/* roulang page: index */
:root{
  --brand-600:#5B3DF5;
  --brand-500:#7A5CFF;
  --brand-400:#A78BFF;
  --accent-500:#FF6B4A;
  --accent-100:#FFE6DF;
  --ink-900:#14121F;
  --ink-600:#5C5870;
  --ink-400:#8B8798;
  --bg-050:#F7F5FF;
  --bg-100:#EFEBFF;
  --line:#E8E4F5;
  --white:#FFFFFF;
  --grad-brand:linear-gradient(135deg,#5B3DF5 0%,#8B4BFF 48%,#FF6B4A 100%);
  --grad-deep:linear-gradient(160deg,#14121F 0%,#2A2340 100%);
  --r-sm:10px;
  --r-md:16px;
  --r-lg:24px;
  --r-xl:32px;
  --r-pill:999px;
  --sh-1:0 1px 2px rgba(20,18,31,.04),0 8px 24px -12px rgba(91,61,245,.18);
  --sh-2:0 24px 60px -24px rgba(91,61,245,.35);
}
*,*::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","Source Han Sans SC",system-ui,sans-serif;
  font-size:16px;
  line-height:28px;
  color:var(--ink-600);
  background:var(--bg-050);
  -webkit-font-smoothing:antialiased;
}
h1,h2,h3,h4{margin:0;color:var(--ink-900);font-weight:700;font-family:inherit;}
h1{font-size:44px;line-height:52px;}
h2{font-size:30px;line-height:40px;}
h3{font-size:22px;line-height:32px;font-weight:600;}
h4{font-size:18px;line-height:28px;font-weight:600;}
p{margin:0;}
a{color:inherit;text-decoration:none;transition:color .2s ease;}
img{max-width:100%;display:block;border:0;}
ul{list-style:none;margin:0;padding:0;}
button,input{font-family:inherit;}
button{cursor:pointer;border:0;background:none;}
.container{max-width:1200px;margin:0 auto;padding:0 24px;width:100%;}
.section{padding:96px 0;}
.section-alt{background:var(--bg-100);}
.section-head{display:flex;align-items:flex-end;justify-content:space-between;gap:24px;margin-bottom:32px;}
.section-title{font-size:30px;line-height:40px;font-weight:700;color:var(--ink-900);}
.section-desc{margin-top:12px;font-size:16px;line-height:28px;color:var(--ink-600);max-width:720px;}
.link-more{font-size:15px;font-weight:600;color:var(--brand-600);white-space:nowrap;display:inline-flex;align-items:center;gap:8px;}
.link-more:hover{color:var(--accent-500);}
.link-more i{transition:transform .2s ease;}
.link-more:hover i{transform:translateX(4px);}

/* ============ 按钮 ============ */
.btn{
  display:inline-flex;align-items:center;justify-content:center;gap:8px;
  font-size:15px;font-weight:600;line-height:1;
  padding:14px 28px;border-radius:var(--r-pill);
  transition:transform .2s ease,box-shadow .2s ease,background .2s ease,border-color .2s ease,filter .2s ease;
  white-space:nowrap;
}
.btn-primary{background:var(--grad-brand);color:#fff;box-shadow:var(--sh-1);}
.btn-primary:hover{transform:translateY(-2px);box-shadow:var(--sh-2);filter:brightness(1.05);color:#fff;}
.btn-primary:active{transform:translateY(0);}
.btn-secondary{background:#fff;color:var(--brand-600);border:1px solid var(--line);}
.btn-secondary:hover{border-color:var(--brand-600);background:#F3EFFF;color:var(--brand-600);}
.btn-light{background:transparent;color:#fff;border:1px solid rgba(255,255,255,.55);}
.btn-light:hover{background:rgba(255,255,255,.14);color:#fff;border-color:#fff;}
.btn:focus-visible,a:focus-visible,summary:focus-visible{outline:2px solid var(--brand-400);outline-offset:2px;}
.btn[disabled]{opacity:.5;cursor:not-allowed;}

/* ============ 导航 ============ */
.site-header{
  position:sticky;top:0;z-index:200;
  background:rgba(255,255,255,.82);
  -webkit-backdrop-filter:blur(12px);
  backdrop-filter:blur(12px);
  transition:box-shadow .25s ease,border-color .25s ease;
  border-bottom:1px solid transparent;
}
.site-header.is-scrolled{border-bottom-color:var(--line);box-shadow:var(--sh-1);}
.nav-inner{display:flex;align-items:center;gap:28px;height:68px;}
.logo{display:inline-flex;align-items:center;gap:10px;flex-shrink:0;}
.logo-mark{
  position:relative;width:40px;height:40px;border-radius:12px;
  background:var(--grad-brand);flex-shrink:0;display:block;
}
.logo-mark .lm-a,.logo-mark .lm-b{position:absolute;height:9px;border-radius:3px;background:rgba(255,255,255,.95);}
.logo-mark .lm-a{left:8px;top:10px;width:16px;}
.logo-mark .lm-b{left:15px;top:21px;width:16px;background:rgba(255,255,255,.7);}
.logo-mark .lm-dot{position:absolute;right:9px;top:9px;width:5px;height:5px;border-radius:50%;background:#fff;}
.logo-text{font-size:17px;font-weight:700;color:var(--ink-900);letter-spacing:0;line-height:1;}
.nav-menu{display:flex;align-items:center;gap:28px;flex:1;}
.nav-menu a{position:relative;display:inline-block;padding:22px 0;font-size:15px;font-weight:600;color:var(--ink-600);}
.nav-menu a::after{
  content:"";position:absolute;left:50%;bottom:16px;width:0;height:2px;
  background:var(--grad-brand);border-radius:2px;transform:translateX(-50%);
  transition:width .25s ease;
}
.nav-menu a:hover{color:var(--brand-600);}
.nav-menu a.active{color:var(--brand-600);}
.nav-menu a.active::after{width:20px;}
.nav-actions{display:flex;align-items:center;gap:14px;margin-left:auto;}
.search-box{
  display:flex;align-items:center;gap:8px;width:270px;height:40px;
  padding:0 10px 0 12px;border:1px solid var(--line);border-radius:var(--r-sm);
  background:#fff;transition:border-color .2s ease,box-shadow .2s ease;
}
.search-box i{color:var(--ink-400);font-size:14px;}
.search-box input{border:0;outline:0;background:transparent;flex:1;font-size:14px;color:var(--ink-900);min-width:0;}
.search-box input::placeholder{color:var(--ink-400);}
.search-box:focus-within{border-color:var(--brand-600);box-shadow:0 0 0 3px rgba(122,92,255,.22);}
.kbd{
  font-size:11px;font-weight:600;color:var(--ink-400);background:var(--bg-100);
  border-radius:6px;padding:2px 6px;line-height:16px;letter-spacing:.02em;flex-shrink:0;
}
.icon-btn{
  width:40px;height:40px;border-radius:50%;display:inline-flex;align-items:center;justify-content:center;
  color:var(--ink-600);background:transparent;transition:background .2s ease,color .2s ease;flex-shrink:0;
}
.icon-btn:hover{background:var(--bg-100);color:var(--brand-600);}
.nav-toggle{display:none;width:44px;height:44px;border-radius:var(--r-sm);color:var(--ink-900);font-size:18px;}
.nav-toggle:hover{background:var(--bg-100);}
.drawer{
  display:none;position:fixed;inset:68px 0 0 0;background:#fff;z-index:190;
  padding:24px;overflow-y:auto;border-top:1px solid var(--line);
}
.drawer.is-open{display:block;}
.drawer .search-box{width:100%;margin-bottom:20px;}
.drawer-nav{display:block;}
.drawer-nav a{
  display:flex;align-items:center;justify-content:space-between;
  font-size:18px;line-height:56px;font-weight:600;color:var(--ink-900);
  border-bottom:1px solid var(--line);
}
.drawer-nav a.active{color:var(--brand-600);}
.drawer .btn{width:100%;margin-top:24px;}

/* ============ Hero ============ */
.hero{
  position:relative;overflow:hidden;background:var(--grad-deep);
  min-height:560px;display:flex;align-items:center;
  border-radius:0 0 var(--r-xl) var(--r-xl);
}
.hero-bg{
  position:absolute;inset:0;
  background-image:url('/assets/images/backpic/back-1.png');
  background-size:cover;background-position:center;opacity:.42;
}
.hero-overlay{
  position:absolute;inset:0;
  background:linear-gradient(120deg,rgba(20,18,31,.92) 0%,rgba(42,35,64,.78) 55%,rgba(91,61,245,.55) 100%);
}
.hero-dots{
  position:absolute;inset:0;opacity:.06;
  background-image:radial-gradient(#fff 1px,transparent 1px);
  background-size:18px 18px;
}
.hero-inner{position:relative;z-index:2;padding:72px 24px;max-width:760px;}
.hero-badges{display:flex;flex-wrap:wrap;gap:10px;margin-bottom:24px;}
.badge{
  display:inline-flex;align-items:center;gap:6px;font-size:12px;font-weight:600;
  line-height:18px;letter-spacing:.02em;padding:6px 12px;border-radius:var(--r-pill);
}
.badge-cat{background:var(--bg-100);color:var(--brand-600);}
.badge-data{
  color:#fff;background:rgba(255,255,255,.08);
  border:1px solid rgba(167,139,255,.55);
}
.badge-data b{color:var(--accent-500);font-weight:700;font-size:13px;}
.badge-solid{background:rgba(255,255,255,.14);color:#fff;border:1px solid rgba(255,255,255,.22);}
.hero h1{color:#fff;font-size:44px;line-height:54px;margin-bottom:18px;}
.hero-sub{color:rgba(255,255,255,.8);font-size:17px;line-height:30px;max-width:580px;margin-bottom:32px;}
.hero-actions{display:flex;flex-wrap:wrap;gap:14px;}
.hero-panel{
  position:absolute;right:40px;bottom:48px;z-index:3;
  min-width:300px;padding:22px 24px;border-radius:20px;
  background:rgba(255,255,255,.14);
  -webkit-backdrop-filter:blur(16px);
  backdrop-filter:blur(16px);
  border:1px solid rgba(255,255,255,.22);
  box-shadow:0 24px 60px -24px rgba(0,0,0,.55);
  display:flex;gap:28px;
}
.panel-item{text-align:left;}
.panel-num{font-size:26px;line-height:32px;font-weight:700;color:#fff;}
.panel-num em{font-style:normal;color:var(--accent-500);}
.panel-label{font-size:13px;line-height:20px;color:rgba(255,255,255,.72);margin-top:4px;}

/* ============ 合集目录 ============ */
.catalog-list{display:flex;flex-wrap:wrap;gap:14px;}
.catalog-pill{
  display:inline-flex;align-items:center;gap:12px;
  padding:14px 20px;border-radius:var(--r-pill);
  background:#fff;border:1px solid var(--line);box-shadow:var(--sh-1);
  transition:transform .2s ease,border-color .2s ease,box-shadow .2s ease;
}
.catalog-pill:hover{transform:translateY(-2px);border-color:var(--brand-400);box-shadow:var(--sh-2);}
.catalog-num{
  width:24px;height:24px;border-radius:50%;flex-shrink:0;
  display:inline-flex;align-items:center;justify-content:center;
  font-size:12px;font-weight:700;color:var(--brand-600);background:var(--bg-100);
}
.catalog-name{font-size:15px;font-weight:600;color:var(--ink-900);}
.catalog-count{font-size:12px;font-weight:600;color:var(--ink-400);background:var(--bg-050);border-radius:var(--r-pill);padding:3px 10px;}

/* ============ 精选条目 ============ */
.feat-card{
  background:#fff;border:1px solid var(--line);border-radius:var(--r-lg);
  overflow:hidden;box-shadow:var(--sh-1);height:100%;
  display:flex;flex-direction:column;
  transition:transform .25s ease,box-shadow .25s ease,border-color .25s ease;
}
.feat-card:hover{transform:translateY(-3px);box-shadow:var(--sh-2);border-color:var(--brand-400);}
.feat-cover{position:relative;width:100%;aspect-ratio:16/10;overflow:hidden;background:var(--bg-100);}
.feat-cover img{width:100%;height:100%;object-fit:cover;transition:transform .4s ease;}
.feat-card:hover .feat-cover img{transform:scale(1.04);}
.feat-cover .badge-cat{position:absolute;left:16px;top:16px;background:#fff;}
.feat-body{padding:22px 24px 24px;display:flex;flex-direction:column;gap:12px;flex:1;}
.feat-body h3 a:hover{color:var(--brand-600);}
.feat-body p{font-size:15px;line-height:26px;color:var(--ink-600);display:-webkit-box;-webkit-line-clamp:2;-webkit-box-orient:vertical;overflow:hidden;}
.meta-row{display:flex;align-items:center;gap:14px;font-size:13px;line-height:22px;color:var(--ink-400);flex-wrap:wrap;}
.meta-row i{margin-right:5px;}
.feat-link{margin-top:auto;font-size:14px;font-weight:600;color:var(--brand-600);display:inline-flex;align-items:center;gap:6px;}
.feat-card:hover .feat-link{color:var(--accent-500);}
.feat-side{display:flex;flex-direction:column;gap:24px;height:100%;}
.feat-mini{
  background:#fff;border:1px solid var(--line);border-radius:var(--r-lg);
  padding:18px;display:flex;gap:16px;box-shadow:var(--sh-1);flex:1;
  transition:transform .25s ease,box-shadow .25s ease,border-color .25s ease;
}
.feat-mini:hover{transform:translateY(-3px);box-shadow:var(--sh-2);border-color:var(--brand-400);}
.feat-mini .mini-img{width:104px;height:104px;border-radius:var(--r-md);overflow:hidden;flex-shrink:0;background:var(--bg-100);}
.feat-mini .mini-img img{width:100%;height:100%;object-fit:cover;}
.feat-mini .mini-body{display:flex;flex-direction:column;gap:8px;min-width:0;}
.feat-mini h4 a:hover{color:var(--brand-600);}
.feat-mini p{font-size:14px;line-height:23px;color:var(--ink-600);display:-webkit-box;-webkit-line-clamp:2;-webkit-box-orient:vertical;overflow:hidden;}

/* ============ 数据带 ============ */
.stat-band{background:var(--grad-deep);border-radius:var(--r-xl);padding:44px 24px;position:relative;overflow:hidden;}
.stat-band::after{
  content:"";position:absolute;inset:0;opacity:.06;
  background-image:radial-gradient(#fff 1px,transparent 1px);background-size:20px 20px;
}
.stat-grid{position:relative;z-index:2;display:grid;grid-template-columns:repeat(4,1fr);gap:24px;text-align:center;}
.stat-item .stat-num{font-size:34px;line-height:42px;font-weight:700;color:#fff;}
.stat-item .stat-num em{font-style:normal;color:var(--accent-500);}
.stat-item .stat-label{font-size:14px;line-height:24px;color:rgba(255,255,255,.72);margin-top:6px;}

