/* roulang page: index */
:root{
  --c-primary:#1A5D8F;
  --c-primary-dark:#0E3A5C;
  --c-primary-soft:#E7F0F7;
  --c-accent:#2E9E83;
  --c-gold:#F2B03D;
  --c-bg:#F6F9FB;
  --c-card:#FFFFFF;
  --c-border:#DCE6EE;
  --c-text:#16242F;
  --c-muted:#5B6B77;
  --c-danger:#D9534F;
  --r-card:14px;
  --r-btn:10px;
  --r-badge:6px;
  --r-pill:999px;
  --sh-card:0 2px 4px rgba(16,42,67,.04),0 12px 28px rgba(16,42,67,.08);
  --sh-hover:0 18px 40px rgba(16,42,67,.12);
  --sh-nav:0 6px 20px rgba(16,42,67,.08);
  --ws:96px;
  --gap:24px;
}
*,*::before,*::after{box-sizing:border-box;}
html{-webkit-text-size-adjust:100%;scroll-behavior:smooth;}
body{
  margin:0;
  font-family:system-ui,-apple-system,"PingFang SC","Microsoft YaHei",sans-serif;
  font-size:16px;
  line-height:1.75;
  color:var(--c-text);
  background:var(--c-bg);
  -webkit-font-smoothing:antialiased;
}
img{max-width:100%;display:block;height:auto;}
a{color:var(--c-primary);text-decoration:none;transition:color .2s ease;}
a:hover{color:var(--c-primary-dark);}
h1,h2,h3,h4{margin:0 0 14px;font-weight:700;letter-spacing:-.01em;line-height:1.28;color:var(--c-text);}
h1{font-size:clamp(30px,4.4vw,52px);}
h2{font-size:clamp(25px,3.2vw,36px);}
h3{font-size:20px;font-weight:600;}
h4{font-size:16px;}
p{margin:0 0 16px;}
ul{margin:0;padding:0;list-style:none;}
button{font-family:inherit;}
:focus-visible{outline:3px solid rgba(26,93,143,.4);outline-offset:2px;border-radius:6px;}
.num,.stat-num,.tl-dot,.plan-num{font-variant-numeric:tabular-nums;}

/* ---------- 布局容器 ---------- */
.grid-container{max-width:1200px;padding-left:24px;padding-right:24px;}
.section{padding-top:var(--ws);padding-bottom:var(--ws);}
.section-alt{background:#fff;border-top:1px solid var(--c-border);border-bottom:1px solid var(--c-border);}
.section-head{max-width:760px;margin-bottom:48px;}
.eyebrow{display:inline-flex;align-items:center;gap:8px;font-size:13px;font-weight:600;color:var(--c-primary);background:var(--c-primary-soft);border-radius:var(--r-badge);padding:5px 12px;margin-bottom:16px;letter-spacing:.02em;}
.section-sub{color:var(--c-muted);font-size:17px;margin:0;}

/* ---------- 顶部导航 ---------- */
.site-header{position:sticky;top:0;z-index:80;background:#fff;border-bottom:1px solid var(--c-border);transition:box-shadow .25s ease;}
.site-header.is-scrolled{box-shadow:var(--sh-nav);}
.header-inner{display:flex;align-items:center;gap:28px;height:72px;transition:height .25s ease;}
.site-header.is-scrolled .header-inner{height:64px;}
.brand{display:flex;align-items:center;gap:10px;flex:0 0 auto;}
.brand-mark{width:38px;height:38px;border-radius:11px;background:linear-gradient(135deg,var(--c-primary),var(--c-primary-dark));color:#fff;display:flex;align-items:center;justify-content:center;font-size:17px;font-weight:700;letter-spacing:0;}
.brand-text{font-size:17px;font-weight:700;color:var(--c-text);white-space:nowrap;}
.main-nav{display:flex;align-items:center;gap:6px;margin-left:8px;flex:1 1 auto;}
.nav-link{position:relative;padding:8px 14px;border-radius:var(--r-badge);font-size:15px;font-weight:500;color:var(--c-muted);}
.nav-link:hover{color:var(--c-primary);background:var(--c-primary-soft);}
.nav-link.is-active{color:var(--c-primary);font-weight:600;}
.nav-link.is-active::after{content:"";position:absolute;left:14px;right:14px;bottom:-1px;height:2px;background:var(--c-primary);border-radius:2px;}
.header-cta{display:flex;align-items:center;gap:12px;}
.nav-toggle{display:none;width:42px;height:42px;border:1px solid var(--c-border);background:#fff;border-radius:var(--r-btn);color:var(--c-text);font-size:17px;cursor:pointer;align-items:center;justify-content:center;transition:background .2s ease,border-color .2s ease;}
.nav-toggle:hover{background:var(--c-primary-soft);border-color:var(--c-primary);}

/* 移动抽屉 */
.drawer-overlay{position:fixed;inset:0;background:rgba(14,58,92,.42);opacity:0;visibility:hidden;transition:opacity .28s ease,visibility .28s ease;z-index:95;}
.drawer-overlay.is-open{opacity:1;visibility:visible;}
.mobile-drawer{position:fixed;top:0;right:0;bottom:0;width:84vw;max-width:360px;background:#fff;z-index:100;transform:translateX(102%);transition:transform .3s ease;display:flex;flex-direction:column;box-shadow:-12px 0 40px rgba(16,42,67,.16);}
.mobile-drawer.is-open{transform:translateX(0);}
.drawer-head{display:flex;align-items:center;justify-content:space-between;padding:18px 20px;border-bottom:1px solid var(--c-border);}
.drawer-close{width:38px;height:38px;border-radius:var(--r-btn);border:1px solid var(--c-border);background:#fff;color:var(--c-text);cursor:pointer;font-size:16px;}
.drawer-close:hover{background:var(--c-primary-soft);}
.drawer-nav{padding:16px 12px;overflow-y:auto;flex:1 1 auto;}
.drawer-nav a{display:block;padding:14px 16px;border-radius:var(--r-btn);font-size:16px;font-weight:500;color:var(--c-text);}
.drawer-nav a:hover{background:var(--c-primary-soft);color:var(--c-primary-dark);}
.drawer-nav a.is-active{color:var(--c-primary);background:var(--c-primary-soft);font-weight:600;}
.drawer-foot{padding:16px 20px calc(20px + env(safe-area-inset-bottom));border-top:1px solid var(--c-border);}
.drawer-foot .btn{width:100%;}

/* ---------- 按钮 ---------- */
.btn{display:inline-flex;align-items:center;justify-content:center;gap:8px;padding:13px 24px;border-radius:var(--r-btn);font-size:15px;font-weight:600;line-height:1.2;border:1px solid transparent;cursor:pointer;transition:background .25s ease,color .25s ease,border-color .25s ease,transform .25s ease,box-shadow .25s ease;}
.btn-primary{background:var(--c-primary);color:#fff;box-shadow:0 8px 18px rgba(26,93,143,.22);}
.btn-primary:hover{background:var(--c-primary-dark);color:#fff;transform:translateY(-2px);box-shadow:0 12px 24px rgba(26,93,143,.28);}
.btn-outline{background:#fff;color:var(--c-primary);border-color:var(--c-border);}
.btn-outline:hover{background:var(--c-primary-soft);color:var(--c-primary-dark);border-color:var(--c-primary);transform:translateY(-2px);}
.btn-ghost{background:rgba(255,255,255,.14);color:#fff;border-color:rgba(255,255,255,.4);}
.btn-ghost:hover{background:#fff;color:var(--c-primary-dark);}
.btn-sm{padding:10px 18px;font-size:14px;}
.btn-block{width:100%;}
.text-link{display:inline-flex;align-items:center;gap:6px;font-size:15px;font-weight:600;color:var(--c-primary);}
.text-link::after{content:"\2192";transition:transform .2s ease;}
.text-link:hover::after{transform:translateX(4px);}

/* ---------- 首屏 ---------- */
.hero{position:relative;overflow:hidden;background:linear-gradient(160deg,#F2F8FC 0%,var(--c-bg) 62%);}
.hero-bg{position:absolute;inset:0;background-size:cover;background-position:center right;opacity:.16;pointer-events:none;}
.hero-inner{position:relative;z-index:2;padding-top:82px;padding-bottom:88px;display:grid;grid-template-columns:1.08fr .92fr;gap:56px;align-items:center;}
.hero-badge{display:inline-flex;align-items:center;gap:8px;background:#fff;border:1px solid var(--c-border);border-radius:var(--r-pill);padding:7px 16px;font-size:13px;font-weight:600;color:var(--c-primary-dark);box-shadow:var(--sh-card);margin-bottom:22px;}
.hero-badge i{color:var(--c-accent);}
.hero h1{margin-bottom:20px;}
.hero-lead{font-size:17px;color:var(--c-muted);max-width:560px;margin-bottom:30px;}
.hero-actions{display:flex;flex-wrap:wrap;gap:14px;margin-bottom:34px;}
.trust-bar{display:flex;flex-wrap:wrap;gap:10px;}
.trust-bar li{display:inline-flex;align-items:center;gap:7px;background:#fff;border:1px solid var(--c-border);border-radius:var(--r-badge);padding:8px 14px;font-size:13px;font-weight:500;color:var(--c-primary-dark);}
.trust-bar li::before{content:"";width:6px;height:6px;border-radius:50%;background:var(--c-accent);flex:0 0 auto;}
.hero-media{position:relative;}
.hero-media img{width:100%;aspect-ratio:4/3;object-fit:cover;border-radius:18px;box-shadow:var(--sh-hover);border:1px solid var(--c-border);}
.hero-media::after{content:"";position:absolute;left:-18px;bottom:-18px;width:120px;height:120px;border-radius:22px;background:var(--c-primary-soft);z-index:-1;}

/* ---------- 锚点吸顶条 ---------- */
.anchor-bar{position:sticky;top:72px;z-index:70;background:rgba(255,255,255,.96);backdrop-filter:saturate(160%) blur(6px);border-bottom:1px solid var(--c-border);}
.site-header.is-scrolled ~ .anchor-bar{top:64px;}
.anchor-track{display:flex;gap:6px;overflow-x:auto;padding:10px 0;scrollbar-width:none;}
.anchor-track::-webkit-scrollbar{display:none;}
.anchor-track a{flex:0 0 auto;padding:8px 16px;border-radius:var(--r-pill);font-size:14px;font-weight:500;color:var(--c-muted);border:1px solid transparent;white-space:nowrap;}
.anchor-track a:hover{color:var(--c-primary);background:var(--c-primary-soft);border-color:var(--c-border);}

