/* roulang page: index */
:root{
  --primary:#5A3DF0;
  --primary-dark:#3F27C4;
  --primary-light:#EDE9FF;
  --lime:#C6F24E;
  --orange:#FF7A45;
  --ink:#14121F;
  --panel:#1E1B2E;
  --bg:#F5F3EE;
  --card:#FFFFFF;
  --border:#E6E2D8;
  --text:#191725;
  --text-2:#5C586E;
  --text-3:#8B879C;
  --success:#2FA36B;
  --r-sm:8px;
  --r-md:12px;
  --r-lg:20px;
  --r-xl:24px;
  --sh-1:0 2px 8px rgba(20,18,31,.06);
  --sh-2:0 12px 28px rgba(20,18,31,.12);
  --sh-dark:0 8px 24px rgba(0,0,0,.35);
  --ease:180ms ease-out;
}
*,*::before,*::after{box-sizing:border-box;}
html{-webkit-text-size-adjust:100%;scroll-behavior:smooth;}
body{
  margin:0;
  background:var(--bg);
  color:var(--text);
  font-family:system-ui,-apple-system,"PingFang SC","Hiragino Sans GB","Microsoft YaHei","Noto Sans SC",sans-serif;
  font-size:16.5px;
  line-height:1.9;
  letter-spacing:.2px;
}
img{max-width:100%;display:block;}
a{color:var(--primary-dark);text-decoration:none;transition:color var(--ease),background-color var(--ease),border-color var(--ease),box-shadow var(--ease),transform var(--ease);}
a:hover{color:var(--primary);}
button{font:inherit;cursor:pointer;}
ul,ol{margin:0;padding:0;list-style:none;}
h1,h2,h3,h4{margin:0;font-weight:700;line-height:1.42;letter-spacing:.3px;}
p{margin:0;}
:focus-visible{outline:2px solid var(--primary);outline-offset:2px;}
::selection{background:var(--primary-light);color:var(--primary-dark);}

.container{width:100%;max-width:1200px;margin:0 auto;padding:0 24px;}
@media(min-width:1440px){.container{max-width:1280px;}}

/* ---------- 导航 ---------- */
.site-header{position:sticky;top:0;z-index:120;padding:12px 0;transition:padding var(--ease);}
.site-header.is-scrolled{padding:6px 0;}
.nav-shell{
  display:flex;align-items:center;gap:18px;
  background:var(--ink);
  border:1px solid rgba(255,255,255,.08);
  border-radius:var(--r-xl);
  padding:10px 14px;
  box-shadow:0 4px 14px rgba(20,18,31,.18);
  transition:box-shadow var(--ease);
}
.site-header.is-scrolled .nav-shell{box-shadow:var(--sh-dark);}
.brand{display:flex;align-items:center;gap:10px;color:#F2F0EA;flex:none;}
.brand:hover{color:#fff;}
.brand-mark{
  width:34px;height:34px;border-radius:10px;
  background:linear-gradient(145deg,var(--primary),var(--primary-dark));
  display:grid;place-items:center;
  font-size:12px;font-weight:700;color:#fff;letter-spacing:.5px;
  box-shadow:0 4px 12px rgba(90,61,240,.45);
}
.brand-text{font-size:15.5px;font-weight:600;letter-spacing:.4px;white-space:nowrap;}
.nav-menu{display:flex;align-items:center;gap:6px;margin-left:auto;}
.nav-item{
  position:relative;
  display:inline-flex;align-items:center;
  padding:9px 15px;
  font-size:14px;color:#B9B5C9;
  border:1px solid transparent;border-radius:var(--r-md);
  transition:all var(--ease);
}
.nav-item:hover{background:var(--panel);color:#F2F0EA;border-color:rgba(255,255,255,.08);transform:translateY(-1px);}
.nav-item.is-active{background:rgba(90,61,240,.2);color:#fff;border-color:rgba(90,61,240,.55);}
.nav-item.is-active::before{
  content:"";position:absolute;left:4px;top:50%;transform:translateY(-50%);
  width:3px;height:16px;border-radius:2px;background:var(--primary);
}
.nav-item.is-active{padding-left:19px;}
.nav-actions{display:flex;align-items:center;gap:10px;flex:none;}
.nav-toggle{
  display:none;width:40px;height:40px;border-radius:12px;
  background:var(--panel);border:1px solid rgba(255,255,255,.1);
  color:#F2F0EA;place-items:center;padding:0;
}
.nav-toggle span{display:block;width:16px;height:1.6px;background:#F2F0EA;border-radius:2px;position:relative;}
.nav-toggle span::before,.nav-toggle span::after{
  content:"";position:absolute;left:0;width:16px;height:1.6px;background:#F2F0EA;border-radius:2px;
}
.nav-toggle span::before{top:-5px;}
.nav-toggle span::after{top:5px;}

.nav-drawer{position:fixed;inset:0;background:rgba(20,18,31,.6);opacity:0;visibility:hidden;transition:opacity var(--ease),visibility var(--ease);z-index:110;}
.nav-drawer.is-open{opacity:1;visibility:visible;}
.nav-drawer-panel{
  position:absolute;top:84px;left:16px;right:16px;
  background:var(--ink);border:1px solid rgba(255,255,255,.08);
  border-radius:var(--r-xl);padding:16px;box-shadow:var(--sh-dark);
}
.drawer-title{font-size:12.5px;color:#8B879C;letter-spacing:.6px;margin-bottom:10px;}
.drawer-grid{display:grid;grid-template-columns:1fr 1fr;gap:10px;margin-bottom:14px;}
.drawer-card{
  display:block;padding:12px 14px;border-radius:var(--r-md);
  background:var(--panel);border:1px solid rgba(255,255,255,.07);
  color:#F2F0EA;font-size:14px;
}
.drawer-card:hover{background:rgba(90,61,240,.22);border-color:rgba(90,61,240,.5);color:#fff;transform:translateY(-1px);}
.drawer-card small{display:block;font-size:12px;color:#8B879C;margin-top:2px;}

/* ---------- 按钮 ---------- */
.btn{
  display:inline-flex;align-items:center;justify-content:center;gap:8px;
  height:44px;padding:0 22px;border-radius:var(--r-md);
  font-size:15px;font-weight:600;letter-spacing:.3px;
  border:1px solid transparent;white-space:nowrap;
  transition:all var(--ease);
}
.btn-primary{background:var(--primary);color:#fff;box-shadow:0 6px 16px rgba(90,61,240,.32);}
.btn-primary:hover{background:var(--primary-dark);color:#fff;transform:translateY(-1px);box-shadow:0 10px 22px rgba(90,61,240,.38);}
.btn-primary:active{transform:translateY(0);filter:brightness(94%);}
.btn-ghost{background:transparent;color:var(--primary-dark);border:1.5px solid var(--primary);}
.btn-ghost:hover{background:var(--primary-light);color:var(--primary-dark);transform:translateY(-1px);}
.btn-ghost:active{transform:translateY(0);filter:brightness(96%);}
.btn-onDark{background:var(--primary);color:#fff;}
.btn-onDark:hover{background:#6B50F5;color:#fff;}
.btn-ghostDark{background:transparent;color:#F2F0EA;border:1.5px solid rgba(255,255,255,.35);}
.btn-ghostDark:hover{background:rgba(255,255,255,.08);color:#fff;border-color:rgba(255,255,255,.6);}
.btn-sm{height:38px;padding:0 16px;font-size:14px;border-radius:10px;}
.btn-xs{height:32px;padding:0 13px;font-size:13px;border-radius:var(--r-sm);}
.btn-text{display:inline-flex;align-items:center;gap:6px;font-size:14px;font-weight:600;color:var(--primary-dark);}
.btn-text .arrow{transition:transform var(--ease);}
.btn-text:hover .arrow{transform:translateX(3px);}

/* ---------- 标签 ---------- */
.tag{
  display:inline-flex;align-items:center;gap:5px;
  height:24px;padding:0 10px;border-radius:999px;
  font-size:12.5px;font-weight:600;letter-spacing:.3px;
}
.tag-purple{background:var(--primary-light);color:var(--primary-dark);}
.tag-lime{background:var(--lime);color:var(--ink);}
.tag-line{background:transparent;border:1px solid var(--border);color:var(--text-2);}
.tag-orange{background:rgba(255,122,69,.14);color:#D9541F;}

/* ---------- Hero ---------- */
.hero{padding:22px 0 0;}
.hero-inner{
  position:relative;
  display:grid;grid-template-columns:55fr 45fr;
  gap:44px;align-items:center;
  min-height:540px;
  padding:56px 48px;
  border-radius:var(--r-xl);
  overflow:hidden;
  color:#fff;
  background-image:
    linear-gradient(122deg,rgba(90,61,240,.80) 0%,rgba(48,32,120,.84) 46%,rgba(20,18,31,.88) 100%),
    url('/assets/images/backpic/back-1.png');
  background-size:cover,cover;
  background-position:center,center;
  box-shadow:0 18px 44px rgba(20,18,31,.18);
}
.hero-copy{position:relative;z-index:2;max-width:600px;}
.hero-tag{
  display:inline-flex;align-items:center;gap:8px;
  padding:6px 14px;border-radius:999px;
  background:rgba(255,255,255,.12);
  border:1px solid rgba(255,255,255,.22);
  font-size:12.5px;color:#EDE9FF;letter-spacing:.4px;
}
.hero-tag i{width:6px;height:6px;border-radius:50%;background:var(--lime);display:block;}
.hero h1{
  margin:20px 0 0;
  font-size:clamp(27px,3.4vw,43px);
  line-height:1.26;letter-spacing:.4px;color:#fff;
}
.hero-sub{
  margin-top:16px;
  font-size:clamp(15px,1.35vw,18.5px);
  line-height:1.8;color:#DCD8EE;max-width:520px;
}
.hero-actions{display:flex;flex-wrap:wrap;gap:12px;margin-top:28px;}
.hero-trust{
  display:flex;flex-wrap:wrap;align-items:center;
  margin-top:26px;font-size:13.5px;color:#C3BFD8;
}
.hero-trust li{display:inline-flex;align-items:center;}
.hero-trust li:not(:last-child)::after{content:"·";margin:0 10px;color:var(--lime);font-weight:700;}

.hero-visual{position:relative;z-index:2;}
.cover-card{
  position:relative;
  border-radius:var(--r-xl);
  overflow:hidden;
  aspect-ratio:4/3;
  background:var(--primary-light);
  border:1px solid rgba(255,255,255,.16);
  box-shadow:var(--sh-dark);
}
.cover-card img{width:100%;height:100%;object-fit:cover;}
.cover-badge{
  position:absolute;top:14px;right:14px;
  background:var(--lime);color:var(--ink);
  font-size:12px;font-weight:700;letter-spacing:.3px;
  padding:5px 12px;border-radius:999px;
}
.mini-panel{
  position:absolute;left:-26px;bottom:-26px;
  width:min(288px,86%);
  background:#fff;border-radius:var(--r-lg);
  padding:16px 18px;
  box-shadow:var(--sh-2);
  color:var(--text);
}
.mini-panel-title{font-size:12.5px;font-weight:700;color:var(--text-3);letter-spacing:.6px;}
.mini-panel ol{margin-top:8px;}
.mini-panel li{
  display:flex;gap:10px;align-items:baseline;
  font-size:13.5px;color:var(--text-2);line-height:1.7;
  padding:5px 0;border-bottom:1px dashed var(--border);
}
.mini-panel li:last-child{border-bottom:0;}
.mini-panel li span{
  font-size:11.5px;font-weight:700;color:var(--primary-dark);
  background:var(--primary-light);border-radius:6px;
  padding:1px 6px;flex:none;
}

