,12,.86);
  -webkit-backdrop-filter:blur(14px);
  backdrop-filter:blur(14px);
  border-bottom:1px solid var(--line);
}
.header-inner{display:flex;align-items:center;gap:18px;height:64px;}
.logo{display:flex;align-items:center;gap:10px;flex:0 0 auto;}
.logo-mark{
  width:30px;height:30px;
  border-radius:9px;
  display:grid;place-items:center;
  font-family:var(--font-num);
  font-size:12px;
  font-weight:800;
  letter-spacing:.02em;
  color:#04140F;
  background:linear-gradient(145deg,#5CF0DA,#1E9C88);
  box-shadow:0 0 18px rgba(59,224,200,.45);
}
.logo-text{font-size:15.5px;font-weight:700;letter-spacing:.01em;white-space:nowrap;}
.nav{margin-left:auto;}
.nav-list{display:flex;align-items:center;gap:2px;}
.nav-link{
  position:relative;
  display:block;
  padding:9px 13px;
  font-size:14.5px;
  color:var(--tx-2);
  border-radius:10px;
}
.nav-link:hover{color:var(--tx-1);background:rgba(255,255,255,.045);}
.nav-link.is-active{color:var(--tx-1);font-weight:600;}
.nav-link.is-active::after{
  content:"";
  position:absolute;
  left:13px;right:13px;bottom:1px;
  height:2px;
  border-radius:2px;
  background:var(--brand);
  box-shadow:0 0 12px rgba(59,224,200,.95);
}
.nav-cta{flex:0 0 auto;margin-left:8px;}
.nav-toggle{
  display:none;
  margin-left:auto;
  width:42px;height:42px;
  border-radius:12px;
  border:1px solid var(--line);
  background:var(--glass);
  align-items:center;
  justify-content:center;
  color:var(--tx-1);
  font-size:16px;
}
.nav-toggle:hover{border-color:rgba(59,224,200,.5);color:var(--brand);}

/* 移动端抽屉 */
.drawer{
  position:fixed;
  inset:0;
  z-index:90;
  background:rgba(5,7,12,.97);
  -webkit-backdrop-filter:blur(18px);
  backdrop-filter:blur(18px);
  padding:0 20px 40px;
  transform:translateY(-101%);
  transition:transform .3s var(--ease);
  overflow-y:auto;
  visibility:hidden;
}
.drawer.is-open{transform:translateY(0);visibility:visible;}
.drawer-head{display:flex;align-items:center;justify-content:space-between;height:64px;}
.drawer-close{
  width:40px;height:40px;border-radius:12px;
  border:1px solid var(--line);
  background:var(--glass);
  display:grid;place-items:center;
  font-size:18px;
}
.drawer-close:hover{border-color:rgba(59,224,200,.5);color:var(--brand);}
.drawer-list{margin-top:12px;border-top:1px solid var(--line);}
.drawer-link{
  display:flex;
  align-items:center;
  justify-content:space-between;
  height:48px;
  padding:0 4px;
  font-size:15.5px;
  color:var(--tx-2);
  border-bottom:1px solid var(--line);
}
.drawer-link:hover,.drawer-link.is-active{color:var(--brand);}
.drawer-cta{margin-top:24px;width:100%;}

/* ================= Hero ================= */
.hero{position:relative;padding:52px 0 60px;overflow:hidden;}
.hero::before{
  content:"";
  position:absolute;
  top:-240px;left:-140px;
  width:720px;height:720px;
  border-radius:50%;
  background:radial-gradient(circle,rgba(59,224,200,.16),transparent 62%);
  pointer-events:none;
}
.hero::after{
  content:"";
  position:absolute;
  right:-180px;bottom:-260px;
  width:560px;height:560px;
  border-radius:50%;
  background:radial-gradient(circle,rgba(255,107,74,.10),transparent 65%);
  pointer-events:none;
}
@media(min-width:1024px){.hero{padding:72px 0 88px;}}
.hero-grid{position:relative;z-index:1;}
.hero-media{margin-bottom:36px;}
.poster{
  position:relative;
  margin:0 auto;
  width:100%;
  max-width:300px;
  aspect-ratio:9/16;
  border-radius:var(--r-lg);
  overflow:hidden;
  border:1px solid var(--line);
  box-shadow:var(--sh-card);
  background:var(--bg-2);
}
.poster img{width:100%;height:100%;object-fit:cover;}
.poster::after{
  content:"";
  position:absolute;
  inset:0;
  background:linear-gradient(to top,rgba(5,7,12,.94) 6%,rgba(5,7,12,.25) 46%,rgba(5,7,12,0) 72%);
}
.poster-badge{
  position:absolute;
  top:14px;right:14px;
  z-index:2;
  height:26px;
  padding:0 10px;
  display:inline-flex;
  align-items:center;
  border-radius:999px;
  font-size:12px;
  letter-spacing:.04em;
  color:#1C0B05;
  background:var(--accent);
  box-shadow:0 6px 18px rgba(255,107,74,.4);
}
.poster-time{
  position:absolute;
  top:14px;left:14px;
  z-index:2;
  font-family:var(--font-num);
  font-size:12px;
  letter-spacing:.06em;
  padding:4px 9px;
  border-radius:8px;
  background:rgba(5,7,12,.7);
  border:1px solid var(--line);
  color:var(--tx-1);
}
.poster-cap{
  position:absolute;
  left:18px;right:18px;bottom:18px;
  z-index:2;
  font-size:13px;
  color:var(--tx-2);
  line-height:1.6;
}
.hero-title{
  font-size:clamp(28px,4.2vw,44px);
  line-height:1.2;
  font-weight:700;
  margin:0 0 18px;
}
.hero-title em{
  font-style:normal;
  color:var(--brand);
  text-shadow:0 0 26px rgba(59,224,200,.35);
}
.hero-sub{
  font-size:16px;
  color:var(--tx-2);
  line-height:1.85;
  max-width:640px;
  margin:0 0 28px;
}
.hero-actions{display:flex;flex-wrap:wrap;gap:14px;margin-bottom:34px;}
.stat-row{display:grid;grid-template-columns:repeat(3,minmax(0,1fr));gap:12px;max-width:560px;}
.stat{
  padding:14px 16px;
  border-radius:14px;
  background:var(--glass);
  border:1px solid var(--line);
  -webkit-backdrop-filter:blur(10px);
  backdrop-filter:blur(10px);
}
.stat strong{
  display:block;
  font-family:var(--font-num);
  font-size:22px;
  line-height:1.2;
  color:var(--brand);
  letter-spacing:.01em;
}
.stat span{display:block;font-size:12.5px;color:var(--tx-2);margin-top:4px;line-height:1.5;}

/* ================= 横滑轨道 ================= */
.rail-shell{position:relative;}
.rail{
  display:flex;
  gap:16px;
  overflow-x:auto;
  overflow-y:hidden;
  scroll-snap-type:x mandatory;
  -webkit-overflow-scrolling:touch;
  padding:6px 20px 26px;
  scrollbar-width:none;
}
.rail::-webkit-scrollbar{display:none;}
@media(min-width:1024px){
  .rail{
    padding-left:max(32px,calc((100vw - var(--maxw)) / 2 + 32px));
    padding-right:max(32px,calc((100vw - var(--maxw)) / 2 + 32px));
  }
}
.rail-btn{
  position:absolute;
  top:38%;
  z-index:5;
  width:42px;height:42px;
  border-radius:50%;
  display:none;
  align-items:center;
  justify-content:center;
  font-size:18px;
  color:var(--tx-1);
  background:rgba(11,17,24,.78);
  border:1px solid var(--line);
  -webkit-backdrop-filter:blur(10px);
  backdrop-filter:blur(10px);
  transition:all .18s var(--ease);
}
.rail-btn:hover{border-color:rgba(59,224,200,.6);color:var(--brand);background:rgba(18,26,36,.95);}
.rail-btn--prev{left:14px;}
.rail-btn--next{right:14px;}
@media(min-width:1024px){.rail-btn{display:flex;}}

.rail-card{
  flex:0 0 250px;
  scroll-snap-align:start;
  background:var(--bg-2);
  border:1px solid var(--line);
  border-radius:var(--r-md);
  overflow:hidden;
  transition:transform .18s var(--ease),border-color .18s var(--ease),box-shadow .18s var(--ease);
}
@media(max-width:639px){.rail-card{flex:0 0 78vw;}}
.rail-card:hover{transform:translateY(-4px);border-color:rgba(59,224,200,.55);box-shadow:var(--sh-card);}
.rail-thumb{position:relative;aspect-ratio:16/10;overflow:hidden;background:#0A0F16;}
.rail-thumb img{width:100%;height:100%;object-fit:cover;transition:transform .4s var(--ease);}
.rail-card:hover .rail-thumb img{transform:scale(1.05);}
.rail-thumb .badge{position:absolute;left:12px;bottom:12px;}
.rail-body{padding:16px 16px 18px;}
.rail-title{font-size:15.5px;font-weight:600;line-height:1.55;margin:0 0 10px;}
.rail-meta{
  display:flex;
  align-items:center;
  gap:10px;
  font-family:var(--font-num);
  font-size:12px;
  letter-spacing:.03em;
  color:var(--tx-3);
}

/* ================= 栏目卡片 ================= */
.cat-card{
  display:flex;
  flex-direction:column;
  height:100%;
  background:var(--bg-2);
  border:1px solid var(--line);
  border-radius:var(--r-md);
  overflow:hidden;
  box-shadow:var(--sh-soft);
  transition:transform .18s var(--ease),border-color .18s var(--ease),box-shadow .18s var(--ease);
}
.cat-card:hover{transform:translateY(-4px);border-color:rgba(59,224,200,.55);box-shadow:var(--sh-card);color:inherit;}
.cat-img{width:100%;aspect-ratio:16/9;object-fit:cover;}
.cat-body{padding:18px 18px 20px;display:flex;flex-direction:column;flex:1;}
.cat-title{font-size:17px;font-weight:700;margin:0 0 10px;}
.cat-desc{font-size:13.8px;color:var(--tx-2);line-height:1.75;margin:0 0 16px;flex:1;}
.cat-more{
  font-size:13.5px;
  font-weight:600;
  color:var(--brand);
  display:inline-flex;
  align-items:center;
  gap:6px;
}
.cat-card:hover .cat-more{gap:10px;}

/* ================= 上手清单 ================= */
.checklist{border-top:1px dashed rgba(255,255,255,.14);}
.check-item{
  display:flex;
  align-items:center;
  gap:20px;
  padding:24px 0;
  border-bottom:1px dashed rgba(255,255,255,.14);
}
.check-num{
  flex:0 0 auto;
  font-family:var(--font-num);
  font-size:40px;
  line-height:1;
  font-weight:700;
  color:transparent;
  -webkit-text-stroke:1.4px rgba(59,224,200,.85);
  letter-spacing:.02em;
}
.check-body{flex:1 1 auto;min-width:0;}
.check-body h3{font-size:17px;font-weight:700;margin:0 0 8px;}
.check-body p{font-size:14px;color:var(--tx-2);line-height:1.8;margin:0;}
.check-thumb{
  flex:0 0 auto;
  width:80px;height:80px;
  object-fit:cover;
  border-radius:12px;
  border:1px solid var(--line);
}
@media(max-width:639px){
  .check-item{gap:14px;padding:20px 0;}
  .check-num{font-size:30px;}
  .check-thumb{width:64px;height:64px;}
}

/* ================= 口碑条 ================= */
.voice-card{
  flex:0 0 320px;
  scroll-snap-align:start;
  display:flex;
  align-items:center;
  gap:12px;
  padding:14px 16px;
  border-radius:14px;
  background:var(--glass);
  border:1px solid var(--line);
  -webkit-backdrop-filter:blur(12px);
  backdrop-filter:blur(12px);
}
@media(max-width:639px){.voice-card{flex:0 0 80vw;}}
.voice-ava{
  flex:0 0 auto;
  width:40px;height:40px;
  border-radius:50%;
  display:grid;place-items:center;
  font-size:14px;
  font-weight:700;
  color:#04140F;
  background:linear-gradient(145deg,#5CF0DA,#1E9C88);
}
.voice-main{min-width:0;}
.voice-id{
  display:flex;
  align-items:center;
  gap:8px;
  font-size:13.5px;
  font-weight:600;
  color:var(--tx-1);
}
.voice-star{color:var(--accent);font-size:11.5px;letter-spacing:.12em;}
.voice-text{
  margin:2px 0 0;
  font-size:13px;
  color:var(--tx-2);
  line-height:1.55;
  white-space:nowrap;
  overflow:hidden;
  text-overflow:ellipsis;
}

/* ================= CMS 内容卡 ================= */
.cms-card{
  display:flex;
  flex-direction:column;
  height:100%;
  gap:12px;
  padding:22px 22px 20px;
  background:var(--bg-2);
  border:1px solid var(--line);
  border-radius:var(--r-md);
  box-shadow:var(--sh-soft);
  transition:transform .18s var(--ease),border-color .18s var(--ease),box-shadow .18s var(--ease);
}
.cms-card:hover{transform:translateY(-4px);border-color:rgba(59,224,200,.5);box-shadow:var(--sh-card);}
.cms-card .badge{align-self:flex-start;}
.cms-title{font-size:17px;font-weight:600;line-height:1.6;margin:0;}
.cms-title a:hover{color:var(--brand);}
.cms-ex{
  margin:0;
  font-size:14px;
  color:var(--tx-2);
  line-height:1.78;
  display:-webkit-box;
  -webkit-line-clamp:2;
  -webkit-box-orient:vertical;
  overflow:hidden;
}
.cms-foot{
  display:flex;
  align-items:center;
  justify-content:space-between;
  gap:12px;
  margin-top:auto;
  padding-top:14px;
  border-top:1px solid var(--line);
}
.cms-date{font-family:var(--font-num);font-size:12.5px;letter-spacing:.03em;color:var(--tx-3);}
.cms-link{font-size:13.5px;font-weight:600;color:var(--brand);display:inline-flex;align-items:center;gap:6px;}
.cms-card:hover .cms-link{gap:10px;}
.empty-state{
  width:100%;
  padding:44px 24px;
  text-align:center;
  border:1px dashed rgba(255,255,255,.22);
  border-radius:var(--r-md);
  color:var(--tx-2);
  font-size:14.5px;
  background:rgba(255,255,255,.02);
}
.empty-state i{display:block;font-size:24px;color:var(--tx-3);margin-bottom:12px;}

/* ================= FAQ ================= */
.faq-wrap{max-width:880px;}
.accordion{border:0;margin:0;background:transparent;}
.accordion .accordion-item{
  border:1px solid var(--line);
  border-radius:14px;
  background:var(--bg-2);
  margin-bottom:12px;
  overflow:hidden;
  transition:border-color .18s var(--ease);
}
.accordion .accordion-item.is-active{border-color:rgba(59,224,200,.5);}
.accordion .accordion-title{
  display:flex;
  align-items:center;
  gap:12px;
  height:56px;
  padding:0 52px 0 20px;
  font-size:15.5px;
  font-weight:600;
  color:var(--tx-1);
  border:0;
  background:transparent;
  position:relative;
}
.accordion .accordion-title:hover{background:rgba(255,255,255,.03);color:var(--brand);}
.accordion .accordion-title::before{
  content:"?";
  position:static;
  flex:0 0 24px;
  width:24px;height:24px;
  display:grid;place-items:center;
  border-radius:8px;
  background:var(--brand-soft);
  color:var(--brand);
  font-size:13px;
  font-weight:800;
  border:0;
  transform:none;
}
.accordion .accordion-title::after{
  content:"";
  position:absolute;
  right:22px;top:50%;
  width:9px;height:9px;
  border-right:2px solid var(--tx-3);
  border-bottom:2px solid var(--tx-3);
  transform:translateY(-70%) rotate(45deg);
  transition:transform .2s var(--ease),border-color .2s var(--ease);
}
.accordion .accordion-item.is-active .accordion-title{color:var(--brand);}
.accordion .accordion-item.is-active .accordion-title::after{
  transform:translateY(-20%) rotate(225deg);
  border-color:var(--brand);
}
.accordion .accordion-content{
  position:relative;
  padding:0 22px 22px 58px;
  border:0;
  background:transparent;
  color:var(--tx-2);
  font-size:14.5px;
  line-height:1.85;
}
.accordion .accordion-content::before{
  content:"";
  position:absolute;
  left:22px;top:2px;bottom:22px;
  width:2px;
  border-radius:2px;
  background:var(--brand);
  opacity:.55;
}
.accordion .accordion-content p{margin:0;}

