/* roulang page: index */
/* ===== 设计变量：主色取高饱和品牌紫，辅色取电光青，暖橙仅用于关键行动点 ===== */
:root{
  --brand:#6B2BFF;
  --brand-deep:#3D0FA8;
  --cyan:#12D8C4;
  --orange:#FF7A3D;
  --ink:#191233;
  --sub:#5B5478;
  --muted:#8B85A6;
  --bg:#F7F5FF;
  --card:#FFFFFF;
  --line:#ECE9F5;
  --field:#FBFAFF;
  --field-line:#E3E0EE;
  --tint:#F1ECFF;
  --dark:#150C2B;
  --grad:linear-gradient(118deg,#6B2BFF 0%,#9B4DFF 48%,#12D8C4 100%);
  --grad-soft:linear-gradient(118deg,#F1ECFF 0%,#E7FBF8 100%);
  --r-sm:12px;
  --r-card:20px;
  --r-lg:28px;
  --r-pill:999px;
  --sh:0 10px 30px rgba(36,16,70,.08);
  --sh-hover:0 18px 44px rgba(36,16,70,.16);
  --sh-nav:0 6px 20px rgba(36,16,70,.10);
  --font:"PingFang SC","HarmonyOS Sans SC","Microsoft YaHei",system-ui,-apple-system,"Segoe UI",sans-serif;
}
*,*::before,*::after{box-sizing:border-box;}
html{-webkit-text-size-adjust:100%;scroll-behavior:smooth;}
body{
  margin:0;padding:0;background:var(--bg);color:var(--ink);
  font-family:var(--font);font-size:16px;line-height:1.75;font-weight:400;
  -webkit-font-smoothing:antialiased;
}
img{max-width:100%;display:block;object-fit:cover;border-radius:16px;background:var(--grad-soft);}
a{color:inherit;text-decoration:none;transition:color .25s ease;}
a:hover{color:var(--brand);}
button,input,textarea,select{font-family:inherit;font-size:inherit;color:inherit;}
h1,h2,h3,h4{margin:0;letter-spacing:-.01em;color:var(--ink);}
h1{font-size:clamp(30px,4.4vw,50px);line-height:1.2;font-weight:800;}
h2{font-size:clamp(23px,2.8vw,33px);line-height:1.3;font-weight:700;}
h3{font-size:clamp(18px,1.9vw,22px);line-height:1.4;font-weight:600;}
p{margin:0 0 16px;}
p:last-child{margin-bottom:0;}
ul{margin:0;padding:0;list-style:none;}
:focus-visible{outline:3px solid var(--cyan);outline-offset:2px;border-radius:6px;}
.grid-container{max-width:1200px;margin:0 auto;padding:0 20px;}
@media (min-width:1024px){.grid-container{padding:0 32px;}}
.num{font-variant-numeric:tabular-nums;font-weight:800;}

/* ===== 顶部导航 ===== */
.site-header{
  position:sticky;top:0;z-index:60;background:rgba(247,245,255,.92);
  backdrop-filter:saturate(150%) blur(8px);
  border-bottom:1px solid transparent;transition:box-shadow .3s ease,background .3s ease,border-color .3s ease;
}
.site-header.is-stuck{background:rgba(255,255,255,.92);box-shadow:var(--sh-nav);border-bottom-color:var(--line);}
.nav-inner{display:flex;align-items:center;justify-content:space-between;gap:20px;min-height:76px;}
.brand{display:flex;align-items:center;gap:12px;flex-shrink:0;}
.brand-mark{
  width:42px;height:42px;border-radius:14px;background:var(--grad);
  display:flex;align-items:center;justify-content:center;color:#fff;font-weight:800;font-size:19px;
  box-shadow:0 8px 20px rgba(107,43,255,.28);
}
.brand-text{display:flex;flex-direction:column;line-height:1.2;}
.brand-name{font-size:17px;font-weight:800;color:var(--brand-deep);letter-spacing:-.01em;}
.brand-sub{font-size:11px;color:var(--muted);letter-spacing:.06em;}
.nav-menu{display:flex;align-items:center;gap:32px;}
.nav-menu a{font-size:15px;font-weight:500;color:var(--sub);position:relative;padding:6px 0;}
.nav-menu a::after{
  content:"";position:absolute;left:0;right:0;bottom:-4px;height:3px;border-radius:3px;
  background:var(--grad);transform:scaleX(0);transform-origin:left;transition:transform .3s ease;
}
.nav-menu a:hover{color:var(--brand);}
.nav-menu a:hover::after,.nav-menu a.is-active::after{transform:scaleX(1);}
.nav-menu a.is-active{color:var(--brand-deep);font-weight:600;}
.nav-cta{display:flex;align-items:center;gap:12px;}
.btn{
  display:inline-flex;align-items:center;justify-content:center;gap:8px;
  border:none;cursor:pointer;border-radius:var(--r-pill);font-weight:600;
  transition:transform .3s ease,box-shadow .3s ease,background .3s ease,color .3s ease,border-color .3s ease;
}
.btn-primary{
  background:var(--grad);color:#fff;min-width:132px;height:44px;padding:0 22px;font-size:15px;
  box-shadow:0 10px 24px rgba(107,43,255,.28);
}
.btn-primary:hover{color:#fff;transform:translateY(-1px);box-shadow:0 14px 30px rgba(107,43,255,.36);filter:brightness(1.06);}
.btn-primary:active{transform:translateY(0);box-shadow:0 6px 14px rgba(107,43,255,.3);}
.btn-ghost{
  background:#fff;color:var(--brand-deep);border:1px solid var(--line);
  height:48px;padding:0 26px;font-size:15px;box-shadow:var(--sh);
}
.btn-ghost:hover{color:var(--brand);border-color:#D8CFFF;transform:translateY(-1px);}
.btn-lg{height:52px;padding:0 30px;font-size:16px;}
.arrow{display:inline-block;transition:transform .3s ease;}
.btn:hover .arrow,.link-more:hover .arrow{transform:translateX(4px);}
.nav-toggle{
  display:none;width:44px;height:44px;border-radius:12px;background:#fff;border:1px solid var(--line);
  align-items:center;justify-content:center;cursor:pointer;box-shadow:var(--sh);
}
.nav-toggle span{display:block;width:18px;height:2px;background:var(--brand-deep);border-radius:2px;position:relative;}
.nav-toggle span::before,.nav-toggle span::after{
  content:"";position:absolute;left:0;width:18px;height:2px;background:var(--brand-deep);border-radius:2px;
}
.nav-toggle span::before{top:-6px;}
.nav-toggle span::after{top:6px;}

/* 移动端抽屉 */
.drawer-mask{
  position:fixed;inset:0;background:rgba(21,12,43,.45);opacity:0;visibility:hidden;
  transition:opacity .3s ease,visibility .3s ease;z-index:80;
}
.drawer{
  position:fixed;top:0;right:0;bottom:0;width:82%;max-width:340px;background:#fff;z-index:90;
  transform:translateX(100%);transition:transform .32s ease;padding:26px 22px;display:flex;flex-direction:column;
  box-shadow:-16px 0 40px rgba(36,16,70,.18);
}
.drawer-top{display:flex;align-items:center;justify-content:space-between;margin-bottom:22px;}
.drawer-close{width:38px;height:38px;border-radius:12px;border:1px solid var(--line);background:var(--field);cursor:pointer;font-size:18px;color:var(--sub);}
.drawer nav{display:flex;flex-direction:column;gap:6px;flex:1;}
.drawer nav a{
  font-size:18px;font-weight:600;color:var(--ink);padding:14px 12px;border-radius:14px;
}
.drawer nav a:hover,.drawer nav a.is-active{background:var(--tint);color:var(--brand-deep);}
.drawer .btn{width:100%;height:50px;}
body.drawer-open .drawer{transform:translateX(0);}
body.drawer-open .drawer-mask{opacity:1;visibility:visible;}

/* ===== Hero ===== */
.hero{
  position:relative;overflow:hidden;padding:64px 0 0;
  background:var(--grad-soft);
}
.hero-inner{display:grid;grid-template-columns:1fr;gap:34px;align-items:center;min-height:460px;padding-bottom:56px;}
.hero-copy{position:relative;z-index:2;}
.hero-tag{
  display:inline-flex;align-items:center;gap:8px;background:rgba(255,255,255,.86);
  border:1px solid #E4DBFF;color:var(--brand-deep);border-radius:var(--r-pill);
  padding:7px 16px;font-size:13px;font-weight:600;margin-bottom:20px;box-shadow:var(--sh);
}
.hero-tag i{width:8px;height:8px;border-radius:50%;background:var(--grad);display:inline-block;}
.hero h1{max-width:15em;}
.hero h1 em{font-style:normal;color:var(--brand-deep);}
.hero-sub{font-size:18px;line-height:1.7;color:var(--sub);margin:20px 0 28px;max-width:34em;}
.hero-actions{display:flex;flex-wrap:wrap;gap:14px;}
.hero-media{position:relative;border-radius:var(--r-lg);overflow:hidden;box-shadow:var(--sh-hover);}
.hero-media img{width:100%;height:320px;border-radius:var(--r-lg);}
.hero-media::after{
  content:"";position:absolute;inset:0;
  background:linear-gradient(180deg,rgba(61,15,168,.06) 0%,rgba(21,12,43,.42) 100%);
  pointer-events:none;
}
.hero-stats{position:relative;z-index:3;margin-top:-34px;}
.stat-strip{
  display:grid;grid-template-columns:repeat(3,1fr);gap:18px;background:#fff;border:1px solid var(--line);
  border-radius:var(--r-lg);padding:22px 24px;box-shadow:var(--sh);
}
.stat-item{display:flex;flex-direction:column;gap:4px;}
.stat-num{font-size:32px;font-weight:800;background:var(--grad);-webkit-background-clip:text;background-clip:text;color:transparent;font-variant-numeric:tabular-nums;}
.stat-label{font-size:13px;color:var(--muted);}

/* ===== 通用板块 ===== */
.section{padding:88px 0;}
.section-tint{background:#fff;}
.section-head{max-width:760px;margin-bottom:40px;}
.section-head h2{margin-bottom:14px;}
.section-head p{color:var(--sub);font-size:16px;margin:0;}
.bar{width:56px;height:6px;border-radius:3px;background:var(--grad);display:block;margin-bottom:20px;}
.eyebrow{display:block;font-size:13px;font-weight:700;letter-spacing:.1em;color:var(--brand);margin-bottom:12px;}

