/* roulang page: index */
:root{
  --bg-0:#05070F;
  --bg-1:#0A1122;
  --bg-2:#101A33;
  --brand:#2F6BFF;
  --brand-deep:#1740B8;
  --brand-soft:#7FA6FF;
  --accent:#2BE6C0;
  --promo:#FF8A2B;
  --nav-bg:#FFFFFF;
  --nav-text:#0B1226;
  --nav-sub:#5A6683;
  --nav-line:#E6EAF3;
  --text:#C7D2E8;
  --text-dim:#8A97B4;
  --head:#EAF1FF;
  --card-line:rgba(120,170,255,.16);
  --r-card:18px;
  --r-img:14px;
  --r-btn:12px;
  --shadow-card:0 18px 40px -20px rgba(0,0,0,.8);
  --font-cn:'PingFang SC','HarmonyOS Sans SC','Microsoft YaHei','Source Han Sans SC',system-ui,sans-serif;
}
*,*::before,*::after{box-sizing:border-box}
html{scroll-behavior:smooth}
body{
  margin:0;
  background:var(--bg-1);
  color:var(--text);
  font-family:var(--font-cn);
  font-size:16px;
  line-height:1.85;
  -webkit-font-smoothing:antialiased;
  overflow-x:hidden;
}
img{display:block;max-width:100%}
a{color:inherit;text-decoration:none}
button,input,select,textarea{font:inherit;color:inherit}
ul,ol{margin:0;padding:0;list-style:none}
h1,h2,h3,h4,p{margin:0}
.num{font-variant-numeric:tabular-nums;font-weight:800;letter-spacing:.5px}
:focus-visible{outline:2px solid var(--accent);outline-offset:2px;border-radius:4px}

.container-x{max-width:1200px;margin:0 auto;padding:0 20px}
@media(min-width:768px){.container-x{padding:0 28px}}
@media(min-width:1280px){.container-x{max-width:1240px;padding:0 32px}}

/* ---------- 顶栏 ---------- */
.site-header{position:sticky;top:0;z-index:60;background:var(--nav-bg)}
.site-header::after{content:"";display:block;height:2px;background:linear-gradient(90deg,var(--brand),var(--accent) 52%,var(--brand-soft))}
.nav-wrap{max-width:1200px;margin:0 auto;padding:0 20px;height:64px;display:flex;align-items:center;gap:20px}
@media(min-width:768px){.nav-wrap{padding:0 28px}}
@media(min-width:1280px){.nav-wrap{max-width:1240px;padding:0 32px}}
@media(max-width:640px){.nav-wrap{height:56px;gap:12px}}
.logo{display:flex;align-items:center;gap:10px;font-size:17px;font-weight:700;color:var(--nav-text);white-space:nowrap;letter-spacing:.2px}
.logo svg{width:26px;height:26px;flex:none}
@media(max-width:640px){.logo{font-size:15px}.logo svg{width:22px;height:22px}}
.nav-links{display:none;align-items:center;gap:28px;margin-left:14px}
@media(min-width:1024px){.nav-links{display:flex}}
.nav-links a{position:relative;font-size:16px;color:var(--nav-text);padding:6px 0;transition:color .2s ease}
.nav-links a::after{content:"";position:absolute;left:0;right:0;bottom:-2px;height:2px;background:linear-gradient(90deg,var(--brand),var(--accent));transform:scaleX(0);transform-origin:left;transition:transform .22s ease}
.nav-links a:hover{color:var(--brand)}
.nav-links a:hover::after,.nav-links a.active::after{transform:scaleX(1)}
.nav-links a.active{color:var(--brand)}
.nav-right{margin-left:auto;display:flex;align-items:center;gap:12px}
.search-box{display:none;align-items:center;gap:8px;background:#F2F5FB;border:1px solid transparent;border-radius:999px;padding:8px 14px;width:220px;transition:border-color .2s,box-shadow .2s}
@media(min-width:1024px){.search-box{display:flex}}
.search-box:focus-within{border-color:var(--brand);box-shadow:0 0 0 4px rgba(47,107,255,.18)}
.search-box svg{width:16px;height:16px;flex:none;stroke:var(--nav-sub)}
.search-box input{width:100%;border:0;outline:0;background:transparent;font-size:14px;color:var(--nav-text)}
.search-box input::placeholder{color:var(--nav-sub)}
.btn-primary{display:inline-flex;align-items:center;justify-content:center;gap:8px;padding:11px 22px;border:0;border-radius:var(--r-btn);background:linear-gradient(135deg,var(--brand),var(--brand-deep));color:#fff;font-size:15px;font-weight:700;cursor:pointer;box-shadow:0 0 0 1px rgba(47,107,255,.55),0 10px 30px -8px rgba(47,107,255,.6);transition:transform .2s ease,box-shadow .25s ease,filter .2s ease}
.btn-primary:hover{filter:brightness(1.08);transform:translateY(-2px);box-shadow:0 0 0 1px rgba(47,107,255,.6),0 18px 38px -6px rgba(47,107,255,.75)}
.btn-primary:active{transform:translateY(1px)}
.btn-outline{display:inline-flex;align-items:center;justify-content:center;gap:8px;padding:11px 22px;border-radius:var(--r-btn);border:1px solid rgba(43,230,192,.55);background:rgba(43,230,192,.06);color:#DFFBF4;font-size:15px;font-weight:600;cursor:pointer;transition:background .2s,transform .2s,border-color .2s}
.btn-outline:hover{background:rgba(43,230,192,.14);border-color:var(--accent);transform:translateY(-2px)}
.btn-outline:active{transform:translateY(1px)}
.nav-cta{padding:9px 18px;font-size:14px;border-radius:999px}
@media(max-width:768px){.nav-cta{display:none}}
.menu-btn{display:flex;flex-direction:column;justify-content:center;gap:5px;width:40px;height:40px;border:1px solid var(--nav-line);border-radius:10px;background:#fff;cursor:pointer}
.menu-btn span{display:block;height:2px;width:18px;margin:0 auto;background:var(--nav-text);border-radius:2px;transition:transform .2s,opacity .2s}
@media(min-width:1024px){.menu-btn{display:none}}
.drawer{display:none;border-top:1px solid var(--nav-line);background:#fff;padding:10px 20px 22px}
.drawer.open{display:block}
@media(min-width:1024px){.drawer.open{display:none}}
.drawer a{display:block;padding:14px 4px;border-bottom:1px solid var(--nav-line);color:var(--nav-text);font-size:16px}
.drawer a.active{color:var(--brand);font-weight:700}
.drawer .drawer-cta{display:flex;justify-content:center;margin-top:18px;border:0;border-radius:var(--r-btn);background:linear-gradient(135deg,var(--brand),var(--brand-deep));color:#fff;font-weight:700;padding:13px 0}

/* ---------- Hero ---------- */
.hero{position:relative;min-height:min(78vh,720px);display:flex;align-items:center;background-image:url('/assets/images/backpic/back-1.webp');background-size:cover;background-position:center;overflow:hidden}
.hero::before{content:"";position:absolute;inset:0;background:linear-gradient(180deg,rgba(5,7,15,.72),rgba(5,7,15,.94))}
.hero::after{content:"";position:absolute;inset:0;background-image:linear-gradient(rgba(120,170,255,.06) 1px,transparent 1px),linear-gradient(90deg,rgba(120,170,255,.06) 1px,transparent 1px);background-size:46px 46px;opacity:.7;-webkit-mask-image:linear-gradient(180deg,#000,transparent 78%);mask-image:linear-gradient(180deg,#000,transparent 78%)}
.hero-inner{position:relative;z-index:2;width:100%;padding:72px 0 64px}
.hero-grid{display:grid;gap:40px}
@media(min-width:1024px){.hero-grid{grid-template-columns:1.12fr .88fr;align-items:center;gap:56px}}
.hero-tag{display:inline-flex;align-items:center;gap:8px;padding:6px 14px;border-radius:6px;border:1px solid rgba(43,230,192,.4);background:rgba(43,230,192,.08);color:#B9FBEC;font-size:12px;font-weight:700;letter-spacing:1px}
.hero-tag i{width:6px;height:6px;border-radius:50%;background:var(--accent);box-shadow:0 0 10px var(--accent)}
.hero h1{margin:22px 0 20px;font-size:clamp(30px,4.4vw,52px);line-height:1.18;font-weight:800;color:#fff;letter-spacing:.3px;max-width:19ch}
.hero-sub{max-width:22ch;font-size:clamp(16px,1.5vw,19px);color:#D5DEF2;line-height:1.7}
.hero-actions{display:flex;flex-wrap:wrap;gap:14px;margin-top:34px}
.hero-note{margin-top:18px;font-size:13px;color:var(--text-dim)}
.glass{background:rgba(255,255,255,.06);backdrop-filter:blur(18px) saturate(140%);-webkit-backdrop-filter:blur(18px) saturate(140%);border:1px solid rgba(120,170,255,.16);border-radius:var(--r-card);box-shadow:var(--shadow-card)}
.hero-card{padding:26px 24px 24px}
@media(min-width:1024px){.hero-card{padding:30px 28px 28px}}
.hero-card-top{display:flex;align-items:center;justify-content:space-between;gap:12px;flex-wrap:wrap}
.badge{display:inline-flex;align-items:center;gap:6px;padding:4px 10px;border-radius:6px;font-size:12px;font-weight:700;line-height:1.7}
.badge-live{background:rgba(255,138,43,.14);border:1px solid rgba(255,138,43,.5);color:#FFC391}
.badge-cat{background:rgba(43,230,192,.1);border:1px solid rgba(43,230,192,.35);color:#8FF2DE}
.hero-card-label{font-size:13px;color:var(--text-dim)}
.countdown{display:flex;align-items:flex-end;gap:8px;margin:22px 0 20px}
.cd-cell{display:flex;flex-direction:column;align-items:center;min-width:66px}
.cd-cell span{font-size:clamp(28px,3.4vw,40px);line-height:1;color:#fff;font-variant-numeric:tabular-nums;font-weight:800;letter-spacing:1px}
.cd-cell small{font-size:12px;color:var(--text-dim);margin-top:8px;letter-spacing:1px}
.cd-sep{font-size:26px;color:var(--brand-soft);padding-bottom:22px}
.hero-card-list{border-top:1px solid rgba(120,170,255,.14);padding-top:16px;display:grid;gap:12px}
.hero-card-list li{display:flex;align-items:center;justify-content:space-between;font-size:14px;color:var(--text-dim)}
.hero-card-list li b{color:var(--accent);font-size:15px}
.hero-card-btn{width:100%;margin-top:22px}

/* ---------- 通用板块 ---------- */
.section{padding:clamp(56px,7vw,104px) 0}
.section-alt{background:var(--bg-2)}
.section-head{display:flex;align-items:flex-end;justify-content:space-between;gap:20px;flex-wrap:wrap;margin-bottom:38px}
.eyebrow{font-size:13px;font-weight:700;letter-spacing:2px;color:var(--accent);margin-bottom:10px}
.section-head h2{font-size:clamp(24px,3vw,34px);line-height:1.25;font-weight:700;color:var(--head);max-width:24ch}
.section-head p.lead{margin-top:14px;max-width:76ch;color:var(--text-dim);font-size:15.5px}
.link-more{font-size:14px;font-weight:600;color:var(--brand-soft);transition:color .2s}
.link-more:hover{color:var(--accent)}

/* ---------- 数据条 ---------- */
.stats-bar{background:var(--bg-2);border-top:1px solid rgba(120,170,255,.1);border-bottom:1px solid rgba(120,170,255,.1)}
.stats-grid{display:grid;grid-template-columns:repeat(2,1fr);gap:1px 0}
@media(min-width:768px){.stats-grid{grid-template-columns:repeat(4,1fr)}}
.stat{padding:30px 18px;text-align:center;position:relative}
.stat+.stat::before{content:"";position:absolute;left:0;top:26%;bottom:26%;width:1px;background:rgba(120,170,255,.16)}
@media(max-width:767px){.stat:nth-child(3)::before{display:none}}
@media(max-width:767px){.stat:nth-child(odd)::before{display:none}}
.stat b{display:block;font-size:clamp(26px,3.2vw,36px);color:#fff;font-variant-numeric:tabular-nums;font-weight:800;letter-spacing:.5px}
.stat span{display:block;margin-top:10px;font-size:13px;color:var(--text-dim)}

/* ---------- 优惠阶梯 ---------- */
.ladder{display:grid;gap:16px}
@media(min-width:768px){.ladder{grid-template-columns:repeat(2,1fr)}}
@media(min-width:1200px){.ladder{grid-template-columns:repeat(4,1fr);align-items:end}}
.tier{position:relative;padding:26px 22px 24px 26px;border-radius:var(--r-card);background:rgba(255,255,255,.04);border:1px solid var(--card-line);box-shadow:var(--shadow-card);transition:transform .3s ease,box-shadow .3s ease,border-color .3s ease}
.tier::before{content:"";position:absolute;left:12px;top:26px;bottom:26px;width:3px;border-radius:3px;background:linear-gradient(180deg,var(--brand),var(--brand-deep));opacity:.5}
.tier-2::before{opacity:.7}
.tier-3::before{opacity:.9}
.tier-4{border-color:rgba(47,107,255,.5);box-shadow:0 0 0 1px rgba(47,107,255,.35),0 22px 46px -20px rgba(47,107,255,.7)}
.tier-4::before{opacity:1;background:linear-gradient(180deg,var(--accent),var(--brand))}
@media(min-width:1200px){
  .tier-1{min-height:300px}
  .tier-2{min-height:330px}
  .tier-3{min-height:360px}
  .tier-4{min-height:396px}
}
.tier:hover{transform:translateY(-6px);border-color:rgba(43,230,192,.4)}
.tier h3{font-size:19px;color:var(--head);font-weight:700}
.tier-desc{margin-top:10px;font-size:14px;color:var(--text-dim);line-height:1.75}
.tier ul{margin-top:18px;display:grid;gap:10px}
.tier li{position:relative;padding-left:18px;font-size:14px;color:var(--text)}
.tier li::before{content:"";position:absolute;left:0;top:10px;width:7px;height:7px;border-radius:2px;background:var(--accent);opacity:.75}
.tier-foot{margin-top:20px;padding-top:14px;border-top:1px dashed rgba(120,170,255,.2);font-size:13px;color:var(--brand-soft)}

/* ---------- 套餐对比 ---------- */
.compare-wrap{background:var(--bg-2);border:1px solid var(--card-line);border-radius:var(--r-card);overflow-x:auto;box-shadow:var(--shadow-card)}
.compare-table{width:100%;min-width:680px;border-collapse:collapse}
.compare-table th,.compare-table td{padding:16px 18px;font-size:15px;text-align:center;border-bottom:1px solid rgba(120,170,255,.1)}
.compare-table thead th{background:rgba(47,107,255,.14);color:var(--head);font-weight:700;vertical-align:bottom;padding-top:22px;padding-bottom:20px}
.compare-table thead th.recommend{background:rgba(47,107,255,.26);position:relative}
.compare-table thead th.recommend::before{content:"推荐";position:absolute;top:0;left:50%;transform:translate(-50%,-50%);background:var(--promo);color:#1B0D00;font-size:11px;font-weight:800;letter-spacing:1px;padding:3px 12px;border-radius:6px;white-space:nowrap}
.compare-table th:first-child,.compare-table td:first-child{text-align:left;position:sticky;left:0;background:var(--bg-2);color:var(--head);font-weight:600;box-shadow:1px 0 0 rgba(120,170,255,.14)}
.compare-table thead th:first-child{background:#14203C}
.compare-table td.recommend{background:rgba(47,107,255,.1)}
.compare-table tbody tr:last-child td{border-bottom:0}
.plan-name{display:block;font-size:20px;color:#fff;font-weight:700}
.plan-note{display:block;margin-top:6px;font-size:12px;color:var(--text-dim);font-weight:400}
.plan-big{display:block;font-size:30px;color:var(--accent);font-variant-numeric:tabular-nums;font-weight:800;line-height:1.2}
.plan-sub{display:block;font-size:12px;color:var(--text-dim);font-weight:400;margin-top:4px}
.tick{color:var(--accent);font-weight:800}
.dash{color:#4C5A7A}

