/* roulang page: index */
:root{
  --primary:#24536B;
  --primary-dark:#1B4155;
  --primary-soft:#EAF0F4;
  --accent:#C77D3A;
  --accent-soft:#FBF1E7;
  --green:#2F8F83;
  --green-soft:#E8F4F2;
  --bg:#F7F8FA;
  --bg-warm:#FCFBF9;
  --card:#FFFFFF;
  --ink:#1B2A33;
  --muted:#5C6B78;
  --border:#E2E8EE;
  --line:#EEF2F5;
  --input-border:#D8E0E8;
  --footer:#0F2532;
  --r-card:16px;
  --r-btn:10px;
  --r-img:14px;
  --shadow:0 6px 20px rgba(18,42,60,.08);
  --shadow-lg:0 12px 28px rgba(18,42,60,.12);
  --container:1200px;
  --section:80px;
}
*{box-sizing:border-box;}
html{scroll-behavior:smooth;-webkit-text-size-adjust:100%;}
body{
  margin:0;
  font-family:system-ui,-apple-system,"PingFang SC","Microsoft YaHei","Noto Sans SC",sans-serif;
  font-size:16px;
  line-height:1.75;
  color:var(--ink);
  background:var(--bg);
  -webkit-font-smoothing:antialiased;
}
img{max-width:100%;display:block;border:0;}
a{color:inherit;text-decoration:none;transition:color .2s ease,background-color .2s ease,border-color .2s ease;}
ul{margin:0;padding:0;list-style:none;}
h1,h2,h3,h4{margin:0;font-weight:700;letter-spacing:-.01em;line-height:1.3;}
p{margin:0;}
button,input,select,textarea{font:inherit;color:inherit;}
button{cursor:pointer;border:0;background:none;}
table{border-collapse:collapse;width:100%;}
.container{width:100%;max-width:var(--container);margin:0 auto;padding:0 24px;}
.section{padding:var(--section) 0;}
.section-warm{background:var(--bg-warm);}
.section-white{background:#fff;}
.section-head{max-width:720px;margin-bottom:44px;}
.eyebrow{display:inline-flex;align-items:center;gap:6px;font-size:13px;font-weight:600;letter-spacing:.08em;color:var(--accent);text-transform:uppercase;margin-bottom:14px;}
.eyebrow::before{content:"";width:22px;height:2px;background:var(--accent);border-radius:2px;}
.section-title{font-size:clamp(24px,3vw,32px);font-weight:700;}
.section-desc{margin-top:14px;color:var(--muted);font-size:15.5px;line-height:1.8;}
.num{font-variant-numeric:tabular-nums;}

/* 顶部倒计时条 */
.topbar{background:var(--footer);color:#D6E1E8;font-size:14px;}
.topbar-inner{display:flex;align-items:center;gap:18px;min-height:44px;flex-wrap:nowrap;}
.topbar-label{display:flex;align-items:center;gap:8px;color:#fff;font-weight:600;white-space:nowrap;}
.topbar-dot{width:7px;height:7px;border-radius:50%;background:var(--accent);box-shadow:0 0 0 4px rgba(199,125,58,.22);}
.countdown{display:flex;align-items:center;gap:6px;margin-left:auto;color:#9FB3C0;font-size:13px;}
.cd-unit{display:inline-flex;align-items:baseline;gap:4px;}
.cd-num{display:inline-flex;min-width:34px;justify-content:center;padding:2px 8px;border-radius:6px;background:rgba(199,125,58,.92);color:#fff;font-weight:700;font-variant-numeric:tabular-nums;}
.topbar-link{display:inline-flex;align-items:center;gap:4px;color:#fff;font-size:13.5px;border-bottom:1px solid rgba(255,255,255,.35);white-space:nowrap;}
.topbar-link:hover{color:var(--accent);border-color:var(--accent);}

/* 导航 */
.site-header{position:absolute;top:44px;left:0;right:0;z-index:80;transition:top .25s ease;}
.site-header.is-stuck{position:fixed;top:0;}
.header-inner{
  display:flex;align-items:center;gap:18px;height:76px;padding:0 20px;
  border-radius:14px;
  background:rgba(255,255,255,.68);
  -webkit-backdrop-filter:blur(16px) saturate(1.2);
  backdrop-filter:blur(16px) saturate(1.2);
  border:1px solid rgba(255,255,255,.55);
  box-shadow:0 8px 24px rgba(18,42,60,.08);
  transition:background .25s ease,box-shadow .25s ease,border-radius .25s ease,border-color .25s ease;
}
.site-header.is-stuck .header-inner{
  background:rgba(255,255,255,.96);
  border-radius:0;
  border-color:transparent;
  border-bottom:1px solid var(--border);
  box-shadow:0 4px 18px rgba(18,42,60,.07);
}
.site-header.is-stuck .header-wrap{padding:0;}
.brand{display:flex;align-items:center;gap:10px;flex-shrink:0;}
.brand-mark{width:38px;height:38px;flex-shrink:0;}
.brand-text{display:flex;flex-direction:column;line-height:1.15;}
.brand-name{font-size:17px;font-weight:700;letter-spacing:-.01em;color:var(--ink);}
.brand-sub{font-size:11.5px;color:var(--muted);letter-spacing:.06em;}
.nav-list{display:flex;align-items:center;gap:4px;margin-left:auto;}
.nav-link{display:inline-flex;align-items:center;height:40px;padding:0 13px;border-radius:999px;font-size:14.5px;color:var(--ink);white-space:nowrap;}
.nav-link:hover{background:var(--primary-soft);color:var(--primary);}
.nav-link.is-active{background:rgba(36,83,107,.1);color:var(--primary);font-weight:600;}
.header-tools{display:flex;align-items:center;gap:10px;flex-shrink:0;}
.icon-btn{width:42px;height:42px;display:inline-flex;align-items:center;justify-content:center;border-radius:50%;border:1px solid var(--border);background:#fff;color:var(--primary);transition:.2s;}
.icon-btn:hover{background:var(--primary-soft);border-color:#C9D8E2;}
.nav-toggle{display:none;width:44px;height:44px;align-items:center;justify-content:center;border-radius:10px;border:1px solid var(--border);background:#fff;}
.nav-toggle span{display:block;width:18px;height:2px;background:var(--primary);border-radius:2px;position:relative;}
.nav-toggle span::before,.nav-toggle span::after{content:"";position:absolute;left:0;width:18px;height:2px;background:var(--primary);border-radius:2px;}
.nav-toggle span::before{top:-6px;}
.nav-toggle span::after{top:6px;}

/* 抽屉 */
.drawer-mask{position:fixed;inset:0;background:rgba(15,37,50,.45);opacity:0;visibility:hidden;transition:.25s;z-index:90;}
.drawer-mask.is-open{opacity:1;visibility:visible;}
.nav-drawer{position:fixed;top:0;right:0;bottom:0;width:82%;max-width:340px;background:#fff;z-index:100;transform:translateX(102%);transition:transform .3s ease;display:flex;flex-direction:column;padding:22px;box-shadow:-12px 0 32px rgba(18,42,60,.16);}
.nav-drawer.is-open{transform:translateX(0);}
.drawer-head{display:flex;align-items:center;justify-content:space-between;margin-bottom:18px;}
.drawer-close{width:40px;height:40px;border-radius:10px;border:1px solid var(--border);display:flex;align-items:center;justify-content:center;color:var(--primary);font-size:20px;}
.drawer-list{display:flex;flex-direction:column;gap:4px;}
.drawer-list a{display:flex;align-items:center;min-height:48px;padding:0 14px;border-radius:10px;font-size:15.5px;color:var(--ink);}
.drawer-list a:hover,.drawer-list a.is-active{background:var(--primary-soft);color:var(--primary);font-weight:600;}
.drawer-foot{margin-top:auto;display:flex;flex-direction:column;gap:12px;padding-top:20px;border-top:1px solid var(--line);}

/* 按钮 */
.btn{display:inline-flex;align-items:center;justify-content:center;gap:8px;min-height:44px;padding:12px 22px;border-radius:var(--r-btn);border:1px solid transparent;font-size:15px;font-weight:600;cursor:pointer;transition:background-color .22s ease,box-shadow .22s ease,transform .12s ease,border-color .22s ease,color .22s ease;}
.btn-primary{background:var(--primary);color:#fff;}
.btn-primary:hover{background:var(--primary-dark);box-shadow:var(--shadow-lg);transform:translateY(-1px);}
.btn-primary:active{transform:translateY(1px);box-shadow:var(--shadow);}
.btn-outline{background:#fff;border-color:var(--primary);color:var(--primary);}
.btn-outline:hover{background:var(--primary-soft);}
.btn-ghost{background:rgba(255,255,255,.14);border-color:rgba(255,255,255,.4);color:#fff;}
.btn-ghost:hover{background:rgba(255,255,255,.24);}
.btn-block{width:100%;}
.btn:focus-visible,a:focus-visible,button:focus-visible,input:focus-visible,select:focus-visible,textarea:focus-visible{outline:2px solid var(--primary);outline-offset:2px;}
.btn[disabled]{opacity:.5;pointer-events:none;}
.link-more{display:inline-flex;align-items:center;gap:6px;color:var(--primary);font-size:14.5px;font-weight:600;}
.link-more:hover{color:var(--primary-dark);text-decoration:underline;text-underline-offset:4px;}

/* Hero */
.hero{position:relative;overflow:hidden;padding:158px 0 84px;background:linear-gradient(160deg,#EFF4F7 0%,#F7F8FA 62%,#FBF7F2 100%);}
.hero-bg{position:absolute;inset:0;background-image:url('/assets/images/backpic/back-1.png');background-size:cover;background-position:center;opacity:.14;}
.hero-grid{position:relative;display:grid;grid-template-columns:1.05fr .95fr;gap:56px;align-items:center;}
.hero-badge{display:inline-flex;align-items:center;gap:8px;padding:7px 14px;border-radius:999px;background:rgba(47,143,131,.12);color:#22685F;font-size:13.5px;font-weight:600;margin-bottom:20px;}
.hero h1{font-size:clamp(30px,4vw,46px);line-height:1.22;letter-spacing:-.02em;font-weight:750;}
.hero h1 em{font-style:normal;color:var(--primary);position:relative;}
.hero-sub{margin-top:20px;font-size:17.5px;line-height:1.8;color:var(--muted);max-width:560px;}
.hero-actions{display:flex;flex-wrap:wrap;gap:14px;margin-top:30px;}
.hero-trust{display:flex;flex-wrap:wrap;gap:14px 28px;margin-top:34px;padding-top:24px;border-top:1px solid rgba(36,83,107,.12);}
.hero-trust li{display:flex;align-items:center;gap:8px;font-size:14.5px;color:#3C4E5B;font-weight:500;}
.hero-trust svg{flex-shrink:0;color:var(--green);}
.hero-media{position:relative;}
.hero-media img{width:100%;height:auto;aspect-ratio:4/3;object-fit:cover;border-radius:20px;box-shadow:0 18px 44px rgba(18,42,60,.18);}
.hero-float{position:absolute;left:-18px;bottom:26px;background:#fff;border-radius:14px;padding:14px 18px;box-shadow:var(--shadow-lg);display:flex;align-items:center;gap:12px;}
.hero-float strong{display:block;font-size:20px;color:var(--primary);font-variant-numeric:tabular-nums;}
.hero-float span{font-size:12.5px;color:var(--muted);}
.hero-float .divider{width:1px;height:32px;background:var(--line);}

/* 卖点 */
.points-grid{display:grid;grid-template-columns:1.05fr .95fr;gap:24px;}
.point-feature{background:#fff;border:1px solid var(--border);border-radius:var(--r-card);overflow:hidden;box-shadow:var(--shadow);display:flex;flex-direction:column;transition:box-shadow .25s ease,transform .25s ease;}
.point-feature:hover{box-shadow:var(--shadow-lg);transform:translateY(-2px);}
.point-feature img{width:100%;aspect-ratio:16/9;object-fit:cover;}
.point-feature-body{padding:26px 26px 30px;}
.point-stack{display:grid;grid-template-rows:1fr 1fr;gap:24px;}
.point-card{background:#fff;border:1px solid var(--border);border-radius:var(--r-card);padding:26px;box-shadow:var(--shadow);transition:box-shadow .25s ease,transform .25s ease,border-color .25s ease;}
.point-card:hover{box-shadow:var(--shadow-lg);transform:translateY(-2px);border-color:#CFDCE5;}
.point-num{display:inline-flex;align-items:center;justify-content:center;width:40px;height:40px;border-radius:12px;background:var(--primary-soft);color:var(--primary);font-weight:700;font-size:15px;margin-bottom:16px;}
.point-card h3,.point-feature-body h3{font-size:20px;font-weight:700;margin-bottom:10px;}
.point-card p,.point-feature-body p{color:var(--muted);font-size:15px;line-height:1.8;}
.point-tagline{display:inline-block;font-size:12.5px;font-weight:600;color:var(--accent);background:var(--accent-soft);border-radius:999px;padding:4px 12px;margin-bottom:14px;}

/* 流程 */
.flow{display:grid;grid-template-columns:repeat(4,1fr);gap:0;background:#fff;border:1px solid var(--border);border-radius:var(--r-card);overflow:hidden;box-shadow:var(--shadow);}
.flow-step{padding:28px 24px;position:relative;border-right:1px dashed var(--line);}
.flow-step:last-child{border-right:0;}
.flow-step:hover{background:var(--bg-warm);}
.flow-step .step-no{font-size:13px;font-weight:700;color:var(--accent);letter-spacing:.1em;font-variant-numeric:tabular-nums;}
.flow-step h3{font-size:17px;margin:10px 0 8px;}
.flow-step p{font-size:14px;color:var(--muted);line-height:1.75;}

/* 图墙 */
.gallery-grid{display:grid;grid-template-columns:repeat(4,1fr);grid-auto-rows:196px;gap:18px;}
.gallery-item{position:relative;overflow:hidden;border-radius:var(--r-img);box-shadow:var(--shadow);background:#DDE6EC;}
.gallery-item.big{grid-column:span 2;grid-row:span 2;}
.gallery-item img{width:100%;height:100%;object-fit:cover;transition:transform .5s ease;}
.gallery-item:hover img{transform:scale(1.03);}
.gallery-caption{position:absolute;left:0;right:0;bottom:0;padding:34px 18px 14px;background:linear-gradient(to top,rgba(15,37,50,.82),rgba(15,37,50,0));color:#fff;font-size:14px;font-weight:600;}

/* CTA 表单 */
.cta-wrap{display:grid;grid-template-columns:1fr 1fr;gap:48px;align-items:start;}
.cta-copy h2{font-size:clamp(24px,3vw,32px);}
.cta-copy p{margin-top:16px;color:var(--muted);font-size:15.5px;line-height:1.85;}
.cta-list{margin-top:26px;display:flex;flex-direction:column;gap:14px;}
.cta-list li{display:flex;gap:12px;align-items:flex-start;font-size:15px;color:#3C4E5B;}
.cta-list .tick{flex-shrink:0;width:22px;height:22px;border-radius:50%;background:var(--green-soft);color:var(--green);display:inline-flex;align-items:center;justify-content:center;font-size:12px;font-weight:700;margin-top:3px;}
.form-card{background:#fff;border:1px solid var(--border);border-radius:var(--r-card);padding:30px;box-shadow:0 16px 40px rgba(18,42,60,.12);}
.form-card h3{font-size:20px;margin-bottom:6px;}
.form-card .form-sub{font-size:13.5px;color:var(--muted);margin-bottom:22px;}
.field{display:flex;flex-direction:column;gap:8px;margin-bottom:16px;}
.field label{font-size:14px;font-weight:600;}
.field .req{color:var(--accent);}
.input,.select,.textarea{width:100%;height:44px;padding:0 14px;border:1px solid var(--input-border);border-radius:10px;background:#fff;font-size:15px;transition:border-color .2s ease,box-shadow .2s ease;}
.textarea{height:auto;min-height:96px;padding:12px 14px;resize:vertical;line-height:1.7;}
.input:focus,.select:focus,.textarea:focus{outline:none;border-color:var(--primary);box-shadow:0 0 0 3px rgba(36,83,107,.12);}
.select{appearance:none;background-image:linear-gradient(45deg,transparent 50%,#5C6B78 50%),linear-gradient(135deg,#5C6B78 50%,transparent 50%);background-position:calc(100% - 20px) 20px,calc(100% - 14px) 20px;background-size:6px 6px,6px 6px;background-repeat:no-repeat;padding-right:40px;}
.form-hint{font-size:12.5px;color:var(--muted);margin-top:12px;line-height:1.6;}
.form-msg{margin-top:12px;font-size:14px;display:none;border-radius:8px;padding:10px 14px;}
.form-msg.is-error{display:block;color:#C0392B;background:rgba(192,57,43,.08);}
.form-msg.is-success{display:block;color:var(--green);background:var(--green-soft);}

