/* roulang page: index */
:root{
  --bg:#060f16;
  --bg-2:#08131c;
  --panel:rgba(255,255,255,.045);
  --line:rgba(130,225,235,.16);
  --brand:#2fd4c8;
  --brand-2:#6b7bff;
  --accent:#ffb45c;
  --text-1:#e8f4f8;
  --text-2:rgba(232,244,248,.68);
  --glow:rgba(47,212,200,.35);
  --r-card:18px;
  --r-btn:12px;
  --r-img:14px;
  --shadow-card:0 24px 48px rgba(0,0,0,.45), 0 0 0 1px rgba(255,255,255,.06) inset;
}
*,*::before,*::after{box-sizing:border-box}
html{scroll-behavior:smooth;-webkit-text-size-adjust:100%}
body{
  margin:0;
  font-family:-apple-system,"PingFang SC","Microsoft YaHei","Noto Sans SC",sans-serif;
  font-size:16px;
  line-height:1.8;
  color:var(--text-1);
  background-color:var(--bg);
  background-image:
    radial-gradient(900px 620px at 10% -6%, rgba(47,212,200,.11), transparent 70%),
    radial-gradient(820px 640px at 94% 6%, rgba(107,123,255,.11), transparent 70%),
    linear-gradient(rgba(130,225,235,.04) 1px, transparent 1px),
    linear-gradient(90deg, rgba(130,225,235,.04) 1px, transparent 1px);
  background-size:auto,auto,44px 44px,44px 44px;
  background-repeat:no-repeat,no-repeat,repeat,repeat;
  background-attachment:fixed,fixed,fixed,fixed;
  -webkit-font-smoothing:antialiased;
  overflow-x:hidden;
}
img{max-width:100%;display:block;border-style:none}
a{color:inherit;text-decoration:none;transition:color .2s ease-out,border-color .2s ease-out}
a:hover{color:var(--brand)}
button,input,textarea,select{font:inherit;color:inherit}
h1,h2,h3,h4,p,ul,ol{margin:0}
ul,ol{padding:0;list-style:none}
:focus-visible{outline:2px solid var(--brand);outline-offset:2px;border-radius:8px}
.container-x{width:100%;max-width:1200px;margin:0 auto;padding:0 32px}
.grid-bg{
  background-image:
    linear-gradient(rgba(130,225,235,.05) 1px, transparent 1px),
    linear-gradient(90deg, rgba(130,225,235,.05) 1px, transparent 1px);
  background-size:44px 44px;
}
.glass{
  background:var(--panel);
  border:1px solid var(--line);
  border-radius:var(--r-card);
  box-shadow:var(--shadow-card);
  backdrop-filter:blur(12px);
  -webkit-backdrop-filter:blur(12px);
}
.card-hover{transition:transform .2s ease-out,border-color .2s ease-out,box-shadow .2s ease-out}
.card-hover:hover{
  transform:translateY(-4px);
  border-color:rgba(130,225,235,.42);
  box-shadow:0 28px 56px rgba(0,0,0,.5), 0 0 26px rgba(47,212,200,.16), 0 0 0 1px rgba(255,255,255,.08) inset;
}
.chip{
  display:inline-flex;align-items:center;gap:6px;
  font-size:12px;line-height:1;padding:6px 10px;border-radius:999px;
  background:rgba(255,255,255,.05);border:1px solid var(--line);color:var(--text-2);
  white-space:nowrap;
}
.chip-brand{color:var(--brand);border-color:rgba(47,212,200,.34)}
.chip-accent{color:var(--accent);border-color:rgba(255,180,92,.3)}
.kicker{display:inline-block;font-size:12.5px;line-height:1.6;color:var(--brand);margin-bottom:12px}
.btn{
  display:inline-flex;align-items:center;justify-content:center;gap:8px;
  font-size:15px;font-weight:600;line-height:1;
  padding:13px 24px;border-radius:var(--r-btn);
  border:1px solid transparent;cursor:pointer;
  transition:all .2s ease-out;white-space:nowrap;
}
.btn-primary{background:var(--brand);color:#04211f;box-shadow:0 0 24px var(--glow)}
.btn-primary:hover{filter:brightness(1.08);box-shadow:0 0 34px rgba(47,212,200,.52);color:#04211f}
.btn-primary:active{transform:scale(.98)}
.btn-primary:disabled{opacity:.45;box-shadow:none;cursor:not-allowed}
.btn-ghost{background:transparent;border-color:var(--line);color:var(--text-1)}
.btn-ghost:hover{background:rgba(47,212,200,.1);border-color:rgba(47,212,200,.46);color:var(--brand)}
.btn-ghost:active{transform:scale(.98)}
.btn-glow{box-shadow:0 0 24px var(--glow)}
.btn-glow:hover{box-shadow:0 0 34px rgba(47,212,200,.52)}

/* 顶部导航 */
.site-header{
  position:fixed;top:0;left:0;right:0;z-index:80;height:70px;
  display:flex;align-items:center;
  background:rgba(6,15,22,.72);
  backdrop-filter:blur(14px);-webkit-backdrop-filter:blur(14px);
  border-bottom:1px solid var(--line);
  transition:background .25s ease-out;
}
.site-header.scrolled{background:rgba(6,15,22,.94)}
.nav-wrap{display:flex;align-items:center;justify-content:space-between;gap:24px;width:100%;max-width:1200px;margin:0 auto;padding:0 32px}
.logo{display:inline-flex;align-items:center;gap:10px}
.logo-mark{
  width:34px;height:34px;flex:none;border-radius:10px;
  display:inline-flex;align-items:center;justify-content:center;
  background:linear-gradient(140deg, rgba(47,212,200,.28), rgba(107,123,255,.24));
  border:1px solid rgba(47,212,200,.38);
  box-shadow:0 0 18px rgba(47,212,200,.22) inset;
}
.logo-mark svg{width:18px;height:18px;fill:none;stroke:var(--brand);stroke-width:1.7;stroke-linecap:round;stroke-linejoin:round}
.logo-text{font-size:17px;font-weight:700;letter-spacing:.01em;color:var(--text-1)}
.logo:hover .logo-text{color:var(--brand)}
.nav-links{display:flex;align-items:center;gap:26px}
.nav-link{position:relative;font-size:14.5px;color:var(--text-2);padding:6px 2px}
.nav-link:hover{color:var(--text-1)}
.nav-link.active{color:var(--brand)}
.nav-link.active::after{
  content:"";position:absolute;left:50%;bottom:-6px;width:5px;height:5px;border-radius:50%;
  transform:translateX(-50%);background:var(--brand);box-shadow:0 0 10px var(--glow);
}
.nav-right{display:flex;align-items:center;gap:14px}
.nav-cta{padding:10px 20px;font-size:14px;border-radius:10px}
.burger{
  display:none;width:40px;height:40px;border-radius:10px;
  background:rgba(255,255,255,.05);border:1px solid var(--line);
  align-items:center;justify-content:center;cursor:pointer;
}
.burger span{display:block;width:17px;height:1.6px;background:var(--text-1);margin:3px 0;transition:transform .2s ease-out,opacity .2s ease-out}
.burger.open span:nth-child(1){transform:translateY(4.6px) rotate(45deg)}
.burger.open span:nth-child(2){opacity:0}
.burger.open span:nth-child(3){transform:translateY(-4.6px) rotate(-45deg)}
.mobile-drawer{
  position:fixed;top:70px;left:0;right:0;z-index:79;
  background:rgba(8,19,28,.98);
  border-bottom:1px solid var(--line);
  padding:14px 20px 22px;
  display:none;
}
.mobile-drawer.open{display:block}
.mobile-drawer a{
  display:block;padding:12px 4px;font-size:15px;color:var(--text-2);
  border-bottom:1px solid rgba(130,225,235,.1);
}
.mobile-drawer a:last-child{border-bottom:none}
.mobile-drawer a.active{color:var(--brand)}

/* HERO */
.hero{position:relative;padding:150px 0 96px;overflow:hidden}
.hero-bg{position:absolute;inset:0;background-image:url('/assets/images/backpic/back-1.png');background-size:cover;background-position:center right}
.hero-veil{position:absolute;inset:0;background:linear-gradient(112deg, rgba(6,15,22,.94) 0%, rgba(6,15,22,.78) 46%, rgba(6,15,22,.62) 100%)}
.hero-band{position:absolute;left:0;right:0;top:0;height:230px;background:linear-gradient(180deg, rgba(47,212,200,.12), rgba(47,212,200,0));pointer-events:none}
.hero-inner{position:relative;display:grid;grid-template-columns:minmax(0,1.18fr) minmax(0,.82fr);gap:28px;align-items:center}
.hero-card{
  padding:36px 36px 30px;border-radius:24px;
  background:rgba(8,19,28,.6);
}
.hero-card h1{
  font-size:clamp(30px,4.2vw,46px);font-weight:700;line-height:1.25;letter-spacing:-.005em;
}
.hero-sub{font-size:16px;color:var(--text-2);margin-top:16px;max-width:34em}
.hero-actions{display:flex;flex-wrap:wrap;gap:14px;margin-top:28px}
.trust-row{display:flex;flex-wrap:wrap;gap:30px;margin-top:30px;padding-top:24px;border-top:1px solid rgba(130,225,235,.14)}
.trust-row li{display:flex;flex-direction:column;gap:2px}
.trust-row strong{font-size:26px;font-weight:700;color:var(--accent);line-height:1.2;font-variant-numeric:tabular-nums}
.trust-row span{font-size:13px;color:var(--text-2)}
.hero-side{padding:24px;border-radius:22px;background:rgba(10,23,33,.76)}
.hero-side-title{font-size:15px;font-weight:600;color:var(--text-1);margin-bottom:14px}
.side-list li+li{margin-top:8px}
.side-list a{
  display:flex;align-items:center;gap:12px;
  padding:12px 14px;border-radius:12px;
  background:rgba(255,255,255,.03);border:1px solid rgba(130,225,235,.12);
  font-size:14px;color:var(--text-1);
}
.side-list a:hover{background:rgba(47,212,200,.09);border-color:rgba(47,212,200,.36);color:var(--brand)}
.side-icon{
  width:30px;height:30px;flex:none;border-radius:9px;
  display:inline-flex;align-items:center;justify-content:center;
  background:rgba(47,212,200,.12);border:1px solid rgba(47,212,200,.26);
}
.side-icon svg{width:15px;height:15px;fill:none;stroke:var(--brand);stroke-width:1.7;stroke-linecap:round;stroke-linejoin:round}
.side-arrow{margin-left:auto;color:var(--text-2);font-size:14px}

/* 板块 */
.section{padding:88px 0}
.section-alt{padding:76px 0;border-top:1px solid rgba(130,225,235,.12);border-bottom:1px solid rgba(130,225,235,.12)}
.section-head{display:flex;align-items:flex-end;justify-content:space-between;gap:24px;margin-bottom:38px}
.section-title{font-size:clamp(22px,2.8vw,32px);font-weight:700;line-height:1.35}
.section-desc{margin-top:12px;font-size:15px;color:var(--text-2);max-width:38em}
.more-link{font-size:14px;color:var(--text-2);white-space:nowrap}
.more-link:hover{color:var(--brand)}

/* 三步上手 */
.steps{display:grid;grid-template-columns:repeat(3,minmax(0,1fr));gap:0;position:relative}
.step{position:relative;padding:0 28px}
.step+.step{border-left:1px dashed rgba(130,225,235,.24)}
.step-num{
  display:inline-flex;align-items:center;justify-content:center;
  width:44px;height:44px;border-radius:999px;
  font-size:15px;font-weight:700;color:var(--accent);
  background:rgba(255,180,92,.09);border:1px solid rgba(255,180,92,.34);
  margin-bottom:18px;font-variant-numeric:tabular-nums;
}
.step h3{font-size:18px;font-weight:600;margin-bottom:10px}
.step p{font-size:14.5px;color:var(--text-2);line-height:1.8}

/* 功能横条 */
.feature-rows{display:grid;grid-template-columns:repeat(3,minmax(0,1fr));gap:20px 24px}
.feature-row{
  display:flex;gap:14px;align-items:flex-start;
  padding:18px 20px;border-radius:14px;
  background:rgba(255,255,255,.03);border:1px solid rgba(130,225,235,.12);
  transition:background .2s ease-out,border-color .2s ease-out
}
.feature-row:hover{background:rgba(47,212,200,.07);border-color:rgba(47,212,200,.34)}
.feature-row .side-icon{margin-top:2px}
.feature-row h3{font-size:15.5px;font-weight:600;margin-bottom:4px}
.feature-row p{font-size:13.5px;color:var(--text-2);line-height:1.7}

