/* roulang page: index */
:root{
  --ink-900:#070C14;
  --surface-800:#0D1522;
  --surface-700:#131E2E;
  --surface-900:#0B1420;
  --line:rgba(255,255,255,.08);
  --line-strong:rgba(255,255,255,.16);
  --volt:#1FD6A6;
  --volt-hover:#17B98D;
  --volt-active:#12A07A;
  --amber:#FF8A4C;
  --text:#E8EEF6;
  --text-2:#A7B6C8;
  --text-3:#6B7C90;
  --info:#5AA9FF;
  --err:#FF5D5D;
  --radius-lg:16px;
  --radius-md:12px;
  --radius-sm:6px;
  --shadow-card:0 8px 24px rgba(0,0,0,.35);
  --shadow-lift:0 14px 36px rgba(0,0,0,.5);
  --bs-body-bg:#070C14;
  --bs-body-color:#E8EEF6;
  --bs-primary:#1FD6A6;
  --bs-border-color:rgba(255,255,255,.08);
  --bs-link-color:#1FD6A6;
  --bs-link-hover-color:#17B98D;
}
*,*::before,*::after{box-sizing:border-box;}
html{-webkit-text-size-adjust:100%;}
body{
  margin:0;
  background:var(--ink-900);
  color:var(--text);
  font-family:"PingFang SC","HarmonyOS Sans","Microsoft YaHei","Helvetica Neue",Arial,sans-serif;
  font-size:16px;
  line-height:1.75;
  -webkit-font-smoothing:antialiased;
  overflow-x:hidden;
}
h1,h2,h3,h4,h5,p,ul,ol,figure{margin:0;padding:0;}
ul,ol{list-style:none;}
a{color:inherit;text-decoration:none;transition:color .2s ease;}
img{max-width:100%;display:block;}
button{font-family:inherit;}
:focus-visible{outline:2px solid var(--volt);outline-offset:2px;}
.wrap{max-width:1240px;margin:0 auto;padding:0 24px;}
.num{font-variant-numeric:tabular-nums;}
.section{padding:76px 0;}
.section-sm{padding:56px 0;}

/* ---------- 导航 ---------- */
.site-header{
  position:fixed;top:0;left:0;right:0;z-index:120;
  transition:background .28s ease,border-color .28s ease,box-shadow .28s ease;
  border-bottom:1px solid transparent;
}
.site-header.scrolled{
  background:rgba(7,12,20,.92);
  backdrop-filter:blur(14px);
  -webkit-backdrop-filter:blur(14px);
  border-bottom:1px solid var(--line);
  box-shadow:0 10px 30px rgba(0,0,0,.35);
}
.nav-inner{height:72px;display:flex;align-items:center;gap:26px;transition:height .28s ease;}
.site-header.scrolled .nav-inner{height:60px;}
.brand{display:flex;align-items:center;gap:9px;font-size:20px;font-weight:800;letter-spacing:-.3px;color:var(--text);}
.brand:hover{color:var(--text);}
.brand-dot{width:8px;height:8px;border-radius:50%;background:var(--volt);display:inline-block;box-shadow:0 0 10px rgba(31,214,166,.7);}
.nav-menu{display:flex;align-items:center;gap:6px;margin-left:8px;}
.nav-menu a{
  position:relative;display:inline-flex;align-items:center;
  min-height:44px;padding:0 12px;font-size:15px;font-weight:500;color:var(--text-2);
  transition:color .2s ease;
}
.nav-menu a::after{
  content:"";position:absolute;left:12px;bottom:6px;width:0;height:2px;border-radius:2px;
  background:var(--volt);transition:width .24s ease;
}
.nav-menu a:hover,.nav-menu a:focus-visible{color:var(--text);}
.nav-menu a:hover::after,.nav-menu a:focus-visible::after{width:calc(60% - 4px);}
.nav-menu a.active{color:var(--text);}
.nav-menu a.active::after{width:calc(60% - 4px);}
.nav-actions{display:flex;align-items:center;gap:12px;margin-left:auto;}
.btn{
  display:inline-flex;align-items:center;justify-content:center;gap:8px;
  min-height:44px;padding:0 20px;border-radius:999px;border:1px solid transparent;
  font-size:15px;font-weight:600;line-height:1;cursor:pointer;
  transition:transform .18s ease,background .2s ease,color .2s ease,border-color .2s ease,box-shadow .24s ease;
  white-space:nowrap;
}
.btn i{font-size:13px;transition:transform .22s ease;}
.btn-primary-volt{background:var(--volt);color:#04140F;}
.btn-primary-volt:hover{background:var(--volt-hover);color:#04140F;transform:translateY(-1px);box-shadow:0 0 0 1px rgba(31,214,166,.35),0 8px 28px rgba(31,214,166,.28);}
.btn-primary-volt:active{background:var(--volt-active);transform:translateY(1px);box-shadow:none;}
.btn-ghost{background:transparent;border-color:var(--line-strong);color:var(--text-2);}
.btn-ghost:hover{border-color:var(--volt);color:var(--volt);transform:translateY(-1px);}
.btn-ghost:active{transform:translateY(1px);}
.btn-text{display:inline-flex;align-items:center;gap:6px;color:var(--volt);font-weight:600;font-size:15px;min-height:44px;}
.btn-text:hover{color:var(--volt-hover);}
.btn-text:hover i{transform:translateX(4px);}
.btn-sm{min-height:38px;padding:0 16px;font-size:14px;}
.nav-toggle{
  display:none;align-items:center;justify-content:center;
  width:44px;height:44px;border-radius:var(--radius-md);
  background:transparent;border:1px solid var(--line-strong);color:var(--text);
  font-size:17px;cursor:pointer;
}
.mobile-drawer{
  position:fixed;inset:0;z-index:200;background:rgba(7,12,20,.985);
  padding:20px 20px 40px;display:flex;flex-direction:column;gap:8px;
  transform:translateY(-101%);transition:transform .34s cubic-bezier(.4,0,.2,1);
  overflow-y:auto;
}
.mobile-drawer.open{transform:translateY(0);}
.drawer-top{display:flex;align-items:center;justify-content:space-between;padding-bottom:14px;border-bottom:1px solid var(--line);}
.drawer-close{width:44px;height:44px;border-radius:var(--radius-md);border:1px solid var(--line-strong);background:transparent;color:var(--text);font-size:18px;cursor:pointer;}
.drawer-links{display:flex;flex-direction:column;margin-top:10px;}
.drawer-links a{
  display:flex;align-items:center;justify-content:space-between;
  min-height:56px;font-size:18px;font-weight:600;color:var(--text);
  border-bottom:1px solid var(--line);
}
.drawer-links a i{color:var(--text-3);font-size:14px;}
.drawer-links a.active{color:var(--volt);}
.drawer-cta{margin-top:22px;display:flex;flex-direction:column;gap:12px;}
.drawer-cta .btn{width:100%;min-height:48px;}

/* ---------- Hero ---------- */
.hero{
  position:relative;padding:132px 0 64px;overflow:hidden;
  background:
    radial-gradient(680px 420px at 82% 4%,rgba(31,214,166,.12),transparent 70%),
    radial-gradient(520px 380px at 8% 88%,rgba(255,138,76,.06),transparent 72%),
    var(--ink-900);
}
.hero::before{
  content:"";position:absolute;inset:0;pointer-events:none;
  background-image:linear-gradient(rgba(255,255,255,.028) 1px,transparent 1px),linear-gradient(90deg,rgba(255,255,255,.028) 1px,transparent 1px);
  background-size:64px 64px;
  mask-image:radial-gradient(circle at 55% 30%,#000 45%,transparent 82%);
  -webkit-mask-image:radial-gradient(circle at 55% 30%,#000 45%,transparent 82%);
}
.hero-grid{position:relative;display:grid;grid-template-columns:1.12fr .88fr;gap:52px;align-items:center;}
.eyebrow{
  display:inline-flex;align-items:center;gap:8px;
  padding:6px 12px;border-radius:var(--radius-sm);
  background:rgba(31,214,166,.12);color:var(--volt);
  font-size:13px;font-weight:600;letter-spacing:.04em;margin-bottom:20px;
}
.eyebrow .pulse{width:6px;height:6px;border-radius:50%;background:var(--volt);box-shadow:0 0 0 4px rgba(31,214,166,.18);}
.hero h1{font-size:46px;line-height:1.15;font-weight:800;letter-spacing:-.5px;color:var(--text);}
.hero h1 span{color:var(--volt);}
.hero-sub{margin-top:18px;font-size:17px;color:var(--text-2);max-width:520px;}
.hero-btns{display:flex;flex-wrap:wrap;gap:14px;margin-top:30px;}
.hero-btns .btn{min-height:48px;padding:0 24px;}
.hero-metrics{display:flex;flex-wrap:wrap;gap:34px;margin-top:38px;padding-top:26px;border-top:1px solid var(--line);}
.metric-num{font-size:26px;font-weight:800;color:var(--text);font-variant-numeric:tabular-nums;letter-spacing:-.5px;}
.metric-num em{font-style:normal;font-size:14px;font-weight:600;color:var(--volt);margin-left:4px;}
.metric-label{font-size:13px;color:var(--text-3);margin-top:2px;}
.hero-media{
  position:relative;height:520px;border-radius:var(--radius-lg);overflow:hidden;
  box-shadow:var(--shadow-lift);border:1px solid var(--line);
}
.hero-media img{width:100%;height:100%;object-fit:cover;}
.hero-media::after{
  content:"";position:absolute;inset:0;
  background:linear-gradient(180deg,rgba(7,12,20,.05) 30%,rgba(7,12,20,.85) 100%);
}
.media-tag{
  position:absolute;top:18px;left:18px;z-index:2;
  display:inline-flex;align-items:center;gap:7px;
  padding:7px 13px;border-radius:var(--radius-sm);
  background:rgba(13,21,34,.55);backdrop-filter:blur(14px);-webkit-backdrop-filter:blur(14px);
  border:1px solid rgba(255,255,255,.10);
  font-size:13px;font-weight:600;color:var(--text);
}
.media-tag .live{width:7px;height:7px;border-radius:50%;background:var(--amber);box-shadow:0 0 8px rgba(255,138,76,.8);}
.media-bar{
  position:absolute;left:16px;right:16px;bottom:16px;z-index:2;
  padding:16px 18px;border-radius:var(--radius-md);
  background:rgba(13,21,34,.55);backdrop-filter:blur(14px);-webkit-backdrop-filter:blur(14px);
  border:1px solid rgba(255,255,255,.10);
}
.media-bar h3{font-size:16px;font-weight:600;color:var(--text);}
.media-bar p{font-size:13px;color:var(--text-2);margin-top:4px;}
.media-progress{height:3px;border-radius:3px;background:rgba(255,255,255,.14);margin-top:14px;overflow:hidden;}
.media-progress span{display:block;height:100%;width:64%;border-radius:3px;background:var(--volt);}

/* ---------- 通用区块头 ---------- */
.sec-head{display:flex;align-items:flex-end;justify-content:space-between;gap:24px;margin-bottom:34px;flex-wrap:wrap;}
.sec-title{font-size:28px;font-weight:700;letter-spacing:-.4px;color:var(--text);}
.sec-desc{margin-top:10px;font-size:15px;color:var(--text-2);max-width:620px;}
.sec-tools{display:flex;align-items:center;gap:10px;}
.round-btn{
  width:38px;height:38px;border-radius:50%;display:inline-flex;align-items:center;justify-content:center;
  background:transparent;border:1px solid var(--line-strong);color:var(--text-2);
  cursor:pointer;transition:all .2s ease;
}
.round-btn:hover{border-color:var(--volt);color:var(--volt);}

/* ---------- 横滑竖屏卡 ---------- */
.rail{
  display:grid;grid-auto-flow:column;grid-auto-columns:minmax(232px,1fr);
  gap:20px;overflow-x:auto;scroll-snap-type:x mandatory;
  padding-bottom:12px;scrollbar-width:thin;
}
.rail::-webkit-scrollbar{height:6px;}
.rail::-webkit-scrollbar-thumb{background:rgba(255,255,255,.14);border-radius:6px;}
.rail::-webkit-scrollbar-track{background:transparent;}
.v-card{
  scroll-snap-align:start;background:var(--surface-800);border:1px solid var(--line);
  border-radius:var(--radius-lg);overflow:hidden;box-shadow:var(--shadow-card);
  transition:transform .2s ease,border-color .2s ease,box-shadow .2s ease;
}
.v-card:hover{transform:translateY(-2px);border-color:rgba(31,214,166,.3);box-shadow:var(--shadow-lift);}
.v-thumb{position:relative;aspect-ratio:3/4;overflow:hidden;background:var(--surface-700);}
.v-thumb img{width:100%;height:100%;object-fit:cover;transition:transform .32s ease;}
.v-card:hover .v-thumb img{transform:scale(1.03);}
.v-thumb::after{content:"";position:absolute;inset:0;background:linear-gradient(180deg,rgba(7,12,20,0) 40%,rgba(7,12,20,.78) 100%);}
.v-idx{
  position:absolute;top:12px;right:12px;z-index:2;
  padding:4px 9px;border-radius:var(--radius-sm);
  background:var(--amber);color:#20120A;font-size:13px;font-weight:700;
  font-variant-numeric:tabular-nums;
}
.v-body{padding:16px 16px 18px;}
.v-cat{
  display:inline-block;padding:3px 9px;border-radius:var(--radius-sm);
  background:rgba(31,214,166,.12);color:var(--volt);font-size:13px;font-weight:600;margin-bottom:10px;
}
.v-title{
  font-size:17px;font-weight:600;color:var(--text);line-height:1.5;
  display:-webkit-box;-webkit-line-clamp:2;-webkit-box-orient:vertical;overflow:hidden;min-height:51px;
}
.v-more{margin-top:12px;display:inline-flex;align-items:center;gap:6px;font-size:14px;font-weight:600;color:var(--volt);min-height:44px;}
.v-more i{font-size:12px;transition:transform .2s ease;}
.v-card:hover .v-more i{transform:translateX(4px);}

/* ---------- 编号榜单 ---------- */
.list-zone{display:grid;grid-template-columns:4fr 8fr;gap:48px;align-items:start;}
.rank-list{border-top:1px solid var(--line);}
.rank-item{
  display:grid;grid-template-columns:52px 68px 1fr 24px;gap:16px;align-items:center;
  padding:16px 12px;border-bottom:1px solid var(--line);
  transition:background .2s ease;border-radius:8px;
}
.rank-item:hover{background:var(--surface-700);}
.rank-num{font-size:24px;font-weight:800;color:var(--amber);opacity:.9;font-variant-numeric:tabular-nums;letter-spacing:-.5px;}
.rank-thumb{width:68px;height:68px;border-radius:var(--radius-md);overflow:hidden;background:var(--surface-700);}
.rank-thumb img{width:100%;height:100%;object-fit:cover;}
.rank-title{font-size:17px;font-weight:600;color:var(--text);}
.rank-desc{font-size:13.5px;color:var(--text-3);margin-top:4px;display:-webkit-box;-webkit-line-clamp:1;-webkit-box-orient:vertical;overflow:hidden;}
.rank-tag{
  display:inline-block;margin-top:8px;padding:2px 8px;border-radius:var(--radius-sm);
  border:1px solid rgba(31,214,166,.28);color:var(--volt);font-size:12.5px;font-weight:600;
}
.rank-arrow{width:34px;height:34px;border-radius:50%;border:1px solid var(--line-strong);display:flex;align-items:center;justify-content:center;color:var(--text-3);transition:all .2s ease;}
.rank-item:hover .rank-arrow{border-color:var(--volt);color:var(--volt);}

/* ---------- 资讯列表（CMS） ---------- */
.news-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:22px;}
.news-card{
  position:relative;background:var(--surface-800);border:1px solid var(--line);
  border-radius:var(--radius-lg);padding:24px 22px 22px;box-shadow:var(--shadow-card);
  transition:transform .2s ease,border-color .2s ease,box-shadow .2s ease;
  display:flex;flex-direction:column;
}
.news-card::before{
  content:"";position:absolute;left:0;top:22px;bottom:22px;width:3px;border-radius:3px;background:var(--volt);
}
.news-card:hover{transform:translateY(-2px);border-color:rgba(31,214,166,.32);box-shadow:var(--shadow-lift);}
.news-title{font-size:17px;font-weight:600;color:var(--text);line-height:1.55;display:-webkit-box;-webkit-line-clamp:2;-webkit-box-orient:vertical;overflow:hidden;}
.news-card:hover .news-title{color:var(--volt);}
.news-summary{
  margin-top:10px;font-size:14px;color:var(--text-2);line-height:1.7;
  display:-webkit-box;-webkit-line-clamp:2;-webkit-box-orient:vertical;overflow:hidden;
}
.news-meta{margin-top:auto;padding-top:16px;display:flex;flex-wrap:wrap;align-items:center;gap:8px;font-size:13px;color:var(--text-3);font-variant-numeric:tabular-nums;}
.news-meta .cat{display:inline-block;padding:2px 8px;border-radius:var(--radius-sm);background:rgba(31,214,166,.12);color:var(--volt);font-weight:600;}
.empty-tip{
  grid-column:1/-1;padding:52px 24px;text-align:center;
  border:1px dashed var(--line-strong);border-radius:var(--radius-lg);
  color:var(--text-3);font-size:15px;background:var(--surface-800);
}
.empty-tip i{display:block;font-size:26px;color:var(--text-3);margin-bottom:12px;}

/* ---------- 口碑条 ---------- */
.rail-quote{grid-auto-columns:minmax(300px,1fr);}
.quote-card{
  scroll-snap-align:start;padding:20px;border-radius:var(--radius-lg);
  background:var(--surface-800);border:1px solid var(--line);
  box-shadow:var(--shadow-card);transition:transform .2s ease,border-color .2s ease;
}
.quote-card:hover{transform:translateY(-2px);border-color:rgba(31,214,166,.28);}
.quote-top{display:flex;align-items:center;gap:12px;}
.quote-avatar{
  width:40px;height:40px;border-radius:50%;display:flex;align-items:center;justify-content:center;
  background:rgba(31,214,166,.14);color:var(--volt);font-weight:700;font-size:15px;
}
.quote-name{font-size:15px;font-weight:600;color:var(--text);}
.quote-role{font-size:12.5px;color:var(--text-3);}
.quote-verified{
  margin-left:auto;padding:3px 8px;border-radius:var(--radius-sm);
  background:rgba(31,214,166,.12);color:var(--volt);font-size:12px;font-weight:600;
}
.quote-text{
  margin-top:14px;font-size:14.5px;color:var(--text-2);line-height:1.75;
  display:-webkit-box;-webkit-line-clamp:2;-webkit-box-orient:vertical;overflow:hidden;
}
.quote-note{margin-top:18px;font-size:13px;color:var(--text-3);}

/* ---------- FAQ ---------- */
.faq-wrap{max-width:840px;margin:0 auto;border-top:1px solid var(--line);}
.faq-item{border-bottom:1px solid var(--line);}
.faq-q{
  width:100%;display:flex;align-items:center;justify-content:space-between;gap:20px;
  padding:20px 4px;background:transparent;border:0;color:var(--text);
  font-size:16px;font-weight:600;text-align:left;cursor:pointer;line-height:1.6;
}
.faq-q:hover{color:var(--volt);}
.faq-icon{
  flex:none;width:28px;height:28px;border-radius:50%;border:1px solid var(--line-strong);
  display:flex;align-items:center;justify-content:center;font-size:13px;color:var(--text-2);
  transition:transform .25s ease,color .2s ease,border-color .2s ease;
}
.faq-item.open .faq-icon{transform:rotate(45deg);color:var(--volt);border-color:rgba(31,214,166,.4);}
.faq-a{max-height:0;overflow:hidden;transition:max-height .3s ease;}
.faq-a p{padding:0 4px 22px;font-size:15px;color:var(--text-2);line-height:1.8;}

/* ---------- CTA ---------- */
.cta-band{
  position:relative;border-radius:var(--radius-lg);overflow:hidden;
  background:linear-gradient(120deg,rgba(31,214,166,.10),rgba(13,21,34,.9) 46%),var(--surface-800);
  border:1px solid rgba(31,214,166,.22);box-shadow:var(--shadow-lift);
  padding:44px 42px;
}
.cta-grid{display:grid;grid-template-columns:8fr 4fr;gap:34px;align-items:center;}
.cta-band h2{font-size:27px;font-weight:700;letter-spacing:-.4px;color:var(--text);}
.cta-band p{margin-top:12px;font-size:15px;color:var(--text-2);max-width:560px;}
.cta-right{display:flex;flex-direction:column;align-items:flex-start;gap:12px;}
.cta-right .btn{min-height:50px;padding:0 28px;font-size:16px;width:100%;}
.cta-hint{font-size:12.5px;color:var(--text-3);line-height:1.7;}

