/* roulang page: index */
:root{
  --c-primary:#2E2260;
  --c-primary-deep:#1E1746;
  --c-primary-light:#4A3AA8;
  --c-accent:#F2762E;
  --c-accent-light:#FFB27A;
  --c-accent-deep:#D45C16;
  --c-teal:#2FBFB0;
  --c-ink:#14121C;
  --c-text-2:#5A5766;
  --c-text-3:#8D8A99;
  --c-line:#E6E4EC;
  --c-bg:#FBFAF7;
  --c-bg-soft:#F2F0F7;
  --c-night:#16122B;
  --c-night-deep:#14121C;
  --c-success:#2F9E6B;
  --c-warn:#D64545;
  --radius-card:14px;
  --radius-img:12px;
  --radius-input:10px;
  --radius-btn:10px;
  --sd-1:0 1px 2px rgba(20,18,28,.06);
  --sd-2:0 10px 30px -12px rgba(46,34,96,.28);
  --brand-h:64px;
}
*,*::before,*::after{box-sizing:border-box}
html{-webkit-text-size-adjust:100%;scroll-behavior:smooth}
body{
  margin:0;
  font-family:"PingFang SC","Hiragino Sans GB","Microsoft YaHei","Source Han Sans SC",sans-serif;
  font-size:16px;
  line-height:1.9;
  color:var(--c-ink);
  background:var(--c-bg);
}
img{max-width:100%;display:block;height:auto}
a{color:inherit;text-decoration:none}
button,input{font:inherit;color:inherit}
button{cursor:pointer}
h1,h2,h3,h4{margin:0;font-weight:600;line-height:1.4}
h1{font-size:clamp(26px,3.2vw,40px);line-height:1.35}
h2{font-size:clamp(22px,2.2vw,28px);line-height:1.4}
h3{font-size:19px;line-height:1.5}
p{margin:0 0 1.15em}
p:last-child{margin-bottom:0}
ul,ol{margin:0;padding:0;list-style:none}
:focus-visible{outline:2px solid var(--c-teal);outline-offset:2px;border-radius:4px}
.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}
.container{width:100%;max-width:1200px;margin:0 auto;padding:0 32px}

/* ---------- 按钮 ---------- */
.btn{
  display:inline-flex;align-items:center;justify-content:center;gap:8px;
  padding:12px 22px;border-radius:var(--radius-btn);
  font-size:15px;font-weight:600;letter-spacing:.2px;
  border:1px solid transparent;background:none;
  transition:background-color .2s ease,color .2s ease,transform .16s ease,box-shadow .2s ease,border-color .2s ease;
}
.btn-primary{background:var(--c-accent);color:#fff;box-shadow:0 8px 22px -12px rgba(242,118,46,.9)}
.btn-primary:hover{background:var(--c-accent-deep);transform:translateY(-1px)}
.btn-primary:active{transform:scale(.98)}
.btn-outline{border-color:var(--c-primary);color:var(--c-primary)}
.btn-outline:hover{background:rgba(46,34,96,.08)}
.btn-outline:active{transform:scale(.98)}
.btn-ghost-light{border-color:rgba(255,255,255,.45);color:#fff}
.btn-ghost-light:hover{background:rgba(255,255,255,.12)}
.btn-pill{border-radius:999px;padding:13px 28px}
.link-arrow{display:inline-flex;align-items:center;gap:6px;font-size:14px;font-weight:600;color:var(--c-primary-light);border-bottom:1px solid transparent;transition:color .2s ease,border-color .2s ease}
.link-arrow:hover{color:var(--c-teal);border-bottom-color:var(--c-teal)}

/* ---------- 徽章 ---------- */
.badge{display:inline-flex;align-items:center;height:24px;padding:0 9px;border-radius:6px;font-size:12px;line-height:1;white-space:nowrap}
.badge-cat{background:rgba(46,34,96,.10);color:var(--c-primary);font-weight:600}
.badge-time{background:var(--c-bg-soft);color:var(--c-text-3)}
.badge-hot{background:rgba(242,118,46,.14);color:var(--c-accent-deep);font-weight:600}

/* ---------- 顶部导航 ---------- */
.site-header{
  position:sticky;top:0;z-index:100;
  background:rgba(251,250,247,.92);
  -webkit-backdrop-filter:blur(10px);backdrop-filter:blur(10px);
  border-bottom:1px solid transparent;
  transition:border-color .25s ease,box-shadow .25s ease;
}
.site-header.is-scrolled{border-bottom-color:var(--c-line);box-shadow:0 8px 24px -18px rgba(20,18,28,.55)}
.brand-inner{display:flex;align-items:center;gap:24px;height:var(--brand-h);transition:height .25s ease}
.site-header.is-scrolled .brand-inner{height:52px}
.logo{display:flex;align-items:center;gap:10px;flex:none}
.logo-mark{width:32px;height:32px;border-radius:9px;display:flex;align-items:center;justify-content:center;color:#fff;background:linear-gradient(135deg,var(--c-primary-light),var(--c-accent))}
.logo-text{font-size:17px;font-weight:700;letter-spacing:.4px;color:var(--c-primary);white-space:nowrap}
.search-box{flex:1;max-width:420px;display:flex;align-items:center;gap:8px;background:#fff;border:1px solid var(--c-line);border-radius:999px;padding:4px 4px 4px 16px;transition:border-color .2s ease,box-shadow .2s ease}
.search-box:focus-within{border-color:var(--c-teal);box-shadow:0 0 0 4px rgba(47,191,176,.14)}
.search-box input{flex:1;min-width:0;border:0;background:transparent;outline:none;font-size:14px;padding:8px 0}
.search-box input::placeholder{color:var(--c-text-3)}
.search-box button{border:0;background:var(--c-primary);color:#fff;border-radius:999px;padding:8px 18px;font-size:14px;font-weight:600;transition:background-color .2s ease}
.search-box button:hover{background:var(--c-primary-light)}
.brand-links{display:flex;align-items:center;gap:18px;font-size:14px;color:var(--c-text-2);flex:none}
.brand-links a{transition:color .2s ease}
.brand-links a:hover{color:var(--c-teal)}
.nav-toggle{display:none;width:40px;height:40px;border:1px solid var(--c-line);border-radius:10px;background:#fff;align-items:center;justify-content:center}
.nav-toggle span{display:block;width:16px;height:2px;background:var(--c-primary);position:relative}
.nav-toggle span::before,.nav-toggle span::after{content:"";position:absolute;left:0;width:16px;height:2px;background:var(--c-primary)}
.nav-toggle span::before{top:-5px}
.nav-toggle span::after{top:5px}

.channel-bar{border-top:1px solid var(--c-line);background:rgba(255,255,255,.55)}
.channel-inner{display:flex;align-items:center;justify-content:space-between;gap:24px}
.channel-list{display:flex;align-items:center;gap:28px;overflow-x:auto;scrollbar-width:none}
.channel-list::-webkit-scrollbar{display:none}
.channel-list li{flex:none}
.channel-list a{position:relative;display:inline-block;padding:14px 2px;font-size:15px;color:var(--c-text-2);transition:color .2s ease}
.channel-list a::before{content:"";position:absolute;left:0;right:0;bottom:0;height:2px;background:var(--c-primary-light);transform:scaleX(0);transform-origin:center;transition:transform .22s ease}
.channel-list a:hover{color:var(--c-primary)}
.channel-list a:hover::before{transform:scaleX(1)}
.channel-list a.active{color:var(--c-primary);font-weight:600}
.channel-list a.active::after{content:"";position:absolute;left:0;right:0;bottom:0;height:3px;border-radius:2px;background:var(--c-teal)}
.hot-chips{display:flex;align-items:center;gap:10px;overflow-x:auto;scrollbar-width:none;padding:10px 0;flex:none;max-width:46%}
.hot-chips::-webkit-scrollbar{display:none}
.hot-chips .chip{flex:none}
.chip{display:inline-flex;align-items:center;gap:6px;height:26px;padding:0 11px;border-radius:999px;background:#fff;border:1px solid var(--c-line);font-size:12.5px;color:var(--c-text-2);transition:border-color .2s ease,color .2s ease,transform .2s ease}
.chip:hover{border-color:var(--c-teal);color:var(--c-teal);transform:translateY(-1px)}
.chip .dot{width:5px;height:5px;border-radius:50%;background:var(--c-accent)}

/* ---------- 抽屉 ---------- */
.mobile-drawer{
  position:fixed;top:0;right:0;width:min(86vw,340px);height:100%;
  background:var(--c-bg);z-index:130;transform:translateX(105%);
  transition:transform .28s ease;padding:20px;overflow-y:auto;
  box-shadow:-18px 0 40px -24px rgba(20,18,28,.5);
}
.mobile-drawer.is-open{transform:translateX(0)}
.drawer-head{display:flex;align-items:center;justify-content:space-between;margin-bottom:18px}
.drawer-title{font-size:15px;font-weight:600;color:var(--c-primary)}
.drawer-close{width:34px;height:34px;border:1px solid var(--c-line);background:#fff;border-radius:9px;font-size:20px;line-height:1;color:var(--c-text-2)}
.drawer-search{display:flex;gap:8px;margin-bottom:20px}
.drawer-search input{flex:1;min-width:0;padding:10px 12px;border:1px solid var(--c-line);border-radius:var(--radius-input);background:#fff;outline:none}
.drawer-search input:focus{border-color:var(--c-teal);box-shadow:0 0 0 4px rgba(47,191,176,.14)}
.drawer-search button{border:0;border-radius:var(--radius-input);background:var(--c-primary);color:#fff;padding:0 16px;font-weight:600}
.drawer-list li{border-bottom:1px solid var(--c-line)}
.drawer-list a{display:block;padding:14px 2px;font-size:15px;color:var(--c-text-2)}
.drawer-list a.active{color:var(--c-primary);font-weight:600}
.drawer-sub{display:block;font-size:13px;color:var(--c-text-3);margin:22px 0 10px}
.drawer-mask{position:fixed;inset:0;background:rgba(20,18,28,.44);opacity:0;visibility:hidden;transition:opacity .25s ease,visibility .25s ease;z-index:120}
.drawer-mask.is-open{opacity:1;visibility:visible}

/* ---------- 首屏 ---------- */
.hero{
  position:relative;color:#fff;overflow:hidden;
  background-color:var(--c-night);
  background-image:linear-gradient(160deg,rgba(20,18,28,.92) 0%,rgba(30,23,70,.88) 52%,rgba(46,34,96,.86) 100%),url('/assets/images/backpic/back-1.png');
  background-size:cover;background-position:center;
}
.hero::after{
  content:"";position:absolute;inset:0;pointer-events:none;
  background-image:
    radial-gradient(1.6px 1.6px at 12% 24%,rgba(255,255,255,.6),transparent 62%),
    radial-gradient(1.6px 1.6px at 78% 18%,rgba(255,178,122,.65),transparent 62%),
    radial-gradient(1.4px 1.4px at 62% 72%,rgba(47,191,176,.55),transparent 62%),
    radial-gradient(1.4px 1.4px at 28% 82%,rgba(255,255,255,.42),transparent 62%);
}
.hero-inner{position:relative;z-index:2;padding:92px 32px 78px;max-width:1200px;margin:0 auto}
.hero-kicker{
  display:inline-flex;align-items:center;gap:8px;
  font-size:13px;letter-spacing:1.5px;color:var(--c-accent-light);
  background:rgba(255,255,255,.08);border:1px solid rgba(255,178,122,.35);
  border-radius:999px;padding:6px 14px;margin-bottom:22px;
}
.hero h1{max-width:820px;margin-bottom:18px;color:#fff}
.hero-sub{max-width:660px;font-size:17px;line-height:1.85;color:rgba(255,255,255,.78);margin-bottom:30px}
.hero-actions{display:flex;flex-wrap:wrap;gap:14px;margin-bottom:44px}
.hero-stats{
  display:grid;grid-template-columns:repeat(4,1fr);gap:20px;
  padding-top:28px;border-top:1px solid rgba(255,255,255,.14);
}
.hero-stats strong{display:block;font-size:27px;font-weight:600;color:#fff;line-height:1.2}
.hero-stats span{display:block;font-size:13px;color:rgba(255,255,255,.62);margin-top:4px}

/* ---------- 通用板块 ---------- */
.section{padding:88px 0}
.section-soft{background:var(--c-bg-soft)}
.section-night{background:var(--c-night);color:#fff}
.section-head{max-width:720px;margin-bottom:44px}
.section-head h2{margin-bottom:14px}
.section-head p{color:var(--c-text-2);font-size:16px}
.section-night .section-head p{color:rgba(255,255,255,.72)}
.eyebrow{display:inline-flex;align-items:center;gap:8px;font-size:13px;font-weight:600;color:var(--c-primary-light);letter-spacing:1px;margin-bottom:12px}
.eyebrow::before{content:"";width:18px;height:3px;border-radius:2px;background:var(--c-teal)}
.section-night .eyebrow{color:var(--c-accent-light)}
.split-head{display:flex;align-items:flex-end;justify-content:space-between;gap:24px;margin-bottom:36px}
.split-head .section-head{margin-bottom:0}

/* ---------- 痛点卡 ---------- */
.pain-grid{display:grid;grid-template-columns:repeat(2,1fr);gap:24px}
.pain-grid .pain-card:nth-child(even){transform:translateY(26px)}
.pain-card{
  background:#fff;border:1px solid var(--c-line);border-radius:var(--radius-card);
  padding:26px 26px 22px;box-shadow:var(--sd-1);
  transition:box-shadow .25s ease,transform .25s ease,border-color .25s ease;
}
.pain-card:hover{box-shadow:var(--sd-2);transform:translateY(-3px);border-color:rgba(46,34,96,.2)}
.pain-num{font-size:14px;font-weight:700;letter-spacing:1px;color:var(--c-accent);margin-bottom:12px}
.pain-card h3{margin-bottom:10px;color:var(--c-primary)}
.pain-card p{font-size:15px;color:var(--c-text-2);margin-bottom:16px}
.pain-bar{height:4px;border-radius:2px;background:linear-gradient(90deg,var(--c-teal),rgba(47,191,176,0))}