/* ---------- 卖点交错区 ---------- */
.feature-row{margin-bottom:64px;align-items:center;}
.feature-row:last-child{margin-bottom:0;}
.feature-media img{width:100%;aspect-ratio:16/11;object-fit:cover;border-radius:var(--r-card);border:1px solid var(--c-border);box-shadow:var(--sh-card);}
.feature-copy h3{margin-bottom:14px;}
.feature-copy p{color:var(--c-muted);}
.feature-list{margin:0 0 20px;}
.feature-list li{position:relative;padding:7px 0 7px 26px;color:var(--c-muted);font-size:15px;}
.feature-list li::before{content:"";position:absolute;left:0;top:15px;width:14px;height:14px;border-radius:4px;background:var(--c-primary-soft);border:1px solid var(--c-primary);}
.feature-list li::after{content:"";position:absolute;left:4px;top:19px;width:6px;height:6px;border-radius:2px;background:var(--c-accent);}

/* ---------- 演示时间轴 ---------- */
.timeline{position:relative;display:grid;grid-template-columns:repeat(4,1fr);gap:var(--gap);padding-top:8px;}
.timeline::before{content:"";position:absolute;top:30px;left:12%;right:12%;height:2px;background:var(--c-border);}
.tl-step{position:relative;padding-top:0;}
.tl-dot{position:relative;z-index:2;width:46px;height:46px;border-radius:50%;background:#fff;border:2px solid var(--c-primary);color:var(--c-primary);display:flex;align-items:center;justify-content:center;font-weight:700;font-size:15px;margin-bottom:18px;}
.tl-step h3{font-size:18px;margin-bottom:8px;}
.tl-step p{font-size:15px;color:var(--c-muted);margin:0;}
.tl-step.is-key .tl-dot{background:var(--c-primary);color:#fff;}

/* ---------- 证据区 ---------- */
.stat-bar{display:grid;grid-template-columns:repeat(4,1fr);gap:var(--gap);background:#fff;border:1px solid var(--c-border);border-radius:var(--r-card);padding:34px 32px;box-shadow:var(--sh-card);margin-bottom:48px;}
.stat-num{font-size:clamp(28px,3.4vw,42px);font-weight:700;color:var(--c-primary);line-height:1.1;margin-bottom:8px;}
.stat-label{font-size:14px;color:var(--c-muted);margin:0;}
.proof-card{display:flex;gap:18px;background:#fff;border:1px solid var(--c-border);border-radius:var(--r-card);padding:26px;box-shadow:var(--sh-card);height:100%;transition:transform .25s ease,box-shadow .25s ease;}
.proof-card:hover{transform:translateY(-3px);box-shadow:var(--sh-hover);}
.proof-avatar{flex:0 0 auto;width:56px;height:56px;border-radius:50%;overflow:hidden;border:2px solid var(--c-primary-soft);}
.proof-avatar img{width:100%;height:100%;object-fit:cover;}
.proof-card h3{font-size:17px;margin-bottom:6px;}
.proof-card p{font-size:15px;color:var(--c-muted);margin:0 0 10px;}
.proof-tag{display:inline-block;font-size:13px;font-weight:600;color:var(--c-accent);background:rgba(46,158,131,.1);border-radius:var(--r-badge);padding:4px 10px;}

/* ---------- 服务方案 ---------- */
.plan-card{position:relative;display:flex;flex-direction:column;height:100%;background:#fff;border:1px solid var(--c-border);border-radius:var(--r-card);padding:30px 26px;box-shadow:var(--sh-card);transition:transform .25s ease,box-shadow .25s ease;}
.plan-card:hover{transform:translateY(-3px);box-shadow:var(--sh-hover);}
.plan-card.is-featured{border-top:4px solid var(--c-primary);padding-top:34px;}
.plan-flag{position:absolute;top:-13px;right:22px;background:var(--c-gold);color:#4A3300;font-size:12px;font-weight:700;padding:4px 13px;border-radius:var(--r-pill);}
.plan-name{font-size:18px;font-weight:700;margin-bottom:6px;}
.plan-price{font-size:26px;font-weight:700;color:var(--c-primary-dark);margin-bottom:6px;font-variant-numeric:tabular-nums;}
.plan-note{font-size:14px;color:var(--c-muted);margin-bottom:20px;}
.plan-list{flex:1 1 auto;margin-bottom:22px;}
.plan-list li{display:flex;gap:10px;align-items:flex-start;padding:10px 0;font-size:15px;color:var(--c-muted);border-bottom:1px dashed var(--c-border);}
.plan-list li:last-child{border-bottom:0;}
.plan-list li i{color:var(--c-accent);margin-top:5px;font-size:13px;}

/* ---------- FAQ ---------- */
.faq-list{max-width:900px;margin:0 auto;}
.faq-item{background:#fff;border:1px solid var(--c-border);border-radius:var(--r-card);margin-bottom:12px;overflow:hidden;transition:box-shadow .25s ease;}
.faq-item.is-open{box-shadow:var(--sh-card);}
.faq-q{width:100%;display:flex;align-items:center;justify-content:space-between;gap:18px;min-height:60px;padding:16px 22px;background:transparent;border:0;font-size:16px;font-weight:600;color:var(--c-text);text-align:left;cursor:pointer;}
.faq-q:hover{color:var(--c-primary);}
.faq-icon{flex:0 0 auto;width:28px;height:28px;border-radius:50%;background:var(--c-primary-soft);color:var(--c-primary);display:flex;align-items:center;justify-content:center;font-size:14px;transition:transform .28s ease,background .28s ease,color .28s ease;}
.faq-q[aria-expanded="true"] .faq-icon{transform:rotate(45deg);background:var(--c-primary);color:#fff;}
.faq-a{max-height:0;overflow:hidden;transition:max-height .3s ease;}
.faq-a-inner{padding:0 22px 20px 22px;border-top:1px solid var(--c-border);padding-top:16px;margin:0 22px;color:var(--c-muted);font-size:15px;}
.faq-a-inner{margin:0 22px;padding-left:0;padding-right:0;}

/* ---------- 最新信息（CMS） ---------- */
.posts-grid{margin-bottom:0;}
.post-card{display:flex;flex-direction:column;height:100%;background:var(--c-card);border:1px solid var(--c-border);border-radius:var(--r-card);overflow:hidden;box-shadow:var(--sh-card);transition:transform .25s ease,box-shadow .25s ease;}
.post-card:hover{transform:translateY(-3px);box-shadow:var(--sh-hover);}
.post-cover{position:relative;aspect-ratio:16/9;overflow:hidden;background:var(--c-primary-soft);}
.post-cover img{width:100%;height:100%;object-fit:cover;transition:transform .35s ease;}
.post-card:hover .post-cover img{transform:scale(1.04);}
.post-body{padding:22px 24px 24px;display:flex;flex-direction:column;flex:1 1 auto;}
.post-badge{align-self:flex-start;font-size:12px;font-weight:600;color:var(--c-primary);background:var(--c-primary-soft);border-radius:var(--r-badge);padding:4px 10px;margin-bottom:12px;}
.post-title{display:-webkit-box;-webkit-line-clamp:2;-webkit-box-orient:vertical;overflow:hidden;font-size:17px;font-weight:600;margin:0 0 10px;color:var(--c-text);transition:color .2s ease;}
.post-card:hover .post-title{color:var(--c-primary);}
.post-excerpt{display:-webkit-box;-webkit-line-clamp:3;-webkit-box-orient:vertical;overflow:hidden;font-size:14.5px;color:var(--c-muted);margin:0 0 18px;}
.post-meta{display:flex;align-items:center;justify-content:space-between;gap:10px;margin-top:auto;padding-top:14px;border-top:1px solid var(--c-border);font-size:13px;color:var(--c-muted);}
.post-more{color:var(--c-primary);font-weight:600;}
.empty-state{background:#fff;border:1px dashed var(--c-border);border-radius:var(--r-card);padding:56px 24px;text-align:center;}
.empty-state i{font-size:34px;color:var(--c-primary);opacity:.5;display:block;margin-bottom:14px;}
.empty-state p{color:var(--c-muted);margin-bottom:18px;}

/* ---------- 底部 CTA ---------- */
.cta-block{position:relative;overflow:hidden;background:var(--c-primary-dark);border-radius:20px;padding:56px 48px;color:#fff;}
.cta-bg{position:absolute;inset:0;background-size:cover;background-position:center;opacity:.18;}
.cta-inner{position:relative;z-index:2;display:flex;align-items:center;justify-content:space-between;gap:36px;flex-wrap:wrap;}
.cta-inner h2{color:#fff;margin-bottom:10px;font-size:clamp(24px,3vw,32px);}
.cta-inner p{color:rgba(255,255,255,.82);margin:0;max-width:560px;}
.cta-actions{display:flex;gap:14px;flex-wrap:wrap;}

/* ---------- 浮动 CTA ---------- */
.float-cta{position:fixed;right:28px;bottom:28px;z-index:75;display:inline-flex;align-items:center;gap:10px;background:var(--c-primary);color:#fff;border-radius:var(--r-pill);padding:14px 26px;font-size:15px;font-weight:600;box-shadow:0 14px 30px rgba(14,58,92,.28);opacity:0;visibility:hidden;transform:translateY(12px);transition:opacity .3s ease,transform .3s ease,visibility .3s ease,background .25s ease;}
.float-cta.is-visible{opacity:1;visibility:visible;transform:translateY(0);}
.float-cta:hover{background:var(--c-primary-dark);color:#fff;}

/* ---------- 页脚 ---------- */
.site-footer{background:var(--c-primary-dark);color:#fff;padding-top:72px;margin-top:0;}
.site-footer h4{color:#fff;font-size:15px;font-weight:600;margin-bottom:18px;letter-spacing:.02em;}
.footer-brand{display:flex;align-items:center;gap:10px;margin-bottom:16px;}
.footer-brand .brand-mark{background:rgba(255,255,255,.14);}
.footer-brand span{font-size:17px;font-weight:700;color:#fff;}
.footer-desc{color:rgba(255,255,255,.72);font-size:14.5px;margin:0;}
.footer-links li{margin-bottom:11px;}
.footer-links a{color:rgba(255,255,255,.76);font-size:14.5px;}
.footer-links a:hover{color:var(--c-gold);}
.footer-contact li{display:flex;align-items:center;gap:10px;color:rgba(255,255,255,.76);font-size:14.5px;margin-bottom:12px;}
.footer-contact i{color:var(--c-gold);width:16px;}
.footer-bottom{margin-top:56px;border-top:1px solid rgba(255,255,255,.14);padding:22px 0 26px;display:flex;justify-content:space-between;gap:16px;flex-wrap:wrap;font-size:13.5px;color:rgba(255,255,255,.6);}

