/* roulang page: index */
:root{
  --brand:#1D4E89;
  --brand-dark:#163C6B;
  --brand-light:#E8F0FA;
  --accent:#12A594;
  --accent-dark:#0E8A7C;
  --warm:#F0873C;
  --text:#16202E;
  --muted:#5A6B7F;
  --faint:#94A3B5;
  --bg:#FFFFFF;
  --bg-alt:#F5F8FC;
  --border:#E3EAF3;
  --r-card:16px;
  --r-tall:20px;
  --r-img:12px;
  --r-btn:999px;
  --sh1:0 4px 16px rgba(23,54,92,.08);
  --sh2:0 10px 28px rgba(23,54,92,.14);
  --sh3:0 16px 40px rgba(23,54,92,.18);
  --sec-y:80px;
  --gap:24px;
  --font:"PingFang SC","Microsoft YaHei","Noto Sans SC",system-ui,-apple-system,"Helvetica Neue",Arial,sans-serif;
}
*,*::before,*::after{box-sizing:border-box}
html{-webkit-text-size-adjust:100%;scroll-behavior:smooth}
body{
  margin:0;
  font-family:var(--font);
  font-size:16px;
  line-height:1.85;
  color:var(--text);
  background:var(--bg);
  letter-spacing:0;
  -webkit-font-smoothing:antialiased;
}
h1,h2,h3,h4,p,ul,ol,figure{margin:0;padding:0}
ul,ol{list-style:none}
img{max-width:100%;display:block}
a{color:var(--brand);text-decoration:none;transition:color .18s ease}
a:hover{color:var(--brand-dark)}
button{font-family:inherit;cursor:pointer}
:focus-visible{outline:3px solid var(--brand);outline-offset:2px;box-shadow:0 0 0 2px #fff}
.container{width:100%;max-width:1200px;margin:0 auto;padding:0 24px}
.section{padding:var(--sec-y) 0}
.section--alt{background:var(--bg-alt)}
.section-head{display:flex;align-items:flex-end;justify-content:space-between;gap:24px;margin-bottom:32px;flex-wrap:wrap}
.section-head h2{font-size:clamp(24px,3vw,30px);font-weight:700;line-height:1.3;color:var(--text);margin:0}
.section-sub{font-size:15px;line-height:1.85;color:var(--muted);max-width:640px;margin-top:10px}
.text-link{display:inline-flex;align-items:center;gap:6px;font-size:14px;font-weight:600;color:var(--brand);position:relative;padding-bottom:2px}
.text-link::after{content:"";position:absolute;left:0;right:0;bottom:0;height:1px;background:var(--brand);transform:scaleX(0);transform-origin:center;transition:transform .18s ease}
.text-link:hover::after{transform:scaleX(1)}
.text-link .arrow{transition:transform .18s ease}
.text-link:hover .arrow{transform:translateX(4px)}

/* ---------- 顶部信息条 ---------- */
.topbar{background:var(--brand-dark);color:#fff;font-size:12px;line-height:36px;height:36px;overflow:hidden}
.topbar-inner{display:flex;align-items:center;justify-content:space-between;gap:20px;height:36px}
.topbar-domain{color:#fff;font-weight:600;letter-spacing:.02em;border-bottom:1px solid rgba(255,255,255,.35)}
.topbar-domain:hover{color:#fff;border-bottom-color:#fff}
.topbar-note{color:#D7E2F0;margin:0;white-space:nowrap;overflow:hidden;text-overflow:ellipsis}
.topbar-links{display:flex;align-items:center;gap:20px}
.topbar-links a{color:#D7E2F0;border-bottom:1px solid transparent}
.topbar-links a:hover{color:#fff;border-bottom-color:#12A594}

/* ---------- 主导航 ---------- */
.site-header{position:sticky;top:0;z-index:60}
.mainnav{background:#fff;border-bottom:1px solid var(--border);transition:box-shadow .25s ease}
.site-header.is-stuck .mainnav{box-shadow:0 6px 20px rgba(23,54,92,.08)}
.mainnav-inner{display:flex;align-items:center;justify-content:space-between;gap:24px;height:68px}
.brand{display:inline-flex;align-items:center;gap:10px;color:var(--text)}
.brand:hover{color:var(--brand)}
.brand-mark{width:32px;height:32px;border-radius:9px;background:var(--brand);color:#fff;display:inline-flex;align-items:center;justify-content:center;font-size:16px;font-weight:700;flex:0 0 auto}
.brand-text{display:flex;flex-direction:column;font-size:16px;font-weight:700;line-height:1.25;color:inherit}
.brand-text small{font-size:12px;font-weight:400;color:var(--faint);line-height:1.4}
.nav-list{display:flex;align-items:center;gap:28px;margin:0}
.nav-list a{position:relative;display:inline-block;padding:8px 0;font-size:16px;color:var(--text);font-weight:500}
.nav-list a::after{content:"";position:absolute;left:50%;right:50%;bottom:0;height:2px;background:var(--brand);transition:left .2s ease,right .2s ease}
.nav-list a:hover{color:var(--brand)}
.nav-list a:hover::after{left:0;right:0}
.nav-list a.is-active{color:var(--brand);font-weight:600}
.nav-list a.is-active::after{left:0;right:0}
.nav-actions{display:flex;align-items:center;gap:12px}
.icon-btn{width:40px;height:40px;border-radius:50%;border:1px solid var(--border);background:#fff;color:var(--brand);display:inline-flex;align-items:center;justify-content:center;transition:background .2s ease,border-color .2s ease,transform .2s ease}
.icon-btn:hover{background:var(--brand-light);border-color:var(--brand);transform:translateY(-1px)}
.icon-btn svg{width:18px;height:18px}
.burger{display:none;width:44px;height:44px;border-radius:10px;border:1px solid var(--border);background:#fff;flex-direction:column;align-items:center;justify-content:center;gap:5px}
.burger span{display:block;width:18px;height:2px;background:var(--text);border-radius:2px;transition:transform .2s ease,opacity .2s ease}
.burger:hover{border-color:var(--brand)}

/* 搜索面板 */
.search-panel{display:none;border-top:1px solid var(--border);background:var(--bg-alt);padding:14px 0}
.search-panel.is-open{display:block}
.search-form{display:flex;gap:12px;align-items:center}
.search-form input[type="search"]{flex:1;height:44px;border-radius:10px;border:1px solid var(--border);background:#fff;padding:0 14px;font-size:15px;color:var(--text)}
.search-form input[type="search"]::placeholder{color:var(--faint)}
.search-form input[type="search"]:focus{border:2px solid var(--brand);outline:none;box-shadow:0 0 0 4px rgba(29,78,137,.12)}

/* 移动抽屉 */
.drawer{display:none;position:fixed;left:0;right:0;top:0;bottom:0;z-index:80;background:#fff;padding:18px 16px 24px;overflow-y:auto}
.drawer.is-open{display:block}
.drawer-head{display:flex;align-items:center;justify-content:space-between;margin-bottom:8px}
.drawer-close{width:44px;height:44px;border-radius:10px;border:1px solid var(--border);background:#fff;font-size:20px;color:var(--text);line-height:1}
.drawer-list li a{display:flex;align-items:center;min-height:48px;padding:0 10px;font-size:16px;color:var(--text);border-radius:10px}
.drawer-list li a.is-active{color:var(--brand);font-weight:600;box-shadow:inset 3px 0 0 var(--brand);background:var(--brand-light)}
.drawer-list li a:hover{background:var(--brand-light);color:var(--brand)}
.drawer-cta{margin-top:16px;display:block;text-align:center}

/* ---------- 按钮 ---------- */
.btn{display:inline-flex;align-items:center;justify-content:center;gap:8px;min-height:46px;padding:0 24px;border-radius:var(--r-btn);font-size:15px;font-weight:600;border:1px solid transparent;transition:background .2s ease,color .2s ease,transform .2s ease,box-shadow .2s ease,border-color .2s ease;text-align:center;line-height:1.2}
.btn-primary{background:var(--brand);color:#fff}
.btn-primary:hover{background:var(--brand-dark);color:#fff;transform:translateY(-2px);box-shadow:var(--sh2)}
.btn-primary:active{transform:translateY(0);box-shadow:var(--sh1)}
.btn-outline{background:#fff;color:var(--brand);border:1px solid var(--border);border-radius:10px}
.btn-outline:hover{background:var(--brand-light);border-color:var(--brand);color:var(--brand-dark)}
.btn-accent{background:var(--accent);color:#fff;min-height:52px;font-size:16px;padding:0 32px}
.btn-accent:hover{background:var(--accent-dark);color:#fff;transform:translateY(-2px);box-shadow:var(--sh2)}
.btn-sm{min-height:40px;font-size:14px;padding:0 18px}

/* ---------- 徽章 ---------- */
.badge{display:inline-flex;align-items:center;gap:6px;font-size:12px;line-height:1;padding:7px 12px;border-radius:999px;font-weight:600}
.badge-soft{background:var(--brand-light);color:var(--brand)}
.badge-warm{background:rgba(240,135,60,.14);color:#B85E1E}
.badge-light{background:rgba(255,255,255,.92);color:var(--text)}

/* ---------- Hero ---------- */
.hero{padding:88px 0 72px;position:relative;overflow:hidden}
.hero-grid{display:grid;grid-template-columns:1fr 1fr;gap:64px;align-items:center}
.hero-badge{margin-bottom:22px}
.hero h1{font-size:clamp(30px,4.2vw,46px);font-weight:700;line-height:1.25;color:var(--text);margin:0 0 20px}
.hero-sub{font-size:16px;line-height:1.9;color:var(--muted);max-width:520px;margin-bottom:32px}
.hero-actions{display:flex;flex-wrap:wrap;gap:14px;margin-bottom:32px}
.hero-trust{display:flex;flex-wrap:wrap;align-items:center;gap:14px;font-size:14px;color:var(--muted)}
.hero-trust span{display:inline-flex;align-items:center;gap:14px}
.hero-trust span::before{content:"";width:1px;height:14px;background:var(--border)}
.hero-trust span:first-child::before{display:none}

.hero-visual{position:relative;display:flex;align-items:center;justify-content:center;min-height:480px}
.hero-visual::before{content:"";position:absolute;inset:0;background:url('/assets/images/backpic/back-1.webp') center/cover no-repeat;opacity:.07;border-radius:24px}
.tall-main{position:relative;z-index:3;width:100%;max-width:300px;aspect-ratio:9/16;border-radius:var(--r-tall);overflow:hidden;box-shadow:var(--sh2);background:var(--bg-alt)}
.tall-main img{width:100%;height:100%;object-fit:cover}
.tall-back{position:absolute;left:50%;top:50%;width:100%;max-width:300px;aspect-ratio:9/16;border-radius:var(--r-tall);overflow:hidden;box-shadow:var(--sh1);background:var(--bg-alt)}
.tall-back img{width:100%;height:100%;object-fit:cover}
.tall-back-1{transform:translate(-50%,-50%) rotate(-3deg) scale(.92);z-index:2;opacity:.9}
.tall-back-2{transform:translate(-50%,-50%) rotate(3deg) scale(.84);z-index:1;opacity:.72}
.hero-float{position:absolute;z-index:4;left:50%;top:6%;transform:translateX(-32%);background:var(--warm);color:#fff;font-size:12px;font-weight:600;padding:8px 14px;border-radius:999px;box-shadow:var(--sh1)}

/* ---------- 竖屏片段卡 ---------- */
.tall-grid{display:grid;grid-template-columns:repeat(4,1fr);gap:24px}
.tall-card{position:relative;display:block;border-radius:var(--r-tall);overflow:hidden;aspect-ratio:9/16;background:var(--bg-alt);box-shadow:var(--sh1);transition:transform .2s ease,box-shadow .2s ease;color:#fff}
.tall-card img{width:100%;height:100%;object-fit:cover;transition:transform .3s ease}
.tall-card::after{content:"";position:absolute;inset:0;background:linear-gradient(to bottom,rgba(15,32,51,0) 30%,rgba(15,32,51,.82) 100%);transition:opacity .2s ease}
.tall-card:hover{transform:translateY(-4px);box-shadow:var(--sh2);color:#fff}
.tall-card:hover img{transform:scale(1.04)}
.tall-card:hover::after{opacity:.92}
.tall-tag{position:absolute;left:12px;top:12px;z-index:3}
.tall-play{position:absolute;left:50%;top:46%;transform:translate(-50%,-50%);width:56px;height:56px;border-radius:50%;background:rgba(255,255,255,.92);display:flex;align-items:center;justify-content:center;z-index:3;transition:transform .2s ease;box-shadow:var(--sh1)}
.tall-play::before{content:"";display:block;width:0;height:0;border-left:14px solid var(--brand);border-top:9px solid transparent;border-bottom:9px solid transparent;margin-left:4px}
.tall-card:hover .tall-play{transform:translate(-50%,-50%) scale(1.08)}
.tall-body{position:absolute;left:0;right:0;bottom:0;padding:16px;z-index:3}
.tall-body h3{font-size:16px;font-weight:600;line-height:1.45;color:#fff;display:-webkit-box;-webkit-line-clamp:2;-webkit-box-orient:vertical;overflow:hidden}
.tall-meta{font-size:12px;color:rgba(255,255,255,.8);margin-top:6px}

/* ---------- 种草清单 ---------- */
.pick-list{border-top:1px solid var(--border)}
.pick-row{display:grid;grid-template-columns:40px 88px 1fr auto;gap:20px;align-items:center;padding:18px 12px;border-bottom:1px solid var(--border);color:var(--text);transition:background .2s ease}
.pick-row:hover{background:var(--bg-alt);color:var(--text)}
.pick-num{width:32px;height:32px;border-radius:50%;background:var(--brand-light);color:var(--brand);font-weight:700;font-size:14px;display:flex;align-items:center;justify-content:center}
.pick-thumb{width:88px;height:88px;border-radius:var(--r-img);overflow:hidden;background:var(--bg-alt)}
.pick-thumb img{width:100%;height:100%;object-fit:cover}
.pick-main h3{font-size:17px;font-weight:600;line-height:1.5;color:var(--text);transition:color .2s ease}
.pick-row:hover .pick-main h3{color:var(--brand)}
.pick-main p{font-size:14px;color:var(--muted);margin-top:4px;white-space:nowrap;overflow:hidden;text-overflow:ellipsis;max-width:520px}
.pick-tail{display:flex;align-items:center;gap:14px}
.pick-arrow{color:var(--brand);font-size:18px;transition:transform .2s ease}
.pick-row:hover .pick-arrow{transform:translateX(4px)}

/* ---------- 口碑条 ---------- */
.review-scroll{display:flex;gap:20px;overflow-x:auto;padding:4px 4px 20px;scroll-snap-type:x mandatory;-webkit-overflow-scrolling:touch}
.review-scroll::-webkit-scrollbar{height:6px}
.review-scroll::-webkit-scrollbar-thumb{background:var(--border);border-radius:999px}
.review-card{flex:0 0 300px;scroll-snap-align:start;background:#fff;border-radius:var(--r-card);padding:20px;box-shadow:var(--sh1);transition:transform .2s ease,box-shadow .2s ease}
.review-card:hover{transform:translateY(-4px);box-shadow:var(--sh2)}
.review-stars{color:var(--warm);font-size:14px;letter-spacing:2px;margin-bottom:10px}
.review-text{font-size:15px;line-height:1.8;color:var(--text);margin-bottom:16px}
.review-user{display:flex;align-items:center;gap:10px}
.review-avatar{width:40px;height:40px;border-radius:50%;background:var(--brand-light);color:var(--brand);font-weight:700;display:flex;align-items:center;justify-content:center;font-size:15px}
.review-name{font-size:14px;font-weight:600;color:var(--text);line-height:1.4}
.review-time{font-size:12px;color:var(--faint);line-height:1.4}

/* ---------- CTA 带 ---------- */
.cta-band{background:var(--brand-light);border-radius:var(--r-tall);padding:48px;display:grid;grid-template-columns:1fr auto;gap:32px;align-items:center}
.cta-band h2{font-size:clamp(22px,2.6vw,26px);font-weight:700;line-height:1.35;color:var(--text);margin-bottom:10px}
.cta-band p{font-size:15px;color:var(--muted);margin:0;max-width:560px}
.cta-band-actions{display:flex;flex-direction:column;gap:12px;align-items:flex-start}

/* ---------- 资讯列表 ---------- */
.news-list{display:flex;flex-direction:column;gap:20px}
.news-item{display:grid;grid-template-columns:4fr 8fr;gap:24px;background:#fff;border-radius:var(--r-card);box-shadow:var(--sh1);padding:20px;color:var(--text);transition:transform .2s ease,box-shadow .2s ease}
.news-item:hover{transform:translateY(-4px);box-shadow:var(--sh2);color:var(--text)}
.news-thumb{border-radius:var(--r-img);overflow:hidden;aspect-ratio:4/3;background:var(--bg-alt)}
.news-thumb img{width:100%;height:100%;object-fit:cover}
.news-body{display:flex;flex-direction:column;gap:10px;min-width:0}
.news-body h3{font-size:18px;font-weight:600;line-height:1.5;color:var(--text);display:-webkit-box;-webkit-line-clamp:2;-webkit-box-orient:vertical;overflow:hidden}
.news-item:hover .news-body h3{color:var(--brand)}
.news-body p{font-size:14px;color:var(--muted);line-height:1.8;display:-webkit-box;-webkit-line-clamp:2;-webkit-box-orient:vertical;overflow:hidden;margin:0}
.news-meta{display:flex;align-items:center;justify-content:space-between;gap:16px;margin-top:auto;padding-top:6px;font-size:13px;color:var(--faint)}
.news-more{color:var(--brand);font-weight:600;display:inline-flex;align-items:center;gap:6px}
.news-item:hover .news-more .arrow{transform:translateX(4px)}
.news-more .arrow{transition:transform .2s ease}
.empty-state{min-height:120px;border:1px dashed var(--border);border-radius:var(--r-card);background:var(--bg-alt);display:flex;flex-direction:column;align-items:center;justify-content:center;gap:8px;padding:24px;text-align:center}
.empty-state .empty-icon{width:36px;height:36px;border-radius:10px;background:#fff;border:1px solid var(--border);display:flex;align-items:center;justify-content:center;color:var(--faint);font-size:16px}
.empty-state p{font-size:15px;color:var(--muted);margin:0}
.empty-state small{font-size:13px;color:var(--faint)}

/* ---------- FAQ ---------- */
.faq-list{display:flex;flex-direction:column;gap:12px;max-width:900px;margin:0 auto}
.faq-item{background:#fff;border:1px solid var(--border);border-radius:14px;padding:18px 22px;transition:box-shadow .2s ease,border-color .2s ease;position:relative}
.faq-item:hover{box-shadow:var(--sh1);border-color:#D5E1F0}
.faq-item.is-open{box-shadow:var(--sh1);border-color:#CBDCF0}
.faq-item.is-open::before{content:"";position:absolute;left:0;top:16px;bottom:16px;width:3px;border-radius:3px;background:var(--brand)}
.faq-q{width:100%;display:flex;align-items:center;justify-content:space-between;gap:16px;background:none;border:0;padding:0;font-size:16px;font-weight:600;color:var(--text);text-align:left;line-height:1.6}
.faq-q:hover{color:var(--brand)}
.faq-icon{flex:0 0 auto;width:22px;height:22px;position:relative;transition:transform .2s ease,color .2s ease;color:var(--muted)}
.faq-icon::before,.faq-icon::after{content:"";position:absolute;background:currentColor;border-radius:2px}
.faq-icon::before{left:0;right:0;top:10px;height:2px}
.faq-icon::after{top:0;bottom:0;left:10px;width:2px}
.faq-item.is-open .faq-icon{transform:rotate(45deg);color:var(--brand)}
.faq-a{display:none;font-size:15px;line-height:1.85;color:var(--muted);margin-top:12px;max-width:760px}
.faq-item.is-open .faq-a{display:block}

