/* roulang page: index */
:root{
  --c-primary:#2456F0;
  --c-primary-dark:#1D45C9;
  --c-primary-soft:#EAF0FF;
  --c-cyan:#12C8C8;
  --c-accent:#FF6A1F;
  --c-accent-soft:#FFF1E8;
  --c-ink:#0E1726;
  --c-text2:#3C4A5F;
  --c-muted:#7A8798;
  --c-line:#E4EAF3;
  --c-bg:#F5F7FB;
  --c-surface:#FFFFFF;
  --r-sm:8px;
  --r-md:12px;
  --r-card:16px;
  --r-lg:24px;
  --r-pill:999px;
  --sh-1:0 1px 2px rgba(16,32,64,.06);
  --sh-2:0 8px 24px -8px rgba(23,52,120,.14);
  --sh-3:0 16px 40px -12px rgba(23,52,120,.18);
}
*,*::before,*::after{box-sizing:border-box;}
html{scroll-behavior:smooth;}
body{
  margin:0;
  background:var(--c-bg);
  color:var(--c-ink);
  font-size:16px;
  line-height:1.85;
  -webkit-font-smoothing:antialiased;
  text-rendering:optimizeLegibility;
}
img{display:block;max-width:100%;height:auto;}
a{color:inherit;text-decoration:none;}
button,input,select,textarea{font:inherit;color:inherit;}
ul,ol{margin:0;padding:0;}
:focus-visible{outline:2px solid rgba(36,86,240,.45);outline-offset:2px;}

.container-x{width:100%;max-width:1200px;margin:0 auto;padding:0 32px;}

/* 顶部导航 */
.site-header{
  position:sticky;top:0;z-index:50;
  background:rgba(255,255,255,.92);
  backdrop-filter:blur(12px);
  -webkit-backdrop-filter:blur(12px);
  border-bottom:1px solid var(--c-line);
}
.nav-wrap{display:flex;align-items:center;gap:20px;height:64px;}
.brand{display:flex;align-items:center;gap:10px;flex:none;}
.brand-mark{
  width:30px;height:30px;border-radius:var(--r-sm);
  border:2px solid var(--c-primary);
  background:var(--c-primary-soft);
  display:flex;align-items:center;justify-content:center;
}
.brand-mark i{display:block;width:9px;height:9px;border-radius:50%;background:var(--c-primary);}
.brand-name{font-size:18px;font-weight:700;line-height:1;letter-spacing:0;}
.main-nav{display:flex;align-items:center;gap:2px;margin-right:auto;}
.nav-link{
  position:relative;padding:8px 12px;font-size:15px;font-weight:500;
  color:var(--c-text2);border-radius:var(--r-sm);
  transition:color .18s ease-out,background-color .18s ease-out;
  white-space:nowrap;
}
.nav-link:hover{color:var(--c-primary-dark);background:var(--c-primary-soft);}
.nav-link.is-active{color:var(--c-primary);}
.nav-link.is-active::after{
  content:"";position:absolute;left:12px;right:12px;bottom:-1px;
  height:2px;background:var(--c-primary);border-radius:2px;
}
.nav-right{display:flex;align-items:center;gap:12px;flex:none;}
.search-box{
  display:flex;align-items:center;gap:8px;width:240px;height:40px;
  padding:0 10px 0 12px;background:#F5F7FB;border:1px solid transparent;
  border-radius:var(--r-md);
  transition:background-color .18s ease-out,border-color .18s ease-out,box-shadow .18s ease-out;
}
.search-box:focus-within{background:#fff;border-color:var(--c-primary);box-shadow:0 0 0 4px rgba(36,86,240,.08);}
.search-box svg{flex:none;color:var(--c-muted);}
.search-box input{flex:1;min-width:0;border:0;background:transparent;outline:none;font-size:14px;}
.search-box input::placeholder{color:var(--c-muted);}
.kbd{
  flex:none;font-size:11px;color:var(--c-muted);border:1px solid var(--c-line);
  border-radius:6px;padding:1px 6px;background:#fff;line-height:1.5;
}
.nav-text-link{
  font-size:14px;color:var(--c-text2);padding:6px 4px;white-space:nowrap;
  transition:color .18s ease-out;
}
.nav-text-link:hover{color:var(--c-primary);text-decoration:underline;text-underline-offset:4px;}
.menu-btn{
  display:none;width:40px;height:40px;border-radius:var(--r-md);
  border:1px solid var(--c-line);background:#fff;cursor:pointer;
  align-items:center;justify-content:center;
}
.menu-btn span{display:block;width:16px;height:2px;background:var(--c-ink);border-radius:2px;position:relative;}
.menu-btn span::before,.menu-btn span::after{
  content:"";position:absolute;left:0;width:16px;height:2px;background:var(--c-ink);border-radius:2px;
}
.menu-btn span::before{top:-5px;}
.menu-btn span::after{top:5px;}

/* 抽屉 */
.drawer-mask{
  position:fixed;inset:0;background:rgba(14,23,38,.45);z-index:60;
  opacity:0;visibility:hidden;transition:opacity .25s ease-out,visibility .25s;
}
.drawer-mask.is-open{opacity:1;visibility:visible;}
.drawer{
  position:fixed;top:0;right:0;height:100%;width:min(84vw,340px);
  background:#fff;z-index:70;padding:20px;overflow-y:auto;
  transform:translateX(100%);
  transition:transform .28s ease-out;
  box-shadow:var(--sh-3);
}
.drawer.is-open{transform:none;}
.drawer-head{display:flex;align-items:center;justify-content:space-between;margin-bottom:20px;}
.drawer-close{
  width:36px;height:36px;border-radius:var(--r-md);border:1px solid var(--c-line);
  background:#fff;cursor:pointer;font-size:18px;line-height:1;color:var(--c-text2);
}
.drawer-nav{display:grid;gap:4px;margin-bottom:20px;}
.drawer-nav a{
  padding:12px 14px;border-radius:var(--r-md);font-size:15px;font-weight:500;color:var(--c-text2);
  transition:background-color .18s ease-out,color .18s ease-out;
}
.drawer-nav a:hover,.drawer-nav a.is-active{background:var(--c-primary-soft);color:var(--c-primary-dark);}
.drawer .search-box{width:100%;margin-bottom:16px;}
.drawer .btn{width:100%;}

/* 按钮 */
.btn{
  display:inline-flex;align-items:center;justify-content:center;gap:8px;
  height:48px;padding:0 24px;border-radius:var(--r-md);
  border:1px solid transparent;font-size:15px;font-weight:600;
  cursor:pointer;white-space:nowrap;
  transition:transform .18s ease-out,background-color .18s ease-out,border-color .18s ease-out,box-shadow .18s ease-out,color .18s ease-out;
}
.btn svg{flex:none;}
.btn-primary{background:var(--c-primary);color:#fff;box-shadow:var(--sh-1);}
.btn-primary:hover{background:var(--c-primary-dark);transform:translateY(-1px);box-shadow:var(--sh-2);}
.btn-primary:active{transform:none;}
.btn-accent{background:var(--c-accent);color:#fff;box-shadow:var(--sh-1);}
.btn-accent:hover{background:#E85C13;transform:translateY(-1px);box-shadow:var(--sh-2);}
.btn-accent:active{transform:none;}
.btn-ghost{background:#fff;border-color:var(--c-line);color:var(--c-ink);}
.btn-ghost:hover{border-color:var(--c-primary);color:var(--c-primary-dark);transform:translateY(-1px);box-shadow:var(--sh-1);}
.btn-ghost:active{transform:none;}
.btn-sm{height:40px;padding:0 16px;font-size:14px;border-radius:var(--r-md);}
.btn-full{width:100%;}
.btn-text{
  display:inline-flex;align-items:center;gap:6px;color:var(--c-primary);
  font-size:15px;font-weight:600;transition:color .18s ease-out;
}
.btn-text svg{transition:transform .18s ease-out;}
.btn-text:hover{color:var(--c-primary-dark);text-decoration:underline;text-underline-offset:4px;}
.btn-text:hover svg{transform:translateX(2px);}

/* 徽章 */
.badge{
  display:inline-flex;align-items:center;gap:6px;height:24px;padding:0 10px;
  border-radius:var(--r-pill);font-size:12px;font-weight:600;line-height:1;white-space:nowrap;
}
.badge-soft{background:var(--c-primary-soft);color:var(--c-primary-dark);}
.badge-accent{background:var(--c-accent-soft);color:#C24A0E;}
.badge-cyan{background:#E4FAFA;color:#0A8F8F;}
.badge .dot{width:6px;height:6px;border-radius:50%;background:var(--c-accent);animation:pulse 1.8s infinite;}
@keyframes pulse{0%,100%{opacity:1;transform:scale(1);}50%{opacity:.35;transform:scale(.75);}}

/* 倒计时条 */
.countdown{background:linear-gradient(90deg,#FF6A1F,#FF8A3D);color:#fff;font-size:14px;}
.countdown-inner{display:flex;align-items:center;gap:14px;height:44px;}
.cd-label{white-space:nowrap;}
.cd-units{display:flex;align-items:center;gap:6px;margin:0 auto;}
.cd-unit{
  width:32px;height:32px;border-radius:var(--r-sm);background:rgba(255,255,255,.22);
  display:flex;align-items:center;justify-content:center;
  font-weight:700;font-variant-numeric:tabular-nums;font-size:14px;
}
.cd-sep{font-size:12px;opacity:.9;}
.cd-link{color:#fff;text-decoration:underline;text-underline-offset:3px;white-space:nowrap;transition:opacity .18s ease-out;}
.cd-link:hover{opacity:.85;}

/* 排版 */
.h1{font-size:clamp(30px,4.4vw,48px);font-weight:700;line-height:1.22;letter-spacing:0;margin:0;}
.h2{font-size:clamp(24px,2.6vw,32px);font-weight:700;line-height:1.3;letter-spacing:0;margin:0;}
.h3{font-size:20px;font-weight:600;line-height:1.5;margin:0;}
.lead{font-size:17px;line-height:1.75;color:var(--c-text2);margin:0;}
.body-text{font-size:16px;line-height:1.85;color:var(--c-text2);margin:0;}
.small-text{font-size:14px;line-height:1.7;color:var(--c-muted);margin:0;}
.eyebrow{
  display:inline-flex;align-items:center;gap:8px;
  font-size:13px;font-weight:600;color:var(--c-primary);margin-bottom:14px;
}
.eyebrow::before{content:"";width:2px;height:14px;background:var(--c-primary);border-radius:2px;}

/* 板块 */
.section{padding:96px 0;}
.section-alt{background:var(--c-surface);}
.section-head{
  display:flex;align-items:flex-end;justify-content:space-between;gap:24px;flex-wrap:wrap;
}

/* Hero */
.hero{
  position:relative;overflow:hidden;padding:64px 0 80px;
  background:linear-gradient(#F5F7FB,#F5F7FB);
}
.hero::before{
  content:"";position:absolute;inset:0;pointer-events:none;
  background-image:
    radial-gradient(900px 320px at 50% -6%, rgba(36,86,240,.06), rgba(36,86,240,0) 70%),
    linear-gradient(rgba(36,86,240,.05) 1px, rgba(0,0,0,0) 1px),
    linear-gradient(90deg, rgba(36,86,240,.05) 1px, rgba(0,0,0,0) 1px);
  background-size:auto,48px 48px,48px 48px;
  -webkit-mask-image:linear-gradient(#000, rgba(0,0,0,0) 78%);
  mask-image:linear-gradient(#000, rgba(0,0,0,0) 78%);
}
.hero-grid{
  position:relative;display:grid;grid-template-columns:7fr 5fr;
  gap:48px;align-items:center;min-height:560px;
}
.hero-copy{display:flex;flex-direction:column;align-items:flex-start;gap:20px;}
.hero-actions{display:flex;gap:12px;flex-wrap:wrap;}
.trust{
  list-style:none;display:flex;gap:28px;width:100%;flex-wrap:wrap;
  margin-top:8px;padding-top:24px;border-top:1px solid var(--c-line);
}
.trust li{display:flex;flex-direction:column;gap:2px;}
.trust strong{
  font-size:24px;line-height:1.2;color:var(--c-primary);
  font-variant-numeric:tabular-nums;font-weight:700;
}
.trust span{font-size:13px;color:var(--c-muted);}
.hero-visual{position:relative;}
.hero-visual > img{
  width:100%;aspect-ratio:16/13;object-fit:cover;
  border-radius:var(--r-lg);box-shadow:var(--sh-2);
}
.float-card{
  position:absolute;background:#fff;border:1px solid var(--c-line);
  border-radius:var(--r-md);box-shadow:var(--sh-2);
  padding:12px 14px;font-size:13px;color:var(--c-text2);line-height:1.6;
}
.float-card strong{
  display:block;font-size:16px;color:var(--c-ink);
  font-variant-numeric:tabular-nums;font-weight:700;
}
.float-card-a{left:-20px;bottom:28px;}
.float-card-b{right:-14px;top:26px;}

/* 活动卖点 */
.points-layout{display:grid;grid-template-columns:5fr 7fr;gap:56px;align-items:start;}
.points-intro{position:sticky;top:96px;display:flex;flex-direction:column;align-items:flex-start;gap:16px;}
.points-list{display:grid;grid-template-columns:repeat(2,1fr);gap:0 40px;}
.point-item{display:flex;gap:14px;padding:22px 0;border-top:1px solid var(--c-line);}
.point-no{
  flex:none;font-size:14px;font-weight:700;color:var(--c-primary);
  font-variant-numeric:tabular-nums;padding-top:3px;letter-spacing:.02em;
}
.point-item p{margin:6px 0 0;font-size:15px;line-height:1.8;color:var(--c-text2);}

/* 图墙 */
.gallery-grid{
  display:grid;grid-template-columns:repeat(4,1fr);
  grid-auto-rows:180px;gap:16px;margin-top:32px;
}
.gallery-item{
  position:relative;display:block;overflow:hidden;
  border-radius:var(--r-card);background:#E9EEF7;
}
.gallery-large{grid-column:span 2;grid-row:span 2;}
.gallery-item img{width:100%;height:100%;object-fit:cover;transition:transform .4s ease-out;}
.gallery-item:hover img{transform:scale(1.03);}
.gallery-cap{
  position:absolute;left:0;right:0;bottom:0;padding:28px 16px 12px;
  font-size:14px;color:#fff;line-height:1.5;
  background:linear-gradient(to top, rgba(14,23,38,.78), rgba(14,23,38,0));
  opacity:0;transition:opacity .25s ease-out;
}
.gallery-item:hover .gallery-cap,.gallery-item:focus-visible .gallery-cap{opacity:1;}

/* 数据条 */
.stat-strip{
  background:var(--c-primary-soft);border-radius:var(--r-lg);
  padding:32px;display:grid;grid-template-columns:repeat(4,1fr);gap:24px;
}
.stat-item{display:flex;flex-direction:column;gap:4px;}
.stat-num{
  font-size:28px;font-weight:700;line-height:1.2;color:var(--c-primary);
  font-variant-numeric:tabular-nums;
}
.stat-label{font-size:13px;color:var(--c-text2);}

/* 报名表单 */
.cta-block{
  background:var(--c-primary-soft);border-radius:var(--r-lg);
  padding:48px;display:grid;grid-template-columns:1fr 1fr;gap:48px;align-items:start;
}
.check-list{list-style:none;display:grid;gap:12px;margin-top:24px;}
.check-list li{display:flex;gap:10px;font-size:15px;line-height:1.8;color:var(--c-text2);}
.check-list svg{flex:none;margin-top:6px;color:var(--c-primary);}
.signup-card{
  background:#fff;border:1px solid var(--c-line);border-radius:var(--r-card);
  box-shadow:var(--sh-2);padding:24px;
}
.field{margin-bottom:16px;}
.field label{display:block;font-size:14px;color:var(--c-text2);margin-bottom:6px;}
.field input,.field select,.field textarea{
  width:100%;height:48px;border:1px solid var(--c-line);border-radius:var(--r-md);
  padding:0 14px;background:#fff;outline:none;
  transition:border-color .16s ease-out,box-shadow .16s ease-out;
}
.field textarea{height:auto;min-height:96px;padding:12px 14px;resize:vertical;line-height:1.7;}
.field input:focus,.field select:focus,.field textarea:focus{
  border-color:var(--c-primary);box-shadow:0 0 0 4px rgba(36,86,240,.08);
}
.form-error{font-size:13px;color:var(--c-accent);margin-top:6px;display:none;}
.form-tip{font-size:13px;color:var(--c-primary);margin-top:10px;min-height:20px;}
.form-note{font-size:12px;color:var(--c-muted);margin-top:10px;line-height:1.7;}

/* 评价 */
.review-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:24px;margin-top:32px;}
.review-card{
  background:#fff;border:1px solid var(--c-line);border-radius:var(--r-card);
  box-shadow:var(--sh-1);padding:24px;
  transition:transform .2s ease-out,border-color .2s ease-out,box-shadow .2s ease-out;
}
.review-card:hover{transform:translateY(-4px);border-color:rgba(36,86,240,.35);box-shadow:var(--sh-2);}
.review-text{font-size:15px;line-height:1.85;color:var(--c-text2);margin:0 0 18px;}
.review-meta{display:flex;align-items:center;gap:10px;font-size:13px;color:var(--c-muted);}
.avatar{
  width:34px;height:34px;border-radius:var(--r-pill);flex:none;
  background:var(--c-primary-soft);color:var(--c-primary-dark);
  display:flex;align-items:center;justify-content:center;font-size:14px;font-weight:700;
}

