/* roulang page: index */
:root{
  --brand-900:#2E1065;
  --brand-700:#4C1D95;
  --brand-600:#6D28D9;
  --brand-500:#8B5CF6;
  --brand-300:#C4B5FD;
  --accent-500:#12E0C8;
  --accent-400:#5FF2DF;
  --warm-400:#D9F84C;
  --coral-500:#FF6A4D;
  --ink:#1B1236;
  --ink-2:#584F78;
  --ink-3:#8E86A8;
  --bg:#F7F5FF;
  --bg-soft:#F3EFFF;
  --bg-deep:#150B33;
  --card:#FFFFFF;
  --line:#E9E4F8;
  --line-deep:rgba(255,255,255,.12);
  --grad:linear-gradient(135deg,#6D28D9 0%,#A21CAF 55%,#12E0C8 100%);
  --grad-deep:linear-gradient(160deg,#150B33 0%,#2A1260 100%);
  --shadow-1:0 6px 20px rgba(76,29,149,.08);
  --shadow-2:0 18px 48px rgba(76,29,149,.16);
  --glow:0 0 0 1px rgba(18,224,200,.18),0 12px 40px rgba(18,224,200,.18);
  --r-lg:24px;
  --r-md:18px;
  --r-sm:12px;
  --gap:24px;
}
*,*::before,*::after{box-sizing:border-box;}
html{-webkit-text-size-adjust:100%;scroll-behavior:smooth;}
body{
  margin:0;
  font-family:"HarmonyOS Sans","PingFang SC","Microsoft YaHei",system-ui,-apple-system,"Segoe UI",sans-serif;
  font-size:16px;
  line-height:1.85;
  color:var(--ink);
  background:var(--bg);
  letter-spacing:.4px;
  -webkit-font-smoothing:antialiased;
}
h1,h2,h3,h4,p,ul,ol,figure,blockquote{margin:0;}
ul,ol{padding:0;list-style:none;}
img{display:block;max-width:100%;height:auto;object-fit:cover;}
a{color:inherit;text-decoration:none;transition:color .2s ease;}
button,input{font-family:inherit;font-size:inherit;}
button{cursor:pointer;border:0;background:none;color:inherit;}
:focus-visible{outline:2px solid var(--accent-500);outline-offset:2px;border-radius:4px;}
.container{width:100%;max-width:1200px;margin:0 auto;padding:0 24px;}
.section{padding:80px 0;}
.section--tight{padding:56px 0;}
.section-head{display:flex;align-items:flex-end;justify-content:space-between;gap:24px;margin-bottom:36px;flex-wrap:wrap;}
.section-head h2{
  font-size:clamp(24px,2.6vw,32px);
  line-height:1.35;
  font-weight:700;
  letter-spacing:.2px;
}
.section-head .sub{font-size:14px;color:var(--ink-3);margin-top:6px;line-height:1.6;}
.link-more{
  font-size:14px;color:var(--brand-600);font-weight:600;
  border-bottom:2px solid var(--accent-500);padding-bottom:4px;
}
.link-more:hover{color:var(--brand-900);border-color:var(--brand-600);}

/* ============ 顶部导航 ============ */
.site-header{
  position:sticky;top:0;z-index:80;
  background:#fff;
  border-bottom:1px solid var(--line);
  transition:box-shadow .25s ease,padding .25s ease;
}
.site-header.is-stuck{box-shadow:var(--shadow-1);}
.nav-top{
  display:flex;align-items:center;gap:20px;
  padding:16px 0 12px;
  transition:padding .25s ease;
}
.site-header.is-stuck .nav-top{padding:8px 0 6px;}
.brand{display:flex;align-items:center;gap:12px;flex-shrink:0;}
.brand-mark{
  width:42px;height:42px;border-radius:var(--r-sm);
  background:var(--grad);
  display:flex;align-items:center;justify-content:center;
  color:#fff;font-weight:800;font-size:17px;
  box-shadow:var(--shadow-1);
  flex-shrink:0;
}
.brand-text{display:flex;flex-direction:column;line-height:1.2;}
.brand-name{font-size:18px;font-weight:800;color:var(--brand-900);letter-spacing:.4px;}
.brand-desc{font-size:12px;color:var(--ink-3);letter-spacing:.6px;}
.hot-chips{display:flex;gap:8px;overflow-x:auto;flex:1;scrollbar-width:none;padding:4px 0;}
.hot-chips::-webkit-scrollbar{display:none;}
.chip{
  flex:0 0 auto;
  font-size:12.5px;
  color:var(--ink-2);
  background:var(--bg-soft);
  border:1px solid var(--line);
  border-radius:999px;
  padding:5px 13px;
  white-space:nowrap;
  transition:all .2s ease;
}
.chip:hover{color:var(--brand-700);border-color:var(--brand-300);background:#fff;transform:translateY(-1px);}
.nav-tools{display:flex;align-items:center;gap:12px;flex-shrink:0;}
.search-box{
  display:flex;align-items:center;gap:8px;
  height:40px;padding:0 14px;
  border:1.5px solid var(--line);
  border-radius:999px;
  background:var(--bg);
  transition:border-color .2s ease,box-shadow .2s ease;
}
.search-box:focus-within{border-color:var(--brand-600);box-shadow:0 0 0 3px rgba(18,224,200,.22);background:#fff;}
.search-box input{border:0;background:transparent;outline:none;width:150px;color:var(--ink);font-size:14px;}
.search-box input::placeholder{color:var(--ink-3);}
.search-box svg{width:16px;height:16px;flex-shrink:0;stroke:var(--ink-3);}
.btn{
  display:inline-flex;align-items:center;justify-content:center;gap:8px;
  min-height:44px;padding:0 24px;
  border-radius:999px;
  font-size:15px;font-weight:600;
  letter-spacing:.4px;
  transition:transform .18s ease,box-shadow .22s ease,background .22s ease,color .2s ease,border-color .2s ease;
  white-space:nowrap;
}
.btn-primary{background:var(--grad);color:#fff;box-shadow:0 6px 18px rgba(109,40,217,.28);}
.btn-primary:hover{transform:translateY(-2px);box-shadow:var(--shadow-2);}
.btn-primary:active{transform:translateY(1px);}
.btn-ghost{background:#fff;color:var(--brand-600);border:1.5px solid var(--brand-600);}
.btn-ghost:hover{background:var(--bg-soft);transform:translateY(-2px);box-shadow:var(--shadow-1);}
.btn-light{background:rgba(255,255,255,.14);color:#fff;border:1.5px solid rgba(255,255,255,.45);}
.btn-light:hover{background:rgba(255,255,255,.24);transform:translateY(-2px);}
.btn-accent{background:var(--warm-400);color:var(--brand-900);}
.btn-accent:hover{transform:translateY(-2px);box-shadow:0 12px 30px rgba(217,248,76,.35);}
.btn-block{width:100%;}
.nav-main{
  display:flex;align-items:center;gap:28px;
  padding-bottom:0;
  overflow-x:auto;
  scrollbar-width:none;
}
.nav-main::-webkit-scrollbar{display:none;}
.nav-item{
  position:relative;
  font-size:15px;color:var(--ink-2);font-weight:500;
  padding:12px 0 14px;
  white-space:nowrap;
  transition:color .2s ease;
}
.nav-item::after{
  content:"";position:absolute;left:0;right:0;bottom:8px;height:3px;border-radius:3px;
  background:var(--grad);transform:scaleX(0);transform-origin:left;transition:transform .25s ease;
}
.nav-item:hover{color:var(--brand-600);}
.nav-item:hover::after{transform:scaleX(1);}
.nav-item.is-active{color:var(--brand-900);font-weight:700;}
.nav-item.is-active::after{transform:scaleX(1);}
.nav-toggle{
  display:none;width:44px;height:44px;border-radius:var(--r-sm);
  border:1.5px solid var(--line);align-items:center;justify-content:center;
}
.nav-toggle span{display:block;width:18px;height:2px;background:var(--brand-700);border-radius:2px;position:relative;}
.nav-toggle span::before,.nav-toggle span::after{
  content:"";position:absolute;left:0;width:18px;height:2px;background:var(--brand-700);border-radius:2px;
}
.nav-toggle span::before{top:-6px;}
.nav-toggle span::after{top:6px;}

/* 移动抽屉 */
.drawer{
  position:fixed;inset:0;z-index:120;
  background:rgba(21,11,51,.86);
  display:none;
  padding:24px;
}
.drawer.is-open{display:block;}
.drawer-panel{
  background:#fff;border-radius:var(--r-lg);
  max-width:420px;margin:0 auto;
  padding:24px;
  max-height:calc(100vh - 48px);
  overflow-y:auto;
}
.drawer-head{display:flex;align-items:center;justify-content:space-between;margin-bottom:20px;}
.drawer-close{width:40px;height:40px;border-radius:var(--r-sm);background:var(--bg-soft);font-size:20px;color:var(--brand-700);line-height:1;}
.drawer-nav{display:flex;flex-direction:column;gap:6px;margin-bottom:20px;}
.drawer-nav a{
  padding:14px 16px;border-radius:var(--r-sm);font-size:16px;font-weight:600;color:var(--ink);
}
.drawer-nav a:hover,.drawer-nav a.is-active{background:var(--bg-soft);color:var(--brand-700);}

/* ============ Hero ============ */
.hero{
  position:relative;
  background:var(--grad);
  overflow:hidden;
  padding:72px 0 88px;
}
.hero::before{
  content:"";position:absolute;inset:0;
  background-image:radial-gradient(rgba(255,255,255,.16) 1px,transparent 1px);
  background-size:22px 22px;
  opacity:.5;
  pointer-events:none;
}
.hero::after{
  content:"";position:absolute;right:-160px;top:-120px;width:520px;height:520px;border-radius:50%;
  background:radial-gradient(circle,rgba(18,224,200,.38),transparent 68%);
  pointer-events:none;
}
.hero-inner{
  position:relative;z-index:2;
  display:grid;
  grid-template-columns:300px minmax(0,1fr);
  gap:56px;
  align-items:center;
}
.hero-card{
  position:relative;
  width:100%;
  aspect-ratio:9/16;
  border-radius:var(--r-lg);
  overflow:hidden;
  box-shadow:0 24px 60px rgba(21,11,51,.42);
  transform:translateY(24px);
  background:var(--grad-deep);
}
.hero-card img{width:100%;height:100%;}
.hero-card::after{
  content:"";position:absolute;inset:0;
  background:linear-gradient(180deg,rgba(21,11,51,0) 42%,rgba(21,11,51,.78) 100%);
}
.hero-card-cap{
  position:absolute;left:20px;right:20px;bottom:20px;z-index:2;color:#fff;
}
.hero-card-cap .line-1{font-size:16px;font-weight:700;line-height:1.4;}
.hero-card-cap .line-2{font-size:13px;opacity:.82;margin-top:4px;}
.hero-badge{
  position:absolute;top:16px;right:16px;z-index:2;
  background:var(--warm-400);color:var(--brand-900);
  font-size:12.5px;font-weight:700;
  padding:5px 12px;border-radius:999px;
  letter-spacing:.4px;
}
.hero-copy{color:#fff;transform:translateX(-24px);}
.hero-eyebrow{
  display:inline-flex;align-items:center;gap:8px;
  font-size:13px;letter-spacing:1.2px;
  background:rgba(255,255,255,.16);
  border:1px solid rgba(255,255,255,.28);
  border-radius:999px;padding:6px 16px;
  margin-bottom:22px;
}
.hero h1{
  font-size:clamp(32px,4.2vw,54px);
  line-height:1.2;
  font-weight:800;
  letter-spacing:.6px;
  text-shadow:0 4px 24px rgba(21,11,51,.35);
}
.hero-sub{
  margin-top:20px;
  font-size:17px;
  line-height:1.85;
  color:rgba(255,255,255,.9);
  max-width:600px;
}
.hero-actions{display:flex;flex-wrap:wrap;gap:14px;margin-top:32px;}
.hero-stats{display:flex;flex-wrap:wrap;gap:12px;margin-top:36px;}
.stat-pill{
  display:flex;align-items:center;gap:8px;
  background:rgba(255,255,255,.14);
  border:1px solid rgba(255,255,255,.24);
  border-radius:999px;
  padding:8px 18px;
  font-size:13.5px;color:#fff;
}
.stat-pill b{font-variant-numeric:tabular-nums;font-size:16px;font-weight:800;color:var(--warm-400);}

/* ============ 横滑卡片 ============ */
.rail{
  display:flex;gap:16px;
  overflow-x:auto;
  scroll-snap-type:x mandatory;
  -webkit-overflow-scrolling:touch;
  padding:6px 24px 22px;
  margin:0 -24px;
  scrollbar-width:none;
}
.rail::-webkit-scrollbar{display:none;}
.clip-card{
  flex:0 0 236px;
  scroll-snap-align:start;
  background:var(--card);
  border:1px solid var(--line);
  border-radius:var(--r-lg);
  overflow:hidden;
  box-shadow:var(--shadow-1);
  transition:transform .22s ease,box-shadow .22s ease,border-color .22s ease;
}
.clip-card:hover{transform:translateY(-4px);box-shadow:var(--shadow-2);border-color:var(--brand-300);}
.clip-cover{position:relative;aspect-ratio:3/4;background:var(--grad-deep);overflow:hidden;}
.clip-cover img{width:100%;height:100%;transition:transform .4s ease;}
.clip-card:hover .clip-cover img{transform:scale(1.05);}
.clip-play{
  position:absolute;left:50%;top:50%;transform:translate(-50%,-50%);
  width:48px;height:48px;border-radius:50%;
  background:rgba(255,255,255,.94);
  display:flex;align-items:center;justify-content:center;
  box-shadow:0 8px 24px rgba(21,11,51,.3);
}
.clip-play svg{width:18px;height:18px;fill:var(--brand-600);margin-left:3px;}
.clip-time{
  position:absolute;right:12px;bottom:12px;
  background:rgba(21,11,51,.72);color:#fff;
  font-size:12px;font-variant-numeric:tabular-nums;
  padding:3px 9px;border-radius:8px;
}
.clip-body{padding:16px 18px 18px;}
.clip-badge{
  display:inline-flex;align-items:center;gap:5px;
  background:var(--warm-400);color:var(--brand-900);
  font-size:12px;font-weight:700;
  padding:3px 10px;border-radius:999px;
  margin-bottom:10px;
}
.clip-title{font-size:15.5px;font-weight:700;line-height:1.5;color:var(--ink);}
.clip-tag{font-size:13px;color:var(--ink-3);margin-top:8px;}

/* ============ 种草清单 ============ */
.pick-layout{display:grid;grid-template-columns:minmax(0,1.6fr) minmax(0,1fr);gap:32px;align-items:start;}
.pick-list{background:var(--card);border:1px solid var(--line);border-radius:var(--r-lg);box-shadow:var(--shadow-1);overflow:hidden;}
.pick-row{
  display:flex;align-items:center;gap:18px;
  padding:18px 24px;
  min-height:88px;
  border-bottom:1px dashed var(--line);
  transition:background .2s ease;
}
.pick-row:last-child{border-bottom:0;}
.pick-row:hover{background:#F3EFFF;}
.pick-num{
  width:30px;flex-shrink:0;
  font-size:19px;font-weight:800;font-variant-numeric:tabular-nums;
  color:var(--brand-300);
}
.pick-thumb{
  width:64px;height:64px;flex-shrink:0;border-radius:var(--r-sm);overflow:hidden;background:var(--grad-deep);
}
.pick-thumb img{width:100%;height:100%;}
.pick-main{flex:1;min-width:0;}
.pick-main h3{font-size:16.5px;font-weight:700;line-height:1.5;}
.pick-main p{font-size:13.5px;color:var(--ink-3);margin-top:5px;line-height:1.6;
  display:-webkit-box;-webkit-line-clamp:1;-webkit-box-orient:vertical;overflow:hidden;}
.pick-side{
  background:var(--grad-deep);
  border-radius:var(--r-lg);
  padding:28px;
  color:#fff;
  position:sticky;top:120px;
  box-shadow:var(--shadow-1);
}
.pick-side h3{font-size:19px;font-weight:700;margin-bottom:8px;}
.pick-side .side-note{font-size:13.5px;color:rgba(255,255,255,.66);line-height:1.7;}
.side-stats{display:flex;flex-direction:column;gap:14px;margin-top:22px;}
.side-stat{
  display:flex;align-items:center;justify-content:space-between;
  border:1px solid var(--line-deep);
  border-radius:var(--r-sm);
  padding:12px 16px;
  background:rgba(255,255,255,.05);
}
.side-stat span{font-size:13.5px;color:rgba(255,255,255,.78);}
.side-stat b{font-size:18px;font-variant-numeric:tabular-nums;color:var(--warm-400);}
.pick-side .btn{margin-top:24px;}

