/* roulang page: index */
:root{
  --bg:#060A16;
  --bg-1:#0A1122;
  --bg-2:#050810;
  --glass:rgba(255,255,255,.045);
  --glass-strong:rgba(255,255,255,.075);
  --line:rgba(255,255,255,.08);
  --card-line:rgba(255,255,255,.10);
  --inner-light:rgba(255,255,255,.18);
  --primary:#2B6CFF;
  --primary-soft:rgba(43,108,255,.12);
  --primary-glow:rgba(43,108,255,.45);
  --green:#1FE0A8;
  --orange:#FF8A3D;
  --warn:#FFC24B;
  --danger:#FF5A76;
  --text:#EAF0FB;
  --text-2:#A6B4CE;
  --text-3:#6C7A97;
  --r-card:16px;
  --r-btn:12px;
  --r-img:12px;
  --r-input:10px;
  --shadow-1:0 8px 28px rgba(0,0,0,.35);
  --shadow-2:0 16px 44px rgba(0,0,0,.45);
  --shadow-btn:0 8px 28px rgba(43,108,255,.45);
  --ease:cubic-bezier(.22,.61,.36,1);
}
*,*::before,*::after{box-sizing:border-box;}
html{-webkit-text-size-adjust:100%;}
body{
  margin:0;
  background:var(--bg);
  color:var(--text);
  font-family:"Inter","Space Grotesk","Noto Sans SC",system-ui,-apple-system,"PingFang SC","Microsoft YaHei",sans-serif;
  font-size:16px;
  line-height:1.8;
  letter-spacing:.1px;
  overflow-x:hidden;
}
img{max-width:100%;display:block;border-style:none;}
a{color:inherit;text-decoration:none;transition:color .16s var(--ease);}
a:hover{color:var(--primary);}
button,input,select,textarea{font:inherit;color:inherit;}
button{cursor:pointer;border:0;background:none;}
h1,h2,h3,h4,p,ul,ol,figure{margin:0;}
ul,ol{padding:0;list-style:none;}
:focus-visible{outline:2px solid var(--green);outline-offset:2px;border-radius:4px;}
.container{width:100%;max-width:1200px;margin:0 auto;padding:0 24px;}
.mono{font-variant-numeric:tabular-nums;font-feature-settings:"tnum" 1;}

/* ---------- 顶部信息条 ---------- */
.topbar{background:var(--bg-2);border-bottom:1px solid var(--line);font-size:12px;color:var(--text-3);}
.topbar-inner{display:flex;align-items:center;gap:18px;height:36px;}
.topbar-domain{color:var(--text-2);letter-spacing:.4px;flex:0 0 auto;}
.topbar-domain:hover{color:var(--primary);}
.topbar-ticker{
  flex:1 1 auto;min-width:0;display:flex;align-items:center;gap:8px;
  white-space:nowrap;overflow:hidden;text-overflow:ellipsis;
}
.topbar-dot{width:6px;height:6px;border-radius:50%;background:var(--green);flex:0 0 auto;box-shadow:0 0 0 3px rgba(31,224,168,.15);}
.topbar-actions{display:flex;align-items:center;gap:8px;flex:0 0 auto;}
.topbar-link{padding:4px 12px;border-radius:999px;border:1px solid var(--line);color:var(--text-2);line-height:1.4;}
.topbar-link:hover{border-color:rgba(43,108,255,.5);color:var(--text);background:var(--primary-soft);}
.topbar-link.is-main{background:var(--primary);border-color:var(--primary);color:#fff;}
.topbar-link.is-main:hover{color:#fff;filter:brightness(1.08);}

/* ---------- 主导航 ---------- */
.site-header{position:sticky;top:0;z-index:80;background:rgba(6,10,22,.86);backdrop-filter:blur(18px);-webkit-backdrop-filter:blur(18px);border-bottom:1px solid transparent;transition:background .2s var(--ease),border-color .2s var(--ease);}
.site-header.is-scrolled{background:rgba(5,8,16,.95);border-bottom-color:var(--line);}
.navbar{display:flex;align-items:center;gap:24px;height:68px;}
.brand{display:flex;align-items:center;gap:10px;flex:0 0 auto;}
.brand-mark{
  width:34px;height:34px;flex:0 0 auto;border-radius:9px;
  background:linear-gradient(140deg,var(--primary),#1B3FA8);
  clip-path:polygon(0 0,calc(100% - 9px) 0,100% 9px,100% 100%,0 100%);
  display:flex;align-items:center;justify-content:center;
  font-weight:800;font-size:15px;color:#fff;letter-spacing:-.5px;
  box-shadow:0 6px 18px rgba(43,108,255,.35);
}
.brand-text{display:flex;flex-direction:column;line-height:1.15;min-height:28px;justify-content:center;}
.brand-name{font-size:16px;font-weight:700;color:var(--text);letter-spacing:.2px;}
.brand-sub{font-size:11px;color:var(--text-3);letter-spacing:1.4px;}
.nav-links{display:flex;align-items:center;gap:4px;margin-left:8px;flex:1 1 auto;min-width:0;}
.nav-link{
  position:relative;padding:8px 12px;border-radius:8px;
  font-size:14px;color:var(--text-2);white-space:nowrap;
  transition:color .16s var(--ease),background .16s var(--ease);
}
.nav-link::after{
  content:"";position:absolute;left:12px;right:12px;bottom:2px;height:2px;border-radius:2px;
  background:var(--primary);transform:scaleX(0);transform-origin:left;transition:transform .16s var(--ease);
}
.nav-link:hover{color:var(--text);background:rgba(255,255,255,.04);}
.nav-link:hover::after{transform:scaleX(1);}
.nav-link.is-active{color:var(--text);}
.nav-link.is-active::after{transform:scaleX(1);}
.nav-right{display:flex;align-items:center;gap:10px;flex:0 0 auto;}
.nav-search{
  display:flex;align-items:center;gap:8px;height:38px;padding:0 12px;
  border:1px solid var(--card-line);border-radius:999px;background:var(--glass);color:var(--text-3);font-size:13px;
  transition:border-color .16s var(--ease),color .16s var(--ease);
}
.nav-search:hover{border-color:rgba(43,108,255,.45);color:var(--text-2);}
.btn{
  display:inline-flex;align-items:center;justify-content:center;gap:8px;
  height:44px;padding:0 22px;border-radius:var(--r-btn);
  font-size:14px;font-weight:600;letter-spacing:.2px;
  transition:transform .18s var(--ease),box-shadow .18s var(--ease),background .18s var(--ease),border-color .18s var(--ease),filter .18s var(--ease);
}
.btn-primary{background:var(--primary);color:#fff;border:1px solid var(--primary);box-shadow:var(--shadow-btn);}
.btn-primary:hover{transform:translateY(-2px);box-shadow:0 14px 34px rgba(43,108,255,.55);filter:brightness(1.06);color:#fff;}
.btn-primary:active{transform:translateY(1px);box-shadow:0 4px 14px rgba(43,108,255,.4);}
.btn-ghost{background:transparent;color:var(--text);border:1px solid var(--card-line);}
.btn-ghost:hover{background:rgba(43,108,255,.08);border-color:rgba(43,108,255,.5);transform:translateY(-2px);color:var(--text);}
.btn-sm{height:36px;padding:0 16px;font-size:13px;border-radius:999px;}
.nav-cta{height:40px;padding:0 18px;border-radius:999px;font-size:14px;}
.nav-toggle{display:none;width:44px;height:44px;border-radius:10px;border:1px solid var(--card-line);background:var(--glass);align-items:center;justify-content:center;}
.nav-toggle span{display:block;width:18px;height:2px;background:var(--text);border-radius:2px;position:relative;}
.nav-toggle span::before,.nav-toggle span::after{content:"";position:absolute;left:0;width:18px;height:2px;background:var(--text);border-radius:2px;}
.nav-toggle span::before{top:-6px;}
.nav-toggle span::after{top:6px;}

/* 移动抽屉 */
.drawer-mask{position:fixed;inset:0;background:rgba(3,6,14,.72);opacity:0;visibility:hidden;transition:opacity .2s var(--ease),visibility .2s var(--ease);z-index:90;}
.drawer-mask.is-open{opacity:1;visibility:visible;}
.drawer{
  position:fixed;top:0;right:0;bottom:0;width:min(320px,86vw);z-index:95;
  background:#070C19;border-left:1px solid var(--line);
  transform:translateX(100%);transition:transform .24s var(--ease);
  padding:20px;overflow-y:auto;
}
.drawer.is-open{transform:translateX(0);}
.drawer-head{display:flex;align-items:center;justify-content:space-between;padding-bottom:16px;border-bottom:1px solid var(--line);margin-bottom:14px;}
.drawer-close{width:40px;height:40px;border-radius:10px;border:1px solid var(--card-line);color:var(--text-2);font-size:18px;line-height:1;}
.drawer-nav{display:flex;flex-direction:column;gap:4px;}
.drawer-nav a{padding:13px 14px;border-radius:10px;font-size:15px;color:var(--text-2);border:1px solid transparent;}
.drawer-nav a:hover,.drawer-nav a.is-active{background:var(--glass);border-color:var(--card-line);color:var(--text);}
.drawer-foot{margin-top:20px;padding-top:18px;border-top:1px solid var(--line);display:flex;flex-direction:column;gap:12px;}

/* ---------- 通用板块 ---------- */
main{display:block;}
.section{padding:96px 0;}
.section-alt{background:var(--bg-1);}
.section-head{display:flex;align-items:flex-end;justify-content:space-between;gap:24px;margin-bottom:40px;}
.section-title{display:flex;gap:14px;align-items:flex-start;}
.section-title .bar{width:3px;border-radius:3px;background:linear-gradient(180deg,var(--primary),var(--green));align-self:stretch;min-height:34px;flex:0 0 auto;}
.section-title .idx{font-size:13px;color:var(--green);letter-spacing:2px;font-weight:700;line-height:1.4;}
.section-title h2{font-size:30px;font-weight:650;line-height:1.35;letter-spacing:-.3px;margin-top:2px;}
.section-title p{color:var(--text-2);font-size:14px;margin-top:8px;max-width:640px;}
.text-link{display:inline-flex;align-items:center;gap:6px;color:var(--primary);font-size:14px;font-weight:600;}
.text-link .arrow{transition:transform .18s var(--ease);}
.text-link:hover{text-decoration:underline;}
.text-link:hover .arrow{transform:translateX(3px);}
.badge{
  display:inline-flex;align-items:center;height:24px;padding:0 10px;border-radius:6px;
  font-size:12px;font-weight:600;letter-spacing:.3px;
  background:var(--primary-soft);color:#8FB4FF;border:1px solid rgba(43,108,255,.28);
}
.badge-green{background:rgba(31,224,168,.12);color:var(--green);border-color:rgba(31,224,168,.28);}
.badge-orange{background:rgba(255,138,61,.12);color:var(--orange);border-color:rgba(255,138,61,.3);}
.grid-12{display:grid;grid-template-columns:repeat(12,1fr);gap:24px;}

/* ---------- Hero ---------- */
.hero{
  position:relative;overflow:hidden;
  padding:84px 0 88px;
  background:
    linear-gradient(180deg,rgba(6,10,22,.94),rgba(6,10,22,.98)),
    url('/assets/images/backpic/back-1.webp') center/cover no-repeat;
}
.hero::before{
  content:"";position:absolute;inset:0;pointer-events:none;opacity:.055;
  background-image:linear-gradient(115deg,rgba(255,255,255,.9) 1px,transparent 1px),linear-gradient(65deg,rgba(255,255,255,.9) 1px,transparent 1px);
  background-size:64px 64px;
}
.hero::after{
  content:"";position:absolute;left:50%;top:-180px;width:760px;height:520px;transform:translateX(-50%);
  background:radial-gradient(circle,rgba(43,108,255,.22),transparent 65%);pointer-events:none;
}
.hero-inner{position:relative;z-index:2;}
.hero-text{grid-column:span 7;}
.hero-kicker{
  display:inline-flex;align-items:center;gap:8px;height:30px;padding:0 12px;border-radius:999px;
  border:1px solid rgba(31,224,168,.3);background:rgba(31,224,168,.08);
  font-size:12px;color:var(--green);letter-spacing:.6px;margin-bottom:22px;
}
.hero h1{font-size:44px;font-weight:700;line-height:1.28;letter-spacing:-.5px;}
.hero h1 em{font-style:normal;color:var(--primary);}
.hero-sub{margin-top:18px;font-size:16px;color:var(--text-2);max-width:620px;line-height:1.9;}
.hero-actions{display:flex;flex-wrap:wrap;gap:14px;margin-top:30px;}
.hero-trust{display:flex;flex-wrap:wrap;gap:0;margin-top:34px;border-top:1px solid var(--line);padding-top:22px;}
.hero-trust li{display:flex;align-items:center;gap:9px;font-size:13px;color:var(--text-2);padding-right:22px;margin-right:22px;border-right:1px solid var(--line);}
.hero-trust li:last-child{border-right:0;margin-right:0;padding-right:0;}
.hero-trust .ic{width:16px;height:16px;flex:0 0 auto;color:var(--green);}

.hero-card{
  grid-column:span 5;
  background:var(--glass);border:1px solid var(--card-line);border-radius:var(--r-card);
  box-shadow:var(--shadow-1);backdrop-filter:blur(18px);-webkit-backdrop-filter:blur(18px);
  padding:18px;position:relative;overflow:hidden;
}
.hero-card::before{content:"";position:absolute;top:0;left:0;right:0;height:1px;background:linear-gradient(90deg,transparent,var(--inner-light),transparent);}
.hero-card-top{display:flex;align-items:center;justify-content:space-between;padding:2px 4px 14px;border-bottom:1px solid var(--line);}
.hero-card-top .label{font-size:12px;color:var(--text-3);letter-spacing:1px;}
.live-pill{display:inline-flex;align-items:center;gap:6px;font-size:12px;color:var(--green);}
.live-pill i{width:6px;height:6px;border-radius:50%;background:var(--green);animation:pulse 1.8s infinite;}
@keyframes pulse{0%,100%{opacity:1}50%{opacity:.3}}
.hero-figure{margin:16px 0;border-radius:var(--r-img);overflow:hidden;position:relative;}
.hero-figure img{width:100%;height:230px;object-fit:cover;}
.hero-figure .cap{
  position:absolute;left:12px;bottom:12px;font-size:12px;color:#fff;
  background:rgba(6,10,22,.7);border:1px solid var(--line);border-radius:8px;padding:5px 10px;backdrop-filter:blur(8px);
}
.hero-stats{display:grid;grid-template-columns:repeat(3,1fr);gap:10px;}
.hero-stats div{background:rgba(255,255,255,.03);border:1px solid var(--line);border-radius:12px;padding:12px 10px;text-align:center;}
.hero-stats strong{display:block;font-size:20px;font-weight:700;color:var(--green);letter-spacing:-.5px;}
.hero-stats span{font-size:12px;color:var(--text-3);}

/* ---------- 信任条 ---------- */
.trustbar{border-top:1px solid var(--line);border-bottom:1px solid var(--line);background:var(--bg-1);}
.trustbar ul{display:grid;grid-template-columns:repeat(5,1fr);}
.trustbar li{display:flex;align-items:center;justify-content:center;gap:10px;padding:22px 12px;font-size:13.5px;color:var(--text-2);border-right:1px solid var(--line);}
.trustbar li:last-child{border-right:0;}
.trustbar .ic{width:18px;height:18px;color:var(--primary);flex:0 0 auto;}

/* ---------- 三步上手 ---------- */
.steps{position:relative;display:grid;grid-template-columns:repeat(3,1fr);gap:24px;}
.step{position:relative;padding:8px 24px 8px 0;}
.step + .step{padding-left:24px;}
.step:not(:last-child)::after{
  content:"";position:absolute;right:-6px;top:56px;width:calc(100% - 70px);height:1px;
  border-top:1px dashed rgba(255,255,255,.16);
}
.step-num{
  font-size:52px;font-weight:800;line-height:1;letter-spacing:-2px;
  color:transparent;-webkit-text-stroke:1px rgba(31,224,168,.55);
}
.step-ic{width:38px;height:38px;border-radius:11px;background:var(--primary-soft);border:1px solid rgba(43,108,255,.28);display:flex;align-items:center;justify-content:center;margin:16px 0 14px;color:#8FB4FF;}
.step h3{font-size:20px;font-weight:600;margin-bottom:10px;}
.step p{font-size:14.5px;color:var(--text-2);margin-bottom:14px;}

/* ---------- 案例证明 ---------- */
.case-row{display:grid;grid-template-columns:repeat(12,1fr);gap:32px;align-items:center;}
.case-row + .case-row{margin-top:72px;}
.case-figure{grid-column:span 5;border-radius:var(--r-card);overflow:hidden;border:1px solid var(--card-line);box-shadow:var(--shadow-1);}
.case-figure img{width:100%;height:300px;object-fit:cover;transition:transform .26s var(--ease);}
.case-figure:hover img{transform:scale(1.03);}
.case-body{grid-column:span 7;}
.case-row.reverse .case-figure{order:2;grid-column:span 5;}
.case-row.reverse .case-body{order:1;grid-column:span 7;}
.case-body h3{font-size:24px;font-weight:600;line-height:1.45;margin:14px 0 12px;}
.case-body p{color:var(--text-2);font-size:15px;max-width:640px;}
.case-metrics{display:flex;flex-wrap:wrap;gap:14px;margin:22px 0 18px;}
.metric{background:var(--glass);border:1px solid var(--card-line);border-radius:12px;padding:12px 18px;min-width:150px;}
.metric strong{display:block;font-size:20px;font-weight:700;color:var(--text);letter-spacing:-.5px;}
.metric span{font-size:12px;color:var(--text-3);}

/* ---------- 最新信息 CMS ---------- */
.news-layout{display:grid;grid-template-columns:repeat(12,1fr);gap:24px;}
.news-main{grid-column:span 6;}
.news-side{grid-column:span 6;display:grid;grid-template-columns:1fr;gap:16px;}
.card{
  background:var(--glass);border:1px solid var(--card-line);border-radius:var(--r-card);
  box-shadow:var(--shadow-1);backdrop-filter:blur(18px);-webkit-backdrop-filter:blur(18px);
  position:relative;overflow:hidden;
  transition:transform .22s var(--ease),box-shadow .22s var(--ease),border-color .22s var(--ease);
}
.card::before{content:"";position:absolute;top:0;left:0;right:0;height:1px;background:linear-gradient(90deg,transparent,var(--inner-light),transparent);}
.card:hover{transform:translateY(-4px);box-shadow:var(--shadow-2);border-color:rgba(43,108,255,.3);}
.news-main .card-figure{position:relative;overflow:hidden;}
.news-main .card-figure img{width:100%;height:250px;object-fit:cover;transition:transform .26s var(--ease);}
.news-main .card:hover .card-figure img{transform:scale(1.03);}
.news-main .card-body{padding:22px 24px 24px;}
.news-main h3{font-size:22px;font-weight:600;line-height:1.5;margin:12px 0 10px;}
.news-main p{font-size:14.5px;color:var(--text-2);display:-webkit-box;-webkit-line-clamp:2;-webkit-box-orient:vertical;overflow:hidden;}
.card-meta{display:flex;align-items:center;gap:12px;margin-top:16px;font-size:12.5px;color:var(--text-3);}
.card-meta .dot{width:3px;height:3px;border-radius:50%;background:var(--text-3);}
.news-mini{display:flex;gap:16px;padding:14px;align-items:center;}
.news-mini .thumb{width:96px;height:72px;flex:0 0 auto;border-radius:10px;overflow:hidden;background:linear-gradient(140deg,rgba(43,108,255,.25),rgba(31,224,168,.12));}
.news-mini .thumb img{width:100%;height:100%;object-fit:cover;transition:transform .26s var(--ease);}
.news-mini:hover .thumb img{transform:scale(1.03);}
.news-mini h3{font-size:15px;font-weight:600;line-height:1.55;display:-webkit-box;-webkit-line-clamp:2;-webkit-box-orient:vertical;overflow:hidden;margin:6px 0 4px;}
.news-mini .card-meta{margin-top:2px;}
.empty-state{
  border:1px dashed rgba(255,255,255,.18);border-radius:var(--r-card);
  padding:54px 24px;text-align:center;background:rgba(255,255,255,.02);
}
.empty-state .ic{width:44px;height:44px;margin:0 auto 14px;color:var(--text-3);}
.empty-state p{color:var(--text-2);font-size:14.5px;margin-bottom:18px;}

/* ---------- FAQ ---------- */
.faq-layout{display:grid;grid-template-columns:repeat(12,1fr);gap:32px;}
.faq-aside{grid-column:span 4;}
.faq-aside h2{font-size:30px;font-weight:650;line-height:1.35;letter-spacing:-.3px;margin:14px 0 12px;}
.faq-aside p{color:var(--text-2);font-size:14.5px;margin-bottom:22px;}
.faq-list{grid-column:span 8;display:flex;flex-direction:column;gap:12px;}
.faq-item{
  background:var(--glass);border:1px solid var(--card-line);border-radius:14px;overflow:hidden;
  backdrop-filter:blur(18px);-webkit-backdrop-filter:blur(18px);transition:border-color .2s var(--ease);
}
.faq-item.is-open{border-color:rgba(43,108,255,.4);}
.faq-q{
  width:100%;display:flex;align-items:center;justify-content:space-between;gap:16px;
  padding:18px 22px;text-align:left;font-size:15.5px;font-weight:600;color:var(--text);
}
.faq-q .sign{position:relative;width:18px;height:18px;flex:0 0 auto;}
.faq-q .sign::before,.faq-q .sign::after{content:"";position:absolute;background:var(--primary);border-radius:2px;transition:transform .2s var(--ease);}
.faq-q .sign::before{left:0;top:8px;width:18px;height:2px;}
.faq-q .sign::after{left:8px;top:0;width:2px;height:18px;}
.faq-item.is-open .faq-q .sign::after{transform:scaleY(0);}
.faq-a{max-height:0;overflow:hidden;transition:max-height .26s var(--ease);border-left:3px solid transparent;}
.faq-item.is-open .faq-a{max-height:340px;border-left-color:var(--primary);}
.faq-a p{padding:0 22px 20px;color:var(--text-2);font-size:14.5px;}

/* ---------- CTA / 表单 ---------- */
.cta-section{padding:96px 0;}
.cta-card{
  position:relative;border-radius:20px;overflow:hidden;
  background:var(--glass);border:1px solid var(--card-line);
  box-shadow:var(--shadow-2);backdrop-filter:blur(18px);-webkit-backdrop-filter:blur(18px);
  display:grid;grid-template-columns:repeat(12,1fr);gap:24px;padding:44px;
}
.cta-card::before{content:"";position:absolute;inset:0;background:radial-gradient(600px 300px at 85% 0%,rgba(43,108,255,.22),transparent 70%);pointer-events:none;}
.cta-left{grid-column:span 6;position:relative;z-index:2;}
.cta-left h2{font-size:30px;font-weight:650;line-height:1.36;letter-spacing:-.3px;margin-bottom:14px;}
.cta-left p{color:var(--text-2);font-size:15px;margin-bottom:22px;}
.cta-points li{display:flex;align-items:flex-start;gap:10px;font-size:14.5px;color:var(--text-2);margin-bottom:12px;}
.cta-points .ic{width:18px;height:18px;color:var(--green);flex:0 0 auto;margin-top:4px;}
.cta-right{grid-column:span 6;position:relative;z-index:2;}
.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-2);}
.field input,.field select{
  height:46px;padding:0 14px;border-radius:var(--r-input);
  background:rgba(6,10,22,.6);border:1px solid var(--card-line);color:var(--text);
  transition:border-color .18s var(--ease),box-shadow .18s var(--ease);
}
.field select{appearance:none;background-image:linear-gradient(45deg,transparent 50%,var(--text-3) 50%),linear-gradient(135deg,var(--text-3) 50%,transparent 50%);background-position:calc(100% - 18px) 20px,calc(100% - 12px) 20px;background-size:6px 6px,6px 6px;background-repeat:no-repeat;}
.field input::placeholder{color:var(--text-3);}
.field input:focus,.field select:focus{outline:none;border-color:var(--primary);box-shadow:0 0 0 4px rgba(43,108,255,.12);}
.form-note{font-size:12.5px;color:var(--text-3);margin-top:14px;line-height:1.7;}
.form-feedback{font-size:13px;color:var(--green);margin-top:12px;min-height:18px;}