/* ============ 最新信息 ============ */
.post-list{background:#fff;border:1px solid var(--line);border-radius:var(--r-lg);overflow:hidden;box-shadow:var(--sh-1);}
.post-item{
  display:flex;gap:20px;padding:20px 24px;border-bottom:1px solid var(--line);
  transition:background .2s ease;
}
.post-item:last-child{border-bottom:0;}
.post-item:hover{background:var(--bg-050);}
.post-thumb{width:120px;height:80px;border-radius:12px;overflow:hidden;flex-shrink:0;background:var(--bg-100);}
.post-thumb img{width:100%;height:100%;object-fit:cover;}
.post-body{display:flex;flex-direction:column;gap:8px;min-width:0;flex:1;}
.post-body h3{font-size:17px;line-height:26px;font-weight:600;}
.post-body h3 a:hover{color:var(--brand-600);}
.post-body p{font-size:14px;line-height:23px;color:var(--ink-600);display:-webkit-box;-webkit-line-clamp:2;-webkit-box-orient:vertical;overflow:hidden;}
.post-meta{display:flex;align-items:center;gap:12px;flex-wrap:wrap;}
.post-meta .badge-cat{padding:3px 10px;}
.post-time{font-size:13px;color:var(--ink-400);}
.post-link{font-size:14px;font-weight:600;color:var(--brand-600);align-self:flex-start;display:inline-flex;align-items:center;gap:6px;}
.post-link:hover{color:var(--accent-500);}
.empty-state{
  height:240px;border:1px dashed var(--brand-400);border-radius:var(--r-lg);
  display:flex;flex-direction:column;align-items:center;justify-content:center;gap:16px;
  color:var(--ink-400);font-size:15px;background:#fff;
}

/* ============ 流程 ============ */
.steps{display:grid;grid-template-columns:repeat(4,1fr);gap:24px;}
.step{
  background:#fff;border:1px solid var(--line);border-radius:var(--r-lg);
  padding:26px 24px;box-shadow:var(--sh-1);position:relative;
  transition:transform .25s ease,box-shadow .25s ease;
}
.step:hover{transform:translateY(-3px);box-shadow:var(--sh-2);}
.step-num{
  width:34px;height:34px;border-radius:var(--r-sm);background:var(--grad-brand);color:#fff;
  display:inline-flex;align-items:center;justify-content:center;font-weight:700;font-size:15px;margin-bottom:16px;
}
.step h4{margin-bottom:8px;}
.step p{font-size:14px;line-height:24px;color:var(--ink-600);}

/* ============ FAQ ============ */
.faq-layout{display:grid;grid-template-columns:minmax(0,5fr) minmax(0,7fr);gap:48px;align-items:start;}
.faq-list{background:#fff;border:1px solid var(--line);border-radius:var(--r-lg);overflow:hidden;box-shadow:var(--sh-1);}
.faq-item{border-bottom:1px solid var(--line);position:relative;}
.faq-item:last-child{border-bottom:0;}
.faq-item::before{
  content:"";position:absolute;left:0;top:0;bottom:0;width:3px;
  background:var(--grad-brand);opacity:0;transition:opacity .2s ease;
}
.faq-item[open]::before{opacity:1;}
.faq-item summary{
  list-style:none;cursor:pointer;padding:20px 56px 20px 24px;position:relative;
  font-size:17px;font-weight:600;color:var(--ink-900);transition:color .2s ease;
}
.faq-item summary::-webkit-details-marker{display:none;}
.faq-item summary::after{
  content:"+";position:absolute;right:24px;top:50%;transform:translateY(-50%);
  font-size:22px;font-weight:400;color:var(--brand-600);transition:transform .2s ease;
}
.faq-item[open] summary::after{transform:translateY(-50%) rotate(45deg);}
.faq-item summary:hover{color:var(--brand-600);}
.faq-answer{padding:0 56px 22px 24px;font-size:15px;line-height:26px;color:var(--ink-600);}
.faq-aside-card{
  margin-top:24px;background:var(--bg-100);border-radius:var(--r-lg);padding:24px;
}
.faq-aside-card p{font-size:14px;line-height:24px;color:var(--ink-600);margin-bottom:16px;}

/* ============ CTA ============ */
.cta-section{
  background:var(--grad-deep);border-radius:var(--r-xl);padding:56px 56px;
  display:flex;align-items:center;justify-content:space-between;gap:40px;
  position:relative;overflow:hidden;
}
.cta-section::after{
  content:"";position:absolute;right:-80px;top:-80px;width:320px;height:320px;border-radius:50%;
  background:radial-gradient(circle,rgba(255,107,74,.35) 0%,rgba(255,107,74,0) 70%);
}
.cta-text{position:relative;z-index:2;max-width:620px;}
.cta-text h2{color:#fff;margin-bottom:12px;}
.cta-text p{color:rgba(255,255,255,.76);font-size:16px;line-height:28px;}
.cta-actions{position:relative;z-index:2;display:flex;align-items:center;gap:14px;flex-shrink:0;}
.cta-circle{
  width:54px;height:54px;border-radius:50%;display:inline-flex;align-items:center;justify-content:center;
  background:rgba(255,255,255,.1);border:1px solid rgba(255,255,255,.3);color:#fff;font-size:17px;
  transition:background .2s ease,color .2s ease,transform .2s ease;
}
.cta-circle:hover{background:#fff;color:var(--brand-600);transform:translateY(-2px);}
.cta-domain{margin-top:16px;font-size:13px;color:var(--ink-400);position:relative;z-index:2;}
.cta-domain a{color:var(--brand-600);}

/* ============ 页脚 ============ */
.site-footer{background:#14121F;color:rgba(255,255,255,.72);margin-top:96px;}
.footer-top{padding:72px 0 48px;}
.footer-grid{display:grid;grid-template-columns:1.6fr 1fr 1fr 1fr;gap:40px;}
.footer-brand{display:flex;align-items:center;gap:10px;margin-bottom:18px;}
.footer-logo-text{font-size:17px;font-weight:700;color:#fff;letter-spacing:0;}
.footer-desc{font-size:14px;line-height:24px;color:rgba(255,255,255,.66);margin-bottom:12px;}
.footer-desc.muted{color:rgba(255,255,255,.45);}
.footer-col h4{color:#fff;font-size:15px;line-height:24px;font-weight:600;margin-bottom:18px;}
.footer-links{display:flex;flex-direction:column;gap:12px;}
.footer-links a{font-size:14px;line-height:22px;color:#A78BFF;}
.footer-links a:hover{color:var(--accent-500);}
.footer-bottom{
  border-top:1px solid rgba(255,255,255,.1);padding:22px 0;
  display:flex;align-items:center;justify-content:space-between;gap:16px;flex-wrap:wrap;
  font-size:13px;line-height:22px;color:rgba(255,255,255,.45);
}
.footer-bottom a{color:rgba(255,255,255,.6);}
.footer-bottom a:hover{color:var(--accent-500);}

/* ============ 响应式 ============ */
@media screen and (max-width:1200px){
  .hero-panel{right:24px;bottom:32px;min-width:270px;gap:20px;padding:18px 20px;}
  .faq-layout{grid-template-columns:1fr;gap:32px;}
  .footer-grid{grid-template-columns:1.4fr 1fr 1fr;gap:32px;}
}
@media screen and (max-width:900px){
  .section{padding:72px 0;}
  .nav-menu{display:none;}
  .search-box{display:none;}
  .nav-toggle{display:inline-flex;align-items:center;justify-content:center;}
  .nav-actions{gap:10px;}
  .nav-actions .btn-primary{display:none;}
  h1{font-size:34px;line-height:42px;}
  .hero h1{font-size:34px;line-height:44px;}
  .hero{min-height:auto;padding-bottom:32px;}
  .hero-inner{padding:56px 24px 24px;max-width:100%;}
  .hero-panel{position:relative;right:auto;bottom:auto;margin:0 24px 40px;min-width:0;width:calc(100% - 48px);max-width:520px;justify-content:space-between;}
  .stat-grid{grid-template-columns:repeat(2,1fr);gap:32px;}
  .steps{grid-template-columns:repeat(2,1fr);}
  .cta-section{flex-direction:column;align-items:flex-start;padding:40px 32px;}
  .cta-actions{width:100%;}
}
@media screen and (max-width:640px){
  .container{padding:0 18px;}
  .section{padding:48px 0;}
  h2,.section-title{font-size:24px;line-height:32px;}
  h3{font-size:19px;line-height:28px;}
  h1{font-size:30px;line-height:38px;}
  .hero h1{font-size:30px;line-height:40px;}
  .hero-sub{font-size:15px;line-height:27px;}
  .section-head{flex-direction:column;align-items:flex-start;gap:12px;}
  .section-desc{font-size:15px;line-height:27px;}
  .drawer{inset:60px 0 0 0;}
  .nav-inner{height:60px;}
  .catalog-pill{padding:12px 16px;width:100%;justify-content:flex-start;}
  .steps{grid-template-columns:1fr;gap:16px;}
  .feat-body{padding:18px;}
  .feat-mini .mini-img{width:84px;height:84px;}
  .post-item{flex-direction:column;padding:18px;}
  .post-thumb{width:100%;height:auto;aspect-ratio:16/9;}
  .stat-grid{gap:24px;}
  .stat-item .stat-num{font-size:28px;line-height:36px;}
  .cta-section{padding:32px 22px;}
  .hero-actions{width:100%;}
  .hero-actions .btn{flex:1;justify-content:center;}
  .footer-grid{grid-template-columns:1fr 1fr;gap:28px;}
  .footer-bottom{flex-direction:column;align-items:flex-start;}
  .faq-item summary{padding:18px 48px 18px 18px;font-size:16px;}
  .faq-answer{padding:0 48px 18px 18px;}
}

/* roulang page: article */
:root{
  --brand-600:#5B3DF5;
  --brand-500:#7A5CFF;
  --brand-400:#A78BFF;
  --accent-500:#FF6B4A;
  --accent-100:#FFE6DF;
  --ink-900:#14121F;
  --ink-600:#5C5870;
  --ink-400:#8B8798;
  --bg-050:#F7F5FF;
  --bg-100:#EFEBFF;
  --line:#E8E4F5;
  --white:#FFFFFF;
  --grad-brand:linear-gradient(135deg,#5B3DF5 0%,#8B4BFF 48%,#FF6B4A 100%);
  --grad-deep:linear-gradient(160deg,#14121F 0%,#2A2340 100%);
  --r-sm:10px;
  --r-md:16px;
  --r-lg:24px;
  --r-xl:32px;
  --r-pill:999px;
  --sh-1:0 1px 2px rgba(20,18,31,.04),0 8px 24px -12px rgba(91,61,245,.18);
  --sh-2:0 24px 60px -24px rgba(91,61,245,.35);
}
*,*::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","Source Han Sans SC",system-ui,sans-serif;
  font-size:16px;
  line-height:1.75;
  color:var(--ink-600);
  background:var(--bg-050);
  -webkit-font-smoothing:antialiased;
}
body.drawer-open{overflow:hidden;}
img{max-width:100%;height:auto;display:block;}
a{color:var(--brand-600);text-decoration:none;transition:color .18s ease,border-color .18s ease;}
a:hover{color:var(--brand-500);}
button,input{font-family:inherit;}
h1,h2,h3,h4{margin:0;color:var(--ink-900);font-weight:700;line-height:1.32;letter-spacing:0;}
p{margin:0 0 16px;}
p:last-child{margin-bottom:0;}
ul,ol{margin:0 0 16px;padding-left:22px;}
.container{width:100%;max-width:1200px;margin:0 auto;padding:0 24px;}

/* ============ 导航 ============ */
.site-header{
  position:sticky;top:0;z-index:100;
  background:rgba(255,255,255,.82);
  backdrop-filter:blur(12px);
  -webkit-backdrop-filter:blur(12px);
  border-bottom:1px solid transparent;
  transition:box-shadow .22s ease,border-color .22s ease;
}
.site-header.scrolled{border-bottom-color:var(--line);box-shadow:var(--sh-1);}
.header-inner{display:flex;align-items:center;gap:26px;height:68px;}
.brand{display:flex;align-items:center;gap:12px;flex:0 0 auto;color:var(--ink-900);}
.brand:hover{color:var(--ink-900);}
.logo-mark{
  position:relative;width:40px;height:40px;flex:0 0 40px;border-radius:12px;
  background:var(--grad-brand);
  box-shadow:0 8px 18px -8px rgba(91,61,245,.75);
  display:inline-block;
}
.lm-a{position:absolute;left:8px;top:10px;width:15px;height:10px;border:2px solid #fff;border-radius:4px;opacity:.95;}
.lm-b{position:absolute;left:16px;top:18px;width:15px;height:10px;border:2px solid #fff;border-radius:4px;opacity:.72;}
.lm-dot{position:absolute;left:9px;bottom:8px;width:5px;height:5px;border-radius:50%;background:#fff;}
.brand-text{font-weight:700;font-size:17px;white-space:nowrap;}
.nav-menu{display:flex;align-items:center;gap:26px;margin-left:6px;}
.nav-menu a{position:relative;font-size:15px;font-weight:600;color:var(--ink-600);padding:6px 0;}
.nav-menu a:hover{color:var(--brand-600);}
.nav-menu a.active{color:var(--ink-900);}
.nav-menu a.active::after{
  content:"";position:absolute;left:50%;transform:translateX(-50%);bottom:-6px;
  width:20px;height:2px;border-radius:2px;background:var(--grad-brand);
}
.nav-actions{margin-left:auto;display:flex;align-items:center;gap:12px;}
.cmd-search{position:relative;width:268px;}
.cmd-search input{
  width:100%;height:40px;border-radius:var(--r-sm);border:1px solid var(--line);
  background:#fff;padding:0 54px 0 38px;font-size:14px;color:var(--ink-900);
  transition:border-color .18s ease,box-shadow .18s ease;
}
.cmd-search input::placeholder{color:var(--ink-400);}
.cmd-search input:focus{outline:none;border-color:var(--brand-500);box-shadow:0 0 0 3px rgba(122,92,255,.18);}
.cmd-search .search-icon{position:absolute;left:14px;top:50%;transform:translateY(-50%);color:var(--ink-400);font-size:13px;}
.cmd-search kbd{
  position:absolute;right:9px;top:50%;transform:translateY(-50%);
  font-size:11px;font-weight:600;color:var(--ink-400);background:var(--bg-100);
  border-radius:6px;padding:3px 7px;font-family:inherit;
}
.icon-btn{
  width:40px;height:40px;border-radius:50%;border:1px solid var(--line);background:#fff;
  color:var(--ink-600);display:inline-flex;align-items:center;justify-content:center;
  cursor:pointer;font-size:15px;
  transition:background .18s ease,color .18s ease,border-color .18s ease,transform .18s ease;
}
.icon-btn:hover{background:var(--bg-100);color:var(--brand-600);border-color:var(--brand-400);}
.icon-btn:focus-visible{outline:2px solid var(--brand-400);outline-offset:2px;}
.nav-toggle{display:none;}