/* ---------- 指标带 ---------- */
.metric-band{padding:28px 0 0;}
.metric-grid{
  display:grid;grid-template-columns:repeat(4,1fr);
  background:var(--card);border:1px solid var(--border);
  border-radius:var(--r-lg);box-shadow:var(--sh-1);
  overflow:hidden;
}
.metric{padding:22px 24px;border-right:1px solid var(--border);}
.metric:last-child{border-right:0;}
.metric strong{display:block;font-size:26px;line-height:1.2;color:var(--primary-dark);letter-spacing:.4px;}
.metric span{display:block;margin-top:6px;font-size:13.5px;color:var(--text-2);}

/* ---------- 通用板块 ---------- */
.section{padding:88px 0 0;}
.section-head{display:flex;align-items:flex-end;justify-content:space-between;gap:24px;margin-bottom:32px;}
.section-head-left{max-width:720px;}
.section-label{
  display:inline-block;font-size:12.5px;font-weight:700;letter-spacing:.8px;
  color:var(--primary-dark);background:var(--primary-light);
  padding:4px 10px;border-radius:var(--r-sm);margin-bottom:12px;
}
.section-title{
  position:relative;padding-left:16px;
  font-size:clamp(21px,2.3vw,29px);color:var(--text);
}
.section-title::before{
  content:"";position:absolute;left:0;top:.22em;
  width:4px;height:1em;border-radius:2px;background:var(--primary);
}
.section-desc{margin-top:10px;font-size:15px;color:var(--text-2);line-height:1.85;}

.card{
  background:var(--card);border:1px solid var(--border);
  border-radius:var(--r-lg);box-shadow:var(--sh-1);
  transition:box-shadow var(--ease),border-color var(--ease),transform var(--ease);
}
.card:hover{box-shadow:var(--sh-2);border-color:var(--primary);transform:translateY(-2px);}

/* ---------- 合集目录 ---------- */
.toc-list{
  background:var(--card);border:1px solid var(--border);
  border-radius:var(--r-lg);box-shadow:var(--sh-1);overflow:hidden;
}
.toc-item{
  display:flex;align-items:center;gap:18px;
  padding:20px 24px;
  border-bottom:1px solid var(--border);
  color:var(--text);
  transition:background-color var(--ease),transform var(--ease);
}
.toc-item:last-child{border-bottom:0;}
.toc-item:hover{background:var(--primary-light);transform:translateX(4px);color:var(--text);}
.toc-num{
  flex:none;width:46px;height:32px;border-radius:10px;
  border:1.5px solid var(--lime);background:#fff;
  display:grid;place-items:center;
  font-size:13px;font-weight:700;color:var(--primary-dark);letter-spacing:.5px;
}
.toc-body{flex:1;min-width:0;}
.toc-name{font-size:16px;font-weight:600;color:var(--text);}
.toc-desc{font-size:13.5px;color:var(--text-2);line-height:1.7;margin-top:2px;}
.toc-arrow{flex:none;color:var(--primary);font-size:16px;transition:transform var(--ease);}
.toc-item:hover .toc-arrow{transform:translateX(3px);}

/* ---------- 精选条目 ---------- */
.featured-grid{display:grid;grid-template-columns:1.62fr 1fr;gap:24px;align-items:stretch;}
.feature-main{display:grid;grid-template-columns:42fr 58fr;overflow:hidden;border-radius:var(--r-lg);}
.feature-media{position:relative;background:var(--primary-light);min-height:280px;overflow:hidden;}
.feature-media img{width:100%;height:100%;object-fit:cover;transition:transform 240ms ease-out;}
.feature-main:hover .feature-media img{transform:scale(1.03);}
.feature-body{padding:26px 28px;display:flex;flex-direction:column;gap:12px;}
.feature-body h3{font-size:20px;line-height:1.5;color:var(--text);}
.feature-main:hover .feature-body h3{color:var(--primary);}
.feature-body p{font-size:14.5px;color:var(--text-2);line-height:1.85;}
.meta-bar{
  display:flex;align-items:center;gap:14px;flex-wrap:wrap;
  margin-top:auto;padding-top:14px;border-top:1px solid var(--border);
  font-size:12.5px;color:var(--text-3);
}
.meta-bar .dot{width:4px;height:4px;border-radius:50%;background:var(--border);display:block;}
.feature-side{display:grid;grid-template-rows:1fr 1fr;gap:24px;}
.side-card{display:flex;flex-direction:column;overflow:hidden;}
.side-thumb{aspect-ratio:16/9;background:var(--primary-light);overflow:hidden;}
.side-thumb img{width:100%;height:100%;object-fit:cover;transition:transform 240ms ease-out;}
.side-card:hover .side-thumb img{transform:scale(1.04);}
.side-body{padding:18px 20px;display:flex;flex-direction:column;gap:8px;flex:1;}
.side-body h3{font-size:16px;line-height:1.55;}
.side-card:hover h3{color:var(--primary);}
.side-body p{font-size:13.5px;color:var(--text-2);line-height:1.8;}
.side-body .meta-bar{padding-top:10px;margin-top:auto;}

/* ---------- 相关推荐 ---------- */
.rec-grid{display:grid;grid-template-columns:repeat(2,1fr);gap:22px;}
.rec-card{display:flex;gap:18px;padding:20px;align-items:center;}
.rec-thumb{
  flex:none;width:104px;aspect-ratio:1/1;border-radius:14px;
  background:var(--primary-light);overflow:hidden;
}
.rec-thumb img{width:100%;height:100%;object-fit:cover;transition:transform 240ms ease-out;}
.rec-card:hover .rec-thumb img{transform:scale(1.05);}
.rec-body{min-width:0;}
.rec-body h3{font-size:16.5px;line-height:1.5;}
.rec-card:hover h3{color:var(--primary);}
.rec-body p{font-size:13.5px;color:var(--text-2);line-height:1.8;margin-top:6px;}
.rec-foot{display:flex;align-items:center;gap:10px;margin-top:10px;}

/* ---------- 最新信息 ---------- */
.news-grid{display:grid;grid-template-columns:1fr 1.05fr;gap:28px;}
.news-feature{display:flex;flex-direction:column;overflow:hidden;}
.news-feature .thumb{aspect-ratio:16/9;background:var(--primary-light);overflow:hidden;}
.news-feature .thumb img{width:100%;height:100%;object-fit:cover;transition:transform 240ms ease-out;}
.news-feature:hover .thumb img{transform:scale(1.03);}
.news-feature .body{padding:22px 24px;display:flex;flex-direction:column;gap:12px;flex:1;}
.news-feature h3{font-size:19px;line-height:1.5;}
.news-feature:hover h3{color:var(--primary);}
.news-feature p{font-size:14px;color:var(--text-2);line-height:1.85;}
.news-brief{background:var(--card);border:1px solid var(--border);border-radius:var(--r-lg);box-shadow:var(--sh-1);padding:6px 22px;}
.news-brief li{border-bottom:1px solid var(--border);padding:16px 0;}
.news-brief li:last-child{border-bottom:0;}
.news-brief a{display:block;color:var(--text);}
.news-brief a:hover .brief-title{color:var(--primary);}
.brief-title{font-size:15.5px;font-weight:600;line-height:1.6;color:var(--text);transition:color var(--ease);}
.brief-desc{font-size:13.5px;color:var(--text-2);line-height:1.75;margin-top:5px;
  display:-webkit-box;-webkit-line-clamp:2;-webkit-box-orient:vertical;overflow:hidden;}
.brief-meta{display:flex;align-items:center;gap:12px;margin-top:8px;font-size:12.5px;color:var(--text-3);}
.empty-state{
  padding:56px 24px;text-align:center;background:var(--card);
  border:1px dashed var(--border);border-radius:var(--r-lg);
}
.empty-state .icon{
  width:48px;height:48px;border-radius:14px;margin:0 auto 14px;
  background:var(--primary-light);color:var(--primary-dark);
  display:grid;place-items:center;font-size:20px;font-weight:700;
}
.empty-state p{font-size:14.5px;color:var(--text-2);}
.empty-state .btn-text{margin-top:10px;}

/* ---------- FAQ ---------- */
.faq-list{display:grid;gap:14px;max-width:920px;}
.faq-item{
  background:var(--card);border:1px solid var(--border);
  border-radius:var(--r-lg);box-shadow:var(--sh-1);
  transition:border-color var(--ease),box-shadow var(--ease);
}
.faq-item[open]{border-color:var(--primary);box-shadow:var(--sh-2);}
.faq-item summary{
  list-style:none;cursor:pointer;
  display:flex;align-items:center;justify-content:space-between;gap:18px;
  padding:20px 24px;font-size:17px;font-weight:600;color:var(--text);
}
.faq-item summary::-webkit-details-marker{display:none;}
.faq-item summary::after{
  content:"+";flex:none;width:26px;height:26px;border-radius:8px;
  background:var(--primary-light);color:var(--primary-dark);
  display:grid;place-items:center;font-size:17px;font-weight:700;line-height:1;
  transition:transform var(--ease);
}
.faq-item[open] summary::after{content:"−";background:var(--primary);color:#fff;}
.faq-answer{padding:0 24px 22px;}
.faq-answer p{font-size:15px;line-height:1.9;color:var(--text-2);}

/* ---------- CTA ---------- */
.cta-section{padding:88px 0 0;}
.cta-panel{
  position:relative;overflow:hidden;
  border-radius:var(--r-xl);
  background-image:
    linear-gradient(120deg,rgba(20,18,31,.95),rgba(30,27,46,.93)),
    url('/assets/images/backpic/back-2.webp');
  background-size:cover,cover;background-position:center,center;
  border:1px solid rgba(255,255,255,.08);
  padding:44px 48px;
  display:flex;align-items:center;justify-content:space-between;gap:36px;
  box-shadow:var(--sh-dark);
}
.cta-panel::after{
  content:"";position:absolute;left:0;right:0;top:0;height:2px;
  background:linear-gradient(90deg,var(--lime),rgba(198,242,78,0));
}
.cta-left{max-width:560px;position:relative;z-index:2;}
.cta-left h2{font-size:clamp(20px,2.2vw,26px);color:#F2F0EA;}
.cta-left p{margin-top:12px;font-size:14.5px;line-height:1.85;color:#B9B5C9;}
.cta-right{position:relative;z-index:2;display:flex;flex-direction:column;align-items:flex-end;gap:16px;}
.cta-buttons{display:flex;flex-wrap:wrap;gap:12px;}
.share-row{display:flex;gap:10px;}
.share-btn{
  width:38px;height:38px;border-radius:12px;
  background:rgba(255,255,255,.06);border:1px solid rgba(255,255,255,.12);
  color:#DCD8EE;display:grid;place-items:center;font-size:13px;font-weight:600;
}
.share-btn:hover{background:rgba(90,61,240,.3);border-color:rgba(90,61,240,.6);color:#fff;transform:translateY(-1px);}

