/* roulang page: index */
:root{
  --brand-1:#6C3BFF;
  --brand-2:#FF4D8D;
  --gold:#FFC24B;
  --cyan:#2ED3A0;
  --orange:#FF6A3D;
  --ink-900:#0B0918;
  --ink-800:#171233;
  --paper:#F7F5FF;
  --card:#FFFFFF;
  --text-strong:#1A1433;
  --text-muted:#6B6486;
  --line:rgba(26,20,51,.10);
  --line-dark:rgba(255,255,255,.10);
  --grad:linear-gradient(135deg,#6C3BFF 0%,#FF4D8D 100%);
  --shadow-card:0 12px 32px -12px rgba(20,12,60,.18),0 2px 6px rgba(20,12,60,.06);
  --shadow-pop:0 24px 60px -20px rgba(108,59,255,.35);
  --r-lg:28px;
  --r-md:20px;
  --r-sm:12px;
  --side-w:248px;
  --side-w-collapsed:88px;
}
*,*::before,*::after{box-sizing:border-box;}
html{-webkit-text-size-adjust:100%;}
body{
  margin:0;
  font-family:-apple-system,"PingFang SC","Microsoft YaHei","Source Han Sans SC",sans-serif;
  background:var(--ink-900);
  color:#F3F1FB;
  font-size:16px;
  line-height:1.8;
  -webkit-font-smoothing:antialiased;
}
img{max-width:100%;display:block;}
a{color:inherit;text-decoration:none;}
button{font-family:inherit;cursor:pointer;border:none;background:none;color:inherit;}
input{font-family:inherit;}
h1,h2,h3,h4,p,ul,ol,figure{margin:0;}
ul,ol{padding:0;list-style:none;}
:focus-visible{outline:3px solid var(--gold);outline-offset:2px;border-radius:8px;}
.num{font-variant-numeric:tabular-nums;}

/* ============ 基础骨架 ============ */
.shell-side{
  position:fixed;top:0;left:0;bottom:0;width:var(--side-w);
  background:var(--ink-800);
  border-right:1px solid var(--line-dark);
  display:flex;flex-direction:column;
  padding:22px 16px 20px;
  z-index:70;
  transition:width .25s ease,transform .25s ease;
}
body.nav-collapsed .shell-side{width:var(--side-w-collapsed);}
.shell-main{
  margin-left:var(--side-w);
  min-height:100vh;
  transition:margin-left .25s ease;
  position:relative;
  background:
    radial-gradient(2px 2px at 12% 8%,rgba(255,255,255,.35),transparent 60%),
    radial-gradient(1.5px 1.5px at 78% 14%,rgba(255,255,255,.30),transparent 60%),
    radial-gradient(2px 2px at 44% 42%,rgba(255,255,255,.22),transparent 60%),
    radial-gradient(1.5px 1.5px at 88% 66%,rgba(255,255,255,.25),transparent 60%),
    radial-gradient(2px 2px at 22% 82%,rgba(255,255,255,.20),transparent 60%),
    var(--ink-900);
}
body.nav-collapsed .shell-main{margin-left:var(--side-w-collapsed);}
.container{max-width:1200px;margin:0 auto;padding:0 32px;}

/* ============ 侧栏品牌与导航 ============ */
.brand{display:flex;align-items:center;gap:12px;padding:6px 6px 18px;}
.brand-mark{
  flex:0 0 40px;width:40px;height:40px;border-radius:13px;
  background:var(--grad);display:flex;align-items:center;justify-content:center;
  font-weight:800;font-size:18px;color:#fff;letter-spacing:.02em;
  box-shadow:0 10px 24px -12px rgba(108,59,255,.9);
}
.brand-text{min-width:0;}
.brand-text strong{display:block;font-size:15px;font-weight:700;color:#fff;letter-spacing:.01em;white-space:nowrap;}
.brand-text em{display:block;font-style:normal;font-size:12px;color:rgba(255,255,255,.5);letter-spacing:.06em;}
body.nav-collapsed .brand-text{display:none;}

.side-nav{display:flex;flex-direction:column;gap:6px;margin-top:6px;}
.nav-item{
  position:relative;display:flex;align-items:center;gap:12px;
  height:48px;padding:0 14px;border-radius:14px;
  font-size:15px;color:rgba(255,255,255,.72);
  transition:background .2s ease,transform .2s ease,color .2s ease;
}
.nav-item svg{flex:0 0 20px;}
.nav-item:hover{background:rgba(255,255,255,.07);color:#fff;transform:translateX(2px);}
.nav-item.active{
  color:#fff;font-weight:600;
  background:linear-gradient(135deg,rgba(108,59,255,.32),rgba(255,77,141,.18));
}
.nav-item.active::before{
  content:'';position:absolute;left:0;top:10px;bottom:10px;width:3px;
  border-radius:3px;background:var(--grad);
}
body.nav-collapsed .nav-label{display:none;}
body.nav-collapsed .nav-item{justify-content:center;padding:0;}

.side-bottom{margin-top:auto;padding-top:18px;border-top:1px solid var(--line-dark);}
.side-cta{
  display:block;width:100%;text-align:center;height:46px;line-height:46px;
  border-radius:999px;background:var(--grad);color:#fff;font-size:14px;font-weight:600;
  transition:transform .2s ease,box-shadow .2s ease,filter .2s ease;
}
.side-cta:hover{transform:translateY(-2px);box-shadow:var(--shadow-pop);filter:brightness(1.06);}
.side-contact{font-size:12px;color:rgba(255,255,255,.45);line-height:1.7;margin-top:12px;}
body.nav-collapsed .side-contact,body.nav-collapsed .side-cta span{display:none;}
.side-collapse{
  position:absolute;top:26px;right:14px;width:30px;height:30px;border-radius:10px;
  display:flex;align-items:center;justify-content:center;
  background:rgba(255,255,255,.08);color:rgba(255,255,255,.7);font-size:14px;
}
.side-collapse:hover{background:rgba(255,255,255,.16);color:#fff;}
body.nav-collapsed .side-collapse{right:50%;transform:translateX(50%);top:auto;bottom:26px;}

/* ============ 移动端顶部栏与抽屉 ============ */
.topbar{
  display:none;position:sticky;top:0;z-index:65;height:60px;
  align-items:center;justify-content:space-between;
  padding:0 16px;background:rgba(11,9,24,.92);
  border-bottom:1px solid var(--line-dark);
  backdrop-filter:blur(6px);
  transition:box-shadow .2s ease;
}
.topbar.scrolled{box-shadow:0 12px 30px -18px rgba(0,0,0,.9);}
.topbar-brand{display:flex;align-items:center;gap:10px;}
.topbar-brand .brand-mark{width:34px;height:34px;flex-basis:34px;font-size:15px;border-radius:11px;}
.topbar-brand strong{font-size:14px;font-weight:700;color:#fff;}
.topbar-page{font-size:12px;color:rgba(255,255,255,.5);}
.menu-btn{width:40px;height:40px;border-radius:12px;display:flex;align-items:center;justify-content:center;background:rgba(255,255,255,.08);}
.menu-btn:hover{background:rgba(255,255,255,.16);}
.shell-overlay{
  position:fixed;inset:0;background:rgba(11,9,24,.62);z-index:68;
  opacity:0;pointer-events:none;transition:opacity .2s ease;
}
body.drawer-open .shell-overlay{opacity:1;pointer-events:auto;}

/* ============ 通用组件 ============ */
.eyebrow{
  display:inline-block;font-size:12px;letter-spacing:.06em;color:var(--brand-2);
  font-weight:600;text-transform:uppercase;
}
.btn{
  display:inline-flex;align-items:center;justify-content:center;gap:8px;
  height:48px;padding:0 26px;border-radius:999px;font-size:15px;font-weight:600;
  transition:transform .2s ease,box-shadow .2s ease,filter .2s ease,background .2s ease,border-color .2s ease;
}
.btn-primary{background:var(--grad);color:#fff;}
.btn-primary:hover{transform:translateY(-2px);box-shadow:var(--shadow-pop);filter:brightness(1.06);}
.btn-primary:active{transform:translateY(0);}
.btn-ghost{border:1.5px solid rgba(255,255,255,.28);color:#fff;background:transparent;}
.btn-ghost:hover{background:rgba(255,255,255,.10);transform:translateY(-2px);}
.btn-text{color:var(--brand-2);font-size:14px;font-weight:600;text-decoration:underline;text-underline-offset:3px;}
.btn-text:hover{filter:brightness(1.12);}
.btn-sm{height:36px;padding:0 16px;font-size:13px;}
.btn-gold{background:var(--gold);color:#1A1433;}
.btn-gold:hover{filter:brightness(1.06);transform:translateY(-1px);}

.badge{
  display:inline-flex;align-items:center;gap:6px;padding:5px 12px;border-radius:999px;
  font-size:12px;font-weight:600;letter-spacing:.02em;
}
.badge-gold{background:var(--gold);color:#1A1433;}
.badge-cyan{background:rgba(46,211,160,.16);color:var(--cyan);border:1px solid rgba(46,211,160,.4);}
.badge-orange{background:rgba(255,106,61,.16);color:var(--orange);border:1px solid rgba(255,106,61,.38);}
.badge-dark{background:rgba(11,9,24,.72);color:#fff;}
.badge-light{background:rgba(108,59,255,.10);color:var(--brand-1);border:1px solid rgba(108,59,255,.22);}

.section{padding:88px 0;}
.section-tight{padding:64px 0;}
.section-light{
  background:var(--paper);color:var(--text-strong);
  border-radius:36px;margin:0 24px;
}
.section-head{max-width:720px;margin-bottom:40px;}
.section-head h2{font-size:clamp(24px,3.2vw,34px);font-weight:700;line-height:1.25;margin-top:10px;letter-spacing:-.01em;}
.section-head p{margin-top:14px;font-size:15px;color:rgba(255,255,255,.62);}
.section-light .section-head p{color:var(--text-muted);}
.section-light .eyebrow{color:var(--brand-1);}

.media{position:relative;overflow:hidden;border-radius:var(--r-md);background:var(--ink-800);}
.img-fallback{background:linear-gradient(135deg,#6C3BFF 0%,#FF4D8D 100%);}
.img-fallback::after{
  content:'✦';position:absolute;inset:0;display:flex;align-items:center;justify-content:center;
  font-size:38px;color:rgba(255,255,255,.85);
}
.cover-ratio{aspect-ratio:16/9;}
.shot-ratio{aspect-ratio:9/16;}

/* ============ Hero ============ */
.hero{padding:64px 0 40px;}
.hero-grid{display:grid;grid-template-columns:340px 1fr;gap:56px;align-items:center;}
.hero-shot{
  position:relative;border-radius:var(--r-lg);overflow:hidden;
  box-shadow:0 40px 80px -40px rgba(108,59,255,.7),inset 0 0 0 1px rgba(255,255,255,.14);
  background:var(--ink-800);
}
.hero-shot img{width:100%;height:100%;object-fit:cover;}
.play-btn{
  position:absolute;top:50%;left:50%;transform:translate(-50%,-50%);
  width:64px;height:64px;border-radius:50%;background:var(--grad);
  display:flex;align-items:center;justify-content:center;
  box-shadow:0 18px 40px -14px rgba(255,77,141,.8);
  transition:transform .2s ease;
}
.play-btn:hover{transform:translate(-50%,-50%) scale(1.06);}
.play-btn::after{
  content:'';width:0;height:0;border-left:16px solid #fff;
  border-top:10px solid transparent;border-bottom:10px solid transparent;margin-left:4px;
}
.hero-badge-tl{position:absolute;top:14px;left:14px;}
.hero-duration{
  position:absolute;right:14px;bottom:14px;padding:4px 10px;border-radius:999px;
  background:rgba(11,9,24,.72);font-size:12px;color:#fff;
}
.hero-drag{display:flex;gap:6px;justify-content:center;margin-top:14px;}
.hero-drag i{width:6px;height:6px;border-radius:50%;background:rgba(255,255,255,.28);}
.hero-drag i.on{background:var(--brand-2);width:16px;border-radius:999px;}
.hero-copy h1{
  font-size:clamp(30px,5.6vw,56px);font-weight:800;line-height:1.12;
  letter-spacing:-.02em;margin-top:14px;
}
.hero-copy h1 .hl{
  background:var(--grad);-webkit-background-clip:text;background-clip:text;color:transparent;
}
.hero-sub{margin-top:20px;font-size:17px;color:rgba(255,255,255,.68);max-width:560px;}
.hero-actions{display:flex;flex-wrap:wrap;gap:14px;margin-top:32px;}
.hero-stats{display:flex;flex-wrap:wrap;gap:14px;margin-top:36px;}
.stat{
  padding:14px 20px;border-radius:var(--r-md);
  background:rgba(255,255,255,.05);border:1px solid var(--line-dark);
}
.stat b{display:block;font-size:22px;font-weight:800;color:#fff;line-height:1.2;}
.stat span{font-size:12px;color:rgba(255,255,255,.55);}
.stat.gold b{color:var(--gold);}
.stat.cyan b{color:var(--cyan);}