/* ================= CTA 带 ================= */
.cta-band{
  position:relative;
  overflow:hidden;
  padding:52px 0;
  background:linear-gradient(120deg,rgba(59,224,200,.12),rgba(11,17,24,.4) 46%,rgba(255,107,74,.10));
  border-top:1px solid var(--line);
  border-bottom:1px solid var(--line);
}
@media(min-width:1024px){.cta-band{padding:64px 0;}}
.cta-inner{
  display:flex;
  flex-wrap:wrap;
  align-items:center;
  justify-content:space-between;
  gap:24px;
}
.cta-title{font-size:clamp(20px,2.6vw,28px);font-weight:700;margin:0 0 10px;}
.cta-sub{font-size:14.5px;color:var(--tx-2);margin:0;line-height:1.8;max-width:620px;}

/* ================= 页脚 ================= */
.site-footer{
  background:var(--bg-0);
  border-top:1px solid var(--line);
  padding:56px 0 0;
  position:relative;
}
.site-footer::before{
  content:"";
  position:absolute;
  top:-1px;left:0;right:0;
  height:2px;
  background:linear-gradient(90deg,transparent,rgba(59,224,200,.7),transparent);
}
.footer-grid{padding-bottom:40px;}
.footer-brand p{font-size:13.8px;color:var(--tx-2);line-height:1.85;margin:16px 0 0;max-width:360px;}
.footer-h{
  font-size:14px;
  font-weight:700;
  color:var(--tx-1);
  margin:0 0 16px;
  letter-spacing:.02em;
}
.footer-col ul li{margin-bottom:10px;}
.footer-col ul li a{font-size:13.8px;color:var(--tx-2);}
.footer-col ul li a:hover{color:var(--brand);}
.footer-note{font-size:13.5px;color:var(--tx-2);line-height:1.85;margin:0 0 14px;}
.footer-bottom{
  display:flex;
  flex-wrap:wrap;
  align-items:center;
  justify-content:space-between;
  gap:12px;
  padding:20px 0 26px;
  border-top:1px solid var(--line);
  font-size:13px;
  color:var(--tx-3);
}
.footer-bottom span{font-family:var(--font-num);letter-spacing:.02em;}

/* ================= 移动端底部条 ================= */
.mobile-bar{
  position:fixed;
  left:0;right:0;bottom:0;
  z-index:70;
  display:none;
  align-items:center;
  gap:14px;
  padding:10px 16px calc(10px + env(safe-area-inset-bottom));
  background:rgba(11,17,24,.95);
  -webkit-backdrop-filter:blur(14px);
  backdrop-filter:blur(14px);
  border-top:1px solid var(--line);
  transform:translateY(130%);
  transition:transform .32s var(--ease);
}
.mobile-bar.is-visible{transform:translateY(0);}
.mobile-bar-info{min-width:0;flex:1;}
.mobile-bar-info strong{display:block;font-size:13.5px;color:var(--tx-1);}
.mobile-bar-info span{
  display:block;
  font-size:12px;
  color:var(--tx-3);
  white-space:nowrap;
  overflow:hidden;
  text-overflow:ellipsis;
}
@media(max-width:1023px){
  .mobile-bar{display:flex;}
  body{padding-bottom:80px;}
}

/* ================= 响应式 ================= */
@media(max-width:1023px){
  .nav,.nav-cta{display:none;}
  .nav-toggle{display:flex;}
  .hero-media{margin-bottom:30px;}
  .stat-row{max-width:none;}
}
@media(max-width:639px){
  .header-inner{height:56px;}
  .logo-text{font-size:14.5px;}
  .hero{padding:32px 0 44px;}
  .poster{max-width:250px;}
  .hero-actions{gap:10px;}
  .hero-actions .btn{flex:1 1 auto;min-width:150px;}
  .stat-row{grid-template-columns:1fr;gap:10px;}
  .stat{display:flex;align-items:baseline;gap:10px;padding:12px 14px;}
  .stat strong{font-size:18px;}
  .stat span{margin-top:0;}
  .sec-head{margin-bottom:24px;}
  .cta-inner{flex-direction:column;align-items:flex-start;}
  .cta-inner .btn{width:100%;}
  .check-item{align-items:flex-start;}
}

@media (prefers-reduced-motion:reduce){
  *,*::before,*::after{
    animation-duration:.01ms !important;
    transition-duration:.01ms !important;
    scroll-behavior:auto !important;
  }
}

/* roulang page: category1 */
:root{
  --bg-0:#05070C;
  --bg-1:#0B1118;
  --bg-2:#121A24;
  --brand:#3BE0C8;
  --brand-soft:rgba(59,224,200,.14);
  --accent:#FF6B4A;
  --line:rgba(255,255,255,.10);
  --glass:rgba(255,255,255,.06);
  --tx-1:#EAF2F6;
  --tx-2:#A9B7C2;
  --tx-3:#6E7D8A;
  --r-sm:12px;
  --r-md:16px;
  --r-lg:18px;
  --shadow:0 18px 40px rgba(0,0,0,.45);
  --glow:0 8px 24px rgba(59,224,200,.35),0 0 0 1px rgba(59,224,200,.6);
  --ease:cubic-bezier(.2,.7,.3,1);
  --font-cn:"PingFang SC","HarmonyOS Sans SC","Microsoft YaHei",system-ui,-apple-system,sans-serif;
  --font-num:"Inter","DIN Alternate","Helvetica Neue",Arial,sans-serif;
}
*,*::before,*::after{box-sizing:border-box}
html{-webkit-text-size-adjust:100%;scroll-behavior:smooth}
body{
  margin:0;
  background:var(--bg-0);
  color:var(--tx-1);
  font-family:var(--font-cn);
  font-size:16px;
  line-height:1.8;
  font-weight:400;
  -webkit-font-smoothing:antialiased;
}
img{max-width:100%;height:auto;display:block}
a{color:var(--brand);text-decoration:none;transition:color .18s var(--ease)}
a:hover{color:#fff}
ul,ol{margin:0;padding:0;list-style:none}
h1,h2,h3,h4{margin:0;font-weight:700;color:var(--tx-1)}
p{margin:0 0 1em}
p:last-child{margin-bottom:0}
button,input{font-family:inherit;font-size:inherit}
:focus-visible{outline:2px solid var(--brand);outline-offset:2px}
::selection{background:rgba(59,224,200,.28);color:#fff}
.container{width:100%;max-width:1200px;margin:0 auto;padding:0 20px}
@media screen and (min-width:1024px){.container{padding:0 32px}}
.sec{padding:48px 0;position:relative}
.sec--alt{background:var(--bg-1)}
@media screen and (min-width:640px){.sec{padding:64px 0}}
@media screen and (min-width:1024px){.sec{padding:88px 0}}

/* ---------- header ---------- */
.site-header{
  position:sticky;top:0;z-index:60;
  background:rgba(5,7,12,.86);
  -webkit-backdrop-filter:blur(14px);
  backdrop-filter:blur(14px);
  border-bottom:1px solid var(--line);
  transition:box-shadow .2s var(--ease),border-color .2s var(--ease);
}
.site-header.is-scrolled{box-shadow:0 12px 30px rgba(0,0,0,.55);border-bottom-color:rgba(59,224,200,.28)}
.header-inner{display:flex;align-items:center;gap:16px;height:56px}
@media screen and (min-width:1024px){.header-inner{height:64px;gap:24px}}
.logo{display:flex;align-items:center;gap:10px;color:var(--tx-1);text-decoration:none;flex:0 0 auto}
.logo:hover{color:var(--tx-1)}
.logo-mark{
  display:inline-flex;align-items:center;justify-content:center;
  width:34px;height:34px;border-radius:10px;
  font-family:var(--font-num);font-size:13px;font-weight:700;letter-spacing:.04em;
  color:#04120F;background:linear-gradient(140deg,#3BE0C8,#22b39f);
  box-shadow:0 6px 16px rgba(59,224,200,.35);
}
.logo-text{font-size:15px;font-weight:600;letter-spacing:.01em;white-space:nowrap}
@media screen and (min-width:1024px){.logo-text{font-size:16px}}
.nav{margin-left:auto}
.nav-list{display:flex;align-items:center;gap:2px}
.nav-link{
  position:relative;display:block;padding:0 14px;line-height:56px;
  font-size:15px;color:var(--tx-2);text-decoration:none;white-space:nowrap;
}
@media screen and (min-width:1024px){.nav-link{line-height:64px}}
.nav-link:hover{color:var(--tx-1)}
.nav-link.is-active{color:#fff}
.nav-link.is-active::after{
  content:"";position:absolute;left:14px;right:14px;bottom:0;height:2px;
  background:var(--brand);box-shadow:0 0 12px rgba(59,224,200,.85);border-radius:2px;
}
.header-cta{display:none}
@media screen and (min-width:1024px){.header-cta{display:inline-flex;margin-left:8px}}
.nav-toggle{
  display:inline-flex;flex-direction:column;justify-content:center;gap:5px;
  margin-left:auto;width:44px;height:44px;padding:0 11px;
  background:var(--glass);border:1px solid var(--line);border-radius:var(--r-sm);
  cursor:pointer;transition:border-color .18s var(--ease),background .18s var(--ease);
}
.nav-toggle:hover{border-color:rgba(59,224,200,.55)}
.nav-toggle span{display:block;height:2px;border-radius:2px;background:var(--tx-1);transition:transform .2s var(--ease),opacity .2s var(--ease)}
body.nav-open .nav-toggle span:nth-child(1){transform:translateY(7px) rotate(45deg)}
body.nav-open .nav-toggle span:nth-child(2){opacity:0}
body.nav-open .nav-toggle span:nth-child(3){transform:translateY(-7px) rotate(-45deg)}
@media screen and (max-width:1023px){
  .nav{
    position:fixed;left:0;right:0;top:56px;bottom:0;margin:0;
    background:rgba(5,7,12,.97);
    -webkit-backdrop-filter:blur(18px);backdrop-filter:blur(18px);
    border-top:1px solid var(--line);
    padding:8px 0 40px;overflow-y:auto;
    opacity:0;visibility:hidden;transform:translateY(-10px);
    transition:opacity .22s var(--ease),transform .22s var(--ease),visibility .22s var(--ease);
  }
  body.nav-open .nav{opacity:1;visibility:visible;transform:none}
  .nav-list{flex-direction:column;align-items:stretch;gap:0}
  .nav-link{height:48px;line-height:48px;padding:0 20px;font-size:16px;border-bottom:1px solid var(--line)}
  .nav-link.is-active{color:var(--brand);background:rgba(59,224,200,.06)}
  .nav-link.is-active::after{left:0;right:auto;top:12px;bottom:12px;width:2px;height:auto}
}
@media screen and (min-width:1024px){.nav-toggle{display:none}}

/* ---------- buttons ---------- */
.btn{
  display:inline-flex;align-items:center;justify-content:center;gap:8px;
  height:48px;padding:0 24px;border-radius:var(--r-sm);
  font-size:15px;font-weight:600;letter-spacing:.01em;text-decoration:none;
  border:1px solid transparent;cursor:pointer;
  transition:transform .18s var(--ease),box-shadow .18s var(--ease),filter .18s var(--ease),border-color .18s var(--ease),background .18s var(--ease);
}
.btn i{font-size:13px}
.btn-primary{background:var(--brand);color:#04120F;box-shadow:var(--glow)}
.btn-primary:hover{color:#04120F;filter:brightness(1.08);transform:translateY(-2px);box-shadow:0 14px 32px rgba(59,224,200,.45),0 0 0 1px rgba(59,224,200,.8)}
.btn-primary:active{transform:translateY(0)}
.btn-ghost{background:var(--glass);border-color:var(--line);color:var(--tx-1)}
.btn-ghost:hover{border-color:rgba(59,224,200,.6);color:#fff;transform:translateY(-2px)}
.btn-sm{height:40px;padding:0 18px;font-size:14px}
.btn-block{width:100%}

/* ---------- badges / tags ---------- */
.badge{
  display:inline-flex;align-items:center;gap:6px;
  padding:3px 10px;border-radius:999px;
  font-size:12px;letter-spacing:.04em;line-height:1.6;
  color:var(--brand);background:var(--brand-soft);border:1px solid rgba(59,224,200,.32);
}
.badge-hot{color:var(--accent);background:rgba(255,107,74,.12);border-color:rgba(255,107,74,.36)}
.tag{display:inline-block;padding:2px 10px;border-radius:999px;font-size:12px;color:var(--tx-2);background:var(--glass);border:1px solid var(--line)}

/* ---------- hero ---------- */
.hero{
  position:relative;overflow:hidden;
  padding:56px 0 56px;
  background-image:linear-gradient(180deg,rgba(5,7,12,.74) 0%,rgba(5,7,12,.92) 62%,var(--bg-0) 100%),url('/assets/images/backpic/back-1.png');
  background-size:cover;background-position:center;
  border-bottom:1px solid var(--line);
}
.hero::before{
  content:"";position:absolute;inset:0;pointer-events:none;opacity:.5;
  background-image:linear-gradient(rgba(255,255,255,.045) 1px,transparent 1px),linear-gradient(90deg,rgba(255,255,255,.045) 1px,transparent 1px);
  background-size:56px 56px;
  -webkit-mask-image:radial-gradient(ellipse at 30% 20%,#000 0%,transparent 72%);
  mask-image:radial-gradient(ellipse at 30% 20%,#000 0%,transparent 72%);
}
.hero::after{
  content:"";position:absolute;top:-140px;left:-80px;width:520px;height:520px;pointer-events:none;
  background:radial-gradient(circle,rgba(59,224,200,.16) 0%,transparent 66%);
}
.hero .container{position:relative;z-index:2}
.crumb{display:flex;flex-wrap:wrap;align-items:center;gap:8px;font-size:13px;color:var(--tx-3);margin-bottom:20px}
.crumb a{color:var(--tx-2)}
.crumb a:hover{color:var(--brand)}
.crumb span.sep{color:var(--tx-3);opacity:.6}
.hero h1{
  font-size:clamp(28px,4.2vw,44px);line-height:1.25;letter-spacing:-.01em;
  max-width:900px;margin-bottom:18px;
}
.hero h1 em{font-style:normal;color:var(--brand)}
.hero-sub{font-size:16px;color:var(--tx-2);max-width:720px;line-height:1.85;margin-bottom:28px}
.hero-actions{display:flex;flex-wrap:wrap;gap:12px;margin-bottom:32px}
.hero-stats{display:grid;grid-template-columns:repeat(3,minmax(0,1fr));gap:12px;max-width:660px}
.stat-card{
  background:var(--glass);border:1px solid var(--line);border-radius:var(--r-sm);
  padding:14px 16px;-webkit-backdrop-filter:blur(14px);backdrop-filter:blur(14px);
  transition:border-color .18s var(--ease),transform .18s var(--ease);
}
.stat-card:hover{border-color:rgba(59,224,200,.5);transform:translateY(-3px)}
.stat-num{display:block;font-family:var(--font-num);font-size:24px;font-weight:700;color:var(--brand);line-height:1.2}
.stat-label{display:block;font-size:12.5px;color:var(--tx-2);letter-spacing:.02em}
@media screen and (max-width:639px){
  .hero-stats{grid-template-columns:1fr 1fr}
  .hero-actions .btn{flex:1 1 100%}
}

