/* roulang page: index */
:root{
  --c-primary:#175A9E;
  --c-primary-hover:#124A85;
  --c-primary-soft:#EAF2FA;
  --c-accent:#0F8A7E;
  --c-accent-soft:#E6F5F3;
  --c-cta:#D9480F;
  --c-cta-hover:#B93A09;
  --c-cta-soft:#FDEDE6;
  --c-bg:#F5F8FC;
  --c-surface:#FFFFFF;
  --c-ink:#14202E;
  --c-ink-2:#56687D;
  --c-line:#E3EAF2;
  --c-dark:#0E1A2B;
  --c-dark-2:#16243A;
  --radius-card:14px;
  --radius-img:12px;
  --radius-btn:10px;
  --shadow-card:0 1px 2px rgba(20,32,46,.04), 0 8px 24px rgba(23,90,158,.08);
  --shadow-hover:0 4px 10px rgba(20,32,46,.06), 0 18px 36px rgba(23,90,158,.15);
  --container:1200px;
  --gap:24px;
}
*{box-sizing:border-box;}
html{-webkit-text-size-adjust:100%;scroll-behavior:smooth;}
body{
  margin:0;
  font-family:-apple-system,BlinkMacSystemFont,"PingFang SC","Hiragino Sans GB","Microsoft YaHei","Noto Sans SC",sans-serif;
  font-size:16px;
  line-height:1.75;
  color:var(--c-ink);
  background:var(--c-bg);
  -webkit-font-smoothing:antialiased;
}
img{max-width:100%;height:auto;display:block;border-radius:var(--radius-img);}
a{color:var(--c-primary);text-decoration:none;transition:color .16s ease,background-color .16s ease,border-color .16s ease,box-shadow .16s ease,transform .16s ease;}
a:hover{color:var(--c-primary-hover);}
h1,h2,h3,h4{margin:0;font-weight:700;color:var(--c-ink);letter-spacing:.2px;}
h1{font-size:42px;line-height:1.3;}
h2{font-size:30px;line-height:1.35;}
h3{font-size:20px;line-height:1.45;}
p{margin:0 0 16px;}
ul{margin:0;padding:0;list-style:none;}
button{font-family:inherit;}
:focus-visible{outline:2px solid var(--c-primary);outline-offset:2px;border-radius:6px;}
.container{max-width:var(--container);margin:0 auto;padding:0 24px;width:100%;}
.section{padding:88px 0;}
.section-alt{background:var(--c-surface);}
.section-head{max-width:760px;margin-bottom:40px;}
.section-head.center{margin-left:auto;margin-right:auto;text-align:center;}
.eyebrow{
  display:inline-flex;align-items:center;gap:8px;
  font-size:13px;font-weight:600;letter-spacing:.6px;
  color:var(--c-primary);background:var(--c-primary-soft);
  border-radius:999px;padding:6px 14px;margin-bottom:16px;
}
.eyebrow.accent{color:var(--c-accent);background:var(--c-accent-soft);}
.section-head h2{margin-bottom:14px;}
.section-head p{color:var(--c-ink-2);font-size:16px;margin:0;}
.head-row{display:flex;align-items:flex-end;justify-content:space-between;gap:24px;margin-bottom:40px;flex-wrap:wrap;}
.head-row .section-head{margin-bottom:0;}
.text-link{font-size:15px;font-weight:600;display:inline-flex;align-items:center;gap:8px;white-space:nowrap;}
.text-link i{font-size:12px;transition:transform .16s ease;}
.text-link:hover i{transform:translateX(4px);}

/* ---------- buttons ---------- */
.btn{
  display:inline-flex;align-items:center;justify-content:center;gap:8px;
  padding:13px 22px;min-height:46px;
  font-size:15.5px;font-weight:600;line-height:1;
  border-radius:var(--radius-btn);border:1px solid transparent;
  cursor:pointer;transition:all .16s ease;text-align:center;
}
.btn i{font-size:14px;}
.btn-primary{background:var(--c-primary);color:#fff;box-shadow:0 6px 16px rgba(23,90,158,.22);}
.btn-primary:hover{background:var(--c-primary-hover);color:#fff;transform:translateY(-2px);box-shadow:0 10px 22px rgba(23,90,158,.28);}
.btn-primary:active{transform:translateY(0);}
.btn-cta{background:var(--c-cta);color:#fff;box-shadow:0 8px 18px rgba(217,72,15,.24);}
.btn-cta:hover{background:var(--c-cta-hover);color:#fff;transform:translateY(-2px);box-shadow:0 12px 26px rgba(217,72,15,.3);}
.btn-cta:active{transform:translateY(0);}
.btn-ghost{background:transparent;color:var(--c-primary);border-color:#C6D8EC;}
.btn-ghost:hover{background:var(--c-primary-soft);color:var(--c-primary-hover);border-color:var(--c-primary);transform:translateY(-2px);}
.btn-sm{padding:10px 16px;min-height:40px;font-size:14.5px;}
.btn-block{width:100%;}
.btn-row{display:flex;flex-wrap:wrap;gap:12px;align-items:center;}

/* ---------- header / nav ---------- */
.site-header{
  position:sticky;top:0;z-index:60;
  background:rgba(255,255,255,.96);
  backdrop-filter:saturate(180%) blur(10px);
  border-bottom:1px solid var(--c-line);
  transition:box-shadow .2s ease;
}
.site-header.is-scrolled{box-shadow:0 6px 22px rgba(20,32,46,.07);}
.nav-wrap{display:flex;align-items:center;justify-content:space-between;gap:20px;height:68px;}
.brand{display:flex;align-items:center;gap:10px;flex:none;}
.brand-mark{
  width:36px;height:36px;border-radius:10px;flex:none;
  background:linear-gradient(135deg,var(--c-primary),#2A7BC4);
  color:#fff;font-weight:700;font-size:16px;
  display:flex;align-items:center;justify-content:center;
  box-shadow:0 6px 14px rgba(23,90,158,.28);
}
.brand-name{font-size:19px;font-weight:700;color:var(--c-ink);letter-spacing:.4px;}
.brand-sub{display:block;font-size:11.5px;color:var(--c-ink-2);font-weight:500;letter-spacing:.6px;line-height:1;}
.main-nav{display:flex;align-items:center;}
.main-nav ul{display:flex;align-items:center;gap:4px;}
.main-nav a{
  position:relative;display:block;padding:8px 14px;
  font-size:15px;font-weight:600;color:var(--c-ink);border-radius:8px;
}
.main-nav a::after{
  content:"";position:absolute;left:14px;right:14px;bottom:2px;height:2px;
  background:var(--c-primary);border-radius:2px;transform:scaleX(0);transform-origin:left;
  transition:transform .18s ease;
}
.main-nav a:hover{background:var(--c-primary-soft);color:var(--c-primary);}
.main-nav a:hover::after,.main-nav a.active::after{transform:scaleX(1);}
.main-nav a.active{color:var(--c-primary);}
.nav-actions{display:flex;align-items:center;gap:10px;flex:none;}
.mega{position:relative;}
.mega-toggle{
  display:inline-flex;align-items:center;gap:8px;
  background:transparent;border:1px solid var(--c-line);border-radius:999px;
  padding:9px 16px;font-size:14.5px;font-weight:600;color:var(--c-ink-2);cursor:pointer;
  transition:all .16s ease;
}
.mega-toggle:hover{border-color:var(--c-primary);color:var(--c-primary);background:var(--c-primary-soft);}
.mega-toggle i{font-size:11px;transition:transform .18s ease;}
.mega:hover .mega-toggle i{transform:rotate(180deg);}
.mega-panel{
  position:absolute;top:calc(100% + 12px);right:0;width:620px;
  background:var(--c-surface);border:1px solid var(--c-line);
  border-radius:var(--radius-card);box-shadow:0 18px 44px rgba(20,32,46,.14);
  padding:22px;display:grid;grid-template-columns:1.05fr 1fr;gap:22px;
  opacity:0;visibility:hidden;transform:translateY(8px);
  transition:opacity .16s ease,transform .16s ease,visibility .16s ease;
}
.mega:hover .mega-panel,.mega:focus-within .mega-panel{opacity:1;visibility:visible;transform:translateY(0);}
.mega-col-title{font-size:12.5px;font-weight:700;letter-spacing:.8px;color:var(--c-ink-2);margin-bottom:12px;text-transform:uppercase;}
.mega-list li{border-bottom:1px solid var(--c-line);}
.mega-list li:last-child{border-bottom:0;}
.mega-list a{display:block;padding:10px 0;font-size:14.5px;font-weight:600;color:var(--c-ink);}
.mega-list a:hover{color:var(--c-primary);padding-left:4px;}
.mega-list span{display:block;font-size:12.5px;font-weight:400;color:var(--c-ink-2);}
.mega-card{
  display:block;border:1px solid var(--c-line);border-radius:12px;overflow:hidden;
  background:var(--c-bg);transition:all .16s ease;
}
.mega-card:hover{box-shadow:var(--shadow-hover);transform:translateY(-3px);border-color:#CFDFEF;}
.mega-card img{width:100%;height:110px;object-fit:cover;border-radius:0;}
.mega-card-body{padding:14px;}
.mega-card-body strong{display:block;font-size:15px;margin-bottom:4px;color:var(--c-ink);}
.mega-card-body span{font-size:13px;color:var(--c-ink-2);}
.mega-card-body em{display:inline-block;margin-top:10px;font-style:normal;font-size:13.5px;font-weight:600;color:var(--c-primary);}
.nav-burger{
  display:none;background:var(--c-surface);border:1px solid var(--c-line);border-radius:10px;
  width:44px;height:44px;font-size:17px;color:var(--c-ink);cursor:pointer;
}
.nav-burger:hover{border-color:var(--c-primary);color:var(--c-primary);}

/* ---------- hero ---------- */
.hero{
  position:relative;overflow:hidden;
  background-image:linear-gradient(100deg,rgba(245,248,252,.96) 0%,rgba(245,248,252,.9) 42%,rgba(245,248,252,.55) 72%,rgba(245,248,252,.35) 100%),
    url('/assets/images/backpic/back-1.png');
  background-size:cover;background-position:center;
  border-bottom:1px solid var(--c-line);
}
.hero-inner{display:grid;grid-template-columns:1.04fr .96fr;gap:56px;align-items:center;padding:76px 0 84px;min-height:560px;}
.hero h1{margin:0 0 18px;}
.hero h1 .hl{color:var(--c-primary);}
.hero-lead{font-size:17px;color:var(--c-ink-2);max-width:560px;margin-bottom:26px;}
.hero-points{display:flex;flex-wrap:wrap;gap:10px;margin-bottom:30px;}
.chip{
  display:inline-flex;align-items:center;gap:7px;
  background:var(--c-surface);border:1px solid var(--c-line);border-radius:999px;
  padding:7px 14px;font-size:13.5px;font-weight:600;color:var(--c-ink-2);
}
.chip i{color:var(--c-accent);font-size:12.5px;}
.hero-note{margin-top:22px;font-size:13.5px;color:var(--c-ink-2);display:flex;align-items:center;gap:8px;}
.hero-note i{color:var(--c-accent);}
.hero-visual{position:relative;}
.hero-visual img{width:100%;height:400px;object-fit:cover;border-radius:18px;box-shadow:0 24px 50px rgba(20,32,46,.16);}
.float-card{
  position:absolute;left:-26px;bottom:28px;width:246px;
  background:var(--c-surface);border-radius:var(--radius-card);padding:16px 18px;
  box-shadow:0 16px 36px rgba(20,32,46,.16);border:1px solid var(--c-line);
}
.float-card .fc-top{display:flex;align-items:center;justify-content:space-between;margin-bottom:10px;}
.status-dot{display:inline-flex;align-items:center;gap:7px;font-size:13px;font-weight:600;color:var(--c-accent);}
.status-dot::before{content:"";width:8px;height:8px;border-radius:50%;background:var(--c-accent);box-shadow:0 0 0 3px var(--c-accent-soft);}
.float-card .fc-score{font-size:13px;font-weight:700;color:var(--c-cta);background:var(--c-cta-soft);border-radius:999px;padding:3px 10px;}
.float-card strong{display:block;font-size:15.5px;margin-bottom:4px;}
.float-card p{font-size:13px;color:var(--c-ink-2);margin:0;}

/* ---------- trust bar ---------- */
.trust{background:var(--c-surface);border-bottom:1px solid var(--c-line);}
.trust-grid{display:grid;grid-template-columns:repeat(4,1fr);}
.trust-item{padding:30px 26px;border-right:1px solid var(--c-line);}
.trust-item:last-child{border-right:0;}
.trust-num{font-size:27px;font-weight:700;color:var(--c-primary);font-variant-numeric:tabular-nums;line-height:1.2;}
.trust-num span{font-size:15px;margin-left:2px;}
.trust-label{font-size:14px;color:var(--c-ink-2);margin-top:4px;}

/* ---------- entry grid ---------- */
.entry-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:var(--gap);}
.entry-card{
  background:var(--c-surface);border:1px solid var(--c-line);border-radius:var(--radius-card);
  overflow:hidden;box-shadow:var(--shadow-card);display:flex;flex-direction:column;
  transition:transform .18s ease,box-shadow .18s ease,border-color .18s ease;
}
.entry-card:hover{transform:translateY(-4px);box-shadow:var(--shadow-hover);border-color:#CFDFEF;}
.entry-media{position:relative;overflow:hidden;}
.entry-media img{width:100%;height:168px;object-fit:cover;border-radius:0;transition:transform .3s ease;}
.entry-card:hover .entry-media img{transform:scale(1.04);}
.entry-card.large{grid-row:span 2;}
.entry-card.large .entry-media img{height:300px;}
.badge{
  position:absolute;top:12px;left:12px;
  font-size:12px;font-weight:700;letter-spacing:.4px;
  border-radius:999px;padding:5px 11px;background:var(--c-primary-soft);color:var(--c-primary);
}
.badge.hot{background:var(--c-cta-soft);color:var(--c-cta);left:auto;right:12px;}
.badge.ok{background:var(--c-accent-soft);color:var(--c-accent);}
.entry-body{padding:20px 20px 22px;display:flex;flex-direction:column;flex:1;}
.entry-body h3{margin-bottom:8px;}
.entry-body p{font-size:14.5px;color:var(--c-ink-2);margin-bottom:14px;}
.entry-meta{
  display:flex;align-items:center;gap:14px;font-size:13px;color:var(--c-ink-2);
  padding-top:12px;border-top:1px solid var(--c-line);margin-top:auto;
}
.entry-meta i{color:var(--c-primary);font-size:12px;margin-right:5px;}
.entry-actions{display:flex;gap:10px;flex-wrap:wrap;margin-top:14px;}
.entry-text{
  grid-column:1 / -1;background:var(--c-primary-soft);border:1px dashed #BFD5EA;border-radius:var(--radius-card);
  padding:22px 26px;display:flex;align-items:center;justify-content:space-between;gap:20px;flex-wrap:wrap;
}
.entry-text strong{display:block;font-size:18px;margin-bottom:4px;}
.entry-text span{font-size:14px;color:var(--c-ink-2);}

/* ---------- reviews ---------- */
.reviews{background:var(--c-surface);}
.review-track{
  display:flex;gap:var(--gap);overflow-x:auto;scroll-snap-type:x mandatory;
  padding-bottom:8px;scrollbar-width:none;
}
.review-track::-webkit-scrollbar{display:none;}
.review-card{
  flex:0 0 calc((100% - 48px)/3);scroll-snap-align:start;
  background:var(--c-bg);border:1px solid var(--c-line);border-radius:var(--radius-card);
  padding:24px;display:flex;flex-direction:column;
}
.review-stars{color:var(--c-accent);font-size:14px;letter-spacing:2px;margin-bottom:12px;}
.review-stars b{font-size:15px;margin-left:6px;letter-spacing:0;color:var(--c-accent);}
.review-card p{font-size:14.8px;color:var(--c-ink);margin-bottom:18px;}
.review-user{display:flex;align-items:center;gap:12px;margin-top:auto;padding-top:16px;border-top:1px solid var(--c-line);}
.avatar{
  width:42px;height:42px;border-radius:50%;flex:none;display:flex;align-items:center;justify-content:center;
  background:var(--c-primary);color:#fff;font-weight:700;font-size:15px;
}
.review-user b{display:block;font-size:14.5px;}
.review-user small{font-size:12.5px;color:var(--c-ink-2);}
.review-dots{display:flex;justify-content:center;gap:8px;margin-top:26px;}
.review-dots button{
  width:9px;height:9px;border-radius:999px;border:0;background:#C9D6E4;cursor:pointer;padding:0;
  transition:all .16s ease;
}
.review-dots button.active{width:26px;background:var(--c-primary);}

/* ---------- guarantee ---------- */
.guarantee{background:var(--c-primary-soft);border-top:1px solid #D8E6F4;border-bottom:1px solid #D8E6F4;}
.guarantee-grid{display:grid;grid-template-columns:repeat(4,1fr);}
.guarantee-item{padding:8px 24px;border-right:1px solid #D3E2F1;display:flex;gap:14px;align-items:flex-start;}
.guarantee-item:last-child{border-right:0;}
.guarantee-icon{
  width:40px;height:40px;flex:none;border-radius:10px;background:var(--c-surface);color:var(--c-primary);
  display:flex;align-items:center;justify-content:center;font-size:16px;box-shadow:0 4px 12px rgba(23,90,158,.12);
}
.guarantee-item strong{display:block;font-size:15.5px;margin-bottom:2px;}
.guarantee-item span{font-size:13.5px;color:var(--c-ink-2);}