/* FAQ */
.faq-wrap{max-width:880px;margin:32px auto 0;display:grid;gap:12px;}
.faq-item{
  position:relative;background:#fff;border:1px solid var(--c-line);
  border-radius:var(--r-md);overflow:hidden;
  transition:border-color .18s ease-out,box-shadow .18s ease-out;
}
.faq-item.is-open{border-color:rgba(36,86,240,.35);box-shadow:var(--sh-1);}
.faq-item.is-open::before{
  content:"";position:absolute;left:0;top:14px;bottom:14px;width:3px;
  background:var(--c-primary);border-radius:0 3px 3px 0;
}
.faq-q{
  width:100%;display:flex;align-items:center;justify-content:space-between;gap:16px;
  padding:18px 20px;background:transparent;border:0;text-align:left;
  font-size:16px;font-weight:600;line-height:1.6;cursor:pointer;
}
.faq-sign{position:relative;flex:none;width:16px;height:16px;}
.faq-sign::before,.faq-sign::after{content:"";position:absolute;background:var(--c-primary);border-radius:2px;}
.faq-sign::before{left:0;top:7px;width:16px;height:2px;}
.faq-sign::after{left:7px;top:0;width:2px;height:16px;transition:transform .25s ease-out,opacity .25s ease-out;}
.faq-item.is-open .faq-sign::after{transform:rotate(90deg);opacity:0;}
.faq-a{max-height:0;overflow:hidden;transition:max-height .3s ease-out;}
.faq-item.is-open .faq-a{max-height:420px;}
.faq-a-inner{padding:0 20px 20px;font-size:15px;line-height:1.9;color:var(--c-text2);}

/* 资讯卡 */
.news-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:24px;margin-top:32px;}
.news-card{
  display:flex;flex-direction:column;background:#fff;
  border:1px solid var(--c-line);border-radius:var(--r-card);
  box-shadow:var(--sh-1);overflow:hidden;
  transition:transform .2s ease-out,border-color .2s ease-out,box-shadow .2s ease-out;
}
.news-card:hover{transform:translateY(-4px);border-color:rgba(36,86,240,.35);box-shadow:var(--sh-2);}
.news-media{display:block;aspect-ratio:16/9;overflow:hidden;background:#E9EEF7;}
.news-media img{width:100%;height:100%;object-fit:cover;transition:transform .4s ease-out;}
.news-card:hover .news-media img{transform:scale(1.03);}
.news-body{padding:20px;display:flex;flex-direction:column;gap:10px;flex:1;}
.news-title{
  font-size:18px;font-weight:600;line-height:1.45;margin:0;
  display:-webkit-box;-webkit-line-clamp:2;-webkit-box-orient:vertical;overflow:hidden;
}
.news-sum{
  font-size:14px;line-height:1.75;color:var(--c-text2);margin:0;
  display:-webkit-box;-webkit-line-clamp:3;-webkit-box-orient:vertical;overflow:hidden;
}
.news-foot{
  margin-top:auto;padding-top:14px;border-top:1px solid var(--c-line);
  display:flex;align-items:center;justify-content:space-between;gap:12px;
  font-size:13px;color:var(--c-muted);
}
.news-foot .go{color:var(--c-primary);font-weight:600;display:inline-flex;align-items:center;gap:4px;}

/* 空态 */
.empty-state{
  max-width:640px;margin:32px auto 0;padding:48px;
  border:1px dashed var(--c-line);border-radius:var(--r-card);
  background:#fff;text-align:center;
}
.empty-state svg{margin:0 auto 14px;color:var(--c-muted);}
.empty-state p{font-size:15px;color:var(--c-text2);margin:0 0 18px;}

/* 页脚 */
.site-footer{background:#0E1726;color:#fff;padding-top:64px;}
.footer-grid{display:grid;grid-template-columns:1.6fr 1fr 1fr 1.2fr;gap:40px;padding-bottom:40px;}
.footer-col h4{font-size:14px;font-weight:600;margin:0 0 16px;line-height:1.5;}
.footer-brand p{font-size:14px;line-height:1.8;color:rgba(255,255,255,.72);margin:16px 0 0;max-width:320px;}
.footer-links{list-style:none;display:grid;gap:10px;}
.footer-links a{font-size:14px;color:rgba(255,255,255,.72);transition:color .16s ease-out;}
.footer-links a:hover{color:#fff;text-decoration:underline;text-underline-offset:4px;}
.footer-links span{font-size:14px;color:rgba(255,255,255,.72);}
.brand-footer .brand-name{color:#fff;}
.brand-footer .brand-mark{border-color:rgba(255,255,255,.6);background:rgba(255,255,255,.08);}
.brand-footer .brand-mark i{background:#fff;}
.footer-bottom{
  border-top:1px solid rgba(255,255,255,.08);
  padding:20px 0;display:flex;align-items:center;justify-content:space-between;
  gap:12px;flex-wrap:wrap;font-size:13px;color:rgba(255,255,255,.5);
}

/* 响应式 */
@media (max-width:1279px){
  .search-box{width:200px;}
}
@media (max-width:1023px){
  .container-x{padding:0 24px;}
  .main-nav{display:none;}
  .search-box,.nav-text-link{display:none;}
  .menu-btn{display:inline-flex;}
  .section{padding:64px 0;}
  .hero{padding:40px 0 56px;}
  .hero-grid{grid-template-columns:1fr;gap:32px;min-height:auto;}
  .points-layout{grid-template-columns:1fr;gap:32px;}
  .points-intro{position:static;}
  .cta-block{grid-template-columns:1fr;padding:32px;gap:32px;}
  .gallery-grid{grid-template-columns:repeat(2,1fr);grid-auto-rows:170px;}
  .gallery-large{grid-column:span 2;grid-row:span 1;}
  .stat-strip{grid-template-columns:repeat(2,1fr);gap:20px;padding:24px;}
  .news-grid,.review-grid{grid-template-columns:repeat(2,1fr);}
  .news-grid .news-card:nth-child(n+7){display:none;}
  .footer-grid{grid-template-columns:1fr 1fr;gap:32px;}
}
@media (max-width:639px){
  .container-x{padding:0 16px;}
  .section{padding:48px 0;}
  .hero-visual > img{aspect-ratio:16/11;}
  .float-card{padding:10px 12px;font-size:12px;}
  .float-card-a{left:8px;bottom:8px;}
  .float-card-b{right:8px;top:8px;}
  .trust{gap:20px;}
  .trust strong{font-size:20px;}
  .points-list{grid-template-columns:1fr;gap:0;}
  .gallery-grid{grid-template-columns:repeat(2,1fr);grid-auto-rows:140px;gap:12px;}
  .gallery-cap{opacity:1;}
  .stat-strip{grid-template-columns:1fr 1fr;gap:16px;}
  .cta-block{padding:24px;border-radius:var(--r-card);}
  .news-grid,.review-grid{grid-template-columns:1fr;}
  .news-grid .news-card:nth-child(n+7){display:none;}
  .footer-grid{grid-template-columns:1fr;}
  .countdown-inner{gap:8px;font-size:13px;}
  .cd-label{overflow:hidden;white-space:nowrap;text-overflow:ellipsis;max-width:40%;}
  .cd-units{margin:0 auto;}
  .cd-unit{width:26px;height:26px;font-size:12px;}
  .cd-sep{font-size:11px;}
  .cd-link{display:none;}
  .faq-q{font-size:15px;padding:16px;}
  .faq-a-inner{padding:0 16px 18px;}
}

/* roulang page: category1 */
:root{
  --brand:#2456F0;
  --brand-dark:#1D45C9;
  --brand-soft:#EAF0FF;
  --aqua:#12C8C8;
  --accent:#FF6A1F;
  --accent-soft:#FFF1E8;
  --ink:#0E1726;
  --ink-mid:#3C4A5F;
  --ink-weak:#7A8798;
  --line:#E4EAF3;
  --canvas:#F5F7FB;
  --card:#FFFFFF;
  --r-sm:8px;
  --r-md:12px;
  --r-lg:16px;
  --r-xl:24px;
  --sh-1:0 1px 2px rgba(16,32,64,.06);
  --sh-2:0 8px 24px -8px rgba(23,52,120,.14);
  --sh-3:0 16px 40px -12px rgba(23,52,120,.18);
  --ease:cubic-bezier(.22,.61,.36,1);
}

*,*::before,*::after{box-sizing:border-box;}
html{-webkit-text-size-adjust:100%;scroll-behavior:smooth;}
body{
  margin:0;
  font-family:"PingFang SC","HarmonyOS Sans SC","Microsoft YaHei",system-ui,-apple-system,sans-serif;
  font-size:16px;
  line-height:1.85;
  color:var(--ink);
  background:var(--canvas);
  -webkit-font-smoothing:antialiased;
}
img{max-width:100%;display:block;}
a{color:inherit;text-decoration:none;transition:color .18s var(--ease),background-color .18s var(--ease),border-color .18s var(--ease);}
a:hover{color:var(--brand-dark);}
button{font:inherit;cursor:pointer;border:0;background:none;color:inherit;}
input,select,textarea{font:inherit;color:inherit;}
h1,h2,h3,h4{margin:0;line-height:1.28;letter-spacing:0;}
p{margin:0;}
ul{margin:0;padding:0;list-style:none;}
:focus-visible{outline:2px solid rgba(36,86,240,.45);outline-offset:2px;border-radius:6px;}

.container-x{width:100%;max-width:1200px;margin:0 auto;padding:0 16px;}
@media (min-width:640px){.container-x{padding:0 24px;}}
@media (min-width:1024px){.container-x{padding:0 32px;}}

/* ---------- 顶部导航 ---------- */
.site-header{
  position:sticky;top:0;z-index:50;
  background:rgba(255,255,255,.92);
  backdrop-filter:blur(12px);
  -webkit-backdrop-filter:blur(12px);
  border-bottom:1px solid var(--line);
}
.header-inner{display:flex;align-items:center;justify-content:space-between;gap:20px;height:64px;}
.brand{display:inline-flex;align-items:center;gap:10px;flex:none;}
.brand-mark{
  width:28px;height:28px;border-radius:9px;background:var(--brand);
  display:grid;place-items:center;position:relative;flex:none;
  box-shadow:inset 0 0 0 1px rgba(255,255,255,.18);
}
.brand-mark i{width:8px;height:8px;border-radius:50%;background:#fff;display:block;}
.brand-name{font-size:17px;font-weight:700;color:var(--ink);letter-spacing:0;}
.brand-footer .brand-name{color:#fff;}
.brand-footer .brand-mark{background:var(--brand);}

.main-nav{display:none;align-items:center;gap:2px;}
@media (min-width:1120px){.main-nav{display:flex;}}
.nav-link{
  position:relative;display:inline-block;padding:9px 12px;border-radius:var(--r-sm);
  font-size:15px;font-weight:500;color:var(--ink-mid);white-space:nowrap;
}
.nav-link:hover{color:var(--brand);background:var(--brand-soft);}
.nav-link.is-active{color:var(--brand);}
.nav-link.is-active::after{
  content:"";position:absolute;left:12px;right:12px;bottom:2px;height:2px;
  border-radius:2px;background:var(--brand);
}

.header-tools{display:flex;align-items:center;gap:12px;}
.command-search{
  display:none;align-items:center;gap:8px;width:240px;height:40px;padding:0 10px 0 12px;
  background:var(--canvas);border:1px solid transparent;border-radius:var(--r-md);
  transition:background-color .18s var(--ease),border-color .18s var(--ease);
}
@media (min-width:1120px){.command-search{display:flex;}}
.command-search:focus-within{background:#fff;border-color:var(--brand);box-shadow:0 0 0 4px rgba(36,86,240,.08);}
.command-search svg{flex:none;color:var(--ink-weak);}
.command-search input{
  flex:1;min-width:0;border:0;background:transparent;outline:none;
  font-size:14px;color:var(--ink);
}
.command-search input::placeholder{color:var(--ink-weak);}
.kbd{
  flex:none;font-size:11px;line-height:1;color:var(--ink-weak);
  padding:4px 6px;border:1px solid var(--line);border-radius:6px;background:#fff;
}
.link-quiet{display:none;font-size:14px;font-weight:500;color:var(--ink-mid);padding:8px 4px;}
@media (min-width:1120px){.link-quiet{display:inline-block;}}
.link-quiet:hover{color:var(--brand);text-decoration:underline;text-underline-offset:4px;text-decoration-thickness:2px;}

.btn{
  display:inline-flex;align-items:center;justify-content:center;gap:8px;
  height:48px;padding:0 24px;border-radius:var(--r-md);
  font-size:15px;font-weight:600;line-height:1;white-space:nowrap;
  transition:transform .18s var(--ease),background-color .18s var(--ease),
             color .18s var(--ease),box-shadow .18s var(--ease),border-color .18s var(--ease);
}
.btn svg{flex:none;transition:transform .18s var(--ease);}
.btn-primary{background:var(--brand);color:#fff;box-shadow:var(--sh-1);}
.btn-primary:hover{background:var(--brand-dark);color:#fff;transform:translateY(-1px);box-shadow:var(--sh-2);}
.btn-primary:active{transform:translateY(0);box-shadow:var(--sh-1);}
.btn-ghost{background:#fff;color:var(--ink);border:1px solid var(--line);}
.btn-ghost:hover{border-color:rgba(36,86,240,.45);color:var(--brand);transform:translateY(-1px);box-shadow:var(--sh-1);}
.btn-accent{background:var(--accent);color:#fff;}
.btn-accent:hover{background:#EA5A12;color:#fff;transform:translateY(-1px);box-shadow:var(--sh-2);}
.btn-sm{height:40px;padding:0 16px;font-size:14px;border-radius:var(--r-md);}
.btn-text{display:inline-flex;align-items:center;gap:6px;color:var(--brand);font-size:15px;font-weight:600;}
.btn-text:hover{color:var(--brand-dark);text-decoration:underline;text-underline-offset:4px;text-decoration-thickness:2px;}
.btn-text:hover svg{transform:translateX(2px);}

.menu-toggle{
  display:inline-flex;align-items:center;justify-content:center;
  width:40px;height:40px;border-radius:var(--r-md);border:1px solid var(--line);background:#fff;
  color:var(--ink);
}
@media (min-width:1120px){.menu-toggle{display:none;}}
.menu-toggle:hover{border-color:rgba(36,86,240,.4);color:var(--brand);}

.drawer-mask{
  position:fixed;inset:0;z-index:60;background:rgba(14,23,38,.45);
  opacity:0;visibility:hidden;transition:opacity .2s var(--ease),visibility .2s var(--ease);
}
.drawer-mask.is-open{opacity:1;visibility:visible;}
.drawer{
  position:fixed;top:0;right:0;bottom:0;z-index:61;width:min(320px,86vw);
  background:#fff;padding:20px;display:flex;flex-direction:column;gap:18px;
  transform:translateX(100%);transition:transform .24s var(--ease);
  box-shadow:var(--sh-3);overflow-y:auto;
}
.drawer.is-open{transform:translateX(0);}
.drawer-head{display:flex;align-items:center;justify-content:space-between;}
.drawer-close{width:36px;height:36px;border-radius:var(--r-sm);border:1px solid var(--line);display:grid;place-items:center;background:#fff;}
.drawer-nav{display:flex;flex-direction:column;gap:4px;}
.drawer-nav a{padding:12px 12px;border-radius:var(--r-sm);font-size:15px;font-weight:500;color:var(--ink-mid);}
.drawer-nav a:hover,.drawer-nav a.is-active{background:var(--brand-soft);color:var(--brand);}
.drawer-search{display:flex;align-items:center;gap:8px;height:44px;padding:0 12px;background:var(--canvas);border-radius:var(--r-md);}
.drawer-search input{flex:1;min-width:0;border:0;background:transparent;outline:none;font-size:14px;}
.drawer-note{font-size:13px;color:var(--ink-weak);line-height:1.7;}

/* ---------- 首屏横幅 ---------- */
.page-hero{position:relative;overflow:hidden;background:var(--ink);}
.page-hero-bg{
  position:absolute;inset:0;background-size:cover;background-position:center;
  transform:scale(1.02);
}
.page-hero-veil{
  position:absolute;inset:0;
  background:linear-gradient(100deg,rgba(14,23,38,.9) 0%,rgba(14,23,38,.74) 46%,rgba(36,86,240,.62) 100%);
}
.page-hero-inner{position:relative;padding:52px 0 56px;}
@media (min-width:768px){.page-hero-inner{padding:72px 0 76px;}}
.breadcrumb{display:flex;flex-wrap:wrap;align-items:center;gap:8px;font-size:14px;color:rgba(255,255,255,.68);}
.breadcrumb a{color:rgba(255,255,255,.68);}
.breadcrumb a:hover{color:#fff;text-decoration:underline;text-underline-offset:4px;}
.breadcrumb .sep{opacity:.5;}
.breadcrumb .current{color:#9FC0FF;}
.page-hero h1{
  margin-top:16px;color:#fff;font-weight:700;
  font-size:clamp(30px,4.4vw,48px);line-height:1.22;max-width:760px;
}
.hero-sub{margin-top:16px;font-size:17px;line-height:1.75;color:rgba(255,255,255,.82);max-width:620px;}
.hero-tags{display:flex;flex-wrap:wrap;gap:8px;margin-top:22px;}
.badge{
  display:inline-flex;align-items:center;gap:6px;height:24px;padding:0 10px;
  border-radius:999px;font-size:12px;font-weight:500;line-height:1;
}
.badge-soft{background:rgba(255,255,255,.16);color:#fff;}
.badge-brand{background:var(--brand-soft);color:var(--brand);}
.badge-aqua{background:rgba(18,200,200,.12);color:#0B8E8E;}
.badge-flame{background:var(--accent-soft);color:var(--accent);}
.dot-pulse{width:6px;height:6px;border-radius:50%;background:currentColor;}
.hero-actions{display:flex;flex-wrap:wrap;gap:12px;margin-top:28px;}
.hero-actions .btn-ghost{background:rgba(255,255,255,.1);color:#fff;border-color:rgba(255,255,255,.35);}
.hero-actions .btn-ghost:hover{background:rgba(255,255,255,.18);color:#fff;border-color:#fff;}