/* ============ 频道入口 ============ */
.channel-grid{display:grid;grid-template-columns:repeat(12,1fr);gap:24px;}
.channel-card{
  position:relative;
  border-radius:var(--r-lg);
  overflow:hidden;
  background:var(--card);
  border:1px solid var(--line);
  box-shadow:var(--shadow-1);
  display:flex;flex-direction:column;
  transition:transform .22s ease,box-shadow .22s ease,border-color .22s ease;
}
.channel-card:hover{transform:translateY(-4px);box-shadow:var(--shadow-2);border-color:var(--brand-300);}
.channel-card::before{
  content:"";position:absolute;top:0;left:0;right:0;height:4px;background:var(--grad);
}
.channel-card.span-7{grid-column:span 7;}
.channel-card.span-5{grid-column:span 5;}
.channel-thumb{aspect-ratio:16/9;overflow:hidden;background:var(--grad-deep);}
.channel-thumb img{width:100%;height:100%;transition:transform .4s ease;}
.channel-card:hover .channel-thumb img{transform:scale(1.04);}
.channel-body{padding:24px;display:flex;flex-direction:column;gap:12px;flex:1;}
.channel-body h3{font-size:20px;font-weight:700;line-height:1.45;}
.channel-body .channel-desc{font-size:14.5px;color:var(--ink-2);line-height:1.8;}
.channel-tags{display:flex;flex-wrap:wrap;gap:8px;margin-top:auto;}
.tag{
  font-size:12.5px;color:var(--brand-700);
  background:var(--bg-soft);
  border:1px solid var(--line);
  border-radius:999px;
  padding:4px 12px;
  transition:all .2s ease;
}
.tag:hover{border-color:var(--brand-300);background:#fff;}
.channel-go{
  display:inline-flex;align-items:center;gap:6px;
  font-size:14px;font-weight:700;color:var(--brand-600);
  margin-top:6px;
}
.channel-go::after{content:"→";transition:transform .2s ease;}
.channel-card:hover .channel-go::after{transform:translateX(4px);}

/* ============ 最新信息 ============ */
.news-wrap{background:#fff;border-top:1px solid var(--line);border-bottom:1px solid var(--line);}
.news-list{display:grid;grid-template-columns:repeat(2,minmax(0,1fr));gap:0 32px;}
.news-item{border-bottom:1px dashed var(--line);}
.news-link{display:block;padding:24px 0;}
.news-link h3{
  font-size:17.5px;font-weight:700;line-height:1.55;color:var(--ink);
  transition:color .2s ease;
}
.news-link:hover h3{color:var(--brand-600);}
.news-summary{
  font-size:14px;color:var(--ink-3);line-height:1.75;margin-top:10px;
  display:-webkit-box;-webkit-line-clamp:2;-webkit-box-orient:vertical;overflow:hidden;
}
.news-meta{display:flex;align-items:center;gap:14px;margin-top:14px;font-size:13px;color:var(--ink-3);}
.news-meta .tag{font-size:12px;}
.news-meta .arrow{margin-left:auto;color:var(--brand-500);font-weight:700;}
.empty-state{
  text-align:center;
  padding:64px 24px;
  border:1px dashed var(--line);
  border-radius:var(--r-lg);
  background:var(--bg);
}
.empty-icon{
  width:56px;height:56px;margin:0 auto 18px;border-radius:var(--r-sm);
  background:var(--grad);
  display:flex;align-items:center;justify-content:center;
  color:#fff;font-size:24px;font-weight:800;
}
.empty-state p{font-size:15px;color:var(--ink-2);margin-bottom:20px;}

/* ============ 口碑 ============ */
.review-card{
  flex:0 0 280px;
  scroll-snap-align:start;
  background:var(--card);
  border:1px solid var(--line);
  border-radius:var(--r-md);
  padding:22px;
  box-shadow:var(--shadow-1);
  transition:transform .22s ease,box-shadow .22s ease,border-color .22s ease;
}
.review-card:hover{transform:translateY(-4px);box-shadow:var(--shadow-2);border-color:var(--brand-300);}
.review-head{display:flex;align-items:center;gap:12px;}
.avatar{
  width:40px;height:40px;border-radius:50%;flex-shrink:0;
  background:var(--grad);
  display:flex;align-items:center;justify-content:center;
  color:#fff;font-weight:700;font-size:16px;
}
.review-name{font-size:14.5px;font-weight:700;}
.review-star{font-size:12.5px;color:var(--brand-500);letter-spacing:2px;}
.review-text{font-size:14px;color:var(--ink-2);line-height:1.8;margin-top:14px;
  display:-webkit-box;-webkit-line-clamp:3;-webkit-box-orient:vertical;overflow:hidden;}
.review-time{font-size:12.5px;color:var(--ink-3);margin-top:14px;}

/* ============ CTA ============ */
.cta-band{
  background:var(--grad);
  border-radius:var(--r-lg);
  padding:36px 40px;
  display:flex;align-items:center;justify-content:space-between;gap:28px;
  color:#fff;
  box-shadow:0 20px 50px rgba(109,40,217,.24);
  position:relative;
  overflow:hidden;
}
.cta-band::after{
  content:"";position:absolute;right:-80px;bottom:-120px;width:320px;height:320px;border-radius:50%;
  background:radial-gradient(circle,rgba(255,255,255,.24),transparent 70%);
}
.cta-band h2{font-size:clamp(20px,2.2vw,26px);font-weight:700;line-height:1.45;position:relative;z-index:2;}
.cta-band p{font-size:14.5px;color:rgba(255,255,255,.86);margin-top:8px;position:relative;z-index:2;}
.cta-band .btn{position:relative;z-index:2;flex-shrink:0;}

/* ============ FAQ ============ */
.faq-list{display:flex;flex-direction:column;gap:12px;max-width:900px;}
.faq-item{
  background:#fff;border:1px solid var(--line);border-radius:var(--r-md);
  overflow:hidden;transition:border-color .2s ease,background .2s ease;
}
.faq-item[open]{border-color:var(--brand-300);background:var(--bg);}
.faq-item summary{
  list-style:none;cursor:pointer;
  display:flex;align-items:center;justify-content:space-between;gap:16px;
  min-height:56px;padding:14px 22px;
  font-size:16px;font-weight:600;color:var(--ink);
}
.faq-item summary::-webkit-details-marker{display:none;}
.faq-mark{
  width:26px;height:26px;flex-shrink:0;border-radius:50%;
  background:var(--bg-soft);color:var(--brand-600);
  display:flex;align-items:center;justify-content:center;
  font-size:16px;font-weight:700;
  transition:transform .25s ease,background .25s ease,color .25s ease;
}
.faq-item[open] .faq-mark{transform:rotate(135deg);background:var(--brand-600);color:#fff;}
.faq-answer{padding:0 22px 20px 24px;font-size:15px;color:var(--ink-2);line-height:1.85;}

/* ============ 页脚 ============ */
.site-footer{background:var(--grad-deep);color:rgba(255,255,255,.78);padding:64px 0 0;margin-top:0;}
.footer-grid{display:grid;grid-template-columns:1.4fr 1fr 1fr 1.2fr;gap:40px;padding-bottom:48px;}
.footer-brand{display:flex;align-items:center;gap:12px;margin-bottom:16px;}
.footer-brand .brand-mark{background:var(--grad);}
.footer-brand-name{font-size:18px;font-weight:800;color:#fff;}
.footer-about{font-size:14px;line-height:1.9;color:rgba(255,255,255,.62);}
.footer-col h4{font-size:15px;font-weight:700;color:#fff;margin-bottom:16px;letter-spacing:.6px;}
.footer-col ul{display:flex;flex-direction:column;gap:10px;}
.footer-col a{font-size:14px;color:rgba(255,255,255,.66);transition:color .2s ease;}
.footer-col a:hover{color:var(--accent-500);}
.footer-contact{font-size:14px;line-height:1.9;color:rgba(255,255,255,.66);}
.footer-contact b{color:#fff;font-weight:600;}
.footer-bottom{
  border-top:1px solid var(--line-deep);
  padding:22px 0;
  display:flex;align-items:center;justify-content:space-between;gap:16px;flex-wrap:wrap;
  font-size:13px;color:rgba(255,255,255,.5);
}
.footer-bottom a{color:rgba(255,255,255,.6);}
.footer-bottom a:hover{color:var(--accent-500);}

/* 移动端底部转化条 */
.mobile-bar{
  position:fixed;left:0;right:0;bottom:0;z-index:90;
  background:var(--grad-deep);
  border-top:1px solid var(--line-deep);
  padding:10px 16px calc(10px + env(safe-area-inset-bottom,0px));
  display:none;align-items:center;gap:12px;
  transform:translateY(120%);
  transition:transform .3s ease;
}
.mobile-bar.is-show{transform:translateY(0);}
.mobile-bar span{color:#fff;font-size:14px;flex:1;font-weight:600;}

/* ============ 响应式 ============ */
@media (min-width:1440px){
  .container{max-width:1280px;}
}
@media (max-width:1024px){
  .hero-inner{grid-template-columns:240px minmax(0,1fr);gap:36px;}
  .hero-copy{transform:none;}
  .pick-layout{grid-template-columns:1fr;}
  .pick-side{position:static;}
  .channel-card.span-7,.channel-card.span-5{grid-column:span 6;}
  .footer-grid{grid-template-columns:1fr 1fr;gap:32px;}
  .search-box input{width:110px;}
}
@media (max-width:900px){
  .hot-chips{display:none;}
  .nav-main{display:none;}
  .nav-toggle{display:flex;}
  .search-box{display:none;}
  .mobile-bar{display:flex;}
}
@media (max-width:768px){
  .container{padding:0 16px;}
  .section{padding:48px 0;}
  .hero{padding:48px 0 64px;}
  .hero-inner{grid-template-columns:1fr;gap:28px;}
  .hero-card{max-width:220px;transform:none;aspect-ratio:9/16;}
  .hero-sub{font-size:15.5px;}
  .rail{padding:6px 16px 18px;margin:0 -16px;}
  .clip-card{flex:0 0 200px;}
  .news-list{grid-template-columns:1fr;}
  .channel-card.span-7,.channel-card.span-5{grid-column:span 12;}
  .cta-band{flex-direction:column;align-items:flex-start;padding:28px 24px;}
  .footer-grid{grid-template-columns:1fr;gap:28px;}
  .footer-bottom{flex-direction:column;align-items:flex-start;}
  .brand-name{font-size:16px;}
  .brand-desc{display:none;}
}
@media (max-width:520px){
  body{font-size:15.5px;}
  .hero h1{font-size:30px;}
  .section-head{margin-bottom:24px;}
  .pick-row{padding:16px;gap:14px;}
  .pick-thumb{width:52px;height:52px;}
  .pick-num{width:22px;font-size:17px;}
  .cta-band h2{font-size:19px;}
  .btn{padding:0 18px;font-size:14.5px;}
  .clip-card{flex:0 0 176px;}
  .review-card{flex:0 0 250px;}
  .footer-grid{padding-bottom:32px;}
}

/* roulang page: article */
:root{
  --brand-900:#2E1065;
  --brand-700:#4C1D95;
  --brand-600:#6D28D9;
  --brand-500:#8B5CF6;
  --brand-300:#C4B5FD;
  --accent-500:#12E0C8;
  --accent-400:#5FF2DF;
  --warm-400:#D9F84C;
  --coral-500:#FF6A4D;
  --ink:#1B1236;
  --ink-2:#584F78;
  --ink-3:#8E86A8;
  --bg:#F7F5FF;
  --bg-deep:#150B33;
  --card:#FFFFFF;
  --line:#E9E4F8;
  --soft:#F3EFFF;
  --grad:linear-gradient(135deg,#6D28D9 0%,#A21CAF 55%,#12E0C8 100%);
  --grad-deep:linear-gradient(160deg,#150B33 0%,#2A1260 100%);
  --r-lg:24px;
  --r-md:18px;
  --r-sm:12px;
  --r-pill:999px;
  --shadow-1:0 6px 20px rgba(76,29,149,.08);
  --shadow-2:0 18px 48px rgba(76,29,149,.16);
  --glow:0 0 24px rgba(18,224,200,.18);
  --container:1200px;
}
*,*::before,*::after{box-sizing:border-box;}
html{-webkit-text-size-adjust:100%;scroll-behavior:smooth;}
body{
  margin:0;
  font-family:"HarmonyOS Sans","PingFang SC","Microsoft YaHei",system-ui,-apple-system,"Segoe UI",sans-serif;
  font-size:16px;
  line-height:1.8;
  color:var(--ink);
  background:var(--bg);
  -webkit-font-smoothing:antialiased;
}
img{max-width:100%;display:block;}
a{color:inherit;text-decoration:none;transition:color .2s ease,border-color .2s ease,background-color .2s ease;}
button,input{font:inherit;color:inherit;}
button{cursor:pointer;border:0;background:none;}
ul,ol{margin:0;padding:0;list-style:none;}
h1,h2,h3,h4,p{margin:0;}
:focus-visible{outline:2px solid var(--accent-500);outline-offset:2px;}
.container{width:100%;max-width:var(--container);margin:0 auto;padding:0 24px;}
.sr-only{position:absolute;width:1px;height:1px;padding:0;margin:-1px;overflow:hidden;clip:rect(0 0 0 0);white-space:nowrap;border:0;}

/* ---------- 按钮 ---------- */
.btn{
  display:inline-flex;align-items:center;justify-content:center;gap:8px;
  min-height:44px;padding:0 22px;border-radius:var(--r-pill);
  font-size:15px;font-weight:600;letter-spacing:.2px;
  transition:transform .2s ease,box-shadow .2s ease,background-color .2s ease,border-color .2s ease,color .2s ease;
  white-space:nowrap;
}
.btn-primary{background:var(--grad);color:#fff;box-shadow:var(--shadow-1);}
.btn-primary:hover{transform:translateY(-2px);box-shadow:var(--shadow-2);color:#fff;}
.btn-primary:active{transform:translateY(1px);}
.btn-ghost{background:#fff;color:var(--brand-600);border:1.5px solid var(--brand-600);}
.btn-ghost:hover{background:var(--soft);transform:translateY(-2px);}
.btn-ghost:active{transform:translateY(1px);}
.btn-soft{background:rgba(255,255,255,.16);color:#fff;border:1.5px solid rgba(255,255,255,.5);}
.btn-soft:hover{background:rgba(255,255,255,.26);transform:translateY(-2px);}
.btn-text{color:var(--accent-500);font-weight:600;padding:0;min-height:auto;border-bottom:1px solid transparent;}
.btn-text:hover{border-bottom-color:var(--accent-500);}
.btn:disabled,.btn[aria-disabled="true"]{opacity:.45;pointer-events:none;}

/* ---------- 头部导航 ---------- */
.site-header{
  position:sticky;top:0;z-index:90;
  background:#fff;border-bottom:1px solid transparent;
  transition:box-shadow .25s ease,border-color .25s ease;
}
.site-header.is-scrolled{border-bottom-color:var(--line);box-shadow:var(--shadow-1);}
.nav-top{display:flex;align-items:center;gap:20px;height:72px;transition:height .25s ease;}
.site-header.is-scrolled .nav-top{height:56px;}
.brand{display:flex;align-items:center;gap:12px;flex-shrink:0;}
.brand-mark{
  width:40px;height:40px;border-radius:14px;background:var(--grad);color:#fff;
  display:flex;align-items:center;justify-content:center;font-weight:800;font-size:18px;
  box-shadow:var(--shadow-1);flex-shrink:0;
}
.brand-text{display:flex;flex-direction:column;line-height:1.25;}
.brand-name{font-size:16px;font-weight:800;letter-spacing:.3px;color:var(--ink);}
.brand-desc{font-size:12px;color:var(--ink-3);}
.hot-chips{
  display:flex;align-items:center;gap:8px;overflow-x:auto;flex:1;
  scrollbar-width:none;-ms-overflow-style:none;
}
.hot-chips::-webkit-scrollbar{display:none;}
.chip{
  flex:0 0 auto;padding:6px 14px;border-radius:var(--r-pill);
  background:var(--soft);color:var(--brand-700);font-size:13px;font-weight:500;
  border:1px solid transparent;transition:background-color .2s ease,color .2s ease,border-color .2s ease;
}
.chip:hover{background:#fff;border-color:var(--brand-300);color:var(--brand-600);}
.nav-tools{display:flex;align-items:center;gap:12px;flex-shrink:0;}
.search-box{
  display:flex;align-items:center;gap:8px;height:44px;padding:0 14px;
  background:var(--bg);border:1.5px solid var(--line);border-radius:var(--r-pill);
  transition:border-color .2s ease,box-shadow .2s ease,background-color .2s ease;
}
.search-box:focus-within{border-color:var(--brand-600);background:#fff;box-shadow:0 0 0 3px rgba(18,224,200,.22);}
.search-box svg{width:18px;height:18px;stroke:var(--ink-3);flex-shrink:0;}
.search-box input{
  border:0;background:transparent;width:170px;font-size:14px;outline:none;color:var(--ink);
}
.search-box input::placeholder{color:var(--ink-3);}
.nav-toggle{
  display:none;width:44px;height:44px;border-radius:var(--r-sm);position:relative;
  border:1.5px solid var(--line);background:#fff;
}
.nav-toggle span,.nav-toggle span::before,.nav-toggle span::after{
  position:absolute;left:50%;width:18px;height:2px;background:var(--brand-700);border-radius:2px;
  transform:translateX(-50%);transition:transform .25s ease,opacity .2s ease;
}
.nav-toggle span{top:50%;margin-top:-1px;}
.nav-toggle span::before,.nav-toggle span::after{content:"";left:0;transform:none;}
.nav-toggle span::before{top:-6px;}
.nav-toggle span::after{top:6px;}
.nav-main{
  display:flex;align-items:center;gap:28px;height:52px;
  border-top:1px solid var(--line);overflow-x:auto;scrollbar-width:none;
}
.nav-main::-webkit-scrollbar{display:none;}
.nav-item{
  position:relative;flex:0 0 auto;font-size:15px;color:var(--ink-2);padding:4px 0;
  transition:color .2s ease;
}
.nav-item::after{
  content:"";position:absolute;left:0;right:0;bottom:-14px;height:3px;border-radius:2px;
  background:var(--grad);opacity:0;transform:scaleX(.4);transition:opacity .2s ease,transform .2s ease;
}
.nav-item:hover{color:var(--brand-600);}
.nav-item.is-active{color:var(--ink);font-weight:700;}
.nav-item.is-active::after{opacity:1;transform:scaleX(1);}