/* FAQ */
.faq-list{background:#fff;border:1px solid var(--border);border-radius:var(--r-card);overflow:hidden;box-shadow:var(--shadow);}
.faq-item{border-bottom:1px solid var(--line);}
.faq-item:last-child{border-bottom:0;}
.faq-item summary{list-style:none;cursor:pointer;display:flex;align-items:center;justify-content:space-between;gap:18px;padding:22px 26px;font-size:16px;font-weight:600;line-height:1.55;transition:background-color .2s ease;}
.faq-item summary::-webkit-details-marker{display:none;}
.faq-item summary:hover{background:var(--bg);}
.faq-icon{flex-shrink:0;width:26px;height:26px;position:relative;border-radius:50%;background:var(--primary-soft);transition:transform .25s ease,background-color .25s ease;}
.faq-icon::before,.faq-icon::after{content:"";position:absolute;top:50%;left:50%;width:12px;height:2px;background:var(--primary);border-radius:2px;transform:translate(-50%,-50%);}
.faq-icon::after{transform:translate(-50%,-50%) rotate(90deg);transition:transform .25s ease;}
.faq-item[open] .faq-icon{transform:rotate(135deg);background:var(--accent-soft);}
.faq-item p{padding:0 26px 24px;color:var(--muted);font-size:15px;line-height:1.85;max-width:900px;}

/* 资讯 */
.news-head{display:flex;align-items:flex-end;justify-content:space-between;gap:20px;flex-wrap:wrap;margin-bottom:32px;}
.news-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:24px;}
.news-card{background:#fff;border:1px solid var(--border);border-radius:var(--r-card);overflow:hidden;box-shadow:var(--shadow);display:flex;flex-direction:column;transition:box-shadow .25s ease,transform .25s ease;}
.news-card:hover{box-shadow:var(--shadow-lg);transform:translateY(-2px);}
.news-thumb{display:block;overflow:hidden;background:#E4EBF0;}
.news-thumb img{width:100%;aspect-ratio:16/10;object-fit:cover;transition:transform .45s ease;}
.news-card:hover .news-thumb img{transform:scale(1.04);}
.news-body{padding:20px 22px 22px;display:flex;flex-direction:column;gap:10px;flex:1;}
.badge{align-self:flex-start;font-size:12.5px;font-weight:600;color:var(--primary);background:var(--primary-soft);border-radius:999px;padding:4px 12px;}
.news-title{font-size:17px;line-height:1.5;font-weight:700;}
.news-title a:hover{color:var(--primary);}
.news-excerpt{font-size:14px;color:var(--muted);line-height:1.75;display:-webkit-box;-webkit-line-clamp:2;-webkit-box-orient:vertical;overflow:hidden;}
.news-meta{margin-top:auto;display:flex;align-items:center;justify-content:space-between;gap:12px;padding-top:14px;border-top:1px solid var(--line);font-size:13px;color:#8795A1;}
.news-meta a{color:var(--primary);font-weight:600;}
.news-meta a:hover{text-decoration:underline;text-underline-offset:4px;}
.empty-state{border:1.5px dashed #D3DDE5;border-radius:var(--r-card);background:#fff;padding:56px 24px;text-align:center;color:var(--muted);}
.empty-state svg{color:#B7C5CF;margin:0 auto 14px;}
.empty-state p{font-size:15px;}
.news-more{display:flex;justify-content:center;margin-top:36px;}

/* 页脚 */
.site-footer{background:var(--footer);color:#C8D3DB;padding:64px 0 0;margin-top:0;}
.footer-grid{display:grid;grid-template-columns:1.5fr 1fr 1fr 1.2fr;gap:40px;}
.footer-brand{display:flex;align-items:center;gap:10px;margin-bottom:16px;}
.footer-brand-name{color:#fff;font-size:18px;font-weight:700;}
.footer-about{font-size:14px;line-height:1.85;color:#9FB3C0;max-width:320px;}
.footer-col h4{color:#fff;font-size:15px;margin-bottom:16px;font-weight:600;}
.footer-col li{margin-bottom:10px;}
.footer-col a{color:#C8D3DB;font-size:14px;}
.footer-col a:hover{color:#fff;}
.footer-contact li{font-size:14px;color:#C8D3DB;margin-bottom:12px;line-height:1.7;}
.footer-contact span{display:block;font-size:12.5px;color:#7E93A1;}
.footer-bottom{margin-top:52px;border-top:1px solid rgba(255,255,255,.1);padding:20px 0;display:flex;justify-content:space-between;gap:12px;flex-wrap:wrap;font-size:13px;color:#8398A6;}
.footer-bottom a{color:#A9BCC8;}
.footer-bottom a:hover{color:#fff;}

/* 响应式 */
@media (max-width:1024px){
  :root{--section:64px;}
  .nav-list,.header-tools .icon-btn,.header-tools .btn{display:none;}
  .nav-toggle{display:inline-flex;}
  .hero{padding:140px 0 64px;}
  .hero-grid{grid-template-columns:1fr;gap:40px;}
  .points-grid{grid-template-columns:1fr;}
  .point-stack{grid-template-rows:auto;grid-template-columns:1fr 1fr;}
  .flow{grid-template-columns:1fr 1fr;}
  .flow-step:nth-child(2){border-right:0;}
  .flow-step:nth-child(1),.flow-step:nth-child(2){border-bottom:1px dashed var(--line);}
  .gallery-grid{grid-template-columns:repeat(2,1fr);grid-auto-rows:180px;}
  .gallery-item.big{grid-column:span 2;grid-row:span 1;}
  .cta-wrap{grid-template-columns:1fr;gap:32px;}
  .news-grid{grid-template-columns:repeat(2,1fr);}
  .footer-grid{grid-template-columns:1fr 1fr;gap:32px;}
  .footer-about{max-width:none;}
}
@media (max-width:640px){
  :root{--section:48px;}
  .container{padding:0 18px;}
  .topbar-inner{gap:12px;font-size:13px;}
  .topbar-label span.full{display:none;}
  .cd-part.hide-sm{display:none;}
  .hero{padding:130px 0 52px;}
  .hero h1{font-size:30px;}
  .hero-sub{font-size:16px;}
  .hero-actions .btn{width:100%;}
  .hero-float{left:12px;bottom:12px;padding:10px 14px;}
  .point-stack{grid-template-columns:1fr;}
  .flow{grid-template-columns:1fr;}
  .flow-step{border-right:0;border-bottom:1px dashed var(--line);}
  .flow-step:last-child{border-bottom:0;}
  .gallery-grid{grid-template-columns:1fr;grid-auto-rows:210px;}
  .gallery-item.big{grid-column:span 1;}
  .news-grid{grid-template-columns:1fr;}
  .news-head{align-items:flex-start;}
  .form-card{padding:22px 18px;}
  .faq-item summary{padding:18px 18px;font-size:15px;min-height:48px;}
  .faq-item p{padding:0 18px 20px;}
  .footer-grid{grid-template-columns:1fr;gap:28px;}
  .footer-bottom{justify-content:flex-start;}
}

/* roulang page: article */
:root{
  --primary:#24536B;
  --primary-dark:#1B4157;
  --primary-soft:#EDF3F6;
  --accent:#C77D3A;
  --accent-soft:#FAF1E7;
  --mint:#2F8F83;
  --mint-soft:#EAF5F3;
  --bg:#F7F8FA;
  --card:#FFFFFF;
  --ink:#1B2A33;
  --ink-2:#2A3A44;
  --muted:#5C6B78;
  --line:#E2E8EE;
  --line-soft:#EEF2F5;
  --footer:#0F2532;
  --radius-card:16px;
  --radius-btn:10px;
  --radius-img:16px;
  --shadow-card:0 6px 20px rgba(18,42,60,.08);
  --shadow-hover:0 12px 28px rgba(18,42,60,.12);
  --shadow-deep:0 18px 40px rgba(15,37,50,.16);
  --space-section:80px;
}
*,*::before,*::after{box-sizing:border-box;}
html{-webkit-text-size-adjust:100%;}
body{
  margin:0;
  font-family:system-ui,-apple-system,"PingFang SC","Microsoft YaHei","Noto Sans SC",sans-serif;
  font-size:16px;
  line-height:1.75;
  color:var(--ink);
  background:var(--bg);
  -webkit-font-smoothing:antialiased;
}
img{max-width:100%;display:block;border-style:none;}
a{color:var(--primary);text-decoration:none;transition:color .2s ease,border-color .2s ease;}
a:hover{color:var(--primary-dark);}
button{font:inherit;color:inherit;background:none;border:0;cursor:pointer;}
ul,ol{margin:0;padding:0;list-style:none;}
h1,h2,h3,h4{margin:0;font-weight:700;letter-spacing:-.01em;color:var(--ink);line-height:1.3;}
p{margin:0;}
input,select,textarea{font:inherit;color:inherit;}
:focus-visible{outline:2px solid var(--primary);outline-offset:2px;border-radius:4px;}
.container{width:100%;max-width:1200px;margin:0 auto;padding:0 24px;}
.btn{
  display:inline-flex;align-items:center;justify-content:center;gap:8px;
  min-height:44px;padding:12px 22px;border-radius:var(--radius-btn);
  font-size:15px;font-weight:650;letter-spacing:.01em;
  border:1px solid transparent;cursor:pointer;white-space:nowrap;
  transition:background-color .2s ease,color .2s ease,border-color .2s ease,box-shadow .2s ease,transform .15s ease;
}
.btn-primary{background:var(--primary);color:#fff;box-shadow:0 8px 20px rgba(36,83,107,.22);}
.btn-primary:hover{background:var(--primary-dark);color:#fff;box-shadow:0 12px 26px rgba(36,83,107,.28);transform:translateY(-1px);}
.btn-primary:active{transform:translateY(1px);box-shadow:0 6px 14px rgba(36,83,107,.2);}
.btn-ghost{background:#fff;color:var(--primary);border-color:#CBD8E2;}
.btn-ghost:hover{background:var(--primary-soft);border-color:var(--primary);color:var(--primary-dark);}
.btn-ghost:active{transform:translateY(1px);}
.btn-line{background:transparent;border-color:rgba(255,255,255,.6);color:#fff;}
.btn-line:hover{background:rgba(255,255,255,.14);color:#fff;}
.badge{
  display:inline-flex;align-items:center;gap:6px;
  padding:4px 12px;border-radius:999px;
  font-size:13px;font-weight:600;letter-spacing:.02em;
  background:var(--primary-soft);color:var(--primary);
}
.badge-accent{background:var(--accent-soft);color:#9C5F26;}
.badge-mint{background:var(--mint-soft);color:#22766C;}

/* ---------- 顶部导航 ---------- */
.site-header{
  position:absolute;top:0;left:0;right:0;z-index:60;
  background:rgba(255,255,255,.68);
  -webkit-backdrop-filter:blur(16px) saturate(1.2);
  backdrop-filter:blur(16px) saturate(1.2);
  border-bottom:1px solid rgba(255,255,255,.55);
  box-shadow:0 8px 24px rgba(18,42,60,.08);
  transition:background-color .28s ease,box-shadow .28s ease,border-color .28s ease;
}
.site-header.is-stuck{
  position:fixed;
  background:rgba(255,255,255,.96);
  border-bottom-color:var(--line);
  box-shadow:0 4px 16px rgba(18,42,60,.07);
}
.header-wrap{display:flex;align-items:center;}
.header-inner{display:flex;align-items:center;justify-content:space-between;gap:24px;width:100%;min-height:72px;}
.brand{display:flex;align-items:center;gap:12px;flex-shrink:0;}
.brand-mark{width:40px;height:40px;flex-shrink:0;}
.brand-text{display:flex;flex-direction:column;line-height:1.2;}
.brand-name{font-size:19px;font-weight:750;color:var(--ink);letter-spacing:-.01em;}
.brand-sub{font-size:12px;color:var(--muted);letter-spacing:.04em;}
.nav-list{display:flex;align-items:center;gap:6px;}
.nav-link{
  position:relative;display:inline-flex;align-items:center;height:44px;
  padding:0 14px;border-radius:999px;font-size:15px;font-weight:550;color:var(--ink-2);
  transition:color .2s ease,background-color .2s ease;
}
.nav-link:hover{color:var(--primary);background:rgba(36,83,107,.07);}
.nav-link.is-active{color:var(--primary);font-weight:700;background:var(--primary-soft);}
.header-tools{display:flex;align-items:center;gap:12px;flex-shrink:0;}
.icon-btn{
  display:inline-flex;align-items:center;justify-content:center;
  width:44px;height:44px;border-radius:50%;color:var(--ink-2);
  border:1px solid transparent;transition:background-color .2s ease,color .2s ease,border-color .2s ease;
}
.icon-btn:hover{background:rgba(36,83,107,.08);color:var(--primary);border-color:#DBE4EB;}
.nav-toggle{
  display:none;position:relative;width:44px;height:44px;border-radius:12px;
  border:1px solid var(--line);background:#fff;
}
.nav-toggle span,
.nav-toggle span::before,
.nav-toggle span::after{
  position:absolute;left:50%;width:18px;height:2px;border-radius:2px;background:var(--ink);
  transform:translateX(-50%);transition:transform .25s ease,opacity .2s ease;
}
.nav-toggle span{top:50%;margin-top:-1px;}
.nav-toggle span::before{content:"";top:-6px;left:0;transform:none;}
.nav-toggle span::after{content:"";top:6px;left:0;transform:none;}
.nav-toggle.is-open span{background:transparent;}
.nav-toggle.is-open span::before{transform:translateY(6px) rotate(45deg);}
.nav-toggle.is-open span::after{transform:translateY(-6px) rotate(-45deg);}

/* ---------- 内页头图 ---------- */
.page-hero{
  position:relative;
  padding:150px 0 64px;
  background:
    linear-gradient(120deg,rgba(15,37,50,.86) 0%,rgba(36,83,107,.78) 58%,rgba(47,143,131,.62) 100%),
    url('/assets/images/backpic/back-1.png') center/cover no-repeat;
  color:#fff;
  overflow:hidden;
}
.page-hero::after{
  content:"";position:absolute;inset:0;
  background-image:radial-gradient(rgba(255,255,255,.14) 1px,transparent 1px);
  background-size:26px 26px;opacity:.5;pointer-events:none;
}
.page-hero .container{position:relative;z-index:2;}
.hero-tag{
  display:inline-flex;align-items:center;gap:8px;
  padding:6px 14px;border-radius:999px;font-size:13px;font-weight:600;
  background:rgba(255,255,255,.16);border:1px solid rgba(255,255,255,.28);color:#fff;
}
.page-hero h2{color:#fff;font-size:30px;margin:18px 0 10px;max-width:760px;}
.page-hero p{color:rgba(255,255,255,.8);font-size:15px;max-width:640px;}

/* ---------- 面包屑 ---------- */
.breadcrumb{
  display:flex;flex-wrap:wrap;align-items:center;gap:8px;
  font-size:13.5px;color:var(--muted);padding:22px 0 0;
}
.breadcrumb a{color:var(--muted);}
.breadcrumb a:hover{color:var(--primary);}
.breadcrumb span.sep{color:#B7C3CD;}
.breadcrumb .current{color:var(--ink);font-weight:600;}

/* ---------- 文章主体 ---------- */
.article-section{padding:8px 0 var(--space-section);}
.article-layout{display:grid;grid-template-columns:minmax(0,1fr);gap:32px;}
.article-card{
  background:var(--card);border:1px solid var(--line);border-radius:var(--radius-card);
  box-shadow:var(--shadow-card);padding:44px 48px;
}
.article-head{max-width:760px;margin:0 auto;}
.article-title{font-size:36px;line-height:1.28;margin:16px 0 18px;}
.article-meta{
  display:flex;flex-wrap:wrap;align-items:center;gap:16px;
  padding-bottom:22px;border-bottom:1px solid var(--line-soft);
  font-size:13.5px;color:var(--muted);
}
.article-meta .meta-item{display:inline-flex;align-items:center;gap:6px;}
.article-meta svg{opacity:.7;}
.article-body{max-width:760px;margin:32px auto 0;font-size:17px;line-height:1.8;color:var(--ink-2);}
.article-body>*+*{margin-top:1.15em;}
.article-body p{margin:0 0 1.2em;font-size:17px;line-height:1.8;}
.article-body h2{
  position:relative;font-size:25px;line-height:1.4;margin:44px 0 16px;padding-left:16px;
}
.article-body h2::before{
  content:"";position:absolute;left:0;top:.22em;bottom:.22em;width:4px;border-radius:3px;
  background:var(--primary);
}
.article-body h3{font-size:20px;margin:32px 0 12px;color:var(--ink);}
.article-body a{color:var(--primary);border-bottom:1px solid rgba(36,83,107,.28);}
.article-body a:hover{color:var(--primary-dark);border-bottom-color:var(--primary);}
.article-body strong{font-weight:700;color:var(--ink);}
.article-body ul,.article-body ol{margin:0 0 1.3em;padding-left:2px;}
.article-body ul li{position:relative;padding-left:20px;margin-bottom:9px;color:var(--ink-2);}
.article-body ul li::before{
  content:"";position:absolute;left:2px;top:.72em;width:7px;height:7px;border-radius:50%;
  background:var(--mint);opacity:.85;
}
.article-body ol{counter-reset:olc;padding-left:0;}
.article-body ol li{position:relative;padding-left:32px;margin-bottom:10px;counter-increment:olc;}
.article-body ol li::before{
  content:counter(olc);position:absolute;left:0;top:.28em;
  width:20px;height:20px;border-radius:6px;background:var(--primary-soft);color:var(--primary);
  font-size:12px;font-weight:700;line-height:20px;text-align:center;
}
.article-body blockquote{
  margin:26px 0;padding:18px 22px;
  background:var(--primary-soft);border-left:4px solid var(--primary);
  border-radius:0 12px 12px 0;color:var(--muted);font-size:16px;line-height:1.75;
}
.article-body blockquote p:last-child{margin-bottom:0;}
.article-body img{border-radius:var(--radius-img);box-shadow:var(--shadow-card);margin:26px auto;width:auto;}
.article-body figure{margin:26px 0;}
.article-body figcaption{font-size:13px;color:var(--muted);text-align:center;margin-top:10px;}
.article-body table{width:100%;border-collapse:collapse;margin:24px 0;font-size:15px;}
.article-body th,.article-body td{padding:12px 14px;text-align:left;border-bottom:1px solid var(--line);}
.article-body th{background:#F3F6F9;font-weight:650;color:var(--ink);}
.article-body hr{border:0;border-top:1px solid var(--line);margin:36px 0;}

