/* roulang page: index */
:root{
  --base:#070B18;
  --base-2:#0C1226;
  --primary:#3EE8C4;
  --primary-h:#2BD4B4;
  --secondary:#7A5CFF;
  --accent:#FF5C8A;
  --text:#EEF3FB;
  --text-2:#A9B5CC;
  --text-3:#6C7893;
  --line:rgba(255,255,255,.08);
  --line-2:rgba(255,255,255,.10);
  --glass:rgba(255,255,255,.06);
  --glass-2:rgba(255,255,255,.08);
  --r-xl:22px;
  --r-lg:18px;
  --r-sm:14px;
  --shadow:0 18px 48px rgba(0,0,0,.45);
  --shadow-glow:0 12px 40px rgba(62,232,196,.16);
  --ease:cubic-bezier(.22,.61,.36,1);
  --gap-sec:88px;

  --bs-primary:#3EE8C4;
  --bs-body-bg:#070B18;
  --bs-body-color:#EEF3FB;
  --bs-border-color:rgba(255,255,255,.08);
  --bs-link-color:#3EE8C4;
  --bs-link-hover-color:#2BD4B4;
  --bs-border-radius:18px;
  --bs-border-radius-lg:22px;
  --bs-border-radius-sm:14px;
  --bs-font-sans-serif:"PingFang SC","HarmonyOS Sans SC","Source Han Sans SC","Noto Sans SC","Microsoft YaHei",sans-serif;
}
*{box-sizing:border-box;}
html{scroll-behavior:smooth;}
body{
  margin:0;
  font-family:var(--bs-font-sans-serif);
  font-size:16px;
  line-height:1.85;
  color:var(--text);
  background:linear-gradient(165deg,#0C1226 0%,#070B18 42%,#070B18 100%);
  background-attachment:fixed;
  -webkit-font-smoothing:antialiased;
  overflow-x:hidden;
}
body::before{
  content:"";
  position:fixed;
  inset:0;
  pointer-events:none;
  z-index:0;
  background-image:linear-gradient(rgba(255,255,255,.022) 1px,transparent 1px),linear-gradient(90deg,rgba(255,255,255,.022) 1px,transparent 1px);
  background-size:56px 56px;
  opacity:.7;
}
img{max-width:100%;display:block;}
a{color:var(--primary);text-decoration:none;transition:color 180ms var(--ease),opacity 180ms var(--ease);}
a:hover{color:var(--primary-h);}
button,input,textarea,select{font-family:inherit;}
h1,h2,h3,h4{margin:0;font-weight:700;letter-spacing:-.02em;color:var(--text);}
p{margin:0 0 18px;color:var(--text-2);}
ul{margin:0;padding:0;list-style:none;}
:focus-visible{outline:2px solid var(--primary);outline-offset:2px;}
.container{max-width:1200px;padding-left:24px;padding-right:24px;position:relative;z-index:1;}
.sec{padding:var(--gap-sec) 0;}
.sec-sm{padding:56px 0;}
.sec-head{margin-bottom:36px;}
.sec-eyebrow{
  display:inline-flex;align-items:center;gap:8px;
  font-size:12px;letter-spacing:.02em;color:var(--primary);
  border:1px solid rgba(62,232,196,.28);
  background:rgba(62,232,196,.08);
  padding:5px 12px;border-radius:999px;margin-bottom:14px;
}
.sec-eyebrow::before{content:"";width:6px;height:6px;border-radius:50%;background:var(--primary);box-shadow:0 0 10px var(--primary);}
h1{font-size:34px;line-height:1.3;}
h2{font-size:26px;line-height:1.4;}
h3{font-size:20px;line-height:1.5;}
.sec-sub{font-size:15px;color:var(--text-2);max-width:640px;margin-top:12px;}

/* 按钮 */
.btn{border-radius:999px;font-size:15px;font-weight:600;padding:12px 26px;border:1px solid transparent;transition:all 180ms var(--ease);}
.btn-primary{background:var(--primary);color:#04201A;border-color:var(--primary);}
.btn-primary:hover,.btn-primary:focus{background:var(--primary-h);border-color:var(--primary-h);color:#04201A;transform:translateY(-1px);box-shadow:0 0 24px rgba(62,232,196,.35);}
.btn-primary:active{transform:translateY(0);box-shadow:0 0 12px rgba(62,232,196,.28);}
.btn-glass{background:var(--glass);color:var(--text);border:1px solid var(--line-2);backdrop-filter:blur(18px) saturate(140%);}
.btn-glass:hover{color:var(--primary);border-color:rgba(62,232,196,.45);transform:translateY(-1px);box-shadow:var(--shadow-glow);}
.btn-block{display:block;width:100%;text-align:center;}
.link-more{font-size:14px;font-weight:600;display:inline-flex;align-items:center;gap:6px;}
.link-more i{font-size:12px;transition:transform 180ms var(--ease);}
.link-more:hover i{transform:translateX(3px);}

/* 顶部导航 */
.site-header{
  position:fixed;top:0;left:0;right:0;z-index:1030;
  backdrop-filter:blur(18px) saturate(140%);
  background:rgba(7,11,24,.72);
  border-bottom:1px solid var(--line);
  transition:height 180ms var(--ease),background 180ms var(--ease);
}
.site-header .nav-inner{height:72px;display:flex;align-items:center;gap:28px;transition:height 180ms var(--ease);}
.site-header.scrolled{background:rgba(7,11,24,.92);}
.site-header.scrolled .nav-inner{height:62px;}
.brand{display:flex;align-items:center;gap:12px;flex-shrink:0;}
.brand-mark{
  width:38px;height:38px;border-radius:12px;flex-shrink:0;
  background:linear-gradient(140deg,rgba(62,232,196,.9),rgba(122,92,255,.85));
  display:grid;place-items:center;color:#04201A;font-weight:800;font-size:15px;letter-spacing:-.04em;
  box-shadow:0 8px 24px rgba(62,232,196,.24);
}
.brand-text{display:flex;align-items:baseline;gap:8px;}
.brand-name{font-size:18px;font-weight:700;color:var(--text);letter-spacing:-.02em;}
.brand-divider{width:1px;height:14px;background:var(--line-2);}
.brand-sub{font-size:12px;color:var(--text-3);}
.nav-links{display:flex;align-items:center;gap:6px;margin-left:auto;}
.nav-links a.nav-item{
  position:relative;font-size:15px;color:var(--text-2);padding:8px 14px;border-radius:999px;
}
.nav-links a.nav-item::after{
  content:"";position:absolute;left:50%;right:50%;bottom:2px;height:2px;border-radius:2px;
  background:var(--primary);box-shadow:0 0 10px var(--primary);
  transition:left 180ms var(--ease),right 180ms var(--ease);
}
.nav-links a.nav-item:hover{color:var(--text);}
.nav-links a.nav-item:hover::after{left:16px;right:16px;}
.nav-links a.nav-item.active{color:var(--primary);}
.nav-links a.nav-item.active::after{left:16px;right:16px;}
.nav-cta{margin-left:18px;flex-shrink:0;}
.nav-toggle{
  display:none;margin-left:auto;width:42px;height:42px;border-radius:12px;
  background:var(--glass);border:1px solid var(--line-2);color:var(--text);font-size:17px;
}
.mobile-drawer{
  display:none;padding:8px 0 22px;
}
.mobile-drawer.open{display:block;}
.mobile-drawer a{
  display:flex;align-items:center;justify-content:space-between;
  padding:14px 4px;font-size:16px;color:var(--text-2);border-bottom:1px solid var(--line);
}
.mobile-drawer a.active{color:var(--primary);}
.mobile-drawer .btn{margin-top:18px;}

/* Hero */
.hero{position:relative;padding:132px 0 72px;overflow:hidden;}
.hero-bg{
  position:absolute;inset:0;z-index:0;
  background-image:url('/assets/images/backpic/back-1.webp');
  background-size:cover;background-position:center;
  opacity:.5;
}
.hero-bg::after{
  content:"";position:absolute;inset:0;
  background:linear-gradient(180deg,rgba(7,11,24,.86) 0%,rgba(7,11,24,.72) 45%,rgba(7,11,24,.97) 100%);
}
.hero-grid{display:grid;grid-template-columns:1fr 420px;gap:56px;align-items:center;position:relative;z-index:1;}
.hero h1{margin-bottom:18px;}
.hero h1 em{font-style:normal;color:var(--primary);}
.hero-lead{font-size:17px;color:var(--text-2);margin-bottom:26px;max-width:520px;}
.hero-tags{display:flex;flex-wrap:wrap;gap:10px;margin-bottom:30px;}
.tag-chip{
  font-size:13px;color:var(--text-2);padding:6px 14px;border-radius:999px;
  border:1px solid var(--line-2);background:var(--glass);
}
.tag-chip i{color:var(--primary);margin-right:6px;font-size:11px;}
.hero-actions{display:flex;flex-wrap:wrap;gap:14px;}
.hero-stats{display:flex;gap:34px;margin-top:38px;padding-top:26px;border-top:1px solid var(--line);}
.hero-stat b{display:block;font-size:24px;color:var(--text);font-variant-numeric:tabular-nums;letter-spacing:-.02em;}
.hero-stat span{font-size:13px;color:var(--text-3);}
.phone-card{
  position:relative;width:100%;max-width:420px;aspect-ratio:9/16;max-height:520px;margin-left:auto;
  border-radius:var(--r-xl);overflow:hidden;
  background:var(--glass);border:1px solid var(--line-2);
  box-shadow:0 24px 70px rgba(0,0,0,.55),0 0 0 1px rgba(62,232,196,.14),0 0 60px rgba(62,232,196,.10);
}
.phone-card img{width:100%;height:100%;object-fit:cover;}
.phone-card::after{
  content:"";position:absolute;inset:0;
  background:linear-gradient(180deg,rgba(7,11,24,.15) 0%,rgba(7,11,24,.10) 45%,rgba(7,11,24,.88) 100%);
}
.play-btn{
  position:absolute;top:50%;left:50%;transform:translate(-50%,-50%);
  width:56px;height:56px;border-radius:50%;z-index:2;
  background:rgba(7,11,24,.55);border:2px solid var(--primary);color:var(--primary);
  display:grid;place-items:center;font-size:16px;
  box-shadow:0 0 26px rgba(62,232,196,.45);
  transition:transform 180ms var(--ease);
}
.play-btn:hover{transform:translate(-50%,-50%) scale(1.06);}
.phone-info{position:absolute;left:16px;right:16px;bottom:34px;z-index:2;display:flex;flex-wrap:wrap;gap:8px;}
.phone-pill{
  font-size:12px;color:var(--text);padding:5px 12px;border-radius:999px;
  background:rgba(7,11,24,.6);border:1px solid var(--line-2);backdrop-filter:blur(10px);
}
.phone-bar{position:absolute;left:0;right:0;bottom:0;height:3px;background:rgba(255,255,255,.10);z-index:3;}
.phone-bar i{display:block;height:100%;width:62%;background:linear-gradient(90deg,var(--primary),var(--secondary));}