/* ---------- 面包屑 ---------- */
.crumb{padding:28px 0 0;font-size:13px;color:var(--ink-3);}
.crumb ol{display:flex;flex-wrap:wrap;align-items:center;gap:6px;}
.crumb li{display:flex;align-items:center;gap:6px;}
.crumb li+li::before{content:"/";color:var(--ink-3);}
.crumb a:hover{color:var(--brand-600);}
.crumb .current{color:var(--ink-2);max-width:320px;overflow:hidden;text-overflow:ellipsis;white-space:nowrap;}

/* ---------- 文章布局 ---------- */
.article-shell{padding:24px 0 80px;}
.article-layout{display:grid;grid-template-columns:minmax(0,1fr) 300px;gap:56px;align-items:start;}
.article-main{min-width:0;}
.article-head{
  max-width:760px;background:var(--card);border:1px solid var(--line);border-radius:var(--r-lg);
  padding:32px 34px;box-shadow:var(--shadow-1);position:relative;overflow:hidden;
}
.article-head::before{content:"";position:absolute;left:0;top:0;right:0;height:4px;background:var(--grad);}
.head-tags{display:flex;flex-wrap:wrap;gap:10px;margin-bottom:16px;}
.tag{
  display:inline-flex;align-items:center;gap:6px;padding:5px 12px;border-radius:var(--r-sm);
  background:var(--warm-400);color:var(--brand-900);font-size:12px;font-weight:700;
}
.tag-line{background:var(--soft);color:var(--brand-700);font-weight:600;}
.article-head h1{
  font-size:clamp(26px,3vw,34px);line-height:1.35;font-weight:800;letter-spacing:.2px;
  margin-bottom:14px;word-break:break-word;
}
.head-meta{display:flex;flex-wrap:wrap;gap:18px;font-size:13px;color:var(--ink-3);}
.head-meta b{color:var(--ink-2);font-weight:600;}

.article-card{
  max-width:760px;margin-top:24px;background:var(--card);border:1px solid var(--line);
  border-radius:var(--r-lg);padding:34px;box-shadow:var(--shadow-1);
}
.article-body{font-size:17px;line-height:1.9;color:var(--ink);}
.article-body p{margin:0 0 1.1em;}
.article-body h2{
  position:relative;font-size:26px;line-height:1.45;font-weight:700;margin:1.9em 0 .7em;padding-left:18px;
}
.article-body h2::before{
  content:"";position:absolute;left:0;top:.34em;width:6px;height:20px;border-radius:3px;background:var(--grad);
}
.article-body h3{
  position:relative;font-size:20px;line-height:1.5;font-weight:600;margin:1.6em 0 .55em;padding-left:16px;
}
.article-body h3::before{
  content:"";position:absolute;left:0;top:.62em;width:8px;height:8px;border-radius:50%;background:var(--accent-500);
}
.article-body h4{font-size:17px;font-weight:600;margin:1.4em 0 .5em;color:var(--ink-2);}
.article-body a{color:var(--brand-600);border-bottom:1px solid var(--brand-300);}
.article-body a:hover{color:var(--brand-700);border-bottom-color:var(--brand-600);}
.article-body ul,.article-body ol{margin:0 0 1.2em;padding-left:1.35em;}
.article-body ul{list-style:disc;}
.article-body ol{list-style:decimal;}
.article-body li{margin-bottom:.55em;}
.article-body li::marker{color:var(--brand-500);}
.article-body blockquote{
  position:relative;margin:1.4em 0;padding:16px 22px 16px 26px;background:var(--bg);
  border-radius:0 var(--r-sm) var(--r-sm) 0;color:var(--ink-2);
}
.article-body blockquote::before{
  content:"";position:absolute;left:0;top:0;bottom:0;width:4px;border-radius:2px;background:var(--grad);
}
.article-body blockquote p:last-child{margin-bottom:0;}
.article-body img{border-radius:var(--r-sm);margin:1.2em 0 .5em;}
.article-body figure{margin:1.2em 0;}
.article-body figcaption{font-size:13px;color:var(--ink-3);line-height:1.6;}
.article-body pre{
  background:var(--bg-deep);color:#EDE9FE;padding:18px 20px;border-radius:var(--r-sm);
  overflow-x:auto;font-size:14px;line-height:1.75;margin:1.2em 0;
}
.article-body code{font-family:ui-monospace,Menlo,Consolas,"Courier New",monospace;}
.article-body p code,.article-body li code{
  background:var(--soft);color:var(--brand-700);padding:2px 6px;border-radius:6px;font-size:.92em;
}
.article-body table{width:100%;border-collapse:collapse;margin:1.4em 0;font-size:15px;}
.article-body th,.article-body td{border:1px solid var(--line);padding:10px 12px;text-align:left;}
.article-body th{background:var(--soft);color:var(--brand-700);font-weight:600;}
.article-body hr{border:0;border-top:1px dashed var(--line);margin:2em 0;}

.empty-state{
  max-width:760px;margin-top:24px;background:var(--card);border:1px dashed var(--brand-300);
  border-radius:var(--r-lg);padding:56px 32px;text-align:center;
}
.empty-icon{
  width:64px;height:64px;border-radius:20px;background:var(--grad);margin:0 auto 18px;
  display:flex;align-items:center;justify-content:center;color:#fff;font-size:26px;font-weight:800;
}
.empty-state p{color:var(--ink-2);margin-bottom:20px;}

/* ---------- 文末转化卡 ---------- */
.convert-card{
  max-width:760px;margin-top:28px;border-radius:var(--r-lg);padding:32px 34px;
  background:var(--grad);color:#fff;box-shadow:var(--shadow-2);
  display:flex;flex-wrap:wrap;align-items:center;justify-content:space-between;gap:20px;
}
.convert-card h3{font-size:22px;font-weight:700;margin-bottom:8px;}
.convert-card p{font-size:14px;line-height:1.7;color:rgba(255,255,255,.88);max-width:520px;}

/* ---------- 上一篇 / 下一篇条 ---------- */
.prevnext{
  max-width:760px;margin-top:20px;display:grid;grid-template-columns:1fr 1fr;gap:16px;
}
.prevnext a{
  display:flex;flex-direction:column;gap:6px;padding:18px 20px;background:var(--card);
  border:1px solid var(--line);border-radius:var(--r-md);box-shadow:var(--shadow-1);
  transition:transform .2s ease,border-color .2s ease,box-shadow .2s ease;
}
.prevnext a:hover{transform:translateY(-3px);border-color:var(--brand-300);box-shadow:var(--shadow-2);}
.prevnext span{font-size:12px;color:var(--ink-3);}
.prevnext b{font-size:15px;font-weight:600;color:var(--ink);}
.prevnext .align-right{align-items:flex-end;text-align:right;}

/* ---------- 侧栏 ---------- */
.side{position:sticky;top:132px;display:flex;flex-direction:column;gap:20px;}
.side-card{
  background:var(--card);border:1px solid var(--line);border-radius:var(--r-lg);
  padding:22px;box-shadow:var(--shadow-1);
}
.side-card h3{font-size:16px;font-weight:700;margin-bottom:14px;padding-left:12px;position:relative;}
.side-card h3::before{
  content:"";position:absolute;left:0;top:.42em;width:4px;height:14px;border-radius:2px;background:var(--grad);
}
.side-list li+li{border-top:1px dashed var(--line);}
.side-list a{
  display:flex;align-items:center;justify-content:space-between;gap:10px;
  padding:11px 0;font-size:14px;color:var(--ink-2);
}
.side-list a:hover{color:var(--brand-600);}
.side-list a::after{content:"›";color:var(--brand-300);font-size:16px;}
.side-note{font-size:13px;line-height:1.75;color:var(--ink-2);}
.side-note b{color:var(--brand-700);}
.mobile-note{display:none;}

/* ---------- 相关推荐 ---------- */
.recommend{margin-top:64px;}
.sec-head{display:flex;align-items:flex-end;justify-content:space-between;gap:20px;margin-bottom:24px;}
.sec-head h2{font-size:26px;font-weight:700;letter-spacing:.2px;}
.sec-head p{font-size:14px;color:var(--ink-3);margin-top:6px;}
.rec-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:24px;}
.rec-card{
  display:flex;flex-direction:column;background:var(--card);border:1px solid var(--line);
  border-radius:var(--r-lg);overflow:hidden;box-shadow:var(--shadow-1);
  transition:transform .24s ease,border-color .24s ease,box-shadow .24s ease;
}
.rec-card:hover{transform:translateY(-4px);border-color:var(--brand-300);box-shadow:var(--shadow-2);}
.rec-card figure{margin:0;aspect-ratio:16/9;overflow:hidden;background:var(--soft);}
.rec-card figure img{width:100%;height:100%;object-fit:cover;transition:transform .4s ease;}
.rec-card:hover figure img{transform:scale(1.04);}
.rec-body{padding:20px 22px 24px;display:flex;flex-direction:column;gap:10px;flex:1;}
.rec-body h3{font-size:17px;font-weight:700;line-height:1.5;}
.rec-body p{font-size:14px;line-height:1.7;color:var(--ink-2);flex:1;}
.rec-body .btn-text{align-self:flex-start;font-size:14px;}

/* ---------- 页脚 ---------- */
.site-footer{background:var(--grad-deep);color:#D8D2EE;margin-top:20px;padding:64px 0 28px;}
.footer-grid{display:grid;grid-template-columns:1.5fr 1fr 1fr 1.2fr;gap:40px;}
.footer-brand{display:flex;align-items:center;gap:12px;margin-bottom:16px;}
.footer-brand .brand-mark{box-shadow:none;}
.footer-brand-name{font-size:17px;font-weight:800;color:#fff;letter-spacing:.3px;}
.footer-about{font-size:14px;line-height:1.85;color:rgba(216,210,238,.82);max-width:340px;}
.footer-col h4{font-size:15px;font-weight:700;color:#fff;margin-bottom:16px;}
.footer-col ul li+li{margin-top:10px;}
.footer-col a{font-size:14px;color:rgba(216,210,238,.82);}
.footer-col a:hover{color:var(--accent-500);}
.footer-contact{font-size:14px;line-height:2;color:rgba(216,210,238,.82);}
.footer-contact b{color:#fff;font-weight:600;}
.footer-bottom{
  margin-top:44px;padding-top:22px;border-top:1px solid rgba(255,255,255,.12);
  display:flex;flex-wrap:wrap;align-items:center;justify-content:space-between;gap:12px;
  font-size:13px;color:rgba(216,210,238,.72);
}
.footer-bottom a{color:rgba(216,210,238,.72);}
.footer-bottom a:hover{color:var(--accent-500);}

/* ---------- 响应式 ---------- */
@media (min-width:1440px){
  :root{--container:1280px;}
}
@media (max-width:1120px){
  .article-layout{grid-template-columns:1fr;gap:32px;}
  .side{position:static;flex-direction:row;flex-wrap:wrap;}
  .side-card{flex:1 1 260px;}
  .mobile-note{display:block;}
}
@media (max-width:1024px){
  .rec-grid{grid-template-columns:repeat(2,1fr);}
  .footer-grid{grid-template-columns:1fr 1fr;gap:32px;}
}
@media (max-width:920px){
  .hot-chips{display:none;}
  .nav-toggle{display:block;}
  .nav-main{
    position:fixed;left:0;right:0;top:72px;bottom:0;height:auto;
    flex-direction:column;align-items:flex-start;gap:4px;padding:24px;
    background:rgba(21,11,51,.97);border-top:0;overflow-y:auto;
    transform:translateX(100%);transition:transform .3s ease;visibility:hidden;
  }
  .nav-main.is-open{transform:translateX(0);visibility:visible;}
  .nav-item{color:rgba(255,255,255,.86);font-size:16px;padding:14px 0;width:100%;border-bottom:1px solid rgba(255,255,255,.1);}
  .nav-item.is-active{color:#fff;}
  .nav-item::after{bottom:0;}
}
@media (max-width:768px){
  .container{padding:0 16px;}
  .search-box{display:none;}
  .nav-tools .btn-primary{display:none;}
  .article-head{padding:24px 20px;}
  .article-card{padding:22px 18px;}
  .article-body{font-size:16px;line-height:1.85;}
  .article-body h2{font-size:22px;}
  .article-body h3{font-size:18px;}
  .convert-card{padding:26px 20px;}
  .prevnext{grid-template-columns:1fr;}
  .prevnext .align-right{align-items:flex-start;text-align:left;}
  .rec-grid{grid-template-columns:1fr;}
  .footer-grid{grid-template-columns:1fr;gap:28px;}
  .site-footer{padding:48px 0 24px;}
  .sec-head{flex-direction:column;align-items:flex-start;}
}
@media (max-width:520px){
  .brand-desc{display:none;}
  .brand-name{font-size:15px;}
  .nav-top{gap:12px;}
  .crumb{padding-top:20px;}
  .crumb .current{max-width:160px;}
  .article-head h1{font-size:23px;}
  .side{flex-direction:column;}
  .footer-bottom{flex-direction:column;align-items:flex-start;}
}

/* roulang page: category1 */
:root{
  --brand-900:#2E1065;
  --brand-700:#4C1D95;
  --brand-600:#6D28D9;
  --brand-500:#8B5CF6;
  --brand-300:#C4B5FD;
  --accent-500:#12E0C8;
  --accent-400:#5FF2DF;
  --warm-400:#D9F84C;
  --coral-500:#FF6A4D;
  --ink:#1B1236;
  --ink-2:#584F78;
  --ink-3:#8E86A8;
  --bg:#F7F5FF;
  --bg-deep:#150B33;
  --card:#FFFFFF;
  --line:#E9E4F8;
  --grad-main:linear-gradient(135deg,#6D28D9 0%,#A21CAF 55%,#12E0C8 100%);
  --grad-deep:linear-gradient(160deg,#150B33 0%,#2A1260 100%);
  --shadow-1:0 6px 20px rgba(76,29,149,.08);
  --shadow-2:0 18px 48px rgba(76,29,149,.16);
  --glow:0 0 0 1px rgba(18,224,200,.35),0 12px 40px rgba(18,224,200,.18);
  --r-lg:24px;
  --r-md:18px;
  --r-sm:12px;
  --r-pill:999px;
  --sp-1:8px;
  --sp-2:12px;
  --sp-3:16px;
  --sp-4:24px;
  --sp-5:32px;
  --sp-6:48px;
  --sp-7:64px;
  --sp-8:80px;
  --font:"HarmonyOS Sans","PingFang SC","Microsoft YaHei",system-ui,-apple-system,"Segoe UI",sans-serif;
}

*,*::before,*::after{box-sizing:border-box}
html{-webkit-text-size-adjust:100%;scroll-behavior:smooth}
body{
  margin:0;
  font-family:var(--font);
  font-size:17px;
  line-height:1.85;
  color:var(--ink);
  background:var(--bg);
  letter-spacing:.2px;
}
img{max-width:100%;display:block;object-fit:cover}
a{color:inherit;text-decoration:none;transition:color .25s ease,opacity .25s ease}
ul,ol{margin:0;padding:0;list-style:none}
h1,h2,h3,h4{margin:0;line-height:1.35;font-weight:700}
p{margin:0 0 .9em}
button{font-family:inherit;cursor:pointer}
input,button,select,textarea{font-family:inherit;font-size:inherit}
:focus-visible{outline:2px solid var(--accent-500);outline-offset:2px;border-radius:6px}

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

/* ============ HEADER / NAV ============ */
.site-header{
  position:sticky;
  top:0;
  z-index:120;
  background:#fff;
  border-bottom:1px solid var(--line);
  transition:box-shadow .25s ease,padding .25s ease;
}
.site-header.is-scrolled{
  box-shadow:var(--shadow-1);
}
.nav-top{
  display:flex;
  align-items:center;
  gap:var(--sp-4);
  padding:14px 0;
  transition:padding .25s ease;
}
.site-header.is-scrolled .nav-top{padding:8px 0}
.brand{
  display:flex;
  align-items:center;
  gap:12px;
  flex-shrink:0;
}
.brand-mark{
  width:40px;height:40px;
  border-radius:var(--r-sm);
  background:var(--grad-main);
  color:#fff;
  font-size:20px;
  font-weight:800;
  display:flex;align-items:center;justify-content:center;
  flex-shrink:0;
  box-shadow:0 6px 18px rgba(109,40,217,.28);
}
.brand-text{display:flex;flex-direction:column;line-height:1.2}
.brand-name{font-size:17px;font-weight:800;color:var(--ink);letter-spacing:.3px}
.brand-desc{font-size:12px;color:var(--ink-3);margin-top:3px}

.hot-chips{
  display:flex;
  align-items:center;
  gap:8px;
  overflow-x:auto;
  scrollbar-width:none;
  flex:1 1 auto;
  min-width:0;
}
.hot-chips::-webkit-scrollbar{display:none}
.chip{
  flex:0 0 auto;
  font-size:13px;
  padding:6px 14px;
  border-radius:var(--r-pill);
  background:#F3EFFF;
  color:var(--brand-700);
  border:1px solid var(--line);
  white-space:nowrap;
}
.chip:hover{background:var(--brand-600);color:#fff;border-color:var(--brand-600)}

.nav-tools{
  display:flex;
  align-items:center;
  gap:12px;
  flex-shrink:0;
}
.search-box{
  display:flex;
  align-items:center;
  gap:8px;
  height:42px;
  padding:0 14px;
  border:1px solid var(--line);
  border-radius:var(--r-pill);
  background:#FBF9FF;
  transition:border-color .25s ease,box-shadow .25s ease;
}
.search-box:focus-within{
  border-color:var(--brand-600);
  box-shadow:0 0 0 3px rgba(18,224,200,.28);
}
.search-box svg{width:18px;height:18px;stroke:var(--ink-3);fill:none;stroke-width:2;stroke-linecap:round;flex-shrink:0}
.search-box input{
  border:0;background:transparent;outline:none;
  width:170px;font-size:14px;color:var(--ink);
}
.search-box input::placeholder{color:var(--ink-3)}