/* ---------- 页脚 ---------- */
.site-footer{background:var(--brand-dark);color:#D7E2F0;padding:64px 0 0;margin-top:0}
.footer-grid{display:grid;grid-template-columns:1.4fr 1fr 1fr 1.1fr;gap:40px;padding-bottom:40px}
.footer-brand{display:inline-flex;align-items:center;gap:10px;color:#fff;margin-bottom:16px}
.footer-brand .brand-mark{background:rgba(255,255,255,.14)}
.footer-brand:hover{color:#fff}
.footer-brand .brand-text small{color:rgba(215,226,240,.7)}
.footer-desc{font-size:14px;line-height:1.9;color:rgba(215,226,240,.85);max-width:340px;margin-bottom:16px}
.footer-tags{display:flex;flex-wrap:wrap;gap:8px}
.footer-tags span{font-size:12px;padding:6px 10px;border-radius:999px;background:rgba(255,255,255,.08);color:#D7E2F0}
.footer-col h4{font-size:15px;font-weight:600;color:#fff;margin:0 0 16px}
.footer-col ul{display:flex;flex-direction:column;gap:10px}
.footer-col a{color:rgba(215,226,240,.88);font-size:14px;display:inline-block;border-bottom:1px solid transparent;transition:color .18s ease,border-color .18s ease}
.footer-col a:hover{color:var(--accent);border-bottom-color:var(--accent)}
.footer-divider{height:1px;background:rgba(255,255,255,.12)}
.footer-keywords{padding:16px 0;font-size:12px;color:rgba(215,226,240,.7);line-height:1.9}
.footer-bottom{display:flex;align-items:center;justify-content:space-between;gap:16px;padding:18px 0 24px;font-size:12px;color:rgba(215,226,240,.7);flex-wrap:wrap}
.footer-bottom a{color:rgba(215,226,240,.7)}
.footer-bottom a:hover{color:var(--accent)}
.to-top{display:inline-flex;align-items:center;gap:6px}
.to-top:hover{color:var(--accent)}

/* ---------- 动效 ---------- */
.fade-up{opacity:0;transform:translateY(16px);animation:fadeUp .6s ease forwards}
.fade-up.d1{animation-delay:.08s}
.fade-up.d2{animation-delay:.16s}
.fade-up.d3{animation-delay:.24s}
@keyframes fadeUp{to{opacity:1;transform:translateY(0)}}

/* ---------- 响应式 ---------- */
@media (max-width:1199px){
  .tall-grid{grid-template-columns:repeat(3,1fr)}
  .hero-grid{gap:40px}
  .footer-grid{grid-template-columns:1fr 1fr}
}
@media (max-width:1023px){
  :root{--sec-y:64px}
  .hero{padding:64px 0 56px}
  .hero-grid{grid-template-columns:1fr;gap:48px}
  .hero-visual{min-height:420px;order:2}
  .hero-trust{font-size:13px}
  .nav-list{gap:20px}
  .nav-list a{font-size:15px}
  .tall-grid{display:flex;gap:20px;overflow-x:auto;padding-bottom:16px;scroll-snap-type:x mandatory}
  .tall-card{flex:0 0 240px;scroll-snap-align:start}
  .cta-band{grid-template-columns:1fr;padding:40px 32px}
  .cta-band-actions{flex-direction:row;flex-wrap:wrap}
  .pick-row{grid-template-columns:36px 72px 1fr auto;gap:16px}
  .pick-thumb{width:72px;height:72px}
}
@media (max-width:900px){
  .nav-list{display:none}
  .burger{display:flex}
  .nav-cta{display:none}
  .brand-text{font-size:15px}
}
@media (max-width:767px){
  :root{--sec-y:48px}
  .container{padding:0 16px}
  .topbar-note{display:none}
  .topbar-links{gap:14px}
  .mainnav-inner{height:60px;gap:12px}
  .brand-mark{width:30px;height:30px;font-size:15px}
  .brand-text{font-size:14px}
  .brand-text small{font-size:11px}
  .hero{padding:44px 0 40px}
  .hero-sub{font-size:15px;margin-bottom:26px}
  .hero-actions{gap:12px}
  .hero-actions .btn{width:100%}
  .hero-visual{min-height:360px}
  .tall-main,.tall-back{max-width:220px}
  .tall-back-2{display:none}
  .hero-float{font-size:11px;padding:6px 10px;transform:translateX(-24%)}
  .section-head{margin-bottom:24px}
  .tall-card{flex:0 0 220px}
  .pick-row{grid-template-columns:32px 64px 1fr;gap:12px;padding:16px 4px;align-items:flex-start}
  .pick-thumb{width:64px;height:64px}
  .pick-tail{grid-column:1 / -1;justify-content:space-between;padding-left:44px}
  .pick-main p{white-space:normal;display:-webkit-box;-webkit-line-clamp:2;-webkit-box-orient:vertical;overflow:hidden}
  .review-card{flex:0 0 260px}
  .cta-band{padding:32px 22px;border-radius:var(--r-card)}
  .cta-band-actions .btn{width:100%}
  .news-item{grid-template-columns:1fr;padding:16px;gap:16px}
  .news-thumb{aspect-ratio:16/9}
  .faq-q{font-size:15px}
  .faq-item{padding:16px}
  .footer-grid{grid-template-columns:1fr;gap:32px;padding-bottom:32px}
  .footer-bottom{flex-direction:column;align-items:flex-start;gap:10px}
  .search-form{flex-direction:column;align-items:stretch}
  .search-form .btn{width:100%}
}
@media (prefers-reduced-motion:reduce){
  *,*::before,*::after{animation:none !important;transition:none !important;scroll-behavior:auto !important}
  .fade-up{opacity:1;transform:none}
}

/* roulang page: article */
:root{
  --ink:#16202E;
  --ink-2:#5A6B7F;
  --ink-3:#94A3B5;
  --brand:#1D4E89;
  --brand-dark:#163C6B;
  --brand-soft:#E8F0FA;
  --teal:#12A594;
  --teal-dark:#0E8578;
  --warm:#F0873C;
  --bg:#FFFFFF;
  --bg-alt:#F5F8FC;
  --line:#E3EAF3;
  --danger:#D9534F;
  --r-xs:10px;
  --r-sm:12px;
  --r-md:16px;
  --r-lg:20px;
  --r-pill:999px;
  --sh-1:0 4px 16px rgba(23,54,92,.08);
  --sh-2:0 10px 28px rgba(23,54,92,.14);
  --sh-3:0 16px 40px rgba(23,54,92,.18);
  --container:1200px;
  --font:"PingFang SC","Microsoft YaHei","Noto Sans SC",system-ui,-apple-system,"Segoe UI",Arial,sans-serif;
}
*,*::before,*::after{box-sizing:border-box}
html{-webkit-text-size-adjust:100%;scroll-behavior:smooth}
body{
  margin:0;
  font-family:var(--font);
  font-size:16px;
  line-height:1.85;
  color:var(--ink);
  background:var(--bg);
  -webkit-font-smoothing:antialiased;
}
img{max-width:100%;display:block;border:0}
a{color:var(--brand);text-decoration:none;transition:color .18s ease}
a:hover{color:var(--brand-dark)}
button{font-family:inherit;font-size:inherit;cursor:pointer}
ul,ol{margin:0;padding:0}
h1,h2,h3,h4,p{margin:0}
:focus-visible{outline:3px solid var(--brand);outline-offset:2px}
.container{
  width:100%;
  max-width:var(--container);
  margin:0 auto;
  padding-left:24px;
  padding-right:24px;
}
/* ---------- 顶部信息条 ---------- */
.topbar{background:var(--brand-dark);color:#FFFFFF;font-size:12px}
.topbar-inner{display:flex;align-items:center;justify-content:space-between;gap:16px;height:36px;line-height:1}
.topbar a{color:#FFFFFF}
.topbar a:hover{color:#9FE3DA}
.topbar-site{font-weight:600;letter-spacing:.2px}
.topbar-note{color:rgba(255,255,255,.78);white-space:nowrap;overflow:hidden;text-overflow:ellipsis}
.topbar-links{display:flex;align-items:center;gap:20px;flex-shrink:0}
.topbar-links a{border-bottom:1px solid transparent}
.topbar-links a:hover{border-bottom-color:#9FE3DA}
/* ---------- 主导航 ---------- */
.mainnav{
  position:sticky;
  top:0;
  z-index:60;
  background:#FFFFFF;
  border-bottom:1px solid var(--line);
  transition:box-shadow .2s ease;
}
.mainnav.is-scrolled{box-shadow:var(--sh-1)}
.mainnav-inner{display:flex;align-items:center;gap:24px;height:68px}
.brand{display:flex;align-items:center;gap:10px;color:var(--ink);flex-shrink:0}
.brand:hover{color:var(--brand)}
.brand-mark{
  width:32px;height:32px;border-radius:9px;background:var(--brand);color:#FFFFFF;
  display:grid;place-items:center;font-size:16px;font-weight:700;flex-shrink:0;
}
.brand-text{display:flex;flex-direction:column;font-size:15px;font-weight:700;line-height:1.25}
.brand-text small{font-size:12px;font-weight:400;color:var(--ink-3);margin-top:2px}
.nav-list{display:flex;align-items:center;list-style:none;margin-left:auto;gap:28px}
.nav-list a{
  position:relative;display:inline-block;padding:6px 0;font-size:16px;color:var(--ink);white-space:nowrap;
}
.nav-list a::after{
  content:"";position:absolute;left:50%;bottom:0;width:0;height:2px;background:var(--brand);
  transition:width .18s ease,left .18s ease;
}
.nav-list a:hover{color:var(--brand)}
.nav-list a:hover::after{width:100%;left:0}
.nav-list a.is-active{color:var(--brand);font-weight:600}
.nav-list a.is-active::after{width:100%;left:0}
.nav-mobile-cta{display:none}
.nav-actions{display:flex;align-items:center;gap:12px;flex-shrink:0}
.icon-btn{
  width:40px;height:40px;border-radius:var(--r-pill);border:1px solid var(--line);
  background:#FFFFFF;color:var(--ink-2);display:grid;place-items:center;transition:.2s ease;
}
.icon-btn svg{width:18px;height:18px}
.icon-btn:hover{color:var(--brand);border-color:var(--brand);background:var(--brand-soft)}
.icon-btn:active{transform:scale(.96)}
.burger{
  display:none;width:44px;height:40px;border:1px solid var(--line);border-radius:var(--r-xs);
  background:#FFFFFF;padding:0;flex-direction:column;align-items:center;justify-content:center;gap:4px;
}
.burger span{display:block;width:18px;height:2px;background:var(--ink);border-radius:2px;transition:.2s ease}
.burger[aria-expanded="true"] span:nth-child(1){transform:translateY(6px) rotate(45deg)}
.burger[aria-expanded="true"] span:nth-child(2){opacity:0}
.burger[aria-expanded="true"] span:nth-child(3){transform:translateY(-6px) rotate(-45deg)}
.search-panel{display:none;background:var(--bg-alt);border-top:1px solid var(--line)}
.search-panel.is-open{display:block}
.search-form{display:flex;gap:12px;align-items:center;padding-top:14px;padding-bottom:14px}
.search-form input[type="search"]{
  flex:1;height:44px;border:1px solid var(--line);border-radius:var(--r-xs);
  padding:0 14px;font-size:14px;color:var(--ink);background:#FFFFFF;
}
.search-form input[type="search"]::placeholder{color:var(--ink-3)}
.search-form input[type="search"]:focus{
  outline:none;border-color:var(--brand);box-shadow:0 0 0 3px rgba(29,78,137,.15);
}
/* ---------- 按钮 ---------- */
.btn{
  display:inline-flex;align-items:center;justify-content:center;gap:8px;
  height:44px;padding:0 22px;border-radius:var(--r-pill);
  font-size:14px;font-weight:600;line-height:1;border:1px solid transparent;
  transition:transform .2s ease,background-color .2s ease,color .2s ease,box-shadow .2s ease,border-color .2s ease;
}
.btn:active{transform:translateY(0) scale(.99)}
.btn-primary{background:var(--brand);color:#FFFFFF}
.btn-primary:hover{background:var(--brand-dark);color:#FFFFFF;transform:translateY(-2px);box-shadow:var(--sh-1)}
.btn-ghost{background:#FFFFFF;border-color:var(--line);color:var(--brand)}
.btn-ghost:hover{background:var(--brand-soft);border-color:var(--brand);color:var(--brand-dark);transform:translateY(-2px)}
.btn-accent{background:var(--teal);color:#FFFFFF}
.btn-accent:hover{background:var(--teal-dark);color:#FFFFFF;transform:translateY(-2px);box-shadow:var(--sh-1)}
.btn-sm{height:40px;padding:0 18px}
.btn-lg{height:52px;padding:0 28px;font-size:16px}
/* ---------- 通用板块 ---------- */
.section{padding:64px 0}
.section-alt{background:var(--bg-alt)}
.section-head{display:flex;align-items:flex-end;justify-content:space-between;gap:20px;margin-bottom:28px}
.section-head h2{font-size:clamp(22px,2.4vw,28px);font-weight:700;line-height:1.3}
.section-head p{font-size:15px;color:var(--ink-2);margin-top:8px}
.text-link{font-size:14px;font-weight:600;color:var(--brand);display:inline-flex;align-items:center;gap:6px;white-space:nowrap}
.text-link span{transition:transform .2s ease}
.text-link:hover span{transform:translateX(4px)}
/* ---------- 面包屑 ---------- */
.crumbbar{background:var(--bg-alt);border-bottom:1px solid var(--line)}
.crumbbar-inner{padding-top:14px;padding-bottom:14px}
.breadcrumb{list-style:none;display:flex;align-items:center;flex-wrap:wrap;gap:8px;font-size:13px;color:var(--ink-3)}
.breadcrumb li{display:flex;align-items:center;gap:8px;min-width:0}
.breadcrumb li:not(:last-child)::after{content:"/";color:#C3D0E0}
.breadcrumb a{color:var(--ink-2)}
.breadcrumb a:hover{color:var(--brand)}
.breadcrumb li.current{
  color:var(--ink-3);max-width:52vw;overflow:hidden;text-overflow:ellipsis;white-space:nowrap;display:block;
}
/* ---------- 文章头 ---------- */
.article-main{padding:0 0 8px}
.article-shell{max-width:780px;margin:0 auto;padding:44px 24px 0}
.article-cat-badge{
  display:inline-flex;align-items:center;height:26px;padding:0 12px;border-radius:var(--r-pill);
  background:var(--brand-soft);color:var(--brand);font-size:12px;font-weight:600;margin-bottom:16px;
}
.article-title{
  font-size:clamp(26px,3.6vw,40px);font-weight:700;line-height:1.32;letter-spacing:0;color:var(--ink);
}
.meta-row{
  display:flex;flex-wrap:wrap;align-items:center;gap:10px 14px;margin-top:20px;
  padding-bottom:22px;border-bottom:1px dashed var(--line);font-size:13px;color:var(--ink-3);
}
.meta-row .dot{width:4px;height:4px;border-radius:50%;background:#CBD8E6;display:inline-block}
.meta-row .meta-strong{color:var(--ink-2);font-weight:600}
/* ---------- 正文 ---------- */
.article-body{font-size:16px;line-height:1.9;color:var(--ink);padding:26px 0 8px}
.article-body p{margin:0 0 1.1em}
.article-body h2{
  font-size:28px;font-weight:700;line-height:1.4;margin:40px 0 16px;
  border-left:4px solid var(--brand);padding-left:12px;
}
.article-body h3{font-size:20px;font-weight:600;line-height:1.5;margin:28px 0 12px}
.article-body h4{font-size:17px;font-weight:600;margin:22px 0 10px}
.article-body a{color:var(--brand);border-bottom:1px solid rgba(29,78,137,.32)}
.article-body a:hover{color:var(--brand-dark);border-bottom-color:var(--brand-dark)}
.article-body ul,.article-body ol{margin:0 0 1.1em;padding-left:1.4em}
.article-body li{margin-bottom:8px}
.article-body ul li::marker{color:var(--brand)}
.article-body ol li::marker{color:var(--brand);font-weight:700}
.article-body blockquote{
  margin:24px 0;padding:20px;background:var(--brand-soft);
  border-left:3px solid var(--brand);border-radius:0 var(--r-sm) var(--r-sm) 0;color:var(--ink-2);
}
.article-body blockquote p:last-child{margin-bottom:0}
.article-body img{border-radius:var(--r-sm);margin:24px auto;height:auto}
.article-body figure{margin:24px 0}
.article-body figcaption{font-size:13px;color:var(--ink-3);text-align:center;margin-top:10px}
.article-body table{width:100%;border-collapse:collapse;font-size:14px;margin:24px 0;display:block;overflow-x:auto}
.article-body th{background:var(--bg-alt);text-align:left;font-weight:600}
.article-body th,.article-body td{border:1px solid var(--line);padding:10px 14px;min-width:90px}
.article-body hr{border:0;border-top:1px dashed var(--line);margin:32px 0}
.article-body code{
  background:var(--bg-alt);padding:2px 6px;border-radius:6px;font-size:14px;color:var(--brand-dark);
}
.article-empty{
  min-height:240px;display:flex;flex-direction:column;align-items:center;justify-content:center;gap:14px;
  border:1px dashed var(--line);border-radius:var(--r-md);background:var(--bg-alt);
  padding:32px 24px;text-align:center;margin:28px 0 8px;
}
.article-empty strong{font-size:17px;color:var(--ink)}
.article-empty p{font-size:14px;color:var(--ink-2);max-width:420px}
/* ---------- 文末标签 ---------- */
.article-foot{padding:28px 0 0;border-top:1px dashed var(--line);margin-top:36px}
.article-tags{display:flex;flex-wrap:wrap;align-items:center;gap:10px}
.tag-label{font-size:13px;color:var(--ink-3)}
.tag{
  display:inline-flex;align-items:center;height:28px;padding:0 12px;border-radius:var(--r-pill);
  background:var(--bg-alt);border:1px solid var(--line);color:var(--ink-2);font-size:12px;
  transition:.2s ease;
}
.tag:hover{background:var(--brand-soft);border-color:var(--brand);color:var(--brand)}
.article-actions{display:flex;flex-wrap:wrap;gap:12px;margin-top:24px}
/* ---------- 相关推荐 ---------- */
.related-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:24px}
.rec-card{
  display:flex;flex-direction:column;background:#FFFFFF;border:1px solid var(--line);
  border-radius:var(--r-md);overflow:hidden;box-shadow:var(--sh-1);
  transition:transform .2s ease,box-shadow .2s ease,border-color .2s ease;
}
.rec-card:hover{transform:translateY(-4px);box-shadow:var(--sh-2);border-color:#D3E1F1}
.rec-thumb{aspect-ratio:4/3;overflow:hidden;background:var(--bg-alt)}
.rec-thumb img{width:100%;height:100%;object-fit:cover;transition:transform .3s ease}
.rec-card:hover .rec-thumb img{transform:scale(1.04)}
.rec-body{padding:18px 20px 22px}
.badge{
  display:inline-flex;align-items:center;height:24px;padding:0 10px;border-radius:var(--r-pill);
  background:var(--brand-soft);color:var(--brand);font-size:12px;font-weight:600;
}
.rec-body h3{font-size:17px;font-weight:600;line-height:1.5;margin:12px 0 8px;color:var(--ink)}
.rec-card:hover h3{color:var(--brand)}
.rec-body p{font-size:14px;color:var(--ink-2);line-height:1.75}
/* ---------- CTA 带 ---------- */
.cta-band{padding:16px 0 72px}
.cta-inner{
  background:var(--brand-soft);border-radius:var(--r-lg);padding:48px;
  display:flex;align-items:center;justify-content:space-between;gap:32px;flex-wrap:wrap;
  border:1px solid #D8E6F6;
}
.cta-inner h2{font-size:clamp(22px,2.4vw,26px);font-weight:700;line-height:1.35;color:var(--brand-dark)}
.cta-inner p{font-size:15px;color:var(--ink-2);margin-top:10px;max-width:640px}
/* ---------- 页脚 ---------- */
.site-footer{background:var(--brand-dark);color:#D7E2F0;padding:64px 0 28px}
.footer-grid{display:grid;grid-template-columns:1.5fr 1fr 1fr 1fr;gap:36px}
.footer-brand{display:flex;align-items:center;gap:10px;color:#FFFFFF;margin-bottom:14px}
.footer-brand:hover{color:#9FE3DA}
.footer-brand .brand-text{display:flex;flex-direction:column;font-size:15px;font-weight:700;line-height:1.25}
.footer-brand .brand-text small{font-size:12px;font-weight:400;color:#9FB4CE;margin-top:3px}
.footer-desc{font-size:14px;line-height:1.85;color:#B9CADF;margin-bottom:16px;max-width:380px}
.footer-tags{display:flex;flex-wrap:wrap;gap:8px}
.footer-tags span{
  font-size:12px;padding:4px 10px;border-radius:var(--r-pill);
  border:1px solid rgba(255,255,255,.18);color:#D7E2F0;
}
.footer-col h4{font-size:14px;font-weight:600;color:#FFFFFF;margin-bottom:14px}
.footer-col ul{list-style:none;display:flex;flex-direction:column;gap:10px}
.footer-col a{color:#C3D3E6;font-size:14px}
.footer-col a:hover{color:#12A594}
.footer-divider{height:1px;background:rgba(255,255,255,.12);margin:34px 0 18px}
.footer-keywords{font-size:12px;line-height:1.9;color:rgba(255,255,255,.7);word-break:break-all}
.footer-bottom{
  display:flex;flex-wrap:wrap;align-items:center;justify-content:space-between;gap:12px;
  font-size:12px;color:rgba(255,255,255,.72);padding-top:6px;
}
.to-top{color:#D7E2F0;white-space:nowrap}
.to-top:hover{color:#12A594}
/* ---------- 入场动效 ---------- */
@media (prefers-reduced-motion: no-preference){
  .fade-up{animation:fadeUp .5s ease both}
  @keyframes fadeUp{from{opacity:0;transform:translateY(16px)}to{opacity:1;transform:none}}
}
/* ---------- 响应式 ---------- */
@media (max-width:1199px){
  .nav-list{gap:20px}
}
@media (max-width:1023px){
  .container{padding-left:20px;padding-right:20px}
  .section{padding:56px 0}
  .related-grid{grid-template-columns:repeat(2,1fr)}
  .footer-grid{grid-template-columns:1fr 1fr;gap:32px}
  .cta-inner{padding:36px}
  .article-shell{padding:36px 20px 0}
}
@media (max-width:900px){
  .topbar-note{display:none}
  .burger{display:flex}
  .nav-cta{display:none}
  .icon-btn{display:none}
  .nav-list{
    position:absolute;top:100%;left:0;right:0;display:flex;flex-direction:column;align-items:stretch;
    gap:0;margin:0;padding:8px 0 16px;background:#FFFFFF;border-bottom:1px solid var(--line);
    box-shadow:var(--sh-2);opacity:0;transform:translateY(-10px);pointer-events:none;transition:.22s ease;
    max-height:calc(100vh - 68px);overflow-y:auto;
  }
  .nav-list.is-open{opacity:1;transform:none;pointer-events:auto}
  .nav-list a{padding:13px 24px;border-left:3px solid transparent;font-size:16px;line-height:1.4}
  .nav-list a::after{display:none}
  .nav-list a.is-active{border-left-color:var(--brand);background:var(--bg-alt);color:var(--brand)}
  .nav-mobile-cta{display:block;padding:12px 24px 0}
  .nav-mobile-cta .btn{width:100%}
  .mainnav-inner{gap:16px}
}
@media (max-width:767px){
  .container{padding-left:16px;padding-right:16px}
  .section{padding:48px 0}
  .section-head{flex-direction:column;align-items:flex-start;gap:10px;margin-bottom:22px}
  .article-shell{padding:28px 16px 0}
  .article-body{font-size:16px;line-height:1.9}
  .article-body h2{font-size:24px;margin:32px 0 14px}
  .article-body h3{font-size:19px;margin:24px 0 10px}
  .breadcrumb li.current{max-width:46vw}
  .related-grid{grid-template-columns:1fr}
  .cta-band{padding:8px 0 56px}
  .cta-inner{padding:28px 22px;border-radius:var(--r-md)}
  .cta-inner .btn{width:100%}
  .footer-grid{grid-template-columns:1fr;gap:28px}
  .site-footer{padding:48px 0 24px}
  .footer-bottom{flex-direction:column;align-items:flex-start;gap:8px}
  .btn,.icon-btn,.burger{min-height:44px}
  .brand-text{font-size:14px}
  .brand-text small{font-size:11px}
}
@media (max-width:520px){
  .brand-text small{display:none}
  .article-actions .btn{width:100%}
  .cta-inner h2{font-size:21px}
}