/* 横滑片段条 */
.rail-wrap{position:relative;}
.rail{
  display:flex;gap:20px;overflow-x:auto;padding:6px 2px 22px;
  scroll-snap-type:x mandatory;scrollbar-width:none;
}
.rail::-webkit-scrollbar{display:none;}
.rail-card{
  flex:0 0 240px;scroll-snap-align:start;position:relative;
  border-radius:var(--r-lg);overflow:hidden;background:var(--glass);
  border:1px solid var(--line-2);box-shadow:var(--shadow);
  transition:transform 180ms var(--ease),box-shadow 180ms var(--ease),border-color 180ms var(--ease);
}
.rail-card:hover{transform:translateY(-4px);border-color:rgba(62,232,196,.35);box-shadow:var(--shadow),var(--shadow-glow);}
.rail-thumb{aspect-ratio:3/4;width:100%;object-fit:cover;background:linear-gradient(150deg,#101a33,#0a1122);}
.rail-badge{
  position:absolute;top:12px;left:12px;font-size:12px;font-weight:600;
  background:rgba(255,92,138,.92);color:#2A0512;padding:4px 10px;border-radius:999px;
  font-variant-numeric:tabular-nums;
}
.rail-time{
  position:absolute;right:12px;bottom:56px;font-size:12px;color:var(--text);
  background:rgba(7,11,24,.66);border:1px solid var(--line-2);padding:3px 9px;border-radius:999px;
  font-variant-numeric:tabular-nums;
}
.rail-body{padding:14px 16px 18px;}
.rail-body h3{font-size:15px;line-height:1.5;font-weight:600;display:-webkit-box;-webkit-line-clamp:2;-webkit-box-orient:vertical;overflow:hidden;min-height:45px;}
.rail-body p{font-size:13px;color:var(--text-3);margin:8px 0 0;}
.rail-nav{display:flex;gap:10px;justify-content:flex-end;margin-bottom:14px;}
.rail-arrow{
  width:36px;height:36px;border-radius:50%;background:var(--glass);border:1px solid var(--line-2);
  color:var(--text-2);display:grid;place-items:center;font-size:13px;transition:all 180ms var(--ease);
}
.rail-arrow:hover{color:var(--primary);border-color:rgba(62,232,196,.45);box-shadow:var(--shadow-glow);}
.rail-progress{height:3px;border-radius:3px;background:rgba(255,255,255,.08);overflow:hidden;margin-top:4px;}
.rail-progress i{display:block;height:100%;width:22%;background:linear-gradient(90deg,var(--primary),var(--secondary));transition:width 180ms var(--ease);}

/* 编号清单 */
.list-numbered{display:grid;grid-template-columns:1fr 1fr;gap:0 48px;}
.num-item{
  display:flex;align-items:flex-start;gap:20px;padding:22px 4px;
  border-bottom:1px dashed var(--line);text-decoration:none;
  transition:background 180ms var(--ease);
}
.num-item:hover{background:rgba(255,255,255,.02);}
.num-index{
  font-size:40px;font-weight:700;line-height:1;flex-shrink:0;font-variant-numeric:tabular-nums;
  color:transparent;-webkit-text-stroke:1.4px rgba(62,232,196,.75);letter-spacing:-.04em;
}
.num-body{flex:1;min-width:0;}
.num-body h3{font-size:18px;font-weight:600;margin-bottom:6px;}
.num-body p{font-size:13px;color:var(--text-3);margin:0;line-height:1.7;}
.num-arrow{color:var(--text-3);font-size:13px;padding-top:6px;transition:transform 180ms var(--ease),color 180ms var(--ease);}
.num-item:hover .num-arrow{color:var(--primary);transform:translateX(4px);}

/* 数据条 */
.stat-strip{
  display:grid;grid-template-columns:repeat(4,1fr);gap:20px;
  background:rgba(255,255,255,.045);border:1px solid var(--line-2);border-radius:var(--r-xl);
  padding:32px 28px;box-shadow:var(--shadow);
}
.stat-block b{display:block;font-size:30px;letter-spacing:-.03em;font-variant-numeric:tabular-nums;color:var(--primary);}
.stat-block span{font-size:14px;color:var(--text-2);}
.stat-block em{display:block;font-style:normal;font-size:12px;color:var(--text-3);margin-top:4px;}

/* 资讯列表 */
.news-grid{display:grid;grid-template-columns:1fr 1fr;gap:20px;}
.news-card{
  display:flex;gap:16px;padding:16px;border-radius:var(--r-lg);
  background:rgba(255,255,255,.045);border:1px solid var(--line);
  color:inherit;text-decoration:none;
  transition:transform 180ms var(--ease),border-color 180ms var(--ease),box-shadow 180ms var(--ease);
}
.news-card:hover{transform:translateY(-3px);border-color:rgba(62,232,196,.32);box-shadow:var(--shadow-glow);color:inherit;}
.news-thumb{
  flex:0 0 150px;aspect-ratio:16/9;border-radius:calc(var(--r-lg) - 4px);overflow:hidden;
  background:linear-gradient(150deg,#13203c,#0a1122);
}
.news-thumb img{width:100%;height:100%;object-fit:cover;}
.news-thumb .ph{
  width:100%;height:100%;display:grid;place-items:center;font-size:12px;color:var(--text-3);
  background:linear-gradient(150deg,rgba(62,232,196,.10),rgba(122,92,255,.14));
}
.news-body{flex:1;min-width:0;}
.news-meta{display:flex;align-items:center;gap:10px;margin-bottom:8px;}
.news-cat{
  font-size:12px;color:var(--primary);background:rgba(62,232,196,.10);
  border:1px solid rgba(62,232,196,.26);padding:2px 9px;border-radius:999px;
}
.news-time{font-size:13px;color:var(--text-3);font-variant-numeric:tabular-nums;}
.news-body h3{font-size:16px;font-weight:600;line-height:1.55;display:-webkit-box;-webkit-line-clamp:2;-webkit-box-orient:vertical;overflow:hidden;}
.news-body p{font-size:14px;color:var(--text-3);margin:8px 0 0;line-height:1.7;display:-webkit-box;-webkit-line-clamp:2;-webkit-box-orient:vertical;overflow:hidden;}
.empty-state{
  grid-column:1/-1;text-align:center;padding:56px 24px;border-radius:var(--r-xl);
  background:rgba(255,255,255,.035);border:1px dashed var(--line-2);
}
.empty-state i{font-size:26px;color:var(--text-3);}
.empty-state p{margin:14px 0 20px;color:var(--text-3);font-size:14px;}

/* 口碑 */
.voice-rail{display:flex;gap:18px;overflow-x:auto;padding:6px 2px 18px;scrollbar-width:none;}
.voice-rail::-webkit-scrollbar{display:none;}
.voice-card{
  flex:0 0 280px;border-radius:16px;padding:18px;
  background:rgba(255,255,255,.05);border:1px solid var(--line);
}
.voice-head{display:flex;align-items:center;gap:10px;margin-bottom:10px;}
.avatar{
  width:32px;height:32px;border-radius:50%;flex-shrink:0;
  background:rgba(255,255,255,.08);border:1px solid var(--line-2);
  display:grid;place-items:center;font-size:13px;color:var(--primary);
}
.voice-name{font-size:13px;color:var(--text-2);}
.voice-card p{font-size:14px;color:var(--text-2);margin:0;line-height:1.75;display:-webkit-box;-webkit-line-clamp:2;-webkit-box-orient:vertical;overflow:hidden;}
.voice-foot{display:flex;justify-content:flex-end;gap:2px;margin-top:10px;color:var(--primary);font-size:12px;}
.voice-foot .half{opacity:.45;}

/* CTA 面板 */
.cta-panel{
  display:flex;align-items:center;justify-content:space-between;gap:32px;flex-wrap:wrap;
  padding:38px 36px;border-radius:var(--r-xl);
  background:linear-gradient(120deg,rgba(62,232,196,.10),rgba(122,92,255,.12));
  border:1px solid var(--line-2);backdrop-filter:blur(18px) saturate(140%);
  box-shadow:var(--shadow);
}
.cta-panel h2{font-size:24px;margin-bottom:8px;}
.cta-panel p{margin:0;font-size:15px;}
.cta-actions{display:flex;gap:14px;flex-wrap:wrap;}

/* FAQ */
.faq-item{
  background:rgba(255,255,255,.045);border:1px solid var(--line);border-radius:var(--r-sm);
  margin-bottom:12px;overflow:hidden;
}
.faq-item .accordion-button{
  background:transparent;color:var(--text);font-size:16px;font-weight:600;
  padding:18px 20px;box-shadow:none;border-radius:var(--r-sm);
}
.faq-item .accordion-button:not(.collapsed){color:var(--primary);}
.faq-item .accordion-button::after{
  filter:invert(84%) sepia(28%) saturate(720%) hue-rotate(110deg);
  transition:transform 180ms var(--ease);
}
.faq-item .accordion-button:focus{box-shadow:none;border-color:transparent;}
.faq-item .accordion-body{padding:0 20px 20px;font-size:15px;line-height:1.8;color:var(--text-2);}
.faq-item:has(.accordion-button:not(.collapsed)){border-color:rgba(62,232,196,.4);}

/* 页脚 */
.site-footer{
  margin-top:40px;border-top:1px solid var(--line);
  background:rgba(6,9,20,.92);padding:64px 0 28px;
}
.footer-grid{display:grid;grid-template-columns:1.5fr 1fr 1fr 1fr;gap:40px;}
.footer-brand .brand-name{font-size:18px;}
.footer-brand p{font-size:14px;color:var(--text-3);margin:16px 0 18px;max-width:320px;line-height:1.8;}
.footer-tags{display:flex;flex-wrap:wrap;gap:8px;}
.footer-col h4{font-size:14px;color:var(--text);margin-bottom:16px;letter-spacing:0;}
.footer-col a,.footer-col span{display:block;font-size:14px;color:var(--text-3);margin-bottom:11px;position:relative;width:fit-content;}
.footer-col a::after{
  content:"";position:absolute;left:0;bottom:-2px;width:0;height:2px;background:var(--primary);
  transition:width 180ms var(--ease);
}
.footer-col a:hover{color:var(--primary);}
.footer-col a:hover::after{width:100%;}
.footer-bottom{
  margin-top:48px;padding-top:22px;border-top:1px solid var(--line);
  display:flex;justify-content:space-between;gap:14px;flex-wrap:wrap;
  font-size:13px;color:var(--text-3);
}
.footer-bottom a{color:var(--text-3);}
.footer-bottom a:hover{color:var(--primary);}

/* 移动底部 Tab */
.mobile-tabbar{
  display:none;position:fixed;left:0;right:0;bottom:0;z-index:1040;
  height:calc(60px + env(safe-area-inset-bottom));
  padding-bottom:env(safe-area-inset-bottom);
  background:rgba(8,12,24,.92);backdrop-filter:blur(18px) saturate(140%);
  border-top:1px solid var(--line-2);
}
.mobile-tabbar ul{display:flex;height:60px;}
.mobile-tabbar li{flex:1;}
.mobile-tabbar a{
  height:60px;display:flex;flex-direction:column;align-items:center;justify-content:center;gap:3px;
  font-size:11px;color:var(--text-3);position:relative;
}
.mobile-tabbar a i{font-size:18px;}
.mobile-tabbar a.active{color:var(--primary);}
.mobile-tabbar a.active::before{
  content:"";position:absolute;top:6px;width:4px;height:4px;border-radius:50%;
  background:var(--primary);box-shadow:0 0 10px var(--primary);
}
.float-cta{
  display:none;position:fixed;left:16px;right:16px;bottom:calc(72px + env(safe-area-inset-bottom));
  z-index:1035;align-items:center;gap:12px;padding:10px 12px;border-radius:999px;
  background:rgba(8,12,24,.94);border:1px solid var(--line-2);backdrop-filter:blur(18px);
  box-shadow:0 14px 40px rgba(0,0,0,.5);
}
.float-cta.show{display:flex;}
.float-cta .txt{flex:1;min-width:0;font-size:12px;color:var(--text-2);line-height:1.4;}
.float-cta .txt b{display:block;font-size:13px;color:var(--primary);font-variant-numeric:tabular-nums;}
.float-cta .btn{padding:9px 18px;font-size:13px;flex-shrink:0;}

/* 入场动画 */
.reveal{opacity:0;transform:translateY(16px);transition:opacity 520ms var(--ease),transform 520ms var(--ease);}
.reveal.in-view{opacity:1;transform:none;}