.btn{
  display:inline-flex;
  align-items:center;
  justify-content:center;
  gap:8px;
  min-height:48px;
  padding:0 26px;
  border-radius:var(--r-pill);
  font-size:15px;
  font-weight:600;
  border:1.5px solid transparent;
  transition:transform .2s ease,box-shadow .25s ease,background .25s ease,color .25s ease,border-color .25s ease;
  white-space:nowrap;
}
.btn:active{transform:translateY(1px)}
.btn-primary{
  background:var(--grad-main);
  color:#fff;
  box-shadow:0 10px 26px rgba(109,40,217,.28);
}
.btn-primary:hover{box-shadow:0 16px 38px rgba(109,40,217,.34);transform:translateY(-2px)}
.btn-ghost{
  background:#fff;
  color:var(--brand-600);
  border-color:var(--brand-600);
}
.btn-ghost:hover{background:#F3EFFF;transform:translateY(-2px)}
.btn-light{
  background:#fff;
  color:var(--brand-700);
}
.btn-light:hover{transform:translateY(-2px);box-shadow:0 12px 30px rgba(21,11,51,.3)}
.btn-sm{min-height:42px;padding:0 20px;font-size:14px}

.nav-toggle{
  display:none;
  width:44px;height:44px;
  border:1px solid var(--line);
  border-radius:var(--r-sm);
  background:#fff;
  position:relative;
}
.nav-toggle span,
.nav-toggle span::before,
.nav-toggle span::after{
  position:absolute;
  left:50%;top:50%;
  width:20px;height:2px;
  background:var(--brand-700);
  border-radius:2px;
  transform:translate(-50%,-50%);
  transition:transform .25s ease,opacity .2s ease;
  content:"";
}
.nav-toggle span::before{transform:translate(-50%,-7px)}
.nav-toggle span::after{transform:translate(-50%,7px)}
.nav-toggle[aria-expanded="true"] span{background:transparent}
.nav-toggle[aria-expanded="true"] span::before{transform:translate(-50%,0) rotate(45deg)}
.nav-toggle[aria-expanded="true"] span::after{transform:translate(-50%,0) rotate(-45deg)}

.nav-main{
  display:flex;
  align-items:center;
  gap:28px;
  overflow-x:auto;
  scrollbar-width:none;
  border-top:1px solid var(--line);
  padding:0;
}
.nav-main::-webkit-scrollbar{display:none}
.nav-item{
  position:relative;
  flex:0 0 auto;
  padding:14px 2px;
  font-size:15px;
  color:var(--ink-2);
  white-space:nowrap;
}
.nav-item::after{
  content:"";
  position:absolute;
  left:0;right:0;bottom:8px;
  height:3px;
  border-radius:3px;
  background:var(--grad-main);
  transform:scaleX(0);
  transform-origin:left;
  transition:transform .25s ease;
}
.nav-item:hover{color:var(--brand-700)}
.nav-item:hover::after{transform:scaleX(1)}
.nav-item.is-active{color:var(--brand-700);font-weight:700}
.nav-item.is-active::after{transform:scaleX(1)}

.mobile-drawer{
  position:fixed;
  inset:0;
  z-index:200;
  background:rgba(21,11,51,.72);
  display:none;
  padding:0;
}
.mobile-drawer.is-open{display:block}
.drawer-inner{
  background:#fff;
  max-width:340px;
  margin-left:auto;
  height:100%;
  padding:26px 22px 96px;
  overflow-y:auto;
  animation:slideIn .28s ease;
}
@keyframes slideIn{from{transform:translateX(24px);opacity:.4}to{transform:translateX(0);opacity:1}}
.drawer-close{
  width:40px;height:40px;
  border-radius:var(--r-sm);
  border:1px solid var(--line);
  background:#fff;
  color:var(--brand-700);
  font-size:18px;
  margin-left:auto;
  display:flex;align-items:center;justify-content:center;
  margin-bottom:18px;
}
.drawer-nav{display:flex;flex-direction:column;gap:4px;margin-bottom:22px}
.drawer-nav a{
  padding:13px 12px;
  border-radius:var(--r-sm);
  font-size:16px;
  color:var(--ink-2);
}
.drawer-nav a:hover,.drawer-nav a.is-active{
  background:#F3EFFF;
  color:var(--brand-700);
  font-weight:600;
}
.drawer-cta{position:fixed;left:22px;right:22px;bottom:20px}
.drawer-cta .btn{width:100%}

/* ============ SECTIONS ============ */
main{display:block}
.section{padding:var(--sp-7) 0}
.section-tight{padding:var(--sp-6) 0}
.section-head{
  display:flex;
  align-items:flex-end;
  justify-content:space-between;
  gap:var(--sp-4);
  margin-bottom:var(--sp-5);
  flex-wrap:wrap;
}
.section-head h2{
  font-size:30px;
  letter-spacing:.3px;
}
.section-head .sub{
  font-size:14px;
  color:var(--ink-3);
  margin:8px 0 0;
}
.eyebrow{
  display:inline-flex;
  align-items:center;
  gap:8px;
  font-size:13px;
  color:var(--brand-600);
  background:#F3EFFF;
  border:1px solid var(--line);
  border-radius:var(--r-pill);
  padding:5px 14px;
  margin-bottom:14px;
}
.eyebrow::before{
  content:"";
  width:8px;height:8px;border-radius:50%;
  background:var(--accent-500);
}

/* ============ HERO ============ */
.page-hero{
  padding:var(--sp-6) 0 var(--sp-7);
  background:
    radial-gradient(900px 420px at 88% -10%,rgba(18,224,200,.16),transparent 65%),
    radial-gradient(760px 400px at 4% 0%,rgba(109,40,217,.12),transparent 60%),
    var(--bg);
}
.hero-grid{
  display:grid;
  grid-template-columns:1.25fr 1fr;
  gap:var(--sp-6);
  align-items:center;
}
.hero-media{
  position:relative;
  border-radius:var(--r-lg);
  overflow:hidden;
  box-shadow:var(--shadow-2);
  background:var(--grad-deep);
  height:320px;
}
.hero-media img{
  width:100%;
  height:320px;
  object-fit:cover;
}
.hero-media::after{
  content:"";
  position:absolute;
  inset:0;
  background:linear-gradient(180deg,rgba(21,11,51,0) 30%,rgba(21,11,51,.75) 100%);
}
.hero-media .media-tag{
  position:absolute;
  left:20px;
  bottom:18px;
  z-index:2;
  color:#fff;
  font-size:14px;
  letter-spacing:.4px;
}
.hero-media .media-badge{
  position:absolute;
  right:18px;
  top:18px;
  z-index:2;
  background:var(--warm-400);
  color:var(--brand-900);
  font-size:12.5px;
  font-weight:700;
  padding:6px 14px;
  border-radius:var(--r-pill);
}
.hero-copy h1{
  font-size:clamp(30px,3.6vw,44px);
  font-weight:800;
  letter-spacing:.4px;
  margin-bottom:16px;
}
.hero-copy .lead{
  font-size:16.5px;
  color:var(--ink-2);
  line-height:1.85;
  margin-bottom:24px;
}
.hero-actions{
  display:flex;
  flex-wrap:wrap;
  gap:14px;
  margin-bottom:24px;
}
.hero-facts{
  display:flex;
  flex-wrap:wrap;
  gap:12px;
}
.fact{
  display:flex;
  align-items:center;
  gap:10px;
  background:#fff;
  border:1px solid var(--line);
  border-radius:var(--r-md);
  padding:12px 18px;
  box-shadow:var(--shadow-1);
}
.fact b{
  font-size:20px;
  font-variant-numeric:tabular-nums;
  color:var(--brand-700);
}
.fact span{font-size:13px;color:var(--ink-3)}

/* ============ 要点横条 ============ */
.bar-list{display:flex;flex-direction:column;gap:16px}
.bar-item{
  display:flex;
  align-items:flex-start;
  gap:20px;
  background:var(--card);
  border:1px solid var(--line);
  border-radius:var(--r-lg);
  padding:22px 24px;
  box-shadow:var(--shadow-1);
  transition:border-color .25s ease,transform .25s ease,box-shadow .25s ease;
}
.bar-item:hover{border-color:var(--brand-300);transform:translateY(-3px);box-shadow:var(--shadow-2)}
.bar-icon{
  width:52px;height:52px;
  flex:0 0 auto;
  border-radius:var(--r-md);
  background:var(--grad-main);
  color:#fff;
  font-size:18px;
  font-weight:800;
  display:flex;align-items:center;justify-content:center;
}
.bar-item h3{font-size:19px;margin-bottom:6px}
.bar-item p{margin:0;font-size:15px;color:var(--ink-2);line-height:1.8}
.bar-meta{
  margin-left:auto;
  flex:0 0 auto;
  align-self:center;
}
.badge{
  display:inline-flex;
  align-items:center;
  gap:6px;
  background:var(--warm-400);
  color:var(--brand-900);
  font-size:12.5px;
  font-weight:700;
  padding:6px 14px;
  border-radius:var(--r-sm);
  font-variant-numeric:tabular-nums;
}
.badge-soft{
  background:#F3EFFF;
  color:var(--brand-700);
  border:1px solid var(--line);
}
.badge::before{
  content:"";
  width:7px;height:7px;
  border-radius:2px;
  background:var(--brand-600);
}
.badge-soft::before{background:var(--accent-500)}

/* ============ 步骤卡 ============ */
.step-grid{
  display:grid;
  grid-template-columns:repeat(4,1fr);
  gap:20px;
}
.step-card{
  position:relative;
  background:var(--card);
  border:1px solid var(--line);
  border-radius:var(--r-lg);
  padding:30px 22px 24px;
  box-shadow:var(--shadow-1);
  overflow:hidden;
  transition:border-color .25s ease,transform .25s ease,box-shadow .25s ease;
}
.step-card::before{
  content:"";
  position:absolute;
  top:0;left:0;right:0;
  height:4px;
  background:var(--grad-main);
}
.step-card:hover{border-color:var(--brand-300);transform:translateY(-4px);box-shadow:var(--shadow-2)}
.step-num{
  width:42px;height:42px;
  border-radius:50%;
  background:var(--grad-main);
  color:#fff;
  font-size:15px;
  font-weight:800;
  display:flex;align-items:center;justify-content:center;
  margin-bottom:18px;
  font-variant-numeric:tabular-nums;
  box-shadow:0 8px 20px rgba(109,40,217,.24);
}
.step-card h3{font-size:18px;margin-bottom:10px}
.step-card p{margin:0;font-size:14.5px;color:var(--ink-2);line-height:1.8}

/* ============ 版本速览 ============ */
.version-wrap{
  display:grid;
  grid-template-columns:1.15fr .85fr;
  gap:24px;
  align-items:start;
}
.panel{
  background:var(--card);
  border:1px solid var(--line);
  border-radius:var(--r-lg);
  padding:28px;
  box-shadow:var(--shadow-1);
}
.panel h3{font-size:21px;margin-bottom:16px}
.check-list{display:flex;flex-direction:column;gap:14px}
.check-list li{
  display:flex;
  gap:14px;
  align-items:flex-start;
  padding-bottom:14px;
  border-bottom:1px dashed var(--line);
}
.check-list li:last-child{border-bottom:0;padding-bottom:0}
.check-list .dot{
  width:22px;height:22px;
  border-radius:50%;
  background:#E8FBF7;
  border:1.5px solid var(--accent-500);
  color:var(--brand-700);
  font-size:12px;
  font-weight:800;
  display:flex;align-items:center;justify-content:center;
  flex-shrink:0;
  margin-top:4px;
}
.check-list b{display:block;font-size:16px;margin-bottom:2px}
.check-list span{font-size:14.5px;color:var(--ink-2);line-height:1.75}
.dark-panel{
  background:var(--grad-deep);
  border:1px solid rgba(255,255,255,.12);
  border-radius:var(--r-lg);
  padding:28px;
  color:#fff;
  box-shadow:var(--glow);
}
.dark-panel h3{font-size:20px;color:#fff;margin-bottom:14px}
.dark-panel p{font-size:14.5px;color:rgba(255,255,255,.72);line-height:1.8}
.dark-panel .mini-list{display:flex;flex-direction:column;gap:12px;margin:18px 0 22px}
.dark-panel .mini-list li{
  display:flex;
  justify-content:space-between;
  gap:12px;
  font-size:14px;
  padding-bottom:12px;
  border-bottom:1px dashed rgba(255,255,255,.14);
}
.dark-panel .mini-list li:last-child{border-bottom:0;padding-bottom:0}
.dark-panel .mini-list b{color:var(--accent-400);font-variant-numeric:tabular-nums}

/* ============ FAQ ============ */
.faq-list{display:flex;flex-direction:column;gap:12px}
.faq-item{
  background:var(--card);
  border:1px solid var(--line);
  border-radius:var(--r-md);
  overflow:hidden;
  transition:border-color .25s ease,background .25s ease;
}
.faq-item summary{
  list-style:none;
  cursor:pointer;
  display:flex;
  align-items:center;
  justify-content:space-between;
  gap:16px;
  min-height:56px;
  padding:14px 24px;
  font-size:16.5px;
  font-weight:600;
  color:var(--ink);
}
.faq-item summary::-webkit-details-marker{display:none}
.faq-item summary::after{
  content:"+";
  font-size:22px;
  font-weight:400;
  color:var(--brand-600);
  line-height:1;
  transition:transform .25s ease;
  flex-shrink:0;
}
.faq-item[open]{
  background:#F7F5FF;
  border-color:var(--brand-300);
}
.faq-item[open] summary::after{content:"−";transform:rotate(180deg)}
.faq-body{
  padding:0 24px 22px 24px;
  font-size:15.5px;
  color:var(--ink-2);
  line-height:1.85;
}
.faq-body p:last-child{margin-bottom:0}

/* ============ 相关频道 ============ */
.channel-grid{
  display:grid;
  grid-template-columns:repeat(3,1fr);
  gap:20px;
}
.channel-card{
  display:block;
  background:var(--card);
  border:1px solid var(--line);
  border-radius:var(--r-lg);
  overflow:hidden;
  box-shadow:var(--shadow-1);
  transition:border-color .25s ease,transform .25s ease,box-shadow .25s ease;
}
.channel-card:hover{border-color:var(--brand-300);transform:translateY(-4px);box-shadow:var(--shadow-2)}
.channel-card .thumb{position:relative;height:160px;background:var(--grad-deep)}
.channel-card .thumb img{width:100%;height:160px}
.channel-card .body{padding:20px 22px 24px}
.channel-card h3{font-size:18px;margin-bottom:8px}
.channel-card p{margin:0;font-size:14.5px;color:var(--ink-2);line-height:1.8}
.channel-card .go{
  display:inline-flex;
  align-items:center;
  gap:6px;
  margin-top:16px;
  font-size:14px;
  color:var(--brand-600);
  font-weight:600;
}
.channel-card:hover .go{color:var(--accent-500)}

/* ============ CTA ============ */
.cta-band{
  border-radius:var(--r-lg);
  background:var(--grad-main);
  padding:36px 40px;
  display:flex;
  align-items:center;
  justify-content:space-between;
  gap:24px;
  color:#fff;
  box-shadow:0 24px 60px rgba(109,40,217,.28);
  position:relative;
  overflow:hidden;
}
.cta-band::after{
  content:"";
  position:absolute;
  right:-60px;top:-80px;
  width:260px;height:260px;
  border-radius:50%;
  background:rgba(255,255,255,.12);
}
.cta-band h2{
  font-size:26px;
  color:#fff;
  margin-bottom:8px;
}
.cta-band p{margin:0;font-size:15px;color:rgba(255,255,255,.86);max-width:620px}
.cta-band .btn{position:relative;z-index:2}

/* ============ FOOTER ============ */
.site-footer{
  margin-top:var(--sp-7);
  background:var(--grad-deep);
  color:rgba(255,255,255,.78);
  padding:var(--sp-7) 0 0;
}
.footer-grid{
  display:grid;
  grid-template-columns:1.5fr 1fr 1fr 1.2fr;
  gap:36px;
  padding-bottom:var(--sp-6);
}
.footer-brand{
  display:flex;
  align-items:center;
  gap:12px;
  margin-bottom:16px;
}
.footer-brand-name{font-size:17px;font-weight:800;color:#fff}
.footer-about{font-size:14px;line-height:1.85;color:rgba(255,255,255,.66);max-width:340px;margin:0}
.footer-col h4{font-size:15px;color:#fff;margin-bottom:16px;font-weight:700}
.footer-col ul{display:flex;flex-direction:column;gap:11px}
.footer-col a{font-size:14px;color:rgba(255,255,255,.7)}
.footer-col a:hover{color:var(--accent-500)}
.footer-contact{font-size:14px;line-height:2;color:rgba(255,255,255,.7);margin:0}
.footer-contact b{color:#fff;font-weight:600}
.footer-bottom{
  border-top:1px solid rgba(255,255,255,.12);
  padding:20px 0 28px;
  display:flex;
  align-items:center;
  justify-content:space-between;
  gap:16px;
  flex-wrap:wrap;
  font-size:13.5px;
  color:rgba(255,255,255,.6);
}
.footer-bottom a{color:rgba(255,255,255,.7)}
.footer-bottom a:hover{color:var(--accent-500)}