/* ---------- 内容列表 ---------- */
.post-grid{display:grid;gap:22px}
@media(min-width:768px){.post-grid{grid-template-columns:repeat(2,1fr)}}
.post-card{display:flex;flex-direction:column;border-radius:var(--r-card);background:rgba(255,255,255,.04);border:1px solid var(--card-line);overflow:hidden;box-shadow:var(--shadow-card);transition:transform .3s ease,border-color .3s ease,box-shadow .3s ease;opacity:0;transform:translateY(12px)}
.post-card.in-view{opacity:1;transform:translateY(0)}
.post-card:hover{border-color:rgba(43,230,192,.38);box-shadow:0 0 0 1px rgba(43,230,192,.28),0 24px 46px -22px rgba(0,0,0,.9)}
.post-thumb{position:relative;display:block;aspect-ratio:16/9;overflow:hidden}
.post-thumb img{width:100%;height:100%;object-fit:cover;border-radius:0;transition:transform .5s ease}
.post-card:hover .post-thumb img{transform:scale(1.05)}
.post-thumb::after{content:"";position:absolute;inset:0;background:linear-gradient(180deg,rgba(5,7,15,0) 40%,rgba(5,7,15,.78))}
.post-body{padding:20px 22px 22px;display:flex;flex-direction:column;flex:1}
.post-title{display:-webkit-box;-webkit-line-clamp:2;-webkit-box-orient:vertical;overflow:hidden;font-size:18px;line-height:1.5;font-weight:700;color:var(--head);transition:color .2s}
.post-title:hover{color:var(--brand-soft)}
.post-sum{display:-webkit-box;-webkit-line-clamp:2;-webkit-box-orient:vertical;overflow:hidden;margin-top:12px;font-size:14.5px;line-height:1.8;color:var(--text-dim);flex:1}
.post-meta{display:flex;align-items:center;gap:12px;margin-top:18px;padding-top:16px;border-top:1px solid rgba(120,170,255,.12);font-size:13px;color:var(--text-dim)}
.post-meta .post-more{margin-left:auto;color:var(--brand-soft);font-weight:600;transition:color .2s}
.post-meta .post-more:hover{color:var(--accent)}
.empty-state{display:flex;flex-direction:column;align-items:center;justify-content:center;gap:14px;padding:64px 24px;border-radius:var(--r-card);border:1px dashed rgba(120,170,255,.28);background:rgba(255,255,255,.03);text-align:center}
.empty-state svg{width:44px;height:44px;stroke:var(--brand-soft);opacity:.8}
.empty-state p{color:var(--text-dim);font-size:15px}

/* ---------- 限时条 ---------- */
.flash{position:relative;display:grid;gap:22px;padding:28px 26px;border-radius:var(--r-card);background:rgba(255,255,255,.06);backdrop-filter:blur(18px) saturate(140%);-webkit-backdrop-filter:blur(18px) saturate(140%);border:1px solid rgba(255,138,43,.45);box-shadow:0 0 0 1px rgba(255,138,43,.22),0 24px 50px -26px rgba(255,138,43,.6);align-items:center}
@media(min-width:1024px){.flash{grid-template-columns:1.2fr auto auto;gap:32px;padding:26px 32px}}
.flash-copy h3{font-size:20px;color:#fff;font-weight:700}
.flash-copy p{margin-top:8px;font-size:14px;color:var(--text-dim)}
.flash-timer{display:flex;align-items:baseline;gap:6px;font-variant-numeric:tabular-nums;color:var(--promo);font-size:clamp(24px,3vw,32px);font-weight:800;letter-spacing:1px}
.flash-timer small{font-size:13px;color:var(--text-dim);font-weight:500;margin-left:4px;letter-spacing:0}

/* ---------- 表单 ---------- */
.consult-grid{display:grid;gap:30px}
@media(min-width:1024px){.consult-grid{grid-template-columns:5fr 7fr;gap:48px}}
.consult-points{display:grid;gap:18px;margin-top:26px}
.consult-points li{display:flex;gap:14px;font-size:15px;color:var(--text)}
.consult-points li i{flex:none;margin-top:8px;width:8px;height:8px;border-radius:2px;background:var(--accent);box-shadow:0 0 10px rgba(43,230,192,.7)}
.form-card{padding:26px 24px}
@media(min-width:768px){.form-card{padding:32px 30px}}
.form-row{display:grid;gap:16px}
@media(min-width:640px){.form-row.two{grid-template-columns:1fr 1fr}}
.field{display:flex;flex-direction:column;gap:8px}
.field label{font-size:13.5px;color:var(--text-dim)}
.field input,.field select,.field textarea{width:100%;padding:12px 14px;border-radius:10px;background:rgba(255,255,255,.05);border:1px solid rgba(120,170,255,.2);color:var(--head);font-size:15px;outline:none;transition:border-color .2s,box-shadow .2s,background .2s}
.field textarea{min-height:120px;resize:vertical;line-height:1.75}
.field input:focus,.field select:focus,.field textarea:focus{border-color:var(--brand);background:rgba(47,107,255,.1);box-shadow:0 0 0 4px rgba(47,107,255,.18)}
.field select option{background:#101A33;color:#EAF1FF}
.check-row{display:flex;align-items:flex-start;gap:10px;font-size:13.5px;color:var(--text-dim);margin-top:16px}
.check-row input{margin-top:5px;width:16px;height:16px;accent-color:var(--brand)}
.form-submit{width:100%;margin-top:20px;padding:14px;border-radius:var(--r-btn);font-size:16px}
.form-tip{margin-top:14px;font-size:13px;color:var(--text-dim);min-height:20px}
.form-tip.ok{color:var(--accent)}
.form-tip.warn{color:var(--promo)}

/* ---------- FAQ ---------- */
.faq-grid{display:grid;gap:14px}
@media(min-width:1024px){.faq-grid{grid-template-columns:1fr 1fr;gap:16px 24px;align-items:start}}
.faq-item{border:1px solid var(--card-line);border-radius:14px;background:rgba(255,255,255,.04);overflow:hidden;transition:border-color .2s}
.faq-item.open{border-color:rgba(43,230,192,.4)}
.faq-q{position:relative;width:100%;display:flex;align-items:center;justify-content:space-between;gap:16px;min-height:56px;padding:16px 20px;border:0;background:transparent;color:var(--head);font-size:16px;font-weight:600;text-align:left;cursor:pointer;line-height:1.6}
.faq-q::before{content:"";position:absolute;left:0;top:0;bottom:0;width:2px;background:var(--accent);transform:scaleY(0);transform-origin:top;transition:transform .2s ease}
.faq-q[aria-expanded="true"]::before{transform:scaleY(1)}
.faq-icon{position:relative;flex:none;width:16px;height:16px}
.faq-icon::before,.faq-icon::after{content:"";position:absolute;background:var(--brand-soft);border-radius:2px;transition:transform .2s ease,opacity .2s ease}
.faq-icon::before{left:0;right:0;top:7px;height:2px}
.faq-icon::after{top:0;bottom:0;left:7px;width:2px}
.faq-q[aria-expanded="true"] .faq-icon::after{transform:rotate(90deg);opacity:0}
.faq-a{max-height:0;overflow:hidden;transition:max-height .3s ease}
.faq-a p{padding:0 20px 20px;font-size:14.5px;line-height:1.85;color:var(--text-dim)}

/* ---------- 页脚 ---------- */
.site-footer{background:var(--bg-0);border-top:1px solid rgba(120,170,255,.12)}
.footer-grid{display:grid;gap:34px;padding:64px 0 40px}
@media(min-width:640px){.footer-grid{grid-template-columns:1fr 1fr}}
@media(min-width:1024px){.footer-grid{grid-template-columns:1.5fr 1fr 1fr 1.2fr;gap:44px}}
.footer-brand{display:flex;align-items:center;gap:10px;color:#fff;font-size:17px;font-weight:700}
.footer-brand svg{width:24px;height:24px;flex:none}
.footer-about{margin-top:16px;font-size:14px;line-height:1.85;color:var(--text-dim);max-width:42ch}
.footer-col h4{font-size:15px;color:var(--head);font-weight:700;margin-bottom:16px}
.footer-col ul{display:grid;gap:11px}
.footer-col a,.footer-col span{font-size:14px;color:var(--text-dim);transition:color .2s}
.footer-col a:hover{color:var(--accent)}
.footer-bottom{border-top:1px solid rgba(120,170,255,.12);padding:20px 0 28px;display:flex;justify-content:space-between;gap:14px;flex-wrap:wrap;font-size:13px;color:#6C7999}
.footer-bottom a{color:#6C7999}
.footer-bottom a:hover{color:var(--accent)}

/* roulang page: article */
:root{
  --bg-0:#05070F;
  --bg-1:#0A1122;
  --bg-2:#101A33;
  --brand:#2F6BFF;
  --brand-deep:#1740B8;
  --brand-soft:#7FA6FF;
  --accent:#2BE6C0;
  --promo:#FF8A2B;
  --nav-bg:#FFFFFF;
  --nav-text:#0B1226;
  --nav-sub:#5A6683;
  --nav-line:#E6EAF3;
  --text:#C7D2E8;
  --muted:#8A97B4;
  --line:rgba(120,170,255,.16);
  --r-card:18px;
  --r-img:14px;
  --r-btn:12px;
  --shadow-card:0 18px 40px -20px rgba(0,0,0,.8);
  --font-cn:'PingFang SC','HarmonyOS Sans SC','Microsoft YaHei','Source Han Sans SC',system-ui,-apple-system,sans-serif;
}
*,*::before,*::after{box-sizing:border-box}
html{-webkit-text-size-adjust:100%;scroll-behavior:smooth}
body{
  margin:0;
  font-family:var(--font-cn);
  font-size:16px;
  line-height:1.85;
  color:var(--text);
  background:var(--bg-1);
  -webkit-font-smoothing:antialiased;
}
img{display:block;max-width:100%;height:auto}
a{color:inherit;text-decoration:none}
button,input,select,textarea{font:inherit;color:inherit}
h1,h2,h3,h4,p,ul,ol,figure,blockquote{margin:0}
ul,ol{padding:0;list-style:none}
.num{font-variant-numeric:tabular-nums;font-weight:800;letter-spacing:.5px}
.container-x{width:100%;max-width:1200px;margin:0 auto;padding:0 24px}
@media (max-width:640px){.container-x{padding:0 16px}}

/* ---------- 顶栏 ---------- */
.site-header{position:sticky;top:0;z-index:60;background:var(--nav-bg);box-shadow:0 1px 0 var(--nav-line)}
.site-header::after{content:"";display:block;height:2px;background:linear-gradient(90deg,var(--brand),var(--accent))}
.header-inner{display:flex;align-items:center;gap:26px;height:64px}
.brand{display:flex;align-items:center;gap:10px;font-size:18px;font-weight:700;color:var(--nav-text);letter-spacing:.2px;white-space:nowrap}
.brand svg{width:30px;height:30px;flex:0 0 30px}
.nav-links{display:flex;align-items:center;gap:26px}
.nav-links a{position:relative;display:inline-block;padding:6px 0;font-size:16px;color:var(--nav-text);transition:color .2s ease}
.nav-links a::after{content:"";position:absolute;left:0;right:0;bottom:0;height:2px;background:linear-gradient(90deg,var(--brand),var(--accent));transform:scaleX(0);transform-origin:left;transition:transform .22s ease}
.nav-links a:hover{color:var(--brand)}
.nav-links a:hover::after,.nav-links a.active::after{transform:scaleX(1)}
.nav-links a.active{color:var(--brand);font-weight:600}
.header-actions{margin-left:auto;display:flex;align-items:center;gap:12px}
.search-box{display:flex;align-items:center;gap:8px;width:220px;padding:8px 14px;background:#F2F5FB;border:1px solid transparent;border-radius:999px;transition:border-color .2s ease,box-shadow .2s ease}
.search-box:focus-within{border-color:var(--brand);box-shadow:0 0 0 4px rgba(47,107,255,.15)}
.search-box svg{width:16px;height:16px;flex:none;color:var(--nav-sub)}
.search-box input{width:100%;border:0;background:transparent;outline:none;font-size:14px;color:var(--nav-text)}
.search-box input::placeholder{color:var(--nav-sub)}
.nav-toggle{display:none;width:42px;height:42px;align-items:center;justify-content:center;background:#F2F5FB;border:1px solid var(--nav-line);border-radius:10px;cursor:pointer}
.nav-toggle span{display:block;width:18px;height:2px;background:var(--nav-text);position:relative}
.nav-toggle span::before,.nav-toggle span::after{content:"";position:absolute;left:0;width:18px;height:2px;background:var(--nav-text)}
.nav-toggle span::before{top:-6px}
.nav-toggle span::after{top:6px}
.mobile-drawer{display:none;background:#fff;border-top:1px solid var(--nav-line)}
.mobile-drawer.open{display:block}
.mobile-drawer a{display:block;padding:14px 24px;font-size:16px;color:var(--nav-text);border-bottom:1px solid #F1F4FA}
.mobile-drawer a.active{color:var(--brand);font-weight:600}
.mobile-drawer .drawer-cta{padding:16px 24px 22px}
.mobile-drawer .btn{width:100%}
@media (min-width:1025px){.mobile-drawer{display:none!important}}

/* ---------- 按钮 ---------- */
.btn{display:inline-flex;align-items:center;justify-content:center;gap:8px;padding:11px 22px;font-size:15px;font-weight:600;border:1px solid transparent;border-radius:var(--r-btn);cursor:pointer;transition:transform .18s ease,box-shadow .18s ease,background .18s ease,color .18s ease,border-color .18s ease}
.btn-primary{background:linear-gradient(135deg,var(--brand),#1f52d8);color:#fff;box-shadow:0 0 0 1px rgba(47,107,255,.55),0 10px 30px -8px rgba(47,107,255,.6)}
.btn-primary:hover{transform:translateY(-2px);box-shadow:0 0 0 1px rgba(47,107,255,.72),0 16px 34px -8px rgba(47,107,255,.78)}
.btn-primary:active{transform:translateY(1px)}
.btn-ghost{background:transparent;color:#E5ECFF;border-color:rgba(127,166,255,.45)}
.btn-ghost:hover{border-color:var(--accent);color:#fff;box-shadow:0 0 0 1px rgba(43,230,192,.35)}
.btn-ghost:active{transform:translateY(1px)}
.btn-sm{padding:9px 18px;font-size:14px}
.btn-pill{border-radius:999px}
a:focus-visible,button:focus-visible,input:focus-visible{outline:2px solid var(--accent);outline-offset:2px}

/* ---------- 内页头部区 ---------- */
.article-hero{position:relative;overflow:hidden;padding:34px 0 46px;background-image:linear-gradient(180deg,rgba(5,7,15,.80),rgba(5,7,15,.95)),url('/assets/images/backpic/back-1.webp');background-size:cover;background-position:center;border-bottom:1px solid var(--line)}
.article-hero::before{content:"";position:absolute;inset:0;background-image:repeating-linear-gradient(45deg,rgba(120,170,255,.06) 0 1px,transparent 1px 14px);pointer-events:none;opacity:.85}
.article-hero .container-x{position:relative;z-index:2}
.breadcrumb{display:flex;flex-wrap:wrap;align-items:center;gap:8px;font-size:13px;color:var(--muted);margin-bottom:20px}
.breadcrumb a{color:var(--brand-soft);transition:color .2s ease}
.breadcrumb a:hover{color:var(--accent)}
.breadcrumb .sep{color:#4C5878}
.breadcrumb .current{color:var(--text)}
.hero-tag-row{display:flex;flex-wrap:wrap;gap:10px;margin-bottom:16px}
.badge{display:inline-flex;align-items:center;gap:6px;padding:4px 10px;font-size:12px;font-weight:600;border-radius:6px;background:rgba(43,230,192,.10);border:1px solid rgba(43,230,192,.42);color:#9BF3E1;letter-spacing:.3px}
.badge-blue{background:rgba(47,107,255,.14);border-color:rgba(127,166,255,.46);color:#BBD0FF}
.badge-promo{background:rgba(255,138,43,.12);border-color:rgba(255,138,43,.5);color:#FFC392}
.article-title{max-width:920px;font-size:clamp(28px,3.6vw,46px);line-height:1.2;font-weight:800;color:#fff;letter-spacing:.2px;overflow-wrap:anywhere}
.article-summary{max-width:76ch;margin-top:18px;font-size:16px;color:#A9B6D4;overflow-wrap:anywhere}
.article-meta{display:flex;flex-wrap:wrap;align-items:center;gap:10px 14px;margin-top:22px;font-size:13px;color:var(--muted);font-variant-numeric:tabular-nums}
.article-meta .dot{width:4px;height:4px;border-radius:50%;background:#3A4668}
.hero-strip{margin-top:26px;display:flex;flex-wrap:wrap;gap:12px}
.hero-strip .chip{display:inline-flex;align-items:center;gap:8px;padding:8px 14px;font-size:13px;color:#CFDAF5;background:rgba(255,255,255,.06);border:1px solid var(--line);border-radius:999px;backdrop-filter:blur(10px)}

