/* roulang page: index */
:root{
  --brand:#2456C7;
  --brand-700:#173F9E;
  --brand-50:#EEF3FE;
  --brand-100:#DCE7FC;
  --accent:#F08A24;
  --accent-hover:#D9761A;
  --teal:#1E8E8E;
  --bg:#F6F8FC;
  --bg-soft:#EDF2FB;
  --card:#FFFFFF;
  --ink:#101B2E;
  --ink-2:#4A5A73;
  --ink-3:#8595AD;
  --line:#E3E9F2;
  --success:#1F9D62;
  --warning:#E0A020;
  --danger:#D8453C;
  --r-card:16px;
  --r-img:12px;
  --r-btn:10px;
  --shadow-card:0 1px 2px rgba(16,27,46,.04),0 8px 24px -14px rgba(16,27,46,.12);
  --shadow-hover:0 2px 6px rgba(16,27,46,.06),0 20px 42px -20px rgba(16,27,46,.24);
  --ease:cubic-bezier(.2,.7,.3,1);
}
*,*::before,*::after{box-sizing:border-box}
html{-webkit-text-size-adjust:100%;scroll-behavior:smooth}
body{
  margin:0;
  font-family:"Inter",system-ui,"PingFang SC","Microsoft YaHei","Noto Sans SC",sans-serif;
  background:var(--bg);
  color:var(--ink);
  font-size:16px;
  line-height:1.75;
  -webkit-font-smoothing:antialiased;
}
img{max-width:100%;display:block;height:auto}
a{color:inherit;text-decoration:none}
button,input{font:inherit;color:inherit}
h1,h2,h3,h4,p,figure{margin:0}
ul,ol{margin:0;padding:0;list-style:none}
:focus-visible{outline:2px solid var(--brand);outline-offset:2px;border-radius:4px}
.container{width:100%;max-width:1280px;margin:0 auto;padding:0 32px}
.section{padding:88px 0;border-top:1px solid var(--line)}
.section--soft{background:var(--bg-soft)}
.section-head{display:flex;align-items:flex-end;justify-content:space-between;gap:24px;margin-bottom:40px}
.section-title{font-size:clamp(22px,2.4vw,30px);font-weight:700;line-height:1.3;letter-spacing:.01em}
.section-desc{margin-top:10px;color:var(--ink-2);font-size:15px;max-width:680px}
.eyebrow{display:inline-flex;align-items:center;gap:8px;font-size:12px;font-weight:600;letter-spacing:.1em;color:var(--brand)}
.eyebrow::before{content:"";width:6px;height:6px;border-radius:50%;background:var(--accent)}

/* 按钮 */
.btn{display:inline-flex;align-items:center;justify-content:center;gap:8px;min-height:44px;padding:0 22px;border-radius:var(--r-btn);font-size:15px;font-weight:600;border:1px solid transparent;cursor:pointer;transition:transform .2s var(--ease),background .2s var(--ease),border-color .2s var(--ease),box-shadow .2s var(--ease),color .2s var(--ease);white-space:nowrap}
.btn-primary{background:var(--brand);color:#fff}
.btn-primary:hover{background:var(--brand-700);transform:translateY(-2px);box-shadow:0 12px 24px -14px rgba(36,86,199,.8)}
.btn-primary:active{transform:translateY(0)}
.btn-outline{background:#fff;color:var(--brand);border-color:var(--brand-100)}
.btn-outline:hover{background:var(--brand-50);border-color:var(--brand);transform:translateY(-2px)}
.btn-outline:active{transform:translateY(0)}
.btn-ghost{background:var(--brand-50);color:var(--brand)}
.btn-ghost:hover{background:var(--brand-100)}
.btn:disabled,.btn[aria-disabled="true"]{opacity:.5;pointer-events:none}
.btn-text{display:inline-flex;align-items:center;gap:6px;font-size:14px;font-weight:600;color:var(--brand);min-height:44px;transition:color .2s var(--ease)}
.btn-text i{transition:transform .2s var(--ease)}
.btn-text:hover{color:var(--brand-700)}
.btn-text:hover i{transform:translateX(4px)}

/* 徽章 */
.badge{display:inline-flex;align-items:center;gap:5px;padding:3px 10px;border-radius:999px;font-size:12px;font-weight:600;line-height:1.6}
.badge-cat{background:var(--brand-50);color:var(--brand)}
.badge-hot{background:var(--accent);color:#fff}
.badge-time{background:var(--bg-soft);color:var(--ink-2)}
.badge-teal{background:rgba(30,142,142,.12);color:var(--teal)}

/* 导航 */
.site-header{position:sticky;top:0;z-index:80;background:#fff;border-bottom:1px solid var(--line);transition:box-shadow .25s var(--ease)}
.site-header.is-stuck{box-shadow:0 2px 18px -10px rgba(16,27,46,.24)}
.nav-wrap{display:grid;grid-template-columns:1fr 1fr;align-items:center;gap:32px;height:64px;transition:height .25s var(--ease)}
.site-header.is-stuck .nav-wrap{height:56px}
.nav-left{display:flex;align-items:center;gap:24px;min-width:0}
.nav-right{display:flex;align-items:center;justify-content:flex-end;gap:14px;min-width:0}
.brand{display:inline-flex;align-items:center;gap:9px;font-size:16px;font-weight:700;letter-spacing:.01em;color:var(--ink);white-space:nowrap}
.brand-mark{width:28px;height:28px;border-radius:8px;background:linear-gradient(135deg,var(--brand),var(--brand-700));display:inline-flex;align-items:center;justify-content:center;color:#fff;font-size:13px;flex:none}
.nav-links{display:flex;align-items:center;gap:6px;min-width:0}
.nav-link{position:relative;display:inline-flex;align-items:center;height:40px;padding:0 10px;border-radius:8px;font-size:13.5px;font-weight:600;color:var(--ink-2);transition:color .2s var(--ease),background .2s var(--ease)}
.nav-link:hover{color:var(--brand);background:var(--brand-50)}
.nav-link.is-active{color:var(--brand)}
.nav-link.is-active::after{content:"";position:absolute;left:10px;right:10px;bottom:2px;height:2px;border-radius:2px;background:var(--brand)}
.search{display:flex;align-items:center;gap:8px;height:44px;padding:0 8px 0 14px;border-radius:999px;border:1px solid var(--line);background:var(--bg);width:240px;transition:width .25s var(--ease),border-color .2s var(--ease),background .2s var(--ease)}
.search:focus-within{width:290px;border-color:var(--brand);background:#fff;box-shadow:0 0 0 4px var(--brand-50)}
.search i{color:var(--ink-3);font-size:14px}
.search input{flex:1;min-width:0;border:0;background:transparent;outline:none;font-size:14px}
.search button{width:32px;height:32px;border:0;border-radius:50%;background:var(--brand);color:#fff;cursor:pointer;display:inline-flex;align-items:center;justify-content:center;font-size:12px;transition:background .2s var(--ease)}
.search button:hover{background:var(--brand-700)}
.nav-toggle{display:none;width:44px;height:44px;border:1px solid var(--line);border-radius:10px;background:#fff;cursor:pointer;flex-direction:column;align-items:center;justify-content:center;gap:4px}
.nav-toggle span{display:block;width:18px;height:2px;border-radius:2px;background:var(--ink);transition:transform .2s var(--ease),opacity .2s var(--ease)}
.nav-toggle.is-open span:nth-child(1){transform:translateY(6px) rotate(45deg)}
.nav-toggle.is-open span:nth-child(2){opacity:0}
.nav-toggle.is-open span:nth-child(3){transform:translateY(-6px) rotate(-45deg)}
.nav-drawer{display:none;border-top:1px solid var(--line);background:#fff;padding:12px 0 20px}
.nav-drawer.is-open{display:block}
.nav-drawer .nav-link{display:flex;height:48px;font-size:15px;padding:0 14px;border-radius:10px}
.nav-drawer .nav-link.is-active::after{display:none}
.nav-drawer .nav-link.is-active{background:var(--brand-50)}
.drawer-search{display:flex;align-items:center;gap:8px;height:48px;margin-top:12px;padding:0 16px;border:1px solid var(--line);border-radius:10px;background:var(--bg)}

/* Hero */
.hero{padding:96px 0 72px;background:
  radial-gradient(1000px 400px at 12% -10%,rgba(36,86,199,.07),transparent 60%),
  linear-gradient(180deg,#fff 0%,var(--bg) 100%);
  border-bottom:1px solid var(--line);
}
.hero-grid{display:grid;grid-template-columns:1fr 1fr;gap:56px;align-items:center}
.hero-title{font-size:clamp(28px,4vw,44px);font-weight:700;line-height:1.25;letter-spacing:.01em;margin-top:16px}
.hero-sub{margin-top:18px;font-size:16px;line-height:1.8;color:var(--ink-2);max-width:560px}
.hero-actions{display:flex;flex-wrap:wrap;gap:14px;margin-top:30px}
.hero-metrics{display:flex;flex-wrap:wrap;gap:36px;margin-top:40px;padding-top:26px;border-top:1px solid var(--line)}
.hero-metrics li{display:flex;flex-direction:column;gap:2px}
.metric-num{font-size:22px;font-weight:700;color:var(--brand);letter-spacing:.02em;line-height:1.2}
.metric-label{font-size:13px;color:var(--ink-3)}
.hero-visual{position:relative;border-radius:20px;overflow:hidden;background:var(--bg-soft);box-shadow:var(--shadow-card);min-height:380px}
.hero-visual img{width:100%;height:100%;min-height:380px;object-fit:cover}
.hero-visual::after{content:"";position:absolute;inset:0;background:linear-gradient(180deg,rgba(246,248,252,.06),rgba(16,27,46,.34));pointer-events:none}
.hero-overlay-card{position:absolute;left:20px;bottom:20px;right:20px;z-index:2;background:rgba(255,255,255,.95);border-radius:14px;padding:16px 18px;box-shadow:0 12px 30px -16px rgba(16,27,46,.35)}
.hero-overlay-card h2{font-size:14px;font-weight:700;color:var(--ink);letter-spacing:.02em}
.hero-overlay-card ul{margin-top:10px;display:flex;flex-direction:column;gap:7px}
.hero-overlay-card li{display:flex;align-items:center;gap:10px;font-size:13.5px;color:var(--ink-2)}
.hero-overlay-card li b{font-size:11px;font-weight:700;color:var(--accent);min-width:20px}

/* 更新条 */
.ticker{background:#fff;border-bottom:1px solid var(--line)}
.ticker-inner{display:flex;align-items:center;gap:16px;min-height:60px}
.ticker-label{flex:none;display:inline-flex;align-items:center;gap:6px;padding:3px 12px;border-radius:999px;background:var(--brand-50);color:var(--brand);font-size:12px;font-weight:700}
.ticker p{flex:1;font-size:14px;color:var(--ink-2);min-width:0;overflow:hidden;text-overflow:ellipsis;white-space:nowrap}

/* 目录 */
.catalog-list{border-top:1px solid var(--line)}
.catalog-item{display:grid;grid-template-columns:56px 132px 1fr auto;gap:28px;align-items:flex-start;padding:32px 0;border-bottom:1px solid var(--line);transition:background .2s var(--ease)}
.catalog-item:hover{background:var(--bg-soft)}
.catalog-num{font-size:26px;font-weight:700;color:var(--brand-100);letter-spacing:.02em;line-height:1.1}
.catalog-item:hover .catalog-num{color:var(--accent)}
.catalog-thumb{width:132px;height:92px;border-radius:var(--r-img);object-fit:cover;background:var(--bg-soft)}
.catalog-body h3{font-size:19px;font-weight:600;line-height:1.5}
.catalog-body h3 a{transition:color .2s var(--ease)}
.catalog-body h3 a:hover{color:var(--brand)}
.catalog-body p{margin-top:8px;font-size:14.5px;color:var(--ink-2);max-width:720px}
.catalog-sublist{display:flex;flex-wrap:wrap;gap:8px 22px;margin-top:14px}
.catalog-sublist a{font-size:13.5px;color:var(--ink-2);position:relative;padding-left:12px;transition:color .2s var(--ease)}
.catalog-sublist a::before{content:"";position:absolute;left:0;top:11px;width:5px;height:5px;border-radius:50%;background:var(--brand-100);transition:background .2s var(--ease)}
.catalog-sublist a:hover{color:var(--brand)}
.catalog-sublist a:hover::before{background:var(--accent)}
.catalog-link{justify-self:end;align-self:center}

/* 卡片 */
.card{background:var(--card);border:1px solid var(--line);border-radius:var(--r-card);box-shadow:var(--shadow-card);transition:transform .2s var(--ease),box-shadow .2s var(--ease),border-color .2s var(--ease)}
.card:hover{transform:translateY(-4px);box-shadow:var(--shadow-hover);border-color:var(--brand-100)}

/* 最新信息 */
.news-grid{display:grid;grid-template-columns:repeat(3,minmax(0,1fr));gap:24px}
.news-card{overflow:hidden}
.news-card--lead{grid-column:span 2;display:grid;grid-template-columns:1fr 1fr}
.news-card--lead .news-media{height:100%;min-height:230px}
.news-media{position:relative;background:var(--bg-soft);aspect-ratio:16/9;overflow:hidden}
.news-media img{width:100%;height:100%;object-fit:cover}
.news-body{padding:22px}
.news-title{margin-top:12px;font-size:17px;font-weight:600;line-height:1.55;display:-webkit-box;-webkit-line-clamp:2;-webkit-box-orient:vertical;overflow:hidden}
.news-card--lead .news-title{font-size:20px}
.news-summary{margin-top:10px;font-size:14px;color:var(--ink-2);line-height:1.75;display:-webkit-box;-webkit-line-clamp:2;-webkit-box-orient:vertical;overflow:hidden}
.news-meta{display:flex;align-items:center;gap:10px;margin-top:16px;font-size:12.5px;color:var(--ink-3)}
.news-link{display:block;height:100%}
.news-link:hover .news-title{color:var(--brand)}

/* 空态 */
.empty-state{display:flex;flex-direction:column;align-items:center;justify-content:center;gap:14px;padding:56px 20px;border:1px dashed var(--line);border-radius:var(--r-card);background:#fff;text-align:center}
.empty-state i{font-size:26px;color:var(--ink-3)}
.empty-state p{font-size:14.5px;color:var(--ink-2)}

/* 精选 */
.featured-grid{display:grid;grid-template-columns:7fr 5fr;gap:28px;align-items:stretch}
.feature-card{display:flex;flex-direction:column;overflow:hidden}
.feature-media{position:relative;aspect-ratio:16/10;background:var(--bg-soft)}
.feature-media img{width:100%;height:100%;object-fit:cover}
.feature-media .badge-hot{position:absolute;left:14px;top:14px}
.feature-body{padding:26px}
.feature-body h3{margin-top:12px;font-size:22px;font-weight:600;line-height:1.45}
.feature-body p{margin-top:12px;font-size:15px;color:var(--ink-2);line-height:1.8}
.feature-side{display:flex;flex-direction:column;gap:20px}
.mini-card{display:grid;grid-template-columns:110px 1fr;gap:16px;padding:14px;overflow:hidden}
.mini-card img{width:110px;height:82px;border-radius:var(--r-img);object-fit:cover;background:var(--bg-soft)}
.mini-card h3{font-size:15.5px;font-weight:600;line-height:1.55;display:-webkit-box;-webkit-line-clamp:2;-webkit-box-orient:vertical;overflow:hidden}
.mini-card p{margin-top:7px;font-size:13px;color:var(--ink-3)}
.mini-card a:hover h3{color:var(--brand)}

/* 推荐轨道 */
.rail{display:flex;gap:22px;overflow-x:auto;padding:4px 4px 20px;scroll-snap-type:x mandatory;scrollbar-width:none}
.rail::-webkit-scrollbar{display:none}
.rail-card{flex:0 0 calc((100% - 66px)/4);scroll-snap-align:start;overflow:hidden}
.rail-card img{width:100%;aspect-ratio:4/3;object-fit:cover;background:var(--bg-soft);border-radius:var(--r-img)}
.rail-card h3{margin-top:14px;font-size:15.5px;font-weight:600;line-height:1.55;display:-webkit-box;-webkit-line-clamp:2;-webkit-box-orient:vertical;overflow:hidden}
.rail-card span{display:inline-block;margin-top:10px;font-size:12.5px;color:var(--ink-3)}
.rail-card:hover h3{color:var(--brand)}
.rail-dots{display:flex;gap:8px;justify-content:center;margin-top:6px}
.rail-dots i{width:7px;height:7px;border-radius:50%;background:var(--line);transition:background .2s var(--ease),width .2s var(--ease)}
.rail-dots i.is-on{background:var(--brand);width:20px;border-radius:999px}

/* CTA 条带 */
.cta-band{display:flex;align-items:center;justify-content:space-between;gap:24px;padding:28px 32px;border:1px solid var(--brand-100);background:var(--brand-50);border-radius:var(--r-card)}
.cta-band h2{font-size:19px;font-weight:700;line-height:1.5}
.cta-band p{margin-top:6px;font-size:14px;color:var(--ink-2)}
.cta-actions{display:flex;gap:12px;flex-wrap:wrap}

/* FAQ */
.faq-list{border-top:1px solid var(--line)}
.faq-item{border-bottom:1px solid var(--line)}
.faq-item summary{display:flex;align-items:center;justify-content:space-between;gap:20px;min-height:56px;padding:14px 4px;font-size:16px;font-weight:600;cursor:pointer;list-style:none;transition:color .2s var(--ease)}
.faq-item summary::-webkit-details-marker{display:none}
.faq-item summary:hover{color:var(--brand)}
.faq-item summary i{flex:none;font-size:13px;color:var(--ink-3);transition:transform .25s var(--ease),color .2s var(--ease)}
.faq-item[open] summary i{transform:rotate(180deg);color:var(--brand)}
.faq-answer{padding:0 4px 22px;font-size:14.5px;line-height:1.85;color:var(--ink-2);max-width:820px;animation:fadeIn .25s var(--ease)}
@keyframes fadeIn{from{opacity:0;transform:translateY(-4px)}to{opacity:1;transform:none}}