/* ---------- 内容缺失 ---------- */
.empty-state{
  max-width:760px;margin:0 auto;padding:56px 24px;text-align:center;
  border:1px dashed #C9D6DF;border-radius:var(--radius-card);background:#FBFCFD;
}
.empty-icon{
  width:56px;height:56px;margin:0 auto 18px;border-radius:50%;
  display:flex;align-items:center;justify-content:center;
  background:var(--primary-soft);color:var(--primary);
}
.empty-state h3{font-size:20px;margin-bottom:10px;}
.empty-state p{color:var(--muted);font-size:15px;margin-bottom:22px;}

/* ---------- 咨询条 ---------- */
.cta-band{
  margin-top:44px;border-radius:var(--radius-card);
  background:linear-gradient(120deg,#12303F 0%,#24536B 70%,#2F8F83 130%);
  color:#fff;padding:36px 40px;
  display:flex;flex-wrap:wrap;align-items:center;justify-content:space-between;gap:24px;
  box-shadow:var(--shadow-deep);
}
.cta-band h3{color:#fff;font-size:23px;margin-bottom:8px;}
.cta-band p{color:rgba(255,255,255,.78);font-size:15px;max-width:600px;}
.cta-band .btn{flex-shrink:0;}

/* ---------- 相关推荐 ---------- */
.related{padding:0 0 var(--space-section);}
.section-head{display:flex;align-items:flex-end;justify-content:space-between;gap:20px;margin-bottom:28px;}
.section-head h2{font-size:27px;}
.section-head p{color:var(--muted);font-size:15px;margin-top:8px;}
.section-head .more{
  font-size:15px;font-weight:600;color:var(--primary);
  display:inline-flex;align-items:center;gap:6px;white-space:nowrap;
}
.section-head .more:hover{color:var(--primary-dark);}
.card-grid{display:grid;grid-template-columns:repeat(3,minmax(0,1fr));gap:24px;}
.card{
  display:flex;flex-direction:column;background:var(--card);
  border:1px solid var(--line);border-radius:var(--radius-card);
  overflow:hidden;box-shadow:var(--shadow-card);
  transition:transform .25s ease,box-shadow .25s ease,border-color .25s ease;
}
.card:hover{transform:translateY(-2px);box-shadow:var(--shadow-hover);border-color:#D3DDE5;}
.card-thumb{position:relative;aspect-ratio:16/10;overflow:hidden;background:#E9EFF3;}
.card-thumb img{width:100%;height:100%;object-fit:cover;transition:transform .4s ease;}
.card:hover .card-thumb img{transform:scale(1.05);}
.card-body{padding:20px 22px 24px;display:flex;flex-direction:column;flex:1;gap:12px;}
.card-body h3{font-size:18px;line-height:1.45;}
.card-body h3 a{color:var(--ink);}
.card-body h3 a:hover{color:var(--primary);}
.card-body p{font-size:14.5px;color:var(--muted);line-height:1.7;}
.card-foot{
  margin-top:auto;display:flex;align-items:center;justify-content:space-between;gap:12px;
  font-size:13px;color:var(--muted);padding-top:10px;border-top:1px solid var(--line-soft);
}
.card-foot .link{font-weight:600;color:var(--primary);}
.back-row{margin-top:34px;display:flex;justify-content:center;}

/* ---------- 页脚 ---------- */
.site-footer{background:var(--footer);color:#C8D3DB;padding:64px 0 26px;margin-top:20px;}
.footer-grid{display:grid;grid-template-columns:1.5fr 1fr 1fr 1.2fr;gap:40px;}
.footer-brand{display:flex;align-items:center;gap:12px;margin-bottom:16px;}
.footer-brand-name{font-size:19px;font-weight:700;color:#fff;letter-spacing:-.01em;}
.footer-about{font-size:14px;line-height:1.85;color:#9FB0BC;max-width:340px;}
.site-footer h4{font-size:15px;color:#fff;margin-bottom:16px;font-weight:650;}
.site-footer ul li{margin-bottom:10px;}
.site-footer ul li a{color:#C8D3DB;font-size:14.5px;}
.site-footer ul li a:hover{color:#fff;}
.footer-contact li{display:flex;gap:10px;font-size:14.5px;color:#C8D3DB;margin-bottom:12px;align-items:flex-start;}
.footer-contact li span{
  display:inline-block;min-width:64px;color:#7F93A1;font-size:13.5px;flex-shrink:0;
}
.footer-bottom{
  margin-top:44px;padding-top:22px;border-top:1px solid rgba(255,255,255,.1);
  display:flex;flex-wrap:wrap;justify-content:space-between;gap:12px;
  font-size:13.5px;color:#8A9CA8;
}
.footer-bottom a{color:#C8D3DB;}
.footer-bottom a:hover{color:#fff;}

/* ---------- 移动抽屉 ---------- */
.drawer-mask{
  position:fixed;inset:0;background:rgba(15,37,50,.45);opacity:0;visibility:hidden;
  transition:opacity .25s ease,visibility .25s ease;z-index:70;
}
.drawer-mask.is-open{opacity:1;visibility:visible;}

@media (max-width:1024px){
  :root{--space-section:64px;}
  .nav-list{
    position:fixed;top:0;right:0;bottom:0;width:82%;max-width:340px;z-index:80;
    flex-direction:column;align-items:stretch;gap:4px;
    background:#fff;padding:86px 22px 28px;
    box-shadow:-12px 0 32px rgba(15,37,50,.16);
    transform:translateX(102%);transition:transform .28s ease;
    overflow-y:auto;
  }
  .nav-list.is-open{transform:translateX(0);}
  .nav-link{height:48px;border-radius:12px;font-size:16px;padding:0 16px;}
  .nav-toggle{display:inline-flex;}
  .article-card{padding:32px 26px;}
  .article-title{font-size:30px;}
  .card-grid{grid-template-columns:repeat(2,minmax(0,1fr));}
  .footer-grid{grid-template-columns:repeat(2,minmax(0,1fr));gap:32px;}
}
@media (max-width:768px){
  .page-hero{padding:132px 0 52px;}
  .page-hero h2{font-size:24px;}
  .brand-sub{display:none;}
  .brand-name{font-size:17px;}
  .article-body,.article-body p{font-size:16px;}
  .article-body h2{font-size:22px;margin-top:34px;}
  .cta-band{padding:28px 24px;}
  .cta-band h3{font-size:20px;}
  .section-head{flex-direction:column;align-items:flex-start;}
  .card-grid{grid-template-columns:minmax(0,1fr);}
  .footer-grid{grid-template-columns:minmax(0,1fr);}
}
@media (max-width:520px){
  .container{padding:0 18px;}
  .article-card{padding:26px 18px;border-radius:14px;}
  .article-title{font-size:26px;}
  .card-body{padding:18px;}
  .header-tools .btn{padding:10px 14px;font-size:14px;}
  .breadcrumb{font-size:13px;}
}