/* 响应式 */
@media (max-width:1279.98px){
  .hero-grid{grid-template-columns:1fr 360px;gap:40px;}
}
@media (max-width:991.98px){
  :root{--gap-sec:56px;}
  .container{padding-left:16px;padding-right:16px;}
  .nav-links,.nav-cta{display:none;}
  .nav-toggle{display:grid;place-items:center;}
  .hero{padding:108px 0 48px;}
  .hero-grid{grid-template-columns:1fr;gap:36px;}
  h1{font-size:27px;line-height:1.35;}
  h2{font-size:21px;}
  .hero-lead{font-size:15px;}
  .hero-actions .btn{width:100%;}
  .hero-stats{gap:22px;flex-wrap:wrap;}
  .phone-card{margin:0 auto;max-height:380px;}
  .list-numbered{grid-template-columns:1fr;}
  .stat-strip{grid-template-columns:1fr 1fr;padding:24px 20px;gap:24px;}
  .news-grid{grid-template-columns:1fr;}
  .footer-grid{grid-template-columns:1fr 1fr;gap:32px;}
  .mobile-tabbar{display:block;}
  body{padding-bottom:76px;}
  .cta-panel{padding:28px 22px;}
  .cta-actions{width:100%;}
  .cta-actions .btn{flex:1;}
  .rail-arrow{display:none;}
  .rail-card{flex:0 0 200px;}
}
@media (max-width:575.98px){
  .stat-strip{grid-template-columns:1fr;}
  .footer-grid{grid-template-columns:1fr;}
  .news-card{flex-direction:column;}
  .news-thumb{flex:none;width:100%;aspect-ratio:16/9;}
  .brand-sub,.brand-divider{display:none;}
  .num-index{font-size:32px;}
}
@media (prefers-reduced-motion:reduce){
  *{animation:none!important;transition:none!important;}
  .reveal{opacity:1;transform:none;}
}

/* roulang page: article */
:root{
  --bg-1:#070B18;
  --bg-2:#0C1226;
  --primary:#3EE8C4;
  --primary-hover:#2BD4B4;
  --secondary:#7A5CFF;
  --accent:#FF5C8A;
  --text:#EEF3FB;
  --text-2:#A9B5CC;
  --text-3:#6C7893;
  --line:rgba(255,255,255,.08);
  --glass:rgba(255,255,255,.06);
  --glass-strong:rgba(255,255,255,.09);
  --glass-border:rgba(255,255,255,.10);
  --radius-lg:22px;
  --radius:18px;
  --radius-sm:14px;
  --shadow:0 18px 48px rgba(0,0,0,.45);
  --ease:cubic-bezier(.22,.61,.36,1);
  --bs-primary:#3EE8C4;
  --bs-body-bg:#070B18;
  --bs-body-color:#EEF3FB;
  --bs-border-color:rgba(255,255,255,.10);
  --bs-link-color:#3EE8C4;
  --bs-link-hover-color:#2BD4B4;
  --bs-border-radius:18px;
  --bs-border-radius-lg:22px;
  --bs-border-radius-sm:14px;
}
*,*::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","Source Han Sans SC","Noto Sans SC","Microsoft YaHei",Inter,system-ui,sans-serif;
  font-size:16px;
  line-height:1.85;
  color:var(--text);
  background:linear-gradient(165deg,#0C1226 0%,#070B18 55%,#050810 100%);
  background-attachment:fixed;
  min-height:100vh;
  overflow-x:hidden;
}
body::before{
  content:"";
  position:fixed;
  inset:0;
  pointer-events:none;
  background-image:radial-gradient(rgba(255,255,255,.035) 1px,transparent 1px);
  background-size:26px 26px;
  opacity:.55;
  z-index:0;
}
img{max-width:100%;height:auto;display:block;}
a{color:var(--primary);text-decoration:none;transition:color .18s var(--ease);}
a:hover{color:var(--primary-hover);}
h1,h2,h3,h4,h5{color:var(--text);font-weight:700;letter-spacing:-.01em;}
p{margin:0 0 18px;color:var(--text-2);}
ul,ol{margin:0 0 18px;padding-left:0;}
button{font-family:inherit;}
:focus-visible{outline:2px solid var(--primary);outline-offset:2px;border-radius:6px;}
::selection{background:rgba(62,232,196,.28);color:#fff;}

.container{max-width:1200px;padding-left:24px;padding-right:24px;margin-inline:auto;position:relative;z-index:1;}

/* ============ 顶部导航 ============ */
.site-header{
  position:fixed;
  top:0;left:0;right:0;
  z-index:900;
  height:72px;
  display:flex;align-items:center;
  background:rgba(7,11,24,.72);
  backdrop-filter:blur(18px) saturate(140%);
  -webkit-backdrop-filter:blur(18px) saturate(140%);
  border-bottom:1px solid var(--line);
  transition:height .18s var(--ease),background .18s var(--ease);
}
.site-header.is-scrolled{height:62px;background:rgba(7,11,24,.92);}
.nav-inner{
  display:flex;align-items:center;justify-content:space-between;gap:24px;
  width:100%;max-width:1200px;margin-inline:auto;padding:0 24px;
}
.brand{display:flex;align-items:center;gap:12px;flex-shrink:0;}
.brand-name{
  font-size:18px;font-weight:700;color:var(--text);letter-spacing:.01em;
  text-shadow:0 0 18px rgba(62,232,196,.35);
}
.brand-name i{color:var(--primary);margin-right:6px;}
.brand-divider{width:1px;height:18px;background:var(--line);}
.brand-sub{font-size:13px;color:var(--text-3);white-space:nowrap;}
.nav-links{display:flex;align-items:center;gap:6px;}
.nav-item{
  position:relative;
  display:inline-block;
  padding:8px 14px;
  font-size:15px;
  color:var(--text-2);
  border-radius:999px;
  transition:color .18s var(--ease),background .18s var(--ease);
}
.nav-item::after{
  content:"";
  position:absolute;left:50%;bottom:2px;
  width:0;height:2px;border-radius:2px;
  background:var(--primary);
  box-shadow:0 0 10px rgba(62,232,196,.7);
  transform:translateX(-50%);
  transition:width .18s var(--ease);
}
.nav-item:hover{color:var(--text);background:rgba(255,255,255,.04);}
.nav-item:hover::after{width:22px;}
.nav-item.active{color:var(--primary);}
.nav-item.active::after{width:22px;}
.nav-cta{
  display:inline-flex;align-items:center;gap:8px;
  padding:10px 22px;
  font-size:14px;font-weight:600;
  color:#04120E;
  background:linear-gradient(135deg,var(--primary),#63F0D6);
  border-radius:999px;
  border:none;
  box-shadow:0 0 24px rgba(62,232,196,.30);
  transition:transform .18s var(--ease),box-shadow .18s var(--ease),background .18s var(--ease);
  white-space:nowrap;
}
.nav-cta:hover{transform:translateY(-1px);box-shadow:0 0 30px rgba(62,232,196,.5);color:#04120E;background:linear-gradient(135deg,var(--primary-hover),#7BF3DD);}
.nav-cta:active{transform:translateY(0);}
.nav-toggle{
  display:none;
  width:42px;height:42px;
  align-items:center;justify-content:center;
  background:var(--glass);
  border:1px solid var(--glass-border);
  border-radius:12px;
  color:var(--text);
  font-size:17px;
  cursor:pointer;
}
.mobile-drawer{
  display:none;
  position:fixed;
  top:72px;left:0;right:0;
  z-index:880;
  padding:18px 24px 26px;
  background:rgba(9,14,30,.97);
  backdrop-filter:blur(18px);
  border-bottom:1px solid var(--line);
}
.mobile-drawer.is-open{display:block;}
.mobile-drawer a{
  display:block;
  padding:13px 14px;
  font-size:15px;
  color:var(--text-2);
  border-radius:12px;
  border:1px solid transparent;
}
.mobile-drawer a.active,
.mobile-drawer a:hover{color:var(--primary);background:rgba(62,232,196,.07);border-color:rgba(62,232,196,.22);}
.mobile-drawer .drawer-cta{
  display:flex;justify-content:center;
  margin-top:14px;
  padding:13px;
  color:#04120E;font-weight:600;
  background:linear-gradient(135deg,var(--primary),#63F0D6);
  border-radius:999px;
}

/* ============ 主体 ============ */
main{padding-top:112px;padding-bottom:60px;position:relative;z-index:1;}

.breadcrumb-bar{
  display:flex;flex-wrap:wrap;align-items:center;gap:8px;
  font-size:13px;color:var(--text-3);
  margin-bottom:26px;
}
.breadcrumb-bar a{color:var(--text-3);}
.breadcrumb-bar a:hover{color:var(--primary);}
.breadcrumb-bar .sep{opacity:.5;}
.breadcrumb-bar .current{
  max-width:min(46ch,60vw);
  overflow:hidden;text-overflow:ellipsis;white-space:nowrap;
  color:var(--text-2);
}

.article-head{max-width:820px;margin:0 auto 34px;}
.article-head h1{
  font-size:34px;line-height:1.3;letter-spacing:-.02em;
  margin:0 0 18px;
}
.article-meta{
  display:flex;flex-wrap:wrap;align-items:center;gap:10px;
  font-size:13px;color:var(--text-3);
}
.meta-chip{
  display:inline-flex;align-items:center;gap:6px;
  padding:5px 13px;
  border-radius:999px;
  background:rgba(62,232,196,.09);
  border:1px solid rgba(62,232,196,.26);
  color:var(--primary);
  font-size:12px;letter-spacing:.02em;
}
.meta-item{display:inline-flex;align-items:center;gap:6px;font-variant-numeric:tabular-nums;}
.meta-item i{color:var(--text-3);font-size:12px;}
.head-rule{height:1px;background:var(--line);margin-top:24px;}

.article-layout{max-width:820px;margin:0 auto;}

.article-body{
  font-size:16px;line-height:1.9;color:var(--text-2);
}
.article-body p{margin:0 0 18px;color:#C6D0E2;}
.article-body h2{
  position:relative;
  font-size:24px;line-height:1.4;
  margin:40px 0 16px;
  padding-left:15px;
  color:var(--text);
}
.article-body h2::before{
  content:"";position:absolute;left:0;top:.36em;
  width:3px;height:19px;border-radius:2px;
  background:var(--primary);
  box-shadow:0 0 12px rgba(62,232,196,.6);
}
.article-body h3{font-size:19px;margin:30px 0 12px;color:var(--text);}
.article-body a{color:var(--primary);border-bottom:1px solid rgba(62,232,196,.35);}
.article-body a:hover{border-bottom-color:var(--primary);}
.article-body ul,.article-body ol{padding-left:22px;margin-bottom:20px;}
.article-body ul{list-style:none;padding-left:20px;}
.article-body ul li{position:relative;padding-left:6px;margin-bottom:10px;color:#C6D0E2;}
.article-body ul li::before{
  content:"";position:absolute;left:-16px;top:.68em;
  width:7px;height:7px;border-radius:2px;
  background:var(--primary);opacity:.85;
}
.article-body ol li{margin-bottom:10px;color:#C6D0E2;}
.article-body ol li::marker{color:var(--primary);font-weight:600;}
.article-body blockquote{
  margin:24px 0;
  padding:18px 22px;
  background:var(--glass);
  border-left:3px solid var(--primary);
  border-radius:0 var(--radius-sm) var(--radius-sm) 0;
  color:var(--text-2);
}
.article-body blockquote p:last-child{margin-bottom:0;}
.article-body img{
  border-radius:var(--radius-sm);
  margin:22px auto;
  border:1px solid var(--glass-border);
}
.article-body figure{margin:24px 0;}
.article-body figcaption{
  font-size:13px;color:var(--text-3);text-align:center;margin-top:10px;
}
.article-body code{
  background:rgba(122,92,255,.14);
  border:1px solid rgba(122,92,255,.28);
  color:#C9BAFF;
  padding:2px 7px;
  border-radius:6px;
  font-size:14px;
}
.article-body pre{
  background:rgba(255,255,255,.04);
  border:1px solid var(--glass-border);
  border-radius:var(--radius-sm);
  padding:16px 18px;
  overflow-x:auto;
}
.article-body pre code{background:none;border:none;padding:0;}
.article-body table{
  width:100%;
  border-collapse:collapse;
  margin:22px 0;
  font-size:15px;
  display:block;
  overflow-x:auto;
}
.article-body th,.article-body td{
  border:1px solid var(--line);
  padding:10px 14px;
  text-align:left;
}
.article-body th{background:rgba(62,232,196,.08);color:var(--text);}
.article-body hr{border:none;height:1px;background:var(--line);margin:32px 0;}