/* ---------- 解决方案 ---------- */
.flow-row{display:grid;grid-template-columns:1fr 1fr;gap:56px;align-items:center}
.flow-row + .flow-row{margin-top:72px}
.flow-row.reverse .flow-media{order:-1}
.flow-media{border-radius:var(--radius-img);overflow:hidden;box-shadow:var(--sd-2);aspect-ratio:16/10;background:var(--c-primary-deep)}
.flow-media img{width:100%;height:100%;object-fit:cover}
.flow-text h2{margin-bottom:14px}
.flow-text > p{color:var(--c-text-2);font-size:16px;margin-bottom:20px}
.check-list{margin-bottom:26px}
.check-list li{display:flex;gap:10px;align-items:flex-start;padding:9px 0;font-size:15.5px;color:var(--c-text-2);border-bottom:1px dashed var(--c-line)}
.check-list li:last-child{border-bottom:0}
.check-list svg{flex:none;margin-top:6px;color:var(--c-teal)}

/* ---------- 数据条 ---------- */
.metric-grid{display:grid;grid-template-columns:repeat(4,1fr);gap:24px}
.metric-card{background:rgba(255,255,255,.05);border:1px solid rgba(255,255,255,.12);border-radius:var(--radius-card);padding:26px 22px;transition:background-color .25s ease,transform .25s ease}
.metric-card:hover{background:rgba(255,255,255,.09);transform:translateY(-3px)}
.metric-card strong{display:block;font-size:clamp(30px,3.6vw,44px);font-weight:600;line-height:1.1;color:var(--c-accent-light)}
.metric-card:nth-child(2) strong,.metric-card:nth-child(4) strong{color:var(--c-teal)}
.metric-card span{display:block;margin-top:10px;font-size:14px;color:rgba(255,255,255,.72)}
.metric-note{margin-top:28px;font-size:14px;color:rgba(255,255,255,.6)}

/* ---------- 资讯列表 ---------- */
.news-grid{display:grid;grid-template-columns:repeat(2,1fr);gap:24px}
.news-card{
  display:grid;grid-template-columns:180px 1fr;gap:18px;
  background:#fff;border:1px solid var(--c-line);border-radius:var(--radius-card);
  padding:14px;box-shadow:var(--sd-1);
  transition:transform .25s ease,box-shadow .25s ease,border-color .25s ease;
}
.news-card:hover{transform:translateY(-2px);box-shadow:var(--sd-2);border-color:rgba(46,34,96,.2)}
.news-cover{aspect-ratio:3/2;border-radius:var(--radius-img);overflow:hidden;background:var(--c-bg-soft)}
.news-cover img{width:100%;height:100%;object-fit:cover;transition:transform .35s ease}
.news-card:hover .news-cover img{transform:scale(1.04)}
.news-body{display:flex;flex-direction:column;min-width:0}
.news-title{
  font-size:17px;font-weight:600;line-height:1.5;color:var(--c-ink);margin-bottom:8px;
  display:-webkit-box;-webkit-line-clamp:2;-webkit-box-orient:vertical;overflow:hidden;
  transition:color .2s ease;
}
.news-card:hover .news-title{color:var(--c-primary)}
.news-summary{
  font-size:14px;color:var(--c-text-2);line-height:1.75;margin-bottom:12px;
  display:-webkit-box;-webkit-line-clamp:2;-webkit-box-orient:vertical;overflow:hidden;
}
.news-meta{display:flex;align-items:center;gap:8px;margin-top:auto;font-size:12.5px;color:var(--c-text-3)}
.news-meta .sep{width:3px;height:3px;border-radius:50%;background:var(--c-text-3)}
.empty-state{
  grid-column:1/-1;text-align:center;background:#fff;border:1px dashed var(--c-line);
  border-radius:var(--radius-card);padding:52px 24px;color:var(--c-text-2);
}
.empty-state svg{color:var(--c-primary-light);margin:0 auto 14px}
.empty-state strong{display:block;font-size:17px;color:var(--c-ink);margin-bottom:6px}
.empty-state span{font-size:14px;color:var(--c-text-3)}

/* ---------- 证言 ---------- */
.quote-grid{display:grid;grid-template-columns:1.5fr 1fr 1fr;gap:22px;align-items:stretch}
.quote-card{
  position:relative;background:#fff;border:1px solid rgba(47,191,176,.35);
  border-radius:var(--radius-card);padding:28px 26px;box-shadow:var(--sd-1);
  display:flex;flex-direction:column;gap:14px;
}
.quote-card.lead{background:#fff;border-color:var(--c-teal);box-shadow:var(--sd-2)}
.quote-mark{font-size:40px;line-height:1;color:rgba(47,191,176,.5);font-weight:700}
.quote-card p{font-size:15.5px;color:var(--c-text-2);flex:1}
.quote-card.lead p{font-size:17px;color:var(--c-ink)}
.quote-who{font-size:13.5px;color:var(--c-text-3)}
.quote-who b{display:block;font-size:14.5px;color:var(--c-primary);font-weight:600}

/* ---------- 分类导览 ---------- */
.guide-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:24px}
.guide-card{
  display:block;background:#fff;border:1px solid var(--c-line);border-radius:var(--radius-card);
  padding:26px 24px;box-shadow:var(--sd-1);
  transition:transform .25s ease,box-shadow .25s ease,border-color .25s ease;
}
.guide-card:hover{transform:translateY(-4px);box-shadow:var(--sd-2);border-color:rgba(47,191,176,.5)}
.guide-icon{width:42px;height:42px;border-radius:12px;display:flex;align-items:center;justify-content:center;background:rgba(46,34,96,.08);color:var(--c-primary);margin-bottom:16px}
.guide-card h3{margin-bottom:10px;color:var(--c-primary)}
.guide-card p{font-size:14.5px;color:var(--c-text-2);margin-bottom:16px}
.guide-more{font-size:14px;font-weight:600;color:var(--c-primary-light)}
.guide-card:hover .guide-more{color:var(--c-teal)}

/* ---------- FAQ ---------- */
.faq-list{max-width:860px}
.faq-item{background:#fff;border:1px solid var(--c-line);border-radius:12px;margin-bottom:12px;overflow:hidden;transition:border-color .2s ease,box-shadow .2s ease}
.faq-item[open]{border-color:rgba(47,191,176,.5);box-shadow:var(--sd-1)}
.faq-item summary{
  list-style:none;cursor:pointer;padding:18px 22px;font-size:16.5px;font-weight:600;color:var(--c-ink);
  display:flex;align-items:center;justify-content:space-between;gap:16px;
}
.faq-item summary::-webkit-details-marker{display:none}
.faq-item summary::after{
  content:"";flex:none;width:9px;height:9px;margin-right:5px;
  border-right:2px solid var(--c-teal);border-bottom:2px solid var(--c-teal);
  transform:rotate(45deg);transition:transform .2s ease;
}
.faq-item[open] summary::after{transform:rotate(-135deg)}
.faq-body{padding:0 22px 20px;font-size:15px;line-height:1.85;color:var(--c-text-2);background:rgba(242,240,247,.55)}

/* ---------- 底部 CTA ---------- */
.cta-band{
  background:linear-gradient(120deg,var(--c-primary-deep) 0%,var(--c-primary) 48%,var(--c-accent-deep) 100%);
  color:#fff;border-radius:0;
}
.cta-inner{display:flex;align-items:center;justify-content:space-between;gap:32px;padding:56px 32px;max-width:1200px;margin:0 auto}
.cta-inner h2{color:#fff;margin-bottom:10px}
.cta-inner p{color:rgba(255,255,255,.82);font-size:15.5px;max-width:620px}
.cta-actions{display:flex;flex-wrap:wrap;gap:14px;flex:none}

/* ---------- 页脚 ---------- */
.site-footer{background:var(--c-night-deep);color:rgba(255,255,255,.72);padding:64px 0 28px}
.footer-cols{display:grid;grid-template-columns:1.6fr 1fr 1fr 1fr;gap:40px;padding-bottom:40px;border-bottom:1px solid rgba(255,255,255,.1)}
.footer-logo{display:flex;align-items:center;gap:10px;font-size:17px;font-weight:700;color:#fff;margin-bottom:16px}
.footer-brand p{font-size:14px;line-height:1.85;color:rgba(255,255,255,.6)}
.site-footer h4{font-size:15px;color:#fff;margin-bottom:16px;font-weight:600}
.footer-col li{margin-bottom:10px}
.footer-col a{font-size:14px;color:rgba(255,255,255,.66);transition:color .2s ease}
.footer-col a:hover{color:var(--c-teal)}
.tag-cloud{display:flex;flex-wrap:wrap;gap:8px}
.tag-cloud a{display:inline-flex;align-items:center;height:26px;padding:0 10px;border-radius:6px;font-size:12.5px;background:rgba(255,255,255,.07);color:rgba(255,255,255,.72);transition:background-color .2s ease,color .2s ease}
.tag-cloud a:hover{background:rgba(47,191,176,.18);color:var(--c-teal)}
.footer-bottom{display:flex;flex-wrap:wrap;gap:12px;justify-content:space-between;align-items:center;padding-top:22px;font-size:13px;color:rgba(255,255,255,.5)}

/* ---------- 响应式 ---------- */
@media (max-width:1199px){
  .container,.hero-inner,.cta-inner{padding-left:24px;padding-right:24px}
  .hot-chips{max-width:40%}
}
@media (max-width:991px){
  .section{padding:64px 0}
  .hero-inner{padding-top:68px;padding-bottom:58px}
  .brand-links{display:none}
  .nav-toggle{display:flex}
  .channel-bar{display:none}
  .search-box{max-width:100%}
  .pain-grid{grid-template-columns:1fr;gap:18px}
  .pain-grid .pain-card:nth-child(even){transform:none}
  .flow-row{grid-template-columns:1fr;gap:28px}
  .flow-row.reverse .flow-media{order:0}
  .flow-row + .flow-row{margin-top:52px}
  .metric-grid{grid-template-columns:repeat(2,1fr)}
  .news-grid{grid-template-columns:1fr}
  .quote-grid{grid-template-columns:1fr;gap:16px}
  .guide-grid{grid-template-columns:1fr 1fr}
  .footer-cols{grid-template-columns:1fr 1fr;gap:32px}
  .cta-inner{flex-direction:column;align-items:flex-start;padding:48px 24px}
}
@media (max-width:767px){
  body{font-size:16px}
  .container,.hero-inner,.cta-inner{padding-left:16px;padding-right:16px}
  .section{padding:56px 0}
  .brand-inner{height:58px;gap:14px}
  .site-header.is-scrolled .brand-inner{height:52px}
  .logo-text{font-size:15.5px}
  .search-box{display:none}
  .hero-inner{padding-top:56px;padding-bottom:48px}
  .hero-sub{font-size:15.5px}
  .hero-actions{gap:10px}
  .hero-actions .btn{width:100%}
  .hero-stats{grid-template-columns:1fr 1fr;gap:16px}
  .guide-grid{grid-template-columns:1fr}
  .news-card{grid-template-columns:1fr;gap:12px}
  .news-cover{aspect-ratio:16/9}
  .split-head{flex-direction:column;align-items:flex-start}
  .cta-actions{width:100%}
  .cta-actions .btn{width:100%}
}
@media (max-width:520px){
  .hero-stats strong{font-size:22px}
  .footer-cols{grid-template-columns:1fr;gap:28px}
  .cta-inner{padding:40px 16px}
}

/* roulang page: article */
:root{
  --star-indigo:#2E2260;
  --indigo-deep:#1E1746;
  --indigo-light:#4A3AA8;
  --star-orange:#F2762E;
  --orange-light:#FFB27A;
  --orange-deep:#D45C16;
  --orbit-teal:#2FBFB0;
  --ink:#14121C;
  --text-sub:#5A5766;
  --text-weak:#8D8A99;
  --line:#E6E4EC;
  --bg:#FBFAF7;
  --bg-soft:#F2F0F7;
  --night:#16122B;
  --night-soft:#1F1A3A;
  --success:#2F9E6B;
  --warn:#D64545;
  --radius-card:14px;
  --radius-img:12px;
  --radius-input:10px;
  --radius-btn:10px;
  --radius-badge:6px;
  --shadow-1:0 1px 2px rgba(20,18,28,.06);
  --shadow-2:0 10px 30px -12px rgba(46,34,96,.28);
  --s1:4px; --s2:8px; --s3:12px; --s4:16px; --s5:24px; --s6:32px; --s7:48px; --s8:64px; --s9:88px;
  --font: "PingFang SC","Hiragino Sans GB","Microsoft YaHei","Source Han Sans SC",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:16.5px;
  line-height:1.9;
  color:var(--ink);
  background:var(--bg);
  -webkit-font-smoothing:antialiased;
}
img{max-width:100%;display:block;}
a{color:var(--indigo-light);text-decoration:none;transition:color .18s ease;}
a:hover{color:var(--orbit-teal);}
button{font-family:inherit;cursor:pointer;}
input,textarea,select{font-family:inherit;font-size:15px;}
h1,h2,h3,h4{margin:0;font-weight:600;color:var(--ink);line-height:1.4;}
p{margin:0 0 1.15em;}
p:last-child{margin-bottom:0;}
ul,ol{margin:0 0 1.15em;padding-left:1.35em;}
.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;}
.container{max-width:1200px;margin:0 auto;padding:0 32px;width:100%;}
:focus-visible{outline:2px solid var(--orbit-teal);outline-offset:2px;border-radius:4px;}

