/* roulang page: index */
:root{
  --brand:#1E4ED8;
  --brand-dark:#16389E;
  --brand-light:#EEF3FE;
  --accent:#FF6A2B;
  --ink:#1A2233;
  --muted:#5A6B85;
  --disabled:#A7B2C2;
  --line:#E3E9F2;
  --surface:#FFFFFF;
  --surface-alt:#F7F9FC;
  --dark:#0F2340;
  --r-card:14px;
  --r-img:12px;
  --r-btn:10px;
  --r-pill:999px;
  --s1:0 1px 2px rgba(16,24,40,.06);
  --s2:0 8px 24px rgba(23,43,99,.08);
  --s3:0 14px 36px rgba(23,43,99,.14);
  --t:.22s ease;
}
*,*::before,*::after{box-sizing:border-box;}
html{-webkit-text-size-adjust:100%;scroll-behavior:smooth;}
body{
  margin:0;
  font-family:system-ui,"PingFang SC","Microsoft YaHei","Noto Sans SC",sans-serif;
  font-size:16px;
  line-height:1.75;
  color:var(--ink);
  background:var(--surface);
  font-variant-numeric:tabular-nums;
}
h1,h2,h3,h4,h5,p,figure{margin:0;}
img{max-width:100%;display:block;border:0;}
a{color:var(--brand);text-decoration:none;transition:color var(--t),background-color var(--t),border-color var(--t);}
a:hover{color:var(--brand-dark);}
ul,ol{margin:0;padding:0;list-style:none;}
button,input{font-family:inherit;font-size:inherit;color:inherit;}
button{cursor:pointer;}
input{outline:none;}
time{font-variant-numeric:tabular-nums;}
:focus-visible{outline:2px solid var(--brand);outline-offset:2px;}

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

/* ============ 导航 ============ */
.site-header{
  position:sticky;top:0;z-index:80;
  background:#fff;
  border-bottom:1px solid var(--line);
  box-shadow:0 1px 2px rgba(16,24,40,.04);
}
.header-inner{display:flex;align-items:center;gap:20px;height:64px;}
.logo{display:inline-flex;align-items:center;gap:10px;flex:0 0 auto;color:var(--ink);}
.logo-mark{
  display:inline-flex;align-items:center;justify-content:center;
  width:30px;height:30px;border-radius:9px;background:var(--brand-light);flex:0 0 auto;
}
.logo-text{font-size:17px;font-weight:600;letter-spacing:.2px;white-space:nowrap;color:var(--ink);}
.main-nav{display:flex;align-items:center;gap:4px;flex:1 1 auto;}
.nav-link{
  position:relative;display:inline-flex;align-items:center;
  height:64px;padding:0 12px;font-size:15px;font-weight:500;color:var(--ink);
}
.nav-link::after{
  content:"";position:absolute;left:12px;right:12px;bottom:0;height:2px;
  background:var(--brand);border-radius:2px;
  transform:scaleX(0);transform-origin:left;transition:transform var(--t);
}
.nav-link:hover{color:var(--brand);}
.nav-link:hover::after,.nav-link.is-active::after{transform:scaleX(1);}
.nav-link.is-active{color:var(--brand);font-weight:600;}
.header-tools{display:flex;align-items:center;gap:12px;margin-left:auto;}
.search-box{
  position:relative;display:flex;align-items:center;gap:8px;
  width:220px;height:40px;padding:0 12px;
  border:1px solid var(--line);border-radius:var(--r-btn);
  background:var(--surface-alt);
  transition:border-color var(--t),box-shadow var(--t),background var(--t);
}
.search-box:focus-within{border-color:var(--brand);background:#fff;box-shadow:0 0 0 3px rgba(30,78,216,.12);}
.search-box i{color:var(--muted);font-size:13px;}
.search-box input{flex:1;min-width:0;height:100%;border:0;background:transparent;font-size:14px;}
.search-box input::placeholder{color:var(--disabled);}
.menu-toggle{
  display:none;flex-direction:column;align-items:center;justify-content:center;gap:4px;
  width:42px;height:42px;padding:0;background:#fff;
  border:1px solid var(--line);border-radius:var(--r-btn);
}
.menu-toggle span{display:block;width:18px;height:2px;border-radius:2px;background:var(--ink);transition:all var(--t);}
.menu-toggle[aria-expanded="true"] span:nth-child(1){transform:translateY(6px) rotate(45deg);}
.menu-toggle[aria-expanded="true"] span:nth-child(2){opacity:0;}
.menu-toggle[aria-expanded="true"] span:nth-child(3){transform:translateY(-6px) rotate(-45deg);}

/* ============ 按钮 ============ */
.btn{
  display:inline-flex;align-items:center;justify-content:center;gap:8px;
  min-height:44px;padding:0 22px;
  border:1px solid transparent;border-radius:var(--r-btn);
  font-size:15px;font-weight:600;line-height:1;white-space:nowrap;
  transition:all var(--t);
}
.btn-sm{min-height:40px;padding:0 18px;font-size:14px;}
.btn-primary{background:var(--brand);color:#fff;}
.btn-primary:hover{background:var(--brand-dark);color:#fff;transform:translateY(-2px);box-shadow:var(--s2);}
.btn-outline{border-color:var(--brand);color:var(--brand);background:transparent;}
.btn-outline:hover{background:var(--brand-light);color:var(--brand-dark);}
.btn-ghost{background:transparent;color:var(--brand);}
.btn-ghost:hover{background:#F1F5FB;color:var(--brand-dark);}
.btn-accent{background:var(--accent);color:#fff;}
.btn-accent:hover{background:#EA5A19;color:#fff;transform:translateY(-2px);box-shadow:var(--s2);}
.btn:active{transform:translateY(0);}

/* ============ 徽章与标签 ============ */
.badge{
  display:inline-flex;align-items:center;gap:4px;
  font-size:12px;font-weight:600;line-height:1;
  padding:5px 10px;border-radius:var(--r-pill);
  background:var(--brand-light);color:var(--brand);
}
.badge-accent{background:#FFF1E9;color:var(--accent);}
.tag{
  display:inline-flex;align-items:center;
  font-size:13px;color:var(--muted);
  background:var(--surface-alt);
  border:1px solid var(--line);
  border-radius:var(--r-pill);
  padding:5px 12px;transition:all var(--t);
}
.tag:hover{color:var(--brand);border-color:#C9D8F7;background:var(--brand-light);}

/* ============ Hero ============ */
.hero{
  position:relative;overflow:hidden;
  background:var(--surface-alt);
  border-bottom:1px solid var(--line);
}
.hero-grid{
  display:grid;grid-template-columns:1fr 1fr;
  gap:48px;align-items:center;
  padding-top:72px;padding-bottom:72px;min-height:500px;
}
.eyebrow{
  display:inline-flex;align-items:center;gap:8px;
  font-size:13px;font-weight:600;color:var(--brand);
  background:var(--brand-light);border-radius:var(--r-pill);
  padding:6px 14px;margin-bottom:18px;
}
.hero h1{
  font-size:38px;line-height:1.3;font-weight:700;letter-spacing:-.2px;
  margin-bottom:16px;
}
.hero-sub{font-size:17px;color:var(--muted);max-width:470px;margin-bottom:28px;}
.hero-actions{display:flex;flex-wrap:wrap;gap:12px;margin-bottom:34px;}
.hero-facts{display:flex;flex-wrap:wrap;gap:34px;}
.hero-facts li{display:flex;flex-direction:column;gap:2px;}
.hero-facts strong{font-size:22px;font-weight:700;color:var(--brand);line-height:1.2;}
.hero-facts span{font-size:13px;color:var(--muted);}
.hero-visual{position:relative;}
.hero-visual img{
  width:100%;aspect-ratio:3/2;object-fit:cover;
  border-radius:var(--r-img);box-shadow:var(--s2);
}
.hero-arc{
  position:absolute;right:-46px;bottom:-46px;
  width:220px;height:220px;border-radius:50%;
  border:6px solid rgba(30,78,216,.08);
  pointer-events:none;
}

/* ============ 板块通用 ============ */
.section{padding:72px 0;}
.section-alt{background:var(--surface-alt);}
.section-head{
  display:flex;align-items:flex-end;justify-content:space-between;
  gap:24px;margin-bottom:28px;
}
.section-head h2{
  position:relative;padding-left:14px;
  font-size:26px;font-weight:700;line-height:1.35;
}
.section-head h2::before{
  content:"";position:absolute;left:0;top:6px;bottom:6px;width:4px;
  border-radius:2px;background:var(--brand);
}
.section-head p{margin-top:8px;font-size:15px;color:var(--muted);max-width:640px;}
.link-more{font-size:14px;font-weight:600;color:var(--brand);white-space:nowrap;padding-bottom:6px;}
.link-more:hover{color:var(--brand-dark);}
.link-more i{font-size:12px;}

/* ============ 专题合集封面卡 ============ */
.collection-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:24px;}
.collection-card{
  display:flex;flex-direction:column;height:100%;
  background:#fff;border:1px solid var(--line);
  border-radius:var(--r-card);overflow:hidden;
  box-shadow:var(--s1);color:var(--ink);
  transition:transform var(--t),box-shadow var(--t),border-color var(--t);
}
.collection-card:hover{transform:translateY(-3px);box-shadow:var(--s3);border-color:#D5DEEE;color:var(--ink);}
.collection-cover{position:relative;aspect-ratio:16/10;background:var(--brand-light);overflow:hidden;}
.collection-cover img{width:100%;height:100%;object-fit:cover;transition:transform .4s ease;}
.collection-card:hover .collection-cover img{transform:scale(1.04);}
.collection-count{
  position:absolute;left:12px;top:12px;
  background:rgba(255,255,255,.94);color:var(--brand);
  font-size:12px;font-weight:600;line-height:1;
  padding:6px 11px;border-radius:var(--r-pill);
}
.collection-body{padding:20px;display:flex;flex-direction:column;gap:8px;flex:1 1 auto;}
.collection-body h3{font-size:19px;font-weight:600;color:var(--ink);line-height:1.4;}
.collection-body p{font-size:14px;color:var(--muted);line-height:1.7;}
.collection-body time{margin-top:auto;font-size:13px;color:var(--disabled);}

/* ============ 精选条目 + 侧栏 ============ */
.featured-grid{display:grid;grid-template-columns:2fr 1fr;gap:32px;align-items:start;}
.entry-list{display:flex;flex-direction:column;gap:16px;}
.entry-item{
  display:grid;grid-template-columns:160px 1fr;gap:18px;
  background:#fff;border:1px solid var(--line);
  border-radius:var(--r-card);padding:16px;
  box-shadow:var(--s1);color:var(--ink);
  transition:transform var(--t),box-shadow var(--t),border-color var(--t);
}
.entry-item:hover{transform:translateY(-3px);box-shadow:var(--s3);border-color:#D5DEEE;color:var(--ink);}
.entry-thumb{aspect-ratio:4/3;border-radius:var(--r-img);overflow:hidden;background:var(--brand-light);}
.entry-thumb img{width:100%;height:100%;object-fit:cover;}
.entry-text{display:flex;flex-direction:column;gap:8px;min-width:0;}
.entry-text h3{
  font-size:17px;font-weight:600;color:var(--ink);line-height:1.5;
  display:-webkit-box;-webkit-line-clamp:2;-webkit-box-orient:vertical;overflow:hidden;
}
.entry-text p{
  font-size:14px;color:var(--muted);line-height:1.7;
  display:-webkit-box;-webkit-line-clamp:2;-webkit-box-orient:vertical;overflow:hidden;
}
.entry-foot{margin-top:auto;display:flex;align-items:center;justify-content:space-between;gap:12px;}
.entry-foot time{font-size:13px;color:var(--disabled);}
.arrow{color:var(--brand);font-weight:700;transition:transform var(--t);}
.entry-item:hover .arrow,.latest-item:hover .arrow{transform:translateX(4px);}

.featured-side{position:sticky;top:84px;display:flex;flex-direction:column;gap:20px;}
.side-card{
  background:#fff;border:1px solid var(--line);
  border-radius:var(--r-card);padding:20px;box-shadow:var(--s1);
}
.side-card h4{font-size:16px;font-weight:600;margin-bottom:14px;line-height:1.4;}
.side-card.is-brand{background:var(--brand-light);border-color:#D6E2FB;}
.side-card.is-brand p{font-size:14px;color:var(--muted);margin-bottom:16px;line-height:1.7;}
.index-list li{
  display:flex;align-items:baseline;gap:10px;
  padding:9px 0;border-bottom:1px dashed #E9EEF7;
}
.index-list li:last-child{border-bottom:0;padding-bottom:0;}
.index-list .num{font-size:12px;font-weight:700;color:var(--accent);flex:0 0 auto;}
.index-list a{font-size:14px;color:var(--ink);line-height:1.6;}
.index-list a:hover{color:var(--brand);}
.tag-cloud{display:flex;flex-wrap:wrap;gap:8px;}