.inline-cta{
  display:flex;flex-wrap:wrap;align-items:center;justify-content:center;gap:14px;
  margin:36px auto;
  padding:22px 26px;
  max-width:640px;
  text-align:center;
  background:var(--glass);
  border:1px solid var(--glass-border);
  border-radius:var(--radius);
}
.inline-cta span{font-size:15px;color:var(--text-2);}
.inline-cta a{
  display:inline-flex;align-items:center;gap:8px;
  padding:9px 22px;
  font-size:14px;font-weight:600;
  border-radius:999px;
  border:1px solid rgba(62,232,196,.45);
  color:var(--primary);
  transition:all .18s var(--ease);
}
.inline-cta a:hover{background:rgba(62,232,196,.12);transform:translateY(-1px);}

.empty-state{
  text-align:center;
  padding:64px 24px;
  background:var(--glass);
  border:1px solid var(--glass-border);
  border-radius:var(--radius-lg);
}
.empty-state i{font-size:38px;color:var(--text-3);margin-bottom:18px;display:block;}
.empty-state h2{font-size:21px;margin-bottom:10px;}
.empty-state p{font-size:15px;margin-bottom:22px;}
.btn-outline-soft{
  display:inline-flex;align-items:center;gap:8px;
  padding:11px 26px;
  font-size:14px;font-weight:600;
  border-radius:999px;
  color:var(--primary);
  background:transparent;
  border:1px solid rgba(62,232,196,.45);
  transition:all .18s var(--ease);
}
.btn-outline-soft:hover{background:rgba(62,232,196,.12);color:var(--primary-hover);transform:translateY(-1px);}

/* 标签与分享 */
.article-foot{
  max-width:820px;margin:44px auto 0;
  padding-top:26px;
  border-top:1px solid var(--line);
  display:flex;flex-wrap:wrap;gap:20px;
  align-items:center;justify-content:space-between;
}
.tag-list{display:flex;flex-wrap:wrap;gap:8px;}
.tag-chip{
  display:inline-flex;align-items:center;
  padding:6px 14px;
  font-size:12px;letter-spacing:.02em;
  color:var(--text-2);
  background:rgba(255,255,255,.05);
  border:1px solid var(--glass-border);
  border-radius:999px;
  transition:all .18s var(--ease);
}
.tag-chip:hover{color:var(--primary);border-color:rgba(62,232,196,.4);}
.share-row{display:flex;align-items:center;gap:10px;}
.share-row span{font-size:13px;color:var(--text-3);}
.share-btn{
  width:38px;height:38px;
  display:inline-flex;align-items:center;justify-content:center;
  color:var(--text-2);
  background:rgba(255,255,255,.05);
  border:1px solid var(--glass-border);
  border-radius:12px;
  transition:all .18s var(--ease);
}
.share-btn:hover{color:var(--primary);border-color:rgba(62,232,196,.4);transform:translateY(-2px);}

/* 相关推荐 */
.related-section{margin-top:64px;}
.section-head{
  display:flex;align-items:flex-end;justify-content:space-between;gap:18px;
  margin-bottom:24px;
}
.section-head h2{font-size:24px;margin:0;}
.section-head h2 em{font-style:normal;color:var(--primary);}
.section-head .more-link{font-size:14px;color:var(--text-3);}
.section-head .more-link:hover{color:var(--primary);}
.recommend-card{
  display:block;
  height:100%;
  overflow:hidden;
  background:var(--glass);
  border:1px solid var(--glass-border);
  border-radius:var(--radius);
  box-shadow:var(--shadow);
  transition:transform .18s var(--ease),box-shadow .18s var(--ease),border-color .18s var(--ease);
}
.recommend-card:hover{
  transform:translateY(-4px);
  border-color:rgba(62,232,196,.4);
  box-shadow:0 18px 48px rgba(0,0,0,.5),0 12px 40px rgba(62,232,196,.16);
}
.recommend-thumb{
  position:relative;
  aspect-ratio:16/9;
  overflow:hidden;
  background:linear-gradient(135deg,rgba(62,232,196,.16),rgba(122,92,255,.18));
}
.recommend-thumb img{width:100%;height:100%;object-fit:cover;transition:transform .3s var(--ease);}
.recommend-card:hover .recommend-thumb img{transform:scale(1.05);}
.thumb-badge{
  position:absolute;top:12px;left:12px;
  padding:4px 11px;
  font-size:12px;letter-spacing:.02em;
  color:#3A0A18;
  background:var(--accent);
  border-radius:999px;
  font-weight:600;
}
.recommend-body{padding:16px 18px 20px;}
.recommend-body h3{
  font-size:16px;line-height:1.55;
  margin:0 0 10px;
  display:-webkit-box;
  -webkit-line-clamp:2;
  -webkit-box-orient:vertical;
  overflow:hidden;
}
.recommend-body p{
  font-size:14px;line-height:1.7;color:var(--text-3);
  margin:0;
  display:-webkit-box;
  -webkit-line-clamp:2;
  -webkit-box-orient:vertical;
  overflow:hidden;
}
.recommend-meta{
  margin-top:12px;
  font-size:13px;color:var(--text-3);
  font-variant-numeric:tabular-nums;
}
.back-row{display:flex;justify-content:center;margin-top:44px;}

/* ============ 页脚 ============ */
.site-footer{
  position:relative;z-index:1;
  margin-top:70px;
  padding:56px 0 30px;
  background:rgba(4,7,16,.85);
  border-top:1px solid var(--line);
}
.footer-grid{
  display:grid;
  grid-template-columns:1.6fr 1fr 1fr 1fr;
  gap:36px;
}
.footer-brand .brand-name{display:block;font-size:18px;font-weight:700;margin-bottom:14px;}
.footer-brand p{font-size:14px;line-height:1.8;color:var(--text-3);margin-bottom:16px;max-width:32ch;}
.footer-tags{display:flex;flex-wrap:wrap;gap:8px;}
.footer-col h4{font-size:15px;margin:0 0 16px;color:var(--text);}
.footer-col a,.footer-col span{
  display:block;
  font-size:14px;
  color:var(--text-3);
  margin-bottom:10px;
  transition:color .18s var(--ease),transform .18s var(--ease);
}
.footer-col a:hover{color:var(--primary);transform:translateX(2px);}
.footer-bottom{
  margin-top:40px;
  padding-top:22px;
  border-top:1px solid var(--line);
  display:flex;flex-wrap:wrap;gap:12px;
  align-items:center;justify-content:space-between;
  font-size:13px;color:var(--text-3);
}
.footer-bottom a{color:var(--text-3);}
.footer-bottom a:hover{color:var(--primary);}

/* ============ 移动端底部 Tab ============ */
.tab-bar{
  display:none;
  position:fixed;
  left:0;right:0;bottom:0;
  z-index:920;
  height:calc(60px + env(safe-area-inset-bottom,0px));
  padding-bottom:env(safe-area-inset-bottom,0px);
  background:rgba(9,13,28,.92);
  backdrop-filter:blur(18px) saturate(140%);
  -webkit-backdrop-filter:blur(18px) saturate(140%);
  border-top:1px solid var(--line);
}
.tab-inner{display:flex;height:60px;align-items:stretch;}
.tab-item{
  position:relative;
  flex:1;
  display:flex;flex-direction:column;align-items:center;justify-content:center;gap:3px;
  font-size:11px;
  color:#6B7793;
  transition:color .18s var(--ease);
}
.tab-item i{font-size:19px;line-height:1;}
.tab-item::before{
  content:"";
  position:absolute;top:6px;left:50%;
  width:4px;height:4px;border-radius:50%;
  background:var(--primary);
  box-shadow:0 0 8px rgba(62,232,196,.9);
  transform:translateX(-50%) scale(0);
  transition:transform .18s var(--ease);
}
.tab-item.active{color:var(--primary);}
.tab-item.active::before{transform:translateX(-50%) scale(1);}

/* ============ 响应式 ============ */
@media (max-width:991.98px){
  .nav-links{display:none;}
  .nav-cta{display:none;}
  .nav-toggle{display:inline-flex;}
  main{padding-top:96px;padding-bottom:96px;}
  body{padding-bottom:76px;}
  .tab-bar{display:block;}
  .article-head h1{font-size:27px;line-height:1.35;}
  .article-body{font-size:15px;line-height:1.8;}
  .article-body h2{font-size:21px;}
  .section-head h2{font-size:20px;}
  .footer-grid{grid-template-columns:1fr 1fr;gap:28px;}
  .footer-brand{grid-column:1/-1;}
  .footer-brand p{max-width:none;}
}
@media (max-width:575.98px){
  .container{padding-left:16px;padding-right:16px;}
  .nav-inner{padding:0 16px;}
  .brand-sub{display:none;}
  .brand-divider{display:none;}
  .article-head h1{font-size:23px;}
  .breadcrumb-bar .current{max-width:52vw;}
  .article-meta{gap:8px;}
  .section-head{flex-direction:column;align-items:flex-start;gap:8px;}
  .article-foot{flex-direction:column;align-items:flex-start;}
  .footer-grid{grid-template-columns:1fr;}
  .footer-bottom{flex-direction:column;align-items:flex-start;}
  .inline-cta{padding:18px;}
}

/* roulang page: category1 */
:root{
  --bg:#070B18;
  --bg-2:#0C1226;
  --panel:rgba(255,255,255,.06);
  --panel-strong:rgba(255,255,255,.08);
  --panel-soft:rgba(255,255,255,.04);
  --primary:#3EE8C4;
  --primary-hover:#2BD4B4;
  --primary-dim:rgba(62,232,196,.14);
  --secondary:#7A5CFF;
  --accent:#FF5C8A;
  --text:#EEF3FB;
  --text-2:#A9B5CC;
  --text-3:#6C7893;
  --line:rgba(255,255,255,.10);
  --line-soft:rgba(255,255,255,.08);
  --r-lg:22px;
  --r:18px;
  --r-sm:14px;
  --shadow-card:0 18px 48px rgba(0,0,0,.45);
  --shadow-hover:0 0 0 1px rgba(62,232,196,.35), 0 12px 40px rgba(62,232,196,.16);
  --t:180ms cubic-bezier(.22,.61,.36,1);
  --bs-body-bg:#070B18;
  --bs-body-color:#EEF3FB;
  --bs-border-color:rgba(255,255,255,.10);
  --bs-primary:#3EE8C4;
  --bs-link-color:#3EE8C4;
  --bs-link-hover-color:#2BD4B4;
  --bs-border-radius:18px;
  --bs-font-sans-serif:"PingFang SC","HarmonyOS Sans SC","Source Han Sans SC","Noto Sans SC","Microsoft YaHei",sans-serif;
}