/* ============ 导航 ============ */
.site-header{position:sticky;top:0;z-index:100;}
.brand-bar{background:var(--bg);border-bottom:1px solid transparent;transition:background .2s ease,border-color .2s ease,box-shadow .2s ease;}
.site-header.is-scrolled .brand-bar{
  background:rgba(251,250,247,.92);
  backdrop-filter:blur(10px);
  -webkit-backdrop-filter:blur(10px);
  border-bottom-color:var(--line);
  box-shadow:var(--shadow-1);
}
.brand-inner{display:flex;align-items:center;gap:24px;height:64px;transition:height .2s ease;}
.site-header.is-scrolled .brand-inner{height:52px;}
.logo{display:flex;align-items:center;gap:10px;color:var(--star-indigo);font-weight:700;font-size:17px;letter-spacing:.2px;flex-shrink:0;}
.logo:hover{color:var(--indigo-light);}
.logo-mark{width:32px;height:32px;border-radius:9px;display:flex;align-items:center;justify-content:center;color:#fff;background:linear-gradient(140deg,var(--indigo-light),var(--star-indigo));flex-shrink:0;}
.logo-text{white-space:nowrap;}
.search-box{display:flex;align-items:center;flex:1;max-width:420px;background:#fff;border:1px solid var(--line);border-radius:var(--radius-input);overflow:hidden;transition:border-color .18s ease,box-shadow .18s ease;}
.search-box:focus-within{border-color:var(--orbit-teal);box-shadow:0 0 0 3px rgba(47,191,176,.16);}
.search-box input{flex:1;border:0;background:transparent;padding:9px 14px;color:var(--ink);outline:none;min-width:0;}
.search-box input::placeholder{color:var(--text-weak);}
.search-box button{border:0;background:var(--star-indigo);color:#fff;padding:9px 18px;font-size:14px;font-weight:600;border-radius:0;transition:background .18s ease;}
.search-box button:hover{background:var(--indigo-light);}
.brand-links{display:flex;align-items:center;gap:18px;font-size:14px;flex-shrink:0;margin-left:auto;}
.brand-links a{color:var(--text-sub);}
.brand-links a:hover{color:var(--orbit-teal);}
.nav-toggle{display:none;width:40px;height:40px;border:1px solid var(--line);background:#fff;border-radius:var(--radius-btn);position:relative;flex-shrink:0;}
.nav-toggle span,.nav-toggle span::before,.nav-toggle span::after{position:absolute;left:50%;width:16px;height:2px;background:var(--star-indigo);border-radius:2px;transform:translateX(-50%);content:"";transition:.2s;}
.nav-toggle span{top:50%;margin-top:-1px;}
.nav-toggle span::before{top:-5px;}
.nav-toggle span::after{top:5px;}
.channel-bar{background:#fff;border-bottom:1px solid var(--line);}
.site-header.is-scrolled .channel-bar{box-shadow:0 6px 18px -14px rgba(46,34,96,.4);}
.channel-inner{display:flex;align-items:center;gap:24px;height:50px;}
.channel-list{display:flex;align-items:center;gap:22px;list-style:none;margin:0;padding:0;flex-shrink:0;}
.channel-list a{position:relative;display:inline-block;font-size:14.5px;color:var(--text-sub);padding:14px 1px;font-weight:400;}
.channel-list a::after{content:"";position:absolute;left:50%;right:50%;bottom:6px;height:2px;background:var(--orbit-teal);border-radius:2px;transition:left .2s ease,right .2s ease;}
.channel-list a:hover{color:var(--star-indigo);}
.channel-list a:hover::after{left:0;right:0;}
.channel-list a.active{color:var(--star-indigo);font-weight:600;}
.channel-list a.active::after{left:0;right:0;height:3px;bottom:4px;}
.hot-chips{display:flex;align-items:center;gap:10px;margin-left:auto;overflow-x:auto;white-space:nowrap;scrollbar-width:none;}
.hot-chips::-webkit-scrollbar{display:none;}
.chip{display:inline-flex;align-items:center;gap:6px;font-size:12.5px;color:var(--orange-deep);background:rgba(242,118,46,.1);border:1px solid rgba(242,118,46,.18);border-radius:999px;padding:4px 12px;transition:background .18s ease,color .18s ease;}
.chip:hover{background:rgba(242,118,46,.18);color:var(--orange-deep);}
.chip .dot{width:6px;height:6px;border-radius:50%;background:var(--star-orange);flex-shrink:0;}

/* ============ 页面头 ============ */
.page-hero{background:var(--night);color:#fff;position:relative;overflow:hidden;padding:var(--s7) 0 var(--s6);}
.page-hero::before{
  content:"";position:absolute;inset:0;
  background-image:
    radial-gradient(1.6px 1.6px at 12% 28%, rgba(255,255,255,.7) 50%, transparent 52%),
    radial-gradient(1.4px 1.4px at 32% 68%, rgba(255,255,255,.5) 50%, transparent 52%),
    radial-gradient(1.8px 1.8px at 58% 22%, rgba(255,178,122,.8) 50%, transparent 52%),
    radial-gradient(1.4px 1.4px at 78% 58%, rgba(255,255,255,.55) 50%, transparent 52%),
    radial-gradient(1.5px 1.5px at 90% 30%, rgba(47,191,176,.75) 50%, transparent 52%);
  opacity:.85;pointer-events:none;
}
.page-hero .container{position:relative;z-index:1;}
.crumbs{display:flex;align-items:center;gap:8px;font-size:13px;color:rgba(255,255,255,.66);overflow-x:auto;white-space:nowrap;scrollbar-width:none;margin-bottom:var(--s5);}
.crumbs::-webkit-scrollbar{display:none;}
.crumbs a{color:rgba(255,255,255,.8);}
.crumbs a:hover{color:var(--orbit-teal);}
.crumbs .sep{opacity:.5;}
.crumbs .now{color:rgba(255,255,255,.62);max-width:280px;overflow:hidden;text-overflow:ellipsis;white-space:nowrap;}
.article-head{max-width:860px;}
.article-head h1{
  font-size:clamp(26px,3.2vw,36px);
  line-height:1.35;
  color:#fff;
  margin-bottom:var(--s4);
  display:-webkit-box;-webkit-line-clamp:2;-webkit-box-orient:vertical;overflow:hidden;
}
.head-meta{display:flex;flex-wrap:wrap;align-items:center;gap:10px;font-size:13.5px;color:rgba(255,255,255,.66);}
.badge{display:inline-flex;align-items:center;height:26px;padding:0 10px;border-radius:var(--radius-badge);font-size:12.5px;line-height:1;}
.badge-cat{background:rgba(74,58,168,.35);color:#CFC7FF;border:1px solid rgba(207,199,255,.25);}
.badge-time{background:rgba(255,255,255,.08);color:rgba(255,255,255,.72);}
.badge-hot{background:rgba(242,118,46,.16);color:var(--orange-light);border:1px solid rgba(242,118,46,.3);}
.head-abstract{
  margin-top:var(--s5);
  font-size:15.5px;line-height:1.85;color:rgba(255,255,255,.78);
  border-left:3px solid var(--star-orange);
  padding-left:16px;
  display:-webkit-box;-webkit-line-clamp:3;-webkit-box-orient:vertical;overflow:hidden;
}

/* ============ 主体布局 ============ */
.main-wrap{padding:var(--s7) 0 var(--s8);}
.article-layout{display:grid;grid-template-columns:minmax(0,760px) 260px;gap:56px;justify-content:center;}
.article-card{background:#fff;border:1px solid var(--line);border-radius:var(--radius-card);box-shadow:var(--shadow-1);overflow:hidden;}
.cover-wrap{position:relative;aspect-ratio:16/9;background:var(--bg-soft);}
.cover-wrap img{width:100%;height:100%;object-fit:cover;}
.cover-mask{position:absolute;inset:0;background:linear-gradient(180deg,rgba(30,23,70,.12),rgba(30,23,70,.42));}
.article-body{padding:var(--s7) var(--s6) var(--s6);max-width:760px;}
.article-body h2{
  font-size:25px;line-height:1.45;margin:var(--s7) 0 var(--s4);
  padding-left:14px;border-left:4px solid var(--orbit-teal);
}
.article-body h2:first-child{margin-top:0;}
.article-body h3{font-size:19px;margin:var(--s6) 0 var(--s3);}
.article-body p{font-size:16.5px;line-height:1.9;color:#221F2E;}
.article-body a{text-decoration:underline;text-underline-offset:3px;}
.article-body ul,.article-body ol{padding-left:1.4em;}
.article-body li{margin-bottom:.5em;line-height:1.85;}
.article-body ul li::marker{color:var(--orbit-teal);}
.article-body ol li::marker{color:var(--star-orange);font-weight:600;}
.article-body blockquote{
  margin:var(--s5) 0;padding:18px 22px;background:var(--bg-soft);
  border-left:4px solid var(--star-orange);border-radius:0 var(--radius-card) var(--radius-card) 0;
  color:var(--text-sub);font-size:16px;line-height:1.85;
}
.article-body img{border-radius:var(--radius-img);margin:var(--s5) 0;width:100%;height:auto;}
.article-body figure{margin:var(--s5) 0;}
.article-body figcaption{font-size:13px;color:var(--text-weak);text-align:center;margin-top:8px;}
.article-body table{width:100%;border-collapse:separate;border-spacing:0;margin:var(--s5) 0;font-size:15px;border:1px solid var(--line);border-radius:var(--radius-card);overflow:hidden;}
.article-body th{background:var(--bg-soft);color:var(--star-indigo);font-weight:600;text-align:left;padding:12px 14px;border-bottom:1px solid var(--line);}
.article-body td{padding:12px 14px;border-bottom:1px solid var(--line);color:var(--text-sub);}
.article-body tr:last-child td{border-bottom:0;}
.article-body tbody tr:hover{background:rgba(74,58,168,.05);}
.article-body pre{background:#F4F3F8;border:1px solid var(--line);border-radius:var(--radius-img);padding:16px;overflow-x:auto;font-size:14px;line-height:1.7;}
.article-body code{font-family:ui-monospace,Menlo,Consolas,monospace;font-size:.92em;background:#F4F3F8;padding:2px 6px;border-radius:6px;}
.article-body pre code{background:none;padding:0;}
.table-scroll{overflow-x:auto;}
.tag-row{display:flex;flex-wrap:wrap;gap:10px;margin-top:var(--s6);padding-top:var(--s5);border-top:1px dashed var(--line);}
.tag{display:inline-flex;align-items:center;height:26px;padding:0 12px;border-radius:var(--radius-badge);font-size:12.5px;background:var(--bg-soft);color:var(--text-sub);border:1px solid var(--line);transition:.18s;}
.tag:hover{background:rgba(47,191,176,.12);color:#1F8B80;border-color:rgba(47,191,176,.35);}
.share-row{display:flex;align-items:center;gap:12px;margin-top:var(--s5);flex-wrap:wrap;}
.icon-btn{display:inline-flex;align-items:center;gap:8px;height:38px;padding:0 16px;border-radius:var(--radius-btn);border:1px solid var(--line);background:#fff;color:var(--star-indigo);font-size:14px;transition:.18s;}
.icon-btn:hover{border-color:var(--indigo-light);background:rgba(74,58,168,.06);color:var(--indigo-light);}
.icon-btn:active{transform:scale(.98);}
.copy-tip{font-size:13px;color:var(--success);opacity:0;transition:opacity .2s ease;}
.copy-tip.show{opacity:1;}

/* 目录侧栏 */
.side-col{align-self:start;position:sticky;top:130px;}
.side-card{background:#fff;border:1px solid var(--line);border-radius:var(--radius-card);padding:var(--s5);box-shadow:var(--shadow-1);}
.side-card + .side-card{margin-top:var(--s5);}
.side-title{font-size:14px;font-weight:600;color:var(--star-indigo);display:flex;align-items:center;gap:8px;margin-bottom:var(--s4);}
.side-title::before{content:"";width:3px;height:14px;border-radius:2px;background:var(--orbit-teal);}
.toc-list{list-style:none;margin:0;padding:0;font-size:14px;border-left:1px solid var(--line);}
.toc-list li{margin:0;}
.toc-list a{display:block;padding:7px 0 7px 14px;color:var(--text-sub);border-left:2px solid transparent;margin-left:-1px;line-height:1.6;}
.toc-list a:hover{color:var(--orbit-teal);border-left-color:var(--orbit-teal);}
.toc-list a.is-current{color:var(--star-indigo);font-weight:600;border-left-color:var(--star-orange);}
.side-note{font-size:13px;color:var(--text-weak);line-height:1.75;margin-top:var(--s4);}
.side-links{list-style:none;margin:0;padding:0;font-size:14px;}
.side-links li{border-bottom:1px dashed var(--line);}
.side-links li:last-child{border-bottom:0;}
.side-links a{display:block;padding:10px 0;color:var(--text-sub);}
.side-links a:hover{color:var(--star-indigo);}

/* 空态 */
.empty-state{background:var(--bg-soft);border:1px dashed var(--line);border-radius:var(--radius-card);padding:var(--s7) var(--s5);text-align:center;}
.empty-state svg{color:var(--indigo-light);opacity:.7;margin-bottom:var(--s4);}
.empty-state h2{font-size:20px;margin-bottom:var(--s3);}
.empty-state p{color:var(--text-sub);font-size:15px;}
.empty-state .btn{margin-top:var(--s5);}

/* ============ 按钮 ============ */
.btn{display:inline-flex;align-items:center;justify-content:center;gap:8px;height:44px;padding:0 24px;border-radius:var(--radius-btn);font-size:15px;font-weight:600;border:1px solid transparent;transition:transform .18s ease,background .18s ease,box-shadow .18s ease,color .18s ease;}
.btn:active{transform:scale(.98);}
.btn-primary{background:var(--star-orange);color:#fff;border-radius:999px;box-shadow:0 8px 22px -12px rgba(242,118,46,.75);}
.btn-primary:hover{background:var(--orange-deep);color:#fff;transform:translateY(-1px);}
.btn-ghost{background:transparent;color:var(--star-indigo);border-color:rgba(46,34,96,.28);}
.btn-ghost:hover{background:rgba(74,58,168,.08);color:var(--star-indigo);}
.btn-light{background:#fff;color:var(--star-indigo);}
.btn-light:hover{background:#fff;color:var(--indigo-light);transform:translateY(-1px);}
.link-arrow{display:inline-flex;align-items:center;gap:6px;font-size:14px;font-weight:600;color:var(--indigo-light);border-bottom:1px solid transparent;transition:.18s;}
.link-arrow:hover{color:var(--orbit-teal);border-bottom-color:var(--orbit-teal);}