/* ---------- 响应式 ---------- */
@media (max-width:1024px){
  :root{--ws:72px;}
  .main-nav{display:none;}
  .header-cta{display:none;}
  .nav-toggle{display:inline-flex;margin-left:auto;}
  .hero-inner{grid-template-columns:1fr;gap:40px;padding-top:60px;padding-bottom:64px;}
  .hero-media{order:-1;}
  .hero-media img{aspect-ratio:16/10;}
  .timeline{grid-template-columns:repeat(2,1fr);gap:32px;}
  .timeline::before{display:none;}
  .stat-bar{grid-template-columns:repeat(2,1fr);gap:28px;}
  .anchor-bar{top:64px;}
}
@media (max-width:768px){
  :root{--ws:56px;--gap:20px;}
  body{padding-bottom:0;}
  .grid-container{padding-left:20px;padding-right:20px;}
  .header-inner{height:64px;}
  .brand-text{font-size:16px;}
  .section-head{margin-bottom:34px;}
  .feature-row{margin-bottom:48px;}
  .feature-row.is-reversed .feature-media{order:-1;}
  .cta-block{padding:40px 26px;border-radius:16px;}
  .stat-bar{padding:26px 22px;}
  .float-cta{left:0;right:0;bottom:0;width:100%;border-radius:0;justify-content:center;padding:16px 20px calc(16px + env(safe-area-inset-bottom));transform:translateY(100%);}
  .float-cta.is-visible{transform:translateY(0);}
  .footer-bottom{flex-direction:column;gap:8px;margin-top:40px;}
  .site-footer{padding-top:56px;}
}
@media (max-width:520px){
  .timeline{grid-template-columns:1fr;}
  .stat-bar{grid-template-columns:1fr;}
  .hero-actions .btn{width:100%;}
  .trust-bar li{font-size:12.5px;}
  .plan-card{padding:26px 22px;}
}

/* roulang page: article */
:root{
  --primary:#1A5D8F;
  --primary-dark:#0E3A5C;
  --primary-light:#E7F0F7;
  --green:#2E9E83;
  --green-deep:#207460;
  --gold:#F2B03D;
  --danger:#D9534F;
  --bg:#F6F9FB;
  --card:#FFFFFF;
  --border:#DCE6EE;
  --text:#16242F;
  --muted:#5B6B77;
  --radius-card:14px;
  --radius-btn:10px;
  --radius-badge:6px;
  --shadow-card:0 2px 4px rgba(16,42,67,.04),0 12px 28px rgba(16,42,67,.08);
  --shadow-hover:0 18px 40px rgba(16,42,67,.12);
  --shadow-header:0 6px 20px rgba(16,42,67,.08);
  --container-max:1200px;
  --font-sans:system-ui,-apple-system,"PingFang SC","Microsoft YaHei","Helvetica Neue",Arial,sans-serif;
}
*,*::before,*::after{box-sizing:border-box}
html{-webkit-text-size-adjust:100%;scroll-behavior:smooth}
body{
  margin:0;
  font-family:var(--font-sans);
  font-size:16.5px;
  line-height:1.75;
  color:var(--text);
  background:var(--bg);
  -webkit-font-smoothing:antialiased;
  text-rendering:optimizeLegibility;
}
img{max-width:100%;display:block;height:auto}
a{color:inherit;text-decoration:none}
button{font-family:inherit}
h1,h2,h3,h4,h5{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}
table{border-collapse:collapse}
.grid-container{max-width:var(--container-max);margin-left:auto;margin-right:auto;padding-left:24px;padding-right:24px}
.num{font-variant-numeric:tabular-nums}

/* ============ header ============ */
.site-header{
  position:sticky;top:0;z-index:60;background:#fff;
  border-bottom:1px solid var(--border);
  transition:box-shadow .25s ease;
}
.site-header.is-scrolled{box-shadow:var(--shadow-header)}
.header-inner{display:flex;align-items:center;gap:28px;height:72px;transition:height .25s ease}
.site-header.is-scrolled .header-inner{height:64px}
.brand{display:flex;align-items:center;gap:10px;flex-shrink:0}
.brand-mark{
  width:36px;height:36px;border-radius:10px;flex-shrink:0;
  background:linear-gradient(135deg,var(--primary) 0%,var(--primary-dark) 100%);
  color:#fff;display:grid;place-items:center;font-weight:700;font-size:17px;
}
.brand-text{font-weight:700;font-size:17px;color:var(--primary-dark);white-space:nowrap}
.main-nav{display:flex;align-items:center;gap:4px;height:100%;margin-left:auto}
.nav-link{
  position:relative;display:inline-flex;align-items:center;height:100%;
  padding:0 14px;font-size:15px;font-weight:500;color:var(--text);
  transition:color .2s ease;
}
.nav-link::after{
  content:'';position:absolute;left:14px;right:14px;bottom:0;height:2px;
  background:var(--primary);transform:scaleX(0);transform-origin:left;
  transition:transform .25s ease;
}
.nav-link:hover{color:var(--primary)}
.nav-link:hover::after{transform:scaleX(1)}
.nav-link.is-active{color:var(--primary);font-weight:600}
.nav-link.is-active::after{transform:scaleX(1)}
.header-actions{display:flex;align-items:center;gap:12px;flex-shrink:0}

/* ============ buttons ============ */
.btn{
  display:inline-flex;align-items:center;justify-content:center;gap:8px;
  height:46px;padding:0 22px;border-radius:var(--radius-btn);
  font-size:15px;font-weight:600;line-height:1;border:1px solid transparent;
  cursor:pointer;text-align:center;
  transition:background .22s ease,color .22s ease,border-color .22s ease,transform .22s ease,box-shadow .22s ease;
}
.btn i{font-size:14px}
.btn-sm{height:38px;padding:0 16px;font-size:14px}
.btn-primary{background:var(--primary);color:#fff}
.btn-primary:hover{background:var(--primary-dark);color:#fff;transform:translateY(-1px);box-shadow:0 10px 22px rgba(26,93,143,.24)}
.btn-ghost{background:#fff;color:var(--primary);border-color:var(--border)}
.btn-ghost:hover{background:var(--primary-light);border-color:#C6DBEA;color:var(--primary-dark)}
.btn-light{background:#fff;color:var(--primary-dark)}
.btn-light:hover{background:var(--primary-light);color:var(--primary-dark);transform:translateY(-1px)}
.btn-outline-light{background:transparent;color:#fff;border-color:rgba(255,255,255,.45)}
.btn-outline-light:hover{background:rgba(255,255,255,.14);border-color:#fff;color:#fff}
a:focus-visible,button:focus-visible,.btn:focus-visible{
  outline:3px solid rgba(26,93,143,.35);outline-offset:2px;border-radius:var(--radius-btn);
}

/* ============ mobile nav ============ */
.nav-toggle{
  display:none;width:42px;height:42px;border-radius:10px;border:1px solid var(--border);
  background:#fff;cursor:pointer;flex-direction:column;align-items:center;justify-content:center;gap:5px;
}
.nav-toggle span{display:block;width:18px;height:2px;border-radius:2px;background:var(--primary-dark);transition:transform .2s ease}
.drawer-mask{
  position:fixed;inset:0;background:rgba(14,42,66,.45);z-index:80;
  opacity:0;pointer-events:none;transition:opacity .3s ease;
}
.drawer-mask.is-open{opacity:1;pointer-events:auto}
.mobile-drawer{
  position:fixed;top:0;right:0;height:100%;width:84vw;max-width:340px;z-index:90;
  background:#fff;display:flex;flex-direction:column;
  transform:translateX(100%);transition:transform .32s ease;
  box-shadow:-12px 0 40px rgba(16,42,67,.16);
}
.mobile-drawer.is-open{transform:translateX(0)}
.drawer-head{display:flex;align-items:center;justify-content:space-between;padding:16px 20px;border-bottom:1px solid var(--border)}
.drawer-title{font-weight:700;color:var(--primary-dark);font-size:16px}
.drawer-close{width:36px;height:36px;border-radius:9px;border:1px solid var(--border);background:#fff;color:var(--primary-dark);cursor:pointer}
.drawer-body{flex:1;overflow-y:auto;padding:12px 10px}
.drawer-link{display:block;padding:14px 16px;border-radius:10px;font-size:16px;font-weight:500;color:var(--text);transition:background .2s ease,color .2s ease}
.drawer-link:hover{background:var(--primary-light);color:var(--primary)}
.drawer-link.is-active{background:var(--primary-light);color:var(--primary);font-weight:600}
.drawer-foot{padding:16px 20px calc(18px + env(safe-area-inset-bottom));border-top:1px solid var(--border)}
.drawer-foot .btn{width:100%}

/* ============ breadcrumb / badge ============ */
.breadcrumb{display:flex;flex-wrap:wrap;align-items:center;gap:8px;font-size:14px;color:var(--muted)}
.breadcrumb a{color:var(--muted);transition:color .2s ease}
.breadcrumb a:hover{color:var(--primary)}
.breadcrumb .sep{color:#B6C6D3}
.breadcrumb .current{color:var(--primary);font-weight:600;max-width:100%;overflow:hidden;text-overflow:ellipsis;white-space:nowrap}
.badge{
  display:inline-flex;align-items:center;gap:6px;border-radius:var(--radius-badge);
  padding:5px 11px;font-size:13px;font-weight:600;line-height:1.4;
}
.badge-primary{background:var(--primary-light);color:var(--primary-dark)}
.badge-soft{background:#EDF3F8;color:var(--primary)}
.badge-green{background:rgba(46,158,131,.13);color:var(--green-deep)}

/* ============ article hero ============ */
.article-hero{
  padding:30px 0 46px;
  border-bottom:1px solid var(--border);
  background:linear-gradient(165deg,#F1F8FC 0%,#F6F9FB 52%,#FFFFFF 100%);
}
.article-channel{display:flex;align-items:center;gap:12px;flex-wrap:wrap;margin-top:22px}
.channel-note{font-size:14px;color:var(--muted)}
.article-title{
  margin-top:16px;max-width:920px;
  font-size:clamp(26px,3.6vw,40px);line-height:1.26;color:var(--primary-dark);
}
.article-meta{display:flex;flex-wrap:wrap;align-items:center;gap:14px;margin-top:20px;font-size:14px;color:var(--muted)}
.article-meta span{display:inline-flex;align-items:center;gap:6px}
.article-meta i{color:var(--primary);font-size:13px}
.article-meta .meta-dot{width:4px;height:4px;border-radius:50%;background:#C2D2DF;display:inline-block}