/* roulang page: category1 */
:root{
  --blue:#1D4E89;
  --blue-dark:#163C6B;
  --blue-light:#E8F0FA;
  --teal:#12A594;
  --teal-dark:#0E8A7C;
  --warm:#F0873C;
  --ink:#16202E;
  --ink-2:#5A6B7F;
  --ink-3:#94A3B5;
  --bg:#FFFFFF;
  --bg-alt:#F5F8FC;
  --line:#E3EAF3;
  --r-card:16px;
  --r-v:20px;
  --r-img:12px;
  --shadow-1:0 4px 16px rgba(23,54,92,.08);
  --shadow-2:0 10px 28px rgba(23,54,92,.14);
  --shadow-3:0 16px 40px rgba(23,54,92,.18);
  --sec:80px;
}
*,*::before,*::after{box-sizing:border-box}
html{-webkit-text-size-adjust:100%}
body{
  margin:0;
  font-family:-apple-system,BlinkMacSystemFont,"PingFang SC","Microsoft YaHei","Noto Sans SC",system-ui,sans-serif;
  font-size:16px;
  line-height:1.7;
  color:var(--ink);
  background:var(--bg);
  -webkit-font-smoothing:antialiased;
}
img{max-width:100%;display:block;border:0}
a{color:var(--blue);text-decoration:none;transition:color .18s ease}
a:hover{color:var(--blue-dark)}
p{margin:0 0 16px}
h1,h2,h3,h4{margin:0;font-weight:700;letter-spacing:0;color:var(--ink)}
ul,ol{margin:0;padding:0}
button{font-family:inherit}
:focus-visible{outline:3px solid var(--blue);outline-offset:2px;box-shadow:0 0 0 2px #fff inset}
.container{width:100%;max-width:1200px;margin:0 auto;padding:0 24px}

/* ---------- 顶部信息条 ---------- */
.topbar{background:var(--blue-dark);color:#fff;font-size:12px}
.topbar-inner{display:flex;align-items:center;gap:16px;height:36px}
.topbar-domain{color:#fff;flex:0 0 auto;letter-spacing:.02em}
.topbar-domain:hover{color:#fff;text-decoration:underline}
.topbar-note{flex:1;text-align:center;color:rgba(255,255,255,.72);white-space:nowrap;overflow:hidden;text-overflow:ellipsis}
.topbar-links{display:flex;gap:20px;flex:0 0 auto}
.topbar-links a{color:rgba(255,255,255,.8)}
.topbar-links a:hover{color:#fff;text-decoration:underline}

/* ---------- 主导航 ---------- */
.site-header{position:sticky;top:0;z-index:80;background:#fff}
.mainnav{background:#fff;border-bottom:1px solid var(--line);transition:box-shadow .2s ease}
.site-header.is-stuck .mainnav{box-shadow:0 6px 20px rgba(23,54,92,.08)}
.mainnav-inner{display:flex;align-items:center;gap:20px;height:68px}
.brand{display:flex;align-items:center;gap:10px;color:var(--ink);flex:0 0 auto}
.brand-mark{width:32px;height:32px;border-radius:9px;background:var(--blue);color:#fff;display:grid;place-items:center;font-size:16px;font-weight:700;flex:0 0 auto}
.brand-text{display:flex;flex-direction:column;font-size:16px;font-weight:700;line-height:1.2;white-space:nowrap}
.brand-text small{font-size:12px;font-weight:400;color:var(--ink-3);margin-top:2px}
.nav-list{display:flex;align-items:center;gap:24px;list-style:none;margin:0 0 0 auto;padding:0}
.nav-list a{position:relative;display:inline-block;padding:23px 0;font-size:16px;color:var(--ink);white-space:nowrap}
.nav-list a::after{content:"";position:absolute;left:50%;bottom:15px;width:0;height:2px;background:var(--blue);transform:translateX(-50%);transition:width .18s ease}
.nav-list a:hover{color:var(--blue)}
.nav-list a:hover::after{width:100%}
.nav-list a.is-active{color:var(--blue);font-weight:600}
.nav-list a.is-active::after{width:100%}
.nav-actions{display:flex;align-items:center;gap:10px;flex:0 0 auto}
.icon-btn{width:40px;height:40px;border-radius:50%;border:1px solid var(--line);background:#fff;color:var(--ink-2);display:grid;place-items:center;cursor:pointer;transition:all .18s ease}
.icon-btn svg{width:18px;height:18px}
.icon-btn:hover{color:var(--blue);border-color:var(--blue);background:var(--blue-light)}
.icon-btn:active{transform:scale(.96)}
.burger{display:none;width:44px;height:44px;border:1px solid var(--line);background:#fff;border-radius:10px;padding:0;cursor:pointer;flex-direction:column;align-items:center;justify-content:center;gap:4px}
.burger span{display:block;width:18px;height:2px;background:var(--ink);border-radius:2px;transition:all .2s ease}
.burger:hover{border-color:var(--blue);background:var(--blue-light)}
.search-panel{display:none;border-top:1px solid var(--line);background:var(--bg-alt)}
.search-panel.is-open{display:block}
.search-form{display:flex;gap:12px;padding-top:16px;padding-bottom:16px}
.search-form input{flex:1;height:44px;border-radius:10px;border:1px solid var(--line);padding:0 16px;font-size:15px;color:var(--ink);background:#fff;transition:border-color .18s ease,box-shadow .18s ease}
.search-form input::placeholder{color:var(--ink-3)}
.search-form input:focus{outline:none;border-color:var(--blue);box-shadow:0 0 0 4px rgba(29,78,137,.12)}

/* ---------- 按钮 ---------- */
.btn{display:inline-flex;align-items:center;justify-content:center;gap:8px;min-height:44px;padding:13px 26px;border:1px solid transparent;border-radius:999px;font-size:15px;font-weight:600;line-height:1.2;cursor:pointer;transition:background .2s ease,color .2s ease,transform .2s ease,box-shadow .2s ease,border-color .2s ease;text-align:center}
.btn-primary{background:var(--blue);color:#fff;box-shadow:var(--shadow-1)}
.btn-primary:hover{background:var(--blue-dark);color:#fff;transform:translateY(-2px);box-shadow:var(--shadow-2)}
.btn-primary:active{transform:translateY(0);box-shadow:var(--shadow-1)}
.btn-ghost{background:#fff;color:var(--blue);border-color:var(--line);border-radius:10px}
.btn-ghost:hover{background:var(--blue-light);border-color:var(--blue);color:var(--blue-dark);transform:translateY(-2px)}
.btn-ghost:active{transform:translateY(0)}
.btn-accent{background:var(--teal);color:#fff;box-shadow:var(--shadow-1)}
.btn-accent:hover{background:var(--teal-dark);color:#fff;transform:translateY(-2px);box-shadow:var(--shadow-2)}
.btn-accent:active{transform:translateY(0)}
.btn-sm{min-height:40px;padding:10px 18px;font-size:14px}

/* ---------- 分类头 ---------- */
.page-hero{position:relative;background:var(--bg-alt);padding:72px 0 64px;overflow:hidden}
.page-hero::after{content:"";position:absolute;right:-90px;top:-90px;width:380px;height:380px;border-radius:50%;background:radial-gradient(circle,rgba(29,78,137,.07),rgba(29,78,137,0) 70%);pointer-events:none}
.pill{display:inline-flex;align-items:center;gap:8px;background:var(--blue-light);color:var(--blue);font-size:12px;font-weight:600;padding:6px 14px;border-radius:999px;margin-bottom:20px}
.pill::before{content:"";width:6px;height:6px;border-radius:50%;background:var(--teal)}
.page-hero h1{font-size:clamp(30px,4vw,44px);line-height:1.25;font-weight:700;max-width:15em}
.hero-lead{margin-top:18px;font-size:16px;line-height:1.85;color:var(--ink-2);max-width:34em}
.hero-actions{display:flex;flex-wrap:wrap;gap:14px;margin-top:28px}
.hero-points{display:flex;flex-wrap:wrap;align-items:center;gap:14px;margin-top:28px;font-size:14px;color:var(--ink-2)}
.hero-points span{display:inline-flex;align-items:center;gap:14px}
.hero-points span+span::before{content:"";display:inline-block;width:1px;height:14px;background:var(--line);margin-right:14px}
.hero-media{position:relative;max-width:300px;margin:0 auto;padding:12px}
.hero-media img{position:relative;z-index:2;width:100%;aspect-ratio:9/16;object-fit:cover;border-radius:var(--r-v);box-shadow:var(--shadow-2)}
.hero-media::before,.hero-media::after{content:"";position:absolute;inset:12px;border-radius:var(--r-v);background:#fff;box-shadow:var(--shadow-1)}
.hero-media::before{transform:rotate(-4deg) scale(.94);z-index:1}
.hero-media::after{transform:rotate(4deg) scale(.88);z-index:0}
.media-badge{position:absolute;z-index:3;left:24px;top:24px;background:var(--warm);color:#fff;font-size:12px;font-weight:600;padding:5px 12px;border-radius:999px}

/* ---------- 通用板块 ---------- */
.section{padding:var(--sec) 0}
.section-alt{background:var(--bg-alt)}
.section-head{max-width:760px;margin-bottom:32px}
.eyebrow{display:block;font-size:12px;font-weight:700;color:var(--teal);letter-spacing:.08em;margin-bottom:10px}
.section-head h2{font-size:clamp(24px,3vw,30px);line-height:1.3}
.section-head p{margin-top:14px;font-size:16px;line-height:1.85;color:var(--ink-2)}
.section-foot{display:flex;justify-content:center;margin-top:36px}

/* ---------- 筛选标签 ---------- */
.chips{display:flex;flex-wrap:wrap;gap:10px;margin-bottom:28px}
.chip{display:inline-flex;align-items:center;justify-content:center;min-height:40px;padding:8px 16px;border-radius:999px;border:1px solid var(--line);background:#fff;color:var(--ink-2);font-size:14px;transition:all .18s ease}
.chip:hover{border-color:var(--blue);color:var(--blue);background:var(--blue-light)}
.chip:active{transform:scale(.97)}
.chip.is-on{background:var(--blue);border-color:var(--blue);color:#fff}
.chip.is-on:hover{background:var(--blue-dark);border-color:var(--blue-dark);color:#fff}

/* ---------- 竖屏卡 ---------- */
.v-grid{display:grid;grid-template-columns:repeat(4,minmax(0,1fr));gap:24px}
.vcard{position:relative;display:block;aspect-ratio:9/16;border-radius:var(--r-v);overflow:hidden;box-shadow:var(--shadow-1);background:#dbe5f1;transition:transform .2s ease,box-shadow .2s ease}
.vcard img{width:100%;height:100%;object-fit:cover;transition:transform .3s ease}
.vcard::after{content:"";position:absolute;left:0;right:0;bottom:0;height:62%;background:linear-gradient(to top,rgba(11,26,44,.88),rgba(11,26,44,0));pointer-events:none}
.vcard:hover{transform:translateY(-4px);box-shadow:var(--shadow-2);color:inherit}
.vcard:hover img{transform:scale(1.04)}
.vcard:focus-visible{outline:3px solid var(--blue);outline-offset:3px}
.v-tag{position:absolute;z-index:3;left:14px;top:14px;background:rgba(255,255,255,.92);color:var(--ink);font-size:12px;font-weight:600;padding:4px 10px;border-radius:999px}
.play{position:absolute;z-index:3;left:50%;top:50%;width:56px;height:56px;margin:-28px 0 0 -28px;border-radius:50%;background:rgba(255,255,255,.9);box-shadow:var(--shadow-1);transition:transform .2s ease}
.play::after{content:"";position:absolute;left:22px;top:19px;border-style:solid;border-width:9px 0 9px 15px;border-color:transparent transparent transparent var(--blue)}
.vcard:hover .play{transform:scale(1.08)}
.vcard-body{position:absolute;z-index:3;left:16px;right:16px;bottom:16px;display:block;color:#fff}
.v-title{display:-webkit-box;-webkit-line-clamp:2;-webkit-box-orient:vertical;overflow:hidden;font-size:16px;font-weight:600;line-height:1.4;color:#fff}
.v-meta{display:block;margin-top:8px;font-size:12px;color:rgba(255,255,255,.8);white-space:nowrap;overflow:hidden;text-overflow:ellipsis}

/* ---------- 进入方式 ---------- */
.ways{display:grid;grid-template-columns:repeat(2,minmax(0,1fr));gap:40px;align-items:center}
.shot{border-radius:var(--r-card);overflow:hidden;box-shadow:var(--shadow-1);margin:0}
.shot img{width:100%;aspect-ratio:4/3;object-fit:cover}
.way-list{list-style:none}
.way-list li{display:flex;gap:18px;padding:22px 20px;border-bottom:1px dashed var(--line);border-radius:12px;transition:background .18s ease}
.way-list li:first-child{border-top:1px dashed var(--line)}
.way-list li:hover{background:#fff;box-shadow:var(--shadow-1)}
.way-idx{flex:0 0 34px;width:34px;height:34px;border-radius:50%;background:var(--blue-light);color:var(--blue);font-size:13px;font-weight:700;display:grid;place-items:center}
.way-list h3{font-size:18px;font-weight:600;line-height:1.5;margin-bottom:6px}
.way-list p{margin:0;font-size:14px;line-height:1.8;color:var(--ink-2)}

