/* roulang page: index */
:root{
  --bg:#060A12;
  --bg-2:#0A1120;
  --primary:#00E6A8;
  --primary-dim:rgba(0,230,168,.12);
  --accent:#FF6B2C;
  --cyan:#3DDCFF;
  --text:#EAF2FF;
  --text-2:#9FB0C8;
  --text-3:#64748B;
  --glass:rgba(18,32,56,.55);
  --glass-2:rgba(18,32,56,.35);
  --border:rgba(255,255,255,.08);
  --border-strong:rgba(255,255,255,.16);
  --r-lg:20px;
  --r-md:16px;
  --r-sm:12px;
  --r-xs:14px;
  --shadow-card:0 16px 40px -24px rgba(0,0,0,.9);
  --glow:0 0 24px -4px rgba(0,230,168,.45);
  --glow-soft:0 0 18px -6px rgba(0,230,168,.35);
  --gap:24px;
  --sec:96px;
  --font:-apple-system,"Noto Sans SC","Source Han Sans SC","PingFang SC","Microsoft YaHei",sans-serif;
}
*,*::before,*::after{box-sizing:border-box;}
html{-webkit-text-size-adjust:100%;scroll-behavior:smooth;}
body{
  margin:0;
  background:var(--bg);
  color:var(--text);
  font-family:var(--font);
  font-size:16px;
  line-height:1.9;
  letter-spacing:0;
  -webkit-font-smoothing:antialiased;
  padding-bottom:0;
}
img{max-width:100%;display:block;height:auto;}
a{color:inherit;text-decoration:none;transition:color .2s ease,opacity .2s ease;}
button{font-family:inherit;font-size:inherit;cursor:pointer;border:0;background:none;color:inherit;}
input{font-family:inherit;font-size:inherit;}
ul,ol{margin:0;padding:0;list-style:none;}
h1,h2,h3,h4,p{margin:0;}
h1{font-size:40px;line-height:1.25;font-weight:800;letter-spacing:0;}
h2{font-size:30px;line-height:1.35;font-weight:700;letter-spacing:0;}
h3{font-size:20px;line-height:1.5;font-weight:600;}
p{font-size:16px;line-height:1.9;color:var(--text-2);}
:focus-visible{outline:2px solid var(--primary);outline-offset:2px;border-radius:6px;}
::selection{background:rgba(0,230,168,.28);color:#fff;}

.container{width:100%;max-width:1200px;margin:0 auto;padding:0 24px;}
.section{padding:var(--sec) 0;position:relative;}
.section--alt{background:linear-gradient(180deg,var(--bg-2) 0%,rgba(10,17,32,.4) 100%);}
.section-head{max-width:760px;margin-bottom:40px;}
.section-head.center{margin-left:auto;margin-right:auto;text-align:center;}
.eyebrow{
  display:inline-flex;align-items:center;gap:8px;
  font-size:12px;font-weight:600;letter-spacing:.08em;
  color:var(--primary);text-transform:uppercase;
  background:var(--primary-dim);border:1px solid rgba(0,230,168,.25);
  padding:6px 14px;border-radius:999px;margin-bottom:16px;
}
.eyebrow::before{content:"";width:6px;height:6px;border-radius:50%;background:var(--primary);box-shadow:var(--glow-soft);}
.section-head h2{margin-bottom:14px;}
.section-head p{font-size:16px;color:var(--text-2);}
.lead-num{font-variant-numeric:tabular-nums;font-weight:700;}

/* 按钮 */
.btn{
  display:inline-flex;align-items:center;justify-content:center;gap:8px;
  height:44px;min-width:120px;padding:0 22px;
  border-radius:var(--r-sm);font-size:15px;font-weight:600;
  transition:transform .2s ease,box-shadow .25s ease,background .2s ease,border-color .2s ease,color .2s ease;
  white-space:nowrap;
}
.btn-primary{
  background:linear-gradient(135deg,var(--primary) 0%,var(--cyan) 100%);
  color:#04120C;
  border:1px solid rgba(255,255,255,.35);
  box-shadow:var(--glow);
}
.btn-primary:hover{transform:translateY(-2px);box-shadow:0 0 32px -4px rgba(0,230,168,.6);}
.btn-primary:active{transform:translateY(1px);box-shadow:0 0 14px -6px rgba(0,230,168,.4);}
.btn-ghost{
  background:transparent;color:var(--primary);
  border:1px solid rgba(0,230,168,.45);
}
.btn-ghost:hover{background:var(--primary-dim);transform:translateY(-2px);}
.btn-ghost:active{transform:translateY(1px);}
.btn-text{
  display:inline-flex;align-items:center;gap:6px;
  color:var(--primary);font-size:14px;font-weight:600;
}
.btn-text .arrow{transition:transform .2s ease;}
.btn-text:hover .arrow{transform:translateX(3px);}
.btn[disabled],.btn.is-disabled{opacity:.45;pointer-events:none;}
.btn-block{width:100%;}
.btn-sm{height:38px;font-size:14px;min-width:104px;padding:0 16px;}

/* 徽章 */
.badge{
  display:inline-flex;align-items:center;gap:5px;
  font-size:12px;font-weight:600;line-height:1;
  padding:6px 12px;border-radius:999px;
  border:1px solid var(--border);color:var(--text-2);
  background:rgba(255,255,255,.04);
}
.badge-primary{color:var(--primary);border-color:rgba(0,230,168,.35);background:var(--primary-dim);}
.badge-accent{color:#FFD8C4;background:rgba(255,107,44,.16);border-color:rgba(255,107,44,.45);}
.badge-cyan{color:var(--cyan);border-color:rgba(61,220,255,.35);background:rgba(61,220,255,.1);}

/* 头部导航 */
.site-header{
  position:sticky;top:0;z-index:60;
  background:transparent;
  border-bottom:1px solid transparent;
  transition:background .3s ease,border-color .3s ease,backdrop-filter .3s ease;
}
.site-header.is-stuck{
  background:rgba(6,10,18,.78);
  backdrop-filter:blur(14px);
  -webkit-backdrop-filter:blur(14px);
  border-bottom:1px solid var(--border);
}
.nav-wrap{
  display:flex;align-items:center;gap:24px;
  height:72px;
}
.brand{display:flex;flex-direction:column;line-height:1.1;gap:2px;flex:0 0 auto;}
.brand-en{
  font-size:19px;font-weight:800;letter-spacing:-.01em;
  background:linear-gradient(135deg,var(--primary),var(--cyan));
  -webkit-background-clip:text;background-clip:text;color:transparent;
}
.brand-cn{font-size:11px;color:var(--text-2);letter-spacing:.04em;font-weight:500;}
.nav-main{display:flex;align-items:center;gap:6px;margin-left:auto;}
.nav-main a{
  position:relative;
  padding:8px 14px;border-radius:10px;
  font-size:15px;color:var(--text-2);font-weight:500;
}
.nav-main a:hover{color:var(--text);background:rgba(255,255,255,.04);}
.nav-main a.is-active{color:var(--primary);}
.nav-main a.is-active::after{
  content:"";position:absolute;left:14px;right:14px;bottom:0;height:2px;
  background:var(--primary);border-radius:2px;box-shadow:var(--glow-soft);
}
.nav-cta{margin-left:12px;}
.nav-toggle{
  display:none;width:44px;height:44px;border-radius:12px;
  border:1px solid var(--border);background:var(--glass);
  align-items:center;justify-content:center;
}
.nav-toggle span{display:block;width:18px;height:2px;background:var(--text);position:relative;border-radius:2px;}
.nav-toggle span::before,.nav-toggle span::after{
  content:"";position:absolute;left:0;width:18px;height:2px;background:var(--text);border-radius:2px;
}
.nav-toggle span::before{top:-6px;}
.nav-toggle span::after{top:6px;}
.mobile-panel{
  display:none;
  position:absolute;left:16px;right:16px;top:76px;
  background:rgba(10,17,32,.96);
  border:1px solid var(--border);border-radius:var(--r-md);
  backdrop-filter:blur(14px);-webkit-backdrop-filter:blur(14px);
  padding:12px;box-shadow:var(--shadow-card);
}
.mobile-panel.is-open{display:block;}
.mobile-panel a{
  display:block;padding:12px 14px;border-radius:10px;
  color:var(--text-2);font-size:15px;
}
.mobile-panel a:hover,.mobile-panel a.is-active{background:rgba(255,255,255,.05);color:var(--primary);}

/* Hero */
.hero{
  position:relative;overflow:hidden;
  padding:72px 0 56px;
  background:
    linear-gradient(180deg,rgba(6,10,18,.82) 0%,rgba(6,10,18,.9) 60%,var(--bg) 100%),
    radial-gradient(900px 420px at 18% 12%,rgba(0,230,168,.16),transparent 65%),
    radial-gradient(700px 380px at 88% 30%,rgba(61,220,255,.12),transparent 70%),
    url("/assets/images/backpic/back-1.webp") center/cover no-repeat;
}
.hero::after{
  content:"";position:absolute;inset:0;pointer-events:none;
  background-image:linear-gradient(rgba(255,255,255,.06) 1px,transparent 1px),
                   linear-gradient(90deg,rgba(255,255,255,.06) 1px,transparent 1px);
  background-size:12px 12px;
  opacity:.55;
  mask-image:radial-gradient(700px 420px at 30% 20%,#000 0%,transparent 75%);
  -webkit-mask-image:radial-gradient(700px 420px at 30% 20%,#000 0%,transparent 75%);
}
.hero-inner{
  position:relative;z-index:2;
  display:grid;grid-template-columns:7fr 5fr;gap:48px;align-items:center;
}
.hero h1{margin-bottom:18px;color:#fff;}
.hero h1 .hl{
  background:linear-gradient(135deg,var(--primary),var(--cyan));
  -webkit-background-clip:text;background-clip:text;color:transparent;
  border-bottom:3px solid rgba(0,230,168,.35);
  padding-bottom:2px;
}
.hero-sub{font-size:17px;color:var(--text-2);max-width:520px;margin-bottom:26px;}
.hero-actions{display:flex;flex-wrap:wrap;gap:14px;margin-bottom:24px;}
.hero-points{display:flex;flex-wrap:wrap;gap:18px;}
.hero-points li{
  display:flex;align-items:center;gap:8px;
  font-size:13px;color:var(--text-2);
}
.hero-points li::before{
  content:"";width:8px;height:8px;border-radius:50%;
  background:var(--primary);box-shadow:var(--glow-soft);flex:0 0 auto;
}
.hero-card{
  position:relative;
  background:var(--glass);
  border:1px solid var(--border);
  border-radius:var(--r-lg);
  padding:28px;
  backdrop-filter:blur(14px);-webkit-backdrop-filter:blur(14px);
  box-shadow:var(--shadow-card);
}
.hero-card::before{
  content:"";position:absolute;top:18px;right:18px;width:10px;height:10px;border-radius:50%;
  background:var(--primary);box-shadow:0 0 18px 2px rgba(0,230,168,.55);
}
.hero-card h2{font-size:18px;line-height:1.4;margin-bottom:6px;}
.hero-card .card-note{font-size:13px;color:var(--text-3);margin-bottom:22px;}
.stat-list{display:grid;gap:18px;}
.stat-item{display:flex;align-items:baseline;gap:14px;padding-bottom:16px;border-bottom:1px solid var(--border);}
.stat-item:last-child{border-bottom:0;padding-bottom:0;}
.stat-num{
  font-size:26px;font-weight:700;font-variant-numeric:tabular-nums;
  color:var(--primary);min-width:74px;
}
.stat-item:nth-child(2) .stat-num{color:var(--cyan);}
.stat-label{font-size:13px;color:var(--text-3);line-height:1.6;}

/* 信任条 */
.trust-bar{
  position:relative;z-index:2;
  margin-top:48px;
  display:flex;flex-wrap:wrap;align-items:center;
  gap:8px 0;
  padding:16px 22px;
  border-radius:999px;
  background:rgba(18,32,56,.5);
  border:1px solid var(--border);
  backdrop-filter:blur(14px);-webkit-backdrop-filter:blur(14px);
}
.trust-bar li{
  display:flex;align-items:center;gap:10px;
  font-size:14px;color:var(--text-2);
  padding:0 22px;
  border-right:1px solid var(--border);
}
.trust-bar li:last-child{border-right:0;}
.trust-bar li strong{color:var(--primary);font-weight:700;font-variant-numeric:tabular-nums;}

/* 权益对比表 */
.plan-scroll{
  overflow-x:auto;
  padding-bottom:8px;
  -webkit-overflow-scrolling:touch;
}
.plan-grid{
  display:grid;
  grid-template-columns:220px repeat(4,minmax(180px,1fr));
  min-width:960px;
  border-radius:var(--r-lg);
  border:1px solid var(--border);
  background:var(--glass-2);
  overflow:hidden;
}
.plan-cell{
  padding:16px 18px;
  border-bottom:1px solid var(--border);
  border-right:1px solid var(--border);
  font-size:14px;
  display:flex;align-items:center;
  transition:background .2s ease;
}
.plan-cell:nth-child(5n){border-right:0;}
.plan-row:hover .plan-cell{background:rgba(255,255,255,.04);}
.plan-head{
  padding:24px 18px;
  align-items:stretch;flex-direction:column;justify-content:flex-start;
  gap:10px;
  background:rgba(10,17,32,.75);
  border-bottom:1px solid var(--border-strong);
}
.plan-head .tier-name{font-size:18px;font-weight:700;color:var(--text);}
.plan-head .tier-price{
  font-size:26px;font-weight:700;font-variant-numeric:tabular-nums;color:var(--primary);
  line-height:1.2;letter-spacing:-.01em;
}
.plan-head .tier-price small{font-size:13px;font-weight:500;color:var(--text-3);margin-left:4px;}
.plan-head .tier-desc{font-size:12px;color:var(--text-3);line-height:1.6;min-height:38px;}
.plan-head .btn{margin-top:auto;}
.plan-head.is-rec{
  background:linear-gradient(180deg,rgba(0,230,168,.1),rgba(10,17,32,.75));
  box-shadow:inset 0 0 0 1px rgba(0,230,168,.45),var(--glow-soft);
  position:relative;
}
.plan-head.is-rec::after{
  content:"推荐";position:absolute;top:0;right:0;
  background:var(--accent);color:#2A0E03;font-size:12px;font-weight:700;
  padding:4px 12px;border-radius:0 var(--r-lg) 0 12px;
}
.plan-feature{
  font-weight:600;color:var(--text);
  gap:10px;background:rgba(10,17,32,.45);
}
.plan-feature .fi{
  width:16px;height:16px;border-radius:4px;flex:0 0 auto;
  border:1.5px solid rgba(0,230,168,.6);
  position:relative;
}
.plan-feature .fi::after{
  content:"";position:absolute;left:3px;top:5px;width:7px;height:4px;
  border-left:1.5px solid var(--primary);border-bottom:1.5px solid var(--primary);
  transform:rotate(-45deg);
}
.plan-yes{color:var(--primary);font-weight:700;justify-content:center;font-size:15px;}
.plan-no{color:var(--text-3);justify-content:center;font-size:15px;letter-spacing:.1em;}
.plan-hint{display:none;margin-top:12px;font-size:13px;color:var(--text-3);}