/* 案例证明 */
.case-layout{display:grid;grid-template-columns:minmax(0,1.3fr) minmax(0,1fr);gap:22px;align-items:stretch}
.case-main{overflow:hidden;border-radius:var(--r-card);padding:0}
.case-main .case-img{aspect-ratio:16/9;overflow:hidden}
.case-main .case-img img{width:100%;height:100%;object-fit:cover;transition:transform .2s ease-out}
.case-main:hover .case-img img{transform:scale(1.03)}
.case-main-body{padding:24px 26px 26px}
.case-main-body h3{font-size:20px;font-weight:600;line-height:1.5;margin-bottom:10px}
.case-main-body p{font-size:14.5px;color:var(--text-2)}
.case-stats{display:flex;flex-wrap:wrap;gap:26px;margin-top:20px;padding-top:18px;border-top:1px solid rgba(130,225,235,.14)}
.case-stats div{display:flex;flex-direction:column;gap:2px}
.case-stats strong{font-size:24px;font-weight:700;color:var(--accent);line-height:1.2;font-variant-numeric:tabular-nums}
.case-stats span{font-size:12.5px;color:var(--text-2)}
.case-side{display:flex;flex-direction:column;gap:22px}
.case-mini{display:flex;gap:16px;padding:16px;align-items:center;border-radius:var(--r-card);flex:1}
.case-mini .mini-img{width:120px;flex:none;aspect-ratio:16/10;border-radius:var(--r-img);overflow:hidden}
.case-mini .mini-img img{width:100%;height:100%;object-fit:cover;transition:transform .2s ease-out}
.case-mini:hover .mini-img img{transform:scale(1.03)}
.case-mini h3{font-size:16px;font-weight:600;margin-bottom:6px}
.case-mini p{font-size:13.5px;color:var(--text-2);display:-webkit-box;-webkit-line-clamp:2;-webkit-box-orient:vertical;overflow:hidden}

/* 数据带 */
.stat-band{
  display:grid;grid-template-columns:repeat(4,minmax(0,1fr));gap:18px;
  padding:28px;border-radius:var(--r-card);
  background-image:linear-gradient(120deg, rgba(47,212,200,.08), rgba(107,123,255,.08));
  border:1px solid var(--line);
}
.stat-band div{text-align:center}
.stat-band strong{display:block;font-size:clamp(24px,3vw,30px);font-weight:700;color:var(--brand);line-height:1.25;font-variant-numeric:tabular-nums}
.stat-band span{display:block;margin-top:6px;font-size:13px;color:var(--text-2)}

/* 最新信息 */
.news-grid{display:grid;grid-template-columns:repeat(2,minmax(0,1fr));gap:22px}
.news-item{display:grid;grid-template-columns:150px minmax(0,1fr);gap:18px;align-items:center;padding:16px;border-radius:var(--r-card)}
.news-thumb{aspect-ratio:16/10;border-radius:var(--r-img);overflow:hidden;background:rgba(255,255,255,.04)}
.news-thumb img{width:100%;height:100%;object-fit:cover;transition:transform .2s ease-out}
.news-item:hover .news-thumb img{transform:scale(1.03)}
.news-meta{display:flex;align-items:center;gap:10px;margin-bottom:8px;font-size:12.5px;color:var(--text-2)}
.news-title{font-size:17px;font-weight:600;line-height:1.5;margin-bottom:6px;display:-webkit-box;-webkit-line-clamp:2;-webkit-box-orient:vertical;overflow:hidden}
.news-sum{font-size:14px;color:var(--text-2);display:-webkit-box;-webkit-line-clamp:2;-webkit-box-orient:vertical;overflow:hidden}
.empty-state{display:flex;flex-direction:column;align-items:center;justify-content:center;gap:10px;padding:52px 24px;text-align:center;border-radius:var(--r-card)}
.empty-icon{width:46px;height:46px;border-radius:14px;display:flex;align-items:center;justify-content:center;border:1px solid rgba(130,225,235,.22);background:rgba(255,255,255,.03)}
.empty-icon svg{width:22px;height:22px;fill:none;stroke:var(--text-2);stroke-width:1.6;stroke-linecap:round;stroke-linejoin:round}
.empty-main{font-size:15px;color:var(--text-1)}
.empty-sub{font-size:13px;color:var(--text-2)}

/* FAQ */
.faq-list{display:flex;flex-direction:column;gap:14px;max-width:900px}
.faq-item{overflow:hidden;border-radius:var(--r-card)}
.faq-q{
  width:100%;display:flex;align-items:center;justify-content:space-between;gap:18px;
  padding:20px 24px;background:transparent;border:none;cursor:pointer;text-align:left;
  font-size:16px;font-weight:600;color:var(--text-1);
}
.faq-q:hover{color:var(--brand)}
.faq-icon{position:relative;width:16px;height:16px;flex:none}
.faq-icon::before,.faq-icon::after{
  content:"";position:absolute;left:50%;top:50%;background:var(--brand);border-radius:2px;
  transform:translate(-50%,-50%);transition:opacity .2s ease-out,transform .2s ease-out;
}
.faq-icon::before{width:14px;height:1.6px}
.faq-icon::after{width:1.6px;height:14px}
.faq-item.open .faq-icon::after{opacity:0;transform:translate(-50%,-50%) scaleY(0)}
.faq-a{max-height:0;overflow:hidden;transition:max-height .3s ease-out;padding:0 24px}
.faq-a p{font-size:15px;line-height:1.8;color:var(--text-2);padding-bottom:22px;max-width:40em}
.faq-item.open .faq-a{max-height:280px}

/* CTA 表单 */
.cta-panel{
  display:grid;grid-template-columns:minmax(0,1.05fr) minmax(0,.95fr);gap:40px;
  padding:40px;border-radius:26px;
  background:rgba(8,19,28,.72);
  border:1px solid rgba(47,212,200,.26);
  box-shadow:0 24px 60px rgba(0,0,0,.5), 0 0 40px rgba(47,212,200,.12);
}
.cta-panel h2{font-size:clamp(22px,2.6vw,30px);font-weight:700;line-height:1.35}
.cta-panel > .cta-copy > p{margin-top:14px;font-size:15px;color:var(--text-2);max-width:36em}
.cta-points{margin-top:22px;display:flex;flex-direction:column;gap:10px}
.cta-points li{position:relative;padding-left:20px;font-size:14.5px;color:var(--text-2)}
.cta-points li::before{
  content:"";position:absolute;left:0;top:11px;width:6px;height:6px;border-radius:50%;
  background:var(--brand);box-shadow:0 0 8px var(--glow);
}
.cta-form{display:flex;flex-direction:column;gap:14px}
.field{display:flex;flex-direction:column;gap:7px}
.field-label{font-size:13px;color:var(--text-2)}
.field input{
  width:100%;padding:13px 15px;border-radius:12px;
  background:rgba(255,255,255,.04);
  border:1px solid rgba(130,225,235,.18);
  color:var(--text-1);font-size:14.5px;line-height:1.5;
  transition:border-color .2s ease-out,background .2s ease-out;
}
.field input::placeholder{color:rgba(232,244,248,.38)}
.field input:focus{outline:none;border-color:rgba(47,212,200,.6);background:rgba(47,212,200,.07)}
.field input:focus-visible{outline:2px solid var(--brand);outline-offset:2px}
.form-note{font-size:12.5px;color:var(--text-2);line-height:1.7}

/* 页脚 */
.site-footer{border-top:1px solid var(--line);background:rgba(6,15,22,.86);margin-top:20px}
.footer-grid{display:grid;grid-template-columns:1.5fr 1fr 1fr 1.1fr;gap:36px;padding-top:64px;padding-bottom:44px}
.footer-brand p{margin-top:16px;font-size:13.5px;color:var(--text-2);line-height:1.85;max-width:30em}
.footer-col h3{font-size:14px;font-weight:600;color:var(--text-1);margin-bottom:16px}
.footer-col li+li{margin-top:10px}
.footer-col a,.footer-col span{font-size:13.5px;color:var(--text-2)}
.footer-col a:hover{color:var(--brand)}
.footer-bottom{
  display:flex;flex-wrap:wrap;align-items:center;justify-content:space-between;gap:12px;
  padding-top:20px;padding-bottom:26px;border-top:1px solid rgba(130,225,235,.12);
  font-size:12.5px;color:rgba(232,244,248,.5);
}

/* 移动底部 Tab */
.tabbar{
  position:fixed;left:0;right:0;bottom:0;z-index:85;
  display:none;align-items:stretch;justify-content:space-around;
  background:rgba(8,19,28,.96);
  backdrop-filter:blur(14px);-webkit-backdrop-filter:blur(14px);
  border-top:1px solid var(--line);
  padding:8px 6px calc(8px + env(safe-area-inset-bottom));
}
.tab-item{
  flex:1;display:flex;flex-direction:column;align-items:center;gap:4px;
  padding:4px 2px;border-radius:12px;color:var(--text-2);
  transition:color .2s ease-out,transform .2s ease-out;
}
.tab-item svg{width:20px;height:20px;fill:none;stroke:currentColor;stroke-width:1.7;stroke-linecap:round;stroke-linejoin:round}
.tab-item span{font-size:10.5px;line-height:1.2}
.tab-item.active{color:var(--brand);transform:translateY(-2px)}
.tab-item.active svg{filter:drop-shadow(0 0 8px rgba(47,212,200,.5))}

@media (max-width:1024px){
  .nav-links{display:none}
  .nav-cta{display:none}
  .burger{display:inline-flex}
  .tabbar{display:flex}
  body{padding-bottom:76px}
  .hero{padding:120px 0 72px}
  .hero-inner{grid-template-columns:minmax(0,1fr)}
  .hero-side{order:2}
  .case-layout{grid-template-columns:minmax(0,1fr)}
  .cta-panel{grid-template-columns:minmax(0,1fr);gap:28px;padding:30px}
}
@media (max-width:900px){
  .steps{grid-template-columns:minmax(0,1fr);gap:26px}
  .step{padding:0 0 0 34px}
  .step+.step{border-left:none}
  .step::before{
    content:"";position:absolute;left:12px;top:52px;bottom:-22px;width:1px;
    background:repeating-linear-gradient(180deg, rgba(130,225,235,.34) 0 6px, transparent 6px 12px);
  }
  .step:last-child::before{display:none}
  .step-num{position:absolute;left:0;top:2px;width:26px;height:26px;font-size:12px;margin:0}
  .feature-rows{grid-template-columns:repeat(2,minmax(0,1fr))}
  .news-grid{grid-template-columns:minmax(0,1fr)}
  .stat-band{grid-template-columns:repeat(2,minmax(0,1fr));gap:24px}
  .footer-grid{grid-template-columns:repeat(2,minmax(0,1fr));gap:30px;padding-top:48px}
}
@media (max-width:640px){
  .container-x{padding:0 18px}
  .nav-wrap{padding:0 18px}
  .section{padding:52px 0}
  .section-alt{padding:50px 0}
  .section-head{flex-direction:column;align-items:flex-start;gap:12px;margin-bottom:28px}
  .hero{padding:106px 0 58px}
  .hero-card{padding:24px 20px 22px;border-radius:20px}
  .hero-sub{font-size:15px}
  .hero-actions{gap:10px}
  .hero-actions .btn{flex:1 1 100%}
  .trust-row{gap:20px;margin-top:24px}
  .trust-row strong{font-size:22px}
  .hero-side{padding:18px}
  .feature-rows{grid-template-columns:minmax(0,1fr)}
  .news-item{grid-template-columns:106px minmax(0,1fr);gap:14px;padding:12px}
  .news-title{font-size:15.5px}
  .news-sum{display:none}
  .case-mini .mini-img{width:96px}
  .cta-panel{padding:22px 18px;border-radius:20px}
  .faq-q{padding:17px 18px;font-size:15px}
  .faq-a{padding:0 18px}
  .footer-grid{grid-template-columns:minmax(0,1fr);padding-top:40px;padding-bottom:32px;gap:26px}
  .footer-bottom{padding-bottom:32px}
}