/* ---------- 页脚 ---------- */
.site-footer{background:var(--surface-900);border-top:1px solid var(--line);padding:58px 0 0;margin-top:20px;}
.footer-grid{display:grid;grid-template-columns:1.5fr 1fr 1fr 1.2fr;gap:38px;padding-bottom:44px;}
.footer-brand{display:flex;align-items:center;gap:9px;font-size:19px;font-weight:800;color:var(--text);}
.footer-about{margin-top:14px;font-size:14px;color:var(--text-3);line-height:1.8;max-width:300px;}
.footer-col h3{font-size:14px;font-weight:700;color:var(--text);letter-spacing:.06em;margin-bottom:16px;}
.footer-col ul{display:flex;flex-direction:column;gap:4px;}
.footer-col a,.footer-col li{display:inline-block;font-size:14px;color:var(--text-3);min-height:32px;line-height:32px;transition:color .2s ease,transform .2s ease;}
.footer-col a:hover{color:var(--volt);transform:translateX(2px);}
.footer-bottom{
  border-top:1px solid var(--line);padding:20px 0 28px;
  display:flex;flex-wrap:wrap;gap:12px;align-items:center;justify-content:space-between;
  font-size:13px;color:var(--text-3);
}
.footer-bottom .links{display:flex;gap:18px;flex-wrap:wrap;}
.footer-bottom a:hover{color:var(--volt);}

/* ---------- 吸底 CTA ---------- */
.sticky-cta{
  display:none;position:fixed;left:0;right:0;bottom:0;z-index:110;
  padding:10px 16px calc(10px + env(safe-area-inset-bottom));
  background:rgba(13,21,34,.72);
  backdrop-filter:blur(14px);-webkit-backdrop-filter:blur(14px);
  border-top:1px solid rgba(255,255,255,.10);
  align-items:center;gap:12px;
}
.sticky-cta p{font-size:13px;color:var(--text-2);line-height:1.4;flex:1;}
.sticky-cta .btn{flex:none;min-height:44px;padding:0 18px;font-size:14px;}

/* ---------- 动效 ---------- */
.reveal{opacity:0;transform:translateY(12px);transition:opacity .42s ease-out,transform .42s ease-out;}
.reveal.in{opacity:1;transform:translateY(0);}
@media (prefers-reduced-motion:reduce){
  *{animation:none!important;transition:none!important;}
  .reveal{opacity:1;transform:none;}
}

/* ---------- 响应式 ---------- */
@media (max-width:1199px){
  .hero h1{font-size:40px;}
  .hero-media{height:480px;}
  .rail{grid-auto-columns:minmax(220px,1fr);}
}
@media (max-width:991px){
  .nav-menu,.nav-actions{display:none;}
  .nav-toggle{display:inline-flex;}
  .hero{padding:112px 0 48px;}
  .hero-grid{grid-template-columns:1fr;gap:34px;}
  .hero-media{height:min(60vh,420px);order:-1;}
  .hero h1{font-size:34px;}
  .hero-sub{max-width:none;}
  .list-zone{grid-template-columns:1fr;gap:30px;}
  .news-grid{grid-template-columns:repeat(2,1fr);}
  .cta-grid{grid-template-columns:1fr;gap:24px;}
  .footer-grid{grid-template-columns:1fr 1fr;gap:30px;}
  .sticky-cta{display:flex;}
  .site-footer{padding-bottom:76px;}
  .section{padding:56px 0;}
}
@media (max-width:767px){
  .wrap{padding:0 16px;}
  .hero h1{font-size:30px;line-height:1.22;}
  .hero-btns .btn{flex:1 1 auto;}
  .hero-metrics{gap:24px;}
  .sec-title{font-size:23px;}
  .rail{grid-auto-columns:minmax(78%,1fr);}
  .rail-quote{grid-auto-columns:minmax(84%,1fr);}
  .rank-item{grid-template-columns:40px 60px 1fr;gap:12px;}
  .rank-arrow{display:none;}
  .rank-thumb{width:60px;height:60px;}
  .rank-num{font-size:20px;}
  .news-grid{grid-template-columns:1fr;}
  .cta-band{padding:30px 22px;}
  .footer-grid{grid-template-columns:1fr;gap:26px;}
  .footer-bottom{flex-direction:column;align-items:flex-start;}
}
@media (max-width:575px){
  .hero{padding-top:100px;}
  .hero h1{font-size:27px;}
  .hero-btns{flex-direction:column;}
  .hero-btns .btn{width:100%;}
  .sec-head{flex-direction:column;align-items:flex-start;gap:14px;}
  .sec-tools{display:none;}
}

/* roulang page: article */
:root{
  --ink-900:#070C14;
  --surface-800:#0D1522;
  --surface-700:#131E2E;
  --line:rgba(255,255,255,.08);
  --line-strong:rgba(255,255,255,.16);
  --volt:#1FD6A6;
  --volt-hover:#17B98D;
  --volt-active:#12A07A;
  --volt-ink:#04140F;
  --amber:#FF8A4C;
  --text:#E8EEF6;
  --text-2:#A7B6C8;
  --text-3:#6B7C90;
  --body-text:#C9D4E2;
  --r-lg:16px;
  --r-md:12px;
  --r-sm:6px;
  --shadow:0 8px 24px rgba(0,0,0,.35);
  --shadow-hover:0 14px 36px rgba(0,0,0,.5);
  --bs-body-bg:var(--ink-900);
  --bs-body-color:var(--text);
  --bs-primary:var(--volt);
  --bs-border-color:var(--line);
  --bs-link-color:var(--volt);
  --bs-link-hover-color:var(--volt-hover);
  --bs-body-font-family:"PingFang SC","HarmonyOS Sans","Microsoft YaHei",-apple-system,BlinkMacSystemFont,"Segoe UI",Roboto,"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(--ink-900);
  color:var(--text);
  font-family:var(--bs-body-font-family);
  font-size:16px;
  line-height:1.75;
  -webkit-font-smoothing:antialiased;
  overflow-x:hidden;
}
body::before{
  content:"";
  position:fixed;
  top:-200px;left:50%;
  width:900px;height:520px;
  transform:translateX(-50%);
  background:radial-gradient(circle at 50% 50%,rgba(31,214,166,.10),rgba(31,214,166,0) 70%);
  pointer-events:none;
  z-index:0;
}
img{max-width:100%;height:auto;display:block}
a{color:var(--volt);text-decoration:none;transition:color .2s ease,border-color .2s ease,transform .2s ease}
a:hover{color:var(--volt-hover)}
button{font-family:inherit}
h1,h2,h3,h4{font-weight:800;letter-spacing:-.5px;line-height:1.2;margin:0;color:var(--text)}
p{margin:0 0 18px}
ul,ol{margin:0;padding:0;list-style:none}
::selection{background:rgba(31,214,166,.28);color:#fff}
:focus-visible{outline:2px solid var(--volt);outline-offset:2px;border-radius:4px}

.wrap{width:100%;max-width:1240px;margin:0 auto;padding:0 24px;position:relative}
.num{font-variant-numeric:tabular-nums}

/* ============ 导航 ============ */
.site-header{
  position:sticky;top:0;z-index:1030;
  background:rgba(7,12,20,.62);
  backdrop-filter:blur(10px);
  -webkit-backdrop-filter:blur(10px);
  border-bottom:1px solid transparent;
  transition:background .25s ease,border-color .25s ease;
}
.site-header.is-scrolled{background:rgba(7,12,20,.94);border-bottom-color:var(--line)}
.nav-wrap{display:flex;align-items:center;gap:20px;height:72px;transition:height .25s ease}
.site-header.is-scrolled .nav-wrap{height:60px}
.brand{
  display:inline-flex;align-items:center;gap:9px;
  font-size:20px;font-weight:800;color:var(--text);
  letter-spacing:-.4px;white-space:nowrap;flex:0 0 auto;
}
.brand:hover{color:var(--text)}
.brand-dot{width:8px;height:8px;border-radius:50%;background:var(--volt);box-shadow:0 0 12px rgba(31,214,166,.85);flex:0 0 auto}
.nav-menu{display:flex;align-items:center;gap:2px;margin:0 auto}
.nav-menu a{
  position:relative;
  display:inline-flex;align-items:center;
  min-height:44px;padding:0 13px;
  font-size:15px;font-weight:500;color:var(--text-2);
  border-radius:8px;
}
.nav-menu a::after{
  content:"";position:absolute;left:13px;bottom:8px;
  height:2px;width:0;background:var(--volt);border-radius:2px;
  transition:width .25s ease;
}
.nav-menu a:hover{color:var(--text)}
.nav-menu a:hover::after{width:60%}
.nav-menu a.active{color:var(--text);font-weight:600}
.nav-menu a.active::after{width:60%}
.nav-actions{display:flex;align-items:center;gap:10px;flex:0 0 auto}

.btn{
  display:inline-flex;align-items:center;justify-content:center;gap:8px;
  height:48px;padding:0 22px;border-radius:999px;
  font-size:15px;font-weight:600;line-height:1;
  border:1px solid transparent;cursor:pointer;
  transition:background .2s ease,color .2s ease,border-color .2s ease,transform .2s ease,box-shadow .2s ease;
  white-space:nowrap;
}
.btn-volt{background:var(--volt);color:var(--volt-ink)}
.btn-volt:hover{background:var(--volt-hover);color:var(--volt-ink);transform:translateY(-1px);box-shadow:0 0 0 1px rgba(31,214,166,.35),0 8px 28px rgba(31,214,166,.28)}
.btn-volt:active{background:var(--volt-active);transform:translateY(0);box-shadow:none}
.btn-ghost{background:transparent;border-color:var(--line-strong);color:var(--text)}
.btn-ghost:hover{border-color:var(--volt);color:var(--volt);transform:translateY(-1px)}
.btn-ghost:active{transform:translateY(0)}
.btn-sm{height:40px;padding:0 18px;font-size:14px}
.btn-block{width:100%}
.btn:disabled,.btn.disabled{opacity:.4;box-shadow:none;pointer-events:none}

.nav-toggle{
  display:none;
  width:44px;height:44px;margin-left:auto;
  align-items:center;justify-content:center;
  background:transparent;border:1px solid var(--line-strong);border-radius:12px;
  color:var(--text);font-size:18px;cursor:pointer;
}
.nav-toggle:hover{border-color:var(--volt);color:var(--volt)}

.drawer{
  position:fixed;inset:0;z-index:1040;
  background:rgba(7,12,20,.98);
  padding:20px 20px 40px;
  display:none;flex-direction:column;
  overflow-y:auto;
}
.drawer.open{display:flex}
.drawer-top{display:flex;align-items:center;justify-content:space-between;gap:16px;padding-bottom:18px;border-bottom:1px solid var(--line)}
.drawer-close{
  width:44px;height:44px;border-radius:12px;border:1px solid var(--line-strong);
  background:transparent;color:var(--text);font-size:18px;cursor:pointer;
}
.drawer-close:hover{border-color:var(--volt);color:var(--volt)}
.drawer-links{display:flex;flex-direction:column;margin:8px 0 24px}
.drawer-links a{
  display:flex;align-items:center;justify-content:space-between;
  min-height:56px;font-size:18px;font-weight:600;color:var(--text-2);
  border-bottom:1px solid var(--line);
}
.drawer-links a:hover,.drawer-links a.active{color:var(--volt)}
.drawer-links a i{font-size:13px;opacity:.6}
.drawer .btn{width:100%;margin-top:8px}

/* ============ 通用区块 ============ */
.section{padding:64px 0;position:relative;z-index:1}
.section-head{display:flex;align-items:flex-end;justify-content:space-between;gap:24px;margin-bottom:32px;flex-wrap:wrap}
.section-head h2{font-size:28px;font-weight:700}
.section-head p{color:var(--text-2);font-size:15px;margin:8px 0 0;max-width:640px}
.link-arrow{display:inline-flex;align-items:center;gap:8px;font-size:15px;font-weight:600;color:var(--text-2)}
.link-arrow i{transition:transform .2s ease}
.link-arrow:hover{color:var(--volt)}
.link-arrow:hover i{transform:translateX(4px)}

.badge-cat{
  display:inline-flex;align-items:center;
  padding:4px 10px;border-radius:var(--r-sm);
  background:rgba(31,214,166,.12);color:var(--volt);
  font-size:13px;font-weight:600;line-height:1.6;
}
.badge-amber{
  display:inline-flex;align-items:center;
  padding:3px 9px;border-radius:var(--r-sm);
  background:var(--amber);color:#2A1004;
  font-size:13px;font-weight:700;font-variant-numeric:tabular-nums;
}
.tag{
  display:inline-flex;align-items:center;
  padding:6px 14px;border-radius:999px;
  border:1px solid var(--line-strong);
  color:var(--text-2);font-size:13px;
}
.tag:hover{border-color:var(--volt);color:var(--volt)}

/* ============ 文章区 ============ */
.article-hero{
  position:relative;
  padding:40px 0 8px;
  overflow:hidden;
  z-index:1;
}
.article-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:64px 64px;
  mask-image:radial-gradient(circle at 30% 20%,#000 0%,transparent 72%);
  -webkit-mask-image:radial-gradient(circle at 30% 20%,#000 0%,transparent 72%);
  pointer-events:none;
}
.crumb{position:relative;z-index:1}
.crumb ol{display:flex;flex-wrap:wrap;align-items:center;gap:8px;font-size:14px;color:var(--text-3)}
.crumb li{display:inline-flex;align-items:center;gap:8px;min-width:0}
.crumb a{color:var(--text-3)}
.crumb a:hover{color:var(--volt)}
.crumb .sep{color:var(--text-3);opacity:.7}
.crumb .current{color:var(--text-2);max-width:340px;overflow:hidden;text-overflow:ellipsis;white-space:nowrap;display:inline-block}

.article-layout{
  display:grid;
  grid-template-columns:minmax(0,1fr) 320px;
  gap:56px;
  align-items:start;
  padding:32px 0 24px;
  position:relative;
  z-index:1;
}
.article-main{min-width:0;max-width:760px}
.article-head{padding-bottom:28px;border-bottom:1px solid var(--line);margin-bottom:34px}
.article-head .badge-cat{margin-bottom:18px}
.article-head h1{
  font-size:36px;font-weight:800;line-height:1.28;letter-spacing:-.5px;
  margin-bottom:20px;word-break:break-word;
}
.meta-row{
  display:flex;flex-wrap:wrap;align-items:center;gap:10px;
  font-size:13px;font-weight:500;letter-spacing:.02em;color:var(--text-3);
}
.meta-row .dot{width:3px;height:3px;border-radius:50%;background:var(--text-3);opacity:.6}
.meta-row .num{color:var(--text-2)}

.article-content{
  font-size:17px;line-height:1.9;color:var(--body-text);
  word-break:break-word;
}
.article-content > *:first-child{margin-top:0}
.article-content p{margin:0 0 18px}
.article-content h2{
  position:relative;
  font-size:27px;font-weight:700;color:var(--text);
  margin:44px 0 18px;padding-left:16px;line-height:1.35;
}
.article-content h2::before{
  content:"";position:absolute;left:0;top:.28em;
  width:4px;height:1.05em;border-radius:2px;background:var(--volt);
}
.article-content h3{font-size:20px;font-weight:600;color:var(--text);margin:32px 0 14px}
.article-content h4{font-size:17px;font-weight:600;color:var(--text);margin:24px 0 12px}
.article-content a{color:var(--volt);text-decoration:underline;text-underline-offset:3px}
.article-content a:hover{color:var(--volt-hover)}
.article-content ul,.article-content ol{margin:0 0 20px;padding-left:0}
.article-content ul li,.article-content ol li{position:relative;padding-left:24px;margin-bottom:10px;line-height:1.9}
.article-content ul li::before{
  content:"";position:absolute;left:4px;top:.72em;
  width:7px;height:7px;border-radius:2px;background:var(--volt);opacity:.9;
}
.article-content ol{counter-reset:ac}
.article-content ol li{counter-increment:ac}
.article-content ol li::before{
  content:counter(ac) ".";
  position:absolute;left:0;top:0;
  color:var(--volt);font-weight:700;font-variant-numeric:tabular-nums;
}
.article-content blockquote{
  margin:26px 0;padding:20px 22px;
  background:var(--surface-700);
  border-left:3px solid var(--volt);
  border-radius:0 var(--r-md) var(--r-md) 0;
  color:var(--text-2);font-size:16px;line-height:1.85;
}
.article-content blockquote p:last-child{margin-bottom:0}
.article-content img{border-radius:var(--r-lg);margin:26px 0;width:100%}
.article-content figure{margin:26px 0}
.article-content figcaption{font-size:13px;color:var(--text-3);text-align:center;margin-top:10px}
.article-content hr{border:0;border-top:1px solid var(--line);margin:34px 0}
.article-content table{
  width:100%;display:block;overflow-x:auto;
  border-collapse:collapse;margin:26px 0;font-size:15px;
  border-radius:var(--r-md);
}
.article-content table th,
.article-content table td{
  padding:12px 16px;border:1px solid var(--line);text-align:left;white-space:nowrap;color:var(--body-text);
}
.article-content table th{background:var(--surface-700);color:var(--text);font-weight:600}
.article-content table tbody tr:nth-child(even){background:rgba(255,255,255,.025)}
.article-content strong{color:var(--text);font-weight:600}
.article-content code{
  background:var(--surface-700);color:var(--volt);
  padding:2px 6px;border-radius:6px;font-size:15px;
}

.article-foot{
  margin-top:44px;padding-top:28px;border-top:1px solid var(--line);
}
.tag-list{display:flex;flex-wrap:wrap;gap:10px;margin-bottom:22px}
.foot-note{font-size:13px;color:var(--text-3);line-height:1.85;margin:0}

.empty-state{
  display:flex;flex-direction:column;align-items:center;text-align:center;
  padding:64px 24px;
  background:var(--surface-800);
  border:1px solid var(--line);
  border-radius:var(--r-lg);
  box-shadow:var(--shadow);
}
.empty-state .ico{
  width:64px;height:64px;border-radius:50%;
  display:flex;align-items:center;justify-content:center;
  background:rgba(31,214,166,.10);color:var(--volt);font-size:24px;margin-bottom:18px;
}
.empty-state h2{font-size:22px;margin-bottom:10px}
.empty-state p{color:var(--text-2);font-size:15px;margin-bottom:22px}

/* ============ 侧栏 ============ */
.article-side{position:sticky;top:96px;display:flex;flex-direction:column;gap:20px}
.side-card{
  background:var(--surface-800);
  border:1px solid var(--line);
  border-radius:var(--r-lg);
  padding:22px;
  box-shadow:var(--shadow);
}
.side-card h2,.side-card h3{
  font-size:15px;font-weight:700;letter-spacing:.02em;
  color:var(--text);margin-bottom:16px;display:flex;align-items:center;gap:9px;
}
.side-card h3::before{content:"";width:3px;height:14px;border-radius:2px;background:var(--volt)}
.side-list{display:flex;flex-direction:column;gap:2px}
.side-list li{border-bottom:1px solid var(--line)}
.side-list li:last-child{border-bottom:0}
.side-list a{
  display:flex;align-items:flex-start;gap:10px;
  padding:12px 0;font-size:14px;line-height:1.6;color:var(--text-2);
}
.side-list a:hover{color:var(--volt)}
.side-list a span.idx{
  flex:0 0 auto;font-size:13px;font-weight:700;color:var(--amber);
  opacity:.9;font-variant-numeric:tabular-nums;
}
.side-meta{display:flex;flex-direction:column;gap:12px}
.side-meta .row-item{
  display:flex;align-items:center;justify-content:space-between;gap:12px;
  font-size:14px;color:var(--text-2);
  padding-bottom:12px;border-bottom:1px dashed var(--line);
}
.side-meta .row-item:last-child{border-bottom:0;padding-bottom:0}
.side-meta .row-item b{color:var(--text);font-weight:600}
.side-card .btn{margin-top:4px}

/* ============ 相关推荐 ============ */
.rel-grid{display:grid;grid-template-columns:repeat(3,minmax(0,1fr));gap:24px}
.card-news{
  display:flex;flex-direction:column;
  background:var(--surface-800);
  border:1px solid var(--line);
  border-radius:var(--r-lg);
  overflow:hidden;
  box-shadow:var(--shadow);
  transition:transform .2s ease,border-color .2s ease,box-shadow .2s ease;
}
.card-news:hover{transform:translateY(-2px);border-color:rgba(31,214,166,.35);box-shadow:var(--shadow-hover)}
.card-news .thumb{
  position:relative;aspect-ratio:16/10;overflow:hidden;background:var(--surface-700);
}
.card-news .thumb img{width:100%;height:100%;object-fit:cover;transition:transform .3s ease}
.card-news:hover .thumb img{transform:scale(1.04)}
.card-news .body{padding:18px 20px 20px;display:flex;flex-direction:column;gap:10px;flex:1}
.card-news h3{font-size:17px;font-weight:600;line-height:1.45;color:var(--text)}
.card-news h3 a{color:inherit}
.card-news h3 a:hover{color:var(--volt)}
.card-news .desc{
  font-size:14px;line-height:1.7;color:var(--text-2);margin:0;
  display:-webkit-box;-webkit-line-clamp:2;-webkit-box-orient:vertical;overflow:hidden;
}
.card-news .meta{
  margin-top:auto;display:flex;align-items:center;gap:10px;flex-wrap:wrap;
  font-size:13px;color:var(--text-3);
}
.card-news .meta .dot{width:3px;height:3px;border-radius:50%;background:var(--text-3);opacity:.6}

