/* roulang page: index */
:root{
  --bg-0:#060A14;
  --bg-1:#0B1224;
  --bg-2:#111A30;
  --bg-glass:rgba(20,32,58,.55);
  --brand-signal:#2BE3B6;
  --brand-signal-dim:rgba(43,227,182,.16);
  --brand-amber:#FFB35C;
  --brand-blue:#3D6BFF;
  --line:rgba(122,152,220,.16);
  --line-strong:rgba(43,227,182,.42);
  --text-1:#E9EFFB;
  --text-2:#A7B4CC;
  --text-3:#6C7A96;
  --danger:#FF6B7A;
  --radius-lg:18px;
  --radius-md:12px;
  --shadow-card:0 18px 44px rgba(0,0,0,.42);
  --ease:cubic-bezier(.2,.7,.3,1);
  --bs-body-bg:#060A14;
  --bs-body-color:#E9EFFB;
  --bs-primary:#2BE3B6;
  --bs-border-color:rgba(122,152,220,.16);
  --bs-link-color:#2BE3B6;
  --bs-link-hover-color:#6BF2D2;
  --bs-font-sans-serif:'PingFang SC','Microsoft YaHei','Noto Sans SC',system-ui,sans-serif;
}
*,*::before,*::after{box-sizing:border-box;}
html{scroll-behavior:smooth;}
body{
  margin:0;
  font-family:'PingFang SC','Microsoft YaHei','Noto Sans SC',system-ui,-apple-system,sans-serif;
  font-size:16px;
  line-height:1.85;
  color:var(--text-1);
  background-color:var(--bg-0);
  background-image:
    radial-gradient(780px 560px at 84% -8%, rgba(43,227,182,.10), rgba(43,227,182,0) 62%),
    radial-gradient(720px 520px at 4% 22%, rgba(61,107,255,.14), rgba(61,107,255,0) 60%),
    linear-gradient(rgba(122,152,220,.04) 1px, transparent 1px),
    linear-gradient(90deg, rgba(122,152,220,.04) 1px, transparent 1px);
  background-size:100% 100%, 100% 100%, 32px 32px, 32px 32px;
  background-repeat:no-repeat, no-repeat, repeat, repeat;
  background-position:center top, center top, 0 0, 0 0;
  -webkit-font-smoothing:antialiased;
  overflow-x:hidden;
}
img{max-width:100%;display:block;border-radius:14px;}
a{color:var(--brand-signal);text-decoration:none;transition:color .18s var(--ease);}
a:hover{color:#6BF2D2;}
p{margin:0 0 16px;}
h1,h2,h3,h4{margin:0;line-height:1.28;font-weight:800;color:var(--text-1);}
ul,ol{margin:0;padding:0;list-style:none;}
button{font-family:inherit;}
.wrap{width:100%;max-width:1200px;margin:0 auto;padding:0 24px;}

/* ---------- 按钮与表单 ---------- */
.btn{
  display:inline-flex;align-items:center;justify-content:center;gap:8px;
  font-size:15px;font-weight:700;line-height:1;
  padding:14px 28px;border-radius:12px;border:1px solid transparent;
  cursor:pointer;text-decoration:none;white-space:nowrap;
  transition:background .18s var(--ease),color .18s var(--ease),border-color .18s var(--ease),transform .18s var(--ease),box-shadow .18s var(--ease);
}
.btn-signal{
  background:var(--brand-signal);color:#04170F;border-color:var(--brand-signal);
  box-shadow:0 0 22px rgba(43,227,182,.26);
}
.btn-signal:hover{background:#4BF0C9;color:#04170F;transform:translateY(-2px);box-shadow:0 6px 26px rgba(43,227,182,.34);}
.btn-signal:active{transform:translateY(1px);}
.btn-ghost{background:transparent;color:var(--text-1);border-color:var(--line);}
.btn-ghost:hover{color:var(--brand-signal);border-color:var(--line-strong);background:rgba(43,227,182,.07);transform:translateY(-2px);}
.btn-ghost:active{transform:translateY(1px);}
.btn-block{width:100%;}
.btn:focus,.btn:active{box-shadow:none;}
.btn:focus-visible,a:focus-visible,button:focus-visible,input:focus-visible{outline:2px solid var(--brand-signal);outline-offset:3px;}
.form-control,.field{
  width:100%;background:rgba(9,15,28,.85);border:1px solid var(--line);
  border-radius:12px;padding:13px 16px;color:var(--text-1);
  font-size:15px;line-height:1.5;font-family:inherit;
  transition:border-color .18s var(--ease),box-shadow .18s var(--ease),background .18s var(--ease);
}
.form-control::placeholder,.field::placeholder{color:var(--text-3);}
.form-control:focus,.field:focus{
  outline:none;background:rgba(9,15,28,.96);
  border-color:var(--brand-signal);box-shadow:0 0 0 3px rgba(43,227,182,.16);
}

/* ---------- 导航 ---------- */
.site-header{
  position:sticky;top:0;z-index:1050;height:72px;
  background:rgba(6,10,20,.72);
  backdrop-filter:blur(14px);-webkit-backdrop-filter:blur(14px);
  border-bottom:1px solid var(--line);
  transition:border-color .18s var(--ease),box-shadow .18s var(--ease);
}
.site-header.scrolled{border-bottom-color:rgba(43,227,182,.30);box-shadow:0 12px 30px rgba(0,0,0,.38);}
.nav-wrap{display:flex;align-items:center;justify-content:space-between;height:72px;gap:20px;}
.brand{display:flex;align-items:center;gap:10px;color:var(--text-1);font-weight:800;font-size:18px;letter-spacing:.2px;flex:none;}
.brand:hover{color:var(--text-1);}
.brand-mark{
  display:grid;place-items:center;width:34px;height:34px;border-radius:11px;
  background:linear-gradient(160deg,rgba(43,227,182,.20),rgba(61,107,255,.16));
  border:1px solid var(--line);
}
.main-nav{display:flex;align-items:center;gap:4px;}
.main-nav a{
  position:relative;display:block;padding:9px 13px;border-radius:9px;
  font-size:14px;font-weight:500;color:var(--text-2);
  transition:color .18s var(--ease),background .18s var(--ease);
}
.main-nav a:hover{color:var(--text-1);background:rgba(122,152,220,.08);}
.main-nav a.active{color:var(--brand-signal);}
.main-nav a.active::after{
  content:"";position:absolute;left:50%;bottom:1px;transform:translateX(-50%);
  width:22px;height:2px;border-radius:2px;background:var(--brand-signal);
  box-shadow:0 0 12px rgba(43,227,182,.65);
}
.nav-actions{display:flex;align-items:center;gap:12px;flex:none;}
.nav-actions .btn{padding:11px 22px;font-size:14px;}
.nav-toggle{
  display:none;width:44px;height:44px;border-radius:12px;
  border:1px solid var(--line);background:transparent;color:var(--text-1);
  align-items:center;justify-content:center;cursor:pointer;
  transition:border-color .18s var(--ease);
}
.nav-toggle:hover{border-color:var(--line-strong);}
.nav-toggle svg{width:20px;height:20px;}

/* ---------- Hero ---------- */
.hero{position:relative;overflow:hidden;padding:96px 0 104px;}
.hero-bg{position:absolute;inset:0;background-image:url('/assets/images/backpic/back-1.webp');background-size:cover;background-position:center;opacity:.42;}
.hero-bg::after{
  content:"";position:absolute;inset:0;
  background:linear-gradient(102deg,rgba(6,10,20,.96) 0%,rgba(6,10,20,.92) 44%,rgba(6,10,20,.74) 100%);
}
.hero .wrap{position:relative;z-index:2;}
.hero-grid{display:grid;grid-template-columns:1.1fr .9fr;gap:56px;align-items:center;}
.hero-badge{
  display:inline-flex;align-items:center;gap:8px;padding:7px 15px;border-radius:999px;
  border:1px solid var(--line-strong);background:var(--brand-signal-dim);
  color:var(--brand-signal);font-size:13px;font-weight:700;letter-spacing:.05em;
}
.hero-badge .dot{width:7px;height:7px;border-radius:50%;background:var(--brand-signal);box-shadow:0 0 10px var(--brand-signal);animation:pulse 2.4s var(--ease) infinite;}
@keyframes pulse{0%,100%{opacity:1;}50%{opacity:.32;}}
.hero h1{
  font-size:clamp(32px,4.3vw,54px);font-weight:900;line-height:1.15;letter-spacing:-.5px;
  margin:24px 0 20px;
}
.hero h1 .hl{color:var(--brand-signal);}
.hero-sub{font-size:17px;color:var(--text-2);line-height:1.85;max-width:580px;margin:0;}
.hero-sub strong{color:var(--text-1);font-weight:600;}
.hero-actions{display:flex;gap:14px;margin:32px 0 30px;flex-wrap:wrap;}
.trust-row{display:flex;gap:26px;flex-wrap:wrap;font-size:13px;color:var(--text-3);}
.trust-row span{display:inline-flex;align-items:center;gap:8px;}
.trust-row svg{width:15px;height:15px;flex:none;color:var(--brand-signal);}

.hero-panel{
  position:relative;background:var(--bg-glass);
  backdrop-filter:blur(18px);-webkit-backdrop-filter:blur(18px);
  border:1px solid var(--line);border-radius:var(--radius-lg);
  box-shadow:var(--shadow-card);overflow:hidden;
}
.hero-panel::before{content:"";position:absolute;top:0;left:0;right:0;height:1px;background:linear-gradient(90deg,rgba(255,255,255,.20),transparent);}
.panel-head{display:flex;align-items:center;justify-content:space-between;gap:12px;padding:20px 24px;border-bottom:1px solid var(--line);}
.panel-title{font-size:15px;font-weight:700;}
.status-pill{display:inline-flex;align-items:center;gap:7px;font-size:12px;font-weight:700;color:var(--brand-signal);letter-spacing:.05em;}
.status-pill i{width:7px;height:7px;border-radius:50%;background:var(--brand-signal);box-shadow:0 0 10px var(--brand-signal);animation:pulse 2.4s var(--ease) infinite;}
.panel-body{padding:24px;display:grid;gap:16px;}
.panel-body label{display:block;font-size:13px;color:var(--text-2);margin-bottom:7px;font-weight:500;}
.panel-note{font-size:12px;color:var(--text-3);margin:0;line-height:1.7;}

/* ---------- 区块通用 ---------- */
.section{padding:96px 0;position:relative;}
.section-head{display:flex;align-items:flex-end;justify-content:space-between;gap:36px;margin-bottom:48px;}
.eyebrow{display:inline-block;font-size:12px;font-weight:700;letter-spacing:.16em;color:var(--brand-amber);margin-bottom:14px;}
.section h2{font-size:clamp(23px,2.6vw,31px);font-weight:800;line-height:1.32;letter-spacing:-.2px;max-width:700px;}
.section-desc{font-size:15px;color:var(--text-2);line-height:1.8;max-width:350px;margin:0;}
.more-link{font-size:14px;font-weight:700;color:var(--brand-signal);white-space:nowrap;padding-bottom:4px;}
.more-link:hover{color:#6BF2D2;}

/* ---------- 三步 ---------- */
.steps-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:24px;}
.step-card{
  position:relative;background:var(--bg-glass);border:1px solid var(--line);
  border-radius:var(--radius-lg);padding:28px;
  transition:border-color .18s var(--ease),transform .18s var(--ease);
}
.step-card::after{content:"";position:absolute;top:56px;right:-24px;width:24px;border-top:1px dashed rgba(122,152,220,.34);}
.step-card:last-child::after{display:none;}
.step-card:hover{border-color:var(--brand-signal-dim);transform:translateY(-4px);}
.step-num{display:block;font-size:34px;font-weight:900;color:var(--brand-signal);font-variant-numeric:tabular-nums;letter-spacing:-1px;line-height:1;margin-bottom:18px;}
.step-card h3{font-size:19px;font-weight:700;margin-bottom:10px;}
.step-card p{font-size:15px;color:var(--text-2);line-height:1.8;margin:0;}
.step-note{font-size:12px;color:var(--text-3);margin:16px 0 0;padding-top:14px;border-top:1px dashed var(--line);}

/* ---------- 说明区 ---------- */
.cap-grid{display:grid;grid-template-columns:1.05fr .95fr;gap:56px;align-items:center;}
.cap-grid h2{font-size:clamp(23px,2.6vw,30px);margin-bottom:18px;}
.cap-grid p{font-size:16px;color:var(--text-2);line-height:1.85;}
.check-list{display:grid;gap:14px;margin:26px 0 30px;}
.check-list li{position:relative;padding-left:32px;font-size:15px;color:var(--text-2);line-height:1.75;}
.check-list li::before{
  content:"";position:absolute;left:0;top:6px;width:17px;height:17px;border-radius:6px;
  background:var(--brand-signal-dim);border:1px solid var(--line-strong);
}
.check-list li::after{
  content:"";position:absolute;left:5px;top:12px;width:7px;height:4px;
  border-left:2px solid var(--brand-signal);border-bottom:2px solid var(--brand-signal);
  transform:rotate(-45deg);
}
.cap-media{position:relative;border-radius:18px;overflow:hidden;border:1px solid var(--line);box-shadow:var(--shadow-card);}
.cap-media img{width:100%;aspect-ratio:16/10;object-fit:cover;border-radius:0;}

/* ---------- 证据区 ---------- */
.proof-grid{display:grid;grid-template-columns:7fr 5fr;gap:24px;align-items:stretch;}
.proof-main{
  display:flex;flex-direction:column;
  background:var(--bg-glass);border:1px solid var(--line);
  border-radius:var(--radius-lg);padding:32px;
}
.stat-row{display:grid;grid-template-columns:repeat(3,1fr);gap:18px;margin-bottom:28px;}
.stat{border-left:2px solid var(--brand-signal);padding-left:14px;}
.stat b{display:block;font-size:32px;font-weight:900;color:var(--brand-signal);font-variant-numeric:tabular-nums;line-height:1.1;}
.stat b small{font-size:13px;font-weight:700;color:var(--brand-amber);margin-left:4px;}
.stat span{display:block;font-size:13px;color:var(--text-2);margin-top:4px;}
.proof-quote{
  border-left:3px solid var(--brand-signal);padding:2px 0 2px 18px;margin:0 0 18px;
  font-size:15.5px;color:var(--text-2);line-height:1.85;
}
.proof-source{font-size:12px;color:var(--text-3);}
.proof-side{display:grid;gap:16px;align-content:start;}
.side-card{
  display:flex;align-items:center;justify-content:space-between;gap:16px;
  background:var(--bg-glass);border:1px solid var(--line);border-radius:14px;
  padding:20px 22px;color:var(--text-1);
  transition:border-color .18s var(--ease),transform .18s var(--ease);
}
.side-card:hover{border-color:var(--line-strong);transform:translateY(-4px);color:var(--text-1);}
.side-card h3{font-size:16px;font-weight:700;margin-bottom:4px;}
.side-card p{font-size:13px;color:var(--text-2);margin:0;line-height:1.7;}
.side-card .arrow{color:var(--brand-signal);font-size:18px;flex:none;line-height:1;}
.trust-badges{display:flex;flex-wrap:wrap;gap:8px;margin-top:4px;}
.trust-badges span{font-size:12px;color:var(--text-2);border:1px solid var(--line);border-radius:999px;padding:5px 12px;}