/* ---------- 步骤 ---------- */
.steps{list-style:none;max-width:900px}
.step{position:relative;display:flex;gap:20px;padding-bottom:36px}
.step:last-child{padding-bottom:0}
.step::before{content:"";position:absolute;left:17px;top:44px;bottom:0;width:2px;background:var(--line)}
.step:last-child::before{display:none}
.step-num{position:relative;z-index:1;flex:0 0 36px;width:36px;height:36px;border-radius:50%;background:var(--blue-light);color:var(--blue);font-size:13px;font-weight:700;display:grid;place-items:center}
.step-body{flex:1;display:flex;gap:20px;align-items:flex-start;background:#fff;border:1px solid var(--line);border-radius:var(--r-card);padding:20px 22px;box-shadow:var(--shadow-1);transition:box-shadow .2s ease,transform .2s ease}
.step-body:hover{box-shadow:var(--shadow-2);transform:translateY(-2px)}
.step-text{flex:1;min-width:0}
.step-text h3{font-size:18px;font-weight:600;line-height:1.5;margin-bottom:8px}
.step-text p{margin:0;font-size:14px;line-height:1.85;color:var(--ink-2)}
.step-body img{flex:0 0 112px;width:112px;height:84px;object-fit:cover;border-radius:var(--r-img)}

/* ---------- FAQ ---------- */
.faq{max-width:860px}
.faq-item{background:#fff;border:1px solid var(--line);border-radius:14px;margin-bottom:12px;overflow:hidden;transition:border-color .2s ease,box-shadow .2s ease}
.faq-item:hover{border-color:#cfddee}
.faq-item.is-open{border-color:#cbdcef;box-shadow:var(--shadow-1)}
.faq-q{display:flex;align-items:center;justify-content:space-between;gap:16px;width:100%;padding:18px 22px;background:none;border:0;font-size:16px;font-weight:600;line-height:1.6;color:var(--ink);text-align:left;cursor:pointer}
.faq-q:hover{color:var(--blue)}
.faq-item.is-open .faq-q{color:var(--blue)}
.faq-icon{flex:0 0 auto;position:relative;width:18px;height:18px;transition:transform .25s ease;color:var(--ink-3)}
.faq-icon::before,.faq-icon::after{content:"";position:absolute;background:currentColor;border-radius:2px}
.faq-icon::before{left:50%;top:1px;width:2px;height:16px;margin-left:-1px}
.faq-icon::after{top:50%;left:1px;height:2px;width:16px;margin-top:-1px}
.faq-item.is-open .faq-icon{transform:rotate(45deg);color:var(--blue)}
.faq-a{max-height:0;overflow:hidden;transition:max-height .3s ease}
.faq-a-inner{padding:0 22px 18px;font-size:15px;line-height:1.85;color:var(--ink-2)}
.faq-item.is-open .faq-a-inner{border-left:3px solid var(--blue);padding-left:17px}

/* ---------- CTA ---------- */
.cta-band{background:var(--blue-light);border-radius:var(--r-v);padding:48px;display:flex;align-items:center;justify-content:space-between;gap:32px}
.cta-band h2{font-size:clamp(22px,2.6vw,28px);line-height:1.3}
.cta-band p{margin:12px 0 0;font-size:15px;line-height:1.8;color:var(--ink-2);max-width:34em}
.cta-band .btn{flex:0 0 auto;min-height:52px;padding:16px 34px;font-size:16px}

/* ---------- 页脚 ---------- */
.site-footer{background:var(--blue-dark);color:#D7E2F0;padding:64px 0 28px;margin-top:0}
.footer-grid{display:grid;grid-template-columns:1.5fr 1fr 1fr 1fr;gap:40px}
.footer-brand{display:flex;align-items:center;gap:10px;color:#fff}
.footer-brand .brand-mark{background:#fff;color:var(--blue-dark)}
.footer-brand .brand-text{color:#fff}
.footer-brand .brand-text small{color:rgba(255,255,255,.6)}
.footer-desc{margin:18px 0 16px;font-size:14px;line-height:1.85;color:rgba(255,255,255,.72);max-width:32em}
.footer-tags{display:flex;flex-wrap:wrap;gap:8px}
.footer-tags span{font-size:12px;padding:4px 10px;border-radius:999px;border:1px solid rgba(255,255,255,.2);color:rgba(255,255,255,.78)}
.footer-col h4{font-size:15px;font-weight:600;color:#fff;margin-bottom:16px}
.footer-col ul{list-style:none}
.footer-col li{margin-bottom:10px}
.footer-col a{font-size:14px;color:rgba(255,255,255,.76)}
.footer-col a:hover{color:var(--teal)}
.footer-divider{height:1px;background:rgba(255,255,255,.12);margin:36px 0 20px}
.footer-keywords{font-size:12px;line-height:1.9;color:rgba(255,255,255,.55)}
.footer-bottom{display:flex;flex-wrap:wrap;align-items:center;justify-content:space-between;gap:14px;font-size:12px;color:rgba(255,255,255,.6)}
.to-top{color:rgba(255,255,255,.8);display:inline-flex;align-items:center;gap:6px}
.to-top:hover{color:var(--teal)}

/* ---------- 响应式 ---------- */
@media (max-width:1199px){
  .v-grid{grid-template-columns:repeat(3,minmax(0,1fr))}
  .cta-band{padding:40px}
}
@media (max-width:1023px){
  :root{--sec:64px}
  .topbar-note{display:none}
  .nav-list{display:none}
  .burger{display:flex}
  .nav-cta{display:none}
  .mainnav-inner{justify-content:space-between}
  .brand-text{font-size:15px}
  .page-hero{padding:56px 0 52px}
  .hero-media{max-width:260px;margin-top:36px}
  .ways{grid-template-columns:1fr;gap:28px}
  .v-grid{display:flex;overflow-x:auto;gap:16px;scroll-snap-type:x mandatory;padding-bottom:12px;-webkit-overflow-scrolling:touch}
  .vcard{flex:0 0 240px;scroll-snap-align:start}
  .v-grid::-webkit-scrollbar{height:6px}
  .v-grid::-webkit-scrollbar-thumb{background:#c9d8e9;border-radius:999px}
  .cta-band{flex-direction:column;align-items:flex-start;padding:36px}
  .footer-grid{grid-template-columns:1fr 1fr;gap:32px}
  .step-body img{flex-basis:96px;width:96px;height:72px}
  body.nav-open{overflow:hidden}
  body.nav-open .nav-list{
    display:flex;
    flex-direction:column;
    align-items:stretch;
    gap:0;
    position:fixed;
    left:0;right:0;
    top:104px;
    bottom:0;
    margin:0;
    padding:8px 20px 28px;
    background:#fff;
    overflow-y:auto;
    box-shadow:var(--shadow-3);
    z-index:70;
  }
  body.nav-open .nav-list li{border-bottom:1px solid var(--line)}
  body.nav-open .nav-list a{display:block;padding:14px 12px;font-size:16px;line-height:1.4}
  body.nav-open .nav-list a::after{display:none}
  body.nav-open .nav-list a.is-active{border-left:3px solid var(--blue);padding-left:16px}
}
@media (max-width:767px){
  :root{--sec:48px}
  .container{padding:0 16px}
  .topbar-links{gap:14px}
  .topbar-inner{height:34px}
  .brand-text small{display:none}
  .brand-text{font-size:14px;max-width:9em;white-space:normal;line-height:1.25}
  .mainnav-inner{height:60px;gap:12px}
  .page-hero{padding:44px 0 40px}
  .page-hero h1{font-size:clamp(26px,7vw,32px)}
  .hero-actions .btn{width:100%}
  .hero-points{font-size:13px;gap:10px}
  .hero-points span+span::before{margin-right:10px}
  .hero-media{max-width:220px}
  .hero-media::after{display:none}
  .section-head p{font-size:15px}
  .vcard{flex:0 0 220px}
  .way-list li{padding:18px 14px}
  .step-body{flex-direction:column;align-items:flex-start;padding:18px}
  .step-body img{order:2;width:100%;height:120px;flex-basis:auto;margin-top:12px}
  .faq-q{padding:16px}
  .faq-a-inner{padding:0 16px 16px;font-size:14px}
  .faq-item.is-open .faq-a-inner{padding-left:13px}
  .cta-band{padding:28px 22px;border-radius:16px}
  .cta-band .btn{width:100%}
  .footer-grid{grid-template-columns:1fr;gap:28px}
  .site-footer{padding:48px 0 24px}
  .footer-bottom{flex-direction:column;align-items:flex-start;gap:10px}
  .search-form{flex-direction:column}
  .search-form .btn{width:100%}
  body.nav-open .nav-list{top:94px}
}
@media (max-width:519px){
  .hero-points span{width:100%}
  .hero-points span+span::before{display:none}
  .media-badge{left:18px;top:18px}
}
@media (prefers-reduced-motion:reduce){
  *{transition:none !important;animation:none !important}
}

/* roulang page: category2 */
:root{
  --primary:#1D4E89;
  --primary-dark:#163C6B;
  --primary-light:#E8F0FA;
  --accent:#12A594;
  --accent-dark:#0E8879;
  --warm:#F0873C;
  --ink:#16202E;
  --ink-2:#5A6B7F;
  --ink-3:#94A3B5;
  --bg:#FFFFFF;
  --bg-alt:#F5F8FC;
  --border:#E3EAF3;
  --footer-bg:#163C6B;
  --footer-ink:#D7E2F0;
  --radius-card:16px;
  --radius-cover:20px;
  --radius-img:12px;
  --radius-btn:999px;
  --radius-input:10px;
  --shadow-1:0 4px 16px rgba(23,54,92,.08);
  --shadow-2:0 10px 28px rgba(23,54,92,.14);
  --shadow-3:0 16px 40px rgba(23,54,92,.18);
  --space-section:80px;
  --font: "PingFang SC","Microsoft YaHei","Noto Sans SC",system-ui,-apple-system,"Segoe UI",Roboto,Helvetica,Arial,sans-serif;
}
*,*::before,*::after{box-sizing:border-box}
html{-webkit-text-size-adjust:100%;scroll-behavior:smooth}
body{
  margin:0;
  font-family:var(--font);
  font-size:16px;
  line-height:1.85;
  color:var(--ink);
  background:var(--bg);
  -webkit-font-smoothing:antialiased;
}
img{display:block;max-width:100%;height:auto}
a{color:var(--primary);text-decoration:none;transition:color .18s ease}
a:hover{color:var(--primary-dark)}
button{font-family:inherit;font-size:inherit;cursor:pointer;border:0;background:none}
ul,ol{margin:0;padding:0;list-style:none}
h1,h2,h3,h4,p{margin:0}
:focus-visible{outline:3px solid var(--primary);outline-offset:2px}
.container{width:100%;max-width:1200px;margin:0 auto;padding:0 24px}

/* ---------- 顶部信息条 ---------- */
.topbar{background:var(--primary-dark);color:#fff;font-size:12px;line-height:36px}
.topbar-inner{display:flex;align-items:center;justify-content:space-between;gap:20px;height:36px}
.topbar-domain{color:#fff;font-weight:600;letter-spacing:.2px}
.topbar-domain:hover{color:#fff;text-decoration:underline;text-underline-offset:3px}
.topbar-note{color:#C9D9EE;flex:1;text-align:center;white-space:nowrap;overflow:hidden;text-overflow:ellipsis}
.topbar-links{display:flex;gap:20px}
.topbar-links a{color:#D7E2F0;text-underline-offset:3px}
.topbar-links a:hover{color:#fff;text-decoration:underline}

/* ---------- 主导航 ---------- */
.mainnav{position:sticky;top:0;z-index:60;background:#fff;border-bottom:1px solid var(--border);transition:box-shadow .2s ease}
.mainnav.is-stuck{box-shadow:0 6px 20px rgba(23,54,92,.08)}
.mainnav-inner{display:flex;align-items:center;justify-content:space-between;gap:24px;height:68px}
.brand{display:flex;align-items:center;gap:10px;color:var(--ink);flex-shrink:0}
.brand:hover{color:var(--primary)}
.brand-mark{width:32px;height:32px;border-radius:10px;background:var(--primary);color:#fff;font-weight:700;font-size:16px;display:flex;align-items:center;justify-content:center;flex-shrink:0}
.brand-text{font-size:15px;font-weight:700;line-height:1.2;letter-spacing:0}
.brand-text small{display:block;font-size:12px;font-weight:400;color:var(--ink-3);margin-top:2px}
.nav-list{display:flex;align-items:center;gap:28px}
.nav-list a{position:relative;display:block;padding:8px 0;font-size:15.5px;color:var(--ink);white-space:nowrap}
.nav-list a::after{content:"";position:absolute;left:50%;right:50%;bottom:0;height:2px;background:var(--primary);transition:left .18s ease,right .18s ease}
.nav-list a:hover{color:var(--primary)}
.nav-list a:hover::after{left:0;right:0}
.nav-list a.is-active{color:var(--primary);font-weight:600}
.nav-list a.is-active::after{left:0;right:0}
.nav-item-cta{display:none}
.nav-actions{display:flex;align-items:center;gap:12px;flex-shrink:0}
.icon-btn{width:40px;height:40px;border-radius:10px;border:1px solid var(--border);background:#fff;color:var(--ink-2);display:inline-flex;align-items:center;justify-content:center;transition:background .2s ease,color .2s ease,border-color .2s ease}
.icon-btn svg{width:18px;height:18px}
.icon-btn:hover{background:var(--primary-light);color:var(--primary);border-color:var(--primary-light)}
.icon-btn:active{transform:translateY(1px)}
.burger{display:none;width:44px;height:44px;border-radius:10px;border:1px solid var(--border);background:#fff;flex-direction:column;align-items:center;justify-content:center;gap:5px}
.burger span{display:block;width:18px;height:2px;background:var(--ink);border-radius:2px;transition:transform .2s ease,opacity .2s ease}
.burger.is-open span:nth-child(1){transform:translateY(7px) rotate(45deg)}
.burger.is-open span:nth-child(2){opacity:0}
.burger.is-open span:nth-child(3){transform:translateY(-7px) rotate(-45deg)}

/* ---------- 搜索面板 ---------- */
.search-panel{display:none;border-top:1px solid var(--border);background:var(--bg-alt)}
.search-panel.is-open{display:block}
.search-form{display:flex;gap:12px;padding-top:14px;padding-bottom:14px}
.search-form input[type="search"]{flex:1;height:44px;border-radius:var(--radius-input);border:1px solid var(--border);padding:0 14px;font-size:15px;color:var(--ink);background:#fff;transition:border-color .18s ease,box-shadow .18s ease}
.search-form input[type="search"]::placeholder{color:var(--ink-3)}
.search-form input[type="search"]:focus{outline:none;border-color:var(--primary);box-shadow:0 0 0 4px rgba(29,78,137,.12)}

/* ---------- 按钮 ---------- */
.btn{display:inline-flex;align-items:center;justify-content:center;gap:8px;min-height:44px;padding:0 24px;border-radius:var(--radius-btn);font-size:15px;font-weight:600;border:1px solid transparent;line-height:1;transition:background .2s ease,color .2s ease,box-shadow .2s ease,transform .2s ease,border-color .2s ease}
.btn-primary{background:var(--primary);color:#fff}
.btn-primary:hover{background:var(--primary-dark);color:#fff;transform:translateY(-2px);box-shadow:var(--shadow-2)}
.btn-primary:active{transform:translateY(0);box-shadow:var(--shadow-1)}
.btn-ghost{background:#fff;color:var(--primary);border-color:var(--border)}
.btn-ghost:hover{background:var(--primary-light);border-color:var(--primary);color:var(--primary-dark);transform:translateY(-2px)}
.btn-ghost:active{transform:translateY(0)}
.btn-accent{background:var(--accent);color:#fff}
.btn-accent:hover{background:var(--accent-dark);color:#fff;transform:translateY(-2px);box-shadow:var(--shadow-2)}
.btn-accent:active{transform:translateY(0)}
.btn-sm{min-height:40px;font-size:14px;padding:0 18px}
.btn-lg{min-height:52px;font-size:16px;padding:0 32px}

/* ---------- 分类头 ---------- */
.cat-head{position:relative;overflow:hidden;background:var(--bg-alt);padding:72px 0 64px;border-bottom:1px solid var(--border)}
.cat-head::before{content:"";position:absolute;inset:0;background-image:url("/assets/images/backpic/back-1.webp");background-size:cover;background-position:center;opacity:.08;pointer-events:none}
.cat-head-inner{position:relative;display:grid;grid-template-columns:1.15fr .85fr;gap:48px;align-items:center}
.eyebrow{display:inline-flex;align-items:center;gap:8px;background:var(--primary-light);color:var(--primary);font-size:12px;font-weight:600;padding:6px 14px;border-radius:999px;margin-bottom:18px}
.eyebrow .dot{width:6px;height:6px;border-radius:50%;background:var(--accent)}
.cat-head h1{font-size:clamp(30px,4.2vw,46px);line-height:1.25;font-weight:700;letter-spacing:0;color:var(--ink)}
.cat-head h1 em{font-style:normal;color:var(--primary)}
.cat-lead{margin-top:18px;font-size:16px;line-height:1.85;color:var(--ink-2);max-width:640px}
.cat-meta{display:flex;flex-wrap:wrap;align-items:center;gap:14px;margin-top:24px;font-size:13px;color:var(--ink-3)}
.cat-meta span{display:inline-flex;align-items:center;gap:6px}
.cat-meta .sep{width:1px;height:12px;background:var(--border);display:inline-block}
.tag{display:inline-flex;align-items:center;height:24px;padding:0 10px;border-radius:999px;background:var(--primary-light);color:var(--primary);font-size:12px;font-weight:600}
.cover-wrap{position:relative;justify-self:end;width:100%;max-width:380px}
.cover-wrap img{width:100%;aspect-ratio:3/4;object-fit:cover;border-radius:var(--radius-cover);box-shadow:var(--shadow-2);border:1px solid rgba(23,54,92,.06)}
.cover-badge{position:absolute;left:-14px;bottom:24px;background:#fff;border:1px solid var(--border);border-radius:14px;padding:12px 16px;box-shadow:var(--shadow-3);font-size:13px;color:var(--ink-2);line-height:1.5}
.cover-badge strong{display:block;font-size:18px;color:var(--primary);font-weight:700}

/* ---------- 通用板块 ---------- */
.section{padding:var(--space-section) 0}
.section-alt{background:var(--bg-alt)}
.section-head{max-width:760px;margin-bottom:32px}
.section-head h2{font-size:clamp(24px,2.6vw,32px);font-weight:700;line-height:1.3;color:var(--ink);letter-spacing:0}
.section-head p{margin-top:12px;font-size:15.5px;line-height:1.85;color:var(--ink-2)}
.section-head.center{margin-left:auto;margin-right:auto;text-align:center}