/* ============ article body ============ */
.article-section{padding:54px 0 32px}
.article-shell{max-width:800px;margin:0 auto}
.article-body{
  background:#fff;border:1px solid var(--border);border-radius:var(--radius-card);
  padding:46px 48px;box-shadow:var(--shadow-card);
  font-size:17px;line-height:1.9;color:var(--text);
  overflow-wrap:break-word;word-break:break-word;
}
.article-body > * + *{margin-top:20px}
.article-body h2{
  font-size:26px;line-height:1.42;margin-top:42px;color:var(--primary-dark);
  padding-left:14px;border-left:4px solid var(--primary);
}
.article-body h3{font-size:21px;line-height:1.45;margin-top:32px;color:var(--primary-dark)}
.article-body h4{font-size:18px;line-height:1.5;margin-top:26px;color:var(--text)}
.article-body p{line-height:1.92}
.article-body strong{font-weight:700;color:var(--primary-dark)}
.article-body ul{padding-left:0;list-style:none}
.article-body ul li{position:relative;padding-left:22px;margin-top:10px;line-height:1.85}
.article-body ul li::before{
  content:'';position:absolute;left:4px;top:.78em;width:7px;height:7px;border-radius:50%;
  background:var(--primary);opacity:.6;
}
.article-body ol{list-style:decimal;padding-left:24px}
.article-body ol li{margin-top:10px;padding-left:4px;line-height:1.85}
.article-body blockquote{
  margin:28px 0;padding:18px 22px;border-radius:0 12px 12px 0;
  background:var(--primary-light);border-left:3px solid var(--primary);color:var(--primary-dark);
}
.article-body blockquote p{margin:0;font-size:16px;line-height:1.8}
.article-body img{border-radius:12px;margin:28px auto;box-shadow:0 8px 24px rgba(16,42,67,.08);object-fit:cover}
.article-body figure{margin:28px 0}
.article-body figcaption{font-size:13.5px;color:var(--muted);text-align:center;margin-top:10px;line-height:1.6}
.article-body a{color:var(--primary);text-decoration:underline;text-underline-offset:3px;text-decoration-color:rgba(26,93,143,.35)}
.article-body a:hover{text-decoration-color:var(--primary);color:var(--primary-dark)}
.article-body table{
  width:100%;font-size:15px;margin:26px 0;border:1px solid var(--border);
  border-radius:10px;overflow:hidden;
}
.article-body th,.article-body td{padding:12px 14px;border-bottom:1px solid var(--border);text-align:left;line-height:1.7}
.article-body thead th{background:var(--primary-light);color:var(--primary-dark);font-weight:600}
.article-body tbody tr:nth-child(even){background:#FAFCFE}
.article-body tbody tr:last-child td{border-bottom:none}
.article-body code{background:#EEF4F9;padding:2px 6px;border-radius:5px;font-size:.92em;color:var(--primary-dark)}
.article-body pre{background:var(--primary-dark);color:#E6F0F7;padding:18px 20px;border-radius:12px;overflow-x:auto;font-size:14px;line-height:1.7}
.article-body pre code{background:none;color:inherit;padding:0}
.article-body hr{border:none;border-top:1px solid var(--border);margin:34px 0}

.empty-state{text-align:center;padding:56px 20px}
.empty-state .empty-icon{font-size:40px;color:#C2D2DF}
.empty-state h2{margin-top:18px;font-size:22px;color:var(--primary-dark);border:none;padding:0}
.empty-state p{margin-top:10px;font-size:15px;color:var(--muted)}
.empty-state .btn{margin-top:24px}

/* ============ end CTA ============ */
.article-cta-section{padding:14px 0 74px}
.cta-bar{
  background:var(--primary-dark);border-radius:18px;padding:34px 38px;
  display:flex;align-items:center;justify-content:space-between;gap:28px;
  box-shadow:0 20px 44px rgba(14,58,92,.22);color:#fff;
}
.cta-bar h2{font-size:24px;color:#fff;line-height:1.38}
.cta-bar p{margin-top:10px;font-size:15px;line-height:1.75;color:rgba(255,255,255,.76);max-width:560px}
.cta-bar-actions{display:flex;gap:12px;flex-wrap:wrap;flex-shrink:0}

/* ============ related ============ */
.related-section{padding:0 0 76px}
.section-head{display:flex;align-items:flex-end;justify-content:space-between;gap:20px;margin-bottom:26px;flex-wrap:wrap}
.section-head h2{font-size:28px;color:var(--primary-dark);line-height:1.35}
.section-head .sec-note{font-size:14px;color:var(--muted);margin-top:8px}
.text-link{display:inline-flex;align-items:center;gap:6px;color:var(--primary);font-weight:600;font-size:15px;transition:color .2s ease}
.text-link i{transition:transform .22s ease}
.text-link:hover{text-decoration:underline;text-underline-offset:4px;color:var(--primary-dark)}
.text-link:hover i{transform:translateX(4px)}
.news-card{
  display:flex;flex-direction:column;height:100%;background:#fff;
  border:1px solid var(--border);border-radius:var(--radius-card);overflow:hidden;
  box-shadow:var(--shadow-card);
  transition:transform .25s ease,box-shadow .25s ease;
}
.news-card:hover{transform:translateY(-3px);box-shadow:var(--shadow-hover)}
.news-cover{position:relative;aspect-ratio:16/9;overflow:hidden;background:#EAF1F7}
.news-cover img{width:100%;height:100%;object-fit:cover;transition:transform .45s ease}
.news-card:hover .news-cover img{transform:scale(1.04)}
.news-body{padding:22px 24px 22px;display:flex;flex-direction:column;flex:1}
.news-title{
  margin-top:12px;font-size:18px;line-height:1.5;color:var(--text);
  display:-webkit-box;-webkit-line-clamp:2;-webkit-box-orient:vertical;overflow:hidden;
  transition:color .2s ease;
}
.news-card:hover .news-title{color:var(--primary)}
.news-excerpt{
  margin-top:10px;font-size:14.5px;line-height:1.7;color:var(--muted);
  display:-webkit-box;-webkit-line-clamp:3;-webkit-box-orient:vertical;overflow:hidden;
}
.news-foot{
  margin-top:auto;padding-top:16px;border-top:1px solid #EEF3F8;
  display:flex;align-items:center;justify-content:space-between;gap:10px;
  font-size:13px;color:var(--muted);
}
.related-cell{margin-bottom:24px}
.back-entry{
  margin-top:16px;padding-top:24px;border-top:1px solid var(--border);
  display:flex;align-items:center;justify-content:space-between;gap:16px;flex-wrap:wrap;
}

/* ============ float CTA ============ */
.float-cta{
  position:fixed;right:28px;bottom:28px;z-index:70;
  display:inline-flex;align-items:center;gap:8px;height:50px;padding:0 24px;
  border-radius:999px;background:var(--primary);color:#fff;font-weight:600;font-size:15px;
  box-shadow:0 12px 30px rgba(26,93,143,.32);
  opacity:0;transform:translateY(14px);pointer-events:none;
  transition:opacity .3s ease,transform .3s ease,background .2s ease;
}
.float-cta.is-visible{opacity:1;transform:translateY(0);pointer-events:auto}
.float-cta:hover{background:var(--primary-dark);color:#fff}
.mobile-cta-bar{
  position:fixed;left:0;right:0;bottom:0;z-index:70;display:none;
  grid-template-columns:1fr 1fr;gap:10px;
  padding:8px 16px calc(8px + env(safe-area-inset-bottom));
  background:#fff;border-top:1px solid var(--border);
  box-shadow:0 -8px 24px rgba(16,42,67,.1);
  transform:translateY(115%);transition:transform .3s ease;
}
.mobile-cta-bar.is-visible{transform:translateY(0)}
.mobile-cta-bar .btn{height:44px;width:100%;padding:0 10px;font-size:14px}

/* ============ footer ============ */
.site-footer{background:var(--primary-dark);color:#fff;padding:64px 0 0}
.footer-brand{display:flex;align-items:center;gap:10px;font-weight:700;font-size:17px;color:#fff;margin-bottom:14px}
.site-footer .brand-mark{background:rgba(255,255,255,.14);width:34px;height:34px;font-size:16px;border-radius:10px}
.footer-desc{font-size:14px;line-height:1.8;color:rgba(255,255,255,.7);max-width:320px}
.site-footer h4{font-size:15px;color:#fff;margin-bottom:16px;font-weight:600}
.footer-links li{margin-bottom:10px}
.footer-links a{font-size:14px;color:rgba(255,255,255,.72);transition:color .2s ease}
.footer-links a:hover{color:var(--gold)}
.footer-contact li{display:flex;align-items:center;gap:8px;font-size:14px;color:rgba(255,255,255,.72);margin-bottom:10px}
.footer-contact i{color:#7FB0D4;width:16px;text-align:center}
.footer-bottom{
  margin-top:16px;padding:20px 0 28px;border-top:1px solid rgba(255,255,255,.12);
  display:flex;justify-content:space-between;gap:12px;flex-wrap:wrap;
  font-size:13px;color:rgba(255,255,255,.55);
}

/* ============ responsive ============ */
@media (max-width:1023px){
  .main-nav{display:none}
  .header-actions .btn{display:none}
  .nav-toggle{display:flex}
  .float-cta{display:none}
  .mobile-cta-bar{display:grid}
  .header-inner{height:64px}
  .article-hero{padding:24px 0 38px}
  .article-body{padding:32px 26px}
  .article-section{padding:40px 0 26px}
  .cta-bar{flex-direction:column;align-items:flex-start;padding:28px 24px}
  .cta-bar-actions{width:100%}
  .cta-bar-actions .btn{flex:1}
}
@media (max-width:639px){
  .grid-container{padding-left:20px;padding-right:20px}
  body{font-size:16px}
  .brand-text{font-size:15.5px}
  .article-title{font-size:24px}
  .article-body{padding:26px 20px;font-size:16px}
  .article-body h2{font-size:22px;margin-top:34px}
  .article-body h3{font-size:19px}
  .article-body table{font-size:14px;display:block;overflow-x:auto;white-space:nowrap}
  .section-head h2{font-size:23px}
  .cta-bar h2{font-size:20px}
  .related-section{padding-bottom:96px}
  .back-entry{flex-direction:column;align-items:flex-start}
}
@media (min-width:1440px){
  .grid-container{padding-left:40px;padding-right:40px}
}

/* roulang page: category1 */
:root{
  --primary:#1A5D8F;
  --primary-dark:#0E3A5C;
  --primary-soft:#E7F0F7;
  --accent:#2E9E83;
  --gold:#F2B03D;
  --bg:#F6F9FB;
  --card:#FFFFFF;
  --border:#DCE6EE;
  --text:#16242F;
  --muted:#5B6B77;
  --danger:#D9534F;
  --radius-card:14px;
  --radius-btn:10px;
  --radius-badge:6px;
  --shadow-1:0 2px 4px rgba(16,42,67,.04), 0 12px 28px rgba(16,42,67,.08);
  --shadow-2:0 18px 40px rgba(16,42,67,.12);
  --container:1200px;
  --space-xs:8px;
  --space-sm:16px;
  --space-md:24px;
  --space-lg:40px;
  --space-xl:64px;
  --section-y:96px;
  --font:system-ui,-apple-system,"PingFang SC","Microsoft YaHei","Helvetica Neue",Arial,sans-serif;
}