/* roulang page: article */
:root{
  --bg:#060f16;
  --bg-2:#08131c;
  --panel:rgba(255,255,255,.045);
  --panel-strong:rgba(255,255,255,.07);
  --line:rgba(130,225,235,.16);
  --line-strong:rgba(130,225,235,.32);
  --brand:#2fd4c8;
  --brand-2:#6b7bff;
  --accent:#ffb45c;
  --text-1:#e8f4f8;
  --text-2:rgba(232,244,248,.68);
  --text-3:rgba(232,244,248,.45);
  --glow:0 0 24px rgba(47,212,200,.35);
  --shadow-card:0 24px 48px rgba(0,0,0,.45), 0 0 0 1px rgba(255,255,255,.06) inset;
  --radius-card:18px;
  --radius-btn:12px;
  --radius-img:14px;
}
*,*::before,*::after{box-sizing:border-box;}
html{-webkit-text-size-adjust:100%;scroll-behavior:smooth;}
body{
  margin:0;
  padding-top:70px;
  padding-bottom:calc(76px + env(safe-area-inset-bottom));
  background-color:var(--bg);
  background-image:
    radial-gradient(680px 420px at 8% -6%, rgba(47,212,200,.11), transparent 70%),
    radial-gradient(720px 460px at 96% 8%, rgba(107,123,255,.11), transparent 72%),
    linear-gradient(rgba(130,225,235,.045) 1px, transparent 1px),
    linear-gradient(90deg, rgba(130,225,235,.045) 1px, transparent 1px);
  background-size:auto, auto, 56px 56px, 56px 56px;
  background-repeat:no-repeat,no-repeat,repeat,repeat;
  background-attachment:fixed, fixed, scroll, scroll;
  color:var(--text-1);
  font-family:-apple-system,"PingFang SC","Microsoft YaHei","Noto Sans SC",sans-serif;
  font-size:16px;
  line-height:1.8;
  letter-spacing:0;
}
h1,h2,h3,h4{margin:0;color:var(--text-1);letter-spacing:0;}
p{margin:0;}
img{max-width:100%;display:block;}
a{color:inherit;text-decoration:none;transition:color .2s ease-out;}
a:hover{color:var(--brand);}
ul,ol{margin:0;}
button{font-family:inherit;color:inherit;background:none;border:0;cursor:pointer;}
:focus-visible{outline:2px solid var(--brand);outline-offset:2px;border-radius:6px;}
.container-x{max-width:1200px;margin:0 auto;padding:0 32px;width:100%;}
.glass{
  background:var(--panel);
  border:1px solid var(--line);
  border-radius:var(--radius-card);
  box-shadow:var(--shadow-card);
  backdrop-filter:blur(10px);
  -webkit-backdrop-filter:blur(10px);
}
.card-hover{transition:transform .2s ease-out, border-color .2s ease-out, box-shadow .2s ease-out;}
.card-hover:hover{transform:translateY(-4px);border-color:var(--line-strong);box-shadow:0 28px 52px rgba(0,0,0,.5), 0 0 0 1px rgba(255,255,255,.08) inset, 0 0 22px rgba(47,212,200,.14);}
.chip{
  display:inline-flex;align-items:center;gap:6px;
  font-size:12px;line-height:1;padding:6px 11px;border-radius:999px;
  background:var(--panel-strong);border:1px solid var(--line);color:var(--text-2);white-space:nowrap;
}
.chip-accent{border-color:rgba(255,180,92,.4);color:var(--accent);}
.chip-brand{border-color:rgba(47,212,200,.38);color:var(--brand);}
.btn{
  display:inline-flex;align-items:center;justify-content:center;gap:8px;
  border-radius:var(--radius-btn);font-size:15px;font-weight:600;
  padding:12px 22px;border:1px solid transparent;cursor:pointer;
  transition:all .2s ease-out;
}
.btn-primary{background:var(--brand);color:#04211f;box-shadow:var(--glow);}
.btn-primary:hover{filter:brightness(1.08);box-shadow:0 0 34px rgba(47,212,200,.5);color:#04211f;}
.btn-primary:active{transform:scale(.98);}
.btn-ghost{background:transparent;border-color:var(--line-strong);color:var(--text-1);}
.btn-ghost:hover{background:rgba(47,212,200,.1);color:var(--brand);}
.btn[disabled]{opacity:.45;box-shadow:none;cursor:not-allowed;}
.section{padding:80px 0;}
.section-tight{padding:56px 0;}
.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:clamp(22px,2.8vw,32px);font-weight:700;line-height:1.35;}
.section-head p{color:var(--text-2);font-size:14px;margin-top:8px;}

/* ---------- header ---------- */
.site-header{
  position:fixed;top:0;left:0;right:0;z-index:60;
  height:70px;
  background:rgba(6,15,22,.72);
  backdrop-filter:blur(14px);
  -webkit-backdrop-filter:blur(14px);
  border-bottom:1px solid var(--line);
  transition:background .25s ease-out, box-shadow .25s ease-out;
}
.site-header.scrolled{background:rgba(6,15,22,.92);box-shadow:0 12px 32px rgba(0,0,0,.45);}
.nav-wrap{
  max-width:1200px;margin:0 auto;padding:0 32px;height:100%;
  display:flex;align-items:center;justify-content:space-between;gap:20px;
}
.logo{display:inline-flex;align-items:center;gap:10px;}
.logo-mark{
  width:34px;height:34px;border-radius:10px;display:grid;place-items:center;
  background:linear-gradient(140deg, rgba(47,212,200,.9), rgba(107,123,255,.75));
  box-shadow:0 0 18px rgba(47,212,200,.3);
  flex:none;
}
.logo-mark svg{width:20px;height:20px;fill:none;stroke:#04211f;stroke-width:1.8;stroke-linecap:round;stroke-linejoin:round;}
.logo-text{font-size:17px;font-weight:700;color:var(--text-1);letter-spacing:0;}
.nav-links{display:flex;align-items:center;gap:6px;}
.nav-link{
  position:relative;padding:8px 14px;border-radius:10px;font-size:14.5px;color:var(--text-2);
  transition:color .2s ease-out, background .2s ease-out;
}
.nav-link:hover{color:var(--text-1);background:rgba(255,255,255,.05);}
.nav-link.active{color:var(--brand);background:rgba(47,212,200,.1);}
.nav-link.active::after{
  content:"";position:absolute;left:14px;right:14px;bottom:2px;height:2px;border-radius:2px;
  background:var(--brand);box-shadow:0 0 10px rgba(47,212,200,.7);
}
.nav-right{display:flex;align-items:center;gap:12px;}
.nav-cta{padding:10px 18px;font-size:14px;}
.burger{display:none;flex-direction:column;gap:5px;padding:8px;border-radius:10px;border:1px solid var(--line);}
.burger span{display:block;width:20px;height:2px;background:var(--text-1);border-radius:2px;transition:transform .2s ease-out, opacity .2s ease-out;}
.burger[aria-expanded="true"] span:nth-child(1){transform:translateY(7px) rotate(45deg);}
.burger[aria-expanded="true"] span:nth-child(2){opacity:0;}
.burger[aria-expanded="true"] span:nth-child(3){transform:translateY(-7px) rotate(-45deg);}

/* ---------- breadcrumb ---------- */
.crumbs{display:flex;align-items:center;gap:8px;font-size:13px;color:var(--text-3);flex-wrap:wrap;}
.crumbs a{color:var(--text-3);}
.crumbs a:hover{color:var(--brand);text-decoration:underline;text-underline-offset:3px;}
.crumbs .sep{color:rgba(232,244,248,.28);}
.crumbs .now{color:var(--text-2);max-width:340px;overflow:hidden;text-overflow:ellipsis;white-space:nowrap;}

/* ---------- article head ---------- */
.article-hero{padding:48px 0 8px;position:relative;}
.article-hero::before{
  content:"";position:absolute;inset:auto 0 0 0;height:1px;
  background:linear-gradient(90deg, transparent, rgba(130,225,235,.28), transparent);
}
.article-title{
  font-size:clamp(26px,3.4vw,40px);font-weight:700;line-height:1.3;
  margin:18px 0 18px;max-width:900px;
}
.article-meta{display:flex;align-items:center;gap:12px;flex-wrap:wrap;padding-bottom:32px;}

/* ---------- layout ---------- */
.article-layout{
  display:grid;grid-template-columns:minmax(0,1fr) 300px;gap:48px;align-items:start;
  padding:48px 0 8px;
}
.article-main{min-width:0;}
.article-body{max-width:760px;font-size:16px;line-height:1.85;color:var(--text-2);}
.article-body > *:first-child{margin-top:0;}
.article-body p{margin:0 0 20px;}
.article-body p:first-of-type::first-letter{
  font-size:1.05em;font-weight:700;color:var(--text-1);
}
.article-body h2{
  font-size:clamp(20px,2.2vw,26px);font-weight:700;color:var(--text-1);
  line-height:1.4;margin:64px 0 18px;padding-left:14px;border-left:3px solid var(--brand);
}
.article-body h3{font-size:19px;font-weight:600;color:var(--text-1);margin:36px 0 12px;line-height:1.5;}
.article-body h4{font-size:16px;font-weight:600;color:var(--text-1);margin:26px 0 10px;}
.article-body ul,.article-body ol{margin:0 0 22px;padding-left:22px;}
.article-body li{margin-bottom:10px;}
.article-body ul li::marker{color:var(--brand);}
.article-body ol li::marker{color:var(--brand);font-weight:600;}
.article-body strong{color:var(--text-1);font-weight:600;}
.article-body blockquote{
  margin:24px 0;padding:18px 22px;border-left:3px solid var(--brand);
  background:var(--panel);border-radius:0 var(--radius-img) var(--radius-img) 0;color:var(--text-2);
}
.article-body blockquote p:last-child{margin-bottom:0;}
.article-body a{color:var(--brand);text-decoration:underline;text-underline-offset:3px;text-decoration-thickness:1px;}
.article-body img{
  width:100%;border-radius:var(--radius-img);border:1px solid var(--line);
  margin:26px 0 8px;object-fit:cover;
}
.article-body figure{margin:26px 0;}
.article-body figcaption{font-size:13px;color:var(--text-3);text-align:center;margin-top:8px;}
.article-body table{
  width:100%;border-collapse:collapse;margin:26px 0;font-size:14.5px;
  border:1px solid var(--line);border-radius:var(--radius-img);overflow:hidden;
}
.article-body th{background:rgba(47,212,200,.12);color:var(--text-1);font-weight:600;text-align:left;padding:12px 14px;border-bottom:1px solid var(--line);}
.article-body td{padding:12px 14px;border-bottom:1px solid rgba(130,225,235,.1);color:var(--text-2);}
.article-body tr:last-child td{border-bottom:0;}
.article-body hr{border:0;height:1px;background:linear-gradient(90deg,transparent,rgba(130,225,235,.28),transparent);margin:40px 0;}
.article-body pre{
  background:rgba(0,0,0,.32);border:1px solid var(--line);border-radius:var(--radius-img);
  padding:16px;overflow:auto;font-size:13.5px;margin:24px 0;
}
.article-body code{background:rgba(47,212,200,.1);border-radius:6px;padding:2px 6px;font-size:13.5px;color:var(--brand);}

.empty-state{
  max-width:760px;padding:56px 28px;text-align:center;
}
.empty-state .ico{
  width:52px;height:52px;margin:0 auto 18px;border-radius:14px;display:grid;place-items:center;
  border:1px dashed var(--line-strong);color:var(--brand);
}
.empty-state .ico svg{width:24px;height:24px;fill:none;stroke:currentColor;stroke-width:1.6;stroke-linecap:round;stroke-linejoin:round;}
.empty-state h2{font-size:20px;font-weight:700;margin-bottom:10px;}
.empty-state p{color:var(--text-2);font-size:14.5px;margin-bottom:22px;}

/* ---------- sidebar ---------- */
.side-col{display:flex;flex-direction:column;gap:20px;position:sticky;top:96px;}
.side-card{padding:22px;}
.side-card h3{font-size:15px;font-weight:700;margin-bottom:14px;color:var(--text-1);}
.side-list{list-style:none;padding:0;display:flex;flex-direction:column;gap:10px;}
.side-list a{
  display:flex;align-items:center;justify-content:space-between;gap:10px;
  font-size:14px;color:var(--text-2);padding:9px 12px;border-radius:10px;
  border:1px solid transparent;transition:all .2s ease-out;
}
.side-list a:hover{color:var(--brand);background:rgba(47,212,200,.08);border-color:var(--line);text-decoration:none;}
.side-list a span.arrow{color:var(--brand);font-size:13px;}
.side-note{font-size:13px;color:var(--text-3);line-height:1.75;}

/* ---------- related ---------- */
.rel-grid{display:grid;grid-template-columns:repeat(3,minmax(0,1fr));gap:24px;}
.rel-card{overflow:hidden;display:flex;flex-direction:column;}
.rel-thumb{
  aspect-ratio:16/10;overflow:hidden;border-bottom:1px solid var(--line);
}
.rel-thumb img{width:100%;height:100%;object-fit:cover;transition:transform .25s ease-out;}
.rel-card:hover .rel-thumb img{transform:scale(1.03);}
.rel-body{padding:18px 20px 20px;display:flex;flex-direction:column;gap:10px;flex:1;}
.rel-body h3{font-size:16px;font-weight:600;line-height:1.5;
  display:-webkit-box;-webkit-line-clamp:2;-webkit-box-orient:vertical;overflow:hidden;}
.rel-body p{font-size:14px;color:var(--text-2);
  display:-webkit-box;-webkit-line-clamp:2;-webkit-box-orient:vertical;overflow:hidden;}
.rel-foot{margin-top:auto;display:flex;align-items:center;justify-content:space-between;font-size:12.5px;color:var(--text-3);}

/* ---------- faq ---------- */
.faq-list{display:flex;flex-direction:column;gap:14px;}
.faq-item{border-radius:var(--radius-card);overflow:hidden;}
.faq-q{
  width:100%;display:flex;align-items:center;justify-content:space-between;gap:16px;
  padding:20px 24px;font-size:16px;font-weight:600;text-align:left;color:var(--text-1);
}
.faq-q .idx{color:var(--accent);font-size:13px;font-weight:700;margin-right:10px;}
.faq-q .sign{
  flex:none;width:24px;height:24px;border-radius:8px;display:grid;place-items:center;
  border:1px solid var(--line-strong);color:var(--brand);font-size:15px;line-height:1;
  transition:transform .2s ease-out, background .2s ease-out;
}
.faq-item.open .faq-q .sign{background:rgba(47,212,200,.14);transform:rotate(45deg);}
.faq-a{max-height:0;overflow:hidden;transition:max-height .3s ease-out;}
.faq-a p{padding:0 24px 22px;color:var(--text-2);font-size:15px;line-height:1.8;}