/* ============ RESPONSIVE ============ */
@media (max-width:1200px){
  .search-box input{width:130px}
  .step-grid{grid-template-columns:repeat(2,1fr)}
}
@media (max-width:1024px){
  .hero-grid{grid-template-columns:1fr;gap:32px}
  .hero-media,.hero-media img{height:280px}
  .version-wrap{grid-template-columns:1fr}
  .channel-grid{grid-template-columns:1fr 1fr}
  .footer-grid{grid-template-columns:1fr 1fr;gap:28px}
  .search-box{display:none}
}
@media (max-width:768px){
  body{font-size:16px}
  .container{padding:0 16px}
  .section{padding:48px 0}
  .section-head h2{font-size:24px}
  .nav-toggle{display:flex}
  .hot-chips{display:none}
  .nav-tools .btn-primary{display:none}
  .nav-main{gap:20px}
  .nav-item{font-size:14.5px;padding:12px 2px}
  .bar-item{flex-direction:column;gap:14px;padding:20px}
  .bar-meta{margin-left:0}
  .step-grid{grid-template-columns:1fr}
  .channel-grid{grid-template-columns:1fr}
  .cta-band{flex-direction:column;align-items:flex-start;padding:28px 24px}
  .cta-band .btn{width:100%}
  .footer-grid{grid-template-columns:1fr;gap:26px}
  .hero-facts{gap:10px}
  .fact{width:100%}
}
@media (max-width:520px){
  .hero-copy h1{font-size:26px}
  .hero-media,.hero-media img{height:220px}
  .panel,.dark-panel{padding:22px}
  .brand-name{font-size:15.5px}
  .brand-desc{display:none}
  .faq-item summary{font-size:15.5px;padding:12px 18px}
  .faq-body{padding:0 18px 20px}
}
@media (min-width:1440px){
  .container{max-width:1280px}
}

/* roulang page: category2 */
:root{
  --brand-900:#2E1065;
  --brand-700:#4C1D95;
  --brand-600:#6D28D9;
  --brand-500:#8B5CF6;
  --brand-300:#C4B5FD;
  --accent-500:#12E0C8;
  --accent-400:#5FF2DF;
  --warm-400:#D9F84C;
  --coral-500:#FF6A4D;
  --ink:#1B1236;
  --ink-2:#584F78;
  --ink-3:#8E86A8;
  --bg:#F7F5FF;
  --bg-soft:#F3EFFF;
  --bg-deep:#150B33;
  --card:#FFFFFF;
  --line:#E9E4F8;
  --grad:linear-gradient(135deg,#6D28D9 0%,#A21CAF 55%,#12E0C8 100%);
  --grad-deep:linear-gradient(160deg,#150B33 0%,#2A1260 100%);
  --r-lg:24px;
  --r-md:18px;
  --r-sm:12px;
  --shadow-1:0 6px 20px rgba(76,29,149,.08);
  --shadow-2:0 18px 48px rgba(76,29,149,.16);
  --glow:0 0 0 1px rgba(18,224,200,.18),0 12px 36px rgba(18,224,200,.18);
  --font:"HarmonyOS Sans","PingFang SC","Microsoft YaHei",system-ui,-apple-system,"Segoe UI",sans-serif;
}
*,*::before,*::after{box-sizing:border-box}
html{-webkit-text-size-adjust:100%}
body{
  margin:0;
  font-family:var(--font);
  font-size:16px;
  line-height:1.85;
  color:var(--ink);
  background:var(--bg);
  -webkit-font-smoothing:antialiased;
}
img{max-width:100%;display:block;border:0}
a{color:var(--brand-600);text-decoration:none;transition:color .2s ease}
a:hover{color:var(--brand-500)}
ul,ol{margin:0;padding:0;list-style:none}
h1,h2,h3,h4,p{margin:0}
button{font-family:inherit;font-size:inherit;cursor:pointer}
input{font-family:inherit}
:focus-visible{outline:2px solid var(--accent-500);outline-offset:2px;border-radius:6px}
.num{font-variant-numeric:tabular-nums;font-weight:700}

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

/* ---------- 头部导航 ---------- */
.site-header{
  position:sticky;
  top:0;
  z-index:80;
  background:rgba(247,245,255,.96);
  border-bottom:1px solid transparent;
  transition:background .25s ease,box-shadow .25s ease,border-color .25s ease;
}
.site-header.is-compact{background:#fff;border-bottom:1px solid var(--line);box-shadow:var(--shadow-1)}
.nav-top{display:flex;align-items:center;gap:20px;height:72px;transition:height .25s ease}
.site-header.is-compact .nav-top{height:56px}
.brand{display:flex;align-items:center;gap:10px;flex:none}
.brand-mark{
  width:36px;height:36px;border-radius:12px;flex:none;
  background:var(--grad);color:#fff;font-weight:800;font-size:17px;
  display:flex;align-items:center;justify-content:center;
  box-shadow:0 6px 16px rgba(109,40,217,.28);
}
.brand-text{display:flex;flex-direction:column;line-height:1.2}
.brand-name{font-size:16px;font-weight:800;color:var(--ink);letter-spacing:.2px}
.brand-desc{font-size:12px;color:var(--ink-3)}
.hot-chips{display:flex;align-items:center;gap:8px;overflow-x:auto;scrollbar-width:none;flex:1 1 auto;min-width:0}
.hot-chips::-webkit-scrollbar{display:none}
.chip{
  flex:none;font-size:13px;color:var(--brand-700);
  background:#fff;border:1px solid var(--line);
  padding:5px 12px;border-radius:999px;white-space:nowrap;
  transition:border-color .2s ease,color .2s ease,transform .2s ease;
}
.chip:hover{border-color:var(--accent-500);color:var(--brand-600);transform:translateY(-1px)}
.nav-tools{display:flex;align-items:center;gap:12px;flex:none}
.search-box{
  display:flex;align-items:center;gap:8px;
  background:#fff;border:1px solid var(--line);border-radius:999px;
  padding:0 14px;height:40px;width:230px;
  transition:border-color .2s ease,box-shadow .2s ease;
}
.search-box:focus-within{border-color:var(--brand-600);box-shadow:0 0 0 3px rgba(18,224,200,.22)}
.search-box svg{width:16px;height:16px;stroke:var(--ink-3);flex:none}
.search-box input{border:0;outline:0;background:transparent;width:100%;font-size:13px;color:var(--ink)}
.search-box input::placeholder{color:var(--ink-3)}
.btn{
  display:inline-flex;align-items:center;justify-content:center;gap:8px;
  min-height:44px;padding:0 22px;border-radius:999px;
  font-size:15px;font-weight:600;border:1.5px solid transparent;
  transition:transform .2s ease,box-shadow .2s ease,background .2s ease,color .2s ease,border-color .2s ease;
}
.btn-primary{background:var(--grad);color:#fff;box-shadow:0 8px 22px rgba(109,40,217,.22)}
.btn-primary:hover{color:#fff;transform:translateY(-2px);box-shadow:var(--shadow-2)}
.btn-primary:active{transform:translateY(-1px)}
.btn-ghost{background:#fff;color:var(--brand-600);border-color:var(--brand-600)}
.btn-ghost:hover{background:var(--brand-600);color:#fff;transform:translateY(-2px)}
.btn-sm{min-height:40px;padding:0 18px;font-size:14px}
.nav-toggle{
  display:none;width:42px;height:42px;border-radius:12px;
  border:1px solid var(--line);background:#fff;position:relative;flex:none;
}
.nav-toggle span,.nav-toggle span::before,.nav-toggle span::after{
  content:"";position:absolute;left:11px;width:20px;height:2px;border-radius:2px;background:var(--brand-700);
  transition:transform .2s ease;
}
.nav-toggle span{top:20px}
.nav-toggle span::before{top:-6px;left:0}
.nav-toggle span::after{top:6px;left:0}
.nav-main{display:flex;align-items:center;gap:26px;height:46px;overflow-x:auto;scrollbar-width:none}
.nav-main::-webkit-scrollbar{display:none}
.nav-item{
  position:relative;flex:none;font-size:14px;color:var(--ink-2);
  padding:6px 0;white-space:nowrap;transition:color .2s ease;
}
.nav-item::after{
  content:"";position:absolute;left:0;right:0;bottom:0;height:3px;border-radius:3px;
  background:var(--grad);opacity:0;transform:scaleX(.4);transition:opacity .2s ease,transform .2s ease;
}
.nav-item:hover{color:var(--brand-600)}
.nav-item:hover::after{opacity:.5;transform:scaleX(1)}
.nav-item.is-active{color:var(--brand-700);font-weight:700}
.nav-item.is-active::after{opacity:1;transform:scaleX(1)}

/* ---------- 移动端抽屉 ---------- */
.mobile-drawer{
  position:fixed;left:0;right:0;top:72px;bottom:0;z-index:70;
  background:rgba(21,11,51,.97);
  padding:24px;display:none;overflow-y:auto;
}
.mobile-drawer.is-open{display:block}
.mobile-drawer a{
  display:block;color:#fff;font-size:16px;padding:16px 4px;
  border-bottom:1px solid rgba(255,255,255,.12);
}
.mobile-drawer a:hover{color:var(--accent-400)}
.mobile-drawer .drawer-cta{margin-top:24px}
.mobile-drawer .btn{width:100%}
body.drawer-open{overflow:hidden}

/* ---------- 页面标题带 ---------- */
.page-hero{background:var(--grad-deep);color:#fff;position:relative;overflow:hidden}
.page-hero::after{
  content:"";position:absolute;inset:0;pointer-events:none;
  background-image:linear-gradient(rgba(255,255,255,.05) 1px,transparent 1px),linear-gradient(90deg,rgba(255,255,255,.05) 1px,transparent 1px);
  background-size:44px 44px;opacity:.7;
}
.page-hero .container{position:relative;z-index:2;padding-top:56px;padding-bottom:52px}
.breadcrumb{font-size:13px;color:rgba(255,255,255,.62);display:flex;flex-wrap:wrap;gap:6px;margin-bottom:18px}
.breadcrumb a{color:rgba(255,255,255,.78)}
.breadcrumb a:hover{color:var(--accent-400)}
.breadcrumb .sep{color:rgba(255,255,255,.36)}
.page-hero h1{
  font-size:clamp(28px,3.6vw,44px);line-height:1.25;font-weight:800;
  letter-spacing:.2px;max-width:22em;
}
.page-hero .lede{
  margin-top:16px;max-width:44em;color:rgba(255,255,255,.82);font-size:16px;line-height:1.9;
}
.hero-badges{display:flex;flex-wrap:wrap;gap:10px;margin-top:24px}
.badge{
  display:inline-flex;align-items:center;gap:6px;
  background:var(--warm-400);color:var(--brand-900);
  font-size:12.5px;font-weight:700;padding:6px 14px;border-radius:var(--r-sm);
}
.badge i{width:7px;height:7px;border-radius:50%;background:var(--brand-700);display:inline-block}
.badge-ghost{
  display:inline-flex;align-items:center;gap:6px;
  background:rgba(255,255,255,.1);color:#fff;border:1px solid rgba(255,255,255,.2);
  font-size:12.5px;padding:6px 14px;border-radius:var(--r-sm);
}
.filter-row{display:flex;flex-wrap:wrap;gap:10px;margin-top:28px}
.filter-chip{
  font-size:13.5px;color:#EAE4FF;background:rgba(255,255,255,.08);
  border:1px solid rgba(255,255,255,.18);border-radius:999px;padding:7px 16px;
  transition:background .2s ease,color .2s ease,border-color .2s ease;
}
.filter-chip:hover{background:rgba(18,224,200,.16);border-color:var(--accent-500);color:#fff}
.filter-chip.is-on{background:var(--accent-500);border-color:var(--accent-500);color:#08302C;font-weight:700}

/* ---------- 板块 ---------- */
.section{padding:80px 0}
.section.alt{background:#fff}
.section.tight-top{padding-top:52px}
.section-head{display:flex;align-items:flex-end;justify-content:space-between;gap:24px;margin-bottom:32px}
.section-title{font-size:clamp(23px,2.6vw,32px);line-height:1.35;font-weight:700}
.section-title .bar{display:inline-block;width:6px;height:20px;border-radius:4px;background:var(--grad);margin-right:12px;vertical-align:-2px}
.section-desc{margin-top:10px;color:var(--ink-2);font-size:15px;max-width:46em}
.link-more{font-size:14px;font-weight:600;color:var(--brand-600);border-bottom:2px solid transparent;transition:border-color .2s ease}
.link-more:hover{border-color:var(--accent-500)}

/* ---------- 两栏布局 ---------- */
.layout-2col{display:grid;grid-template-columns:minmax(0,1fr) 320px;gap:32px;align-items:start}

/* ---------- 功能列表 ---------- */
.feature-list{display:flex;flex-direction:column;gap:18px}
.feature-item{
  display:grid;grid-template-columns:236px minmax(0,1fr);gap:20px;
  background:var(--card);border:1px solid var(--line);border-radius:var(--r-md);
  padding:20px;box-shadow:var(--shadow-1);
  transition:transform .22s ease,box-shadow .22s ease,border-color .22s ease;
}
.feature-item:hover{transform:translateY(-3px);box-shadow:var(--shadow-2);border-color:var(--brand-300)}
.feature-thumb{
  aspect-ratio:16/9;border-radius:var(--r-sm);overflow:hidden;background:var(--grad);
  position:relative;
}
.feature-thumb img{width:100%;height:100%;object-fit:cover}
.feature-thumb .tag-float{
  position:absolute;left:10px;top:10px;font-size:12px;font-weight:700;
  background:rgba(21,11,51,.72);color:#fff;border-radius:8px;padding:3px 10px;
}
.feature-body h3{font-size:19px;line-height:1.5;font-weight:600;color:var(--ink)}
.feature-body p{margin-top:8px;color:var(--ink-2);font-size:14.5px;line-height:1.85}
.feature-meta{display:flex;flex-wrap:wrap;align-items:center;gap:10px;margin-top:14px}
.tag{
  font-size:12.5px;color:var(--brand-700);background:var(--bg-soft);
  border-radius:999px;padding:4px 12px;
}
.dot-sep{color:var(--ink-3);font-size:12.5px}
.arrow-link{font-size:13.5px;font-weight:600;color:var(--brand-600);margin-left:auto}
.arrow-link:hover{color:var(--accent-500)}

/* ---------- 侧栏 ---------- */
.sticky-card{
  position:sticky;top:120px;
  background:var(--card);border:1px solid var(--line);border-radius:var(--r-lg);
  padding:24px;box-shadow:var(--shadow-1);overflow:hidden;
}
.sticky-card::before{
  content:"";display:block;height:4px;border-radius:4px;background:var(--grad);
  margin:-24px -24px 20px;
}
.sticky-card h3{font-size:17px;font-weight:700}
.sticky-card .sub{font-size:13px;color:var(--ink-3);margin-top:6px}
.stat-list{margin-top:18px;display:flex;flex-direction:column;gap:12px}
.stat-list li{
  display:flex;align-items:baseline;justify-content:space-between;gap:12px;
  padding-bottom:12px;border-bottom:1px dashed var(--line);
}
.stat-list li:last-child{border-bottom:0;padding-bottom:0}
.stat-label{font-size:14px;color:var(--ink-2)}
.stat-value{font-size:16px;font-weight:700;color:var(--brand-700);font-variant-numeric:tabular-nums}
.side-links{margin-top:20px;display:flex;flex-direction:column;gap:10px}
.side-links a{font-size:14px;color:var(--ink-2);display:flex;align-items:center;gap:8px}
.side-links a::before{content:"";width:6px;height:6px;border-radius:50%;background:var(--accent-500);flex:none}
.side-links a:hover{color:var(--brand-600)}

/* ---------- 对比说明卡 ---------- */
.compare{
  background:var(--card);border:1px solid var(--line);border-radius:var(--r-lg);
  box-shadow:var(--shadow-1);overflow:hidden;margin-top:40px;
}
.compare-head{padding:24px 28px 0}
.compare-head h3{font-size:20px;font-weight:700}
.compare-head p{margin-top:8px;color:var(--ink-2);font-size:14.5px}
.compare-grid{display:grid;grid-template-columns:1fr 1fr;gap:0;margin-top:20px}
.compare-col{padding:24px 28px 28px}
.compare-col+.compare-col{border-left:1px solid var(--line)}
.compare-col h4{font-size:16px;font-weight:700;display:flex;align-items:center;gap:8px}
.compare-col h4 .pill{
  font-size:12px;font-weight:700;padding:3px 10px;border-radius:999px;
  background:var(--bg-soft);color:var(--brand-700);
}
.compare-col ul{margin-top:14px;display:flex;flex-direction:column;gap:10px}
.compare-col li{font-size:14.5px;color:var(--ink-2);padding-left:20px;position:relative;line-height:1.8}
.compare-col li::before{
  content:"";position:absolute;left:0;top:11px;width:8px;height:8px;border-radius:50%;
  background:var(--accent-500);
}

/* ---------- FAQ ---------- */
.faq-list{display:flex;flex-direction:column;gap:12px;max-width:880px}
.faq-item{
  background:var(--card);border:1px solid var(--line);border-radius:var(--r-md);
  transition:border-color .2s ease,background .2s ease;
}
.faq-item[open]{border-color:var(--brand-300);background:var(--bg)}
.faq-item summary{
  list-style:none;cursor:pointer;position:relative;
  padding:18px 56px 18px 22px;font-size:16px;font-weight:600;color:var(--ink);
  min-height:56px;display:flex;align-items:center;
}
.faq-item summary::-webkit-details-marker{display:none}
.faq-item summary::after{
  content:"+";position:absolute;right:22px;top:50%;transform:translateY(-50%);
  font-size:20px;font-weight:400;color:var(--brand-600);transition:transform .25s ease;
}
.faq-item[open] summary::after{transform:translateY(-50%) rotate(45deg)}
.faq-item .answer{padding:0 56px 22px 24px;color:var(--ink-2);font-size:15px;line-height:1.9}