/* ---------- section heading ---------- */
.sec-head{max-width:760px;margin-bottom:32px}
@media screen and (min-width:1024px){.sec-head{margin-bottom:44px}}
.eyebrow{
  display:inline-flex;align-items:center;gap:8px;
  font-family:var(--font-num);font-size:12px;letter-spacing:.16em;
  color:var(--brand);margin-bottom:12px;text-transform:uppercase;
}
.eyebrow::before{content:"";width:22px;height:1px;background:var(--brand);opacity:.7}
.sec-title{position:relative;padding-left:16px;font-size:clamp(22px,3vw,32px);line-height:1.32;margin-bottom:14px}
.sec-title::before{
  content:"";position:absolute;left:0;top:.2em;bottom:.2em;width:4px;border-radius:2px;
  background:var(--brand);box-shadow:0 0 12px rgba(59,224,200,.65);
}
.sec-desc{color:var(--tx-2);font-size:15.5px;max-width:720px}

/* ---------- steps ---------- */
.steps{display:grid;grid-template-columns:1fr;gap:16px}
@media screen and (min-width:640px){.steps{grid-template-columns:repeat(2,minmax(0,1fr))}}
@media screen and (min-width:1024px){.steps{grid-template-columns:repeat(4,minmax(0,1fr));gap:20px}}
.step{
  position:relative;background:var(--bg-2);border:1px solid var(--line);
  border-radius:var(--r-md);padding:24px 22px 26px;overflow:hidden;
  transition:transform .18s var(--ease),border-color .18s var(--ease),box-shadow .18s var(--ease);
}
.step:hover{transform:translateY(-4px);border-color:rgba(59,224,200,.5);box-shadow:var(--shadow)}
.step::after{
  content:"";position:absolute;left:22px;right:22px;top:0;height:2px;
  background:linear-gradient(90deg,var(--brand),transparent);opacity:0;transition:opacity .2s var(--ease);
}
.step:hover::after{opacity:1}
.step-no{
  font-family:var(--font-num);font-size:34px;font-weight:700;line-height:1;
  color:transparent;-webkit-text-stroke:1px rgba(59,224,200,.75);
  display:block;margin-bottom:16px;letter-spacing:.02em;
}
.step h3{font-size:18px;margin-bottom:10px}
.step p{font-size:14.5px;color:var(--tx-2);line-height:1.8}

/* ---------- entry list + sidebar ---------- */
.layout{display:grid;grid-template-columns:1fr;gap:32px}
@media screen and (min-width:1024px){.layout{grid-template-columns:minmax(0,8fr) minmax(0,4fr);gap:40px;align-items:start}}
.entry-list{display:flex;flex-direction:column}
.entry{
  display:grid;grid-template-columns:1fr;gap:16px;
  padding:24px 0;border-bottom:1px dashed var(--line);
}
.entry:first-child{padding-top:0}
.entry:last-child{border-bottom:0;padding-bottom:0}
@media screen and (min-width:640px){
  .entry{grid-template-columns:170px minmax(0,1fr);gap:22px;align-items:start}
}
.entry-thumb{
  border-radius:var(--r-sm);overflow:hidden;border:1px solid var(--line);
  background:var(--bg-2);aspect-ratio:16/11;
}
.entry-thumb img{width:100%;height:100%;object-fit:cover;transition:transform .35s var(--ease)}
.entry:hover .entry-thumb img{transform:scale(1.05)}
.entry-body h3{font-size:19px;margin:10px 0 8px;line-height:1.45}
.entry-body p{font-size:14.5px;color:var(--tx-2);line-height:1.85;margin-bottom:12px}
.entry-link{display:inline-flex;align-items:center;gap:8px;font-size:14px;font-weight:600;color:var(--brand)}
.entry-link i{transition:transform .18s var(--ease)}
.entry-link:hover{color:#fff}
.entry-link:hover i{transform:translateX(4px)}

.side{display:flex;flex-direction:column;gap:16px}
@media screen and (min-width:1024px){.side{position:sticky;top:88px}}
.side-card{
  background:var(--glass);border:1px solid var(--line);border-radius:var(--r-md);
  padding:22px 20px;-webkit-backdrop-filter:blur(14px);backdrop-filter:blur(14px);
}
.side-card h3{font-size:15px;letter-spacing:.04em;color:var(--tx-1);margin-bottom:14px;display:flex;align-items:center;gap:8px}
.side-card h3 i{color:var(--brand);font-size:13px}
.toc-list li{border-bottom:1px dashed var(--line)}
.toc-list li:last-child{border-bottom:0}
.toc-list a{display:flex;align-items:center;gap:10px;padding:10px 0;font-size:14.5px;color:var(--tx-2)}
.toc-list a::before{content:"";width:6px;height:6px;border-radius:50%;background:var(--tx-3);flex:0 0 auto;transition:background .18s var(--ease),box-shadow .18s var(--ease)}
.toc-list a:hover{color:#fff}
.toc-list a:hover::before{background:var(--brand);box-shadow:0 0 10px rgba(59,224,200,.9)}
.link-list li{margin-bottom:10px}
.link-list li:last-child{margin-bottom:0}
.link-list a{
  display:flex;align-items:center;justify-content:space-between;gap:10px;
  padding:11px 14px;border-radius:var(--r-sm);border:1px solid var(--line);
  background:rgba(255,255,255,.02);font-size:14px;color:var(--tx-2);
  transition:border-color .18s var(--ease),color .18s var(--ease),transform .18s var(--ease);
}
.link-list a:hover{color:#fff;border-color:rgba(59,224,200,.55);transform:translateX(3px)}
.link-list a i{font-size:12px;color:var(--brand)}
.side-note{font-size:13.5px;color:var(--tx-2);line-height:1.8}

/* ---------- scenario list (numbered) ---------- */
.scene-list{border-top:1px solid var(--line)}
.scene{
  display:grid;grid-template-columns:56px minmax(0,1fr) 84px;gap:18px;align-items:center;
  padding:22px 0;border-bottom:1px dashed var(--line);
}
.scene-no{
  font-family:var(--font-num);font-size:30px;font-weight:700;line-height:1;
  color:transparent;-webkit-text-stroke:1px rgba(59,224,200,.8);
}
.scene-body h3{font-size:18px;margin-bottom:6px}
.scene-body p{font-size:14.5px;color:var(--tx-2);line-height:1.8;margin:0}
.scene-thumb{width:84px;height:84px;border-radius:var(--r-sm);overflow:hidden;border:1px solid var(--line)}
.scene-thumb img{width:100%;height:100%;object-fit:cover}
.scene:hover .scene-thumb img{transform:scale(1.04)}
.scene-thumb img{transition:transform .35s var(--ease)}
@media screen and (max-width:639px){
  .scene{grid-template-columns:44px minmax(0,1fr);gap:14px;align-items:start}
  .scene-thumb{display:none}
  .scene-no{font-size:24px}
}

/* ---------- checklist ---------- */
.check-grid{display:grid;grid-template-columns:1fr;gap:16px}
@media screen and (min-width:768px){.check-grid{grid-template-columns:repeat(2,minmax(0,1fr))}}
.check-item{
  display:flex;gap:16px;background:var(--bg-2);border:1px solid var(--line);
  border-radius:var(--r-md);padding:22px;
  transition:border-color .18s var(--ease),transform .18s var(--ease);
}
.check-item:hover{border-color:rgba(255,107,74,.5);transform:translateY(-3px)}
.check-icon{
  flex:0 0 auto;width:38px;height:38px;border-radius:10px;
  display:flex;align-items:center;justify-content:center;
  background:rgba(255,107,74,.12);border:1px solid rgba(255,107,74,.34);
  color:var(--accent);font-size:15px;
}
.check-item h3{font-size:16.5px;margin-bottom:8px}
.check-item p{font-size:14.5px;color:var(--tx-2);line-height:1.8;margin:0}

/* ---------- faq ---------- */
.faq-wrap{max-width:860px}
.faq-acc{border:1px solid var(--line);border-radius:var(--r-md);overflow:hidden;background:var(--bg-2)}
.faq-acc .accordion-item{border-bottom:1px solid var(--line);background:transparent}
.faq-acc .accordion-item:last-child{border-bottom:0}
.faq-acc .accordion-title{
  display:flex;align-items:center;gap:14px;
  min-height:56px;padding:12px 20px;
  font-size:16px;font-weight:600;color:var(--tx-1);
  background:transparent;border:0;line-height:1.6;
}
.faq-acc .accordion-title::before{display:none !important}
.faq-acc .accordion-title:hover{background:rgba(255,255,255,.03);color:#fff}
.faq-q{
  flex:0 0 auto;width:26px;height:26px;border-radius:8px;
  display:inline-flex;align-items:center;justify-content:center;
  font-size:12.5px;font-weight:700;color:var(--brand);
  background:var(--brand-soft);border:1px solid rgba(59,224,200,.35);
}
.faq-acc .accordion-item.is-active .accordion-title{color:#fff}
.faq-acc .accordion-item.is-active .faq-q{background:var(--brand);color:#04120F;border-color:var(--brand)}
.faq-acc .accordion-content{
  background:rgba(255,255,255,.02);border:0 !important;padding:0 !important;
}
.faq-acc .accordion-content p{
  margin:0;padding:4px 24px 22px 60px;
  font-size:14.5px;color:var(--tx-2);line-height:1.85;
  border-left:2px solid var(--brand);
}
@media screen and (max-width:639px){
  .faq-acc .accordion-content p{padding:4px 18px 20px 46px}
  .faq-acc .accordion-title{font-size:15px;padding:12px 16px}
}

/* ---------- cta band ---------- */
.cta-band{
  position:relative;overflow:hidden;
  background-image:linear-gradient(120deg,rgba(5,7,12,.9),rgba(11,17,24,.94)),url('/assets/images/backpic/back-2.png');
  background-size:cover;background-position:center;
  border-top:1px solid var(--line);border-bottom:1px solid var(--line);
}
.cta-inner{
  display:grid;grid-template-columns:1fr;gap:24px;align-items:center;
  padding:48px 0;
}
@media screen and (min-width:1024px){
  .cta-inner{grid-template-columns:minmax(0,1fr) auto;gap:40px;padding:64px 0}
}
.cta-inner h2{font-size:clamp(20px,2.6vw,28px);margin-bottom:10px;line-height:1.4}
.cta-inner p{color:var(--tx-2);font-size:15px;margin:0}
.cta-actions{display:flex;flex-wrap:wrap;gap:12px}

/* ---------- footer ---------- */
.site-footer{
  position:relative;background:var(--bg-1);padding:56px 0 24px;
  border-top:1px solid transparent;
}
.site-footer::before{
  content:"";position:absolute;top:0;left:0;right:0;height:1px;
  background:linear-gradient(90deg,transparent,var(--brand),transparent);opacity:.7;
}
.footer-grid{row-gap:32px}
.footer-brand .logo{margin-bottom:14px}
.footer-brand p{font-size:14px;color:var(--tx-2);line-height:1.85;max-width:420px}
.footer-h{font-size:14px;letter-spacing:.06em;color:var(--tx-1);margin-bottom:14px}
.footer-col ul li{margin-bottom:10px}
.footer-col a{font-size:14px;color:var(--tx-2)}
.footer-col a:hover{color:var(--brand)}
.footer-note{font-size:13.5px;color:var(--tx-3);line-height:1.8;margin-bottom:10px}
.footer-bottom{
  display:flex;flex-wrap:wrap;justify-content:space-between;gap:10px;
  margin-top:40px;padding-top:20px;border-top:1px solid var(--line);
  font-size:13px;color:var(--tx-3);
}
@media screen and (max-width:639px){
  .footer-grid{margin-left:-0.625rem;margin-right:-0.625rem}
}

/* ---------- misc ---------- */
.divider{height:1px;background:linear-gradient(90deg,var(--brand),transparent);opacity:.6;margin:0}
.sr-only{position:absolute;width:1px;height:1px;padding:0;margin:-1px;overflow:hidden;clip:rect(0,0,0,0);white-space:nowrap;border:0}
@media (prefers-reduced-motion:reduce){
  *,*::before,*::after{animation-duration:.01ms !important;transition-duration:.01ms !important;scroll-behavior:auto !important}
}

/* roulang page: article */
:root{
  --bg-0:#05070C;
  --bg-1:#0B1118;
  --bg-2:#121A24;
  --brand:#3BE0C8;
  --brand-soft:rgba(59,224,200,.12);
  --accent:#FF6B4A;
  --line:rgba(255,255,255,.10);
  --glass:rgba(255,255,255,.06);
  --tx-1:#EAF2F6;
  --tx-2:#A9B7C2;
  --tx-3:#6E7D8A;
  --r-card:16px;
  --r-img:12px;
  --r-btn:12px;
  --shadow:0 18px 40px rgba(0,0,0,.45);
  --glow:0 8px 24px rgba(59,224,200,.35),0 0 0 1px rgba(59,224,200,.6);
  --container:1200px;
}
*,*::before,*::after{box-sizing:border-box}
html{-webkit-text-size-adjust:100%;scroll-behavior:smooth}
body{
  margin:0;
  font-family:"PingFang SC","HarmonyOS Sans SC","Microsoft YaHei",system-ui,-apple-system,"Segoe UI",sans-serif;
  font-size:16px;
  line-height:1.8;
  color:var(--tx-1);
  background-color:var(--bg-0);
  background-image:
    radial-gradient(620px 420px at 84% -10%,rgba(59,224,200,.14),transparent 70%),
    radial-gradient(520px 380px at 6% 18%,rgba(255,107,74,.08),transparent 72%),
    linear-gradient(rgba(255,255,255,.020) 1px,transparent 1px),
    linear-gradient(90deg,rgba(255,255,255,.020) 1px,transparent 1px);
  background-size:auto,auto,46px 46px,46px 46px;
  -webkit-font-smoothing:antialiased;
}
img{max-width:100%;height:auto;display:block;border-radius:var(--r-img)}
a{color:inherit;text-decoration:none;transition:color .18s ease,background .18s ease,border-color .18s ease}
a:focus-visible,button:focus-visible,input:focus-visible{outline:2px solid var(--brand);outline-offset:2px;border-radius:6px}
button{font:inherit;cursor:pointer}
h1,h2,h3,h4{margin:0 0 .6em;line-height:1.3;font-weight:700;letter-spacing:.01em}
p{margin:0 0 1em}
ul,ol{margin:0}
.container{width:100%;max-width:var(--container);margin:0 auto;padding:0 32px}
.section-title{position:relative;padding-left:16px;font-size:clamp(22px,3vw,32px);margin-bottom:14px}
.section-title::before{content:"";position:absolute;left:0;top:.2em;bottom:.2em;width:4px;border-radius:2px;background:var(--brand);box-shadow:0 0 12px rgba(59,224,200,.55)}
.section-lead{color:var(--tx-2);font-size:15px;max-width:720px;margin-bottom:32px}