/* ---------- 分类直达标签条 ---------- */
.tagbar{display:flex;flex-wrap:wrap;gap:12px;align-items:center;padding:26px 0;}
.tagbar .tagbar-title{font-size:13px;color:var(--text-3);margin-right:6px;letter-spacing:.6px;}
.tag-pill{
  display:inline-flex;align-items:center;gap:8px;height:38px;padding:0 18px;border-radius:999px;
  border:1px solid var(--card-line);background:var(--glass);font-size:13.5px;color:var(--text-2);
  transition:transform .18s var(--ease),border-color .18s var(--ease),color .18s var(--ease),background .18s var(--ease);
}
.tag-pill:hover{transform:translateY(-2px);border-color:rgba(43,108,255,.45);color:var(--text);background:rgba(43,108,255,.08);}

/* ---------- 页脚 ---------- */
.site-footer{background:#04070F;border-top:1px solid var(--line);padding-top:64px;margin-top:0;}
.footer-grid{display:grid;grid-template-columns:1.4fr 1fr 1fr 1fr;gap:32px;padding-bottom:48px;}
.footer-brand .brand{margin-bottom:16px;}
.footer-brand p{font-size:13.5px;color:var(--text-3);line-height:1.85;max-width:320px;}
.footer-col h4{font-size:14px;font-weight:650;color:var(--text);margin-bottom:16px;letter-spacing:.4px;}
.footer-col ul{display:flex;flex-direction:column;gap:10px;}
.footer-col a{font-size:13.5px;color:var(--text-3);}
.footer-col a:hover{color:var(--primary);}
.footer-col .static{font-size:13.5px;color:var(--text-3);}
.footer-bottom{border-top:1px solid var(--line);padding:22px 0;display:flex;flex-wrap:wrap;gap:12px;align-items:center;justify-content:space-between;font-size:12.5px;color:var(--text-3);}
.footer-bottom a{color:var(--text-3);}
.footer-bottom a:hover{color:var(--primary);}
.footer-bottom .links{display:flex;flex-wrap:wrap;gap:16px;}

/* ---------- 响应式 ---------- */
@media (min-width:1440px){
  .container{max-width:1320px;}
}
@media (max-width:1199px){
  .hero h1{font-size:36px;}
  .section-title h2{font-size:26px;}
  .cta-card{padding:36px;}
}
@media (max-width:1023px){
  .nav-links{display:none;}
  .nav-search{display:none;}
  .nav-toggle{display:inline-flex;}
  .hero{padding:64px 0;}
  .hero-text,.hero-card{grid-column:span 12;}
  .hero-card{order:2;}
  .steps{grid-template-columns:repeat(2,1fr);gap:20px;}
  .step:not(:last-child)::after{display:none;}
  .step + .step{padding-left:0;}
  .case-figure,.case-body,.case-row.reverse .case-figure,.case-row.reverse .case-body{grid-column:span 12;order:0;}
  .case-row{gap:22px;}
  .case-row + .case-row{margin-top:56px;}
  .news-main,.news-side{grid-column:span 12;}
  .faq-aside,.faq-list{grid-column:span 12;}
  .cta-left,.cta-right{grid-column:span 12;}
  .trustbar ul{grid-template-columns:repeat(3,1fr);}
  .trustbar li{border-bottom:1px solid var(--line);}
  .footer-grid{grid-template-columns:1fr 1fr;gap:28px;}
}
@media (max-width:767px){
  .container{padding:0 16px;}
  .section{padding:64px 0;}
  .cta-section{padding:64px 0;}
  .hero{padding:52px 0 56px;}
  .hero h1{font-size:26px;letter-spacing:-.2px;}
  .hero-sub{font-size:15px;}
  .hero-actions{gap:12px;}
  .hero-actions .btn{width:100%;}
  .hero-trust{flex-direction:column;gap:12px;padding-top:18px;}
  .hero-trust li{border-right:0;margin-right:0;padding-right:0;}
  .hero-figure img{height:190px;}
  .section-title h2{font-size:22px;}
  .section-head{flex-direction:column;align-items:flex-start;gap:14px;margin-bottom:28px;}
  .trustbar ul{grid-template-columns:1fr 1fr;}
  .trustbar li{justify-content:flex-start;padding:16px 8px;}
  .steps{grid-template-columns:1fr;gap:0;}
  .step{padding:0 0 28px;}
  .step-num{font-size:42px;}
  .case-figure img{height:220px;}
  .case-body h3{font-size:20px;}
  .case-metrics{gap:10px;}
  .metric{flex:1 1 140px;min-width:0;}
  .news-main .card-figure img{height:190px;}
  .news-mini .thumb{width:84px;height:64px;}
  .cta-card{padding:24px;border-radius:16px;}
  .cta-left h2{font-size:22px;}
  .form-grid{grid-template-columns:1fr;}
  .cta-right .btn{width:100%;}
  .footer-grid{grid-template-columns:1fr;gap:26px;padding-bottom:34px;}
  .footer-bottom{flex-direction:column;align-items:flex-start;}
  .tagbar{padding:18px 0;}
  .tag-pill{height:44px;}
}
@media (max-width:520px){
  .trustbar ul{grid-template-columns:1fr;}
  .hero-stats{grid-template-columns:1fr;}
  .hero-stats div{text-align:left;display:flex;align-items:baseline;gap:10px;}
  .hero-stats strong{font-size:18px;}
}
@media (prefers-reduced-motion:reduce){
  *{animation-duration:.001ms !important;transition-duration:.001ms !important;}
}

/* roulang page: article */
:root{
  --bg:#060A16;
  --bg-1:#0A1122;
  --bg-2:#050810;
  --panel:rgba(255,255,255,.045);
  --panel-2:rgba(255,255,255,.06);
  --line:rgba(255,255,255,.10);
  --line-soft:rgba(255,255,255,.08);
  --hl:rgba(255,255,255,.18);
  --primary:#2B6CFF;
  --primary-soft:rgba(43,108,255,.12);
  --primary-glow:rgba(43,108,255,.45);
  --accent:#1FE0A8;
  --warn:#FF8A3D;
  --warn-soft:rgba(255,138,61,.12);
  --state-warn:#FFC24B;
  --state-err:#FF5A76;
  --text:#EAF0FB;
  --text-2:#A6B4CE;
  --text-3:#6C7A97;
  --r-card:16px;
  --r-btn:12px;
  --r-img:12px;
  --r-input:10px;
  --shadow-1:0 8px 28px rgba(0,0,0,.35);
  --shadow-2:0 16px 44px rgba(0,0,0,.45);
  --shadow-btn:0 8px 28px rgba(43,108,255,.45);
  --sec:96px;
  --container:1200px;
  --font-cn:-apple-system,BlinkMacSystemFont,"PingFang SC","Hiragino Sans GB","Microsoft YaHei","Noto Sans SC",sans-serif;
  --font-num:"Inter","Space Grotesk","SFMono-Regular",UI-Monospace,monospace;
}
*,*::before,*::after{box-sizing:border-box;}
html{-webkit-text-size-adjust:100%;scroll-behavior:smooth;}
body{
  margin:0;
  background:var(--bg);
  color:var(--text);
  font-family:var(--font-cn);
  font-size:16px;
  line-height:1.8;
  -webkit-font-smoothing:antialiased;
  overflow-x:hidden;
}
h1,h2,h3,h4,h5{margin:0;line-height:1.35;font-weight:650;color:var(--text);}
h1{font-size:44px;font-weight:700;letter-spacing:-.5px;}
h2{font-size:30px;}
h3{font-size:20px;font-weight:600;}
p{margin:0 0 .9em;}
a{color:inherit;text-decoration:none;transition:color .18s ease,border-color .18s ease,background-color .18s ease;}
img{max-width:100%;display:block;border-radius:var(--r-img);}
ul,ol{margin:0;padding:0;list-style:none;}
button,input,select,textarea{font:inherit;color:inherit;}
button{cursor:pointer;border:0;background:none;}
:focus-visible{outline:2px solid var(--accent);outline-offset:2px;}
.container{
  width:100%;
  max-width:var(--container);
  margin:0 auto;
  padding:0 24px;
}
@media (min-width:1440px){
  :root{--container:1320px;}
}
/* ============ 顶部信息条 ============ */
.topbar{
  height:36px;
  background:var(--bg-2);
  border-bottom:1px solid var(--line-soft);
  font-size:12px;
  color:var(--text-3);
}
.topbar .container{
  height:100%;
  display:flex;
  align-items:center;
  gap:18px;
}
.topbar-domain{color:var(--text-2);letter-spacing:.4px;}
.topbar-domain:hover{color:var(--primary);}
.topbar-note{
  flex:1;
  min-width:0;
  overflow:hidden;
  white-space:nowrap;
  text-overflow:ellipsis;
  color:var(--text-3);
}
.topbar-note b{color:var(--accent);font-weight:600;}
.topbar-actions{display:flex;align-items:center;gap:10px;}
.topbar-link{color:var(--text-2);}
.topbar-link:hover{color:var(--text);}
.chip-mini{
  display:inline-flex;
  align-items:center;
  height:22px;
  padding:0 10px;
  border-radius:999px;
  background:var(--primary-soft);
  color:var(--primary);
  border:1px solid rgba(43,108,255,.28);
  font-size:12px;
  transition:background-color .18s ease,color .18s ease;
}
.chip-mini:hover{background:rgba(43,108,255,.22);color:#BBD1FF;}
/* ============ 主导航 ============ */
.site-header{
  position:sticky;
  top:0;
  z-index:60;
  background:rgba(6,10,22,.82);
  backdrop-filter:blur(18px);
  -webkit-backdrop-filter:blur(18px);
  border-bottom:1px solid transparent;
  transition:background-color .22s ease,border-color .22s ease,box-shadow .22s ease;
}
.site-header.is-scrolled{
  background:rgba(5,8,16,.94);
  border-bottom-color:var(--line);
  box-shadow:0 10px 30px rgba(0,0,0,.45);
}
.navbar{
  height:68px;
  display:flex;
  align-items:center;
  gap:20px;
}
.brand{display:flex;align-items:center;gap:12px;flex-shrink:0;}
.brand-mark{
  width:38px;height:38px;
  display:grid;place-items:center;
  font-family:var(--font-num);
  font-weight:700;
  font-size:19px;
  color:#fff;
  background:linear-gradient(135deg,var(--primary) 0%,#0F3FB0 100%);
  border-radius:10px 10px 10px 0;
  box-shadow:0 6px 20px rgba(43,108,255,.38);
  clip-path:polygon(0 0,100% 0,100% 100%,8px 100%);
}
.brand-text{display:flex;flex-direction:column;line-height:1.15;}
.brand-name{
  font-size:17px;
  font-weight:700;
  letter-spacing:-.2px;
  color:var(--text);
  min-height:22px;
  display:flex;
  align-items:center;
}
.brand-sub{
  font-family:var(--font-num);
  font-size:10px;
  letter-spacing:1.4px;
  color:var(--text-3);
  text-transform:uppercase;
}
.nav-links{
  display:flex;
  align-items:center;
  gap:4px;
  margin-left:8px;
  flex:1;
  min-width:0;
  overflow:hidden;
}
.nav-link{
  position:relative;
  padding:10px 12px;
  font-size:14.5px;
  color:var(--text-2);
  white-space:nowrap;
  border-radius:8px;
}
.nav-link::after{
  content:"";
  position:absolute;
  left:12px;right:12px;bottom:4px;
  height:2px;
  background:var(--primary);
  border-radius:2px;
  transform:scaleX(0);
  transform-origin:left;
  transition:transform .18s ease-out;
}
.nav-link:hover{color:var(--text);}
.nav-link:hover::after{transform:scaleX(1);}
.nav-link.is-active{color:var(--text);font-weight:600;}
.nav-link.is-active::after{transform:scaleX(1);}
.nav-right{display:flex;align-items:center;gap:12px;flex-shrink:0;}
.nav-search{
  display:inline-flex;
  align-items:center;
  gap:6px;
  height:36px;
  padding:0 14px;
  border:1px solid var(--line);
  border-radius:999px;
  font-size:13.5px;
  color:var(--text-2);
  background:var(--panel);
}
.nav-search:hover{color:var(--text);border-color:rgba(43,108,255,.4);}
.nav-toggle{
  display:none;
  width:44px;height:44px;
  border-radius:10px;
  border:1px solid var(--line);
  background:var(--panel);
  position:relative;
}
.nav-toggle span,
.nav-toggle span::before,
.nav-toggle span::after{
  position:absolute;
  left:50%;
  width:18px;height:2px;
  background:var(--text);
  border-radius:2px;
  transform:translateX(-50%);
  transition:transform .2s ease,opacity .2s ease;
}
.nav-toggle span{top:50%;margin-top:-1px;}
.nav-toggle span::before{content:"";top:-6px;left:0;transform:none;}
.nav-toggle span::after{content:"";top:6px;left:0;transform:none;}
/* ============ 按钮 ============ */
.btn{
  display:inline-flex;
  align-items:center;
  justify-content:center;
  gap:8px;
  height:44px;
  padding:0 22px;
  border-radius:var(--r-btn);
  font-size:15px;
  font-weight:600;
  border:1px solid transparent;
  transition:transform .18s ease-out,box-shadow .18s ease-out,background-color .18s ease,color .18s ease,border-color .18s ease;
}
.btn-primary{
  background:linear-gradient(180deg,#3C7BFF 0%,var(--primary) 100%);
  color:#fff;
  border-color:rgba(43,108,255,.85);
  box-shadow:var(--shadow-btn);
}
.btn-primary:hover{
  transform:translateY(-2px);
  box-shadow:0 12px 34px rgba(43,108,255,.55);
  filter:brightness(1.06);
}
.btn-primary:active{transform:translateY(-1px);box-shadow:0 6px 18px rgba(43,108,255,.35);}
.btn-ghost{
  background:transparent;
  color:var(--text);
  border-color:var(--line);
}
.btn-ghost:hover{background:rgba(43,108,255,.08);border-color:rgba(43,108,255,.45);transform:translateY(-2px);}
.btn-warm{
  background:transparent;
  color:#FFD5B8;
  border-color:rgba(255,138,61,.5);
}
.btn-warm:hover{background:var(--warn-soft);color:#FFE4D2;transform:translateY(-2px);}
.btn-sm{height:32px;padding:0 14px;font-size:13px;border-radius:999px;}
.btn:disabled,.btn[disabled]{opacity:.45;box-shadow:none;cursor:not-allowed;transform:none;}
.text-link{
  display:inline-flex;
  align-items:center;
  gap:6px;
  color:var(--primary);
  font-size:14.5px;
  font-weight:600;
}
.text-link .arrow{transition:transform .18s ease-out;}
.text-link:hover{text-decoration:underline;}
.text-link:hover .arrow{transform:translateX(3px);}
/* ============ 通用板块标题 ============ */
.section{padding:var(--sec) 0;}
.section-head{
  display:flex;
  align-items:flex-end;
  justify-content:space-between;
  gap:20px;
  margin-bottom:36px;
}
.sec-title{
  display:flex;
  align-items:center;
  gap:14px;
  font-size:30px;
  font-weight:650;
  letter-spacing:-.3px;
}
.sec-title::before{
  content:"";
  width:3px;
  height:30px;
  border-radius:3px;
  background:linear-gradient(180deg,var(--primary),var(--accent));
}
.sec-index{
  font-family:var(--font-num);
  font-size:13px;
  color:var(--accent);
  letter-spacing:1px;
  border:1px solid rgba(31,224,168,.35);
  border-radius:6px;
  padding:2px 8px;
}
.sec-desc{margin-top:12px;color:var(--text-2);font-size:15px;max-width:760px;}
/* ============ 面包屑 ============ */
.crumb-bar{
  border-bottom:1px solid var(--line-soft);
  background:linear-gradient(180deg,rgba(10,17,34,.85) 0%,rgba(6,10,22,0) 100%);
}
.crumb{
  display:flex;
  align-items:center;
  gap:10px;
  padding:18px 0 16px;
  font-size:13.5px;
  color:var(--text-3);
  flex-wrap:wrap;
}
.crumb a{color:var(--text-2);}
.crumb a:hover{color:var(--primary);}
.crumb .sep{color:#3A455E;}
.crumb .now{color:var(--text-2);max-width:520px;overflow:hidden;white-space:nowrap;text-overflow:ellipsis;}
/* ============ 文章头区 ============ */
.article-hero{
  position:relative;
  padding:52px 0 40px;
  background:
    linear-gradient(180deg,rgba(10,17,34,.9) 0%,rgba(6,10,22,1) 100%),
    url("/assets/images/backpic/back-2.webp") center/cover no-repeat;
  overflow:hidden;
}
.article-hero::before{
  content:"";
  position:absolute;
  inset:0;
  background-image:repeating-linear-gradient(115deg,rgba(255,255,255,.05) 0 1px,transparent 1px 46px);
  opacity:.5;
  pointer-events:none;
}
.article-hero .container{position:relative;z-index:1;}
.article-head{max-width:900px;}
.badge-row{display:flex;align-items:center;gap:10px;flex-wrap:wrap;margin-bottom:18px;}
.badge{
  display:inline-flex;
  align-items:center;
  height:24px;
  padding:0 10px;
  border-radius:6px;
  font-size:12.5px;
  font-weight:600;
  background:var(--primary-soft);
  color:#9DBBFF;
  border:1px solid rgba(43,108,255,.28);
}
.badge-accent{background:rgba(31,224,168,.12);color:var(--accent);border-color:rgba(31,224,168,.3);}
.badge-warm{background:var(--warn-soft);color:#FFB684;border-color:rgba(255,138,61,.32);}
.article-title{
  font-size:44px;
  font-weight:700;
  letter-spacing:-.5px;
  line-height:1.28;
  margin-bottom:20px;
}
.article-meta{
  display:flex;
  align-items:center;
  gap:22px;
  flex-wrap:wrap;
  font-size:13.5px;
  color:var(--text-3);
  padding-top:18px;
  border-top:1px solid var(--line-soft);
}
.article-meta .item{display:inline-flex;align-items:center;gap:7px;}
.article-meta .item b{color:var(--text-2);font-weight:600;}
.dot-sep{width:4px;height:4px;border-radius:50%;background:#3A455E;}
/* ============ 文章布局 ============ */
.article-wrap{padding:56px 0 var(--sec);}
.article-grid{
  display:grid;
  grid-template-columns:minmax(0,1fr) 268px;
  gap:56px;
  align-items:start;
}
.article-main{min-width:0;}
.article-surface{
  background:linear-gradient(180deg,rgba(10,17,34,.9) 0%,rgba(8,13,27,.75) 100%);
  border:1px solid var(--line);
  border-radius:var(--r-card);
  box-shadow:var(--shadow-1);
  padding:40px 44px 44px;
  position:relative;
  overflow:hidden;
}
.article-surface::before{
  content:"";
  position:absolute;
  top:0;left:0;right:0;
  height:1px;
  background:var(--hl);
}
.article-lead{
  font-size:16.5px;
  color:var(--text-2);
  border-left:3px solid var(--primary);
  background:var(--panel);
  border-radius:0 var(--r-input) var(--r-input) 0;
  padding:16px 20px;
  margin-bottom:32px;
}
/* ============ 正文 ============ */
.article-body{max-width:780px;font-size:16px;line-height:1.9;color:#DCE5F5;}
.article-body p{margin:0 0 18px;}
.article-body h2{
  position:relative;
  font-size:25px;
  font-weight:650;
  line-height:1.45;
  margin:40px 0 16px;
  padding-left:16px;
  color:var(--text);
}
.article-body h2::before{
  content:"";
  position:absolute;
  left:0;top:6px;bottom:6px;
  width:3px;
  border-radius:3px;
  background:linear-gradient(180deg,var(--primary),var(--accent));
}
.article-body h3{
  font-size:19px;
  margin:28px 0 12px;
  color:#F2F6FF;
}
.article-body ul,.article-body ol{margin:0 0 20px;padding-left:2px;}
.article-body ul li,.article-body ol li{
  position:relative;
  padding-left:22px;
  margin-bottom:10px;
  color:#DCE5F5;
}
.article-body ul li::before{
  content:"";
  position:absolute;
  left:2px;top:12px;
  width:7px;height:7px;
  border-radius:2px;
  background:var(--accent);
  box-shadow:0 0 10px rgba(31,224,168,.5);
}
.article-body ol{counter-reset:art;}
.article-body ol li{counter-increment:art;}
.article-body ol li::before{
  content:counter(art,decimal-leading-zero);
  position:absolute;
  left:0;top:2px;
  font-family:var(--font-num);
  font-size:12.5px;
  color:var(--accent);
  letter-spacing:.5px;
}
.article-body blockquote{
  margin:24px 0;
  padding:18px 22px;
  border-left:3px solid var(--primary);
  background:var(--panel);
  border-radius:0 var(--r-input) var(--r-input) 0;
  color:var(--text-2);
  font-size:15.5px;
}
.article-body blockquote p:last-child{margin-bottom:0;}
.article-body img{border-radius:var(--r-img);margin:22px 0 10px;width:100%;height:auto;}
.article-body figure{margin:24px 0;}
.article-body figcaption{
  text-align:center;
  font-size:13px;
  color:var(--text-3);
  margin-top:8px;
}
.article-body a{color:#8FB3FF;border-bottom:1px solid rgba(143,179,255,.35);}
.article-body a:hover{color:var(--primary);border-bottom-color:var(--primary);}
.article-body table{
  display:block;
  width:100%;
  overflow-x:auto;
  border-collapse:collapse;
  margin:24px 0;
  border:1px solid var(--line);
  border-radius:var(--r-input);
  font-size:14.5px;
}
.article-body thead th{
  background:rgba(43,108,255,.14);
  color:var(--text);
  font-weight:600;
  text-align:left;
  padding:12px 16px;
  white-space:nowrap;
}
.article-body tbody td{
  padding:12px 16px;
  border-top:1px solid var(--line-soft);
  color:var(--text-2);
}
.article-body tbody tr:nth-child(even){background:rgba(255,255,255,.025);}
.article-body strong{color:#fff;font-weight:600;}
.article-body code{
  font-family:var(--font-num);
  font-size:14px;
  background:rgba(255,255,255,.07);
  padding:2px 6px;
  border-radius:6px;
  color:#BBD1FF;
}
/* ============ 空态 ============ */
.empty-state{
  border:1px dashed rgba(255,255,255,.18);
  border-radius:var(--r-card);
  padding:56px 28px;
  text-align:center;
  background:var(--panel);
}
.empty-state svg{color:var(--text-3);margin:0 auto 16px;}
.empty-state h3{margin-bottom:8px;}
.empty-state p{color:var(--text-2);margin-bottom:22px;}
/* ============ 目录 ============ */
.article-aside{position:sticky;top:96px;}
.toc-card{
  background:var(--panel);
  border:1px solid var(--line);
  border-radius:var(--r-card);
  padding:22px 20px;
  box-shadow:var(--shadow-1);
  position:relative;
  overflow:hidden;
}
.toc-card::before{
  content:"";
  position:absolute;top:0;left:0;right:0;height:1px;background:var(--hl);
}
.toc-card h4{
  font-size:13px;
  letter-spacing:1px;
  color:var(--text-3);
  font-weight:600;
  margin-bottom:14px;
  font-family:var(--font-num);
}
.toc-card ul{display:flex;flex-direction:column;gap:4px;}
.toc-card a{
  display:block;
  font-size:14px;
  color:var(--text-2);
  padding:7px 10px;
  border-radius:8px;
  border-left:2px solid transparent;
  line-height:1.5;
}
.toc-card a:hover{background:rgba(43,108,255,.08);color:var(--text);}
.toc-card a.is-current{
  color:var(--text);
  border-left-color:var(--primary);
  background:rgba(43,108,255,.12);
}
.toc-help{margin-top:18px;padding-top:16px;border-top:1px solid var(--line-soft);font-size:13px;color:var(--text-3);}
.toc-help .text-link{font-size:13.5px;margin-top:10px;}
/* ============ 标签 ============ */
.tag-row{
  display:flex;
  align-items:center;
  gap:10px;
  flex-wrap:wrap;
  margin-top:36px;
  padding-top:24px;
  border-top:1px solid var(--line-soft);
}
.tag-row .label{font-size:13px;color:var(--text-3);}
.tag{
  display:inline-flex;
  align-items:center;
  height:26px;
  padding:0 12px;
  border-radius:999px;
  font-size:13px;
  color:var(--text-2);
  background:rgba(255,255,255,.05);
  border:1px solid var(--line);
}
.tag:hover{color:var(--text);border-color:rgba(43,108,255,.42);background:rgba(43,108,255,.1);}
/* ============ 相关推荐 ============ */
.related{padding:0 0 var(--sec);}
.related-grid{
  display:grid;
  grid-template-columns:repeat(3,minmax(0,1fr));
  gap:24px;
}
.rel-card{
  display:flex;
  gap:16px;
  padding:18px;
  background:var(--panel);
  border:1px solid var(--line);
  border-radius:var(--r-card);
  box-shadow:var(--shadow-1);
  position:relative;
  overflow:hidden;
  transition:transform .2s ease-out,box-shadow .2s ease-out,border-color .2s ease-out;
  clip-path:polygon(0 0,100% 0,100% calc(100% - 8px),calc(100% - 8px) 100%,0 100%);
}
.rel-card::before{
  content:"";
  position:absolute;top:0;left:0;right:0;height:1px;background:var(--hl);
}
.rel-card:hover{
  transform:translateY(-4px);
  border-color:rgba(43,108,255,.3);
  box-shadow:var(--shadow-2);
}
.rel-thumb{
  width:96px;height:72px;
  flex-shrink:0;
  overflow:hidden;
  border-radius:10px;
  background:linear-gradient(140deg,#101A31,#0A1122);
}
.rel-thumb img{width:100%;height:100%;object-fit:cover;transition:transform .25s ease-out;}
.rel-card:hover .rel-thumb img{transform:scale(1.03);}
.rel-body{min-width:0;display:flex;flex-direction:column;gap:6px;}
.rel-body h3{font-size:15.5px;line-height:1.5;font-weight:600;}
.rel-card:hover .rel-body h3{color:#C9DAFF;}
.rel-foot{display:flex;align-items:center;gap:10px;font-size:12.5px;color:var(--text-3);margin-top:auto;}
/* ============ 返回入口 ============ */
.back-actions{
  display:flex;
  gap:16px;
  flex-wrap:wrap;
  margin-top:34px;
}
/* ============ CTA 条 ============ */
.cta-band{padding:0 0 var(--sec);}
.cta-card{
  position:relative;
  overflow:hidden;
  border-radius:20px;
  border:1px solid var(--line);
  background:
    radial-gradient(900px 320px at 8% -20%,rgba(43,108,255,.22) 0%,rgba(43,108,255,0) 70%),
    linear-gradient(180deg,rgba(12,20,40,.95) 0%,rgba(8,13,27,.92) 100%);
  padding:42px 44px;
  display:flex;
  align-items:center;
  justify-content:space-between;
  gap:32px;
  box-shadow:var(--shadow-1);
}
.cta-card::before{
  content:"";
  position:absolute;top:0;left:0;right:0;height:1px;background:var(--hl);
}
.cta-copy{max-width:640px;}
.cta-copy h2{font-size:26px;margin-bottom:12px;}
.cta-copy p{color:var(--text-2);margin:0;}
.cta-points{display:flex;gap:20px;flex-wrap:wrap;margin-top:18px;font-size:13.5px;color:var(--text-2);}
.cta-points span{display:inline-flex;align-items:center;gap:7px;}
.cta-points svg{color:var(--accent);flex-shrink:0;}
.cta-actions{display:flex;gap:12px;flex-wrap:wrap;flex-shrink:0;}
/* ============ 页脚 ============ */
.site-footer{
  background:#04070F;
  border-top:1px solid var(--line);
  padding:64px 0 0;
}
.footer-grid{
  display:grid;
  grid-template-columns:1.6fr 1fr 1fr 1fr;
  gap:40px;
  padding-bottom:48px;
}
.footer-brand p{
  margin-top:18px;
  color:var(--text-3);
  font-size:13.5px;
  line-height:1.85;
  max-width:340px;
}
.footer-col h4{
  font-size:14px;
  color:var(--text);
  margin-bottom:16px;
  font-weight:600;
}
.footer-col ul{display:flex;flex-direction:column;gap:10px;}
.footer-col a,.footer-col .static{
  font-size:13.5px;
  color:var(--text-3);
}
.footer-col a:hover{color:var(--primary);}
.footer-bottom{
  border-top:1px solid var(--line-soft);
  padding:20px 0 28px;
  display:flex;
  align-items:center;
  justify-content:space-between;
  gap:18px;
  flex-wrap:wrap;
  font-size:12.5px;
  color:var(--text-3);
}
.footer-bottom .links{display:flex;gap:18px;flex-wrap:wrap;}
.footer-bottom .links a:hover{color:var(--primary);}
/* ============ 响应式 ============ */
@media (max-width:1199px){
  .article-grid{grid-template-columns:minmax(0,1fr) 240px;gap:36px;}
  .nav-links{gap:0;}
  .nav-link{padding:10px 9px;font-size:14px;}
}
@media (max-width:1023px){
  :root{--sec:64px;}
  h1{font-size:32px;}
  .article-title{font-size:32px;}
  .sec-title{font-size:26px;}
  .article-grid{grid-template-columns:minmax(0,1fr);}
  .article-aside{display:none;}
  .article-body{max-width:100%;}
  .footer-grid{grid-template-columns:1fr 1fr;gap:32px;}
  .related-grid{grid-template-columns:1fr;gap:16px;}
  .cta-card{flex-direction:column;align-items:flex-start;padding:34px 28px;}
}
@media (max-width:900px){
  .nav-links{
    position:fixed;
    top:0;
    right:0;
    width:min(320px,84vw);
    height:100vh;
    flex-direction:column;
    align-items:stretch;
    gap:6px;
    padding:96px 22px 32px;
    background:rgba(7,11,24,.98);
    backdrop-filter:blur(18px);
    border-left:1px solid var(--line);
    transform:translateX(102%);
    transition:transform .26s ease-out;
    z-index:80;
    overflow-y:auto;
  }
  .site-header.nav-open .nav-links{transform:translateX(0);}
  .site-header.nav-open::after{
    content:"";
    position:fixed;
    inset:0;
    background:rgba(3,5,12,.68);
    z-index:70;
  }
  .nav-link{padding:14px 12px;font-size:16px;border-radius:10px;}
  .nav-link::after{display:none;}
  .nav-link.is-active{background:rgba(43,108,255,.14);}
  .nav-toggle{display:inline-block;}
  .site-header.nav-open .nav-toggle span{background:transparent;}
  .site-header.nav-open .nav-toggle span::before{transform:rotate(45deg);top:0;}
  .site-header.nav-open .nav-toggle span::after{transform:rotate(-45deg);top:0;}
  .nav-search{display:none;}
  .nav-cta{display:none;}
}
@media (max-width:767px){
  :root{--sec:48px;}
  .container{padding:0 16px;}
  h1{font-size:26px;}
  h2{font-size:22px;}
  .article-title{font-size:26px;}
  .sec-title{font-size:22px;}
  .sec-title::before{height:22px;}
  .topbar-note{display:none;}
  .brand-name{font-size:15px;}
  .brand-sub{display:none;}
  .article-surface{padding:26px 20px 30px;}
  .article-body h2{font-size:21px;margin-top:32px;}
  .article-body h3{font-size:17px;}
  .article-meta{gap:12px;font-size:12.5px;}
  .btn{width:100%;}
  .cta-actions,.back-actions{width:100%;}
  .back-actions .btn{width:100%;}
  .rel-card{flex-direction:row;}
  .footer-grid{grid-template-columns:1fr;}
  .footer-bottom{flex-direction:column;align-items:flex-start;}
}
@media (prefers-reduced-motion:reduce){
  *{animation:none!important;transition:none!important;scroll-behavior:auto!important;}
}

