/* roulang page: index */
:root{
  --bg-900:#05080F;
  --bg-800:#0A101C;
  --bg-700:#070C17;
  --brand-600:#2F5BFF;
  --brand-400:#5B84FF;
  --accent-500:#1FD0BE;
  --accent-300:#7BF0E3;
  --warn-400:#F2A93B;
  --text-100:#EAF0FA;
  --text-300:#A9B7CC;
  --text-500:#6E7E96;
  --line:rgba(255,255,255,.09);
  --surface:rgba(255,255,255,.045);
  --surface-2:rgba(255,255,255,.07);
  --r-card:20px;
  --r-btn:12px;
  --r-badge:999px;
  --r-img:16px;
  --shadow-1:0 12px 30px -18px rgba(0,0,0,.9);
  --shadow-2:0 20px 44px -20px rgba(0,0,0,.95);
  --ease:cubic-bezier(.4,0,.2,1);
  --bs-primary:#2F5BFF;
  --bs-body-bg:#05080F;
  --bs-body-color:#EAF0FA;
  --bs-border-color:rgba(255,255,255,.09);
  --bs-link-color:#5B84FF;
  --bs-link-hover-color:#7BF0E3;
}
*{box-sizing:border-box;}
html{scroll-behavior:smooth;-webkit-text-size-adjust:100%;}
body{
  margin:0;
  background:var(--bg-900);
  color:var(--text-100);
  font-family:"PingFang SC","HarmonyOS Sans SC","Microsoft YaHei",system-ui,-apple-system,"Segoe UI",sans-serif;
  font-size:16px;
  line-height:1.85;
  font-variant-numeric:tabular-nums;
  padding-bottom:0;
  overflow-x:hidden;
}
body.no-scroll{overflow:hidden;}
a{color:var(--brand-400);text-decoration:none;transition:color .2s var(--ease);}
a:hover{color:var(--accent-300);}
img{max-width:100%;display:block;}
h1,h2,h3,h4{margin:0;color:var(--text-100);font-weight:650;letter-spacing:.2px;}
p{margin:0 0 1em;}
button{font-family:inherit;}
:focus-visible{outline:2px solid var(--brand-400);outline-offset:3px;border-radius:6px;}
.container{max-width:1200px;padding-left:24px;padding-right:24px;margin:0 auto;width:100%;}
section{scroll-margin-top:88px;}
.sec{padding:110px 0;}
.sec-alt{background:var(--bg-700);}
.sec-head{max-width:760px;margin-bottom:52px;}
.sec-head h2{font-size:clamp(24px,3.4vw,34px);line-height:1.25;}
.sec-head p{margin-top:14px;color:var(--text-300);font-size:16px;}
.eyebrow{
  display:inline-flex;align-items:center;gap:8px;
  font-size:12px;letter-spacing:.14em;text-transform:uppercase;
  color:var(--accent-300);border:1px solid rgba(31,208,190,.28);
  background:rgba(31,208,190,.08);
  padding:6px 14px;border-radius:var(--r-badge);margin-bottom:18px;
}
.eyebrow i{font-size:11px;}

/* ============ 顶部导航 ============ */
.site-header{
  position:fixed;top:0;left:0;right:0;z-index:1200;
  height:72px;display:flex;align-items:center;
  background:rgba(5,8,15,.72);
  border-bottom:1px solid transparent;
  transition:background .25s var(--ease),backdrop-filter .25s var(--ease),border-color .25s var(--ease);
}
.site-header.is-scrolled{
  background:rgba(7,12,23,.82);
  backdrop-filter:blur(12px) saturate(150%);
  -webkit-backdrop-filter:blur(12px) saturate(150%);
  border-bottom:1px solid var(--line);
}
.header-inner{display:flex;align-items:center;justify-content:space-between;gap:24px;}
.brand{display:flex;align-items:center;gap:11px;color:var(--text-100);font-weight:700;font-size:19px;letter-spacing:.4px;}
.brand:hover{color:var(--text-100);}
.brand-mark{position:relative;width:30px;height:30px;flex:0 0 30px;display:inline-block;}
.brand-mark span{position:absolute;background:linear-gradient(135deg,var(--brand-400),var(--accent-500));border-radius:3px;}
.brand-mark span:nth-child(1){left:2px;top:2px;width:11px;height:11px;}
.brand-mark span:nth-child(2){right:2px;bottom:2px;width:11px;height:11px;}
.brand-mark::after{content:"";position:absolute;left:50%;top:50%;transform:translate(-50%,-50%);width:18px;height:1.5px;background:rgba(234,240,250,.55);}
.nav-desktop{display:flex;align-items:center;gap:6px;}
.nav-link{
  position:relative;display:inline-block;padding:8px 14px;border-radius:var(--r-btn);
  color:var(--text-300);font-size:15px;transition:color .2s var(--ease),background .2s var(--ease);
}
.nav-link:hover{color:var(--text-100);background:var(--surface);}
.nav-link.active{color:var(--text-100);}
.nav-link.active::after{
  content:"";position:absolute;left:14px;right:14px;bottom:0;height:2px;border-radius:2px;
  background:linear-gradient(90deg,var(--brand-400),var(--accent-500));
}
.header-actions{display:flex;align-items:center;gap:12px;}
.nav-toggle{
  display:none;width:42px;height:42px;border-radius:var(--r-btn);
  background:var(--surface);border:1px solid var(--line);color:var(--text-100);
  align-items:center;justify-content:center;cursor:pointer;
}
.nav-toggle:hover{background:var(--surface-2);}
.mobile-drawer{
  position:fixed;inset:0;z-index:1300;background:#070C17;
  display:flex;flex-direction:column;padding:22px 20px 30px;
  transform:translateX(100%);transition:transform .28s var(--ease);
  visibility:hidden;
}
.mobile-drawer.open{transform:translateX(0);visibility:visible;}
.drawer-top{display:flex;align-items:center;justify-content:space-between;margin-bottom:22px;}
.drawer-close{width:42px;height:42px;border-radius:var(--r-btn);background:var(--surface);border:1px solid var(--line);color:var(--text-100);cursor:pointer;}
.drawer-link{
  display:flex;align-items:center;justify-content:space-between;
  height:56px;padding:0 6px;color:var(--text-300);font-size:16px;
  border-bottom:1px solid var(--line);
}
.drawer-link.active,.drawer-link:hover{color:var(--text-100);}
.drawer-foot{margin-top:auto;padding-top:24px;border-top:1px solid var(--line);font-size:13px;color:var(--text-500);}
.drawer-foot a{display:inline-flex;align-items:center;gap:8px;color:var(--accent-300);}

/* ============ 按钮 ============ */
.btn{font-weight:600;border-radius:var(--r-btn);border:1px solid transparent;transition:all .2s var(--ease);display:inline-flex;align-items:center;gap:8px;justify-content:center;}
.btn-brand{
  background:linear-gradient(135deg,var(--brand-600),var(--brand-400));
  color:#fff;padding:13px 26px;font-size:15px;
  box-shadow:0 0 0 1px rgba(47,91,255,.5),0 10px 34px -12px rgba(47,91,255,.8);
}
.btn-brand:hover{color:#fff;filter:brightness(1.08);transform:translateY(-1px);}
.btn-ghost{
  background:transparent;border:1px solid var(--line);color:var(--text-100);
  padding:12px 24px;font-size:15px;
}
.btn-ghost:hover{border-color:rgba(91,132,255,.5);color:var(--text-100);background:var(--surface);transform:translateY(-1px);}
.btn-line{background:var(--surface);border:1px solid var(--line);color:var(--text-100);padding:11px 20px;font-size:14px;}
.btn-line:hover{background:var(--surface-2);color:var(--text-100);border-color:rgba(91,132,255,.4);}
.btn-sm{padding:9px 18px;font-size:14px;}
.inline-link{display:inline-flex;align-items:center;gap:8px;color:var(--accent-300);font-size:14px;font-weight:600;text-decoration:underline;text-underline-offset:3px;text-decoration-color:rgba(123,240,227,.35);}
.inline-link:hover{color:var(--accent-300);text-underline-offset:6px;}

/* ============ Hero ============ */
.hero{
  position:relative;padding:150px 0 96px;overflow:hidden;
  background:var(--bg-900);
}
.hero-bg{position:absolute;inset:0;z-index:0;}
.hero-bg img{width:100%;height:100%;object-fit:cover;opacity:.34;}
.hero-bg::after{
  content:"";position:absolute;inset:0;
  background:
    radial-gradient(720px 420px at 12% 8%,rgba(47,91,255,.28),transparent 68%),
    radial-gradient(620px 380px at 88% 72%,rgba(31,208,190,.18),transparent 70%),
    linear-gradient(180deg,rgba(5,8,15,.72) 0%,rgba(5,8,15,.94) 68%,var(--bg-900) 100%);
}
.hero-grid-bg{
  position:absolute;inset:0;z-index:0;pointer-events:none;opacity:.5;
  background-image:linear-gradient(rgba(255,255,255,.045) 1px,transparent 1px),linear-gradient(90deg,rgba(255,255,255,.045) 1px,transparent 1px);
  background-size:64px 64px;
  mask-image:radial-gradient(900px 520px at 50% 20%,#000,transparent 78%);
  -webkit-mask-image:radial-gradient(900px 520px at 50% 20%,#000,transparent 78%);
}
.hero .container{position:relative;z-index:2;}
.hero h1{
  font-size:clamp(30px,5vw,52px);line-height:1.15;font-weight:700;max-width:14em;
}
.hero h1 em{font-style:normal;background:linear-gradient(100deg,var(--accent-300),var(--brand-400));-webkit-background-clip:text;background-clip:text;color:transparent;}
.hero-sub{margin-top:20px;font-size:17px;color:var(--text-300);max-width:26em;}
.hero-actions{display:flex;flex-wrap:wrap;gap:14px;margin-top:34px;}
.trust-bar{
  display:grid;grid-template-columns:repeat(4,1fr);gap:16px;margin-top:56px;
  padding:22px 24px;border:1px solid var(--line);border-radius:var(--r-card);
  background:var(--surface);backdrop-filter:blur(14px) saturate(140%);-webkit-backdrop-filter:blur(14px) saturate(140%);
  box-shadow:var(--shadow-1);
}
.trust-item{display:flex;align-items:center;gap:12px;}
.trust-item i{font-size:17px;color:var(--accent-500);}
.trust-item .t-label{font-size:12px;color:var(--text-500);display:block;line-height:1.4;}
.trust-item .t-value{font-size:16px;font-weight:650;color:var(--text-100);line-height:1.4;}
.hero-panel{
  position:relative;margin-top:56px;border:1px solid var(--line);border-radius:var(--r-card);
  background:linear-gradient(160deg,rgba(255,255,255,.07),rgba(255,255,255,.02));
  padding:18px;box-shadow:var(--shadow-2);overflow:hidden;
}
.hero-panel::before{
  content:"";position:absolute;left:0;right:0;top:0;height:1px;
  background:linear-gradient(90deg,var(--brand-400),transparent);
}
.hero-panel img{border-radius:var(--r-img);width:100%;aspect-ratio:16/9;object-fit:cover;}
.hero-panel-cap{display:flex;align-items:center;justify-content:space-between;gap:14px;margin-top:14px;font-size:13px;color:var(--text-500);}

/* ============ 卖点区 ============ */
.feature-row{
  display:grid;grid-template-columns:1fr 1fr;gap:56px;align-items:center;
  padding:38px 0;border-bottom:1px solid var(--line);
}
.feature-row:last-child{border-bottom:none;}
.feature-row.reverse .fr-media{order:2;}
.feature-row.reverse .fr-text{order:1;}
.fr-media{
  position:relative;border:1px solid var(--line);border-radius:var(--r-card);
  padding:12px;background:var(--surface);box-shadow:var(--shadow-1);overflow:hidden;
  transition:transform .22s var(--ease),border-color .22s var(--ease);
}
.fr-media::before{content:"";position:absolute;left:0;right:0;top:0;height:1px;background:linear-gradient(90deg,var(--brand-400),transparent);}
.fr-media img{border-radius:var(--r-img);aspect-ratio:16/9;object-fit:cover;width:100%;}
.feature-row:hover .fr-media{border-color:rgba(91,132,255,.35);transform:translateY(-4px);}
.fr-index{font-size:12px;letter-spacing:.16em;color:var(--accent-300);margin-bottom:12px;display:block;}
.fr-text h3{font-size:20px;line-height:1.4;margin-bottom:12px;}
.fr-text p{color:var(--text-300);font-size:15.5px;margin-bottom:18px;}

/* ============ 演示区 ============ */
.demo-grid{display:grid;grid-template-columns:60% 40%;gap:44px;align-items:center;}
.demo-shot{
  position:relative;border:1px solid var(--line);border-radius:var(--r-card);padding:14px;
  background:var(--surface);box-shadow:0 0 0 1px rgba(47,91,255,.16),var(--shadow-2);
}
.demo-shot img{border-radius:var(--r-img);aspect-ratio:16/9;object-fit:cover;width:100%;}
.demo-shot::after{
  content:"";position:absolute;inset:-1px;border-radius:var(--r-card);pointer-events:none;
  box-shadow:inset 0 0 60px -30px rgba(47,91,255,.9);
}
.demo-list{list-style:none;padding:0;margin:0;}
.demo-list li{
  display:flex;gap:14px;padding:18px 0;border-bottom:1px solid var(--line);
}
.demo-list li:last-child{border-bottom:none;}
.demo-list i{color:var(--accent-500);font-size:15px;margin-top:6px;}
.demo-list strong{display:block;font-size:16px;margin-bottom:4px;font-weight:600;}
.demo-list span{color:var(--text-300);font-size:14.5px;}
.demo-more{margin-top:26px;}

/* ============ 证据区 ============ */
.proof-track{
  display:grid;grid-template-columns:repeat(4,1fr);gap:22px;
}
.proof-card{
  border:1px solid var(--line);border-radius:var(--r-card);padding:26px 24px;
  background:linear-gradient(160deg,rgba(255,255,255,.06),rgba(255,255,255,.015));
  position:relative;overflow:hidden;transition:transform .22s var(--ease),border-color .22s var(--ease);
}
.proof-card::before{content:"";position:absolute;left:0;right:0;top:0;height:1px;background:linear-gradient(90deg,var(--accent-500),transparent);}
.proof-card:hover{transform:translateY(-4px);border-color:rgba(91,132,255,.35);}
.proof-num{font-size:34px;font-weight:700;color:var(--accent-500);line-height:1.1;}
.proof-num small{font-size:14px;color:var(--text-300);font-weight:500;margin-left:4px;}
.proof-card p{margin:12px 0 14px;color:var(--text-300);font-size:14.5px;}
.proof-src{font-size:12px;color:var(--text-500);border-top:1px dashed var(--line);padding-top:10px;}

/* ============ 分档区 ============ */
.tier-stack{display:flex;flex-direction:column;gap:22px;}
.tier{
  display:grid;grid-template-columns:220px 1fr 200px;gap:28px;align-items:center;
  border:1px solid var(--line);border-radius:var(--r-card);padding:28px 30px;
  background:var(--surface);transition:transform .22s var(--ease),border-color .22s var(--ease),background .22s var(--ease);
}
.tier:hover{transform:translateY(-4px);border-color:rgba(91,132,255,.35);background:var(--surface-2);}
.tier-name{font-size:19px;font-weight:650;}
.tier-price{font-size:26px;font-weight:700;color:var(--accent-500);margin-top:8px;}
.tier-price small{font-size:13px;color:var(--text-500);font-weight:500;margin-left:6px;}
.tier ul{list-style:none;padding:0;margin:0;display:grid;grid-template-columns:1fr 1fr;gap:10px 22px;}
.tier ul li{font-size:14.5px;color:var(--text-300);display:flex;gap:9px;align-items:flex-start;}
.tier ul li i{color:var(--accent-500);font-size:12px;margin-top:7px;}
.tier-reco{
  position:relative;border:1px solid transparent;
  background:
    linear-gradient(var(--bg-700),var(--bg-700)) padding-box,
    linear-gradient(100deg,var(--brand-400),var(--accent-500)) border-box;
}
.tier-badge{
  position:absolute;top:-12px;left:30px;font-size:12px;padding:4px 12px;border-radius:var(--r-badge);
  background:linear-gradient(100deg,var(--brand-600),var(--accent-500));color:#04121a;font-weight:700;letter-spacing:.06em;
}
.tier-cta{display:flex;justify-content:flex-end;}
.tier-price .warn{color:var(--warn-400);}

/* ============ FAQ ============ */
.faq-accordion .accordion-item{background:transparent;border:none;border-bottom:1px solid var(--line);}
.faq-accordion .accordion-button{
  background:transparent;color:var(--text-100);font-size:17px;font-weight:600;
  padding:22px 44px 22px 0;box-shadow:none;border-radius:0;
}
.faq-accordion .accordion-button:not(.collapsed){color:var(--text-100);background:transparent;box-shadow:none;}
.faq-accordion .accordion-button::after{
  background-image:none;content:"+";font-size:22px;font-weight:400;color:var(--accent-300);
  width:auto;height:auto;transform:none;position:absolute;right:6px;top:50%;margin-top:-16px;line-height:32px;
}
.faq-accordion .accordion-button:not(.collapsed)::after{content:"−";color:var(--accent-300);transform:none;}
.faq-accordion .accordion-button:focus{box-shadow:none;outline:none;}
.faq-accordion .accordion-button:focus-visible{outline:2px solid var(--brand-400);outline-offset:-2px;}
.faq-accordion .accordion-body{padding:0 44px 24px 0;color:var(--text-300);font-size:15.5px;}
.faq-accordion .accordion-collapse{border-left:3px solid transparent;}
.faq-accordion .accordion-collapse.show{border-left:3px solid rgba(123,240,227,.75);box-shadow:inset 4px 0 18px -12px rgba(123,240,227,.9);}
.faq-accordion h3{margin:0;}