/* ---------- 阅读进度 ---------- */
.read-progress{position:fixed;top:0;left:0;height:2px;width:0;background:linear-gradient(90deg,var(--brand),var(--accent));z-index:80;transition:width .1s linear}

/* ---------- 正文布局 ---------- */
.article-main{padding:clamp(38px,5vw,64px) 0 clamp(48px,6vw,80px);background:var(--bg-1)}
.article-layout{display:grid;grid-template-columns:minmax(0,1fr) 220px;gap:48px;align-items:start;max-width:1120px;margin:0 auto}
.article-shell{max-width:800px;background:transparent}
.article-content{font-size:16px;line-height:1.85;color:var(--text);overflow-wrap:anywhere}
.article-content p{margin:16px 0}
.article-content h2{position:relative;margin:44px 0 20px;padding-left:16px;font-size:clamp(22px,2.4vw,28px);line-height:1.35;font-weight:700;color:#EAF1FF}
.article-content h2::before{content:"";position:absolute;left:0;top:6px;bottom:6px;width:3px;border-radius:2px;background:var(--accent);box-shadow:0 0 12px rgba(43,230,192,.6)}
.article-content h3{margin:28px 0 12px;font-size:20px;line-height:1.4;font-weight:700;color:#E4ECFF}
.article-content h4{margin:22px 0 10px;font-size:17px;font-weight:700;color:#D7E2FA}
.article-content ul,.article-content ol{margin:16px 0;padding-left:22px}
.article-content ul li{position:relative;list-style:none;padding-left:18px;margin:8px 0;line-height:1.9}
.article-content ul li::before{content:"";position:absolute;left:0;top:12px;width:6px;height:6px;border-radius:50%;background:var(--brand-soft)}
.article-content ol{list-style:decimal}
.article-content ol li{margin:8px 0;line-height:1.9}
.article-content a{color:var(--brand-soft);border-bottom:1px solid rgba(127,166,255,.4);transition:color .2s ease,border-color .2s ease}
.article-content a:hover{color:var(--accent);border-color:var(--accent)}
.article-content strong{color:#EFF4FF;font-weight:700}
.article-content img{margin:24px auto;border-radius:var(--r-img);border:1px solid rgba(120,170,255,.14)}
.article-content figure{margin:26px 0}
.article-content figcaption{margin-top:10px;font-size:13px;color:var(--muted);text-align:center}
.article-content blockquote{margin:26px 0;padding:16px 20px;border-left:3px solid var(--brand);background:rgba(47,107,255,.08);border-radius:0 12px 12px 0;color:#D3DDF5}
.article-content blockquote p{margin:6px 0}
.article-content hr{margin:36px 0;border:0;height:1px;background:linear-gradient(90deg,rgba(120,170,255,.35),transparent)}
.article-content code{padding:2px 6px;font-size:14px;background:rgba(255,255,255,.07);border:1px solid var(--line);border-radius:6px;color:#9FF3E0}
.article-content pre{margin:22px 0;padding:16px;overflow-x:auto;background:rgba(255,255,255,.05);border:1px solid var(--line);border-radius:12px}
.article-content table{width:100%;margin:24px 0;border-collapse:collapse;font-size:15px;border:1px solid var(--line);border-radius:12px;overflow:hidden}
.article-content thead th{padding:12px 14px;text-align:left;font-weight:600;color:#EAF1FF;background:rgba(47,107,255,.12)}
.article-content tbody td{padding:12px 14px;border-top:1px solid rgba(120,170,255,.10);vertical-align:top}
.article-content tbody tr:nth-child(even){background:rgba(255,255,255,.03)}

/* ---------- 侧栏目录 ---------- */
.toc{position:sticky;top:92px;padding:18px 16px;background:rgba(255,255,255,.05);border:1px solid var(--line);border-radius:var(--r-card);backdrop-filter:blur(14px) saturate(140%)}
.toc h4{font-size:13px;font-weight:700;color:#E7EEFF;letter-spacing:.6px;margin-bottom:12px}
.toc-list{display:flex;flex-direction:column;gap:2px;max-height:60vh;overflow-y:auto}
.toc-link{display:block;padding:7px 10px;font-size:13px;line-height:1.5;color:var(--muted);border-left:2px solid transparent;transition:color .2s ease,border-color .2s ease,background .2s ease}
.toc-link:hover{color:#D9E3FA;background:rgba(255,255,255,.04)}
.toc-link.current{color:var(--accent);border-left-color:var(--accent);background:rgba(43,230,192,.07)}
.toc-note{margin-top:14px;padding-top:12px;border-top:1px solid var(--line);font-size:12px;color:#6F7C9C;line-height:1.7}

/* ---------- 文章底部动作 ---------- */
.article-actions{display:flex;flex-wrap:wrap;gap:14px;align-items:center;justify-content:space-between;margin-top:44px;padding-top:22px;border-top:1px solid var(--line)}
.back-row{display:flex;flex-wrap:wrap;gap:20px}
.link-arrow{display:inline-flex;align-items:center;gap:6px;font-size:14px;color:var(--brand-soft);transition:color .2s ease,transform .2s ease}
.link-arrow:hover{color:var(--accent);transform:translateX(2px)}
.empty-state{padding:52px 28px;text-align:center;background:rgba(255,255,255,.05);border:1px solid var(--line);border-radius:var(--r-card);backdrop-filter:blur(14px)}
.empty-state h2{font-size:24px;font-weight:700;color:#EAF1FF}
.empty-state p{margin:14px auto 26px;max-width:52ch;font-size:15px;color:var(--muted)}

/* ---------- 相关推荐 ---------- */
.related{padding:clamp(44px,6vw,80px) 0;background:var(--bg-2);border-top:1px solid var(--line);border-bottom:1px solid var(--line)}
.section-head{display:flex;flex-wrap:wrap;align-items:flex-end;justify-content:space-between;gap:14px;margin-bottom:30px}
.section-head h2{font-size:clamp(22px,2.6vw,32px);line-height:1.25;font-weight:700;color:#EAF1FF}
.section-head p{margin-top:10px;font-size:14px;color:var(--muted);max-width:62ch}
.related-grid{display:grid;grid-template-columns:repeat(3,minmax(0,1fr));gap:22px}
.rel-card{display:flex;flex-direction:column;overflow:hidden;background:rgba(255,255,255,.05);border:1px solid var(--line);border-radius:var(--r-card);backdrop-filter:blur(16px) saturate(140%);box-shadow:var(--shadow-card);transition:transform .22s ease,box-shadow .22s ease,border-color .22s ease}
.rel-card:hover{transform:translateY(-4px);border-color:rgba(43,230,192,.4);box-shadow:0 0 0 1px rgba(43,230,192,.3),0 24px 48px -22px rgba(0,0,0,.9)}
.rel-thumb{position:relative;aspect-ratio:16/9;overflow:hidden;background:linear-gradient(135deg,#12203F,#0A1122)}
.rel-thumb img{width:100%;height:100%;object-fit:cover;border-radius:0;transition:transform .35s ease}
.rel-card:hover .rel-thumb img{transform:scale(1.05)}
.rel-thumb::after{content:"";position:absolute;inset:0;background:linear-gradient(180deg,rgba(5,7,15,.05),rgba(5,7,15,.62))}
.rel-body{padding:18px 18px 20px}
.rel-body h3{margin-top:10px;font-size:17px;line-height:1.5;font-weight:700;color:#EAF1FF;display:-webkit-box;-webkit-line-clamp:2;-webkit-box-orient:vertical;overflow:hidden}
.rel-body p{margin-top:10px;font-size:14px;color:var(--muted);line-height:1.7;display:-webkit-box;-webkit-line-clamp:2;-webkit-box-orient:vertical;overflow:hidden}
.rel-foot{display:flex;align-items:center;justify-content:space-between;margin-top:14px;font-size:13px;color:#6F7C9C;font-variant-numeric:tabular-nums}
.rel-foot .more{color:var(--brand-soft)}
.rel-card:hover .rel-foot .more{color:var(--accent)}

/* ---------- 窄 CTA 条 ---------- */
.cta-strip{padding:clamp(34px,4.5vw,56px) 0;background:var(--bg-1)}
.cta-inner{display:flex;flex-wrap:wrap;align-items:center;justify-content:space-between;gap:20px;padding:22px 26px;background:rgba(255,255,255,.06);border:1px solid rgba(255,138,43,.36);border-radius:var(--r-card);backdrop-filter:blur(18px) saturate(140%);box-shadow:0 0 26px -14px rgba(255,138,43,.65)}
.cta-inner p{max-width:64ch;font-size:15px;color:#D6DFF6}
.cta-inner p strong{color:#fff}

/* ---------- 页脚 ---------- */
.site-footer{background:var(--bg-0);border-top:1px solid var(--line);padding:clamp(44px,6vw,72px) 0 26px}
.footer-grid{display:grid;grid-template-columns:1.5fr 1fr 1fr 1fr;gap:34px}
.footer-brand{display:flex;align-items:center;gap:10px;font-size:18px;font-weight:700;color:#EEF3FF}
.footer-brand svg{width:32px;height:32px;flex:none}
.footer-about{margin-top:16px;max-width:38ch;font-size:14px;color:var(--muted);line-height:1.8}
.footer-col h4{margin-bottom:16px;font-size:15px;font-weight:700;color:#E9F0FF}
.footer-col ul{display:flex;flex-direction:column;gap:10px}
.footer-col li{font-size:14px;color:var(--muted)}
.footer-col a{color:var(--muted);transition:color .2s ease}
.footer-col a:hover{color:var(--accent)}
.footer-bottom{display:flex;flex-wrap:wrap;gap:10px 24px;justify-content:space-between;margin-top:38px;padding-top:20px;border-top:1px solid var(--line);font-size:13px;color:#6B7796}

/* ---------- 动效 ---------- */
.reveal{opacity:0;transform:translateY(12px);transition:opacity .32s ease-out,transform .32s ease-out}
.reveal.in{opacity:1;transform:translateY(0)}

/* ---------- 响应式 ---------- */
@media (max-width:1024px){
  .header-inner{gap:16px}
  .nav-links,.search-box{display:none}
  .nav-toggle{display:inline-flex}
  .header-actions{margin-left:auto}
  .article-layout{grid-template-columns:1fr;gap:0}
  .toc{display:none}
  .related-grid{grid-template-columns:repeat(2,minmax(0,1fr))}
  .footer-grid{grid-template-columns:1fr 1fr;gap:28px}
}
@media (max-width:768px){
  .site-header .header-inner{height:56px}
  .brand{font-size:16px}
  .brand svg{width:26px;height:26px}
  .header-cta{display:none}
  .article-content table{display:block;overflow-x:auto;white-space:nowrap}
  .cta-inner{flex-direction:column;align-items:flex-start}
  .cta-inner .btn{width:100%}
}
@media (max-width:520px){
  .related-grid{grid-template-columns:1fr}
  .footer-grid{grid-template-columns:1fr}
  .article-title{font-size:26px}
  .article-meta{font-size:12px}
}

/* roulang page: category1 */
:root{
  --bg-0:#05070F;
  --bg-1:#0A1122;
  --bg-2:#101A33;
  --brand:#2F6BFF;
  --brand-deep:#1740B8;
  --brand-soft:#7FA6FF;
  --accent:#2BE6C0;
  --promo:#FF8A2B;
  --nav-bg:#FFFFFF;
  --nav-text:#0B1226;
  --nav-sub:#5A6683;
  --nav-line:#E6EAF3;
  --text:#C7D2E8;
  --muted:#8A97B4;
  --radius-card:18px;
  --radius-img:14px;
  --radius-btn:12px;
  --radius-input:10px;
  --radius-badge:6px;
  --shadow-card:0 18px 40px -20px rgba(0,0,0,.8);
  --shadow-float:0 26px 54px -24px rgba(0,0,0,.92),0 0 0 1px rgba(43,230,192,.34);
  --gap-section:clamp(56px,7vw,104px);
  --font-cn:'PingFang SC','HarmonyOS Sans SC','Microsoft YaHei','Source Han Sans SC',system-ui,sans-serif;
}
*,*::before,*::after{box-sizing:border-box;}
html{-webkit-text-size-adjust:100%;}
body{
  margin:0;
  font-family:var(--font-cn);
  font-size:16px;
  line-height:1.85;
  color:var(--text);
  background:var(--bg-1);
  overflow-x:hidden;
}
img{max-width:100%;display:block;border-style:none;}
a{color:inherit;text-decoration:none;transition:color .2s ease,border-color .2s ease,opacity .2s ease;}
button,input,select,textarea{font-family:inherit;font-size:inherit;color:inherit;}
button{cursor:pointer;border:none;background:none;}
h1,h2,h3,h4,h5{margin:0;color:#fff;font-weight:700;letter-spacing:.2px;}
p{margin:0;}
ul{margin:0;padding:0;list-style:none;}
.num{font-variant-numeric:tabular-nums;font-feature-settings:"tnum" 1;font-weight:800;letter-spacing:.5px;}
a:focus-visible,button:focus-visible,input:focus-visible{outline:2px solid var(--accent);outline-offset:2px;}

.container-x{max-width:1200px;margin:0 auto;padding:0 24px;}
@media (min-width:1280px){.container-x{max-width:1280px;}}

/* ============ 顶栏 ============ */
.site-header{
  position:sticky;top:0;z-index:60;
  background:var(--nav-bg);
  border-bottom:1px solid var(--nav-line);
}
.site-header::after{
  content:"";display:block;height:2px;
  background:linear-gradient(90deg,var(--brand),var(--accent) 70%,transparent);
}
.header-inner{
  display:flex;align-items:center;gap:26px;
  height:64px;
}
.brand{display:flex;align-items:center;gap:10px;flex-shrink:0;}
.brand svg{width:30px;height:30px;flex-shrink:0;}
.brand span{
  font-size:18px;font-weight:700;color:var(--nav-text);letter-spacing:.4px;white-space:nowrap;
}
.brand:hover span{color:var(--brand);}
.nav-links{display:flex;align-items:center;gap:4px;margin-right:auto;flex-wrap:nowrap;}
.nav-links a{
  position:relative;display:inline-block;
  padding:8px 12px;font-size:16px;color:var(--nav-text);border-radius:8px;
  white-space:nowrap;
}
.nav-links a::after{
  content:"";position:absolute;left:12px;right:12px;bottom:2px;height:2px;border-radius:2px;
  background:linear-gradient(90deg,var(--brand),var(--accent));
  transform:scaleX(0);transform-origin:left;transition:transform .22s ease;
}
.nav-links a:hover{color:var(--brand);}
.nav-links a:hover::after{transform:scaleX(1);}
.nav-links a.active{color:var(--brand);font-weight:700;}
.nav-links a.active::after{transform:scaleX(1);}
.header-actions{display:flex;align-items:center;gap:12px;flex-shrink:0;}
.search-box{
  display:flex;align-items:center;gap:8px;
  width:220px;height:40px;padding:0 14px;
  background:#F2F5FB;border:1px solid #E6EAF3;border-radius:999px;
  transition:border-color .2s ease,box-shadow .2s ease,background .2s ease;
}
.search-box svg{width:16px;height:16px;stroke:var(--nav-sub);flex-shrink:0;}
.search-box input{
  width:100%;border:none;background:transparent;font-size:14px;color:var(--nav-text);outline:none;
}
.search-box input::placeholder{color:#98A2BA;}
.search-box:focus-within{
  background:#fff;border-color:var(--brand);box-shadow:0 0 0 4px rgba(47,107,255,.16);
}
.btn{
  display:inline-flex;align-items:center;justify-content:center;gap:8px;
  padding:11px 22px;border-radius:var(--radius-btn);
  font-size:15px;font-weight:700;line-height:1;letter-spacing:.3px;
  transition:transform .18s ease,box-shadow .22s ease,background .22s ease,color .22s ease,border-color .22s ease;
}
.btn-cta{
  border-radius:999px;color:#fff;
  background:linear-gradient(120deg,var(--brand),var(--brand-deep));
  box-shadow:0 0 0 1px rgba(47,107,255,.55),0 10px 30px -8px rgba(47,107,255,.6);
}
.btn-cta:hover{
  transform:translateY(-2px);
  box-shadow:0 0 0 1px rgba(47,107,255,.7),0 16px 34px -6px rgba(47,107,255,.72);
}
.btn-cta:active{transform:translateY(1px);}
.btn-ghost{
  color:#E8EEFF;border:1px solid rgba(127,166,255,.45);background:rgba(255,255,255,.03);
}
.btn-ghost:hover{border-color:var(--accent);color:var(--accent);transform:translateY(-2px);}
.btn-promo{
  color:#1A0F02;background:linear-gradient(120deg,#FFB067,var(--promo));
  box-shadow:0 12px 28px -12px rgba(255,138,43,.85);
}
.btn-promo:hover{transform:translateY(-2px);box-shadow:0 18px 34px -12px rgba(255,138,43,.95);}
.menu-toggle{
  display:none;width:40px;height:40px;border-radius:10px;
  border:1px solid var(--nav-line);align-items:center;justify-content:center;
}
.menu-toggle span{
  display:block;width:18px;height:2px;background:var(--nav-text);border-radius:2px;position:relative;
}
.menu-toggle span::before,.menu-toggle span::after{
  content:"";position:absolute;left:0;width:18px;height:2px;background:var(--nav-text);border-radius:2px;
}
.menu-toggle span::before{top:-6px;}
.menu-toggle span::after{top:6px;}
.mobile-drawer{
  display:none;background:#fff;border-top:1px solid var(--nav-line);
  padding:12px 24px 20px;
}
.mobile-drawer.open{display:block;}
.mobile-drawer a{
  display:block;padding:12px 4px;font-size:16px;color:var(--nav-text);border-bottom:1px solid #F1F4FA;
}
.mobile-drawer a.active{color:var(--brand);font-weight:700;}
.mobile-drawer .btn{width:100%;margin-top:14px;}