/* ---------- 页脚 ---------- */
.site-footer{margin-top:88px;background:var(--ink);color:#B9B5C9;padding:64px 0 26px;}
.footer-grid{display:grid;grid-template-columns:1.5fr 1fr 1fr 1fr;gap:36px;}
.footer-brand{display:flex;align-items:center;gap:10px;margin-bottom:16px;}
.footer-brand .brand-mark{width:32px;height:32px;font-size:11.5px;}
.footer-brand span{color:#F2F0EA;font-size:15.5px;font-weight:600;letter-spacing:.4px;}
.footer-desc{font-size:13.5px;line-height:1.9;color:#B9B5C9;max-width:320px;}
.footer-contact{margin-top:16px;font-size:13px;color:#8B879C;line-height:1.9;}
.footer-contact a{color:#C3BFD8;}
.footer-contact a:hover{color:var(--lime);}
.footer-col h3{font-size:13.5px;color:#F2F0EA;letter-spacing:.6px;margin-bottom:16px;font-weight:600;}
.footer-col li{margin-bottom:10px;}
.footer-col a{font-size:13.5px;color:#B9B5C9;}
.footer-col a:hover{color:var(--lime);}
.footer-bottom{
  margin-top:44px;padding-top:20px;
  border-top:1px solid rgba(255,255,255,.08);
  display:flex;align-items:center;justify-content:space-between;gap:16px;flex-wrap:wrap;
  font-size:13px;color:#B9B5C9;
}
.footer-bottom a{color:#B9B5C9;}
.footer-bottom a:hover{color:var(--lime);}

/* ---------- 响应式 ---------- */
@media(max-width:1279px){
  .hero-inner{padding:48px 40px;gap:36px;}
  .news-grid{grid-template-columns:1fr;}
  .featured-grid{grid-template-columns:1fr;}
  .feature-side{grid-template-rows:none;grid-template-columns:1fr 1fr;}
}
@media(max-width:1023px){
  .nav-menu{display:none;}
  .nav-toggle{display:grid;}
  .nav-actions .btn-sm{display:none;}
  .hero-inner{grid-template-columns:1fr;min-height:0;padding:44px 32px;}
  .hero-visual{margin-top:12px;}
  .mini-panel{left:auto;right:12px;bottom:-20px;}
  .metric-grid{grid-template-columns:1fr 1fr;}
  .metric:nth-child(2){border-right:0;}
  .metric{border-bottom:1px solid var(--border);}
  .metric:nth-child(3),.metric:nth-child(4){border-bottom:0;}
  .feature-main{grid-template-columns:1fr;}
  .feature-media{min-height:220px;aspect-ratio:16/9;}
  .rec-grid{grid-template-columns:1fr;}
  .cta-panel{flex-direction:column;align-items:flex-start;padding:36px 30px;}
  .cta-right{align-items:flex-start;width:100%;}
  .footer-grid{grid-template-columns:1fr 1fr;}
}
@media(max-width:767px){
  body{font-size:16px;}
  .container{padding:0 16px;}
  .section{padding:56px 0 0;}
  .cta-section{padding:56px 0 0;}
  .site-footer{margin-top:56px;padding:48px 0 22px;}
  .hero{padding:14px 0 0;}
  .hero-inner{padding:32px 22px;border-radius:var(--r-lg);}
  .hero-actions .btn{flex:1 1 auto;}
  .mini-panel{position:static;width:100%;margin-top:14px;}
  .cover-badge{top:10px;right:10px;}
  .feature-side{grid-template-columns:1fr;}
  .news-brief{padding:4px 18px;}
  .metric-grid{grid-template-columns:1fr;}
  .metric{border-right:0;border-bottom:1px solid var(--border);}
  .metric:last-child{border-bottom:0;}
  .section-head{flex-direction:column;align-items:flex-start;gap:14px;}
  .toc-item{padding:16px 16px;gap:12px;}
  .toc-num{width:40px;height:28px;font-size:12px;}
  .toc-desc{display:none;}
  .rec-card{flex-direction:column;align-items:flex-start;}
  .rec-thumb{width:100%;aspect-ratio:16/9;}
  .faq-item summary{padding:16px 18px;font-size:15.5px;}
  .faq-answer{padding:0 18px 18px;}
  .cta-panel{padding:28px 22px;border-radius:var(--r-lg);}
  .footer-grid{grid-template-columns:1fr;gap:28px;}
  .footer-bottom{flex-direction:column;align-items:flex-start;gap:8px;}
  .drawer-grid{grid-template-columns:1fr;}
}
@media(max-width:520px){
  .hero h1{font-size:24px;}
  .hero-sub{font-size:15px;}
  .hero-trust{font-size:12.5px;}
  .btn{height:42px;padding:0 18px;font-size:14.5px;}
  .feature-body{padding:20px 18px;}
  .news-feature .body{padding:18px 18px;}
}
@media(prefers-reduced-motion:reduce){
  *{transition:none!important;animation:none!important;}
  html{scroll-behavior:auto;}
}

/* roulang page: article */
:root{
  --brand:#5A3DF0;
  --brand-deep:#3F27C4;
  --brand-soft:#EDE9FF;
  --accent:#C6F24E;
  --warm:#FF7A45;
  --ink:#14121F;
  --panel:#1E1B2E;
  --page:#F5F3EE;
  --card:#FFFFFF;
  --line:#E6E2D8;
  --text:#191725;
  --text-2:#5C586E;
  --text-3:#8B879C;
  --on-dark:#F2F0EA;
  --on-dark-2:#B9B5C9;
  --ok:#2FA36B;
  --warn:#D98A1F;
  --err:#D8453C;
  --r-sm:8px;
  --r-btn:12px;
  --r-card:20px;
  --r-hero:24px;
  --sh-1:0 2px 8px rgba(20,18,31,.06);
  --sh-2:0 12px 28px rgba(20,18,31,.12);
  --sh-dark:0 8px 24px rgba(0,0,0,.35);
  --ease:all .2s ease-out;
}
*,*::before,*::after{box-sizing:border-box}
html{-webkit-text-size-adjust:100%}
body{
  margin:0;
  background:var(--page);
  color:var(--text);
  font-family:system-ui,-apple-system,"PingFang SC","Hiragino Sans GB","Microsoft YaHei","Noto Sans SC",sans-serif;
  font-size:16px;
  line-height:1.9;
  letter-spacing:.2px;
}
img{max-width:100%;display:block;border:0}
a{color:var(--brand-deep);text-decoration:none;transition:var(--ease)}
a:hover{color:var(--brand);text-decoration:underline}
a:focus-visible,button:focus-visible,input:focus-visible{outline:2px solid var(--brand);outline-offset:2px;border-radius:6px}
h1,h2,h3,h4{margin:0;line-height:1.4;letter-spacing:.3px;font-weight:700}
p{margin:0 0 1.15em}
ul,ol{margin:0;padding:0;list-style:none}
button{font-family:inherit;cursor:pointer}
.container{width:100%;max-width:1200px;margin:0 auto;padding:0 24px}

/* ============ header / nav ============ */
.site-header{position:sticky;top:0;z-index:60;padding:14px 0 6px;background:linear-gradient(180deg,rgba(245,243,238,.96),rgba(245,243,238,.72));backdrop-filter:blur(8px)}
.nav-panel{
  display:flex;align-items:center;gap:18px;
  background:var(--ink);
  border:1px solid rgba(255,255,255,.08);
  border-radius:var(--r-hero);
  padding:12px 16px;
  box-shadow:var(--sh-dark);
}
.brand{display:flex;align-items:center;gap:10px;color:var(--on-dark);font-weight:700;font-size:16px;letter-spacing:.4px;white-space:nowrap}
.brand:hover{color:#fff;text-decoration:none}
.brand-mark{
  width:34px;height:34px;border-radius:10px;
  background:linear-gradient(140deg,var(--brand),var(--brand-deep));
  color:#fff;font-size:13px;font-weight:700;letter-spacing:.5px;
  display:flex;align-items:center;justify-content:center;
}
.nav-menu{display:flex;align-items:center;gap:8px;margin-left:6px}
.nav-item{
  display:inline-flex;align-items:center;height:38px;padding:0 14px;
  border-radius:var(--r-btn);
  color:var(--on-dark-2);font-size:14px;
  border:1px solid rgba(255,255,255,.08);
  background:rgba(255,255,255,.03);
  transition:var(--ease);
}
.nav-item:hover{background:var(--brand-soft);color:var(--brand-deep);border-color:var(--brand);text-decoration:none}
.nav-item.is-active{background:var(--brand-soft);color:var(--brand-deep);border-color:var(--brand);box-shadow:inset 3px 0 0 var(--brand)}
.nav-cta{
  margin-left:auto;display:inline-flex;align-items:center;gap:8px;
  height:40px;padding:0 18px;border-radius:var(--r-btn);
  background:var(--brand);color:#fff;font-size:14px;font-weight:600;border:0;
}
.nav-cta:hover{background:var(--brand-deep);color:#fff;text-decoration:none;transform:translateY(-1px)}
.nav-toggle{display:none;margin-left:auto;width:42px;height:38px;border-radius:var(--r-btn);border:1px solid rgba(255,255,255,.14);background:rgba(255,255,255,.05);color:var(--on-dark)}
.nav-toggle span{display:block;width:18px;height:2px;background:var(--on-dark);margin:3px auto;border-radius:2px}
.nav-drawer{display:none;background:var(--panel);border:1px solid rgba(255,255,255,.08);border-radius:var(--r-card);margin-top:10px;padding:14px}
.nav-drawer.is-open{display:block}
.nav-drawer .drawer-grid{display:grid;grid-template-columns:1fr 1fr;gap:10px}
.nav-drawer a{display:flex;align-items:center;justify-content:center;height:46px;border-radius:var(--r-btn);border:1px solid rgba(255,255,255,.08);color:var(--on-dark-2);font-size:14px;background:rgba(255,255,255,.03)}
.nav-drawer a.is-active,.nav-drawer a:hover{background:var(--brand-soft);color:var(--brand-deep);border-color:var(--brand);text-decoration:none}
.drawer-cta{display:flex;align-items:center;justify-content:center;height:46px;margin-top:12px;border-radius:var(--r-btn);background:var(--brand);color:#fff;font-weight:600}

/* ============ breadcrumbs ============ */
.crumbs{padding:20px 0 4px;font-size:13.5px;color:var(--text-3)}
.crumbs ol{display:flex;flex-wrap:wrap;gap:8px;align-items:center}
.crumbs li{display:flex;align-items:center;gap:8px}
.crumbs li::after{content:"›";color:var(--text-3)}
.crumbs li:last-child::after{content:""}
.crumbs a{color:var(--text-2)}
.crumbs .now{color:var(--text);font-weight:600}

