/* roulang page: index */
:root{
  --brand:#1B4A9C;
  --brand-dark:#143A7E;
  --brand-50:#E8EFFB;
  --brand-25:#F2F6FD;
  --accent:#FF6B4A;
  --accent-dark:#E85A38;
  --accent-50:#FFEDE7;
  --cyan:#17A2A6;
  --cyan-dark:#0F7D80;
  --bg:#F6F8FC;
  --bg-alt:#EEF3FA;
  --card:#FFFFFF;
  --text:#101A2B;
  --text-2:#5A6B85;
  --text-3:#8A99B0;
  --border:#E3E9F3;
  --line:#EDF1F8;
  --ok:#1E9E6A;
  --warn:#D98A1F;
  --err:#D64545;
  --r-lg:18px;
  --r-md:14px;
  --r-img:12px;
  --r-btn:10px;
  --r-pill:999px;
  --sh-1:0 1px 2px rgba(16,26,43,.04),0 8px 24px rgba(16,26,43,.06);
  --sh-2:0 12px 32px rgba(16,26,43,.10);
  --maxw:1200px;
  --ease:cubic-bezier(.2,.7,.3,1);
}
*,*::before,*::after{box-sizing:border-box}
html{-webkit-text-size-adjust:100%;scroll-behavior:smooth}
body{
  margin:0;
  font-family:"PingFang SC","Hiragino Sans GB","Microsoft YaHei",system-ui,-apple-system,"Segoe UI",Roboto,sans-serif;
  font-size:16px;
  line-height:1.8;
  color:var(--text);
  background:var(--bg);
  -webkit-font-smoothing:antialiased;
  font-variant-numeric:tabular-nums;
}
img{display:block;max-width:100%;border:0}
a{color:inherit;text-decoration:none}
button,input,select,textarea{font:inherit;color:inherit}
button{cursor:pointer;border:0;background:none}
h1,h2,h3,h4,p,ul,ol,figure{margin:0}
ul,ol{padding:0;list-style:none}
h1,h2,h3{font-weight:600;line-height:1.32;letter-spacing:.01em}
:focus-visible{outline:2px solid var(--accent);outline-offset:2px;border-radius:6px}
.container{width:100%;max-width:var(--maxw);margin:0 auto;padding:0 32px}
.section{padding:76px 0}
.section--alt{background:var(--bg-alt)}
.section-head{display:flex;align-items:flex-end;justify-content:space-between;gap:24px;margin-bottom:32px;flex-wrap:wrap}
.h2{font-size:28px}
.section-head .desc{margin-top:10px;font-size:15px;line-height:1.8;color:var(--text-2);max-width:660px}
.eyebrow{display:inline-flex;align-items:center;height:28px;padding:0 12px;border-radius:var(--r-pill);background:var(--brand-50);color:var(--brand);font-size:12.5px;font-weight:600;letter-spacing:.06em}

/* 导航 */
.site-header{position:sticky;top:0;z-index:90;background:var(--bg);padding:14px 0 10px}
.nav-panel{
  display:flex;align-items:center;gap:14px;
  min-height:68px;padding:10px 16px;
  background:var(--card);
  border:1px solid var(--border);
  border-radius:16px;
  box-shadow:var(--sh-1);
  transition:min-height .22s var(--ease),box-shadow .22s var(--ease);
}
.brand{display:inline-flex;align-items:center;gap:10px;flex:none}
.brand-mark{position:relative;width:36px;height:36px;border-radius:11px;background:var(--brand);flex:none;overflow:hidden}
.brand-mark::before{content:"";position:absolute;left:9px;right:9px;top:11px;height:2px;border-radius:2px;background:rgba(255,255,255,.92)}
.brand-mark::after{content:"";position:absolute;left:9px;bottom:10px;width:9px;height:9px;border-radius:3px;background:var(--accent)}
.brand-name{font-size:17px;font-weight:600;letter-spacing:.02em;white-space:nowrap}
.nav-links{display:flex;align-items:center;gap:6px;margin-left:6px;margin-right:auto}
.nav-links a{
  position:relative;display:inline-flex;align-items:center;height:38px;padding:0 14px;
  border-radius:var(--r-btn);font-size:14.5px;font-weight:500;color:var(--text-2);
  transition:background .2s var(--ease),color .2s var(--ease);
}
.nav-links a:hover{background:var(--brand-25);color:var(--brand)}
.nav-links a.is-active{background:var(--brand-50);color:var(--brand);font-weight:600;padding-left:17px}
.nav-links a.is-active::before{
  content:"";position:absolute;left:7px;top:50%;transform:translateY(-50%);
  width:3px;height:16px;border-radius:2px;background:var(--brand);
}
.nav-toggle{
  display:none;width:42px;height:42px;margin-left:auto;
  border:1px solid var(--border);border-radius:var(--r-btn);background:var(--card);
  align-items:center;justify-content:center;flex-direction:column;gap:5px;
  transition:border-color .2s var(--ease),background .2s var(--ease);
}
.nav-toggle:hover{border-color:var(--brand);background:var(--brand-25)}
.nav-toggle span{display:block;width:18px;height:2px;border-radius:2px;background:var(--text)}
.mobile-panel{display:none;margin-top:10px;padding:14px;background:var(--card);border:1px solid var(--border);border-radius:16px;box-shadow:var(--sh-1)}
.mobile-panel.open{display:block}
.mobile-grid{display:grid;grid-template-columns:1fr 1fr;gap:10px}
.mobile-grid a{display:flex;align-items:center;height:44px;padding:0 14px;border-radius:var(--r-btn);background:var(--brand-25);font-size:14.5px;font-weight:500;color:var(--text-2)}
.mobile-grid a.is-active{background:var(--brand-50);color:var(--brand);font-weight:600}
.mobile-cta{margin-top:12px;width:100%}

/* 按钮 */
.btn{
  display:inline-flex;align-items:center;justify-content:center;gap:8px;
  height:46px;padding:0 26px;border-radius:var(--r-btn);
  font-size:15px;font-weight:600;border:1px solid transparent;
  transition:transform .18s var(--ease),background .18s var(--ease),box-shadow .18s var(--ease),border-color .18s var(--ease),color .18s var(--ease);
}
.btn svg{flex:none}
.btn-primary{background:var(--brand);color:#fff;box-shadow:0 6px 18px rgba(27,74,156,.18)}
.btn-primary:hover{background:var(--brand-dark);transform:translateY(-1px);box-shadow:0 10px 24px rgba(27,74,156,.26)}
.btn-primary:active{transform:none;box-shadow:0 4px 12px rgba(27,74,156,.2)}
.btn-ghost{background:var(--card);border-color:#D7E1F2;color:var(--brand)}
.btn-ghost:hover{border-color:var(--brand);background:#F3F7FE}
.btn-accent{background:var(--accent);color:#fff;box-shadow:0 6px 18px rgba(255,107,74,.2)}
.btn-accent:hover{background:var(--accent-dark);transform:translateY(-1px)}
.btn-sm{height:40px;padding:0 18px;font-size:14px}
.btn:disabled{opacity:.45;cursor:not-allowed;transform:none;box-shadow:none}
.text-link{display:inline-flex;align-items:center;gap:6px;font-size:14.5px;font-weight:600;color:var(--brand)}
.text-link svg{transition:transform .2s var(--ease)}
.text-link:hover{text-decoration:underline;text-underline-offset:4px}
.text-link:hover svg{transform:translateX(4px)}

/* 徽章与标签 */
.badge{display:inline-flex;align-items:center;height:30px;padding:0 14px;border-radius:var(--r-pill);font-size:13px;font-weight:500;background:var(--brand-25);border:1px solid var(--border);color:var(--text-2)}
.badge--accent{background:var(--accent-50);border-color:transparent;color:var(--accent-dark)}
.badge--cyan{background:rgba(23,162,166,.1);border-color:transparent;color:var(--cyan-dark)}
.tag{display:inline-flex;align-items:center;height:22px;padding:0 10px;border-radius:var(--r-pill);font-size:12px;font-weight:500;background:var(--brand-50);color:var(--brand);white-space:nowrap}
.tag--cyan{background:rgba(23,162,166,.12);color:var(--cyan-dark)}
.tag--accent{background:var(--accent-50);color:var(--accent-dark)}

/* Hero */
.hero{position:relative;overflow:hidden;padding:24px 0 40px}
.hero-bg{position:absolute;inset:0;background:linear-gradient(180deg,#FFFFFF 0%,#F0F5FD 100%);z-index:0}
.hero-bg::after{
  content:"";position:absolute;inset:0;
  background-image:linear-gradient(rgba(27,74,156,.055) 1px,transparent 1px),linear-gradient(90deg,rgba(27,74,156,.055) 1px,transparent 1px);
  background-size:52px 52px;
}
.hero-inner{position:relative;z-index:1;display:grid;grid-template-columns:1.02fr .98fr;gap:56px;align-items:center;min-height:540px}
.hero-eyebrow{display:inline-flex;align-items:center;gap:8px;height:30px;padding:0 14px;border-radius:var(--r-pill);background:var(--brand-50);color:var(--brand);font-size:13px;font-weight:600;letter-spacing:.04em}
.hero h1{font-size:42px;line-height:1.26;margin-top:20px;letter-spacing:-.01em}
.hero-sub{margin-top:18px;font-size:17px;line-height:1.85;color:var(--text-2);max-width:540px}
.hero-badges{display:flex;flex-wrap:wrap;gap:10px;margin-top:24px}
.hero-actions{display:flex;flex-wrap:wrap;gap:12px;margin-top:32px}
.hero-visual{position:relative;padding-bottom:36px}
.hero-poster{position:relative;border-radius:var(--r-lg);overflow:hidden;box-shadow:var(--sh-1);aspect-ratio:16/11;background:var(--bg-alt)}
.hero-poster img{width:100%;height:100%;object-fit:cover}
.hero-mini{
  position:absolute;right:0;bottom:0;width:210px;
  display:flex;align-items:center;gap:12px;
  padding:10px;background:var(--card);border:1px solid var(--border);
  border-radius:var(--r-md);box-shadow:var(--sh-1);
}
.hero-mini img{width:56px;height:74px;border-radius:10px;object-fit:cover;background:var(--bg-alt);flex:none}
.hero-mini strong{display:block;font-size:14px;font-weight:600;color:var(--text)}
.hero-mini span{display:block;margin-top:2px;font-size:12.5px;color:var(--text-3)}