/* ---------- 锚点条 ---------- */
.anchor-bar{
  position:sticky;top:64px;z-index:40;background:rgba(255,255,255,.96);
  backdrop-filter:blur(10px);border-bottom:1px solid var(--line);
}
.anchor-inner{display:flex;gap:10px;overflow-x:auto;padding-top:12px;padding-bottom:12px;scrollbar-width:none;}
.anchor-inner::-webkit-scrollbar{display:none;}
.pill{
  flex:none;display:inline-flex;align-items:center;height:36px;padding:0 16px;
  border:1px solid var(--line);border-radius:999px;background:#fff;
  font-size:14px;font-weight:500;color:var(--ink-mid);white-space:nowrap;
}
.pill:hover{border-color:rgba(36,86,240,.4);color:var(--brand);background:var(--brand-soft);}
.pill.is-active{background:var(--brand);border-color:var(--brand);color:#fff;}

/* ---------- 通用板块 ---------- */
.section{padding:56px 0;}
@media (min-width:768px){.section{padding:76px 0;}}
@media (min-width:1024px){.section{padding:88px 0;}}
section[id]{scroll-margin-top:132px;}
.section-head{max-width:720px;}
.section-head h2{font-size:clamp(24px,3vw,32px);font-weight:700;}
.section-head p{margin-top:14px;font-size:16px;line-height:1.85;color:var(--ink-mid);}
.eyebrow{
  display:inline-flex;align-items:center;gap:8px;font-size:13px;font-weight:600;
  color:var(--brand);letter-spacing:.04em;
}
.eyebrow::before{content:"";width:2px;height:14px;background:var(--brand);border-radius:2px;}
.alt-bg{background:#fff;}

/* ---------- 双栏区块 ---------- */
.split{display:grid;gap:32px;}
@media (min-width:1024px){.split{grid-template-columns:minmax(0,1.45fr) minmax(0,1fr);gap:48px;}}
.prose-block h2{font-size:clamp(22px,2.6vw,30px);font-weight:700;}
.prose-block p{margin-top:16px;font-size:16px;line-height:1.9;color:var(--ink-mid);}
.prose-block p strong{color:var(--ink);font-weight:600;}
.keyline{display:flex;gap:12px;align-items:flex-start;margin-top:18px;font-size:15px;color:var(--ink-mid);}
.keyline .num{
  flex:none;width:26px;height:26px;border-radius:8px;background:var(--brand-soft);color:var(--brand);
  font-size:12px;font-weight:700;display:grid;place-items:center;margin-top:4px;
}
.info-card{
  background:#fff;border:1px solid var(--line);border-radius:var(--r-lg);
  box-shadow:var(--sh-1);padding:20px;
  transition:transform .18s var(--ease),box-shadow .18s var(--ease),border-color .18s var(--ease);
}
@media (min-width:640px){.info-card{padding:24px;}}
.info-card:hover{transform:translateY(-4px);box-shadow:var(--sh-2);border-color:rgba(36,86,240,.35);}
.info-card figure{margin:0;}
.info-card img{width:100%;aspect-ratio:16/9;object-fit:cover;border-radius:var(--r-md);}
.info-card h3{margin-top:18px;font-size:18px;font-weight:600;}
.info-card p{margin-top:10px;font-size:15px;line-height:1.8;color:var(--ink-mid);}
.info-list{margin-top:18px;border-top:1px solid var(--line);padding-top:6px;}
.info-list li{
  display:flex;gap:10px;align-items:flex-start;padding:12px 0;border-bottom:1px solid var(--line);
  font-size:15px;color:var(--ink-mid);
}
.info-list li:last-child{border-bottom:0;}
.info-list .tick{
  flex:none;width:18px;height:18px;border-radius:50%;background:var(--brand-soft);
  color:var(--brand);display:grid;place-items:center;margin-top:5px;font-size:11px;font-weight:700;
}
.mini-thumbs{display:grid;grid-template-columns:repeat(2,1fr);gap:12px;margin-top:18px;}
.mini-thumbs img{width:100%;aspect-ratio:4/3;object-fit:cover;border-radius:var(--r-md);}
.mini-thumbs figcaption{margin-top:8px;font-size:13px;color:var(--ink-weak);line-height:1.6;}

/* ---------- 特性卡 ---------- */
.feature-grid{display:grid;gap:20px;margin-top:36px;}
@media (min-width:640px){.feature-grid{grid-template-columns:repeat(2,minmax(0,1fr));}}
@media (min-width:1024px){.feature-grid{grid-template-columns:repeat(3,minmax(0,1fr));}}
.feature-card{
  background:#fff;border:1px solid var(--line);border-radius:var(--r-lg);padding:22px;
  box-shadow:var(--sh-1);
  transition:transform .18s var(--ease),box-shadow .18s var(--ease),border-color .18s var(--ease);
}
.feature-card:hover{transform:translateY(-4px);box-shadow:var(--sh-2);border-color:rgba(36,86,240,.35);}
.feature-top{display:flex;align-items:center;justify-content:space-between;}
.feature-no{font-size:13px;font-weight:700;color:var(--brand);letter-spacing:.06em;font-variant-numeric:tabular-nums;}
.feature-icon{
  width:40px;height:40px;border-radius:var(--r-md);background:var(--brand-soft);
  display:grid;place-items:center;color:var(--brand);
}
.feature-card h3{margin-top:16px;font-size:17px;font-weight:600;}
.feature-card p{margin-top:10px;font-size:15px;line-height:1.8;color:var(--ink-mid);}

/* ---------- 数据条 ---------- */
.stat-band{
  margin-top:8px;background:var(--brand-soft);border-radius:var(--r-xl);padding:28px 20px;
  display:grid;gap:24px;grid-template-columns:repeat(2,minmax(0,1fr));
}
@media (min-width:640px){.stat-band{padding:32px;}}
@media (min-width:900px){.stat-band{grid-template-columns:repeat(4,minmax(0,1fr));padding:36px 40px;}}
.stat-item{text-align:left;}
.stat-num{
  font-size:26px;font-weight:700;color:var(--brand);line-height:1.2;
  font-variant-numeric:tabular-nums;
}
@media (min-width:768px){.stat-num{font-size:30px;}}
.stat-label{margin-top:8px;font-size:13px;color:var(--ink-mid);line-height:1.7;}

/* ---------- FAQ ---------- */
.faq-list{max-width:880px;margin-top:32px;display:flex;flex-direction:column;gap:12px;}
.faq-item{
  background:#fff;border:1px solid var(--line);border-radius:var(--r-md);
  box-shadow:var(--sh-1);overflow:hidden;position:relative;
  transition:border-color .18s var(--ease),box-shadow .18s var(--ease);
}
.faq-item::before{
  content:"";position:absolute;left:0;top:0;bottom:0;width:3px;background:var(--brand);
  transform:scaleY(0);transform-origin:top;transition:transform .2s var(--ease);
}
.faq-item.is-open{border-color:rgba(36,86,240,.35);box-shadow:var(--sh-2);}
.faq-item.is-open::before{transform:scaleY(1);}
.faq-q{
  width:100%;display:flex;align-items:center;justify-content:space-between;gap:16px;
  padding:18px 20px;text-align:left;font-size:16px;font-weight:600;color:var(--ink);
}
.faq-q:hover{color:var(--brand);}
.faq-icon{
  flex:none;width:26px;height:26px;border-radius:50%;background:var(--brand-soft);color:var(--brand);
  display:grid;place-items:center;font-size:15px;font-weight:700;line-height:1;
  transition:transform .2s var(--ease);
}
.faq-item.is-open .faq-icon{transform:rotate(90deg);}
.faq-a{max-height:0;overflow:hidden;transition:max-height .24s var(--ease);}
.faq-a p{padding:0 20px 20px;font-size:15px;line-height:1.9;color:var(--ink-mid);}

/* ---------- CTA ---------- */
.cta-band{
  background:#fff;border:1px solid var(--line);border-radius:var(--r-xl);
  padding:32px 24px;box-shadow:var(--sh-2);
  display:flex;flex-direction:column;gap:24px;align-items:flex-start;
}
@media (min-width:768px){
  .cta-band{padding:40px 48px;flex-direction:row;align-items:center;justify-content:space-between;}
}
.cta-band h2{font-size:clamp(22px,2.6vw,28px);font-weight:700;}
.cta-band p{margin-top:12px;font-size:15px;line-height:1.85;color:var(--ink-mid);max-width:560px;}
.cta-actions{display:flex;flex-wrap:wrap;gap:12px;}
.cta-note{margin-top:14px;font-size:13px;color:var(--ink-weak);}

/* ---------- 页脚 ---------- */
.site-footer{background:var(--ink);color:#fff;margin-top:72px;}
@media (min-width:1024px){.site-footer{margin-top:96px;}}
.footer-grid{
  display:grid;gap:32px;padding-top:52px;padding-bottom:32px;
  grid-template-columns:1fr;
}
@media (min-width:640px){.footer-grid{grid-template-columns:repeat(2,minmax(0,1fr));}}
@media (min-width:1024px){.footer-grid{grid-template-columns:1.5fr 1fr 1fr 1fr;padding-top:64px;}}
.footer-brand p{margin-top:16px;font-size:14px;line-height:1.85;color:rgba(255,255,255,.72);max-width:320px;}
.footer-col h4{margin:0 0 16px;font-size:14px;font-weight:600;color:#fff;}
.footer-links{display:flex;flex-direction:column;gap:10px;}
.footer-links a,.footer-links span{font-size:14px;line-height:1.7;color:rgba(255,255,255,.72);}
.footer-links a:hover{color:#fff;text-decoration:underline;text-underline-offset:4px;}
.footer-bottom{
  border-top:1px solid rgba(255,255,255,.08);
  display:flex;flex-wrap:wrap;gap:8px;justify-content:space-between;align-items:center;
  padding-top:20px;padding-bottom:28px;font-size:13px;color:rgba(255,255,255,.5);
}

@media (prefers-reduced-motion:reduce){
  *{animation:none !important;transition:none !important;}
  html{scroll-behavior:auto;}
}

/* roulang page: article */
:root{
    --ink:#0E1726;
    --ink-2:#3C4A5F;
    --ink-3:#7A8798;
    --line:#E4EAF3;
    --bg:#F5F7FB;
    --card:#FFFFFF;
    --blue:#2456F0;
    --blue-d:#1D45C9;
    --blue-l:#EAF0FF;
    --cyan:#12C8C8;
    --orange:#FF6A1F;
    --orange-l:#FFF1E8;
    --r-xs:8px;
    --r-sm:12px;
    --r-card:16px;
    --r-lg:24px;
    --r-pill:999px;
    --sh-1:0 1px 2px rgba(16,32,64,.06);
    --sh-2:0 8px 24px -8px rgba(23,52,120,.14);
    --sh-3:0 16px 40px -12px rgba(23,52,120,.18);
  }
  *,*::before,*::after{box-sizing:border-box;}
  html{-webkit-text-size-adjust:100%;scroll-behavior:smooth;}
  body{
    margin:0;
    font-family:"PingFang SC","HarmonyOS Sans SC","Microsoft YaHei",system-ui,-apple-system,"Segoe UI",sans-serif;
    font-size:16px;
    line-height:1.85;
    color:var(--ink);
    background:var(--bg);
    -webkit-font-smoothing:antialiased;
  }
  img{max-width:100%;display:block;border:0;}
  a{color:var(--blue);text-decoration:none;transition:color .18s ease-out,background-color .18s ease-out,border-color .18s ease-out;}
  p{margin:0 0 18px;}
  h1,h2,h3,h4{margin:0;letter-spacing:0;color:var(--ink);}
  ul,ol{margin:0;}
  button{background:none;border:0;cursor:pointer;}
  input,select,textarea{font:inherit;color:inherit;}
  :focus-visible{outline:2px solid rgba(36,86,240,.45);outline-offset:2px;border-radius:6px;}
  .tnum{font-variant-numeric:tabular-nums;}
  ::-webkit-scrollbar{width:10px;height:10px;}
  ::-webkit-scrollbar-thumb{background:#CFD8E8;border-radius:999px;border:2px solid var(--bg);}
  ::-webkit-scrollbar-thumb:hover{background:#B6C2D8;}
  ::-webkit-scrollbar-track{background:transparent;}

  .container-x{width:100%;max-width:1200px;margin:0 auto;padding:0 16px;}

  /* ---------- 顶部导航 ---------- */
  .site-header{
    position:sticky;top:0;z-index:50;
    background:rgba(255,255,255,.92);
    backdrop-filter:blur(12px);
    -webkit-backdrop-filter:blur(12px);
    border-bottom:1px solid var(--line);
  }
  .header-inner{display:flex;align-items:center;gap:20px;height:64px;}
  .brand{display:inline-flex;align-items:center;gap:10px;color:var(--ink);font-weight:700;font-size:17px;}
  .brand:hover{color:var(--blue);}
  .brand-mark{
    width:30px;height:30px;border-radius:9px;background:var(--blue);
    display:inline-flex;align-items:center;justify-content:center;
    box-shadow:inset 0 0 0 1px rgba(255,255,255,.25),0 4px 10px -6px rgba(36,86,240,.9);
    flex:0 0 auto;
  }
  .brand-mark i{width:10px;height:10px;border-radius:50%;background:#fff;display:block;}
  .brand-name{white-space:nowrap;}
  .main-nav{display:flex;align-items:center;gap:2px;margin-left:6px;}
  .nav-link{
    position:relative;display:inline-block;padding:8px 12px;
    font-size:15px;font-weight:500;color:var(--ink-2);border-radius:var(--r-xs);white-space:nowrap;
  }
  .nav-link:hover{color:var(--blue);background:var(--blue-l);}
  .nav-link.is-active{color:var(--blue);}
  .nav-link.is-active::after{
    content:"";position:absolute;left:12px;right:12px;bottom:2px;height:2px;
    background:var(--blue);border-radius:2px;
  }
  .header-tools{display:flex;align-items:center;gap:12px;margin-left:auto;}
  .search-box{
    position:relative;display:flex;align-items:center;gap:8px;
    width:240px;height:40px;padding:0 10px 0 34px;
    background:var(--bg);border:1px solid transparent;border-radius:var(--r-sm);
    transition:background-color .18s ease-out,border-color .18s ease-out,box-shadow .18s ease-out;
  }
  .search-box:focus-within{background:#fff;border-color:var(--blue);box-shadow:0 0 0 3px rgba(36,86,240,.12);}
  .search-box .s-icon{position:absolute;left:10px;top:50%;transform:translateY(-50%);color:var(--ink-3);}
  .search-box input{flex:1 1 auto;min-width:0;border:0;background:transparent;outline:none;font-size:14px;color:var(--ink);}
  .search-box input::placeholder{color:var(--ink-3);}
  .kbd{
    flex:0 0 auto;font-size:11px;line-height:1;color:var(--ink-3);
    padding:4px 6px;border:1px solid var(--line);border-radius:6px;background:#fff;
  }
  .tool-link{font-size:14px;color:var(--ink-2);padding:0 2px;white-space:nowrap;}
  .tool-link:hover{color:var(--blue);text-decoration:underline;text-underline-offset:4px;text-decoration-thickness:2px;}

  .btn{
    display:inline-flex;align-items:center;justify-content:center;gap:8px;
    border:1px solid transparent;border-radius:var(--r-sm);
    font-size:15px;font-weight:600;cursor:pointer;white-space:nowrap;
    transition:background-color .18s ease-out,color .18s ease-out,border-color .18s ease-out,transform .18s ease-out,box-shadow .18s ease-out;
  }
  .btn svg{flex:0 0 auto;}
  .btn-primary{background:var(--blue);color:#fff;height:40px;padding:0 18px;}
  .btn-primary:hover{background:var(--blue-d);color:#fff;transform:translateY(-1px);box-shadow:var(--sh-2);}
  .btn-primary:active{transform:none;}
  .btn-accent{background:var(--orange);color:#fff;height:48px;padding:0 24px;}
  .btn-accent:hover{background:#E85A12;color:#fff;transform:translateY(-1px);box-shadow:var(--sh-2);}
  .btn-ghost{background:#fff;border-color:var(--line);color:var(--ink);height:48px;padding:0 24px;}
  .btn-ghost:hover{border-color:rgba(36,86,240,.45);color:var(--blue);transform:translateY(-1px);box-shadow:var(--sh-1);}
  .btn-lg{height:48px;padding:0 24px;font-size:16px;}
  .btn-block{width:100%;}
  .btn-text{display:inline-flex;align-items:center;gap:6px;color:var(--blue);font-weight:600;font-size:15px;}
  .btn-text:hover{color:var(--blue-d);}
  .btn-text:hover svg{transform:translateX(2px);}
  .btn-text svg{transition:transform .18s ease-out;}

  .hamburger{
    display:none;width:40px;height:40px;border:1px solid var(--line);border-radius:var(--r-sm);
    background:#fff;align-items:center;justify-content:center;flex-direction:column;gap:4px;
  }
  .hamburger span{display:block;width:16px;height:2px;background:var(--ink);border-radius:2px;}
  .hamburger:hover{border-color:rgba(36,86,240,.45);}