.btn{
  display:inline-flex;align-items:center;justify-content:center;gap:8px;
  border-radius:var(--r-pill);font-weight:600;font-size:15px;padding:13px 28px;
  border:1px solid transparent;cursor:pointer;white-space:nowrap;
  transition:transform .18s ease,box-shadow .18s ease,background .18s ease,color .18s ease,border-color .18s ease,filter .18s ease;
}
.btn-primary{background:var(--grad-brand);color:#fff;box-shadow:var(--sh-1);}
.btn-primary:hover{color:#fff;transform:translateY(-2px);box-shadow:var(--sh-2);filter:brightness(1.05);}
.btn-primary:active{transform:translateY(0);}
.btn-secondary{background:#fff;color:var(--brand-600);border-color:var(--line);}
.btn-secondary:hover{border-color:var(--brand-500);background:#F3EFFF;color:var(--brand-600);}
.btn:focus-visible{outline:2px solid var(--brand-400);outline-offset:2px;}
.btn:disabled{opacity:.5;cursor:not-allowed;}
.btn-sm{padding:10px 20px;font-size:14px;}

/* ============ 移动抽屉 ============ */
.mobile-drawer{
  position:fixed;inset:0;z-index:200;background:#fff;padding:18px 24px 40px;
  overflow-y:auto;transform:translateX(100%);opacity:0;visibility:hidden;
  transition:transform .28s ease,opacity .28s ease,visibility .28s ease;
}
.mobile-drawer.open{transform:translateX(0);opacity:1;visibility:visible;}
.drawer-head{display:flex;align-items:center;justify-content:space-between;margin-bottom:22px;}
.drawer-search{position:relative;margin-bottom:22px;}
.drawer-search input{
  width:100%;height:46px;border-radius:var(--r-sm);border:1px solid var(--line);
  background:var(--bg-050);padding:0 42px 0 40px;font-size:15px;color:var(--ink-900);
}
.drawer-search input:focus{outline:none;border-color:var(--brand-500);box-shadow:0 0 0 3px rgba(122,92,255,.18);}
.drawer-search .search-icon{position:absolute;left:15px;top:50%;transform:translateY(-50%);color:var(--ink-400);}
.drawer-nav{display:flex;flex-direction:column;}
.drawer-nav a{
  font-size:18px;font-weight:600;color:var(--ink-900);
  padding:16px 0;border-bottom:1px solid var(--line);display:flex;align-items:center;justify-content:space-between;
}
.drawer-nav a.active{color:var(--brand-600);}
.drawer-nav a i{font-size:13px;color:var(--ink-400);}
.drawer-cta{margin-top:26px;}
.drawer-cta .btn{width:100%;}

/* ============ 面包屑与栏目标题 ============ */
.breadcrumb{
  display:flex;align-items:center;gap:8px;flex-wrap:wrap;
  font-size:14px;color:var(--ink-400);padding:22px 0 0;
}
.breadcrumb a{color:var(--ink-400);}
.breadcrumb a:hover{color:var(--brand-600);}
.breadcrumb .sep{color:#C9C3DE;}
.breadcrumb .current{color:var(--brand-600);font-weight:600;}

.article-head{
  position:relative;overflow:hidden;margin-top:20px;
  border-radius:var(--r-xl);background:var(--grad-deep);
  padding:52px 48px 46px;color:#fff;
}
.article-head .bg-img{
  position:absolute;inset:0;opacity:.2;
  background:url('/assets/images/backpic/back-2.webp') center/cover no-repeat;
}
.article-head .mask{
  position:absolute;inset:0;
  background:linear-gradient(160deg,rgba(20,18,31,.55) 0%,rgba(42,35,64,.88) 100%);
}
.head-inner{position:relative;z-index:2;max-width:840px;}
.cat-pill{
  display:inline-flex;align-items:center;gap:6px;padding:6px 14px;border-radius:var(--r-pill);
  font-size:12px;font-weight:600;letter-spacing:.02em;
  background:rgba(255,255,255,.14);border:1px solid rgba(255,255,255,.26);color:#fff;
}
.article-head h1{
  color:#fff;font-size:38px;line-height:1.32;margin:18px 0 22px;letter-spacing:0;
  word-break:break-word;
}
.meta-row{display:flex;flex-wrap:wrap;gap:10px;}
.meta-badge{
  display:inline-flex;align-items:center;gap:6px;padding:6px 13px;border-radius:var(--r-pill);
  font-size:13px;color:rgba(255,255,255,.85);
  background:rgba(255,255,255,.12);border:1px solid rgba(255,255,255,.2);
}
.meta-badge i{font-size:12px;color:var(--brand-400);}

/* ============ 正文阅读区 ============ */
.article-main{padding:32px 0 0;}
.article-body{
  max-width:760px;margin:0 auto;background:#fff;border:1px solid var(--line);
  border-radius:var(--r-lg);padding:44px 46px;box-shadow:var(--sh-1);
  font-size:16px;line-height:1.9;color:var(--ink-600);
}
.article-body h2{
  font-size:26px;line-height:1.4;color:var(--ink-900);margin:40px 0 16px;padding-left:16px;position:relative;
}
.article-body h2::before{
  content:"";position:absolute;left:0;top:6px;bottom:6px;width:4px;border-radius:3px;background:var(--grad-brand);
}
.article-body h3{font-size:20px;color:var(--ink-900);margin:32px 0 12px;}
.article-body h4{font-size:17px;color:var(--ink-900);margin:24px 0 10px;}
.article-body p{margin:0 0 20px;}
.article-body ul,.article-body ol{margin:0 0 20px;padding-left:24px;}
.article-body li{margin-bottom:10px;}
.article-body a{color:var(--brand-600);border-bottom:1px solid rgba(91,61,245,.3);}
.article-body a:hover{color:var(--brand-500);border-bottom-color:var(--brand-500);}
.article-body strong{color:var(--ink-900);font-weight:600;}
.article-body blockquote{
  position:relative;margin:0 0 22px;padding:18px 22px 18px 26px;
  background:var(--bg-050);border-radius:0 var(--r-md) var(--r-md) 0;color:var(--ink-600);
}
.article-body blockquote::before{
  content:"";position:absolute;left:0;top:0;bottom:0;width:3px;border-radius:3px;background:var(--grad-brand);
}
.article-body blockquote p:last-child{margin-bottom:0;}
.article-body img{border-radius:16px;margin:8px 0 10px;width:100%;}
.article-body figure{margin:0 0 22px;}
.article-body figcaption{font-size:13px;color:var(--ink-400);text-align:center;margin-top:10px;}
.article-body pre{
  background:var(--ink-900);color:#EDEAF7;border-radius:var(--r-md);
  padding:18px 20px;overflow-x:auto;font-size:14px;line-height:1.7;margin:0 0 22px;
}
.article-body code{font-family:ui-monospace,SFMono-Regular,Menlo,Consolas,monospace;font-size:14px;}
.article-body :not(pre) > code{
  background:var(--bg-100);color:var(--brand-600);padding:2px 7px;border-radius:6px;
}
.article-body table{width:100%;border-collapse:collapse;margin:0 0 22px;font-size:15px;display:block;overflow-x:auto;}
.article-body th,.article-body td{border:1px solid var(--line);padding:10px 14px;text-align:left;}
.article-body th{background:var(--bg-050);color:var(--ink-900);font-weight:600;}
.article-body hr{border:none;border-top:1px solid var(--line);margin:32px 0;}

.empty-state{
  border:1px dashed #D6CFF0;border-radius:var(--r-md);
  padding:56px 24px;text-align:center;background:var(--bg-050);
}
.empty-state i{font-size:28px;color:var(--brand-400);margin-bottom:14px;display:block;}
.empty-state h3{font-size:19px;margin-bottom:8px;}
.empty-state p{font-size:14px;color:var(--ink-400);margin-bottom:20px;}

/* ============ 收藏与分享 ============ */
.cta-wrap{padding:48px 0 0;}
.cta-band{
  position:relative;overflow:hidden;border-radius:var(--r-xl);
  background:var(--grad-deep);padding:52px 56px;
  display:flex;align-items:center;justify-content:space-between;gap:40px;flex-wrap:wrap;
}
.cta-band .glow{
  position:absolute;right:-80px;top:-120px;width:340px;height:340px;border-radius:50%;
  background:radial-gradient(circle,rgba(255,107,74,.4) 0%,rgba(255,107,74,0) 68%);
}
.cta-copy{position:relative;z-index:2;max-width:620px;}
.cta-copy h2{color:#fff;font-size:28px;line-height:1.4;margin-bottom:12px;}
.cta-copy p{color:rgba(255,255,255,.76);font-size:15px;line-height:1.85;margin:0;}
.cta-links{position:relative;z-index:2;margin-top:16px;font-size:13px;color:rgba(255,255,255,.55);}
.cta-links a{color:var(--brand-400);}
.cta-links a:hover{color:var(--accent-500);}
.cta-actions{position:relative;z-index:2;display:flex;align-items:center;gap:14px;flex-wrap:wrap;}
.icon-btn.light{
  width:52px;height:52px;background:rgba(255,255,255,.12);border-color:rgba(255,255,255,.28);color:#fff;
}
.icon-btn.light:hover{background:rgba(255,255,255,.22);color:#fff;border-color:rgba(255,255,255,.5);}

/* ============ 相关推荐 ============ */
.related-section{padding:72px 0 0;}
.section-head{display:flex;align-items:flex-end;justify-content:space-between;gap:20px;margin-bottom:28px;flex-wrap:wrap;}
.section-head h2{font-size:30px;}
.section-head .sub{font-size:14px;color:var(--ink-400);margin-top:8px;}
.section-link{font-size:14px;font-weight:600;color:var(--brand-600);display:inline-flex;align-items:center;gap:6px;}
.section-link:hover{gap:10px;}
.related-card{
  display:block;height:100%;background:#fff;border:1px solid var(--line);
  border-radius:var(--r-lg);overflow:hidden;box-shadow:var(--sh-1);
  transition:transform .2s ease,box-shadow .2s ease,border-color .2s ease;
}
.related-card:hover{transform:translateY(-4px);box-shadow:var(--sh-2);border-color:#DCD5F7;}
.related-card .thumb{width:100%;aspect-ratio:16/9;object-fit:cover;}
.rc-body{padding:20px 22px 24px;}
.cat-badge{
  display:inline-flex;align-items:center;gap:6px;padding:4px 12px;border-radius:var(--r-pill);
  background:var(--bg-100);color:var(--brand-600);font-size:12px;font-weight:600;letter-spacing:.02em;
}
.related-card h3{font-size:17px;line-height:1.55;margin:14px 0 10px;color:var(--ink-900);transition:color .18s ease;}
.related-card:hover h3{color:var(--brand-600);}
.rc-desc{
  font-size:14px;line-height:1.72;color:var(--ink-600);
  display:-webkit-box;-webkit-line-clamp:2;-webkit-box-orient:vertical;overflow:hidden;
}
.rc-meta{margin-top:16px;padding-top:14px;border-top:1px solid var(--line);font-size:13px;color:var(--ink-400);display:flex;align-items:center;gap:8px;}
.rc-meta i{color:var(--brand-400);}

/* ============ 返回入口 ============ */
.back-row{max-width:760px;margin:36px auto 0;padding-bottom:8px;}
.back-link{display:inline-flex;align-items:center;gap:8px;font-size:15px;font-weight:600;color:var(--ink-600);transition:gap .18s ease,color .18s ease;}
.back-link:hover{color:var(--brand-600);gap:14px;}

/* ============ 页脚 ============ */
.site-footer{background:var(--ink-900);color:#B9B4CC;margin-top:96px;padding:64px 0 0;}
.footer-top{padding-bottom:44px;}
.footer-grid{display:grid;grid-template-columns:1.6fr 1fr 1fr 1fr;gap:40px;}
.footer-brand{display:flex;align-items:center;gap:12px;margin-bottom:18px;}
.footer-logo-text{color:#fff;font-weight:700;font-size:17px;}
.footer-desc{font-size:14px;line-height:1.85;color:#9C97B3;margin:0 0 10px;max-width:360px;}
.footer-desc.muted{color:#7F7A96;}
.footer-col h4{color:#fff;font-size:15px;font-weight:600;margin:0 0 18px;}
.footer-links{display:flex;flex-direction:column;gap:12px;}
.footer-links a{color:#A78BFF;font-size:14px;}
.footer-links a:hover{color:var(--accent-500);}
.footer-bottom{
  display:flex;justify-content:space-between;gap:16px;flex-wrap:wrap;
  border-top:1px solid rgba(255,255,255,.08);padding:22px 0 28px;font-size:13px;color:#7F7A96;
}
.footer-bottom a{color:#A78BFF;}
.footer-bottom a:hover{color:var(--accent-500);}

/* ============ 提示气泡 ============ */
.toast{
  position:fixed;left:50%;bottom:36px;transform:translate(-50%,16px);
  background:var(--ink-900);color:#fff;font-size:14px;padding:12px 22px;border-radius:var(--r-pill);
  box-shadow:var(--sh-2);opacity:0;pointer-events:none;z-index:300;
  transition:opacity .22s ease,transform .22s ease;
}
.toast.show{opacity:1;transform:translate(-50%,0);}