/* ============ 相关推荐 ============ */
.related{padding:var(--s8) 0;background:var(--bg-soft);}
.section-head{display:flex;align-items:flex-end;justify-content:space-between;gap:24px;margin-bottom:var(--s6);flex-wrap:wrap;}
.section-head h2{font-size:26px;}
.section-head p{font-size:14.5px;color:var(--text-sub);margin:6px 0 0;}
.rel-grid{display:grid;grid-template-columns:repeat(3,minmax(0,1fr));gap:24px;}
.rel-card{display:flex;flex-direction:column;background:#fff;border:1px solid var(--line);border-radius:var(--radius-card);overflow:hidden;transition:transform .2s ease,box-shadow .2s ease,border-color .2s ease;}
.rel-card:hover{transform:translateY(-2px);box-shadow:var(--shadow-2);border-color:rgba(74,58,168,.25);}
.rel-thumb{aspect-ratio:3/2;overflow:hidden;background:var(--bg-soft);}
.rel-thumb img{width:100%;height:100%;object-fit:cover;transition:transform .35s ease;}
.rel-card:hover .rel-thumb img{transform:scale(1.04);}
.rel-body{padding:18px 20px 22px;display:flex;flex-direction:column;gap:10px;flex:1;}
.rel-body h3{font-size:17px;line-height:1.5;}
.rel-card:hover h3{color:var(--indigo-light);}
.rel-body p{font-size:14px;color:var(--text-sub);line-height:1.8;margin:0;display:-webkit-box;-webkit-line-clamp:2;-webkit-box-orient:vertical;overflow:hidden;}
.rel-foot{margin-top:auto;display:flex;align-items:center;gap:8px;font-size:12.5px;color:var(--text-weak);}

/* ============ CTA 带 ============ */
.cta-band{background:linear-gradient(115deg,var(--indigo-deep) 0%,var(--star-indigo) 58%,#5A3A2E 100%);color:#fff;padding:var(--s8) 0;}
.cta-inner{display:flex;align-items:center;justify-content:space-between;gap:40px;flex-wrap:wrap;}
.cta-inner h2{color:#fff;font-size:27px;line-height:1.45;max-width:620px;}
.cta-inner p{color:rgba(255,255,255,.78);font-size:15px;margin:10px 0 0;max-width:620px;}
.cta-actions{display:flex;align-items:center;gap:18px;flex-wrap:wrap;}
.cta-actions .link-arrow{color:#fff;}
.cta-actions .link-arrow:hover{color:var(--orange-light);border-bottom-color:var(--orange-light);}

/* ============ 页脚 ============ */
.site-footer{background:#14121C;color:rgba(255,255,255,.72);padding:var(--s8) 0 var(--s5);font-size:14.5px;}
.footer-cols{display:grid;grid-template-columns:1.6fr 1fr 1fr 1fr;gap:40px;}
.footer-logo{display:flex;align-items:center;gap:10px;color:#fff;font-weight:700;font-size:17px;margin-bottom:var(--s4);}
.footer-logo .logo-mark{background:linear-gradient(140deg,var(--star-orange),var(--indigo-light));}
.footer-brand p{font-size:13.5px;line-height:1.9;color:rgba(255,255,255,.6);max-width:360px;margin:0;}
.footer-col h4{color:#fff;font-size:15px;margin-bottom:var(--s4);font-weight:600;}
.footer-col ul{list-style:none;margin:0;padding:0;}
.footer-col li{margin-bottom:10px;}
.footer-col a{color:rgba(255,255,255,.66);font-size:13.5px;}
.footer-col a:hover{color:var(--orbit-teal);}
.tag-cloud{display:flex;flex-wrap:wrap;gap:8px;}
.tag-cloud a{display:inline-flex;align-items:center;height:26px;padding:0 10px;border-radius:var(--radius-badge);font-size:12.5px;background:rgba(255,255,255,.07);color:rgba(255,255,255,.72);border:1px solid rgba(255,255,255,.1);}
.tag-cloud a:hover{background:rgba(47,191,176,.16);color:var(--orbit-teal);border-color:rgba(47,191,176,.4);}
.footer-bottom{margin-top:var(--s7);padding-top:var(--s5);border-top:1px solid rgba(255,255,255,.1);display:flex;justify-content:space-between;gap:16px;flex-wrap:wrap;font-size:13px;color:rgba(255,255,255,.5);}
.footer-bottom p{margin:0;}

/* ============ 响应式 ============ */
@media (max-width:1199px){
  .container{padding:0 24px;}
  .article-layout{grid-template-columns:minmax(0,1fr);gap:40px;}
  .side-col{position:static;order:2;}
  .article-body{padding:var(--s6) var(--s5);}
  .rel-grid{grid-template-columns:repeat(2,minmax(0,1fr));}
  .footer-cols{grid-template-columns:1fr 1fr;gap:32px;}
}
@media (max-width:991px){
  .search-box{display:none;}
  .nav-toggle{display:block;margin-left:auto;}
  .brand-links{display:none;}
  .channel-bar{display:none;}
  body.menu-open .channel-bar{display:block;}
  body.menu-open .channel-inner{flex-direction:column;align-items:stretch;height:auto;padding:12px 0 18px;gap:12px;}
  body.menu-open .channel-list{flex-direction:column;align-items:stretch;gap:0;}
  body.menu-open .channel-list a{padding:11px 2px;border-bottom:1px dashed var(--line);}
  body.menu-open .channel-list a::after{display:none;}
  body.menu-open .hot-chips{margin-left:0;padding-top:8px;}
  .article-head h1{-webkit-line-clamp:3;}
}
@media (max-width:767px){
  body{font-size:16px;}
  .container{padding:0 16px;}
  .page-hero{padding:var(--s6) 0 var(--s5);}
  .main-wrap{padding:var(--s6) 0 var(--s7);}
  .article-body{padding:var(--s5) 18px;}
  .article-body h2{font-size:21px;}
  .article-body h3{font-size:17.5px;}
  .rel-grid{grid-template-columns:1fr;}
  .related{padding:var(--s7) 0;}
  .cta-band{padding:var(--s7) 0;}
  .cta-inner h2{font-size:22px;}
  .cta-actions{width:100%;}
  .cta-actions .btn{width:100%;}
  .footer-cols{grid-template-columns:1fr;}
  .footer-bottom{margin-top:var(--s6);}
}
@media (max-width:480px){
  .brand-inner{gap:12px;}
  .logo-text{font-size:15.5px;}
  .logo-mark{width:28px;height:28px;}
  .article-head h1{font-size:25px;}
  .head-abstract{font-size:14.5px;}
}

/* roulang page: category1 */
:root{
  --indigo:#2E2260;
  --indigo-deep:#1E1746;
  --indigo-light:#4A3AA8;
  --orange:#F2762E;
  --orange-light:#FFB27A;
  --orange-deep:#D45C16;
  --cyan:#2FBFB0;
  --ink:#14121C;
  --sub:#5A5766;
  --muted:#8D8A99;
  --line:#E6E4EC;
  --bg:#FBFAF7;
  --bg-soft:#F2F0F7;
  --night:#16122B;
  --night-deep:#100D22;
  --success:#2F9E6B;
  --warn:#D64545;
  --r-card:14px;
  --r-img:12px;
  --r-input:10px;
  --r-btn:10px;
  --r-badge:6px;
  --sh-1:0 1px 2px rgba(20,18,28,.06);
  --sh-2:0 10px 30px -12px rgba(46,34,96,.28);
  --container:1200px;
  --pad-x:32px;
  --sec-y:88px;
  --ease:cubic-bezier(.22,.61,.36,1);
}
*,*::before,*::after{box-sizing:border-box}
html{-webkit-text-size-adjust:100%;scroll-behavior:smooth}
body{
  margin:0;
  font-family:"PingFang SC","Hiragino Sans GB","Microsoft YaHei","Source Han Sans SC",sans-serif;
  font-size:16px;
  line-height:1.9;
  color:var(--ink);
  background:var(--bg);
}
img{max-width:100%;height:auto;display:block}
a{color:var(--indigo-light);text-decoration:none;transition:color .2s var(--ease)}
a:hover{color:var(--cyan)}
h1,h2,h3,h4{margin:0 0 16px;font-weight:600;line-height:1.4;color:var(--indigo-deep)}
h1{font-size:clamp(26px,3.2vw,40px);line-height:1.35;font-weight:700}
h2{font-size:clamp(22px,2.3vw,28px)}
h3{font-size:18px;line-height:1.5}
p{margin:0 0 1.15em}
p:last-child{margin-bottom:0}
ul,ol{margin:0 0 1.15em;padding-left:1.25em}
li{margin-bottom:8px}
button{font-family:inherit;cursor:pointer}
input{font-family:inherit}
:focus-visible{outline:2px solid var(--cyan);outline-offset:2px}
.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}
.container{max-width:var(--container);margin:0 auto;padding:0 var(--pad-x);width:100%}

/* ============ 按钮 ============ */
.btn{
  display:inline-flex;align-items:center;justify-content:center;gap:8px;
  padding:13px 26px;border-radius:var(--r-btn);border:1px solid transparent;
  font-size:15px;font-weight:600;line-height:1.4;letter-spacing:.01em;
  transition:transform .18s var(--ease),background-color .18s var(--ease),color .18s var(--ease),border-color .18s var(--ease),box-shadow .18s var(--ease);
  white-space:nowrap;
}
.btn-primary{background:var(--orange);color:#fff;box-shadow:0 6px 18px -10px rgba(212,92,22,.85)}
.btn-primary:hover{background:var(--orange-deep);color:#fff;transform:translateY(-1px)}
.btn-primary:active{transform:scale(.98)}
.btn-ghost{background:transparent;color:var(--indigo);border-color:rgba(46,34,96,.35)}
.btn-ghost:hover{background:rgba(74,58,168,.08);color:var(--indigo);border-color:var(--indigo-light)}
.btn-ghost:active{transform:scale(.98)}
.btn-outline-light{background:transparent;color:#F4F2FF;border-color:rgba(244,242,255,.42)}
.btn-outline-light:hover{background:rgba(244,242,255,.12);color:#fff;border-color:#fff}
.btn-pill{border-radius:999px}
.btn-block{width:100%}
.link-arrow{
  display:inline-flex;align-items:center;gap:6px;font-weight:600;color:var(--indigo-light);
  border-bottom:1px solid rgba(74,58,168,.35);padding-bottom:2px;
}
.link-arrow::after{content:"→";transition:transform .2s var(--ease)}
.link-arrow:hover{color:var(--cyan);border-bottom-color:var(--cyan)}
.link-arrow:hover::after{transform:translateX(3px)}

/* ============ 徽章 / 标签 ============ */
.badge{display:inline-flex;align-items:center;height:25px;padding:0 10px;border-radius:var(--r-badge);font-size:12.5px;font-weight:600;line-height:1}
.badge-cat{background:rgba(74,58,168,.12);color:var(--indigo-light)}
.badge-time{background:var(--bg-soft);color:var(--muted);font-weight:400}
.badge-hot{background:rgba(242,118,46,.14);color:var(--orange-deep)}
.tag-cloud{display:flex;flex-wrap:wrap;gap:8px}

/* ============ 头部导航 ============ */
.site-header{
  position:sticky;top:0;z-index:100;
  background:rgba(251,250,247,.92);
  backdrop-filter:blur(10px);
  -webkit-backdrop-filter:blur(10px);
  border-bottom:1px solid transparent;
  transition:border-color .25s var(--ease),box-shadow .25s var(--ease);
}
.site-header.is-scrolled{border-bottom-color:var(--line);box-shadow:0 1px 2px rgba(20,18,28,.05)}
.brand-bar{display:flex;align-items:center}
.brand-inner{
  display:flex;align-items:center;gap:22px;
  height:64px;
  transition:height .25s var(--ease);
}
.site-header.is-scrolled .brand-inner{height:52px}
.logo{display:inline-flex;align-items:center;gap:10px;flex-shrink:0}
.logo-mark{
  width:32px;height:32px;border-radius:10px;display:inline-flex;align-items:center;justify-content:center;
  background:linear-gradient(150deg,var(--indigo-light),var(--indigo-deep));color:#FFD9BC;flex-shrink:0;
}
.logo-text{font-size:18px;font-weight:700;color:var(--indigo-deep);letter-spacing:.01em;white-space:nowrap}
.logo:hover .logo-text{color:var(--indigo-light)}
.search-box{display:flex;align-items:center;flex:1;max-width:460px;gap:8px}
.search-box input{
  flex:1;min-width:0;height:40px;padding:0 14px;border:1px solid var(--line);border-radius:var(--r-input);
  background:#fff;font-size:14.5px;color:var(--ink);transition:border-color .2s var(--ease),box-shadow .2s var(--ease);
}
.search-box input::placeholder{color:var(--muted)}
.search-box input:focus{outline:none;border-color:var(--cyan);box-shadow:0 0 0 3px rgba(47,191,176,.16)}
.search-box button{
  height:40px;padding:0 18px;border:0;border-radius:var(--r-input);background:var(--indigo);color:#fff;
  font-size:14.5px;font-weight:600;transition:background-color .2s var(--ease)
}
.search-box button:hover{background:var(--indigo-light)}
.brand-links{display:flex;align-items:center;gap:18px;margin-left:auto;flex-shrink:0}
.brand-links a{font-size:14.5px;color:var(--sub);font-weight:500}
.brand-links a:hover{color:var(--cyan)}
.nav-toggle{
  display:none;margin-left:auto;width:42px;height:42px;border:1px solid var(--line);border-radius:var(--r-input);
  background:#fff;position:relative;
}
.nav-toggle span,.nav-toggle span::before,.nav-toggle span::after{
  position:absolute;left:50%;width:18px;height:2px;background:var(--indigo);border-radius:2px;transform:translateX(-50%);
}
.nav-toggle span{top:50%;margin-top:-1px}
.nav-toggle span::before{content:"";top:-6px;left:0;transform:none}
.nav-toggle span::after{content:"";top:6px;left:0;transform:none}