/* ============ 横滑 rail ============ */
.rail-head{display:flex;align-items:flex-end;justify-content:space-between;gap:20px;margin-bottom:26px;}
.rail-arrows{display:flex;gap:10px;}
.arrow-btn{
  width:42px;height:42px;border-radius:50%;border:1px solid rgba(255,255,255,.18);
  display:flex;align-items:center;justify-content:center;color:#fff;
  transition:background .2s ease,transform .2s ease;
}
.arrow-btn:hover{background:rgba(255,255,255,.12);transform:translateY(-2px);}
.rail{
  display:flex;gap:20px;overflow-x:auto;scroll-snap-type:x mandatory;
  padding-bottom:10px;scrollbar-width:none;
}
.rail::-webkit-scrollbar{display:none;}
.clip-card{
  position:relative;flex:0 0 208px;border-radius:var(--r-md);overflow:hidden;
  scroll-snap-align:start;background:var(--ink-800);
  border:1px solid var(--line-dark);
  transition:transform .25s ease,box-shadow .25s ease;
}
.clip-card:hover{transform:translateY(-4px);box-shadow:var(--shadow-pop);}
.clip-card img{width:100%;height:100%;object-fit:cover;transition:transform .35s ease;}
.clip-card:hover img{transform:scale(1.04);}
.clip-mask{
  position:absolute;inset:auto 0 0 0;height:48%;
  background:linear-gradient(180deg,rgba(11,9,24,0) 0%,rgba(11,9,24,.88) 78%);
}
.clip-body{position:absolute;inset:auto 0 0 0;padding:14px;}
.clip-body h3{font-size:14px;font-weight:600;color:#fff;line-height:1.45;display:-webkit-box;-webkit-line-clamp:2;-webkit-box-orient:vertical;overflow:hidden;}
.clip-meta{display:flex;align-items:center;justify-content:space-between;margin-top:10px;font-size:12px;color:rgba(255,255,255,.72);}
.clip-tag{position:absolute;top:12px;left:12px;}
.rail-hint{display:none;text-align:center;font-size:12px;color:rgba(255,255,255,.42);margin-top:10px;}

/* ============ 种草清单 ============ */
.list-grid{display:grid;grid-template-columns:1fr 1fr;gap:0 40px;}
.list-item{
  display:flex;align-items:center;gap:18px;padding:22px 0;
  border-bottom:1px solid var(--line);
}
.list-no{
  flex:0 0 46px;font-size:26px;font-weight:800;line-height:1;
  color:transparent;-webkit-text-stroke:1px rgba(108,59,255,.5);
  font-variant-numeric:tabular-nums;
}
.list-thumb{flex:0 0 76px;width:76px;height:76px;border-radius:14px;overflow:hidden;}
.list-thumb img{width:100%;height:100%;object-fit:cover;}
.list-main{flex:1;min-width:0;}
.list-main h3{font-size:17px;font-weight:600;color:var(--text-strong);}
.list-main p{font-size:13px;color:var(--text-muted);line-height:1.7;margin-top:4px;
  display:-webkit-box;-webkit-line-clamp:2;-webkit-box-orient:vertical;overflow:hidden;}
.list-price{margin-top:6px;font-size:13px;color:var(--brand-1);font-weight:600;}
.list-cta{flex:0 0 auto;}

/* ============ 口碑条 ============ */
.score-bar{
  display:flex;flex-wrap:wrap;align-items:center;gap:18px;
  padding:20px 24px;border-radius:var(--r-md);
  background:rgba(255,255,255,.05);border:1px solid var(--line-dark);
  margin-bottom:28px;
}
.score-num{font-size:34px;font-weight:800;color:var(--gold);line-height:1;}
.stars{color:var(--cyan);letter-spacing:2px;font-size:14px;}
.review-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:20px;}
.review-card{
  padding:22px;border-radius:var(--r-md);
  background:rgba(255,255,255,.05);border:1px solid var(--line-dark);
  transition:transform .2s ease,border-color .2s ease;
}
.review-card:hover{transform:translateY(-3px);border-color:rgba(108,59,255,.5);}
.review-top{display:flex;align-items:center;gap:12px;}
.avatar{width:40px;height:40px;border-radius:50%;overflow:hidden;flex:0 0 40px;}
.avatar img{width:100%;height:100%;object-fit:cover;}
.review-top b{font-size:14px;display:block;color:#fff;font-weight:600;}
.review-top span{font-size:12px;color:rgba(255,255,255,.45);}
.review-card p{margin-top:14px;font-size:14px;color:rgba(255,255,255,.72);line-height:1.75;
  display:-webkit-box;-webkit-line-clamp:2;-webkit-box-orient:vertical;overflow:hidden;}

/* ============ 资讯列表 ============ */
.news-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:24px;}
.news-card{
  display:flex;flex-direction:column;overflow:hidden;
  background:var(--card);border-radius:var(--r-md);
  border:1px solid var(--line);box-shadow:var(--shadow-card);
  transition:transform .22s ease,box-shadow .22s ease;
}
.news-card:hover{transform:translateY(-4px);box-shadow:0 22px 50px -20px rgba(20,12,60,.3);}
.news-cover{overflow:hidden;aspect-ratio:16/9;background:#EDE9FB;}
.news-cover img{width:100%;height:100%;object-fit:cover;}
.news-body{padding:20px;display:flex;flex-direction:column;flex:1;}
.news-body h3{font-size:17px;font-weight:600;color:var(--text-strong);line-height:1.5;margin-top:12px;
  display:-webkit-box;-webkit-line-clamp:2;-webkit-box-orient:vertical;overflow:hidden;}
.news-body p{margin-top:10px;font-size:14px;color:var(--text-muted);line-height:1.7;
  display:-webkit-box;-webkit-line-clamp:2;-webkit-box-orient:vertical;overflow:hidden;}
.news-foot{margin-top:auto;padding-top:16px;display:flex;align-items:center;justify-content:space-between;font-size:12px;color:var(--text-muted);}
.empty-state{
  grid-column:1/-1;text-align:center;padding:56px 24px;
  border:1px dashed rgba(108,59,255,.3);border-radius:var(--r-md);background:rgba(108,59,255,.03);
}
.empty-icon{font-size:34px;color:var(--brand-1);}
.empty-state p{margin:12px 0 18px;color:var(--text-muted);font-size:14px;}

/* ============ FAQ ============ */
.faq-list{display:flex;flex-direction:column;gap:14px;}
.faq-item{
  border-radius:var(--r-md);border:1px solid var(--line-dark);
  background:rgba(255,255,255,.04);overflow:hidden;
}
.faq-item.open{border-color:rgba(108,59,255,.55);background:rgba(108,59,255,.08);}
.faq-q{
  width:100%;display:flex;align-items:center;justify-content:space-between;gap:16px;
  padding:20px 22px;text-align:left;font-size:17px;font-weight:600;color:#fff;
}
.faq-icon{
  flex:0 0 24px;width:24px;height:24px;border-radius:50%;
  display:flex;align-items:center;justify-content:center;
  background:rgba(255,255,255,.1);font-size:15px;line-height:1;
  transition:transform .2s ease,background .2s ease;
}
.faq-item.open .faq-icon{transform:rotate(45deg);background:var(--grad);}
.faq-a{max-height:0;overflow:hidden;transition:max-height .25s ease;}
.faq-item.open .faq-a{max-height:320px;}
.faq-a p{padding:0 22px 22px;font-size:15px;color:rgba(255,255,255,.7);line-height:1.8;}

/* ============ CTA ============ */
.cta-card{
  position:relative;overflow:hidden;border-radius:var(--r-lg);
  padding:56px;background:var(--grad);
  display:grid;grid-template-columns:1.4fr 1fr;gap:36px;align-items:center;
}
.cta-card::after{
  content:'';position:absolute;right:-80px;top:-80px;width:320px;height:320px;border-radius:50%;
  background:radial-gradient(circle,rgba(255,255,255,.28),transparent 70%);
}
.cta-card h2{font-size:clamp(24px,3.2vw,34px);font-weight:800;color:#fff;line-height:1.25;position:relative;}
.cta-card p{margin-top:14px;font-size:15px;color:rgba(255,255,255,.86);position:relative;}
.cta-actions{display:flex;flex-wrap:wrap;gap:14px;position:relative;justify-content:flex-end;}
.cta-actions .btn-ghost{border-color:rgba(255,255,255,.6);}

/* ============ 页脚 ============ */
.site-footer{
  margin-top:40px;background:var(--ink-900);
  border-top:1px solid transparent;
  background-image:linear-gradient(var(--ink-900),var(--ink-900)),var(--grad);
  background-origin:border-box;background-clip:padding-box,border-box;
  padding:56px 0 32px;
}
.footer-grid{display:grid;grid-template-columns:1.6fr 1fr 1fr 1.2fr;gap:32px;}
.footer-brand{display:flex;align-items:center;gap:12px;margin-bottom:16px;}
.footer-grid h4{font-size:14px;font-weight:700;color:#fff;margin-bottom:16px;}
.footer-grid li{margin-bottom:10px;}
.footer-grid a{font-size:14px;color:rgba(255,255,255,.6);transition:color .2s ease;}
.footer-grid a:hover{color:var(--brand-2);}
.footer-about{font-size:13px;color:rgba(255,255,255,.5);line-height:1.8;max-width:320px;}
.footer-contact p{font-size:13px;color:rgba(255,255,255,.6);margin-bottom:10px;}
.footer-bottom{
  margin-top:40px;padding-top:22px;border-top:1px solid var(--line-dark);
  display:flex;flex-wrap:wrap;gap:12px;justify-content:space-between;
  font-size:12px;color:rgba(255,255,255,.42);
}

/* ============ 移动端底栏 ============ */
.mobile-bar{
  display:none;position:fixed;left:0;right:0;bottom:0;z-index:66;
  padding:12px 16px;background:rgba(11,9,24,.94);
  border-top:1px solid var(--line-dark);
  backdrop-filter:blur(8px);
}
.mobile-bar .btn{width:100%;}