/* ============ 最新信息 CMS 区 ============ */
.news-head{display:flex;align-items:flex-end;justify-content:space-between;gap:24px;flex-wrap:wrap;margin-bottom:40px;}
.news-grid{display:grid;grid-template-columns:repeat(2,1fr);gap:22px;}
.news-card{
  position:relative;display:flex;flex-direction:column;gap:14px;
  border:1px solid var(--line);border-radius:var(--r-card);padding:24px;
  background:var(--surface);transition:transform .22s var(--ease),border-color .22s var(--ease),box-shadow .22s var(--ease);
}
.news-card::before{content:"";position:absolute;left:0;right:0;top:0;height:1px;background:linear-gradient(90deg,var(--brand-400),transparent);border-radius:var(--r-card) var(--r-card) 0 0;}
.news-card:hover{transform:translateY(-4px);border-color:rgba(91,132,255,.35);box-shadow:var(--shadow-2);}
.news-card h3{font-size:18px;line-height:1.5;}
.news-card h3 a{color:var(--text-100);}
.news-card h3 a:hover{color:var(--accent-300);}
.news-card .news-sum{color:var(--text-300);font-size:14.5px;margin:0;display:-webkit-box;-webkit-line-clamp:2;-webkit-box-orient:vertical;overflow:hidden;line-height:1.75;}
.news-meta{display:flex;align-items:center;gap:12px;flex-wrap:wrap;font-size:12.5px;color:var(--text-500);margin-top:auto;}
.badge-cat{
  display:inline-flex;align-items:center;gap:6px;font-size:12px;padding:4px 12px;border-radius:var(--r-badge);
  background:rgba(31,208,190,.1);border:1px solid rgba(31,208,190,.28);color:var(--accent-300);
}
.news-arrow{margin-left:auto;color:var(--brand-400);font-size:14px;transition:transform .2s var(--ease);}
.news-card:hover .news-arrow{transform:translateX(4px);color:var(--accent-300);}
.news-card--lead{grid-column:1/-1;flex-direction:row;align-items:stretch;gap:26px;padding:0;overflow:hidden;}
.news-card--lead .lead-media{flex:0 0 42%;max-width:42%;}
.news-card--lead .lead-media img{width:100%;height:100%;object-fit:cover;min-height:230px;}
.news-card--lead .lead-body{padding:28px 30px 28px 0;display:flex;flex-direction:column;gap:14px;flex:1;}
.news-card--lead h3{font-size:22px;line-height:1.45;}
@media (max-width:767.98px){
  .news-card--lead{flex-direction:column;}
  .news-card--lead .lead-media{flex:none;max-width:100%;}
  .news-card--lead .lead-body{padding:22px 24px 26px;}
}
.news-empty{
  border:1px dashed var(--line);border-radius:var(--r-card);padding:52px 24px;text-align:center;
  background:var(--surface);color:var(--text-300);
}
.news-empty i{font-size:26px;color:var(--text-500);display:block;margin-bottom:14px;}
.news-empty a{display:inline-block;margin-top:14px;color:var(--accent-300);font-size:14px;}

/* ============ CTA + 表单 ============ */
.cta-wrap{
  position:relative;border:1px solid var(--line);border-radius:var(--r-card);overflow:hidden;
  background:linear-gradient(150deg,rgba(47,91,255,.16),rgba(31,208,190,.08) 60%,rgba(255,255,255,.02));
  padding:56px 52px;
}
.cta-wrap::before{
  content:"";position:absolute;inset:0;pointer-events:none;
  background:radial-gradient(560px 300px at 80% 10%,rgba(47,91,255,.32),transparent 70%);
}
.cta-inner{position:relative;z-index:1;display:grid;grid-template-columns:1fr 1fr;gap:44px;align-items:start;}
.cta-inner h2{font-size:clamp(24px,3.4vw,34px);line-height:1.25;}
.cta-inner .cta-lead{color:var(--text-300);margin-top:14px;font-size:15.5px;}
.cta-points{list-style:none;padding:0;margin:24px 0 0;}
.cta-points li{display:flex;gap:10px;align-items:flex-start;color:var(--text-300);font-size:14.5px;margin-bottom:10px;}
.cta-points i{color:var(--accent-500);font-size:12px;margin-top:7px;}
.form-panel{
  border:1px solid var(--line);border-radius:var(--r-card);padding:26px;
  background:rgba(5,8,15,.55);backdrop-filter:blur(14px) saturate(140%);-webkit-backdrop-filter:blur(14px) saturate(140%);
}
.form-grid{display:grid;grid-template-columns:1fr 1fr;gap:16px;}
.field{display:flex;flex-direction:column;gap:7px;}
.field.full{grid-column:1/-1;}
.field label{font-size:13px;color:var(--text-300);}
.field .req{color:var(--warn-400);}
.form-control,.form-select{
  background:var(--surface);border:1px solid var(--line);border-radius:var(--r-btn);
  color:var(--text-100);padding:12px 14px;font-size:14.5px;width:100%;
  transition:border-color .2s var(--ease),box-shadow .2s var(--ease);
}
.form-control::placeholder{color:var(--text-500);}
.form-control:focus,.form-select:focus{
  background:var(--surface-2);border-color:var(--brand-400);color:var(--text-100);
  box-shadow:0 0 0 4px rgba(47,91,255,.18);outline:none;
}
.hint{font-size:13px;color:var(--warn-400);}
.form-foot{margin-top:18px;display:flex;align-items:center;justify-content:space-between;gap:14px;flex-wrap:wrap;}
.form-foot .tip{font-size:12.5px;color:var(--text-500);}

/* ============ 页脚 ============ */
.site-footer{background:var(--bg-800);border-top:1px solid var(--line);padding:72px 0 0;margin-top:0;}
.footer-grid{display:grid;grid-template-columns:1.5fr 1fr 1fr 1.2fr;gap:40px;padding-bottom:48px;}
.footer-brand{display:flex;align-items:center;gap:11px;font-size:19px;font-weight:700;color:var(--text-100);margin-bottom:14px;}
.footer-about{color:var(--text-300);font-size:14px;max-width:34em;}
.footer-col h4{font-size:14px;letter-spacing:.06em;color:var(--text-100);margin-bottom:16px;}
.footer-col ul{list-style:none;padding:0;margin:0;}
.footer-col ul li{margin-bottom:10px;}
.footer-col ul li a{color:var(--text-300);font-size:14px;}
.footer-col ul li a:hover{color:var(--accent-300);}
.footer-contact{color:var(--text-300);font-size:14px;}
.footer-contact .qr{
  width:96px;height:96px;border-radius:12px;border:1px solid var(--line);background:var(--surface);
  display:flex;align-items:center;justify-content:center;color:var(--text-500);font-size:12px;margin-top:14px;text-align:center;
}
.footer-bottom{
  border-top:1px solid var(--line);padding:22px 0;
  display:flex;align-items:center;justify-content:space-between;gap:16px;flex-wrap:wrap;
  color:var(--text-500);font-size:13px;
}
.footer-bottom a{color:var(--text-500);}
.footer-bottom a:hover{color:var(--accent-300);}

/* ============ 浮动 CTA ============ */
.float-cta{
  position:fixed;right:26px;bottom:26px;z-index:1100;
  display:inline-flex;align-items:center;gap:10px;
  padding:14px 24px;border-radius:var(--r-badge);
  background:linear-gradient(135deg,var(--brand-600),var(--brand-400));color:#fff;font-size:14.5px;font-weight:600;
  box-shadow:0 0 0 1px rgba(47,91,255,.5),0 14px 40px -14px rgba(47,91,255,.9);
  opacity:0;visibility:hidden;transform:translateY(14px);
  transition:opacity .28s var(--ease),transform .28s var(--ease),visibility .28s var(--ease);
}
.float-cta.is-visible{opacity:1;visibility:visible;transform:translateY(0);}
.float-cta:hover{color:#fff;filter:brightness(1.08);}

/* ============ 响应式 ============ */
@media (max-width:1199.98px){
  .sec{padding:88px 0;}
  .hero{padding:132px 0 84px;}
  .proof-track{grid-template-columns:repeat(2,1fr);}
  .tier{grid-template-columns:190px 1fr;grid-template-areas:"name list" "price cta";gap:20px 28px;}
  .tier .tier-name-wrap{grid-area:name;}
  .tier ul{grid-area:list;}
  .tier-cta{grid-area:cta;justify-content:flex-start;}
}
@media (max-width:991.98px){
  .nav-desktop{display:none;}
  .nav-toggle{display:inline-flex;}
  .header-actions .btn-ghost{display:none;}
  .sec{padding:72px 0;}
  .hero{padding:118px 0 72px;}
  .feature-row{grid-template-columns:1fr;gap:26px;padding:32px 0;}
  .feature-row.reverse .fr-media,.feature-row.reverse .fr-text{order:initial;}
  .demo-grid{grid-template-columns:1fr;gap:32px;}
  .trust-bar{grid-template-columns:repeat(2,1fr);}
  .footer-grid{grid-template-columns:1fr 1fr;gap:32px;}
  .cta-inner{grid-template-columns:1fr;gap:32px;}
  .cta-wrap{padding:40px 30px;}
  .news-grid{grid-template-columns:1fr;}
}
@media (max-width:767.98px){
  .container{padding-left:18px;padding-right:18px;}
  .hero{padding:106px 0 60px;}
  .hero-sub{font-size:16px;}
  .hero-actions .btn{width:100%;}
  .trust-bar{padding:18px;gap:14px;}
  .sec{padding:56px 0;}
  .sec-head{margin-bottom:34px;}
  .proof-track{grid-template-columns:1fr;gap:16px;}
  .tier{grid-template-columns:1fr;grid-template-areas:none;padding:24px 22px;}
  .tier .tier-name-wrap,.tier ul,.tier-cta{grid-area:auto;}
  .tier ul{grid-template-columns:1fr;}
  .news-card--lead h3{font-size:19px;}
  .form-grid{grid-template-columns:1fr;}
  .footer-grid{grid-template-columns:1fr;gap:28px;}
  body{padding-bottom:56px;}
  .float-cta{
    right:0;left:0;bottom:0;width:100%;border-radius:0;
    justify-content:center;padding:0 20px;height:56px;
    padding-bottom:env(safe-area-inset-bottom);
    opacity:1;visibility:visible;transform:none;
  }
}
@media (max-width:575.98px){
  .hero h1{font-size:29px;}
  .faq-accordion .accordion-button{font-size:16px;padding-right:38px;}
  .faq-accordion .accordion-body{padding-right:24px;}
}

/* roulang page: article */
:root{
  --bg-900:#05080F;
  --bg-800:#0A101C;
  --bg-700:#070C17;
  --brand-600:#2F5BFF;
  --brand-400:#5B84FF;
  --accent-500:#1FD0BE;
  --accent-300:#7BF0E3;
  --warn-400:#F2A93B;
  --text-100:#EAF0FA;
  --text-300:#A9B7CC;
  --text-500:#6E7E96;
  --line:rgba(255,255,255,.09);
  --surface:rgba(255,255,255,.045);
  --surface-2:rgba(255,255,255,.07);
  --radius-card:20px;
  --radius-btn:12px;
  --radius-img:16px;
  --shadow-1:0 12px 30px -18px rgba(0,0,0,.9);
  --shadow-2:0 20px 44px -20px rgba(0,0,0,.95);
  --ease:cubic-bezier(.4,0,.2,1);
}
*{box-sizing:border-box}
html{scroll-behavior:smooth}
body{
  margin:0;
  background:var(--bg-900);
  color:var(--text-100);
  font-family:"PingFang SC","HarmonyOS Sans SC","Microsoft YaHei",system-ui,-apple-system,"Segoe UI",sans-serif;
  font-size:16px;
  line-height:1.85;
  font-variant-numeric:tabular-nums;
  -webkit-font-smoothing:antialiased;
}
img{max-width:100%;display:block}
a{color:var(--brand-400);text-decoration:none;transition:color .2s var(--ease)}
a:hover{color:var(--accent-300)}
a:focus-visible,button:focus-visible,input:focus-visible,textarea:focus-visible{outline:2px solid var(--brand-400);outline-offset:3px}
h1,h2,h3,h4{margin:0;font-weight:650;letter-spacing:.2px}
p{margin:0 0 1.15em}
ul,ol{margin:0 0 1.15em;padding-left:1.35em}
li{margin:.35em 0}
.container{width:100%;max-width:1200px;margin:0 auto;padding:0 24px}
section{scroll-margin-top:88px}
::selection{background:rgba(47,91,255,.35);color:#fff}
[id]{scroll-margin-top:88px}

/* ============ header / nav ============ */
.site-header{
  position:fixed;top:0;left:0;right:0;z-index:1000;
  height:72px;display:flex;align-items:center;
  background:linear-gradient(180deg,rgba(5,8,15,.92),rgba(5,8,15,.55));
  border-bottom:1px solid transparent;
  transition:background .24s var(--ease),border-color .24s var(--ease),backdrop-filter .24s var(--ease);
}
.site-header.is-scrolled{
  background:rgba(7,12,23,.72);
  backdrop-filter:blur(12px) saturate(140%);
  -webkit-backdrop-filter:blur(12px) saturate(140%);
  border-bottom-color:var(--line);
}
.header-inner{display:flex;align-items:center;gap:24px;height:72px}
.brand{display:flex;align-items:center;gap:10px;flex:0 0 auto}
.brand-text{font-size:18px;font-weight:700;color:var(--text-100);letter-spacing:.5px}
.brand:hover .brand-text{color:#fff}
.brand-mark{
  width:28px;height:28px;border-radius:9px;flex:0 0 auto;
  display:grid;grid-template-columns:1fr 1fr;gap:4px;padding:6px;
  background:linear-gradient(140deg,var(--brand-600),var(--accent-500));
  box-shadow:0 6px 18px -8px rgba(47,91,255,.9);
}
.brand-mark span{display:block;background:#05080F;border-radius:1px}
.brand-mark span:first-child{height:100%}
.brand-mark span:last-child{height:62%;align-self:end}
.nav-desktop{display:flex;align-items:center;gap:6px;margin-left:14px}
.nav-link{
  position:relative;display:inline-flex;align-items:center;height:40px;
  padding:0 12px;font-size:15px;color:var(--text-300);border-radius:10px;
  transition:color .2s var(--ease),background .2s var(--ease);
}
.nav-link:hover{color:var(--text-100);background:var(--surface)}
.nav-link.active{color:var(--text-100)}
.nav-link.active::after{
  content:"";position:absolute;left:12px;right:12px;bottom:2px;height:2px;border-radius:2px;
  background:linear-gradient(90deg,var(--brand-400),var(--accent-500));
}
.header-actions{margin-left:auto;display:flex;align-items:center;gap:10px}
.btn{
  display:inline-flex;align-items:center;justify-content:center;gap:8px;
  border:1px solid transparent;border-radius:var(--radius-btn);
  font-size:15px;font-weight:600;padding:12px 22px;line-height:1.2;
  cursor:pointer;transition:transform .2s var(--ease),box-shadow .2s var(--ease),background .2s var(--ease),color .2s var(--ease),border-color .2s var(--ease);
}
.btn-primary{
  background:linear-gradient(135deg,var(--brand-600),#3C6BFF);
  color:#fff;
  box-shadow:0 0 0 1px rgba(47,91,255,.5),0 10px 34px -12px rgba(47,91,255,.8);
}
.btn-primary:hover{filter:brightness(1.08);transform:translateY(-1px);color:#fff}
.btn-line{
  background:var(--surface);border-color:var(--line);color:var(--text-100);
}
.btn-line:hover{background:var(--surface-2);border-color:rgba(91,132,255,.45);color:#fff;transform:translateY(-1px)}
.btn-sm{padding:9px 16px;font-size:14px}
.nav-toggle{
  display:none;width:42px;height:42px;border-radius:12px;
  background:var(--surface);border:1px solid var(--line);color:var(--text-100);
}
.nav-toggle:hover{background:var(--surface-2)}

/* mobile drawer */
.drawer{
  position:fixed;inset:0;z-index:1200;background:#070C17;
  display:flex;flex-direction:column;padding:20px 22px 32px;
  transform:translateX(100%);opacity:0;pointer-events:none;
  transition:transform .26s var(--ease),opacity .26s var(--ease);
}
.drawer.is-open{transform:translateX(0);opacity:1;pointer-events:auto}
.drawer-head{display:flex;align-items:center;justify-content:space-between;margin-bottom:18px}
.drawer-close{
  width:42px;height:42px;border-radius:12px;background:var(--surface);
  border:1px solid var(--line);color:var(--text-100);
}
.drawer a.drawer-link{
  display:flex;align-items:center;justify-content:space-between;
  height:56px;padding:0 4px;font-size:17px;color:var(--text-100);
  border-bottom:1px solid var(--line);
}
.drawer a.drawer-link i{color:var(--text-500);font-size:13px}
.drawer-foot{margin-top:auto;padding-top:20px;border-top:1px solid var(--line);font-size:13px;color:var(--text-500)}