/* ---------- 资讯列表 ---------- */
.news-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:24px;}
.news-card{
  display:block;height:100%;
  background:var(--bg-glass);border:1px solid var(--line);
  border-radius:var(--radius-lg);padding:18px;color:var(--text-1);
  transition:border-color .18s var(--ease),transform .18s var(--ease);
}
.news-card:hover{transform:translateY(-4px);border-color:var(--line-strong);color:var(--text-1);}
.news-media{position:relative;border-radius:14px;overflow:hidden;margin-bottom:16px;}
.news-media img{width:100%;aspect-ratio:16/9;object-fit:cover;border-radius:0;transition:transform .35s var(--ease);}
.news-card:hover .news-media img{transform:scale(1.03);}
.news-badge{
  position:absolute;top:12px;right:12px;
  font-size:12px;font-weight:700;color:var(--brand-amber);
  background:rgba(9,15,28,.82);border:1px solid rgba(255,179,92,.45);
  border-radius:999px;padding:4px 11px;
  backdrop-filter:blur(6px);-webkit-backdrop-filter:blur(6px);
}
.news-card h3{
  font-size:17px;font-weight:700;line-height:1.5;margin-bottom:8px;
  display:-webkit-box;-webkit-line-clamp:2;-webkit-box-orient:vertical;overflow:hidden;
}
.news-card p{
  font-size:14px;color:var(--text-2);line-height:1.7;margin:0 0 14px;
  display:-webkit-box;-webkit-line-clamp:3;-webkit-box-orient:vertical;overflow:hidden;
}
.news-foot{
  display:flex;align-items:center;justify-content:space-between;gap:12px;
  font-size:12px;color:var(--text-3);padding-top:12px;border-top:1px solid var(--line);
}
.news-foot .more{color:var(--brand-signal);font-weight:700;}
.empty-state{
  grid-column:1 / -1;text-align:center;padding:56px 24px;
  background:var(--bg-glass);border:1px solid var(--line);border-radius:var(--radius-lg);
}
.empty-state .empty-icon{
  width:46px;height:46px;margin:0 auto 16px;border-radius:14px;
  display:grid;place-items:center;border:1px solid var(--line-strong);
  background:var(--brand-signal-dim);color:var(--brand-signal);
  font-size:20px;font-weight:800;
}
.empty-state p{color:var(--text-2);font-size:14px;margin:0 0 18px;}

/* ---------- FAQ ---------- */
.faq-acc .accordion-item{
  background:var(--bg-glass);border:1px solid var(--line);
  border-radius:14px;margin-bottom:12px;overflow:hidden;
  transition:border-color .18s var(--ease);
}
.faq-acc .accordion-item:has(.accordion-button:not(.collapsed)){border-color:var(--line-strong);}
.faq-acc .accordion-header{margin:0;}
.faq-acc .accordion-button{
  display:flex;align-items:center;gap:14px;
  width:100%;background:transparent;border:0;box-shadow:none;
  color:var(--text-1);font-size:16px;font-weight:700;line-height:1.55;
  padding:20px 24px;text-align:left;
}
.faq-acc .accordion-button:not(.collapsed){background:transparent;color:var(--text-1);box-shadow:none;}
.faq-acc .accordion-button:focus{box-shadow:none;border-color:transparent;}
.faq-acc .accordion-button::after{
  content:"";width:9px;height:9px;flex:none;margin-left:auto;
  border-right:2px solid var(--text-2);border-bottom:2px solid var(--text-2);
  transform:rotate(45deg);background-image:none;
  transition:transform .18s var(--ease),border-color .18s var(--ease);
}
.faq-acc .accordion-button:not(.collapsed)::after{transform:rotate(-135deg);border-color:var(--brand-signal);}
.q-mark{
  display:grid;place-items:center;flex:none;width:28px;height:28px;border-radius:50%;
  background:var(--brand-signal-dim);border:1px solid var(--line-strong);
  color:var(--brand-signal);font-size:14px;font-weight:800;
}
.faq-acc .accordion-body{padding:0 24px 24px 66px;color:var(--text-2);font-size:15px;line-height:1.8;}

/* ---------- CTA ---------- */
.cta-card{
  position:relative;overflow:hidden;
  background:var(--bg-glass);border:1px solid var(--line);border-radius:22px;
  padding:48px;display:grid;grid-template-columns:1.15fr .85fr;gap:48px;align-items:center;
  box-shadow:var(--shadow-card);
}
.cta-card::before{
  content:"";position:absolute;top:-42%;right:-8%;width:520px;height:520px;border-radius:50%;
  background:radial-gradient(circle,rgba(43,227,182,.16),rgba(43,227,182,0) 68%);
  pointer-events:none;
}
.cta-card h2{font-size:clamp(23px,2.6vw,30px);margin-bottom:18px;position:relative;z-index:1;}
.cta-list{display:grid;gap:13px;margin:0 0 20px;position:relative;z-index:1;}
.cta-list li{position:relative;padding-left:30px;font-size:15px;color:var(--text-2);line-height:1.75;}
.cta-list li::before{
  content:"";position:absolute;left:0;top:5px;width:17px;height:17px;border-radius:50%;
  background:var(--brand-signal-dim);border:1px solid var(--line-strong);
}
.cta-list li::after{
  content:"";position:absolute;left:5px;top:11px;width:7px;height:4px;
  border-left:2px solid var(--brand-signal);border-bottom:2px solid var(--brand-signal);
  transform:rotate(-45deg);
}
.cta-note{font-size:13px;color:var(--text-3);margin:0;position:relative;z-index:1;}
.cta-form{display:grid;gap:14px;position:relative;z-index:1;}
.cta-form .hint{font-size:12px;color:var(--text-3);margin:0;line-height:1.7;}

/* ---------- 页脚 ---------- */
.site-footer{
  position:relative;padding:64px 0 0;margin-top:24px;
  background:linear-gradient(180deg,rgba(11,18,36,0),rgba(11,18,36,.86));
}
.site-footer::before{
  content:"";position:absolute;top:0;left:0;right:0;height:1px;
  background:linear-gradient(90deg,transparent,rgba(43,227,182,.6),transparent);
}
.footer-grid{display:grid;grid-template-columns:1.6fr 1fr 1fr 1.1fr;gap:40px;padding-bottom:48px;}
.footer-brand .brand{margin-bottom:16px;}
.footer-brand p{font-size:14px;color:var(--text-2);line-height:1.8;max-width:310px;margin:0 0 20px;}
.back-top{
  display:inline-flex;align-items:center;gap:8px;
  font-size:13px;font-weight:600;color:var(--text-2);
  border:1px solid var(--line);border-radius:999px;padding:8px 16px;
  transition:color .18s var(--ease),border-color .18s var(--ease),transform .18s var(--ease);
}
.back-top:hover{color:var(--brand-signal);border-color:var(--line-strong);transform:translateY(-2px);}
.footer-col h4{font-size:14px;font-weight:700;margin-bottom:16px;color:var(--text-1);}
.footer-col ul{display:grid;gap:10px;}
.footer-col a,.footer-col li{display:inline-block;font-size:14px;color:var(--text-2);line-height:1.7;transition:color .18s var(--ease),transform .18s var(--ease);}
.footer-col a:hover{color:var(--brand-signal);transform:translateX(2px);}
.footer-col li small{display:block;font-size:12px;color:var(--text-3);}
.footer-bottom{
  border-top:1px solid var(--line);padding:22px 0 26px;
  display:flex;flex-wrap:wrap;justify-content:space-between;gap:12px;
  font-size:13px;color:var(--text-3);
}

/* ---------- 响应式 ---------- */
@media (max-width:1199px){
  .hero-grid{gap:40px;}
  .cap-grid{gap:40px;}
}
@media (max-width:991px){
  .nav-toggle{display:inline-flex;}
  .main-nav{
    position:fixed;top:72px;left:0;right:0;bottom:0;z-index:1040;
    display:none;flex-direction:column;align-items:stretch;gap:4px;
    padding:24px 18px 40px;overflow-y:auto;
    background:rgba(6,10,20,.98);
    backdrop-filter:blur(16px);-webkit-backdrop-filter:blur(16px);
    border-top:1px solid var(--line);
  }
  .main-nav.open{display:flex;}
  .main-nav a{padding:16px 18px;font-size:16px;border-radius:12px;}
  .main-nav a::before{
    content:"";position:absolute;left:0;top:50%;transform:translateY(-50%);
    width:3px;height:18px;border-radius:3px;background:var(--brand-signal);
    box-shadow:0 0 10px rgba(43,227,182,.7);opacity:0;
  }
  .main-nav a.active::before{opacity:1;}
  .main-nav a.active::after{display:none;}
  .hero{padding:72px 0 80px;}
  .hero-grid{grid-template-columns:1fr;gap:40px;}
  .hero-panel{max-width:520px;}
  .cap-grid{grid-template-columns:1fr;}
  .proof-grid{grid-template-columns:1fr;}
  .steps-grid{grid-template-columns:1fr;}
  .step-card::after{display:none;}
  .news-grid{grid-template-columns:repeat(2,1fr);}
  .cta-card{grid-template-columns:1fr;padding:36px;gap:32px;}
  .footer-grid{grid-template-columns:1fr 1fr;gap:32px;}
  .section{padding:72px 0;}
  .section-head{flex-direction:column;align-items:flex-start;gap:14px;margin-bottom:36px;}
  .section-desc{max-width:100%;}
}
@media (max-width:767px){
  .wrap{padding:0 18px;}
  .nav-actions .btn{padding:10px 16px;font-size:13px;}
  .hero{padding:52px 0 60px;}
  .hero h1{margin:20px 0 16px;}
  .hero-sub{font-size:16px;}
  .hero-actions{gap:12px;margin:26px 0 24px;}
  .hero-actions .btn{width:100%;}
  .trust-row{gap:14px;font-size:12px;}
  .section{padding:56px 0;}
  .step-card{padding:24px;}
  .stat-row{grid-template-columns:1fr;gap:14px;}
  .news-grid{grid-template-columns:1fr;}
  .cta-card{padding:26px;border-radius:18px;}
  .faq-acc .accordion-button{font-size:15px;padding:18px 18px;gap:12px;}
  .faq-acc .accordion-body{padding:0 18px 20px 18px;}
  .footer-grid{grid-template-columns:1fr;gap:28px;}
  .footer-bottom{flex-direction:column;align-items:flex-start;}
}
@media (prefers-reduced-motion:reduce){
  *,*::before,*::after{animation-duration:.001ms !important;animation-iteration-count:1 !important;transition-duration:.001ms !important;}
  html{scroll-behavior:auto;}
}

/* roulang page: article */
:root{
  --bg-0:#060A14;
  --bg-1:#0B1224;
  --bg-2:#111A30;
  --bg-glass:rgba(20,32,58,.55);
  --brand-signal:#2BE3B6;
  --brand-signal-dim:rgba(43,227,182,.16);
  --brand-amber:#FFB35C;
  --brand-blue:#3D6BFF;
  --line:rgba(122,152,220,.16);
  --line-strong:rgba(43,227,182,.42);
  --text-1:#E9EFFB;
  --text-2:#A7B4CC;
  --text-3:#6C7A96;
  --danger:#FF6B7A;
  --radius-lg:18px;
  --radius-md:14px;
  --radius-sm:12px;
  --shadow-card:0 18px 44px rgba(0,0,0,.42);
  --shadow-glow:0 0 22px rgba(43,227,182,.32);
  --ease:cubic-bezier(.2,.7,.3,1);
  --t:180ms var(--ease);
  --bs-body-bg:#060A14;
  --bs-body-color:#A7B4CC;
  --bs-primary:#2BE3B6;
  --bs-primary-rgb:43,227,182;
  --bs-border-color:rgba(122,152,220,.16);
  --bs-link-color:#2BE3B6;
  --bs-link-hover-color:#5CF0CA;
  --bs-font-sans-serif:'PingFang SC','Microsoft YaHei','Noto Sans SC',system-ui,sans-serif;
}
*,*::before,*::after{box-sizing:border-box;}
html{scroll-behavior:smooth;-webkit-text-size-adjust:100%;}
body{
  margin:0;
  font-family:'PingFang SC','Microsoft YaHei','Noto Sans SC',system-ui,sans-serif;
  font-size:16px;
  line-height:1.85;
  color:var(--text-2);
  background-color:var(--bg-0);
  background-image:
    radial-gradient(680px 520px at 82% -8%, rgba(43,227,182,.10), transparent 70%),
    radial-gradient(620px 480px at 8% 18%, rgba(61,107,255,.13), transparent 70%),
    linear-gradient(rgba(122,152,220,.04) 1px, transparent 1px),
    linear-gradient(90deg, rgba(122,152,220,.04) 1px, transparent 1px);
  background-size:auto, auto, 32px 32px, 32px 32px;
  background-attachment:fixed;
  -webkit-font-smoothing:antialiased;
}
img{max-width:100%;height:auto;display:block;}
a{color:var(--brand-signal);text-decoration:none;transition:color var(--t);}
a:hover{color:#5CF0CA;}
h1,h2,h3,h4{color:var(--text-1);margin:0;line-height:1.3;}
p{margin:0 0 20px;}
ul,ol{margin:0 0 20px;padding-left:22px;}
button{font-family:inherit;}
::selection{background:rgba(43,227,182,.28);color:#fff;}
:focus-visible{outline:2px solid var(--brand-signal);outline-offset:3px;}
.wrap{width:100%;max-width:1200px;margin:0 auto;padding:0 24px;}