/* 等级亮点 - 阶梯错位 */
.tier-split{display:grid;grid-template-columns:300px 1fr;gap:56px;align-items:start;}
.tier-sticky{position:sticky;top:104px;}
.tier-sticky h2{margin-bottom:16px;}
.tier-sticky p{font-size:15px;}
.tier-list{display:grid;gap:22px;}
.tier-card{
  background:var(--glass);
  border:1px solid var(--border);
  border-radius:var(--r-lg);
  padding:26px;
  box-shadow:var(--shadow-card);
  backdrop-filter:blur(14px);-webkit-backdrop-filter:blur(14px);
  transition:transform .25s ease,border-color .25s ease,box-shadow .25s ease;
}
.tier-card:hover{transform:translateY(-2px);border-color:var(--border-strong);box-shadow:var(--shadow-card),var(--glow-soft);}
.tier-card:nth-child(1){margin-left:0;}
.tier-card:nth-child(2){margin-left:20px;}
.tier-card:nth-child(3){margin-left:40px;}
.tier-top{display:flex;align-items:center;gap:12px;flex-wrap:wrap;margin-bottom:16px;}
.tier-top .tier-badge{
  font-size:12px;font-weight:700;padding:5px 12px;border-radius:999px;
  background:rgba(255,107,44,.16);border:1px solid rgba(255,107,44,.45);color:#FFD8C4;
}
.tier-card h3{font-size:19px;}
.tier-points{display:grid;gap:10px;margin-bottom:20px;}
.tier-points li{
  display:flex;gap:10px;align-items:flex-start;
  font-size:14px;color:var(--text-2);line-height:1.7;
}
.tier-points li::before{
  content:"";flex:0 0 auto;margin-top:7px;
  width:7px;height:7px;border-radius:2px;background:var(--primary);
  box-shadow:var(--glow-soft);
}
.tier-ico{
  width:38px;height:38px;border-radius:12px;flex:0 0 auto;
  border:1px solid rgba(0,230,168,.3);
  background:var(--primary-dim);
  display:flex;align-items:center;justify-content:center;
  color:var(--primary);font-size:15px;font-weight:800;font-variant-numeric:tabular-nums;
}

/* 专属内容预览 */
.preview-grid{
  display:grid;
  grid-template-columns:1.25fr 1fr;
  grid-auto-rows:1fr;
  gap:22px;
}
.preview-card{
  position:relative;overflow:hidden;
  border-radius:var(--r-lg);
  border:1px solid var(--border);
  background:var(--glass);
  min-height:240px;
  display:flex;flex-direction:column;justify-content:flex-end;
  box-shadow:var(--shadow-card);
  transition:transform .25s ease,border-color .25s ease;
}
.preview-card:first-child{grid-row:span 2;min-height:auto;}
.preview-card:hover{transform:translateY(-2px);border-color:var(--border-strong);}
.preview-card img{
  position:absolute;inset:0;width:100%;height:100%;object-fit:cover;
  transition:transform .4s ease;
}
.preview-card:hover img{transform:scale(1.02);}
.preview-veil{
  position:absolute;inset:0;
  background:linear-gradient(180deg,rgba(6,10,18,.35) 0%,rgba(6,10,18,.86) 100%);
  transition:opacity .3s ease;
}
.preview-card:hover .preview-veil{opacity:.8;}
.preview-lock{
  position:absolute;top:50%;left:50%;transform:translate(-50%,-50%);
  width:46px;height:46px;border-radius:50%;
  border:1px solid rgba(255,255,255,.24);
  background:rgba(6,10,18,.5);
  display:flex;align-items:center;justify-content:center;
  color:var(--text);z-index:2;
}
.preview-lock svg{width:20px;height:20px;stroke:currentColor;fill:none;stroke-width:1.6;}
.preview-badge{position:absolute;top:16px;right:16px;z-index:3;}
.preview-body{position:relative;z-index:3;padding:24px;}
.preview-body h3{font-size:19px;margin-bottom:8px;}
.preview-body p{font-size:14px;color:var(--text-2);margin-bottom:12px;}
.preview-body .btn-text{font-size:14px;}
.preview-card:hover .preview-body .btn-text{color:var(--cyan);}

/* 资讯列表 */
.news-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:24px;}
.news-card{
  display:flex;flex-direction:column;
  background:var(--glass);
  border:1px solid var(--border);
  border-radius:var(--r-lg);
  overflow:hidden;
  box-shadow:var(--shadow-card);
  transition:transform .25s ease,border-color .25s ease,box-shadow .25s ease;
}
.news-card:hover{transform:translateY(-2px);border-color:var(--border-strong);box-shadow:var(--shadow-card),var(--glow-soft);}
.news-thumb{
  position:relative;aspect-ratio:16/10;overflow:hidden;
  background:linear-gradient(110deg,rgba(255,255,255,.05) 8%,rgba(255,255,255,.12) 18%,rgba(255,255,255,.05) 33%);
  background-size:200% 100%;
  animation:shimmer 1.6s linear infinite;
}
.news-thumb img{width:100%;height:100%;object-fit:cover;transition:transform .35s ease;}
.news-card:hover .news-thumb img{transform:scale(1.02);}
.news-thumb::after{
  content:"";position:absolute;inset:0;
  background:linear-gradient(180deg,rgba(6,10,18,.05),rgba(6,10,18,.6));
}
.news-body{padding:22px;display:flex;flex-direction:column;gap:12px;flex:1;}
.news-body h3{
  font-size:18px;line-height:1.5;
  display:-webkit-box;-webkit-line-clamp:2;-webkit-box-orient:vertical;overflow:hidden;
}
.news-body .excerpt{
  font-size:14px;color:var(--text-2);
  display:-webkit-box;-webkit-line-clamp:2;-webkit-box-orient:vertical;overflow:hidden;
  margin:0;
}
.news-foot{
  margin-top:auto;display:flex;align-items:center;justify-content:space-between;
  padding-top:14px;border-top:1px solid var(--border);
  font-size:13px;color:var(--text-3);
}
.news-empty{
  min-height:220px;display:flex;flex-direction:column;align-items:center;justify-content:center;gap:14px;
  background:var(--glass);border:1px solid var(--border);border-radius:var(--r-lg);
  text-align:center;padding:32px;
}
.news-empty svg{width:34px;height:34px;stroke:var(--primary);fill:none;stroke-width:1.5;}
.news-empty p{margin:0;font-size:14px;}

/* FAQ */
.faq-wrap{display:grid;grid-template-columns:320px 1fr;gap:56px;align-items:start;}
.faq-list{max-width:820px;display:grid;gap:12px;}
.faq-item{
  background:var(--glass);
  border:1px solid var(--border);
  border-radius:var(--r-xs);
  overflow:hidden;
  transition:border-color .2s ease,background .2s ease;
}
.faq-item:hover{border-color:var(--border-strong);}
.faq-item.is-open{border-color:rgba(0,230,168,.4);}
.faq-q{
  width:100%;display:flex;align-items:center;justify-content:space-between;gap:16px;
  padding:18px 22px;text-align:left;
  font-size:16px;font-weight:600;color:var(--text);
}
.faq-icon{
  position:relative;width:16px;height:16px;flex:0 0 auto;
  transition:transform .2s ease;
}
.faq-icon::before,.faq-icon::after{
  content:"";position:absolute;background:var(--text-2);border-radius:2px;
  transition:background .2s ease;
}
.faq-icon::before{left:0;top:7px;width:16px;height:2px;}
.faq-icon::after{top:0;left:7px;width:2px;height:16px;}
.faq-item.is-open .faq-icon{transform:rotate(45deg);}
.faq-item.is-open .faq-icon::before,.faq-item.is-open .faq-icon::after{background:var(--primary);}
.faq-a{
  max-height:0;overflow:hidden;
  transition:max-height .2s ease;
}
.faq-a p{padding:0 22px 20px;margin:0;font-size:15px;color:var(--text-2);line-height:1.8;}

/* CTA 条带 */
.cta-band{
  position:relative;overflow:hidden;
  background:var(--glass);
  border:1px solid var(--border);
  border-radius:var(--r-lg);
  padding:40px;
  display:flex;align-items:center;justify-content:space-between;gap:32px;
  backdrop-filter:blur(14px);-webkit-backdrop-filter:blur(14px);
  box-shadow:var(--shadow-card);
}
.cta-band::after{
  content:"";position:absolute;left:50%;bottom:-90px;transform:translateX(-50%);
  width:520px;height:180px;border-radius:50%;
  background:radial-gradient(closest-side,rgba(0,230,168,.4),transparent 72%);
  pointer-events:none;
}
.cta-band h2{font-size:26px;margin-bottom:8px;}
.cta-band p{font-size:15px;margin:0;max-width:560px;}
.cta-actions{display:flex;align-items:center;gap:16px;flex-wrap:wrap;position:relative;z-index:2;}

/* 表单 */
.field-row{display:flex;gap:12px;width:100%;}
.field-row input{
  flex:1;height:44px;padding:0 16px;
  background:rgba(6,10,18,.6);
  border:1px solid var(--border);
  border-radius:var(--r-sm);
  color:var(--text);font-size:14px;
  transition:border-color .2s ease,box-shadow .2s ease;
}
.field-row input::placeholder{color:var(--text-3);}
.field-row input:focus{outline:none;border-color:var(--primary);box-shadow:var(--glow-soft);}
.field-row input.is-error{border-color:var(--accent);}
.field-msg{font-size:13px;color:var(--accent);margin-top:8px;display:none;}
.field-msg.is-show{display:block;}

/* 页脚 */
.site-footer{
  margin-top:var(--sec);
  border-top:1px solid var(--border);
  background:linear-gradient(180deg,rgba(10,17,32,.6),rgba(6,10,18,1));
  padding-top:64px;
}
.footer-grid{display:grid;grid-template-columns:1.4fr 1fr 1fr 1.2fr;gap:40px;padding-bottom:44px;}
.footer-col details summary{
  list-style:none;cursor:pointer;
  font-size:15px;font-weight:700;color:var(--text);
  padding:6px 0;margin-bottom:10px;
  display:flex;align-items:center;justify-content:space-between;
}
.footer-col details summary::-webkit-details-marker{display:none;}
.footer-col .foot-title{font-size:15px;font-weight:700;color:var(--text);margin-bottom:14px;}
.footer-col ul{display:grid;gap:10px;}
.footer-col ul a,.footer-col p,.footer-col address{
  font-size:14px;color:var(--text-3);font-style:normal;line-height:1.85;
}
.footer-col ul a{display:inline-block;transition:color .2s ease,transform .2s ease;}
.footer-col ul a:hover{color:var(--primary);transform:translateX(2px);}
.footer-brand .brand{margin-bottom:14px;}
.footer-brand p{max-width:320px;margin-bottom:16px;}
.footer-brand .foot-note{font-size:13px;color:var(--text-3);}
.footer-bottom{
  border-top:1px solid var(--border);
  padding:20px 0 28px;
  display:flex;align-items:center;justify-content:space-between;gap:16px;flex-wrap:wrap;
  font-size:13px;color:var(--text-3);
}
.footer-bottom nav{display:flex;gap:18px;flex-wrap:wrap;}
.footer-bottom nav a:hover{color:var(--primary);}

/* 移动底部 Tab */
.tabbar{
  display:none;
  position:fixed;left:0;right:0;bottom:0;z-index:70;
  height:calc(60px + env(safe-area-inset-bottom));
  padding-bottom:env(safe-area-inset-bottom);
  background:rgba(6,10,18,.94);
  border-top:1px solid var(--border);
  backdrop-filter:blur(14px);-webkit-backdrop-filter:blur(14px);
}
.tabbar ul{display:grid;grid-template-columns:repeat(4,1fr);height:60px;}
.tabbar a{
  position:relative;
  display:flex;flex-direction:column;align-items:center;justify-content:center;gap:4px;
  font-size:10px;color:var(--text-3);
}
.tabbar a svg{width:22px;height:22px;stroke:currentColor;fill:none;stroke-width:1.6;}
.tabbar a.is-active{color:var(--primary);}
.tabbar a.is-active::before{
  content:"";position:absolute;top:0;left:50%;transform:translateX(-50%);
  width:28px;height:2px;border-radius:2px;background:var(--primary);box-shadow:var(--glow-soft);
}

/* 骨架与空态 */
.skeleton{
  border-radius:var(--r-md);
  background:linear-gradient(110deg,rgba(255,255,255,.05) 8%,rgba(255,255,255,.12) 18%,rgba(255,255,255,.05) 33%);
  background-size:200% 100%;
  animation:shimmer 1.6s linear infinite;
}
@keyframes shimmer{to{background-position:-200% 0;}}

/* 响应式 */
@media (max-width:1280px){
  .container{max-width:1200px;}
}
@media (max-width:1023px){
  :root{--sec:72px;}
  h1{font-size:32px;}
  h2{font-size:24px;}
  .nav-main,.nav-cta{display:none;}
  .nav-toggle{display:flex;margin-left:auto;}
  .hero-inner{grid-template-columns:1fr;gap:36px;}
  .hero{padding:48px 0 40px;}
  .tier-split{grid-template-columns:1fr;gap:32px;}
  .tier-sticky{position:static;}
  .tier-card:nth-child(2){margin-left:12px;}
  .tier-card:nth-child(3){margin-left:24px;}
  .faq-wrap{grid-template-columns:1fr;gap:32px;}
  .preview-grid{grid-template-columns:1fr 1fr;}
  .preview-card:first-child{grid-row:span 1;}
  .news-grid{grid-template-columns:repeat(2,1fr);}
  .footer-grid{grid-template-columns:1fr 1fr;gap:28px;}
  .cta-band{flex-direction:column;align-items:flex-start;gap:24px;}
  .tabbar{display:block;}
  body{padding-bottom:calc(60px + env(safe-area-inset-bottom));}
}
@media (max-width:767px){
  :root{--sec:56px;}
  h1{font-size:28px;}
  h2{font-size:22px;}
  h3{font-size:18px;}
  p{font-size:15px;line-height:1.85;}
  .container{padding:0 16px;}
  .hero{padding:36px 0 32px;}
  .hero-sub{font-size:15px;}
  .hero-actions .btn{width:100%;}
  .hero-points{gap:12px;}
  .trust-bar{border-radius:var(--r-md);padding:14px 8px;gap:6px;}
  .trust-bar li{padding:6px 14px;border-right:0;font-size:13px;width:50%;}
  .plan-grid{min-width:820px;grid-template-columns:180px repeat(4,minmax(150px,1fr));}
  .plan-hint{display:block;}
  .preview-grid{grid-template-columns:1fr;}
  .news-grid{grid-template-columns:1fr;}
  .footer-grid{grid-template-columns:1fr;}
  .footer-col details summary{padding:14px 0;border-bottom:1px solid var(--border);margin-bottom:0;}
  .footer-col details[open] summary{border-bottom:0;}
  .footer-col details .foot-list{padding:10px 0 16px;}
  .cta-band{padding:26px 20px;}
  .cta-actions{width:100%;flex-direction:column;align-items:stretch;}
  .cta-actions .btn{width:100%;}
  .field-row{flex-direction:column;}
  .field-row .btn{width:100%;}
  .footer-bottom{flex-direction:column;align-items:flex-start;}
}
@media (min-width:768px){
  .footer-col details > .foot-list{display:block !important;}
  .footer-col details summary{pointer-events:none;color:var(--text);}
  .footer-col details summary .foot-arrow{display:none;}
}
@media (max-width:479px){
  h1{font-size:26px;}
  .tier-card:nth-child(2),.tier-card:nth-child(3){margin-left:0;}
  .brand-en{font-size:17px;}
}