/* ---------- latest / cms ---------- */
.latest-grid{display:grid;grid-template-columns:1.02fr 1fr;gap:32px;align-items:start;}
.latest-feature{
  background:var(--c-surface);border:1px solid var(--c-line);border-radius:var(--radius-card);
  overflow:hidden;box-shadow:var(--shadow-card);transition:transform .18s ease,box-shadow .18s ease;
}
.latest-feature:hover{transform:translateY(-4px);box-shadow:var(--shadow-hover);}
.latest-feature img{width:100%;height:250px;object-fit:cover;border-radius:0;}
.latest-feature .lf-body{padding:24px;}
.latest-feature h3{font-size:22px;margin-bottom:10px;}
.latest-feature p{font-size:14.8px;color:var(--c-ink-2);}
.latest-list{background:var(--c-surface);border:1px solid var(--c-line);border-radius:var(--radius-card);overflow:hidden;}
.latest-item{
  display:block;padding:18px 22px;border-bottom:1px solid var(--c-line);transition:background-color .16s ease;
}
.latest-item:last-child{border-bottom:0;}
.latest-item:hover{background:var(--c-primary-soft);}
.latest-item h4{font-size:16px;font-weight:600;margin:0 0 6px;color:var(--c-ink);transition:color .16s ease;}
.latest-item:hover h4{color:var(--c-primary);}
.latest-item p{font-size:13.5px;color:var(--c-ink-2);margin:0 0 8px;display:-webkit-box;-webkit-line-clamp:2;-webkit-box-orient:vertical;overflow:hidden;}
.latest-meta{display:flex;align-items:center;gap:14px;font-size:12.8px;color:var(--c-ink-2);}
.latest-meta .tag{background:var(--c-accent-soft);color:var(--c-accent);border-radius:999px;padding:2px 10px;font-weight:600;}
.empty-state{
  background:var(--c-surface);border:1px dashed #C8D8E8;border-radius:var(--radius-card);
  padding:64px 24px;text-align:center;min-height:260px;display:flex;flex-direction:column;align-items:center;justify-content:center;gap:12px;
}
.empty-state i{font-size:30px;color:#A9BDD4;}
.empty-state strong{font-size:17px;}
.empty-state p{font-size:14px;color:var(--c-ink-2);margin:0;}

/* ---------- faq ---------- */
.faq-wrap{max-width:900px;margin:0 auto;}
.faq-item{
  background:var(--c-surface);border:1px solid var(--c-line);border-radius:var(--radius-card);
  margin-bottom:14px;overflow:hidden;transition:border-color .16s ease,box-shadow .16s ease;
}
.faq-item[open]{border-color:#C6D8EC;box-shadow:var(--shadow-card);}
.faq-item summary{
  list-style:none;cursor:pointer;padding:20px 24px 20px 26px;
  font-size:16px;font-weight:600;color:var(--c-ink);
  display:flex;align-items:center;justify-content:space-between;gap:16px;position:relative;
}
.faq-item summary::-webkit-details-marker{display:none;}
.faq-item summary::before{
  content:"";position:absolute;left:0;top:16px;bottom:16px;width:3px;border-radius:0 3px 3px 0;
  background:var(--c-primary);transform:scaleY(0);transform-origin:center;transition:transform .18s ease;
}
.faq-item[open] summary::before{transform:scaleY(1);}
.faq-item summary:hover{background:#FAFCFE;}
.faq-icon{
  width:26px;height:26px;flex:none;border-radius:50%;background:var(--c-primary-soft);color:var(--c-primary);
  display:flex;align-items:center;justify-content:center;font-size:13px;transition:background-color .16s ease,color .16s ease;
}
.faq-item[open] .faq-icon{background:var(--c-primary);color:#fff;}
.faq-body{padding:0 26px 22px;font-size:15px;color:var(--c-ink-2);line-height:1.8;}
.faq-body ul{margin-top:10px;}
.faq-body li{position:relative;padding-left:18px;margin-bottom:8px;}
.faq-body li::before{content:"";position:absolute;left:0;top:11px;width:6px;height:6px;border-radius:2px;background:var(--c-accent);}

/* ---------- cta ---------- */
.cta-band{
  background-image:linear-gradient(115deg,rgba(23,90,158,.95),rgba(15,138,126,.9)),url('/assets/images/backpic/back-3.png');
  background-size:cover;background-position:center;color:#fff;
  border-radius:20px;padding:56px;position:relative;overflow:hidden;
}
.cta-band h2{color:#fff;margin-bottom:14px;}
.cta-band p{color:rgba(255,255,255,.88);max-width:620px;font-size:16px;}
.cta-actions{display:flex;flex-wrap:wrap;gap:14px;align-items:center;margin-top:26px;}
.cta-band .btn-ghost{color:#fff;border-color:rgba(255,255,255,.55);}
.cta-band .btn-ghost:hover{background:rgba(255,255,255,.14);color:#fff;border-color:#fff;}
.cta-micro{font-size:13.5px;color:rgba(255,255,255,.82);display:flex;align-items:center;gap:8px;}

/* ---------- footer ---------- */
.site-footer{background:var(--c-dark);color:#B7C4D4;padding:64px 0 0;margin-top:0;}
.footer-grid{display:grid;grid-template-columns:1.4fr 1fr 1fr 1.2fr;gap:36px;padding-bottom:44px;}
.footer-brand{display:flex;align-items:center;gap:10px;margin-bottom:16px;}
.footer-brand .brand-mark{background:linear-gradient(135deg,#2A7BC4,#0F8A7E);}
.footer-brand .brand-name{color:#fff;}
.footer-brand .brand-sub{color:#8FA3B8;}
.site-footer p{font-size:14px;color:#98ABBF;line-height:1.8;margin:0 0 16px;}
.footer-title{font-size:14px;font-weight:700;color:#fff;letter-spacing:.6px;margin-bottom:16px;}
.footer-links li{margin-bottom:10px;}
.footer-links a{font-size:14px;color:#B7C4D4;}
.footer-links a:hover{color:#fff;}
.footer-contact li{display:flex;gap:10px;font-size:14px;margin-bottom:12px;color:#B7C4D4;}
.footer-contact i{color:#5EA8E0;margin-top:4px;font-size:13px;}
.footer-legal{border-top:1px solid rgba(255,255,255,.1);padding:22px 0 28px;display:flex;justify-content:space-between;gap:16px;flex-wrap:wrap;font-size:13px;color:#8399AF;}
.footer-legal a{color:#9DB2C7;}
.footer-legal a:hover{color:#fff;}

/* ---------- responsive ---------- */
@media (max-width:1024px){
  h1{font-size:34px;}
  h2{font-size:26px;}
  .section{padding:64px 0;}
  .nav-wrap{height:64px;}
  .main-nav{
    position:fixed;top:64px;left:0;right:0;bottom:0;background:var(--c-surface);
    display:block;padding:18px 20px 40px;transform:translateY(-12px);
    opacity:0;visibility:hidden;transition:all .18s ease;overflow-y:auto;
    border-top:1px solid var(--c-line);
  }
  .main-nav.is-open{opacity:1;visibility:visible;transform:translateY(0);}
  .main-nav ul{display:block;}
  .main-nav a{padding:15px 6px;font-size:16px;border-bottom:1px solid var(--c-line);border-radius:0;}
  .main-nav a::after{display:none;}
  .main-nav a.active{background:var(--c-primary-soft);}
  .nav-burger{display:inline-flex;align-items:center;justify-content:center;}
  .mega{display:none;}
  .hero-inner{grid-template-columns:1fr;gap:36px;padding:52px 0 60px;min-height:auto;}
  .hero-visual img{height:300px;}
  .float-card{left:12px;bottom:-16px;width:224px;}
  .trust-grid,.guarantee-grid{grid-template-columns:repeat(2,1fr);}
  .trust-item:nth-child(2){border-right:0;}
  .trust-item:nth-child(1),.trust-item:nth-child(2){border-bottom:1px solid var(--c-line);}
  .guarantee-item{padding:16px 18px;}
  .guarantee-item:nth-child(2){border-right:0;}
  .guarantee-item:nth-child(1),.guarantee-item:nth-child(2){border-bottom:1px solid #D3E2F1;}
  .entry-grid{grid-template-columns:repeat(2,1fr);}
  .entry-card.large{grid-row:span 1;grid-column:span 2;}
  .entry-card.large .entry-media img{height:240px;}
  .latest-grid{grid-template-columns:1fr;}
  .review-card{flex:0 0 calc((100% - 24px)/2);}
  .cta-band{padding:40px 28px;}
  .footer-grid{grid-template-columns:1fr 1fr;gap:30px;}
}
@media (max-width:640px){
  .container{padding:0 16px;}
  h1{font-size:28px;}
  h2{font-size:23px;}
  h3{font-size:18px;}
  .section{padding:48px 0;}
  .brand-sub{display:none;}
  .brand-name{font-size:18px;}
  .hero-inner{padding:38px 0 52px;}
  .hero-lead{font-size:16px;}
  .hero-visual img{height:220px;}
  .float-card{position:static;width:auto;margin-top:16px;left:auto;bottom:auto;}
  .trust-grid,.guarantee-grid{grid-template-columns:1fr;}
  .trust-item{border-right:0;border-bottom:1px solid var(--c-line);padding:22px 4px;}
  .trust-item:last-child{border-bottom:0;}
  .guarantee-item{border-right:0;border-bottom:1px solid #D3E2F1;padding:16px 4px;}
  .guarantee-item:last-child{border-bottom:0;}
  .entry-grid{grid-template-columns:1fr;}
  .entry-card.large{grid-column:span 1;}
  .entry-card.large .entry-media img{height:210px;}
  .entry-text{padding:20px;flex-direction:column;align-items:flex-start;}
  .review-card{flex:0 0 88%;}
  .cta-band{padding:32px 20px;border-radius:16px;}
  .footer-grid{grid-template-columns:1fr;gap:26px;}
  .footer-legal{flex-direction:column;gap:8px;}
  .head-row{flex-direction:column;align-items:flex-start;}
}

/* roulang page: article */
:root{
  --c-primary:#175A9E;
  --c-primary-hover:#124A85;
  --c-primary-soft:#EAF2FA;
  --c-accent:#0F8A7E;
  --c-accent-soft:#E6F5F3;
  --c-cta:#D9480F;
  --c-cta-hover:#B93A09;
  --c-cta-soft:#FDEDE6;
  --c-bg:#F5F8FC;
  --c-surface:#FFFFFF;
  --c-ink:#14202E;
  --c-ink-2:#56687D;
  --c-line:#E3EAF2;
  --c-dark:#0E1A2B;
  --r-card:14px;
  --r-img:12px;
  --r-btn:10px;
  --shadow-card:0 1px 2px rgba(20,32,46,.04),0 8px 24px rgba(23,90,158,.08);
  --shadow-hover:0 2px 4px rgba(20,32,46,.06),0 16px 34px rgba(23,90,158,.16);
  --ease:160ms ease;
}
*,*::before,*::after{box-sizing:border-box}
html{-webkit-text-size-adjust:100%}
body{
  margin:0;
  background:var(--c-bg);
  color:var(--c-ink);
  font-family:-apple-system,BlinkMacSystemFont,"PingFang SC","Microsoft YaHei","Noto Sans SC","Helvetica Neue",Arial,sans-serif;
  font-size:16px;
  line-height:1.75;
  font-weight:400;
}
img{max-width:100%;height:auto;display:block}
a{color:var(--c-primary);text-decoration:none;transition:color var(--ease),background-color var(--ease),border-color var(--ease)}
a:hover{color:var(--c-primary-hover)}
button,input,textarea,select{font:inherit;color:inherit}
ul,ol{margin:0;padding:0;list-style:none}
h1,h2,h3,h4{margin:0;font-weight:700;line-height:1.35;color:var(--c-ink)}
p{margin:0}
:focus-visible{outline:2px solid var(--c-primary);outline-offset:2px}
.container{width:100%;max-width:1200px;margin:0 auto;padding:0 24px}
@media (min-width:1440px){.container{max-width:1280px}}

/* ============ 站点头部 ============ */
.site-header{
  position:sticky;top:0;z-index:60;
  background:var(--c-surface);
  border-bottom:1px solid var(--c-line);
  transition:box-shadow var(--ease);
}
.site-header.is-scrolled{box-shadow:0 6px 20px rgba(20,32,46,.08)}
.nav-wrap{display:flex;align-items:center;gap:20px;min-height:68px}
.brand{display:flex;align-items:center;gap:10px;color:var(--c-ink);flex:0 0 auto}
.brand:hover{color:var(--c-ink)}
.brand-mark{
  width:38px;height:38px;border-radius:11px;flex:0 0 38px;
  background:linear-gradient(135deg,var(--c-primary),#2A7BC4);
  color:#fff;font-weight:700;font-size:20px;letter-spacing:-.02em;
  display:flex;align-items:center;justify-content:center;
}
.brand-name{display:block;font-size:18px;font-weight:700;line-height:1.2}
.brand-sub{display:block;font-size:12px;color:var(--c-ink-2);line-height:1.3}
.main-nav{margin-left:auto}
.main-nav ul{display:flex;align-items:center;gap:4px}
.main-nav a{
  display:block;padding:10px 12px;border-radius:var(--r-btn);
  font-size:15px;color:var(--c-ink-2);font-weight:500;position:relative;
}
.main-nav a:hover{color:var(--c-primary);background:var(--c-primary-soft)}
.main-nav a.active{color:var(--c-primary);font-weight:600}
.main-nav a.active::after{
  content:"";position:absolute;left:12px;right:12px;bottom:4px;height:2px;
  background:var(--c-primary);border-radius:2px;
}
.nav-actions{display:flex;align-items:center;gap:12px;flex:0 0 auto}
.btn{
  display:inline-flex;align-items:center;justify-content:center;gap:8px;
  min-height:44px;padding:11px 22px;border:1px solid transparent;
  border-radius:var(--r-btn);font-size:15px;font-weight:600;cursor:pointer;
  transition:background-color var(--ease),color var(--ease),border-color var(--ease),transform var(--ease),box-shadow var(--ease);
}
.btn-primary{background:var(--c-primary);color:#fff}
.btn-primary:hover{background:var(--c-primary-hover);color:#fff;transform:translateY(-2px)}
.btn-cta{background:var(--c-cta);color:#fff}
.btn-cta:hover{background:var(--c-cta-hover);color:#fff;transform:translateY(-2px);box-shadow:0 10px 22px rgba(217,72,15,.24)}
.btn-outline{background:transparent;border-color:var(--c-primary);color:var(--c-primary)}
.btn-outline:hover{background:var(--c-primary-soft);color:var(--c-primary-hover);transform:translateY(-2px)}
.btn-text{background:transparent;color:var(--c-primary);padding:8px 4px;min-height:0}
.btn-text:hover{color:var(--c-primary-hover);gap:12px}
.btn-sm{min-height:40px;padding:8px 16px;font-size:14px}
.btn:active{transform:translateY(0) scale(.99)}
.mega{position:relative}
.mega-toggle{
  display:inline-flex;align-items:center;gap:8px;min-height:40px;padding:8px 16px;
  background:var(--c-primary-soft);color:var(--c-primary);border:1px solid transparent;
  border-radius:var(--r-btn);font-size:14px;font-weight:600;cursor:pointer;transition:background-color var(--ease);
}
.mega-toggle:hover{background:#DDEAF7}
.mega-panel{
  position:absolute;right:0;top:calc(100% + 12px);width:600px;
  display:grid;grid-template-columns:1.05fr .95fr;gap:20px;padding:20px;
  background:var(--c-surface);border:1px solid var(--c-line);border-radius:var(--r-card);
  box-shadow:var(--shadow-hover);opacity:0;visibility:hidden;transform:translateY(-6px);
  transition:opacity var(--ease),transform var(--ease),visibility var(--ease);
}
.mega:hover .mega-panel,.mega.open .mega-panel{opacity:1;visibility:visible;transform:translateY(0)}
.mega-col-title{font-size:13px;font-weight:700;color:var(--c-ink-2);letter-spacing:.04em;margin-bottom:10px}
.mega-list li+li{margin-top:6px}
.mega-list a{display:block;padding:9px 12px;border-radius:var(--r-btn);font-size:15px;color:var(--c-ink);font-weight:600}
.mega-list a span{display:block;font-size:13px;font-weight:400;color:var(--c-ink-2);margin-top:2px}
.mega-list a:hover{background:var(--c-primary-soft);color:var(--c-primary)}
.mega-card{display:block;border:1px solid var(--c-line);border-radius:var(--r-card);overflow:hidden;color:var(--c-ink);height:100%}
.mega-card img{aspect-ratio:16/10;object-fit:cover;width:100%}
.mega-card-body{padding:14px 16px 16px}
.mega-card-body strong{display:block;font-size:16px}
.mega-card-body span{display:block;font-size:13px;color:var(--c-ink-2);margin:4px 0 10px}
.mega-card-body em{font-style:normal;font-size:13px;font-weight:600;color:var(--c-primary);display:inline-flex;align-items:center;gap:6px}
.mega-card:hover{box-shadow:var(--shadow-card);transform:translateY(-3px);transition:transform var(--ease),box-shadow var(--ease)}
.nav-burger{
  display:none;width:44px;height:44px;border-radius:var(--r-btn);border:1px solid var(--c-line);
  background:var(--c-surface);color:var(--c-ink);cursor:pointer;
}
@media (max-width:1023px){
  .nav-burger{display:inline-flex;align-items:center;justify-content:center}
  .main-nav{
    position:absolute;left:0;right:0;top:100%;margin:0;background:var(--c-surface);
    border-bottom:1px solid var(--c-line);box-shadow:0 18px 30px rgba(20,32,46,.10);
    display:none;padding:10px 16px 16px;
  }
  .main-nav.open{display:block}
  .main-nav ul{flex-direction:column;align-items:stretch;gap:2px}
  .main-nav a{padding:13px 12px;font-size:16px}
  .main-nav a.active::after{display:none}
  .mega{display:none}
}

/* ============ 面包屑 ============ */
.crumb-bar{background:var(--c-surface);border-bottom:1px solid var(--c-line)}
.crumb{display:flex;flex-wrap:wrap;align-items:center;gap:8px;padding:14px 0;font-size:13.5px;color:var(--c-ink-2)}
.crumb a{color:var(--c-ink-2)}
.crumb a:hover{color:var(--c-primary)}
.crumb .sep{color:#B8C5D4}
.crumb .now{color:var(--c-ink);font-weight:600}