/* 内容卡片 */
.card{
  display:block;background:var(--card);border:1px solid var(--border);border-radius:var(--r-md);
  overflow:hidden;
  transition:transform .22s var(--ease),box-shadow .22s var(--ease),border-color .22s var(--ease);
}
.card:hover{transform:translateY(-4px);box-shadow:var(--sh-2);border-color:#D7E1F2}
.card-media{position:relative;overflow:hidden;background:var(--bg-alt)}
.card-media img{width:100%;height:100%;object-fit:cover;transition:transform .35s var(--ease)}
.card:hover .card-media img{transform:scale(1.03)}
.card-play{
  position:absolute;inset:0;display:flex;align-items:center;justify-content:center;
  background:linear-gradient(180deg,rgba(16,26,43,0) 42%,rgba(16,26,43,.48));
  opacity:0;transition:opacity .24s var(--ease);
}
.card:hover .card-play{opacity:1}
.card-play i{display:flex;align-items:center;justify-content:center;width:44px;height:44px;border-radius:50%;background:rgba(255,255,255,.94);color:var(--brand)}
.card-body{padding:12px 14px 16px}
.card-title{font-size:15px;font-weight:600;line-height:1.55;display:-webkit-box;-webkit-line-clamp:2;-webkit-box-orient:vertical;overflow:hidden;min-height:46px}
.card-meta{display:flex;align-items:center;gap:8px;margin-top:10px;font-size:12.5px;color:var(--text-3)}

/* 横滑片库 */
.rail-wrap{position:relative}
.rail{
  display:flex;gap:16px;overflow-x:auto;scroll-snap-type:x mandatory;
  padding:6px 2px 18px;scrollbar-width:none;-ms-overflow-style:none;
}
.rail::-webkit-scrollbar{display:none}
.rail > *{scroll-snap-align:start}
.rail-card{flex:0 0 200px;width:200px}
.rail-card .card-media{aspect-ratio:3/4}
.rail-btn{
  position:absolute;top:50%;transform:translateY(-50%);z-index:3;
  display:flex;align-items:center;justify-content:center;
  width:40px;height:40px;border-radius:50%;
  background:var(--card);border:1px solid var(--border);box-shadow:var(--sh-1);color:var(--text-2);
  transition:color .2s var(--ease),border-color .2s var(--ease),transform .2s var(--ease);
}
.rail-btn:hover{color:var(--brand);border-color:var(--brand)}
.rail-btn.prev{left:-14px}
.rail-btn.next{right:-14px}

/* 热播排行 */
.rank-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:16px}
.rank-item{
  display:flex;align-items:center;gap:14px;padding:12px;
  background:var(--card);border:1px solid var(--border);border-radius:var(--r-md);
  transition:transform .22s var(--ease),box-shadow .22s var(--ease),border-color .22s var(--ease);
}
.rank-item:hover{transform:translateY(-3px);box-shadow:var(--sh-2);border-color:#D7E1F2}
.rank-no{flex:none;width:38px;font-size:26px;font-weight:600;color:#D6DFEE;letter-spacing:-.02em;transition:color .2s var(--ease)}
.rank-item:hover .rank-no{color:var(--accent)}
.rank-thumb{flex:none;width:96px;height:64px;border-radius:10px;overflow:hidden;background:var(--bg-alt)}
.rank-thumb img{width:100%;height:100%;object-fit:cover}
.rank-info{min-width:0}
.rank-info strong{display:block;font-size:15px;font-weight:600;white-space:nowrap;overflow:hidden;text-overflow:ellipsis}
.rank-info em{display:block;margin-top:4px;font-style:normal;font-size:12.5px;color:var(--text-3);white-space:nowrap;overflow:hidden;text-overflow:ellipsis}

/* 非对称片单 */
.asym{display:grid;grid-template-columns:340px 1fr;gap:56px;align-items:start}
.asym-left{position:sticky;top:110px}
.asym-desc{margin-top:14px;font-size:15px;line-height:1.85;color:var(--text-2)}
.asym-left .btn{margin-top:24px}
.asym-list{background:var(--card);border:1px solid var(--border);border-radius:var(--r-lg);padding:6px 20px;box-shadow:var(--sh-1)}
.asym-list li + li{border-top:1px solid var(--line)}
.asym-list a{display:grid;grid-template-columns:44px 1fr auto;gap:16px;align-items:center;padding:20px 4px;transition:background .2s var(--ease)}
.asym-list a:hover{background:var(--brand-25)}
.asym-no{font-size:15px;font-weight:600;color:var(--text-3);letter-spacing:.02em}
.asym-text strong{display:block;font-size:16px;font-weight:600}
.asym-text em{display:block;margin-top:4px;font-style:normal;font-size:13.5px;color:var(--text-2);line-height:1.7}

/* 网格 */
.grid-4{display:grid;grid-template-columns:repeat(4,1fr);gap:20px}
.grid-4 .card-media{aspect-ratio:4/3}
.grid-2{display:grid;grid-template-columns:repeat(2,1fr);gap:24px}
.feature-card{position:relative;display:block;border-radius:var(--r-lg);overflow:hidden;aspect-ratio:16/9;background:var(--bg-alt);box-shadow:var(--sh-1)}
.feature-card img{width:100%;height:100%;object-fit:cover;transition:transform .4s var(--ease)}
.feature-card:hover img{transform:scale(1.04)}
.feature-overlay{position:absolute;inset:auto 0 0 0;padding:28px;color:#fff;background:linear-gradient(180deg,rgba(16,26,43,0) 0%,rgba(16,26,43,.8) 100%)}
.feature-overlay h3{margin-top:12px;font-size:21px;font-weight:600}
.feature-overlay p{margin-top:8px;font-size:14px;line-height:1.7;color:rgba(255,255,255,.82)}

/* 最新信息 */
.news-grid{display:grid;grid-template-columns:repeat(2,1fr);gap:20px}
.news-card{
  display:flex;flex-direction:column;padding:24px;
  background:var(--card);border:1px solid var(--border);border-radius:var(--r-md);
  transition:transform .22s var(--ease),box-shadow .22s var(--ease),border-color .22s var(--ease);
}
.news-card:hover{transform:translateY(-4px);box-shadow:var(--sh-2);border-color:#D7E1F2}
.news-top{display:flex;align-items:center;justify-content:space-between;gap:12px;margin-bottom:14px}
.news-date{font-size:12.5px;color:var(--text-3)}
.news-card h3{font-size:17px;line-height:1.6;display:-webkit-box;-webkit-line-clamp:2;-webkit-box-orient:vertical;overflow:hidden}
.news-card p{margin-top:10px;font-size:14.5px;line-height:1.8;color:var(--text-2);display:-webkit-box;-webkit-line-clamp:2;-webkit-box-orient:vertical;overflow:hidden}
.news-more{display:inline-flex;align-items:center;gap:6px;margin-top:18px;font-size:13.5px;font-weight:600;color:var(--brand)}
.news-card:hover .news-more svg{transform:translateX(4px)}
.news-more svg{transition:transform .2s var(--ease)}
.empty{grid-column:1/-1;padding:52px 24px;text-align:center;background:var(--card);border:1px solid var(--border);border-radius:var(--r-md)}
.empty p{font-size:15px;color:var(--text-2)}
.empty .btn{margin-top:20px}

/* FAQ */
.faq-list{background:var(--card);border:1px solid var(--border);border-radius:var(--r-lg);overflow:hidden;box-shadow:var(--sh-1)}
.faq-item + .faq-item{border-top:1px solid var(--line)}
.faq-item summary{
  list-style:none;display:flex;align-items:center;justify-content:space-between;gap:20px;
  padding:22px 28px;font-size:16px;font-weight:600;color:var(--text);
  transition:color .2s var(--ease),background .2s var(--ease);
}
.faq-item summary::-webkit-details-marker{display:none}
.faq-item summary:hover{color:var(--brand);background:var(--brand-25)}
.faq-icon{position:relative;flex:none;width:22px;height:22px}
.faq-icon::before,.faq-icon::after{content:"";position:absolute;background:var(--brand);border-radius:2px;transition:transform .2s var(--ease),opacity .2s var(--ease)}
.faq-icon::before{left:0;top:10px;width:22px;height:2px}
.faq-icon::after{left:10px;top:0;width:2px;height:22px}
.faq-item[open] .faq-icon::after{transform:rotate(90deg);opacity:0}
.faq-answer{padding:0 28px 24px;max-width:900px;font-size:15px;line-height:1.85;color:var(--text-2)}

/* CTA */
.cta-band{
  display:flex;align-items:center;justify-content:space-between;gap:32px;
  padding:48px;border:1px solid var(--border);border-radius:var(--r-lg);
  background:linear-gradient(135deg,#E8EFFB 0%,#F2F6FD 100%);
}
.cta-band h2{font-size:26px}
.cta-band p{margin-top:12px;font-size:15px;line-height:1.8;color:var(--text-2);max-width:620px}

/* 页脚 */
.site-footer{margin-top:24px;padding:64px 0 0;background:var(--brand-25);border-top:1px solid var(--border)}
.footer-grid{display:grid;grid-template-columns:1.6fr 1fr 1fr 1.3fr;gap:40px}
.footer-brand p{margin-top:16px;font-size:14px;line-height:1.85;color:var(--text-2);max-width:340px}
.footer-title{margin-bottom:16px;font-size:14px;font-weight:600;color:var(--text)}
.footer-links li + li{margin-top:10px}
.footer-links a,.footer-links span{font-size:14px;color:var(--text-2)}
.footer-links a{transition:color .2s var(--ease)}
.footer-links a:hover{color:var(--brand);text-decoration:underline;text-underline-offset:4px}
.footer-note{font-size:14px;line-height:1.85;color:var(--text-2)}
.footer-bottom{
  display:flex;align-items:center;justify-content:space-between;gap:16px;flex-wrap:wrap;
  margin-top:48px;padding:20px 0;border-top:1px solid var(--border);
  font-size:12.5px;color:var(--text-3);
}