  /* ---------- 移动端抽屉 ---------- */
  .drawer-mask{
    position:fixed;inset:0;background:rgba(14,23,38,.45);z-index:60;
    opacity:0;visibility:hidden;transition:opacity .2s ease-out,visibility .2s ease-out;
  }
  .drawer-mask.is-open{opacity:1;visibility:visible;}
  .drawer{
    position:fixed;top:0;right:0;bottom:0;width:min(320px,86vw);z-index:70;
    background:#fff;padding:20px;overflow-y:auto;
    transform:translateX(101%);transition:transform .22s ease-out;
    display:flex;flex-direction:column;gap:18px;
    box-shadow:var(--sh-3);
  }
  .drawer.is-open{transform:translateX(0);}
  .drawer-head{display:flex;align-items:center;justify-content:space-between;gap:12px;}
  .drawer-close{
    width:36px;height:36px;border-radius:var(--r-xs);border:1px solid var(--line);
    font-size:20px;line-height:1;color:var(--ink-2);
  }
  .drawer-close:hover{color:var(--blue);border-color:rgba(36,86,240,.45);}
  .drawer-nav{display:flex;flex-direction:column;gap:6px;}
  .drawer-nav a{
    padding:10px 12px;border-radius:var(--r-xs);font-size:15px;font-weight:500;
    color:var(--ink-2);border:1px solid transparent;
  }
  .drawer-nav a:hover{background:var(--blue-l);color:var(--blue);}
  .search-box-full{width:100%;}

  /* ---------- 面包屑 ---------- */
  .crumbs{
    display:flex;flex-wrap:wrap;align-items:center;gap:8px;
    font-size:14px;color:var(--ink-3);padding:22px 0 6px;
  }
  .crumbs a{color:var(--ink-3);}
  .crumbs a:hover{color:var(--blue);}
  .crumbs .sep{color:#C7D0DE;}
  .crumbs .cur{color:var(--blue);font-weight:600;}

  /* ---------- 文章版式 ---------- */
  .post-layout{
    display:grid;grid-template-columns:minmax(0,800px) 240px;
    gap:48px;justify-content:center;align-items:start;
    padding:14px 0 88px;
  }
  .post-main{min-width:0;}
  .post-head{padding:6px 0 26px;border-bottom:1px solid var(--line);}
  .post-head h1{
    font-size:clamp(26px,3.4vw,38px);line-height:1.35;font-weight:700;
    letter-spacing:0;margin:16px 0 18px;
  }
  .post-meta{display:flex;flex-wrap:wrap;align-items:center;gap:12px;font-size:14px;color:var(--ink-3);}
  .post-meta .dot{width:1px;height:12px;background:var(--line);}
  .badge{
    display:inline-flex;align-items:center;gap:6px;height:24px;padding:0 10px;
    border-radius:var(--r-pill);font-size:12px;font-weight:600;line-height:1;
  }
  .badge-cat{background:var(--blue-l);color:var(--blue);}
  .badge-state{background:rgba(18,200,200,.13);color:#0E9A9A;}
  .badge-time{background:var(--orange-l);color:var(--orange);}
  .pulse{width:6px;height:6px;border-radius:50%;background:var(--orange);animation:pulse 1.7s ease-out infinite;}
  @keyframes pulse{
    0%{box-shadow:0 0 0 0 rgba(255,106,31,.45);}
    70%{box-shadow:0 0 0 6px rgba(255,106,31,0);}
    100%{box-shadow:0 0 0 0 rgba(255,106,31,0);}
  }

  .article-body{
    background:var(--card);border:1px solid var(--line);border-radius:var(--r-card);
    padding:48px;box-shadow:var(--sh-1);margin-top:28px;
  }
  .article-body p{font-size:17px;line-height:1.95;color:var(--ink-2);margin:0 0 20px;}
  .article-body h2{
    position:relative;font-size:26px;font-weight:700;line-height:1.45;
    margin:44px 0 18px;padding-left:14px;color:var(--ink);
  }
  .article-body h2:first-child{margin-top:0;}
  .article-body h2::before{
    content:"";position:absolute;left:0;top:7px;bottom:7px;width:3px;
    border-radius:2px;background:var(--blue);
  }
  .article-body h3{font-size:20px;font-weight:600;line-height:1.6;margin:32px 0 14px;color:var(--ink);}
  .article-body ul{list-style:disc;padding-left:22px;margin:0 0 20px;}
  .article-body ol{list-style:decimal;padding-left:22px;margin:0 0 20px;}
  .article-body li{font-size:17px;line-height:1.9;color:var(--ink-2);margin-bottom:10px;}
  .article-body ul li::marker{color:var(--blue);}
  .article-body ol li::marker{color:var(--blue);font-weight:600;}
  .article-body blockquote{
    margin:24px 0;padding:18px 22px;background:var(--blue-l);
    border-left:3px solid var(--blue);border-radius:0 var(--r-sm) var(--r-sm) 0;
    color:var(--ink-2);font-size:16px;line-height:1.9;
  }
  .article-body blockquote p:last-child{margin-bottom:0;}
  .article-body a{color:var(--blue);font-weight:500;text-decoration:underline;text-underline-offset:4px;}
  .article-body a:hover{color:var(--blue-d);}
  .article-body img{border-radius:var(--r-sm);margin:24px 0 10px;}
  .article-body figure{margin:24px 0;}
  .article-body figcaption{font-size:13px;color:var(--ink-3);text-align:center;margin-top:8px;}
  .article-body table{
    width:100%;border-collapse:collapse;margin:24px 0;font-size:15px;
    border-radius:var(--r-sm);overflow:hidden;box-shadow:var(--sh-1);
  }
  .article-body th{background:var(--blue-l);color:var(--blue);font-weight:600;text-align:left;}
  .article-body th,.article-body td{padding:12px 16px;border:0;}
  .article-body td{color:var(--ink-2);}
  .article-body tbody tr:nth-child(even){background:var(--bg);}
  .article-body hr{border:0;border-top:1px solid var(--line);margin:32px 0;}

  .empty-state{
    border:1px dashed var(--line);border-radius:var(--r-card);
    padding:48px 24px;text-align:center;
  }
  .empty-state svg{color:var(--ink-3);margin:0 auto 14px;}
  .empty-state p{font-size:15px;color:var(--ink-2);margin:0 0 18px;}

  /* ---------- 目录 ---------- */
  .toc{position:sticky;top:88px;padding-left:18px;border-left:1px solid var(--line);}
  .toc-title{font-size:13px;font-weight:600;color:var(--ink-3);margin-bottom:12px;}
  .toc a{
    position:relative;display:block;padding:7px 0 7px 12px;
    font-size:14px;line-height:1.6;color:var(--ink-2);
  }
  .toc a:hover{color:var(--blue);}
  .toc a.is-current{color:var(--blue);font-weight:600;}
  .toc a.is-current::before{
    content:"";position:absolute;left:0;top:9px;bottom:9px;width:2px;
    background:var(--blue);border-radius:2px;
  }
  .toc-mobile{display:none;margin-top:24px;border:1px solid var(--line);border-radius:var(--r-sm);background:#fff;}
  .toc-mobile summary{
    list-style:none;cursor:pointer;padding:14px 18px;font-size:15px;font-weight:600;color:var(--ink);
    display:flex;align-items:center;justify-content:space-between;
  }
  .toc-mobile summary::-webkit-details-marker{display:none;}
  .toc-mobile summary::after{content:"+";font-size:18px;color:var(--blue);line-height:1;}
  .toc-mobile[open] summary::after{content:"−";}
  .toc-mobile-list{padding:0 18px 14px;display:flex;flex-direction:column;}
  .toc-mobile-list a{font-size:14px;color:var(--ink-2);padding:6px 0;}
  .toc-mobile-list a:hover{color:var(--blue);}

  /* ---------- 文章尾部 ---------- */
  .post-foot{margin-top:36px;}
  .tag-row{display:flex;flex-wrap:wrap;gap:10px;margin-bottom:28px;}
  .tag{
    display:inline-flex;align-items:center;height:30px;padding:0 14px;
    border-radius:var(--r-pill);background:#fff;border:1px solid var(--line);
    font-size:13px;color:var(--ink-2);
  }
  .tag:hover{border-color:rgba(36,86,240,.45);color:var(--blue);transform:translateY(-1px);}
  .pn-grid{display:grid;grid-template-columns:1fr 1fr;gap:16px;}
  .pn-card{
    display:block;background:#fff;border:1px solid var(--line);border-radius:var(--r-sm);
    padding:18px 20px;box-shadow:var(--sh-1);
    transition:transform .18s ease-out,box-shadow .18s ease-out,border-color .18s ease-out;
  }
  .pn-card:hover{transform:translateY(-4px);border-color:rgba(36,86,240,.35);box-shadow:var(--sh-2);}
  .pn-card small{display:block;font-size:12px;color:var(--ink-3);margin-bottom:6px;}
  .pn-card strong{
    display:block;font-size:15px;font-weight:600;color:var(--ink);
    overflow:hidden;text-overflow:ellipsis;white-space:nowrap;
  }
  .pn-card:hover strong{color:var(--blue);}

  /* ---------- 相关推荐 ---------- */
  .rel-section{padding:0 0 88px;}
  .sec-head{display:flex;align-items:flex-end;justify-content:space-between;gap:20px;margin-bottom:28px;}
  .sec-head h2{font-size:28px;font-weight:700;line-height:1.35;}
  .sec-head p{font-size:15px;color:var(--ink-3);margin:8px 0 0;}
  .rel-grid{display:grid;grid-template-columns:repeat(3,minmax(0,1fr));gap:24px;}
  .card{
    display:block;background:#fff;border:1px solid var(--line);border-radius:var(--r-card);
    overflow:hidden;box-shadow:var(--sh-1);
    transition:transform .18s ease-out,box-shadow .18s ease-out,border-color .18s ease-out;
  }
  .card:hover{transform:translateY(-4px);border-color:rgba(36,86,240,.35);box-shadow:var(--sh-2);}
  .card-cover{width:100%;aspect-ratio:16/9;object-fit:cover;background:var(--bg);}
  .card-body{padding:20px;}
  .card-title{
    font-size:18px;font-weight:600;line-height:1.5;color:var(--ink);margin:12px 0 10px;
    display:-webkit-box;-webkit-line-clamp:2;-webkit-box-orient:vertical;overflow:hidden;
  }
  .card:hover .card-title{color:var(--blue);}
  .card-desc{
    font-size:14.5px;line-height:1.75;color:var(--ink-2);margin:0;
    display:-webkit-box;-webkit-line-clamp:3;-webkit-box-orient:vertical;overflow:hidden;
  }
  .card-foot{
    display:flex;align-items:center;justify-content:space-between;gap:10px;
    margin-top:16px;padding-top:14px;border-top:1px solid var(--line);
    font-size:13px;color:var(--ink-3);
  }
  .center-actions{display:flex;justify-content:center;margin-top:32px;}

  /* ---------- CTA ---------- */
  .cta-section{padding:0 0 96px;}
  .cta-band{
    background:var(--blue-l);border:1px solid #DCE6FF;border-radius:var(--r-lg);
    padding:40px;display:grid;grid-template-columns:1.25fr .75fr;gap:32px;align-items:center;
  }
  .cta-band h2{font-size:26px;font-weight:700;line-height:1.4;}
  .cta-band p{font-size:15px;color:var(--ink-2);margin:10px 0 0;}
  .cta-actions{display:flex;flex-wrap:wrap;gap:12px;justify-content:flex-end;}

  /* ---------- 页脚 ---------- */
  .site-footer{background:var(--ink);color:#fff;}
  .footer-grid{
    display:grid;grid-template-columns:1.4fr 1fr 1fr 1.2fr;gap:32px;
    padding:64px 16px 40px;
  }
  .footer-col h4{font-size:14px;font-weight:600;margin:0 0 16px;color:#fff;}
  .footer-links{list-style:none;padding:0;display:flex;flex-direction:column;gap:10px;}
  .footer-links a,.footer-links span{font-size:14px;color:rgba(255,255,255,.72);}
  .footer-links a:hover{color:#fff;}
  .brand-footer{color:#fff;}
  .brand-footer:hover{color:#fff;}
  .footer-brand p{font-size:14px;line-height:1.85;color:rgba(255,255,255,.68);margin:16px 0 0;max-width:330px;}
  .footer-bottom{
    border-top:1px solid rgba(255,255,255,.08);
    display:flex;flex-wrap:wrap;align-items:center;justify-content:space-between;gap:12px;
    padding:18px 16px;font-size:13px;color:rgba(255,255,255,.5);
  }

  /* ---------- 响应式 ---------- */
  @media (min-width:640px){
    .container-x{padding:0 24px;}
    .footer-grid{padding:64px 24px 40px;}
    .footer-bottom{padding:18px 24px;}
  }
  @media (min-width:1024px){
    .container-x{padding:0 32px;}
    .footer-grid{padding:64px 32px 40px;}
    .footer-bottom{padding:18px 32px;}
  }
  @media (max-width:1279px){
    .post-layout{grid-template-columns:minmax(0,1fr);gap:0;}
    .post-main{max-width:800px;margin:0 auto;width:100%;}
    .toc{display:none;}
    .toc-mobile{display:block;}
  }
  @media (max-width:1023px){
    .main-nav,.header-tools .search-box,.header-tools .tool-link{display:none;}
    .hamburger{display:inline-flex;}
    .rel-grid{grid-template-columns:repeat(2,minmax(0,1fr));}
    .footer-grid{grid-template-columns:1fr 1fr;gap:32px 24px;padding:52px 24px 32px;}
    .footer-brand{grid-column:1 / -1;}
    .cta-band{grid-template-columns:1fr;padding:32px;gap:22px;}
    .cta-actions{justify-content:flex-start;}
    .sec-head h2{font-size:24px;}
    .rel-section{padding-bottom:64px;}
    .cta-section{padding-bottom:64px;}
    .post-layout{padding-bottom:64px;}
  }
  @media (max-width:767px){
    .header-inner{height:60px;gap:12px;}
    .brand{font-size:16px;}
    .post-head h1{font-size:26px;}
    .article-body{padding:28px 22px;}
    .article-body p,.article-body li{font-size:16px;line-height:1.9;}
    .article-body h2{font-size:22px;margin-top:34px;}
    .article-body h3{font-size:18px;}
    .pn-grid{grid-template-columns:1fr;}
    .rel-grid{grid-template-columns:1fr;}
    .footer-grid{grid-template-columns:1fr;padding:44px 22px 28px;}
    .footer-bottom{padding:16px 22px;}
  }
  @media (max-width:639px){
    .header-tools .btn-primary{display:none;}
    .crumbs{font-size:13px;padding-top:18px;}
    .cta-band{padding:24px 20px;border-radius:var(--r-card);}
    .cta-band h2{font-size:21px;}
    .btn-lg{height:46px;padding:0 20px;font-size:15px;}
    .cta-actions{flex-direction:column;}
    .cta-actions .btn{width:100%;}
    .article-body{padding:22px 18px;border-radius:var(--r-sm);}
    .sec-head{flex-direction:column;align-items:flex-start;gap:8px;}
  }

/* roulang page: category2 */
:root{
  --brand:#2456F0;
  --brand-deep:#1D45C9;
  --brand-soft:#EAF0FF;
  --cyan:#12C8C8;
  --orange:#FF6A1F;
  --orange-soft:#FFF1E8;
  --ink:#0E1726;
  --ink-2:#3C4A5F;
  --ink-3:#7A8798;
  --line:#E4EAF3;
  --bg:#F5F7FB;
  --card:#FFFFFF;
  --r-s:8px;
  --r-m:12px;
  --r-card:16px;
  --r-lg:24px;
  --r-pill:999px;
  --sh-1:0 1px 2px rgba(16,32,64,.06);
  --sh-2:0 8px 24px -8px rgba(23,52,120,.14);
  --sh-3:0 16px 40px -12px rgba(23,52,120,.18);
  --ease:cubic-bezier(.22,.61,.36,1);
}
*,*::before,*::after{box-sizing:border-box}
html{-webkit-text-size-adjust:100%;scroll-behavior:smooth}
body{
  margin:0;
  font-family:"PingFang SC","HarmonyOS Sans SC","Microsoft YaHei",system-ui,-apple-system,"Segoe UI",sans-serif;
  font-size:16px;
  line-height:1.85;
  color:var(--ink);
  background:var(--bg);
  -webkit-font-smoothing:antialiased;
}
img{max-width:100%;display:block;border-style:none}
a{color:var(--brand);text-decoration:none;transition:color .18s var(--ease)}
a:hover{color:var(--brand-deep)}
button,input,select,textarea{font:inherit;color:inherit}
button{cursor:pointer;background:none;border:none}
h1,h2,h3,h4,p,ul,ol,figure{margin:0}
ul,ol{padding:0;list-style:none}
:focus-visible{outline:2px solid rgba(36,86,240,.45);outline-offset:2px;border-radius:4px}

.container-x{
  width:100%;
  max-width:1200px;
  margin:0 auto;
  padding:0 16px;
}
@media(min-width:640px){.container-x{padding:0 24px}}
@media(min-width:1024px){.container-x{padding:0 32px}}