/* ---------- 图文交替 ---------- */
.split-row{display:grid;grid-template-columns:5fr 7fr;gap:40px;align-items:center;margin-bottom:56px}
.split-row:last-child{margin-bottom:0}
.split-row.is-flip{grid-template-columns:7fr 5fr}
.split-row.is-flip .split-media{order:2}
.split-row.is-flip .split-text{order:1}
.media-card{background:#fff;border:1px solid var(--border);border-radius:var(--radius-card);overflow:hidden;box-shadow:var(--shadow-1);transition:transform .2s ease,box-shadow .2s ease}
.media-card:hover{transform:translateY(-4px);box-shadow:var(--shadow-2)}
.media-card img{width:100%;aspect-ratio:4/3;object-fit:cover}
.media-card .media-note{padding:14px 18px;font-size:13px;color:var(--ink-3);border-top:1px solid var(--border);line-height:1.6}
.split-text .step-label{display:inline-flex;align-items:center;justify-content:center;width:32px;height:32px;border-radius:50%;background:var(--primary-light);color:var(--primary);font-size:14px;font-weight:700;margin-bottom:14px}
.split-text h3{font-size:20px;font-weight:600;line-height:1.5;color:var(--ink)}
.split-text p{margin-top:14px;font-size:15.5px;line-height:1.9;color:var(--ink-2)}
.split-text .text-link{display:inline-flex;align-items:center;gap:6px;margin-top:18px;font-size:14px;font-weight:600;color:var(--primary)}
.split-text .text-link span{transition:transform .2s ease}
.split-text .text-link:hover span{transform:translateX(4px)}

/* ---------- 数字速览卡 ---------- */
.stat-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:24px}
.stat-card{background:#fff;border:1px solid var(--border);border-radius:var(--radius-card);padding:24px;box-shadow:var(--shadow-1);transition:transform .2s ease,box-shadow .2s ease,border-color .2s ease}
.stat-card:hover{transform:translateY(-4px);box-shadow:var(--shadow-2);border-color:#CFDDEE}
.stat-num{font-size:34px;font-weight:700;color:var(--primary);line-height:1.1;letter-spacing:0}
.stat-card h3{margin-top:10px;font-size:16px;font-weight:600;color:var(--ink)}
.stat-card p{margin-top:8px;font-size:14px;line-height:1.8;color:var(--ink-2)}

/* ---------- 分区对照表 ---------- */
.matrix{margin-top:8px}
.matrix-cell{margin-bottom:24px}
.matrix-card{height:100%;background:#fff;border:1px solid var(--border);border-left:3px solid var(--primary);border-radius:var(--radius-card);padding:22px;box-shadow:var(--shadow-1);transition:transform .2s ease,box-shadow .2s ease,border-left-color .2s ease}
.matrix-card:hover{transform:translateY(-4px);box-shadow:var(--shadow-2);border-left-color:var(--accent)}
.matrix-card h3{font-size:17px;font-weight:600;color:var(--ink)}
.matrix-card .matrix-use{margin-top:10px;font-size:14.5px;line-height:1.8;color:var(--ink-2)}
.matrix-card .matrix-when{margin-top:14px;padding-top:14px;border-top:1px dashed var(--border);font-size:13px;color:var(--ink-3)}
.matrix-card .matrix-when b{color:var(--accent);font-weight:600}
.matrix-card a{display:inline-flex;align-items:center;gap:6px;margin-top:16px;font-size:14px;font-weight:600;color:var(--primary)}
.matrix-card a:hover{color:var(--primary-dark);text-decoration:underline;text-underline-offset:4px}

/* ---------- FAQ ---------- */
.faq-list{max-width:860px;margin:0 auto}
.faq-item{background:#fff;border:1px solid var(--border);border-radius:14px;margin-bottom:12px;padding:0 22px;box-shadow:var(--shadow-1);transition:box-shadow .2s ease,border-color .2s ease}
.faq-item:hover{box-shadow:var(--shadow-2)}
.faq-item.is-open{border-color:#CFDDEE;box-shadow:var(--shadow-2);position:relative}
.faq-item.is-open::before{content:"";position:absolute;left:0;top:14px;bottom:14px;width:3px;border-radius:3px;background:var(--primary)}
.faq-q{display:flex;align-items:center;justify-content:space-between;gap:16px;width:100%;text-align:left;padding:18px 0;font-size:16px;font-weight:600;color:var(--ink);line-height:1.6;transition:color .2s ease}
.faq-q:hover{color:var(--primary)}
.faq-icon{flex-shrink:0;width:22px;height:22px;color:var(--ink-2);transition:transform .25s ease,color .25s ease}
.faq-item.is-open .faq-icon{transform:rotate(45deg);color:var(--primary)}
.faq-a{max-height:0;overflow:hidden;transition:max-height .3s ease}
.faq-item.is-open .faq-a{max-height:420px}
.faq-a p{padding:0 0 20px;font-size:15px;line-height:1.85;color:var(--ink-2)}

/* ---------- CTA 带 ---------- */
.cta-band{background:var(--primary-light);border-radius:var(--radius-cover);padding:48px;display:grid;grid-template-columns:1.4fr .6fr;gap:32px;align-items:center;border:1px solid #D8E5F5}
.cta-band h2{font-size:clamp(22px,2.4vw,28px);font-weight:700;line-height:1.35;color:var(--ink)}
.cta-band p{margin-top:12px;font-size:15px;line-height:1.85;color:var(--ink-2);max-width:560px}
.cta-actions{display:flex;justify-content:flex-end;flex-wrap:wrap;gap:12px}

/* ---------- 页脚 ---------- */
.site-footer{background:var(--footer-bg);color:var(--footer-ink);padding:64px 0 28px;margin-top:0}
.footer-grid{display:grid;grid-template-columns:1.6fr 1fr 1fr 1fr;gap:40px}
.footer-brand{display:flex;align-items:center;gap:10px;color:#fff;margin-bottom:16px}
.footer-brand .brand-mark{background:#fff;color:var(--primary-dark)}
.footer-brand .brand-text{color:#fff}
.footer-brand .brand-text small{color:#9FB7D4}
.footer-desc{font-size:14px;line-height:1.85;color:#BFD2E6;max-width:340px}
.footer-tags{display:flex;flex-wrap:wrap;gap:8px;margin-top:18px}
.footer-tags span{display:inline-flex;align-items:center;height:26px;padding:0 12px;border-radius:999px;border:1px solid rgba(255,255,255,.18);font-size:12px;color:#D7E2F0}
.footer-col h4{font-size:15px;font-weight:600;color:#fff;margin-bottom:16px}
.footer-col ul li{margin-bottom:10px}
.footer-col ul li a{font-size:14px;color:#BFD2E6;line-height:1.7}
.footer-col ul li a:hover{color:var(--accent);text-decoration:underline;text-underline-offset:4px}
.footer-divider{height:1px;background:rgba(255,255,255,.12);margin:36px 0 20px}
.footer-keywords{font-size:12px;color:rgba(255,255,255,.7);line-height:1.8}
.footer-bottom{display:flex;flex-wrap:wrap;align-items:center;justify-content:space-between;gap:12px;font-size:12px;color:rgba(255,255,255,.7)}
.to-top{color:#D7E2F0;display:inline-flex;align-items:center;gap:6px}
.to-top:hover{color:var(--accent)}

/* ---------- 入场动效 ---------- */
@media (prefers-reduced-motion: no-preference){
  .fade-up{animation:fadeUp .6s ease both}
  @keyframes fadeUp{from{opacity:0;transform:translateY(16px)}to{opacity:1;transform:translateY(0)}}
}

/* ---------- 响应式 ---------- */
@media (max-width:1199px){
  .nav-list{gap:20px}
  .nav-list a{font-size:15px}
}
@media (max-width:1023px){
  :root{--space-section:64px}
  .container{padding:0 20px}
  .topbar-note{display:none}
  .nav-list{position:absolute;top:100%;left:0;right:0;display:none;flex-direction:column;align-items:stretch;gap:0;background:#fff;padding:8px 0 20px;border-bottom:1px solid var(--border);box-shadow:var(--shadow-3)}
  .nav-list.is-open{display:flex}
  .nav-list li{width:100%}
  .nav-list a{padding:13px 20px;font-size:16px;border-left:3px solid transparent}
  .nav-list a::after{display:none}
  .nav-list a.is-active{background:var(--bg-alt);border-left-color:var(--primary);color:var(--primary)}
  .nav-item-cta{display:block;padding:12px 20px 0}
  .nav-item-cta .btn{width:100%;min-height:44px}
  .burger{display:inline-flex}
  .nav-cta{display:none}
  .cat-head{padding:56px 0 48px}
  .cat-head-inner{grid-template-columns:1fr;gap:36px}
  .cover-wrap{justify-self:start;max-width:320px}
  .split-row,.split-row.is-flip{grid-template-columns:1fr;gap:28px}
  .split-row.is-flip .split-media{order:0}
  .stat-grid{grid-template-columns:1fr 1fr;gap:20px}
  .cta-band{grid-template-columns:1fr;padding:36px}
  .cta-actions{justify-content:flex-start}
  .footer-grid{grid-template-columns:1fr 1fr;gap:32px}
}
@media (max-width:767px){
  :root{--space-section:48px}
  .container{padding:0 16px}
  .topbar-links{gap:14px}
  .cat-head h1{font-size:clamp(26px,7vw,32px)}
  .cat-lead{font-size:15px}
  .cover-wrap{max-width:240px}
  .cover-badge{left:0;bottom:12px;padding:10px 14px;font-size:12px}
  .cover-badge strong{font-size:16px}
  .stat-grid{grid-template-columns:1fr}
  .split-text h3{font-size:18px}
  .faq-item{padding:0 16px}
  .faq-q{font-size:15px;padding:16px 0}
  .cta-band{padding:28px 20px;border-radius:16px}
  .btn-lg{width:100%;padding:0 20px}
  .cta-actions{width:100%}
  .site-footer{padding:48px 0 24px}
  .footer-grid{grid-template-columns:1fr;gap:28px}
  .footer-bottom{flex-direction:column;align-items:flex-start;gap:8px}
  .search-form{flex-direction:column}
  .search-form .btn{width:100%}
}

/* roulang page: category3 */
:root{
  --primary:#1D4E89;
  --primary-dark:#163C6B;
  --primary-light:#E8F0FA;
  --accent:#12A594;
  --accent-dark:#0E8B7D;
  --warm:#F0873C;
  --text:#16202E;
  --text-2:#5A6B7F;
  --text-3:#94A3B5;
  --bg:#FFFFFF;
  --bg-alt:#F5F8FC;
  --border:#E3EAF3;
  --radius-card:16px;
  --radius-vcard:20px;
  --radius-img:12px;
  --radius-pill:999px;
  --radius-sm:10px;
  --shadow-1:0 4px 16px rgba(23,54,92,.08);
  --shadow-2:0 10px 28px rgba(23,54,92,.14);
  --shadow-3:0 16px 40px rgba(23,54,92,.18);
  --space-section:80px;
  --font: "PingFang SC","Microsoft YaHei","Noto Sans SC",system-ui,-apple-system,"Segoe UI",Roboto,sans-serif;
}
*,*::before,*::after{box-sizing:border-box;}
html{-webkit-text-size-adjust:100%;scroll-behavior:smooth;}
body{
  margin:0;
  font-family:var(--font);
  font-size:16px;
  line-height:1.85;
  color:var(--text);
  background:var(--bg);
  -webkit-font-smoothing:antialiased;
}
img{max-width:100%;display:block;border:0;}
a{color:inherit;text-decoration:none;}
ul,ol{margin:0;padding:0;list-style:none;}
h1,h2,h3,h4,p{margin:0;}
button{font:inherit;color:inherit;border:0;background:none;cursor:pointer;}
input{font:inherit;}
:focus-visible{outline:3px solid var(--primary);outline-offset:2px;box-shadow:0 0 0 2px #fff inset;}
.container{
  width:100%;
  max-width:1200px;
  margin:0 auto;
  padding:0 24px;
}
.section{padding:var(--space-section) 0;}
.section-alt{background:var(--bg-alt);}
.section-head{max-width:760px;margin-bottom:32px;}
.section-head h2{
  font-size:30px;
  line-height:1.3;
  font-weight:700;
  color:var(--text);
}
.section-head p{
  margin-top:12px;
  font-size:15px;
  line-height:1.85;
  color:var(--text-2);
}
.eyebrow{
  display:inline-flex;
  align-items:center;
  gap:8px;
  padding:6px 14px;
  border-radius:var(--radius-pill);
  background:var(--primary-light);
  color:var(--primary);
  font-size:12px;
  font-weight:600;
  letter-spacing:0;
}
.eyebrow .dot{width:6px;height:6px;border-radius:50%;background:var(--accent);}

/* ---------- 顶部信息条 ---------- */
.topbar{
  background:var(--primary-dark);
  color:#fff;
  font-size:12px;
  line-height:36px;
  height:36px;
}
.topbar-inner{
  display:flex;
  align-items:center;
  justify-content:space-between;
  gap:16px;
  height:36px;
}
.topbar-domain{color:#fff;font-weight:600;white-space:nowrap;}
.topbar-domain:hover{text-decoration:underline;}
.topbar-note{
  color:#D7E2F0;
  overflow:hidden;
  white-space:nowrap;
  text-overflow:ellipsis;
}
.topbar-links{display:flex;align-items:center;gap:20px;white-space:nowrap;}
.topbar-links a{color:#D7E2F0;transition:color .18s ease;}
.topbar-links a:hover{color:#fff;text-decoration:underline;}

/* ---------- 主导航 ---------- */
.mainnav{
  position:sticky;
  top:0;
  z-index:60;
  background:#fff;
  border-bottom:1px solid var(--border);
  transition:box-shadow .2s ease;
}
.mainnav.is-scrolled{box-shadow:0 6px 20px rgba(23,54,92,.08);}
.mainnav-inner{
  display:flex;
  align-items:center;
  justify-content:space-between;
  gap:24px;
  height:68px;
}
.brand{display:flex;align-items:center;gap:10px;flex-shrink:0;}
.brand-mark{
  width:32px;height:32px;
  border-radius:9px;
  background:var(--primary);
  color:#fff;
  font-size:16px;
  font-weight:700;
  display:grid;
  place-items:center;
  flex-shrink:0;
}
.brand-text{
  display:flex;
  flex-direction:column;
  font-size:16px;
  font-weight:700;
  line-height:1.2;
  color:var(--text);
}
.brand-text small{
  font-size:12px;
  font-weight:400;
  color:var(--text-3);
  margin-top:3px;
}
.nav-list{display:flex;align-items:center;gap:26px;}
.nav-list a{
  position:relative;
  display:inline-block;
  padding:6px 0;
  font-size:15px;
  color:var(--text);
  transition:color .18s ease;
}
.nav-list a::after{
  content:"";
  position:absolute;
  left:50%;
  bottom:0;
  width:0;
  height:2px;
  background:var(--primary);
  transform:translateX(-50%);
  transition:width .18s ease;
}
.nav-list a:hover{color:var(--primary);}
.nav-list a:hover::after{width:100%;}
.nav-list a.is-active{color:var(--primary);font-weight:600;}
.nav-list a.is-active::after{width:100%;}
.nav-actions{display:flex;align-items:center;gap:12px;flex-shrink:0;}
.icon-btn{
  width:40px;height:40px;
  display:grid;place-items:center;
  border-radius:var(--radius-sm);
  border:1px solid var(--border);
  color:var(--primary);
  background:#fff;
  transition:background .18s ease,border-color .18s ease,transform .18s ease;
}
.icon-btn svg{width:18px;height:18px;}
.icon-btn:hover{background:var(--primary-light);border-color:var(--primary);}
.icon-btn:active{transform:translateY(1px);}
.burger{
  display:none;
  width:44px;height:44px;
  flex-direction:column;
  align-items:center;
  justify-content:center;
  gap:5px;
  border-radius:var(--radius-sm);
  border:1px solid var(--border);
}
.burger span{display:block;width:20px;height:2px;background:var(--text);border-radius:2px;transition:transform .2s ease,opacity .2s ease;}
.burger[aria-expanded="true"] span:nth-child(1){transform:translateY(7px) rotate(45deg);}
.burger[aria-expanded="true"] span:nth-child(2){opacity:0;}
.burger[aria-expanded="true"] span:nth-child(3){transform:translateY(-7px) rotate(-45deg);}

/* ---------- 按钮 ---------- */
.btn{
  display:inline-flex;
  align-items:center;
  justify-content:center;
  gap:8px;
  height:44px;
  padding:0 22px;
  border-radius:var(--radius-pill);
  font-size:15px;
  font-weight:600;
  line-height:1;
  text-align:center;
  transition:background .2s ease,color .2s ease,border-color .2s ease,transform .2s ease,box-shadow .2s ease;
}
.btn-sm{height:40px;padding:0 18px;font-size:14px;}
.btn-primary{background:var(--primary);color:#fff;box-shadow:0 4px 14px rgba(29,78,137,.18);}
.btn-primary:hover{background:var(--primary-dark);transform:translateY(-2px);}
.btn-primary:active{transform:translateY(0);box-shadow:none;}
.btn-ghost{
  border:1px solid var(--primary);
  color:var(--primary);
  background:#fff;
  border-radius:var(--radius-sm);
}
.btn-ghost:hover{background:var(--primary-light);border-color:var(--primary-dark);color:var(--primary-dark);}
.btn-accent{
  background:var(--accent);
  color:#fff;
  height:52px;
  padding:0 32px;
  font-size:16px;
  box-shadow:0 8px 22px rgba(18,165,148,.24);
}
.btn-accent:hover{background:var(--accent-dark);transform:translateY(-2px);}
.btn-accent:active{transform:translateY(0);box-shadow:none;}

/* ---------- 搜索面板 ---------- */
.search-panel{display:none;border-top:1px solid var(--border);background:#fff;padding:14px 0 16px;}
.search-panel.is-open{display:block;}
.search-form{display:flex;gap:12px;align-items:center;}
.search-form input{
  flex:1;
  height:44px;
  border-radius:var(--radius-sm);
  border:1px solid var(--border);
  padding:0 14px;
  font-size:14px;
  color:var(--text);
  background:var(--bg-alt);
  transition:border-color .18s ease,box-shadow .18s ease,background .18s ease;
}
.search-form input::placeholder{color:var(--text-3);}
.search-form input:focus{
  outline:none;
  background:#fff;
  border-color:var(--primary);
  box-shadow:0 0 0 3px rgba(29,78,137,.14);
}