/* ---------- Header ---------- */
.site-header{position:sticky;top:0;z-index:60;background:rgba(5,7,12,.86);backdrop-filter:blur(14px);-webkit-backdrop-filter:blur(14px);border-bottom:1px solid var(--line)}
.header-inner{display:flex;align-items:center;gap:24px;height:64px}
.logo{display:inline-flex;align-items:center;gap:10px}
.logo-mark{display:inline-flex;align-items:center;justify-content:center;width:38px;height:38px;border-radius:11px;background:linear-gradient(150deg,#5BEFD9,rgba(59,224,200,.55));color:#04211D;font-weight:700;font-size:13px;letter-spacing:.06em;box-shadow:0 6px 18px rgba(59,224,200,.28)}
.logo-text{font-size:16px;font-weight:600;white-space:nowrap}
.nav{flex:1 1 auto;display:flex;justify-content:center}
.nav-list{display:flex;align-items:center;gap:2px;list-style:none;padding:0}
.nav-link{position:relative;display:inline-flex;align-items:center;height:64px;padding:0 14px;font-size:15px;color:var(--tx-2)}
.nav-link::after{content:"";position:absolute;left:14px;right:14px;bottom:0;height:2px;border-radius:2px;background:var(--brand);opacity:0;transition:opacity .18s ease,box-shadow .18s ease}
.nav-link:hover{color:var(--tx-1)}
.nav-link:hover::after{opacity:.45}
.nav-link.is-active{color:var(--tx-1)}
.nav-link.is-active::after{opacity:1;box-shadow:0 0 14px rgba(59,224,200,.85)}
.header-actions{display:flex;align-items:center;gap:12px;flex:0 0 auto}
.nav-toggle{display:none;align-items:center;justify-content:center;width:40px;height:40px;border-radius:10px;background:var(--glass);border:1px solid var(--line);color:var(--tx-1)}
.nav-toggle:hover{border-color:var(--brand);color:var(--brand)}
.nav-drawer{position:fixed;left:0;right:0;top:56px;bottom:0;z-index:55;display:none;padding:8px 20px 40px;overflow-y:auto;background:rgba(5,7,12,.98);backdrop-filter:blur(16px);-webkit-backdrop-filter:blur(16px);border-top:1px solid var(--line)}
.nav-drawer.is-open{display:block}
.drawer-link{display:flex;align-items:center;justify-content:space-between;height:48px;border-bottom:1px solid var(--line);font-size:16px;color:var(--tx-1)}
.drawer-link i{color:var(--tx-3);font-size:13px}
.drawer-link.is-active{color:var(--brand)}
.drawer-cta{margin-top:22px;width:100%}

/* ---------- Buttons / badges ---------- */
.btn{display:inline-flex;align-items:center;justify-content:center;gap:8px;padding:12px 22px;border-radius:var(--r-btn);border:1px solid transparent;font-size:15px;font-weight:600;transition:transform .18s cubic-bezier(.2,.7,.3,1),box-shadow .18s,background .18s,color .18s,border-color .18s}
.btn-primary{background:var(--brand);color:#04211D;box-shadow:var(--glow)}
.btn-primary:hover{background:#50EFD9;color:#04211D;transform:translateY(-2px);box-shadow:0 14px 32px rgba(59,224,200,.45),0 0 0 1px rgba(59,224,200,.75)}
.btn-primary:active{transform:translateY(0)}
.btn-ghost{background:var(--glass);border-color:var(--line);color:var(--tx-1)}
.btn-ghost:hover{border-color:var(--brand);color:var(--brand);transform:translateY(-2px)}
.btn-sm{padding:9px 16px;font-size:14px}
.badge{display:inline-flex;align-items:center;gap:6px;padding:4px 12px;border-radius:999px;border:1px solid rgba(59,224,200,.45);background:rgba(59,224,200,.08);color:var(--brand);font-size:12px;letter-spacing:.04em}
.badge-accent{border-color:rgba(255,107,74,.45);background:rgba(255,107,74,.10);color:var(--accent)}

/* ---------- Article hero ---------- */
.article-hero{position:relative;padding:44px 0 52px;border-bottom:1px solid var(--line);background-image:linear-gradient(180deg,rgba(5,7,12,.72),rgba(5,7,12,.96)),url('/assets/images/backpic/back-2.png');background-size:cover;background-position:center}
.crumb{font-size:13px}
.crumb-list{display:flex;flex-wrap:wrap;align-items:center;gap:8px;list-style:none;padding:0;margin:0 0 26px;color:var(--tx-3)}
.crumb-list a{color:var(--tx-2)}
.crumb-list a:hover{color:var(--brand)}
.crumb-list .sep{color:var(--tx-3)}
.crumb-list .current{color:var(--tx-1);max-width:60ch;overflow:hidden;text-overflow:ellipsis;white-space:nowrap}
.article-head h1{font-size:clamp(26px,4vw,42px);line-height:1.25;margin:16px 0 18px;max-width:20ch}
.meta-row{display:flex;flex-wrap:wrap;gap:18px;font-size:13px;color:var(--tx-3)}
.meta-row span{display:inline-flex;align-items:center;gap:7px}
.meta-row i{color:var(--brand)}

/* ---------- Article layout ---------- */
.article-section{padding:72px 0 88px}
.article-layout{display:grid;grid-template-columns:minmax(0,1fr) 260px;gap:56px;align-items:start}
.article-main{min-width:0}
.article-body{max-width:760px;font-size:16.5px;line-height:1.85;color:#D8E3EA}
.article-body h2{position:relative;margin:2.2em 0 .85em;padding-left:16px;font-size:clamp(20px,2.6vw,28px);color:var(--tx-1)}
.article-body h2::before{content:"";position:absolute;left:0;top:.16em;bottom:.16em;width:4px;border-radius:2px;background:var(--brand);box-shadow:0 0 12px rgba(59,224,200,.55)}
.article-body h3{font-size:19px;margin:1.7em 0 .6em;color:var(--tx-1)}
.article-body p{margin:0 0 1.1em}
.article-body ul,.article-body ol{padding-left:1.45em;margin:0 0 1.2em}
.article-body li{margin-bottom:.5em}
.article-body blockquote{margin:1.7em 0;padding:16px 22px;background:var(--glass);border-left:3px solid var(--brand);border-radius:0 12px 12px 0;color:var(--tx-2);backdrop-filter:blur(10px);-webkit-backdrop-filter:blur(10px)}
.article-body blockquote p:last-child{margin-bottom:0}
.article-body img{margin:1.5em auto}
.article-body figure{margin:1.7em 0}
.article-body figcaption{text-align:center;font-size:13px;color:var(--tx-3);margin-top:.7em}
.article-body table{width:100%;border-collapse:collapse;margin:1.7em 0;font-size:15px;border-radius:12px;overflow:hidden}
.article-body th,.article-body td{padding:12px 14px;border-bottom:1px solid var(--line);text-align:left}
.article-body thead th{background:var(--bg-2);color:var(--tx-1)}
.article-body tbody tr:nth-child(even){background:rgba(255,255,255,.022)}
.article-body a{color:var(--brand);text-decoration:underline;text-decoration-color:rgba(59,224,200,.4);text-underline-offset:3px}
.article-body a:hover{text-decoration-color:var(--brand)}
.article-body code{background:var(--bg-2);padding:2px 7px;border-radius:6px;font-size:.92em;color:#9FE8DB}
.article-body hr{border:0;border-top:1px dashed var(--line);margin:2.2em 0}
.toc-aside{position:relative}
.toc{position:sticky;top:88px;padding:20px;border:1px solid var(--line);border-radius:var(--r-card);background:var(--glass);backdrop-filter:blur(14px);-webkit-backdrop-filter:blur(14px)}
.toc h2{font-size:13px;letter-spacing:.1em;color:var(--tx-3);margin:0 0 14px;font-weight:600}
.toc ol{list-style:none;padding:0;margin:0}
.toc li{margin-bottom:4px}
.toc a{display:block;padding:7px 10px;border-left:2px solid transparent;border-radius:8px;font-size:14px;line-height:1.5;color:var(--tx-2)}
.toc a:hover{color:var(--tx-1);background:rgba(255,255,255,.04)}
.toc a.is-current{color:var(--brand);border-left-color:var(--brand);background:var(--brand-soft)}
.toc-hint{font-size:13px;color:var(--tx-3);margin:0}
.empty-state{max-width:760px;padding:48px 32px;border:1px dashed var(--line);border-radius:var(--r-card);text-align:center;background:var(--bg-1)}
.empty-title{font-size:20px;font-weight:700;margin-bottom:8px}
.empty-desc{color:var(--tx-2);font-size:15px;margin-bottom:22px}

/* ---------- Tags & actions ---------- */
.tag-row{display:flex;flex-wrap:wrap;align-items:center;gap:10px;max-width:760px;margin-top:44px;padding-top:24px;border-top:1px dashed var(--line)}
.tag-label{font-size:13px;letter-spacing:.08em;color:var(--tx-3);margin-right:4px}
.tag{display:inline-flex;padding:6px 14px;border-radius:999px;border:1px solid var(--line);background:var(--glass);font-size:13px;color:var(--tx-2)}
.tag:hover{border-color:var(--brand);color:var(--brand);transform:translateY(-2px)}
.back-actions{display:flex;flex-wrap:wrap;gap:14px;max-width:760px;margin-top:36px}

/* ---------- Related ---------- */
.rel-section{padding:80px 0 88px;background:var(--bg-1);border-top:1px solid var(--line)}
.rel-track{display:grid;grid-auto-flow:column;grid-auto-columns:calc((100% - 60px) / 4);gap:20px;overflow-x:auto;scroll-snap-type:x mandatory;padding-bottom:10px;scrollbar-width:thin}
.rel-card{scroll-snap-align:start;display:flex;flex-direction:column;background:var(--bg-2);border:1px solid var(--line);border-radius:var(--r-card);overflow:hidden;transition:transform .18s cubic-bezier(.2,.7,.3,1),border-color .18s,box-shadow .18s}
.rel-card:hover{transform:translateY(-4px);border-color:var(--brand);box-shadow:var(--shadow)}
.rel-thumb{position:relative;aspect-ratio:3/4;overflow:hidden}
.rel-thumb img{width:100%;height:100%;object-fit:cover;border-radius:0;transition:transform .3s ease}
.rel-card:hover .rel-thumb img{transform:scale(1.05)}
.rel-thumb::after{content:"";position:absolute;inset:0;background:linear-gradient(180deg,transparent 45%,rgba(5,7,12,.85))}
.rel-tag{position:absolute;left:12px;top:12px;z-index:2}
.rel-body{padding:16px 18px 20px}
.rel-body h3{font-size:16px;line-height:1.5;margin:0 0 8px;display:-webkit-box;-webkit-line-clamp:2;-webkit-box-orient:vertical;overflow:hidden}
.rel-body p{font-size:13px;color:var(--tx-3);margin:0}

/* ---------- CTA band ---------- */
.cta-band{padding:72px 0;border-top:1px solid var(--line);background-image:linear-gradient(120deg,rgba(59,224,200,.10),rgba(255,107,74,.07)),url('/assets/images/backpic/back-3.webp');background-size:cover;background-position:center}
.cta-inner{display:flex;flex-wrap:wrap;align-items:center;justify-content:space-between;gap:26px}
.cta-inner h2{font-size:clamp(21px,2.8vw,30px);margin:0 0 10px}
.cta-inner p{color:var(--tx-2);font-size:15px;margin:0;max-width:640px}

/* ---------- Footer ---------- */
.site-footer{position:relative;padding:64px 0 28px;background:var(--bg-0);font-size:14px}
.site-footer::before{content:"";position:absolute;top:0;left:0;right:0;height:1px;background:linear-gradient(90deg,transparent,var(--brand),transparent)}
.footer-grid{row-gap:34px}
.footer-brand .logo{margin-bottom:16px}
.footer-brand p{color:var(--tx-2);font-size:14px;line-height:1.85;max-width:340px}
.footer-h{font-size:14px;letter-spacing:.06em;margin:0 0 14px}
.footer-col ul{list-style:none;padding:0}
.footer-col li{margin-bottom:10px}
.footer-col a{color:var(--tx-2);font-size:14px}
.footer-col a:hover{color:var(--brand)}
.footer-note{color:var(--tx-3);font-size:13px;line-height:1.8;margin:0 0 10px}
.footer-bottom{display:flex;flex-wrap:wrap;gap:12px;justify-content:space-between;margin-top:42px;padding-top:20px;border-top:1px solid var(--line);color:var(--tx-3);font-size:13px}

/* ---------- Responsive ---------- */
@media (max-width:1023px){
  .nav{display:none}
  .nav-toggle{display:inline-flex}
  .header-actions .btn-primary{display:none}
  .article-layout{grid-template-columns:1fr;gap:36px}
  .toc-aside{display:none}
  .rel-track{grid-auto-columns:minmax(240px,1fr)}
}
@media (min-width:1024px){
  .nav-drawer{display:none !important}
}
@media (max-width:640px){
  .container{padding:0 20px}
  .header-inner{height:56px;gap:12px}
  .logo-text{font-size:15px;max-width:52vw;overflow:hidden;text-overflow:ellipsis}
  .article-hero{padding:30px 0 38px}
  .article-section{padding:48px 0 60px}
  .rel-section,.cta-band{padding:52px 0}
  .crumb-list .current{white-space:normal;max-width:100%}
  .rel-track{grid-auto-columns:78vw}
  .back-actions .btn{flex:1 1 100%}
}
@media (prefers-reduced-motion:reduce){
  *{transition:none !important;animation:none !important;scroll-behavior:auto !important}
}

/* roulang page: category2 */
:root{
  --bg-0:#05070C;
  --bg-1:#0B1118;
  --bg-2:#121A24;
  --brand:#3BE0C8;
  --brand-soft:rgba(59,224,200,.12);
  --brand-line:rgba(59,224,200,.45);
  --accent:#FF6B4A;
  --accent-soft:rgba(255,107,74,.14);
  --line:rgba(255,255,255,.10);
  --glass:rgba(255,255,255,.06);
  --tx-1:#EAF2F6;
  --tx-2:#A9B7C2;
  --tx-3:#6E7D8A;
  --r-lg:16px;
  --r-md:12px;
  --r-sm:8px;
  --r-pill:999px;
  --shadow-card:0 18px 40px rgba(0,0,0,.45);
  --shadow-glow:0 8px 24px rgba(59,224,200,.35);
  --ease:cubic-bezier(.2,.7,.3,1);
  --s1:8px; --s2:16px; --s3:24px; --s4:32px; --s5:48px; --s6:64px; --s7:88px;
}
*,*::before,*::after{box-sizing:border-box;}
html{-webkit-text-size-adjust:100%;scroll-behavior:smooth;}
body{
  margin:0;
  background:var(--bg-0);
  color:var(--tx-1);
  font-family:"PingFang SC","HarmonyOS Sans SC","Microsoft YaHei",system-ui,-apple-system,"Segoe UI",sans-serif;
  font-size:16px;
  line-height:1.8;
  letter-spacing:.01em;
  -webkit-font-smoothing:antialiased;
}
img{max-width:100%;height:auto;display:block;border-radius:var(--r-md);}
a{color:var(--tx-1);text-decoration:none;transition:color .18s var(--ease),background-color .18s var(--ease),border-color .18s var(--ease);}
a:hover{color:var(--brand);}
p{margin:0 0 1em;}
h1,h2,h3,h4{margin:0;font-weight:700;letter-spacing:.01em;color:var(--tx-1);}
ul,ol{margin:0;padding:0;list-style:none;}
button{font-family:inherit;}
:focus-visible{outline:2px solid var(--brand);outline-offset:3px;border-radius:6px;}
::selection{background:rgba(59,224,200,.3);color:#fff;}