/* ============ header ============ */
.site-header{
  position:sticky;
  top:0;
  z-index:50;
  background:rgba(255,255,255,.92);
  backdrop-filter:blur(12px);
  -webkit-backdrop-filter:blur(12px);
  border-bottom:1px solid var(--line);
}
.header-inner{
  display:flex;
  align-items:center;
  gap:20px;
  min-height:64px;
}
.brand{
  display:inline-flex;
  align-items:center;
  gap:10px;
  flex-shrink:0;
  color:var(--ink);
}
.brand:hover{color:var(--ink)}
.brand-mark{
  width:30px;height:30px;
  border-radius:9px;
  background:linear-gradient(135deg,#3358f4,#2456F0 60%,#1D45C9);
  display:inline-flex;align-items:center;justify-content:center;
  box-shadow:0 3px 10px rgba(36,86,240,.28), inset 0 0 0 1px rgba(255,255,255,.28);
  position:relative;
}
.brand-mark i{
  width:9px;height:9px;border-radius:50%;background:#fff;display:block;
  box-shadow:0 0 0 3px rgba(255,255,255,.22);
}
.brand-name{font-size:17px;font-weight:700;letter-spacing:0;white-space:nowrap}
.main-nav{
  display:none;
  align-items:center;
  gap:4px;
  margin-left:8px;
}
@media(min-width:1024px){.main-nav{display:flex}}
.nav-link{
  position:relative;
  display:inline-block;
  padding:8px 10px;
  font-size:15px;
  font-weight:500;
  color:var(--ink-2);
  border-radius:var(--r-s);
  white-space:nowrap;
  transition:color .18s var(--ease),background .18s var(--ease);
}
.nav-link:hover{color:var(--brand);background:var(--brand-soft)}
.nav-link.is-active{color:var(--brand);font-weight:600}
.nav-link.is-active::after{
  content:"";
  position:absolute;
  left:10px;right:10px;bottom:2px;
  height:2px;border-radius:2px;background:var(--brand);
}
.header-right{
  display:flex;
  align-items:center;
  gap:10px;
  margin-left:auto;
}
.cmd-search{
  display:none;
  align-items:center;
  gap:8px;
  width:240px;
  height:40px;
  padding:0 12px;
  border-radius:var(--r-m);
  background:var(--bg);
  border:1px solid transparent;
  transition:background .18s var(--ease),border-color .18s var(--ease),box-shadow .18s var(--ease);
}
@media(min-width:1180px){.cmd-search{display:flex}}
.cmd-search:focus-within{
  background:#fff;
  border-color:var(--brand);
  box-shadow:0 0 0 4px rgba(36,86,240,.10);
}
.cmd-search i{font-size:13px;color:var(--ink-3)}
.cmd-search input{
  flex:1;min-width:0;
  border:none;background:transparent;outline:none;
  font-size:14px;color:var(--ink);
}
.cmd-search input::placeholder{color:var(--ink-3)}
.kbd{
  flex-shrink:0;
  font-size:11px;
  line-height:1;
  padding:4px 6px;
  border-radius:6px;
  background:#fff;
  border:1px solid var(--line);
  color:var(--ink-3);
  font-variant-numeric:tabular-nums;
}
.header-quick{
  display:none;
  font-size:14px;
  color:var(--ink-2);
  padding:6px 8px;
  border-radius:var(--r-s);
}
@media(min-width:768px){.header-quick{display:inline-block}}
.header-quick:hover{color:var(--brand);background:var(--brand-soft)}
.hamburger{
  display:inline-flex;
  align-items:center;
  justify-content:center;
  width:40px;height:40px;
  border-radius:var(--r-m);
  border:1px solid var(--line);
  background:#fff;
  color:var(--ink);
}
@media(min-width:1024px){.hamburger{display:none}}
.hamburger:hover{border-color:rgba(36,86,240,.35);color:var(--brand)}

/* ============ 按钮 ============ */
.btn{
  display:inline-flex;
  align-items:center;
  justify-content:center;
  gap:8px;
  height:48px;
  padding:0 24px;
  border-radius:var(--r-m);
  font-size:15px;
  font-weight:600;
  white-space:nowrap;
  transition:transform .18s var(--ease),background .18s var(--ease),color .18s var(--ease),box-shadow .18s var(--ease),border-color .18s var(--ease);
}
.btn i{font-size:13px;transition:transform .18s var(--ease)}
.btn-primary{background:var(--brand);color:#fff;box-shadow:var(--sh-1)}
.btn-primary:hover{background:var(--brand-deep);color:#fff;transform:translateY(-1px);box-shadow:var(--sh-2)}
.btn-primary:active{transform:translateY(0);box-shadow:var(--sh-1)}
.btn-ghost{background:#fff;color:var(--ink);border:1px solid var(--line)}
.btn-ghost:hover{color:var(--brand);border-color:rgba(36,86,240,.35);transform:translateY(-1px);box-shadow:var(--sh-1)}
.btn-ghost:active{transform:translateY(0)}
.btn-accent{background:var(--orange);color:#fff}
.btn-accent:hover{background:#EA5C13;color:#fff;transform:translateY(-1px);box-shadow:var(--sh-2)}
.btn-accent:active{transform:translateY(0)}
.btn-sm{height:40px;padding:0 16px;font-size:14px;border-radius:var(--r-m)}
.btn-link{
  display:inline-flex;align-items:center;gap:6px;
  font-size:15px;font-weight:600;color:var(--brand);
  padding:6px 0;
}
.btn-link:hover{color:var(--brand-deep)}
.btn-link:hover i{transform:translateX(2px)}

/* ============ 徽章 ============ */
.badge{
  display:inline-flex;
  align-items:center;
  gap:6px;
  height:24px;
  padding:0 10px;
  border-radius:var(--r-pill);
  font-size:12px;
  font-weight:600;
  line-height:1;
}
.badge-cat{background:var(--brand-soft);color:var(--brand)}
.badge-state{background:rgba(18,200,200,.12);color:#0E9E9E}
.badge-state .dot{
  width:6px;height:6px;border-radius:50%;background:var(--cyan);
  animation:pulse 1.8s infinite;
}
@keyframes pulse{
  0%{box-shadow:0 0 0 0 rgba(18,200,200,.55)}
  70%{box-shadow:0 0 0 7px rgba(18,200,200,0)}
  100%{box-shadow:0 0 0 0 rgba(18,200,200,0)}
}
.badge-time{background:var(--orange-soft);color:var(--orange)}

/* ============ Hero ============ */
.page-hero{
  position:relative;
  background-color:#16233A;
  background-image:url('/assets/images/backpic/back-2.png');
  background-size:cover;
  background-position:center;
  overflow:hidden;
}
.hero-overlay{
  position:absolute;inset:0;
  background:linear-gradient(100deg,rgba(10,20,40,.90) 0%,rgba(12,26,54,.78) 46%,rgba(18,38,78,.58) 100%);
}
.hero-grid-tex{
  position:absolute;inset:0;
  background-image:linear-gradient(rgba(255,255,255,.05) 1px,transparent 1px),linear-gradient(90deg,rgba(255,255,255,.05) 1px,transparent 1px);
  background-size:44px 44px;
  opacity:.5;
  pointer-events:none;
}
.hero-inner{
  position:relative;
  z-index:2;
  padding-top:42px;
  padding-bottom:52px;
}
@media(min-width:1024px){.hero-inner{padding-top:56px;padding-bottom:68px}}
.breadcrumb{
  display:flex;
  align-items:center;
  gap:8px;
  font-size:14px;
  color:rgba(255,255,255,.68);
  margin-bottom:20px;
  flex-wrap:wrap;
}
.breadcrumb a{color:rgba(255,255,255,.68)}
.breadcrumb a:hover{color:#fff}
.breadcrumb em{font-style:normal;color:#fff;font-weight:600}
.breadcrumb span{color:rgba(255,255,255,.38)}
.hero-badges{display:flex;flex-wrap:wrap;gap:8px;margin-bottom:18px}
.hero-badges .badge-cat{background:rgba(255,255,255,.16);color:#fff}
.hero-badges .badge-state{background:rgba(18,200,200,.20);color:#9FF3F3}
.hero-title{
  font-size:clamp(30px,4.4vw,48px);
  font-weight:700;
  line-height:1.22;
  letter-spacing:0;
  color:#fff;
  max-width:16em;
}
.hero-sub{
  margin-top:16px;
  font-size:16px;
  line-height:1.8;
  color:rgba(255,255,255,.82);
  max-width:34em;
}
@media(min-width:640px){.hero-sub{font-size:17px}}
.hero-actions{
  display:flex;
  flex-wrap:wrap;
  gap:12px;
  margin-top:28px;
}
.hero-actions .btn-ghost{
  background:rgba(255,255,255,.10);
  border-color:rgba(255,255,255,.30);
  color:#fff;
}
.hero-actions .btn-ghost:hover{
  background:rgba(255,255,255,.18);
  border-color:rgba(255,255,255,.60);
  color:#fff;
}
.hero-stats{
  display:flex;
  flex-wrap:wrap;
  gap:0;
  margin-top:36px;
  border-top:1px solid rgba(255,255,255,.16);
  padding-top:20px;
}
.hero-stat{
  padding-right:32px;
  margin-right:32px;
  border-right:1px solid rgba(255,255,255,.16);
}
.hero-stat:last-child{border-right:none;margin-right:0;padding-right:0}
.hero-stat b{
  display:block;
  font-size:24px;
  font-weight:700;
  color:#fff;
  font-variant-numeric:tabular-nums;
  line-height:1.3;
}
.hero-stat span{font-size:13px;color:rgba(255,255,255,.66)}

/* ============ 通用板块 ============ */
.section{padding:48px 0}
@media(min-width:768px){.section{padding:64px 0}}
@media(min-width:1024px){.section{padding:96px 0}}
.section-alt{background:#fff;border-top:1px solid var(--line);border-bottom:1px solid var(--line)}
.sec-head{margin-bottom:28px}
@media(min-width:1024px){.sec-head{margin-bottom:40px}}
.sec-kicker{
  display:inline-flex;align-items:center;gap:8px;
  font-size:13px;font-weight:600;color:var(--brand);
  margin-bottom:10px;
}
.sec-kicker::before{content:"";width:14px;height:2px;border-radius:2px;background:var(--brand)}
.sec-h2{
  font-size:clamp(22px,2.6vw,30px);
  font-weight:700;
  line-height:1.35;
  letter-spacing:0;
}
.sec-p{
  margin-top:12px;
  font-size:15px;
  line-height:1.9;
  color:var(--ink-2);
  max-width:52em;
}

/* ============ 侧栏 + 正文 ============ */
.layout-side{display:grid;gap:28px;grid-template-columns:minmax(0,1fr)}
@media(min-width:1280px){
  .layout-side{grid-template-columns:240px minmax(0,1fr);gap:48px;align-items:start}
}
.toc-side{
  background:#fff;
  border:1px solid var(--line);
  border-radius:var(--r-card);
  padding:16px;
  box-shadow:var(--sh-1);
}
@media(min-width:1280px){
  .toc-side{position:sticky;top:88px;padding:20px}
}
.toc-title{
  font-size:13px;
  font-weight:700;
  color:var(--ink-3);
  letter-spacing:.04em;
  margin-bottom:12px;
}
.toc-list{display:flex;gap:8px;overflow-x:auto;padding-bottom:4px;-webkit-overflow-scrolling:touch}
@media(min-width:1280px){
  .toc-list{display:block;overflow:visible;padding-bottom:0}
}
.toc-list li{flex:0 0 auto}
@media(min-width:1280px){.toc-list li{margin-bottom:2px}}
.toc-link{
  display:block;
  padding:7px 12px;
  border-radius:var(--r-pill);
  background:var(--bg);
  font-size:14px;
  font-weight:500;
  color:var(--ink-2);
  white-space:nowrap;
  transition:background .18s var(--ease),color .18s var(--ease);
}
@media(min-width:1280px){
  .toc-link{
    border-radius:var(--r-s);
    background:transparent;
    padding:9px 10px 9px 14px;
    white-space:normal;
    position:relative;
  }
}
.toc-link:hover{background:var(--brand-soft);color:var(--brand)}
.toc-link.is-current{background:var(--brand-soft);color:var(--brand);font-weight:600}
@media(min-width:1280px){
  .toc-link.is-current::before{
    content:"";position:absolute;left:0;top:9px;bottom:9px;width:2px;border-radius:2px;background:var(--brand);
  }
}

.content-section{
  background:#fff;
  border:1px solid var(--line);
  border-radius:var(--r-card);
  padding:24px 20px;
  box-shadow:var(--sh-1);
  scroll-margin-top:88px;
}
@media(min-width:768px){.content-section{padding:32px}}
@media(min-width:1024px){.content-section{padding:40px 44px}}
.content-section + .content-section{margin-top:20px}
.content-section h2{
  font-size:clamp(20px,2.2vw,24px);
  font-weight:700;
  line-height:1.4;
  padding-left:14px;
  position:relative;
}
.content-section h2::before{
  content:"";position:absolute;left:0;top:.28em;bottom:.28em;width:3px;border-radius:3px;background:var(--brand);
}
.content-section p{
  margin-top:16px;
  font-size:16px;
  line-height:1.95;
  color:var(--ink-2);
}
.entry-list{margin-top:22px;border-top:1px solid var(--line)}
.entry{
  display:flex;
  gap:14px;
  padding:18px 0;
  border-bottom:1px solid var(--line);
}
.entry:last-child{border-bottom:none;padding-bottom:4px}
.entry-no{
  flex-shrink:0;
  font-size:13px;
  font-weight:700;
  color:var(--brand);
  font-variant-numeric:tabular-nums;
  letter-spacing:.02em;
  padding-top:3px;
  min-width:26px;
}
.entry-body h3{
  font-size:17px;
  font-weight:600;
  line-height:1.5;
  color:var(--ink);
}
.entry-body p{
  margin-top:6px;
  font-size:15px;
  line-height:1.85;
  color:var(--ink-2);
}
.plain-list{margin-top:20px;display:grid;gap:10px}
.plain-list li{
  position:relative;
  padding-left:20px;
  font-size:15px;
  line-height:1.85;
  color:var(--ink-2);
}
.plain-list li::before{
  content:"";position:absolute;left:0;top:.62em;width:7px;height:7px;border-radius:2px;background:var(--brand);
}
.note-box{
  margin-top:22px;
  background:var(--brand-soft);
  border-left:3px solid var(--brand);
  border-radius:var(--r-m);
  padding:16px 18px;
  font-size:15px;
  line-height:1.85;
  color:var(--ink-2);
}

/* ============ 对照区 ============ */
.compare{
  border:1px solid var(--line);
  border-radius:var(--r-card);
  overflow:hidden;
  background:#fff;
  box-shadow:var(--sh-1);
}
.compare-row{
  display:grid;
  grid-template-columns:1fr 1fr;
  gap:12px;
  padding:16px 18px;
  font-size:15px;
}
@media(min-width:768px){
  .compare-row{grid-template-columns:1.1fr 1.4fr 1.4fr;gap:20px;padding:18px 24px}
}
.compare-row > div:first-child{display:none}
@media(min-width:768px){.compare-row > div:first-child{display:block}}
.compare-row:nth-child(odd){background:var(--bg)}
.compare-row.compare-head{
  background:var(--brand-soft);
  font-weight:700;
  color:var(--brand);
  font-size:14px;
  letter-spacing:.02em;
}
.compare-row.compare-head > div:first-child{color:var(--brand)}
.compare-row > div:first-child{color:var(--ink);font-weight:600}
.compare-row > div{color:var(--ink-2);line-height:1.75}
.compare-cell-label{
  display:block;
  font-size:12px;
  color:var(--ink-3);
  font-weight:600;
  margin-bottom:4px;
}
@media(min-width:768px){.compare-cell-label{display:none}}
.compare-legend{
  margin-top:16px;
  font-size:13px;
  color:var(--ink-3);
}

/* ============ 封面卡 ============ */
.card-grid{
  display:grid;
  gap:20px;
  grid-template-columns:minmax(0,1fr);
}
@media(min-width:640px){.card-grid{grid-template-columns:repeat(2,minmax(0,1fr))}}
@media(min-width:1024px){.card-grid{grid-template-columns:repeat(3,minmax(0,1fr))}}
.info-card{
  background:#fff;
  border:1px solid var(--line);
  border-radius:var(--r-card);
  overflow:hidden;
  box-shadow:var(--sh-1);
  transition:transform .18s var(--ease),box-shadow .18s var(--ease),border-color .18s var(--ease);
  display:flex;
  flex-direction:column;
}
.info-card:hover{
  transform:translateY(-4px);
  box-shadow:var(--sh-2);
  border-color:rgba(36,86,240,.35);
}
.info-card figure{
  aspect-ratio:16/9;
  overflow:hidden;
  background:var(--bg);
}
.info-card figure img{
  width:100%;height:100%;object-fit:cover;
  transition:transform .35s var(--ease);
}
.info-card:hover figure img{transform:scale(1.04)}
.info-card .card-body{padding:20px;display:flex;flex-direction:column;flex:1}
.info-card h3{
  font-size:18px;
  font-weight:600;
  line-height:1.5;
  margin-top:10px;
}
.info-card p{
  margin-top:10px;
  font-size:14.5px;
  line-height:1.8;
  color:var(--ink-2);
  flex:1;
}
.info-card .card-foot{
  margin-top:16px;
  padding-top:14px;
  border-top:1px solid var(--line);
  display:flex;
  align-items:center;
  justify-content:space-between;
  font-size:13px;
  color:var(--ink-3);
}
.info-card .card-foot i{color:var(--brand);font-size:12px}