/* ---------- Header ---------- */
.site-header{
  position:sticky;top:0;z-index:1000;
  background:rgba(6,10,20,.72);
  -webkit-backdrop-filter:blur(14px);
  backdrop-filter:blur(14px);
  border-bottom:1px solid var(--line);
  transition:border-color var(--t), background var(--t);
}
.site-header.is-scrolled{
  border-bottom-color:var(--line-strong);
  background:rgba(6,10,20,.9);
}
.nav-wrap{
  display:flex;align-items:center;justify-content:space-between;
  gap:24px;min-height:72px;
}
.brand{display:inline-flex;align-items:center;gap:10px;color:var(--text-1);font-weight:800;font-size:17px;letter-spacing:.2px;}
.brand:hover{color:var(--text-1);}
.brand-mark{display:inline-flex;align-items:center;justify-content:center;width:34px;height:34px;border-radius:10px;background:rgba(43,227,182,.08);border:1px solid var(--line);}
.brand-text{white-space:nowrap;}
.main-nav{display:flex;align-items:center;gap:28px;}
.main-nav a{
  position:relative;font-size:14px;color:var(--text-2);padding:6px 0;
  transition:color var(--t);
}
.main-nav a::after{
  content:"";position:absolute;left:50%;bottom:-4px;width:0;height:2px;
  background:var(--brand-signal);border-radius:2px;transform:translateX(-50%);
  box-shadow:var(--shadow-glow);transition:width var(--t);
}
.main-nav a:hover{color:var(--text-1);}
.main-nav a:hover::after{width:16px;opacity:.6;}
.main-nav a.active{color:var(--brand-signal);}
.main-nav a.active::after{width:22px;}
.nav-actions{display:flex;align-items:center;gap:12px;}
.btn{
  display:inline-flex;align-items:center;justify-content:center;gap:8px;
  font-size:14px;font-weight:700;line-height:1;border-radius:var(--radius-sm);
  padding:14px 26px;border:1px solid transparent;cursor:pointer;
  transition:transform var(--t),background var(--t),color var(--t),border-color var(--t),box-shadow var(--t);
}
.btn-signal{
  background:var(--brand-signal);color:#04120F;
  box-shadow:0 8px 24px rgba(43,227,182,.22);
}
.btn-signal:hover{background:#4BF0C8;color:#04120F;transform:translateY(-2px);box-shadow:0 12px 28px rgba(43,227,182,.3);}
.btn-signal:active{transform:translateY(1px);}
.btn-ghost{
  background:transparent;color:var(--text-1);border-color:var(--line);
}
.btn-ghost:hover{color:var(--brand-signal);border-color:var(--line-strong);transform:translateY(-2px);}
.nav-actions .btn{padding:12px 22px;font-size:14px;}
.nav-toggle{
  display:none;width:42px;height:42px;border-radius:12px;
  background:rgba(255,255,255,.04);border:1px solid var(--line);color:var(--text-1);
  align-items:center;justify-content:center;cursor:pointer;transition:border-color var(--t),color var(--t);
}
.nav-toggle svg{width:22px;height:22px;}
.nav-toggle:hover{border-color:var(--line-strong);color:var(--brand-signal);}

/* ---------- 面包屑 ---------- */
.crumbs{
  display:flex;flex-wrap:wrap;align-items:center;gap:8px;
  font-size:13px;color:var(--text-3);padding:26px 0 0;
}
.crumbs a{color:var(--text-3);}
.crumbs a:hover{color:var(--brand-signal);}
.crumbs .sep{color:rgba(122,152,220,.4);font-size:12px;}
.crumbs .current{color:var(--text-1);max-width:100%;overflow:hidden;text-overflow:ellipsis;white-space:nowrap;}

/* ---------- 文章头部 ---------- */
.article-hero{padding:22px 0 8px;}
.hero-tag{
  display:inline-flex;align-items:center;gap:8px;
  font-size:12px;font-weight:700;letter-spacing:.08em;
  color:var(--brand-signal);background:var(--brand-signal-dim);
  border:1px solid var(--line-strong);border-radius:999px;padding:6px 14px;
  margin-bottom:18px;
}
.hero-tag .dot{width:6px;height:6px;border-radius:50%;background:var(--brand-signal);box-shadow:0 0 10px var(--brand-signal);}
.article-hero h1{
  font-size:35px;font-weight:800;letter-spacing:-.3px;line-height:1.32;
  color:var(--text-1);margin-bottom:18px;max-width:900px;
}
.meta-row{display:flex;flex-wrap:wrap;align-items:center;gap:10px;font-size:13px;color:var(--text-2);}
.meta-row .pill{
  display:inline-flex;align-items:center;gap:6px;
  padding:4px 12px;border-radius:999px;font-size:12px;font-weight:700;
  color:var(--brand-amber);border:1px solid rgba(255,179,92,.35);
  background:rgba(255,179,92,.08);
}
.meta-row .sep{color:rgba(122,152,220,.4);}
.meta-row time,.meta-row .read-time{font-variant-numeric:tabular-nums;}

/* ---------- 主体布局 ---------- */
.article-section{padding:36px 0 8px;}
.article-layout{
  display:grid;grid-template-columns:minmax(0,820px) 220px;
  gap:56px;justify-content:center;align-items:start;
}
.article-main{min-width:0;}
.article-card{
  position:relative;
  background:var(--bg-glass);
  border:1px solid var(--line);
  border-radius:var(--radius-lg);
  box-shadow:var(--shadow-card);
  padding:36px 38px 42px;
  overflow:hidden;
}
.article-card::before{
  content:"";position:absolute;left:0;right:0;top:0;height:1px;
  background:linear-gradient(90deg,rgba(255,255,255,.18),transparent);
}
.article-body{font-size:17px;line-height:1.9;color:var(--text-2);}
.article-body > *:first-child{margin-top:0;}
.article-body p{margin:0 0 20px;}
.article-body h2{
  position:relative;font-size:24px;font-weight:800;color:var(--text-1);
  margin:44px 0 16px;padding-left:16px;line-height:1.45;
  scroll-margin-top:96px;
}
.article-body h2::before{
  content:"";position:absolute;left:0;top:6px;width:4px;height:20px;
  border-radius:2px;background:var(--brand-signal);box-shadow:0 0 12px rgba(43,227,182,.5);
}
.article-body h3{
  font-size:19px;font-weight:700;color:var(--text-1);
  margin:32px 0 14px;scroll-margin-top:96px;
}
.article-body h4{font-size:17px;font-weight:700;color:var(--text-1);margin:24px 0 12px;}
.article-body ul,.article-body ol{padding-left:0;list-style:none;margin:0 0 22px;}
.article-body ul li{
  position:relative;padding-left:20px;margin-bottom:10px;line-height:1.8;
}
.article-body ul li::before{
  content:"";position:absolute;left:0;top:11px;width:7px;height:7px;border-radius:50%;
  background:var(--brand-signal);opacity:.85;
}
.article-body ol{counter-reset:olc;}
.article-body ol li{
  position:relative;padding-left:28px;margin-bottom:10px;counter-increment:olc;line-height:1.8;
}
.article-body ol li::before{
  content:counter(olc,decimal-leading-zero);
  position:absolute;left:0;top:1px;font-size:13px;font-weight:700;
  color:var(--brand-signal);font-variant-numeric:tabular-nums;
}
.article-body blockquote{
  margin:26px 0;padding:20px 22px;border-left:3px solid var(--brand-signal);
  background:var(--bg-glass);border-radius:0 var(--radius-sm) var(--radius-sm) 0;
  color:var(--text-2);font-size:16px;
}
.article-body blockquote p:last-child{margin-bottom:0;}
.article-body a{color:var(--brand-signal);border-bottom:1px solid rgba(43,227,182,.35);}
.article-body a:hover{color:#5CF0CA;border-bottom-color:rgba(92,240,202,.7);}
.article-body img{border-radius:var(--radius-md);margin:24px 0 10px;}
.article-body figure{margin:24px 0;}
.article-body figcaption{font-size:12px;color:var(--text-3);margin-top:8px;text-align:center;}
.article-body table{
  width:100%;border-collapse:collapse;margin:24px 0;font-size:15px;
  background:rgba(17,26,48,.72);border-radius:var(--radius-sm);overflow:hidden;
}
.article-body th,.article-body td{
  padding:12px 16px;border-bottom:1px solid var(--line);text-align:left;vertical-align:top;
}
.article-body th{color:var(--text-2);font-weight:700;background:rgba(255,255,255,.03);}
.article-body tr:last-child td{border-bottom:none;}
.article-body code{
  background:rgba(43,227,182,.1);color:var(--brand-signal);
  padding:2px 7px;border-radius:6px;font-size:14px;
}
.article-body hr{border:none;border-top:1px solid var(--line);margin:36px 0;}
.article-body strong{color:var(--text-1);font-weight:700;}

/* ---------- 目录 ---------- */
.article-aside{position:sticky;top:100px;}
.toc-box{
  background:var(--bg-glass);border:1px solid var(--line);border-radius:var(--radius-md);
  padding:20px 18px;box-shadow:var(--shadow-card);
}
.toc-box h4{
  font-size:12px;font-weight:700;letter-spacing:.1em;color:var(--text-3);
  margin-bottom:14px;text-transform:uppercase;
}
.toc-list{display:flex;flex-direction:column;gap:4px;}
.toc-link{
  display:block;font-size:13px;line-height:1.6;color:var(--text-2);
  padding:6px 10px 6px 12px;border-left:2px solid transparent;border-radius:0 8px 8px 0;
  transition:color var(--t),border-color var(--t),background var(--t);
}
.toc-link:hover{color:var(--text-1);background:rgba(255,255,255,.03);}
.toc-link.active{color:var(--brand-signal);border-left-color:var(--brand-signal);background:rgba(43,227,182,.06);}

/* ---------- 标签 & 尾部 ---------- */
.tag-row{display:flex;flex-wrap:wrap;align-items:center;gap:10px;margin-top:34px;padding-top:26px;border-top:1px solid var(--line);}
.tag-row .label{font-size:12px;font-weight:700;letter-spacing:.08em;color:var(--text-3);}
.tag{
  display:inline-flex;align-items:center;font-size:12px;font-weight:700;
  padding:6px 14px;border-radius:999px;border:1px solid var(--line);
  color:var(--text-2);background:rgba(255,255,255,.02);transition:var(--t);
}
.tag:hover{color:var(--brand-signal);border-color:var(--line-strong);}
.back-row{margin-top:28px;}

/* ---------- 相关推荐 ---------- */
.related-section{padding:64px 0 0;}
.section-head{
  display:flex;flex-wrap:wrap;align-items:flex-end;justify-content:space-between;
  gap:16px;margin-bottom:28px;
}
.section-head h2{font-size:28px;font-weight:800;letter-spacing:-.2px;}
.section-head .sub{font-size:14px;color:var(--text-3);margin-top:8px;}
.section-head .link-more{font-size:14px;font-weight:700;color:var(--brand-signal);}
.section-head .link-more:hover{color:#5CF0CA;}
.card-grid{display:grid;grid-template-columns:repeat(3,minmax(0,1fr));gap:24px;}
.post-card{
  display:flex;flex-direction:column;
  background:var(--bg-glass);border:1px solid var(--line);border-radius:var(--radius-lg);
  overflow:hidden;box-shadow:var(--shadow-card);
  transition:transform var(--t),border-color var(--t);
}
.post-card:hover{transform:translateY(-4px);border-color:var(--brand-signal-dim);}
.post-thumb{position:relative;aspect-ratio:16/9;overflow:hidden;background:var(--bg-2);}
.post-thumb img{width:100%;height:100%;object-fit:cover;transition:transform 320ms var(--ease);}
.post-card:hover .post-thumb img{transform:scale(1.02);}
.post-badge{
  position:absolute;top:12px;right:12px;z-index:2;
  font-size:11px;font-weight:700;letter-spacing:.05em;
  color:var(--brand-amber);background:rgba(6,10,20,.78);
  border:1px solid rgba(255,179,92,.4);border-radius:999px;padding:4px 10px;
}
.post-body{padding:20px 22px 22px;display:flex;flex-direction:column;flex:1;}
.post-body h3{
  font-size:18px;font-weight:700;line-height:1.5;color:var(--text-1);
  margin-bottom:10px;display:-webkit-box;-webkit-line-clamp:2;-webkit-box-orient:vertical;overflow:hidden;
}
.post-body p{
  font-size:14px;line-height:1.7;color:var(--text-2);margin-bottom:16px;
  display:-webkit-box;-webkit-line-clamp:3;-webkit-box-orient:vertical;overflow:hidden;
}
.post-foot{
  margin-top:auto;display:flex;align-items:center;justify-content:space-between;
  font-size:12px;color:var(--text-3);font-variant-numeric:tabular-nums;
}
.post-foot .arrow{color:var(--brand-signal);font-size:14px;transition:transform var(--t);}
.post-card:hover .post-foot .arrow{transform:translateX(4px);}

/* ---------- CTA ---------- */
.cta-section{padding:72px 0 8px;}
.cta-card{
  position:relative;overflow:hidden;
  background:linear-gradient(135deg, rgba(20,32,58,.78), rgba(11,18,36,.9));
  border:1px solid var(--line);border-radius:22px;box-shadow:var(--shadow-card);
  padding:48px;
  display:grid;grid-template-columns:1.15fr .85fr;gap:44px;align-items:center;
}
.cta-card::before{
  content:"";position:absolute;left:0;right:0;top:0;height:1px;
  background:linear-gradient(90deg,rgba(255,255,255,.2),transparent);
}
.cta-left h2{font-size:30px;font-weight:800;letter-spacing:-.2px;margin-bottom:16px;}
.cta-left p{color:var(--text-2);font-size:15px;margin-bottom:22px;max-width:520px;}
.check-list{list-style:none;padding:0;margin:0 0 18px;}
.check-list li{
  position:relative;padding-left:28px;margin-bottom:12px;font-size:15px;color:var(--text-2);
}
.check-list li::before{
  content:"";position:absolute;left:0;top:4px;width:18px;height:18px;border-radius:50%;
  background:var(--brand-signal-dim);border:1px solid var(--line-strong);
}
.check-list li::after{
  content:"";position:absolute;left:6px;top:8px;width:6px;height:10px;
  border-right:2px solid var(--brand-signal);border-bottom:2px solid var(--brand-signal);
  transform:rotate(40deg);
}
.cta-note{font-size:13px;color:var(--text-3);}
.cta-form{
  background:rgba(6,10,20,.55);border:1px solid var(--line);border-radius:var(--radius-lg);
  padding:24px;
}
.cta-form .field{margin-bottom:14px;}
.cta-form label{
  display:block;font-size:12px;font-weight:700;letter-spacing:.05em;
  color:var(--text-3);margin-bottom:8px;
}
.form-control,.cta-form input{
  width:100%;background:rgba(9,14,26,.9);border:1px solid var(--line);
  border-radius:var(--radius-sm);color:var(--text-1);font-size:15px;
  padding:13px 16px;line-height:1.4;transition:border-color var(--t),box-shadow var(--t),background var(--t);
}
.form-control::placeholder,.cta-form input::placeholder{color:var(--text-3);}
.form-control:focus,.cta-form input:focus{
  outline:none;background:rgba(9,14,26,1);
  border-color:var(--brand-signal);box-shadow:0 0 0 3px rgba(43,227,182,.16);
  color:var(--text-1);
}
.cta-form .btn{width:100%;margin-top:6px;}
.cta-form .fine{font-size:12px;color:var(--text-3);margin:12px 0 0;text-align:center;}