/* 数据 / 认同 */
.stat-band{display:grid;grid-template-columns:repeat(4,minmax(0,1fr));gap:24px;border-top:1px solid var(--line);border-bottom:1px solid var(--line);padding:44px 0}
.stat-item{display:flex;flex-direction:column;gap:6px;padding-left:18px;border-left:2px solid var(--brand-100)}
.stat-item b{font-size:26px;font-weight:700;color:var(--ink);line-height:1.2}
.stat-item span{font-size:13.5px;color:var(--ink-2)}

/* 页脚 */
.site-footer{background:#fff;border-top:1px solid var(--line);padding:64px 0 0}
.footer-grid{display:grid;grid-template-columns:1.5fr 1fr 1fr 1.2fr;gap:40px;padding-bottom:44px}
.footer-brand p{margin-top:16px;font-size:14px;color:var(--ink-2);max-width:320px;line-height:1.8}
.footer-title{font-size:14px;font-weight:700;color:var(--ink);letter-spacing:.02em}
.footer-list{margin-top:16px;display:flex;flex-direction:column;gap:11px}
.footer-list a{font-size:14px;color:var(--ink-2);transition:color .2s var(--ease)}
.footer-list a:hover{color:var(--brand)}
.footer-contact li{display:flex;gap:10px;font-size:14px;color:var(--ink-2);margin-top:12px}
.footer-contact i{color:var(--brand);margin-top:5px;font-size:13px}
.footer-bottom{border-top:1px solid var(--line);padding:22px 0;display:flex;align-items:center;justify-content:space-between;gap:16px;flex-wrap:wrap;font-size:13px;color:var(--ink-3)}
.footer-group-toggle{display:none}

/* 响应式 */
@media (max-width:1279px){
  .rail-card{flex:0 0 calc((100% - 44px)/3)}
}
@media (max-width:1023px){
  .container{padding:0 28px}
  .nav-wrap{grid-template-columns:1fr auto;gap:16px}
  .nav-links{display:none}
  .nav-toggle{display:inline-flex}
  .search{display:none}
  .nav-right .btn{display:none}
  .hero{padding:64px 0 56px}
  .hero-grid{grid-template-columns:1fr;gap:36px}
  .hero-visual{min-height:280px}
  .hero-visual img{min-height:280px}
  .section{padding:64px 0}
  .news-grid{grid-template-columns:repeat(2,minmax(0,1fr))}
  .news-card--lead{grid-column:span 2;grid-template-columns:1fr 1fr}
  .featured-grid{grid-template-columns:1fr}
  .cta-band{flex-direction:column;align-items:flex-start}
  .stat-band{grid-template-columns:repeat(2,minmax(0,1fr));gap:28px}
  .footer-grid{grid-template-columns:1fr 1fr;gap:32px}
  .rail-card{flex:0 0 calc((100% - 22px)/2)}
}
@media (max-width:767px){
  .container{padding:0 20px}
  .section{padding:52px 0}
  .section-head{flex-direction:column;align-items:flex-start;gap:14px;margin-bottom:28px}
  .hero-title{font-size:clamp(24px,7vw,30px)}
  .hero-metrics{gap:24px}
  .catalog-item{grid-template-columns:auto 1fr;gap:16px;padding:24px 0}
  .catalog-num{grid-row:span 2;font-size:22px}
  .catalog-thumb{display:none}
  .catalog-link{grid-column:2;justify-self:start}
  .news-grid{grid-template-columns:1fr}
  .news-card--lead{grid-column:span 1;grid-template-columns:1fr}
  .news-card--lead .news-media{min-height:0;aspect-ratio:16/9}
  .mini-card{grid-template-columns:92px 1fr}
  .mini-card img{width:92px;height:72px}
  .rail-card{flex:0 0 76%}
  .cta-band{padding:22px 20px}
  .stat-band{grid-template-columns:1fr 1fr;padding:32px 0}
  .footer-grid{grid-template-columns:1fr;gap:8px;padding-bottom:24px}
  .footer-group{border-bottom:1px solid var(--line);padding:14px 0}
  .footer-title{display:flex;align-items:center;justify-content:space-between;cursor:pointer}
  .footer-list{display:none;margin-top:12px}
  .footer-group.is-open .footer-list{display:flex}
  .footer-brand{border-bottom:1px solid var(--line);padding-bottom:20px;margin-bottom:6px}
  .footer-bottom{flex-direction:column;align-items:flex-start;gap:8px}
}
@media (max-width:520px){
  .brand span{display:none}
  .hero-actions .btn{width:100%}
  .stat-band{grid-template-columns:1fr}
  .hero-overlay-card{left:14px;right:14px;bottom:14px;padding:14px}
}

/* roulang page: category1 */
:root{
  --brand:#2456C7;
  --brand-700:#173F9E;
  --brand-50:#EEF3FE;
  --brand-100:#DCE7FC;
  --accent:#F08A24;
  --accent-700:#D9761A;
  --teal:#1E8E8E;
  --bg:#F6F8FC;
  --bg-soft:#EDF2FB;
  --card:#FFFFFF;
  --ink:#101B2E;
  --ink-2:#4A5A73;
  --ink-3:#8595AD;
  --line:#E3E9F2;
  --success:#1F9D62;
  --danger:#D8453C;
  --r-card:16px;
  --r-img:12px;
  --r-btn:10px;
  --r-input:10px;
  --shadow-card:0 1px 2px rgba(16,27,46,.04), 0 8px 24px -14px rgba(16,27,46,.12);
  --shadow-hover:0 2px 4px rgba(16,27,46,.06), 0 18px 34px -18px rgba(16,27,46,.22);
  --ease:cubic-bezier(.2,.7,.3,1);
  --header-h:64px;
}
*,*::before,*::after{box-sizing:border-box}
html{-webkit-text-size-adjust:100%}
body{
  margin:0;
  font-family:Inter,system-ui,"PingFang SC","Microsoft YaHei","Noto Sans SC",sans-serif;
  font-size:15.5px;
  line-height:1.75;
  color:var(--ink);
  background:var(--bg);
  text-align:left;
  padding-top:0;
}
img{max-width:100%;display:block;border-radius:var(--r-img)}
a{color:var(--brand);text-decoration:none;transition:color .2s var(--ease)}
a:hover{color:var(--brand-700)}
button{font-family:inherit}
h1,h2,h3,h4{margin:0;font-weight:700;color:var(--ink);letter-spacing:.01em}
h1{font-size:clamp(28px,4vw,44px);line-height:1.25}
h2{font-size:clamp(22px,2.4vw,30px);line-height:1.3}
h3{font-size:18px;font-weight:600;line-height:1.45}
p{margin:0}
ul{margin:0;padding:0;list-style:none}
input,button{outline:none}
:focus-visible{outline:2px solid var(--brand);outline-offset:2px}
.container{
  width:100%;
  max-width:1280px;
  margin:0 auto;
  padding:0 32px;
}
.section{padding:88px 0;border-top:1px solid var(--line)}
.section:first-of-type{border-top:0}
.section-head{display:flex;align-items:flex-end;justify-content:space-between;gap:24px;margin-bottom:36px;flex-wrap:wrap}
.section-head .eyebrow{display:inline-flex;align-items:center;gap:8px;font-size:12px;font-weight:600;letter-spacing:.12em;color:var(--brand);text-transform:uppercase;margin-bottom:10px}
.eyebrow .dot{width:6px;height:6px;border-radius:50%;background:var(--accent);display:inline-block}
.section-lead{color:var(--ink-2);max-width:780px;margin-top:12px;font-size:16px}
.link-arrow{display:inline-flex;align-items:center;gap:6px;font-weight:600;font-size:14.5px}
.link-arrow i{transition:transform .2s var(--ease);font-size:12px}
.link-arrow:hover i{transform:translateX(4px)}

/* 顶部导航 */
.site-header{
  position:sticky;
  top:0;
  z-index:60;
  background:#fff;
  border-bottom:1px solid var(--line);
  transition:box-shadow .25s var(--ease),height .25s var(--ease);
}
.header-inner{
  display:grid;
  grid-template-columns:1fr 1fr;
  align-items:center;
  height:var(--header-h);
  gap:24px;
}
.header-left{display:flex;align-items:center;gap:32px;min-width:0}
.header-right{display:flex;align-items:center;justify-content:flex-end;gap:14px;min-width:0}
.brand{display:inline-flex;align-items:center;gap:10px;font-weight:700;font-size:16px;color:var(--ink);white-space:nowrap}
.brand:hover{color:var(--brand)}
.brand-mark{
  width:34px;height:34px;border-radius:10px;
  background:linear-gradient(140deg,var(--brand),var(--brand-700));
  color:#fff;display:inline-flex;align-items:center;justify-content:center;font-size:15px;
  box-shadow:0 6px 16px -8px rgba(36,86,199,.7);
  flex:0 0 auto;
}
.nav-links{display:flex;align-items:center;gap:6px}
.nav-link{
  position:relative;
  display:inline-flex;align-items:center;
  height:44px;padding:0 12px;
  font-size:14.5px;font-weight:600;color:var(--ink-2);
  border-radius:8px;
  transition:color .2s var(--ease),background .2s var(--ease);
  white-space:nowrap;
}
.nav-link:hover{color:var(--brand);background:var(--brand-50)}
.nav-link.is-active{color:var(--brand)}
.nav-link.is-active::after{
  content:"";position:absolute;left:12px;right:12px;bottom:6px;height:2px;border-radius:2px;background:var(--brand);
}
.search-box{
  display:flex;align-items:center;gap:8px;
  width:200px;height:42px;padding:0 14px;
  background:var(--bg);
  border:1px solid var(--line);
  border-radius:999px;
  transition:width .25s var(--ease),border-color .2s var(--ease),box-shadow .2s var(--ease);
}
.search-box:focus-within{width:280px;border-color:var(--brand);box-shadow:0 0 0 3px var(--brand-100);background:#fff}
.search-box i{color:var(--ink-3);font-size:13px}
.search-box input{border:0;background:transparent;width:100%;font-size:14px;color:var(--ink);height:100%}
.search-box input::placeholder{color:var(--ink-3)}
.mobile-toggle{
  display:none;
  width:44px;height:44px;border-radius:10px;
  border:1px solid var(--line);background:#fff;color:var(--ink);
  align-items:center;justify-content:center;font-size:16px;cursor:pointer;
}
.mobile-toggle:hover{border-color:var(--brand-100);color:var(--brand)}
.site-header.is-stuck{box-shadow:0 1px 0 var(--line),0 12px 26px -22px rgba(16,27,46,.4)}
.drawer{
  display:none;
  border-top:1px solid var(--line);
  background:#fff;
  padding:12px 20px 20px;
}
.drawer.is-open{display:block}
.drawer .nav-link{display:flex;width:100%;height:48px;justify-content:flex-start;font-size:15px;border-bottom:1px solid var(--line);border-radius:0}
.drawer .nav-link.is-active::after{display:none}
.drawer-cta{margin-top:14px;display:flex;gap:10px}

/* 按钮 */
.btn{
  display:inline-flex;align-items:center;justify-content:center;gap:8px;
  min-height:44px;padding:0 22px;
  border-radius:var(--r-btn);
  font-size:15px;font-weight:600;
  border:1px solid transparent;
  cursor:pointer;
  transition:background .2s var(--ease),color .2s var(--ease),border-color .2s var(--ease),transform .2s var(--ease),box-shadow .2s var(--ease);
}
.btn-sm{min-height:40px;padding:0 16px;font-size:14px}
.btn-primary{background:var(--brand);color:#fff;box-shadow:0 10px 22px -14px rgba(36,86,199,.85)}
.btn-primary:hover{background:var(--brand-700);color:#fff;transform:translateY(-2px)}
.btn-primary:active{transform:translateY(0)}
.btn-accent{background:var(--accent);color:#fff;box-shadow:0 10px 22px -14px rgba(240,138,36,.9)}
.btn-accent:hover{background:var(--accent-700);color:#fff;transform:translateY(-2px)}
.btn-ghost{background:#fff;color:var(--brand);border-color:var(--brand-100)}
.btn-ghost:hover{background:var(--brand-50);color:var(--brand-700);border-color:var(--brand-100)}
.btn:disabled,.btn.is-disabled{opacity:.5;pointer-events:none}

/* 面包屑 */
.crumb{background:#fff;border-bottom:1px solid var(--line)}
.crumb-inner{display:flex;align-items:center;gap:8px;height:52px;font-size:13.5px;color:var(--ink-3);overflow:hidden;white-space:nowrap}
.crumb-inner a{color:var(--ink-2)}
.crumb-inner a:hover{color:var(--brand)}
.crumb-inner .sep{color:var(--ink-3);font-size:11px}
.crumb-inner .current{color:var(--brand);font-weight:600}

/* 次级 Hero 窄色带 */
.sub-hero{position:relative;background:linear-gradient(120deg,#EEF3FE 0%,#E2EAFB 58%,#DCE7FC 100%);overflow:hidden}
.sub-hero::before{
  content:"";position:absolute;inset:0;
  background-image:linear-gradient(rgba(16,27,46,.05) 1px,transparent 1px),linear-gradient(90deg,rgba(16,27,46,.05) 1px,transparent 1px);
  background-size:48px 48px;opacity:.5;pointer-events:none;
}
.sub-hero-inner{position:relative;display:grid;grid-template-columns:1.6fr 1fr;gap:40px;align-items:center;min-height:262px;padding:44px 0}
.sub-hero .tag-top{display:inline-flex;align-items:center;gap:8px;background:#fff;border:1px solid var(--brand-100);color:var(--brand);font-size:12px;font-weight:600;padding:6px 12px;border-radius:999px;margin-bottom:16px}
.sub-hero h1{margin-bottom:14px}
.sub-hero .lede{color:var(--ink-2);font-size:16px;max-width:760px}
.sub-hero-figure{position:relative;border-radius:var(--r-card);overflow:hidden;box-shadow:var(--shadow-card);background:#fff}
.sub-hero-figure img{width:100%;height:190px;object-fit:cover;border-radius:0}
.sub-hero-figure figcaption{position:absolute;left:0;right:0;bottom:0;padding:12px 16px;font-size:13px;color:#fff;background:linear-gradient(180deg,rgba(16,27,46,0),rgba(16,27,46,.78))}
.hero-chips{display:flex;flex-wrap:wrap;gap:10px;margin-top:22px}
.chip{display:inline-flex;align-items:center;gap:7px;background:#fff;border:1px solid var(--line);color:var(--ink-2);font-size:13px;padding:8px 14px;border-radius:999px;transition:border-color .2s var(--ease),color .2s var(--ease)}
.chip i{color:var(--teal);font-size:12px}
.chip:hover{border-color:var(--brand-100);color:var(--brand)}

/* 主体双栏目录 */
.cat-layout{display:grid;grid-template-columns:268px 1fr;gap:48px;align-items:start}
.anchor-nav{position:sticky;top:calc(var(--header-h) + 20px);background:var(--card);border:1px solid var(--line);border-radius:var(--r-card);padding:22px;box-shadow:var(--shadow-card)}
.anchor-nav h2{font-size:14px;font-weight:700;letter-spacing:.06em;color:var(--ink-3);text-transform:uppercase;margin-bottom:14px}
.anchor-nav ul{display:flex;flex-direction:column;gap:2px}
.anchor-nav a{display:flex;align-items:center;gap:10px;min-height:44px;padding:0 10px;border-radius:8px;font-size:14.5px;font-weight:600;color:var(--ink-2);transition:background .2s var(--ease),color .2s var(--ease)}
.anchor-nav a:hover{background:var(--brand-50);color:var(--brand)}
.anchor-nav .num{font-size:12px;font-weight:700;color:var(--accent);min-width:20px}
.anchor-note{margin-top:18px;padding-top:16px;border-top:1px solid var(--line);font-size:13px;color:var(--ink-3);line-height:1.7}

.entry-group{margin-bottom:16px}
.entry-group-head{display:flex;align-items:baseline;gap:14px;padding:22px 0 14px;border-bottom:1px solid var(--line)}
.entry-group-head .g-num{font-size:13px;font-weight:700;color:var(--accent);letter-spacing:.08em}
.entry-group-head h2{font-size:22px}
.entry-group-head p{color:var(--ink-3);font-size:13.5px;margin-left:auto;text-align:right}
.entry-item{
  display:grid;grid-template-columns:56px 1fr;gap:20px;
  padding:26px 0;border-bottom:1px solid var(--line);
  transition:background .2s var(--ease);
}
.entry-item:hover{background:rgba(238,243,254,.6)}
.entry-num{
  font-size:19px;font-weight:700;color:var(--brand-100);
  font-variant-numeric:tabular-nums;line-height:1.2;
  padding-top:2px;
}
.entry-item:hover .entry-num{color:var(--brand)}
.entry-title{font-size:19px;font-weight:600;margin-bottom:8px}
.entry-title a{color:var(--ink)}
.entry-title a:hover{color:var(--brand)}
.entry-desc{color:var(--ink-2);max-width:760px;margin-bottom:12px}
.entry-meta{display:flex;flex-wrap:wrap;align-items:center;gap:10px}

