/* roulang page: index */
:root{
  --c-primary:#1D5BD6;
  --c-primary-600:#164BB0;
  --c-primary-100:#EAF1FF;
  --c-accent:#E9963F;
  --c-accent-100:#FDF3E4;
  --c-ink:#0F1B2D;
  --c-ink-2:#3C4A62;
  --c-muted:#6B7A90;
  --c-line:#E4E9F2;
  --c-bg:#F6F8FB;
  --c-surface:#FFFFFF;
  --c-footer:#0F2440;
  --c-success:#12A150;
  --c-warning:#E9963F;
  --c-error:#DC3A3A;
  --r-card:16px;
  --r-img:12px;
  --r-btn:10px;
  --r-panel:20px;
  --sh-xs:0 1px 2px rgba(15,27,45,.04);
  --sh-sm:0 2px 8px rgba(15,27,45,.06);
  --sh-md:0 8px 24px rgba(15,27,45,.08);
  --sh-lg:0 18px 48px rgba(15,27,45,.10);
  --ease:cubic-bezier(.2,.7,.3,1);
  --tr:200ms cubic-bezier(.2,.7,.3,1);
  --font:"Inter",-apple-system,"PingFang SC","HarmonyOS Sans SC","Microsoft YaHei","Source Han Sans SC",system-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:1.85;
  color:var(--c-ink-2);
  background:var(--c-bg);
  -webkit-font-smoothing:antialiased;
}
img{max-width:100%;display:block;}
a{color:var(--c-primary);text-decoration:none;transition:color var(--tr),background-color var(--tr),border-color var(--tr);}
a:hover{color:var(--c-primary-600);}
h1,h2,h3,h4{margin:0;color:var(--c-ink);font-weight:700;}
h1{font-size:40px;line-height:1.25;letter-spacing:-.4px;}
h2{font-size:28px;line-height:1.35;}
h3{font-size:20px;line-height:1.5;font-weight:600;}
p{margin:0;}
ul,ol{margin:0;padding:0;list-style:none;}
button{font-family:inherit;}
:focus-visible{outline:2px solid var(--c-primary);outline-offset:2px;box-shadow:0 0 0 3px rgba(29,91,214,.18);border-radius:6px;}
::selection{background:rgba(29,91,214,.18);}
::-webkit-scrollbar{width:8px;height:8px;}
::-webkit-scrollbar-thumb{background:#C9D3E3;border-radius:8px;}
::-webkit-scrollbar-track{background:transparent;}
.container{max-width:1200px;margin:0 auto;padding:0 24px;}
.num{font-family:"Inter",system-ui,sans-serif;font-variant-numeric:tabular-nums;}

/* ============ 导航 ============ */
.site-header{
  position:sticky;top:0;z-index:50;
  background:#FFFFFF;
  border-bottom:1px solid var(--c-line);
  box-shadow:var(--sh-xs);
}
.nav{display:flex;align-items:center;gap:20px;height:70px;}
.brand{display:flex;align-items:center;gap:10px;flex-shrink:0;}
.brand svg{color:var(--c-primary);flex-shrink:0;}
.brand-text{font-size:17px;font-weight:700;color:var(--c-ink);letter-spacing:.2px;white-space:nowrap;}
.brand:hover .brand-text{color:var(--c-primary);}
.nav-links{display:flex;align-items:center;gap:4px;margin-left:8px;}
.nav-links a{
  display:inline-flex;align-items:center;height:40px;padding:0 14px;
  border-radius:999px;font-size:15px;color:var(--c-ink-2);white-space:nowrap;
}
.nav-links a:hover{color:var(--c-primary);background:var(--c-primary-100);}
.nav-links a.active{color:var(--c-primary);background:var(--c-primary-100);font-weight:600;}
.nav-right{margin-left:auto;display:flex;align-items:center;gap:12px;}
.search{position:relative;display:block;}
.search svg{position:absolute;left:14px;top:50%;transform:translateY(-50%);color:var(--c-muted);pointer-events:none;}
.search input{
  height:40px;width:220px;border-radius:999px;border:1px solid #D7E0EF;
  padding:0 16px 0 40px;font-size:14px;color:var(--c-ink);background:#fff;
  transition:var(--tr);font-family:inherit;
}
.search input::placeholder{color:var(--c-muted);}
.search input:focus{outline:none;border-color:var(--c-primary);box-shadow:0 0 0 3px rgba(29,91,214,.18);}
.menu-btn{
  display:none;width:44px;height:44px;align-items:center;justify-content:center;
  border:1px solid var(--c-line);border-radius:12px;background:#fff;color:var(--c-ink);
  cursor:pointer;transition:var(--tr);
}
.menu-btn:hover{background:var(--c-primary-100);border-color:var(--c-primary);color:var(--c-primary);}

/* ============ 按钮 ============ */
.btn{
  display:inline-flex;align-items:center;justify-content:center;gap:8px;
  height:44px;padding:0 24px;border-radius:var(--r-btn);
  font-size:15px;font-weight:600;border:1px solid transparent;cursor:pointer;
  transition:var(--tr);white-space:nowrap;text-decoration:none;
}
.btn-primary{background:var(--c-primary);color:#fff;}
.btn-primary:hover{background:var(--c-primary-600);color:#fff;transform:translateY(-1px);box-shadow:var(--sh-sm);}
.btn-primary:active{transform:translateY(0);box-shadow:none;}
.btn-ghost{background:#fff;border-color:#D7E0EF;color:var(--c-primary);}
.btn-ghost:hover{border-color:var(--c-primary);background:var(--c-primary-100);color:var(--c-primary-600);}
.btn-light{background:#fff;color:var(--c-primary-600);}
.btn-light:hover{background:var(--c-primary-100);color:var(--c-primary-600);transform:translateY(-1px);}
.btn-outline-light{background:transparent;border-color:rgba(255,255,255,.55);color:#fff;}
.btn-outline-light:hover{background:rgba(255,255,255,.12);border-color:#fff;color:#fff;}
.btn-pill{border-radius:999px;}
.btn[disabled]{background:#C9D3E3;color:#fff;border-color:#C9D3E3;cursor:not-allowed;transform:none;box-shadow:none;}
.text-link{display:inline-flex;align-items:center;gap:6px;font-size:14px;font-weight:600;color:var(--c-primary);}
.text-link:hover{color:var(--c-primary-600);}
.text-link svg{transition:transform var(--tr);}
.text-link:hover svg{transform:translateX(3px);}

/* ============ Hero ============ */
.hero{
  position:relative;overflow:hidden;
  background:linear-gradient(180deg,#FFFFFF 0%,#F2F6FD 100%);
  border-bottom:1px solid var(--c-line);
}
.hero::before{
  content:"";position:absolute;inset:0;pointer-events:none;
  background-image:radial-gradient(rgba(29,91,214,.06) 1px,transparent 1px);
  background-size:26px 26px;
}
.hero-inner{
  position:relative;display:grid;grid-template-columns:5fr 7fr;
  gap:56px;align-items:center;padding:76px 0 84px;min-height:560px;
}
.hero-tag{
  display:inline-flex;align-items:center;gap:8px;height:30px;padding:0 14px;
  border-radius:999px;background:var(--c-primary-100);color:var(--c-primary);
  font-size:13px;font-weight:600;margin-bottom:20px;
}
.hero h1{max-width:560px;}
.hero-sub{font-size:18px;line-height:1.8;color:var(--c-ink-2);margin-top:20px;max-width:520px;}
.hero-actions{display:flex;gap:12px;margin-top:32px;flex-wrap:wrap;}
.trust{display:flex;flex-wrap:wrap;gap:20px;margin-top:30px;}
.trust-item{display:inline-flex;align-items:center;gap:8px;font-size:14px;color:var(--c-muted);}
.trust-item + .trust-item{border-left:1px solid var(--c-line);padding-left:20px;}
.trust-item svg{color:var(--c-primary);flex-shrink:0;}
.hero-media{
  border-radius:var(--r-card);overflow:hidden;box-shadow:var(--sh-md);
  background:#EDF1F7;
}
.hero-media img{width:100%;aspect-ratio:4/3;object-fit:cover;transition:transform var(--tr);}
.hero-media:hover img{transform:scale(1.03);}

/* ============ 板块通用 ============ */
.section{padding:88px 0;}
.section.on-white{background:#fff;}
.section-head{display:flex;align-items:flex-end;justify-content:space-between;gap:24px;margin-bottom:36px;flex-wrap:wrap;}
.section-desc{font-size:16px;color:var(--c-muted);line-height:1.8;margin-top:12px;max-width:720px;}
.eyebrow{
  display:inline-flex;align-items:center;gap:8px;font-size:13px;font-weight:600;
  color:var(--c-primary);letter-spacing:.6px;text-transform:uppercase;margin-bottom:10px;
}
.eyebrow::before{content:"";width:20px;height:2px;background:var(--c-accent);border-radius:2px;}

/* ============ 卡片与徽章 ============ */
.card{
  background:var(--c-surface);border:1px solid var(--c-line);border-radius:var(--r-card);
  box-shadow:var(--sh-sm);transition:var(--tr);
}
.card:hover{box-shadow:var(--sh-md);transform:translateY(-2px);}
.card:hover .card-title{color:var(--c-primary);}
.card-title{transition:color var(--tr);}
.icon-box{
  width:44px;height:44px;border-radius:12px;background:var(--c-primary-100);
  color:var(--c-primary);display:flex;align-items:center;justify-content:center;margin-bottom:16px;
}
.badge{
  display:inline-flex;align-items:center;height:24px;padding:0 10px;border-radius:999px;
  background:var(--c-primary-100);color:var(--c-primary);font-size:12px;font-weight:600;white-space:nowrap;
}
.badge-accent{background:var(--c-accent-100);color:#B4700F;}
.meta{display:flex;flex-wrap:wrap;align-items:center;gap:10px;font-size:14px;color:var(--c-muted);line-height:1.6;}
.meta .dot{width:3px;height:3px;border-radius:50%;background:#C9D3E3;display:inline-block;}
.media{overflow:hidden;border-radius:var(--r-img);background:#EDF1F7;}
.media img{width:100%;height:100%;object-fit:cover;transition:transform var(--tr);}
.media:hover img{transform:scale(1.03);}

/* ============ 能力四卡（两列） ============ */
.ability-grid{display:grid;grid-template-columns:repeat(2,1fr);gap:24px;}
.ability-card{padding:28px;display:flex;gap:20px;align-items:flex-start;}
.ability-card .icon-box{margin-bottom:0;flex-shrink:0;}
.ability-card h3{margin-bottom:8px;}
.ability-card p{font-size:15px;line-height:1.8;color:var(--c-ink-2);}

/* ============ 合集目录 ============ */
.catalog{display:grid;grid-template-columns:280px 1fr;gap:48px;align-items:start;}
.catalog-nav{position:sticky;top:96px;display:flex;flex-direction:column;gap:8px;}
.catalog-nav a{
  display:block;padding:14px 16px;border-radius:12px;border:1px solid transparent;
  color:var(--c-ink-2);transition:var(--tr);
}
.catalog-nav a:hover{
  background:#fff;border-color:var(--c-line);color:var(--c-primary);
  transform:translateX(-2px);box-shadow:var(--sh-xs);
}
.catalog-nav .num{display:block;font-size:13px;font-weight:700;color:var(--c-accent);margin-bottom:4px;}
.catalog-nav .cn-title{display:block;font-size:15px;font-weight:600;color:var(--c-ink);line-height:1.5;}
.catalog-nav a:hover .cn-title{color:var(--c-primary);}
.catalog-nav .cn-desc{display:block;font-size:13px;color:var(--c-muted);line-height:1.6;margin-top:2px;}
.catalog-group + .catalog-group{margin-top:40px;padding-top:32px;border-top:1px solid var(--c-line);}
.catalog-group h3{margin-bottom:8px;}
.catalog-group > p{font-size:15px;color:var(--c-muted);}
.entry-list{display:grid;gap:12px;margin-top:18px;}
.entry{
  display:flex;gap:16px;align-items:flex-start;background:#fff;
  border:1px solid var(--c-line);border-radius:var(--r-img);padding:18px 20px;
  box-shadow:var(--sh-xs);transition:var(--tr);
}
.entry:hover{box-shadow:var(--sh-md);transform:translateY(-2px);}
.entry:hover .entry-title{color:var(--c-primary);}
.entry-icon{
  width:36px;height:36px;border-radius:10px;background:var(--c-primary-100);color:var(--c-primary);
  display:flex;align-items:center;justify-content:center;flex-shrink:0;
}
.entry-title{display:block;font-size:16px;font-weight:600;color:var(--c-ink);margin-bottom:4px;transition:color var(--tr);}
.entry p{font-size:14px;line-height:1.7;color:var(--c-muted);}

/* ============ 精选条目（非对称网格） ============ */
.featured{display:grid;grid-template-columns:2fr 1fr;gap:24px;}
.featured-main{
  grid-row:span 2;display:flex;flex-direction:column;background:#fff;
  border:1px solid var(--c-line);border-radius:var(--r-card);box-shadow:var(--sh-sm);
  overflow:hidden;transition:var(--tr);
}
.featured-main:hover{box-shadow:var(--sh-md);transform:translateY(-2px);}
.featured-main:hover .card-title{color:var(--c-primary);}
.featured-main .media{border-radius:0;aspect-ratio:16/10;}
.featured-main-body{padding:24px;}
.featured-main-body h3{font-size:22px;margin:12px 0 10px;}
.featured-main-body p{font-size:15px;line-height:1.8;color:var(--c-muted);}
.featured-side{
  display:flex;gap:18px;padding:20px;background:#fff;border:1px solid var(--c-line);
  border-radius:var(--r-card);box-shadow:var(--sh-sm);transition:var(--tr);align-items:flex-start;
}
.featured-side:hover{box-shadow:var(--sh-md);transform:translateY(-2px);}
.featured-side:hover .card-title{color:var(--c-primary);}
.featured-side .media{width:120px;height:88px;flex-shrink:0;}
.featured-side h3{font-size:16px;line-height:1.5;margin-bottom:6px;display:-webkit-box;-webkit-line-clamp:2;-webkit-box-orient:vertical;overflow:hidden;}
.featured-side p{font-size:14px;line-height:1.7;color:var(--c-muted);display:-webkit-box;-webkit-line-clamp:2;-webkit-box-orient:vertical;overflow:hidden;}