/* ---------- 相关频道 ---------- */
.channel-grid{display:grid;grid-template-columns:repeat(3,minmax(0,1fr));gap:24px}
.channel-card{
  background:var(--card);border:1px solid var(--line);border-radius:var(--r-lg);
  padding:24px;box-shadow:var(--shadow-1);display:flex;flex-direction:column;gap:12px;
  transition:transform .22s ease,box-shadow .22s ease,border-color .22s ease;
}
.channel-card:hover{transform:translateY(-4px);box-shadow:var(--shadow-2);border-color:var(--brand-300)}
.channel-card .ico{
  width:44px;height:44px;border-radius:14px;background:var(--grad);
  display:flex;align-items:center;justify-content:center;color:#fff;font-weight:800;font-size:16px;
}
.channel-card h3{font-size:18px;font-weight:600}
.channel-card p{font-size:14px;color:var(--ink-2);line-height:1.8}
.channel-card .go{font-size:13.5px;font-weight:600;color:var(--brand-600);margin-top:auto}

/* ---------- CTA ---------- */
.cta-band{
  background:var(--grad);border-radius:var(--r-lg);color:#fff;
  padding:32px 36px;display:flex;align-items:center;justify-content:space-between;gap:28px;
  box-shadow:var(--shadow-2);position:relative;overflow:hidden;
}
.cta-band::after{
  content:"";position:absolute;right:-60px;top:-60px;width:220px;height:220px;border-radius:50%;
  background:rgba(255,255,255,.12);
}
.cta-band h2{font-size:clamp(20px,2.4vw,26px);font-weight:700;line-height:1.4}
.cta-band p{margin-top:8px;font-size:14.5px;color:rgba(255,255,255,.86);max-width:38em}
.cta-band .btn{background:#fff;color:var(--brand-700);position:relative;z-index:2;flex:none}
.cta-band .btn:hover{background:var(--warm-400);color:var(--brand-900);transform:translateY(-2px)}

/* ---------- 页脚 ---------- */
.site-footer{background:var(--grad-deep);color:rgba(255,255,255,.78);margin-top:96px;padding:64px 0 28px}
.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:16px}
.footer-brand .brand-mark{width:34px;height:34px;font-size:16px}
.footer-brand-name{color:#fff;font-weight:800;font-size:16px}
.footer-about{font-size:14px;line-height:1.9;color:rgba(255,255,255,.62);max-width:32em}
.footer-col h4{color:#fff;font-size:15px;font-weight:700;margin-bottom:16px}
.footer-col ul{display:flex;flex-direction:column;gap:10px}
.footer-col a{color:rgba(255,255,255,.72);font-size:14px}
.footer-col a:hover{color:var(--accent-400)}
.footer-contact{font-size:14px;line-height:2;color:rgba(255,255,255,.62)}
.footer-contact b{color:#fff;font-weight:600}
.footer-bottom{
  margin-top:40px;padding-top:22px;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,.5);
}
.footer-bottom a{color:rgba(255,255,255,.62)}
.footer-bottom a:hover{color:var(--accent-400)}

/* ---------- 移动端底部条 ---------- */
.mobile-cta{
  position:fixed;left:0;right:0;bottom:0;z-index:75;display:none;
  background:#fff;border-top:1px solid var(--line);
  padding:8px 16px calc(8px + env(safe-area-inset-bottom));
  box-shadow:0 -8px 24px rgba(76,29,149,.1);
  transform:translateY(110%);transition:transform .28s ease;
}
.mobile-cta.is-show{transform:translateY(0)}
.mobile-cta .btn{width:100%;min-height:44px}

/* ---------- 响应式 ---------- */
@media (max-width:1180px){
  .search-box{width:180px}
  .hot-chips{display:none}
}
@media (max-width:1024px){
  .layout-2col{grid-template-columns:minmax(0,1fr);gap:28px}
  .sticky-card{position:static}
  .section{padding:64px 0}
  .footer-grid{grid-template-columns:1fr 1fr;gap:32px}
  .channel-grid{grid-template-columns:1fr 1fr}
}
@media (max-width:880px){
  .nav-main{display:none}
  .nav-toggle{display:block}
  .site-header .btn-primary{display:none}
  .search-box{width:100%;max-width:220px}
  .feature-item{grid-template-columns:200px minmax(0,1fr)}
}
@media (max-width:768px){
  .container{padding:0 16px}
  .section{padding:48px 0}
  .page-hero .container{padding-top:36px;padding-bottom:36px}
  .feature-item{grid-template-columns:minmax(0,1fr);padding:16px}
  .feature-thumb{aspect-ratio:16/9}
  .compare-grid{grid-template-columns:1fr}
  .compare-col+.compare-col{border-left:0;border-top:1px solid var(--line)}
  .cta-band{flex-direction:column;align-items:flex-start;padding:26px 22px}
  .cta-band .btn{width:100%}
  .channel-grid{grid-template-columns:1fr}
  .footer-grid{grid-template-columns:1fr;gap:28px}
  .site-footer{padding:48px 0 24px;margin-top:64px}
  .mobile-cta{display:block}
  body{padding-bottom:76px}
  .section-head{flex-direction:column;align-items:flex-start;gap:12px}
  .faq-item summary{padding:16px 50px 16px 18px;font-size:15.5px}
  .faq-item .answer{padding:0 20px 20px 20px}
}
@media (max-width:520px){
  body{font-size:15.5px}
  .brand-desc{display:none}
  .search-box{display:none}
  .page-hero h1{font-size:26px}
  .nav-top{height:64px;gap:12px}
  .mobile-drawer{top:64px}
  .feature-body h3{font-size:17.5px}
}

/* roulang page: category3 */
:root{
  --brand-900:#2E1065;
  --brand-700:#4C1D95;
  --brand-600:#6D28D9;
  --brand-500:#8B5CF6;
  --brand-300:#C4B5FD;
  --accent-500:#12E0C8;
  --accent-400:#5FF2DF;
  --warm-400:#D9F84C;
  --coral-500:#FF6A4D;
  --ink:#1B1236;
  --ink-2:#584F78;
  --ink-3:#8E86A8;
  --bg:#F7F5FF;
  --bg-soft:#F3EFFF;
  --bg-deep:#150B33;
  --card:#FFFFFF;
  --line:#E9E4F8;
  --line-deep:rgba(255,255,255,.12);
  --grad-brand:linear-gradient(135deg,#6D28D9 0%,#A21CAF 55%,#12E0C8 100%);
  --grad-deep:linear-gradient(160deg,#150B33 0%,#2A1260 100%);
  --shadow-1:0 6px 20px rgba(76,29,149,.08);
  --shadow-2:0 18px 48px rgba(76,29,149,.16);
  --glow-accent:0 0 0 1px rgba(18,224,200,.18),0 12px 36px rgba(18,224,200,.18);
  --r-lg:24px;
  --r-md:18px;
  --r-sm:12px;
  --r-pill:999px;
  --sp-1:8px;
  --sp-2:12px;
  --sp-3:16px;
  --sp-4:24px;
  --sp-5:32px;
  --sp-6:48px;
  --sp-7:64px;
  --sp-8:80px;
  --font:"HarmonyOS Sans","PingFang SC","Microsoft YaHei",system-ui,-apple-system,"Segoe UI",sans-serif;
}
*,*::before,*::after{box-sizing:border-box;}
html{-webkit-text-size-adjust:100%;scroll-behavior:smooth;}
body{
  margin:0;
  font-family:var(--font);
  font-size:16px;
  line-height:1.85;
  color:var(--ink);
  background:var(--bg);
  letter-spacing:.2px;
}
img{max-width:100%;display:block;object-fit:cover;}
a{color:inherit;text-decoration:none;transition:color .2s ease,border-color .2s ease,background .2s ease;}
ul,ol{margin:0;padding:0;list-style:none;}
h1,h2,h3,h4,p{margin:0;}
button{font-family:inherit;font-size:inherit;cursor:pointer;border:0;background:none;color:inherit;}
input{font-family:inherit;font-size:inherit;}
:focus-visible{outline:2px solid var(--accent-500);outline-offset:2px;border-radius:6px;}
::selection{background:var(--brand-300);color:var(--brand-900);}

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

/* ============ HEADER / NAV ============ */
.site-header{
  position:sticky;
  top:0;
  z-index:60;
  background:rgba(255,255,255,.96);
  border-bottom:1px solid transparent;
  transition:box-shadow .25s ease,border-color .25s ease,padding .25s ease;
}
.site-header.is-stuck{
  border-bottom-color:var(--line);
  box-shadow:var(--shadow-1);
}
.nav-top{
  display:flex;
  align-items:center;
  gap:var(--sp-4);
  padding:14px 0 12px;
  transition:padding .25s ease;
}
.site-header.is-stuck .nav-top{padding:8px 0 6px;}
.brand{
  display:flex;
  align-items:center;
  gap:var(--sp-2);
  flex-shrink:0;
}
.brand-mark{
  width:42px;
  height:42px;
  border-radius:var(--r-sm);
  background:var(--grad-brand);
  color:#fff;
  font-weight:800;
  font-size:20px;
  display:flex;
  align-items:center;
  justify-content:center;
  box-shadow:var(--shadow-1);
  transition:transform .2s ease;
}
.brand:hover .brand-mark{transform:translateY(-2px);}
.brand-text{display:flex;flex-direction:column;line-height:1.25;}
.brand-name{font-size:17px;font-weight:800;letter-spacing:.4px;}
.brand-desc{font-size:12px;color:var(--ink-3);}
.hot-chips{
  display:flex;
  align-items:center;
  gap:var(--sp-1);
  overflow-x:auto;
  scrollbar-width:none;
  flex:1 1 auto;
  min-width:0;
  padding:4px 0;
}
.hot-chips::-webkit-scrollbar{display:none;}
.chip{
  flex:0 0 auto;
  padding:6px 14px;
  border-radius:var(--r-pill);
  background:var(--bg-soft);
  border:1px solid var(--line);
  font-size:13px;
  color:var(--ink-2);
  white-space:nowrap;
}
.chip:hover{
  color:var(--brand-700);
  border-color:var(--brand-300);
  background:#fff;
  box-shadow:var(--shadow-1);
}
.nav-tools{
  display:flex;
  align-items:center;
  gap:var(--sp-2);
  flex-shrink:0;
}
.search-box{
  display:flex;
  align-items:center;
  gap:var(--sp-1);
  height:44px;
  padding:0 14px;
  border-radius:var(--r-pill);
  background:var(--bg);
  border:1.5px solid var(--line);
  transition:border-color .2s ease,box-shadow .2s ease;
}
.search-box:focus-within{
  border-color:var(--brand-600);
  box-shadow:0 0 0 3px rgba(18,224,200,.22);
}
.search-box svg{width:17px;height:17px;stroke:var(--ink-3);flex-shrink:0;}
.search-box input{
  width:150px;
  border:0;
  background:transparent;
  outline:none;
  font-size:14px;
  color:var(--ink);
}
.search-box input::placeholder{color:var(--ink-3);}
.btn{
  display:inline-flex;
  align-items:center;
  justify-content:center;
  gap:6px;
  min-height:44px;
  padding:0 22px;
  border-radius:var(--r-pill);
  font-size:15px;
  font-weight:600;
  white-space:nowrap;
  transition:transform .18s ease,box-shadow .18s ease,background .18s ease,color .18s ease,border-color .18s ease;
}
.btn-primary{
  background:var(--grad-brand);
  color:#fff;
  box-shadow:0 8px 22px rgba(109,40,217,.26);
}
.btn-primary:hover{transform:translateY(-2px);box-shadow:0 14px 34px rgba(109,40,217,.32);}
.btn-primary:active{transform:translateY(0);}
.btn-ghost{
  background:#fff;
  color:var(--brand-700);
  border:1.5px solid var(--brand-600);
}
.btn-ghost:hover{background:var(--bg-soft);transform:translateY(-2px);box-shadow:var(--shadow-1);}
.btn-light{
  background:#fff;
  color:var(--brand-700);
}
.btn-light:hover{transform:translateY(-2px);box-shadow:0 12px 30px rgba(21,11,51,.22);}
.btn-sm{min-height:40px;padding:0 16px;font-size:14px;}
.btn[disabled]{opacity:.45;pointer-events:none;}
.nav-toggle{
  display:none;
  width:44px;
  height:44px;
  border-radius:var(--r-sm);
  border:1.5px solid var(--line);
  align-items:center;
  justify-content:center;
}
.nav-toggle span{
  display:block;
  width:18px;
  height:2px;
  background:var(--ink);
  position:relative;
}
.nav-toggle span::before,.nav-toggle span::after{
  content:"";
  position:absolute;
  left:0;
  width:18px;
  height:2px;
  background:var(--ink);
}
.nav-toggle span::before{top:-6px;}
.nav-toggle span::after{top:6px;}

.nav-main{
  display:flex;
  align-items:center;
  gap:var(--sp-4);
  overflow-x:auto;
  scrollbar-width:none;
  padding:0 0 10px;
}
.nav-main::-webkit-scrollbar{display:none;}
.nav-item{
  position:relative;
  padding:6px 2px 10px;
  font-size:15px;
  color:var(--ink-2);
  white-space:nowrap;
}
.nav-item::after{
  content:"";
  position:absolute;
  left:0;
  right:0;
  bottom:2px;
  height:3px;
  border-radius:3px;
  background:var(--grad-brand);
  transform:scaleX(0);
  transform-origin:center;
  transition:transform .22s ease;
}
.nav-item:hover{color:var(--brand-700);}
.nav-item:hover::after{transform:scaleX(1);}
.nav-item.is-active{color:var(--brand-900);font-weight:700;}
.nav-item.is-active::after{transform:scaleX(1);}

/* 移动抽屉 */
.drawer-mask{
  position:fixed;
  inset:0;
  background:rgba(21,11,51,.72);
  opacity:0;
  visibility:hidden;
  transition:opacity .25s ease,visibility .25s ease;
  z-index:70;
}
.drawer-mask.is-open{opacity:1;visibility:visible;}
.drawer{
  position:fixed;
  top:0;right:0;
  width:min(320px,84vw);
  height:100%;
  background:#fff;
  z-index:80;
  padding:var(--sp-4);
  transform:translateX(102%);
  transition:transform .3s ease;
  display:flex;
  flex-direction:column;
  gap:var(--sp-3);
  overflow-y:auto;
}
.drawer.is-open{transform:translateX(0);}
.drawer-title{font-size:13px;color:var(--ink-3);}
.drawer a.drawer-link{
  padding:14px 16px;
  border-radius:var(--r-sm);
  background:var(--bg);
  font-size:15px;
  font-weight:600;
  color:var(--ink-2);
}
.drawer a.drawer-link.is-active{background:var(--grad-brand);color:#fff;}
.drawer-close{
  align-self:flex-end;
  font-size:13px;
  color:var(--ink-3);
  padding:6px 10px;
  border-radius:var(--r-pill);
  border:1px solid var(--line);
}

/* ============ HERO ============ */
.hero{
  position:relative;
  overflow:hidden;
  background:var(--grad-deep);
  color:#fff;
  padding:var(--sp-7) 0 var(--sp-6);
}
.hero::before{
  content:"";
  position:absolute;
  inset:0;
  background-image:radial-gradient(rgba(255,255,255,.09) 1px,transparent 1px);
  background-size:22px 22px;
  opacity:.7;
  pointer-events:none;
}
.hero-inner{
  position:relative;
  display:grid;
  grid-template-columns:200px minmax(0,1fr);
  gap:var(--sp-6);
  align-items:center;
}
.hero-portrait{
  position:relative;
  width:200px;
  aspect-ratio:9/16;
  border-radius:var(--r-lg);
  overflow:hidden;
  box-shadow:0 24px 60px rgba(0,0,0,.4);
  border:1px solid var(--line-deep);
}
.hero-portrait img{width:100%;height:100%;}
.hero-portrait::after{
  content:"";
  position:absolute;
  inset:0;
  background:linear-gradient(to top,rgba(21,11,51,.82) 0%,rgba(21,11,51,0) 62%);
}
.hero-portrait-tag{
  position:absolute;
  top:12px;right:12px;
  z-index:2;
  padding:4px 10px;
  border-radius:var(--r-sm);
  background:var(--warm-400);
  color:var(--brand-900);
  font-size:12px;
  font-weight:700;
}
.hero-portrait-note{
  position:absolute;
  left:14px;bottom:14px;
  z-index:2;
  font-size:13px;
  line-height:1.5;
  max-width:80%;
  color:#fff;
}
.eyebrow{
  display:inline-flex;
  align-items:center;
  gap:8px;
  padding:6px 14px;
  border-radius:var(--r-pill);
  background:rgba(255,255,255,.1);
  border:1px solid var(--line-deep);
  font-size:13px;
  color:var(--accent-400);
}
.eyebrow i{
  width:7px;height:7px;border-radius:50%;
  background:var(--accent-500);
  display:inline-block;
}
.hero h1{
  margin:var(--sp-3) 0 var(--sp-3);
  font-size:clamp(30px,4vw,50px);
  line-height:1.2;
  font-weight:800;
  letter-spacing:.5px;
}
.hero h1 em{
  font-style:normal;
  background:var(--grad-brand);
  -webkit-background-clip:text;
  background-clip:text;
  color:transparent;
  display:inline-block;
  padding-right:4px;
}
.hero-sub{
  max-width:640px;
  font-size:16px;
  line-height:1.9;
  color:rgba(255,255,255,.82);
}
.hero-actions{
  display:flex;
  flex-wrap:wrap;
  gap:var(--sp-2);
  margin:var(--sp-5) 0 var(--sp-4);
}
.hero-metrics{
  display:flex;
  flex-wrap:wrap;
  gap:var(--sp-2);
}
.badge{
  display:inline-flex;
  align-items:center;
  gap:6px;
  padding:6px 12px;
  border-radius:var(--r-sm);
  background:var(--warm-400);
  color:var(--brand-900);
  font-size:12.5px;
  font-weight:700;
  font-variant-numeric:tabular-nums;
}
.badge-outline{
  background:rgba(255,255,255,.08);
  border:1px solid var(--line-deep);
  color:var(--accent-400);
  font-weight:600;
}
.badge-dot{
  width:7px;height:7px;border-radius:50%;
  background:var(--brand-900);
  opacity:.65;
}