*,*::before,*::after{box-sizing:border-box;}
html{-webkit-text-size-adjust:100%;scroll-behavior:smooth;}
body{
  margin:0;
  padding:0;
  font-family:"PingFang SC","HarmonyOS Sans SC","Source Han Sans SC","Noto Sans SC","Microsoft YaHei",sans-serif;
  font-size:16px;
  line-height:1.85;
  color:var(--text);
  background-color:var(--bg);
  background-image:linear-gradient(165deg,#070B18 0%,#0B1022 45%,#0C1226 100%);
  background-attachment:fixed;
  overflow-x:hidden;
}
body::before{
  content:"";
  position:fixed;
  inset:0;
  pointer-events:none;
  background-image:linear-gradient(rgba(255,255,255,.022) 1px,transparent 1px),linear-gradient(90deg,rgba(255,255,255,.022) 1px,transparent 1px);
  background-size:64px 64px;
  z-index:0;
}
img{max-width:100%;display:block;}
a{color:var(--primary);text-decoration:none;transition:color var(--t);}
a:hover{color:var(--primary-hover);}
h1,h2,h3,h4{color:var(--text);font-weight:700;letter-spacing:-.01em;margin:0;}
p{margin:0 0 18px;}
p:last-child{margin-bottom:0;}
ul{margin:0;padding:0;list-style:none;}
button{font-family:inherit;}
:focus-visible{outline:2px solid var(--primary);outline-offset:2px;border-radius:6px;}

.container{width:100%;max-width:1200px;margin:0 auto;padding-left:24px;padding-right:24px;}
.section{padding:88px 0;position:relative;z-index:1;}
.section-head{margin-bottom:36px;max-width:720px;}
.section-head h2{font-size:26px;line-height:1.4;margin-bottom:12px;}
.section-head p{color:var(--text-2);font-size:15px;margin:0;}
.eyebrow{
  display:inline-flex;align-items:center;gap:8px;
  font-size:12px;letter-spacing:.06em;color:var(--primary);
  background:var(--primary-dim);border:1px solid rgba(62,232,196,.28);
  padding:5px 12px;border-radius:999px;margin-bottom:16px;
}
.eyebrow i{font-size:11px;}

/* ============ 按钮 ============ */
.btn{
  display:inline-flex;align-items:center;justify-content:center;gap:8px;
  font-size:15px;font-weight:600;line-height:1;
  padding:14px 26px;border-radius:999px;border:1px solid transparent;
  cursor:pointer;transition:all var(--t);white-space:nowrap;
}
.btn-primary{
  background:var(--primary);color:#04211B;border-color:var(--primary);
  box-shadow:0 10px 26px rgba(62,232,196,.20);
}
.btn-primary:hover{background:var(--primary-hover);color:#04211B;transform:translateY(-1px);box-shadow:0 0 24px rgba(62,232,196,.35);}
.btn-primary:active{transform:translateY(0);box-shadow:0 0 12px rgba(62,232,196,.28);}
.btn-ghost{
  background:var(--panel);color:var(--text);border-color:var(--line);
}
.btn-ghost:hover{background:rgba(62,232,196,.10);color:var(--primary);border-color:rgba(62,232,196,.5);transform:translateY(-1px);}
.btn-ghost:active{transform:translateY(0);}

.chip{
  display:inline-flex;align-items:center;gap:6px;font-size:13px;color:var(--text-2);
  background:var(--panel-soft);border:1px solid var(--line-soft);
  padding:6px 14px;border-radius:999px;transition:all var(--t);
}
.chip:hover{color:var(--primary);border-color:rgba(62,232,196,.4);}

/* ============ 顶部导航 ============ */
.site-header{
  position:fixed;top:0;left:0;right:0;z-index:1040;
  height:72px;
  background:rgba(7,11,24,.72);
  backdrop-filter:blur(18px) saturate(140%);
  -webkit-backdrop-filter:blur(18px) saturate(140%);
  border-bottom:1px solid var(--line-soft);
  transition:height var(--t),background var(--t);
}
.site-header.scrolled{height:62px;background:rgba(7,11,24,.92);}
.header-inner{height:100%;display:flex;align-items:center;gap:20px;}
.brand{display:flex;align-items:center;gap:12px;flex-shrink:0;color:var(--text);}
.brand-mark{
  font-size:18px;font-weight:700;letter-spacing:-.02em;color:var(--text);
  text-shadow:0 0 18px rgba(62,232,196,.25);
}
.brand-divider{width:1px;height:18px;background:var(--line);}
.brand-sub{font-size:12px;color:var(--text-3);letter-spacing:.04em;}
.nav-links{display:flex;align-items:center;gap:6px;margin-left:auto;}
.nav-item{
  position:relative;font-size:15px;color:var(--text-2);
  padding:8px 14px;border-radius:999px;transition:all var(--t);
}
.nav-item::after{
  content:"";position:absolute;left:50%;bottom:0;width:0;height:2px;
  background:var(--primary);border-radius:2px;transform:translateX(-50%);
  transition:width var(--t);box-shadow:0 0 10px rgba(62,232,196,.7);
}
.nav-item:hover{color:var(--primary);background:rgba(62,232,196,.07);}
.nav-item:hover::after{width:22px;}
.nav-item.active{color:var(--primary);background:rgba(62,232,196,.10);}
.nav-item.active::after{width:22px;}
.header-cta{padding:11px 22px;font-size:14px;margin-left:14px;}
.nav-toggle{
  display:none;width:42px;height:42px;border-radius:12px;
  background:var(--panel);border:1px solid var(--line-soft);
  align-items:center;justify-content:center;flex-direction:column;gap:5px;
  margin-left:auto;cursor:pointer;
}
.nav-toggle span{display:block;width:18px;height:2px;background:var(--text);border-radius:2px;transition:all var(--t);}
.nav-toggle.open span:nth-child(1){transform:translateY(7px) rotate(45deg);}
.nav-toggle.open span:nth-child(2){opacity:0;}
.nav-toggle.open span:nth-child(3){transform:translateY(-7px) rotate(-45deg);}

/* ============ Hero ============ */
.hero{position:relative;padding:152px 0 76px;overflow:hidden;}
.hero-bg{
  position:absolute;inset:0;
  background-image:url("/assets/images/backpic/back-1.webp");
  background-size:cover;background-position:center;
  opacity:.30;
  mask-image:linear-gradient(180deg,rgba(0,0,0,.9) 0%,rgba(0,0,0,.35) 62%,transparent 100%);
  -webkit-mask-image:linear-gradient(180deg,rgba(0,0,0,.9) 0%,rgba(0,0,0,.35) 62%,transparent 100%);
}
.hero::after{
  content:"";position:absolute;inset:0;
  background:linear-gradient(180deg,rgba(7,11,24,.86) 0%,rgba(7,11,24,.72) 45%,rgba(7,11,24,.96) 100%);
}
.hero-inner{position:relative;z-index:2;display:grid;grid-template-columns:1.35fr .9fr;gap:48px;align-items:center;}
.hero h1{font-size:34px;line-height:1.3;letter-spacing:-.02em;margin-bottom:16px;}
.hero-sub{font-size:17px;color:var(--text-2);max-width:520px;margin-bottom:28px;}
.hero-actions{display:flex;gap:14px;flex-wrap:wrap;margin-bottom:26px;}
.chip-row{display:flex;gap:10px;flex-wrap:wrap;}
.hero-visual{
  position:relative;border-radius:var(--r-lg);overflow:hidden;
  border:1px solid var(--line);
  background:var(--panel);
  box-shadow:var(--shadow-card),0 0 60px rgba(62,232,196,.10);
  aspect-ratio:9/16;max-height:480px;justify-self:end;width:100%;
}
.hero-visual img{width:100%;height:100%;object-fit:cover;}
.hero-visual::after{
  content:"";position:absolute;inset:0;
  background:linear-gradient(180deg,rgba(7,11,24,.05) 0%,rgba(7,11,24,.55) 100%);
}
.hero-badge{
  position:absolute;left:16px;bottom:16px;right:16px;z-index:3;
  display:flex;gap:8px;flex-wrap:wrap;
}
.hero-badge span{
  font-size:12px;padding:5px 12px;border-radius:999px;color:var(--text);
  background:rgba(7,11,24,.6);border:1px solid var(--line);
  backdrop-filter:blur(10px);
}

/* ============ 编号清单 ============ */
.steps{display:grid;grid-template-columns:1fr 1fr;gap:0 48px;}
.step-row{
  display:flex;gap:20px;align-items:flex-start;
  padding:22px 0;border-bottom:1px dashed var(--line-soft);
}
.step-num{
  font-size:30px;font-weight:700;line-height:1;color:transparent;
  -webkit-text-stroke:1.2px rgba(62,232,196,.75);
  font-variant-numeric:tabular-nums;flex-shrink:0;min-width:52px;
}
.step-body h3{font-size:18px;margin-bottom:6px;}
.step-body p{font-size:13.5px;color:var(--text-2);margin:0;}

/* ============ 渠道区：筛选 + 网格 ============ */
.channels-layout{display:grid;grid-template-columns:3fr 9fr;gap:28px;align-items:start;}
.filter-panel{
  position:sticky;top:96px;
  background:var(--panel);border:1px solid var(--line);border-radius:var(--r);
  padding:22px;backdrop-filter:blur(18px) saturate(140%);
  box-shadow:var(--shadow-card);
}
.filter-panel h3{font-size:16px;margin-bottom:16px;}
.filter-group{margin-bottom:20px;}
.filter-group:last-of-type{margin-bottom:8px;}
.filter-label{font-size:12px;color:var(--text-3);letter-spacing:.06em;margin-bottom:10px;display:block;}
.filter-chips{display:flex;flex-wrap:wrap;gap:8px;}
.filter-chip{
  font-size:13px;color:var(--text-2);background:var(--panel-soft);
  border:1px solid var(--line-soft);border-radius:999px;padding:6px 14px;
  cursor:pointer;transition:all var(--t);
}
.filter-chip:hover{color:var(--primary);border-color:rgba(62,232,196,.4);}
.filter-chip.active{background:var(--primary);color:#04211B;border-color:var(--primary);font-weight:600;}
.filter-reset{
  font-size:13px;color:var(--text-3);background:none;border:none;padding:0;
  cursor:pointer;border-bottom:1px dashed var(--line);transition:all var(--t);
}
.filter-reset:hover{color:var(--primary);border-color:var(--primary);}

.card-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:20px;}
.entry-card{
  background:var(--panel-soft);border:1px solid var(--line-soft);border-radius:var(--r);
  overflow:hidden;transition:all var(--t);display:flex;flex-direction:column;
}
.entry-card:hover{transform:translateY(-4px);box-shadow:var(--shadow-hover);border-color:rgba(62,232,196,.35);}
.entry-thumb{position:relative;aspect-ratio:3/4;overflow:hidden;background:linear-gradient(150deg,#121A33,#0A0F1F);}
.entry-thumb img{width:100%;height:100%;object-fit:cover;transition:transform 400ms cubic-bezier(.22,.61,.36,1);}
.entry-card:hover .entry-thumb img{transform:scale(1.04);}
.thumb-tag{
  position:absolute;top:12px;left:12px;font-size:12px;letter-spacing:.02em;
  background:rgba(7,11,24,.72);border:1px solid var(--line);color:var(--text);
  padding:4px 10px;border-radius:999px;backdrop-filter:blur(8px);
}
.thumb-hot{
  position:absolute;top:12px;right:12px;font-size:12px;font-weight:600;
  background:var(--accent);color:#2B0716;padding:4px 10px;border-radius:999px;
}
.entry-body{padding:16px 16px 20px;}
.entry-body h3{font-size:16px;line-height:1.5;margin-bottom:8px;}
.entry-body p{font-size:13.5px;color:var(--text-2);margin:0;display:-webkit-box;-webkit-line-clamp:2;-webkit-box-orient:vertical;overflow:hidden;}