/* ============ article layout ============ */
.article-wrap{display:grid;grid-template-columns:minmax(0,1fr) 320px;gap:40px;padding:26px 0 72px;align-items:start}
.article-card{
  background:var(--card);border:1px solid var(--line);border-radius:var(--r-hero);
  box-shadow:var(--sh-1);padding:38px 44px 34px;
}
.article-label{
  display:inline-flex;align-items:center;height:26px;padding:0 12px;border-radius:999px;
  background:var(--brand-soft);color:var(--brand-deep);font-size:12.5px;font-weight:600;margin-bottom:16px;
}
.article-card h1{font-size:38px;line-height:1.28;letter-spacing:.4px;margin-bottom:18px;max-width:820px}
.meta-bar{
  display:flex;flex-wrap:wrap;align-items:center;gap:14px;
  border-top:1px solid var(--line);border-bottom:1px solid var(--line);
  padding:12px 0;margin-bottom:30px;font-size:13.5px;color:var(--text-2);
}
.meta-bar .dot{color:var(--line)}
.meta-actions{margin-left:auto;display:flex;gap:8px}
.chip-btn{
  display:inline-flex;align-items:center;gap:6px;height:32px;padding:0 12px;border-radius:var(--r-btn);
  border:1px solid var(--line);background:#fff;color:var(--text-2);font-size:13px;transition:var(--ease);
}
.chip-btn:hover{border-color:var(--brand);color:var(--brand-deep);background:var(--brand-soft)}
.chip-btn.save:hover{border-color:var(--warm);color:var(--warm);background:#FFF3EE}

/* ============ article content ============ */
.article-body{max-width:760px;font-size:17px;line-height:1.95;color:var(--text)}
.article-body p{margin:0 0 1.25em}
.article-body h2{
  font-size:22px;margin:34px 0 16px;padding-left:14px;position:relative;line-height:1.5;
}
.article-body h2::before{content:"";position:absolute;left:0;top:6px;bottom:6px;width:4px;border-radius:3px;background:var(--brand)}
.article-body h3{font-size:19px;margin:26px 0 12px;color:var(--brand-deep)}
.article-body ul,.article-body ol{margin:0 0 1.25em;padding-left:1.25em;list-style:disc}
.article-body ol{list-style:decimal}
.article-body li{margin-bottom:.5em;line-height:1.9}
.article-body blockquote{
  margin:22px 0;padding:18px 20px;background:var(--brand-soft);border-left:4px solid var(--brand);
  border-radius:12px;color:var(--brand-deep);font-size:16.5px;
}
.article-body img{border-radius:16px;width:100%;height:auto;margin:20px 0;background:var(--brand-soft)}
.article-body a{text-decoration:underline}
.article-body code{background:var(--brand-soft);border-radius:6px;padding:2px 6px;font-size:15px;color:var(--brand-deep)}
.article-body table{width:100%;border-collapse:collapse;margin:20px 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(--page);font-weight:600}

/* ============ more modules ============ */
.tag-row{display:flex;flex-wrap:wrap;gap:8px;margin:34px 0 0;padding-top:22px;border-top:1px solid var(--line)}
.tag{display:inline-flex;align-items:center;height:24px;padding:0 12px;border-radius:999px;font-size:12.5px;background:var(--brand-soft);color:var(--brand-deep);border:1px solid transparent}
.tag.alt{background:#F1F8D8;color:#3F4D14}
.tag.ghost{background:#fff;border-color:var(--line);color:var(--text-2)}

.share-bar{
  display:flex;flex-wrap:wrap;align-items:center;gap:12px;
  margin-top:22px;padding:18px 20px;border-radius:16px;background:var(--page);border:1px solid var(--line);
}
.share-bar strong{font-size:15px}
.share-bar .muted{font-size:13.5px;color:var(--text-3);margin-right:auto}
.btn{display:inline-flex;align-items:center;justify-content:center;gap:8px;height:44px;padding:0 22px;border-radius:var(--r-btn);font-size:15px;font-weight:600;border:1px solid transparent;transition:var(--ease)}
.btn-primary{background:var(--brand);color:#fff}
.btn-primary:hover{background:var(--brand-deep);color:#fff;text-decoration:none;transform:translateY(-1px)}
.btn-primary:active{transform:translateY(1px);filter:brightness(.94)}
.btn-ghost{background:transparent;color:var(--brand-deep);border:1.5px solid var(--brand)}
.btn-ghost:hover{background:var(--brand-soft);color:var(--brand-deep);text-decoration:none}
.btn-text{display:inline-flex;align-items:center;gap:6px;height:32px;font-size:14px;font-weight:600;color:var(--brand-deep);background:none;border:0;padding:0}
.btn-text::after{content:"→";transition:var(--ease)}
.btn-text:hover{text-decoration:none;color:var(--brand)}
.btn-text:hover::after{transform:translateX(3px)}
.btn-sm{height:38px;padding:0 16px;font-size:14px}

.empty-block{
  text-align:center;padding:54px 24px;border:1px dashed var(--line);border-radius:var(--r-card);background:#fff;
}
.empty-block .icon{width:48px;height:48px;border-radius:14px;background:var(--brand-soft);color:var(--brand-deep);display:flex;align-items:center;justify-content:center;margin:0 auto 14px;font-weight:700}
.empty-block p{color:var(--text-2);margin-bottom:14px}

/* ============ related ============ */
.related{padding:0 0 76px}
.section-head{display:flex;align-items:flex-end;gap:14px;margin-bottom:22px;padding-left:14px;position:relative}
.section-head::before{content:"";position:absolute;left:0;top:8px;bottom:8px;width:4px;border-radius:3px;background:var(--accent)}
.section-head h2{font-size:26px}
.section-head .desc{font-size:14px;color:var(--text-3);margin-left:auto}
.rel-grid{display:grid;grid-template-columns:repeat(4,minmax(0,1fr));gap:22px}
.rel-card{
  display:flex;flex-direction:column;background:#fff;border:1px solid var(--line);border-radius:var(--r-card);
  box-shadow:var(--sh-1);overflow:hidden;transition:var(--ease);height:100%;
}
.rel-card:hover{transform:translateY(-2px);box-shadow:var(--sh-2);border-color:var(--brand);text-decoration:none}
.thumb{position:relative;aspect-ratio:16/9;background:var(--brand-soft);overflow:hidden}
.thumb img{width:100%;height:100%;object-fit:cover;transition:transform .24s ease-out}
.rel-card:hover .thumb img{transform:scale(1.03)}
.rel-card .body{padding:18px 20px 20px;display:flex;flex-direction:column;gap:8px;flex:1}
.rel-card h3{font-size:17px;line-height:1.55;color:var(--text);display:-webkit-box;-webkit-line-clamp:2;-webkit-box-orient:vertical;overflow:hidden}
.rel-card:hover h3{color:var(--brand-deep)}
.rel-card p{font-size:14px;line-height:1.8;color:var(--text-2);margin:0;display:-webkit-box;-webkit-line-clamp:2;-webkit-box-orient:vertical;overflow:hidden}
.rel-card .foot{margin-top:auto;font-size:12.5px;color:var(--text-3);display:flex;align-items:center;justify-content:space-between}

/* ============ sidebar ============ */
.side-col{position:sticky;top:96px;display:flex;flex-direction:column;gap:20px}
.side-card{background:#fff;border:1px solid var(--line);border-radius:var(--r-card);box-shadow:var(--sh-1);padding:20px 22px}
.side-card h3{font-size:16px;margin-bottom:14px;display:flex;align-items:center;gap:8px}
.side-card h3::before{content:"";width:8px;height:8px;border-radius:3px;background:var(--brand)}
.cat-list li+li{margin-top:10px}
.cat-list a{display:flex;align-items:center;justify-content:space-between;gap:10px;font-size:14.5px;color:var(--text-2);padding:9px 12px;border-radius:10px;border:1px solid var(--line);transition:var(--ease)}
.cat-list a:hover{background:var(--brand-soft);color:var(--brand-deep);border-color:var(--brand);text-decoration:none;transform:translateX(3px)}
.cat-list .num{font-size:12px;color:var(--text-3)}
.hot-list li{display:flex;gap:10px;padding:11px 0;border-bottom:1px solid var(--line);font-size:14.5px;line-height:1.7}
.hot-list li:last-child{border-bottom:0;padding-bottom:0}
.hot-list .idx{color:var(--brand);font-weight:700;font-size:13px;flex:0 0 20px}
.hot-list a{color:var(--text-2)}
.hot-list a:hover{color:var(--brand-deep)}
.side-cta{background:var(--ink);border:1px solid rgba(255,255,255,.08);border-radius:var(--r-card);padding:22px;color:var(--on-dark);box-shadow:var(--sh-dark)}
.side-cta h3{font-size:16px;margin-bottom:8px}
.side-cta p{font-size:13.5px;color:var(--on-dark-2);margin-bottom:16px;line-height:1.8}
.side-cta .btn{width:100%}

/* ============ footer ============ */
.site-footer{background:var(--ink);color:var(--on-dark);padding:58px 0 26px;margin-top:8px}
.footer-grid{display:grid;grid-template-columns:1.6fr 1fr 1fr 1fr;gap:36px;padding-bottom:34px;border-bottom:1px solid rgba(255,255,255,.08)}
.footer-brand{display:flex;align-items:center;gap:10px;font-size:16px;font-weight:700;color:#fff;margin-bottom:14px}
.footer-desc{font-size:13.5px;line-height:1.9;color:var(--on-dark-2);max-width:340px}
.footer-contact{font-size:13px;color:var(--on-dark-2);margin-top:12px}
.footer-col h3{font-size:15px;color:#fff;margin-bottom:14px}
.footer-col li+li{margin-top:9px}
.footer-col a{font-size:13.5px;color:var(--on-dark-2)}
.footer-col a:hover{color:#fff}
.footer-bottom{display:flex;flex-wrap:wrap;gap:10px;justify-content:space-between;font-size:13px;color:var(--on-dark-2);padding-top:20px}
.footer-bottom a{color:var(--on-dark-2)}

@media (max-width:1279px){
  .article-wrap{grid-template-columns:minmax(0,1fr);gap:0}
  .side-col{display:none}
  .rel-grid{grid-template-columns:repeat(2,minmax(0,1fr))}
}
@media (max-width:1023px){
  .nav-menu,.nav-cta{display:none}
  .nav-toggle{display:block}
  .nav-panel{padding:10px 14px}
  .article-card{padding:30px 26px}
  .article-card h1{font-size:30px}
  .footer-grid{grid-template-columns:1fr 1fr;gap:28px}
}
@media (max-width:767px){
  .container{padding:0 16px}
  .crumbs{font-size:13px}
  .article-card{padding:24px 18px;border-radius:var(--r-card)}
  .article-card h1{font-size:25px;line-height:1.35}
  .article-body{font-size:16px;line-height:1.9}
  .article-body h2{font-size:20px;margin:28px 0 14px}
  .article-body h3{font-size:18px}
  .meta-actions{margin-left:0;width:100%}
  .share-bar .muted{margin-right:0;width:100%}
  .rel-grid{grid-template-columns:1fr;gap:16px}
  .section-head{flex-direction:column;align-items:flex-start;gap:6px}
  .section-head .desc{margin-left:0}
  .footer-grid{grid-template-columns:1fr;gap:26px}
  .footer-bottom{flex-direction:column}
}
@media (prefers-reduced-motion:reduce){
  *{transition:none!important;animation:none!important}
  .rel-card:hover,.cat-list a:hover,.btn-primary:hover{transform:none}
}