/* ============ CTA 带 ============ */
.cta-band{
  position:relative;
  background:linear-gradient(135deg,rgba(31,214,166,.10),rgba(13,21,34,.9) 60%);
  border-top:1px solid var(--line);
  border-bottom:1px solid var(--line);
  padding:56px 0;
  overflow:hidden;
}
.cta-band::after{
  content:"";position:absolute;right:-120px;top:-120px;
  width:420px;height:420px;border-radius:50%;
  background:radial-gradient(circle,rgba(31,214,166,.20),transparent 66%);
  pointer-events:none;
}
.cta-inner{display:grid;grid-template-columns:1.6fr 1fr;gap:40px;align-items:center;position:relative;z-index:1}
.cta-inner h2{font-size:30px;font-weight:800;margin-bottom:12px}
.cta-inner p{color:var(--text-2);font-size:15px;margin:0;max-width:520px}
.cta-actions{display:flex;flex-direction:column;align-items:flex-start;gap:10px;justify-self:end}
.cta-actions .hint{font-size:13px;color:var(--text-3);margin:0}

/* ============ 返回条 ============ */
.back-bar{
  display:flex;flex-wrap:wrap;align-items:center;gap:14px;
  padding:36px 0 0;
}
.back-bar .spacer{flex:1}

/* ============ 页脚 ============ */
.site-footer{
  margin-top:72px;
  padding:56px 0 28px;
  background:var(--surface-800);
  border-top:1px solid var(--line);
  position:relative;z-index:1;
}
.footer-grid{display:grid;grid-template-columns:1.5fr 1fr 1fr 1.2fr;gap:40px}
.footer-brand{
  display:inline-flex;align-items:center;gap:9px;
  font-size:20px;font-weight:800;color:var(--text);margin-bottom:14px;letter-spacing:-.3px;
}
.footer-about{font-size:14px;line-height:1.8;color:var(--text-3);margin:0;max-width:300px}
.footer-col h3{
  font-size:15px;font-weight:700;color:var(--text);
  margin-bottom:16px;letter-spacing:.02em;
}
.footer-col ul{display:flex;flex-direction:column;gap:11px}
.footer-col li{font-size:14px;color:var(--text-3);line-height:1.7}
.footer-col a{color:var(--text-2);font-size:14px;display:inline-block;transition:color .2s ease,transform .2s ease}
.footer-col a:hover{color:var(--volt);transform:translateX(-2px)}
.footer-bottom{
  margin-top:36px;padding-top:20px;border-top:1px solid var(--line);
  display:flex;flex-wrap:wrap;align-items:center;justify-content:space-between;gap:14px;
  font-size:13px;color:var(--text-3);
}
.footer-bottom .links{display:flex;flex-wrap:wrap;gap:18px}
.footer-bottom a{color:var(--text-3)}
.footer-bottom a:hover{color:var(--volt)}

/* ============ 响应式 ============ */
@media (max-width:1199px){
  .article-layout{grid-template-columns:minmax(0,1fr) 290px;gap:40px}
  .rel-grid{grid-template-columns:repeat(3,minmax(0,1fr));gap:20px}
}
@media (max-width:1024px){
  .nav-menu{display:none}
  .nav-actions{display:none}
  .nav-toggle{display:inline-flex}
  .article-layout{grid-template-columns:minmax(0,1fr);gap:36px}
  .article-side{position:static;flex-direction:row;flex-wrap:wrap}
  .article-side .side-card{flex:1 1 280px}
  .article-main{max-width:none}
  .cta-inner{grid-template-columns:1fr;gap:26px}
  .cta-actions{justify-self:start;align-items:flex-start}
}
@media (max-width:991px){
  .section{padding:52px 0}
  .rel-grid{grid-template-columns:repeat(2,minmax(0,1fr))}
  .footer-grid{grid-template-columns:1fr 1fr;gap:32px}
  .article-head h1{font-size:30px}
  .article-content h2{font-size:23px}
}
@media (max-width:767px){
  .wrap{padding:0 16px}
  .section{padding:44px 0}
  .section-head h2{font-size:23px}
  .article-hero{padding:28px 0 4px}
  .article-layout{padding:24px 0 16px}
  .article-head h1{font-size:26px;line-height:1.32}
  .article-content{font-size:16px;line-height:1.85}
  .article-content h2{font-size:21px;margin:34px 0 14px}
  .article-content h3{font-size:18px}
  .article-content blockquote{padding:16px 18px;font-size:15px}
  .cta-inner h2{font-size:24px}
  .back-bar .spacer{display:none}
  .crumb .current{max-width:200px}
}
@media (max-width:575px){
  .rel-grid{grid-template-columns:1fr}
  .footer-grid{grid-template-columns:1fr;gap:28px}
  .footer-bottom{flex-direction:column;align-items:flex-start;gap:10px}
  .btn{height:46px;padding:0 18px;font-size:14px}
  .btn-sm{height:40px;font-size:13px}
  .article-side{flex-direction:column}
  .article-side .side-card{width:100%}
  .article-head h1{font-size:23px}
  .empty-state{padding:48px 18px}
}
@media (prefers-reduced-motion:reduce){
  html{scroll-behavior:auto}
  *,*::before,*::after{
    animation-duration:.001ms !important;
    animation-iteration-count:1 !important;
    transition-duration:.001ms !important;
  }
}

/* roulang page: category1 */
:root{
  --ink-900:#070C14;
  --surface-800:#0D1522;
  --surface-700:#131E2E;
  --input-bg:#0B1420;
  --line:rgba(255,255,255,.08);
  --line-strong:rgba(255,255,255,.18);
  --volt:#1FD6A6;
  --volt-hover:#17B98D;
  --volt-active:#12A07A;
  --volt-ink:#04140F;
  --amber:#FF8A4C;
  --text:#E8EEF6;
  --text-2:#A7B6C8;
  --text-3:#6B7C90;
  --info:#5AA9FF;
  --danger:#FF5D5D;
  --r-card:16px;
  --r-sm:12px;
  --shadow-card:0 8px 24px rgba(0,0,0,.35);
  --shadow-hover:0 14px 36px rgba(0,0,0,.5);
  --wrap:1240px;

  --bs-body-bg:#070C14;
  --bs-body-color:#E8EEF6;
  --bs-primary:#1FD6A6;
  --bs-border-color:rgba(255,255,255,.08);
  --bs-link-color:#E8EEF6;
  --bs-link-hover-color:#1FD6A6;
  --bs-font-sans-serif:"PingFang SC","HarmonyOS Sans","Microsoft YaHei",system-ui,-apple-system,"Segoe UI",Roboto,sans-serif;
}
*,*::before,*::after{box-sizing:border-box}
html{scroll-behavior:smooth;-webkit-text-size-adjust:100%}
body{
  margin:0;
  background:var(--ink-900);
  color:var(--text);
  font-family:"PingFang SC","HarmonyOS Sans","Microsoft YaHei",system-ui,-apple-system,"Segoe UI",Roboto,sans-serif;
  font-size:16px;
  line-height:1.75;
  -webkit-font-smoothing:antialiased;
  overflow-x:hidden;
}
body.no-scroll{overflow:hidden}
img{display:block;max-width:100%;height:auto}
a{color:inherit;text-decoration:none;transition:color .2s ease}
a:hover{color:var(--volt)}
h1,h2,h3,h4,p,figure{margin:0}
ul,ol{list-style:none;margin:0;padding:0}
button{font:inherit}
:focus-visible{outline:2px solid var(--volt);outline-offset:2px;border-radius:4px}
.wrap{max-width:var(--wrap);margin:0 auto;padding:0 24px;width:100%}
.num{font-variant-numeric:tabular-nums;font-feature-settings:"tnum" 1}

/* ---------- 按钮 ---------- */
.btn{display:inline-flex;align-items:center;justify-content:center;gap:8px;height:46px;padding:0 22px;border-radius:999px;font-size:15px;font-weight:600;border:1px solid transparent;cursor:pointer;white-space:nowrap;transition:transform .2s ease,background .2s ease,box-shadow .2s ease,border-color .2s ease,color .2s ease}
.btn-volt{background:var(--volt);color:var(--volt-ink);box-shadow:0 0 0 1px rgba(31,214,166,.35),0 8px 28px rgba(31,214,166,.28)}
.btn-volt:hover{background:var(--volt-hover);color:var(--volt-ink);transform:translateY(-1px);box-shadow:0 0 0 1px rgba(31,214,166,.5),0 10px 32px rgba(31,214,166,.34)}
.btn-volt:active{background:var(--volt-active);transform:translateY(0)}
.btn-ghost{background:transparent;border-color:var(--line-strong);color:var(--text)}
.btn-ghost:hover{border-color:var(--volt);color:var(--volt);transform:translateY(-1px)}
.btn-ghost:active{transform:translateY(0)}
.btn-sm{height:38px;padding:0 16px;font-size:14px}
.btn[disabled]{opacity:.4;box-shadow:none;cursor:not-allowed}

/* ---------- 头部导航 ---------- */
.site-header{position:fixed;top:0;left:0;right:0;z-index:1000;height:72px;background:transparent;border-bottom:1px solid transparent;transition:height .25s ease,background .25s ease,border-color .25s ease,backdrop-filter .25s ease}
.site-header.is-scrolled{height:60px;background:rgba(7,12,20,.92);border-bottom-color:var(--line);backdrop-filter:blur(14px)}
.header-inner{max-width:var(--wrap);margin:0 auto;padding:0 24px;height:100%;display:flex;align-items:center;justify-content:space-between;gap:24px}
.brand{display:inline-flex;align-items:center;gap:8px;font-size:20px;font-weight:800;letter-spacing:-.3px;color:var(--text)}
.brand:hover{color:var(--text)}
.brand-dot{width:8px;height:8px;border-radius:50%;background:var(--volt);box-shadow:0 0 10px rgba(31,214,166,.85);flex:none}
.nav-menu{display:flex;align-items:center;gap:26px}
.nav-menu a{position:relative;font-size:15px;font-weight:500;color:var(--text-2);padding:8px 0;display:inline-block}
.nav-menu a::after{content:"";position:absolute;left:0;bottom:0;height:2px;width:0;background:var(--volt);transition:width .22s ease}
.nav-menu a:hover{color:var(--text)}
.nav-menu a:hover::after{width:60%}
.nav-menu a.active{color:var(--text);font-weight:600}
.nav-menu a.active::after{width:60%}
.header-actions{display:flex;align-items:center;gap:12px}
.nav-drawer-cta{display:none}
.nav-toggle{display:none;width:44px;height:44px;border-radius:12px;border:1px solid var(--line-strong);background:transparent;color:var(--text);cursor:pointer;align-items:center;justify-content:center;padding:0}
.nav-toggle:hover{border-color:var(--volt);color:var(--volt)}
.nav-toggle span{display:block;width:18px;height:2px;background:currentColor;position:relative;border-radius:2px}
.nav-toggle span::before,.nav-toggle span::after{content:"";position:absolute;left:0;width:18px;height:2px;background:currentColor;border-radius:2px;transition:transform .2s ease}
.nav-toggle span::before{top:-6px}
.nav-toggle span::after{top:6px}

/* ---------- 页头 ---------- */
.page-hero{position:relative;padding:136px 0 56px;overflow:hidden;border-bottom:1px solid var(--line);
  background:linear-gradient(180deg,rgba(7,12,20,.55) 0%,rgba(7,12,20,.93) 78%,var(--ink-900) 100%),
             url('/assets/images/backpic/back-1.png') center/cover no-repeat;}
.page-hero::before{content:"";position:absolute;inset:0;pointer-events:none;
  background:radial-gradient(520px 300px at 16% 12%,rgba(31,214,166,.12),transparent 70%);}
.page-hero::after{content:"";position:absolute;right:-6%;top:26%;width:460px;height:1px;transform:rotate(-24deg);
  background:linear-gradient(90deg,transparent,rgba(31,214,166,.75));pointer-events:none}
.hero-inner{position:relative;z-index:2}
.crumbs{display:flex;flex-wrap:wrap;align-items:center;gap:8px;font-size:14px;color:var(--text-3);margin-bottom:20px}
.crumbs a{color:var(--text-3)}
.crumbs a:hover{color:var(--volt)}
.crumbs .sep{color:var(--text-3);opacity:.7}
.crumbs .current{color:var(--text-2)}
.page-hero h1{font-size:clamp(28px,4vw,46px);font-weight:800;line-height:1.15;letter-spacing:-.5px;margin:0 0 16px;max-width:820px}
.hero-lead{font-size:16px;color:var(--text-2);max-width:600px;line-height:1.8}
.hero-bottom{display:flex;flex-wrap:wrap;align-items:flex-end;justify-content:space-between;gap:24px;margin-top:32px}
.hero-stats{display:flex;flex-wrap:wrap;gap:36px}
.stat b{display:block;font-size:26px;font-weight:800;color:var(--volt);line-height:1.1;font-variant-numeric:tabular-nums}
.stat span{display:block;font-size:13px;color:var(--text-3);margin-top:6px}

/* ---------- 主体布局 ---------- */
.notice-section{padding:56px 0 0}
.section-head{display:flex;flex-wrap:wrap;align-items:center;justify-content:space-between;gap:12px;margin-bottom:22px}
.section-head h2{font-size:26px;font-weight:700;letter-spacing:-.3px}
.section-head .hint{font-size:14px;color:var(--text-3)}
.section-head .hint a{color:var(--volt);display:inline-flex;align-items:center;gap:6px}
.section-head .hint a:hover{color:var(--volt-hover)}

.notice-layout{display:grid;grid-template-columns:minmax(0,8fr) minmax(0,4fr);gap:28px;align-items:start}
.notice-list{display:flex;flex-direction:column;gap:14px}
.notice-item{display:grid;grid-template-columns:76px minmax(0,1fr) 42px;gap:20px;align-items:center;padding:20px;background:var(--surface-800);border:1px solid var(--line);border-radius:var(--r-card);box-shadow:var(--shadow-card);transition:transform .2s ease,background .2s ease,border-color .2s ease,box-shadow .2s ease}
.notice-item:hover{background:var(--surface-700);border-color:rgba(31,214,166,.35);transform:translateY(-2px);box-shadow:var(--shadow-hover);color:inherit}
.date-block{display:flex;flex-direction:column;align-items:center;justify-content:center;width:76px;height:76px;border-radius:var(--r-sm);background:rgba(31,214,166,.08);border:1px solid rgba(31,214,166,.18);flex:none}
.date-block b{font-size:26px;font-weight:800;color:var(--volt);line-height:1;font-variant-numeric:tabular-nums}
.date-block em{font-style:normal;font-size:13px;color:var(--text-3);margin-top:6px;letter-spacing:.04em}
.notice-body{min-width:0}
.tag{display:inline-block;font-size:13px;line-height:1;padding:6px 10px;border-radius:6px;background:rgba(31,214,166,.12);color:var(--volt);font-weight:500;margin-bottom:10px}
.notice-body h3{font-size:18px;font-weight:600;line-height:1.45;color:var(--text);margin-bottom:8px}
.notice-item:hover .notice-body h3{color:var(--volt)}
.notice-body p{font-size:15px;color:var(--text-2);line-height:1.7;display:-webkit-box;-webkit-line-clamp:2;-webkit-box-orient:vertical;overflow:hidden}
.notice-arrow{width:42px;height:42px;border-radius:50%;border:1px solid var(--line-strong);display:grid;place-items:center;color:var(--text-2);font-size:16px;flex:none;transition:background .2s ease,color .2s ease,border-color .2s ease,transform .2s ease}
.notice-item:hover .notice-arrow{background:var(--volt);border-color:var(--volt);color:var(--volt-ink);transform:translateX(2px)}

/* ---------- 侧栏 ---------- */
.side-col{display:flex;flex-direction:column;gap:20px;position:sticky;top:84px}
.side-card{background:var(--surface-800);border:1px solid var(--line);border-radius:var(--r-card);padding:22px;box-shadow:var(--shadow-card)}
.side-card h2{font-size:16px;font-weight:700;color:var(--text);margin-bottom:16px;display:flex;align-items:center;gap:10px}
.side-card h2::before{content:"";width:3px;height:14px;border-radius:2px;background:var(--volt);flex:none}
.side-links li{border-bottom:1px solid var(--line)}
.side-links li:last-child{border-bottom:none}
.side-links a{display:flex;align-items:center;justify-content:space-between;gap:10px;padding:11px 0;font-size:15px;color:var(--text-2)}
.side-links a:hover{color:var(--volt)}
.side-links a span.count{font-size:13px;color:var(--text-3);font-variant-numeric:tabular-nums}
.hot-list li{display:grid;grid-template-columns:26px minmax(0,1fr);gap:10px;padding:11px 0;border-bottom:1px solid var(--line)}
.hot-list li:last-child{border-bottom:none}
.hot-num{font-size:15px;font-weight:800;color:var(--amber);opacity:.9;font-variant-numeric:tabular-nums;line-height:1.6}
.hot-list a{font-size:14px;color:var(--text-2);line-height:1.6;display:-webkit-box;-webkit-line-clamp:2;-webkit-box-orient:vertical;overflow:hidden}
.hot-list a:hover{color:var(--volt)}
.field label{display:block;font-size:13px;color:var(--text-3);margin-bottom:8px}
.field input{width:100%;height:44px;background:var(--input-bg);border:1px solid rgba(255,255,255,.12);border-radius:var(--r-sm);color:var(--text);padding:0 14px;font-size:15px;transition:border-color .2s ease,box-shadow .2s ease,background .2s ease}
.field input::placeholder{color:var(--text-3)}
.field input:focus{outline:none;border-color:var(--volt);box-shadow:0 0 0 3px rgba(31,214,166,.18)}
.subscribe-form .btn{width:100%;margin-top:14px}
.form-note{font-size:13px;color:var(--text-3);line-height:1.7;margin-top:12px}
.form-msg{display:none;font-size:13px;margin-top:10px;line-height:1.6}

/* ---------- 分页 ---------- */
.pager-wrap{display:flex;flex-wrap:wrap;align-items:center;justify-content:space-between;gap:16px;margin-top:32px;padding-top:24px;border-top:1px solid var(--line)}
.pager{display:flex;align-items:center;gap:8px}
.pager a,.pager span{min-width:36px;height:36px;border-radius:50%;display:grid;place-items:center;border:1px solid var(--line-strong);color:var(--text-2);font-size:14px;padding:0 12px;font-variant-numeric:tabular-nums;transition:border-color .2s ease,color .2s ease,background .2s ease}
.pager a:hover{border-color:var(--volt);color:var(--volt)}
.pager .current{background:var(--volt);border-color:var(--volt);color:var(--volt-ink);font-weight:700}
.pager .next{min-width:auto;border-radius:999px}
.top-link{display:inline-flex;align-items:center;gap:6px;font-size:14px;color:var(--text-3)}
.top-link:hover{color:var(--volt)}

/* ---------- 查阅提示 ---------- */
.tip-section{padding:56px 0 0}
.tip-band{display:grid;grid-template-columns:minmax(0,5fr) minmax(0,7fr);gap:32px;align-items:center;background:var(--surface-800);border:1px solid var(--line);border-radius:var(--r-card);padding:24px;box-shadow:var(--shadow-card)}
.tip-media{position:relative;border-radius:var(--r-sm);overflow:hidden;aspect-ratio:16/10;background:var(--surface-700)}
.tip-media img{width:100%;height:100%;object-fit:cover}
.tip-media .media-bar{position:absolute;left:12px;right:12px;bottom:12px;padding:10px 14px;border-radius:10px;background:rgba(13,21,34,.55);border:1px solid rgba(255,255,255,.10);backdrop-filter:blur(14px);font-size:13px;color:var(--text-2)}
.tip-rows{display:flex;flex-direction:column}
.tip-row{display:grid;grid-template-columns:46px minmax(0,1fr);gap:14px;padding:16px 0;border-bottom:1px solid var(--line)}
.tip-row:first-child{padding-top:0}
.tip-row:last-child{border-bottom:none;padding-bottom:0}
.tip-num{font-size:20px;font-weight:800;color:var(--amber);opacity:.9;line-height:1.2;font-variant-numeric:tabular-nums}
.tip-row h3{font-size:17px;font-weight:600;color:var(--text);margin-bottom:6px}
.tip-row p{font-size:15px;color:var(--text-2);line-height:1.75}