.load-more-wrap{display:flex;justify-content:center;margin-top:32px;}

/* ============ 口碑条 ============ */
.review-strip{margin-top:36px;}
.review-track{
  display:flex;gap:16px;overflow-x:auto;padding:4px 4px 16px;
  scroll-snap-type:x mandatory;scrollbar-width:thin;
}
.review-track::-webkit-scrollbar{height:6px;}
.review-track::-webkit-scrollbar-thumb{background:rgba(255,255,255,.12);border-radius:6px;}
.review-card{
  flex:0 0 280px;scroll-snap-align:start;
  background:var(--panel);border:1px solid var(--line);border-radius:16px;
  padding:16px 18px;backdrop-filter:blur(14px);
}
.review-top{display:flex;align-items:center;gap:10px;margin-bottom:10px;}
.avatar{
  width:32px;height:32px;border-radius:50%;flex-shrink:0;
  background:var(--panel-strong);border:1px solid var(--line);
  display:flex;align-items:center;justify-content:center;
  font-size:13px;color:var(--primary);font-weight:600;
}
.review-name{font-size:13px;color:var(--text-2);}
.review-text{font-size:14px;color:var(--text);line-height:1.7;display:-webkit-box;-webkit-line-clamp:2;-webkit-box-orient:vertical;overflow:hidden;}
.review-stars{margin-top:10px;font-size:12px;color:var(--primary);letter-spacing:1px;}

/* ============ FAQ ============ */
.faq-accordion{display:flex;flex-direction:column;gap:14px;max-width:900px;}
.faq-accordion .accordion-item{
  background:var(--panel-soft);border:1px solid var(--line-soft);
  border-radius:var(--r-sm);overflow:hidden;transition:border-color var(--t);
}
.faq-accordion .accordion-item:has(.accordion-button:not(.collapsed)){
  border-color:rgba(62,232,196,.45);background:rgba(62,232,196,.05);
}
.faq-accordion .accordion-button{
  background:transparent;color:var(--text);font-size:16px;font-weight:600;
  padding:18px 22px;box-shadow:none;border:none;text-align:left;line-height:1.6;
}
.faq-accordion .accordion-button:not(.collapsed){color:var(--primary);background:transparent;box-shadow:none;}
.faq-accordion .accordion-button:focus{box-shadow:none;outline:none;}
.faq-accordion .accordion-button:focus-visible{outline:2px solid var(--primary);outline-offset:-4px;border-radius:12px;}
.faq-accordion .accordion-button::after{
  background-image:none;content:"+";font-size:20px;font-weight:400;
  width:24px;height:24px;display:flex;align-items:center;justify-content:center;
  color:var(--primary);transform:none;transition:transform var(--t);flex-shrink:0;
}
.faq-accordion .accordion-button:not(.collapsed)::after{content:"−";transform:rotate(180deg);}
.faq-accordion .accordion-body{font-size:15px;color:var(--text-2);padding:0 22px 20px;line-height:1.8;}

/* ============ CTA ============ */
.cta-panel{
  display:flex;align-items:center;justify-content:space-between;gap:32px;
  background:var(--panel);border:1px solid var(--line);border-radius:var(--r-lg);
  padding:40px 44px;backdrop-filter:blur(18px) saturate(140%);
  box-shadow:var(--shadow-card);position:relative;overflow:hidden;
}
.cta-panel::before{
  content:"";position:absolute;right:-80px;top:-80px;width:280px;height:280px;border-radius:50%;
  background:radial-gradient(circle,rgba(122,92,255,.35),transparent 70%);
}
.cta-copy{position:relative;z-index:2;max-width:600px;}
.cta-copy h2{font-size:24px;margin-bottom:10px;}
.cta-copy p{color:var(--text-2);font-size:15px;margin:0;}
.cta-actions{position:relative;z-index:2;display:flex;gap:14px;flex-wrap:wrap;}

/* ============ 页脚 ============ */
.site-footer{
  position:relative;z-index:1;margin-top:20px;
  background:rgba(5,8,17,.86);
  border-top:1px solid var(--line-soft);
  padding:64px 0 28px;
}
.footer-grid{display:grid;grid-template-columns:1.6fr 1fr 1fr 1.2fr;gap:40px;}
.footer-brand .brand-name{
  display:block;font-size:18px;font-weight:700;color:var(--text);margin-bottom:14px;
}
.footer-brand p{font-size:13.5px;color:var(--text-2);line-height:1.8;margin-bottom:16px;max-width:320px;}
.footer-tags{display:flex;gap:8px;flex-wrap:wrap;}
.tag-chip{font-size:12px;color:var(--text-2);background:var(--panel-soft);border:1px solid var(--line-soft);padding:4px 12px;border-radius:999px;}
.footer-col h4{font-size:14px;color:var(--text);margin-bottom:16px;letter-spacing:.02em;}
.footer-col a,.footer-col span{
  display:block;font-size:13.5px;color:var(--text-2);margin-bottom:10px;
  transition:all var(--t);position:relative;width:fit-content;
}
.footer-col a::after{
  content:"";position:absolute;left:0;bottom:-2px;width:0;height:2px;
  background:var(--primary);transition:width var(--t);
}
.footer-col a:hover{color:var(--primary);transform:translateX(2px);}
.footer-col a:hover::after{width:100%;}
.footer-bottom{
  margin-top:44px;padding-top:22px;border-top:1px solid var(--line-soft);
  display:flex;justify-content:space-between;gap:16px;flex-wrap:wrap;
  font-size:13px;color:var(--text-3);
}
.footer-bottom a{color:var(--text-3);}
.footer-bottom a:hover{color:var(--primary);}

/* ============ 移动端底部 Tab ============ */
.mobile-tab{
  display:none;position:fixed;left:0;right:0;bottom:0;z-index:1050;
  height:calc(60px + env(safe-area-inset-bottom));
  padding-bottom:env(safe-area-inset-bottom);
  background:rgba(7,11,24,.88);
  backdrop-filter:blur(18px) saturate(140%);
  border-top:1px solid var(--line-soft);
  align-items:stretch;
}
.tab-item{
  flex:1;display:flex;flex-direction:column;align-items:center;justify-content:center;gap:3px;
  font-size:10.5px;color:#6B7793;position:relative;transition:color var(--t);
}
.tab-item i{font-size:17px;}
.tab-item::before{
  content:"";position:absolute;top:6px;width:5px;height:5px;border-radius:50%;
  background:var(--primary);opacity:0;transition:opacity var(--t);
  box-shadow:0 0 10px rgba(62,232,196,.9);
}
.tab-item.active{color:var(--primary);}
.tab-item.active::before{opacity:1;}

/* ============ 入场动画 ============ */
.reveal{opacity:0;transform:translateY(16px);transition:opacity 500ms cubic-bezier(.22,.61,.36,1),transform 500ms cubic-bezier(.22,.61,.36,1);}
.reveal.in-view{opacity:1;transform:translateY(0);}

/* ============ 响应式 ============ */
@media (max-width:1199px){
  .hero h1{font-size:31px;}
}
@media (max-width:991px){
  .nav-links{
    position:fixed;top:72px;left:0;right:0;
    flex-direction:column;align-items:stretch;gap:4px;
    background:rgba(9,13,28,.97);backdrop-filter:blur(18px);
    border-bottom:1px solid var(--line);
    padding:16px 24px 22px;
    transform:translateY(-12px);opacity:0;pointer-events:none;
    transition:all var(--t);
  }
  .nav-links.open{transform:translateY(0);opacity:1;pointer-events:auto;}
  .nav-item{padding:12px 14px;font-size:15px;}
  .nav-item::after{display:none;}
  .nav-toggle{display:flex;}
  .header-cta{display:none;}
  .brand-sub{display:none;}
  .hero{padding:120px 0 56px;}
  .hero-inner{grid-template-columns:1fr;gap:32px;}
  .hero-visual{max-height:380px;justify-self:stretch;max-width:320px;}
  .section{padding:64px 0;}
  .steps{grid-template-columns:1fr;gap:0;}
  .channels-layout{grid-template-columns:1fr;}
  .filter-panel{position:static;}
  .card-grid{grid-template-columns:repeat(2,1fr);}
  .cta-panel{flex-direction:column;align-items:flex-start;padding:32px 28px;}
  .footer-grid{grid-template-columns:1fr 1fr;gap:32px;}
  .mobile-tab{display:flex;}
  body{padding-bottom:76px;}
}
@media (max-width:575px){
  .container{padding-left:16px;padding-right:16px;}
  .hero h1{font-size:27px;line-height:1.35;}
  .hero-sub{font-size:15px;}
  .hero-actions{flex-direction:column;align-items:stretch;}
  .hero-actions .btn{width:100%;}
  .hero-visual{max-width:100%;max-height:420px;}
  .section{padding:56px 0;}
  .section-head h2{font-size:21px;}
  .card-grid{grid-template-columns:1fr;}
  .step-num{font-size:26px;min-width:44px;}
  .cta-copy h2{font-size:20px;}
  .cta-actions{flex-direction:column;align-items:stretch;width:100%;}
  .cta-actions .btn{width:100%;}
  .footer-grid{grid-template-columns:1fr;gap:28px;}
  .footer-bottom{flex-direction:column;gap:10px;}
}
@media (prefers-reduced-motion:reduce){
  *{animation:none!important;transition:none!important;}
  .reveal{opacity:1;transform:none;}
}

/* roulang page: category2 */
:root{
  --bg-deep:#070B18;
  --bg-soft:#0C1226;
  --glass:rgba(255,255,255,.05);
  --glass-mid:rgba(255,255,255,.07);
  --glass-strong:rgba(255,255,255,.09);
  --line:rgba(255,255,255,.08);
  --line-strong:rgba(255,255,255,.16);
  --primary:#3EE8C4;
  --primary-hover:#2BD4B4;
  --secondary:#7A5CFF;
  --accent:#FF5C8A;
  --text:#EEF3FB;
  --text-sub:#A9B5CC;
  --text-weak:#6C7893;
  --r-xl:22px;
  --r-lg:18px;
  --r-md:14px;
  --shadow-card:0 18px 48px rgba(0,0,0,.45);
  --shadow-glow:0 12px 40px rgba(62,232,196,.16);
  --ease:180ms cubic-bezier(.22,.61,.36,1);
  --header-h:72px;

  --bs-primary:#3EE8C4;
  --bs-body-bg:#070B18;
  --bs-body-color:#EEF3FB;
  --bs-border-color:rgba(255,255,255,.08);
  --bs-link-color:#3EE8C4;
  --bs-link-hover-color:#2BD4B4;
  --bs-border-radius:18px;
  --bs-border-radius-lg:22px;
  --bs-border-radius-sm:14px;
  --bs-font-sans-serif:'PingFang SC','HarmonyOS Sans SC','Source Han Sans SC','Noto Sans SC','Microsoft YaHei',sans-serif;
}

*,*::before,*::after{box-sizing:border-box}
html{-webkit-text-size-adjust:100%}
body{
  margin:0;
  padding-top:var(--header-h);
  font-family:'PingFang SC','HarmonyOS Sans SC','Source Han Sans SC','Noto Sans SC','Microsoft YaHei',sans-serif;
  font-size:16px;
  line-height:1.85;
  color:var(--text);
  background:linear-gradient(165deg,#070B18 0%,#0C1226 100%);
  background-attachment:fixed;
  -webkit-font-smoothing:antialiased;
  overflow-x:hidden;
}
body::before{
  content:"";
  position:fixed;
  inset:0;
  pointer-events:none;
  z-index:0;
  opacity:.03;
  background-image:linear-gradient(rgba(255,255,255,.6) 1px,transparent 1px),linear-gradient(90deg,rgba(255,255,255,.6) 1px,transparent 1px);
  background-size:64px 64px;
}
img{max-width:100%;display:block;height:auto}
a{color:var(--primary);text-decoration:none;transition:color var(--ease)}
a:hover{color:var(--primary-hover)}
button{font-family:inherit}
h1,h2,h3,h4{margin:0;font-weight:700;letter-spacing:-.02em}
p{margin:0}
ul{margin:0;padding:0;list-style:none}
::selection{background:rgba(62,232,196,.3);color:#fff}

.container{
  width:100%;
  max-width:1200px;
  margin:0 auto;
  padding-left:24px;
  padding-right:24px;
  position:relative;
  z-index:1;
}