/* roulang page: category1 */
:root{
  --bg:#060A16;
  --bg-2:#0A1122;
  --bg-3:#050810;
  --glass:rgba(255,255,255,0.045);
  --glass-strong:rgba(255,255,255,0.075);
  --line:rgba(255,255,255,0.08);
  --card-line:rgba(255,255,255,0.10);
  --highlight:rgba(255,255,255,0.18);
  --primary:#2B6CFF;
  --primary-soft:rgba(43,108,255,0.12);
  --primary-line:rgba(43,108,255,0.30);
  --accent:#1FE0A8;
  --warn:#FFC24B;
  --danger:#FF5A76;
  --orange:#FF8A3D;
  --text:#EAF0FB;
  --text-2:#A6B4CE;
  --text-3:#6C7A97;
  --radius-card:16px;
  --radius-btn:12px;
  --radius-img:12px;
  --radius-input:10px;
  --shadow-card:0 8px 28px rgba(0,0,0,0.35);
  --shadow-hover:0 16px 44px rgba(0,0,0,0.45);
  --shadow-btn:0 8px 28px rgba(43,108,255,0.45);
  --space-section:96px;
  --mono:"Inter","Space Grotesk",ui-monospace,SFMono-Regular,Menlo,monospace;
}
*,*::before,*::after{box-sizing:border-box}
html{-webkit-text-size-adjust:100%;scroll-behavior:smooth}
body{
  margin:0;
  background:var(--bg);
  color:var(--text);
  font-family:"PingFang SC","Microsoft YaHei","Noto Sans SC","Hiragino Sans GB",system-ui,-apple-system,sans-serif;
  font-size:16px;
  line-height:1.8;
  -webkit-font-smoothing:antialiased;
}
img{display:block;max-width:100%;height:auto;border-radius:var(--radius-img);object-fit:cover}
a{color:inherit;text-decoration:none}
a:focus-visible,button:focus-visible,input:focus-visible,select:focus-visible,textarea:focus-visible{
  outline:2px solid var(--accent);outline-offset:2px;border-radius:6px;
}
h1,h2,h3,h4{margin:0;line-height:1.35;font-weight:650;letter-spacing:-0.2px}
h1{font-size:44px;font-weight:700;letter-spacing:-0.5px}
h2{font-size:30px}
h3{font-size:20px;font-weight:600}
h4{font-size:16px;font-weight:600}
p{margin:0 0 0.9em}
p:last-child{margin-bottom:0}
ul{margin:0;padding:0;list-style:none}
button{font-family:inherit;cursor:pointer}
input,select,textarea{font-family:inherit;font-size:15px;color:var(--text)}
.container{width:100%;max-width:1200px;margin:0 auto;padding:0 24px}
.section{padding:var(--space-section) 0}
.section-alt{background:var(--bg-2)}
.section-head{display:flex;align-items:flex-end;justify-content:space-between;gap:24px;margin-bottom:36px}
.section-title{display:flex;gap:14px;align-items:flex-start}
.section-title .bar{width:3px;align-self:stretch;min-height:34px;background:var(--primary);border-radius:2px}
.section-title .num{font-family:var(--mono);font-size:13px;color:var(--accent);letter-spacing:1px;display:block;margin-bottom:2px}
.section-title h2{font-size:30px}
.section-title p{margin:8px 0 0;color:var(--text-2);font-size:15px;max-width:640px}
.link-more{color:var(--primary);font-size:14px;display:inline-flex;align-items:center;gap:6px;white-space:nowrap}
.link-more .arrow{transition:transform 180ms ease-out}
.link-more:hover{text-decoration:underline}
.link-more:hover .arrow{transform:translateX(3px)}

/* ---------- 顶部信息条 ---------- */
.topbar{background:var(--bg-3);border-bottom:1px solid var(--line);font-size:12px;color:var(--text-3)}
.topbar-inner{display:flex;align-items:center;justify-content:space-between;gap:18px;height:36px}
.topbar .site-url{color:var(--text-2)}
.topbar .site-url:hover{color:var(--primary)}
.topbar-note{flex:1;text-align:center;white-space:nowrap;overflow:hidden;text-overflow:ellipsis;color:var(--text-3)}
.topbar-actions{display:flex;align-items:center;gap:10px}
.pill-link{
  display:inline-flex;align-items:center;height:24px;padding:0 12px;border-radius:999px;
  border:1px solid var(--line);color:var(--text-2);transition:all 180ms ease-out;
}
.pill-link:hover{border-color:var(--primary-line);color:var(--text);background:var(--primary-soft)}
.pill-link.solid{background:var(--primary);border-color:var(--primary);color:#fff}

/* ---------- 导航 ---------- */
.site-header{
  position:sticky;top:0;z-index:60;
  background:rgba(6,10,22,0.82);
  backdrop-filter:blur(18px);
  border-bottom:1px solid transparent;
  transition:background 200ms ease-out,border-color 200ms ease-out;
}
.site-header.is-scrolled{background:rgba(5,8,16,0.94);border-bottom-color:var(--line)}
.navbar{display:flex;align-items:center;gap:22px;height:68px}
.brand{display:flex;align-items:center;gap:10px;min-height:28px}
.brand-mark{
  width:32px;height:32px;flex:0 0 32px;display:grid;place-items:center;
  background:linear-gradient(140deg,var(--primary),#1b4fd0);
  color:#fff;font-weight:700;font-size:16px;
  border-radius:10px 10px 10px 2px;
  box-shadow:0 6px 18px rgba(43,108,255,0.35);
}
.brand-text{display:flex;flex-direction:column;line-height:1.15}
.brand-name{font-size:15px;font-weight:700;letter-spacing:-0.2px;white-space:nowrap}
.brand-sub{font-size:10px;letter-spacing:1.6px;color:var(--text-3);font-family:var(--mono)}
.nav-links{display:flex;align-items:center;gap:4px;margin-left:8px}
.nav-link{
  position:relative;padding:8px 12px;font-size:14px;color:var(--text-2);
  border-radius:8px;transition:color 160ms ease-out,background 160ms ease-out;
}
.nav-link::after{
  content:"";position:absolute;left:12px;right:12px;bottom:2px;height:2px;
  background:var(--primary);transform:scaleX(0);transform-origin:left;
  transition:transform 180ms ease-out;border-radius:2px;
}
.nav-link:hover{color:var(--text);background:rgba(255,255,255,0.04)}
.nav-link:hover::after{transform:scaleX(1)}
.nav-link.is-active{color:var(--text)}
.nav-link.is-active::after{transform:scaleX(1)}
.nav-right{display:flex;align-items:center;gap:12px;margin-left:auto}
.nav-search{
  display:inline-flex;align-items:center;gap:7px;height:36px;padding:0 12px;
  border:1px solid var(--line);border-radius:999px;font-size:13px;color:var(--text-2);
  transition:all 180ms ease-out;
}
.nav-search:hover{border-color:var(--primary-line);color:var(--text);background:var(--primary-soft)}
.nav-toggle{
  display:none;width:42px;height:42px;border:1px solid var(--line);border-radius:10px;
  background:transparent;position:relative;
}
.nav-toggle span,.nav-toggle span::before,.nav-toggle span::after{
  position:absolute;left:50%;top:50%;width:18px;height:2px;background:var(--text);
  transform:translate(-50%,-50%);border-radius:2px;transition:all 180ms ease-out;
  content:"";
}
.nav-toggle span::before{top:-6px;left:0;transform:none}
.nav-toggle span::after{top:6px;left:0;transform:none}
.nav-toggle[aria-expanded="true"] span{background:transparent}
.nav-toggle[aria-expanded="true"] span::before{top:0;transform:rotate(45deg)}
.nav-toggle[aria-expanded="true"] span::after{top:0;transform:rotate(-45deg)}

/* 抽屉 */
.drawer-mask{
  position:fixed;inset:0;background:rgba(3,6,14,0.7);backdrop-filter:blur(3px);
  opacity:0;visibility:hidden;transition:opacity 200ms ease-out,visibility 200ms ease-out;z-index:70;
}
.drawer-mask.is-open{opacity:1;visibility:visible}
.drawer{
  position:fixed;top:0;right:0;bottom:0;width:min(320px,86vw);z-index:80;
  background:#070C1C;border-left:1px solid var(--line);
  padding:22px 20px;transform:translateX(100%);transition:transform 220ms ease-out;
  overflow-y:auto;
}
.drawer.is-open{transform:translateX(0)}
.drawer-head{display:flex;align-items:center;justify-content:space-between;margin-bottom:18px}
.drawer-close{width:40px;height:40px;border:1px solid var(--line);background:transparent;border-radius:10px;color:var(--text-2);font-size:18px}
.drawer-nav{display:flex;flex-direction:column;gap:4px}
.drawer-nav a{padding:13px 12px;border-radius:10px;color:var(--text-2);font-size:15px;border:1px solid transparent}
.drawer-nav a:hover,.drawer-nav a.is-active{color:var(--text);background:var(--glass);border-color:var(--card-line)}
.drawer-cta{margin-top:18px;display:block;text-align:center}

/* ---------- 按钮 ---------- */
.btn{
  display:inline-flex;align-items:center;justify-content:center;gap:8px;
  height:44px;padding:0 22px;border-radius:var(--radius-btn);font-size:15px;font-weight:600;
  border:1px solid transparent;transition:all 180ms ease-out;white-space:nowrap;
}
.btn-primary{background:var(--primary);color:#fff;box-shadow:var(--shadow-btn);border-color:var(--primary)}
.btn-primary:hover{transform:translateY(-2px);box-shadow:0 12px 34px rgba(43,108,255,0.55);filter:brightness(1.06)}
.btn-primary:active{transform:translateY(1px);box-shadow:0 4px 16px rgba(43,108,255,0.35)}
.btn-ghost{background:transparent;border-color:var(--line);color:var(--text-2)}
.btn-ghost:hover{border-color:var(--primary-line);color:var(--text);background:rgba(43,108,255,0.08)}
.btn-sm{height:36px;padding:0 16px;font-size:13.5px;border-radius:10px}
.btn-block{width:100%}

/* ---------- 内页 Hero ---------- */
.page-hero{
  position:relative;overflow:hidden;
  padding:78px 0 64px;
  background:
    linear-gradient(180deg,rgba(6,10,22,0.72) 0%,rgba(6,10,22,0.92) 70%,var(--bg) 100%),
    url("/assets/images/backpic/back-1.webp") center/cover no-repeat;
}
.page-hero::before{
  content:"";position:absolute;inset:0;
  background-image:linear-gradient(115deg,rgba(255,255,255,0.055) 1px,transparent 1px),
                   linear-gradient(65deg,rgba(255,255,255,0.04) 1px,transparent 1px);
  background-size:96px 96px,140px 140px;
  pointer-events:none;
  opacity:0.7;
}
.page-hero .container{position:relative;z-index:1}
.crumbs{display:flex;align-items:center;gap:8px;font-size:13px;color:var(--text-3);margin-bottom:22px;flex-wrap:wrap}
.crumbs a:hover{color:var(--primary)}
.crumbs .sep{color:var(--text-3);opacity:0.6}
.hero-badge{
  display:inline-flex;align-items:center;gap:8px;height:26px;padding:0 12px;border-radius:999px;
  background:var(--primary-soft);border:1px solid var(--primary-line);color:#9CC0FF;
  font-size:12.5px;letter-spacing:0.4px;margin-bottom:18px;
}
.hero-badge .dot{width:6px;height:6px;border-radius:50%;background:var(--accent);box-shadow:0 0 10px var(--accent)}
.page-hero h1{max-width:820px;margin-bottom:16px}
.page-hero .lede{max-width:720px;color:var(--text-2);font-size:16px;margin-bottom:26px}
.hero-stats{
  display:flex;flex-wrap:wrap;gap:14px;
}
.hero-stat{
  border:1px solid var(--card-line);background:var(--glass);backdrop-filter:blur(18px);
  border-radius:14px;padding:14px 20px;min-width:150px;
  box-shadow:var(--shadow-card);
}
.hero-stat .v{font-family:var(--mono);font-size:22px;color:var(--text);letter-spacing:-0.5px}
.hero-stat .k{font-size:12.5px;color:var(--text-3);margin-top:2px}

/* ---------- 主体布局 ---------- */
.layout{display:grid;grid-template-columns:4fr 8fr;gap:24px;align-items:start}
.panel{
  background:var(--glass);border:1px solid var(--card-line);border-left:1px solid var(--highlight);
  backdrop-filter:blur(18px);border-radius:var(--radius-card);box-shadow:var(--shadow-card);
}
.filters{padding:24px;position:sticky;top:96px}
.filters h3{display:flex;align-items:center;gap:8px;margin-bottom:6px}
.filters .filter-note{font-size:13px;color:var(--text-3);margin-bottom:18px}
.filter-group{padding-top:16px;margin-top:16px;border-top:1px solid var(--line)}
.filter-group:first-of-type{padding-top:0;margin-top:0;border-top:0}
.filter-group .group-label{font-size:13px;color:var(--text-2);letter-spacing:0.6px;margin-bottom:10px;display:block}
.check{
  display:flex;align-items:center;gap:10px;padding:9px 10px;border-radius:10px;
  font-size:14px;color:var(--text-2);cursor:pointer;transition:all 160ms ease-out;border:1px solid transparent;
}
.check:hover{background:rgba(255,255,255,0.04);color:var(--text);border-color:var(--card-line)}
.check input{position:absolute;opacity:0;pointer-events:none}
.check .box{
  width:18px;height:18px;flex:0 0 18px;border:1px solid var(--card-line);border-radius:6px;
  display:grid;place-items:center;background:rgba(0,0,0,0.25);transition:all 160ms ease-out;
}
.check .box::after{content:"";width:8px;height:8px;border-radius:3px;background:var(--primary);transform:scale(0);transition:transform 160ms ease-out}
.check input:checked + .box{border-color:var(--primary);background:var(--primary-soft)}
.check input:checked + .box::after{transform:scale(1)}
.check input:checked ~ .txt{color:var(--text)}
.filter-actions{display:flex;gap:10px;margin-top:20px}
.filter-actions .btn{flex:1}