/* roulang page: article */
:root{
  --bg:#060A12;
  --bg-2:#0A1120;
  --bg-3:#0D1626;
  --primary:#00E6A8;
  --primary-soft:rgba(0,230,168,.12);
  --primary-line:rgba(0,230,168,.38);
  --accent:#FF6B2C;
  --cyan:#3DDCFF;
  --text:#EAF2FF;
  --text-2:#9FB0C8;
  --text-3:#64748B;
  --glass:rgba(18,32,56,.55);
  --glass-2:rgba(18,32,56,.78);
  --border:rgba(255,255,255,.08);
  --border-2:rgba(255,255,255,.16);
  --r-lg:20px;
  --r-md:16px;
  --r-sm:12px;
  --r-img:14px;
  --r-pill:999px;
  --shadow-card:0 16px 40px -24px rgba(0,0,0,.9);
  --glow:0 0 24px -4px rgba(0,230,168,.45);
  --glow-strong:0 0 34px -2px rgba(0,230,168,.6);
  --section:96px;
  --font:-apple-system,"Noto Sans SC","Source Han Sans SC","PingFang SC","Microsoft YaHei",sans-serif;
}
*,*::before,*::after{box-sizing:border-box;}
html{-webkit-text-size-adjust:100%;scroll-behavior:smooth;}
body{
  margin:0;
  background:var(--bg);
  color:var(--text);
  font-family:var(--font);
  font-size:16px;
  line-height:1.9;
  letter-spacing:0;
  -webkit-font-smoothing:antialiased;
  overflow-x:hidden;
}
body::before{
  content:"";
  position:fixed;
  inset:0;
  background:
    radial-gradient(760px 460px at 12% -6%,rgba(0,230,168,.13),transparent 68%),
    radial-gradient(620px 420px at 92% 4%,rgba(61,220,255,.10),transparent 70%);
  pointer-events:none;
  z-index:0;
}
img{max-width:100%;display:block;}
a{color:var(--cyan);text-decoration:none;transition:color .2s ease,opacity .2s ease;}
a:hover{color:var(--primary);}
button,input{font:inherit;color:inherit;}
button{cursor:pointer;background:none;border:0;}
h1,h2,h3,h4,p,ul,ol,figure,blockquote{margin:0;}
ul,ol{padding-left:1.25em;}
:focus-visible{outline:2px solid var(--primary);outline-offset:2px;border-radius:6px;}
::selection{background:rgba(0,230,168,.28);color:#04120C;}

.container{width:100%;max-width:1200px;margin:0 auto;padding:0 24px;position:relative;z-index:1;}
.section{padding:var(--section) 0;}
.section-alt{background:var(--bg-2);}
.eyebrow{
  display:inline-flex;align-items:center;gap:8px;
  font-size:12px;letter-spacing:.12em;color:var(--primary);
  background:var(--primary-soft);border:1px solid var(--primary-line);
  border-radius:var(--r-pill);padding:5px 12px;text-transform:uppercase;
  font-weight:700;
}
.section-head{margin-bottom:36px;max-width:760px;}
.section-head h2{font-size:30px;line-height:1.35;font-weight:700;margin:14px 0 10px;}
.section-head p{color:var(--text-2);font-size:15px;}
.num{font-variant-numeric:tabular-nums;font-weight:700;letter-spacing:-.01em;}

/* 按钮体系 */
.btn{
  display:inline-flex;align-items:center;justify-content:center;gap:8px;
  min-width:120px;height:44px;padding:0 20px;
  border-radius:var(--r-sm);border:1px solid transparent;
  font-size:15px;font-weight:600;line-height:1;
  transition:transform .18s ease,box-shadow .18s ease,background .18s ease,border-color .18s ease,color .18s ease;
  white-space:nowrap;
}
.btn-primary{
  background:linear-gradient(135deg,var(--primary) 0%,var(--cyan) 100%);
  color:#04120C;
  box-shadow:var(--glow),inset 0 0 0 1px rgba(255,255,255,.28);
}
.btn-primary:hover{transform:translateY(-2px);box-shadow:var(--glow-strong),inset 0 0 0 1px rgba(255,255,255,.32);color:#04120C;}
.btn-primary:active{transform:translateY(1px);box-shadow:var(--glow);}
.btn-ghost{
  background:transparent;border-color:var(--primary-line);color:var(--primary);
}
.btn-ghost:hover{background:var(--primary-soft);transform:translateY(-2px);color:var(--primary);}
.btn-ghost:active{transform:translateY(1px);}
.btn-text{
  display:inline-flex;align-items:center;gap:6px;color:var(--primary);
  font-weight:600;font-size:14px;min-width:0;height:auto;padding:0;
}
.btn-text .arrow{transition:transform .2s ease;}
.btn-text:hover .arrow{transform:translateX(3px);}
.btn-sm{height:40px;min-width:96px;font-size:14px;padding:0 16px;}
.btn[disabled],.btn.is-disabled{opacity:.45;pointer-events:none;}

/* 顶部导航 */
.site-header{
  position:sticky;top:0;z-index:60;
  background:rgba(6,10,18,.72);
  backdrop-filter:blur(14px);
  border-bottom:1px solid transparent;
  transition:background .25s ease,border-color .25s ease;
}
.site-header.is-scrolled{
  background:rgba(7,12,22,.9);
  border-bottom-color:var(--border);
}
.nav-wrap{
  width:100%;max-width:1200px;margin:0 auto;padding:0 24px;
  height:72px;display:flex;align-items:center;gap:24px;
}
.brand{display:flex;flex-direction:column;line-height:1.15;gap:2px;color:var(--text);}
.brand:hover{color:var(--text);}
.brand-en{font-size:19px;font-weight:800;letter-spacing:-.01em;}
.brand-cn{font-size:11px;color:var(--text-2);letter-spacing:.06em;}
.nav-main{display:flex;align-items:center;gap:6px;margin-left:auto;}
.nav-main a{
  position:relative;color:var(--text-2);font-size:14px;font-weight:500;
  padding:8px 10px;border-radius:10px;transition:color .2s ease,background .2s ease;
}
.nav-main a:hover{color:var(--text);background:rgba(255,255,255,.04);}
.nav-main a.is-active{color:var(--primary);}
.nav-main a.is-active::after{
  content:"";position:absolute;left:10px;right:10px;bottom:2px;height:2px;
  border-radius:2px;background:var(--primary);box-shadow:var(--glow);
}
.nav-cta{margin-left:8px;}
.nav-toggle{
  display:none;width:44px;height:44px;border-radius:12px;
  border:1px solid var(--border);background:var(--glass);
  align-items:center;justify-content:center;
}
.nav-toggle span{
  display:block;width:18px;height:2px;background:var(--text);
  position:relative;border-radius:2px;
}
.nav-toggle span::before,
.nav-toggle span::after{
  content:"";position:absolute;left:0;width:18px;height:2px;background:var(--text);border-radius:2px;
  transition:transform .2s ease;
}
.nav-toggle span::before{top:-6px;}
.nav-toggle span::after{top:6px;}
.nav-toggle[aria-expanded="true"] span{background:transparent;}
.nav-toggle[aria-expanded="true"] span::before{transform:translateY(6px) rotate(45deg);background:var(--primary);}
.nav-toggle[aria-expanded="true"] span::after{transform:translateY(-6px) rotate(-45deg);background:var(--primary);}

/* 内页横幅 */
.page-hero{
  position:relative;overflow:hidden;
  background-image:url("/assets/images/backpic/back-1.webp");
  background-size:cover;background-position:center;
  border-bottom:1px solid var(--border);
}
.page-hero::before{
  content:"";position:absolute;inset:0;
  background:
    linear-gradient(180deg,rgba(6,10,18,.78),rgba(6,10,18,.94)),
    radial-gradient(720px 360px at 22% 0%,rgba(0,230,168,.18),transparent 66%);
}
.page-hero::after{
  content:"";position:absolute;inset:0;
  background-image:linear-gradient(rgba(255,255,255,.06) 1px,transparent 1px),
                   linear-gradient(90deg,rgba(255,255,255,.06) 1px,transparent 1px);
  background-size:12px 12px;opacity:.5;pointer-events:none;
}
.page-hero .container{position:relative;z-index:2;padding-top:54px;padding-bottom:48px;}

.breadcrumb{
  display:flex;flex-wrap:wrap;align-items:center;gap:8px;
  font-size:13px;color:var(--text-3);margin-bottom:18px;
}
.breadcrumb .sep{color:rgba(255,255,255,.18);}
.breadcrumb a{color:var(--text-2);}
.breadcrumb a:hover{color:var(--primary);}
.breadcrumb .current{color:var(--primary);opacity:.9;max-width:520px;overflow:hidden;text-overflow:ellipsis;white-space:nowrap;}

.article-title{
  font-size:40px;line-height:1.25;font-weight:800;
  max-width:920px;margin-bottom:16px;
}
.article-lead{
  color:var(--text-2);font-size:15px;max-width:760px;
}
.meta-row{
  display:flex;flex-wrap:wrap;align-items:center;gap:10px;
  font-size:13px;color:var(--text-3);margin-top:18px;
}
.meta-row .dot{width:3px;height:3px;border-radius:50%;background:var(--text-3);display:inline-block;}
.tag-pill{
  display:inline-flex;align-items:center;
  font-size:12px;padding:4px 12px;border-radius:var(--r-pill);
  background:var(--primary-soft);border:1px solid var(--primary-line);
  color:var(--primary);font-weight:600;
}

/* 正文区布局 */
.article-layout{
  display:grid;grid-template-columns:minmax(0,1fr) 260px;
  gap:48px;align-items:start;
  padding-top:56px;padding-bottom:80px;
}
.article-main{max-width:820px;min-width:0;}
.article-body{font-size:16px;line-height:1.9;color:var(--text-2);}
.article-body > * + *{margin-top:18px;}
.article-body p{color:var(--text-2);}
.article-body strong{color:var(--text);font-weight:700;}
.article-body h2{
  position:relative;font-size:26px;line-height:1.4;font-weight:700;color:var(--text);
  margin-top:44px;padding-left:16px;
}
.article-body h2::before{
  content:"";position:absolute;left:0;top:6px;bottom:6px;width:4px;border-radius:4px;
  background:linear-gradient(180deg,var(--primary),var(--cyan));box-shadow:var(--glow);
}
.article-body h3{font-size:18px;font-weight:600;color:var(--primary);margin-top:30px;}
.article-body a{color:var(--cyan);border-bottom:1px solid rgba(61,220,255,.35);}
.article-body a:hover{color:var(--primary);border-bottom-color:var(--primary-line);}
.article-body ul,.article-body ol{padding-left:1.4em;color:var(--text-2);}
.article-body li + li{margin-top:8px;}
.article-body blockquote{
  background:var(--glass);border:1px solid var(--border);border-left:3px solid var(--primary);
  border-radius:var(--r-md);padding:18px 22px;color:var(--text-2);
  backdrop-filter:blur(14px);
}
.article-body figure{margin:26px 0;}
.article-body img{border-radius:var(--r-md);width:100%;height:auto;}
.article-body figcaption{font-size:13px;color:var(--text-3);text-align:center;margin-top:10px;}
.article-body table{
  width:100%;border-collapse:collapse;font-size:14px;
  border:1px solid var(--border);border-radius:var(--r-md);overflow:hidden;
  background:var(--glass);
}
.article-body th,.article-body td{
  padding:12px 14px;text-align:left;border-bottom:1px solid var(--border);
}
.article-body th{color:var(--text);background:rgba(255,255,255,.04);font-weight:600;}
.article-body tbody tr:nth-child(even){background:rgba(255,255,255,.03);}
.article-body hr{border:0;border-top:1px solid var(--border);margin:32px 0;}

.article-body > p:first-of-type{color:var(--text);font-weight:500;}
.article-body > p:first-of-type::first-letter{
  float:left;font-size:44px;line-height:1;font-weight:800;color:var(--primary);
  margin:6px 10px 0 0;
}

/* 侧边目录 */
.article-aside{position:sticky;top:96px;}
.toc-card{
  background:var(--glass);border:1px solid var(--border);border-radius:var(--r-md);
  padding:20px;backdrop-filter:blur(14px);box-shadow:var(--shadow-card);
}
.toc-card h2{font-size:13px;letter-spacing:.14em;color:var(--text-3);font-weight:700;margin-bottom:12px;}
.toc-card ul{list-style:none;padding:0;margin:0;display:flex;flex-direction:column;gap:10px;}
.toc-card a{
  display:flex;gap:8px;align-items:flex-start;
  font-size:14px;color:var(--text-2);line-height:1.5;
}
.toc-card a::before{content:"";width:6px;height:6px;border-radius:50%;background:var(--primary);opacity:.5;margin-top:8px;flex:none;}
.toc-card a:hover{color:var(--primary);transform:translateX(2px);}

/* 标签与文末 */
.tag-block{margin-top:44px;padding-top:26px;border-top:1px solid var(--border);}
.tag-block h2{font-size:14px;color:var(--text-3);font-weight:600;margin-bottom:14px;letter-spacing:.08em;}
.tag-list{display:flex;flex-wrap:wrap;gap:10px;}
.tag-list a{
  display:inline-flex;align-items:center;font-size:13px;padding:6px 14px;
  border-radius:var(--r-pill);border:1px solid var(--border);color:var(--text-2);
  background:var(--glass);transition:all .2s ease;
}
.tag-list a:hover{color:var(--primary);border-color:var(--primary-line);transform:translateY(-2px);}

.prevnext{display:grid;grid-template-columns:1fr 1fr;gap:20px;margin-top:32px;}
.prevnext a{
  display:block;background:var(--glass);border:1px solid var(--border);
  border-radius:var(--r-md);padding:20px;color:var(--text);
  transition:transform .2s ease,border-color .2s ease,box-shadow .2s ease;
  box-shadow:var(--shadow-card);backdrop-filter:blur(14px);
}
.prevnext a:hover{transform:translateY(-2px);border-color:var(--primary-line);box-shadow:var(--shadow-card),var(--glow);color:var(--text);}
.prevnext .pn-label{font-size:12px;color:var(--text-3);display:block;margin-bottom:8px;letter-spacing:.08em;}
.prevnext .pn-title{font-size:16px;font-weight:600;line-height:1.5;}

.related{margin-top:64px;}
.related h2{font-size:22px;font-weight:700;margin-bottom:20px;}
.related-list{display:flex;flex-direction:column;gap:14px;}
.related-item{
  display:flex;gap:16px;align-items:center;
  background:var(--glass);border:1px solid var(--border);border-radius:var(--r-md);
  padding:12px;color:var(--text);
  transition:transform .2s ease,border-color .2s ease,background .2s ease;
}
.related-item:hover{transform:translateY(-2px);border-color:var(--primary-line);color:var(--text);}
.related-thumb{
  width:112px;height:72px;flex:none;border-radius:12px;overflow:hidden;
  background:linear-gradient(120deg,rgba(60,80,110,.5),rgba(30,45,70,.5));
}
.related-thumb img{width:100%;height:100%;object-fit:cover;}
.related-item h3{font-size:15px;font-weight:600;line-height:1.5;margin-bottom:6px;}
.related-item time{font-size:12px;color:var(--text-3);}

.back-row{margin-top:40px;display:flex;flex-wrap:wrap;gap:16px;align-items:center;}