/* ============ 响应式 ============ */
@media screen and (max-width:1200px){
  .container{padding:0 24px;}
  .cmd-search{width:200px;}
  .nav-menu{gap:20px;}
  .header-inner{gap:18px;}
}
@media screen and (max-width:900px){
  .nav-menu,.cmd-search,.nav-actions .icon-btn:not(.nav-toggle),.nav-actions .btn-sm{display:none;}
  .nav-toggle{display:inline-flex;}
  .header-inner{height:60px;}
  .article-head{padding:38px 28px 34px;border-radius:var(--r-lg);}
  .article-head h1{font-size:30px;margin:16px 0 18px;}
  .article-body{padding:30px 24px;border-radius:var(--r-md);}
  .article-body h2{font-size:22px;}
  .article-body h3{font-size:19px;}
  .cta-band{padding:36px 28px;border-radius:var(--r-lg);}
  .cta-copy h2{font-size:23px;}
  .related-section{padding:56px 0 0;}
  .section-head h2{font-size:24px;}
  .footer-grid{grid-template-columns:1fr 1fr;gap:32px;}
  .site-footer{margin-top:72px;padding-top:48px;}
}
@media screen and (max-width:640px){
  .container{padding:0 16px;}
  body{font-size:15px;line-height:1.75;}
  .brand-text{font-size:15px;}
  .breadcrumb{padding-top:16px;font-size:13px;}
  .article-head{padding:30px 20px 28px;margin-top:14px;}
  .article-head h1{font-size:24px;}
  .article-body{padding:24px 18px;}
  .article-body h2{font-size:20px;margin-top:32px;}
  .article-body h3{font-size:18px;}
  .cta-band{padding:30px 20px;flex-direction:column;align-items:flex-start;gap:24px;}
  .cta-actions{width:100%;}
  .cta-actions .btn{flex:1;}
  .related-section{padding:44px 0 0;}
  .back-row{margin-top:26px;}
  .footer-grid{grid-template-columns:1fr;gap:28px;}
  .footer-bottom{flex-direction:column;gap:8px;}
}

/* roulang page: category2 */
:root{
  --brand-600:#5B3DF5;
  --brand-500:#7A5CFF;
  --brand-400:#A78BFF;
  --accent-500:#FF6B4A;
  --accent-100:#FFE6DF;
  --ink-900:#14121F;
  --ink-600:#5C5870;
  --ink-400:#8B8798;
  --bg-050:#F7F5FF;
  --bg-100:#EFEBFF;
  --line:#E8E4F5;
  --white:#FFFFFF;
  --grad-brand:linear-gradient(135deg,#5B3DF5 0%,#8B4BFF 48%,#FF6B4A 100%);
  --grad-deep:linear-gradient(160deg,#14121F 0%,#2A2340 100%);
  --r-sm:10px;
  --r-md:16px;
  --r-lg:24px;
  --r-xl:32px;
  --r-pill:999px;
  --sh-1:0 1px 2px rgba(20,18,31,.04), 0 8px 24px -12px rgba(91,61,245,.18);
  --sh-2:0 24px 60px -24px rgba(91,61,245,.35);
}
*,*::before,*::after{box-sizing:border-box;}
html{-webkit-text-size-adjust:100%;}
body{
  margin:0;
  font-family:"PingFang SC","HarmonyOS Sans SC","Microsoft YaHei","Source Han Sans SC",system-ui,-apple-system,sans-serif;
  font-size:16px;
  line-height:1.75;
  color:var(--ink-600);
  background:var(--bg-050);
  -webkit-font-smoothing:antialiased;
}
img{max-width:100%;display:block;border:0;}
a{color:var(--brand-600);text-decoration:none;transition:color .18s ease;}
a:hover{color:var(--brand-500);}
h1,h2,h3,h4,h5,h6{
  font-family:inherit;
  color:var(--ink-900);
  margin:0 0 16px;
  font-weight:700;
  line-height:1.25;
  letter-spacing:0;
}
h1{font-size:44px;line-height:52px;}
h2{font-size:30px;line-height:40px;}
h3{font-size:22px;line-height:32px;font-weight:600;}
h4{font-size:18px;line-height:28px;font-weight:600;}
p{margin:0 0 16px;font-size:16px;line-height:28px;}
ul,ol{margin:0 0 16px;padding-left:20px;}
li{font-size:16px;line-height:28px;}
button{font-family:inherit;cursor:pointer;}
input{font-family:inherit;}
::selection{background:var(--brand-400);color:#fff;}

.container{max-width:1200px;margin:0 auto;padding:0 24px;width:100%;}
.section{padding:96px 0;}
.section-tight{padding:64px 0;}
.bg-white{background:var(--white);}
.bg-soft{background:var(--bg-100);}

/* ---------- 导航 ---------- */
.site-header{
  position:sticky;
  top:0;
  z-index:80;
  background:rgba(255,255,255,.82);
  -webkit-backdrop-filter:blur(12px);
  backdrop-filter:blur(12px);
  border-bottom:1px solid transparent;
  transition:border-color .2s ease, box-shadow .2s ease;
}
.site-header.scrolled{
  border-bottom-color:var(--line);
  box-shadow:var(--sh-1);
}
.nav-inner{
  display:flex;
  align-items:center;
  gap:24px;
  height:68px;
}
.brand{
  display:flex;
  align-items:center;
  gap:10px;
  flex-shrink:0;
  color:var(--ink-900);
}
.brand:hover{color:var(--ink-900);}
.logo-mark{
  position:relative;
  width:40px;
  height:40px;
  border-radius:12px;
  background:var(--grad-brand);
  display:inline-flex;
  align-items:center;
  justify-content:center;
  flex-shrink:0;
  box-shadow:0 8px 18px -10px rgba(91,61,245,.7);
}
.logo-mark .lm-a,
.logo-mark .lm-b{
  position:absolute;
  width:17px;
  height:11px;
  border:2px solid rgba(255,255,255,.92);
  border-radius:4px;
}
.logo-mark .lm-a{top:10px;left:9px;}
.logo-mark .lm-b{top:17px;left:14px;border-color:rgba(255,255,255,.6);}
.logo-mark .lm-dot{
  position:absolute;
  width:4px;
  height:4px;
  border-radius:50%;
  background:#fff;
  right:9px;
  bottom:9px;
}
.brand-text{
  font-size:17px;
  font-weight:700;
  letter-spacing:0;
  white-space:nowrap;
}
.nav-menu{
  display:flex;
  align-items:center;
  gap:28px;
  margin-left:8px;
}
.nav-menu a{
  position:relative;
  font-size:15px;
  font-weight:600;
  color:var(--ink-600);
  padding:6px 0;
  white-space:nowrap;
}
.nav-menu a:hover{color:var(--brand-600);}
.nav-menu a.active{color:var(--brand-600);}
.nav-menu a.active::after{
  content:"";
  position:absolute;
  left:0;
  bottom:-14px;
  width:20px;
  height:2px;
  border-radius:2px;
  background:var(--grad-brand);
}
.nav-actions{
  display:flex;
  align-items:center;
  gap:12px;
  margin-left:auto;
}
.command-search{
  position:relative;
  width:270px;
}
.command-search input{
  width:100%;
  height:40px;
  padding:0 52px 0 38px;
  border-radius:var(--r-sm);
  border:1px solid var(--line);
  background:var(--white);
  font-size:14px;
  color:var(--ink-900);
  outline:none;
  transition:border-color .18s ease, box-shadow .18s ease;
}
.command-search input::placeholder{color:var(--ink-400);}
.command-search input:focus{
  border-color:var(--brand-600);
  box-shadow:0 0 0 3px rgba(167,139,255,.35);
}
.command-search .cs-icon{
  position:absolute;
  left:12px;
  top:50%;
  transform:translateY(-50%);
  width:16px;
  height:16px;
  border:2px solid var(--ink-400);
  border-radius:50%;
  pointer-events:none;
}
.command-search .cs-icon::after{
  content:"";
  position:absolute;
  width:2px;
  height:7px;
  background:var(--ink-400);
  border-radius:2px;
  right:-3px;
  bottom:-4px;
  transform:rotate(-45deg);
}
.command-search kbd{
  position:absolute;
  right:8px;
  top:50%;
  transform:translateY(-50%);
  font-family:inherit;
  font-size:12px;
  font-weight:600;
  color:var(--ink-400);
  background:var(--bg-050);
  border:1px solid var(--line);
  border-radius:6px;
  padding:2px 7px;
  line-height:16px;
}
.icon-btn{
  width:40px;
  height:40px;
  border-radius:50%;
  border:1px solid var(--line);
  background:var(--white);
  display:inline-flex;
  align-items:center;
  justify-content:center;
  color:var(--ink-600);
  transition:background .18s ease,color .18s ease,border-color .18s ease;
}
.icon-btn:hover{background:var(--bg-100);color:var(--brand-600);border-color:var(--brand-400);}
.icon-btn svg{width:18px;height:18px;}
.nav-toggle{
  display:none;
  width:42px;
  height:42px;
  border-radius:var(--r-sm);
  border:1px solid var(--line);
  background:var(--white);
  padding:0;
  align-items:center;
  justify-content:center;
  flex-direction:column;
  gap:4px;
}
.nav-toggle span{
  display:block;
  width:18px;
  height:2px;
  border-radius:2px;
  background:var(--ink-900);
}

/* 按钮 */
.btn{
  display:inline-flex;
  align-items:center;
  justify-content:center;
  gap:8px;
  padding:14px 28px;
  border-radius:var(--r-pill);
  font-size:15px;
  font-weight:600;
  border:1px solid transparent;
  transition:transform .18s ease, box-shadow .18s ease, background .18s ease, color .18s ease, border-color .18s ease, filter .18s ease;
  text-align:center;
}
.btn:focus-visible{outline:2px solid var(--brand-400);outline-offset:2px;}
.btn-primary{
  background:var(--grad-brand);
  color:#fff;
  box-shadow:var(--sh-1);
}
.btn-primary:hover{
  color:#fff;
  transform:translateY(-2px);
  box-shadow:var(--sh-2);
  filter:brightness(1.05);
}
.btn-primary:active{transform:translateY(0);}
.btn-secondary{
  background:var(--white);
  color:var(--brand-600);
  border-color:var(--line);
}
.btn-secondary:hover{
  background:#F3EFFF;
  border-color:var(--brand-600);
  color:var(--brand-600);
  transform:translateY(-2px);
}
.btn-secondary:active{transform:translateY(0);}
.btn-ghost-light{
  background:transparent;
  color:#fff;
  border-color:rgba(255,255,255,.5);
}
.btn-ghost-light:hover{
  background:rgba(255,255,255,.14);
  color:#fff;
  border-color:#fff;
  transform:translateY(-2px);
}
.btn-sm{padding:10px 20px;font-size:14px;}
.btn[disabled],.btn.is-disabled{opacity:.5;cursor:not-allowed;transform:none;}

/* 徽章 */
.badge-cat{
  display:inline-flex;
  align-items:center;
  padding:4px 12px;
  border-radius:var(--r-pill);
  background:var(--bg-100);
  color:var(--brand-600);
  font-size:12px;
  font-weight:600;
  letter-spacing:.02em;
  line-height:18px;
}
.badge-data{
  position:relative;
  display:inline-flex;
  align-items:center;
  gap:6px;
  padding:5px 14px;
  border-radius:var(--r-pill);
  font-size:12px;
  font-weight:600;
  letter-spacing:.02em;
  line-height:18px;
  color:var(--ink-600);
  background:#fff;
  border:1px solid transparent;
  background-image:linear-gradient(#fff,#fff),var(--grad-brand);
  background-origin:border-box;
  background-clip:padding-box,border-box;
}
.badge-data b{
  color:var(--accent-500);
  font-weight:700;
  font-size:14px;
}
.badge-row{
  display:flex;
  flex-wrap:wrap;
  gap:10px;
  margin-bottom:22px;
}

/* Hero */
.hero{
  position:relative;
  overflow:hidden;
  border-radius:0 0 var(--r-xl) var(--r-xl);
  background-image:linear-gradient(150deg,rgba(20,18,31,.94) 0%,rgba(42,35,64,.9) 55%,rgba(91,61,245,.72) 100%),url('/assets/images/backpic/back-2.webp');
  background-size:cover;
  background-position:center;
  color:#fff;
  padding:80px 0 72px;
}
.hero::before{
  content:"";
  position:absolute;
  inset:0;
  background-image:radial-gradient(rgba(255,255,255,.16) 1px,transparent 1px);
  background-size:22px 22px;
  opacity:.32;
  pointer-events:none;
}
.hero .container{position:relative;z-index:2;}
.hero h1{
  color:#fff;
  font-size:44px;
  line-height:52px;
  margin-bottom:18px;
  max-width:14em;
}
.hero .hero-sub{
  color:rgba(255,255,255,.82);
  font-size:17px;
  line-height:30px;
  max-width:34em;
  margin-bottom:30px;
}
.hero .badge-data{
  background-image:linear-gradient(rgba(255,255,255,.12),rgba(255,255,255,.12)),var(--grad-brand);
  background-origin:border-box;
  background-clip:padding-box,border-box;
  color:rgba(255,255,255,.9);
}
.hero .badge-data b{color:#FFB39F;}
.hero-actions{display:flex;flex-wrap:wrap;gap:14px;}

.hero-panel{
  border-radius:20px;
  padding:26px;
  background:rgba(255,255,255,.14);
  -webkit-backdrop-filter:blur(16px);
  backdrop-filter:blur(16px);
  border:1px solid rgba(255,255,255,.24);
}
.hero-panel h3{
  color:#fff;
  font-size:16px;
  line-height:24px;
  margin-bottom:18px;
  font-weight:600;
}
.panel-metric{
  display:flex;
  align-items:baseline;
  justify-content:space-between;
  gap:12px;
  padding:14px 0;
  border-bottom:1px solid rgba(255,255,255,.18);
}
.panel-metric:last-child{border-bottom:0;padding-bottom:0;}
.panel-metric .pm-label{
  font-size:14px;
  line-height:22px;
  color:rgba(255,255,255,.75);
}
.panel-metric .pm-value{
  font-size:22px;
  line-height:30px;
  font-weight:700;
  color:#fff;
  font-variant-numeric:tabular-nums;
}
.panel-metric .pm-value small{
  font-size:13px;
  font-weight:600;
  color:rgba(255,255,255,.72);
  margin-left:2px;
}
.panel-note{
  margin-top:16px;
  font-size:13px;
  line-height:22px;
  color:rgba(255,255,255,.7);
}

/* 段落标题 */
.section-head{
  display:flex;
  align-items:flex-end;
  justify-content:space-between;
  gap:24px;
  margin-bottom:32px;
}
.section-head .sh-text{max-width:640px;}
.section-head h2{margin-bottom:10px;}
.section-head p{margin:0;font-size:16px;line-height:28px;color:var(--ink-600);}
.text-link{
  font-size:15px;
  font-weight:600;
  color:var(--brand-600);
  white-space:nowrap;
}
.text-link::after{content:" →";}
.text-link:hover{color:var(--accent-500);}