*,*::before,*::after{box-sizing:border-box;}

html{-webkit-text-size-adjust:100%;scroll-behavior:smooth;}

body{
  margin:0;
  padding:0;
  font-family:var(--font);
  font-size:16.5px;
  line-height:1.75;
  color:var(--text);
  background:var(--bg);
  letter-spacing:0;
  -webkit-font-smoothing:antialiased;
}

img{max-width:100%;height:auto;display:block;}
a{color:var(--primary);text-decoration:none;transition:color .25s ease;}
a:hover{color:var(--primary-dark);}
button{font-family:inherit;}
ul,ol{margin:0;padding:0;list-style:none;}
h1,h2,h3,h4{margin:0;font-weight:700;letter-spacing:-0.01em;line-height:1.28;color:var(--text);}
p{margin:0;}
table{border-collapse:collapse;width:100%;}

:focus-visible{
  outline:3px solid rgba(26,93,143,.35);
  outline-offset:2px;
  border-radius:4px;
}

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

.num{font-variant-numeric:tabular-nums;font-feature-settings:"tnum";}

/* ============ 按钮 ============ */
.btn{
  display:inline-flex;
  align-items:center;
  justify-content:center;
  gap:8px;
  padding:13px 26px;
  font-size:15.5px;
  font-weight:600;
  line-height:1.2;
  border-radius:var(--radius-btn);
  border:1px solid transparent;
  cursor:pointer;
  transition:background-color .25s ease,color .25s ease,border-color .25s ease,transform .25s ease,box-shadow .25s ease;
  white-space:nowrap;
}
.btn-primary{
  background:var(--primary);
  color:#fff;
  box-shadow:0 8px 18px rgba(26,93,143,.22);
}
.btn-primary:hover{background:var(--primary-dark);color:#fff;transform:translateY(-2px);box-shadow:0 12px 24px rgba(14,58,92,.26);}
.btn-primary:active{transform:translateY(0);}
.btn-ghost{
  background:#fff;
  color:var(--primary);
  border-color:var(--border);
  box-shadow:0 2px 4px rgba(16,42,67,.05);
}
.btn-ghost:hover{background:var(--primary-soft);color:var(--primary-dark);border-color:#c4d8e6;}
.btn-sm{padding:10px 18px;font-size:14.5px;}

.link-arrow{
  display:inline-flex;
  align-items:center;
  gap:6px;
  font-weight:600;
  font-size:15px;
  color:var(--primary);
  border-bottom:1px solid transparent;
  transition:border-color .25s ease,gap .25s ease,color .25s ease;
}
.link-arrow i{transition:transform .25s ease;font-size:12px;}
.link-arrow:hover{border-bottom-color:var(--primary);gap:10px;color:var(--primary-dark);}
.link-arrow:hover i{transform:translateX(3px);}

/* ============ 徽章 / 标签 ============ */
.badge{
  display:inline-flex;
  align-items:center;
  gap:6px;
  padding:5px 12px;
  border-radius:var(--radius-badge);
  font-size:13px;
  font-weight:600;
  line-height:1.5;
  background:var(--primary-soft);
  color:var(--primary-dark);
}
.badge-accent{background:rgba(46,158,131,.12);color:#1f7a65;}
.badge-gold{background:rgba(242,176,61,.16);color:#8a5d05;}

.eyebrow{
  display:inline-block;
  font-size:13px;
  font-weight:700;
  letter-spacing:.12em;
  text-transform:uppercase;
  color:var(--primary);
  margin-bottom:14px;
}

.section-title{font-size:clamp(24px,2.6vw,32px);}
.section-sub{color:var(--muted);font-size:15.5px;margin-top:12px;}

/* ============ 顶部导航 ============ */
.site-header{
  position:sticky;
  top:0;
  z-index:80;
  background:#fff;
  border-bottom:1px solid var(--border);
  transition:box-shadow .25s ease;
}
.site-header.is-scrolled{box-shadow:0 6px 20px rgba(16,42,67,.08);}
.nav-inner{
  display:flex;
  align-items:center;
  justify-content:space-between;
  gap:24px;
  height:72px;
  transition:height .25s ease;
}
.site-header.is-scrolled .nav-inner{height:64px;}

.brand{
  display:inline-flex;
  align-items:center;
  gap:10px;
  font-weight:700;
  font-size:17px;
  color:var(--text);
  letter-spacing:-0.01em;
}
.brand:hover{color:var(--primary-dark);}
.brand-mark{
  display:inline-flex;
  align-items:center;
  justify-content:center;
  width:36px;
  height:36px;
  border-radius:10px;
  background:linear-gradient(140deg,var(--primary),var(--primary-dark));
  color:#fff;
  font-size:17px;
  font-weight:700;
  flex:0 0 auto;
}
.brand-text{white-space:nowrap;}

.main-nav{display:flex;align-items:center;gap:6px;}
.nav-link{
  position:relative;
  display:inline-block;
  padding:10px 14px;
  font-size:15.5px;
  font-weight:500;
  color:var(--text);
  border-radius:8px;
  transition:color .2s ease,background-color .2s ease;
}
.nav-link:hover{color:var(--primary);background:var(--primary-soft);}
.nav-link.is-active{color:var(--primary);font-weight:600;}
.nav-link.is-active::after{
  content:"";
  position:absolute;
  left:14px;
  right:14px;
  bottom:2px;
  height:2px;
  border-radius:2px;
  background:var(--primary);
}

.nav-actions{display:flex;align-items:center;gap:12px;}
.nav-toggle{
  display:none;
  width:44px;
  height:44px;
  border:1px solid var(--border);
  border-radius:10px;
  background:#fff;
  color:var(--primary-dark);
  font-size:18px;
  cursor:pointer;
  align-items:center;
  justify-content:center;
}
.nav-toggle:hover{background:var(--primary-soft);}

.drawer{
  position:fixed;
  top:0;
  right:0;
  width:84vw;
  max-width:360px;
  height:100%;
  background:#fff;
  z-index:100;
  transform:translateX(105%);
  transition:transform .3s ease;
  display:flex;
  flex-direction:column;
  box-shadow:-12px 0 40px rgba(16,42,67,.16);
}
.drawer.is-open{transform:translateX(0);}
.drawer-head{
  display:flex;
  align-items:center;
  justify-content:space-between;
  padding:18px 20px;
  border-bottom:1px solid var(--border);
}
.drawer-close{
  width:40px;height:40px;border-radius:10px;border:1px solid var(--border);
  background:#fff;color:var(--primary-dark);font-size:17px;cursor:pointer;
}
.drawer-body{padding:18px 20px;overflow-y:auto;flex:1;}
.drawer-nav{display:flex;flex-direction:column;gap:6px;}
.drawer-nav .nav-link{padding:14px 12px;font-size:16px;border-radius:10px;}
.drawer-nav .nav-link.is-active{background:var(--primary-soft);}
.drawer-foot{
  padding:16px 20px calc(16px + env(safe-area-inset-bottom));
  border-top:1px solid var(--border);
}
.drawer-foot .btn{width:100%;}
.drawer-mask{
  position:fixed;
  inset:0;
  background:rgba(14,58,92,.42);
  opacity:0;
  visibility:hidden;
  transition:opacity .3s ease,visibility .3s ease;
  z-index:90;
}
.drawer-mask.is-open{opacity:1;visibility:visible;}

/* ============ 面包屑 ============ */
.breadcrumb{
  display:flex;
  flex-wrap:wrap;
  align-items:center;
  gap:8px;
  font-size:13.5px;
  color:var(--muted);
  padding-top:26px;
}
.breadcrumb a{color:var(--muted);}
.breadcrumb a:hover{color:var(--primary);}
.breadcrumb .sep{color:#a9b8c4;}
.breadcrumb .current{color:var(--primary);font-weight:600;}

/* ============ 分类 Hero ============ */
.cat-hero{
  position:relative;
  background:
    linear-gradient(115deg,rgba(246,249,251,.96) 0%,rgba(231,240,247,.86) 58%,rgba(246,249,251,.94) 100%),
    url("/assets/images/backpic/back-2.webp") center/cover no-repeat;
  border-bottom:1px solid var(--border);
  padding-bottom:56px;
}
.cat-hero-inner{max-width:840px;padding-top:34px;}
.cat-hero h1{
  font-size:clamp(30px,4.4vw,48px);
  margin-bottom:18px;
}
.cat-hero .lead{
  font-size:17px;
  color:var(--muted);
  max-width:720px;
  line-height:1.85;
}
.cat-hero-meta{display:flex;flex-wrap:wrap;gap:10px;margin-top:26px;}

.anchor-bar{
  margin-top:34px;
  display:flex;
  flex-wrap:wrap;
  gap:10px;
}
.anchor-bar a{
  display:inline-flex;
  align-items:center;
  gap:8px;
  padding:9px 18px;
  border-radius:999px;
  background:#fff;
  border:1px solid var(--border);
  font-size:14.5px;
  font-weight:600;
  color:var(--primary-dark);
  box-shadow:0 2px 4px rgba(16,42,67,.04);
  transition:background-color .25s ease,color .25s ease,transform .25s ease,border-color .25s ease;
}
.anchor-bar a:hover{background:var(--primary);border-color:var(--primary);color:#fff;transform:translateY(-2px);}

/* ============ 分栏正文区 ============ */
.cat-main{padding:var(--section-y) 0;}
.toc-col{position:relative;}
.toc-card{
  position:sticky;
  top:96px;
  background:#fff;
  border:1px solid var(--border);
  border-radius:var(--radius-card);
  box-shadow:var(--shadow-1);
  padding:24px 22px;
}
.toc-card h2{
  font-size:15px;
  font-weight:700;
  letter-spacing:.04em;
  color:var(--muted);
  margin-bottom:14px;
}
.toc-list{display:flex;flex-direction:column;gap:2px;}
.toc-list a{
  display:block;
  padding:9px 12px;
  border-radius:8px;
  font-size:14.8px;
  color:var(--text);
  border-left:2px solid transparent;
  transition:background-color .2s ease,color .2s ease,border-color .2s ease;
}
.toc-list a:hover{background:var(--primary-soft);color:var(--primary-dark);border-left-color:var(--primary);}
.toc-sep{height:1px;background:var(--border);margin:18px 0;}
.toc-note{font-size:13.5px;color:var(--muted);line-height:1.7;}

.article-body{max-width:820px;}
.article-body h2{
  font-size:clamp(22px,2.4vw,28px);
  margin:0 0 16px;
  padding-top:8px;
}
.article-body h2:not(:first-child){margin-top:52px;}
.article-body h3{
  font-size:20px;
  margin:32px 0 12px;
  font-weight:600;
}
.article-body p{
  font-size:16.5px;
  line-height:1.9;
  color:#20323f;
  margin-bottom:18px;
}
.article-body strong{color:var(--primary-dark);font-weight:600;}