/* ---------- cta ---------- */
.cta-band{
  position:relative;overflow:hidden;padding:44px;
  display:grid;grid-template-columns:1.1fr .9fr;gap:40px;align-items:center;
}
.cta-band::after{
  content:"";position:absolute;inset:-40% -10% auto auto;width:420px;height:420px;border-radius:50%;
  background:radial-gradient(circle, rgba(47,212,200,.16), transparent 65%);pointer-events:none;
}
.cta-band h2{font-size:clamp(22px,2.6vw,30px);font-weight:700;line-height:1.4;margin-bottom:12px;}
.cta-band p{color:var(--text-2);font-size:15px;max-width:460px;}
.cta-form{display:flex;flex-direction:column;gap:12px;position:relative;z-index:1;}
.cta-form input{
  width:100%;padding:13px 16px;border-radius:12px;font-size:14.5px;
  background:rgba(0,0,0,.28);border:1px solid var(--line);color:var(--text-1);
  transition:border-color .2s ease-out, box-shadow .2s ease-out;
}
.cta-form input::placeholder{color:var(--text-3);}
.cta-form input:focus{outline:none;border-color:var(--brand);box-shadow:0 0 0 3px rgba(47,212,200,.14);}
.cta-contact{font-size:13px;color:var(--text-3);margin-top:4px;}

/* ---------- footer ---------- */
.site-footer{margin-top:80px;border-top:1px solid var(--line);background:rgba(4,10,15,.6);padding:56px 0 0;}
.footer-grid{display:grid;grid-template-columns:1.6fr 1fr 1fr 1.2fr;gap:36px;padding-bottom:40px;}
.footer-brand p{margin-top:14px;font-size:14px;color:var(--text-2);max-width:320px;line-height:1.8;}
.footer-col h3{font-size:14px;font-weight:700;margin-bottom:16px;color:var(--text-1);}
.footer-col ul{list-style:none;padding:0;display:flex;flex-direction:column;gap:10px;}
.footer-col li{font-size:14px;color:var(--text-2);}
.footer-col a{color:var(--text-2);}
.footer-col a:hover{color:var(--brand);text-decoration:underline;text-underline-offset:3px;}
.footer-bottom{
  border-top:1px solid rgba(130,225,235,.1);padding-top:20px;padding-bottom:24px;
  display:flex;align-items:center;justify-content:space-between;gap:16px;flex-wrap:wrap;
  font-size:13px;color:var(--text-3);
}

/* ---------- mobile tab ---------- */
.mobile-tab{
  display:none;position:fixed;left:0;right:0;bottom:0;z-index:70;
  background:rgba(6,15,22,.95);
  backdrop-filter:blur(14px);-webkit-backdrop-filter:blur(14px);
  border-top:1px solid var(--line);
  padding:8px 6px calc(8px + env(safe-area-inset-bottom));
  grid-template-columns:repeat(4,1fr);
}
.tab-item{
  display:flex;flex-direction:column;align-items:center;gap:4px;
  font-size:10.5px;color:var(--text-3);padding:6px 2px;border-radius:10px;
  transition:color .2s ease-out, transform .2s ease-out;
}
.tab-item svg{width:20px;height:20px;fill:none;stroke:currentColor;stroke-width:1.7;stroke-linecap:round;stroke-linejoin:round;}
.tab-item.active{color:var(--brand);transform:translateY(-2px);filter:drop-shadow(0 0 8px rgba(47,212,200,.55));}

@media (max-width:1024px){
  .article-layout{grid-template-columns:minmax(0,1fr);gap:36px;}
  .side-col{position:static;}
  .rel-grid{grid-template-columns:repeat(2,minmax(0,1fr));}
  .cta-band{grid-template-columns:1fr;padding:36px;}
  .footer-grid{grid-template-columns:1fr 1fr;gap:28px;}
}
@media (max-width:768px){
  .container-x{padding:0 20px;}
  .nav-wrap{padding:0 20px;}
  .nav-links{
    position:absolute;top:70px;left:0;right:0;
    flex-direction:column;align-items:stretch;gap:4px;
    background:rgba(6,15,22,.97);border-bottom:1px solid var(--line);
    padding:14px 20px 18px;display:none;
  }
  .nav-links.open{display:flex;}
  .nav-link{padding:12px 14px;font-size:15px;}
  .nav-link.active::after{display:none;}
  .nav-cta{display:none;}
  .burger{display:flex;}
  .mobile-tab{display:grid;}
  .section{padding:56px 0;}
  .section-tight{padding:44px 0;}
  .article-hero{padding:32px 0 6px;}
  .article-layout{padding:32px 0 0;}
  .article-body h2{margin-top:44px;}
  .rel-grid{grid-template-columns:1fr;}
  .footer-grid{grid-template-columns:1fr;}
  .footer-bottom{flex-direction:column;align-items:flex-start;}
}
@media (max-width:520px){
  .container-x{padding:0 16px;}
  .nav-wrap{padding:0 16px;}
  .article-title{font-size:24px;}
  .cta-band{padding:26px 20px;}
  .faq-q{padding:16px 18px;font-size:15px;}
  .faq-a p{padding:0 18px 18px;}
}

/* roulang page: category1 */
:root{
    --bg:#060f16;
    --bg-2:#08131c;
    --panel:rgba(255,255,255,.045);
    --panel-2:rgba(255,255,255,.075);
    --line:rgba(130,225,235,.16);
    --line-strong:rgba(130,225,235,.3);
    --brand:#2fd4c8;
    --brand-2:#6b7bff;
    --accent:#ffb45c;
    --text-1:#e8f4f8;
    --text-2:rgba(232,244,248,.68);
    --text-3:rgba(232,244,248,.45);
    --glow:0 0 24px rgba(47,212,200,.35);
    --radius:18px;
    --radius-sm:12px;
    --shadow:0 24px 48px rgba(0,0,0,.45), inset 0 0 0 1px rgba(255,255,255,.06);
  }
  *,*::before,*::after{box-sizing:border-box;}
  html{-webkit-text-size-adjust:100%;scroll-behavior:smooth;}
  body{
    margin:0;
    padding-top:68px;
    padding-bottom:0;
    font-family:-apple-system,"PingFang SC","Microsoft YaHei","Noto Sans SC",sans-serif;
    font-size:15.5px;
    line-height:1.8;
    color:var(--text-1);
    background-color:var(--bg);
    background-image:
      radial-gradient(900px 520px at 8% -6%, rgba(47,212,200,.10), transparent 62%),
      radial-gradient(820px 520px at 100% 12%, rgba(107,123,255,.10), transparent 60%),
      linear-gradient(rgba(130,225,235,.035) 1px, transparent 1px),
      linear-gradient(90deg, rgba(130,225,235,.035) 1px, transparent 1px);
    background-size:auto,auto,48px 48px,48px 48px;
    background-attachment:fixed;
    overflow-x:hidden;
  }
  img{max-width:100%;display:block;}
  a{color:inherit;text-decoration:none;}
  a:hover{color:var(--brand);}
  button{font:inherit;color:inherit;background:none;border:none;cursor:pointer;}
  h1,h2,h3,h4{margin:0;font-weight:700;letter-spacing:0;}
  p{margin:0;}
  ul{margin:0;padding:0;list-style:none;}
  :focus-visible{outline:2px solid var(--brand);outline-offset:2px;border-radius:6px;}

  .container-x{width:100%;max-width:1200px;margin:0 auto;padding:0 32px;}
  .section{padding:88px 0;}
  .section-tight{padding:64px 0;}
  .divider{height:1px;background:linear-gradient(90deg,transparent,rgba(130,225,235,.22),transparent);}

  /* ---------- header ---------- */
  .site-header{
    position:fixed;top:0;left:0;right:0;z-index:60;height:68px;
    background:rgba(6,15,22,.72);
    -webkit-backdrop-filter:blur(14px);backdrop-filter:blur(14px);
    border-bottom:1px solid var(--line);
    transition:background .25s ease,box-shadow .25s ease;
  }
  .site-header.scrolled{background:rgba(6,15,22,.92);box-shadow:0 10px 30px rgba(0,0,0,.42);}
  .nav-wrap{
    width:100%;max-width:1200px;height:68px;margin:0 auto;padding:0 32px;
    display:flex;align-items:center;justify-content:space-between;gap:20px;
  }
  .logo{display:flex;align-items:center;gap:10px;flex-shrink:0;}
  .logo-mark{
    width:34px;height:34px;border-radius:11px;display:grid;place-items:center;
    background:linear-gradient(140deg,rgba(47,212,200,.24),rgba(107,123,255,.18));
    border:1px solid var(--line-strong);
    box-shadow:0 0 18px rgba(47,212,200,.22);
  }
  .logo-mark svg{width:19px;height:19px;fill:none;stroke:var(--brand);stroke-width:1.7;stroke-linecap:round;stroke-linejoin:round;}
  .logo-text{font-size:17px;font-weight:700;color:var(--text-1);white-space:nowrap;}
  .nav-links{display:flex;align-items:center;gap:4px;}
  .nav-link{
    position:relative;padding:9px 14px;border-radius:10px;font-size:14.5px;color:var(--text-2);
    transition:background .2s ease,color .2s ease;
  }
  .nav-link:hover{background:rgba(47,212,200,.10);color:var(--text-1);}
  .nav-link.active{color:var(--brand);}
  .nav-link.active::after{
    content:"";position:absolute;left:50%;bottom:2px;transform:translateX(-50%);
    width:5px;height:5px;border-radius:50%;background:var(--brand);box-shadow:var(--glow);
  }
  .nav-right{display:flex;align-items:center;gap:12px;}
  .btn{
    display:inline-flex;align-items:center;justify-content:center;gap:8px;
    border-radius:var(--radius-sm);font-size:14.5px;font-weight:600;
    padding:11px 22px;transition:all .2s ease-out;white-space:nowrap;
  }
  .btn-primary{background:var(--brand);color:#04211f;box-shadow:var(--glow);}
  .btn-primary:hover{background:#3ce2d6;box-shadow:0 0 34px rgba(47,212,200,.5);color:#04211f;transform:translateY(-1px);}
  .btn-primary:active{transform:scale(.98);}
  .btn-ghost{border:1px solid var(--line-strong);color:var(--text-1);background:transparent;}
  .btn-ghost:hover{background:rgba(47,212,200,.10);border-color:var(--brand);color:var(--text-1);}
  .btn-ghost:active{transform:scale(.98);}
  .btn-pill{border-radius:999px;}
  .burger{
    display:none;width:40px;height:40px;border-radius:10px;border:1px solid var(--line);
    background:var(--panel);flex-direction:column;align-items:center;justify-content:center;gap:5px;
  }
  .burger span{display:block;width:17px;height:1.6px;background:var(--text-1);border-radius:2px;transition:transform .25s ease,opacity .25s ease;}
  .burger.open span:nth-child(1){transform:translateY(6.6px) rotate(45deg);}
  .burger.open span:nth-child(2){opacity:0;}
  .burger.open span:nth-child(3){transform:translateY(-6.6px) rotate(-45deg);}
  .mobile-drawer{
    display:none;position:fixed;top:68px;left:0;right:0;z-index:55;
    background:rgba(6,15,22,.97);border-bottom:1px solid var(--line);
    padding:14px 20px 22px;
  }
  .mobile-drawer.open{display:block;}
  .mobile-drawer a{
    display:block;padding:13px 14px;border-radius:12px;color:var(--text-2);font-size:15px;
    border:1px solid transparent;
  }
  .mobile-drawer a:hover{background:rgba(47,212,200,.08);color:var(--text-1);}
  .mobile-drawer a.active{color:var(--brand);border-color:var(--line-strong);background:rgba(47,212,200,.07);}
  .mobile-drawer .drawer-cta{margin-top:12px;}

  /* ---------- glass / components ---------- */
  .glass{
    background:var(--panel);
    border:1px solid var(--line);
    border-radius:var(--radius);
    -webkit-backdrop-filter:blur(12px);backdrop-filter:blur(12px);
    box-shadow:0 20px 40px rgba(0,0,0,.32), inset 0 0 0 1px rgba(255,255,255,.04);
  }
  .card-hover{transition:transform .2s ease-out,border-color .2s ease-out,box-shadow .2s ease-out;}
  .card-hover:hover{transform:translateY(-4px);border-color:var(--line-strong);box-shadow:0 26px 52px rgba(0,0,0,.45),0 0 26px rgba(47,212,200,.14);}
  .chip{
    display:inline-flex;align-items:center;gap:6px;
    font-size:12px;padding:5px 12px;border-radius:999px;
    background:var(--panel);border:1px solid var(--line);color:var(--text-2);
  }
  .chip-brand{border-color:rgba(47,212,200,.42);color:var(--brand);}
  .chip-accent{border-color:rgba(255,180,92,.42);color:var(--accent);}
  .eyebrow{
    display:inline-flex;align-items:center;gap:8px;font-size:12.5px;color:var(--brand);
    letter-spacing:0;margin-bottom:14px;
  }
  .eyebrow::before{content:"";width:22px;height:1px;background:var(--brand);opacity:.7;}
  .h1{font-size:clamp(30px,4.2vw,46px);line-height:1.25;font-weight:700;}
  .h2{font-size:clamp(22px,2.8vw,32px);line-height:1.35;font-weight:700;}
  .h3{font-size:19px;font-weight:600;line-height:1.5;}
  .lead{font-size:16px;line-height:1.85;color:var(--text-2);}
  .muted{color:var(--text-2);font-size:15px;line-height:1.85;}
  .tiny{font-size:13px;color:var(--text-3);}
  .accent{color:var(--accent);}
  .brand-text{color:var(--brand);}
  .section-head{max-width:720px;}
  .section-head .h2{margin-bottom:14px;}
  .media{
    overflow:hidden;border-radius:14px;border:1px solid var(--line);
    background:rgba(255,255,255,.03);
  }
  .media img{width:100%;height:100%;object-fit:cover;transition:transform .2s ease-out;}
  .media:hover img{transform:scale(1.03);}
  .ratio-16x9{aspect-ratio:16/9;}
  .ratio-21x9{aspect-ratio:21/9;}
  .ratio-16x10{aspect-ratio:16/10;}