.channel-bar{border-top:1px solid var(--line)}
.channel-inner{display:flex;align-items:center;gap:20px;height:48px}
.channel-list{display:flex;align-items:center;gap:26px;list-style:none;margin:0;padding:0;flex-shrink:0}
.channel-list li{margin:0}
.channel-list a{
  position:relative;display:inline-block;padding:12px 0;font-size:15px;color:var(--sub);font-weight:500;
}
.channel-list a::after{
  content:"";position:absolute;left:50%;right:50%;bottom:6px;height:2px;background:var(--cyan);
  transition:left .22s var(--ease),right .22s var(--ease);
}
.channel-list a:hover{color:var(--indigo-deep)}
.channel-list a:hover::after{left:0;right:0}
.channel-list a.active{color:var(--indigo-deep);font-weight:600;box-shadow:inset 0 -3px 0 0 var(--cyan)}
.channel-list a.active::after{display:none}
.hot-chips{display:flex;align-items:center;gap:10px;overflow-x:auto;scrollbar-width:none;margin-left:auto;padding:4px 0}
.hot-chips::-webkit-scrollbar{display:none}
.chip{
  display:inline-flex;align-items:center;gap:6px;flex-shrink:0;
  height:28px;padding:0 12px;border-radius:999px;background:var(--bg-soft);
  font-size:13px;color:var(--sub);white-space:nowrap;transition:background-color .2s var(--ease),color .2s var(--ease);
}
.chip .dot{width:6px;height:6px;border-radius:50%;background:var(--cyan);flex-shrink:0}
.chip:hover{background:rgba(47,191,176,.14);color:var(--indigo-deep)}

/* ============ 面包屑 ============ */
.breadcrumb{display:flex;align-items:center;gap:8px;font-size:13.5px;color:var(--muted);overflow-x:auto;white-space:nowrap;scrollbar-width:none}
.breadcrumb::-webkit-scrollbar{display:none}
.breadcrumb a{color:rgba(255,255,255,.78)}
.breadcrumb a:hover{color:#fff}
.breadcrumb .sep{opacity:.5}
.breadcrumb .current{color:rgba(255,255,255,.95);max-width:220px;overflow:hidden;text-overflow:ellipsis;display:inline-block;vertical-align:bottom}

/* ============ Hero ============ */
.hero{
  position:relative;overflow:hidden;color:#fff;
  background:
    linear-gradient(115deg,rgba(16,13,34,.94) 0%,rgba(30,23,70,.88) 52%,rgba(46,34,96,.82) 100%),
    url("/assets/images/backpic/back-1.png") center/cover no-repeat;
  background-color:var(--night);
}
.hero::before{
  content:"";position:absolute;inset:0;pointer-events:none;
  background-image:
    radial-gradient(1.6px 1.6px at 12% 26%,rgba(255,255,255,.75),transparent 60%),
    radial-gradient(1.4px 1.4px at 32% 62%,rgba(255,178,122,.7),transparent 60%),
    radial-gradient(1.6px 1.6px at 58% 18%,rgba(255,255,255,.6),transparent 60%),
    radial-gradient(1.3px 1.3px at 76% 48%,rgba(47,191,176,.7),transparent 60%),
    radial-gradient(1.7px 1.7px at 90% 22%,rgba(255,255,255,.55),transparent 60%),
    radial-gradient(1.3px 1.3px at 68% 78%,rgba(255,255,255,.5),transparent 60%);
  opacity:.9;
}
.hero-inner{position:relative;z-index:2;padding:76px 0 72px;max-width:820px}
.hero-eyebrow{
  display:inline-flex;align-items:center;gap:8px;height:30px;padding:0 14px;border-radius:999px;
  background:rgba(47,191,176,.16);border:1px solid rgba(47,191,176,.4);
  color:#9DEFE5;font-size:13px;font-weight:600;margin-bottom:22px;
}
.hero h1{color:#fff;margin-bottom:20px}
.hero-sub{font-size:17px;line-height:1.9;color:rgba(255,255,255,.8);max-width:680px;margin-bottom:30px}
.hero-actions{display:flex;flex-wrap:wrap;gap:14px;margin-bottom:24px}
.hero-meta{display:flex;flex-wrap:wrap;gap:12px 26px;margin-top:34px;padding-top:26px;border-top:1px solid rgba(255,255,255,.14)}
.hero-meta div{font-size:13.5px;color:rgba(255,255,255,.66)}
.hero-meta strong{display:block;font-size:22px;font-weight:700;color:#fff;line-height:1.3}
.hero-meta .hl{color:var(--orange-light)}

/* ============ 通用板块 ============ */
.section{padding:var(--sec-y) 0}
.section-soft{background:var(--bg-soft)}
.section-dark{background:var(--night);color:rgba(255,255,255,.78)}
.section-dark h2,.section-dark h3{color:#fff}
.section-head{max-width:760px;margin-bottom:44px}
.section-head.center{margin-left:auto;margin-right:auto;text-align:center}
.section-head .kicker{
  display:inline-block;position:relative;padding-left:14px;margin-bottom:14px;
  font-size:13.5px;font-weight:600;color:var(--indigo-light);letter-spacing:.04em;
}
.section-head .kicker::before{content:"";position:absolute;left:0;top:50%;transform:translateY(-50%);width:4px;height:16px;border-radius:2px;background:var(--cyan)}
.section-dark .section-head .kicker{color:var(--cyan)}
.section-head p{color:var(--sub);font-size:16px}
.section-dark .section-head p{color:rgba(255,255,255,.72)}
.lead{font-size:17px;line-height:1.95;color:var(--sub);max-width:760px}

/* ============ 步骤时间线 ============ */
.steps-layout{display:grid;grid-template-columns:1.35fr .85fr;gap:56px;align-items:start}
.steps{position:relative;margin:0;padding:0 0 0 42px;list-style:none}
.steps::before{content:"";position:absolute;left:14px;top:10px;bottom:34px;width:2px;background:linear-gradient(180deg,var(--cyan),rgba(47,191,176,.15))}
.steps li{position:relative;margin:0 0 28px;padding:26px 28px;background:#fff;border:1px solid var(--line);border-radius:var(--r-card);box-shadow:var(--sh-1);transition:transform .2s var(--ease),box-shadow .2s var(--ease),border-color .2s var(--ease)}
.steps li:hover{transform:translateY(-2px);box-shadow:var(--sh-2);border-color:rgba(47,191,176,.45)}
.steps li:last-child{margin-bottom:0}
.steps li::before{
  content:"";position:absolute;left:-35px;top:32px;width:14px;height:14px;border-radius:50%;
  background:#fff;border:3px solid var(--cyan);
}
.step-num{display:block;font-size:13px;font-weight:700;color:var(--orange-deep);letter-spacing:.14em;margin-bottom:8px}
.steps h3{margin-bottom:10px}
.steps p{font-size:15.5px;color:var(--sub);margin-bottom:12px}
.step-note{display:flex;gap:8px;font-size:14px;color:var(--muted);border-top:1px dashed var(--line);padding-top:12px}
.step-note span{color:var(--cyan);font-weight:700}

.side-card{background:#fff;border:1px solid var(--line);border-radius:var(--r-card);padding:26px;box-shadow:var(--sh-1)}
.side-card + .side-card{margin-top:24px}
.side-card h3{font-size:17px;margin-bottom:16px}
.check-list{list-style:none;padding:0;margin:0}
.check-list li{position:relative;padding-left:26px;font-size:14.8px;color:var(--sub);margin-bottom:12px}
.check-list li:last-child{margin-bottom:0}
.check-list li::before{
  content:"";position:absolute;left:0;top:8px;width:14px;height:8px;
  border-left:2px solid var(--cyan);border-bottom:2px solid var(--cyan);transform:rotate(-45deg);
}
.side-figure{margin-top:24px;border-radius:var(--r-card);overflow:hidden;border:1px solid var(--line);box-shadow:var(--sh-1)}
.side-figure img{aspect-ratio:3/2;object-fit:cover;width:100%}
.side-figure figcaption{font-size:13px;color:var(--muted);background:#fff;padding:12px 16px}

/* ============ 阻碍卡（错位两列） ============ */
.obstacle-grid{display:grid;grid-template-columns:repeat(2,1fr);gap:24px}
.obstacle{
  position:relative;background:#fff;border:1px solid var(--line);border-radius:var(--r-card);
  padding:28px 28px 24px;box-shadow:var(--sh-1);transition:transform .2s var(--ease),box-shadow .2s var(--ease)
}
.obstacle:nth-child(2n){transform:translateY(22px)}
.obstacle:hover{box-shadow:var(--sh-2)}
.obstacle:nth-child(2n):hover{transform:translateY(20px)}
.obstacle .num{font-size:13px;font-weight:700;letter-spacing:.14em;color:var(--muted);display:block;margin-bottom:10px}
.obstacle h3{font-size:18px;margin-bottom:10px}
.obstacle p{font-size:15px;color:var(--sub);margin-bottom:16px}
.obstacle .bar{height:4px;border-radius:2px;background:linear-gradient(90deg,var(--cyan),rgba(47,191,176,0))}

/* ============ 场景列表 ============ */
.scene-list{display:grid;gap:18px}
.scene{
  display:flex;gap:20px;align-items:flex-start;padding:24px 26px;background:#fff;
  border:1px solid var(--line);border-left:4px solid var(--indigo-light);border-radius:var(--r-card);box-shadow:var(--sh-1);
  transition:border-color .2s var(--ease),box-shadow .2s var(--ease)
}
.scene:hover{border-left-color:var(--orange);box-shadow:var(--sh-2)}
.scene .idx{font-size:14px;font-weight:700;color:var(--indigo-light);flex-shrink:0;padding-top:3px}
.scene h3{font-size:17px;margin-bottom:6px}
.scene p{font-size:15px;color:var(--sub);margin:0}

/* ============ 数据条 ============ */
.stat-row{display:grid;grid-template-columns:repeat(4,1fr);gap:24px;margin-top:46px}
.stat{padding:24px 22px;background:rgba(255,255,255,.05);border:1px solid rgba(255,255,255,.12);border-radius:var(--r-card)}
.stat b{display:block;font-size:40px;font-weight:700;line-height:1.15;color:var(--cyan)}
.stat span{display:block;font-size:13.5px;color:rgba(255,255,255,.66);margin-top:8px}

/* ============ FAQ ============ */
.faq-wrap{max-width:860px;margin:0 auto}
.faq-item{background:#fff;border:1px solid var(--line);border-radius:var(--r-card);margin-bottom:14px;overflow:hidden;transition:box-shadow .2s var(--ease),border-color .2s var(--ease)}
.faq-item.open{box-shadow:var(--sh-2);border-color:rgba(47,191,176,.4)}
.faq-q{
  width:100%;display:flex;align-items:center;justify-content:space-between;gap:18px;
  padding:19px 24px;background:transparent;border:0;text-align:left;
  font-size:16.5px;font-weight:600;color:var(--indigo-deep);line-height:1.6;
}
.faq-q:hover{color:var(--indigo-light)}
.faq-icon{position:relative;width:20px;height:20px;flex-shrink:0}
.faq-icon::before,.faq-icon::after{
  content:"";position:absolute;left:50%;top:50%;background:var(--cyan);border-radius:2px;transform:translate(-50%,-50%);
}
.faq-icon::before{width:14px;height:2px}
.faq-icon::after{width:2px;height:14px;transition:transform .22s var(--ease),opacity .22s var(--ease)}
.faq-item.open .faq-icon::after{transform:translate(-50%,-50%) rotate(90deg);opacity:0}
.faq-a{max-height:0;overflow:hidden;transition:max-height .3s var(--ease)}
.faq-a-inner{padding:0 24px 22px;background:var(--bg-soft);border-top:1px solid var(--line);padding-top:18px}
.faq-a-inner p{font-size:15px;line-height:1.85;color:var(--sub)}

/* ============ CTA 带 ============ */
.cta-band{
  background:linear-gradient(115deg,var(--indigo-deep) 0%,var(--indigo) 58%,rgba(212,92,22,.72) 100%);
  color:#fff;padding:64px 0;
}
.cta-inner{display:flex;align-items:center;justify-content:space-between;gap:36px;flex-wrap:wrap}
.cta-text h2{color:#fff;margin-bottom:10px}
.cta-text p{color:rgba(255,255,255,.78);font-size:15.5px;margin:0;max-width:620px}
.cta-actions{display:flex;gap:14px;flex-wrap:wrap}

/* ============ 页脚 ============ */
.site-footer{background:var(--ink);color:rgba(255,255,255,.66);padding:64px 0 28px;font-size:14.5px}
.footer-cols{display:grid;grid-template-columns:1.5fr 1fr 1fr 1fr;gap:40px;padding-bottom:38px;border-bottom:1px solid rgba(255,255,255,.1)}
.footer-logo{display:flex;align-items:center;gap:10px;font-size:17px;font-weight:700;color:#fff;margin-bottom:16px}
.footer-brand p{color:rgba(255,255,255,.6);line-height:1.9;font-size:14.5px}
.footer-col h4{color:#fff;font-size:15px;margin-bottom:16px}
.footer-col ul{list-style:none;margin:0;padding:0}
.footer-col li{margin-bottom:10px}
.footer-col a{color:rgba(255,255,255,.66);font-size:14.5px}
.footer-col a:hover{color:var(--cyan)}
.tag-cloud a{display:inline-flex;height:26px;align-items:center;padding:0 11px;border-radius:var(--r-badge);background:rgba(255,255,255,.07);color:rgba(255,255,255,.7);font-size:13px}
.tag-cloud a:hover{background:rgba(47,191,176,.18);color:#fff}
.footer-bottom{display:flex;justify-content:space-between;gap:16px;flex-wrap:wrap;padding-top:22px;font-size:13.5px;color:rgba(255,255,255,.45)}
.footer-bottom p{margin:0}