/* roulang page: category1 */
:root{
  --primary:#24536B;
  --primary-dark:#1C4256;
  --primary-soft:#E8EFF3;
  --accent:#C77D3A;
  --accent-soft:#FBF2E9;
  --mint:#2F8F83;
  --mint-soft:#E7F3F1;
  --bg:#F7F8FA;
  --card:#FFFFFF;
  --ink:#1B2A33;
  --muted:#5C6B78;
  --border:#E2E8EE;
  --line:#EEF2F5;
  --footer:#0F2532;
  --danger:#C0392B;
  --radius-card:16px;
  --radius-btn:10px;
  --radius-img:18px;
  --radius-pill:999px;
  --shadow-sm:0 6px 20px rgba(18,42,60,.08);
  --shadow-md:0 12px 28px rgba(18,42,60,.12);
  --container:1200px;
  --gutter:24px;
  --header-h:72px;
}
*{box-sizing:border-box}
html{scroll-behavior:smooth;scroll-padding-top:110px}
body{
  margin:0;
  font-family:system-ui,-apple-system,"PingFang SC","Microsoft YaHei","Noto Sans SC",sans-serif;
  font-size:16px;
  line-height:1.75;
  color:var(--ink);
  background:var(--bg);
  -webkit-font-smoothing:antialiased;
  text-rendering:optimizeLegibility;
}
h1,h2,h3,h4{margin:0;font-weight:700;letter-spacing:-0.01em;line-height:1.3}
p{margin:0}
ul,ol{margin:0;padding:0;list-style:none}
a{color:var(--primary);text-decoration:none;transition:color .2s ease,background-color .2s ease,border-color .2s ease}
a:hover{color:var(--primary-dark)}
img{max-width:100%;display:block}
button{font:inherit;color:inherit;background:none;border:none;cursor:pointer}
input,select,textarea{font:inherit;color:inherit}
:focus-visible{outline:2px solid var(--primary);outline-offset:2px;border-radius:6px}
.container{max-width:var(--container);margin:0 auto;padding:0 var(--gutter);width:100%}
.section{padding:80px 0}
.section--tight{padding:56px 0}
.section--soft{background:#FFFFFF}
.section--warm{background:linear-gradient(180deg,#FBFCFD 0%,#F7F8FA 100%)}
.section-head{max-width:720px;margin-bottom:44px}
.section-head.center{margin-left:auto;margin-right:auto;text-align:center}
.eyebrow{
  display:inline-flex;align-items:center;gap:8px;
  font-size:13px;font-weight:650;letter-spacing:.08em;
  color:var(--mint);text-transform:uppercase;
  background:var(--mint-soft);border-radius:var(--radius-pill);
  padding:6px 14px;margin-bottom:16px;
}
.section-head h2{font-size:32px;margin-bottom:14px}
.section-head p{color:var(--muted);font-size:16.5px}
.text-muted{color:var(--muted)}
.center{text-align:center}
/* ---------- header ---------- */
.site-header{
  position:absolute;top:0;left:0;right:0;z-index:60;
  background:rgba(255,255,255,.68);
  backdrop-filter:blur(16px) saturate(1.2);
  -webkit-backdrop-filter:blur(16px) saturate(1.2);
  border-bottom:1px solid rgba(255,255,255,.55);
  box-shadow:0 8px 24px rgba(18,42,60,.08);
  transition:background-color .25s ease,box-shadow .25s ease,border-color .25s ease;
}
.site-header.is-scrolled{
  position:fixed;
  background:rgba(255,255,255,.96);
  border-bottom:1px solid var(--border);
  box-shadow:0 4px 16px rgba(18,42,60,.06);
}
.header-wrap{padding-top:14px;padding-bottom:14px}
.header-inner{display:flex;align-items:center;justify-content:space-between;gap:24px;min-height:44px}
.brand{display:flex;align-items:center;gap:12px;color:var(--ink)}
.brand:hover{color:var(--ink)}
.brand-mark{width:40px;height:40px;flex:none}
.brand-text{display:flex;flex-direction:column;line-height:1.25}
.brand-name{font-size:17px;font-weight:750;letter-spacing:-.01em}
.brand-sub{font-size:12px;color:var(--muted);letter-spacing:.02em}
.nav-list{display:flex;align-items:center;gap:6px}
.nav-link{
  display:inline-flex;align-items:center;
  min-height:44px;padding:0 14px;border-radius:var(--radius-pill);
  font-size:15px;font-weight:500;color:#31424E;white-space:nowrap;
  transition:background-color .2s ease,color .2s ease;
}
.nav-link:hover{background:rgba(36,83,107,.08);color:var(--primary)}
.nav-link.is-active{color:var(--primary);background:rgba(36,83,107,.10);font-weight:650}
.header-tools{display:flex;align-items:center;gap:12px}
.icon-btn{
  width:42px;height:42px;border-radius:var(--radius-pill);
  display:inline-flex;align-items:center;justify-content:center;
  color:var(--primary);border:1px solid var(--border);background:#fff;
  transition:background-color .2s ease,border-color .2s ease,color .2s ease;
}
.icon-btn:hover{background:var(--primary-soft);border-color:#CFDCE4}
.nav-toggle{
  display:none;width:44px;height:44px;border-radius:var(--radius-btn);
  border:1px solid var(--border);background:#fff;position:relative;
}
.nav-toggle span,
.nav-toggle span::before,
.nav-toggle span::after{
  position:absolute;left:50%;width:18px;height:2px;border-radius:2px;background:var(--primary);
  transform:translateX(-50%);transition:transform .25s ease,opacity .25s ease;
}
.nav-toggle span{top:50%;margin-top:-1px}
.nav-toggle span::before{content:"";top:-6px}
.nav-toggle span::after{content:"";top:6px}
body.nav-open .nav-toggle span{transform:translateX(-50%) rotate(45deg)}
body.nav-open .nav-toggle span::before{transform:rotate(-90deg);top:0}
body.nav-open .nav-toggle span::after{opacity:0;top:0}
/* ---------- buttons ---------- */
.btn{
  display:inline-flex;align-items:center;justify-content:center;gap:8px;
  min-height:46px;padding:12px 22px;border-radius:var(--radius-btn);
  font-size:15px;font-weight:650;white-space:nowrap;
  border:1px solid transparent;cursor:pointer;
  transition:background-color .2s ease,color .2s ease,border-color .2s ease,box-shadow .2s ease,transform .12s ease;
}
.btn-primary{background:var(--primary);color:#fff;box-shadow:0 6px 18px rgba(36,83,107,.22)}
.btn-primary:hover{background:var(--primary-dark);color:#fff;box-shadow:0 10px 24px rgba(36,83,107,.26)}
.btn-primary:active{transform:translateY(1px)}
.btn-outline{background:#fff;color:var(--primary);border-color:#C9D8E0}
.btn-outline:hover{background:var(--primary-soft);border-color:var(--primary);color:var(--primary-dark)}
.btn-ghost{background:rgba(255,255,255,.14);color:#fff;border-color:rgba(255,255,255,.55)}
.btn-ghost:hover{background:rgba(255,255,255,.24);color:#fff}
.btn-block{width:100%}
.btn[disabled]{opacity:.5;cursor:not-allowed;box-shadow:none}
.link-more{font-size:15px;font-weight:600;display:inline-flex;align-items:center;gap:6px}
.link-more:hover{text-decoration:underline;text-underline-offset:4px}
/* ---------- breadcrumb ---------- */
.breadcrumb{display:flex;flex-wrap:wrap;align-items:center;gap:8px;font-size:13.5px;color:rgba(255,255,255,.78);margin-bottom:18px}
.breadcrumb a{color:rgba(255,255,255,.88)}
.breadcrumb a:hover{color:#fff;text-decoration:underline;text-underline-offset:4px}
.breadcrumb .sep{opacity:.55}
/* ---------- hero ---------- */
.page-hero{
  position:relative;overflow:hidden;
  min-height:480px;display:flex;align-items:center;
  padding:132px 0 72px;
  background-image:linear-gradient(115deg,rgba(15,37,50,.92) 0%,rgba(23,56,74,.80) 48%,rgba(36,83,107,.55) 100%),url("/assets/images/backpic/back-1.png");
  background-size:cover;background-position:center;
  color:#fff;
}
.page-hero::after{
  content:"";position:absolute;inset:0;pointer-events:none;
  background:
    radial-gradient(600px 300px at 88% 12%,rgba(199,125,58,.24),transparent 70%),
    linear-gradient(0deg,rgba(15,37,50,.55),transparent 45%);
}
.page-hero .container{position:relative;z-index:2}
.hero-grid{display:grid;grid-template-columns:minmax(0,1.35fr) minmax(0,.95fr);gap:48px;align-items:center}
.hero-badge{
  display:inline-flex;align-items:center;gap:8px;
  padding:7px 14px;border-radius:var(--radius-pill);
  background:rgba(255,255,255,.14);border:1px solid rgba(255,255,255,.32);
  font-size:13px;font-weight:600;letter-spacing:.02em;color:#E7F3F1;
}
.page-hero h1{font-size:46px;line-height:1.2;margin:18px 0 18px;letter-spacing:-.02em}
.page-hero h1 em{font-style:normal;color:#F0C79A}
.hero-lead{font-size:17px;color:rgba(255,255,255,.88);max-width:620px}
.hero-actions{display:flex;flex-wrap:wrap;gap:14px;margin-top:30px}
.hero-trust{display:flex;flex-wrap:wrap;gap:26px;margin-top:34px;padding-top:24px;border-top:1px solid rgba(255,255,255,.18)}
.hero-trust li{font-size:14px;color:rgba(255,255,255,.86);display:flex;align-items:center;gap:8px}
.hero-trust li::before{content:"";width:7px;height:7px;border-radius:50%;background:var(--accent);flex:none}
.hero-card{
  background:rgba(255,255,255,.96);border-radius:var(--radius-card);
  padding:26px;color:var(--ink);box-shadow:0 20px 44px rgba(6,20,30,.28);
  border:1px solid rgba(255,255,255,.7);
}
.hero-card h3{font-size:18px;margin-bottom:6px}
.hero-card .hero-card-sub{font-size:13.5px;color:var(--muted);margin-bottom:18px}
.hero-facts{display:grid;gap:14px}
.hero-fact{display:flex;justify-content:space-between;gap:12px;padding-bottom:12px;border-bottom:1px solid var(--line);font-size:14.5px}
.hero-fact:last-child{border-bottom:none;padding-bottom:0}
.hero-fact strong{color:var(--primary);font-weight:700}
.hero-fact span{color:var(--muted)}
/* ---------- anchor bar ---------- */
.anchor-bar{
  position:sticky;top:var(--header-h);z-index:40;
  background:rgba(255,255,255,.94);
  backdrop-filter:blur(12px);-webkit-backdrop-filter:blur(12px);
  border-bottom:1px solid var(--border);
}
.anchor-inner{display:flex;align-items:center;gap:8px;overflow-x:auto;padding:10px 0;scrollbar-width:none}
.anchor-inner::-webkit-scrollbar{display:none}
.anchor-inner a{
  display:inline-flex;align-items:center;min-height:40px;padding:0 16px;
  border-radius:var(--radius-pill);font-size:14.5px;font-weight:600;color:#3A4C58;
  border:1px solid transparent;white-space:nowrap;
}
.anchor-inner a:hover{background:var(--primary-soft);color:var(--primary);border-color:#D6E2E9}
.anchor-inner .anchor-cta{margin-left:auto;color:var(--primary);border-color:#C9D8E0;background:#fff}
/* ---------- stat strip ---------- */
.stat-strip{
  display:grid;grid-template-columns:repeat(4,minmax(0,1fr));
  gap:0;background:#fff;border:1px solid var(--border);
  border-radius:var(--radius-card);box-shadow:var(--shadow-sm);overflow:hidden;
}
.stat-item{padding:26px 24px;border-right:1px solid var(--line)}
.stat-item:last-child{border-right:none}
.stat-value{font-size:30px;font-weight:750;color:var(--primary);font-variant-numeric:tabular-nums;letter-spacing:-.02em}
.stat-value small{font-size:15px;font-weight:600;margin-left:4px;color:var(--muted)}
.stat-label{font-size:14px;color:var(--muted);margin-top:6px}
/* ---------- overview split ---------- */
.split{display:grid;grid-template-columns:minmax(0,1.05fr) minmax(0,.95fr);gap:48px;align-items:start}
.lead-text{font-size:17px;color:#31424E}
.lead-text + .lead-text{margin-top:14px}
.mini-cards{display:grid;gap:16px}
.mini-card{
  background:#fff;border:1px solid var(--border);border-radius:var(--radius-card);
  padding:22px;box-shadow:var(--shadow-sm);transition:box-shadow .25s ease,transform .25s ease;
}
.mini-card:hover{box-shadow:var(--shadow-md);transform:translateY(-2px)}
.mini-card h3{font-size:18px;margin-bottom:8px;display:flex;align-items:center;gap:10px}
.mini-card p{font-size:14.5px;color:var(--muted)}
.dot-mark{width:10px;height:10px;border-radius:3px;background:var(--accent);flex:none}
.dot-mark--mint{background:var(--mint)}
/* ---------- feature rows ---------- */
.feature-row{display:grid;grid-template-columns:repeat(2,minmax(0,1fr));gap:56px;align-items:center;padding:44px 0}
.feature-row + .feature-row{border-top:1px solid var(--line)}
.feature-row.is-reverse .feature-media{order:2}
.feature-media{position:relative}
.feature-media img{
  width:100%;aspect-ratio:16/11;object-fit:cover;
  border-radius:var(--radius-img);box-shadow:var(--shadow-md);
}
.media-tag{
  position:absolute;left:18px;bottom:18px;
  background:rgba(255,255,255,.94);border-radius:var(--radius-pill);
  padding:8px 16px;font-size:13.5px;font-weight:650;color:var(--primary);
  box-shadow:0 6px 18px rgba(6,20,30,.14);
}
.feature-index{font-size:14px;font-weight:700;color:var(--accent);letter-spacing:.14em;font-variant-numeric:tabular-nums}
.feature-body h3{font-size:26px;margin:10px 0 14px}
.feature-body p{color:var(--muted);font-size:16px}
.check-list{margin-top:20px;display:grid;gap:12px}
.check-list li{display:flex;gap:12px;font-size:15.5px;color:#31424E}
.check-list li::before{
  content:"";flex:none;width:20px;height:20px;margin-top:3px;border-radius:6px;
  background:var(--mint-soft) url("data:image/svg+xml;charset=utf-8,%3Csvg xmlns='http://www.w3.org/2000/svg' viewBox='0 0 24 24' fill='none' stroke='%232F8F83' stroke-width='3' stroke-linecap='round' stroke-linejoin='round'%3E%3Cpath d='M20 6L9 17l-5-5'/%3E%3C/svg%3E") center/12px no-repeat;
}
.tag-row{display:flex;flex-wrap:wrap;gap:10px;margin-top:20px}
.tag{
  display:inline-flex;align-items:center;
  padding:7px 14px;border-radius:var(--radius-pill);
  background:var(--primary-soft);color:var(--primary);
  font-size:13.5px;font-weight:600;
}
.tag--accent{background:var(--accent-soft);color:#9C5F27}
.tag--mint{background:var(--mint-soft);color:#237166}
/* ---------- process ---------- */
.process-grid{display:grid;grid-template-columns:repeat(5,minmax(0,1fr));gap:18px}
.step{
  position:relative;background:#fff;border:1px solid var(--border);
  border-radius:var(--radius-card);padding:26px 20px 22px;
  box-shadow:var(--shadow-sm);transition:box-shadow .25s ease,transform .25s ease,border-color .25s ease;
}
.step:hover{box-shadow:var(--shadow-md);transform:translateY(-3px);border-color:#D3E0E8}
.step-num{
  font-size:13px;font-weight:750;letter-spacing:.12em;color:var(--accent);
  font-variant-numeric:tabular-nums;
}
.step h3{font-size:17px;margin:12px 0 8px}
.step p{font-size:14.5px;color:var(--muted)}
.step::after{
  content:"";position:absolute;top:34px;right:-11px;width:12px;height:2px;
  background:var(--border);
}
.step:last-child::after{display:none}
/* ---------- coverage ---------- */
.coverage{display:grid;grid-template-columns:minmax(0,.9fr) minmax(0,1.1fr);gap:44px;align-items:start}
.coverage-list{display:grid;gap:14px}
.coverage-item{
  display:flex;gap:16px;align-items:flex-start;
  background:#fff;border:1px solid var(--border);border-radius:14px;padding:18px 20px;
  box-shadow:var(--shadow-sm);
}
.coverage-item .c-index{
  flex:none;width:36px;height:36px;border-radius:10px;background:var(--primary-soft);
  color:var(--primary);font-weight:750;display:flex;align-items:center;justify-content:center;
  font-size:14px;font-variant-numeric:tabular-nums;
}
.coverage-item h4{font-size:16.5px;margin-bottom:4px}
.coverage-item p{font-size:14.5px;color:var(--muted)}
.coverage-aside{
  background:#fff;border:1px solid var(--border);border-radius:var(--radius-card);
  padding:28px;box-shadow:var(--shadow-sm);
}
.coverage-aside h3{font-size:20px;margin-bottom:12px}
.coverage-aside p{color:var(--muted);font-size:15px}
.aside-metrics{display:grid;gap:16px;margin-top:22px}
.aside-metric{display:flex;justify-content:space-between;align-items:baseline;border-bottom:1px dashed var(--border);padding-bottom:12px}
.aside-metric:last-child{border-bottom:none;padding-bottom:0}
.aside-metric strong{font-size:22px;color:var(--mint);font-variant-numeric:tabular-nums}
.aside-metric span{font-size:14px;color:var(--muted)}
/* ---------- faq ---------- */
.faq{max-width:900px;margin:0 auto;background:#fff;border:1px solid var(--border);border-radius:var(--radius-card);box-shadow:var(--shadow-sm);overflow:hidden}
.faq-item{border-bottom:1px solid var(--line)}
.faq-item:last-child{border-bottom:none}
.faq-q{
  width:100%;display:flex;align-items:center;justify-content:space-between;gap:20px;
  padding:20px 26px;text-align:left;font-size:16px;font-weight:650;color:var(--ink);
  min-height:56px;transition:background-color .2s ease;
}
.faq-q:hover{background:var(--bg)}
.faq-q .faq-icon{
  flex:none;width:26px;height:26px;border-radius:50%;border:1px solid #CFDCE4;
  display:flex;align-items:center;justify-content:center;color:var(--primary);
  transition:transform .3s ease,background-color .2s ease;
}
.faq-q .faq-icon::before{content:"";width:10px;height:10px;
  background:url("data:image/svg+xml;charset=utf-8,%3Csvg xmlns='http://www.w3.org/2000/svg' viewBox='0 0 24 24' fill='none' stroke='%2324536B' stroke-width='3' stroke-linecap='round'%3E%3Cpath d='M12 5v14M5 12h14'/%3E%3C/svg%3E") center/10px no-repeat;}
.faq-item.is-open .faq-icon{transform:rotate(135deg);background:var(--primary-soft)}
.faq-a{max-height:0;overflow:hidden;transition:max-height .35s ease}
.faq-a p{padding:0 26px 22px;font-size:15px;line-height:1.75;color:var(--muted)}
/* ---------- cta / form ---------- */
.cta-band{
  background:linear-gradient(120deg,#173846 0%,#24536B 58%,#2F6C7E 100%);
  color:#fff;border-radius:24px;padding:52px;overflow:hidden;position:relative;
  box-shadow:0 24px 50px rgba(15,37,50,.24);
}
.cta-band::before{
  content:"";position:absolute;right:-80px;top:-90px;width:340px;height:340px;border-radius:50%;
  background:radial-gradient(circle,rgba(199,125,58,.34),transparent 68%);
}
.cta-grid{position:relative;display:grid;grid-template-columns:minmax(0,1fr) minmax(0,.92fr);gap:48px;align-items:start}
.cta-copy h2{font-size:32px;margin-bottom:16px}
.cta-copy p{color:rgba(255,255,255,.86);font-size:16px;max-width:520px}
.cta-points{margin-top:24px;display:grid;gap:12px}
.cta-points li{display:flex;gap:10px;font-size:15px;color:rgba(255,255,255,.9)}
.cta-points li::before{content:"";flex:none;width:8px;height:8px;margin-top:8px;border-radius:50%;background:var(--accent)}
.cta-note{margin-top:22px;font-size:13.5px;color:rgba(255,255,255,.7)}
.form-card{
  background:#fff;border-radius:var(--radius-card);padding:28px;color:var(--ink);
  box-shadow:0 24px 46px rgba(6,20,30,.26);
}
.form-card h3{font-size:20px;margin-bottom:6px}
.form-card .form-sub{font-size:13.5px;color:var(--muted);margin-bottom:20px}
.field{margin-bottom:16px}
.field label{display:block;font-size:14px;font-weight:600;margin-bottom:8px}
.field label .req{color:var(--accent);margin-left:4px}
.field input,.field select,.field textarea{
  width:100%;min-height:46px;padding:11px 14px;
  border:1px solid #D8E0E8;border-radius:var(--radius-btn);
  background:#FCFDFE;font-size:15px;color:var(--ink);
  transition:border-color .2s ease,box-shadow .2s ease,background-color .2s ease;
}
.field textarea{min-height:96px;resize:vertical;line-height:1.7}
.field select{appearance:none;
  background-image:url("data:image/svg+xml;charset=utf-8,%3Csvg xmlns='http://www.w3.org/2000/svg' viewBox='0 0 24 24' fill='none' stroke='%235C6B78' stroke-width='2.4' stroke-linecap='round'%3E%3Cpath d='M6 9l6 6 6-6'/%3E%3C/svg%3E");
  background-repeat:no-repeat;background-position:right 14px center;background-size:16px;padding-right:40px;
}
.field input:focus,.field select:focus,.field textarea:focus{
  outline:none;border-color:var(--primary);background:#fff;
  box-shadow:0 0 0 3px rgba(36,83,107,.12);
}
.field.has-error input,.field.has-error select,.field.has-error textarea{border-color:var(--danger);background:#FDF6F5}
.field .err{display:none;margin-top:6px;font-size:13px;color:var(--danger)}
.field.has-error .err{display:block}
.form-msg{margin-top:14px;font-size:14px;font-weight:600;display:none}
.form-msg.is-error{display:block;color:var(--danger)}
.form-msg.is-success{display:block;color:var(--mint)}
.form-privacy{margin-top:14px;font-size:12.5px;color:var(--muted);line-height:1.6}
/* ---------- footer ---------- */
.site-footer{background:var(--footer);color:#C8D3DB;padding:64px 0 26px;margin-top:0}
.footer-grid{display:grid;grid-template-columns:1.5fr 1fr 1fr 1.2fr;gap:40px}
.footer-brand{display:flex;align-items:center;gap:12px;margin-bottom:16px}
.footer-brand-name{font-size:18px;font-weight:750;color:#fff}
.footer-about{font-size:14.5px;line-height:1.75;color:#A9B8C2;max-width:360px}
.site-footer h4{font-size:15px;color:#fff;margin-bottom:16px;font-weight:650}
.site-footer ul{display:grid;gap:10px}
.site-footer li{font-size:14.5px;color:#A9B8C2}
.site-footer li a{color:#C8D3DB}
.site-footer li a:hover{color:#fff}
.footer-contact li{display:flex;gap:10px;align-items:baseline}
.footer-contact li span{color:#7E93A0;min-width:64px;font-size:13.5px}
.footer-bottom{
  margin-top:44px;padding-top:22px;border-top:1px solid rgba(255,255,255,.12);
  display:flex;flex-wrap:wrap;gap:12px;justify-content:space-between;
  font-size:13.5px;color:#8FA2AE;
}
.footer-bottom a{color:#8FA2AE}
.footer-bottom a:hover{color:#fff}
/* ---------- responsive ---------- */
@media (max-width:1180px){
  .nav-link{padding:0 11px;font-size:14.5px}
  .process-grid{grid-template-columns:repeat(3,minmax(0,1fr))}
  .step::after{display:none}
}
@media (max-width:1024px){
  .nav-list{
    position:fixed;top:0;right:0;bottom:0;width:82%;max-width:360px;
    background:#fff;flex-direction:column;align-items:stretch;gap:4px;
    padding:88px 22px 28px;transform:translateX(102%);
    transition:transform .3s ease;box-shadow:-16px 0 40px rgba(6,20,30,.18);
    z-index:70;overflow-y:auto;
  }
  body.nav-open .nav-list{transform:translateX(0)}
  .nav-link{padding:14px 16px;border-radius:12px;font-size:16px;min-height:50px}
  .nav-toggle{display:inline-flex;z-index:80}
  .header-tools .btn-primary{display:none}
  body.nav-open{overflow:hidden}
  .hero-grid{grid-template-columns:1fr;gap:32px}
  .page-hero h1{font-size:38px}
  .split,.coverage,.cta-grid{grid-template-columns:1fr;gap:32px}
  .feature-row{grid-template-columns:1fr;gap:28px;padding:34px 0}
  .feature-row.is-reverse .feature-media{order:0}
  .stat-strip{grid-template-columns:repeat(2,minmax(0,1fr))}
  .stat-item:nth-child(2){border-right:none}
  .stat-item:nth-child(1),.stat-item:nth-child(2){border-bottom:1px solid var(--line)}
  .footer-grid{grid-template-columns:1fr 1fr;gap:32px}
  .section{padding:64px 0}
  .cta-band{padding:38px}
}
@media (max-width:768px){
  .page-hero{padding:112px 0 56px;min-height:auto}
  .page-hero h1{font-size:32px}
  .hero-lead{font-size:16px}
  .hero-trust{gap:16px;flex-direction:column;align-items:flex-start}
  .process-grid{grid-template-columns:1fr 1fr}
  .section-head h2{font-size:26px}
  .cta-copy h2{font-size:26px}
  .anchor-bar{top:64px}
}
@media (max-width:640px){
  :root{--gutter:18px;--header-h:64px}
  .brand-sub{display:none}
  .section{padding:48px 0}
  .page-hero h1{font-size:28px}
  .hero-actions .btn{width:100%}
  .stat-strip{grid-template-columns:1fr}
  .stat-item{border-right:none;border-bottom:1px solid var(--line)}
  .stat-item:last-child{border-bottom:none}
  .process-grid{grid-template-columns:1fr}
  .footer-grid{grid-template-columns:1fr}
  .cta-band{padding:26px 20px;border-radius:18px}
  .form-card{padding:22px}
  .faq-q{padding:18px 18px;font-size:15.5px}
  .faq-a p{padding:0 18px 18px}
  .feature-body h3{font-size:22px}
}