.empty-state{
  min-height:220px;display:flex;flex-direction:column;align-items:center;justify-content:center;
  gap:14px;text-align:center;padding:32px;
  background:var(--glass);border:1px solid var(--border);border-radius:var(--r-lg);
  backdrop-filter:blur(14px);
}
.empty-state svg{width:42px;height:42px;stroke:var(--primary);opacity:.85;}
.empty-state p{color:var(--text-2);font-size:15px;}
.empty-state .empty-title{color:var(--text);font-size:17px;font-weight:600;}

/* 骨架屏 */
.skeleton{
  position:relative;overflow:hidden;background:rgba(255,255,255,.05);border-radius:var(--r-md);
}
.skeleton::after{
  content:"";position:absolute;inset:0;
  background:linear-gradient(90deg,transparent,rgba(255,255,255,.12),transparent);
  transform:translateX(-100%);animation:shimmer 1.4s infinite;
}
@keyframes shimmer{to{transform:translateX(100%);}}

/* 页脚 */
.site-footer{
  background:var(--bg-2);border-top:1px solid var(--border);
  padding:64px 0 0;margin-top:20px;position:relative;z-index:1;
}
.footer-grid{display:grid;grid-template-columns:1.4fr 1fr 1fr 1.2fr;gap:36px;}
.footer-col details{border:0;}
.footer-col summary{
  list-style:none;cursor:pointer;font-size:15px;font-weight:700;color:var(--text);
  margin-bottom:16px;display:flex;align-items:center;justify-content:space-between;
  padding-bottom:10px;border-bottom:1px solid var(--border);
}
.footer-col summary::-webkit-details-marker{display:none;}
.foot-arrow{color:var(--text-3);font-size:14px;}
.foot-list{display:flex;flex-direction:column;gap:10px;}
.foot-list ul{list-style:none;padding:0;margin:0;display:flex;flex-direction:column;gap:10px;}
.foot-list li a,.foot-list a{
  font-size:14px;color:var(--text-2);display:inline-block;transition:color .2s ease,transform .2s ease;
}
.foot-list li a:hover,.foot-list a:hover{color:var(--primary);transform:translateX(2px);}
.footer-brand p{font-size:14px;color:var(--text-2);line-height:1.8;}
.foot-note{color:var(--text-3)!important;font-size:13px!important;}
.footer-brand .brand{margin-bottom:6px;}
.site-footer address{font-style:normal;font-size:14px;color:var(--text-2);line-height:1.9;}
.field-row{display:flex;gap:10px;align-items:center;}
.field-row input{
  flex:1;min-width:0;height:40px;padding:0 14px;border-radius:var(--r-sm);
  background:rgba(255,255,255,.04);border:1px solid var(--border);color:var(--text);
  transition:border-color .2s ease,box-shadow .2s ease;
}
.field-row input::placeholder{color:var(--text-3);}
.field-row input:focus{outline:none;border-color:var(--primary);box-shadow:var(--glow);}
.field-row input.is-error{border-color:var(--accent);}
.field-msg{font-size:13px;color:var(--text-3);margin-top:8px;}
.field-msg.is-error{color:var(--accent);}
.field-msg.is-ok{color:var(--primary);}
.footer-bottom{
  margin-top:44px;border-top:1px solid var(--border);padding:20px 0 calc(28px + env(safe-area-inset-bottom));
  display:flex;flex-wrap:wrap;gap:12px;align-items:center;justify-content:space-between;
  font-size:13px;color:var(--text-3);
}
.footer-bottom a{color:var(--text-3);}
.footer-bottom a:hover{color:var(--primary);}
.footer-links{display:flex;gap:16px;flex-wrap:wrap;}

/* 移动底部 Tab */
.mobile-tabs{
  display:none;position:fixed;left:0;right:0;bottom:0;z-index:70;
  height:calc(60px + env(safe-area-inset-bottom));
  padding-bottom:env(safe-area-inset-bottom);
  background:rgba(8,13,24,.94);backdrop-filter:blur(16px);
  border-top:1px solid var(--border);
}
.mobile-tabs a{
  flex:1;display:flex;flex-direction:column;align-items:center;justify-content:center;gap:4px;
  font-size:10px;color:var(--text-3);position:relative;
}
.mobile-tabs a svg{width:22px;height:22px;stroke:currentColor;fill:none;stroke-width:1.7;}
.mobile-tabs a.is-active{color:var(--primary);}
.mobile-tabs a.is-active::before{
  content:"";position:absolute;top:0;left:50%;transform:translateX(-50%);
  width:26px;height:2px;border-radius:2px;background:var(--primary);box-shadow:var(--glow);
}

@media (max-width:1279px){
  .article-layout{grid-template-columns:minmax(0,1fr) 232px;gap:36px;}
}
@media (max-width:1023px){
  :root{--section:72px;}
  .article-title{font-size:32px;}
  .article-layout{grid-template-columns:1fr;gap:0;}
  .article-aside{display:none;}
  .footer-grid{grid-template-columns:1fr 1fr;gap:28px;}
  .nav-main{
    position:absolute;top:72px;left:16px;right:16px;
    flex-direction:column;align-items:stretch;gap:4px;padding:14px;
    background:var(--glass-2);border:1px solid var(--border);border-radius:var(--r-md);
    backdrop-filter:blur(18px);box-shadow:var(--shadow-card);
    display:none;
  }
  .nav-main.is-open{display:flex;}
  .nav-main a{padding:12px 14px;font-size:15px;}
  .nav-main a.is-active::after{display:none;}
  .nav-main a.is-active{background:var(--primary-soft);}
  .nav-toggle{display:inline-flex;margin-left:auto;}
  .nav-cta{display:none;}
}
@media (max-width:767px){
  :root{--section:56px;}
  .container{padding:0 16px;}
  .nav-wrap{height:64px;padding:0 16px;}
  .article-title{font-size:28px;}
  .article-body{font-size:15px;line-height:1.85;}
  .article-body h2{font-size:22px;}
  .prevnext{grid-template-columns:1fr;}
  .footer-grid{grid-template-columns:1fr;gap:0;}
  .footer-col{padding:0;}
  .footer-col + .footer-col{margin-top:6px;}
  .mobile-tabs{display:flex;}
  body{padding-bottom:calc(60px + env(safe-area-inset-bottom));}
  .page-hero .container{padding-top:36px;padding-bottom:32px;}
  .related-thumb{width:96px;height:64px;}
  .btn{height:48px;}
  .btn-sm{height:40px;}
}
@media (max-width:479px){
  .breadcrumb{font-size:12px;}
  .breadcrumb .current{max-width:180px;}
  .related-item{align-items:flex-start;}
  .field-row{flex-direction:column;align-items:stretch;}
  .field-row .btn{width:100%;}
}

/* roulang page: category1 */
:root{
  --bg:#060A12;
  --bg-2:#0A1120;
  --primary:#00E6A8;
  --accent:#FF6B2C;
  --third:#3DDCFF;
  --text:#EAF2FF;
  --text-2:#9FB0C8;
  --text-3:#64748B;
  --glass:rgba(18,32,56,.55);
  --glass-2:rgba(18,32,56,.35);
  --line:rgba(255,255,255,.08);
  --line-strong:rgba(255,255,255,.16);
  --r-lg:20px;
  --r-md:16px;
  --r-sm:12px;
  --r-img:14px;
  --shadow:0 16px 40px -24px rgba(0,0,0,.9);
  --glow:0 0 24px -4px rgba(0,230,168,.45);
  --sec:96px;
  --font:-apple-system,"Noto Sans SC","Source Han Sans SC","PingFang SC","Microsoft YaHei",sans-serif;
}
*,*::before,*::after{box-sizing:border-box}
html{-webkit-text-size-adjust:100%}
body{
  margin:0;
  background:var(--bg);
  color:var(--text);
  font-family:var(--font);
  font-size:16px;
  line-height:1.9;
  letter-spacing:0;
  -webkit-font-smoothing:antialiased;
}
h1,h2,h3,h4,p,ul,ol,figure,blockquote{margin:0}
ul,ol{padding:0;list-style:none}
a{color:inherit;text-decoration:none;transition:color .2s ease}
a:hover{color:var(--primary)}
img{max-width:100%;display:block;border-style:none}
button,input{font-family:inherit;font-size:inherit}
:focus-visible{outline:2px solid var(--primary);outline-offset:2px;border-radius:6px}
.container{width:100%;max-width:1200px;margin:0 auto;padding:0 24px}
.num{font-variant-numeric:tabular-nums;font-weight:700;letter-spacing:-.01em}

/* ---------- header / nav ---------- */
.site-header{
  position:sticky;
  top:0;
  z-index:60;
  background:linear-gradient(180deg,rgba(6,10,18,.92),rgba(6,10,18,.55));
  border-bottom:1px solid transparent;
  transition:background .25s ease,border-color .25s ease,backdrop-filter .25s ease;
}
.site-header.is-scrolled{
  background:rgba(8,14,26,.78);
  backdrop-filter:blur(14px);
  -webkit-backdrop-filter:blur(14px);
  border-bottom-color:var(--line);
}
.nav-wrap{
  display:flex;
  align-items:center;
  gap:24px;
  max-width:1200px;
  margin:0 auto;
  padding:14px 24px;
}
.brand{display:inline-flex;flex-direction:column;line-height:1.15;flex-shrink:0}
.brand-en{font-size:19px;font-weight:800;letter-spacing:-.01em;color:var(--text)}
.brand-cn{font-size:11px;letter-spacing:.14em;color:var(--primary);margin-top:2px}
.brand:hover .brand-en{color:var(--primary)}
.nav-main{display:flex;align-items:center;gap:6px;margin-left:auto}
.nav-main a{
  position:relative;
  padding:8px 12px;
  font-size:14.5px;
  color:var(--text-2);
  border-radius:10px;
  white-space:nowrap;
}
.nav-main a::after{
  content:"";position:absolute;left:12px;right:12px;bottom:2px;height:2px;border-radius:2px;
  background:var(--primary);box-shadow:var(--glow);transform:scaleX(0);transition:transform .2s ease;
}
.nav-main a:hover{color:var(--text);background:rgba(255,255,255,.04)}
.nav-main a.is-active{color:var(--primary)}
.nav-main a.is-active::after{transform:scaleX(1)}
.nav-cta{margin-left:8px}
.nav-toggle{
  display:none;
  width:44px;height:44px;
  border:1px solid var(--line);
  border-radius:var(--r-sm);
  background:var(--glass);
  cursor:pointer;
  position:relative;
}
.nav-toggle span,.nav-toggle span::before,.nav-toggle span::after{
  content:"";position:absolute;left:50%;width:18px;height:2px;border-radius:2px;background:var(--text);
  transform:translateX(-50%);
}
.nav-toggle span{top:21px}
.nav-toggle span::before{top:-6px}
.nav-toggle span::after{top:6px}

/* ---------- buttons ---------- */
.btn{
  display:inline-flex;
  align-items:center;
  justify-content:center;
  gap:8px;
  min-width:120px;
  height:44px;
  padding:0 22px;
  border-radius:var(--r-sm);
  border:1px solid transparent;
  font-size:15px;
  font-weight:600;
  cursor:pointer;
  transition:transform .18s ease,box-shadow .18s ease,background .18s ease,border-color .18s ease,color .18s ease;
}
.btn-primary{
  background:var(--primary);
  color:#04120C;
  box-shadow:var(--glow),inset 0 1px 0 rgba(255,255,255,.5);
}
.btn-primary:hover{transform:translateY(-2px);box-shadow:0 0 32px -2px rgba(0,230,168,.6),inset 0 1px 0 rgba(255,255,255,.5);color:#04120C}
.btn-primary:active{transform:translateY(1px);box-shadow:0 0 14px -6px rgba(0,230,168,.5)}
.btn-ghost{
  background:transparent;
  border-color:rgba(0,230,168,.45);
  color:var(--primary);
}
.btn-ghost:hover{background:rgba(0,230,168,.12);color:var(--primary);transform:translateY(-2px)}
.btn-ghost:active{transform:translateY(1px)}
.btn-text{
  display:inline-flex;align-items:center;gap:6px;
  color:var(--primary);font-weight:600;font-size:15px;
  min-width:0;padding:0;height:auto;background:none;border:0;cursor:pointer;
}
.btn-text .arrow{transition:transform .2s ease}
.btn-text:hover .arrow{transform:translateX(3px)}
.btn-sm{height:38px;min-width:88px;padding:0 16px;font-size:14px}
.btn[disabled],.btn.is-disabled{opacity:.45;pointer-events:none}

/* ---------- badge / pill ---------- */
.badge{
  display:inline-flex;align-items:center;gap:6px;
  padding:3px 12px;border-radius:999px;
  font-size:12px;font-weight:600;letter-spacing:.02em;
  background:rgba(0,230,168,.12);color:var(--primary);
  border:1px solid rgba(0,230,168,.28);
}
.badge-accent{background:rgba(255,107,44,.14);color:#FF9A6B;border-color:rgba(255,107,44,.32)}
.badge-muted{background:rgba(255,255,255,.06);color:var(--text-2);border-color:var(--line)}

/* ---------- hero ---------- */
.cat-hero{
  position:relative;
  overflow:hidden;
  padding:72px 0 64px;
  background-image:linear-gradient(rgba(6,10,18,.84),rgba(6,10,18,.92)),url("/assets/images/backpic/back-1.webp");
  background-size:cover;
  background-position:center;
  border-bottom:1px solid var(--line);
}
.cat-hero::before{
  content:"";position:absolute;inset:0;
  background:
    radial-gradient(48% 60% at 12% 18%,rgba(0,230,168,.20),transparent 70%),
    radial-gradient(42% 54% at 88% 82%,rgba(61,220,255,.14),transparent 72%),
    linear-gradient(rgba(255,255,255,.06) 1px,transparent 1px) 0 0/12px 12px,
    linear-gradient(90deg,rgba(255,255,255,.06) 1px,transparent 1px) 0 0/12px 12px;
  pointer-events:none;
}
.cat-hero .container{position:relative;z-index:1}
.breadcrumb{
  display:flex;align-items:center;gap:8px;
  font-size:13.5px;color:var(--text-3);margin-bottom:20px;flex-wrap:wrap;
}
.breadcrumb a{color:var(--text-2)}
.breadcrumb em{font-style:normal;color:rgba(0,230,168,.75)}
.cat-hero h1{
  font-size:40px;line-height:1.25;font-weight:800;
  max-width:860px;margin-bottom:16px;
}
.cat-hero h1 .hl{
  background:linear-gradient(135deg,var(--primary),var(--third));
  -webkit-background-clip:text;background-clip:text;color:transparent;
  border-bottom:3px solid rgba(0,230,168,.35);
}
.cat-sub{font-size:17px;color:var(--text-2);max-width:640px;margin-bottom:28px}
.cat-actions{display:flex;flex-wrap:wrap;gap:14px;margin-bottom:36px}
.cat-stats{
  display:inline-flex;flex-wrap:wrap;align-items:center;gap:0;
  background:var(--glass);
  border:1px solid var(--line);
  border-radius:var(--r-md);
  backdrop-filter:blur(14px);-webkit-backdrop-filter:blur(14px);
  box-shadow:var(--shadow);
  padding:6px 4px;
}
.stat-item{padding:12px 26px;position:relative}
.stat-item+.stat-item::before{
  content:"";position:absolute;left:0;top:16px;bottom:16px;width:1px;background:var(--line-strong);
}
.stat-num{font-size:24px;color:var(--primary);line-height:1.2;display:block}
.stat-num.c{color:var(--third)}
.stat-label{font-size:13px;color:var(--text-2);display:block;margin-top:2px}