/* ============ 面包屑 ============ */
.breadcrumb{
  padding:20px 0 0;font-size:13px;color:var(--muted);
  display:flex;flex-wrap:wrap;align-items:center;gap:6px;
}
.breadcrumb a{color:var(--brand-soft);}
.breadcrumb a:hover{color:var(--accent);}
.breadcrumb .sep{color:#4C5872;}

/* ============ Hero ============ */
.hero{
  position:relative;overflow:hidden;
  min-height:min(74vh,660px);
  display:flex;align-items:center;
  border-bottom:1px solid rgba(120,170,255,.14);
}
.hero-bg{
  position:absolute;inset:0;
  background-image:url('/assets/images/backpic/back-1.webp');
  background-size:cover;background-position:center;
}
.hero-bg::after{
  content:"";position:absolute;inset:0;
  background:linear-gradient(180deg,rgba(5,7,15,.72),rgba(5,7,15,.94));
}
.hero-grid-lines{
  position:absolute;inset:0;opacity:.5;pointer-events:none;
  background-image:linear-gradient(45deg,rgba(120,170,255,.06) 1px,transparent 1px),
                   linear-gradient(-45deg,rgba(120,170,255,.06) 1px,transparent 1px);
  background-size:56px 56px;
}
.hero-inner{
  position:relative;z-index:2;width:100%;
  padding:clamp(48px,6vw,80px) 0 clamp(36px,5vw,64px);
  display:grid;grid-template-columns:1.15fr .85fr;gap:48px;align-items:center;
}
.eyebrow{
  display:inline-flex;align-items:center;gap:8px;
  padding:6px 12px;border-radius:var(--radius-badge);
  font-size:12px;font-weight:700;letter-spacing:.6px;
  color:var(--accent);background:rgba(43,230,192,.08);
  border:1px solid rgba(43,230,192,.35);
}
.hero-title{
  margin-top:20px;
  font-size:clamp(30px,4.4vw,52px);
  line-height:1.18;font-weight:800;letter-spacing:.5px;
}
.hero-title .hl{
  background:linear-gradient(100deg,var(--brand-soft),var(--accent));
  -webkit-background-clip:text;background-clip:text;color:transparent;
}
.hero-sub{
  margin-top:18px;max-width:52ch;
  font-size:17px;line-height:1.8;color:#A9B6D2;
}
.hero-cta{display:flex;flex-wrap:wrap;gap:14px;margin-top:30px;}
.hero-note{margin-top:16px;font-size:13px;color:var(--muted);}
.day-strip{
  margin-top:32px;display:flex;gap:10px;flex-wrap:wrap;align-items:center;
}
.day-strip .strip-label{font-size:13px;color:var(--muted);margin-right:4px;}
.day-pill{
  padding:8px 16px;border-radius:999px;font-size:13px;font-weight:700;
  color:#BFD0F0;background:rgba(255,255,255,.05);
  border:1px solid rgba(120,170,255,.2);
  transition:all .2s ease;
}
.day-pill:hover{color:#fff;border-color:var(--brand-soft);background:rgba(47,107,255,.16);}
.day-pill.is-on{
  color:#04121F;background:linear-gradient(120deg,var(--accent),#7FE9D6);
  border-color:transparent;
}
.hero-card{
  border-radius:var(--radius-card);padding:26px;
  background:rgba(255,255,255,.06);
  backdrop-filter:blur(18px) saturate(140%);
  -webkit-backdrop-filter:blur(18px) saturate(140%);
  border:1px solid rgba(120,170,255,.18);
  box-shadow:var(--shadow-card);
}
.hero-card-head{display:flex;align-items:center;justify-content:space-between;gap:12px;}
.hero-card-head h3{font-size:17px;}
.live-dot{
  display:inline-flex;align-items:center;gap:6px;font-size:12px;font-weight:700;color:var(--accent);
}
.live-dot i{
  width:7px;height:7px;border-radius:50%;background:var(--accent);
  box-shadow:0 0 0 4px rgba(43,230,192,.16);animation:pulse 2s infinite;
}
@keyframes pulse{
  0%,100%{box-shadow:0 0 0 4px rgba(43,230,192,.16);}
  50%{box-shadow:0 0 0 8px rgba(43,230,192,0);}
}
.hero-stat-list{margin-top:20px;display:grid;gap:14px;}
.hero-stat{
  display:flex;align-items:baseline;justify-content:space-between;gap:12px;
  padding-bottom:12px;border-bottom:1px dashed rgba(120,170,255,.18);
}
.hero-stat:last-child{border-bottom:none;padding-bottom:0;}
.hero-stat .k{font-size:13px;color:var(--muted);}
.hero-stat .v{font-size:22px;color:#fff;line-height:1;}
.hero-stat .v em{font-style:normal;font-size:12px;color:var(--muted);margin-left:4px;font-weight:400;letter-spacing:0;}

/* ============ 通用板块 ============ */
.section{padding:var(--gap-section) 0;}
.section-alt{background:var(--bg-2);}
.section-dark{background:var(--bg-1);}
.section-head{max-width:760px;margin-bottom:clamp(28px,3.4vw,48px);}
.section-head h2{
  font-size:clamp(24px,3vw,34px);line-height:1.25;font-weight:700;
}
.section-head p{margin-top:14px;color:var(--muted);font-size:15px;line-height:1.9;}
.badge{
  display:inline-flex;align-items:center;
  padding:4px 10px;border-radius:var(--radius-badge);
  font-size:12px;font-weight:700;letter-spacing:.4px;
  color:var(--brand-soft);background:rgba(47,107,255,.12);
  border:1px solid rgba(47,107,255,.32);
}
.badge-accent{color:var(--accent);background:rgba(43,230,192,.09);border-color:rgba(43,230,192,.32);}
.badge-promo{color:var(--promo);background:rgba(255,138,43,.1);border-color:rgba(255,138,43,.4);}
.badge-muted{color:var(--muted);background:rgba(255,255,255,.04);border-color:rgba(120,170,255,.18);}

/* ============ 时间轴 ============ */
.timeline{position:relative;}
.tl-group{position:relative;padding-left:38px;margin-bottom:46px;}
.tl-group:last-child{margin-bottom:0;}
.tl-group::before{
  content:"";position:absolute;left:9px;top:26px;bottom:-30px;width:1px;
  background:linear-gradient(180deg,rgba(43,230,192,.55),rgba(120,170,255,.1));
}
.tl-group:last-child::before{display:none;}
.tl-group-head{display:flex;align-items:center;gap:12px;margin-bottom:22px;}
.tl-group-head .node{
  position:absolute;left:2px;width:15px;height:15px;border-radius:50%;
  background:var(--accent);box-shadow:0 0 0 5px rgba(43,230,192,.14);
}
.tl-group-head h3{font-size:19px;}
.tl-group-head .count{font-size:13px;color:var(--muted);font-weight:400;}
.tl-item{
  position:relative;display:grid;grid-template-columns:96px 1fr;gap:20px;
  padding:20px 22px;margin-bottom:14px;
  border-radius:var(--radius-card);
  background:rgba(255,255,255,.035);
  border:1px solid rgba(120,170,255,.13);
  transition:transform .3s ease,box-shadow .3s ease,border-color .3s ease,background .3s ease;
}
.tl-item::before{
  content:"";position:absolute;left:-30px;top:28px;width:9px;height:9px;border-radius:50%;
  background:var(--bg-1);border:2px solid var(--accent);
}
.tl-item:hover{
  transform:translateY(-3px);
  background:rgba(47,107,255,.07);
  border-color:rgba(43,230,192,.42);
  box-shadow:var(--shadow-float);
}
.tl-time{
  font-size:13px;color:var(--accent);line-height:1.6;
  font-variant-numeric:tabular-nums;font-weight:700;letter-spacing:.5px;
}
.tl-time span{display:block;font-size:12px;color:var(--muted);font-weight:400;letter-spacing:0;margin-top:4px;}
.tl-body h4{font-size:17px;line-height:1.5;}
.tl-body p{margin-top:8px;font-size:14.5px;color:#9EABC7;line-height:1.8;}
.tl-tags{display:flex;flex-wrap:wrap;gap:8px;margin-top:12px;}
.tl-item.is-past{opacity:.62;}
.tl-item.is-past .tl-time{color:var(--muted);}
.tl-empty-tip{
  margin-top:8px;font-size:13px;color:var(--muted);
}

/* ============ 维度卡 ============ */
.spot-grid{
  display:grid;grid-template-columns:1.25fr 1fr;gap:24px;align-items:stretch;
}
.glass-card{
  border-radius:var(--radius-card);padding:28px;
  background:rgba(255,255,255,.06);
  backdrop-filter:blur(18px) saturate(140%);
  -webkit-backdrop-filter:blur(18px) saturate(140%);
  border:1px solid rgba(120,170,255,.16);
  box-shadow:var(--shadow-card);
  transition:transform .3s ease,box-shadow .3s ease,border-color .3s ease;
}
.glass-card:hover{transform:translateY(-4px);border-color:rgba(43,230,192,.35);box-shadow:var(--shadow-float);}
.glass-card h3{font-size:20px;line-height:1.45;}
.glass-card p{margin-top:12px;color:#A5B2CD;font-size:15px;}
.mini-list{margin-top:18px;display:grid;gap:12px;}
.mini-list li{
  display:flex;gap:10px;align-items:flex-start;font-size:14.5px;color:#A5B2CD;
}
.mini-list li i{
  flex-shrink:0;width:6px;height:6px;margin-top:9px;border-radius:50%;background:var(--brand);
}
.mini-list li.is-accent i{background:var(--accent);}
.mini-stack{display:grid;gap:18px;}
.mini-card{
  border-radius:var(--radius-card);padding:22px;
  background:linear-gradient(160deg,rgba(16,26,51,.95),rgba(10,17,34,.95));
  border:1px solid rgba(120,170,255,.16);
  transition:transform .3s ease,border-color .3s ease,box-shadow .3s ease;
}
.mini-card:hover{transform:translateY(-4px);border-color:rgba(43,230,192,.36);box-shadow:var(--shadow-float);}
.mini-card h4{font-size:17px;}
.mini-card p{margin-top:8px;font-size:14px;color:var(--muted);}
.mini-card .kpi{
  margin-top:14px;font-size:26px;color:var(--accent);line-height:1;
}

/* ============ 数据条 ============ */
.stat-strip{
  display:grid;grid-template-columns:repeat(4,1fr);
  background:var(--bg-2);border-top:1px solid rgba(120,170,255,.12);
  border-bottom:1px solid rgba(120,170,255,.12);
}
.stat-item{
  padding:34px 26px;text-align:center;position:relative;
}
.stat-item + .stat-item::before{
  content:"";position:absolute;left:0;top:26%;bottom:26%;width:1px;background:rgba(120,170,255,.16);
}
.stat-item .v{
  font-size:clamp(26px,3vw,38px);color:#fff;line-height:1;
  font-variant-numeric:tabular-nums;font-weight:800;letter-spacing:.5px;
}
.stat-item .v em{font-style:normal;font-size:15px;color:var(--accent);margin-left:3px;}
.stat-item .k{margin-top:10px;font-size:13px;color:var(--muted);}

/* ============ 流程 ============ */
.flow-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:22px;}
.flow-step{
  position:relative;padding:26px 24px 28px;
  border-radius:var(--radius-card);
  background:rgba(255,255,255,.035);
  border:1px solid rgba(120,170,255,.13);
  transition:transform .3s ease,border-color .3s ease,box-shadow .3s ease;
}
.flow-step:hover{transform:translateY(-4px);border-color:rgba(43,230,192,.36);box-shadow:var(--shadow-float);}
.flow-step .idx{
  font-size:34px;line-height:1;color:rgba(127,166,255,.35);
  font-variant-numeric:tabular-nums;font-weight:800;letter-spacing:1px;
}
.flow-step h3{margin-top:16px;font-size:18px;}
.flow-step p{margin-top:10px;font-size:14.5px;color:var(--muted);}
.flow-step .tagline{
  margin-top:16px;padding-top:14px;font-size:13px;color:var(--accent);
  border-top:1px dashed rgba(120,170,255,.18);
}

/* ============ FAQ ============ */
.faq-grid{display:grid;grid-template-columns:1fr 1fr;gap:16px 24px;align-items:start;}
.faq-item{
  border-radius:14px;background:rgba(255,255,255,.035);
  border:1px solid rgba(120,170,255,.13);overflow:hidden;
  transition:border-color .25s ease,background .25s ease;
}
.faq-item:hover{border-color:rgba(120,170,255,.3);}
.faq-item.open{border-color:rgba(43,230,192,.4);background:rgba(43,230,192,.045);}
.faq-q{
  width:100%;display:flex;align-items:center;justify-content:space-between;gap:16px;
  padding:18px 20px;text-align:left;font-size:16px;font-weight:700;color:#E9F0FF;
  position:relative;
}
.faq-item.open .faq-q::before{
  content:"";position:absolute;left:0;top:12px;bottom:12px;width:2px;background:var(--accent);border-radius:2px;
}
.faq-q .plus{
  flex-shrink:0;width:22px;height:22px;border-radius:50%;
  border:1px solid rgba(127,166,255,.4);position:relative;
  transition:transform .2s ease,border-color .2s ease,background .2s ease;
}
.faq-q .plus::before,.faq-q .plus::after{
  content:"";position:absolute;left:50%;top:50%;background:var(--brand-soft);transform:translate(-50%,-50%);
}
.faq-q .plus::before{width:10px;height:1.5px;}
.faq-q .plus::after{width:1.5px;height:10px;}
.faq-item.open .faq-q .plus{transform:rotate(90deg);border-color:var(--accent);background:rgba(43,230,192,.12);}
.faq-item.open .faq-q .plus::before,.faq-item.open .faq-q .plus::after{background:var(--accent);}
.faq-a{
  max-height:0;overflow:hidden;transition:max-height .28s ease;
}
.faq-a p{padding:0 20px 20px;font-size:14.5px;color:#A5B2CD;line-height:1.85;}