/* 徽章与标签 */
.badge{display:inline-flex;align-items:center;gap:6px;font-size:12px;font-weight:600;padding:5px 11px;border-radius:999px;line-height:1.4}
.badge-brand{background:var(--brand-50);color:var(--brand)}
.badge-accent{background:#FDF1E3;color:var(--accent-700)}
.badge-soft{background:var(--bg-soft);color:var(--ink-2)}
.badge-teal{background:#E4F2F2;color:var(--teal)}
.tag-row{display:flex;flex-wrap:wrap;gap:10px}
.tag{display:inline-flex;align-items:center;gap:7px;padding:8px 15px;border:1px solid var(--line);border-radius:999px;background:#fff;font-size:13.5px;color:var(--ink-2);min-height:38px;transition:border-color .2s var(--ease),color .2s var(--ease),background .2s var(--ease)}
.tag:hover{border-color:var(--brand-100);color:var(--brand);background:var(--brand-50)}

/* 适用场景：非对称 */
.scene-layout{display:grid;grid-template-columns:1.05fr .95fr;gap:52px;align-items:center}
.scene-list{counter-reset:scene;display:flex;flex-direction:column}
.scene-item{display:flex;gap:18px;padding:20px 0;border-bottom:1px solid var(--line)}
.scene-item:first-child{padding-top:0}
.scene-idx{width:34px;height:34px;flex:0 0 auto;border-radius:10px;background:var(--brand-50);color:var(--brand);display:flex;align-items:center;justify-content:center;font-size:13px;font-weight:700}
.scene-item h3{margin-bottom:6px}
.scene-item p{color:var(--ink-2);font-size:14.5px}
.scene-figure{border-radius:var(--r-card);overflow:hidden;box-shadow:var(--shadow-card);background:var(--bg-soft)}
.scene-figure img{width:100%;height:360px;object-fit:cover;border-radius:0}

/* 流程 */
.flow-grid{display:grid;grid-template-columns:repeat(4,1fr);gap:20px}
.flow-card{background:var(--card);border:1px solid var(--line);border-radius:var(--r-card);padding:26px 22px;box-shadow:var(--shadow-card);transition:transform .2s var(--ease),box-shadow .2s var(--ease),border-color .2s var(--ease)}
.flow-card:hover{transform:translateY(-4px);box-shadow:var(--shadow-hover);border-color:var(--brand-100)}
.flow-card .f-num{font-size:13px;font-weight:700;color:var(--accent);letter-spacing:.1em;display:block;margin-bottom:12px}
.flow-card h3{margin-bottom:8px}
.flow-card p{color:var(--ink-2);font-size:14.5px}

/* FAQ */
.faq-list{border-top:1px solid var(--line)}
.faq-item{border-bottom:1px solid var(--line)}
.faq-item summary{
  display:flex;align-items:center;justify-content:space-between;gap:16px;
  min-height:56px;padding:14px 4px;cursor:pointer;list-style:none;
  font-size:16.5px;font-weight:600;color:var(--ink);
}
.faq-item summary::-webkit-details-marker{display:none}
.faq-item summary i{color:var(--brand);transition:transform .25s var(--ease);font-size:13px;flex:0 0 auto}
.faq-item[open] summary i{transform:rotate(180deg)}
.faq-item .faq-body{padding:0 4px 22px;color:var(--ink-2);max-width:820px;animation:fadeUp .28s var(--ease)}
@keyframes fadeUp{from{opacity:0;transform:translateY(-4px)}to{opacity:1;transform:translateY(0)}}

/* 交叉链接 */
.cross-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:20px}
.cross-card{display:flex;gap:16px;background:var(--card);border:1px solid var(--line);border-radius:var(--r-card);padding:22px;box-shadow:var(--shadow-card);transition:transform .2s var(--ease),box-shadow .2s var(--ease),border-color .2s var(--ease)}
.cross-card:hover{transform:translateY(-4px);box-shadow:var(--shadow-hover);border-color:var(--brand-100)}
.cross-card .c-ico{width:40px;height:40px;flex:0 0 auto;border-radius:12px;background:var(--brand-50);color:var(--brand);display:flex;align-items:center;justify-content:center;font-size:15px}
.cross-card h3{font-size:16.5px;margin-bottom:6px}
.cross-card h3 a{color:var(--ink)}
.cross-card h3 a:hover{color:var(--brand)}
.cross-card p{font-size:13.5px;color:var(--ink-3)}

/* CTA 条带 */
.cta-band{
  display:flex;align-items:center;justify-content:space-between;gap:28px;
  background:var(--brand-50);border:1px solid var(--brand-100);
  border-radius:var(--r-card);padding:30px 34px;
}
.cta-band .cta-copy h2{font-size:22px;margin-bottom:8px}
.cta-band .cta-copy p{color:var(--ink-2);font-size:14.5px}
.cta-actions{display:flex;gap:12px;flex-wrap:wrap}

/* 页脚 */
.site-footer{background:#fff;border-top:1px solid var(--line);padding-top:64px;margin-top:8px}
.footer-grid{display:grid;grid-template-columns:1.5fr 1fr 1fr 1.2fr;gap:40px;padding-bottom:44px}
.footer-brand .brand{margin-bottom:16px}
.footer-brand p{color:var(--ink-2);font-size:14px;max-width:340px}
.footer-title{display:flex;align-items:center;justify-content:space-between;font-size:15px;font-weight:700;margin-bottom:16px}
.footer-title i{display:none;font-size:12px;color:var(--ink-3);transition:transform .2s var(--ease)}
.footer-list{display:flex;flex-direction:column;gap:2px}
.footer-list a{display:inline-flex;align-items:center;min-height:40px;font-size:14.5px;color:var(--ink-2)}
.footer-list a:hover{color:var(--brand)}
.footer-contact li{display:flex;align-items:center;gap:10px;min-height:40px;font-size:14px;color:var(--ink-2)}
.footer-contact i{color:var(--brand);font-size:13px;width:16px;text-align:center}
.footer-bottom{display:flex;align-items:center;justify-content:space-between;gap:16px;padding:22px 0;border-top:1px solid var(--line);font-size:13px;color:var(--ink-3);flex-wrap:wrap}

/* 响应式 */
@media (max-width:1180px){
  .header-left{gap:20px}
  .nav-link{padding:0 9px;font-size:14px}
  .search-box{width:170px}
}
@media (max-width:1024px){
  .container{padding:0 24px}
  .section{padding:72px 0}
  .nav-links,.search-box{display:none}
  .mobile-toggle{display:inline-flex}
  .header-inner{grid-template-columns:1fr auto;height:56px}
  .sub-hero-inner{grid-template-columns:1fr;gap:26px;padding:40px 0;min-height:0}
  .sub-hero-figure img{height:210px}
  .cat-layout{grid-template-columns:1fr;gap:28px}
  .anchor-nav{position:static}
  .scene-layout{grid-template-columns:1fr;gap:30px}
  .scene-figure img{height:280px}
  .flow-grid{grid-template-columns:repeat(2,1fr)}
  .cross-grid{grid-template-columns:1fr 1fr}
  .footer-grid{grid-template-columns:1fr 1fr;gap:28px}
}
@media (max-width:768px){
  .section{padding:56px 0}
  .section-head{margin-bottom:24px}
  .entry-item{grid-template-columns:1fr;gap:8px}
  .entry-num{font-size:16px;color:var(--brand)}
  .entry-group-head{flex-wrap:wrap}
  .entry-group-head p{margin-left:0;text-align:left;width:100%}
  .cta-band{flex-direction:column;align-items:flex-start;padding:26px 22px}
  .cta-actions{width:100%}
  .cta-actions .btn{flex:1 1 auto}
}
@media (max-width:640px){
  .container{padding:0 20px}
  .brand span.brand-text{font-size:15px}
  h1{font-size:26px}
  .flow-grid{grid-template-columns:1fr}
  .cross-grid{grid-template-columns:1fr}
  .footer-grid{grid-template-columns:1fr;gap:0}
  .footer-group{border-bottom:1px solid var(--line);padding:16px 0}
  .footer-brand{border-bottom:1px solid var(--line)}
  .footer-title{margin-bottom:0;min-height:48px;cursor:pointer}
  .footer-title i{display:block}
  .footer-group .footer-list{display:none;padding-bottom:8px}
  .footer-group.is-open .footer-list{display:flex}
  .footer-group.is-open .footer-title i{transform:rotate(180deg)}
  .scene-figure img{height:220px}
  .footer-bottom{flex-direction:column;align-items:flex-start;gap:6px}
}

/* roulang page: article */
:root{
  --brand:#2456C7;
  --brand-700:#173F9E;
  --brand-50:#EEF3FE;
  --brand-100:#DCE7FC;
  --accent:#F08A24;
  --accent-700:#D9761A;
  --teal:#1E8E8E;
  --bg:#F6F8FC;
  --bg-soft:#EDF2FB;
  --card:#FFFFFF;
  --ink:#101B2E;
  --ink-2:#4A5A73;
  --ink-3:#8595AD;
  --line:#E3E9F2;
  --success:#1F9D62;
  --warning:#E0A020;
  --danger:#D8453C;
  --radius-card:16px;
  --radius-img:12px;
  --radius-btn:10px;
  --shadow-card:0 1px 2px rgba(16,27,46,.04), 0 8px 24px -14px rgba(16,27,46,.12);
  --shadow-hover:0 6px 16px rgba(16,27,46,.07), 0 20px 44px -20px rgba(16,27,46,.24);
  --container:1280px;
  --ease:cubic-bezier(.2,.7,.3,1);
}
*,*::before,*::after{box-sizing:border-box}
html{-webkit-text-size-adjust:100%;scroll-behavior:smooth}
body{
  margin:0;
  font-family:'Inter',system-ui,"PingFang SC","Microsoft YaHei","Noto Sans SC",sans-serif;
  font-size:15.5px;
  line-height:1.75;
  color:var(--ink-2);
  background:var(--bg);
  letter-spacing:.005em;
}
img{max-width:100%;display:block;height:auto}
a{color:inherit;text-decoration:none;transition:color .2s var(--ease),background-color .2s var(--ease),border-color .2s var(--ease)}
button{font:inherit;cursor:pointer;border:0;background:none}
input,select,textarea{font:inherit;color:inherit}
:focus-visible{outline:2px solid var(--brand);outline-offset:2px;border-radius:4px}
h1,h2,h3,h4{margin:0;color:var(--ink);font-weight:700;letter-spacing:.01em}
p{margin:0}
ul,ol{margin:0;padding:0;list-style:none}
.container{width:100%;max-width:var(--container);margin:0 auto;padding:0 32px}

/* ---------- header / nav ---------- */
.site-header{
  position:relative;
  z-index:60;
  background:#fff;
  border-bottom:1px solid var(--line);
  transition:box-shadow .25s var(--ease);
}
.site-header.is-stuck{
  position:fixed;
  top:0;left:0;right:0;
  box-shadow:0 1px 0 var(--line), 0 12px 28px -22px rgba(16,27,46,.45);
}
.site-header.is-stuck .header-grid{height:56px}
.header-grid{
  display:grid;
  grid-template-columns:1fr 1fr;
  align-items:center;
  gap:24px;
  min-height:64px;
  transition:min-height .25s var(--ease);
}
.header-left{display:flex;align-items:center;gap:28px;min-width:0}
.header-right{display:flex;align-items:center;justify-content:flex-end;gap:12px}
.brand{display:flex;align-items:center;gap:10px;font-weight:700;color:var(--ink);font-size:16px;white-space:nowrap}
.brand-mark{
  width:32px;height:32px;border-radius:9px;
  display:grid;place-items:center;
  background:var(--brand);color:#fff;font-size:14px;
  box-shadow:0 6px 16px -8px rgba(36,86,199,.8);
}
.brand:hover{color:var(--brand)}
.nav-links{display:flex;align-items:center;gap:6px}
.nav-link{
  position:relative;
  display:inline-flex;align-items:center;
  height:40px;padding:0 12px;
  font-size:14.5px;color:var(--ink-2);border-radius:8px;
  white-space:nowrap;
}
.nav-link::after{
  content:"";position:absolute;left:12px;right:12px;bottom:2px;height:2px;
  background:var(--brand);border-radius:2px;transform:scaleX(0);transform-origin:left;
  transition:transform .22s var(--ease);
}
.nav-link:hover{color:var(--brand);background:var(--brand-50)}
.nav-link:hover::after,.nav-link.is-active::after{transform:scaleX(1)}
.nav-link.is-active{color:var(--brand);font-weight:600}
.nav-extra{display:none}
.search-form{
  display:flex;align-items:center;gap:8px;
  width:240px;height:40px;padding:0 12px;
  background:var(--bg-soft);
  border:1px solid transparent;
  border-radius:999px;
  transition:border-color .2s var(--ease),background-color .2s var(--ease),width .25s var(--ease);
}
.search-form i{color:var(--ink-3);font-size:13px}
.search-form input{
  flex:1;min-width:0;border:0;background:transparent;outline:none;font-size:14px;
}
.search-form input::placeholder{color:var(--ink-3)}
.search-form:focus-within{background:#fff;border-color:var(--brand);box-shadow:0 0 0 3px var(--brand-50)}
.nav-toggle{
  display:none;width:44px;height:44px;border-radius:10px;
  color:var(--ink);font-size:17px;border:1px solid var(--line);background:#fff;
}
.nav-toggle:hover{color:var(--brand);border-color:var(--brand-100)}

/* ---------- buttons ---------- */
.btn{
  display:inline-flex;align-items:center;justify-content:center;gap:8px;
  min-height:44px;padding:0 20px;
  border-radius:var(--radius-btn);
  font-size:15px;font-weight:600;
  transition:transform .2s var(--ease),background-color .2s var(--ease),color .2s var(--ease),border-color .2s var(--ease),box-shadow .2s var(--ease);
}
.btn-sm{min-height:40px;padding:0 16px;font-size:14px;border-radius:9px}
.btn-primary{background:var(--brand);color:#fff;box-shadow:0 10px 22px -14px rgba(36,86,199,.95)}
.btn-primary:hover{background:var(--brand-700);transform:translateY(-2px)}
.btn-primary:active{transform:translateY(0)}
.btn-ghost{background:#fff;color:var(--brand);border:1px solid var(--brand-100)}
.btn-ghost:hover{background:var(--brand-50);border-color:var(--brand)}
.btn-accent{background:var(--accent);color:#fff}
.btn-accent:hover{background:var(--accent-700);transform:translateY(-2px)}
.btn-text{color:var(--brand);font-weight:600;min-height:auto;padding:0}
.btn-text i{transition:transform .2s var(--ease)}
.btn-text:hover i{transform:translateX(4px)}
.btn:disabled,.btn.is-disabled{opacity:.5;pointer-events:none}

/* ---------- badges ---------- */
.badge{
  display:inline-flex;align-items:center;gap:6px;
  padding:4px 12px;border-radius:999px;
  font-size:12px;font-weight:600;line-height:1.6;
}
.badge-brand{background:var(--brand-50);color:var(--brand)}
.badge-accent{background:rgba(240,138,36,.14);color:var(--accent-700)}
.badge-muted{background:var(--bg-soft);color:var(--ink-3);font-weight:500}
.badge-teal{background:rgba(30,142,142,.12);color:var(--teal)}

/* ---------- breadcrumb ---------- */
.crumb-wrap{background:#fff;border-bottom:1px solid var(--line)}
.crumb{display:flex;align-items:center;gap:8px;height:52px;font-size:13px;color:var(--ink-3);overflow:hidden}
.crumb a{color:var(--ink-2)}
.crumb a:hover{color:var(--brand)}
.crumb .sep{color:var(--line)}
.crumb .current{color:var(--ink);font-weight:600;white-space:nowrap;overflow:hidden;text-overflow:ellipsis;max-width:52vw}

/* ---------- article hero ---------- */
.article-hero{background:#fff;padding:44px 0 34px}
.article-hero h1{
  font-size:clamp(26px,3.6vw,40px);
  line-height:1.28;
  margin:16px 0 18px;
  max-width:880px;
}
.article-meta{display:flex;flex-wrap:wrap;align-items:center;gap:10px;font-size:13.5px;color:var(--ink-3);padding-bottom:22px;border-bottom:1px solid var(--line)}
.article-meta .dot{width:4px;height:4px;border-radius:50%;background:var(--ink-3);opacity:.6}

/* ---------- layout ---------- */
.section{padding:56px 0}
.section-plain{padding:48px 0}
.article-layout{display:grid;grid-template-columns:minmax(0,1fr) 320px;gap:56px;align-items:start}

/* ---------- article body ---------- */
.article-body{
  max-width:800px;
  font-size:16.5px;
  line-height:1.85;
  color:var(--ink-2);
  overflow-wrap:break-word;
}
.article-body p{margin:0 0 1.2em}
.article-body h2{
  font-size:clamp(21px,2.4vw,25px);
  line-height:1.45;
  color:var(--ink);
  margin:40px 0 16px;
  padding-left:14px;
  border-left:4px solid var(--brand);
  scroll-margin-top:96px;
}
.article-body h3{
  font-size:19px;font-weight:600;color:var(--ink);
  margin:28px 0 12px;scroll-margin-top:96px;
}
.article-body ul,.article-body ol{margin:0 0 1.2em;padding-left:2px}
.article-body ul li{position:relative;padding-left:20px;margin-bottom:8px}
.article-body ul li::before{
  content:"";position:absolute;left:2px;top:.72em;
  width:6px;height:6px;border-radius:2px;background:var(--brand);
}
.article-body ol{counter-reset:li}
.article-body ol li{position:relative;padding-left:28px;margin-bottom:8px;counter-increment:li}
.article-body ol li::before{
  content:counter(li);position:absolute;left:0;top:.2em;
  width:18px;height:18px;border-radius:5px;background:var(--brand-50);color:var(--brand);
  font-size:11px;font-weight:700;display:grid;place-items:center;
}
.article-body blockquote{
  margin:24px 0;padding:16px 20px;
  border-left:4px solid var(--brand);
  background:var(--brand-50);
  border-radius:0 12px 12px 0;
  color:var(--ink-2);
}
.article-body blockquote p:last-child{margin-bottom:0}
.article-body a{color:var(--brand);text-decoration:underline;text-underline-offset:3px}
.article-body a:hover{color:var(--brand-700)}
.article-body img{border-radius:var(--radius-img);margin:26px auto}
.article-body figure{margin:26px 0}
.article-body figcaption{text-align:center;font-size:13px;color:var(--ink-3);margin-top:10px}
.article-body table{width:100%;border-collapse:collapse;font-size:15px;margin:24px 0;background:#fff}
.article-body th,.article-body td{border:1px solid var(--line);padding:10px 14px;text-align:left}
.article-body th{background:var(--bg-soft);color:var(--ink);font-weight:600}
.article-body code{background:var(--bg-soft);padding:2px 6px;border-radius:6px;font-size:14px;color:var(--brand-700)}
.article-body pre{background:#0F1B30;color:#DCE7FC;padding:18px;border-radius:12px;overflow-x:auto;font-size:14px;line-height:1.7}
.article-body hr{border:0;border-top:1px solid var(--line);margin:32px 0}