/* ============ 最新信息 CMS 列表 ============ */
.news-list{display:grid;gap:16px;}
.news-item{
  display:grid;grid-template-columns:140px 1fr;gap:20px;background:#fff;
  border:1px solid var(--c-line);border-radius:var(--r-card);padding:16px;
  box-shadow:var(--sh-xs);transition:var(--tr);
}
.news-item:hover{box-shadow:var(--sh-md);transform:translateY(-2px);}
.news-thumb{width:140px;height:96px;border-radius:var(--r-img);overflow:hidden;background:#EDF1F7;display:block;}
.news-thumb img{width:100%;height:100%;object-fit:cover;transition:transform var(--tr);}
.news-item:hover .news-thumb img{transform:scale(1.04);}
.news-body{min-width:0;display:flex;flex-direction:column;gap:8px;}
.news-title{font-size:18px;line-height:1.55;}
.news-title a{color:var(--c-ink);}
.news-title a:hover{color:var(--c-primary);}
.news-sum{
  font-size:14px;line-height:1.75;color:var(--c-muted);margin:0;
  display:-webkit-box;-webkit-line-clamp:2;-webkit-box-orient:vertical;overflow:hidden;
}
/* 空态 */
.empty{
  display:flex;flex-direction:column;align-items:center;text-align:center;gap:12px;
  background:#fff;border:1px dashed #C9D3E3;border-radius:var(--r-card);padding:56px 24px;
}
.empty svg{color:#9FB0C9;}
.empty h3{font-size:16px;}
.empty p{font-size:14px;color:var(--c-muted);max-width:420px;}
.empty .btn{margin-top:8px;}

/* ============ 相关推荐 ============ */
.rec-list{display:grid;}
.rec-item{
  display:grid;grid-template-columns:72px 1fr;gap:20px;align-items:start;
  padding:22px 0;border-bottom:1px solid var(--c-line);transition:var(--tr);
}
.rec-item:first-child{padding-top:0;}
.rec-item:last-child{border-bottom:0;padding-bottom:0;}
.rec-num{
  font-family:"Inter",system-ui,sans-serif;font-size:28px;font-weight:700;
  color:var(--c-accent);line-height:1;letter-spacing:-1px;
}
.rec-item h3{font-size:17px;margin-bottom:6px;}
.rec-item h3 a{color:var(--c-ink);}
.rec-item h3 a:hover{color:var(--c-primary);}
.rec-item p{font-size:14px;color:var(--c-muted);line-height:1.7;}

/* ============ CTA 面板 ============ */
.cta-wrap{padding:0 0 96px;}
.cta-panel{
  background:var(--c-primary-600);border-radius:var(--r-panel);
  padding:52px 56px;display:flex;align-items:center;justify-content:space-between;
  gap:32px;flex-wrap:wrap;box-shadow:var(--sh-md);
}
.cta-panel h2{color:#fff;font-size:26px;}
.cta-panel p{color:rgba(255,255,255,.82);font-size:15px;line-height:1.8;margin-top:10px;max-width:640px;}
.cta-actions{display:flex;gap:12px;flex-wrap:wrap;}
.copy-tip{font-size:13px;color:rgba(255,255,255,.9);margin-top:10px;min-height:20px;}

/* ============ FAQ ============ */
.faq{max-width:880px;}
.faq-item{
  background:#fff;border:1px solid var(--c-line);border-radius:var(--r-img);
  margin-bottom:12px;overflow:hidden;transition:var(--tr);
}
.faq-item:hover{border-color:#D7E0EF;box-shadow:var(--sh-xs);}
.faq-item summary{
  list-style:none;cursor:pointer;padding:20px 24px;display:flex;align-items:center;
  justify-content:space-between;gap:16px;font-size:17px;font-weight:600;color:var(--c-ink);
}
.faq-item summary::-webkit-details-marker{display:none;}
.faq-item summary::after{
  content:"+";font-size:22px;line-height:1;color:var(--c-primary);
  transition:transform 180ms var(--ease);flex-shrink:0;
}
.faq-item[open] summary::after{transform:rotate(45deg);}
.faq-body{
  background:#F8FAFD;border-top:1px solid var(--c-line);
  padding:20px 24px;font-size:15px;line-height:1.8;color:var(--c-ink-2);
}

/* ============ 页脚 ============ */
.site-footer{background:var(--c-footer);color:rgba(255,255,255,.72);margin-top:0;}
.footer-grid{display:grid;grid-template-columns:1.6fr 1fr 1fr 1.2fr;gap:40px;padding:64px 0;}
.footer-brand{display:flex;align-items:center;gap:10px;margin-bottom:16px;}
.footer-brand svg{color:#fff;}
.footer-brand span{font-size:17px;font-weight:700;color:#fff;white-space:nowrap;}
.footer-about{font-size:14px;line-height:1.85;color:rgba(255,255,255,.72);max-width:300px;}
.footer-social{display:flex;gap:10px;margin-top:20px;}
.footer-social a{
  width:38px;height:38px;border-radius:10px;display:flex;align-items:center;justify-content:center;
  background:rgba(255,255,255,.08);color:rgba(255,255,255,.82);transition:var(--tr);
}
.footer-social a:hover{background:var(--c-primary);color:#fff;}
.footer-col h4{font-size:14px;font-weight:600;color:rgba(255,255,255,.92);margin-bottom:16px;}
.footer-col ul{display:grid;gap:10px;}
.footer-col a,.footer-col li{font-size:14px;color:rgba(255,255,255,.72);line-height:1.7;}
.footer-col a:hover{color:#fff;text-decoration:underline;text-underline-offset:3px;}
.footer-bottom{
  border-top:1px solid rgba(255,255,255,.12);padding:20px 0;
  display:flex;align-items:center;justify-content:space-between;gap:16px;flex-wrap:wrap;
}
.footer-bottom p{font-size:13px;color:rgba(255,255,255,.6);}

/* ============ 抽屉 ============ */
.drawer-mask{
  position:fixed;inset:0;background:rgba(15,27,45,.45);z-index:60;
  opacity:0;visibility:hidden;transition:opacity 200ms var(--ease),visibility 200ms;
}
.drawer-mask.open{opacity:1;visibility:visible;}
.drawer{
  position:fixed;top:0;right:0;height:100%;width:84%;max-width:360px;background:#fff;
  z-index:70;transform:translateX(100%);transition:transform 260ms var(--ease);
  padding:20px;overflow-y:auto;display:flex;flex-direction:column;gap:18px;
  box-shadow:var(--sh-lg);
}
.drawer.open{transform:translateX(0);}
.drawer-head{display:flex;align-items:center;justify-content:space-between;gap:12px;padding-bottom:16px;border-bottom:1px solid var(--c-line);}
.drawer-close{
  width:44px;height:44px;border-radius:12px;border:1px solid var(--c-line);background:#fff;
  color:var(--c-ink);font-size:22px;line-height:1;cursor:pointer;transition:var(--tr);
}
.drawer-close:hover{background:var(--c-primary-100);color:var(--c-primary);border-color:var(--c-primary);}
.drawer-links{display:grid;gap:6px;}
.drawer-links a{
  display:block;padding:14px 16px;border-radius:12px;font-size:16px;color:var(--c-ink-2);
  transition:var(--tr);
}
.drawer-links a:hover{background:var(--c-primary-100);color:var(--c-primary);}
.drawer-links a.active{background:var(--c-primary-100);color:var(--c-primary);font-weight:600;}
.drawer .search input{width:100%;}
.drawer-foot{font-size:13px;color:var(--c-muted);line-height:1.8;border-top:1px solid var(--c-line);padding-top:16px;}

/* ============ 响应式 ============ */
@media (max-width:1279px){
  .container{padding:0 24px;}
}
@media (max-width:1023px){
  .section{padding:64px 0;}
  .hero-inner{grid-template-columns:1fr;gap:36px;padding:56px 0 64px;min-height:auto;}
  .hero h1{max-width:100%;}
  .hero-media img{aspect-ratio:16/10;}
  .catalog{grid-template-columns:1fr;gap:32px;}
  .catalog-nav{position:static;flex-direction:row;overflow-x:auto;gap:10px;padding-bottom:6px;}
  .catalog-nav a{flex:0 0 auto;min-width:200px;border:1px solid var(--c-line);background:#fff;}
  .featured{grid-template-columns:1fr;}
  .featured-main{grid-row:auto;}
  .footer-grid{grid-template-columns:1fr 1fr;gap:32px;padding:48px 0;}
  .cta-panel{padding:40px 32px;}
}
@media (max-width:767px){
  body{font-size:15.5px;}
  .container{padding:0 16px;}
  .nav{height:64px;gap:10px;}
  .nav-links,.nav-right .search,.nav-right .btn-pill{display:none;}
  .menu-btn{display:inline-flex;}
  .brand-text{font-size:15.5px;}
  h1{font-size:28px;}
  h2{font-size:22px;}
  .section{padding:48px 0;}
  .section-head{margin-bottom:24px;}
  .hero-inner{padding:40px 0 48px;gap:28px;}
  .hero-sub{font-size:17px;}
  .hero-actions .btn{flex:1 1 auto;}
  .trust{gap:12px;}
  .trust-item + .trust-item{border-left:0;padding-left:0;}
  .ability-grid{grid-template-columns:1fr;}
  .ability-card{padding:22px;flex-direction:column;}
  .ability-card .icon-box{margin-bottom:0;}
  .featured-side{flex-direction:column;}
  .featured-side .media{width:100%;height:150px;}
  .news-item{grid-template-columns:96px 1fr;gap:14px;padding:14px;}
  .news-thumb{width:96px;height:72px;}
  .news-title{font-size:16px;}
  .rec-item{grid-template-columns:48px 1fr;gap:14px;}
  .rec-num{font-size:22px;}
  .cta-wrap{padding-bottom:56px;}
  .cta-panel{padding:32px 24px;flex-direction:column;align-items:flex-start;}
  .cta-actions{width:100%;}
  .cta-actions .btn{flex:1 1 auto;}
  .faq-item summary{padding:16px 18px;font-size:15.5px;}
  .faq-body{padding:16px 18px;}
  .footer-grid{grid-template-columns:1fr;gap:28px;padding:40px 0;}
  .footer-bottom{flex-direction:column;align-items:flex-start;}
}
@media (max-width:479px){
  h1{font-size:26px;}
  .hero-tag{font-size:12px;}
  .btn{width:100%;}
  .hero-actions{flex-direction:column;}
  .cta-actions{flex-direction:column;}
}

/* roulang page: article */
:root{
  --c-primary:#1D5BD6;
  --c-primary-600:#164BB0;
  --c-primary-100:#EAF1FF;
  --c-accent:#E9963F;
  --c-accent-100:#FDF3E4;
  --c-ink:#0F1B2D;
  --c-ink-2:#3C4A62;
  --c-muted:#6B7A90;
  --c-line:#E4E9F2;
  --c-bg:#F6F8FB;
  --c-surface:#FFFFFF;
  --c-footer:#0F2440;
  --c-success:#12A150;
  --c-warning:#E9963F;
  --c-error:#DC3A3A;
  --r-card:16px;
  --r-img:12px;
  --r-btn:10px;
  --r-panel:20px;
  --sh-xs:0 1px 2px rgba(15,27,45,.04);
  --sh-sm:0 2px 8px rgba(15,27,45,.06);
  --sh-md:0 8px 24px rgba(15,27,45,.08);
  --sh-lg:0 18px 48px rgba(15,27,45,.10);
  --ease:cubic-bezier(.2,.7,.3,1);
}
*,*::before,*::after{box-sizing:border-box}
html{-webkit-text-size-adjust:100%}
body{
  margin:0;
  font-family:"Inter",-apple-system,"PingFang SC","HarmonyOS Sans SC","Microsoft YaHei","Source Han Sans SC",sans-serif;
  font-size:16px;
  line-height:1.85;
  color:var(--c-ink-2);
  background:var(--c-bg);
  -webkit-font-smoothing:antialiased;
}
img{max-width:100%;display:block;object-fit:cover;background:#EDF1F7}
a{color:var(--c-primary);text-decoration:none;transition:color 200ms var(--ease)}
a:hover{color:var(--c-primary-600)}
h1,h2,h3,h4{margin:0;color:var(--c-ink);letter-spacing:-.01em}
p{margin:0}
ul,ol{margin:0;padding:0}
button,input{font:inherit;color:inherit}
button{cursor:pointer;border:0;background:none}
:focus-visible{outline:2px solid var(--c-primary);outline-offset:2px;box-shadow:0 0 0 3px rgba(29,91,214,.18);border-radius:6px}
::selection{background:rgba(29,91,214,.18)}
::-webkit-scrollbar{width:8px;height:8px}
::-webkit-scrollbar-thumb{background:#C6D2E4;border-radius:8px}
::-webkit-scrollbar-track{background:transparent}