/* ============ 最新信息 ============ */
.latest-list{display:grid;gap:14px;}
.latest-item{
  display:flex;align-items:center;gap:20px;
  background:#fff;border:1px solid var(--line);
  border-radius:var(--r-card);padding:18px 22px;
  box-shadow:var(--s1);color:var(--ink);
  transition:transform var(--t),box-shadow var(--t),border-color var(--t);
}
.latest-item:hover{transform:translateY(-3px);box-shadow:var(--s3);border-color:#D5DEEE;color:var(--ink);}
.latest-body{display:flex;flex-direction:column;gap:8px;flex:1 1 auto;min-width:0;}
.latest-body h3{font-size:17px;font-weight:600;color:var(--ink);line-height:1.5;}
.latest-body p{
  font-size:14px;color:var(--muted);line-height:1.7;
  display:-webkit-box;-webkit-line-clamp:2;-webkit-box-orient:vertical;overflow:hidden;
}
.latest-meta{display:flex;align-items:center;gap:14px;flex:0 0 auto;}
.latest-meta time{font-size:13px;color:var(--disabled);white-space:nowrap;}
.empty-state{
  display:flex;flex-direction:column;align-items:center;gap:12px;
  padding:52px 24px;text-align:center;
  background:#fff;border:1px dashed #D5DEEE;border-radius:var(--r-card);
}
.empty-state i{font-size:26px;color:var(--brand);}
.empty-state p{font-size:15px;color:var(--muted);}

/* ============ 相关推荐横滑 ============ */
.rec-scroller{
  display:grid;grid-auto-flow:column;grid-auto-columns:minmax(268px,1fr);
  gap:20px;overflow-x:auto;padding:4px 4px 12px;
  scrollbar-width:none;-ms-overflow-style:none;
}
.rec-scroller::-webkit-scrollbar{display:none;}
.rec-card{
  display:flex;flex-direction:column;
  background:#fff;border:1px solid var(--line);
  border-radius:var(--r-card);overflow:hidden;
  box-shadow:var(--s1);color:var(--ink);
  transition:transform var(--t),box-shadow var(--t),border-color var(--t);
}
.rec-card:hover{transform:translateY(-3px);box-shadow:var(--s3);border-color:#D5DEEE;color:var(--ink);}
.rec-cover{aspect-ratio:16/10;background:var(--brand-light);overflow:hidden;}
.rec-cover img{width:100%;height:100%;object-fit:cover;}
.rec-body{padding:16px;display:flex;flex-direction:column;gap:8px;flex:1 1 auto;}
.rec-body h3{font-size:16px;font-weight:600;color:var(--ink);line-height:1.5;}
.rec-body p{font-size:13px;color:var(--muted);line-height:1.7;}

/* ============ CTA 条 ============ */
.cta-band{
  display:flex;align-items:center;justify-content:space-between;gap:28px;
  background:var(--brand-light);border:1px solid #DCE7FD;
  border-radius:16px;padding:36px 40px;
}
.cta-band h3{font-size:22px;font-weight:700;margin-bottom:8px;line-height:1.4;}
.cta-band p{font-size:15px;color:var(--muted);max-width:640px;}
.cta-actions{display:flex;gap:12px;flex:0 0 auto;}

/* ============ FAQ ============ */
.faq-grid{display:grid;grid-template-columns:1fr 1fr;gap:16px;align-items:start;}
.faq-item{
  background:#fff;border:1px solid var(--line);
  border-radius:var(--r-card);box-shadow:var(--s1);overflow:hidden;
  transition:box-shadow var(--t),border-color var(--t);
}
.faq-item:hover{box-shadow:var(--s2);border-color:#D5DEEE;}
.faq-item summary{
  display:flex;align-items:center;justify-content:space-between;gap:16px;
  padding:18px 20px;font-size:16px;font-weight:600;line-height:1.5;
  cursor:pointer;list-style:none;
}
.faq-item summary::-webkit-details-marker{display:none;}
.faq-item summary .chev{color:var(--brand);flex:0 0 auto;transition:transform .2s ease;}
.faq-item[open] summary .chev{transform:rotate(180deg);}
.faq-item[open] summary{color:var(--brand);}
.faq-body{
  padding:16px 20px 20px;font-size:15px;color:var(--muted);
  line-height:1.8;background:var(--surface-alt);border-top:1px solid var(--line);
}

/* ============ 页脚 ============ */
.site-footer{background:var(--dark);color:#fff;padding-top:56px;}
.footer-grid{display:grid;grid-template-columns:1.5fr 1fr 1fr 1fr;gap:32px;padding-bottom:40px;}
.footer-brand .logo-text{color:#fff;}
.footer-brand .logo-mark{background:rgba(255,255,255,.1);}
.footer-brand p{margin-top:16px;font-size:14px;color:#B9C6DC;line-height:1.8;max-width:320px;}
.site-footer h4{font-size:15px;font-weight:600;color:#fff;margin-bottom:16px;}
.footer-links li{margin-bottom:10px;}
.footer-links a{font-size:14px;color:#B9C6DC;}
.footer-links a:hover{color:#fff;}
.footer-note{font-size:14px;color:#B9C6DC;line-height:1.8;}
.footer-bottom{
  display:flex;align-items:center;justify-content:space-between;gap:16px;flex-wrap:wrap;
  border-top:1px solid rgba(255,255,255,.12);
  padding:20px 0 26px;font-size:13px;color:#8FA0BC;
}

/* ============ 响应式 ============ */
@media (max-width:1024px){
  .menu-toggle{display:flex;}
  .search-box{display:none;}
  .main-nav{
    position:absolute;left:0;right:0;top:64px;
    display:none;flex-direction:column;align-items:stretch;gap:0;
    background:#fff;border-bottom:1px solid var(--line);
    box-shadow:0 12px 24px rgba(23,43,99,.1);
    padding:6px 24px 14px;
  }
  .main-nav.is-open{display:flex;}
  .nav-link{height:auto;padding:14px 0;border-bottom:1px solid var(--line);}
  .nav-link::after{display:none;}
  .nav-link:last-child{border-bottom:0;}
  .hero-grid{grid-template-columns:1fr;gap:36px;padding-top:52px;padding-bottom:52px;min-height:auto;}
  .section{padding:56px 0;}
  .collection-grid{grid-template-columns:repeat(2,1fr);}
  .featured-grid{grid-template-columns:1fr;}
  .featured-side{position:static;}
  .footer-grid{grid-template-columns:1fr 1fr;}
}
@media (max-width:768px){
  .hero h1{font-size:29px;}
  .hero-sub{font-size:16px;}
  .section-head{flex-direction:column;align-items:flex-start;gap:12px;}
  .faq-grid{grid-template-columns:1fr;}
  .cta-band{flex-direction:column;align-items:flex-start;padding:28px 24px;}
  .latest-item{flex-direction:column;align-items:flex-start;gap:14px;}
  .latest-meta{width:100%;justify-content:space-between;}
}
@media (max-width:640px){
  .container{padding:0 16px;}
  .section{padding:40px 0;}
  .header-inner{height:60px;}
  .main-nav{top:60px;}
  .logo-text{font-size:15px;}
  .hero h1{font-size:25px;}
  .hero-actions{width:100%;}
  .hero-actions .btn{width:100%;}
  .hero-facts{gap:20px;}
  .collection-grid{grid-template-columns:1fr;}
  .collection-body{padding:16px;}
  .entry-item{grid-template-columns:1fr;padding:14px;}
  .entry-thumb{aspect-ratio:16/9;}
  .cta-actions{flex-direction:column;width:100%;}
  .cta-actions .btn{width:100%;}
  .rec-scroller{grid-auto-columns:80%;}
  .footer-grid{grid-template-columns:1fr;gap:26px;}
}
@media (max-width:480px){
  .hero h1{font-size:22px;}
  .section-head h2{font-size:21px;}
  .cta-band h3{font-size:19px;}
}

/* roulang page: article */
:root{
  --brand:#1E4ED8;
  --brand-dark:#16389E;
  --brand-soft:#EEF3FE;
  --accent:#FF6A2B;
  --ink:#1A2233;
  --muted:#5A6B85;
  --disabled:#A7B2C2;
  --line:#E3E9F2;
  --bg:#FFFFFF;
  --bg-soft:#F7F9FC;
  --dark:#0F2340;
  --r-card:14px;
  --r-img:12px;
  --r-btn:10px;
  --s1:0 1px 2px rgba(16,24,40,.06);
  --s2:0 8px 24px rgba(23,43,99,.08);
  --s3:0 14px 36px rgba(23,43,99,.14);
  --t:.22s ease;
}
*,*::before,*::after{box-sizing:border-box;}
html{-webkit-text-size-adjust:100%;}
body{
  margin:0;
  background:var(--bg);
  color:var(--ink);
  font-family:system-ui,"PingFang SC","Microsoft YaHei","Noto Sans SC",sans-serif;
  font-size:16px;
  line-height:1.75;
  font-variant-numeric:tabular-nums;
}
img{max-width:100%;display:block;}
a{color:var(--brand);text-decoration:none;transition:color var(--t);}
a:hover{color:var(--brand-dark);}
ul,ol{margin:0;padding:0;list-style:none;}
h1,h2,h3,h4{margin:0;font-weight:700;line-height:1.35;letter-spacing:.2px;}
p{margin:0;}
button,input{font-family:inherit;font-size:inherit;}
:focus-visible{outline:2px solid var(--brand);outline-offset:2px;border-radius:4px;}

.container{width:100%;max-width:1160px;margin:0 auto;padding:0 20px;}

/* ---------- 顶部导航 ---------- */
.site-header{
  position:sticky;top:0;z-index:60;
  background:#fff;
  border-bottom:1px solid var(--line);
  box-shadow:var(--s1);
}
.header-inner{
  display:flex;align-items:center;gap:24px;
  min-height:64px;
}
.logo{display:flex;align-items:center;gap:10px;flex:0 0 auto;}
.logo-mark{
  width:24px;height:24px;border-radius:8px;
  background:var(--brand);
  display:inline-flex;align-items:center;justify-content:center;
  flex:0 0 auto;
}
.logo-text{font-size:17px;font-weight:600;color:var(--ink);white-space:nowrap;}
.logo:hover .logo-text{color:var(--brand);}

.main-nav{display:flex;align-items:center;gap:6px;margin-left:8px;}
.nav-link{
  position:relative;
  display:inline-block;
  padding:10px 12px;
  font-size:15px;font-weight:500;color:var(--ink);
  border-radius:8px;
}
.nav-link::after{
  content:"";position:absolute;left:12px;right:12px;bottom:4px;height:2px;
  background:var(--brand);transform:scaleX(0);transform-origin:left;
  transition:transform var(--t);
}
.nav-link:hover{color:var(--brand);background:#F9FBFF;}
.nav-link:hover::after{transform:scaleX(1);}
.nav-link.is-active{color:var(--brand);}
.nav-link.is-active::after{transform:scaleX(1);}

.header-tools{display:flex;align-items:center;gap:12px;margin-left:auto;}
.nav-search{position:relative;}
.nav-search input{
  height:40px;width:212px;
  border:1px solid var(--line);border-radius:10px;
  background:#fff;color:var(--ink);
  padding:0 38px 0 14px;font-size:14px;
  transition:border-color var(--t),box-shadow var(--t);
}
.nav-search input::placeholder{color:var(--disabled);}
.nav-search input:focus{
  outline:none;border-color:var(--brand);
  box-shadow:0 0 0 3px rgba(30,78,216,.14);
}
.nav-search .search-icon{
  position:absolute;right:13px;top:50%;transform:translateY(-50%);
  color:var(--disabled);font-size:14px;pointer-events:none;
}
.btn{
  display:inline-flex;align-items:center;justify-content:center;gap:8px;
  min-height:44px;padding:0 20px;
  border:1px solid transparent;border-radius:var(--r-btn);
  font-size:15px;font-weight:600;cursor:pointer;
  transition:background var(--t),color var(--t),box-shadow var(--t),transform var(--t),border-color var(--t);
}
.btn-primary{background:var(--brand);color:#fff;box-shadow:var(--s1);}
.btn-primary:hover{background:var(--brand-dark);color:#fff;box-shadow:var(--s2);transform:translateY(-2px);}
.btn-outline{background:#fff;color:var(--brand);border-color:var(--brand);}
.btn-outline:hover{background:var(--brand-soft);color:var(--brand-dark);transform:translateY(-2px);}
.btn-ghost{background:transparent;color:var(--brand);}
.btn-ghost:hover{background:#F1F5FB;color:var(--brand-dark);}
.btn-accent{background:var(--accent);color:#fff;}
.btn-accent:hover{background:#E85A1D;color:#fff;transform:translateY(-2px);box-shadow:var(--s2);}
.btn-sm{min-height:40px;padding:0 18px;font-size:14px;}
.btn[disabled],.btn.is-disabled{opacity:.5;cursor:not-allowed;transform:none;box-shadow:none;}

