/* roulang page: index */
:root{
  --brand:#0E7C86;
  --brand-dark:#0A5F68;
  --brand-soft:#E7F3F4;
  --accent:#FF6A2B;
  --accent-soft:#FFF0E9;
  --night:#0B1220;
  --night-2:#131C2E;
  --neon:#35E0D0;
  --neon-2:#FF7A45;
  --bg:#F6F8FA;
  --card:#FFFFFF;
  --line:#E3E9EF;
  --text:#16202E;
  --muted:#5B6B7C;
  --r-card:16px;
  --r-btn:10px;
  --r-img:20px;
  --shadow-card:0 1px 2px rgba(11,18,32,.04), 0 8px 24px -12px rgba(11,18,32,.12);
  --shadow-lift:0 16px 40px -16px rgba(11,18,32,.18);
  --ease:180ms ease-out;
}
*,*::before,*::after{box-sizing:border-box;}
html{-webkit-text-size-adjust:100%;scroll-behavior:smooth;}
body{
  margin:0;
  font-family:-apple-system,BlinkMacSystemFont,"PingFang SC","Microsoft YaHei","Noto Sans SC",system-ui,sans-serif;
  font-size:16px;
  line-height:1.75;
  color:var(--text);
  background:var(--bg);
  -webkit-font-smoothing:antialiased;
  padding-bottom:0;
}
img{max-width:100%;display:block;border:0;}
a{color:var(--brand);text-decoration:none;transition:color var(--ease),border-color var(--ease);}
a:hover{color:var(--brand-dark);}
button{font:inherit;color:inherit;border:0;background:none;cursor:pointer;}
ul,ol{margin:0;padding:0;list-style:none;}
h1,h2,h3,h4,p{margin:0;}
:focus-visible{outline:2px solid var(--brand);outline-offset:2px;border-radius:4px;}
.container{width:100%;max-width:1200px;margin:0 auto;padding:0 24px;}
.section{padding:88px 0;scroll-margin-top:88px;}
.section-tight{padding:64px 0;scroll-margin-top:88px;}
.num{font-variant-numeric:tabular-nums;font-feature-settings:"tnum";}

/* 顶部导航 */
.site-header{
  position:sticky;top:0;z-index:60;
  background:rgba(11,18,32,.92);
  backdrop-filter:blur(12px);
  -webkit-backdrop-filter:blur(12px);
  border-bottom:1px solid rgba(53,224,208,.18);
}
.site-header::after{
  content:"";position:absolute;left:0;right:0;bottom:-1px;height:1px;
  background:linear-gradient(90deg,rgba(53,224,208,.85),rgba(255,122,69,.55),rgba(53,224,208,0));
  pointer-events:none;
}
.nav-bar{display:flex;align-items:center;justify-content:space-between;height:64px;gap:24px;}
.brand{display:flex;align-items:center;gap:10px;color:#fff;}
.brand:hover{color:#fff;}
.brand-mark{
  width:38px;height:38px;border-radius:12px;flex:0 0 38px;
  background:linear-gradient(135deg,#0E7C86,#0A5F68);
  border:1px solid rgba(53,224,208,.5);
  display:flex;align-items:center;justify-content:center;
  box-shadow:0 0 18px rgba(53,224,208,.28);
  color:#fff;font-weight:700;font-size:17px;letter-spacing:.5px;
}
.brand-text{display:flex;flex-direction:column;line-height:1.1;}
.brand-name{font-weight:700;font-size:17px;color:#fff;letter-spacing:.5px;}
.brand-sub{font-size:11px;color:rgba(255,255,255,.6);letter-spacing:2px;}
.nav-links{display:flex;align-items:center;gap:6px;}
.nav-links a{
  position:relative;display:inline-flex;align-items:center;height:64px;padding:0 14px;
  font-size:15px;color:rgba(255,255,255,.72);
}
.nav-links a::after{
  content:"";position:absolute;left:14px;right:14px;bottom:16px;height:2px;border-radius:2px;
  background:var(--neon);opacity:0;transform:scaleX(.4);transition:all var(--ease);
}
.nav-links a:hover{color:#fff;}
.nav-links a:hover::after{opacity:.6;transform:scaleX(1);}
.nav-links a.is-active{color:var(--neon);}
.nav-links a.is-active::after{opacity:1;transform:scaleX(1);box-shadow:0 0 12px rgba(53,224,208,.85);}
.nav-cta{
  display:inline-flex;align-items:center;height:40px;padding:0 20px;border-radius:var(--r-btn);
  background:var(--accent);color:#1B1005;font-weight:700;font-size:14px;
  transition:box-shadow var(--ease),transform var(--ease);
}
.nav-cta:hover{color:#1B1005;box-shadow:0 0 18px rgba(255,122,69,.65);transform:translateY(-1px);}
.menu-toggle{
  display:none;width:44px;height:44px;border-radius:10px;border:1px solid rgba(255,255,255,.18);
  color:#fff;align-items:center;justify-content:center;
}
.menu-toggle span{display:block;width:18px;height:2px;background:#fff;border-radius:2px;position:relative;}
.menu-toggle span::before,.menu-toggle span::after{
  content:"";position:absolute;left:0;width:18px;height:2px;background:#fff;border-radius:2px;transition:transform var(--ease);
}
.menu-toggle span::before{top:-6px;}
.menu-toggle span::after{top:6px;}
.mobile-drawer{
  display:none;position:absolute;left:0;right:0;top:100%;
  background:#0B1220;border-bottom:1px solid rgba(53,224,208,.2);
  padding:10px 0 18px;box-shadow:0 24px 40px -20px rgba(0,0,0,.6);
}
.mobile-drawer.is-open{display:block;}
.mobile-drawer a{
  display:block;padding:15px 24px;font-size:17px;color:rgba(255,255,255,.85);
  border-left:4px solid transparent;
}
.mobile-drawer a.is-active{color:var(--neon);border-left-color:var(--neon);background:rgba(53,224,208,.06);}

/* Hero */
.hero{
  position:relative;overflow:hidden;padding:80px 0 88px;scroll-margin-top:88px;
  background:
    radial-gradient(600px 320px at 12% 0%,rgba(14,124,134,.08),transparent 70%),
    radial-gradient(520px 300px at 92% 18%,rgba(255,106,43,.08),transparent 72%),
    linear-gradient(rgba(11,18,32,.035) 1px,transparent 1px) 0 0/44px 44px,
    linear-gradient(90deg,rgba(11,18,32,.035) 1px,transparent 1px) 0 0/44px 44px,
    #F6F8FA;
}
.hero-grid{display:grid;grid-template-columns:repeat(12,1fr);gap:24px;align-items:center;}
.hero-copy{grid-column:span 6;}
.hero-visual{grid-column:span 6;padding-left:24px;}
.eyebrow{
  display:inline-flex;align-items:center;gap:8px;padding:6px 14px;border-radius:999px;
  background:#fff;border:1px solid var(--line);font-size:13px;color:var(--brand-dark);
  box-shadow:0 1px 2px rgba(11,18,32,.04);margin-bottom:22px;
}
.eyebrow i{width:7px;height:7px;border-radius:50%;background:var(--accent);display:inline-block;}
h1{
  font-size:clamp(30px,4.2vw,46px);line-height:1.15;font-weight:700;letter-spacing:-.5px;
  color:var(--text);
}
.hero-sub{margin-top:18px;font-size:17px;line-height:1.75;color:var(--muted);max-width:520px;}
.hero-actions{display:flex;flex-wrap:wrap;gap:14px;margin-top:30px;}
.btn{
  display:inline-flex;align-items:center;justify-content:center;gap:8px;
  height:48px;padding:0 26px;border-radius:var(--r-btn);font-size:15px;font-weight:600;
  transition:all var(--ease);min-height:44px;
}
.btn-primary{background:var(--brand);color:#fff;box-shadow:0 8px 20px -10px rgba(14,124,134,.8);}
.btn-primary:hover{background:var(--brand-dark);color:#fff;transform:translateY(-1px);box-shadow:0 14px 28px -12px rgba(14,124,134,.9);}
.btn-ghost{background:#fff;color:var(--text);border:1px solid var(--line);}
.btn-ghost:hover{border-color:var(--brand);color:var(--brand);transform:translateY(-1px);}
.btn-accent{background:var(--accent);color:#1B1005;}
.btn-accent:hover{color:#1B1005;transform:translateY(-1px);box-shadow:0 14px 30px -14px rgba(255,106,43,.9);}
.btn-block{width:100%;}
.badge-row{display:flex;flex-wrap:wrap;gap:10px;margin-top:28px;}
.badge{
  display:inline-flex;align-items:center;gap:6px;padding:6px 14px;border-radius:999px;
  font-size:13px;color:var(--brand-dark);background:var(--brand-soft);border:1px solid rgba(14,124,134,.28);
}
.hero-media{
  position:relative;border-radius:var(--r-img);overflow:hidden;box-shadow:var(--shadow-card);
  border:1px solid var(--line);background:#E9EEF3;
}
.hero-media img{width:100%;height:400px;object-fit:cover;}
.hero-float{
  position:absolute;right:18px;bottom:18px;background:rgba(255,255,255,.96);
  border:1px solid var(--line);border-radius:14px;padding:14px 18px;
  box-shadow:0 16px 40px -18px rgba(11,18,32,.35);backdrop-filter:blur(6px);
}
.hero-float strong{display:block;font-size:24px;font-weight:700;color:var(--accent);line-height:1.2;}
.hero-float span{font-size:12px;color:var(--muted);letter-spacing:1px;}

/* 区块标题 */
.section-head{max-width:760px;margin-bottom:40px;}
.section-head h2{font-size:clamp(22px,2.6vw,32px);line-height:1.3;font-weight:700;}
.section-head p{margin-top:12px;color:var(--muted);font-size:16px;}
.section-head.row{display:flex;align-items:flex-end;justify-content:space-between;gap:24px;max-width:none;}
.link-more{font-size:14px;font-weight:600;color:var(--brand);border-bottom:1px solid rgba(14,124,134,.4);padding-bottom:2px;white-space:nowrap;}
.link-more:hover{border-color:var(--brand-dark);color:var(--brand-dark);}

/* 卖点 Bento */
.bento{display:grid;grid-template-columns:repeat(12,1fr);gap:24px;}
.bento-main{
  grid-column:span 7;background:var(--card);border:1px solid var(--line);border-radius:var(--r-card);
  padding:32px;box-shadow:var(--shadow-card);transition:all var(--ease);overflow:hidden;
}
.bento-side{grid-column:span 5;display:grid;gap:24px;align-content:start;}
.bento-main:hover,.bento-card:hover{box-shadow:var(--shadow-lift);transform:translateY(-3px);}
.icon-square{
  width:32px;height:32px;border-radius:9px;background:rgba(14,124,134,.1);
  border:1px solid rgba(14,124,134,.35);display:flex;align-items:center;justify-content:center;
  color:var(--brand);font-weight:700;font-size:14px;
}
.bento-main h3,.bento-card h3{margin-top:18px;font-size:19px;font-weight:600;}
.bento-main p,.bento-card p{margin-top:10px;color:var(--muted);font-size:15px;line-height:1.7;}
.bento-card{
  background:var(--card);border:1px solid var(--line);border-radius:var(--r-card);
  padding:26px;box-shadow:var(--shadow-card);transition:all var(--ease);
}
.bento-card.offset{margin-left:26px;}
.bento-figure{margin-top:24px;border-radius:14px;overflow:hidden;border:1px solid var(--line);background:#EDF1F5;}
.bento-figure img{width:100%;height:220px;object-fit:cover;}