/* ===== 入口板块：不对称网格 ===== */
.entry-grid{display:grid;grid-template-columns:1fr;gap:24px;}
.entry-panel{
  background:#fff;border:1px solid var(--line);border-radius:var(--r-lg);padding:30px;
  box-shadow:var(--sh);transition:transform .35s ease,box-shadow .35s ease;display:flex;flex-direction:column;
}
.entry-panel:hover{transform:translateY(-4px);box-shadow:var(--sh-hover);}
.entry-panel .media{border-radius:18px;overflow:hidden;margin-bottom:22px;}
.entry-panel .media img{width:100%;height:230px;border-radius:18px;transition:transform .35s ease;}
.entry-panel:hover .media img{transform:scale(1.04);}
.entry-panel h3{margin-bottom:12px;}
.entry-panel p{color:var(--sub);font-size:15px;}
.chip{
  display:inline-flex;align-items:center;gap:6px;background:var(--tint);color:var(--brand-deep);
  border-radius:var(--r-pill);padding:5px 13px;font-size:12px;font-weight:600;margin-bottom:14px;
}
.chip-orange{background:#FFF0E7;color:#C24C11;}
.corner-badge{
  position:absolute;top:18px;left:18px;background:var(--grad);color:#fff;border-radius:var(--r-pill);
  padding:6px 14px;font-size:12px;font-weight:700;box-shadow:0 10px 22px rgba(107,43,255,.3);
}
.mini-cards{display:grid;grid-template-columns:1fr;gap:24px;}
.mini-card{
  background:#fff;border:1px solid var(--line);border-radius:var(--r-card);padding:24px;box-shadow:var(--sh);
  transition:transform .35s ease,box-shadow .35s ease;display:flex;flex-direction:column;
}
.mini-card:hover{transform:translateY(-4px);box-shadow:var(--sh-hover);}
.icon-badge{
  width:46px;height:46px;border-radius:14px;background:var(--grad);color:#fff;font-weight:800;
  display:flex;align-items:center;justify-content:center;font-size:16px;margin-bottom:16px;
  box-shadow:0 10px 22px rgba(107,43,255,.24);
}
.mini-card h3{font-size:19px;margin-bottom:10px;}
.mini-card p{font-size:14px;color:var(--sub);}
.link-more{
  display:inline-flex;align-items:center;gap:6px;margin-top:auto;padding-top:16px;
  font-size:14px;font-weight:600;color:var(--brand);
}
.entry-list{display:flex;flex-direction:column;gap:10px;margin-top:16px;}
.entry-list li{display:flex;gap:10px;font-size:14px;color:var(--sub);}
.entry-list li::before{
  content:"";flex:0 0 6px;width:6px;height:6px;border-radius:50%;background:var(--brand);margin-top:9px;
}

/* ===== 深色数据板块 ===== */
.section-dark{
  background:var(--dark);color:#EDE9FA;position:relative;overflow:hidden;
}
.section-dark::before{
  content:"";position:absolute;inset:0;
  background:repeating-linear-gradient(118deg,rgba(155,77,255,.10) 0px,rgba(155,77,255,.10) 2px,transparent 2px,transparent 26px);
  pointer-events:none;
}
.section-dark .container-inner{position:relative;z-index:2;}
.section-dark h2{color:#fff;}
.section-dark .section-head p{color:#B9B3D0;}
.dark-stats{display:grid;grid-template-columns:1fr;gap:28px;}
.dark-stat{border-left:3px solid transparent;border-image:var(--grad) 1;padding-left:18px;}
.dark-stat .stat-num{font-size:44px;background:none;color:#fff;-webkit-text-fill-color:#fff;}
.dark-stat .stat-label{color:#B9B3D0;font-size:13px;}
.dark-stat p{font-size:14px;color:#B9B3D0;margin-top:10px;}
.dark-note{
  margin-top:44px;padding:18px 22px;border-radius:var(--r-sm);
  background:rgba(255,255,255,.06);border-left:4px solid var(--cyan);color:#D9D3EE;font-size:14px;
}

/* ===== 案例交替图文 ===== */
.case-row{display:grid;grid-template-columns:1fr;gap:28px;align-items:center;margin-bottom:56px;}
.case-row:last-child{margin-bottom:0;}
.case-media{border-radius:var(--r-lg);overflow:hidden;box-shadow:var(--sh);}
.case-media img{width:100%;height:280px;border-radius:var(--r-lg);transition:transform .35s ease;}
.case-media:hover img{transform:scale(1.04);}
.case-body h3{margin-bottom:14px;}
.case-body p{color:var(--sub);font-size:15px;}
.case-points{display:flex;flex-direction:column;gap:12px;margin-top:20px;}
.case-points li{
  display:flex;gap:12px;font-size:14px;color:var(--ink);background:#fff;border:1px solid var(--line);
  border-radius:var(--r-sm);padding:12px 16px;box-shadow:var(--sh);
}
.case-points li span{
  flex:0 0 22px;width:22px;height:22px;border-radius:50%;background:var(--grad);color:#fff;
  font-size:12px;font-weight:800;display:flex;align-items:center;justify-content:center;
}

/* ===== 流程 + 说明卡 ===== */
.flow-wrap{display:grid;grid-template-columns:1fr;gap:28px;}
.flow-steps{display:grid;grid-template-columns:1fr;gap:24px;position:relative;}
.flow-step{background:#fff;border:1px solid var(--line);border-radius:var(--r-card);padding:26px;box-shadow:var(--sh);}
.flow-step .step-no{
  width:38px;height:38px;border-radius:50%;background:var(--grad);color:#fff;font-weight:800;
  display:flex;align-items:center;justify-content:center;margin-bottom:16px;
}
.flow-step h3{font-size:19px;margin-bottom:10px;}
.flow-step p{font-size:14px;color:var(--sub);margin:0;}
.side-note{
  background:#fff;border:1px solid var(--line);border-radius:var(--r-lg);padding:28px;box-shadow:var(--sh);
}
.side-note h3{margin-bottom:14px;}
.side-note ul{display:flex;flex-direction:column;gap:12px;}
.side-note li{font-size:14px;color:var(--sub);padding-left:16px;position:relative;}
.side-note li::before{
  content:"";position:absolute;left:0;top:9px;width:8px;height:8px;border-radius:50%;background:var(--cyan);
}

/* ===== 资讯列表 ===== */
.list-head{display:flex;align-items:flex-end;justify-content:space-between;gap:20px;margin-bottom:32px;flex-wrap:wrap;}
.list-head h2{margin-bottom:0;}
.news-grid{display:grid;grid-template-columns:1fr;gap:24px;}
.news-card{
  display:flex;flex-direction:column;background:#fff;border:1px solid var(--line);
  border-radius:var(--r-card);padding:24px;box-shadow:var(--sh);
  transition:transform .35s ease,box-shadow .35s ease;
}
.news-card:hover{transform:translateY(-4px);box-shadow:var(--sh-hover);color:inherit;}
.news-thumb{height:150px;border-radius:16px;background:var(--grad-soft);margin-bottom:18px;position:relative;overflow:hidden;}
.news-thumb::after{
  content:"";position:absolute;right:-30px;bottom:-40px;width:130px;height:130px;border-radius:50%;
  background:radial-gradient(circle,rgba(107,43,255,.22) 0%,rgba(107,43,255,0) 70%);
}
.news-card h3{font-size:18px;line-height:1.5;margin-bottom:10px;display:-webkit-box;-webkit-line-clamp:2;-webkit-box-orient:vertical;overflow:hidden;}
.news-card p{font-size:14px;color:var(--sub);display:-webkit-box;-webkit-line-clamp:3;-webkit-box-orient:vertical;overflow:hidden;}
.news-meta{
  display:flex;align-items:center;justify-content:space-between;gap:12px;margin-top:auto;padding-top:18px;
  font-size:13px;color:var(--muted);border-top:1px solid var(--line);
}
.news-meta .arrow{color:var(--brand);font-weight:700;}
.empty-state{
  grid-column:1/-1;text-align:center;padding:52px 24px;background:#fff;border:1px dashed #D9D2F2;
  border-radius:var(--r-card);color:var(--sub);
}
.empty-state .empty-icon{
  width:56px;height:56px;border-radius:50%;background:var(--tint);color:var(--brand);
  display:flex;align-items:center;justify-content:center;font-size:22px;font-weight:800;margin:0 auto 16px;
}

/* ===== FAQ ===== */
.faq-card{background:#fff;border:1px solid var(--line);border-radius:var(--r-card);box-shadow:var(--sh);overflow:hidden;}
.faq-item{border-bottom:1px solid var(--line);}
.faq-item:last-child{border-bottom:none;}
.faq-q{
  width:100%;display:flex;align-items:center;justify-content:space-between;gap:16px;text-align:left;
  background:none;border:none;cursor:pointer;padding:20px 24px;font-size:17px;font-weight:600;color:var(--ink);
}
.faq-q:hover{color:var(--brand);}
.faq-icon{
  flex:0 0 28px;width:28px;height:28px;border-radius:50%;border:1px solid var(--brand);color:var(--brand);
  display:flex;align-items:center;justify-content:center;font-size:16px;font-weight:700;transition:all .3s ease;
}
.faq-item.is-open .faq-icon{background:var(--grad);color:#fff;border-color:transparent;}
.faq-a{max-height:0;overflow:hidden;transition:max-height .35s ease;}
.faq-a p{padding:0 24px 22px;font-size:15px;line-height:1.8;color:var(--sub);}
.faq-item.is-open .faq-a{max-height:400px;}

/* ===== 表单 ===== */
.form-card{background:#fff;border:1px solid var(--line);border-radius:var(--r-lg);padding:30px;box-shadow:var(--sh);}
.form-card h3{margin-bottom:10px;}
.form-card .form-hint{font-size:14px;color:var(--sub);margin-bottom:22px;}
.field{margin-bottom:18px;}
.field label{display:block;font-size:14px;font-weight:600;margin-bottom:8px;color:var(--ink);}
.field input,.field textarea{
  width:100%;height:48px;padding:0 14px;border-radius:var(--r-sm);border:1px solid var(--field-line);
  background:var(--field);transition:border-color .25s ease,box-shadow .25s ease;
}
.field textarea{height:120px;padding:12px 14px;resize:vertical;}
.field input:focus,.field textarea:focus{
  outline:none;border-color:var(--brand);box-shadow:0 0 0 4px rgba(107,43,255,.14);
}
.form-submit{width:200px;height:48px;}

/* ===== CTA 横带 ===== */
.cta-band{
  border-radius:var(--r-lg);padding:38px 34px;background:var(--grad);color:#fff;
  display:flex;flex-direction:column;gap:22px;box-shadow:0 20px 46px rgba(107,43,255,.28);
}
.cta-band h2{color:#fff;margin-bottom:10px;}
.cta-band p{color:rgba(255,255,255,.9);margin:0;font-size:15px;}
.btn-white{background:#fff;color:var(--brand-deep);height:48px;padding:0 28px;font-size:15px;}
.btn-white:hover{color:var(--brand);transform:translateY(-1px);}

/* ===== 页脚 ===== */
.site-footer{background:var(--dark);color:#B9B3D0;padding:64px 0 0;margin-top:20px;}
.footer-brand{display:flex;align-items:center;gap:12px;margin-bottom:16px;}
.footer-brand .brand-name{color:#fff;}
.footer-brand .brand-sub{color:#8F88AC;}
.footer-desc{font-size:14px;color:#B9B3D0;max-width:34em;margin-bottom:18px;}
.footer-social{display:flex;gap:12px;margin-bottom:8px;}
.footer-social a{
  width:38px;height:38px;border-radius:12px;background:rgba(255,255,255,.08);
  display:flex;align-items:center;justify-content:center;font-size:13px;color:#CFC9E6;font-weight:600;
}
.footer-social a:hover{background:var(--grad);color:#fff;}
.footer-col h4{color:#fff;font-size:15px;font-weight:700;margin-bottom:16px;}
.footer-col ul{display:flex;flex-direction:column;gap:10px;}
.footer-col a{font-size:14px;color:#B9B3D0;}
.footer-col a:hover{color:var(--cyan);text-decoration:underline;}
.footer-bottom{
  margin-top:44px;border-top:1px solid rgba(255,255,255,.1);padding:20px 0 26px;
  display:flex;flex-direction:column;gap:10px;font-size:13px;color:#8F88AC;
}