.grid-2{display:grid;grid-template-columns:repeat(2,minmax(0,1fr));gap:24px}
.card{
  position:relative;display:flex;flex-direction:column;overflow:hidden;
  background:var(--glass);border:1px solid var(--card-line);border-left:1px solid var(--highlight);
  backdrop-filter:blur(18px);border-radius:var(--radius-card);
  box-shadow:var(--shadow-card);transition:transform 200ms ease-out,box-shadow 200ms ease-out,border-color 200ms ease-out;
}
.card::after{
  content:"";position:absolute;top:0;right:0;width:44px;height:44px;
  background:linear-gradient(225deg,rgba(43,108,255,0.22),transparent 62%);
  clip-path:polygon(100% 0,100% 100%,0 0);pointer-events:none;
}
.card:hover{transform:translateY(-4px);box-shadow:var(--shadow-hover);border-color:var(--primary-line)}
.card-media{overflow:hidden;border-radius:0}
.card-media img{width:100%;height:190px;border-radius:0;transition:transform 260ms ease-out}
.card:hover .card-media img{transform:scale(1.03)}
.card-body{padding:22px 24px 24px;display:flex;flex-direction:column;gap:10px;flex:1}
.card-meta{display:flex;align-items:center;gap:10px;flex-wrap:wrap}
.badge{
  display:inline-flex;align-items:center;height:24px;padding:0 10px;border-radius:6px;
  font-size:12px;letter-spacing:0.3px;background:var(--primary-soft);color:#9CC0FF;border:1px solid var(--primary-line);
}
.badge-accent{background:rgba(31,224,168,0.12);color:#7FF0CB;border-color:rgba(31,224,168,0.28)}
.badge-warn{background:rgba(255,194,75,0.12);color:#FFD98A;border-color:rgba(255,194,75,0.28)}
.time{font-family:var(--mono);font-size:12.5px;color:var(--text-3)}
.card h3{font-size:18px;line-height:1.5}
.card h3 a{transition:color 160ms ease-out}
.card:hover h3 a{color:#BBD3FF}
.excerpt{
  color:var(--text-2);font-size:14px;line-height:1.75;
  display:-webkit-box;-webkit-line-clamp:2;-webkit-box-orient:vertical;overflow:hidden;
}
.card-foot{margin-top:auto;padding-top:6px;display:flex;align-items:center;justify-content:space-between;gap:12px}

/* 分页 */
.pager{display:flex;align-items:center;gap:8px;margin-top:34px;justify-content:center;flex-wrap:wrap}
.pager a,.pager span{
  width:36px;height:36px;display:grid;place-items:center;border-radius:10px;font-size:14px;
  border:1px solid var(--card-line);background:var(--glass);color:var(--text-2);transition:all 160ms ease-out;
}
.pager a:hover{border-color:var(--primary-line);color:var(--text)}
.pager .current{background:var(--primary);border-color:var(--primary);color:#fff;font-weight:600}
.pager .wide{width:auto;padding:0 14px;font-family:inherit}

/* ---------- 精选板块 ---------- */
.picks{display:flex;flex-direction:column;gap:16px}
.pick{
  display:grid;grid-template-columns:96px 1fr auto;gap:18px;align-items:center;
  padding:16px 20px;background:var(--glass);border:1px solid var(--card-line);
  border-radius:14px;transition:all 200ms ease-out;
}
.pick:hover{border-color:var(--primary-line);transform:translateY(-3px);box-shadow:var(--shadow-card)}
.pick img{width:96px;height:72px;border-radius:10px}
.pick .t{font-size:15px;font-weight:600;line-height:1.5;margin-bottom:4px}
.pick .m{display:flex;gap:12px;align-items:center;flex-wrap:wrap}
.pick .go{font-size:20px;color:var(--primary)}

/* ---------- FAQ ---------- */
.faq-layout{display:grid;grid-template-columns:4fr 8fr;gap:24px;align-items:start}
.faq-aside{padding:26px}
.faq-aside h2{font-size:24px;margin-bottom:10px}
.faq-aside p{color:var(--text-2);font-size:14px;margin-bottom:20px}
.faq-list{display:flex;flex-direction:column;gap:12px}
.faq-item{
  background:var(--glass);border:1px solid var(--card-line);border-radius:14px;overflow:hidden;
  transition:border-color 200ms ease-out,background 200ms ease-out;
}
.faq-item.is-open{border-color:var(--primary-line);background:var(--glass-strong)}
.faq-q{
  width:100%;display:flex;align-items:center;justify-content:space-between;gap:16px;
  padding:18px 22px;background:transparent;border:0;color:var(--text);
  font-size:16px;font-weight:600;text-align:left;line-height:1.5;
}
.faq-q .mark{
  position:relative;width:20px;height:20px;flex:0 0 20px;
}
.faq-q .mark::before,.faq-q .mark::after{
  content:"";position:absolute;left:50%;top:50%;background:var(--primary);border-radius:2px;
  transform:translate(-50%,-50%);transition:transform 200ms ease-out;
}
.faq-q .mark::before{width:14px;height:2px}
.faq-q .mark::after{width:2px;height:14px}
.faq-item.is-open .mark::after{transform:translate(-50%,-50%) scaleY(0)}
.faq-a{
  max-height:0;overflow:hidden;transition:max-height 240ms ease-out;
  border-left:3px solid transparent;
}
.faq-item.is-open .faq-a{border-left-color:var(--primary)}
.faq-a-inner{padding:0 22px 20px 22px;color:var(--text-2);font-size:14.5px;line-height:1.85}

/* ---------- CTA ---------- */
.cta-wrap{padding-bottom:var(--space-section)}
.cta{
  position:relative;overflow:hidden;border-radius:20px;
  border:1px solid var(--card-line);background:var(--glass);backdrop-filter:blur(18px);
  padding:42px;display:grid;grid-template-columns:1.1fr 0.9fr;gap:40px;align-items:center;
  box-shadow:var(--shadow-card);
}
.cta::before{
  content:"";position:absolute;inset:-40% -10% auto auto;width:520px;height:520px;
  background:radial-gradient(circle,rgba(43,108,255,0.22),transparent 62%);pointer-events:none;
}
.cta > *{position:relative;z-index:1}
.cta h2{font-size:28px;margin-bottom:12px}
.cta .desc{color:var(--text-2);font-size:15px;margin-bottom:18px}
.cta-points{display:flex;flex-direction:column;gap:10px}
.cta-points li{display:flex;align-items:flex-start;gap:10px;font-size:14.5px;color:var(--text-2)}
.cta-points .tick{
  width:18px;height:18px;flex:0 0 18px;border-radius:50%;display:grid;place-items:center;
  background:rgba(31,224,168,0.14);color:var(--accent);font-size:11px;margin-top:4px;
}
.form-card{background:rgba(4,8,18,0.55);border:1px solid var(--card-line);border-radius:16px;padding:26px}
.field{margin-bottom:16px}
.field label{display:block;font-size:13px;color:var(--text-2);margin-bottom:8px}
.field input,.field select{
  width:100%;height:44px;padding:0 14px;border-radius:var(--radius-input);
  background:rgba(0,0,0,0.35);border:1px solid var(--card-line);color:var(--text);
  transition:border-color 160ms ease-out,box-shadow 160ms ease-out;
}
.field input::placeholder{color:var(--text-3)}
.field input:focus,.field select:focus{
  outline:none;border-color:var(--primary);box-shadow:0 0 0 4px rgba(43,108,255,0.12);
}
.field select{appearance:none;background-image:linear-gradient(45deg,transparent 50%,var(--text-3) 50%),linear-gradient(135deg,var(--text-3) 50%,transparent 50%);background-position:calc(100% - 20px) 19px,calc(100% - 15px) 19px;background-size:5px 5px,5px 5px;background-repeat:no-repeat}
.form-note{font-size:12.5px;color:var(--text-3);margin-top:12px;line-height:1.7}
.form-note a{color:var(--primary)}
.form-ok{display:none;margin-top:12px;font-size:13px;color:var(--accent)}

/* ---------- 页脚 ---------- */
.site-footer{background:var(--bg-3);border-top:1px solid var(--line);padding:60px 0 0}
.footer-grid{display:grid;grid-template-columns:1.4fr 1fr 1fr 1fr;gap:36px;padding-bottom:40px}
.footer-brand p{color:var(--text-2);font-size:14px;margin-top:16px;max-width:340px}
.footer-col h4{font-size:14px;color:var(--text);margin-bottom:16px;letter-spacing:0.4px}
.footer-col ul{display:flex;flex-direction:column;gap:10px}
.footer-col a,.footer-col .static{font-size:13.5px;color:var(--text-2);transition:color 160ms ease-out}
.footer-col a:hover{color:var(--primary)}
.footer-bottom{
  border-top:1px solid var(--line);padding:20px 0 28px;
  display:flex;align-items:center;justify-content:space-between;gap:16px;flex-wrap:wrap;
  font-size:13px;color:var(--text-3);
}
.footer-bottom .links{display:flex;gap:18px;flex-wrap:wrap}
.footer-bottom .links a:hover{color:var(--primary)}

/* ---------- 响应式 ---------- */
@media (max-width:1439px){
  .container{max-width:1200px}
}
@media (max-width:1199px){
  h1{font-size:38px}
  .nav-links{gap:0}
  .nav-link{padding:8px 9px;font-size:13.5px}
}
@media (max-width:1023px){
  :root{--space-section:64px}
  h1{font-size:32px}
  h2{font-size:26px}
  .nav-links{display:none}
  .nav-toggle{display:block}
  .nav-search{display:none}
  .layout{grid-template-columns:1fr}
  .filters{position:static}
  .faq-layout{grid-template-columns:1fr}
  .cta{grid-template-columns:1fr;padding:32px}
  .footer-grid{grid-template-columns:1fr 1fr}
  .brand-sub{display:none}
}
@media (max-width:767px){
  :root{--space-section:48px}
  .container{padding:0 16px}
  h1{font-size:26px}
  h2{font-size:22px}
  h3{font-size:18px}
  body{font-size:15px}
  .page-hero{padding:52px 0 44px}
  .topbar-note{display:none}
  .topbar-inner{justify-content:space-between}
  .grid-2{grid-template-columns:1fr}
  .card-media img{height:180px}
  .btn{width:100%}
  .nav-cta{display:none}
  .pill-link{height:26px}
  .hero-stat{min-width:0;width:100%}
  .pick{grid-template-columns:72px 1fr;gap:14px}
  .pick img{width:72px;height:56px}
  .pick .go{display:none}
  .section-head{flex-direction:column;align-items:flex-start;gap:14px}
  .footer-grid{grid-template-columns:1fr;gap:28px}
  .footer-bottom{flex-direction:column;align-items:flex-start}
  .filter-actions{flex-direction:column}
}
@media (max-width:520px){
  h1{font-size:24px}
  .brand-name{font-size:13.5px;white-space:normal}
  .cta{padding:24px 18px}
  .form-card{padding:20px 16px}
  .card-body{padding:18px}
}
@media (prefers-reduced-motion:reduce){
  *{transition:none!important;animation:none!important;scroll-behavior:auto!important}
}

/* roulang page: category2 */
:root{
  --bg:#060A16;
  --bg-soft:#0A1122;
  --bg-deep:#050810;
  --panel:rgba(255,255,255,.045);
  --panel-strong:rgba(255,255,255,.075);
  --primary:#2B6CFF;
  --primary-soft:rgba(43,108,255,.12);
  --primary-line:rgba(43,108,255,.30);
  --accent:#1FE0A8;
  --accent-soft:rgba(31,224,168,.12);
  --warn:#FF8A3D;
  --warn-soft:rgba(255,138,61,.10);
  --alert:#FFC24B;
  --danger:#FF5A76;
  --text:#EAF0FB;
  --text-2:#A6B4CE;
  --text-3:#6C7A97;
  --line:rgba(255,255,255,.08);
  --card-line:rgba(255,255,255,.10);
  --inner-light:rgba(255,255,255,.18);
  --radius-s:10px;
  --radius-m:12px;
  --radius-l:16px;
  --radius-xl:20px;
  --shadow-1:0 8px 28px rgba(0,0,0,.35);
  --shadow-2:0 16px 44px rgba(0,0,0,.45);
  --glow:0 8px 28px rgba(43,108,255,.45);
  --glow-lg:0 14px 38px rgba(43,108,255,.55);
  --container:1200px;
  --gap:24px;
  --section-y:96px;
  --font-cn:"PingFang SC","Hiragino Sans GB","Microsoft YaHei","Noto Sans SC",system-ui,-apple-system,"Segoe UI",sans-serif;
  --font-num:"Inter","Space Grotesk","SFMono-Regular",Menlo,Consolas,monospace;
}

*,*::before,*::after{box-sizing:border-box;}
html{-webkit-text-size-adjust:100%;scroll-behavior:smooth;}
body{
  margin:0;
  background:var(--bg);
  color:var(--text);
  font-family:var(--font-cn);
  font-size:16px;
  line-height:1.8;
  letter-spacing:.1px;
  overflow-x:hidden;
  -webkit-font-smoothing:antialiased;
}
img{max-width:100%;display:block;height:auto;}
a{color:inherit;text-decoration:none;transition:color .16s ease,opacity .16s ease;}
button,input,select,textarea{font-family:inherit;font-size:inherit;color:inherit;}
button{cursor:pointer;border:0;background:none;}
ul,ol{margin:0;padding:0;list-style:none;}
h1,h2,h3,h4,p{margin:0;}
p+p{margin-top:.9em;}
h1,h2,h3,h4{line-height:1.35;letter-spacing:-.4px;}
:focus-visible{outline:2px solid var(--accent);outline-offset:2px;border-radius:6px;}

.container{
  width:100%;
  max-width:var(--container);
  margin:0 auto;
  padding:0 24px;
}

/* ---------- 顶部信息条 ---------- */
.topbar{
  background:var(--bg-deep);
  border-bottom:1px solid var(--line);
  font-size:12px;
  color:var(--text-3);
  height:36px;
  display:flex;
  align-items:center;
}
.topbar .container{
  display:flex;
  align-items:center;
  justify-content:space-between;
  gap:16px;
}
.topbar-left a{color:var(--text-3);}
.topbar-left a:hover{color:var(--text-2);}
.topbar-mid{
  flex:1;
  min-width:0;
  text-align:center;
  white-space:nowrap;
  overflow:hidden;
  text-overflow:ellipsis;
  color:var(--text-2);
}
.topbar-mid .dot{
  display:inline-block;
  width:6px;height:6px;
  border-radius:50%;
  background:var(--accent);
  margin-right:8px;
  vertical-align:middle;
  box-shadow:0 0 10px rgba(31,224,168,.8);
}
.topbar-right{display:flex;align-items:center;gap:10px;}
.topbar-right a{
  padding:3px 12px;
  border:1px solid var(--card-line);
  border-radius:999px;
  color:var(--text-2);
}
.topbar-right a:hover{border-color:var(--primary-line);color:var(--text);}
.topbar-right a.solid{
  background:var(--primary);
  border-color:var(--primary);
  color:#fff;
}
.topbar-right a.solid:hover{background:#3d7bff;color:#fff;}

/* ---------- 头部与导航 ---------- */
.site-header{
  position:sticky;
  top:0;
  z-index:60;
  background:rgba(6,10,22,.86);
  backdrop-filter:blur(18px);
  -webkit-backdrop-filter:blur(18px);
  border-bottom:1px solid transparent;
  transition:background .22s ease,border-color .22s ease,box-shadow .22s ease;
}
.site-header.is-scrolled{
  background:rgba(5,8,16,.96);
  border-bottom-color:var(--line);
  box-shadow:0 10px 30px rgba(0,0,0,.45);
}
.navbar{
  display:flex;
  align-items:center;
  justify-content:space-between;
  gap:20px;
  min-height:68px;
}
.brand{
  display:flex;
  align-items:center;
  gap:12px;
  flex-shrink:0;
}
.brand-mark{
  width:38px;height:38px;
  display:flex;align-items:center;justify-content:center;
  font-family:var(--font-num);
  font-weight:700;
  font-size:19px;
  color:#fff;
  background:linear-gradient(140deg,#2B6CFF 0%,#1FE0A8 130%);
  border-radius:12px;
  clip-path:polygon(0 0,100% 0,100% 72%,72% 100%,0 100%);
  box-shadow:0 6px 20px rgba(43,108,255,.4);
}
.brand-text{display:flex;flex-direction:column;line-height:1.15;}
.brand-name{
  font-size:16px;
  font-weight:700;
  color:var(--text);
  letter-spacing:-.3px;
  min-height:28px;
  display:flex;
  align-items:center;
}
.brand-sub{
  font-family:var(--font-num);
  font-size:10px;
  letter-spacing:1.6px;
  color:var(--text-3);
  text-transform:uppercase;
}
.nav-links{
  display:flex;
  align-items:center;
  gap:6px;
  flex:1;
  justify-content:center;
}
.nav-link{
  position:relative;
  padding:10px 12px;
  font-size:14.5px;
  color:var(--text-2);
  border-radius:8px;
  white-space:nowrap;
}
.nav-link::after{
  content:"";
  position:absolute;
  left:12px;right:12px;bottom:2px;
  height:2px;
  background:var(--primary);
  border-radius:2px;
  transform:scaleX(0);
  transform-origin:left center;
  transition:transform .18s ease;
}
.nav-link:hover{color:var(--text);}
.nav-link:hover::after{transform:scaleX(1);}
.nav-link.is-active{color:var(--text);font-weight:600;}
.nav-link.is-active::after{transform:scaleX(1);}
.nav-right{display:flex;align-items:center;gap:12px;flex-shrink:0;}
.nav-search{
  display:inline-flex;
  align-items:center;
  gap:7px;
  font-size:13.5px;
  color:var(--text-2);
  padding:8px 14px;
  border:1px solid var(--card-line);
  border-radius:999px;
  background:var(--panel);
}
.nav-search:hover{color:var(--text);border-color:var(--primary-line);}
.nav-toggle{
  display:none;
  width:44px;height:44px;
  border:1px solid var(--card-line);
  border-radius:12px;
  position:relative;
  background:var(--panel);
}
.nav-toggle span,
.nav-toggle span::before,
.nav-toggle span::after{
  position:absolute;
  left:50%;
  width:18px;height:2px;
  background:var(--text);
  border-radius:2px;
  transform:translateX(-50%);
  transition:transform .2s ease,opacity .2s ease;
}
.nav-toggle span{top:50%;margin-top:-1px;}
.nav-toggle span::before{content:"";top:-6px;left:0;transform:none;}
.nav-toggle span::after{content:"";top:6px;left:0;transform:none;}
.nav-toggle.is-open span{background:transparent;}
.nav-toggle.is-open span::before{transform:rotate(45deg);top:0;}
.nav-toggle.is-open span::after{transform:rotate(-45deg);top:0;}
.nav-mask{
  position:fixed;
  inset:0;
  background:rgba(3,6,14,.72);
  backdrop-filter:blur(3px);
  opacity:0;
  visibility:hidden;
  transition:opacity .22s ease,visibility .22s ease;
  z-index:55;
}
.nav-mask.is-open{opacity:1;visibility:visible;}

/* ---------- 按钮 ---------- */
.btn{
  display:inline-flex;
  align-items:center;
  justify-content:center;
  gap:8px;
  height:46px;
  padding:0 26px;
  font-size:15px;
  font-weight:600;
  border-radius:12px;
  transition:transform .18s ease,box-shadow .18s ease,background .18s ease,color .18s ease,border-color .18s ease;
  white-space:nowrap;
}
.btn-primary{
  background:linear-gradient(120deg,#2B6CFF,#4b83ff);
  color:#fff;
  border:1px solid rgba(43,108,255,.9);
  box-shadow:var(--glow);
}
.btn-primary:hover{
  transform:translateY(-2px);
  box-shadow:var(--glow-lg);
  filter:brightness(1.06);
}
.btn-primary:active{transform:translateY(-1px);box-shadow:0 6px 18px rgba(43,108,255,.35);}
.btn-ghost{
  background:transparent;
  color:var(--text);
  border:1px solid var(--card-line);
}
.btn-ghost:hover{background:var(--primary-soft);border-color:var(--primary-line);transform:translateY(-2px);}
.btn-sm{height:34px;padding:0 16px;font-size:13px;border-radius:999px;}
.btn-block{width:100%;}
.link-arrow{
  display:inline-flex;
  align-items:center;
  gap:6px;
  color:var(--primary);
  font-size:14px;
  font-weight:600;
}
.link-arrow span.arrow{transition:transform .18s ease;}
.link-arrow:hover span.arrow{transform:translateX(3px);}
.link-arrow:hover{text-decoration:underline;text-underline-offset:4px;}

/* ---------- 内页横幅 ---------- */
.page-hero{
  position:relative;
  padding:72px 0 64px;
  overflow:hidden;
  background-color:var(--bg-soft);
  background-image:linear-gradient(180deg,rgba(6,10,22,.90) 0%,rgba(6,10,22,.96) 70%,var(--bg) 100%),url("/assets/images/backpic/back-1.webp");
  background-size:cover;
  background-position:center;
}
.page-hero::before{
  content:"";
  position:absolute;
  inset:0;
  background-image:linear-gradient(115deg,rgba(255,255,255,.055) 1px,transparent 1px);
  background-size:66px 66px;
  opacity:.6;
  pointer-events:none;
}
.page-hero .container{position:relative;z-index:2;}
.breadcrumb{
  display:flex;
  align-items:center;
  gap:8px;
  font-size:13px;
  color:var(--text-3);
  margin-bottom:22px;
}
.breadcrumb a:hover{color:var(--text-2);}
.breadcrumb .sep{color:var(--text-3);opacity:.6;}
.breadcrumb .current{color:var(--text-2);}
.tag-row{display:flex;flex-wrap:wrap;gap:10px;margin-bottom:18px;}
.tag{
  display:inline-flex;
  align-items:center;
  height:24px;
  padding:0 10px;
  font-size:12px;
  border-radius:6px;
  background:var(--primary-soft);
  color:#9dbaff;
  border:1px solid rgba(43,108,255,.22);
}
.tag.tag-accent{background:var(--accent-soft);color:#7bf0cd;border-color:rgba(31,224,168,.22);}
.tag.tag-warn{background:var(--warn-soft);color:#ffb37c;border-color:rgba(255,138,61,.24);}
.page-hero h1{
  font-size:44px;
  font-weight:700;
  letter-spacing:-.5px;
  max-width:920px;
}
.page-hero h1 .hl{
  background:linear-gradient(100deg,#2B6CFF,#1FE0A8);
  -webkit-background-clip:text;
  background-clip:text;
  color:transparent;
}
.hero-lead{
  margin-top:16px;
  max-width:760px;
  font-size:16px;
  color:var(--text-2);
}
.hero-metrics{
  display:grid;
  grid-template-columns:repeat(4,1fr);
  gap:16px;
  margin-top:36px;
  max-width:900px;
}
.metric{
  padding:18px 20px;
  border-radius:var(--radius-l);
  border:1px solid var(--card-line);
  background:var(--panel);
  backdrop-filter:blur(18px);
  -webkit-backdrop-filter:blur(18px);
  box-shadow:var(--shadow-1);
  position:relative;
  overflow:hidden;
}
.metric::before{
  content:"";
  position:absolute;
  top:0;left:0;right:0;height:1px;
  background:var(--inner-light);
}
.metric .num{
  font-family:var(--font-num);
  font-size:26px;
  font-weight:700;
  color:var(--text);
  letter-spacing:-.5px;
}
.metric .num small{font-size:13px;color:var(--accent);margin-left:4px;font-weight:600;}
.metric .lbl{font-size:13px;color:var(--text-3);margin-top:4px;}