/* ---------- section ---------- */
.section{padding:var(--sec) 0}
.section.alt{background:var(--bg-2);border-top:1px solid var(--line);border-bottom:1px solid var(--line)}
.sec-head{max-width:720px;margin-bottom:44px}
.sec-head h2{font-size:30px;line-height:1.35;font-weight:700;margin-bottom:12px}
.sec-head p{color:var(--text-2);font-size:16px}
.sec-eyebrow{
  display:inline-block;font-size:12px;letter-spacing:.2em;color:var(--primary);
  text-transform:uppercase;margin-bottom:12px;
}

/* ---------- zigzag ---------- */
.zigzag{
  display:grid;grid-template-columns:1fr 1fr;gap:48px;align-items:center;
  margin-bottom:72px;
}
.zigzag:last-child{margin-bottom:0}
.zigzag-media{
  position:relative;border-radius:var(--r-lg);overflow:hidden;
  border:1px solid var(--line);box-shadow:var(--shadow);min-height:300px;
  background:linear-gradient(90deg,rgba(255,255,255,.04),rgba(255,255,255,.10),rgba(255,255,255,.04));
  background-size:200% 100%;
  animation:shimmer 1.8s linear infinite;
}
@keyframes shimmer{to{background-position:-200% 0}}
.zigzag-media img{width:100%;height:320px;object-fit:cover;border-radius:var(--r-lg);position:relative}
.zigzag-media::after{
  content:"";position:absolute;inset:0;pointer-events:none;
  background:linear-gradient(180deg,transparent 45%,rgba(6,10,18,.55));
}
.zigzag.is-reverse .zigzag-media{order:2}
.zigzag-body h2{font-size:26px;line-height:1.4;font-weight:700;margin-bottom:14px}
.zigzag-body p{color:var(--text-2);margin-bottom:18px}
.check-list li{
  display:flex;gap:10px;align-items:flex-start;
  padding:10px 0;color:var(--text-2);font-size:15px;
  border-bottom:1px dashed rgba(255,255,255,.06);
}
.check-list li:last-child{border-bottom:0}
.check-list .ico{
  flex:0 0 18px;width:18px;height:18px;margin-top:5px;color:var(--primary);
}

/* ---------- timeline ---------- */
.timeline{position:relative;padding-left:68px;margin-top:8px}
.timeline::before{
  content:"";position:absolute;left:22px;top:14px;bottom:14px;width:2px;
  background:linear-gradient(180deg,var(--primary),rgba(0,230,168,.06));
}
.tl-item{position:relative;margin-bottom:28px;background:var(--glass);border:1px solid var(--line);
  border-radius:var(--r-md);padding:22px 24px;backdrop-filter:blur(14px);box-shadow:var(--shadow);
  transition:transform .2s ease,border-color .2s ease,box-shadow .2s ease;
}
.tl-item:hover{transform:translateY(-2px);border-color:var(--line-strong);box-shadow:var(--shadow),var(--glow)}
.tl-item:last-child{margin-bottom:0}
.tl-num{
  position:absolute;left:-68px;top:20px;
  width:44px;height:44px;border-radius:50%;
  display:flex;align-items:center;justify-content:center;
  background:rgba(0,230,168,.12);border:1px solid rgba(0,230,168,.4);
  color:var(--primary);font-weight:700;font-size:16px;
}
.tl-item h3{font-size:19px;font-weight:600;margin-bottom:8px}
.tl-item p{color:var(--text-2);font-size:15px}

/* ---------- link cards ---------- */
.linkcards{display:grid;grid-template-columns:repeat(4,1fr);gap:20px}
.linkcard{
  display:flex;flex-direction:column;gap:10px;
  padding:24px;border-radius:var(--r-md);
  background:var(--glass);border:1px solid var(--line);
  backdrop-filter:blur(14px);box-shadow:var(--shadow);
  transition:transform .2s ease,border-color .2s ease,box-shadow .2s ease;
  min-height:180px;
}
.linkcard:hover{transform:translateY(-2px);border-color:rgba(0,230,168,.4);box-shadow:var(--shadow),var(--glow)}
.linkcard h3{font-size:18px;font-weight:600;line-height:1.5}
.linkcard p{font-size:14px;color:var(--text-2);flex:1}
.linkcard .tagline{font-size:12px;color:var(--third)}

/* ---------- faq ---------- */
.faq-wrap{max-width:820px;margin:0 auto}
.faq-item{
  background:var(--glass);border:1px solid var(--line);border-radius:14px;
  margin-bottom:12px;overflow:hidden;backdrop-filter:blur(14px);
  transition:border-color .2s ease,box-shadow .2s ease;
}
.faq-item:hover{border-color:var(--line-strong)}
.faq-item.is-open{border-color:rgba(0,230,168,.35);box-shadow:var(--glow)}
.faq-q{
  width:100%;display:flex;align-items:center;justify-content:space-between;gap:16px;
  padding:20px 24px;background:none;border:0;color:var(--text);
  font-size:16px;font-weight:600;text-align:left;cursor:pointer;line-height:1.6;
}
.faq-icon{
  flex:0 0 20px;width:20px;height:20px;position:relative;color:var(--text-2);
  transition:transform .2s ease,color .2s ease;
}
.faq-icon::before,.faq-icon::after{
  content:"";position:absolute;left:50%;top:50%;background:currentColor;border-radius:2px;
  transform:translate(-50%,-50%);
}
.faq-icon::before{width:14px;height:2px}
.faq-icon::after{width:2px;height:14px}
.faq-item.is-open .faq-icon{transform:rotate(45deg);color:var(--primary)}
.faq-a{max-height:0;overflow:hidden;transition:max-height .2s ease}
.faq-item.is-open .faq-a{max-height:400px}
.faq-a p{padding:0 24px 20px;margin:0;color:var(--text-2);line-height:1.8;font-size:15px}

/* ---------- cta band ---------- */
.cta-section{padding:0 0 var(--sec)}
.cta-band{
  position:relative;overflow:hidden;
  display:flex;align-items:center;justify-content:space-between;gap:32px;
  padding:40px;border-radius:var(--r-lg);
  background:var(--glass);border:1px solid var(--line);
  backdrop-filter:blur(14px);box-shadow:var(--shadow);
}
.cta-band::after{
  content:"";position:absolute;left:0;right:0;bottom:-70px;height:180px;
  background:radial-gradient(60% 100% at 50% 100%,rgba(0,230,168,.30),transparent 70%);
  pointer-events:none;
}
.cta-band h2{font-size:28px;line-height:1.4;font-weight:700;margin-bottom:10px}
.cta-band p{color:var(--text-2);font-size:15px;max-width:560px}
.cta-actions{display:flex;flex-wrap:wrap;gap:14px;position:relative;z-index:1}

/* ---------- footer ---------- */
.site-footer{
  background:var(--bg-2);
  border-top:1px solid var(--line);
  padding:64px 0 0;
}
.footer-grid{display:grid;grid-template-columns:1.4fr 1fr 1fr 1.2fr;gap:36px}
.footer-col summary{
  list-style:none;cursor:pointer;
  display:flex;align-items:center;justify-content:space-between;
  font-size:15px;font-weight:600;color:var(--text);
  padding-bottom:14px;margin-bottom:16px;
  border-bottom:1px solid var(--line);
}
.footer-col summary::-webkit-details-marker{display:none}
.foot-arrow{color:var(--text-3);font-size:16px;transition:transform .2s ease}
.footer-col .brand{padding-bottom:4px}
.foot-list{display:flex;flex-direction:column;gap:8px}
.foot-list p{color:var(--text-2);font-size:14px;line-height:1.85}
.foot-note{color:var(--text-3);font-size:13px}
.footer-col a{
  display:inline-block;font-size:14px;color:var(--text-2);
}
.footer-col a:hover{color:var(--primary);transform:translateX(2px)}
.foot-list address{font-style:normal;color:var(--text-2);font-size:14px;line-height:1.95}
.footer-bottom{
  margin-top:56px;padding:22px 0 26px;
  border-top:1px solid var(--line);
  display:flex;flex-wrap:wrap;align-items:center;gap:10px 18px;
  font-size:13px;color:var(--text-3);
}
.footer-bottom a{color:var(--text-3)}
.footer-bottom a:hover{color:var(--primary)}
.field-row{display:flex;gap:10px}
.field-row input{
  flex:1;min-width:0;height:44px;padding:0 14px;
  background:rgba(255,255,255,.04);
  border:1px solid var(--line);
  border-radius:var(--r-sm);
  color:var(--text);
  transition:border-color .2s ease,box-shadow .2s ease;
}
.field-row input::placeholder{color:var(--text-3)}
.field-row input:focus{
  outline:none;border-color:var(--primary);box-shadow:0 0 0 3px rgba(0,230,168,.16);
}
.field-row input.is-error{border-color:var(--accent);box-shadow:0 0 0 3px rgba(255,107,44,.16)}
.field-row input.is-ok{border-color:var(--primary)}
.field-msg{font-size:13px;color:var(--text-3);margin-top:8px}
.field-msg.is-error{color:#FF9A6B}
.field-msg.is-ok{color:var(--primary)}

/* ---------- mobile tab ---------- */
.mobile-tab{
  display:none;
  position:fixed;left:0;right:0;bottom:0;z-index:70;
  background:rgba(8,14,26,.92);
  backdrop-filter:blur(14px);-webkit-backdrop-filter:blur(14px);
  border-top:1px solid var(--line);
  padding-bottom:env(safe-area-inset-bottom);
}
.mobile-tab ul{display:flex}
.mobile-tab li{flex:1}
.mobile-tab a{
  position:relative;
  display:flex;flex-direction:column;align-items:center;justify-content:center;gap:3px;
  height:60px;font-size:10px;color:var(--text-3);
}
.mobile-tab svg{width:22px;height:22px}
.mobile-tab a.is-active{color:var(--primary)}
.mobile-tab a.is-active::before{
  content:"";position:absolute;top:0;left:50%;transform:translateX(-50%);
  width:26px;height:2px;border-radius:2px;background:var(--primary);box-shadow:var(--glow);
}

/* ---------- responsive ---------- */
@media (max-width:1279px){
  .container{max-width:1120px}
}
@media (max-width:1023px){
  :root{--sec:72px}
  .nav-main{
    position:absolute;top:100%;left:16px;right:16px;
    flex-direction:column;align-items:stretch;gap:4px;
    background:rgba(10,17,32,.96);
    backdrop-filter:blur(16px);
    border:1px solid var(--line);border-radius:var(--r-md);
    padding:12px;margin-left:0;
    box-shadow:var(--shadow);
    display:none;
  }
  .nav-main.is-open{display:flex}
  .nav-main a{padding:12px 14px;font-size:15px}
  .nav-main a::after{display:none}
  .nav-main a.is-active{background:rgba(0,230,168,.10)}
  .nav-toggle{display:block;margin-left:auto;order:3}
  .nav-cta{order:2;margin-left:auto}
  .nav-wrap{position:relative}
  .cat-hero h1{font-size:32px}
  .linkcards{grid-template-columns:repeat(2,1fr)}
  .footer-grid{grid-template-columns:repeat(2,1fr);gap:28px}
  .cta-band{flex-direction:column;align-items:flex-start}
}
@media (max-width:767px){
  :root{--sec:56px}
  body{padding-bottom:60px}
  .container{padding:0 16px}
  .nav-wrap{padding:12px 16px;gap:12px}
  .nav-cta{display:none}
  .mobile-tab{display:block}
  .cat-hero{padding:44px 0 48px}
  .cat-hero h1{font-size:28px}
  .cat-sub{font-size:15px}
  .cat-actions .btn{flex:1 1 100%;min-width:0;height:48px}
  .cat-stats{display:flex;width:100%;flex-direction:row;flex-wrap:wrap}
  .stat-item{padding:10px 16px;flex:1 1 100%;text-align:left}
  .stat-item+.stat-item::before{left:16px;right:16px;top:0;bottom:auto;width:auto;height:1px}
  .sec-head h2{font-size:22px}
  .zigzag{grid-template-columns:1fr;gap:24px;margin-bottom:48px}
  .zigzag.is-reverse .zigzag-media{order:0}
  .zigzag-media img{height:220px}
  .zigzag-body h2{font-size:20px}
  .timeline{padding-left:56px}
  .tl-num{left:-56px;width:38px;height:38px;font-size:14px}
  .tl-item{padding:20px}
  .linkcards{grid-template-columns:1fr}
  .cta-band{padding:26px 20px}
  .cta-band h2{font-size:22px}
  .cta-actions{width:100%}
  .cta-actions .btn{flex:1 1 100%;height:48px}
  .footer-grid{grid-template-columns:1fr;gap:8px}
  .footer-col summary{margin-bottom:10px}
  .footer-bottom{margin-top:32px}
}
@media (max-width:520px){
  .brand-en{font-size:17px}
  .cat-hero h1{font-size:24px;line-height:1.35}
  .stat-num{font-size:20px}
  .faq-q{font-size:15px;padding:18px 20px}
  .faq-a p{padding:0 20px 18px}
}

/* roulang page: category2 */
:root{
  --bg:#060A12;
  --bg-2:#0A1120;
  --primary:#00E6A8;
  --accent:#FF6B2C;
  --cyan:#3DDCFF;
  --text:#EAF2FF;
  --text-2:#9FB0C8;
  --text-3:#64748B;
  --glass:rgba(18,32,56,.55);
  --glass-2:rgba(18,32,56,.75);
  --line:rgba(255,255,255,.08);
  --line-2:rgba(255,255,255,.14);
  --r-lg:20px;
  --r:16px;
  --r-sm:12px;
  --r-img:14px;
  --shadow-card:0 16px 40px -24px rgba(0,0,0,.9);
  --glow:0 0 24px -4px rgba(0,230,168,.45);
  --glow-strong:0 0 34px -2px rgba(0,230,168,.55);
  --gap:24px;
  --sec:96px;
}
*,*::before,*::after{box-sizing:border-box;}
html{-webkit-text-size-adjust:100%;scroll-behavior:smooth;}
body{
  margin:0;
  background:var(--bg);
  color:var(--text);
  font-family:-apple-system,"Noto Sans SC","Source Han Sans SC","PingFang SC","Microsoft YaHei",sans-serif;
  font-size:16px;
  line-height:1.9;
  letter-spacing:0;
  padding-bottom:0;
}
img{max-width:100%;display:block;border-style:none;}
a{color:inherit;text-decoration:none;transition:color .2s ease,opacity .2s ease;}
button,input{font-family:inherit;font-size:inherit;}
button{cursor:pointer;}
h1,h2,h3,h4,p,ul,ol,figure,blockquote{margin:0;}
ul,ol{padding:0;list-style:none;}
:focus-visible{outline:2px solid var(--primary);outline-offset:2px;border-radius:6px;}
::selection{background:rgba(0,230,168,.28);}