/* ---------- empty state ---------- */
.empty-state{
  background:#fff;border:1px solid var(--line);border-radius:var(--radius-card);
  padding:56px 24px;text-align:center;box-shadow:var(--shadow-card);max-width:800px;
}
.empty-state i{font-size:28px;color:var(--brand);margin-bottom:14px;display:block}
.empty-state p{color:var(--ink-2);margin-bottom:20px}

/* ---------- sidebar ---------- */
.sidebar{display:flex;flex-direction:column;gap:20px}
.side-card{
  background:#fff;border:1px solid var(--line);border-radius:var(--radius-card);
  padding:20px;box-shadow:var(--shadow-card);
}
.side-card h3{font-size:15px;font-weight:700;margin-bottom:14px;display:flex;align-items:center;gap:8px}
.side-card h3 i{color:var(--brand);font-size:13px}
.sticky-block{position:sticky;top:96px}
.toc-list li{margin-bottom:2px}
.toc-list a{
  display:block;padding:8px 10px;border-radius:8px;
  font-size:14px;color:var(--ink-2);border-left:2px solid transparent;
  line-height:1.6;
}
.toc-list a:hover{background:var(--bg-soft);color:var(--brand)}
.toc-list a.lvl-3{padding-left:24px;font-size:13px;color:var(--ink-3)}
.toc-list a.is-current{color:var(--brand);font-weight:600;background:var(--brand-50);border-left-color:var(--brand)}
.hot-list li{border-bottom:1px solid var(--line)}
.hot-list li:last-child{border-bottom:0}
.hot-list a{display:flex;align-items:center;gap:10px;padding:12px 0;font-size:14px;color:var(--ink-2)}
.hot-list a:hover{color:var(--brand)}
.hot-list .num{
  width:24px;height:24px;flex:none;border-radius:7px;display:grid;place-items:center;
  background:var(--brand-50);color:var(--brand);font-size:12px;font-weight:700;
}
.side-cta{background:var(--brand-50);border-color:var(--brand-100)}
.side-cta p{font-size:14px;color:var(--ink-2);margin-bottom:16px}

/* ---------- tags & share band ---------- */
.tag-row{display:flex;flex-wrap:wrap;gap:10px;margin:34px 0 26px}
.tag{
  display:inline-flex;align-items:center;
  padding:6px 14px;border-radius:999px;
  background:#fff;border:1px solid var(--line);
  font-size:13px;color:var(--ink-2);
}
.tag:hover{color:var(--brand);border-color:var(--brand-100);background:var(--brand-50)}
.share-band{
  display:flex;align-items:center;justify-content:space-between;gap:20px;
  background:var(--brand-50);border:1px solid var(--brand-100);
  border-radius:var(--radius-card);padding:20px 24px;
}
.share-band .txt{font-size:15px;color:var(--ink);font-weight:600}
.share-band .sub{font-size:13px;color:var(--ink-2);font-weight:400;margin-top:4px}
.share-actions{display:flex;gap:10px;flex-wrap:wrap}
.toast{
  font-size:13px;color:var(--success);margin-top:8px;opacity:0;transition:opacity .25s var(--ease);
}
.toast.is-show{opacity:1}

/* ---------- prev next ---------- */
.pn-grid{display:grid;grid-template-columns:1fr 1fr;gap:20px;margin-top:36px}
.pn-card{
  display:block;background:#fff;border:1px solid var(--line);border-radius:var(--radius-card);
  padding:20px;box-shadow:var(--shadow-card);
  transition:transform .2s var(--ease),box-shadow .2s var(--ease),border-color .2s var(--ease);
}
.pn-card:hover{transform:translateY(-4px);border-color:var(--brand-100);box-shadow:var(--shadow-hover)}
.pn-card .label{font-size:12px;color:var(--ink-3);margin-bottom:8px;display:flex;align-items:center;gap:6px}
.pn-card h4{font-size:16px;line-height:1.5}
.pn-card p{font-size:13.5px;color:var(--ink-3);margin-top:8px}
.pn-card.next{text-align:right}
.pn-card.next .label{justify-content:flex-end}

/* ---------- cards / related ---------- */
.section-head{display:flex;align-items:flex-end;justify-content:space-between;gap:20px;margin-bottom:28px}
.section-head h2{font-size:clamp(21px,2.6vw,28px)}
.section-head p{font-size:14px;color:var(--ink-3);margin-top:8px;max-width:640px}
.card-grid{display:grid;grid-template-columns:repeat(3,minmax(0,1fr));gap:24px}
.card{
  display:flex;flex-direction:column;overflow:hidden;
  background:var(--card);border:1px solid var(--line);border-radius:var(--radius-card);
  box-shadow:var(--shadow-card);
  transition:transform .2s var(--ease),box-shadow .2s var(--ease),border-color .2s var(--ease);
}
.card:hover{transform:translateY(-4px);box-shadow:var(--shadow-hover);border-color:var(--brand-100)}
.card-media{position:relative;aspect-ratio:16/10;background:var(--bg-soft);overflow:hidden}
.card-media img{width:100%;height:100%;object-fit:cover;transition:transform .35s var(--ease)}
.card:hover .card-media img{transform:scale(1.04)}
.card-body{padding:18px 20px 20px;display:flex;flex-direction:column;gap:10px;flex:1}
.card-body h3{font-size:16.5px;line-height:1.5;display:-webkit-box;-webkit-line-clamp:2;-webkit-box-orient:vertical;overflow:hidden}
.card-body p{font-size:13.5px;color:var(--ink-2);display:-webkit-box;-webkit-line-clamp:2;-webkit-box-orient:vertical;overflow:hidden}
.card-meta{display:flex;align-items:center;gap:10px;margin-top:auto;font-size:12.5px;color:var(--ink-3)}

/* ---------- faq ---------- */
.faq-list{max-width:900px;border-top:1px solid var(--line)}
.faq-item{border-bottom:1px solid var(--line)}
.faq-item summary{
  display:flex;align-items:center;justify-content:space-between;gap:16px;
  min-height:56px;padding:14px 4px;cursor:pointer;list-style:none;
  font-size:16px;font-weight:600;color:var(--ink);
}
.faq-item summary::-webkit-details-marker{display:none}
.faq-item summary i{color:var(--brand);transition:transform .25s var(--ease);font-size:13px}
.faq-item[open] summary i{transform:rotate(180deg)}
.faq-item .ans{padding:0 4px 20px;font-size:15px;color:var(--ink-2);max-width:760px;animation:fadeIn .25s var(--ease)}
@keyframes fadeIn{from{opacity:0;transform:translateY(-4px)}to{opacity:1;transform:none}}

/* ---------- cta strip ---------- */
.cta-strip{
  background:#fff;border:1px solid var(--line);border-radius:20px;
  padding:36px;display:flex;align-items:center;justify-content:space-between;gap:28px;
  box-shadow:var(--shadow-card);
}
.cta-strip h2{font-size:clamp(20px,2.4vw,26px);margin-bottom:10px}
.cta-strip p{font-size:14.5px;color:var(--ink-2);max-width:620px}
.cta-actions{display:flex;gap:12px;flex-wrap:wrap}

/* ---------- footer ---------- */
.site-footer{background:#fff;border-top:1px solid var(--line);padding:56px 0 0;margin-top:8px}
.footer-grid{display:grid;grid-template-columns:1.4fr 1fr 1fr 1fr;gap:36px;padding-bottom:40px}
.footer-brand p{font-size:14px;color:var(--ink-2);margin-top:16px;max-width:320px}
.footer-title{
  font-size:14.5px;font-weight:700;margin-bottom:16px;display:flex;align-items:center;justify-content:space-between;
}
.footer-title i{display:none;font-size:12px;color:var(--ink-3);transition:transform .25s var(--ease)}
.footer-list li{margin-bottom:10px}
.footer-list a{font-size:14px;color:var(--ink-2)}
.footer-list a:hover{color:var(--brand)}
.footer-contact li{display:flex;align-items:flex-start;gap:10px;font-size:14px;color:var(--ink-2)}
.footer-contact i{color:var(--brand);margin-top:5px;font-size:13px}
.footer-bottom{
  display:flex;align-items:center;justify-content:space-between;gap:16px;flex-wrap:wrap;
  border-top:1px solid var(--line);padding:20px 0 26px;font-size:13px;color:var(--ink-3);
}

/* ---------- responsive ---------- */
@media (max-width:1023px){
  .container{padding:0 24px}
  .header-grid{grid-template-columns:auto 1fr;min-height:56px;gap:12px}
  .header-left{gap:12px}
  .search-form{display:none}
  .header-cta{display:none}
  .nav-toggle{display:inline-flex;align-items:center;justify-content:center}
  .nav-links{
    display:none;
    position:fixed;left:0;right:0;top:56px;
    flex-direction:column;align-items:stretch;gap:0;
    background:#fff;border-bottom:1px solid var(--line);
    padding:8px 20px 20px;
    box-shadow:0 18px 34px -24px rgba(16,27,46,.5);
    max-height:calc(100vh - 56px);overflow-y:auto;
  }
  .site-header.is-open .nav-links{display:flex}
  .nav-link{height:auto;padding:15px 4px;border-bottom:1px solid var(--line);border-radius:0;font-size:15px}
  .nav-link::after{display:none}
  .nav-extra{display:flex;flex-direction:column;gap:12px;padding-top:16px}
  .nav-extra .search-form{display:flex;width:100%}
  .article-layout{grid-template-columns:1fr;gap:36px}
  .sticky-block{position:static}
  .sidebar{order:2}
  .card-grid{grid-template-columns:repeat(2,minmax(0,1fr))}
  .footer-grid{grid-template-columns:1fr 1fr;gap:28px}
}
@media (max-width:767px){
  .container{padding:0 20px}
  .article-hero{padding:30px 0 24px}
  .section{padding:44px 0}
  .section-plain{padding:36px 0}
  .pn-grid{grid-template-columns:1fr}
  .pn-card.next{text-align:left}
  .pn-card.next .label{justify-content:flex-start}
  .cta-strip{flex-direction:column;align-items:flex-start;padding:26px 22px}
  .share-band{flex-direction:column;align-items:flex-start}
  .footer-grid{grid-template-columns:1fr;gap:0;padding-bottom:16px}
  .footer-group{border-bottom:1px solid var(--line);padding:16px 0}
  .footer-title{margin-bottom:0;cursor:pointer}
  .footer-title i{display:block}
  .footer-group.is-open .footer-title{margin-bottom:14px}
  .footer-group.is-open .footer-title i{transform:rotate(180deg)}
  .footer-list{display:none}
  .footer-group.is-open .footer-list{display:block}
  .footer-bottom{flex-direction:column;align-items:flex-start;gap:8px}
}
@media (max-width:560px){
  .card-grid{grid-template-columns:1fr}
  .article-body{font-size:16px}
  .crumb .current{max-width:60vw}
}
@media (max-width:768px){
  .article-body table{display:block;overflow-x:auto;white-space:nowrap}
}

/* roulang page: category2 */
:root{
  --brand:#2456C7;
  --brand-700:#173F9E;
  --brand-50:#EEF3FE;
  --brand-100:#DCE7FC;
  --accent:#F08A24;
  --accent-700:#D9761A;
  --teal:#1E8E8E;
  --bg:#F6F8FC;
  --bg-soft:#EDF2FB;
  --card:#FFFFFF;
  --ink:#101B2E;
  --ink-2:#4A5A73;
  --ink-3:#8595AD;
  --line:#E3E9F2;
  --success:#1F9D62;
  --warning:#E0A020;
  --danger:#D8453C;
  --radius-card:16px;
  --radius-img:12px;
  --radius-btn:10px;
  --shadow-card:0 1px 2px rgba(16,27,46,.04), 0 8px 24px -14px rgba(16,27,46,.12);
  --shadow-hover:0 2px 6px rgba(16,27,46,.06), 0 20px 40px -20px rgba(16,27,46,.26);
  --ease:cubic-bezier(.2,.7,.3,1);
}
*,*::before,*::after{box-sizing:border-box}
html{-webkit-text-size-adjust:100%;scroll-behavior:smooth}
body{
  margin:0;
  font-family:Inter,system-ui,"PingFang SC","Microsoft YaHei","Noto Sans SC",sans-serif;
  background:var(--bg);
  color:var(--ink);
  font-size:16px;
  line-height:1.75;
  -webkit-font-smoothing:antialiased;
}
img{max-width:100%;display:block}
a{color:inherit;text-decoration:none}
button{font:inherit;color:inherit;background:none;border:0;cursor:pointer}
input{font:inherit;color:inherit}
h1,h2,h3,h4,p,ul,ol{margin:0}
ul,ol{padding:0;list-style:none}
:focus-visible{outline:2px solid var(--brand);outline-offset:2px;border-radius:4px}
.container{width:100%;max-width:1280px;margin:0 auto;padding:0 32px}

/* ---------- 按钮 ---------- */
.btn{
  display:inline-flex;align-items:center;justify-content:center;gap:8px;
  min-height:44px;padding:0 22px;border-radius:var(--radius-btn);
  font-size:15px;font-weight:600;letter-spacing:.01em;
  transition:transform .2s var(--ease),background-color .2s var(--ease),border-color .2s var(--ease),box-shadow .2s var(--ease),color .2s var(--ease);
  white-space:nowrap;
}
.btn-primary{background:var(--brand);color:#fff;box-shadow:0 8px 20px -12px rgba(36,86,199,.9)}
.btn-primary:hover{background:var(--brand-700);transform:translateY(-2px)}
.btn-primary:active{transform:translateY(1px)}
.btn-accent{background:var(--accent);color:#fff}
.btn-accent:hover{background:var(--accent-700);transform:translateY(-2px)}
.btn-ghost{background:#fff;color:var(--brand);border:1px solid var(--brand-100)}
.btn-ghost:hover{background:var(--brand-50);transform:translateY(-2px)}
.btn-outline{background:transparent;color:#fff;border:1px solid rgba(255,255,255,.55)}
.btn-outline:hover{background:rgba(255,255,255,.12);transform:translateY(-2px)}
.btn-sm{min-height:42px;padding:0 16px;font-size:14px}
.btn[disabled],.btn.is-disabled{opacity:.5;pointer-events:none}
.link-arrow{
  display:inline-flex;align-items:center;gap:6px;
  color:var(--brand);font-size:14px;font-weight:600;
  transition:color .2s var(--ease);
}
.link-arrow i{transition:transform .2s var(--ease);font-size:12px}
.link-arrow:hover{color:var(--brand-700)}
.link-arrow:hover i{transform:translateX(4px)}

/* ---------- 徽章 / 标签 ---------- */
.badge{
  display:inline-flex;align-items:center;gap:5px;
  padding:3px 10px;border-radius:999px;
  font-size:12px;font-weight:600;line-height:1.7;
}
.badge-brand{background:var(--brand-50);color:var(--brand)}
.badge-accent{background:#FDF0E0;color:var(--accent-700)}
.badge-time{background:var(--bg-soft);color:var(--ink-3)}
.badge-teal{background:#E4F2F2;color:var(--teal)}
.tag{
  display:inline-flex;align-items:center;
  padding:2px 10px;border-radius:999px;
  background:var(--bg-soft);color:var(--ink-2);
  font-size:12px;font-weight:500;line-height:1.8;
}
.tag-teal{background:#E4F2F2;color:var(--teal)}