/* ---------- 锚点条 ---------- */
.anchor-bar{
  position:sticky;
  top:68px;
  z-index:40;
  background:rgba(6,10,22,.94);
  backdrop-filter:blur(16px);
  -webkit-backdrop-filter:blur(16px);
  border-top:1px solid var(--line);
  border-bottom:1px solid var(--line);
}
.anchor-inner{
  display:flex;
  align-items:center;
  gap:10px;
  padding:12px 0;
  overflow-x:auto;
  scrollbar-width:none;
}
.anchor-inner::-webkit-scrollbar{display:none;}
.pill{
  flex:0 0 auto;
  display:inline-flex;
  align-items:center;
  gap:8px;
  height:36px;
  padding:0 18px;
  font-size:14px;
  color:var(--text-2);
  border:1px solid var(--card-line);
  border-radius:999px;
  background:var(--panel);
  transition:color .16s ease,border-color .16s ease,background .16s ease,transform .16s ease;
}
.pill i{
  font-style:normal;
  font-family:var(--font-num);
  font-size:11px;
  color:var(--accent);
}
.pill:hover{color:var(--text);border-color:var(--primary-line);transform:translateY(-1px);}
.pill.is-current{color:#fff;border-color:rgba(43,108,255,.6);background:var(--primary-soft);}

/* ---------- 通用板块 ---------- */
.section{padding:76px 0;}
.section-alt{background:var(--bg-soft);border-top:1px solid var(--line);border-bottom:1px solid var(--line);}
.section-head{
  display:flex;
  align-items:flex-start;
  justify-content:space-between;
  gap:24px;
  margin-bottom:32px;
  flex-wrap:wrap;
}
.sec-title{
  display:flex;
  align-items:center;
  gap:14px;
  font-size:28px;
  font-weight:650;
}
.sec-title::before{
  content:"";
  width:3px;
  height:26px;
  border-radius:3px;
  background:linear-gradient(180deg,#2B6CFF,#1FE0A8);
  flex:0 0 auto;
}
.sec-index{
  font-family:var(--font-num);
  font-size:13px;
  color:var(--text-3);
  letter-spacing:1px;
  padding-top:8px;
}
.sec-desc{color:var(--text-2);font-size:15px;margin-top:10px;max-width:680px;}

/* ---------- 8 / 4 分栏 ---------- */
.layout-main{
  display:grid;
  grid-template-columns:minmax(0,8fr) minmax(0,4fr);
  gap:40px;
  align-items:start;
}
.prose{max-width:100%;}
.chapter{
  scroll-margin-top:150px;
  padding-bottom:36px;
  margin-bottom:36px;
  border-bottom:1px dashed var(--line);
}
.chapter:last-child{border-bottom:0;margin-bottom:0;padding-bottom:0;}
.chapter-head{
  display:flex;
  align-items:baseline;
  gap:16px;
  margin-bottom:16px;
}
.chapter-num{
  font-family:var(--font-num);
  font-size:34px;
  font-weight:700;
  line-height:1;
  color:transparent;
  -webkit-text-stroke:1px rgba(31,224,168,.55);
  flex:0 0 auto;
}
.chapter h2{
  position:relative;
  font-size:26px;
  font-weight:650;
  padding-left:16px;
}
.chapter h2::before{
  content:"";
  position:absolute;
  left:0;top:6px;bottom:6px;
  width:3px;
  border-radius:3px;
  background:linear-gradient(180deg,#2B6CFF,#1FE0A8);
}
.chapter h3{
  font-size:19px;
  font-weight:600;
  margin:26px 0 10px;
  color:var(--text);
}
.chapter p{color:var(--text-2);}
.chapter p strong{color:var(--text);font-weight:600;}
.chapter ul{margin-top:14px;display:grid;gap:10px;}
.chapter ul li{
  position:relative;
  padding-left:22px;
  color:var(--text-2);
  font-size:15.5px;
}
.chapter ul li::before{
  content:"";
  position:absolute;
  left:2px;top:12px;
  width:7px;height:7px;
  border-radius:2px;
  background:var(--accent);
  transform:rotate(45deg);
}

/* ---------- 术语表 ---------- */
.table-wrap{
  margin-top:20px;
  border:1px solid var(--card-line);
  border-radius:var(--radius-l);
  overflow-x:auto;
  background:var(--panel);
}
table.terms{
  width:100%;
  min-width:560px;
  border-collapse:collapse;
  font-size:14.5px;
}
table.terms th,
table.terms td{
  padding:14px 18px;
  text-align:left;
  border-bottom:1px solid var(--line);
  color:var(--text-2);
}
table.terms thead th{
  background:rgba(43,108,255,.10);
  color:var(--text);
  font-weight:600;
  white-space:nowrap;
}
table.terms tbody tr:nth-child(even){background:rgba(255,255,255,.02);}
table.terms tbody tr:last-child td{border-bottom:0;}

/* ---------- 说明卡 ---------- */
.note-card{
  position:relative;
  margin:28px 0;
  padding:26px 28px;
  border:1px solid var(--card-line);
  background:var(--panel);
  backdrop-filter:blur(18px);
  -webkit-backdrop-filter:blur(18px);
  border-radius:var(--radius-l);
  clip-path:polygon(0 0,100% 0,100% calc(100% - 18px),calc(100% - 18px) 100%,0 100%);
  box-shadow:var(--shadow-1);
  overflow:hidden;
}
.note-card::before{
  content:"";
  position:absolute;
  top:0;left:0;right:0;height:1px;
  background:var(--inner-light);
}
.note-card .note-label{
  display:inline-flex;
  align-items:center;
  gap:8px;
  font-size:12px;
  letter-spacing:1px;
  color:var(--accent);
  font-family:var(--font-num);
  margin-bottom:12px;
}
.note-card h3{font-size:20px;font-weight:600;margin-bottom:10px;}
.note-card p{color:var(--text-2);font-size:15px;}

/* 路径节点 / 进度条 */
.flow{
  display:grid;
  grid-template-columns:repeat(3,1fr);
  gap:16px;
  margin-top:22px;
}
.flow-step{
  position:relative;
  padding:18px;
  border-radius:var(--radius-m);
  border:1px dashed var(--card-line);
  background:rgba(6,10,22,.5);
}
.flow-step::after{
  content:"";
  position:absolute;
  top:50%;
  right:-14px;
  width:12px;
  height:1px;
  border-top:1px dashed rgba(31,224,168,.5);
}
.flow-step:last-child::after{display:none;}
.flow-step .st-idx{
  font-family:var(--font-num);
  font-size:12px;
  color:var(--accent);
  letter-spacing:1px;
}
.flow-step h4{font-size:16px;font-weight:600;margin:6px 0 6px;}
.flow-step p{font-size:13.5px;color:var(--text-3);line-height:1.7;}
.progress-track{
  height:6px;
  border-radius:999px;
  background:rgba(255,255,255,.08);
  margin-top:20px;
  overflow:hidden;
}
.progress-fill{
  height:100%;
  width:66%;
  border-radius:999px;
  background:linear-gradient(90deg,#2B6CFF,#1FE0A8);
}

/* 图文说明卡 */
.media-card{
  display:grid;
  grid-template-columns:220px minmax(0,1fr);
  gap:24px;
  padding:22px;
  border:1px solid var(--card-line);
  border-radius:var(--radius-l);
  background:var(--panel);
  backdrop-filter:blur(18px);
  -webkit-backdrop-filter:blur(18px);
  box-shadow:var(--shadow-1);
  margin:28px 0;
}
.media-card .thumb{
  border-radius:var(--radius-m);
  overflow:hidden;
  background:linear-gradient(140deg,#111a2f,#0a1122);
}
.media-card .thumb img{
  width:100%;
  height:100%;
  min-height:140px;
  object-fit:cover;
  transition:transform .26s ease-out;
}
.media-card:hover .thumb img{transform:scale(1.03);}
.media-card h3{font-size:19px;font-weight:600;margin-bottom:10px;}
.media-card p{color:var(--text-2);font-size:14.5px;}
.change-list{margin-top:14px;display:grid;gap:10px;}
.change-list li{
  display:flex;
  align-items:center;
  gap:12px;
  font-size:13.5px;
  color:var(--text-2);
  padding-bottom:10px;
  border-bottom:1px dashed var(--line);
}
.change-list li:last-child{border-bottom:0;padding-bottom:0;}
.change-list .date{
  font-family:var(--font-num);
  color:var(--text-3);
  flex:0 0 auto;
}
.badge{
  display:inline-flex;
  align-items:center;
  height:24px;
  padding:0 10px;
  font-size:12px;
  border-radius:6px;
  background:var(--accent-soft);
  color:#7bf0cd;
}
.badge.warn{background:var(--warn-soft);color:#ffb37c;}

/* ---------- 侧栏目录 ---------- */
.side{
  position:sticky;
  top:150px;
  display:grid;
  gap:20px;
}
.side-card{
  padding:22px;
  border:1px solid var(--card-line);
  border-radius:var(--radius-l);
  background:var(--panel);
  backdrop-filter:blur(18px);
  -webkit-backdrop-filter:blur(18px);
  box-shadow:var(--shadow-1);
  position:relative;
  overflow:hidden;
}
.side-card::before{
  content:"";
  position:absolute;
  top:0;left:0;right:0;height:1px;
  background:var(--inner-light);
}
.side-card h3{
  font-size:15px;
  font-weight:600;
  letter-spacing:.4px;
  margin-bottom:14px;
  display:flex;
  align-items:center;
  gap:10px;
}
.side-card h3::before{
  content:"";
  width:3px;height:14px;
  border-radius:3px;
  background:var(--primary);
}
.toc-list{display:grid;gap:4px;}
.toc-list a{
  display:flex;
  align-items:center;
  gap:10px;
  padding:9px 10px;
  font-size:14px;
  color:var(--text-2);
  border-radius:8px;
  border-left:2px solid transparent;
}
.toc-list a i{
  font-style:normal;
  font-family:var(--font-num);
  font-size:11px;
  color:var(--text-3);
}
.toc-list a:hover{background:rgba(255,255,255,.04);color:var(--text);}
.toc-list a.is-active{
  color:#fff;
  background:var(--primary-soft);
  border-left-color:var(--primary);
}
.side-note{
  font-size:13.5px;
  color:var(--text-2);
  line-height:1.75;
}
.side-tags{display:flex;flex-wrap:wrap;gap:8px;margin-top:14px;}
.side-tags span{
  font-size:12px;
  padding:4px 10px;
  border-radius:6px;
  background:rgba(255,255,255,.05);
  color:var(--text-3);
}

/* ---------- 速查清单 ---------- */
.check-grid{
  display:grid;
  grid-template-columns:repeat(2,minmax(0,1fr));
  gap:18px;
  margin-top:26px;
}
.check-item{
  display:flex;
  gap:14px;
  padding:20px;
  border:1px solid var(--card-line);
  border-radius:var(--radius-l);
  background:var(--panel);
  transition:transform .2s ease-out,border-color .2s ease-out,box-shadow .2s ease-out;
}
.check-item:hover{
  transform:translateY(-4px);
  border-color:var(--primary-line);
  box-shadow:var(--shadow-2);
}
.check-item .ck{
  flex:0 0 auto;
  width:26px;height:26px;
  border-radius:8px;
  display:flex;align-items:center;justify-content:center;
  background:var(--accent-soft);
  color:var(--accent);
  font-size:14px;
  font-weight:700;
}
.check-item h3{font-size:16.5px;font-weight:600;margin-bottom:6px;}
.check-item p{font-size:14px;color:var(--text-2);}

/* ---------- FAQ ---------- */
.faq-list{display:grid;gap:12px;margin-top:8px;}
.faq-item{
  border:1px solid var(--card-line);
  border-radius:var(--radius-l);
  background:var(--panel);
  backdrop-filter:blur(18px);
  -webkit-backdrop-filter:blur(18px);
  overflow:hidden;
  transition:border-color .2s ease,background .2s ease;
}
.faq-item.is-open{border-color:var(--primary-line);box-shadow:var(--shadow-1);}
.faq-q{
  width:100%;
  display:flex;
  align-items:center;
  justify-content:space-between;
  gap:18px;
  padding:20px 24px;
  text-align:left;
  font-size:16px;
  font-weight:600;
  color:var(--text);
  position:relative;
}
.faq-q::before{
  content:"";
  position:absolute;
  left:0;top:14px;bottom:14px;
  width:3px;
  border-radius:3px;
  background:var(--primary);
  opacity:0;
  transition:opacity .2s ease;
}
.faq-item.is-open .faq-q::before{opacity:1;}
.faq-q .sign{
  flex:0 0 auto;
  width:26px;height:26px;
  border-radius:8px;
  border:1px solid var(--card-line);
  display:flex;align-items:center;justify-content:center;
  color:var(--accent);
  font-size:16px;
  transition:transform .2s ease-out,background .2s ease;
}
.faq-item.is-open .faq-q .sign{transform:rotate(45deg);background:var(--accent-soft);}
.faq-a{
  max-height:0;
  overflow:hidden;
  transition:max-height .26s ease-out;
}
.faq-a .inner{
  padding:0 24px 22px 24px;
  color:var(--text-2);
  font-size:15px;
}
.faq-a .inner a{color:var(--primary);}
.faq-a .inner a:hover{text-decoration:underline;text-underline-offset:4px;}

/* ---------- CTA 条 ---------- */
.cta-band{
  position:relative;
  padding:44px;
  border-radius:var(--radius-xl);
  border:1px solid var(--card-line);
  background:linear-gradient(135deg,rgba(43,108,255,.10),rgba(255,255,255,.03));
  box-shadow:var(--shadow-1);
  overflow:hidden;
}
.cta-band::after{
  content:"";
  position:absolute;
  width:520px;height:520px;
  right:-160px;top:-220px;
  background:radial-gradient(circle,rgba(43,108,255,.28) 0%,rgba(43,108,255,0) 68%);
  pointer-events:none;
}
.cta-grid{
  position:relative;
  z-index:2;
  display:grid;
  grid-template-columns:minmax(0,1.05fr) minmax(0,.95fr);
  gap:36px;
  align-items:start;
}
.cta-band h2{font-size:28px;font-weight:650;letter-spacing:-.4px;}
.cta-band .cta-desc{color:var(--text-2);margin-top:12px;font-size:15.5px;}
.cta-points{margin-top:20px;display:grid;gap:10px;}
.cta-points li{
  display:flex;
  align-items:flex-start;
  gap:10px;
  font-size:14.5px;
  color:var(--text-2);
}
.cta-points li i{
  flex:0 0 auto;
  width:18px;height:18px;
  margin-top:4px;
  border-radius:6px;
  background:var(--accent-soft);
  color:var(--accent);
  font-style:normal;
  font-size:12px;
  display:flex;align-items:center;justify-content:center;
}
.form-card{
  padding:26px;
  border-radius:var(--radius-l);
  border:1px solid var(--card-line);
  background:rgba(6,10,22,.62);
  backdrop-filter:blur(18px);
  -webkit-backdrop-filter:blur(18px);
}
.field{margin-bottom:16px;}
.field label{
  display:block;
  font-size:13.5px;
  color:var(--text-2);
  margin-bottom:8px;
  letter-spacing:.2px;
}
.field input,
.field select,
.field textarea{
  width:100%;
  padding:12px 14px;
  border-radius:var(--radius-s);
  border:1px solid var(--card-line);
  background:rgba(3,6,14,.7);
  color:var(--text);
  font-size:15px;
  transition:border-color .16s ease,box-shadow .16s ease;
}
.field textarea{min-height:88px;resize:vertical;}
.field input::placeholder,
.field textarea::placeholder{color:var(--text-3);}
.field input:focus,
.field select:focus,
.field textarea:focus{
  outline:none;
  border-color:var(--primary);
  box-shadow:0 0 0 4px rgba(43,108,255,.14);
}
.field select{appearance:none;background-image:linear-gradient(45deg,transparent 50%,var(--text-3) 50%),linear-gradient(135deg,var(--text-3) 50%,transparent 50%);background-position:calc(100% - 20px) 50%,calc(100% - 14px) 50%;background-size:6px 6px,6px 6px;background-repeat:no-repeat;}
.form-tip{
  margin-top:14px;
  font-size:12.5px;
  color:var(--text-3);
  line-height:1.7;
}
.form-msg{
  margin-top:12px;
  font-size:13px;
  color:var(--accent);
  display:none;
}
.form-msg.show{display:block;}

/* ---------- 页脚 ---------- */
.site-footer{
  background:#04070F;
  border-top:1px solid var(--line);
  padding:64px 0 0;
  margin-top:0;
}
.footer-grid{
  display:grid;
  grid-template-columns:1.5fr 1fr 1fr 1.1fr;
  gap:36px;
  padding-bottom:44px;
}
.footer-brand p{
  margin-top:18px;
  font-size:14px;
  color:var(--text-3);
  line-height:1.8;
  max-width:360px;
}
.footer-col h4{
  font-size:15px;
  font-weight:600;
  color:var(--text);
  margin-bottom:16px;
}
.footer-col ul{display:grid;gap:10px;}
.footer-col a,
.footer-col .static{
  font-size:14px;
  color:var(--text-3);
}
.footer-col a:hover{color:var(--text-2);}
.footer-bottom{
  display:flex;
  align-items:center;
  justify-content:space-between;
  gap:18px;
  flex-wrap:wrap;
  padding:20px 0 26px;
  border-top:1px solid var(--line);
  font-size:13px;
  color:var(--text-3);
}
.footer-bottom .links{display:flex;gap:18px;flex-wrap:wrap;}
.footer-bottom .links a:hover{color:var(--text-2);}

/* ---------- 动效 ---------- */
.reveal{
  opacity:0;
  transform:translateY(14px);
  transition:opacity .26s ease-out,transform .26s ease-out;
}
.reveal.is-visible{opacity:1;transform:none;}

/* ---------- 响应式 ---------- */
@media (min-width:1440px){
  :root{--container:1320px;}
}
@media (max-width:1199px){
  .nav-links{gap:2px;}
  .nav-link{padding:10px 9px;font-size:13.5px;}
  .nav-search span{display:none;}
  .page-hero h1{font-size:34px;}
}
@media (max-width:1023px){
  .nav-toggle{display:block;}
  .nav-links{
    position:fixed;
    top:0;
    right:0;
    bottom:0;
    width:min(320px,86vw);
    flex-direction:column;
    align-items:stretch;
    justify-content:flex-start;
    gap:6px;
    padding:88px 20px 32px;
    background:rgba(6,10,22,.98);
    backdrop-filter:blur(20px);
    -webkit-backdrop-filter:blur(20px);
    border-left:1px solid var(--line);
    transform:translateX(102%);
    transition:transform .24s ease-out;
    z-index:70;
    overflow-y:auto;
  }
  .nav-links.is-open{transform:translateX(0);}
  .nav-link{
    padding:14px 12px;
    font-size:15.5px;
    border-bottom:1px solid var(--line);
    border-radius:0;
    min-height:48px;
    display:flex;
    align-items:center;
  }
  .nav-link::after{display:none;}
  .nav-link.is-active{color:var(--primary);}
  .layout-main{grid-template-columns:1fr;gap:32px;}
  .side{position:static;top:auto;}
  .cta-grid{grid-template-columns:1fr;}
  .footer-grid{grid-template-columns:1fr 1fr;gap:30px;}
  .hero-metrics{grid-template-columns:repeat(2,1fr);}
}
@media (max-width:767px){
  :root{--section-y:48px;}
  .container{padding:0 16px;}
  .topbar-mid{display:none;}
  .topbar .container{justify-content:space-between;}
  .page-hero{padding:52px 0 44px;}
  .page-hero h1{font-size:26px;}
  .hero-lead{font-size:15px;}
  .hero-metrics{grid-template-columns:1fr 1fr;gap:12px;margin-top:26px;}
  .metric{padding:14px 16px;}
  .metric .num{font-size:22px;}
  .section{padding:48px 0;}
  .sec-title{font-size:22px;}
  .chapter h2{font-size:21px;}
  .chapter-num{font-size:26px;}
  .anchor-bar{top:68px;}
  .flow{grid-template-columns:1fr;}
  .flow-step::after{display:none;}
  .media-card{grid-template-columns:1fr;}
  .check-grid{grid-template-columns:1fr;}
  .cta-band{padding:26px 20px;}
  .cta-band h2{font-size:22px;}
  .form-card{padding:20px;}
  .btn{width:100%;}
  .btn.btn-sm{width:auto;}
  .footer-grid{grid-template-columns:1fr;gap:26px;}
  .footer-bottom{flex-direction:column;align-items:flex-start;gap:12px;}
  .brand-name{font-size:14.5px;}
  .breadcrumb{flex-wrap:wrap;}
}
@media (max-width:520px){
  .hero-metrics{grid-template-columns:1fr;}
  .chapter-head{gap:10px;}
  .chapter h2{padding-left:12px;}
  .faq-q{padding:16px 16px;font-size:15px;}
  .faq-a .inner{padding:0 16px 18px;}
}
@media (prefers-reduced-motion:reduce){
  *{animation:none !important;transition:none !important;scroll-behavior:auto !important;}
  .reveal{opacity:1;transform:none;}
}

/* roulang page: category3 */
:root{
  --bg:#060A16;
  --bg-2:#0A1122;
  --bg-3:#04070F;
  --panel:rgba(255,255,255,.045);
  --panel-soft:rgba(255,255,255,.02);
  --primary:#2B6CFF;
  --primary-soft:rgba(43,108,255,.12);
  --primary-text:#8FB3FF;
  --accent:#1FE0A8;
  --accent-soft:rgba(31,224,168,.12);
  --orange:#FF8A3D;
  --warn:#FFC24B;
  --danger:#FF5A76;
  --text:#EAF0FB;
  --text-2:#A6B4CE;
  --text-3:#6C7A97;
  --line:rgba(255,255,255,.08);
  --line-2:rgba(255,255,255,.10);
  --r-card:16px;
  --r-btn:12px;
  --r-img:12px;
  --r-input:10px;
  --sh-card:0 8px 28px rgba(0,0,0,.35);
  --sh-hover:0 16px 44px rgba(0,0,0,.45);
  --sh-btn:0 8px 28px rgba(43,108,255,.45);
  --ease:cubic-bezier(.22,.61,.36,1);
}
*{margin:0;padding:0;box-sizing:border-box}
html{scroll-behavior:smooth}
body{
  background:var(--bg);
  color:var(--text);
  font-family:"Noto Sans SC","PingFang SC","Microsoft YaHei","Helvetica Neue",Arial,sans-serif;
  font-size:16px;
  line-height:1.8;
  -webkit-font-smoothing:antialiased;
  -moz-osx-font-smoothing:grayscale;
  overflow-x:hidden;
}
img{max-width:100%;display:block;border-style:none}
a{color:inherit;text-decoration:none}
button,input,select,textarea{font:inherit;color:inherit;background:none;border:0;outline:none}
ul,ol{list-style:none}
h1,h2,h3,h4{line-height:1.35;font-weight:650;letter-spacing:-.2px}
:focus-visible{outline:2px solid var(--accent);outline-offset:2px;border-radius:6px}
.container{width:100%;max-width:1200px;margin:0 auto;padding:0 24px}
.num{font-variant-numeric:tabular-nums;font-feature-settings:"tnum"}

/* ---------- 按钮 ---------- */
.btn{
  display:inline-flex;align-items:center;justify-content:center;gap:8px;
  height:44px;padding:0 22px;border-radius:var(--r-btn);
  font-size:14px;font-weight:600;cursor:pointer;white-space:nowrap;
  border:1px solid transparent;
  transition:transform .18s var(--ease),box-shadow .18s var(--ease),background .18s var(--ease),color .18s var(--ease),border-color .18s var(--ease);
}
.btn-primary{background:var(--primary);color:#fff;border-color:rgba(43,108,255,.9);box-shadow:var(--sh-btn)}
.btn-primary:hover{transform:translateY(-2px);box-shadow:0 14px 34px rgba(43,108,255,.55);filter:brightness(1.06)}
.btn-primary:active{transform:translateY(1px);box-shadow:0 6px 18px rgba(43,108,255,.35)}
.btn-ghost{background:transparent;border-color:var(--line-2);color:var(--text)}
.btn-ghost:hover{transform:translateY(-2px);background:rgba(43,108,255,.08);border-color:rgba(43,108,255,.45)}
.btn-ghost:active{transform:translateY(1px)}
.btn:disabled{opacity:.45;box-shadow:none;cursor:not-allowed;transform:none}
.btn-sm{height:34px;padding:0 16px;font-size:13px;border-radius:999px}