/* 响应式 */
@media (max-width:1279px){
  .grid-4{grid-template-columns:repeat(3,1fr)}
  .rank-grid{grid-template-columns:repeat(2,1fr)}
}
@media (max-width:1023px){
  .container{padding:0 24px}
  .nav-links,.nav-cta{display:none}
  .nav-toggle{display:flex}
  .hero{padding:12px 0 24px}
  .hero-inner{grid-template-columns:1fr;gap:36px;min-height:0;padding:24px 0 8px}
  .hero h1{font-size:34px}
  .hero-visual{padding-bottom:0}
  .hero-mini{position:static;width:100%;margin-top:14px}
  .grid-4{grid-template-columns:repeat(2,1fr)}
  .grid-2{grid-template-columns:1fr}
  .asym{grid-template-columns:1fr;gap:28px}
  .asym-left{position:static}
  .news-grid{grid-template-columns:1fr}
  .footer-grid{grid-template-columns:1fr 1fr;gap:32px}
  .cta-band{flex-direction:column;align-items:flex-start;padding:36px}
  .section{padding:60px 0}
}
@media (max-width:767px){
  .container{padding:0 20px}
  .section{padding:48px 0}
  .h2{font-size:23px}
  .section-head{margin-bottom:24px}
  .hero h1{font-size:28px}
  .hero-sub{font-size:15.5px}
  .hero-actions .btn{flex:1 1 100%}
  .rail-card{flex:0 0 160px;width:160px}
  .rail-btn{display:none}
  .rank-grid{grid-template-columns:1fr}
  .grid-4{grid-template-columns:1fr}
  .asym-list{padding:4px 16px}
  .asym-list a{grid-template-columns:34px 1fr;gap:12px}
  .asym-list a .tag{grid-column:2;justify-self:start;margin-top:8px}
  .news-card{padding:20px}
  .faq-item summary{padding:18px 20px;font-size:15px}
  .faq-answer{padding:0 20px 20px}
  .cta-band{padding:28px}
  .cta-band h2{font-size:21px}
  .cta-band .btn{width:100%}
  .footer-grid{grid-template-columns:1fr}
  .footer-bottom{flex-direction:column;align-items:flex-start;margin-top:32px}
}
@media (max-width:480px){
  .hero h1{font-size:25px}
  .hero-badges .badge{font-size:12px;padding:0 11px}
  .brand-name{font-size:15.5px}
}
@media (prefers-reduced-motion: reduce){
  *{transition:none !important;animation:none !important}
  html{scroll-behavior:auto}
  .card:hover,.news-card:hover,.rank-item:hover{transform:none}
  .card:hover .card-media img,.feature-card:hover img{transform:none}
}

/* roulang page: article */
:root{
  --brand:#1B4A9C;
  --brand-hover:#143A7E;
  --brand-soft:#E8EFFB;
  --brand-soft-2:#F2F6FD;
  --accent:#FF6B4A;
  --accent-hover:#E85A38;
  --accent-soft:#FFEDE7;
  --teal:#17A2A6;
  --teal-soft:#E6F6F6;
  --bg:#F6F8FC;
  --card:#FFFFFF;
  --alt:#EEF3FA;
  --text:#101A2B;
  --text-2:#5A6B85;
  --text-3:#8A99B0;
  --border:#E3E9F3;
  --divider:#EDF1F8;
  --ok:#1E9E6A;
  --warn:#D98A1F;
  --err:#D64545;
  --r-lg:18px;
  --r-md:14px;
  --r-img:12px;
  --r-btn:10px;
  --r-pill:999px;
  --sh-card:0 1px 2px rgba(16,26,43,.04), 0 8px 24px rgba(16,26,43,.06);
  --sh-hover:0 12px 32px rgba(16,26,43,.10);
  --container:1200px;
}
*,*::before,*::after{box-sizing:border-box}
html{-webkit-text-size-adjust:100%;scroll-behavior:smooth}
body{
  margin:0;
  font-family:"PingFang SC","Hiragino Sans GB","Microsoft YaHei",system-ui,-apple-system,"Segoe UI",sans-serif;
  font-size:16px;
  line-height:1.8;
  color:var(--text);
  background:var(--bg);
  -webkit-font-smoothing:antialiased;
}
img{max-width:100%;display:block;border:0}
a{color:inherit;text-decoration:none}
button{font:inherit;color:inherit;background:none;border:0;cursor:pointer}
ul,ol{margin:0;padding:0;list-style:none}
h1,h2,h3,h4,p{margin:0}
h1,h2,h3,h4{line-height:1.35}
:focus-visible{outline:2px solid var(--accent);outline-offset:2px;border-radius:6px}
.container{width:100%;max-width:var(--container);margin:0 auto;padding:0 20px}
@media(min-width:768px){.container{padding:0 32px}}

/* ---------- 按钮 ---------- */
.btn{
  display:inline-flex;align-items:center;justify-content:center;gap:8px;
  padding:12px 24px;border-radius:var(--r-btn);border:1px solid transparent;
  font-size:15px;font-weight:600;line-height:1;white-space:nowrap;
  transition:transform .2s ease-out,background-color .2s ease-out,border-color .2s ease-out,box-shadow .2s ease-out,color .2s ease-out;
}
.btn svg{width:16px;height:16px}
.btn-sm{padding:10px 18px;font-size:14px}
.btn-primary{background:var(--brand);color:#fff}
.btn-primary:hover{background:var(--brand-hover);transform:translateY(-1px);box-shadow:0 10px 22px rgba(16,26,43,.16)}
.btn-primary:active{transform:translateY(0);box-shadow:none}
.btn-ghost{background:#fff;border-color:#D7E1F2;color:var(--brand)}
.btn-ghost:hover{border-color:var(--brand);background:#F3F7FE}
.btn-accent{background:var(--accent);color:#fff}
.btn-accent:hover{background:var(--accent-hover);transform:translateY(-1px);box-shadow:0 10px 22px rgba(232,90,56,.22)}
.btn-accent:active{transform:translateY(0);box-shadow:none}
.btn-text{display:inline-flex;align-items:center;gap:6px;color:var(--brand);font-weight:600;font-size:15px;padding:4px 0}
.btn-text .arw{transition:transform .2s ease-out}
.btn-text:hover .arw{transform:translateX(4px)}
.btn-text:hover{text-decoration:underline;text-underline-offset:5px}
.btn[disabled],.btn.is-disabled{opacity:.45;cursor:not-allowed;transform:none;box-shadow:none}

/* ---------- 导航 ---------- */
.site-header{position:sticky;top:0;z-index:80;padding:12px 0;background:rgba(246,248,252,.96);border-bottom:1px solid transparent;transition:padding .2s ease-out,border-color .2s ease-out}
.site-header.is-stuck{padding:6px 0;border-bottom-color:var(--border)}
.nav-panel{
  display:flex;align-items:center;gap:14px;
  min-height:64px;padding:10px 16px;
  background:#fff;border:1px solid var(--border);border-radius:16px;box-shadow:var(--sh-card);
  transition:min-height .2s ease-out,box-shadow .2s ease-out;
}
.site-header.is-stuck .nav-panel{min-height:56px;box-shadow:0 1px 2px rgba(16,26,43,.05),0 10px 26px rgba(16,26,43,.09)}
.brand{display:inline-flex;align-items:center;gap:10px;flex:0 0 auto}
.brand-mark{position:relative;width:30px;height:30px;border-radius:9px;background:var(--brand);display:inline-block;flex:0 0 auto}
.brand-mark::before{content:"";position:absolute;left:7px;top:7px;width:9px;height:9px;border-radius:2px;background:#fff}
.brand-mark::after{content:"";position:absolute;left:7px;top:20px;width:16px;height:2px;border-radius:2px;background:var(--accent)}
.brand-name{font-size:18px;font-weight:600;letter-spacing:.02em;color:var(--text)}
.nav-links{display:flex;align-items:center;gap:8px;margin-left:6px}
.nav-links a{display:inline-flex;align-items:center;height:40px;padding:0 14px;border-radius:10px;font-size:15px;color:var(--text-2);transition:background-color .2s ease-out,color .2s ease-out}
.nav-links a:hover{background:var(--brand-soft-2);color:var(--brand)}
.nav-links a.is-active{background:var(--brand-soft);color:var(--brand);font-weight:600}
.nav-cta{margin-left:auto}
.nav-toggle{display:none;margin-left:auto;width:42px;height:42px;border-radius:10px;border:1px solid var(--border);background:var(--brand-soft-2);flex-direction:column;align-items:center;justify-content:center;gap:4px}
.nav-toggle span{display:block;width:18px;height:2px;border-radius:2px;background:var(--text-2);transition:transform .2s ease-out,opacity .2s ease-out}
.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)}
.mobile-panel{display:none;margin-top:10px;padding:14px;background:#fff;border:1px solid var(--border);border-radius:16px;box-shadow:var(--sh-card)}
.mobile-panel.is-open{display:block}
.mobile-grid{display:grid;grid-template-columns:1fr 1fr;gap:10px}
.mobile-grid a{display:flex;align-items:center;height:46px;padding:0 14px;border-radius:10px;background:var(--brand-soft-2);color:var(--text-2);font-size:15px}
.mobile-grid a:hover{background:var(--brand-soft);color:var(--brand)}
.mobile-grid a.is-active{background:var(--brand-soft);color:var(--brand);font-weight:600}
.mobile-cta{width:100%;margin-top:12px}
@media(max-width:1023px){
  .nav-links,.nav-cta{display:none}
  .nav-toggle{display:flex}
}

/* ---------- 文章头部 ---------- */
.article-top{
  position:relative;
  padding:30px 0 44px;
  background-image:linear-gradient(rgba(255,255,255,.94),rgba(246,248,252,.99)),url('/assets/images/backpic/back-1.webp');
  background-size:cover;background-position:center;
  border-bottom:1px solid var(--border);
}
.breadcrumb{display:flex;flex-wrap:wrap;align-items:center;gap:8px;font-size:13px;color:var(--text-3)}
.breadcrumb a{color:var(--text-2)}
.breadcrumb a:hover{color:var(--brand);text-decoration:underline;text-underline-offset:4px}
.breadcrumb .sep{color:#C4CEDF}
.breadcrumb .now{color:var(--text-3)}
.article-title-block{margin-top:22px;max-width:860px}
.cat-chip{display:inline-flex;align-items:center;height:28px;padding:0 14px;border-radius:var(--r-pill);background:var(--teal-soft);color:#0E7F82;font-size:12.5px;font-weight:600;letter-spacing:.02em}
.article-title-block h1{margin-top:16px;font-size:clamp(26px,4.6vw,42px);font-weight:600;letter-spacing:-.01em;color:var(--text)}
.meta-row{margin-top:20px;display:flex;flex-wrap:wrap;align-items:center;gap:10px 18px;font-size:13px;color:var(--text-3)}
.meta-row .mi{display:inline-flex;align-items:center;gap:6px}
.meta-row .dot{width:4px;height:4px;border-radius:50%;background:#CDD7E6}
.meta-row .num{font-variant-numeric:tabular-nums;color:var(--text-2)}

/* ---------- 布局 ---------- */
.article-layout{display:grid;grid-template-columns:minmax(0,1fr);gap:36px;padding:44px 0 8px}
.article-main{max-width:800px;margin:0 auto;min-width:0}
.article-side{display:none}
@media(min-width:1200px){
  .article-layout{grid-template-columns:minmax(0,1fr) 280px;gap:48px;align-items:start}
  .article-main{max-width:none;margin:0}
  .article-side{display:block;position:sticky;top:96px}
}
.rule{height:1px;background:var(--divider);border:0;margin:0 0 26px}