/* ============ 响应式 ============ */
@media (max-width:1279px){
  .hero-grid{grid-template-columns:280px 1fr;gap:40px;}
  .news-grid{grid-template-columns:repeat(2,1fr);}
  .review-grid{grid-template-columns:repeat(2,1fr);}
  .clip-card{flex:0 0 186px;}
}
@media (max-width:1023px){
  .shell-side{width:280px;transform:translateX(-100%);box-shadow:0 0 60px rgba(0,0,0,.6);}
  body.drawer-open .shell-side{transform:translateX(0);}
  body.nav-collapsed .shell-side{width:280px;}
  .shell-main,body.nav-collapsed .shell-main{margin-left:0;}
  body.nav-collapsed .nav-label{display:block;}
  body.nav-collapsed .brand-text{display:block;}
  body.nav-collapsed .nav-item{justify-content:flex-start;padding:0 14px;}
  body.nav-collapsed .side-cta span{display:inline;}
  body.nav-collapsed .side-contact{display:block;}
  body.nav-collapsed .side-collapse{display:none;}
  .side-collapse{display:none;}
  .topbar{display:flex;}
  .container{padding:0 20px;}
  .hero{padding:36px 0 24px;}
  .hero-grid{grid-template-columns:1fr;gap:32px;}
  .hero-shot{max-width:300px;margin:0 auto;}
  .hero-copy{text-align:left;}
  .hero-stats{gap:10px;}
  .stat{flex:1 1 30%;padding:12px 14px;}
  .section{padding:56px 0;}
  .section-light{margin:0 12px;border-radius:26px;}
  .list-grid{grid-template-columns:1fr;gap:0;}
  .review-grid{grid-template-columns:1fr;}
  .news-grid{grid-template-columns:1fr;}
  .cta-card{grid-template-columns:1fr;padding:32px;}
  .cta-actions{justify-content:flex-start;}
  .footer-grid{grid-template-columns:1fr 1fr;gap:26px;}
  .rail-hint{display:block;}
  .rail-arrows{display:none;}
  .mobile-bar{display:block;}
  .shell-main{padding-bottom:76px;}
}
@media (max-width:520px){
  .container{padding:0 16px;}
  .hero-actions .btn{flex:1 1 100%;}
  .section{padding:48px 0;}
  .stat{flex:1 1 100%;}
  .list-item{gap:12px;}
  .list-thumb{flex:0 0 62px;width:62px;height:62px;}
  .footer-grid{grid-template-columns:1fr;}
  .cta-card{padding:24px;}
  .clip-card{flex:0 0 62%;}
}

/* roulang page: article */
:root{
  --brand-1:#6C3BFF;
  --brand-2:#FF4D8D;
  --accent-gold:#FFC24B;
  --accent-cyan:#2ED3A0;
  --accent-orange:#FF6A3D;
  --ink-900:#0B0918;
  --ink-800:#171233;
  --paper:#F7F5FF;
  --card:#FFFFFF;
  --text-strong:#1A1433;
  --text-muted:#6B6486;
  --line:rgba(26,20,51,.10);
  --grad:linear-gradient(135deg,#6C3BFF 0%,#FF4D8D 100%);
  --shadow-card:0 12px 32px -12px rgba(20,12,60,.18),0 2px 6px rgba(20,12,60,.06);
  --shadow-pop:0 24px 60px -20px rgba(108,59,255,.35);
  --side-w:248px;
  --radius-lg:28px;
  --radius-md:20px;
  --radius-sm:12px;
}
*,*::before,*::after{box-sizing:border-box}
html{-webkit-text-size-adjust:100%;scroll-behavior:smooth}
body{
  margin:0;
  font-family:-apple-system,"PingFang SC","Microsoft YaHei","Source Han Sans SC",sans-serif;
  background:var(--paper);
  color:var(--text-strong);
  font-size:15px;
  line-height:1.78;
  -webkit-font-smoothing:antialiased;
}
img{max-width:100%;display:block}
a{color:inherit;text-decoration:none}
button{font:inherit;cursor:pointer;border:0;background:none;color:inherit}
ul,ol{margin:0;padding:0}
:focus-visible{outline:3px solid rgba(255,194,75,.95);outline-offset:2px;border-radius:8px}
body.nav-collapsed{--side-w:88px}
.starry{
  background-image:
    radial-gradient(rgba(255,255,255,.09) 1px,transparent 1px),
    radial-gradient(rgba(255,255,255,.05) 1px,transparent 1px),
    radial-gradient(680px 420px at 100% 0%,rgba(108,59,255,.30),transparent 62%);
  background-size:38px 38px,74px 74px,100% 100%;
  background-position:0 0,14px 20px,0 0;
}
.container{width:100%;max-width:1200px;margin:0 auto;padding:0 32px}

/* ============ 左侧 App Shell 导航 ============ */
.side-nav-wrap{
  position:fixed;top:0;right:auto;bottom:0;left:0;
  width:var(--side-w);
  z-index:60;
  display:flex;flex-direction:column;gap:16px;
  padding:22px 16px 20px;
  background:#171233;
  border-right:1px solid rgba(255,255,255,.07);
  overflow-y:auto;
  transition:width .24s ease,transform .28s ease;
}
.brand-block{display:flex;align-items:center;gap:12px;padding:4px 6px 16px;border-bottom:1px solid rgba(255,255,255,.08)}
.brand-mark{
  width:38px;height:38px;flex:0 0 38px;border-radius:12px;
  background:var(--grad);color:#fff;display:grid;place-items:center;
  font-weight:800;font-size:17px;letter-spacing:.5px;
  box-shadow:0 10px 22px -10px rgba(108,59,255,.95);
}
.brand-mark.sm{width:30px;height:30px;flex:0 0 30px;border-radius:10px;font-size:14px}
.brand-text strong{display:block;font-size:14.5px;font-weight:700;color:#fff;white-space:nowrap;letter-spacing:.2px}
.brand-text span{display:block;font-size:11.5px;color:rgba(255,255,255,.48);white-space:nowrap;margin-top:2px}
.collapse-btn{
  align-self:flex-end;width:30px;height:30px;border-radius:10px;
  background:rgba(255,255,255,.07);color:rgba(255,255,255,.7);
  font-size:14px;line-height:1;display:grid;place-items:center;transition:.2s;
}
.collapse-btn:hover{background:rgba(255,255,255,.14);color:#fff}
.side-nav{display:flex;flex-direction:column;gap:6px}
.nav-item{
  position:relative;display:flex;align-items:center;gap:12px;
  height:48px;padding:0 14px;border-radius:14px;
  color:rgba(255,255,255,.72);font-size:15px;font-weight:500;
  transition:background .2s ease,color .2s ease,transform .2s ease;
}
.nav-item svg{flex:0 0 20px}
.nav-item:hover{background:rgba(255,255,255,.07);color:#fff;transform:translateX(2px)}
.nav-item.active{color:#fff;font-weight:600;background:linear-gradient(90deg,rgba(108,59,255,.34),rgba(255,77,141,.14))}
.nav-item.active::before{
  content:"";position:absolute;left:0;top:12px;bottom:12px;width:3px;
  border-radius:0 3px 3px 0;background:linear-gradient(180deg,#6C3BFF,#FF4D8D);
}
.side-foot{margin-top:auto;padding-top:18px;border-top:1px solid rgba(255,255,255,.08);display:flex;flex-direction:column;gap:10px}
.side-tip{font-size:12px;color:rgba(255,255,255,.44);margin:0;line-height:1.6}
body.nav-collapsed .brand-text,
body.nav-collapsed .nav-label,
body.nav-collapsed .side-foot{display:none}
body.nav-collapsed .brand-block{justify-content:center;padding-left:0;padding-right:0}
body.nav-collapsed .nav-item{justify-content:center;padding:0}
body.nav-collapsed .collapse-btn{align-self:center}

/* ============ 顶部栏 & 抽屉（<1024px） ============ */
.topbar{
  display:none;position:fixed;top:0;left:0;right:0;height:60px;z-index:70;
  padding:0 16px;align-items:center;justify-content:space-between;gap:12px;
  background:rgba(23,18,51,.97);color:#fff;
  border-bottom:1px solid rgba(255,255,255,.08);
  transition:box-shadow .25s ease;
}
.topbar.scrolled{box-shadow:0 12px 28px -14px rgba(0,0,0,.75)}
.topbar-logo{display:flex;align-items:center;gap:9px;font-size:14.5px;font-weight:700;white-space:nowrap}
.topbar-page{font-size:12.5px;color:rgba(255,255,255,.55);white-space:nowrap;overflow:hidden;text-overflow:ellipsis}
.topbar-btn{
  width:38px;height:38px;flex:0 0 38px;border-radius:12px;
  background:rgba(255,255,255,.08);display:grid;place-items:center;transition:.2s;
}
.topbar-btn:hover{background:rgba(255,255,255,.16)}
.drawer-mask{position:fixed;inset:0;background:rgba(11,9,24,.62);opacity:0;pointer-events:none;transition:opacity .25s ease;z-index:55}

/* ============ 主区域 ============ */
.main{margin-left:var(--side-w);min-height:100vh;transition:margin-left .24s ease}
.site-footer{margin-left:var(--side-w);transition:margin-left .24s ease}

@media (max-width:1023px){
  .side-nav-wrap{width:280px;transform:translateX(-100%)}
  body.drawer-open .side-nav-wrap{transform:translateX(0)}
  body.drawer-open .drawer-mask{opacity:1;pointer-events:auto}
  body.drawer-open{overflow:hidden}
  .topbar{display:flex}
  .main,.site-footer{margin-left:0}
  .main{padding-top:60px}
  .collapse-btn{display:none}
}
@media (min-width:1024px){
  .drawer-mask{display:none}
}
@media (max-width:640px){
  .container{padding:0 18px}
}

/* ============ 按钮 / 标签 ============ */
.btn{
  display:inline-flex;align-items:center;justify-content:center;gap:8px;
  height:44px;padding:0 20px;border-radius:999px;
  font-size:14.5px;font-weight:600;white-space:nowrap;
  transition:transform .2s ease,box-shadow .2s ease,background .2s ease,color .2s ease,border-color .2s ease,filter .2s ease;
}
.btn-primary{background:var(--grad);color:#fff;box-shadow:0 12px 26px -14px rgba(108,59,255,.95)}
.btn-primary:hover{transform:translateY(-2px);box-shadow:var(--shadow-pop);filter:brightness(1.06)}
.btn-primary:active{transform:translateY(0)}
.btn-ghost{background:transparent;border:1.5px solid var(--line);color:var(--text-strong)}
.btn-ghost:hover{background:#fff;border-color:rgba(108,59,255,.42);color:var(--brand-1)}
.btn-gold{background:var(--accent-gold);color:#3A2700;box-shadow:0 10px 22px -14px rgba(255,194,75,1)}
.btn-gold:hover{transform:translateY(-1px);filter:brightness(1.06)}
.btn-sm{height:36px;padding:0 14px;font-size:13px}
.btn-block{width:100%}
.chip-brand{
  display:inline-flex;align-items:center;gap:6px;padding:5px 13px;border-radius:999px;
  font-size:12.5px;font-weight:600;letter-spacing:.02em;color:#fff;background:var(--grad);
}
.tag{
  display:inline-flex;align-items:center;padding:5px 11px;border-radius:999px;
  background:var(--paper);border:1px solid var(--line);font-size:12.5px;color:var(--text-muted);
  transition:.18s ease;
}
.tag:hover{color:var(--brand-1);border-color:rgba(108,59,255,.42);background:#fff}

/* ============ 文章骨架 ============ */
.article-wrap{padding-top:28px;padding-bottom:76px}
.crumbs{display:flex;flex-wrap:wrap;align-items:center;gap:8px;font-size:13px;color:var(--text-muted);margin-bottom:22px}
.crumbs a{transition:color .18s ease}
.crumbs a:hover{color:var(--brand-1)}
.crumb-sep{opacity:.45}
.crumb-current{max-width:230px;overflow:hidden;text-overflow:ellipsis;white-space:nowrap;color:var(--text-strong);font-weight:500}

.article-layout{display:grid;grid-template-columns:minmax(0,1fr);gap:40px;align-items:start}
@media (min-width:1280px){
  .article-layout{grid-template-columns:minmax(0,1fr) 320px}
}

.article-head{padding-bottom:26px;border-bottom:1px solid var(--line);margin-bottom:30px}
.article-title{
  font-size:clamp(28px,4.4vw,44px);line-height:1.2;font-weight:800;letter-spacing:-.02em;
  margin:16px 0 16px;color:var(--text-strong);
}
.meta-row{display:flex;flex-wrap:wrap;gap:8px 20px;font-size:13.5px;color:var(--text-muted);font-variant-numeric:tabular-nums}
.meta-row span{display:inline-flex;align-items:center;gap:6px}
.meta-row span::before{content:"";width:5px;height:5px;border-radius:50%;background:rgba(108,59,255,.55)}
.action-row{display:flex;flex-wrap:wrap;gap:10px;margin-top:20px}
.cover-figure{
  margin:26px 0 0;border-radius:24px;overflow:hidden;position:relative;
  background:var(--grad);box-shadow:var(--shadow-card);
}
.cover-figure img{width:100%;aspect-ratio:16/9;object-fit:cover}