/* ============ SECTION 通用 ============ */
.section{padding:var(--sp-8) 0;}
.section-tight{padding:var(--sp-6) 0;}
.section-head{
  display:flex;
  align-items:flex-end;
  justify-content:space-between;
  gap:var(--sp-4);
  margin-bottom:var(--sp-5);
  flex-wrap:wrap;
}
.section-head h2{
  font-size:clamp(24px,2.4vw,32px);
  line-height:1.35;
  font-weight:700;
}
.section-head p{
  margin-top:8px;
  color:var(--ink-2);
  font-size:15px;
  max-width:660px;
}
.section-head .link-more{
  font-size:14px;
  font-weight:600;
  color:var(--brand-700);
  border-bottom:2px solid transparent;
  padding-bottom:2px;
}
.section-head .link-more:hover{color:var(--brand-600);border-bottom-color:var(--accent-500);}

/* 要点条 */
.points-strip{
  display:grid;
  grid-template-columns:repeat(3,minmax(0,1fr));
  gap:var(--sp-3);
}
.point-item{
  display:flex;
  gap:var(--sp-2);
  padding:20px;
  background:var(--card);
  border:1px solid var(--line);
  border-radius:var(--r-md);
  box-shadow:var(--shadow-1);
  transition:transform .2s ease,box-shadow .2s ease,border-color .2s ease;
}
.point-item:hover{
  transform:translateY(-3px);
  border-color:var(--brand-300);
  box-shadow:var(--shadow-2);
}
.point-icon{
  flex:0 0 40px;
  width:40px;height:40px;
  border-radius:var(--r-sm);
  background:var(--grad-brand);
  color:#fff;
  font-weight:800;
  font-size:15px;
  display:flex;
  align-items:center;
  justify-content:center;
}
.point-item h3{font-size:16px;font-weight:700;margin-bottom:4px;}
.point-item p{font-size:14px;color:var(--ink-2);line-height:1.75;}

/* ============ 时间轴 ============ */
.timeline-wrap{
  position:relative;
  padding-left:34px;
}
.timeline-wrap::before{
  content:"";
  position:absolute;
  left:9px;
  top:8px;
  bottom:8px;
  width:2px;
  background:linear-gradient(180deg,#6D28D9 0%,#A21CAF 55%,#12E0C8 100%);
  border-radius:2px;
}
.timeline-item{
  position:relative;
  padding:0 0 var(--sp-5) 0;
}
.timeline-item:last-child{padding-bottom:0;}
.timeline-node{
  position:absolute;
  left:-34px;
  top:4px;
  width:20px;height:20px;
  border-radius:50%;
  background:#fff;
  border:3px solid var(--brand-600);
  box-shadow:0 0 0 4px rgba(139,92,246,.14);
}
.timeline-item h3{
  font-size:19px;
  font-weight:700;
  margin-bottom:6px;
}
.timeline-item p{
  color:var(--ink-2);
  font-size:15px;
  max-width:760px;
}
.timeline-meta{
  display:flex;
  flex-wrap:wrap;
  gap:8px;
  margin-top:10px;
}
.tag{
  display:inline-flex;
  align-items:center;
  padding:4px 11px;
  border-radius:var(--r-sm);
  background:var(--bg-soft);
  border:1px solid var(--line);
  font-size:12.5px;
  color:var(--brand-700);
}
.tag-accent{
  background:rgba(18,224,200,.14);
  border-color:rgba(18,224,200,.4);
  color:#0B7C6E;
}

/* ============ 技巧卡网格 ============ */
.tips-grid{
  display:grid;
  grid-template-columns:repeat(3,minmax(0,1fr));
  gap:var(--sp-4);
}
.tip-card{
  position:relative;
  background:var(--card);
  border:1px solid var(--line);
  border-radius:var(--r-md);
  overflow:hidden;
  box-shadow:var(--shadow-1);
  display:flex;
  flex-direction:column;
  transition:transform .2s ease,box-shadow .2s ease,border-color .2s ease;
}
.tip-card::before{
  content:"";
  display:block;
  height:4px;
  background:var(--grad-brand);
}
.tip-card:hover{
  transform:translateY(-4px);
  border-color:var(--brand-300);
  box-shadow:var(--shadow-2);
}
.tip-thumb{aspect-ratio:16/9;overflow:hidden;}
.tip-thumb img{width:100%;height:100%;transition:transform .35s ease;}
.tip-card:hover .tip-thumb img{transform:scale(1.04);}
.tip-body{padding:20px;display:flex;flex-direction:column;gap:10px;flex:1;}
.tip-body h3{font-size:17px;font-weight:700;}
.tip-body p{font-size:14px;color:var(--ink-2);line-height:1.78;}
.tip-foot{
  margin-top:auto;
  display:flex;
  align-items:center;
  justify-content:space-between;
  gap:10px;
  padding-top:6px;
}
.tip-foot .arrow{
  font-size:13px;
  font-weight:600;
  color:var(--brand-700);
}
.tip-foot .arrow:hover{color:var(--accent-500);}

/* ============ 提示条 ============ */
.notice-bar{
  display:grid;
  grid-template-columns:auto minmax(0,1fr) auto;
  gap:var(--sp-4);
  align-items:center;
  padding:22px 24px;
  border-radius:var(--r-lg);
  background:var(--bg-soft);
  border:1px solid var(--line);
  border-left:5px solid var(--accent-500);
}
.notice-bar .notice-icon{
  width:44px;height:44px;
  border-radius:var(--r-sm);
  background:var(--grad-brand);
  color:#fff;
  font-weight:800;
  display:flex;align-items:center;justify-content:center;
  font-size:18px;
}
.notice-bar h3{font-size:17px;font-weight:700;margin-bottom:4px;}
.notice-bar p{font-size:14px;color:var(--ink-2);}

/* ============ FAQ ============ */
.faq-list{
  display:flex;
  flex-direction:column;
  gap:var(--sp-2);
  max-width:900px;
}
.faq-item{
  background:var(--card);
  border:1px solid var(--line);
  border-radius:var(--r-md);
  overflow:hidden;
  transition:border-color .2s ease,background .2s ease;
}
.faq-item[open]{
  border-color:var(--brand-300);
  background:var(--bg);
}
.faq-item summary{
  display:flex;
  align-items:center;
  justify-content:space-between;
  gap:var(--sp-3);
  min-height:56px;
  padding:14px 22px;
  font-size:16px;
  font-weight:600;
  cursor:pointer;
  list-style:none;
}
.faq-item summary::-webkit-details-marker{display:none;}
.faq-sign{
  flex:0 0 26px;
  width:26px;height:26px;
  border-radius:50%;
  background:var(--bg-soft);
  color:var(--brand-700);
  font-weight:700;
  display:flex;align-items:center;justify-content:center;
  font-size:15px;
  transition:transform .22s ease,background .22s ease,color .22s ease;
}
.faq-item[open] .faq-sign{
  transform:rotate(45deg);
  background:var(--grad-brand);
  color:#fff;
}
.faq-answer{
  padding:0 24px 20px 46px;
  font-size:15px;
  color:var(--ink-2);
  line-height:1.9;
}

/* ============ CTA ============ */
.cta-band{
  border-radius:var(--r-lg);
  background:var(--grad-brand);
  color:#fff;
  padding:38px 40px;
  display:flex;
  align-items:center;
  justify-content:space-between;
  gap:var(--sp-5);
  box-shadow:0 22px 54px rgba(109,40,217,.28);
  flex-wrap:wrap;
}
.cta-band h2{font-size:clamp(22px,2.2vw,30px);font-weight:800;line-height:1.35;}
.cta-band p{margin-top:8px;font-size:15px;color:rgba(255,255,255,.86);max-width:620px;}

/* ============ 相关频道 ============ */
.channel-grid{
  display:grid;
  grid-template-columns:repeat(3,minmax(0,1fr));
  gap:var(--sp-4);
}
.channel-card{
  background:var(--card);
  border:1px solid var(--line);
  border-radius:var(--r-lg);
  overflow:hidden;
  box-shadow:var(--shadow-1);
  display:flex;
  flex-direction:column;
  transition:transform .2s ease,box-shadow .2s ease,border-color .2s ease;
}
.channel-card:hover{
  transform:translateY(-4px);
  border-color:var(--brand-300);
  box-shadow:var(--shadow-2);
}
.channel-card img{width:100%;aspect-ratio:16/10;}
.channel-body{padding:22px;display:flex;flex-direction:column;gap:10px;flex:1;}
.channel-body h3{font-size:18px;font-weight:700;}
.channel-body p{font-size:14px;color:var(--ink-2);}
.channel-body .arrow{
  margin-top:auto;
  font-size:14px;
  font-weight:600;
  color:var(--brand-700);
}
.channel-card:hover .arrow{color:var(--accent-500);}

/* ============ FOOTER ============ */
.site-footer{
  background:var(--grad-deep);
  color:rgba(255,255,255,.82);
  margin-top:var(--sp-8);
  padding:var(--sp-7) 0 var(--sp-4);
}
.footer-grid{
  display:grid;
  grid-template-columns:1.5fr 1fr 1fr 1.1fr;
  gap:var(--sp-5);
  padding-bottom:var(--sp-5);
  border-bottom:1px solid var(--line-deep);
}
.footer-brand{
  display:flex;
  align-items:center;
  gap:var(--sp-2);
  margin-bottom:var(--sp-3);
}
.footer-brand .brand-mark{background:var(--grad-brand);}
.footer-brand-name{font-size:17px;font-weight:800;color:#fff;}
.footer-about{font-size:14px;line-height:1.9;color:rgba(255,255,255,.7);max-width:380px;}
.footer-col h4{
  font-size:15px;
  font-weight:700;
  color:#fff;
  margin-bottom:var(--sp-3);
}
.footer-col ul{display:flex;flex-direction:column;gap:10px;}
.footer-col li a{font-size:14px;color:rgba(255,255,255,.72);}
.footer-col li a:hover{color:var(--accent-500);}
.footer-contact{font-size:14px;line-height:2;color:rgba(255,255,255,.72);}
.footer-contact b{color:#fff;font-weight:600;}
.footer-bottom{
  display:flex;
  align-items:center;
  justify-content:space-between;
  gap:var(--sp-3);
  padding-top:var(--sp-4);
  font-size:13px;
  color:rgba(255,255,255,.6);
  flex-wrap:wrap;
}
.footer-bottom a{color:rgba(255,255,255,.72);}
.footer-bottom a:hover{color:var(--accent-500);}

/* 移动端底部转化条 */
.mobile-cta{
  position:fixed;
  left:0;right:0;bottom:0;
  z-index:65;
  display:none;
  align-items:center;
  justify-content:space-between;
  gap:12px;
  padding:10px 16px calc(10px + env(safe-area-inset-bottom));
  background:var(--grad-deep);
  border-top:1px solid var(--line-deep);
  transform:translateY(110%);
  transition:transform .28s ease;
}
.mobile-cta.is-show{transform:translateY(0);}
.mobile-cta span{font-size:13px;color:rgba(255,255,255,.85);}

/* ============ 响应式 ============ */
@media (min-width:1440px){
  .container{max-width:1280px;}
}
@media (max-width:1024px){
  .hot-chips{display:none;}
  .hero-inner{grid-template-columns:170px minmax(0,1fr);gap:var(--sp-5);}
  .hero-portrait{width:170px;}
  .points-strip{grid-template-columns:1fr;}
  .tips-grid{grid-template-columns:repeat(2,minmax(0,1fr));}
  .channel-grid{grid-template-columns:repeat(2,minmax(0,1fr));}
  .footer-grid{grid-template-columns:1fr 1fr;}
}
@media (max-width:768px){
  .container{padding:0 16px;}
  .search-box{display:none;}
  .nav-main{display:none;}
  .nav-toggle{display:flex;}
  .mobile-cta{display:flex;}
  .section{padding:var(--sp-6) 0;}
  .section-tight{padding:var(--sp-5) 0;}
  .hero{padding:var(--sp-5) 0;}
  .hero-inner{grid-template-columns:1fr;gap:var(--sp-4);}
  .hero-portrait{width:180px;}
  .cta-band{padding:26px 24px;}
  .cta-band .btn{width:100%;}
  .notice-bar{grid-template-columns:1fr;gap:12px;}
  .tips-grid{grid-template-columns:1fr;}
  .channel-grid{grid-template-columns:1fr;}
  .footer-grid{grid-template-columns:1fr;gap:var(--sp-4);}
  .footer-bottom{flex-direction:column;align-items:flex-start;}
  .timeline-wrap{padding-left:28px;}
  .timeline-node{left:-28px;width:18px;height:18px;}
  .timeline-wrap::before{left:8px;}
  .faq-answer{padding-left:24px;}
  .site-footer{padding-bottom:78px;}
}
@media (max-width:520px){
  body{font-size:15px;}
  .brand-name{font-size:15px;}
  .brand-desc{font-size:11px;}
  .hero h1{font-size:26px;}
  .hero-actions .btn{width:100%;}
  .section-head h2{font-size:22px;}
  .tip-body,.channel-body{padding:18px;}
  .btn{padding:0 16px;font-size:14px;}
}

/* roulang page: category4 */
:root{
  --brand-900:#2E1065;
  --brand-700:#4C1D95;
  --brand-600:#6D28D9;
  --brand-500:#8B5CF6;
  --brand-300:#C4B5FD;
  --accent-500:#12E0C8;
  --accent-400:#5FF2DF;
  --warm-400:#D9F84C;
  --coral-500:#FF6A4D;
  --ink:#1B1236;
  --ink-2:#584F78;
  --ink-3:#8E86A8;
  --bg:#F7F5FF;
  --bg-deep:#150B33;
  --card:#FFFFFF;
  --line:#E9E4F8;
  --grad:linear-gradient(135deg,#6D28D9 0%,#A21CAF 55%,#12E0C8 100%);
  --grad-deep:linear-gradient(160deg,#150B33 0%,#2A1260 100%);
  --shadow-1:0 6px 20px rgba(76,29,149,.08);
  --shadow-2:0 18px 48px rgba(76,29,149,.16);
  --r-lg:24px;
  --r-md:18px;
  --r-sm:12px;
}
*,*::before,*::after{box-sizing:border-box;}
html{-webkit-text-size-adjust:100%;scroll-behavior:smooth;}
body{
  margin:0;
  font-family:"HarmonyOS Sans","PingFang SC","Microsoft YaHei",system-ui,-apple-system,sans-serif;
  font-size:16px;
  line-height:1.85;
  color:var(--ink);
  background:var(--bg);
  letter-spacing:.2px;
}
h1,h2,h3,h4,p,ul,ol,figure{margin:0;}
ul,ol{padding:0;list-style:none;}
img{max-width:100%;display:block;}
a{color:var(--brand-600);text-decoration:none;transition:color .2s ease;}
a:hover{color:var(--brand-500);}
button,input,textarea,select{font:inherit;color:inherit;}
button{cursor:pointer;border:none;background:none;}
:focus-visible{outline:2px solid var(--accent-500);outline-offset:2px;border-radius:6px;}
.container{width:100%;max-width:1200px;margin:0 auto;padding:0 24px;}
.section{padding:72px 0;}
.section-head{margin-bottom:32px;}
.section-head h2{font-size:30px;line-height:1.35;font-weight:700;color:var(--ink);}
.section-head p{margin-top:10px;color:var(--ink-2);font-size:16px;max-width:760px;}
.grad-bar{height:4px;width:56px;border-radius:999px;background:var(--grad);margin-bottom:16px;}