/* 流程步骤 */
.steps{position:relative;display:grid;grid-template-columns:repeat(4,1fr);gap:24px;}
.steps::before{
  content:"";position:absolute;left:6%;right:6%;top:18px;height:2px;
  background:linear-gradient(90deg,rgba(14,124,134,.85),rgba(14,124,134,.55),rgba(255,106,43,.9));
  border-radius:2px;z-index:0;
}
.step{position:relative;z-index:1;}
.step-num{
  width:36px;height:36px;border-radius:50%;background:var(--brand);color:#fff;
  display:flex;align-items:center;justify-content:center;font-weight:700;font-size:15px;
  box-shadow:0 0 0 6px #F6F8FA;
}
.step.is-last .step-num{background:var(--accent);color:#1B1005;}
.step h3{margin-top:18px;font-size:17px;font-weight:600;}
.step p{margin-top:8px;font-size:14px;color:var(--muted);line-height:1.7;}
.guide-figure{margin-top:48px;border-radius:var(--r-img);overflow:hidden;border:1px solid var(--line);box-shadow:var(--shadow-card);background:#EDF1F5;}
.guide-figure img{width:100%;height:320px;object-fit:cover;}

/* 深色数据区 */
.proof{
  background:var(--night);position:relative;padding:64px 0;color:#fff;
  border-top:1px solid rgba(53,224,208,.5);
}
.proof::before{
  content:"";position:absolute;left:0;right:0;top:-1px;height:1px;
  background:linear-gradient(90deg,transparent,rgba(53,224,208,.9),rgba(255,122,69,.8),transparent);
}
.proof-grid{display:grid;grid-template-columns:repeat(4,1fr);gap:0;}
.metric{padding:8px 28px;border-left:1px solid rgba(53,224,208,.18);}
.metric:first-child{border-left:0;padding-left:0;}
.metric strong{display:block;font-size:clamp(26px,3vw,38px);font-weight:700;color:var(--neon);line-height:1.1;}
.metric:nth-child(even) strong{color:var(--accent);}
.metric span{display:block;margin-top:10px;font-size:13px;letter-spacing:2px;color:rgba(255,255,255,.62);}

/* 资讯列表 */
.news-layout{display:grid;grid-template-columns:repeat(12,1fr);gap:24px;}
.news-lead{grid-column:span 6;}
.news-list{grid-column:span 6;display:flex;flex-direction:column;}
.news-lead-card{
  display:block;background:var(--card);border:1px solid var(--line);border-radius:var(--r-card);
  overflow:hidden;box-shadow:var(--shadow-card);transition:all var(--ease);height:100%;
}
.news-lead-card:hover{box-shadow:var(--shadow-lift);transform:translateY(-3px);}
.news-thumb{position:relative;background:#E9EEF3;border-bottom:1px solid var(--line);overflow:hidden;}
.news-thumb img{width:100%;height:100%;object-fit:cover;transition:transform 320ms ease-out;}
.news-lead-card:hover .news-thumb img{transform:scale(1.03);}
.news-thumb.lead{aspect-ratio:16/9;}
.news-thumb.small{width:150px;height:90px;flex:0 0 150px;border-radius:10px;border:1px solid var(--line);}
.news-lead-body{padding:24px;}
.tag{
  display:inline-flex;align-items:center;padding:3px 12px;border-radius:999px;
  font-size:12px;color:var(--brand-dark);background:var(--brand-soft);border:1px solid rgba(14,124,134,.3);
}
.news-lead-body h3{margin-top:14px;font-size:20px;font-weight:600;line-height:1.45;color:var(--text);}
.news-lead-body p{margin-top:10px;font-size:14px;color:var(--muted);line-height:1.7;}
.clamp-2{display:-webkit-box;-webkit-line-clamp:2;-webkit-box-orient:vertical;overflow:hidden;}
.meta{display:flex;align-items:center;gap:10px;margin-top:16px;font-size:13px;color:var(--muted);}
.meta .num{letter-spacing:.5px;}
.news-row{
  display:flex;gap:16px;align-items:flex-start;padding:18px 18px;border-radius:14px;
  border:1px solid var(--line);background:var(--card);transition:all var(--ease);
}
.news-row + .news-row{margin-top:14px;}
.news-row:hover{box-shadow:var(--shadow-card);transform:translateY(-2px);border-color:rgba(14,124,134,.35);}
.news-row h3{margin-top:8px;font-size:16px;font-weight:600;line-height:1.5;color:var(--text);}
.news-row p{margin-top:6px;font-size:13px;color:var(--muted);}
.empty-state{
  min-height:240px;display:flex;flex-direction:column;align-items:center;justify-content:center;gap:14px;
  border:1px dashed var(--line);border-radius:var(--r-card);background:var(--card);color:var(--muted);
  text-align:center;padding:32px;
}
.empty-state svg{width:36px;height:36px;color:var(--brand);opacity:.7;}

/* 方案 */
.plans{display:grid;grid-template-columns:repeat(3,1fr);gap:24px;align-items:stretch;}
.plan{
  position:relative;background:var(--card);border:1px solid var(--line);border-radius:var(--r-card);
  padding:32px 28px;box-shadow:var(--shadow-card);display:flex;flex-direction:column;transition:all var(--ease);
}
.plan:hover{box-shadow:var(--shadow-lift);transform:translateY(-3px);}
.plan.featured{border-color:rgba(255,106,43,.4);transform:translateY(-8px);box-shadow:0 24px 50px -22px rgba(11,18,32,.3);}
.plan.featured::before{content:"";position:absolute;left:0;right:0;top:0;height:3px;border-radius:16px 16px 0 0;background:linear-gradient(90deg,var(--neon),var(--accent));}
.plan-tag{
  position:absolute;right:24px;top:-13px;padding:4px 14px;border-radius:999px;
  background:var(--accent);color:#1B1005;font-size:12px;font-weight:700;
}
.plan h3{font-size:19px;font-weight:600;}
.plan .plan-desc{margin-top:8px;font-size:14px;color:var(--muted);}
.plan-price{margin-top:22px;font-size:26px;font-weight:700;color:var(--text);}
.plan-price em{font-style:normal;font-size:14px;font-weight:400;color:var(--muted);}
.plan ul{margin:22px 0 28px;display:grid;gap:12px;}
.plan li{display:flex;gap:10px;align-items:flex-start;font-size:14px;color:var(--muted);}
.plan li i{
  flex:0 0 18px;width:18px;height:18px;border-radius:50%;background:var(--brand-soft);
  color:var(--brand);display:flex;align-items:center;justify-content:center;font-size:11px;font-style:normal;margin-top:3px;
}
.plan .btn{margin-top:auto;}

/* FAQ */
.faq-box{background:var(--card);border:1px solid var(--line);border-radius:var(--r-card);box-shadow:var(--shadow-card);overflow:hidden;}
.faq-item + .faq-item{border-top:1px solid var(--line);}
.faq-q{
  width:100%;display:flex;align-items:center;justify-content:space-between;gap:18px;
  padding:22px 28px;text-align:left;font-size:16px;font-weight:600;color:var(--text);
  position:relative;transition:color var(--ease);
}
.faq-q:hover{color:var(--brand);}
.faq-q::before{
  content:"";position:absolute;left:0;top:18px;bottom:18px;width:3px;border-radius:0 3px 3px 0;
  background:var(--brand);opacity:0;transition:opacity var(--ease);
}
.faq-item.open .faq-q::before{opacity:1;}
.faq-icon{
  flex:0 0 26px;width:26px;height:26px;border-radius:50%;border:1px solid var(--line);
  display:flex;align-items:center;justify-content:center;font-size:15px;color:var(--brand);
  transition:transform 200ms ease-out,background var(--ease),border-color var(--ease);
}
.faq-item.open .faq-icon{transform:rotate(45deg);background:var(--brand-soft);border-color:rgba(14,124,134,.4);}
.faq-a{max-height:0;overflow:hidden;transition:max-height 200ms ease-out;}
.faq-item.open .faq-a{max-height:420px;}
.faq-a p{padding:0 28px 24px 28px;font-size:15px;color:var(--muted);line-height:1.8;}

/* 底部 CTA */
.cta-band{
  background:var(--night-2);border-radius:18px;padding:40px;display:flex;align-items:center;
  justify-content:space-between;gap:28px;position:relative;overflow:hidden;
  box-shadow:0 30px 60px -30px rgba(11,18,32,.6);
}
.cta-band::before{
  content:"";position:absolute;inset:0;
  background:radial-gradient(420px 200px at 88% 0%,rgba(53,224,208,.16),transparent 70%),
             radial-gradient(320px 180px at 4% 100%,rgba(255,122,69,.14),transparent 72%);
}
.cta-band > *{position:relative;z-index:1;}
.cta-band h2{color:#fff;font-size:clamp(20px,2.2vw,26px);font-weight:700;}
.cta-band p{margin-top:8px;color:rgba(255,255,255,.66);font-size:14px;}

/* 页脚 */
.site-footer{background:var(--night);color:#fff;position:relative;margin-top:88px;}
.site-footer::before{
  content:"";position:absolute;left:0;right:0;top:0;height:1px;
  background:linear-gradient(90deg,transparent,rgba(53,224,208,.9),rgba(255,122,69,.75),transparent);
}
.footer-grid{display:grid;grid-template-columns:1.4fr 1fr 1fr 1fr;gap:32px;padding:56px 0;}
.footer-brand{display:flex;align-items:center;gap:10px;margin-bottom:16px;}
.footer-col h4{font-size:14px;font-weight:700;color:#fff;margin-bottom:16px;letter-spacing:.5px;}
.footer-col p{font-size:14px;line-height:1.8;color:rgba(255,255,255,.6);}
.footer-col li + li{margin-top:10px;}
.footer-col a{font-size:14px;color:rgba(255,255,255,.7);border-bottom:1px solid transparent;}
.footer-col a:hover{color:var(--neon);border-bottom-color:var(--neon);}
.footer-bottom{
  border-top:1px solid rgba(255,255,255,.08);padding:20px 0 28px;
  font-size:13px;color:rgba(255,255,255,.45);display:flex;justify-content:space-between;gap:16px;flex-wrap:wrap;
}
.footer-bottom a{color:rgba(255,255,255,.55);}
.footer-bottom a:hover{color:var(--neon);}

/* 浮动 CTA */
.float-cta{
  position:fixed;right:28px;bottom:28px;z-index:50;
  display:inline-flex;align-items:center;gap:8px;height:50px;padding:0 24px;border-radius:999px;
  background:var(--brand);color:#fff;font-weight:600;font-size:15px;
  box-shadow:0 0 0 1px rgba(255,106,43,.5),0 12px 30px -10px rgba(255,106,43,.75);
  transition:all var(--ease);
}
.float-cta:hover{background:var(--brand-dark);color:#fff;transform:translateY(-2px);box-shadow:0 0 0 1px rgba(255,106,43,.75),0 18px 36px -12px rgba(255,106,43,.85);}