/* ===== 响应式 ===== */
@media (max-width:1023px){
  .section{padding:64px 0;}
  .nav-menu{display:none;}
  .nav-toggle{display:flex;}
  .nav-cta .btn-primary{display:none;}
  .hero-inner{min-height:auto;padding-bottom:44px;}
  .hero-media img{height:260px;}
  .drawer nav a{font-size:17px;}
  .form-submit{width:100%;}
}
@media (max-width:639px){
  .section{padding:48px 0;}
  .hero{padding-top:44px;}
  .hero-media{order:2;}
  .hero-media img{height:220px;}
  .stat-strip{grid-template-columns:1fr;gap:14px;padding:20px;}
  .stat-num{font-size:26px;}
  .news-thumb{height:130px;}
  .cta-band{padding:28px 22px;text-align:left;}
  .btn-lg,.btn-ghost{width:100%;}
  .hero-actions{flex-direction:column;}
  .case-media img{height:210px;}
}
@media (min-width:640px){
  .stat-strip{grid-template-columns:repeat(3,1fr);}
  .mini-cards{grid-template-columns:repeat(2,1fr);}
  .news-grid{grid-template-columns:repeat(2,1fr);}
  .dark-stats{grid-template-columns:repeat(2,1fr);}
  .flow-steps{grid-template-columns:repeat(3,1fr);}
  .footer-bottom{flex-direction:row;justify-content:space-between;align-items:center;}
}
@media (min-width:1024px){
  .hero-inner{grid-template-columns:1.05fr .95fr;gap:48px;min-height:520px;}
  .hero h1{font-size:46px;}
  .entry-grid{grid-template-columns:repeat(2,1fr);}
  .entry-panel.big{align-self:stretch;}
  .mini-cards{gap:24px;}
  .dark-stats{grid-template-columns:repeat(4,1fr);}
  .case-row{grid-template-columns:1fr 1fr;gap:48px;}
  .case-row.reverse .case-media{order:2;}
  .flow-wrap{grid-template-columns:1.55fr 1fr;}
  .news-grid{grid-template-columns:repeat(3,1fr);}
  .cta-band{flex-direction:row;align-items:center;justify-content:space-between;}
  .cta-band .cta-text{max-width:60%;}
}

/* roulang page: article */
/* ===== 设计变量：品牌紫为主色，电光青为辅色，暖橙用于强调数字与关键行动点 ===== */
:root{
  --brand:#6B2BFF;
  --brand-deep:#3D0FA8;
  --brand-soft:#F1ECFF;
  --accent:#12D8C4;
  --warn:#FF7A3D;
  --ink:#191233;
  --ink-2:#5B5478;
  --ink-3:#8B85A6;
  --bg:#F7F5FF;
  --card:#FFFFFF;
  --line:#ECE9F5;
  --line-soft:#E3E0EE;
  --dark:#150C2B;
  --ok:#22B07D;
  --grad:linear-gradient(118deg,#6B2BFF 0%,#9B4DFF 48%,#12D8C4 100%);
  --r-sm:12px;
  --r-md:20px;
  --r-lg:28px;
  --r-pill:999px;
  --sh-1:0 10px 30px rgba(36,16,70,.08);
  --sh-2:0 18px 44px rgba(36,16,70,.16);
  --sh-nav:0 6px 20px rgba(36,16,70,.10);
  --sec:88px;
}

/* ===== 基础重置 ===== */
*,*::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:1.75;
  color:var(--ink);
  background:var(--bg);
  -webkit-font-smoothing:antialiased;
}
img{max-width:100%;display:block;border:0;}
a{color:var(--ink);text-decoration:none;transition:color .25s ease;}
a:hover{color:var(--brand);}
a:focus-visible,button:focus-visible,input:focus-visible,textarea:focus-visible,select:focus-visible{
  outline:3px solid var(--accent);
  outline-offset:2px;
  border-radius:6px;
}
h1,h2,h3,h4{margin:0;letter-spacing:-0.01em;color:var(--ink);font-weight:700;}
p{margin:0;}
ul,ol{margin:0;padding:0;}
button{font-family:inherit;font-size:inherit;border:0;background:none;cursor:pointer;}
table{border-collapse:collapse;}
h1{font-size:42px;line-height:1.22;font-weight:800;}
h2{font-size:31px;line-height:1.3;font-weight:700;}
h3{font-size:21px;line-height:1.4;font-weight:600;}
.num{font-variant-numeric:tabular-nums;font-family:ui-monospace,"SFMono-Regular",Menlo,Consolas,monospace;font-weight:800;}

/* ===== 容器与栅格 ===== */
.grid-container{max-width:1200px;margin:0 auto;padding-left:20px;padding-right:20px;}
@media screen and (min-width:1024px){
  .grid-container{padding-left:32px;padding-right:32px;}
}
.sec{padding:var(--sec) 0;}
.sec-tight{padding:56px 0;}
.sec-title{margin-bottom:28px;}
.sec-title h2{margin-bottom:10px;}
.sec-title p{color:var(--ink-2);font-size:16px;max-width:720px;}
.bar{width:56px;height:6px;border-radius:3px;background:var(--grad);margin-bottom:16px;}
.muted{color:var(--ink-2);}
.meta{font-size:13px;color:var(--ink-3);line-height:1.6;}

/* ===== 顶部导航 ===== */
.site-header{
  position:sticky;top:0;z-index:80;
  background:#fff;
  border-bottom:1px solid var(--line);
  transition:box-shadow .3s ease,background-color .3s ease;
}
.site-header.is-scrolled{
  background:rgba(255,255,255,.92);
  backdrop-filter:saturate(160%) blur(10px);
  box-shadow:var(--sh-nav);
}
.header-inner{display:flex;align-items:center;justify-content:space-between;gap:20px;height:76px;}
.brand{display:flex;align-items:center;gap:12px;min-width:0;}
.brand-mark{
  width:40px;height:40px;flex:0 0 40px;border-radius:13px;
  background:var(--grad);color:#fff;
  display:flex;align-items:center;justify-content:center;
  font-weight:800;font-size:19px;letter-spacing:-.02em;
  box-shadow:0 8px 20px rgba(107,43,255,.32);
}
.brand-text{display:flex;flex-direction:column;min-width:0;}
.brand-name{font-size:17px;font-weight:800;color:var(--ink);line-height:1.25;white-space:nowrap;}
.brand-sub{font-size:12px;color:var(--ink-3);line-height:1.4;white-space:nowrap;}
.nav-menu{display:flex;align-items:center;gap:32px;}
.nav-menu a{
  position:relative;
  font-size:15px;
  font-weight:500;
  color:var(--ink-2);
  padding:6px 0;
  white-space:nowrap;
}
.nav-menu a::after{
  content:"";position:absolute;left:0;bottom:-4px;
  width:0;height:3px;border-radius:3px;background:var(--grad);
  transition:width .28s ease;
}
.nav-menu a:hover{color:var(--brand);}
.nav-menu a:hover::after{width:24px;}
.nav-menu a.is-active{color:var(--ink);font-weight:700;}
.nav-menu a.is-active::after{width:24px;}
.header-actions{display:flex;align-items:center;gap:12px;}

.btn{
  display:inline-flex;align-items:center;justify-content:center;gap:8px;
  height:48px;padding:0 26px;border-radius:var(--r-pill);
  font-size:15px;font-weight:700;line-height:1;
  border:1px solid transparent;cursor:pointer;
  transition:transform .25s ease,box-shadow .25s ease,background-color .25s ease,color .25s ease,border-color .25s ease,filter .25s ease;
}
.btn-grad{background:var(--grad);color:#fff;box-shadow:0 10px 24px rgba(107,43,255,.30);}
.btn-grad:hover{color:#fff;transform:translateY(-1px);filter:brightness(1.06);box-shadow:0 14px 30px rgba(107,43,255,.34);}
.btn-grad:active{transform:translateY(0);box-shadow:0 6px 16px rgba(107,43,255,.28);}
.btn-outline{background:#fff;color:var(--ink);border-color:var(--line-soft);box-shadow:var(--sh-1);}
.btn-outline:hover{color:var(--brand);border-color:rgba(107,43,255,.42);transform:translateY(-1px);}
.btn-sm{height:44px;padding:0 20px;font-size:14px;min-width:132px;}
.btn .arw{transition:transform .25s ease;}
.btn:hover .arw{transform:translateX(4px);}

.nav-toggle{
  display:none;width:44px;height:44px;border-radius:12px;
  border:1px solid var(--line-soft);background:#fff;
  align-items:center;justify-content:center;flex-direction:column;gap:5px;
}
.nav-toggle span{display:block;width:19px;height:2px;border-radius:2px;background:var(--ink);transition:transform .25s ease,opacity .25s ease;}
.nav-toggle.is-open span:nth-child(1){transform:translateY(7px) rotate(45deg);}
.nav-toggle.is-open span:nth-child(2){opacity:0;}
.nav-toggle.is-open span:nth-child(3){transform:translateY(-7px) rotate(-45deg);}

.mobile-drawer{
  display:none;
  position:fixed;top:0;right:0;bottom:0;width:min(84vw,340px);
  background:#fff;z-index:90;padding:88px 24px 28px;
  box-shadow:-16px 0 44px rgba(36,16,70,.18);
  transform:translateX(102%);
  transition:transform .32s cubic-bezier(.4,0,.2,1);
  overflow-y:auto;
}
.mobile-drawer.is-open{transform:translateX(0);}
.mobile-drawer a.drawer-link{
  display:block;font-size:18px;font-weight:600;color:var(--ink);
  padding:16px 0;border-bottom:1px solid var(--line);
}
.mobile-drawer a.drawer-link.is-active{color:var(--brand);}
.mobile-drawer .drawer-cta{margin-top:26px;width:100%;}
.drawer-mask{
  display:none;position:fixed;inset:0;background:rgba(21,12,43,.42);z-index:85;
  opacity:0;pointer-events:none;transition:opacity .3s ease;
}
.drawer-mask.is-open{opacity:1;pointer-events:auto;}

/* ===== 公告条 ===== */
.notice{
  display:flex;align-items:center;justify-content:space-between;gap:16px;flex-wrap:wrap;
  background:var(--brand-soft);border-radius:var(--r-sm);
  padding:12px 18px 12px 20px;position:relative;overflow:hidden;
  font-size:14px;color:var(--ink-2);
}
.notice::before{content:"";position:absolute;left:0;top:0;bottom:0;width:4px;background:var(--grad);}
.notice a{font-size:14px;font-weight:600;color:var(--brand);}

/* ===== 文章主体布局 ===== */
.article-main{padding:28px 0 88px;}
.crumb{
  display:flex;align-items:center;gap:8px;flex-wrap:wrap;
  font-size:14px;color:var(--ink-3);margin-bottom:20px;
}
.crumb a{color:var(--ink-3);}
.crumb a:hover{color:var(--brand);}
.crumb .sep{color:#C9C4DC;}
.crumb .current{max-width:52ch;overflow:hidden;text-overflow:ellipsis;white-space:nowrap;color:var(--ink-2);}

.art-grid{display:grid;grid-template-columns:minmax(0,1fr) 336px;gap:32px;align-items:start;}