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

/* ---------- Header ---------- */
.site-header{
  position:sticky;top:0;z-index:50;background:#fff;
  border-bottom:1px solid var(--c-line);
  transition:box-shadow 200ms var(--ease);
}
.site-header.is-scrolled{box-shadow:var(--sh-sm)}
.header-inner{display:flex;align-items:center;gap:24px;height:70px}
.brand{display:flex;align-items:center;gap:10px;flex:0 0 auto;color:var(--c-ink)}
.brand svg{color:var(--c-primary);flex:0 0 auto}
.brand-name{font-size:17px;font-weight:700;color:var(--c-ink);letter-spacing:-.01em;white-space:nowrap}
.main-nav{display:flex;align-items:center;gap:4px;flex:1 1 auto;justify-content:center}
.main-nav a{
  position:relative;display:inline-flex;align-items:center;height:38px;padding:0 14px;
  font-size:15px;color:var(--c-ink-2);border-radius:999px;transition:all 200ms var(--ease);white-space:nowrap;
}
.main-nav a:hover{color:var(--c-primary);background:var(--c-primary-100)}
.main-nav a.active{color:var(--c-primary);font-weight:600;background:var(--c-primary-100)}
.header-actions{display:flex;align-items:center;gap:12px;flex:0 0 auto}
.search-form{
  display:flex;align-items:center;gap:8px;height:40px;padding:0 14px;width:240px;
  background:var(--c-bg);border:1px solid var(--c-line);border-radius:999px;
  transition:all 200ms var(--ease);color:var(--c-muted);
}
.search-form:focus-within{border-color:var(--c-primary);background:#fff;box-shadow:0 0 0 3px rgba(29,91,214,.18)}
.search-form input{flex:1;min-width:0;border:0;background:none;outline:none;font-size:14px;color:var(--c-ink)}
.search-form input::placeholder{color:var(--c-muted);font-size:13.5px}
.menu-toggle{
  display:none;width:44px;height:44px;align-items:center;justify-content:center;
  border-radius:var(--r-btn);color:var(--c-ink);background:var(--c-bg);border:1px solid var(--c-line);
}
.menu-toggle:hover{background:var(--c-primary-100);color:var(--c-primary)}

/* ---------- Buttons ---------- */
.btn{
  display:inline-flex;align-items:center;justify-content:center;gap:8px;
  height:44px;padding:0 24px;border-radius:var(--r-btn);
  font-size:15px;font-weight:600;line-height:1;
  transition:all 200ms var(--ease);border:1px solid transparent;white-space:nowrap;
}
.btn-primary{background:var(--c-primary);color:#fff}
.btn-primary:hover{background:var(--c-primary-600);color:#fff;transform:translateY(-1px);box-shadow:var(--sh-sm)}
.btn-primary:active{transform:translateY(0)}
.btn-outline{background:#fff;border-color:#D7E0EF;color:var(--c-primary)}
.btn-outline:hover{border-color:var(--c-primary);background:var(--c-primary-100);color:var(--c-primary-600)}
.btn-pill{border-radius:999px}
.btn-sm{height:38px;padding:0 18px;font-size:14px}
.btn-link{display:inline-flex;align-items:center;gap:6px;font-size:15px;font-weight:600;color:var(--c-primary);height:auto;padding:0}
.btn-link:hover{color:var(--c-primary-600);text-decoration:underline;text-underline-offset:4px}
.btn[disabled]{background:#C9D3E3;color:#fff;cursor:not-allowed;transform:none;box-shadow:none}

.badge{
  display:inline-flex;align-items:center;height:26px;padding:0 12px;border-radius:999px;
  background:var(--c-primary-100);color:var(--c-primary);font-size:12px;font-weight:600;letter-spacing:.02em;
}
.badge-accent{background:var(--c-accent-100);color:#B4700F}

/* ---------- Drawer ---------- */
.drawer-mask{
  position:fixed;inset:0;background:rgba(15,27,45,.45);z-index:60;
  opacity:0;visibility:hidden;transition:opacity 200ms var(--ease),visibility 200ms var(--ease);
}
.drawer-mask.show{opacity:1;visibility:visible}
.drawer{
  position:fixed;top:0;right:0;height:100%;width:84%;max-width:360px;background:#fff;z-index:61;
  transform:translateX(100%);transition:transform 260ms var(--ease);
  display:flex;flex-direction:column;padding:20px;overflow-y:auto;
}
.drawer.open{transform:translateX(0)}
.drawer-head{display:flex;align-items:center;justify-content:space-between;gap:12px;padding-bottom:16px;border-bottom:1px solid var(--c-line)}
.drawer-close{
  width:44px;height:44px;display:inline-flex;align-items:center;justify-content:center;
  border-radius:var(--r-btn);color:var(--c-ink-2);background:var(--c-bg);
}
.drawer-close:hover{background:var(--c-primary-100);color:var(--c-primary)}
.drawer-search{width:100%;margin:16px 0 8px}
.drawer-nav{display:flex;flex-direction:column;gap:4px;padding:8px 0}
.drawer-nav a{padding:12px 14px;border-radius:var(--r-btn);font-size:15px;color:var(--c-ink-2);font-weight:500}
.drawer-nav a:hover{background:var(--c-primary-100);color:var(--c-primary)}
.drawer-nav a.active{background:var(--c-primary-100);color:var(--c-primary);font-weight:600}
.drawer-cta{width:100%;margin-top:12px}
.drawer-foot{margin-top:auto;padding-top:20px;border-top:1px solid var(--c-line);font-size:13px;color:var(--c-muted);line-height:1.9}

/* ---------- Article band ---------- */
.article-band{
  background:linear-gradient(180deg,#FFFFFF 0%,#F2F6FD 100%);
  border-bottom:1px solid var(--c-line);
  padding:20px 0 56px;
}
.breadcrumb{display:flex;flex-wrap:wrap;align-items:center;gap:8px;font-size:14px;color:var(--c-muted);padding:6px 0 26px}
.breadcrumb a{color:var(--c-muted)}
.breadcrumb a:hover{color:var(--c-primary)}
.breadcrumb .sep{color:#B7C3D6}
.breadcrumb .current{color:var(--c-ink);font-weight:500}
.article-head .badge{margin-bottom:16px}
.article-title{
  font-size:clamp(26px,3.2vw,40px);line-height:1.25;font-weight:700;max-width:900px;
  display:-webkit-box;-webkit-line-clamp:2;-webkit-box-orient:vertical;overflow:hidden;
}
.article-meta{
  display:flex;flex-wrap:wrap;align-items:center;gap:10px 22px;margin-top:20px;font-size:14px;color:var(--c-muted);
}
.meta-item{display:inline-flex;align-items:center;gap:7px}
.meta-item svg{color:var(--c-accent);flex:0 0 auto}
.meta-item time{color:var(--c-muted)}
.head-actions{display:flex;align-items:center;gap:8px;margin-left:auto}
.action-btn{
  width:36px;height:36px;display:inline-flex;align-items:center;justify-content:center;
  border-radius:var(--r-btn);border:1px solid var(--c-line);background:#fff;color:var(--c-ink-2);
  transition:all 200ms var(--ease);position:relative;
}
.action-btn:hover{background:var(--c-primary-100);color:var(--c-primary);border-color:#CBD9F3}
.action-btn.is-on{background:var(--c-primary-100);color:var(--c-primary);border-color:#CBD9F3}
.toast-tip{
  position:absolute;bottom:calc(100% + 8px);right:0;white-space:nowrap;font-size:12px;color:#fff;
  background:var(--c-ink);padding:4px 10px;border-radius:8px;opacity:0;transform:translateY(4px);
  transition:all 200ms var(--ease);pointer-events:none;
}
.toast-tip.show{opacity:1;transform:translateY(0)}

/* ---------- Article layout ---------- */
main{padding:56px 0 88px}
.article-layout{display:block}
.article-main{max-width:760px;margin:0 auto;min-width:0}

.toc-inline{
  border:1px solid var(--c-line);background:#fff;border-radius:var(--r-card);
  padding:16px 20px;margin-bottom:32px;box-shadow:var(--sh-xs);
}
.toc-inline summary{
  cursor:pointer;font-size:15px;font-weight:600;color:var(--c-ink);list-style:none;
  display:flex;align-items:center;gap:8px;
}
.toc-inline summary::-webkit-details-marker{display:none}
.toc-inline summary svg{color:var(--c-primary)}
.toc-inline[open] summary{margin-bottom:12px}

.article-body{font-size:16px;line-height:1.9;color:var(--c-ink-2)}
.article-body > *:first-child{margin-top:0}
.article-body p{margin:0 0 1.5em}
.article-body > p:first-of-type{font-size:18px;line-height:1.8;color:#243247}
.article-body h2{
  position:relative;font-size:26px;line-height:1.35;font-weight:700;color:var(--c-ink);
  margin:44px 0 16px;padding-left:16px;scroll-margin-top:96px;
}
.article-body h2::before{
  content:"";position:absolute;left:0;top:7px;bottom:7px;width:4px;border-radius:2px;background:var(--c-primary);
}
.article-body h3{
  position:relative;font-size:19px;line-height:1.5;font-weight:600;color:var(--c-ink);
  margin:32px 0 12px;padding-left:16px;scroll-margin-top:96px;
}
.article-body h3::before{
  content:"";position:absolute;left:0;top:11px;width:7px;height:7px;border-radius:50%;background:var(--c-accent);
}
.article-body h4{font-size:17px;font-weight:600;margin:24px 0 10px;color:var(--c-ink)}
.article-body ul,.article-body ol{margin:0 0 1.5em;padding-left:4px;list-style:none}
.article-body li{position:relative;padding-left:24px;margin-bottom:8px}
.article-body ul li::before{
  content:"";position:absolute;left:4px;top:12px;width:7px;height:7px;border-radius:2px;background:var(--c-primary);opacity:.75;
}
.article-body ol{counter-reset:item}
.article-body ol li{counter-increment:item;padding-left:30px}
.article-body ol li::before{
  content:counter(item);position:absolute;left:0;top:1px;width:22px;height:22px;border-radius:6px;
  background:var(--c-primary-100);color:var(--c-primary);font-size:12px;font-weight:700;
  display:flex;align-items:center;justify-content:center;font-family:"Inter",sans-serif;
}
.article-body blockquote{
  margin:0 0 1.6em;padding:20px 22px;background:#F8FAFD;border-left:3px solid var(--c-primary);
  border-radius:0 var(--r-img) var(--r-img) 0;color:#33415A;
}
.article-body blockquote p:last-child{margin-bottom:0}
.article-body img{border-radius:var(--r-img);margin:24px auto}
.article-body figure{margin:24px 0}
.article-body figcaption{font-size:13px;color:var(--c-muted);text-align:center;margin-top:10px}
.article-body a{color:var(--c-primary);text-decoration:underline;text-underline-offset:3px}
.article-body a:hover{color:var(--c-primary-600)}
.article-body table{width:100%;border-collapse:collapse;margin:0 0 1.6em;font-size:15px;border:1px solid var(--c-line);border-radius:var(--r-img);overflow:hidden}
.article-body th,.article-body td{border:1px solid var(--c-line);padding:11px 14px;text-align:left}
.article-body th{background:#F6F8FB;font-weight:600;color:var(--c-ink)}
.article-body tbody tr:nth-child(even){background:#FBFCFE}
.article-body code{background:#F2F5FA;border-radius:6px;padding:2px 6px;font-size:14px;font-family:ui-monospace,SFMono-Regular,Menlo,monospace}
.article-body hr{border:0;border-top:1px solid var(--c-line);margin:32px 0}

/* ---------- TOC ---------- */
.toc-list{list-style:none;padding:0;margin:0;display:flex;flex-direction:column;gap:2px}
.toc-list a{
  display:block;padding:7px 12px;font-size:13.5px;color:var(--c-ink-2);border-radius:8px;
  border-left:2px solid transparent;transition:all 200ms var(--ease);line-height:1.6;
}
.toc-list a:hover{background:var(--c-primary-100);color:var(--c-primary)}
.toc-list a.active{color:var(--c-primary);font-weight:600;border-left-color:var(--c-primary);background:var(--c-primary-100)}
.toc-3 a{padding-left:26px;font-size:13px}

.article-aside{display:none}
.aside-panel{
  background:#fff;border:1px solid var(--c-line);border-radius:var(--r-card);
  padding:20px;box-shadow:var(--sh-xs);margin-bottom:20px;
}
.aside-panel h3{font-size:15px;font-weight:600;margin-bottom:14px;display:flex;align-items:center;gap:8px}
.aside-panel h3 svg{color:var(--c-primary)}
.aside-links{list-style:none;display:flex;flex-direction:column;gap:14px}
.aside-links a{font-size:14px;color:var(--c-ink-2);line-height:1.6;display:block}
.aside-links a:hover{color:var(--c-primary)}
.aside-links span{display:block;font-size:12.5px;color:var(--c-muted);margin-top:4px}

/* ---------- Tags / related ---------- */
.tag-row{display:flex;flex-wrap:wrap;gap:10px;margin:44px 0 0;padding-top:28px;border-top:1px solid var(--c-line)}
.tag{
  display:inline-flex;align-items:center;height:32px;padding:0 14px;border-radius:999px;
  background:#fff;border:1px solid var(--c-line);font-size:13px;color:var(--c-ink-2);transition:all 200ms var(--ease);
}
.tag:hover{border-color:var(--c-primary);color:var(--c-primary);background:var(--c-primary-100)}