.nav-toggle{
  display:none;margin-left:auto;
  width:44px;height:44px;border:1px solid var(--line);border-radius:10px;
  background:#fff;color:var(--ink);cursor:pointer;
}

/* ---------- 面包屑 ---------- */
.crumb-bar{background:var(--bg-soft);border-bottom:1px solid var(--line);}
.breadcrumb{
  display:flex;flex-wrap:wrap;align-items:center;gap:8px;
  padding:14px 0;font-size:14px;color:var(--muted);
}
.breadcrumb li{display:flex;align-items:center;gap:8px;min-width:0;}
.breadcrumb li+li::before{content:"/";color:var(--disabled);}
.breadcrumb a{color:var(--muted);}
.breadcrumb a:hover{color:var(--brand);}
.breadcrumb .current{color:var(--ink);max-width:340px;overflow:hidden;text-overflow:ellipsis;white-space:nowrap;}

/* ---------- 布局 ---------- */
.page-main{padding:40px 0 72px;}
.layout{display:grid;grid-template-columns:minmax(0,1fr);gap:32px;}
.article-col{min-width:0;}
.side-col{min-width:0;}

/* ---------- 文章头部 ---------- */
.article-head{padding-bottom:20px;border-bottom:1px solid var(--line);}
.head-tags{display:flex;flex-wrap:wrap;align-items:center;gap:10px;margin-bottom:14px;}
.badge{
  display:inline-flex;align-items:center;gap:6px;
  padding:4px 12px;border-radius:999px;
  background:var(--brand-soft);color:var(--brand);
  font-size:12px;font-weight:600;line-height:1.6;
}
.badge-accent{background:#FFF1E9;color:#D9521A;}
.article-title{
  font-size:34px;line-height:1.32;font-weight:700;color:var(--ink);
  max-width:22em;
}
.article-lead{
  margin-top:14px;font-size:17px;line-height:1.75;color:var(--muted);max-width:44em;
}
.article-meta{
  display:flex;flex-wrap:wrap;align-items:center;gap:16px;
  margin-top:18px;font-size:14px;color:var(--muted);
}
.article-meta .dot{width:4px;height:4px;border-radius:50%;background:var(--disabled);}
.meta-actions{margin-left:auto;display:flex;align-items:center;gap:8px;}
.icon-btn{
  width:38px;height:38px;border-radius:10px;border:1px solid var(--line);
  background:#fff;color:var(--muted);cursor:pointer;
  display:inline-flex;align-items:center;justify-content:center;
  transition:all var(--t);
}
.icon-btn:hover{color:var(--brand);border-color:var(--brand);background:var(--brand-soft);}

/* ---------- 正文 ---------- */
.article-body{margin-top:28px;font-size:16px;line-height:1.8;color:#222B3D;max-width:760px;}
.article-body p{margin:0 0 18px;}
.article-body h2{
  position:relative;
  margin:40px 0 16px;padding-left:14px;
  font-size:24px;font-weight:700;color:var(--ink);
}
.article-body h2::before{
  content:"";position:absolute;left:0;top:6px;bottom:6px;width:4px;
  background:var(--brand);border-radius:4px;
}
.article-body h3{margin:28px 0 12px;font-size:18px;font-weight:600;color:var(--ink);}
.article-body strong{font-weight:600;color:var(--ink);}
.article-body img{border-radius:var(--r-img);margin:22px auto;height:auto;}
.article-body blockquote{
  margin:22px 0;padding:16px 20px;
  background:var(--bg-soft);border-left:3px solid var(--brand);
  border-radius:0 10px 10px 0;color:var(--muted);
}
.article-body blockquote p:last-child{margin-bottom:0;}
.article-body ul,.article-body ol{margin:0 0 18px;padding-left:22px;}
.article-body ul{list-style:disc;}
.article-body ol{list-style:decimal;}
.article-body li{margin-bottom:8px;line-height:1.8;}
.article-body table{width:100%;border-collapse:collapse;font-size:15px;min-width:520px;}
.article-body .table-wrap{overflow-x:auto;margin:22px 0;border:1px solid var(--line);border-radius:var(--r-img);}
.article-body th,.article-body td{padding:12px 14px;border-bottom:1px solid var(--line);text-align:left;}
.article-body th{background:var(--bg-soft);font-weight:600;color:var(--ink);white-space:nowrap;}
.article-body tr:last-child td{border-bottom:none;}
.article-body figcaption{margin-top:8px;font-size:13px;color:var(--muted);text-align:center;}
.article-body a{border-bottom:1px solid rgba(30,78,216,.35);}

.tag-row{display:flex;flex-wrap:wrap;gap:10px;margin-top:36px;}
.tag-pill{
  display:inline-flex;align-items:center;gap:6px;
  padding:7px 14px;border-radius:999px;
  background:var(--bg-soft);border:1px solid var(--line);
  font-size:13px;color:var(--muted);
  transition:all var(--t);
}
.tag-pill:hover{border-color:var(--brand);color:var(--brand);background:var(--brand-soft);}

.empty-state{
  margin-top:28px;padding:44px 24px;text-align:center;
  background:var(--bg-soft);border:1px dashed var(--line);border-radius:var(--r-card);
}
.empty-state i{font-size:28px;color:var(--brand);}
.empty-state h2{margin:14px 0 8px;font-size:20px;}
.empty-state p{color:var(--muted);font-size:15px;margin-bottom:18px;}

/* ---------- 侧栏 ---------- */
.side-card{
  background:#fff;border:1px solid var(--line);border-radius:var(--r-card);
  padding:20px;box-shadow:var(--s1);margin-bottom:20px;
}
.side-card h4{font-size:16px;font-weight:600;margin-bottom:14px;color:var(--ink);}
.side-list li+li{margin-top:10px;padding-top:10px;border-top:1px dashed var(--line);}
.side-list a{display:flex;gap:10px;align-items:flex-start;font-size:14px;color:var(--muted);line-height:1.6;}
.side-list a:hover{color:var(--brand);}
.side-list .no{
  flex:0 0 auto;width:22px;height:22px;border-radius:6px;
  background:var(--brand-soft);color:var(--brand);
  font-size:12px;font-weight:700;
  display:inline-flex;align-items:center;justify-content:center;
}
.side-tags{display:flex;flex-wrap:wrap;gap:8px;}
.side-tags a{
  padding:5px 11px;border-radius:999px;font-size:13px;
  background:var(--bg-soft);color:var(--muted);border:1px solid var(--line);
}
.side-tags a:hover{color:var(--brand);border-color:var(--brand);background:var(--brand-soft);}
.side-sub{background:var(--dark);border:none;color:#fff;}
.side-sub h4{color:#fff;}
.side-sub p{font-size:14px;color:#B9C6DC;margin-bottom:14px;}
.side-sub .btn{width:100%;}

/* ---------- 通用板块 ---------- */
.section{padding:64px 0;}
.section-soft{background:var(--bg-soft);}
.section-head{display:flex;align-items:flex-end;justify-content:space-between;gap:20px;margin-bottom:26px;}
.section-head h2{font-size:26px;color:var(--ink);}
.section-head p{margin-top:8px;font-size:15px;color:var(--muted);}
.link-more{font-size:14px;font-weight:600;white-space:nowrap;}

/* ---------- 卡片 ---------- */
.card-grid{display:grid;gap:24px;grid-template-columns:repeat(3,minmax(0,1fr));}
.card{
  display:flex;flex-direction:column;height:100%;
  background:#fff;border:1px solid var(--line);border-radius:var(--r-card);
  box-shadow:var(--s1);overflow:hidden;
  transition:transform var(--t),box-shadow var(--t),border-color var(--t);
}
.card:hover{transform:translateY(-3px);box-shadow:var(--s3);border-color:#D6E0F5;}
.card-media{position:relative;aspect-ratio:16/10;background:var(--brand-soft);overflow:hidden;}
.card-media img{width:100%;height:100%;object-fit:cover;transition:transform .3s ease;}
.card:hover .card-media img{transform:scale(1.04);}
.card-media .cover-badge{
  position:absolute;left:12px;top:12px;
  padding:4px 10px;border-radius:999px;
  background:rgba(15,35,64,.78);color:#fff;font-size:12px;font-weight:600;
}
.card-body{padding:20px;display:flex;flex-direction:column;gap:10px;flex:1;}
.card-body h3{
  font-size:18px;line-height:1.5;color:var(--ink);
  display:-webkit-box;-webkit-line-clamp:2;-webkit-box-orient:vertical;overflow:hidden;
}
.card-body p{
  font-size:14px;line-height:1.7;color:var(--muted);
  display:-webkit-box;-webkit-line-clamp:2;-webkit-box-orient:vertical;overflow:hidden;
}
.card-foot{margin-top:auto;display:flex;align-items:center;justify-content:space-between;gap:10px;font-size:13px;color:var(--muted);}
.card-foot .go{color:var(--brand);font-weight:600;}

/* ---------- 相关推荐横滑 ---------- */
.scroll-row{
  display:grid;grid-auto-flow:column;grid-auto-columns:minmax(260px,1fr);
  gap:20px;overflow-x:auto;padding:4px 24px 18px 0;
  scrollbar-width:none;
}
.scroll-row::-webkit-scrollbar{display:none;}
.mini-card{
  background:#fff;border:1px solid var(--line);border-radius:var(--r-card);
  overflow:hidden;box-shadow:var(--s1);
  transition:transform var(--t),box-shadow var(--t);
}
.mini-card:hover{transform:translateY(-3px);box-shadow:var(--s3);}
.mini-card .card-media{aspect-ratio:16/9;}
.mini-card .mini-body{padding:16px;}
.mini-card h3{font-size:16px;line-height:1.5;color:var(--ink);margin-bottom:8px;}

/* ---------- CTA 条 ---------- */
.cta-band{
  display:flex;align-items:center;justify-content:space-between;gap:24px;
  background:var(--brand-soft);border-radius:16px;padding:32px;
}
.cta-band h3{font-size:22px;color:var(--ink);}
.cta-band p{margin-top:8px;font-size:15px;color:var(--muted);}
.cta-actions{display:flex;gap:12px;flex:0 0 auto;}

/* ---------- FAQ ---------- */
.faq-wrap{display:grid;grid-template-columns:repeat(2,minmax(0,1fr));gap:20px;}
.faq-item{
  background:#fff;border:1px solid var(--line);border-radius:var(--r-card);
  padding:0 20px;box-shadow:var(--s1);
}
.faq-item 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(--ink);
}
.faq-item summary::-webkit-details-marker{display:none;}
.faq-item summary i{color:var(--brand);font-size:16px;transition:transform var(--t);}
.faq-item[open] summary i{transform:rotate(180deg);}
.faq-item .faq-panel{
  padding:0 0 18px;font-size:15px;line-height:1.8;color:var(--muted);
  border-top:1px solid var(--line);padding-top:14px;margin-bottom:0;
}

/* ---------- 页脚 ---------- */
.site-footer{background:var(--dark);color:#fff;margin-top:0;padding:56px 0 26px;}
.footer-grid{display:grid;grid-template-columns:1.6fr 1fr 1fr 1.4fr;gap:32px;}
.footer-brand .logo-text{color:#fff;}
.footer-brand .logo-mark{background:var(--brand);}
.footer-brand p{margin-top:14px;font-size:14px;line-height:1.8;color:#B9C6DC;}
.site-footer h4{font-size:15px;font-weight:600;color:#fff;margin-bottom:14px;}
.footer-links li+li{margin-top:9px;}
.footer-links a{font-size:15px;color:#B9C6DC;}
.footer-links a:hover{color:#fff;}
.footer-note{font-size:14px;line-height:1.8;color:#B9C6DC;}
.footer-bottom{
  display:flex;flex-wrap:wrap;align-items:center;justify-content:space-between;gap:12px;
  margin-top:36px;padding-top:20px;border-top:1px solid rgba(255,255,255,.12);
  font-size:13px;color:#8FA0BC;
}