/* ---------- CTA 带 ---------- */
.cta-band{position:relative;margin-top:64px;padding:52px 0;border-top:1px solid var(--line);border-bottom:1px solid var(--line);overflow:hidden;
  background:linear-gradient(90deg,rgba(13,21,34,.96) 0%,rgba(13,21,34,.82) 100%),
             url('/assets/images/backpic/back-3.webp') center/cover no-repeat;}
.cta-band::after{content:"";position:absolute;left:0;top:0;bottom:0;width:3px;background:linear-gradient(180deg,var(--volt),transparent);opacity:.65}
.cta-inner{display:grid;grid-template-columns:minmax(0,8fr) minmax(0,4fr);gap:28px;align-items:center;position:relative;z-index:2}
.cta-inner h2{font-size:clamp(22px,2.6vw,30px);font-weight:700;line-height:1.3;margin-bottom:10px;letter-spacing:-.3px}
.cta-inner p{font-size:15px;color:var(--text-2);line-height:1.8;max-width:560px}
.cta-actions{display:flex;flex-direction:column;align-items:flex-start;gap:10px}
.cta-actions .small{font-size:13px;color:var(--text-3);line-height:1.6}

/* ---------- 页脚 ---------- */
.site-footer{background:#050A11;border-top:1px solid var(--line);padding:56px 0 0}
.footer-grid{display:grid;grid-template-columns:1.4fr 1fr 1fr 1.2fr;gap:32px;padding-bottom:36px}
.footer-brand{display:flex;align-items:center;gap:8px;font-size:20px;font-weight:800;color:var(--text);margin-bottom:14px}
.footer-about{font-size:14px;color:var(--text-3);line-height:1.85;max-width:290px}
.footer-col h3{font-size:15px;font-weight:700;color:var(--text);margin-bottom:14px}
.footer-col ul li{font-size:14px;color:var(--text-3);line-height:1.9;margin-bottom:6px}
.footer-col ul li a{display:inline-block;color:var(--text-3);transition:color .2s ease,transform .2s ease}
.footer-col ul li a:hover{color:var(--volt);transform:translateX(2px)}
.footer-bottom{display:flex;flex-wrap:wrap;gap:12px 24px;align-items:center;justify-content:space-between;border-top:1px solid var(--line);padding:20px 0 28px;font-size:13px;color:var(--text-3);line-height:1.7}
.footer-bottom .links{display:flex;flex-wrap:wrap;gap:18px}
.footer-bottom a{color:var(--text-3)}
.footer-bottom a:hover{color:var(--volt)}

/* ---------- 移动吸底 CTA ---------- */
.sticky-cta{position:fixed;left:0;right:0;bottom:0;z-index:900;display:none;align-items:center;justify-content:space-between;gap:14px;padding:10px 16px calc(10px + env(safe-area-inset-bottom));background:rgba(13,21,34,.72);backdrop-filter:blur(14px);border-top:1px solid rgba(255,255,255,.10)}
.sticky-cta p{font-size:13px;color:var(--text-2);line-height:1.4;margin:0}

/* ---------- 动效 ---------- */
@media (prefers-reduced-motion:no-preference){
  .reveal{opacity:0;transform:translateY(12px);transition:opacity .42s ease-out,transform .42s ease-out}
  .reveal.is-in{opacity:1;transform:translateY(0)}
}
@media (prefers-reduced-motion:reduce){
  *{animation:none !important;transition:none !important;scroll-behavior:auto !important}
  .reveal{opacity:1;transform:none}
}

/* ---------- 响应式 ---------- */
@media (max-width:1199px){
  .notice-layout{grid-template-columns:minmax(0,7fr) minmax(0,5fr)}
}
@media (max-width:991px){
  .nav-toggle{display:inline-flex}
  .header-actions .btn-ghost{display:none}
  .nav-menu{position:fixed;inset:0;display:flex;flex-direction:column;align-items:stretch;justify-content:flex-start;gap:0;
    padding:96px 24px 32px;background:var(--ink-900);transform:translateX(100%);transition:transform .3s ease;overflow-y:auto;z-index:-1}
  .nav-menu.is-open{transform:translateX(0)}
  .nav-menu a{padding:16px 0;font-size:18px;font-weight:600;border-bottom:1px solid var(--line);width:100%}
  .nav-menu a::after{display:none}
  .nav-menu a.active{color:var(--volt)}
  .nav-drawer-cta{display:inline-flex !important;justify-content:center;align-items:center;width:100%;height:46px;padding:0 22px;margin-top:24px;border:none !important;border-radius:999px !important;background:var(--volt);color:var(--volt-ink) !important;font-size:15px !important;font-weight:700}
  .nav-drawer-cta::after{display:none}
  .notice-layout{grid-template-columns:minmax(0,1fr)}
  .side-col{position:static;top:auto}
  .tip-band{grid-template-columns:minmax(0,1fr)}
  .cta-inner{grid-template-columns:minmax(0,1fr)}
  .footer-grid{grid-template-columns:1fr 1fr}
}
@media (max-width:767px){
  .wrap{padding:0 16px}
  .header-inner{padding:0 16px}
  .page-hero{padding:112px 0 44px}
  .hero-bottom{flex-direction:column;align-items:flex-start;gap:20px}
  .hero-stats{gap:26px}
  .stat b{font-size:22px}
  .notice-section{padding:40px 0 0}
  .tip-section{padding:40px 0 0}
  .section-head h2{font-size:22px}
  .notice-item{grid-template-columns:62px minmax(0,1fr);gap:14px;padding:16px}
  .date-block{width:62px;height:62px}
  .date-block b{font-size:22px}
  .notice-arrow{display:none}
  .notice-body h3{font-size:16px}
  .notice-body p{font-size:14px}
  .cta-band{padding:40px 0}
  .footer-grid{grid-template-columns:1fr;gap:26px;padding-bottom:28px}
  .footer-bottom{flex-direction:column;align-items:flex-start;gap:10px}
  .sticky-cta{display:flex}
  body{padding-bottom:78px}
}
@media (max-width:575px){
  .pager a,.pager span{min-width:34px;height:34px;font-size:13px;padding:0 10px}
  .btn{height:44px;padding:0 18px;font-size:14px}
  .cta-actions .btn{width:100%}
}

/* roulang page: category3 */
:root{
  --ink-900:#070C14;
  --surface-800:#0D1522;
  --surface-700:#131E2E;
  --line:rgba(255,255,255,.08);
  --line-strong:rgba(255,255,255,.14);
  --volt:#1FD6A6;
  --volt-hover:#17B98D;
  --volt-active:#12A07A;
  --volt-ink:#04140F;
  --amber:#FF8A4C;
  --text:#E8EEF6;
  --text-2:#A7B6C8;
  --text-3:#6B7C90;
  --info:#5AA9FF;
  --danger:#FF5D5D;
  --radius:16px;
  --radius-sm:12px;
  --shadow:0 8px 24px rgba(0,0,0,.35);
  --shadow-hover:0 14px 36px rgba(0,0,0,.5);
  --bs-body-bg:var(--ink-900);
  --bs-body-color:var(--text);
  --bs-primary:var(--volt);
  --bs-border-color:var(--line);
  --bs-link-color:var(--volt);
  --bs-link-hover-color:var(--volt-hover);
}
*{box-sizing:border-box}
html{scroll-behavior:smooth}
body{
  margin:0;
  background:var(--ink-900);
  color:var(--text);
  font-family:"PingFang SC","HarmonyOS Sans","Microsoft YaHei","Segoe UI",system-ui,-apple-system,sans-serif;
  font-size:16px;
  line-height:1.75;
  -webkit-font-smoothing:antialiased;
  overflow-x:hidden;
}
img{max-width:100%;display:block}
a{color:var(--volt);text-decoration:none;transition:color .2s ease}
a:hover{color:var(--volt-hover)}
h1,h2,h3,h4{margin:0;color:var(--text);letter-spacing:-.3px}
p{margin:0}
ul,ol{margin:0;padding:0;list-style:none}
button{font-family:inherit}
::selection{background:rgba(31,214,166,.28);color:#fff}
.wrap{max-width:1240px;margin:0 auto;padding:0 24px}
.num{font-variant-numeric:tabular-nums}

/* ---------- 导航 ---------- */
.site-header{
  position:fixed;top:0;left:0;right:0;z-index:1020;
  background:transparent;
  transition:background .28s ease,border-color .28s ease,box-shadow .28s ease;
  border-bottom:1px solid transparent;
}
.site-header.scrolled{
  background:rgba(7,12,20,.92);
  border-bottom:1px solid var(--line);
  backdrop-filter:blur(14px);
}
.header-inner{display:flex;align-items:center;gap:28px;height:72px;transition:height .26s ease}
.site-header.scrolled .header-inner{height:60px}
.brand{
  display:inline-flex;align-items:center;gap:8px;
  font-size:20px;font-weight:800;color:var(--text);letter-spacing:-.4px;
  white-space:nowrap;
}
.brand:hover{color:var(--text)}
.brand-dot{width:8px;height:8px;border-radius:50%;background:var(--volt);display:inline-block;box-shadow:0 0 10px rgba(31,214,166,.6)}
.nav-menu{display:flex;align-items:center;gap:26px}
.nav-menu a{
  position:relative;padding:6px 0;
  font-size:15px;font-weight:500;color:var(--text-2);
  transition:color .2s ease;
}
.nav-menu a::after{
  content:"";position:absolute;left:0;bottom:0;height:2px;width:0;
  background:var(--volt);transition:width .25s ease;
}
.nav-menu a:hover,.nav-menu a.active{color:var(--text)}
.nav-menu a:hover::after,.nav-menu a.active::after{width:60%}
.header-actions{margin-left:auto;display:flex;align-items:center;gap:12px}
.btn-ghost{
  display:inline-flex;align-items:center;justify-content:center;
  height:44px;padding:0 18px;border-radius:999px;
  background:transparent;border:1px solid var(--line-strong);
  color:var(--text-2);font-size:15px;font-weight:500;
  transition:all .2s ease;white-space:nowrap;
}
.btn-ghost:hover{border-color:var(--volt);color:var(--volt)}
.btn-ghost:focus-visible{outline:2px solid var(--volt);outline-offset:2px}
.btn-volt{
  display:inline-flex;align-items:center;justify-content:center;gap:8px;
  height:46px;padding:0 22px;border-radius:999px;
  background:var(--volt);color:var(--volt-ink);
  font-size:15px;font-weight:600;border:1px solid transparent;
  transition:all .2s ease;white-space:nowrap;
}
.btn-volt:hover{
  background:var(--volt-hover);color:var(--volt-ink);transform:translateY(-1px);
  box-shadow:0 0 0 1px rgba(31,214,166,.35),0 8px 28px rgba(31,214,166,.28);
}
.btn-volt:active{background:var(--volt-active);transform:translateY(1px);box-shadow:none}
.btn-volt:focus-visible{outline:2px solid var(--volt);outline-offset:2px}
.nav-toggle{
  display:none;width:44px;height:44px;border-radius:12px;
  background:transparent;border:1px solid var(--line-strong);
  color:var(--text);align-items:center;justify-content:center;cursor:pointer;
}
.nav-toggle span{display:block;width:18px;height:2px;background:currentColor;position:relative}
.nav-toggle span::before,.nav-toggle span::after{
  content:"";position:absolute;left:0;width:18px;height:2px;background:currentColor;transition:transform .2s ease
}
.nav-toggle span::before{top:-6px}
.nav-toggle span::after{top:6px}

/* ---------- Hero ---------- */
.page-hero{position:relative;padding:150px 0 70px;overflow:hidden;border-bottom:1px solid var(--line)}
.hero-bg{position:absolute;inset:0;width:100%;height:100%;object-fit:cover;opacity:.28}
.hero-shade{
  position:absolute;inset:0;
  background:
    radial-gradient(680px 360px at 12% 8%,rgba(31,214,166,.16),transparent 62%),
    linear-gradient(180deg,rgba(7,12,20,.55) 0%,rgba(7,12,20,.9) 62%,var(--ink-900) 100%);
}
.hero-grid-lines{
  position:absolute;inset:0;pointer-events:none;opacity:.5;
  background-image:linear-gradient(rgba(255,255,255,.035) 1px,transparent 1px);
  background-size:100% 56px;
}
.hero-content{position:relative;z-index:2;max-width:820px}
.breadcrumb-list{display:flex;flex-wrap:wrap;align-items:center;gap:8px;font-size:14px;color:var(--text-3);margin-bottom:22px}
.breadcrumb-list li{display:inline-flex;align-items:center;gap:8px}
.breadcrumb-list a{color:var(--text-3)}
.breadcrumb-list a:hover{color:var(--volt)}
.breadcrumb-sep{color:var(--text-3);opacity:.6}
.hero-badge{
  display:inline-flex;align-items:center;gap:8px;
  padding:5px 12px;border-radius:6px;margin-bottom:18px;
  background:rgba(31,214,166,.12);color:var(--volt);
  font-size:13px;font-weight:500;letter-spacing:.02em;
}
.page-hero h1{
  font-size:44px;line-height:1.16;font-weight:800;letter-spacing:-.6px;margin-bottom:16px;
}
.page-hero h1 .accent{color:var(--volt)}
.hero-sub{font-size:17px;color:var(--text-2);line-height:1.8;max-width:640px}
.hero-metrics{display:flex;flex-wrap:wrap;gap:36px;margin-top:36px}
.metric{display:flex;flex-direction:column;gap:4px}
.metric strong{font-size:26px;font-weight:800;color:var(--text);line-height:1.2}
.metric span{font-size:13px;color:var(--text-3);letter-spacing:.02em}

/* ---------- 通用板块 ---------- */
.section{padding:72px 0}
.section-head{display:flex;align-items:flex-end;justify-content:space-between;gap:24px;margin-bottom:40px}
.section-head h2{font-size:28px;font-weight:700;line-height:1.3}
.section-head .sub{font-size:15px;color:var(--text-2);margin-top:10px;max-width:640px}
.link-arrow{display:inline-flex;align-items:center;gap:6px;font-size:15px;font-weight:500;color:var(--volt)}
.link-arrow .arrow{transition:transform .2s ease}
.link-arrow:hover .arrow{transform:translateX(4px)}

/* ---------- 时间轴 ---------- */
.timeline{position:relative;padding:6px 0}
.timeline::before{
  content:"";position:absolute;left:23px;top:14px;bottom:14px;width:1px;
  background:linear-gradient(180deg,rgba(31,214,166,.65),rgba(31,214,166,.18) 55%,rgba(255,255,255,.06));
}
.step{position:relative;padding-left:68px;margin-bottom:26px}
.step:last-child{margin-bottom:0}
.step-node{
  position:absolute;left:14px;top:22px;width:19px;height:19px;border-radius:50%;
  background:var(--ink-900);border:2px solid var(--volt);
  box-shadow:0 0 0 5px rgba(31,214,166,.09);
}
.step-card{
  background:var(--surface-800);border:1px solid var(--line);border-radius:var(--radius);
  padding:24px 26px;box-shadow:var(--shadow);
  transition:transform .2s ease,border-color .2s ease,box-shadow .2s ease;
}
.step-card:hover{transform:translateY(-2px);border-color:rgba(31,214,166,.34);box-shadow:var(--shadow-hover)}
.step-top{display:flex;align-items:center;gap:12px;margin-bottom:12px}
.step-no{
  display:inline-flex;align-items:center;justify-content:center;
  min-width:38px;height:26px;padding:0 8px;border-radius:6px;
  background:rgba(255,138,76,.16);color:var(--amber);
  font-size:13px;font-weight:700;letter-spacing:.06em;
}
.step-card h3{font-size:18px;font-weight:600}
.step-body{display:grid;grid-template-columns:1fr;gap:20px}
.step-body.has-media{grid-template-columns:1fr 220px;align-items:start}
.step-body p{font-size:15.5px;line-height:1.8;color:var(--text-2)}
.step-media{
  border-radius:var(--radius-sm);overflow:hidden;border:1px solid var(--line);
  aspect-ratio:16/10;background:var(--surface-700);
}
.step-media img{width:100%;height:100%;object-fit:cover}
.step-tags{display:flex;flex-wrap:wrap;gap:8px;margin-top:14px}
.tag{
  display:inline-flex;align-items:center;height:26px;padding:0 10px;
  border-radius:6px;background:rgba(31,214,166,.12);color:var(--volt);
  font-size:13px;font-weight:500;
}
.tag.neutral{background:rgba(255,255,255,.06);color:var(--text-2)}

/* ---------- 要点提示 ---------- */
.tip-grid{display:grid;grid-template-columns:repeat(2,1fr);gap:20px}
.tip-card{
  position:relative;background:var(--surface-800);border:1px solid var(--line);
  border-radius:var(--radius);padding:24px 24px 24px 28px;
  transition:transform .2s ease,border-color .2s ease,box-shadow .2s ease;
}
.tip-card::before{
  content:"";position:absolute;left:0;top:22px;bottom:22px;width:3px;
  background:var(--volt);border-radius:0 3px 3px 0;opacity:.85;
}
.tip-card:hover{transform:translateY(-2px);border-color:rgba(31,214,166,.3);box-shadow:var(--shadow-hover)}
.tip-card h3{font-size:17px;font-weight:600;margin-bottom:8px}
.tip-card p{font-size:15px;color:var(--text-2);line-height:1.8}

/* ---------- 核对清单 ---------- */
.check-split{display:grid;grid-template-columns:1fr 1fr;gap:40px;align-items:center}
.check-media{
  position:relative;border-radius:var(--radius);overflow:hidden;
  border:1px solid var(--line);aspect-ratio:4/3;box-shadow:var(--shadow);
}
.check-media img{width:100%;height:100%;object-fit:cover}
.check-media .glass-bar{
  position:absolute;left:14px;right:14px;bottom:14px;
  padding:12px 16px;border-radius:12px;
  background:rgba(13,21,34,.55);backdrop-filter:blur(14px);
  border:1px solid rgba(255,255,255,.10);
  font-size:13.5px;color:var(--text-2);
}
.check-list{display:flex;flex-direction:column}
.check-item{
  display:flex;gap:16px;align-items:flex-start;
  padding:18px 0;border-bottom:1px solid var(--line);
}
.check-item:first-child{padding-top:0}
.check-item:last-child{border-bottom:none}
.check-index{
  flex:0 0 auto;width:32px;height:32px;border-radius:50%;
  display:flex;align-items:center;justify-content:center;
  border:1px solid rgba(31,214,166,.4);color:var(--volt);
  font-size:13px;font-weight:700;
}
.check-item h3{font-size:16.5px;font-weight:600;margin-bottom:4px}
.check-item p{font-size:14.5px;color:var(--text-2);line-height:1.7}

/* ---------- FAQ ---------- */
.faq-wrap{max-width:880px}
.faq-item{border-bottom:1px solid var(--line)}
.faq-item:first-child{border-top:1px solid var(--line)}
.faq-q{
  width:100%;display:flex;align-items:center;justify-content:space-between;gap:20px;
  padding:22px 0;background:transparent;border:0;cursor:pointer;
  text-align:left;color:var(--text);font-size:16px;font-weight:600;
  transition:color .2s ease;
}
.faq-q:hover{color:var(--volt)}
.faq-q:focus-visible{outline:2px solid var(--volt);outline-offset:2px;border-radius:6px}
.faq-icon{
  flex:0 0 auto;width:26px;height:26px;border-radius:50%;
  display:flex;align-items:center;justify-content:center;
  border:1px solid var(--line-strong);color:var(--text-2);
  font-size:15px;font-weight:400;line-height:1;
  transition:transform .25s ease,color .2s ease,border-color .2s ease;
}
.faq-item.open .faq-icon{transform:rotate(45deg);color:var(--volt);border-color:rgba(31,214,166,.5)}
.faq-a{max-height:0;overflow:hidden;transition:max-height .32s ease}
.faq-a p{padding:0 46px 22px 0;font-size:15px;line-height:1.85;color:var(--text-2)}

/* ---------- CTA ---------- */
.cta-band{
  position:relative;border-radius:var(--radius);
  background:linear-gradient(120deg,var(--surface-700) 0%,var(--surface-800) 58%);
  border:1px solid rgba(31,214,166,.22);
  padding:44px 44px;
  display:grid;grid-template-columns:1.6fr 1fr;gap:32px;align-items:center;
  box-shadow:0 0 60px rgba(31,214,166,.07) inset;
  overflow:hidden;
}
.cta-band::after{
  content:"";position:absolute;right:-60px;top:-60px;width:280px;height:280px;border-radius:50%;
  background:radial-gradient(circle,rgba(31,214,166,.16),transparent 70%);pointer-events:none;
}
.cta-band h2{font-size:26px;font-weight:700;margin-bottom:10px}
.cta-band p{font-size:15px;color:var(--text-2);max-width:520px}
.cta-side{display:flex;flex-direction:column;align-items:flex-start;gap:10px;position:relative;z-index:2}
.cta-note{font-size:12.5px;color:var(--text-3);letter-spacing:.02em}