/* ============ CTA 条 ============ */
.cta-band{
  margin-top:8px;
  border-radius:var(--radius-card);
  padding:26px 30px;
  display:flex;align-items:center;justify-content:space-between;gap:24px;flex-wrap:wrap;
  background:linear-gradient(120deg,rgba(47,107,255,.2),rgba(43,230,192,.1));
  border:1px solid rgba(255,138,43,.4);
  box-shadow:0 18px 44px -26px rgba(255,138,43,.6);
}
.cta-band h3{font-size:20px;}
.cta-band p{margin-top:8px;font-size:14px;color:#B6C3DC;}

/* ============ 图卡 ============ */
.cover-figure{
  margin:0;border-radius:var(--radius-img);overflow:hidden;
  border:1px solid rgba(120,170,255,.14);position:relative;
}
.cover-figure img{width:100%;aspect-ratio:16/9;object-fit:cover;}
.cover-figure figcaption{
  position:absolute;left:0;right:0;bottom:0;padding:14px 18px;font-size:13px;color:#D6E0F5;
  background:linear-gradient(180deg,transparent,rgba(5,7,15,.9));
}

/* ============ 页脚 ============ */
.site-footer{
  background:var(--bg-0);
  border-top:1px solid rgba(120,170,255,.14);
  padding:clamp(44px,5vw,68px) 0 26px;
}
.footer-grid{
  display:grid;grid-template-columns:1.6fr 1fr 1fr 1.1fr;gap:38px;
}
.footer-brand{display:flex;align-items:center;gap:10px;}
.footer-brand svg{width:28px;height:28px;flex-shrink:0;}
.footer-brand span{font-size:17px;font-weight:700;color:#fff;letter-spacing:.4px;}
.footer-about{margin-top:16px;font-size:14px;color:var(--muted);line-height:1.9;max-width:46ch;}
.footer-col h4{font-size:15px;color:#fff;margin-bottom:16px;letter-spacing:.4px;}
.footer-col ul{display:grid;gap:11px;}
.footer-col a,.footer-col span{font-size:14px;color:#9AA7C2;}
.footer-col a:hover{color:var(--accent);}
.footer-bottom{
  margin-top:44px;padding-top:20px;
  border-top:1px solid rgba(120,170,255,.12);
  display:flex;justify-content:space-between;gap:14px;flex-wrap:wrap;
  font-size:13px;color:#7B88A4;
}

/* 入场动效 */
.reveal{opacity:0;transform:translateY(12px);transition:opacity .32s ease-out,transform .32s ease-out;}
.reveal.is-in{opacity:1;transform:none;}

/* 滚动条 */
::-webkit-scrollbar{width:10px;height:10px;}
::-webkit-scrollbar-track{background:var(--bg-0);}
::-webkit-scrollbar-thumb{background:#22304F;border-radius:8px;border:2px solid var(--bg-0);}
::-webkit-scrollbar-thumb:hover{background:#2F4269;}

/* ============ 响应式 ============ */
@media (max-width:1180px){
  .nav-links a{padding:8px 9px;font-size:15px;}
  .search-box{width:170px;}
}
@media (max-width:1024px){
  .nav-links,.search-box{display:none;}
  .menu-toggle{display:flex;}
  .hero-inner{grid-template-columns:1fr;gap:34px;}
  .spot-grid{grid-template-columns:1fr;}
  .faq-grid{grid-template-columns:1fr;}
  .flow-grid{grid-template-columns:1fr 1fr;}
  .footer-grid{grid-template-columns:1fr 1fr;gap:30px;}
}
@media (max-width:768px){
  .header-inner{height:56px;gap:14px;}
  .brand span{font-size:16px;}
  .hero{min-height:auto;}
  .hero-inner{padding-top:44px;}
  .hero-cta .btn{flex:1 1 auto;}
  .stat-strip{grid-template-columns:1fr 1fr;}
  .stat-item + .stat-item::before{display:none;}
  .stat-item{border-top:1px solid rgba(120,170,255,.12);}
  .flow-grid{grid-template-columns:1fr;}
  .tl-item{grid-template-columns:1fr;gap:10px;padding:18px;}
  .tl-item::before{left:-30px;top:24px;}
  .cta-band{padding:22px;flex-direction:column;align-items:flex-start;}
}
@media (max-width:520px){
  .container-x{padding:0 16px;}
  .footer-grid{grid-template-columns:1fr;}
  .stat-strip{grid-template-columns:1fr;}
  .hero-card{padding:20px;}
  .breadcrumb{font-size:12px;}
  .tl-group{padding-left:30px;}
}

/* roulang page: category2 */
:root{
  --bg-0:#05070F;
  --bg-1:#0A1122;
  --bg-2:#101A33;
  --brand:#2F6BFF;
  --brand-deep:#1740B8;
  --brand-soft:#7FA6FF;
  --accent:#2BE6C0;
  --promo:#FF8A2B;
  --nav-bg:#FFFFFF;
  --nav-text:#0B1226;
  --nav-sub:#5A6683;
  --nav-line:#E6EAF3;
  --text:#C7D2E8;
  --text-dim:#8A97B4;
  --line:rgba(120,170,255,.16);
  --radius-card:18px;
  --radius-img:14px;
  --radius-btn:12px;
  --shadow-card:0 18px 40px -20px rgba(0,0,0,.8);
  --container:1200px;
}
*{box-sizing:border-box}
html{scroll-behavior:smooth}
body{
  margin:0;
  font-family:'PingFang SC','HarmonyOS Sans SC','Microsoft YaHei','Source Han Sans SC',system-ui,sans-serif;
  background:var(--bg-1);
  color:var(--text);
  font-size:16px;
  line-height:1.85;
  -webkit-font-smoothing:antialiased;
}
img{max-width:100%;display:block}
a{color:inherit;text-decoration:none}
p{margin:0 0 1em;max-width:76ch}
h1,h2,h3,h4{margin:0;color:#EAF0FF;letter-spacing:.2px}
ul,ol{margin:0;padding:0;list-style:none}
button,input,select,textarea{font:inherit;color:inherit}
.num{font-variant-numeric:tabular-nums;font-weight:800;letter-spacing:.5px}
:focus-visible{outline:2px solid var(--accent);outline-offset:2px}
.container-x{max-width:var(--container);margin:0 auto;padding:0 24px}

/* ============ 顶栏 ============ */
.site-header{
  position:sticky;top:0;z-index:60;
  background:var(--nav-bg);
  border-bottom:1px solid var(--nav-line);
  box-shadow:0 8px 26px -22px rgba(11,18,38,.55);
}
.site-header::after{
  content:"";display:block;height:2px;
  background:linear-gradient(90deg,var(--brand),var(--accent));
}
.header-inner{height:64px;display:flex;align-items:center;gap:22px}
.brand{display:flex;align-items:center;gap:10px;color:var(--nav-text);font-weight:700;font-size:17px;white-space:nowrap}
.brand svg{width:30px;height:30px;flex:0 0 auto}
.nav-links{display:flex;align-items:center;gap:26px;margin-left:10px;margin-right:auto}
.nav-links a{
  position:relative;padding:6px 0;font-size:16px;color:var(--nav-text);
  transition:color .22s ease;white-space:nowrap;
}
.nav-links a::after{
  content:"";position:absolute;left:0;right:0;bottom:0;height:2px;
  background:linear-gradient(90deg,var(--brand),var(--accent));
  transform:scaleX(0);transform-origin:left;transition:transform .24s ease;
}
.nav-links a:hover{color:var(--brand)}
.nav-links a:hover::after,.nav-links a.active::after{transform:scaleX(1)}
.nav-links a.active{color:var(--brand);font-weight:600}
.header-tools{display:flex;align-items:center;gap:12px}
.search-box input{
  width:220px;height:38px;border-radius:999px;background:#F2F5FB;
  border:1px solid var(--nav-line);padding:0 16px;color:var(--nav-text);
  font-size:14px;outline:none;transition:box-shadow .22s,border-color .22s,background .22s;
}
.search-box input::placeholder{color:var(--nav-sub)}
.search-box input:focus{border-color:var(--brand);background:#fff;box-shadow:0 0 0 4px rgba(47,107,255,.18)}
.btn-primary{
  display:inline-flex;align-items:center;justify-content:center;gap:8px;
  border-radius:999px;padding:11px 22px;font-weight:600;font-size:15px;color:#fff;
  background:linear-gradient(135deg,var(--brand),var(--brand-deep));
  box-shadow:0 0 0 1px rgba(47,107,255,.55),0 10px 30px -8px rgba(47,107,255,.6);
  transition:transform .22s ease,box-shadow .22s ease,filter .22s ease;
}
.btn-primary:hover{transform:translateY(-2px);filter:brightness(1.06);box-shadow:0 0 0 1px rgba(43,230,192,.5),0 16px 36px -10px rgba(47,107,255,.75)}
.btn-primary:active{transform:translateY(0);box-shadow:0 0 0 1px rgba(47,107,255,.55),0 6px 18px -8px rgba(47,107,255,.6)}
.btn-ghost{
  display:inline-flex;align-items:center;justify-content:center;gap:8px;
  border-radius:999px;padding:11px 22px;font-weight:600;font-size:15px;
  color:#DCE5FA;border:1px solid rgba(127,166,255,.5);background:rgba(255,255,255,.04);
  transition:border-color .22s,color .22s,background .22s,transform .22s;
}
.btn-ghost:hover{border-color:var(--accent);color:#fff;background:rgba(43,230,192,.08);transform:translateY(-2px)}
.btn-ghost:active{transform:translateY(0)}
.btn-sm{padding:9px 18px;font-size:14px}
.nav-toggle{
  display:none;width:40px;height:40px;border-radius:10px;border:1px solid var(--nav-line);
  background:#F2F5FB;align-items:center;justify-content:center;cursor:pointer;
}
.nav-toggle span{display:block;width:18px;height:2px;background:var(--nav-text);position:relative}
.nav-toggle span::before,.nav-toggle span::after{
  content:"";position:absolute;left:0;width:18px;height:2px;background:var(--nav-text);
}
.nav-toggle span::before{top:-6px}
.nav-toggle span::after{top:6px}
.mobile-drawer{display:none;border-top:1px solid var(--nav-line);background:#fff;padding:12px 24px 20px}
.mobile-drawer.open{display:block}
.mobile-drawer a{
  display:block;padding:12px 4px;color:var(--nav-text);font-size:16px;
  border-bottom:1px solid var(--nav-line);
}
.mobile-drawer a:last-of-type{border-bottom:0}
.mobile-drawer .btn-primary{width:100%;margin-top:14px}

/* ============ 面包屑 ============ */
.crumb-bar{border-bottom:1px solid var(--line);background:var(--bg-2)}
.crumb-inner{display:flex;align-items:center;justify-content:space-between;gap:16px;padding:14px 0;flex-wrap:wrap}
.crumb{font-size:13px;color:var(--text-dim);display:flex;align-items:center;gap:8px;flex-wrap:wrap}
.crumb a{color:var(--brand-soft)}
.crumb a:hover{color:var(--accent)}
.crumb .sep{color:#556180}
.anchor-row{display:flex;gap:10px;flex-wrap:wrap}
.anchor-row a{
  font-size:13px;padding:5px 12px;border-radius:999px;color:var(--text-dim);
  border:1px solid var(--line);background:rgba(255,255,255,.03);transition:.22s;
}
.anchor-row a:hover{color:var(--accent);border-color:rgba(43,230,192,.45)}

/* ============ Hero 分屏 ============ */
.hero{
  position:relative;overflow:hidden;
  background-image:linear-gradient(180deg,rgba(5,7,15,.74),rgba(5,7,15,.95)),
    url("/assets/images/backpic/back-1.webp");
  background-size:cover;background-position:center;
}
.hero::before{
  content:"";position:absolute;inset:0;pointer-events:none;
  background-image:linear-gradient(45deg,rgba(120,170,255,.06) 1px,transparent 1px);
  background-size:22px 22px;opacity:.6;
}
.hero-grid{
  position:relative;display:grid;grid-template-columns:1.05fr .95fr;
  gap:52px;align-items:center;padding:clamp(46px,6vw,88px) 0;
}
.eyebrow{display:flex;gap:10px;flex-wrap:wrap;margin-bottom:20px}
.badge{
  display:inline-flex;align-items:center;gap:6px;font-size:12px;line-height:1.4;
  padding:4px 10px;border-radius:6px;border:1px solid rgba(43,230,192,.45);
  color:var(--accent);background:rgba(43,230,192,.08);white-space:nowrap;
}
.badge-promo{border-color:rgba(255,138,43,.5);color:var(--promo);background:rgba(255,138,43,.1)}
.badge-blue{border-color:rgba(127,166,255,.45);color:var(--brand-soft);background:rgba(47,107,255,.1)}
.hero h1{
  font-size:clamp(30px,4.4vw,52px);line-height:1.18;font-weight:800;letter-spacing:.5px;
  color:#fff;margin-bottom:18px;
}
.hero-sub{font-size:17px;color:#A9B7D6;margin-bottom:26px;max-width:34ch}
.hero-cta{display:flex;gap:14px;flex-wrap:wrap;margin-bottom:18px}
.hero-note{font-size:13px;color:var(--text-dim)}
.hero-media{position:relative}
.hero-media .frame{
  position:relative;border-radius:var(--radius-card);overflow:hidden;
  clip-path:polygon(11% 0,100% 0,100% 100%,0 100%);
  border:1px solid var(--line);box-shadow:var(--shadow-card);
}
.hero-media img{width:100%;aspect-ratio:16/11;object-fit:cover}
.hero-media .frame::after{
  content:"";position:absolute;inset:0;
  background:linear-gradient(200deg,rgba(47,107,255,.22),rgba(5,7,15,.55));
}
.hero-float{
  position:absolute;right:16px;bottom:-18px;width:min(300px,86%);
  padding:16px 18px;border-radius:16px;
}
.hero-float strong{display:block;color:#fff;font-size:16px;margin:8px 0 4px}
.hero-float p{font-size:13px;color:var(--text-dim);margin:0;line-height:1.6}
.countdown{display:flex;align-items:center;gap:10px;margin-top:12px;flex-wrap:wrap}
.cd-label{font-size:13px;color:var(--text-dim)}
.cd-time{color:var(--promo);font-size:20px}

/* ============ 通用板块 ============ */
.section{padding:clamp(56px,7vw,104px) 0}
.section-alt{background:var(--bg-2);border-top:1px solid var(--line);border-bottom:1px solid var(--line)}
.section-head{max-width:760px;margin-bottom:40px}
.section-head h2{font-size:clamp(24px,3vw,34px);line-height:1.25;font-weight:700;margin-bottom:14px}
.section-head p{color:var(--text-dim);font-size:15.5px}
.kicker{display:inline-block;font-size:12px;letter-spacing:2px;color:var(--accent);margin-bottom:12px;text-transform:uppercase}
.glass-card{
  background:rgba(255,255,255,.06);
  backdrop-filter:blur(18px) saturate(140%);
  -webkit-backdrop-filter:blur(18px) saturate(140%);
  border:1px solid var(--line);border-radius:var(--radius-card);
  box-shadow:var(--shadow-card);
  transition:transform .3s ease,box-shadow .3s ease,border-color .3s ease;
}
.glass-card:hover{transform:translateY(-3px);box-shadow:var(--shadow-card),0 0 0 1px rgba(43,230,192,.35);border-color:rgba(43,230,192,.3)}

/* 活动卡片区：两列不等高 */
.offer-grid{display:grid;grid-template-columns:1.22fr 1fr;gap:24px;align-items:stretch}
.offer-side{display:grid;gap:24px;grid-template-rows:1fr 1fr}
.offer-card{overflow:hidden;display:flex;flex-direction:column}
.offer-card .pic{position:relative;overflow:hidden;border-radius:var(--radius-img);margin:14px 14px 0}
.offer-card .pic img{width:100%;aspect-ratio:16/9;object-fit:cover}
.offer-card .pic::after{
  content:"";position:absolute;inset:0;
  background:linear-gradient(180deg,rgba(5,7,15,.15),rgba(5,7,15,.82));
}
.offer-card .pic .tagline{
  position:absolute;left:14px;bottom:12px;z-index:2;display:flex;gap:8px;flex-wrap:wrap;
}
.offer-body{padding:20px 22px 24px}
.offer-body h3{font-size:20px;margin-bottom:10px}
.offer-body p{font-size:15px;color:var(--text-dim);margin-bottom:14px}
.tick-list{display:grid;gap:10px}
.tick-list li{position:relative;padding-left:20px;font-size:14.5px;color:#B6C3DE}
.tick-list li::before{
  content:"";position:absolute;left:0;top:.68em;width:8px;height:8px;border-radius:3px;
  background:linear-gradient(135deg,var(--accent),var(--brand));transform:rotate(45deg);
}
.mini-card{padding:20px 22px;display:flex;flex-direction:column;gap:12px}
.mini-card h3{font-size:18px}
.mini-card p{font-size:14.5px;color:var(--text-dim);margin:0}
.mini-meta{display:flex;justify-content:space-between;align-items:center;gap:12px;font-size:13px;color:var(--text-dim);border-top:1px dashed var(--line);padding-top:12px;margin-top:auto}