/* ---------- 空态 ---------- */
.empty-state{
  text-align:center;padding:64px 24px;border-radius:var(--radius-lg);
  background:var(--bg-glass);border:1px solid var(--line);
}
.empty-state .icon{
  width:56px;height:56px;margin:0 auto 18px;border-radius:50%;
  display:flex;align-items:center;justify-content:center;
  background:var(--brand-signal-dim);border:1px solid var(--line-strong);
  color:var(--brand-signal);
}
.empty-state h2{font-size:22px;font-weight:800;margin-bottom:10px;}
.empty-state p{font-size:15px;color:var(--text-2);margin-bottom:22px;}

/* ---------- Footer ---------- */
.site-footer{
  margin-top:96px;position:relative;
  border-top:1px solid var(--line);background:rgba(6,10,20,.86);
  padding:64px 0 28px;
}
.site-footer::before{
  content:"";position:absolute;left:0;right:0;top:-1px;height:1px;
  background:linear-gradient(90deg,transparent,var(--brand-signal),transparent);opacity:.55;
}
.footer-grid{
  display:grid;grid-template-columns:1.4fr .8fr .9fr 1fr;gap:40px;
}
.footer-brand p{font-size:14px;line-height:1.8;color:var(--text-2);margin:16px 0 20px;max-width:340px;}
.back-top{
  display:inline-flex;align-items:center;gap:6px;font-size:13px;font-weight:700;
  color:var(--text-2);border:1px solid var(--line);border-radius:999px;
  padding:8px 16px;transition:var(--t);
}
.back-top:hover{color:var(--brand-signal);border-color:var(--line-strong);transform:translateY(-2px);}
.footer-col h4{font-size:14px;font-weight:700;color:var(--text-1);margin-bottom:16px;letter-spacing:.04em;}
.footer-col ul{list-style:none;padding:0;margin:0;}
.footer-col li{margin-bottom:12px;font-size:14px;color:var(--text-2);line-height:1.6;}
.footer-col li a{display:inline-block;color:var(--text-2);font-size:14px;transition:var(--t);}
.footer-col li a:hover{color:var(--brand-signal);transform:translateX(2px);}
.footer-col small{display:block;font-size:12px;color:var(--text-3);margin-top:4px;line-height:1.5;}
.footer-bottom{
  margin-top:44px;padding-top:22px;border-top:1px solid var(--line);
  display:flex;flex-wrap:wrap;gap:12px;justify-content:space-between;
  font-size:13px;color:var(--text-3);
}

/* ---------- 响应式 ---------- */
@media (max-width:1399px){
  .article-layout{gap:40px;}
}
@media (max-width:1199px){
  .article-aside{display:none;}
  .article-layout{grid-template-columns:minmax(0,820px);}
}
@media (max-width:991px){
  .main-nav{
    position:fixed;inset:0;z-index:1100;
    flex-direction:column;align-items:flex-start;justify-content:flex-start;
    gap:8px;padding:92px 28px 32px;
    background:rgba(6,10,20,.97);
    -webkit-backdrop-filter:blur(16px);backdrop-filter:blur(16px);
    opacity:0;visibility:hidden;transform:translateY(-12px);
    transition:opacity var(--t),visibility var(--t),transform var(--t);
  }
  body.nav-open .main-nav{opacity:1;visibility:visible;transform:translateY(0);}
  .main-nav a{
    width:100%;font-size:16px;color:var(--text-1);padding:14px 0 14px 16px;
    border-left:3px solid transparent;
  }
  .main-nav a::after{display:none;}
  .main-nav a:hover,.main-nav a.active{
    color:var(--brand-signal);border-left-color:var(--brand-signal);
    box-shadow:inset 14px 0 24px -18px var(--brand-signal);
  }
  .nav-toggle{display:inline-flex;position:relative;z-index:1200;}
  body.nav-open .nav-actions .btn-signal{display:none;}
  .article-hero h1{font-size:30px;}
  .article-card{padding:28px 24px 32px;}
  .cta-card{grid-template-columns:1fr;padding:34px 28px;gap:28px;}
  .card-grid{grid-template-columns:repeat(2,minmax(0,1fr));}
  .footer-grid{grid-template-columns:1fr 1fr;gap:32px;}
  .section-head h2{font-size:24px;}
}
@media (max-width:767px){
  .wrap{padding:0 18px;}
  .article-hero h1{font-size:26px;line-height:1.4;}
  .article-body{font-size:16px;line-height:1.9;}
  .article-body h2{font-size:21px;margin-top:36px;}
  .article-body h3{font-size:18px;}
  .card-grid{grid-template-columns:1fr;}
  .cta-left h2{font-size:24px;}
  .btn{width:100%;}
  .nav-actions .btn{width:auto;}
  .article-section{padding:24px 0 0;}
  .related-section{padding:48px 0 0;}
  .cta-section{padding:52px 0 0;}
  .site-footer{margin-top:64px;padding:48px 0 24px;}
  .footer-grid{grid-template-columns:1fr;gap:28px;}
  .footer-bottom{flex-direction:column;gap:8px;}
  .crumbs{padding-top:18px;font-size:12px;}
  .crumbs .current{max-width:180px;}
}
@media (max-width:575px){
  .article-hero h1{font-size:23px;}
  .article-card{padding:22px 18px 26px;border-radius:var(--radius-md);}
  .cta-card{padding:26px 20px;border-radius:var(--radius-md);}
  .meta-row{font-size:12px;gap:8px;}
  .section-head{flex-direction:column;align-items:flex-start;}
}
@media (prefers-reduced-motion:reduce){
  *,*::before,*::after{animation-duration:.001ms !important;transition-duration:.001ms !important;}
  html{scroll-behavior:auto;}
  .post-card:hover,.btn:hover,.btn-signal:hover{transform:none;}
}

/* roulang page: category1 */
:root{
  --bg-0:#060A14;--bg-1:#0B1224;--bg-2:#111A30;--bg-glass:rgba(20,32,58,.55);
  --brand-signal:#2BE3B6;--brand-signal-dim:rgba(43,227,182,.16);
  --brand-amber:#FFB35C;--brand-blue:#3D6BFF;
  --line:rgba(122,152,220,.16);--line-strong:rgba(43,227,182,.42);
  --text-1:#E9EFFB;--text-2:#A7B4CC;--text-3:#6C7A96;--danger:#FF6B7A;
  --r-lg:18px;--r-md:12px;--r-pill:999px;
  --ease:cubic-bezier(.2,.7,.3,1);
  --shadow-card:0 18px 44px rgba(0,0,0,.42);
  --bs-body-bg:#060A14;--bs-body-color:#E9EFFB;--bs-primary:#2BE3B6;
  --bs-border-color:rgba(122,152,220,.16);--bs-link-color:#2BE3B6;--bs-link-hover-color:#4BF0C6;
  --bs-font-sans-serif:'PingFang SC','Microsoft YaHei','Noto Sans SC',system-ui,sans-serif;
}
*,*::before,*::after{box-sizing:border-box;}
html{scroll-behavior:smooth;}
body{
  margin:0;padding:0;color:var(--text-1);
  font-family:'PingFang SC','Microsoft YaHei','Noto Sans SC',system-ui,sans-serif;
  font-size:16px;line-height:1.75;
  background-color:var(--bg-0);
  background-image:
    radial-gradient(720px 520px at 88% -6%, rgba(43,227,182,.10), transparent 70%),
    radial-gradient(680px 560px at -6% 18%, rgba(61,107,255,.13), transparent 70%),
    linear-gradient(rgba(122,152,220,.045) 1px, transparent 1px),
    linear-gradient(90deg, rgba(122,152,220,.045) 1px, transparent 1px);
  background-size:auto,auto,32px 32px,32px 32px;
  background-repeat:no-repeat,no-repeat,repeat,repeat;
  background-attachment:fixed,fixed,fixed,fixed;
  -webkit-font-smoothing:antialiased;
}
img{max-width:100%;display:block;}
a{color:var(--brand-signal);text-decoration:none;transition:color 180ms var(--ease);}
a:hover{color:#4BF0C6;}
h1,h2,h3,h4{margin:0;color:var(--text-1);letter-spacing:-.2px;}
p{margin:0 0 16px;}
ul{margin:0;padding:0;list-style:none;}
:focus-visible{outline:2px solid var(--brand-signal);outline-offset:3px;border-radius:6px;}
.wrap{width:100%;max-width:1200px;margin:0 auto;padding:0 24px;}

/* ---------- 按钮 ---------- */
.btn{
  display:inline-flex;align-items:center;justify-content:center;gap:8px;
  font-family:inherit;font-size:15px;font-weight:700;line-height:1;
  padding:14px 28px;border-radius:var(--r-md);border:1px solid transparent;
  cursor:pointer;transition:transform 180ms var(--ease),background 180ms var(--ease),border-color 180ms var(--ease),color 180ms var(--ease),box-shadow 180ms var(--ease);
}
.btn-signal{background:var(--brand-signal);color:#04140F;box-shadow:0 0 22px rgba(43,227,182,.30);}
.btn-signal:hover{background:#4BF0C6;color:#04140F;transform:translateY(-2px);box-shadow:0 6px 26px rgba(43,227,182,.35);}
.btn-signal:active{transform:translateY(0);}
.btn-ghost{background:rgba(255,255,255,.03);border-color:var(--line);color:var(--text-1);}
.btn-ghost:hover{border-color:var(--line-strong);color:var(--brand-signal);transform:translateY(-2px);}
.btn-sm{padding:11px 20px;font-size:14px;}
.btn-block{width:100%;}

/* ---------- 顶部导航 ---------- */
.site-header{
  position:sticky;top:0;z-index:1030;
  background:rgba(6,10,20,.72);
  backdrop-filter:blur(14px);-webkit-backdrop-filter:blur(14px);
  border-bottom:1px solid var(--line);
}
.site-header::after{
  content:"";position:absolute;left:0;right:0;bottom:-1px;height:1px;
  background:linear-gradient(90deg,transparent,rgba(43,227,182,.42),transparent);
  opacity:.5;
}
.nav-wrap{display:flex;align-items:center;gap:20px;height:72px;}
.brand{display:inline-flex;align-items:center;gap:10px;color:var(--text-1);font-weight:800;font-size:17px;letter-spacing:-.2px;}
.brand:hover{color:var(--text-1);}
.brand-mark{display:inline-flex;width:32px;height:32px;align-items:center;justify-content:center;border-radius:10px;background:rgba(43,227,182,.10);border:1px solid var(--line);}
.brand-text{white-space:nowrap;}
.main-nav{display:flex;align-items:center;gap:4px;margin-left:auto;}
.main-nav a{
  position:relative;display:block;padding:9px 13px;border-radius:10px;
  font-size:14px;color:var(--text-2);transition:color 180ms var(--ease),background 180ms var(--ease);
}
.main-nav a:hover{color:var(--text-1);background:rgba(255,255,255,.04);}
.main-nav a.active{color:var(--brand-signal);}
.main-nav a.active::after{
  content:"";position:absolute;left:50%;bottom:2px;transform:translateX(-50%);
  width:22px;height:2px;border-radius:2px;background:var(--brand-signal);
  box-shadow:0 0 10px rgba(43,227,182,.85);
}
.nav-actions{display:flex;align-items:center;gap:10px;}
.nav-toggle{
  display:none;position:relative;z-index:1040;
  width:42px;height:42px;align-items:center;justify-content:center;
  background:rgba(255,255,255,.04);border:1px solid var(--line);border-radius:12px;
  color:var(--text-1);cursor:pointer;transition:border-color 180ms var(--ease),color 180ms var(--ease);
}
.nav-toggle:hover{border-color:var(--line-strong);color:var(--brand-signal);}
.nav-toggle svg{width:20px;height:20px;}
.nav-toggle .ico-close{display:none;}

/* ---------- 面包屑 ---------- */
.crumbs{display:flex;align-items:center;gap:8px;font-size:13px;color:var(--text-3);margin-bottom:22px;flex-wrap:wrap;}
.crumbs a{color:var(--text-3);}
.crumbs a:hover{color:var(--brand-signal);}
.crumbs .sep{color:rgba(122,152,220,.45);}
.crumbs .cur{color:var(--text-1);}

/* ---------- 矮版 Hero ---------- */
.page-hero{
  position:relative;overflow:hidden;
  padding:56px 0 60px;
  border-bottom:1px solid var(--line);
  background-image:linear-gradient(96deg,rgba(6,10,20,.95) 0%,rgba(6,10,20,.88) 48%,rgba(6,10,20,.78) 100%),url('/assets/images/backpic/back-1.webp');
  background-size:cover;background-position:center right;
}
.page-hero::before{
  content:"";position:absolute;right:-120px;top:-140px;width:460px;height:460px;border-radius:50%;
  background:radial-gradient(circle,rgba(43,227,182,.16),transparent 68%);pointer-events:none;
}
.hero-badge{
  display:inline-flex;align-items:center;gap:8px;
  padding:7px 14px;border-radius:var(--r-pill);
  background:var(--brand-signal-dim);border:1px solid rgba(43,227,182,.30);
  font-size:12px;font-weight:700;letter-spacing:.08em;color:var(--brand-signal);
  margin-bottom:20px;
}
.hero-badge .dot{width:6px;height:6px;border-radius:50%;background:var(--brand-signal);box-shadow:0 0 10px rgba(43,227,182,.9);animation:pulse 2.6s var(--ease) infinite;}
@keyframes pulse{0%,100%{opacity:1;transform:scale(1);}50%{opacity:.45;transform:scale(.8);}}
.page-hero h1{font-size:36px;font-weight:900;line-height:1.24;letter-spacing:-.5px;max-width:820px;}
.hero-sub{margin-top:18px;max-width:720px;font-size:16px;color:var(--text-2);line-height:1.85;}
.hero-actions{display:flex;flex-wrap:wrap;gap:14px;margin-top:30px;}
.hero-points{display:flex;flex-wrap:wrap;gap:10px 26px;margin-top:28px;}
.hero-points li{display:inline-flex;align-items:center;gap:8px;font-size:13px;color:var(--text-2);}
.hero-points svg{width:16px;height:16px;color:var(--brand-signal);flex:none;}