/* roulang page: category2 */
:root{
  --brand:#24536B;
  --brand-dark:#1B4054;
  --brand-soft:rgba(36,83,107,.08);
  --accent:#C77D3A;
  --teal:#2F8F83;
  --bg:#F7F8FA;
  --card:#FFFFFF;
  --text:#1B2A33;
  --muted:#5C6B78;
  --line:#E2E8EE;
  --line-soft:#EEF2F5;
  --ink:#0F2532;
  --radius:16px;
  --radius-sm:10px;
  --shadow:0 6px 20px rgba(18,42,60,.08);
  --shadow-lg:0 12px 28px rgba(18,42,60,.12);
  --container:1200px;
}
*,*::before,*::after{box-sizing:border-box}
html{-webkit-text-size-adjust:100%}
body{
  margin:0;
  font-family:system-ui,-apple-system,"PingFang SC","Microsoft YaHei","Noto Sans SC",sans-serif;
  font-size:16px;
  line-height:1.75;
  color:var(--text);
  background:var(--bg);
  -webkit-font-smoothing:antialiased;
}
img{max-width:100%;display:block;height:auto}
a{color:inherit;text-decoration:none;transition:color .2s ease}
button{font:inherit;color:inherit;background:none;border:0;cursor:pointer}
ul,ol{margin:0;padding:0;list-style:none}
h1,h2,h3,h4{margin:0;font-weight:680;letter-spacing:-.01em;line-height:1.3;color:var(--text)}
p{margin:0}
: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}
.skip-link{position:absolute;left:-9999px;top:0;background:var(--brand);color:#fff;padding:10px 16px;border-radius:0 0 10px 0;z-index:300}
.skip-link:focus{left:0}

/* ---------- 按钮 ---------- */
.btn{
  display:inline-flex;align-items:center;justify-content:center;gap:8px;
  min-height:44px;padding:12px 22px;border-radius:10px;
  font-size:15px;font-weight:640;line-height:1;
  transition:background .22s ease,color .22s ease,box-shadow .22s ease,transform .18s ease,border-color .22s ease;
  white-space:nowrap;
}
.btn-primary{background:var(--brand);color:#fff;box-shadow:0 6px 16px rgba(36,83,107,.22)}
.btn-primary:hover{background:var(--brand-dark);box-shadow:0 10px 24px rgba(36,83,107,.28);transform:translateY(-1px)}
.btn-primary:active{transform:translateY(1px)}
.btn-ghost{background:#fff;color:var(--brand);border:1px solid var(--brand)}
.btn-ghost:hover{background:var(--brand-soft);border-color:var(--brand-dark);color:var(--brand-dark)}
.btn-light{background:rgba(255,255,255,.14);color:#fff;border:1px solid rgba(255,255,255,.4)}
.btn-light:hover{background:rgba(255,255,255,.24)}
.btn[disabled],.btn.is-disabled{opacity:.5;pointer-events:none}
.text-link{color:var(--brand);font-weight:620;border-bottom:1px solid transparent}
.text-link:hover{color:var(--brand-dark);border-bottom-color:var(--brand-dark)}

/* ---------- 导航 ---------- */
.site-header{
  position:fixed;top:0;left:0;right:0;z-index:120;
  background:rgba(255,255,255,.68);
  -webkit-backdrop-filter:blur(16px) saturate(1.2);
  backdrop-filter:blur(16px) saturate(1.2);
  border-bottom:1px solid rgba(255,255,255,.55);
  box-shadow:0 8px 24px rgba(18,42,60,.08);
  transition:background .25s ease,box-shadow .25s ease,border-color .25s ease;
}
.site-header.is-scrolled{
  background:rgba(255,255,255,.96);
  border-bottom-color:var(--line);
  box-shadow:0 4px 14px rgba(18,42,60,.07);
}
.header-wrap{padding-top:0;padding-bottom:0}
.header-inner{display:flex;align-items:center;gap:28px;min-height:74px}
.brand{display:flex;align-items:center;gap:12px;flex-shrink:0}
.brand-mark{width:38px;height:38px;flex-shrink:0}
.brand-text{display:flex;flex-direction:column;line-height:1.2}
.brand-name{font-size:17px;font-weight:720;letter-spacing:-.02em;color:var(--text)}
.brand-sub{font-size:11px;color:var(--muted);letter-spacing:.04em}
.nav-list{display:flex;align-items:center;gap:6px;margin-left:auto}
.nav-link{
  position:relative;display:inline-flex;align-items:center;min-height:44px;
  padding:6px 14px;border-radius:999px;font-size:15px;font-weight:560;color:var(--text);
  transition:background .2s ease,color .2s ease;
}
.nav-link:hover{background:var(--brand-soft);color:var(--brand)}
.nav-link.is-active{color:var(--brand);background:var(--brand-soft);font-weight:660}
.nav-link.is-active::after{
  content:"";position:absolute;left:50%;bottom:4px;transform:translateX(-50%);
  width:18px;height:2px;border-radius:2px;background:var(--accent);
}
.header-tools{display:flex;align-items:center;gap:10px;flex-shrink:0}
.icon-btn{
  display:inline-flex;align-items:center;justify-content:center;
  width:44px;height:44px;border-radius:999px;color:var(--brand);
  border:1px solid var(--line);background:rgba(255,255,255,.7);
  transition:background .2s ease,color .2s ease,border-color .2s ease;
}
.icon-btn:hover{background:var(--brand);color:#fff;border-color:var(--brand)}
.nav-toggle{
  display:none;width:44px;height:44px;border-radius:10px;border:1px solid var(--line);
  background:rgba(255,255,255,.8);position:relative;
}
.nav-toggle span,.nav-toggle::before,.nav-toggle::after{
  content:"";position:absolute;left:50%;width:18px;height:2px;border-radius:2px;background:var(--brand);
  transform:translateX(-50%);transition:transform .22s ease,opacity .22s ease;
}
.nav-toggle::before{top:15px}
.nav-toggle span{top:21px}
.nav-toggle::after{top:27px}
body.nav-open .nav-toggle::before{transform:translateX(-50%) translateY(6px) rotate(45deg)}
body.nav-open .nav-toggle span{opacity:0}
body.nav-open .nav-toggle::after{transform:translateX(-50%) translateY(-6px) rotate(-45deg)}
.nav-mask{
  position:fixed;inset:0;background:rgba(15,37,50,.42);z-index:110;
  opacity:0;visibility:hidden;transition:opacity .25s ease,visibility .25s ease;
}
body.nav-open .nav-mask{opacity:1;visibility:visible}

/* ---------- 面包屑 ---------- */
.breadcrumb{padding:16px 0 0}
.breadcrumb ol{display:flex;flex-wrap:wrap;align-items:center;gap:8px;font-size:13.5px;color:var(--muted)}
.breadcrumb li{display:flex;align-items:center;gap:8px}
.breadcrumb li+li::before{content:"/";color:#B6C3CD}
.breadcrumb a:hover{color:var(--brand)}
.breadcrumb .current{color:var(--text);font-weight:560}

/* ---------- Hero ---------- */
.hero{
  position:relative;overflow:hidden;
  padding:150px 0 72px;
  background:
    linear-gradient(180deg,rgba(247,248,250,.92),rgba(247,248,250,.98)),
    url("/assets/images/backpic/back-2.webp") center/cover no-repeat;
}
.hero::after{
  content:"";position:absolute;inset:0;pointer-events:none;
  background-image:linear-gradient(rgba(36,83,107,.05) 1px,transparent 1px),linear-gradient(90deg,rgba(36,83,107,.05) 1px,transparent 1px);
  background-size:64px 64px;
  mask-image:linear-gradient(180deg,rgba(0,0,0,.55),transparent 78%);
  -webkit-mask-image:linear-gradient(180deg,rgba(0,0,0,.55),transparent 78%);
}
.hero .container{position:relative;z-index:1}
.hero-inner{max-width:860px}
.badge{
  display:inline-flex;align-items:center;gap:8px;
  padding:6px 14px;border-radius:999px;
  background:rgba(47,143,131,.12);color:var(--teal);
  font-size:13px;font-weight:640;letter-spacing:.02em;
}
.badge-warm{background:rgba(199,125,58,.14);color:#A9652A}
.hero h1{margin-top:20px;font-size:46px;font-weight:740;letter-spacing:-.02em}
.hero h1 em{font-style:normal;color:var(--brand)}
.hero-sub{margin-top:18px;font-size:17px;line-height:1.8;color:var(--muted);max-width:720px}
.hero-actions{display:flex;flex-wrap:wrap;gap:14px;margin-top:30px}
.hero-points{display:flex;flex-wrap:wrap;gap:12px 28px;margin-top:34px}
.hero-points li{display:flex;align-items:center;gap:9px;font-size:14.5px;color:var(--muted)}
.hero-points li::before{
  content:"";width:8px;height:8px;border-radius:50%;background:var(--teal);flex-shrink:0;
}

/* ---------- 指标卡 ---------- */
.section{padding:80px 0}
.section-alt{background:#fff}
.section-head{max-width:760px;margin-bottom:44px}
.section-head h2{font-size:32px;font-weight:700}
.section-head p{margin-top:14px;color:var(--muted);font-size:16px;line-height:1.8}
.eyebrow{
  display:inline-block;margin-bottom:14px;font-size:13px;font-weight:680;
  letter-spacing:.08em;color:var(--accent);text-transform:uppercase;
}
.stats{
  display:grid;grid-template-columns:repeat(4,1fr);gap:20px;
  margin-top:-46px;position:relative;z-index:2;
}
.stat{
  background:var(--card);border:1px solid var(--line);border-radius:var(--radius);
  padding:26px 24px;box-shadow:var(--shadow);transition:box-shadow .25s ease,transform .25s ease;
}
.stat:hover{box-shadow:var(--shadow-lg);transform:translateY(-2px)}
.stat-num{
  font-size:34px;font-weight:720;color:var(--brand);letter-spacing:-.02em;
  font-variant-numeric:tabular-nums;line-height:1.1;
}
.stat-num small{font-size:16px;font-weight:640;margin-left:4px;color:var(--muted)}
.stat-label{margin-top:10px;font-size:14px;color:var(--muted)}
.stat-tag{
  display:inline-block;margin-top:12px;padding:3px 10px;border-radius:999px;
  background:rgba(199,125,58,.12);color:#A9652A;font-size:12px;font-weight:640;
}

/* ---------- 网络示意 ---------- */
.network{display:grid;grid-template-columns:1.05fr .95fr;gap:44px;align-items:center}
.network-figure{
  border-radius:20px;overflow:hidden;border:1px solid var(--line);
  box-shadow:var(--shadow-lg);background:#fff;position:relative;
}
.network-figure img{width:100%;aspect-ratio:4/3;object-fit:cover}
.network-figure figcaption{
  position:absolute;left:16px;bottom:16px;right:16px;
  background:rgba(15,37,50,.72);color:#fff;border-radius:12px;
  padding:10px 14px;font-size:13px;-webkit-backdrop-filter:blur(6px);backdrop-filter:blur(6px);
}
.corridor-list{display:flex;flex-direction:column;gap:16px}
.corridor{
  display:flex;gap:16px;padding:20px;border-radius:var(--radius);
  background:var(--card);border:1px solid var(--line);box-shadow:var(--shadow);
  transition:transform .22s ease,box-shadow .22s ease;
}
.corridor:hover{transform:translateY(-2px);box-shadow:var(--shadow-lg)}
.corridor-index{
  flex-shrink:0;width:42px;height:42px;border-radius:12px;display:flex;align-items:center;justify-content:center;
  background:var(--brand-soft);color:var(--brand);font-weight:700;font-size:15px;font-variant-numeric:tabular-nums;
}
.corridor h3{font-size:18px;font-weight:660}
.corridor p{margin-top:6px;font-size:14.5px;color:var(--muted);line-height:1.7}
.corridor-meta{margin-top:10px;display:flex;flex-wrap:wrap;gap:8px}
.chip{
  display:inline-flex;align-items:center;padding:4px 11px;border-radius:999px;
  background:#F2F6F9;color:var(--brand);font-size:12.5px;font-weight:600;
}
.chip-teal{background:rgba(47,143,131,.12);color:#25766C}
.chip-warm{background:rgba(199,125,58,.14);color:#A9652A}

/* ---------- 表格 ---------- */
.table-wrap{
  overflow-x:auto;background:#fff;border:1px solid var(--line);
  border-radius:var(--radius);box-shadow:var(--shadow);
}
table{width:100%;border-collapse:collapse;min-width:840px}
caption{
  caption-side:top;text-align:left;padding:18px 20px 6px;font-size:14px;color:var(--muted);
}
th{
  background:#F2F6F9;color:var(--brand);font-size:13.5px;font-weight:680;
  text-align:left;padding:16px 20px;white-space:nowrap;letter-spacing:.01em;
}
td{padding:18px 20px;border-top:1px solid var(--line-soft);font-size:14.5px;color:var(--muted);vertical-align:top}
td strong{display:block;color:var(--text);font-weight:650;font-size:15px}
td .chip{margin-top:2px}
.table-note{margin-top:14px;font-size:13.5px;color:var(--muted)}

/* ---------- 步骤 ---------- */
.steps{display:grid;grid-template-columns:repeat(3,1fr);gap:20px}
.step{
  position:relative;background:#fff;border:1px solid var(--line);border-radius:var(--radius);
  padding:26px 24px 24px;box-shadow:var(--shadow);overflow:hidden;
  transition:transform .22s ease,box-shadow .22s ease;
}
.step:hover{transform:translateY(-2px);box-shadow:var(--shadow-lg)}
.step::before{
  content:"";position:absolute;left:0;top:0;bottom:0;width:4px;
  background:linear-gradient(180deg,var(--brand),var(--teal));
}
.step-num{
  font-size:13px;font-weight:700;letter-spacing:.1em;color:var(--accent);
  font-variant-numeric:tabular-nums;
}
.step h3{margin-top:10px;font-size:18px;font-weight:660}
.step p{margin-top:8px;font-size:14.5px;color:var(--muted);line-height:1.72}

/* ---------- 场景 ---------- */
.scene-grid{display:grid;grid-template-columns:1.08fr .92fr;gap:24px}
.scene-card{
  position:relative;border-radius:var(--radius);overflow:hidden;
  border:1px solid var(--line);background:#fff;box-shadow:var(--shadow);
  display:flex;flex-direction:column;
}
.scene-card img{width:100%;object-fit:cover;transition:transform .35s ease}
.scene-card:hover img{transform:scale(1.03)}
.scene-card-lg img{aspect-ratio:16/10}
.scene-card-sm img{aspect-ratio:16/9}
.scene-body{padding:20px 22px 22px;display:flex;flex-direction:column;gap:8px}
.scene-body h3{font-size:19px;font-weight:660}
.scene-body p{font-size:14.5px;color:var(--muted);line-height:1.72}
.scene-side{display:flex;flex-direction:column;gap:24px}
.scene-tags{display:flex;flex-wrap:wrap;gap:10px;margin-top:16px}
.scene-tags span{
  padding:7px 14px;border-radius:999px;border:1px solid var(--line);
  background:#fff;font-size:13.5px;color:var(--muted);font-weight:560;
}
.scene-tags span:hover{border-color:var(--brand);color:var(--brand)}

/* ---------- FAQ ---------- */
.faq{background:#fff;border:1px solid var(--line);border-radius:var(--radius);overflow:hidden;box-shadow:var(--shadow)}
.faq details{border-bottom:1px solid var(--line-soft)}
.faq details:last-child{border-bottom:0}
.faq summary{
  list-style:none;cursor:pointer;display:flex;align-items:center;justify-content:space-between;gap:18px;
  min-height:48px;padding:20px 24px;font-size:16px;font-weight:650;color:var(--text);
  transition:background .2s ease;
}
.faq summary::-webkit-details-marker{display:none}
.faq summary:hover{background:var(--bg)}
.faq .chev{
  flex-shrink:0;width:26px;height:26px;border-radius:50%;
  display:flex;align-items:center;justify-content:center;
  background:var(--brand-soft);color:var(--brand);font-size:16px;line-height:1;
  transition:transform .25s ease;
}
.faq details[open] .chev{transform:rotate(180deg)}
.faq .answer{padding:0 24px 22px;font-size:15px;line-height:1.82;color:var(--muted);max-width:920px}