.article-shell{
  background:var(--card);border:1px solid var(--line);border-radius:var(--r-lg);
  padding:40px 44px 44px;box-shadow:var(--sh-1);
}
.article-head{padding-bottom:22px;border-bottom:1px solid var(--line);}
.pill{
  display:inline-flex;align-items:center;
  background:var(--brand-soft);color:var(--brand);
  font-size:12px;font-weight:700;letter-spacing:.02em;
  padding:5px 12px;border-radius:var(--r-pill);margin-bottom:14px;
}
.article-head h1{font-size:32px;line-height:1.32;margin-bottom:14px;word-break:break-word;}
.article-meta{display:flex;flex-wrap:wrap;align-items:center;gap:10px;font-size:13px;color:var(--ink-3);}
.article-meta .dot{width:4px;height:4px;border-radius:50%;background:#CFC9E2;}

.article-body{font-size:17px;line-height:1.9;color:#241B42;padding-top:28px;max-width:820px;}
.article-body>*:first-child{margin-top:0;}
.article-body p{margin:0 0 18px;}
.article-body h2{
  position:relative;font-size:26px;line-height:1.38;margin:40px 0 16px;padding-left:16px;
}
.article-body h2::before{
  content:"";position:absolute;left:0;top:.28em;bottom:.28em;width:5px;border-radius:3px;background:var(--grad);
}
.article-body h3{font-size:21px;margin:28px 0 12px;color:var(--ink);}
.article-body a{color:var(--brand);border-bottom:1px solid rgba(107,43,255,.28);}
.article-body a:hover{border-bottom-color:var(--brand);}
.article-body img{border-radius:16px;margin:22px auto;box-shadow:var(--sh-1);}
.article-body figure{margin:24px 0;}
.article-body figcaption{font-size:13px;color:var(--ink-3);text-align:center;margin-top:10px;}
.article-body blockquote{
  margin:26px 0;padding:18px 22px;background:var(--brand-soft);
  border-left:4px solid transparent;
  border-image:linear-gradient(180deg,#6B2BFF,#12D8C4) 1;
  border-radius:0 var(--r-sm) var(--r-sm) 0;
  color:var(--ink-2);font-size:16px;
}
.article-body ul,.article-body ol{margin:0 0 18px;padding-left:2px;list-style:none;}
.article-body ul li,.article-body ol li{position:relative;padding-left:22px;margin-bottom:10px;}
.article-body ul li::before{
  content:"";position:absolute;left:0;top:.72em;width:8px;height:8px;border-radius:50%;
  background:var(--grad);
}
.article-body ol{counter-reset:li;}
.article-body ol li{counter-increment:li;}
.article-body ol li::before{
  content:counter(li);
  position:absolute;left:0;top:.34em;
  width:18px;height:18px;border-radius:6px;background:var(--brand-soft);
  color:var(--brand);font-size:12px;font-weight:800;
  display:flex;align-items:center;justify-content:center;
}
.article-body table{width:100%;border:1px solid var(--line);border-radius:var(--r-sm);overflow:hidden;margin:22px 0;font-size:15px;}
.article-body th,.article-body td{padding:12px 16px;border-bottom:1px solid var(--line);text-align:left;}
.article-body th{background:var(--brand-soft);color:var(--brand-deep);font-weight:700;}
.article-body tbody tr:nth-child(even){background:#FBFAFF;}
.article-body code{background:#F4F1FF;color:var(--brand-deep);padding:2px 6px;border-radius:6px;font-size:.92em;}

.empty-state{
  text-align:center;padding:56px 24px;border:1px dashed var(--line-soft);
  border-radius:var(--r-md);background:#FBFAFF;
}
.empty-state .ico{
  width:56px;height:56px;margin:0 auto 16px;border-radius:18px;background:var(--grad);
  display:flex;align-items:center;justify-content:center;color:#fff;font-size:24px;font-weight:800;
}
.empty-state h2{font-size:22px;margin-bottom:10px;}
.empty-state p{color:var(--ink-2);font-size:15px;margin-bottom:22px;}

.article-foot{margin-top:36px;padding-top:26px;border-top:1px solid var(--line);}
.article-foot .foot-note{font-size:13px;color:var(--ink-3);margin-bottom:18px;}

/* ===== 侧栏 ===== */
.article-side{position:sticky;top:96px;display:flex;flex-direction:column;gap:22px;}
.side-card{
  background:var(--card);border:1px solid var(--line);border-radius:var(--r-md);
  padding:24px;box-shadow:var(--sh-1);
}
.side-card h3{font-size:16px;font-weight:700;margin-bottom:14px;}
.toc{list-style:none;}
.toc li{margin-bottom:4px;}
.toc a{
  display:block;font-size:14px;color:var(--ink-2);line-height:1.6;
  padding:8px 0 8px 12px;border-left:3px solid transparent;border-radius:0 8px 8px 0;
}
.toc a:hover{color:var(--brand);background:#FAF8FF;}
.toc a.is-current{color:var(--ink);font-weight:600;border-left-color:transparent;
  background:linear-gradient(90deg,rgba(107,43,255,.14),rgba(18,216,196,.06));}
.toc a.is-current::before{content:"";}
.mini-list{list-style:none;}
.mini-list li{padding:14px 0;border-bottom:1px solid var(--line);}
.mini-list li:last-child{border-bottom:0;padding-bottom:0;}
.mini-list li:first-child{padding-top:0;}
.mini-list a{font-size:15px;font-weight:600;line-height:1.55;display:block;margin-bottom:6px;}
.mini-list a:hover{color:var(--brand);}
.mini-list span{font-size:12px;color:var(--ink-3);}
.side-cta{
  background:var(--dark);border-radius:var(--r-md);padding:26px 24px;color:#CFC7E6;
  border:1px solid rgba(255,255,255,.06);
}
.side-cta h3{color:#fff;font-size:17px;margin-bottom:10px;}
.side-cta p{font-size:14px;line-height:1.75;color:#B9B3D0;margin-bottom:18px;}
.side-cta .btn{width:100%;}

/* ===== 相关推荐卡组 ===== */
.rel-grid{display:grid;grid-template-columns:repeat(3,minmax(0,1fr));gap:24px;}
.card{
  background:var(--card);border:1px solid var(--line);border-radius:var(--r-md);
  overflow:hidden;display:flex;flex-direction:column;
  box-shadow:var(--sh-1);
  transition:transform .35s ease,box-shadow .35s ease,border-color .35s ease;
}
.card:hover{transform:translateY(-4px);box-shadow:var(--sh-2);border-color:#DCD6F3;}
.card-thumb{position:relative;aspect-ratio:16/9;overflow:hidden;background:linear-gradient(118deg,#EFE9FF,#DDFBF8);}
.card-thumb img{width:100%;height:100%;object-fit:cover;transition:transform .35s ease;}
.card:hover .card-thumb img{transform:scale(1.04);}
.card-body{padding:24px;display:flex;flex-direction:column;gap:12px;flex:1;}
.card-body h3{font-size:18px;line-height:1.5;font-weight:700;}
.card-body p{font-size:14px;line-height:1.75;color:var(--ink-2);}
.card-foot{margin-top:auto;display:flex;align-items:center;justify-content:space-between;gap:12px;font-size:13px;color:var(--ink-3);}
.card-foot .go{display:inline-flex;align-items:center;gap:6px;font-weight:700;color:var(--brand);}
.card-foot .go .arw{transition:transform .25s ease;}
.card:hover .card-foot .go .arw{transform:translateX(4px);}

/* ===== CTA 通栏 ===== */
.cta-band{
  background:var(--grad);border-radius:var(--r-lg);
  padding:44px 44px;color:#fff;
  display:flex;align-items:center;justify-content:space-between;gap:28px;flex-wrap:wrap;
  box-shadow:0 20px 46px rgba(107,43,255,.26);
}
.cta-band h2{color:#fff;font-size:28px;margin-bottom:10px;}
.cta-band p{color:rgba(255,255,255,.88);font-size:15px;max-width:620px;}
.cta-band .btn{background:#fff;color:var(--brand-deep);box-shadow:0 12px 26px rgba(21,12,43,.20);}
.cta-band .btn:hover{color:var(--brand-deep);transform:translateY(-1px);filter:brightness(1.04);}

/* ===== 页脚 ===== */
.site-footer{background:var(--dark);color:#B9B3D0;padding:64px 0 26px;margin-top:0;}
.footer-brand{display:flex;align-items:center;gap:12px;margin-bottom:18px;}
.site-footer .brand-mark{background:var(--grad);box-shadow:none;}
.site-footer .brand-name{display:block;color:#fff;font-size:18px;font-weight:800;line-height:1.3;}
.site-footer .brand-sub{display:block;color:#B9B3D0;font-size:12px;}
.footer-desc{font-size:14px;line-height:1.85;color:#B9B3D0;max-width:430px;}
.footer-social{display:flex;gap:10px;margin-top:20px;flex-wrap:wrap;}
.footer-social a{
  display:inline-flex;align-items:center;height:34px;padding:0 16px;border-radius:var(--r-pill);
  border:1px solid rgba(255,255,255,.16);color:#D9D4EE;font-size:13px;font-weight:600;
}
.footer-social a:hover{color:var(--accent);border-color:rgba(18,216,196,.6);}
.footer-col h4{color:#fff;font-size:15px;font-weight:700;margin-bottom:16px;}
.footer-col ul{list-style:none;}
.footer-col li{font-size:14px;line-height:1.7;margin-bottom:11px;color:#B9B3D0;}
.footer-col a{color:#B9B3D0;}
.footer-col a:hover{color:var(--accent);text-decoration:underline;}
.footer-bottom{
  margin-top:28px;padding-top:22px;border-top:1px solid rgba(255,255,255,.10);
  display:flex;justify-content:space-between;align-items:center;gap:12px;flex-wrap:wrap;
  font-size:13px;color:#8E88A8;
}

/* ===== 响应式 ===== */
@media screen and (max-width:1279px){
  .art-grid{grid-template-columns:minmax(0,1fr) 300px;gap:26px;}
  .rel-grid{gap:20px;}
}
@media screen and (max-width:1023px){
  :root{--sec:64px;}
  h1{font-size:36px;}
  h2{font-size:27px;}
  .nav-menu{display:none;}
  .header-actions .btn{display:none;}
  .nav-toggle{display:flex;}
  .mobile-drawer{display:block;}
  .drawer-mask{display:block;}
  .art-grid{grid-template-columns:minmax(0,1fr);gap:26px;}
  .article-side{position:static;order:2;}
  .article-shell{padding:32px 28px 34px;}
  .article-body{font-size:16px;max-width:100%;}
  .rel-grid{grid-template-columns:repeat(2,minmax(0,1fr));}
  .cta-band{padding:34px 28px;}
  .cta-band h2{font-size:24px;}
}
@media screen and (max-width:639px){
  :root{--sec:48px;}
  .grid-container{padding-left:20px;padding-right:20px;}
  h1{font-size:28px;}
  h2{font-size:23px;}
  .brand-sub{display:none;}
  .header-inner{height:64px;}
  .notice{font-size:13px;}
  .article-main{padding:22px 0 64px;}
  .article-shell{padding:24px 20px 28px;border-radius:var(--r-md);}
  .article-head h1{font-size:23px;}
  .article-body h2{font-size:21px;margin-top:32px;}
  .article-body h3{font-size:18px;}
  .crumb .current{max-width:100%;white-space:normal;}
  .rel-grid{grid-template-columns:minmax(0,1fr);}
  .cta-band{border-radius:var(--r-md);padding:28px 22px;}
  .cta-band .btn{width:100%;}
  .footer-bottom{justify-content:flex-start;}
}