/* 数据带 */
.metric-card{
  background:var(--white);
  border:1px solid var(--line);
  border-radius:var(--r-lg);
  padding:24px;
  height:100%;
  box-shadow:var(--sh-1);
  transition:transform .18s ease, box-shadow .18s ease;
}
.metric-card:hover{transform:translateY(-3px);box-shadow:var(--sh-2);}
.metric-card .mc-num{
  font-size:32px;
  line-height:40px;
  font-weight:700;
  color:var(--accent-500);
  font-variant-numeric:tabular-nums;
}
.metric-card .mc-num small{font-size:15px;font-weight:600;color:var(--ink-600);margin-left:4px;}
.metric-card h4{margin:8px 0 6px;font-size:17px;}
.metric-card p{margin:0;font-size:14px;line-height:24px;color:var(--ink-400);}

/* 目录 + 列表 */
.catalog-card{
  background:var(--white);
  border:1px solid var(--line);
  border-radius:var(--r-lg);
  padding:22px;
  box-shadow:var(--sh-1);
}
.catalog-card h3{font-size:18px;margin-bottom:14px;}
.catalog-list{list-style:none;margin:0;padding:0;}
.catalog-list li{margin-bottom:8px;}
.catalog-list a{
  display:flex;
  align-items:center;
  justify-content:space-between;
  gap:10px;
  padding:10px 14px;
  border-radius:var(--r-sm);
  background:var(--bg-050);
  color:var(--ink-900);
  font-size:15px;
  font-weight:600;
  transition:background .18s ease,color .18s ease,transform .18s ease;
}
.catalog-list a span.count{
  font-size:12px;
  font-weight:600;
  color:var(--brand-600);
  background:var(--bg-100);
  border-radius:var(--r-pill);
  padding:2px 9px;
}
.catalog-list a:hover{background:var(--bg-100);color:var(--brand-600);transform:translateX(2px);}
.catalog-side-note{
  margin-top:16px;
  padding-top:16px;
  border-top:1px solid var(--line);
  font-size:13px;
  line-height:22px;
  color:var(--ink-400);
}
.sticky-side{position:sticky;top:96px;}

.entry-list{
  background:var(--white);
  border:1px solid var(--line);
  border-radius:var(--r-lg);
  overflow:hidden;
  box-shadow:var(--sh-1);
}
.entry{
  display:flex;
  gap:18px;
  padding:22px 24px;
  border-bottom:1px solid var(--line);
  transition:background .18s ease;
}
.entry:last-child{border-bottom:0;}
.entry:hover{background:var(--bg-050);}
.entry:hover .entry-title{color:var(--brand-600);}
.entry-thumb{
  width:120px;
  height:80px;
  border-radius:12px;
  object-fit:cover;
  flex-shrink:0;
  background:var(--bg-100);
}
.entry-body{min-width:0;flex:1;}
.entry-meta{
  display:flex;
  flex-wrap:wrap;
  align-items:center;
  gap:10px;
  margin-bottom:8px;
  font-size:13px;
  color:var(--ink-400);
}
.entry-title{
  font-size:17px;
  font-weight:600;
  color:var(--ink-900);
  line-height:26px;
  margin-bottom:6px;
  transition:color .18s ease;
}
.entry-desc{
  margin:0 0 10px;
  font-size:15px;
  line-height:26px;
  color:var(--ink-600);
  display:-webkit-box;
  -webkit-line-clamp:2;
  -webkit-box-orient:vertical;
  overflow:hidden;
}
.entry-foot{
  display:flex;
  flex-wrap:wrap;
  align-items:center;
  gap:12px;
  font-size:13px;
  color:var(--ink-400);
}
.entry-foot .entry-link{font-size:14px;font-weight:600;color:var(--brand-600);}
.entry-foot .entry-link:hover{color:var(--accent-500);}

/* 步骤 */
.step-card{
  background:var(--white);
  border:1px solid var(--line);
  border-radius:var(--r-lg);
  padding:26px 24px;
  height:100%;
  position:relative;
  transition:transform .18s ease, box-shadow .18s ease;
}
.step-card:hover{transform:translateY(-3px);box-shadow:var(--sh-2);}
.step-card .step-no{
  display:inline-flex;
  align-items:center;
  justify-content:center;
  width:34px;
  height:34px;
  border-radius:11px;
  background:var(--grad-brand);
  color:#fff;
  font-size:15px;
  font-weight:700;
  margin-bottom:14px;
}
.step-card h3{font-size:18px;margin-bottom:8px;}
.step-card p{margin:0;font-size:15px;line-height:26px;color:var(--ink-600);}

/* 交叉推荐卡 */
.reco-card{
  display:block;
  background:var(--white);
  border:1px solid var(--line);
  border-radius:var(--r-lg);
  overflow:hidden;
  height:100%;
  box-shadow:var(--sh-1);
  transition:transform .18s ease, box-shadow .18s ease, border-color .18s ease;
  color:inherit;
}
.reco-card:hover{transform:translateY(-4px);box-shadow:var(--sh-2);border-color:var(--brand-400);color:inherit;}
.reco-cover{
  width:100%;
  aspect-ratio:16/10;
  object-fit:cover;
  background:var(--bg-100);
}
.reco-body{padding:22px;}
.reco-body h3{font-size:18px;margin:10px 0 8px;}
.reco-body p{margin:0 0 14px;font-size:15px;line-height:26px;color:var(--ink-600);}
.reco-body .reco-link{font-size:14px;font-weight:600;color:var(--brand-600);}
.reco-card:hover .reco-link{color:var(--accent-500);}

/* FAQ */
.faq-wrap{
  background:var(--white);
  border:1px solid var(--line);
  border-radius:var(--r-lg);
  box-shadow:var(--sh-1);
  overflow:hidden;
}
.faq-item{border-bottom:1px solid var(--line);position:relative;}
.faq-item:last-child{border-bottom:0;}
.faq-item::before{
  content:"";
  position:absolute;
  left:0;
  top:0;
  bottom:0;
  width:3px;
  background:var(--grad-brand);
  opacity:0;
  transition:opacity .2s ease;
}
.faq-item.open::before{opacity:1;}
.faq-q{
  width:100%;
  display:flex;
  align-items:center;
  justify-content:space-between;
  gap:16px;
  padding:22px 26px;
  background:transparent;
  border:0;
  text-align:left;
  font-size:17px;
  font-weight:600;
  color:var(--ink-900);
  line-height:26px;
  transition:color .18s ease;
}
.faq-q:hover{color:var(--brand-600);}
.faq-q:focus-visible{outline:2px solid var(--brand-400);outline-offset:-2px;}
.faq-icon{
  position:relative;
  width:16px;
  height:16px;
  flex-shrink:0;
  transition:transform .2s ease;
}
.faq-icon::before,
.faq-icon::after{
  content:"";
  position:absolute;
  background:var(--brand-600);
  border-radius:2px;
}
.faq-icon::before{width:16px;height:2px;top:7px;left:0;}
.faq-icon::after{width:2px;height:16px;top:0;left:7px;transition:opacity .2s ease;}
.faq-item.open .faq-icon{transform:rotate(135deg);}
.faq-a{
  display:none;
  padding:0 26px 24px;
  font-size:15px;
  line-height:26px;
  color:var(--ink-600);
  max-width:62em;
}
.faq-item.open .faq-a{display:block;}

/* CTA */
.cta-block{
  position:relative;
  overflow:hidden;
  border-radius:var(--r-xl);
  background:var(--grad-deep);
  padding:56px;
  color:#fff;
}
.cta-block::before{
  content:"";
  position:absolute;
  inset:0;
  background-image:radial-gradient(rgba(255,255,255,.14) 1px,transparent 1px);
  background-size:24px 24px;
  opacity:.3;
  pointer-events:none;
}
.cta-block .cta-inner{position:relative;z-index:2;}
.cta-block h2{color:#fff;font-size:30px;line-height:40px;margin-bottom:12px;}
.cta-block p{color:rgba(255,255,255,.78);font-size:16px;line-height:28px;margin:0;max-width:36em;}
.cta-actions{display:flex;flex-wrap:wrap;gap:12px;align-items:center;justify-content:flex-end;}
.cta-round{
  width:52px;
  height:52px;
  border-radius:50%;
  border:1px solid rgba(255,255,255,.4);
  background:rgba(255,255,255,.1);
  color:#fff;
  display:inline-flex;
  align-items:center;
  justify-content:center;
  transition:background .18s ease,color .18s ease,border-color .18s ease,transform .18s ease;
}
.cta-round:hover{background:var(--accent-500);border-color:var(--accent-500);color:#fff;transform:translateY(-2px);}
.cta-round svg{width:20px;height:20px;}
.cta-links{
  margin-top:26px;
  padding-top:22px;
  border-top:1px solid rgba(255,255,255,.18);
  font-size:14px;
  color:rgba(255,255,255,.7);
}
.cta-links a{color:var(--brand-400);}
.cta-links a:hover{color:var(--accent-500);}

/* 页脚 */
.site-footer{
  background:#14121F;
  color:rgba(255,255,255,.68);
  margin-top:96px;
  padding-top:72px;
}
.footer-grid{
  display:grid;
  grid-template-columns:2fr 1fr 1fr 1fr;
  gap:40px;
}
.footer-brand{
  display:flex;
  align-items:center;
  gap:10px;
  margin-bottom:18px;
}
.footer-logo-text{
  font-size:17px;
  font-weight:700;
  color:#fff;
}
.footer-desc{
  font-size:14px;
  line-height:24px;
  color:rgba(255,255,255,.62);
  margin:0 0 10px;
  max-width:34em;
}
.footer-desc.muted{color:rgba(255,255,255,.42);}
.site-footer h4{
  color:#fff;
  font-size:15px;
  font-weight:600;
  margin:0 0 18px;
}
.footer-links{display:flex;flex-direction:column;gap:12px;}
.footer-links a{
  color:var(--brand-400);
  font-size:14px;
  line-height:22px;
}
.footer-links a:hover{color:var(--accent-500);}
.footer-bottom{
  margin-top:56px;
  padding:22px 0 28px;
  border-top:1px solid rgba(255,255,255,.12);
  display:flex;
  flex-wrap:wrap;
  gap:12px;
  justify-content:space-between;
  font-size:13px;
  color:rgba(255,255,255,.48);
}
.footer-bottom a{color:rgba(255,255,255,.68);}
.footer-bottom a:hover{color:var(--accent-500);}

/* 移动端抽屉 */
.mobile-drawer{
  position:fixed;
  inset:0;
  z-index:120;
  background:#fff;
  padding:20px 24px 40px;
  display:none;
  flex-direction:column;
  overflow-y:auto;
}
.mobile-drawer.open{display:flex;}
.drawer-top{
  display:flex;
  align-items:center;
  justify-content:space-between;
  margin-bottom:24px;
}
.drawer-close{
  width:40px;
  height:40px;
  border-radius:50%;
  border:1px solid var(--line);
  background:var(--white);
  color:var(--ink-900);
  font-size:20px;
  line-height:1;
}
.drawer-nav{display:flex;flex-direction:column;margin-bottom:24px;}
.drawer-nav a{
  font-size:18px;
  font-weight:600;
  color:var(--ink-900);
  line-height:56px;
  border-bottom:1px solid var(--line);
}
.drawer-nav a.active{color:var(--brand-600);}
.drawer-search{margin-bottom:22px;}
.drawer-search input{
  width:100%;
  height:46px;
  border-radius:var(--r-sm);
  border:1px solid var(--line);
  padding:0 16px;
  font-size:15px;
  outline:none;
}
.drawer-search input:focus{border-color:var(--brand-600);box-shadow:0 0 0 3px rgba(167,139,255,.35);}
.drawer-cta .btn{width:100%;}

/* 响应式 */
@media screen and (max-width:1199px){
  h1{font-size:38px;line-height:46px;}
  .hero h1{font-size:38px;line-height:46px;}
  .command-search{width:220px;}
  .nav-menu{gap:20px;}
  .footer-grid{grid-template-columns:1fr 1fr;gap:32px;}
}
@media screen and (max-width:1023px){
  .section{padding:72px 0;}
  .hero{padding:64px 0 56px;}
  .nav-menu{display:none;}
  .nav-toggle{display:inline-flex;}
  .command-search{display:none;}
  .icon-btn{display:none;}
  .nav-inner{height:60px;}
  .cta-block{padding:44px 32px;}
  .cta-actions{justify-content:flex-start;margin-top:24px;}
  .sticky-side{position:static;}
}
@media screen and (max-width:767px){
  .section{padding:48px 0;}
  .container{padding:0 20px;}
  h1{font-size:30px;line-height:38px;}
  h2{font-size:24px;line-height:32px;}
  h3{font-size:19px;line-height:28px;}
  .hero h1{font-size:30px;line-height:38px;}
  .hero .hero-sub{font-size:15px;line-height:27px;}
  .hero{padding:48px 0 44px;border-radius:0 0 var(--r-lg) var(--r-lg);}
  .section-head{flex-direction:column;align-items:flex-start;gap:12px;}
  .entry{flex-direction:column;padding:20px;}
  .entry-thumb{width:100%;height:auto;aspect-ratio:16/9;}
  .cta-block{padding:36px 24px;border-radius:var(--r-lg);}
  .cta-block h2{font-size:24px;line-height:32px;}
  .footer-grid{grid-template-columns:1fr;gap:28px;}
  .site-footer{padding-top:48px;margin-top:64px;}
  .footer-bottom{flex-direction:column;gap:8px;}
  .hero-panel{padding:20px;margin-top:28px;}
  .panel-metric .pm-value{font-size:19px;}
  .faq-q{padding:18px 20px;font-size:16px;}
  .faq-a{padding:0 20px 20px;}
}
@media screen and (max-width:519px){
  .brand-text{font-size:15px;}
  .entry-title{font-size:16px;}
  .metric-card{padding:20px;}
  .cta-actions .btn{width:100%;}
}