.container{width:100%;max-width:1200px;margin:0 auto;padding:0 24px;}
.sec{padding:var(--sec) 0;}
.sec-alt{background:var(--bg-2);}
.sec-head{max-width:760px;margin-bottom:40px;}
.eyebrow{
  display:inline-flex;align-items:center;gap:8px;
  font-size:12px;letter-spacing:.08em;text-transform:uppercase;
  color:var(--primary);background:rgba(0,230,168,.08);
  border:1px solid rgba(0,230,168,.24);border-radius:999px;
  padding:6px 14px;margin-bottom:18px;font-weight:600;
}
h1{font-size:40px;line-height:1.25;font-weight:800;letter-spacing:-.01em;}
h2{font-size:30px;line-height:1.35;font-weight:700;letter-spacing:-.01em;}
h3{font-size:20px;line-height:1.5;font-weight:600;}
.lead{color:var(--text-2);font-size:16px;line-height:1.9;}
.muted{color:var(--text-3);font-size:13px;}
.num{font-variant-numeric:tabular-nums;font-weight:700;letter-spacing:-.01em;}

.grad-text{
  background:linear-gradient(135deg,var(--primary),var(--cyan));
  -webkit-background-clip:text;background-clip:text;color:transparent;
}
.underline-grad{
  position:relative;display:inline;
  background:linear-gradient(135deg,var(--primary),var(--cyan));
  -webkit-background-clip:text;background-clip:text;color:transparent;
  box-shadow:inset 0 -10px 0 rgba(0,230,168,.14);
}

/* ---------- 按钮 ---------- */
.btn{
  display:inline-flex;align-items:center;justify-content:center;gap:8px;
  height:44px;min-width:120px;padding:0 22px;
  border-radius:var(--r-sm);border:1px solid transparent;
  font-size:15px;font-weight:600;line-height:1;
  transition:transform .2s ease,box-shadow .2s ease,background .2s ease,border-color .2s ease,color .2s ease;
  white-space:nowrap;
}
.btn-primary{
  background:linear-gradient(135deg,var(--primary),var(--cyan));
  color:#04120C;box-shadow:var(--glow);
  border-color:rgba(255,255,255,.28);
}
.btn-primary:hover{transform:translateY(-2px);box-shadow:var(--glow-strong);}
.btn-primary:active{transform:translateY(1px);box-shadow:0 0 14px -6px rgba(0,230,168,.4);}
.btn-ghost{
  background:transparent;color:var(--primary);
  border-color:rgba(0,230,168,.45);
}
.btn-ghost:hover{background:rgba(0,230,168,.12);transform:translateY(-2px);}
.btn-ghost:active{transform:translateY(1px);background:rgba(0,230,168,.06);}
.btn-sm{height:38px;min-width:96px;padding:0 16px;font-size:14px;}
.btn-block{width:100%;}
.btn[disabled],.btn.is-disabled{opacity:.45;pointer-events:none;}
.link-arrow{
  display:inline-flex;align-items:center;gap:6px;
  color:var(--primary);font-weight:600;font-size:14px;
}
.link-arrow .arw{transition:transform .2s ease;}
.link-arrow:hover .arw{transform:translateX(3px);}

/* ---------- 导航 ---------- */
.site-header{
  position:sticky;top:0;z-index:60;
  background:rgba(6,10,18,.55);
  backdrop-filter:blur(14px);-webkit-backdrop-filter:blur(14px);
  border-bottom:1px solid transparent;
  transition:background .25s ease,border-color .25s ease;
}
.site-header.is-scrolled{
  background:rgba(8,14,26,.86);
  border-bottom-color:var(--line);
}
.nav-wrap{
  display:flex;align-items:center;gap:22px;
  max-width:1200px;margin:0 auto;padding:14px 24px;
}
.brand{display:flex;flex-direction:column;line-height:1.15;flex-shrink:0;}
.brand-en{font-size:19px;font-weight:800;color:var(--text);letter-spacing:-.01em;}
.brand-cn{font-size:11px;font-weight:600;color:var(--primary);letter-spacing:.06em;}
.nav-main{display:flex;align-items:center;gap:6px;margin-left:auto;}
.nav-main a{
  position:relative;padding:10px 12px;border-radius:10px;
  font-size:14.5px;color:var(--text-2);font-weight:500;
}
.nav-main a:hover{color:var(--text);background:rgba(255,255,255,.04);}
.nav-main a.is-active{color:var(--primary);}
.nav-main a.is-active::after{
  content:"";position:absolute;left:12px;right:12px;bottom:2px;height:2px;
  border-radius:2px;background:var(--primary);box-shadow:var(--glow);
}
.nav-cta{margin-left:10px;}
.nav-toggle{
  display:none;margin-left:auto;
  width:44px;height:44px;border-radius:var(--r-sm);
  background:var(--glass);border:1px solid var(--line);
  position:relative;
}
.nav-toggle span,.nav-toggle span::before,.nav-toggle span::after{
  position:absolute;left:50%;transform:translateX(-50%);
  width:18px;height:2px;border-radius:2px;background:var(--text);
  content:"";
}
.nav-toggle span{top:50%;margin-top:-1px;}
.nav-toggle span::before{top:-6px;}
.nav-toggle span::after{top:6px;}

/* ---------- 移动底部 Tab ---------- */
.mobile-tab{
  display:none;position:fixed;left:0;right:0;bottom:0;z-index:70;
  background:rgba(8,14,26,.94);backdrop-filter:blur(16px);
  border-top:1px solid var(--line);
  padding-bottom:env(safe-area-inset-bottom);
}
.mobile-tab ul{display:flex;}
.mobile-tab li{flex:1;}
.mobile-tab a{
  position:relative;display:flex;flex-direction:column;align-items:center;justify-content:center;
  gap:4px;height:60px;font-size:10px;color:var(--text-3);
}
.mobile-tab a svg{width:22px;height:22px;stroke:currentColor;fill:none;stroke-width:1.7;}
.mobile-tab a.is-active{color:var(--primary);}
.mobile-tab a.is-active::before{
  content:"";position:absolute;top:0;left:22%;right:22%;height:2px;
  background:var(--primary);box-shadow:var(--glow);border-radius:2px;
}

/* ---------- Hero（小版） ---------- */
.hero-sub{
  position:relative;overflow:hidden;
  padding:72px 0 64px;
  background-image:url("/assets/images/backpic/back-2.webp");
  background-size:cover;background-position:center;
}
.hero-sub::before{
  content:"";position:absolute;inset:0;
  background:
    radial-gradient(760px 380px at 16% 18%,rgba(0,230,168,.22),transparent 62%),
    linear-gradient(180deg,rgba(6,10,18,.84),rgba(6,10,18,.94));
}
.hero-sub::after{
  content:"";position:absolute;inset:0;
  background-image:linear-gradient(rgba(255,255,255,.06) 1px,transparent 1px),
                   linear-gradient(90deg,rgba(255,255,255,.06) 1px,transparent 1px);
  background-size:12px 12px;opacity:.5;
}
.hero-inner{position:relative;z-index:2;max-width:860px;}
.crumb{display:flex;flex-wrap:wrap;align-items:center;gap:8px;font-size:13.5px;color:var(--text-3);margin-bottom:18px;}
.crumb a{color:var(--text-2);}
.crumb a:hover{color:var(--primary);}
.crumb .sep{color:var(--text-3);opacity:.7;}
.crumb .now{color:rgba(0,230,168,.85);}
.hero-sub h1{margin-bottom:16px;}
.hero-sub .lead{max-width:640px;font-size:16.5px;}
.hero-actions{display:flex;flex-wrap:wrap;gap:14px;margin-top:26px;}
.key-stats{
  display:flex;flex-wrap:wrap;align-items:center;gap:0;
  margin-top:34px;background:var(--glass);border:1px solid var(--line);
  border-radius:999px;padding:14px 22px;backdrop-filter:blur(14px);
  box-shadow:var(--shadow-card);max-width:820px;
}
.key-stats .kv{display:flex;flex-direction:column;gap:2px;padding:0 22px;}
.key-stats .kv:first-child{padding-left:6px;}
.key-stats .kv + .kv{border-left:1px solid var(--line);}
.key-stats .num{font-size:20px;color:var(--primary);}
.key-stats span.lb{font-size:12.5px;color:var(--text-3);}

/* ---------- 双栏正文 ---------- */
.split{display:grid;grid-template-columns:250px 1fr;gap:48px;align-items:start;}
.toc{
  position:sticky;top:96px;
  background:var(--glass);border:1px solid var(--line);
  border-radius:var(--r);padding:22px;box-shadow:var(--shadow-card);
  backdrop-filter:blur(14px);
}
.toc h3{font-size:14px;color:var(--text-2);font-weight:600;letter-spacing:.04em;margin-bottom:14px;}
.toc ol{display:flex;flex-direction:column;gap:2px;counter-reset:toc;}
.toc li{counter-increment:toc;}
.toc a{
  display:flex;gap:10px;align-items:baseline;
  padding:9px 10px;border-radius:10px;font-size:14px;color:var(--text-2);
}
.toc a::before{content:counter(toc,decimal-leading-zero);color:var(--text-3);font-size:12px;font-variant-numeric:tabular-nums;}
.toc a:hover{background:rgba(255,255,255,.04);color:var(--primary);}
.toc a.is-current{background:rgba(0,230,168,.1);color:var(--primary);}
.toc .toc-foot{margin-top:16px;padding-top:16px;border-top:1px solid var(--line);}

.longform{display:flex;flex-direction:column;gap:26px;}
.seg{
  background:var(--glass);border:1px solid var(--line);border-radius:var(--r);
  padding:28px;box-shadow:var(--shadow-card);
  transition:transform .22s ease,border-color .22s ease,box-shadow .22s ease;
}
.seg:hover{transform:translateY(-2px);border-color:var(--line-2);box-shadow:var(--shadow-card),var(--glow);}
.seg-head{display:flex;align-items:center;gap:14px;margin-bottom:14px;}
.seg-ico{
  width:42px;height:42px;flex-shrink:0;border-radius:12px;
  display:flex;align-items:center;justify-content:center;
  background:rgba(0,230,168,.1);border:1px solid rgba(0,230,168,.26);
}
.seg-ico svg{width:20px;height:20px;stroke:var(--primary);fill:none;stroke-width:1.7;}
.seg h2{font-size:22px;}
.seg p{color:var(--text-2);margin-top:12px;}
.seg p strong{color:var(--text);font-weight:600;}
.seg-figure{margin-top:20px;border-radius:var(--r-img);overflow:hidden;border:1px solid var(--line);}
.seg-figure img{width:100%;aspect-ratio:16/9;object-fit:cover;}
.box-check{display:flex;flex-direction:column;gap:10px;margin-top:16px;}
.box-check li{display:flex;gap:10px;align-items:flex-start;font-size:14.5px;color:var(--text-2);}
.box-check li .tick{
  width:18px;height:18px;flex-shrink:0;margin-top:5px;border-radius:50%;
  background:rgba(0,230,168,.16);border:1px solid rgba(0,230,168,.4);
  display:flex;align-items:center;justify-content:center;
}
.box-check li .tick svg{width:11px;height:11px;stroke:var(--primary);stroke-width:2.6;fill:none;}

/* ---------- 权益明细列表 ---------- */
.detail-scroll{
  overflow-x:auto;border-radius:var(--r);
  border:1px solid var(--line);background:var(--glass);
  box-shadow:var(--shadow-card);
  -webkit-overflow-scrolling:touch;
}
.detail-table{min-width:780px;width:100%;}
.detail-row{
  display:grid;grid-template-columns:1.7fr repeat(4,1fr);
  align-items:center;padding:16px 22px;
  border-bottom:1px solid var(--line);
  transition:background .18s ease;
}
.detail-row:last-child{border-bottom:none;}
.detail-row:hover{background:rgba(255,255,255,.04);}
.detail-row.head{
  background:rgba(0,230,168,.06);
  font-size:13.5px;color:var(--text-2);font-weight:600;
}
.detail-row.head .col-reco{color:var(--accent);}
.detail-name{display:flex;align-items:center;gap:10px;font-size:15px;color:var(--text);}
.detail-name svg{width:16px;height:16px;stroke:var(--cyan);fill:none;stroke-width:1.6;flex-shrink:0;}
.cell{display:flex;justify-content:center;}
.yes{
  width:22px;height:22px;border-radius:50%;
  background:rgba(0,230,168,.14);border:1px solid rgba(0,230,168,.42);
  display:flex;align-items:center;justify-content:center;
}
.yes svg{width:12px;height:12px;stroke:var(--primary);stroke-width:2.8;fill:none;}
.no{width:14px;height:2px;border-radius:2px;background:rgba(255,255,255,.16);}
.scroll-hint{display:none;font-size:12.5px;color:var(--text-3);margin-top:10px;text-align:right;}

/* 空态 */
.empty-state{
  min-height:220px;display:flex;flex-direction:column;align-items:center;justify-content:center;
  gap:12px;text-align:center;padding:32px;
  background:var(--glass);border:1px dashed var(--line-2);
  border-radius:var(--r);color:var(--text-2);
}
.empty-state svg{width:34px;height:34px;stroke:var(--text-3);fill:none;stroke-width:1.5;}
.empty-state p{font-size:14.5px;color:var(--text-2);}

/* ---------- 常见疑问 ---------- */
.faq-list{max-width:820px;margin:0 auto;display:flex;flex-direction:column;gap:12px;}
.faq-item{
  background:var(--glass);border:1px solid var(--line);
  border-radius:14px;overflow:hidden;
  transition:border-color .2s ease,box-shadow .2s ease,background .2s ease;
}
.faq-item:hover{border-color:var(--line-2);}
.faq-item[open]{border-color:rgba(0,230,168,.32);box-shadow:var(--glow);}
.faq-item summary{
  display:flex;align-items:center;justify-content:space-between;gap:18px;
  padding:18px 24px;cursor:pointer;list-style:none;
  font-size:16px;font-weight:600;color:var(--text);
}
.faq-item summary::-webkit-details-marker{display:none;}
.faq-item summary .plus{
  position:relative;width:20px;height:20px;flex-shrink:0;
  transition:transform .2s ease,color .2s ease;
}
.faq-item summary .plus::before,
.faq-item summary .plus::after{
  content:"";position:absolute;left:50%;top:50%;transform:translate(-50%,-50%);
  background:var(--text-2);border-radius:2px;
}
.faq-item summary .plus::before{width:14px;height:2px;}
.faq-item summary .plus::after{width:2px;height:14px;}
.faq-item[open] summary .plus{transform:rotate(45deg);}
.faq-item[open] summary .plus::before,
.faq-item[open] summary .plus::after{background:var(--primary);}
.faq-body{padding:0 24px 20px;color:var(--text-2);font-size:15px;line-height:1.8;}

/* ---------- CTA ---------- */
.cta-band{
  position:relative;overflow:hidden;
  background:var(--glass-2);border:1px solid var(--line);
  border-radius:var(--r-lg);padding:40px;box-shadow:var(--shadow-card);
  backdrop-filter:blur(14px);
}
.cta-band::after{
  content:"";position:absolute;left:10%;right:10%;bottom:-70px;height:150px;
  background:radial-gradient(closest-side,rgba(0,230,168,.45),transparent);
  filter:blur(30px);pointer-events:none;
}
.cta-inner{
  position:relative;z-index:2;
  display:flex;align-items:center;justify-content:space-between;gap:32px;flex-wrap:wrap;
}
.cta-inner h2{font-size:26px;margin-bottom:8px;}
.cta-inner p{color:var(--text-2);font-size:15px;max-width:560px;}
.cta-actions{display:flex;align-items:center;gap:16px;flex-wrap:wrap;}