/* ---------- 分类头 ---------- */
.page-hero{
  position:relative;
  overflow:hidden;
  background:var(--bg-alt);
  padding:72px 0 64px;
  border-bottom:1px solid var(--border);
}
.page-hero::before{
  content:"";
  position:absolute;
  inset:0;
  background-image:url(/assets/images/backpic/back-1.webp);
  background-size:cover;
  background-position:center;
  opacity:.07;
  pointer-events:none;
}
.phero-grid{
  position:relative;
  display:grid;
  grid-template-columns:1.15fr .85fr;
  gap:48px;
  align-items:center;
}
.crumb{
  display:flex;
  flex-wrap:wrap;
  align-items:center;
  gap:8px;
  font-size:13px;
  color:var(--text-3);
  margin-bottom:18px;
}
.crumb a{color:var(--text-2);transition:color .18s ease;}
.crumb a:hover{color:var(--primary);text-decoration:underline;}
.crumb .sep{color:var(--text-3);}
.crumb .current{color:var(--text);}
.page-hero h1{
  font-size:clamp(30px,4.2vw,44px);
  line-height:1.25;
  font-weight:700;
  color:var(--text);
  letter-spacing:0;
  margin-top:16px;
}
.page-hero .lead{
  margin-top:18px;
  font-size:16px;
  line-height:1.85;
  color:var(--text-2);
  max-width:560px;
}
.hero-actions{display:flex;flex-wrap:wrap;gap:14px;margin-top:28px;}
.hero-facts{
  display:flex;
  flex-wrap:wrap;
  align-items:center;
  gap:14px;
  margin-top:26px;
  font-size:14px;
  color:var(--text-2);
}
.hero-facts .fact{display:inline-flex;align-items:center;gap:8px;}
.hero-facts .bar{width:1px;height:14px;background:var(--border);}
.hero-facts strong{color:var(--primary);font-weight:700;}
.hero-figure{
  position:relative;
  display:flex;
  justify-content:center;
}
.hero-figure img{
  width:100%;
  max-width:360px;
  aspect-ratio:4/3;
  object-fit:cover;
  border-radius:var(--radius-vcard);
  box-shadow:var(--shadow-2);
  border:1px solid var(--border);
}
.hero-figure .float-tag{
  position:absolute;
  left:50%;
  bottom:-16px;
  transform:translateX(-50%);
  background:#fff;
  border:1px solid var(--border);
  border-radius:var(--radius-pill);
  box-shadow:var(--shadow-1);
  padding:8px 16px;
  font-size:13px;
  font-weight:600;
  color:var(--primary);
  white-space:nowrap;
}

/* ---------- 步骤时间轴 ---------- */
.steps{margin-top:8px;}
.step{
  display:grid;
  grid-template-columns:56px minmax(0,1fr);
  gap:22px;
}
.step-marker{display:flex;flex-direction:column;align-items:center;}
.step-num{
  width:48px;height:48px;
  border-radius:14px;
  background:var(--primary-light);
  color:var(--primary);
  font-size:17px;
  font-weight:700;
  display:grid;
  place-items:center;
  border:1px solid rgba(29,78,137,.16);
  flex-shrink:0;
}
.step-line{
  flex:1;
  width:2px;
  background:var(--border);
  margin:10px 0 0;
  border-radius:2px;
}
.step:last-child .step-line{display:none;}
.step-card{
  display:grid;
  grid-template-columns:minmax(0,1fr) 220px;
  gap:24px;
  align-items:center;
  background:#fff;
  border:1px solid var(--border);
  border-radius:var(--radius-card);
  box-shadow:var(--shadow-1);
  padding:24px;
  margin-bottom:28px;
  transition:transform .2s ease,box-shadow .2s ease;
}
.step-card:hover{transform:translateY(-4px);box-shadow:var(--shadow-2);}
.step-card h3{
  font-size:19px;
  font-weight:600;
  line-height:1.5;
  color:var(--text);
}
.step-card p{
  margin-top:10px;
  font-size:15px;
  line-height:1.85;
  color:var(--text-2);
}
.step-tags{display:flex;flex-wrap:wrap;gap:8px;margin-top:16px;}
.tag{
  display:inline-block;
  padding:4px 12px;
  border-radius:var(--radius-pill);
  background:var(--primary-light);
  color:var(--primary);
  font-size:12px;
  font-weight:600;
  line-height:1.6;
}
.tag-warm{background:#FDF0E6;color:#B85E1E;}
.tag-accent{background:#E3F6F3;color:#0E8B7D;}
.step-card img{
  width:100%;
  aspect-ratio:4/3;
  object-fit:cover;
  border-radius:var(--radius-img);
  border:1px solid var(--border);
}

/* ---------- 准备工作 ---------- */
.prep-grid{
  display:grid;
  grid-template-columns:repeat(2,minmax(0,1fr));
  gap:20px;
  margin-top:8px;
}
.prep-card{
  display:flex;
  gap:16px;
  align-items:flex-start;
  background:#fff;
  border:1px solid var(--border);
  border-radius:var(--radius-card);
  padding:22px 24px;
  box-shadow:var(--shadow-1);
  transition:transform .2s ease,box-shadow .2s ease,border-color .2s ease;
}
.prep-card:hover{transform:translateY(-4px);box-shadow:var(--shadow-2);border-color:#CFDEEE;}
.prep-icon{
  width:44px;height:44px;
  border-radius:12px;
  background:var(--primary-light);
  color:var(--primary);
  display:grid;
  place-items:center;
  font-size:15px;
  font-weight:700;
  flex-shrink:0;
}
.prep-card h3{font-size:17px;font-weight:600;line-height:1.5;}
.prep-card p{margin-top:6px;font-size:14px;line-height:1.8;color:var(--text-2);}

/* ---------- 常见卡点 ---------- */
.pit-grid{
  display:grid;
  grid-template-columns:repeat(3,minmax(0,1fr));
  gap:24px;
  margin-top:8px;
}
.pit-card{
  background:#fff;
  border:1px solid var(--border);
  border-radius:var(--radius-card);
  padding:26px 24px;
  box-shadow:var(--shadow-1);
  transition:transform .2s ease,box-shadow .2s ease;
}
.pit-card:hover{transform:translateY(-4px);box-shadow:var(--shadow-2);}
.pit-card .idx{
  display:inline-block;
  font-size:12px;
  font-weight:700;
  color:var(--warm);
  background:#FDF0E6;
  border-radius:var(--radius-pill);
  padding:4px 12px;
  margin-bottom:14px;
}
.pit-card h3{font-size:18px;font-weight:600;line-height:1.5;}
.pit-card p{margin-top:10px;font-size:15px;line-height:1.85;color:var(--text-2);}

/* ---------- FAQ ---------- */
.faq-list{margin-top:8px;}
.faq-item{
  background:#fff;
  border:1px solid var(--border);
  border-radius:14px;
  margin-bottom:12px;
  overflow:hidden;
  transition:border-color .2s ease,box-shadow .2s ease;
}
.faq-item:hover{border-color:#CFDEEE;}
.faq-item.is-open{border-color:var(--primary);box-shadow:var(--shadow-1);}
.faq-q{
  width:100%;
  display:flex;
  align-items:center;
  justify-content:space-between;
  gap:16px;
  padding:18px 22px;
  text-align:left;
  font-size:16px;
  font-weight:600;
  color:var(--text);
  line-height:1.6;
}
.faq-q .plus{
  position:relative;
  width:18px;height:18px;
  flex-shrink:0;
  transition:transform .22s ease;
}
.faq-q .plus::before,
.faq-q .plus::after{
  content:"";
  position:absolute;
  background:var(--text-2);
  border-radius:2px;
  transition:background .22s ease;
}
.faq-q .plus::before{left:0;top:8px;width:18px;height:2px;}
.faq-q .plus::after{left:8px;top:0;width:2px;height:18px;}
.faq-item.is-open .faq-q{color:var(--primary);}
.faq-item.is-open .plus{transform:rotate(45deg);}
.faq-item.is-open .plus::before,
.faq-item.is-open .plus::after{background:var(--primary);}
.faq-a{
  max-height:0;
  overflow:hidden;
  transition:max-height .28s ease,padding .28s ease;
  padding:0 22px;
}
.faq-item.is-open .faq-a{max-height:420px;padding:0 22px 20px;}
.faq-a p{
  font-size:15px;
  line-height:1.85;
  color:var(--text-2);
  border-left:3px solid var(--primary);
  padding-left:14px;
}

/* ---------- CTA 带 ---------- */
.cta-band{
  background:var(--primary-light);
  border-radius:var(--radius-vcard);
  padding:48px;
  display:flex;
  align-items:center;
  justify-content:space-between;
  gap:32px;
  border:1px solid #D6E4F5;
}
.cta-band h2{
  font-size:26px;
  line-height:1.35;
  font-weight:700;
  color:var(--primary-dark);
}
.cta-band p{
  margin-top:10px;
  font-size:15px;
  line-height:1.85;
  color:var(--text-2);
  max-width:520px;
}
.cta-band .btn-accent{flex-shrink:0;}

/* ---------- 页脚 ---------- */
.site-footer{
  background:var(--primary-dark);
  color:#D7E2F0;
  padding:64px 0 28px;
  margin-top:0;
}
.footer-grid{
  display:grid;
  grid-template-columns:1.5fr 1fr 1fr 1fr;
  gap:40px;
}
.footer-brand{display:flex;align-items:center;gap:10px;color:#fff;}
.footer-brand .brand-mark{background:rgba(255,255,255,.16);color:#fff;}
.footer-brand .brand-text{color:#fff;}
.footer-brand .brand-text small{color:#9FB6D2;}
.footer-desc{
  margin-top:16px;
  font-size:14px;
  line-height:1.85;
  color:#B9CBE0;
  max-width:340px;
}
.footer-tags{margin-top:16px;}
.footer-tags span{
  display:inline-block;
  padding:4px 12px;
  border:1px solid rgba(255,255,255,.22);
  border-radius:var(--radius-pill);
  font-size:12px;
  color:#D7E2F0;
  margin:0 8px 8px 0;
}
.footer-col h4{
  font-size:15px;
  font-weight:600;
  color:#fff;
  margin-bottom:16px;
}
.footer-col li{margin-bottom:2px;}
.footer-col a{
  display:inline-block;
  font-size:14px;
  line-height:2;
  color:#C6D6E8;
  transition:color .18s ease,transform .18s ease;
}
.footer-col a:hover{color:var(--accent);}
.footer-divider{height:1px;background:rgba(255,255,255,.12);margin:28px 0;}
.footer-keywords{
  font-size:12px;
  color:#9FB6D2;
  line-height:1.9;
}
.footer-bottom{
  display:flex;
  flex-wrap:wrap;
  align-items:center;
  justify-content:space-between;
  gap:14px;
  font-size:12px;
  color:#9FB6D2;
}
.to-top{
  display:inline-flex;
  align-items:center;
  gap:6px;
  color:#D7E2F0;
  transition:color .18s ease;
}
.to-top:hover{color:var(--accent);}

/* ---------- 响应式 ---------- */
@media (max-width:1199px){
  .container{padding:0 20px;}
  .phero-grid{gap:36px;}
}
@media (max-width:1023px){
  :root{--space-section:64px;}
  .nav-list{
    display:none;
    position:absolute;
    left:0;right:0;top:100%;
    flex-direction:column;
    align-items:stretch;
    gap:0;
    background:#fff;
    border-bottom:1px solid var(--border);
    box-shadow:var(--shadow-3);
    padding:6px 0 10px;
  }
  .nav-list.is-open{display:flex;}
  .nav-list a{
    display:block;
    padding:0 24px;
    line-height:48px;
    border-left:3px solid transparent;
  }
  .nav-list a::after{display:none;}
  .nav-list a.is-active{
    border-left-color:var(--primary);
    background:var(--primary-light);
    color:var(--primary);
  }
  .burger{display:flex;}
  .nav-cta{display:none;}
  .phero-grid{grid-template-columns:1fr;gap:40px;}
  .hero-figure{justify-content:flex-start;}
  .hero-figure img{max-width:100%;}
  .hero-figure .float-tag{left:auto;right:16px;transform:none;}
  .pit-grid{grid-template-columns:1fr 1fr;}
  .footer-grid{grid-template-columns:1fr 1fr;gap:32px;}
  .cta-band{flex-direction:column;align-items:flex-start;padding:40px;}
  .step-card{grid-template-columns:minmax(0,1fr) 180px;gap:20px;}
}
@media (max-width:767px){
  :root{--space-section:48px;}
  .container{padding:0 16px;}
  .topbar-note{display:none;}
  .topbar-links{gap:14px;}
  .mainnav-inner{height:62px;gap:12px;}
  .brand-text small{display:none;}
  .brand-text{font-size:15px;}
  .icon-btn{display:none;}
  .page-hero{padding:48px 0 44px;}
  .page-hero .lead{font-size:15px;}
  .hero-actions .btn{width:100%;}
  .hero-facts{gap:10px;font-size:13px;}
  .hero-facts .bar{display:none;}
  .step{grid-template-columns:40px minmax(0,1fr);gap:14px;}
  .step-num{width:38px;height:38px;font-size:15px;border-radius:11px;}
  .step-card{grid-template-columns:1fr;padding:18px;margin-bottom:20px;}
  .step-card img{order:-1;aspect-ratio:16/9;}
  .step-card h3{font-size:17px;}
  .prep-grid{grid-template-columns:1fr;}
  .pit-grid{grid-template-columns:1fr;}
  .faq-q{padding:16px;font-size:15px;}
  .faq-item.is-open .faq-a{padding:0 16px 16px;}
  .faq-a p{padding-left:12px;}
  .cta-band{padding:28px 20px;border-radius:16px;}
  .cta-band h2{font-size:22px;}
  .cta-band .btn-accent{width:100%;}
  .footer-grid{grid-template-columns:1fr;gap:28px;}
  .footer-desc{max-width:none;}
  .footer-bottom{flex-direction:column;align-items:flex-start;gap:10px;}
  .section-head h2{font-size:24px;}
  .search-form{flex-direction:column;align-items:stretch;}
  .search-form input{width:100%;}
  .search-form .btn{width:100%;}
}
@media (max-width:519px){
  .page-hero h1{font-size:26px;}
  .brand-text{font-size:14px;}
  .eyebrow{font-size:11px;}
  .to-top{align-self:flex-start;}
}
@media (prefers-reduced-motion:reduce){
  *{transition:none !important;animation:none !important;scroll-behavior:auto !important;}
}

/* roulang page: category4 */
:root{
  --brand:#1D4E89;
  --brand-dark:#163C6B;
  --brand-light:#E8F0FA;
  --accent:#12A594;
  --accent-dark:#0E8577;
  --warm:#F0873C;
  --text:#16202E;
  --text-2:#5A6B7F;
  --text-3:#94A3B5;
  --bg:#FFFFFF;
  --bg-alt:#F5F8FC;
  --border:#E3EAF3;
  --radius-card:16px;
  --radius-poster:20px;
  --radius-img:12px;
  --radius-pill:999px;
  --radius-input:10px;
  --shadow-1:0 4px 16px rgba(23,54,92,.08);
  --shadow-2:0 10px 28px rgba(23,54,92,.14);
  --shadow-3:0 16px 40px rgba(23,54,92,.18);
  --font:"PingFang SC","Microsoft YaHei","Noto Sans SC",system-ui,-apple-system,"Segoe UI",Roboto,sans-serif;
  --sec-pad:80px;
}
*,
*::before,
*::after{box-sizing:border-box;}
html{-webkit-text-size-adjust:100%;scroll-behavior:smooth;}
body{
  margin:0;
  font-family:var(--font);
  font-size:16px;
  line-height:1.85;
  color:var(--text);
  background:var(--bg);
  -webkit-font-smoothing:antialiased;
}
img{max-width:100%;display:block;border:0;}
a{color:var(--brand);text-decoration:none;transition:color .18s ease;}
a:hover{color:var(--brand-dark);}
p{margin:0 0 1.05em;}
p:last-child{margin-bottom:0;}
h1,h2,h3,h4{margin:0;font-weight:700;letter-spacing:0;line-height:1.3;color:var(--text);}
h1{font-size:clamp(30px,4.2vw,46px);line-height:1.25;}
h2{font-size:clamp(24px,2.6vw,30px);}
h3{font-size:19px;font-weight:600;line-height:1.5;}
h4{font-size:16px;}
ul,ol{margin:0;padding:0;list-style:none;}
button{font-family:inherit;}
:focus-visible{
  outline:none;
  box-shadow:0 0 0 2px #fff,0 0 0 5px var(--brand);
  border-radius:6px;
}
.container{
  width:100%;
  max-width:1200px;
  margin:0 auto;
  padding-left:24px;
  padding-right:24px;
}
.section{padding:var(--sec-pad) 0;}
.section-alt{background:var(--bg-alt);}
.section-head{max-width:760px;margin-bottom:34px;}
.section-head h2{margin-bottom:12px;}
.section-head p{color:var(--text-2);font-size:15.5px;line-height:1.85;margin:0;}
.eyebrow{
  display:inline-flex;
  align-items:center;
  gap:8px;
  font-size:12px;
  font-weight:600;
  color:var(--brand);
  background:var(--brand-light);
  border-radius:var(--radius-pill);
  padding:6px 14px;
  margin-bottom:18px;
}
.eyebrow::before{
  content:"";
  width:6px;height:6px;border-radius:50%;
  background:var(--accent);
}

/* ---------- 顶部信息条 ---------- */
.topbar{
  background:var(--brand-dark);
  color:#fff;
  font-size:12px;
  line-height:36px;
  height:36px;
  overflow:hidden;
}
.topbar-inner{
  display:flex;
  align-items:center;
  justify-content:space-between;
  gap:16px;
  height:36px;
}
.topbar-domain{color:#fff;font-weight:600;letter-spacing:.2px;}
.topbar-domain:hover{color:#fff;text-decoration:underline;}
.topbar-tip{color:#C9D8EC;white-space:nowrap;overflow:hidden;text-overflow:ellipsis;}
.topbar-links{display:flex;gap:20px;white-space:nowrap;}
.topbar-links a{color:#D7E2F0;text-decoration:none;}
.topbar-links a:hover{color:#fff;text-decoration:underline;}