/* ---------- 页脚 ---------- */
.site-footer{border-top:1px solid var(--line);background:#050A11;margin-top:24px}
.footer-grid{
  display:grid;grid-template-columns:1.4fr 1fr 1fr 1.2fr;gap:40px;
  padding:56px 0 40px;
}
.footer-brand{
  display:inline-flex;align-items:center;gap:8px;
  font-size:18px;font-weight:800;color:var(--text);margin-bottom:14px;
}
.footer-about{font-size:14px;color:var(--text-3);line-height:1.8;max-width:300px}
.footer-col h3{font-size:14px;font-weight:600;color:var(--text);margin-bottom:16px;letter-spacing:.02em}
.footer-col ul li{font-size:14px;color:var(--text-3);line-height:1.9;margin-bottom:8px}
.footer-col ul li a{color:var(--text-3);transition:color .2s ease,transform .2s ease;display:inline-block}
.footer-col ul li a:hover{color:var(--volt);transform:translateX(2px)}
.footer-bottom{
  display:flex;flex-wrap:wrap;align-items:center;gap:14px 28px;
  padding:20px 0 28px;border-top:1px solid var(--line);
  font-size:13px;color:var(--text-3);
}
.footer-bottom .links{display:flex;flex-wrap:wrap;gap:18px}
.footer-bottom .links a{color:var(--text-3)}
.footer-bottom .links a:hover{color:var(--volt)}

/* ---------- 移动吸底 ---------- */
.mobile-cta{
  display:none;position:fixed;left:0;right:0;bottom:0;z-index:1010;
  align-items:center;justify-content:space-between;gap:14px;
  padding:10px 16px calc(10px + env(safe-area-inset-bottom));
  background:rgba(13,21,34,.55);backdrop-filter:blur(14px);
  border-top:1px solid rgba(255,255,255,.10);
}
.mobile-cta p{font-size:13px;color:var(--text-2);line-height:1.4;margin:0}
.mobile-cta .btn-volt{height:42px;padding:0 18px;font-size:14px}

/* ---------- 动效 ---------- */
.reveal{opacity:0;transform:translateY(12px);transition:opacity .42s ease,transform .42s ease}
.reveal.in{opacity:1;transform:none}

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

/* ---------- 响应式 ---------- */
@media (max-width:1199px){
  .page-hero h1{font-size:40px}
  .footer-grid{grid-template-columns:1.3fr 1fr 1fr;gap:32px}
}
@media (max-width:991px){
  .nav-menu{
    position:fixed;top:72px;left:0;right:0;bottom:0;
    flex-direction:column;align-items:flex-start;gap:0;
    padding:20px 24px 40px;
    background:rgba(7,12,20,.98);backdrop-filter:blur(14px);
    border-top:1px solid var(--line);
    transform:translateY(-8px);opacity:0;visibility:hidden;pointer-events:none;
    transition:opacity .22s ease,transform .22s ease,visibility .22s;
    overflow-y:auto;
  }
  .site-header.scrolled .nav-menu{top:60px}
  .nav-menu.open{opacity:1;transform:none;visibility:visible;pointer-events:auto}
  .nav-menu a{
    width:100%;font-size:18px;font-weight:600;color:var(--text);
    padding:18px 0;border-bottom:1px solid var(--line);
  }
  .nav-menu a::after{display:none}
  .nav-menu a.active{color:var(--volt)}
  .nav-toggle{display:inline-flex}
  .header-actions .btn-ghost{display:none}
  .header-actions .btn-volt{display:none}
  .page-hero{padding:126px 0 56px}
  .page-hero h1{font-size:34px}
  .section{padding:56px 0}
  .section-head{flex-direction:column;align-items:flex-start;gap:14px}
  .check-split{grid-template-columns:1fr;gap:28px}
  .cta-band{grid-template-columns:1fr;padding:32px 26px;gap:24px}
  .step-body.has-media{grid-template-columns:1fr}
  .step-media{order:-1;max-width:320px}
  .timeline::before{left:17px}
  .step{padding-left:52px}
  .step-node{left:8px}
  .footer-grid{grid-template-columns:1fr 1fr;gap:32px;padding:44px 0 32px}
  .mobile-cta{display:flex}
  body{padding-bottom:76px}
}
@media (max-width:767px){
  .tip-grid{grid-template-columns:1fr}
  .hero-metrics{gap:24px}
  .metric strong{font-size:22px}
}
@media (max-width:575px){
  .wrap{padding:0 16px}
  .page-hero{padding:112px 0 44px}
  .page-hero h1{font-size:28px}
  .hero-sub{font-size:15.5px}
  .step-card{padding:20px 18px}
  .step{padding-left:44px}
  .timeline::before{left:13px}
  .step-node{left:4px;width:17px;height:17px}
  .footer-grid{grid-template-columns:1fr;gap:28px}
  .footer-bottom{flex-direction:column;align-items:flex-start;gap:10px}
  .cta-band h2{font-size:22px}
  .section-head h2{font-size:23px}
}

/* roulang page: category2 */
:root{
  --ink-900:#070C14;
  --surface-800:#0D1522;
  --surface-700:#131E2E;
  --line:rgba(255,255,255,.08);
  --line-strong:rgba(255,255,255,.14);
  --volt:#1FD6A6;
  --volt-hover:#17B98D;
  --volt-active:#12A07A;
  --on-volt:#04140F;
  --amber:#FF8A4C;
  --text:#E8EEF6;
  --text-2:#A7B6C8;
  --text-3:#6B7C90;
  --info:#5AA9FF;
  --danger:#FF5D5D;
  --r-card:16px;
  --r-sm:12px;
  --r-badge:6px;
  --shadow-card:0 8px 24px rgba(0,0,0,.35);
  --shadow-hover:0 14px 36px rgba(0,0,0,.5);
  --container:1240px;

  --bs-body-bg:#070C14;
  --bs-body-color:#E8EEF6;
  --bs-primary:#1FD6A6;
  --bs-primary-rgb:31,214,166;
  --bs-border-color:rgba(255,255,255,.08);
  --bs-link-color:#1FD6A6;
  --bs-link-hover-color:#17B98D;
  --bs-border-radius:12px;
  --bs-body-font-family:"PingFang SC","HarmonyOS Sans","Microsoft YaHei",system-ui,-apple-system,"Segoe UI",sans-serif;
}
*,*::before,*::after{box-sizing:border-box;}
html{scroll-behavior:smooth;-webkit-text-size-adjust:100%;}
body{
  margin:0;
  background:var(--ink-900);
  color:var(--text);
  font-family:"PingFang SC","HarmonyOS Sans","Microsoft YaHei",system-ui,-apple-system,"Segoe UI",sans-serif;
  font-size:16px;
  line-height:1.75;
  -webkit-font-smoothing:antialiased;
  overflow-x:hidden;
}
body::before{
  content:"";
  position:fixed;
  inset:0;
  pointer-events:none;
  z-index:0;
  background:
    radial-gradient(760px 420px at 82% -6%, rgba(31,214,166,.10), transparent 68%),
    radial-gradient(560px 380px at 4% 22%, rgba(90,169,255,.06), transparent 70%),
    linear-gradient(rgba(255,255,255,.018) 1px, transparent 1px) 0 0/100% 56px,
    linear-gradient(90deg, rgba(255,255,255,.018) 1px, transparent 1px) 0 0/56px 100%;
}
a{color:var(--volt);text-decoration:none;transition:color .2s ease;}
a:hover{color:var(--volt-hover);}
img{max-width:100%;display:block;}
ul{margin:0;padding:0;list-style:none;}
h1,h2,h3,h4,p{margin:0;}
button{font-family:inherit;}
:focus-visible{outline:2px solid var(--volt);outline-offset:2px;border-radius:6px;}
.wrap{width:100%;max-width:var(--container);margin:0 auto;padding:0 24px;position:relative;z-index:1;}
.num{font-variant-numeric:tabular-nums;}

/* ============ 导航 ============ */
.site-header{
  position:fixed;
  top:0;left:0;right:0;
  z-index:1030;
  background:transparent;
  transition:background .25s ease,border-color .25s ease,box-shadow .25s ease;
  border-bottom:1px solid transparent;
}
.site-header.is-scrolled{
  background:rgba(7,12,20,.92);
  border-bottom:1px solid var(--line);
  backdrop-filter:blur(12px);
  box-shadow:0 6px 24px rgba(0,0,0,.35);
}
.nav-inner{
  display:flex;
  align-items:center;
  gap:22px;
  height:72px;
  transition:height .25s ease;
}
.site-header.is-scrolled .nav-inner{height:60px;}
.brand{
  display:inline-flex;
  align-items:center;
  gap:9px;
  font-size:19px;
  font-weight:800;
  letter-spacing:-.2px;
  color:var(--text);
  text-decoration:none;
  flex-shrink:0;
}
.brand:hover{color:var(--text);}
.brand-dot{
  width:8px;height:8px;
  border-radius:50%;
  background:var(--volt);
  box-shadow:0 0 0 4px rgba(31,214,166,.14);
  flex-shrink:0;
}
.nav-menu{
  display:flex;
  align-items:center;
  gap:24px;
  margin-left:auto;
}
.nav-menu a{
  position:relative;
  display:inline-block;
  padding:6px 0;
  color:var(--text-2);
  font-size:15px;
  font-weight:500;
  text-decoration:none;
  white-space:nowrap;
  transition:color .2s ease;
}
.nav-menu a::after{
  content:"";
  position:absolute;
  left:0;bottom:0;
  width:60%;height:2px;
  border-radius:2px;
  background:var(--volt);
  transform:scaleX(0);
  transform-origin:left center;
  transition:transform .22s ease;
}
.nav-menu a:hover{color:var(--text);}
.nav-menu a:hover::after,
.nav-menu a.active::after{transform:scaleX(1);}
.nav-menu a.active{color:var(--text);font-weight:600;}
.nav-actions{display:flex;align-items:center;gap:12px;flex-shrink:0;}
.btn{
  display:inline-flex;
  align-items:center;
  justify-content:center;
  gap:8px;
  height:46px;
  padding:0 22px;
  border-radius:999px;
  border:1px solid transparent;
  font-size:15px;
  font-weight:600;
  line-height:1;
  text-decoration:none;
  cursor:pointer;
  transition:transform .18s ease,background-color .18s ease,color .18s ease,border-color .18s ease,box-shadow .18s ease;
}
.btn-volt{
  background:var(--volt);
  color:var(--on-volt);
}
.btn-volt:hover{
  background:var(--volt-hover);
  color:var(--on-volt);
  transform:translateY(-1px);
  box-shadow:0 0 0 1px rgba(31,214,166,.35),0 8px 28px rgba(31,214,166,.28);
}
.btn-volt:active{
  background:var(--volt-active);
  transform:translateY(0);
  box-shadow:none;
}
.btn-ghost{
  background:transparent;
  border:1px solid rgba(255,255,255,.18);
  color:var(--text-2);
}
.btn-ghost:hover{
  border-color:var(--volt);
  color:var(--volt);
  transform:translateY(-1px);
}
.btn-ghost:active{transform:translateY(0);}
.btn-sm{height:40px;padding:0 16px;font-size:14px;}
.btn-link{
  display:inline-flex;
  align-items:center;
  gap:6px;
  color:var(--volt);
  font-size:14px;
  font-weight:600;
  background:none;
  border:0;
  padding:6px 0;
  text-decoration:none;
}
.btn-link i{transition:transform .2s ease;}
.btn-link:hover i{transform:translateX(4px);}
.nav-toggle{
  display:none;
  width:44px;height:44px;
  border:1px solid rgba(255,255,255,.16);
  border-radius:12px;
  background:transparent;
  padding:0;
  flex-direction:column;
  align-items:center;
  justify-content:center;
  gap:5px;
  cursor:pointer;
  flex-shrink:0;
}
.nav-toggle span{
  display:block;
  width:18px;height:2px;
  border-radius:2px;
  background:var(--text);
  transition:transform .25s ease,opacity .2s ease;
}
.nav-toggle[aria-expanded="true"] span:nth-child(1){transform:translateY(7px) rotate(45deg);}
.nav-toggle[aria-expanded="true"] span:nth-child(2){opacity:0;}
.nav-toggle[aria-expanded="true"] span:nth-child(3){transform:translateY(-7px) rotate(-45deg);}
.nav-drawer{
  position:fixed;
  inset:0;
  z-index:1020;
  background:rgba(7,12,20,.98);
  padding:92px 20px 36px;
  display:flex;
  flex-direction:column;
  gap:2px;
  opacity:0;
  visibility:hidden;
  transform:translateY(-10px);
  transition:opacity .26s ease,transform .26s ease,visibility .26s ease;
  overflow-y:auto;
}
.nav-drawer.is-open{opacity:1;visibility:visible;transform:none;}
.nav-drawer a.drawer-link{
  display:flex;
  align-items:center;
  justify-content:space-between;
  min-height:54px;
  padding:0 4px;
  font-size:18px;
  font-weight:600;
  color:var(--text);
  border-bottom:1px solid var(--line);
}
.nav-drawer a.drawer-link:hover{color:var(--volt);}
.nav-drawer a.drawer-link i{font-size:13px;color:var(--text-3);}
.nav-drawer .drawer-cta{
  margin-top:22px;
  height:52px;
  border-radius:999px;
  background:var(--volt);
  color:var(--on-volt);
  border:0;
  width:100%;
  font-size:16px;
  font-weight:600;
  display:flex;
  align-items:center;
  justify-content:center;
}
.nav-drawer .drawer-note{
  margin-top:16px;
  font-size:13px;
  color:var(--text-3);
  line-height:1.8;
}

/* ============ 页头 ============ */
.page-hero{
  position:relative;
  padding:132px 0 56px;
  overflow:hidden;
  border-bottom:1px solid var(--line);
}
.page-hero::before{
  content:"";
  position:absolute;
  inset:0;
  background:url(/assets/images/backpic/back-2.png) center/cover no-repeat;
  opacity:.28;
}
.page-hero::after{
  content:"";
  position:absolute;
  inset:0;
  background:
    radial-gradient(720px 320px at 10% 0%, rgba(31,214,166,.16), transparent 70%),
    linear-gradient(180deg,rgba(7,12,20,.30),rgba(7,12,20,.96));
}
.page-hero .wrap{z-index:2;}
.hero-slash{
  position:absolute;
  top:96px;right:-60px;
  width:340px;height:1px;
  background:linear-gradient(90deg,transparent,rgba(31,214,166,.55),transparent);
  transform:rotate(-24deg);
  pointer-events:none;
  z-index:2;
}
.crumb{
  display:flex;
  flex-wrap:wrap;
  align-items:center;
  gap:8px;
  font-size:14px;
  color:var(--text-3);
  margin-bottom:20px;
}
.crumb a{color:var(--text-2);}
.crumb a:hover{color:var(--volt);}
.crumb .sep{color:var(--text-3);opacity:.7;}
.crumb .current{color:var(--text-2);}
.hero-grid{
  display:grid;
  grid-template-columns:1.25fr .75fr;
  gap:36px;
  align-items:end;
}
.eyebrow{
  display:inline-flex;
  align-items:center;
  gap:10px;
  font-size:13px;
  font-weight:500;
  letter-spacing:.2em;
  text-transform:uppercase;
  color:var(--text-3);
  margin-bottom:16px;
}
.eyebrow::before{
  content:"";
  width:26px;height:1px;
  background:rgba(31,214,166,.7);
}
.page-hero h1{
  font-size:clamp(28px,4.1vw,46px);
  font-weight:800;
  line-height:1.16;
  letter-spacing:-.5px;
  margin-bottom:16px;
}
.hero-lead{
  max-width:640px;
  font-size:16px;
  line-height:1.8;
  color:var(--text-2);
}
.metrics{
  display:grid;
  grid-template-columns:repeat(3,1fr);
  gap:14px;
}
.metric{
  background:var(--surface-800);
  border:1px solid var(--line);
  border-radius:var(--r-sm);
  padding:16px 16px 14px;
  transition:border-color .2s ease,transform .2s ease;
}
.metric:hover{border-color:rgba(31,214,166,.3);transform:translateY(-2px);}
.metric .val{
  font-size:24px;
  font-weight:800;
  color:var(--volt);
  line-height:1.2;
  letter-spacing:-.5px;
}
.metric .lbl{
  margin-top:4px;
  font-size:13px;
  color:var(--text-3);
}

/* ============ 板块 ============ */
.section{padding:64px 0;position:relative;}
.section-tight{padding:48px 0;}
.section-head{
  display:flex;
  align-items:flex-end;
  justify-content:space-between;
  gap:24px;
  margin-bottom:26px;
}
.section-head h2{
  font-size:clamp(22px,2.6vw,30px);
  font-weight:700;
  letter-spacing:-.3px;
  line-height:1.3;
}
.section-desc{
  margin-top:10px;
  max-width:640px;
  font-size:15px;
  line-height:1.8;
  color:var(--text-2);
}
.divider{height:1px;background:var(--line);border:0;margin:0;}

/* ============ 首卡 ============ */
.feature-card{
  display:grid;
  grid-template-columns:1.06fr 1fr;
  background:var(--surface-800);
  border:1px solid var(--line);
  border-radius:var(--r-card);
  overflow:hidden;
  box-shadow:var(--shadow-card);
  transition:transform .2s ease,border-color .2s ease,box-shadow .2s ease;
}
.feature-card:hover{
  transform:translateY(-2px);
  border-color:rgba(31,214,166,.34);
  box-shadow:var(--shadow-hover);
}
.feature-media{
  position:relative;
  min-height:280px;
  overflow:hidden;
  background:var(--surface-700);
}
.feature-media img{
  position:absolute;
  inset:0;
  width:100%;
  height:100%;
  object-fit:cover;
  transition:transform .5s ease;
}
.feature-card:hover .feature-media img{transform:scale(1.03);}
.feature-tag{
  position:absolute;
  top:16px;left:16px;
  display:inline-flex;
  align-items:center;
  gap:6px;
  padding:4px 10px;
  border-radius:var(--r-badge);
  background:rgba(13,21,34,.55);
  border:1px solid rgba(255,255,255,.10);
  backdrop-filter:blur(14px);
  font-size:13px;
  font-weight:500;
  color:var(--text);
}
.feature-tag i{color:var(--volt);font-size:11px;}
.feature-body{
  padding:32px 34px;
  display:flex;
  flex-direction:column;
  gap:14px;
}
.feature-body h3{
  font-size:24px;
  font-weight:700;
  line-height:1.35;
  letter-spacing:-.2px;
}
.feature-body h3 a{color:var(--text);}
.feature-body h3 a:hover{color:var(--volt);}
.feature-body p{
  font-size:15px;
  line-height:1.8;
  color:var(--text-2);
}
.feature-body .feature-actions{
  margin-top:auto;
  padding-top:10px;
  display:flex;
  align-items:center;
  gap:18px;
  flex-wrap:wrap;
}
.meta-row{
  display:flex;
  align-items:center;
  flex-wrap:wrap;
  gap:10px;
  font-size:13px;
  color:var(--text-3);
}
.badge-cat{
  display:inline-flex;
  align-items:center;
  padding:3px 9px;
  border-radius:var(--r-badge);
  background:rgba(31,214,166,.12);
  color:var(--volt);
  font-size:13px;
  font-weight:500;
  line-height:1.5;
}
.dot-sep{width:3px;height:3px;border-radius:50%;background:var(--text-3);opacity:.7;}

/* ============ 资讯网格 ============ */
.news-grid{
  display:grid;
  grid-template-columns:repeat(3,1fr);
  gap:24px;
}
.news-card{
  display:flex;
  flex-direction:column;
  background:var(--surface-800);
  border:1px solid var(--line);
  border-radius:var(--r-card);
  overflow:hidden;
  box-shadow:var(--shadow-card);
  transition:transform .2s ease,border-color .2s ease,box-shadow .2s ease;
}
.news-card:hover{
  transform:translateY(-2px);
  border-color:rgba(31,214,166,.32);
  box-shadow:var(--shadow-hover);
}
.news-thumb{
  position:relative;
  aspect-ratio:16/10;
  overflow:hidden;
  background:var(--surface-700);
}
.news-thumb img{
  width:100%;height:100%;
  object-fit:cover;
  transition:transform .45s ease;
}
.news-card:hover .news-thumb img{transform:scale(1.03);}
.news-body{
  padding:20px 22px 22px;
  display:flex;
  flex-direction:column;
  gap:10px;
  flex:1;
}
.news-body h3{
  font-size:17.5px;
  font-weight:600;
  line-height:1.5;
}
.news-body h3 a{color:var(--text);}
.news-body h3 a:hover{color:var(--volt);}
.news-excerpt{
  display:-webkit-box;
  -webkit-line-clamp:2;
  -webkit-box-orient:vertical;
  overflow:hidden;
  font-size:14.5px;
  line-height:1.75;
  color:var(--text-2);
}
.news-meta{
  margin-top:auto;
  padding-top:8px;
  display:flex;
  align-items:center;
  flex-wrap:wrap;
  gap:10px;
  font-size:13px;
  color:var(--text-3);
}