/* ============ HEADER ============ */
.site-header{
  position:fixed;
  top:0;left:0;right:0;
  z-index:1030;
  height:var(--header-h);
  background:rgba(9,13,28,.72);
  backdrop-filter:blur(18px) saturate(140%);
  -webkit-backdrop-filter:blur(18px) saturate(140%);
  border-bottom:1px solid var(--line);
  transition:height var(--ease),background var(--ease);
}
.site-header.shrink{background:rgba(9,13,28,.92)}
.header-inner{
  height:100%;
  display:flex;
  align-items:center;
  gap:24px;
}
.brand{
  display:flex;
  align-items:center;
  gap:12px;
  flex-shrink:0;
  color:var(--text);
}
.brand:hover{color:var(--text)}
.brand-mark{
  font-size:18px;
  font-weight:700;
  letter-spacing:-.02em;
  color:var(--text);
  text-shadow:0 0 18px rgba(62,232,196,.45);
}
.brand-divider{
  width:1px;height:18px;
  background:var(--line-strong);
}
.brand-sub{
  font-size:13px;
  color:var(--text-weak);
  font-weight:400;
  letter-spacing:0;
}
.nav-links{
  display:flex;
  align-items:center;
  gap:8px;
  margin-left:auto;
}
.nav-item{
  position:relative;
  display:inline-block;
  padding:8px 14px;
  font-size:15px;
  color:var(--text-sub);
  border-radius:999px;
  transition:color var(--ease),background var(--ease);
}
.nav-item::after{
  content:"";
  position:absolute;
  left:14px;right:14px;bottom:2px;
  height:2px;
  border-radius:2px;
  background:var(--primary);
  box-shadow:0 0 10px rgba(62,232,196,.8);
  transform:scaleX(0);
  transform-origin:center;
  transition:transform var(--ease);
}
.nav-item:hover{color:var(--primary)}
.nav-item:hover::after{transform:scaleX(1)}
.nav-item.active{color:var(--primary)}
.nav-item.active::after{transform:scaleX(1)}
.btn-cta-glow{
  display:inline-flex;
  align-items:center;
  gap:8px;
  padding:10px 20px;
  border-radius:999px;
  font-size:14px;
  font-weight:600;
  color:#04150F;
  background:linear-gradient(135deg,var(--primary),#2AD9C0);
  box-shadow:0 0 24px rgba(62,232,196,.32);
  border:none;
  white-space:nowrap;
  transition:transform var(--ease),box-shadow var(--ease),filter var(--ease);
}
.btn-cta-glow:hover{
  color:#04150F;
  transform:translateY(-1px);
  filter:brightness(1.08);
  box-shadow:0 0 30px rgba(62,232,196,.45);
}
.btn-cta-glow:active{transform:translateY(0);box-shadow:0 0 16px rgba(62,232,196,.28)}
.btn-cta-glow:focus-visible{outline:2px solid var(--primary);outline-offset:2px}
.nav-toggle{
  display:none;
  width:42px;height:42px;
  border:1px solid var(--line-strong);
  border-radius:12px;
  background:var(--glass);
  color:var(--text);
  align-items:center;
  justify-content:center;
  cursor:pointer;
  transition:border-color var(--ease),background var(--ease);
}
.nav-toggle:hover{border-color:rgba(62,232,196,.5);background:var(--glass-strong)}
.nav-toggle svg{width:20px;height:20px}
.mobile-drawer{
  display:none;
  position:fixed;
  top:var(--header-h);left:0;right:0;
  background:rgba(9,13,28,.97);
  backdrop-filter:blur(18px);
  border-bottom:1px solid var(--line);
  padding:16px 24px 24px;
  z-index:1029;
}
.mobile-drawer.open{display:block}
.mobile-drawer a{
  display:block;
  padding:14px 4px;
  font-size:16px;
  color:var(--text-sub);
  border-bottom:1px dashed var(--line);
}
.mobile-drawer a:last-of-type{border-bottom:none}
.mobile-drawer a.active{color:var(--primary)}
.mobile-drawer .drawer-cta{
  margin-top:16px;
  display:flex;
  justify-content:center;
  width:100%;
}

/* ============ HERO (category2) ============ */
.cat-hero{
  position:relative;
  padding:72px 0 56px;
  overflow:hidden;
  border-bottom:1px solid var(--line);
}
.cat-hero::before{
  content:"";
  position:absolute;
  inset:0;
  background:
    radial-gradient(80% 120% at 50% -20%,rgba(122,92,255,.28) 0%,transparent 62%),
    radial-gradient(60% 90% at 88% 10%,rgba(62,232,196,.16) 0%,transparent 60%);
  pointer-events:none;
}
.cat-hero::after{
  content:"";
  position:absolute;
  inset:0;
  opacity:.05;
  pointer-events:none;
  background-image:linear-gradient(rgba(255,255,255,.9) 1px,transparent 1px),linear-gradient(90deg,rgba(255,255,255,.9) 1px,transparent 1px);
  background-size:40px 40px;
  mask-image:radial-gradient(70% 80% at 50% 20%,#000 0%,transparent 78%);
  -webkit-mask-image:radial-gradient(70% 80% at 50% 20%,#000 0%,transparent 78%);
}
.cat-hero .container{position:relative;z-index:2;text-align:center}
.hero-badge{
  position:absolute;
  left:24px;
  top:-8px;
  font-size:40px;
  font-weight:700;
  letter-spacing:-.04em;
  color:transparent;
  -webkit-text-stroke:1.5px rgba(62,232,196,.55);
  line-height:1;
  font-variant-numeric:tabular-nums;
  user-select:none;
}
.cat-hero h1{
  font-size:34px;
  line-height:1.3;
  max-width:900px;
  margin:0 auto;
  background:linear-gradient(120deg,#FFFFFF 20%,#BFE9E0 60%,#3EE8C4 100%);
  -webkit-background-clip:text;
  background-clip:text;
  color:transparent;
}
.hero-sub{
  margin-top:16px;
  font-size:15px;
  color:var(--text-sub);
}
.hero-note{
  margin-top:10px;
  font-size:13px;
  color:var(--text-weak);
}
.hero-chips{
  display:flex;
  flex-wrap:wrap;
  justify-content:center;
  gap:10px;
  margin-top:26px;
}
.tag-chip{
  display:inline-flex;
  align-items:center;
  padding:6px 14px;
  font-size:12px;
  letter-spacing:.02em;
  color:var(--text-sub);
  background:var(--glass);
  border:1px solid var(--line);
  border-radius:999px;
  transition:border-color var(--ease),color var(--ease);
}
.tag-chip:hover{border-color:rgba(62,232,196,.45);color:var(--primary)}

/* ============ STICKY ANCHOR TABS ============ */
.anchor-bar{
  position:sticky;
  top:var(--header-h);
  z-index:1020;
  background:rgba(9,13,28,.86);
  backdrop-filter:blur(18px) saturate(140%);
  -webkit-backdrop-filter:blur(18px) saturate(140%);
  border-bottom:1px solid var(--line);
  transition:box-shadow var(--ease),background var(--ease);
}
.anchor-bar.stuck{box-shadow:0 14px 34px rgba(0,0,0,.45)}
.anchor-scroll{
  display:flex;
  gap:10px;
  padding:12px 0;
  overflow-x:auto;
  scrollbar-width:none;
  -ms-overflow-style:none;
}
.anchor-scroll::-webkit-scrollbar{display:none}
.anchor-pill{
  flex:0 0 auto;
  padding:9px 18px;
  font-size:14px;
  color:var(--text-sub);
  background:var(--glass);
  border:1px solid var(--line);
  border-radius:999px;
  white-space:nowrap;
  cursor:pointer;
  transition:all var(--ease);
}
.anchor-pill:hover{color:var(--primary);border-color:rgba(62,232,196,.45);transform:translateY(-1px)}
.anchor-pill.active{
  color:#04150F;
  font-weight:600;
  background:linear-gradient(135deg,var(--primary),#2AD9C0);
  border-color:transparent;
  box-shadow:0 0 22px rgba(62,232,196,.3);
}

/* ============ SECTIONS ============ */
.section{padding:88px 0}
.section-tight{padding:72px 0}
.sec-head{margin-bottom:36px}
.sec-eyebrow{
  display:inline-flex;
  align-items:center;
  gap:8px;
  font-size:12px;
  letter-spacing:.08em;
  color:var(--primary);
  text-transform:uppercase;
  margin-bottom:12px;
}
.sec-eyebrow::before{
  content:"";
  width:18px;height:2px;
  background:var(--primary);
  box-shadow:0 0 10px rgba(62,232,196,.7);
}
.sec-head h2{font-size:26px;line-height:1.4}
.sec-head p{margin-top:12px;font-size:15px;color:var(--text-sub);max-width:760px}
.text-center .sec-head p{margin-left:auto;margin-right:auto}

/* 概览数据卡 */
.stat-grid{
  display:grid;
  grid-template-columns:repeat(4,1fr);
  gap:20px;
}
.stat-card{
  padding:24px 22px;
  border-radius:var(--r-lg);
  background:linear-gradient(180deg,rgba(255,255,255,.07),rgba(255,255,255,.03));
  border:1px solid var(--line);
  box-shadow:inset 0 1px 0 rgba(255,255,255,.08);
  transition:transform var(--ease),box-shadow var(--ease),border-color var(--ease);
}
.stat-card:hover{
  transform:translateY(-2px);
  border-color:rgba(62,232,196,.35);
  box-shadow:var(--shadow-glow);
}
.stat-num{
  font-size:30px;
  font-weight:700;
  color:var(--primary);
  line-height:1.2;
  font-variant-numeric:tabular-nums;
}
.stat-num small{font-size:15px;font-weight:500;color:var(--text-sub);margin-left:2px}
.stat-label{margin-top:8px;font-size:14px;color:var(--text)}
.stat-desc{margin-top:6px;font-size:13px;color:var(--text-weak);line-height:1.6}

/* ============ 编号清单 ============ */
.list-wrap{display:flex;flex-direction:column}
.list-row{
  display:flex;
  align-items:center;
  gap:22px;
  padding:26px 20px;
  border-bottom:1px dashed var(--line);
  border-radius:var(--r-lg);
  transition:background var(--ease),transform var(--ease),box-shadow var(--ease);
}
.list-row:first-child{border-top:1px dashed var(--line)}
.list-row:hover{
  background:var(--glass);
  transform:translateX(4px);
  box-shadow:var(--shadow-glow);
}
.row-index{
  flex:0 0 auto;
  width:56px;
  font-size:24px;
  font-weight:700;
  color:transparent;
  -webkit-text-stroke:1.2px rgba(62,232,196,.6);
  font-variant-numeric:tabular-nums;
  letter-spacing:-.02em;
  text-align:center;
  line-height:1;
}
.row-thumb{
  flex:0 0 auto;
  width:120px;
  aspect-ratio:3/4;
  border-radius:14px;
  overflow:hidden;
  background:linear-gradient(150deg,rgba(122,92,255,.35),rgba(62,232,196,.18));
  border:1px solid var(--line);
  position:relative;
}
.row-thumb img{
  width:100%;height:100%;
  object-fit:cover;
}
.row-body{flex:1 1 auto;min-width:0}
.row-body h3{
  font-size:20px;
  line-height:1.5;
  overflow:hidden;
  display:-webkit-box;
  -webkit-line-clamp:2;
  -webkit-box-orient:vertical;
}
.row-body p{
  margin-top:8px;
  font-size:14px;
  line-height:1.75;
  color:var(--text-sub);
  overflow:hidden;
  display:-webkit-box;
  -webkit-line-clamp:2;
  -webkit-box-orient:vertical;
}
.row-tags{
  display:flex;
  flex-wrap:wrap;
  gap:8px;
  margin-top:12px;
}
.mini-tag{
  font-size:12px;
  padding:4px 10px;
  border-radius:999px;
  color:var(--text-weak);
  background:var(--glass);
  border:1px solid var(--line);
}
.mini-tag.hot{color:var(--accent);border-color:rgba(255,92,138,.35);background:rgba(255,92,138,.08)}
.row-arrow{
  flex:0 0 auto;
  width:38px;height:38px;
  display:flex;align-items:center;justify-content:center;
  border-radius:50%;
  border:1px solid var(--line-strong);
  color:var(--text-sub);
  transition:all var(--ease);
}
.row-arrow svg{width:16px;height:16px}
.list-row:hover .row-arrow{
  color:#04150F;
  background:var(--primary);
  border-color:transparent;
  box-shadow:0 0 20px rgba(62,232,196,.4);
}