/* 响应式 */
@media (max-width:1024px){
  .hero-copy,.hero-visual{grid-column:span 12;}
  .hero-visual{padding-left:0;}
  .hero-media img{height:320px;}
  .bento-main,.bento-side{grid-column:span 12;}
  .bento-card.offset{margin-left:0;}
  .news-lead,.news-list{grid-column:span 12;}
  .plans{grid-template-columns:repeat(2,1fr);}
  .plan.featured{transform:none;}
  .footer-grid{grid-template-columns:repeat(2,1fr);}
}
@media (max-width:768px){
  .nav-links,.nav-cta{display:none;}
  .menu-toggle{display:flex;}
  .nav-bar{height:56px;}
  .section{padding:56px 0;}
  .hero{padding:52px 0 56px;}
  .container{padding:0 18px;}
  .steps{grid-template-columns:repeat(2,1fr);gap:32px 24px;}
  .steps::before{display:none;}
  .step{border-left:2px solid rgba(14,124,134,.35);padding-left:18px;}
  .step-num{width:32px;height:32px;box-shadow:none;}
  .proof-grid{grid-template-columns:repeat(2,1fr);gap:28px 0;}
  .metric{padding:0 20px;}
  .metric:nth-child(3){border-left:0;padding-left:0;}
  .metric:nth-child(odd){border-left:0;padding-left:0;}
  .news-thumb.small{width:110px;height:72px;flex:0 0 110px;}
  .plans{grid-template-columns:1fr;}
  .cta-band{flex-direction:column;align-items:flex-start;padding:32px;}
  .faq-q{padding:18px 20px;}
  .faq-a p{padding:0 20px 20px 20px;}
  .hero-float{position:static;margin-top:0;border-radius:0;border:0;border-top:1px solid var(--line);box-shadow:none;display:flex;align-items:center;gap:12px;}
  .hero-float strong{font-size:20px;margin:0;}
  .float-cta{
    right:0;left:0;bottom:0;border-radius:0;height:auto;padding:16px 18px;
    justify-content:center;padding-bottom:calc(16px + env(safe-area-inset-bottom));
  }
  body{padding-bottom:62px;}
  .site-footer{margin-top:56px;}
}
@media (max-width:520px){
  .brand-sub{display:none;}
  .steps{grid-template-columns:1fr;}
  .proof-grid{grid-template-columns:1fr;}
  .metric,.metric:nth-child(odd),.metric:nth-child(even){border-left:0;padding:0 0 22px 0;border-bottom:1px solid rgba(53,224,208,.18);}
  .metric{border-bottom:1px solid rgba(53,224,208,.18);}
  .metric:last-child{border-bottom:0;padding-bottom:0;}
  .news-row{flex-direction:column;}
  .news-thumb.small{width:100%;height:160px;flex:none;}
  .footer-grid{grid-template-columns:1fr;gap:28px;padding:44px 0;}
  .hero-media img{height:240px;}
}
@media (prefers-reduced-motion:reduce){
  *{animation:none !important;transition:none !important;}
  html{scroll-behavior:auto;}
}

/* roulang page: article */
:root{
  --brand:#0E7C86;
  --brand-deep:#0A5F68;
  --brand-soft:#E6F3F4;
  --accent:#FF6A2B;
  --accent-soft:#FFF1E9;
  --night:#0B1220;
  --night-2:#131C2E;
  --bg:#F6F8FA;
  --card:#FFFFFF;
  --line:#E3E9EF;
  --text:#16202E;
  --muted:#5B6B7C;
  --neon:#35E0D0;
  --neon-2:#FF7A45;
  --r-card:16px;
  --r-btn:10px;
  --shadow-card:0 1px 2px rgba(11,18,32,.04), 0 8px 24px -12px rgba(11,18,32,.12);
  --shadow-lift:0 16px 40px -16px rgba(11,18,32,.18);
  --header-h:64px;
}
*,*::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,"PingFang SC","Microsoft YaHei","Noto Sans SC",system-ui,sans-serif;
  font-size:16px;
  line-height:1.75;
  -webkit-font-smoothing:antialiased;
  -moz-osx-font-smoothing:grayscale;
}
img{max-width:100%;display:block;height:auto}
a{color:inherit;text-decoration:none}
button{font:inherit;color:inherit;background:none;border:none;cursor:pointer}
ul,ol{margin:0}
h1,h2,h3,h4,p{margin:0}
:focus-visible{outline:2px solid var(--brand);outline-offset:2px;border-radius:4px}
.site-header :focus-visible,.site-footer :focus-visible{outline-color:var(--neon)}

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

/* ============ 顶部导航 ============ */
.site-header{
  position:sticky;top:0;z-index:60;
  background:rgba(11,18,32,.94);
  -webkit-backdrop-filter:blur(12px);
  backdrop-filter:blur(12px);
  border-bottom:1px solid rgba(53,224,208,.16);
}
.site-header::after{
  content:"";position:absolute;left:0;right:0;bottom:-1px;height:1px;
  background:linear-gradient(90deg,var(--neon),rgba(255,122,69,.5),rgba(53,224,208,0));
}
.header-inner{display:flex;align-items:center;gap:24px;height:var(--header-h)}
.brand{display:inline-flex;align-items:center;gap:11px;flex-shrink:0}
.brand-mark{
  width:36px;height:36px;border-radius:11px;display:grid;place-items:center;
  background:linear-gradient(135deg,#12A0AC,var(--brand-deep));
  color:#fff;font-weight:700;font-size:17px;line-height:1;
  box-shadow:0 0 18px rgba(53,224,208,.28);
}
.brand-text{display:flex;flex-direction:column;line-height:1.12}
.brand-name{color:#fff;font-size:17px;font-weight:700;letter-spacing:.02em}
.brand-sub{color:var(--neon);font-size:11px;letter-spacing:.2em;margin-top:2px}
.nav-links{display:flex;align-items:center;gap:28px;margin-left:auto}
.nav-links a{
  position:relative;padding:21px 0;font-size:15px;color:rgba(255,255,255,.72);
  transition:color .18s ease-out;white-space:nowrap;
}
.nav-links a::after{
  content:"";position:absolute;left:0;right:0;bottom:14px;height:2px;border-radius:2px;
  background:var(--neon);opacity:0;transform:scaleX(.4);
  transition:opacity .18s ease-out,transform .18s ease-out;
  box-shadow:0 0 12px rgba(53,224,208,.85);
}
.nav-links a:hover{color:#fff}
.nav-links a:hover::after{opacity:.65;transform:scaleX(1)}
.nav-links a.is-active{color:var(--neon)}
.nav-links a.is-active::after{opacity:1;transform:scaleX(1)}
.header-actions{display:flex;align-items:center;gap:12px;flex-shrink:0}
.btn-neon{
  display:inline-flex;align-items:center;justify-content:center;height:40px;padding:0 18px;
  border-radius:var(--r-btn);background:var(--accent);color:#20100A;font-size:14px;font-weight:700;
  letter-spacing:.02em;box-shadow:0 0 18px rgba(255,122,69,.32);
  transition:transform .18s ease-out,box-shadow .18s ease-out,background .18s ease-out;
}
.btn-neon:hover{transform:translateY(-1px);background:#FF7F45;box-shadow:0 0 26px rgba(255,122,69,.55)}
.btn-neon:active{transform:translateY(0)}
.nav-toggle{
  display:none;width:44px;height:44px;border-radius:10px;flex-direction:column;
  align-items:center;justify-content:center;gap:5px;border:1px solid rgba(255,255,255,.16);
}
.nav-toggle span{display:block;width:18px;height:2px;border-radius:2px;background:rgba(255,255,255,.85);transition:.18s ease-out}
.nav-toggle[aria-expanded="true"] span:nth-child(1){transform:translateY(7px) rotate(45deg)}
.nav-toggle[aria-expanded="true"] span:nth-child(2){opacity:0}
.nav-toggle[aria-expanded="true"] span:nth-child(3){transform:translateY(-7px) rotate(-45deg)}
.mobile-drawer{
  display:none;flex-direction:column;gap:4px;
  position:fixed;left:0;right:0;top:var(--header-h);z-index:55;
  padding:12px 18px 24px;
  background:rgba(11,18,32,.98);
  border-bottom:1px solid rgba(53,224,208,.2);
  box-shadow:0 20px 40px -20px rgba(0,0,0,.6);
}
.mobile-drawer.is-open{display:flex}
.mobile-drawer a{
  padding:14px 12px;font-size:17px;color:rgba(255,255,255,.78);
  border-left:4px solid transparent;border-radius:8px;transition:.18s ease-out;
}
.mobile-drawer a:hover{color:#fff;background:rgba(255,255,255,.05)}
.mobile-drawer a.is-active{color:var(--neon);border-left-color:var(--neon);background:rgba(53,224,208,.07)}
.mobile-drawer .drawer-cta{
  margin-top:10px;text-align:center;font-weight:700;color:#fff;background:var(--brand);
  border-left-color:transparent;
}

/* ============ 面包屑 ============ */
.crumb-wrap{padding:26px 0 0}
.breadcrumb{display:flex;flex-wrap:wrap;align-items:center;gap:8px;font-size:13px;color:var(--muted)}
.breadcrumb a{color:var(--muted);transition:color .18s ease-out}
.breadcrumb a:hover{color:var(--brand)}
.breadcrumb .sep{color:#C3CDD8}
.breadcrumb .current{
  color:var(--text);max-width:46ch;overflow:hidden;text-overflow:ellipsis;white-space:nowrap;
}

/* ============ 文章头部 ============ */
.article-head{padding:22px 0 0}
.badge-cat{
  display:inline-flex;align-items:center;height:28px;padding:0 13px;border-radius:999px;
  border:1px solid rgba(14,124,134,.35);background:var(--brand-soft);color:var(--brand-deep);
  font-size:12.5px;font-weight:600;letter-spacing:.04em;
}
.article-title{
  font-size:clamp(27px,3.6vw,42px);line-height:1.22;font-weight:700;letter-spacing:-.01em;
  margin:18px 0 16px;max-width:900px;
}
.article-meta{
  display:flex;flex-wrap:wrap;align-items:center;gap:10px;
  font-size:13.5px;color:var(--muted);font-variant-numeric:tabular-nums;
}
.article-meta .dot{width:4px;height:4px;border-radius:50%;background:#C6D0DA}
.article-hero{
  position:relative;height:260px;margin-top:28px;border-radius:var(--r-card);overflow:hidden;
  border:1px solid var(--line);background:#E9EEF3;
}
.article-hero img{width:100%;height:100%;object-fit:cover}
.article-hero::after{
  content:"";position:absolute;inset:0;
  background:linear-gradient(180deg,rgba(11,18,32,.05),rgba(11,18,32,.42));
}
.article-hero .hero-cap{
  position:absolute;left:24px;bottom:20px;z-index:2;color:#fff;font-size:14px;
  letter-spacing:.04em;text-shadow:0 1px 8px rgba(0,0,0,.4);
}