/* ============ 横滑竖屏卡 ============ */
.rail-head{
  display:flex;
  align-items:center;
  justify-content:space-between;
  gap:16px;
  margin-bottom:22px;
}
.rail-nav{display:flex;gap:8px;}
.rail-btn{
  width:36px;height:36px;
  border-radius:50%;
  border:1px solid rgba(255,255,255,.18);
  background:transparent;
  color:var(--text-2);
  display:flex;
  align-items:center;
  justify-content:center;
  cursor:pointer;
  transition:border-color .2s ease,color .2s ease,background-color .2s ease;
}
.rail-btn:hover{border-color:var(--volt);color:var(--volt);background:rgba(31,214,166,.08);}
.rail{
  display:grid;
  grid-auto-flow:column;
  grid-auto-columns:minmax(240px,1fr);
  gap:20px;
  overflow-x:auto;
  scroll-snap-type:x mandatory;
  padding-bottom:10px;
  scrollbar-width:none;
}
.rail::-webkit-scrollbar{display:none;}
.v-card{
  position:relative;
  scroll-snap-align:start;
  border-radius:var(--r-card);
  overflow:hidden;
  border:1px solid var(--line);
  background:var(--surface-800);
  box-shadow:var(--shadow-card);
  transition:transform .2s ease,border-color .2s ease,box-shadow .2s ease;
}
.v-card:hover{
  transform:translateY(-2px);
  border-color:rgba(31,214,166,.32);
  box-shadow:var(--shadow-hover);
}
.v-thumb{
  position:relative;
  aspect-ratio:3/4;
  overflow:hidden;
}
.v-thumb img{
  width:100%;height:100%;
  object-fit:cover;
  transition:transform .5s ease;
}
.v-card:hover .v-thumb img{transform:scale(1.03);}
.duration{
  position:absolute;
  top:10px;right:10px;
  padding:2px 8px;
  border-radius:var(--r-badge);
  background:var(--amber);
  color:#1A0C03;
  font-size:13px;
  font-weight:600;
  font-variant-numeric:tabular-nums;
  line-height:1.6;
}
.play-mark{
  position:absolute;
  inset:0;
  display:flex;
  align-items:center;
  justify-content:center;
  pointer-events:none;
}
.play-mark span{
  width:50px;height:50px;
  border-radius:50%;
  display:flex;
  align-items:center;
  justify-content:center;
  background:rgba(13,21,34,.55);
  border:1px solid rgba(255,255,255,.10);
  backdrop-filter:blur(14px);
  color:var(--text);
  font-size:15px;
}
.v-info{
  position:absolute;
  left:0;right:0;bottom:0;
  padding:14px 14px 16px;
  background:rgba(13,21,34,.55);
  border-top:1px solid rgba(255,255,255,.10);
  backdrop-filter:blur(14px);
}
.v-info h3{
  font-size:15.5px;
  font-weight:600;
  line-height:1.45;
  display:-webkit-box;
  -webkit-line-clamp:2;
  -webkit-box-orient:vertical;
  overflow:hidden;
}
.v-info h3 a{color:var(--text);}
.v-info h3 a:hover{color:var(--volt);}
.v-info p{
  margin-top:6px;
  font-size:13px;
  color:var(--text-2);
  display:-webkit-box;
  -webkit-line-clamp:1;
  -webkit-box-orient:vertical;
  overflow:hidden;
}

/* ============ FAQ ============ */
.faq-wrap{max-width:920px;}
.faq-list{border-top:1px solid var(--line);}
.faq-item{border-bottom:1px solid var(--line);}
.faq-q{
  width:100%;
  display:flex;
  align-items:center;
  justify-content:space-between;
  gap:18px;
  min-height:60px;
  padding:18px 0;
  background:transparent;
  border:0;
  text-align:left;
  color:var(--text);
  font-size:16px;
  font-weight:600;
  line-height:1.6;
  cursor:pointer;
  transition:color .2s ease;
}
.faq-q:hover{color:var(--volt);}
.faq-icon{
  flex-shrink:0;
  width:22px;height:22px;
  display:flex;
  align-items:center;
  justify-content:center;
  color:var(--text-3);
  font-size:14px;
  transition:transform .25s ease,color .25s ease;
}
.faq-item.is-open .faq-icon{transform:rotate(45deg);color:var(--volt);}
.faq-a{
  max-height:0;
  overflow:hidden;
  transition:max-height .3s ease;
}
.faq-a p{
  padding:0 0 20px;
  font-size:15px;
  line-height:1.85;
  color:var(--text-2);
  max-width:760px;
}

/* ============ CTA ============ */
.cta-band{
  position:relative;
  display:grid;
  grid-template-columns:1.45fr .9fr;
  gap:30px;
  align-items:center;
  padding:40px;
  border-radius:20px;
  border:1px solid rgba(31,214,166,.22);
  background:linear-gradient(120deg,rgba(19,30,46,.96),rgba(13,21,34,.96));
  overflow:hidden;
}
.cta-band::before{
  content:"";
  position:absolute;
  inset:-1px;
  background:radial-gradient(460px 220px at 88% 10%,rgba(31,214,166,.18),transparent 70%);
  pointer-events:none;
}
.cta-band h2{
  position:relative;
  font-size:clamp(22px,2.6vw,30px);
  font-weight:700;
  letter-spacing:-.3px;
  line-height:1.35;
  margin-bottom:10px;
}
.cta-band p{
  position:relative;
  font-size:15px;
  line-height:1.8;
  color:var(--text-2);
  max-width:560px;
}
.cta-actions{
  position:relative;
  display:flex;
  flex-direction:column;
  align-items:flex-start;
  gap:10px;
}
.cta-actions .hint{
  font-size:13px;
  color:var(--text-3);
}

/* ============ 页脚 ============ */
.site-footer{
  border-top:1px solid var(--line);
  background:var(--ink-900);
  padding:56px 0 0;
  margin-top:24px;
  position:relative;
  z-index:1;
}
.footer-grid{
  display:grid;
  grid-template-columns:1.5fr 1fr 1fr 1.1fr;
  gap:32px;
  padding-bottom:36px;
}
.footer-brand{
  display:inline-flex;
  align-items:center;
  gap:9px;
  font-size:19px;
  font-weight:800;
  color:var(--text);
  letter-spacing:-.2px;
  margin-bottom:14px;
}
.footer-about{
  font-size:14px;
  line-height:1.85;
  color:var(--text-2);
  max-width:320px;
}
.footer-col h3{
  font-size:15px;
  font-weight:600;
  color:var(--text);
  margin-bottom:14px;
}
.footer-col ul li a{
  display:inline-block;
  padding:5px 0;
  font-size:14px;
  color:var(--text-2);
  transition:color .2s ease,transform .2s ease;
}
.footer-col ul li a:hover{color:var(--volt);transform:translateX(2px);}
.footer-col ul li{
  font-size:14px;
  color:var(--text-2);
  padding:5px 0;
  line-height:1.7;
}
.footer-bottom{
  display:flex;
  flex-wrap:wrap;
  align-items:center;
  justify-content:space-between;
  gap:12px 24px;
  padding:18px 0 22px;
  border-top:1px solid var(--line);
  font-size:13px;
  color:var(--text-3);
}
.footer-bottom .links{display:flex;flex-wrap:wrap;gap:18px;}
.footer-bottom .links a{color:var(--text-3);font-size:13px;}
.footer-bottom .links a:hover{color:var(--volt);}

/* ============ 吸底 CTA ============ */
.sticky-cta{
  display:none;
  position:fixed;
  left:12px;right:12px;
  bottom:calc(12px + env(safe-area-inset-bottom,0px));
  z-index:1035;
  align-items:center;
  justify-content:space-between;
  gap:12px;
  padding:10px 12px 10px 16px;
  border-radius:16px;
  background:rgba(13,21,34,.55);
  border:1px solid rgba(255,255,255,.10);
  backdrop-filter:blur(14px);
  box-shadow:0 12px 30px rgba(0,0,0,.45);
}
.sticky-cta p{
  font-size:13px;
  line-height:1.5;
  color:var(--text-2);
  margin:0;
}
.sticky-cta .btn{height:40px;padding:0 18px;font-size:14px;flex-shrink:0;}

/* ============ 动画 ============ */
.reveal{
  opacity:0;
  transform:translateY(12px);
  transition:opacity .42s ease-out,transform .42s ease-out;
}
.reveal.is-in{opacity:1;transform:none;}
.news-grid > .reveal:nth-child(2){transition-delay:.06s;}
.news-grid > .reveal:nth-child(3){transition-delay:.12s;}
.news-grid > .reveal:nth-child(4){transition-delay:.18s;}
.news-grid > .reveal:nth-child(5){transition-delay:.24s;}
.news-grid > .reveal:nth-child(6){transition-delay:.30s;}

/* ============ 响应式 ============ */
@media (max-width:1199px){
  .nav-menu{gap:18px;}
  .nav-menu a{font-size:14.5px;}
  .hero-grid{grid-template-columns:1.2fr .8fr;gap:28px;}
}
@media (max-width:991px){
  .nav-menu,.nav-actions{display:none;}
  .nav-toggle{display:flex;}
  .nav-inner{gap:12px;}
  .brand{margin-right:auto;}
  .page-hero{padding:112px 0 44px;}
  .hero-grid{grid-template-columns:1fr;gap:26px;align-items:start;}
  .hero-lead{max-width:none;}
  .feature-card{grid-template-columns:1fr;}
  .feature-media{min-height:0;aspect-ratio:16/9;}
  .feature-body{padding:26px 24px 28px;}
  .news-grid{grid-template-columns:repeat(2,1fr);gap:20px;}
  .rail{grid-auto-columns:minmax(220px,1fr);}
  .rail-nav{display:none;}
  .cta-band{grid-template-columns:1fr;padding:32px 26px;gap:22px;}
  .cta-actions{flex-direction:row;align-items:center;gap:16px;flex-wrap:wrap;}
  .footer-grid{grid-template-columns:1fr 1fr;gap:26px;}
  .sticky-cta{display:flex;}
  .site-footer{padding-bottom:84px;}
  .section{padding:52px 0;}
  .section-tight{padding:40px 0;}
}
@media (max-width:767px){
  .wrap{padding:0 18px;}
  .metrics{grid-template-columns:repeat(3,1fr);gap:10px;}
  .metric{padding:12px 12px 10px;}
  .metric .val{font-size:19px;}
  .metric .lbl{font-size:12.5px;}
  .page-hero h1{font-size:clamp(26px,7.4vw,32px);}
  .section-head{flex-direction:column;align-items:flex-start;gap:10px;}
  .feature-body h3{font-size:20px;}
  .footer-bottom{flex-direction:column;align-items:flex-start;gap:10px;}
}
@media (max-width:575px){
  .news-grid{grid-template-columns:1fr;}
  .rail{grid-auto-columns:78%;}
  .feature-body{padding:22px 18px 24px;}
  .cta-band{padding:26px 20px;border-radius:16px;}
  .footer-grid{grid-template-columns:1fr;gap:22px;}
  .hero-slash{display:none;}
  .sticky-cta p{max-width:150px;}
  .v-info h3{font-size:15px;}
}
@media (prefers-reduced-motion:reduce){
  html{scroll-behavior:auto;}
  *,*::before,*::after{
    animation-duration:.001ms !important;
    animation-iteration-count:1 !important;
    transition-duration:.001ms !important;
  }
  .reveal{opacity:1;transform:none;}
}

/* roulang page: category4 */
:root{
  --ink-900:#070C14;
  --surface-800:#0D1522;
  --surface-700:#131E2E;
  --input-bg:#0B1420;
  --line:rgba(255,255,255,.08);
  --line-strong:rgba(255,255,255,.16);
  --volt:#1FD6A6;
  --volt-hover:#17B98D;
  --volt-active:#12A07A;
  --volt-ink:#04140F;
  --amber:#FF8A4C;
  --text:#E8EEF6;
  --text-2:#A7B6C8;
  --text-3:#6B7C90;
  --info:#5AA9FF;
  --danger:#FF5D5D;
  --r-lg:16px;
  --r-sm:12px;
  --shadow-1:0 8px 24px rgba(0,0,0,.35);
  --shadow-2:0 14px 36px rgba(0,0,0,.5);
  --wrap:1240px;
  --bs-body-bg:#070C14;
  --bs-body-color:#E8EEF6;
  --bs-primary:#1FD6A6;
  --bs-border-color:rgba(255,255,255,.08);
  --bs-link-color:#1FD6A6;
  --bs-link-hover-color:#17B98D;
  --bs-border-radius:16px;
  --bs-font-sans-serif:-apple-system,BlinkMacSystemFont,"PingFang SC","HarmonyOS Sans","Microsoft YaHei","Segoe UI",Roboto,Helvetica,Arial,sans-serif;
}
*,*::before,*::after{box-sizing:border-box;}
html{scroll-behavior:smooth;-webkit-text-size-adjust:100%;}
body{
  margin:0;
  background:var(--ink-900);
  color:var(--text);
  font-family:var(--bs-font-sans-serif);
  font-size:16px;
  line-height:1.75;
  -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:64px 64px;
}
img{max-width:100%;display:block;}
a{color:inherit;text-decoration:none;}
p{margin:0 0 1em;}
h1,h2,h3,h4{margin:0;font-weight:800;letter-spacing:-.4px;line-height:1.2;}
ul,ol{margin:0;padding:0;list-style:none;}
button{font-family:inherit;}
:focus-visible{outline:2px solid var(--volt);outline-offset:2px;border-radius:6px;}
.wrap{width:100%;max-width:var(--wrap);margin:0 auto;padding:0 24px;}
.num-font{font-variant-numeric:tabular-nums;font-feature-settings:"tnum";}

/* ============ 顶部导航 ============ */
.site-header{
  position:sticky;top:0;z-index:100;
  background:linear-gradient(180deg,rgba(7,12,20,.86),rgba(7,12,20,.5));
  border-bottom:1px solid transparent;
  transition:background .25s ease,border-color .25s ease,height .25s ease;
  height:72px;
  display:flex;align-items:center;
}
.site-header.scrolled{
  height:60px;
  background:rgba(7,12,20,.92);
  border-bottom-color:var(--line);
  backdrop-filter:blur(14px);
  -webkit-backdrop-filter:blur(14px);
}
.header-inner{display:flex;align-items:center;gap:28px;width:100%;}
.brand{
  display:inline-flex;align-items:center;gap:8px;
  font-size:20px;font-weight:800;letter-spacing:-.3px;color:var(--text);
  white-space:nowrap;
}
.brand-dot{
  width:8px;height:8px;border-radius:50%;background:var(--volt);
  box-shadow:0 0 0 4px rgba(31,214,166,.14);
  display:inline-block;
}
.nav-menu{display:flex;align-items:center;gap:6px;margin-left:auto;}
.nav-menu a{
  position:relative;
  display:inline-flex;align-items:center;
  height:44px;padding:0 12px;
  font-size:15px;font-weight:500;color:var(--text-2);
  border-radius:10px;
  transition:color .2s ease;
}
.nav-menu a::after{
  content:"";position:absolute;left:12px;right:12px;bottom:8px;height:2px;
  background:var(--volt);border-radius:2px;
  transform:scaleX(0);transform-origin:left center;
  transition:transform .25s ease;
}
.nav-menu a:hover{color:var(--text);}
.nav-menu a:hover::after{transform:scaleX(1);}
.nav-menu a.active{color:var(--text);font-weight:600;}
.nav-menu a.active::after{transform:scaleX(1);}
.header-actions{display:flex;align-items:center;gap:10px;}
.btn{
  display:inline-flex;align-items:center;justify-content:center;gap:8px;
  height:46px;padding:0 22px;border-radius:999px;
  font-size:15px;font-weight:600;letter-spacing:.2px;
  border:1px solid transparent;cursor:pointer;
  transition:transform .2s ease,box-shadow .2s ease,background .2s ease,color .2s ease,border-color .2s ease;
  white-space:nowrap;
}
.btn:active{transform:translateY(1px);}
.btn-volt{
  background:var(--volt);color:var(--volt-ink);
  box-shadow:0 0 0 1px rgba(31,214,166,.25),0 8px 24px rgba(31,214,166,.18);
}
.btn-volt:hover{
  background:var(--volt-hover);color:var(--volt-ink);
  transform:translateY(-1px);
  box-shadow:0 0 0 1px rgba(31,214,166,.35),0 10px 30px rgba(31,214,166,.3);
}
.btn-volt:focus-visible{outline:2px solid var(--volt);outline-offset:3px;}
.btn-ghost{
  background:transparent;color:var(--text-2);
  border-color:rgba(255,255,255,.18);
}
.btn-ghost:hover{color:var(--volt);border-color:var(--volt);background:rgba(31,214,166,.06);}
.btn-sm{height:40px;padding:0 18px;font-size:14px;}
.nav-toggle{
  display:none;width:44px;height:44px;border-radius:12px;
  background:transparent;border:1px solid var(--line-strong);
  align-items:center;justify-content:center;flex-direction:column;gap:5px;
  margin-left:auto;cursor:pointer;
}
.nav-toggle span{display:block;width:20px;height:2px;background:var(--text);border-radius:2px;transition:.25s;}
.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);}

/* ============ 移动抽屉 ============ */
.drawer{
  position:fixed;inset:0;z-index:130;
  background:rgba(7,12,20,.98);
  backdrop-filter:blur(14px);
  -webkit-backdrop-filter:blur(14px);
  display:flex;flex-direction:column;
  padding:22px 24px 32px;
  transform:translateY(-102%);
  visibility:hidden;
  transition:transform .34s cubic-bezier(.4,0,.2,1),visibility .34s;
  overflow-y:auto;
}
.drawer.open{transform:translateY(0);visibility:visible;}
.drawer-top{display:flex;align-items:center;justify-content:space-between;margin-bottom:26px;}
.drawer-close{
  width:44px;height:44px;border-radius:12px;background:transparent;
  border:1px solid var(--line-strong);color:var(--text);font-size:20px;cursor:pointer;
}
.drawer nav{display:flex;flex-direction:column;}
.drawer nav a{
  padding:18px 4px;font-size:18px;font-weight:600;color:var(--text-2);
  border-bottom:1px solid var(--line);
  display:flex;align-items:center;justify-content:space-between;
}
.drawer nav a.active,.drawer nav a:hover{color:var(--volt);}
.drawer nav a::after{content:"›";color:var(--text-3);font-size:20px;font-weight:400;}
.drawer .btn{width:100%;margin-top:26px;height:52px;font-size:16px;}

/* ============ 页面头部 ============ */
main{position:relative;z-index:1;}
.page-hero{
  position:relative;
  padding:36px 0 64px;
  overflow:hidden;
}
.page-hero::before{
  content:"";position:absolute;top:-220px;right:-120px;width:640px;height:640px;
  background:radial-gradient(circle,rgba(31,214,166,.14),transparent 62%);
  pointer-events:none;z-index:0;
}
.page-hero::after{
  content:"";position:absolute;top:0;left:0;right:0;height:1px;
  background:linear-gradient(90deg,transparent,rgba(31,214,166,.55),transparent);
  opacity:.6;
}
.crumb{position:relative;z-index:1;margin-bottom:26px;}
.crumb ol{display:flex;flex-wrap:wrap;align-items:center;gap:8px;font-size:14px;color:var(--text-3);}
.crumb li{display:flex;align-items:center;gap:8px;}
.crumb li+li::before{content:"›";color:var(--text-3);}
.crumb a{color:var(--text-3);transition:color .2s;}
.crumb a:hover{color:var(--volt);}
.crumb .current{color:var(--text-2);}
.hero-grid{
  position:relative;z-index:1;
  display:grid;grid-template-columns:minmax(0,1.55fr) minmax(0,1fr);
  gap:48px;align-items:start;
}
.eyebrow{
  display:inline-flex;align-items:center;gap:10px;
  font-size:13px;font-weight:600;letter-spacing:.22em;text-transform:uppercase;
  color:var(--volt);margin-bottom:18px;
}
.eyebrow::before{content:"";width:26px;height:1px;background:var(--volt);display:block;}
.page-hero h1{
  font-size:46px;line-height:1.14;letter-spacing:-.8px;
  margin-bottom:18px;max-width:14em;
}
.page-hero h1 .hl{color:var(--volt);}
.hero-lead{font-size:17px;color:var(--text-2);max-width:34em;margin-bottom:4px;}
.search-box{display:flex;gap:10px;margin-top:28px;max-width:580px;}
.search-box input{
  flex:1;min-width:0;height:50px;
  background:var(--input-bg);
  border:1px solid rgba(255,255,255,.12);
  border-radius:999px;
  padding:0 22px;
  color:var(--text);font-size:15px;
  transition:border-color .2s,box-shadow .2s;
}
.search-box input::placeholder{color:var(--text-3);}
.search-box input:focus{
  outline:none;border-color:var(--volt);
  box-shadow:0 0 0 3px rgba(31,214,166,.18);
}
.search-box .btn{height:50px;padding:0 26px;}
.search-hint{font-size:13px;color:var(--text-3);margin-top:12px;}
.hero-stats{
  display:flex;flex-wrap:wrap;gap:14px 40px;margin-top:34px;
  padding-top:26px;border-top:1px solid var(--line);
}
.hero-stats .stat{display:flex;flex-direction:column;gap:2px;}
.hero-stats .stat b{
  font-size:26px;font-weight:800;color:var(--text);
  font-variant-numeric:tabular-nums;letter-spacing:-.5px;line-height:1.2;
}
.hero-stats .stat b i{font-style:normal;font-size:14px;color:var(--volt);margin-left:2px;}
.hero-stats .stat span{font-size:13px;color:var(--text-3);}