/* ============ 正文阅读区 ============ */
.article-body{
  max-width:768px;margin:0 auto;font-size:16px;line-height:1.9;color:#241D42;
  word-wrap:break-word;overflow-wrap:break-word;
}
.article-body > *:first-child{margin-top:0}
.article-body p{margin:0 0 1.2em}
.article-body h2{
  position:relative;font-size:clamp(20px,2.6vw,26px);font-weight:700;line-height:1.35;
  margin:40px 0 16px;padding-left:18px;letter-spacing:-.01em;
}
.article-body h2::before{
  content:"";position:absolute;left:0;top:.16em;bottom:.16em;width:4px;border-radius:999px;
  background:linear-gradient(180deg,#6C3BFF,#FF4D8D);
}
.article-body h3{font-size:19px;font-weight:600;margin:28px 0 12px;line-height:1.45}
.article-body h4{font-size:16.5px;font-weight:600;margin:22px 0 10px}
.article-body ul,.article-body ol{margin:0 0 1.2em;padding-left:1.5em}
.article-body ul{list-style:none;padding-left:1.4em}
.article-body ul li{position:relative;margin-bottom:.5em}
.article-body ul li::before{
  content:"";position:absolute;left:-1.15em;top:.78em;width:6px;height:6px;border-radius:50%;
  background:var(--brand-1);
}
.article-body ol li{margin-bottom:.5em}
.article-body ol li::marker{color:var(--brand-1);font-weight:700}
.article-body a{color:var(--brand-1);text-decoration:underline;text-underline-offset:3px}
.article-body a:hover{color:var(--brand-2)}
.article-body strong{font-weight:700;color:#1A1433}
.article-body img{border-radius:16px;margin:22px auto;box-shadow:var(--shadow-card)}
.article-body figure{margin:22px 0}
.article-body figcaption{font-size:13px;text-align:center;color:var(--text-muted);margin-top:10px}
.article-body blockquote{
  position:relative;margin:24px 0;padding:16px 22px 16px 24px;
  background:var(--paper);border-radius:0 16px 16px 0;color:#4A4270;
}
.article-body blockquote::before{
  content:"";position:absolute;left:0;top:0;bottom:0;width:4px;border-radius:4px;
  background:linear-gradient(180deg,#6C3BFF,#FF4D8D);
}
.article-body blockquote p:last-child{margin-bottom:0}
.article-body table{
  width:100%;border-collapse:collapse;margin:24px 0;font-size:14px;
  border:1px solid var(--line);background:#fff;border-radius:14px;overflow:hidden;
  font-variant-numeric:tabular-nums;
}
.article-body th,.article-body td{padding:11px 14px;text-align:left;border-bottom:1px solid var(--line)}
.article-body thead th{background:var(--paper);font-weight:600;color:var(--text-strong)}
.article-body tbody tr:nth-child(even){background:#FBFAFF}
.article-body tbody tr:last-child td{border-bottom:0}
.article-body pre{
  background:var(--ink-900);color:#E7E3FF;padding:18px 20px;border-radius:16px;
  overflow-x:auto;font-size:13.5px;line-height:1.7;margin:22px 0;
}
.article-body code{font-family:ui-monospace,SFMono-Regular,Menlo,Consolas,monospace;font-size:.92em}
.article-body p code,.article-body li code{background:#EFEBFF;color:#5B34D6;padding:2px 6px;border-radius:6px}
.article-body hr{border:0;height:1px;background:var(--line);margin:32px 0}

.empty-state{
  max-width:768px;margin:8px auto 0;padding:52px 26px;background:#fff;
  border:1px dashed rgba(108,59,255,.35);border-radius:24px;text-align:center;
}
.empty-star{
  width:64px;height:64px;margin:0 auto 18px;border-radius:20px;background:var(--grad);
  display:grid;place-items:center;color:#fff;font-size:26px;box-shadow:var(--shadow-pop);
}
.empty-title{font-size:20px;font-weight:700;margin:0 0 10px;color:var(--text-strong)}
.empty-text{margin:0 0 22px;color:var(--text-muted);font-size:14.5px}
.empty-actions{display:flex;gap:12px;justify-content:center;flex-wrap:wrap}

/* ============ 文末组件 ============ */
.pager{display:grid;grid-template-columns:1fr 1fr;gap:16px;max-width:768px;margin:44px auto 0}
.pager-card{
  display:block;background:#fff;border:1px solid var(--line);border-radius:18px;padding:16px 18px;
  transition:transform .2s ease,box-shadow .2s ease,border-color .2s ease;box-shadow:var(--shadow-card);
}
.pager-card:hover{transform:translateY(-2px);box-shadow:var(--shadow-pop);border-color:rgba(108,59,255,.35)}
.pager-card span{display:block;font-size:12px;color:var(--text-muted);margin-bottom:6px;letter-spacing:.04em}
.pager-card strong{display:block;font-size:14.5px;font-weight:600;line-height:1.55}
.pager-card.next{text-align:right}
@media (max-width:640px){
  .pager{grid-template-columns:1fr}
  .pager-card.next{text-align:left}
}

.related{max-width:768px;margin:52px auto 0}
.section-head{display:flex;align-items:flex-end;justify-content:space-between;gap:16px;margin-bottom:18px}
.section-head h2{font-size:21px;font-weight:700;margin:0;letter-spacing:-.01em}
.section-head p{margin:6px 0 0;font-size:13.5px;color:var(--text-muted)}
.link-more{font-size:13.5px;font-weight:600;color:var(--brand-1);text-decoration:underline;text-underline-offset:3px}
.link-more:hover{color:var(--brand-2)}
.related-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:18px}
@media (max-width:900px){.related-grid{grid-template-columns:repeat(2,1fr)}}
@media (max-width:640px){.related-grid{grid-template-columns:1fr}}
.post-card{
  display:block;background:#fff;border:1px solid var(--line);border-radius:20px;overflow:hidden;
  box-shadow:var(--shadow-card);transition:transform .22s ease,box-shadow .22s ease;
}
.post-card:hover{transform:translateY(-3px);box-shadow:var(--shadow-pop)}
.post-thumb{aspect-ratio:16/9;overflow:hidden;background:var(--grad)}
.post-thumb img{width:100%;height:100%;object-fit:cover;transition:transform .45s ease}
.post-card:hover .post-thumb img{transform:scale(1.05)}
.post-body{padding:14px 16px 16px}
.post-body h3{
  font-size:15.5px;font-weight:600;line-height:1.5;margin:0 0 10px;
  display:-webkit-box;-webkit-line-clamp:2;-webkit-box-orient:vertical;overflow:hidden;
}
.post-meta{font-size:12px;color:var(--text-muted);font-variant-numeric:tabular-nums;display:flex;gap:12px;flex-wrap:wrap}
.back-cat{display:flex;justify-content:center;margin:34px auto 0;max-width:768px}

/* ============ 右侧 sticky 侧栏 ============ */
.article-side{display:none}
@media (min-width:1280px){
  .article-side{display:flex;flex-direction:column;gap:20px;position:sticky;top:24px}
}
.side-card{
  background:#fff;border:1px solid var(--line);border-radius:20px;padding:20px;box-shadow:var(--shadow-card);
}
.side-card h3{
  font-size:15px;font-weight:700;margin:0 0 14px;display:flex;align-items:center;gap:8px;color:var(--text-strong);
}
.side-card h3::before{content:"";width:4px;height:15px;border-radius:999px;background:var(--grad)}
.toc-list{list-style:none;margin:0;padding:0;display:flex;flex-direction:column;gap:2px;max-height:330px;overflow:auto}
.toc-list a{
  display:block;font-size:13.5px;color:var(--text-muted);padding:7px 10px;border-radius:10px;
  border-left:2px solid transparent;line-height:1.5;transition:.18s ease;
}
.toc-list a:hover{color:var(--brand-1);background:var(--paper)}
.toc-list a.active{color:var(--brand-1);font-weight:600;background:var(--paper);border-left-color:var(--brand-1)}
.toc-empty{font-size:13px;color:var(--text-muted);margin:0}
.tag-list{display:flex;flex-wrap:wrap;gap:8px}
.side-card.dark{
  background:#171233;border-color:rgba(255,255,255,.09);color:#fff;
  background-image:radial-gradient(rgba(255,255,255,.07) 1px,transparent 1px);
  background-size:32px 32px;
}
.side-card.dark h3{color:#fff}
.side-card.dark p{font-size:13.5px;color:rgba(255,255,255,.66);margin:0 0 16px;line-height:1.8}
.side-card.dark .num{font-size:26px;font-weight:800;color:var(--accent-gold);font-variant-numeric:tabular-nums;display:block;line-height:1.2}
.side-card.dark .num-label{font-size:12px;color:rgba(255,255,255,.5);display:block;margin-top:2px;margin-bottom:16px}

/* ============ 页脚 ============ */
.site-footer{
  position:relative;background:var(--ink-900);color:rgba(255,255,255,.72);
  padding:56px 0 26px;
  background-image:
    radial-gradient(rgba(255,255,255,.06) 1px,transparent 1px),
    radial-gradient(700px 340px at 12% 0%,rgba(108,59,255,.28),transparent 66%);
  background-size:40px 40px,100% 100%;
}
.site-footer::before{
  content:"";position:absolute;top:0;left:0;right:0;height:1px;
  background:linear-gradient(90deg,#6C3BFF,#FF4D8D 42%,transparent);
}
.footer-grid{display:grid;grid-template-columns:1.6fr 1fr 1fr 1.3fr;gap:32px}
.footer-brand{display:flex;align-items:center;gap:10px;margin-bottom:14px}
.footer-about{font-size:13.5px;line-height:1.85;color:rgba(255,255,255,.6);margin:0;max-width:350px}
.site-footer h4{font-size:14px;color:#fff;margin:0 0 14px;font-weight:600}
.site-footer ul{list-style:none;display:flex;flex-direction:column;gap:9px}
.site-footer ul a{font-size:13.5px;color:rgba(255,255,255,.64);transition:color .18s ease}
.site-footer ul a:hover{color:#fff}
.footer-contact p{font-size:13.5px;color:rgba(255,255,255,.6);margin:0 0 9px}
.footer-bottom{
  display:flex;justify-content:space-between;flex-wrap:wrap;gap:10px;margin-top:42px;padding-top:20px;
  border-top:1px solid rgba(255,255,255,.08);font-size:12.5px;color:rgba(255,255,255,.45);
}
@media (max-width:900px){
  .footer-grid{grid-template-columns:1fr 1fr}
}
@media (max-width:520px){
  .footer-grid{grid-template-columns:1fr}
  .footer-bottom{flex-direction:column}
}

/* roulang page: category1 */
:root{
    --brand-1:#6C3BFF;
    --brand-2:#FF4D8D;
    --accent-gold:#FFC24B;
    --accent-cyan:#2ED3A0;
    --accent-orange:#FF6A3D;
    --ink-900:#0B0918;
    --ink-800:#171233;
    --paper:#F7F5FF;
    --card:#FFFFFF;
    --text-strong:#1A1433;
    --text-muted:#6B6486;
    --line:rgba(26,20,51,.10);
    --shadow-card:0 12px 32px -12px rgba(20,12,60,.18),0 2px 6px rgba(20,12,60,.06);
    --shadow-pop:0 24px 60px -20px rgba(108,59,255,.35);
    --r-lg:28px;
    --r-md:20px;
    --r-sm:12px;
    --nav-w:248px;
    --font-cn:-apple-system,BlinkMacSystemFont,"PingFang SC","Microsoft YaHei","Source Han Sans SC","Hiragino Sans GB",sans-serif;
  }
  *,*::before,*::after{box-sizing:border-box}
  html{-webkit-text-size-adjust:100%;scroll-behavior:smooth}
  body{
    margin:0;
    font-family:var(--font-cn);
    font-size:16px;
    line-height:1.85;
    color:var(--text-strong);
    background:var(--paper);
    overflow-x:hidden;
  }
  img{max-width:100%;display:block}
  a{color:inherit;text-decoration:none}
  ul{list-style:none;margin:0;padding:0}
  h1,h2,h3,h4,p{margin:0}
  button{font:inherit;color:inherit;background:none;border:0;cursor:pointer}
  input{font:inherit}
  :focus-visible{outline:3px solid rgba(255,194,75,.9);outline-offset:2px;border-radius:8px}
  .num{font-variant-numeric:tabular-nums}