/* roulang page: category1 */
/* ===== 设计变量：主色取自高饱和品牌紫，辅色为电光青，暖橙用于关键行动点 ===== */
:root{
  --c-primary:#6B2BFF;
  --c-primary-deep:#3D0FA8;
  --c-accent:#12D8C4;
  --c-orange:#FF7A3D;
  --c-dark:#150C2B;
  --c-text:#191233;
  --c-text-2:#5B5478;
  --c-text-3:#8B85A6;
  --c-bg:#F7F5FF;
  --c-card:#FFFFFF;
  --c-line:#ECE9F5;
  --c-soft:#F1ECFF;
  --c-field:#FBFAFF;
  --c-field-line:#E3E0EE;
  --success:#22B07D;
  --grad:linear-gradient(118deg,#6B2BFF 0%,#9B4DFF 48%,#12D8C4 100%);
  --r-sm:12px;
  --r-card:20px;
  --r-lg:28px;
  --r-pill:999px;
  --sh:0 10px 30px rgba(36,16,70,.08);
  --sh-hover:0 18px 44px rgba(36,16,70,.16);
  --sh-nav:0 6px 20px rgba(36,16,70,.10);
  --font:"PingFang SC","HarmonyOS Sans SC","Microsoft YaHei",system-ui,-apple-system,"Segoe UI",sans-serif;
}
*,*::before,*::after{box-sizing:border-box;}
html{-webkit-text-size-adjust:100%;scroll-behavior:smooth;}
body{
  margin:0;
  font-family:var(--font);
  font-size:16px;
  line-height:1.75;
  color:var(--c-text);
  background:var(--c-bg);
  overflow-x:hidden;
}
body.no-scroll{overflow:hidden;}
img{max-width:100%;display:block;border:0;}
a{color:var(--c-text);text-decoration:none;transition:color .25s ease;}
a:hover{color:var(--c-primary);}
h1,h2,h3,h4{margin:0;letter-spacing:-.01em;color:var(--c-text);}
h1{font-size:44px;line-height:1.2;font-weight:800;}
h2{font-size:30px;line-height:1.3;font-weight:700;}
h3{font-size:21px;line-height:1.4;font-weight:600;}
p{margin:0 0 16px;color:var(--c-text-2);}
ul,ol{margin:0;padding:0;list-style:none;}
button{font-family:inherit;}
:focus-visible{outline:3px solid var(--c-accent);outline-offset:2px;border-radius:6px;}

/* ===== 容器 ===== */
.grid-container{max-width:1200px;padding-left:20px;padding-right:20px;margin:0 auto;}
@media screen and (min-width:1024px){
  .grid-container{padding-left:32px;padding-right:32px;}
}
.section{padding:88px 0;}
.section-tight{padding:64px 0;}
.section-head{margin-bottom:28px;}
.section-head h2{position:relative;padding-bottom:16px;}
.title-bar-deco{display:block;width:56px;height:6px;border-radius:3px;background:var(--grad);margin-top:14px;}
.eyebrow{
  display:inline-block;
  font-size:13px;
  font-weight:700;
  letter-spacing:.04em;
  color:var(--c-primary);
  background:var(--c-soft);
  border-radius:var(--r-pill);
  padding:6px 14px;
  margin-bottom:14px;
}
.muted{color:var(--c-text-3);font-size:13px;line-height:1.6;}

/* ===== 按钮 ===== */
.btn{
  display:inline-flex;
  align-items:center;
  justify-content:center;
  gap:8px;
  min-height:48px;
  padding:0 26px;
  border-radius:var(--r-pill);
  font-size:15px;
  font-weight:700;
  border:1px solid transparent;
  cursor:pointer;
  transition:transform .25s ease, box-shadow .25s ease, filter .25s ease, background .25s ease, color .25s ease;
}
.btn-primary{background:var(--grad);color:#fff;box-shadow:0 12px 26px rgba(107,43,255,.28);}
.btn-primary:hover{color:#fff;transform:translateY(-1px);filter:brightness(1.06);box-shadow:0 16px 32px rgba(107,43,255,.34);}
.btn-primary:active{transform:translateY(0);box-shadow:0 8px 18px rgba(107,43,255,.3);}
.btn-ghost{background:#fff;color:var(--c-primary);border-color:#DCD5F5;}
.btn-ghost:hover{color:var(--c-primary-deep);border-color:var(--c-primary);transform:translateY(-1px);box-shadow:var(--sh);}
.btn-nav{min-width:132px;height:44px;min-height:44px;padding:0 20px;font-size:14px;}
.arrow{display:inline-block;transition:transform .25s ease;}
a:hover .arrow,button:hover .arrow{transform:translateX(4px);}
.link-arrow{display:inline-flex;align-items:center;gap:6px;font-size:14px;font-weight:600;color:var(--c-primary);}

/* ===== 顶部导航 ===== */
.site-header{
  position:sticky;
  top:0;
  z-index:60;
  background:rgba(255,255,255,.94);
  border-bottom:1px solid var(--c-line);
  transition:box-shadow .3s ease, background .3s ease;
}
.site-header.is-stuck{background:rgba(255,255,255,.92);box-shadow:var(--sh-nav);border-bottom-color:transparent;}
.header-inner{display:flex;align-items:center;justify-content:space-between;gap:24px;height:76px;}
.brand{display:flex;align-items:center;gap:12px;flex-shrink:0;}
.brand-mark{
  width:42px;height:42px;border-radius:14px;
  background:var(--grad);
  color:#fff;font-size:20px;font-weight:800;
  display:flex;align-items:center;justify-content:center;
  box-shadow:0 8px 18px rgba(107,43,255,.26);
}
.brand-text{display:flex;flex-direction:column;line-height:1.2;}
.brand-name{font-size:17px;font-weight:800;color:var(--c-primary-deep);}
.brand-sub{font-size:11px;color:var(--c-text-3);letter-spacing:.04em;}
.nav-menu{display:flex;align-items:center;gap:32px;}
.nav-menu a{
  position:relative;
  font-size:15px;
  font-weight:500;
  color:var(--c-text-2);
  padding:8px 0;
}
.nav-menu a::after{
  content:"";
  position:absolute;
  left:0;bottom:0;
  width:0;height:3px;border-radius:3px;
  background:var(--grad);
  transition:width .28s ease;
}
.nav-menu a:hover{color:var(--c-primary);}
.nav-menu a:hover::after,.nav-menu a.is-active::after{width:24px;}
.nav-menu a.is-active{color:var(--c-primary);font-weight:700;}
.header-actions{display:flex;align-items:center;gap:12px;}
.nav-toggle{
  display:none;
  width:44px;height:44px;
  border-radius:12px;
  border:1px solid var(--c-line);
  background:#fff;
  color:var(--c-primary);
  font-size:20px;
  cursor:pointer;
  align-items:center;justify-content:center;
  transition:background .25s ease,border-color .25s ease;
}
.nav-toggle:hover{background:var(--c-soft);border-color:#D8CDFA;}

/* ===== 移动抽屉 ===== */
.mobile-drawer{
  position:fixed;top:0;right:0;bottom:0;
  width:min(320px,84vw);
  background:#fff;
  box-shadow:-16px 0 40px rgba(36,16,70,.18);
  transform:translateX(105%);
  transition:transform .35s ease;
  z-index:90;
  padding:22px 20px 28px;
  display:flex;flex-direction:column;
}
.mobile-drawer.is-open{transform:translateX(0);}
.drawer-head{display:flex;align-items:center;justify-content:space-between;margin-bottom:20px;}
.drawer-close{
  width:40px;height:40px;border-radius:12px;border:1px solid var(--c-line);
  background:#fff;color:var(--c-text-2);font-size:18px;cursor:pointer;
}
.drawer-nav{display:flex;flex-direction:column;gap:6px;flex:1;}
.drawer-nav a{
  font-size:17px;font-weight:600;padding:14px 12px;border-radius:12px;color:var(--c-text);
}
.drawer-nav a:hover,.drawer-nav a.is-active{background:var(--c-soft);color:var(--c-primary);}
.drawer-cta{margin-top:16px;}
.drawer-cta .btn{width:100%;}
.drawer-mask{
  position:fixed;inset:0;background:rgba(21,12,43,.45);
  opacity:0;pointer-events:none;transition:opacity .3s ease;z-index:80;
}
.drawer-mask.is-open{opacity:1;pointer-events:auto;}

/* ===== 面包屑 ===== */
.breadcrumb{padding:22px 0 0;}
.breadcrumb ol{display:flex;flex-wrap:wrap;align-items:center;gap:8px;font-size:14px;color:var(--c-text-3);}
.breadcrumb li::after{content:"/";margin-left:8px;color:#C9C3DD;}
.breadcrumb li:last-child::after{content:"";}
.breadcrumb a{color:var(--c-text-3);}
.breadcrumb a:hover{color:var(--c-primary);}
.breadcrumb .current{color:var(--c-text-2);font-weight:600;}

/* ===== Hero（分类页） ===== */
.hero{
  position:relative;
  margin-top:24px;
  border-radius:var(--r-lg);
  overflow:hidden;
  min-height:360px;
  display:flex;
  align-items:center;
  background:var(--c-dark);
  box-shadow:var(--sh);
}
.hero-bg{
  position:absolute;inset:0;
  background-image:url("/assets/images/backpic/back-1.webp");
  background-size:cover;background-position:center;
  transform:scale(1.02);
}
.hero-bg::after{
  content:"";
  position:absolute;inset:0;
  background:linear-gradient(100deg,rgba(61,15,168,.94) 0%,rgba(107,43,255,.78) 42%,rgba(21,12,43,.35) 100%);
}
.hero-inner{position:relative;z-index:2;padding:56px 44px;max-width:720px;}
.hero-inner h1{color:#fff;font-size:40px;margin-bottom:16px;}
.hero-inner p{color:rgba(255,255,255,.88);font-size:18px;margin-bottom:0;max-width:620px;}
.hero-tags{display:flex;flex-wrap:wrap;gap:10px;margin-top:24px;}
.hero-tags span{
  font-size:13px;color:#fff;font-weight:600;
  background:rgba(255,255,255,.16);
  border:1px solid rgba(255,255,255,.28);
  padding:6px 14px;border-radius:var(--r-pill);
}

/* ===== 主体两栏 ===== */
.layout{display:grid;grid-template-columns:minmax(0,3fr) minmax(0,9fr);gap:24px;align-items:start;}
.side-sticky{position:sticky;top:96px;}
.toc-card{
  background:var(--c-card);
  border:1px solid var(--c-line);
  border-radius:var(--r-card);
  padding:24px;
  box-shadow:var(--sh);
}
.toc-card h2{font-size:16px;font-weight:700;margin-bottom:16px;padding-bottom:14px;border-bottom:1px solid var(--c-line);}
.toc-list{display:flex;flex-direction:column;gap:4px;}
.toc-list a{
  position:relative;
  display:block;
  font-size:14px;
  color:var(--c-text-2);
  padding:10px 12px 10px 16px;
  border-radius:10px;
  transition:background .25s ease,color .25s ease;
}
.toc-list a::before{
  content:"";position:absolute;left:0;top:12px;bottom:12px;width:3px;border-radius:3px;
  background:var(--grad);opacity:0;transition:opacity .25s ease;
}
.toc-list a:hover{background:var(--c-soft);color:var(--c-primary);}
.toc-list a.is-active{background:var(--c-soft);color:var(--c-primary);font-weight:700;}
.toc-list a.is-active::before{opacity:1;}
.toc-note{margin-top:20px;padding-top:18px;border-top:1px dashed var(--c-line);}