/* ============ page shell ============ */
.page{
  padding-top:118px;
  padding-bottom:96px;
  background:
    radial-gradient(900px 420px at 12% -5%,rgba(47,91,255,.20),transparent 62%),
    radial-gradient(700px 380px at 92% 6%,rgba(31,208,190,.13),transparent 60%),
    var(--bg-900);
}
.crumbs{font-size:12px;color:var(--text-500);display:flex;flex-wrap:wrap;align-items:center;gap:8px;margin-bottom:22px}
.crumbs a{color:var(--text-500)}
.crumbs a:hover{color:var(--accent-300)}
.crumbs .sep{opacity:.5}
.crumbs .now{color:var(--text-300);max-width:60ch;overflow:hidden;text-overflow:ellipsis;white-space:nowrap}
.article-head{max-width:800px;margin:0 auto}
.eyebrow{
  display:inline-flex;align-items:center;gap:8px;font-size:12px;letter-spacing:1px;
  color:var(--accent-300);background:rgba(31,208,190,.10);
  border:1px solid rgba(31,208,190,.28);border-radius:999px;padding:6px 14px;margin-bottom:18px;
}
.page-title{
  font-size:clamp(26px,4vw,40px);line-height:1.25;font-weight:700;color:#fff;margin-bottom:18px;
}
.meta-bar{
  display:flex;flex-wrap:wrap;align-items:center;gap:14px;
  font-size:13px;color:var(--text-500);
  padding-bottom:22px;border-bottom:1px solid var(--line);
}
.meta-bar .dot{width:4px;height:4px;border-radius:50%;background:var(--text-500);opacity:.6}
.badge-cat{
  display:inline-flex;align-items:center;gap:6px;font-size:12px;
  color:var(--accent-300);background:rgba(31,208,190,.1);
  border:1px solid rgba(31,208,190,.26);border-radius:999px;padding:4px 12px;
}
.layout{
  display:grid;grid-template-columns:minmax(0,1fr) 280px;gap:44px;
  align-items:start;margin-top:38px;
}

/* ============ article body ============ */
.article-body{
  max-width:800px;font-size:17px;line-height:1.9;color:var(--text-300);
  word-break:break-word;
}
.article-body > *{max-width:100%}
.article-body h2{
  position:relative;font-size:clamp(21px,2.6vw,27px);color:#fff;
  line-height:1.4;margin:2.1em 0 .85em;padding-left:16px;
}
.article-body h2::before{
  content:"";position:absolute;left:0;top:.18em;bottom:.18em;width:3px;border-radius:3px;
  background:linear-gradient(180deg,var(--brand-400),var(--accent-500));
  box-shadow:0 0 14px rgba(47,91,255,.75);
}
.article-body h3{
  position:relative;font-size:19px;color:var(--text-100);margin:1.8em 0 .7em;padding-left:14px;
}
.article-body h3::before{
  content:"";position:absolute;left:0;top:.2em;bottom:.2em;width:3px;border-radius:3px;
  background:linear-gradient(180deg,var(--accent-500),rgba(31,208,190,.25));
}
.article-body p{margin:0 0 1.25em}
.article-body a{color:var(--brand-400);text-decoration:underline;text-underline-offset:3px}
.article-body a:hover{color:var(--accent-300)}
.article-body ul,.article-body ol{padding-left:1.4em;margin:0 0 1.25em}
.article-body li::marker{color:var(--accent-500)}
.article-body blockquote{
  margin:1.6em 0;padding:18px 22px;border-left:3px solid var(--brand-400);
  background:var(--surface);border-radius:0 14px 14px 0;color:var(--text-100);
}
.article-body blockquote p:last-child{margin-bottom:0}
.article-body img{border-radius:var(--radius-img);margin:1.6em 0;box-shadow:var(--shadow-1)}
.article-body figure{margin:1.6em 0}
.article-body figcaption{font-size:12px;color:var(--text-500);text-align:center;margin-top:10px}
.article-body pre{
  background:#050810;border:1px solid var(--line);border-radius:14px;
  padding:18px;overflow-x:auto;font-size:14px;line-height:1.7;
  font-family:ui-monospace,SFMono-Regular,Menlo,Consolas,monospace;color:#CFE1FF;
}
.article-body code{
  font-family:ui-monospace,SFMono-Regular,Menlo,Consolas,monospace;
  font-size:.92em;background:var(--surface-2);border-radius:6px;padding:2px 6px;color:var(--accent-300);
}
.article-body pre code{background:none;padding:0;color:inherit}
.article-body table{width:100%;border-collapse:collapse;margin:1.6em 0;font-size:15px}
.article-body .table-wrap{overflow-x:auto;border:1px solid var(--line);border-radius:14px}
.article-body th,.article-body td{padding:12px 14px;border-bottom:1px solid var(--line);text-align:left}
.article-body th{background:var(--surface);color:var(--text-100);font-weight:600}
.article-body tbody tr:nth-child(even){background:rgba(255,255,255,.02)}
.article-body hr{border:none;border-top:1px solid var(--line);margin:2.2em 0}

.empty-state{
  max-width:560px;margin:12px auto 0;text-align:center;
  background:var(--surface);border:1px solid var(--line);border-radius:var(--radius-card);padding:44px 30px;
}
.empty-state i{font-size:26px;color:var(--brand-400)}
.empty-state h3{margin:16px 0 8px;font-size:19px;color:var(--text-100)}
.empty-state p{color:var(--text-500);font-size:14px;margin-bottom:20px}

/* ============ sidebar ============ */
.sidebar{position:sticky;top:96px;display:grid;gap:16px}
.side-card{
  position:relative;background:var(--surface);border:1px solid var(--line);
  border-radius:var(--radius-card);padding:22px;backdrop-filter:blur(14px) saturate(140%);
  box-shadow:var(--shadow-1);overflow:hidden;
}
.side-card::before{
  content:"";position:absolute;top:0;left:0;right:0;height:1px;
  background:linear-gradient(90deg,var(--brand-600),transparent);
}
.side-card h4{font-size:14px;color:var(--text-100);letter-spacing:1px;margin-bottom:14px}
.side-list{list-style:none;padding:0;margin:0;font-size:14px}
.side-list li{border-bottom:1px solid var(--line);padding:0}
.side-list li:last-child{border-bottom:none}
.side-list a{
  display:flex;align-items:center;justify-content:space-between;gap:10px;
  padding:11px 0;color:var(--text-300);
}
.side-list a:hover{color:var(--accent-300)}
.side-list a i{font-size:11px;color:var(--text-500)}
.side-note{font-size:13px;color:var(--text-500);line-height:1.75;margin:0}

/* ============ related ============ */
.related{margin-top:76px}
.section-head{margin-bottom:26px}
.section-head h2{font-size:clamp(22px,3vw,30px);color:#fff;line-height:1.3}
.section-head p{color:var(--text-500);font-size:14px;margin:8px 0 0}
.card-list{display:grid;grid-template-columns:repeat(3,minmax(0,1fr));gap:22px}
.news-card{
  position:relative;display:flex;flex-direction:column;
  background:var(--surface);border:1px solid var(--line);border-radius:var(--radius-card);
  padding:24px;box-shadow:var(--shadow-1);overflow:hidden;
  transition:transform .22s var(--ease),border-color .22s var(--ease),box-shadow .22s var(--ease);
}
.news-card::before{
  content:"";position:absolute;top:0;left:0;right:0;height:1px;
  background:linear-gradient(90deg,rgba(47,91,255,.9),transparent);
}
.news-card:hover{transform:translateY(-4px);border-color:rgba(91,132,255,.35);box-shadow:var(--shadow-2)}
.news-card h3{font-size:17px;line-height:1.5;color:var(--text-100);margin-bottom:10px}
.news-card p{font-size:14px;color:var(--text-500);margin-bottom:18px}
.news-card .card-foot{
  margin-top:auto;display:flex;align-items:center;justify-content:space-between;
  font-size:12px;color:var(--text-500);
}
.news-card .stretch{position:absolute;inset:0;z-index:2;text-indent:-9999px}
.btn-row{display:flex;flex-wrap:wrap;gap:14px;margin-top:34px}

/* ============ cta ============ */
.cta-band{
  margin-top:88px;
  background:
    radial-gradient(700px 300px at 15% 0%,rgba(47,91,255,.22),transparent 60%),
    radial-gradient(600px 300px at 88% 100%,rgba(31,208,190,.16),transparent 60%),
    var(--bg-800);
  border:1px solid var(--line);border-radius:26px;padding:52px 48px;
}
.cta-band h2{font-size:clamp(23px,3.2vw,32px);color:#fff;line-height:1.3;margin-bottom:12px}
.cta-band p{color:var(--text-300);max-width:62ch;margin-bottom:0}

/* ============ footer ============ */
.site-footer{
  background:var(--bg-700);border-top:1px solid var(--line);
  padding:70px 0 26px;margin-top:0;
}
.footer-grid{display:grid;grid-template-columns:1.5fr 1fr 1fr 1.1fr;gap:38px}
.footer-brand{display:flex;align-items:center;gap:10px;font-size:17px;font-weight:700;color:var(--text-100);margin-bottom:14px}
.footer-about{font-size:14px;color:var(--text-500);max-width:34ch;line-height:1.8}
.footer-col h4{font-size:14px;color:var(--text-100);margin-bottom:16px;letter-spacing:.5px}
.footer-col ul{list-style:none;padding:0;margin:0}
.footer-col li{margin:.55em 0}
.footer-col a{font-size:14px;color:var(--text-500)}
.footer-col a:hover{color:var(--accent-300)}
.footer-contact{font-size:14px;color:var(--text-500);line-height:1.9}
.qr{
  margin-top:16px;width:118px;height:118px;border-radius:14px;
  border:1px dashed var(--line);background:var(--surface);
  display:flex;align-items:center;justify-content:center;text-align:center;
  font-size:12px;color:var(--text-500);padding:12px;line-height:1.6;
}
.footer-bottom{
  margin-top:46px;padding-top:20px;border-top:1px solid var(--line);
  display:flex;flex-wrap:wrap;gap:12px;justify-content:space-between;
  font-size:12px;color:var(--text-500);
}

/* floating cta */
.float-cta{
  position:fixed;right:24px;bottom:28px;z-index:900;
  display:inline-flex;align-items:center;gap:10px;
  padding:13px 22px;border-radius:999px;font-size:14px;font-weight:600;color:#fff;
  background:linear-gradient(135deg,var(--brand-600),#3C6BFF);
  box-shadow:0 0 0 1px rgba(47,91,255,.5),0 14px 34px -14px rgba(47,91,255,.95);
  opacity:0;transform:translateY(12px);pointer-events:none;
  transition:opacity .24s var(--ease),transform .24s var(--ease),filter .2s var(--ease);
}
.float-cta.is-on{opacity:1;transform:translateY(0);pointer-events:auto}
.float-cta:hover{filter:brightness(1.08);color:#fff}

@media (max-width:1200px){
  .layout{grid-template-columns:minmax(0,1fr) 260px;gap:32px}
  .footer-grid{grid-template-columns:1.4fr 1fr 1fr;gap:30px}
}
@media (max-width:992px){
  .nav-desktop{display:none}
  .nav-toggle{display:inline-flex;align-items:center;justify-content:center}
  .layout{grid-template-columns:1fr}
  .sidebar{position:static;grid-template-columns:1fr 1fr;display:grid}
  .card-list{grid-template-columns:1fr 1fr}
  .footer-grid{grid-template-columns:1fr 1fr}
  .cta-band{padding:40px 30px}
}
@media (max-width:768px){
  .container{padding:0 18px}
  .page{padding-top:104px;padding-bottom:72px}
  .article-body{font-size:16.5px}
  .card-list{grid-template-columns:1fr}
  .sidebar{grid-template-columns:1fr}
  .footer-grid{grid-template-columns:1fr;gap:26px}
  .meta-bar{gap:10px}
  .float-cta{
    right:0;left:0;bottom:0;border-radius:0;justify-content:center;
    padding:16px 20px calc(16px + env(safe-area-inset-bottom));
    transform:translateY(100%);
  }
  .float-cta.is-on{transform:translateY(0)}
  body{padding-bottom:64px}
}
@media (max-width:576px){
  .header-actions .btn{display:none}
  .cta-band{padding:32px 22px;border-radius:20px}
  .btn{width:100%}
  .btn-row{flex-direction:column}
  .news-card{padding:20px}
}

/* roulang page: category1 */
:root{
  --bg-900:#05080F;
  --bg-800:#0A101C;
  --bg-700:#070C17;
  --brand-600:#2F5BFF;
  --brand-400:#5B84FF;
  --accent-500:#1FD0BE;
  --accent-300:#7BF0E3;
  --warn-400:#F2A93B;
  --text-100:#EAF0FA;
  --text-300:#A9B7CC;
  --text-500:#6E7E96;
  --line:rgba(255,255,255,.09);
  --surface:rgba(255,255,255,.045);
  --surface-2:rgba(255,255,255,.07);
  --r-card:20px;
  --r-btn:12px;
  --r-img:16px;
  --shadow-1:0 12px 30px -18px rgba(0,0,0,.9);
  --shadow-2:0 20px 44px -20px rgba(0,0,0,.95);
  --ease:cubic-bezier(.4,0,.2,1);
  --header-h:72px;
}

*,*::before,*::after{box-sizing:border-box;}
html{scroll-behavior:smooth;}
body{
  margin:0;
  padding-top:var(--header-h);
  background:var(--bg-900);
  color:var(--text-100);
  font-family:"PingFang SC","HarmonyOS Sans SC","Microsoft YaHei",system-ui,-apple-system,"Segoe UI",sans-serif;
  font-size:16px;
  line-height:1.85;
  -webkit-font-smoothing:antialiased;
  overflow-x:hidden;
}
body.no-scroll{overflow:hidden;}
img{max-width:100%;display:block;}
a{color:var(--brand-400);text-decoration:none;transition:color .2s var(--ease),text-decoration-color .2s var(--ease);}
a:hover{color:var(--accent-300);}
h1,h2,h3,h4{margin:0;font-weight:650;line-height:1.3;letter-spacing:.2px;}
p{margin:0 0 1.1em;}
ul,ol{margin:0;padding:0;list-style:none;}
button{font-family:inherit;}
:focus-visible{outline:2px solid var(--brand-400);outline-offset:3px;border-radius:6px;}
::selection{background:rgba(47,91,255,.4);color:#fff;}

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

/* ---------- 通用按钮 ---------- */
.btn{
  display:inline-flex;align-items:center;justify-content:center;gap:8px;
  font-size:15px;font-weight:600;line-height:1;
  padding:13px 24px;border-radius:var(--r-btn);
  border:1px solid transparent;background:transparent;color:var(--text-100);
  cursor:pointer;text-decoration:none;white-space:nowrap;
  transition:transform .2s var(--ease),box-shadow .2s var(--ease),background .2s var(--ease),color .2s var(--ease),border-color .2s var(--ease);
}
.btn:hover{color:var(--text-100);}
.btn-brand{
  background:linear-gradient(135deg,var(--brand-600),#2246D6);
  color:#fff;
  box-shadow:0 0 0 1px rgba(47,91,255,.5),0 10px 34px -12px rgba(47,91,255,.8);
}
.btn-brand:hover{color:#fff;transform:translateY(-1px);filter:brightness(1.08);}
.btn-line{
  border-color:var(--line);
  background:var(--surface);
  color:var(--text-300);
  backdrop-filter:blur(10px) saturate(140%);
}
.btn-line:hover{border-color:rgba(91,132,255,.5);color:var(--text-100);transform:translateY(-1px);}
.btn-sm{padding:9px 16px;font-size:13.5px;}

/* ---------- 顶部导航 ---------- */
.site-header{
  position:fixed;top:0;left:0;right:0;z-index:1000;
  height:var(--header-h);
  background:rgba(5,8,15,.72);
  border-bottom:1px solid transparent;
  transition:background .25s var(--ease),border-color .25s var(--ease),backdrop-filter .25s var(--ease);
}
.site-header.is-scrolled{
  background:rgba(7,12,23,.78);
  backdrop-filter:blur(12px) saturate(150%);
  border-bottom-color:var(--line);
}
.header-inner{display:flex;align-items:center;justify-content:space-between;gap:20px;height:var(--header-h);}
.brand{display:inline-flex;align-items:center;gap:10px;color:var(--text-100);font-weight:700;font-size:18px;letter-spacing:.4px;}
.brand:hover{color:var(--text-100);}
.brand-mark{position:relative;display:inline-block;width:26px;height:26px;flex:0 0 26px;}
.brand-mark span{position:absolute;display:block;border-radius:3px;}
.brand-mark span:first-child{width:6px;height:20px;left:2px;top:3px;background:linear-gradient(180deg,var(--brand-400),var(--brand-600));}
.brand-mark span:last-child{width:6px;height:20px;right:2px;top:3px;background:linear-gradient(180deg,var(--accent-300),var(--accent-500));}
.brand-mark::after{content:"";position:absolute;left:6px;right:6px;top:11px;height:4px;background:var(--text-100);opacity:.85;border-radius:2px;}
.brand-text{white-space:nowrap;}

.nav-desktop{display:flex;align-items:center;gap:6px;}
.nav-link{
  position:relative;
  padding:8px 14px;border-radius:10px;
  color:var(--text-300);font-size:14.5px;font-weight:500;
  transition:color .2s var(--ease),background .2s var(--ease);
}
.nav-link::after{
  content:"";position:absolute;left:14px;right:14px;bottom:2px;height:2px;border-radius:2px;
  background:linear-gradient(90deg,var(--brand-400),var(--accent-500));
  transform:scaleX(0);transform-origin:left;transition:transform .22s var(--ease);
}
.nav-link:hover{color:var(--text-100);background:var(--surface);}
.nav-link:hover::after{transform:scaleX(1);}
.nav-link.active{color:var(--text-100);}
.nav-link.active::after{transform:scaleX(1);}