/* ---------- 文字链 ---------- */
.link-arrow{display:inline-flex;align-items:center;gap:6px;color:var(--primary-text);font-size:14px;font-weight:600}
.link-arrow svg{transition:transform .16s var(--ease)}
.link-arrow:hover{color:var(--primary);text-decoration:underline}
.link-arrow:hover svg{transform:translateX(3px)}

/* ---------- 徽章 ---------- */
.badge{
  display:inline-flex;align-items:center;gap:6px;height:24px;padding:0 10px;
  border-radius:6px;font-size:12px;font-weight:600;
  background:var(--primary-soft);color:var(--primary-text);border:1px solid rgba(43,108,255,.28);
}
.badge-accent{background:var(--accent-soft);color:var(--accent);border-color:rgba(31,224,168,.3)}
.badge-warn{background:rgba(255,194,75,.12);color:var(--warn);border-color:rgba(255,194,75,.32)}

/* ---------- 顶部导航 ---------- */
.site-header{
  position:sticky;top:0;z-index:60;
  background:rgba(6,10,22,.86);
  backdrop-filter:blur(14px);
  -webkit-backdrop-filter:blur(14px);
  border-bottom:1px solid var(--line);
}
.navbar{display:flex;align-items:center;gap:20px;height:68px}
.brand{display:flex;align-items:center;gap:12px;flex:0 0 auto}
.brand-mark{
  width:36px;height:36px;display:grid;place-items:center;
  border-radius:10px;color:#fff;font-weight:700;font-size:16px;
  background:linear-gradient(140deg,var(--primary),#17389B);
  clip-path:polygon(0 0,100% 0,100% 72%,72% 100%,0 100%);
  flex:0 0 auto;
}
.brand-text{display:flex;flex-direction:column;line-height:1.15}
.brand-name{font-size:15px;font-weight:700;letter-spacing:-.2px;white-space:nowrap}
.brand-sub{font-size:10px;letter-spacing:.16em;color:var(--text-3)}
.nav-links{display:flex;align-items:center;gap:2px;margin-left:auto}
.nav-link{
  position:relative;padding:10px 12px;font-size:14px;color:var(--text-2);
  border-radius:8px;transition:color .16s var(--ease),background .16s var(--ease);
}
.nav-link::after{
  content:"";position:absolute;left:12px;right:12px;bottom:2px;height:2px;
  background:var(--primary);transform:scaleX(0);transform-origin:left;
  transition:transform .16s var(--ease);
}
.nav-link:hover{color:var(--text)}
.nav-link:hover::after{transform:scaleX(1)}
.nav-link.is-active{color:var(--text)}
.nav-link.is-active::after{transform:scaleX(1)}
.nav-right{display:flex;align-items:center;gap:10px;flex:0 0 auto}
.nav-search{
  display:inline-flex;align-items:center;gap:6px;font-size:13px;color:var(--text-2);
  padding:8px 14px;border:1px solid var(--line-2);border-radius:999px;
  transition:color .16s var(--ease),border-color .16s var(--ease),background .16s var(--ease);
}
.nav-search:hover{color:var(--text);border-color:rgba(43,108,255,.5);background:rgba(43,108,255,.08)}
.nav-cta{height:38px;padding:0 18px;border-radius:999px;font-size:13px}
.nav-toggle{
  display:none;width:44px;height:44px;border-radius:10px;
  border:1px solid var(--line-2);background:var(--panel);
  align-items:center;justify-content:center;cursor:pointer;
}
.nav-toggle span{position:relative;display:block;width:18px;height:2px;border-radius:2px;background:var(--text)}
.nav-toggle span::before,.nav-toggle span::after{
  content:"";position:absolute;left:0;width:18px;height:2px;border-radius:2px;background:var(--text);
  transition:transform .2s var(--ease);
}
.nav-toggle span::before{top:-6px}
.nav-toggle span::after{top:6px}
.nav-toggle[aria-expanded="true"] span{background:transparent}
.nav-toggle[aria-expanded="true"] span::before{transform:translateY(6px) rotate(45deg)}
.nav-toggle[aria-expanded="true"] span::after{transform:translateY(-6px) rotate(-45deg)}
.nav-mask{
  position:fixed;inset:0;background:rgba(3,6,14,.6);backdrop-filter:blur(2px);
  opacity:0;pointer-events:none;transition:opacity .24s var(--ease);z-index:65;
}
.nav-mask.is-open{opacity:1;pointer-events:auto}

/* ---------- 页面首屏 ---------- */
.page-hero{
  position:relative;overflow:hidden;
  padding:64px 0 72px;
  background:linear-gradient(180deg,#080D1C 0%,#060A16 100%);
  border-bottom:1px solid var(--line);
}
.page-hero::before{
  content:"";position:absolute;inset:-10% -10% 0;
  background-image:
    linear-gradient(rgba(255,255,255,.055) 1px,transparent 1px),
    linear-gradient(90deg,rgba(255,255,255,.055) 1px,transparent 1px),
    repeating-linear-gradient(45deg,rgba(43,108,255,.05) 0 1px,transparent 1px 42px);
  background-size:56px 56px,56px 56px,auto;
  -webkit-mask-image:radial-gradient(120% 90% at 22% 10%,#000 0%,transparent 78%);
  mask-image:radial-gradient(120% 90% at 22% 10%,#000 0%,transparent 78%);
  pointer-events:none;
}
.hero-inner{position:relative;z-index:1;display:grid;grid-template-columns:1.15fr .85fr;gap:52px;align-items:center}
.breadcrumb{display:flex;flex-wrap:wrap;align-items:center;gap:8px;font-size:13px;color:var(--text-3);margin-bottom:20px}
.breadcrumb a{color:var(--text-2);transition:color .16s var(--ease)}
.breadcrumb a:hover{color:var(--primary-text)}
.breadcrumb span.sep{color:rgba(255,255,255,.22)}
.page-hero h1{font-size:44px;font-weight:700;letter-spacing:-.5px;margin:16px 0 16px}
.lead{font-size:16px;color:var(--text-2);max-width:560px}
.hero-actions{display:flex;flex-wrap:wrap;gap:14px;margin-top:28px}
.hero-points{display:flex;flex-wrap:wrap;margin-top:34px}
.hero-points li{
  display:flex;align-items:center;gap:8px;font-size:13px;color:var(--text-2);
  padding:0 18px;border-left:1px solid var(--line);
}
.hero-points li:first-child{border-left:0;padding-left:0}
.hero-points svg{color:var(--accent);flex:0 0 auto}
.hero-visual{position:relative}
.visual-card{
  position:relative;border-radius:20px;overflow:hidden;
  border:1px solid var(--line-2);background:var(--panel);
  backdrop-filter:blur(18px);-webkit-backdrop-filter:blur(18px);
  box-shadow:var(--sh-hover);
}
.visual-card img{width:100%;height:320px;object-fit:cover}
.visual-meta{
  position:absolute;left:0;right:0;bottom:0;padding:20px 22px;
  display:flex;gap:16px;flex-wrap:wrap;align-items:center;
  background:linear-gradient(180deg,rgba(6,10,22,0),rgba(6,10,22,.94));
}
.visual-meta strong{font-size:15px;font-weight:600;display:block}
.visual-meta small{font-size:12px;color:var(--text-3)}
.visual-float{
  position:absolute;top:-18px;right:-12px;padding:14px 18px;border-radius:14px;
  background:rgba(10,17,34,.92);border:1px solid rgba(31,224,168,.34);
  box-shadow:0 14px 34px rgba(0,0,0,.45);backdrop-filter:blur(10px);
}
.visual-float b{display:block;font-size:22px;color:var(--accent);font-variant-numeric:tabular-nums;line-height:1.2}
.visual-float small{font-size:12px;color:var(--text-3)}

/* ---------- 板块 ---------- */
.section{padding:96px 0;position:relative}
.section-alt{background:var(--bg-2);border-top:1px solid var(--line);border-bottom:1px solid var(--line)}
.section-head{display:flex;align-items:flex-end;justify-content:space-between;gap:28px;margin-bottom:46px;flex-wrap:wrap}
.sec-title{position:relative;padding-left:18px}
.sec-title::before{
  content:"";position:absolute;left:0;top:8px;bottom:8px;width:3px;border-radius:2px;
  background:linear-gradient(180deg,var(--primary),var(--accent));
}
.sec-num{display:block;font-size:13px;font-weight:700;letter-spacing:.16em;color:var(--accent);margin-bottom:8px}
.sec-title h2{font-size:30px;font-weight:650;letter-spacing:-.3px}
.sec-desc{margin-top:12px;font-size:15px;color:var(--text-2);max-width:680px}

/* ---------- 时间轴 ---------- */
.timeline{position:relative}
.timeline::before{
  content:"";position:absolute;left:21px;top:18px;bottom:18px;width:2px;
  background:linear-gradient(180deg,rgba(31,224,168,.85),rgba(43,108,255,.5),rgba(255,255,255,.05));
}
.tl-item{position:relative;padding-left:72px;margin-bottom:20px}
.tl-item:last-child{margin-bottom:0}
.tl-dot{
  position:absolute;left:10px;top:28px;width:24px;height:24px;border-radius:50%;
  background:#08101F;border:2px solid var(--accent);
  box-shadow:0 0 0 6px rgba(31,224,168,.10);
  display:grid;place-items:center;font-size:10px;font-weight:700;color:var(--accent);
  font-variant-numeric:tabular-nums;
}
.tl-card{
  position:relative;display:flex;gap:20px;align-items:flex-start;
  padding:26px 28px;border-radius:var(--r-card);
  background:var(--panel);border:1px solid var(--line-2);
  box-shadow:var(--sh-card);backdrop-filter:blur(18px);-webkit-backdrop-filter:blur(18px);
  transition:transform .2s var(--ease),border-color .2s var(--ease),box-shadow .2s var(--ease);
}
.tl-card::after{
  content:"";position:absolute;top:0;right:0;width:16px;height:16px;
  border-top-right-radius:var(--r-card);
  background:linear-gradient(225deg,rgba(255,255,255,.14),transparent 72%);
  pointer-events:none;
}
.tl-card:hover{transform:translateY(-4px);border-color:rgba(43,108,255,.32);box-shadow:var(--sh-hover)}
.tl-icon{
  width:44px;height:44px;flex:0 0 auto;border-radius:12px;display:grid;place-items:center;
  background:var(--primary-soft);border:1px solid rgba(43,108,255,.26);color:var(--primary-text);
}
.tl-card h3{font-size:19px;font-weight:600;margin-bottom:8px}
.tl-card p{font-size:15px;color:var(--text-2)}
.tl-card .link-arrow{margin-top:12px}

/* ---------- 风险场景 ---------- */
.risk-list{border-top:1px solid var(--line)}
.risk-item{
  display:grid;grid-template-columns:1fr 1fr;gap:32px;padding:26px 4px;
  border-bottom:1px solid var(--line);transition:background .18s var(--ease);
}
.risk-item:hover{background:rgba(255,255,255,.02)}
.risk-scene h3{font-size:17px;font-weight:600;display:flex;align-items:center;gap:10px;flex-wrap:wrap}
.risk-scene p{margin-top:8px;font-size:14px;color:var(--text-3)}
.risk-act{display:flex;gap:12px;align-items:flex-start;font-size:15px;color:var(--text-2)}
.risk-act svg{flex:0 0 auto;margin-top:5px;color:var(--accent)}

/* ---------- 自检清单 ---------- */
.check-wrap{display:grid;grid-template-columns:1.45fr .55fr;gap:28px;align-items:start}
.check-list{display:grid;grid-template-columns:1fr 1fr;gap:12px}
.check-item{
  display:flex;gap:12px;align-items:flex-start;width:100%;text-align:left;cursor:pointer;
  padding:16px 18px;border-radius:12px;
  background:var(--panel);border:1px solid var(--line-2);
  transition:transform .18s var(--ease),border-color .18s var(--ease),background .18s var(--ease);
}
.check-item:hover{transform:translateY(-2px);border-color:rgba(43,108,255,.4)}
.check-box{
  width:20px;height:20px;flex:0 0 auto;margin-top:3px;border-radius:6px;
  border:1.5px solid rgba(255,255,255,.24);display:grid;place-items:center;
  color:transparent;transition:background .18s var(--ease),border-color .18s var(--ease),color .18s var(--ease);
}
.check-item .txt{font-size:15px;color:var(--text)}
.check-item.is-done{border-color:rgba(31,224,168,.34);background:rgba(31,224,168,.06)}
.check-item.is-done .check-box{background:var(--accent);border-color:var(--accent);color:#04120D}
.check-item.is-done .txt{color:var(--text-2)}
.progress-card{
  position:sticky;top:96px;padding:28px;border-radius:var(--r-card);
  background:var(--panel);border:1px solid var(--line-2);
  box-shadow:var(--sh-card);backdrop-filter:blur(18px);-webkit-backdrop-filter:blur(18px);
}
.progress-card h3{font-size:16px;font-weight:600;color:var(--text-2)}
.progress-num{font-size:40px;font-weight:700;letter-spacing:-1px;margin-top:10px;font-variant-numeric:tabular-nums}
.progress-num small{font-size:16px;color:var(--text-3);font-weight:500;margin-left:4px}
.progress-bar{height:8px;border-radius:999px;background:rgba(255,255,255,.08);overflow:hidden;margin:16px 0 14px}
.progress-bar i{display:block;height:100%;width:0;border-radius:999px;background:linear-gradient(90deg,var(--primary),var(--accent));transition:width .3s var(--ease)}
.progress-tip{font-size:13px;color:var(--text-3);line-height:1.7}

/* ---------- FAQ ---------- */
.faq{display:grid;gap:12px}
.faq-item{
  position:relative;border-radius:14px;overflow:hidden;
  background:var(--panel);border:1px solid var(--line-2);
  transition:border-color .18s var(--ease),background .18s var(--ease);
}
.faq-item::before{
  content:"";position:absolute;left:0;top:0;bottom:0;width:3px;background:var(--primary);
  transform:scaleY(0);transform-origin:top;transition:transform .22s var(--ease);
}
.faq-item.is-open{border-color:rgba(43,108,255,.38);background:rgba(43,108,255,.05)}
.faq-item.is-open::before{transform:scaleY(1)}
.faq-q{
  width:100%;display:flex;align-items:center;justify-content:space-between;gap:18px;
  padding:20px 22px;text-align:left;cursor:pointer;font-size:16px;font-weight:600;color:var(--text);
}
.faq-icon{position:relative;width:22px;height:22px;flex:0 0 auto}
.faq-icon::before,.faq-icon::after{
  content:"";position:absolute;left:50%;top:50%;width:12px;height:2px;border-radius:2px;
  background:var(--text-2);transform:translate(-50%,-50%);
  transition:transform .22s var(--ease),background .22s var(--ease);
}
.faq-icon::after{transform:translate(-50%,-50%) rotate(90deg)}
.faq-item.is-open .faq-icon::before{background:var(--primary);transform:translate(-50%,-50%) rotate(180deg)}
.faq-item.is-open .faq-icon::after{background:var(--primary);transform:translate(-50%,-50%) rotate(180deg)}
.faq-a{max-height:0;overflow:hidden;transition:max-height .28s var(--ease)}
.faq-a p{padding:0 22px 22px;font-size:15px;color:var(--text-2);line-height:1.85}
.faq-item.is-open .faq-a{max-height:420px}

/* ---------- 提醒卡 ---------- */
.warn-card{
  display:flex;gap:18px;align-items:flex-start;
  padding:28px;border-radius:var(--r-card);
  background:rgba(255,194,75,.06);
  border:1px solid rgba(255,194,75,.42);
  box-shadow:0 8px 28px rgba(0,0,0,.28);
}
.warn-card svg{flex:0 0 auto;color:var(--warn);margin-top:3px}
.warn-card h3{font-size:17px;font-weight:600;color:var(--warn);margin-bottom:8px}
.warn-card p{font-size:15px;color:var(--text-2)}

/* ---------- CTA ---------- */
.cta-band{
  position:relative;overflow:hidden;border-radius:20px;
  padding:48px;display:grid;grid-template-columns:1.25fr .75fr;gap:36px;align-items:center;
  background:var(--panel);border:1px solid var(--line-2);box-shadow:var(--sh-card);
  backdrop-filter:blur(18px);-webkit-backdrop-filter:blur(18px);
}
.cta-band::after{
  content:"";position:absolute;inset:0;pointer-events:none;
  background:radial-gradient(620px 300px at 10% 0%,rgba(43,108,255,.22),transparent 72%);
}
.cta-band > *{position:relative;z-index:1}
.cta-band h2{font-size:28px;font-weight:650;margin-bottom:12px}
.cta-band p{font-size:15px;color:var(--text-2);max-width:560px}
.cta-points{display:grid;gap:10px;margin-top:22px}
.cta-points li{display:flex;align-items:center;gap:10px;font-size:14px;color:var(--text-2)}
.cta-points svg{color:var(--accent);flex:0 0 auto}
.cta-actions{display:flex;flex-direction:column;gap:14px}
.cta-note{font-size:13px;color:var(--text-3);line-height:1.7}

/* ---------- 页脚 ---------- */
.site-footer{background:var(--bg-3);border-top:1px solid var(--line);padding:64px 0 0}
.footer-grid{display:grid;grid-template-columns:1.6fr 1fr 1fr 1.1fr;gap:40px;padding-bottom:44px}
.footer-brand p{margin-top:16px;font-size:14px;color:var(--text-3);max-width:340px;line-height:1.8}
.footer-col h4{font-size:14px;font-weight:600;color:var(--text);margin-bottom:16px}
.footer-col ul{display:grid;gap:10px}
.footer-col a{font-size:14px;color:var(--text-2);transition:color .16s var(--ease)}
.footer-col a:hover{color:var(--primary-text)}
.footer-col .static{font-size:14px;color:var(--text-3)}
.footer-bottom{
  border-top:1px solid var(--line);padding:20px 0 28px;
  display:flex;justify-content:space-between;align-items:center;gap:16px;flex-wrap:wrap;
  font-size:13px;color:var(--text-3);
}
.footer-bottom .links{display:flex;gap:18px;flex-wrap:wrap}
.footer-bottom a{transition:color .16s var(--ease)}
.footer-bottom a:hover{color:var(--primary-text)}

/* ---------- 响应式 ---------- */
@media (max-width:1279px){
  .container{max-width:1140px}
}
@media (max-width:1023px){
  .nav-links{
    position:fixed;top:68px;right:0;width:288px;height:calc(100vh - 68px);
    flex-direction:column;align-items:stretch;gap:4px;margin-left:0;
    padding:20px;background:#070C18;border-left:1px solid var(--line);
    transform:translateX(100%);opacity:0;pointer-events:none;
    transition:transform .24s var(--ease),opacity .24s var(--ease);
    overflow-y:auto;z-index:70;
  }
  .nav-links.is-open{transform:translateX(0);opacity:1;pointer-events:auto}
  .nav-link{padding:14px 12px;font-size:15px;border-radius:10px}
  .nav-link::after{display:none}
  .nav-link.is-active{background:rgba(43,108,255,.12);color:var(--text)}
  .nav-toggle{display:inline-flex}
  .hero-inner{grid-template-columns:1fr;gap:40px}
  .visual-float{right:12px;top:-14px}
  .check-wrap{grid-template-columns:1fr}
  .progress-card{position:static}
  .cta-band{grid-template-columns:1fr;padding:40px}
  .footer-grid{grid-template-columns:1fr 1fr;gap:32px}
  .section{padding:64px 0}
  .page-hero h1{font-size:32px}
  .sec-title h2{font-size:26px}
}
@media (max-width:767px){
  .container{padding:0 16px}
  .navbar{height:62px;gap:12px}
  .brand-sub{display:none}
  .brand-name{font-size:14px}
  .brand-mark{width:32px;height:32px;font-size:14px}
  .nav-links{top:62px;width:100%;max-width:320px;height:calc(100vh - 62px)}
  .nav-search{display:none}
  .nav-cta{height:36px;padding:0 14px;font-size:12px}
  .page-hero{padding:40px 0 48px}
  .page-hero h1{font-size:26px;letter-spacing:-.3px}
  .lead{font-size:15px}
  .hero-actions .btn{width:100%}
  .hero-points{flex-direction:column;gap:12px}
  .hero-points li{padding:0;border-left:0}
  .visual-card img{height:220px}
  .visual-float{position:static;display:inline-flex;gap:10px;align-items:center;margin-bottom:14px}
  .visual-float b{font-size:18px}
  .section{padding:48px 0}
  .section-head{margin-bottom:32px}
  .sec-title h2{font-size:22px}
  .sec-desc{font-size:14px}
  .tl-item{padding-left:56px}
  .timeline::before{left:15px}
  .tl-dot{left:4px;width:20px;height:20px;top:24px}
  .tl-card{padding:20px;flex-direction:column;gap:14px}
  .tl-card h3{font-size:17px}
  .tl-card p{font-size:14px}
  .risk-item{grid-template-columns:1fr;gap:14px;padding:22px 2px}
  .check-list{grid-template-columns:1fr}
  .faq-q{font-size:15px;padding:18px}
  .faq-a p{padding:0 18px 18px;font-size:14px}
  .warn-card{padding:22px;flex-direction:column}
  .cta-band{padding:28px 22px;border-radius:16px}
  .cta-band h2{font-size:22px}
  .cta-actions .btn{width:100%}
  .footer-grid{grid-template-columns:1fr;gap:28px;padding-bottom:32px}
  .footer-bottom{flex-direction:column;align-items:flex-start}
  .progress-num{font-size:34px}
}
@media (max-width:520px){
  .brand-name{font-size:13px;max-width:128px;overflow:hidden;text-overflow:ellipsis;white-space:nowrap}
  .nav-right{gap:8px}
  .nav-cta{padding:0 12px;font-size:12px}
  .hero-points li{font-size:12.5px}
  .sec-num{font-size:12px}
}
@media (prefers-reduced-motion:reduce){
  *{animation:none !important;transition:none !important;scroll-behavior:auto !important}
}

/* roulang page: category4 */
:root{
  --bg:#060A16;
  --bg-2:#0A1122;
  --bg-3:#050810;
  --glass:rgba(255,255,255,0.045);
  --glass-2:rgba(255,255,255,0.07);
  --primary:#2B6CFF;
  --primary-soft:rgba(43,108,255,0.12);
  --accent:#1FE0A8;
  --accent-soft:rgba(31,224,168,0.12);
  --warn:#FFC24B;
  --danger:#FF5A76;
  --orange:#FF8A3D;
  --text:#EAF0FB;
  --text-2:#A6B4CE;
  --text-3:#6C7A97;
  --line:rgba(255,255,255,0.08);
  --card-line:rgba(255,255,255,0.10);
  --highlight:rgba(255,255,255,0.18);
  --radius:16px;
  --radius-sm:12px;
  --radius-lg:20px;
  --shadow-sm:0 8px 28px rgba(0,0,0,0.35);
  --shadow-lg:0 16px 44px rgba(0,0,0,0.45);
  --glow:0 8px 28px rgba(43,108,255,0.45);
  --container:1200px;
  --mono:"SFMono-Regular",Consolas,"Liberation Mono",Menlo,monospace;
}
*,*::before,*::after{box-sizing:border-box}
html{-webkit-text-size-adjust:100%;scroll-behavior:smooth}
body{
  margin:0;
  background:var(--bg);
  color:var(--text);
  font-family:"Inter","Noto Sans SC","PingFang SC","Hiragino Sans GB","Microsoft YaHei",system-ui,-apple-system,sans-serif;
  font-size:16px;
  line-height:1.8;
  -webkit-font-smoothing:antialiased;
}
img{max-width:100%;display:block;border-radius:var(--radius-sm)}
a{color:inherit;text-decoration:none}
button,input,select,textarea{font:inherit;color:inherit}
h1,h2,h3,h4{margin:0;line-height:1.35;letter-spacing:-0.2px}
p{margin:0 0 .9em}
p:last-child{margin-bottom:0}
ul{margin:0;padding:0;list-style:none}
::selection{background:rgba(43,108,255,.35);color:#fff}
:focus-visible{outline:2px solid var(--accent);outline-offset:2px}