/* ============ 文章头部 ============ */
.article-hero{background:var(--c-surface);border-bottom:1px solid var(--c-line);padding:34px 0 38px}
.article-hero .kicker{display:flex;flex-wrap:wrap;align-items:center;gap:10px;margin-bottom:14px}
.tag{
  display:inline-flex;align-items:center;gap:6px;padding:5px 12px;border-radius:999px;
  font-size:13px;font-weight:600;line-height:1.4;
}
.tag-primary{background:var(--c-primary-soft);color:var(--c-primary)}
.tag-accent{background:var(--c-accent-soft);color:var(--c-accent)}
.tag-cta{background:var(--c-cta-soft);color:var(--c-cta)}
.article-hero h1{font-size:40px;letter-spacing:-.01em;max-width:960px}
.article-lead{margin-top:16px;max-width:820px;font-size:17px;color:var(--c-ink-2)}
.article-meta{
  display:flex;flex-wrap:wrap;align-items:center;gap:18px;margin-top:20px;
  padding-top:18px;border-top:1px dashed var(--c-line);font-size:14px;color:var(--c-ink-2);
}
.article-meta i{color:var(--c-primary);margin-right:6px}
@media (max-width:640px){
  .article-hero{padding:24px 0 26px}
  .article-hero h1{font-size:28px}
  .article-lead{font-size:16px}
}

/* ============ 布局与正文 ============ */
.layout{padding:44px 0 8px}
.article-shell{display:grid;grid-template-columns:minmax(0,1fr) 330px;gap:36px;align-items:start}
@media (max-width:1023px){.article-shell{grid-template-columns:1fr;gap:26px}}
.panel{background:var(--c-surface);border:1px solid var(--c-line);border-radius:var(--r-card);box-shadow:var(--shadow-card)}
.article-card{padding:38px 44px 42px}
@media (max-width:640px){.article-card{padding:24px 18px 28px}}
.article-body{max-width:780px;font-size:16px;line-height:1.8;color:var(--c-ink)}
.article-body p{margin:0 0 1.2em}
.article-body > h2{font-size:26px;margin:1.9em 0 .8em;padding-left:16px;position:relative}
.article-body > h2::before{content:"";position:absolute;left:0;top:.22em;bottom:.22em;width:4px;border-radius:3px;background:var(--c-primary)}
.article-body > h2:first-child{margin-top:0}
.article-body > h3{font-size:20px;margin:1.6em 0 .6em}
.article-body > h4{font-size:17px;margin:1.4em 0 .5em;color:var(--c-primary)}
.article-body ul,.article-body ol{margin:0 0 1.2em;padding-left:1.3em;list-style:disc}
.article-body ol{list-style:decimal}
.article-body li{margin-bottom:.55em}
.article-body li::marker{color:var(--c-primary);font-weight:600}
.article-body img{border-radius:var(--r-img);margin:1.2em 0}
.article-body blockquote{
  margin:1.5em 0;padding:16px 20px;background:var(--c-primary-soft);
  border-left:3px solid var(--c-primary);border-radius:0 var(--r-btn) var(--r-btn) 0;color:var(--c-ink);
}
.article-body blockquote p:last-child{margin-bottom:0}
.article-body table{width:100%;border-collapse:collapse;margin:1.5em 0;font-size:15px;font-variant-numeric:tabular-nums}
.article-body th,.article-body td{padding:11px 14px;border-bottom:1px solid var(--c-line);text-align:left;vertical-align:top}
.article-body th{background:var(--c-primary-soft);color:var(--c-primary);font-weight:600}
.article-body tbody tr:nth-child(even){background:#FAFCFF}
.article-body a{color:var(--c-primary);text-decoration:underline;text-underline-offset:3px}
.article-body code{background:var(--c-bg);padding:2px 7px;border-radius:6px;font-size:14px;color:var(--c-primary)}
.article-body hr{border:0;border-top:1px solid var(--c-line);margin:2em 0}
.article-body figure{margin:1.5em 0}
.article-body figcaption{font-size:13px;color:var(--c-ink-2);margin-top:8px;text-align:center}
.article-foot{
  display:flex;flex-wrap:wrap;align-items:center;justify-content:space-between;gap:14px;
  margin-top:34px;padding-top:22px;border-top:1px solid var(--c-line);font-size:14px;color:var(--c-ink-2);
}
.empty-state{
  text-align:center;padding:56px 20px;background:var(--c-bg);border:1px dashed var(--c-line);border-radius:var(--r-card);
}
.empty-state i{font-size:34px;color:var(--c-primary);margin-bottom:14px;display:block}
.empty-state h2{font-size:20px;margin-bottom:8px}
.empty-state p{color:var(--c-ink-2);margin-bottom:18px}

/* ============ 侧栏 ============ */
.side{display:flex;flex-direction:column;gap:20px}
@media (min-width:1024px){.side{position:sticky;top:92px}}
.side-card{padding:22px}
.side-title{font-size:16px;font-weight:700;display:flex;align-items:center;gap:8px;margin-bottom:14px}
.side-title i{color:var(--c-primary)}
.side-list li+li{border-top:1px solid var(--c-line)}
.side-list a{display:flex;align-items:center;justify-content:space-between;gap:10px;padding:12px 4px;font-size:15px;color:var(--c-ink);font-weight:500}
.side-list a i{color:#B8C5D4;font-size:12px}
.side-list a:hover{color:var(--c-primary)}
.side-list a:hover i{color:var(--c-primary);transform:translateX(3px)}
.side-list a i{transition:transform var(--ease),color var(--ease)}
.side-note{background:var(--c-accent-soft);border-color:#CDE9E5;padding:18px 20px}
.side-note .side-title{color:var(--c-accent)}
.side-note p{font-size:14px;color:#2C5A55}
.side-note i.fa-solid{color:var(--c-accent)}
.side-cover{border-radius:var(--r-img);overflow:hidden;margin-bottom:14px}
.side-cover img{aspect-ratio:16/10;object-fit:cover;width:100%}
.side-cta p{font-size:14px;color:var(--c-ink-2);margin-bottom:14px}

/* ============ 相关推荐 ============ */
.related{padding:52px 0 10px}
.section-head{display:flex;flex-wrap:wrap;align-items:flex-end;justify-content:space-between;gap:12px;margin-bottom:24px}
.section-head h2{font-size:28px}
.section-head p{font-size:15px;color:var(--c-ink-2);margin-top:6px}
.card-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:24px}
@media (max-width:1023px){.card-grid{grid-template-columns:repeat(2,1fr);gap:20px}}
@media (max-width:640px){.card-grid{grid-template-columns:1fr;gap:16px}}
.card{
  background:var(--c-surface);border:1px solid var(--c-line);border-radius:var(--r-card);
  overflow:hidden;display:flex;flex-direction:column;
  transition:transform var(--ease),box-shadow var(--ease),border-color var(--ease);
}
.card:hover{transform:translateY(-4px);box-shadow:var(--shadow-hover);border-color:#CFE0F1}
.card-media{position:relative}
.card-media img{aspect-ratio:16/10;object-fit:cover;width:100%}
.card-badge{position:absolute;left:12px;top:12px;background:rgba(255,255,255,.94);color:var(--c-primary);font-size:12px;font-weight:700;padding:4px 10px;border-radius:999px}
.card-body{padding:18px 20px 20px;display:flex;flex-direction:column;flex:1}
.card-body h3{font-size:18px;line-height:1.45}
.card-body h3 a{color:var(--c-ink)}
.card-body h3 a:hover{color:var(--c-primary)}
.card-body p{font-size:14px;color:var(--c-ink-2);margin:8px 0 14px}
.card-meta{display:flex;align-items:center;gap:14px;font-size:13px;color:var(--c-ink-2);margin-top:auto;padding-top:12px;border-top:1px solid var(--c-line)}

/* ============ FAQ ============ */
.faq-sec{padding:56px 0 8px}
.faq-list{display:grid;gap:12px}
details.faq{
  background:var(--c-surface);border:1px solid var(--c-line);border-left:3px solid transparent;
  border-radius:var(--r-card);padding:0 22px;transition:border-color var(--ease),box-shadow var(--ease);
}
details.faq[open]{border-left-color:var(--c-primary);box-shadow:var(--shadow-card)}
details.faq summary{
  list-style:none;cursor:pointer;display:flex;align-items:center;justify-content:space-between;gap:16px;
  padding:18px 0;font-size:16px;font-weight:600;color:var(--c-ink);
}
details.faq summary::-webkit-details-marker{display:none}
details.faq summary i{color:var(--c-primary);font-size:14px;transition:transform var(--ease)}
details.faq[open] summary i{transform:rotate(45deg)}
details.faq .faq-a{padding:0 0 20px;font-size:15px;color:var(--c-ink-2);max-width:900px}

/* ============ CTA ============ */
.cta-sec{padding:56px 0 64px}
.cta-box{
  position:relative;overflow:hidden;border-radius:18px;padding:52px 48px;
  background:linear-gradient(120deg,rgba(14,26,43,.94),rgba(23,90,158,.86)),
             url('/assets/images/backpic/back-2.png') center/cover no-repeat;
  color:#fff;display:grid;grid-template-columns:1.35fr .65fr;gap:32px;align-items:center;
}
@media (max-width:1023px){.cta-box{grid-template-columns:1fr;padding:38px 26px}}
.cta-box h2{color:#fff;font-size:30px}
.cta-box p{margin-top:12px;color:rgba(255,255,255,.82);font-size:16px;max-width:640px}
.cta-actions{display:flex;flex-wrap:wrap;gap:12px;margin-top:24px}
.cta-box .btn-outline{border-color:rgba(255,255,255,.7);color:#fff}
.cta-box .btn-outline:hover{background:rgba(255,255,255,.14);color:#fff}
.cta-side{background:rgba(255,255,255,.1);border:1px solid rgba(255,255,255,.22);border-radius:var(--r-card);padding:20px 22px}
.cta-side li{display:flex;gap:10px;align-items:flex-start;font-size:14.5px;color:rgba(255,255,255,.9);padding:9px 0}
.cta-side li+li{border-top:1px solid rgba(255,255,255,.16)}
.cta-side i{color:#7FD6C7;margin-top:5px}

/* ============ 页脚 ============ */
.site-footer{background:var(--c-dark);color:rgba(255,255,255,.76);padding:56px 0 24px;margin-top:auto}
.footer-grid{display:grid;grid-template-columns:1.4fr 1fr 1fr 1.2fr;gap:32px}
@media (max-width:1023px){.footer-grid{grid-template-columns:1fr 1fr;gap:26px}}
@media (max-width:640px){.footer-grid{grid-template-columns:1fr}}
.footer-brand{display:flex;align-items:center;gap:10px;margin-bottom:14px}
.footer-brand .brand-name{color:#fff}
.footer-brand .brand-sub{color:rgba(255,255,255,.6)}
.site-footer p{font-size:14px;line-height:1.75}
.footer-title{color:#fff;font-size:15px;font-weight:700;margin-bottom:14px}
.footer-links li+li{margin-top:10px}
.footer-links a{color:rgba(255,255,255,.76);font-size:14px}
.footer-links a:hover{color:#fff}
.footer-contact li{display:flex;gap:10px;align-items:flex-start;font-size:14px;line-height:1.7}
.footer-contact li+li{margin-top:12px}
.footer-contact i{color:#7FD6C7;margin-top:5px}
.footer-legal{
  margin-top:36px;padding-top:18px;border-top:1px solid rgba(255,255,255,.14);
  display:flex;flex-wrap:wrap;justify-content:space-between;gap:10px;
  font-size:13px;color:rgba(255,255,255,.58);
}

/* roulang page: category1 */
:root{
  --c-primary:#175A9E;
  --c-primary-hover:#124A85;
  --c-primary-soft:#EAF2FA;
  --c-accent:#0F8A7E;
  --c-accent-soft:#E6F5F3;
  --c-cta:#D9480F;
  --c-cta-hover:#B93A09;
  --c-cta-soft:#FDEDE6;
  --c-bg:#F5F8FC;
  --c-surface:#FFFFFF;
  --c-ink:#14202E;
  --c-ink-2:#56687D;
  --c-line:#E3EAF2;
  --c-dark:#0E1A2B;
  --r-card:14px;
  --r-img:12px;
  --r-btn:10px;
  --r-pill:999px;
  --shadow-card:0 1px 2px rgba(20,32,46,.04), 0 8px 24px rgba(23,90,158,.08);
  --shadow-hover:0 2px 4px rgba(20,32,46,.06), 0 14px 32px rgba(23,90,158,.14);
  --sp:24px;
  --container:1200px;
}
*,*::before,*::after{box-sizing:border-box}
html{-webkit-text-size-adjust:100%;scroll-behavior:smooth}
body{
  margin:0;
  font-family:-apple-system,BlinkMacSystemFont,"PingFang SC","Microsoft YaHei","Noto Sans SC",sans-serif;
  font-size:16px;
  line-height:1.75;
  color:var(--c-ink);
  background:var(--c-bg);
  font-variant-numeric:tabular-nums;
  -webkit-font-smoothing:antialiased;
}
img{max-width:100%;display:block;height:auto}
a{color:var(--c-primary);text-decoration:none;transition:color .16s ease,background-color .16s ease}
a:hover{color:var(--c-primary-hover)}
h1,h2,h3,h4{margin:0;font-weight:650;line-height:1.35;color:var(--c-ink);letter-spacing:.2px}
p{margin:0 0 1em}
ul{margin:0;padding:0;list-style:none}
button{font-family:inherit}
:focus-visible{outline:2px solid var(--c-primary);outline-offset:2px;border-radius:6px}
.container{width:100%;max-width:var(--container);margin:0 auto;padding:0 24px}
.section{padding:84px 0}
.section-tight{padding:64px 0}
.section-head{max-width:760px;margin-bottom:40px}
.section-head h2{font-size:30px;margin-bottom:12px}
.section-head p{color:var(--c-ink-2);font-size:16px;margin:0}
.eyebrow{
  display:inline-flex;align-items:center;gap:8px;
  font-size:13px;font-weight:600;color:var(--c-primary);
  background:var(--c-primary-soft);border-radius:var(--r-pill);
  padding:5px 14px;margin-bottom:14px;
}
.eyebrow i{font-size:12px}

/* ---------- 顶部导航 ---------- */
.site-header{
  position:sticky;top:0;z-index:60;
  background:var(--c-surface);
  border-bottom:1px solid var(--c-line);
  transition:box-shadow .18s ease;
}
.site-header.is-scrolled{box-shadow:0 6px 20px rgba(20,32,46,.07)}
.nav-wrap{display:flex;align-items:center;justify-content:space-between;gap:20px;min-height:68px}
.brand{display:flex;align-items:center;gap:10px;text-decoration:none;flex-shrink:0}
.brand-mark{
  width:38px;height:38px;border-radius:11px;background:var(--c-primary);color:#fff;
  display:grid;place-items:center;font-size:20px;font-weight:700;line-height:1;
}
.brand-name{display:block;font-size:17px;font-weight:700;color:var(--c-ink);line-height:1.25}
.brand-sub{display:block;font-size:12px;color:var(--c-ink-2);line-height:1.3}
.main-nav ul{display:flex;align-items:center;gap:2px}
.main-nav a{
  position:relative;display:block;padding:10px 13px;border-radius:8px;
  font-size:15px;color:var(--c-ink);white-space:nowrap;
}
.main-nav a:hover{background:var(--c-primary-soft);color:var(--c-primary)}
.main-nav a.active{color:var(--c-primary);font-weight:650}
.main-nav a.active::after{
  content:"";position:absolute;left:13px;right:13px;bottom:3px;height:2px;
  border-radius:2px;background:var(--c-primary);
}
.nav-actions{display:flex;align-items:center;gap:12px;flex-shrink:0}
.mega{position:relative}
.mega-toggle{
  display:inline-flex;align-items:center;gap:7px;cursor:pointer;
  padding:10px 14px;font-size:15px;color:var(--c-ink);background:transparent;
  border:1px solid var(--c-line);border-radius:10px;transition:all .16s ease;
}
.mega-toggle:hover{border-color:var(--c-primary);color:var(--c-primary);background:var(--c-primary-soft)}
.mega-toggle i{font-size:11px}
.mega-panel{
  position:absolute;right:0;top:calc(100% + 14px);width:620px;
  background:var(--c-surface);border:1px solid var(--c-line);border-radius:var(--r-card);
  box-shadow:var(--shadow-hover);padding:22px;
  display:grid;grid-template-columns:1.15fr .85fr;gap:22px;
  opacity:0;visibility:hidden;transform:translateY(-6px);
  transition:opacity .16s ease,transform .16s ease,visibility .16s;
}
.mega:hover .mega-panel,.mega:focus-within .mega-panel,.mega.open .mega-panel{opacity:1;visibility:visible;transform:translateY(0)}
.mega-col-title{font-size:13px;font-weight:650;color:var(--c-ink-2);letter-spacing:1px;margin-bottom:12px}
.mega-list li+li{border-top:1px solid var(--c-line)}
.mega-list a{display:block;padding:11px 10px;border-radius:8px;font-size:15px;color:var(--c-ink);font-weight:600}
.mega-list a span{display:block;font-size:13px;font-weight:400;color:var(--c-ink-2);margin-top:3px}
.mega-list a:hover{background:var(--c-primary-soft);color:var(--c-primary)}
.mega-card{display:block;border:1px solid var(--c-line);border-radius:var(--r-card);overflow:hidden;background:var(--c-surface)}
.mega-card img{aspect-ratio:16/10;object-fit:cover;border-radius:0}
.mega-card-body{padding:14px}
.mega-card-body strong{display:block;font-size:15px;color:var(--c-ink)}
.mega-card-body span{display:block;font-size:13px;color:var(--c-ink-2);margin-top:4px}
.mega-card-body em{display:inline-flex;align-items:center;gap:6px;margin-top:10px;font-style:normal;font-size:13px;font-weight:600;color:var(--c-primary)}
.mega-card:hover{box-shadow:var(--shadow-card)}
.nav-burger{
  display:none;width:44px;height:44px;align-items:center;justify-content:center;
  border:1px solid var(--c-line);border-radius:10px;background:var(--c-surface);
  color:var(--c-ink);font-size:16px;cursor:pointer;
}
.nav-burger:hover{border-color:var(--c-primary);color:var(--c-primary)}