/* 权益阶梯 */
.tier-list{display:grid;grid-template-columns:repeat(4,1fr);gap:20px}
.tier{
  position:relative;overflow:hidden;padding:30px 24px 26px 28px;border-radius:var(--radius-card);
  background:linear-gradient(180deg,rgba(16,26,51,.92),rgba(10,17,34,.94));
  border:1px solid var(--line);transition:transform .3s ease,box-shadow .3s ease;
}
.tier::before{
  content:"";position:absolute;left:0;top:0;width:3px;height:34%;
  background:linear-gradient(180deg,var(--brand),var(--accent));opacity:.5;
}
.tier:nth-child(2)::before{height:54%;opacity:.7}
.tier:nth-child(3)::before{height:76%;opacity:.9}
.tier:nth-child(4)::before{height:100%;opacity:1}
.tier:hover{transform:translateY(-4px);box-shadow:var(--shadow-card),0 0 0 1px rgba(43,230,192,.3)}
.tier-name{font-size:13px;color:var(--text-dim);letter-spacing:1px}
.tier h3{font-size:20px;margin:8px 0 6px}
.tier .rate{font-size:30px;color:#fff;margin-bottom:4px}
.tier .rate small{font-size:14px;color:var(--text-dim);font-weight:400;margin-left:4px}
.tier ul{margin:16px 0 18px;display:grid;gap:9px}
.tier ul li{font-size:14px;color:#B6C3DE;padding-left:16px;position:relative}
.tier ul li::before{content:"";position:absolute;left:0;top:.72em;width:6px;height:6px;border-radius:50%;background:var(--accent);opacity:.8}
.tier .gate{font-size:13px;color:var(--text-dim);border-top:1px dashed var(--line);padding-top:12px}
.tier.hot{border-color:rgba(255,138,43,.42);box-shadow:0 0 0 1px rgba(255,138,43,.32),0 22px 48px -26px rgba(255,138,43,.65)}
.tier.hot .ribbon{
  position:absolute;right:14px;top:14px;font-size:12px;padding:3px 9px;border-radius:6px;
  color:var(--promo);border:1px solid rgba(255,138,43,.5);background:rgba(255,138,43,.12);
}

/* 流程 */
.flow{display:grid;grid-template-columns:repeat(5,1fr);gap:18px}
.flow-item{
  position:relative;padding:22px 20px;border-radius:16px;background:rgba(255,255,255,.04);
  border:1px solid var(--line);transition:border-color .25s,transform .25s;
}
.flow-item:hover{border-color:rgba(43,230,192,.4);transform:translateY(-3px)}
.flow-item .idx{font-size:26px;color:var(--brand-soft);margin-bottom:12px}
.flow-item h3{font-size:16px;margin-bottom:8px}
.flow-item p{font-size:13.5px;color:var(--text-dim);margin:0}
.race-line{height:1px;background:linear-gradient(90deg,rgba(47,107,255,.6),rgba(43,230,192,.5),transparent);margin:38px 0 0}

/* 数据条 */
.stats{display:grid;grid-template-columns:repeat(4,1fr);border-radius:var(--radius-card);overflow:hidden;border:1px solid var(--line);background:rgba(255,255,255,.03)}
.stat{padding:26px 22px;border-right:1px solid var(--line)}
.stat:last-child{border-right:0}
.stat .v{font-size:30px;color:#fff;line-height:1.2}
.stat .k{font-size:13px;color:var(--text-dim);margin-top:6px}

/* FAQ */
.faq-grid{display:grid;grid-template-columns:1fr 1fr;gap:0 24px;align-items:start}
.faq-item{
  position:relative;border:1px solid var(--line);border-radius:14px;
  background:rgba(255,255,255,.04);margin-bottom:16px;overflow:hidden;transition:border-color .22s;
}
.faq-item summary{
  list-style:none;cursor:pointer;display:flex;align-items:center;
  min-height:56px;padding:16px 56px 16px 22px;font-size:17px;font-weight:600;color:#E4EBFA;
}
.faq-item summary::-webkit-details-marker{display:none}
.faq-item summary::after{
  content:"+";position:absolute;right:22px;top:16px;font-size:20px;line-height:1.4;
  color:var(--brand-soft);transition:transform .2s ease,color .2s ease;
}
.faq-item[open]{border-color:rgba(43,230,192,.35);background:rgba(43,230,192,.05)}
.faq-item[open] summary::after{transform:rotate(90deg);color:var(--accent)}
.faq-item[open]::before{content:"";position:absolute;left:0;top:0;bottom:0;width:2px;background:var(--accent)}
.faq-answer{padding:0 24px 20px 22px;font-size:14.5px;color:var(--text-dim);margin:0}

/* 表单 */
.consult-wrap{border-radius:22px;border:1px solid var(--line);background:rgba(255,255,255,.05);padding:clamp(24px,3vw,40px);box-shadow:var(--shadow-card)}
.consult-grid{display:grid;grid-template-columns:5fr 7fr;gap:36px}
.consult-points h3{font-size:20px;margin-bottom:16px}
.consult-points ul{display:grid;gap:12px;margin-bottom:22px}
.consult-points li{font-size:14.5px;color:#B6C3DE;padding-left:20px;position:relative}
.consult-points li::before{
  content:"";position:absolute;left:0;top:.66em;width:9px;height:9px;border-radius:3px;
  background:linear-gradient(135deg,var(--brand),var(--accent));
}
.form-row{display:grid;grid-template-columns:1fr 1fr;gap:16px}
.field{display:flex;flex-direction:column;gap:8px;margin-bottom:16px}
.field label{font-size:13.5px;color:#B6C3DE}
.field input,.field select,.field textarea{
  background:rgba(255,255,255,.05);border:1px solid var(--line);border-radius:10px;
  padding:12px 14px;font-size:14.5px;color:#EAF0FF;outline:none;
  transition:border-color .22s,box-shadow .22s,background .22s;
}
.field select option{color:#0B1226}
.field input::placeholder,.field textarea::placeholder{color:#6C7899}
.field input:focus,.field select:focus,.field textarea:focus{
  border-color:var(--brand);background:rgba(47,107,255,.08);
  box-shadow:0 0 0 4px rgba(47,107,255,.18);
}
.check{display:flex;gap:10px;align-items:flex-start;font-size:13.5px;color:var(--text-dim);margin:4px 0 18px}
.check input{width:16px;height:16px;margin-top:3px;accent-color:#2F6BFF}
.form-btn{width:100%;border:0;cursor:pointer}
.form-tip{font-size:13px;color:var(--text-dim);margin-top:12px}

/* CTA 条 */
.cta-bar{
  border-radius:20px;border:1px solid rgba(255,138,43,.4);
  background:linear-gradient(120deg,rgba(255,138,43,.12),rgba(47,107,255,.12));
  box-shadow:0 0 0 1px rgba(255,138,43,.18),0 22px 50px -30px rgba(255,138,43,.7);
  padding:26px 30px;display:flex;align-items:center;justify-content:space-between;gap:20px;flex-wrap:wrap;
}
.cta-bar strong{display:block;font-size:19px;color:#fff;margin-bottom:6px}
.cta-bar span{font-size:14px;color:var(--text-dim)}
.cta-bar .btn-primary{background:linear-gradient(135deg,#FF8A2B,#E4661A);box-shadow:0 0 0 1px rgba(255,138,43,.55),0 12px 30px -10px rgba(255,138,43,.7)}
.cta-bar .btn-primary:hover{box-shadow:0 0 0 1px rgba(255,138,43,.8),0 18px 38px -12px rgba(255,138,43,.85)}

/* ============ 页脚 ============ */
.site-footer{background:var(--bg-0);border-top:1px solid var(--line);padding:56px 0 26px;color:var(--text-dim)}
.footer-grid{display:grid;grid-template-columns:1.5fr 1fr 1fr 1fr;gap:34px}
.footer-brand{display:flex;align-items:center;gap:10px;color:#fff;font-weight:700;font-size:17px;margin-bottom:14px}
.footer-brand svg{width:30px;height:30px}
.footer-about{font-size:14px;line-height:1.8;max-width:36ch;margin:0}
.footer-col h4{color:#E4EBFA;font-size:15px;margin-bottom:14px;font-weight:600}
.footer-col ul{display:grid;gap:10px;font-size:14px}
.footer-col a{transition:color .2s}
.footer-col a:hover{color:var(--accent)}
.footer-bottom{
  margin-top:38px;padding-top:20px;border-top:1px solid var(--line);
  display:flex;justify-content:space-between;gap:12px;flex-wrap:wrap;font-size:13px;
}

/* ============ 响应式 ============ */
@media (max-width:1024px){
  .nav-links{display:none}
  .search-box{display:none}
  .nav-toggle{display:flex}
  .hero-grid{grid-template-columns:1fr;gap:44px}
  .hero-media .frame{clip-path:none;border-radius:var(--radius-card)}
  .hero-float{position:static;width:100%;margin-top:18px}
  .offer-grid{grid-template-columns:1fr}
  .tier-list{grid-template-columns:repeat(2,1fr)}
  .flow{grid-template-columns:repeat(2,1fr)}
  .stats{grid-template-columns:repeat(2,1fr)}
  .stat:nth-child(2){border-right:0}
  .stat:nth-child(1),.stat:nth-child(2){border-bottom:1px solid var(--line)}
  .consult-grid{grid-template-columns:1fr;gap:26px}
  .footer-grid{grid-template-columns:1fr 1fr}
}
@media (max-width:768px){
  .container-x{padding:0 18px}
  .hero h1{font-size:clamp(27px,7vw,36px)}
  .faq-grid{grid-template-columns:1fr}
  .form-row{grid-template-columns:1fr}
  .tier-list{grid-template-columns:1fr}
  .flow{grid-template-columns:1fr}
  .stats{grid-template-columns:1fr}
  .stat{border-right:0;border-bottom:1px solid var(--line)}
  .stat:last-child{border-bottom:0}
  .cta-bar{padding:22px 20px}
}
@media (max-width:520px){
  .header-inner{height:56px;gap:12px}
  .brand{font-size:15.5px}
  .hero-cta{flex-direction:column;align-items:stretch}
  .hero-cta .btn-primary,.hero-cta .btn-ghost{width:100%}
  .footer-grid{grid-template-columns:1fr}
  .crumb-inner{padding:12px 0}
}

/* roulang page: category4 */
:root{
  --bg-0:#05070F;
  --bg-1:#0A1122;
  --bg-2:#101A33;
  --brand:#2F6BFF;
  --brand-deep:#1740B8;
  --brand-soft:#7FA6FF;
  --accent:#2BE6C0;
  --promo:#FF8A2B;
  --nav-bg:#FFFFFF;
  --nav-text:#0B1226;
  --nav-sub:#5A6683;
  --nav-line:#E6EAF3;
  --text:#C7D2E8;
  --muted:#8A97B4;
  --line:rgba(120,170,255,.16);
  --line-soft:rgba(120,170,255,.10);
  --radius-card:18px;
  --radius-img:14px;
  --radius-btn:12px;
  --shadow-card:0 18px 40px -20px rgba(0,0,0,.8);
  --shadow-hover:0 24px 52px -22px rgba(0,0,0,.9),0 0 0 1px rgba(43,230,192,.35);
  --container:1200px;
}
*,*::before,*::after{box-sizing:border-box;}
html{-webkit-text-size-adjust:100%;scroll-behavior:smooth;}
body{
  margin:0;
  background:var(--bg-1);
  color:var(--text);
  font-family:'PingFang SC','HarmonyOS Sans SC','Microsoft YaHei','Source Han Sans SC',system-ui,-apple-system,sans-serif;
  font-size:16px;
  line-height:1.85;
  -webkit-font-smoothing:antialiased;
}
img{max-width:100%;display:block;}
a{color:inherit;text-decoration:none;}
button,input,select,textarea{font:inherit;color:inherit;}
h1,h2,h3,h4{margin:0;color:#EAF1FF;letter-spacing:.2px;}
p{margin:0;}
ul{margin:0;padding:0;list-style:none;}
.num{font-variant-numeric:tabular-nums;font-weight:800;letter-spacing:.5px;}
:focus-visible{outline:2px solid var(--accent);outline-offset:3px;border-radius:6px;}
::selection{background:rgba(47,107,255,.4);color:#fff;}

.container-x{width:100%;max-width:var(--container);margin:0 auto;padding:0 24px;}
.section{padding:clamp(56px,7vw,96px) 0;}
.section-alt{background:var(--bg-2);}
.section-dark{background:var(--bg-0);}

/* ---------- header ---------- */
.site-header{
  position:sticky;top:0;z-index:60;background:var(--nav-bg);
  border-bottom:1px solid var(--nav-line);
}
.site-header::after{
  content:"";display:block;height:2px;
  background:linear-gradient(90deg,var(--brand),var(--accent));
  opacity:.85;
}
.header-inner{
  display:flex;align-items:center;gap:28px;min-height:64px;
}
.brand{
  display:flex;align-items:center;gap:10px;flex:0 0 auto;
  font-weight:700;font-size:17px;color:var(--nav-text);letter-spacing:.2px;
}
.brand svg{width:30px;height:30px;display:block;}
.nav-links{display:flex;align-items:center;gap:26px;margin-left:6px;}
.nav-links a{
  position:relative;font-size:16px;color:var(--nav-text);padding:6px 0;
  transition:color .2s ease;
}
.nav-links a::after{
  content:"";position:absolute;left:0;right:0;bottom:-4px;height:2px;border-radius:2px;
  background:linear-gradient(90deg,var(--brand),var(--accent));
  transform:scaleX(0);transform-origin:left;transition:transform .22s ease;
}
.nav-links a:hover{color:var(--brand);}
.nav-links a:hover::after{transform:scaleX(1);}
.nav-links a.active{color:var(--brand);font-weight:600;}
.nav-links a.active::after{transform:scaleX(1);}
.header-actions{margin-left:auto;display:flex;align-items:center;gap:14px;}
.nav-search{position:relative;}
.nav-search input{
  width:210px;height:38px;border-radius:999px;border:1px solid var(--nav-line);
  background:#F2F5FB;padding:0 16px;font-size:14px;color:var(--nav-text);
  transition:border-color .2s ease,box-shadow .2s ease,background .2s ease;
}
.nav-search input::placeholder{color:var(--nav-sub);}
.nav-search input:focus{
  outline:none;background:#fff;border-color:var(--brand);
  box-shadow:0 0 0 4px rgba(47,107,255,.18);
}
.btn-cta{
  display:inline-flex;align-items:center;justify-content:center;
  height:40px;padding:0 22px;border-radius:999px;
  background:linear-gradient(135deg,var(--brand),var(--brand-deep));
  color:#fff;font-size:15px;font-weight:600;white-space:nowrap;
  box-shadow:0 0 0 1px rgba(47,107,255,.55),0 10px 30px -8px rgba(47,107,255,.6);
  transition:box-shadow .22s ease,transform .18s ease,filter .2s ease;
}
.btn-cta:hover{transform:translateY(-2px);filter:brightness(1.08);box-shadow:0 0 0 1px rgba(47,107,255,.7),0 16px 38px -6px rgba(47,107,255,.75);}
.btn-cta:active{transform:translateY(0);}
.btn-ghost{
  display:inline-flex;align-items:center;justify-content:center;
  height:44px;padding:0 24px;border-radius:var(--radius-btn);
  border:1px solid rgba(127,166,255,.5);color:#EAF1FF;background:rgba(255,255,255,.04);
  font-weight:600;transition:border-color .2s ease,background .2s ease,transform .18s ease;
}
.btn-ghost:hover{border-color:var(--accent);background:rgba(43,230,192,.08);transform:translateY(-2px);}
.btn-promo{
  display:inline-flex;align-items:center;justify-content:center;
  height:44px;padding:0 26px;border-radius:var(--radius-btn);
  border:1px solid rgba(255,138,43,.65);background:rgba(255,138,43,.10);
  color:#FFD8B4;font-weight:600;transition:background .2s ease,border-color .2s ease,transform .18s ease;
}
.btn-promo:hover{background:rgba(255,138,43,.18);transform:translateY(-2px);}
.nav-toggle{
  display:none;width:42px;height:38px;border-radius:10px;border:1px solid var(--nav-line);
  background:#F2F5FB;cursor:pointer;align-items:center;justify-content:center;flex-direction:column;gap:4px;
}
.nav-toggle span{display:block;width:18px;height:2px;background:var(--nav-text);border-radius:2px;transition:transform .2s ease,opacity .2s ease;}
.nav-toggle[aria-expanded="true"] span:nth-child(1){transform:translateY(6px) rotate(45deg);}
.nav-toggle[aria-expanded="true"] span:nth-child(2){opacity:0;}
.nav-toggle[aria-expanded="true"] span:nth-child(3){transform:translateY(-6px) rotate(-45deg);}
.mobile-drawer{display:none;background:#fff;border-top:1px solid var(--nav-line);padding:10px 0 18px;}
.mobile-drawer.open{display:block;}
.mobile-drawer a{
  display:block;padding:13px 4px;color:var(--nav-text);font-size:16px;
  border-bottom:1px solid var(--nav-line);
}
.mobile-drawer a.active{color:var(--brand);font-weight:600;}
.mobile-drawer .drawer-cta{margin-top:14px;}
.mobile-drawer .btn-cta{width:100%;height:46px;}