/* ---------- 主导航 ---------- */
.mainnav{
  position:sticky;
  top:0;
  z-index:80;
  background:#fff;
  border-bottom:1px solid var(--border);
  transition:box-shadow .2s ease;
}
.mainnav.is-scrolled{box-shadow:0 6px 20px rgba(23,54,92,.08);}
.mainnav-inner{
  display:flex;
  align-items:center;
  justify-content:space-between;
  gap:24px;
  min-height:68px;
}
.brand{display:flex;align-items:center;gap:10px;color:var(--text);}
.brand:hover{color:var(--text);}
.brand-mark{
  width:32px;height:32px;
  flex:0 0 32px;
  border-radius:10px;
  background:var(--brand);
  color:#fff;
  font-size:16px;
  font-weight:700;
  display:flex;
  align-items:center;
  justify-content:center;
}
.brand-text{
  font-size:15px;
  font-weight:700;
  line-height:1.2;
  display:flex;
  flex-direction:column;
}
.brand-text small{
  font-size:12px;
  font-weight:400;
  color:var(--text-3);
  margin-top:3px;
}
.nav-list{display:flex;align-items:center;gap:26px;}
.nav-list a{
  position:relative;
  display:inline-block;
  font-size:16px;
  color:var(--text);
  padding:6px 0;
}
.nav-list a::after{
  content:"";
  position:absolute;
  left:50%;
  bottom:0;
  width:0;
  height:2px;
  background:var(--brand);
  transform:translateX(-50%);
  transition:width .18s ease;
}
.nav-list a:hover{color:var(--brand);}
.nav-list a:hover::after{width:100%;}
.nav-list a.is-active{color:var(--brand);font-weight:600;}
.nav-list a.is-active::after{width:100%;}
.nav-actions{display:flex;align-items:center;gap:10px;}
.icon-btn{
  width:40px;height:40px;
  border-radius:50%;
  border:1px solid var(--border);
  background:#fff;
  color:var(--text-2);
  display:flex;
  align-items:center;
  justify-content:center;
  cursor:pointer;
  transition:all .2s ease;
}
.icon-btn svg{width:18px;height:18px;}
.icon-btn:hover{color:var(--brand);border-color:var(--brand);background:var(--brand-light);}
.icon-btn:active{transform:translateY(1px);}
.btn{
  display:inline-flex;
  align-items:center;
  justify-content:center;
  gap:8px;
  min-height:44px;
  padding:0 24px;
  font-size:15px;
  font-weight:600;
  border-radius:var(--radius-pill);
  border:1px solid transparent;
  cursor:pointer;
  transition:all .2s ease;
  text-align:center;
}
.btn-sm{min-height:40px;padding:0 18px;font-size:14px;}
.btn-primary{background:var(--brand);color:#fff;box-shadow:var(--shadow-1);}
.btn-primary:hover{background:var(--brand-dark);color:#fff;transform:translateY(-2px);box-shadow:var(--shadow-2);}
.btn-primary:active{transform:translateY(0);box-shadow:var(--shadow-1);}
.btn-ghost{background:#fff;color:var(--brand);border-color:var(--border);}
.btn-ghost:hover{background:var(--brand-light);border-color:var(--brand);color:var(--brand-dark);transform:translateY(-2px);}
.btn-ghost:active{transform:translateY(0);}
.btn-accent{background:var(--accent);color:#fff;font-size:16px;min-height:52px;padding:0 34px;box-shadow:var(--shadow-1);}
.btn-accent:hover{background:var(--accent-dark);color:#fff;transform:translateY(-2px);box-shadow:var(--shadow-2);}
.btn-accent:active{transform:translateY(0);}
.burger{
  display:none;
  width:44px;height:44px;
  border:1px solid var(--border);
  border-radius:12px;
  background:#fff;
  cursor:pointer;
  padding:0;
  flex-direction:column;
  align-items:center;
  justify-content:center;
  gap:4px;
}
.burger span{display:block;width:18px;height:2px;background:var(--brand);border-radius:2px;transition:.2s;}
.burger[aria-expanded="true"] span:nth-child(1){transform:translateY(6px) rotate(45deg);}
.burger[aria-expanded="true"] span:nth-child(2){opacity:0;}
.burger[aria-expanded="true"] span:nth-child(3){transform:translateY(-6px) rotate(-45deg);}
.search-panel{
  display:none;
  border-top:1px solid var(--border);
  background:var(--bg-alt);
  padding:14px 0;
}
.search-panel.is-open{display:block;}
.search-form{display:flex;gap:12px;align-items:center;}
.search-form input{
  flex:1;
  height:44px;
  border-radius:var(--radius-input);
  border:1px solid var(--border);
  padding:0 16px;
  font-size:15px;
  color:var(--text);
  background:#fff;
}
.search-form input::placeholder{color:var(--text-3);}
.search-form input:focus{outline:none;border-color:var(--brand);box-shadow:0 0 0 4px rgba(29,78,137,.12);}

/* ---------- 分类头 Hero ---------- */
.hero-cat{
  position:relative;
  padding:72px 0 64px;
  background:var(--bg);
  overflow:hidden;
}
.hero-cat::before{
  content:"";
  position:absolute;
  inset:0;
  background:url('/assets/images/backpic/back-1.webp') center/cover no-repeat;
  opacity:.07;
  pointer-events:none;
}
.hero-cat > .container{position:relative;z-index:1;}
.hero-cat h1{margin-bottom:20px;}
.hero-lead{
  font-size:16px;
  color:var(--text-2);
  line-height:1.9;
  max-width:620px;
  margin-bottom:28px;
}
.hero-actions{display:flex;flex-wrap:wrap;gap:14px;margin-bottom:28px;}
.hero-facts{
  display:flex;
  flex-wrap:wrap;
  align-items:center;
  gap:14px;
  font-size:14px;
  color:var(--text-2);
}
.hero-facts i{display:block;width:1px;height:14px;background:var(--border);}
.cat-figure{
  position:relative;
  margin:0;
  border-radius:var(--radius-poster);
  overflow:hidden;
  box-shadow:var(--shadow-1);
  background:var(--bg-alt);
  max-width:420px;
}
.cat-figure img{width:100%;height:320px;object-fit:cover;}
.cat-figure figcaption{
  position:absolute;
  left:0;right:0;bottom:0;
  padding:26px 20px 16px;
  font-size:13px;
  color:#fff;
  background:linear-gradient(to top,rgba(15,32,51,.82),rgba(15,32,51,0));
}

/* ---------- 速览卡 ---------- */
.glance-grid{margin-top:-4px;}
.glance-card{
  background:#fff;
  border:1px solid var(--border);
  border-radius:var(--radius-card);
  padding:24px;
  height:100%;
  box-shadow:var(--shadow-1);
  transition:transform .2s ease,box-shadow .2s ease,border-color .2s ease;
}
.glance-card:hover{transform:translateY(-4px);box-shadow:var(--shadow-2);border-color:#CFDEEC;}
.glance-num{
  font-size:34px;
  font-weight:700;
  color:var(--brand);
  line-height:1;
  margin-bottom:12px;
  display:flex;
  align-items:baseline;
  gap:6px;
}
.glance-num small{font-size:13px;font-weight:500;color:var(--text-3);}
.glance-card h3{font-size:17px;margin-bottom:8px;}
.glance-card p{font-size:14px;color:var(--text-2);line-height:1.8;margin:0;}

/* ---------- FAQ ---------- */
.faq-wrap{max-width:880px;margin:0 auto;}
.faq-item{
  background:#fff;
  border:1px solid var(--border);
  border-left:3px solid transparent;
  border-radius:14px;
  margin-bottom:12px;
  transition:border-color .2s ease,box-shadow .2s ease;
}
.faq-item:hover{box-shadow:var(--shadow-1);}
.faq-item.is-open{border-left-color:var(--brand);box-shadow:var(--shadow-1);}
.faq-q{
  width:100%;
  display:flex;
  align-items:flex-start;
  justify-content:space-between;
  gap:16px;
  padding:18px 22px;
  background:transparent;
  border:0;
  text-align:left;
  font-size:16px;
  font-weight:600;
  color:var(--text);
  line-height:1.6;
  cursor:pointer;
  border-radius:14px;
}
.faq-q:hover{color:var(--brand);}
.faq-sign{
  flex:0 0 22px;
  width:22px;height:22px;
  margin-top:2px;
  position:relative;
  color:var(--text-3);
  transition:transform .22s ease,color .22s ease;
}
.faq-sign::before,
.faq-sign::after{
  content:"";
  position:absolute;
  left:50%;top:50%;
  background:currentColor;
  border-radius:2px;
  transform:translate(-50%,-50%);
}
.faq-sign::before{width:14px;height:2px;}
.faq-sign::after{width:2px;height:14px;}
.faq-item.is-open .faq-sign{transform:rotate(45deg);color:var(--brand);}
.faq-a{
  max-height:0;
  overflow:hidden;
  transition:max-height .3s ease;
}
.faq-item.is-open .faq-a{max-height:520px;}
.faq-a-inner{
  padding:0 22px 20px;
  font-size:15px;
  color:var(--text-2);
  line-height:1.85;
}

/* ---------- 排查步骤 ---------- */
.steps{max-width:880px;margin:0 auto;position:relative;}
.step{
  position:relative;
  display:flex;
  gap:20px;
  padding-bottom:26px;
}
.step:last-child{padding-bottom:0;}
.step::before{
  content:"";
  position:absolute;
  left:17px;
  top:44px;
  bottom:0;
  width:2px;
  background:var(--border);
}
.step:last-child::before{display:none;}
.step-num{
  flex:0 0 36px;
  width:36px;height:36px;
  border-radius:50%;
  background:var(--brand-light);
  color:var(--brand);
  font-weight:700;
  font-size:14px;
  display:flex;
  align-items:center;
  justify-content:center;
  position:relative;
  z-index:1;
}
.step-body{
  flex:1;
  background:#fff;
  border:1px solid var(--border);
  border-radius:14px;
  padding:18px 22px;
  box-shadow:var(--shadow-1);
  transition:transform .2s ease,box-shadow .2s ease;
}
.step-body:hover{transform:translateY(-3px);box-shadow:var(--shadow-2);}
.step-body h3{font-size:17px;margin-bottom:6px;}
.step-body p{font-size:14.5px;color:var(--text-2);margin:0;line-height:1.8;}

/* ---------- CTA ---------- */
.cta-band{
  background:var(--brand-light);
  border-radius:var(--radius-poster);
  padding:48px;
  display:flex;
  align-items:center;
  justify-content:space-between;
  gap:32px;
  flex-wrap:wrap;
}
.cta-band h2{font-size:clamp(22px,2.4vw,26px);margin-bottom:10px;color:var(--brand-dark);}
.cta-band p{font-size:15px;color:var(--text-2);margin:0;max-width:560px;line-height:1.85;}
.cta-band .cta-action{flex:0 0 auto;}

/* ---------- 页脚 ---------- */
.site-footer{
  background:var(--brand-dark);
  color:#D7E2F0;
  padding:64px 0 28px;
  margin-top:0;
}
.footer-grid{
  display:grid;
  grid-template-columns:1.6fr 1fr 1fr 1fr;
  gap:40px;
}
.footer-brand{display:flex;align-items:center;gap:10px;color:#fff;margin-bottom:16px;}
.footer-brand:hover{color:#fff;}
.footer-brand .brand-mark{background:#fff;color:var(--brand-dark);}
.footer-brand .brand-text small{color:#9FB6D2;}
.footer-desc{font-size:14px;line-height:1.85;color:#B9CBE2;margin-bottom:18px;max-width:340px;}
.footer-tags{display:flex;flex-wrap:wrap;gap:8px;}
.footer-tags span{
  font-size:12px;
  padding:5px 12px;
  border-radius:var(--radius-pill);
  background:rgba(255,255,255,.1);
  color:#D7E2F0;
}
.footer-col h4{font-size:14px;color:#fff;margin-bottom:16px;font-weight:600;}
.footer-col ul{display:flex;flex-direction:column;gap:10px;}
.footer-col a{font-size:14px;color:#B9CBE2;}
.footer-col a:hover{color:var(--accent);}
.footer-divider{height:1px;background:rgba(255,255,255,.12);margin:32px 0 20px;}
.footer-keywords{font-size:12px;color:rgba(215,226,240,.7);line-height:1.9;}
.footer-bottom{
  display:flex;
  flex-wrap:wrap;
  align-items:center;
  justify-content:space-between;
  gap:12px;
  font-size:12px;
  color:rgba(215,226,240,.7);
}
.to-top{color:#D7E2F0;font-size:12px;}
.to-top:hover{color:var(--accent);}

/* ---------- 响应式 ---------- */
@media (max-width:1199px){
  .nav-list{gap:20px;}
}
@media (max-width:1023px){
  :root{--sec-pad:64px;}
  .hero-cat{padding:56px 0 48px;}
  .cat-figure{max-width:100%;margin-top:32px;}
  .cat-figure img{height:260px;}
  .footer-grid{grid-template-columns:1fr 1fr;gap:32px;}
  .cta-band{padding:36px;}
}
@media (max-width:767px){
  :root{--sec-pad:48px;}
  .container{padding-left:16px;padding-right:16px;}
  .topbar-tip{display:none;}
  .nav-list{
    position:fixed;
    top:104px;
    left:0;right:0;
    flex-direction:column;
    align-items:stretch;
    gap:0;
    background:#fff;
    padding:8px 0 16px;
    box-shadow:var(--shadow-2);
    transform:translateY(-10px);
    opacity:0;
    visibility:hidden;
    transition:opacity .2s ease,transform .2s ease,visibility .2s;
    max-height:calc(100vh - 140px);
    overflow-y:auto;
    z-index:90;
  }
  .nav-list.is-open{transform:none;opacity:1;visibility:visible;}
  .nav-list a{
    display:flex;
    align-items:center;
    min-height:48px;
    padding:0 20px;
    border-left:3px solid transparent;
    font-size:16px;
  }
  .nav-list a::after{display:none;}
  .nav-list a.is-active{border-left-color:var(--brand);background:var(--brand-light);}
  .burger{display:flex;}
  .mainnav-inner{min-height:64px;gap:12px;}
  .hero-cat{padding:44px 0 40px;}
  .hero-lead{font-size:15px;}
  .hero-actions{gap:12px;}
  .hero-actions .btn{width:100%;}
  .cat-figure img{height:220px;}
  .search-form{flex-direction:column;align-items:stretch;}
  .search-form .btn{width:100%;}
  .faq-q{padding:16px 16px;font-size:15.5px;}
  .faq-a-inner{padding:0 16px 16px;}
  .glance-card{padding:20px;}
  .step-body{padding:16px;}
  .cta-band{padding:28px 22px;border-radius:16px;}
  .cta-band .cta-action,.cta-band .cta-action .btn{width:100%;}
  .footer-grid{grid-template-columns:1fr;gap:26px;}
  .footer-bottom{flex-direction:column;align-items:flex-start;}
  .section{padding:var(--sec-pad) 0;}
}
@media (max-width:520px){
  .nav-cta{display:none;}
  .brand-text{font-size:14px;}
  .brand-text small{font-size:11px;}
  .hero-facts{font-size:13px;gap:10px;}
  .glance-num{font-size:28px;}
  .faq-q{font-size:15px;}
}
@media (prefers-reduced-motion:reduce){
  *{animation:none !important;transition:none !important;scroll-behavior:auto !important;}
}

/* roulang page: category5 */
:root{
  --c-primary:#1D4E89;
  --c-primary-dark:#163C6B;
  --c-primary-soft:#E8F0FA;
  --c-accent:#12A594;
  --c-accent-dark:#0E8478;
  --c-warm:#F0873C;
  --c-ink:#16202E;
  --c-ink-2:#5A6B7F;
  --c-ink-3:#94A3B5;
  --c-bg:#FFFFFF;
  --c-bg-alt:#F5F8FC;
  --c-line:#E3EAF3;
  --c-white:#FFFFFF;
  --c-footer-text:#D7E2F0;
  --r-card:16px;
  --r-portrait:20px;
  --r-img:12px;
  --r-btn:999px;
  --r-btn-2:10px;
  --r-badge:999px;
  --sh-1:0 4px 16px rgba(23,54,92,0.08);
  --sh-2:0 10px 28px rgba(23,54,92,0.14);
  --sh-3:0 16px 40px rgba(23,54,92,0.18);
  --sp-section:80px;
  --font-sans:"PingFang SC","Microsoft YaHei","Noto Sans SC",system-ui,-apple-system,"Segoe UI",Roboto,sans-serif;
}
*,*::before,*::after{box-sizing:border-box;}
html{-webkit-text-size-adjust:100%;scroll-behavior:smooth;}
body{
  margin:0;
  font-family:var(--font-sans);
  font-size:16px;
  line-height:1.85;
  color:var(--c-ink);
  background:var(--c-bg);
  letter-spacing:0;
  -webkit-font-smoothing:antialiased;
}
img{max-width:100%;display:block;border:0;}
a{color:var(--c-primary);text-decoration:none;background-color:transparent;transition:color .18s ease;}
a:hover{color:var(--c-primary-dark);}
a:focus-visible,button:focus-visible,input:focus-visible,select:focus-visible{
  outline:3px solid var(--c-primary);
  outline-offset:2px;
  box-shadow:0 0 0 2px #FFFFFF;
}
button{font-family:inherit;cursor:pointer;border:0;background:none;color:inherit;}
h1,h2,h3,h4,h5,h6{margin:0;font-weight:700;letter-spacing:0;color:var(--c-ink);line-height:1.3;}
p{margin:0;}
ul,ol{margin:0;padding:0;list-style:none;}
.container{
  width:100%;
  max-width:1200px;
  margin:0 auto;
  padding-left:24px;
  padding-right:24px;
}
.section{padding-top:var(--sp-section);padding-bottom:var(--sp-section);}
.section-alt{background:var(--c-bg-alt);}
.section-head{margin-bottom:32px;}
.section-head h2{font-size:clamp(22px,2.6vw,30px);}
.section-head p{margin-top:12px;font-size:15px;color:var(--c-ink-2);line-height:1.85;max-width:760px;}
.eyebrow{
  display:inline-flex;align-items:center;gap:8px;
  padding:6px 14px;
  border-radius:var(--r-badge);
  background:var(--c-primary-soft);
  color:var(--c-primary);
  font-size:12px;
  font-weight:600;
  line-height:1.6;
}
.btn{
  display:inline-flex;align-items:center;justify-content:center;gap:8px;
  min-height:44px;
  padding:0 24px;
  border-radius:var(--r-btn);
  font-size:15px;
  font-weight:600;
  line-height:1;
  border:1px solid transparent;
  transition:transform .2s ease,background-color .2s ease,box-shadow .2s ease,color .2s ease,border-color .2s ease;
  text-align:center;
}
.btn-primary{background:var(--c-primary);color:var(--c-white);box-shadow:var(--sh-1);}
.btn-primary:hover,.btn-primary:active{background:var(--c-primary-dark);color:var(--c-white);transform:translateY(-2px);box-shadow:var(--sh-2);}
.btn-accent{background:var(--c-accent);color:#FFFFFF;box-shadow:var(--sh-1);}
.btn-accent:hover,.btn-accent:active{background:var(--c-accent-dark);color:#FFFFFF;transform:translateY(-2px);box-shadow:var(--sh-2);}
.btn-ghost{background:transparent;color:var(--c-primary);border-color:var(--c-line);border-radius:var(--r-btn-2);}
.btn-ghost:hover,.btn-ghost:active{background:var(--c-primary-soft);border-color:var(--c-primary);color:var(--c-primary-dark);}
.btn-sm{min-height:40px;padding:0 18px;font-size:14px;}
.btn-lg{min-height:52px;padding:0 32px;font-size:16px;}

/* ===== 顶部信息条 ===== */
.topbar{
  background:var(--c-primary-dark);
  color:var(--c-white);
  font-size:12px;
  line-height:36px;
}
.topbar-inner{
  display:flex;align-items:center;justify-content:space-between;gap:24px;
  height:36px;
}
.topbar-domain{color:#FFFFFF;font-weight:600;letter-spacing:.3px;}
.topbar-domain:hover{color:#FFFFFF;text-decoration:underline;}
.topbar-tip{color:#B9CCE4;}
.topbar-links{display:flex;align-items:center;gap:20px;}
.topbar-links a{color:#D7E2F0;}
.topbar-links a:hover{color:#FFFFFF;text-decoration:underline;}