/* ============ 场景错落两列 ============ */
.scene-grid{
  display:grid;
  grid-template-columns:repeat(2,1fr);
  gap:24px;
}
.scene-card{
  padding:28px 26px;
  border-radius:var(--r-xl);
  background:linear-gradient(180deg,rgba(255,255,255,.06),rgba(255,255,255,.02));
  border:1px solid var(--line);
  box-shadow:inset 0 1px 0 rgba(255,255,255,.08),var(--shadow-card);
  transition:transform var(--ease),border-color var(--ease),box-shadow var(--ease);
}
.scene-card:hover{
  transform:translateY(-3px);
  border-color:rgba(62,232,196,.35);
  box-shadow:inset 0 1px 0 rgba(255,255,255,.08),var(--shadow-glow);
}
.scene-card h3{font-size:19px;margin-bottom:10px}
.scene-card p{font-size:14px;color:var(--text-sub);line-height:1.8}
.scene-card:nth-child(2){margin-top:28px}
.scene-card:nth-child(3){margin-top:-14px}
.scene-icon{
  width:42px;height:42px;
  display:flex;align-items:center;justify-content:center;
  border-radius:12px;
  margin-bottom:16px;
  color:var(--primary);
  background:rgba(62,232,196,.1);
  border:1px solid rgba(62,232,196,.28);
}
.scene-icon svg{width:20px;height:20px}

/* ============ 证据条 ============ */
.proof-band{
  border-radius:var(--r-xl);
  border:1px solid var(--line);
  background:linear-gradient(120deg,rgba(122,92,255,.14),rgba(62,232,196,.08));
  padding:34px 32px;
  display:grid;
  grid-template-columns:1.2fr 1fr;
  gap:32px;
  align-items:center;
}
.proof-band h2{font-size:24px}
.proof-band p{margin-top:12px;font-size:14px;color:var(--text-sub);line-height:1.8}
.proof-metrics{display:grid;grid-template-columns:repeat(2,1fr);gap:18px}
.proof-metric{
  padding:16px 18px;
  border-radius:var(--r-md);
  background:rgba(255,255,255,.05);
  border:1px solid var(--line);
}
.proof-metric b{
  display:block;
  font-size:22px;
  color:var(--primary);
  font-variant-numeric:tabular-nums;
  line-height:1.3;
}
.proof-metric span{font-size:13px;color:var(--text-weak)}

/* ============ FAQ ============ */
.faq-list{display:flex;flex-direction:column;gap:12px;max-width:900px;margin:0 auto}
.faq-item{
  border-radius:var(--r-lg);
  border:1px solid var(--line);
  background:var(--glass);
  overflow:hidden;
  transition:border-color var(--ease),background var(--ease);
}
.faq-item:has(.accordion-button:not(.collapsed)){border-color:rgba(62,232,196,.45)}
.accordion-button{
  width:100%;
  display:flex;
  align-items:center;
  justify-content:space-between;
  gap:16px;
  padding:18px 22px;
  font-size:16px;
  font-weight:600;
  color:var(--text);
  background:transparent;
  border:none;
  text-align:left;
  cursor:pointer;
  box-shadow:none !important;
  transition:color var(--ease);
}
.accordion-button:hover{color:var(--primary)}
.accordion-button:focus-visible{outline:2px solid var(--primary);outline-offset:-2px}
.accordion-button::after{content:none}
.faq-sign{
  flex:0 0 auto;
  width:26px;height:26px;
  display:flex;align-items:center;justify-content:center;
  border-radius:50%;
  border:1px solid var(--line-strong);
  color:var(--primary);
  font-size:16px;
  line-height:1;
  transition:transform var(--ease),background var(--ease),color var(--ease);
}
.accordion-button:not(.collapsed) .faq-sign{
  transform:rotate(180deg);
  background:var(--primary);
  color:#04150F;
  border-color:transparent;
}
.faq-body{
  padding:0 22px 20px 22px;
  font-size:15px;
  line-height:1.8;
  color:var(--text-sub);
}
.accordion-collapse{transition:height var(--ease)}

/* ============ CTA ============ */
.cta-band{
  border-radius:var(--r-xl);
  border:1px solid var(--line);
  background:linear-gradient(120deg,rgba(62,232,196,.14),rgba(122,92,255,.16));
  padding:40px 36px;
  display:flex;
  align-items:center;
  justify-content:space-between;
  gap:28px;
  box-shadow:inset 0 1px 0 rgba(255,255,255,.08),var(--shadow-card);
}
.cta-band h2{font-size:24px}
.cta-band p{margin-top:10px;font-size:14px;color:var(--text-sub);max-width:560px}
.cta-actions{display:flex;gap:14px;flex-wrap:wrap}
.btn-primary-pill{
  display:inline-flex;
  align-items:center;
  gap:8px;
  padding:13px 26px;
  border-radius:999px;
  font-size:15px;
  font-weight:600;
  color:#04150F;
  background:linear-gradient(135deg,var(--primary),#2AD9C0);
  border:none;
  box-shadow:0 0 24px rgba(62,232,196,.32);
  transition:transform var(--ease),box-shadow var(--ease),filter var(--ease);
}
.btn-primary-pill:hover{
  color:#04150F;
  transform:translateY(-1px);
  filter:brightness(1.08);
  box-shadow:0 0 32px rgba(62,232,196,.45);
}
.btn-primary-pill:active{transform:translateY(0)}
.btn-primary-pill:focus-visible{outline:2px solid var(--primary);outline-offset:3px}
.btn-ghost-pill{
  display:inline-flex;
  align-items:center;
  gap:8px;
  padding:13px 26px;
  border-radius:999px;
  font-size:15px;
  font-weight:600;
  color:var(--text);
  background:var(--glass);
  border:1px solid var(--line-strong);
  transition:all var(--ease);
}
.btn-ghost-pill:hover{
  color:var(--primary);
  border-color:rgba(62,232,196,.5);
  transform:translateY(-1px);
  box-shadow:0 0 20px rgba(62,232,196,.16);
}
.btn-ghost-pill:focus-visible{outline:2px solid var(--primary);outline-offset:3px}

/* ============ FOOTER ============ */
.site-footer{
  margin-top:32px;
  border-top:1px solid var(--line);
  background:rgba(5,8,18,.85);
  padding:56px 0 28px;
  position:relative;
  z-index:1;
}
.footer-grid{
  display:grid;
  grid-template-columns:1.5fr 1fr 1fr 1.1fr;
  gap:36px;
}
.footer-brand .brand-name{
  font-size:18px;
  font-weight:700;
  color:var(--text);
  text-shadow:0 0 18px rgba(62,232,196,.4);
}
.footer-brand p{
  margin-top:14px;
  font-size:14px;
  color:var(--text-sub);
  line-height:1.8;
  max-width:340px;
}
.footer-tags{display:flex;flex-wrap:wrap;gap:8px;margin-top:16px}
.footer-col h4{
  font-size:15px;
  margin-bottom:16px;
  color:var(--text);
}
.footer-col a,.footer-col span{
  display:block;
  font-size:14px;
  color:var(--text-sub);
  margin-bottom:10px;
  position:relative;
  transition:color var(--ease),padding-left var(--ease);
}
.footer-col a:hover{color:var(--primary);padding-left:4px}
.footer-bottom{
  margin-top:40px;
  padding-top:22px;
  border-top:1px solid var(--line);
  display:flex;
  align-items:center;
  justify-content:space-between;
  gap:16px;
  flex-wrap:wrap;
  font-size:13px;
  color:var(--text-weak);
}
.footer-bottom a{font-size:13px}

/* ============ MOBILE TABBAR ============ */
.mobile-tabbar{
  display:none;
  position:fixed;
  left:0;right:0;bottom:0;
  z-index:1040;
  height:calc(60px + env(safe-area-inset-bottom));
  padding-bottom:env(safe-area-inset-bottom);
  background:rgba(9,13,28,.9);
  backdrop-filter:blur(18px) saturate(140%);
  -webkit-backdrop-filter:blur(18px) saturate(140%);
  border-top:1px solid var(--line);
}
.tabbar-inner{
  height:60px;
  display:flex;
  align-items:center;
  justify-content:space-around;
}
.tab-item{
  position:relative;
  display:flex;
  flex-direction:column;
  align-items:center;
  gap:3px;
  font-size:10.5px;
  color:var(--text-weak);
  transition:color var(--ease);
  padding:4px 10px;
}
.tab-item svg{width:22px;height:22px;stroke:currentColor;fill:none;stroke-width:1.6}
.tab-item:hover{color:var(--text-sub)}
.tab-item.active{color:var(--primary)}
.tab-item.active::before{
  content:"";
  position:absolute;
  top:-4px;left:50%;
  transform:translateX(-50%);
  width:4px;height:4px;
  border-radius:50%;
  background:var(--primary);
  box-shadow:0 0 8px rgba(62,232,196,.9);
}

/* ============ 入场动画 ============ */
.reveal{opacity:0;transform:translateY(16px);transition:opacity .5s ease,transform .5s cubic-bezier(.22,.61,.36,1)}
.reveal.in-view{opacity:1;transform:translateY(0)}

/* ============ 响应式 ============ */
@media (max-width:1199.98px){
  .stat-grid{grid-template-columns:repeat(2,1fr)}
  .brand-sub{display:none}
}

@media (max-width:991.98px){
  :root{--header-h:62px}
  body{padding-bottom:76px}
  .nav-links{display:none}
  .btn-cta-glow{display:none}
  .nav-toggle{display:flex;margin-left:auto}
  .mobile-tabbar{display:block}
  .cat-hero{padding:48px 0 40px}
  .cat-hero h1{font-size:27px;line-height:1.35}
  .hero-badge{position:static;display:block;font-size:34px;margin-bottom:10px}
  .section{padding:56px 0}
  .section-tight{padding:48px 0}
  .sec-head{margin-bottom:26px}
  .sec-head h2{font-size:21px}
  .proof-band{grid-template-columns:1fr;padding:26px 22px}
  .scene-grid{grid-template-columns:1fr}
  .scene-card:nth-child(2){margin-top:0}
  .scene-card:nth-child(3){margin-top:0}
  .cta-band{flex-direction:column;align-items:flex-start;padding:30px 24px}
  .cta-actions{width:100%}
  .cta-actions a{flex:1 1 100%;justify-content:center}
  .footer-grid{grid-template-columns:repeat(2,1fr);gap:28px}
  .row-thumb{width:96px}
  .row-body h3{font-size:18px}
}

@media (max-width:575.98px){
  body{font-size:15px;line-height:1.8}
  .container{padding-left:16px;padding-right:16px}
  .stat-grid{grid-template-columns:1fr}
  .proof-metrics{grid-template-columns:1fr}
  .list-row{gap:14px;padding:20px 12px;align-items:flex-start}
  .row-index{width:40px;font-size:20px;padding-top:4px}
  .row-thumb{width:76px}
  .row-arrow{display:none}
  .footer-grid{grid-template-columns:1fr;gap:24px}
  .footer-bottom{flex-direction:column;align-items:flex-start}
  .hero-chips{gap:8px}
  .tag-chip{font-size:11px;padding:5px 12px}
}

@media (prefers-reduced-motion:reduce){
  *{animation:none !important;transition:none !important}
  .reveal{opacity:1;transform:none}
}