/* ---------- 按钮 ---------- */
.btn{
  display:inline-flex;align-items:center;justify-content:center;gap:8px;
  padding:12px 22px;border-radius:var(--r-btn);font-size:15px;font-weight:600;
  border:1px solid transparent;cursor:pointer;line-height:1.4;
  transition:background-color .16s ease,color .16s ease,border-color .16s ease,transform .16s ease,box-shadow .16s ease;
}
.btn:active{transform:translateY(1px)}
.btn-primary{background:var(--c-primary);color:#fff}
.btn-primary:hover{background:var(--c-primary-hover);color:#fff}
.btn-cta{background:var(--c-cta);color:#fff;box-shadow:0 6px 16px rgba(217,72,15,.22)}
.btn-cta:hover{background:var(--c-cta-hover);color:#fff}
.btn-ghost{background:transparent;border-color:var(--c-primary);color:var(--c-primary)}
.btn-ghost:hover{background:var(--c-primary-soft);color:var(--c-primary-hover)}
.btn-light{background:var(--c-surface);border-color:var(--c-line);color:var(--c-ink)}
.btn-light:hover{border-color:var(--c-primary);color:var(--c-primary)}
.btn-sm{padding:10px 18px;font-size:14px}
.btn-row{display:flex;flex-wrap:wrap;gap:12px}

/* ---------- 面包屑 ---------- */
.breadcrumb{padding:20px 0 0;font-size:13.5px;color:var(--c-ink-2)}
.breadcrumb ol{display:flex;flex-wrap:wrap;align-items:center;gap:8px}
.breadcrumb li{display:flex;align-items:center;gap:8px}
.breadcrumb li+li::before{content:"/";color:#B7C4D4}
.breadcrumb a{color:var(--c-ink-2)}
.breadcrumb a:hover{color:var(--c-primary)}
.breadcrumb [aria-current]{color:var(--c-ink);font-weight:600}

/* ---------- Hero ---------- */
.hero{
  position:relative;overflow:hidden;
  background:var(--c-surface);
  border-bottom:1px solid var(--c-line);
}
.hero::before{
  content:"";position:absolute;inset:0;
  background-image:url("/assets/images/backpic/back-1.png");
  background-size:cover;background-position:center right;
  opacity:.14;
}
.hero-inner{
  position:relative;display:grid;grid-template-columns:1.05fr .95fr;
  gap:56px;align-items:center;padding:64px 0 76px;
}
.hero h1{font-size:42px;line-height:1.24;margin-bottom:18px}
.hero h1 em{font-style:normal;color:var(--c-primary)}
.hero-lead{font-size:17px;color:var(--c-ink-2);max-width:560px;margin-bottom:26px}
.hero-tags{display:flex;flex-wrap:wrap;gap:10px;margin-bottom:28px}
.tag{
  display:inline-flex;align-items:center;gap:6px;
  font-size:13px;font-weight:600;color:var(--c-primary);
  background:var(--c-primary-soft);border-radius:var(--r-pill);padding:6px 13px;
}
.tag-accent{color:var(--c-accent);background:var(--c-accent-soft)}
.tag-cta{color:var(--c-cta);background:var(--c-cta-soft)}
.hero-figure{position:relative}
.hero-figure img{
  width:100%;aspect-ratio:4/3;object-fit:cover;
  border-radius:16px;box-shadow:var(--shadow-card);
}
.hero-float{
  position:absolute;left:-22px;bottom:26px;width:238px;
  background:var(--c-surface);border:1px solid var(--c-line);
  border-radius:var(--r-card);box-shadow:var(--shadow-hover);padding:16px;
}
.hero-float .fl-title{font-size:13px;color:var(--c-ink-2);margin-bottom:6px}
.hero-float .fl-value{font-size:22px;font-weight:700;color:var(--c-primary)}
.hero-float .fl-note{font-size:12.5px;color:var(--c-ink-2);margin-top:6px}
.hero-float .fl-bar{height:6px;border-radius:var(--r-pill);background:var(--c-line);margin-top:10px;overflow:hidden}
.hero-float .fl-bar span{display:block;height:100%;width:82%;background:var(--c-accent);border-radius:var(--r-pill)}

/* ---------- 速览数据条 ---------- */
.stats{
  background:var(--c-surface);border-bottom:1px solid var(--c-line);
}
.stats-grid{
  display:grid;grid-template-columns:repeat(4,1fr);
}
.stats-item{padding:30px 24px;border-left:1px solid var(--c-line)}
.stats-item:first-child{border-left:0}
.stats-num{font-size:26px;font-weight:700;color:var(--c-primary);line-height:1.2}
.stats-label{font-size:14px;color:var(--c-ink-2);margin-top:6px}

/* ---------- 图文交替 ---------- */
.feature-row{
  display:grid;grid-template-columns:1fr 1fr;gap:56px;align-items:center;
  padding:44px 0;
}
.feature-row+.feature-row{border-top:1px solid var(--c-line)}
.feature-row:nth-child(even) .feature-media{order:2}
.feature-media img{
  width:100%;aspect-ratio:16/11;object-fit:cover;
  border-radius:var(--r-img);box-shadow:var(--shadow-card);
}
.feature-body h3{font-size:22px;margin-bottom:14px}
.feature-body p{color:var(--c-ink-2)}
.feature-points{margin-top:18px}
.feature-points li{
  display:flex;gap:12px;align-items:flex-start;
  padding:10px 0;font-size:15px;color:var(--c-ink);
}
.feature-points li i{
  width:22px;height:22px;flex:0 0 22px;border-radius:var(--r-pill);
  background:var(--c-accent-soft);color:var(--c-accent);
  display:grid;place-items:center;font-size:11px;margin-top:4px;
}
.step-index{
  display:inline-flex;align-items:center;justify-content:center;
  width:32px;height:32px;border-radius:10px;background:var(--c-primary-soft);
  color:var(--c-primary);font-weight:700;font-size:15px;margin-bottom:14px;
}

/* ---------- 检查清单 ---------- */
.panel{
  background:var(--c-surface);border:1px solid var(--c-line);
  border-radius:var(--r-card);box-shadow:var(--shadow-card);padding:34px;
}
.panel-head{display:flex;flex-wrap:wrap;gap:16px;align-items:flex-end;justify-content:space-between;margin-bottom:24px}
.panel-head h2{font-size:26px}
.panel-head p{color:var(--c-ink-2);font-size:15px;margin:6px 0 0;max-width:640px}
.check-list{
  display:grid;grid-template-columns:1fr 1fr;gap:8px 32px;
}
.check-list li{
  display:flex;gap:12px;align-items:flex-start;
  padding:14px 0;border-bottom:1px solid var(--c-line);
  font-size:15px;color:var(--c-ink);
}
.check-list li i{
  color:var(--c-accent);font-size:14px;margin-top:5px;flex:0 0 auto;
}
.check-list li strong{font-weight:650}
.check-list li span{display:block;font-size:13.5px;color:var(--c-ink-2);font-weight:400;margin-top:2px}

/* ---------- 异常排查列表 ---------- */
.issue-list{border-top:1px solid var(--c-line);margin-top:8px}
.issue-item{
  display:grid;grid-template-columns:250px 1fr auto;gap:24px;align-items:center;
  padding:22px 4px;border-bottom:1px solid var(--c-line);
  transition:background-color .16s ease;
}
.issue-item:hover{background:var(--c-primary-soft)}
.issue-item h3{font-size:17px}
.issue-item p{margin:0;font-size:15px;color:var(--c-ink-2)}
.issue-badge{
  font-size:13px;font-weight:600;padding:6px 13px;border-radius:var(--r-pill);
  background:var(--c-accent-soft);color:var(--c-accent);white-space:nowrap;
}
.issue-badge.warn{background:var(--c-cta-soft);color:var(--c-cta)}

/* ---------- FAQ ---------- */
.faq-list{display:grid;gap:12px}
.faq-item{
  background:var(--c-surface);border:1px solid var(--c-line);
  border-radius:var(--r-card);overflow:hidden;transition:box-shadow .16s ease;
}
.faq-item[open]{box-shadow:var(--shadow-card);border-color:#D3E0EE}
.faq-item summary{
  position:relative;list-style:none;cursor:pointer;
  padding:20px 60px 20px 24px;font-size:16px;font-weight:650;color:var(--c-ink);
}
.faq-item summary::-webkit-details-marker{display:none}
.faq-item summary::after{
  content:"+";position:absolute;right:24px;top:50%;transform:translateY(-50%);
  font-size:20px;font-weight:400;color:var(--c-primary);line-height:1;
}
.faq-item[open] summary::after{content:"–"}
.faq-item[open] summary{border-left:3px solid var(--c-primary);padding-left:21px}
.faq-body{padding:0 24px 22px;font-size:15px;color:var(--c-ink-2);border-left:3px solid transparent}
.faq-item[open] .faq-body{border-left-color:var(--c-primary);padding-left:21px}

/* ---------- CTA ---------- */
.cta-band{
  position:relative;overflow:hidden;
  background:var(--c-primary-soft);
  border-top:1px solid var(--c-line);border-bottom:1px solid var(--c-line);
}
.cta-inner{
  position:relative;display:grid;grid-template-columns:1.2fr .8fr;
  gap:40px;align-items:center;padding:66px 0;
}
.cta-inner h2{font-size:30px;margin-bottom:14px}
.cta-inner p{color:var(--c-ink-2);max-width:560px;margin-bottom:0}
.cta-actions{display:flex;flex-wrap:wrap;align-items:center;gap:16px;justify-content:flex-end}
.cta-note{font-size:13.5px;color:var(--c-ink-2);flex-basis:100%;text-align:right}

/* ---------- 相关分类 ---------- */
.related-grid{display:grid;grid-template-columns:repeat(4,1fr);gap:24px}
.related-card{
  display:block;background:var(--c-surface);border:1px solid var(--c-line);
  border-radius:var(--r-card);padding:22px;height:100%;
  transition:transform .16s ease,box-shadow .16s ease,border-color .16s ease;
}
.related-card:hover{transform:translateY(-4px);box-shadow:var(--shadow-hover);border-color:#D3E0EE}
.related-card strong{display:block;font-size:17px;color:var(--c-ink);margin-bottom:8px}
.related-card span{display:block;font-size:14px;color:var(--c-ink-2);line-height:1.7}
.related-card .rc-more{display:inline-flex;align-items:center;gap:6px;margin-top:14px;font-size:13.5px;font-weight:600;color:var(--c-primary)}
.related-card.is-current{background:var(--c-primary-soft);border-color:#CFE0F1;cursor:default}
.related-card.is-current:hover{transform:none;box-shadow:none}
.related-card.is-current strong{color:var(--c-primary)}
.related-card .rc-flag{
  display:inline-block;font-size:12px;font-weight:600;color:var(--c-primary);
  background:#fff;border-radius:var(--r-pill);padding:4px 11px;margin-bottom:12px;
}
.related-card .rc-flag.muted{color:var(--c-ink-2);background:var(--c-bg)}

/* ---------- 页脚 ---------- */
.site-footer{background:var(--c-dark);color:#C8D4E2;padding:70px 0 26px;font-size:14.5px}
.footer-grid{display:grid;grid-template-columns:1.5fr 1fr 1fr 1.3fr;gap:44px}
.footer-brand{display:flex;align-items:center;gap:10px;margin-bottom:18px}
.footer-brand .brand-mark{background:rgba(255,255,255,.1);color:#fff}
.footer-brand .brand-name{color:#fff}
.footer-brand .brand-sub{color:#8FA3BB}
.site-footer p{color:#A9BACE;margin:0;max-width:340px}
.footer-title{font-size:15px;font-weight:650;color:#fff;margin-bottom:18px}
.footer-links li+li{margin-top:10px}
.footer-links a{color:#A9BACE}
.footer-links a:hover{color:#fff}
.footer-contact li{display:flex;gap:10px;align-items:flex-start;margin-bottom:12px;color:#A9BACE}
.footer-contact i{color:var(--c-accent);margin-top:5px;font-size:13px}
.footer-legal{
  margin-top:48px;padding-top:22px;border-top:1px solid rgba(255,255,255,.1);
  display:flex;flex-wrap:wrap;gap:10px 24px;justify-content:space-between;
  font-size:13px;color:#8FA3BB;
}

/* ---------- 滚动显现 ---------- */
.reveal{opacity:0;transform:translateY(14px);transition:opacity .4s ease,transform .4s ease}
.reveal.is-visible{opacity:1;transform:none}

/* ---------- 响应式 ---------- */
@media (max-width:1279px){
  :root{--container:1100px}
}
@media (max-width:1199px){
  .hero h1{font-size:38px}
  .mega-panel{width:560px}
}
@media (max-width:1023px){
  .section{padding:64px 0}
  .nav-burger{display:inline-flex}
  .mega{display:none}
  .main-nav{
    position:fixed;top:68px;left:0;right:0;
    background:var(--c-surface);border-bottom:1px solid var(--c-line);
    box-shadow:0 18px 32px rgba(20,32,46,.12);
    padding:14px 20px 22px;display:none;max-height:calc(100vh - 68px);overflow-y:auto;
  }
  .main-nav.open{display:block}
  .main-nav ul{flex-direction:column;align-items:stretch;gap:2px}
  .main-nav a{padding:13px 12px;font-size:16px}
  .main-nav a.active::after{left:12px;right:auto;width:22px;bottom:6px}
  .hero-inner{grid-template-columns:1fr;gap:40px;padding:46px 0 60px}
  .hero h1{font-size:34px}
  .hero-float{position:static;width:100%;margin-top:18px}
  .hero-lead{max-width:none}
  .stats-grid{grid-template-columns:1fr 1fr}
  .stats-item:nth-child(3){border-left:0}
  .stats-item:nth-child(n+3){border-top:1px solid var(--c-line)}
  .feature-row{grid-template-columns:1fr;gap:28px;padding:36px 0}
  .feature-row:nth-child(even) .feature-media{order:0}
  .check-list{grid-template-columns:1fr;gap:0}
  .issue-item{grid-template-columns:1fr;gap:10px;align-items:flex-start}
  .cta-inner{grid-template-columns:1fr;gap:26px;padding:52px 0}
  .cta-actions{justify-content:flex-start}
  .cta-note{text-align:left}
  .related-grid{grid-template-columns:1fr 1fr}
  .footer-grid{grid-template-columns:1fr 1fr;gap:34px}
}
@media (max-width:767px){
  .container{padding:0 16px}
  .section{padding:52px 0}
  .hero h1{font-size:29px}
  .hero-lead{font-size:16px}
  .section-head h2{font-size:25px}
  .panel{padding:24px 20px}
  .panel-head h2{font-size:22px}
  .feature-body h3{font-size:20px}
  .cta-inner h2{font-size:24px}
  .btn{width:auto}
}
@media (max-width:639px){
  .stats-grid{grid-template-columns:1fr}
  .stats-item{border-left:0;border-top:1px solid var(--c-line);padding:20px 4px}
  .stats-item:first-child{border-top:0}
  .related-grid{grid-template-columns:1fr}
  .footer-grid{grid-template-columns:1fr}
  .brand-sub{display:none}
  .hero-figure img{aspect-ratio:16/11}
  .hero-tags{gap:8px}
}
@media (max-width:400px){
  .hero h1{font-size:26px}
  .brand-name{font-size:16px}
}

/* roulang page: category2 */
:root{
  --c-primary:#175A9E;
  --c-primary-hover:#124A85;
  --c-primary-soft:#EAF2FA;
  --c-accent:#0F8A7E;
  --c-accent-soft:#E6F5F3;
  --c-cta:#D9480F;
  --c-cta-hover:#B93A09;
  --c-cta-soft:#FDEDE6;
  --c-bg:#F5F8FC;
  --c-surface:#FFFFFF;
  --c-ink:#14202E;
  --c-ink-2:#56687D;
  --c-line:#E3EAF2;
  --c-dark:#0E1A2B;
  --radius-card:14px;
  --radius-img:12px;
  --radius-btn:10px;
  --shadow-card:0 1px 2px rgba(20,32,46,.04), 0 8px 24px rgba(23,90,158,.08);
  --shadow-card-hover:0 2px 4px rgba(20,32,46,.06), 0 16px 36px rgba(23,90,158,.16);
  --section-gap:88px;
}

*,*::before,*::after{box-sizing:border-box;}
html{-webkit-text-size-adjust:100%;}
body{
  margin:0;
  background:var(--c-bg);
  color:var(--c-ink);
  font-family:-apple-system,BlinkMacSystemFont,"PingFang SC","Microsoft YaHei","Noto Sans SC","Hiragino Sans GB",sans-serif;
  font-size:16px;
  line-height:1.75;
  font-weight:400;
  -webkit-font-smoothing:antialiased;
}
img{max-width:100%;height:auto;display:block;border-radius:var(--radius-img);}
a{color:var(--c-primary);text-decoration:none;transition:color .16s ease,background-color .16s ease,border-color .16s ease;}
a:hover{color:var(--c-primary-hover);}
h1,h2,h3,h4,p,ul,ol,figure{margin:0;padding:0;}
ul,ol{list-style:none;}
button{font-family:inherit;}
:focus-visible{outline:2px solid var(--c-primary);outline-offset:2px;border-radius:6px;}