/* 侧栏快捷卡 */
.hero-side{
  background:rgba(13,21,34,.55);
  border:1px solid rgba(255,255,255,.10);
  border-radius:var(--r-lg);
  backdrop-filter:blur(14px);
  -webkit-backdrop-filter:blur(14px);
  padding:24px;
  box-shadow:var(--shadow-1);
}
.hero-side h2{font-size:17px;font-weight:700;margin-bottom:6px;}
.hero-side .side-sub{font-size:13px;color:var(--text-3);margin-bottom:16px;}
.side-list{display:flex;flex-direction:column;}
.side-list a{
  display:flex;align-items:center;gap:12px;
  padding:13px 0;border-top:1px solid var(--line);
  font-size:15px;color:var(--text-2);
  transition:color .2s,transform .2s;
}
.side-list a:hover{color:var(--volt);transform:translateX(2px);}
.side-list .idx{
  font-size:12px;font-weight:700;color:var(--amber);
  font-variant-numeric:tabular-nums;letter-spacing:.08em;flex:none;
}
.side-list .arrow{margin-left:auto;color:var(--text-3);font-size:16px;transition:transform .2s;}
.side-list a:hover .arrow{transform:translateX(4px);color:var(--volt);}

/* ============ 通用板块标题 ============ */
.section{padding:64px 0;position:relative;z-index:1;}
.section-head{margin-bottom:32px;}
.section-head .tag{
  display:inline-block;font-size:12px;font-weight:600;letter-spacing:.18em;
  color:var(--volt);text-transform:uppercase;margin-bottom:12px;
}
.section-head h2{font-size:28px;letter-spacing:-.5px;margin-bottom:10px;}
.section-head p{color:var(--text-2);font-size:15.5px;max-width:52em;margin:0;}

/* ============ 热门快捷卡 ============ */
.quick-grid{
  display:grid;grid-template-columns:repeat(4,minmax(0,1fr));gap:18px;
}
.quick-card{
  display:flex;flex-direction:column;gap:10px;
  background:var(--surface-800);
  border:1px solid var(--line);
  border-radius:var(--r-lg);
  padding:22px;
  box-shadow:var(--shadow-1);
  transition:transform .2s ease,border-color .2s ease,box-shadow .2s ease,background .2s ease;
  min-height:100%;
}
.quick-card:hover{
  transform:translateY(-2px);
  border-color:rgba(31,214,166,.4);
  background:var(--surface-700);
  box-shadow:var(--shadow-2),inset 0 0 0 1px rgba(255,255,255,.06);
}
.quick-card .qnum{
  font-size:13px;font-weight:700;color:var(--amber);
  font-variant-numeric:tabular-nums;letter-spacing:.12em;
}
.quick-card h3{font-size:17px;font-weight:600;line-height:1.45;color:var(--text);}
.quick-card p{font-size:14px;color:var(--text-3);line-height:1.7;margin:0;}
.quick-card .more{
  margin-top:auto;padding-top:8px;
  font-size:14px;font-weight:600;color:var(--volt);
  display:inline-flex;align-items:center;gap:6px;
}
.quick-card .more span{transition:transform .2s ease;display:inline-block;}
.quick-card:hover .more span{transform:translateX(4px);}

/* ============ FAQ 主区 ============ */
.faq-wrap{padding-top:56px;}
.faq-layout{
  display:grid;grid-template-columns:minmax(0,1fr) 340px;gap:48px;align-items:start;
}
.faq-group{margin-bottom:46px;}
.faq-group:last-child{margin-bottom:0;}
.group-head{display:flex;align-items:baseline;gap:14px;margin-bottom:6px;}
.group-head .num{
  font-size:13px;font-weight:700;color:var(--amber);
  font-variant-numeric:tabular-nums;letter-spacing:.18em;flex:none;
}
.group-head h2{font-size:24px;letter-spacing:-.4px;}
.group-desc{font-size:14.5px;color:var(--text-3);margin:0 0 10px 0;}
.faq-item{border-bottom:1px solid var(--line);}
.faq-item summary{
  display:flex;align-items:flex-start;gap:16px;
  padding:20px 0;cursor:pointer;list-style:none;
  font-size:16px;font-weight:600;line-height:1.6;color:var(--text);
  transition:color .2s ease;
}
.faq-item summary::-webkit-details-marker{display:none;}
.faq-item summary:hover{color:var(--volt);}
.faq-icon{
  flex:none;width:28px;height:28px;border-radius:50%;
  border:1px solid var(--line-strong);
  display:grid;place-items:center;
  color:var(--volt);font-size:17px;font-weight:400;line-height:1;
  transition:transform .25s ease,background .25s ease,border-color .25s ease;
  margin-top:2px;
}
.faq-item[open] .faq-icon{
  transform:rotate(45deg);
  background:rgba(31,214,166,.12);
  border-color:rgba(31,214,166,.42);
}
.faq-answer{
  padding:0 44px 22px 44px;
  font-size:15.5px;line-height:1.9;color:var(--text-2);
}
.faq-answer strong{color:var(--text);font-weight:600;}
.faq-empty{
  display:none;padding:48px 0;text-align:center;color:var(--text-3);
}
.faq-empty.show{display:block;}
.faq-empty .ico{
  width:56px;height:56px;border-radius:50%;
  border:1px solid var(--line-strong);
  display:grid;place-items:center;margin:0 auto 16px;
  color:var(--volt);font-size:22px;
}
.faq-empty p{margin:0 0 6px;font-size:15px;color:var(--text-2);}
.faq-empty span{font-size:13px;}

/* 侧栏 */
.side-sticky{position:sticky;top:96px;display:flex;flex-direction:column;gap:20px;}
.side-card{
  background:var(--surface-800);
  border:1px solid var(--line);
  border-radius:var(--r-lg);
  box-shadow:var(--shadow-1);
  overflow:hidden;
}
.side-card .pic{
  position:relative;aspect-ratio:16/9;overflow:hidden;
}
.side-card .pic img{width:100%;height:100%;object-fit:cover;}
.side-card .pic::after{
  content:"";position:absolute;inset:0;
  background:linear-gradient(180deg,rgba(7,12,20,0) 30%,rgba(13,21,34,.9) 100%);
}
.side-card .pic .glass-strip{
  position:absolute;left:12px;right:12px;bottom:12px;z-index:2;
  background:rgba(13,21,34,.55);
  border:1px solid rgba(255,255,255,.10);
  backdrop-filter:blur(14px);
  -webkit-backdrop-filter:blur(14px);
  border-radius:var(--r-sm);
  padding:9px 12px;
  font-size:13px;color:var(--text-2);
}
.side-card .body{padding:22px;}
.side-card h3{font-size:17px;font-weight:700;margin-bottom:8px;}
.side-card p{font-size:14px;color:var(--text-3);line-height:1.75;margin:0 0 16px;}
.side-card .btn{width:100%;}
.side-card.plain{padding:22px;}
.side-nav{display:flex;flex-direction:column;gap:2px;margin-top:14px;}
.side-nav a{
  display:flex;align-items:center;justify-content:space-between;
  padding:12px 12px;border-radius:10px;
  font-size:14.5px;color:var(--text-2);
  transition:background .2s,color .2s,transform .2s;
}
.side-nav a:hover{background:var(--surface-700);color:var(--volt);transform:translateX(2px);}
.side-nav a.active{background:rgba(31,214,166,.10);color:var(--volt);font-weight:600;}
.side-nav a .dot{width:5px;height:5px;border-radius:50%;background:currentColor;opacity:.6;}
.hot-list{display:flex;flex-direction:column;margin-top:12px;}
.hot-list a{
  display:block;padding:12px 0;border-top:1px solid var(--line);
  font-size:14.5px;color:var(--text-2);line-height:1.6;
  transition:color .2s,padding-left .2s;
}
.hot-list a:first-child{border-top:0;}
.hot-list a:hover{color:var(--volt);padding-left:4px;}

/* ============ 相关栏目 ============ */
.related-grid{display:grid;grid-template-columns:repeat(4,minmax(0,1fr));gap:18px;}
.related-card{
  display:flex;flex-direction:column;gap:8px;
  padding:22px;border-radius:var(--r-lg);
  background:var(--surface-800);
  border:1px solid var(--line);
  border-left:3px solid var(--volt);
  transition:transform .2s ease,background .2s ease,border-color .2s ease,box-shadow .2s ease;
  box-shadow:var(--shadow-1);
  min-height:100%;
}
.related-card:hover{
  transform:translateY(-2px);
  background:var(--surface-700);
  box-shadow:var(--shadow-2);
}
.related-card h3{font-size:16.5px;font-weight:600;}
.related-card p{font-size:14px;color:var(--text-3);margin:0;line-height:1.7;}
.related-card .go{
  margin-top:auto;padding-top:6px;font-size:13.5px;font-weight:600;color:var(--volt);
}
.related-card .go span{display:inline-block;transition:transform .2s ease;}
.related-card:hover .go span{transform:translateX(4px);}

/* ============ CTA 带 ============ */
.cta-band{
  position:relative;z-index:1;
  margin:12px 0 72px;
  border-radius:20px;
  background:linear-gradient(120deg,var(--surface-800) 0%,var(--surface-700) 100%);
  border:1px solid rgba(31,214,166,.22);
  box-shadow:0 0 0 1px rgba(31,214,166,.08),0 18px 48px rgba(0,0,0,.45);
  padding:40px 44px;
  display:grid;grid-template-columns:minmax(0,1.5fr) minmax(0,1fr);
  gap:32px;align-items:center;
  overflow:hidden;
}
.cta-band::before{
  content:"";position:absolute;right:-80px;top:-120px;width:420px;height:420px;
  background:radial-gradient(circle,rgba(31,214,166,.16),transparent 65%);
  pointer-events:none;
}
.cta-band h2{font-size:28px;letter-spacing:-.6px;margin-bottom:10px;position:relative;}
.cta-band p{color:var(--text-2);font-size:15.5px;margin:0;max-width:38em;position:relative;}
.cta-right{display:flex;flex-direction:column;align-items:flex-start;gap:10px;position:relative;}
.cta-right .btn{height:52px;padding:0 30px;font-size:16px;}
.cta-right small{font-size:12.5px;color:var(--text-3);}

/* ============ 页脚 ============ */
.site-footer{
  position:relative;z-index:1;
  background:var(--surface-800);
  border-top:1px solid var(--line);
  padding:56px 0 26px;
}
.footer-grid{
  display:grid;grid-template-columns:1.4fr 1fr 1fr 1fr;gap:40px;
  padding-bottom:36px;
}
.footer-brand{
  display:inline-flex;align-items:center;gap:8px;
  font-size:19px;font-weight:800;color:var(--text);margin-bottom:14px;
}
.footer-about{font-size:14px;color:var(--text-3);line-height:1.8;margin:0;max-width:24em;}
.footer-col h3{
  font-size:14px;font-weight:700;color:var(--text);
  margin-bottom:16px;letter-spacing:.02em;
}
.footer-col ul{display:flex;flex-direction:column;gap:10px;}
.footer-col li{font-size:14px;color:var(--text-3);line-height:1.7;}
.footer-col a{
  font-size:14px;color:var(--text-3);
  transition:color .2s ease,transform .2s ease;
  display:inline-block;
}
.footer-col a:hover{color:var(--volt);transform:translateX(2px);}
.footer-bottom{
  border-top:1px solid var(--line);
  padding-top:22px;
  display:flex;flex-wrap:wrap;gap:12px 28px;align-items:center;
  font-size:13px;color:var(--text-3);
}
.footer-bottom .links{display:flex;flex-wrap:wrap;gap:18px;}
.footer-bottom a{color:var(--text-3);transition:color .2s;}
.footer-bottom a:hover{color:var(--volt);}
.footer-bottom .copy{margin-right:auto;}

/* ============ 移动吸底 CTA ============ */
.sticky-cta{
  display:none;
  position:fixed;left:0;right:0;bottom:0;z-index:110;
  height:64px;
  padding:0 16px calc(0px + env(safe-area-inset-bottom));
  align-items:center;justify-content:space-between;gap:12px;
  background:rgba(13,21,34,.72);
  border-top:1px solid rgba(255,255,255,.10);
  backdrop-filter:blur(14px);
  -webkit-backdrop-filter:blur(14px);
}
.sticky-cta p{margin:0;font-size:13px;color:var(--text-2);line-height:1.4;}
.sticky-cta .btn{height:42px;padding:0 18px;font-size:14px;flex:none;}

/* ============ 动效 ============ */
.reveal{opacity:0;transform:translateY(12px);transition:opacity .42s ease-out,transform .42s ease-out;}
.reveal.in{opacity:1;transform:translateY(0);}

/* ============ 响应式 ============ */
@media (max-width:1199.98px){
  .page-hero h1{font-size:40px;}
  .faq-layout{grid-template-columns:minmax(0,1fr) 300px;gap:36px;}
  .quick-grid{grid-template-columns:repeat(2,minmax(0,1fr));}
  .related-grid{grid-template-columns:repeat(2,minmax(0,1fr));}
}
@media (max-width:991.98px){
  .nav-menu,.header-actions{display:none;}
  .nav-toggle{display:flex;}
  .hero-grid{grid-template-columns:1fr;gap:34px;}
  .page-hero{padding:28px 0 48px;}
  .page-hero h1{font-size:36px;}
  .faq-layout{grid-template-columns:1fr;gap:34px;}
  .side-sticky{position:static;}
  .footer-grid{grid-template-columns:1fr 1fr;gap:32px;}
  .cta-band{grid-template-columns:1fr;padding:32px 28px;gap:22px;}
  .cta-right .btn{width:100%;}
  .sticky-cta{display:flex;}
  body{padding-bottom:80px;}
  .section{padding:52px 0;}
}
@media (max-width:767.98px){
  .wrap{padding:0 16px;}
  .page-hero h1{font-size:30px;letter-spacing:-.5px;}
  .hero-lead{font-size:16px;}
  .search-box{flex-direction:column;gap:10px;}
  .search-box input,.search-box .btn{width:100%;height:48px;}
  .hero-stats{gap:12px 28px;}
  .hero-stats .stat b{font-size:22px;}
  .section-head h2{font-size:23px;}
  .group-head h2{font-size:20px;}
  .faq-item summary{font-size:15.5px;gap:12px;padding:18px 0;}
  .faq-answer{padding:0 0 20px 40px;font-size:15px;}
  .quick-grid{grid-template-columns:1fr;gap:14px;}
  .related-grid{grid-template-columns:1fr;gap:14px;}
  .footer-grid{grid-template-columns:1fr;gap:28px;}
  .footer-bottom{flex-direction:column;align-items:flex-start;gap:10px;}
  .cta-band{padding:26px 20px;margin-bottom:56px;}
  .cta-band h2{font-size:22px;}
  .footer-brand{font-size:18px;}
}
@media (max-width:575.98px){
  .brand{font-size:18px;}
  .hero-side{padding:20px;}
  .quick-card{padding:18px;}
}
@media (prefers-reduced-motion:reduce){
  *{animation:none !important;transition:none !important;scroll-behavior:auto !important;}
  .reveal{opacity:1;transform:none;}
}

/* roulang page: category5 */
:root{
  --ink-900:#070C14;
  --surface-800:#0D1522;
  --surface-700:#131E2E;
  --surface-input:#0B1420;
  --line:rgba(255,255,255,.08);
  --line-strong:rgba(255,255,255,.18);
  --volt:#1FD6A6;
  --volt-hover:#17B98D;
  --volt-active:#12A07A;
  --volt-ink:#04140F;
  --amber:#FF8A4C;
  --text:#E8EEF6;
  --text-2:#A7B6C8;
  --text-3:#6B7C90;
  --info:#5AA9FF;
  --danger:#FF5D5D;
  --r-lg:16px;
  --r-sm:12px;
  --r-pill:999px;
  --shadow:0 8px 24px rgba(0,0,0,.35);
  --shadow-hover:0 14px 36px rgba(0,0,0,.5);
  --container:1240px;
  --bs-body-bg:#070C14;
  --bs-body-color:#A7B6C8;
  --bs-primary:#1FD6A6;
  --bs-border-color:rgba(255,255,255,.08);
  --bs-border-radius:12px;
  --bs-link-color:#1FD6A6;
  --bs-link-hover-color:#17B98D;
  --bs-font-sans-serif:"PingFang SC","HarmonyOS Sans","Microsoft YaHei",system-ui,-apple-system,"Segoe UI",sans-serif;
}
*{box-sizing:border-box}
html{scroll-behavior:smooth}
body{
  margin:0;
  padding:0;
  background:var(--ink-900);
  color:var(--text-2);
  font-family:"PingFang SC","HarmonyOS Sans","Microsoft YaHei",system-ui,-apple-system,"Segoe UI",sans-serif;
  font-size:16px;
  line-height:1.75;
  -webkit-font-smoothing:antialiased;
  text-rendering:optimizeLegibility;
  overflow-x:hidden;
}
img{max-width:100%;display:block}
a{color:var(--volt);text-decoration:none;transition:color .2s ease}
a:hover{color:var(--volt-hover)}
h1,h2,h3,h4,p,ul,ol{margin:0}
ul,ol{padding:0;list-style:none}
button{font-family:inherit}
:focus-visible{outline:2px solid var(--volt);outline-offset:2px}
.wrap{max-width:var(--container);margin:0 auto;padding:0 24px}
.num{font-variant-numeric:tabular-nums}