/* ---------- 正文阅读区 ---------- */
.article-body{
  background:#fff;border:1px solid var(--border);border-radius:var(--r-lg);
  padding:28px 22px;box-shadow:var(--sh-card);
  font-size:17px;line-height:1.9;color:#1B2740;
}
@media(min-width:768px){.article-body{padding:40px 44px}}
.article-body > * + *{margin-top:1.2em}
.article-body p{margin:0}
.article-body h2{
  position:relative;margin:44px 0 0;padding:26px 0 0 14px;
  font-size:23px;font-weight:600;line-height:1.45;color:var(--text);
  border-top:1px solid var(--divider);
}
.article-body h2::before{content:"";position:absolute;left:0;top:30px;width:4px;height:20px;border-radius:3px;background:var(--brand)}
.article-body h3{margin:32px 0 0;font-size:18px;font-weight:600;color:var(--text)}
.article-body h4{margin:24px 0 0;font-size:16px;font-weight:600;color:var(--text-2)}
.article-body a{color:var(--brand);text-decoration:underline;text-underline-offset:4px;text-decoration-thickness:1px}
.article-body a:hover{color:var(--brand-hover);text-underline-offset:6px}
.article-body strong{font-weight:600;color:var(--text)}
.article-body blockquote{
  margin:26px 0;padding:16px 22px;background:var(--brand-soft-2);
  border-left:3px solid var(--brand);border-radius:0 12px 12px 0;color:var(--text-2);font-size:16px;
}
.article-body blockquote p{margin:0}
.article-body ul,.article-body ol{margin:18px 0;padding-left:22px}
.article-body ul{list-style:disc}
.article-body ol{list-style:decimal}
.article-body li{margin:8px 0}
.article-body ul li::marker{color:var(--brand)}
.article-body ol li::marker{color:var(--brand);font-variant-numeric:tabular-nums}
.article-body img{width:100%;border-radius:var(--r-img);margin:26px 0 0;background:var(--alt)}
.article-body figure{margin:26px 0 0}
.article-body figcaption{margin-top:10px;font-size:13px;color:var(--text-3);line-height:1.7;text-align:center}
.article-body table{width:100%;border-collapse:collapse;margin:26px 0;font-size:15px;background:#fff}
.article-body th,.article-body td{padding:12px 14px;border:1px solid var(--border);text-align:left;vertical-align:top}
.article-body th{background:var(--brand-soft-2);font-weight:600;color:var(--text-2)}
.article-body hr{margin:34px 0;border:0;height:1px;background:var(--divider)}
@media(max-width:767px){
  .article-body{font-size:16.5px;padding:22px 18px}
  .article-body h2{font-size:20px}
}

/* ---------- 标签行 ---------- */
.tag-row{display:flex;flex-wrap:wrap;align-items:center;gap:10px;margin-top:26px}
.tag-row .label{font-size:13px;color:var(--text-3);margin-right:2px}
.tag{display:inline-flex;align-items:center;height:30px;padding:0 14px;border-radius:var(--r-pill);background:var(--brand-soft-2);color:var(--brand);font-size:13px;transition:background-color .2s ease-out,color .2s ease-out}
.tag:hover{background:var(--brand-soft)}
.tag.teal{background:var(--teal-soft);color:#0E7F82}
.tag.teal:hover{background:#D8F0F0}

/* ---------- 侧栏 ---------- */
.side-card{background:#fff;border:1px solid var(--border);border-radius:var(--r-md);padding:18px;box-shadow:var(--sh-card)}
.side-card + .side-card{margin-top:20px}
.side-title{font-size:14px;font-weight:600;color:var(--text);display:flex;align-items:center;gap:8px}
.side-title::before{content:"";width:4px;height:14px;border-radius:3px;background:var(--accent)}
.side-list{margin-top:14px}
.side-list li + li{border-top:1px solid var(--divider)}
.side-list a{display:block;padding:12px 0;font-size:14px;color:var(--text-2);line-height:1.6;transition:color .2s ease-out}
.side-list a:hover{color:var(--brand)}
.side-list .tip{display:block;margin-top:4px;font-size:12.5px;color:var(--text-3)}
.side-cover{border-radius:var(--r-img);overflow:hidden;aspect-ratio:16/10;background:var(--alt)}
.side-cover img{width:100%;height:100%;object-fit:cover}
.side-desc{margin-top:12px;font-size:13.5px;line-height:1.8;color:var(--text-2)}

/* ---------- 空态 ---------- */
.empty-state{
  background:#fff;border:1px solid var(--border);border-radius:var(--r-lg);
  padding:56px 24px;text-align:center;box-shadow:var(--sh-card);
}
.empty-mark{width:56px;height:56px;margin:0 auto 18px;border-radius:16px;background:var(--alt);display:flex;align-items:center;justify-content:center;color:var(--text-3);font-size:22px}
.empty-state h2{font-size:20px;font-weight:600}
.empty-state p{margin-top:10px;font-size:14.5px;color:var(--text-2)}
.empty-state .btn{margin-top:22px}

/* ---------- 相关推荐 ---------- */
.related{padding:64px 0 0}
.section-head{display:flex;flex-wrap:wrap;align-items:flex-end;justify-content:space-between;gap:14px;margin-bottom:26px}
.section-head h2{font-size:26px;font-weight:600;letter-spacing:-.01em}
.section-head p{margin-top:8px;font-size:14.5px;color:var(--text-2);max-width:620px}
.card-grid{display:grid;grid-template-columns:1fr;gap:22px}
@media(min-width:560px){.card-grid{grid-template-columns:repeat(2,minmax(0,1fr))}}
@media(min-width:1024px){.card-grid{grid-template-columns:repeat(4,minmax(0,1fr))}}
.card{
  display:flex;flex-direction:column;background:#fff;border:1px solid var(--border);
  border-radius:var(--r-md);overflow:hidden;box-shadow:var(--sh-card);
  transition:transform .22s ease-out,box-shadow .22s ease-out;
}
.card:hover{transform:translateY(-4px);box-shadow:var(--sh-hover)}
.card-media{position:relative;aspect-ratio:16/10;background:var(--alt);overflow:hidden}
.card-media img{width:100%;height:100%;object-fit:cover;transition:transform .3s ease-out}
.card:hover .card-media img{transform:scale(1.03)}
.card-badge{position:absolute;left:12px;top:12px;height:24px;padding:0 10px;border-radius:var(--r-pill);background:var(--accent);color:#fff;font-size:12px;font-weight:600;display:inline-flex;align-items:center}
.card-body{padding:16px 18px 18px;display:flex;flex-direction:column;flex:1}
.card-title{font-size:16px;font-weight:600;line-height:1.5;display:-webkit-box;-webkit-line-clamp:2;-webkit-box-orient:vertical;overflow:hidden}
.card-sub{margin-top:auto;padding-top:12px;display:flex;align-items:center;gap:10px;font-size:12.5px;color:var(--text-3)}
.card-sub .mini{display:inline-flex;align-items:center;height:22px;padding:0 9px;border-radius:var(--r-pill);background:var(--brand-soft-2);color:var(--brand);font-size:12px}

/* ---------- FAQ ---------- */
.faq{padding:64px 0 0}
.faq-wrap{background:#fff;border:1px solid var(--border);border-radius:var(--r-lg);box-shadow:var(--sh-card);padding:8px 24px}
.faq-item{border-bottom:1px solid var(--divider)}
.faq-item:last-child{border-bottom:0}
.faq-q{width:100%;display:flex;align-items:center;justify-content:space-between;gap:18px;padding:20px 0;font-size:16px;font-weight:600;text-align:left;color:var(--text)}
.faq-q:hover{color:var(--brand)}
.chev{flex:0 0 auto;width:22px;height:22px;border-radius:6px;background:var(--brand-soft-2);color:var(--brand);display:inline-flex;align-items:center;justify-content:center;font-size:15px;line-height:1;transition:transform .2s ease-out,background-color .2s ease-out}
.faq-item.is-open .chev{transform:rotate(45deg);background:var(--brand-soft)}
.faq-a{display:none;padding:0 0 22px;font-size:15px;line-height:1.85;color:var(--text-2);max-width:820px}
.faq-item.is-open .faq-a{display:block}

/* ---------- CTA ---------- */
.cta-band{
  margin:64px 0 0;padding:32px;
  background:var(--brand-soft-2);border:1px solid var(--border);border-radius:var(--r-lg);
  display:flex;flex-wrap:wrap;align-items:center;justify-content:space-between;gap:20px;
}
.cta-band h2{font-size:22px;font-weight:600}
.cta-band p{margin-top:10px;font-size:14.5px;color:var(--text-2);max-width:560px}
.cta-actions{display:flex;flex-wrap:wrap;gap:12px}

/* ---------- 页脚 ---------- */
.site-footer{margin-top:72px;padding:56px 0 24px;background:var(--brand-soft-2);border-top:1px solid var(--border)}
.footer-grid{display:grid;grid-template-columns:1fr;gap:32px}
@media(min-width:768px){.footer-grid{grid-template-columns:2fr 1fr 1fr 1.3fr}}
.footer-title{font-size:14px;font-weight:600;color:var(--text);margin-bottom:14px}
.footer-links li{margin-bottom:10px;font-size:14px;color:var(--text-2)}
.footer-links a{transition:color .2s ease-out}
.footer-links a:hover{color:var(--brand);text-decoration:underline;text-underline-offset:4px}
.footer-brand p{margin-top:14px;font-size:14px;line-height:1.85;color:var(--text-2);max-width:380px}
.footer-note{font-size:14px;line-height:1.85;color:var(--text-2)}
.footer-bottom{
  margin-top:42px;padding-top:20px;border-top:1px solid var(--border);
  display:flex;flex-wrap:wrap;gap:8px 20px;justify-content:space-between;
  font-size:12.5px;color:var(--text-3);
}

@media(prefers-reduced-motion:reduce){
  html{scroll-behavior:auto}
  *,*::before,*::after{transition:none!important;animation:none!important}
  .card:hover{transform:none}
  .btn:hover{transform:none}
}

/* roulang page: category1 */
:root{
  --brand:#1B4A9C;
  --brand-hover:#143A7E;
  --brand-soft:#E8EFFB;
  --soft-2:#F2F6FD;
  --accent:#FF6B4A;
  --accent-hover:#E85A38;
  --accent-soft:#FFEDE7;
  --teal:#17A2A6;
  --bg:#F6F8FC;
  --bg-alt:#EEF3FA;
  --card:#FFFFFF;
  --text:#101A2B;
  --text-2:#5A6B85;
  --text-3:#8A99B0;
  --border:#E3E9F3;
  --line:#EDF1F8;
  --ok:#1E9E6A;
  --warn:#D98A1F;
  --err:#D64545;
  --radius-lg:18px;
  --radius:14px;
  --radius-img:12px;
  --radius-btn:10px;
  --shadow-sm:0 1px 2px rgba(16,26,43,.04), 0 8px 24px rgba(16,26,43,.06);
  --shadow-lg:0 12px 32px rgba(16,26,43,.10);
  --font-cn:"PingFang SC","Hiragino Sans GB","Microsoft YaHei",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-cn);
  font-size:16px;
  line-height:1.8;
  color:var(--text);
  background:var(--bg);
  font-variant-numeric:tabular-nums;
}
img{max-width:100%;display:block}
a{color:var(--brand);text-decoration:none}
a:hover{color:var(--brand-hover)}
button{font:inherit;color:inherit}
h1,h2,h3,h4,p,ul,ol{margin:0}
ul,ol{padding:0;list-style:none}
:focus-visible{outline:2px solid var(--accent);outline-offset:2px;border-radius:6px}
.container{width:100%;max-width:1200px;margin:0 auto;padding:0 20px}
@media (min-width:768px){.container{padding:0 32px}}