.header-actions{display:flex;align-items:center;gap:12px;}
.nav-toggle{
  display:none;align-items:center;justify-content:center;
  width:42px;height:42px;border-radius:12px;
  border:1px solid var(--line);background:var(--surface);color:var(--text-100);
  font-size:17px;cursor:pointer;transition:border-color .2s var(--ease),background .2s var(--ease);
}
.nav-toggle:hover{border-color:rgba(91,132,255,.5);}

/* ---------- 移动抽屉 ---------- */
.mobile-drawer{
  position:fixed;inset:0;z-index:1100;
  background:#05080F;
  transform:translateX(100%);
  transition:transform .28s var(--ease);
  display:flex;flex-direction:column;
  padding:18px 22px 28px;
  overflow-y:auto;
}
.mobile-drawer.open{transform:translateX(0);}
.drawer-head{display:flex;align-items:center;justify-content:space-between;margin-bottom:22px;height:44px;}
.drawer-close{
  width:42px;height:42px;border-radius:12px;border:1px solid var(--line);
  background:var(--surface);color:var(--text-100);font-size:18px;cursor:pointer;
}
.drawer-nav{display:flex;flex-direction:column;}
.drawer-nav a{
  display:flex;align-items:center;justify-content:space-between;
  height:56px;padding:0 4px;
  color:var(--text-300);font-size:16px;font-weight:500;
  border-bottom:1px solid var(--line);
}
.drawer-nav a.active,.drawer-nav a:hover{color:var(--text-100);}
.drawer-nav a.active::before{content:"";width:3px;height:18px;border-radius:2px;background:linear-gradient(180deg,var(--brand-400),var(--accent-500));margin-right:10px;}
.drawer-nav a i{color:var(--text-500);font-size:13px;}
.drawer-foot{margin-top:auto;padding-top:26px;}
.drawer-foot .btn{width:100%;}

/* ---------- 页面 Hero ---------- */
.page-hero{
  position:relative;
  padding:88px 0 72px;
  background-image:linear-gradient(180deg,rgba(5,8,15,.82),rgba(5,8,15,.94)),url('/assets/images/backpic/back-2.webp');
  background-size:cover;
  background-position:center;
  border-bottom:1px solid var(--line);
  overflow:hidden;
}
.hero-glow,.hero-glow-2{
  position:absolute;pointer-events:none;border-radius:50%;
}
.hero-glow{width:620px;height:620px;top:-300px;right:-160px;background:radial-gradient(circle,rgba(47,91,255,.34),transparent 68%);}
.hero-glow-2{width:520px;height:520px;bottom:-320px;left:-180px;background:radial-gradient(circle,rgba(31,208,190,.2),transparent 70%);}
.page-hero .container{position:relative;z-index:2;}
.crumb{display:flex;align-items:center;gap:8px;font-size:12px;color:var(--text-500);margin-bottom:20px;}
.crumb a{color:var(--text-500);}
.crumb a:hover{color:var(--accent-300);}
.crumb .current{color:var(--text-300);}
.tag{
  display:inline-flex;align-items:center;gap:7px;
  padding:5px 13px;border-radius:999px;font-size:12px;letter-spacing:.6px;
  color:var(--accent-300);background:rgba(31,208,190,.1);
  border:1px solid rgba(31,208,190,.28);
}
.tag::before{content:"";width:6px;height:6px;border-radius:50%;background:var(--accent-500);box-shadow:0 0 10px var(--accent-500);}
.page-hero h1{
  margin:20px 0 16px;
  font-size:clamp(30px,5vw,52px);
  line-height:1.15;font-weight:700;letter-spacing:.5px;
  max-width:900px;
}
.hero-sub{font-size:clamp(15px,1.6vw,18px);color:var(--text-300);max-width:640px;margin-bottom:30px;}
.hero-actions{display:flex;flex-wrap:wrap;gap:14px;}
.hero-meta{
  display:grid;grid-template-columns:repeat(4,minmax(0,1fr));
  gap:16px;margin-top:44px;padding-top:26px;border-top:1px solid var(--line);
}
.hero-meta div{font-size:13px;color:var(--text-500);}
.hero-meta strong{display:block;font-size:20px;font-weight:700;color:var(--text-100);font-variant-numeric:tabular-nums;margin-bottom:2px;}
.hero-meta strong i{color:var(--accent-500);font-size:15px;margin-right:6px;}

/* ---------- 板块通用 ---------- */
.section{padding:96px 0;scroll-margin-top:88px;}
.section-alt{background:var(--bg-700);border-top:1px solid var(--line);border-bottom:1px solid var(--line);}
.section-head{max-width:760px;margin-bottom:48px;}
.section-head h2{font-size:clamp(24px,3.4vw,34px);line-height:1.25;margin-bottom:14px;}
.section-head p{color:var(--text-300);font-size:15.5px;margin:0;}
.eyebrow{
  display:inline-block;font-size:12px;letter-spacing:1.4px;
  color:var(--brand-400);text-transform:uppercase;margin-bottom:12px;
}

/* ---------- 目录索引布局 ---------- */
.anchor-layout{display:grid;grid-template-columns:264px minmax(0,1fr);gap:56px;align-items:start;}
.toc{
  position:sticky;top:calc(var(--header-h) + 28px);
  padding:24px 22px;
  border-radius:var(--r-card);
  background:var(--surface);
  border:1px solid var(--line);
  backdrop-filter:blur(14px) saturate(140%);
  box-shadow:var(--shadow-1);
}
.toc::before{
  content:"";position:absolute;left:0;right:0;top:0;height:1px;
  background:linear-gradient(90deg,var(--brand-400),transparent);
}
.toc-title{font-size:13px;letter-spacing:1px;color:var(--text-500);margin-bottom:16px;font-weight:600;}
.toc nav{display:flex;flex-direction:column;gap:2px;}
.toc-link{
  display:flex;align-items:flex-start;gap:10px;
  padding:9px 10px;border-radius:10px;
  font-size:14px;color:var(--text-300);line-height:1.5;
  border-left:2px solid transparent;
  transition:background .2s var(--ease),color .2s var(--ease),border-color .2s var(--ease);
}
.toc-link span{font-size:12px;color:var(--text-500);font-variant-numeric:tabular-nums;padding-top:1px;}
.toc-link:hover{background:var(--surface-2);color:var(--text-100);border-left-color:rgba(91,132,255,.5);}
.toc-link.active{background:rgba(47,91,255,.14);color:var(--text-100);border-left-color:var(--brand-400);}
.toc-link.active span{color:var(--accent-300);}

.article-flow{display:flex;flex-direction:column;gap:56px;}
.sec{scroll-margin-top:96px;}
.sec-head{display:flex;align-items:flex-start;gap:16px;margin-bottom:20px;}
.sec-no{
  flex:0 0 auto;margin-top:3px;
  font-size:13px;font-weight:700;font-variant-numeric:tabular-nums;
  color:var(--accent-300);
  padding:4px 10px;border-radius:999px;
  background:rgba(31,208,190,.1);border:1px solid rgba(31,208,190,.26);
}
.sec h2{font-size:clamp(21px,2.6vw,28px);line-height:1.3;}
.sec h3{font-size:19px;margin:26px 0 10px;font-weight:600;}
.sec p{color:var(--text-300);font-size:16.5px;}
.sec p:last-child{margin-bottom:0;}

.notice{
  margin-top:20px;padding:16px 18px;
  border-radius:14px;border:1px solid var(--line);
  border-left:3px solid var(--brand-400);
  background:var(--surface);color:var(--text-300);font-size:14.5px;
}
.notice i{color:var(--brand-400);margin-right:8px;}

.def-list{display:flex;flex-direction:column;gap:12px;margin-top:22px;}
.def-row{
  display:grid;grid-template-columns:200px minmax(0,1fr);
  gap:18px;padding:16px 18px;border-radius:14px;
  background:var(--surface);border:1px solid var(--line);
  transition:border-color .2s var(--ease),background .2s var(--ease),transform .2s var(--ease);
}
.def-row:hover{border-color:rgba(91,132,255,.35);background:var(--surface-2);transform:translateY(-2px);}
.def-row .k{font-size:15px;font-weight:600;color:var(--text-100);display:flex;align-items:center;gap:9px;}
.def-row .k i{color:var(--accent-500);font-size:14px;}
.def-row .v{font-size:14.5px;color:var(--text-300);margin:0;}

.steps{position:relative;margin-top:26px;padding-left:26px;}
.steps::before{content:"";position:absolute;left:7px;top:8px;bottom:8px;width:1px;background:linear-gradient(180deg,var(--brand-400),rgba(31,208,190,.4),transparent);}
.step{position:relative;padding-bottom:26px;}
.step:last-child{padding-bottom:0;}
.step::before{
  content:"";position:absolute;left:-26px;top:7px;width:15px;height:15px;border-radius:50%;
  background:var(--bg-900);border:2px solid var(--brand-400);box-shadow:0 0 0 4px rgba(47,91,255,.12);
}
.step .s-label{font-size:12px;letter-spacing:1px;color:var(--accent-300);display:block;margin-bottom:4px;}
.step h3{font-size:17px;margin:0 0 6px;}
.step p{font-size:15px;margin:0;color:var(--text-300);}

.figure-block{
  margin-top:26px;border-radius:var(--r-card);overflow:hidden;
  border:1px solid var(--line);background:var(--bg-800);
  box-shadow:var(--shadow-1);
}
.figure-block img{width:100%;aspect-ratio:16/9;object-fit:cover;transition:transform .5s var(--ease);}
.figure-block:hover img{transform:scale(1.03);}
.figure-block figcaption{padding:12px 18px;font-size:12.5px;color:var(--text-500);border-top:1px solid var(--line);}

.chip-row{display:flex;flex-wrap:wrap;gap:10px;margin-top:20px;}
.chip{
  padding:6px 13px;border-radius:999px;font-size:12.5px;
  color:var(--text-300);background:var(--surface);border:1px solid var(--line);
}
.chip.on{color:var(--accent-300);border-color:rgba(31,208,190,.3);background:rgba(31,208,190,.08);}

/* ---------- 适用场景 ---------- */
.scene-grid{display:grid;grid-template-columns:repeat(2,minmax(0,1fr));gap:22px;}
.scene-card{
  position:relative;padding:28px 26px;border-radius:var(--r-card);
  background:var(--surface);border:1px solid var(--line);
  backdrop-filter:blur(14px) saturate(140%);
  box-shadow:var(--shadow-1);
  transition:transform .24s var(--ease),border-color .24s var(--ease),box-shadow .24s var(--ease);
}
.scene-card::before{
  content:"";position:absolute;left:0;right:0;top:0;height:1px;
  background:linear-gradient(90deg,var(--brand-400),transparent);
}
.scene-card:hover{transform:translateY(-4px);border-color:rgba(91,132,255,.35);box-shadow:var(--shadow-2);}
.scene-card i{font-size:20px;color:var(--accent-500);margin-bottom:14px;display:block;}
.scene-card h3{font-size:18px;margin-bottom:10px;}
.scene-card p{font-size:14.5px;color:var(--text-300);margin:0;}

/* ---------- 数值卡 ---------- */
.stat-track{display:grid;grid-template-columns:repeat(4,minmax(0,1fr));gap:18px;margin-top:26px;}
.stat-card{
  padding:22px;border-radius:18px;background:var(--surface);
  border:1px solid var(--line);box-shadow:var(--shadow-1);
}
.stat-card .num{
  font-size:30px;font-weight:700;color:var(--accent-500);
  font-variant-numeric:tabular-nums;line-height:1.1;
}
.stat-card .num small{font-size:14px;color:var(--text-300);margin-left:4px;font-weight:500;}
.stat-card p{font-size:13.5px;color:var(--text-500);margin:8px 0 0;}

/* ---------- FAQ ---------- */
.faq-list{border-top:1px solid var(--line);margin-top:8px;}
.faq-item{border-bottom:1px solid var(--line);}
.faq-q{
  width:100%;display:flex;align-items:center;justify-content:space-between;gap:18px;
  padding:22px 4px;background:none;border:0;cursor:pointer;text-align:left;
  color:var(--text-100);font-size:17px;font-weight:600;line-height:1.5;
  transition:color .2s var(--ease);
}
.faq-q:hover{color:var(--accent-300);}
.faq-icon{position:relative;flex:0 0 18px;width:18px;height:18px;}
.faq-icon::before,.faq-icon::after{
  content:"";position:absolute;background:var(--brand-400);border-radius:2px;
  transition:transform .25s var(--ease),background .25s var(--ease);
}
.faq-icon::before{left:0;right:0;top:8px;height:2px;}
.faq-icon::after{top:0;bottom:0;left:8px;width:2px;}
.faq-item.open .faq-icon::after{transform:scaleY(0);}
.faq-item.open .faq-icon::before{background:var(--accent-500);}
.faq-a{max-height:0;overflow:hidden;transition:max-height .3s var(--ease);}
.faq-a-inner{padding:0 4px 24px 0;border-left:3px solid transparent;padding-left:0;}
.faq-item.open .faq-a-inner{border-left:3px solid var(--brand-400);padding-left:16px;box-shadow:-1px 0 12px -6px rgba(47,91,255,.9);}
.faq-a-inner p{font-size:15px;color:var(--text-300);margin:0;}

/* ---------- CTA ---------- */
.cta-band{
  position:relative;overflow:hidden;
  padding:52px 48px;border-radius:26px;
  background:linear-gradient(135deg,rgba(47,91,255,.16),rgba(31,208,190,.08)),var(--bg-800);
  border:1px solid var(--line);
  box-shadow:var(--shadow-1);
  display:grid;grid-template-columns:minmax(0,1fr) auto;gap:32px;align-items:center;
}
.cta-band::after{
  content:"";position:absolute;width:440px;height:440px;right:-160px;top:-200px;
  background:radial-gradient(circle,rgba(47,91,255,.3),transparent 68%);pointer-events:none;
}
.cta-band h2{font-size:clamp(22px,3vw,30px);margin-bottom:12px;position:relative;z-index:2;}
.cta-band p{color:var(--text-300);font-size:15.5px;margin:0;max-width:620px;position:relative;z-index:2;}
.cta-actions{display:flex;flex-wrap:wrap;gap:14px;position:relative;z-index:2;}

/* ---------- 页脚 ---------- */
.site-footer{
  background:var(--bg-800);
  border-top:1px solid var(--line);
  padding:72px 0 0;
  margin-top:24px;
}
.footer-grid{display:grid;grid-template-columns:1.5fr 1fr 1fr 1fr;gap:40px;}
.footer-brand{display:flex;align-items:center;gap:10px;font-size:18px;font-weight:700;margin-bottom:16px;}
.footer-about{font-size:14px;color:var(--text-500);line-height:1.9;max-width:340px;margin:0;}
.footer-col h4{font-size:14px;font-weight:600;color:var(--text-100);margin-bottom:18px;letter-spacing:.4px;}
.footer-col ul{display:flex;flex-direction:column;gap:11px;}
.footer-col ul a{font-size:14px;color:var(--text-500);}
.footer-col ul a:hover{color:var(--accent-300);}
.footer-contact{font-size:13.5px;color:var(--text-500);line-height:1.9;}
.qr{
  margin-top:14px;width:112px;height:112px;border-radius:14px;
  border:1px dashed rgba(255,255,255,.18);background:var(--surface);
  display:flex;align-items:center;justify-content:center;text-align:center;
  font-size:12px;color:var(--text-500);line-height:1.6;padding:8px;
}
.footer-bottom{
  margin-top:56px;padding:22px 0;border-top:1px solid var(--line);
  display:flex;flex-wrap:wrap;justify-content:space-between;gap:12px;
  font-size:12.5px;color:var(--text-500);
}

/* ---------- 响应式 ---------- */
@media (max-width:1200px){
  .anchor-layout{grid-template-columns:228px minmax(0,1fr);gap:40px;}
}
@media (max-width:992px){
  .nav-desktop{display:none;}
  .nav-toggle{display:inline-flex;}
  .anchor-layout{grid-template-columns:minmax(0,1fr);gap:32px;}
  .toc{position:static;padding:18px;}
  .toc nav{flex-direction:row;overflow-x:auto;gap:8px;padding-bottom:4px;}
  .toc-link{flex:0 0 auto;border-left:0;border:1px solid var(--line);border-radius:999px;padding:7px 14px;font-size:13px;}
  .toc-link.active{border-color:rgba(91,132,255,.5);}
  .scene-grid{grid-template-columns:minmax(0,1fr);}
  .stat-track{grid-template-columns:repeat(2,minmax(0,1fr));}
  .section{padding:72px 0;}
  .def-row{grid-template-columns:minmax(0,1fr);gap:8px;}
  .cta-band{grid-template-columns:minmax(0,1fr);padding:40px 30px;}
  .footer-grid{grid-template-columns:repeat(2,minmax(0,1fr));gap:34px;}
}
@media (max-width:768px){
  .header-actions .btn-line{display:none;}
  .hero-meta{grid-template-columns:repeat(2,minmax(0,1fr));gap:18px;}
  .page-hero{padding:64px 0 56px;}
  .section{padding:56px 0;}
  .sec h3{font-size:17px;}
}
@media (max-width:520px){
  .container{padding-left:18px;padding-right:18px;}
  body{font-size:15.5px;}
  .stat-track{grid-template-columns:minmax(0,1fr);}
  .footer-grid{grid-template-columns:minmax(0,1fr);}
  .hero-actions .btn{flex:1 1 100%;}
  .faq-q{font-size:15.5px;padding:18px 2px;}
  .cta-band{padding:32px 22px;border-radius:20px;}
}