/* ============ 正文布局 ============ */
.article-layout{
  display:grid;grid-template-columns:minmax(0,760px) 316px;
  gap:48px;justify-content:center;align-items:start;padding:56px 0 0;
}
.article-main{min-width:0}
.article-side{position:sticky;top:88px;display:flex;flex-direction:column;gap:20px}
.side-card{
  background:var(--card);border:1px solid var(--line);border-radius:var(--r-card);
  box-shadow:var(--shadow-card);padding:22px;
}
.side-card h3{
  font-size:14.5px;font-weight:700;letter-spacing:.04em;margin-bottom:14px;
  display:flex;align-items:center;gap:8px;color:var(--text);
}
.side-card h3::before{
  content:"";width:4px;height:14px;border-radius:2px;background:var(--brand);
}
.toc-list{display:flex;flex-direction:column}
.toc-list a{
  display:block;font-size:14px;line-height:1.55;color:var(--muted);padding:8px 0 8px 12px;
  border-left:2px solid var(--line);overflow:hidden;text-overflow:ellipsis;
  transition:color .18s ease-out,border-color .18s ease-out;
}
.toc-list a:hover{color:var(--brand);border-left-color:var(--brand)}
.toc-list a.is-current{color:var(--brand);border-left-color:var(--brand);font-weight:600}
.side-link{
  display:flex;gap:12px;align-items:center;padding:12px;border-radius:12px;
  transition:background .18s ease-out,transform .18s ease-out;
}
.side-link + .side-link{margin-top:6px}
.side-link:hover{background:#F2F6F8;transform:translateX(2px)}
.side-link .thumb{
  width:64px;height:48px;border-radius:10px;overflow:hidden;flex-shrink:0;background:#E9EEF3;
  border:1px solid var(--line);
}
.side-link .thumb img{width:100%;height:100%;object-fit:cover}
.side-link .txt{min-width:0}
.side-link .txt b{display:block;font-size:14px;font-weight:600;line-height:1.45;color:var(--text)}
.side-link .txt span{display:block;font-size:12.5px;color:var(--muted);margin-top:4px}
.side-note{
  font-size:13.5px;line-height:1.8;color:var(--muted);
}
.side-btn{
  display:inline-flex;align-items:center;justify-content:center;width:100%;height:44px;
  margin-top:14px;border-radius:var(--r-btn);border:1px solid rgba(14,124,134,.4);
  color:var(--brand);font-size:14px;font-weight:600;background:#fff;
  transition:.18s ease-out;
}
.side-btn:hover{background:var(--brand);color:#fff;border-color:var(--brand)}

/* ============ 正文排版 ============ */
.prose-cms{font-size:17px;line-height:1.85;color:var(--text);max-width:760px}
.prose-cms > *:first-child{margin-top:0}
.prose-cms p{margin:0 0 1.15em}
.prose-cms h2{
  position:relative;font-size:22px;line-height:1.45;font-weight:700;
  margin:2.1em 0 .8em;padding-left:14px;scroll-margin-top:90px;
}
.prose-cms h2::before{
  content:"";position:absolute;left:0;top:.28em;bottom:.28em;width:4px;border-radius:2px;
  background:var(--brand);
}
.prose-cms h3{font-size:18.5px;line-height:1.55;font-weight:600;margin:1.7em 0 .6em;scroll-margin-top:90px}
.prose-cms h4{font-size:17px;font-weight:600;margin:1.4em 0 .5em}
.prose-cms ul{list-style:none;padding-left:0;margin:0 0 1.2em}
.prose-cms ul li{position:relative;padding-left:20px;margin:.5em 0}
.prose-cms ul li::before{
  content:"";position:absolute;left:4px;top:.72em;width:6px;height:6px;border-radius:2px;
  background:var(--brand);
}
.prose-cms ol{padding-left:22px;margin:0 0 1.2em}
.prose-cms ol li{margin:.5em 0;padding-left:4px}
.prose-cms ol li::marker{color:var(--brand);font-weight:700}
.prose-cms blockquote{
  margin:1.6em 0;padding:18px 22px;border-radius:12px;
  background:var(--brand-soft);border-left:4px solid var(--accent);
  color:#243444;font-size:16.5px;
}
.prose-cms blockquote p:last-child{margin-bottom:0}
.prose-cms a{color:var(--brand);border-bottom:1px solid rgba(14,124,134,.4);transition:.18s ease-out}
.prose-cms a:hover{color:var(--brand-deep);border-bottom-color:var(--brand-deep)}
.prose-cms img{border-radius:12px;margin:1.6em auto}
.prose-cms figure{margin:1.6em 0}
.prose-cms figcaption{font-size:13px;color:var(--muted);text-align:center;margin-top:10px}
.prose-cms table{
  width:100%;border-collapse:collapse;margin:1.6em 0;font-size:15px;
  border:1px solid var(--line);border-radius:10px;overflow:hidden;
}
.prose-cms th,.prose-cms td{padding:11px 14px;border-bottom:1px solid var(--line);text-align:left}
.prose-cms th{background:#F1F5F8;font-weight:600;color:#243444}
.prose-cms tr:last-child td{border-bottom:none}
.prose-cms hr{border:none;height:1px;background:var(--line);margin:2.4em 0}
.prose-cms code{
  background:#EEF3F6;border-radius:6px;padding:2px 6px;font-size:15px;color:#0C5B63;
}

.empty-state{
  background:var(--card);border:1px solid var(--line);border-radius:var(--r-card);
  box-shadow:var(--shadow-card);padding:56px 32px;text-align:center;
}
.empty-state h2{font-size:22px;font-weight:700;margin-bottom:12px}
.empty-state p{color:var(--muted);font-size:15px;margin-bottom:24px}
.btn-primary{
  display:inline-flex;align-items:center;justify-content:center;height:46px;padding:0 24px;
  border-radius:var(--r-btn);background:var(--brand);color:#fff;font-size:15px;font-weight:600;
  box-shadow:0 10px 24px -12px rgba(14,124,134,.8);
  transition:background .18s ease-out,transform .18s ease-out,box-shadow .18s ease-out;
}
.btn-primary:hover{background:var(--brand-deep);transform:translateY(-1px);box-shadow:0 14px 28px -12px rgba(14,124,134,.9)}
.btn-ghost{
  display:inline-flex;align-items:center;justify-content:center;height:46px;padding:0 24px;
  border-radius:var(--r-btn);background:#fff;border:1px solid var(--line);color:var(--text);
  font-size:15px;font-weight:600;transition:.18s ease-out;
}
.btn-ghost:hover{border-color:var(--brand);color:var(--brand)}

/* ============ 文章尾部 ============ */
.article-foot{
  max-width:760px;margin-top:56px;padding-top:36px;border-top:1px solid var(--line);
}
.foot-label{font-size:13px;letter-spacing:.12em;color:var(--muted);margin-bottom:14px}
.tag-row{display:flex;flex-wrap:wrap;gap:10px}
.tag{
  display:inline-flex;align-items:center;height:32px;padding:0 15px;border-radius:999px;
  border:1px solid var(--line);background:#fff;font-size:13px;color:var(--muted);
  transition:.18s ease-out;
}
.tag:hover{border-color:var(--brand);color:var(--brand);transform:translateY(-1px)}
.nav-cards{display:grid;grid-template-columns:1fr 1fr;gap:20px;margin-top:36px}
.nav-card{
  display:block;background:#fff;border:1px solid var(--line);border-radius:14px;
  padding:20px 22px;box-shadow:var(--shadow-card);
  transition:transform .18s ease-out,box-shadow .18s ease-out,border-color .18s ease-out;
}
.nav-card:hover{transform:translateY(-3px);box-shadow:var(--shadow-lift);border-color:rgba(14,124,134,.42)}
.nav-card .label{font-size:12px;letter-spacing:.14em;color:var(--muted);margin-bottom:9px}
.nav-card .title{font-size:16px;font-weight:600;line-height:1.5;color:var(--text)}
.nav-card .hint{font-size:13px;color:var(--muted);margin-top:8px}
.related-block{margin-top:48px}
.related-block h2{font-size:20px;font-weight:700;margin-bottom:20px}
.related-grid{display:grid;grid-template-columns:repeat(3,minmax(0,1fr));gap:20px}
.related-card{
  display:block;background:#fff;border:1px solid var(--line);border-radius:14px;overflow:hidden;
  box-shadow:var(--shadow-card);transition:transform .18s ease-out,box-shadow .18s ease-out;
}
.related-card:hover{transform:translateY(-3px);box-shadow:var(--shadow-lift)}
.related-card .pic{aspect-ratio:16/9;background:#E9EEF3;border-bottom:1px solid var(--line)}
.related-card .pic img{width:100%;height:100%;object-fit:cover}
.related-card .body{padding:16px 18px 18px}
.related-card .body b{display:block;font-size:15px;font-weight:600;line-height:1.5;color:var(--text)}
.related-card .body span{display:block;font-size:12.5px;color:var(--muted);margin-top:8px;font-variant-numeric:tabular-nums}
.back-wrap{text-align:center;margin-top:44px}

/* ============ 底部 CTA ============ */
.cta-band{
  position:relative;overflow:hidden;margin:80px 0 0;padding:40px;border-radius:18px;
  background:linear-gradient(135deg,var(--night),var(--night-2));
  display:flex;align-items:center;justify-content:space-between;gap:28px;
  border:1px solid rgba(53,224,208,.16);
}
.cta-band::before{
  content:"";position:absolute;top:0;left:0;right:0;height:1px;
  background:linear-gradient(90deg,var(--neon),rgba(255,122,69,.6),rgba(53,224,208,0));
}
.cta-band h2{color:#fff;font-size:clamp(19px,2.2vw,24px);font-weight:700;line-height:1.4}
.cta-band p{color:rgba(255,255,255,.68);font-size:14.5px;margin-top:10px;max-width:52ch}
.btn-accent{
  display:inline-flex;align-items:center;justify-content:center;height:48px;padding:0 26px;
  border-radius:var(--r-btn);background:var(--accent);color:#20100A;font-size:15px;font-weight:700;
  white-space:nowrap;box-shadow:0 0 22px rgba(255,122,69,.4);
  transition:transform .18s ease-out,box-shadow .18s ease-out;
}
.btn-accent:hover{transform:translateY(-1px);box-shadow:0 0 30px rgba(255,122,69,.62)}

/* ============ 页脚 ============ */
.site-footer{position:relative;margin-top:88px;background:var(--night)}
.site-footer::before{
  content:"";position:absolute;top:0;left:0;right:0;height:1px;
  background:linear-gradient(90deg,rgba(53,224,208,.9),rgba(255,122,69,.5),rgba(53,224,208,0));
}
.footer-grid{
  display:grid;grid-template-columns:1.6fr 1fr 1fr 1fr;gap:32px;padding:56px 0 40px;
}
.footer-col h4{color:#fff;font-size:14px;font-weight:600;letter-spacing:.05em;margin-bottom:16px}
.footer-col ul{list-style:none;padding:0;display:flex;flex-direction:column;gap:10px}
.footer-col a{color:rgba(255,255,255,.7);font-size:14px;transition:color .18s ease-out}
.footer-col a:hover{color:var(--neon);text-decoration:underline;text-underline-offset:3px}
.footer-col p{color:rgba(255,255,255,.62);font-size:14px;line-height:1.85}
.footer-brand{display:flex;align-items:center;gap:12px;margin-bottom:16px}
.footer-bottom{
  display:flex;flex-wrap:wrap;gap:12px;justify-content:space-between;align-items:center;
  padding:18px 0 30px;border-top:1px solid rgba(255,255,255,.08);
  color:rgba(255,255,255,.5);font-size:13px;
}
.footer-bottom a{color:rgba(255,255,255,.72);transition:color .18s ease-out}
.footer-bottom a:hover{color:var(--neon)}

/* ============ 浮动 CTA ============ */
.float-cta{
  position:fixed;right:24px;bottom:24px;z-index:45;
  display:inline-flex;align-items:center;gap:8px;height:52px;padding:0 22px;border-radius:999px;
  background:var(--brand);color:#fff;font-size:15px;font-weight:700;letter-spacing:.02em;
  box-shadow:0 0 0 1px rgba(255,122,69,.4),0 12px 28px -10px rgba(255,106,43,.75),0 0 22px rgba(53,224,208,.22);
  transition:background .18s ease-out,transform .18s ease-out,box-shadow .18s ease-out;
}
.float-cta:hover{background:var(--brand-deep);transform:translateY(-2px);box-shadow:0 0 0 1px rgba(255,122,69,.5),0 18px 34px -12px rgba(255,106,43,.85),0 0 26px rgba(53,224,208,.3)}