/* roulang page: category1 */
:root{
  --main:#5A3DF0;
  --main-dark:#3F27C4;
  --main-light:#EDE9FF;
  --lime:#C6F24E;
  --orange:#FF7A45;
  --ink:#14121F;
  --panel:#1E1B2E;
  --bg:#F5F3EE;
  --card:#FFFFFF;
  --line:#E6E2D8;
  --text:#191725;
  --text-2:#5C586E;
  --text-3:#8B879C;
  --on-dark:#F2F0EA;
  --on-dark-2:#B9B5C9;
  --ok:#2FA36B;
  --warn:#D98A1F;
  --err:#D8453C;
  --r-sm:8px;
  --r-md:12px;
  --r-lg:16px;
  --r-xl:20px;
  --r-2xl:24px;
  --sh-1:0 2px 8px rgba(20,18,31,.06);
  --sh-2:0 12px 28px rgba(20,18,31,.12);
  --sh-dark:0 8px 24px rgba(0,0,0,.35);
  --t:200ms ease-out;
  --container:1200px;
}

*,*::before,*::after{box-sizing:border-box}
html{-webkit-text-size-adjust:100%;scroll-behavior:smooth}
body{
  margin:0;
  font-family:system-ui,-apple-system,"PingFang SC","Hiragino Sans GB","Microsoft YaHei","Noto Sans SC",sans-serif;
  background:var(--bg);
  color:var(--text);
  font-size:16.5px;
  line-height:1.9;
  letter-spacing:.2px;
}
img{max-width:100%;display:block;border:0}
a{color:var(--main-dark);text-decoration:none;transition:color var(--t)}
a:hover{color:var(--main);text-decoration:underline}
ul,ol{margin:0;padding:0;list-style:none}
h1,h2,h3,h4{margin:0;font-weight:700;line-height:1.35;letter-spacing:.4px;color:var(--text)}
p{margin:0}
button,input{font:inherit;color:inherit}
button{cursor:pointer;border:0;background:none}
:focus-visible{outline:2px solid var(--main);outline-offset:2px;border-radius:4px}

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

/* ---------- 顶部导航 ---------- */
.site-header{
  position:sticky;
  top:0;
  z-index:60;
  background:var(--bg);
  padding:14px 0;
  transition:padding var(--t);
}
.site-header.is-scrolled{padding:8px 0}
.nav-panel{
  display:flex;
  align-items:center;
  gap:16px;
  background:var(--ink);
  border:1px solid rgba(255,255,255,.08);
  border-radius:var(--r-2xl);
  padding:10px 16px;
  box-shadow:var(--sh-dark);
  transition:box-shadow var(--t);
}
.site-header.is-scrolled .nav-panel{box-shadow:0 14px 34px rgba(0,0,0,.45)}
.brand{
  display:flex;
  align-items:center;
  gap:10px;
  color:var(--on-dark);
  font-weight:700;
  font-size:16px;
  letter-spacing:.4px;
  white-space:nowrap;
}
.brand:hover{color:#fff;text-decoration:none}
.brand-mark{
  display:inline-flex;
  align-items:center;
  justify-content:center;
  width:34px;
  height:34px;
  border-radius:10px;
  background:var(--main);
  color:#fff;
  font-size:13px;
  font-weight:700;
  letter-spacing:.6px;
}
.nav-menu{display:flex;align-items:center;gap:6px;margin-left:6px;flex-wrap:wrap}
.nav-item{
  position:relative;
  display:inline-flex;
  align-items:center;
  height:38px;
  padding:0 15px;
  border-radius:var(--r-md);
  color:var(--on-dark-2);
  font-size:15px;
  transition:background var(--t),color var(--t);
}
.nav-item:hover{background:rgba(255,255,255,.09);color:#fff;text-decoration:none}
.nav-item.is-active{padding-left:19px;background:var(--main-light);color:var(--main-dark);font-weight:600}
.nav-item.is-active::before{
  content:"";
  position:absolute;
  left:8px;
  top:50%;
  transform:translateY(-50%);
  width:3px;
  height:16px;
  border-radius:2px;
  background:var(--main);
}
.nav-item.is-active:hover{background:var(--main-light);color:var(--main-dark)}
.nav-actions{display:flex;align-items:center;gap:10px;margin-left:auto}
.nav-toggle{
  display:none;
  align-items:center;
  justify-content:center;
  width:40px;
  height:40px;
  border-radius:var(--r-md);
  border:1px solid rgba(255,255,255,.16);
  background:rgba(255,255,255,.06);
  color:var(--on-dark);
  transition:background var(--t);
}
.nav-toggle:hover{background:rgba(255,255,255,.14)}

/* ---------- 按钮 ---------- */
.btn{
  display:inline-flex;
  align-items:center;
  justify-content:center;
  gap:8px;
  height:44px;
  padding:0 22px;
  border-radius:var(--r-md);
  font-size:15px;
  font-weight:600;
  border:1.5px solid transparent;
  transition:transform var(--t),background var(--t),color var(--t),border-color var(--t),box-shadow var(--t);
}
.btn-sm{height:38px;padding:0 18px;font-size:14px}
.btn-primary{background:var(--main);color:#fff}
.btn-primary:hover{background:var(--main-dark);color:#fff;text-decoration:none;transform:translateY(-1px)}
.btn-primary:active{transform:translateY(1px);filter:brightness(.94)}
.btn-ghost{border-color:var(--main);color:var(--main-dark);background:transparent}
.btn-ghost:hover{background:var(--main-light);color:var(--main-dark);text-decoration:none;transform:translateY(-1px)}
.btn-ghost-dark{border-color:rgba(255,255,255,.34);color:var(--on-dark);background:transparent}
.btn-ghost-dark:hover{background:rgba(255,255,255,.12);color:#fff;text-decoration:none;transform:translateY(-1px)}
.btn[disabled]{opacity:.4;cursor:not-allowed}
.link-arrow{
  display:inline-flex;
  align-items:center;
  gap:6px;
  font-size:14px;
  font-weight:600;
  color:var(--main-dark);
}
.link-arrow i{transition:transform var(--t)}
.link-arrow:hover{text-decoration:none;color:var(--main)}
.link-arrow:hover i{transform:translateX(3px)}

/* ---------- 标签 ---------- */
.badge{
  display:inline-flex;
  align-items:center;
  gap:6px;
  height:24px;
  padding:0 11px;
  border-radius:99px;
  font-size:12.5px;
  font-weight:600;
  letter-spacing:.2px;
  white-space:nowrap;
}
.badge-purple{background:var(--main-light);color:var(--main-dark)}
.badge-lime{background:var(--lime);color:var(--ink)}
.badge-line{border:1px solid var(--line);background:#fff;color:var(--text-2)}

/* ---------- 页面头部横幅 ---------- */
.page-head{
  margin-top:24px;
  display:grid;
  grid-template-columns:1fr 40%;
  gap:36px;
  align-items:center;
  background:var(--card);
  border:1px solid var(--line);
  border-radius:var(--r-2xl);
  padding:36px;
  box-shadow:var(--sh-1);
}
.page-head h1{font-size:clamp(28px,3.4vw,42px);line-height:1.28;margin:14px 0 0;letter-spacing:.4px}
.lede{margin-top:14px;font-size:17px;color:var(--text-2);max-width:56ch}
.head-meta{display:flex;flex-wrap:wrap;gap:8px;margin-top:18px}
.head-actions{display:flex;flex-wrap:wrap;gap:12px;margin-top:24px}
.page-head-media{
  aspect-ratio:4/3;
  border-radius:var(--r-xl);
  overflow:hidden;
  background:var(--main-light);
}
.page-head-media img{width:100%;height:100%;object-fit:cover}

/* ---------- 通用板块 ---------- */
.section{margin-top:72px;scroll-margin-top:100px}
.section-head{
  display:flex;
  align-items:flex-end;
  justify-content:space-between;
  gap:20px;
  margin-bottom:26px;
}
.section-title{
  position:relative;
  padding-left:16px;
  font-size:clamp(22px,2.4vw,30px);
}
.section-title::before{
  content:"";
  position:absolute;
  left:0;
  top:50%;
  transform:translateY(-50%);
  width:4px;
  height:26px;
  border-radius:2px;
  background:var(--main);
}
.section-sub{margin-top:10px;color:var(--text-2);font-size:15px;max-width:62ch}

/* ---------- 要点条 ---------- */
.fact-bar{
  margin-top:24px;
  display:grid;
  grid-template-columns:repeat(4,1fr);
  background:var(--card);
  border:1px solid var(--line);
  border-radius:var(--r-xl);
  overflow:hidden;
  box-shadow:var(--sh-1);
}
.fact{padding:24px;border-right:1px solid var(--line)}
.fact:last-child{border-right:none}
.fact-ico{
  display:inline-flex;
  align-items:center;
  justify-content:center;
  width:38px;
  height:38px;
  border-radius:11px;
  background:var(--main-light);
  color:var(--main-dark);
  font-size:16px;
  margin-bottom:14px;
}
.fact h3{font-size:17px;margin-bottom:8px}
.fact p{font-size:14.5px;color:var(--text-2);line-height:1.85}

/* ---------- 方向卡片 ---------- */
.dir-grid{display:grid;grid-template-columns:repeat(4,1fr);gap:22px}
.card{
  display:flex;
  flex-direction:column;
  background:var(--card);
  border:1px solid var(--line);
  border-radius:var(--r-xl);
  overflow:hidden;
  box-shadow:var(--sh-1);
  transition:transform var(--t),box-shadow var(--t),border-color var(--t);
}
.card:hover{transform:translateY(-2px);box-shadow:var(--sh-2);border-color:var(--main)}
.card-media{
  position:relative;
  aspect-ratio:16/10;
  background:var(--main-light);
  overflow:hidden;
}
.card-media img{width:100%;height:100%;object-fit:cover;transition:transform var(--t)}
.card:hover .card-media img{transform:scale(1.03)}
.card-flag{
  position:absolute;
  top:12px;
  right:12px;
  height:24px;
  padding:0 10px;
  border-radius:99px;
  background:var(--lime);
  color:var(--ink);
  font-size:12px;
  font-weight:700;
  display:inline-flex;
  align-items:center;
}
.card-body{padding:22px;display:flex;flex-direction:column;gap:10px;flex:1}
.card-body h3{font-size:19px;transition:color var(--t)}
.card:hover .card-body h3{color:var(--main-dark)}
.card-body p{font-size:14.5px;color:var(--text-2);line-height:1.85}
.card-foot{
  display:flex;
  align-items:center;
  justify-content:space-between;
  gap:10px;
  margin-top:auto;
  padding-top:14px;
  border-top:1px solid var(--line);
  font-size:13px;
  color:var(--text-3);
}