  /* ---------- hero ---------- */
  .page-hero{
    position:relative;overflow:hidden;
    padding:76px 0 68px;
    background-image:
      linear-gradient(100deg, rgba(4,11,17,.94) 0%, rgba(5,13,20,.86) 48%, rgba(6,15,22,.74) 100%),
      url('/assets/images/backpic/back-2.png');
    background-size:cover;background-position:center right;
    border-bottom:1px solid var(--line);
  }
  .page-hero::after{
    content:"";position:absolute;left:0;right:0;top:0;height:1px;
    background:linear-gradient(90deg,transparent,rgba(47,212,200,.55),transparent);
  }
  .breadcrumb{display:flex;align-items:center;gap:9px;font-size:13px;color:var(--text-3);margin-bottom:20px;flex-wrap:wrap;}
  .breadcrumb a{color:var(--text-3);}
  .breadcrumb a:hover{color:var(--brand);text-decoration:underline;}
  .breadcrumb .sep{color:rgba(232,244,248,.28);}
  .hero-actions{display:flex;flex-wrap:wrap;gap:14px;margin-top:28px;}
  .hero-meta{display:flex;flex-wrap:wrap;gap:10px;margin-top:24px;}

  /* ---------- split ---------- */
  .split{display:grid;grid-template-columns:1.06fr .94fr;gap:56px;align-items:center;}
  .check-list{margin-top:26px;display:grid;gap:14px;}
  .check-list li{display:flex;gap:12px;align-items:flex-start;font-size:15px;color:var(--text-2);}
  .check-list .dot{
    flex:0 0 auto;width:20px;height:20px;border-radius:50%;margin-top:4px;
    display:grid;place-items:center;border:1px solid rgba(47,212,200,.45);background:rgba(47,212,200,.1);
  }
  .check-list .dot svg{width:11px;height:11px;stroke:var(--brand);stroke-width:2.4;fill:none;stroke-linecap:round;stroke-linejoin:round;}
  .float-card{
    position:relative;margin-top:-46px;margin-left:26px;padding:20px 22px;width:min(300px,88%);
    background:rgba(8,19,28,.84);border:1px solid var(--line-strong);border-radius:16px;
    -webkit-backdrop-filter:blur(14px);backdrop-filter:blur(14px);
    box-shadow:0 24px 48px rgba(0,0,0,.5);
  }
  .float-card .num{font-size:28px;font-weight:700;color:var(--accent);line-height:1.2;}
  .float-card .lbl{font-size:13px;color:var(--text-2);}

  /* ---------- feature strips ---------- */
  .strip-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:20px;}
  .strip{
    display:flex;gap:16px;align-items:flex-start;padding:20px;
    background:var(--panel);border:1px solid var(--line);border-radius:16px;
    transition:transform .2s ease-out,border-color .2s ease-out;
  }
  .strip:hover{transform:translateY(-4px);border-color:var(--line-strong);}
  .strip .thumb{
    flex:0 0 auto;width:74px;height:74px;border-radius:13px;overflow:hidden;
    border:1px solid var(--line);
  }
  .strip .thumb img{width:100%;height:100%;object-fit:cover;}
  .strip h3{font-size:16.5px;font-weight:600;margin-bottom:6px;}
  .strip p{font-size:14px;color:var(--text-2);line-height:1.75;display:-webkit-box;-webkit-line-clamp:2;-webkit-box-orient:vertical;overflow:hidden;}

  /* ---------- data band ---------- */
  .data-band{
    display:grid;grid-template-columns:repeat(4,1fr);gap:22px;padding:30px;
    background:linear-gradient(120deg,rgba(47,212,200,.09),rgba(107,123,255,.07));
    border:1px solid var(--line);border-radius:var(--radius);
  }
  .data-band .item{text-align:left;}
  .data-band .num{font-size:30px;font-weight:700;color:var(--accent);line-height:1.2;}
  .data-band .lbl{font-size:13px;color:var(--text-2);margin-top:4px;}

  /* ---------- faq ---------- */
  .faq-list{display:grid;gap:12px;margin-top:32px;}
  .faq-item{background:var(--panel);border:1px solid var(--line);border-radius:16px;overflow:hidden;transition:border-color .2s ease;}
  .faq-item.open{border-color:var(--line-strong);}
  .faq-q{
    width:100%;display:flex;align-items:center;justify-content:space-between;gap:18px;
    padding:20px 24px;text-align:left;font-size:16px;font-weight:600;color:var(--text-1);
  }
  .faq-q:hover{color:var(--brand);}
  .faq-sign{
    flex:0 0 auto;width:26px;height:26px;border-radius:50%;display:grid;place-items:center;
    border:1px solid var(--line-strong);color:var(--brand);font-size:16px;line-height:1;font-weight:400;
  }
  .faq-a{max-height:0;overflow:hidden;transition:max-height .3s ease;}
  .faq-a .inner{padding:0 24px 22px;font-size:15px;line-height:1.8;color:var(--text-2);}

  /* ---------- links ---------- */
  .link-row{display:flex;flex-wrap:wrap;gap:14px 26px;margin-top:20px;}
  .link-row a{
    font-size:14.5px;color:var(--text-2);
    border-bottom:1px solid transparent;padding-bottom:2px;transition:color .2s ease,border-color .2s ease;
  }
  .link-row a:hover{color:var(--brand);border-bottom-color:var(--brand);}

  /* ---------- cta ---------- */
  .cta-wrap{
    display:grid;grid-template-columns:1fr 1fr;gap:44px;align-items:center;
    padding:44px;border-radius:22px;
    background:linear-gradient(130deg,rgba(47,212,200,.12),rgba(107,123,255,.09) 60%,rgba(255,255,255,.02));
    border:1px solid var(--line-strong);
    box-shadow:0 28px 60px rgba(0,0,0,.45),0 0 40px rgba(47,212,200,.12);
  }
  .form-grid{display:grid;gap:14px;margin-top:20px;}
  .field{
    width:100%;padding:13px 16px;border-radius:12px;font-size:14.5px;
    background:rgba(6,15,22,.6);border:1px solid var(--line);color:var(--text-1);
    transition:border-color .2s ease,box-shadow .2s ease;
  }
  .field::placeholder{color:rgba(232,244,248,.4);}
  .field:focus{border-color:var(--brand);box-shadow:0 0 0 3px rgba(47,212,200,.14);outline:none;}
  select.field{appearance:none;-webkit-appearance:none;background-image:linear-gradient(45deg,transparent 50%,var(--text-2) 50%),linear-gradient(135deg,var(--text-2) 50%,transparent 50%);background-position:calc(100% - 20px) 21px,calc(100% - 15px) 21px;background-size:5px 5px,5px 5px;background-repeat:no-repeat;}
  .form-note{font-size:13px;color:var(--text-3);margin-top:12px;}

  /* ---------- footer ---------- */
  .site-footer{
    margin-top:24px;border-top:1px solid var(--line);
    background:linear-gradient(180deg,rgba(255,255,255,.02),rgba(0,0,0,.28));
    padding-top:56px;
  }
  .footer-grid{display:grid;grid-template-columns:1.5fr 1fr 1fr 1.2fr;gap:40px;padding-bottom:44px;}
  .footer-brand p{margin-top:16px;font-size:14px;color:var(--text-2);line-height:1.85;max-width:320px;}
  .footer-col h3{font-size:14px;font-weight:600;color:var(--text-1);margin-bottom:16px;}
  .footer-col ul{display:grid;gap:11px;}
  .footer-col a,.footer-col span{font-size:14px;color:var(--text-2);}
  .footer-col a:hover{color:var(--brand);text-decoration:underline;}
  .footer-bottom{
    display:flex;justify-content:space-between;gap:16px;flex-wrap:wrap;
    padding-top:20px;padding-bottom:24px;border-top:1px solid rgba(130,225,235,.1);
    font-size:13px;color:var(--text-3);
  }

  /* ---------- mobile tab ---------- */
  .mobile-tab{
    display:none;position:fixed;left:0;right:0;bottom:0;z-index:70;
    background:rgba(6,15,22,.94);
    -webkit-backdrop-filter:blur(16px);backdrop-filter:blur(16px);
    border-top:1px solid var(--line);
    padding:8px 6px calc(8px + env(safe-area-inset-bottom));
  }
  .mobile-tab .tabs{display:flex;justify-content:space-around;align-items:stretch;}
  .tab-item{
    flex:1;display:flex;flex-direction:column;align-items:center;gap:4px;
    padding:6px 2px;border-radius:12px;color:var(--text-3);font-size:10.5px;line-height:1.25;
    transition:color .2s ease,transform .2s ease,background .2s ease;
  }
  .tab-item svg{width:21px;height:21px;fill:none;stroke:currentColor;stroke-width:1.7;stroke-linecap:round;stroke-linejoin:round;}
  .tab-item.active{color:var(--brand);transform:translateY(-2px);text-shadow:0 0 14px rgba(47,212,200,.5);}
  .tab-item:active{background:rgba(47,212,200,.08);}

  /* ---------- responsive ---------- */
  @media (max-width:1279px){
    .split{gap:40px;}
  }
  @media (max-width:1023px){
    .nav-links{display:none;}
    .burger{display:flex;}
    .nav-cta{display:none;}
    .split{grid-template-columns:1fr;gap:36px;}
    .strip-grid{grid-template-columns:repeat(2,1fr);}
    .cta-wrap{grid-template-columns:1fr;gap:28px;padding:32px;}
    .data-band{grid-template-columns:repeat(2,1fr);gap:24px;}
    .footer-grid{grid-template-columns:1fr 1fr;gap:32px;}
    .float-card{margin-top:18px;margin-left:0;width:100%;}
  }
  @media (max-width:767px){
    body{padding-bottom:76px;}
    .container-x{padding:0 18px;}
    .nav-wrap{padding:0 18px;}
    .section{padding:56px 0;}
    .section-tight{padding:44px 0;}
    .page-hero{padding:48px 0 46px;background-position:center;}
    .mobile-tab{display:block;}
    .h2{margin-top:0;}
  }
  @media (max-width:639px){
    .strip-grid{grid-template-columns:1fr;}
    .data-band{grid-template-columns:1fr;gap:20px;}
    .footer-grid{grid-template-columns:1fr;gap:28px;}
    .hero-actions .btn{width:100%;}
    .cta-wrap{padding:24px;}
    .strip{flex-direction:row;}
  }