.related{margin-top:64px}
.section-head{display:flex;align-items:flex-end;justify-content:space-between;gap:16px;margin-bottom:24px}
.section-head h2{font-size:24px;font-weight:700}
.section-head p{font-size:14px;color:var(--c-muted);margin-top:6px}
.related-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:20px}
.card{
  background:#fff;border:1px solid var(--c-line);border-radius:var(--r-card);overflow:hidden;
  box-shadow:var(--sh-sm);transition:all 200ms var(--ease);display:flex;flex-direction:column;
}
.card:hover{box-shadow:var(--sh-md);transform:translateY(-2px)}
.card:hover h3{color:var(--c-primary)}
.card-media{aspect-ratio:16/10;overflow:hidden;background:#EDF1F7}
.card-media img{width:100%;height:100%;transition:transform 300ms var(--ease)}
.card:hover .card-media img{transform:scale(1.03)}
.card-body{padding:18px 20px 20px;display:flex;flex-direction:column;gap:10px;flex:1}
.card-body h3{font-size:17px;line-height:1.5;font-weight:600;display:-webkit-box;-webkit-line-clamp:2;-webkit-box-orient:vertical;overflow:hidden}
.card-body p{font-size:14px;color:var(--c-muted);line-height:1.7;display:-webkit-box;-webkit-line-clamp:2;-webkit-box-orient:vertical;overflow:hidden}
.meta-line{display:flex;align-items:center;gap:10px;font-size:13px;color:var(--c-muted);margin-top:auto}

.back-row{display:flex;flex-wrap:wrap;gap:14px;margin-top:48px;padding-top:32px;border-top:1px solid var(--c-line)}

/* ---------- Empty state ---------- */
.empty-state{
  background:#fff;border:1px solid var(--c-line);border-radius:var(--r-panel);
  padding:64px 32px;text-align:center;box-shadow:var(--sh-xs);
}
.empty-state .empty-icon{
  width:64px;height:64px;border-radius:20px;margin:0 auto 20px;
  display:flex;align-items:center;justify-content:center;
  border:1.5px dashed #C3D2EA;color:var(--c-primary);background:#FBFCFE;
}
.empty-state h2{font-size:20px;margin-bottom:12px}
.empty-state p{font-size:14.5px;color:var(--c-muted);max-width:440px;margin:0 auto 24px}

/* ---------- CTA panel ---------- */
.cta-panel{
  background:var(--c-primary-600);border-radius:var(--r-panel);padding:48px;
  display:flex;align-items:center;justify-content:space-between;gap:32px;flex-wrap:wrap;
  margin-top:72px;
}
.cta-panel h2{color:#fff;font-size:24px;line-height:1.4;margin-bottom:10px}
.cta-panel p{color:rgba(255,255,255,.78);font-size:15px;max-width:560px;line-height:1.8}
.cta-actions{display:flex;gap:12px;flex-wrap:wrap}
.cta-panel .btn-light{background:#fff;color:var(--c-primary-600)}
.cta-panel .btn-light:hover{background:#EAF1FF;color:var(--c-primary-600);transform:translateY(-1px)}
.cta-panel .btn-ghost-l{background:transparent;border-color:rgba(255,255,255,.45);color:#fff}
.cta-panel .btn-ghost-l:hover{background:rgba(255,255,255,.12);color:#fff;border-color:#fff}

/* ---------- Footer ---------- */
.site-footer{background:var(--c-footer);color:rgba(255,255,255,.72);padding:64px 0 0;margin-top:0}
.footer-grid{display:grid;grid-template-columns:1.6fr 1fr 1fr 1.1fr;gap:40px}
.footer-brand{display:flex;align-items:center;gap:10px;color:#fff;margin-bottom:16px}
.footer-brand svg{color:#7FA6F0}
.footer-brand span{font-size:16px;font-weight:700;color:#fff}
.footer-about{font-size:14px;line-height:1.9;color:rgba(255,255,255,.68);max-width:320px}
.footer-social{display:flex;gap:10px;margin-top:20px}
.footer-social a{
  width:38px;height:38px;border-radius:10px;display:inline-flex;align-items:center;justify-content:center;
  background:rgba(255,255,255,.08);color:rgba(255,255,255,.8);transition:all 200ms var(--ease);
}
.footer-social a:hover{background:rgba(255,255,255,.18);color:#fff}
.footer-col h4{font-size:14px;font-weight:600;color:rgba(255,255,255,.92);margin-bottom:16px}
.footer-col ul{list-style:none;display:flex;flex-direction:column;gap:12px}
.footer-col li{font-size:14px;color:rgba(255,255,255,.72)}
.footer-col a{font-size:14px;color:rgba(255,255,255,.72)}
.footer-col a:hover{color:#fff;text-decoration:underline;text-underline-offset:3px}
.footer-bottom{
  margin-top:48px;border-top:1px solid rgba(255,255,255,.12);padding:20px 0 28px;
  display:flex;flex-wrap:wrap;gap:10px;justify-content:space-between;font-size:13px;color:rgba(255,255,255,.55);
}

/* ---------- Responsive ---------- */
@media (min-width:1280px){
  .article-layout{display:grid;grid-template-columns:minmax(0,1fr) 280px;gap:56px;align-items:start}
  .article-main{margin:0;max-width:760px}
  .article-aside{display:block;position:sticky;top:94px}
  .toc-inline{display:none}
}
@media (max-width:1279px){
  .related-grid{grid-template-columns:repeat(2,1fr)}
}
@media (max-width:1023px){
  .main-nav{display:none}
  .search-form{display:none}
  .menu-toggle{display:inline-flex}
  .header-inner{gap:12px}
  .footer-grid{grid-template-columns:1fr 1fr;gap:32px}
  main{padding:40px 0 64px}
  .cta-panel{padding:36px}
  .site-footer{padding-top:48px}
}
@media (max-width:767px){
  .container{padding:0 16px}
  .article-band{padding:14px 0 40px}
  .breadcrumb{padding-bottom:18px;font-size:13px}
  .related-grid{grid-template-columns:1fr}
  .article-body h2{font-size:22px;margin-top:36px}
  .article-body h3{font-size:18px}
  .article-body > p:first-of-type{font-size:17px}
  main{padding:32px 0 56px}
  .cta-panel{padding:28px 22px;border-radius:16px}
  .cta-panel h2{font-size:20px}
  .cta-actions{width:100%}
  .cta-actions .btn{flex:1 1 auto;justify-content:center}
  .head-actions{margin-left:0;width:100%}
  .section-head{flex-direction:column;align-items:flex-start}
}
@media (max-width:559px){
  .footer-grid{grid-template-columns:1fr}
  .header-actions .btn-primary{display:none}
  .brand-name{font-size:15px}
  .related-grid{gap:16px}
  .back-row .btn{width:100%;justify-content:center}
}

/* roulang page: category1 */
:root{
  --c-primary:#1D5BD6;
  --c-primary-600:#164BB0;
  --c-primary-100:#EAF1FF;
  --c-accent:#E9963F;
  --c-accent-100:#FDF3E4;
  --c-ink:#0F1B2D;
  --c-ink-2:#3C4A62;
  --c-muted:#6B7A90;
  --c-line:#E4E9F2;
  --c-bg:#F6F8FB;
  --c-surface:#FFFFFF;
  --c-footer:#0F2440;
  --c-success:#12A150;
  --c-warning:#E9963F;
  --c-error:#DC3A3A;
  --r-card:16px;
  --r-img:12px;
  --r-btn:10px;
  --r-pill:999px;
  --sh-xs:0 1px 2px rgba(15,27,45,.04);
  --sh-sm:0 2px 8px rgba(15,27,45,.06);
  --sh-md:0 8px 24px rgba(15,27,45,.08);
  --sh-lg:0 18px 48px rgba(15,27,45,.10);
  --t:200ms cubic-bezier(.2,.7,.3,1);
  --header-h:70px;
}
*,*::before,*::after{box-sizing:border-box}
html{-webkit-text-size-adjust:100%;scroll-behavior:smooth}
body{
  margin:0;
  font-family:"Inter",system-ui,-apple-system,"PingFang SC","HarmonyOS Sans SC","Microsoft YaHei","Source Han Sans SC",sans-serif;
  font-size:16px;
  line-height:1.85;
  color:var(--c-ink-2);
  background:var(--c-bg);
  overflow-x:hidden;
}
h1,h2,h3,h4{margin:0;color:var(--c-ink);font-weight:700;font-family:inherit}
h1{font-size:40px;line-height:1.25;font-weight:700}
h2{font-size:28px;line-height:1.35;font-weight:700}
h3{font-size:20px;line-height:1.5;font-weight:600}
p{margin:0 0 1em}
p:last-child{margin-bottom:0}
img{max-width:100%;height:auto;display:block;background:#EDF1F7}
a{color:var(--c-primary);text-decoration:none}
a:hover{color:var(--c-primary-600)}
ul,ol{margin:0;padding:0}
button{font:inherit;color:inherit}
input{font:inherit}
::selection{background:rgba(29,91,214,.18)}
::-webkit-scrollbar{width:8px;height:8px}
::-webkit-scrollbar-track{background:transparent}
::-webkit-scrollbar-thumb{background:#C4CEDD;border-radius:999px}
::-webkit-scrollbar-thumb:hover{background:#A9B6C9}
a:focus-visible,button:focus-visible,input:focus-visible,[tabindex]:focus-visible{
  outline:2px solid var(--c-primary);
  outline-offset:2px;
  box-shadow:0 0 0 3px rgba(29,91,214,.18);
  border-radius:var(--r-btn);
}
.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}
.container{width:100%;max-width:1200px;margin:0 auto;padding:0 24px}

/* ============ 按钮 / 徽章 ============ */
.btn{
  display:inline-flex;align-items:center;justify-content:center;gap:8px;
  height:44px;padding:0 24px;border-radius:var(--r-btn);
  font-size:15px;font-weight:600;line-height:1;white-space:nowrap;
  border:1px solid transparent;background:none;cursor:pointer;
  transition:transform var(--t),background-color var(--t),border-color var(--t),box-shadow var(--t),color var(--t);
}
.btn-primary{background:var(--c-primary);color:#fff;box-shadow:var(--sh-xs)}
.btn-primary:hover{background:var(--c-primary-600);color:#fff;transform:translateY(-1px);box-shadow:var(--sh-sm)}
.btn-primary:active{transform:translateY(0)}
.btn-outline{background:#fff;border-color:#D7E0EF;color:var(--c-primary)}
.btn-outline:hover{border-color:var(--c-primary);background:var(--c-primary-100);color:var(--c-primary-600)}
.btn-light{background:#fff;color:var(--c-primary-600)}
.btn-light:hover{background:#F2F6FD;color:var(--c-primary-600);transform:translateY(-1px)}
.btn-outline-light{background:transparent;border-color:rgba(255,255,255,.5);color:#fff}
.btn-outline-light:hover{background:rgba(255,255,255,.12);border-color:#fff;color:#fff}
.btn-pill{border-radius:var(--r-pill)}
.btn-sm{height:38px;padding:0 18px;font-size:14px}
.badge{
  display:inline-flex;align-items:center;height:24px;padding:0 10px;
  border-radius:var(--r-pill);font-size:12px;font-weight:500;
  background:var(--c-primary-100);color:var(--c-primary);
}
.badge-accent{background:var(--c-accent-100);color:#B4700F}

/* ============ 头部导航 ============ */
.site-header{
  position:sticky;top:0;z-index:50;
  background:#fff;border-bottom:1px solid var(--c-line);
  transition:box-shadow var(--t);
}
.site-header.scrolled{box-shadow:var(--sh-sm)}
.header-inner{display:flex;align-items:center;gap:20px;height:var(--header-h)}
.brand{display:flex;align-items:center;gap:10px;font-size:17px;font-weight:700;color:var(--c-ink);white-space:nowrap;flex:none}
.brand:hover{color:var(--c-ink)}
.brand-mark{color:var(--c-primary);flex:none}
.brand-text{letter-spacing:.01em}
.main-nav{display:flex;align-items:center;gap:4px;margin-left:6px}
.main-nav a{
  position:relative;padding:8px 13px;border-radius:var(--r-pill);
  font-size:15px;color:var(--c-ink-2);transition:background-color var(--t),color var(--t);
}
.main-nav a:hover{color:var(--c-primary);background:var(--c-primary-100)}
.main-nav a.active{color:var(--c-primary);font-weight:600;background:var(--c-primary-100)}
.header-actions{display:flex;align-items:center;gap:12px;margin-left:auto}
.search-box{position:relative;width:220px}
.search-input{
  width:100%;height:40px;padding:0 40px 0 16px;
  border:1px solid #D7E0EF;border-radius:var(--r-pill);
  background:#fff;font-size:14px;color:var(--c-ink);
  transition:border-color var(--t),box-shadow var(--t);
}
.search-input::placeholder{color:#9AA8BC}
.search-input:focus{outline:none;border-color:var(--c-primary);box-shadow:0 0 0 3px rgba(29,91,214,.16)}
.search-icon{position:absolute;right:14px;top:50%;transform:translateY(-50%);color:var(--c-muted);pointer-events:none}
.menu-toggle{
  display:none;width:44px;height:44px;align-items:center;justify-content:center;
  border:1px solid var(--c-line);border-radius:12px;background:#fff;color:var(--c-ink);cursor:pointer;
  transition:background-color var(--t),border-color var(--t);
}
.menu-toggle:hover{background:var(--c-primary-100);border-color:#C9D8F5;color:var(--c-primary)}