.rich-list{margin:0 0 22px;}
.rich-list li{
  position:relative;
  padding-left:26px;
  margin-bottom:12px;
  font-size:16.3px;
  line-height:1.85;
  color:#20323f;
}
.rich-list li::before{
  content:"";
  position:absolute;
  left:6px;
  top:12px;
  width:7px;
  height:7px;
  border-radius:50%;
  background:var(--accent);
}
.rich-list.is-ordered{counter-reset:step;}
.rich-list.is-ordered li{padding-left:38px;counter-increment:step;}
.rich-list.is-ordered li::before{
  content:counter(step);
  left:0;
  top:4px;
  width:24px;
  height:24px;
  border-radius:50%;
  background:var(--primary-soft);
  color:var(--primary-dark);
  font-size:13px;
  font-weight:700;
  display:flex;
  align-items:center;
  justify-content:center;
  font-variant-numeric:tabular-nums;
}

.quote-block{
  border-left:3px solid var(--primary);
  background:var(--primary-soft);
  border-radius:0 12px 12px 0;
  padding:18px 22px;
  margin:26px 0;
}
.quote-block p{
  margin:0;
  font-size:15.8px;
  color:var(--primary-dark);
  line-height:1.85;
}

.figure-block{margin:28px 0;}
.figure-block img{
  width:100%;
  aspect-ratio:16/9;
  object-fit:cover;
  border-radius:var(--radius-card);
  border:1px solid var(--border);
  box-shadow:var(--shadow-1);
}
.figure-block figcaption{
  margin-top:12px;
  font-size:13.5px;
  color:var(--muted);
  text-align:center;
}

.table-wrap{
  border:1px solid var(--border);
  border-radius:var(--radius-card);
  overflow:hidden;
  margin:24px 0 30px;
  background:#fff;
}
.table-wrap table{font-size:15.2px;}
.table-wrap th{
  background:var(--primary-soft);
  color:var(--primary-dark);
  font-weight:600;
  text-align:left;
  padding:14px 18px;
  border-bottom:1px solid var(--border);
  white-space:nowrap;
}
.table-wrap td{
  padding:14px 18px;
  border-bottom:1px solid #EDF3F8;
  color:#20323f;
  line-height:1.7;
  vertical-align:top;
}
.table-wrap tbody tr:nth-child(even){background:#FAFCFE;}
.table-wrap tbody tr:last-child td{border-bottom:none;}

/* ============ 卡片组 ============ */
.cat-cards{padding:0 0 var(--section-y);}
.card-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:24px;margin-top:36px;}
.info-card{
  display:flex;
  flex-direction:column;
  background:var(--card);
  border:1px solid var(--border);
  border-radius:var(--radius-card);
  overflow:hidden;
  box-shadow:var(--shadow-1);
  transition:transform .25s ease,box-shadow .25s ease;
}
.info-card:hover{transform:translateY(-3px);box-shadow:var(--shadow-2);}
.info-card .thumb{position:relative;overflow:hidden;}
.info-card .thumb img{
  width:100%;
  aspect-ratio:16/9;
  object-fit:cover;
  transition:transform .4s ease;
}
.info-card:hover .thumb img{transform:scale(1.04);}
.info-card .body{padding:24px;display:flex;flex-direction:column;flex:1;}
.info-card h3{font-size:19px;margin-bottom:10px;transition:color .25s ease;}
.info-card:hover h3{color:var(--primary);}
.info-card p{font-size:15px;color:var(--muted);line-height:1.8;margin-bottom:16px;}
.info-card .card-foot{margin-top:auto;display:flex;align-items:center;justify-content:space-between;gap:12px;}
.info-card .meta{font-size:13px;color:var(--muted);}

/* ============ FAQ ============ */
.faq-section{padding:0 0 var(--section-y);}
.faq-panel{
  background:#fff;
  border:1px solid var(--border);
  border-radius:var(--radius-card);
  box-shadow:var(--shadow-1);
  overflow:hidden;
  margin-top:36px;
}
.faq-item + .faq-item{border-top:1px solid var(--border);}
.faq-q{
  width:100%;
  display:flex;
  align-items:center;
  justify-content:space-between;
  gap:20px;
  padding:20px 26px;
  min-height:62px;
  background:transparent;
  border:0;
  text-align:left;
  font-size:16.5px;
  font-weight:600;
  color:var(--text);
  cursor:pointer;
  transition:background-color .2s ease,color .2s ease;
}
.faq-q:hover{background:#FAFCFE;color:var(--primary);}
.faq-item.is-open .faq-q{color:var(--primary);}
.faq-icon{
  flex:0 0 auto;
  width:26px;
  height:26px;
  display:flex;
  align-items:center;
  justify-content:center;
  border-radius:50%;
  background:var(--primary-soft);
  color:var(--primary-dark);
  font-size:16px;
  font-weight:600;
  line-height:1;
  transition:transform .28s ease,background-color .28s ease,color .28s ease;
}
.faq-item.is-open .faq-icon{transform:rotate(45deg);background:var(--primary);color:#fff;}
.faq-a{
  display:grid;
  grid-template-rows:0fr;
  transition:grid-template-rows .3s ease;
}
.faq-item.is-open .faq-a{grid-template-rows:1fr;}
.faq-a-inner{overflow:hidden;}
.faq-a-inner p{
  padding:0 26px 22px 38px;
  margin:0;
  font-size:15.4px;
  line-height:1.85;
  color:var(--muted);
  border-top:1px solid #EDF3F8;
  padding-top:16px;
}

/* ============ 底部 CTA ============ */
.cta-section{padding:0 0 var(--section-y);}
.cta-panel{
  position:relative;
  overflow:hidden;
  background:linear-gradient(120deg,var(--primary-dark) 0%,#164E77 55%,#1A5D8F 100%);
  border-radius:20px;
  padding:56px 48px;
  color:#fff;
  display:flex;
  align-items:center;
  justify-content:space-between;
  gap:36px;
  flex-wrap:wrap;
}
.cta-panel::after{
  content:"";
  position:absolute;
  right:-80px;
  top:-80px;
  width:320px;
  height:320px;
  border-radius:50%;
  background:rgba(255,255,255,.06);
  pointer-events:none;
}
.cta-text{max-width:620px;position:relative;z-index:1;}
.cta-text h2{color:#fff;font-size:clamp(23px,2.4vw,30px);margin-bottom:14px;}
.cta-text p{color:rgba(255,255,255,.82);font-size:15.8px;line-height:1.85;}
.cta-actions{display:flex;gap:14px;flex-wrap:wrap;position:relative;z-index:1;}
.cta-actions .btn-primary{background:#fff;color:var(--primary-dark);box-shadow:0 10px 24px rgba(0,0,0,.18);}
.cta-actions .btn-primary:hover{background:var(--primary-soft);color:var(--primary-dark);}
.cta-actions .btn-ghost{background:transparent;color:#fff;border-color:rgba(255,255,255,.5);box-shadow:none;}
.cta-actions .btn-ghost:hover{background:rgba(255,255,255,.14);color:#fff;border-color:#fff;}

/* ============ 浮动 CTA ============ */
.float-cta{
  position:fixed;
  right:28px;
  bottom:28px;
  z-index:70;
  display:inline-flex;
  align-items:center;
  gap:10px;
  padding:15px 28px;
  border-radius:999px;
  background:var(--primary);
  color:#fff;
  font-size:15.5px;
  font-weight:600;
  box-shadow:0 14px 32px rgba(14,58,92,.32);
  opacity:0;
  visibility:hidden;
  transform:translateY(14px);
  transition:opacity .3s ease,transform .3s ease,visibility .3s ease,background-color .25s ease;
}
.float-cta.is-visible{opacity:1;visibility:visible;transform:translateY(0);}
.float-cta:hover{background:var(--primary-dark);color:#fff;}

/* ============ 页脚 ============ */
.site-footer{
  background:var(--primary-dark);
  color:#fff;
  padding:72px 0 0;
  margin-top:0;
}
.site-footer h4{
  color:#fff;
  font-size:15px;
  font-weight:600;
  letter-spacing:.04em;
  margin-bottom:18px;
}
.footer-brand{
  display:flex;
  align-items:center;
  gap:10px;
  font-size:17px;
  font-weight:700;
  color:#fff;
  margin-bottom:16px;
}
.footer-brand .brand-mark{
  background:rgba(255,255,255,.14);
  color:#fff;
}
.footer-desc{
  font-size:14.2px;
  line-height:1.85;
  color:rgba(255,255,255,.72);
  max-width:300px;
}
.footer-links,.footer-contact{display:flex;flex-direction:column;gap:12px;}
.footer-links a,.footer-contact li{
  font-size:14.4px;
  color:rgba(255,255,255,.76);
  transition:color .25s ease,padding-left .25s ease;
}
.footer-links a:hover{color:var(--gold);padding-left:4px;}
.footer-contact li{display:flex;align-items:center;gap:10px;}
.footer-contact i{color:rgba(255,255,255,.55);width:16px;text-align:center;}
.footer-bottom{
  margin-top:56px;
  border-top:1px solid rgba(255,255,255,.16);
  padding:22px 0 26px;
  display:flex;
  align-items:center;
  justify-content:space-between;
  gap:14px;
  flex-wrap:wrap;
  font-size:13.4px;
  color:rgba(255,255,255,.62);
}

/* ============ 响应式 ============ */
@media (max-width:1024px){
  .main-nav{display:none;}
  .nav-toggle{display:inline-flex;}
  .nav-actions .btn-sm{display:none;}
  :root{--section-y:72px;}
  .card-grid{grid-template-columns:repeat(2,1fr);}
  .toc-card{position:static;margin-bottom:32px;}
  .article-body{max-width:100%;}
}

@media (max-width:768px){
  body{font-size:16px;padding-bottom:64px;}
  :root{--section-y:56px;}
  .grid-container{padding-left:20px;padding-right:20px;}
  .cat-hero{padding-bottom:40px;}
  .cat-hero-inner{padding-top:24px;}
  .brand-text{max-width:150px;overflow:hidden;text-overflow:ellipsis;white-space:nowrap;}
  .cta-panel{padding:36px 26px;border-radius:16px;}
  .cta-actions{width:100%;}
  .cta-actions .btn{flex:1 1 auto;justify-content:center;}
  .float-cta{
    left:0;
    right:0;
    bottom:0;
    border-radius:0;
    justify-content:center;
    padding:0;
    height:56px;
    padding-bottom:env(safe-area-inset-bottom);
    box-shadow:0 -8px 24px rgba(14,58,92,.22);
    transform:translateY(0);
  }
  .float-cta.is-visible{transform:translateY(0);}
  .footer-bottom{flex-direction:column;align-items:flex-start;}
  .table-wrap{overflow-x:auto;}
  .table-wrap table{min-width:520px;}
}

@media (max-width:640px){
  .card-grid{grid-template-columns:1fr;}
  .anchor-bar a{font-size:14px;padding:8px 14px;}
  .faq-q{padding:18px 20px;font-size:15.6px;}
  .faq-a-inner p{padding:14px 20px 20px;}
  .article-body h2:not(:first-child){margin-top:40px;}
}