/* ---------- 顶部导航 ---------- */
.site-header{
  position:sticky;top:0;z-index:70;
  background:#fff;border-bottom:1px solid var(--line);
  transition:box-shadow .22s var(--ease);
}
.site-header.is-stuck{box-shadow:0 10px 26px -22px rgba(16,27,46,.55)}
.nav-inner{
  display:flex;align-items:center;gap:24px;
  min-height:64px;
  transition:min-height .22s var(--ease);
}
.site-header.is-stuck .nav-inner{min-height:56px}
.nav-left{flex:1 1 50%;min-width:0;display:flex;align-items:center;gap:22px}
.nav-right{flex:1 1 50%;min-width:0;display:flex;align-items:center;justify-content:flex-end;gap:12px}
.brand{display:inline-flex;align-items:center;gap:10px;font-weight:700;font-size:16px;color:var(--ink);white-space:nowrap}
.brand-mark{
  width:34px;height:34px;border-radius:10px;
  background:var(--brand);color:#fff;
  display:grid;place-items:center;font-size:15px;flex:none;
}
.nav-links{display:flex;align-items:center;gap:2px;min-width:0;overflow-x:auto;scrollbar-width:none}
.nav-links::-webkit-scrollbar{display:none}
.nav-link{
  position:relative;display:inline-flex;align-items:center;
  height:44px;padding:0 10px;font-size:13.5px;font-weight:500;
  color:var(--ink-2);white-space:nowrap;
  transition:color .2s var(--ease);
}
.nav-link:hover{color:var(--brand)}
.nav-link.is-active{color:var(--brand);font-weight:600}
.nav-link.is-active::after{
  content:'';position:absolute;left:10px;right:10px;bottom:6px;
  height:2px;border-radius:2px;background:var(--brand);
}
.nav-search{
  display:flex;align-items:center;gap:8px;
  width:240px;height:42px;padding:0 12px;
  background:var(--bg-soft);border:1px solid var(--line);border-radius:var(--radius-btn);
  transition:width .22s var(--ease),background-color .2s var(--ease),border-color .2s var(--ease),box-shadow .2s var(--ease);
}
.nav-search i{color:var(--ink-3);font-size:13px}
.nav-search input{flex:1;min-width:0;border:0;background:transparent;outline:none;font-size:14px}
.nav-search input::placeholder{color:var(--ink-3)}
.nav-search:focus-within{width:290px;background:#fff;border-color:var(--brand);box-shadow:0 0 0 3px var(--brand-50)}
.nav-search button{display:grid;place-items:center;width:28px;height:28px;border-radius:8px;color:var(--brand);transition:background-color .2s var(--ease)}
.nav-search button:hover{background:var(--brand-50)}
.icon-btn{
  display:none;width:44px;height:44px;border-radius:10px;
  align-items:center;justify-content:center;color:var(--ink-2);
  transition:background-color .2s var(--ease),color .2s var(--ease);
}
.icon-btn:hover{background:var(--bg-soft);color:var(--brand)}

/* ---------- 移动抽屉 ---------- */
.drawer{position:fixed;inset:0;z-index:90;opacity:0;pointer-events:none;transition:opacity .25s var(--ease)}
.drawer.is-open{opacity:1;pointer-events:auto}
.drawer-mask{position:absolute;inset:0;background:rgba(16,27,46,.45)}
.drawer-panel{
  position:absolute;top:0;right:0;bottom:0;width:min(88vw,340px);
  background:#fff;padding:18px 20px 28px;overflow-y:auto;
  transform:translateX(100%);transition:transform .28s var(--ease);
}
.drawer.is-open .drawer-panel{transform:none}
.drawer-head{display:flex;align-items:center;justify-content:space-between;padding-bottom:14px;border-bottom:1px solid var(--line)}
.drawer-title{font-size:13px;font-weight:600;color:var(--ink-3);letter-spacing:.08em}
.drawer-list{margin-top:10px}
.drawer-list a{
  display:flex;align-items:center;justify-content:space-between;
  min-height:48px;padding:0 4px;font-size:15px;color:var(--ink-2);
  border-bottom:1px solid var(--line);
}
.drawer-list a.is-active{color:var(--brand);font-weight:600}
.drawer-list a i{font-size:12px;color:var(--ink-3)}
.drawer-cta{margin-top:20px;display:grid;gap:10px}

/* ---------- 全屏搜索层 ---------- */
.search-layer{position:fixed;inset:0;z-index:100;background:#fff;padding:24px 20px;display:none}
.search-layer.is-open{display:block}
.search-layer .sl-head{display:flex;align-items:center;justify-content:space-between;margin-bottom:18px}
.search-layer .sl-field{
  display:flex;align-items:center;gap:10px;height:52px;padding:0 16px;
  border:1px solid var(--line);border-radius:12px;background:var(--bg-soft);
}
.search-layer .sl-field input{flex:1;border:0;background:none;outline:none;font-size:16px}
.search-layer .sl-hints{margin-top:20px;display:flex;flex-wrap:wrap;gap:10px}

/* ---------- 面包屑 ---------- */
.crumb{display:flex;align-items:center;gap:8px;flex-wrap:wrap;font-size:13px;color:rgba(255,255,255,.72);padding-top:26px}
.crumb a{color:rgba(255,255,255,.9);transition:color .2s var(--ease)}
.crumb a:hover{color:#fff}
.crumb .sep{opacity:.5}
.crumb .now{color:#fff;font-weight:600}

/* ---------- 次级 Hero ---------- */
.page-hero{
  position:relative;overflow:hidden;
  background:linear-gradient(120deg,var(--brand-700) 0%,#1B4CB4 62%,#2456C7 100%);
  color:#fff;
}
.page-hero::before{
  content:'';position:absolute;inset:0;pointer-events:none;
  background-image:linear-gradient(rgba(255,255,255,.07) 1px,transparent 1px),linear-gradient(90deg,rgba(255,255,255,.07) 1px,transparent 1px);
  background-size:46px 46px;
  opacity:.55;
}
.page-hero::after{
  content:'';position:absolute;right:-120px;top:-140px;width:420px;height:420px;border-radius:50%;
  background:radial-gradient(circle,rgba(240,138,36,.22),transparent 68%);
  pointer-events:none;
}
.page-hero .container{position:relative;z-index:2}
.hero-grid{
  display:grid;grid-template-columns:6fr 6fr;gap:48px;align-items:center;
  padding:8px 0 44px;
}
.eyebrow{
  display:inline-flex;align-items:center;gap:8px;
  font-size:12px;font-weight:600;letter-spacing:.1em;color:rgba(255,255,255,.82);
  text-transform:uppercase;
}
.eyebrow::before{content:'';width:22px;height:2px;border-radius:2px;background:var(--accent)}
.hero-title{font-size:clamp(28px,4vw,44px);font-weight:700;line-height:1.25;letter-spacing:.01em;margin-top:14px}
.hero-lead{margin-top:14px;max-width:640px;font-size:16px;line-height:1.8;color:rgba(255,255,255,.86)}
.hero-actions{display:flex;flex-wrap:wrap;gap:12px;margin-top:26px}
.hero-thumb{
  border-radius:var(--radius-card);overflow:hidden;
  border:1px solid rgba(255,255,255,.2);
  box-shadow:0 26px 60px -32px rgba(6,18,48,.85);
  background:rgba(255,255,255,.08);
}
.hero-thumb img{width:100%;aspect-ratio:16/10;object-fit:cover}

/* ---------- 更新条 ---------- */
.update-bar{
  position:relative;z-index:6;margin-top:-30px;
  display:flex;align-items:center;gap:14px;flex-wrap:wrap;
  background:var(--card);border:1px solid var(--line);border-radius:14px;
  padding:15px 22px;box-shadow:var(--shadow-card);
}
.update-dot{width:8px;height:8px;border-radius:50%;background:var(--success);flex:none;box-shadow:0 0 0 4px rgba(31,157,98,.14)}
.update-bar strong{font-size:14px;color:var(--ink)}
.update-bar span.update-text{font-size:14px;color:var(--ink-2)}
.update-bar .link-arrow{margin-left:auto}

/* ---------- 板块通用 ---------- */
.section{padding:88px 0;border-top:1px solid var(--line)}
.section-plain{border-top:0}
.section-soft{background:var(--bg-soft)}
.section-head{display:flex;align-items:flex-end;justify-content:space-between;gap:24px;margin-bottom:40px}
.section-head h2{font-size:clamp(22px,2.4vw,30px);font-weight:700;line-height:1.35;letter-spacing:.01em}
.section-head .sub{margin-top:10px;font-size:15px;color:var(--ink-2);max-width:720px}
.section-num{
  display:inline-flex;align-items:center;justify-content:center;
  min-width:30px;height:24px;padding:0 8px;margin-right:10px;
  border-radius:6px;background:var(--brand-50);color:var(--brand);
  font-size:12px;font-weight:700;vertical-align:middle;
}

/* ---------- 时间轴 ---------- */
.timeline{position:relative;padding-left:2px}
.timeline::before{
  content:'';position:absolute;left:21px;top:14px;bottom:24px;width:1px;background:var(--line);
}
.tl-item{position:relative;padding-left:66px;padding-bottom:26px}
.tl-node{
  position:absolute;left:9px;top:24px;
  width:26px;height:26px;border-radius:50%;
  display:grid;place-items:center;
  background:#fff;border:1px solid var(--line);
  font-size:10.5px;font-weight:700;color:var(--brand);letter-spacing:.02em;
  transition:background-color .2s var(--ease),border-color .2s var(--ease),color .2s var(--ease);
}
.tl-item:hover .tl-node{background:var(--brand-50);border-color:var(--brand-100)}
.tl-item.is-key .tl-node{background:var(--accent);border-color:var(--accent);color:#fff}
.tl-card{
  display:flex;gap:24px;align-items:flex-start;
  background:var(--card);border:1px solid var(--line);border-radius:var(--radius-card);
  padding:22px 24px;box-shadow:var(--shadow-card);
  transition:transform .2s var(--ease),box-shadow .2s var(--ease),border-color .2s var(--ease);
}
.tl-card:hover{transform:translateY(-4px);box-shadow:var(--shadow-hover);border-color:var(--brand-100)}
.tl-media{
  flex:none;width:158px;border-radius:var(--radius-img);overflow:hidden;
  background:var(--bg-soft);
}
.tl-media img{width:100%;aspect-ratio:4/3;object-fit:cover}
.tl-body{flex:1;min-width:0}
.tl-title{font-size:19px;font-weight:600;line-height:1.5}
.tl-desc{margin-top:8px;font-size:14.5px;color:var(--ink-2);line-height:1.8;max-width:760px}
.tl-tags{display:flex;flex-wrap:wrap;gap:8px;margin-top:14px}
.tl-foot{display:flex;align-items:center;justify-content:space-between;gap:16px;margin-top:16px;padding-top:14px;border-top:1px solid var(--line)}
.tl-foot .meta{font-size:12.5px;color:var(--ink-3)}

/* ---------- 上手路径 ---------- */
.path-grid{display:grid;grid-template-columns:repeat(2,minmax(0,1fr));gap:20px}
.path-card{
  display:flex;gap:18px;
  background:var(--card);border:1px solid var(--line);border-radius:var(--radius-card);
  padding:24px;box-shadow:var(--shadow-card);
  transition:transform .2s var(--ease),box-shadow .2s var(--ease),border-color .2s var(--ease);
}
.path-card:hover{transform:translateY(-4px);box-shadow:var(--shadow-hover);border-color:var(--brand-100)}
.path-num{
  flex:none;width:44px;height:44px;border-radius:12px;
  display:grid;place-items:center;
  background:var(--brand-50);color:var(--brand);
  font-size:16px;font-weight:700;
}
.path-card h3{font-size:17px;font-weight:600}
.path-card p{margin-top:8px;font-size:14.5px;color:var(--ink-2);line-height:1.8}

/* ---------- 横向轨道 ---------- */
.rail-wrap{position:relative}
.rail{
  display:grid;grid-auto-flow:column;grid-auto-columns:calc((100% - 48px) / 4);
  gap:16px;overflow-x:auto;padding:4px 2px 18px;
  scrollbar-width:none;scroll-snap-type:x mandatory;
}
.rail::-webkit-scrollbar{display:none}
.rail-card{
  scroll-snap-align:start;
  background:var(--card);border:1px solid var(--line);border-radius:var(--radius-card);
  padding:20px;box-shadow:var(--shadow-card);min-height:168px;
  display:flex;flex-direction:column;
  transition:transform .2s var(--ease),box-shadow .2s var(--ease),border-color .2s var(--ease);
}
.rail-card:hover{transform:translateY(-4px);box-shadow:var(--shadow-hover);border-color:var(--brand-100)}
.rail-card .rc-idx{font-size:12px;font-weight:700;color:var(--accent)}
.rail-card h3{margin-top:10px;font-size:16.5px;font-weight:600;line-height:1.5}
.rail-card p{margin-top:8px;font-size:13.5px;color:var(--ink-2);line-height:1.75}
.rail-card .rc-foot{margin-top:auto;padding-top:14px}
.rail-dots{display:flex;gap:6px;justify-content:center;margin-top:4px}
.rail-dots span{width:6px;height:6px;border-radius:50%;background:var(--line)}
.rail-dots span.on{background:var(--brand);width:18px;border-radius:3px}

/* ---------- FAQ ---------- */
.faq{max-width:900px}
.faq-item{
  background:var(--card);border:1px solid var(--line);border-radius:14px;
  padding:0 22px;margin-bottom:12px;box-shadow:var(--shadow-card);
  transition:border-color .2s var(--ease),box-shadow .2s var(--ease);
}
.faq-item:hover{border-color:var(--brand-100)}
.faq-item[open]{box-shadow:var(--shadow-hover)}
.faq-q{
  display:flex;align-items:center;justify-content:space-between;gap:18px;
  min-height:56px;padding:14px 0;
  font-size:16px;font-weight:600;line-height:1.6;cursor:pointer;
  list-style:none;
}
.faq-q::-webkit-details-marker{display:none}
.faq-q i{font-size:13px;color:var(--brand);transition:transform .25s var(--ease);flex:none}
.faq-item[open] .faq-q i{transform:rotate(180deg)}
.faq-a{padding:0 0 20px;font-size:14.5px;color:var(--ink-2);line-height:1.85;border-top:1px solid var(--line);padding-top:14px;animation:faqIn .28s var(--ease)}
@keyframes faqIn{from{opacity:0;transform:translateY(-4px)}to{opacity:1;transform:none}}

/* ---------- 相关分类 ---------- */
.rel-grid{display:grid;grid-template-columns:repeat(4,minmax(0,1fr));gap:18px}
.rel-card{
  display:block;background:var(--card);border:1px solid var(--line);border-radius:var(--radius-card);
  overflow:hidden;box-shadow:var(--shadow-card);
  transition:transform .2s var(--ease),box-shadow .2s var(--ease),border-color .2s var(--ease);
}
.rel-card:hover{transform:translateY(-4px);box-shadow:var(--shadow-hover);border-color:var(--brand-100)}
.rel-card img{width:100%;aspect-ratio:16/10;object-fit:cover;background:var(--bg-soft)}
.rel-body{padding:16px 18px 20px}
.rel-body h3{font-size:16px;font-weight:600;line-height:1.5}
.rel-body p{margin-top:6px;font-size:13px;color:var(--ink-3);line-height:1.7}
.rel-card.is-current{border-color:var(--brand);box-shadow:0 0 0 3px var(--brand-50),var(--shadow-card)}

/* ---------- CTA 条带 ---------- */
.cta-band{
  background:var(--brand-50);border:1px solid var(--brand-100);border-radius:var(--radius-card);
  padding:28px 32px;display:flex;align-items:center;gap:24px;justify-content:space-between;flex-wrap:wrap;
}
.cta-band h2{font-size:20px;font-weight:700}
.cta-band p{margin-top:8px;font-size:14.5px;color:var(--ink-2);max-width:640px}
.cta-actions{display:flex;gap:12px;flex-wrap:wrap}

/* ---------- 页脚 ---------- */
.site-footer{background:#0E1729;color:rgba(255,255,255,.72);margin-top:0;padding:64px 0 28px}
.footer-grid{display:grid;grid-template-columns:1.6fr 1fr 1fr 1.2fr;gap:40px}
.footer-brand .brand{color:#fff;font-size:17px}
.footer-brand .brand-mark{background:var(--brand)}
.footer-brand p{margin-top:16px;font-size:14px;line-height:1.85;color:rgba(255,255,255,.6);max-width:340px}
.footer-title{
  display:flex;align-items:center;justify-content:space-between;
  font-size:14px;font-weight:600;color:#fff;margin-bottom:16px;
}
.footer-title i{display:none;font-size:12px;transition:transform .2s var(--ease)}
.footer-list li{margin-bottom:10px}
.footer-list a{font-size:14px;color:rgba(255,255,255,.66);transition:color .2s var(--ease)}
.footer-list a:hover{color:#fff}
.footer-contact li{display:flex;gap:10px;align-items:flex-start;font-size:14px;color:rgba(255,255,255,.66)}
.footer-contact i{margin-top:5px;color:var(--accent);font-size:13px}
.footer-bottom{
  margin-top:44px;padding-top:20px;border-top:1px solid rgba(255,255,255,.12);
  display:flex;align-items:center;justify-content:space-between;gap:16px;flex-wrap:wrap;
  font-size:13px;color:rgba(255,255,255,.5);
}

/* ---------- 响应式 ---------- */
@media (max-width:1279px){
  .nav-link{font-size:13px;padding:0 8px}
  .nav-link.is-active::after{left:8px;right:8px}
  .nav-search{width:200px}
  .nav-search:focus-within{width:230px}
}
@media (max-width:1023px){
  .container{padding:0 24px}
  .nav-links,.nav-search{display:none}
  .icon-btn{display:inline-flex}
  .nav-left{flex:1 1 auto}
  .nav-right{flex:0 0 auto}
  .hero-grid{grid-template-columns:1fr;gap:30px;padding-bottom:36px}
  .hero-thumb{max-width:560px}
  .section{padding:72px 0}
  .rel-grid{grid-template-columns:repeat(2,minmax(0,1fr))}
  .rail{grid-auto-columns:calc((100% - 32px) / 3)}
  .footer-grid{grid-template-columns:1fr 1fr;gap:32px}
}
@media (max-width:767px){
  body{font-size:15.5px}
  .container{padding:0 20px}
  .section{padding:52px 0}
  .section-head{margin-bottom:26px;align-items:flex-start;flex-direction:column;gap:12px}
  .page-hero .crumb{padding-top:20px}
  .hero-grid{padding-bottom:30px}
  .hero-title{font-size:clamp(26px,7vw,34px)}
  .hero-actions .btn{flex:1 1 auto}
  .update-bar{padding:14px 16px;gap:10px}
  .update-bar .link-arrow{margin-left:0}
  .timeline::before{left:15px}
  .tl-item{padding-left:48px;padding-bottom:18px}
  .tl-node{left:3px;width:24px;height:24px;font-size:10px}
  .tl-card{flex-direction:column;gap:16px;padding:18px}
  .tl-media{width:100%}
  .tl-media img{aspect-ratio:16/9}
  .path-grid{grid-template-columns:1fr}
  .path-card{padding:20px}
  .rail{grid-auto-columns:82%}
  .rel-grid{grid-template-columns:1fr}
  .cta-band{padding:22px;flex-direction:column;align-items:flex-start}
  .cta-actions{width:100%}
  .cta-actions .btn{flex:1 1 auto}
  .footer-grid{grid-template-columns:1fr;gap:0}
  .footer-group{border-bottom:1px solid rgba(255,255,255,.1);padding:16px 0}
  .footer-title{margin-bottom:0;cursor:pointer;min-height:32px}
  .footer-title i{display:inline-block}
  .footer-group.is-open .footer-title{margin-bottom:12px}
  .footer-group.is-open .footer-title i{transform:rotate(180deg)}
  .footer-list{display:none}
  .footer-group.is-open .footer-list{display:block}
  .footer-brand{border-bottom:1px solid rgba(255,255,255,.1);padding-bottom:20px}
  .footer-brand p{max-width:none}
  .footer-bottom{margin-top:24px;flex-direction:column;align-items:flex-start;gap:8px}
}
@media (max-width:519px){
  .container{padding:0 16px}
  .brand{font-size:15px}
  .brand-mark{width:32px;height:32px}
  .hero-actions{flex-direction:column;align-items:stretch}
  .hero-actions .btn{width:100%}
  .rail{grid-auto-columns:88%}
}