/* ============ FAQ ============ */
.faq-wrap{max-width:880px;margin:0 auto}
.faq-item{
  background:#fff;
  border:1px solid var(--line);
  border-radius:var(--r-m);
  margin-bottom:12px;
  overflow:hidden;
  transition:border-color .18s var(--ease),box-shadow .18s var(--ease);
}
.faq-item:hover{border-color:rgba(36,86,240,.35)}
.faq-item.is-open{box-shadow:var(--sh-2);border-color:rgba(36,86,240,.35)}
.faq-q{
  width:100%;
  display:flex;
  align-items:center;
  justify-content:space-between;
  gap:16px;
  padding:18px 20px;
  text-align:left;
  font-size:16px;
  font-weight:600;
  color:var(--ink);
  position:relative;
}
.faq-q::before{
  content:"";position:absolute;left:0;top:14px;bottom:14px;width:3px;border-radius:0 3px 3px 0;
  background:var(--brand);opacity:0;transition:opacity .18s var(--ease);
}
.faq-item.is-open .faq-q::before{opacity:1}
.faq-q i{
  flex-shrink:0;
  font-size:13px;
  color:var(--brand);
  transition:transform .22s var(--ease);
}
.faq-item.is-open .faq-q i{transform:rotate(90deg)}
.faq-a{
  max-height:0;
  overflow:hidden;
  transition:max-height .28s var(--ease);
}
.faq-a p{
  padding:0 20px 20px;
  font-size:15px;
  line-height:1.9;
  color:var(--ink-2);
}

/* ============ CTA ============ */
.cta-band{
  background:var(--brand-soft);
  border-top:1px solid var(--line);
  border-bottom:1px solid var(--line);
  padding:48px 0;
}
@media(min-width:1024px){.cta-band{padding:72px 0}}
.cta-inner{
  display:grid;
  gap:28px;
  align-items:center;
}
@media(min-width:1024px){.cta-inner{grid-template-columns:1.3fr 1fr;gap:56px}}
.cta-inner h2{
  font-size:clamp(22px,2.6vw,30px);
  font-weight:700;
  line-height:1.35;
}
.cta-inner p{
  margin-top:12px;
  font-size:15.5px;
  line-height:1.9;
  color:var(--ink-2);
  max-width:44em;
}
.cta-actions{
  display:flex;
  flex-wrap:wrap;
  gap:12px;
  margin-top:24px;
}
.cta-panel{
  background:#fff;
  border:1px solid var(--line);
  border-radius:var(--r-card);
  padding:24px;
  box-shadow:var(--sh-2);
}
.cta-panel h3{font-size:17px;font-weight:700}
.cta-panel ul{margin-top:16px;display:grid;gap:12px}
.cta-panel li{
  display:flex;
  gap:10px;
  font-size:15px;
  line-height:1.7;
  color:var(--ink-2);
}
.cta-panel li i{color:var(--cyan);font-size:14px;margin-top:5px}
.cta-panel .panel-foot{
  margin-top:20px;
  padding-top:16px;
  border-top:1px solid var(--line);
  font-size:13px;
  color:var(--ink-3);
  line-height:1.7;
}

/* ============ footer ============ */
.site-footer{
  background:#0E1726;
  color:#fff;
  padding-top:52px;
  margin-top:0;
}
.footer-grid{
  display:grid;
  gap:32px;
  padding-bottom:40px;
}
@media(min-width:640px){.footer-grid{grid-template-columns:repeat(2,minmax(0,1fr))}}
@media(min-width:1024px){.footer-grid{grid-template-columns:1.5fr 1fr 1fr 1fr;gap:40px}}
.brand-footer{color:#fff}
.brand-footer:hover{color:#fff}
.footer-brand p{
  margin-top:14px;
  font-size:14px;
  line-height:1.8;
  color:rgba(255,255,255,.62);
  max-width:26em;
}
.footer-col h4{
  font-size:14px;
  font-weight:600;
  color:#fff;
  margin-bottom:14px;
}
.footer-links li{margin-bottom:10px}
.footer-links a,.footer-links span{
  font-size:14px;
  color:rgba(255,255,255,.72);
  transition:color .18s var(--ease);
}
.footer-links a:hover{color:#fff}
.footer-bottom{
  border-top:1px solid rgba(255,255,255,.08);
  padding-top:20px;
  padding-bottom:28px;
  display:flex;
  flex-wrap:wrap;
  gap:8px 24px;
  justify-content:space-between;
  font-size:13px;
  color:rgba(255,255,255,.5);
}

/* ============ 移动抽屉 ============ */
.drawer-mask{
  position:fixed;inset:0;
  background:rgba(14,23,38,.45);
  opacity:0;visibility:hidden;
  transition:opacity .22s var(--ease),visibility .22s var(--ease);
  z-index:60;
}
.drawer-mask.is-open{opacity:1;visibility:visible}
.mobile-drawer{
  position:fixed;
  top:0;right:0;
  height:100%;
  width:min(86vw,340px);
  background:#fff;
  z-index:70;
  transform:translateX(102%);
  transition:transform .26s var(--ease);
  display:flex;
  flex-direction:column;
  padding:20px;
  overflow-y:auto;
  box-shadow:-16px 0 40px -18px rgba(14,23,38,.4);
}
.mobile-drawer.is-open{transform:translateX(0)}
.drawer-head{
  display:flex;
  align-items:center;
  justify-content:space-between;
  padding-bottom:16px;
  border-bottom:1px solid var(--line);
}
.drawer-close{
  width:36px;height:36px;
  border-radius:var(--r-s);
  border:1px solid var(--line);
  display:inline-flex;align-items:center;justify-content:center;
  color:var(--ink-2);
}
.drawer-close:hover{color:var(--brand);border-color:rgba(36,86,240,.35)}
.drawer-nav{margin-top:16px;display:grid;gap:4px}
.drawer-nav a{
  display:block;
  padding:12px 12px;
  border-radius:var(--r-s);
  font-size:15px;
  font-weight:500;
  color:var(--ink-2);
}
.drawer-nav a:hover{background:var(--brand-soft);color:var(--brand)}
.drawer-nav a.is-active{background:var(--brand-soft);color:var(--brand);font-weight:600}
.drawer-search{
  margin-top:18px;
  display:flex;
  align-items:center;
  gap:8px;
  height:44px;
  padding:0 12px;
  border-radius:var(--r-m);
  background:var(--bg);
  border:1px solid transparent;
}
.drawer-search:focus-within{background:#fff;border-color:var(--brand);box-shadow:0 0 0 4px rgba(36,86,240,.10)}
.drawer-search input{flex:1;min-width:0;border:none;background:transparent;outline:none;font-size:14px}
.drawer-search i{color:var(--ink-3);font-size:13px}
.drawer-cta{margin-top:20px;width:100%}
.drawer-note{
  margin-top:auto;
  padding-top:24px;
  font-size:13px;
  line-height:1.8;
  color:var(--ink-3);
}

@media (prefers-reduced-motion:reduce){
  *{animation-duration:.001ms !important;transition-duration:.001ms !important;scroll-behavior:auto !important}
}

/* roulang page: category3 */
:root{
  --brand:#2456F0;
  --brand-dark:#1D45C9;
  --brand-soft:#EAF0FF;
  --cyan:#12C8C8;
  --accent:#FF6A1F;
  --accent-soft:#FFF1E8;
  --ink:#0E1726;
  --ink-2:#3C4A5F;
  --ink-3:#7A8798;
  --line:#E4EAF3;
  --bg:#F5F7FB;
  --card:#FFFFFF;
  --r-s:8px;
  --r-m:12px;
  --r-c:16px;
  --r-l:24px;
  --sh-1:0 1px 2px rgba(16,32,64,.06);
  --sh-2:0 8px 24px -8px rgba(23,52,120,.14);
  --sh-3:0 16px 40px -12px rgba(23,52,120,.18);
}
*,*::before,*::after{box-sizing:border-box}
html{-webkit-text-size-adjust:100%;scroll-behavior:smooth}
body{
  margin:0;
  font-family:"PingFang SC","HarmonyOS Sans SC","Microsoft YaHei",system-ui,-apple-system,"Segoe UI",sans-serif;
  font-size:16px;
  line-height:1.85;
  color:var(--ink);
  background:var(--bg);
  font-variant-numeric:tabular-nums;
}
img{display:block;max-width:100%}
a{color:var(--brand);text-decoration:none}
h1,h2,h3,h4{margin:0;letter-spacing:0}
p{margin:0}
ul{margin:0;padding:0;list-style:none}
button{font-family:inherit}
a:focus-visible,button:focus-visible,input:focus-visible,select:focus-visible,textarea:focus-visible{
  outline:2px solid rgba(36,86,240,.45);
  outline-offset:2px;
  border-radius:6px;
}
::selection{background:rgba(36,86,240,.16)}

/* 容器 */
.container-x{
  width:100%;
  max-width:1200px;
  margin:0 auto;
  padding-left:16px;
  padding-right:16px;
}
@media (min-width:640px){.container-x{padding-left:24px;padding-right:24px}}
@media (min-width:1024px){.container-x{padding-left:32px;padding-right:32px}}

/* 顶部导航 */
.site-header{
  position:sticky;
  top:0;
  z-index:50;
  background:rgba(255,255,255,.92);
  backdrop-filter:blur(12px);
  -webkit-backdrop-filter:blur(12px);
  border-bottom:1px solid var(--line);
}
.header-inner{
  display:flex;
  align-items:center;
  gap:20px;
  height:64px;
}
.brand{
  display:inline-flex;
  align-items:center;
  gap:10px;
  flex-shrink:0;
}
.brand-mark{
  width:30px;
  height:30px;
  border-radius:9px;
  background:linear-gradient(140deg,var(--brand),var(--brand-dark));
  display:grid;
  place-items:center;
  position:relative;
  flex-shrink:0;
}
.brand-mark::before{
  content:"";
  position:absolute;
  width:14px;
  height:14px;
  border-radius:4px;
  border:1.5px solid rgba(255,255,255,.55);
}
.brand-mark i{
  width:8px;
  height:8px;
  border-radius:50%;
  background:#fff;
  display:block;
}
.brand-name{
  font-size:18px;
  font-weight:700;
  color:var(--ink);
  letter-spacing:0;
  line-height:1;
}
.main-nav{
  display:flex;
  align-items:center;
  gap:2px;
  margin-left:6px;
}
.nav-link{
  position:relative;
  display:inline-block;
  padding:8px 12px;
  font-size:15px;
  font-weight:500;
  color:var(--ink-2);
  border-radius:var(--r-s);
  transition:color .18s ease-out,background .18s ease-out;
  white-space:nowrap;
}
.nav-link:hover{color:var(--brand);background:var(--brand-soft)}
.nav-link.is-active{color:var(--brand)}
.nav-link.is-active::after{
  content:"";
  position:absolute;
  left:12px;
  right:12px;
  bottom:2px;
  height:2px;
  border-radius:2px;
  background:var(--brand);
}
.header-tools{
  margin-left:auto;
  display:flex;
  align-items:center;
  gap:12px;
}
.command-search{
  position:relative;
  display:flex;
  align-items:center;
  gap:8px;
  width:240px;
  height:40px;
  padding:0 10px;
  background:var(--bg);
  border:1px solid var(--line);
  border-radius:var(--r-m);
  transition:border-color .18s ease-out,background .18s ease-out,box-shadow .18s ease-out;
}
.command-search:focus-within{
  background:#fff;
  border-color:var(--brand);
  box-shadow:0 0 0 4px rgba(36,86,240,.08);
}
.command-search svg{flex-shrink:0;color:var(--ink-3)}
.command-search input{
  flex:1;
  min-width:0;
  border:0;
  background:transparent;
  outline:none;
  font-size:14px;
  color:var(--ink);
}
.command-search input::placeholder{color:var(--ink-3)}
.kbd{
  font-size:11px;
  line-height:1.4;
  color:var(--ink-3);
  background:#fff;
  border:1px solid var(--line);
  border-radius:6px;
  padding:1px 6px;
  white-space:nowrap;
}
.quick-link{
  font-size:14px;
  font-weight:500;
  color:var(--ink-2);
  transition:color .18s ease-out;
  white-space:nowrap;
}
.quick-link:hover{color:var(--brand)}
.hamburger{
  display:none;
  width:40px;
  height:40px;
  align-items:center;
  justify-content:center;
  border:1px solid var(--line);
  border-radius:var(--r-m);
  background:#fff;
  color:var(--ink);
  cursor:pointer;
  transition:border-color .18s ease-out,color .18s ease-out;
}
.hamburger:hover{border-color:var(--brand);color:var(--brand)}

/* 按钮 */
.btn{
  display:inline-flex;
  align-items:center;
  justify-content:center;
  gap:8px;
  height:48px;
  padding:0 24px;
  border-radius:var(--r-m);
  border:1px solid transparent;
  font-size:15px;
  font-weight:600;
  cursor:pointer;
  transition:background .18s ease-out,color .18s ease-out,border-color .18s ease-out,transform .18s ease-out,box-shadow .18s ease-out;
}
.btn svg{transition:transform .18s ease-out}
.btn:hover svg{transform:translateX(2px)}
.btn-primary{background:var(--brand);color:#fff}
.btn-primary:hover{background:var(--brand-dark);transform:translateY(-1px);box-shadow:var(--sh-2)}
.btn-primary:active{transform:translateY(0);box-shadow:none}
.btn-ghost{background:#fff;color:var(--ink);border-color:var(--line)}
.btn-ghost:hover{border-color:var(--brand);color:var(--brand);transform:translateY(-1px);box-shadow:var(--sh-1)}
.btn-accent{background:var(--accent);color:#fff}
.btn-accent:hover{background:#EA5A12;transform:translateY(-1px);box-shadow:var(--sh-2)}
.btn-sm{height:40px;padding:0 18px;font-size:14px}
.btn-on-dark{background:#fff;color:var(--ink)}
.btn-on-dark:hover{background:#F2F5FF;transform:translateY(-1px);box-shadow:var(--sh-2)}
.btn-outline-light{background:rgba(255,255,255,.08);color:#fff;border-color:rgba(255,255,255,.42)}
.btn-outline-light:hover{background:rgba(255,255,255,.16);border-color:#fff;transform:translateY(-1px)}
.text-btn{
  display:inline-flex;
  align-items:center;
  gap:6px;
  font-size:15px;
  font-weight:600;
  color:var(--brand);
}
.text-btn:hover{color:var(--brand-dark)}
.text-btn:hover svg{transform:translateX(2px)}
.text-btn svg{transition:transform .18s ease-out}

/* 徽章与标签 */
.badge{
  display:inline-flex;
  align-items:center;
  gap:5px;
  height:24px;
  padding:0 10px;
  border-radius:999px;
  font-size:12px;
  font-weight:600;
  line-height:1;
}
.badge-cat{background:var(--brand-soft);color:var(--brand)}
.badge-time{background:var(--accent-soft);color:var(--accent)}
.badge-state{background:rgba(18,200,200,.12);color:#0B9C9C}
.dot-pulse{
  width:6px;
  height:6px;
  border-radius:50%;
  background:currentColor;
  animation:pulse 1.6s ease-in-out infinite;
}
@keyframes pulse{
  0%,100%{opacity:1;transform:scale(1)}
  50%{opacity:.45;transform:scale(.82)}
}

/* 抽屉 */
.drawer-mask{
  position:fixed;
  inset:0;
  z-index:60;
  background:rgba(14,23,38,.45);
  opacity:0;
  visibility:hidden;
  transition:opacity .25s ease-out,visibility .25s ease-out;
}
.drawer-mask.is-open{opacity:1;visibility:visible}
.drawer{
  position:fixed;
  top:0;
  right:0;
  bottom:0;
  z-index:70;
  width:min(320px,86vw);
  background:#fff;
  box-shadow:var(--sh-3);
  transform:translateX(105%);
  transition:transform .28s ease-out;
  padding:20px;
  overflow-y:auto;
}
.drawer.is-open{transform:translateX(0)}
.drawer-head{
  display:flex;
  align-items:center;
  justify-content:space-between;
  padding-bottom:16px;
  border-bottom:1px solid var(--line);
}
.drawer-close{
  width:36px;
  height:36px;
  border-radius:var(--r-s);
  border:1px solid var(--line);
  background:#fff;
  color:var(--ink-2);
  cursor:pointer;
  display:grid;
  place-items:center;
}
.drawer-close:hover{border-color:var(--brand);color:var(--brand)}
.drawer-nav{display:flex;flex-direction:column;gap:4px;margin:18px 0}
.drawer-nav a{
  padding:12px 14px;
  border-radius:var(--r-m);
  font-size:15px;
  font-weight:500;
  color:var(--ink-2);
  transition:background .18s ease-out,color .18s ease-out;
}
.drawer-nav a:hover{background:var(--brand-soft);color:var(--brand)}
.drawer-nav a.is-active{background:var(--brand-soft);color:var(--brand);font-weight:600}
.drawer-search{
  display:flex;
  align-items:center;
  gap:8px;
  height:48px;
  padding:0 14px;
  background:var(--bg);
  border:1px solid var(--line);
  border-radius:var(--r-m);
  margin-bottom:16px;
}
.drawer-search input{flex:1;min-width:0;border:0;background:transparent;outline:none;font-size:15px;color:var(--ink)}
.drawer .btn{width:100%}
@media (max-width:1023px){
  .main-nav,.command-search,.quick-link{display:none}
  .hamburger{display:inline-flex}
  .header-inner{gap:12px}
}

/* 面包屑 */
.crumb{
  display:flex;
  align-items:center;
  gap:8px;
  font-size:14px;
  color:var(--ink-3);
  margin-bottom:16px;
  flex-wrap:wrap;
}
.crumb a{color:rgba(255,255,255,.78)}
.crumb a:hover{color:#fff;text-decoration:underline;text-underline-offset:4px;text-decoration-thickness:2px}
.crumb .sep{color:rgba(255,255,255,.45)}
.crumb .now{color:#fff;font-weight:600}