/* 移动端横滑标签 */
.toc-scroll{display:none;gap:10px;overflow-x:auto;padding:4px 0 10px;-webkit-overflow-scrolling:touch;}
.toc-scroll a{
  flex:0 0 auto;
  font-size:14px;font-weight:600;color:var(--c-text-2);
  background:#fff;border:1px solid var(--c-line);
  padding:9px 16px;border-radius:var(--r-pill);white-space:nowrap;
}
.toc-scroll a.is-active{background:var(--grad);color:#fff;border-color:transparent;}

/* ===== 导语块 ===== */
.lead-card{
  background:var(--c-soft);
  border-radius:var(--r-card);
  padding:28px;
  border-left:4px solid transparent;
  border-image:var(--grad) 1;
  margin-bottom:24px;
}
.lead-card h2{font-size:20px;margin-bottom:12px;}
.lead-card p{margin-bottom:10px;}
.lead-card p:last-child{margin-bottom:0;}

/* ===== 横向内容卡 ===== */
.h-card{
  display:grid;
  grid-template-columns:220px minmax(0,1fr);
  gap:24px;
  background:var(--c-card);
  border:1px solid var(--c-line);
  border-radius:var(--r-card);
  padding:24px;
  margin-bottom:24px;
  box-shadow:var(--sh);
  transition:transform .3s ease, box-shadow .3s ease, border-color .3s ease;
}
.h-card:hover{transform:translateY(-4px);box-shadow:var(--sh-hover);border-color:#DED6F8;}
.h-card-media{
  border-radius:16px;
  overflow:hidden;
  position:relative;
  aspect-ratio:4/3;
  background:linear-gradient(118deg,#EFE9FF,#DFF8F5);
}
.h-card-media img{width:100%;height:100%;object-fit:cover;transition:transform .35s ease;}
.h-card:hover .h-card-media img{transform:scale(1.04);}
.h-card-body{display:flex;flex-direction:column;}
.tag{
  display:inline-block;
  align-self:flex-start;
  font-size:12px;font-weight:700;
  color:var(--c-primary);
  background:var(--c-soft);
  border-radius:var(--r-pill);
  padding:4px 12px;
  margin-bottom:10px;
}
.h-card-body h3{font-size:20px;font-weight:700;margin-bottom:10px;}
.h-card-body h3 a{color:var(--c-text);}
.h-card-body h3 a:hover{color:var(--c-primary);}
.h-card-body p{font-size:14px;margin-bottom:16px;}
.h-card-meta{
  margin-top:auto;
  display:flex;align-items:center;justify-content:space-between;gap:16px;
  padding-top:14px;border-top:1px solid var(--c-line);
  font-size:13px;color:var(--c-text-3);
}

/* ===== 要点清单 ===== */
.panel{
  background:var(--c-card);
  border:1px solid var(--c-line);
  border-radius:var(--r-card);
  padding:28px;
  box-shadow:var(--sh);
  margin-bottom:24px;
}
.panel h2{font-size:24px;margin-bottom:18px;}
.check-list{display:flex;flex-direction:column;gap:14px;}
.check-list li{
  position:relative;
  padding-left:30px;
  font-size:15px;
  color:var(--c-text-2);
  line-height:1.7;
}
.check-list li::before{
  content:"";
  position:absolute;left:0;top:9px;
  width:12px;height:12px;border-radius:50%;
  background:var(--grad);
  box-shadow:0 0 0 4px rgba(107,43,255,.1);
}
.check-list li strong{color:var(--c-text);font-weight:700;}

/* ===== 数据条 ===== */
.stat-strip{
  display:grid;
  grid-template-columns:repeat(3,minmax(0,1fr));
  gap:16px;
  margin-bottom:24px;
}
.stat{
  background:#fff;
  border:1px solid var(--c-line);
  border-radius:var(--r-card);
  padding:20px 22px;
  box-shadow:var(--sh);
}
.stat b{
  display:block;
  font-size:32px;font-weight:800;line-height:1.1;
  color:var(--c-primary);
  font-variant-numeric:tabular-nums;
}
.stat span{font-size:13px;color:var(--c-text-3);}

/* ===== FAQ ===== */
.faq-wrap{background:var(--c-card);border:1px solid var(--c-line);border-radius:var(--r-card);padding:8px 28px;box-shadow:var(--sh);margin-bottom:24px;}
.faq-wrap > h2{font-size:24px;padding:22px 0 6px;}
ul.accordion{
  background:transparent;
  border:0;
  margin:0;
}
ul.accordion li.accordion-item{border-bottom:1px solid var(--c-line);}
ul.accordion li.accordion-item:last-child{border-bottom:0;}
ul.accordion .accordion-title{
  display:flex;align-items:center;justify-content:space-between;gap:16px;
  padding:20px 0;
  border:0;
  font-size:17px;font-weight:600;color:var(--c-text);
  background:transparent;
}
ul.accordion .accordion-title:hover{background:transparent;color:var(--c-primary);}
ul.accordion .accordion-title .sym{
  flex:0 0 28px;width:28px;height:28px;border-radius:50%;
  border:1.5px solid var(--c-primary);
  color:var(--c-primary);
  display:flex;align-items:center;justify-content:center;
  font-size:16px;line-height:1;font-weight:700;
  transition:background .25s ease,color .25s ease,border-color .25s ease;
}
ul.accordion .accordion-item.is-active .accordion-title .sym{
  background:var(--grad);color:#fff;border-color:transparent;
}
ul.accordion .accordion-content{
  border:0;
  padding:0 0 20px;
  background:transparent;
}
ul.accordion .accordion-content p{font-size:15px;line-height:1.8;margin:0;}

/* ===== CTA 带 ===== */
.cta-band{
  position:relative;
  overflow:hidden;
  border-radius:var(--r-lg);
  background:var(--grad);
  padding:44px 40px;
  display:flex;align-items:center;justify-content:space-between;gap:28px;flex-wrap:wrap;
  box-shadow:0 18px 40px rgba(107,43,255,.26);
}
.cta-band h2{color:#fff;font-size:26px;margin-bottom:10px;}
.cta-band p{color:rgba(255,255,255,.9);margin:0;font-size:15px;max-width:520px;}
.cta-band .btn-light{background:#fff;color:var(--c-primary-deep);}
.cta-band .btn-light:hover{color:var(--c-primary-deep);transform:translateY(-1px);box-shadow:0 14px 28px rgba(21,12,43,.22);}

/* ===== 页脚 ===== */
.site-footer{background:var(--c-dark);color:#B9B3D0;margin-top:88px;padding-top:64px;}
.footer-brand{display:flex;align-items:center;gap:12px;margin-bottom:16px;}
.footer-brand .brand-mark{box-shadow:none;}
.footer-brand .brand-name{color:#fff;font-size:17px;font-weight:800;display:block;}
.footer-brand .brand-sub{color:#9C95BC;font-size:11px;display:block;}
.footer-desc{color:#B9B3D0;font-size:14px;line-height:1.8;max-width:360px;}
.footer-social{display:flex;gap:10px;margin-top:18px;flex-wrap:wrap;}
.footer-social a{
  font-size:13px;font-weight:600;color:#DCD7EE;
  border:1px solid rgba(255,255,255,.18);
  border-radius:var(--r-pill);
  padding:6px 16px;
}
.footer-social a:hover{color:#12D8C4;border-color:#12D8C4;text-decoration:underline;}
.footer-col h4{font-size:15px;font-weight:700;color:#fff;margin-bottom:16px;}
.footer-col ul{display:flex;flex-direction:column;gap:10px;}
.footer-col li{font-size:14px;color:#B9B3D0;line-height:1.7;}
.footer-col a{font-size:14px;color:#B9B3D0;}
.footer-col a:hover{color:#12D8C4;text-decoration:underline;}
.footer-bottom{
  margin-top:44px;
  border-top:1px solid rgba(255,255,255,.12);
  padding:22px 0 28px;
  display:flex;flex-wrap:wrap;gap:10px;justify-content:space-between;
  font-size:13px;color:#9C95BC;
}

/* ===== 响应式 ===== */
@media screen and (max-width:1023px){
  h1{font-size:34px;}
  h2{font-size:26px;}
  .section{padding:64px 0;}
  .nav-menu{display:none;}
  .nav-toggle{display:inline-flex;}
  .btn-nav{display:none;}
  .layout{grid-template-columns:minmax(0,1fr);}
  .side-sticky{position:static;}
  .toc-card{display:none;}
  .toc-scroll{display:flex;}
  .hero-inner{padding:48px 32px;}
  .hero-inner h1{font-size:34px;}
  .hero-inner p{font-size:17px;}
  .site-footer{margin-top:64px;}
}
@media screen and (max-width:768px){
  .h-card{grid-template-columns:minmax(0,1fr);}
  .h-card-media{aspect-ratio:16/9;}
  .stat-strip{grid-template-columns:repeat(2,minmax(0,1fr));}
  .cta-band{padding:32px 24px;}
  .cta-band .btn{width:100%;}
}
@media screen and (max-width:519px){
  .section{padding:48px 0;}
  h1{font-size:28px;}
  h2{font-size:22px;}
  .hero-inner{padding:36px 22px;}
  .hero-inner h1{font-size:27px;}
  .hero-inner p{font-size:16px;}
  .hero{min-height:300px;}
  .hero-tags span{font-size:12px;padding:5px 11px;}
  .panel,.lead-card,.faq-wrap,.toc-card{padding:20px;}
  .faq-wrap{padding:4px 20px;}
  .h-card{padding:18px;}
  .stat-strip{grid-template-columns:minmax(0,1fr);}
  .brand-sub{display:none;}
  .footer-bottom{flex-direction:column;}
}

/* roulang page: category2 */
:root{
  /* 主色取高饱和品牌紫（入口感、活力），辅色取电光青（与紫色构成双色品牌渐变），
     暖橙仅用于关键行动点与数字强调，页面背景走浅紫白以降低长时间浏览的视觉疲劳 */
  --c-primary:#6B2BFF;
  --c-primary-deep:#3D0FA8;
  --c-accent:#12D8C4;
  --c-orange:#FF7A3D;
  --c-dark:#150C2B;
  --c-text:#191233;
  --c-text-2:#5B5478;
  --c-text-3:#8B85A6;
  --c-bg:#F7F5FF;
  --c-surface:#FFFFFF;
  --c-line:#ECE9F5;
  --c-line-soft:#E3E0EE;
  --c-soft:#F1ECFF;
  --c-field:#FBFAFF;
  --c-ok:#22B07D;
  --c-err:#E5484D;
  --grad:linear-gradient(118deg,#6B2BFF 0%,#9B4DFF 48%,#12D8C4 100%);
  --grad-soft:linear-gradient(118deg,#EFE9FF 0%,#E4FBFA 100%);
  --r-sm:12px;
  --r-card:20px;
  --r-lg:28px;
  --r-pill:999px;
  --sh-1:0 10px 30px rgba(36,16,70,.08);
  --sh-2:0 18px 44px rgba(36,16,70,.16);
  --sh-nav:0 6px 20px rgba(36,16,70,.10);
  --font-cn:"PingFang SC","HarmonyOS Sans SC","Microsoft YaHei",system-ui,-apple-system,"Helvetica Neue",Arial,sans-serif;
}