/* roulang page: category3 */
:root{
    --brand:#2456C7;
    --brand-700:#173F9E;
    --brand-50:#EEF3FE;
    --brand-100:#DCE7FC;
    --accent:#F08A24;
    --accent-700:#D9761A;
    --teal:#1E8E8E;
    --bg:#F6F8FC;
    --bg-soft:#EDF2FB;
    --card:#FFFFFF;
    --ink:#101B2E;
    --ink-2:#4A5A73;
    --ink-3:#8595AD;
    --line:#E3E9F2;
    --success:#1F9D62;
    --warning:#E0A020;
    --danger:#D8453C;
    --radius-card:16px;
    --radius-img:12px;
    --radius-btn:10px;
    --shadow-card:0 1px 2px rgba(16,27,46,.04), 0 8px 24px -14px rgba(16,27,46,.12);
    --shadow-hover:0 2px 4px rgba(16,27,46,.05), 0 18px 36px -18px rgba(16,27,46,.22);
    --ease:cubic-bezier(.2,.7,.3,1);
  }

  *,*::before,*::after{box-sizing:border-box;}
  html{-webkit-text-size-adjust:100%;scroll-behavior:smooth;}
  body{
    margin:0;
    font-family:system-ui,"PingFang SC","Microsoft YaHei","Noto Sans SC",sans-serif;
    font-size:16px;
    line-height:1.75;
    color:var(--ink);
    background:var(--bg);
  }
  img{max-width:100%;display:block;}
  a{color:inherit;text-decoration:none;}
  button{font-family:inherit;cursor:pointer;}
  input{font-family:inherit;}
  h1,h2,h3,h4,p,ul,ol{margin:0;}
  ul,ol{padding:0;list-style:none;}
  :focus-visible{outline:2px solid var(--brand);outline-offset:2px;border-radius:6px;}

  .container{
    width:100%;
    max-width:1280px;
    margin:0 auto;
    padding-left:32px;
    padding-right:32px;
  }

  /* ---------- 顶部导航 ---------- */
  .site-header{
    position:sticky;
    top:0;
    z-index:60;
    background:#fff;
    border-bottom:1px solid var(--line);
    transition:box-shadow .25s var(--ease), padding .25s var(--ease);
  }
  .site-header.is-stuck{
    box-shadow:0 6px 18px -12px rgba(16,27,46,.28);
    border-bottom-color:transparent;
  }
  .header-inner{
    display:grid;
    grid-template-columns:6fr 6fr;
    align-items:center;
    gap:24px;
    min-height:64px;
    transition:min-height .25s var(--ease);
  }
  .site-header.is-stuck .header-inner{min-height:56px;}
  .header-left{display:flex;align-items:center;gap:26px;min-width:0;}
  .header-right{display:flex;align-items:center;justify-content:flex-end;gap:14px;}

  .brand{
    display:inline-flex;
    align-items:center;
    gap:10px;
    font-size:17px;
    font-weight:700;
    letter-spacing:.01em;
    color:var(--ink);
    white-space:nowrap;
  }
  .brand-mark{
    width:34px;height:34px;
    display:inline-flex;align-items:center;justify-content:center;
    border-radius:10px;
    background:linear-gradient(140deg,var(--brand) 0%,var(--brand-700) 100%);
    color:#fff;font-size:15px;
    flex:0 0 auto;
  }

  .nav-links{display:flex;align-items:center;gap:22px;min-width:0;}
  .nav-link{
    position:relative;
    display:inline-flex;
    align-items:center;
    min-height:44px;
    font-size:15px;
    color:var(--ink-2);
    transition:color .18s var(--ease);
    white-space:nowrap;
  }
  .nav-link::after{
    content:"";
    position:absolute;left:0;right:0;bottom:8px;
    height:2px;border-radius:2px;
    background:var(--brand);
    transform:scaleX(0);
    transform-origin:left;
    transition:transform .2s var(--ease);
  }
  .nav-link:hover{color:var(--brand);}
  .nav-link:hover::after{transform:scaleX(1);}
  .nav-link.is-active{color:var(--brand);font-weight:600;}
  .nav-link.is-active::after{transform:scaleX(1);}

  .nav-search{
    position:relative;
    display:flex;
    align-items:center;
    width:240px;
    height:42px;
    border:1px solid var(--line);
    border-radius:999px;
    background:var(--bg);
    transition:border-color .2s var(--ease), box-shadow .2s var(--ease), background .2s var(--ease);
  }
  .nav-search:focus-within{
    background:#fff;
    border-color:var(--brand);
    box-shadow:0 0 0 3px var(--brand-50);
  }
  .nav-search input{
    flex:1;height:100%;
    padding:0 8px 0 16px;
    border:0;background:transparent;outline:none;
    font-size:14px;color:var(--ink);
  }
  .nav-search input::placeholder{color:var(--ink-3);}
  .nav-search button{
    width:38px;height:38px;margin-right:2px;
    border:0;border-radius:999px;
    background:transparent;color:var(--ink-3);
    display:inline-flex;align-items:center;justify-content:center;
    transition:color .18s var(--ease), background .18s var(--ease);
  }
  .nav-search button:hover{color:var(--brand);background:var(--brand-50);}

  .btn{
    display:inline-flex;align-items:center;justify-content:center;gap:8px;
    min-height:44px;padding:0 20px;
    border-radius:var(--radius-btn);
    border:1px solid transparent;
    font-size:15px;font-weight:600;
    transition:transform .2s var(--ease), background .2s var(--ease), color .2s var(--ease), border-color .2s var(--ease), box-shadow .2s var(--ease);
  }
  .btn-primary{background:var(--brand);color:#fff;box-shadow:0 10px 22px -14px rgba(36,86,199,.9);}
  .btn-primary:hover{background:var(--brand-700);transform:translateY(-2px);}
  .btn-primary:active{transform:translateY(1px);}
  .btn-ghost{background:#fff;color:var(--brand);border-color:var(--brand-100);}
  .btn-ghost:hover{background:var(--brand-50);border-color:var(--brand);}
  .btn-accent{background:var(--accent);color:#fff;}
  .btn-accent:hover{background:var(--accent-700);transform:translateY(-2px);}
  .btn-sm{min-height:40px;padding:0 16px;font-size:14px;}
  .btn[disabled],.btn.is-disabled{opacity:.5;pointer-events:none;}

  .link-arrow{
    display:inline-flex;align-items:center;gap:6px;
    font-size:14px;font-weight:600;color:var(--brand);
  }
  .link-arrow i{transition:transform .2s var(--ease);}
  .link-arrow:hover i{transform:translateX(4px);}

  .nav-toggle{
    display:none;
    width:44px;height:44px;
    border:1px solid var(--line);border-radius:10px;
    background:#fff;color:var(--ink);
    align-items:center;justify-content:center;
  }
  .nav-search-icon{
    display:none;
    width:44px;height:44px;
    border:1px solid var(--line);border-radius:10px;
    background:#fff;color:var(--ink-2);
    align-items:center;justify-content:center;
  }

  /* 移动端抽屉 */
  .drawer-mask{
    position:fixed;inset:0;
    background:rgba(16,27,46,.42);
    opacity:0;visibility:hidden;
    transition:opacity .25s var(--ease), visibility .25s var(--ease);
    z-index:80;
  }
  .drawer-mask.is-open{opacity:1;visibility:visible;}

  .search-overlay{
    position:fixed;inset:0;z-index:90;
    background:#fff;
    padding:24px 20px;
    display:none;
  }
  .search-overlay.is-open{display:block;}
  .search-overlay-top{display:flex;align-items:center;gap:12px;margin-bottom:20px;}
  .search-overlay input{
    flex:1;height:48px;
    border:1px solid var(--line);border-radius:10px;
    padding:0 16px;font-size:15px;outline:none;
  }
  .search-overlay input:focus{border-color:var(--brand);box-shadow:0 0 0 3px var(--brand-50);}
  .search-overlay-close{
    width:44px;height:44px;border:1px solid var(--line);border-radius:10px;background:#fff;color:var(--ink-2);
  }

  /* ---------- 面包屑 ---------- */
  .crumb-bar{background:#fff;border-bottom:1px solid var(--line);}
  .crumb{
    display:flex;align-items:center;gap:8px;
    min-height:52px;
    font-size:13px;color:var(--ink-3);
    overflow:hidden;white-space:nowrap;
  }
  .crumb a{color:var(--ink-2);transition:color .18s var(--ease);}
  .crumb a:hover{color:var(--brand);}
  .crumb .sep{color:#C7D2E0;}
  .crumb .current{color:var(--ink-3);}
  .crumb li{display:inline-flex;align-items:center;gap:8px;}

  /* ---------- 次级 Hero ---------- */
  .sub-hero{
    position:relative;
    overflow:hidden;
    background:linear-gradient(100deg,#fff 0%,var(--brand-50) 52%,var(--bg-soft) 100%);
    border-bottom:1px solid var(--line);
  }
  .sub-hero::before{
    content:"";
    position:absolute;inset:0;
    background-image:linear-gradient(to right,rgba(16,27,46,.045) 1px,transparent 1px),
                     linear-gradient(to bottom,rgba(16,27,46,.045) 1px,transparent 1px);
    background-size:48px 48px;
    opacity:.7;
    pointer-events:none;
  }
  .sub-hero-inner{
    position:relative;
    display:grid;
    grid-template-columns:7fr 5fr;
    align-items:center;
    gap:40px;
    min-height:264px;
    padding-top:44px;
    padding-bottom:44px;
  }
  .sub-hero h1{
    font-size:clamp(26px,3.2vw,38px);
    font-weight:700;
    line-height:1.28;
    letter-spacing:.01em;
  }
  .sub-hero .lead{
    margin-top:16px;
    max-width:620px;
    font-size:16px;
    color:var(--ink-2);
    line-height:1.8;
  }
  .eyebrow{
    display:inline-flex;align-items:center;gap:8px;
    font-size:12px;font-weight:600;letter-spacing:.08em;
    color:var(--brand);
    background:#fff;
    border:1px solid var(--brand-100);
    border-radius:999px;
    padding:6px 14px;
  }
  .eyebrow .dot{width:6px;height:6px;border-radius:50%;background:var(--accent);}
  .sub-hero-media{
    position:relative;
    border-radius:20px;
    overflow:hidden;
    aspect-ratio:16/10;
    border:1px solid #fff;
    box-shadow:0 20px 44px -26px rgba(16,27,46,.42);
  }
  .sub-hero-media img{width:100%;height:100%;object-fit:cover;}
  .sub-hero-badge{
    position:absolute;left:16px;bottom:16px;
    background:rgba(255,255,255,.94);
    border:1px solid var(--line);
    border-radius:12px;
    padding:10px 14px;
    font-size:12px;color:var(--ink-2);
    display:flex;align-items:center;gap:8px;
  }

  /* ---------- 通用板块 ---------- */
  .section{padding-top:88px;padding-bottom:88px;}
  .section-tight{padding-top:64px;padding-bottom:64px;}
  .section-alt{background:var(--bg-soft);border-top:1px solid var(--line);border-bottom:1px solid var(--line);}
  .section-head{display:flex;align-items:flex-end;justify-content:space-between;gap:24px;margin-bottom:36px;}
  .section-head h2{
    font-size:clamp(22px,2.4vw,28px);
    font-weight:700;
    line-height:1.35;
    letter-spacing:.01em;
  }
  .section-head p{margin-top:10px;font-size:15px;color:var(--ink-2);max-width:720px;}
  .section-head .more{flex:0 0 auto;}

  /* ---------- 筛选标签 ---------- */
  .filter-row{
    display:flex;flex-wrap:wrap;gap:10px;
    padding:6px 0 28px;
    border-bottom:1px solid var(--line);
    margin-bottom:32px;
  }
  .filter-chip{
    display:inline-flex;align-items:center;gap:8px;
    min-height:40px;padding:0 18px;
    border-radius:999px;
    border:1px solid var(--line);
    background:#fff;
    font-size:14px;color:var(--ink-2);
    transition:background .2s var(--ease), color .2s var(--ease), border-color .2s var(--ease), transform .2s var(--ease);
  }
  .filter-chip:hover{border-color:var(--brand-100);color:var(--brand);background:var(--brand-50);}
  .filter-chip.is-active{background:var(--brand);border-color:var(--brand);color:#fff;}
  .filter-chip .count{
    font-size:12px;
    background:var(--brand-50);color:var(--brand);
    border-radius:999px;padding:1px 8px;
  }
  .filter-chip.is-active .count{background:rgba(255,255,255,.22);color:#fff;}

  /* ---------- 卡片网格 ---------- */
  .card-grid{
    display:grid;
    grid-template-columns:repeat(3,minmax(0,1fr));
    gap:24px;
  }
  .entry-card{
    display:flex;flex-direction:column;
    background:var(--card);
    border:1px solid var(--line);
    border-radius:var(--radius-card);
    box-shadow:var(--shadow-card);
    overflow:hidden;
    transition:transform .2s var(--ease), box-shadow .2s var(--ease), border-color .2s var(--ease);
  }
  .entry-card:hover{transform:translateY(-4px);box-shadow:var(--shadow-hover);border-color:var(--brand-100);}
  .entry-card.is-hidden{display:none;}
  .entry-media{position:relative;aspect-ratio:16/9;background:var(--bg-soft);overflow:hidden;}
  .entry-media img{width:100%;height:100%;object-fit:cover;transition:transform .3s var(--ease);}
  .entry-card:hover .entry-media img{transform:scale(1.04);}
  .entry-body{padding:20px 20px 16px;flex:1;display:flex;flex-direction:column;gap:12px;}
  .entry-title{
    font-size:18px;font-weight:600;line-height:1.5;
    display:-webkit-box;-webkit-line-clamp:2;-webkit-box-orient:vertical;overflow:hidden;
  }
  .entry-desc{
    font-size:14px;color:var(--ink-2);line-height:1.75;
    display:-webkit-box;-webkit-line-clamp:3;-webkit-box-orient:vertical;overflow:hidden;
  }
  .entry-foot{
    display:flex;align-items:center;justify-content:space-between;gap:12px;
    padding:14px 20px 18px;
    border-top:1px solid var(--line);
    font-size:13px;color:var(--ink-3);
  }
  .tag{
    display:inline-flex;align-items:center;
    font-size:12px;font-weight:600;
    padding:3px 10px;border-radius:999px;
    background:var(--brand-50);color:var(--brand);
    white-space:nowrap;
  }
  .tag-teal{background:rgba(30,142,142,.12);color:var(--teal);}
  .tag-accent{background:rgba(240,138,36,.14);color:var(--accent-700);}
  .tag-grey{background:#F1F4F9;color:var(--ink-3);}
  .tag-row{display:flex;flex-wrap:wrap;gap:8px;}

  .empty-state{
    display:none;
    flex-direction:column;align-items:center;gap:14px;
    padding:48px 20px;
    text-align:center;
    color:var(--ink-3);
  }
  .empty-state.is-show{display:flex;}

  /* ---------- 编号要点 ---------- */
  .point-grid{
    display:grid;
    grid-template-columns:7fr 5fr;
    gap:48px;
    align-items:start;
  }
  .point-list{border-top:1px solid var(--line);}
  .point-item{
    display:grid;
    grid-template-columns:64px 1fr;
    gap:20px;
    padding:24px 8px;
    border-bottom:1px solid var(--line);
    transition:background .2s var(--ease);
    border-radius:8px;
  }
  .point-item:hover{background:#fff;}
  .point-num{
    font-size:20px;font-weight:700;color:var(--accent);
    letter-spacing:.02em;
  }
  .point-item h3{font-size:18px;font-weight:600;margin-bottom:8px;}
  .point-item p{font-size:14.5px;color:var(--ink-2);}
  .aside-card{
    background:#fff;
    border:1px solid var(--line);
    border-radius:var(--radius-card);
    box-shadow:var(--shadow-card);
    padding:26px;
  }
  .aside-card h3{font-size:16px;font-weight:700;margin-bottom:14px;}
  .aside-list li{
    display:flex;gap:10px;align-items:flex-start;
    font-size:14px;color:var(--ink-2);
    padding:10px 0;
    border-bottom:1px dashed var(--line);
  }
  .aside-list li:last-child{border-bottom:0;}
  .aside-list i{color:var(--brand);margin-top:5px;font-size:12px;}
  .aside-media{margin-top:18px;border-radius:var(--radius-img);overflow:hidden;aspect-ratio:4/3;background:var(--bg-soft);}
  .aside-media img{width:100%;height:100%;object-fit:cover;}