/* ---------- 流程步骤 ---------- */
.steps{display:grid;grid-template-columns:repeat(4,1fr);gap:22px}
.step{
  background:var(--card);
  border:1px solid var(--line);
  border-radius:var(--r-xl);
  padding:24px;
  box-shadow:var(--sh-1);
  transition:transform var(--t),box-shadow var(--t),border-color var(--t);
}
.step:hover{transform:translateY(-2px);box-shadow:var(--sh-2);border-color:var(--main)}
.step-num{
  display:inline-flex;
  align-items:center;
  justify-content:center;
  width:36px;
  height:36px;
  border-radius:11px;
  background:var(--lime);
  color:var(--ink);
  font-size:14px;
  font-weight:800;
  letter-spacing:.5px;
  margin-bottom:16px;
}
.step h3{font-size:18px;margin-bottom:8px}
.step p{font-size:14.5px;color:var(--text-2);line-height:1.85}

/* ---------- 深度推荐 ---------- */
.pick-grid{display:grid;grid-template-columns:1.65fr 1fr;gap:22px}
.pick-main{display:grid;grid-template-columns:40% 1fr}
.pick-side{display:grid;gap:22px}
.mini-card{
  display:grid;
  grid-template-columns:38% 1fr;
  align-items:stretch;
  background:var(--card);
  border:1px solid var(--line);
  border-radius:var(--r-xl);
  overflow:hidden;
  box-shadow:var(--sh-1);
  transition:transform var(--t),box-shadow var(--t),border-color var(--t);
}
.mini-card:hover{transform:translateY(-2px);box-shadow:var(--sh-2);border-color:var(--main)}
.mini-card .thumb{background:var(--main-light);overflow:hidden;aspect-ratio:1/1}
.mini-card .thumb img{width:100%;height:100%;object-fit:cover;transition:transform var(--t)}
.mini-card:hover .thumb img{transform:scale(1.03)}
.mini-card .txt{padding:20px;display:flex;flex-direction:column;gap:8px;justify-content:center}
.mini-card .txt h3{font-size:17px;line-height:1.5}
.mini-card:hover .txt h3{color:var(--main-dark)}
.mini-card .txt p{font-size:14px;color:var(--text-2);line-height:1.8}
.meta-row{
  display:flex;
  align-items:center;
  gap:16px;
  padding-top:14px;
  margin-top:auto;
  border-top:1px solid var(--line);
  font-size:13px;
  color:var(--text-3);
}
.meta-row span{display:inline-flex;align-items:center;gap:6px}

/* ---------- 深色指标面板 ---------- */
.metrics{
  margin-top:72px;
  position:relative;
  overflow:hidden;
  background:var(--ink);
  border-radius:var(--r-2xl);
  padding:44px;
  color:var(--on-dark-2);
}
.metrics::before{
  content:"";
  position:absolute;
  inset:0;
  background-image:linear-gradient(rgba(255,255,255,.05) 1px,transparent 1px),linear-gradient(90deg,rgba(255,255,255,.05) 1px,transparent 1px);
  background-size:44px 44px;
  opacity:.7;
  pointer-events:none;
}
.metrics::after{
  content:"";
  position:absolute;
  left:44px;
  top:0;
  width:120px;
  height:2px;
  background:var(--lime);
  border-radius:2px;
}
.metrics-inner{position:relative;z-index:1}
.metrics h2{color:#fff;font-size:clamp(22px,2.4vw,28px)}
.metrics .metrics-desc{margin-top:12px;font-size:15px;max-width:60ch;color:var(--on-dark-2)}
.metric-grid{display:grid;grid-template-columns:repeat(4,1fr);gap:24px;margin-top:34px}
.metric{
  background:var(--panel);
  border:1px solid rgba(255,255,255,.08);
  border-radius:var(--r-lg);
  padding:22px;
}
.metric strong{display:block;font-size:34px;line-height:1.2;color:#fff;letter-spacing:.5px}
.metric strong em{font-style:normal;font-size:16px;color:var(--lime);margin-left:6px}
.metric span{display:block;margin-top:8px;font-size:14px;color:var(--on-dark-2)}

/* ---------- FAQ ---------- */
.faq{max-width:900px;margin:0 auto}
.faq-item{
  background:var(--card);
  border:1px solid var(--line);
  border-radius:var(--r-lg);
  margin-bottom:14px;
  overflow:hidden;
  transition:border-color var(--t),box-shadow var(--t);
}
.faq-item.is-open{border-color:var(--main);box-shadow:var(--sh-1)}
.faq-q{
  width:100%;
  display:flex;
  align-items:center;
  justify-content:space-between;
  gap:16px;
  padding:18px 22px;
  text-align:left;
  font-size:17px;
  font-weight:600;
  color:var(--text);
}
.faq-icon{
  position:relative;
  flex:0 0 auto;
  width:26px;
  height:26px;
  border-radius:8px;
  background:var(--main-light);
  color:var(--main-dark);
  display:inline-flex;
  align-items:center;
  justify-content:center;
  font-size:13px;
  transition:background var(--t),color var(--t),transform var(--t);
}
.faq-item.is-open .faq-icon{background:var(--main);color:#fff;transform:rotate(180deg)}
.faq-a{max-height:0;overflow:hidden;transition:max-height 220ms ease-out}
.faq-a p{padding:0 22px 20px;font-size:15px;line-height:1.9;color:var(--text-2)}

/* ---------- 订阅表单 ---------- */
.subscribe{
  display:grid;
  grid-template-columns:1fr 1fr;
  gap:32px;
  align-items:center;
  background:var(--main-light);
  border:1px solid #DCD4FF;
  border-radius:var(--r-2xl);
  padding:36px;
}
.subscribe h2{font-size:clamp(20px,2.2vw,26px)}
.subscribe p{margin-top:10px;font-size:15px;color:var(--text-2);max-width:52ch}
.subscribe-form{display:flex;flex-direction:column;gap:12px}
.form-row{display:flex;gap:12px}
.input{
  height:44px;
  width:100%;
  padding:0 16px;
  border:1px solid var(--line);
  border-radius:var(--r-md);
  background:#fff;
  color:var(--text);
  transition:border-color var(--t),box-shadow var(--t);
}
.input::placeholder{color:var(--text-3)}
.input:focus{outline:none;border-color:var(--main);box-shadow:0 0 0 3px rgba(90,61,240,.18)}
.form-note{font-size:13px;min-height:18px;color:var(--text-3)}
.form-note.is-error{color:var(--err)}
.form-note.is-ok{color:var(--ok)}

/* ---------- 深色 CTA ---------- */
.cta-band{
  margin-top:72px;
  position:relative;
  overflow:hidden;
  display:grid;
  grid-template-columns:1.4fr 1fr;
  gap:36px;
  align-items:center;
  background:var(--ink);
  border-radius:var(--r-2xl);
  padding:44px;
  color:var(--on-dark-2);
}
.cta-band::before{
  content:"";
  position:absolute;
  inset:0;
  background:
    radial-gradient(600px 220px at 8% 0%,rgba(90,61,240,.42),transparent 70%),
    linear-gradient(90deg,rgba(198,242,78,.14) 1px,transparent 1px);
  background-size:auto,56px 100%;
  pointer-events:none;
}
.cta-left{position:relative;z-index:1}
.cta-left h2{color:#fff;font-size:clamp(22px,2.4vw,30px)}
.cta-left p{margin-top:12px;font-size:15px;max-width:52ch}
.cta-right{position:relative;z-index:1;display:flex;flex-direction:column;gap:18px;align-items:flex-start}
.cta-btns{display:flex;flex-wrap:wrap;gap:12px}
.share-row{display:flex;gap:10px}
.share-btn{
  display:inline-flex;
  align-items:center;
  justify-content:center;
  width:38px;
  height:38px;
  border-radius:11px;
  border:1px solid rgba(255,255,255,.16);
  background:rgba(255,255,255,.06);
  color:var(--on-dark);
  transition:background var(--t),transform var(--t),border-color var(--t);
}
.share-btn:hover{background:rgba(255,255,255,.16);border-color:rgba(255,255,255,.3);transform:translateY(-2px);color:#fff}

/* ---------- 页脚 ---------- */
.site-footer{
  margin-top:80px;
  background:var(--ink);
  color:var(--on-dark-2);
  border-radius:var(--r-2xl) var(--r-2xl) 0 0;
  padding:56px 0 24px;
}
.footer-grid{display:grid;grid-template-columns:1.8fr 1fr 1fr 1fr;gap:32px}
.footer-brand{display:flex;align-items:center;gap:10px;color:#fff;font-weight:700;font-size:17px}
.footer-brand .brand-mark{width:32px;height:32px;font-size:12px}
.footer-desc{margin-top:16px;font-size:14px;line-height:1.9;max-width:40ch}
.footer-contact{margin-top:14px;font-size:13.5px;line-height:1.9;color:var(--on-dark-2)}
.footer-col h3{font-size:15px;color:#fff;margin-bottom:16px;letter-spacing:.3px}
.footer-col ul li{margin-bottom:10px;font-size:14px}
.footer-col ul li a{color:var(--on-dark-2)}
.footer-col ul li a:hover{color:#fff;text-decoration:none}
.footer-bottom{
  margin-top:40px;
  padding-top:20px;
  border-top:1px solid rgba(255,255,255,.08);
  display:flex;
  flex-wrap:wrap;
  align-items:center;
  justify-content:space-between;
  gap:12px;
  font-size:13px;
  color:var(--on-dark-2);
}
.footer-bottom a{color:var(--on-dark-2)}
.footer-bottom a:hover{color:#fff;text-decoration:none}

/* ---------- 移动抽屉 ---------- */
.drawer{position:fixed;inset:0;z-index:90;display:none}
.drawer.is-open{display:block}
.drawer-mask{position:absolute;inset:0;background:rgba(20,18,31,.6)}
.drawer-panel{
  position:absolute;
  top:0;
  right:0;
  width:min(360px,88vw);
  height:100%;
  background:var(--ink);
  border-left:1px solid rgba(255,255,255,.08);
  padding:20px;
  display:flex;
  flex-direction:column;
  gap:16px;
  overflow-y:auto;
}
.drawer-top{display:flex;align-items:center;justify-content:space-between}
.drawer-close{
  width:38px;
  height:38px;
  border-radius:var(--r-md);
  border:1px solid rgba(255,255,255,.16);
  background:rgba(255,255,255,.06);
  color:var(--on-dark);
}
.drawer-title{font-size:13px;color:var(--on-dark-2);letter-spacing:.4px}
.drawer-grid{display:grid;grid-template-columns:1fr 1fr;gap:12px}
.drawer-card{
  display:flex;
  flex-direction:column;
  gap:6px;
  padding:14px;
  border-radius:var(--r-md);
  border:1px solid rgba(255,255,255,.1);
  background:var(--panel);
  color:var(--on-dark);
  font-size:14.5px;
  font-weight:600;
}
.drawer-card i{color:var(--lime);font-size:14px}
.drawer-card:hover{text-decoration:none;border-color:var(--main);background:rgba(90,61,240,.28);color:#fff}
.drawer-card.is-active{background:var(--main-light);color:var(--main-dark);border-color:var(--main-light)}
.drawer-card.is-active i{color:var(--main-dark)}
.drawer-foot{margin-top:auto;display:flex;flex-direction:column;gap:12px}