/* ---------- CTA ---------- */
.cta-band{background:var(--ink);color:#fff;border-radius:22px;padding:56px 48px;position:relative;overflow:hidden}
.cta-band::after{
  content:"";position:absolute;right:-80px;top:-80px;width:320px;height:320px;border-radius:50%;
  background:radial-gradient(circle at center,rgba(47,143,131,.32),transparent 68%);
}
.cta-grid{position:relative;z-index:1;display:grid;grid-template-columns:1.15fr .85fr;gap:44px;align-items:center}
.cta-band h2{font-size:31px;color:#fff}
.cta-band p{margin-top:14px;font-size:15.5px;line-height:1.8;color:#C8D3DB;max-width:560px}
.cta-actions{display:flex;flex-wrap:wrap;gap:14px;margin-top:28px}
.cta-card{
  background:rgba(255,255,255,.07);border:1px solid rgba(255,255,255,.16);
  border-radius:var(--radius);padding:26px 24px;
}
.cta-card h3{font-size:16px;color:#fff;font-weight:650}
.cta-list{margin-top:16px;display:flex;flex-direction:column;gap:14px}
.cta-list li{display:flex;gap:12px;font-size:14.5px;color:#C8D3DB;line-height:1.6}
.cta-list li span{
  flex-shrink:0;width:8px;height:8px;border-radius:50%;background:var(--accent);margin-top:9px;
}
.cta-note{margin-top:18px;font-size:13px;color:#93A6B1}

/* ---------- 页脚 ---------- */
.site-footer{background:var(--ink);color:#C8D3DB;padding:64px 0 28px;margin-top:0}
.footer-grid{display:grid;grid-template-columns:1.5fr 1fr 1fr 1.2fr;gap:40px}
.footer-brand{display:flex;align-items:center;gap:12px}
.footer-brand-name{font-size:17px;font-weight:700;color:#fff;letter-spacing:-.01em}
.footer-about{margin-top:16px;font-size:14px;line-height:1.8;color:#9FB0BA;max-width:340px}
.site-footer h4{font-size:15px;color:#fff;font-weight:660;margin-bottom:16px}
.site-footer ul{display:flex;flex-direction:column;gap:11px}
.site-footer ul a{font-size:14px;color:#C8D3DB}
.site-footer ul a:hover{color:#fff}
.footer-contact li{font-size:14px;color:#C8D3DB;display:flex;gap:10px;align-items:baseline}
.footer-contact li span{color:#8A9BA6;flex-shrink:0}
.footer-bottom{
  margin-top:48px;padding-top:22px;border-top:1px solid rgba(255,255,255,.12);
  display:flex;flex-wrap:wrap;gap:12px;justify-content:space-between;font-size:13px;color:#8A9BA6;
}
.footer-bottom a{color:#8A9BA6}
.footer-bottom a:hover{color:#fff}

/* ---------- 响应式 ---------- */
@media (max-width:1024px){
  .header-inner{gap:16px}
  .nav-list{
    position:fixed;top:0;right:0;bottom:0;width:82%;max-width:360px;
    background:#fff;flex-direction:column;align-items:stretch;gap:4px;
    padding:96px 22px 28px;z-index:130;overflow-y:auto;
    box-shadow:-12px 0 32px rgba(18,42,60,.16);
    transform:translateX(100%);transition:transform .28s ease;margin-left:0;
  }
  body.nav-open .nav-list{transform:translateX(0)}
  .nav-link{justify-content:flex-start;padding:14px 16px;border-radius:12px;font-size:16px}
  .nav-link.is-active::after{left:16px;transform:none;bottom:8px}
  .header-tools .btn-primary{display:none}
  .nav-toggle{display:inline-flex}
  .hero{padding:132px 0 60px}
  .hero h1{font-size:36px}
  .stats{grid-template-columns:repeat(2,1fr);margin-top:-36px}
  .network{grid-template-columns:1fr;gap:32px}
  .steps{grid-template-columns:repeat(2,1fr)}
  .scene-grid{grid-template-columns:1fr}
  .cta-grid{grid-template-columns:1fr;gap:32px}
  .cta-band{padding:44px 32px}
  .footer-grid{grid-template-columns:1fr 1fr;gap:36px}
  .section{padding:64px 0}
  .section-head h2{font-size:28px}
}
@media (max-width:640px){
  .container{padding:0 18px}
  .hero{padding:120px 0 48px}
  .hero h1{font-size:31px}
  .hero-sub{font-size:15.5px}
  .hero h1 em{display:inline}
  .hero-actions .btn{width:100%}
  .stats{grid-template-columns:1fr;margin-top:-28px}
  .section{padding:48px 0}
  .section-head{margin-bottom:30px}
  .section-head h2{font-size:24px}
  .steps{grid-template-columns:1fr}
  .cta-band{padding:34px 22px;border-radius:18px}
  .cta-band h2{font-size:24px}
  .cta-actions .btn{width:100%}
  .footer-grid{grid-template-columns:1fr;gap:30px}
  .footer-bottom{flex-direction:column;gap:8px}
  .faq summary{padding:16px 18px;font-size:15px}
  .faq .answer{padding:0 18px 18px}
  .scene-tags span{font-size:13px}
}

/* roulang page: category3 */
:root{
  --primary:#24536B;
  --primary-dark:#1C4358;
  --primary-soft:#EAF1F5;
  --accent:#C77D3A;
  --accent-soft:#FBF2E9;
  --teal:#2F8F83;
  --teal-soft:#E9F5F2;
  --bg:#F7F8FA;
  --card:#FFFFFF;
  --text:#1B2A33;
  --muted:#5C6B78;
  --border:#E2E8EE;
  --line:#EEF2F5;
  --footer:#0F2532;
  --danger:#C0392B;
  --radius-card:16px;
  --radius-btn:10px;
  --shadow-sm:0 6px 20px rgba(18,42,60,.08);
  --shadow-md:0 12px 28px rgba(18,42,60,.12);
  --shadow-lg:0 18px 44px rgba(18,42,60,.14);
  --container:1200px;
  --nav-h:76px;
}
*,*::before,*::after{box-sizing:border-box}
html{-webkit-text-size-adjust:100%}
body{
  margin:0;
  font-family:system-ui,-apple-system,"PingFang SC","Microsoft YaHei","Noto Sans SC",sans-serif;
  font-size:16px;
  line-height:1.75;
  color:var(--text);
  background:var(--bg);
  -webkit-font-smoothing:antialiased;
}
img{max-width:100%;display:block;height:auto}
a{color:inherit;text-decoration:none;transition:color .2s ease}
a:hover{color:var(--primary)}
ul,ol{margin:0;padding:0;list-style:none}
h1,h2,h3,h4{margin:0;font-weight:700;letter-spacing:-.01em;line-height:1.3}
p{margin:0}
button{font-family:inherit;cursor:pointer;border:0;background:none;color:inherit}
input,select,textarea{font-family:inherit;font-size:15px;color:var(--text)}
:focus-visible{outline:2px solid var(--primary);outline-offset:2px}
.container{width:100%;max-width:var(--container);margin:0 auto;padding:0 24px}
.section{padding:80px 0}
.section-alt{background:#fff}
.section-head{max-width:760px;margin-bottom:40px}
.section-tag{
  display:inline-flex;align-items:center;gap:8px;
  font-size:13px;font-weight:600;letter-spacing:.04em;
  color:var(--primary);background:var(--primary-soft);
  padding:6px 14px;border-radius:999px;margin-bottom:16px;
}
.section-title{font-size:32px;font-weight:700;margin-bottom:14px}
.section-title::after{
  content:"";display:block;width:46px;height:4px;border-radius:2px;
  background:var(--primary);margin-top:16px;
}
.section-desc{color:var(--muted);font-size:16px;line-height:1.8}

/* ---------- 按钮 ---------- */
.btn{
  display:inline-flex;align-items:center;justify-content:center;gap:8px;
  min-height:44px;padding:12px 22px;border-radius:var(--radius-btn);
  font-size:15px;font-weight:600;border:1px solid transparent;
  transition:background .2s ease,color .2s ease,border-color .2s ease,box-shadow .2s ease,transform .15s ease;
  white-space:nowrap;
}
.btn-primary{background:var(--primary);color:#fff;box-shadow:0 8px 18px rgba(36,83,107,.22)}
.btn-primary:hover{background:var(--primary-dark);color:#fff;box-shadow:0 12px 24px rgba(36,83,107,.28);transform:translateY(-1px)}
.btn-primary:active{transform:translateY(0)}
.btn-outline{background:#fff;color:var(--primary);border-color:#C7D6DF}
.btn-outline:hover{background:var(--primary-soft);border-color:var(--primary);color:var(--primary)}
.btn-ghost{background:rgba(255,255,255,.14);color:#fff;border-color:rgba(255,255,255,.5)}
.btn-ghost:hover{background:rgba(255,255,255,.24);color:#fff}
.btn:disabled{opacity:.5;cursor:not-allowed}
.btn-block{width:100%}

/* ---------- 导航 ---------- */
.site-header{
  position:absolute;top:0;left:0;right:0;z-index:60;
  transition:background .25s ease,box-shadow .25s ease,border-color .25s ease,transform .25s ease;
}
.header-wrap{padding-top:14px;padding-bottom:14px}
.header-inner{
  display:flex;align-items:center;gap:24px;
  min-height:var(--nav-h);
  padding:10px 18px;
  border-radius:16px;
  background:rgba(255,255,255,.68);
  backdrop-filter:blur(16px) saturate(1.2);
  -webkit-backdrop-filter:blur(16px) saturate(1.2);
  border:1px solid rgba(255,255,255,.55);
  box-shadow:0 8px 24px rgba(18,42,60,.08);
}
.site-header.is-sticky{
  position:fixed;
  background:rgba(255,255,255,.96);
  border-bottom:1px solid var(--border);
  box-shadow:0 6px 18px rgba(18,42,60,.06);
}
.site-header.is-sticky .header-inner{
  background:transparent;border-color:transparent;box-shadow:none;backdrop-filter:none;-webkit-backdrop-filter:none;
}
.site-header.is-sticky .header-wrap{padding-top:0;padding-bottom:0}
.brand{display:flex;align-items:center;gap:12px;flex-shrink:0}
.brand-mark{width:40px;height:40px;flex-shrink:0}
.brand-text{display:flex;flex-direction:column;line-height:1.25}
.brand-name{font-size:18px;font-weight:700;color:var(--text);letter-spacing:.01em}
.brand-sub{font-size:11.5px;color:var(--muted);letter-spacing:.03em}
.nav-list{display:flex;align-items:center;gap:6px;margin-left:auto}
.nav-link{
  position:relative;display:inline-flex;align-items:center;
  min-height:44px;padding:0 14px;border-radius:10px;
  font-size:15px;font-weight:500;color:#31434F;
}
.nav-link:hover{color:var(--primary);background:rgba(36,83,107,.06)}
.nav-link.is-active{color:var(--primary);font-weight:700;background:var(--primary-soft)}
.header-tools{display:flex;align-items:center;gap:10px;flex-shrink:0}
.icon-btn{
  display:inline-flex;align-items:center;justify-content:center;
  width:44px;height:44px;border-radius:10px;color:#31434F;
  border:1px solid rgba(36,83,107,.14);background:rgba(255,255,255,.7);
  transition:background .2s ease,color .2s ease,border-color .2s ease;
}
.icon-btn:hover{color:var(--primary);border-color:var(--primary);background:#fff}
.nav-toggle{
  display:none;width:44px;height:44px;border-radius:10px;
  border:1px solid rgba(36,83,107,.14);background:rgba(255,255,255,.7);
  position:relative;align-items:center;justify-content:center;
}
.nav-toggle span,
.nav-toggle span::before,
.nav-toggle span::after{
  content:"";display:block;height:2px;width:18px;border-radius:2px;background:var(--primary);
  transition:transform .25s ease,opacity .2s ease;
}
.nav-toggle span::before{transform:translateY(-6px)}
.nav-toggle span::after{transform:translateY(4px)}
.nav-toggle.is-open span{background:transparent}
.nav-toggle.is-open span::before{transform:translateY(1px) rotate(45deg)}
.nav-toggle.is-open span::after{transform:translateY(-1px) rotate(-45deg)}

/* ---------- 面包屑 ---------- */
.crumb-bar{background:#fff;border-bottom:1px solid var(--line)}
.breadcrumb{
  display:flex;align-items:center;gap:10px;flex-wrap:wrap;
  font-size:13.5px;color:var(--muted);padding:16px 0;
}
.breadcrumb a:hover{color:var(--primary)}
.breadcrumb .sep{color:#B7C3CC}

/* ---------- Hero ---------- */
.case-hero{position:relative;overflow:hidden;background:#fff;padding:150px 0 72px}
.case-hero::before{
  content:"";position:absolute;inset:0;
  background-image:url('/assets/images/backpic/back-2.webp');
  background-size:cover;background-position:center;
  opacity:.10;
}
.case-hero::after{
  content:"";position:absolute;inset:0;
  background:linear-gradient(180deg,rgba(247,248,250,.2) 0%,rgba(255,255,255,.86) 78%,#fff 100%);
}
.case-hero .container{position:relative;z-index:2}
.hero-grid{display:grid;grid-template-columns:1.05fr .95fr;gap:56px;align-items:center}
.hero-title{font-size:44px;font-weight:750;margin-bottom:20px;letter-spacing:-.02em}
.hero-title em{font-style:normal;color:var(--primary)}
.hero-sub{font-size:17px;color:var(--muted);max-width:560px;margin-bottom:28px;line-height:1.85}
.hero-actions{display:flex;flex-wrap:wrap;gap:14px;margin-bottom:34px}
.hero-points{display:flex;flex-wrap:wrap;gap:26px}
.hero-point{display:flex;align-items:flex-start;gap:10px;font-size:14.5px;color:#3B4B57;max-width:220px}
.hero-point svg{flex-shrink:0;margin-top:3px}
.hero-media{position:relative}
.hero-media img{
  width:100%;border-radius:20px;box-shadow:var(--shadow-lg);
  aspect-ratio:4/3;object-fit:cover;
}
.hero-float{
  position:absolute;left:-18px;bottom:-22px;
  background:#fff;border:1px solid var(--border);border-radius:14px;
  padding:16px 20px;box-shadow:var(--shadow-md);min-width:200px;
}
.hero-float strong{display:block;font-size:26px;color:var(--primary);letter-spacing:-.01em}
.hero-float span{font-size:13px;color:var(--muted)}
.hero-badge{
  position:absolute;top:16px;right:16px;
  background:rgba(15,37,50,.78);color:#fff;
  font-size:12.5px;padding:7px 14px;border-radius:999px;
  backdrop-filter:blur(6px);
}

/* ---------- 案例主体 ---------- */
.case-layout{display:grid;grid-template-columns:262px 1fr;gap:40px;align-items:start}
.scene-side{position:sticky;top:100px}
.scene-side-title{
  font-size:13px;font-weight:700;letter-spacing:.08em;color:var(--muted);
  text-transform:uppercase;margin-bottom:14px;
}
.scene-tabs{display:flex;flex-direction:column;gap:8px}
.scene-tab{
  display:flex;align-items:center;justify-content:space-between;gap:12px;
  width:100%;min-height:48px;padding:12px 16px;text-align:left;
  background:#fff;border:1px solid var(--border);border-radius:12px;
  font-size:15px;font-weight:600;color:#31434F;
  transition:border-color .2s ease,background .2s ease,color .2s ease,box-shadow .2s ease;
}
.scene-tab:hover{border-color:#C7D6DF;background:var(--primary-soft);color:var(--primary)}
.scene-tab.is-active{
  background:var(--primary);border-color:var(--primary);color:#fff;
  box-shadow:0 10px 22px rgba(36,83,107,.22);
}
.scene-tab .count{
  font-size:12px;font-weight:700;padding:2px 9px;border-radius:999px;
  background:var(--primary-soft);color:var(--primary);
}
.scene-tab.is-active .count{background:rgba(255,255,255,.22);color:#fff}
.scene-note{
  margin-top:18px;padding:16px;border-radius:12px;background:var(--accent-soft);
  border:1px dashed #E7C9A9;font-size:13.5px;color:#8A5623;line-height:1.7;
}
.case-panel{display:none}
.case-panel.is-active{display:grid;gap:24px;animation:fadeUp .35s ease}
@keyframes fadeUp{from{opacity:0;transform:translateY(10px)}to{opacity:1;transform:none}}
.case-card{
  display:grid;grid-template-columns:298px 1fr;
  background:#fff;border:1px solid var(--border);border-radius:var(--radius-card);
  overflow:hidden;box-shadow:var(--shadow-sm);
  transition:box-shadow .25s ease,transform .25s ease;
}
.case-card:hover{box-shadow:var(--shadow-md);transform:translateY(-2px)}
.case-media{position:relative;overflow:hidden;min-height:100%}
.case-media img{width:100%;height:100%;object-fit:cover;transition:transform .4s ease}
.case-card:hover .case-media img{transform:scale(1.03)}
.case-badge{
  position:absolute;left:14px;top:14px;
  background:rgba(255,255,255,.92);color:var(--primary);
  font-size:12.5px;font-weight:700;padding:6px 13px;border-radius:999px;
  border:1px solid rgba(36,83,107,.14);
}
.case-body{padding:26px 28px 24px;display:flex;flex-direction:column;gap:14px}
.case-body h3{font-size:20px;font-weight:700}
.case-desc{font-size:15px;color:var(--muted);line-height:1.8}
.case-nodes{display:flex;flex-wrap:wrap;gap:8px}
.case-nodes li{
  font-size:13px;color:#3B4B57;background:var(--bg);
  border:1px solid var(--line);padding:5px 12px;border-radius:999px;
}
.case-stats{
  display:grid;grid-template-columns:repeat(3,minmax(0,1fr));gap:12px;
  padding-top:16px;border-top:1px solid var(--line);margin-top:auto;
}
.case-stats strong{display:block;font-size:19px;color:var(--teal);font-variant-numeric:tabular-nums}
.case-stats span{font-size:12.5px;color:var(--muted)}