/* ---------- 通用板块 ---------- */
.section{padding:88px 0;}
.section-tight{padding:64px 0;}
.section-head{max-width:760px;margin-bottom:44px;}
.section-head .kicker{
  display:inline-block;font-size:12px;font-weight:700;letter-spacing:.14em;
  color:var(--brand-amber);margin-bottom:12px;
}
.section-head h2{font-size:30px;font-weight:800;line-height:1.32;}
.section-head p{margin-top:14px;color:var(--text-2);font-size:16px;line-height:1.85;}

/* ---------- 导语带 ---------- */
.lead-band{
  background:var(--bg-glass);border:1px solid var(--line);border-radius:var(--r-lg);
  padding:30px 32px;box-shadow:var(--shadow-card);
  display:grid;grid-template-columns:minmax(0,1fr) auto;gap:26px;align-items:center;
  position:relative;overflow:hidden;
}
.lead-band::before{
  content:"";position:absolute;left:0;top:0;right:0;height:1px;
  background:linear-gradient(90deg,rgba(255,255,255,.18),transparent);
}
.lead-band p{margin:0;color:var(--text-2);font-size:16px;line-height:1.9;}
.lead-band p strong{color:var(--text-1);font-weight:700;}
.lead-tag{
  display:inline-flex;align-items:center;gap:8px;white-space:nowrap;
  padding:10px 16px;border-radius:var(--r-pill);
  border:1px solid var(--line);background:rgba(255,255,255,.03);
  font-size:13px;font-weight:700;color:var(--brand-amber);
}

/* ---------- 信息卡网格 ---------- */
.info-grid{display:grid;grid-template-columns:repeat(3,minmax(0,1fr));gap:24px;}
.info-card{
  position:relative;background:var(--bg-glass);border:1px solid var(--line);
  border-radius:var(--r-lg);padding:28px 26px;box-shadow:var(--shadow-card);
  transition:transform 180ms var(--ease),border-color 180ms var(--ease);
  overflow:hidden;
}
.info-card::before{
  content:"";position:absolute;left:0;top:0;right:0;height:1px;
  background:linear-gradient(90deg,rgba(255,255,255,.16),transparent);
}
.info-card:hover{transform:translateY(-4px);border-color:var(--brand-signal-dim);}
.info-ico{
  width:46px;height:46px;border-radius:14px;display:inline-flex;align-items:center;justify-content:center;
  background:rgba(43,227,182,.10);border:1px solid rgba(43,227,182,.24);color:var(--brand-signal);
  margin-bottom:20px;
}
.info-ico svg{width:22px;height:22px;}
.info-card h3{font-size:19px;font-weight:700;margin-bottom:12px;}
.info-card p{color:var(--text-2);font-size:15px;line-height:1.8;margin-bottom:0;}
.card-num{
  position:absolute;right:22px;top:22px;font-size:13px;font-weight:700;
  color:var(--text-3);letter-spacing:.08em;font-variant-numeric:tabular-nums;
}

/* ---------- 横向要点清单 ---------- */
.points-panel{
  background:var(--bg-1);border:1px solid var(--line);border-radius:var(--r-lg);
  padding:34px 36px;box-shadow:var(--shadow-card);
}
.points-panel h2{font-size:26px;font-weight:800;margin-bottom:8px;}
.points-panel .sub{color:var(--text-2);font-size:15px;margin-bottom:26px;}
.points-list{display:grid;grid-template-columns:repeat(2,minmax(0,1fr));gap:16px 40px;}
.points-list li{
  position:relative;padding-left:16px;color:var(--text-2);font-size:15px;line-height:1.8;
  border-left:3px solid var(--brand-signal);
}
.points-list li b{color:var(--text-1);font-weight:700;}

/* ---------- 站内跳转 ---------- */
.jump-grid{display:grid;grid-template-columns:repeat(2,minmax(0,1fr));gap:24px;}
.jump-card{
  display:flex;gap:22px;align-items:center;
  background:var(--bg-glass);border:1px solid var(--line);border-radius:var(--r-lg);
  padding:20px;box-shadow:var(--shadow-card);
  transition:transform 180ms var(--ease),border-color 180ms var(--ease);
}
.jump-card:hover{transform:translateY(-4px);border-color:var(--brand-signal-dim);}
.jump-card .thumb{width:150px;flex:none;aspect-ratio:16/10;border-radius:14px;overflow:hidden;position:relative;}
.jump-card .thumb img{width:100%;height:100%;object-fit:cover;}
.jump-card .thumb::after{
  content:"";position:absolute;inset:0;
  background:linear-gradient(180deg,rgba(6,10,20,.05),rgba(6,10,20,.55));
}
.jump-card h3{font-size:18px;font-weight:700;margin-bottom:8px;color:var(--text-1);}
.jump-card p{font-size:14px;color:var(--text-2);margin:0 0 12px;line-height:1.7;}
.jump-link{display:inline-flex;align-items:center;gap:6px;font-size:14px;font-weight:700;color:var(--brand-signal);}
.jump-link svg{width:15px;height:15px;transition:transform 180ms var(--ease);}
.jump-card:hover .jump-link svg{transform:translateX(4px);}

/* ---------- CTA ---------- */
.cta-band{
  position:relative;overflow:hidden;
  background:linear-gradient(120deg,rgba(20,32,58,.82),rgba(11,18,36,.92));
  border:1px solid var(--line);border-radius:22px;
  padding:48px 48px;box-shadow:var(--shadow-card);
  display:grid;grid-template-columns:1.15fr .85fr;gap:48px;align-items:center;
}
.cta-band::before{
  content:"";position:absolute;left:-100px;bottom:-140px;width:380px;height:380px;border-radius:50%;
  background:radial-gradient(circle,rgba(43,227,182,.16),transparent 68%);pointer-events:none;
}
.cta-band h2{font-size:30px;font-weight:800;line-height:1.32;margin-bottom:16px;}
.cta-band .lead{color:var(--text-2);font-size:15px;margin-bottom:22px;max-width:460px;}
.cta-list{display:grid;gap:12px;margin-bottom:20px;}
.cta-list li{display:flex;align-items:flex-start;gap:10px;font-size:15px;color:var(--text-2);}
.cta-list svg{width:18px;height:18px;color:var(--brand-signal);flex:none;margin-top:3px;}
.cta-note{font-size:13px;color:var(--text-3);}
.cta-form{position:relative;display:grid;gap:14px;background:rgba(6,10,20,.55);border:1px solid var(--line);border-radius:var(--r-lg);padding:26px;}
.cta-form h3{font-size:16px;font-weight:700;margin-bottom:4px;}
.form-control{
  width:100%;font-family:inherit;font-size:15px;color:var(--text-1);
  background:rgba(6,10,20,.65);border:1px solid var(--line);border-radius:12px;
  padding:13px 16px;transition:border-color 180ms var(--ease),box-shadow 180ms var(--ease),background 180ms var(--ease);
}
.form-control::placeholder{color:var(--text-3);}
.form-control:focus{
  outline:none;background:rgba(6,10,20,.85);color:var(--text-1);
  border-color:var(--brand-signal);box-shadow:0 0 0 3px rgba(43,227,182,.14);
}
.form-hint{font-size:12px;color:var(--text-3);line-height:1.7;margin:0;}

/* ---------- 页脚 ---------- */
.site-footer{position:relative;margin-top:0;background:var(--bg-1);border-top:1px solid var(--line);padding:64px 0 0;}
.site-footer::before{
  content:"";position:absolute;left:0;right:0;top:-1px;height:1px;
  background:linear-gradient(90deg,transparent,rgba(43,227,182,.55),transparent);
}
.footer-grid{display:grid;grid-template-columns:1.6fr 1fr 1fr 1.3fr;gap:40px;padding-bottom:48px;}
.footer-brand p{color:var(--text-2);font-size:14px;line-height:1.85;margin:16px 0 20px;max-width:300px;}
.back-top{
  display:inline-flex;align-items:center;gap:6px;font-size:13px;color:var(--text-2);
  border:1px solid var(--line);border-radius:var(--r-pill);padding:8px 16px;
  transition:color 180ms var(--ease),border-color 180ms var(--ease);
}
.back-top:hover{color:var(--brand-signal);border-color:var(--line-strong);}
.footer-col h4{font-size:14px;font-weight:700;color:var(--text-1);margin-bottom:16px;letter-spacing:.02em;}
.footer-col ul{display:grid;gap:11px;}
.footer-col li{font-size:14px;color:var(--text-2);line-height:1.6;}
.footer-col a{font-size:14px;color:var(--text-2);display:inline-block;transition:color 180ms var(--ease),transform 180ms var(--ease);}
.footer-col a:hover{color:var(--brand-signal);transform:translateX(2px);}
.footer-col small{display:block;font-size:12px;color:var(--text-3);margin-top:3px;}
.footer-bottom{
  display:flex;justify-content:space-between;gap:16px;flex-wrap:wrap;
  border-top:1px solid var(--line);padding:22px 0 28px;
  font-size:13px;color:var(--text-3);
}

/* ---------- 响应式 ---------- */
@media (max-width:1199px){
  .page-hero h1{font-size:34px;}
  .cta-band{padding:40px 36px;gap:36px;}
}
@media (max-width:991px){
  .nav-toggle{display:inline-flex;}
  .main-nav{
    position:fixed;inset:72px 0 0;z-index:1020;
    flex-direction:column;align-items:stretch;gap:4px;margin:0;
    padding:26px 24px 40px;
    background:rgba(6,10,20,.975);
    backdrop-filter:blur(18px);-webkit-backdrop-filter:blur(18px);
    border-top:1px solid var(--line);
    opacity:0;visibility:hidden;transform:translateY(-10px);
    transition:opacity 180ms var(--ease),transform 180ms var(--ease),visibility 180ms var(--ease);
    overflow-y:auto;
  }
  .main-nav a{font-size:16px;padding:14px 16px;border-left:3px solid transparent;border-radius:10px;}
  .main-nav a.active{border-left-color:var(--brand-signal);background:rgba(43,227,182,.07);}
  .main-nav a.active::after{display:none;}
  body.nav-open .main-nav{opacity:1;visibility:visible;transform:translateY(0);}
  body.nav-open .nav-toggle .ico-menu{display:none;}
  body.nav-open .nav-toggle .ico-close{display:block;}
  body.nav-open{overflow:hidden;}
  .nav-actions{margin-left:auto;}
  .nav-actions .btn-signal{display:none;}
  .lead-band{grid-template-columns:1fr;gap:18px;}
  .info-grid{grid-template-columns:repeat(2,minmax(0,1fr));}
  .points-list{grid-template-columns:1fr;}
  .jump-grid{grid-template-columns:1fr;}
  .cta-band{grid-template-columns:1fr;padding:36px 28px;}
  .section{padding:72px 0;}
  .footer-grid{grid-template-columns:1fr 1fr;gap:32px;}
  .page-hero{padding:44px 0 48px;}
}
@media (max-width:767px){
  .wrap{padding:0 18px;}
  .page-hero h1{font-size:27px;line-height:1.3;}
  .hero-sub{font-size:15px;}
  .hero-actions{gap:12px;}
  .hero-actions .btn{width:100%;}
  .section{padding:56px 0;}
  .section-head h2{font-size:24px;}
  .info-grid{grid-template-columns:1fr;}
  .points-panel{padding:26px 22px;}
  .points-panel h2{font-size:22px;}
  .lead-band{padding:24px 22px;}
  .jump-card{flex-direction:column;align-items:flex-start;}
  .jump-card .thumb{width:100%;}
  .cta-band h2{font-size:24px;}
  .cta-form{padding:22px;}
  .footer-grid{grid-template-columns:1fr;gap:28px;}
  .footer-bottom{flex-direction:column;gap:8px;}
  .site-footer{padding:48px 0 0;}
  .section-tight{padding:44px 0;}
}
@media (max-width:520px){
  .page-hero h1{font-size:24px;}
  .hero-points{gap:8px 18px;}
  .brand-text{font-size:15px;}
}
@media (prefers-reduced-motion:reduce){
  *,*::before,*::after{transition-duration:.01ms !important;animation-duration:.01ms !important;animation-iteration-count:1 !important;}
  .info-card:hover,.jump-card:hover,.btn:hover{transform:none;}
  html{scroll-behavior:auto;}
}

/* roulang page: category3 */
:root{
  --bg-0:#060A14;
  --bg-1:#0B1224;
  --bg-2:#111A30;
  --bg-glass:rgba(20,32,58,.55);
  --brand-signal:#2BE3B6;
  --brand-signal-dim:rgba(43,227,182,.16);
  --brand-amber:#FFB35C;
  --brand-blue:#3D6BFF;
  --line:rgba(122,152,220,.16);
  --line-soft:rgba(122,152,220,.10);
  --line-strong:rgba(43,227,182,.42);
  --text-1:#E9EFFB;
  --text-2:#A7B4CC;
  --text-3:#6C7A96;
  --danger:#FF6B7A;
  --radius-lg:18px;
  --radius-sm:12px;
  --radius-pill:999px;
  --shadow-card:0 18px 44px rgba(0,0,0,.42);
  --ease:cubic-bezier(.2,.7,.3,1);

  --bs-body-bg:var(--bg-0);
  --bs-body-color:var(--text-1);
  --bs-primary:var(--brand-signal);
  --bs-border-color:var(--line);
  --bs-link-color:var(--brand-signal);
  --bs-link-hover-color:var(--brand-signal);
  --bs-body-font-family:'PingFang SC','Microsoft YaHei','Noto Sans SC',system-ui,-apple-system,sans-serif;
  --bs-accordion-bg:transparent;
  --bs-accordion-border-width:0;
  --bs-accordion-btn-focus-box-shadow:none;
  --bs-accordion-active-bg:transparent;
  --bs-accordion-active-color:var(--text-1);
  --bs-accordion-btn-color:var(--text-1);
  --bs-accordion-body-padding-y:0;
}

*{box-sizing:border-box;}

html{scroll-behavior:smooth;}

body{
  margin:0;
  font-family:'PingFang SC','Microsoft YaHei','Noto Sans SC',system-ui,-apple-system,sans-serif;
  font-size:16px;
  line-height:1.85;
  color:var(--text-1);
  background-color:var(--bg-0);
  background-image:
    radial-gradient(720px 720px at 84% -10%, rgba(43,227,182,.10), transparent 70%),
    radial-gradient(680px 680px at 4% 46%, rgba(61,107,255,.12), transparent 72%),
    linear-gradient(rgba(122,152,220,.04) 1px, transparent 1px),
    linear-gradient(90deg, rgba(122,152,220,.04) 1px, transparent 1px);
  background-size:auto, auto, 32px 32px, 32px 32px;
  background-repeat:no-repeat, no-repeat, repeat, repeat;
  -webkit-font-smoothing:antialiased;
}

img{max-width:100%;display:block;height:auto;}
a{color:var(--brand-signal);text-decoration:none;transition:color 180ms var(--ease);}
a:hover{color:var(--brand-signal);}
p{margin:0 0 16px;color:var(--text-2);}
h1,h2,h3,h4{margin:0;color:var(--text-1);letter-spacing:-.2px;}
ul{margin:0;padding:0;list-style:none;}
button{font-family:inherit;}