  /* ============ 左侧 App Shell ============ */
  .sidebar{
    position:fixed;top:0;left:0;width:var(--nav-w);height:100vh;
    display:flex;flex-direction:column;
    background:var(--ink-900);
    border-right:1px solid rgba(255,255,255,.06);
    z-index:60;
  }
  .sidebar-brand{
    display:flex;align-items:center;gap:12px;
    padding:24px 22px 20px;
  }
  .brand-mark{
    flex:0 0 auto;width:38px;height:38px;border-radius:12px;
    display:flex;align-items:center;justify-content:center;
    background:linear-gradient(135deg,var(--brand-1),var(--brand-2));
    color:#fff;font-size:17px;font-weight:800;letter-spacing:-.02em;
    box-shadow:0 10px 24px -10px rgba(108,59,255,.85);
  }
  .brand-text{display:flex;flex-direction:column;line-height:1.35;min-width:0}
  .brand-text strong{font-size:15px;font-weight:700;color:#fff;letter-spacing:-.01em;white-space:nowrap}
  .brand-text small{font-size:11px;color:rgba(255,255,255,.45);letter-spacing:.06em;white-space:nowrap}
  .side-nav{padding:8px 12px;display:flex;flex-direction:column;gap:4px;flex:1 1 auto;overflow-y:auto}
  .nav-item{
    position:relative;display:flex;align-items:center;gap:12px;
    height:48px;padding:0 14px;border-radius:12px;
    color:rgba(255,255,255,.66);font-size:15px;font-weight:500;
    transition:background .2s ease,color .2s ease,transform .2s ease;
  }
  .nav-item svg{flex:0 0 auto;opacity:.85}
  .nav-item:hover{background:rgba(255,255,255,.06);color:#fff;transform:translateX(2px)}
  .nav-item.active{
    background:linear-gradient(90deg,rgba(108,59,255,.30),rgba(255,77,141,.10));
    color:#fff;font-weight:600;
  }
  .nav-item.active::before{
    content:"";position:absolute;left:0;top:10px;bottom:10px;width:3px;border-radius:0 3px 3px 0;
    background:linear-gradient(180deg,var(--brand-1),var(--brand-2));
  }
  .sidebar-foot{padding:18px 20px 24px;border-top:1px solid rgba(255,255,255,.07)}
  .sidebar-note{font-size:12px;color:rgba(255,255,255,.42);line-height:1.9}

  /* ============ 按钮 ============ */
  .btn{
    display:inline-flex;align-items:center;justify-content:center;gap:8px;
    height:48px;padding:0 26px;border-radius:999px;
    font-size:15px;font-weight:600;white-space:nowrap;
    transition:transform .2s ease,box-shadow .2s ease,filter .2s ease,background .2s ease,border-color .2s ease,color .2s ease;
  }
  .btn-primary{background:linear-gradient(135deg,var(--brand-1),var(--brand-2));color:#fff;box-shadow:0 12px 26px -14px rgba(108,59,255,.9)}
  .btn-primary:hover{filter:brightness(1.06);transform:translateY(-2px);box-shadow:var(--shadow-pop)}
  .btn-primary:active{transform:translateY(0)}
  .btn-ghost{border:1.5px solid rgba(255,255,255,.34);color:#fff;background:transparent}
  .btn-ghost:hover{background:rgba(255,255,255,.12);transform:translateY(-2px)}
  .btn-outline{border:1.5px solid var(--brand-1);color:var(--brand-1);background:transparent}
  .btn-outline:hover{background:rgba(108,59,255,.08);transform:translateY(-2px)}
  .btn-block{width:100%;height:44px;font-size:14px}
  .btn-buy{
    height:32px;padding:0 14px;border-radius:999px;
    background:var(--accent-gold);color:#2A1B00;
    font-size:13px;font-weight:700;display:inline-flex;align-items:center;
    transition:transform .18s ease,filter .18s ease,box-shadow .18s ease;
  }
  .btn-buy:hover{filter:brightness(1.07);transform:translateY(-1px);box-shadow:0 8px 18px -10px rgba(255,194,75,.95)}
  .link-more{color:var(--brand-1);font-size:14px;font-weight:600;text-decoration:underline;text-underline-offset:4px}
  .link-more:hover{color:var(--brand-2)}

  /* ============ 移动顶栏 ============ */
  .topbar{display:none}
  .drawer-mask{position:fixed;inset:0;background:rgba(11,9,24,.62);opacity:0;visibility:hidden;transition:opacity .25s ease,visibility .25s ease;z-index:55}

  .main-wrap{margin-left:var(--nav-w);min-height:100vh;background:var(--paper)}
  .container{width:100%;max-width:1200px;margin:0 auto;padding:0 32px}

  /* ============ Hero ============ */
  .hero{
    position:relative;overflow:hidden;
    background-color:var(--ink-900);
    background-image:
      radial-gradient(1.6px 1.6px at 12% 22%,rgba(255,255,255,.10),transparent 60%),
      radial-gradient(1.6px 1.6px at 38% 68%,rgba(255,255,255,.08),transparent 60%),
      radial-gradient(1.6px 1.6px at 72% 18%,rgba(255,255,255,.09),transparent 60%),
      radial-gradient(1.6px 1.6px at 88% 74%,rgba(255,255,255,.07),transparent 60%),
      radial-gradient(1.6px 1.6px at 56% 40%,rgba(255,255,255,.06),transparent 60%);
  }
  .hero::after{
    content:"";position:absolute;inset:0;pointer-events:none;
    background:
      radial-gradient(560px 360px at 78% 12%,rgba(108,59,255,.34),transparent 70%),
      radial-gradient(520px 340px at 8% 92%,rgba(255,77,141,.22),transparent 70%);
  }
  .hero-inner{
    position:relative;z-index:2;
    display:grid;grid-template-columns:1.35fr .82fr;gap:56px;align-items:center;
    padding:64px 0 72px;
  }
  .back-link{
    display:inline-flex;align-items:center;gap:6px;
    font-size:13px;color:rgba(255,255,255,.6);margin-bottom:20px;
    transition:color .2s ease,transform .2s ease;
  }
  .back-link:hover{color:#fff;transform:translateX(-3px)}
  .eyebrow{font-size:12px;font-weight:700;letter-spacing:.06em;color:var(--accent-gold);margin-bottom:12px}
  .hero h1{
    font-size:clamp(30px,5.6vw,56px);font-weight:800;line-height:1.12;letter-spacing:-.02em;color:#fff;
  }
  .hero h1 .grad{background:linear-gradient(135deg,#B49BFF,#FF8FB8);-webkit-background-clip:text;background-clip:text;color:transparent}
  .hero-sub{margin-top:18px;font-size:16px;line-height:1.85;color:rgba(255,255,255,.72);max-width:520px}
  .hero-actions{display:flex;flex-wrap:wrap;gap:14px;margin-top:30px}
  .stats{display:flex;flex-wrap:wrap;gap:14px;margin-top:36px}
  .stat{
    min-width:118px;padding:12px 16px;border-radius:14px;
    background:rgba(255,255,255,.06);
    border:1px solid rgba(255,255,255,.10);
  }
  .stat b{display:block;font-size:20px;font-weight:800;color:var(--accent-gold);letter-spacing:-.01em}
  .stat span{font-size:12px;color:rgba(255,255,255,.55)}

  .hero-media{position:relative;border-radius:var(--r-lg);overflow:hidden;aspect-ratio:9/16;max-width:340px;margin-left:auto;box-shadow:0 30px 70px -30px rgba(0,0,0,.85);border:1px solid rgba(255,255,255,.14)}
  .hero-media img{width:100%;height:100%;object-fit:cover}
  .hero-media::after{content:"";position:absolute;inset:0;background:linear-gradient(180deg,rgba(11,9,24,.05) 40%,rgba(11,9,24,.72) 100%)}
  .play-btn{
    position:absolute;left:50%;top:50%;transform:translate(-50%,-50%);
    width:64px;height:64px;border-radius:50%;
    display:flex;align-items:center;justify-content:center;
    background:linear-gradient(135deg,var(--brand-1),var(--brand-2));
    color:#fff;z-index:3;box-shadow:0 18px 40px -16px rgba(108,59,255,.95);
    transition:transform .22s ease,filter .22s ease;
  }
  .play-btn:hover{transform:translate(-50%,-50%) scale(1.07);filter:brightness(1.08)}
  .badge-hot{
    position:absolute;top:14px;left:14px;z-index:3;
    padding:6px 12px;border-radius:999px;
    background:var(--accent-gold);color:#2A1B00;font-size:12px;font-weight:800;
  }
  .badge-dur{
    position:absolute;right:14px;bottom:14px;z-index:3;
    padding:5px 11px;border-radius:999px;
    background:rgba(11,9,24,.68);color:#fff;font-size:12px;font-weight:600;
  }
  .badge-eye{
    position:absolute;left:14px;bottom:14px;z-index:3;
    padding:5px 11px;border-radius:999px;
    background:rgba(46,211,160,.18);border:1px solid rgba(46,211,160,.5);
    color:#B8F5E0;font-size:12px;font-weight:600;
  }

  /* ============ 板块 ============ */
  .section{padding:56px 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:clamp(24px,3.2vw,34px);font-weight:700;line-height:1.25;letter-spacing:-.01em}
  .section-head p{font-size:14px;color:var(--text-muted);margin-top:8px;max-width:640px}
  .divider{height:1px;background:var(--line);margin:0}

  /* ============ 筛选 chips ============ */
  .chips{
    display:flex;gap:10px;overflow-x:auto;padding:4px 2px 12px;
    scrollbar-width:none;-ms-overflow-style:none;
  }
  .chips::-webkit-scrollbar{display:none}
  .chip{
    flex:0 0 auto;height:40px;padding:0 20px;border-radius:999px;
    border:1px solid var(--line);background:#fff;color:var(--text-muted);
    font-size:14px;font-weight:600;
    transition:color .2s ease,border-color .2s ease,background .2s ease,transform .2s ease,box-shadow .2s ease;
  }
  .chip:hover{color:var(--brand-1);border-color:rgba(108,59,255,.45);transform:translateY(-1px)}
  .chip.active{
    background:linear-gradient(135deg,var(--brand-1),var(--brand-2));
    border-color:transparent;color:#fff;
    box-shadow:0 12px 26px -14px rgba(108,59,255,.95);
  }

  /* ============ 竖屏片段网格 ============ */
  .clip-grid{
    display:flex;gap:16px;overflow-x:auto;padding:2px 2px 14px;
    scroll-snap-type:x mandatory;scrollbar-width:none;-ms-overflow-style:none;
  }
  .clip-grid::-webkit-scrollbar{display:none}
  .clip-card{
    position:relative;flex:0 0 62%;scroll-snap-align:start;
    border-radius:var(--r-md);overflow:hidden;aspect-ratio:9/16;
    background:linear-gradient(160deg,#2A1F55,#150F30);
    box-shadow:var(--shadow-card);
    transition:transform .28s ease,box-shadow .28s ease;
  }
  .clip-card.hide{display:none}
  .clip-card img{width:100%;height:100%;object-fit:cover;transition:transform .4s ease}
  .clip-card::after{content:"";position:absolute;inset:0;background:linear-gradient(180deg,transparent 40%,rgba(11,9,24,.86) 100%)}
  .clip-card:hover{transform:translateY(-5px);box-shadow:var(--shadow-pop)}
  .clip-card:hover img{transform:scale(1.05)}
  .clip-card:focus-within{outline:3px solid var(--accent-gold);outline-offset:2px}
  .clip-tag{
    position:absolute;top:12px;left:12px;z-index:3;
    padding:5px 11px;border-radius:999px;font-size:12px;font-weight:700;
    background:rgba(255,106,61,.92);color:#fff;
  }
  .clip-tag.pick{background:rgba(46,211,160,.92);color:#04301F}
  .clip-tag.new{background:rgba(108,59,255,.92);color:#fff}
  .clip-tag.hot{background:rgba(255,194,75,.95);color:#2A1B00}
  .clip-body{position:absolute;left:0;right:0;bottom:0;z-index:3;padding:16px 16px 18px}
  .clip-body h3{font-size:17px;font-weight:600;color:#fff;line-height:1.45;display:-webkit-box;-webkit-line-clamp:2;-webkit-box-orient:vertical;overflow:hidden}
  .clip-meta{display:flex;align-items:center;justify-content:space-between;margin-top:10px;font-size:12px;color:rgba(255,255,255,.68)}
  .clip-views{font-variant-numeric:tabular-nums}