/* ---------- 响应式 ---------- */
@media (min-width:1200px){
  .layout{grid-template-columns:minmax(0,1fr) 300px;gap:40px;}
  .side-col{position:sticky;top:84px;align-self:start;}
}
@media (max-width:1024px){
  .main-nav{
    display:none;position:absolute;left:0;right:0;top:100%;
    flex-direction:column;align-items:stretch;gap:2px;
    background:#fff;border-bottom:1px solid var(--line);
    box-shadow:var(--s2);padding:10px 20px 16px;
  }
  .main-nav.is-open{display:flex;}
  .nav-link::after{display:none;}
  .nav-link{padding:12px 8px;border-radius:10px;}
  .nav-link:hover,.nav-link.is-active{background:var(--brand-soft);}
  .nav-toggle{display:inline-flex;align-items:center;justify-content:center;}
  .nav-search{display:none;}
  .header-inner{flex-wrap:wrap;}
  .section{padding:56px 0;}
  .card-grid{grid-template-columns:repeat(2,minmax(0,1fr));}
  .footer-grid{grid-template-columns:repeat(2,minmax(0,1fr));gap:28px;}
}
@media (max-width:768px){
  .article-title{font-size:28px;}
  .article-lead{font-size:16px;}
  .article-body{font-size:15px;}
  .section-head{flex-direction:column;align-items:flex-start;}
  .faq-wrap{grid-template-columns:minmax(0,1fr);}
  .cta-band{flex-direction:column;align-items:flex-start;}
  .cta-actions{width:100%;flex-wrap:wrap;}
}
@media (max-width:640px){
  .container{padding:0 16px;}
  .header-tools .btn{display:none;}
  .card-grid{grid-template-columns:minmax(0,1fr);}
  .card-body{padding:16px;}
  .article-title{font-size:26px;}
  .article-body h2{font-size:21px;}
  .page-main{padding:28px 0 56px;}
  .section{padding:40px 0;}
  .cta-actions .btn{width:100%;}
  .footer-grid{grid-template-columns:minmax(0,1fr);gap:24px;}
  .meta-actions{margin-left:0;width:100%;}
}
@media (max-width:480px){
  .article-title{font-size:24px;}
  .breadcrumb .current{max-width:180px;}
  .scroll-row{grid-auto-columns:minmax(220px,1fr);}
}

/* roulang page: category1 */
:root{
  --brand:#1E4ED8;
  --brand-dark:#16389E;
  --brand-light:#EEF3FE;
  --accent:#FF6A2B;
  --ink:#1A2233;
  --muted:#5A6B85;
  --disabled:#A7B2C2;
  --line:#E3E9F2;
  --surface:#F7F9FC;
  --deep:#0F2340;
  --r-card:14px;
  --r-img:12px;
  --r-btn:10px;
  --r-pill:999px;
  --s1:0 1px 2px rgba(16,24,40,.06);
  --s2:0 8px 24px rgba(23,43,99,.08);
  --s3:0 14px 36px rgba(23,43,99,.14);
  --sec-pad:72px;
  --font: system-ui,-apple-system,"PingFang SC","Microsoft YaHei","Noto Sans SC",sans-serif;
}
*{box-sizing:border-box;}
html{-webkit-text-size-adjust:100%;}
body{
  margin:0;padding:0;background:#fff;color:var(--ink);
  font-family:var(--font);font-size:16px;line-height:1.8;
  -webkit-font-smoothing:antialiased;
}
img{max-width:100%;display:block;border:0;}
a{color:var(--brand);text-decoration:none;transition:color .2s ease;}
a:hover{color:var(--brand-dark);}
h1,h2,h3,h4{margin:0;font-weight:600;line-height:1.35;color:var(--ink);letter-spacing:.2px;}
p{margin:0;}
ul,ol{margin:0;padding:0;list-style:none;}
button{font-family:inherit;}
input,button,select,textarea{font-family:inherit;font-size:16px;}
:focus-visible{outline:2px solid var(--brand);outline-offset:2px;border-radius:6px;}

.container{width:100%;max-width:1200px;margin:0 auto;padding:0 24px;}
.sec{padding:var(--sec-pad) 0;}
.sec-alt{background:var(--surface);}
.sec-head{display:flex;flex-wrap:wrap;align-items:flex-end;justify-content:space-between;gap:16px;margin-bottom:32px;}
.sec-head h2{font-size:26px;position:relative;padding-left:14px;}
.sec-head h2::before{content:"";position:absolute;left:0;top:6px;bottom:6px;width:4px;border-radius:3px;background:var(--brand);}
.sec-head p{color:var(--muted);font-size:15px;margin-top:10px;}
.sec-head .sec-more{font-size:14px;font-weight:500;white-space:nowrap;}

/* ============ 导航 ============ */
.site-header{
  position:sticky;top:0;z-index:60;background:#fff;
  border-bottom:1px solid var(--line);box-shadow:var(--s1);
  transition:box-shadow .22s ease;
}
.site-header.is-stuck{box-shadow:var(--s2);}
.header-inner{display:flex;align-items:center;gap:24px;height:64px;}
.logo{display:flex;align-items:center;gap:10px;flex:0 0 auto;}
.logo-mark{
  width:32px;height:32px;border-radius:9px;background:var(--brand);
  display:flex;align-items:center;justify-content:center;flex:0 0 auto;
}
.logo-text{font-size:17px;font-weight:600;color:var(--ink);white-space:nowrap;}
.main-nav{display:flex;align-items:center;gap:26px;margin-left:8px;flex:1 1 auto;}
.nav-link{
  position:relative;font-size:15px;font-weight:500;color:var(--ink);
  padding:6px 0;white-space:nowrap;
}
.nav-link::after{
  content:"";position:absolute;left:0;bottom:0;height:2px;width:0;
  background:var(--brand);transition:width .22s ease;
}
.nav-link:hover{color:var(--brand);}
.nav-link:hover::after{width:100%;}
.nav-link.is-active{color:var(--brand);}
.nav-link.is-active::after{width:100%;}
.nav-cta{display:none;}
.header-actions{display:flex;align-items:center;gap:12px;flex:0 0 auto;}
.search-box{position:relative;width:220px;}
.search-box input{
  width:100%;height:40px;border:1px solid var(--line);border-radius:var(--r-btn);
  padding:0 42px 0 14px;background:var(--surface);color:var(--ink);font-size:14px;
  transition:border-color .2s ease,box-shadow .2s ease,background .2s ease;
}
.search-box input::placeholder{color:var(--disabled);}
.search-box input:focus{
  outline:none;background:#fff;border-color:var(--brand);
  box-shadow:0 0 0 3px rgba(30,78,216,.14);
}
.search-box button{
  position:absolute;right:4px;top:4px;width:32px;height:32px;border:0;border-radius:8px;
  background:transparent;color:var(--muted);cursor:pointer;transition:background .2s ease,color .2s ease;
}
.search-box button:hover{background:var(--brand-light);color:var(--brand);}
.nav-toggle{
  display:none;width:42px;height:42px;border:1px solid var(--line);border-radius:var(--r-btn);
  background:#fff;cursor:pointer;padding:0;
}
.nav-toggle span{display:block;width:18px;height:2px;background:var(--ink);margin:3px auto;border-radius:2px;transition:transform .2s ease,opacity .2s ease;}

/* ============ 按钮 ============ */
.btn{
  display:inline-flex;align-items:center;justify-content:center;gap:8px;
  min-height:44px;padding:0 22px;border-radius:var(--r-btn);border:1px solid transparent;
  font-size:15px;font-weight:600;cursor:pointer;text-align:center;
  transition:background .22s ease,color .22s ease,box-shadow .22s ease,transform .22s ease,border-color .22s ease;
}
.btn-primary{background:var(--brand);color:#fff;}
.btn-primary:hover{background:var(--brand-dark);color:#fff;box-shadow:var(--s2);transform:translateY(-3px);}
.btn-outline{background:#fff;border-color:var(--brand);color:var(--brand);}
.btn-outline:hover{background:var(--brand-light);color:var(--brand-dark);transform:translateY(-3px);}
.btn-ghost{background:transparent;color:var(--brand);}
.btn-ghost:hover{background:#F1F5FB;color:var(--brand-dark);}
.btn-accent{background:var(--accent);color:#fff;}
.btn-accent:hover{background:#E85C1F;color:#fff;transform:translateY(-3px);box-shadow:var(--s2);}
.btn-sm{min-height:40px;padding:0 18px;font-size:14px;}
.btn-block{width:100%;}
.btn[disabled],.btn.is-disabled{opacity:.5;cursor:not-allowed;transform:none;box-shadow:none;}

/* ============ 通用元素 ============ */
.badge{
  display:inline-flex;align-items:center;gap:6px;height:26px;padding:0 12px;
  border-radius:var(--r-pill);background:var(--brand-light);color:var(--brand);
  font-size:12px;font-weight:600;letter-spacing:.4px;
}
.badge-accent{background:#FFF1E9;color:#C74D13;}
.badge-muted{background:#F1F4F9;color:var(--muted);}
.pill{
  display:inline-flex;align-items:center;gap:8px;min-height:38px;padding:0 18px;
  border-radius:var(--r-pill);border:1px solid var(--line);background:#fff;
  font-size:14px;font-weight:500;color:var(--ink);transition:all .2s ease;
}
.pill:hover{border-color:var(--brand);color:var(--brand);background:var(--brand-light);transform:translateY(-2px);}
.num{font-variant-numeric:tabular-nums;}

/* ============ Hero ============ */
.hero{
  position:relative;overflow:hidden;background:var(--surface);
  padding:56px 0 64px;border-bottom:1px solid var(--line);
}
.hero::after{
  content:"";position:absolute;right:-90px;bottom:-140px;width:430px;height:430px;
  border:6px solid rgba(30,78,216,.08);border-radius:50%;pointer-events:none;
}
.hero-grid{display:grid;grid-template-columns:1fr 1fr;gap:48px;align-items:center;position:relative;z-index:1;}
.crumbs{display:flex;flex-wrap:wrap;align-items:center;gap:8px;font-size:14px;color:var(--muted);margin-bottom:18px;}
.crumbs a{color:var(--muted);}
.crumbs a:hover{color:var(--brand);}
.crumbs .sep{color:var(--disabled);}
.hero h1{font-size:36px;font-weight:700;margin:14px 0 18px;letter-spacing:.3px;}
.hero-lead{font-size:17px;color:var(--muted);max-width:520px;}
.hero-meta{display:flex;flex-wrap:wrap;gap:10px;margin:24px 0 26px;}
.hero-cta{display:flex;flex-wrap:wrap;gap:12px;}
.hero-figure{position:relative;}
.hero-figure .frame{
  position:relative;border-radius:16px;overflow:hidden;box-shadow:var(--s2);
  aspect-ratio:4/3;background:var(--brand-light);
}
.hero-figure img{width:100%;height:100%;object-fit:cover;}

/* ============ 数据条 ============ */
.stats{display:grid;grid-template-columns:repeat(3,1fr);gap:16px;margin-top:34px;}
.stat{
  background:#fff;border:1px solid var(--line);border-radius:var(--r-card);
  padding:18px 20px;box-shadow:var(--s1);
}
.stat-num{font-size:26px;font-weight:700;color:var(--brand);line-height:1.2;}
.stat-label{font-size:13px;color:var(--muted);margin-top:4px;}

/* ============ 卡片 ============ */
.card{
  background:#fff;border:1px solid var(--line);border-radius:var(--r-card);
  box-shadow:var(--s1);transition:box-shadow .22s ease,transform .22s ease,border-color .22s ease;
  overflow:hidden;height:100%;
}
.card:hover{box-shadow:var(--s3);transform:translateY(-3px);border-color:#D6E0F0;}
.card-body{padding:20px;}
.card h3{font-size:18px;margin-bottom:10px;}
.card p{font-size:14px;color:var(--muted);}
.cover{
  position:relative;aspect-ratio:16/10;background:var(--brand-light);overflow:hidden;
}
.cover img{width:100%;height:100%;object-fit:cover;transition:transform .3s ease;}
.card:hover .cover img{transform:scale(1.04);}
.card-index{
  position:absolute;left:12px;top:12px;z-index:2;
  display:inline-flex;align-items:center;justify-content:center;
  min-width:34px;height:26px;padding:0 10px;border-radius:var(--r-pill);
  background:var(--accent);color:#fff;font-size:12px;font-weight:700;
  font-variant-numeric:tabular-nums;letter-spacing:.6px;
}
.card-tags{display:flex;flex-wrap:wrap;gap:8px;margin-top:14px;}
.tag{
  display:inline-flex;align-items:center;height:24px;padding:0 10px;border-radius:var(--r-pill);
  background:var(--surface);color:var(--muted);font-size:12px;font-weight:500;
}
.grid-3{display:grid;grid-template-columns:repeat(3,1fr);gap:24px;}
.grid-4{display:grid;grid-template-columns:repeat(4,1fr);gap:24px;}
.grid-2{display:grid;grid-template-columns:repeat(2,1fr);gap:24px;}