/* roulang page: category2 */
:root{
    --bg:#060f16;
    --bg-2:#08131c;
    --panel:rgba(255,255,255,.045);
    --panel-2:rgba(255,255,255,.07);
    --line:rgba(130,225,235,.16);
    --line-strong:rgba(130,225,235,.32);
    --brand:#2fd4c8;
    --brand-2:#6b7bff;
    --accent:#ffb45c;
    --text-1:#e8f4f8;
    --text-2:rgba(232,244,248,.68);
    --glow:0 0 24px rgba(47,212,200,.35);
    --shadow:0 24px 48px rgba(0,0,0,.45),0 0 0 1px rgba(255,255,255,.06) inset;
    --radius:18px;
    --radius-sm:12px;
  }
  *{box-sizing:border-box}
  html{-webkit-text-size-adjust:100%;scroll-behavior:smooth}
  body{
    margin:0;
    font-family:-apple-system,"PingFang SC","Microsoft YaHei","Noto Sans SC",sans-serif;
    font-size:16px;
    line-height:1.8;
    color:var(--text-1);
    background-color:var(--bg);
    background-image:
      radial-gradient(900px 520px at 6% -8%, rgba(47,212,200,.10), transparent 62%),
      radial-gradient(760px 500px at 102% 6%, rgba(107,123,255,.11), transparent 64%),
      linear-gradient(rgba(130,225,235,.045) 1px, transparent 1px),
      linear-gradient(90deg, rgba(130,225,235,.045) 1px, transparent 1px);
    background-size:auto,auto,44px 44px,44px 44px;
    background-attachment:fixed,fixed,scroll,scroll;
    padding-bottom:88px;
  }
  h1,h2,h3,h4{margin:0;font-weight:700;letter-spacing:0}
  p{margin:0}
  ul,ol{margin:0;padding:0;list-style:none}
  a{color:inherit;text-decoration:none;transition:color .2s ease-out}
  a.underline-link{border-bottom:1px solid transparent}
  a.underline-link:hover{color:var(--brand);border-bottom-color:var(--brand)}
  img{display:block;max-width:100%}
  button,input,textarea,select{font:inherit;color:inherit}
  :focus-visible{outline:2px solid var(--brand);outline-offset:2px;border-radius:6px}
  .container-x{width:100%;max-width:1200px;margin:0 auto;padding:0 32px}
  .section{padding:88px 0}
  .section-sm{padding:64px 0}
  .divider{height:1px;background:linear-gradient(90deg,transparent,rgba(130,225,235,.28),transparent)}
  .glass{
    background:var(--panel);
    border:1px solid var(--line);
    border-radius:var(--radius);
    box-shadow:var(--shadow);
    backdrop-filter:blur(12px);
  }
  .card-hover{transition:transform .2s ease-out,border-color .2s ease-out,box-shadow .2s ease-out}
  .card-hover:hover{transform:translateY(-4px);border-color:var(--line-strong);box-shadow:0 28px 54px rgba(0,0,0,.5),0 0 0 1px rgba(130,225,235,.22) inset}
  .chip{
    display:inline-flex;align-items:center;gap:6px;
    font-size:12px;line-height:1;
    padding:7px 12px;border-radius:999px;
    background:rgba(255,255,255,.05);
    border:1px solid var(--line);
    color:var(--text-2);
    white-space:nowrap;
  }
  .chip.brand{border-color:rgba(47,212,200,.45);color:var(--brand)}
  .chip.accent{border-color:rgba(255,180,92,.42);color:var(--accent)}
  .btn{
    display:inline-flex;align-items:center;justify-content:center;gap:8px;
    padding:12px 22px;border-radius:var(--radius-sm);
    font-size:15px;font-weight:600;line-height:1.2;
    border:1px solid transparent;cursor:pointer;
    transition:all .2s ease-out;
  }
  .btn:active{transform:scale(.98)}
  .btn-primary{background:var(--brand);color:#04211f;box-shadow:var(--glow)}
  .btn-primary:hover{filter:brightness(1.08);box-shadow:0 0 34px rgba(47,212,200,.5)}
  .btn-ghost{background:transparent;border-color:var(--line-strong);color:var(--text-1)}
  .btn-ghost:hover{background:rgba(47,212,200,.10);border-color:var(--brand)}
  .btn-pill{border-radius:999px}
  .eyebrow{
    display:inline-flex;align-items:center;gap:8px;
    font-size:12px;letter-spacing:.08em;color:var(--brand);
    padding:6px 12px;border-radius:999px;
    border:1px solid rgba(47,212,200,.32);
    background:rgba(47,212,200,.07);
  }
  .eyebrow::before{content:"";width:6px;height:6px;border-radius:50%;background:var(--brand);box-shadow:var(--glow)}
  .h1{font-size:clamp(30px,4.2vw,46px);font-weight:700;line-height:1.25}
  .h2{font-size:clamp(22px,2.8vw,32px);font-weight:700;line-height:1.35}
  .h3{font-size:19px;font-weight:600;line-height:1.5}
  .lead{font-size:16px;line-height:1.8;color:var(--text-2)}
  .muted{font-size:13px;color:var(--text-2)}
  .section-head{margin-bottom:40px;max-width:720px}
  .section-head .h2{margin-bottom:14px}

  /* ---------- header ---------- */
  .site-header{
    position:fixed;top:0;left:0;right:0;z-index:60;
    background:rgba(6,15,22,.72);
    backdrop-filter:blur(14px);
    border-bottom:1px solid rgba(130,225,235,.14);
    transition:background .25s ease-out,border-color .25s ease-out;
  }
  .site-header.scrolled{background:rgba(6,15,22,.94);border-bottom-color:rgba(130,225,235,.26)}
  .nav-wrap{
    width:100%;max-width:1200px;margin:0 auto;padding:0 32px;
    height:70px;display:flex;align-items:center;gap:24px;
  }
  .logo{display:inline-flex;align-items:center;gap:10px;font-weight:700;flex:0 0 auto}
  .logo-mark{
    width:34px;height:34px;border-radius:11px;
    display:grid;place-items:center;
    background:linear-gradient(140deg,rgba(47,212,200,.28),rgba(107,123,255,.26));
    border:1px solid var(--line-strong);
    box-shadow:0 0 18px rgba(47,212,200,.22);
  }
  .logo-mark svg{width:19px;height:19px;fill:none;stroke:var(--brand);stroke-width:1.6;stroke-linecap:round;stroke-linejoin:round}
  .logo-text{font-size:17px;letter-spacing:.02em;color:var(--text-1)}
  .nav-links{display:flex;align-items:center;gap:6px;margin-left:auto}
  .nav-link{
    position:relative;font-size:15px;color:var(--text-2);
    padding:8px 14px;border-radius:10px;
  }
  .nav-link:hover{color:var(--text-1);background:rgba(255,255,255,.05)}
  .nav-link.active{color:var(--text-1)}
  .nav-link.active::after{
    content:"";position:absolute;left:14px;right:14px;bottom:2px;height:2px;border-radius:2px;
    background:var(--brand);box-shadow:var(--glow);
  }
  .nav-right{display:flex;align-items:center;gap:12px}
  .nav-cta{padding:10px 18px;font-size:14px}
  .burger{
    display:none;width:42px;height:40px;border-radius:12px;
    background:rgba(255,255,255,.05);border:1px solid var(--line);
    cursor:pointer;padding:0;place-items:center;
  }
  .burger span{display:block;width:18px;height:2px;border-radius:2px;background:var(--text-1);margin:3px auto;transition:.2s}

  /* ---------- mobile tab ---------- */
  .mobile-tab{
    position:fixed;left:0;right:0;bottom:0;z-index:70;
    display:none;
    background:rgba(6,15,22,.95);
    backdrop-filter:blur(14px);
    border-top:1px solid rgba(130,225,235,.18);
    padding-bottom:env(safe-area-inset-bottom);
  }
  .mobile-tab a{
    flex:1;display:flex;flex-direction:column;align-items:center;gap:4px;
    padding:9px 4px 8px;font-size:10.5px;line-height:1.2;color:var(--text-2);
    transition:color .2s ease-out,transform .2s ease-out;
  }
  .mobile-tab a svg{width:20px;height:20px;fill:none;stroke:currentColor;stroke-width:1.6;stroke-linecap:round;stroke-linejoin:round}
  .mobile-tab a.active{color:var(--brand);transform:translateY(-2px)}
  .mobile-tab a.active svg{filter:drop-shadow(0 0 8px rgba(47,212,200,.5))}

  /* ---------- hero ---------- */
  .cat-hero{
    position:relative;overflow:hidden;
    padding:150px 0 72px;
    border-bottom:1px solid rgba(130,225,235,.14);
    background-image:url("/assets/images/backpic/back-1.png");
    background-size:cover;background-position:center;
  }
  .cat-hero::before{
    content:"";position:absolute;inset:0;
    background:linear-gradient(120deg,rgba(6,15,22,.94) 0%,rgba(6,15,22,.86) 46%,rgba(6,15,22,.66) 100%);
  }
  .cat-hero::after{
    content:"";position:absolute;left:0;right:0;top:70px;height:1px;
    background:linear-gradient(90deg,transparent,rgba(47,212,200,.5),transparent);
    opacity:.7;
  }
  .hero-inner{position:relative;z-index:2;max-width:790px}
  .breadcrumb{display:flex;flex-wrap:wrap;align-items:center;gap:8px;font-size:13px;color:rgba(232,244,248,.5);margin-bottom:20px}
  .breadcrumb a:hover{color:var(--brand)}
  .breadcrumb span.sep{color:rgba(232,244,248,.3)}
  .cat-hero h1{margin:16px 0 18px}
  .hero-actions{display:flex;flex-wrap:wrap;gap:14px;margin-top:30px}
  .hero-stats{display:flex;flex-wrap:wrap;gap:12px;margin-top:30px}

  /* ---------- data strip ---------- */
  .data-strip{display:grid;grid-template-columns:repeat(4,1fr);gap:20px}
  .data-cell{padding:24px 22px}
  .data-num{font-size:30px;font-weight:700;color:var(--accent);line-height:1.1;font-family:system-ui,Inter,sans-serif}
  .data-num.brand{color:var(--brand)}
  .data-label{font-size:13px;color:var(--text-2);margin-top:8px}

  /* ---------- flow timeline ---------- */
  .flow{display:flex;flex-direction:column;gap:24px}
  .flow-item{display:grid;grid-template-columns:66px 1fr;gap:18px;position:relative}
  .flow-item::before{
    content:"";position:absolute;left:32px;top:56px;bottom:-24px;width:1px;
    background:linear-gradient(180deg,rgba(47,212,200,.42),rgba(47,212,200,.06));
  }
  .flow-item:last-child::before{display:none}
  .flow-num{
    width:66px;height:44px;border-radius:999px;
    display:grid;place-items:center;
    font-family:system-ui,Inter,sans-serif;font-size:15px;font-weight:700;color:var(--accent);
    background:rgba(255,180,92,.08);
    border:1px solid rgba(255,180,92,.36);
    position:relative;z-index:2;
  }
  .flow-body{display:grid;grid-template-columns:1fr 220px;gap:24px;align-items:center;padding:26px 26px}
  .flow-body h3{margin-bottom:10px}
  .flow-body p{font-size:15px;color:var(--text-2)}
  .flow-thumb{
    border-radius:14px;overflow:hidden;aspect-ratio:16/10;
    border:1px solid var(--line);background:rgba(255,255,255,.04);
  }
  .flow-thumb img{width:100%;height:100%;object-fit:cover;transition:transform .2s ease-out}
  .flow-body:hover .flow-thumb img{transform:scale(1.03)}

  /* ---------- scroll row ---------- */
  .scroll-row{
    display:grid;grid-auto-flow:column;grid-auto-columns:268px;gap:20px;
    overflow-x:auto;padding:6px 4px 22px;
    scroll-snap-type:x mandatory;
    scrollbar-color:rgba(47,212,200,.35) transparent;
  }
  .scroll-row::-webkit-scrollbar{height:6px}
  .scroll-row::-webkit-scrollbar-thumb{background:rgba(47,212,200,.32);border-radius:999px}
  .scroll-card{scroll-snap-align:start;overflow:hidden;padding:0}
  .scroll-thumb{aspect-ratio:16/10;overflow:hidden}
  .scroll-thumb img{width:100%;height:100%;object-fit:cover;transition:transform .2s ease-out}
  .scroll-card:hover .scroll-thumb img{transform:scale(1.03)}
  .scroll-body{padding:18px 20px 22px}
  .scroll-body h3{font-size:17px;margin-bottom:6px}
  .scroll-body p{font-size:14px;color:var(--text-2);display:-webkit-box;-webkit-line-clamp:2;-webkit-box-orient:vertical;overflow:hidden}
  .scroll-tags{display:flex;gap:8px;flex-wrap:wrap;margin-top:14px}

  /* ---------- compare ---------- */
  .compare{overflow:hidden}
  .compare-grid{display:grid;grid-template-columns:1.05fr 1fr 1fr}
  .compare-cell{padding:18px 22px;border-bottom:1px solid rgba(130,225,235,.12);font-size:15px;line-height:1.7}
  .compare-cell.head{font-size:14px;font-weight:600;color:var(--text-1);background:rgba(255,255,255,.03);border-bottom:1px solid rgba(130,225,235,.22)}
  .compare-cell.head.pick{color:var(--brand);background:rgba(47,212,200,.08)}
  .compare-cell.label{color:var(--text-2);font-size:14px}
  .compare-cell.pick{color:var(--text-1);background:rgba(47,212,200,.045)}
  .compare-grid > .compare-cell:nth-last-child(-n+3){border-bottom:none}

  /* ---------- faq ---------- */
  .faq-list{display:flex;flex-direction:column;gap:14px}
  .faq-item{overflow:hidden}
  .faq-q{
    width:100%;display:flex;align-items:center;justify-content:space-between;gap:16px;
    padding:20px 24px;background:transparent;border:none;cursor:pointer;
    font-size:16px;font-weight:600;text-align:left;color:var(--text-1);
  }
  .faq-q:hover{color:var(--brand)}
  .faq-sign{
    flex:0 0 auto;width:26px;height:26px;border-radius:50%;
    display:grid;place-items:center;font-size:15px;font-weight:600;color:var(--brand);
    border:1px solid rgba(47,212,200,.4);background:rgba(47,212,200,.08);
  }
  .faq-a{max-height:0;overflow:hidden;transition:max-height .28s ease-out}
  .faq-a p{padding:0 24px 22px;font-size:15px;line-height:1.8;color:var(--text-2)}
  .faq-item.open .faq-a{max-height:280px}