/* ============ 响应式 ============ */
@media (max-width:1024px){
  .article-layout{grid-template-columns:minmax(0,1fr);gap:44px}
  .article-side{position:static}
  .related-grid{grid-template-columns:repeat(2,minmax(0,1fr))}
  .footer-grid{grid-template-columns:1fr 1fr}
}
@media (max-width:900px){
  .nav-links{display:none}
  .nav-toggle{display:inline-flex}
}
@media (max-width:768px){
  :root{--header-h:56px}
  .header-inner{gap:16px}
  .article-hero{height:180px}
  .article-layout{padding-top:40px}
  .nav-cards{grid-template-columns:1fr}
  .related-grid{grid-template-columns:1fr}
  .cta-band{flex-direction:column;align-items:flex-start;padding:32px 26px}
  .footer-grid{grid-template-columns:1fr;gap:28px;padding:44px 0 32px}
  .article-title{margin:14px 0 12px}
}
@media (max-width:640px){
  .container{padding:0 18px}
  .header-actions .btn-neon{display:none}
  .article-meta{font-size:13px}
  .prose-cms{font-size:16.5px;line-height:1.8}
  .prose-cms h2{font-size:20px}
  .float-cta{
    left:0;right:0;bottom:0;height:auto;border-radius:0;justify-content:center;
    padding:15px 18px calc(15px + env(safe-area-inset-bottom));
    font-size:15px;
  }
  .site-footer{padding-bottom:64px}
}
@media (prefers-reduced-motion:reduce){
  *{animation-duration:.001ms !important;transition-duration:.001ms !important;scroll-behavior:auto !important}
}

/* roulang page: category1 */
:root{
    --brand:#0E7C86;
    --brand-dark:#0A5F68;
    --brand-soft:rgba(14,124,134,.08);
    --brand-line:rgba(14,124,134,.28);
    --orange:#FF6A2B;
    --ink:#16202E;
    --muted:#5B6B7C;
    --line:#E3E9EF;
    --bg:#F6F8FA;
    --card:#FFFFFF;
    --dark:#0B1220;
    --dark-2:#131C2E;
    --neon:#35E0D0;
    --neon-2:#FF7A45;
    --r-card:16px;
    --r-btn:10px;
    --r-pill:999px;
    --shadow-card:0 1px 2px rgba(11,18,32,.04),0 8px 24px -12px rgba(11,18,32,.12);
    --shadow-hover:0 16px 40px -16px rgba(11,18,32,.18);
    --container:1200px;
  }

  *,*::before,*::after{box-sizing:border-box;}
  html{-webkit-text-size-adjust:100%;scroll-behavior:smooth;}
  body{
    margin:0;
    background:var(--bg);
    color:var(--ink);
    font-family:-apple-system,"PingFang SC","Microsoft YaHei","Noto Sans SC",system-ui,sans-serif;
    font-size:16px;
    line-height:1.75;
    -webkit-font-smoothing:antialiased;
  }
  img{max-width:100%;display:block;border:0;}
  a{color:inherit;text-decoration:none;transition:color .18s ease,border-color .18s ease;}
  button{font:inherit;color:inherit;border:0;background:none;cursor:pointer;}
  ul,ol{margin:0;padding:0;list-style:none;}
  h1,h2,h3,h4,p{margin:0;}
  ::selection{background:rgba(14,124,134,.16);}

  :focus-visible{outline:2px solid var(--brand);outline-offset:2px;}
  .site-header :focus-visible,.dark-band :focus-visible,.site-footer :focus-visible{outline:2px solid var(--neon);outline-offset:2px;}

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

  /* ---------------- 顶栏 ---------------- */
  .site-header{
    position:sticky;
    top:0;
    z-index:60;
    background:rgba(11,18,32,.92);
    -webkit-backdrop-filter:blur(12px);
    backdrop-filter:blur(12px);
  }
  .site-header::after{
    content:"";
    position:absolute;
    left:0;right:0;bottom:0;
    height:1px;
    background:linear-gradient(90deg,rgba(53,224,208,.75),rgba(53,224,208,.06) 55%,rgba(255,122,69,.35));
  }
  .header-inner{
    display:flex;
    align-items:center;
    gap:24px;
    min-height:64px;
  }
  .brand{
    display:inline-flex;
    align-items:center;
    gap:11px;
    flex:0 0 auto;
  }
  .brand-mark{
    width:38px;height:38px;
    border-radius:12px;
    display:grid;place-items:center;
    background:linear-gradient(150deg,#0E7C86,#0A5F68);
    color:#fff;
    font-weight:700;
    font-size:18px;
    box-shadow:0 0 0 1px rgba(53,224,208,.35),0 6px 18px -8px rgba(53,224,208,.6);
  }
  .brand-text{display:flex;flex-direction:column;line-height:1.15;}
  .brand-name{color:#fff;font-weight:700;font-size:16px;letter-spacing:.02em;}
  .brand-sub{color:rgba(53,224,208,.9);font-size:11px;letter-spacing:.22em;}

  .nav-links{
    display:flex;
    align-items:center;
    gap:30px;
    margin-left:18px;
    flex:1 1 auto;
  }
  .nav-links a{
    position:relative;
    display:inline-block;
    padding:8px 2px;
    font-size:15px;
    color:rgba(255,255,255,.72);
  }
  .nav-links a::after{
    content:"";
    position:absolute;
    left:0;right:0;bottom:0;
    height:2px;
    border-radius:2px;
    background:linear-gradient(90deg,var(--neon),rgba(53,224,208,0));
    transform:scaleX(0);
    transform-origin:left center;
    transition:transform .22s ease;
  }
  .nav-links a:hover{color:#fff;}
  .nav-links a:hover::after{transform:scaleX(1);}
  .nav-links a.is-active{
    color:var(--neon);
    text-shadow:0 0 12px rgba(53,224,208,.55);
  }
  .nav-links a.is-active::after{
    transform:scaleX(1);
    background:var(--neon);
    box-shadow:0 0 12px rgba(53,224,208,.85);
  }

  .nav-cta{
    flex:0 0 auto;
    display:inline-flex;
    align-items:center;
    gap:8px;
    height:40px;
    padding:0 20px;
    border-radius:var(--r-pill);
    background:var(--orange);
    color:#141A22;
    font-weight:700;
    font-size:14px;
    transition:transform .18s ease,box-shadow .18s ease,background .18s ease;
  }
  .nav-cta:hover{
    background:#FF8248;
    transform:translateY(-1px);
    box-shadow:0 0 20px rgba(255,122,69,.55);
  }
  .nav-toggle{
    display:none;
    width:44px;height:44px;
    border-radius:10px;
    align-items:center;
    justify-content:center;
    flex-direction:column;
    gap:5px;
    margin-left:auto;
  }
  .nav-toggle span{
    display:block;
    width:20px;height:2px;border-radius:2px;
    background:rgba(255,255,255,.82);
    transition:transform .2s ease,opacity .2s ease;
  }
  .nav-toggle.is-open span:nth-child(1){transform:translateY(7px) rotate(45deg);}
  .nav-toggle.is-open span:nth-child(2){opacity:0;}
  .nav-toggle.is-open span:nth-child(3){transform:translateY(-7px) rotate(-45deg);}

  .mobile-drawer{
    display:none;
    background:rgba(11,18,32,.98);
    border-top:1px solid rgba(53,224,208,.16);
    padding:10px 24px 22px;
  }
  .mobile-drawer.is-open{display:block;}
  .mobile-drawer a{
    display:block;
    padding:14px 0;
    font-size:17px;
    color:rgba(255,255,255,.8);
    border-bottom:1px solid rgba(255,255,255,.07);
  }
  .mobile-drawer a.is-active{
    color:var(--neon);
    border-left:4px solid var(--neon);
    padding-left:12px;
  }
  .mobile-drawer .drawer-cta{
    margin-top:16px;
    text-align:center;
    border:0;
    border-radius:var(--r-pill);
    background:var(--orange);
    color:#141A22;
    font-weight:700;
    padding:12px 0;
  }

  /* ---------------- 页头 band ---------------- */
  .page-band{
    position:relative;
    background-color:#EDF4F5;
    background-image:url('/assets/images/backpic/back-1.webp');
    background-size:cover;
    background-position:center;
    padding:60px 0 56px;
    overflow:hidden;
    scroll-margin-top:90px;
  }
  .page-band::before{
    content:"";
    position:absolute;inset:0;
    background:linear-gradient(112deg,rgba(246,248,250,.97) 0%,rgba(246,248,250,.9) 52%,rgba(246,248,250,.7) 100%);
  }
  .page-band .container{position:relative;z-index:1;}
  .band-grid{
    display:grid;
    grid-template-columns:minmax(0,1.55fr) minmax(0,.85fr);
    gap:40px;
    align-items:center;
  }
  .breadcrumb{
    display:flex;
    align-items:center;
    gap:8px;
    font-size:13px;
    color:var(--muted);
    margin-bottom:20px;
  }
  .breadcrumb a:hover{color:var(--brand);}
  .breadcrumb .sep{color:#B9C5D1;}
  .page-band h1{
    font-size:clamp(28px,3.9vw,42px);
    line-height:1.2;
    font-weight:700;
    letter-spacing:-.01em;
    max-width:760px;
  }
  .band-lead{
    margin-top:16px;
    font-size:16px;
    color:var(--muted);
    max-width:640px;
  }
  .band-tags{
    display:flex;
    flex-wrap:wrap;
    gap:10px;
    margin-top:24px;
  }
  .pill{
    display:inline-flex;
    align-items:center;
    gap:6px;
    padding:6px 14px;
    border-radius:var(--r-pill);
    font-size:13px;
    color:var(--brand-dark);
    background:rgba(14,124,134,.07);
    border:1px solid var(--brand-line);
  }
  .band-figure{
    border-radius:18px;
    overflow:hidden;
    box-shadow:var(--shadow-card);
    border:1px solid var(--line);
    background:#fff;
  }
  .band-figure img{width:100%;height:210px;object-fit:cover;}

  /* ---------------- 通用板块 ---------------- */
  .section{padding:84px 0;scroll-margin-top:90px;}
  .section--tight{padding:64px 0;}
  .section-head{max-width:720px;margin-bottom:36px;}
  .section-head h2{
    font-size:clamp(22px,2.5vw,32px);
    line-height:1.3;
    font-weight:700;
    letter-spacing:-.01em;
  }
  .section-head p{margin-top:12px;color:var(--muted);font-size:16px;}
  .eyebrow{
    display:inline-block;
    font-size:13px;
    letter-spacing:.16em;
    text-transform:uppercase;
    color:var(--brand);
    margin-bottom:14px;
    font-weight:700;
  }

  /* ---------------- 左文右图 ---------------- */
  .split{
    display:grid;
    grid-template-columns:minmax(0,1.4fr) minmax(0,1fr);
    gap:36px;
    align-items:start;
  }
  .prose p{color:#2C3A49;font-size:16px;margin-bottom:18px;}
  .prose p:last-child{margin-bottom:0;}