/* ============ 响应式 ============ */
@media (max-width:1199px){
  :root{--pad-x:24px;--container:960px;--sec-y:64px}
  .steps-layout{grid-template-columns:1fr;gap:36px}
  .footer-cols{grid-template-columns:1fr 1fr;gap:32px}
}
@media (max-width:991px){
  .search-box{max-width:none}
  .brand-links{display:none}
  .nav-toggle{display:block}
  .channel-bar{
    position:fixed;top:0;right:0;bottom:0;width:288px;max-width:86vw;z-index:120;
    background:#fff;border-top:0;border-left:1px solid var(--line);
    transform:translateX(102%);transition:transform .28s var(--ease);
    overflow-y:auto;padding:22px 0 32px;box-shadow:-14px 0 40px -20px rgba(20,18,28,.35);
  }
  .channel-bar.open{transform:translateX(0)}
  .channel-inner{display:block;height:auto;padding:0 22px}
  .channel-list{flex-direction:column;align-items:stretch;gap:0;margin-bottom:22px}
  .channel-list a{padding:13px 0;border-bottom:1px solid var(--line);font-size:15.5px}
  .channel-list a.active{box-shadow:inset 3px 0 0 0 var(--cyan);padding-left:12px}
  .channel-list a::after{display:none}
  .hot-chips{margin-left:0;flex-wrap:wrap;overflow:visible}
  .obstacle-grid{grid-template-columns:1fr}
  .obstacle:nth-child(2n){transform:none}
  .obstacle:nth-child(2n):hover{transform:translateY(-2px)}
  .stat-row{grid-template-columns:repeat(2,1fr)}
  .hero-inner{padding:60px 0 56px}
}
@media (max-width:767px){
  :root{--pad-x:16px;--sec-y:56px}
  body{font-size:16px}
  .brand-inner{gap:14px}
  .search-box{display:none}
  .logo-text{font-size:16.5px}
  .hero-inner{padding:48px 0 46px;min-height:0}
  .hero-sub{font-size:15.8px}
  .hero-actions .btn{flex:1 1 100%}
  .hero-meta{gap:18px 22px}
  .steps{padding-left:30px}
  .steps::before{left:8px}
  .steps li{padding:22px 20px}
  .steps li::before{left:-28px;width:12px;height:12px}
  .scene{flex-direction:column;gap:8px}
  .faq-q{font-size:15.5px;padding:17px 18px}
  .faq-a-inner{padding:16px 18px 20px}
  .cta-inner{flex-direction:column;align-items:flex-start;gap:22px}
  .cta-actions{width:100%}
  .cta-actions .btn{flex:1 1 100%}
  .footer-cols{grid-template-columns:1fr;gap:28px}
  .footer-bottom{flex-direction:column;gap:8px}
}
@media (max-width:480px){
  .stat-row{grid-template-columns:1fr}
  .hero-eyebrow{font-size:12px}
  .btn{padding:12px 20px}
}

/* roulang page: category2 */
:root{
  --indigo-900:#1E1746;
  --indigo-700:#2E2260;
  --indigo-500:#4A3AA8;
  --amber-700:#D45C16;
  --amber-500:#F2762E;
  --amber-300:#FFB27A;
  --teal-500:#2FBFB0;
  --ink:#14121C;
  --ink-2:#5A5766;
  --ink-3:#8D8A99;
  --line:#E6E4EC;
  --bg:#FBFAF7;
  --bg-alt:#F2F0F7;
  --night:#16122B;
  --footer-bg:#14121C;
  --ok:#2F9E6B;
  --warn:#D64545;
  --r-card:14px;
  --r-img:12px;
  --r-input:10px;
  --r-btn:10px;
  --r-badge:6px;
  --shadow-1:0 1px 2px rgba(20,18,28,.06);
  --shadow-2:0 10px 30px -12px rgba(46,34,96,.28);
  --s1:4px; --s2:8px; --s3:12px; --s4:16px; --s5:24px; --s6:32px; --s7:48px; --s8:64px; --s9:96px;
  --font:"PingFang SC","Hiragino Sans GB","Microsoft YaHei","Source Han Sans SC",system-ui,-apple-system,"Segoe UI",Roboto,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:1.9;
  color:var(--ink);
  background:var(--bg);
  -webkit-font-smoothing:antialiased;
}
img{max-width:100%;display:block;border-radius:var(--r-img);}
a{color:var(--indigo-500);text-decoration:none;transition:color .2s ease;}
a:hover{color:var(--teal-500);}
h1,h2,h3,h4{margin:0;font-weight:600;line-height:1.4;color:var(--ink);}
h2{font-size:26px;letter-spacing:.2px;}
h3{font-size:19px;}
p{margin:0 0 1.15em;}
p:last-child{margin-bottom:0;}
ul,ol{margin:0;padding:0;list-style:none;}
button{font-family:inherit;cursor:pointer;border:0;background:none;color:inherit;}
input{font-family:inherit;}
table{border-collapse:collapse;width:100%;}
:focus-visible{outline:2px solid var(--teal-500);outline-offset:2px;border-radius:4px;}
.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;}
.container{max-width:1200px;margin:0 auto;padding:0 32px;}

/* ---------- header ---------- */
.site-header{position:sticky;top:0;z-index:100;}
.brand-bar{
  background:rgba(251,250,247,.92);
  backdrop-filter:blur(10px);
  -webkit-backdrop-filter:blur(10px);
  border-bottom:1px solid transparent;
  transition:border-color .25s ease,box-shadow .25s ease;
}
.site-header.is-scrolled .brand-bar{
  border-bottom-color:var(--line);
  box-shadow:0 1px 12px rgba(20,18,28,.05);
}
.brand-inner{
  display:flex;align-items:center;gap:var(--s5);
  height:64px;transition:height .25s ease;
}
.site-header.is-scrolled .brand-inner{height:52px;}
.logo{display:flex;align-items:center;gap:10px;flex-shrink:0;color:var(--indigo-700);}
.logo:hover{color:var(--indigo-700);}
.logo-mark{
  width:32px;height:32px;border-radius:10px;
  display:inline-flex;align-items:center;justify-content:center;
  background:linear-gradient(140deg,var(--indigo-500),var(--indigo-900));
  color:#fff;flex-shrink:0;
  box-shadow:0 4px 12px -6px rgba(46,34,96,.7);
}
.logo-text{font-size:17px;font-weight:700;letter-spacing:.4px;white-space:nowrap;}
.search-box{display:flex;align-items:center;gap:0;flex:1;max-width:400px;margin-left:auto;}
.search-box input{
  flex:1;height:38px;min-width:0;
  border:1px solid var(--line);border-right:0;
  border-radius:var(--r-input) 0 0 var(--r-input);
  background:#fff;padding:0 14px;font-size:14px;color:var(--ink);
  transition:border-color .2s ease,box-shadow .2s ease;
}
.search-box input::placeholder{color:var(--ink-3);}
.search-box input:focus{
  outline:none;border-color:var(--teal-500);
  box-shadow:0 0 0 3px rgba(47,191,176,.15);
}
.search-box button{
  height:38px;padding:0 18px;font-size:14px;font-weight:600;color:#fff;
  background:var(--indigo-700);
  border-radius:0 var(--r-input) var(--r-input) 0;
  transition:background .2s ease;
}
.search-box button:hover{background:var(--indigo-500);}
.brand-links{display:flex;gap:18px;font-size:14px;flex-shrink:0;}
.brand-links a{color:var(--ink-2);text-decoration:underline;text-underline-offset:4px;text-decoration-thickness:1px;text-decoration-color:var(--line);}
.brand-links a:hover{color:var(--teal-500);text-decoration-color:var(--teal-500);}
.nav-toggle{
  display:none;width:40px;height:40px;border-radius:10px;
  border:1px solid var(--line);background:#fff;position:relative;flex-shrink:0;
}
.nav-toggle span,.nav-toggle span::before,.nav-toggle span::after{
  position:absolute;left:50%;width:18px;height:2px;background:var(--ink);
  border-radius:2px;content:"";transform:translateX(-50%);
}
.nav-toggle span{top:50%;margin-top:-1px;}
.nav-toggle span::before{top:-6px;left:0;transform:none;}
.nav-toggle span::after{top:6px;left:0;transform:none;}

.channel-bar{background:#fff;border-bottom:1px solid var(--line);}
.channel-inner{display:flex;align-items:center;gap:var(--s5);}
.channel-list{display:flex;gap:2px;flex-shrink:0;}
.channel-list a{
  position:relative;display:block;height:52px;line-height:52px;
  padding:0 15px;font-size:15px;color:var(--ink-2);white-space:nowrap;
}
.channel-list a::after{
  content:"";position:absolute;left:15px;right:15px;bottom:0;height:3px;
  background:var(--teal-500);border-radius:3px 3px 0 0;
  transform:scaleX(0);transition:transform .25s ease;
}
.channel-list a:hover{color:var(--indigo-700);}
.channel-list a:hover::after{transform:scaleX(1);}
.channel-list a.active{color:var(--indigo-700);font-weight:600;}
.channel-list a.active::after{transform:scaleX(1);}
.hot-chips{
  display:flex;align-items:center;gap:10px;margin-left:auto;
  overflow-x:auto;white-space:nowrap;scrollbar-width:none;
  padding:8px 0;
}
.hot-chips::-webkit-scrollbar{display:none;}
.chip{
  display:inline-flex;align-items:center;gap:6px;
  height:26px;padding:0 11px;font-size:12.5px;color:var(--amber-700);
  background:#FFF2E8;border-radius:var(--r-badge);flex-shrink:0;
  transition:background .2s ease,color .2s ease;
}
.chip:hover{background:var(--amber-300);color:#fff;}
.chip .dot{width:5px;height:5px;border-radius:50%;background:var(--amber-500);flex-shrink:0;}
.chip:hover .dot{background:#fff;}

/* drawer */
.drawer-overlay{
  position:fixed;inset:0;background:rgba(20,18,28,.45);
  opacity:0;visibility:hidden;transition:opacity .25s ease,visibility .25s ease;z-index:110;
}
.drawer-overlay.is-open{opacity:1;visibility:visible;}
.drawer{
  position:fixed;top:0;right:0;bottom:0;width:min(82vw,340px);
  background:#fff;z-index:120;transform:translateX(100%);
  transition:transform .3s ease;padding:var(--s5) var(--s5) var(--s7);
  overflow-y:auto;box-shadow:-12px 0 30px -18px rgba(20,18,28,.4);
}
.drawer.is-open{transform:translateX(0);}
.drawer-head{display:flex;align-items:center;justify-content:space-between;margin-bottom:var(--s5);}
.drawer-title{font-size:16px;font-weight:700;color:var(--indigo-700);}
.drawer-close{width:34px;height:34px;border-radius:9px;border:1px solid var(--line);font-size:18px;line-height:1;color:var(--ink-2);}
.drawer .search-box{max-width:none;margin:0 0 var(--s5);}
.drawer-nav{display:flex;flex-direction:column;gap:2px;margin-bottom:var(--s5);}
.drawer-nav a{
  display:block;padding:11px 12px;border-radius:10px;font-size:15px;color:var(--ink-2);
}
.drawer-nav a:hover{background:var(--bg-alt);color:var(--indigo-700);}
.drawer-nav a.active{background:#EFEBFA;color:var(--indigo-700);font-weight:600;}
.drawer-sub{font-size:12px;letter-spacing:1px;color:var(--ink-3);margin:0 0 12px;font-weight:600;}

/* ---------- breadcrumb ---------- */
.crumb{display:flex;align-items:center;gap:8px;flex-wrap:wrap;font-size:13.5px;color:var(--ink-3);margin-bottom:var(--s4);}
.crumb a{color:var(--ink-3);}
.crumb a:hover{color:var(--teal-500);}
.crumb .sep{color:#C9C6D4;}
.crumb .now{color:var(--ink-2);font-weight:600;}

/* ---------- hero ---------- */
.cat-hero{
  position:relative;overflow:hidden;
  background:var(--night);color:#fff;
  padding:72px 0 64px;
}
.cat-hero::before{
  content:"";position:absolute;inset:0;
  background-image:
    radial-gradient(circle at 14% 22%,rgba(255,255,255,.55) 0 1.2px,transparent 1.6px),
    radial-gradient(circle at 68% 16%,rgba(255,255,255,.42) 0 1px,transparent 1.4px),
    radial-gradient(circle at 38% 74%,rgba(47,191,176,.5) 0 1.4px,transparent 1.8px),
    radial-gradient(circle at 86% 62%,rgba(242,118,46,.5) 0 1.2px,transparent 1.6px),
    linear-gradient(120deg,rgba(30,23,70,.94),rgba(22,18,43,.86));
  background-size:auto,auto,auto,auto,auto;
  opacity:1;
}
.cat-hero::after{
  content:"";position:absolute;inset:0;
  background-image:url("/assets/images/backpic/back-2.png");
  background-size:cover;background-position:center;
  opacity:.16;mix-blend-mode:screen;
}
.cat-hero .container{position:relative;z-index:2;}
.cat-hero .crumb,.cat-hero .crumb a,.cat-hero .crumb .now{color:rgba(255,255,255,.66);}
.cat-hero .crumb a:hover{color:var(--teal-500);}
.cat-hero h1{
  font-size:clamp(26px,3.2vw,40px);line-height:1.35;color:#fff;
  max-width:820px;margin-bottom:var(--s4);
}
.cat-hero .lead{
  font-size:17px;color:rgba(255,255,255,.78);max-width:720px;margin-bottom:var(--s5);
}
.hero-tags{display:flex;flex-wrap:wrap;gap:10px;margin-bottom:var(--s6);}
.hero-tags a{
  display:inline-flex;align-items:center;gap:7px;height:32px;padding:0 14px;
  border:1px solid rgba(255,255,255,.22);border-radius:999px;
  font-size:13.5px;color:rgba(255,255,255,.86);
  transition:border-color .2s ease,background .2s ease,color .2s ease;
}
.hero-tags a:hover{border-color:var(--teal-500);background:rgba(47,191,176,.14);color:#fff;}
.hero-stats{
  display:grid;grid-template-columns:repeat(3,1fr);gap:var(--s5);
  border-top:1px solid rgba(255,255,255,.14);padding-top:var(--s5);max-width:840px;
}
.hero-stats .num{font-size:30px;font-weight:700;color:var(--teal-500);line-height:1.2;}
.hero-stats .num.amber{color:var(--amber-300);}
.hero-stats .cap{font-size:13.5px;color:rgba(255,255,255,.62);margin-top:2px;}