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

/* ---------- 导航 ---------- */
.site-header{
  position:sticky;top:0;z-index:60;
  background:var(--c-surface);
  border-bottom:1px solid var(--c-line);
  transition:box-shadow .18s ease;
}
.site-header.is-scrolled{box-shadow:0 6px 22px rgba(20,32,46,.08);}
.nav-wrap{display:flex;align-items:center;gap:22px;min-height:68px;}
.brand{display:flex;align-items:center;gap:10px;text-decoration:none;flex:0 0 auto;}
.brand-mark{
  width:38px;height:38px;border-radius:11px;
  background:var(--c-primary);color:#fff;
  display:flex;align-items:center;justify-content:center;
  font-size:20px;font-weight:700;line-height:1;flex:0 0 auto;
  box-shadow:0 6px 14px rgba(23,90,158,.28);
}
.brand-name{display:block;font-size:17px;font-weight:700;color:var(--c-ink);line-height:1.25;}
.brand-sub{display:block;font-size:12px;color:var(--c-ink-2);line-height:1.3;letter-spacing:.02em;}
.main-nav ul{display:flex;align-items:center;gap:2px;}
.main-nav a{
  position:relative;display:block;padding:9px 12px;border-radius:9px;
  font-size:15px;color:var(--c-ink-2);white-space:nowrap;
}
.main-nav a::after{
  content:"";position:absolute;left:12px;right:12px;bottom:3px;height:2px;border-radius:2px;
  background:var(--c-primary);transform:scaleX(0);transform-origin:center;transition:transform .16s ease;
}
.main-nav a:hover{color:var(--c-primary);background:var(--c-primary-soft);}
.main-nav a.active{color:var(--c-primary);font-weight:600;}
.main-nav a.active::after{transform:scaleX(1);}
.nav-actions{margin-left:auto;display:flex;align-items:center;gap:12px;}

.mega{position:relative;}
.mega-toggle{
  display:inline-flex;align-items:center;gap:7px;
  padding:9px 14px;border-radius:9px;border:1px solid var(--c-line);
  background:var(--c-surface);color:var(--c-ink);font-size:14px;font-weight:600;cursor:pointer;
  transition:border-color .16s ease,color .16s ease,background-color .16s ease;
}
.mega-toggle:hover{border-color:var(--c-primary);color:var(--c-primary);background:var(--c-primary-soft);}
.mega-toggle i{font-size:11px;transition:transform .16s ease;}
.mega-panel{
  position:absolute;right:0;top:calc(100% + 12px);width:580px;
  background:var(--c-surface);border:1px solid var(--c-line);border-radius:var(--radius-card);
  box-shadow:0 18px 44px rgba(20,32,46,.16);
  padding:20px;display:grid;grid-template-columns:1.15fr .85fr;gap:18px;
  opacity:0;visibility:hidden;transform:translateY(-6px);
  transition:opacity .16s ease,transform .16s ease,visibility .16s ease;
}
.mega:hover .mega-panel,.mega:focus-within .mega-panel,.mega.open .mega-panel{opacity:1;visibility:visible;transform:translateY(0);}
.mega:hover .mega-toggle i,.mega.open .mega-toggle i{transform:rotate(180deg);}
.mega-col-title{font-size:13px;font-weight:600;color:var(--c-ink-2);letter-spacing:.06em;margin-bottom:10px;}
.mega-list li+li{margin-top:2px;}
.mega-list a{display:block;padding:9px 10px;border-radius:9px;font-size:15px;font-weight:600;color:var(--c-ink);}
.mega-list a span{display:block;font-size:13px;font-weight:400;color:var(--c-ink-2);margin-top:2px;}
.mega-list a:hover{background:var(--c-primary-soft);color:var(--c-primary);}
.mega-card{display:block;border-radius:var(--radius-img);overflow:hidden;border:1px solid var(--c-line);background:var(--c-surface);}
.mega-card img{width:100%;aspect-ratio:16/10;object-fit:cover;border-radius:0;}
.mega-card-body{padding:12px 14px 14px;}
.mega-card-body strong{display:block;font-size:15px;color:var(--c-ink);}
.mega-card-body span{display:block;font-size:13px;color:var(--c-ink-2);margin-top:2px;}
.mega-card-body em{display:inline-flex;align-items:center;gap:6px;font-style:normal;font-size:13px;font-weight:600;color:var(--c-primary);margin-top:8px;}
.mega-card:hover{box-shadow:var(--shadow-card-hover);transform:translateY(-2px);transition:transform .16s ease,box-shadow .16s ease;}

.nav-burger{
  display:none;width:44px;height:44px;border-radius:10px;border:1px solid var(--c-line);
  background:var(--c-surface);color:var(--c-ink);font-size:17px;cursor:pointer;
}
.nav-burger:hover{border-color:var(--c-primary);color:var(--c-primary);}

/* ---------- 按钮 ---------- */
.btn{
  display:inline-flex;align-items:center;justify-content:center;gap:8px;
  padding:12px 22px;border-radius:var(--radius-btn);border:1px solid transparent;
  font-size:15px;font-weight:600;line-height:1.2;cursor:pointer;text-decoration:none;
  transition:background-color .16s ease,color .16s ease,border-color .16s ease,transform .16s ease,box-shadow .16s ease;
}
.btn-cta{background:var(--c-cta);color:#fff;box-shadow:0 8px 18px rgba(217,72,15,.24);}
.btn-cta:hover{background:var(--c-cta-hover);color:#fff;transform:translateY(-2px);box-shadow:0 12px 24px rgba(217,72,15,.3);}
.btn-cta:active{transform:translateY(0);}
.btn-primary{background:var(--c-primary);color:#fff;}
.btn-primary:hover{background:var(--c-primary-hover);color:#fff;transform:translateY(-2px);}
.btn-outline{border-color:var(--c-primary);color:var(--c-primary);background:transparent;}
.btn-outline:hover{background:var(--c-primary-soft);color:var(--c-primary-hover);}
.btn-sm{padding:10px 16px;font-size:14px;}
.btn-block{width:100%;}

/* ---------- 面包屑 ---------- */
.crumb{padding:20px 0 0;font-size:13.5px;color:var(--c-ink-2);}
.crumb ol{display:flex;flex-wrap:wrap;align-items:center;gap:8px;}
.crumb li::after{content:"/";margin-left:8px;color:#B7C4D4;}
.crumb li:last-child::after{content:"";margin:0;}
.crumb a{color:var(--c-ink-2);}
.crumb a:hover{color:var(--c-primary);}
.crumb li[aria-current]{color:var(--c-ink);font-weight:600;}

/* ---------- Hero ---------- */
.page-hero{
  position:relative;
  margin-top:20px;
  padding:56px 0 64px;
  background:url('/assets/images/backpic/back-2.png') center/cover no-repeat;
  border-bottom:1px solid var(--c-line);
  overflow:hidden;
}
.page-hero::before{
  content:"";position:absolute;inset:0;
  background:linear-gradient(100deg,rgba(245,248,252,.97) 0%,rgba(245,248,252,.93) 52%,rgba(234,242,250,.82) 100%);
}
.page-hero .container{position:relative;z-index:2;}
.hero-grid{display:grid;grid-template-columns:1.05fr .95fr;gap:48px;align-items:center;}
.eyebrow{
  display:inline-flex;align-items:center;gap:8px;
  padding:6px 14px;border-radius:999px;background:var(--c-accent-soft);color:var(--c-accent);
  font-size:13px;font-weight:600;letter-spacing:.02em;
}
.page-hero h1{
  margin-top:18px;font-size:44px;line-height:1.24;font-weight:700;letter-spacing:-.01em;color:var(--c-ink);
}
.hero-lead{margin-top:18px;font-size:17px;color:var(--c-ink-2);max-width:560px;}
.hero-actions{display:flex;flex-wrap:wrap;gap:12px;margin-top:28px;}
.hero-notes{display:flex;flex-wrap:wrap;gap:18px;margin-top:26px;font-size:14px;color:var(--c-ink-2);}
.hero-notes span{display:inline-flex;align-items:center;gap:7px;}
.hero-notes i{color:var(--c-accent);}
.hero-visual{position:relative;}
.hero-visual img{width:100%;aspect-ratio:16/11;object-fit:cover;border-radius:16px;box-shadow:0 20px 46px rgba(20,32,46,.16);}
.float-card{
  position:absolute;left:-16px;bottom:-20px;width:246px;
  background:var(--c-surface);border:1px solid var(--c-line);border-radius:var(--radius-card);
  box-shadow:var(--shadow-card);padding:16px 18px;
}
.float-card .fc-label{font-size:12.5px;color:var(--c-ink-2);}
.float-card .fc-value{font-size:26px;font-weight:700;color:var(--c-primary);font-variant-numeric:tabular-nums;line-height:1.3;}
.float-card .fc-foot{display:flex;align-items:center;gap:6px;font-size:13px;color:var(--c-accent);margin-top:4px;}

/* ---------- 数据条 ---------- */
.stat-strip{background:var(--c-surface);border-bottom:1px solid var(--c-line);}
.stat-grid{display:grid;grid-template-columns:repeat(4,1fr);}
.stat-item{padding:26px 22px;border-left:1px solid var(--c-line);}
.stat-item:first-child{border-left:0;}
.stat-num{font-size:26px;font-weight:700;color:var(--c-primary);font-variant-numeric:tabular-nums;line-height:1.3;}
.stat-num em{font-style:normal;font-size:15px;font-weight:600;color:var(--c-ink-2);margin-left:2px;}
.stat-desc{font-size:14px;color:var(--c-ink-2);margin-top:4px;}

/* ---------- 通用板块 ---------- */
.section{padding:var(--section-gap) 0;}
.section-alt{background:var(--c-surface);border-top:1px solid var(--c-line);border-bottom:1px solid var(--c-line);}
.section-head{max-width:760px;margin-bottom:44px;}
.section-tag{
  display:inline-block;padding:5px 12px;border-radius:999px;
  background:var(--c-primary-soft);color:var(--c-primary);font-size:13px;font-weight:600;
}
.section-head h2{margin-top:14px;font-size:31px;line-height:1.32;font-weight:700;letter-spacing:-.01em;}
.section-head p{margin-top:14px;font-size:16px;color:var(--c-ink-2);}

/* ---------- 步骤时间线 ---------- */
.timeline{position:relative;margin-top:8px;}
.timeline::before{
  content:"";position:absolute;left:26px;top:12px;bottom:34px;width:2px;
  background:linear-gradient(180deg,var(--c-primary) 0%,rgba(23,90,158,.12) 100%);
}
.step{position:relative;display:grid;grid-template-columns:54px 1fr;gap:24px;padding-bottom:30px;}
.step:last-child{padding-bottom:0;}
.step-num{
  position:relative;z-index:2;width:54px;height:54px;border-radius:16px;
  background:var(--c-surface);border:1px solid var(--c-line);color:var(--c-primary);
  display:flex;align-items:center;justify-content:center;
  font-size:20px;font-weight:700;font-variant-numeric:tabular-nums;
  box-shadow:var(--shadow-card);
}
.step-body{
  background:var(--c-surface);border:1px solid var(--c-line);border-radius:var(--radius-card);
  padding:22px 24px;box-shadow:var(--shadow-card);transition:transform .16s ease,box-shadow .16s ease;
}
.step-body:hover{transform:translateY(-3px);box-shadow:var(--shadow-card-hover);}
.step-body h3{font-size:20px;font-weight:600;line-height:1.4;}
.step-body p{margin-top:10px;color:var(--c-ink-2);font-size:15.5px;}
.step-meta{display:flex;flex-wrap:wrap;gap:10px;margin-top:14px;}
.tag{
  display:inline-flex;align-items:center;gap:6px;
  padding:4px 11px;border-radius:999px;font-size:12.5px;font-weight:600;
  background:var(--c-primary-soft);color:var(--c-primary);
}
.tag-accent{background:var(--c-accent-soft);color:var(--c-accent);}
.tag-cta{background:var(--c-cta-soft);color:var(--c-cta);}

/* ---------- 场景区（大图叙事 + 竖排卡片） ---------- */
.scene-grid{display:grid;grid-template-columns:1.05fr .95fr;gap:24px;align-items:stretch;}
.scene-main{
  position:relative;border-radius:var(--radius-card);overflow:hidden;
  background:var(--c-surface);border:1px solid var(--c-line);box-shadow:var(--shadow-card);
  display:flex;flex-direction:column;
}
.scene-main img{width:100%;aspect-ratio:16/10;object-fit:cover;border-radius:0;}
.scene-main-body{padding:24px 26px 26px;}
.scene-main-body h3{font-size:22px;font-weight:600;}
.scene-main-body p{margin-top:10px;color:var(--c-ink-2);font-size:15.5px;}
.scene-main-body ul{margin-top:16px;}
.scene-main-body li{position:relative;padding-left:20px;font-size:15px;color:var(--c-ink-2);}
.scene-main-body li+li{margin-top:8px;}
.scene-main-body li::before{
  content:"";position:absolute;left:0;top:11px;width:7px;height:7px;border-radius:2px;background:var(--c-accent);
}
.scene-side{display:flex;flex-direction:column;gap:24px;}
.scene-card{
  flex:1;display:grid;grid-template-columns:120px 1fr;gap:16px;
  background:var(--c-surface);border:1px solid var(--c-line);border-radius:var(--radius-card);
  padding:16px;box-shadow:var(--shadow-card);transition:transform .16s ease,box-shadow .16s ease;
}
.scene-card:hover{transform:translateY(-3px);box-shadow:var(--shadow-card-hover);}
.scene-card img{width:120px;height:100%;min-height:96px;object-fit:cover;}
.scene-card h3{font-size:18px;font-weight:600;}
.scene-card p{margin-top:7px;font-size:14.5px;color:var(--c-ink-2);}

/* ---------- 习惯对照 ---------- */
.habit-grid{display:grid;grid-template-columns:1fr 1fr;gap:24px;}
.habit-card{
  background:var(--c-surface);border:1px solid var(--c-line);border-radius:var(--radius-card);
  padding:26px 28px;box-shadow:var(--shadow-card);
}
.habit-card h3{display:flex;align-items:center;gap:10px;font-size:20px;font-weight:600;}
.habit-card h3 i{font-size:17px;}
.habit-do h3 i{color:var(--c-accent);}
.habit-avoid h3 i{color:var(--c-cta);}
.habit-card ul{margin-top:16px;}
.habit-card li{
  display:flex;gap:12px;padding:13px 0;border-top:1px solid var(--c-line);
  font-size:15.5px;color:var(--c-ink-2);
}
.habit-card li:first-child{border-top:0;}
.habit-card li i{font-size:14px;margin-top:5px;flex:0 0 auto;}
.habit-do li i{color:var(--c-accent);}
.habit-avoid li i{color:var(--c-cta);}
.habit-card li strong{color:var(--c-ink);font-weight:600;}

/* ---------- 速查清单 ---------- */
.check-list{
  background:var(--c-surface);border:1px solid var(--c-line);border-radius:var(--radius-card);
  box-shadow:var(--shadow-card);overflow:hidden;
}
.check-row{
  display:grid;grid-template-columns:200px 1fr 140px;gap:20px;align-items:center;
  padding:18px 26px;border-top:1px solid var(--c-line);
}
.check-row:first-child{border-top:0;}
.check-row:nth-child(even){background:#FBFDFF;}
.check-row dt{font-size:16px;font-weight:600;}
.check-row dd{font-size:15px;color:var(--c-ink-2);}
.check-row .tag{justify-self:end;}

/* ---------- FAQ ---------- */
.faq-wrap{max-width:920px;}
.faq-item{
  background:var(--c-surface);border:1px solid var(--c-line);border-radius:var(--radius-card);
  box-shadow:var(--shadow-card);overflow:hidden;
}
.faq-item+.faq-item{margin-top:14px;}
.faq-item summary{
  list-style:none;cursor:pointer;position:relative;
  padding:20px 58px 20px 26px;font-size:16px;font-weight:600;color:var(--c-ink);
  transition:color .16s ease,background-color .16s ease;
}
.faq-item summary::-webkit-details-marker{display:none;}
.faq-item summary:hover{color:var(--c-primary);background:var(--c-primary-soft);}
.faq-item summary::after{
  content:"+";position:absolute;right:22px;top:50%;transform:translateY(-50%);
  width:28px;height:28px;border-radius:9px;background:var(--c-primary-soft);color:var(--c-primary);
  display:flex;align-items:center;justify-content:center;font-size:18px;font-weight:600;line-height:1;
}
.faq-item[open] summary{color:var(--c-primary);}
.faq-item[open] summary::after{content:"−";background:var(--c-primary);color:#fff;}
.faq-item .faq-body{
  padding:2px 26px 22px;font-size:15.2px;color:var(--c-ink-2);
  border-left:3px solid var(--c-primary);margin-left:0;
}
.faq-item[open] .faq-body{margin-left:0;}

/* ---------- CTA ---------- */
.cta-band{
  position:relative;
  background:url('/assets/images/backpic/back-3.png') center/cover no-repeat;
  border-radius:20px;overflow:hidden;
  padding:52px 52px;
  border:1px solid var(--c-line);
}
.cta-band::before{content:"";position:absolute;inset:0;background:linear-gradient(96deg,rgba(234,242,250,.97) 0%,rgba(234,242,250,.88) 58%,rgba(255,255,255,.72) 100%);}
.cta-inner{position:relative;z-index:2;display:grid;grid-template-columns:1.25fr .75fr;gap:36px;align-items:center;}
.cta-inner h2{font-size:30px;line-height:1.32;font-weight:700;}
.cta-inner p{margin-top:14px;font-size:16px;color:var(--c-ink-2);max-width:620px;}
.cta-side{text-align:left;}
.cta-side .cta-micro{margin-top:12px;font-size:13.5px;color:var(--c-ink-2);}