/* ============ 顶部导航 ============ */
.site-header{
  position:sticky;
  top:0;
  z-index:80;
  background:rgba(255,255,255,.97);
  border-bottom:1px solid transparent;
  transition:box-shadow .25s ease,border-color .25s ease;
}
.site-header.is-scrolled{border-color:var(--line);box-shadow:var(--shadow-1);}
.nav-top{display:flex;align-items:center;gap:20px;padding:12px 0;}
.brand{display:flex;align-items:center;gap:12px;flex-shrink:0;}
.brand-mark{
  width:40px;height:40px;border-radius:var(--r-sm);
  background:var(--grad);color:#fff;
  display:flex;align-items:center;justify-content:center;
  font-size:20px;font-weight:800;letter-spacing:0;
  box-shadow:0 6px 18px rgba(109,40,217,.28);
}
.brand-text{display:flex;flex-direction:column;line-height:1.25;}
.brand-name{font-size:17px;font-weight:800;color:var(--ink);letter-spacing:.5px;}
.brand-desc{font-size:12px;color:var(--ink-3);letter-spacing:.4px;}
.hot-chips{display:flex;align-items:center;gap:8px;overflow-x:auto;flex:1;min-width:0;scrollbar-width:none;}
.hot-chips::-webkit-scrollbar{display:none;}
.chip{
  flex:0 0 auto;
  padding:6px 14px;
  border-radius:999px;
  border:1px solid var(--line);
  background:#fff;
  color:var(--ink-2);
  font-size:13px;
  white-space:nowrap;
  transition:all .2s ease;
}
.chip:hover{border-color:var(--accent-500);color:var(--brand-700);background:#F4FEFA;transform:translateY(-1px);}
.nav-tools{display:flex;align-items:center;gap:12px;flex-shrink:0;}
.search-box{
  display:flex;align-items:center;gap:8px;
  height:40px;padding:0 14px;
  border:1px solid var(--line);
  border-radius:999px;
  background:#FAF9FF;
  transition:border-color .2s ease,box-shadow .2s ease;
}
.search-box:focus-within{border-color:var(--brand-600);box-shadow:0 0 0 3px rgba(18,224,200,.22);}
.search-box svg{width:17px;height:17px;stroke:var(--ink-3);flex:0 0 auto;}
.search-box input{
  border:none;background:transparent;outline:none;
  width:180px;font-size:14px;color:var(--ink);
}
.search-box input::placeholder{color:var(--ink-3);}
.btn{
  display:inline-flex;align-items:center;justify-content:center;
  min-height:44px;padding:0 22px;
  border-radius:999px;
  font-size:15px;font-weight:600;
  white-space:nowrap;
  transition:transform .18s ease,box-shadow .22s ease,background .22s ease,color .22s ease,border-color .22s ease;
}
.btn:active{transform:translateY(1px);}
.btn-primary{background:var(--grad);color:#fff;box-shadow:0 8px 22px rgba(109,40,217,.26);}
.btn-primary:hover{color:#fff;transform:translateY(-2px);box-shadow:var(--shadow-2);}
.btn-ghost{background:#fff;color:var(--brand-600);border:1.5px solid var(--brand-600);}
.btn-ghost:hover{background:#F5F1FF;color:var(--brand-700);transform:translateY(-2px);}
.btn-onDark{background:#fff;color:var(--brand-700);}
.btn-onDark:hover{color:var(--brand-900);transform:translateY(-2px);box-shadow:0 14px 30px rgba(0,0,0,.22);}
.btn-block{width:100%;}
.nav-toggle{
  display:none;width:44px;height:44px;border-radius:var(--r-sm);
  border:1px solid var(--line);background:#fff;
  align-items:center;justify-content:center;
}
.nav-toggle span{
  display:block;width:18px;height:2px;border-radius:2px;background:var(--ink);position:relative;
}
.nav-toggle span::before,.nav-toggle span::after{
  content:"";position:absolute;left:0;width:18px;height:2px;border-radius:2px;background:var(--ink);
}
.nav-toggle span::before{top:-6px;}
.nav-toggle span::after{top:6px;}
.nav-main{
  display:flex;align-items:center;gap:4px;
  padding:6px 0 10px;
  overflow-x:auto;scrollbar-width:none;
  border-top:1px dashed var(--line);
}
.nav-main::-webkit-scrollbar{display:none;}
.nav-item{
  position:relative;
  flex:0 0 auto;
  padding:8px 14px;
  font-size:15px;
  color:var(--ink-2);
  border-radius:var(--r-sm);
  white-space:nowrap;
  transition:color .2s ease,background .2s ease;
}
.nav-item:hover{color:var(--brand-700);background:#F5F1FF;}
.nav-item.is-active{color:var(--brand-700);font-weight:700;}
.nav-item.is-active::after{
  content:"";position:absolute;left:14px;right:14px;bottom:0;
  height:3px;border-radius:999px;background:var(--grad);
}

/* ============ 页面标题区 ============ */
.page-head{
  padding:48px 0 40px;
  background:
    radial-gradient(900px 380px at 12% -10%,rgba(18,224,200,.16),transparent 62%),
    linear-gradient(170deg,#F7F5FF 0%,#F1ECFF 100%);
  border-bottom:1px solid var(--line);
}
.breadcrumb{display:flex;flex-wrap:wrap;align-items:center;gap:8px;font-size:13px;color:var(--ink-3);margin-bottom:18px;}
.breadcrumb a{color:var(--ink-2);}
.breadcrumb a:hover{color:var(--brand-600);}
.breadcrumb span[aria-hidden]{color:var(--brand-300);}
.page-head h1{
  font-size:clamp(30px,4vw,46px);
  line-height:1.22;
  font-weight:800;
  color:var(--ink);
  max-width:900px;
  letter-spacing:.4px;
}
.page-head .lead{
  margin-top:18px;
  max-width:820px;
  font-size:17px;
  line-height:1.9;
  color:var(--ink-2);
}
.chip-row{display:flex;flex-wrap:wrap;gap:10px;margin-top:24px;}
.chip-row .chip{cursor:default;}
.chip-row .chip:hover{transform:none;background:#fff;border-color:var(--line);color:var(--ink-2);}
.head-stats{display:flex;flex-wrap:wrap;gap:12px;margin-top:26px;}
.badge{
  display:inline-flex;align-items:center;gap:8px;
  padding:7px 14px;border-radius:var(--r-sm);
  background:var(--warm-400);color:#3B1D82;
  font-size:13px;font-weight:700;
  font-variant-numeric:tabular-nums;
}
.badge .dot{width:7px;height:7px;border-radius:50%;background:#3B1D82;opacity:.55;}

/* ============ 主布局 ============ */
.layout-main{
  display:grid;
  grid-template-columns:minmax(0,1fr) 320px;
  gap:36px;
  align-items:start;
  padding:64px 0 24px;
}
.content-col{min-width:0;display:flex;flex-direction:column;gap:56px;}

/* ============ 问答列表 ============ */
.qa-list{display:flex;flex-direction:column;gap:12px;}
.qa-item{
  background:var(--card);
  border:1px solid var(--line);
  border-radius:var(--r-md);
  box-shadow:var(--shadow-1);
  overflow:hidden;
  transition:border-color .22s ease,box-shadow .22s ease,background .22s ease;
}
.qa-item:hover{border-color:var(--brand-300);}
.qa-item[open]{border-color:var(--brand-300);background:#F7F5FF;box-shadow:var(--shadow-2);}
.qa-item summary{
  position:relative;
  list-style:none;
  cursor:pointer;
  padding:18px 64px 18px 22px;
  min-height:56px;
  display:flex;
  align-items:center;
  font-size:17px;
  font-weight:600;
  color:var(--ink);
  line-height:1.55;
}
.qa-item summary::-webkit-details-marker{display:none;}
.qa-item summary::after{
  content:"+";
  position:absolute;right:20px;top:50%;transform:translateY(-50%);
  width:28px;height:28px;border-radius:50%;
  background:var(--grad);color:#fff;
  display:flex;align-items:center;justify-content:center;
  font-size:17px;font-weight:600;line-height:1;
  transition:transform .25s ease;
}
.qa-item[open] summary::after{content:"−";transform:translateY(-50%) rotate(180deg);}
.qa-body{
  padding:4px 26px 22px 24px;
  margin:0 20px 0 0;
  border-top:1px dashed var(--line);
  padding-top:16px;
  color:var(--ink-2);
  font-size:16px;
  line-height:1.9;
  letter-spacing:0;
}
.qa-body p+p{margin-top:10px;}
.qa-tagline{
  display:inline-block;
  margin-bottom:10px;
  padding:3px 10px;
  border-radius:999px;
  background:rgba(18,224,200,.16);
  color:var(--brand-700);
  font-size:12px;
  letter-spacing:.4px;
}

/* ============ 自查清单 ============ */
.check-card{
  background:var(--card);
  border:1px solid var(--line);
  border-radius:var(--r-lg);
  box-shadow:var(--shadow-1);
  padding:28px 26px;
  position:relative;
  overflow:hidden;
}
.check-card::before{content:"";position:absolute;left:0;top:0;right:0;height:4px;background:var(--grad);}
.check-list{display:flex;flex-direction:column;gap:14px;margin-top:20px;}
.check-list li{
  display:flex;gap:14px;
  padding:14px 16px;
  border-radius:var(--r-sm);
  background:#FAF9FF;
  border:1px solid var(--line);
  color:var(--ink-2);
  font-size:15.5px;
  line-height:1.8;
}
.check-list .num{
  flex:0 0 auto;
  width:28px;height:28px;border-radius:50%;
  background:var(--grad);color:#fff;
  display:flex;align-items:center;justify-content:center;
  font-size:13px;font-weight:700;
  font-variant-numeric:tabular-nums;
}

/* ============ 表单 ============ */
.form-card{
  background:var(--card);
  border:1px solid var(--line);
  border-radius:var(--r-lg);
  box-shadow:var(--shadow-1);
  padding:28px 26px;
}
.field{display:flex;flex-direction:column;gap:8px;margin-bottom:18px;}
.field label{font-size:14px;font-weight:600;color:var(--ink);}
.field input,.field textarea{
  width:100%;
  min-height:48px;
  padding:12px 14px;
  border:1px solid var(--line);
  border-radius:var(--r-sm);
  background:#FBFAFF;
  font-size:15px;
  line-height:1.7;
  outline:none;
  transition:border-color .2s ease,box-shadow .2s ease,background .2s ease;
}
.field textarea{resize:vertical;}
.field input::placeholder,.field textarea::placeholder{color:var(--ink-3);}
.field input:focus,.field textarea:focus{
  border-color:var(--brand-600);
  background:#fff;
  box-shadow:0 0 0 3px rgba(18,224,200,.22);
}
.form-hint{margin-top:12px;font-size:13px;color:var(--ink-3);line-height:1.7;}

/* ============ 侧栏 ============ */
.sidebar{
  position:sticky;
  top:96px;
  display:flex;
  flex-direction:column;
  gap:20px;
}
.side-card{
  background:var(--card);
  border:1px solid var(--line);
  border-radius:var(--r-md);
  box-shadow:var(--shadow-1);
  padding:20px;
}
.side-card h3{font-size:16px;font-weight:700;color:var(--ink);margin-bottom:14px;}
.side-nav{display:flex;flex-direction:column;gap:4px;}
.side-nav a{
  display:flex;align-items:center;justify-content:space-between;
  padding:10px 12px;
  border-radius:var(--r-sm);
  color:var(--ink-2);
  font-size:14.5px;
  transition:background .2s ease,color .2s ease,transform .2s ease;
}
.side-nav a:hover{background:#F3EFFF;color:var(--brand-700);transform:translateX(2px);}
.side-nav a.is-current{background:#F3EFFF;color:var(--brand-700);font-weight:700;}
.side-nav a::after{content:"›";color:var(--brand-300);font-size:16px;}
.hot-list{display:flex;flex-direction:column;gap:12px;}
.hot-item{display:flex;gap:12px;align-items:center;padding:8px;border-radius:var(--r-sm);transition:background .2s ease;}
.hot-item:hover{background:#F3EFFF;}
.hot-item img{width:64px;height:64px;border-radius:var(--r-sm);object-fit:cover;flex:0 0 auto;}
.hot-item b{display:block;font-size:14.5px;color:var(--ink);font-weight:600;line-height:1.5;}
.hot-item span{display:block;font-size:12.5px;color:var(--ink-3);line-height:1.6;margin-top:2px;}
.side-stat li{
  display:flex;align-items:baseline;justify-content:space-between;
  padding:10px 0;
  border-bottom:1px dashed var(--line);
  font-size:14px;
  color:var(--ink-2);
}
.side-stat li:last-child{border-bottom:none;padding-bottom:0;}
.side-stat b{
  font-size:18px;font-weight:800;color:var(--brand-700);
  font-variant-numeric:tabular-nums;
}

/* ============ 相关频道 ============ */
.related-grid{display:grid;grid-template-columns:repeat(3,minmax(0,1fr));gap:20px;}
.channel-card{
  display:flex;flex-direction:column;
  background:var(--card);
  border:1px solid var(--line);
  border-radius:var(--r-md);
  box-shadow:var(--shadow-1);
  overflow:hidden;
  transition:transform .22s ease,box-shadow .22s ease,border-color .22s ease;
}
.channel-card:hover{transform:translateY(-3px);box-shadow:var(--shadow-2);border-color:var(--brand-300);}
.channel-card .thumb{aspect-ratio:16/9;overflow:hidden;}
.channel-card .thumb img{width:100%;height:100%;object-fit:cover;transition:transform .4s ease;}
.channel-card:hover .thumb img{transform:scale(1.04);}
.channel-card .body{padding:20px;display:flex;flex-direction:column;gap:10px;flex:1;}
.channel-card h3{font-size:18px;font-weight:700;color:var(--ink);line-height:1.5;}
.channel-card p{font-size:14.5px;color:var(--ink-2);line-height:1.8;flex:1;}
.link-more{
  display:inline-flex;align-items:center;gap:6px;
  font-size:14px;font-weight:600;color:var(--brand-600);
}
.link-more::after{content:"→";transition:transform .2s ease;}
.channel-card:hover .link-more::after{transform:translateX(3px);}

/* ============ CTA ============ */
.cta-banner{
  margin:64px 0 0;
  border-radius:var(--r-lg);
  background:var(--grad);
  color:#fff;
  padding:36px 32px;
  display:flex;
  align-items:center;
  justify-content:space-between;
  gap:24px;
  box-shadow:0 20px 48px rgba(109,40,217,.28);
}
.cta-banner h2{font-size:26px;font-weight:800;line-height:1.4;}
.cta-banner p{margin-top:8px;font-size:15px;color:rgba(255,255,255,.9);max-width:620px;}
.cta-actions{display:flex;gap:12px;flex-shrink:0;}

/* ============ 页脚 ============ */
.site-footer{
  margin-top:80px;
  background:var(--grad-deep);
  color:rgba(255,255,255,.78);
  padding:64px 0 28px;
}
.footer-grid{
  display:grid;
  grid-template-columns:1.5fr 1fr 1fr 1.2fr;
  gap:36px;
  padding-bottom:36px;
  border-bottom:1px solid rgba(255,255,255,.12);
}
.footer-brand{display:flex;align-items:center;gap:12px;margin-bottom:16px;}
.footer-brand-name{font-size:17px;font-weight:800;color:#fff;}
.footer-about{font-size:14px;line-height:1.9;color:rgba(255,255,255,.7);max-width:360px;}
.footer-col h4{font-size:15px;font-weight:700;color:#fff;margin-bottom:16px;}
.footer-col ul{display:flex;flex-direction:column;gap:10px;}
.footer-col a{font-size:14px;color:rgba(255,255,255,.72);}
.footer-col a:hover{color:var(--accent-500);}
.footer-contact{font-size:14px;line-height:2;color:rgba(255,255,255,.72);}
.footer-contact b{color:#fff;font-weight:600;}
.footer-bottom{
  display:flex;flex-wrap:wrap;gap:12px;
  align-items:center;justify-content:space-between;
  padding-top:22px;
  font-size:13px;
  color:rgba(255,255,255,.6);
}
.footer-bottom a{color:rgba(255,255,255,.7);}
.footer-bottom a:hover{color:var(--accent-500);}

/* ============ 移动端底部条 ============ */
.mobile-bar{
  display:none;
  position:fixed;left:0;right:0;bottom:0;z-index:90;
  padding:8px 16px calc(8px + env(safe-area-inset-bottom));
  background:rgba(255,255,255,.98);
  border-top:1px solid var(--line);
  box-shadow:0 -8px 24px rgba(76,29,149,.12);
  transform:translateY(110%);
  transition:transform .3s ease;
}
.mobile-bar.is-show{transform:translateY(0);}

/* ============ 响应式 ============ */
@media (max-width:1200px){
  .search-box input{width:140px;}
  .layout-main{gap:28px;}
}
@media (max-width:1024px){
  .layout-main{grid-template-columns:minmax(0,1fr);gap:40px;padding-top:48px;}
  .sidebar{position:static;top:auto;}
  .footer-grid{grid-template-columns:1fr 1fr;gap:28px;}
  .related-grid{grid-template-columns:repeat(2,minmax(0,1fr));}
  .cta-banner{flex-direction:column;align-items:flex-start;}
  .cta-actions{width:100%;}
}
@media (max-width:768px){
  .container{padding:0 16px;}
  .section{padding:48px 0;}
  .nav-top{flex-wrap:wrap;gap:12px;padding:10px 0;}
  .brand-desc{display:none;}
  .hot-chips{order:3;width:100%;flex:1 0 100%;padding-bottom:4px;}
  .nav-tools .search-box{display:none;}
  .nav-tools .btn-primary{display:none;}
  .nav-toggle{display:flex;}
  .site-header.is-open .hot-chips{
    display:flex;flex-direction:column;
    position:absolute;left:0;right:0;top:100%;
    background:#fff;padding:16px 20px 20px;
    box-shadow:var(--shadow-2);
    border-bottom:1px solid var(--line);
  }
  .site-header.is-open .hot-chips .chip{width:100%;text-align:center;}
  .nav-main{gap:0;padding:4px 0 8px;}
  .page-head{padding:32px 0 28px;}
  .page-head .lead{font-size:16px;}
  .content-col{gap:44px;}
  .qa-item summary{font-size:16px;padding:16px 56px 16px 18px;}
  .qa-body{padding:14px 18px 20px 18px;margin-right:12px;font-size:15.5px;}
  .check-card,.form-card{padding:22px 18px;}
  .related-grid{grid-template-columns:minmax(0,1fr);}
  .footer-grid{grid-template-columns:minmax(0,1fr);}
  .site-footer{margin-top:56px;padding:48px 0 80px;}
  .cta-banner{padding:28px 20px;}
  .cta-banner h2{font-size:22px;}
  .cta-actions{flex-direction:column;}
  .cta-actions .btn{width:100%;}
  .mobile-bar{display:block;}
}
@media (max-width:520px){
  body{font-size:15.5px;}
  .section-head h2{font-size:23px;}
  .page-head h1{font-size:26px;}
  .brand-mark{width:36px;height:36px;font-size:18px;}
  .brand-name{font-size:15.5px;}
  .badge{font-size:12px;padding:6px 12px;}
  .qa-item summary{padding-right:52px;}
  .qa-item summary::after{width:24px;height:24px;font-size:15px;}
  .check-list li{font-size:15px;padding:12px;}
  .footer-bottom{flex-direction:column;align-items:flex-start;}
}