/* ---------- 布局容器 ---------- */
.container{
  width:100%;
  max-width:1200px;
  margin:0 auto;
  padding:0 20px;
}
@media screen and (min-width:1024px){
  .container{padding:0 32px;}
}
.section{padding:var(--s5) 0;}
@media screen and (min-width:640px){ .section{padding:var(--s6) 0;} }
@media screen and (min-width:1024px){ .section{padding:var(--s7) 0;} }
.section--alt{background:var(--bg-1);border-top:1px solid var(--line);border-bottom:1px solid var(--line);}
.section-head{max-width:760px;margin-bottom:var(--s4);}
.section-head h2{
  font-size:clamp(22px,3vw,32px);
  line-height:1.3;
  padding-left:14px;
  border-left:4px solid var(--brand);
  position:relative;
}
.section-head .eyebrow{
  display:inline-block;
  font-size:12px;
  letter-spacing:.14em;
  color:var(--brand);
  border:1px solid var(--brand-line);
  border-radius:var(--r-pill);
  padding:2px 12px;
  margin-bottom:12px;
}
.section-head p{margin-top:14px;color:var(--tx-2);font-size:15px;}

/* ---------- 顶栏 ---------- */
.site-header{
  position:sticky;
  top:0;
  z-index:60;
  background:rgba(5,7,12,.86);
  backdrop-filter:blur(14px);
  -webkit-backdrop-filter:blur(14px);
  border-bottom:1px solid var(--line);
}
.header-inner{
  display:flex;
  align-items:center;
  justify-content:space-between;
  gap:var(--s2);
  min-height:56px;
}
@media screen and (min-width:1024px){
  .header-inner{min-height:64px;}
}
.logo{display:inline-flex;align-items:center;gap:10px;flex:0 0 auto;}
.logo-mark{
  display:inline-flex;align-items:center;justify-content:center;
  width:34px;height:34px;border-radius:10px;
  background:linear-gradient(135deg,rgba(59,224,200,.9),rgba(59,224,200,.35));
  color:#04140f;font-weight:800;font-size:13px;letter-spacing:.04em;
  box-shadow:0 6px 18px rgba(59,224,200,.28);
}
.logo-text{
  font-size:15px;font-weight:700;color:var(--tx-1);letter-spacing:.02em;
  max-width:150px;overflow:hidden;text-overflow:ellipsis;white-space:nowrap;
}
@media screen and (min-width:640px){
  .logo-text{max-width:none;font-size:16px;}
}
.nav{display:none;}
.nav-list{display:flex;align-items:center;gap:6px;}
.nav-link{
  position:relative;
  display:inline-block;
  padding:8px 12px;
  font-size:15px;
  color:var(--tx-2);
  border-radius:var(--r-sm);
}
.nav-link:hover{color:var(--tx-1);background:var(--glass);}
.nav-link.is-active{color:var(--tx-1);font-weight:600;}
.nav-link.is-active::after{
  content:"";
  position:absolute;left:12px;right:12px;bottom:0;
  height:2px;border-radius:2px;
  background:var(--brand);
  box-shadow:0 0 10px rgba(59,224,200,.85);
}
.header-actions{display:flex;align-items:center;gap:10px;}
.nav-toggle{
  display:inline-flex;flex-direction:column;justify-content:center;gap:5px;
  width:40px;height:40px;padding:0;border:1px solid var(--line);
  background:var(--glass);border-radius:10px;cursor:pointer;
}
.nav-toggle span{display:block;height:2px;width:18px;margin:0 auto;background:var(--tx-2);border-radius:2px;transition:transform .2s var(--ease),opacity .2s var(--ease);}
.nav-toggle.is-open span:nth-child(1){transform:translateY(7px) rotate(45deg);background:var(--brand);}
.nav-toggle.is-open span:nth-child(2){opacity:0;}
.nav-toggle.is-open span:nth-child(3){transform:translateY(-7px) rotate(-45deg);background:var(--brand);}
@media screen and (min-width:1024px){
  .nav{display:block;}
  .nav-toggle{display:none;}
}
@media screen and (max-width:1023.98px){
  .nav{
    display:block;
    position:absolute;
    left:0;right:0;top:100%;
    background:rgba(5,7,12,.98);
    backdrop-filter:blur(14px);
    border-bottom:1px solid var(--line);
    max-height:0;
    overflow:hidden;
    transition:max-height .3s var(--ease);
  }
  .nav.is-open{max-height:340px;}
  .nav-list{flex-direction:column;align-items:stretch;gap:0;padding:6px 20px 14px;}
  .nav-list li{border-bottom:1px solid var(--line);}
  .nav-list li:last-child{border-bottom:none;}
  .nav-link{display:flex;align-items:center;height:48px;padding:0;font-size:16px;border-radius:0;}
  .nav-link.is-active::after{left:0;right:auto;width:3px;height:22px;bottom:13px;box-shadow:0 0 10px rgba(59,224,200,.85);}
}

/* ---------- 按钮 ---------- */
.btn{
  display:inline-flex;align-items:center;justify-content:center;gap:8px;
  padding:12px 24px;
  font-size:15px;font-weight:600;
  border-radius:var(--r-md);
  border:1px solid transparent;
  cursor:pointer;
  transition:transform .18s var(--ease),box-shadow .18s var(--ease),background-color .18s var(--ease),color .18s var(--ease),border-color .18s var(--ease);
  white-space:nowrap;
}
.btn-primary{
  background:linear-gradient(135deg,#3BE0C8,#2BB9A6);
  color:#04140f;
  box-shadow:var(--shadow-glow),0 0 0 1px rgba(59,224,200,.6);
}
.btn-primary:hover,.btn-primary:focus{
  color:#04140f;
  filter:brightness(1.08);
  transform:translateY(-2px);
  box-shadow:0 14px 32px rgba(59,224,200,.45),0 0 0 1px rgba(59,224,200,.75);
}
.btn-ghost{
  background:var(--glass);
  color:var(--tx-1);
  border-color:var(--line);
}
.btn-ghost:hover,.btn-ghost:focus{
  color:var(--brand);
  border-color:var(--brand-line);
  transform:translateY(-2px);
}
.btn-sm{padding:9px 16px;font-size:14px;}
.btn:active{transform:translateY(0) scale(.98);}
.header-cta{display:none;}
@media screen and (min-width:768px){
  .header-cta{display:inline-flex;}
}

/* ---------- 内页 Hero ---------- */
.page-hero{
  position:relative;
  overflow:hidden;
  padding:var(--s5) 0 var(--s4);
  background-image:
    linear-gradient(180deg,rgba(5,7,12,.72),rgba(5,7,12,.94)),
    url('/assets/images/backpic/back-1.png');
  background-size:cover;
  background-position:center;
  border-bottom:1px solid var(--line);
}
.page-hero::after{
  content:"";
  position:absolute;right:-120px;top:-120px;width:420px;height:420px;
  background:radial-gradient(circle,rgba(59,224,200,.20),transparent 68%);
  pointer-events:none;
}
@media screen and (min-width:1024px){
  .page-hero{padding:var(--s6) 0 var(--s5);}
}
.breadcrumb{
  display:flex;flex-wrap:wrap;align-items:center;gap:8px;
  font-size:13px;color:var(--tx-3);margin-bottom:20px;
}
.breadcrumb a{color:var(--tx-2);}
.breadcrumb a:hover{color:var(--brand);}
.breadcrumb .sep{color:var(--tx-3);}
.hero-tag{
  display:inline-flex;align-items:center;gap:8px;
  font-size:12px;letter-spacing:.08em;
  color:var(--accent);
  background:var(--accent-soft);
  border:1px solid rgba(255,107,74,.35);
  border-radius:var(--r-pill);
  padding:4px 14px;
  margin-bottom:18px;
}
.hero-tag i{font-size:8px;}
.page-hero h1{
  font-size:clamp(28px,4.2vw,44px);
  line-height:1.2;
  font-weight:700;
  max-width:16em;
}
.page-hero .hero-sub{
  margin-top:18px;
  max-width:720px;
  color:var(--tx-2);
  font-size:16px;
}
.hero-actions{display:flex;flex-wrap:wrap;gap:12px;margin-top:28px;}
.hero-stats{
  display:grid;
  grid-template-columns:repeat(3,1fr);
  gap:12px;
  margin-top:32px;
  max-width:640px;
}
.stat-card{
  background:var(--glass);
  border:1px solid var(--line);
  border-radius:var(--r-md);
  padding:14px 12px;
  backdrop-filter:blur(14px);
  -webkit-backdrop-filter:blur(14px);
}
.stat-card b{
  display:block;
  font-size:clamp(18px,3vw,24px);
  color:var(--brand);
  font-weight:700;
  letter-spacing:.02em;
}
.stat-card span{display:block;font-size:12px;color:var(--tx-3);letter-spacing:.04em;margin-top:4px;}

/* ---------- 速览标签 Tabs ---------- */
.tabs-wrap{margin-top:var(--s3);}
ul.tabs{
  display:flex;flex-wrap:wrap;gap:10px;
  border:none;background:transparent;margin:0 0 var(--s3);
}
ul.tabs::before,ul.tabs::after{display:none;}
.tabs-title{float:none;}
.tabs-title > a{
  display:inline-flex;align-items:center;gap:8px;
  padding:9px 18px;
  font-size:14px;font-weight:600;
  color:var(--tx-2);
  background:var(--glass);
  border:1px solid var(--line);
  border-radius:var(--r-pill);
  transition:all .18s var(--ease);
}
.tabs-title > a:hover{color:var(--tx-1);border-color:var(--brand-line);}
.tabs-title.is-active > a,
.tabs-title > a[aria-selected="true"]{
  color:var(--brand);
  background:var(--brand-soft);
  border-color:var(--brand-line);
  box-shadow:0 6px 20px rgba(59,224,200,.18);
}
.tabs-content{border:none;background:transparent;}
.tabs-panel{padding:0;}
.tabs-panel[aria-hidden="true"]{display:none;}
.speed-panel{
  display:grid;
  grid-template-columns:1fr;
  gap:var(--s3);
  background:var(--bg-2);
  border:1px solid var(--line);
  border-radius:var(--r-lg);
  padding:var(--s3);
  box-shadow:var(--shadow-card);
}
@media screen and (min-width:768px){
  .speed-panel{grid-template-columns:1.15fr .85fr;align-items:center;padding:var(--s4);}
}
.speed-panel h3{font-size:19px;margin-bottom:12px;color:var(--tx-1);}
.speed-panel p{color:var(--tx-2);font-size:15px;margin-bottom:14px;}
.point-list li{
  position:relative;
  padding-left:20px;
  color:var(--tx-2);
  font-size:14.5px;
  line-height:1.85;
}
.point-list li::before{
  content:"";
  position:absolute;left:0;top:12px;
  width:8px;height:8px;border-radius:2px;
  background:var(--brand);
  box-shadow:0 0 8px rgba(59,224,200,.6);
}
.speed-panel figure{margin:0;}
.speed-panel img{
  width:100%;
  aspect-ratio:4/3;
  object-fit:cover;
  border:1px solid var(--line);
}

/* ---------- 时间轴 ---------- */
.timeline{position:relative;margin-top:var(--s2);}
.timeline::before{
  content:"";
  position:absolute;left:110px;top:14px;bottom:14px;width:2px;
  background:linear-gradient(180deg,rgba(59,224,200,.55),rgba(59,224,200,.06));
}
.tl-item{
  position:relative;
  display:grid;
  grid-template-columns:96px 1fr;
  gap:var(--s3);
  padding-bottom:var(--s4);
}
.tl-item:last-child{padding-bottom:0;}
.tl-item::after{
  content:"";
  position:absolute;left:104px;top:12px;
  width:14px;height:14px;border-radius:50%;
  background:var(--brand);
  box-shadow:0 0 0 4px rgba(59,224,200,.16),0 0 14px rgba(59,224,200,.7);
}
.tl-date{padding-top:4px;}
.date-badge{
  display:inline-block;
  font-size:12px;
  letter-spacing:.06em;
  font-weight:600;
  color:var(--accent);
  background:var(--accent-soft);
  border:1px solid rgba(255,107,74,.32);
  border-radius:var(--r-sm);
  padding:3px 10px;
  white-space:nowrap;
}
.tl-card{
  background:var(--bg-2);
  border:1px solid var(--line);
  border-radius:var(--r-lg);
  padding:var(--s3);
  box-shadow:var(--shadow-card);
  transition:transform .18s var(--ease),border-color .18s var(--ease);
}
.tl-card:hover{transform:translateY(-4px);border-color:var(--brand-line);}
.tl-card h3{font-size:18px;margin:10px 0 10px;}
.tl-card p{color:var(--tx-2);font-size:14.5px;margin-bottom:12px;}
.tl-meta{color:var(--tx-3);font-size:13px;margin-bottom:0;}
@media screen and (max-width:639.98px){
  .timeline::before{left:6px;}
  .tl-item{grid-template-columns:1fr;gap:12px;padding-left:28px;}
  .tl-item::after{left:0;top:8px;}
}

/* ---------- 标签 ---------- */
.badge{
  display:inline-block;
  font-size:12px;
  letter-spacing:.04em;
  padding:3px 10px;
  border-radius:var(--r-pill);
  border:1px solid var(--brand-line);
  color:var(--brand);
  background:var(--brand-soft);
}
.badge--warm{
  color:var(--accent);
  border-color:rgba(255,107,74,.35);
  background:var(--accent-soft);
}
.badge-row{display:flex;flex-wrap:wrap;gap:8px;}

/* ---------- 挑选建议（编号清单） ---------- */
.pick-list{margin-top:var(--s2);}
.pick-item{
  display:grid;
  grid-template-columns:72px 1fr 88px;
  gap:var(--s2);
  align-items:center;
  padding:var(--s3) 0;
  border-bottom:1px dashed var(--line);
}
.pick-item:first-child{border-top:1px dashed var(--line);}
.pick-num{
  font-size:clamp(30px,5vw,44px);
  font-weight:800;
  line-height:1;
  color:transparent;
  -webkit-text-stroke:1.5px rgba(59,224,200,.85);
  letter-spacing:.02em;
}
.pick-body h3{font-size:17px;margin-bottom:6px;}
.pick-body p{color:var(--tx-2);font-size:14.5px;margin:0;}
.pick-thumb{
  width:88px;height:88px;object-fit:cover;
  border-radius:var(--r-md);
  border:1px solid var(--line);
}
@media screen and (max-width:639.98px){
  .pick-item{grid-template-columns:52px 1fr;gap:14px;}
  .pick-thumb{display:none;}
}

/* ---------- 口碑横滑 ---------- */
.voice-rail{
  display:flex;
  gap:14px;
  overflow-x:auto;
  padding:6px 4px 18px;
  scroll-snap-type:x mandatory;
  -webkit-overflow-scrolling:touch;
  scrollbar-width:thin;
}
.voice-rail::-webkit-scrollbar{height:6px;}
.voice-rail::-webkit-scrollbar-thumb{background:var(--glass);border-radius:99px;}
.voice-card{
  flex:0 0 78vw;
  scroll-snap-align:start;
  display:flex;align-items:center;gap:12px;
  background:var(--glass);
  border:1px solid var(--line);
  border-radius:var(--r-md);
  padding:12px 16px;
  backdrop-filter:blur(14px);
  -webkit-backdrop-filter:blur(14px);
  min-height:76px;
}
@media screen and (min-width:640px){ .voice-card{flex:0 0 44%;} }
@media screen and (min-width:1024px){ .voice-card{flex:0 0 31.5%;} }
.voice-avatar{
  flex:0 0 auto;
  width:40px;height:40px;border-radius:50%;
  display:flex;align-items:center;justify-content:center;
  background:linear-gradient(135deg,rgba(59,224,200,.85),rgba(59,224,200,.25));
  color:#04140f;font-weight:700;font-size:14px;
}
.voice-main{min-width:0;}
.voice-name{font-size:13px;color:var(--tx-3);margin-bottom:2px;}
.voice-text{
  font-size:14px;color:var(--tx-1);
  white-space:nowrap;overflow:hidden;text-overflow:ellipsis;
  margin:0;
}
.voice-stars{color:var(--accent);font-size:11px;letter-spacing:2px;margin-top:2px;}