/* roulang page: category2 */
:root{
  --bg-900:#05080F;
  --bg-800:#0A101C;
  --bg-700:#070C17;
  --brand-600:#2F5BFF;
  --brand-400:#5B84FF;
  --accent-500:#1FD0BE;
  --accent-300:#7BF0E3;
  --warn-400:#F2A93B;
  --text-100:#EAF0FA;
  --text-300:#A9B7CC;
  --text-500:#6E7E96;
  --line:rgba(255,255,255,.09);
  --surface:rgba(255,255,255,.045);
  --surface-2:rgba(255,255,255,.07);
  --radius-card:20px;
  --radius-btn:12px;
  --radius-img:16px;
  --radius-pill:999px;
  --shadow:0 12px 30px -18px rgba(0,0,0,.9);
  --shadow-hover:0 20px 44px -20px rgba(0,0,0,.95);
  --container:1200px;
  --font-cn:"PingFang SC","HarmonyOS Sans SC","Microsoft YaHei",system-ui,-apple-system,"Segoe UI",sans-serif;
  --bs-primary:#2F5BFF;
  --bs-body-bg:#05080F;
  --bs-body-color:#EAF0FA;
  --bs-link-color:#5B84FF;
  --bs-link-hover-color:#7BF0E3;
  --bs-border-color:rgba(255,255,255,.09);
}
*{box-sizing:border-box}
html{scroll-behavior:smooth}
body{
  margin:0;
  background:var(--bg-900);
  color:var(--text-100);
  font-family:var(--font-cn);
  font-size:16px;
  line-height:1.85;
  -webkit-font-smoothing:antialiased;
  font-variant-numeric:tabular-nums;
  overflow-x:hidden;
}
img{max-width:100%;display:block}
a{color:var(--brand-400);text-decoration:none;transition:color .2s cubic-bezier(.4,0,.2,1),text-underline-offset .2s}
a:hover{color:var(--accent-300);text-underline-offset:3px}
ul,ol{margin:0;padding:0;list-style:none}
h1,h2,h3,h4{margin:0;font-weight:650;letter-spacing:.01em}
p{margin:0}
:focus-visible{outline:2px solid var(--brand-600);outline-offset:3px;border-radius:6px}
.container{max-width:var(--container);margin:0 auto;padding:0 24px;width:100%}
section{scroll-margin-top:88px}

/* ---------- header ---------- */
.site-header{
  position:fixed;top:0;left:0;right:0;z-index:1000;
  height:72px;
  background:rgba(5,8,15,.72);
  border-bottom:1px solid transparent;
  transition:background .24s cubic-bezier(.4,0,.2,1),backdrop-filter .24s,border-color .24s,height .24s;
}
.site-header.scrolled{
  background:rgba(7,12,23,.82);
  backdrop-filter:blur(12px) saturate(140%);
  -webkit-backdrop-filter:blur(12px) saturate(140%);
  border-bottom-color:var(--line);
}
.header-inner{height:72px;display:flex;align-items:center;justify-content:space-between;gap:24px}
.brand{display:flex;align-items:center;gap:10px;color:var(--text-100);font-weight:700;font-size:18px;letter-spacing:.02em}
.brand:hover{color:var(--text-100)}
.brand-mark{display:inline-flex;flex-direction:column;gap:4px;width:22px}
.brand-mark span{display:block;height:6px;border-radius:2px;background:linear-gradient(90deg,var(--brand-600),var(--accent-500))}
.brand-mark span:last-child{width:64%}
.nav-desktop{display:flex;align-items:center;gap:6px}
.nav-link{
  position:relative;display:inline-block;padding:8px 14px;border-radius:var(--radius-btn);
  font-size:15px;color:var(--text-300);
  transition:color .2s cubic-bezier(.4,0,.2,1),background .2s cubic-bezier(.4,0,.2,1);
}
.nav-link::after{
  content:"";position:absolute;left:14px;right:14px;bottom:2px;height:2px;border-radius:2px;
  background:linear-gradient(90deg,var(--brand-600),var(--accent-500));
  transform:scaleX(0);transform-origin:left;transition:transform .24s cubic-bezier(.4,0,.2,1);
}
.nav-link:hover{color:var(--text-100);background:var(--surface)}
.nav-link:hover::after{transform:scaleX(1)}
.nav-link.active{color:var(--text-100)}
.nav-link.active::after{transform:scaleX(1)}
.header-actions{display:flex;align-items:center;gap:12px}
.nav-toggle{
  display:none;width:44px;height:44px;border-radius:var(--radius-btn);
  background:var(--surface);border:1px solid var(--line);color:var(--text-100);
  font-size:18px;align-items:center;justify-content:center;cursor:pointer;
  transition:background .2s,border-color .2s;
}
.nav-toggle:hover{background:var(--surface-2);border-color:rgba(91,132,255,.35)}

/* ---------- buttons ---------- */
.btn{
  display:inline-flex;align-items:center;justify-content:center;gap:8px;
  font-family:var(--font-cn);font-size:15px;font-weight:600;
  padding:13px 24px;border-radius:var(--radius-btn);border:1px solid transparent;
  cursor:pointer;transition:all .22s cubic-bezier(.4,0,.2,1);white-space:nowrap;
}
.btn-glow{
  background:linear-gradient(135deg,var(--brand-600),#3E6BFF);
  color:#fff;border-color:rgba(47,91,255,.5);
  box-shadow:0 0 0 1px rgba(47,91,255,.5),0 10px 34px -12px rgba(47,91,255,.8);
}
.btn-glow:hover{color:#fff;filter:brightness(1.08);transform:translateY(-1px)}
.btn-line{
  background:var(--surface);color:var(--text-100);border-color:var(--line);
  backdrop-filter:blur(10px);
}
.btn-line:hover{color:var(--text-100);border-color:rgba(91,132,255,.45);background:var(--surface-2);transform:translateY(-1px)}
.btn-sm{padding:9px 16px;font-size:14px}
.btn-block{width:100%}

/* ---------- badges & tags ---------- */
.badge-soft{
  display:inline-flex;align-items:center;gap:6px;
  padding:5px 12px;border-radius:var(--radius-pill);font-size:12px;
  background:rgba(31,208,190,.12);color:var(--accent-300);
  border:1px solid rgba(31,208,190,.28);letter-spacing:.02em;
}
.badge-line{
  display:inline-flex;align-items:center;gap:6px;
  padding:5px 12px;border-radius:var(--radius-pill);font-size:12px;
  background:var(--surface);color:var(--text-300);border:1px solid var(--line);
}
.badge-warn{
  display:inline-flex;align-items:center;gap:6px;
  padding:5px 12px;border-radius:var(--radius-pill);font-size:12px;
  background:rgba(242,169,59,.12);color:var(--warn-400);border:1px solid rgba(242,169,59,.3);
}
.eyebrow{
  display:inline-flex;align-items:center;gap:8px;
  font-size:12px;letter-spacing:.16em;color:var(--accent-300);
  text-transform:uppercase;margin-bottom:18px;
}
.eyebrow::before{content:"";width:26px;height:1px;background:linear-gradient(90deg,var(--accent-500),transparent)}

/* ---------- hero ---------- */
.page-hero{
  position:relative;
  padding:158px 0 96px;
  background-color:var(--bg-900);
  background-image:linear-gradient(180deg,rgba(5,8,15,.86) 0%,rgba(5,8,15,.94) 58%,var(--bg-900) 100%),url('/assets/images/backpic/back-2.webp');
  background-size:cover;
  background-position:center;
  overflow:hidden;
}
.page-hero::before{
  content:"";position:absolute;inset:0;
  background-image:radial-gradient(circle at 18% 22%,rgba(47,91,255,.28),transparent 46%),
                   radial-gradient(circle at 82% 68%,rgba(31,208,190,.18),transparent 48%);
  pointer-events:none;
}
.page-hero::after{
  content:"";position:absolute;inset:0;
  background-image:linear-gradient(rgba(255,255,255,.035) 1px,transparent 1px),
                   linear-gradient(90deg,rgba(255,255,255,.035) 1px,transparent 1px);
  background-size:56px 56px;
  mask-image:linear-gradient(180deg,rgba(0,0,0,.7),transparent 78%);
  -webkit-mask-image:linear-gradient(180deg,rgba(0,0,0,.7),transparent 78%);
  pointer-events:none;
}
.page-hero .container{position:relative;z-index:2}
.crumbs{font-size:12px;color:var(--text-500);margin-bottom:22px;display:flex;flex-wrap:wrap;align-items:center;gap:8px}
.crumbs a{color:var(--text-500)}
.crumbs a:hover{color:var(--accent-300)}
.crumbs span.sep{color:var(--text-500);opacity:.6}
.crumbs span.current{color:var(--text-300)}
.hero-grid{display:grid;grid-template-columns:1.15fr .85fr;gap:56px;align-items:center}
h1.hero-title{
  font-size:clamp(30px,4.4vw,48px);line-height:1.18;font-weight:700;letter-spacing:-.01em;
  margin-bottom:18px;
}
h1.hero-title em{
  font-style:normal;
  background:linear-gradient(100deg,var(--brand-400),var(--accent-300));
  -webkit-background-clip:text;background-clip:text;color:transparent;
}
.hero-sub{font-size:17px;color:var(--text-300);margin-bottom:14px}
.hero-lead{font-size:15px;color:var(--text-500);max-width:560px;margin-bottom:30px;line-height:1.9}
.hero-actions{display:flex;flex-wrap:wrap;gap:14px;margin-bottom:38px}
.trust-bar{
  display:grid;grid-template-columns:repeat(4,minmax(0,1fr));gap:14px;
  padding-top:26px;border-top:1px solid var(--line);
}
.trust-item{display:flex;flex-direction:column;gap:2px}
.trust-item i{color:var(--accent-500);font-size:14px;margin-bottom:6px}
.trust-item .tv{font-size:18px;font-weight:700;color:var(--text-100)}
.trust-item .tl{font-size:12px;color:var(--text-500)}
.hero-visual{
  position:relative;border-radius:var(--radius-card);overflow:hidden;
  border:1px solid var(--line);background:var(--surface);
  box-shadow:var(--shadow-hover);
}
.hero-visual img{width:100%;height:340px;object-fit:cover;opacity:.92}
.hero-visual .hv-caption{
  position:absolute;left:0;right:0;bottom:0;padding:16px 18px;
  background:linear-gradient(180deg,transparent,rgba(5,8,15,.92));
  font-size:13px;color:var(--text-300);
}
.hero-visual .hv-tag{
  position:absolute;top:16px;left:16px;
}

/* ---------- section shell ---------- */
.section{padding:104px 0}
.section-alt{background:var(--bg-700)}
.section-head{max-width:760px;margin-bottom:52px}
.section-head h2{font-size:clamp(24px,3.4vw,34px);line-height:1.28;margin-bottom:14px}
.section-head p{color:var(--text-300);font-size:16px}
.section-head.center{margin-left:auto;margin-right:auto;text-align:center}

/* ---------- feature mosaic ---------- */
.mosaic{display:grid;grid-template-columns:1.2fr 1fr;gap:24px}
.card{
  position:relative;border-radius:var(--radius-card);
  background:var(--surface);border:1px solid var(--line);
  backdrop-filter:blur(14px) saturate(140%);
  -webkit-backdrop-filter:blur(14px) saturate(140%);
  box-shadow:var(--shadow);
  transition:transform .22s cubic-bezier(.4,0,.2,1),border-color .22s,box-shadow .22s;
  overflow:hidden;
}
.card::before{
  content:"";position:absolute;top:0;left:0;right:0;height:1px;
  background:linear-gradient(90deg,var(--brand-600),transparent 70%);
  opacity:.85;
}
.card:hover{transform:translateY(-4px);border-color:rgba(91,132,255,.35);box-shadow:var(--shadow-hover)}
.card-body{padding:30px}
.card-body h3{font-size:20px;margin-bottom:12px}
.card-body p{color:var(--text-300);font-size:15px;line-height:1.85}
.card-feature{padding:0;display:flex;flex-direction:column}
.card-feature img{width:100%;height:210px;object-fit:cover;border-bottom:1px solid var(--line)}
.mosaic-side{display:grid;grid-template-rows:1fr 1fr;gap:24px}
.inline-link{
  display:inline-flex;align-items:center;gap:8px;margin-top:18px;
  font-size:14px;font-weight:600;color:var(--accent-300);
}
.inline-link i{transition:transform .2s cubic-bezier(.4,0,.2,1)}
.inline-link:hover i{transform:translateX(4px)}
.mini-list{margin-top:16px;display:flex;flex-direction:column;gap:10px}
.mini-list li{display:flex;gap:10px;font-size:14px;color:var(--text-300)}
.mini-list li i{color:var(--accent-500);margin-top:5px;font-size:12px}

/* ---------- timeline ---------- */
.timeline{position:relative;padding:10px 0 0}
.timeline::before{
  content:"";position:absolute;left:50%;top:0;bottom:0;width:1px;transform:translateX(-.5px);
  background:linear-gradient(180deg,transparent,rgba(47,91,255,.55) 10%,rgba(31,208,190,.4) 88%,transparent);
}
.tl-item{
  position:relative;display:grid;grid-template-columns:1fr 96px 1fr;
  align-items:center;margin-bottom:44px;
}
.tl-item:last-child{margin-bottom:0}
.tl-card{
  border-radius:var(--radius-card);border:1px solid var(--line);
  background:var(--surface);backdrop-filter:blur(14px) saturate(140%);
  -webkit-backdrop-filter:blur(14px) saturate(140%);
  padding:26px;box-shadow:var(--shadow);
  transition:transform .22s cubic-bezier(.4,0,.2,1),border-color .22s;
}
.tl-card:hover{transform:translateY(-4px);border-color:rgba(91,132,255,.35)}
.tl-item.left .tl-card{grid-column:1}
.tl-item.right .tl-card{grid-column:3}
.tl-dot{
  grid-column:2;justify-self:center;display:flex;align-items:center;justify-content:center;
}
.tl-dot span{
  width:14px;height:14px;border-radius:50%;
  background:var(--bg-900);border:2px solid var(--brand-400);
  box-shadow:0 0 0 4px rgba(47,91,255,.14),0 0 18px rgba(91,132,255,.6);
}
.tl-thumb{
  border-radius:var(--radius-img);overflow:hidden;border:1px solid var(--line);
  margin-bottom:18px;
}
.tl-thumb img{width:100%;height:160px;object-fit:cover;transition:transform .3s cubic-bezier(.4,0,.2,1)}
.tl-card:hover .tl-thumb img{transform:scale(1.03)}
.tl-stage{margin-bottom:12px}
.tl-card h3{font-size:20px;margin-bottom:10px}
.tl-card p{font-size:15px;color:var(--text-300);line-height:1.85}
.tl-meta{display:flex;flex-wrap:wrap;gap:8px;margin-top:16px}

/* ---------- checklist ---------- */
.check-grid{display:grid;grid-template-columns:repeat(2,minmax(0,1fr));gap:14px}
.check-item{
  display:flex;align-items:flex-start;gap:14px;
  padding:20px 22px;border-radius:16px;
  background:var(--surface);border:1px solid var(--line);
  transition:border-color .22s,transform .22s cubic-bezier(.4,0,.2,1);height:100%;
}
.check-item:hover{border-color:rgba(91,132,255,.3);transform:translateY(-3px)}
.check-item .ck-icon{
  flex:0 0 36px;width:36px;height:36px;border-radius:10px;
  display:flex;align-items:center;justify-content:center;
  background:rgba(47,91,255,.14);border:1px solid rgba(91,132,255,.28);
  color:var(--accent-300);font-size:14px;
}
.check-item h3{font-size:16px;margin-bottom:6px}
.check-item p{font-size:14px;color:var(--text-300);line-height:1.8}

/* ---------- steps ---------- */
.steps{
  display:grid;grid-template-columns:repeat(4,minmax(0,1fr));gap:0;
  border:1px solid var(--line);border-radius:var(--radius-card);
  background:var(--surface);overflow:hidden;
}
.step{
  position:relative;padding:30px 24px;border-right:1px solid var(--line);
}
.step:last-child{border-right:none}
.step .step-no{
  font-size:13px;font-weight:700;color:var(--accent-500);letter-spacing:.14em;margin-bottom:14px;
  display:block;
}
.step h3{font-size:17px;margin-bottom:10px}
.step p{font-size:14px;color:var(--text-300);line-height:1.8}
.step:hover{background:var(--surface-2)}

/* ---------- stats ---------- */
.stat-track{display:grid;grid-template-columns:repeat(4,minmax(0,1fr));gap:20px}
.stat-card{
  border-radius:var(--radius-card);border:1px solid var(--line);background:var(--surface);
  padding:26px 24px;box-shadow:var(--shadow);transition:transform .22s cubic-bezier(.4,0,.2,1),border-color .22s;
}
.stat-card:hover{transform:translateY(-4px);border-color:rgba(91,132,255,.35)}
.stat-num{
  font-size:38px;font-weight:700;color:var(--accent-500);line-height:1.1;
  font-variant-numeric:tabular-nums;letter-spacing:-.02em;
}
.stat-num small{font-size:15px;font-weight:600;color:var(--accent-300);margin-left:5px}
.stat-card h3{font-size:16px;margin:12px 0 8px}
.stat-card p{font-size:13px;color:var(--text-500);line-height:1.75}
.stat-src{display:block;margin-top:14px;font-size:12px;color:var(--text-500);padding-top:12px;border-top:1px solid var(--line)}