/* 卖点卡 */
.feature{padding:24px 22px;border-radius:var(--r-card);background:#fff;border:1px solid var(--line);box-shadow:var(--s1);transition:box-shadow .22s ease,transform .22s ease;}
.feature:hover{box-shadow:var(--s3);transform:translateY(-3px);}
.feature .ico{
  width:42px;height:42px;border-radius:12px;background:var(--brand-light);color:var(--brand);
  display:flex;align-items:center;justify-content:center;font-size:18px;margin-bottom:16px;
}
.feature h3{font-size:18px;margin-bottom:8px;}
.feature p{font-size:14px;color:var(--muted);}

/* 流程步骤 */
.steps{display:grid;grid-template-columns:repeat(4,1fr);gap:20px;counter-reset:step;}
.step{
  position:relative;background:#fff;border:1px solid var(--line);border-radius:var(--r-card);
  padding:26px 20px 22px;box-shadow:var(--s1);
}
.step::before{
  counter-increment:step;content:counter(step,decimal-leading-zero);
  position:absolute;top:-14px;left:20px;
  display:inline-flex;align-items:center;justify-content:center;height:28px;padding:0 12px;
  border-radius:var(--r-pill);background:var(--brand);color:#fff;
  font-size:12px;font-weight:700;letter-spacing:.8px;font-variant-numeric:tabular-nums;
}
.step h3{font-size:17px;margin:12px 0 8px;}
.step p{font-size:14px;color:var(--muted);}

/* 横向条目流 */
.flow{display:flex;flex-direction:column;gap:14px;}
.flow-item{
  display:flex;gap:18px;align-items:flex-start;background:#fff;
  border:1px solid var(--line);border-radius:var(--r-card);padding:20px;
  box-shadow:var(--s1);transition:box-shadow .22s ease,transform .22s ease;
}
.flow-item:hover{box-shadow:var(--s3);transform:translateY(-3px);}
.flow-item .bar{width:3px;align-self:stretch;border-radius:3px;background:var(--brand);flex:0 0 auto;}
.flow-item h3{font-size:17px;margin-bottom:6px;}
.flow-item p{font-size:14px;color:var(--muted);}
.flow-item .badge{margin-top:12px;}

/* ============ FAQ ============ */
.faq-grid{display:grid;grid-template-columns:repeat(2,1fr);gap:16px;}
.faq-item{
  background:#fff;border:1px solid var(--line);border-radius:var(--r-card);
  box-shadow:var(--s1);overflow:hidden;transition:box-shadow .2s ease;
}
.faq-item:hover{box-shadow:var(--s2);}
.faq-item summary{
  list-style:none;cursor:pointer;padding:18px 54px 18px 20px;position:relative;
  font-size:16px;font-weight:600;color:var(--ink);
}
.faq-item summary::-webkit-details-marker{display:none;}
.faq-item summary::after{
  content:"\f078";font-family:"Font Awesome 6 Free";font-weight:900;
  position:absolute;right:20px;top:50%;transform:translateY(-50%);
  font-size:13px;color:var(--brand);transition:transform .2s ease;
}
.faq-item[open] summary::after{transform:translateY(-50%) rotate(180deg);}
.faq-item .faq-body{padding:0 20px 20px;background:var(--surface);font-size:15px;color:var(--muted);}
.faq-item .faq-body p{padding-top:16px;}

/* ============ CTA ============ */
.cta-band{
  background:var(--brand-light);border-radius:16px;padding:36px 40px;
  display:flex;flex-wrap:wrap;align-items:center;justify-content:space-between;gap:24px;
}
.cta-band h3{font-size:22px;margin-bottom:8px;}
.cta-band p{font-size:15px;color:var(--muted);max-width:600px;}
.cta-actions{display:flex;flex-wrap:wrap;gap:12px;}

.deep-band{background:var(--deep);border-radius:16px;padding:40px;color:#fff;}
.deep-band h3{color:#fff;font-size:22px;margin-bottom:10px;}
.deep-band p{color:#B9C6DC;font-size:15px;max-width:640px;}
.deep-band .btn-outline{border-color:rgba(255,255,255,.5);color:#fff;background:transparent;}
.deep-band .btn-outline:hover{background:rgba(255,255,255,.12);color:#fff;}

/* ============ 相关分类 & 分页 ============ */
.relate{display:flex;flex-wrap:wrap;gap:12px;}
.pagination{
  display:flex;align-items:center;justify-content:center;gap:8px;margin-top:40px;
}
.pagination a,.pagination span{
  display:inline-flex;align-items:center;justify-content:center;
  min-width:42px;height:42px;padding:0 14px;border-radius:var(--r-btn);
  border:1px solid var(--line);background:#fff;font-size:14px;color:var(--ink);
  font-variant-numeric:tabular-nums;transition:all .2s ease;
}
.pagination a:hover{border-color:var(--brand);color:var(--brand);background:var(--brand-light);}
.pagination .current{background:var(--brand);border-color:var(--brand);color:#fff;font-weight:600;}
.pagination .is-disabled{color:var(--disabled);cursor:not-allowed;}
.pagination .is-disabled:hover{border-color:var(--line);background:#fff;color:var(--disabled);}

/* ============ 页脚 ============ */
.site-footer{background:var(--deep);color:#fff;padding:56px 0 24px;margin-top:72px;}
.footer-grid{display:grid;grid-template-columns:1.4fr 1fr 1fr 1.4fr;gap:36px;}
.footer-brand .logo{margin-bottom:16px;}
.footer-brand .logo-text{color:#fff;}
.footer-brand p{color:#B9C6DC;font-size:14px;max-width:320px;}
.site-footer h4{font-size:15px;color:#fff;margin-bottom:16px;font-weight:600;}
.footer-links li{margin-bottom:10px;}
.footer-links a{color:#B9C6DC;font-size:14px;}
.footer-links a:hover{color:#fff;}
.footer-note{color:#B9C6DC;font-size:14px;}
.footer-bottom{
  margin-top:36px;padding-top:20px;border-top:1px solid rgba(255,255,255,.12);
  display:flex;flex-wrap:wrap;justify-content:space-between;gap:10px;
  color:#8FA3BF;font-size:13px;
}

/* ============ 响应式 ============ */
@media (max-width:1024px){
  :root{--sec-pad:56px;}
  .nav-toggle{display:block;margin-left:auto;order:2;}
  .header-actions{order:3;}
  .search-box{display:none;}
  .main-nav{
    display:none;position:absolute;left:0;right:0;top:64px;
    flex-direction:column;align-items:stretch;gap:0;
    background:#fff;border-bottom:1px solid var(--line);box-shadow:var(--s2);
    padding:8px 24px 20px;
  }
  .main-nav.is-open{display:flex;}
  .nav-link{padding:14px 0;border-bottom:1px solid var(--line);}
  .nav-link::after{display:none;}
  .nav-cta{display:flex;margin-top:16px;}
  .hero-grid{grid-template-columns:1fr;gap:32px;}
  .hero h1{font-size:30px;}
  .grid-3,.grid-4{grid-template-columns:repeat(2,1fr);}
  .steps{grid-template-columns:repeat(2,1fr);}
  .footer-grid{grid-template-columns:1fr 1fr;gap:28px;}
}
@media (max-width:768px){
  .header-actions .btn{display:none;}
  .faq-grid{grid-template-columns:1fr;}
  .grid-2{grid-template-columns:1fr;}
  .stats{grid-template-columns:1fr;}
  .cta-band{padding:28px 22px;}
}
@media (max-width:640px){
  :root{--sec-pad:40px;}
  .container{padding:0 16px;}
  body{font-size:15px;}
  .hero{padding:36px 0 44px;}
  .hero h1{font-size:26px;}
  .hero-lead{font-size:15px;}
  .hero-cta .btn{width:100%;}
  .grid-3,.grid-4,.steps{grid-template-columns:1fr;}
  .card-body{padding:16px;}
  .footer-grid{grid-template-columns:1fr;}
  .cta-actions{width:100%;}
  .cta-actions .btn{width:100%;}
  .sec-head h2{font-size:22px;}
  .deep-band{padding:28px 22px;}
}
@media (max-width:480px){
  .hero h1{font-size:24px;}
  .logo-text{font-size:15px;}
  .stat-num{font-size:22px;}
}

/* roulang page: category2 */
:root{
  --brand:#1E4ED8;
  --brand-dark:#16389E;
  --brand-light:#EEF3FE;
  --accent:#FF6A2B;
  --ink:#1A2233;
  --muted:#5A6B85;
  --disabled:#A7B2C2;
  --bg:#FFFFFF;
  --bg-soft:#F7F9FC;
  --border:#E3E9F2;
  --dark:#0F2340;
  --r-card:14px;
  --r-img:12px;
  --r-btn:10px;
  --s1:0 1px 2px rgba(16,24,40,.06);
  --s2:0 8px 24px rgba(23,43,99,.08);
  --s3:0 14px 36px rgba(23,43,99,.14);
  --pad-section:72px;
  --font:"PingFang SC","Microsoft YaHei","Noto Sans SC",system-ui,-apple-system,"Segoe UI",sans-serif;
}
*,*::before,*::after{box-sizing:border-box;}
html{-webkit-text-size-adjust:100%;scroll-behavior:smooth;}
body{
  margin:0;
  font-family:var(--font);
  font-size:16px;
  line-height:1.78;
  color:var(--ink);
  background:var(--bg);
  font-variant-numeric:tabular-nums;
}
img{max-width:100%;display:block;height:auto;}
a{color:var(--brand);text-decoration:none;transition:color .2s ease;}
a:hover{color:var(--brand-dark);}
h1,h2,h3,h4,p,ul,ol{margin:0;}
ul,ol{padding:0;list-style:none;}
button{font-family:inherit;font-size:inherit;cursor:pointer;}
input,button{outline:none;}
a:focus-visible,button:focus-visible,input:focus-visible,summary:focus-visible{
  outline:2px solid var(--brand);
  outline-offset:2px;
  border-radius:6px;
}
.container{width:100%;max-width:1200px;margin:0 auto;padding:0 20px;}
.grid-padding-x > .cell{padding-left:12px;padding-right:12px;}
.grid-padding-x{margin-left:-12px;margin-right:-12px;}

/* ============ header ============ */
.site-header{
  position:sticky;
  top:0;
  z-index:60;
  background:#fff;
  border-bottom:1px solid var(--border);
  box-shadow:var(--s1);
}
.header-inner{
  position:relative;
  display:flex;
  align-items:center;
  gap:22px;
  min-height:64px;
}
.logo{display:inline-flex;align-items:center;gap:10px;color:var(--ink);flex-shrink:0;}
.logo:hover{color:var(--ink);}
.logo-mark{
  width:34px;height:34px;border-radius:10px;
  background:var(--brand);
  display:inline-flex;align-items:center;justify-content:center;
  box-shadow:0 4px 12px rgba(30,78,216,.28);
}
.logo-text{font-size:17px;font-weight:600;letter-spacing:.01em;white-space:nowrap;}
.main-nav{display:flex;align-items:center;gap:2px;}
.nav-link{
  position:relative;
  display:inline-block;
  padding:9px 12px;
  font-size:15px;
  font-weight:500;
  color:var(--ink);
  border-radius:8px;
  transition:color .2s ease,background-color .2s ease;
}
.nav-link::after{
  content:"";
  position:absolute;left:12px;right:12px;bottom:3px;
  height:2px;border-radius:2px;
  background:var(--brand);
  transform:scaleX(0);
  transform-origin:left center;
  transition:transform .24s ease;
}
.nav-link:hover{color:var(--brand);background:var(--bg-soft);}
.nav-link:hover::after,.nav-link.is-active::after{transform:scaleX(1);}
.nav-link.is-active{color:var(--brand);font-weight:600;}
.header-actions{margin-left:auto;display:flex;align-items:center;gap:12px;}
.search-box{
  display:flex;align-items:center;gap:8px;
  width:220px;height:40px;
  padding:0 12px;
  background:var(--bg-soft);
  border:1px solid var(--border);
  border-radius:var(--r-btn);
  transition:border-color .2s ease,box-shadow .2s ease,background-color .2s ease;
}
.search-box:focus-within{
  background:#fff;
  border-color:var(--brand);
  box-shadow:0 0 0 3px rgba(30,78,216,.14);
}
.search-box input{
  flex:1;min-width:0;
  border:0;background:transparent;
  font-size:14px;color:var(--ink);
  height:38px;
}
.search-box input::placeholder{color:var(--disabled);}
.search-box button{
  border:0;background:transparent;color:var(--muted);
  display:inline-flex;align-items:center;justify-content:center;
  width:26px;height:26px;padding:0;border-radius:6px;
}
.search-box button:hover{color:var(--brand);background:var(--brand-light);}
.nav-toggle{
  display:none;
  width:42px;height:38px;
  border:1px solid var(--border);
  background:#fff;border-radius:var(--r-btn);
  align-items:center;justify-content:center;
}
.nav-toggle span{display:block;width:18px;height:2px;background:var(--ink);border-radius:2px;position:relative;}
.nav-toggle span::before,.nav-toggle span::after{
  content:"";position:absolute;left:0;width:18px;height:2px;background:var(--ink);border-radius:2px;
}
.nav-toggle span::before{top:-6px;}
.nav-toggle span::after{top:6px;}