/* ============ 移动抽屉 ============ */
.drawer-mask{
  position:fixed;inset:0;background:rgba(15,27,45,.45);z-index:60;
  opacity:0;visibility:hidden;transition:opacity var(--t),visibility var(--t);
}
.drawer{
  position:fixed;top:0;right:0;height:100%;width:84%;max-width:360px;z-index:61;
  background:#fff;padding:20px;display:flex;flex-direction:column;gap:20px;
  overflow-y:auto;transform:translateX(102%);
  transition:transform 240ms cubic-bezier(.2,.7,.3,1);
  box-shadow:var(--sh-lg);
}
body.drawer-open .drawer{transform:translateX(0)}
body.drawer-open .drawer-mask{opacity:1;visibility:visible}
body.drawer-open{overflow:hidden}
.drawer-head{display:flex;align-items:center;justify-content:space-between;gap:12px}
.drawer-close{
  width:44px;height:44px;flex:none;display:flex;align-items:center;justify-content:center;
  border:1px solid var(--c-line);border-radius:12px;background:#fff;color:var(--c-ink);cursor:pointer;
  transition:background-color var(--t),color var(--t),border-color var(--t);
}
.drawer-close:hover{background:var(--c-primary-100);color:var(--c-primary);border-color:#C9D8F5}
.drawer-search{width:100%}
.drawer-nav{display:grid;gap:4px}
.drawer-nav a{
  padding:12px 14px;border-radius:12px;font-size:15.5px;color:var(--c-ink-2);
  transition:background-color var(--t),color var(--t);
}
.drawer-nav a:hover{background:var(--c-primary-100);color:var(--c-primary)}
.drawer-nav a.active{background:var(--c-primary-100);color:var(--c-primary);font-weight:600}
.drawer-cta{width:100%}
.drawer-foot{margin-top:auto;padding-top:20px;border-top:1px solid var(--c-line);font-size:13px;color:var(--c-muted);line-height:1.9}

/* ============ 页头横幅 ============ */
.page-hero{
  background:linear-gradient(180deg,var(--c-primary-100) 0%,#FFFFFF 100%);
  border-bottom:1px solid var(--c-line);
  padding:32px 0 40px;
  position:relative;
  overflow:hidden;
}
.page-hero::after{
  content:"";position:absolute;inset:0;pointer-events:none;
  background-image:radial-gradient(rgba(29,91,214,.06) 1px,transparent 1px);
  background-size:22px 22px;opacity:.9;
}
.page-hero .container{position:relative;z-index:1}
.breadcrumb{display:flex;align-items:center;flex-wrap:wrap;gap:8px;font-size:14px;line-height:1.6;color:var(--c-muted);margin-bottom:18px}
.breadcrumb a{color:var(--c-muted)}
.breadcrumb a:hover{color:var(--c-primary)}
.breadcrumb .sep{color:#C3CCDA}
.breadcrumb [aria-current="page"]{color:var(--c-ink);font-weight:500}
.page-hero-grid{display:grid;grid-template-columns:1.55fr 1fr;gap:40px;align-items:center}
.page-title{margin-bottom:14px;min-height:1em}
.page-lead{font-size:18px;line-height:1.8;color:var(--c-ink-2);max-width:620px;margin:0}
.page-hero-media{border-radius:var(--r-card);overflow:hidden;box-shadow:var(--sh-md)}
.page-hero-media img{width:100%;aspect-ratio:16/10;object-fit:cover;border-radius:var(--r-card)}

/* ============ 主体布局 ============ */
.layout{display:grid;grid-template-columns:240px 1fr;gap:40px;align-items:start;padding:56px 0 0}
.side-col{position:sticky;top:calc(var(--header-h) + 24px)}
.side-panel{
  background:#fff;border:1px solid var(--c-line);border-radius:var(--r-card);
  padding:14px;box-shadow:var(--sh-xs);
}
.side-title{font-size:13px;font-weight:600;color:var(--c-muted);margin:6px 6px 10px;letter-spacing:.04em}
.catalog-nav{display:grid;gap:4px}
.catalog-nav a{
  display:grid;grid-template-columns:auto 1fr;column-gap:10px;
  padding:11px 12px;border-radius:12px;
  transition:background-color var(--t),transform var(--t);
}
.catalog-nav a:hover{background:var(--c-primary-100);transform:translateX(2px)}
.catalog-nav a:hover .cn-title{color:var(--c-primary)}
.catalog-nav a.active{background:var(--c-primary-100)}
.catalog-nav a.active .cn-title{color:var(--c-primary);font-weight:600}
.catalog-nav .num{
  font-family:"Inter",system-ui,sans-serif;font-size:13px;font-weight:700;
  color:var(--c-accent);line-height:1.6;letter-spacing:.02em;
}
.catalog-nav .cn-title{font-size:14.5px;font-weight:600;color:var(--c-ink);line-height:1.5}
.catalog-nav .cn-desc{grid-column:2;font-size:12.5px;color:var(--c-muted);line-height:1.6;margin-top:2px}

.main-col{min-width:0}
.block{margin-top:56px}
.block:first-child{margin-top:0}
.section-head{margin-bottom:24px}
.section-kicker{
  display:inline-flex;align-items:center;gap:8px;height:26px;padding:0 12px;margin-bottom:12px;
  border-radius:var(--r-pill);background:var(--c-primary-100);color:var(--c-primary);
  font-size:13px;font-weight:600;
}
.section-title{margin-bottom:10px}
.section-desc{font-size:16px;line-height:1.85;color:var(--c-ink-2);max-width:720px;margin:0}

/* ============ 要点短条 ============ */
.fact-row{display:grid;grid-template-columns:repeat(3,1fr);gap:16px}
.fact{
  display:flex;gap:12px;padding:16px 18px;background:#fff;
  border:1px solid var(--c-line);border-radius:14px;box-shadow:var(--sh-xs);
  transition:transform var(--t),box-shadow var(--t);
}
.fact:hover{transform:translateY(-2px);box-shadow:var(--sh-sm)}
.fact-icon{
  width:38px;height:38px;flex:none;border-radius:10px;display:flex;align-items:center;justify-content:center;
  background:var(--c-primary-100);color:var(--c-primary);
}
.fact b{display:block;font-size:15px;font-weight:600;color:var(--c-ink);line-height:1.5}
.fact span{display:block;font-size:13px;color:var(--c-muted);line-height:1.6;margin-top:2px}

/* ============ 步骤长卡 ============ */
.step-list{list-style:none;display:grid;gap:20px}
.step-card{
  display:grid;grid-template-columns:88px 1fr;gap:24px;
  padding:24px;background:#fff;border:1px solid var(--c-line);border-radius:var(--r-card);
  box-shadow:var(--sh-sm);
  transition:transform var(--t),box-shadow var(--t),border-color var(--t);
}
.step-card:hover{transform:translateY(-2px);box-shadow:var(--sh-md);border-color:#D6E2F8}
.step-num{
  font-family:"Inter",system-ui,sans-serif;font-size:40px;font-weight:700;line-height:1;
  color:var(--c-primary);letter-spacing:-.02em;padding-top:2px;
}
.step-body h3{margin-bottom:10px}
.step-card:hover .step-body h3{color:var(--c-primary)}
.step-body p{font-size:16px;line-height:1.85;color:var(--c-ink-2);margin:0}
.step-media{margin-top:16px;border-radius:var(--r-img);overflow:hidden;background:#EDF1F7}
.step-media img{width:100%;aspect-ratio:16/9;object-fit:cover;transition:transform var(--t)}
.step-card:hover .step-media img{transform:scale(1.03)}
.step-tags{display:flex;flex-wrap:wrap;gap:8px;margin-top:14px}

/* ============ 场景卡 ============ */
.scene-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:24px}
.scene-card{
  display:flex;flex-direction:column;background:#fff;border:1px solid var(--c-line);
  border-radius:var(--r-card);overflow:hidden;box-shadow:var(--sh-sm);
  transition:transform var(--t),box-shadow var(--t);
}
.scene-card:hover{transform:translateY(-2px);box-shadow:var(--sh-md)}
.scene-thumb{aspect-ratio:16/10;overflow:hidden;background:#EDF1F7}
.scene-thumb img{width:100%;height:100%;object-fit:cover;transition:transform var(--t)}
.scene-card:hover .scene-thumb img{transform:scale(1.03)}
.scene-body{padding:20px 22px 24px;display:flex;flex-direction:column;gap:10px}
.scene-body h3{font-size:18px}
.scene-card:hover .scene-body h3{color:var(--c-primary)}
.scene-body p{font-size:15px;line-height:1.8;color:var(--c-ink-2);margin:0}
.scene-meta{display:flex;align-items:center;gap:8px;font-size:13px;color:var(--c-muted)}

/* ============ FAQ ============ */
.faq-list{display:grid;gap:12px}
.faq-item{
  background:#fff;border:1px solid var(--c-line);border-radius:12px;overflow:hidden;
  transition:border-color var(--t),box-shadow var(--t);
}
.faq-item:hover{border-color:#D6E2F8}
.faq-item.open{box-shadow:var(--sh-sm)}
.faq-q{
  width:100%;display:flex;align-items:center;justify-content:space-between;gap:16px;
  padding:18px 20px;background:none;border:0;cursor:pointer;text-align:left;
  font-size:16px;font-weight:600;color:var(--c-ink);line-height:1.6;
  transition:color var(--t);
}
.faq-q:hover{color:var(--c-primary)}
.faq-icon{width:22px;height:22px;flex:none;color:var(--c-primary);transition:transform 180ms cubic-bezier(.2,.7,.3,1)}
.faq-item.open .faq-icon{transform:rotate(45deg)}
.faq-a{
  max-height:0;overflow:hidden;background:#F8FAFD;
  transition:max-height 260ms cubic-bezier(.2,.7,.3,1);
}
.faq-item.open .faq-a{border-top:1px solid var(--c-line)}
.faq-a-inner{padding:18px 20px 20px;font-size:15px;line-height:1.8;color:var(--c-ink-2)}

/* ============ 提示面板 ============ */
.tip-panel{
  display:flex;gap:14px;padding:20px 22px;border-radius:14px;
  background:rgba(29,91,214,.08);border:1px solid rgba(29,91,214,.16);
}
.tip-panel .tip-icon{color:var(--c-primary);flex:none;margin-top:2px}
.tip-panel b{display:block;font-size:15px;color:var(--c-ink);font-weight:600;margin-bottom:4px}
.tip-panel p{font-size:14.5px;line-height:1.8;color:var(--c-ink-2);margin:0}

/* ============ CTA 面板 ============ */
.cta-band{
  margin-top:72px;background:var(--c-primary-600);border-radius:20px;
  padding:48px;display:flex;align-items:center;justify-content:space-between;gap:36px;
  box-shadow:var(--sh-md);
}
.cta-band h2{color:#fff;font-size:24px;line-height:1.4;margin-bottom:10px}
.cta-band p{color:rgba(255,255,255,.78);font-size:16px;line-height:1.8;max-width:560px;margin:0}
.cta-actions{display:flex;gap:12px;flex:none;flex-wrap:wrap}
.share-btn.is-done{background:rgba(255,255,255,.16);border-color:rgba(255,255,255,.7)}

/* ============ 页脚 ============ */
.site-footer{background:var(--c-footer);color:rgba(255,255,255,.72);padding:64px 0 0;margin-top:88px}
.footer-grid{display:grid;grid-template-columns:1.5fr 1fr 1fr 1fr;gap:40px}
.footer-brand{display:flex;align-items:center;gap:10px;color:#fff;font-size:17px;font-weight:700}
.footer-brand svg{color:#7FA8F5;flex:none}
.footer-about{font-size:14px;line-height:1.8;margin:16px 0 20px;max-width:320px;color:rgba(255,255,255,.72)}
.footer-social{display:flex;gap:12px}
.footer-social a{
  width:36px;height:36px;border-radius:10px;display:flex;align-items:center;justify-content:center;
  border:1px solid rgba(255,255,255,.16);color:rgba(255,255,255,.75);
  transition:background-color var(--t),color var(--t),border-color var(--t);
}
.footer-social a:hover{color:#fff;border-color:rgba(255,255,255,.42);background:rgba(255,255,255,.07)}
.footer-col h4{font-size:14px;font-weight:600;color:rgba(255,255,255,.92);margin:0 0 16px}
.footer-col ul{list-style:none;display:grid;gap:12px}
.footer-col li{font-size:14px;line-height:1.7;color:rgba(255,255,255,.72)}
.footer-col a{font-size:14px;color:rgba(255,255,255,.72);transition:color var(--t)}
.footer-col a:hover{color:#fff;text-decoration:underline;text-underline-offset:3px}
.footer-bottom{
  margin-top:48px;padding:20px 0;border-top:1px solid rgba(255,255,255,.12);
  display:flex;align-items:center;justify-content:space-between;gap:16px;flex-wrap:wrap;
  font-size:13px;color:rgba(255,255,255,.6);
}

/* ============ 响应式 ============ */
@media (max-width:1199px){
  .page-title{font-size:36px}
}
@media (max-width:1023px){
  .search-box{display:none}
  .header-inner{gap:16px}
  .main-nav a{padding:8px 11px;font-size:14.5px}
  .layout{grid-template-columns:1fr;gap:28px;padding-top:40px}
  .side-col{position:static}
  .catalog-nav{display:flex;gap:8px;overflow-x:auto;padding-bottom:4px}
  .catalog-nav a{flex:0 0 auto;min-width:170px;background:#F8FAFD}
  .catalog-nav a:hover{transform:none}
  .fact-row{grid-template-columns:repeat(2,1fr)}
  .scene-grid{grid-template-columns:repeat(2,1fr)}
  .cta-band{padding:40px}
}
@media (max-width:767px){
  body{font-size:15.5px}
  .container{padding:0 16px}
  .main-nav{display:none}
  .menu-toggle{display:flex}
  .header-actions{gap:8px}
  .brand{font-size:16px}
  h1{font-size:28px}
  h2{font-size:22px}
  .page-hero{padding:24px 0 32px}
  .page-hero-grid{grid-template-columns:1fr;gap:24px}
  .page-hero-media{display:none}
  .page-title{font-size:28px}
  .page-lead{font-size:16.5px}
  .layout{padding-top:32px}
  .block{margin-top:48px}
  .fact-row{grid-template-columns:1fr}
  .scene-grid{grid-template-columns:1fr}
  .step-card{grid-template-columns:1fr;gap:12px;padding:20px}
  .step-num{font-size:32px}
  .cta-band{flex-direction:column;align-items:flex-start;padding:28px 24px;border-radius:16px;margin-top:56px}
  .cta-actions{width:100%}
  .cta-actions .btn{flex:1 1 auto}
  .footer-grid{grid-template-columns:1fr 1fr;gap:32px}
  .site-footer{padding-top:48px;margin-top:64px}
  .footer-bottom{flex-direction:column;align-items:flex-start;gap:8px}
}
@media (max-width:479px){
  h1{font-size:26px}
  .page-title{font-size:26px}
  .footer-grid{grid-template-columns:1fr}
  .step-num{font-size:28px}
  .brand{font-size:15px}
  .brand-text{letter-spacing:0}
}