/* ---------- sections ---------- */
.section{padding:88px 0;}
.section.alt{background:var(--bg-alt);}
.section.night{background:var(--night);color:#fff;}
.section.night h2,.section.night h3{color:#fff;}
.section.night p{color:rgba(255,255,255,.74);}
.sec-head{max-width:720px;margin-bottom:var(--s7);}
.sec-head .eyebrow{
  display:inline-block;font-size:12.5px;letter-spacing:1.6px;
  color:var(--teal-500);font-weight:600;margin-bottom:12px;
}
.sec-head h2{position:relative;padding-left:16px;margin-bottom:var(--s4);}
.sec-head h2::before{
  content:"";position:absolute;left:0;top:.22em;bottom:.22em;width:4px;
  border-radius:3px;background:var(--teal-500);
}
.sec-head p{color:var(--ink-2);max-width:720px;}

/* ---------- feature grid: 1 big + 2 small ---------- */
.feature-grid{display:grid;grid-template-columns:1.55fr 1fr;grid-template-rows:auto auto;gap:var(--s5);}
.card{
  background:#fff;border:1px solid var(--line);border-radius:var(--r-card);
  box-shadow:var(--shadow-1);padding:var(--s5);
  transition:transform .22s ease,box-shadow .22s ease,border-color .22s ease;
}
.card:hover{transform:translateY(-2px);box-shadow:var(--shadow-2);border-color:#DAD6E8;}
.card.big{grid-row:span 2;padding:0;overflow:hidden;display:flex;flex-direction:column;}
.card.big .card-media{aspect-ratio:16/9;overflow:hidden;position:relative;}
.card.big .card-media img{width:100%;height:100%;object-fit:cover;border-radius:0;transition:transform .4s ease;}
.card.big:hover .card-media img{transform:scale(1.03);}
.card.big .card-media::after{
  content:"";position:absolute;inset:0;
  background:linear-gradient(180deg,rgba(22,18,43,0) 40%,rgba(22,18,43,.72));
}
.card.big .card-body{padding:var(--s5) var(--s6) var(--s6);display:flex;flex-direction:column;gap:var(--s3);}
.icon-badge{
  width:44px;height:44px;border-radius:12px;display:flex;align-items:center;justify-content:center;
  background:#EFEBFA;color:var(--indigo-700);margin-bottom:var(--s4);flex-shrink:0;
}
.icon-badge.teal{background:#E4F7F5;color:#1E8D82;}
.icon-badge.amber{background:#FFF2E8;color:var(--amber-700);}
.card h3{margin-bottom:var(--s3);}
.card p{color:var(--ink-2);font-size:15px;}
.check-list{display:flex;flex-direction:column;gap:10px;margin-top:var(--s3);}
.check-list li{position:relative;padding-left:26px;font-size:14.5px;color:var(--ink-2);line-height:1.75;}
.check-list li::before{
  content:"";position:absolute;left:0;top:.55em;width:14px;height:8px;
  border-left:2px solid var(--teal-500);border-bottom:2px solid var(--teal-500);
  transform:rotate(-45deg);border-radius:1px;
}

/* ---------- mixed 2x2 ---------- */
.mix-grid{display:grid;grid-template-columns:repeat(2,1fr);gap:var(--s5);}
.mix-card{
  background:#fff;border:1px solid var(--line);border-radius:var(--r-card);
  padding:var(--s5) var(--s5) var(--s5);box-shadow:var(--shadow-1);
  display:flex;gap:var(--s5);
  transition:transform .22s ease,box-shadow .22s ease,border-color .22s ease;
}
.mix-card:hover{transform:translateY(-2px);box-shadow:var(--shadow-2);border-color:#DAD6E8;}
.mix-card .icon-badge{margin-bottom:0;}
.mix-card .mix-body{flex:1;min-width:0;}
.mix-card h3{font-size:17.5px;margin-bottom:8px;}
.mix-card p{font-size:14.5px;color:var(--ink-2);margin-bottom:10px;}
.mix-meta{display:flex;flex-wrap:wrap;gap:8px;}
.badge{
  display:inline-flex;align-items:center;height:25px;padding:0 10px;
  font-size:12.5px;border-radius:var(--r-badge);
}
.badge.cat{background:#EFEBFA;color:var(--indigo-700);}
.badge.time{background:var(--bg-alt);color:var(--ink-3);}
.badge.hot{background:#FFF2E8;color:var(--amber-700);}

/* ---------- compare table ---------- */
.table-wrap{
  overflow-x:auto;background:#fff;border:1px solid var(--line);
  border-radius:var(--r-card);box-shadow:var(--shadow-1);
}
.table-wrap table{min-width:640px;}
.table-wrap th{
  background:var(--bg-alt);color:var(--indigo-700);font-weight:600;
  font-size:14px;text-align:left;padding:15px 20px;white-space:nowrap;
}
.table-wrap td{
  padding:16px 20px;border-top:1px solid var(--line);
  font-size:14.5px;color:var(--ink-2);line-height:1.75;
}
.table-wrap tbody tr{transition:background .18s ease;}
.table-wrap tbody tr:hover{background:#FAF9FD;}
.table-wrap td:first-child{color:var(--ink);font-weight:600;}

/* ---------- steps timeline ---------- */
.steps{position:relative;padding-left:34px;}
.steps::before{
  content:"";position:absolute;left:9px;top:8px;bottom:8px;width:2px;
  background:linear-gradient(180deg,var(--teal-500),rgba(47,191,176,.14));
  border-radius:2px;
}
.step{position:relative;padding-bottom:var(--s6);}
.step:last-child{padding-bottom:0;}
.step::before{
  content:"";position:absolute;left:-33px;top:8px;width:12px;height:12px;
  border-radius:50%;background:#fff;border:3px solid var(--teal-500);
}
.step .step-no{
  font-size:12.5px;font-weight:700;letter-spacing:1.4px;color:var(--teal-500);
  display:block;margin-bottom:6px;
}
.step h3{font-size:18px;margin-bottom:8px;}
.step p{color:var(--ink-2);font-size:15px;max-width:700px;}

/* ---------- split image ---------- */
.split{display:grid;grid-template-columns:1fr 1fr;gap:var(--s7);align-items:center;}
.split .split-media{position:relative;border-radius:var(--r-card);overflow:hidden;box-shadow:var(--shadow-2);}
.split .split-media img{width:100%;aspect-ratio:4/3;object-fit:cover;border-radius:0;}
.split .split-media::after{
  content:"";position:absolute;inset:0;
  background:linear-gradient(200deg,rgba(30,23,70,.42),rgba(22,18,43,.62));
}
.split .split-media .media-cap{
  position:absolute;left:22px;bottom:20px;right:22px;z-index:2;color:#fff;
}
.split .split-media .media-cap strong{display:block;font-size:17px;margin-bottom:4px;}
.split .split-media .media-cap span{font-size:13.5px;color:rgba(255,255,255,.78);}

/* ---------- 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-card);
  overflow:hidden;transition:border-color .2s ease,box-shadow .2s ease;
}
.faq-item:hover{border-color:#D8D4E6;}
.faq-item.is-open{box-shadow:var(--shadow-1);border-color:#CFC9E4;}
.faq-q{
  width:100%;display:flex;align-items:center;justify-content:space-between;gap:16px;
  padding:19px 22px;font-size:16.5px;font-weight:600;color:var(--ink);text-align:left;
}
.faq-q:hover{color:var(--indigo-700);}
.faq-icon{position:relative;width:16px;height:16px;flex-shrink:0;}
.faq-icon::before,.faq-icon::after{
  content:"";position:absolute;background:var(--indigo-500);border-radius:2px;
  transition:transform .2s ease,opacity .2s ease;
}
.faq-icon::before{left:0;right:0;top:50%;height:2px;margin-top:-1px;}
.faq-icon::after{top:0;bottom:0;left:50%;width:2px;margin-left:-1px;}
.faq-item.is-open .faq-icon::after{transform:scaleY(0);opacity:0;}
.faq-item.is-open .faq-icon::before{background:var(--teal-500);}
.faq-a{max-height:0;overflow:hidden;transition:max-height .3s ease;}
.faq-a-inner{padding:0 22px 20px;background:#FCFBFF;}
.faq-a-inner p{font-size:15px;line-height:1.85;color:var(--ink-2);}

/* ---------- CTA band ---------- */
.cta-band{
  background:linear-gradient(118deg,var(--indigo-700),#3A2A72 48%,var(--amber-700));
  color:#fff;padding:64px 0;position:relative;overflow:hidden;
}
.cta-band::after{
  content:"";position:absolute;inset:0;
  background-image:radial-gradient(circle at 82% 26%,rgba(255,255,255,.42) 0 1.2px,transparent 1.6px),
                   radial-gradient(circle at 62% 78%,rgba(255,255,255,.3) 0 1px,transparent 1.4px);
  opacity:.7;
}
.cta-inner{position:relative;z-index:2;display:flex;align-items:center;justify-content:space-between;gap:var(--s6);flex-wrap:wrap;}
.cta-inner h2{color:#fff;font-size:24px;margin-bottom:10px;}
.cta-inner p{color:rgba(255,255,255,.82);font-size:15px;max-width:640px;}
.cta-actions{display:flex;align-items:center;gap:var(--s5);flex-wrap:wrap;}
.btn{
  display:inline-flex;align-items:center;justify-content:center;gap:8px;
  height:46px;padding:0 26px;font-size:15px;font-weight:600;
  border-radius:var(--r-btn);transition:transform .18s ease,background .2s ease,box-shadow .2s ease,color .2s ease,border-color .2s ease;
}
.btn-primary{background:var(--amber-500);color:#fff;border-radius:999px;box-shadow:0 10px 24px -14px rgba(242,118,46,.9);}
.btn-primary:hover{background:var(--amber-700);color:#fff;transform:translateY(-1px);}
.btn-primary:active{transform:scale(.98);}
.btn-ghost{border:1px solid var(--indigo-500);color:var(--indigo-700);background:transparent;border-radius:999px;}
.btn-ghost:hover{background:rgba(74,58,168,.08);color:var(--indigo-700);}
.btn-outline-light{border:1px solid rgba(255,255,255,.5);color:#fff;border-radius:999px;}
.btn-outline-light:hover{background:rgba(255,255,255,.14);color:#fff;}
.link-text{
  font-size:14.5px;color:var(--indigo-700);text-decoration:underline;
  text-underline-offset:5px;text-decoration-thickness:1px;text-decoration-color:#C6BFE6;
}
.link-text:hover{color:var(--teal-500);text-decoration-color:var(--teal-500);}
.link-text.light{color:#fff;text-decoration-color:rgba(255,255,255,.45);}
.link-text.light:hover{color:var(--teal-500);text-decoration-color:var(--teal-500);}

/* ---------- footer ---------- */
.site-footer{background:var(--footer-bg);color:rgba(255,255,255,.7);padding:64px 0 28px;font-size:14.5px;}
.footer-cols{display:grid;grid-template-columns:1.6fr 1fr 1fr 1fr;gap:var(--s7);}
.footer-logo{display:flex;align-items:center;gap:10px;color:#fff;font-size:17px;font-weight:700;margin-bottom:var(--s4);letter-spacing:.4px;}
.footer-brand p{color:rgba(255,255,255,.6);font-size:14px;line-height:1.85;}
.footer-col h4{color:#fff;font-size:15px;margin-bottom:var(--s4);font-weight:600;}
.footer-col ul{display:flex;flex-direction:column;gap:11px;}
.footer-col a{color:rgba(255,255,255,.66);font-size:14px;}
.footer-col a:hover{color:var(--teal-500);}
.tag-cloud{display:flex;flex-wrap:wrap;gap:9px;}
.tag-cloud a{
  display:inline-flex;align-items:center;height:27px;padding:0 11px;
  border:1px solid rgba(255,255,255,.16);border-radius:var(--r-badge);
  font-size:12.5px;color:rgba(255,255,255,.72);
  transition:border-color .2s ease,color .2s ease,background .2s ease;
}
.tag-cloud a:hover{border-color:var(--teal-500);color:var(--teal-500);background:rgba(47,191,176,.08);}
.footer-bottom{
  margin-top:var(--s7);padding-top:var(--s5);
  border-top:1px solid rgba(255,255,255,.1);
  display:flex;justify-content:space-between;gap:var(--s4);flex-wrap:wrap;
  font-size:13px;color:rgba(255,255,255,.5);
}

/* ---------- responsive ---------- */
@media (max-width:1199px){
  .container{padding:0 24px;}
  .feature-grid{grid-template-columns:1fr;}
  .card.big{grid-row:auto;}
  .split{gap:var(--s6);}
}
@media (max-width:991px){
  .brand-links{display:none;}
  .search-box{display:none;}
  .nav-toggle{display:block;}
  .channel-bar{display:none;}
  .section{padding:64px 0;}
  .mix-grid{grid-template-columns:1fr;}
  .footer-cols{grid-template-columns:1fr 1fr;gap:var(--s6);}
  .split{grid-template-columns:1fr;}
  .split .split-media{order:-1;}
}
@media (max-width:767px){
  .container{padding:0 16px;}
  body{font-size:16px;}
  .cat-hero{padding:48px 0 40px;}
  .cat-hero h1{font-size:27px;}
  .hero-stats{grid-template-columns:1fr 1fr;gap:var(--s4);}
  .hero-stats .num{font-size:24px;}
  .section{padding:56px 0;}
  h2{font-size:22px;}
  .sec-head{margin-bottom:var(--s6);}
  .card{padding:var(--s5) var(--s4);}
  .card.big .card-body{padding:var(--s5) var(--s4) var(--s5);}
  .mix-card{flex-direction:column;gap:var(--s4);}
  .cta-inner{flex-direction:column;align-items:flex-start;}
  .cta-actions{width:100%;}
  .cta-actions .btn{width:100%;}
  .faq-q{font-size:15.5px;padding:16px 18px;}
  .faq-a-inner{padding:0 18px 18px;}
}
@media (max-width:520px){
  .footer-cols{grid-template-columns:1fr;}
  .hero-stats{grid-template-columns:1fr;gap:var(--s4);}
  .logo-text{font-size:15.5px;}
  .table-wrap th,.table-wrap td{padding:13px 14px;}
}