/* ============ buttons ============ */
.btn{
  display:inline-flex;align-items:center;justify-content:center;gap:8px;
  min-height:44px;padding:0 20px;
  font-size:15px;font-weight:600;
  border-radius:var(--r-btn);
  border:1px solid transparent;
  cursor:pointer;
  transition:transform .22s ease,box-shadow .22s ease,background-color .22s ease,color .22s ease,border-color .22s ease;
  white-space:nowrap;
}
.btn-primary{background:var(--brand);color:#fff;box-shadow:var(--s1);}
.btn-primary:hover{background:var(--brand-dark);color:#fff;transform:translateY(-2px);box-shadow:var(--s2);}
.btn-outline{background:transparent;color:var(--brand);border-color:var(--brand);}
.btn-outline:hover{background:var(--brand-light);color:var(--brand-dark);transform:translateY(-2px);}
.btn-ghost{background:transparent;color:var(--brand);}
.btn-ghost:hover{background:#F1F5FB;color:var(--brand-dark);}
.btn-accent{background:var(--accent);color:#fff;}
.btn-accent:hover{background:#E85A1C;color:#fff;transform:translateY(-2px);box-shadow:var(--s2);}
.btn-sm{min-height:40px;padding:0 16px;font-size:14px;}
.btn-block{width:100%;}
.btn[disabled],.btn.is-disabled{opacity:.5;cursor:not-allowed;transform:none;box-shadow:none;}

/* ============ breadcrumb ============ */
.crumb{display:flex;flex-wrap:wrap;align-items:center;gap:8px;font-size:13px;color:var(--muted);margin-bottom:18px;}
.crumb ol{display:flex;flex-wrap:wrap;align-items:center;gap:8px;margin:0;padding:0;list-style:none;}
.crumb li{display:inline-flex;align-items:center;gap:8px;}
.crumb li + li::before{content:"/";color:var(--disabled);}
.crumb a{color:var(--muted);}
.crumb a:hover{color:var(--brand);}
.crumb [aria-current="page"]{color:var(--ink);font-weight:600;}

/* ============ category hero ============ */
.cat-hero{background:var(--bg-soft);padding:44px 0 60px;border-bottom:1px solid var(--border);}
.cat-hero .grid-x{align-items:center;}
.cat-hero h1{
  font-size:38px;line-height:1.25;font-weight:700;
  letter-spacing:-.01em;margin-bottom:16px;
}
.h1-kicker{
  display:block;
  font-size:14px;font-weight:600;
  letter-spacing:.14em;
  color:var(--brand);
  margin-bottom:10px;
}
.cat-hero .lede{
  font-size:17px;color:var(--muted);max-width:34em;margin-bottom:22px;
}
.hero-meta{display:flex;flex-wrap:wrap;align-items:center;gap:10px;}
.badge{
  display:inline-flex;align-items:center;gap:5px;
  padding:4px 11px;
  font-size:12px;font-weight:600;line-height:1.6;
  border-radius:999px;
  background:var(--brand-light);color:var(--brand-dark);
  white-space:nowrap;
}
.badge-accent{background:#FFF1E9;color:#C2460F;}
.badge-ghost{background:#fff;color:var(--muted);border:1px solid var(--border);}
.stamp{font-size:13px;color:var(--muted);}
.hero-cover{
  position:relative;border-radius:var(--r-img);overflow:hidden;
  aspect-ratio:16 / 10;background:var(--brand-light);box-shadow:var(--s2);
}
.hero-cover img{width:100%;height:100%;object-fit:cover;}
.hero-cover::after{
  content:"";position:absolute;right:0;bottom:0;
  width:78%;height:6px;border-radius:6px 0 0 0;
  background:var(--accent);opacity:.9;
}

/* ============ section base ============ */
.section{padding:var(--pad-section) 0;}
.section-soft{background:var(--bg-soft);}
.section-head{margin-bottom:28px;}
.section-head h2{
  position:relative;
  font-size:26px;font-weight:700;line-height:1.35;
  padding-left:14px;margin-bottom:10px;
}
.section-head h2::before{
  content:"";position:absolute;left:0;top:6px;bottom:6px;
  width:4px;border-radius:4px;background:var(--brand);
}
.section-head p{color:var(--muted);font-size:15px;max-width:56em;}

/* ============ sidebar toc ============ */
.toc-card{
  position:sticky;top:84px;
  background:#fff;
  border:1px solid var(--border);
  border-radius:var(--r-card);
  box-shadow:var(--s1);
  padding:20px;
}
.toc-card h2{font-size:16px;font-weight:700;margin-bottom:6px;}
.toc-card .toc-note{font-size:13px;color:var(--muted);margin-bottom:14px;}
.toc-list{display:flex;flex-direction:column;gap:2px;counter-reset:toc;}
.toc-list a{
  display:flex;align-items:center;gap:10px;
  padding:9px 10px;border-radius:9px;
  font-size:14px;color:var(--ink);
  transition:background-color .2s ease,color .2s ease;
}
.toc-list a:hover{background:var(--brand-light);color:var(--brand-dark);}
.toc-list a .num{
  font-size:12px;font-weight:700;color:var(--accent);
  letter-spacing:.04em;
}
.toc-foot{
  margin-top:16px;padding-top:16px;border-top:1px dashed var(--border);
  font-size:13px;color:var(--muted);
}

/* ============ entry flow ============ */
.entry-group{margin-bottom:38px;scroll-margin-top:90px;}
.entry-group:last-child{margin-bottom:0;}
.entry-group > h2{
  font-size:19px;font-weight:700;
  display:flex;align-items:baseline;gap:10px;
  margin-bottom:16px;
}
.entry-group > h2 .idx{
  font-size:14px;font-weight:700;color:var(--accent);
  letter-spacing:.06em;
}
.entry{
  display:flex;gap:18px;
  background:#fff;
  border:1px solid var(--border);
  border-left:2px solid var(--brand);
  border-radius:var(--r-card);
  padding:20px;
  box-shadow:var(--s1);
  transition:transform .22s ease,box-shadow .22s ease,border-color .22s ease;
  margin-bottom:14px;
  color:var(--ink);
}
.entry:last-child{margin-bottom:0;}
.entry:hover{transform:translateY(-3px);box-shadow:var(--s3);border-left-color:var(--accent);color:var(--ink);}
.entry-thumb{
  width:160px;flex:0 0 160px;
  aspect-ratio:16 / 10;
  border-radius:var(--r-img);
  overflow:hidden;background:var(--brand-light);
}
.entry-thumb img{width:100%;height:100%;object-fit:cover;}
.entry-body{flex:1;min-width:0;}
.entry-tags{display:flex;flex-wrap:wrap;gap:8px;margin-bottom:10px;}
.entry-body h3{
  font-size:18px;font-weight:600;line-height:1.5;
  margin-bottom:8px;
  display:-webkit-box;-webkit-line-clamp:2;-webkit-box-orient:vertical;overflow:hidden;
}
.entry-body p{
  font-size:14px;color:var(--muted);
  display:-webkit-box;-webkit-line-clamp:2;-webkit-box-orient:vertical;overflow:hidden;
  margin-bottom:10px;
}
.entry-foot{display:flex;align-items:center;justify-content:space-between;gap:12px;font-size:13px;color:var(--muted);}
.entry-foot .more{color:var(--brand);font-weight:600;}
.entry:hover .more{color:var(--brand-dark);}

/* ============ steps ============ */
.step-grid{margin-top:8px;}
.step-card{
  height:100%;
  background:#fff;
  border:1px solid var(--border);
  border-radius:var(--r-card);
  padding:24px 20px;
  box-shadow:var(--s1);
  transition:transform .22s ease,box-shadow .22s ease;
}
.step-card:hover{transform:translateY(-3px);box-shadow:var(--s2);}
.step-no{
  display:inline-flex;align-items:center;justify-content:center;
  width:38px;height:38px;border-radius:12px;
  background:var(--brand-light);color:var(--brand);
  font-weight:700;font-size:15px;margin-bottom:14px;
}
.step-card h3{font-size:17px;font-weight:600;margin-bottom:8px;}
.step-card p{font-size:14px;color:var(--muted);}

/* ============ faq ============ */
.faq-list{display:flex;flex-direction:column;gap:14px;}
.faq-item{
  background:#fff;
  border:1px solid var(--border);
  border-radius:var(--r-card);
  box-shadow:var(--s1);
  overflow:hidden;
  transition:box-shadow .22s ease;
}
.faq-item[open]{box-shadow:var(--s2);}
.faq-item summary{
  list-style:none;
  cursor:pointer;
  padding:18px 20px;
  font-size:16px;font-weight:600;
  display:flex;align-items:center;justify-content:space-between;gap:16px;
}
.faq-item summary::-webkit-details-marker{display:none;}
.faq-item summary .mark{
  flex:0 0 20px;width:20px;height:20px;
  position:relative;color:var(--brand);
  transition:transform .2s ease;
}
.faq-item summary .mark::before,
.faq-item summary .mark::after{
  content:"";position:absolute;background:currentColor;border-radius:2px;
}
.faq-item summary .mark::before{left:0;right:0;top:9px;height:2px;}
.faq-item summary .mark::after{top:0;bottom:0;left:9px;width:2px;transition:opacity .2s ease;}
.faq-item[open] summary .mark{transform:rotate(180deg);}
.faq-item[open] summary .mark::after{opacity:0;}
.faq-body{
  padding:2px 20px 20px;
  background:var(--bg-soft);
  border-top:1px solid var(--border);
  font-size:15px;color:var(--muted);
}
.faq-body p{padding-top:14px;}

/* ============ related + pagination ============ */
.pill-row{display:flex;flex-wrap:wrap;gap:12px;margin-bottom:30px;}
.pill{
  display:inline-flex;align-items:center;gap:8px;
  min-height:44px;padding:0 20px;
  border-radius:999px;
  border:1px solid var(--border);
  background:#fff;
  color:var(--ink);font-size:14px;font-weight:600;
  box-shadow:var(--s1);
  transition:transform .22s ease,box-shadow .22s ease,color .22s ease,border-color .22s ease;
}
.pill:hover{color:var(--brand);border-color:var(--brand);transform:translateY(-2px);box-shadow:var(--s2);}
.pill.is-current{background:var(--brand);border-color:var(--brand);color:#fff;}
.pill.is-current:hover{color:#fff;}
.pager{display:flex;align-items:center;justify-content:center;gap:10px;flex-wrap:wrap;}
.pager .pg{
  min-width:42px;height:42px;
  display:inline-flex;align-items:center;justify-content:center;
  padding:0 14px;
  border-radius:var(--r-btn);
  border:1px solid var(--border);
  background:#fff;color:var(--ink);
  font-size:14px;font-weight:600;
}
.pager .pg:hover{color:var(--brand);border-color:var(--brand);}
.pager .pg.is-current{background:var(--brand);border-color:var(--brand);color:#fff;}
.pager .pg.is-muted{color:var(--disabled);cursor:not-allowed;}
.pager .pg.is-muted:hover{border-color:var(--border);color:var(--disabled);}