/* ---------- 顶部导航 ---------- */
.site-header{position:sticky;top:0;z-index:80;padding:16px 0 0;transition:padding .22s ease-out}
.site-header.is-stuck{padding:8px 0 0}
.nav-panel{
  display:flex;align-items:center;gap:14px;
  min-height:68px;padding:0 16px;
  background:rgba(255,255,255,.96);
  border:1px solid var(--border);
  border-radius:16px;
  box-shadow:var(--shadow-sm);
  transition:min-height .22s ease-out,box-shadow .22s ease-out,background .22s ease-out;
}
.site-header.is-stuck .nav-panel{min-height:60px;box-shadow:0 8px 26px rgba(16,26,43,.10);background:rgba(255,255,255,.94)}
.brand{display:inline-flex;align-items:center;gap:10px;color:var(--text);font-weight:600;font-size:17px;letter-spacing:.2px}
.brand:hover{color:var(--text)}
.brand-mark{position:relative;flex:none;width:30px;height:30px;border-radius:9px;background:var(--brand)}
.brand-mark::before{content:"";position:absolute;top:7px;left:6px;right:6px;height:9px;border-radius:3px;background:#fff;opacity:.92}
.brand-mark::after{content:"";position:absolute;left:6px;right:15px;bottom:7px;height:3px;border-radius:2px;background:var(--accent)}
.nav-links{display:flex;align-items:center;gap:6px;margin-left:auto}
.nav-links a{
  display:inline-flex;align-items:center;height:38px;padding:0 14px;border-radius:var(--radius-btn);
  font-size:14.5px;color:var(--text-2);transition:background .18s ease-out,color .18s ease-out;
}
.nav-links a:hover{background:var(--soft-2);color:var(--brand)}
.nav-links a.is-active{background:var(--brand-soft);color:var(--brand);font-weight:600;box-shadow:inset 3px 0 0 var(--brand)}
.nav-cta{flex:none}
.nav-toggle{
  display:none;flex:none;width:42px;height:42px;border-radius:var(--radius-btn);
  border:1px solid var(--border);background:#fff;cursor:pointer;
  flex-direction:column;align-items:center;justify-content:center;gap:4px;
  transition:border-color .18s ease-out,background .18s ease-out;
}
.nav-toggle span{display:block;width:18px;height:2px;border-radius:2px;background:var(--text-2);transition:transform .2s ease-out,opacity .2s ease-out}
.nav-toggle:hover{border-color:var(--brand);background:var(--soft-2)}
.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)}
.mobile-panel{display:none;margin-top:10px;padding:16px;background:#fff;border:1px solid var(--border);border-radius:16px;box-shadow:var(--shadow-sm)}
.mobile-panel.is-open{display:block}
.mobile-grid{display:grid;grid-template-columns:1fr 1fr;gap:10px}
.mobile-grid a{
  display:flex;align-items:center;justify-content:center;min-height:44px;padding:8px 12px;
  border-radius:var(--radius-btn);background:var(--soft-2);color:var(--text-2);font-size:14.5px;
  transition:background .18s ease-out,color .18s ease-out;
}
.mobile-grid a:hover{background:var(--brand-soft);color:var(--brand)}
.mobile-grid a.is-active{background:var(--brand-soft);color:var(--brand);font-weight:600;box-shadow:inset 3px 0 0 var(--brand)}
.mobile-cta{margin-top:12px;width:100%}

/* ---------- 按钮 ---------- */
.btn{
  display:inline-flex;align-items:center;justify-content:center;gap:8px;
  padding:12px 24px;border:1px solid transparent;border-radius:var(--radius-btn);
  font-size:14.5px;font-weight:600;cursor:pointer;text-align:center;
  transition:background .18s ease-out,color .18s ease-out,border-color .18s ease-out,transform .18s ease-out,box-shadow .18s ease-out;
}
.btn-primary{background:var(--brand);color:#fff}
.btn-primary:hover{background:var(--brand-hover);color:#fff;transform:translateY(-1px);box-shadow:var(--shadow-sm)}
.btn-primary:active{transform:none;box-shadow:none}
.btn-ghost{background:#fff;border-color:#D7E1F2;color:var(--brand)}
.btn-ghost:hover{border-color:var(--brand);background:#F3F7FE;color:var(--brand-hover)}
.btn-accent{background:var(--accent);color:#fff}
.btn-accent:hover{background:var(--accent-hover);color:#fff;transform:translateY(-1px)}
.btn-accent:active{transform:none}
.btn-sm{padding:9px 16px;font-size:14px}
.btn[disabled],.btn.is-disabled{opacity:.45;cursor:not-allowed;transform:none;box-shadow:none}
.text-link{display:inline-flex;align-items:center;gap:6px;font-size:14.5px;font-weight:600;color:var(--brand);text-decoration:none}
.text-link .arrow{transition:transform .18s ease-out}
.text-link:hover{color:var(--brand-hover);text-decoration:underline;text-underline-offset:4px}
.text-link:hover .arrow{transform:translateX(4px)}

/* ---------- Hero ---------- */
.hero-cat{position:relative;padding:56px 0 72px;overflow:hidden;background:linear-gradient(180deg,#fff 0%,#F0F5FD 100%)}
.hero-cat::before{
  content:"";position:absolute;inset:0;z-index:0;
  background:linear-gradient(180deg,rgba(255,255,255,.93) 0%,rgba(240,245,253,.96) 100%),url("/assets/images/backpic/back-2.webp") center/cover no-repeat;
}
.hero-cat::after{
  content:"";position:absolute;inset:0;z-index:0;pointer-events:none;opacity:.6;
  background-image:repeating-linear-gradient(115deg,rgba(27,74,156,.06) 0 1px,transparent 1px 88px);
}
.hero-inner{position:relative;z-index:1;display:grid;grid-template-columns:1fr;gap:36px}
@media (min-width:1024px){.hero-inner{grid-template-columns:1.05fr .95fr;gap:56px;align-items:center}}
.crumbs{display:flex;align-items:center;gap:8px;font-size:12.5px;color:var(--text-3);margin-bottom:18px}
.crumbs a{color:var(--text-3)}
.crumbs a:hover{color:var(--brand)}
.crumb-sep{color:#C6D1E3}
.hero-copy h1{
  font-size:clamp(28px,5vw,44px);line-height:1.28;font-weight:600;letter-spacing:.4px;
}
.hero-lead{margin-top:16px;font-size:17px;color:var(--text-2);max-width:560px}
.hero-badges{display:flex;flex-wrap:wrap;gap:8px;margin-top:22px}
.badge{
  display:inline-flex;align-items:center;gap:6px;padding:6px 14px;border-radius:999px;
  background:#fff;border:1px solid var(--border);color:var(--text-2);font-size:12.5px;
}
.badge-accent{background:var(--accent-soft);border-color:transparent;color:#C8452A;font-weight:600}
.badge-teal{background:rgba(23,162,166,.10);border-color:transparent;color:#0F7B7E;font-weight:600}
.hero-actions{display:flex;flex-wrap:wrap;gap:12px;margin-top:28px}
.hero-visual{position:relative}
.hero-poster{position:relative;border-radius:var(--radius-lg);overflow:hidden;box-shadow:var(--shadow-sm);aspect-ratio:16/10;background:var(--bg-alt)}
.hero-poster img{width:100%;height:100%;object-fit:cover}
.hero-cover-float{
  position:absolute;right:-6px;bottom:-22px;width:124px;aspect-ratio:3/4;border-radius:var(--radius-img);
  overflow:hidden;border:4px solid #fff;box-shadow:var(--shadow-lg);background:var(--bg-alt);
}
.hero-cover-float img{width:100%;height:100%;object-fit:cover}
@media (max-width:767px){.hero-cover-float{width:96px;bottom:-16px;right:0}}

/* ---------- 通用板块 ---------- */
.section{padding:72px 0}
.section-alt{background:var(--bg-alt)}
@media (max-width:767px){.section{padding:48px 0}}
.section-head{display:flex;flex-wrap:wrap;align-items:flex-end;justify-content:space-between;gap:16px;margin-bottom:28px}
.section-title{font-size:28px;font-weight:600;line-height:1.4}
.section-sub{margin-top:8px;font-size:14.5px;color:var(--text-2)}
.eyebrow{display:inline-block;margin-bottom:12px;font-size:12.5px;font-weight:600;letter-spacing:1px;color:var(--teal);text-transform:uppercase}
.divider{height:1px;background:var(--line);border:0;margin:0}

/* ---------- 数据卡 ---------- */
.stat-grid{display:grid;grid-template-columns:repeat(2,1fr);gap:16px}
@media (min-width:900px){.stat-grid{grid-template-columns:repeat(4,1fr);gap:24px}}
.stat-card{background:#fff;border:1px solid var(--border);border-radius:var(--radius);padding:22px 20px;box-shadow:var(--shadow-sm);transition:transform .2s ease-out,box-shadow .2s ease-out}
.stat-card:hover{transform:translateY(-4px);box-shadow:var(--shadow-lg)}
.stat-num{font-size:30px;font-weight:600;color:var(--brand);line-height:1.2}
.stat-label{margin-top:6px;font-size:13px;color:var(--text-2)}

/* ---------- 筛选标签条 ---------- */
.filter-bar{display:flex;flex-wrap:wrap;gap:10px;padding:14px;background:#fff;border:1px solid var(--border);border-radius:var(--radius);box-shadow:var(--shadow-sm);margin-bottom:26px}
.filter-chip{
  display:inline-flex;align-items:center;padding:8px 16px;border-radius:999px;
  border:1px solid var(--border);background:#fff;color:var(--text-2);font-size:14px;cursor:default;
  transition:background .18s ease-out,color .18s ease-out,border-color .18s ease-out;
}
.filter-chip:hover{border-color:var(--brand);color:var(--brand);background:var(--soft-2)}
.filter-chip.is-on{background:var(--brand-soft);border-color:transparent;color:var(--brand);font-weight:600}