/* ---------- 相关分类 ---------- */
.rel-grid{display:grid;grid-template-columns:repeat(4,1fr);gap:20px;}
.rel-card{
  display:block;background:var(--c-surface);border:1px solid var(--c-line);border-radius:var(--radius-card);
  padding:22px;box-shadow:var(--shadow-card);transition:transform .16s ease,box-shadow .16s ease,border-color .16s ease;
}
a.rel-card:hover{transform:translateY(-3px);box-shadow:var(--shadow-card-hover);border-color:var(--c-primary);}
.rel-card .rel-idx{font-size:13px;font-weight:700;color:var(--c-primary);font-variant-numeric:tabular-nums;letter-spacing:.06em;}
.rel-card h3{margin-top:8px;font-size:17.5px;font-weight:600;color:var(--c-ink);}
.rel-card p{margin-top:8px;font-size:14.2px;color:var(--c-ink-2);}
.rel-card .rel-go{margin-top:14px;font-size:13.5px;font-weight:600;color:var(--c-primary);display:inline-flex;align-items:center;gap:6px;}
.rel-card.is-current{background:var(--c-primary-soft);border-color:rgba(23,90,158,.28);}
.rel-card.is-current .rel-idx,.rel-card.is-current h3{color:var(--c-primary);}
.rel-card.is-current .rel-go{color:var(--c-ink-2);}

/* ---------- 页脚 ---------- */
.site-footer{background:var(--c-dark);color:#C7D3E2;padding:64px 0 28px;margin-top:0;}
.footer-grid{display:grid;grid-template-columns:1.4fr 1fr 1fr 1.2fr;gap:36px;}
.footer-brand{display:flex;align-items:center;gap:10px;margin-bottom:16px;}
.footer-brand .brand-name{color:#fff;}
.footer-brand .brand-sub{color:#93A6BE;}
.site-footer p{font-size:14.5px;color:#A9B9CC;line-height:1.8;}
.footer-title{font-size:15px;font-weight:600;color:#fff;margin-bottom:16px;}
.footer-links li+li{margin-top:10px;}
.footer-links a{color:#B7C6D8;font-size:14.5px;}
.footer-links a:hover{color:#fff;}
.footer-contact li{display:flex;gap:10px;font-size:14.5px;color:#A9B9CC;}
.footer-contact li+li{margin-top:12px;}
.footer-contact i{color:var(--c-accent);margin-top:5px;font-size:14px;}
.footer-legal{
  margin-top:44px;padding-top:22px;border-top:1px solid rgba(255,255,255,.12);
  display:flex;flex-wrap:wrap;gap:12px;justify-content:space-between;
  font-size:13.5px;color:#8FA2B9;
}

/* ---------- 响应式 ---------- */
@media (max-width:1120px){
  .main-nav a{padding:9px 9px;font-size:14.5px;}
  .brand-sub{display:none;}
}
@media (max-width:1023px){
  :root{--section-gap:64px;}
  .nav-burger{display:inline-flex;align-items:center;justify-content:center;}
  .mega{display:none;}
  .main-nav{
    position:absolute;left:0;right:0;top:100%;
    background:var(--c-surface);border-bottom:1px solid var(--c-line);
    box-shadow:0 18px 34px rgba(20,32,46,.12);
    padding:10px 18px 18px;display:none;
  }
  .main-nav.open{display:block;}
  .main-nav ul{flex-direction:column;align-items:stretch;gap:4px;}
  .main-nav a{padding:13px 12px;font-size:16px;border-radius:10px;}
  .main-nav a::after{display:none;}
  .main-nav a.active{background:var(--c-primary-soft);}
  .nav-actions .btn-cta{display:none;}
  .page-hero{padding:44px 0 52px;}
  .hero-grid{grid-template-columns:1fr;gap:36px;}
  .page-hero h1{font-size:36px;}
  .hero-visual img{aspect-ratio:16/10;}
  .float-card{left:auto;right:12px;bottom:-16px;width:220px;}
  .stat-grid{grid-template-columns:1fr 1fr;}
  .stat-item{padding:22px 18px;}
  .stat-item:nth-child(3){border-left:0;}
  .stat-item:nth-child(n+3){border-top:1px solid var(--c-line);}
  .scene-grid{grid-template-columns:1fr;}
  .habit-grid{grid-template-columns:1fr;}
  .check-row{grid-template-columns:1fr;gap:8px;}
  .check-row .tag{justify-self:start;}
  .cta-band{padding:40px 32px;}
  .cta-inner{grid-template-columns:1fr;gap:24px;}
  .rel-grid{grid-template-columns:1fr 1fr;}
  .footer-grid{grid-template-columns:1fr 1fr;gap:30px;}
}
@media (max-width:640px){
  :root{--section-gap:48px;}
  .container{padding-left:16px;padding-right:16px;}
  .page-hero h1{font-size:28px;}
  .hero-lead{font-size:16px;}
  .section-head h2{font-size:24px;}
  .page-hero{padding:34px 0 42px;}
  .float-card{position:static;width:100%;margin-top:16px;left:auto;right:auto;bottom:auto;}
  .hero-visual img{border-radius:14px;}
  .stat-grid{grid-template-columns:1fr;}
  .stat-item{border-left:0 !important;border-top:1px solid var(--c-line);}
  .stat-item:first-child{border-top:0;}
  .step{grid-template-columns:40px 1fr;gap:14px;}
  .timeline::before{left:19px;}
  .step-num{width:40px;height:40px;border-radius:12px;font-size:17px;}
  .step-body{padding:18px 18px;}
  .scene-card{grid-template-columns:96px 1fr;}
  .scene-card img{width:96px;}
  .check-row{padding:16px 18px;}
  .cta-band{padding:32px 20px;border-radius:16px;}
  .cta-inner h2{font-size:23px;}
  .rel-grid{grid-template-columns:1fr;}
  .footer-grid{grid-template-columns:1fr;gap:26px;}
  .footer-legal{flex-direction:column;gap:8px;}
  .faq-item summary{padding:17px 52px 17px 18px;font-size:15.5px;}
  .faq-item .faq-body{padding:0 18px 18px;}
}

/* roulang page: category3 */
:root{
  --c-primary:#175A9E;
  --c-primary-hover:#124A85;
  --c-primary-soft:#EAF2FA;
  --c-accent:#0F8A7E;
  --c-accent-soft:#E6F5F3;
  --c-cta:#D9480F;
  --c-cta-hover:#B93A09;
  --c-cta-soft:#FDEDE6;
  --c-bg:#F5F8FC;
  --c-surface:#FFFFFF;
  --c-ink:#14202E;
  --c-ink-2:#56687D;
  --c-line:#E3EAF2;
  --c-dark:#0E1A2B;
  --r-card:14px;
  --r-img:12px;
  --r-btn:10px;
  --r-input:10px;
  --shadow-card:0 1px 2px rgba(20,32,46,.04), 0 8px 24px rgba(23,90,158,.08);
  --shadow-hover:0 2px 4px rgba(20,32,46,.06), 0 16px 34px rgba(23,90,158,.14);
  --sp-section:88px;
  --font-cn:-apple-system,BlinkMacSystemFont,"PingFang SC","Hiragino Sans GB","Microsoft YaHei","Noto Sans SC",sans-serif;
}
*,*::before,*::after{box-sizing:border-box;}
html{-webkit-text-size-adjust:100%;}
body{
  margin:0;
  font-family:var(--font-cn);
  font-size:16px;
  line-height:1.75;
  color:var(--c-ink);
  background:var(--c-bg);
  font-weight:400;
  overflow-x:hidden;
}
img{max-width:100%;display:block;height:auto;border-radius:var(--r-img);}
a{color:var(--c-primary);text-decoration:none;transition:color .16s ease;}
a:hover{color:var(--c-primary-hover);}
h1,h2,h3,h4,p,ul,ol,figure{margin:0;}
ul,ol{padding:0;list-style:none;}
button{font-family:inherit;}
:focus-visible{outline:2px solid var(--c-primary);outline-offset:2px;border-radius:4px;}
.container{
  width:100%;
  max-width:1200px;
  margin:0 auto;
  padding:0 24px;
}
@media (min-width:1440px){ .container{max-width:1280px;} }

/* ---------- header ---------- */
.site-header{
  position:sticky;
  top:0;
  z-index:60;
  background:#fff;
  border-bottom:1px solid var(--c-line);
  transition:box-shadow .18s ease;
}
.site-header.is-scrolled{box-shadow:0 6px 20px rgba(20,32,46,.08);}
.nav-wrap{
  display:flex;
  align-items:center;
  gap:24px;
  min-height:68px;
}
.brand{
  display:flex;
  align-items:center;
  gap:10px;
  flex:0 0 auto;
}
.brand-mark{
  width:38px;height:38px;
  border-radius:11px;
  background:linear-gradient(140deg,var(--c-primary),#2E7CC4);
  color:#fff;
  font-size:20px;
  font-weight:700;
  display:flex;align-items:center;justify-content:center;
  line-height:1;
  box-shadow:0 6px 14px rgba(23,90,158,.24);
}
.brand-name{display:block;font-size:17px;font-weight:700;color:var(--c-ink);line-height:1.25;letter-spacing:.2px;}
.brand-sub{display:block;font-size:11.5px;color:var(--c-ink-2);line-height:1.4;}
.main-nav{margin-left:8px;}
.main-nav ul{display:flex;align-items:center;gap:4px;}
.main-nav a{
  display:inline-flex;
  align-items:center;
  height:40px;
  padding:0 13px;
  border-radius:var(--r-btn);
  font-size:15px;
  color:var(--c-ink);
  font-weight:500;
  position:relative;
}
.main-nav a:hover{background:var(--c-primary-soft);color:var(--c-primary);}
.main-nav a.active{color:var(--c-primary);font-weight:600;}
.main-nav a.active::after{
  content:"";
  position:absolute;
  left:13px;right:13px;bottom:2px;
  height:2.5px;
  border-radius:2px;
  background:var(--c-primary);
}
.nav-actions{margin-left:auto;display:flex;align-items:center;gap:12px;}
.mega{position:relative;}
.mega-toggle{
  display:inline-flex;align-items:center;gap:8px;
  height:40px;padding:0 14px;
  background:#fff;
  border:1px solid var(--c-line);
  border-radius:var(--r-btn);
  font-size:14.5px;
  color:var(--c-ink);
  font-weight:500;
  cursor:pointer;
  transition:border-color .16s ease,color .16s ease,box-shadow .16s ease;
}
.mega-toggle:hover{border-color:#C6D9EC;color:var(--c-primary);box-shadow:0 4px 12px rgba(23,90,158,.08);}
.mega-toggle i{font-size:11px;transition:transform .16s ease;}
.mega-panel{
  position:absolute;
  right:0;
  top:calc(100% + 12px);
  width:600px;
  background:#fff;
  border:1px solid var(--c-line);
  border-radius:var(--r-card);
  box-shadow:0 18px 44px rgba(20,32,46,.16);
  padding:20px;
  display:grid;
  grid-template-columns:1.15fr .85fr;
  gap:20px;
  opacity:0;
  visibility:hidden;
  transform:translateY(-6px);
  transition:opacity .16s ease,transform .16s ease,visibility .16s;
}
.mega:hover .mega-panel,
.mega.open .mega-panel{opacity:1;visibility:visible;transform:translateY(0);}
.mega:hover .mega-toggle i,
.mega.open .mega-toggle i{transform:rotate(180deg);}
.mega-col-title{font-size:12.5px;letter-spacing:.8px;color:var(--c-ink-2);font-weight:600;margin-bottom:10px;}
.mega-list li+li{border-top:1px solid var(--c-line);}
.mega-list a{
  display:block;
  padding:10px 0;
  font-size:14.5px;
  font-weight:600;
  color:var(--c-ink);
}
.mega-list a span{display:block;font-size:12.5px;font-weight:400;color:var(--c-ink-2);margin-top:2px;}
.mega-list a:hover{color:var(--c-primary);}
.mega-card{
  display:block;
  border:1px solid var(--c-line);
  border-radius:var(--r-card);
  overflow:hidden;
  background:#fff;
  transition:transform .16s ease,box-shadow .16s ease;
}
.mega-card:hover{transform:translateY(-3px);box-shadow:var(--shadow-card);}
.mega-card img{width:100%;aspect-ratio:16/10;object-fit:cover;border-radius:0;}
.mega-card-body{padding:12px 14px 14px;}
.mega-card-body strong{display:block;font-size:15px;color:var(--c-ink);}
.mega-card-body span{display:block;font-size:12.5px;color:var(--c-ink-2);margin:4px 0 8px;}
.mega-card-body em{font-style:normal;font-size:13px;color:var(--c-primary);font-weight:600;}
.mega-card-body em i{font-size:11px;margin-left:4px;}
.nav-burger{
  display:none;
  width:44px;height:44px;
  border:1px solid var(--c-line);
  border-radius:var(--r-btn);
  background:#fff;
  color:var(--c-ink);
  font-size:16px;
  cursor:pointer;
}
.nav-burger:hover{border-color:#C6D9EC;color:var(--c-primary);}

/* ---------- buttons ---------- */
.btn{
  display:inline-flex;
  align-items:center;
  justify-content:center;
  gap:8px;
  min-height:46px;
  padding:12px 22px;
  border-radius:var(--r-btn);
  font-size:15.5px;
  font-weight:600;
  border:1px solid transparent;
  cursor:pointer;
  transition:background-color .16s ease,color .16s ease,border-color .16s ease,transform .16s ease,box-shadow .16s ease;
}
.btn-sm{min-height:40px;padding:9px 16px;font-size:14.5px;}
.btn-primary{background:var(--c-primary);color:#fff;box-shadow:0 6px 16px rgba(23,90,158,.22);}
.btn-primary:hover{background:var(--c-primary-hover);color:#fff;transform:translateY(-2px);box-shadow:0 10px 22px rgba(23,90,158,.26);}
.btn-primary:active{transform:translateY(0);}
.btn-cta{background:var(--c-cta);color:#fff;box-shadow:0 6px 16px rgba(217,72,15,.24);}
.btn-cta:hover{background:var(--c-cta-hover);color:#fff;transform:translateY(-2px);box-shadow:0 10px 24px rgba(217,72,15,.3);}
.btn-cta:active{transform:translateY(0);}
.btn-ghost{background:transparent;color:var(--c-primary);border-color:#BFD5EA;}
.btn-ghost:hover{background:var(--c-primary-soft);color:var(--c-primary-hover);border-color:var(--c-primary);}
.btn-text{
  display:inline-flex;align-items:center;gap:6px;
  font-size:14.5px;font-weight:600;color:var(--c-primary);
  padding:6px 0;
}
.btn-text i{font-size:12px;transition:transform .16s ease;}
.btn-text:hover i{transform:translateX(3px);}
.btn[disabled],.btn.is-disabled{opacity:.4;cursor:not-allowed;filter:saturate(40%);}

/* ---------- breadcrumb ---------- */
.breadcrumb{
  padding:18px 0 0;
  font-size:13.5px;
  color:var(--c-ink-2);
}
.breadcrumb ol{display:flex;flex-wrap:wrap;align-items:center;gap:8px;}
.breadcrumb li{display:flex;align-items:center;gap:8px;}
.breadcrumb li+li::before{content:"/";color:#B9C7D6;}
.breadcrumb a{color:var(--c-ink-2);}
.breadcrumb a:hover{color:var(--c-primary);}
.breadcrumb .current{color:var(--c-ink);font-weight:600;}

/* ---------- hero ---------- */
.cat-hero{
  padding:36px 0 0;
}
.hero-box{
  display:grid;
  grid-template-columns:1.05fr .95fr;
  gap:40px;
  align-items:center;
  background:#fff;
  border:1px solid var(--c-line);
  border-radius:20px;
  padding:44px;
  box-shadow:var(--shadow-card);
  position:relative;
  overflow:hidden;
}
.hero-box::before{
  content:"";
  position:absolute;
  right:-90px;top:-90px;
  width:280px;height:280px;
  border-radius:50%;
  background:var(--c-primary-soft);
  opacity:.65;
}
.hero-copy{position:relative;z-index:2;}
.eyebrow{
  display:inline-flex;align-items:center;gap:8px;
  padding:6px 14px;
  border-radius:999px;
  background:var(--c-accent-soft);
  color:var(--c-accent);
  font-size:13px;
  font-weight:600;
  letter-spacing:.3px;
}
.cat-hero h1{
  font-size:42px;
  line-height:1.24;
  font-weight:700;
  letter-spacing:-.3px;
  margin:18px 0 16px;
  color:var(--c-ink);
}
.cat-hero h1 em{font-style:normal;color:var(--c-primary);}
.hero-lead{
  font-size:16.5px;
  color:var(--c-ink-2);
  max-width:560px;
}
.hero-actions{display:flex;flex-wrap:wrap;gap:12px;margin-top:26px;}
.hero-stats-inline{
  display:flex;
  flex-wrap:wrap;
  gap:24px;
  margin-top:28px;
  padding-top:22px;
  border-top:1px dashed var(--c-line);
}
.hero-stats-inline div strong{display:block;font-size:22px;color:var(--c-primary);font-variant-numeric:tabular-nums;line-height:1.3;}
.hero-stats-inline div span{font-size:13px;color:var(--c-ink-2);}
.hero-figure{position:relative;z-index:2;}
.hero-figure img{
  width:100%;
  aspect-ratio:16/11;
  object-fit:cover;
  border-radius:16px;
  box-shadow:0 18px 40px rgba(20,32,46,.16);
}
.hero-float{
  position:absolute;
  left:-16px;
  bottom:-18px;
  background:#fff;
  border:1px solid var(--c-line);
  border-radius:var(--r-card);
  padding:14px 18px;
  box-shadow:0 14px 32px rgba(20,32,46,.14);
  min-width:210px;
}
.hero-float strong{display:block;font-size:14.5px;color:var(--c-ink);}
.hero-float span{display:block;font-size:12.5px;color:var(--c-ink-2);margin-top:3px;}
.hero-float .dot-live{
  display:inline-block;width:8px;height:8px;border-radius:50%;
  background:var(--c-accent);margin-right:6px;
}

/* ---------- section base ---------- */
.section{padding:var(--sp-section) 0 0;}
.section-head{margin-bottom:30px;max-width:760px;}
.section-head .kicker{
  font-size:13px;font-weight:700;letter-spacing:1.2px;
  color:var(--c-accent);text-transform:uppercase;
}
.section-head h2{
  font-size:30px;
  line-height:1.32;
  font-weight:700;
  margin:10px 0 12px;
  letter-spacing:-.2px;
}
.section-head p{color:var(--c-ink-2);font-size:16px;}