/* ========== 基础 reset / base ========== */
*,*::before,*::after{box-sizing:border-box;}
html{-webkit-text-size-adjust:100%;scroll-behavior:smooth;}
body{
  margin:0;
  font-family:var(--font-cn);
  font-size:16px;
  line-height:1.75;
  font-weight:400;
  color:var(--c-text);
  background:var(--c-bg);
  -webkit-font-smoothing:antialiased;
}
img{max-width:100%;display:block;border-style:none;}
a{color:var(--c-primary);text-decoration:none;transition:color .25s ease;}
a:hover{color:var(--c-primary-deep);}
h1,h2,h3,h4,p,ul,ol{margin:0;padding:0;}
ul,ol{list-style:none;}
h1,h2,h3,h4{letter-spacing:-0.01em;color:var(--c-text);}
button,input,textarea,select{font-family:inherit;font-size:inherit;}
:focus-visible{outline:3px solid var(--c-accent);outline-offset:2px;border-radius:6px;}
::selection{background:rgba(107,43,255,.18);}

/* ========== 容器 ========== */
.grid-container{max-width:1200px;margin:0 auto;padding-left:20px;padding-right:20px;}
@media screen and (min-width:1024px){
  .grid-container{padding-left:32px;padding-right:32px;}
}
.section{padding:48px 0;}
@media screen and (min-width:640px){.section{padding:64px 0;}}
@media screen and (min-width:1024px){.section{padding:88px 0;}}

.sec-head{margin-bottom:28px;}
.sec-head h2{font-size:28px;line-height:1.3;font-weight:700;}
@media screen and (min-width:1024px){.sec-head h2{font-size:32px;}}
.sec-head p{margin-top:10px;color:var(--c-text-2);font-size:15px;max-width:720px;}
.sec-bar{width:56px;height:6px;border-radius:3px;background:var(--grad);margin-bottom:16px;}
.sec-head-row{display:flex;flex-wrap:wrap;align-items:flex-end;justify-content:space-between;gap:12px;}

/* ========== 顶部导航 ========== */
.site-header{
  position:sticky;top:0;z-index:60;
  background:rgba(255,255,255,.94);
  backdrop-filter:saturate(160%) blur(10px);
  border-bottom:1px solid var(--c-line);
  transition:box-shadow .3s ease,background .3s ease;
}
.site-header.is-scrolled{box-shadow:var(--sh-nav);background:rgba(255,255,255,.97);}
.nav-bar{
  display:flex;align-items:center;justify-content:space-between;
  height:64px;gap:16px;
}
@media screen and (min-width:1024px){.nav-bar{height:76px;}}
.brand{display:flex;align-items:center;gap:10px;min-width:0;}
.brand-mark{
  width:36px;height:36px;flex:0 0 36px;border-radius:12px;
  background:var(--grad);color:#fff;font-weight:800;font-size:17px;
  display:flex;align-items:center;justify-content:center;
  box-shadow:0 8px 18px rgba(107,43,255,.28);
}
.brand-text{display:flex;flex-direction:column;min-width:0;}
.brand-name{
  font-size:16px;font-weight:800;color:var(--c-primary-deep);
  white-space:nowrap;overflow:hidden;text-overflow:ellipsis;letter-spacing:-0.01em;
}
.brand-sub{font-size:11px;color:var(--c-text-3);line-height:1.4;white-space:nowrap;}
@media screen and (min-width:640px){
  .brand-name{font-size:18px;}
  .brand-mark{width:40px;height:40px;flex-basis:40px;font-size:19px;}
  .brand-sub{font-size:12px;}
}
.nav-menu{display:none;}
@media screen and (min-width:1024px){
  .nav-menu{display:flex;align-items:center;gap:32px;}
}
.nav-menu a{
  position:relative;font-size:15px;font-weight:500;color:var(--c-text-2);
  padding:6px 0;
}
.nav-menu a::after{
  content:"";position:absolute;left:50%;bottom:-2px;width:0;height:3px;border-radius:2px;
  background:var(--grad);transform:translateX(-50%);transition:width .28s ease;
}
.nav-menu a:hover{color:var(--c-primary);}
.nav-menu a:hover::after{width:24px;}
.nav-menu a.is-active{color:var(--c-primary-deep);font-weight:700;}
.nav-menu a.is-active::after{width:24px;}
.nav-cta{
  display:none;align-items:center;gap:8px;
  min-width:132px;height:44px;padding:0 20px;
  border-radius:var(--r-pill);background:var(--grad);color:#fff;
  font-size:15px;font-weight:700;box-shadow:0 10px 22px rgba(107,43,255,.26);
  transition:transform .25s ease,filter .25s ease,box-shadow .25s ease;
}
@media screen and (min-width:1024px){.nav-cta{display:inline-flex;}}
.nav-cta:hover{color:#fff;transform:translateY(-1px);filter:brightness(1.06);box-shadow:0 14px 28px rgba(107,43,255,.32);}
.nav-cta:active{transform:translateY(0);box-shadow:0 6px 14px rgba(107,43,255,.28);}
.nav-toggle{
  width:44px;height:44px;border-radius:12px;border:1px solid var(--c-line);
  background:var(--c-surface);color:var(--c-primary-deep);font-size:18px;
  display:flex;align-items:center;justify-content:center;cursor:pointer;
  transition:border-color .25s ease,color .25s ease,box-shadow .25s ease;
}
@media screen and (min-width:1024px){.nav-toggle{display:none;}}
.nav-toggle:hover{border-color:var(--c-primary);color:var(--c-primary);box-shadow:var(--sh-1);}

/* 移动端抽屉 */
.off-canvas.is-open{box-shadow:-10px 0 40px rgba(36,16,70,.18);}
.drawer{background:#fff;padding:0;}
.drawer-head{
  display:flex;align-items:center;justify-content:space-between;
  padding:16px 20px;border-bottom:1px solid var(--c-line);
}
.drawer-close{
  width:40px;height:40px;border-radius:12px;border:1px solid var(--c-line);
  background:#fff;color:var(--c-primary-deep);cursor:pointer;
}
.drawer-body{padding:12px 0 20px;}
.drawer-body a{
  display:block;padding:16px 22px;font-size:17px;font-weight:600;color:var(--c-text);
  border-bottom:1px solid var(--c-line);
}
.drawer-body a:hover,.drawer-body a.is-active{color:var(--c-primary);background:var(--c-soft);}
.drawer-foot{padding:16px 22px 26px;}
.btn-block{width:100%;}

/* ========== 按钮 ========== */
.btn{
  display:inline-flex;align-items:center;justify-content:center;gap:8px;
  height:48px;padding:0 26px;border-radius:var(--r-pill);
  font-size:16px;font-weight:700;cursor:pointer;border:1px solid transparent;
  transition:transform .25s ease,filter .25s ease,box-shadow .25s ease,background .25s ease,color .25s ease;
}
.btn-primary{background:var(--grad);color:#fff;box-shadow:0 12px 26px rgba(107,43,255,.26);}
.btn-primary:hover{color:#fff;transform:translateY(-1px);filter:brightness(1.06);box-shadow:0 16px 32px rgba(107,43,255,.32);}
.btn-primary:active{transform:translateY(0);box-shadow:0 6px 14px rgba(107,43,255,.28);}
.btn-ghost{background:#fff;color:var(--c-primary-deep);border-color:var(--c-line);}
.btn-ghost:hover{color:var(--c-primary);border-color:var(--c-primary);transform:translateY(-1px);box-shadow:var(--sh-1);}
.btn-ghost:active{transform:translateY(0);box-shadow:none;}
.btn i{font-size:14px;}

/* ========== Hero（分类页 2 小卡） ========== */
.hero-c2{
  position:relative;overflow:hidden;
  min-height:360px;
  background:linear-gradient(118deg,#6B2BFF 0%,#9B4DFF 48%,#12D8C4 100%);
  border-radius:0 0 var(--r-lg) var(--r-lg);
}
.hero-c2::after{
  content:"";position:absolute;inset:0;
  background:radial-gradient(circle at 82% 18%,rgba(255,255,255,.24),transparent 56%);
  pointer-events:none;
}
.hero-c2-inner{
  position:relative;z-index:2;
  display:grid;grid-template-columns:1fr;gap:24px;
  padding:44px 0 40px;
}
@media screen and (min-width:1024px){
  .hero-c2-inner{grid-template-columns:7fr 5fr;align-items:center;gap:36px;padding:56px 0 52px;}
}
.hero-c2-copy{color:#fff;}
.hero-badge{
  display:inline-flex;align-items:center;gap:8px;
  padding:7px 16px;border-radius:var(--r-pill);
  background:rgba(255,255,255,.18);border:1px solid rgba(255,255,255,.34);
  font-size:13px;font-weight:600;color:#fff;margin-bottom:18px;
}
.hero-badge i{font-size:12px;color:#B9FFF5;}
.hero-c2 h1{
  color:#fff;font-size:32px;line-height:1.25;font-weight:800;
  margin-bottom:14px;text-shadow:0 2px 16px rgba(21,12,43,.28);
}
@media screen and (min-width:640px){.hero-c2 h1{font-size:40px;}}
@media screen and (min-width:1024px){.hero-c2 h1{font-size:46px;}}
.hero-c2-copy p{font-size:17px;line-height:1.7;color:rgba(255,255,255,.94);max-width:560px;}
.hero-actions{display:flex;flex-wrap:wrap;gap:12px;margin-top:26px;}
.hero-actions .btn-ghost{background:rgba(255,255,255,.96);border-color:transparent;}
.hero-c2-visual{position:relative;}
.hero-c2-visual .media{
  border-radius:var(--r-lg);overflow:hidden;height:200px;
  box-shadow:0 22px 50px rgba(21,12,43,.32);
  background:var(--grad-soft);
}
.hero-c2-visual .media img{width:100%;height:100%;object-fit:cover;display:block;}
@media screen and (min-width:640px){.hero-c2-visual .media{height:240px;}}
@media screen and (min-width:1024px){.hero-c2-visual .media{height:300px;}}
.hero-facts{
  display:flex;flex-wrap:wrap;gap:10px;margin-top:22px;
}
.hero-facts span{
  display:inline-flex;align-items:center;gap:7px;
  padding:8px 14px;border-radius:var(--r-pill);
  background:rgba(255,255,255,.16);border:1px solid rgba(255,255,255,.3);
  color:#fff;font-size:13px;font-weight:600;
}
.hero-facts i{color:#B9FFF5;font-size:12px;}

/* ========== 标签横排 ========== */
.tag-bar-wrap{padding:34px 0 0;}
.tag-bar{
  display:flex;gap:12px;overflow-x:auto;padding:4px 2px 14px;
  scrollbar-width:thin;-webkit-overflow-scrolling:touch;
}
.tag-bar::-webkit-scrollbar{height:6px;}
.tag-bar::-webkit-scrollbar-thumb{background:#DCD5F2;border-radius:3px;}
.tag{
  flex:0 0 auto;padding:10px 20px;border-radius:var(--r-pill);
  background:#fff;border:1px solid var(--c-line);color:var(--c-text-2);
  font-size:14px;font-weight:600;cursor:pointer;
  transition:color .25s ease,border-color .25s ease,box-shadow .25s ease,background .25s ease,transform .25s ease;
}
.tag:hover{color:var(--c-primary);border-color:var(--c-primary);transform:translateY(-1px);box-shadow:var(--sh-1);}
.tag.is-active{background:var(--grad);border-color:transparent;color:#fff;box-shadow:0 10px 22px rgba(107,43,255,.24);}