/* ---------- FAQ ---------- */
.faq{margin-top:var(--s3);}
.faq ul.accordion{
  background:transparent;
  border:none;
  margin:0;
}
.faq .accordion-item{
  background:var(--bg-2);
  border:1px solid var(--line);
  border-radius:var(--r-lg);
  margin-bottom:12px;
  overflow:hidden;
  transition:border-color .18s var(--ease);
}
.faq .accordion-item.is-active{border-color:var(--brand-line);}
.faq .accordion-title{
  display:flex;align-items:center;gap:12px;
  min-height:56px;
  padding:0 52px 0 20px;
  margin:0;
  font-size:16px;font-weight:600;
  color:var(--tx-1);
  background:transparent;
  border:none;
  position:relative;
}
.faq .accordion-title:hover{background:rgba(255,255,255,.03);color:var(--brand);}
.faq .accordion-title:focus{background:rgba(255,255,255,.04);}
.faq .accordion-title::before{
  content:"＋";
  position:absolute;right:20px;top:50%;
  transform:translateY(-50%);
  font-size:16px;color:var(--brand);margin:0;
}
.faq .accordion-title[aria-expanded="true"]::before{content:"－";}
.faq .q-mark{
  flex:0 0 auto;
  width:24px;height:24px;border-radius:50%;
  display:inline-flex;align-items:center;justify-content:center;
  font-size:12px;font-weight:700;
  color:var(--brand);
  border:1px solid var(--brand-line);
  background:var(--brand-soft);
}
.faq .accordion-content{
  background:transparent;
  border:none;
  padding:0 24px 20px 56px;
  color:var(--tx-2);
  font-size:14.5px;
  position:relative;
}
.faq .accordion-content::before{
  content:"";
  position:absolute;left:32px;top:2px;bottom:20px;width:2px;
  background:var(--brand-line);
  border-radius:2px;
}

/* ---------- CTA ---------- */
.cta-band{
  position:relative;
  overflow:hidden;
  background:linear-gradient(135deg,rgba(59,224,200,.10),rgba(255,107,74,.06)),var(--bg-1);
  border:1px solid var(--line);
  border-radius:var(--r-lg);
  padding:var(--s4) var(--s3);
  text-align:center;
  box-shadow:var(--shadow-card);
}
.cta-band::after{
  content:"";
  position:absolute;left:50%;top:-60px;transform:translateX(-50%);
  width:360px;height:200px;
  background:radial-gradient(ellipse,rgba(59,224,200,.22),transparent 70%);
  pointer-events:none;
}
.cta-band h2{
  font-size:clamp(22px,3vw,30px);
  border:none;padding:0;position:relative;z-index:1;
}
.cta-band p{color:var(--tx-2);max-width:640px;margin:14px auto 24px;position:relative;z-index:1;}
.cta-actions{display:flex;flex-wrap:wrap;gap:12px;justify-content:center;position:relative;z-index:1;}

/* ---------- 页脚 ---------- */
.site-footer{
  background:var(--bg-0);
  border-top:1px solid var(--line);
  position:relative;
  padding-top:var(--s5);
}
.site-footer::before{
  content:"";
  position:absolute;left:0;right:0;top:0;height:2px;
  background:linear-gradient(90deg,transparent,rgba(59,224,200,.8),transparent);
}
.footer-grid{padding-bottom:var(--s4);}
.footer-brand .logo{margin-bottom:16px;}
.footer-brand p{color:var(--tx-2);font-size:14px;max-width:420px;}
.footer-col{margin-bottom:var(--s3);}
.footer-h{
  font-size:14px;font-weight:700;color:var(--tx-1);
  letter-spacing:.06em;margin-bottom:14px;
}
.footer-col ul li{margin-bottom:10px;}
.footer-col ul a{color:var(--tx-2);font-size:14px;}
.footer-col ul a:hover{color:var(--brand);}
.footer-note{color:var(--tx-3);font-size:13px;margin-bottom:8px;}
.footer-bottom{
  display:flex;flex-wrap:wrap;gap:10px;
  justify-content:space-between;
  padding:18px 0 24px;
  border-top:1px solid var(--line);
  color:var(--tx-3);
  font-size:13px;
}

/* ---------- 移动端底部操作条 ---------- */
.mobile-bar{
  position:fixed;
  left:0;right:0;bottom:0;
  z-index:70;
  display:flex;align-items:center;justify-content:space-between;gap:12px;
  height:56px;
  padding:0 14px calc(0px + env(safe-area-inset-bottom));
  background:rgba(5,7,12,.94);
  backdrop-filter:blur(14px);
  -webkit-backdrop-filter:blur(14px);
  border-top:1px solid var(--line);
  opacity:0;transform:translateY(100%);
  transition:opacity .25s var(--ease),transform .25s var(--ease);
  pointer-events:none;
}
.mobile-bar.is-visible{opacity:1;transform:translateY(0);pointer-events:auto;}
.mobile-bar .bar-text{font-size:13px;color:var(--tx-2);}
@media screen and (min-width:1024px){
  .mobile-bar{display:none;}
}
@media screen and (max-width:1023.98px){
  body{padding-bottom:calc(56px + env(safe-area-inset-bottom));}
}

/* ---------- 动效偏好 ---------- */
@media (prefers-reduced-motion:reduce){
  *{animation:none !important;transition:none !important;scroll-behavior:auto !important;}
}

/* roulang page: category3 */
:root{
  --bg-0:#05070C;
  --bg-1:#0B1118;
  --bg-2:#121A24;
  --brand:#3BE0C8;
  --brand-soft:rgba(59,224,200,.14);
  --brand-line:rgba(59,224,200,.42);
  --accent:#FF6B4A;
  --accent-soft:rgba(255,107,74,.14);
  --line:rgba(255,255,255,.10);
  --line-strong:rgba(255,255,255,.18);
  --glass:rgba(255,255,255,.06);
  --tx-1:#EAF2F6;
  --tx-2:#A9B7C2;
  --tx-3:#6E7D8A;
  --r-card:16px;
  --r-img:12px;
  --r-btn:12px;
  --sh-card:0 18px 40px rgba(0,0,0,.45);
  --sh-btn:0 8px 24px rgba(59,224,200,.35);
  --maxw:1200px;
  --ease:cubic-bezier(.2,.7,.3,1);
}
*,*::before,*::after{box-sizing:border-box;}
html{-webkit-text-size-adjust:100%;scroll-behavior:smooth;}
body{
  margin:0;
  background:var(--bg-0);
  color:var(--tx-1);
  font-family:"PingFang SC","HarmonyOS Sans SC","Microsoft YaHei",system-ui,-apple-system,"Segoe UI",sans-serif;
  font-size:16px;
  line-height:1.8;
  overflow-x:hidden;
}
body.no-scroll{overflow:hidden;}
img{max-width:100%;display:block;border-style:none;}
a{color:inherit;text-decoration:none;}
button{font-family:inherit;}
h1,h2,h3,h4,p,ul,ol,figure,blockquote{margin:0;}
ul,ol{padding:0;list-style:none;}
:focus-visible{outline:2px solid var(--brand);outline-offset:2px;border-radius:4px;}
.container{
  width:100%;
  max-width:var(--maxw);
  margin:0 auto;
  padding-left:20px;
  padding-right:20px;
}
.grid-padding-x{margin-left:-12px;margin-right:-12px;}
.grid-padding-x>.cell{padding-left:12px;padding-right:12px;}

/* ---------- header ---------- */
.site-header{
  position:sticky;
  top:0;
  z-index:80;
  background:rgba(5,7,12,.88);
  -webkit-backdrop-filter:blur(14px);
  backdrop-filter:blur(14px);
  border-bottom:1px solid var(--line);
}
.header-inner{
  display:flex;
  align-items:center;
  gap:20px;
  height:64px;
}
.logo{display:flex;align-items:center;gap:10px;flex:0 0 auto;}
.logo-mark{
  display:inline-flex;
  align-items:center;
  justify-content:center;
  min-width:44px;
  height:32px;
  padding:0 8px;
  border-radius:9px;
  background:linear-gradient(135deg,var(--brand),#1FA795);
  color:#04201C;
  font-weight:800;
  font-size:13px;
  letter-spacing:.06em;
  box-shadow:0 6px 18px rgba(59,224,200,.28);
}
.logo-text{
  font-size:16px;
  font-weight:700;
  letter-spacing:.01em;
  white-space:nowrap;
}
.nav{flex:1 1 auto;min-width:0;}
.nav-list{display:flex;align-items:center;justify-content:center;gap:4px;}
.nav-link{
  position:relative;
  display:flex;
  align-items:center;
  height:64px;
  padding:0 14px;
  font-size:15px;
  color:var(--tx-2);
  transition:color .18s var(--ease);
  white-space:nowrap;
}
.nav-link:hover{color:var(--tx-1);}
.nav-link.is-active{color:var(--tx-1);font-weight:600;}
.nav-link.is-active::after{
  content:"";
  position:absolute;
  left:12px;right:12px;bottom:0;
  height:2px;
  border-radius:2px;
  background:var(--brand);
  box-shadow:0 0 12px var(--brand);
}
.header-cta{flex:0 0 auto;}
.menu-toggle{
  display:none;
  flex:0 0 auto;
  width:44px;height:44px;
  border:1px solid var(--line);
  border-radius:12px;
  background:var(--glass);
  cursor:pointer;
  padding:0;
  position:relative;
}
.menu-toggle span{
  position:absolute;
  left:12px;right:12px;
  height:2px;
  border-radius:2px;
  background:var(--tx-1);
  transition:transform .22s var(--ease),opacity .18s var(--ease);
}
.menu-toggle span:nth-child(1){top:15px;}
.menu-toggle span:nth-child(2){top:21px;}
.menu-toggle span:nth-child(3){top:27px;}
.menu-toggle.is-open span:nth-child(1){transform:translateY(6px) rotate(45deg);}
.menu-toggle.is-open span:nth-child(2){opacity:0;}
.menu-toggle.is-open span:nth-child(3){transform:translateY(-6px) rotate(-45deg);}
.mobile-drawer{
  display:none;
  border-top:1px solid var(--line);
  background:rgba(5,7,12,.98);
  padding:8px 20px 20px;
}
.mobile-drawer.is-open{display:block;}
.mobile-drawer a{
  display:flex;
  align-items:center;
  height:48px;
  font-size:15px;
  color:var(--tx-2);
  border-bottom:1px solid var(--line);
}
.mobile-drawer a:last-child{border-bottom:0;}
.mobile-drawer a.is-active{color:var(--brand);font-weight:600;}

/* ---------- buttons ---------- */
.btn{
  display:inline-flex;
  align-items:center;
  justify-content:center;
  gap:8px;
  height:44px;
  padding:0 22px;
  border-radius:var(--r-btn);
  font-size:15px;
  font-weight:600;
  border:1px solid transparent;
  cursor:pointer;
  transition:transform .18s var(--ease),box-shadow .18s var(--ease),background-color .18s var(--ease),color .18s var(--ease),border-color .18s var(--ease);
  line-height:1;
}
.btn-primary{
  background:var(--brand);
  color:#04201C;
  box-shadow:var(--sh-btn),0 0 0 1px rgba(59,224,200,.6);
}
.btn-primary:hover{background:#54ECd7;transform:translateY(-2px);box-shadow:0 12px 30px rgba(59,224,200,.45),0 0 0 1px rgba(59,224,200,.8);}
.btn-ghost{
  background:var(--glass);
  color:var(--tx-1);
  border-color:var(--line-strong);
}
.btn-ghost:hover{border-color:var(--brand);color:var(--brand);transform:translateY(-2px);}
.btn-sm{height:36px;padding:0 16px;font-size:14px;border-radius:10px;}

/* ---------- hero ---------- */
.page-hero{
  position:relative;
  overflow:hidden;
  border-bottom:1px solid var(--line);
  background-color:var(--bg-1);
  background-image:
    linear-gradient(100deg,rgba(5,7,12,.94) 0%,rgba(5,7,12,.78) 52%,rgba(5,7,12,.92) 100%),
    url("/assets/images/backpic/back-3.webp");
  background-size:cover;
  background-position:center;
}
.page-hero::before{
  content:"";
  position:absolute;
  inset:0;
  background-image:
    linear-gradient(rgba(255,255,255,.035) 1px,transparent 1px),
    linear-gradient(90deg,rgba(255,255,255,.035) 1px,transparent 1px);
  background-size:56px 56px;
  opacity:.55;
  pointer-events:none;
}
.page-hero::after{
  content:"";
  position:absolute;
  width:460px;height:460px;
  right:-120px;top:-160px;
  background:radial-gradient(circle,rgba(59,224,200,.20),transparent 68%);
  pointer-events:none;
}
.hero-inner{position:relative;z-index:2;padding:72px 0 68px;}
.crumb{
  display:flex;
  flex-wrap:wrap;
  align-items:center;
  gap:8px;
  font-size:13px;
  color:var(--tx-3);
  margin-bottom:20px;
}
.crumb a{color:var(--tx-2);transition:color .18s var(--ease);}
.crumb a:hover{color:var(--brand);}
.crumb span.dot{color:var(--tx-3);}
.hero-tag{
  display:inline-flex;
  align-items:center;
  gap:8px;
  height:30px;
  padding:0 12px;
  border-radius:999px;
  border:1px solid var(--brand-line);
  background:var(--brand-soft);
  color:var(--brand);
  font-size:13px;
  letter-spacing:.04em;
  margin-bottom:18px;
}
.hero-tag i{font-size:11px;}
.page-hero h1{
  font-size:clamp(28px,4.2vw,44px);
  line-height:1.2;
  font-weight:700;
  letter-spacing:.01em;
  margin-bottom:18px;
}
.page-hero h1 em{
  font-style:normal;
  color:var(--brand);
}
.hero-lead{
  max-width:720px;
  font-size:16px;
  color:var(--tx-2);
  margin-bottom:28px;
}
.hero-actions{display:flex;flex-wrap:wrap;gap:12px;margin-bottom:36px;}
.hero-stats{
  display:grid;
  grid-template-columns:repeat(3,minmax(0,1fr));
  gap:12px;
  max-width:660px;
}
.stat-card{
  background:var(--glass);
  border:1px solid var(--line);
  border-radius:14px;
  padding:14px 16px;
  -webkit-backdrop-filter:blur(10px);
  backdrop-filter:blur(10px);
}
.stat-num{
  font-family:Inter,"Oswald",system-ui,sans-serif;
  font-size:22px;
  font-weight:700;
  color:var(--brand);
  letter-spacing:.02em;
  line-height:1.2;
}
.stat-label{font-size:13px;color:var(--tx-3);margin-top:2px;}