  /* ---------- cta ---------- */
  .cta-band{position:relative;overflow:hidden;padding:44px 44px;display:grid;grid-template-columns:1fr 1fr;gap:40px}
  .cta-band::before{
    content:"";position:absolute;inset:0;pointer-events:none;
    background:radial-gradient(600px 260px at 12% 0%, rgba(47,212,200,.16), transparent 68%),radial-gradient(520px 260px at 96% 100%, rgba(107,123,255,.14), transparent 70%);
  }
  .cta-left{position:relative;z-index:2}
  .cta-left h2{font-size:clamp(22px,2.6vw,30px);line-height:1.35;margin-bottom:14px}
  .cta-points{display:flex;flex-direction:column;gap:10px;margin-top:22px}
  .cta-points li{display:flex;gap:10px;font-size:14px;color:var(--text-2)}
  .cta-points li::before{content:"";flex:0 0 auto;width:6px;height:6px;margin-top:9px;border-radius:50%;background:var(--brand);box-shadow:var(--glow)}
  .form-card{position:relative;z-index:2;padding:26px;background:rgba(255,255,255,.05)}
  .form-row{margin-bottom:14px}
  .form-row label{display:block;font-size:13px;color:var(--text-2);margin-bottom:6px}
  .form-row input,.form-row textarea{
    width:100%;padding:12px 14px;border-radius:12px;
    background:rgba(6,15,22,.6);border:1px solid var(--line);
    color:var(--text-1);font-size:15px;transition:border-color .2s ease-out,box-shadow .2s ease-out;
  }
  .form-row textarea{resize:vertical;min-height:76px}
  .form-row input::placeholder,.form-row textarea::placeholder{color:rgba(232,244,248,.35)}
  .form-row input:focus,.form-row textarea:focus{outline:none;border-color:var(--brand);box-shadow:0 0 0 3px rgba(47,212,200,.14)}
  .form-submit{width:100%;margin-top:6px}
  .form-note{font-size:12.5px;color:var(--text-2);margin-top:12px}

  /* ---------- inner links ---------- */
  .link-grid{display:grid;grid-template-columns:repeat(4,1fr);gap:18px}
  .link-card{padding:20px 22px;display:block}
  .link-card h3{font-size:15px;margin-bottom:6px}
  .link-card p{font-size:13px;color:var(--text-2)}
  .link-card:hover h3{color:var(--brand)}

  /* ---------- footer ---------- */
  .site-footer{
    border-top:1px solid rgba(130,225,235,.16);
    background:linear-gradient(180deg,rgba(8,19,28,.4),rgba(6,15,22,.95));
    padding-top:64px;margin-top:24px;
  }
  .footer-grid{display:grid;grid-template-columns:1.5fr 1fr 1fr 1.2fr;gap:36px;padding-bottom:48px}
  .footer-brand p{margin-top:16px;font-size:14px;color:var(--text-2);max-width:330px}
  .footer-col h3{font-size:15px;margin-bottom:16px;color:var(--text-1)}
  .footer-col ul{display:flex;flex-direction:column;gap:10px}
  .footer-col li{font-size:14px;color:var(--text-2)}
  .footer-col a:hover{color:var(--brand)}
  .footer-bottom{
    display:flex;flex-wrap:wrap;gap:10px;justify-content:space-between;
    padding-top:22px;padding-bottom:26px;
    border-top:1px solid rgba(130,225,235,.14);
    font-size:13px;color:rgba(232,244,248,.5);
  }

  /* ---------- responsive ---------- */
  @media (max-width:1023px){
    .nav-links{
      position:fixed;top:74px;left:16px;right:16px;
      flex-direction:column;align-items:stretch;gap:4px;
      padding:12px;border-radius:16px;
      background:rgba(8,19,28,.97);border:1px solid var(--line);
      box-shadow:0 24px 48px rgba(0,0,0,.5);
      display:none;
    }
    .nav-links.open{display:flex}
    .nav-link{padding:12px 14px;font-size:15px}
    .nav-link.active{background:rgba(47,212,200,.1)}
    .nav-link.active::after{display:none}
    .burger{display:grid}
    .nav-cta{display:none}
    .mobile-tab{display:flex}
    .section{padding:64px 0}
    .section-sm{padding:48px 0}
    .cat-hero{padding:126px 0 56px}
    .data-strip{grid-template-columns:repeat(2,1fr)}
    .flow-body{grid-template-columns:1fr}
    .cta-band{grid-template-columns:1fr;padding:32px 26px;gap:28px}
    .footer-grid{grid-template-columns:1fr 1fr;gap:28px}
    .link-grid{grid-template-columns:repeat(2,1fr)}
    .compare-grid{grid-template-columns:1fr}
    .compare-cell{border-bottom:1px solid rgba(130,225,235,.1);padding:16px 20px}
    .compare-cell.head{background:rgba(255,255,255,.04)}
    .compare-cell.label{background:rgba(255,255,255,.02);font-weight:600;color:var(--text-1);font-size:14px}
    .compare-grid > .compare-cell:nth-last-child(-n+3){border-bottom:1px solid rgba(130,225,235,.1)}
    .compare-grid > .compare-cell:last-child{border-bottom:none}
  }
  @media (max-width:767px){
    body{padding-bottom:76px}
    .container-x{padding:0 18px}
    .nav-wrap{padding:0 18px;height:66px}
    .nav-links{top:70px}
    .cat-hero{padding:114px 0 48px}
    .section{padding:52px 0}
    .data-strip{grid-template-columns:1fr 1fr;gap:14px}
    .data-cell{padding:18px 16px}
    .data-num{font-size:25px}
    .flow-item{grid-template-columns:52px 1fr;gap:12px}
    .flow-num{width:52px;height:40px;font-size:14px}
    .flow-item::before{left:26px;top:50px}
    .flow-body{padding:20px 18px}
    .scroll-row{grid-auto-columns:236px}
    .faq-q{padding:17px 18px;font-size:15px}
    .faq-a p{padding:0 18px 18px}
    .cta-band{padding:26px 20px}
    .form-card{padding:20px}
    .footer-grid{grid-template-columns:1fr}
    .link-grid{grid-template-columns:1fr}
    .footer-bottom{flex-direction:column}
  }

/* roulang page: category3 */
:root{
  --bg:#060f16;
  --bg-2:#08131c;
  --panel:rgba(255,255,255,.045);
  --panel-2:rgba(255,255,255,.07);
  --line:rgba(130,225,235,.16);
  --line-strong:rgba(130,225,235,.34);
  --brand:#2fd4c8;
  --brand-2:#6b7bff;
  --accent:#ffb45c;
  --text-1:#e8f4f8;
  --text-2:rgba(232,244,248,.68);
  --text-3:rgba(232,244,248,.46);
  --glow:0 0 24px rgba(47,212,200,.35);
  --radius:18px;
  --radius-btn:12px;
  --radius-img:14px;
  --shadow-card:0 24px 48px rgba(0,0,0,.45), inset 0 0 0 1px rgba(255,255,255,.06);
  --shadow-soft:0 16px 34px rgba(0,0,0,.34);
}
*{box-sizing:border-box;}
html{scroll-behavior:smooth;-webkit-text-size-adjust:100%;}
body{
  margin:0;
  padding-top:72px;
  font-family:-apple-system,"PingFang SC","Microsoft YaHei","Noto Sans SC",system-ui,sans-serif;
  font-size:16px;
  line-height:1.8;
  color:var(--text-1);
  background-color:var(--bg);
  background-image:
    radial-gradient(900px 620px at 8% -8%, rgba(47,212,200,.11), transparent 62%),
    radial-gradient(880px 620px at 102% 104%, rgba(107,123,255,.10), transparent 62%),
    linear-gradient(rgba(130,225,235,.04) 1px, transparent 1px),
    linear-gradient(90deg, rgba(130,225,235,.04) 1px, transparent 1px);
  background-size:auto,auto,48px 48px,48px 48px;
  background-attachment:fixed,fixed,scroll,scroll;
  -webkit-font-smoothing:antialiased;
}
img{display:block;max-width:100%;}
a{color:inherit;text-decoration:none;transition:color .2s ease;}
a:hover{color:var(--brand);}
button,input,select,textarea{font:inherit;color:inherit;}
button{cursor:pointer;border:0;background:none;}
ul,ol{margin:0;padding:0;list-style:none;}
h1,h2,h3,h4,p{margin:0;}
:focus-visible{outline:2px solid var(--brand);outline-offset:2px;border-radius:8px;}
::selection{background:rgba(47,212,200,.28);}

.container-x{
  width:100%;
  max-width:1200px;
  margin:0 auto;
  padding:0 32px;
}

/* ---------- 头部导航 ---------- */
.site-header{
  position:fixed;
  top:0;left:0;right:0;
  z-index:80;
  background:rgba(6,15,22,.74);
  -webkit-backdrop-filter:blur(16px);
  backdrop-filter:blur(16px);
  border-bottom:1px solid var(--line);
  transition:background .25s ease, box-shadow .25s ease;
}
.site-header.is-scrolled{
  background:rgba(6,15,22,.94);
  box-shadow:0 12px 30px rgba(0,0,0,.4);
}
.nav-wrap{
  max-width:1200px;
  margin:0 auto;
  padding:0 32px;
  height:72px;
  display:flex;
  align-items:center;
  gap:28px;
}
.logo{
  display:inline-flex;
  align-items:center;
  gap:10px;
  flex-shrink:0;
}
.logo:hover{color:var(--text-1);}
.logo-mark{
  width:38px;height:38px;
  display:grid;place-items:center;
  border-radius:12px;
  color:var(--brand);
  background:linear-gradient(140deg, rgba(47,212,200,.20), rgba(107,123,255,.14));
  border:1px solid var(--line-strong);
  box-shadow:0 0 18px rgba(47,212,200,.18);
}
.logo-mark svg{width:22px;height:22px;fill:none;stroke:currentColor;stroke-width:1.7;stroke-linecap:round;stroke-linejoin:round;}
.logo-text{
  font-size:18px;
  font-weight:700;
  letter-spacing:.4px;
  color:var(--text-1);
}
.nav-links{
  display:flex;
  align-items:center;
  gap:6px;
  margin-left:auto;
}
.nav-link{
  position:relative;
  padding:9px 14px;
  border-radius:10px;
  font-size:15px;
  color:var(--text-2);
  transition:color .2s ease, background .2s ease;
}
.nav-link:hover{color:var(--text-1);background:rgba(255,255,255,.05);}
.nav-link.active{color:var(--brand);}
.nav-link.active::after{
  content:"";
  position:absolute;
  left:50%;bottom:2px;
  width:16px;height:2px;
  border-radius:2px;
  transform:translateX(-50%);
  background:var(--brand);
  box-shadow:0 0 10px rgba(47,212,200,.7);
}
.nav-right{display:flex;align-items:center;gap:12px;margin-left:8px;}
.btn{
  display:inline-flex;
  align-items:center;
  justify-content:center;
  gap:8px;
  padding:11px 22px;
  border-radius:var(--radius-btn);
  font-size:15px;
  font-weight:600;
  line-height:1;
  border:1px solid transparent;
  transition:transform .2s ease, box-shadow .2s ease, background .2s ease, border-color .2s ease, filter .2s ease, color .2s ease;
}
.btn-primary{
  background:var(--brand);
  color:#04222a;
  box-shadow:var(--glow);
}
.btn-primary:hover{
  color:#04222a;
  filter:brightness(1.08);
  box-shadow:0 0 34px rgba(47,212,200,.5);
}
.btn-primary:active{transform:scale(.98);}
.btn-ghost{
  background:transparent;
  border-color:var(--line-strong);
  color:var(--text-1);
}
.btn-ghost:hover{background:rgba(47,212,200,.10);color:var(--text-1);}
.btn-ghost:active{transform:scale(.98);}
.btn[disabled]{opacity:.45;box-shadow:none;cursor:not-allowed;}
.nav-cta{padding:10px 18px;font-size:14px;border-radius:999px;}
.burger{
  display:none;
  width:42px;height:42px;
  border-radius:12px;
  border:1px solid var(--line);
  background:rgba(255,255,255,.05);
  flex-direction:column;
  align-items:center;
  justify-content:center;
  gap:4px;
}
.burger span{display:block;width:18px;height:2px;border-radius:2px;background:var(--text-1);transition:transform .2s ease, opacity .2s ease;}
.burger[aria-expanded="true"] span:nth-child(1){transform:translateY(6px) rotate(45deg);}
.burger[aria-expanded="true"] span:nth-child(2){opacity:0;}
.burger[aria-expanded="true"] span:nth-child(3){transform:translateY(-6px) rotate(-45deg);}
.mobile-menu{
  display:none;
  border-top:1px solid var(--line);
  background:rgba(6,15,22,.97);
}
.mobile-menu.open{display:block;}
.mobile-menu ul{padding:12px 32px 20px;display:grid;gap:4px;}
.mobile-menu a{display:block;padding:12px 10px;border-radius:10px;font-size:15px;color:var(--text-2);}
.mobile-menu a:hover{background:rgba(255,255,255,.05);color:var(--text-1);}
.mobile-menu a.active{color:var(--brand);background:rgba(47,212,200,.09);}

/* ---------- 通用板块 ---------- */
.section{padding:80px 0;}
.section-tight{padding:56px 0;}
.section-head{margin-bottom:36px;max-width:760px;}
.eyebrow{
  display:inline-flex;
  align-items:center;
  gap:8px;
  font-size:13px;
  color:var(--brand);
  letter-spacing:1px;
  margin-bottom:12px;
}
.eyebrow::before{
  content:"";
  width:22px;height:1px;
  background:var(--brand);
  box-shadow:0 0 8px rgba(47,212,200,.8);
}
.h2{
  font-size:clamp(22px,2.8vw,32px);
  font-weight:700;
  line-height:1.35;
}
.section-desc{margin-top:14px;color:var(--text-2);font-size:15px;max-width:640px;}
.divider{height:1px;background:linear-gradient(90deg,transparent,var(--line),transparent);}