  /* ---------- 流程时间轴 ---------- */
  .flow{
    display:grid;
    grid-template-columns:repeat(4,minmax(0,1fr));
    gap:20px;
  }
  .flow-item{
    position:relative;
    background:#fff;
    border:1px solid var(--line);
    border-radius:var(--radius-card);
    padding:24px 22px;
    box-shadow:var(--shadow-card);
    transition:transform .2s var(--ease), box-shadow .2s var(--ease), border-color .2s var(--ease);
  }
  .flow-item:hover{transform:translateY(-4px);box-shadow:var(--shadow-hover);border-color:var(--brand-100);}
  .flow-step{
    display:inline-flex;align-items:center;gap:8px;
    font-size:12px;font-weight:600;color:var(--accent-700);
    background:rgba(240,138,36,.12);
    border-radius:999px;padding:4px 12px;
    margin-bottom:14px;
  }
  .flow-item h3{font-size:17px;font-weight:600;margin-bottom:8px;}
  .flow-item p{font-size:14px;color:var(--ink-2);}
  .flow-connector{
    position:absolute;top:44px;right:-12px;
    width:24px;height:1px;background:var(--line);
  }
  .flow-item:last-child .flow-connector{display:none;}

  /* ---------- 场景图文 ---------- */
  .scene-row{
    display:grid;
    grid-template-columns:6fr 6fr;
    gap:44px;
    align-items:center;
    padding:32px 0;
    border-bottom:1px solid var(--line);
  }
  .scene-row:last-child{border-bottom:0;}
  .scene-row.reverse .scene-media{order:2;}
  .scene-media{
    border-radius:var(--radius-card);
    overflow:hidden;
    aspect-ratio:16/10;
    background:var(--bg-soft);
    border:1px solid var(--line);
  }
  .scene-media img{width:100%;height:100%;object-fit:cover;}
  .scene-text h3{font-size:21px;font-weight:700;margin-bottom:12px;}
  .scene-text p{font-size:15px;color:var(--ink-2);max-width:640px;}
  .scene-text ul{margin-top:16px;display:grid;gap:10px;}
  .scene-text li{
    display:flex;gap:10px;align-items:flex-start;
    font-size:14.5px;color:var(--ink-2);
  }
  .scene-text li::before{
    content:"";flex:0 0 auto;
    width:6px;height:6px;border-radius:50%;
    background:var(--brand);
    margin-top:9px;
  }

  /* ---------- FAQ ---------- */
  .faq-list{
    background:#fff;
    border:1px solid var(--line);
    border-radius:var(--radius-card);
    box-shadow:var(--shadow-card);
    overflow:hidden;
  }
  .faq-item{border-bottom:1px solid var(--line);}
  .faq-item:last-child{border-bottom:0;}
  .faq-item summary{
    display:flex;align-items:center;justify-content:space-between;gap:16px;
    min-height:56px;
    padding:16px 24px;
    font-size:16px;font-weight:600;
    cursor:pointer;
    list-style:none;
    transition:background .2s var(--ease), color .2s var(--ease);
  }
  .faq-item summary::-webkit-details-marker{display:none;}
  .faq-item summary:hover{background:var(--brand-50);color:var(--brand-700);}
  .faq-item summary i{
    flex:0 0 auto;color:var(--ink-3);font-size:13px;
    transition:transform .25s var(--ease), color .25s var(--ease);
  }
  .faq-item[open] summary i{transform:rotate(180deg);color:var(--brand);}
  .faq-answer{
    padding:0 24px 22px;
    font-size:14.5px;color:var(--ink-2);
    line-height:1.85;
    animation:fadeIn .25s var(--ease);
  }
  @keyframes fadeIn{from{opacity:0;transform:translateY(-4px);}to{opacity:1;transform:none;}}

  /* ---------- 相关分类 ---------- */
  .cross-grid{
    display:grid;
    grid-template-columns:repeat(4,minmax(0,1fr));
    gap:20px;
  }
  .cross-item{
    display:flex;flex-direction:column;gap:10px;
    background:#fff;
    border:1px solid var(--line);
    border-radius:var(--radius-card);
    padding:22px;
    box-shadow:var(--shadow-card);
    transition:transform .2s var(--ease), box-shadow .2s var(--ease), border-color .2s var(--ease);
  }
  .cross-item:hover{transform:translateY(-4px);box-shadow:var(--shadow-hover);border-color:var(--brand-100);}
  .cross-item .idx{font-size:12px;font-weight:700;color:var(--accent);letter-spacing:.1em;}
  .cross-item h3{font-size:16px;font-weight:600;}
  .cross-item p{font-size:13.5px;color:var(--ink-2);}
  .cross-item .link-arrow{margin-top:auto;}

  /* ---------- CTA 条带 ---------- */
  .cta-band{
    display:flex;align-items:center;justify-content:space-between;gap:28px;
    background:var(--brand-50);
    border:1px solid var(--brand-100);
    border-radius:var(--radius-card);
    padding:28px 32px;
  }
  .cta-band h2{font-size:20px;font-weight:700;margin-bottom:6px;}
  .cta-band p{font-size:14.5px;color:var(--ink-2);}
  .cta-actions{display:flex;gap:12px;flex:0 0 auto;}
  .copy-tip{font-size:13px;color:var(--success);margin-top:8px;min-height:20px;}

  /* ---------- 页脚 ---------- */
  .site-footer{
    background:#fff;
    border-top:1px solid var(--line);
    padding-top:64px;
    margin-top:8px;
  }
  .footer-grid{
    display:grid;
    grid-template-columns:1.6fr 1fr 1fr 1.1fr;
    gap:40px;
    padding-bottom:44px;
  }
  .footer-brand .brand{margin-bottom:16px;}
  .footer-brand p{font-size:14px;color:var(--ink-2);max-width:340px;}
  .footer-title{
    display:flex;align-items:center;justify-content:space-between;
    font-size:15px;font-weight:600;
    margin-bottom:18px;
  }
  .footer-title i{display:none;font-size:12px;color:var(--ink-3);transition:transform .25s var(--ease);}
  .footer-list{display:grid;gap:12px;}
  .footer-list a{font-size:14px;color:var(--ink-2);transition:color .18s var(--ease);}
  .footer-list a:hover{color:var(--brand);}
  .footer-contact li{display:flex;align-items:center;gap:10px;font-size:14px;color:var(--ink-2);}
  .footer-contact i{color:var(--brand);font-size:13px;}
  .footer-bottom{
    display:flex;align-items:center;justify-content:space-between;gap:16px;
    padding:20px 0 28px;
    border-top:1px solid var(--line);
    font-size:13px;color:var(--ink-3);
  }

  /* ---------- 响应式 ---------- */
  @media (max-width:1180px){
    .nav-links{gap:16px;}
    .nav-search{width:200px;}
  }
  @media (max-width:1023px){
    .container{padding-left:24px;padding-right:24px;}
    .header-inner{display:flex;justify-content:space-between;min-height:56px;gap:12px;}
    .header-left{gap:12px;}
    .nav-search{display:none;}
    .nav-search-icon{display:inline-flex;}
    .nav-toggle{display:inline-flex;}
    .header-right .btn{padding:0 14px;font-size:14px;}

    .nav-links{
      position:fixed;
      top:0;right:0;
      height:100%;
      width:min(320px,84vw);
      background:#fff;
      flex-direction:column;
      align-items:stretch;
      gap:0;
      padding:88px 22px 32px;
      transform:translateX(102%);
      transition:transform .28s var(--ease);
      z-index:85;
      box-shadow:-18px 0 40px -26px rgba(16,27,46,.4);
      overflow-y:auto;
    }
    .nav-links.is-open{transform:none;}
    .nav-link{
      min-height:52px;
      font-size:16px;
      border-bottom:1px solid var(--line);
    }
    .nav-link::after{display:none;}
    .nav-link.is-active{color:var(--brand);}

    .sub-hero-inner{grid-template-columns:1fr;gap:28px;padding-top:36px;padding-bottom:36px;min-height:0;}
    .sub-hero-media{aspect-ratio:16/9;}

    .section{padding-top:64px;padding-bottom:64px;}
    .point-grid{grid-template-columns:1fr;gap:32px;}
    .flow{grid-template-columns:repeat(2,minmax(0,1fr));}
    .flow-connector{display:none;}
    .scene-row{grid-template-columns:1fr;gap:24px;}
    .scene-row.reverse .scene-media{order:0;}
    .cross-grid{grid-template-columns:repeat(2,minmax(0,1fr));}
    .footer-grid{grid-template-columns:1fr 1fr;gap:32px;}
  }
  @media (max-width:768px){
    .card-grid{grid-template-columns:repeat(2,minmax(0,1fr));gap:18px;}
    .cta-band{flex-direction:column;align-items:flex-start;gap:20px;padding:24px;}
    .cta-actions{width:100%;}
    .cta-actions .btn{flex:1;}
  }
  @media (max-width:640px){
    .container{padding-left:20px;padding-right:20px;}
    body{font-size:15.5px;}
    .brand span:last-child{font-size:15px;}
    .card-grid{grid-template-columns:1fr;gap:18px;}
    .flow{grid-template-columns:1fr;}
    .cross-grid{grid-template-columns:1fr;}
    .point-item{grid-template-columns:44px 1fr;gap:14px;}
    .section{padding-top:48px;padding-bottom:48px;}
    .section-head{flex-direction:column;align-items:flex-start;gap:12px;}
    .footer-grid{grid-template-columns:1fr;gap:0;}
    .footer-group{border-bottom:1px solid var(--line);padding:18px 0;}
    .footer-brand{border-bottom:1px solid var(--line);padding-bottom:22px;padding-top:0;}
    .footer-title{margin-bottom:0;}
    .footer-title i{display:inline-block;}
    .footer-group .footer-list{max-height:0;overflow:hidden;transition:max-height .3s var(--ease);}
    .footer-group.is-open .footer-list{max-height:320px;margin-top:16px;}
    .footer-group.is-open .footer-title i{transform:rotate(180deg);}
    .footer-bottom{flex-direction:column;align-items:flex-start;gap:8px;}
    .sub-hero-badge{left:12px;bottom:12px;font-size:11.5px;padding:8px 12px;}
  }

/* roulang page: category4 */
:root{
    --brand:#2456C7;
    --brand-700:#173F9E;
    --brand-50:#EEF3FE;
    --brand-100:#DCE7FC;
    --accent:#F08A24;
    --accent-hover:#D9761A;
    --teal:#1E8E8E;
    --bg:#F6F8FC;
    --bg-soft:#EDF2FB;
    --card:#FFFFFF;
    --ink:#101B2E;
    --ink-2:#4A5A73;
    --ink-3:#8595AD;
    --line:#E3E9F2;
    --success:#1F9D62;
    --warning:#E0A020;
    --danger:#D8453C;
    --radius-card:16px;
    --radius-img:12px;
    --radius-btn:10px;
    --shadow-card:0 1px 2px rgba(16,27,46,.04), 0 8px 24px -14px rgba(16,27,46,.12);
    --shadow-hover:0 2px 4px rgba(16,27,46,.05), 0 18px 36px -18px rgba(16,27,46,.20);
    --ease:cubic-bezier(.2,.7,.3,1);
  }

  *,*::before,*::after{box-sizing:border-box;}
  html{scroll-behavior:smooth;}
  body{
    margin:0;
    font-family:Inter,system-ui,"PingFang SC","Microsoft YaHei","Noto Sans SC",sans-serif;
    background:var(--bg);
    color:var(--ink);
    font-size:16px;
    line-height:1.75;
    -webkit-font-smoothing:antialiased;
  }
  img{max-width:100%;display:block;border-radius:var(--radius-img);}
  a{color:inherit;text-decoration:none;}
  button,input{font-family:inherit;font-size:inherit;}
  h1,h2,h3,h4{margin:0;font-weight:700;line-height:1.28;letter-spacing:.01em;}
  p{margin:0;}
  ul{margin:0;padding:0;list-style:none;}

  .container{
    width:100%;
    max-width:1280px;
    margin:0 auto;
    padding-left:32px;
    padding-right:32px;
  }

  a:focus-visible,
  button:focus-visible,
  input:focus-visible,
  summary:focus-visible{
    outline:2px solid var(--brand);
    outline-offset:2px;
    border-radius:6px;
  }

  /* ============ 顶栏导航 ============ */
  .site-header{
    position:sticky;
    top:0;
    z-index:60;
    background:#fff;
    border-bottom:1px solid var(--line);
    transition:box-shadow .25s var(--ease), height .25s var(--ease);
  }
  .site-header.is-stuck{
    box-shadow:0 1px 0 var(--line), 0 10px 24px -20px rgba(16,27,46,.35);
  }
  .nav-inner{
    display:flex;
    align-items:center;
    justify-content:space-between;
    gap:24px;
    height:64px;
    transition:height .25s var(--ease);
  }
  .site-header.is-stuck .nav-inner{height:56px;}
  .nav-half{display:flex;align-items:center;min-width:0;}
  .nav-left{flex:6 1 0;gap:26px;}
  .nav-right{flex:6 1 0;gap:14px;justify-content:flex-end;}

  .brand{
    display:inline-flex;
    align-items:center;
    gap:10px;
    font-weight:700;
    font-size:17px;
    color:var(--ink);
    white-space:nowrap;
  }
  .brand-mark{
    width:34px;height:34px;
    display:inline-flex;align-items:center;justify-content:center;
    border-radius:10px;
    background:var(--brand);
    color:#fff;
    font-size:15px;
    box-shadow:0 6px 14px -8px rgba(36,86,199,.9);
  }

  .nav-links{display:flex;align-items:center;gap:4px;}
  .nav-link{
    position:relative;
    display:inline-flex;
    align-items:center;
    height:64px;
    padding:0 12px;
    font-size:15px;
    color:var(--ink-2);
    transition:color .18s var(--ease);
  }
  .site-header.is-stuck .nav-link{height:56px;}
  .nav-link::after{
    content:"";
    position:absolute;
    left:12px;right:12px;bottom:14px;
    height:2px;
    border-radius:2px;
    background:var(--brand);
    transform:scaleX(0);
    transform-origin:left center;
    transition:transform .22s var(--ease);
  }
  .nav-link:hover{color:var(--brand);}
  .nav-link:hover::after{transform:scaleX(1);}
  .nav-link.is-active{color:var(--brand);font-weight:600;}
  .nav-link.is-active::after{transform:scaleX(1);}

  .nav-search{
    display:flex;
    align-items:center;
    height:40px;
    width:240px;
    padding:0 6px 0 12px;
    border:1px solid var(--line);
    border-radius:999px;
    background:var(--bg);
    transition:border-color .2s var(--ease), background .2s var(--ease), width .25s var(--ease);
  }
  .nav-search:focus-within{
    border-color:var(--brand);
    background:#fff;
    width:280px;
  }
  .nav-search input{
    flex:1;
    min-width:0;
    border:0;
    background:transparent;
    height:100%;
    outline:none;
    color:var(--ink);
    font-size:14px;
  }
  .nav-search input::placeholder{color:var(--ink-3);}
  .nav-search button{
    width:30px;height:30px;
    border:0;border-radius:999px;
    background:var(--brand);
    color:#fff;
    cursor:pointer;
    display:inline-flex;align-items:center;justify-content:center;
    font-size:12px;
    transition:background .2s var(--ease);
  }
  .nav-search button:hover{background:var(--brand-700);}

  .nav-toggle{
    display:none;
    width:44px;height:44px;
    border:1px solid var(--line);
    border-radius:10px;
    background:#fff;
    color:var(--ink);
    cursor:pointer;
    align-items:center;justify-content:center;
    font-size:16px;
  }

  /* 移动抽屉 */
  .mobile-drawer{
    display:none;
    border-top:1px solid var(--line);
    background:#fff;
    padding:12px 0 18px;
  }
  .mobile-drawer.is-open{display:block;}
  .mobile-drawer a{
    display:flex;
    align-items:center;
    justify-content:space-between;
    min-height:48px;
    padding:0 32px;
    font-size:15px;
    color:var(--ink-2);
    border-bottom:1px solid var(--line);
  }
  .mobile-drawer a.is-active{color:var(--brand);font-weight:600;background:var(--brand-50);}
  .mobile-drawer a i{font-size:12px;color:var(--ink-3);}

  /* ============ 通用按钮 ============ */
  .btn{
    display:inline-flex;
    align-items:center;
    justify-content:center;
    gap:8px;
    min-height:44px;
    padding:0 20px;
    border-radius:var(--radius-btn);
    font-size:15px;
    font-weight:600;
    border:1px solid transparent;
    cursor:pointer;
    transition:transform .2s var(--ease), background .2s var(--ease), color .2s var(--ease), border-color .2s var(--ease), box-shadow .2s var(--ease), opacity .2s var(--ease);
    white-space:nowrap;
  }
  .btn-primary{background:var(--brand);color:#fff;box-shadow:0 10px 22px -14px rgba(36,86,199,.9);}
  .btn-primary:hover{background:var(--brand-700);transform:translateY(-2px);box-shadow:0 16px 28px -16px rgba(36,86,199,.95);}
  .btn-primary:active{transform:translateY(1px);}
  .btn-ghost{background:#fff;color:var(--brand);border-color:var(--brand-100);}
  .btn-ghost:hover{background:var(--brand-50);border-color:var(--brand);transform:translateY(-2px);}
  .btn-ghost:active{transform:translateY(1px);}
  .btn-white{background:#fff;color:var(--brand);}
  .btn-white:hover{background:var(--brand-50);transform:translateY(-2px);}
  .btn-line{background:transparent;color:#fff;border-color:rgba(255,255,255,.55);}
  .btn-line:hover{background:rgba(255,255,255,.14);transform:translateY(-2px);}
  .btn[disabled],.btn.is-disabled{opacity:.5;pointer-events:none;}
  .btn-sm{min-height:40px;padding:0 16px;font-size:14px;}