/* ============ cta ============ */
.cta-band{
  background:var(--brand-light);
  border-radius:16px;
  padding:32px;
  display:flex;align-items:center;justify-content:space-between;gap:24px;
}
.cta-band h3{font-size:21px;font-weight:700;margin-bottom:8px;}
.cta-band p{font-size:15px;color:var(--muted);max-width:40em;}
.cta-actions{display:flex;gap:12px;flex-shrink:0;}

/* ============ footer ============ */
.site-footer{background:var(--dark);color:#fff;padding:56px 0 26px;margin-top:8px;}
.footer-grid{
  display:grid;
  grid-template-columns:1.5fr 1fr 1fr 1.3fr;
  gap:34px;
}
.footer-brand .logo{margin-bottom:14px;}
.footer-brand .logo-text{color:#fff;font-size:16px;}
.footer-brand p{font-size:14px;color:#B9C6DC;line-height:1.8;}
.site-footer h4{font-size:15px;font-weight:600;color:#fff;margin-bottom:14px;}
.footer-links{display:flex;flex-direction:column;gap:10px;}
.footer-links a{color:#B9C6DC;font-size:14px;}
.footer-links a:hover{color:#fff;}
.footer-note{font-size:13px;color:#93A3BE;line-height:1.85;}
.footer-bottom{
  margin-top:34px;padding-top:20px;
  border-top:1px solid rgba(255,255,255,.12);
  display:flex;flex-wrap:wrap;align-items:center;justify-content:space-between;gap:10px;
  font-size:13px;color:#93A3BE;
}

/* ============ responsive ============ */
@media (max-width:1024px){
  :root{--pad-section:56px;}
  .header-inner{gap:14px;}
  .nav-toggle{display:inline-flex;order:3;}
  .header-actions{order:4;margin-left:auto;}
  .main-nav{
    position:absolute;
    top:100%;left:0;right:0;
    display:none;
    flex-direction:column;
    align-items:stretch;
    gap:4px;
    padding:14px 16px;
    background:#fff;
    border-bottom:1px solid var(--border);
    box-shadow:var(--s2);
  }
  .main-nav.is-open{display:flex;}
  .nav-link{padding:11px 12px;}
  .nav-link::after{display:none;}
  .nav-link.is-active{background:var(--brand-light);}
  .search-box{width:170px;}
  .cat-hero{padding:36px 0 46px;}
  .cat-hero h1{font-size:31px;}
  .footer-grid{grid-template-columns:1fr 1fr;gap:28px;}
}
@media (max-width:768px){
  body{font-size:15px;}
  .search-box{display:none;}
  .cat-hero h1{font-size:27px;margin-bottom:12px;}
  .cat-hero .lede{font-size:15px;}
  .hero-cover{margin-top:26px;}
  .entry{flex-direction:column;gap:14px;padding:16px;}
  .entry-thumb{width:100%;flex:0 0 auto;}
  .toc-card{position:static;margin-bottom:26px;}
  .cta-band{flex-direction:column;align-items:flex-start;padding:24px;}
  .cta-actions{width:100%;flex-direction:column;}
  .cta-actions .btn{width:100%;}
  .footer-grid{grid-template-columns:1fr;gap:24px;}
  .footer-bottom{flex-direction:column;align-items:flex-start;}
}
@media (max-width:520px){
  :root{--pad-section:40px;}
  .container{padding:0 16px;}
  .logo-text{font-size:15px;}
  .cat-hero h1{font-size:24px;}
  .section-head h2{font-size:22px;}
  .entry-group > h2{font-size:17px;}
  .entry-body h3{font-size:16px;}
  .cta-band h3{font-size:18px;}
  .faq-item summary{font-size:15px;padding:16px;}
  .pill{width:100%;justify-content:center;}
}

/* roulang page: category3 */
:root{
  --primary:#1E4ED8;
  --primary-deep:#16389E;
  --primary-light:#EEF3FE;
  --accent:#FF6A2B;
  --bg:#FFFFFF;
  --bg-soft:#F7F9FC;
  --border:#E3E9F2;
  --ink:#1A2233;
  --muted:#5A6B85;
  --disabled:#A7B2C2;
  --dark:#0F2340;
  --radius-card:14px;
  --radius-img:12px;
  --radius-btn:10px;
  --radius-pill:999px;
  --s1:0 1px 2px rgba(16,24,40,.06);
  --s2:0 8px 24px rgba(23,43,99,.08);
  --s3:0 14px 36px rgba(23,43,99,.14);
  --pad-section:72px;
  --font:"PingFang SC","Microsoft YaHei","Noto Sans SC",system-ui,-apple-system,"Segoe UI",sans-serif;
}
*,*::before,*::after{box-sizing:border-box}
html{-webkit-text-size-adjust:100%}
body{
  margin:0;
  font-family:var(--font);
  font-size:16px;
  line-height:1.75;
  color:var(--ink);
  background:var(--bg);
  font-variant-numeric:tabular-nums;
}
img{max-width:100%;display:block;border:0}
a{color:var(--primary);text-decoration:none;transition:color .2s ease}
a:hover{color:var(--primary-deep)}
ul,ol{margin:0;padding:0;list-style:none}
h1,h2,h3,h4{margin:0;font-weight:600;line-height:1.35;letter-spacing:.2px}
p{margin:0}
button,input{font-family:inherit;font-size:inherit}
button{cursor:pointer}
:focus-visible{outline:2px solid var(--primary);outline-offset:2px;border-radius:6px}
.container{max-width:1200px;margin:0 auto;padding:0 24px;width:100%}
.sr-only{position:absolute;width:1px;height:1px;padding:0;margin:-1px;overflow:hidden;clip:rect(0 0 0 0);white-space:nowrap;border:0}

/* ---------- 导航 ---------- */
.site-header{
  position:sticky;top:0;z-index:80;
  background:#fff;
  border-bottom:1px solid var(--border);
  box-shadow:var(--s1);
}
.header-inner{display:flex;align-items:center;gap:22px;min-height:64px}
.logo{display:flex;align-items:center;gap:10px;flex:0 0 auto;color:var(--ink)}
.logo:hover{color:var(--ink)}
.logo-mark{
  width:34px;height:34px;border-radius:10px;background:var(--primary);
  display:inline-flex;align-items:center;justify-content:center;flex:0 0 auto;
}
.logo-text{font-size:17px;font-weight:600;white-space:nowrap}
.main-nav{display:flex;align-items:center;gap:26px;margin-left:8px}
.nav-link{
  position:relative;display:inline-block;padding:6px 0;
  font-size:15px;font-weight:500;color:var(--muted);
}
.nav-link::after{
  content:"";position:absolute;left:0;right:0;bottom:0;height:2px;
  background:var(--primary);border-radius:2px;
  transform:scaleX(0);transform-origin:left;transition:transform .22s ease;
}
.nav-link:hover{color:var(--primary)}
.nav-link:hover::after{transform:scaleX(1)}
.nav-link.is-active{color:var(--primary);font-weight:600}
.nav-link.is-active::after{transform:scaleX(1)}
.header-actions{margin-left:auto;display:flex;align-items:center;gap:12px}
.search-box{position:relative;display:flex;align-items:center}
.search-box input{
  width:220px;height:40px;padding:0 40px 0 14px;
  border:1px solid var(--border);border-radius:var(--radius-btn);
  background:var(--bg-soft);color:var(--ink);font-size:14px;
  transition:border-color .2s ease,box-shadow .2s ease,background .2s ease;
}
.search-box input::placeholder{color:var(--disabled)}
.search-box input:focus{
  outline:none;background:#fff;border-color:var(--primary);
  box-shadow:0 0 0 3px rgba(30,78,216,.14);
}
.search-box button{
  position:absolute;right:6px;top:50%;transform:translateY(-50%);
  width:30px;height:30px;border:0;background:transparent;color:var(--muted);
  display:inline-flex;align-items:center;justify-content:center;border-radius:8px;
}
.search-box button:hover{color:var(--primary);background:var(--primary-light)}
.nav-toggle{
  display:none;width:42px;height:42px;border:1px solid var(--border);background:#fff;
  border-radius:var(--radius-btn);align-items:center;justify-content:center;flex-direction:column;gap:4px;
}
.nav-toggle span{display:block;width:18px;height:2px;background:var(--ink);border-radius:2px;transition:transform .2s ease,opacity .2s ease}
.nav-toggle[aria-expanded="true"] span:nth-child(1){transform:translateY(6px) rotate(45deg)}
.nav-toggle[aria-expanded="true"] span:nth-child(2){opacity:0}
.nav-toggle[aria-expanded="true"] span:nth-child(3){transform:translateY(-6px) rotate(-45deg)}

/* ---------- 按钮 ---------- */
.btn{
  display:inline-flex;align-items:center;justify-content:center;gap:8px;
  min-height:44px;padding:0 22px;border-radius:var(--radius-btn);
  border:1px solid transparent;font-size:15px;font-weight:500;
  text-decoration:none;white-space:nowrap;
  transition:background .22s ease,color .22s ease,border-color .22s ease,transform .22s ease,box-shadow .22s ease;
}
.btn i{font-size:14px}
.btn-primary{background:var(--primary);color:#fff}
.btn-primary:hover{background:var(--primary-deep);color:#fff;transform:translateY(-2px);box-shadow:var(--s2)}
.btn-outline{background:transparent;border-color:var(--primary);color:var(--primary)}
.btn-outline:hover{background:var(--primary-light);color:var(--primary-deep);transform:translateY(-2px)}
.btn-ghost{background:transparent;color:var(--primary)}
.btn-ghost:hover{background:#F1F5FB;color:var(--primary-deep)}
.btn-accent{background:var(--accent);color:#fff}
.btn-accent:hover{background:#E85A1E;color:#fff;transform:translateY(-2px);box-shadow:var(--s2)}
.btn-light{background:#fff;color:var(--primary)}
.btn-light:hover{background:var(--primary-light);color:var(--primary-deep);transform:translateY(-2px)}
.btn-outline-white{background:transparent;border-color:rgba(255,255,255,.6);color:#fff}
.btn-outline-white:hover{background:rgba(255,255,255,.14);color:#fff;transform:translateY(-2px)}
.btn-sm{min-height:40px;padding:0 18px;font-size:14px}
.btn[disabled],.btn.is-disabled{opacity:.5;cursor:not-allowed;transform:none;box-shadow:none}

/* ---------- 通用区块 ---------- */
.section{padding:var(--pad-section) 0}
.section-soft{background:var(--bg-soft)}
.section-head{display:flex;align-items:flex-end;justify-content:space-between;gap:24px;margin-bottom:32px;flex-wrap:wrap}
.section-head h2{font-size:26px;position:relative;padding-left:16px}
.section-head h2::before{
  content:"";position:absolute;left:0;top:6px;bottom:6px;width:4px;border-radius:2px;background:var(--primary);
}
.section-head p{font-size:15px;color:var(--muted);max-width:62ch;margin-top:10px}
.section-head .head-link{font-size:14px;font-weight:500;white-space:nowrap}
.section-head .head-link i{margin-left:6px;font-size:12px}
.section-head > div{flex:1 1 420px;min-width:0}

/* ---------- 面包屑 ---------- */
.crumb-wrap{border-bottom:1px solid var(--border);background:#fff}
.breadcrumb{display:flex;flex-wrap:wrap;align-items:center;gap:8px;font-size:14px;color:var(--muted);padding:14px 0}
.breadcrumb li{display:inline-flex;align-items:center;gap:8px}
.breadcrumb li+li::before{content:"／";color:#C3CEE2}
.breadcrumb li[aria-current] span{color:var(--ink);font-weight:500}
.breadcrumb a{color:var(--muted)}
.breadcrumb a:hover{color:var(--primary)}

/* ---------- Hero ---------- */
.hero{position:relative;background:var(--bg-soft);overflow:hidden;padding:56px 0 72px}
.hero-arc{position:absolute;right:-60px;bottom:-70px;width:520px;opacity:.08;pointer-events:none}
.hero .grid-x{align-items:center}
.hero-copy h1{font-size:38px;line-height:1.3;letter-spacing:.3px}
.hero-copy .hero-sub{margin-top:18px;font-size:17px;color:var(--muted);max-width:46ch}
.hero-actions{display:flex;flex-wrap:wrap;gap:12px;margin-top:28px}
.hero-pills{display:flex;flex-wrap:wrap;gap:10px;margin-top:26px}
.pill{
  display:inline-flex;align-items:center;gap:8px;padding:7px 14px;border-radius:var(--radius-pill);
  background:#fff;border:1px solid var(--border);font-size:13px;color:var(--muted);
}
.pill i{color:var(--primary);font-size:12px}
.hero-media{position:relative;border-radius:16px;overflow:hidden;box-shadow:var(--s2);aspect-ratio:16/11;background:var(--primary-light)}
.hero-media img{width:100%;height:100%;object-fit:cover}
.hero-media::after{
  content:"";position:absolute;left:24px;right:24px;bottom:0;height:6px;border-radius:6px 6px 0 0;
  background:var(--primary);opacity:.9;
}
.hero-badge{
  position:absolute;left:18px;top:18px;background:#fff;border-radius:var(--radius-pill);
  padding:7px 14px;font-size:13px;font-weight:500;color:var(--primary);box-shadow:var(--s1);
}