/* ---------- 卡片网格 ---------- */
.card-grid{display:grid;grid-template-columns:1fr;gap:24px}
@media (min-width:700px){.card-grid{grid-template-columns:repeat(2,1fr)}}
@media (min-width:1024px){.card-grid{grid-template-columns:repeat(3,1fr)}}
.content-card{
  display:flex;flex-direction:column;background:#fff;border:1px solid var(--border);border-radius:var(--radius);
  overflow:hidden;box-shadow:var(--shadow-sm);color:inherit;
  transition:transform .22s ease-out,box-shadow .22s ease-out,border-color .22s ease-out;
}
.content-card:hover{transform:translateY(-4px);box-shadow:var(--shadow-lg);border-color:#D7E1F2;color:inherit}
.card-media{position:relative;aspect-ratio:16/10;background:var(--bg-alt);overflow:hidden}
.card-media img{width:100%;height:100%;object-fit:cover;transition:transform .3s ease-out}
.content-card:hover .card-media img{transform:scale(1.03)}
.card-media::after{
  content:"";position:absolute;inset:0;background:linear-gradient(180deg,rgba(16,26,43,0) 55%,rgba(16,26,43,.18) 100%);
  opacity:0;transition:opacity .22s ease-out;
}
.content-card:hover .card-media::after{opacity:1}
.card-play{
  position:absolute;top:50%;left:50%;width:46px;height:46px;margin:-23px 0 0 -23px;border-radius:50%;
  background:rgba(255,255,255,.92);box-shadow:0 6px 18px rgba(16,26,43,.18);
  display:flex;align-items:center;justify-content:center;opacity:0;transform:scale(.9);
  transition:opacity .22s ease-out,transform .22s ease-out;
}
.card-play::before{content:"";width:0;height:0;border-left:11px solid var(--brand);border-top:7px solid transparent;border-bottom:7px solid transparent;margin-left:3px}
.content-card:hover .card-play{opacity:1;transform:scale(1)}
.card-body{display:flex;flex-direction:column;gap:10px;padding:18px 18px 20px;flex:1}
.card-tagrow{display:flex;align-items:center;gap:8px;flex-wrap:wrap}
.card-tag{display:inline-flex;align-items:center;padding:4px 11px;border-radius:999px;background:rgba(23,162,166,.10);color:#0F7B7E;font-size:12.5px;font-weight:600}
.card-tag-hot{background:var(--accent-soft);color:#C8452A}
.card-title{font-size:17px;font-weight:600;line-height:1.5;display:-webkit-box;-webkit-line-clamp:2;-webkit-box-orient:vertical;overflow:hidden}
.card-desc{font-size:14px;color:var(--text-2);line-height:1.75;display:-webkit-box;-webkit-line-clamp:2;-webkit-box-orient:vertical;overflow:hidden}
.card-meta{margin-top:auto;padding-top:12px;border-top:1px solid var(--line);display:flex;align-items:center;justify-content:space-between;gap:10px;font-size:12.5px;color:var(--text-3)}
.card-score{color:var(--brand);font-weight:600}

/* ---------- 非对称图文 ---------- */
.split{display:grid;grid-template-columns:1fr;gap:32px;align-items:center}
@media (min-width:1024px){.split{grid-template-columns:.92fr 1.08fr;gap:56px}}
.split-media{border-radius:var(--radius-lg);overflow:hidden;box-shadow:var(--shadow-sm);aspect-ratio:4/3;background:var(--bg-alt)}
.split-media img{width:100%;height:100%;object-fit:cover}
.check-list{display:flex;flex-direction:column;gap:16px;margin-top:24px}
.check-list li{display:flex;gap:12px;align-items:flex-start}
.check-mark{
  flex:none;width:24px;height:24px;margin-top:5px;border-radius:8px;background:var(--brand-soft);
  display:flex;align-items:center;justify-content:center;color:var(--brand);font-size:13px;font-weight:700;
}
.check-list strong{display:block;font-size:15.5px;font-weight:600}
.check-list span{display:block;font-size:14px;color:var(--text-2);line-height:1.75}

/* ---------- 时间轴 ---------- */
.timeline{position:relative;display:grid;grid-template-columns:1fr;gap:20px}
@media (min-width:900px){.timeline{grid-template-columns:repeat(4,1fr);gap:24px}}
.tl-item{position:relative;background:#fff;border:1px solid var(--border);border-radius:var(--radius);padding:24px 20px;box-shadow:var(--shadow-sm);transition:transform .2s ease-out,box-shadow .2s ease-out}
.tl-item:hover{transform:translateY(-4px);box-shadow:var(--shadow-lg)}
.tl-index{display:inline-flex;align-items:center;justify-content:center;width:34px;height:34px;border-radius:10px;background:var(--brand-soft);color:var(--brand);font-weight:700;font-size:14px}
.tl-title{margin-top:14px;font-size:16.5px;font-weight:600}
.tl-text{margin-top:8px;font-size:14px;color:var(--text-2);line-height:1.75}

/* ---------- FAQ ---------- */
.faq{background:#fff;border:1px solid var(--border);border-radius:var(--radius-lg);box-shadow:var(--shadow-sm);overflow:hidden}
.faq-item + .faq-item{border-top:1px solid var(--line)}
.faq-q{
  width:100%;display:flex;align-items:center;justify-content:space-between;gap:16px;
  padding:20px 22px;background:transparent;border:0;text-align:left;cursor:pointer;
  font-size:16px;font-weight:600;color:var(--text);
  transition:background .18s ease-out,color .18s ease-out;
}
.faq-q:hover{background:var(--soft-2);color:var(--brand)}
.faq-icon{flex:none;position:relative;width:20px;height:20px}
.faq-icon::before,.faq-icon::after{content:"";position:absolute;background:var(--brand);border-radius:2px;transition:transform .2s ease-out,opacity .2s ease-out}
.faq-icon::before{top:9px;left:0;width:20px;height:2px}
.faq-icon::after{left:9px;top:0;width:2px;height:20px}
.faq-item.is-open .faq-icon::after{transform:scaleY(0);opacity:0}
.faq-a{max-height:0;overflow:hidden;transition:max-height .22s ease-out}
.faq-a p{padding:0 22px 20px;font-size:15px;color:var(--text-2);line-height:1.85}

/* ---------- CTA ---------- */
.cta-band{
  display:flex;flex-wrap:wrap;align-items:center;justify-content:space-between;gap:26px;
  background:var(--soft-2);border:1px solid var(--border);border-radius:var(--radius-lg);padding:40px 36px;
}
.cta-copy h2{font-size:26px;font-weight:600;line-height:1.4}
.cta-copy p{margin-top:10px;font-size:15px;color:var(--text-2);max-width:620px}
.cta-actions{display:flex;flex-wrap:wrap;gap:12px}
@media (max-width:520px){.cta-band{padding:28px 22px}}

/* ---------- 分页 ---------- */
.pager{display:flex;flex-wrap:wrap;align-items:center;justify-content:center;gap:10px;margin-top:36px}
.pager a,.pager span{
  display:inline-flex;align-items:center;justify-content:center;min-width:36px;height:36px;padding:0 12px;
  border-radius:var(--radius-btn);border:1px solid var(--border);background:#fff;color:var(--text-2);font-size:14px;
  transition:background .18s ease-out,color .18s ease-out,border-color .18s ease-out;
}
.pager a:hover{background:var(--brand-soft);border-color:transparent;color:var(--brand)}
.pager .is-current{background:var(--brand);border-color:var(--brand);color:#fff;font-weight:600}
.pager-note{text-align:center;margin-top:14px;font-size:12.5px;color:var(--text-3)}

/* ---------- 空态 ---------- */
.empty-state{display:flex;flex-direction:column;align-items:center;gap:12px;padding:40px 24px;background:var(--soft-2);border:1px dashed var(--border);border-radius:var(--radius);text-align:center}
.empty-shape{width:54px;height:54px;border-radius:16px;background:#fff;border:1px solid var(--border);position:relative}
.empty-shape::before{content:"";position:absolute;top:16px;left:12px;right:12px;height:8px;border-radius:4px;background:var(--bg-alt)}
.empty-shape::after{content:"";position:absolute;bottom:14px;left:12px;width:20px;height:8px;border-radius:4px;background:var(--brand-soft)}
.empty-state p{font-size:14px;color:var(--text-2)}

/* ---------- 页脚 ---------- */
.site-footer{margin-top:72px;background:var(--soft-2);border-top:1px solid var(--border);padding:56px 0 24px}
.footer-grid{display:grid;grid-template-columns:1fr;gap:32px}
@media (min-width:700px){.footer-grid{grid-template-columns:repeat(2,1fr)}}
@media (min-width:1024px){.footer-grid{grid-template-columns:1.5fr 1fr 1fr 1.2fr;gap:40px}}
.footer-brand p{margin-top:14px;font-size:14px;color:var(--text-2);line-height:1.8;max-width:340px}
.footer-title{font-size:15px;font-weight:600;margin-bottom:14px}
.footer-links{display:flex;flex-direction:column;gap:10px}
.footer-links a,.footer-links span{font-size:14px;color:var(--text-2)}
.footer-links a:hover{color:var(--brand);text-decoration:underline;text-underline-offset:3px}
.footer-note{font-size:14px;color:var(--text-2);line-height:1.8}
.footer-bottom{
  margin-top:40px;padding-top:20px;border-top:1px solid var(--border);
  display:flex;flex-wrap:wrap;gap:10px;justify-content:space-between;
  font-size:12.5px;color:var(--text-3);
}

@media (max-width:1024px){
  .nav-links,.nav-cta{display:none}
  .nav-toggle{display:flex;margin-left:auto}
}
@media (max-width:520px){
  .brand{font-size:15.5px}
  .brand-mark{width:26px;height:26px}
  .hero-cat{padding:36px 0 56px}
  .section-title{font-size:23px}
  .cta-copy h2{font-size:22px}
  .btn{padding:11px 20px}
}
@media (prefers-reduced-motion:reduce){
  *{transition-duration:.01ms !important;animation-duration:.01ms !important}
  .content-card:hover,.stat-card:hover,.tl-item:hover{transform:none}
  html{scroll-behavior:auto}
}