/* ========== 马赛克网格 ========== */
.mosaic{display:grid;grid-template-columns:1fr;gap:24px;}
@media screen and (min-width:640px){.mosaic{grid-template-columns:repeat(2,1fr);}}
@media screen and (min-width:1024px){
  .mosaic{grid-template-columns:repeat(12,1fr);}
  .mosaic .span-8{grid-column:span 8;}
  .mosaic .span-4{grid-column:span 4;}
  .mosaic .span-6{grid-column:span 6;}
}
.m-card{
  background:var(--c-surface);border:1px solid var(--c-line);border-radius:var(--r-card);
  padding:24px;height:100%;display:flex;flex-direction:column;
  box-shadow:var(--sh-1);
  transition:transform .35s ease,box-shadow .35s ease,border-color .35s ease;
}
.m-card:hover{transform:translateY(-4px);box-shadow:var(--sh-2);border-color:#DFD8F5;}
.m-card-media{
  border-radius:16px;overflow:hidden;background:var(--grad-soft);
  height:170px;margin-bottom:18px;
}
.m-card-media.tall{height:240px;}
@media screen and (min-width:1024px){.m-card-media.tall{height:300px;}}
.m-card-media img{width:100%;height:100%;object-fit:cover;transition:transform .35s ease;}
.m-card:hover .m-card-media img{transform:scale(1.04);}
.pill{
  display:inline-flex;align-items:center;gap:6px;align-self:flex-start;
  padding:5px 12px;border-radius:var(--r-pill);
  background:var(--c-soft);color:var(--c-primary);
  font-size:12px;font-weight:700;margin-bottom:12px;
}
.m-card h3{font-size:19px;line-height:1.4;font-weight:700;margin-bottom:10px;}
.m-card h3 a{color:var(--c-text);}
.m-card h3 a:hover{color:var(--c-primary);}
.m-card p{font-size:14px;line-height:1.75;color:var(--c-text-2);}
.m-card .grow{flex:1 1 auto;}
.m-meta{
  display:flex;align-items:center;justify-content:space-between;gap:12px;
  margin-top:18px;padding-top:16px;border-top:1px solid var(--c-line);
  font-size:13px;color:var(--c-text-3);
}
.m-meta .num{font-variant-numeric:tabular-nums;font-weight:800;color:var(--c-text-2);}
.m-link{display:inline-flex;align-items:center;gap:6px;color:var(--c-primary);font-weight:700;font-size:14px;}
.m-link i{transition:transform .25s ease;}
.m-link:hover i{transform:translateX(4px);}
.mosaic-aside{display:grid;grid-template-columns:1fr;gap:24px;align-content:stretch;}
@media screen and (min-width:640px){.mosaic-aside{grid-template-columns:1fr 1fr;}}
@media screen and (min-width:1024px){.mosaic-aside{grid-template-columns:1fr;}}
.m-card.compact{padding:22px;}
.m-card.compact .m-card-media{height:120px;}
.m-card.compact h3{font-size:17px;}

/* 数据徽章条 */
.stat-strip{
  display:grid;grid-template-columns:repeat(2,1fr);gap:14px;margin-top:28px;
}
@media screen and (min-width:1024px){.stat-strip{grid-template-columns:repeat(4,1fr);gap:24px;}}
.stat{
  background:#fff;border:1px solid var(--c-line);border-radius:var(--r-card);
  padding:20px;box-shadow:var(--sh-1);
  transition:transform .3s ease,box-shadow .3s ease;
}
.stat:hover{transform:translateY(-4px);box-shadow:var(--sh-2);}
.stat .num{
  font-size:32px;font-weight:800;line-height:1.1;color:var(--c-primary-deep);
  font-variant-numeric:tabular-nums;
}
.stat .lbl{font-size:13px;color:var(--c-text-3);margin-top:6px;}

/* ========== 对比表 ========== */
.cmp-wrap{
  background:#fff;border:1px solid var(--c-line);border-radius:var(--r-card);
  padding:24px;box-shadow:var(--sh-1);overflow-x:auto;
}
@media screen and (min-width:1024px){.cmp-wrap{padding:32px;}}
.cmp-table{width:100%;border-collapse:collapse;min-width:520px;}
.cmp-table th,.cmp-table td{
  padding:16px 18px;font-size:14px;text-align:left;vertical-align:top;
  border-bottom:1px solid var(--c-line);
}
.cmp-table thead th{
  background:var(--c-soft);color:var(--c-primary-deep);
  font-weight:700;font-size:14px;border-bottom:1px solid #E2D8FF;
}
.cmp-table thead th:first-child{border-radius:12px 0 0 0;}
.cmp-table thead th:last-child{border-radius:0 12px 0 0;}
.cmp-table tbody tr:nth-child(even){background:#FCFBFF;}
.cmp-table tbody tr:hover{background:#F7F4FF;}
.cmp-table td strong{color:var(--c-text);font-weight:700;}
.cmp-table td span{color:var(--c-text-2);}

/* ========== 要点清单 ========== */
.check-list{display:grid;grid-template-columns:1fr;gap:16px;}
@media screen and (min-width:640px){.check-list{grid-template-columns:repeat(2,1fr);}}
.check-item{
  display:flex;gap:14px;background:#fff;border:1px solid var(--c-line);
  border-radius:var(--r-card);padding:20px;box-shadow:var(--sh-1);
  transition:transform .3s ease,box-shadow .3s ease;
}
.check-item:hover{transform:translateY(-4px);box-shadow:var(--sh-2);}
.check-item .dot{
  flex:0 0 34px;width:34px;height:34px;border-radius:12px;
  background:var(--grad);color:#fff;display:flex;align-items:center;justify-content:center;
  font-size:14px;
}
.check-item h3{font-size:17px;font-weight:700;margin-bottom:6px;}
.check-item p{font-size:14px;color:var(--c-text-2);line-height:1.75;}

/* ========== FAQ ========== */
.faq-card{
  background:#fff;border:1px solid var(--c-line);border-radius:var(--r-card);
  padding:8px 24px;box-shadow:var(--sh-1);
}
@media screen and (min-width:1024px){.faq-card{padding:8px 32px;}}
.accordion{border:none;background:transparent;margin:0;}
.accordion-item{border-bottom:1px solid var(--c-line);background:transparent;}
.accordion-item:last-child{border-bottom:none;}
.accordion-title{
  border:none;background:transparent;padding:20px 0;
  font-size:17px;font-weight:600;color:var(--c-text);
  display:flex;align-items:center;justify-content:space-between;gap:16px;
  transition:color .25s ease;
}
.accordion-title::before{display:none!important;}
.accordion-title:hover{color:var(--c-primary);}
.accordion-title .pm{
  flex:0 0 28px;width:28px;height:28px;border-radius:50%;
  border:1px solid var(--c-primary);color:var(--c-primary);
  display:flex;align-items:center;justify-content:center;font-size:13px;
  transition:background .25s ease,color .25s ease,border-color .25s ease;
}
.accordion-item.is-active .accordion-title{color:var(--c-primary-deep);}
.accordion-item.is-active .accordion-title .pm{background:var(--grad);color:#fff;border-color:transparent;}
.accordion-content{
  border:none;background:transparent;padding:0 0 20px;
  font-size:15px;line-height:1.8;color:var(--c-text-2);
}
.accordion-content p{margin-bottom:10px;}
.accordion-content p:last-child{margin-bottom:0;}

/* ========== CTA 横带 ========== */
.cta-band{
  background:var(--grad);border-radius:var(--r-lg);
  padding:32px 24px;color:#fff;position:relative;overflow:hidden;
  box-shadow:0 20px 44px rgba(107,43,255,.24);
}
@media screen and (min-width:1024px){.cta-band{padding:44px 40px;}}
.cta-band::after{
  content:"";position:absolute;right:-60px;top:-60px;width:220px;height:220px;
  border-radius:50%;background:rgba(255,255,255,.14);
}
.cta-inner{
  position:relative;z-index:2;
  display:grid;grid-template-columns:1fr;gap:22px;align-items:center;
}
@media screen and (min-width:1024px){
  .cta-inner{grid-template-columns:8fr 4fr;gap:32px;}
  .cta-inner .cta-action{text-align:right;}
}
.cta-band h2{color:#fff;font-size:24px;font-weight:800;line-height:1.35;margin-bottom:10px;}
@media screen and (min-width:1024px){.cta-band h2{font-size:28px;}}
.cta-band p{color:rgba(255,255,255,.92);font-size:15px;max-width:640px;}
.cta-band .btn-ghost{background:#fff;color:var(--c-primary-deep);border-color:transparent;}
.cta-band .btn-ghost:hover{color:var(--c-primary);}

/* 公告条 */
.notice{
  display:flex;flex-wrap:wrap;align-items:center;gap:12px;justify-content:space-between;
  background:var(--c-soft);border-radius:var(--r-sm);
  border-left:4px solid transparent;
  border-image:var(--grad) 1;
  padding:14px 18px;margin-bottom:28px;
}
.notice span{font-size:14px;color:var(--c-text-2);}
.notice a{font-size:14px;font-weight:700;}

/* ========== 页脚 ========== */
.site-footer{background:var(--c-dark);color:#B9B3D0;padding:56px 0 0;margin-top:0;}
@media screen and (min-width:1024px){.site-footer{padding:72px 0 0;}}
.footer-brand{display:flex;align-items:center;gap:12px;margin-bottom:16px;}
.footer-brand .brand-mark{
  width:40px;height:40px;flex:0 0 40px;border-radius:12px;
  background:var(--grad);color:#fff;font-weight:800;
  display:flex;align-items:center;justify-content:center;
}
.footer-brand .brand-text{display:flex;flex-direction:column;}
.footer-brand .brand-name{font-size:17px;font-weight:800;color:#fff;}
.footer-brand .brand-sub{font-size:12px;color:#9C95BB;}
.footer-desc{font-size:14px;line-height:1.8;color:#B9B3D0;max-width:420px;}
.footer-social{display:flex;flex-wrap:wrap;gap:10px;margin-top:18px;}
.footer-social a{
  display:inline-flex;align-items:center;padding:8px 16px;border-radius:var(--r-pill);
  border:1px solid rgba(255,255,255,.18);color:#CFC9E4;font-size:13px;font-weight:600;
  transition:border-color .25s ease,color .25s ease,background .25s ease,transform .25s ease;
}
.footer-social a:hover{color:var(--c-accent);border-color:var(--c-accent);transform:translateY(-1px);text-decoration:underline;}
.footer-col h4{font-size:15px;font-weight:700;color:#fff;margin-bottom:16px;}
.footer-col ul li{margin-bottom:12px;font-size:14px;color:#B9B3D0;}
.footer-col ul li a{color:#B9B3D0;font-size:14px;}
.footer-col ul li a:hover{color:var(--c-accent);text-decoration:underline;}
.footer-bottom{
  margin-top:40px;padding:22px 0 28px;border-top:1px solid rgba(255,255,255,.1);
  display:flex;flex-wrap:wrap;gap:10px;justify-content:space-between;
  font-size:13px;color:#9C95BB;
}

/* ========== 响应式收尾 ========== */
@media screen and (max-width:639px){
  .hero-c2{border-radius:0 0 20px 20px;}
  .hero-c2-copy p{font-size:15px;}
  .hero-actions .btn{width:100%;}
  .m-card{padding:20px;}
  .brand-sub{display:none;}
}
@media screen and (min-width:640px) and (max-width:1023px){
  .hero-c2-inner{padding:40px 0 36px;}
}
@media screen and (min-width:1280px){
  .hero-c2 h1{font-size:50px;}
}
.cmp-caption{
  font-size:13px;color:var(--c-text-3);margin-top:14px;
}