/* ---------- 页脚 ---------- */
.site-footer{
  margin-top:60px;background:var(--bg-2);
  border-top:1px solid var(--line);padding:64px 0 0;
}
.footer-grid{display:grid;grid-template-columns:repeat(4,1fr);gap:36px;}
.footer-col details summary{
  list-style:none;cursor:pointer;font-size:15px;font-weight:600;color:var(--text);
  display:flex;align-items:center;justify-content:space-between;gap:10px;margin-bottom:16px;
}
.footer-col details summary::-webkit-details-marker{display:none;}
.foot-arrow{color:var(--primary);font-size:14px;transition:transform .2s ease;display:none;}
.foot-list{display:flex;flex-direction:column;gap:12px;}
.foot-list li{font-size:14px;}
.foot-list a{color:var(--text-2);font-size:14px;display:inline-block;transition:color .2s ease,transform .2s ease;}
.foot-list a:hover{color:var(--primary);transform:translateX(2px);}
.follow .brand{margin-bottom:12px;}
.follow p,.footer-brand p{font-size:14px;color:var(--text-2);line-height:1.8;}
.foot-note{color:var(--text-3)!important;font-size:13px!important;}
.site-footer address{font-style:normal;font-size:14px;color:var(--text-2);line-height:2;}
.field-row{display:flex;gap:10px;align-items:center;}
.field-row input{
  flex:1;height:44px;padding:0 14px;border-radius:var(--r-sm);
  background:rgba(255,255,255,.04);border:1px solid var(--line);
  color:var(--text);font-size:14px;min-width:0;
  transition:border-color .2s ease,box-shadow .2s ease;
}
.field-row input::placeholder{color:var(--text-3);}
.field-row input:focus{
  outline:none;border-color:var(--primary);
  box-shadow:0 0 0 3px rgba(0,230,168,.16);
}
.field-row input.is-error{border-color:var(--accent);}
.field-row input.is-ok{border-color:var(--primary);}
.field-msg{font-size:13px;color:var(--text-3);margin-top:8px;}
.field-msg.is-error{color:var(--accent);}
.field-msg.is-ok{color:var(--primary);}
.footer-bottom{
  margin-top:48px;padding:22px 0 26px;border-top:1px solid var(--line);
  display:flex;flex-wrap:wrap;gap:14px;align-items:center;justify-content:space-between;
  font-size:13px;color:var(--text-3);
}
.footer-bottom .minor-links{display:flex;flex-wrap:wrap;gap:16px;}
.footer-bottom .minor-links a:hover{color:var(--primary);}

/* ---------- 加载与骨架 ---------- */
.skeleton{
  background:linear-gradient(90deg,rgba(255,255,255,.04) 25%,rgba(255,255,255,.1) 37%,rgba(255,255,255,.04) 63%);
  background-size:400% 100%;animation:sweep 1.4s ease infinite;border-radius:8px;
}
@keyframes sweep{0%{background-position:100% 50%;}100%{background-position:0 50%;}}

/* ---------- 响应式 ---------- */
@media (max-width:1279px){
  .container{padding:0 24px;}
}
@media (max-width:1023px){
  :root{--sec:72px;}
  h1{font-size:32px;}
  h2{font-size:26px;}
  .split{grid-template-columns:1fr;gap:28px;}
  .toc{position:static;}
  .footer-grid{grid-template-columns:repeat(2,1fr);}
  .foot-arrow{display:inline;}
  .footer-col details summary + .foot-list{display:none;}
  .footer-col details[open] summary + .foot-list{display:flex;}
}
@media (max-width:767px){
  :root{--sec:56px;}
  body{padding-bottom:60px;}
  .nav-main{
    display:none;position:absolute;left:16px;right:16px;top:70px;
    flex-direction:column;align-items:stretch;gap:4px;
    background:var(--glass-2);border:1px solid var(--line);
    border-radius:var(--r);padding:12px;backdrop-filter:blur(16px);
    box-shadow:var(--shadow-card);
  }
  .site-header.is-open .nav-main{display:flex;}
  .nav-main a{padding:12px 14px;font-size:15px;}
  .nav-main a.is-active::after{display:none;}
  .nav-main a.is-active{background:rgba(0,230,168,.1);}
  .nav-cta{display:none;}
  .nav-toggle{display:block;}
  .mobile-tab{display:block;}
  .nav-wrap{padding:12px 16px;}
  h1{font-size:28px;}
  h2{font-size:22px;}
  h3{font-size:18px;}
  body{font-size:15px;line-height:1.85;}
  .hero-sub{padding:52px 0 48px;}
  .key-stats{border-radius:var(--r);flex-direction:column;align-items:stretch;gap:0;padding:6px 20px;}
  .key-stats .kv{padding:12px 0;}
  .key-stats .kv + .kv{border-left:none;border-top:1px solid var(--line);}
  .seg{padding:22px;}
  .scroll-hint{display:block;}
  .cta-band{padding:26px;}
  .cta-inner h2{font-size:22px;}
  .cta-actions{width:100%;}
  .cta-actions .btn{width:100%;}
  .faq-item summary{padding:16px 18px;font-size:15px;}
  .faq-body{padding:0 18px 18px;}
  .footer-grid{grid-template-columns:1fr;gap:0;}
  .footer-bottom{justify-content:flex-start;}
}
@media (max-width:479px){
  .container{padding:0 16px;}
  .hero-actions .btn{width:100%;}
  .detail-row{padding:14px 18px;}
}

/* roulang page: category3 */
:root{
  --bg:#060A12;
  --bg-2:#0A1120;
  --primary:#00E6A8;
  --primary-deep:#04120C;
  --accent:#FF6B2C;
  --cyan:#3DDCFF;
  --text:#EAF2FF;
  --text-2:#9FB0C8;
  --text-3:#64748B;
  --glass:rgba(18,32,56,.55);
  --glass-2:rgba(18,32,56,.78);
  --line:rgba(255,255,255,.08);
  --line-2:rgba(255,255,255,.16);
  --r-lg:20px;
  --r-md:16px;
  --r-sm:12px;
  --r-img:14px;
  --r-pill:999px;
  --shadow-card:0 16px 40px -24px rgba(0,0,0,.9);
  --glow:0 0 24px -4px rgba(0,230,168,.45);
  --glow-strong:0 0 34px -2px rgba(0,230,168,.55);
  --section-y:96px;
  --container:1200px;
  --grad:linear-gradient(135deg,#00E6A8,#3DDCFF);
}
*,*::before,*::after{box-sizing:border-box;}
html{-webkit-text-size-adjust:100%;scroll-behavior:smooth;}
body{
  margin:0;
  background:var(--bg);
  color:var(--text);
  font-family:-apple-system,"Noto Sans SC","Source Han Sans SC","PingFang SC","Microsoft YaHei",sans-serif;
  font-size:16px;
  line-height:1.9;
  letter-spacing:0;
  -webkit-font-smoothing:antialiased;
  overflow-x:hidden;
  padding-bottom:72px;
}
img{max-width:100%;display:block;}
a{color:inherit;text-decoration:none;}
button,input{font-family:inherit;font-size:inherit;color:inherit;}
button{cursor:pointer;border:none;background:none;}
ul,ol{margin:0;padding:0;list-style:none;}
h1,h2,h3,h4,p{margin:0;}
:focus-visible{outline:2px solid var(--primary);outline-offset:2px;border-radius:6px;}

.container{
  width:100%;
  max-width:var(--container);
  margin:0 auto;
  padding:0 24px;
}
.section{
  padding:var(--section-y) 0;
  position:relative;
}
.section-alt{background:var(--bg-2);}
.section-head{
  display:flex;
  align-items:flex-end;
  justify-content:space-between;
  gap:24px;
  margin-bottom:40px;
  flex-wrap:wrap;
}
.section-head h2{
  font-size:30px;
  line-height:1.35;
  font-weight:700;
}
.section-head p{
  color:var(--text-2);
  font-size:15px;
  max-width:560px;
}
.eyebrow{
  display:inline-flex;
  align-items:center;
  gap:8px;
  font-size:12px;
  letter-spacing:.14em;
  color:var(--primary);
  text-transform:uppercase;
  margin-bottom:14px;
}
.eyebrow::before{
  content:"";
  width:22px;height:2px;border-radius:2px;
  background:var(--grad);
}

/* ---------- 导航 ---------- */
.nav-wrap{
  position:sticky;
  top:0;
  z-index:60;
  display:flex;
  align-items:center;
  justify-content:space-between;
  gap:20px;
  padding:14px 24px;
  background:rgba(6,10,18,.72);
  backdrop-filter:blur(14px);
  -webkit-backdrop-filter:blur(14px);
  border-bottom:1px solid var(--line);
  transition:background .3s ease,border-color .3s ease,padding .3s ease;
}
.nav-wrap.is-scrolled{
  background:rgba(10,17,32,.86);
  border-bottom-color:var(--line-2);
  padding:10px 24px;
}
.brand{
  display:flex;
  flex-direction:column;
  line-height:1.15;
  gap:2px;
}
.brand-en{
  font-size:19px;
  font-weight:800;
  letter-spacing:-.01em;
  background:var(--grad);
  -webkit-background-clip:text;
  background-clip:text;
  color:transparent;
}
.brand-cn{
  font-size:11px;
  color:var(--text-2);
  letter-spacing:.08em;
}
.nav-main{
  display:flex;
  align-items:center;
  gap:26px;
  font-size:15px;
}
.nav-main a{
  position:relative;
  color:var(--text-2);
  padding:6px 0;
  transition:color .2s ease;
  white-space:nowrap;
}
.nav-main a::after{
  content:"";
  position:absolute;
  left:0;right:0;bottom:-2px;
  height:2px;
  border-radius:2px;
  background:var(--grad);
  opacity:0;
  transform:scaleX(.4);
  transition:opacity .2s ease,transform .2s ease;
}
.nav-main a:hover{color:var(--text);}
.nav-main a:hover::after,
.nav-main a.is-active::after{opacity:1;transform:scaleX(1);}
.nav-main a.is-active{
  color:var(--primary);
}
.nav-main a.is-active::after{box-shadow:var(--glow);}
.nav-cta{white-space:nowrap;}

.btn{
  display:inline-flex;
  align-items:center;
  justify-content:center;
  gap:8px;
  height:44px;
  min-width:120px;
  padding:0 22px;
  border-radius:var(--r-sm);
  font-size:15px;
  font-weight:600;
  transition:transform .2s ease,box-shadow .2s ease,background .2s ease,border-color .2s ease,color .2s ease;
  white-space:nowrap;
}
.btn-primary{
  background:var(--grad);
  color:var(--primary-deep);
  border:1px solid rgba(255,255,255,.22);
  box-shadow:var(--glow);
}
.btn-primary:hover{
  transform:translateY(-2px);
  box-shadow:var(--glow-strong);
}
.btn-primary:active{transform:translateY(1px);box-shadow:0 0 12px -4px rgba(0,230,168,.3);}
.btn-ghost{
  background:rgba(0,230,168,.02);
  color:var(--primary);
  border:1px solid rgba(0,230,168,.42);
}
.btn-ghost:hover{
  background:rgba(0,230,168,.12);
  transform:translateY(-2px);
}
.btn-ghost:active{transform:translateY(1px);}
.btn-sm{height:38px;min-width:96px;padding:0 16px;font-size:14px;}
.btn-block{width:100%;}
.btn[disabled],.btn.is-disabled{
  opacity:.45;
  pointer-events:none;
}
.link-more{
  display:inline-flex;
  align-items:center;
  gap:6px;
  color:var(--primary);
  font-size:14px;
  font-weight:600;
}
.link-more .arrow{transition:transform .2s ease;display:inline-block;}
.link-more:hover .arrow{transform:translateX(3px);}

.nav-toggle{
  display:none;
  width:44px;height:44px;
  border-radius:var(--r-sm);
  border:1px solid var(--line-2);
  align-items:center;
  justify-content:center;
  background:var(--glass);
}
.nav-toggle span,
.nav-toggle span::before,
.nav-toggle span::after{
  content:"";
  display:block;
  width:18px;height:2px;
  border-radius:2px;
  background:var(--text);
  transition:transform .2s ease,opacity .2s ease;
}
.nav-toggle span::before{transform:translateY(-6px);}
.nav-toggle span::after{transform:translateY(4px);}
.nav-toggle[aria-expanded="true"] span{background:transparent;}
.nav-toggle[aria-expanded="true"] span::before{transform:rotate(45deg);}
.nav-toggle[aria-expanded="true"] span::after{transform:rotate(-45deg) translateY(-2px);}

/* ---------- Hero 小版 ---------- */
.hero-small{
  position:relative;
  padding:72px 0 64px;
  background-image:url('/assets/images/backpic/back-3.png');
  background-size:cover;
  background-position:center;
  overflow:hidden;
}
.hero-small::before{
  content:"";
  position:absolute;
  inset:0;
  background:linear-gradient(180deg,rgba(6,10,18,.82),rgba(6,10,18,.92)),
             radial-gradient(60% 70% at 18% 20%,rgba(0,230,168,.20),transparent 62%),
             radial-gradient(50% 60% at 88% 10%,rgba(61,220,255,.16),transparent 60%);
}
.hero-small::after{
  content:"";
  position:absolute;
  inset:0;
  background-image:linear-gradient(rgba(255,255,255,.06) 1px,transparent 1px),
                   linear-gradient(90deg,rgba(255,255,255,.06) 1px,transparent 1px);
  background-size:12px 12px;
  opacity:.5;
  mask-image:linear-gradient(180deg,rgba(0,0,0,.8),transparent 82%);
  -webkit-mask-image:linear-gradient(180deg,rgba(0,0,0,.8),transparent 82%);
}
.hero-inner{
  position:relative;
  z-index:2;
  max-width:820px;
}
.crumb{
  display:flex;
  align-items:center;
  gap:8px;
  font-size:13px;
  color:var(--text-3);
  margin-bottom:20px;
  flex-wrap:wrap;
}
.crumb a{color:var(--text-2);}
.crumb a:hover{color:var(--primary);}
.crumb .sep{color:var(--text-3);}
.crumb .current{color:rgba(0,230,168,.75);}
.hero-small h1{
  font-size:40px;
  line-height:1.25;
  font-weight:800;
  letter-spacing:0;
  margin-bottom:16px;
}
.hero-small h1 .hl{
  background:var(--grad);
  -webkit-background-clip:text;
  background-clip:text;
  color:transparent;
  position:relative;
}
.hero-small h1 .hl::after{
  content:"";
  position:absolute;
  left:0;right:0;bottom:2px;
  height:6px;
  border-radius:6px;
  background:var(--grad);
  opacity:.22;
}
.hero-sub{
  font-size:17px;
  color:var(--text-2);
  max-width:660px;
}
.hero-stats{
  display:flex;
  flex-wrap:wrap;
  gap:28px;
  margin-top:34px;
  padding-top:26px;
  border-top:1px solid var(--line);
}
.hero-stats .item{
  min-width:120px;
}
.hero-stats .num{
  font-size:26px;
  font-weight:700;
  font-variant-numeric:tabular-nums;
  color:var(--cyan);
  line-height:1.2;
}
.hero-stats .lbl{
  font-size:13px;
  color:var(--text-3);
  margin-top:4px;
}