/* ---------- 响应式 ---------- */
@media (min-width:1440px){
  :root{--container:1280px}
  .section{margin-top:96px}
}
@media (max-width:1279px){
  .page-head{padding:30px;gap:28px}
}
@media (max-width:1023px){
  .nav-menu{display:none}
  .nav-toggle{display:inline-flex}
  .nav-actions .btn{display:none}
  .page-head{grid-template-columns:1fr;padding:26px;gap:24px}
  .page-head-media{aspect-ratio:16/9}
  .fact-bar{grid-template-columns:repeat(2,1fr)}
  .fact:nth-child(1),.fact:nth-child(2){border-bottom:1px solid var(--line)}
  .fact:nth-child(2){border-right:none}
  .dir-grid{grid-template-columns:repeat(2,1fr)}
  .steps{grid-template-columns:repeat(2,1fr)}
  .pick-grid{grid-template-columns:1fr}
  .metric-grid{grid-template-columns:repeat(2,1fr)}
  .subscribe{grid-template-columns:1fr;padding:28px}
  .cta-band{grid-template-columns:1fr;padding:32px}
  .footer-grid{grid-template-columns:repeat(2,1fr);gap:28px}
}
@media (max-width:767px){
  body{font-size:16px}
  .container{padding:0 16px}
  .section{margin-top:52px}
  .section-head{flex-direction:column;align-items:flex-start;gap:10px}
  .fact-bar,.dir-grid,.steps,.metric-grid{grid-template-columns:1fr}
  .fact{border-right:none;border-bottom:1px solid var(--line)}
  .fact:last-child{border-bottom:none}
  .fact:nth-child(1),.fact:nth-child(2){border-bottom:1px solid var(--line)}
  .pick-main{grid-template-columns:1fr}
  .pick-main .card-media{aspect-ratio:16/9}
  .mini-card{grid-template-columns:34% 1fr}
  .mini-card .thumb{aspect-ratio:1/1}
  .metrics{padding:28px}
  .metrics::after{left:28px}
  .form-row{flex-direction:column}
  .footer-grid{grid-template-columns:1fr}
  .footer-bottom{justify-content:flex-start}
  .cta-btns{width:100%}
  .cta-btns .btn{flex:1 1 160px}
}
@media (max-width:520px){
  .brand-text{font-size:14.5px}
  .page-head h1{font-size:26px}
  .lede{font-size:15.5px}
  .head-actions{width:100%}
  .head-actions .btn{flex:1 1 100%}
  .card-foot{flex-direction:column;align-items:flex-start;gap:6px}
  .metric strong{font-size:28px}
}
@media (prefers-reduced-motion:reduce){
  *{transition:none!important;animation:none!important}
  html{scroll-behavior:auto}
  .card:hover,.step:hover,.mini-card:hover,.btn:hover{transform:none}
  .card:hover .card-media img,.mini-card:hover .thumb img{transform:none}
}

/* roulang page: category2 */
:root{
  --brand:#5A3DF0;
  --brand-dark:#3F27C4;
  --brand-light:#EDE9FF;
  --lime:#C6F24E;
  --orange:#FF7A45;
  --ink:#14121F;
  --panel:#1E1B2E;
  --bg:#F5F3EE;
  --card:#FFFFFF;
  --line:#E6E2D8;
  --t1:#191725;
  --t2:#5C586E;
  --t3:#8B879C;
  --on-dark:#F2F0EA;
  --on-dark-2:#B9B5C9;
  --ok:#2FA36B;
  --warn:#D98A1F;
  --err:#D8453C;
  --r-tag:8px;
  --r-btn:12px;
  --r-card:18px;
  --r-lg:24px;
  --sh1:0 2px 8px rgba(20,18,31,.06);
  --sh2:0 12px 28px rgba(20,18,31,.12);
  --sh-dark:0 8px 24px rgba(0,0,0,.35);
  --ease:180ms ease-out;
}
*,*::before,*::after{box-sizing:border-box}
html{-webkit-text-size-adjust:100%}
body{
  margin:0;
  background:var(--bg);
  color:var(--t1);
  font-family:system-ui,-apple-system,"PingFang SC","Hiragino Sans GB","Microsoft YaHei","Noto Sans SC",sans-serif;
  font-size:16px;
  line-height:1.9;
  letter-spacing:.2px;
}
img{max-width:100%;display:block}
a{color:var(--brand-dark);text-decoration:none;transition:color var(--ease)}
a:hover{color:var(--brand);text-decoration:underline}
h1,h2,h3,h4{margin:0;color:var(--t1);letter-spacing:.3px;font-weight:700}
p{margin:0 0 1em}
ul{margin:0;padding:0;list-style:none}
button{font:inherit;color:inherit;cursor:pointer}
:focus-visible{outline:2px solid var(--brand);outline-offset:2px}
.container{width:100%;max-width:1200px;margin:0 auto;padding:0 24px}
@media (min-width:1440px){.container{max-width:1280px}}
.section{padding:72px 0}
.section-tight{padding:52px 0}
@media (max-width:767px){
  .section{padding:48px 0}
  .section-tight{padding:40px 0}
  .container{padding:0 16px}
}

/* ---------- 顶部导航 ---------- */
.site-header{
  position:sticky;
  top:0;
  z-index:60;
  padding:12px 0;
  background:linear-gradient(180deg,rgba(245,243,238,.96),rgba(245,243,238,.78));
  backdrop-filter:blur(8px);
  transition:padding var(--ease);
}
.site-header.is-scrolled{padding:6px 0}
.nav-panel{
  display:flex;
  align-items:center;
  gap:18px;
  background:var(--ink);
  border:1px solid rgba(255,255,255,.08);
  border-radius:var(--r-lg);
  padding:10px 14px;
  box-shadow:0 4px 14px rgba(20,18,31,.18);
  transition:box-shadow var(--ease),padding var(--ease);
}
.site-header.is-scrolled .nav-panel{box-shadow:var(--sh-dark)}
.brand{
  display:flex;
  align-items:center;
  gap:10px;
  color:var(--on-dark);
  font-weight:700;
  font-size:16px;
  letter-spacing:.4px;
  white-space:nowrap;
}
.brand:hover{color:#fff;text-decoration:none}
.brand-mark{
  width:36px;height:36px;
  border-radius:12px;
  background:var(--brand);
  display:grid;place-items:center;
  font-size:13px;font-weight:800;
  color:#fff;
  letter-spacing:.5px;
  box-shadow:inset 0 0 0 1px rgba(255,255,255,.18);
}
.nav-menu{
  display:flex;
  align-items:center;
  gap:8px;
  margin:0 auto;
}
.nav-item{
  display:inline-flex;
  align-items:center;
  gap:6px;
  padding:9px 15px;
  border-radius:var(--r-btn);
  border:1px solid transparent;
  color:var(--on-dark-2);
  font-size:14px;
  letter-spacing:.2px;
  transition:background var(--ease),color var(--ease),transform var(--ease),border-color var(--ease);
}
.nav-item:hover{
  background:rgba(255,255,255,.07);
  color:#fff;
  text-decoration:none;
  transform:translateY(-1px);
}
.nav-item.is-active{
  background:var(--brand-light);
  color:var(--brand-dark);
  border-color:rgba(90,61,240,.3);
  box-shadow:inset 3px 0 0 var(--brand);
  font-weight:600;
}
.nav-side{display:flex;align-items:center;gap:10px}
.btn-nav{
  display:inline-flex;align-items:center;gap:8px;
  height:40px;
  padding:0 18px;
  border-radius:var(--r-btn);
  background:var(--brand);
  color:#fff;
  font-size:14px;
  font-weight:600;
  border:1px solid transparent;
  transition:background var(--ease),transform var(--ease),box-shadow var(--ease);
}
.btn-nav:hover{background:var(--brand-dark);color:#fff;text-decoration:none;transform:translateY(-1px);box-shadow:0 8px 18px rgba(90,61,240,.35)}
.btn-nav:active{transform:translateY(0);filter:brightness(.94)}
.nav-toggle{
  display:none;
  width:40px;height:40px;
  border-radius:var(--r-btn);
  background:rgba(255,255,255,.06);
  border:1px solid rgba(255,255,255,.12);
  color:var(--on-dark);
  align-items:center;justify-content:center;
}
.nav-toggle span{display:block;width:16px;height:2px;background:currentColor;border-radius:2px;position:relative}
.nav-toggle span::before,.nav-toggle span::after{
  content:"";position:absolute;left:0;width:16px;height:2px;background:currentColor;border-radius:2px;
}
.nav-toggle span::before{top:-5px}
.nav-toggle span::after{top:5px}

/* 抽屉 */
.drawer{
  position:fixed;inset:0;z-index:90;
  background:rgba(20,18,31,.6);
  opacity:0;visibility:hidden;
  transition:opacity var(--ease),visibility var(--ease);
}
.drawer.is-open{opacity:1;visibility:visible}
.drawer-panel{
  position:absolute;top:0;right:0;
  width:min(340px,86vw);
  height:100%;
  background:var(--ink);
  border-left:1px solid rgba(255,255,255,.08);
  padding:20px;
  display:flex;
  flex-direction:column;
  gap:18px;
  transform:translateX(12px);
  transition:transform 220ms ease-out;
}
.drawer.is-open .drawer-panel{transform:translateX(0)}
.drawer-head{display:flex;align-items:center;justify-content:space-between}
.drawer-close{
  width:36px;height:36px;border-radius:var(--r-btn);
  background:rgba(255,255,255,.06);border:1px solid rgba(255,255,255,.12);
  color:var(--on-dark);font-size:18px;line-height:1;
}
.drawer-grid{display:grid;grid-template-columns:1fr 1fr;gap:12px}
.drawer-card{
  display:block;
  padding:14px 12px;
  border-radius:var(--r-btn);
  background:var(--panel);
  border:1px solid rgba(255,255,255,.08);
  color:var(--on-dark);
  font-size:14px;
  transition:background var(--ease),border-color var(--ease),color var(--ease);
}
.drawer-card:hover{background:var(--brand-light);color:var(--brand-dark);border-color:var(--brand);text-decoration:none}
.drawer-card.is-active{background:var(--brand-light);color:var(--brand-dark);box-shadow:inset 3px 0 0 var(--brand)}
.drawer-foot{margin-top:auto}
.drawer-foot .btn-nav{width:100%;justify-content:center;height:44px}

@media (max-width:1023px){
  .nav-menu{display:none}
  .nav-toggle{display:inline-flex}
  .nav-side .btn-nav{display:none}
  .brand{margin-right:auto}
}