/* roulang page: category3 */
/* ============ 设计变量 ============ */
:root{
  --c-primary:#1D5BD6;
  --c-primary-600:#164BB0;
  --c-primary-100:#EAF1FF;
  --c-accent:#E9963F;
  --c-accent-100:#FDF3E4;
  --c-ink:#0F1B2D;
  --c-ink-2:#3C4A62;
  --c-muted:#6B7A90;
  --c-line:#E4E9F2;
  --c-bg:#F6F8FB;
  --c-surface:#FFFFFF;
  --c-footer:#0F2440;
  --c-ok:#12A150;
  --c-warn:#E9963F;
  --c-info:#1D5BD6;
  --c-err:#DC3A3A;
  --r-card:16px;
  --r-img:12px;
  --r-btn:10px;
  --r-panel:20px;
  --sh-xs:0 1px 2px rgba(15,27,45,.04);
  --sh-sm:0 2px 8px rgba(15,27,45,.06);
  --sh-md:0 8px 24px rgba(15,27,45,.08);
  --sh-lg:0 18px 48px rgba(15,27,45,.10);
  --ease:cubic-bezier(.2,.7,.3,1);
  --s-1:8px; --s-2:16px; --s-3:24px; --s-4:32px; --s-5:48px; --s-6:64px; --s-7:96px;
}

/* ============ reset / base ============ */
*,*::before,*::after{box-sizing:border-box}
html{-webkit-text-size-adjust:100%;scroll-behavior:smooth}
body{
  margin:0;
  font-family:"Inter",-apple-system,"PingFang SC","HarmonyOS Sans SC","Microsoft YaHei","Source Han Sans SC",sans-serif;
  font-size:16px;
  line-height:1.85;
  color:var(--c-ink-2);
  background:var(--c-bg);
  -webkit-font-smoothing:antialiased;
}
img{max-width:100%;display:block}
a{color:var(--c-primary);text-decoration:none;transition:color 200ms var(--ease),background-color 200ms var(--ease),border-color 200ms var(--ease),transform 200ms var(--ease)}
p{margin:0 0 1em}
h1,h2,h3,h4{margin:0;color:var(--c-ink);font-weight:700;line-height:1.35}
ul,ol{margin:0;padding:0;list-style:none}
button{font-family:inherit;cursor:pointer}
input,textarea,select{font-family:inherit;font-size:15px;color:var(--c-ink)}
:focus-visible{outline:2px solid var(--c-primary);outline-offset:2px;box-shadow:0 0 0 3px rgba(29,91,214,.18);border-radius:6px}
::selection{background:rgba(29,91,214,.18)}
::-webkit-scrollbar{width:8px;height:8px}
::-webkit-scrollbar-thumb{background:#C7D2E3;border-radius:8px}
::-webkit-scrollbar-track{background:transparent}

.container{max-width:1200px;margin:0 auto;padding:0 24px}
.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}
.section{padding:80px 0}
.section-head{max-width:760px;margin-bottom:32px}
.section-head h2{font-size:28px;line-height:1.35}
.section-head p{margin-top:12px;font-size:16px;color:var(--c-ink-2)}
.eyebrow{display:inline-flex;align-items:center;gap:8px;font-size:13px;font-weight:600;color:var(--c-primary);background:var(--c-primary-100);border-radius:999px;padding:6px 14px;margin-bottom:16px}

/* ============ 按钮 ============ */
.btn{
  display:inline-flex;align-items:center;justify-content:center;gap:8px;
  height:44px;padding:0 24px;border-radius:var(--r-btn);border:1px solid transparent;
  font-size:15px;font-weight:600;line-height:1;white-space:nowrap;
  transition:background-color 200ms var(--ease),color 200ms var(--ease),border-color 200ms var(--ease),transform 200ms var(--ease),box-shadow 200ms var(--ease);
}
.btn-primary{background:var(--c-primary);color:#fff;box-shadow:var(--sh-xs)}
.btn-primary:hover{background:var(--c-primary-600);transform:translateY(-1px);box-shadow:var(--sh-sm);color:#fff}
.btn-primary:active{transform:translateY(0)}
.btn-ghost{background:#fff;color:var(--c-primary);border-color:#D7E0EF}
.btn-ghost:hover{border-color:var(--c-primary);background:var(--c-primary-100);color:var(--c-primary-600);transform:translateY(-1px)}
.btn-link{background:none;border:0;padding:0;color:var(--c-primary);font-weight:600;height:auto}
.btn-link:hover{color:var(--c-primary-600);text-decoration:underline;text-underline-offset:3px}
.btn-block{width:100%}
.btn[disabled],.btn.is-disabled{background:#C9D3E3;color:#fff;cursor:not-allowed;border-color:transparent;transform:none;box-shadow:none}
.btn-header{height:40px;padding:0 20px;border-radius:999px}
.btn-onblue{background:#fff;color:var(--c-primary-600)}
.btn-onblue:hover{background:#EAF1FF;color:var(--c-primary-600);transform:translateY(-1px)}
.btn-outline-light{background:transparent;color:#fff;border-color:rgba(255,255,255,.55)}
.btn-outline-light:hover{background:rgba(255,255,255,.12);border-color:#fff;color:#fff;transform:translateY(-1px)}

/* ============ 徽章 / 标签 ============ */
.badge{display:inline-flex;align-items:center;gap:6px;font-size:12px;font-weight:600;line-height:1;padding:6px 12px;border-radius:999px;background:var(--c-primary-100);color:var(--c-primary)}
.badge-accent{background:var(--c-accent-100);color:#B4700F}

/* ============ 顶部导航 ============ */
.site-header{
  position:sticky;top:0;z-index:50;background:#fff;
  border-bottom:1px solid var(--c-line);
  transition:box-shadow 220ms var(--ease);
}
.site-header.is-scrolled{box-shadow:var(--sh-sm)}
.header-inner{display:flex;align-items:center;gap:24px;height:70px}
.brand{display:inline-flex;align-items:center;gap:10px;color:var(--c-ink);font-size:17px;font-weight:700;letter-spacing:.2px;white-space:nowrap}
.brand-mark{color:var(--c-primary);flex:0 0 auto}
.brand:hover{color:var(--c-primary)}
.nav-links{display:flex;align-items:center;gap:4px}
.nav-links a{
  display:inline-flex;align-items:center;height:38px;padding:0 14px;border-radius:999px;
  font-size:15px;color:var(--c-ink-2);font-weight:500;
}
.nav-links a:hover{color:var(--c-primary);background:var(--c-primary-100)}
.nav-links a.is-active{color:var(--c-primary);background:var(--c-primary-100);font-weight:600}
.header-actions{margin-left:auto;display:flex;align-items:center;gap:12px}
.search-form{position:relative;display:flex;align-items:center}
.search-form input{
  height:40px;width:220px;padding:0 40px 0 16px;border:1px solid #D7E0EF;border-radius:999px;
  background:#fff;font-size:14px;color:var(--c-ink);outline:none;
  transition:border-color 200ms var(--ease),box-shadow 200ms var(--ease);
}
.search-form input::placeholder{color:var(--c-muted)}
.search-form input:focus{border-color:var(--c-primary);box-shadow:0 0 0 3px rgba(29,91,214,.18)}
.search-form button{
  position:absolute;right:5px;width:30px;height:30px;border:0;border-radius:50%;
  background:transparent;color:var(--c-muted);display:grid;place-items:center;
}
.search-form button:hover{background:var(--c-primary-100);color:var(--c-primary)}
.menu-toggle{
  display:none;width:44px;height:44px;border:1px solid var(--c-line);border-radius:12px;
  background:#fff;color:var(--c-ink);align-items:center;justify-content:center;
}
.menu-toggle:hover{border-color:var(--c-primary);color:var(--c-primary);background:var(--c-primary-100)}

/* ============ 移动抽屉 ============ */
.drawer-mask{position:fixed;inset:0;background:rgba(15,27,45,.45);opacity:0;visibility:hidden;transition:opacity 220ms var(--ease),visibility 220ms var(--ease);z-index:55}
.drawer-mask.is-open{opacity:1;visibility:visible}
.drawer{
  position:fixed;top:0;right:0;height:100%;width:84%;max-width:360px;background:#fff;z-index:60;
  transform:translateX(100%);transition:transform 260ms var(--ease);
  padding:20px;overflow-y:auto;display:flex;flex-direction:column;gap:20px;box-shadow:var(--sh-lg);
}
.drawer.is-open{transform:translateX(0)}
.drawer-head{display:flex;align-items:center;justify-content:space-between;gap:12px}
.drawer-brand{display:inline-flex;align-items:center;gap:10px;font-size:16px;font-weight:700;color:var(--c-ink)}
.drawer-close{width:44px;height:44px;border:1px solid var(--c-line);border-radius:12px;background:#fff;color:var(--c-ink-2);display:grid;place-items:center}
.drawer-close:hover{border-color:var(--c-primary);color:var(--c-primary);background:var(--c-primary-100)}
.search-form--drawer input{width:100%}
.drawer-nav{display:flex;flex-direction:column;gap:4px}
.drawer-nav a{display:flex;align-items:center;height:46px;padding:0 14px;border-radius:12px;font-size:15px;color:var(--c-ink-2);font-weight:500}
.drawer-nav a:hover{background:var(--c-primary-100);color:var(--c-primary)}
.drawer-nav a.is-active{background:var(--c-primary-100);color:var(--c-primary);font-weight:600}
.drawer-foot{border-top:1px solid var(--c-line);padding-top:16px;font-size:13px;color:var(--c-muted)}
.drawer-foot p{margin:0 0 6px}

/* ============ 页头横幅 ============ */
.page-hero{
  background:linear-gradient(180deg,var(--c-primary-100) 0%,#FFFFFF 100%);
  padding:48px 0 56px;
  border-bottom:1px solid var(--c-line);
}
.page-hero-inner{display:grid;grid-template-columns:minmax(0,1fr) 340px;gap:48px;align-items:center;min-height:250px}
.breadcrumb{display:flex;align-items:center;gap:8px;font-size:14px;color:var(--c-muted);flex-wrap:wrap}
.breadcrumb a{color:var(--c-muted)}
.breadcrumb a:hover{color:var(--c-primary);text-decoration:underline;text-underline-offset:3px}
.breadcrumb .sep{color:#B9C4D6}
.breadcrumb .current{color:var(--c-ink)}
.page-hero h1{margin:16px 0 14px;font-size:40px;line-height:1.25;letter-spacing:.2px}
.page-lead{font-size:18px;line-height:1.8;color:var(--c-ink-2);max-width:640px;margin:0}
.page-hero-media img{width:100%;aspect-ratio:4/3;object-fit:cover;border-radius:var(--r-card);box-shadow:var(--sh-md);background:#EDF1F7}

/* ============ 分类切换 chips ============ */
.cat-switch{padding:24px 0 0}
.cat-chips{display:flex;gap:8px;flex-wrap:wrap}
.chip{
  display:inline-flex;align-items:center;gap:8px;height:42px;padding:0 18px;border-radius:999px;
  border:1px solid #D7E0EF;background:#fff;color:var(--c-ink-2);font-size:14px;font-weight:500;
  transition:all 200ms var(--ease);
}
.chip:hover{border-color:var(--c-primary);color:var(--c-primary);background:var(--c-primary-100)}
.chip.is-active{background:var(--c-primary);border-color:var(--c-primary);color:#fff;font-weight:600}
.chip svg{flex:0 0 auto}

/* ============ FAQ 双列主体 ============ */
.faq-layout{display:grid;grid-template-columns:minmax(0,7fr) minmax(0,5fr);gap:32px;align-items:start}
.faq-main h2{font-size:28px;margin-bottom:12px}
.faq-main .section-note{font-size:16px;color:var(--c-ink-2);margin-bottom:24px}
.faq-item{background:#fff;border:1px solid var(--c-line);border-radius:12px;margin-bottom:12px;overflow:hidden;transition:box-shadow 200ms var(--ease),border-color 200ms var(--ease)}
.faq-item:hover{box-shadow:var(--sh-sm);border-color:#D7E0EF}
.faq-item.is-open{border-color:#C9DBFF;box-shadow:var(--sh-sm)}
.faq-q{
  width:100%;display:flex;align-items:flex-start;justify-content:space-between;gap:16px;
  padding:20px 20px;background:none;border:0;text-align:left;
  font-size:16px;font-weight:600;color:var(--c-ink);line-height:1.6;
}
.faq-q:hover{color:var(--c-primary)}
.faq-icon{flex:0 0 22px;width:22px;height:22px;margin-top:2px;color:var(--c-primary);transition:transform 180ms var(--ease)}
.faq-item.is-open .faq-icon{transform:rotate(180deg)}
.faq-a{max-height:0;overflow:hidden;transition:max-height 260ms var(--ease)}
.faq-a-inner{padding:20px;background:#F8FAFD;border-top:1px solid var(--c-line);font-size:15px;line-height:1.8;color:var(--c-ink-2)}
.faq-a-inner p{margin:0 0 10px}
.faq-a-inner p:last-child{margin-bottom:0}