/* roulang page: category2 */
:root{
  --brand:#1B4A9C;
  --brand-dark:#143A7E;
  --brand-soft:#E8EFFB;
  --brand-soft-2:#F2F6FD;
  --accent:#FF6B4A;
  --accent-dark:#E85A38;
  --accent-soft:#FFEDE7;
  --teal:#17A2A6;
  --teal-soft:#E4F5F5;
  --bg:#F6F8FC;
  --bg-alt:#EEF3FA;
  --card:#FFFFFF;
  --text:#101A2B;
  --text-2:#5A6B85;
  --text-3:#8A99B0;
  --border:#E3E9F3;
  --line:#EDF1F8;
  --ok:#1E9E6A;
  --warn:#D98A1F;
  --err:#D64545;
  --r-lg:18px;
  --r-md:14px;
  --r-sm:12px;
  --r-xs:10px;
  --r-pill:999px;
  --sh-1:0 1px 2px rgba(16,26,43,.04),0 8px 24px rgba(16,26,43,.06);
  --sh-2:0 12px 32px rgba(16,26,43,.10);
  --ease:cubic-bezier(.2,.7,.3,1);
}
*,*::before,*::after{box-sizing:border-box}
html{-webkit-text-size-adjust:100%;scroll-behavior:smooth}
body{
  margin:0;
  font-family:"PingFang SC","Hiragino Sans GB","Microsoft YaHei",system-ui,-apple-system,"Segoe UI",sans-serif;
  font-size:16px;
  line-height:1.8;
  color:var(--text);
  background:var(--bg);
}
img{max-width:100%;display:block;border:0}
a{color:inherit;text-decoration:none}
ul,ol{margin:0;padding:0;list-style:none}
h1,h2,h3,h4,p{margin:0}
button{font:inherit;color:inherit;background:none;border:0;cursor:pointer}
input,textarea{font:inherit}
:focus-visible{outline:2px solid var(--accent);outline-offset:2px;border-radius:6px}
.container{width:100%;max-width:1200px;margin:0 auto;padding:0 20px}
@media (min-width:768px){.container{padding:0 32px}}
.section{padding:52px 0}
@media (min-width:768px){.section{padding:80px 0}}
.section-alt{background:var(--bg-alt)}
.section-head{display:flex;align-items:flex-end;justify-content:space-between;gap:20px;margin-bottom:28px;flex-wrap:wrap}
.section-title{font-size:26px;font-weight:600;line-height:1.35;letter-spacing:.2px}
@media (min-width:768px){.section-title{font-size:28px}}
.section-sub{color:var(--text-2);font-size:15px;margin-top:10px;max-width:720px}
.kicker{
  display:inline-flex;align-items:center;gap:8px;
  font-size:12.5px;font-weight:600;letter-spacing:.08em;
  color:var(--brand);background:var(--brand-soft);
  border-radius:var(--r-pill);padding:6px 14px;margin-bottom:16px;
}
.kicker::before{content:"";width:6px;height:6px;border-radius:50%;background:var(--accent)}

/* 按钮 */
.btn{
  display:inline-flex;align-items:center;justify-content:center;gap:8px;
  height:44px;padding:0 24px;border-radius:var(--r-xs);
  font-size:15px;font-weight:600;border:1px solid transparent;
  transition:background-color .2s var(--ease),transform .2s var(--ease),box-shadow .2s var(--ease),border-color .2s var(--ease),color .2s var(--ease);
}
.btn-sm{height:40px;padding:0 18px;font-size:14px}
.btn-primary{background:var(--brand);color:#fff}
.btn-primary:hover{background:var(--brand-dark);transform:translateY(-1px);box-shadow:0 10px 22px rgba(27,74,156,.22)}
.btn-primary:active{transform:none;box-shadow:none}
.btn-ghost{background:#fff;border-color:#D7E1F2;color:var(--brand)}
.btn-ghost:hover{border-color:var(--brand);background:#F3F7FE}
.btn-accent{background:var(--accent);color:#fff}
.btn-accent:hover{background:var(--accent-dark);transform:translateY(-1px);box-shadow:0 10px 22px rgba(232,90,56,.24)}
.btn-accent:active{transform:none;box-shadow:none}
.btn-text{display:inline-flex;align-items:center;gap:6px;color:var(--brand);font-weight:600;font-size:15px;transition:color .2s var(--ease)}
.btn-text span{transition:transform .2s var(--ease)}
.btn-text:hover{text-decoration:underline;text-underline-offset:4px}
.btn-text:hover span{transform:translateX(4px)}

/* 标签 */
.tag{
  display:inline-flex;align-items:center;height:26px;padding:0 12px;
  border-radius:var(--r-pill);font-size:12.5px;font-weight:600;
  background:var(--brand-soft);color:var(--brand);white-space:nowrap;
}
.tag-teal{background:var(--teal-soft);color:#0F7B7E}
.tag-accent{background:var(--accent-soft);color:#C7411F}
.tag-plain{background:var(--bg-alt);color:var(--text-2)}

/* 头部导航 */
.site-header{
  position:sticky;top:0;z-index:60;
  padding:12px 0;
  background:rgba(246,248,252,.94);
  transition:padding .2s var(--ease);
}
.nav-panel{
  display:flex;align-items:center;gap:16px;
  background:var(--card);
  border:1px solid var(--border);
  border-radius:16px;
  box-shadow:var(--sh-1);
  min-height:68px;
  padding:0 18px;
  transition:min-height .2s var(--ease),box-shadow .2s var(--ease);
}
.site-header.is-stuck .nav-panel{min-height:60px;box-shadow:0 8px 26px rgba(16,26,43,.10)}
.brand{display:inline-flex;align-items:center;gap:10px;flex:0 0 auto}
.brand-mark{
  position:relative;width:34px;height:34px;border-radius:11px;
  background:linear-gradient(150deg,var(--brand),#2A62BE);
  flex:0 0 34px;
}
.brand-mark::before{
  content:"";position:absolute;left:8px;right:8px;top:11px;height:1.5px;
  background:rgba(255,255,255,.9);border-radius:2px;
}
.brand-mark::after{
  content:"";position:absolute;left:8px;bottom:11px;width:12px;height:1.5px;
  background:rgba(255,255,255,.6);border-radius:2px;
}
.brand-name{font-size:16px;font-weight:600;letter-spacing:.2px;color:var(--text);white-space:nowrap}
.nav-links{display:flex;align-items:center;gap:6px;margin-left:auto}
.nav-links a{
  position:relative;display:inline-flex;align-items:center;height:40px;
  padding:0 14px;border-radius:var(--r-xs);
  font-size:15px;color:var(--text-2);
  transition:background-color .2s var(--ease),color .2s var(--ease);
  white-space:nowrap;
}
.nav-links a:hover{background:var(--brand-soft);color:var(--brand)}
.nav-links a.is-active{background:var(--brand-soft);color:var(--brand);font-weight:600}
.nav-links a.is-active::before{
  content:"";position:absolute;left:0;top:50%;transform:translateY(-50%);
  width:3px;height:18px;border-radius:2px;background:var(--brand);
}
.nav-cta{flex:0 0 auto;margin-left:4px}
.nav-toggle{
  display:none;width:42px;height:42px;border-radius:var(--r-xs);
  background:var(--brand-soft-2);border:1px solid var(--border);
  padding:11px 10px;margin-left:auto;
}
.nav-toggle span{display:block;height:2px;border-radius:2px;background:var(--brand);transition:transform .2s var(--ease),opacity .2s var(--ease)}
.nav-toggle span + span{margin-top:4px}
.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)}
.mobile-panel{display:none}
.mobile-grid{display:grid;grid-template-columns:1fr 1fr;gap:10px;margin-bottom:12px}
.mobile-grid a{
  display:flex;align-items:center;min-height:44px;padding:0 14px;
  background:var(--brand-soft-2);border-radius:var(--r-xs);
  font-size:14.5px;color:var(--text-2);
}
.mobile-grid a.is-active{background:var(--brand-soft);color:var(--brand);font-weight:600}
.mobile-cta{width:100%}

/* 分类头图 */
.cat-hero{
  position:relative;overflow:hidden;color:#fff;
  background-image:linear-gradient(100deg,rgba(16,32,68,.93) 0%,rgba(27,74,156,.76) 62%,rgba(27,74,156,.55) 100%),url('/assets/images/backpic/back-1.webp');
  background-size:cover;background-position:center;
  padding:52px 0 72px;
}
.cat-hero::after{
  content:"";position:absolute;inset:0;pointer-events:none;
  background-image:repeating-linear-gradient(98deg,rgba(255,255,255,.055) 0 1px,transparent 1px 46px);
}
.cat-hero .container{position:relative;z-index:1}
.breadcrumb{display:flex;align-items:center;gap:8px;font-size:12.5px;color:rgba(255,255,255,.72);margin-bottom:18px}
.breadcrumb a{color:rgba(255,255,255,.86)}
.breadcrumb a:hover{color:#fff;text-decoration:underline;text-underline-offset:4px}
.breadcrumb .sep{opacity:.55}
.cat-hero .eyebrow{
  display:inline-flex;align-items:center;gap:8px;font-size:12.5px;font-weight:600;
  letter-spacing:.08em;color:#fff;background:rgba(255,255,255,.14);
  border:1px solid rgba(255,255,255,.24);border-radius:var(--r-pill);
  padding:6px 14px;margin-bottom:18px;
}
.cat-hero h1{font-size:29px;line-height:1.3;font-weight:600;letter-spacing:.4px}
@media (min-width:768px){.cat-hero h1{font-size:42px}}
.cat-hero .hero-lead{margin-top:16px;font-size:16px;color:rgba(255,255,255,.86);max-width:640px}
.hero-badges{display:flex;flex-wrap:wrap;gap:10px;margin-top:26px}
.hero-badge{
  display:inline-flex;align-items:center;gap:7px;
  border:1px solid rgba(255,255,255,.28);background:rgba(255,255,255,.12);
  border-radius:var(--r-pill);padding:6px 14px;font-size:12.5px;color:#fff;
}
.hero-badge::before{content:"";width:5px;height:5px;border-radius:50%;background:var(--accent)}

/* 筛选标签条 */
.filter-bar{
  position:relative;z-index:2;margin-top:-30px;
  display:flex;flex-wrap:wrap;align-items:center;gap:10px;
  background:var(--card);border:1px solid var(--border);border-radius:var(--r-md);
  box-shadow:var(--sh-1);padding:16px 20px;
}
.filter-bar .filter-label{font-size:13px;color:var(--text-3);margin-right:4px}
.chip{
  display:inline-flex;align-items:center;height:34px;padding:0 16px;
  border-radius:var(--r-pill);font-size:13.5px;
  background:var(--bg-alt);color:var(--text-2);cursor:default;
  transition:background-color .2s var(--ease),color .2s var(--ease);
}
.chip.is-on{background:var(--brand);color:#fff;font-weight:600}
.chip:hover{background:var(--brand-soft);color:var(--brand)}
.chip.is-on:hover{background:var(--brand-dark);color:#fff}