/* ---------- 数据条 ---------- */
.stat-bar{
  margin-top:40px;
  background:#fff;
  border:1px solid var(--c-line);
  border-radius:var(--r-card);
  box-shadow:var(--shadow-card);
  display:grid;
  grid-template-columns:repeat(4,1fr);
  overflow:hidden;
}
.stat-item{
  padding:24px 22px;
  border-left:1px solid var(--c-line);
}
.stat-item:first-child{border-left:0;}
.stat-item strong{
  display:block;
  font-size:26px;
  color:var(--c-primary);
  font-variant-numeric:tabular-nums;
  line-height:1.25;
  letter-spacing:-.4px;
}
.stat-item span{display:block;font-size:13.5px;color:var(--c-ink-2);margin-top:6px;}

/* ---------- 对比表格 ---------- */
.table-card{
  background:#fff;
  border:1px solid var(--c-line);
  border-radius:var(--r-card);
  box-shadow:var(--shadow-card);
  overflow:hidden;
}
.table-scroll{overflow-x:auto;}
table.compare{
  width:100%;
  border-collapse:collapse;
  min-width:860px;
}
table.compare thead th{
  background:var(--c-primary-soft);
  color:var(--c-primary);
  font-size:14px;
  font-weight:700;
  text-align:left;
  padding:16px 20px;
  border-bottom:1px solid #D6E4F2;
  white-space:nowrap;
}
table.compare tbody td{
  padding:16px 20px;
  font-size:15px;
  color:var(--c-ink);
  border-bottom:1px solid var(--c-line);
  vertical-align:top;
  line-height:1.7;
}
table.compare tbody tr:nth-child(even){background:#FAFCFE;}
table.compare tbody tr:hover{background:var(--c-primary-soft);}
table.compare tbody tr:last-child td{border-bottom:0;}
table.compare td:first-child{font-weight:600;width:22%;}
.tag{
  display:inline-flex;align-items:center;
  padding:3px 10px;
  border-radius:999px;
  font-size:12.5px;
  font-weight:600;
  white-space:nowrap;
}
.tag-green{background:var(--c-accent-soft);color:var(--c-accent);}
.tag-blue{background:var(--c-primary-soft);color:var(--c-primary);}
.tag-cta{background:var(--c-cta-soft);color:var(--c-cta);}
.table-note{
  padding:14px 20px;
  font-size:13px;
  color:var(--c-ink-2);
  background:#FAFCFE;
  border-top:1px solid var(--c-line);
}

/* ---------- 信息卡 ---------- */
.card-grid{
  display:grid;
  grid-template-columns:repeat(3,1fr);
  gap:24px;
}
.info-card{
  background:#fff;
  border:1px solid var(--c-line);
  border-radius:var(--r-card);
  padding:26px 24px;
  box-shadow:var(--shadow-card);
  transition:transform .16s ease,box-shadow .16s ease,border-color .16s ease;
  display:flex;
  flex-direction:column;
}
.info-card:hover{transform:translateY(-4px);box-shadow:var(--shadow-hover);border-color:#D2E2F2;}
.info-icon{
  width:46px;height:46px;
  border-radius:12px;
  background:var(--c-primary-soft);
  color:var(--c-primary);
  display:flex;align-items:center;justify-content:center;
  font-size:18px;
  margin-bottom:16px;
}
.info-card h3{font-size:19px;font-weight:700;margin-bottom:10px;line-height:1.4;}
.info-card p{font-size:14.8px;color:var(--c-ink-2);}
.mini-list{margin-top:14px;border-top:1px dashed var(--c-line);padding-top:12px;}
.mini-list li{
  display:flex;gap:8px;
  font-size:14px;
  color:var(--c-ink-2);
  padding:5px 0;
}
.mini-list li::before{
  content:"";
  width:6px;height:6px;
  border-radius:2px;
  background:var(--c-accent);
  margin-top:9px;
  flex:0 0 auto;
}

/* ---------- 检查清单 ---------- */
.check-wrap{
  display:grid;
  grid-template-columns:1fr 1fr;
  gap:24px;
}
.check-col{
  background:#fff;
  border:1px solid var(--c-line);
  border-radius:var(--r-card);
  padding:26px 24px;
  box-shadow:var(--shadow-card);
}
.check-col h3{
  font-size:19px;
  font-weight:700;
  display:flex;
  align-items:center;
  gap:10px;
  margin-bottom:16px;
}
.check-col h3 i{color:var(--c-primary);font-size:17px;}
.check-list li{
  display:flex;
  gap:12px;
  padding:14px 0;
  border-top:1px solid var(--c-line);
  font-size:15px;
  color:var(--c-ink-2);
}
.check-list li:first-child{border-top:0;padding-top:0;}
.num-badge{
  flex:0 0 auto;
  width:26px;height:26px;
  border-radius:8px;
  background:var(--c-primary-soft);
  color:var(--c-primary);
  font-size:13px;
  font-weight:700;
  display:flex;align-items:center;justify-content:center;
  font-variant-numeric:tabular-nums;
}
.check-list strong{color:var(--c-ink);font-weight:600;}

/* ---------- FAQ ---------- */
.faq-list{display:grid;gap:14px;}
.faq-item{
  background:#fff;
  border:1px solid var(--c-line);
  border-radius:var(--r-card);
  box-shadow:var(--shadow-card);
  overflow:hidden;
  transition:border-color .16s ease,box-shadow .16s ease;
}
.faq-item[open]{border-color:#CFE0F1;box-shadow:var(--shadow-hover);}
.faq-item summary{
  list-style:none;
  cursor:pointer;
  padding:20px 24px;
  font-size:16.5px;
  font-weight:600;
  color:var(--c-ink);
  display:flex;
  align-items:center;
  justify-content:space-between;
  gap:16px;
  position:relative;
}
.faq-item summary::-webkit-details-marker{display:none;}
.faq-item summary::after{
  content:"+";
  flex:0 0 auto;
  width:28px;height:28px;
  border-radius:8px;
  background:var(--c-primary-soft);
  color:var(--c-primary);
  font-size:18px;
  font-weight:600;
  display:flex;align-items:center;justify-content:center;
  transition:background-color .16s ease,color .16s ease;
}
.faq-item[open] summary::after{content:"−";background:var(--c-primary);color:#fff;}
.faq-item[open] summary{color:var(--c-primary);}
.faq-item[open] summary::before{
  content:"";
  position:absolute;
  left:0;top:14px;bottom:14px;
  width:3px;
  border-radius:0 3px 3px 0;
  background:var(--c-primary);
}
.faq-body{
  padding:0 24px 22px 24px;
  font-size:15px;
  color:var(--c-ink-2);
}
.faq-body p+p{margin-top:10px;}

/* ---------- CTA ---------- */
.cta-band{
  margin-top:var(--sp-section);
  background:linear-gradient(120deg,#F2F7FD 0%,#EAF2FA 55%,#E6F5F3 100%);
  border-top:1px solid var(--c-line);
  border-bottom:1px solid var(--c-line);
}
.cta-inner{
  display:grid;
  grid-template-columns:1.35fr .65fr;
  gap:40px;
  align-items:center;
  padding:64px 0;
}
.cta-inner h2{
  font-size:30px;
  font-weight:700;
  line-height:1.34;
  margin:12px 0 12px;
}
.cta-inner p{color:var(--c-ink-2);font-size:16px;max-width:620px;}
.cta-actions{display:flex;flex-direction:column;gap:12px;align-items:flex-start;}
.cta-actions .btn{width:100%;}
.cta-hint{font-size:13px;color:var(--c-ink-2);}

/* ---------- 相关分类 ---------- */
.rel-grid{
  display:grid;
  grid-template-columns:repeat(4,1fr);
  gap:20px;
}
.rel-card{
  background:#fff;
  border:1px solid var(--c-line);
  border-radius:var(--r-card);
  padding:22px 20px;
  box-shadow:var(--shadow-card);
  transition:transform .16s ease,box-shadow .16s ease,border-color .16s ease;
  display:flex;
  flex-direction:column;
  gap:8px;
}
.rel-card:hover{transform:translateY(-4px);box-shadow:var(--shadow-hover);border-color:#D2E2F2;}
.rel-card i{color:var(--c-primary);font-size:18px;}
.rel-card strong{font-size:16.5px;color:var(--c-ink);}
.rel-card span{font-size:13.5px;color:var(--c-ink-2);}
.rel-card.current{
  background:var(--c-primary-soft);
  border-color:#CFE0F1;
  cursor:default;
}
.rel-card.current i{color:var(--c-primary);}
.rel-card.current strong{color:var(--c-primary);}
.rel-card .btn-text{margin-top:6px;}

/* ---------- footer ---------- */
.site-footer{
  margin-top:var(--sp-section);
  background:var(--c-dark);
  color:#C6D3E2;
  padding:60px 0 26px;
}
.footer-grid{
  display:grid;
  grid-template-columns:1.4fr 1fr 1fr 1.2fr;
  gap:36px;
}
.footer-brand{display:flex;align-items:center;gap:10px;margin-bottom:16px;}
.footer-brand .brand-name{color:#fff;}
.footer-brand .brand-sub{color:#8FA3B8;}
.site-footer p{font-size:14px;color:#9DB0C6;line-height:1.8;max-width:360px;}
.footer-title{
  font-size:15px;
  font-weight:700;
  color:#fff;
  margin-bottom:16px;
}
.footer-links li{margin-bottom:11px;}
.footer-links a{color:#A9BCD1;font-size:14.5px;}
.footer-links a:hover{color:#fff;}
.footer-contact li{
  display:flex;
  gap:10px;
  font-size:14px;
  color:#9DB0C6;
  margin-bottom:12px;
  line-height:1.7;
}
.footer-contact i{color:#4E9BD8;margin-top:5px;font-size:13px;}
.footer-legal{
  margin-top:40px;
  padding-top:20px;
  border-top:1px solid rgba(255,255,255,.1);
  display:flex;
  flex-wrap:wrap;
  justify-content:space-between;
  gap:10px;
  font-size:13px;
  color:#8296AB;
}

/* ---------- responsive ---------- */
@media (max-width:1023px){
  :root{--sp-section:64px;}
  .main-nav{
    display:none;
    position:absolute;
    left:0;right:0;top:100%;
    background:#fff;
    border-bottom:1px solid var(--c-line);
    box-shadow:0 16px 30px rgba(20,32,46,.12);
    padding:12px 24px 18px;
  }
  .main-nav.open{display:block;}
  .main-nav ul{flex-direction:column;align-items:stretch;gap:2px;}
  .main-nav a{height:46px;justify-content:flex-start;padding:0 12px;}
  .main-nav a.active::after{left:12px;right:auto;width:3px;height:20px;bottom:auto;top:13px;border-radius:2px;}
  .nav-burger{display:inline-flex;align-items:center;justify-content:center;}
  .mega-panel{
    position:static;
    width:100%;
    grid-template-columns:1fr;
    box-shadow:none;
    border-radius:var(--r-card);
    padding:16px;
    display:none;
    opacity:1;visibility:visible;transform:none;
  }
  .mega.open .mega-panel{display:grid;}
  .hero-box{grid-template-columns:1fr;padding:28px;gap:28px;}
  .cat-hero h1{font-size:32px;}
  .stat-bar{grid-template-columns:1fr 1fr;}
  .stat-item:nth-child(3){border-left:0;border-top:1px solid var(--c-line);}
  .stat-item:nth-child(4){border-top:1px solid var(--c-line);}
  .card-grid{grid-template-columns:1fr 1fr;}
  .check-wrap{grid-template-columns:1fr;}
  .cta-inner{grid-template-columns:1fr;padding:48px 0;gap:26px;}
  .cta-actions{max-width:340px;}
  .rel-grid{grid-template-columns:1fr 1fr;}
  .footer-grid{grid-template-columns:1fr 1fr;gap:30px;}
}
@media (max-width:639px){
  :root{--sp-section:48px;}
  .container{padding:0 16px;}
  .cat-hero h1{font-size:28px;}
  .section-head h2{font-size:24px;}
  .cta-inner h2{font-size:24px;}
  .hero-box{padding:22px;}
  .hero-float{position:static;margin-top:16px;left:auto;bottom:auto;}
  .stat-bar{grid-template-columns:1fr;}
  .stat-item{border-left:0;border-top:1px solid var(--c-line);}
  .stat-item:first-child{border-top:0;}
  .card-grid{grid-template-columns:1fr;}
  .rel-grid{grid-template-columns:1fr;}
  .footer-grid{grid-template-columns:1fr;}
  .btn{width:100%;}
  .hero-actions{flex-direction:column;}
  .hero-stats-inline{gap:18px;}
}

/* roulang page: category4 */
:root{
  --c-primary:#175A9E;
  --c-primary-hover:#124A85;
  --c-primary-soft:#EAF2FA;
  --c-accent:#0F8A7E;
  --c-accent-soft:#E6F5F3;
  --c-cta:#D9480F;
  --c-cta-hover:#B93A09;
  --c-cta-soft:#FDEDE6;
  --c-bg:#F5F8FC;
  --c-surface:#FFFFFF;
  --c-ink:#14202E;
  --c-ink-2:#56687D;
  --c-line:#E3EAF2;
  --c-dark:#0E1A2B;
  --shadow-card:0 1px 2px rgba(20,32,46,.04),0 8px 24px rgba(23,90,158,.08);
  --shadow-hover:0 2px 4px rgba(20,32,46,.06),0 16px 36px rgba(23,90,158,.14);
  --radius-card:14px;
  --radius-img:12px;
  --radius-btn:10px;
  --container:1200px;
  --font-sans:-apple-system,BlinkMacSystemFont,"PingFang SC","Microsoft YaHei","Noto Sans SC","Helvetica Neue",Arial,sans-serif;
}
*,*::before,*::after{box-sizing:border-box;}
html{-webkit-text-size-adjust:100%;}
body{
  margin:0;
  font-family:var(--font-sans);
  font-size:16px;
  line-height:1.75;
  color:var(--c-ink);
  background:var(--c-bg);
  font-variant-numeric:tabular-nums;
}
img{max-width:100%;height:auto;display:block;border-radius:var(--radius-img);}
a{color:var(--c-primary);text-decoration:none;transition:color .16s ease,background-color .16s ease,border-color .16s ease;}
a:hover{color:var(--c-primary-hover);}
a:focus-visible,button:focus-visible,summary:focus-visible,input:focus-visible{outline:2px solid var(--c-primary);outline-offset:2px;}
ul,ol{margin:0;padding:0;list-style:none;}
p{margin:0 0 1.1em;}
h1,h2,h3,h4{margin:0;font-weight:600;color:var(--c-ink);line-height:1.35;letter-spacing:.01em;}
button{font-family:inherit;font-size:inherit;cursor:pointer;background:none;border:0;color:inherit;}
.container{
  width:100%;
  max-width:var(--container);
  margin:0 auto;
  padding:0 24px;
}
.section{padding:88px 0;}
.section-tight{padding:64px 0;}
.section-head{margin-bottom:40px;max-width:760px;}
.section-head h2{font-size:30px;margin-bottom:14px;}
.section-head p{color:var(--c-ink-2);margin:0;}
.eyebrow{
  display:inline-flex;align-items:center;gap:8px;
  font-size:13px;font-weight:600;letter-spacing:.08em;
  color:var(--c-primary);
  background:var(--c-primary-soft);
  border-radius:999px;
  padding:6px 14px;
  margin-bottom:16px;
}
.tag{
  display:inline-flex;align-items:center;
  font-size:12px;font-weight:600;
  padding:3px 10px;border-radius:999px;
  background:var(--c-primary-soft);color:var(--c-primary);
}
.tag-accent{background:var(--c-accent-soft);color:var(--c-accent);}
.tag-cta{background:var(--c-cta-soft);color:var(--c-cta);}

/* ---------- 按钮 ---------- */
.btn{
  display:inline-flex;align-items:center;justify-content:center;gap:8px;
  min-height:46px;padding:12px 22px;
  border-radius:var(--radius-btn);
  font-size:15px;font-weight:600;line-height:1;
  border:1px solid transparent;
  transition:background-color .16s ease,color .16s ease,border-color .16s ease,transform .16s ease,box-shadow .16s ease;
}
.btn:active{transform:translateY(1px);}
.btn-primary{background:var(--c-primary);color:#fff;}
.btn-primary:hover{background:var(--c-primary-hover);color:#fff;box-shadow:var(--shadow-card);}
.btn-cta{background:var(--c-cta);color:#fff;}
.btn-cta:hover{background:var(--c-cta-hover);color:#fff;box-shadow:0 10px 24px rgba(217,72,15,.24);}
.btn-outline{background:transparent;color:var(--c-primary);border-color:#C6D8EA;}
.btn-outline:hover{background:var(--c-primary-soft);color:var(--c-primary-hover);border-color:var(--c-primary);}
.btn-ghost-light{background:rgba(255,255,255,.12);color:#fff;border-color:rgba(255,255,255,.6);}
.btn-ghost-light:hover{background:#fff;color:var(--c-primary);}
.btn-sm{min-height:40px;padding:10px 16px;font-size:14px;}
.btn-row{display:flex;flex-wrap:wrap;gap:12px;}