  /* ============ 种草清单 ============ */
  .checklist{display:grid;grid-template-columns:1fr;gap:0}
  .check-item{
    display:flex;align-items:center;gap:16px;
    padding:18px 4px;border-bottom:1px solid var(--line);
    transition:background .22s ease,transform .22s ease;
  }
  .check-item:hover{background:rgba(108,59,255,.04);transform:translateX(3px)}
  .check-idx{
    flex:0 0 auto;width:40px;font-size:26px;font-weight:800;line-height:1;
    color:rgba(108,59,255,.28);font-variant-numeric:tabular-nums;letter-spacing:-.02em;
  }
  .check-thumb{flex:0 0 auto;width:62px;height:78px;border-radius:var(--r-sm);overflow:hidden;background:#241C4D}
  .check-thumb img{width:100%;height:100%;object-fit:cover}
  .check-main{flex:1 1 auto;min-width:0}
  .check-main h3{font-size:17px;font-weight:600;line-height:1.5}
  .check-main p{font-size:13px;color:var(--text-muted);margin-top:4px;display:-webkit-box;-webkit-line-clamp:2;-webkit-box-orient:vertical;overflow:hidden}
  .check-price{font-size:13px;font-weight:700;color:var(--brand-1);margin-top:6px;font-variant-numeric:tabular-nums}

  /* ============ 口碑 ============ */
  .review-wrap{background:#fff;border-radius:var(--r-lg);padding:32px;box-shadow:var(--shadow-card);border:1px solid var(--line)}
  .review-top{display:flex;align-items:center;gap:18px;flex-wrap:wrap;margin-bottom:24px}
  .score-badge{
    display:inline-flex;align-items:baseline;gap:8px;
    padding:12px 20px;border-radius:16px;
    background:linear-gradient(135deg,rgba(108,59,255,.10),rgba(255,77,141,.10));
    border:1px solid rgba(108,59,255,.22);
  }
  .score-badge b{font-size:26px;font-weight:800;color:var(--brand-1);font-variant-numeric:tabular-nums;line-height:1}
  .score-badge span{font-size:13px;color:var(--text-muted)}
  .stars{color:var(--accent-cyan);font-size:13px;letter-spacing:2px}
  .review-grid{display:grid;grid-template-columns:1fr;gap:18px}
  .review-card{background:var(--paper);border-radius:var(--r-md);padding:20px;border:1px solid var(--line)}
  .review-user{display:flex;align-items:center;gap:12px;margin-bottom:12px}
  .avatar{
    width:40px;height:40px;border-radius:50%;flex:0 0 auto;
    display:flex;align-items:center;justify-content:center;
    background:linear-gradient(135deg,var(--brand-1),var(--brand-2));
    color:#fff;font-size:15px;font-weight:700;
  }
  .review-user strong{font-size:14px;font-weight:600;display:block;line-height:1.4}
  .review-card p{font-size:14px;color:var(--text-muted);line-height:1.8;margin-top:10px;display:-webkit-box;-webkit-line-clamp:2;-webkit-box-orient:vertical;overflow:hidden}

  /* ============ FAQ ============ */
  .faq-item{background:#fff;border-radius:var(--r-md);border:1px solid var(--line);box-shadow:var(--shadow-card);margin-bottom:12px;overflow:hidden}
  .faq-q{
    width:100%;display:flex;align-items:center;justify-content:space-between;gap:16px;
    padding:20px 24px;font-size:17px;font-weight:600;text-align:left;line-height:1.6;
  }
  .faq-icon{
    flex:0 0 auto;width:26px;height:26px;border-radius:8px;
    display:flex;align-items:center;justify-content:center;
    background:rgba(108,59,255,.10);color:var(--brand-1);
    font-size:18px;font-weight:700;line-height:1;
    transition:transform .2s ease,background .2s ease,color .2s ease;
  }
  .faq-item.open .faq-icon{transform:rotate(45deg);background:linear-gradient(135deg,var(--brand-1),var(--brand-2));color:#fff}
  .faq-a{max-height:0;overflow:hidden;transition:max-height .26s ease}
  .faq-a p{padding:0 24px 22px;font-size:15px;color:var(--text-muted);line-height:1.85}
  .faq-item.open .faq-a{max-height:340px}

  /* ============ CTA ============ */
  .cta-card{
    position:relative;overflow:hidden;border-radius:var(--r-lg);
    padding:56px 40px;text-align:center;color:#fff;
    background:linear-gradient(135deg,var(--brand-1),var(--brand-2));
    box-shadow:var(--shadow-pop);
  }
  .cta-card::after{
    content:"";position:absolute;inset:0;pointer-events:none;
    background:
      radial-gradient(1.6px 1.6px at 15% 25%,rgba(255,255,255,.22),transparent 60%),
      radial-gradient(1.6px 1.6px at 62% 72%,rgba(255,255,255,.16),transparent 60%),
      radial-gradient(1.6px 1.6px at 84% 22%,rgba(255,255,255,.18),transparent 60%);
  }
  .cta-card h2{position:relative;z-index:2;font-size:clamp(24px,3.2vw,34px);font-weight:700;line-height:1.3}
  .cta-card p{position:relative;z-index:2;margin-top:14px;font-size:15px;color:rgba(255,255,255,.86);max-width:640px;margin-left:auto;margin-right:auto}
  .cta-actions{position:relative;z-index:2;display:flex;gap:14px;justify-content:center;flex-wrap:wrap;margin-top:28px}
  .btn-white{background:#fff;color:var(--brand-1);height:48px;padding:0 28px;border-radius:999px;font-weight:700;display:inline-flex;align-items:center;transition:transform .2s ease,box-shadow .2s ease}
  .btn-white:hover{transform:translateY(-2px);box-shadow:0 20px 40px -18px rgba(0,0,0,.5)}
  .btn-line{border:1.5px solid rgba(255,255,255,.6);color:#fff;height:48px;padding:0 28px;border-radius:999px;font-weight:600;display:inline-flex;align-items:center;transition:background .2s ease,transform .2s ease}
  .btn-line:hover{background:rgba(255,255,255,.16);transform:translateY(-2px)}

  /* ============ 页脚 ============ */
  .site-footer{position:relative;background:var(--ink-900);color:rgba(255,255,255,.72);padding-top:56px;margin-top:24px}
  .site-footer::before{content:"";position:absolute;top:0;left:0;right:0;height:1px;background:linear-gradient(90deg,var(--brand-1),var(--brand-2))}
  .footer-grid{display:grid;grid-template-columns:1fr;gap:32px}
  .footer-brand{display:flex;align-items:center;gap:12px;margin-bottom:16px}
  .footer-about{font-size:14px;color:rgba(255,255,255,.55);line-height:1.9;max-width:360px}
  .site-footer h4{font-size:14px;font-weight:700;color:#fff;margin-bottom:16px;letter-spacing:.02em}
  .site-footer ul li{margin-bottom:10px}
  .site-footer ul a{font-size:14px;color:rgba(255,255,255,.62);transition:color .2s ease,padding-left .2s ease}
  .site-footer ul a:hover{color:#fff;padding-left:3px}
  .footer-contact p{font-size:14px;color:rgba(255,255,255,.58);margin-bottom:10px}
  .footer-bottom{
    display:flex;justify-content:space-between;align-items:center;gap:12px;flex-wrap:wrap;
    margin-top:44px;padding:22px 0;border-top:1px solid rgba(255,255,255,.10);
    font-size:13px;color:rgba(255,255,255,.45);
  }
  .ph-fallback{position:relative;background:linear-gradient(135deg,var(--brand-1),var(--brand-2))!important}
  .ph-fallback::after{
    content:"★";position:absolute;left:50%;top:50%;transform:translate(-50%,-50%);
    color:rgba(255,255,255,.9);font-size:28px;
  }

  /* ============ 响应式 ============ */
  @media (min-width:640px){
    .clip-grid{display:grid;grid-template-columns:repeat(2,1fr);overflow:visible;padding-bottom:2px;scroll-snap-type:none}
    .clip-card{flex:none}
    .review-grid{grid-template-columns:repeat(2,1fr)}
    .footer-grid{grid-template-columns:1fr 1fr}
    .chips{flex-wrap:wrap;overflow:visible}
  }
  @media (min-width:1024px){
    .section{padding:80px 0}
    .clip-grid{grid-template-columns:repeat(3,1fr);gap:22px}
    .review-grid{grid-template-columns:repeat(3,1fr)}
    .checklist{grid-template-columns:1fr 1fr;column-gap:44px}
    .footer-grid{grid-template-columns:1.5fr 1fr 1fr 1.2fr}
    .cta-card{padding:72px 64px}
  }
  @media (min-width:1280px){
    .clip-grid{grid-template-columns:repeat(4,1fr)}
  }
  @media (max-width:1023px){
    .sidebar{
      transform:translateX(-100%);width:280px;
      transition:transform .28s cubic-bezier(.4,0,.2,1);
      box-shadow:0 0 60px rgba(0,0,0,.6);
    }
    .sidebar.open{transform:translateX(0)}
    .drawer-mask.show{opacity:1;visibility:visible}
    .topbar{
      position:fixed;top:0;left:0;right:0;height:60px;z-index:50;
      display:flex;align-items:center;justify-content:space-between;
      padding:0 16px;background:rgba(11,9,24,.94);
      border-bottom:1px solid rgba(255,255,255,.08);
      transition:box-shadow .25s ease;
      backdrop-filter:blur(8px);
    }
    .topbar.scrolled{box-shadow:0 10px 30px -14px rgba(0,0,0,.9)}
    .topbar-title{font-size:13px;color:rgba(255,255,255,.6);letter-spacing:.02em;white-space:nowrap;overflow:hidden;text-overflow:ellipsis;max-width:46%}
    .topbar-logo{display:flex;align-items:center;gap:8px}
    .hamburger{width:40px;height:40px;border-radius:12px;display:flex;align-items:center;justify-content:center;background:rgba(255,255,255,.08);color:#fff}
    .hamburger:hover{background:rgba(255,255,255,.16)}
    .main-wrap{margin-left:0;padding-top:60px}
    .container{padding:0 18px}
    .hero-inner{grid-template-columns:1fr;gap:36px;padding:36px 0 52px}
    .hero-media{max-width:250px;margin:0 auto}
    .hero-sub{font-size:15px}
    .review-wrap{padding:22px}
    .cta-card{padding:44px 22px}
    .check-idx{width:34px;font-size:22px}
  }
  @media (max-width:520px){
    .stats{gap:10px}
    .stat{flex:1 1 46%;min-width:0;padding:10px 12px}
    .stat b{font-size:18px}
    .clip-card{flex:0 0 66%}
    .check-thumb{width:56px;height:70px}
  }