/* 分类页横幅 */
.cat-hero{
  position:relative;
  overflow:hidden;
  color:#fff;
  background:#0E1726 url('/assets/images/backpic/back-2.png') center/cover no-repeat;
  padding:44px 0 56px;
}
.cat-hero::after{
  content:"";
  position:absolute;
  inset:0;
  background:linear-gradient(104deg,rgba(14,23,38,.90) 0%,rgba(14,23,38,.72) 46%,rgba(29,69,201,.62) 100%);
}
.cat-hero .container-x{position:relative;z-index:1}
.cat-hero h1{
  font-size:clamp(30px,4.4vw,48px);
  font-weight:700;
  line-height:1.22;
  max-width:880px;
}
.cat-hero .hero-sub{
  margin-top:16px;
  font-size:16px;
  line-height:1.8;
  color:rgba(255,255,255,.84);
  max-width:640px;
}
.hero-actions{display:flex;flex-wrap:wrap;gap:12px;margin-top:28px}
.hero-tags{display:flex;flex-wrap:wrap;gap:8px;margin-top:24px}
.hero-tags span{
  font-size:13px;
  padding:5px 12px;
  border-radius:999px;
  border:1px solid rgba(255,255,255,.3);
  background:rgba(255,255,255,.08);
  color:rgba(255,255,255,.9);
}
.hero-meta{
  display:flex;
  flex-wrap:wrap;
  gap:12px 28px;
  margin-top:32px;
  padding-top:22px;
  border-top:1px solid rgba(255,255,255,.16);
}
.hero-meta div{display:flex;align-items:baseline;gap:8px}
.hero-meta b{font-size:24px;font-weight:700;line-height:1.2}
.hero-meta span{font-size:13px;color:rgba(255,255,255,.68)}

/* 板块 */
.section{padding:48px 0}
@media (min-width:640px){.section{padding:64px 0}}
@media (min-width:1024px){.section{padding:96px 0}}
.section-alt{background:#fff}
.section-head{
  display:flex;
  align-items:flex-end;
  justify-content:space-between;
  gap:24px;
  margin-bottom:28px;
  flex-wrap:wrap;
}
.section-head h2{
  font-size:clamp(24px,3vw,32px);
  font-weight:700;
  line-height:1.3;
  position:relative;
  padding-left:16px;
}
.section-head h2::before{
  content:"";
  position:absolute;
  left:0;
  top:6px;
  width:3px;
  height:26px;
  border-radius:2px;
  background:var(--brand);
}
.lead{
  font-size:15px;
  line-height:1.9;
  color:var(--ink-2);
  max-width:720px;
  margin-top:12px;
}

/* 图墙 */
.gallery-grid{
  display:grid;
  grid-template-columns:repeat(3,minmax(0,1fr));
  gap:20px;
}
.gallery-item{
  position:relative;
  border:1px solid var(--line);
  border-radius:var(--r-c);
  overflow:hidden;
  background:#fff;
  box-shadow:var(--sh-1);
  transition:transform .2s ease-out,box-shadow .2s ease-out,border-color .2s ease-out;
}
.gallery-item:hover{
  transform:translateY(-4px);
  box-shadow:var(--sh-2);
  border-color:rgba(36,86,240,.35);
}
.gallery-item figure{
  margin:0;
  aspect-ratio:16/10;
  overflow:hidden;
  background:var(--bg);
}
.gallery-item img{
  width:100%;
  height:100%;
  object-fit:cover;
  transition:transform .45s ease-out;
}
.gallery-item:hover img{transform:scale(1.04)}
.gallery-num{
  position:absolute;
  top:12px;
  left:12px;
  z-index:2;
  font-size:12px;
  font-weight:700;
  letter-spacing:.04em;
  color:#fff;
  background:rgba(14,23,38,.62);
  border:1px solid rgba(255,255,255,.28);
  border-radius:999px;
  padding:3px 10px;
  backdrop-filter:blur(4px);
}
.gallery-cap{
  position:absolute;
  left:0;
  right:0;
  bottom:0;
  padding:26px 16px 14px;
  background:linear-gradient(to top,rgba(14,23,38,.88),rgba(14,23,38,0));
  color:#fff;
  opacity:0;
  transform:translateY(10px);
  transition:opacity .24s ease-out,transform .24s ease-out;
}
.gallery-item:hover .gallery-cap,
.gallery-item:focus-within .gallery-cap{opacity:1;transform:translateY(0)}
.gallery-cap strong{display:block;font-size:16px;font-weight:600;line-height:1.5}
.gallery-cap span{display:block;font-size:13px;line-height:1.7;color:rgba(255,255,255,.82);margin-top:4px}
@media (hover:none){
  .gallery-cap{opacity:1;transform:none;position:relative;background:rgba(14,23,38,.92)}
}
@media (max-width:1023px){
  .gallery-grid{grid-template-columns:repeat(2,minmax(0,1fr))}
}
@media (max-width:639px){
  .gallery-grid{grid-template-columns:1fr}
}

/* 标签云 */
.tag-cloud{display:flex;flex-wrap:wrap;gap:10px}
.tag-pill{
  display:inline-flex;
  align-items:center;
  height:38px;
  padding:0 18px;
  border-radius:999px;
  border:1px solid var(--line);
  background:#fff;
  font-size:14px;
  color:var(--ink-2);
  box-shadow:var(--sh-1);
  transition:border-color .18s ease-out,color .18s ease-out,transform .18s ease-out,box-shadow .18s ease-out;
}
.tag-pill:hover{
  border-color:var(--brand);
  color:var(--brand);
  transform:translateY(-2px);
  box-shadow:var(--sh-2);
}

/* 说明卡 */
.note-block{
  display:grid;
  grid-template-columns:minmax(0,1fr) minmax(0,1fr);
  gap:32px;
  align-items:center;
  background:#fff;
  border:1px solid var(--line);
  border-radius:var(--r-l);
  padding:24px;
  box-shadow:var(--sh-1);
}
.note-block + .note-block{margin-top:24px}
.note-block.is-flip .note-media{order:2}
.note-media{
  border-radius:var(--r-c);
  overflow:hidden;
  border:1px solid var(--line);
  aspect-ratio:4/3;
}
.note-media img{width:100%;height:100%;object-fit:cover}
.note-body h3{
  font-size:20px;
  font-weight:600;
  line-height:1.5;
}
.note-body p{
  margin-top:12px;
  font-size:15px;
  line-height:1.9;
  color:var(--ink-2);
}
.note-list{margin-top:16px;display:flex;flex-direction:column;gap:10px}
.note-list li{
  display:flex;
  gap:10px;
  font-size:14px;
  line-height:1.75;
  color:var(--ink-2);
}
.note-list li::before{
  content:"";
  flex-shrink:0;
  width:8px;
  height:8px;
  margin-top:9px;
  border-radius:2px;
  background:var(--brand-soft);
  border:1px solid var(--brand);
}
@media (max-width:1023px){
  .note-block{grid-template-columns:1fr;gap:20px}
  .note-block.is-flip .note-media{order:0}
}

/* FAQ */
.faq-wrap{max-width:880px}
.faq-item{
  background:#fff;
  border:1px solid var(--line);
  border-radius:var(--r-m);
  margin-bottom:12px;
  overflow:hidden;
  transition:box-shadow .2s ease-out,border-color .2s ease-out;
}
.faq-item:hover{box-shadow:var(--sh-1);border-color:rgba(36,86,240,.25)}
.faq-item.is-open{box-shadow:inset 3px 0 0 var(--brand),var(--sh-1)}
.faq-q{
  width:100%;
  display:flex;
  align-items:center;
  justify-content:space-between;
  gap:16px;
  padding:18px 20px;
  border:0;
  background:transparent;
  text-align:left;
  font-size:16px;
  font-weight:600;
  color:var(--ink);
  cursor:pointer;
}
.faq-icon{
  position:relative;
  flex-shrink:0;
  width:20px;
  height:20px;
  color:var(--brand);
  transition:transform .25s ease-out;
}
.faq-icon::before,
.faq-icon::after{
  content:"";
  position:absolute;
  background:currentColor;
  border-radius:2px;
}
.faq-icon::before{left:3px;right:3px;top:9px;height:2px}
.faq-icon::after{top:3px;bottom:3px;left:9px;width:2px;transition:opacity .2s ease-out}
.faq-item.is-open .faq-icon{transform:rotate(90deg)}
.faq-item.is-open .faq-icon::after{opacity:0}
.faq-a{
  max-height:0;
  overflow:hidden;
  transition:max-height .3s ease-out;
}
.faq-a p{
  padding:0 20px 20px;
  font-size:15px;
  line-height:1.9;
  color:var(--ink-2);
}

/* CTA */
.cta-band{
  background:linear-gradient(120deg,#EAF0FF 0%,#F5F7FB 62%,#FFF1E8 100%);
  border:1px solid var(--line);
  border-radius:var(--r-l);
  padding:32px 24px;
  display:grid;
  grid-template-columns:minmax(0,1.2fr) minmax(0,.8fr);
  gap:28px;
  align-items:center;
}
.cta-band h2{
  font-size:clamp(22px,2.6vw,28px);
  font-weight:700;
  line-height:1.35;
}
.cta-band p{margin-top:12px;font-size:15px;line-height:1.9;color:var(--ink-2)}
.cta-actions{display:flex;flex-wrap:wrap;gap:12px;justify-content:flex-end}
@media (max-width:767px){
  .cta-band{grid-template-columns:1fr;padding:24px 20px}
  .cta-actions{justify-content:flex-start}
}

/* 页脚 */
.site-footer{
  background:var(--ink);
  color:#fff;
  margin-top:0;
}
.footer-grid{
  display:grid;
  grid-template-columns:1.6fr 1fr 1fr 1fr;
  gap:32px;
  padding-top:56px;
  padding-bottom:32px;
}
.footer-col h4{
  font-size:14px;
  font-weight:600;
  color:#fff;
  margin-bottom:16px;
}
.footer-links{display:flex;flex-direction:column;gap:10px}
.footer-links a,
.footer-links span{
  font-size:14px;
  line-height:1.7;
  color:rgba(255,255,255,.72);
  transition:color .18s ease-out;
}
.footer-links a:hover{color:#fff}
.brand-footer .brand-name{color:#fff}
.footer-brand p{
  margin-top:14px;
  font-size:14px;
  line-height:1.85;
  color:rgba(255,255,255,.72);
  max-width:320px;
}
.footer-bottom{
  display:flex;
  flex-wrap:wrap;
  gap:8px 24px;
  justify-content:space-between;
  padding-top:18px;
  padding-bottom:24px;
  border-top:1px solid rgba(255,255,255,.08);
  font-size:13px;
  color:rgba(255,255,255,.5);
}
@media (max-width:1023px){
  .footer-grid{grid-template-columns:1fr 1fr;gap:28px;padding-top:44px}
}
@media (max-width:639px){
  .footer-grid{grid-template-columns:1fr}
}

/* roulang page: category4 */
:root{
    --brand:#2456F0;
    --brand-dark:#1D45C9;
    --brand-light:#EAF0FF;
    --teal:#12C8C8;
    --ember:#FF6A1F;
    --ember-light:#FFF1E8;
    --ink:#0E1726;
    --ink-sub:#3C4A5F;
    --ink-mute:#7A8798;
    --line:#E4EAF3;
    --page:#F5F7FB;
    --white:#FFFFFF;
    --r-sm:8px; --r-md:12px; --r-card:16px; --r-lg:24px; --r-pill:999px;
    --sh-card:0 1px 2px rgba(16,32,64,.06);
    --sh-hover:0 8px 24px -8px rgba(23,52,120,.14);
    --sh-pop:0 16px 40px -12px rgba(23,52,120,.18);
    --ease:cubic-bezier(.22,.61,.36,1);
  }
  *,*::before,*::after{box-sizing:border-box}
  html{-webkit-text-size-adjust:100%;scroll-behavior:smooth}
  body{
    margin:0;
    background:var(--page);
    color:var(--ink);
    font-family:"PingFang SC","HarmonyOS Sans SC","Microsoft YaHei",system-ui,-apple-system,"Segoe UI",sans-serif;
    font-size:16px;
    line-height:1.85;
    letter-spacing:0;
    -webkit-font-smoothing:antialiased;
  }
  img{max-width:100%;display:block}
  a{color:inherit;text-decoration:none}
  button,input,select,textarea{font:inherit;color:inherit}
  ul,ol{margin:0;padding:0;list-style:none}
  h1,h2,h3,h4,p{margin:0}
  :focus-visible{outline:2px solid rgba(36,86,240,.55);outline-offset:2px;border-radius:6px}

  .container-x{max-width:1200px;margin:0 auto;padding:0 32px;width:100%}
  @media(max-width:1023px){.container-x{padding:0 24px}}
  @media(max-width:639px){.container-x{padding:0 16px}}

  /* ---------- 顶部导航 ---------- */
  .site-header{
    position:sticky;top:0;z-index:50;
    background:rgba(255,255,255,.92);
    backdrop-filter:blur(10px);
    -webkit-backdrop-filter:blur(10px);
    border-bottom:1px solid var(--line);
  }
  .header-inner{display:flex;align-items:center;gap:24px;height:64px}
  .brand{display:inline-flex;align-items:center;gap:10px;flex:0 0 auto}
  .brand-mark{
    width:30px;height:30px;border-radius:9px;background:var(--brand);
    display:grid;place-items:center;position:relative;
    box-shadow:0 4px 10px -4px rgba(36,86,240,.55);
  }
  .brand-mark i{width:9px;height:9px;border-radius:50%;background:#fff;display:block}
  .brand-mark::after{
    content:"";position:absolute;inset:5px;border:1px solid rgba(255,255,255,.45);border-radius:6px;
  }
  .brand-name{font-size:17px;font-weight:700;color:var(--ink);white-space:nowrap}
  .main-nav{display:flex;align-items:center;gap:22px;flex:1 1 auto;min-width:0}
  .nav-link{
    position:relative;font-size:15px;font-weight:500;color:var(--ink-sub);
    padding:6px 2px;white-space:nowrap;transition:color .18s var(--ease);
  }
  .nav-link::after{
    content:"";position:absolute;left:0;right:0;bottom:-2px;height:2px;border-radius:2px;
    background:var(--brand);transform:scaleX(0);transform-origin:left;transition:transform .18s var(--ease);
  }
  .nav-link:hover{color:var(--brand)}
  .nav-link:hover::after{transform:scaleX(1)}
  .nav-link.is-active{color:var(--brand);font-weight:600}
  .nav-link.is-active::after{transform:scaleX(1)}
  .header-actions{display:flex;align-items:center;gap:14px;flex:0 0 auto}
  .command-search{
    display:flex;align-items:center;gap:8px;width:240px;height:40px;padding:0 12px;
    background:var(--page);border:1px solid var(--line);border-radius:var(--r-md);
    transition:background .18s var(--ease),border-color .18s var(--ease),box-shadow .18s var(--ease);
  }
  .command-search:focus-within{
    background:#fff;border-color:var(--brand);box-shadow:0 0 0 4px rgba(36,86,240,.1);
  }
  .command-search svg{flex:0 0 auto;color:var(--ink-mute)}
  .command-search input{
    flex:1 1 auto;min-width:0;border:0;background:transparent;outline:none;font-size:14px;
  }
  .command-search input::placeholder{color:var(--ink-mute)}
  .kbd{
    flex:0 0 auto;font-size:11px;line-height:1;padding:4px 6px;border-radius:6px;
    background:#fff;border:1px solid var(--line);color:var(--ink-mute);
  }
  .text-link{
    font-size:14px;font-weight:500;color:var(--ink-sub);white-space:nowrap;
    transition:color .18s var(--ease);
  }
  .text-link:hover{color:var(--brand)}
  .nav-toggle{
    display:none;width:40px;height:40px;border-radius:var(--r-md);
    background:#fff;border:1px solid var(--line);cursor:pointer;
    align-items:center;justify-content:center;
  }
  .nav-toggle span{display:block;width:16px;height:2px;background:var(--ink);border-radius:2px;position:relative}
  .nav-toggle span::before,.nav-toggle span::after{
    content:"";position:absolute;left:0;width:16px;height:2px;background:var(--ink);border-radius:2px;
  }
  .nav-toggle span::before{top:-5px}
  .nav-toggle span::after{top:5px}

  .drawer-mask{
    position:fixed;inset:0;background:rgba(14,23,38,.45);opacity:0;visibility:hidden;
    transition:opacity .2s var(--ease),visibility .2s var(--ease);z-index:60;
  }
  .drawer-mask.is-open{opacity:1;visibility:visible}
  .drawer{
    position:fixed;top:0;right:0;height:100%;width:300px;max-width:86vw;background:#fff;
    z-index:70;transform:translateX(100%);transition:transform .24s var(--ease);
    padding:20px;display:flex;flex-direction:column;gap:18px;overflow-y:auto;
    box-shadow:var(--sh-pop);
  }
  .drawer.is-open{transform:translateX(0)}
  .drawer-head{display:flex;align-items:center;justify-content:space-between}
  .drawer-close{
    width:36px;height:36px;border-radius:var(--r-md);border:1px solid var(--line);background:#fff;
    cursor:pointer;font-size:18px;line-height:1;color:var(--ink-sub);
  }
  .drawer-nav{display:flex;flex-direction:column;gap:4px}
  .drawer-nav a{
    padding:12px 14px;border-radius:var(--r-md);font-size:15px;font-weight:500;color:var(--ink-sub);
    transition:background .18s var(--ease),color .18s var(--ease);
  }
  .drawer-nav a:hover{background:var(--page);color:var(--brand)}
  .drawer-nav a.is-active{background:var(--brand-light);color:var(--brand);font-weight:600}
  .drawer .command-search{width:100%}