  .bullet-list{margin-top:28px;display:grid;gap:14px;}
  .bullet-list li{
    display:flex;
    gap:12px;
    align-items:flex-start;
    background:#fff;
    border:1px solid var(--line);
    border-radius:14px;
    padding:16px 18px;
    box-shadow:var(--shadow-card);
    transition:transform .18s ease,box-shadow .18s ease,border-color .18s ease;
  }
  .bullet-list li:hover{
    transform:translateY(-3px);
    box-shadow:var(--shadow-hover);
    border-color:var(--brand-line);
  }
  .tick{
    width:24px;height:24px;
    flex:0 0 auto;
    margin-top:2px;
    border-radius:8px;
    display:grid;place-items:center;
    background:var(--brand-soft);
    border:1px solid var(--brand-line);
    color:var(--brand);
  }
  .bullet-list span.txt{font-size:15px;line-height:1.65;color:#2C3A49;}

  .sticky-card{
    position:sticky;
    top:88px;
    display:grid;
    gap:18px;
  }
  .figure-card{
    background:#fff;
    border:1px solid var(--line);
    border-radius:var(--r-card);
    overflow:hidden;
    box-shadow:var(--shadow-card);
  }
  .figure-card img{width:100%;height:240px;object-fit:cover;border-bottom:1px solid var(--line);}
  .figure-card .figure-body{padding:20px 22px 22px;}
  .figure-card h3{font-size:17px;font-weight:600;}
  .figure-card p{margin-top:8px;font-size:14px;color:var(--muted);}
  .mini-stats{
    display:flex;
    gap:18px;
    margin-top:18px;
    padding-top:16px;
    border-top:1px solid var(--line);
  }
  .mini-stats div{flex:1 1 0;}
  .mini-stats b{
    display:block;
    font-size:20px;
    font-variant-numeric:tabular-nums;
    color:var(--brand-dark);
    font-weight:700;
  }
  .mini-stats span{font-size:12.5px;color:var(--muted);}

  .btn{
    display:inline-flex;
    align-items:center;
    justify-content:center;
    gap:8px;
    height:46px;
    padding:0 24px;
    border-radius:var(--r-btn);
    font-size:15px;
    font-weight:600;
    transition:transform .18s ease,box-shadow .18s ease,background .18s ease,color .18s ease,border-color .18s ease;
  }
  .btn-primary{background:var(--brand);color:#fff;box-shadow:0 10px 22px -14px rgba(14,124,134,.9);}
  .btn-primary:hover{background:var(--brand-dark);transform:translateY(-1px);box-shadow:0 14px 26px -14px rgba(10,95,104,.95);}
  .btn-ghost{background:#fff;color:var(--ink);border:1px solid var(--line);}
  .btn-ghost:hover{border-color:var(--brand);color:var(--brand);transform:translateY(-1px);}
  .btn-ghost--wide{width:100%;}

  /* ---------------- 步骤条 ---------------- */
  .steps{
    display:grid;
    grid-template-columns:repeat(4,minmax(0,1fr));
    gap:0;
    counter-reset:step;
  }
  .step{position:relative;padding-right:26px;}
  .step::after{
    content:"";
    position:absolute;
    top:19px;
    left:44px;
    right:6px;
    height:1px;
    background:linear-gradient(90deg,rgba(14,124,134,.55),rgba(14,124,134,.12));
  }
  .step:last-child{padding-right:0;}
  .step:last-child::after{
    background:linear-gradient(90deg,rgba(255,106,43,.7),rgba(255,106,43,.08));
  }
  .step-num{
    width:38px;height:38px;
    border-radius:50%;
    display:grid;place-items:center;
    background:var(--brand);
    color:#fff;
    font-weight:700;
    font-size:15px;
    font-variant-numeric:tabular-nums;
    box-shadow:0 8px 18px -10px rgba(14,124,134,.95);
    position:relative;z-index:1;
  }
  .step:last-child .step-num{
    background:var(--orange);
    box-shadow:0 8px 18px -10px rgba(255,106,43,.95);
  }
  .step h3{margin-top:16px;font-size:17px;font-weight:600;}
  .step p{margin-top:8px;font-size:14px;color:var(--muted);line-height:1.7;}

  .guide-figure{
    margin-top:44px;
    border-radius:18px;
    overflow:hidden;
    border:1px solid var(--line);
    box-shadow:var(--shadow-card);
    background:#fff;
  }
  .guide-figure img{width:100%;height:280px;object-fit:cover;}

  /* ---------------- 自查清单 ---------------- */
  .check-grid{
    display:grid;
    grid-template-columns:repeat(3,minmax(0,1fr));
    gap:20px;
  }
  .check-card{
    background:#fff;
    border:1px solid var(--line);
    border-radius:var(--r-card);
    padding:22px;
    box-shadow:var(--shadow-card);
    transition:transform .18s ease,box-shadow .18s ease,border-color .18s ease;
  }
  .check-card:hover{transform:translateY(-3px);box-shadow:var(--shadow-hover);border-color:var(--brand-line);}
  .check-card:nth-child(2){transform:translateY(14px);}
  .check-card:nth-child(2):hover{transform:translateY(11px);}
  .check-card:nth-child(3){transform:translateY(28px);}
  .check-card:nth-child(3):hover{transform:translateY(25px);}
  .check-card h3{
    display:flex;
    align-items:center;
    gap:10px;
    font-size:16px;
    font-weight:600;
  }
  .check-card h3 i{
    width:30px;height:30px;
    border-radius:10px;
    display:grid;place-items:center;
    background:var(--brand-soft);
    border:1px solid var(--brand-line);
    color:var(--brand);
    font-style:normal;
    font-size:14px;
    font-weight:700;
  }
  .check-card p{margin-top:12px;font-size:14px;color:var(--muted);line-height:1.75;}

  .flat-list{
    margin-top:46px;
    background:#fff;
    border:1px solid var(--line);
    border-radius:var(--r-card);
    box-shadow:var(--shadow-card);
    padding:8px 26px;
  }
  .flat-list li{
    display:flex;
    gap:14px;
    align-items:flex-start;
    padding:18px 0;
    border-bottom:1px solid var(--line);
  }
  .flat-list li:last-child{border-bottom:0;}
  .flat-list .idx{
    flex:0 0 auto;
    width:26px;height:26px;
    border-radius:8px;
    display:grid;place-items:center;
    color:var(--brand);
    background:var(--brand-soft);
    font-size:12.5px;
    font-weight:700;
    font-variant-numeric:tabular-nums;
    margin-top:2px;
  }
  .flat-list strong{display:block;font-size:15px;font-weight:600;color:var(--ink);}
  .flat-list em{font-style:normal;font-size:14px;color:var(--muted);}

  /* ---------------- FAQ ---------------- */
  .faq-wrap{
    background:#fff;
    border:1px solid var(--line);
    border-radius:var(--r-card);
    box-shadow:var(--shadow-card);
    padding:0 26px;
  }
  .faq-item{border-bottom:1px solid var(--line);}
  .faq-item:last-child{border-bottom:0;}
  .faq-q{
    width:100%;
    display:flex;
    align-items:center;
    justify-content:space-between;
    gap:18px;
    padding:22px 0 22px 14px;
    text-align:left;
    font-size:16px;
    font-weight:600;
    color:var(--ink);
    position:relative;
    transition:color .2s ease;
  }
  .faq-q::before{
    content:"";
    position:absolute;
    left:0;top:22px;bottom:22px;
    width:3px;
    border-radius:3px;
    background:var(--brand);
    transform:scaleY(0);
    transform-origin:center;
    transition:transform .2s ease;
  }
  .faq-item.is-open .faq-q::before{transform:scaleY(1);}
  .faq-q:hover{color:var(--brand);}
  .faq-icon{
    flex:0 0 auto;
    width:26px;height:26px;
    border-radius:50%;
    display:grid;place-items:center;
    border:1px solid var(--line);
    color:var(--brand);
    font-size:17px;
    line-height:1;
    transition:transform .2s ease,background .2s ease,border-color .2s ease;
  }
  .faq-item.is-open .faq-icon{
    transform:rotate(180deg);
    background:var(--brand-soft);
    border-color:var(--brand-line);
  }
  .faq-a{
    max-height:0;
    overflow:hidden;
    transition:max-height .2s ease;
  }
  .faq-a p{
    padding:0 44px 22px 14px;
    font-size:15px;
    color:var(--muted);
    line-height:1.8;
  }

  /* ---------------- 深色 CTA ---------------- */
  .dark-band{
    position:relative;
    background-color:var(--dark);
    color:#fff;
    border-radius:18px;
    overflow:hidden;
    padding:44px 42px;
    background-image:url('/assets/images/backpic/back-3.webp');
    background-size:cover;
    background-position:center;
  }
  .dark-band::before{
    content:"";
    position:absolute;inset:0;
    background:linear-gradient(100deg,rgba(11,18,32,.96) 0%,rgba(11,18,32,.86) 58%,rgba(11,18,32,.7) 100%);
  }
  .dark-band::after{
    content:"";
    position:absolute;
    left:0;right:0;top:0;
    height:1px;
    background:linear-gradient(90deg,rgba(53,224,208,.9),rgba(53,224,208,.05) 60%,rgba(255,122,69,.6));
  }
  .dark-band-inner{
    position:relative;
    z-index:1;
    display:flex;
    align-items:center;
    justify-content:space-between;
    gap:28px;
  }
  .dark-band h2{font-size:clamp(20px,2.2vw,26px);line-height:1.35;font-weight:700;}
  .dark-band p{margin-top:10px;color:rgba(255,255,255,.7);font-size:15px;max-width:560px;}
  .dark-band .btn-primary{background:var(--orange);color:#141A22;flex:0 0 auto;}
  .dark-band .btn-primary:hover{background:#FF8248;box-shadow:0 0 22px rgba(255,122,69,.6);}

  /* ---------------- 页脚 ---------------- */
  .site-footer{
    position:relative;
    background:var(--dark);
    color:#fff;
    margin-top:84px;
    padding-top:0;
  }
  .site-footer::before{
    content:"";
    position:absolute;
    left:0;right:0;top:0;
    height:1px;
    background:linear-gradient(90deg,rgba(53,224,208,.9),rgba(255,122,69,.6) 65%,rgba(53,224,208,.1));
  }
  .footer-grid{
    display:grid;
    grid-template-columns:1.4fr 1fr 1fr 1fr;
    gap:32px;
    padding:56px 0 34px;
  }
  .footer-brand{display:flex;align-items:center;gap:11px;margin-bottom:16px;}
  .footer-col h4{font-size:14px;font-weight:700;color:#fff;margin-bottom:16px;letter-spacing:.02em;}
  .footer-col p{font-size:13.5px;line-height:1.8;color:rgba(255,255,255,.62);}
  .footer-col ul{display:grid;gap:11px;}
  .footer-col ul a{
    font-size:14px;
    color:rgba(255,255,255,.7);
    border-bottom:1px solid transparent;
    padding-bottom:1px;
  }
  .footer-col ul a:hover{
    color:var(--neon);
    border-bottom-color:var(--neon);
  }
  .footer-bottom{
    display:flex;
    align-items:center;
    justify-content:space-between;
    gap:16px;
    flex-wrap:wrap;
    padding:18px 0 30px;
    border-top:1px solid rgba(255,255,255,.08);
    font-size:13px;
    color:rgba(255,255,255,.55);
  }
  .footer-bottom a{color:rgba(255,255,255,.72);}
  .footer-bottom a:hover{color:var(--neon);}