/* ---------- faq ---------- */
.faq-wrap{max-width:900px;margin:0 auto}
.accordion-item{
  background:transparent;border:none;border-bottom:1px solid var(--line);
}
.accordion-button{
  background:transparent;color:var(--text-100);font-family:var(--font-cn);
  font-size:17px;font-weight:600;padding:24px 52px 24px 0;line-height:1.6;
  box-shadow:none;border-radius:0;position:relative;
}
.accordion-button::after{display:none}
.accordion-button::before{
  content:"+";position:absolute;right:6px;top:50%;transform:translateY(-50%);
  width:28px;height:28px;border-radius:8px;display:flex;align-items:center;justify-content:center;
  font-size:18px;font-weight:400;color:var(--accent-300);
  border:1px solid var(--line);background:var(--surface);
  transition:transform .22s cubic-bezier(.4,0,.2,1),background .22s;
}
.accordion-button:not(.collapsed){color:var(--accent-300);background:transparent;box-shadow:none}
.accordion-button:not(.collapsed)::before{content:"−";background:rgba(31,208,190,.14);border-color:rgba(31,208,190,.35)}
.accordion-button:focus{box-shadow:none;outline:none}
.accordion-button:focus-visible{outline:2px solid var(--brand-600);outline-offset:-4px}
.accordion-body{
  padding:0 52px 26px 18px;font-size:15px;color:var(--text-300);line-height:1.9;
  border-left:3px solid transparent;
}
.accordion-item:has(.accordion-button:not(.collapsed)) .accordion-body{
  border-left-color:var(--accent-500);
  box-shadow:inset 3px 0 12px -6px rgba(31,208,190,.6);
}

/* ---------- cta + form ---------- */
.cta-panel{
  position:relative;border-radius:24px;border:1px solid var(--line);
  background:linear-gradient(135deg,rgba(47,91,255,.16),rgba(31,208,190,.08) 60%,transparent);
  backdrop-filter:blur(16px) saturate(140%);
  -webkit-backdrop-filter:blur(16px) saturate(140%);
  padding:56px;overflow:hidden;box-shadow:var(--shadow-hover);
}
.cta-panel::before{
  content:"";position:absolute;top:0;left:0;right:0;height:1px;
  background:linear-gradient(90deg,transparent,var(--brand-400),var(--accent-300),transparent);
}
.cta-grid{display:grid;grid-template-columns:1fr 1fr;gap:48px;align-items:start;position:relative;z-index:2}
.cta-grid h2{font-size:clamp(24px,3vw,32px);margin-bottom:16px;line-height:1.3}
.cta-grid > div > p{color:var(--text-300);font-size:15px;margin-bottom:22px}
.cta-points{display:flex;flex-direction:column;gap:12px}
.cta-points li{display:flex;gap:10px;font-size:14px;color:var(--text-300)}
.cta-points li i{color:var(--accent-500);margin-top:5px;font-size:12px}
.form-grid{display:grid;grid-template-columns:1fr 1fr;gap:16px}
.field{display:flex;flex-direction:column;gap:8px}
.field.full{grid-column:1 / -1}
.field label{font-size:13px;color:var(--text-300)}
.form-control{
  background:rgba(255,255,255,.05);border:1px solid var(--line);
  border-radius:var(--radius-btn);color:var(--text-100);
  font-family:var(--font-cn);font-size:15px;padding:12px 14px;width:100%;
  transition:border-color .2s,box-shadow .2s,background .2s;
}
.form-control::placeholder{color:var(--text-500)}
.form-control:focus{
  background:rgba(255,255,255,.07);border-color:var(--brand-600);
  box-shadow:0 0 0 3px rgba(47,91,255,.22);outline:none;color:var(--text-100);
}
textarea.form-control{min-height:104px;resize:vertical}
.form-hint{font-size:13px;color:var(--warn-400);margin-top:10px;display:none}
.form-hint.show{display:block}
.form-note{font-size:12px;color:var(--text-500);margin-top:12px}

/* ---------- footer ---------- */
.site-footer{
  margin-top:0;background:var(--bg-800);border-top:1px solid var(--line);
  padding:72px 0 0;
}
.footer-grid{display:grid;grid-template-columns:1.4fr 1fr 1fr 1fr;gap:40px;padding-bottom:52px}
.footer-brand{display:flex;align-items:center;gap:10px;font-size:17px;font-weight:700;color:var(--text-100);margin-bottom:16px}
.footer-about{font-size:14px;color:var(--text-500);line-height:1.9;max-width:340px}
.footer-col h4{font-size:14px;letter-spacing:.06em;color:var(--text-100);margin-bottom:18px}
.footer-col ul{display:flex;flex-direction:column;gap:11px}
.footer-col ul a{font-size:14px;color:var(--text-300)}
.footer-col ul a:hover{color:var(--accent-300)}
.footer-contact{font-size:14px;color:var(--text-500);line-height:1.95}
.footer-contact .qr{
  margin-top:16px;width:118px;height:118px;border-radius:14px;
  border:1px dashed var(--line);background:var(--surface);
  display:flex;align-items:center;justify-content:center;text-align:center;
  font-size:12px;color:var(--text-500);padding:10px;line-height:1.7;
}
.footer-bottom{
  border-top:1px solid var(--line);padding:22px 0;display:flex;flex-wrap:wrap;
  gap:12px;justify-content:space-between;font-size:13px;color:var(--text-500);
}

/* ---------- mobile drawer ---------- */
.drawer{
  position:fixed;inset:0;z-index:1200;background:rgba(5,8,15,.98);
  display:flex;flex-direction:column;padding:22px 20px 32px;
  transform:translateX(100%);transition:transform .3s cubic-bezier(.4,0,.2,1);
  overflow-y:auto;
}
.drawer.open{transform:translateX(0)}
.drawer-head{display:flex;align-items:center;justify-content:space-between;margin-bottom:26px}
.drawer-close{
  width:44px;height:44px;border-radius:var(--radius-btn);background:var(--surface);
  border:1px solid var(--line);color:var(--text-100);font-size:18px;cursor:pointer;
  display:flex;align-items:center;justify-content:center;
}
.drawer-nav{display:flex;flex-direction:column}
.drawer-nav a{
  height:56px;display:flex;align-items:center;justify-content:space-between;
  color:var(--text-300);font-size:16px;border-bottom:1px solid var(--line);
}
.drawer-nav a:hover,.drawer-nav a.active{color:var(--accent-300)}
.drawer-foot{margin-top:auto;padding-top:28px}
.drawer-foot .btn{width:100%}
body.drawer-open{overflow:hidden}

/* ---------- floating cta ---------- */
.float-cta{
  position:fixed;right:28px;bottom:28px;z-index:900;
  display:inline-flex;align-items:center;gap:10px;
  padding:14px 22px;border-radius:var(--radius-pill);
  background:linear-gradient(135deg,var(--brand-600),#3E6BFF);color:#fff;font-weight:600;font-size:14px;
  box-shadow:0 0 0 1px rgba(47,91,255,.5),0 14px 34px -12px rgba(47,91,255,.85);
  opacity:0;visibility:hidden;transform:translateY(12px);
  transition:opacity .26s cubic-bezier(.4,0,.2,1),transform .26s,visibility .26s;
}
.float-cta.show{opacity:1;visibility:visible;transform:translateY(0)}
.float-cta:hover{color:#fff;filter:brightness(1.08);transform:translateY(-2px)}

/* ---------- responsive ---------- */
@media (max-width:1200px){
  .header-inner{gap:16px}
  .nav-link{padding:8px 11px;font-size:14px}
}
@media (max-width:1024px){
  .nav-desktop{display:none}
  .nav-toggle{display:flex}
  .hero-grid{grid-template-columns:1fr;gap:40px}
  .hero-visual img{height:280px}
  .section{padding:84px 0}
  .page-hero{padding:136px 0 76px}
  .mosaic{grid-template-columns:1fr}
  .cta-panel{padding:42px}
  .cta-grid{grid-template-columns:1fr;gap:34px}
  .footer-grid{grid-template-columns:1fr 1fr;gap:32px}
  .steps{grid-template-columns:repeat(2,minmax(0,1fr))}
  .step:nth-child(2){border-right:none}
  .step:nth-child(1),.step:nth-child(2){border-bottom:1px solid var(--line)}
  .stat-track{grid-template-columns:repeat(2,minmax(0,1fr))}
}
@media (max-width:768px){
  .container{padding:0 18px}
  .section{padding:64px 0}
  .page-hero{padding:120px 0 60px}
  h1.hero-title{font-size:clamp(26px,7vw,34px)}
  .hero-lead{font-size:14px}
  .trust-bar{grid-template-columns:repeat(2,minmax(0,1fr));gap:18px}
  .hero-visual img{height:220px}
  .timeline::before{left:9px;transform:none}
  .tl-item{grid-template-columns:1fr;gap:16px;padding-left:34px;margin-bottom:30px}
  .tl-item.left .tl-card,.tl-item.right .tl-card{grid-column:1}
  .tl-dot{position:absolute;left:0;top:26px;grid-column:1;justify-self:start}
  .check-grid{grid-template-columns:1fr}
  .steps{grid-template-columns:1fr}
  .step{border-right:none;border-bottom:1px solid var(--line)}
  .step:last-child{border-bottom:none}
  .stat-track{grid-template-columns:1fr}
  .cta-panel{padding:30px 22px;border-radius:20px}
  .form-grid{grid-template-columns:1fr}
  .footer-grid{grid-template-columns:1fr;gap:30px}
  .footer-bottom{flex-direction:column;gap:8px}
  .float-cta{
    right:0;left:0;bottom:0;border-radius:0;justify-content:center;
    padding:16px 20px calc(16px + env(safe-area-inset-bottom));
    transform:translateY(0);
  }
  body{padding-bottom:56px}
}
@media (max-width:520px){
  .hero-actions{gap:10px}
  .hero-actions .btn{width:100%}
  .card-body{padding:24px 20px}
  .accordion-button{font-size:15px;padding:20px 44px 20px 0}
  .accordion-body{padding:0 30px 22px 14px;font-size:14px}
}

/* roulang page: category3 */
:root{
  --bg-900:#05080F;
  --bg-800:#0A101C;
  --bg-700:#070C17;
  --brand-600:#2F5BFF;
  --brand-400:#5B84FF;
  --accent-500:#1FD0BE;
  --accent-300:#7BF0E3;
  --warn-400:#F2A93B;
  --text-100:#EAF0FA;
  --text-300:#A9B7CC;
  --text-500:#6E7E96;
  --line:rgba(255,255,255,.09);
  --surface:rgba(255,255,255,.045);
  --surface-2:rgba(255,255,255,.07);
  --radius-card:20px;
  --radius-btn:12px;
  --radius-img:16px;
  --shadow-1:0 12px 30px -18px rgba(0,0,0,.9);
  --shadow-2:0 20px 44px -20px rgba(0,0,0,.95);
  --ease:cubic-bezier(.4,0,.2,1);
  --bs-primary:#2F5BFF;
  --bs-primary-rgb:47,91,255;
  --bs-body-bg:#05080F;
  --bs-body-color:#EAF0FA;
  --bs-link-color:#5B84FF;
  --bs-link-hover-color:#7BF0E3;
  --bs-border-color:rgba(255,255,255,.09);
}

*,*::before,*::after{box-sizing:border-box}
html{scroll-behavior:smooth;-webkit-text-size-adjust:100%}
body{
  margin:0;
  padding-top:72px;
  background:var(--bg-900);
  color:var(--text-100);
  font-family:"PingFang SC","HarmonyOS Sans SC","Microsoft YaHei",system-ui,-apple-system,"Segoe UI",sans-serif;
  font-size:16px;
  line-height:1.85;
  font-variant-numeric:tabular-nums;
  -webkit-font-smoothing:antialiased;
  overflow-x:hidden;
}
img{max-width:100%;display:block}
a{color:var(--brand-400);text-decoration:none;transition:color .2s var(--ease)}
a:hover{color:var(--accent-300)}
h1,h2,h3,h4{margin:0;color:var(--text-100);font-weight:650;letter-spacing:.01em}
p{margin:0}
ul{margin:0;padding:0;list-style:none}
button{font-family:inherit}
:focus-visible{outline:2px solid var(--brand-400);outline-offset:3px;border-radius:6px}

.container{width:100%;max-width:1200px;margin:0 auto;padding:0 24px}
section{scroll-margin-top:88px}

/* ===== 顶部导航 ===== */
.site-header{
  position:fixed;top:0;left:0;right:0;z-index:1000;
  height:72px;display:flex;align-items:center;
  background:linear-gradient(180deg,rgba(5,8,15,.82),rgba(5,8,15,.32));
  transition:background .24s var(--ease),backdrop-filter .24s var(--ease),border-color .24s var(--ease);
  border-bottom:1px solid transparent;
}
.site-header.scrolled{
  background:rgba(7,12,23,.74);
  backdrop-filter:blur(12px) saturate(140%);
  -webkit-backdrop-filter:blur(12px) saturate(140%);
  border-bottom:1px solid var(--line);
}
.header-inner{display:flex;align-items:center;justify-content:space-between;gap:24px;width:100%}
.brand{display:inline-flex;align-items:center;gap:10px;text-decoration:none;color:var(--text-100);font-weight:700;font-size:18px;letter-spacing:.02em;white-space:nowrap}
.brand:hover{color:var(--text-100)}
.brand-mark{
  position:relative;width:27px;height:27px;flex:0 0 27px;display:inline-block;
  border:1px solid rgba(91,132,255,.55);border-radius:8px;
  background:linear-gradient(140deg,rgba(47,91,255,.42),rgba(31,208,190,.18));
  box-shadow:0 0 18px -6px rgba(47,91,255,.9);
}
.brand-mark span{position:absolute;background:var(--accent-300);border-radius:1px}
.brand-mark span:first-child{left:6.5px;top:6px;width:3px;height:15px}
.brand-mark span:last-child{right:6.5px;top:6px;width:9px;height:3px;box-shadow:0 6px 0 -1px rgba(122,240,227,.55),0 12px 0 -2px rgba(122,240,227,.28)}
.brand-text{background:linear-gradient(90deg,#EAF0FA 20%,#9FC0FF 100%);-webkit-background-clip:text;background-clip:text;color:transparent}

.nav-desktop{display:flex;align-items:center;gap:4px}
.nav-link{
  position:relative;display:inline-block;padding:10px 14px;border-radius:10px;
  color:var(--text-300);font-size:15px;font-weight:500;text-decoration:none;
  transition:color .2s var(--ease),background .2s var(--ease);
}
.nav-link:hover{color:var(--text-100);background:var(--surface)}
.nav-link.active{color:var(--text-100);font-weight:600}
.nav-link.active::after{
  content:"";position:absolute;left:14px;right:14px;bottom:3px;height:2px;border-radius:2px;
  background:linear-gradient(90deg,var(--brand-600),var(--accent-500));
  box-shadow:0 0 12px -2px rgba(31,208,190,.9);
}
.header-actions{display:flex;align-items:center;gap:12px}

/* ===== 按钮 ===== */
.btn{
  display:inline-flex;align-items:center;justify-content:center;gap:8px;
  padding:13px 24px;border-radius:var(--radius-btn);
  font-size:15px;font-weight:600;line-height:1.2;text-decoration:none;
  border:1px solid transparent;cursor:pointer;
  transition:transform .2s var(--ease),background .2s var(--ease),border-color .2s var(--ease),box-shadow .2s var(--ease),filter .2s var(--ease);
}
.btn-primary{
  background:linear-gradient(135deg,var(--brand-600),#4A72FF);
  color:#fff;
  box-shadow:0 0 0 1px rgba(47,91,255,.5),0 10px 34px -12px rgba(47,91,255,.8);
}
.btn-primary:hover{color:#fff;filter:brightness(1.08);transform:translateY(-1px);box-shadow:0 0 0 1px rgba(47,91,255,.65),0 16px 38px -14px rgba(47,91,255,.95)}
.btn-line{background:var(--surface);border-color:var(--line);color:var(--text-100);backdrop-filter:blur(10px)}
.btn-line:hover{color:#fff;border-color:rgba(91,132,255,.5);background:var(--surface-2);transform:translateY(-1px)}
.btn-sm{padding:9px 16px;font-size:14px;border-radius:10px}
.btn-lg{padding:15px 30px;font-size:16px}

.nav-toggle{
  display:none;width:42px;height:42px;border-radius:11px;
  background:var(--surface);border:1px solid var(--line);color:var(--text-100);
  align-items:center;justify-content:center;font-size:17px;cursor:pointer;
  transition:background .2s var(--ease),border-color .2s var(--ease);
}
.nav-toggle:hover{background:var(--surface-2);border-color:rgba(91,132,255,.45)}

/* ===== 移动端抽屉 ===== */
.mobile-drawer{
  position:fixed;inset:0;z-index:1200;background:#05080F;
  transform:translateX(100%);transition:transform .3s var(--ease);
  padding:88px 22px 34px;display:flex;flex-direction:column;
  overflow-y:auto;
}
.mobile-drawer.open{transform:translateX(0)}
.drawer-close{
  position:absolute;top:16px;right:20px;width:42px;height:42px;border-radius:11px;
  background:var(--surface);border:1px solid var(--line);color:var(--text-100);font-size:18px;cursor:pointer;
}
.drawer-label{font-size:12px;color:var(--text-500);letter-spacing:.14em;margin-bottom:10px}
.drawer-link{
  display:flex;align-items:center;justify-content:space-between;
  height:56px;padding:0 16px;margin-bottom:6px;border-radius:12px;
  color:var(--text-300);font-size:16px;text-decoration:none;
  border:1px solid transparent;background:var(--surface);
}
.drawer-link:hover,.drawer-link.active{color:var(--text-100);border-color:rgba(91,132,255,.4);background:var(--surface-2)}
.drawer-foot{margin-top:auto;padding-top:22px;border-top:1px solid var(--line);color:var(--text-500);font-size:13px}