/* ---------- sections ---------- */
.section{padding:88px 0;}
.section-alt{background:var(--bg-1);border-top:1px solid var(--line);border-bottom:1px solid var(--line);}
.section-head{margin-bottom:36px;max-width:760px;}
.section-head.center{margin-left:auto;margin-right:auto;text-align:center;}
h2.section-title{
  position:relative;
  font-size:clamp(22px,3vw,32px);
  line-height:1.3;
  font-weight:700;
  padding-left:16px;
  margin-bottom:12px;
}
h2.section-title::before{
  content:"";
  position:absolute;
  left:0;top:6px;bottom:6px;
  width:4px;
  border-radius:4px;
  background:var(--brand);
  box-shadow:0 0 14px rgba(59,224,200,.55);
}
.section-head.center h2.section-title{padding-left:0;}
.section-head.center h2.section-title::before{display:none;}
.section-sub{color:var(--tx-2);font-size:15px;}
.kicker{
  display:inline-block;
  font-size:12px;
  letter-spacing:.14em;
  color:var(--accent);
  border:1px solid rgba(255,107,74,.35);
  background:var(--accent-soft);
  border-radius:999px;
  padding:3px 10px;
  margin-bottom:12px;
}

/* ---------- speed grid ---------- */
.speed-card{
  height:100%;
  background:var(--bg-2);
  border:1px solid var(--line);
  border-radius:var(--r-card);
  overflow:hidden;
  box-shadow:var(--sh-card);
  transition:transform .18s var(--ease),border-color .18s var(--ease),box-shadow .18s var(--ease);
  margin-bottom:24px;
}
.speed-card:hover{transform:translateY(-4px);border-color:var(--brand-line);box-shadow:0 22px 46px rgba(0,0,0,.55);}
.speed-card-link{display:block;height:100%;}
.speed-media{position:relative;overflow:hidden;aspect-ratio:4/3;background:#0d141c;}
.speed-media img{width:100%;height:100%;object-fit:cover;transition:transform .35s var(--ease);}
.speed-card:hover .speed-media img{transform:scale(1.04);}
.speed-media::after{
  content:"";
  position:absolute;inset:0;
  background:linear-gradient(to top,rgba(5,7,12,.78),rgba(5,7,12,.05) 62%);
}
.speed-flag{
  position:absolute;
  left:12px;top:12px;
  z-index:2;
  display:inline-flex;
  align-items:center;
  gap:6px;
  height:26px;
  padding:0 10px;
  border-radius:999px;
  background:var(--accent);
  color:#2B0B03;
  font-size:12px;
  font-weight:700;
  letter-spacing:.03em;
}
.speed-body{padding:18px 20px 22px;}
.speed-body h3{
  font-size:19px;
  font-weight:600;
  line-height:1.45;
  margin-bottom:8px;
  transition:color .18s var(--ease);
}
.speed-card:hover .speed-body h3{color:var(--brand);}
.speed-body p{font-size:14px;color:var(--tx-2);line-height:1.75;margin-bottom:14px;}
.speed-meta{display:flex;align-items:center;gap:10px;flex-wrap:wrap;}
.badge{
  display:inline-flex;
  align-items:center;
  height:24px;
  padding:0 10px;
  border-radius:999px;
  font-size:12px;
  letter-spacing:.03em;
  border:1px solid var(--brand-line);
  color:var(--brand);
  background:var(--brand-soft);
}
.badge-accent{border-color:rgba(255,107,74,.4);color:var(--accent);background:var(--accent-soft);}
.badge-mute{border-color:var(--line-strong);color:var(--tx-2);background:var(--glass);}
.meta-time{font-size:13px;color:var(--tx-3);font-family:Inter,system-ui,sans-serif;letter-spacing:.03em;}

/* ---------- timeline / rhythm ---------- */
.rhythm{
  position:relative;
  display:grid;
  grid-template-columns:repeat(4,minmax(0,1fr));
  gap:20px;
  margin-top:8px;
}
.rhythm::before{
  content:"";
  position:absolute;
  left:6%;right:6%;top:19px;
  height:1px;
  background:linear-gradient(90deg,transparent,var(--brand-line),var(--brand-line),transparent);
}
.rhythm-item{
  position:relative;
  background:var(--glass);
  border:1px solid var(--line);
  border-radius:14px;
  padding:26px 18px 20px;
  -webkit-backdrop-filter:blur(10px);
  backdrop-filter:blur(10px);
  transition:border-color .18s var(--ease),transform .18s var(--ease);
}
.rhythm-item:hover{border-color:var(--brand-line);transform:translateY(-4px);}
.rhythm-dot{
  position:absolute;
  top:12px;left:18px;
  width:14px;height:14px;
  border-radius:50%;
  background:var(--bg-1);
  border:2px solid var(--brand);
  box-shadow:0 0 12px rgba(59,224,200,.6);
}
.rhythm-num{
  font-family:"Oswald",Inter,system-ui,sans-serif;
  font-size:26px;
  font-weight:700;
  line-height:1;
  color:transparent;
  -webkit-text-stroke:1px var(--brand);
  margin-bottom:10px;
  letter-spacing:.04em;
}
.rhythm-item h3{font-size:16px;font-weight:600;margin-bottom:8px;}
.rhythm-item p{font-size:14px;color:var(--tx-2);line-height:1.75;}

/* ---------- tabs ---------- */
.tabs{
  display:flex;
  flex-wrap:wrap;
  gap:8px;
  border:0;
  background:transparent;
  margin-bottom:24px;
}
.tabs-title{margin:0;}
.tabs-title>a{
  display:inline-flex;
  align-items:center;
  height:38px;
  padding:0 18px;
  border-radius:999px;
  border:1px solid var(--line);
  background:var(--glass);
  color:var(--tx-2);
  font-size:14px;
  transition:color .18s var(--ease),border-color .18s var(--ease),background-color .18s var(--ease);
}
.tabs-title>a:hover{color:var(--tx-1);border-color:var(--line-strong);}
.tabs-title.is-active>a{
  color:#04201C;
  background:var(--brand);
  border-color:var(--brand);
  font-weight:600;
  box-shadow:0 8px 22px rgba(59,224,200,.3);
}
.tabs-content{border:0;background:transparent;margin-bottom:0;}
.tabs-panel{padding:0;}
.tabs-panel.is-active{display:block;}
.news-list{border-top:1px dashed var(--line);}
.news-item{
  display:flex;
  align-items:flex-start;
  gap:16px;
  padding:18px 0;
  border-bottom:1px dashed var(--line);
}
.news-index{
  flex:0 0 auto;
  width:34px;height:34px;
  border-radius:10px;
  display:flex;align-items:center;justify-content:center;
  border:1px solid var(--brand-line);
  color:var(--brand);
  font-family:Inter,system-ui,sans-serif;
  font-size:13px;
  font-weight:700;
}
.news-main{flex:1 1 auto;min-width:0;}
.news-main h3{font-size:16px;font-weight:600;margin-bottom:4px;transition:color .18s var(--ease);}
.news-main h3:hover{color:var(--brand);}
.news-main p{font-size:14px;color:var(--tx-2);line-height:1.75;}
.news-side{
  flex:0 0 auto;
  display:flex;
  align-items:center;
  gap:8px;
  font-size:12px;
  color:var(--tx-3);
  font-family:Inter,system-ui,sans-serif;
  letter-spacing:.03em;
  padding-top:4px;
}
.pulse-dot{
  width:8px;height:8px;border-radius:50%;
  background:var(--accent);
  box-shadow:0 0 10px var(--accent);
}

/* ---------- quotes ---------- */
.quote-rail{
  display:flex;
  gap:20px;
  overflow-x:auto;
  padding:4px 4px 18px;
  scroll-snap-type:x mandatory;
  -webkit-overflow-scrolling:touch;
}
.quote-rail::-webkit-scrollbar{height:6px;}
.quote-rail::-webkit-scrollbar-thumb{background:rgba(255,255,255,.14);border-radius:99px;}
.quote-card{
  flex:0 0 calc((100% - 40px)/3);
  scroll-snap-align:start;
  background:var(--glass);
  border:1px solid var(--line);
  border-radius:var(--r-card);
  padding:24px;
  -webkit-backdrop-filter:blur(12px);
  backdrop-filter:blur(12px);
  position:relative;
  transition:border-color .18s var(--ease),transform .18s var(--ease);
}
.quote-card:hover{border-color:var(--brand-line);transform:translateY(-4px);}
.quote-card::before{
  content:"“";
  position:absolute;
  right:20px;top:6px;
  font-size:56px;
  line-height:1;
  color:rgba(59,224,200,.16);
  font-family:Georgia,serif;
}
.quote-text{font-size:14.5px;color:var(--tx-1);line-height:1.85;margin-bottom:18px;}
.quote-foot{display:flex;align-items:center;gap:10px;}
.avatar{
  width:40px;height:40px;flex:0 0 auto;
  border-radius:50%;
  background:linear-gradient(135deg,#1D2A36,#0E1720);
  border:1px solid var(--line-strong);
  display:flex;align-items:center;justify-content:center;
  color:var(--brand);
  font-size:14px;
  font-weight:700;
}
.quote-name{font-size:14px;color:var(--tx-1);}
.stars{display:flex;gap:3px;color:var(--accent);font-size:12px;margin-top:2px;}

/* ---------- faq ---------- */
.accordion{border:0;background:transparent;margin:0;}
.accordion-item{
  border:1px solid var(--line);
  background:var(--bg-2);
  border-radius:14px;
  margin-bottom:12px;
  overflow:hidden;
  transition:border-color .18s var(--ease);
}
.accordion-item.is-active{border-color:var(--brand-line);}
.accordion-title{
  border:0;
  display:flex;
  align-items:center;
  gap:12px;
  height:56px;
  padding:0 20px;
  font-size:15.5px;
  font-weight:600;
  color:var(--tx-1);
  background:transparent;
  transition:color .18s var(--ease),background-color .18s var(--ease);
}
.accordion-title:hover{background:rgba(255,255,255,.04);color:var(--brand);}
.accordion-item.is-active .accordion-title{color:var(--brand);}
.q-mark{
  flex:0 0 auto;
  width:24px;height:24px;
  border-radius:50%;
  background:var(--brand-soft);
  border:1px solid var(--brand-line);
  color:var(--brand);
  display:flex;align-items:center;justify-content:center;
  font-size:13px;
  font-weight:700;
}
.accordion-title::before{display:none;}
.accordion-content{
  display:none;
  border:0;
  padding:0 20px 20px 56px;
  background:transparent;
  color:var(--tx-2);
  font-size:14.5px;
  line-height:1.85;
}
.accordion-content.is-active{display:block;}
.accordion-content p{border-left:2px solid var(--brand-line);padding-left:14px;}

/* ---------- cta ---------- */
.cta-band{
  position:relative;
  overflow:hidden;
  border-radius:20px;
  border:1px solid var(--brand-line);
  background:
    radial-gradient(600px 220px at 12% 0%,rgba(59,224,200,.16),transparent 70%),
    linear-gradient(120deg,#0C141D,#111B26);
  padding:48px 40px;
  display:flex;
  align-items:center;
  justify-content:space-between;
  gap:32px;
  flex-wrap:wrap;
}
.cta-band h2{font-size:clamp(20px,2.6vw,28px);font-weight:700;margin-bottom:10px;}
.cta-band p{color:var(--tx-2);font-size:15px;max-width:620px;}
.cta-actions{display:flex;gap:12px;flex-wrap:wrap;}

/* ---------- footer ---------- */
.site-footer{
  background:var(--bg-1);
  border-top:1px solid var(--line);
  position:relative;
  padding-top:64px;
}
.site-footer::before{
  content:"";
  position:absolute;top:0;left:0;right:0;height:1px;
  background:linear-gradient(90deg,transparent,var(--brand),transparent);
  opacity:.7;
}
.footer-grid{padding-bottom:40px;}
.footer-brand .logo{margin-bottom:16px;}
.footer-brand p{font-size:14px;color:var(--tx-2);line-height:1.85;max-width:380px;}
.footer-h{
  font-size:14px;
  font-weight:600;
  color:var(--tx-1);
  margin-bottom:16px;
  letter-spacing:.02em;
}
.footer-col ul li{margin-bottom:10px;}
.footer-col ul a{
  font-size:14px;
  color:var(--tx-2);
  transition:color .18s var(--ease);
}
.footer-col ul a:hover{color:var(--brand);}
.footer-note{font-size:13.5px;color:var(--tx-3);line-height:1.85;margin-bottom:10px;}
.footer-bottom{
  border-top:1px solid var(--line);
  padding:20px 0 28px;
  display:flex;
  align-items:center;
  justify-content:space-between;
  gap:12px;
  flex-wrap:wrap;
  font-size:13px;
  color:var(--tx-3);
  font-family:Inter,system-ui,sans-serif;
  letter-spacing:.02em;
}

/* ---------- responsive ---------- */
@media screen and (max-width:1023px){
  .nav,.header-cta{display:none;}
  .menu-toggle{display:block;margin-left:auto;}
  .hero-inner{padding:56px 0 52px;}
  .section{padding:64px 0;}
  .rhythm{grid-template-columns:repeat(2,minmax(0,1fr));gap:16px;}
  .rhythm::before{display:none;}
  .quote-card{flex:0 0 78vw;}
  .cta-band{padding:36px 28px;}
}
@media screen and (max-width:639px){
  body{font-size:15.5px;}
  .container{padding-left:18px;padding-right:18px;}
  .logo-text{font-size:14.5px;max-width:150px;overflow:hidden;text-overflow:ellipsis;white-space:nowrap;}
  .hero-inner{padding:40px 0 44px;}
  .hero-stats{grid-template-columns:1fr;max-width:100%;}
  .hero-actions{gap:10px;}
  .hero-actions .btn{flex:1 1 100%;}
  .section{padding:48px 0;}
  .rhythm{grid-template-columns:1fr;}
  .news-item{flex-wrap:wrap;gap:10px;}
  .news-side{padding-top:0;}
  .accordion-title{height:auto;min-height:56px;padding:14px 16px;line-height:1.5;}
  .accordion-content{padding:0 16px 18px 16px;}
  .quote-card{flex:0 0 84vw;padding:20px;}
  .cta-band{padding:28px 20px;border-radius:16px;}
  .cta-actions .btn{width:100%;}
  .footer-bottom{flex-direction:column;align-items:flex-start;}
}
@media (prefers-reduced-motion:reduce){
  *{transition:none !important;animation:none !important;scroll-behavior:auto !important;}
}

/* roulang page: category4 */
:root{
  --bg-0:#05070C;
  --bg-1:#0B1118;
  --bg-2:#121A24;
  --brand:#3BE0C8;
  --brand-dark:#1C8E7C;
  --accent:#FF6B4A;
  --line:rgba(255,255,255,.10);
  --glass:rgba(255,255,255,.06);
  --tx-1:#EAF2F6;
  --tx-2:#A9B7C2;
  --tx-3:#6E7D8A;
  --r-lg:16px;
  --r-md:12px;
  --r-sm:8px;
  --shadow:0 18px 40px rgba(0,0,0,.45);
  --shadow-btn:0 8px 24px rgba(59,224,200,.35),0 0 0 1px rgba(59,224,200,.6);
  --ease:cubic-bezier(.2,.7,.3,1);
  --f-sans:"PingFang SC","HarmonyOS Sans SC","Microsoft YaHei",system-ui,-apple-system,"Segoe UI",sans-serif;
  --f-num:"Oswald","Inter",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-0);
  color:var(--tx-1);
  font-family:var(--f-sans);
  font-size:16px;
  line-height:1.8;
  -webkit-font-smoothing:antialiased;
  overflow-x:hidden;
}
body.drawer-open{overflow:hidden}
h1,h2,h3,h4,h5,h6{color:var(--tx-1);font-weight:700;margin:0 0 .6em;line-height:1.35}
h1{font-size:clamp(28px,4.2vw,44px);line-height:1.2}
h2{font-size:clamp(22px,3vw,32px);line-height:1.3}
h3{font-size:19px;font-weight:600}
p{margin:0 0 1em;color:var(--tx-2)}
p:last-child{margin-bottom:0}
a{color:var(--brand);text-decoration:none;transition:color .18s var(--ease)}
a:hover{color:var(--brand)}
img{max-width:100%;display:block;height:auto}
ul,ol{margin:0 0 1em;padding-left:1.2em}
button,input,select,textarea{font-family:inherit;font-size:inherit}
button{background:none;border:0;cursor:pointer;color:inherit}
a:focus-visible,button:focus-visible,input:focus-visible{outline:2px solid var(--brand);outline-offset:2px;border-radius:6px}
::selection{background:rgba(59,224,200,.28);color:#fff}