/* ---------- breadcrumb ---------- */
.crumb{padding:18px 0 0;font-size:13px;color:var(--muted);}
.crumb a{color:var(--brand-soft);transition:color .2s ease;}
.crumb a:hover{color:var(--accent);}
.crumb span.sep{margin:0 8px;color:#4E5B7A;}

/* ---------- hero ---------- */
.hero{
  position:relative;margin-top:22px;border-radius:22px;overflow:hidden;
  border:1px solid var(--line);
  background-image:linear-gradient(180deg,rgba(5,7,15,.72),rgba(5,7,15,.94)),url('/assets/images/backpic/back-1.webp');
  background-size:cover;background-position:center;
}
.hero::before{
  content:"";position:absolute;inset:0;
  background-image:linear-gradient(rgba(120,170,255,.06) 1px,transparent 1px),linear-gradient(90deg,rgba(120,170,255,.06) 1px,transparent 1px);
  background-size:48px 48px;
  mask-image:linear-gradient(180deg,rgba(0,0,0,.9),transparent 78%);
  -webkit-mask-image:linear-gradient(180deg,rgba(0,0,0,.9),transparent 78%);
  pointer-events:none;
}
.hero-inner{position:relative;padding:clamp(36px,5vw,64px);}
.hero-tag{
  display:inline-flex;align-items:center;gap:8px;
  padding:6px 14px;border-radius:6px;font-size:12px;letter-spacing:.4px;
  border:1px solid rgba(43,230,192,.55);background:rgba(43,230,192,.10);color:#A6F6E5;
}
.hero h1{
  margin:20px 0 0;font-size:clamp(30px,4.4vw,52px);line-height:1.18;font-weight:800;color:#F4F8FF;
}
.hero-sub{margin-top:16px;font-size:clamp(15px,1.5vw,18px);color:#B8C6E4;max-width:64ch;}
.hero-search{
  margin-top:28px;display:flex;gap:12px;max-width:640px;
  padding:10px;border-radius:16px;
  background:rgba(255,255,255,.06);backdrop-filter:blur(18px) saturate(140%);
  border:1px solid rgba(120,170,255,.20);
}
.hero-search input{
  flex:1;min-width:0;height:48px;border-radius:10px;border:1px solid transparent;
  background:rgba(10,17,34,.75);padding:0 18px;font-size:15px;color:#EAF1FF;
  transition:border-color .2s ease,box-shadow .2s ease;
}
.hero-search input::placeholder{color:#7386AB;}
.hero-search input:focus{outline:none;border-color:var(--brand);box-shadow:0 0 0 4px rgba(47,107,255,.22);}
.hero-search button{
  height:48px;padding:0 26px;border:none;border-radius:10px;cursor:pointer;font-weight:600;
  background:linear-gradient(135deg,var(--brand),var(--brand-deep));color:#fff;
  box-shadow:0 0 0 1px rgba(47,107,255,.55),0 10px 30px -8px rgba(47,107,255,.6);
  transition:transform .18s ease,filter .2s ease;
}
.hero-search button:hover{transform:translateY(-2px);filter:brightness(1.08);}
.quick-tags{margin-top:20px;display:flex;flex-wrap:wrap;gap:10px;}
.quick-tag{
  padding:7px 16px;border-radius:999px;font-size:13px;cursor:pointer;
  border:1px solid rgba(120,170,255,.28);background:rgba(255,255,255,.05);color:#C9D7F2;
  transition:border-color .2s ease,color .2s ease,background .2s ease,transform .18s ease;
}
.quick-tag:hover{border-color:var(--accent);color:var(--accent);background:rgba(43,230,192,.08);transform:translateY(-2px);}

/* ---------- stat strip ---------- */
.stat-strip{border-top:1px solid var(--line-soft);border-bottom:1px solid var(--line-soft);background:var(--bg-2);}
.stat-grid{
  display:grid;grid-template-columns:repeat(4,1fr);
  padding:26px 0;
}
.stat-item{padding:0 22px;border-left:1px solid var(--line-soft);}
.stat-item:first-child{border-left:none;padding-left:0;}
.stat-value{font-size:clamp(24px,2.6vw,32px);color:#EAF1FF;}
.stat-value em{font-style:normal;font-size:14px;color:var(--brand-soft);margin-left:4px;font-weight:600;}
.stat-label{margin-top:4px;font-size:13px;color:var(--muted);}

/* ---------- faq ---------- */
.section-head{max-width:74ch;}
.section-head h2{font-size:clamp(24px,3vw,34px);line-height:1.25;font-weight:700;}
.section-head p{margin-top:14px;color:var(--muted);font-size:15px;}
.eyebrow{
  display:inline-block;margin-bottom:14px;padding:5px 12px;border-radius:6px;
  font-size:12px;letter-spacing:.6px;color:#A6F6E5;
  border:1px solid rgba(43,230,192,.45);background:rgba(43,230,192,.08);
}
.faq-list{margin-top:36px;max-width:960px;}
.faq-item{
  border:1px solid var(--line);border-radius:var(--radius-card);
  background:rgba(255,255,255,.045);
  backdrop-filter:blur(18px) saturate(140%);
  margin-bottom:14px;overflow:hidden;
  transition:border-color .25s ease,box-shadow .25s ease,background .25s ease;
  animation:fadeUp .32s ease-out both;
}
.faq-item:hover{border-color:rgba(43,230,192,.4);}
.faq-item[open]{border-color:rgba(43,230,192,.55);box-shadow:var(--shadow-card);background:rgba(255,255,255,.06);}
.faq-item summary{
  list-style:none;cursor:pointer;position:relative;
  display:flex;align-items:center;gap:16px;
  min-height:64px;padding:18px 26px;
  font-size:19px;font-weight:700;color:#EAF1FF;line-height:1.5;
}
.faq-item summary::-webkit-details-marker{display:none;}
.faq-item summary::before{
  content:"";position:absolute;left:0;top:14px;bottom:14px;width:2px;border-radius:2px;
  background:transparent;transition:background .2s ease,box-shadow .2s ease;
}
.faq-item[open] summary::before{background:var(--accent);box-shadow:0 0 12px var(--accent);}
.faq-item summary::after{
  content:"+";margin-left:auto;flex:0 0 auto;font-size:22px;font-weight:400;
  color:var(--brand-soft);transition:transform .2s ease,color .2s ease;
}
.faq-item[open] summary::after{transform:rotate(90deg);color:var(--accent);}
.faq-body{padding:0 26px 24px 44px;color:var(--text);font-size:15.5px;line-height:1.9;}
.faq-body p+p{margin-top:10px;}
.faq-meta{
  display:inline-block;margin-top:14px;padding:4px 12px;border-radius:6px;font-size:12px;
  color:#FFD8B4;border:1px solid rgba(255,138,43,.5);background:rgba(255,138,43,.10);
}
.faq-empty{
  display:none;margin-top:26px;padding:32px;border-radius:var(--radius-card);
  border:1px dashed rgba(120,170,255,.3);background:rgba(255,255,255,.03);text-align:center;
}
.faq-empty strong{display:block;color:#EAF1FF;font-size:17px;margin-bottom:8px;}
.faq-empty p{color:var(--muted);font-size:14px;}

/* ---------- notes two column ---------- */
.notes-grid{
  display:grid;grid-template-columns:repeat(2,minmax(0,1fr));
  gap:clamp(24px,3vw,48px);margin-top:34px;
}
.note-block{
  padding:26px 28px;border-radius:var(--radius-card);
  border:1px solid var(--line);background:rgba(255,255,255,.035);
}
.note-block h3{font-size:17px;margin-bottom:14px;color:#EAF1FF;}
.note-block ul{display:flex;flex-direction:column;gap:10px;}
.note-block li{position:relative;padding-left:18px;font-size:14px;color:#93A2C1;line-height:1.8;}
.note-block li::before{
  content:"";position:absolute;left:0;top:11px;width:6px;height:6px;border-radius:50%;
  background:var(--accent);box-shadow:0 0 8px rgba(43,230,192,.8);
}

/* ---------- support card ---------- */
.support-wrap{
  display:grid;grid-template-columns:1.05fr .95fr;gap:clamp(24px,3vw,52px);align-items:center;
}
.support-media{
  border-radius:var(--radius-card);overflow:hidden;border:1px solid var(--line);
  box-shadow:var(--shadow-card);
}
.support-media img{aspect-ratio:16/9;width:100%;object-fit:cover;}
.support-copy h2{font-size:clamp(24px,3vw,32px);line-height:1.28;}
.support-copy p{margin-top:16px;color:var(--muted);}
.support-list{margin-top:22px;display:grid;gap:14px;}
.support-list li{
  display:flex;gap:14px;align-items:flex-start;padding:16px 18px;border-radius:14px;
  border:1px solid var(--line);background:rgba(255,255,255,.035);
  transition:border-color .2s ease,transform .2s ease;
}
.support-list li:hover{border-color:rgba(43,230,192,.4);transform:translateY(-2px);}
.support-list .idx{
  flex:0 0 auto;font-size:13px;font-weight:800;color:var(--accent);
  border:1px solid rgba(43,230,192,.4);border-radius:6px;padding:2px 8px;
}
.support-list strong{display:block;color:#EAF1FF;font-size:15px;font-weight:600;}
.support-list span{font-size:13.5px;color:var(--muted);}

/* ---------- cta bar ---------- */
.cta-bar{
  border-radius:20px;padding:clamp(24px,3vw,38px);
  border:1px solid rgba(255,138,43,.45);
  background:linear-gradient(120deg,rgba(47,107,255,.16),rgba(43,230,192,.10) 55%,rgba(255,138,43,.14));
  display:flex;align-items:center;gap:24px;flex-wrap:wrap;justify-content:space-between;
}
.cta-bar h3{font-size:clamp(18px,2vw,22px);line-height:1.4;}
.cta-bar p{margin-top:8px;font-size:14px;color:#A9B7D4;}
.cta-actions{display:flex;gap:12px;flex-wrap:wrap;}

/* ---------- footer ---------- */
.site-footer{background:var(--bg-0);border-top:1px solid var(--line-soft);padding:clamp(48px,6vw,72px) 0 0;margin-top:clamp(56px,7vw,96px);}
.footer-grid{display:grid;grid-template-columns:1.6fr 1fr 1fr 1fr;gap:clamp(24px,3vw,44px);}
.footer-brand{display:flex;align-items:center;gap:10px;font-weight:700;color:#EAF1FF;font-size:17px;}
.footer-brand svg{width:28px;height:28px;}
.footer-about{margin-top:16px;font-size:14px;color:var(--muted);max-width:42ch;line-height:1.85;}
.footer-col h4{font-size:15px;color:#EAF1FF;margin-bottom:16px;font-weight:600;}
.footer-col ul{display:flex;flex-direction:column;gap:11px;}
.footer-col a,.footer-col span{font-size:14px;color:var(--muted);transition:color .2s ease;}
.footer-col a:hover{color:var(--accent);}
.footer-bottom{
  margin-top:clamp(36px,5vw,56px);padding:22px 0;border-top:1px solid var(--line-soft);
  display:flex;justify-content:space-between;gap:14px;flex-wrap:wrap;
  font-size:13px;color:#6C7A99;
}

@keyframes fadeUp{from{opacity:0;transform:translateY(12px);}to{opacity:1;transform:translateY(0);}}

/* ---------- responsive ---------- */
@media (max-width:1023px){
  .nav-links{display:none;}
  .nav-toggle{display:flex;}
  .nav-search{display:none;}
  .stat-grid{grid-template-columns:repeat(2,1fr);gap:22px 0;}
  .stat-item:nth-child(3){border-left:none;padding-left:0;}
  .support-wrap{grid-template-columns:1fr;}
  .footer-grid{grid-template-columns:1fr 1fr;}
}
@media (max-width:767px){
  .container-x{padding:0 18px;}
  .hero-inner{padding:28px 20px 32px;}
  .hero-search{flex-direction:column;padding:12px;}
  .hero-search button{width:100%;}
  .faq-item summary{font-size:17px;padding:16px 18px;}
  .faq-body{padding:0 18px 20px 28px;}
  .notes-grid{grid-template-columns:1fr;}
  .stat-grid{grid-template-columns:1fr;gap:0;}
  .stat-item{border-left:none;padding:14px 0;border-top:1px solid var(--line-soft);}
  .stat-item:first-child{border-top:none;padding-top:0;}
  .cta-bar{flex-direction:column;align-items:flex-start;}
  .cta-actions{width:100%;}
  .cta-actions a{flex:1 1 auto;}
  .footer-grid{grid-template-columns:1fr;}
  .footer-bottom{flex-direction:column;gap:6px;}
}
@media (max-width:520px){
  .brand{font-size:15.5px;}
  .header-actions{gap:10px;}
  .btn-cta{height:38px;padding:0 16px;font-size:14px;}
  .hero h1{font-size:28px;}
  .faq-item summary{font-size:16px;}
}

/* roulang page: category3 */
:root{
  --bg-0:#05070F;
  --bg-1:#0A1122;
  --bg-2:#101A33;
  --brand:#2F6BFF;
  --brand-deep:#1740B8;
  --brand-soft:#7FA6FF;
  --accent:#2BE6C0;
  --promo:#FF8A2B;
  --nav-bg:#FFFFFF;
  --nav-text:#0B1226;
  --nav-sub:#5A6683;
  --nav-line:#E6EAF3;
  --text:#C7D2E8;
  --muted:#8A97B4;
  --line:rgba(120,170,255,.16);
  --r-card:18px;
  --r-img:14px;
  --r-btn:12px;
  --r-input:10px;
  --r-badge:6px;
  --shadow-card:0 18px 40px -20px rgba(0,0,0,.8);
  --glow-blue:0 0 0 1px rgba(47,107,255,.55),0 10px 30px -8px rgba(47,107,255,.6);
  --font-cn:'PingFang SC','HarmonyOS Sans SC','Microsoft YaHei','Source Han Sans SC',system-ui,sans-serif;
}
*,*::before,*::after{box-sizing:border-box;}
html{-webkit-text-size-adjust:100%;scroll-behavior:smooth;}
body{
  margin:0;
  background:var(--bg-1);
  color:var(--text);
  font-family:var(--font-cn);
  font-size:16px;
  line-height:1.85;
  -webkit-font-smoothing:antialiased;
}
img{max-width:100%;display:block;}
a{color:inherit;text-decoration:none;}
button,input{font:inherit;}
h1,h2,h3,h4{margin:0;color:#fff;letter-spacing:.2px;}
p{margin:0;}
ul{margin:0;padding:0;list-style:none;}
::selection{background:rgba(47,107,255,.4);color:#fff;}
:focus-visible{outline:2px solid var(--accent);outline-offset:2px;}