.wrap{
  width:100%;
  max-width:1200px;
  margin:0 auto;
  padding:0 24px;
}

/* ---------- header ---------- */
.site-header{
  position:sticky;
  top:0;
  z-index:1000;
  background:rgba(6,10,20,.72);
  -webkit-backdrop-filter:blur(14px);
  backdrop-filter:blur(14px);
  border-bottom:1px solid var(--line);
  transition:border-color 180ms var(--ease), background 180ms var(--ease);
}
.site-header.is-scrolled{
  border-bottom-color:var(--line-strong);
  background:rgba(6,10,20,.88);
}
.nav-wrap{
  display:flex;
  align-items:center;
  justify-content:space-between;
  gap:24px;
  height:72px;
}
.brand{
  display:inline-flex;
  align-items:center;
  gap:10px;
  color:var(--text-1);
  font-weight:800;
  font-size:17px;
  letter-spacing:.2px;
  white-space:nowrap;
}
.brand:hover{color:var(--text-1);}
.brand-mark{
  display:inline-flex;
  align-items:center;
  justify-content:center;
  width:34px;
  height:34px;
  border-radius:10px;
  background:rgba(43,227,182,.08);
  border:1px solid var(--line);
  flex:0 0 auto;
}
.main-nav{
  display:flex;
  align-items:center;
  gap:30px;
}
.main-nav a{
  position:relative;
  font-size:14px;
  color:var(--text-2);
  padding:6px 0;
  transition:color 180ms var(--ease);
}
.main-nav a::after{
  content:"";
  position:absolute;
  left:50%;
  bottom:-2px;
  width:0;
  height:2px;
  border-radius:2px;
  background:var(--brand-signal);
  transform:translateX(-50%);
  transition:width 180ms var(--ease);
  box-shadow:0 0 10px rgba(43,227,182,.55);
}
.main-nav a:hover{color:var(--text-1);}
.main-nav a.active{color:var(--brand-signal);}
.main-nav a.active::after{width:22px;}

.nav-actions{display:flex;align-items:center;gap:14px;}
.nav-toggle{
  display:none;
  width:40px;
  height:40px;
  align-items:center;
  justify-content:center;
  border-radius:10px;
  border:1px solid var(--line);
  background:rgba(20,32,58,.6);
  color:var(--text-1);
  cursor:pointer;
  transition:border-color 180ms var(--ease), color 180ms var(--ease);
}
.nav-toggle:hover{border-color:var(--line-strong);color:var(--brand-signal);}
.nav-toggle svg{width:20px;height:20px;}

/* ---------- buttons ---------- */
.btn-signal,
.btn-ghost{
  display:inline-flex;
  align-items:center;
  justify-content:center;
  gap:8px;
  font-size:15px;
  font-weight:700;
  line-height:1;
  padding:14px 28px;
  border-radius:var(--radius-sm);
  border:1px solid transparent;
  cursor:pointer;
  transition:transform 180ms var(--ease), box-shadow 180ms var(--ease), background 180ms var(--ease), color 180ms var(--ease), border-color 180ms var(--ease);
}
.btn-signal{
  background:var(--brand-signal);
  color:#04140F;
  box-shadow:0 0 22px rgba(43,227,182,.30);
}
.btn-signal:hover{
  color:#04140F;
  background:#4DF0C6;
  transform:translateY(-2px);
  box-shadow:0 0 26px rgba(43,227,182,.42);
}
.btn-signal:active{transform:translateY(1px);}
.btn-ghost{
  background:transparent;
  border-color:var(--line);
  color:var(--text-1);
}
.btn-ghost:hover{
  color:var(--brand-signal);
  border-color:var(--line-strong);
  transform:translateY(-2px);
}
.btn-ghost:active{transform:translateY(1px);}
.btn-signal:focus-visible,
.btn-ghost:focus-visible,
a:focus-visible,
.nav-toggle:focus-visible,
.accordion-button:focus-visible{
  outline:2px solid var(--brand-signal);
  outline-offset:3px;
}
.btn-sm{padding:11px 20px;font-size:14px;}

/* ---------- hero ---------- */
.cat-hero{
  position:relative;
  overflow:hidden;
  border-bottom:1px solid var(--line-soft);
}
.cat-hero .hero-bg{
  position:absolute;
  inset:0;
  background-image:url('/assets/images/backpic/back-2.png');
  background-size:cover;
  background-position:center;
  opacity:.34;
}
.cat-hero .hero-mask{
  position:absolute;
  inset:0;
  background:linear-gradient(100deg, rgba(6,10,20,.97) 0%, rgba(6,10,20,.84) 52%, rgba(11,18,36,.92) 100%);
}
.cat-hero .wrap{
  position:relative;
  z-index:2;
  padding-top:56px;
  padding-bottom:60px;
}
.crumb{
  display:flex;
  flex-wrap:wrap;
  align-items:center;
  gap:8px;
  font-size:13px;
  color:var(--text-3);
  margin-bottom:20px;
}
.crumb a{color:var(--text-3);}
.crumb a:hover{color:var(--brand-signal);}
.crumb .sep{color:var(--text-3);opacity:.6;}
.crumb .cur{color:var(--text-1);}
.hero-badge{
  display:inline-flex;
  align-items:center;
  gap:8px;
  font-size:12px;
  font-weight:700;
  letter-spacing:.08em;
  color:var(--brand-signal);
  background:var(--brand-signal-dim);
  border:1px solid var(--line-strong);
  border-radius:var(--radius-pill);
  padding:6px 14px;
  margin-bottom:20px;
}
.hero-badge .dot{
  width:7px;height:7px;border-radius:50%;
  background:var(--brand-signal);
  box-shadow:0 0 10px rgba(43,227,182,.75);
}
.cat-hero h1{
  font-size:36px;
  font-weight:800;
  line-height:1.22;
  letter-spacing:-.4px;
  max-width:820px;
}
.cat-hero .hero-lead{
  margin-top:18px;
  max-width:760px;
  font-size:16px;
  line-height:1.85;
  color:var(--text-2);
}
.cat-hero .hero-lead strong{color:var(--text-1);font-weight:700;}

/* ---------- section base ---------- */
.section{padding:96px 0;}
.section-tight{padding:72px 0;}
.section-head{
  max-width:760px;
  margin-bottom:44px;
}
.eyebrow{
  display:inline-flex;
  align-items:center;
  gap:10px;
  font-size:12px;
  font-weight:700;
  letter-spacing:.08em;
  color:var(--brand-amber);
  margin-bottom:14px;
}
.eyebrow::before{
  content:"";
  width:22px;
  height:2px;
  border-radius:2px;
  background:var(--brand-amber);
  opacity:.75;
}
.section-head h2{
  font-size:30px;
  font-weight:800;
  line-height:1.3;
  margin-bottom:14px;
}
.section-head p{
  font-size:16px;
  color:var(--text-2);
  margin:0;
}

/* ---------- compare card ---------- */
.compare-card{
  display:grid;
  grid-template-columns:1fr 1fr;
  background:var(--bg-glass);
  border:1px solid var(--line);
  border-radius:var(--radius-lg);
  box-shadow:var(--shadow-card);
  overflow:hidden;
  position:relative;
}
.compare-card::before{
  content:"";
  position:absolute;
  top:0;left:0;right:0;
  height:1px;
  background:linear-gradient(90deg, rgba(255,255,255,.18), rgba(255,255,255,0));
}
.compare-col{padding:32px 30px 30px;}
.compare-col + .compare-col{border-left:1px solid var(--line-soft);}
.compare-col h3{
  display:flex;
  align-items:center;
  gap:10px;
  font-size:19px;
  font-weight:700;
  margin-bottom:8px;
}
.compare-col .col-tag{
  font-size:12px;
  font-weight:700;
  letter-spacing:.08em;
  padding:3px 10px;
  border-radius:var(--radius-pill);
  border:1px solid var(--line-strong);
  color:var(--brand-signal);
  background:var(--brand-signal-dim);
}
.compare-col.warn .col-tag{
  color:var(--brand-amber);
  border-color:rgba(255,179,92,.36);
  background:rgba(255,179,92,.12);
}
.compare-col .col-desc{
  font-size:14px;
  color:var(--text-3);
  margin:0 0 20px;
  line-height:1.7;
}
.check-list{display:flex;flex-direction:column;gap:14px;}
.check-list li{
  display:flex;
  gap:12px;
  font-size:15px;
  line-height:1.75;
  color:var(--text-2);
}
.check-list li .ico{
  flex:0 0 auto;
  width:22px;
  height:22px;
  margin-top:4px;
  border-radius:50%;
  display:inline-flex;
  align-items:center;
  justify-content:center;
  background:var(--brand-signal-dim);
  color:var(--brand-signal);
  font-size:12px;
  font-weight:800;
}
.compare-col.warn .check-list li .ico{
  background:rgba(255,179,92,.14);
  color:var(--brand-amber);
}
.check-list li b{color:var(--text-1);font-weight:700;}

/* ---------- self check ---------- */
.selfcheck{
  display:grid;
  grid-template-columns:1.02fr 1fr;
  gap:48px;
  align-items:center;
}
.selfcheck-media{
  position:relative;
  border-radius:14px;
  overflow:hidden;
  border:1px solid var(--line);
  box-shadow:var(--shadow-card);
}
.selfcheck-media img{
  width:100%;
  aspect-ratio:16/10;
  object-fit:cover;
}
.selfcheck-media::after{
  content:"";
  position:absolute;
  inset:0;
  background:linear-gradient(160deg, rgba(6,10,20,.10) 0%, rgba(6,10,20,.62) 100%);
}
.selfcheck-media .media-tag{
  position:absolute;
  left:18px;
  bottom:16px;
  z-index:2;
  font-size:12px;
  font-weight:700;
  letter-spacing:.08em;
  color:#04140F;
  background:var(--brand-signal);
  border-radius:var(--radius-pill);
  padding:5px 13px;
}
.selfcheck-body h2{
  font-size:28px;
  font-weight:800;
  line-height:1.35;
  margin-bottom:16px;
}
.selfcheck-body > p{
  font-size:16px;
  color:var(--text-2);
  margin-bottom:24px;
}
.step-list{display:flex;flex-direction:column;gap:18px;}
.step-list li{
  display:flex;
  gap:16px;
  padding:16px 18px;
  border-radius:14px;
  background:rgba(17,26,48,.55);
  border:1px solid var(--line);
  transition:border-color 180ms var(--ease), transform 180ms var(--ease);
}
.step-list li:hover{border-color:var(--line-strong);transform:translateY(-2px);}
.step-list .num{
  flex:0 0 auto;
  font-size:15px;
  font-weight:800;
  color:var(--brand-signal);
  font-variant-numeric:tabular-nums;
  letter-spacing:.04em;
  padding-top:2px;
}
.step-list h3{
  font-size:16px;
  font-weight:700;
  margin-bottom:4px;
}
.step-list p{
  font-size:14px;
  line-height:1.7;
  color:var(--text-2);
  margin:0;
}

/* ---------- faq ---------- */
.faq-wrap{max-width:900px;}
.accordion-item{
  background:var(--bg-glass);
  border:1px solid var(--line);
  border-radius:14px;
  margin-bottom:12px;
  overflow:hidden;
  transition:border-color 180ms var(--ease), box-shadow 180ms var(--ease);
}
.accordion-item:has(.accordion-button:not(.collapsed)){
  border-color:var(--line-strong);
  box-shadow:0 0 0 1px rgba(43,227,182,.12);
}
.accordion-button{
  display:flex;
  align-items:center;
  width:100%;
  padding:18px 22px 18px 62px;
  position:relative;
  background:transparent;
  color:var(--text-1);
  font-size:16px;
  font-weight:700;
  line-height:1.6;
  border:0;
  border-radius:14px;
  text-align:left;
  box-shadow:none;
}
.accordion-button::before{
  content:"?";
  position:absolute;
  left:20px;
  top:50%;
  transform:translateY(-50%);
  width:28px;
  height:28px;
  border-radius:50%;
  display:flex;
  align-items:center;
  justify-content:center;
  background:var(--brand-signal-dim);
  color:var(--brand-signal);
  font-size:14px;
  font-weight:800;
}
.accordion-button::after{
  content:"";
  margin-left:auto;
  width:9px;
  height:9px;
  flex:0 0 auto;
  border-right:2px solid var(--text-2);
  border-bottom:2px solid var(--text-2);
  background-image:none;
  transform:rotate(45deg);
  transition:transform 180ms var(--ease), border-color 180ms var(--ease);
}
.accordion-button:not(.collapsed)::after{
  transform:rotate(-135deg);
  border-color:var(--brand-signal);
}
.accordion-button:not(.collapsed){color:var(--text-1);}
.accordion-button:hover{color:var(--brand-signal);}
.accordion-body{
  padding:0 22px 22px 62px;
  font-size:15px;
  line-height:1.8;
  color:var(--text-2);
}
.accordion-body p{margin:0;color:var(--text-2);}
.accordion-body strong{color:var(--text-1);font-weight:700;}

/* ---------- cta ---------- */
.cta-card{
  position:relative;
  background:var(--bg-glass);
  border:1px solid var(--line);
  border-radius:var(--radius-lg);
  box-shadow:var(--shadow-card);
  padding:48px 44px;
  overflow:hidden;
  text-align:center;
}
.cta-card::before{
  content:"";
  position:absolute;
  top:0;left:0;right:0;
  height:1px;
  background:linear-gradient(90deg, rgba(255,255,255,.20), rgba(255,255,255,0));
}
.cta-card::after{
  content:"";
  position:absolute;
  width:420px;
  height:420px;
  right:-140px;
  top:-180px;
  border-radius:50%;
  background:radial-gradient(circle, rgba(43,227,182,.16), transparent 68%);
  pointer-events:none;
}
.cta-card .inner{position:relative;z-index:2;}
.cta-card h2{
  font-size:28px;
  font-weight:800;
  line-height:1.35;
  margin-bottom:14px;
}
.cta-card p{
  max-width:640px;
  margin:0 auto 28px;
  font-size:16px;
  color:var(--text-2);
}
.cta-actions{
  display:flex;
  flex-wrap:wrap;
  gap:14px;
  justify-content:center;
}