/* ---------- 玻璃与卡片 ---------- */
.glass{
  background:var(--panel);
  border:1px solid var(--line);
  border-radius:var(--radius);
  -webkit-backdrop-filter:blur(10px);
  backdrop-filter:blur(10px);
  box-shadow:var(--shadow-card);
}
.card-hover{transition:transform .2s ease-out, border-color .2s ease-out, box-shadow .2s ease-out;}
.card-hover:hover{
  transform:translateY(-4px);
  border-color:var(--line-strong);
  box-shadow:0 30px 52px rgba(0,0,0,.5), 0 0 26px rgba(47,212,200,.14), inset 0 0 0 1px rgba(255,255,255,.08);
}
.chip{
  display:inline-flex;
  align-items:center;
  gap:6px;
  padding:6px 12px;
  font-size:12px;
  line-height:1;
  border-radius:999px;
  color:var(--text-1);
  background:rgba(255,255,255,.05);
  border:1px solid var(--line);
}
.chip-brand{color:var(--brand);border-color:rgba(47,212,200,.36);background:rgba(47,212,200,.09);}
.chip-accent{color:var(--accent);border-color:rgba(255,180,92,.34);background:rgba(255,180,92,.08);}
.media{
  position:relative;
  overflow:hidden;
  border-radius:var(--radius-img);
  border:1px solid var(--line);
  aspect-ratio:16/10;
}
.media img{width:100%;height:100%;object-fit:cover;transition:transform .2s ease;}
.card-hover:hover .media img{transform:scale(1.03);}
.media-16-9{aspect-ratio:16/9;}
.media-4-3{aspect-ratio:4/3;}

/* ---------- 页面主视觉 ---------- */
.page-hero{
  position:relative;
  overflow:hidden;
  border-bottom:1px solid var(--line);
  background-image:linear-gradient(90deg, rgba(6,15,22,.94) 0%, rgba(6,15,22,.82) 46%, rgba(6,15,22,.62) 100%), url("/assets/images/backpic/back-2.png");
  background-size:cover;
  background-position:center;
}
.page-hero::after{
  content:"";
  position:absolute;
  left:0;right:0;top:0;
  height:95px;
  background:linear-gradient(180deg, rgba(47,212,200,.10), transparent);
  pointer-events:none;
}
.hero-inner{position:relative;z-index:2;padding:74px 0 62px;max-width:780px;}
.breadcrumb{
  display:flex;
  flex-wrap:wrap;
  align-items:center;
  gap:8px;
  font-size:13px;
  color:var(--text-3);
  margin-bottom:22px;
}
.breadcrumb span{color:var(--text-3);}
.breadcrumb a{color:var(--text-3);}
.breadcrumb a:hover{color:var(--brand);}
.hero-title{
  font-size:clamp(30px,4.2vw,46px);
  font-weight:700;
  line-height:1.25;
  letter-spacing:-.3px;
}
.hero-sub{
  margin-top:18px;
  font-size:16px;
  color:var(--text-2);
  max-width:560px;
}
.hero-chips{display:flex;flex-wrap:wrap;gap:10px;margin-top:26px;}
.hero-actions{display:flex;flex-wrap:wrap;gap:14px;margin-top:30px;}

/* ---------- 卡片矩阵（1 宽 + 2 窄） ---------- */
.matrix{
  display:grid;
  grid-template-columns:1.35fr 1fr;
  gap:24px;
}
.card-wide{grid-row:span 2;display:flex;flex-direction:column;gap:20px;padding:24px;}
.card-narrow{
  display:grid;
  grid-template-columns:150px 1fr;
  gap:18px;
  padding:18px;
  align-items:center;
}
.card-title{font-size:18px;font-weight:600;line-height:1.5;}
.card-title-sm{font-size:16px;font-weight:600;line-height:1.5;}
.card-text{
  margin-top:8px;
  font-size:14px;
  color:var(--text-2);
  line-height:1.75;
  display:-webkit-box;
  -webkit-line-clamp:2;
  -webkit-box-orient:vertical;
  overflow:hidden;
}
.card-foot{margin-top:14px;display:flex;align-items:center;justify-content:space-between;gap:12px;}
.card-link{font-size:13px;color:var(--brand);display:inline-flex;align-items:center;gap:6px;}
.card-link:hover{color:var(--brand);text-decoration:underline;text-underline-offset:3px;}
.tag-row{display:flex;flex-wrap:wrap;gap:8px;}

/* ---------- 流程条 ---------- */
.flow-strip{
  display:grid;
  grid-template-columns:repeat(4,1fr);
  gap:0;
  border-radius:var(--radius);
  overflow:hidden;
  border:1px solid var(--line);
  background:var(--panel);
}
.flow-item{
  position:relative;
  padding:26px 24px;
}
.flow-item + .flow-item::before{
  content:"";
  position:absolute;
  left:0;top:22px;bottom:22px;
  width:1px;
  background:linear-gradient(180deg,transparent,var(--line),transparent);
}
.flow-num{
  display:inline-flex;
  align-items:center;
  justify-content:center;
  width:34px;height:34px;
  border-radius:50%;
  font-size:14px;
  font-weight:700;
  color:var(--accent);
  border:1px solid rgba(255,180,92,.36);
  background:rgba(255,180,92,.08);
  margin-bottom:14px;
}
.flow-item h3{font-size:16px;font-weight:600;}
.flow-item p{margin-top:8px;font-size:14px;color:var(--text-2);}

/* ---------- 数据带 ---------- */
.stat-band{
  display:grid;
  grid-template-columns:repeat(4,1fr);
  gap:20px;
  padding:28px;
}
.stat-item{padding:6px 4px;}
.stat-num{
  font-size:clamp(24px,3vw,32px);
  font-weight:700;
  color:var(--accent);
  line-height:1.2;
  font-family:system-ui,-apple-system,sans-serif;
}
.stat-label{margin-top:8px;font-size:13px;color:var(--text-2);}
.stat-note{margin-top:12px;font-size:13px;color:var(--text-3);}

/* ---------- 内链区 ---------- */
.link-cloud{display:grid;grid-template-columns:repeat(3,1fr);gap:16px;}
.link-pill{
  display:flex;
  align-items:center;
  justify-content:space-between;
  gap:14px;
  padding:18px 20px;
  border-radius:var(--radius);
  border:1px solid var(--line);
  background:var(--panel);
  font-size:15px;
  color:var(--text-1);
  transition:transform .2s ease, border-color .2s ease, background .2s ease;
}
.link-pill:hover{
  transform:translateY(-3px);
  border-color:var(--line-strong);
  background:var(--panel-2);
  color:var(--brand);
}
.link-pill em{font-style:normal;font-size:13px;color:var(--text-3);}

/* ---------- FAQ ---------- */
.faq-list{display:grid;gap:14px;}
.faq-item{
  border-radius:var(--radius);
  border:1px solid var(--line);
  background:var(--panel);
  overflow:hidden;
  transition:border-color .2s ease, background .2s ease;
}
.faq-item[open]{border-color:var(--line-strong);background:rgba(47,212,200,.05);}
.faq-item summary{
  list-style:none;
  cursor:pointer;
  padding:20px 24px;
  display:flex;
  align-items:center;
  justify-content:space-between;
  gap:18px;
  font-size:16px;
  font-weight:600;
}
.faq-item summary::-webkit-details-marker{display:none;}
.faq-ind{
  flex-shrink:0;
  width:26px;height:26px;
  display:grid;place-items:center;
  border-radius:50%;
  border:1px solid var(--line-strong);
  color:var(--brand);
  font-size:16px;
  line-height:1;
}
.faq-item[open] .faq-ind{background:rgba(47,212,200,.14);}
.faq-body{padding:0 24px 22px;font-size:15px;color:var(--text-2);}

/* ---------- CTA ---------- */
.cta-band{
  position:relative;
  overflow:hidden;
  border-radius:22px;
  border:1px solid var(--line-strong);
  background:linear-gradient(135deg, rgba(47,212,200,.10), rgba(107,123,255,.10));
  box-shadow:0 0 40px rgba(47,212,200,.14), var(--shadow-card);
  padding:38px;
  display:grid;
  grid-template-columns:1fr 1fr;
  gap:36px;
  align-items:center;
}
.cta-band h2{font-size:clamp(22px,2.6vw,28px);font-weight:700;line-height:1.35;}
.cta-band p{margin-top:14px;font-size:15px;color:var(--text-2);max-width:440px;}
.cta-form{display:grid;gap:12px;}
.field{
  width:100%;
  padding:13px 16px;
  border-radius:var(--radius-btn);
  border:1px solid var(--line);
  background:rgba(6,15,22,.55);
  color:var(--text-1);
  font-size:15px;
  transition:border-color .2s ease, box-shadow .2s ease;
}
.field::placeholder{color:var(--text-3);}
.field:focus{border-color:var(--brand);box-shadow:0 0 0 3px rgba(47,212,200,.16);outline:none;}
.form-note{font-size:13px;color:var(--text-3);}

/* ---------- 页脚 ---------- */
.site-footer{
  margin-top:24px;
  border-top:1px solid var(--line);
  background:linear-gradient(180deg, rgba(8,19,28,.6), rgba(6,15,22,.96));
}
.footer-grid{
  display:grid;
  grid-template-columns:1.5fr 1fr 1fr 1fr;
  gap:36px;
  padding-top:58px;
  padding-bottom:42px;
}
.footer-brand p{margin-top:16px;font-size:14px;color:var(--text-2);max-width:320px;line-height:1.8;}
.footer-col h3{font-size:15px;font-weight:600;margin-bottom:16px;}
.footer-col ul{display:grid;gap:10px;}
.footer-col a,.footer-col span{font-size:14px;color:var(--text-2);}
.footer-col a:hover{color:var(--brand);}
.footer-bottom{
  display:flex;
  flex-wrap:wrap;
  align-items:center;
  justify-content:space-between;
  gap:12px;
  padding-top:18px;
  padding-bottom:26px;
  border-top:1px solid var(--line);
  font-size:13px;
  color:var(--text-3);
}

/* ---------- 移动底部标签 ---------- */
.mobile-tabbar{
  display:none;
  position:fixed;
  left:0;right:0;bottom:0;
  z-index:90;
  padding:8px 10px calc(8px + env(safe-area-inset-bottom));
  background:rgba(6,15,22,.94);
  -webkit-backdrop-filter:blur(16px);
  backdrop-filter:blur(16px);
  border-top:1px solid var(--line);
}
.tabbar-inner{display:grid;grid-template-columns:repeat(4,1fr);gap:2px;}
.tab-item{
  display:flex;
  flex-direction:column;
  align-items:center;
  gap:4px;
  padding:6px 2px;
  border-radius:12px;
  font-size:10px;
  line-height:1.2;
  color:var(--text-3);
  transition:color .2s ease, background .2s ease, transform .2s ease;
}
.tab-item svg{width:20px;height:20px;fill:none;stroke:currentColor;stroke-width:1.7;stroke-linecap:round;stroke-linejoin:round;}
.tab-item.active{
  color:var(--brand);
  background:rgba(47,212,200,.10);
  transform:translateY(-2px);
  box-shadow:0 0 18px rgba(47,212,200,.2);
}

/* ---------- 响应式 ---------- */
@media (max-width:1024px){
  .container-x{padding:0 24px;}
  .nav-wrap{padding:0 24px;}
  .nav-links{display:none;}
  .burger{display:flex;}
  .nav-cta{display:none;}
  .matrix{grid-template-columns:1fr;}
  .card-wide{grid-row:auto;}
  .flow-strip{grid-template-columns:repeat(2,1fr);}
  .flow-item:nth-child(3)::before{display:none;}
  .stat-band{grid-template-columns:repeat(2,1fr);}
  .link-cloud{grid-template-columns:1fr;}
  .cta-band{grid-template-columns:1fr;padding:30px;}
  .footer-grid{grid-template-columns:1fr 1fr;gap:28px;}
}
@media (max-width:768px){
  body{padding-top:66px;padding-bottom:76px;}
  .nav-wrap{height:66px;gap:14px;}
  .logo-text{font-size:16px;}
  .section{padding:56px 0;}
  .section-tight{padding:44px 0;}
  .hero-inner{padding:52px 0 44px;}
  .hero-sub{font-size:15px;}
  .mobile-tabbar{display:block;}
  .card-narrow{grid-template-columns:1fr;gap:14px;}
  .stat-band{padding:22px;gap:18px;}
  .faq-item summary{padding:18px 20px;font-size:15px;}
  .faq-body{padding:0 20px 20px;}
  .footer-bottom{flex-direction:column;align-items:flex-start;}
}
@media (max-width:520px){
  .container-x{padding:0 18px;}
  .nav-wrap{padding:0 18px;}
  .mobile-menu ul{padding:12px 18px 18px;}
  .hero-actions{gap:10px;}
  .btn{width:100%;}
  .hero-actions .btn{width:100%;}
  .flow-strip{grid-template-columns:1fr;}
  .flow-item + .flow-item::before{display:none;}
  .flow-item{border-top:1px solid var(--line);}
  .stat-band{grid-template-columns:1fr;}
  .footer-grid{grid-template-columns:1fr;gap:24px;}
  .cta-band{padding:24px;}
  .tab-item{font-size:9.5px;}
}