/* ============ 右侧栏 ============ */
.side-stack{display:flex;flex-direction:column;gap:16px;position:sticky;top:96px}
.side-title{font-size:13px;font-weight:600;color:var(--c-muted);letter-spacing:.6px;margin-bottom:12px}
.quick-card{
  background:#fff;border:1px solid var(--c-line);border-radius:var(--r-card);padding:22px;
  box-shadow:var(--sh-sm);display:block;transition:transform 200ms var(--ease),box-shadow 200ms var(--ease),border-color 200ms var(--ease);
}
.quick-card:hover{transform:translateY(-2px);box-shadow:var(--sh-md);border-color:#C9DBFF}
.quick-icon{width:42px;height:42px;border-radius:12px;background:var(--c-primary-100);color:var(--c-primary);display:grid;place-items:center;margin-bottom:14px}
.quick-card h3{font-size:18px;line-height:1.5;margin-bottom:8px;transition:color 200ms var(--ease)}
.quick-card:hover h3{color:var(--c-primary)}
.quick-card p{font-size:14px;color:var(--c-muted);line-height:1.7;margin:0}
.notice-panel{background:var(--c-primary-100);border-radius:var(--r-card);padding:22px;border:1px solid #D6E3FF}
.notice-panel .notice-head{display:flex;align-items:center;gap:10px;font-size:15px;font-weight:700;color:var(--c-primary-600);margin-bottom:10px}
.notice-panel p{font-size:14px;line-height:1.8;color:var(--c-ink-2);margin:0 0 14px}
.cat-mini{background:#fff;border:1px solid var(--c-line);border-radius:var(--r-card);padding:20px;box-shadow:var(--sh-xs)}
.cat-mini ul li + li{border-top:1px solid var(--c-line)}
.cat-mini a{display:flex;align-items:center;justify-content:space-between;gap:10px;padding:12px 0;font-size:14px;color:var(--c-ink-2);font-weight:500}
.cat-mini a:hover{color:var(--c-primary)}
.cat-mini a span.tag{font-size:12px;color:var(--c-muted)}
.cat-mini a.is-active{color:var(--c-primary);font-weight:600}

/* ============ 补充问答紧凑列表 ============ */
.mini-list{background:#fff;border:1px solid var(--c-line);border-radius:var(--r-panel);box-shadow:var(--sh-sm);overflow:hidden}
.mini-item{display:grid;grid-template-columns:64px minmax(0,1fr);gap:20px;padding:26px 28px;align-items:start}
.mini-item + .mini-item{border-top:1px solid var(--c-line)}
.mini-num{font-family:"Inter",system-ui,sans-serif;font-size:30px;font-weight:700;line-height:1;color:var(--c-accent);letter-spacing:-.5px;padding-top:2px}
.mini-item h3{font-size:18px;margin-bottom:8px}
.mini-item p{font-size:15px;color:var(--c-ink-2);line-height:1.8;margin:0}

/* ============ 提问表单 ============ */
.ask-grid{display:grid;grid-template-columns:minmax(0,5fr) minmax(0,7fr);gap:40px;align-items:start}
.ask-intro img{width:100%;aspect-ratio:16/10;object-fit:cover;border-radius:var(--r-card);box-shadow:var(--sh-sm);margin:24px 0;background:#EDF1F7}
.ask-points li{display:flex;gap:10px;font-size:15px;color:var(--c-ink-2);line-height:1.8;margin-bottom:10px}
.ask-points svg{flex:0 0 18px;margin-top:5px;color:var(--c-ok)}
.ask-card{background:#fff;border:1px solid var(--c-line);border-radius:var(--r-panel);padding:32px;box-shadow:var(--sh-md)}
.form-row{display:grid;grid-template-columns:1fr 1fr;gap:20px}
.field{margin-bottom:20px}
.field label{display:block;font-size:14px;font-weight:600;color:var(--c-ink);margin-bottom:8px}
.field input,.field textarea{
  width:100%;height:44px;padding:0 14px;border:1px solid #D7E0EF;border-radius:var(--r-btn);
  background:#fff;outline:none;transition:border-color 200ms var(--ease),box-shadow 200ms var(--ease);
}
.field textarea{height:auto;min-height:120px;padding:12px 14px;resize:vertical;line-height:1.75}
.field input:focus,.field textarea:focus{border-color:var(--c-primary);box-shadow:0 0 0 3px rgba(29,91,214,.18)}
.field-hint{font-size:13px;color:var(--c-muted);margin-top:6px}
.field-error{display:none;font-size:14px;color:var(--c-err);margin-top:6px}
.field.is-invalid input,.field.is-invalid textarea{border-color:var(--c-err);box-shadow:0 0 0 3px rgba(220,58,58,.12)}
.field.is-invalid .field-error{display:block}
.alert{display:none;align-items:flex-start;gap:10px;padding:12px 16px;border-radius:var(--r-btn);font-size:14px;line-height:1.7;margin-bottom:20px}
.alert.is-visible{display:flex}
.alert-success{background:rgba(18,161,80,.12);color:#0B7A3B;border-left:3px solid var(--c-ok)}

/* ============ CTA 面板 ============ */
.cta-band{
  background:var(--c-primary-600);border-radius:var(--r-panel);
  padding:48px 56px;display:grid;grid-template-columns:minmax(0,1fr) auto;gap:32px;align-items:center;
  box-shadow:var(--sh-md);
}
.cta-band h2{color:#fff;font-size:24px;line-height:1.4;margin-bottom:10px}
.cta-band p{color:rgba(255,255,255,.82);font-size:15px;line-height:1.8;margin:0;max-width:620px}
.cta-actions{display:flex;gap:12px;flex-wrap:wrap}
.cta-actions .btn{min-width:132px}

/* ============ 页脚 ============ */
.site-footer{background:var(--c-footer);color:rgba(255,255,255,.72);padding:64px 0 0;margin-top:80px}
.footer-grid{display:grid;grid-template-columns:1.7fr 1fr 1fr 1.2fr;gap:40px}
.footer-brand{display:flex;align-items:center;gap:10px;color:#fff;font-size:17px;font-weight:700}
.footer-brand svg{color:#7FA8F5}
.footer-about{margin-top:14px;font-size:14px;line-height:1.8;color:rgba(255,255,255,.72)}
.footer-social{display:flex;gap:10px;margin-top:18px}
.footer-social a{width:36px;height:36px;border-radius:10px;background:rgba(255,255,255,.08);display:grid;place-items:center;color:rgba(255,255,255,.8)}
.footer-social a:hover{background:rgba(255,255,255,.18);color:#fff}
.footer-col h4{font-size:14px;font-weight:600;color:rgba(255,255,255,.9);margin:0 0 16px}
.footer-col ul li a{font-size:14px;color:rgba(255,255,255,.72);line-height:2.2}
.footer-col ul li a:hover{color:#fff;text-decoration:underline;text-underline-offset:3px}
.footer-col ul li{font-size:14px;line-height:2.2;color:rgba(255,255,255,.72)}
.footer-bottom{
  margin-top:48px;padding:20px 0;border-top:1px solid rgba(255,255,255,.12);
  display:flex;justify-content:space-between;gap:12px;flex-wrap:wrap;font-size:13px;color:rgba(255,255,255,.6);
}

/* ============ 响应式 ============ */
@media (max-width:1279px){
  .side-stack{position:static}
}
@media (max-width:1023px){
  .nav-links{display:none}
  .header-actions .search-form{display:none}
  .menu-toggle{display:inline-flex}
  .section{padding:64px 0}
  .page-hero-inner{grid-template-columns:minmax(0,1fr);gap:24px;min-height:0}
  .page-hero-media{display:none}
  .page-hero{padding:36px 0 40px}
  .page-hero h1{font-size:32px}
  .faq-layout{grid-template-columns:minmax(0,1fr);gap:28px}
  .ask-grid{grid-template-columns:minmax(0,1fr);gap:28px}
  .cta-band{grid-template-columns:minmax(0,1fr);padding:40px}
  .footer-grid{grid-template-columns:1fr 1fr;gap:32px}
}
@media (max-width:767px){
  .container{padding:0 16px}
  .section{padding:48px 0}
  .page-hero h1{font-size:28px;line-height:1.3}
  .page-lead{font-size:17px}
  .section-head h2,.faq-main h2{font-size:22px}
  .form-row{grid-template-columns:1fr;gap:0}
  .ask-card{padding:22px}
  .mini-item{grid-template-columns:44px minmax(0,1fr);gap:14px;padding:22px 18px}
  .mini-num{font-size:24px}
  .cta-band{padding:32px 24px;border-radius:16px}
  .footer-grid{grid-template-columns:1fr;gap:28px}
  .site-footer{padding:44px 0 0;margin-top:56px}
  .brand{font-size:15px}
  .brand-mark{width:24px;height:24px}
}
@media (max-width:479px){
  .brand-text{white-space:normal}
  .btn-header{padding:0 14px;font-size:14px}
  .chip{height:40px;padding:0 14px;font-size:13px}
  .footer-bottom{flex-direction:column;gap:6px}
}

/* roulang page: category2 */
:root{
  --c-primary:#1D5BD6;
  --c-primary-600:#164BB0;
  --c-primary-100:#EAF1FF;
  --c-accent:#E9963F;
  --c-accent-100:#FDF3E4;
  --c-ink:#0F1B2D;
  --c-ink-2:#3C4A62;
  --c-muted:#6B7A90;
  --c-line:#E4E9F2;
  --c-bg:#F6F8FB;
  --c-surface:#FFFFFF;
  --c-footer:#0F2440;
  --c-success:#12A150;
  --c-error:#DC3A3A;
  --r-sm:8px;
  --r-md:10px;
  --r-lg:16px;
  --r-xl:20px;
  --sh-xs:0 1px 2px rgba(15,27,45,.04);
  --sh-sm:0 2px 8px rgba(15,27,45,.06);
  --sh-md:0 8px 24px rgba(15,27,45,.08);
  --sh-lg:0 18px 48px rgba(15,27,45,.10);
  --tr:200ms cubic-bezier(.2,.7,.3,1);
  --font:"Inter",-apple-system,"PingFang SC","HarmonyOS Sans SC","Microsoft YaHei","Source Han Sans SC",system-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:1.85;
  color:var(--c-ink-2);
  background:var(--c-bg);
  -webkit-font-smoothing:antialiased;
}
img{max-width:100%;display:block;background:#EDF1F7}
a{color:inherit;text-decoration:none}
button,input{font: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}
svg{flex:none}
::selection{background:rgba(29,91,214,.18)}
::-webkit-scrollbar{width:8px;height:8px}
::-webkit-scrollbar-thumb{background:#C7D2E3;border-radius:8px}
::-webkit-scrollbar-track{background:transparent}
:focus-visible{outline:2px solid var(--c-primary);outline-offset:2px;box-shadow:0 0 0 3px rgba(29,91,214,.18)}
.container{width:100%;max-width:1200px;margin:0 auto;padding:0 24px}
.link{color:var(--c-primary);text-decoration:underline;text-underline-offset:3px;transition:color var(--tr)}
.link:hover{color:var(--c-primary-600)}

/* ---------- header ---------- */
.site-header{
  position:sticky;top:0;z-index:50;
  background:#fff;
  border-bottom:1px solid var(--c-line);
  transition:box-shadow var(--tr);
}
.site-header.is-scrolled{box-shadow:var(--sh-sm)}
.header-inner{display:flex;align-items:center;gap:24px;min-height:72px}
.brand{display:flex;align-items:center;gap:10px;color:var(--c-primary);flex:none}
.brand-name{font-size:17px;font-weight:700;color:var(--c-ink);letter-spacing:.2px;white-space:nowrap}
.main-nav{margin-left:8px;flex:1;min-width:0}
.nav-list{display:flex;align-items:center;gap:4px}
.nav-list a{
  display:inline-flex;align-items:center;height:38px;padding:0 14px;
  border-radius:999px;font-size:15px;color:var(--c-ink-2);
  transition:color var(--tr),background var(--tr);
}
.nav-list a:hover{color:var(--c-primary);background:var(--c-primary-100)}
.nav-list a.is-active{color:var(--c-primary);background:var(--c-primary-100);font-weight:600}
.header-actions{display:flex;align-items:center;gap:12px;flex:none}
.search-box{
  display:flex;align-items:center;gap:8px;
  width:220px;height:40px;padding:0 14px;
  border:1px solid #D7E0EF;border-radius:999px;background:#FBFCFE;
  color:var(--c-muted);
  transition:border-color var(--tr),box-shadow var(--tr),background var(--tr);
}
.search-box:focus-within{border-color:var(--c-primary);background:#fff;box-shadow:0 0 0 3px rgba(29,91,214,.14)}
.search-box input{border:0;outline:0;background:transparent;width:100%;font-size:14px;color:var(--c-ink)}
.search-box input::placeholder{color:#9AA8BC}
.btn{
  display:inline-flex;align-items:center;justify-content:center;gap:8px;
  height:44px;padding:0 24px;border-radius:var(--r-md);
  font-size:15px;font-weight:600;line-height:1;white-space:nowrap;
  transition:background var(--tr),color var(--tr),border-color var(--tr),transform var(--tr),box-shadow var(--tr);
}
.btn:active{transform:none}
.btn-primary{background:var(--c-primary);color:#fff;box-shadow:var(--sh-xs)}
.btn-primary:hover{background:var(--c-primary-600);transform:translateY(-1px);box-shadow:var(--sh-sm)}
.btn-outline{background:#fff;color:var(--c-primary);border:1px solid #D7E0EF}
.btn-outline:hover{border-color:var(--c-primary);background:var(--c-primary-100)}
.btn-pill{border-radius:999px}
.header-cta{height:40px;padding:0 20px}
.menu-toggle{
  display:none;align-items:center;justify-content:center;
  width:44px;height:44px;border-radius:var(--r-md);color:var(--c-ink);
  border:1px solid var(--c-line);background:#fff;
}
.menu-toggle:hover{background:var(--c-primary-100);color:var(--c-primary)}