/* ===== 通用板块 ===== */
.section{padding:104px 0;position:relative}
.section-alt{background:var(--bg-700);border-top:1px solid var(--line);border-bottom:1px solid var(--line)}
.section-head{max-width:760px;margin-bottom:48px}
.eyebrow{
  display:inline-flex;align-items:center;gap:8px;
  font-size:12px;letter-spacing:.16em;color:var(--accent-300);
  padding:7px 14px;border-radius:999px;border:1px solid rgba(31,208,190,.28);
  background:rgba(31,208,190,.07);margin-bottom:18px;
}
h2.section-title{font-size:clamp(24px,3.4vw,34px);line-height:1.25;margin-bottom:16px}
.section-sub{color:var(--text-300);font-size:16px;line-height:1.85;max-width:720px}
.muted{color:var(--text-500)}

/* ===== 面包屑 ===== */
.crumb{display:flex;flex-wrap:wrap;align-items:center;gap:8px;font-size:12px;color:var(--text-500);margin-bottom:22px}
.crumb a{color:var(--text-500)}
.crumb a:hover{color:var(--accent-300)}
.crumb span.sep{opacity:.55}
.crumb .cur{color:var(--text-300)}

/* ===== 内页 Hero ===== */
.page-hero{position:relative;padding:132px 0 92px;overflow:hidden;border-bottom:1px solid var(--line)}
.page-hero::before{
  content:"";position:absolute;inset:0;
  background-image:url(/assets/images/backpic/back-2.webp);
  background-size:cover;background-position:center;opacity:.26;
}
.page-hero::after{
  content:"";position:absolute;inset:0;
  background:
    radial-gradient(620px 320px at 12% 18%,rgba(47,91,255,.38),transparent 70%),
    radial-gradient(520px 300px at 88% 76%,rgba(31,208,190,.18),transparent 70%),
    linear-gradient(180deg,rgba(5,8,15,.55),var(--bg-900));
}
.page-hero .container{position:relative;z-index:2}
.hero-grid{display:grid;grid-template-columns:minmax(0,1.15fr) minmax(0,.85fr);gap:48px;align-items:center}
h1.hero-title{font-size:clamp(30px,5vw,52px);line-height:1.15;font-weight:700;margin-bottom:18px}
.hero-lead{color:var(--text-300);font-size:17px;line-height:1.85;max-width:640px}
.hero-actions{display:flex;flex-wrap:wrap;gap:14px;margin-top:30px}
.hero-facts{display:flex;flex-wrap:wrap;gap:26px;margin-top:36px;padding-top:26px;border-top:1px solid var(--line)}
.hero-fact{min-width:120px}
.hero-fact b{display:block;font-size:26px;font-weight:700;color:var(--accent-300);line-height:1.2}
.hero-fact span{font-size:13px;color:var(--text-500)}
.hero-visual{
  position:relative;border-radius:var(--radius-img);overflow:hidden;
  border:1px solid var(--line);box-shadow:var(--shadow-2),0 0 0 1px rgba(47,91,255,.28),0 0 60px -22px rgba(47,91,255,.9);
  aspect-ratio:4/3;
}
.hero-visual img{width:100%;height:100%;object-fit:cover}
.hero-visual::after{
  content:"";position:absolute;inset:0;
  background:linear-gradient(180deg,rgba(5,8,15,.05),rgba(5,8,15,.6));
}

/* ===== 错位卡片网格 ===== */
.stagger-grid{
  display:grid;grid-template-columns:repeat(2,minmax(0,1fr));
  gap:30px;padding-bottom:36px;
}
.s-card{
  display:flex;flex-direction:column;position:relative;overflow:hidden;
  border-radius:var(--radius-card);border:1px solid var(--line);
  background:var(--surface);backdrop-filter:blur(14px) saturate(140%);
  -webkit-backdrop-filter:blur(14px) saturate(140%);
  box-shadow:var(--shadow-1);text-decoration:none;color:inherit;
  transition:transform .22s var(--ease),border-color .22s var(--ease),box-shadow .22s var(--ease),background .22s var(--ease);
}
.s-card::before{
  content:"";position:absolute;top:0;left:0;right:0;height:1px;z-index:3;
  background:linear-gradient(90deg,rgba(47,91,255,.95),rgba(31,208,190,.5),transparent);
}
.stagger-grid .s-card:nth-child(even){transform:translateY(32px)}
.s-card:hover{transform:translateY(-4px);border-color:rgba(91,132,255,.35);box-shadow:var(--shadow-2);color:inherit;background:var(--surface-2)}
.stagger-grid .s-card:nth-child(even):hover{transform:translateY(28px)}
.s-thumb{position:relative;aspect-ratio:16/9;overflow:hidden;background:#0b1220}
.s-thumb img{width:100%;height:100%;object-fit:cover;transition:transform .35s var(--ease)}
.s-card:hover .s-thumb img{transform:scale(1.03)}
.s-thumb .badge-float{
  position:absolute;left:14px;top:14px;z-index:2;
  font-size:12px;padding:5px 12px;border-radius:999px;
  background:rgba(5,8,15,.72);border:1px solid rgba(31,208,190,.35);
  color:var(--accent-300);backdrop-filter:blur(8px);
}
.s-body{padding:24px 24px 22px;display:flex;flex-direction:column;gap:12px;flex:1}
.s-body h3{font-size:20px;line-height:1.4}
.s-body p{color:var(--text-300);font-size:15px;line-height:1.8;display:-webkit-box;-webkit-line-clamp:2;-webkit-box-orient:vertical;overflow:hidden}
.tag-row{display:flex;flex-wrap:wrap;gap:8px;margin-top:auto;padding-top:8px}
.tag{
  font-size:12px;padding:4px 11px;border-radius:999px;
  color:var(--text-300);border:1px solid var(--line);background:rgba(255,255,255,.03);
}
.s-link{display:inline-flex;align-items:center;gap:7px;font-size:14px;font-weight:600;color:var(--brand-400);margin-top:4px}
.s-card:hover .s-link{color:var(--accent-300)}
.s-link i{font-size:12px;transition:transform .2s var(--ease)}
.s-card:hover .s-link i{transform:translateX(4px)}

/* ===== 流程 ===== */
.step-grid{display:grid;grid-template-columns:repeat(4,minmax(0,1fr));gap:22px;counter-reset:step}
.step{
  position:relative;padding:26px 22px 24px;border-radius:var(--radius-card);
  border:1px solid var(--line);background:var(--surface);
  transition:border-color .22s var(--ease),transform .22s var(--ease);
}
.step:hover{border-color:rgba(91,132,255,.35);transform:translateY(-4px)}
.step::before{
  counter-increment:step;content:"0" counter(step);
  display:block;font-size:13px;font-weight:700;letter-spacing:.1em;
  color:var(--accent-500);margin-bottom:14px;
}
.step h3{font-size:18px;margin-bottom:10px}
.step p{color:var(--text-300);font-size:14.5px;line-height:1.8}

/* ===== 核验区 ===== */
.check-wrap{display:grid;grid-template-columns:minmax(0,.9fr) minmax(0,1.1fr);gap:48px;align-items:start}
.check-list{display:flex;flex-direction:column;gap:14px}
.check-item{
  display:flex;gap:14px;padding:18px 20px;border-radius:16px;
  border:1px solid var(--line);background:var(--surface);
  transition:border-color .22s var(--ease),background .22s var(--ease);
}
.check-item:hover{border-color:rgba(31,208,190,.35);background:var(--surface-2)}
.check-item i{color:var(--accent-500);margin-top:4px;font-size:15px}
.check-item h3{font-size:16px;margin-bottom:6px}
.check-item p{color:var(--text-300);font-size:14.5px;line-height:1.75}

/* ===== 数据条 ===== */
.stat-grid{display:grid;grid-template-columns:repeat(4,minmax(0,1fr));gap:22px}
.stat{
  padding:26px 22px;border-radius:var(--radius-card);
  border:1px solid var(--line);background:var(--surface);position:relative;overflow:hidden;
}
.stat b{display:block;font-size:32px;font-weight:700;color:var(--accent-500);line-height:1.15;font-variant-numeric:tabular-nums}
.stat span{display:block;margin-top:8px;font-size:14px;color:var(--text-300)}
.stat em{display:block;margin-top:10px;font-size:12px;font-style:normal;color:var(--text-500)}

/* ===== CTA ===== */
.cta-band{
  position:relative;overflow:hidden;border-radius:26px;
  border:1px solid var(--line);padding:56px 48px;
  background:
    radial-gradient(560px 260px at 10% 0%,rgba(47,91,255,.35),transparent 70%),
    radial-gradient(420px 220px at 92% 100%,rgba(31,208,190,.2),transparent 70%),
    var(--surface);
  backdrop-filter:blur(14px) saturate(140%);
}
.cta-band h2{font-size:clamp(22px,3vw,30px);margin-bottom:14px}
.cta-band p{color:var(--text-300);max-width:640px}
.cta-actions{display:flex;flex-wrap:wrap;gap:14px;margin-top:28px}
.back-home{margin-top:22px;font-size:14px}
.back-home a{display:inline-flex;align-items:center;gap:8px;color:var(--text-300)}
.back-home a:hover{color:var(--accent-300)}

/* ===== 页脚 ===== */
.site-footer{
  margin-top:104px;padding:72px 0 30px;
  background:var(--bg-800);border-top:1px solid var(--line);
}
.footer-grid{display:grid;grid-template-columns:1.4fr 1fr 1fr 1.1fr;gap:40px}
.footer-brand{display:flex;align-items:center;gap:10px;font-size:18px;font-weight:700;color:var(--text-100);margin-bottom:16px}
.footer-about{color:var(--text-300);font-size:14.5px;line-height:1.85;max-width:340px}
.footer-col h4{font-size:15px;margin-bottom:18px;color:var(--text-100)}
.footer-col ul li{margin-bottom:11px}
.footer-col ul li a{color:var(--text-300);font-size:14.5px}
.footer-col ul li a:hover{color:var(--accent-300)}
.footer-contact{color:var(--text-300);font-size:14.5px;line-height:2}
.qr{
  margin-top:16px;width:132px;height:132px;border-radius:14px;
  border:1px dashed rgba(255,255,255,.18);background:var(--surface);
  display:flex;align-items:center;justify-content:center;text-align:center;
  font-size:12.5px;color:var(--text-500);line-height:1.7;padding:12px;
}
.footer-bottom{
  margin-top:56px;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-500);
}

/* ===== 响应式 ===== */
@media (max-width:1199px){
  .hero-grid{gap:36px}
  .check-wrap{gap:36px}
}
@media (max-width:991px){
  .nav-desktop{display:none}
  .nav-toggle{display:inline-flex}
  .section{padding:76px 0}
  .page-hero{padding:112px 0 72px}
  .hero-grid{grid-template-columns:1fr;gap:34px}
  .step-grid{grid-template-columns:repeat(2,minmax(0,1fr))}
  .stat-grid{grid-template-columns:repeat(2,minmax(0,1fr))}
  .check-wrap{grid-template-columns:1fr}
  .footer-grid{grid-template-columns:1fr 1fr;gap:34px}
}
@media (max-width:767px){
  body{padding-top:72px}
  .section{padding:60px 0}
  .container{padding:0 18px}
  .stagger-grid{grid-template-columns:1fr;gap:20px;padding-bottom:0}
  .stagger-grid .s-card:nth-child(even){transform:none}
  .stagger-grid .s-card:nth-child(even):hover{transform:translateY(-4px)}
  .cta-band{padding:36px 22px;border-radius:20px}
  .section-head{margin-bottom:32px}
  .footer-grid{grid-template-columns:1fr}
  .footer-bottom{flex-direction:column;gap:8px}
  h1.hero-title{font-size:clamp(26px,8vw,36px)}
}
@media (max-width:575px){
  .step-grid{grid-template-columns:1fr}
  .stat-grid{grid-template-columns:1fr}
  .hero-actions .btn{width:100%}
  .hero-facts{gap:18px}
  .hero-fact b{font-size:22px}
}

/* roulang page: category4 */
:root{
  --bg-900:#05080F;
  --bg-800:#0A101C;
  --bg-700:#070C17;
  --brand-600:#2F5BFF;
  --brand-400:#5B84FF;
  --accent-500:#1FD0BE;
  --accent-300:#7BF0E3;
  --warn-400:#F2A93B;
  --text-100:#EAF0FA;
  --text-300:#A9B7CC;
  --text-500:#6E7E96;
  --line:rgba(255,255,255,.09);
  --surface:rgba(255,255,255,.045);
  --surface-2:rgba(255,255,255,.07);
  --radius-card:20px;
  --radius-btn:12px;
  --radius-img:16px;
  --shadow-1:0 12px 30px -18px rgba(0,0,0,.9);
  --shadow-2:0 20px 44px -20px rgba(0,0,0,.95);
  --ease:cubic-bezier(.4,0,.2,1);
  --maxw:1200px;
}
*,*::before,*::after{box-sizing:border-box}
html{scroll-behavior:smooth;-webkit-text-size-adjust:100%}
body{
  margin:0;
  background:var(--bg-900);
  color:var(--text-100);
  font-family:"PingFang SC","HarmonyOS Sans SC","Microsoft YaHei",system-ui,-apple-system,"Segoe UI",sans-serif;
  font-size:16px;
  line-height:1.85;
  font-variant-numeric:tabular-nums;
  overflow-x:hidden;
  padding-bottom:0;
}
img{max-width:100%;display:block;height:auto}
a{color:var(--brand-400);text-decoration:none;transition:color .2s var(--ease),text-decoration-color .2s var(--ease)}
a:hover{color:var(--accent-300)}
button{font-family:inherit}
h1,h2,h3,h4{margin:0;font-weight:650;line-height:1.3;letter-spacing:.2px}
p{margin:0}
ul{margin:0;padding:0;list-style:none}
:focus-visible{outline:2px solid var(--brand-400);outline-offset:3px;border-radius:6px}
.container{
  width:100%;
  max-width:var(--maxw);
  margin:0 auto;
  padding-left:24px;
  padding-right:24px;
}
section[id]{scroll-margin-top:88px}

/* ===== 顶部导航 ===== */
.site-header{
  position:fixed;
  top:0;left:0;right:0;
  height:72px;
  z-index:1040;
  display:flex;
  align-items:center;
  background:linear-gradient(180deg,rgba(5,8,15,.92),rgba(5,8,15,.55));
  border-bottom:1px solid transparent;
  transition:background .24s var(--ease),border-color .24s var(--ease),backdrop-filter .24s var(--ease);
}
.site-header.scrolled{
  background:rgba(7,12,23,.72);
  backdrop-filter:blur(12px) saturate(140%);
  -webkit-backdrop-filter:blur(12px) saturate(140%);
  border-bottom-color:var(--line);
}
.header-inner{
  display:flex;
  align-items:center;
  justify-content:space-between;
  gap:20px;
  width:100%;
}
.brand{
  display:inline-flex;
  align-items:center;
  gap:10px;
  color:var(--text-100);
  font-weight:700;
  font-size:18px;
  letter-spacing:.4px;
  white-space:nowrap;
}
.brand:hover{color:var(--text-100)}
.brand-mark{
  width:28px;height:28px;
  display:inline-flex;
  align-items:center;
  justify-content:center;
  gap:4px;
  border:1px solid rgba(91,132,255,.55);
  border-radius:8px;
  background:linear-gradient(135deg,rgba(47,91,255,.35),rgba(31,208,190,.16));
  box-shadow:0 0 16px -6px rgba(47,91,255,.9);
  flex:0 0 auto;
}
.brand-mark span{
  display:block;
  width:3px;
  border-radius:2px;
  background:linear-gradient(180deg,var(--accent-300),var(--brand-400));
}
.brand-mark span:first-child{height:14px}
.brand-mark span:last-child{height:9px}
.brand-text{line-height:1}
.nav-desktop{
  display:flex;
  align-items:center;
  gap:6px;
  margin-left:auto;
}
.nav-link{
  position:relative;
  display:inline-block;
  padding:10px 12px;
  font-size:15px;
  color:var(--text-300);
  border-radius:10px;
  transition:color .2s var(--ease),background .2s var(--ease);
}
.nav-link::after{
  content:"";
  position:absolute;
  left:12px;right:12px;bottom:4px;
  height:2px;
  border-radius:2px;
  background:linear-gradient(90deg,var(--brand-600),var(--accent-500));
  transform:scaleX(0);
  transform-origin:left;
  transition:transform .22s var(--ease);
}
.nav-link:hover{color:var(--text-100);background:var(--surface)}
.nav-link:hover::after{transform:scaleX(1)}
.nav-link.active{color:var(--text-100)}
.nav-link.active::after{transform:scaleX(1)}
.header-actions{display:flex;align-items:center;gap:10px}
.btn{
  display:inline-flex;
  align-items:center;
  justify-content:center;
  gap:8px;
  padding:12px 22px;
  font-size:15px;
  font-weight:600;
  border-radius:var(--radius-btn);
  border:1px solid transparent;
  cursor:pointer;
  transition:transform .2s var(--ease),box-shadow .2s var(--ease),background .2s var(--ease),border-color .2s var(--ease),color .2s var(--ease),filter .2s var(--ease);
  text-align:center;
  line-height:1.2;
}
.btn-primary{
  color:#fff;
  background:linear-gradient(135deg,var(--brand-600),#3F6BFF 60%,rgba(31,208,190,.85));
  box-shadow:0 0 0 1px rgba(47,91,255,.5),0 10px 34px -12px rgba(47,91,255,.8);
}
.btn-primary:hover{
  color:#fff;
  transform:translateY(-1px);
  filter:brightness(1.08);
}
.btn-line{
  color:var(--text-100);
  background:var(--surface);
  border-color:var(--line);
  backdrop-filter:blur(10px);
  -webkit-backdrop-filter:blur(10px);
}
.btn-line:hover{
  color:var(--text-100);
  border-color:rgba(91,132,255,.45);
  background:var(--surface-2);
  transform:translateY(-1px);
}
.btn-sm{padding:9px 16px;font-size:14px}
.btn-lg{padding:15px 30px;font-size:16px}
.btn-block{width:100%}
.nav-toggle{
  display:none;
  width:42px;height:42px;
  align-items:center;
  justify-content:center;
  color:var(--text-100);
  background:var(--surface);
  border:1px solid var(--line);
  border-radius:12px;
  font-size:17px;
  cursor:pointer;
  transition:background .2s var(--ease),border-color .2s var(--ease);
}
.nav-toggle:hover{background:var(--surface-2);border-color:rgba(91,132,255,.45)}