/* roulang page: category1 */
:root{
  --brand-600:#5B3DF5;
  --brand-500:#7A5CFF;
  --brand-400:#A78BFF;
  --accent-500:#FF6B4A;
  --accent-100:#FFE6DF;
  --ink-900:#14121F;
  --ink-600:#5C5870;
  --ink-400:#8B8798;
  --bg-050:#F7F5FF;
  --bg-100:#EFEBFF;
  --line:#E8E4F5;
  --white:#FFFFFF;
  --grad-brand:linear-gradient(135deg,#5B3DF5 0%,#8B4BFF 48%,#FF6B4A 100%);
  --grad-deep:linear-gradient(160deg,#14121F 0%,#2A2340 100%);
  --r-sm:10px;
  --r-md:16px;
  --r-lg:24px;
  --r-xl:32px;
  --r-pill:999px;
  --sh-1:0 1px 2px rgba(20,18,31,.04), 0 8px 24px -12px rgba(91,61,245,.18);
  --sh-2:0 24px 60px -24px rgba(91,61,245,.35);
  --sec:96px;
  --font:PingFang SC,HarmonyOS Sans SC,Microsoft YaHei,Source Han Sans SC,system-ui,-apple-system,sans-serif;
}
*,*::before,*::after{box-sizing:border-box;}
html{scroll-behavior:smooth;}
body{
  margin:0;
  font-family:var(--font);
  font-size:16px;
  line-height:28px;
  color:var(--ink-600);
  background:var(--bg-050);
  -webkit-font-smoothing:antialiased;
}
h1,h2,h3,h4,h5,h6{margin:0;color:var(--ink-900);font-family:var(--font);font-weight:700;line-height:1.25;}
p{margin:0;}
a{color:var(--brand-600);text-decoration:none;transition:color .2s ease;}
a:hover{color:var(--brand-500);}
img{max-width:100%;display:block;}
ul,ol{margin:0;padding:0;list-style:none;}
button,input{font-family:inherit;font-size:inherit;}
button{cursor:pointer;border:0;background:none;}
:focus-visible{outline:2px solid var(--brand-400);outline-offset:2px;border-radius:6px;}
.container{width:100%;max-width:1200px;margin:0 auto;padding:0 24px;}
.section{padding:var(--sec) 0;}
.section-tight{padding:72px 0;}
.sec-head{display:flex;align-items:flex-end;justify-content:space-between;gap:24px;margin-bottom:32px;}
.sec-head h2{font-size:30px;line-height:40px;}
.sec-head .sec-sub{margin-top:10px;font-size:15px;color:var(--ink-600);max-width:640px;}
.link-more{font-size:15px;font-weight:600;white-space:nowrap;}
.link-more i{margin-left:6px;font-size:12px;}

/* ---------- 导航 ---------- */
.nav-header{
  position:sticky;top:0;z-index:60;
  background:rgba(255,255,255,.82);
  -webkit-backdrop-filter:blur(12px);
  backdrop-filter:blur(12px);
  transition:box-shadow .25s ease,border-color .25s ease;
  border-bottom:1px solid transparent;
}
.nav-header.is-scrolled{border-bottom:1px solid var(--line);box-shadow:var(--sh-1);}
.nav-inner{
  display:flex;align-items:center;gap:24px;
  height:68px;
}
.logo{display:inline-flex;align-items:center;gap:12px;flex:0 0 auto;color:var(--ink-900);}
.logo:hover{color:var(--ink-900);}
.logo-mark{
  position:relative;width:40px;height:40px;flex:0 0 40px;
  border-radius:12px;background:var(--grad-brand);display:inline-block;
}
.logo-mark .lm-a{position:absolute;left:9px;top:11px;width:19px;height:7px;border-radius:3px;background:rgba(255,255,255,.94);}
.logo-mark .lm-b{position:absolute;left:9px;top:21px;width:13px;height:7px;border-radius:3px;background:rgba(255,255,255,.6);}
.logo-mark .lm-dot{position:absolute;right:9px;bottom:11px;width:6px;height:6px;border-radius:50%;background:#fff;}
.logo-text{font-size:17px;font-weight:700;letter-spacing:0;white-space:nowrap;}
.nav-menu{display:flex;align-items:center;gap:28px;margin-left:8px;flex:1 1 auto;}
.nav-menu a{
  position:relative;font-size:15px;font-weight:600;color:var(--ink-900);
  padding:6px 0;white-space:nowrap;
}
.nav-menu a:hover{color:var(--brand-600);}
.nav-menu a.active{color:var(--brand-600);}
.nav-menu a.active::after{
  content:"";position:absolute;left:0;right:0;bottom:-14px;height:2px;
  background:var(--grad-brand);border-radius:2px;
}
.nav-tools{display:flex;align-items:center;gap:12px;flex:0 0 auto;}
.command-search{
  position:relative;display:flex;align-items:center;
  width:270px;height:40px;padding:0 10px 0 36px;
  background:var(--bg-100);border:1px solid transparent;border-radius:var(--r-sm);
  transition:border-color .2s ease,box-shadow .2s ease,background .2s ease;
}
.command-search i{position:absolute;left:13px;top:50%;transform:translateY(-50%);font-size:13px;color:var(--ink-400);}
.command-search input{
  width:100%;height:100%;border:0;background:transparent;outline:none;
  font-size:14px;color:var(--ink-900);
}
.command-search input::placeholder{color:var(--ink-400);}
.command-search kbd{
  font-family:var(--font);font-size:11px;font-weight:600;color:var(--ink-400);
  background:#fff;border:1px solid var(--line);border-radius:6px;padding:2px 6px;white-space:nowrap;
}
.command-search:focus-within{
  background:#fff;border-color:var(--brand-400);
  box-shadow:0 0 0 3px rgba(167,139,255,.35);
}
.icon-btn{
  width:40px;height:40px;border-radius:50%;display:inline-flex;align-items:center;justify-content:center;
  color:var(--ink-600);background:transparent;transition:background .2s ease,color .2s ease;
}
.icon-btn:hover{background:var(--bg-100);color:var(--brand-600);}
.btn{
  display:inline-flex;align-items:center;justify-content:center;gap:8px;
  font-size:15px;font-weight:600;border-radius:var(--r-pill);
  padding:14px 28px;border:1px solid transparent;
  transition:transform .2s ease,box-shadow .2s ease,background .2s ease,color .2s ease,border-color .2s ease,filter .2s ease;
  white-space:nowrap;
}
.btn-primary{background:var(--grad-brand);color:#fff;box-shadow:var(--sh-1);}
.btn-primary:hover{color:#fff;transform:translateY(-2px);box-shadow:var(--sh-2);filter:brightness(1.05);}
.btn-primary:active{transform:translateY(0);}
.btn-ghost{background:#fff;color:var(--brand-600);border-color:var(--line);}
.btn-ghost:hover{color:var(--brand-600);border-color:var(--brand-600);background:#F3EFFF;}
.btn-outline-light{background:transparent;color:#fff;border-color:rgba(255,255,255,.45);}
.btn-outline-light:hover{color:#fff;border-color:#fff;background:rgba(255,255,255,.12);}
.btn-sm{padding:10px 20px;font-size:14px;}
.btn-nav{padding:11px 22px;font-size:14px;}
.btn:disabled{opacity:.5;cursor:not-allowed;}
.nav-toggle{
  display:none;width:42px;height:42px;border-radius:var(--r-sm);
  align-items:center;justify-content:center;color:var(--ink-900);background:var(--bg-100);
}

/* ---------- Hero ---------- */
.hero{
  position:relative;overflow:hidden;color:#fff;
  background-image:linear-gradient(160deg,rgba(20,18,31,.9),rgba(42,35,64,.88)),url("/assets/images/backpic/back-1.png");
  background-size:cover;background-position:center;
  min-height:560px;display:flex;align-items:center;
  border-bottom-left-radius:var(--r-xl);border-bottom-right-radius:var(--r-xl);
}
.hero::before{
  content:"";position:absolute;inset:0;
  background-image:radial-gradient(rgba(255,255,255,.5) 1px,transparent 1px);
  background-size:22px 22px;opacity:.06;pointer-events:none;
}
.hero-inner{position:relative;z-index:2;padding:88px 0 96px;width:100%;}
.hero-copy{max-width:640px;}
.badge-row{display:flex;flex-wrap:wrap;gap:12px;margin-bottom:24px;}
.d-badge{
  display:inline-flex;align-items:center;gap:6px;
  padding:7px 14px;border-radius:var(--r-pill);
  font-size:12px;font-weight:600;letter-spacing:.02em;line-height:18px;
  color:rgba(255,255,255,.86);
  border:1px solid rgba(167,139,255,.55);
  background:rgba(255,255,255,.06);
}
.d-badge b{color:var(--accent-500);font-size:14px;font-weight:700;}
.hero h1{color:#fff;font-size:44px;line-height:52px;letter-spacing:-.5px;}
.hero-sub{margin-top:20px;font-size:17px;line-height:30px;color:rgba(255,255,255,.82);max-width:560px;}
.hero-actions{display:flex;flex-wrap:wrap;gap:14px;margin-top:32px;}
.hero-note{margin-top:22px;font-size:13px;line-height:22px;color:rgba(255,255,255,.6);}
.glass-panel{
  border-radius:20px;padding:26px;
  background:rgba(255,255,255,.14);
  -webkit-backdrop-filter:blur(16px);
  backdrop-filter:blur(16px);
  border:1px solid rgba(255,255,255,.22);
  box-shadow:0 24px 60px -30px rgba(0,0,0,.6);
}
.glass-panel h3{color:#fff;font-size:16px;font-weight:600;margin-bottom:18px;letter-spacing:.01em;}
.metric{display:flex;align-items:baseline;justify-content:space-between;padding:12px 0;border-bottom:1px dashed rgba(255,255,255,.22);}
.metric:last-of-type{border-bottom:0;}
.metric span{font-size:13px;color:rgba(255,255,255,.74);}
.metric strong{font-size:24px;font-weight:700;color:#fff;letter-spacing:-.4px;}
.metric strong em{font-style:normal;font-size:13px;color:var(--accent-500);margin-left:4px;font-weight:600;}
.glass-foot{margin-top:16px;font-size:12px;line-height:20px;color:rgba(255,255,255,.62);}

/* ---------- 通用块 ---------- */
.crumb{font-size:14px;color:var(--ink-400);padding-top:24px;}
.crumb a{color:var(--ink-400);}
.crumb a:hover{color:var(--brand-600);}
.crumb span.sep{margin:0 8px;color:var(--line);}
.crumb .cur{color:var(--brand-600);font-weight:600;}
.card{
  background:var(--white);border:1px solid var(--line);border-radius:var(--r-lg);
  padding:28px;box-shadow:var(--sh-1);transition:transform .25s ease,box-shadow .25s ease,border-color .25s ease;
}
.card:hover{transform:translateY(-2px);box-shadow:var(--sh-2);border-color:#DCD5F7;}
.card h3{font-size:19px;line-height:28px;margin-bottom:12px;}
.card p{font-size:15px;line-height:26px;color:var(--ink-600);}
.pill{
  display:inline-flex;align-items:center;gap:6px;
  padding:5px 12px;border-radius:var(--r-pill);
  background:var(--bg-100);color:var(--brand-600);
  font-size:12px;font-weight:600;line-height:18px;letter-spacing:.02em;
}
.kv-list li{display:flex;gap:10px;font-size:15px;line-height:26px;padding:8px 0;}
.kv-list i{color:var(--brand-600);font-size:13px;margin-top:7px;}
.grid-gutter{margin-left:-12px;margin-right:-12px;}
.grid-gutter>.cell{padding-left:12px;padding-right:12px;margin-bottom:24px;}

/* ---------- 目录 ---------- */
.catalog{background:var(--bg-100);border-radius:var(--r-xl);padding:40px;}
.catalog-body{display:flex;flex-wrap:wrap;gap:12px;margin-top:24px;}
.catalog-item{
  display:inline-flex;align-items:center;gap:10px;
  padding:12px 20px;border-radius:var(--r-pill);
  background:#fff;border:1px solid var(--line);
  font-size:14px;font-weight:600;color:var(--ink-900);
  transition:border-color .2s ease,color .2s ease,transform .2s ease,box-shadow .2s ease;
}
.catalog-item:hover{border-color:var(--brand-400);color:var(--brand-600);transform:translateY(-2px);box-shadow:var(--sh-1);}
.catalog-item .num{
  display:inline-flex;align-items:center;justify-content:center;
  width:24px;height:24px;border-radius:50%;
  background:var(--grad-brand);color:#fff;font-size:12px;font-weight:700;
}
.catalog-item .count{font-size:12px;font-weight:600;color:var(--brand-600);background:var(--bg-100);border-radius:var(--r-pill);padding:2px 10px;}

/* ---------- 列表卡 ---------- */
.list-card{
  display:flex;gap:20px;padding:20px;border-radius:var(--r-md);
  background:#fff;border:1px solid var(--line);
  transition:background .2s ease,border-color .2s ease,box-shadow .2s ease;
}
.list-card + .list-card{margin-top:14px;}
.list-card:hover{background:var(--bg-050);border-color:#DCD5F7;box-shadow:var(--sh-1);}
.list-card:hover h3 a{color:var(--brand-600);}
.thumb{
  flex:0 0 120px;width:120px;height:80px;border-radius:12px;overflow:hidden;
  background:var(--bg-100);
}
.thumb img{width:100%;height:100%;object-fit:cover;}
.list-body{flex:1 1 auto;min-width:0;}
.list-body h3{font-size:17px;line-height:26px;font-weight:600;margin-bottom:8px;}
.list-body h3 a{color:var(--ink-900);}
.list-body p{
  font-size:14px;line-height:24px;color:var(--ink-600);
  display:-webkit-box;-webkit-line-clamp:2;-webkit-box-orient:vertical;overflow:hidden;
}
.list-meta{display:flex;flex-wrap:wrap;align-items:center;gap:12px;margin-top:12px;font-size:13px;color:var(--ink-400);}
.list-meta .go{font-weight:600;color:var(--brand-600);margin-left:auto;}
.list-meta .go i{font-size:11px;margin-left:4px;}

/* ---------- 步骤 ---------- */
.steps{counter-reset:step;}
.step{
  display:flex;gap:16px;padding:22px 24px;background:#fff;
  border:1px solid var(--line);border-radius:var(--r-md);
}
.step + .step{margin-top:14px;}
.step-num{
  flex:0 0 40px;width:40px;height:40px;border-radius:14px;
  background:var(--bg-100);color:var(--brand-600);
  display:flex;align-items:center;justify-content:center;font-weight:700;font-size:15px;
}
.step h4{font-size:17px;line-height:26px;margin-bottom:6px;}
.step p{font-size:15px;line-height:26px;}

/* ---------- 交叉推荐 ---------- */
.cross-card{
  display:block;background:#fff;border:1px solid var(--line);border-radius:var(--r-lg);
  overflow:hidden;height:100%;transition:transform .25s ease,box-shadow .25s ease,border-color .25s ease;
}
.cross-card:hover{transform:translateY(-2px);box-shadow:var(--sh-2);border-color:#DCD5F7;}
.cross-cover{aspect-ratio:16/9;background:var(--bg-100);overflow:hidden;}
.cross-cover img{width:100%;height:100%;object-fit:cover;}
.cross-body{padding:22px 24px 24px;}
.cross-body h3{font-size:18px;line-height:28px;margin:12px 0 10px;color:var(--ink-900);}
.cross-body p{font-size:14px;line-height:24px;color:var(--ink-600);}
.cross-body .cross-go{display:inline-flex;align-items:center;gap:6px;margin-top:16px;font-size:14px;font-weight:600;color:var(--brand-600);}