/* ---------- drawer ---------- */
.drawer-mask{
  position:fixed;inset:0;background:rgba(15,27,45,.45);
  opacity:0;visibility:hidden;transition:opacity var(--tr),visibility var(--tr);z-index:60;
}
.drawer-mask.is-open{opacity:1;visibility:visible}
.drawer{
  position:fixed;top:0;right:0;bottom:0;width:84%;max-width:360px;
  background:#fff;z-index:61;transform:translateX(102%);
  transition:transform 260ms cubic-bezier(.2,.7,.3,1);
  display:flex;flex-direction:column;overflow-y:auto;
}
.drawer.is-open{transform:translateX(0)}
.drawer-head{display:flex;align-items:center;justify-content:space-between;gap:12px;padding:16px 20px;border-bottom:1px solid var(--c-line)}
.drawer-brand{display:flex;align-items:center;gap:10px;color:var(--c-primary);font-weight:700;color:var(--c-ink);font-size:16px}
.drawer-close{
  width:44px;height:44px;display:flex;align-items:center;justify-content:center;
  border-radius:var(--r-md);color:var(--c-ink-2);border:1px solid var(--c-line);
}
.drawer-close:hover{background:var(--c-primary-100);color:var(--c-primary)}
.drawer-body{padding:20px}
.drawer-nav{display:flex;flex-direction:column;gap:4px;margin-bottom:20px}
.drawer-nav a{padding:12px 14px;border-radius:var(--r-md);font-size:15px;color:var(--c-ink-2)}
.drawer-nav a:hover{background:var(--c-primary-100);color:var(--c-primary)}
.drawer-nav a.is-active{background:var(--c-primary-100);color:var(--c-primary);font-weight:600}
.drawer .search-box{width:100%;margin-bottom:16px}
.drawer .btn{width:100%}
.drawer-foot{margin-top:24px;padding-top:16px;border-top:1px solid var(--c-line);font-size:13px;color:var(--c-muted);line-height:1.9}

/* ---------- page hero ---------- */
.page-hero{
  background:linear-gradient(180deg,var(--c-primary-100) 0%,#FFFFFF 100%);
  border-bottom:1px solid var(--c-line);
}
.page-hero-inner{
  display:grid;grid-template-columns:minmax(0,1fr) 320px;gap:48px;align-items:center;
  padding-top:48px;padding-bottom:48px;min-height:280px;
}
.breadcrumb{display:flex;flex-wrap:wrap;align-items:center;gap:8px;font-size:14px;color:var(--c-muted);margin-bottom:16px}
.breadcrumb a{color:var(--c-muted);transition:color var(--tr)}
.breadcrumb a:hover{color:var(--c-primary)}
.breadcrumb .sep{color:#B9C5D6}
.breadcrumb .current{color:var(--c-ink)}
.page-hero h1{
  font-size:40px;line-height:1.25;font-weight:700;color:var(--c-ink);
  letter-spacing:-.4px;margin-bottom:14px;
}
.page-hero-lead{font-size:18px;line-height:1.8;color:var(--c-ink-2);max-width:640px}
.page-hero-media{border-radius:var(--r-lg);overflow:hidden;box-shadow:var(--sh-md);border:1px solid rgba(29,91,214,.08)}
.page-hero-media img{width:100%;height:210px;object-fit:cover;transition:transform 400ms cubic-bezier(.2,.7,.3,1)}
.page-hero-media:hover img{transform:scale(1.03)}

/* ---------- mobile cats ---------- */
.mobile-cats{display:none;gap:8px;overflow-x:auto;padding:16px 0 0;scrollbar-width:none}
.mobile-cats::-webkit-scrollbar{display:none}
.mobile-cats a{
  flex:none;padding:8px 16px;border-radius:999px;font-size:14px;
  background:#fff;border:1px solid var(--c-line);color:var(--c-ink-2);white-space:nowrap;
}
.mobile-cats a.is-active{background:var(--c-primary);border-color:var(--c-primary);color:#fff;font-weight:600}

/* ---------- layout ---------- */
.section{padding:80px 0}
.layout{display:grid;grid-template-columns:260px minmax(0,1fr);gap:40px;align-items:start}
.side-nav{
  position:sticky;top:96px;
  background:var(--c-surface);border:1px solid var(--c-line);border-radius:var(--r-lg);
  padding:20px;box-shadow:var(--sh-xs);
}
.side-nav-title{font-size:14px;font-weight:600;color:var(--c-ink);margin-bottom:12px;letter-spacing:.2px}
.side-nav-list{display:flex;flex-direction:column;gap:4px;margin-bottom:20px}
.side-nav-list a{
  display:block;padding:10px 14px;border-radius:999px;font-size:14.5px;color:var(--c-ink-2);
  transition:background var(--tr),color var(--tr),transform var(--tr);
}
.side-nav-list a:hover{background:var(--c-primary-100);color:var(--c-primary);transform:translateX(2px)}
.side-nav-list a.is-active{background:var(--c-primary);color:#fff;font-weight:600}
.side-nav-list a.is-active:hover{background:var(--c-primary-600);color:#fff}
.side-nav-sub{display:flex;flex-direction:column;gap:6px;padding-top:16px;border-top:1px solid var(--c-line)}
.side-nav-sub a{font-size:13.5px;color:var(--c-muted);padding:4px 0;transition:color var(--tr)}
.side-nav-sub a:hover{color:var(--c-primary)}

/* ---------- chips ---------- */
.chips{display:flex;flex-wrap:wrap;gap:10px;margin-bottom:32px}
.chip{
  display:inline-flex;align-items:center;gap:8px;
  padding:9px 18px;border-radius:999px;font-size:14px;
  background:#fff;border:1px solid var(--c-line);color:var(--c-ink-2);
  transition:border-color var(--tr),color var(--tr),background var(--tr),transform var(--tr);
}
.chip:hover{border-color:var(--c-primary);color:var(--c-primary);background:var(--c-primary-100);transform:translateY(-1px)}
.chip .dot{width:6px;height:6px;border-radius:50%;background:var(--c-accent)}

/* ---------- group ---------- */
.group{margin-bottom:64px;scroll-margin-top:96px}
.group:last-of-type{margin-bottom:32px}
.group-head{margin-bottom:24px;padding-bottom:16px;border-bottom:1px solid var(--c-line)}
.group-title{font-size:28px;line-height:1.35;font-weight:700;color:var(--c-ink);display:flex;align-items:center;gap:12px}
.group-title .idx{
  display:inline-flex;align-items:center;justify-content:center;
  width:34px;height:34px;border-radius:10px;flex:none;
  background:var(--c-accent-100);color:#B4700F;font-size:14px;font-weight:700;font-family:"Inter",system-ui;
}
.group-desc{margin-top:10px;font-size:15px;color:var(--c-muted)}
.card-grid{display:grid;grid-template-columns:repeat(2,minmax(0,1fr));gap:24px}
.tcard{
  display:flex;flex-direction:column;
  background:var(--c-surface);border:1px solid var(--c-line);border-radius:var(--r-lg);
  overflow:hidden;box-shadow:var(--sh-xs);
  transition:transform var(--tr),box-shadow var(--tr),border-color var(--tr);
}
.tcard:hover{transform:translateY(-2px);box-shadow:var(--sh-md);border-color:#D6E1F5}
.tcard-media{overflow:hidden;aspect-ratio:16/10;background:#EDF1F7}
.tcard-media img{width:100%;height:100%;object-fit:cover;transition:transform 400ms cubic-bezier(.2,.7,.3,1)}
.tcard:hover .tcard-media img{transform:scale(1.03)}
.tcard-body{padding:22px;display:flex;flex-direction:column;gap:10px;flex:1}
.card-tag{
  align-self:flex-start;padding:4px 12px;border-radius:999px;
  background:var(--c-primary-100);color:var(--c-primary);font-size:12px;font-weight:600;letter-spacing:.2px;
}
.card-tag.accent{background:var(--c-accent-100);color:#B4700F}
.card-title{font-size:20px;line-height:1.5;font-weight:600;color:var(--c-ink);transition:color var(--tr)}
.tcard:hover .card-title{color:var(--c-primary)}
.card-text{
  font-size:14.5px;line-height:1.75;color:var(--c-ink-2);
  display:-webkit-box;-webkit-line-clamp:2;-webkit-box-orient:vertical;overflow:hidden;
}
.meta{display:flex;flex-wrap:wrap;align-items:center;gap:14px;font-size:13px;color:var(--c-muted);margin-top:auto;padding-top:12px;border-top:1px dashed var(--c-line)}
.meta span{display:inline-flex;align-items:center;gap:5px}

/* ---------- note ---------- */
.note-panel{
  display:flex;gap:16px;align-items:flex-start;
  background:var(--c-primary-100);border:1px solid #D8E5FF;border-radius:var(--r-lg);
  padding:24px;color:var(--c-ink-2);
}
.note-panel .note-ico{color:var(--c-primary)}
.note-panel h3{font-size:17px;font-weight:600;color:var(--c-ink);margin-bottom:6px}
.note-panel p{font-size:14.5px;line-height:1.8}

/* ---------- cta band ---------- */
.cta-band{padding:0 0 88px}
.cta-panel{
  display:flex;align-items:center;justify-content:space-between;gap:40px;
  background:var(--c-primary-600);border-radius:var(--r-xl);
  padding:52px;color:#fff;box-shadow:var(--sh-md);
}
.cta-text h2{font-size:26px;line-height:1.4;font-weight:700;margin-bottom:10px}
.cta-text p{font-size:15px;line-height:1.8;color:rgba(255,255,255,.82);max-width:560px}
.cta-actions{display:flex;gap:12px;flex:none}
.btn-light{background:#fff;color:var(--c-primary-600)}
.btn-light:hover{background:#EAF1FF;transform:translateY(-1px);box-shadow:var(--sh-sm)}
.btn-ghost-light{background:transparent;color:#fff;border:1px solid rgba(255,255,255,.55)}
.btn-ghost-light:hover{background:rgba(255,255,255,.14);border-color:#fff;transform:translateY(-1px)}

/* ---------- footer ---------- */
.site-footer{background:var(--c-footer);color:rgba(255,255,255,.72);padding:64px 0 0;margin-top:0}
.footer-grid{display:grid;grid-template-columns:1.6fr 1fr 1fr 1.2fr;gap:40px}
.footer-brand{display:flex;align-items:center;gap:10px;color:#fff;font-size:16px;font-weight:700;margin-bottom:14px}
.footer-about{font-size:14px;line-height:1.9;color:rgba(255,255,255,.72);max-width:320px}
.footer-social{display:flex;gap:10px;margin-top:18px}
.footer-social a{
  display:flex;align-items:center;justify-content:center;width:36px;height:36px;
  border-radius:10px;border:1px solid rgba(255,255,255,.18);color:rgba(255,255,255,.8);
  transition:background var(--tr),color var(--tr),border-color var(--tr);
}
.footer-social a:hover{background:rgba(255,255,255,.12);color:#fff;border-color:rgba(255,255,255,.4)}
.footer-col h4{font-size:14px;font-weight:600;color:rgba(255,255,255,.92);margin-bottom:16px}
.footer-col ul{display:flex;flex-direction:column;gap:10px}
.footer-col li,.footer-col a{font-size:14px;color:rgba(255,255,255,.72);line-height:1.7}
.footer-col a{transition:color var(--tr)}
.footer-col a:hover{color:#fff;text-decoration:underline;text-underline-offset:3px}
.footer-bottom{
  margin-top:48px;padding:20px 0;border-top:1px solid rgba(255,255,255,.12);
  display:flex;justify-content:space-between;flex-wrap:wrap;gap:10px;font-size:13px;color:rgba(255,255,255,.6);
}

/* ---------- responsive ---------- */
@media (max-width:1279px){
  .layout{grid-template-columns:240px minmax(0,1fr);gap:32px}
}
@media (max-width:1023px){
  .main-nav{display:none}
  .search-box{display:none}
  .menu-toggle{display:flex}
  .header-inner{justify-content:space-between;gap:16px}
  .header-actions{margin-left:auto}
  .layout{grid-template-columns:minmax(0,1fr)}
  .side-nav{display:none}
  .mobile-cats{display:flex}
  .page-hero-inner{grid-template-columns:minmax(0,1fr);gap:32px;padding-top:36px;padding-bottom:36px}
  .page-hero-media{display:none}
  .page-hero h1{font-size:32px}
  .section{padding:64px 0}
  .cta-band{padding-bottom:64px}
  .cta-panel{flex-direction:column;align-items:flex-start;gap:24px;padding:40px}
  .cta-actions{width:100%;flex-wrap:wrap}
  .footer-grid{grid-template-columns:repeat(2,minmax(0,1fr));gap:32px}
}
@media (max-width:767px){
  .container{padding:0 16px}
  .brand-name{font-size:15px}
  .card-grid{grid-template-columns:minmax(0,1fr);gap:16px}
  .page-hero h1{font-size:28px}
  .page-hero-lead{font-size:16.5px}
  .group-title{font-size:22px}
  .group{margin-bottom:48px}
  .section{padding:48px 0}
  .cta-panel{padding:32px 24px;border-radius:var(--r-lg)}
  .cta-text h2{font-size:21px}
  .cta-actions .btn{flex:1;min-width:140px}
  .footer-grid{grid-template-columns:minmax(0,1fr);gap:28px}
  .footer-bottom{flex-direction:column}
  .site-footer{padding-top:40px}
}
@media (max-width:479px){
  .page-hero h1{font-size:26px}
  .page-hero-lead{font-size:15.5px}
  .card-title{font-size:18px}
  .side-nav{padding:16px}
}