  /* ---------- 倒计时条 ---------- */
  .countdown-bar{
    background:linear-gradient(90deg,var(--ember),#FF8A3D);
    color:#fff;
  }
  .countdown-inner{
    display:flex;align-items:center;gap:16px;min-height:44px;padding:6px 0;font-size:14px;
  }
  .countdown-label{font-weight:600;white-space:nowrap}
  .countdown-clock{display:flex;align-items:center;gap:6px;margin-left:auto}
  .cd-unit{display:flex;align-items:center;gap:6px}
  .cd-num{
    width:32px;height:32px;border-radius:8px;background:rgba(255,255,255,.22);
    display:grid;place-items:center;font-weight:700;font-variant-numeric:tabular-nums;
    font-feature-settings:"tnum";font-size:14px;
  }
  .cd-cap{font-size:12px;opacity:.9}
  .countdown-link{
    color:#fff;font-size:13px;border-bottom:1px solid rgba(255,255,255,.75);
    padding-bottom:1px;white-space:nowrap;transition:opacity .18s var(--ease);
  }
  .countdown-link:hover{opacity:.8}
  @media(max-width:767px){
    .countdown-inner{flex-wrap:nowrap;gap:10px;overflow:hidden}
    .countdown-label{font-size:13px;overflow:hidden;text-overflow:ellipsis;white-space:nowrap}
    .cd-num{width:26px;height:26px;font-size:12px;border-radius:6px}
    .cd-cap{display:none}
    .countdown-link{display:none}
  }

  /* ---------- 面包屑 ---------- */
  .breadcrumb{display:flex;flex-wrap:wrap;align-items:center;gap:8px;font-size:14px;color:var(--ink-mute)}
  .breadcrumb a{color:var(--ink-mute);transition:color .18s var(--ease)}
  .breadcrumb a:hover{color:var(--brand)}
  .breadcrumb .sep{color:#C3CDDD}
  .breadcrumb .current{color:var(--brand);font-weight:500}

  /* ---------- Hero ---------- */
  .hero-banner{
    position:relative;overflow:hidden;background:#0E1726;
  }
  .hero-banner img.hero-bg{
    position:absolute;inset:0;width:100%;height:100%;object-fit:cover;opacity:.5;
  }
  .hero-veil{
    position:absolute;inset:0;
    background:linear-gradient(100deg,rgba(236,241,255,.96) 0%,rgba(236,241,255,.86) 45%,rgba(14,23,38,.42) 100%);
  }
  .hero-inner{position:relative;padding:64px 0 72px;max-width:760px}
  .hero-h1{
    font-size:clamp(30px,4.4vw,48px);line-height:1.22;font-weight:700;color:var(--ink);
    margin:16px 0 14px;
  }
  .hero-sub{font-size:17px;line-height:1.8;color:var(--ink-sub);max-width:620px}
  .hero-btns{display:flex;flex-wrap:wrap;gap:14px;margin-top:28px}
  .hero-stats{
    display:flex;flex-wrap:wrap;gap:0;margin-top:38px;padding-top:24px;
    border-top:1px solid rgba(36,86,240,.18);
  }
  .hero-stat{padding-right:32px;margin-right:32px;border-right:1px solid rgba(36,86,240,.16)}
  .hero-stat:last-child{border-right:0;margin-right:0;padding-right:0}
  .hero-stat b{
    display:block;font-size:24px;color:var(--brand);font-weight:700;
    font-variant-numeric:tabular-nums;line-height:1.3;
  }
  .hero-stat span{font-size:13px;color:var(--ink-mute)}
  @media(max-width:767px){
    .hero-inner{padding:44px 0 52px}
    .hero-stat{padding-right:20px;margin-right:20px}
    .hero-stat b{font-size:20px}
    .hero-btns .btn{width:100%;justify-content:center}
  }

  /* ---------- 按钮 ---------- */
  .btn{
    display:inline-flex;align-items:center;gap:8px;height:48px;padding:0 24px;
    border-radius:var(--r-md);font-size:15px;font-weight:600;cursor:pointer;
    border:1px solid transparent;transition:all .18s var(--ease);white-space:nowrap;
  }
  .btn svg{transition:transform .18s var(--ease)}
  .btn-primary{background:var(--brand);color:#fff;box-shadow:0 6px 16px -8px rgba(36,86,240,.6)}
  .btn-primary:hover{background:var(--brand-dark);transform:translateY(-1px);box-shadow:var(--sh-hover)}
  .btn-primary:active{transform:translateY(0)}
  .btn-ghost{background:#fff;color:var(--ink);border-color:var(--line)}
  .btn-ghost:hover{border-color:var(--brand);color:var(--brand);transform:translateY(-1px);box-shadow:var(--sh-card)}
  .btn-ember{background:var(--ember);color:#fff;box-shadow:0 6px 16px -8px rgba(255,106,31,.6)}
  .btn-ember:hover{background:#EA5A0F;transform:translateY(-1px);box-shadow:var(--sh-hover)}
  .btn-sm{height:40px;padding:0 18px;font-size:14px;border-radius:var(--r-md)}
  .btn:hover svg{transform:translateX(2px)}
  .btn:disabled{opacity:.45;box-shadow:none;cursor:not-allowed;transform:none}
  .btn-text{
    display:inline-flex;align-items:center;gap:6px;font-size:15px;font-weight:600;color:var(--brand);
    transition:color .18s var(--ease);
  }
  .btn-text svg{transition:transform .18s var(--ease)}
  .btn-text:hover{color:var(--brand-dark)}
  .btn-text:hover svg{transform:translateX(2px)}

  /* ---------- 通用区块 ---------- */
  .section{padding:96px 0}
  .section.alt{background:#fff}
  .section-head{display:flex;flex-wrap:wrap;align-items:flex-end;justify-content:space-between;gap:20px;margin-bottom:42px}
  .eyebrow{
    display:inline-flex;align-items:center;gap:8px;font-size:13px;font-weight:600;color:var(--brand);
    letter-spacing:.04em;
  }
  .eyebrow::before{content:"";width:22px;height:2px;background:var(--brand);border-radius:2px}
  .h2{font-size:clamp(24px,2.6vw,31px);font-weight:700;line-height:1.32;color:var(--ink);margin-top:12px}
  .section-desc{font-size:15px;color:var(--ink-sub);max-width:620px;margin-top:10px}
  @media(max-width:1023px){.section{padding:64px 0}}
  @media(max-width:639px){.section{padding:48px 0}.section-head{margin-bottom:28px}}

  /* ---------- 徽章 ---------- */
  .badge{
    display:inline-flex;align-items:center;gap:6px;height:24px;padding:0 10px;border-radius:var(--r-pill);
    font-size:12px;font-weight:600;line-height:1;
  }
  .badge-cat{background:var(--brand-light);color:var(--brand)}
  .badge-limit{background:var(--ember-light);color:var(--ember)}
  .badge-state{background:#E6FAFA;color:#0E9E9E}
  .dot-pulse{width:6px;height:6px;border-radius:50%;background:var(--ember);position:relative}
  .dot-pulse::after{
    content:"";position:absolute;inset:-3px;border-radius:50%;border:1px solid var(--ember);opacity:.5;
    animation:pulse 1.8s var(--ease) infinite;
  }
  @keyframes pulse{0%{transform:scale(.7);opacity:.6}100%{transform:scale(1.25);opacity:0}}

  /* ---------- 准备清单卡片 ---------- */
  .prep-grid{display:grid;grid-template-columns:repeat(3,minmax(0,1fr));gap:24px}
  .card{
    background:#fff;border:1px solid var(--line);border-radius:var(--r-card);
    box-shadow:var(--sh-card);transition:transform .2s var(--ease),box-shadow .2s var(--ease),border-color .2s var(--ease);
    overflow:hidden;
  }
  .card:hover{transform:translateY(-4px);box-shadow:var(--sh-hover);border-color:rgba(36,86,240,.35)}
  .card-media{aspect-ratio:16/9;overflow:hidden;border-radius:var(--r-card) var(--r-card) 0 0;background:var(--page)}
  .card-media img{width:100%;height:100%;object-fit:cover;transition:transform .3s var(--ease)}
  .card:hover .card-media img{transform:scale(1.03)}
  .card-body{padding:22px}
  .card-body h3{font-size:18px;font-weight:600;color:var(--ink);margin-bottom:8px}
  .card-body p{font-size:14.5px;color:var(--ink-sub);line-height:1.75}
  .num-tag{
    display:inline-block;font-size:12px;font-weight:700;color:var(--brand);
    font-variant-numeric:tabular-nums;letter-spacing:.06em;margin-bottom:10px;
  }
  @media(max-width:1023px){.prep-grid{grid-template-columns:repeat(2,minmax(0,1fr))}}
  @media(max-width:639px){.prep-grid{grid-template-columns:1fr}}

  /* ---------- 时间轴 ---------- */
  .timeline{margin-top:8px;max-width:880px}
  .tl-item{
    display:grid;grid-template-columns:44px 1fr;gap:20px;padding-bottom:34px;position:relative;
  }
  .tl-item:last-child{padding-bottom:0}
  .tl-item::before{
    content:"";position:absolute;left:21px;top:44px;bottom:0;width:2px;background:var(--line);
  }
  .tl-item:last-child::before{display:none}
  .tl-dot{
    width:44px;height:44px;border-radius:50%;background:var(--brand);color:#fff;
    display:grid;place-items:center;font-weight:700;font-size:15px;
    border:4px solid #fff;box-shadow:0 0 0 1px var(--line);z-index:1;
    font-variant-numeric:tabular-nums;
  }
  .tl-body{
    background:#fff;border:1px solid var(--line);border-radius:var(--r-card);
    padding:20px 22px;box-shadow:var(--sh-card);transition:border-color .2s var(--ease),box-shadow .2s var(--ease);
  }
  .tl-body:hover{border-color:rgba(36,86,240,.35);box-shadow:var(--sh-hover)}
  .tl-body h3{font-size:17px;font-weight:600;color:var(--ink);margin-bottom:6px}
  .tl-body p{font-size:14.5px;color:var(--ink-sub);line-height:1.8}
  .tl-note{
    display:inline-flex;align-items:center;gap:6px;margin-top:12px;font-size:13px;color:var(--ink-mute);
  }
  .tl-note i{width:6px;height:6px;border-radius:50%;background:var(--teal);display:block}
  @media(max-width:639px){
    .tl-item{grid-template-columns:34px 1fr;gap:14px}
    .tl-dot{width:34px;height:34px;font-size:13px;border-width:3px}
    .tl-item::before{left:16px;top:34px}
    .tl-body{padding:16px}
  }

  /* ---------- 排查清单双栏 ---------- */
  .check-grid{display:grid;grid-template-columns:repeat(2,minmax(0,1fr));gap:24px}
  .check-card{
    background:#fff;border:1px dashed var(--line);border-radius:var(--r-card);padding:26px;
  }
  .check-card h3{font-size:18px;font-weight:600;margin-bottom:16px;display:flex;align-items:center;gap:10px}
  .check-card h3 .idx{
    width:26px;height:26px;border-radius:8px;background:var(--brand-light);color:var(--brand);
    font-size:12px;font-weight:700;display:grid;place-items:center;flex:0 0 auto;
  }
  .check-list li{
    display:flex;gap:10px;padding:11px 0;border-bottom:1px solid var(--line);
    font-size:14.5px;color:var(--ink-sub);line-height:1.7;
  }
  .check-list li:last-child{border-bottom:0;padding-bottom:0}
  .check-list li svg{flex:0 0 auto;margin-top:5px;color:var(--brand)}
  @media(max-width:767px){.check-grid{grid-template-columns:1fr}}

  /* ---------- FAQ ---------- */
  .faq-wrap{max-width:880px}
  .faq-item{
    background:#fff;border:1px solid var(--line);border-left:3px solid transparent;
    border-radius:var(--r-md);margin-bottom:12px;padding:18px 22px;
    transition:border-color .2s var(--ease),box-shadow .2s var(--ease);
  }
  .faq-item:hover{border-color:rgba(36,86,240,.3);border-left-color:rgba(36,86,240,.3)}
  .faq-item[open]{border-left-color:var(--brand);box-shadow:var(--sh-card)}
  .faq-item summary{
    list-style:none;cursor:pointer;display:flex;align-items:flex-start;justify-content:space-between;
    gap:16px;font-size:16px;font-weight:600;color:var(--ink);line-height:1.6;
  }
  .faq-item summary::-webkit-details-marker{display:none}
  .faq-ico{
    flex:0 0 auto;width:22px;height:22px;margin-top:2px;color:var(--brand);
    transition:transform .2s var(--ease);
  }
  .faq-item[open] .faq-ico{transform:rotate(45deg)}
  .faq-answer{font-size:15px;color:var(--ink-sub);line-height:1.9;margin-top:12px;padding-right:28px}
  @media(max-width:639px){.faq-item{padding:16px}.faq-answer{padding-right:0}}

  /* ---------- 表单 CTA ---------- */
  .cta-section{background:var(--brand-light);border-top:1px solid rgba(36,86,240,.12);border-bottom:1px solid rgba(36,86,240,.12)}
  .cta-grid{display:grid;grid-template-columns:1fr 460px;gap:48px;align-items:start}
  .cta-points{margin-top:22px;display:flex;flex-direction:column;gap:12px}
  .cta-points li{display:flex;gap:10px;font-size:15px;color:var(--ink-sub);line-height:1.7}
  .cta-points svg{flex:0 0 auto;margin-top:5px;color:var(--brand)}
  .form-card{
    background:#fff;border:1px solid var(--line);border-radius:var(--r-card);
    padding:28px;box-shadow:var(--sh-hover);
  }
  .form-card h3{font-size:19px;font-weight:600;margin-bottom:6px}
  .form-card .form-tip{font-size:13px;color:var(--ink-mute);margin-bottom:20px}
  .field{margin-bottom:16px}
  .field label{display:block;font-size:14px;color:var(--ink-sub);margin-bottom:8px;font-weight:500}
  .field input,.field select,.field textarea{
    width:100%;height:48px;padding:0 14px;border:1px solid var(--line);border-radius:var(--r-md);
    background:#fff;outline:none;font-size:15px;transition:border-color .18s var(--ease),box-shadow .18s var(--ease);
  }
  .field textarea{height:96px;padding:12px 14px;resize:vertical;line-height:1.7}
  .field select{appearance:none;background-image:url("data:image/svg+xml;utf8,<svg xmlns='http://www.w3.org/2000/svg' width='14' height='14' viewBox='0 0 24 24' fill='none' stroke='%237A8798' stroke-width='2.2' stroke-linecap='round'><path d='M6 9l6 6 6-6'/></svg>");background-repeat:no-repeat;background-position:right 14px center}
  .field input:focus,.field select:focus,.field textarea:focus{
    border-color:var(--brand);box-shadow:0 0 0 4px rgba(36,86,240,.1);
  }
  .field .err{display:none;font-size:13px;color:var(--ember);margin-top:6px}
  .field.has-err .err{display:block}
  .field.has-err input,.field.has-err select{border-color:var(--ember)}
  .form-note{font-size:12px;color:var(--ink-mute);margin-top:12px;line-height:1.7}
  .form-ok{
    display:none;margin-top:16px;padding:14px 16px;border-radius:var(--r-md);
    background:#E6FAFA;color:#0E8181;font-size:14px;line-height:1.7;
  }
  .form-ok.is-show{display:block}
  @media(max-width:1023px){.cta-grid{grid-template-columns:1fr;gap:32px}}

  /* ---------- 页脚 ---------- */
  .site-footer{background:var(--ink);color:#fff;margin-top:0}
  .footer-grid{
    display:grid;grid-template-columns:1.4fr 1fr 1fr 1fr;gap:40px;
    padding-top:64px;padding-bottom:40px;
  }
  .footer-brand p{font-size:14px;line-height:1.85;color:rgba(255,255,255,.72);margin-top:16px;max-width:320px}
  .brand-footer .brand-name{color:#fff}
  .brand-footer .brand-mark{background:var(--brand)}
  .footer-col h4{font-size:14px;font-weight:600;color:#fff;margin-bottom:16px}
  .footer-links{display:flex;flex-direction:column;gap:10px}
  .footer-links a,.footer-links span{font-size:14px;color:rgba(255,255,255,.72);line-height:1.6}
  .footer-links a{transition:color .18s var(--ease)}
  .footer-links a:hover{color:#fff}
  .footer-bottom{
    display:flex;flex-wrap:wrap;gap:12px;justify-content:space-between;align-items:center;
    border-top:1px solid rgba(255,255,255,.08);padding-top:20px;padding-bottom:28px;
    font-size:13px;color:rgba(255,255,255,.5);
  }
  @media(max-width:1023px){
    .footer-grid{grid-template-columns:1fr 1fr;gap:32px;padding-top:48px}
  }
  @media(max-width:639px){
    .footer-grid{grid-template-columns:1fr;gap:28px}
    .footer-bottom{flex-direction:column;align-items:flex-start}
  }

  /* ---------- 断点：导航折叠 ---------- */
  @media(max-width:1180px){
    .command-search{width:190px}
    .main-nav{gap:16px}
    .nav-link{font-size:14px}
  }
  @media(max-width:1079px){
    .main-nav,.header-actions .text-link,.header-actions .command-search{display:none}
    .nav-toggle{display:flex}
    .header-inner{justify-content:space-between}
  }
  @media(max-width:520px){
    .header-actions .btn-sm{display:none}
  }

  /* 细网格纹理 */
  .grid-texture{
    background-image:linear-gradient(rgba(36,86,240,.045) 1px,transparent 1px),
                     linear-gradient(90deg,rgba(36,86,240,.045) 1px,transparent 1px);
    background-size:36px 36px;
  }
  .empty-state{
    border:1px dashed var(--line);border-radius:var(--r-card);padding:48px 24px;text-align:center;
    background:#fff;color:var(--ink-mute);font-size:15px;
  }