/* roulang page: category2 */
/* ================= 设计变量 ================= */
:root{
  --c-primary:#1A5D8F;
  --c-primary-dark:#0E3A5C;
  --c-primary-soft:#E7F0F7;
  --c-green:#2E9E83;
  --c-green-deep:#1F7A64;
  --c-gold:#F2B03D;
  --c-danger:#D9534F;
  --c-bg:#F6F9FB;
  --c-card:#FFFFFF;
  --c-border:#DCE6EE;
  --c-text:#16242F;
  --c-muted:#5B6B77;
  --r-card:14px;
  --r-btn:10px;
  --r-badge:6px;
  --r-pill:999px;
  --shadow-card:0 2px 4px rgba(16,42,67,.04), 0 12px 28px rgba(16,42,67,.08);
  --shadow-hover:0 18px 40px rgba(16,42,67,.12);
  --shadow-nav:0 6px 20px rgba(16,42,67,.08);
  --ease:.25s ease;
  --container:1200px;
  --sec-pad:96px;
  --font:system-ui,-apple-system,"PingFang SC","Microsoft YaHei","Helvetica Neue",Arial,sans-serif;
}

/* ================= 基础重置 ================= */
*,*::before,*::after{box-sizing:border-box;}
html{-webkit-text-size-adjust:100%;scroll-behavior:smooth;}
body{
  margin:0;
  font-family:var(--font);
  font-size:17px;
  line-height:1.75;
  color:var(--c-text);
  background:var(--c-bg);
  -webkit-font-smoothing:antialiased;
  padding-bottom:0;
}
img{max-width:100%;height:auto;display:block;}
a{color:var(--c-primary);text-decoration:none;transition:color var(--ease);}
a:hover{color:var(--c-primary-dark);}
button{font-family:inherit;font-size:inherit;cursor:pointer;border:0;background:none;color:inherit;}
ul,ol{margin:0;padding:0;list-style:none;}
h1,h2,h3,h4{margin:0;font-weight:700;letter-spacing:-.01em;line-height:1.32;}
h1{font-size:clamp(30px,4.4vw,52px);}
h2{font-size:clamp(26px,3.2vw,34px);}
h3{font-size:20px;}
p{margin:0;}
table{border-collapse:collapse;width:100%;}
:focus-visible{outline:3px solid rgba(26,93,143,.35);outline-offset:2px;border-radius:6px;}
::selection{background:rgba(26,93,143,.18);}

/* ================= Foundation 覆盖 ================= */
.grid-container{max-width:var(--container);padding-left:24px;padding-right:24px;margin-left:auto;margin-right:auto;}
.grid-x{margin-left:-12px;margin-right:-12px;}
.grid-x > .cell{padding-left:12px;padding-right:12px;}

/* ================= 通用组件 ================= */
.section{padding:var(--sec-pad) 0;}
.section-alt{background:#fff;}
.section-head{max-width:780px;margin-bottom:44px;}
.section-head.center{margin-left:auto;margin-right:auto;text-align:center;}
.eyebrow{
  display:inline-block;font-size:13px;font-weight:600;letter-spacing:.08em;
  color:var(--c-primary);background:var(--c-primary-soft);
  padding:6px 14px;border-radius:var(--r-pill);margin-bottom:18px;
}
.section-head h2{margin-bottom:14px;}
.section-sub{color:var(--c-muted);font-size:16px;line-height:1.8;}
.section-head-light h2{color:#fff;}
.section-head-light .section-sub{color:rgba(255,255,255,.75);}
.eyebrow-light{background:rgba(255,255,255,.14);color:#fff;}

.btn{
  display:inline-flex;align-items:center;justify-content:center;gap:8px;
  padding:13px 26px;font-size:16px;font-weight:600;border-radius:var(--r-btn);
  border:1px solid transparent;white-space:nowrap;
  transition:background var(--ease),color var(--ease),border-color var(--ease),transform var(--ease),box-shadow var(--ease);
}
.btn-primary{background:var(--c-primary);color:#fff;box-shadow:0 8px 18px rgba(26,93,143,.22);}
.btn-primary:hover{background:var(--c-primary-dark);color:#fff;transform:translateY(-2px);}
.btn-ghost{background:#fff;color:var(--c-primary);border-color:var(--c-border);}
.btn-ghost:hover{background:var(--c-primary-soft);border-color:#c6dcee;color:var(--c-primary-dark);}
.btn-sm{padding:10px 18px;font-size:15px;}
.btn-block{width:100%;}
.btn-light{background:#fff;color:var(--c-primary-dark);}
.btn-light:hover{background:var(--c-primary-soft);color:var(--c-primary-dark);transform:translateY(-2px);}
.btn-outline-light{background:transparent;color:#fff;border-color:rgba(255,255,255,.55);}
.btn-outline-light:hover{background:rgba(255,255,255,.12);color:#fff;border-color:#fff;}

.link-arrow{display:inline-flex;align-items:center;gap:8px;font-weight:600;font-size:16px;}
.link-arrow i{transition:transform var(--ease);}
.link-arrow:hover{text-decoration:underline;text-underline-offset:4px;}
.link-arrow:hover i{transform:translateX(4px);}

.badge{
  display:inline-flex;align-items:center;gap:6px;padding:5px 12px;
  border-radius:var(--r-badge);font-size:13px;font-weight:600;
  background:var(--c-primary-soft);color:var(--c-primary);
}
.badge-green{background:rgba(46,158,131,.13);color:var(--c-green-deep);}
.badge-gold{background:rgba(242,176,61,.18);color:#8A5A0B;}

.skip-link{
  position:absolute;left:-9999px;top:0;z-index:200;
  background:var(--c-primary);color:#fff;padding:12px 20px;border-radius:0 0 10px 0;
}
.skip-link:focus{left:0;color:#fff;}

/* ================= 顶部导航 ================= */
.site-header{
  position:sticky;top:0;z-index:60;background:#fff;
  border-bottom:1px solid var(--c-border);
  transition:box-shadow var(--ease);
}
.site-header.is-scrolled{box-shadow:var(--shadow-nav);}
.header-inner{
  display:flex;align-items:center;justify-content:space-between;
  gap:24px;height:72px;transition:height var(--ease);
}
.site-header.is-scrolled .header-inner{height:64px;}
.brand{display:flex;align-items:center;gap:10px;color:var(--c-text);}
.brand:hover{color:var(--c-text);}
.brand-mark{
  width:38px;height:38px;border-radius:11px;flex:0 0 auto;
  background:linear-gradient(135deg,var(--c-primary),var(--c-primary-dark));
  color:#fff;display:grid;place-items:center;font-weight:700;font-size:18px;
}
.brand-text{font-weight:700;font-size:17px;letter-spacing:-.01em;white-space:nowrap;}
.main-nav{display:flex;align-items:center;gap:6px;}
.nav-link{
  position:relative;padding:8px 14px;font-size:15px;font-weight:600;
  color:var(--c-muted);border-radius:8px;transition:color var(--ease),background var(--ease);
}
.nav-link:hover{color:var(--c-primary);background:var(--c-primary-soft);}
.nav-link.is-active{color:var(--c-primary);}
.nav-link.is-active::after{
  content:"";position:absolute;left:14px;right:14px;bottom:0;height:2px;
  background:var(--c-primary);border-radius:2px;
}
.header-actions{display:flex;align-items:center;gap:12px;}
.nav-toggle{
  display:none;width:42px;height:42px;border-radius:10px;
  border:1px solid var(--c-border);color:var(--c-primary);
  align-items:center;justify-content:center;font-size:17px;background:#fff;
}
.nav-toggle:hover{background:var(--c-primary-soft);}

/* 移动抽屉 */
.drawer-mask{
  position:fixed;inset:0;background:rgba(14,58,92,.45);z-index:80;
  opacity:0;visibility:hidden;transition:opacity var(--ease),visibility var(--ease);
}
.drawer-mask.is-open{opacity:1;visibility:visible;}
.drawer{
  position:fixed;top:0;right:0;height:100%;width:84vw;max-width:360px;z-index:90;
  background:#fff;display:flex;flex-direction:column;
  transform:translateX(100%);transition:transform .3s ease;
  box-shadow:-12px 0 40px rgba(16,42,67,.16);
}
.drawer.is-open{transform:translateX(0);}
.drawer-head{
  display:flex;align-items:center;gap:10px;padding:20px 20px 16px;
  border-bottom:1px solid var(--c-border);font-weight:700;
}
.drawer-close{
  margin-left:auto;width:38px;height:38px;border-radius:10px;
  border:1px solid var(--c-border);display:grid;place-items:center;color:var(--c-muted);
}
.drawer-close:hover{background:var(--c-primary-soft);color:var(--c-primary);}
.drawer-nav{flex:1;overflow-y:auto;padding:16px 12px;}
.drawer-nav a{
  display:block;padding:14px 16px;border-radius:10px;
  font-weight:600;color:var(--c-text);font-size:16px;
}
.drawer-nav a:hover{background:var(--c-primary-soft);color:var(--c-primary);}
.drawer-nav a.is-active{background:var(--c-primary-soft);color:var(--c-primary);}
.drawer-foot{
  padding:16px 20px calc(20px + env(safe-area-inset-bottom));
  border-top:1px solid var(--c-border);
}

/* ================= 浮动 CTA ================= */
.float-cta{
  position:fixed;right:28px;bottom:32px;z-index:70;
  display:inline-flex;align-items:center;gap:10px;
  padding:14px 26px;border-radius:var(--r-pill);
  background:var(--c-primary);color:#fff;font-weight:600;font-size:15px;
  box-shadow:0 14px 32px rgba(26,93,143,.34);
  opacity:0;visibility:hidden;transform:translateY(14px);
  transition:opacity var(--ease),visibility var(--ease),transform var(--ease),background var(--ease);
}
.float-cta:hover{background:var(--c-primary-dark);color:#fff;}
.float-cta.is-visible{opacity:1;visibility:visible;transform:translateY(0);}

/* ================= 面包屑 / 页面 Hero ================= */
.breadcrumb{display:flex;flex-wrap:wrap;align-items:center;gap:8px;font-size:14px;color:var(--c-muted);margin-bottom:22px;}
.breadcrumb a{color:var(--c-muted);}
.breadcrumb a:hover{color:var(--c-primary);}
.breadcrumb .sep{color:#A9BCCB;}
.breadcrumb .current{color:var(--c-primary);font-weight:600;}