/* ---------- footer ---------- */
.site-footer{
  position:relative;
  background:var(--bg-1);
  border-top:1px solid var(--line);
  padding-top:64px;
  margin-top:0;
}
.site-footer::before{
  content:"";
  position:absolute;
  top:-1px;left:0;right:0;
  height:1px;
  background:linear-gradient(90deg, transparent, rgba(43,227,182,.65), transparent);
}
.footer-grid{
  display:grid;
  grid-template-columns:1.5fr 1fr 1fr 1.2fr;
  gap:40px;
  padding-bottom:48px;
}
.footer-brand p{
  margin-top:16px;
  font-size:14px;
  line-height:1.8;
  color:var(--text-2);
  max-width:320px;
}
.back-top{
  display:inline-flex;
  align-items:center;
  gap:6px;
  margin-top:20px;
  font-size:13px;
  color:var(--text-2);
  border:1px solid var(--line);
  border-radius:var(--radius-pill);
  padding:7px 16px;
  transition:color 180ms var(--ease), border-color 180ms var(--ease), transform 180ms var(--ease);
}
.back-top:hover{
  color:var(--brand-signal);
  border-color:var(--line-strong);
  transform:translateY(-2px);
}
.footer-col h4{
  font-size:14px;
  font-weight:700;
  color:var(--text-1);
  margin-bottom:18px;
  letter-spacing:.04em;
}
.footer-col ul{display:flex;flex-direction:column;gap:12px;}
.footer-col li{font-size:14px;color:var(--text-2);line-height:1.7;}
.footer-col li small{
  display:block;
  font-size:12px;
  color:var(--text-3);
  margin-top:2px;
}
.footer-col a{
  font-size:14px;
  color:var(--text-2);
  display:inline-block;
  transition:color 180ms var(--ease), transform 180ms var(--ease);
}
.footer-col a:hover{
  color:var(--brand-signal);
  transform:translateX(2px);
}
.footer-bottom{
  display:flex;
  flex-wrap:wrap;
  justify-content:space-between;
  gap:10px;
  padding:22px 0 28px;
  border-top:1px solid var(--line-soft);
  font-size:13px;
  color:var(--text-3);
}

/* ---------- responsive ---------- */
@media (max-width:1199px){
  .hero-sub{grid-template-columns:1fr;}
}
@media (max-width:991px){
  .section{padding:72px 0;}
  .section-tight{padding:56px 0;}
  .main-nav{
    position:fixed;
    top:72px;
    left:0;
    right:0;
    bottom:0;
    flex-direction:column;
    align-items:stretch;
    gap:0;
    padding:24px;
    background:rgba(6,10,20,.98);
    -webkit-backdrop-filter:blur(16px);
    backdrop-filter:blur(16px);
    border-top:1px solid var(--line);
    opacity:0;
    transform:translateY(-10px);
    pointer-events:none;
    transition:opacity 180ms var(--ease), transform 180ms var(--ease);
    overflow-y:auto;
  }
  .main-nav.open{opacity:1;transform:none;pointer-events:auto;}
  .main-nav a{
    font-size:16px;
    padding:16px 0 16px 16px;
    border-bottom:1px solid var(--line-soft);
    border-left:3px solid transparent;
    color:var(--text-1);
  }
  .main-nav a::after{display:none;}
  .main-nav a.active{
    border-left-color:var(--brand-signal);
    color:var(--brand-signal);
    background:linear-gradient(90deg, rgba(43,227,182,.10), transparent);
  }
  .nav-toggle{display:inline-flex;}
  .nav-actions .btn-signal{display:none;}
  .compare-card{grid-template-columns:1fr;}
  .compare-col + .compare-col{
    border-left:0;
    border-top:1px solid var(--line-soft);
  }
  .selfcheck{grid-template-columns:1fr;gap:32px;}
  .footer-grid{grid-template-columns:1fr 1fr;gap:32px;}
  .cat-hero h1{font-size:32px;}
  .cta-card{padding:40px 28px;}
}
@media (max-width:767px){
  .wrap{padding:0 18px;}
  .section{padding:56px 0;}
  .section-tight{padding:48px 0;}
  .cat-hero .wrap{padding-top:40px;padding-bottom:44px;}
  .cat-hero h1{font-size:28px;}
  .cat-hero .hero-lead{font-size:15px;}
  .section-head h2{font-size:24px;}
  .selfcheck-body h2{font-size:23px;}
  .cta-card h2{font-size:23px;}
  .compare-col{padding:26px 22px;}
  .btn-signal,.btn-ghost{width:100%;}
  .cta-actions{flex-direction:column;align-items:stretch;}
  .footer-grid{grid-template-columns:1fr;gap:30px;}
  .footer-bottom{flex-direction:column;}
  .accordion-button{padding:16px 18px 16px 58px;font-size:15px;}
  .accordion-body{padding:0 18px 20px 58px;font-size:14px;}
  .step-list li{padding:14px 16px;gap:12px;}
}
@media (max-width:520px){
  .cat-hero h1{font-size:25px;}
  .brand{font-size:15px;}
  .nav-wrap{height:64px;}
  .main-nav{top:64px;}
  .cta-card{padding:32px 20px;}
}

@media (prefers-reduced-motion:reduce){
  *,*::before,*::after{
    transition-duration:.01ms !important;
    animation-duration:.01ms !important;
    animation-iteration-count:1 !important;
    scroll-behavior:auto !important;
  }
  .btn-signal:hover,.btn-ghost:hover,.step-list li:hover,.footer-col a:hover,.back-top:hover{transform:none;}
}

/* roulang page: category2 */
:root{
  --bg-0:#060A14;
  --bg-1:#0B1224;
  --bg-2:#111A30;
  --bg-glass:rgba(20,32,58,.55);
  --brand-signal:#2BE3B6;
  --brand-signal-dim:rgba(43,227,182,.16);
  --brand-amber:#FFB35C;
  --brand-blue:#3D6BFF;
  --line:rgba(122,152,220,.16);
  --line-strong:rgba(43,227,182,.42);
  --text-1:#E9EFFB;
  --text-2:#A7B4CC;
  --text-3:#6C7A96;
  --danger:#FF6B7A;
  --radius-lg:18px;
  --radius-md:14px;
  --radius-sm:12px;
  --shadow-card:0 18px 44px rgba(0,0,0,.42);
  --ease:cubic-bezier(.2,.7,.3,1);
  --bs-body-bg:#060A14;
  --bs-body-color:#E9EFFB;
  --bs-primary:#2BE3B6;
  --bs-primary-rgb:43,227,182;
  --bs-border-color:rgba(122,152,220,.16);
  --bs-link-color:#2BE3B6;
  --bs-link-hover-color:#3FEFC4;
  --bs-font-sans-serif:'PingFang SC','Microsoft YaHei','Noto Sans SC',system-ui,sans-serif;
}
*,*::before,*::after{box-sizing:border-box;}
html{scroll-behavior:smooth;background:var(--bg-0);}
body{
  margin:0;
  font-family:'PingFang SC','Microsoft YaHei','Noto Sans SC',system-ui,sans-serif;
  font-size:17px;
  line-height:1.85;
  color:var(--text-1);
  background:transparent;
  overflow-x:hidden;
  -webkit-font-smoothing:antialiased;
}
body::before{
  content:"";
  position:fixed;
  inset:0;
  z-index:-2;
  pointer-events:none;
  background:
    radial-gradient(720px 720px at 88% -8%, rgba(43,227,182,.10), transparent 70%),
    radial-gradient(760px 760px at -12% 34%, rgba(61,107,255,.13), transparent 72%);
}
body::after{
  content:"";
  position:fixed;
  inset:0;
  z-index:-1;
  pointer-events:none;
  background-image:
    linear-gradient(rgba(122,152,220,.04) 1px, transparent 1px),
    linear-gradient(90deg, rgba(122,152,220,.04) 1px, transparent 1px);
  background-size:32px 32px;
}
img{max-width:100%;display:block;}
a{color:var(--brand-signal);text-decoration:none;transition:color 180ms var(--ease);}
a:hover{color:#3FEFC4;}
p{margin:0 0 18px;}
p:last-child{margin-bottom:0;}
h1,h2,h3,h4{margin:0;color:var(--text-1);}
ul,ol{margin:0;padding:0;}
button{font-family:inherit;}
:focus-visible{outline:2px solid var(--brand-signal);outline-offset:3px;border-radius:6px;}

.wrap{
  width:100%;
  max-width:1200px;
  margin:0 auto;
  padding:0 24px;
}
.section{padding:96px 0;}
.section-tight{padding:72px 0;}

/* ===== header ===== */
.site-header{
  position:sticky;
  top:0;
  z-index:80;
  background:rgba(6,10,20,.72);
  -webkit-backdrop-filter:blur(14px);
  backdrop-filter:blur(14px);
  border-bottom:1px solid var(--line);
  transition:box-shadow 180ms var(--ease);
}
.site-header.scrolled{
  box-shadow:0 1px 0 rgba(43,227,182,.35), 0 14px 34px rgba(0,0,0,.42);
}
.nav-wrap{
  display:flex;
  align-items:center;
  justify-content:space-between;
  gap:24px;
  height:72px;
}
.brand{
  display:inline-flex;
  align-items:center;
  gap:10px;
  text-decoration:none;
  flex:0 0 auto;
}
.brand-mark{
  display:inline-flex;
  align-items:center;
  justify-content:center;
  width:34px;
  height:34px;
  border-radius:11px;
  background:rgba(43,227,182,.08);
  border:1px solid rgba(43,227,182,.24);
}
.brand-text{
  font-size:17px;
  font-weight:800;
  letter-spacing:.2px;
  color:var(--text-1);
}
.main-nav{
  display:flex;
  align-items:center;
  gap:28px;
}
.main-nav a{
  position:relative;
  font-size:14px;
  color:var(--text-2);
  padding:6px 0;
  text-decoration:none;
  transition:color 180ms var(--ease);
}
.main-nav a::after{
  content:"";
  position:absolute;
  left:50%;
  bottom:-4px;
  width:22px;
  height:2px;
  border-radius:2px;
  background:var(--brand-signal);
  box-shadow:0 0 10px rgba(43,227,182,.7);
  transform:translateX(-50%) scaleX(0);
  transition:transform 180ms var(--ease);
}
.main-nav a:hover{color:var(--text-1);}
.main-nav a.active{color:var(--brand-signal);}
.main-nav a.active::after{transform:translateX(-50%) scaleX(1);}
.nav-actions{
  display:flex;
  align-items:center;
  gap:14px;
  flex:0 0 auto;
}
.nav-toggle{
  display:none;
  align-items:center;
  justify-content:center;
  width:42px;
  height:42px;
  border-radius:12px;
  border:1px solid var(--line);
  background:rgba(20,32,58,.6);
  color:var(--text-1);
  cursor:pointer;
  transition:all 180ms var(--ease);
}
.nav-toggle svg{width:22px;height:22px;transition:transform 180ms var(--ease);}
.nav-toggle:hover{border-color:var(--line-strong);color:var(--brand-signal);}
.nav-toggle[aria-expanded="true"] svg{transform:rotate(90deg);color:var(--brand-signal);}

/* ===== buttons ===== */
.btn{
  display:inline-flex;
  align-items:center;
  justify-content:center;
  gap:8px;
  font-size:15px;
  font-weight:700;
  line-height:1;
  padding:15px 28px;
  border-radius:12px;
  border:1px solid transparent;
  text-decoration:none;
  cursor:pointer;
  white-space:nowrap;
  transition:transform 180ms var(--ease), background 180ms var(--ease), color 180ms var(--ease), border-color 180ms var(--ease), box-shadow 180ms var(--ease);
}
.btn-signal{
  background:var(--brand-signal);
  color:#04140F;
  box-shadow:0 0 22px rgba(43,227,182,.28);
}
.btn-signal:hover{
  background:#3FEFC4;
  color:#04140F;
  transform:translateY(-2px);
  box-shadow:0 0 26px rgba(43,227,182,.35);
}
.btn-signal:active{transform:translateY(1px);}
.btn-ghost{
  background:transparent;
  color:var(--text-1);
  border-color:var(--line);
}
.btn-ghost:hover{
  color:var(--brand-signal);
  border-color:var(--brand-signal);
  transform:translateY(-2px);
}
.btn-ghost:active{transform:translateY(1px);}
.btn-sm{padding:11px 22px;font-size:14px;}

/* ===== page hero ===== */
.page-hero{
  position:relative;
  display:flex;
  align-items:center;
  min-height:360px;
  padding:64px 0 60px;
  background-image:url('/assets/images/backpic/back-1.webp');
  background-size:cover;
  background-position:center;
  border-bottom:1px solid var(--line);
  overflow:hidden;
}
.page-hero::before{
  content:"";
  position:absolute;
  inset:0;
  background:linear-gradient(100deg, rgba(6,10,20,.96) 8%, rgba(6,10,20,.84) 62%, rgba(6,10,20,.92) 100%);
}
.page-hero .wrap{position:relative;z-index:2;}
.crumbs{
  display:flex;
  flex-wrap:wrap;
  align-items:center;
  gap:8px;
  font-size:13px;
  color:var(--text-3);
  margin-bottom:20px;
}
.crumbs a{color:var(--text-3);}
.crumbs a:hover{color:var(--brand-signal);}
.crumbs .sep{color:var(--text-3);opacity:.7;}
.crumbs .now{color:var(--text-1);}
.kicker{
  display:inline-flex;
  align-items:center;
  gap:8px;
  font-size:12px;
  font-weight:700;
  letter-spacing:.08em;
  color:var(--brand-signal);
  background:var(--brand-signal-dim);
  border:1px solid rgba(43,227,182,.28);
  border-radius:999px;
  padding:6px 14px;
}
.page-hero h1{
  font-size:36px;
  font-weight:800;
  line-height:1.26;
  letter-spacing:-.3px;
  margin:18px 0 16px;
  max-width:840px;
}
.page-hero .lead{
  font-size:16px;
  line-height:1.85;
  color:var(--text-2);
  max-width:760px;
  margin:0;
}
.hero-facts{
  display:flex;
  flex-wrap:wrap;
  gap:12px;
  margin-top:26px;
}
.fact{
  display:inline-flex;
  align-items:center;
  gap:8px;
  font-size:13px;
  color:var(--text-2);
  border:1px solid var(--line);
  border-radius:999px;
  padding:7px 14px;
  background:rgba(11,18,36,.5);
}
.fact b{color:var(--brand-amber);font-weight:700;font-variant-numeric:tabular-nums;}