/* ---------- 卡片网格 ---------- */
.posts-grid{
  display:grid;
  grid-template-columns:repeat(6,1fr);
  gap:24px;
}
.card{
  position:relative;
  background:var(--glass);
  border:1px solid var(--line);
  border-radius:var(--r-md);
  box-shadow:var(--shadow-card);
  backdrop-filter:blur(14px);
  -webkit-backdrop-filter:blur(14px);
  overflow:hidden;
  transition:transform .25s ease,border-color .25s ease,box-shadow .25s ease;
}
.card:hover{
  transform:translateY(-2px);
  border-color:var(--line-2);
  box-shadow:var(--shadow-card),var(--glow);
}
.card-media{
  position:relative;
  border-radius:var(--r-img);
  overflow:hidden;
  background:linear-gradient(100deg,rgba(255,255,255,.05),rgba(255,255,255,.12),rgba(255,255,255,.05));
  background-size:200% 100%;
  animation:shimmer 2.6s infinite linear;
}
@keyframes shimmer{
  0%{background-position:120% 0;}
  100%{background-position:-120% 0;}
}
.card-media img{
  width:100%;
  height:100%;
  object-fit:cover;
  transition:transform .35s ease;
}
.card:hover .card-media img{transform:scale(1.02);}
.card-media::after{
  content:"";
  position:absolute;
  inset:0;
  background:linear-gradient(180deg,rgba(6,10,18,0) 40%,rgba(6,10,18,.72));
  pointer-events:none;
}
.feature-card{
  grid-column:span 3;
  padding:0;
}
.feature-card .card-media{
  border-radius:0;
  aspect-ratio:16/9;
}
.feature-card .card-body{
  padding:24px;
}
.mini-card{
  grid-column:span 2;
  padding:0;
  display:flex;
  flex-direction:column;
}
.mini-card .card-media{
  border-radius:0;
  aspect-ratio:16/10;
}
.mini-card .card-body{
  padding:20px;
  display:flex;
  flex-direction:column;
  gap:10px;
  flex:1;
}
.tag-row{
  display:flex;
  align-items:center;
  gap:10px;
  flex-wrap:wrap;
}
.pill{
  display:inline-flex;
  align-items:center;
  height:24px;
  padding:0 10px;
  border-radius:var(--r-pill);
  font-size:12px;
  letter-spacing:.02em;
  border:1px solid rgba(0,230,168,.32);
  color:var(--primary);
  background:rgba(0,230,168,.08);
}
.pill.pill-cyan{
  border-color:rgba(61,220,255,.32);
  color:var(--cyan);
  background:rgba(61,220,255,.08);
}
.card h3{
  font-size:20px;
  line-height:1.5;
  font-weight:600;
}
.mini-card h3{font-size:17px;line-height:1.55;}
.card .excerpt{
  color:var(--text-2);
  font-size:14px;
  line-height:1.85;
  display:-webkit-box;
  -webkit-line-clamp:2;
  -webkit-box-orient:vertical;
  overflow:hidden;
}
.card-foot{
  display:flex;
  align-items:center;
  justify-content:space-between;
  gap:12px;
  margin-top:auto;
  padding-top:12px;
  border-top:1px solid var(--line);
  font-size:13px;
  color:var(--text-3);
  font-variant-numeric:tabular-nums;
}
.mini-card .card-foot{padding-top:10px;}

/* ---------- 标签筛选条 + 时间线 ---------- */
.filter-bar{
  display:flex;
  align-items:center;
  gap:12px;
  flex-wrap:wrap;
  padding:16px;
  border:1px solid var(--line);
  border-radius:var(--r-md);
  background:var(--glass);
  backdrop-filter:blur(14px);
  -webkit-backdrop-filter:blur(14px);
  margin-bottom:36px;
}
.chip{
  display:inline-flex;
  align-items:center;
  gap:6px;
  height:34px;
  padding:0 14px;
  border-radius:var(--r-pill);
  font-size:13px;
  color:var(--text-2);
  border:1px solid var(--line);
  background:rgba(255,255,255,.02);
  transition:color .2s ease,border-color .2s ease,background .2s ease,transform .2s ease;
}
.chip:hover{
  color:var(--text);
  border-color:var(--line-2);
  transform:translateY(-1px);
}
.chip.is-on{
  color:var(--primary-deep);
  background:var(--grad);
  border-color:transparent;
  font-weight:600;
  box-shadow:var(--glow);
}
.timeline{
  display:grid;
  grid-template-columns:repeat(3,1fr);
  gap:24px;
}
.tl-item{
  position:relative;
  padding:22px 22px 22px 26px;
  border-radius:var(--r-md);
  border:1px solid var(--line);
  background:var(--glass);
  backdrop-filter:blur(14px);
  -webkit-backdrop-filter:blur(14px);
  box-shadow:var(--shadow-card);
  transition:transform .25s ease,border-color .25s ease;
}
.tl-item:hover{transform:translateY(-2px);border-color:var(--line-2);}
.tl-item::before{
  content:"";
  position:absolute;
  left:0;top:22px;bottom:22px;
  width:4px;
  border-radius:4px;
  background:var(--grad);
  opacity:.85;
}
.tl-date{
  font-size:13px;
  color:var(--cyan);
  font-variant-numeric:tabular-nums;
  font-weight:700;
}
.tl-item h3{
  font-size:17px;
  font-weight:600;
  margin:8px 0 8px;
  line-height:1.5;
}
.tl-item p{
  font-size:14px;
  color:var(--text-2);
  line-height:1.8;
}

/* ---------- 内链入口区 ---------- */
.link-cards{
  display:grid;
  grid-template-columns:repeat(3,1fr);
  gap:24px;
}
.link-card{
  padding:26px 24px;
  border-radius:var(--r-md);
  border:1px solid var(--line);
  background:linear-gradient(160deg,rgba(18,32,56,.7),rgba(10,17,32,.55));
  backdrop-filter:blur(14px);
  -webkit-backdrop-filter:blur(14px);
  box-shadow:var(--shadow-card);
  transition:transform .25s ease,border-color .25s ease,box-shadow .25s ease;
  display:flex;
  flex-direction:column;
  gap:12px;
}
.link-card:hover{
  transform:translateY(-2px);
  border-color:rgba(0,230,168,.4);
  box-shadow:var(--shadow-card),var(--glow);
}
.link-card .ico{
  width:40px;height:40px;
  border-radius:12px;
  display:flex;
  align-items:center;
  justify-content:center;
  border:1px solid rgba(0,230,168,.28);
  background:rgba(0,230,168,.08);
  color:var(--primary);
}
.link-card h3{
  font-size:18px;
  font-weight:600;
}
.link-card p{
  font-size:14px;
  color:var(--text-2);
  line-height:1.8;
}
.link-card .link-more{margin-top:auto;}

/* ---------- CTA ---------- */
.cta-band{
  position:relative;
  border-radius:var(--r-lg);
  border:1px solid var(--line);
  background:var(--glass-2);
  backdrop-filter:blur(14px);
  -webkit-backdrop-filter:blur(14px);
  padding:44px 40px;
  overflow:hidden;
  display:flex;
  align-items:center;
  justify-content:space-between;
  gap:32px;
  box-shadow:var(--shadow-card);
}
.cta-band::before{
  content:"";
  position:absolute;
  left:50%;
  bottom:-140px;
  width:620px;
  height:260px;
  transform:translateX(-50%);
  background:radial-gradient(closest-side,rgba(0,230,168,.35),transparent 72%);
  pointer-events:none;
}
.cta-band h2{
  font-size:28px;
  font-weight:700;
  line-height:1.35;
  position:relative;
}
.cta-band p{
  color:var(--text-2);
  font-size:15px;
  margin-top:10px;
  max-width:520px;
  position:relative;
}
.cta-actions{
  display:flex;
  align-items:center;
  gap:16px;
  position:relative;
  flex-wrap:wrap;
}

/* ---------- 页脚 ---------- */
.site-footer{
  margin-top:var(--section-y);
  border-top:1px solid var(--line);
  background:var(--bg-2);
  padding:64px 0 0;
}
.footer-grid{
  display:grid;
  grid-template-columns:1.3fr 1fr 1fr 1.2fr;
  gap:32px;
  padding-bottom:40px;
}
.footer-col summary{
  list-style:none;
  cursor:pointer;
  font-size:15px;
  font-weight:600;
  color:var(--text);
  margin-bottom:16px;
  display:flex;
  align-items:center;
  justify-content:space-between;
  gap:12px;
}
.footer-col summary::-webkit-details-marker{display:none;}
.foot-arrow{
  color:var(--primary);
  font-size:16px;
  transition:transform .2s ease;
}
.footer-col details[open] .foot-arrow{transform:rotate(45deg);}
.foot-list{
  display:flex;
  flex-direction:column;
  gap:10px;
  font-size:14px;
  color:var(--text-2);
}
.foot-list a{
  color:var(--text-2);
  transition:color .2s ease,transform .2s ease;
  display:inline-block;
}
.foot-list a:hover{color:var(--primary);transform:translateX(2px);}
.footer-brand .foot-list{gap:14px;}
.footer-brand .brand{margin-bottom:4px;}
.footer-brand p{font-size:14px;color:var(--text-2);line-height:1.85;}
.foot-note{color:var(--text-3)!important;font-size:13px!important;}
.site-footer address{
  font-style:normal;
  font-size:14px;
  color:var(--text-2);
  line-height:1.9;
}
.field-row{
  display:flex;
  gap:10px;
  align-items:center;
}
.field-row input{
  flex:1;
  min-width:0;
  height:38px;
  padding:0 14px;
  border-radius:var(--r-sm);
  border:1px solid var(--line);
  background:rgba(10,17,32,.75);
  color:var(--text);
  transition:border-color .2s ease,box-shadow .2s ease;
}
.field-row input::placeholder{color:var(--text-3);}
.field-row input:focus{
  outline:none;
  border-color:var(--primary);
  box-shadow:var(--glow);
}
.field-row input.is-error{border-color:var(--accent);}
.field-row input.is-ok{border-color:var(--primary);}
.field-msg{
  font-size:13px;
  color:var(--text-3);
  margin-top:10px;
}
.field-msg.is-error{color:var(--accent);}
.field-msg.is-ok{color:var(--primary);}
.footer-bottom{
  border-top:1px solid var(--line);
  padding:20px 0 28px;
  display:flex;
  align-items:center;
  justify-content:space-between;
  gap:16px;
  font-size:13px;
  color:var(--text-3);
  flex-wrap:wrap;
}
.footer-bottom .minor a{
  color:var(--text-3);
  margin-left:16px;
}
.footer-bottom .minor a:hover{color:var(--primary);}

/* ---------- 移动端底部 Tab ---------- */
.tabbar{
  position:fixed;
  left:0;right:0;bottom:0;
  z-index:70;
  display:none;
  height:60px;
  padding-bottom:env(safe-area-inset-bottom);
  background:rgba(10,17,32,.92);
  backdrop-filter:blur(16px);
  -webkit-backdrop-filter:blur(16px);
  border-top:1px solid var(--line);
}
.tabbar .tab{
  flex:1;
  position:relative;
  display:flex;
  flex-direction:column;
  align-items:center;
  justify-content:center;
  gap:2px;
  font-size:10px;
  color:var(--text-3);
  transition:color .2s ease;
}
.tabbar .tab svg{
  width:22px;height:22px;
  stroke:currentColor;
  fill:none;
  stroke-width:1.7;
  stroke-linecap:round;
  stroke-linejoin:round;
}
.tabbar .tab.is-active{color:var(--primary);}
.tabbar .tab.is-active::before{
  content:"";
  position:absolute;
  top:0;left:50%;
  transform:translateX(-50%);
  width:26px;height:2px;
  border-radius:2px;
  background:var(--grad);
  box-shadow:var(--glow);
}

/* ---------- 空态 ---------- */
.empty-state{
  min-height:220px;
  border-radius:var(--r-md);
  border:1px solid var(--line);
  background:var(--glass);
  backdrop-filter:blur(14px);
  -webkit-backdrop-filter:blur(14px);
  display:flex;
  flex-direction:column;
  align-items:center;
  justify-content:center;
  gap:12px;
  text-align:center;
  padding:32px;
}
.empty-state svg{width:38px;height:38px;stroke:var(--text-3);fill:none;stroke-width:1.5;}
.empty-state p{color:var(--text-2);font-size:14px;}

/* ---------- 响应式 ---------- */
@media (max-width:1279px){
  :root{--container:1140px;}
}
@media (max-width:1023px){
  :root{--section-y:72px;}
  .nav-main{
    position:absolute;
    top:100%;left:16px;right:16px;
    flex-direction:column;
    align-items:stretch;
    gap:0;
    padding:12px;
    border-radius:var(--r-md);
    border:1px solid var(--line-2);
    background:rgba(10,17,32,.96);
    backdrop-filter:blur(16px);
    -webkit-backdrop-filter:blur(16px);
    box-shadow:var(--shadow-card);
    display:none;
  }
  .nav-main.is-open{display:flex;}
  .nav-main a{padding:12px 10px;border-radius:10px;}
  .nav-main a::after{display:none;}
  .nav-main a:hover,.nav-main a.is-active{background:rgba(0,230,168,.08);}
  .nav-toggle{display:inline-flex;}
  .nav-cta{display:none;}
  .hero-small h1{font-size:32px;}
  .footer-grid{grid-template-columns:1fr 1fr;}
  .cta-band{flex-direction:column;align-items:flex-start;padding:36px 28px;}
  .posts-grid{grid-template-columns:repeat(4,1fr);}
  .feature-card{grid-column:span 4;}
  .mini-card{grid-column:span 2;}
  .timeline{grid-template-columns:1fr 1fr;}
  .link-cards{grid-template-columns:1fr 1fr;}
}
@media (max-width:767px){
  :root{--section-y:56px;}
  body{font-size:15px;line-height:1.85;}
  .container{padding:0 16px;}
  .nav-wrap{padding:12px 16px;}
  .nav-wrap.is-scrolled{padding:10px 16px;}
  .brand-en{font-size:17px;}
  .section-head{margin-bottom:26px;}
  .section-head h2{font-size:22px;}
  .section-head p{font-size:14px;}
  .hero-small{padding:52px 0 44px;}
  .hero-small h1{font-size:28px;}
  .hero-sub{font-size:15px;}
  .hero-stats{gap:20px;}
  .hero-stats .num{font-size:22px;}
  .posts-grid{grid-template-columns:1fr;gap:20px;}
  .feature-card,.mini-card{grid-column:span 1;}
  .feature-card .card-body,.mini-card .card-body{padding:20px;}
  .timeline{grid-template-columns:1fr;}
  .link-cards{grid-template-columns:1fr;}
  .cta-band h2{font-size:22px;}
  .cta-actions{width:100%;}
  .cta-actions .btn{flex:1;}
  .footer-grid{grid-template-columns:1fr;gap:8px;padding-bottom:24px;}
  .footer-col{padding:10px 0;border-bottom:1px solid var(--line);}
  .footer-col summary{margin-bottom:0;}
  .footer-col details[open] summary{margin-bottom:14px;}
  .field-row{flex-direction:column;align-items:stretch;}
  .field-row .btn{width:100%;}
  .footer-bottom{flex-direction:column;align-items:flex-start;}
  .footer-bottom .minor a{margin-left:0;margin-right:16px;}
  .tabbar{display:flex;}
}
@media (max-width:479px){
  .hero-small h1{font-size:25px;}
  .btn{height:48px;}
  .btn-sm{height:40px;}
  .tabbar .tab{font-size:9px;}
}
@media (prefers-reduced-motion:reduce){
  *{animation-duration:.001ms!important;transition-duration:.001ms!important;}
}