.container{width:100%;max-width:var(--container);margin:0 auto;padding:0 24px}
@media (min-width:1440px){:root{--container:1320px}}

/* ================= 顶部信息条 ================= */
.site-topbar{height:36px;background:var(--bg-3);border-bottom:1px solid var(--line);font-size:12px;color:var(--text-3)}
.site-topbar .container{height:100%;display:flex;align-items:center;justify-content:space-between;gap:16px}
.topbar-left{color:var(--text-2);white-space:nowrap;overflow:hidden;text-overflow:ellipsis}
.topbar-mid{flex:1;text-align:center;white-space:nowrap;overflow:hidden;text-overflow:ellipsis;color:var(--text-3)}
.topbar-right{display:flex;align-items:center;gap:10px;white-space:nowrap}
.topbar-right a{color:var(--text-2);transition:color .16s ease-out}
.topbar-right a:hover{color:var(--text)}
.topbar-pill{height:22px;padding:0 10px;border-radius:999px;background:var(--primary);color:#fff;display:inline-flex;align-items:center;font-size:12px;line-height:1;transition:transform .16s ease-out,box-shadow .16s ease-out}
.topbar-pill:hover{transform:translateY(-1px);box-shadow:var(--glow)}

/* ================= 导航 ================= */
.site-header{
  position:sticky;top:0;z-index:70;
  background:rgba(6,10,22,0.82);
  backdrop-filter:blur(18px);
  -webkit-backdrop-filter:blur(18px);
  border-bottom:1px solid transparent;
  transition:background .22s ease-out,border-color .22s ease-out,box-shadow .22s ease-out;
}
.site-header.is-scrolled{background:rgba(5,8,16,0.94);border-bottom-color:var(--line);box-shadow:0 10px 30px rgba(0,0,0,.35)}
.navbar{height:68px;display:flex;align-items:center;justify-content:space-between;gap:20px}
.brand{display:flex;align-items:center;gap:12px;min-height:28px}
.brand-mark{
  width:34px;height:34px;flex:0 0 34px;
  display:flex;align-items:center;justify-content:center;
  font-weight:700;font-size:18px;color:#fff;
  background:linear-gradient(140deg,var(--primary),#1548B8);
  clip-path:polygon(0 0,100% 0,100% 76%,76% 100%,0 100%);
  box-shadow:0 6px 18px rgba(43,108,255,.4);
}
.brand-text{display:flex;flex-direction:column;min-height:28px;justify-content:center}
.brand-name{font-size:16px;font-weight:700;line-height:1.2;letter-spacing:0}
.brand-sub{font-size:10px;letter-spacing:1.4px;color:var(--text-3);line-height:1.4;text-transform:uppercase}
.nav-links{display:flex;align-items:center;gap:6px}
.nav-link{
  position:relative;padding:8px 12px;font-size:15px;color:var(--text-2);
  border-radius:8px;transition:color .16s ease-out;
}
.nav-link::after{
  content:"";position:absolute;left:12px;right:12px;bottom:2px;height:2px;
  background:var(--primary);border-radius:2px;transform:scaleX(0);transform-origin:left;
  transition:transform .18s ease-out;
}
.nav-link:hover{color:var(--text)}
.nav-link:hover::after{transform:scaleX(1)}
.nav-link.is-active{color:var(--text);font-weight:600}
.nav-link.is-active::after{transform:scaleX(1)}
.nav-right{display:flex;align-items:center;gap:12px}
.nav-search{
  display:inline-flex;align-items:center;gap:6px;height:36px;padding:0 12px;
  border:1px solid var(--card-line);border-radius:10px;font-size:13px;color:var(--text-2);
  background:var(--glass);transition:border-color .16s ease-out,color .16s ease-out,background .16s ease-out;
}
.nav-search:hover{border-color:rgba(43,108,255,.5);color:var(--text);background:var(--glass-2)}
.nav-toggle{
  display:none;width:44px;height:44px;border:1px solid var(--card-line);border-radius:10px;
  background:var(--glass);align-items:center;justify-content:center;cursor:pointer;
}
.nav-toggle span,.nav-toggle span::before,.nav-toggle span::after{
  display:block;width:18px;height:2px;background:var(--text);border-radius:2px;position:relative;transition:transform .2s ease-out
}
.nav-toggle span::before{content:"";position:absolute;top:-6px;left:0}
.nav-toggle span::after{content:"";position:absolute;top:6px;left:0}
.nav-toggle[aria-expanded="true"] span{background:transparent}
.nav-toggle[aria-expanded="true"] span::before{transform:translateY(6px) rotate(45deg)}
.nav-toggle[aria-expanded="true"] span::after{transform:translateY(-6px) rotate(-45deg)}
.nav-mask{
  position:fixed;inset:0;background:rgba(3,6,14,.66);backdrop-filter:blur(2px);
  opacity:0;visibility:hidden;transition:opacity .2s ease-out,visibility .2s ease-out;z-index:60
}
.nav-mask.is-open{opacity:1;visibility:visible}

/* ================= 按钮 ================= */
.btn{
  display:inline-flex;align-items:center;justify-content:center;gap:8px;
  height:44px;padding:0 20px;border-radius:var(--radius-sm);border:1px solid transparent;
  font-size:15px;font-weight:600;cursor:pointer;
  transition:transform .16s ease-out,box-shadow .16s ease-out,filter .16s ease-out,background .16s ease-out,border-color .16s ease-out;
}
.btn-primary{background:var(--primary);color:#fff;box-shadow:var(--glow);border-color:rgba(43,108,255,.9)}
.btn-primary:hover{transform:translateY(-2px);box-shadow:0 14px 36px rgba(43,108,255,.55);filter:brightness(1.06)}
.btn-primary:active{transform:translateY(-1px);box-shadow:0 6px 18px rgba(43,108,255,.35)}
.btn-ghost{background:transparent;color:var(--text);border-color:var(--card-line)}
.btn-ghost:hover{background:var(--primary-soft);border-color:rgba(43,108,255,.55);transform:translateY(-2px)}
.btn:disabled{opacity:.45;box-shadow:none;cursor:not-allowed;transform:none}
.nav-cta{height:38px;padding:0 18px;font-size:14px;border-radius:999px}
.btn-block{width:100%}

/* ================= 通用板块 ================= */
.section{padding:96px 0}
.section.alt{background:var(--bg-2);border-top:1px solid var(--line);border-bottom:1px solid var(--line)}
.sec-head{display:flex;align-items:flex-end;justify-content:space-between;gap:24px;margin-bottom:36px;flex-wrap:wrap}
.sec-title{position:relative;padding-left:16px}
.sec-title::before{content:"";position:absolute;left:0;top:6px;bottom:6px;width:3px;border-radius:3px;background:linear-gradient(180deg,var(--primary),var(--accent))}
.sec-num{display:block;font-family:var(--mono);font-size:13px;letter-spacing:2px;color:var(--accent);margin-bottom:4px}
.sec-title h2{font-size:30px;font-weight:650}
.sec-desc{color:var(--text-2);font-size:15px;max-width:640px;margin-top:10px}
.text-link{
  display:inline-flex;align-items:center;gap:6px;color:var(--primary);font-size:14px;font-weight:600;
  transition:color .16s ease-out;
}
.text-link .arrow{transition:transform .16s ease-out}
.text-link:hover{text-decoration:underline;text-underline-offset:4px}
.text-link:hover .arrow{transform:translateX(3px)}
.badge{
  display:inline-flex;align-items:center;height:24px;padding:0 10px;border-radius:6px;
  background:var(--primary-soft);color:#8FB4FF;font-size:12px;font-weight:600;letter-spacing:.2px
}
.badge-accent{background:var(--accent-soft);color:var(--accent)}

/* ================= 面包屑 ================= */
.crumb{padding:20px 0 0;font-size:13px;color:var(--text-3)}
.crumb ol{display:flex;flex-wrap:wrap;align-items:center;gap:8px;list-style:none;margin:0;padding:0}
.crumb li::after{content:"/";margin-left:8px;color:rgba(255,255,255,.2)}
.crumb li:last-child::after{content:""}
.crumb a{color:var(--text-2);transition:color .16s ease-out}
.crumb a:hover{color:var(--primary)}
.crumb .current{color:var(--text)}

/* ================= Hero ================= */
.page-hero{
  position:relative;margin-top:20px;padding:64px 0 72px;overflow:hidden;
  background-image:linear-gradient(180deg,rgba(6,10,22,.88),rgba(6,10,22,.96)),url('/assets/images/backpic/back-2.webp');
  background-size:cover;background-position:center;
  border-bottom:1px solid var(--line);
}
.page-hero::before{
  content:"";position:absolute;inset:0;pointer-events:none;
  background-image:repeating-linear-gradient(115deg,rgba(255,255,255,.055) 0 1px,transparent 1px 76px);
  opacity:.6;
}
.page-hero .container{position:relative;z-index:1;text-align:center}
.hero-tag{
  display:inline-flex;align-items:center;gap:8px;height:28px;padding:0 14px;border-radius:999px;
  background:var(--glass);border:1px solid var(--card-line);font-size:13px;color:var(--text-2);margin-bottom:20px
}
.hero-tag .dot{width:6px;height:6px;border-radius:50%;background:var(--accent);box-shadow:0 0 10px var(--accent)}
.page-hero h1{font-size:44px;font-weight:700;letter-spacing:-0.5px;margin-bottom:16px}
.page-hero h1 em{font-style:normal;color:var(--primary)}
.hero-lead{color:var(--text-2);font-size:16px;max-width:720px;margin:0 auto 28px}

/* 搜索框 */
.search-box{
  display:flex;align-items:center;gap:8px;width:100%;max-width:640px;margin:0 auto;
  padding:8px;border-radius:16px;border:1px solid var(--card-line);
  background:var(--glass);backdrop-filter:blur(18px);-webkit-backdrop-filter:blur(18px);
  box-shadow:var(--shadow-sm);
}
.search-box input{
  flex:1;height:48px;padding:0 16px;border:none;background:transparent;color:var(--text);font-size:15px;outline:none;
}
.search-box input::placeholder{color:var(--text-3)}
.search-box .btn{height:48px;border-radius:12px;padding:0 22px;white-space:nowrap}
.search-hint{margin-top:14px;font-size:13px;color:var(--text-3)}
.search-hint b{color:var(--text-2);font-weight:600}

/* ================= 自助入口卡片 ================= */
.entry-grid{display:grid;grid-template-columns:repeat(4,1fr);gap:24px}
.entry-card{
  position:relative;display:flex;flex-direction:column;
  background:var(--glass);border:1px solid var(--card-line);border-radius:var(--radius);
  box-shadow:var(--shadow-sm);overflow:hidden;
  clip-path:polygon(0 0,100% 0,100% calc(100% - 8px),calc(100% - 8px) 100%,0 100%);
  transition:transform .2s ease-out,box-shadow .2s ease-out,border-color .2s ease-out;
}
.entry-card::before{content:"";position:absolute;left:0;right:0;top:0;height:1px;background:var(--highlight);opacity:.6}
.entry-card:hover{transform:translateY(-4px);box-shadow:var(--shadow-lg);border-color:rgba(43,108,255,.3)}
.entry-thumb{position:relative;aspect-ratio:16/9;overflow:hidden;background:linear-gradient(135deg,#0D1730,#131F3D)}
.entry-thumb img{width:100%;height:100%;object-fit:cover;border-radius:0;transition:transform .26s ease-out}
.entry-card:hover .entry-thumb img{transform:scale(1.03)}
.entry-body{padding:22px;display:flex;flex-direction:column;gap:10px;flex:1}
.entry-body h3{font-size:18px;font-weight:600}
.entry-body p{font-size:14px;color:var(--text-2);line-height:1.7;margin:0}
.entry-body .text-link{margin-top:auto;padding-top:6px}

/* ================= 手风琴 ================= */
.faq-wrap{max-width:900px}
.faq-group{margin-bottom:20px}
.group-head{
  display:flex;align-items:center;gap:14px;padding:14px 0 14px 16px;position:relative;
}
.group-head::before{content:"";position:absolute;left:0;top:12px;bottom:12px;width:3px;border-radius:3px;background:linear-gradient(180deg,var(--primary),var(--accent))}
.g-num{font-family:var(--mono);font-size:15px;color:var(--accent);letter-spacing:1px}
.group-head h3{font-size:20px;font-weight:600}
.g-count{margin-left:auto;font-size:13px;color:var(--text-3)}
.acc-list{display:flex;flex-direction:column;gap:12px}
.acc-item{
  position:relative;background:var(--glass);border:1px solid var(--card-line);border-radius:var(--radius);
  box-shadow:var(--shadow-sm);overflow:hidden;
  transition:border-color .2s ease-out,box-shadow .2s ease-out,background .2s ease-out;
}
.acc-item::after{content:"";position:absolute;left:0;top:0;bottom:0;width:3px;background:var(--primary);transform:scaleY(0);transform-origin:top;transition:transform .2s ease-out}
.acc-item:hover{border-color:rgba(43,108,255,.28)}
.acc-item.is-open{border-color:rgba(43,108,255,.42);background:var(--glass-2);box-shadow:var(--shadow-lg)}
.acc-item.is-open::after{transform:scaleY(1)}
.acc-q{
  width:100%;display:flex;align-items:center;justify-content:space-between;gap:16px;
  padding:20px 22px;background:transparent;border:none;cursor:pointer;text-align:left;
  font-size:16px;font-weight:600;color:var(--text);transition:color .16s ease-out;
}
.acc-q:hover{color:#fff}
.acc-icon{position:relative;flex:0 0 24px;width:24px;height:24px;border-radius:6px;background:var(--primary-soft);transition:transform .22s ease-out,background .22s ease-out}
.acc-icon::before,.acc-icon::after{content:"";position:absolute;left:50%;top:50%;background:var(--primary);border-radius:2px;transform:translate(-50%,-50%)}
.acc-icon::before{width:12px;height:2px}
.acc-icon::after{width:2px;height:12px;transition:transform .22s ease-out,opacity .22s ease-out}
.acc-item.is-open .acc-icon{background:rgba(43,108,255,.22)}
.acc-item.is-open .acc-icon::after{transform:translate(-50%,-50%) scaleY(0);opacity:0}
.acc-a{max-height:0;overflow:hidden;transition:max-height .26s ease-out}
.acc-a-inner{padding:0 22px 22px;color:var(--text-2);font-size:15px;line-height:1.8}
.acc-a-inner p{margin:0 0 12px}
.acc-a-inner .text-link{margin-top:4px}
.faq-empty{
  display:none;flex-direction:column;align-items:center;justify-content:center;gap:14px;
  padding:56px 24px;border:1px dashed rgba(255,255,255,.18);border-radius:var(--radius);
  color:var(--text-3);text-align:center;background:rgba(255,255,255,.02)
}
.faq-empty svg{opacity:.7}

/* ================= 支持表单 ================= */
.support-grid{display:grid;grid-template-columns:1fr 1fr;gap:32px;align-items:start}
.info-list{display:flex;flex-direction:column;gap:16px;margin-top:8px}
.info-row{
  display:flex;gap:14px;padding:18px 20px;border-radius:var(--radius);
  background:var(--glass);border:1px solid var(--card-line);box-shadow:var(--shadow-sm)
}
.info-ico{
  flex:0 0 34px;width:34px;height:34px;border-radius:10px;display:flex;align-items:center;justify-content:center;
  background:var(--accent-soft);color:var(--accent)
}
.info-row h4{font-size:16px;font-weight:600;margin-bottom:4px}
.info-row p{font-size:14px;color:var(--text-2);margin:0}
.form-card{
  background:var(--glass);border:1px solid var(--card-line);border-radius:var(--radius-lg);
  padding:28px;box-shadow:var(--shadow-sm);
  background-image:radial-gradient(680px 240px at 100% 0%,rgba(43,108,255,.14),transparent 70%)
}
.form-card h3{font-size:20px;margin-bottom:6px}
.form-card .form-tip{font-size:13px;color:var(--text-3);margin-bottom:20px}
.form-field{display:flex;flex-direction:column;gap:8px;margin-bottom:16px}
.form-field label{font-size:13px;color:var(--text-2);font-weight:600}
.form-field input,.form-field select,.form-field textarea{
  width:100%;padding:12px 14px;border-radius:10px;border:1px solid var(--card-line);
  background:rgba(6,10,22,.75);color:var(--text);font-size:15px;outline:none;
  transition:border-color .16s ease-out,box-shadow .16s ease-out;
}
.form-field textarea{min-height:96px;resize:vertical;line-height:1.7}
.form-field input::placeholder,.form-field textarea::placeholder{color:var(--text-3)}
.form-field input:focus,.form-field select:focus,.form-field textarea:focus{
  border-color:var(--primary);box-shadow:0 0 0 4px rgba(43,108,255,.12)
}
.form-note{font-size:12px;color:var(--text-3);margin-top:14px;line-height:1.7}

/* ================= CTA 条 ================= */
.cta-band{
  position:relative;overflow:hidden;
  background:var(--glass);border:1px solid var(--card-line);border-radius:var(--radius-lg);
  padding:44px;box-shadow:var(--shadow-sm);
  background-image:radial-gradient(700px 260px at 12% 0%,rgba(43,108,255,.16),transparent 68%);
}
.cta-band-inner{display:flex;align-items:center;justify-content:space-between;gap:32px;flex-wrap:wrap}
.cta-band h2{font-size:26px;font-weight:650;margin-bottom:10px}
.cta-band p{color:var(--text-2);font-size:15px;max-width:620px;margin:0}
.cta-actions{display:flex;gap:12px;flex-wrap:wrap}
.cta-points{display:flex;gap:20px;flex-wrap:wrap;margin-top:16px}
.cta-points span{display:inline-flex;align-items:center;gap:8px;font-size:14px;color:var(--text-2)}
.cta-points svg{color:var(--accent)}

/* ================= 页脚 ================= */
.site-footer{background:#04070F;border-top:1px solid var(--line);padding:64px 0 0;margin-top:0}
.footer-grid{display:grid;grid-template-columns:1.6fr 1fr 1fr 1fr;gap:32px;padding-bottom:44px}
.footer-brand p{color:var(--text-3);font-size:14px;line-height:1.8;margin-top:16px;max-width:340px}
.footer-col h4{font-size:15px;font-weight:600;margin-bottom:16px;color:var(--text)}
.footer-col ul{display:flex;flex-direction:column;gap:10px}
.footer-col a,.footer-col .static{font-size:14px;color:var(--text-3);transition:color .16s ease-out}
.footer-col a:hover{color:var(--primary)}
.footer-bottom{
  display:flex;align-items:center;justify-content:space-between;gap:16px;flex-wrap:wrap;
  padding:20px 0 28px;border-top:1px solid var(--line);color:var(--text-3);font-size:13px
}
.footer-bottom .links{display:flex;gap:18px;flex-wrap:wrap}
.footer-bottom a{color:var(--text-3);transition:color .16s ease-out}
.footer-bottom a:hover{color:var(--primary)}

/* ================= 响应式 ================= */
@media (max-width:1199px){
  .entry-grid{grid-template-columns:repeat(2,1fr)}
  .page-hero h1{font-size:36px}
}
@media (max-width:1023px){
  .section{padding:64px 0}
  .sec-title h2{font-size:26px}
  .support-grid{grid-template-columns:1fr}
  .footer-grid{grid-template-columns:1fr 1fr;gap:28px}
  .cta-band{padding:34px}
}
@media (max-width:900px){
  .nav-links{
    position:fixed;top:0;right:0;height:100vh;width:80%;max-width:340px;
    flex-direction:column;align-items:stretch;gap:4px;
    background:#070C1A;border-left:1px solid var(--line);
    padding:96px 22px 32px;overflow-y:auto;z-index:65;
    transform:translateX(102%);transition:transform .26s ease-out;
  }
  .nav-links.is-open{transform:translateX(0)}
  .nav-link{padding:14px 12px;font-size:16px;border-radius:10px}
  .nav-link::after{display:none}
  .nav-link.is-active{background:var(--primary-soft)}
  .nav-toggle{display:inline-flex}
  .nav-search span{display:none}
  .nav-search{padding:0 12px}
  .topbar-mid{display:none}
  .brand-sub{display:none}
}
@media (max-width:767px){
  .section{padding:48px 0}
  .container{padding:0 16px}
  .page-hero{padding:44px 0 52px;margin-top:12px}
  .page-hero h1{font-size:26px}
  .hero-lead{font-size:15px}
  .search-box{flex-direction:column;align-items:stretch;padding:12px;border-radius:14px}
  .search-box input{height:44px;padding:0 6px}
  .search-box .btn{width:100%}
  .entry-grid{grid-template-columns:1fr}
  .sec-title h2{font-size:22px}
  .faq-wrap{max-width:none}
  .cta-band{padding:26px 20px}
  .cta-band h2{font-size:22px}
  .cta-actions{width:100%}
  .cta-actions .btn{width:100%}
  .footer-grid{grid-template-columns:1fr}
  .footer-bottom{flex-direction:column;align-items:flex-start}
  .acc-q{padding:16px;font-size:15px}
  .acc-a-inner{padding:0 16px 18px}
  .form-card{padding:22px}
  .nav-cta{height:36px;padding:0 14px;font-size:13px}
}
@media (prefers-reduced-motion:reduce){
  *{animation:none!important;transition:none!important;scroll-behavior:auto!important}
}

/* roulang page: category5 */
:root{
  --bg:#060A16;
  --bg-deep:#050810;
  --bg-soft:#0A1122;
  --glass:rgba(255,255,255,.045);
  --glass-strong:rgba(255,255,255,.07);
  --primary:#2B6CFF;
  --primary-soft:rgba(43,108,255,.12);
  --accent:#1FE0A8;
  --accent-soft:rgba(31,224,168,.12);
  --warn:#FFC24B;
  --orange:#FF8A3D;
  --danger:#FF5A76;
  --text:#EAF0FB;
  --text-2:#A6B4CE;
  --text-3:#6C7A97;
  --line:rgba(255,255,255,.08);
  --card-border:rgba(255,255,255,.10);
  --card-hi:rgba(255,255,255,.18);
  --r-sm:10px;
  --r-md:12px;
  --r-lg:16px;
  --r-xl:20px;
  --sh-card:0 8px 28px rgba(0,0,0,.35);
  --sh-card-hover:0 16px 44px rgba(0,0,0,.45);
  --sh-primary:0 8px 28px rgba(43,108,255,.45);
  --sp-section:96px;
  --ease:cubic-bezier(.22,.61,.36,1);
  --font-cn:"PingFang SC","Microsoft YaHei","Hiragino Sans GB","Noto Sans SC","Source Han Sans SC",sans-serif;
  --font-num:"Inter","Space Grotesk","SFMono-Regular",Consolas,monospace;
}
*,*::before,*::after{box-sizing:border-box}
html{-webkit-text-size-adjust:100%;scroll-behavior:smooth;scroll-padding-top:96px}
body{
  margin:0;background:var(--bg);color:var(--text);
  font-family:var(--font-cn);font-size:16px;line-height:1.8;
  -webkit-font-smoothing:antialiased;text-rendering:optimizeLegibility;
}
body.nav-locked{overflow:hidden}
img{max-width:100%;display:block}
a{color:inherit;text-decoration:none;transition:color .16s ease-out,opacity .16s ease-out}
p{margin:0 0 .9em}
h1,h2,h3,h4{margin:0;font-weight:650;letter-spacing:-.2px;line-height:1.35}
ul,ol{margin:0;padding:0}
button,input,select,textarea{font:inherit;color:inherit}
button{cursor:pointer;background:none;border:0}
:focus-visible{outline:2px solid var(--accent);outline-offset:2px;border-radius:6px}
::selection{background:rgba(43,108,255,.4);color:#fff}