/* ---------- 侧栏卡 ---------- */
.side-card{
  background:#fff;border:1px solid var(--line);border-radius:var(--r-lg);
  padding:26px;box-shadow:var(--sh-1);
}
.side-card + .side-card{margin-top:20px;}
.side-card h3{font-size:17px;line-height:26px;margin-bottom:14px;}
.side-list li{
  display:flex;align-items:flex-start;gap:10px;
  font-size:14px;line-height:24px;padding:10px 0;border-bottom:1px dashed var(--line);
  color:var(--ink-600);
}
.side-list li:last-child{border-bottom:0;}
.side-list i{color:var(--brand-600);font-size:12px;margin-top:6px;}
.side-cta{margin-top:18px;display:flex;flex-direction:column;gap:10px;}

/* ---------- FAQ ---------- */
.faq-wrap{display:grid;grid-template-columns:minmax(0,1fr);gap:32px;}
.faq-item{border-bottom:1px solid var(--line);}
.faq-item:first-child{border-top:1px solid var(--line);}
.faq-item summary{
  list-style:none;cursor:pointer;display:flex;align-items:center;gap:16px;
  padding:22px 0 22px 0;position:relative;
}
.faq-item summary::-webkit-details-marker{display:none;}
.faq-item summary h3{font-size:17px;font-weight:600;line-height:26px;flex:1 1 auto;}
.faq-plus{
  flex:0 0 26px;width:26px;height:26px;border-radius:50%;
  background:var(--bg-100);color:var(--brand-600);
  display:flex;align-items:center;justify-content:center;font-size:13px;
  transition:transform .2s ease,background .2s ease,color .2s ease;
}
.faq-item[open] .faq-plus{transform:rotate(45deg);background:var(--brand-600);color:#fff;}
.faq-answer{padding:0 0 22px;font-size:15px;line-height:26px;color:var(--ink-600);}
.faq-item[open]{position:relative;}
.faq-item[open]::before{
  content:"";position:absolute;left:-16px;top:18px;bottom:18px;width:3px;
  border-radius:3px;background:var(--grad-brand);
}
.faq-item summary:hover h3{color:var(--brand-600);}

/* ---------- CTA ---------- */
.cta-band{
  position:relative;overflow:hidden;border-radius:var(--r-xl);
  background:var(--grad-deep);color:#fff;padding:56px;
}
.cta-band::after{
  content:"";position:absolute;right:-80px;top:-80px;width:320px;height:320px;border-radius:50%;
  background:radial-gradient(circle,rgba(255,107,74,.35),transparent 68%);
}
.cta-inner{position:relative;z-index:2;display:flex;flex-wrap:wrap;gap:32px;align-items:center;justify-content:space-between;}
.cta-band h2{color:#fff;font-size:30px;line-height:40px;max-width:560px;}
.cta-band p{margin-top:14px;font-size:15px;line-height:26px;color:rgba(255,255,255,.78);max-width:560px;}
.cta-actions{display:flex;align-items:center;gap:14px;flex-wrap:wrap;}
.round-btn{
  width:52px;height:52px;border-radius:50%;display:inline-flex;align-items:center;justify-content:center;
  border:1px solid rgba(255,255,255,.4);color:#fff;background:transparent;
  transition:background .2s ease,border-color .2s ease,transform .2s ease;
}
.round-btn:hover{background:rgba(255,255,255,.14);border-color:#fff;color:#fff;transform:translateY(-2px);}
.cta-foot{position:relative;z-index:2;margin-top:28px;font-size:13px;color:rgba(255,255,255,.6);}
.cta-foot a{color:var(--brand-400);}
.cta-foot a:hover{color:var(--accent-500);}

/* ---------- 页脚 ---------- */
.site-footer{background:#14121F;color:#9C97B5;padding:72px 0 0;margin-top:var(--sec);}
.footer-grid{
  display:grid;grid-template-columns:1.6fr 1fr 1fr 1.2fr;
  gap:32px;padding-bottom:48px;border-bottom:1px solid rgba(255,255,255,.1);
}
.footer-brand{display:flex;align-items:center;gap:12px;margin-bottom:18px;}
.footer-logo-text{color:#fff;font-size:17px;font-weight:700;}
.footer-desc{font-size:14px;line-height:24px;margin-bottom:12px;max-width:340px;}
.footer-desc.muted{color:#7A7590;}
.footer-col h4{color:#fff;font-size:15px;font-weight:600;margin-bottom:16px;}
.footer-links{display:flex;flex-direction:column;gap:10px;}
.footer-links a{color:var(--brand-400);font-size:14px;line-height:22px;}
.footer-links a:hover{color:var(--accent-500);}
.footer-bottom{
  display:flex;flex-wrap:wrap;gap:12px;align-items:center;justify-content:space-between;
  padding:22px 0 28px;font-size:13px;color:#7A7590;
}
.footer-bottom a{color:var(--brand-400);}
.footer-bottom a:hover{color:var(--accent-500);}

/* ---------- 响应式 ---------- */
@media screen and (max-width:1200px){
  :root{--sec:80px;}
  .nav-menu{gap:20px;}
  .command-search{width:210px;}
}
@media screen and (max-width:1024px){
  .command-search{display:none;}
  .hero h1{font-size:36px;line-height:46px;}
  .hero-inner{padding:72px 0 80px;}
}
@media screen and (max-width:900px){
  :root{--sec:72px;}
  .section-tight{padding:56px 0;}
  .nav-menu{
    position:fixed;left:0;right:0;top:60px;bottom:0;
    flex-direction:column;align-items:stretch;gap:0;
    background:#fff;padding:16px 24px 32px;overflow-y:auto;
    display:none;
  }
  body.nav-open .nav-menu{display:flex;}
  .nav-menu a{
    font-size:18px;line-height:56px;padding:0;border-bottom:1px solid var(--line);
  }
  .nav-menu a.active::after{display:none;}
  .nav-menu a.active{color:var(--brand-600);}
  .nav-toggle{display:inline-flex;}
  .nav-inner{height:60px;gap:12px;}
  .logo-text{font-size:15px;}
  .nav-tools .btn-nav{display:none;}
  .nav-tools .icon-btn{display:none;}
  .hero{min-height:480px;border-radius:0;}
  .hero h1{font-size:30px;line-height:38px;}
  .hero-sub{font-size:15px;line-height:27px;}
  .glass-panel{margin-top:32px;}
  .sec-head h2{font-size:24px;line-height:32px;}
  .catalog{padding:28px 22px;}
  .cta-band{padding:36px 26px;}
  .cta-band h2{font-size:24px;line-height:32px;}
  .footer-grid{grid-template-columns:1fr 1fr;gap:28px;}
}
@media screen and (max-width:640px){
  :root{--sec:48px;}
  .container{padding:0 18px;}
  .section-tight{padding:44px 0;}
  .sec-head{flex-direction:column;align-items:flex-start;gap:12px;margin-bottom:24px;}
  .grid-gutter{margin-left:0;margin-right:0;}
  .grid-gutter>.cell{padding-left:0;padding-right:0;}
  .list-card{flex-direction:column;gap:14px;padding:18px;}
  .thumb{flex:0 0 auto;width:100%;height:auto;aspect-ratio:16/9;}
  .list-meta .go{margin-left:0;}
  .card{padding:22px;}
  .footer-grid{grid-template-columns:1fr;gap:24px;}
  .cta-inner{flex-direction:column;align-items:flex-start;}
  .cta-actions{width:100%;}
  .cta-actions .btn{flex:1 1 auto;}
}

/* roulang page: category3 */
:root{
  --brand-600:#5B3DF5;
  --brand-500:#7A5CFF;
  --brand-400:#A78BFF;
  --accent-500:#FF6B4A;
  --accent-100:#FFE6DF;
  --ink-900:#14121F;
  --ink-600:#5C5870;
  --ink-400:#8B8798;
  --bg-050:#F7F5FF;
  --bg-100:#EFEBFF;
  --line:#E8E4F5;
  --white:#FFFFFF;
  --grad-brand:linear-gradient(135deg,#5B3DF5 0%,#8B4BFF 48%,#FF6B4A 100%);
  --grad-deep:linear-gradient(160deg,#14121F 0%,#2A2340 100%);
  --r-sm:10px;
  --r-md:16px;
  --r-lg:24px;
  --r-xl:32px;
  --r-pill:999px;
  --sh-1:0 1px 2px rgba(20,18,31,.04), 0 8px 24px -12px rgba(91,61,245,.18);
  --sh-2:0 24px 60px -24px rgba(91,61,245,.35);
}
*,*::before,*::after{box-sizing:border-box}
html{-webkit-text-size-adjust:100%}
body{
  margin:0;
  font-family:"PingFang SC","HarmonyOS Sans SC","Microsoft YaHei","Source Han Sans SC",system-ui,sans-serif;
  font-size:16px;
  line-height:1.75;
  color:var(--ink-600);
  background:var(--bg-050);
  overflow-x:hidden;
  -webkit-font-smoothing:antialiased;
}
body.nav-open{overflow:hidden}
h1,h2,h3,h4{margin:0;color:var(--ink-900);font-weight:700;line-height:1.32;font-family:inherit}
p{margin:0}
ul,ol{margin:0;padding:0;list-style:none}
a{color:var(--brand-600);text-decoration:none;transition:color .2s ease}
a:hover{color:var(--brand-500)}
img{max-width:100%;height:auto;display:block}
button{font-family:inherit;font-size:inherit}
input{font-family:inherit}
.container{width:100%;max-width:1200px;margin:0 auto;padding:0 24px}
@media (min-width:1440px){.container{padding:0 32px}}
.section{padding:96px 0}
.section-alt{background:var(--bg-100)}
@media (max-width:900px){.section{padding:72px 0}}
@media (max-width:640px){.section{padding:48px 0}}
.section-head{max-width:740px;margin-bottom:34px}
.section-head h2{font-size:30px;line-height:1.4}
.section-head p{margin-top:12px;color:var(--ink-600);font-size:16px}

/* 按钮 */
.btn{display:inline-flex;align-items:center;justify-content:center;gap:8px;padding:14px 28px;border-radius:var(--r-pill);font-size:15px;font-weight:600;border:1px solid transparent;cursor:pointer;transition:transform .22s ease,box-shadow .22s ease,background .22s ease,border-color .22s ease,color .22s ease;text-align:center}
.btn-primary{background:var(--grad-brand);color:#fff;box-shadow:0 12px 28px -16px rgba(91,61,245,.9)}
.btn-primary:hover{transform:translateY(-2px);box-shadow:var(--sh-2);filter:brightness(1.05);color:#fff}
.btn-primary:active{transform:translateY(0)}
.btn-ghost{background:#fff;border-color:var(--line);color:var(--brand-600)}
.btn-ghost:hover{border-color:var(--brand-500);background:#F3EFFF;color:var(--brand-600)}
.btn-outline-light{background:transparent;border-color:rgba(255,255,255,.55);color:#fff}
.btn-outline-light:hover{background:rgba(255,255,255,.14);border-color:#fff;color:#fff}
.btn-sm{padding:10px 20px;font-size:14px}
.btn:focus-visible{outline:2px solid var(--brand-400);outline-offset:2px}
.icon-btn{width:48px;height:48px;border-radius:50%;display:inline-flex;align-items:center;justify-content:center;border:1px solid rgba(255,255,255,.42);background:transparent;color:#fff;cursor:pointer;transition:.22s}
.icon-btn:hover{background:rgba(255,255,255,.16);border-color:#fff;transform:translateY(-2px)}
.icon-btn:focus-visible{outline:2px solid var(--brand-400);outline-offset:2px}

/* 徽章 */
.pill{display:inline-flex;align-items:center;padding:3px 12px;border-radius:var(--r-pill);background:var(--bg-100);color:var(--brand-600);font-size:12px;font-weight:600;letter-spacing:.02em;white-space:nowrap}
.pill-accent{background:var(--accent-100);color:#C0391B}

/* 顶部导航 */
.site-header{position:sticky;top:0;z-index:100;background:rgba(255,255,255,.82);backdrop-filter:blur(12px);-webkit-backdrop-filter:blur(12px);border-bottom:1px solid transparent;transition:border-color .25s ease,box-shadow .25s ease}
.site-header.is-scrolled{border-bottom-color:var(--line);box-shadow:var(--sh-1)}
.nav-wrap{display:flex;align-items:center;gap:20px;height:68px}
.brand{display:flex;align-items:center;gap:10px;flex:0 0 auto}
.logo-mark{position:relative;width:40px;height:40px;border-radius:12px;background:var(--grad-brand);flex:0 0 auto;display:block;box-shadow:0 8px 18px -10px rgba(91,61,245,.9)}
.logo-mark .lm-a{position:absolute;left:9px;top:11px;width:16px;height:8px;border-radius:3px;background:rgba(255,255,255,.95)}
.logo-mark .lm-b{position:absolute;left:15px;top:21px;width:16px;height:8px;border-radius:3px;background:rgba(255,255,255,.6)}
.logo-mark .lm-dot{position:absolute;right:8px;bottom:8px;width:6px;height:6px;border-radius:50%;background:#fff}
.brand-text{font-size:17px;font-weight:700;color:var(--ink-900);letter-spacing:0;white-space:nowrap}
.nav-menu{display:flex;align-items:center;justify-content:center;gap:28px;flex:1 1 auto}
.nav-menu a{position:relative;font-size:15px;font-weight:600;color:var(--ink-900);padding:8px 0;white-space:nowrap}
.nav-menu a:hover{color:var(--brand-600)}
.nav-menu a.active{color:var(--brand-600)}
.nav-menu a.active::after{content:"";position:absolute;left:50%;bottom:0;transform:translateX(-50%);width:20px;height:2px;border-radius:2px;background:var(--grad-brand)}
.nav-actions{display:flex;align-items:center;gap:14px;flex:0 0 auto}
.command-search{position:relative;display:flex;align-items:center;width:270px;height:40px;padding:0 10px 0 34px;border:1px solid var(--line);border-radius:var(--r-sm);background:#fff;transition:border-color .2s ease,box-shadow .2s ease}
.command-search i{position:absolute;left:12px;font-size:13px;color:var(--ink-400)}
.command-search input{width:100%;border:0;outline:0;background:transparent;font-size:14px;color:var(--ink-900);line-height:1.4}
.command-search input::placeholder{color:var(--ink-400)}
.command-search kbd{flex:0 0 auto;padding:2px 7px;border-radius:6px;border:1px solid var(--line);background:var(--bg-050);font-size:11px;font-weight:600;color:var(--ink-400);font-family:inherit}
.command-search:focus-within{border-color:var(--brand-500);box-shadow:0 0 0 3px rgba(122,92,255,.22)}
.nav-toggle{display:none;flex-direction:column;justify-content:center;gap:5px;width:42px;height:42px;padding:0 10px;border:1px solid var(--line);border-radius:var(--r-sm);background:#fff;cursor:pointer}
.nav-toggle span{display:block;height:2px;border-radius:2px;background:var(--ink-900);transition:.22s}
.nav-toggle.is-active span:nth-child(1){transform:translateY(7px) rotate(45deg)}
.nav-toggle.is-active span:nth-child(2){opacity:0}
.nav-toggle.is-active span:nth-child(3){transform:translateY(-7px) rotate(-45deg)}