/* roulang page: category2 */
:root{
    --brand-1:#6C3BFF;
    --brand-2:#FF4D8D;
    --accent-gold:#FFC24B;
    --accent-cyan:#2ED3A0;
    --accent-orange:#FF6A3D;
    --ink-900:#0B0918;
    --ink-800:#171233;
    --ink-700:#221A46;
    --paper:#F7F5FF;
    --card:#FFFFFF;
    --text-strong:#1A1433;
    --text-muted:#6B6486;
    --text-dark:#EDE9FF;
    --text-dark-muted:#A79FC9;
    --line:rgba(26,20,51,.10);
    --line-dark:rgba(255,255,255,.10);
    --grad:linear-gradient(135deg,#6C3BFF 0%,#FF4D8D 100%);
    --radius-lg:28px;
    --radius-md:20px;
    --radius-sm:12px;
    --shadow-card:0 12px 32px -12px rgba(20,12,60,.18), 0 2px 6px rgba(20,12,60,.06);
    --shadow-pop:0 24px 60px -20px rgba(108,59,255,.35);
    --nav-w:248px;
    --max-w:1200px;
  }

  *,*::before,*::after{box-sizing:border-box;}
  html{-webkit-text-size-adjust:100%;}
  body{
    margin:0;
    font-family:-apple-system,BlinkMacSystemFont,"PingFang SC","Microsoft YaHei","Source Han Sans SC",sans-serif;
    font-size:16px;
    line-height:1.8;
    color:var(--text-dark);
    background-color:var(--ink-900);
    background-image:
      radial-gradient(rgba(255,255,255,.055) 1px, transparent 1px),
      radial-gradient(rgba(255,255,255,.040) 1px, transparent 1px),
      radial-gradient(circle at 80% 4%, rgba(108,59,255,.26), transparent 42%),
      radial-gradient(circle at 8% 86%, rgba(255,77,141,.15), transparent 46%);
    background-size:118px 118px, 66px 66px, auto, auto;
    background-position:0 0, 32px 44px, center, center;
    background-attachment:fixed;
    -webkit-font-smoothing:antialiased;
  }
  a{color:inherit;text-decoration:none;}
  img{max-width:100%;display:block;}
  button,input{font:inherit;color:inherit;}
  ul{list-style:none;margin:0;padding:0;}
  h1,h2,h3,h4,p{margin:0;}
  :focus-visible{outline:3px solid rgba(255,194,75,.9);outline-offset:2px;border-radius:10px;}

  /* ============ 布局骨架 ============ */
  .app-shell{min-height:100vh;}
  .main-wrap{margin-left:var(--nav-w);min-height:100vh;display:flex;flex-direction:column;}
  .container{width:100%;max-width:var(--max-w);margin:0 auto;padding:0 32px;}

  /* ============ 左侧固定导航 ============ */
  .side-nav-wrap{
    position:fixed;top:0;left:0;bottom:0;width:var(--nav-w);z-index:60;
    display:flex;flex-direction:column;
    background:var(--ink-800);
    background-image:radial-gradient(circle at 30% 0%, rgba(108,59,255,.28), transparent 58%);
    border-right:1px solid var(--line-dark);
    padding:24px 16px 22px;
    overflow-y:auto;
    transition:transform .28s ease;
  }
  .side-nav-wrap::-webkit-scrollbar{width:6px;}
  .side-nav-wrap::-webkit-scrollbar-thumb{background:rgba(255,255,255,.14);border-radius:99px;}

  .brand{display:flex;align-items:center;gap:12px;padding:6px 10px 22px;}
  .brand-mark{
    width:40px;height:40px;flex:none;border-radius:12px;
    background:var(--grad);display:grid;place-items:center;
    font-size:18px;font-weight:800;color:#fff;
    box-shadow:0 10px 24px -10px rgba(108,59,255,.8);
  }
  .brand-text{display:flex;flex-direction:column;line-height:1.3;min-width:0;}
  .brand-text strong{font-size:15px;font-weight:700;color:#fff;letter-spacing:-.01em;}
  .brand-text small{font-size:11.5px;color:var(--text-dark-muted);letter-spacing:.06em;}

  .side-nav{display:flex;flex-direction:column;gap:6px;margin-top:6px;}
  .nav-item{
    position:relative;display:flex;align-items:center;gap:12px;height:48px;
    padding:0 14px;border-radius:var(--radius-sm);
    color:var(--text-dark-muted);font-size:15px;font-weight:500;
    transition:background .2s ease,color .2s ease,transform .2s ease;
  }
  .nav-item svg{flex:none;}
  .nav-item:hover{background:rgba(255,255,255,.07);color:#fff;transform:translateX(2px);}
  .nav-item.active{
    background:linear-gradient(90deg, rgba(108,59,255,.30), rgba(255,77,141,.10));
    color:#fff;font-weight:600;
  }
  .nav-item.active::before{
    content:"";position:absolute;left:-16px;top:9px;bottom:9px;width:3px;
    border-radius:0 3px 3px 0;background:var(--grad);
  }
  .nav-label{white-space:nowrap;overflow:hidden;text-overflow:ellipsis;}

  .side-foot{margin-top:auto;padding:22px 10px 0;}
  .side-cta{
    display:flex;align-items:center;justify-content:center;gap:8px;
    width:100%;height:46px;border-radius:999px;border:0;cursor:pointer;
    background:var(--grad);color:#fff;font-size:14.5px;font-weight:600;
    transition:filter .2s ease,transform .2s ease,box-shadow .2s ease;
  }
  .side-cta:hover{filter:brightness(1.07);transform:translateY(-2px);box-shadow:var(--shadow-pop);}
  .side-cta:active{transform:translateY(0);}
  .side-tips{margin-top:14px;font-size:12px;line-height:1.7;color:var(--text-dark-muted);}
  .side-tips span{display:block;}

  /* ============ 移动端顶栏与抽屉 ============ */
  .mobile-topbar{
    display:none;position:sticky;top:0;z-index:70;height:60px;
    align-items:center;gap:12px;padding:0 16px;
    background:rgba(11,9,24,.94);backdrop-filter:blur(10px);
    border-bottom:1px solid var(--line-dark);
    transition:box-shadow .25s ease;
  }
  .mobile-topbar.scrolled{box-shadow:0 12px 30px -16px rgba(0,0,0,.9);}
  .brand-mini{display:flex;align-items:center;gap:9px;flex:none;}
  .brand-mini .brand-mark{width:32px;height:32px;border-radius:10px;font-size:15px;}
  .brand-mini strong{font-size:14px;color:#fff;font-weight:700;white-space:nowrap;}
  .topbar-title{
    margin-left:auto;font-size:13px;color:var(--text-dark-muted);
    white-space:nowrap;overflow:hidden;text-overflow:ellipsis;
  }
  .burger{
    width:42px;height:42px;flex:none;display:grid;place-items:center;
    border-radius:12px;border:1px solid var(--line-dark);
    background:rgba(255,255,255,.05);cursor:pointer;
    transition:background .2s ease;
  }
  .burger:hover{background:rgba(255,255,255,.12);}
  .burger span{display:block;width:18px;height:2px;background:#fff;border-radius:2px;position:relative;}
  .burger span::before,.burger span::after{
    content:"";position:absolute;left:0;width:18px;height:2px;background:#fff;border-radius:2px;
  }
  .burger span::before{top:-6px;}
  .burger span::after{top:6px;}

  .drawer-mask{
    position:fixed;inset:0;z-index:55;background:rgba(11,9,24,.62);
    opacity:0;pointer-events:none;transition:opacity .25s ease;
  }
  .drawer-mask.show{opacity:1;pointer-events:auto;}

  /* ============ 主视觉 ============ */
  .cat-hero-wrap{padding-top:32px;}
  .cat-hero{
    position:relative;border-radius:var(--radius-lg);overflow:hidden;
    aspect-ratio:21/9;min-height:290px;
    border:1px solid var(--line-dark);
    background:linear-gradient(135deg, rgba(108,59,255,.55), rgba(255,77,141,.32));
    box-shadow:0 30px 70px -30px rgba(0,0,0,.9);
  }
  .cat-hero img{position:absolute;inset:0;width:100%;height:100%;object-fit:cover;}
  .cat-hero .veil{
    position:absolute;inset:0;
    background:linear-gradient(96deg, rgba(11,9,24,.95) 0%, rgba(11,9,24,.74) 42%, rgba(23,18,51,.28) 100%);
  }
  .cat-hero .hero-inner{position:absolute;left:0;right:0;bottom:0;z-index:2;padding:44px 48px;}
  .eyebrow{
    display:inline-flex;align-items:center;gap:8px;
    font-size:12px;font-weight:700;letter-spacing:.06em;
    color:var(--accent-gold);text-transform:uppercase;
  }
  .eyebrow::before{content:"";width:22px;height:2px;border-radius:2px;background:var(--grad);}
  .cat-hero h1{
    margin:14px 0 12px;
    font-size:clamp(28px,3.8vw,46px);
    font-weight:800;line-height:1.14;letter-spacing:-.02em;color:#fff;
  }
  .cat-hero .hero-lead{max-width:640px;font-size:15.5px;line-height:1.8;color:rgba(237,233,255,.86);}
  .hero-chips{display:flex;flex-wrap:wrap;gap:10px;margin-top:20px;}
  .hero-chip{
    display:inline-flex;align-items:center;gap:6px;height:30px;padding:0 13px;
    border-radius:999px;font-size:12.5px;font-weight:600;
    color:#fff;background:rgba(255,255,255,.10);border:1px solid rgba(255,255,255,.16);
  }
  .hero-chip.gold{background:var(--accent-gold);color:#241705;border-color:transparent;}

  .stat-row{display:flex;flex-wrap:wrap;gap:14px;margin-top:20px;}
  .stat{
    display:flex;align-items:baseline;gap:8px;padding:14px 20px;border-radius:16px;
    background:rgba(255,255,255,.045);border:1px solid var(--line-dark);
  }
  .stat b{font-size:22px;font-weight:800;color:#fff;font-variant-numeric:tabular-nums;line-height:1;}
  .stat span{font-size:13px;color:var(--text-dark-muted);}

  /* ============ 两栏主体 ============ */
  .cat-body{
    display:grid;grid-template-columns:minmax(0,1fr) 340px;
    gap:32px;align-items:start;margin-top:56px;
  }
  .cat-main{display:flex;flex-direction:column;gap:48px;min-width:0;}
  .group-head{
    display:flex;align-items:baseline;justify-content:space-between;gap:16px;
    margin-bottom:18px;padding-bottom:14px;
    border-bottom:1px solid var(--line-dark);
  }
  .group-head h2{
    font-size:clamp(21px,2.4vw,27px);font-weight:700;letter-spacing:-.01em;color:#fff;
    display:flex;align-items:center;gap:10px;
  }
  .group-head h2::before{
    content:"";width:4px;height:22px;border-radius:3px;background:var(--grad);flex:none;
  }
  .group-head .count{font-size:13px;color:var(--text-dark-muted);font-variant-numeric:tabular-nums;}

  .entry-list{display:flex;flex-direction:column;gap:16px;}
  .entry{
    display:grid;grid-template-columns:176px minmax(0,1fr);gap:20px;
    padding:18px;border-radius:var(--radius-md);
    background:var(--card);border:1px solid var(--line);
    box-shadow:var(--shadow-card);
    transition:transform .22s ease,box-shadow .22s ease,border-color .22s ease;
  }
  .entry:hover{
    transform:translateY(-3px);
    box-shadow:0 26px 50px -22px rgba(20,12,60,.34);
    border-color:rgba(108,59,255,.28);
  }
  .thumb{
    position:relative;aspect-ratio:16/10;border-radius:14px;overflow:hidden;
    background:linear-gradient(135deg, rgba(108,59,255,.55), rgba(255,77,141,.38));
  }
  .thumb::before{
    content:"✦";position:absolute;inset:0;display:grid;place-items:center;
    font-size:20px;color:rgba(255,255,255,.6);
  }
  .thumb img{position:relative;z-index:1;width:100%;height:100%;object-fit:cover;transition:transform .4s ease;}
  .entry:hover .thumb img{transform:scale(1.05);}
  .entry-body{min-width:0;display:flex;flex-direction:column;}
  .entry-body h3{
    font-size:17.5px;font-weight:700;line-height:1.45;color:var(--text-strong);
    letter-spacing:-.005em;
  }
  .entry-body h3 a:hover{color:var(--brand-1);}
  .entry-body p{
    margin-top:8px;font-size:14.5px;line-height:1.75;color:var(--text-muted);
    display:-webkit-box;-webkit-line-clamp:2;-webkit-box-orient:vertical;overflow:hidden;
  }
  .entry-meta{
    display:flex;align-items:center;flex-wrap:wrap;gap:10px;
    margin-top:auto;padding-top:12px;font-size:12.5px;color:var(--text-muted);
  }
  .entry-tag{
    padding:3px 10px;border-radius:999px;background:rgba(108,59,255,.10);
    color:var(--brand-1);font-size:12px;font-weight:600;
  }
  .entry-tag.gold{background:rgba(255,194,75,.18);color:#8A5B00;}
  .entry-tag.cyan{background:rgba(46,211,160,.16);color:#11704F;}
  .dot-sep{width:4px;height:4px;border-radius:50%;background:rgba(26,20,51,.2);}
  .entry-time{font-variant-numeric:tabular-nums;}