  /* ---------------- 浮动 CTA ---------------- */
  .float-cta{
    position:fixed;
    right:26px;
    bottom:26px;
    z-index:50;
    display:inline-flex;
    align-items:center;
    gap:9px;
    height:50px;
    padding:0 24px;
    border-radius:var(--r-pill);
    background:var(--brand);
    color:#fff;
    font-weight:700;
    font-size:15px;
    box-shadow:0 0 0 1px rgba(255,122,69,.5),0 14px 30px -12px rgba(14,124,134,.9),0 0 22px rgba(255,122,69,.4);
    transition:transform .18s ease,box-shadow .18s ease,background .18s ease;
  }
  .float-cta:hover{
    background:var(--brand-dark);
    transform:translateY(-2px);
    box-shadow:0 0 0 1px rgba(255,122,69,.7),0 18px 34px -12px rgba(10,95,104,.95),0 0 26px rgba(255,122,69,.55);
  }

  /* ---------------- 响应式 ---------------- */
  @media (max-width:1023px){
    .nav-links{display:none;}
    .nav-toggle{display:flex;}
    .nav-cta{display:none;}
    .header-inner{min-height:56px;}
    .band-grid{grid-template-columns:1fr;gap:28px;}
    .split{grid-template-columns:1fr;gap:28px;}
    .sticky-card{position:static;}
    .steps{grid-template-columns:repeat(2,minmax(0,1fr));gap:30px 0;}
    .step:nth-child(2)::after{display:none;}
    .step:nth-child(4)::after{display:none;}
    .check-grid{grid-template-columns:1fr 1fr;}
    .check-card:nth-child(2),
    .check-card:nth-child(3){transform:none;}
    .check-card:nth-child(2):hover,
    .check-card:nth-child(3):hover{transform:translateY(-3px);}
    .footer-grid{grid-template-columns:1fr 1fr;padding:48px 0 30px;}
    .section{padding:66px 0;}
  }

  @media (max-width:767px){
    .container{padding:0 18px;}
    .page-band{padding:40px 0 40px;}
    .band-figure img{height:180px;}
    .section{padding:52px 0;}
    .section--tight{padding:48px 0;}
    .section-head{margin-bottom:26px;}
    .steps{grid-template-columns:1fr;gap:0;}
    .step{
      padding:0 0 26px 30px;
      border-left:1px solid rgba(14,124,134,.3);
      margin-left:18px;
    }
    .step:last-child{border-left-color:rgba(255,106,43,.45);padding-bottom:0;}
    .step::after{display:none;}
    .step-num{position:absolute;left:-19px;top:0;width:34px;height:34px;font-size:14px;}
    .step h3{margin-top:2px;}
    .check-grid{grid-template-columns:1fr;gap:16px;}
    .guide-figure img{height:190px;}
    .faq-wrap{padding:0 18px;}
    .faq-a p{padding-right:8px;}
    .dark-band{padding:30px 22px;border-radius:16px;}
    .dark-band-inner{flex-direction:column;align-items:flex-start;}
    .dark-band .btn{width:100%;}
    .footer-grid{grid-template-columns:1fr;gap:26px;padding:40px 0 26px;}
    .footer-bottom{flex-direction:column;align-items:flex-start;}
    .float-cta{
      right:0;left:0;bottom:0;
      width:100%;
      height:56px;
      border-radius:0;
      justify-content:center;
      padding:0 18px 0 18px;
      padding-bottom:env(safe-area-inset-bottom,0);
      box-shadow:0 -8px 24px -12px rgba(11,18,32,.5),0 0 0 1px rgba(255,122,69,.35);
    }
    .site-footer{padding-bottom:56px;margin-top:60px;}
  }

  @media (prefers-reduced-motion:reduce){
    *{transition:none !important;animation:none !important;scroll-behavior:auto !important;}
  }

/* roulang page: category2 */
:root {
    --brand: #0E7C86;
    --brand-deep: #0A5F68;
    --brand-soft: #E6F3F4;
    --accent: #FF6A2B;
    --accent-soft: #FFF0E8;
    --bg: #F6F8FA;
    --card: #FFFFFF;
    --line: #E3E9EF;
    --ink: #16202E;
    --muted: #5B6B7C;
    --deep: #0B1220;
    --deep-2: #131C2E;
    --neon: #35E0D0;
    --neon-2: #FF7A45;
    --radius-card: 16px;
    --radius-btn: 10px;
    --shadow-card: 0 1px 2px rgba(11,18,32,.04), 0 8px 24px -12px rgba(11,18,32,.12);
    --shadow-lift: 0 16px 40px -16px rgba(11,18,32,.18);
    --container: 1200px;
  }

  *, *::before, *::after { box-sizing: border-box; }
  html { -webkit-text-size-adjust: 100%; scroll-behavior: smooth; }
  body {
    margin: 0;
    background: var(--bg);
    color: var(--ink);
    font-family: -apple-system, BlinkMacSystemFont, "PingFang SC", "Microsoft YaHei", "Noto Sans SC", system-ui, sans-serif;
    font-size: 16px;
    line-height: 1.75;
    -webkit-font-smoothing: antialiased;
  }
  img { max-width: 100%; display: block; }
  a { color: var(--brand); text-decoration: none; }
  a:hover { color: var(--brand-deep); }
  button { font: inherit; cursor: pointer; }
  h1, h2, h3, h4 { margin: 0; line-height: 1.3; font-weight: 700; }
  p { margin: 0; }
  ul { margin: 0; padding: 0; list-style: none; }
  :focus-visible { outline: 2px solid var(--brand); outline-offset: 2px; border-radius: 4px; }

  .container { width: 100%; max-width: var(--container); margin: 0 auto; padding: 0 24px; }
  .section { padding: 88px 0; }
  .section-tight { padding: 64px 0; }
  .section-head { max-width: 720px; margin-bottom: 40px; }
  .section-head .eyebrow {
    display: inline-flex; align-items: center; gap: 8px;
    font-size: 13px; font-weight: 600; letter-spacing: .08em;
    color: var(--brand); text-transform: uppercase; margin-bottom: 14px;
  }
  .section-head .eyebrow::before { content: ""; width: 22px; height: 2px; background: var(--accent); border-radius: 2px; }
  .section-head h2 { font-size: clamp(22px, 2.6vw, 32px); margin-bottom: 12px; }
  .section-head p { color: var(--muted); font-size: 15.5px; }
  .num { font-variant-numeric: tabular-nums; }

  /* ============ 顶部导航 ============ */
  .site-header {
    position: sticky; top: 0; z-index: 60;
    background: rgba(11, 18, 32, .92);
    backdrop-filter: blur(12px);
    -webkit-backdrop-filter: blur(12px);
  }
  .site-header::after {
    content: ""; position: absolute; left: 0; right: 0; bottom: 0; height: 1px;
    background: linear-gradient(90deg, rgba(53,224,208,.9), rgba(53,224,208,.15) 45%, rgba(255,122,69,0) 90%);
  }
  .nav-wrap {
    display: flex; align-items: center; justify-content: space-between;
    gap: 24px; height: 64px;
  }
  .brand { display: flex; align-items: center; gap: 10px; }
  .brand-mark {
    width: 38px; height: 38px; border-radius: 11px; flex: none;
    display: grid; place-items: center;
    background: linear-gradient(140deg, var(--brand), var(--brand-deep));
    color: #fff; font-weight: 700; font-size: 17px;
    box-shadow: 0 0 0 1px rgba(53,224,208,.35), 0 6px 18px -8px rgba(53,224,208,.55);
  }
  .brand-text { display: flex; flex-direction: column; line-height: 1.15; }
  .brand-name { color: #fff; font-size: 16px; font-weight: 700; letter-spacing: .02em; }
  .brand-sub { color: rgba(255,255,255,.55); font-size: 11px; letter-spacing: .18em; }
  .nav-links { display: flex; align-items: center; gap: 6px; }
  .nav-links a {
    position: relative; display: inline-flex; align-items: center; height: 64px;
    padding: 0 14px; color: rgba(255,255,255,.72); font-size: 15px;
    transition: color .18s ease-out;
  }
  .nav-links a::after {
    content: ""; position: absolute; left: 14px; right: 14px; bottom: 16px; height: 2px;
    background: var(--neon); border-radius: 2px; opacity: 0; transform: scaleX(.4);
    transition: opacity .18s ease-out, transform .18s ease-out;
  }
  .nav-links a:hover { color: #fff; }
  .nav-links a:hover::after { opacity: .5; transform: scaleX(1); }
  .nav-links a.is-active { color: var(--neon); }
  .nav-links a.is-active::after { opacity: 1; transform: scaleX(1); box-shadow: 0 0 12px rgba(53,224,208,.9); }
  .nav-cta {
    display: inline-flex; align-items: center; gap: 8px; height: 40px; padding: 0 18px;
    border-radius: 999px; background: var(--accent); color: #1a0d05; font-size: 14px; font-weight: 700;
    transition: box-shadow .18s ease-out, transform .18s ease-out;
  }
  .nav-cta:hover { color: #150a03; box-shadow: 0 0 20px rgba(255,122,69,.65); transform: translateY(-1px); }
  .nav-toggle {
    display: none; width: 44px; height: 44px; border-radius: 10px;
    background: rgba(255,255,255,.06); border: 1px solid rgba(255,255,255,.14);
    color: #fff; align-items: center; justify-content: center;
  }
  .drawer {
    display: none; background: var(--deep); border-top: 1px solid rgba(53,224,208,.18);
    padding: 12px 0 20px;
  }
  .drawer.is-open { display: block; }
  .drawer a {
    display: block; padding: 14px 24px; color: rgba(255,255,255,.82);
    font-size: 17px; border-left: 4px solid transparent;
  }
  .drawer a.is-active { color: var(--neon); border-left-color: var(--neon); background: rgba(53,224,208,.06); }

  /* ============ 页头 band ============ */
  .page-band {
    position: relative; overflow: hidden;
    background:
      radial-gradient(560px 240px at 88% -10%, rgba(255,106,43,.10), transparent 70%),
      radial-gradient(520px 260px at 4% 0%, rgba(14,124,134,.12), transparent 68%),
      linear-gradient(180deg, #FFFFFF, #F1F6F7);
    border-bottom: 1px solid var(--line);
  }
  .band-grid {
    display: grid; grid-template-columns: 1.35fr .85fr; gap: 48px; align-items: center;
    padding: 64px 0 68px;
  }
  .breadcrumb { display: flex; flex-wrap: wrap; gap: 8px; font-size: 13px; color: var(--muted); margin-bottom: 18px; }
  .breadcrumb a { color: var(--muted); }
  .breadcrumb a:hover { color: var(--brand); }
  .breadcrumb span.sep { color: #b7c2cd; }
  .page-band h1 {
    font-size: clamp(30px, 4.2vw, 46px); line-height: 1.15; font-weight: 700;
    margin-bottom: 16px; letter-spacing: -.01em;
  }
  .page-band h1 em { font-style: normal; color: var(--brand); }
  .band-lead { color: var(--muted); font-size: 16.5px; max-width: 620px; }
  .band-tags { display: flex; flex-wrap: wrap; gap: 10px; margin-top: 26px; }
  .tag-pill {
    display: inline-flex; align-items: center; gap: 6px;
    padding: 7px 14px; border-radius: 999px; font-size: 13px; font-weight: 600;
    color: var(--brand-deep); background: var(--brand-soft); border: 1px solid rgba(14,124,134,.22);
  }
  .band-figure {
    border-radius: 20px; overflow: hidden; border: 1px solid var(--line);
    box-shadow: var(--shadow-card); background: #dfe6ea;
  }
  .band-figure img { width: 100%; height: 290px; object-fit: cover; }