/* ---------- 编号榜单 ---------- */
.rank-list{display:flex;flex-direction:column;border-top:1px solid var(--border)}
.rank-item{
  display:grid;grid-template-columns:70px minmax(0,1fr) 150px;gap:22px;align-items:start;
  padding:26px 8px;border-bottom:1px dashed #D3DCEA;color:var(--ink);text-decoration:none;
  transition:background .22s ease,transform .22s ease;
}
.rank-item:hover{background:#FBFCFE;color:var(--ink);transform:translateX(4px)}
.rank-num{font-size:32px;font-weight:700;color:#C3CEE2;line-height:1;letter-spacing:.5px;transition:color .22s ease}
.rank-item:hover .rank-num{color:var(--accent)}
.rank-body h3{font-size:20px;margin-bottom:8px}
.rank-body p{font-size:15px;color:var(--muted);display:-webkit-box;-webkit-line-clamp:2;-webkit-box-orient:vertical;overflow:hidden}
.tag-row{display:flex;flex-wrap:wrap;gap:8px;margin-top:14px}
.tag{
  display:inline-flex;align-items:center;padding:4px 12px;border-radius:var(--radius-pill);
  background:var(--primary-light);color:var(--primary);font-size:12px;font-weight:500;
}
.tag-accent{background:#FFF0E8;color:#C94812}
.rank-side{text-align:right;font-size:13px;color:var(--disabled)}
.rank-side .rank-time{display:block;color:var(--muted);margin-bottom:10px}
.rank-side .rank-arrow{color:var(--primary);font-size:14px}

/* ---------- 流程步骤 ---------- */
.steps{display:grid;grid-template-columns:repeat(4,1fr);gap:20px;margin-top:8px}
.step{
  background:#fff;border:1px solid var(--border);border-radius:var(--radius-card);
  padding:24px;box-shadow:var(--s1);transition:box-shadow .22s ease,transform .22s ease;
}
.step:hover{box-shadow:var(--s2);transform:translateY(-3px)}
.step-no{font-size:22px;font-weight:700;color:var(--accent);letter-spacing:.5px}
.step h3{font-size:17px;margin:14px 0 8px}
.step p{font-size:14px;color:var(--muted)}

/* ---------- 分栏说明 ---------- */
.split{display:grid;grid-template-columns:1.15fr .85fr;gap:28px;align-items:stretch}
.panel{
  background:#fff;border:1px solid var(--border);border-radius:var(--radius-card);
  padding:28px;box-shadow:var(--s1);
}
.panel h3{font-size:19px;margin-bottom:16px}
.check-list li{
  display:flex;gap:12px;padding:12px 0;border-bottom:1px dashed #E6ECF6;font-size:15px;color:var(--muted);
}
.check-list li:last-child{border-bottom:0;padding-bottom:0}
.check-list i{color:var(--primary);margin-top:6px;font-size:13px}
.check-list strong{color:var(--ink);font-weight:600}
.stat-panel{
  background:var(--dark);color:#fff;border-radius:var(--radius-card);padding:28px;
  display:flex;flex-direction:column;justify-content:space-between;gap:24px;
}
.stat-panel h3{font-size:19px;color:#fff}
.stat-grid{display:grid;grid-template-columns:1fr 1fr;gap:20px}
.stat-item .stat-num{font-size:28px;font-weight:700;color:#fff;letter-spacing:.5px}
.stat-item .stat-num small{font-size:13px;font-weight:500;color:#B9C6DC;margin-left:4px}
.stat-item .stat-label{font-size:13px;color:#B9C6DC;margin-top:4px}
.stat-panel .stat-note{font-size:13px;color:#9FB0CB;border-top:1px solid rgba(255,255,255,.12);padding-top:16px}

/* ---------- 深色横幅 ---------- */
.banner{
  position:relative;border-radius:18px;overflow:hidden;padding:48px;
  background-image:url("/assets/images/backpic/back-2.png");
  background-size:cover;background-position:center;color:#fff;
}
.banner::before{content:"";position:absolute;inset:0;background:rgba(15,35,64,.78)}
.banner-inner{position:relative;z-index:1;display:grid;grid-template-columns:1.2fr .8fr;gap:32px;align-items:center}
.banner h2{font-size:26px;color:#fff}
.banner p{font-size:15px;color:#D6DFEE;margin-top:14px;max-width:56ch}
.banner .hero-actions{margin-top:24px}
.banner-facts{display:grid;grid-template-columns:1fr 1fr;gap:18px}
.banner-fact{
  background:rgba(255,255,255,.08);border:1px solid rgba(255,255,255,.16);
  border-radius:12px;padding:16px;
}
.banner-fact strong{display:block;font-size:16px;color:#fff}
.banner-fact span{font-size:13px;color:#B9C6DC}

/* ---------- FAQ ---------- */
.faq-grid{display:grid;grid-template-columns:1fr 1fr;gap:16px}
.faq-item{
  background:#fff;border:1px solid var(--border);border-radius:var(--radius-card);
  box-shadow:var(--s1);overflow:hidden;transition:box-shadow .22s ease;
}
.faq-item[open]{box-shadow:var(--s2)}
.faq-item summary{
  list-style:none;cursor:pointer;padding:20px 22px;font-size:16px;font-weight:600;
  display:flex;align-items:center;justify-content:space-between;gap:16px;
}
.faq-item summary::-webkit-details-marker{display:none}
.faq-item summary::after{
  content:"\f078";font-family:"Font Awesome 6 Free";font-weight:900;font-size:13px;color:var(--primary);
  transition:transform .2s ease;flex:0 0 auto;
}
.faq-item[open] summary::after{transform:rotate(180deg)}
.faq-body{padding:0 22px 20px;font-size:15px;color:var(--muted);background:var(--bg-soft)}

/* ---------- CTA 条 ---------- */
.cta-bar{
  background:var(--primary-light);border-radius:16px;padding:32px;
  display:flex;align-items:center;justify-content:space-between;gap:24px;flex-wrap:wrap;
}
.cta-bar h3{font-size:20px}
.cta-bar p{font-size:15px;color:var(--muted);margin-top:8px}
.cta-actions{display:flex;gap:12px;flex-wrap:wrap}

/* ---------- 相关分类与分页 ---------- */
.related-row{display:flex;flex-wrap:wrap;gap:12px}
.chip{
  display:inline-flex;align-items:center;gap:8px;padding:10px 18px;border-radius:var(--radius-pill);
  background:#fff;border:1px solid var(--border);font-size:14px;color:var(--muted);
  transition:border-color .2s ease,color .2s ease,background .2s ease,transform .2s ease;
}
.chip:hover{border-color:var(--primary);color:var(--primary);background:var(--primary-light);transform:translateY(-2px)}
.chip.is-active{border-color:var(--primary);color:var(--primary);background:var(--primary-light);font-weight:600}
.pager{display:flex;align-items:center;gap:10px;margin-top:28px;flex-wrap:wrap}
.pager a,.pager span{
  min-width:42px;height:42px;padding:0 14px;border-radius:var(--radius-btn);
  border:1px solid var(--border);background:#fff;font-size:14px;color:var(--muted);
  display:inline-flex;align-items:center;justify-content:center;
}
.pager a:hover{border-color:var(--primary);color:var(--primary)}
.pager .is-current{background:var(--primary);border-color:var(--primary);color:#fff;font-weight:600}
.pager .is-disabled{opacity:.5;cursor:not-allowed}

/* ---------- 页脚 ---------- */
.site-footer{background:var(--dark);color:#fff;padding:64px 0 28px;margin-top:8px}
.footer-grid{display:grid;grid-template-columns:1.4fr 1fr 1fr 1.2fr;gap:32px}
.footer-brand .logo-text{color:#fff}
.footer-brand p{font-size:14px;color:#B9C6DC;margin-top:16px;max-width:34ch}
.site-footer h4{font-size:15px;color:#fff;margin-bottom:16px}
.footer-links li{margin-bottom:10px}
.footer-links a{font-size:15px;color:#B9C6DC}
.footer-links a:hover{color:#fff}
.footer-note{font-size:14px;color:#B9C6DC;max-width:34ch}
.footer-bottom{
  margin-top:36px;padding-top:20px;border-top:1px solid rgba(255,255,255,.12);
  display:flex;align-items:center;justify-content:space-between;gap:16px;flex-wrap:wrap;
  font-size:13px;color:#9FB0CB;
}

/* ---------- 栅格（Foundation 语义类 + 自定义宽度） ---------- */
.grid-x{display:flex;flex-wrap:wrap;margin:0 -12px}
.grid-x>.cell{box-sizing:border-box;padding:0 12px;width:100%}
@media (min-width:640px){
  .grid-x>.cell.medium-6{width:50%}
  .grid-x>.cell.medium-4{width:33.3333%}
}
@media (min-width:1024px){
  .grid-x>.cell.large-3{width:25%}
  .grid-x>.cell.large-4{width:33.3333%}
  .grid-x>.cell.large-6{width:50%}
  .grid-x>.cell.large-8{width:66.6667%}
  .grid-x>.cell.large-9{width:75%}
}

/* ---------- 响应式 ---------- */
@media (max-width:1024px){
  :root{--pad-section:56px}
  .nav-toggle{display:inline-flex}
  .main-nav{
    position:absolute;left:0;right:0;top:64px;margin:0;
    flex-direction:column;align-items:stretch;gap:0;
    background:#fff;border-bottom:1px solid var(--border);box-shadow:var(--s2);
    padding:8px 24px 18px;display:none;
  }
  .site-header.nav-open .main-nav{display:flex}
  .nav-link{padding:14px 0;border-bottom:1px dashed var(--border);font-size:16px}
  .nav-link:last-child{border-bottom:0}
  .nav-link::after{display:none}
  .nav-link.is-active{color:var(--primary)}
  .search-box input{width:180px}
  .hero-copy h1{font-size:32px}
  .steps{grid-template-columns:repeat(2,1fr)}
  .split{grid-template-columns:1fr}
  .banner-inner{grid-template-columns:1fr}
  .footer-grid{grid-template-columns:1fr 1fr;gap:28px}
}
@media (max-width:768px){
  .header-actions .btn-sm{display:none}
  .header-inner{gap:14px}
  .search-box input{width:150px}
  .hero{padding:40px 0 56px}
  .hero-copy h1{font-size:29px}
  .hero-media{aspect-ratio:16/10;margin-top:28px}
  .rank-item{grid-template-columns:52px minmax(0,1fr);gap:16px;padding:22px 4px}
  .rank-num{font-size:26px}
  .rank-side{grid-column:2;text-align:left;display:flex;align-items:center;gap:14px}
  .rank-side .rank-time{margin-bottom:0}
  .faq-grid{grid-template-columns:1fr}
  .banner{padding:32px 24px}
  .banner-facts{grid-template-columns:1fr 1fr}
}
@media (max-width:640px){
  :root{--pad-section:40px}
  body{font-size:15px}
  .container{padding:0 18px}
  .header-actions{gap:8px}
  .search-box{display:none}
  .section-head h2{font-size:22px}
  .section-head{margin-bottom:24px}
  .hero-copy h1{font-size:26px}
  .hero-actions .btn{width:100%}
  .steps{grid-template-columns:1fr}
  .stat-grid{grid-template-columns:1fr 1fr}
  .step,.panel,.stat-panel,.faq-item summary{padding-left:18px;padding-right:18px}
  .cta-bar{padding:24px 18px}
  .cta-actions{width:100%}
  .cta-actions .btn{width:100%}
  .footer-grid{grid-template-columns:1fr}
  .footer-bottom{flex-direction:column;align-items:flex-start;gap:8px}
  .banner-facts{grid-template-columns:1fr}
}
@media (max-width:480px){
  .hero-copy h1{font-size:24px}
  .rank-body h3{font-size:17px}
  .pager a,.pager span{min-width:38px;height:38px;padding:0 11px;font-size:13px}
}