  .btn-text{
    display:inline-flex;
    align-items:center;
    gap:6px;
    font-size:14px;
    font-weight:600;
    color:var(--brand);
  }
  .btn-text i{transition:transform .2s var(--ease);font-size:12px;}
  .btn-text:hover i{transform:translateX(4px);}

  /* ============ 徽章 / 标签 ============ */
  .badge{
    display:inline-flex;
    align-items:center;
    gap:6px;
    height:24px;
    padding:0 10px;
    border-radius:999px;
    font-size:12px;
    font-weight:600;
    line-height:1;
  }
  .badge-brand{background:var(--brand-50);color:var(--brand);}
  .badge-accent{background:#FDF1E3;color:var(--accent-hover);}
  .badge-teal{background:#E6F4F4;color:var(--teal);}
  .badge-gray{background:var(--bg-soft);color:var(--ink-3);}

  /* ============ 面包屑 ============ */
  .breadcrumb{
    display:flex;
    align-items:center;
    flex-wrap:wrap;
    gap:8px;
    padding:18px 0 0;
    font-size:13px;
    color:var(--ink-3);
  }
  .breadcrumb a{color:var(--ink-2);transition:color .18s var(--ease);}
  .breadcrumb a:hover{color:var(--brand);}
  .breadcrumb .sep{color:#C3CDDD;}
  .breadcrumb .current{color:var(--ink);font-weight:600;}

  /* ============ 次级 Hero ============ */
  .sub-hero{
    margin-top:18px;
    border-radius:20px;
    overflow:hidden;
    background:linear-gradient(115deg,#1B3E96 0%, #2456C7 52%, #2E6BE0 100%);
    border:1px solid #1B3E96;
    position:relative;
  }
  .sub-hero::after{
    content:"";
    position:absolute;inset:0;
    background-image:linear-gradient(rgba(255,255,255,.07) 1px, transparent 1px),
                     linear-gradient(90deg, rgba(255,255,255,.07) 1px, transparent 1px);
    background-size:44px 44px;
    opacity:.55;
    pointer-events:none;
  }
  .sub-hero-grid{
    position:relative;
    z-index:1;
    display:grid;
    grid-template-columns:1.55fr 1fr;
    gap:32px;
    align-items:center;
    min-height:262px;
    padding:34px 40px;
  }
  .sub-hero h1{
    color:#fff;
    font-size:clamp(26px,3.2vw,38px);
    font-weight:700;
    line-height:1.25;
    letter-spacing:.01em;
  }
  .sub-hero .eyebrow{
    display:inline-flex;
    align-items:center;
    gap:8px;
    height:26px;
    padding:0 12px;
    border-radius:999px;
    background:rgba(255,255,255,.14);
    border:1px solid rgba(255,255,255,.25);
    color:#EAF0FF;
    font-size:12px;
    font-weight:600;
    margin-bottom:14px;
  }
  .sub-hero .lede{
    margin-top:14px;
    max-width:640px;
    color:#D7E2FB;
    font-size:15px;
    line-height:1.8;
  }
  .sub-hero-media{
    position:relative;
    border-radius:16px;
    overflow:hidden;
    border:1px solid rgba(255,255,255,.22);
    background:rgba(255,255,255,.08);
    aspect-ratio:16/9;
  }
  .sub-hero-media img{width:100%;height:100%;object-fit:cover;border-radius:0;}
  .sub-hero-media .tagline{
    position:absolute;
    left:12px;bottom:12px;
    background:rgba(16,27,46,.72);
    color:#fff;
    font-size:12px;
    font-weight:600;
    padding:6px 12px;
    border-radius:999px;
  }

  /* ============ 板块 ============ */
  .section{padding:72px 0;}
  .section-tight{padding:52px 0;}
  .section-head{
    display:flex;
    align-items:flex-end;
    justify-content:space-between;
    gap:24px;
    padding-bottom:22px;
    border-bottom:1px solid var(--line);
    margin-bottom:34px;
  }
  .section-head h2{font-size:clamp(22px,2.4vw,28px);}
  .section-head .sub{
    margin-top:8px;
    color:var(--ink-2);
    font-size:15px;
    max-width:720px;
  }

  /* 导语要点 */
  .lead-points{
    display:grid;
    grid-template-columns:repeat(3,1fr);
    gap:18px;
    margin-top:26px;
  }
  .lead-point{
    display:flex;
    gap:14px;
    padding:20px 22px;
    background:var(--card);
    border:1px solid var(--line);
    border-radius:var(--radius-card);
    box-shadow:var(--shadow-card);
  }
  .lead-point .num{
    font-size:13px;
    font-weight:700;
    color:var(--accent);
    letter-spacing:.06em;
    padding-top:2px;
  }
  .lead-point h3{font-size:16px;font-weight:600;margin-bottom:6px;}
  .lead-point p{font-size:14px;color:var(--ink-2);line-height:1.7;}

  /* ============ 编辑式首条 ============ */
  .feature-lead{
    position:relative;
    border-radius:20px;
    overflow:hidden;
    border:1px solid var(--line);
    background:#0F1B31;
    box-shadow:var(--shadow-card);
  }
  .feature-lead img{
    width:100%;
    aspect-ratio:16/9;
    object-fit:cover;
    border-radius:0;
    opacity:.82;
  }
  .feature-lead .overlay{
    position:absolute;
    inset:0;
    background:linear-gradient(to top, rgba(12,20,38,.94) 4%, rgba(12,20,38,.66) 44%, rgba(12,20,38,.10) 100%);
    display:flex;
    flex-direction:column;
    justify-content:flex-end;
    padding:38px 40px;
  }
  .feature-lead h3{
    color:#fff;
    font-size:clamp(22px,2.6vw,30px);
    max-width:760px;
  }
  .feature-lead p{
    margin-top:12px;
    max-width:720px;
    color:#D3DDEF;
    font-size:15px;
    line-height:1.8;
  }
  .feature-lead .meta{
    display:flex;
    align-items:center;
    flex-wrap:wrap;
    gap:12px;
    margin-top:18px;
  }
  .feature-lead .meta .badge{background:rgba(255,255,255,.15);color:#fff;}
  .feature-lead .meta .badge-accent{background:var(--accent);color:#fff;}

  /* ============ 两列密集列表 ============ */
  .dense-grid{
    display:grid;
    grid-template-columns:repeat(2,minmax(0,1fr));
    gap:14px 18px;
    margin-top:26px;
  }
  .dense-item{
    display:flex;
    gap:16px;
    padding:20px 22px;
    background:var(--card);
    border:1px solid var(--line);
    border-radius:var(--radius-card);
    box-shadow:var(--shadow-card);
    transition:transform .2s var(--ease), border-color .2s var(--ease), box-shadow .2s var(--ease);
  }
  .dense-item:hover{
    transform:translateY(-4px);
    border-color:var(--brand-100);
    box-shadow:var(--shadow-hover);
  }
  .dense-item .idx{
    flex:0 0 auto;
    width:38px;height:38px;
    border-radius:10px;
    display:inline-flex;align-items:center;justify-content:center;
    background:var(--brand-50);
    color:var(--brand);
    font-weight:700;
    font-size:13px;
    letter-spacing:.04em;
  }
  .dense-item h3{font-size:16.5px;font-weight:600;margin-bottom:8px;}
  .dense-item h3 a{transition:color .18s var(--ease);}
  .dense-item h3 a:hover{color:var(--brand);}
  .dense-item p{font-size:14px;color:var(--ink-2);line-height:1.72;}
  .dense-item .tags{display:flex;flex-wrap:wrap;gap:8px;margin-top:12px;}

  /* ============ 上手三步 ============ */
  .steps-band{
    background:var(--bg-soft);
    border-top:1px solid var(--line);
    border-bottom:1px solid var(--line);
  }
  .steps{
    display:grid;
    grid-template-columns:repeat(3,1fr);
    gap:20px;
    margin-top:32px;
  }
  .step{
    background:var(--card);
    border:1px solid var(--line);
    border-radius:var(--radius-card);
    padding:26px 24px 24px;
    position:relative;
    box-shadow:var(--shadow-card);
    transition:transform .2s var(--ease), box-shadow .2s var(--ease);
  }
  .step:hover{transform:translateY(-4px);box-shadow:var(--shadow-hover);}
  .step .step-num{
    position:absolute;
    top:-13px;left:24px;
    height:26px;
    padding:0 12px;
    display:inline-flex;align-items:center;
    border-radius:999px;
    background:var(--accent);
    color:#fff;
    font-size:12px;
    font-weight:700;
    letter-spacing:.06em;
  }
  .step h3{font-size:17px;margin:10px 0 10px;}
  .step p{font-size:14px;color:var(--ink-2);line-height:1.75;}

  /* ============ 相关分类 ============ */
  .cross-grid{
    display:grid;
    grid-template-columns:repeat(4,minmax(0,1fr));
    gap:18px;
    margin-top:30px;
  }
  .cross-card{
    display:block;
    background:var(--card);
    border:1px solid var(--line);
    border-radius:var(--radius-card);
    overflow:hidden;
    box-shadow:var(--shadow-card);
    transition:transform .2s var(--ease), border-color .2s var(--ease), box-shadow .2s var(--ease);
  }
  .cross-card:hover{transform:translateY(-4px);border-color:var(--brand-100);box-shadow:var(--shadow-hover);}
  .cross-card .thumb{aspect-ratio:16/10;overflow:hidden;background:var(--bg-soft);}
  .cross-card .thumb img{width:100%;height:100%;object-fit:cover;border-radius:0;}
  .cross-card .body{padding:18px 20px 20px;}
  .cross-card h3{font-size:16px;margin-bottom:8px;}
  .cross-card p{font-size:13.5px;color:var(--ink-2);line-height:1.7;min-height:44px;}
  .cross-card .more{margin-top:12px;font-size:13px;font-weight:600;color:var(--brand);display:inline-flex;align-items:center;gap:6px;}
  .cross-card:hover .more i{transform:translateX(4px);}
  .cross-card .more i{transition:transform .2s var(--ease);font-size:11px;}

  /* ============ CTA 条带 ============ */
  .cta-band{
    background:var(--brand-50);
    border:1px solid var(--brand-100);
    border-radius:20px;
    padding:26px 30px;
    display:flex;
    align-items:center;
    justify-content:space-between;
    gap:24px;
    flex-wrap:wrap;
  }
  .cta-band .cta-copy h2{font-size:20px;}
  .cta-band .cta-copy p{margin-top:8px;font-size:14px;color:var(--ink-2);max-width:620px;}
  .cta-actions{display:flex;align-items:center;gap:12px;flex-wrap:wrap;}
  .icon-btn{
    display:inline-flex;
    align-items:center;
    gap:8px;
    min-height:44px;
    padding:0 18px;
    border-radius:var(--radius-btn);
    border:1px solid var(--brand-100);
    background:#fff;
    color:var(--brand);
    font-size:14px;
    font-weight:600;
    cursor:pointer;
    transition:background .2s var(--ease), transform .2s var(--ease), border-color .2s var(--ease);
  }
  .icon-btn:hover{background:#fff;border-color:var(--brand);transform:translateY(-2px);}
  .icon-btn:active{transform:translateY(1px);}
  .icon-btn.is-done{color:var(--success);border-color:#C8E9D8;background:#F2FBF6;}

  /* ============ FAQ ============ */
  .faq-list{
    margin-top:24px;
    border-top:1px solid var(--line);
  }
  .faq-item{
    border-bottom:1px solid var(--line);
  }
  .faq-item summary{
    list-style:none;
    cursor:pointer;
    min-height:56px;
    display:flex;
    align-items:center;
    justify-content:space-between;
    gap:16px;
    padding:14px 4px;
    font-size:16px;
    font-weight:600;
    color:var(--ink);
    transition:color .18s var(--ease);
  }
  .faq-item summary::-webkit-details-marker{display:none;}
  .faq-item summary:hover{color:var(--brand);}
  .faq-item summary .chev{
    flex:0 0 auto;
    width:26px;height:26px;
    border-radius:50%;
    border:1px solid var(--line);
    display:inline-flex;align-items:center;justify-content:center;
    font-size:11px;
    color:var(--ink-2);
    transition:transform .25s var(--ease), background .2s var(--ease), color .2s var(--ease), border-color .2s var(--ease);
  }
  .faq-item[open] summary .chev{
    transform:rotate(180deg);
    background:var(--brand);
    border-color:var(--brand);
    color:#fff;
  }
  .faq-item .faq-body{
    padding:0 4px 20px;
    max-width:820px;
    color:var(--ink-2);
    font-size:15px;
    line-height:1.85;
    animation:fadeIn .25s var(--ease);
  }
  @keyframes fadeIn{from{opacity:0;transform:translateY(-4px);}to{opacity:1;transform:translateY(0);}}

  /* ============ 页脚 ============ */
  .site-footer{
    background:#0E1727;
    color:#B9C5DA;
    margin-top:24px;
    padding:64px 0 0;
  }
  .footer-grid{
    display:grid;
    grid-template-columns:1.5fr 1fr 1fr 1.2fr;
    gap:36px;
    padding-bottom:42px;
  }
  .footer-brand .brand{color:#fff;margin-bottom:16px;}
  .footer-brand .brand-mark{background:var(--brand);}
  .footer-brand p{font-size:14px;line-height:1.8;color:#93A2BC;max-width:320px;}
  .footer-title{
    font-size:15px;
    color:#fff;
    font-weight:600;
    margin-bottom:16px;
    display:flex;
    align-items:center;
    justify-content:space-between;
  }
  .footer-title i{display:none;font-size:12px;color:#7C8CA8;}
  .footer-list li{margin-bottom:11px;}
  .footer-list a{
    font-size:14px;
    color:#A6B3C9;
    transition:color .18s var(--ease);
  }
  .footer-list a:hover{color:#fff;}
  .footer-contact li{
    display:flex;
    align-items:flex-start;
    gap:10px;
    font-size:14px;
    color:#A6B3C9;
  }
  .footer-contact i{margin-top:5px;font-size:13px;color:#7C8CA8;}
  .footer-bottom{
    border-top:1px solid rgba(255,255,255,.10);
    padding:20px 0 26px;
    display:flex;
    align-items:center;
    justify-content:space-between;
    gap:16px;
    flex-wrap:wrap;
    font-size:13px;
    color:#8595AD;
  }

  /* ============ 响应式 ============ */
  @media (max-width:1024px){
    .container{padding-left:28px;padding-right:28px;}
    .nav-links{display:none;}
    .nav-search{width:200px;}
    .nav-search:focus-within{width:230px;}
    .nav-left{flex:1 1 auto;}
    .nav-right{flex:1 1 auto;}
    .sub-hero-grid{grid-template-columns:1fr;gap:24px;padding:30px 32px;min-height:auto;}
    .sub-hero-media{max-width:520px;}
    .lead-points{grid-template-columns:1fr 1fr;}
    .cross-grid{grid-template-columns:repeat(2,minmax(0,1fr));}
    .steps{grid-template-columns:1fr 1fr;}
    .footer-grid{grid-template-columns:1fr 1fr;gap:28px;}
  }

  @media (max-width:768px){
    body{font-size:15px;}
    .container{padding-left:20px;padding-right:20px;}
    .nav-inner{height:56px;gap:12px;}
    .site-header.is-stuck .nav-inner{height:52px;}
    .nav-link{height:56px;}
    .brand{font-size:15.5px;}
    .brand-mark{width:30px;height:30px;font-size:13px;border-radius:9px;}
    .nav-search{display:none;}
    .nav-cta{display:none;}
    .nav-toggle{display:inline-flex;}
    .section{padding:52px 0;}
    .section-tight{padding:40px 0;}
    .section-head{flex-direction:column;align-items:flex-start;gap:12px;padding-bottom:18px;margin-bottom:24px;}
    .sub-hero-grid{padding:26px 22px;}
    .sub-hero .lede{font-size:14.5px;}
    .lead-points{grid-template-columns:1fr;}
    .feature-lead .overlay{padding:24px 22px;}
    .dense-grid{grid-template-columns:1fr;}
    .steps{grid-template-columns:1fr;}
    .cross-grid{grid-template-columns:1fr;}
    .cta-band{flex-direction:column;align-items:flex-start;padding:22px;}
    .cta-actions{width:100%;}
    .cta-actions .icon-btn{flex:1 1 auto;justify-content:center;}
    .footer-grid{grid-template-columns:1fr;gap:6px;padding-bottom:26px;}
    .footer-group{border-bottom:1px solid rgba(255,255,255,.10);padding:14px 0;}
    .footer-title{cursor:pointer;margin-bottom:0;}
    .footer-title i{display:block;transition:transform .25s var(--ease);}
    .footer-group.is-open .footer-title i{transform:rotate(180deg);}
    .footer-list{display:none;margin-top:14px;}
    .footer-group.is-open .footer-list{display:block;}
    .footer-brand{border-bottom:1px solid rgba(255,255,255,.10);padding-bottom:20px;}
    .footer-bottom{flex-direction:column;align-items:flex-start;gap:8px;}
    .site-footer{padding-top:36px;}
  }

  @media (max-width:520px){
    .dense-item{padding:18px 16px;gap:12px;}
    .dense-item .idx{width:32px;height:32px;font-size:12px;}
    .feature-lead h3{font-size:20px;}
    .feature-lead p{font-size:14px;}
    .cta-actions{flex-direction:column;align-items:stretch;}
    .cta-actions .icon-btn{width:100%;}
  }