/* ---------- 页头（分类页2：居中排版） ---------- */
.page-head{
  padding:56px 0 40px;
  text-align:center;
}
.page-head .tag-row{display:flex;justify-content:center;gap:8px;margin-bottom:18px}
.page-head h1{
  font-size:40px;
  line-height:1.3;
  letter-spacing:.4px;
  max-width:820px;
  margin:0 auto 16px;
}
.page-head .lead{
  max-width:720px;
  margin:0 auto;
  color:var(--t2);
  font-size:17px;
  line-height:1.9;
}
.stat-row{
  display:flex;
  justify-content:center;
  align-items:center;
  flex-wrap:wrap;
  gap:12px;
  margin-top:26px;
  color:var(--t3);
  font-size:13px;
}
.stat-row .dot{width:4px;height:4px;border-radius:50%;background:var(--lime);box-shadow:0 0 0 3px rgba(198,242,78,.28)}
.stat-row b{color:var(--t1);font-size:15px;letter-spacing:.3px}
@media (max-width:767px){
  .page-head{padding:36px 0 28px}
  .page-head h1{font-size:28px}
  .page-head .lead{font-size:15.5px}
}

/* ---------- 通用标签 / 按钮 ---------- */
.tag{
  display:inline-flex;align-items:center;gap:6px;
  height:24px;
  padding:0 10px;
  border-radius:var(--r-tag);
  font-size:12px;
  letter-spacing:.3px;
  white-space:nowrap;
}
.tag-purple{background:var(--brand-light);color:var(--brand-dark)}
.tag-lime{background:var(--lime);color:var(--ink)}
.tag-outline{background:transparent;border:1px solid var(--line);color:var(--t2)}
.badge-count{
  display:inline-flex;align-items:center;justify-content:center;
  min-width:26px;height:22px;padding:0 8px;
  border-radius:11px;
  background:var(--panel);
  color:var(--lime);
  font-size:12px;
  letter-spacing:.4px;
}
.btn{
  display:inline-flex;align-items:center;justify-content:center;gap:8px;
  height:44px;
  padding:0 22px;
  border-radius:var(--r-btn);
  border:1px solid transparent;
  font-size:15px;
  font-weight:600;
  letter-spacing:.3px;
  transition:background var(--ease),color var(--ease),transform var(--ease),border-color var(--ease),box-shadow var(--ease);
}
.btn-primary{background:var(--brand);color:#fff}
.btn-primary:hover{background:var(--brand-dark);color:#fff;text-decoration:none;transform:translateY(-1px);box-shadow:0 10px 22px rgba(90,61,240,.32)}
.btn-primary:active{transform:translateY(0);filter:brightness(.94)}
.btn-ghost{background:transparent;border:1.5px solid var(--brand);color:var(--brand-dark)}
.btn-ghost:hover{background:var(--brand-light);color:var(--brand-dark);text-decoration:none;transform:translateY(-1px)}
.btn-sm{height:38px;padding:0 16px;font-size:14px}
.btn-text{
  display:inline-flex;align-items:center;gap:6px;
  font-size:14px;color:var(--brand-dark);font-weight:600;
  transition:color var(--ease)
}
.btn-text .arrow{transition:transform var(--ease)}
.btn-text:hover{color:var(--brand);text-decoration:none}
.btn-text:hover .arrow{transform:translateX(3px)}

/* ---------- 分组结构 ---------- */
.group{margin-bottom:56px}
.group-head{
  display:flex;
  align-items:flex-end;
  justify-content:space-between;
  gap:18px;
  padding-bottom:16px;
  margin-bottom:26px;
  border-bottom:1px solid var(--line);
}
.group-head h2{
  font-size:28px;
  line-height:1.4;
  padding-left:14px;
  position:relative;
}
.group-head h2::before{
  content:"";
  position:absolute;left:0;top:6px;bottom:6px;
  width:4px;border-radius:2px;background:var(--brand);
}
.group-head p{margin:0;color:var(--t2);font-size:14.5px;max-width:520px}
.card-grid{display:grid;grid-template-columns:repeat(2,1fr);gap:22px}
.tile{
  display:flex;
  flex-direction:column;
  background:var(--card);
  border:1px solid var(--line);
  border-radius:var(--r-card);
  padding:20px;
  box-shadow:var(--sh1);
  transition:transform var(--ease),box-shadow var(--ease),border-color var(--ease);
}
.tile:hover{transform:translateY(-2px);box-shadow:var(--sh2);border-color:rgba(90,61,240,.45)}
.tile:hover h3{color:var(--brand)}
.thumb{
  position:relative;
  width:100%;
  aspect-ratio:16/9;
  border-radius:14px;
  overflow:hidden;
  background:var(--brand-light);
  margin-bottom:16px;
}
.thumb img{width:100%;height:100%;object-fit:cover;transition:transform 220ms ease-out}
.tile:hover .thumb img{transform:scale(1.03)}
.thumb .corner{
  position:absolute;top:10px;left:10px;
  background:var(--lime);color:var(--ink);
  font-size:12px;height:24px;line-height:24px;padding:0 10px;border-radius:var(--r-tag);
  letter-spacing:.3px;
}
.tile h3{font-size:20px;line-height:1.5;margin-bottom:10px;transition:color var(--ease)}
.tile .desc{
  color:var(--t2);
  font-size:14.5px;
  line-height:1.8;
  margin:0 0 16px;
  display:-webkit-box;
  -webkit-line-clamp:2;
  -webkit-box-orient:vertical;
  overflow:hidden;
}
.tile-foot{
  margin-top:auto;
  display:flex;
  align-items:center;
  justify-content:space-between;
  gap:12px;
  padding-top:14px;
  border-top:1px solid var(--line);
  font-size:13px;
  color:var(--t3);
}
.tile-foot .arrow{color:var(--brand-dark);transition:transform var(--ease)}
.tile:hover .tile-foot .arrow{transform:translateX(3px)}
@media (max-width:767px){
  .card-grid{grid-template-columns:1fr;gap:16px}
  .thumb{aspect-ratio:auto;height:180px}
  .group-head{flex-direction:column;align-items:flex-start;gap:8px}
  .group-head h2{font-size:22px}
  .tile{padding:16px}
  .tile h3{font-size:18px}
}

/* 分隔说明条 */
.divider-note{
  display:flex;
  align-items:center;
  justify-content:space-between;
  gap:16px;
  background:#fff;
  border:1px solid var(--line);
  border-left:4px solid var(--lime);
  border-radius:14px;
  padding:16px 22px;
  margin:0 0 40px;
  color:var(--t2);
  font-size:14.5px;
  box-shadow:var(--sh1);
  transition:border-color var(--ease),transform var(--ease)
}
.divider-note:hover{border-color:rgba(90,61,240,.4);transform:translateX(2px)}
.divider-note span{color:var(--brand-dark);font-weight:600}

/* ---------- FAQ ---------- */
.faq-list{max-width:860px;margin:0 auto}
.faq-item{
  background:var(--card);
  border:1px solid var(--line);
  border-radius:var(--r-card);
  margin-bottom:14px;
  box-shadow:var(--sh1);
  transition:border-color var(--ease),box-shadow var(--ease);
  overflow:hidden;
}
.faq-item.is-open{border-color:var(--brand);box-shadow:var(--sh2)}
.faq-q{
  width:100%;
  display:flex;
  align-items:center;
  justify-content:space-between;
  gap:16px;
  background:transparent;
  border:0;
  padding:18px 22px;
  text-align:left;
  font-size:17px;
  font-weight:600;
  letter-spacing:.3px;
  line-height:1.6;
}
.faq-icon{
  position:relative;
  flex:0 0 22px;
  width:22px;height:22px;
  border-radius:50%;
  background:var(--brand-light);
}
.faq-icon::before,.faq-icon::after{
  content:"";position:absolute;left:50%;top:50%;
  background:var(--brand-dark);border-radius:2px;
  transform:translate(-50%,-50%);
  transition:transform var(--ease),opacity var(--ease)
}
.faq-icon::before{width:11px;height:2px}
.faq-icon::after{width:2px;height:11px}
.faq-item.is-open .faq-icon::after{transform:translate(-50%,-50%) rotate(90deg);opacity:0}
.faq-a{
  max-height:0;
  overflow:hidden;
  transition:max-height 220ms ease-out;
}
.faq-item.is-open .faq-a{max-height:340px}
.faq-a p{
  margin:0;
  padding:0 22px 20px;
  color:var(--t2);
  font-size:15px;
  line-height:1.9;
}

/* ---------- 浅色 CTA 条 ---------- */
.cta-bar{
  display:flex;
  align-items:center;
  justify-content:space-between;
  gap:24px;
  background:#fff;
  border:1px solid var(--line);
  border-radius:var(--r-lg);
  padding:30px 34px;
  box-shadow:var(--sh1);
  background-image:linear-gradient(120deg,rgba(237,233,255,.85),rgba(255,255,255,0) 62%);
}
.cta-bar h2{font-size:24px;line-height:1.45;margin-bottom:8px}
.cta-bar p{margin:0;color:var(--t2);font-size:15px;max-width:640px}
.cta-bar .cta-actions{display:flex;gap:12px;flex:0 0 auto}
@media (max-width:767px){
  .cta-bar{flex-direction:column;align-items:flex-start;padding:24px 20px}
  .cta-bar h2{font-size:20px}
  .cta-bar .cta-actions{width:100%}
  .cta-bar .cta-actions .btn{flex:1 1 auto}
}

/* ---------- 页脚 ---------- */
.site-footer{
  background:var(--ink);
  color:var(--on-dark-2);
  padding:56px 0 26px;
  border-top:1px solid rgba(255,255,255,.08);
}
.footer-grid{
  display:grid;
  grid-template-columns:1.6fr 1fr 1fr 1fr;
  gap:32px;
  padding-bottom:32px;
  border-bottom:1px solid rgba(255,255,255,.08);
}
.footer-brand{display:flex;align-items:center;gap:10px;color:var(--on-dark);font-weight:700;font-size:16px;margin-bottom:14px}
.footer-desc{font-size:14px;line-height:1.9;color:var(--on-dark-2);margin:0 0 14px}
.footer-contact{font-size:13px;line-height:1.9;color:var(--on-dark-2);margin:0}
.site-footer h3{
  color:var(--on-dark);
  font-size:14px;
  letter-spacing:.4px;
  margin-bottom:14px;
  font-weight:600;
}
.site-footer ul li{margin-bottom:10px}
.site-footer a{color:var(--on-dark-2);font-size:14px}
.site-footer a:hover{color:var(--lime);text-decoration:none}
.footer-bottom{
  display:flex;
  align-items:center;
  justify-content:space-between;
  gap:12px;
  flex-wrap:wrap;
  padding-top:22px;
  font-size:13px;
  color:var(--on-dark-2);
}
.footer-bottom a{color:var(--on-dark-2)}
@media (max-width:1023px){
  .footer-grid{grid-template-columns:1fr 1fr;gap:26px}
}
@media (max-width:567px){
  .footer-grid{grid-template-columns:1fr}
  .site-footer{padding:44px 0 22px}
}
@media (prefers-reduced-motion:reduce){
  *{transition:none !important;animation:none !important}
  .tile:hover,.btn:hover,.nav-item:hover{transform:none !important}
  .tile:hover .thumb img{transform:none !important}
}