/* ===== 主导航 ===== */
.mainnav{
  position:sticky;top:0;z-index:60;
  background:#FFFFFF;
  border-bottom:1px solid var(--c-line);
  transition:box-shadow .25s ease;
}
.mainnav.scrolled{box-shadow:0 6px 20px rgba(23,54,92,0.08);}
.mainnav-inner{
  display:flex;align-items:center;justify-content:space-between;gap:24px;
  height:68px;
}
.brand{display:flex;align-items:center;gap:10px;color:var(--c-ink);}
.brand:hover{color:var(--c-ink);}
.brand-mark{
  width:32px;height:32px;flex:0 0 32px;
  display:inline-flex;align-items:center;justify-content:center;
  border-radius:9px;
  background:var(--c-primary);
  color:#FFFFFF;
  font-size:16px;font-weight:700;
}
.brand-text{display:flex;flex-direction:column;line-height:1.25;font-size:15px;font-weight:700;}
.brand-text small{font-size:11px;color:var(--c-ink-3);font-weight:400;margin-top:2px;}
.nav-list{display:flex;align-items:center;gap:26px;}
.nav-list a{
  position:relative;
  display:inline-block;
  padding:8px 0;
  font-size:15px;
  color:var(--c-ink);
  transition:color .18s ease;
}
.nav-list a::after{
  content:"";position:absolute;left:50%;right:50%;bottom:0;height:2px;
  background:var(--c-primary);
  transition:left .18s ease,right .18s ease;
}
.nav-list a:hover{color:var(--c-primary);}
.nav-list a:hover::after{left:0;right:0;}
.nav-list a.is-active{color:var(--c-primary);font-weight:600;}
.nav-list a.is-active::after{left:0;right:0;}
.nav-actions{display:flex;align-items:center;gap:12px;}
.icon-btn{
  width:40px;height:40px;
  display:inline-flex;align-items:center;justify-content:center;
  border-radius:10px;
  border:1px solid var(--c-line);
  color:var(--c-ink-2);
  transition:background-color .2s ease,color .2s ease,border-color .2s ease;
}
.icon-btn svg{width:18px;height:18px;}
.icon-btn:hover{background:var(--c-primary-soft);color:var(--c-primary);border-color:var(--c-primary);}
.burger{
  display:none;
  width:44px;height:44px;
  border-radius:10px;
  border:1px solid var(--c-line);
  flex-direction:column;align-items:center;justify-content:center;gap:5px;
}
.burger span{display:block;width:20px;height:2px;background:var(--c-ink);border-radius:2px;transition:transform .2s ease,opacity .2s ease;}
.mainnav.menu-open .burger span:nth-child(1){transform:translateY(7px) rotate(45deg);}
.mainnav.menu-open .burger span:nth-child(2){opacity:0;}
.mainnav.menu-open .burger span:nth-child(3){transform:translateY(-7px) rotate(-45deg);}
.search-panel{
  display:none;
  border-top:1px solid var(--c-line);
  background:#FFFFFF;
  padding:16px 0;
  box-shadow:var(--sh-1);
}
.search-panel.is-open{display:block;}
.search-form{display:flex;gap:12px;align-items:center;}
.search-form input[type="search"]{
  flex:1 1 auto;
  height:44px;
  border-radius:10px;
  border:1px solid var(--c-line);
  padding:0 16px;
  font-size:15px;
  color:var(--c-ink);
  background:#FFFFFF;
}
.search-form input[type="search"]::placeholder{color:var(--c-ink-3);}
.search-form input[type="search"]:focus{
  border-color:var(--c-primary);
  box-shadow:0 0 0 3px rgba(29,78,137,0.14);
  outline:none;
}
.nav-scrim{
  position:fixed;inset:0;
  background:rgba(16,32,51,0.45);
  z-index:55;
  opacity:0;pointer-events:none;transition:opacity .2s ease;
}
.nav-scrim.show{opacity:1;pointer-events:auto;}

/* ===== 分类页头 ===== */
.page-hero{
  position:relative;
  padding-top:56px;
  padding-bottom:56px;
  background:var(--c-bg-alt);
  border-bottom:1px solid var(--c-line);
  overflow:hidden;
}
.page-hero::before{
  content:"";
  position:absolute;right:-60px;top:-40px;
  width:520px;height:420px;
  background-image:url("/assets/images/backpic/back-1.webp");
  background-size:cover;background-position:center;
  opacity:.07;
  border-radius:40px;
  pointer-events:none;
}
.page-hero-grid{
  position:relative;
  display:grid;
  grid-template-columns:1.25fr .75fr;
  gap:48px;
  align-items:center;
}
.breadcrumb{
  display:flex;align-items:center;gap:8px;
  font-size:13px;color:var(--c-ink-3);
  margin-bottom:20px;flex-wrap:wrap;
}
.breadcrumb a{color:var(--c-ink-2);}
.breadcrumb a:hover{color:var(--c-primary);}
.breadcrumb .sep{color:var(--c-ink-3);}
.breadcrumb .current{color:var(--c-ink);font-weight:600;}
.page-hero h1{
  font-size:clamp(28px,3.9vw,42px);
  line-height:1.28;
  margin-top:16px;
}
.page-hero h1 .hl{color:var(--c-primary);}
.page-hero .lede{
  margin-top:18px;
  font-size:16px;
  line-height:1.85;
  color:var(--c-ink-2);
  max-width:640px;
}
.hero-facts{
  display:flex;flex-wrap:wrap;align-items:center;gap:14px;
  margin-top:26px;
  font-size:14px;color:var(--c-ink-2);
}
.hero-facts .fact{display:flex;align-items:center;gap:8px;}
.hero-facts .dot{width:1px;height:14px;background:var(--c-line);}
.hero-facts strong{color:var(--c-primary);font-weight:700;}
.hero-cover{
  position:relative;
  border-radius:var(--r-portrait);
  overflow:hidden;
  box-shadow:var(--sh-2);
  aspect-ratio:4/3;
  background:var(--c-primary-soft);
}
.hero-cover img{width:100%;height:100%;object-fit:cover;}
.hero-cover .cover-badge{
  position:absolute;left:16px;top:16px;
  padding:6px 12px;
  border-radius:var(--r-badge);
  background:rgba(255,255,255,0.92);
  color:var(--c-primary-dark);
  font-size:12px;font-weight:600;
  backdrop-filter:blur(2px);
}

/* ===== 工具条 ===== */
.toolbar{
  display:flex;align-items:center;justify-content:space-between;gap:20px;
  flex-wrap:wrap;
  padding:18px 20px;
  background:#FFFFFF;
  border:1px solid var(--c-line);
  border-radius:var(--r-card);
  box-shadow:var(--sh-1);
  margin-bottom:28px;
}
.chips{display:flex;flex-wrap:wrap;gap:10px;}
.chip{
  display:inline-flex;align-items:center;
  min-height:36px;
  padding:0 16px;
  border-radius:var(--r-badge);
  border:1px solid var(--c-line);
  background:#FFFFFF;
  color:var(--c-ink-2);
  font-size:13px;
  font-weight:500;
  transition:background-color .18s ease,color .18s ease,border-color .18s ease;
}
.chip:hover{background:var(--c-primary-soft);color:var(--c-primary);border-color:var(--c-primary);}
.chip.is-on{background:var(--c-primary);border-color:var(--c-primary);color:#FFFFFF;font-weight:600;}
.chip.is-on:hover{background:var(--c-primary-dark);color:#FFFFFF;}
.sort-wrap{display:flex;align-items:center;gap:10px;font-size:13px;color:var(--c-ink-3);}
.sort-select{
  height:38px;
  border-radius:10px;
  border:1px solid var(--c-line);
  background:#FFFFFF;
  color:var(--c-ink);
  font-size:13px;
  padding:0 12px;
  min-width:150px;
}
.sort-select:focus{outline:none;border-color:var(--c-primary);box-shadow:0 0 0 3px rgba(29,78,137,0.14);}

/* ===== 资讯列表 ===== */
.news-list{display:flex;flex-direction:column;gap:20px;}
.news-item{
  display:grid;
  grid-template-columns:4fr 8fr;
  gap:24px;
  padding:20px;
  background:#FFFFFF;
  border:1px solid var(--c-line);
  border-radius:var(--r-card);
  box-shadow:var(--sh-1);
  transition:transform .2s ease,box-shadow .2s ease,border-color .2s ease;
}
.news-item:hover{transform:translateY(-4px);box-shadow:var(--sh-2);border-color:#CFDEEE;}
.news-thumb{
  border-radius:var(--r-img);
  overflow:hidden;
  aspect-ratio:4/3;
  background:var(--c-primary-soft);
}
.news-thumb img{width:100%;height:100%;object-fit:cover;transition:transform .3s ease;}
.news-item:hover .news-thumb img{transform:scale(1.03);}
.news-body{display:flex;flex-direction:column;}
.badge{
  display:inline-flex;align-items:center;
  padding:4px 12px;
  border-radius:var(--r-badge);
  background:var(--c-primary-soft);
  color:var(--c-primary);
  font-size:12px;
  font-weight:600;
  line-height:1.7;
  align-self:flex-start;
}
.badge-warm{background:#FDF0E5;color:#C4661F;}
.news-body h3{
  margin-top:12px;
  font-size:18px;
  font-weight:600;
  line-height:1.5;
  display:-webkit-box;
  -webkit-line-clamp:2;
  -webkit-box-orient:vertical;
  overflow:hidden;
}
.news-body h3 a{color:var(--c-ink);}
.news-body h3 a:hover{color:var(--c-primary);}
.news-body .excerpt{
  margin-top:10px;
  font-size:14px;
  color:var(--c-ink-2);
  line-height:1.8;
  display:-webkit-box;
  -webkit-line-clamp:2;
  -webkit-box-orient:vertical;
  overflow:hidden;
}
.news-meta{
  margin-top:auto;
  padding-top:14px;
  display:flex;align-items:center;justify-content:space-between;gap:16px;
  font-size:13px;color:var(--c-ink-3);
}
.news-meta .left{display:flex;align-items:center;gap:14px;flex-wrap:wrap;}
.news-meta time{color:var(--c-ink-3);}
.more-link{
  display:inline-flex;align-items:center;gap:6px;
  color:var(--c-primary);font-size:13px;font-weight:600;
}
.more-link svg{width:15px;height:15px;transition:transform .2s ease;}
.news-item:hover .more-link svg{transform:translateX(4px);}

/* ===== 分页 ===== */
.pager{
  display:flex;align-items:center;justify-content:center;gap:8px;
  margin-top:40px;flex-wrap:wrap;
}
.pager a,.pager span{
  display:inline-flex;align-items:center;justify-content:center;
  min-width:44px;height:44px;
  padding:0 14px;
  border-radius:10px;
  border:1px solid var(--c-line);
  background:#FFFFFF;
  color:var(--c-ink-2);
  font-size:14px;
  transition:background-color .18s ease,color .18s ease,border-color .18s ease;
}
.pager a:hover{background:var(--c-primary-soft);border-color:var(--c-primary);color:var(--c-primary);}
.pager .is-current{background:var(--c-primary);border-color:var(--c-primary);color:#FFFFFF;font-weight:600;}
.pager .is-disabled{color:var(--c-ink-3);background:var(--c-bg-alt);cursor:not-allowed;}

/* ===== 说明区 ===== */
.note-grid{
  display:grid;
  grid-template-columns:repeat(3,1fr);
  gap:24px;
  margin-bottom:40px;
}
.note-card{
  padding:24px;
  background:#FFFFFF;
  border:1px solid var(--c-line);
  border-radius:var(--r-card);
  box-shadow:var(--sh-1);
  transition:transform .2s ease,box-shadow .2s ease;
}
.note-card:hover{transform:translateY(-4px);box-shadow:var(--sh-2);}
.note-card .num{
  display:inline-flex;align-items:center;justify-content:center;
  width:36px;height:36px;border-radius:50%;
  background:var(--c-primary-soft);color:var(--c-primary);
  font-weight:700;font-size:15px;
  margin-bottom:14px;
}
.note-card h3{font-size:17px;font-weight:600;margin-bottom:8px;}
.note-card p{font-size:14px;color:var(--c-ink-2);line-height:1.85;}

/* ===== FAQ ===== */
.faq-list{display:flex;flex-direction:column;gap:12px;max-width:900px;}
.faq-item{
  background:#FFFFFF;
  border:1px solid var(--c-line);
  border-radius:14px;
  padding:18px 22px;
  position:relative;
  transition:box-shadow .2s ease,border-color .2s ease;
}
.faq-item:hover{box-shadow:var(--sh-1);border-color:#CFDEEE;}
.faq-item::before{
  content:"";position:absolute;left:0;top:16px;bottom:16px;width:3px;
  background:var(--c-primary);
  border-radius:3px;
  opacity:0;transition:opacity .2s ease;
}
.faq-item.open::before{opacity:1;}
.faq-q{
  display:flex;align-items:center;justify-content:space-between;gap:16px;
  width:100%;text-align:left;
  font-size:16px;font-weight:600;color:var(--c-ink);
  line-height:1.6;
  padding:0;
}
.faq-q:hover{color:var(--c-primary);}
.faq-icon{
  flex:0 0 22px;width:22px;height:22px;position:relative;
  transition:transform .25s ease;
}
.faq-icon::before,.faq-icon::after{
  content:"";position:absolute;background:var(--c-ink-2);border-radius:2px;
  transition:background-color .2s ease;
}
.faq-icon::before{left:0;right:0;top:10px;height:2px;}
.faq-icon::after{top:0;bottom:0;left:10px;width:2px;}
.faq-item.open .faq-icon{transform:rotate(45deg);}
.faq-item.open .faq-icon::before,.faq-item.open .faq-icon::after{background:var(--c-primary);}
.faq-a{
  max-height:0;overflow:hidden;
  transition:max-height .3s ease;
}
.faq-item.open .faq-a{max-height:340px;}
.faq-a p{
  padding-top:12px;
  font-size:15px;
  color:var(--c-ink-2);
  line-height:1.85;
}

/* ===== CTA 带 ===== */
.cta-band{
  background:var(--c-primary-soft);
  border-radius:var(--r-portrait);
  padding:48px;
  display:grid;
  grid-template-columns:1fr auto;
  gap:32px;
  align-items:center;
  border:1px solid #D5E3F4;
}
.cta-band h2{font-size:clamp(22px,2.4vw,28px);line-height:1.35;}
.cta-band p{margin-top:12px;font-size:15px;color:var(--c-ink-2);max-width:640px;}
.cta-band .btn{white-space:nowrap;}

/* ===== 页脚 ===== */
.site-footer{
  background:var(--c-primary-dark);
  color:var(--c-footer-text);
  padding-top:64px;
  padding-bottom:28px;
  font-size:14px;
}
.footer-grid{
  display:grid;
  grid-template-columns:1.6fr 1fr 1fr 1fr;
  gap:40px;
}
.footer-brand{display:flex;align-items:center;gap:10px;color:#FFFFFF;}
.footer-brand:hover{color:#FFFFFF;}
.footer-brand .brand-mark{background:#FFFFFF;color:var(--c-primary-dark);}
.footer-brand .brand-text small{color:#9DB6D3;}
.footer-desc{margin-top:16px;font-size:14px;line-height:1.85;color:#B9CCE4;max-width:380px;}
.footer-tags{display:flex;flex-wrap:wrap;gap:8px;margin-top:18px;}
.footer-tags span{
  display:inline-flex;align-items:center;
  padding:4px 12px;
  border-radius:var(--r-badge);
  background:rgba(255,255,255,0.08);
  color:#D7E2F0;
  font-size:12px;
}
.footer-col h4{font-size:15px;color:#FFFFFF;margin-bottom:16px;font-weight:600;}
.footer-col ul{display:flex;flex-direction:column;gap:10px;}
.footer-col a{color:#B9CCE4;font-size:14px;}
.footer-col a:hover{color:var(--c-accent);}
.footer-divider{height:1px;background:rgba(255,255,255,0.12);margin:36px 0 20px;}
.footer-keywords{font-size:12px;color:rgba(255,255,255,0.7);line-height:1.9;overflow:hidden;text-overflow:ellipsis;}
.footer-bottom{
  display:flex;align-items:center;justify-content:space-between;gap:20px;
  font-size:12px;color:rgba(255,255,255,0.7);
  flex-wrap:wrap;
}
.to-top{color:#D7E2F0;}
.to-top:hover{color:var(--c-accent);}

/* ===== 入场动效 ===== */
.fade-up{opacity:0;transform:translateY(16px);transition:opacity .5s ease,transform .5s ease;}
.fade-up.in{opacity:1;transform:none;}

/* ===== 响应式 ===== */
@media (max-width:1199px){
  :root{--sp-section:64px;}
  .page-hero-grid{grid-template-columns:1fr 1fr;gap:32px;}
  .note-grid{grid-template-columns:repeat(3,1fr);}
}
@media (max-width:1023px){
  .mainnav .nav-list{gap:18px;}
  .nav-list a{font-size:14px;}
  .page-hero-grid{grid-template-columns:1fr;gap:32px;}
  .hero-cover{max-width:520px;}
  .footer-grid{grid-template-columns:1fr 1fr;gap:32px;}
  .cta-band{grid-template-columns:1fr;padding:40px;}
  .cta-band .btn{justify-self:start;}
  .note-grid{grid-template-columns:1fr 1fr;}
}
@media (max-width:767px){
  :root{--sp-section:48px;}
  .container{padding-left:16px;padding-right:16px;}
  .topbar-tip{display:none;}
  .topbar-inner{justify-content:space-between;gap:12px;}
  .topbar-links{gap:14px;}
  .mainnav-inner{height:64px;}
  .burger{display:flex;}
  .nav-cta{display:none;}
  .nav-list{
    position:fixed;
    top:0;right:0;
    width:min(84vw,340px);
    height:100vh;
    background:#FFFFFF;
    flex-direction:column;
    align-items:stretch;
    gap:0;
    padding:84px 20px 32px;
    transform:translateX(105%);
    transition:transform .28s ease;
    box-shadow:var(--sh-3);
    overflow-y:auto;
    z-index:58;
  }
  .mainnav.menu-open .nav-list{transform:none;}
  .nav-list li{border-bottom:1px solid var(--c-line);}
  .nav-list a{
    display:block;
    padding:0 0 0 14px;
    line-height:48px;
    font-size:15px;
    border-left:3px solid transparent;
  }
  .nav-list a::after{display:none;}
  .nav-list a.is-active{border-left-color:var(--c-primary);background:var(--c-primary-soft);}
  .nav-list a:hover{background:var(--c-bg-alt);}
  .search-form{flex-direction:column;align-items:stretch;}
  .search-form .btn{width:100%;}
  .page-hero{padding-top:36px;padding-bottom:36px;}
  .page-hero .lede{font-size:15px;}
  .hero-facts{gap:10px;font-size:13px;}
  .toolbar{padding:16px;gap:14px;}
  .chip{min-height:40px;}
  .sort-wrap{width:100%;justify-content:space-between;}
  .sort-select{flex:1 1 auto;}
  .news-item{grid-template-columns:1fr;gap:16px;padding:16px;}
  .news-thumb{aspect-ratio:16/9;}
  .news-meta{flex-direction:column;align-items:flex-start;gap:10px;}
  .note-grid{grid-template-columns:1fr;}
  .faq-item{padding:16px;}
  .faq-q{font-size:15px;}
  .cta-band{padding:32px 24px;border-radius:16px;}
  .cta-band .btn{width:100%;}
  .footer-grid{grid-template-columns:1fr;gap:28px;}
  .site-footer{padding-top:48px;}
  .footer-bottom{flex-direction:column;align-items:flex-start;gap:10px;}
}
@media (max-width:520px){
  .hero-facts .dot{display:none;}
  .hero-facts{flex-direction:column;align-items:flex-start;gap:8px;}
  .pager a,.pager span{min-width:40px;height:40px;padding:0 10px;font-size:13px;}
}
@media (prefers-reduced-motion:reduce){
  html{scroll-behavior:auto;}
  .fade-up{opacity:1;transform:none;transition:none;}
  *{transition-duration:.001ms !important;animation-duration:.001ms !important;}
}