/* ============ 顶部导航 ============ */
.site-header{
  position:fixed;top:0;left:0;right:0;z-index:1000;
  height:72px;
  background:transparent;
  border-bottom:1px solid transparent;
  transition:height .3s ease,background .3s ease,border-color .3s ease,backdrop-filter .3s ease;
}
.site-header.scrolled{
  height:60px;
  background:rgba(7,12,20,.92);
  border-bottom-color:var(--line);
  backdrop-filter:blur(14px);
  -webkit-backdrop-filter:blur(14px);
}
.header-inner{height:100%;display:flex;align-items:center;gap:28px}
.brand{
  display:inline-flex;align-items:center;gap:8px;
  font-size:20px;font-weight:800;letter-spacing:-.4px;
  color:var(--text);white-space:nowrap;
}
.brand:hover{color:var(--text)}
.brand-dot{
  width:8px;height:8px;border-radius:50%;
  background:var(--volt);display:inline-block;
  box-shadow:0 0 10px rgba(31,214,166,.65);
}
.nav-menu{display:flex;align-items:center;gap:24px;margin-left:8px}
.nav-menu a{
  position:relative;display:inline-block;
  padding:6px 0;color:var(--text-2);
  font-size:15px;font-weight:500;white-space:nowrap;
}
.nav-menu a::after{
  content:"";position:absolute;left:0;bottom:0;
  width:60%;height:2px;background:var(--volt);
  transform:scaleX(0);transform-origin:left center;
  transition:transform .25s ease;
}
.nav-menu a:hover{color:var(--text)}
.nav-menu a:hover::after,.nav-menu a.active::after{transform:scaleX(1)}
.nav-menu a.active{color:var(--text)}
.nav-actions{display:flex;align-items:center;gap:12px;margin-left:auto}
.btn{
  display:inline-flex;align-items:center;justify-content:center;gap:8px;
  height:46px;padding:0 22px;border-radius:var(--r-pill);
  font-size:15px;font-weight:600;line-height:1;
  border:1px solid transparent;cursor:pointer;
  transition:background .2s ease,color .2s ease,border-color .2s ease,transform .2s ease,box-shadow .2s ease;
  white-space:nowrap;
}
.btn i{font-size:13px;transition:transform .2s ease}
.btn-volt{
  background:var(--volt);color:var(--volt-ink);
  box-shadow:0 0 0 1px rgba(31,214,166,.35),0 8px 28px rgba(31,214,166,.28);
}
.btn-volt:hover{background:var(--volt-hover);color:var(--volt-ink);transform:translateY(-1px)}
.btn-volt:active{background:var(--volt-active);transform:translateY(0)}
.btn-ghost{background:transparent;color:var(--text);border-color:var(--line-strong)}
.btn-ghost:hover{border-color:var(--volt);color:var(--volt)}
.btn-text{
  display:inline-flex;align-items:center;gap:6px;
  height:44px;color:var(--text);font-size:15px;font-weight:600;background:none;border:0;padding:0;
}
.btn-text:hover{color:var(--volt)}
.btn-text:hover i{transform:translateX(4px)}
.btn-sm{height:42px;padding:0 18px;font-size:14px}
.nav-toggle{
  display:none;width:44px;height:44px;border-radius:12px;
  background:rgba(255,255,255,.04);border:1px solid var(--line-strong);
  cursor:pointer;position:relative;
}
.nav-toggle span{
  position:absolute;left:12px;right:12px;height:2px;border-radius:2px;
  background:var(--text);transition:transform .25s ease,opacity .2s ease;
}
.nav-toggle span:nth-child(1){top:15px}
.nav-toggle span:nth-child(2){top:21px}
.nav-toggle span:nth-child(3){top:27px}
body.drawer-open .nav-toggle span:nth-child(1){transform:translateY(6px) rotate(45deg)}
body.drawer-open .nav-toggle span:nth-child(2){opacity:0}
body.drawer-open .nav-toggle span:nth-child(3){transform:translateY(-6px) rotate(-45deg)}

/* ============ 移动端抽屉 ============ */
.mobile-drawer{
  position:fixed;inset:0;z-index:999;
  background:rgba(7,12,20,.98);
  backdrop-filter:blur(16px);
  padding:96px 24px 120px;
  display:flex;flex-direction:column;
  opacity:0;visibility:hidden;transform:translateY(-12px);
  transition:opacity .25s ease,transform .25s ease,visibility .25s;
}
body.drawer-open .mobile-drawer{opacity:1;visibility:visible;transform:translateY(0)}
.mobile-drawer a.drawer-link{
  display:flex;align-items:center;justify-content:space-between;
  padding:18px 4px;font-size:18px;font-weight:600;color:var(--text);
  border-bottom:1px solid var(--line);
}
.mobile-drawer a.drawer-link:hover,.mobile-drawer a.drawer-link.active{color:var(--volt)}
.mobile-drawer a.drawer-link i{font-size:13px;color:var(--text-3)}
.mobile-drawer .drawer-cta{margin-top:28px}

/* ============ 通用区块 ============ */
.section{padding:88px 0}
.section-tight{padding:64px 0}
.eyebrow{
  display:inline-block;font-size:13px;font-weight:600;letter-spacing:.14em;
  color:var(--volt);text-transform:uppercase;margin-bottom:14px;
}
.sec-head{margin-bottom:36px;max-width:760px}
.sec-head h2{
  font-size:28px;font-weight:700;line-height:1.3;color:var(--text);letter-spacing:-.3px;
}
.sec-head p{margin-top:12px;font-size:16px;color:var(--text-2);line-height:1.8}
.rule{height:1px;background:var(--line);border:0;margin:0}
.badge-soft{
  display:inline-flex;align-items:center;gap:6px;
  padding:4px 10px;border-radius:6px;
  background:rgba(31,214,166,.12);color:var(--volt);
  font-size:13px;font-weight:600;line-height:1.5;
}
.badge-amber{
  display:inline-flex;align-items:center;gap:6px;
  padding:4px 10px;border-radius:6px;
  background:rgba(255,138,76,.16);color:var(--amber);
  font-size:13px;font-weight:600;line-height:1.5;
}

/* ============ 页面头部 ============ */
.page-hero{
  position:relative;
  padding:150px 0 76px;
  background:
    radial-gradient(900px 480px at 82% -8%,rgba(31,214,166,.12),transparent 62%),
    radial-gradient(620px 380px at 6% 12%,rgba(90,169,255,.07),transparent 66%),
    var(--ink-900);
  overflow:hidden;
}
.page-hero::before{
  content:"";position:absolute;inset:0;
  background-image:linear-gradient(rgba(255,255,255,.028) 1px,transparent 1px),linear-gradient(90deg,rgba(255,255,255,.028) 1px,transparent 1px);
  background-size:64px 64px;
  mask-image:radial-gradient(circle at 60% 20%,rgba(0,0,0,.85),transparent 72%);
  -webkit-mask-image:radial-gradient(circle at 60% 20%,rgba(0,0,0,.85),transparent 72%);
  pointer-events:none;
}
.page-hero .wrap{position:relative;z-index:2}
.crumb{
  display:flex;flex-wrap:wrap;align-items:center;gap:8px;
  font-size:14px;color:var(--text-3);margin-bottom:28px;
}
.crumb li{display:inline-flex;align-items:center;gap:8px}
.crumb li::after{content:"›";color:var(--text-3)}
.crumb li:last-child::after{display:none}
.crumb a{color:var(--text-3)}
.crumb a:hover{color:var(--volt)}
.crumb li[aria-current]{color:var(--text-2)}
.page-hero-grid{
  display:grid;grid-template-columns:1.05fr .95fr;gap:48px;align-items:center;
}
.page-hero h1{
  font-size:44px;font-weight:800;line-height:1.15;letter-spacing:-.5px;color:var(--text);
  margin-bottom:18px;
}
.page-hero h1 em{font-style:normal;color:var(--volt)}
.page-hero .lead{
  font-size:17px;line-height:1.85;color:var(--text-2);max-width:560px;
}
.hero-actions{display:flex;flex-wrap:wrap;gap:14px;margin-top:30px}
.hero-metrics{
  display:flex;flex-wrap:wrap;gap:36px;margin-top:38px;
  padding-top:26px;border-top:1px solid var(--line);
}
.hero-metrics .metric strong{
  display:block;font-size:26px;font-weight:800;color:var(--text);
  line-height:1.2;font-variant-numeric:tabular-nums;letter-spacing:-.5px;
}
.hero-metrics .metric span{font-size:13px;color:var(--text-3)}
.hero-visual{
  position:relative;border-radius:var(--r-lg);overflow:hidden;
  aspect-ratio:16/11;background:var(--surface-800);
  border:1px solid var(--line);box-shadow:var(--shadow);
}
.hero-visual img{width:100%;height:100%;object-fit:cover}
.hero-visual .glass-bar{
  position:absolute;left:14px;right:14px;bottom:14px;
  padding:14px 16px;border-radius:var(--r-sm);
  background:rgba(13,21,34,.55);
  border:1px solid rgba(255,255,255,.10);
  backdrop-filter:blur(14px);-webkit-backdrop-filter:blur(14px);
  display:flex;align-items:center;justify-content:space-between;gap:14px;
}
.hero-visual .glass-bar p{font-size:14px;color:var(--text);font-weight:600;line-height:1.5}
.hero-visual .glass-bar span{font-size:13px;color:var(--text-2);white-space:nowrap}

/* ============ 表单 + 信息卡 ============ */
.contact-grid{display:grid;grid-template-columns:1fr 1fr;gap:32px;align-items:start}
.panel{
  background:var(--surface-800);border:1px solid var(--line);
  border-radius:var(--r-lg);padding:34px;box-shadow:var(--shadow);
}
.panel h2{font-size:24px;font-weight:700;color:var(--text);letter-spacing:-.3px}
.panel .panel-desc{margin-top:10px;font-size:15px;color:var(--text-3);line-height:1.8}
.form-row{display:grid;grid-template-columns:1fr 1fr;gap:18px}
.field{margin-top:20px}
.field label{
  display:block;font-size:13px;font-weight:500;color:var(--text-3);
  margin-bottom:8px;letter-spacing:.02em;
}
.field input[type="text"],
.field input[type="tel"],
.field input[type="email"],
.field select,
.field textarea{
  width:100%;
  background:var(--surface-input);
  border:1px solid rgba(255,255,255,.12);
  border-radius:var(--r-sm);
  color:var(--text);
  font-size:15px;line-height:1.6;
  padding:12px 14px;
  transition:border-color .2s ease,box-shadow .2s ease,background .2s ease;
  appearance:none;
}
.field textarea{min-height:132px;resize:vertical}
.field select{
  background-image:url("data:image/svg+xml;utf8,<svg xmlns='http://www.w3.org/2000/svg' width='14' height='14' viewBox='0 0 24 24' fill='none' stroke='%236B7C90' stroke-width='2.4' stroke-linecap='round' stroke-linejoin='round'><polyline points='6 9 12 15 18 9'/></svg>");
  background-repeat:no-repeat;background-position:right 14px center;
  padding-right:40px;
}
.field input::placeholder,.field textarea::placeholder{color:#4E5E71}
.field input:focus,.field select:focus,.field textarea:focus{
  outline:none;border-color:var(--volt);
  box-shadow:0 0 0 3px rgba(31,214,166,.18);
  background:#0C1624;
}
.field.has-error input,.field.has-error select,.field.has-error textarea{
  border-color:var(--danger);
}
.field-error{
  display:none;margin-top:8px;font-size:12.5px;color:var(--danger);line-height:1.6;
}
.field.has-error .field-error{display:block}
.check-line{display:flex;align-items:flex-start;gap:10px;margin-top:24px}
.check-line input{
  width:18px;height:18px;margin-top:3px;flex:0 0 auto;
  accent-color:var(--volt);cursor:pointer;
}
.check-line label{font-size:14px;color:var(--text-2);line-height:1.7;cursor:pointer}
.check-line a{color:var(--volt)}
.form-submit{display:flex;align-items:center;gap:16px;margin-top:26px;flex-wrap:wrap}
.form-submit .hint{font-size:13px;color:var(--text-3)}
.form-done{
  display:none;margin-top:20px;padding:14px 16px;border-radius:var(--r-sm);
  background:rgba(31,214,166,.10);border:1px solid rgba(31,214,166,.35);
  color:var(--volt);font-size:14px;line-height:1.7;
}
.form-done.show{display:block}

.info-stack{display:grid;gap:18px}
.info-card{
  position:relative;
  background:var(--surface-800);border:1px solid var(--line);
  border-radius:var(--r-lg);padding:24px 26px 24px 30px;
  box-shadow:var(--shadow);
  transition:transform .2s ease,border-color .2s ease,box-shadow .2s ease;
}
.info-card::before{
  content:"";position:absolute;left:0;top:22px;bottom:22px;width:3px;
  border-radius:3px;background:var(--volt);
}
.info-card:hover{transform:translateY(-2px);border-color:rgba(255,255,255,.16);box-shadow:var(--shadow-hover)}
.info-card h3{
  display:flex;align-items:center;gap:10px;
  font-size:17px;font-weight:600;color:var(--text);margin-bottom:8px;
}
.info-card h3 i{color:var(--volt);font-size:15px}
.info-card p{font-size:15px;color:var(--text-2);line-height:1.8}
.info-card .meta-line{font-size:13px;color:var(--text-3);margin-top:8px}

/* ============ 合作流程三步 ============ */
.steps-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:22px}
.step-card{
  background:var(--surface-800);border:1px solid var(--line);
  border-radius:var(--r-lg);padding:28px;
  transition:transform .2s ease,border-color .2s ease,box-shadow .2s ease;
}
.step-card:hover{transform:translateY(-2px);border-color:rgba(255,255,255,.16);box-shadow:var(--shadow-hover)}
.step-no{
  font-size:34px;font-weight:800;line-height:1;
  color:var(--amber);opacity:.9;
  font-variant-numeric:tabular-nums;letter-spacing:-1px;
  margin-bottom:16px;
}
.step-card h3{font-size:17px;font-weight:600;color:var(--text);margin-bottom:10px}
.step-card p{font-size:15px;color:var(--text-2);line-height:1.8}
.step-card .tag{margin-top:16px}

/* ============ 图片信息区 ============ */
.visual-band{
  position:relative;border-radius:var(--r-lg);overflow:hidden;
  aspect-ratio:21/9;border:1px solid var(--line);box-shadow:var(--shadow);
}
.visual-band img{width:100%;height:100%;object-fit:cover}
.visual-band .glass-bar{
  position:absolute;left:18px;right:18px;bottom:18px;
  padding:18px 22px;border-radius:var(--r-sm);
  background:rgba(13,21,34,.55);
  border:1px solid rgba(255,255,255,.10);
  backdrop-filter:blur(14px);-webkit-backdrop-filter:blur(14px);
  display:flex;align-items:center;justify-content:space-between;gap:18px;flex-wrap:wrap;
}
.visual-band .glass-bar h3{font-size:17px;font-weight:600;color:var(--text)}
.visual-band .glass-bar p{font-size:14px;color:var(--text-2);margin-top:4px}

/* ============ 提交须知 ============ */
.notes-box{
  background:var(--surface-800);border:1px solid var(--line);
  border-radius:var(--r-lg);padding:32px 34px;box-shadow:var(--shadow);
}
.notes-box h2{font-size:22px;font-weight:700;color:var(--text)}
.notes-list{margin-top:18px;display:grid;gap:12px}
.notes-list li{
  position:relative;padding-left:20px;
  font-size:14px;line-height:1.9;color:var(--text-2);
}
.notes-list li::before{
  content:"";position:absolute;left:0;top:12px;
  width:6px;height:6px;border-radius:50%;background:var(--volt);
}
.notes-list li strong{color:var(--text);font-weight:600}

/* ============ FAQ ============ */
.faq-list{border-top:1px solid var(--line)}
.faq-item{border-bottom:1px solid var(--line)}
.faq-q{
  width:100%;display:flex;align-items:center;justify-content:space-between;gap:20px;
  padding:20px 0;background:none;border:0;cursor:pointer;
  text-align:left;font-size:16px;font-weight:600;color:var(--text);line-height:1.6;
  transition:color .2s ease;
}
.faq-q:hover{color:var(--volt)}
.faq-q .ico{
  flex:0 0 auto;width:26px;height:26px;border-radius:50%;
  display:flex;align-items:center;justify-content:center;
  border:1px solid var(--line-strong);color:var(--text-2);
  font-size:14px;transition:transform .25s ease,color .2s ease,border-color .2s ease;
}
.faq-item.open .faq-q .ico{transform:rotate(45deg);color:var(--volt);border-color:var(--volt)}
.faq-a{
  max-height:0;overflow:hidden;
  transition:max-height .3s ease;
}
.faq-a p{
  padding:0 0 22px;font-size:15px;line-height:1.85;color:var(--text-2);max-width:900px;
}

/* ============ CTA 带 ============ */
.cta-band{
  position:relative;overflow:hidden;
  border-radius:var(--r-lg);
  background:linear-gradient(120deg,#0B1522 0%,#0D1B2B 52%,#0A1A24 100%);
  border:1px solid rgba(31,214,166,.22);
  box-shadow:0 14px 44px rgba(0,0,0,.45),0 0 0 1px rgba(31,214,166,.08);
  padding:46px 46px;
  display:grid;grid-template-columns:1.25fr .75fr;gap:36px;align-items:center;
}
.cta-band::after{
  content:"";position:absolute;right:-90px;top:-90px;width:340px;height:340px;
  border-radius:50%;background:radial-gradient(circle,rgba(31,214,166,.16),transparent 68%);
  pointer-events:none;
}
.cta-band h2{font-size:28px;font-weight:800;color:var(--text);letter-spacing:-.3px;line-height:1.3}
.cta-band p{margin-top:12px;font-size:15px;color:var(--text-2);line-height:1.8;max-width:520px}
.cta-band .cta-right{display:flex;flex-direction:column;align-items:flex-start;gap:12px;position:relative;z-index:2}
.cta-band .cta-right .tip{font-size:12.5px;color:var(--text-3)}

/* ============ 页脚 ============ */
.site-footer{
  border-top:1px solid var(--line);
  background:var(--ink-900);
  padding:64px 0 0;
  margin-top:24px;
}
.footer-grid{
  display:grid;grid-template-columns:1.4fr 1fr 1fr 1fr;gap:36px;
  padding-bottom:44px;
}
.footer-brand{
  display:inline-flex;align-items:center;gap:8px;
  font-size:19px;font-weight:800;color:var(--text);letter-spacing:-.3px;margin-bottom:14px;
}
.footer-about{font-size:14px;line-height:1.85;color:var(--text-3);max-width:280px}
.footer-col h3{
  font-size:14px;font-weight:600;color:var(--text);
  margin-bottom:16px;letter-spacing:.02em;
}
.footer-col ul li{margin-bottom:10px;font-size:14px;color:var(--text-3);line-height:1.7}
.footer-col ul li a{
  color:var(--text-3);display:inline-block;
  transition:color .2s ease,transform .2s ease;
}
.footer-col ul li a:hover{color:var(--volt);transform:translateX(2px)}
.footer-bottom{
  border-top:1px solid var(--line);
  padding:22px 0 28px;
  display:flex;flex-wrap:wrap;gap:12px 24px;align-items:center;justify-content:space-between;
  font-size:13px;color:var(--text-3);
}
.footer-bottom .links{display:flex;flex-wrap:wrap;gap:18px}
.footer-bottom .links a{color:var(--text-3)}
.footer-bottom .links a:hover{color:var(--volt)}

/* ============ 移动吸底 CTA ============ */
.mobile-cta{
  display:none;
  position:fixed;left:0;right:0;bottom:0;z-index:900;
  height:64px;padding:0 16px;
  align-items:center;justify-content:space-between;gap:14px;
  background:rgba(13,21,34,.72);
  border-top:1px solid rgba(255,255,255,.10);
  backdrop-filter:blur(14px);-webkit-backdrop-filter:blur(14px);
  padding-bottom:env(safe-area-inset-bottom);
}
.mobile-cta p{font-size:13px;color:var(--text-2);line-height:1.5;margin:0}
.mobile-cta .btn{height:42px;padding:0 18px;font-size:14px}

/* ============ 动效 ============ */
.reveal{opacity:0;transform:translateY(12px);transition:opacity .42s ease-out,transform .42s ease-out}
.reveal.in{opacity:1;transform:translateY(0)}

/* ============ 响应式 ============ */
@media (max-width:1199px){
  .page-hero h1{font-size:38px}
  .nav-menu{gap:18px}
}
@media (max-width:991px){
  .nav-menu{display:none}
  .nav-actions{display:none}
  .nav-toggle{display:block;margin-left:auto}
  .page-hero{padding:124px 0 60px}
  .page-hero-grid{grid-template-columns:1fr;gap:32px}
  .page-hero h1{font-size:34px}
  .hero-visual{aspect-ratio:16/10}
  .contact-grid{grid-template-columns:1fr;gap:26px}
  .steps-grid{grid-template-columns:1fr 1fr}
  .cta-band{grid-template-columns:1fr;padding:36px 30px}
  .footer-grid{grid-template-columns:1fr 1fr;gap:30px}
  .visual-band{aspect-ratio:16/9}
  .section{padding:64px 0}
  .mobile-cta{display:flex}
  body{padding-bottom:64px}
}
@media (max-width:767px){
  .wrap{padding:0 16px}
  .page-hero h1{font-size:30px}
  .page-hero .lead{font-size:16px}
  .hero-metrics{gap:26px}
  .hero-metrics .metric strong{font-size:22px}
  .panel{padding:24px 20px}
  .form-row{grid-template-columns:1fr}
  .steps-grid{grid-template-columns:1fr}
  .sec-head h2{font-size:23px}
  .cta-band h2{font-size:23px}
  .notes-box{padding:24px 20px}
  .visual-band{aspect-ratio:4/3}
  .visual-band .glass-bar{padding:14px 16px}
  .footer-grid{grid-template-columns:1fr;gap:26px}
  .footer-bottom{flex-direction:column;align-items:flex-start}
}
@media (max-width:520px){
  .page-hero{padding:112px 0 52px}
  .page-hero h1{font-size:26px;line-height:1.25}
  .hero-actions .btn{width:100%}
  .cta-band{padding:28px 22px}
  .cta-band .cta-right{width:100%}
  .cta-band .cta-right .btn{width:100%}
  .mobile-cta .btn{padding:0 14px}
  .mobile-cta p{font-size:12.5px}
}
@media (prefers-reduced-motion:reduce){
  *{animation:none !important;transition:none !important}
  html{scroll-behavior:auto}
  .reveal{opacity:1;transform:none}
}