  /* ============ 三列信息卡（错位递减） ============ */
  .info-grid { display: grid; grid-template-columns: repeat(3, 1fr); gap: 24px; align-items: start; }
  .info-card {
    background: var(--card); border: 1px solid var(--line); border-radius: var(--radius-card);
    padding: 30px 28px; box-shadow: var(--shadow-card);
    transition: transform .18s ease-out, box-shadow .18s ease-out, border-color .18s ease-out;
  }
  .info-card:hover { transform: translateY(-3px); box-shadow: var(--shadow-lift); border-color: rgba(14,124,134,.35); }
  .info-card.stagger-2 { margin-top: 30px; }
  .info-card.stagger-3 { margin-top: 60px; }
  .info-card .icon-box {
    width: 44px; height: 44px; border-radius: 12px; display: grid; place-items: center;
    background: var(--brand-soft); border: 1px solid rgba(14,124,134,.25);
    color: var(--brand-deep); font-weight: 700; font-size: 17px; margin-bottom: 18px;
  }
  .info-card h3 { font-size: 19px; margin-bottom: 10px; }
  .info-card p { color: var(--muted); font-size: 15px; }
  .info-card ul { margin-top: 16px; display: grid; gap: 9px; }
  .info-card ul li { display: flex; gap: 9px; font-size: 14px; color: var(--ink); }
  .info-card ul li::before {
    content: ""; flex: none; width: 6px; height: 6px; margin-top: 9px;
    border-radius: 50%; background: var(--accent);
  }
  .card-index {
    display: inline-block; font-size: 12px; font-weight: 700; letter-spacing: .12em;
    color: var(--brand); margin-bottom: 14px; font-variant-numeric: tabular-nums;
  }

  /* ============ 纵向时间线 ============ */
  .timeline-panel {
    background: var(--card); border: 1px solid var(--line); border-radius: 20px;
    padding: 44px 44px 36px; box-shadow: var(--shadow-card);
  }
  .timeline { position: relative; padding-left: 46px; }
  .timeline::before {
    content: ""; position: absolute; left: 15px; top: 8px; bottom: 12px; width: 2px;
    background: linear-gradient(180deg, var(--brand), rgba(14,124,134,.35) 60%, var(--accent));
    border-radius: 2px;
  }
  .tl-item { position: relative; padding-bottom: 34px; }
  .tl-item:last-child { padding-bottom: 0; }
  .tl-item .num-badge {
    position: absolute; left: -46px; top: 2px; width: 32px; height: 32px; border-radius: 50%;
    display: grid; place-items: center; font-size: 14px; font-weight: 700;
    background: var(--brand); color: #fff; border: 3px solid #fff;
    box-shadow: 0 0 0 1px rgba(14,124,134,.35);
    font-variant-numeric: tabular-nums;
  }
  .tl-item:last-child .num-badge { background: var(--accent); box-shadow: 0 0 0 1px rgba(255,106,43,.4); }
  .tl-item h3 { font-size: 18px; margin-bottom: 8px; }
  .tl-item p { color: var(--muted); font-size: 15.5px; }
  .tl-meta { display: flex; flex-wrap: wrap; gap: 10px; margin-top: 14px; }
  .mini-tag {
    font-size: 12.5px; padding: 4px 11px; border-radius: 999px;
    border: 1px solid rgba(14,124,134,.28); color: var(--brand-deep); background: #fff; font-weight: 600;
  }

  /* ============ 常见问题 ============ */
  .faq-panel {
    background: var(--card); border: 1px solid var(--line); border-radius: 20px;
    box-shadow: var(--shadow-card); overflow: hidden;
  }
  .faq-item + .faq-item { border-top: 1px solid var(--line); }
  .faq-q {
    width: 100%; display: flex; align-items: flex-start; justify-content: space-between; gap: 18px;
    padding: 22px 28px; background: transparent; border: 0; text-align: left;
    font-size: 16.5px; font-weight: 600; color: var(--ink); position: relative;
    transition: color .18s ease-out, background .18s ease-out;
  }
  .faq-q::before {
    content: ""; position: absolute; left: 0; top: 16px; bottom: 16px; width: 3px;
    background: var(--brand); border-radius: 0 3px 3px 0; opacity: 0; transition: opacity .2s ease-out;
  }
  .faq-q:hover { color: var(--brand); background: #FBFDFD; }
  .faq-item.is-open .faq-q::before { opacity: 1; }
  .faq-q .mark {
    flex: none; width: 24px; height: 24px; border-radius: 50%; border: 1px solid var(--line);
    display: grid; place-items: center; color: var(--brand); font-size: 15px; line-height: 1;
    transition: transform .2s ease-out, border-color .2s ease-out;
  }
  .faq-item.is-open .faq-q .mark { transform: rotate(180deg); border-color: rgba(14,124,134,.4); }
  .faq-a { max-height: 0; overflow: hidden; transition: max-height .24s ease-out; }
  .faq-a-inner { padding: 0 28px 24px 28px; color: var(--muted); font-size: 15px; }

  /* ============ 深色 CTA 带 ============ */
  .cta-band {
    background: linear-gradient(120deg, var(--deep), var(--deep-2));
    border-radius: 18px; padding: 40px 44px;
    display: flex; align-items: center; justify-content: space-between; gap: 28px;
    position: relative; overflow: hidden;
  }
  .cta-band::before {
    content: ""; position: absolute; inset: 0 0 auto 0; height: 1px;
    background: linear-gradient(90deg, var(--neon), rgba(255,122,69,.6) 60%, transparent);
  }
  .cta-band h2 { color: #fff; font-size: clamp(20px, 2.2vw, 26px); margin-bottom: 8px; }
  .cta-band p { color: rgba(255,255,255,.66); font-size: 15px; max-width: 620px; }
  .cta-band .actions { display: flex; flex-wrap: wrap; gap: 12px; flex: none; }

  .btn {
    display: inline-flex; align-items: center; justify-content: center; gap: 8px;
    height: 46px; padding: 0 24px; border-radius: var(--radius-btn);
    font-size: 15px; font-weight: 600; border: 1px solid transparent;
    transition: background .18s ease-out, color .18s ease-out, border-color .18s ease-out, transform .18s ease-out, box-shadow .18s ease-out;
  }
  .btn-primary { background: var(--brand); color: #fff; }
  .btn-primary:hover { background: var(--brand-deep); color: #fff; transform: translateY(-1px); box-shadow: 0 10px 24px -12px rgba(14,124,134,.7); }
  .btn-outline { background: #fff; color: var(--ink); border-color: var(--line); }
  .btn-outline:hover { color: var(--brand); border-color: rgba(14,124,134,.5); }
  .btn-accent { background: var(--accent); color: #1a0d05; }
  .btn-accent:hover { color: #150a03; transform: translateY(-1px); box-shadow: 0 0 20px rgba(255,122,69,.6); }
  .btn-neon { background: transparent; color: var(--neon); border-color: rgba(53,224,208,.45); }
  .btn-neon:hover { color: #fff; box-shadow: 0 0 18px rgba(53,224,208,.45); }
  .btn-ghost-light { background: rgba(255,255,255,.08); color: #fff; border-color: rgba(255,255,255,.22); }
  .btn-ghost-light:hover { color: #fff; border-color: rgba(53,224,208,.6); }

  /* ============ 页脚 ============ */
  .site-footer {
    background: var(--deep); color: rgba(255,255,255,.7); position: relative; margin-top: 8px;
  }
  .site-footer::before {
    content: ""; position: absolute; top: 0; left: 0; right: 0; height: 1px;
    background: linear-gradient(90deg, var(--neon), rgba(255,122,69,.55) 55%, transparent);
  }
  .footer-grid {
    display: grid; grid-template-columns: 1.4fr 1fr 1fr 1fr; gap: 32px;
    padding: 56px 0 40px;
  }
  .footer-brand { display: flex; align-items: center; gap: 10px; margin-bottom: 16px; }
  .footer-brand .brand-text { display: flex; flex-direction: column; line-height: 1.15; }
  .footer-col h4 { color: #fff; font-size: 14px; margin-bottom: 16px; letter-spacing: .04em; }
  .footer-col p { font-size: 14px; line-height: 1.8; color: rgba(255,255,255,.62); max-width: 340px; }
  .footer-col ul { display: grid; gap: 11px; }
  .footer-col ul a {
    color: rgba(255,255,255,.7); font-size: 14px; padding-bottom: 1px;
    border-bottom: 1px solid transparent; transition: color .18s ease-out, border-color .18s ease-out;
  }
  .footer-col ul a:hover { color: var(--neon); border-bottom-color: var(--neon); }
  .footer-bottom {
    display: flex; flex-wrap: wrap; gap: 10px 24px; justify-content: space-between;
    padding: 20px 0 28px; border-top: 1px solid rgba(255,255,255,.08); font-size: 13px; color: rgba(255,255,255,.5);
  }
  .footer-bottom a { color: rgba(255,255,255,.62); }
  .footer-bottom a:hover { color: var(--neon); }

  /* ============ 浮动 CTA ============ */
  .float-cta {
    position: fixed; right: 24px; bottom: 28px; z-index: 50;
    display: inline-flex; align-items: center; gap: 8px;
    height: 50px; padding: 0 22px; border-radius: 999px;
    background: var(--brand); color: #fff; font-size: 15px; font-weight: 700;
    box-shadow: 0 0 0 1px rgba(255,106,43,.5), 0 0 22px rgba(255,106,43,.45), 0 14px 30px -14px rgba(11,18,32,.6);
    transition: transform .18s ease-out, box-shadow .18s ease-out, background .18s ease-out;
  }
  .float-cta:hover { color: #fff; background: var(--brand-deep); transform: translateY(-2px); }

  /* ============ 响应式 ============ */
  @media (max-width: 1024px) {
    .band-grid { grid-template-columns: 1fr; gap: 32px; padding: 48px 0 52px; }
    .band-figure img { height: 230px; }
    .info-grid { grid-template-columns: 1fr 1fr; }
    .info-card.stagger-3 { margin-top: 0; }
    .footer-grid { grid-template-columns: 1fr 1fr; }
  }
  @media (max-width: 768px) {
    .nav-links, .nav-cta { display: none; }
    .nav-toggle { display: inline-flex; }
    .nav-wrap { height: 56px; }
    .section { padding: 56px 0; }
    .section-tight { padding: 44px 0; }
    .container { padding: 0 18px; }
    .info-grid { grid-template-columns: 1fr; gap: 16px; }
    .info-card.stagger-2, .info-card.stagger-3 { margin-top: 0; }
    .timeline-panel { padding: 28px 22px 26px; }
    .timeline { padding-left: 40px; }
    .timeline::before { left: 13px; }
    .tl-item .num-badge { left: -40px; }
    .faq-q { padding: 18px 20px; font-size: 15.5px; }
    .faq-a-inner { padding: 0 20px 20px 20px; }
    .cta-band { flex-direction: column; align-items: flex-start; padding: 30px 24px; }
    .float-cta {
      left: 0; right: 0; bottom: 0; height: 54px; border-radius: 0; justify-content: center;
      padding-bottom: env(safe-area-inset-bottom);
      padding-left: 18px; padding-right: 18px;
    }
    .site-footer { padding-bottom: 54px; }
  }
  @media (max-width: 520px) {
    .footer-grid { grid-template-columns: 1fr; gap: 28px; padding: 40px 0 28px; }
    .band-tags { gap: 8px; }
    .btn { width: 100%; }
    .cta-band .actions { width: 100%; flex-direction: column; }
  }
  @media (prefers-reduced-motion: reduce) {
    * { animation: none !important; transition: none !important; }
    html { scroll-behavior: auto; }
  }