.container-x{width:100%;max-width:1200px;margin:0 auto;padding:0 16px;}
@media (min-width:768px){.container-x{padding:0 24px;}}
@media (min-width:1280px){.container-x{max-width:1280px;padding:0 32px;}}

/* ============ header ============ */
.site-header{
  position:sticky;top:0;z-index:60;
  background:var(--nav-bg);
  border-bottom:1px solid var(--nav-line);
  box-shadow:0 6px 24px -18px rgba(11,18,38,.55);
}
.site-header::after{
  content:"";display:block;height:2px;
  background:linear-gradient(90deg,var(--brand),var(--accent));
}
.header-inner{display:flex;align-items:center;gap:22px;height:64px;}
.brand{display:flex;align-items:center;gap:10px;flex:none;}
.brand svg{width:30px;height:30px;flex:none;}
.brand-text{font-size:18px;font-weight:700;color:var(--nav-text);letter-spacing:.3px;white-space:nowrap;}
.nav-links{display:flex;align-items:center;gap:24px;}
.nav-links a{
  position:relative;display:inline-block;padding:6px 0;
  font-size:15px;color:var(--nav-text);transition:color .18s ease;
}
.nav-links a::after{
  content:"";position:absolute;left:0;right:0;bottom:-3px;height:2px;border-radius:2px;
  background:linear-gradient(90deg,var(--brand),var(--accent));
  transform:scaleX(0);transform-origin:left;transition:transform .2s ease;
}
.nav-links a:hover{color:var(--brand);}
.nav-links a:hover::after,.nav-links a.active::after{transform:scaleX(1);}
.nav-links a.active{color:var(--brand);font-weight:600;}
.header-actions{margin-left:auto;display:flex;align-items:center;gap:12px;}
.search-box{
  display:flex;align-items:center;gap:8px;height:38px;width:220px;padding:0 14px;
  background:#F2F5FB;border:1px solid transparent;border-radius:999px;transition:.2s ease;
}
.search-box:focus-within{border-color:var(--brand);box-shadow:0 0 0 4px rgba(47,107,255,.18);}
.search-box svg{width:16px;height:16px;color:var(--nav-sub);flex:none;}
.search-box input{width:100%;border:0;outline:0;background:transparent;font-size:14px;color:var(--nav-text);}
.search-box input::placeholder{color:var(--nav-sub);}
.btn-cta{
  display:inline-flex;align-items:center;justify-content:center;
  padding:9px 20px;border-radius:999px;font-size:14px;font-weight:600;color:#fff;
  background:linear-gradient(135deg,var(--brand),var(--brand-deep));
  box-shadow:var(--glow-blue);transition:transform .18s ease,box-shadow .18s ease,filter .18s ease;
  white-space:nowrap;
}
.btn-cta:hover{transform:translateY(-1px);filter:brightness(1.06);box-shadow:0 0 0 1px rgba(47,107,255,.7),0 14px 34px -6px rgba(47,107,255,.75);}
.btn-cta:active{transform:translateY(1px);}
.nav-toggle{
  display:none;align-items:center;justify-content:center;
  width:40px;height:40px;border:1px solid var(--nav-line);border-radius:10px;
  background:#F7F9FE;color:var(--nav-text);
}
.nav-toggle svg{width:20px;height:20px;}
.mobile-drawer{display:none;background:#fff;border-top:1px solid var(--nav-line);}
.mobile-drawer.open{display:block;}
.mobile-drawer .drawer-inner{padding:16px 0 22px;display:grid;gap:6px;}
.mobile-drawer a.drawer-link{
  display:block;padding:12px 4px;font-size:16px;color:var(--nav-text);
  border-bottom:1px solid var(--nav-line);
}
.mobile-drawer a.drawer-link.active{color:var(--brand);font-weight:600;}
.drawer-search{
  display:flex;align-items:center;gap:8px;height:42px;margin-top:12px;padding:0 14px;
  background:#F2F5FB;border-radius:var(--r-input);
}
.drawer-search input{width:100%;border:0;outline:0;background:transparent;font-size:15px;color:var(--nav-text);}
.drawer-cta{margin-top:12px;width:100%;padding:12px 20px;border-radius:var(--r-btn);font-size:15px;}

@media (max-width:1023px){
  .nav-links,.search-box,.header-actions .btn-cta{display:none;}
  .nav-toggle{display:inline-flex;}
  .header-inner{height:56px;}
  .brand-text{font-size:16px;}
}

/* ============ breadcrumb ============ */
.crumb-bar{background:var(--bg-1);border-bottom:1px solid var(--line);}
.breadcrumb{display:flex;flex-wrap:wrap;align-items:center;gap:8px;padding:12px 0;font-size:13px;color:var(--muted);}
.breadcrumb a{color:var(--brand-soft);transition:color .18s ease;}
.breadcrumb a:hover{color:var(--accent);}
.crumb-sep{color:rgba(138,151,180,.6);}
.crumb-current{color:var(--text);}

/* ============ hero ============ */
.doc-hero{
  position:relative;overflow:hidden;
  background:#05070F url('/assets/images/backpic/back-2.png') center/cover no-repeat;
}
.doc-hero::before{
  content:"";position:absolute;inset:0;
  background:linear-gradient(180deg,rgba(5,7,15,.72),rgba(5,7,15,.94));
}
.doc-hero::after{
  content:"";position:absolute;inset:0;opacity:.7;
  background-image:linear-gradient(rgba(120,170,255,.06) 1px,transparent 1px),linear-gradient(90deg,rgba(120,170,255,.06) 1px,transparent 1px);
  background-size:48px 48px;
}
.hero-inner{
  position:relative;z-index:2;
  display:grid;grid-template-columns:1.15fr .85fr;gap:48px;align-items:center;
  padding-top:72px;padding-bottom:72px;
}
.badge-chip{
  display:inline-block;padding:4px 10px;border-radius:var(--r-badge);
  font-size:12px;color:var(--accent);letter-spacing:.4px;
  border:1px solid rgba(43,230,192,.45);background:rgba(43,230,192,.08);
}
.hero-copy h1{
  margin-top:18px;
  font-size:clamp(30px,4.4vw,52px);line-height:1.18;font-weight:800;
}
.hero-sub{margin-top:18px;font-size:18px;color:#D7E0F3;max-width:44ch;}
.hero-actions{display:flex;flex-wrap:wrap;gap:14px;margin-top:28px;}
.btn-primary{
  display:inline-flex;align-items:center;justify-content:center;
  padding:13px 28px;border-radius:999px;font-size:15px;font-weight:700;color:#fff;
  background:linear-gradient(135deg,var(--brand),var(--brand-deep));
  box-shadow:var(--glow-blue);transition:transform .18s ease,box-shadow .18s ease,filter .18s ease;
}
.btn-primary:hover{transform:translateY(-2px);filter:brightness(1.07);box-shadow:0 0 0 1px rgba(47,107,255,.7),0 16px 40px -8px rgba(47,107,255,.8);}
.btn-primary:active{transform:translateY(1px);}
.btn-ghost{
  display:inline-flex;align-items:center;justify-content:center;
  padding:13px 26px;border-radius:999px;font-size:15px;font-weight:600;
  color:#DCE6FA;border:1px solid rgba(127,166,255,.5);transition:.2s ease;
}
.btn-ghost:hover{color:#fff;border-color:var(--accent);box-shadow:0 0 0 1px rgba(43,230,192,.35);}
.hero-note{margin-top:18px;font-size:13px;color:var(--muted);font-variant-numeric:tabular-nums;}
.hero-panel{
  padding:26px;border-radius:var(--r-card);
  background:rgba(255,255,255,.06);
  border:1px solid var(--line);
  backdrop-filter:blur(18px) saturate(140%);
  box-shadow:var(--shadow-card);
}
.panel-title{font-size:16px;font-weight:700;color:#fff;}
.check-list{margin-top:16px;display:grid;gap:12px;}
.check-list li{
  position:relative;padding-left:28px;font-size:14px;color:var(--text);line-height:1.7;
}
.check-list li::before{
  content:"";position:absolute;left:0;top:6px;width:16px;height:16px;border-radius:5px;
  border:1px solid rgba(43,230,192,.6);background:rgba(43,230,192,.12);
}
.check-list li::after{
  content:"";position:absolute;left:5px;top:10px;width:6px;height:3px;
  border-left:2px solid var(--accent);border-bottom:2px solid var(--accent);
  transform:rotate(-45deg);
}
.panel-foot{
  display:flex;align-items:center;justify-content:space-between;
  margin-top:20px;padding-top:16px;border-top:1px solid var(--line);
  font-size:13px;color:var(--muted);
}
.panel-num{font-size:20px;font-weight:800;color:var(--promo);font-variant-numeric:tabular-nums;}

/* ============ stat band ============ */
.stat-band{background:var(--bg-2);border-top:1px solid var(--line);border-bottom:1px solid var(--line);}
.stat-grid{display:grid;grid-template-columns:repeat(4,1fr);}
.stat-item{padding:28px 20px;text-align:center;border-left:1px solid rgba(120,170,255,.12);}
.stat-item:first-child{border-left:0;}
.stat-num{font-size:clamp(22px,2.6vw,30px);font-weight:800;color:#fff;font-variant-numeric:tabular-nums;letter-spacing:.5px;}
.stat-num span{color:var(--accent);}
.stat-label{margin-top:6px;font-size:13px;color:var(--muted);}

/* ============ doc layout ============ */
.doc-section{padding:clamp(48px,6vw,84px) 0;}
.doc-layout{display:grid;grid-template-columns:240px 1fr;gap:56px;align-items:start;}
.doc-toc{position:sticky;top:96px;}
.toc-title{font-size:13px;letter-spacing:1px;color:var(--muted);padding-bottom:12px;border-bottom:1px solid var(--line);}
.toc-nav{margin-top:14px;display:grid;gap:2px;}
.toc-link{
  display:flex;gap:10px;align-items:baseline;
  padding:9px 12px;border-left:2px solid transparent;border-radius:0 8px 8px 0;
  font-size:14px;color:var(--muted);transition:.18s ease;
}
.toc-link:hover{color:var(--text);background:rgba(255,255,255,.05);}
.toc-link.active{color:#fff;border-left-color:var(--accent);background:rgba(43,230,192,.08);}
.toc-num{font-size:12px;font-variant-numeric:tabular-nums;color:var(--accent);}

.doc-body{min-width:0;}
.doc-block{
  display:grid;grid-template-columns:92px 1fr;gap:24px;
  padding:44px 0;border-top:1px solid var(--line);
  opacity:0;transform:translateY(12px);
  transition:opacity .32s ease-out,transform .32s ease-out;
}
.doc-block.in-view{opacity:1;transform:translateY(0);}
.doc-block:first-child{border-top:0;padding-top:4px;}
.doc-index{
  font-size:44px;line-height:1;font-weight:800;
  color:rgba(43,230,192,.22);
  -webkit-text-stroke:1px rgba(43,230,192,.65);
  letter-spacing:1px;font-variant-numeric:tabular-nums;
}
.doc-content h2{font-size:clamp(21px,2.4vw,26px);line-height:1.35;font-weight:700;}
.doc-content h2 + p{margin-top:18px;}
.doc-content p{max-width:76ch;color:var(--text);}
.doc-content p + p{margin-top:1em;}
.dot-list{margin-top:18px;display:grid;gap:10px;max-width:76ch;}
.dot-list li{position:relative;padding-left:20px;color:var(--text);line-height:1.8;}
.dot-list li::before{
  content:"";position:absolute;left:0;top:11px;width:8px;height:2px;border-radius:2px;
  background:linear-gradient(90deg,var(--brand),var(--accent));
}
.doc-figure{margin:32px 0 8px;border-radius:var(--r-img);overflow:hidden;border:1px solid var(--line);}
.doc-figure img{width:100%;aspect-ratio:16/9;object-fit:cover;}
.doc-figure figcaption{padding:12px 16px;background:rgba(255,255,255,.03);font-size:13px;color:var(--muted);text-align:center;}
.tip-line{
  margin-top:22px;padding:14px 18px;border-left:3px solid var(--promo);
  background:rgba(255,138,43,.07);border-radius:0 10px 10px 0;
  font-size:14px;color:#EAD9C6;
}

/* ============ plain faq ============ */
.faq-plain{padding:clamp(48px,6vw,84px) 0;background:var(--bg-2);border-top:1px solid var(--line);}
.section-head{max-width:76ch;}
.section-head h2{font-size:clamp(24px,3vw,34px);line-height:1.25;font-weight:700;}
.section-head p{margin-top:14px;color:var(--muted);}
.faq-grid{margin-top:36px;display:grid;grid-template-columns:1fr 1fr;gap:28px 40px;}
.faq-item{border-top:1px solid var(--line);padding-top:18px;}
.faq-item h3{font-size:17px;font-weight:700;color:#fff;line-height:1.5;}
.faq-item p{margin-top:10px;font-size:14.5px;color:var(--text);line-height:1.85;}

/* ============ cta band ============ */
.cta-wrap{padding:clamp(48px,6vw,88px) 0;}
.cta-band{
  display:flex;flex-wrap:wrap;align-items:center;justify-content:space-between;gap:24px;
  padding:32px 34px;border-radius:var(--r-card);
  background:linear-gradient(135deg,rgba(47,107,255,.18),rgba(43,230,192,.08));
  border:1px solid rgba(255,138,43,.38);
  box-shadow:0 0 0 1px rgba(47,107,255,.22),var(--shadow-card);
}
.cta-band h2{font-size:clamp(20px,2.4vw,26px);font-weight:700;}
.cta-band p{margin-top:10px;font-size:14.5px;color:var(--text);max-width:60ch;}
.cta-actions{display:flex;flex-wrap:wrap;gap:12px;}

/* ============ footer ============ */
.site-footer{background:var(--bg-0);border-top:1px solid var(--line);padding:56px 0 24px;}
.footer-grid{display:grid;grid-template-columns:1.4fr 1fr 1fr 1fr;gap:32px;}
.footer-brand{display:flex;align-items:center;gap:10px;font-size:17px;font-weight:700;color:#fff;}
.footer-brand svg{width:28px;height:28px;flex:none;}
.footer-about{margin-top:14px;font-size:14px;line-height:1.85;color:var(--muted);max-width:38ch;}
.footer-col h4{font-size:15px;font-weight:600;color:#fff;}
.footer-col ul{margin-top:14px;display:grid;gap:10px;}
.footer-col a,.footer-col span{font-size:14px;color:var(--muted);transition:color .18s ease;}
.footer-col a:hover{color:var(--accent);}
.footer-bottom{
  margin-top:40px;padding-top:18px;border-top:1px solid rgba(120,170,255,.12);
  display:flex;flex-wrap:wrap;justify-content:space-between;gap:10px;
  font-size:13px;color:var(--muted);font-variant-numeric:tabular-nums;
}

/* ============ responsive ============ */
@media (max-width:1023px){
  .hero-inner{grid-template-columns:1fr;gap:34px;padding-top:52px;padding-bottom:52px;}
  .doc-layout{grid-template-columns:1fr;gap:32px;}
  .doc-toc{position:static;padding:18px;border:1px solid var(--line);border-radius:var(--r-card);background:rgba(255,255,255,.03);}
  .toc-nav{grid-template-columns:1fr 1fr;}
  .stat-grid{grid-template-columns:1fr 1fr;}
  .stat-item:nth-child(3){border-left:0;}
  .stat-item:nth-child(n+3){border-top:1px solid rgba(120,170,255,.12);}
  .footer-grid{grid-template-columns:1fr 1fr;}
}
@media (max-width:768px){
  .faq-grid{grid-template-columns:1fr;}
  .doc-block{grid-template-columns:1fr;gap:10px;padding:36px 0;}
  .doc-index{font-size:34px;}
  .cta-band{padding:26px 22px;}
  .footer-grid{grid-template-columns:1fr;gap:28px;}
}
@media (max-width:520px){
  .hero-copy h1{font-size:28px;}
  .hero-sub{font-size:16px;}
  .toc-nav{grid-template-columns:1fr;}
  .stat-grid{grid-template-columns:1fr;}
  .stat-item{border-left:0;border-top:1px solid rgba(120,170,255,.12);}
  .stat-item:first-child{border-top:0;}
  .btn-primary,.btn-ghost{width:100%;}
}