.container{width:100%;max-width:1200px;margin:0 auto;padding:0 24px}
@media (min-width:1440px){.container{max-width:1320px}}

/* ================= 顶部导航 ================= */
.site-header{
  position:sticky;top:0;z-index:70;
  background:rgba(5,8,16,.82);
  backdrop-filter:blur(16px);-webkit-backdrop-filter:blur(16px);
  border-bottom:1px solid transparent;
  transition:background .2s ease-out,border-color .2s ease-out,box-shadow .2s ease-out;
}
.site-header.is-scrolled{
  background:rgba(5,8,16,.96);
  border-bottom-color:var(--line);
  box-shadow:0 12px 34px rgba(0,0,0,.4);
}
.navbar{display:flex;align-items:center;gap:20px;height:68px}
.brand{display:flex;align-items:center;gap:10px;min-height:28px;flex:0 0 auto}
.brand-mark{
  width:34px;height:34px;display:grid;place-items:center;flex:0 0 auto;
  background:linear-gradient(135deg,var(--primary),var(--accent));
  color:#04101F;font-family:var(--font-num);font-weight:800;font-size:16px;
  clip-path:polygon(0 0,calc(100% - 9px) 0,100% 9px,100% 100%,0 100%);
}
.brand-text{display:flex;flex-direction:column;justify-content:center}
.brand-name{font-size:15px;font-weight:700;line-height:1.25;letter-spacing:.2px}
.brand-sub{font-family:var(--font-num);font-size:9.5px;letter-spacing:.18em;color:var(--text-3);line-height:1.4}
.nav-links{display:flex;align-items:center;gap:2px;margin-left:auto}
.nav-link{
  position:relative;padding:10px 12px;font-size:14px;color:var(--text-2);
  border-radius:10px;transition:color .16s ease-out,background .16s ease-out;
}
.nav-link::after{
  content:"";position:absolute;left:12px;right:12px;bottom:5px;height:2px;border-radius:2px;
  background:var(--primary);transform:scaleX(0);transform-origin:left;
  transition:transform .18s var(--ease);
}
.nav-link:hover{color:var(--text)}
.nav-link:hover::after{transform:scaleX(1)}
.nav-link.is-active{color:#fff;font-weight:600}
.nav-link.is-active::after{transform:scaleX(1)}
.nav-right{display:flex;align-items:center;gap:10px;flex:0 0 auto}
.nav-search{
  display:inline-flex;align-items:center;gap:6px;padding:8px 13px;font-size:13px;
  color:var(--text-2);border:1px solid var(--line);border-radius:999px;
  transition:border-color .16s ease-out,color .16s ease-out,background .16s ease-out;
}
.nav-search:hover{color:#fff;border-color:rgba(43,108,255,.5);background:var(--primary-soft)}
.nav-toggle{
  display:none;position:relative;width:44px;height:44px;border-radius:12px;
  border:1px solid var(--line);color:var(--text);
}
.nav-toggle span,
.nav-toggle span::before,
.nav-toggle span::after{
  content:"";position:absolute;left:50%;width:18px;height:2px;border-radius:2px;background:currentColor;
  transform:translateX(-50%);transition:transform .2s var(--ease),opacity .2s ease-out;
}
.nav-toggle span{top:50%;margin-top:-1px}
.nav-toggle span::before{top:-6px}
.nav-toggle span::after{top:6px}
.nav-toggle.is-open span{transform:translateX(-50%) rotate(45deg)}
.nav-toggle.is-open span::before{transform:translateX(-50%) translateY(6px) rotate(-90deg)}
.nav-toggle.is-open span::after{opacity:0;transform:translateX(-50%) translateY(-6px)}
.nav-mask{
  position:fixed;inset:0;z-index:65;background:rgba(3,6,14,.66);
  backdrop-filter:blur(3px);opacity:0;pointer-events:none;transition:opacity .24s ease-out;
}
.nav-mask.is-open{opacity:1;pointer-events:auto}

/* ================= 按钮 ================= */
.btn{
  display:inline-flex;align-items:center;justify-content:center;gap:8px;
  padding:11px 22px;font-size:14px;font-weight:600;border-radius:999px;
  border:1px solid transparent;transition:transform .18s var(--ease),box-shadow .18s var(--ease),background .18s ease-out,border-color .18s ease-out,filter .18s ease-out;
}
.btn-primary{
  background:var(--primary);color:#fff;box-shadow:var(--sh-primary);border-color:rgba(43,108,255,.9);
}
.btn-primary:hover{transform:translateY(-2px);filter:brightness(1.06);box-shadow:0 14px 38px rgba(43,108,255,.55)}
.btn-primary:active{transform:translateY(1px);box-shadow:0 5px 18px rgba(43,108,255,.35)}
.btn-ghost{
  background:transparent;color:var(--text);border-color:var(--card-border);
}
.btn-ghost:hover{background:rgba(43,108,255,.08);border-color:rgba(43,108,255,.45);transform:translateY(-2px)}
.btn-ghost:active{transform:translateY(1px)}
.nav-cta{padding:9px 18px;font-size:13px}
.text-link{
  display:inline-flex;align-items:center;gap:6px;color:var(--primary);font-size:14px;font-weight:600;
}
.text-link i{font-style:normal;transition:transform .18s var(--ease)}
.text-link:hover{text-decoration:underline}
.text-link:hover i{transform:translateX(3px)}

/* ================= 面包屑 / 首屏 ================= */
.breadcrumb{
  display:flex;align-items:center;flex-wrap:wrap;gap:8px;
  font-size:13px;color:var(--text-3);padding:22px 0 0;
}
.breadcrumb a{color:var(--text-3)}
.breadcrumb a:hover{color:var(--primary)}
.breadcrumb .sep{color:rgba(255,255,255,.18)}
.breadcrumb .cur{color:var(--text-2)}

.page-hero{
  position:relative;padding:26px 0 56px;overflow:hidden;
  border-bottom:1px solid var(--line);
}
.page-hero::before{
  content:"";position:absolute;inset:0;
  background:url("/assets/images/backpic/back-2.webp") center/cover no-repeat;
  opacity:.24;
  -webkit-mask-image:linear-gradient(180deg,rgba(0,0,0,.9),rgba(0,0,0,.15));
  mask-image:linear-gradient(180deg,rgba(0,0,0,.9),rgba(0,0,0,.15));
}
.page-hero::after{
  content:"";position:absolute;inset:0;pointer-events:none;
  background-image:repeating-linear-gradient(135deg,rgba(255,255,255,.055) 0 1px,transparent 1px 15px);
  opacity:.75;
}
.page-hero .container{position:relative;z-index:1}
.hero-tag{
  display:inline-flex;align-items:center;gap:8px;padding:5px 12px;margin-bottom:16px;
  font-size:12.5px;letter-spacing:.06em;color:var(--accent);
  background:var(--accent-soft);border:1px solid rgba(31,224,168,.28);border-radius:999px;
}
.hero-tag::before{content:"";width:6px;height:6px;border-radius:50%;background:var(--accent)}
.page-hero h1{
  font-size:44px;font-weight:700;letter-spacing:-.5px;margin-bottom:16px;max-width:900px;
}
.page-hero h1 em{font-style:normal;color:var(--primary)}
.hero-lead{max-width:780px;color:var(--text-2);font-size:16.5px;line-height:1.85;margin-bottom:26px}

.version-bar{
  display:flex;flex-wrap:wrap;align-items:center;gap:10px 26px;
  padding:16px 22px;border-radius:var(--r-lg);
  background:var(--glass);border:1px solid var(--card-border);
  backdrop-filter:blur(18px);-webkit-backdrop-filter:blur(18px);
  box-shadow:var(--sh-card);max-width:940px;
}
.version-badge{
  font-family:var(--font-num);font-size:13px;font-weight:700;color:#04101F;
  background:linear-gradient(135deg,var(--accent),#5BF0C4);padding:4px 12px;
  clip-path:polygon(0 0,calc(100% - 8px) 0,100% 8px,100% 100%,0 100%);
}
.version-item{font-size:13.5px;color:var(--text-2);display:inline-flex;align-items:center;gap:8px}
.version-item::before{content:"";width:1px;height:14px;background:var(--line)}
.version-item:first-of-type::before{display:none}

/* ================= 主体布局 ================= */
main{display:block}
.section{padding:var(--sp-section) 0 0}
.policy-layout{
  display:grid;grid-template-columns:minmax(0,760px) 292px;gap:48px;
  justify-content:center;align-items:start;
}

.sec-head{display:flex;align-items:center;gap:12px;padding-left:14px;border-left:3px solid var(--primary);margin-bottom:22px}
.sec-idx{
  font-family:var(--font-num);font-size:12.5px;font-weight:700;letter-spacing:.08em;
  color:var(--accent);background:var(--accent-soft);padding:3px 9px;
  clip-path:polygon(0 0,calc(100% - 6px) 0,100% 6px,100% 100%,0 100%);
}
.sec-head h2{font-size:30px;font-weight:650}
.sec-desc{color:var(--text-2);font-size:15px;max-width:760px;margin-bottom:26px}

/* 条款正文 */
.policy-body{
  background:transparent;
}
.policy-sec{
  position:relative;padding:26px 0 28px;border-bottom:1px dashed var(--line);
}
.policy-sec:last-child{border-bottom:0;padding-bottom:8px}
.policy-sec h3{
  position:relative;font-size:20px;font-weight:600;padding-left:18px;margin-bottom:14px;
  display:flex;align-items:baseline;gap:10px;flex-wrap:wrap;
}
.policy-sec h3::before{
  content:"";position:absolute;left:0;top:4px;bottom:4px;width:3px;border-radius:3px;
  background:linear-gradient(180deg,var(--primary),var(--accent));
}
.policy-sec h3 .no{
  font-family:var(--font-num);font-size:13px;color:var(--text-3);letter-spacing:.08em;
}
.policy-sec p{color:var(--text-2);font-size:15.5px;line-height:1.9;margin-bottom:14px}
.policy-sec p:last-child{margin-bottom:0}
.policy-sec strong{color:var(--text);font-weight:600}
.policy-list{list-style:none;margin:4px 0 16px}
.policy-list li{
  position:relative;padding-left:20px;color:var(--text-2);font-size:15.5px;margin-bottom:10px;line-height:1.85;
}
.policy-list li::before{
  content:"";position:absolute;left:2px;top:.68em;width:7px;height:7px;border-radius:2px;
  background:var(--accent);transform:rotate(45deg);
}
.note{
  margin:16px 0 0;padding:16px 20px;border-left:3px solid var(--primary);
  background:var(--glass);border-radius:0 var(--r-md) var(--r-md) 0;
  color:var(--text-2);font-size:15px;
  backdrop-filter:blur(14px);-webkit-backdrop-filter:blur(14px);
}
.note b{color:var(--text)}

/* 侧栏 */
.policy-side{position:sticky;top:96px;display:flex;flex-direction:column;gap:20px}
.side-card{
  padding:22px;border-radius:var(--r-lg);
  background:var(--glass);border:1px solid var(--card-border);
  box-shadow:var(--sh-card);
  backdrop-filter:blur(18px);-webkit-backdrop-filter:blur(18px);
  position:relative;overflow:hidden;
}
.side-card::before{
  content:"";position:absolute;top:0;left:0;right:0;height:1px;background:var(--card-hi);opacity:.6;
}
.side-card h3{font-size:15px;font-weight:650;margin-bottom:14px;display:flex;align-items:center;gap:8px}
.side-card h3::before{content:"";width:3px;height:14px;border-radius:3px;background:var(--primary)}
.toc-list{list-style:none;border-left:1px solid var(--line);margin-left:4px}
.toc-list li{margin:0}
.toc-list a{
  display:block;padding:8px 0 8px 14px;font-size:13.5px;color:var(--text-2);
  border-left:2px solid transparent;margin-left:-1px;line-height:1.6;
  transition:color .16s ease-out,border-color .16s ease-out,background .16s ease-out;
}
.toc-list a:hover{color:var(--text);background:rgba(43,108,255,.06)}
.toc-list a.is-current{color:var(--primary);border-left-color:var(--primary);font-weight:600}
.side-help img{
  width:100%;height:150px;object-fit:cover;border-radius:var(--r-md);margin-bottom:16px;
  border:1px solid var(--line);filter:saturate(.92);
}
.side-help p{font-size:13.5px;color:var(--text-2);line-height:1.75}

/* ================= 要点速览 ================= */
.highlight-grid{
  display:grid;grid-template-columns:minmax(0,5fr) minmax(0,7fr);gap:40px;align-items:center;
}
.highlight-media{
  position:relative;border-radius:var(--r-lg);overflow:hidden;
  border:1px solid var(--card-border);box-shadow:var(--sh-card);
}
.highlight-media img{width:100%;height:340px;object-fit:cover;transition:transform .3s var(--ease)}
.highlight-media:hover img{transform:scale(1.03)}
.highlight-media::after{
  content:"";position:absolute;inset:0;
  background:linear-gradient(180deg,rgba(6,10,22,.05),rgba(6,10,22,.72));
}
.highlight-media .cap{
  position:absolute;left:20px;bottom:16px;z-index:1;font-size:13px;color:var(--text-2);
}
.point-list{list-style:none;display:flex;flex-direction:column;gap:14px}
.point-item{
  display:flex;gap:16px;padding:18px 20px;border-radius:var(--r-lg);
  background:var(--glass);border:1px solid var(--card-border);
  transition:transform .18s var(--ease),border-color .18s ease-out,box-shadow .18s var(--ease);
}
.point-item:hover{transform:translateY(-4px);border-color:rgba(43,108,255,.3);box-shadow:var(--sh-card-hover)}
.point-icon{
  flex:0 0 auto;width:38px;height:38px;display:grid;place-items:center;border-radius:12px;
  background:var(--primary-soft);border:1px solid rgba(43,108,255,.3);color:var(--primary);
}
.point-item h3{font-size:15.5px;font-weight:650;margin-bottom:4px}
.point-item p{font-size:14px;color:var(--text-2);margin:0;line-height:1.75}

/* ================= FAQ ================= */
.faq-list{display:flex;flex-direction:column;gap:12px;max-width:900px}
.faq-item{
  position:relative;border-radius:var(--r-lg);overflow:hidden;
  background:var(--glass);border:1px solid var(--card-border);
  backdrop-filter:blur(18px);-webkit-backdrop-filter:blur(18px);
  transition:border-color .18s ease-out,background .18s ease-out;
}
.faq-item::before{
  content:"";position:absolute;left:0;top:0;bottom:0;width:3px;background:var(--primary);
  transform:scaleY(0);transform-origin:top;transition:transform .2s var(--ease);
}
.faq-item.is-open{border-color:rgba(43,108,255,.32);background:var(--glass-strong)}
.faq-item.is-open::before{transform:scaleY(1)}
.faq-q{
  width:100%;display:flex;align-items:center;justify-content:space-between;gap:16px;
  padding:20px 22px;text-align:left;font-size:16px;font-weight:600;color:var(--text);
  min-height:44px;
}
.faq-q:hover{color:#fff}
.faq-icon{
  position:relative;flex:0 0 auto;width:20px;height:20px;border-radius:50%;
  border:1px solid rgba(255,255,255,.22);transition:border-color .2s ease-out,transform .2s var(--ease);
}
.faq-icon::before,.faq-icon::after{
  content:"";position:absolute;left:50%;top:50%;background:var(--text-2);
  transform:translate(-50%,-50%);transition:opacity .2s ease-out,background .2s ease-out;
}
.faq-icon::before{width:9px;height:1.5px}
.faq-icon::after{width:1.5px;height:9px}
.faq-item.is-open .faq-icon{border-color:rgba(43,108,255,.5);transform:rotate(180deg)}
.faq-item.is-open .faq-icon::before{background:var(--primary)}
.faq-item.is-open .faq-icon::after{opacity:0}
.faq-a{display:grid;grid-template-rows:0fr;transition:grid-template-rows .24s var(--ease)}
.faq-item.is-open .faq-a{grid-template-rows:1fr}
.faq-a-inner{overflow:hidden}
.faq-a-inner p{
  padding:0 22px 20px;margin:0;font-size:15px;color:var(--text-2);line-height:1.85;
}

/* ================= CTA ================= */
.cta-band{padding:var(--sp-section) 0 0}
.cta-card{
  position:relative;overflow:hidden;border-radius:var(--r-xl);
  padding:44px;display:grid;grid-template-columns:minmax(0,7fr) minmax(0,5fr);gap:40px;align-items:center;
  background:var(--glass);border:1px solid var(--card-border);
  box-shadow:var(--sh-card);
  backdrop-filter:blur(18px);-webkit-backdrop-filter:blur(18px);
}
.cta-card::before{
  content:"";position:absolute;inset:0;pointer-events:none;
  background:radial-gradient(720px 320px at 12% -10%,rgba(43,108,255,.22),transparent 70%);
}
.cta-card>*{position:relative;z-index:1}
.cta-card h2{font-size:28px;font-weight:650;margin-bottom:12px}
.cta-card p{color:var(--text-2);font-size:15.5px;line-height:1.85}
.cta-list{list-style:none;margin-top:18px;display:flex;flex-direction:column;gap:10px}
.cta-list li{position:relative;padding-left:26px;font-size:14.5px;color:var(--text-2)}
.cta-list li::before{
  content:"";position:absolute;left:0;top:.42em;width:14px;height:14px;border-radius:50%;
  background:var(--accent-soft);border:1px solid rgba(31,224,168,.45);
}
.cta-list li::after{
  content:"";position:absolute;left:4.5px;top:.72em;width:5px;height:8px;
  border-right:2px solid var(--accent);border-bottom:2px solid var(--accent);transform:rotate(40deg);
}
.cta-actions{display:flex;flex-direction:column;gap:14px}
.cta-actions .btn{width:100%}
.cta-note{font-size:12.5px;color:var(--text-3);margin:0;text-align:center}
.cta-note a{color:var(--text-2);text-decoration:underline}

/* ================= 页脚 ================= */
.site-footer{
  margin-top:var(--sp-section);background:var(--bg-deep);
  border-top:1px solid var(--line);padding:64px 0 28px;
}
.footer-grid{
  display:grid;grid-template-columns:minmax(0,1.4fr) repeat(3,minmax(0,1fr));gap:40px;
}
.footer-brand .brand{margin-bottom:16px}
.footer-brand p{color:var(--text-3);font-size:13.5px;line-height:1.85;max-width:340px}
.footer-col h4{font-size:14px;font-weight:650;margin-bottom:16px;color:var(--text)}
.footer-col ul{list-style:none;display:flex;flex-direction:column;gap:11px}
.footer-col a,.footer-col .static{font-size:13.5px;color:var(--text-3)}
.footer-col a:hover{color:var(--primary)}
.footer-bottom{
  margin-top:48px;padding-top:22px;border-top:1px solid var(--line);
  display:flex;align-items:center;justify-content:space-between;gap:16px;flex-wrap:wrap;
  font-size:13px;color:var(--text-3);
}
.footer-bottom .links{display:flex;gap:20px;flex-wrap:wrap}
.footer-bottom .links a:hover{color:var(--primary)}

/* ================= 入场动效 ================= */
.reveal{opacity:0;transform:translateY(16px);transition:opacity .26s ease-out,transform .26s ease-out}
.reveal.is-in{opacity:1;transform:none}

/* ================= 响应式 ================= */
@media (max-width:1199px){
  .page-hero h1{font-size:36px}
  .policy-layout{grid-template-columns:minmax(0,1fr) 268px;gap:32px}
  .sec-head h2{font-size:26px}
}
@media (max-width:1023px){
  :root{--sp-section:64px}
  .nav-links{
    position:fixed;top:0;right:0;bottom:0;z-index:88;
    width:min(84vw,340px);margin:0;padding:92px 20px 28px;
    flex-direction:column;align-items:stretch;gap:6px;overflow-y:auto;
    background:#080D1C;border-left:1px solid var(--line);
    transform:translateX(105%);transition:transform .26s var(--ease);
    box-shadow:-20px 0 50px rgba(0,0,0,.5);
  }
  .nav-links.is-open{transform:translateX(0)}
  .nav-link{padding:14px 12px;font-size:15px;border-radius:12px;min-height:44px;display:flex;align-items:center}
  .nav-link::after{display:none}
  .nav-link.is-active{background:var(--primary-soft);color:#fff}
  .nav-toggle{display:inline-flex;align-items:center;justify-content:center}
  .nav-search span{display:none}
  .nav-search{padding:9px 11px}
  .nav-cta{padding:9px 16px}
  .policy-layout{grid-template-columns:minmax(0,1fr)}
  .policy-side{display:none}
  .policy-body{max-width:760px;margin:0 auto;width:100%}
  .highlight-grid{grid-template-columns:minmax(0,1fr);gap:32px}
  .highlight-media img{height:280px}
  .cta-card{grid-template-columns:minmax(0,1fr);padding:34px}
  .footer-grid{grid-template-columns:repeat(2,minmax(0,1fr));gap:32px}
}
@media (max-width:767px){
  :root{--sp-section:48px}
  .container{padding:0 16px}
  .navbar{height:60px;gap:12px}
  .brand-name{font-size:13.5px}
  .brand-sub{display:none}
  .brand-mark{width:30px;height:30px;font-size:14px}
  .nav-cta{display:none}
  .page-hero{padding:18px 0 40px}
  .breadcrumb{padding-top:16px;font-size:12.5px}
  .page-hero h1{font-size:26px}
  .hero-tag{font-size:12px}
  .hero-lead{font-size:15px}
  .version-bar{padding:14px 16px;gap:10px 18px}
  .version-item{font-size:13px}
  .sec-head h2{font-size:22px}
  .sec-head{gap:10px;padding-left:11px}
  .policy-sec{padding:22px 0 24px}
  .policy-sec h3{font-size:17.5px}
  .policy-sec p,.policy-list li{font-size:15px}
  .point-item{padding:16px}
  .point-icon{width:34px;height:34px}
  .faq-q{padding:17px 18px;font-size:15px}
  .faq-a-inner p{padding:0 18px 18px;font-size:14.5px}
  .cta-card{padding:26px 20px;gap:26px}
  .cta-card h2{font-size:22px}
  .btn{width:100%}
  .nav-cta{width:auto}
  .footer-grid{grid-template-columns:minmax(0,1fr)}
  .footer-bottom{flex-direction:column;align-items:flex-start;margin-top:34px}
}
@media (max-width:520px){
  .page-hero h1{font-size:23px}
  .hero-lead{font-size:14.5px}
  .version-badge{font-size:12px}
  .highlight-media img{height:220px}
}
@media (prefers-reduced-motion:reduce){
  *{animation:none !important;transition:none !important;scroll-behavior:auto !important}
  .reveal{opacity:1;transform:none}
}