/* ---------- 顶部导航 ---------- */
.site-header{
  position:sticky;top:0;z-index:60;
  background:#fff;
  border-bottom:1px solid var(--c-line);
  transition:box-shadow .18s ease;
}
.site-header.scrolled{box-shadow:0 6px 20px rgba(20,32,46,.08);}
.nav-wrap{display:flex;align-items:center;gap:28px;height:68px;}
.brand{display:flex;align-items:center;gap:10px;flex:0 0 auto;}
.brand-mark{
  width:36px;height:36px;border-radius:10px;
  background:linear-gradient(140deg,var(--c-primary),#2C7BBF);
  color:#fff;font-weight:700;font-size:19px;
  display:flex;align-items:center;justify-content:center;
  text-transform:lowercase;
}
.brand-name{display:block;font-size:17px;font-weight:700;color:var(--c-ink);line-height:1.2;}
.brand-sub{display:block;font-size:12px;color:var(--c-ink-2);line-height:1.4;}
.main-nav{margin-left:auto;}
.main-nav ul{display:flex;align-items:center;gap:6px;}
.main-nav a{
  display:inline-flex;align-items:center;
  min-height:44px;padding:0 12px;
  font-size:15px;font-weight:500;color:var(--c-ink);
  border-radius:8px;position:relative;
}
.main-nav a:hover{color:var(--c-primary);background:var(--c-primary-soft);}
.main-nav a.active{color:var(--c-primary);font-weight:600;}
.main-nav a.active::after{
  content:"";position:absolute;left:12px;right:12px;bottom:4px;
  height:2px;border-radius:2px;background:var(--c-primary);
}
.nav-actions{display:flex;align-items:center;gap:12px;flex:0 0 auto;}
.mega{position:relative;}
.mega-toggle{
  display:inline-flex;align-items:center;gap:8px;
  min-height:44px;padding:0 16px;border-radius:10px;
  border:1px solid var(--c-line);background:#fff;
  font-size:14px;font-weight:600;color:var(--c-ink);
  transition:border-color .16s ease,color .16s ease,background-color .16s ease;
}
.mega-toggle:hover{border-color:var(--c-primary);color:var(--c-primary);background:var(--c-primary-soft);}
.mega-panel{
  position:absolute;right:0;top:calc(100% + 14px);
  width:640px;padding:24px;
  background:#fff;border:1px solid var(--c-line);border-radius:var(--radius-card);
  box-shadow:var(--shadow-hover);
  display:grid;grid-template-columns:1.15fr .85fr;gap:24px;
  opacity:0;visibility:hidden;transform:translateY(-8px);
  transition:opacity .16s ease,transform .16s ease,visibility .16s ease;
}
.mega:hover .mega-panel,.mega:focus-within .mega-panel{opacity:1;visibility:visible;transform:translateY(0);}
.mega-col-title{font-size:13px;font-weight:600;color:var(--c-ink-2);letter-spacing:.06em;margin-bottom:10px;}
.mega-list li+li{border-top:1px solid var(--c-line);}
.mega-list a{display:block;padding:11px 4px;font-size:15px;font-weight:600;color:var(--c-ink);border-radius:8px;}
.mega-list a span{display:block;font-size:13px;font-weight:400;color:var(--c-ink-2);margin-top:3px;}
.mega-list a:hover{color:var(--c-primary);background:var(--c-primary-soft);padding-left:10px;}
.mega-card{display:block;border:1px solid var(--c-line);border-radius:var(--radius-card);overflow:hidden;background:#fff;}
.mega-card img{width:100%;aspect-ratio:16/10;object-fit:cover;border-radius:0;}
.mega-card-body{padding:14px 16px 16px;}
.mega-card-body strong{display:block;font-size:15px;color:var(--c-ink);margin-bottom:4px;}
.mega-card-body span{display:block;font-size:13px;color:var(--c-ink-2);margin-bottom:10px;}
.mega-card-body em{font-style:normal;font-size:13px;font-weight:600;color:var(--c-primary);}
.mega-card:hover{border-color:#C6D8EA;box-shadow:var(--shadow-card);}
.nav-burger{
  display:none;align-items:center;justify-content:center;
  width:44px;height:44px;border:1px solid var(--c-line);border-radius:10px;
  color:var(--c-ink);font-size:17px;
}
.nav-burger:hover{border-color:var(--c-primary);color:var(--c-primary);}

/* ---------- 面包屑 ---------- */
.breadcrumb-wrap{background:#fff;border-bottom:1px solid var(--c-line);}
.breadcrumb{display:flex;flex-wrap:wrap;align-items:center;gap:8px;font-size:13px;color:var(--c-ink-2);padding:14px 0;}
.breadcrumb a{color:var(--c-ink-2);}
.breadcrumb a:hover{color:var(--c-primary);}
.breadcrumb i{font-size:10px;color:#9FB0C2;}
.breadcrumb .current{color:var(--c-ink);font-weight:600;}

/* ---------- Hero 大图 banner ---------- */
.page-hero{
  position:relative;isolation:isolate;color:#fff;
  padding:104px 0 148px;
  background-image:linear-gradient(115deg,rgba(14,26,43,.9) 0%,rgba(23,90,158,.78) 52%,rgba(15,138,126,.62) 100%),url('/assets/images/backpic/back-2.png');
  background-size:cover;background-position:center;
}
.page-hero h1{font-size:42px;color:#fff;max-width:840px;margin-bottom:20px;}
.page-hero .lead{font-size:17px;color:rgba(255,255,255,.88);max-width:720px;margin-bottom:28px;}
.hero-badges{display:flex;flex-wrap:wrap;gap:10px;margin-bottom:22px;}
.hero-badges span{
  display:inline-flex;align-items:center;gap:8px;
  font-size:13px;font-weight:600;
  padding:6px 14px;border-radius:999px;
  background:rgba(255,255,255,.14);border:1px solid rgba(255,255,255,.28);color:#fff;
}
.hero-side{
  margin-top:34px;display:grid;grid-template-columns:repeat(3,minmax(0,1fr));gap:16px;max-width:820px;
}
.hero-side div{
  background:rgba(255,255,255,.1);border:1px solid rgba(255,255,255,.22);
  border-radius:12px;padding:14px 16px;
}
.hero-side strong{display:block;font-size:15px;color:#fff;margin-bottom:4px;}
.hero-side span{font-size:13px;color:rgba(255,255,255,.82);}

/* ---------- 数据条 ---------- */
.stat-bar{
  position:relative;z-index:3;margin-top:-64px;
}
.stat-bar-inner{
  background:#fff;border:1px solid var(--c-line);border-radius:var(--radius-card);
  box-shadow:var(--shadow-card);
  display:grid;grid-template-columns:repeat(4,minmax(0,1fr));
}
.stat-item{padding:26px 24px;border-right:1px solid var(--c-line);}
.stat-item:last-child{border-right:0;}
.stat-item b{display:block;font-size:26px;font-weight:700;color:var(--c-primary);line-height:1.2;margin-bottom:6px;}
.stat-item span{font-size:14px;color:var(--c-ink-2);}
.stat-note{font-size:13px;color:var(--c-ink-2);margin-top:14px;}

/* ---------- 分组列表 ---------- */
.group-list{display:grid;gap:24px;}
.group-card{
  background:#fff;border:1px solid var(--c-line);border-radius:var(--radius-card);
  box-shadow:var(--shadow-card);
  padding:28px;display:grid;grid-template-columns:1.25fr .75fr;gap:28px;
  transition:transform .18s ease,box-shadow .18s ease;
}
.group-card:hover{transform:translateY(-4px);box-shadow:var(--shadow-hover);}
.group-index{
  display:inline-flex;align-items:center;justify-content:center;
  width:34px;height:34px;border-radius:10px;
  background:var(--c-primary-soft);color:var(--c-primary);
  font-size:15px;font-weight:700;margin-bottom:14px;
}
.group-card h3{font-size:21px;margin-bottom:10px;}
.group-card .group-desc{color:var(--c-ink-2);font-size:15px;margin-bottom:18px;}
.check-list li{
  position:relative;padding-left:26px;margin-bottom:12px;font-size:15px;color:var(--c-ink);
}
.check-list li::before{
  content:"\f00c";
  font-family:"Font Awesome 6 Free";font-weight:900;
  position:absolute;left:0;top:2px;font-size:12px;color:var(--c-accent);
}
.check-list li:last-child{margin-bottom:0;}
.group-media{border-radius:var(--radius-img);overflow:hidden;align-self:start;}
.group-media img{width:100%;aspect-ratio:16/11;object-fit:cover;}
.group-media figcaption{font-size:13px;color:var(--c-ink-2);margin-top:10px;}

/* ---------- 大图 banner ---------- */
.banner-block{
  position:relative;color:#fff;border-radius:var(--radius-card);overflow:hidden;
  padding:56px 48px;
  background-image:linear-gradient(100deg,rgba(14,26,43,.92) 0%,rgba(23,90,158,.72) 60%,rgba(23,90,158,.32) 100%),url('/assets/images/backpic/back-3.png');
  background-size:cover;background-position:center;
  box-shadow:var(--shadow-card);
}
.banner-block h2{color:#fff;font-size:30px;margin-bottom:12px;}
.banner-block p{color:rgba(255,255,255,.86);max-width:620px;margin-bottom:26px;}
.path-grid{display:grid;grid-template-columns:repeat(3,minmax(0,1fr));gap:18px;}
.path-card{
  background:rgba(255,255,255,.12);border:1px solid rgba(255,255,255,.24);
  border-radius:12px;padding:20px;
  transition:background-color .18s ease,transform .18s ease;
}
.path-card:hover{background:rgba(255,255,255,.2);transform:translateY(-4px);}
.path-card b{display:block;font-size:15px;color:#fff;margin-bottom:8px;}
.path-card span{font-size:14px;color:rgba(255,255,255,.84);display:block;}

/* ---------- 对比表格 ---------- */
.table-wrap{
  background:#fff;border:1px solid var(--c-line);border-radius:var(--radius-card);
  box-shadow:var(--shadow-card);overflow-x:auto;
}
table.compare{width:100%;border-collapse:collapse;min-width:720px;}
table.compare caption{
  text-align:left;font-size:13px;color:var(--c-ink-2);padding:18px 22px 0;
}
table.compare th,table.compare td{
  padding:16px 22px;font-size:15px;text-align:left;border-bottom:1px solid var(--c-line);
}
table.compare thead th{
  background:var(--c-primary-soft);color:var(--c-primary);font-size:14px;font-weight:600;
  white-space:nowrap;
}
table.compare tbody tr:nth-child(even){background:#FAFCFE;}
table.compare tbody tr:hover{background:var(--c-primary-soft);}
table.compare tbody td:first-child{font-weight:600;color:var(--c-ink);}
table.compare tbody tr:last-child td{border-bottom:0;}

/* ---------- 提示条 ---------- */
.notice{
  display:flex;gap:14px;align-items:flex-start;
  background:var(--c-accent-soft);border:1px solid #C9E9E4;border-radius:var(--radius-card);
  padding:20px 22px;margin-top:24px;
}
.notice i{color:var(--c-accent);font-size:17px;margin-top:4px;}
.notice p{margin:0;font-size:15px;color:#0B5F57;}

/* ---------- FAQ ---------- */
.faq-list{display:grid;gap:14px;}
.faq-item{
  background:#fff;border:1px solid var(--c-line);border-radius:var(--radius-card);
  box-shadow:var(--shadow-card);overflow:hidden;transition:border-color .16s ease;
}
.faq-item summary{
  list-style:none;cursor:pointer;
  display:flex;align-items:center;justify-content:space-between;gap:16px;
  padding:20px 24px;font-size:16px;font-weight:600;color:var(--c-ink);
}
.faq-item summary::-webkit-details-marker{display:none;}
.faq-item summary::after{
  content:"\2b";font-family:var(--font-sans);font-weight:600;font-size:20px;
  color:var(--c-primary);flex:0 0 auto;line-height:1;
}
.faq-item[open] summary::after{content:"\2212";}
.faq-item[open]{border-color:#C6D8EA;border-left:3px solid var(--c-primary);}
.faq-item summary:hover{color:var(--c-primary);}
.faq-body{padding:0 24px 22px;border-top:1px solid var(--c-line);}
.faq-body p{margin:16px 0 0;font-size:15px;color:var(--c-ink-2);}

/* ---------- CTA ---------- */
.cta-section{
  background:linear-gradient(180deg,#fff 0%,var(--c-primary-soft) 100%);
  border-top:1px solid var(--c-line);
}
.cta-card{
  background:#fff;border:1px solid var(--c-line);border-radius:var(--radius-card);
  box-shadow:var(--shadow-card);padding:44px;
  display:grid;grid-template-columns:1.3fr .7fr;gap:32px;align-items:center;
}
.cta-card h2{font-size:30px;margin-bottom:14px;}
.cta-card p{color:var(--c-ink-2);margin-bottom:24px;}
.cta-meta{display:flex;flex-wrap:wrap;gap:18px;font-size:14px;color:var(--c-ink-2);}
.cta-meta span{display:inline-flex;align-items:center;gap:8px;}
.cta-meta i{color:var(--c-accent);}
.cta-panel{
  background:var(--c-primary-soft);border:1px dashed #C6D8EA;border-radius:var(--radius-card);
  padding:24px;text-align:center;
}
.cta-panel strong{display:block;font-size:17px;color:var(--c-ink);margin-bottom:8px;}
.cta-panel span{display:block;font-size:14px;color:var(--c-ink-2);margin-bottom:18px;}
.cta-panel .btn{width:100%;}

/* ---------- 相关分类 ---------- */
.related-grid{display:grid;grid-template-columns:repeat(4,minmax(0,1fr));gap:20px;}
.related-card{
  background:#fff;border:1px solid var(--c-line);border-radius:var(--radius-card);
  box-shadow:var(--shadow-card);padding:24px;display:flex;flex-direction:column;gap:10px;
  transition:transform .18s ease,box-shadow .18s ease,border-color .18s ease;
}
.related-card:hover{transform:translateY(-4px);box-shadow:var(--shadow-hover);border-color:#C6D8EA;}
.related-card h3{font-size:18px;}
.related-card p{margin:0;font-size:14px;color:var(--c-ink-2);}
.related-card em{font-style:normal;font-size:13px;font-weight:600;color:var(--c-primary);margin-top:auto;}
.related-card.is-current{
  background:var(--c-primary-soft);border-color:#C6D8EA;cursor:default;
}
.related-card.is-current:hover{transform:none;box-shadow:var(--shadow-card);}
.related-card.is-current h3{color:var(--c-primary);}
.related-card.is-current em{color:var(--c-accent);}

/* ---------- 页脚 ---------- */
.site-footer{background:var(--c-dark);color:rgba(255,255,255,.78);padding:64px 0 28px;margin-top:0;}
.footer-grid{display:grid;grid-template-columns:1.4fr 1fr 1fr 1.2fr;gap:36px;}
.footer-brand{display:flex;align-items:center;gap:10px;margin-bottom:16px;}
.footer-brand .brand-name{color:#fff;}
.footer-brand .brand-sub{color:rgba(255,255,255,.6);}
.site-footer p{font-size:14px;color:rgba(255,255,255,.7);margin:0;}
.footer-title{font-size:15px;font-weight:600;color:#fff;margin-bottom:16px;}
.footer-links li{margin-bottom:11px;}
.footer-links a{font-size:14px;color:rgba(255,255,255,.74);}
.footer-links a:hover{color:#fff;}
.footer-contact li{display:flex;gap:10px;font-size:14px;color:rgba(255,255,255,.74);margin-bottom:12px;}
.footer-contact i{color:var(--c-accent);margin-top:4px;}
.footer-legal{
  margin-top:44px;padding-top:20px;border-top:1px solid rgba(255,255,255,.14);
  display:flex;flex-wrap:wrap;justify-content:space-between;gap:12px;
  font-size:13px;color:rgba(255,255,255,.6);
}

/* ---------- 响应式 ---------- */
@media (max-width:1279px){
  .mega-panel{width:560px;}
}
@media (max-width:1023px){
  .section{padding:64px 0;}
  .nav-wrap{gap:14px;}
  .nav-burger{display:inline-flex;}
  .main-nav{
    position:fixed;left:0;right:0;top:68px;
    background:#fff;border-bottom:1px solid var(--c-line);
    box-shadow:var(--shadow-hover);
    padding:12px 20px 22px;display:none;max-height:calc(100vh - 68px);overflow-y:auto;
  }
  .main-nav.open{display:block;}
  .main-nav ul{flex-direction:column;align-items:stretch;gap:2px;}
  .main-nav a{min-height:48px;padding:0 14px;font-size:16px;justify-content:space-between;}
  .main-nav a.active::after{left:14px;right:auto;bottom:12px;width:22px;}
  .mega{display:none;}
  .page-hero{padding:72px 0 120px;}
  .page-hero h1{font-size:32px;}
  .hero-side{grid-template-columns:1fr 1fr;}
  .stat-bar-inner{grid-template-columns:1fr 1fr;}
  .stat-item{border-right:0;border-bottom:1px solid var(--c-line);}
  .stat-item:nth-child(odd){border-right:1px solid var(--c-line);}
  .stat-item:nth-last-child(-n+2){border-bottom:0;}
  .group-card{grid-template-columns:1fr;}
  .group-media{order:-1;}
  .path-grid{grid-template-columns:1fr;}
  .cta-card{grid-template-columns:1fr;padding:32px;}
  .related-grid{grid-template-columns:1fr 1fr;}
  .footer-grid{grid-template-columns:1fr 1fr;}
}
@media (max-width:639px){
  .container{padding:0 16px;}
  .section{padding:48px 0;}
  .section-head h2{font-size:24px;}
  .brand-sub{display:none;}
  .page-hero{padding:56px 0 104px;}
  .page-hero h1{font-size:28px;}
  .page-hero .lead{font-size:16px;}
  .hero-side{grid-template-columns:1fr;}
  .stat-bar-inner{grid-template-columns:1fr;}
  .stat-item{border-right:0 !important;border-bottom:1px solid var(--c-line);}
  .stat-item:last-child{border-bottom:0;}
  .banner-block{padding:36px 22px;}
  .banner-block h2{font-size:23px;}
  .group-card{padding:22px;}
  .faq-item summary{padding:16px 18px;font-size:15px;}
  .faq-body{padding:0 18px 18px;}
  .cta-card{padding:26px 20px;}
  .cta-card h2{font-size:23px;}
  .related-grid{grid-template-columns:1fr;}
  .footer-grid{grid-template-columns:1fr;gap:28px;}
  .footer-legal{flex-direction:column;}
}