.container{width:100%;max-width:1200px;margin:0 auto;padding:0 20px}
.section{padding:48px 0}
.section-alt{background:var(--bg-1)}
.section-lead{max-width:760px;color:var(--tx-2);font-size:16px}

.sec-title{position:relative;padding-left:16px;margin-bottom:.5em}
.sec-title::before{
  content:"";position:absolute;left:0;top:.16em;bottom:.16em;width:4px;border-radius:2px;
  background:var(--brand);box-shadow:0 0 14px rgba(59,224,200,.6);
}
.eyebrow{
  display:inline-block;font-size:12px;letter-spacing:.08em;color:var(--brand);
  border:1px solid rgba(59,224,200,.35);background:rgba(59,224,200,.08);
  padding:5px 12px;border-radius:999px;margin-bottom:16px;
}

/* 顶栏 */
.site-header{
  position:sticky;top:0;z-index:60;
  background:rgba(5,7,12,.86);
  -webkit-backdrop-filter:blur(14px);backdrop-filter:blur(14px);
  border-bottom:1px solid var(--line);
}
.header-inner{display:flex;align-items:center;justify-content:space-between;gap:20px;height:64px}
.logo{display:inline-flex;align-items:center;gap:10px;color:var(--tx-1)}
.logo:hover{color:var(--tx-1)}
.logo-mark{
  width:34px;height:34px;flex:0 0 auto;border-radius:10px;display:grid;place-items:center;
  background:linear-gradient(135deg,var(--brand),var(--brand-dark));
  color:#04231f;font-family:var(--f-num);font-size:12px;font-weight:700;letter-spacing:.06em;
  box-shadow:0 0 18px rgba(59,224,200,.35);
}
.logo-text{font-size:16px;font-weight:700;letter-spacing:.01em;white-space:nowrap}
.nav-list{display:flex;align-items:center;gap:2px;list-style:none;margin:0;padding:0}
.nav-link{
  position:relative;display:block;padding:10px 14px;border-radius:10px;
  font-size:15px;color:var(--tx-2);transition:color .18s var(--ease),background .18s var(--ease)
}
.nav-link:hover{color:var(--tx-1);background:var(--glass)}
.nav-link.is-active{color:var(--tx-1);font-weight:600}
.nav-link.is-active::after{
  content:"";position:absolute;left:14px;right:14px;bottom:2px;height:2px;border-radius:2px;
  background:var(--brand);box-shadow:0 0 12px rgba(59,224,200,.85);
}
.header-actions{display:flex;align-items:center;gap:10px}
.nav-toggle{
  display:none;width:42px;height:42px;border-radius:12px;border:1px solid var(--line);
  background:var(--glass);color:var(--tx-1);place-items:center;font-size:16px;
}
.nav-toggle:hover{border-color:var(--brand);color:var(--brand)}
.mobile-drawer{
  position:fixed;left:0;right:0;top:56px;bottom:0;z-index:55;
  background:rgba(5,7,12,.98);
  -webkit-backdrop-filter:blur(16px);backdrop-filter:blur(16px);
  padding:8px 20px 40px;overflow-y:auto;
  opacity:0;visibility:hidden;transform:translateY(-10px);
  transition:opacity .22s var(--ease),transform .22s var(--ease),visibility .22s;
}
.mobile-drawer.is-open{opacity:1;visibility:visible;transform:none}
.mobile-drawer a{
  display:flex;align-items:center;height:48px;font-size:16px;color:var(--tx-2);
  border-bottom:1px solid var(--line);
}
.mobile-drawer a:hover,.mobile-drawer a.is-active{color:var(--brand)}
.mobile-drawer a.is-active::before{
  content:"";width:6px;height:6px;border-radius:50%;background:var(--brand);
  margin-right:10px;box-shadow:0 0 10px var(--brand);
}

/* 按钮 */
.btn{
  display:inline-flex;align-items:center;justify-content:center;gap:8px;
  padding:12px 22px;border-radius:var(--r-md);border:1px solid transparent;
  font-size:15px;font-weight:600;line-height:1.2;cursor:pointer;
  transition:transform .18s var(--ease),box-shadow .18s var(--ease),filter .18s var(--ease),
             border-color .18s var(--ease),background .18s var(--ease),color .18s var(--ease);
}
.btn-primary{background:var(--brand);color:#04231f;box-shadow:var(--shadow-btn)}
.btn-primary:hover{filter:brightness(1.08);transform:translateY(-1px);color:#04231f;box-shadow:0 12px 30px rgba(59,224,200,.45),0 0 0 1px rgba(59,224,200,.75)}
.btn-primary:active{transform:translateY(0);filter:brightness(.96)}
.btn-ghost{background:var(--glass);border-color:var(--line);color:var(--tx-1)}
.btn-ghost:hover{border-color:var(--brand);color:var(--brand);transform:translateY(-1px)}
.btn-sm{padding:9px 16px;font-size:14px;border-radius:10px}

/* 标签 */
.chip{
  display:inline-flex;align-items:center;gap:8px;padding:8px 14px;border-radius:999px;
  border:1px solid var(--line);background:var(--glass);color:var(--tx-2);
  font-size:13px;transition:all .18s var(--ease);
}
.chip:hover{border-color:var(--brand);color:var(--brand);transform:translateY(-1px)}
.chip .dot{width:6px;height:6px;border-radius:50%;background:var(--accent);box-shadow:0 0 8px rgba(255,107,74,.8)}

/* 内页首屏 */
.page-hero{
  position:relative;overflow:hidden;padding:40px 0 64px;
  border-bottom:1px solid var(--line);
  background:
    radial-gradient(900px 420px at 80% -12%, rgba(59,224,200,.16), transparent 70%),
    linear-gradient(180deg, rgba(5,7,12,.74), rgba(5,7,12,.96)),
    url('/assets/images/backpic/back-1.png') center/cover no-repeat;
}
.page-hero::before{
  content:"";position:absolute;inset:0;pointer-events:none;opacity:.5;
  background-image:
    linear-gradient(rgba(255,255,255,.045) 1px, transparent 1px),
    linear-gradient(90deg, rgba(255,255,255,.045) 1px, transparent 1px);
  background-size:48px 48px;
}
.page-hero .container{position:relative;z-index:1}
.breadcrumb{display:flex;flex-wrap:wrap;align-items:center;gap:8px;font-size:13px;color:var(--tx-3);margin-bottom:26px}
.breadcrumb a{color:var(--tx-3)}
.breadcrumb a:hover{color:var(--brand)}
.breadcrumb span{color:rgba(255,255,255,.22)}
.breadcrumb em{font-style:normal;color:var(--tx-2)}
.hero-grid{margin-top:4px}
.hero-copy h1{margin-bottom:18px}
.hero-sub{font-size:17px;color:var(--tx-2);max-width:620px;margin-bottom:22px}
.hero-tags{display:flex;flex-wrap:wrap;gap:10px}
.hero-visual{margin-top:32px}
.hero-visual img{
  width:100%;border-radius:18px;border:1px solid var(--line);
  box-shadow:var(--shadow);object-fit:cover;aspect-ratio:4/3;
}

/* 搜索 */
.search-panel{
  background:var(--glass);border:1px solid var(--line);border-radius:var(--r-lg);
  padding:24px;backdrop-filter:blur(14px);-webkit-backdrop-filter:blur(14px);
  box-shadow:var(--shadow);
}
.search-panel .sec-title{font-size:clamp(20px,2.4vw,26px)}
.search-form{display:flex;flex-wrap:wrap;gap:12px;margin:18px 0 12px}
.search-input{
  flex:1 1 260px;min-width:0;height:52px;padding:0 18px;border-radius:var(--r-md);
  background:#0A1017;border:1px solid var(--line);color:var(--tx-1);
  transition:border-color .18s var(--ease),box-shadow .18s var(--ease);
}
.search-input::placeholder{color:var(--tx-3)}
.search-input:focus{
  outline:none;border-color:var(--brand);
  box-shadow:0 0 0 3px rgba(59,224,200,.16);
}
.search-tip{font-size:13px;color:var(--tx-3);margin:0}
.group-tabs{display:flex;flex-wrap:wrap;gap:10px;margin-top:24px}

/* FAQ */
.faq-group{margin-bottom:52px;scroll-margin-top:88px}
.faq-group:last-child{margin-bottom:0}
.group-head{display:flex;align-items:flex-start;gap:16px;margin-bottom:20px}
.group-index{
  font-family:var(--f-num);font-size:34px;font-weight:600;line-height:1;flex:0 0 auto;
  color:transparent;-webkit-text-stroke:1.2px rgba(59,224,200,.85);letter-spacing:.02em;
}
.group-head .sec-title{margin-bottom:4px;font-size:clamp(20px,2.4vw,26px)}
.group-desc{font-size:14px;color:var(--tx-3);margin:0}
.accordion.faq-accordion{
  background:transparent;border:0;border-radius:0;list-style:none;margin:0;padding:0;
}
.faq-accordion .accordion-item{
  background:var(--bg-2);border:1px solid var(--line);border-radius:14px;
  margin-bottom:12px;overflow:hidden;
  transition:border-color .18s var(--ease),transform .18s var(--ease),box-shadow .18s var(--ease);
}
.faq-accordion .accordion-item:hover{border-color:rgba(59,224,200,.35);transform:translateY(-2px)}
.faq-accordion .accordion-item.is-active{border-color:rgba(59,224,200,.5);box-shadow:0 12px 30px rgba(0,0,0,.35)}
.faq-accordion .accordion-title{
  display:flex;align-items:center;gap:12px;padding:0 18px;min-height:56px;
  background:transparent;border:0;border-bottom:0;color:var(--tx-1);
  font-size:16px;font-weight:600;line-height:1.5;
}
.faq-accordion .accordion-title::before{content:none;display:none}
.faq-accordion .accordion-title:hover{color:var(--brand)}
.faq-accordion .accordion-item.is-active .accordion-title{color:var(--brand)}
.q-badge{
  flex:0 0 auto;width:24px;height:24px;border-radius:8px;display:grid;place-items:center;
  font-size:12px;font-weight:700;color:var(--brand);
  border:1px solid rgba(59,224,200,.4);background:rgba(59,224,200,.08);
}
.q-text{flex:1 1 auto}
.chev{font-size:12px;color:var(--tx-3);transition:transform .22s var(--ease),color .22s var(--ease)}
.accordion-item.is-active .chev{transform:rotate(180deg);color:var(--brand)}
.faq-accordion .accordion-content{
  display:none;background:transparent;border:0;border-top:1px solid var(--line);
  padding:18px 20px 22px 20px;color:var(--tx-2);
}
.faq-accordion .accordion-content p{
  margin:0;padding-left:16px;border-left:2px solid var(--brand);font-size:15px;line-height:1.85;
}

/* 排查清单 */
.check-wrap{margin-top:8px}
.check-list{list-style:none;margin:26px 0 0;padding:0;counter-reset:none}
.check-item{
  display:flex;gap:18px;padding:20px 0;border-bottom:1px dashed var(--line);
}
.check-item:first-child{border-top:1px dashed var(--line)}
.check-num{
  flex:0 0 auto;width:56px;font-family:var(--f-num);font-size:32px;font-weight:600;line-height:1.05;
  color:transparent;-webkit-text-stroke:1.2px rgba(59,224,200,.85);
}
.check-item h3{font-size:17px;margin:0 0 6px}
.check-item p{margin:0;font-size:15px}
.check-visual{margin-top:32px}
.check-visual img{
  width:100%;border-radius:var(--r-lg);border:1px solid var(--line);
  box-shadow:var(--shadow);object-fit:cover;aspect-ratio:16/11;
}

/* CTA */
.cta-band{
  position:relative;overflow:hidden;
  border-top:1px solid var(--line);border-bottom:1px solid var(--line);
  background:
    radial-gradient(700px 300px at 15% 0%, rgba(255,107,74,.12), transparent 70%),
    linear-gradient(180deg, var(--bg-1), var(--bg-0));
  padding:56px 0;
}
.cta-inner{display:flex;flex-wrap:wrap;align-items:center;justify-content:space-between;gap:24px}
.cta-inner h2{margin-bottom:8px;font-size:clamp(22px,2.8vw,30px)}
.cta-inner p{margin:0;color:var(--tx-2);max-width:560px}
.cta-actions{display:flex;flex-wrap:wrap;gap:12px}

/* 页脚 */
.site-footer{
  position:relative;background:var(--bg-1);padding:64px 0 28px;margin-top:0;
  border-top:1px solid var(--line);
}
.site-footer::before{
  content:"";position:absolute;top:-1px;left:0;right:0;height:1px;
  background:linear-gradient(90deg,transparent,var(--brand),transparent);opacity:.7;
}
.footer-grid{padding-bottom:36px}
.footer-brand .logo{margin-bottom:16px;color:var(--tx-1)}
.footer-brand p{font-size:14px;color:var(--tx-3);max-width:340px;line-height:1.8}
.footer-h{font-size:15px;font-weight:600;color:var(--tx-1);margin-bottom:16px}
.footer-col ul{list-style:none;margin:0;padding:0}
.footer-col li{margin-bottom:10px}
.footer-col a{color:var(--tx-3);font-size:14px}
.footer-col a:hover{color:var(--brand)}
.footer-note{font-size:13px;color:var(--tx-3);line-height:1.8}
.footer-bottom{
  display:flex;flex-wrap:wrap;gap:10px;justify-content:space-between;align-items:center;
  border-top:1px solid var(--line);padding-top:20px;font-size:13px;color:var(--tx-3);
}

@media screen and (max-width:1023px){
  .nav{display:none}
  .nav-toggle{display:grid}
  .header-inner{height:56px}
  .mobile-drawer{top:56px}
  .btn-header-cta{display:none}
  .section{padding:56px 0}
  .page-hero{padding:32px 0 52px}
}
@media screen and (min-width:1024px){
  .container{padding:0 32px}
  .section{padding:88px 0}
  .page-hero{padding:48px 0 80px}
  .hero-visual{margin-top:0;padding-left:24px}
  .hero-visual img{aspect-ratio:9/10}
  .check-visual{margin-top:0;padding-left:32px}
}
@media screen and (max-width:639px){
  body{font-size:15px}
  .logo-text{font-size:14px}
  .section{padding:48px 0}
  .hero-sub{font-size:16px}
  .search-panel{padding:18px}
  .group-index{font-size:28px;width:44px}
  .check-num{width:44px;font-size:26px}
  .faq-accordion .accordion-title{font-size:15px;padding:12px 14px;min-height:56px;align-items:flex-start}
  .q-badge{margin-top:2px}
  .cta-inner{flex-direction:column;align-items:flex-start}
  .footer-bottom{flex-direction:column;align-items:flex-start}
}
@media (prefers-reduced-motion:reduce){
  *{animation-duration:.001s!important;transition-duration:.001s!important;scroll-behavior:auto!important}
}