/* ---------- 交付节奏 ---------- */
.steps{display:grid;grid-template-columns:repeat(5,minmax(0,1fr));gap:18px;counter-reset:step}
.step{
  position:relative;background:#fff;border:1px solid var(--border);
  border-radius:var(--radius-card);padding:56px 20px 24px;
  box-shadow:var(--shadow-sm);transition:box-shadow .25s ease,transform .25s ease;
}
.step:hover{box-shadow:var(--shadow-md);transform:translateY(-2px)}
.step::before{
  counter-increment:step;content:"0" counter(step);
  position:absolute;top:18px;left:20px;
  font-size:26px;font-weight:750;color:var(--primary);opacity:.22;
  font-variant-numeric:tabular-nums;
}
.step::after{
  content:"";position:absolute;left:20px;right:20px;top:52px;height:2px;
  background:linear-gradient(90deg,var(--primary-soft),transparent);
}
.step h3{font-size:17px;margin-bottom:8px}
.step p{font-size:14px;color:var(--muted);line-height:1.75}

/* ---------- 结果数据 ---------- */
.stat-band{
  display:grid;grid-template-columns:repeat(4,minmax(0,1fr));gap:1px;
  background:var(--border);border:1px solid var(--border);
  border-radius:var(--radius-card);overflow:hidden;
}
.stat-item{background:#fff;padding:30px 24px}
.stat-item strong{
  display:block;font-size:32px;font-weight:750;color:var(--primary);
  letter-spacing:-.02em;font-variant-numeric:tabular-nums;
}
.stat-item span{display:block;font-size:13.5px;color:var(--muted);margin-top:6px}

/* ---------- 客户反馈 ---------- */
.quote-grid{display:grid;grid-template-columns:1.2fr .8fr;gap:24px}
.quote-card{
  background:#fff;border:1px solid var(--border);border-radius:var(--radius-card);
  padding:30px;box-shadow:var(--shadow-sm);position:relative;
}
.quote-card::before{
  content:"“";position:absolute;top:6px;left:22px;
  font-size:64px;color:var(--primary);opacity:.14;line-height:1;
}
.quote-card p{font-size:15.5px;color:#33454F;line-height:1.85;margin-bottom:18px;position:relative;z-index:1}
.quote-meta{display:flex;align-items:center;gap:12px;font-size:13.5px;color:var(--muted)}
.quote-avatar{
  width:40px;height:40px;border-radius:50%;background:var(--primary-soft);
  display:flex;align-items:center;justify-content:center;color:var(--primary);font-weight:700;font-size:15px;
}
.quote-side{
  background:linear-gradient(160deg,#24536B 0%,#1B4358 100%);
  border-radius:var(--radius-card);padding:30px;color:#fff;
}
.quote-side h3{font-size:19px;margin-bottom:14px}
.quote-side ul{display:grid;gap:12px;margin-bottom:22px}
.quote-side li{font-size:14.5px;color:#D3E0E8;padding-left:18px;position:relative;line-height:1.75}
.quote-side li::before{
  content:"";position:absolute;left:0;top:9px;width:7px;height:7px;border-radius:50%;background:var(--accent);
}

/* ---------- FAQ ---------- */
.faq-wrap{max-width:880px;margin:0 auto}
.faq-item{
  background:#fff;border:1px solid var(--border);border-radius:14px;
  margin-bottom:12px;overflow:hidden;transition:border-color .2s ease,box-shadow .2s ease;
}
.faq-item:hover{border-color:#C7D6DF}
.faq-item.is-open{border-color:#C7D6DF;box-shadow:var(--shadow-sm)}
.faq-q{
  display:flex;align-items:center;justify-content:space-between;gap:16px;
  width:100%;min-height:56px;padding:18px 22px;text-align:left;
  font-size:16px;font-weight:700;color:var(--text);
}
.faq-q:hover{background:var(--bg)}
.faq-icon{
  flex-shrink:0;width:24px;height:24px;border-radius:50%;
  border:1px solid #C7D6DF;position:relative;transition:transform .25s ease,background .2s ease,border-color .2s ease;
}
.faq-icon::before,
.faq-icon::after{
  content:"";position:absolute;background:var(--primary);border-radius:2px;
  left:50%;top:50%;transform:translate(-50%,-50%);
}
.faq-icon::before{width:11px;height:2px}
.faq-icon::after{width:2px;height:11px;transition:opacity .2s ease}
.faq-item.is-open .faq-icon{background:var(--primary);border-color:var(--primary);transform:rotate(180deg)}
.faq-item.is-open .faq-icon::before{background:#fff}
.faq-item.is-open .faq-icon::after{opacity:0}
.faq-a{max-height:0;overflow:hidden;transition:max-height .3s ease}
.faq-a-inner{padding:0 22px 22px;font-size:15px;color:var(--muted);line-height:1.85}
.faq-item.is-open .faq-a{max-height:420px}

/* ---------- CTA 表单 ---------- */
.cta-band{
  background:linear-gradient(150deg,#0F2532 0%,#1B4358 62%,#24536B 100%);
  color:#fff;padding:80px 0;
}
.cta-grid{display:grid;grid-template-columns:1fr 460px;gap:56px;align-items:center}
.cta-copy h2{font-size:34px;color:#fff;margin-bottom:18px}
.cta-copy p{color:#C8D3DB;font-size:16px;line-height:1.85;max-width:520px;margin-bottom:26px}
.cta-list{display:grid;gap:12px;margin-bottom:8px}
.cta-list li{display:flex;align-items:flex-start;gap:10px;font-size:15px;color:#D3E0E8}
.form-card{
  background:#fff;border-radius:18px;padding:30px;box-shadow:var(--shadow-lg);color:var(--text);
}
.form-card h3{font-size:20px;margin-bottom:6px}
.form-card .form-hint{font-size:13.5px;color:var(--muted);margin-bottom:22px}
.field{margin-bottom:16px}
.field label{display:block;font-size:13.5px;font-weight:600;color:#3B4B57;margin-bottom:7px}
.field label .req{color:var(--accent)}
.field input,
.field select,
.field textarea{
  width:100%;min-height:44px;padding:11px 14px;
  border:1px solid #D8E0E8;border-radius:10px;background:#fff;
  transition:border-color .2s ease,box-shadow .2s ease;
}
.field textarea{min-height:96px;resize:vertical;line-height:1.7}
.field input:focus,
.field select:focus,
.field textarea:focus{
  outline:none;border-color:var(--primary);box-shadow:0 0 0 3px rgba(36,83,107,.12);
}
.form-privacy{font-size:12.5px;color:var(--muted);margin-top:14px;line-height:1.7}
.form-msg{margin-top:14px;font-size:14px;border-radius:10px;padding:0;max-height:0;overflow:hidden;transition:all .2s ease}
.form-msg.is-error{max-height:80px;padding:11px 14px;background:#FCEDEB;color:var(--danger);border:1px solid #F3C9C3}
.form-msg.is-success{max-height:80px;padding:11px 14px;background:var(--teal-soft);color:var(--teal);border:1px solid #BFE2DB}

/* ---------- 页脚 ---------- */
.site-footer{background:var(--footer);color:#C8D3DB;padding:64px 0 0;margin-top:0}
.footer-grid{display:grid;grid-template-columns:1.5fr 1fr 1fr 1.2fr;gap:40px;padding-bottom:44px}
.footer-brand{display:flex;align-items:center;gap:12px;margin-bottom:16px}
.footer-brand-name{font-size:17px;font-weight:700;color:#fff}
.footer-about{font-size:14px;line-height:1.85;color:#9FB3BF}
.footer-col h4{font-size:15px;color:#fff;margin-bottom:16px;font-weight:700}
.footer-col ul{display:grid;gap:10px}
.footer-col li{font-size:14px;color:#9FB3BF}
.footer-col a{font-size:14px;color:#9FB3BF}
.footer-col a:hover{color:#fff}
.footer-contact span{display:inline-block;min-width:62px;color:#7F97A5}
.footer-bottom{
  border-top:1px solid rgba(255,255,255,.1);
  padding:20px 0 26px;display:flex;justify-content:space-between;flex-wrap:wrap;gap:10px;
  font-size:13px;color:#7F97A5;
}
.footer-bottom a{color:#9FB3BF}
.footer-bottom a:hover{color:#fff}

/* ---------- 响应式 ---------- */
@media (max-width:1200px){
  .hero-title{font-size:38px}
}
@media (max-width:1024px){
  .section{padding:64px 0}
  .case-hero{padding:136px 0 60px}
  .hero-grid{grid-template-columns:1fr;gap:40px}
  .hero-title{font-size:34px}
  .case-layout{grid-template-columns:1fr;gap:26px}
  .scene-side{position:static;top:auto}
  .scene-tabs{flex-direction:row;overflow-x:auto;padding-bottom:6px;gap:10px;scrollbar-width:thin}
  .scene-tab{width:auto;flex:0 0 auto;white-space:nowrap}
  .steps{grid-template-columns:repeat(2,minmax(0,1fr))}
  .stat-band{grid-template-columns:repeat(2,minmax(0,1fr))}
  .quote-grid{grid-template-columns:1fr}
  .cta-grid{grid-template-columns:1fr;gap:34px}
  .footer-grid{grid-template-columns:1fr 1fr;gap:32px}
  .nav-list{
    position:fixed;top:0;right:0;height:100vh;width:82%;max-width:340px;
    background:#fff;flex-direction:column;align-items:stretch;gap:4px;
    padding:88px 22px 28px;margin:0;
    transform:translateX(100%);transition:transform .3s ease;
    box-shadow:-16px 0 40px rgba(18,42,60,.18);z-index:70;
    overflow-y:auto;
  }
  .nav-list.is-open{transform:translateX(0)}
  .nav-link{padding:14px 16px;border-radius:12px;font-size:16px}
  .nav-toggle{display:inline-flex;z-index:80}
  .header-tools .btn-primary{display:none}
}
@media (max-width:768px){
  .case-card{grid-template-columns:1fr}
  .case-media{aspect-ratio:16/9}
  .case-body{padding:22px}
  .hero-points{gap:16px}
}
@media (max-width:640px){
  .container{padding:0 18px}
  .section{padding:48px 0}
  .section-title{font-size:24px}
  .case-hero{padding:120px 0 48px}
  .hero-title{font-size:30px}
  .hero-sub{font-size:15.5px}
  .hero-media img{aspect-ratio:16/10}
  .hero-float{position:static;margin-top:14px;display:inline-block}
  .hero-badge{display:none}
  .steps{grid-template-columns:1fr}
  .stat-band{grid-template-columns:1fr}
  .stat-item{padding:24px 20px}
  .stat-item strong{font-size:26px}
  .case-stats{grid-template-columns:1fr 1fr}
  .cta-band{padding:56px 0}
  .cta-copy h2{font-size:26px}
  .form-card{padding:22px}
  .footer-grid{grid-template-columns:1fr;gap:28px}
  .footer-bottom{flex-direction:column}
  .brand-sub{display:none}
}

/* roulang page: category4 */
:root{
  --primary:#24536B;
  --primary-dark:#1B4054;
  --primary-soft:#EAF1F5;
  --accent:#C77D3A;
  --accent-soft:#FBF1E7;
  --mint:#2F8F83;
  --mint-soft:#E8F4F2;
  --bg:#F7F8FA;
  --card:#FFFFFF;
  --text:#1B2A33;
  --text-soft:#33454F;
  --muted:#5C6B78;
  --border:#E2E8EE;
  --line:#EEF2F5;
  --footer:#0F2532;
  --danger:#C0392B;
  --radius-card:16px;
  --radius-btn:10px;
  --radius-img:14px;
  --shadow-sm:0 6px 20px rgba(18,42,60,.08);
  --shadow-md:0 12px 28px rgba(18,42,60,.12);
  --container:1200px;
  --gutter:24px;
}
*,*::before,*::after{box-sizing:border-box}
html{-webkit-text-size-adjust:100%;scroll-behavior:smooth;scroll-padding-top:104px}
body{
  margin:0;
  font-family:system-ui,-apple-system,"PingFang SC","Microsoft YaHei","Noto Sans SC",sans-serif;
  font-size:16px;
  line-height:1.75;
  color:var(--text);
  background:var(--bg);
  -webkit-font-smoothing:antialiased;
}
img{max-width:100%;display:block;height:auto}
a{color:inherit;text-decoration:none;transition:color .2s ease}
button,input,select,textarea{font:inherit;color:inherit}
h1,h2,h3,h4{margin:0;font-weight:700;line-height:1.3;letter-spacing:-.01em}
p{margin:0 0 1em}
p:last-child{margin-bottom:0}
ul,ol{margin:0;padding:0}
:focus-visible{outline:2px solid var(--primary);outline-offset:2px}
.container{width:100%;max-width:var(--container);margin:0 auto;padding:0 var(--gutter)}

/* ---------- 顶部导航 ---------- */
.site-header{
  position:fixed;top:0;left:0;right:0;z-index:200;
  background:rgba(255,255,255,.68);
  -webkit-backdrop-filter:blur(16px) saturate(1.2);
  backdrop-filter:blur(16px) saturate(1.2);
  border-bottom:1px solid rgba(255,255,255,.55);
  box-shadow:0 8px 24px rgba(18,42,60,.08);
  transition:background .25s ease,box-shadow .25s ease,border-color .25s ease;
}
.site-header.is-stuck{
  background:rgba(255,255,255,.96);
  border-bottom-color:var(--border);
  box-shadow:0 2px 12px rgba(18,42,60,.06);
}
.header-inner{display:flex;align-items:center;gap:20px;height:74px}
.brand{display:flex;align-items:center;gap:10px;flex:none}
.brand-mark{width:38px;height:38px;flex:none}
.brand-text{display:flex;flex-direction:column;line-height:1.22}
.brand-name{font-size:17px;font-weight:750;letter-spacing:-.02em;color:var(--text)}
.brand-sub{font-size:11px;color:var(--muted);letter-spacing:.05em}
.nav-list{display:flex;align-items:center;gap:4px;margin-left:auto}
.nav-link{
  padding:9px 14px;border-radius:999px;font-size:15px;color:var(--text);white-space:nowrap;
  transition:background .2s ease,color .2s ease;
}
.nav-link:hover{background:rgba(36,83,107,.08);color:var(--primary)}
.nav-link.is-active{background:rgba(36,83,107,.1);color:var(--primary);font-weight:650}
.header-tools{display:flex;align-items:center;gap:10px;flex:none}
.icon-btn{
  width:40px;height:40px;border-radius:12px;border:1px solid var(--border);background:#fff;
  display:grid;place-items:center;color:var(--muted);cursor:pointer;
  transition:color .2s ease,border-color .2s ease;
}
.icon-btn:hover{color:var(--primary);border-color:var(--primary)}
.nav-toggle{
  display:none;width:44px;height:44px;border-radius:12px;border:1px solid var(--border);
  background:#fff;cursor:pointer;position:relative;z-index:220;
}
.nav-toggle span{display:block;width:18px;height:2px;background:var(--primary);margin:0 auto;position:relative;transition:background .2s ease}
.nav-toggle span::before,.nav-toggle span::after{
  content:"";position:absolute;left:0;width:18px;height:2px;background:var(--primary);transition:transform .25s ease,top .25s ease;
}
.nav-toggle span::before{top:-6px}
.nav-toggle span::after{top:6px}
.nav-toggle.is-open span{background:transparent}
.nav-toggle.is-open span::before{top:0;transform:rotate(45deg)}
.nav-toggle.is-open span::after{top:0;transform:rotate(-45deg)}