/* ===== section head ===== */
.section-head{
  max-width:760px;
  margin-bottom:48px;
}
.section-head h2{
  font-size:30px;
  font-weight:800;
  line-height:1.3;
  letter-spacing:-.2px;
  margin:14px 0 14px;
}
.section-head p{
  font-size:16px;
  line-height:1.85;
  color:var(--text-2);
  margin:0;
}

/* ===== intro ===== */
.intro-grid{
  display:grid;
  grid-template-columns:1.05fr .95fr;
  gap:56px;
  align-items:center;
}
.intro-copy h2{
  font-size:30px;
  font-weight:800;
  line-height:1.3;
  margin:16px 0 16px;
}
.intro-copy p{
  font-size:16px;
  line-height:1.85;
  color:var(--text-2);
}
.mini-list{
  list-style:none;
  margin-top:26px;
  display:grid;
  gap:14px;
}
.mini-list li{
  position:relative;
  padding-left:26px;
  font-size:15px;
  line-height:1.75;
  color:var(--text-1);
}
.mini-list li::before{
  content:"";
  position:absolute;
  left:0;
  top:10px;
  width:4px;
  height:18px;
  border-radius:2px;
  background:var(--brand-signal);
  box-shadow:0 0 10px rgba(43,227,182,.45);
}
.mini-list li span{display:block;color:var(--text-2);font-size:14px;line-height:1.7;margin-top:4px;}
.intro-media{margin:0;}
.intro-media img{
  width:100%;
  aspect-ratio:16/10;
  object-fit:cover;
  border-radius:var(--radius-md);
  border:1px solid var(--line);
  box-shadow:var(--shadow-card);
}
.intro-media figcaption{
  margin-top:12px;
  font-size:12px;
  line-height:1.7;
  color:var(--text-3);
}

/* ===== timeline ===== */
.flow-section{padding-top:24px;}
.timeline{
  position:relative;
  list-style:none;
  padding-left:56px;
}
.timeline::before{
  content:"";
  position:absolute;
  left:15px;
  top:10px;
  bottom:10px;
  width:2px;
  background:linear-gradient(180deg, rgba(43,227,182,.68), rgba(43,227,182,.12) 70%, rgba(43,227,182,0));
}
.tl-item{
  position:relative;
  margin-bottom:24px;
}
.tl-item:last-child{margin-bottom:0;}
.tl-item::before{
  content:"";
  position:absolute;
  left:-46px;
  top:28px;
  width:12px;
  height:12px;
  border-radius:50%;
  background:var(--brand-signal);
  border:3px solid var(--bg-0);
  box-shadow:0 0 16px rgba(43,227,182,.62);
}
.tl-card{
  position:relative;
  background:var(--bg-glass);
  -webkit-backdrop-filter:blur(14px);
  backdrop-filter:blur(14px);
  border:1px solid var(--line);
  border-radius:var(--radius-lg);
  padding:26px 28px;
  box-shadow:var(--shadow-card);
  transition:transform 180ms var(--ease), border-color 180ms var(--ease);
}
.tl-card::after{
  content:"";
  position:absolute;
  inset:0 0 auto 0;
  height:1px;
  border-radius:var(--radius-lg) var(--radius-lg) 0 0;
  background:linear-gradient(90deg, rgba(255,255,255,.18), transparent 62%);
  pointer-events:none;
}
.tl-card:hover{
  transform:translateY(-4px);
  border-color:var(--brand-signal-dim);
}
.tl-num{
  display:inline-block;
  font-size:30px;
  font-weight:800;
  line-height:1;
  letter-spacing:-.5px;
  font-variant-numeric:tabular-nums;
  color:var(--brand-signal);
}
.tl-card h3{
  font-size:19px;
  font-weight:700;
  margin:10px 0 10px;
}
.tl-card p{
  font-size:16px;
  line-height:1.85;
  color:var(--text-2);
  margin:0;
}
.tl-meta{
  display:flex;
  flex-wrap:wrap;
  gap:10px;
  margin-top:16px;
}
.chip{
  display:inline-flex;
  align-items:center;
  font-size:12px;
  font-weight:700;
  letter-spacing:.06em;
  color:var(--brand-amber);
  background:rgba(255,179,92,.08);
  border:1px solid rgba(255,179,92,.34);
  border-radius:999px;
  padding:4px 12px;
}
.chip-soft{
  color:var(--text-2);
  background:rgba(122,152,220,.06);
  border-color:var(--line);
}

/* ===== tip bar ===== */
.tipbar{
  display:flex;
  align-items:flex-start;
  gap:16px;
  margin-top:48px;
  padding:22px 24px;
  border-radius:var(--radius-md);
  background:var(--brand-signal-dim);
  border:1px solid rgba(43,227,182,.28);
}
.tipbar svg{
  flex:0 0 auto;
  width:22px;
  height:22px;
  margin-top:2px;
  color:var(--brand-signal);
}
.tipbar p{
  margin:0;
  font-size:15px;
  line-height:1.8;
  color:var(--text-1);
}
.tipbar strong{color:var(--brand-signal);font-weight:700;}

/* ===== related links ===== */
.rel-grid{
  display:grid;
  grid-template-columns:repeat(3,1fr);
  gap:20px;
}
.rel-card{
  display:flex;
  flex-direction:column;
  gap:10px;
  padding:26px 24px;
  border-radius:var(--radius-lg);
  background:var(--bg-glass);
  border:1px solid var(--line);
  box-shadow:var(--shadow-card);
  text-decoration:none;
  transition:transform 180ms var(--ease), border-color 180ms var(--ease);
}
.rel-card:hover{
  transform:translateY(-4px);
  border-color:var(--brand-signal-dim);
}
.rel-tag{
  font-size:12px;
  font-weight:700;
  letter-spacing:.08em;
  color:var(--brand-amber);
}
.rel-card h3{
  font-size:18px;
  font-weight:700;
  color:var(--text-1);
  line-height:1.5;
}
.rel-card p{
  font-size:14px;
  line-height:1.75;
  color:var(--text-2);
  margin:0;
}
.rel-more{
  display:inline-flex;
  align-items:center;
  gap:8px;
  margin-top:auto;
  padding-top:14px;
  font-size:13px;
  font-weight:700;
  color:var(--brand-signal);
}
.rel-more svg{width:16px;height:16px;transition:transform 180ms var(--ease);}
.rel-card:hover .rel-more svg{transform:translateX(4px);}

/* ===== CTA ===== */
.cta-card{
  position:relative;
  display:grid;
  grid-template-columns:1.05fr .95fr;
  gap:56px;
  padding:48px;
  border-radius:24px;
  background:var(--bg-glass);
  -webkit-backdrop-filter:blur(16px);
  backdrop-filter:blur(16px);
  border:1px solid var(--line);
  box-shadow:var(--shadow-card);
  overflow:hidden;
}
.cta-card::after{
  content:"";
  position:absolute;
  inset:0 0 auto 0;
  height:1px;
  background:linear-gradient(90deg, rgba(255,255,255,.18), transparent 60%);
  pointer-events:none;
}
.cta-card h2{
  font-size:30px;
  font-weight:800;
  line-height:1.3;
  letter-spacing:-.2px;
  margin:16px 0 16px;
}
.cta-card > div > p{
  font-size:16px;
  line-height:1.85;
  color:var(--text-2);
}
.point-list{
  list-style:none;
  display:grid;
  gap:14px;
  margin-top:26px;
}
.point-list li{
  display:flex;
  align-items:flex-start;
  gap:10px;
  font-size:15px;
  line-height:1.7;
  color:var(--text-1);
}
.point-list svg{
  flex:0 0 auto;
  width:20px;
  height:20px;
  margin-top:3px;
  color:var(--brand-signal);
}
.cta-note{
  margin-top:24px;
  font-size:13px;
  line-height:1.7;
  color:var(--text-3);
}
.cta-form{
  display:grid;
  gap:14px;
  align-content:start;
}
.cta-form label{
  font-size:13px;
  font-weight:700;
  letter-spacing:.04em;
  color:var(--text-2);
  margin-bottom:8px;
  display:block;
}
.cta-form input{
  width:100%;
  padding:14px 16px;
  font-size:15px;
  color:var(--text-1);
  background:rgba(6,10,20,.62);
  border:1px solid var(--line);
  border-radius:var(--radius-sm);
  transition:border-color 180ms var(--ease), box-shadow 180ms var(--ease);
}
.cta-form input::placeholder{color:var(--text-3);}
.cta-form input:focus{
  outline:none;
  border-color:var(--brand-signal);
  box-shadow:0 0 0 3px rgba(43,227,182,.14);
}
.cta-form .btn{width:100%;margin-top:6px;}
.form-hint{
  font-size:12px;
  line-height:1.7;
  color:var(--text-3);
  margin:0;
}
.form-msg{
  display:none;
  font-size:13px;
  line-height:1.7;
  color:var(--brand-signal);
  margin:0;
}
.form-msg.show{display:block;}

/* ===== footer ===== */
.site-footer{
  position:relative;
  margin-top:24px;
  padding:72px 0 32px;
  background:rgba(11,18,36,.72);
  border-top:1px solid var(--line);
}
.site-footer::before{
  content:"";
  position:absolute;
  top:-1px;
  left:0;
  right:0;
  height:1px;
  background:linear-gradient(90deg, transparent, rgba(43,227,182,.55), transparent);
}
.footer-grid{
  display:grid;
  grid-template-columns:1.5fr 1fr 1fr 1.2fr;
  gap:40px;
}
.footer-brand .brand{margin-bottom:18px;}
.footer-brand p{
  font-size:14px;
  line-height:1.8;
  color:var(--text-2);
  max-width:320px;
  margin-bottom:20px;
}
.back-top{
  display:inline-flex;
  align-items:center;
  gap:8px;
  font-size:13px;
  font-weight:700;
  color:var(--text-2);
  padding:9px 16px;
  border-radius:999px;
  border:1px solid var(--line);
  transition:all 180ms var(--ease);
}
.back-top:hover{
  color:var(--brand-signal);
  border-color:var(--line-strong);
  transform:translateY(-2px);
}
.footer-col h4{
  font-size:13px;
  font-weight:700;
  letter-spacing:.08em;
  color:var(--text-3);
  margin-bottom:18px;
}
.footer-col ul{
  list-style:none;
  display:grid;
  gap:12px;
}
.footer-col li{
  font-size:14px;
  line-height:1.7;
  color:var(--text-2);
}
.footer-col ul a{
  font-size:14px;
  color:var(--text-2);
  transition:color 180ms var(--ease), transform 180ms var(--ease);
  display:inline-block;
}
.footer-col ul a:hover{
  color:var(--brand-signal);
  transform:translateX(2px);
}
.footer-col small{
  display:block;
  margin-top:4px;
  font-size:12px;
  color:var(--text-3);
}
.footer-bottom{
  display:flex;
  flex-wrap:wrap;
  align-items:center;
  justify-content:space-between;
  gap:12px;
  margin-top:48px;
  padding-top:24px;
  border-top:1px solid var(--line);
  font-size:13px;
  color:var(--text-3);
}

/* ===== responsive ===== */
@media (max-width:1199px){
  .intro-grid{gap:40px;}
  .cta-card{gap:40px;padding:40px;}
}
@media (max-width:991px){
  .section{padding:72px 0;}
  .main-nav{
    position:fixed;
    inset:0;
    z-index:70;
    flex-direction:column;
    justify-content:center;
    align-items:stretch;
    gap:6px;
    padding:0 28px;
    background:rgba(6,10,20,.97);
    -webkit-backdrop-filter:blur(16px);
    backdrop-filter:blur(16px);
    transform:translateY(-100%);
    opacity:0;
    pointer-events:none;
    transition:transform 220ms var(--ease), opacity 220ms var(--ease);
  }
  .main-nav.open{
    transform:translateY(0);
    opacity:1;
    pointer-events:auto;
  }
  .main-nav a{
    font-size:17px;
    font-weight:700;
    color:var(--text-1);
    padding:16px 0 16px 18px;
    border-bottom:1px solid var(--line);
  }
  .main-nav a::before{
    content:"";
    position:absolute;
    left:0;
    top:50%;
    transform:translateY(-50%);
    width:3px;
    height:20px;
    border-radius:2px;
    background:var(--brand-signal);
    box-shadow:0 0 12px rgba(43,227,182,.7);
    opacity:.35;
    transition:opacity 180ms var(--ease);
  }
  .main-nav a.active::before,
  .main-nav a:hover::before{opacity:1;}
  .main-nav a::after{display:none;}
  .nav-toggle{display:inline-flex;z-index:85;position:relative;}
  .intro-grid{grid-template-columns:1fr;gap:32px;}
  .rel-grid{grid-template-columns:1fr;gap:16px;}
  .cta-card{grid-template-columns:1fr;padding:32px;}
  .footer-grid{grid-template-columns:1fr 1fr;gap:32px;}
  .page-hero{min-height:320px;padding:56px 0 52px;}
}
@media (max-width:767px){
  body{font-size:16px;}
  .wrap{padding:0 18px;}
  .section,.section-tight{padding:56px 0;}
  .page-hero{padding:44px 0 44px;min-height:auto;}
  .page-hero h1{font-size:27px;line-height:1.32;}
  .page-hero .lead{font-size:15px;}
  .section-head h2,
  .intro-copy h2,
  .cta-card h2{font-size:23px;}
  .timeline{padding-left:44px;}
  .timeline::before{left:11px;}
  .tl-item::before{left:-38px;top:26px;}
  .tl-card{padding:22px 20px;}
  .tl-num{font-size:26px;}
  .tl-card h3{font-size:17px;}
  .tl-card p{font-size:15px;}
  .tipbar{padding:18px 18px;gap:12px;}
  .tipbar p{font-size:14px;}
  .btn{width:100%;padding:15px 22px;}
  .nav-actions .btn{width:auto;padding:12px 18px;font-size:14px;}
  .footer-grid{grid-template-columns:1fr;gap:28px;}
  .footer-bottom{flex-direction:column;align-items:flex-start;}
  .cta-card{padding:26px 20px;border-radius:20px;}
  .rel-card{padding:22px 20px;}
  .fact{font-size:12px;padding:6px 12px;}
}
@media (max-width:575px){
  .nav-actions .btn{display:none;}
  .page-hero h1{font-size:24px;}
  .brand-text{font-size:16px;}
  .hero-facts{gap:8px;}
}
@media (prefers-reduced-motion:reduce){
  html{scroll-behavior:auto;}
  *,*::before,*::after{transition-duration:.01ms !important;animation-duration:.01ms !important;}
  .tl-card:hover,
  .rel-card:hover,
  .btn:hover{transform:none;}
}