/* ===== 移动抽屉 ===== */
.mobile-drawer{
  position:fixed;
  inset:0;
  z-index:1060;
  background:#060B15;
  padding:22px 20px calc(28px + env(safe-area-inset-bottom));
  display:flex;
  flex-direction:column;
  gap:18px;
  transform:translateX(100%);
  visibility:hidden;
  transition:transform .28s var(--ease),visibility .28s var(--ease);
}
.mobile-drawer.open{transform:translateX(0);visibility:visible}
.drawer-head{
  display:flex;
  align-items:center;
  justify-content:space-between;
  padding-bottom:16px;
  border-bottom:1px solid var(--line);
}
.drawer-head .brand-text{font-size:18px;font-weight:700}
.drawer-close{
  width:42px;height:42px;
  display:inline-flex;
  align-items:center;
  justify-content:center;
  background:var(--surface);
  border:1px solid var(--line);
  color:var(--text-100);
  border-radius:12px;
  font-size:18px;
  cursor:pointer;
}
.drawer-nav{display:flex;flex-direction:column}
.drawer-nav a{
  display:flex;
  align-items:center;
  justify-content:space-between;
  min-height:56px;
  padding:0 4px;
  color:var(--text-300);
  font-size:16px;
  border-bottom:1px solid var(--line);
}
.drawer-nav a:hover,.drawer-nav a.active{color:var(--text-100)}
.drawer-nav a i{font-size:13px;color:var(--text-500)}
.drawer-cta{margin-top:auto}

/* ===== 面包屑 ===== */
.crumb-bar{padding:104px 0 0}
.breadcrumb{
  display:flex;
  align-items:center;
  gap:8px;
  font-size:12px;
  color:var(--text-500);
  margin:0;
  padding:0;
  background:none;
}
.breadcrumb a{color:var(--text-500)}
.breadcrumb a:hover{color:var(--accent-300)}
.breadcrumb .sep{color:rgba(255,255,255,.2)}
.breadcrumb .cur{color:var(--text-300)}

/* ===== HERO ===== */
.page-hero{
  position:relative;
  padding:42px 0 76px;
  overflow:hidden;
}
.page-hero::before{
  content:"";
  position:absolute;
  inset:0;
  background-image:url('/assets/images/backpic/back-2.webp');
  background-size:cover;
  background-position:center;
  opacity:.20;
  filter:saturate(.85);
}
.page-hero::after{
  content:"";
  position:absolute;
  inset:0;
  background:
    radial-gradient(760px 420px at 82% 8%,rgba(47,91,255,.30),transparent 68%),
    radial-gradient(560px 340px at 6% 88%,rgba(31,208,190,.18),transparent 70%),
    linear-gradient(180deg,rgba(5,8,15,.55),var(--bg-900) 88%);
  pointer-events:none;
}
.hero-grid{
  position:relative;
  z-index:2;
  display:grid;
  grid-template-columns:1.05fr .95fr;
  gap:52px;
  align-items:center;
}
.eyebrow{
  display:inline-flex;
  align-items:center;
  gap:8px;
  padding:6px 14px;
  font-size:12px;
  letter-spacing:1px;
  color:var(--accent-300);
  background:rgba(31,208,190,.08);
  border:1px solid rgba(31,208,190,.28);
  border-radius:999px;
  margin-bottom:20px;
}
.page-hero h1{
  font-size:clamp(30px,5vw,52px);
  line-height:1.15;
  font-weight:700;
  margin-bottom:16px;
}
.page-hero h1 .hl{
  color:var(--accent-300);
  text-shadow:0 0 24px rgba(31,208,190,.35);
}
.hero-sub{
  font-size:17px;
  color:var(--text-300);
  max-width:560px;
  margin-bottom:26px;
}
.hero-actions{display:flex;flex-wrap:wrap;gap:12px;margin-bottom:30px}
.hero-tags{display:flex;flex-wrap:wrap;gap:10px}
.tag-chip{
  display:inline-flex;
  align-items:center;
  gap:7px;
  padding:7px 14px;
  font-size:13px;
  color:var(--text-300);
  background:var(--surface);
  border:1px solid var(--line);
  border-radius:999px;
}
.tag-chip i{color:var(--accent-500);font-size:12px}
.hero-visual{
  position:relative;
  border-radius:var(--radius-card);
  border:1px solid var(--line);
  background:var(--surface);
  padding:14px;
  box-shadow:var(--shadow-2);
}
.hero-visual::before{
  content:"";
  position:absolute;
  top:-1px;left:22px;right:22px;
  height:1px;
  background:linear-gradient(90deg,var(--brand-600),transparent);
}
.hero-visual img{
  width:100%;
  aspect-ratio:16/9;
  object-fit:cover;
  border-radius:var(--radius-img);
}
.hero-visual figcaption{
  margin-top:12px;
  font-size:12px;
  color:var(--text-500);
  display:flex;
  align-items:center;
  gap:8px;
}
.hero-visual figcaption i{color:var(--accent-500)}

/* ===== 通用板块 ===== */
.section{padding:96px 0}
.section-alt{background:var(--bg-700);border-top:1px solid var(--line);border-bottom:1px solid var(--line)}
.section-head{max-width:760px;margin-bottom:44px}
.section-head h2{
  font-size:clamp(24px,3.4vw,34px);
  line-height:1.25;
  margin-bottom:14px;
}
.section-head p{color:var(--text-300);font-size:16px}
.kicker{
  display:inline-block;
  font-size:12px;
  letter-spacing:2px;
  color:var(--brand-400);
  margin-bottom:12px;
  text-transform:uppercase;
}

/* ===== 自查步骤条 ===== */
.steps{
  display:grid;
  grid-template-columns:repeat(3,1fr);
  gap:22px;
}
.step-card{
  position:relative;
  padding:28px 26px;
  background:var(--surface);
  border:1px solid var(--line);
  border-radius:var(--radius-card);
  box-shadow:var(--shadow-1);
  transition:transform .22s var(--ease),border-color .22s var(--ease),box-shadow .22s var(--ease);
}
.step-card::before{
  content:"";
  position:absolute;
  top:-1px;left:24px;right:24px;
  height:1px;
  background:linear-gradient(90deg,var(--brand-600),transparent);
}
.step-card:hover{transform:translateY(-4px);border-color:rgba(91,132,255,.35);box-shadow:var(--shadow-2)}
.step-no{
  display:inline-flex;
  align-items:center;
  justify-content:center;
  width:38px;height:38px;
  border-radius:12px;
  font-size:15px;
  font-weight:700;
  color:var(--accent-300);
  background:rgba(31,208,190,.10);
  border:1px solid rgba(31,208,190,.28);
  margin-bottom:16px;
}
.step-card h3{font-size:19px;margin-bottom:10px}
.step-card p{color:var(--text-300);font-size:15px}

/* ===== 对比表 ===== */
.table-wrap{
  overflow-x:auto;
  border:1px solid var(--line);
  border-radius:var(--radius-card);
  background:var(--surface);
  box-shadow:var(--shadow-1);
  -webkit-overflow-scrolling:touch;
}
table.cmp{
  width:100%;
  min-width:860px;
  border-collapse:collapse;
  font-size:15px;
}
table.cmp thead th{
  text-align:left;
  padding:18px 20px;
  font-size:13px;
  letter-spacing:1px;
  color:var(--accent-300);
  background:rgba(47,91,255,.12);
  border-bottom:1px solid var(--line);
  white-space:nowrap;
}
table.cmp tbody td{
  padding:18px 20px;
  color:var(--text-300);
  border-bottom:1px solid var(--line);
  vertical-align:top;
}
table.cmp tbody tr:nth-child(odd){background:rgba(255,255,255,.022)}
table.cmp tbody tr:last-child td{border-bottom:none}
table.cmp tbody tr{transition:background .2s var(--ease)}
table.cmp tbody tr:hover{background:rgba(91,132,255,.09)}
table.cmp td strong{color:var(--text-100);font-weight:600}
.badge-soft{
  display:inline-block;
  padding:3px 10px;
  font-size:12px;
  border-radius:999px;
  color:var(--accent-300);
  background:rgba(31,208,190,.10);
  border:1px solid rgba(31,208,190,.26);
  white-space:nowrap;
}
.badge-warn{
  color:var(--warn-400);
  background:rgba(242,169,59,.10);
  border-color:rgba(242,169,59,.30);
}
.table-note{
  margin-top:16px;
  font-size:13px;
  color:var(--text-500);
  display:flex;
  gap:8px;
  align-items:flex-start;
}
.table-note i{color:var(--brand-400);margin-top:4px}

/* ===== FAQ 手风琴 ===== */
.faq-list{border-top:1px solid var(--line)}
.faq-item{border-bottom:1px solid var(--line)}
.faq-item .accordion-button{
  position:relative;
  width:100%;
  display:flex;
  align-items:center;
  justify-content:space-between;
  gap:18px;
  padding:24px 4px 24px 0;
  background:transparent;
  border:none;
  box-shadow:none;
  color:var(--text-100);
  font-size:18px;
  font-weight:600;
  text-align:left;
  cursor:pointer;
  transition:color .2s var(--ease);
}
.faq-item .accordion-button::after{display:none}
.faq-item .accordion-button:hover{color:var(--accent-300)}
.faq-item .accordion-button:not(.collapsed){color:var(--text-100)}
.faq-item .accordion-button:not(.collapsed)::before{
  content:"";
  position:absolute;
  left:-16px;
  top:22px;
  bottom:22px;
  width:3px;
  border-radius:3px;
  background:linear-gradient(180deg,var(--brand-400),var(--accent-500));
  box-shadow:0 0 14px rgba(47,91,255,.75);
}
.faq-icon{
  flex:0 0 auto;
  width:30px;height:30px;
  display:inline-flex;
  align-items:center;
  justify-content:center;
  border-radius:999px;
  border:1px solid var(--line);
  background:var(--surface);
  color:var(--brand-400);
  font-size:13px;
  transition:transform .24s var(--ease),color .24s var(--ease),border-color .24s var(--ease);
}
.faq-item .accordion-button:not(.collapsed) .faq-icon{
  transform:rotate(180deg);
  color:var(--accent-300);
  border-color:rgba(31,208,190,.45);
}
.faq-body{
  padding:0 4px 26px 0;
  color:var(--text-300);
  font-size:16px;
  max-width:900px;
}
.faq-body p+p{margin-top:12px}
.faq-body ul{margin:14px 0 0;display:grid;gap:9px}
.faq-body ul li{
  position:relative;
  padding-left:20px;
  font-size:15px;
}
.faq-body ul li::before{
  content:"";
  position:absolute;
  left:2px;top:11px;
  width:6px;height:6px;
  border-radius:2px;
  background:var(--accent-500);
}

/* ===== 相关入口卡片 ===== */
.entry-grid{
  display:grid;
  grid-template-columns:repeat(3,1fr);
  gap:24px;
}
.entry-card{
  display:flex;
  flex-direction:column;
  background:var(--surface);
  border:1px solid var(--line);
  border-radius:var(--radius-card);
  overflow:hidden;
  box-shadow:var(--shadow-1);
  transition:transform .22s var(--ease),border-color .22s var(--ease),box-shadow .22s var(--ease);
}
.entry-card:hover{transform:translateY(-4px);border-color:rgba(91,132,255,.35);box-shadow:var(--shadow-2)}
.entry-thumb{
  position:relative;
  overflow:hidden;
}
.entry-thumb img{
  width:100%;
  aspect-ratio:16/9;
  object-fit:cover;
  transition:transform .3s var(--ease);
}
.entry-card:hover .entry-thumb img{transform:scale(1.03)}
.entry-thumb::after{
  content:"";
  position:absolute;
  inset:0;
  background:linear-gradient(180deg,rgba(5,8,15,.05),rgba(5,8,15,.55));
}
.entry-body{padding:22px 22px 24px;display:flex;flex-direction:column;flex:1}
.entry-body h3{font-size:19px;margin-bottom:10px}
.entry-body p{color:var(--text-300);font-size:15px;margin-bottom:18px}
.entry-link{
  margin-top:auto;
  display:inline-flex;
  align-items:center;
  gap:8px;
  font-size:14px;
  font-weight:600;
  color:var(--brand-400);
}
.entry-link i{transition:transform .22s var(--ease)}
.entry-card:hover .entry-link{color:var(--accent-300)}
.entry-card:hover .entry-link i{transform:translateX(4px)}

/* ===== CTA ===== */
.cta-section{padding:0 0 96px}
.cta-panel{
  position:relative;
  overflow:hidden;
  border-radius:24px;
  border:1px solid rgba(91,132,255,.30);
  background:linear-gradient(135deg,rgba(47,91,255,.20),rgba(31,208,190,.10) 55%,rgba(255,255,255,.03));
  padding:56px 48px;
  box-shadow:var(--shadow-2);
}
.cta-panel::before{
  content:"";
  position:absolute;
  inset:0;
  background-image:
    repeating-linear-gradient(90deg,rgba(255,255,255,.05) 0 1px,transparent 1px 42px),
    repeating-linear-gradient(0deg,rgba(255,255,255,.05) 0 1px,transparent 1px 42px);
  opacity:.5;
  pointer-events:none;
}
.cta-inner{
  position:relative;
  z-index:2;
  display:flex;
  flex-wrap:wrap;
  align-items:center;
  justify-content:space-between;
  gap:28px;
}
.cta-inner h2{font-size:clamp(22px,3vw,30px);margin-bottom:10px}
.cta-inner p{color:var(--text-300);max-width:560px}
.cta-actions{display:flex;flex-wrap:wrap;gap:12px}

/* ===== 页脚 ===== */
.site-footer{
  background:var(--bg-800);
  border-top:1px solid var(--line);
  padding:72px 0 0;
}
.footer-grid{
  display:grid;
  grid-template-columns:1.5fr 1fr 1fr 1.2fr;
  gap:36px;
  padding-bottom:44px;
}
.footer-brand{
  display:flex;
  align-items:center;
  gap:10px;
  font-size:17px;
  font-weight:700;
  margin-bottom:16px;
}
.footer-about{color:var(--text-300);font-size:14px;max-width:340px}
.footer-col h4{
  font-size:15px;
  margin-bottom:16px;
  color:var(--text-100);
}
.footer-col ul{display:grid;gap:10px}
.footer-col ul a{
  font-size:14px;
  color:var(--text-300);
}
.footer-col ul a:hover{color:var(--accent-300)}
.footer-contact{font-size:14px;color:var(--text-300);line-height:1.9}
.qr{
  margin-top:16px;
  width:132px;
  height:96px;
  display:flex;
  align-items:center;
  justify-content:center;
  text-align:center;
  font-size:12px;
  color:var(--text-500);
  border:1px dashed rgba(255,255,255,.18);
  border-radius:12px;
  background:rgba(255,255,255,.03);
  line-height:1.6;
}
.footer-bottom{
  display:flex;
  flex-wrap:wrap;
  gap:10px 22px;
  justify-content:space-between;
  padding:20px 0 28px;
  border-top:1px solid var(--line);
  font-size:13px;
  color:var(--text-500);
}

/* ===== 响应式 ===== */
@media (max-width:1200px){
  .hero-grid{gap:40px}
}
@media (max-width:992px){
  .nav-desktop{display:none}
  .nav-toggle{display:inline-flex}
  .header-actions .btn-line{display:none}
  .section{padding:72px 0}
  .hero-grid{grid-template-columns:1fr;gap:36px}
  .page-hero{padding:32px 0 60px}
  .crumb-bar{padding-top:96px}
  .steps{grid-template-columns:1fr;gap:18px}
  .entry-grid{grid-template-columns:1fr 1fr}
  .footer-grid{grid-template-columns:1fr 1fr;gap:30px}
  .cta-panel{padding:44px 32px}
}
@media (max-width:768px){
  .container{padding-left:18px;padding-right:18px}
  .section{padding:56px 0}
  .section-head{margin-bottom:32px}
  .entry-grid{grid-template-columns:1fr}
  .page-hero h1{font-size:clamp(26px,7vw,34px)}
  .hero-sub{font-size:16px}
  .faq-item .accordion-button{font-size:16px;padding:20px 0}
  .faq-item .accordion-button:not(.collapsed)::before{left:-10px}
  .faq-body{padding-bottom:22px;font-size:15px}
  .cta-panel{padding:34px 22px;border-radius:20px}
  .footer-grid{grid-template-columns:1fr;gap:26px}
  .footer-bottom{flex-direction:column}
  .footer-about{max-width:none}
}
@media (max-width:520px){
  .hero-actions .btn{width:100%}
  .cta-actions .btn{width:100%}
  .step-card{padding:22px 20px}
  table.cmp{font-size:14px}
  table.cmp thead th,table.cmp tbody td{padding:14px 16px}
}