/* ---------- 按钮 ---------- */
.btn{
  display:inline-flex;align-items:center;justify-content:center;gap:8px;
  min-height:44px;padding:11px 22px;border-radius:var(--radius-btn);
  font-size:15px;font-weight:600;cursor:pointer;border:1px solid transparent;
  transition:background .2s ease,color .2s ease,box-shadow .2s ease,transform .15s ease,border-color .2s ease;
  white-space:nowrap;
}
.btn-primary{background:var(--primary);color:#fff}
.btn-primary:hover{background:var(--primary-dark);box-shadow:var(--shadow-md);transform:translateY(-1px)}
.btn-primary:active{transform:translateY(1px)}
.btn-ghost{background:#fff;border-color:var(--primary);color:var(--primary)}
.btn-ghost:hover{background:var(--primary-soft)}
.btn-accent{background:var(--accent);color:#fff}
.btn-accent:hover{background:#B06C2F;box-shadow:var(--shadow-md)}
.btn-block{width:100%}
.btn:disabled{opacity:.5;cursor:not-allowed}

/* ---------- 页面头部 ---------- */
.page-hero{
  position:relative;
  padding:142px 0 68px;
  background:
    linear-gradient(180deg,rgba(238,243,247,.94),rgba(247,248,250,.99)),
    url('/assets/images/backpic/back-2.webp') center/cover no-repeat;
  border-bottom:1px solid var(--border);
}
.page-hero .container{position:relative;z-index:2;display:grid;grid-template-columns:1.18fr .82fr;gap:48px;align-items:center}
.breadcrumb{display:flex;flex-wrap:wrap;gap:8px;font-size:13.5px;color:var(--muted);margin-bottom:18px}
.breadcrumb a:hover{color:var(--primary)}
.breadcrumb .sep{color:#B9C5CF}
.breadcrumb .current{color:var(--text-soft)}
.eyebrow{
  display:inline-block;font-size:12.5px;font-weight:650;letter-spacing:.06em;
  color:var(--accent);background:var(--accent-soft);border-radius:999px;padding:5px 14px;margin-bottom:16px;
}
.page-hero h1{
  font-size:clamp(30px,4vw,44px);
  line-height:1.22;
  letter-spacing:-.02em;
  margin-bottom:18px;
}
.page-hero .lead{font-size:17px;line-height:1.8;color:var(--text-soft);max-width:36em;margin-bottom:26px}
.hero-metrics{display:flex;flex-wrap:wrap;gap:14px 34px;padding-top:22px;border-top:1px solid var(--border)}
.metric-num{font-size:26px;font-weight:750;color:var(--primary);font-variant-numeric:tabular-nums;line-height:1.2}
.metric-label{font-size:13px;color:var(--muted)}
.hero-panel{
  background:#fff;border:1px solid var(--border);border-radius:18px;
  padding:26px 26px 22px;box-shadow:var(--shadow-md);
}
.hero-panel h2{font-size:16px;color:var(--primary);margin-bottom:14px}
.hero-panel ul{list-style:none;display:grid;gap:12px}
.hero-panel li{display:flex;gap:10px;font-size:14.5px;line-height:1.65;color:var(--text-soft)}
.hero-panel .tick{
  flex:none;width:20px;height:20px;border-radius:6px;background:var(--mint-soft);color:var(--mint);
  display:grid;place-items:center;font-size:12px;font-weight:700;margin-top:2px;
}
.hero-panel .panel-note{
  margin-top:18px;padding-top:16px;border-top:1px solid var(--line);
  font-size:13px;color:var(--muted);line-height:1.7;
}

/* ---------- 正文布局 ---------- */
.doc-layout{
  display:grid;grid-template-columns:252px 1fr;gap:44px;align-items:start;
  padding:64px 0 84px;
}
.doc-toc{
  position:sticky;top:100px;
  background:#fff;border:1px solid var(--border);border-radius:var(--radius-card);
  padding:20px 18px;box-shadow:var(--shadow-sm);
}
.doc-toc h2{font-size:13px;color:var(--muted);letter-spacing:.09em;font-weight:650;margin-bottom:12px}
.doc-toc ol{list-style:none}
.doc-toc a{
  display:block;padding:9px 12px;border-radius:10px;font-size:14.5px;color:var(--text-soft);
  border-left:2px solid transparent;transition:background .2s ease,color .2s ease,border-color .2s ease;
}
.doc-toc a:hover{background:var(--bg);color:var(--primary);border-left-color:var(--accent)}
.doc-toc .toc-cta{margin-top:16px;padding-top:16px;border-top:1px solid var(--line);font-size:13px;color:var(--muted);line-height:1.7}

.doc-card{
  background:#fff;border:1px solid var(--border);border-radius:var(--radius-card);
  padding:34px 38px;box-shadow:var(--shadow-sm);margin-bottom:26px;
}
.doc-card h2{
  font-size:clamp(22px,2.4vw,28px);position:relative;padding-left:16px;margin-bottom:18px;
}
.doc-card h2::before{
  content:"";position:absolute;left:0;top:6px;bottom:6px;width:4px;border-radius:3px;background:var(--primary);
}
.doc-card h3{font-size:19px;margin:28px 0 12px;color:var(--text)}
.doc-card p{color:var(--text-soft);line-height:1.85}
.doc-card > p:first-of-type{margin-top:0}

/* 步骤条 */
.steps{display:grid;gap:14px;margin-top:24px}
.step{
  display:flex;gap:16px;padding:18px 20px;border:1px solid var(--border);border-radius:14px;background:var(--bg);
  transition:box-shadow .2s ease,transform .2s ease,background .2s ease;
}
.step:hover{background:#fff;box-shadow:var(--shadow-sm);transform:translateY(-2px)}
.step-num{
  flex:none;width:42px;height:42px;border-radius:12px;background:#fff;border:1px solid var(--border);
  color:var(--primary);display:grid;place-items:center;font-weight:750;font-variant-numeric:tabular-nums;
}
.step h3{margin:0 0 4px;font-size:16.5px}
.step p{margin:0;font-size:14.5px;color:var(--muted);line-height:1.72}

/* 表格 */
.table-wrap{overflow-x:auto;margin-top:22px;border:1px solid var(--border);border-radius:14px}
table{width:100%;border-collapse:collapse;font-size:15px;min-width:620px}
thead th{
  background:#F3F6F9;color:var(--primary);text-align:left;font-weight:650;
  padding:13px 16px;border-bottom:1px solid var(--border);white-space:nowrap;font-size:14.5px;
}
tbody td{padding:14px 16px;border-bottom:1px solid var(--line);color:var(--text-soft);vertical-align:top;line-height:1.7}
tbody tr:last-child td{border-bottom:0}
tbody tr:hover td{background:#FAFBFC}

/* 图文交替 */
.split{display:grid;grid-template-columns:1fr 1fr;gap:34px;align-items:center;margin-top:24px}
.split-media img{border-radius:var(--radius-img);box-shadow:var(--shadow-sm);width:100%;aspect-ratio:4/3;object-fit:cover}
.split.reverse .split-media{order:2}
.split h3{margin-top:0;font-size:19px}
.split p{font-size:15px}
.split ul{margin-top:12px;display:grid;gap:10px}
.split ul li{position:relative;padding-left:18px;font-size:14.8px;color:var(--text-soft);line-height:1.75}
.split ul li::before{content:"";position:absolute;left:0;top:11px;width:6px;height:6px;border-radius:2px;background:var(--mint)}

/* 信息卡 */
.info-grid{display:grid;grid-template-columns:repeat(2,1fr);gap:16px;margin-top:24px}
.info-card{
  border:1px solid var(--border);border-radius:14px;padding:20px 22px;background:#fff;
  transition:box-shadow .2s ease,transform .2s ease;
}
.info-card:hover{box-shadow:var(--shadow-sm);transform:translateY(-2px)}
.info-card .tag{
  display:inline-block;font-size:12px;font-weight:650;color:var(--mint);background:var(--mint-soft);
  border-radius:999px;padding:3px 11px;margin-bottom:10px;letter-spacing:.02em;
}
.info-card h4{font-size:16.5px;color:var(--primary);margin-bottom:6px}
.info-card p{margin:0;font-size:14.5px;color:var(--muted);line-height:1.72}

/* 清单 */
.check-list{list-style:none;display:grid;gap:12px;margin-top:20px}
.check-list li{display:flex;gap:12px;font-size:15px;color:var(--text-soft);line-height:1.72}
.check-list .box{
  flex:none;width:22px;height:22px;border-radius:7px;background:var(--primary-soft);color:var(--primary);
  display:grid;place-items:center;font-size:12px;font-weight:700;margin-top:3px;
}
.check-list strong{color:var(--text)}

/* 提示块 */
.callout{
  display:flex;gap:14px;background:var(--accent-soft);border-left:4px solid var(--accent);
  border-radius:0 12px 12px 0;padding:16px 20px;margin:22px 0 4px;
}
.callout .callout-icon{
  flex:none;width:24px;height:24px;border-radius:50%;background:#fff;color:var(--accent);
  display:grid;place-items:center;font-weight:750;font-size:13px;margin-top:2px;
}
.callout p{margin:0;font-size:14.8px;line-height:1.75;color:#7A4A1D}
.callout strong{color:#96541F}

.plain-list{list-style:none;display:grid;gap:12px;margin-top:20px}
.plain-list li{
  position:relative;padding:14px 18px 14px 20px;border:1px solid var(--border);border-radius:12px;
  background:#fff;font-size:15px;line-height:1.72;color:var(--text-soft);
}
.plain-list li::before{
  content:"";position:absolute;left:0;top:16px;bottom:16px;width:3px;border-radius:0 3px 3px 0;background:var(--accent);
}
.plain-list strong{color:var(--text)}

/* ---------- 常见问题 ---------- */
.faq-section{padding:0 0 84px}
.section-head{max-width:720px;margin:0 auto 34px;text-align:center}
.section-head h2{font-size:clamp(24px,2.8vw,32px);margin-bottom:12px}
.section-head p{color:var(--muted);font-size:15.5px;line-height:1.8}
.faq{max-width:880px;margin:0 auto}
.faq-item{
  background:#fff;border:1px solid var(--border);border-radius:14px;margin-bottom:12px;overflow:hidden;
  transition:box-shadow .2s ease;
}
.faq-item:hover{box-shadow:var(--shadow-sm)}
.faq-q{
  width:100%;display:flex;align-items:center;justify-content:space-between;gap:18px;
  padding:18px 22px;min-height:48px;background:none;border:0;text-align:left;cursor:pointer;
  font-size:16.5px;font-weight:650;color:var(--text);transition:background .2s ease;
}
.faq-q:hover{background:var(--bg)}
.faq-icon{
  flex:none;width:26px;height:26px;border-radius:50%;border:1px solid var(--border);
  display:grid;place-items:center;color:var(--primary);font-size:15px;line-height:1;
  transition:transform .25s ease,background .25s ease,color .25s ease;
}
.faq-item.is-open .faq-icon{transform:rotate(45deg);background:var(--primary);color:#fff;border-color:var(--primary)}
.faq-a{
  max-height:0;overflow:hidden;padding:0 22px;font-size:15px;line-height:1.82;color:var(--muted);
  transition:max-height .3s ease,padding .3s ease;
}
.faq-item.is-open .faq-a{padding-bottom:20px}

/* ---------- CTA / 表单 ---------- */
.cta-section{padding:0 0 90px}
.cta-wrap{
  background:#fff;border:1px solid var(--border);border-radius:20px;box-shadow:var(--shadow-sm);
  padding:48px;display:grid;grid-template-columns:1fr 1fr;gap:48px;align-items:start;
}
.cta-copy h2{font-size:clamp(24px,2.8vw,30px);margin-bottom:16px}
.cta-copy p{color:var(--muted);font-size:15.5px;line-height:1.85}
.trust-list{list-style:none;display:grid;gap:12px;margin:24px 0 0}
.trust-list li{display:flex;gap:10px;font-size:14.8px;color:var(--text-soft);line-height:1.7}
.trust-list .dot{
  flex:none;width:8px;height:8px;border-radius:50%;background:var(--mint);margin-top:9px;
}
.form-card{background:var(--bg);border:1px solid var(--border);border-radius:18px;padding:28px}
.field{margin-bottom:16px}
.field label{display:block;font-size:14px;font-weight:600;margin-bottom:8px;color:var(--text)}
.field .req{color:var(--accent);margin-left:2px}
.field input,.field select,.field textarea{
  width:100%;min-height:44px;padding:11px 14px;border:1px solid #D8E0E8;border-radius:10px;
  background:#fff;font-size:15px;line-height:1.5;
  transition:border-color .2s ease,box-shadow .2s ease;
}
.field textarea{min-height:104px;resize:vertical;padding-top:12px}
.field input:focus,.field select:focus,.field textarea:focus{
  outline:none;border-color:var(--primary);box-shadow:0 0 0 3px rgba(36,83,107,.12);
}
.field input::placeholder,.field textarea::placeholder{color:#9AA9B4}
.form-note{font-size:12.5px;color:var(--muted);line-height:1.7;margin-top:12px}
.form-status{
  display:none;margin-top:14px;padding:12px 16px;border-radius:10px;font-size:14px;line-height:1.65;
}
.form-status.is-error{display:block;background:#FDECEA;border:1px solid #F5C6C0;color:var(--danger)}
.form-status.is-success{display:block;background:var(--mint-soft);border:1px solid #BFE3DE;color:var(--mint)}

/* ---------- 页脚 ---------- */
.site-footer{background:var(--footer);color:#C8D3DB;padding:64px 0 0}
.footer-grid{display:grid;grid-template-columns:1.6fr 1fr 1fr 1.2fr;gap:40px}
.footer-brand{display:flex;align-items:center;gap:10px;margin-bottom:16px}
.footer-brand-name{color:#fff;font-size:17px;font-weight:700;letter-spacing:-.01em}
.footer-about{font-size:14px;line-height:1.85;color:#9FB0BC;max-width:34em}
.site-footer h4{color:#fff;font-size:15px;font-weight:650;margin-bottom:16px}
.site-footer ul{list-style:none;display:grid;gap:10px}
.site-footer ul a{font-size:14px;color:#C8D3DB}
.site-footer ul a:hover{color:#fff}
.footer-contact li{font-size:14px;color:#9FB0BC;line-height:1.7}
.footer-contact li span{color:#7E909C;margin-right:8px}
.footer-bottom{
  display:flex;justify-content:space-between;gap:16px;flex-wrap:wrap;
  border-top:1px solid rgba(255,255,255,.1);margin-top:48px;padding:22px 0;font-size:13.5px;color:#8B9DA9;
}
.footer-bottom a:hover{color:#fff}

/* ---------- 响应式 ---------- */
@media (max-width:1024px){
  .nav-list{
    position:fixed;top:0;right:0;height:100vh;width:82%;max-width:360px;
    background:#fff;flex-direction:column;align-items:stretch;gap:6px;
    padding:92px 22px 32px;margin-left:0;overflow-y:auto;
    transform:translateX(102%);transition:transform .3s ease;
    box-shadow:-12px 0 32px rgba(18,42,60,.12);z-index:210;
  }
  .nav-list.is-open{transform:translateX(0)}
  .nav-link{padding:14px 16px;font-size:16px;border-radius:12px}
  .nav-toggle{display:grid;place-items:center}
  .page-hero{padding:130px 0 56px}
  .page-hero .container{grid-template-columns:1fr;gap:32px}
  .doc-layout{grid-template-columns:1fr;gap:28px;padding:44px 0 64px}
  .doc-toc{position:static;padding:16px 16px 12px}
  .doc-toc ol{display:flex;gap:8px;overflow-x:auto;padding-bottom:6px;-webkit-overflow-scrolling:touch}
  .doc-toc li{flex:none}
  .doc-toc a{
    white-space:nowrap;border:1px solid var(--border);border-left-width:1px;
    border-radius:999px;padding:8px 14px;font-size:13.5px;
  }
  .doc-toc a:hover{border-color:var(--primary)}
  .doc-toc .toc-cta{display:none}
  .doc-card{padding:28px 26px}
  .split{grid-template-columns:1fr;gap:24px}
  .split.reverse .split-media{order:0}
  .cta-wrap{grid-template-columns:1fr;gap:32px;padding:36px 30px}
  .footer-grid{grid-template-columns:1fr 1fr;gap:32px}
}
@media (max-width:768px){
  .info-grid{grid-template-columns:1fr}
  .hero-metrics{gap:14px 26px}
  .metric-num{font-size:23px}
  .faq-section{padding-bottom:64px}
  .cta-section{padding-bottom:68px}
}
@media (max-width:640px){
  :root{--gutter:18px}
  .brand-sub{display:none}
  .brand-name{font-size:16px}
  .header-inner{height:66px;gap:12px}
  .icon-btn{display:none}
  .page-hero{padding:112px 0 44px}
  .page-hero .lead{font-size:15.5px}
  .doc-card{padding:24px 20px;border-radius:14px}
  .doc-card h2{padding-left:14px}
  .table-wrap{border-radius:12px}
  .footer-grid{grid-template-columns:1fr;gap:28px}
  .footer-bottom{flex-direction:column;gap:8px}
  .cta-wrap{padding:28px 20px;border-radius:16px}
  .form-card{padding:22px 18px}
  .faq-q{font-size:15.5px;padding:16px 18px}
  .faq-a{padding:0 18px}
}
@media (prefers-reduced-motion:reduce){
  *{transition:none !important;animation:none !important;scroll-behavior:auto !important}
}