  /* ============ 侧栏 ============ */
  .cat-side{min-width:0;}
  .side-sticky{position:sticky;top:24px;display:flex;flex-direction:column;gap:18px;}
  .side-card{
    padding:22px;border-radius:var(--radius-md);
    background:rgba(255,255,255,.045);
    border:1px solid var(--line-dark);
  }
  .side-title{
    font-size:14px;font-weight:700;color:#fff;letter-spacing:.04em;
    display:flex;align-items:center;gap:8px;margin-bottom:16px;
  }
  .side-title::before{content:"";width:3px;height:14px;border-radius:2px;background:var(--grad);}
  .anchor-list{display:flex;flex-direction:column;gap:4px;}
  .anchor-list a{
    display:flex;align-items:center;justify-content:space-between;gap:10px;
    padding:9px 12px;border-radius:10px;font-size:14px;color:var(--text-dark-muted);
    transition:background .2s ease,color .2s ease,padding-left .2s ease;
  }
  .anchor-list a::after{content:"→";font-size:12px;opacity:.5;}
  .anchor-list a:hover{background:rgba(108,59,255,.20);color:#fff;padding-left:16px;}
  .tag-cloud{display:flex;flex-wrap:wrap;gap:8px;}
  .tag{
    display:inline-flex;align-items:center;height:30px;padding:0 12px;border-radius:999px;
    font-size:12.5px;color:var(--text-dark);background:rgba(255,255,255,.07);
    border:1px solid var(--line-dark);transition:background .2s ease,transform .2s ease,border-color .2s ease;
  }
  .tag:hover{background:rgba(108,59,255,.30);border-color:rgba(108,59,255,.5);transform:translateY(-1px);}
  .side-card-cta{
    background:linear-gradient(160deg, rgba(108,59,255,.30), rgba(255,77,141,.14));
    border-color:rgba(255,255,255,.16);
  }
  .side-card-cta h3{font-size:17px;font-weight:700;color:#fff;margin-bottom:8px;}
  .side-card-cta p{font-size:13.5px;line-height:1.75;color:rgba(237,233,255,.82);margin-bottom:16px;}
  .side-form{display:flex;flex-direction:column;gap:10px;}
  .side-form label{font-size:13px;font-weight:600;color:#fff;}
  .side-form input{
    height:48px;padding:0 14px;border-radius:14px;
    background:rgba(255,255,255,.07);border:1px solid var(--line-dark);
    color:#fff;font-size:14px;transition:border-color .2s ease,box-shadow .2s ease,background .2s ease;
  }
  .side-form input::placeholder{color:rgba(237,233,255,.45);}
  .side-form input:focus{
    outline:none;border-color:var(--brand-1);background:rgba(255,255,255,.10);
    box-shadow:0 0 0 3px rgba(108,59,255,.22);
  }
  .side-form .hint{font-size:12px;color:var(--text-dark-muted);}

  /* ============ 按钮 ============ */
  .btn{
    display:inline-flex;align-items:center;justify-content:center;gap:8px;
    height:48px;padding:0 26px;border-radius:999px;border:0;cursor:pointer;
    font-size:15px;font-weight:600;white-space:nowrap;
    transition:transform .2s ease,filter .2s ease,box-shadow .2s ease,background .2s ease;
  }
  .btn-primary{background:var(--grad);color:#fff;box-shadow:0 14px 30px -16px rgba(108,59,255,.85);}
  .btn-primary:hover{filter:brightness(1.07);transform:translateY(-2px);box-shadow:var(--shadow-pop);}
  .btn-primary:active{transform:translateY(0);}
  .btn-ghost{background:transparent;color:#fff;border:1.5px solid rgba(255,255,255,.34);}
  .btn-ghost:hover{background:rgba(255,255,255,.12);transform:translateY(-2px);}
  .btn-ghost:active{transform:translateY(0);}
  .btn-gold{background:var(--accent-gold);color:#241705;height:44px;font-size:14.5px;}
  .btn-gold:hover{filter:brightness(1.06);transform:translateY(-1px);}
  .btn-gold:active{transform:translateY(0);}
  .btn-text{
    height:auto;padding:0;background:none;color:var(--brand-1);
    font-size:14.5px;text-decoration:underline;text-underline-offset:3px;
  }
  .btn-text:hover{color:var(--brand-2);}

  /* ============ FAQ ============ */
  .section{margin-top:84px;}
  .section-head{margin-bottom:26px;}
  .section-head .eyebrow{color:var(--accent-gold);}
  .section-head h2{
    margin-top:12px;font-size:clamp(24px,3.2vw,34px);font-weight:700;
    letter-spacing:-.015em;line-height:1.25;color:#fff;
  }
  .section-head p{margin-top:10px;font-size:15px;color:var(--text-dark-muted);max-width:640px;}

  .faq-list{display:grid;grid-template-columns:repeat(2,minmax(0,1fr));gap:16px;}
  .faq-item{
    background:var(--card);border:1px solid var(--line);border-radius:var(--radius-md);
    overflow:hidden;box-shadow:var(--shadow-card);transition:border-color .2s ease;
  }
  .faq-item.open{border-color:rgba(108,59,255,.32);}
  .faq-q{
    display:flex;align-items:center;justify-content:space-between;gap:16px;width:100%;
    padding:20px 22px;background:none;border:0;cursor:pointer;text-align:left;
    font-size:17px;font-weight:600;color:var(--text-strong);line-height:1.5;
  }
  .faq-icon{
    position:relative;width:22px;height:22px;flex:none;transition:transform .2s ease;
  }
  .faq-icon::before,.faq-icon::after{
    content:"";position:absolute;top:50%;left:50%;background:var(--brand-1);border-radius:2px;
    transform:translate(-50%,-50%);
  }
  .faq-icon::before{width:14px;height:2px;}
  .faq-icon::after{width:2px;height:14px;}
  .faq-item.open .faq-icon{transform:rotate(45deg);}
  .faq-a{max-height:0;overflow:hidden;transition:max-height .24s ease;}
  .faq-item.open .faq-a{max-height:320px;}
  .faq-a p{padding:0 22px 20px;font-size:15px;line-height:1.8;color:var(--text-muted);}

  /* ============ 底部 CTA ============ */
  .cta-card{
    position:relative;overflow:hidden;border-radius:var(--radius-lg);
    padding:56px 48px;background:var(--grad);color:#fff;
    box-shadow:0 36px 80px -40px rgba(108,59,255,.9);
  }
  .cta-card::before{
    content:"";position:absolute;inset:0;
    background-image:
      radial-gradient(rgba(255,255,255,.10) 1px, transparent 1px),
      radial-gradient(circle at 88% 12%, rgba(255,255,255,.26), transparent 40%);
    background-size:70px 70px, auto;
    opacity:.7;pointer-events:none;
  }
  .cta-inner{position:relative;z-index:1;display:flex;flex-wrap:wrap;gap:28px;align-items:center;justify-content:space-between;}
  .cta-card h2{font-size:clamp(24px,3vw,34px);font-weight:800;letter-spacing:-.015em;line-height:1.25;}
  .cta-card p{margin-top:12px;max-width:560px;font-size:15px;line-height:1.8;color:rgba(255,255,255,.9);}
  .cta-actions{display:flex;flex-wrap:wrap;gap:14px;}
  .cta-card .btn-ghost{border-color:rgba(255,255,255,.6);}
  .cta-card .btn-ghost:hover{background:rgba(255,255,255,.18);}
  .cta-card .btn-gold{height:48px;padding:0 26px;font-size:15px;}

  /* ============ 页脚 ============ */
  .site-footer{
    position:relative;margin-top:96px;padding:56px 0 30px;
    background:var(--ink-900);
    background-image:radial-gradient(circle at 84% 0%, rgba(108,59,255,.20), transparent 46%);
    border-top:1px solid var(--line-dark);
  }
  .site-footer::before{
    content:"";position:absolute;top:-1px;left:0;right:0;height:2px;background:var(--grad);
  }
  .footer-grid{display:grid;grid-template-columns:1.7fr 1fr 1fr 1.3fr;gap:34px;}
  .footer-brand{display:flex;align-items:center;gap:10px;margin-bottom:14px;}
  .footer-brand .brand-mark{width:34px;height:34px;border-radius:10px;font-size:15px;}
  .footer-about{font-size:14px;line-height:1.85;color:var(--text-dark-muted);max-width:330px;}
  .site-footer h4{font-size:14px;font-weight:700;color:#fff;letter-spacing:.04em;margin:0 0 16px;}
  .site-footer ul{display:flex;flex-direction:column;gap:11px;}
  .site-footer ul a{font-size:14px;color:var(--text-dark-muted);transition:color .2s ease,padding-left .2s ease;}
  .site-footer ul a:hover{color:#fff;padding-left:4px;}
  .footer-contact p{font-size:14px;line-height:1.9;color:var(--text-dark-muted);margin-bottom:6px;}
  .footer-bottom{
    display:flex;flex-wrap:wrap;gap:10px;justify-content:space-between;
    margin-top:44px;padding-top:20px;border-top:1px solid var(--line-dark);
    font-size:13px;color:#7B739E;
  }

  /* ============ 响应式 ============ */
  @media (max-width:1279px){
    .cat-body{grid-template-columns:minmax(0,1fr) 300px;gap:24px;}
    .cat-hero .hero-inner{padding:36px 38px;}
  }
  @media (max-width:1023px){
    .side-nav-wrap{transform:translateX(-100%);width:280px;box-shadow:26px 0 60px rgba(0,0,0,.6);}
    .side-nav-wrap.open{transform:translateX(0);}
    .main-wrap{margin-left:0;}
    .mobile-topbar{display:flex;}
    .cat-body{grid-template-columns:1fr;gap:36px;}
    .side-sticky{position:static;}
    .cat-hero{aspect-ratio:4/3;min-height:0;}
    .cat-hero .hero-inner{padding:30px 28px;}
    .faq-list{grid-template-columns:1fr;}
    .footer-grid{grid-template-columns:1fr 1fr;}
  }
  @media (max-width:767px){
    .container{padding:0 18px;}
    .entry{grid-template-columns:132px minmax(0,1fr);gap:14px;padding:14px;}
    .entry-body h3{font-size:16px;}
    .entry-body p{font-size:13.5px;-webkit-line-clamp:3;}
    .section{margin-top:60px;}
    .cta-card{padding:36px 24px;}
    .cta-actions{width:100%;}
    .cta-actions .btn{flex:1 1 auto;}
  }
  @media (max-width:520px){
    .cat-hero-wrap{padding-top:20px;}
    .cat-hero .hero-inner{padding:24px 20px;}
    .cat-hero .hero-lead{font-size:14px;}
    .hero-chips{gap:8px;}
    .entry{grid-template-columns:1fr;gap:12px;}
    .thumb{aspect-ratio:16/9;border-radius:12px;}
    .stat{flex:1 1 140px;padding:12px 16px;}
    .footer-grid{grid-template-columns:1fr;gap:26px;}
    .footer-bottom{flex-direction:column;}
    .app-shell{overflow-x:hidden;}
  }