/* 双栏布局 */
.cat-layout{display:grid;grid-template-columns:300px minmax(0,1fr);gap:32px;align-items:start}
@media (max-width:1024px){.cat-layout{grid-template-columns:1fr;gap:24px}}
.side-col{display:grid;gap:20px;position:sticky;top:104px}
@media (max-width:1024px){.side-col{position:static}}
.side-card{
  background:var(--card);border:1px solid var(--border);
  border-radius:var(--r-md);box-shadow:var(--sh-1);padding:22px;
}
.side-title{display:flex;align-items:center;gap:8px;font-size:15px;font-weight:600;margin-bottom:16px}
.side-title::before{content:"";width:4px;height:16px;border-radius:2px;background:var(--brand)}
.side-list li + li{margin-top:4px}
.side-list a{
  display:flex;align-items:center;justify-content:space-between;gap:12px;
  min-height:42px;padding:0 12px;border-radius:var(--r-xs);
  font-size:14.5px;color:var(--text-2);
  transition:background-color .2s var(--ease),color .2s var(--ease);
}
.side-list a:hover{background:var(--brand-soft-2);color:var(--brand)}
.side-list a .count{font-size:12.5px;color:var(--text-3);font-variant-numeric:tabular-nums}
.side-note{font-size:14px;color:var(--text-2);line-height:1.85}
.side-meta{display:flex;flex-wrap:wrap;gap:8px;margin-top:16px}
.side-link{display:inline-flex;align-items:center;gap:6px;font-size:14px;color:var(--brand);font-weight:600;margin-top:16px}
.side-link:hover{text-decoration:underline;text-underline-offset:4px}
.side-link span{transition:transform .2s var(--ease)}
.side-link:hover span{transform:translateX(4px)}

/* 时间线 */
.timeline{position:relative}
.tl-item{position:relative;padding-left:34px;padding-bottom:22px}
.tl-item:last-child{padding-bottom:0}
.tl-item::before{
  content:"";position:absolute;left:7px;top:28px;bottom:-6px;width:1px;background:var(--border);
}
.tl-item:last-child::before{display:none}
.tl-dot{
  position:absolute;left:0;top:8px;width:15px;height:15px;border-radius:50%;
  background:#fff;border:3px solid var(--brand);box-shadow:0 0 0 4px rgba(27,74,156,.08);
}
.tl-date{
  display:block;font-size:12.5px;color:var(--text-3);letter-spacing:.04em;
  font-variant-numeric:tabular-nums;margin-bottom:8px;
}
.tl-card{
  display:grid;grid-template-columns:168px minmax(0,1fr);gap:20px;
  background:var(--card);border:1px solid var(--border);
  border-radius:var(--r-md);box-shadow:var(--sh-1);padding:16px;
  transition:transform .22s var(--ease),box-shadow .22s var(--ease),border-color .22s var(--ease);
}
.tl-card:hover{transform:translateY(-4px);box-shadow:var(--sh-2);border-color:#D5E1F5}
.tl-thumb{
  border-radius:var(--r-sm);overflow:hidden;aspect-ratio:4/3;background:var(--bg-alt);
}
.tl-thumb img{width:100%;height:100%;object-fit:cover;transition:transform .3s var(--ease)}
.tl-card:hover .tl-thumb img{transform:scale(1.04)}
.tl-meta{display:flex;align-items:center;gap:10px;flex-wrap:wrap;margin-bottom:8px}
.tl-read{font-size:12.5px;color:var(--text-3)}
.tl-title{font-size:18px;font-weight:600;line-height:1.5}
.tl-card:hover .tl-title{color:var(--brand)}
.tl-desc{margin-top:8px;font-size:14.5px;color:var(--text-2);line-height:1.75}
@media (max-width:767px){
  .tl-card{grid-template-columns:1fr;gap:14px}
  .tl-thumb{aspect-ratio:16/9}
  .tl-item{padding-left:26px}
  .tl-item::before{left:6px}
  .tl-dot{width:13px;height:13px;left:0;top:7px}
}

/* 排行板块 */
.rank-panel{display:grid;grid-template-columns:minmax(0,1.05fr) minmax(0,1fr);gap:32px;align-items:start}
@media (max-width:1024px){.rank-panel{grid-template-columns:1fr;gap:24px}}
.rank-feature{
  position:relative;border-radius:var(--r-lg);overflow:hidden;
  box-shadow:var(--sh-1);aspect-ratio:16/11;background:var(--bg-alt);
}
.rank-feature img{width:100%;height:100%;object-fit:cover}
.rank-feature .rank-overlay{
  position:absolute;inset:auto 0 0 0;padding:26px 24px 22px;color:#fff;
  background:linear-gradient(180deg,rgba(16,26,43,0) 0%,rgba(16,26,43,.82) 72%);
}
.rank-feature h3{font-size:20px;font-weight:600;line-height:1.45;margin-bottom:8px}
.rank-feature p{font-size:14.5px;color:rgba(255,255,255,.85)}
.rank-list{display:grid;gap:10px}
.rank-item{
  display:grid;grid-template-columns:38px 56px minmax(0,1fr) auto;gap:14px;align-items:center;
  background:var(--card);border:1px solid var(--border);border-radius:var(--r-md);
  padding:12px 16px;box-shadow:var(--sh-1);
  transition:transform .2s var(--ease),box-shadow .2s var(--ease),border-color .2s var(--ease);
}
.rank-item:hover{transform:translateY(-3px);box-shadow:var(--sh-2);border-color:#D5E1F5}
.rank-num{
  font-size:18px;font-weight:600;color:var(--text-3);
  font-variant-numeric:tabular-nums;letter-spacing:.02em;
}
.rank-item:nth-child(-n+3) .rank-num{color:var(--accent)}
.rank-thumb{width:56px;height:56px;border-radius:var(--r-xs);overflow:hidden;background:var(--bg-alt)}
.rank-thumb img{width:100%;height:100%;object-fit:cover}
.rank-info h3{font-size:15.5px;font-weight:600;line-height:1.5}
.rank-item:hover .rank-info h3{color:var(--brand)}
.rank-info p{font-size:13px;color:var(--text-3);margin-top:4px;line-height:1.6}
.rank-score{
  font-size:13px;font-weight:600;color:var(--teal);
  font-variant-numeric:tabular-nums;background:var(--teal-soft);
  border-radius:var(--r-pill);padding:4px 12px;white-space:nowrap;
}
@media (max-width:600px){
  .rank-item{grid-template-columns:32px 44px minmax(0,1fr);gap:10px}
  .rank-thumb{width:44px;height:44px}
  .rank-score{display:none}
}

/* 数据块 */
.stat-grid{display:grid;grid-template-columns:repeat(4,minmax(0,1fr));gap:20px}
@media (max-width:900px){.stat-grid{grid-template-columns:repeat(2,minmax(0,1fr))}}
@media (max-width:480px){.stat-grid{grid-template-columns:1fr}}
.stat-card{
  background:var(--card);border:1px solid var(--border);border-radius:var(--r-md);
  box-shadow:var(--sh-1);padding:22px;
  transition:transform .2s var(--ease),box-shadow .2s var(--ease);
}
.stat-card:hover{transform:translateY(-4px);box-shadow:var(--sh-2)}
.stat-num{font-size:30px;font-weight:600;color:var(--brand);line-height:1.2;font-variant-numeric:tabular-nums}
.stat-label{font-size:14px;color:var(--text);font-weight:600;margin-top:8px}
.stat-desc{font-size:13px;color:var(--text-3);margin-top:6px;line-height:1.7}

/* FAQ */
.faq{background:var(--card);border:1px solid var(--border);border-radius:16px;box-shadow:var(--sh-1);overflow:hidden}
.faq-item + .faq-item{border-top:1px solid var(--line)}
.faq-q{
  width:100%;display:flex;align-items:center;justify-content:space-between;gap:18px;
  padding:20px 22px;font-size:16px;font-weight:600;text-align:left;line-height:1.6;
  transition:color .2s var(--ease);
}
.faq-q:hover{color:var(--brand)}
.faq-icon{position:relative;flex:0 0 16px;width:16px;height:16px}
.faq-icon::before,.faq-icon::after{
  content:"";position:absolute;background:var(--brand);border-radius:2px;
  transition:transform .2s var(--ease),opacity .2s var(--ease);
}
.faq-icon::before{left:0;top:7px;width:16px;height:2px}
.faq-icon::after{left:7px;top:0;width:2px;height:16px}
.faq-item.is-open .faq-icon::after{transform:scaleY(0);opacity:0}
.faq-a{max-height:0;overflow:hidden;padding:0 22px;transition:max-height .2s var(--ease),padding .2s var(--ease)}
.faq-item.is-open .faq-a{padding-bottom:20px}
.faq-a p{font-size:15px;color:var(--text-2);line-height:1.85}

/* CTA */
.cta-band{
  display:flex;align-items:center;justify-content:space-between;gap:24px;flex-wrap:wrap;
  background:linear-gradient(120deg,var(--brand-soft) 0%,#F8FAFF 100%);
  border:1px solid var(--border);border-radius:var(--r-lg);
  padding:32px 30px;box-shadow:var(--sh-1);
}
.cta-band h2{font-size:22px;font-weight:600;line-height:1.45}
.cta-band p{font-size:14.5px;color:var(--text-2);margin-top:10px;max-width:620px}
.cta-actions{display:flex;gap:12px;flex-wrap:wrap}

/* 页脚 */
.site-footer{background:var(--brand-soft-2);border-top:1px solid var(--border);padding:56px 0 24px;margin-top:16px}
.footer-grid{display:grid;grid-template-columns:1.5fr 1fr 1fr 1.3fr;gap:32px}
@media (max-width:1024px){.footer-grid{grid-template-columns:1fr 1fr}}
@media (max-width:600px){.footer-grid{grid-template-columns:1fr;gap:28px}}
.footer-brand p{font-size:14px;color:var(--text-2);line-height:1.85;margin-top:14px;max-width:340px}
.footer-title{font-size:15px;font-weight:600;margin-bottom:14px}
.footer-links li{margin-bottom:10px;font-size:14px;color:var(--text-2)}
.footer-links a{color:var(--text-2);transition:color .2s var(--ease)}
.footer-links a:hover{color:var(--brand);text-decoration:underline;text-underline-offset:4px}
.footer-note{font-size:14px;color:var(--text-2);line-height:1.85}
.footer-bottom{
  margin-top:36px;padding-top:20px;border-top:1px solid var(--border);
  display:flex;align-items:center;justify-content:space-between;gap:12px;flex-wrap:wrap;
  font-size:12.5px;color:var(--text-3);
}

@media (max-width:1024px){
  .nav-links,.nav-cta{display:none}
  .nav-toggle{display:block}
  .mobile-panel{display:none;margin-top:12px;background:var(--card);border:1px solid var(--border);border-radius:16px;box-shadow:var(--sh-1);padding:16px}
  .mobile-panel.is-open{display:block}
}
@media (max-width:520px){
  .cat-hero{padding:40px 0 62px}
  .cat-hero h1{font-size:27px}
  .section{padding:48px 0}
  .section-title{font-size:23px}
  .cta-band{padding:24px 20px}
  .stat-num{font-size:26px}
}
@media (prefers-reduced-motion:reduce){
  *{transition:none !important;animation:none !important;scroll-behavior:auto !important}
  .tl-card:hover,.rank-item:hover,.stat-card:hover{transform:none}
}