.page-hero{position:relative;overflow:hidden;padding:56px 0 60px;background:#F2F7FB;}
.page-hero::before{
  content:"";position:absolute;inset:0;
  background-image:url('/assets/images/backpic/back-2.webp');
  background-size:cover;background-position:center right;opacity:.18;
}
.page-hero::after{
  content:"";position:absolute;inset:0;
  background:linear-gradient(95deg,rgba(246,249,251,.97) 0%,rgba(246,249,251,.9) 52%,rgba(246,249,251,.6) 100%);
}
.page-hero > .grid-container{position:relative;z-index:2;}
.page-hero h1{max-width:900px;margin-bottom:18px;}
.hero-sub{max-width:720px;font-size:17px;color:var(--c-muted);line-height:1.85;}
.hero-chips{display:flex;flex-wrap:wrap;gap:12px;margin-top:30px;}
.chip{
  display:inline-flex;align-items:center;gap:8px;padding:9px 18px;
  border-radius:var(--r-pill);background:#fff;border:1px solid var(--c-border);
  color:var(--c-muted);font-size:14px;font-weight:600;
  transition:border-color var(--ease),color var(--ease),background var(--ease),transform var(--ease);
}
.chip i{color:var(--c-primary);font-size:12px;}
.chip:hover{border-color:var(--c-primary);color:var(--c-primary);background:#fff;transform:translateY(-2px);}

/* ================= 分阶段标签区 ================= */
.stage-tab-list{
  display:flex;flex-wrap:wrap;gap:10px;margin-bottom:30px;
  border-bottom:1px solid var(--c-border);padding-bottom:18px;
}
.stage-tab{
  display:inline-flex;align-items:center;gap:10px;
  padding:11px 22px;border-radius:var(--r-pill);
  border:1px solid var(--c-border);background:#fff;
  font-size:15px;font-weight:600;color:var(--c-muted);
  transition:all var(--ease);
}
.stage-tab-num{font-variant-numeric:tabular-nums;font-size:13px;color:#9BB0C1;}
.stage-tab:hover{border-color:#C6DCEE;color:var(--c-primary);}
.stage-tab.is-active{
  background:var(--c-primary);border-color:var(--c-primary);color:#fff;
  box-shadow:0 8px 18px rgba(26,93,143,.22);
}
.stage-tab.is-active .stage-tab-num{color:rgba(255,255,255,.7);}
.stage-panel{display:none;}
.stage-panel.is-active{display:block;animation:fadeUp .35s ease;}
@keyframes fadeUp{from{opacity:0;transform:translateY(10px);}to{opacity:1;transform:translateY(0);}}

.point-grid{display:grid;grid-template-columns:repeat(2,minmax(0,1fr));gap:24px;}
.point-card{
  background:var(--c-card);border:1px solid var(--c-border);border-radius:var(--r-card);
  padding:26px;box-shadow:var(--shadow-card);
  transition:transform var(--ease),box-shadow var(--ease),border-color var(--ease);
}
.point-card:hover{transform:translateY(-3px);box-shadow:var(--shadow-hover);border-color:#C6DCEE;}
.point-icon{
  width:44px;height:44px;border-radius:12px;display:grid;place-items:center;
  background:var(--c-primary-soft);color:var(--c-primary);font-size:17px;margin-bottom:16px;
}
.point-card h3{font-size:19px;margin-bottom:10px;}
.point-card p{color:var(--c-muted);font-size:15px;line-height:1.8;}
.point-note{
  display:inline-flex;align-items:center;gap:8px;margin-top:14px;
  font-size:13px;font-weight:600;color:var(--c-green-deep);
}
.point-note i{font-size:11px;}

/* ================= 深色排查流程 ================= */
.steps-section{background:var(--c-primary-dark);color:#fff;}
.steps-grid{display:grid;grid-template-columns:repeat(4,minmax(0,1fr));gap:32px;}
.step{position:relative;padding-top:6px;}
.step-num{
  width:46px;height:46px;border-radius:50%;display:grid;place-items:center;
  font-weight:700;font-size:16px;font-variant-numeric:tabular-nums;
  background:rgba(255,255,255,.12);border:1px solid rgba(255,255,255,.26);
  color:#fff;margin-bottom:20px;
}
.step h3{color:#fff;font-size:19px;margin-bottom:10px;}
.step p{color:rgba(255,255,255,.72);font-size:15px;line-height:1.8;}
.step:not(:last-child)::after{
  content:"";position:absolute;top:29px;left:62px;right:-32px;height:1px;
  background:rgba(255,255,255,.2);
}

/* ================= 数据条 ================= */
.stat-grid{display:grid;grid-template-columns:repeat(4,minmax(0,1fr));gap:24px;}
.stat-item{
  background:var(--c-card);border:1px solid var(--c-border);border-radius:var(--r-card);
  padding:28px 22px;text-align:center;box-shadow:var(--shadow-card);
  transition:transform var(--ease),box-shadow var(--ease);
}
.stat-item:hover{transform:translateY(-3px);box-shadow:var(--shadow-hover);}
.stat-num{
  font-size:clamp(30px,3.4vw,40px);font-weight:700;color:var(--c-primary);
  font-variant-numeric:tabular-nums;letter-spacing:-.02em;line-height:1.15;
}
.stat-num small{font-size:15px;font-weight:600;color:var(--c-muted);margin-left:4px;}
.stat-label{margin-top:8px;font-size:14px;color:var(--c-muted);}

/* ================= 图文分栏 ================= */
.split{display:grid;grid-template-columns:1.05fr 1fr;gap:56px;align-items:center;}
.split-media img{
  width:100%;aspect-ratio:16/11;object-fit:cover;
  border-radius:var(--r-card);box-shadow:var(--shadow-card);
  background:#EDF3F8;
}
.split-body h2{margin-bottom:16px;}
.split-body > p{color:var(--c-muted);font-size:16px;margin-bottom:22px;}
.check-list{margin-bottom:26px;}
.check-list li{
  display:flex;gap:12px;align-items:flex-start;
  padding:12px 0;border-bottom:1px dashed var(--c-border);
  font-size:15px;color:var(--c-text);
}
.check-list li:last-child{border-bottom:0;}
.check-list i{color:var(--c-green);font-size:14px;margin-top:6px;}

/* ================= FAQ ================= */
.faq-list{max-width:900px;}
.faq-item{
  background:var(--c-card);border:1px solid var(--c-border);border-radius:12px;
  margin-bottom:14px;overflow:hidden;
  transition:border-color var(--ease),box-shadow var(--ease);
}
.faq-item:hover{border-color:#C6DCEE;}
.faq-item.is-open{border-color:#C6DCEE;box-shadow:var(--shadow-card);}
.faq-q{
  width:100%;display:flex;align-items:center;justify-content:space-between;gap:16px;
  padding:20px 24px;text-align:left;font-size:16px;font-weight:600;color:var(--c-text);
  line-height:1.6;min-height:60px;
}
.faq-q:hover{color:var(--c-primary);}
.faq-icon{
  flex:0 0 auto;width:26px;height:26px;border-radius:50%;
  display:grid;place-items:center;font-size:12px;
  background:var(--c-primary-soft);color:var(--c-primary);
  transition:transform var(--ease),color var(--ease),background var(--ease);
}
.faq-item.is-open .faq-icon{transform:rotate(45deg);background:var(--c-primary);color:#fff;}
.faq-a{
  max-height:0;overflow:hidden;padding:0 24px;
  transition:max-height .3s ease,padding .3s ease;
}
.faq-item.is-open .faq-a{max-height:640px;padding:0 24px 22px;}
.faq-a p{
  color:var(--c-muted);font-size:15px;line-height:1.85;
  border-top:1px solid var(--c-border);padding-top:16px;
}

/* ================= 底部 CTA ================= */
.cta-band{
  background:linear-gradient(135deg,#EAF3FA 0%,#F7FBFD 62%,#FFFFFF 100%);
  border:1px solid var(--c-border);border-radius:18px;
  padding:48px;display:grid;grid-template-columns:1.5fr 1fr;gap:40px;align-items:center;
}
.cta-band h2{margin-bottom:14px;font-size:clamp(24px,2.8vw,30px);}
.cta-band p{color:var(--c-muted);font-size:16px;}
.cta-actions{display:flex;flex-wrap:wrap;gap:14px;}

/* ================= 页脚 ================= */
.site-footer{background:var(--c-primary-dark);color:#fff;padding:72px 0 0;margin-top:0;}
.site-footer h4{font-size:16px;margin-bottom:18px;color:#fff;}
.site-footer a{color:rgba(255,255,255,.78);}
.site-footer a:hover{color:var(--c-gold);}
.footer-brand{display:flex;align-items:center;gap:10px;font-weight:700;font-size:17px;margin-bottom:14px;}
.footer-desc{color:rgba(255,255,255,.7);font-size:14px;line-height:1.85;max-width:320px;}
.footer-links li{margin-bottom:10px;}
.footer-links a{font-size:15px;}
.footer-contact li{
  display:flex;align-items:center;gap:10px;
  color:rgba(255,255,255,.78);font-size:15px;margin-bottom:12px;
}
.footer-contact i{color:var(--c-gold);font-size:14px;width:16px;text-align:center;}
.footer-bottom{
  border-top:1px solid rgba(255,255,255,.14);margin-top:24px;padding:22px 0;
  display:flex;justify-content:space-between;gap:12px;flex-wrap:wrap;
  font-size:13px;color:rgba(255,255,255,.6);
}

/* ================= 响应式 ================= */
@media (max-width:1024px){
  :root{--sec-pad:72px;}
  .main-nav{display:none;}
  .nav-toggle{display:flex;}
  .header-actions .btn{display:none;}
  .steps-grid{grid-template-columns:repeat(2,minmax(0,1fr));gap:36px;}
  .step:nth-child(2)::after{display:none;}
  .split{gap:36px;}
  .cta-band{grid-template-columns:1fr;padding:38px;}
}
@media (max-width:1023px){
  body{padding-bottom:76px;}
  .float-cta{
    left:0;right:0;bottom:0;width:100%;border-radius:0;
    justify-content:center;height:56px;padding:0 20px calc(env(safe-area-inset-bottom));
    transform:translateY(0);box-shadow:0 -6px 20px rgba(16,42,67,.16);
  }
  .float-cta.is-visible{transform:translateY(0);}
}
@media (max-width:768px){
  :root{--sec-pad:56px;}
  body{font-size:16px;}
  .grid-container{padding-left:20px;padding-right:20px;}
  .point-grid{grid-template-columns:1fr;}
  .split{grid-template-columns:1fr;}
  .split-media{order:-1;}
  .stat-grid{grid-template-columns:repeat(2,minmax(0,1fr));}
  .section-head{margin-bottom:32px;}
  .hero-chips{gap:10px;}
  .chip{padding:8px 14px;font-size:13px;}
  .faq-q{padding:18px;font-size:15.5px;}
  .faq-a{padding:0 18px;}
  .faq-item.is-open .faq-a{padding:0 18px 18px;}
  .footer-bottom{flex-direction:column;}
}
@media (max-width:520px){
  .steps-grid{grid-template-columns:1fr;}
  .step:not(:last-child)::after{display:none;}
  .stage-tab{flex:1 1 100%;justify-content:center;}
  .cta-actions .btn{width:100%;}
  .brand-text{font-size:16px;}
}
@media (min-width:1440px){
  :root{--container:1200px;}
}