/* Hero */
.hero{position:relative;background:var(--grad-deep);color:#fff;overflow:hidden;padding:76px 0 72px}
.hero::before{content:"";position:absolute;inset:0;background-image:url(/assets/images/backpic/back-3.webp);background-size:cover;background-position:center;opacity:.28}
.hero::after{content:"";position:absolute;inset:0;background-image:radial-gradient(rgba(255,255,255,.16) 1px,transparent 1px);background-size:22px 22px;opacity:.06}
.hero .container{position:relative;z-index:2}
.hero-badges{display:flex;flex-wrap:wrap;gap:10px;margin-bottom:20px}
.hero-badge{display:inline-flex;align-items:center;gap:6px;padding:6px 14px;border-radius:var(--r-pill);font-size:12px;font-weight:600;letter-spacing:.02em;color:#fff;background:linear-gradient(#1c1930,#1c1930) padding-box,var(--grad-brand) border-box;border:1px solid transparent}
.hero-badge b{color:var(--accent-500);font-weight:700;font-size:13px}
.hero h1{font-size:44px;line-height:1.25;color:#fff;max-width:640px}
.hero-sub{margin-top:18px;max-width:560px;font-size:16px;line-height:1.85;color:rgba(255,255,255,.82)}
.hero-btns{display:flex;flex-wrap:wrap;gap:14px;margin-top:30px}
.hero-panel{margin-top:34px;padding:26px;border-radius:20px;background:rgba(255,255,255,.14);border:1px solid rgba(255,255,255,.22);backdrop-filter:blur(16px);-webkit-backdrop-filter:blur(16px)}
.panel-label{margin-bottom:16px;font-size:12px;font-weight:600;letter-spacing:.06em;color:rgba(255,255,255,.72)}
.panel-metrics{display:flex;gap:22px;flex-wrap:wrap}
.metric{display:flex;flex-direction:column;gap:2px;min-width:78px}
.metric-num{font-size:26px;font-weight:700;color:var(--accent-500);line-height:1.2}
.metric-cap{font-size:12px;color:rgba(255,255,255,.78)}
.panel-note{margin-top:18px;padding-top:16px;border-top:1px solid rgba(255,255,255,.16);font-size:13px;line-height:1.75;color:rgba(255,255,255,.74)}
@media (max-width:900px){
  .hero{padding:56px 0 52px}
  .hero h1{font-size:34px}
  .hero-panel{margin-top:28px}
}
@media (max-width:640px){
  .hero h1{font-size:30px;line-height:1.3}
  .hero-sub{font-size:15px}
  .hero-btns .btn{width:100%}
}

/* 目录 + 列表 */
.catalog-box{position:sticky;top:92px;padding:28px;background:#fff;border:1px solid var(--line);border-radius:var(--r-lg);box-shadow:var(--sh-1)}
.catalog-label{margin-bottom:8px;font-size:12px;font-weight:600;letter-spacing:.06em;color:var(--brand-500)}
.catalog-box h2{font-size:22px;line-height:1.4}
.catalog-box .catalog-intro{margin-top:10px;font-size:14px;line-height:1.75;color:var(--ink-400)}
.catalog-list{margin-top:20px}
.catalog-list li+li{margin-top:6px}
.catalog-list a{display:flex;align-items:center;gap:10px;padding:12px 14px;border-radius:var(--r-sm);background:var(--bg-050);font-size:15px;font-weight:600;color:var(--ink-900);transition:.2s}
.catalog-list a:hover{background:var(--bg-100);color:var(--brand-600);transform:translateX(2px)}
.catalog-list .idx{font-size:12px;font-weight:700;color:var(--brand-500)}
.catalog-list .go{margin-left:auto;font-size:12px;color:var(--ink-400)}
.catalog-tip{margin-top:20px;padding:16px;border-radius:var(--r-md);background:var(--accent-100);font-size:13px;line-height:1.8;color:#8A3A20}
.list-head{margin-bottom:22px}
.list-head h2{font-size:26px}
.list-head p{margin-top:10px;font-size:15px;color:var(--ink-400)}
.entry-list{border-top:1px solid var(--line)}
.entry{display:flex;gap:20px;padding:22px 12px;border-bottom:1px solid var(--line);border-radius:var(--r-md);transition:background .22s ease}
.entry:hover{background:var(--bg-050)}
.entry-thumb{flex:0 0 120px;width:120px;height:80px;border-radius:12px;overflow:hidden;background:var(--bg-100)}
.entry-thumb img{width:100%;height:100%;object-fit:cover}
.entry-body{flex:1 1 auto;min-width:0}
.entry-top{display:flex;align-items:center;gap:10px;margin-bottom:8px;flex-wrap:wrap}
.entry-time{font-size:12px;color:var(--ink-400)}
.entry h3{font-size:17px;font-weight:600;line-height:1.55}
.entry h3 a{color:var(--ink-900)}
.entry:hover h3 a{color:var(--brand-600)}
.entry p{margin-top:8px;font-size:14px;line-height:1.75;color:var(--ink-600);display:-webkit-box;-webkit-line-clamp:2;-webkit-box-orient:vertical;overflow:hidden}
.entry-link{display:inline-flex;align-items:center;gap:6px;margin-top:10px;font-size:13px;font-weight:600;color:var(--brand-600)}
@media (max-width:900px){
  .catalog-box{position:static;margin-bottom:32px}
}
@media (max-width:640px){
  .entry{flex-direction:column;padding:20px 0}
  .entry-thumb{flex:none;width:100%;height:auto;aspect-ratio:16/9}
  .list-head h2{font-size:22px}
}

/* 流程 */
.step-card{height:100%;padding:26px;background:#fff;border:1px solid var(--line);border-radius:var(--r-lg);box-shadow:var(--sh-1);transition:transform .24s ease,box-shadow .24s ease,border-color .24s ease}
.step-card:hover{transform:translateY(-4px);box-shadow:var(--sh-2);border-color:var(--brand-400)}
.step-num{display:inline-flex;align-items:center;justify-content:center;width:36px;height:36px;margin-bottom:16px;border-radius:12px;background:var(--grad-brand);color:#fff;font-size:14px;font-weight:700}
.step-card h3{font-size:19px;line-height:1.45}
.step-card p{margin-top:10px;font-size:15px;line-height:1.78}

/* 场景卡 */
.scene-card{height:100%;padding:28px;background:#fff;border:1px solid var(--line);border-radius:var(--r-lg);transition:transform .24s ease,box-shadow .24s ease}
.scene-card:hover{transform:translateY(-4px);box-shadow:var(--sh-2)}
.scene-icon{display:inline-flex;align-items:center;justify-content:center;width:48px;height:48px;margin-bottom:18px;border-radius:16px;background:var(--bg-100);color:var(--brand-600);font-size:19px}
.scene-card h3{font-size:19px}
.scene-card p{margin-top:10px;font-size:15px;line-height:1.78}

/* 交叉推荐 */
.rec-card{display:flex;flex-direction:column;height:100%;background:#fff;border:1px solid var(--line);border-radius:var(--r-lg);overflow:hidden;transition:transform .24s ease,box-shadow .24s ease,border-color .24s ease}
.rec-card:hover{transform:translateY(-4px);box-shadow:var(--sh-2);border-color:var(--brand-400)}
.rec-cover{aspect-ratio:16/10;overflow:hidden;background:var(--bg-100)}
.rec-cover img{width:100%;height:100%;object-fit:cover;transition:transform .4s ease}
.rec-card:hover .rec-cover img{transform:scale(1.04)}
.rec-body{display:flex;flex-direction:column;gap:10px;flex:1 1 auto;padding:22px}
.rec-body h3{font-size:19px;line-height:1.45}
.rec-body h3 a{color:var(--ink-900)}
.rec-card:hover .rec-body h3 a{color:var(--brand-600)}
.rec-body p{font-size:14px;line-height:1.75}
.rec-more{margin-top:auto;font-size:14px;font-weight:600;color:var(--brand-600)}

/* FAQ */
.faq-side h2{font-size:30px;line-height:1.4}
.faq-side p{margin-top:14px;font-size:16px;line-height:1.8}
.faq-side .faq-tip{margin-top:20px;padding:18px;border-radius:var(--r-md);background:#fff;border:1px solid var(--line);font-size:14px;line-height:1.8;box-shadow:var(--sh-1)}
.faq-list{margin-top:8px}
.faq-item{position:relative;border-bottom:1px solid var(--line);padding-left:0;transition:padding-left .2s ease}
.faq-item::before{content:"";position:absolute;left:0;top:16px;bottom:16px;width:3px;border-radius:3px;background:var(--grad-brand);opacity:0;transition:opacity .2s ease}
.faq-item[open]{padding-left:14px}
.faq-item[open]::before{opacity:1}
.faq-item summary{display:flex;align-items:center;gap:14px;padding:20px 0;font-size:17px;font-weight:600;color:var(--ink-900);cursor:pointer;list-style:none}
.faq-item summary::-webkit-details-marker{display:none}
.faq-item[open] summary{color:var(--brand-600)}
.faq-icon{position:relative;flex:0 0 auto;width:18px;height:18px;margin-left:auto}
.faq-icon::before,.faq-icon::after{content:"";position:absolute;background:var(--brand-600);border-radius:2px;transition:transform .2s ease,opacity .2s ease}
.faq-icon::before{left:0;top:8px;width:18px;height:2px}
.faq-icon::after{left:8px;top:0;width:2px;height:18px}
.faq-item[open] .faq-icon::after{transform:rotate(90deg);opacity:0}
.faq-answer{padding:0 0 22px;font-size:15px;line-height:1.85;color:var(--ink-600)}
.faq-answer p+p{margin-top:12px}
@media (max-width:900px){
  .faq-side{margin-bottom:28px}
  .faq-side h2{font-size:24px}
}

/* CTA */
.cta-box{position:relative;overflow:hidden;padding:56px;border-radius:var(--r-xl);background:var(--grad-deep);color:#fff}
.cta-box::before{content:"";position:absolute;inset:0;background-image:url(/assets/images/backpic/back-1.png);background-size:cover;background-position:center;opacity:.2}
.cta-box::after{content:"";position:absolute;inset:0;background-image:radial-gradient(rgba(255,255,255,.18) 1px,transparent 1px);background-size:24px 24px;opacity:.06}
.cta-inner{position:relative;z-index:2}
.cta-box h2{color:#fff;font-size:30px;line-height:1.4}
.cta-box p{margin-top:14px;max-width:640px;font-size:16px;line-height:1.8;color:rgba(255,255,255,.84)}
.cta-actions{display:flex;align-items:center;gap:14px;flex-wrap:wrap;margin-top:26px}
.cta-link{margin-top:26px;font-size:14px;color:rgba(255,255,255,.72)}
.cta-link a{color:#A78BFF}
.cta-link a:hover{color:var(--accent-500)}
@media (max-width:900px){
  .cta-box{padding:40px 28px}
  .cta-box h2{font-size:24px}
}
@media (max-width:640px){
  .cta-box{padding:32px 22px}
  .cta-actions .btn{width:100%}
  .cta-actions .icon-btn{width:100%;border-radius:var(--r-pill)}
}

/* 页脚 */
.site-footer{margin-top:0;padding:72px 0 28px;background:#14121F;color:#C9C5DA}
.footer-top{padding-bottom:40px;border-bottom:1px solid rgba(255,255,255,.08)}
.footer-grid{display:flex;flex-wrap:wrap;gap:40px}
.footer-col{flex:1 1 200px;min-width:0}
.footer-col:first-child{flex:1 1 320px}
.footer-brand{display:flex;align-items:center;gap:10px;margin-bottom:16px}
.footer-logo-text{font-size:17px;font-weight:700;color:#fff}
.footer-desc{max-width:430px;font-size:14px;line-height:1.85;color:#A8A3BD}
.footer-desc.muted{margin-top:10px;color:#807B96}
.footer-col h4{margin-bottom:16px;font-size:15px;color:#fff}
.footer-links{display:flex;flex-direction:column;gap:10px}
.footer-links a{font-size:14px;color:#A78BFF}
.footer-links a:hover{color:var(--accent-500)}
.footer-bottom{display:flex;justify-content:space-between;flex-wrap:wrap;gap:12px;padding-top:24px;font-size:13px;color:#807B96}
.footer-bottom a{color:#A78BFF}
.footer-bottom a:hover{color:var(--accent-500)}

/* 移动端导航 */
@media (max-width:899px){
  .nav-wrap{height:60px}
  .nav-menu{position:absolute;top:100%;left:0;right:0;display:flex;flex-direction:column;align-items:stretch;justify-content:flex-start;gap:0;min-height:calc(100vh - 60px);padding:12px 24px 48px;background:#fff;border-top:1px solid var(--line);box-shadow:0 24px 40px -24px rgba(20,18,31,.3);transform:translateY(-130%);opacity:0;pointer-events:none;transition:transform .28s ease,opacity .2s ease;overflow-y:auto}
  .nav-menu.is-open{transform:translateY(0);opacity:1;pointer-events:auto}
  .nav-menu a{padding:18px 0;font-size:18px;border-bottom:1px solid var(--line)}
  .nav-menu a.active::after{display:none}
  .command-search,.nav-cta{display:none}
  .nav-toggle{display:flex;margin-left:auto}
  .brand-text{font-size:16px}
}
@media (max-width:640px){
  .brand-text{font-size:15px}
  .logo-mark{width:36px;height:36px;border-radius:11px}
  .section-head h2{font-size:24px}
}