/* roulang page: category3 */
:root{
  --purple:#2E2260;
  --purple-deep:#1E1746;
  --purple-light:#4A3AA8;
  --orange:#F2762E;
  --orange-light:#FFB27A;
  --orange-deep:#D45C16;
  --cyan:#2FBFB0;
  --ink:#14121C;
  --text-2:#5A5766;
  --text-3:#8D8A99;
  --line:#E6E4EC;
  --bg:#FBFAF7;
  --bg-soft:#F2F0F7;
  --night:#16122B;
  --ok:#2F9E6B;
  --warn:#D64545;
  --r-card:14px;
  --r-img:12px;
  --r-input:10px;
  --r-btn:10px;
  --r-chip:6px;
  --sh-1:0 1px 2px rgba(20,18,28,.06);
  --sh-2:0 10px 30px -12px rgba(46,34,96,.28);
  --sp-1:4px;
  --sp-2:8px;
  --sp-3:12px;
  --sp-4:16px;
  --sp-5:24px;
  --sp-6:32px;
  --sp-7:48px;
  --sp-8:64px;
  --sp-9:96px;
}
*,*::before,*::after{box-sizing:border-box}
html{-webkit-text-size-adjust:100%}
body{
  margin:0;
  font-family:"PingFang SC","Hiragino Sans GB","Microsoft YaHei","Source Han Sans SC",sans-serif;
  font-size:16px;
  line-height:1.9;
  color:var(--ink);
  background:var(--bg);
  -webkit-font-smoothing:antialiased;
}
img{max-width:100%;display:block;border-radius:var(--r-img)}
a{color:var(--purple-light);text-decoration:none;transition:color .2s ease}
a:hover{color:var(--cyan)}
h1,h2,h3,h4{margin:0;font-weight:600;line-height:1.4;color:var(--ink)}
h1{font-size:clamp(26px,3.2vw,40px);line-height:1.35;font-weight:700}
h2{font-size:clamp(22px,2.2vw,28px)}
h3{font-size:19px;line-height:1.5}
p{margin:0 0 1.15em}
ul,ol{margin:0;padding:0;list-style:none}
button{font-family:inherit}
input{font-family:inherit}
:focus-visible{outline:2px solid var(--cyan);outline-offset:2px}
.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}
.container{width:100%;max-width:1200px;margin:0 auto;padding:0 32px}

/* ---------- header ---------- */
.site-header{position:sticky;top:0;z-index:100;background:rgba(251,250,247,.92);backdrop-filter:blur(10px);-webkit-backdrop-filter:blur(10px);transition:box-shadow .25s ease}
.site-header.scrolled{box-shadow:0 1px 0 var(--line),0 6px 20px -14px rgba(20,18,28,.28)}
.brand-bar{transition:height .25s ease}
.brand-inner{display:flex;align-items:center;gap:24px;height:64px}
.site-header.scrolled .brand-inner{height:52px}
.logo{display:inline-flex;align-items:center;gap:10px;color:var(--purple);font-weight:700;font-size:17px;letter-spacing:.2px;flex-shrink:0}
.logo:hover{color:var(--purple-light)}
.logo-mark{display:inline-flex;align-items:center;justify-content:center;width:30px;height:30px;border-radius:9px;background:linear-gradient(140deg,var(--purple) 0%,var(--purple-light) 100%);color:#FFD9B8;flex-shrink:0}
.logo-text{white-space:nowrap}
.search-box{display:flex;align-items:center;gap:8px;flex:1;max-width:420px;margin-left:auto}
.search-box input{flex:1;height:40px;min-width:0;padding:0 14px;font-size:14px;color:var(--ink);background:#fff;border:1px solid var(--line);border-radius:var(--r-input);transition:border-color .2s ease,box-shadow .2s ease}
.search-box input::placeholder{color:var(--text-3)}
.search-box input:focus{outline:none;border-color:var(--cyan);box-shadow:0 0 0 3px rgba(47,191,176,.16)}
.search-box button{height:40px;padding:0 18px;border:0;border-radius:var(--r-btn);background:var(--purple);color:#fff;font-size:14px;cursor:pointer;transition:background .2s ease,transform .15s ease}
.search-box button:hover{background:var(--purple-light)}
.search-box button:active{transform:scale(.98)}
.brand-links{display:flex;align-items:center;gap:18px;font-size:14px;flex-shrink:0}
.brand-links a{color:var(--text-2)}
.brand-links a:hover{color:var(--cyan)}
.nav-toggle{display:none;width:40px;height:40px;border:1px solid var(--line);border-radius:var(--r-btn);background:#fff;cursor:pointer;position:relative;flex-shrink:0}
.nav-toggle span,.nav-toggle span::before,.nav-toggle span::after{position:absolute;left:11px;width:18px;height:2px;background:var(--purple);border-radius:2px;content:"";transition:transform .2s ease}
.nav-toggle span{top:19px}
.nav-toggle span::before{top:-6px;left:0}
.nav-toggle span::after{top:6px;left:0}
.channel-bar{border-top:1px solid var(--line);background:rgba(251,250,247,.9)}
.channel-inner{display:flex;align-items:center;gap:24px;height:50px}
.channel-list{display:flex;align-items:center;gap:26px;flex-shrink:0}
.channel-list a{position:relative;display:inline-block;padding:14px 0;font-size:15px;color:var(--text-2);font-weight:400}
.channel-list a::after{content:"";position:absolute;left:50%;right:50%;bottom:6px;height:2px;background:var(--cyan);transition:left .22s ease,right .22s ease}
.channel-list a:hover{color:var(--purple)}
.channel-list a:hover::after{left:0;right:0}
.channel-list a.active{color:var(--purple);font-weight:600}
.channel-list a.active::after{left:0;right:0;height:3px;border-radius:2px}
.hot-chips{display:flex;align-items:center;gap:10px;margin-left:auto;overflow-x:auto;scrollbar-width:none;-ms-overflow-style:none;white-space:nowrap;padding:4px 0}
.hot-chips::-webkit-scrollbar{display:none}
.chip{display:inline-flex;align-items:center;gap:6px;height:26px;padding:0 11px;font-size:12.5px;color:var(--purple);background:rgba(74,58,168,.08);border-radius:var(--r-chip);flex-shrink:0}
.chip .dot{width:5px;height:5px;border-radius:50%;background:var(--cyan)}
.chip:hover{background:rgba(47,191,176,.14);color:var(--purple-light)}

/* ---------- drawer ---------- */
.drawer{position:fixed;inset:0;z-index:200;display:none}
.drawer.open{display:block}
.drawer::before{content:"";position:absolute;inset:0;background:rgba(20,18,28,.45)}
.drawer-panel{position:absolute;top:0;right:0;bottom:0;width:min(340px,86vw);background:#fff;box-shadow:-12px 0 40px -20px rgba(20,18,28,.5);padding:20px;overflow-y:auto;animation:drawerIn .24s ease}
@keyframes drawerIn{from{transform:translateX(24px);opacity:.4}to{transform:translateX(0);opacity:1}}
.drawer-head{display:flex;align-items:center;justify-content:space-between;margin-bottom:16px}
.drawer-title{font-weight:600;font-size:16px;color:var(--purple)}
.drawer-close{width:34px;height:34px;border:1px solid var(--line);border-radius:9px;background:#fff;font-size:20px;line-height:1;color:var(--text-2);cursor:pointer}
.drawer-close:hover{color:var(--purple);border-color:var(--purple-light)}
.drawer-search{display:flex;gap:8px;margin-bottom:20px}
.drawer-search input{flex:1;min-width:0;height:40px;padding:0 12px;border:1px solid var(--line);border-radius:var(--r-input);font-size:14px}
.drawer-search input:focus{outline:none;border-color:var(--cyan);box-shadow:0 0 0 3px rgba(47,191,176,.16)}
.drawer-search button{height:40px;padding:0 16px;border:0;border-radius:var(--r-btn);background:var(--purple);color:#fff;font-size:14px;cursor:pointer}
.drawer-nav{display:flex;flex-direction:column;gap:2px;margin-bottom:22px}
.drawer-nav a{display:block;padding:12px 12px;border-radius:10px;color:var(--text-2);font-size:15px}
.drawer-nav a:hover{background:var(--bg-soft);color:var(--purple)}
.drawer-nav a.active{background:rgba(74,58,168,.09);color:var(--purple);font-weight:600}
.drawer-hot h4{font-size:14px;color:var(--text-3);margin-bottom:10px;font-weight:600}

/* ---------- buttons ---------- */
.btn{display:inline-flex;align-items:center;justify-content:center;gap:8px;height:48px;padding:0 26px;font-size:15px;font-weight:600;border-radius:999px;border:1px solid transparent;cursor:pointer;transition:transform .18s ease,background .2s ease,color .2s ease,box-shadow .2s ease,border-color .2s ease}
.btn-primary{background:var(--orange);color:#fff;box-shadow:0 8px 22px -12px rgba(242,118,46,.9)}
.btn-primary:hover{background:var(--orange-deep);color:#fff;transform:translateY(-1px)}
.btn-primary:active{transform:scale(.98)}
.btn-ghost{background:transparent;color:#fff;border-color:rgba(255,255,255,.42)}
.btn-ghost:hover{background:rgba(255,255,255,.12);color:#fff;border-color:rgba(255,255,255,.7)}
.btn-ghost:active{transform:scale(.98)}
.btn-outline{background:transparent;color:var(--purple);border-color:rgba(46,34,96,.32);height:44px;padding:0 22px;font-size:14px}
.btn-outline:hover{background:rgba(74,58,168,.08);color:var(--purple);border-color:var(--purple-light)}
.link-arrow{display:inline-flex;align-items:center;gap:6px;font-size:14.5px;font-weight:600;color:var(--purple-light);border-bottom:1px solid rgba(74,58,168,.35);padding-bottom:2px;line-height:1.6}
.link-arrow:hover{color:var(--cyan);border-color:var(--cyan)}

/* ---------- hero ---------- */
.hero{position:relative;overflow:hidden;background:var(--night);color:#fff}
.hero-bg{position:absolute;inset:0;background-image:linear-gradient(120deg,rgba(22,18,43,.94) 0%,rgba(30,23,70,.82) 52%,rgba(46,34,96,.72) 100%),url('/assets/images/backpic/back-2.png');background-size:cover;background-position:center;opacity:.96}
.hero-bg::after{content:"";position:absolute;inset:0;background-image:radial-gradient(1.6px 1.6px at 14% 22%,rgba(255,255,255,.75),transparent 60%),radial-gradient(1.4px 1.4px at 78% 16%,rgba(255,178,122,.7),transparent 60%),radial-gradient(1.2px 1.2px at 46% 74%,rgba(47,191,176,.7),transparent 60%),radial-gradient(1.6px 1.6px at 88% 68%,rgba(255,255,255,.5),transparent 60%);opacity:.8}
.hero-inner{position:relative;z-index:2;padding:88px 32px 72px;max-width:1120px}
.eyebrow{display:inline-flex;align-items:center;gap:8px;margin:0 0 16px;font-size:13px;letter-spacing:.16em;color:var(--orange-light);font-weight:600}
.eyebrow::before{content:"";width:22px;height:2px;background:var(--orange);border-radius:2px}
.hero h1{color:#fff;max-width:760px;margin-bottom:18px}
.hero-sub{max-width:660px;font-size:16.5px;line-height:1.9;color:rgba(255,255,255,.78);margin-bottom:32px}
.hero-actions{display:flex;flex-wrap:wrap;gap:14px;margin-bottom:52px}
.hero-stats{display:grid;grid-template-columns:repeat(4,minmax(0,1fr));gap:18px;border-top:1px solid rgba(255,255,255,.14);padding-top:26px}
.stat{display:flex;flex-direction:column;gap:4px}
.stat-num{font-size:clamp(26px,2.6vw,34px);font-weight:700;line-height:1.2;color:var(--cyan)}
.stat:nth-child(2) .stat-num{color:var(--orange-light)}
.stat-label{font-size:13px;color:rgba(255,255,255,.66);line-height:1.6}

/* ---------- sections ---------- */
.section{padding:88px 0}
.section.alt{background:var(--bg-soft)}
.section.dark{background:var(--night);color:#fff}
.section.dark h2,.section.dark h3{color:#fff}
.section-head{display:flex;align-items:flex-end;justify-content:space-between;gap:32px;margin-bottom:40px}
.section-head .eyebrow{color:var(--purple-light)}
.section-head .eyebrow::before{background:var(--cyan)}
.sec-title{margin-bottom:10px}
.sec-desc{max-width:620px;font-size:15.5px;color:var(--text-2);margin:0}
.section.dark .sec-desc{color:rgba(255,255,255,.72)}

/* ---------- filter bar ---------- */
.filter-bar{position:relative;margin:-32px 0 0;padding:0}
.filter-chips{display:flex;gap:10px;flex-wrap:wrap;background:#fff;border:1px solid var(--line);border-radius:var(--r-card);padding:14px 18px;box-shadow:var(--sh-1)}
.filter-chip{display:inline-flex;align-items:center;height:34px;padding:0 16px;border-radius:999px;font-size:14px;color:var(--text-2);background:var(--bg-soft);transition:background .2s ease,color .2s ease,transform .18s ease}
.filter-chip:hover{background:rgba(47,191,176,.14);color:var(--purple)}
.filter-chip.active{background:var(--purple);color:#fff;font-weight:600}
.filter-chip:active{transform:scale(.98)}

/* ---------- topic cards ---------- */
.topic-list{display:flex;flex-direction:column;gap:26px}
.topic-card{display:grid;grid-template-columns:320px 1fr;gap:0;background:#fff;border:1px solid var(--line);border-radius:var(--r-card);overflow:hidden;box-shadow:var(--sh-1);transition:transform .2s ease,box-shadow .2s ease,border-color .2s ease}
.topic-card:hover{transform:translateY(-2px);box-shadow:var(--sh-2);border-color:rgba(74,58,168,.28)}
.topic-media{position:relative;aspect-ratio:3/2;overflow:hidden;background:var(--purple-deep)}
.topic-media img{width:100%;height:100%;object-fit:cover;border-radius:0;transition:transform .35s ease}
.topic-card:hover .topic-media img{transform:scale(1.03)}
.topic-media::after{content:"";position:absolute;inset:0;background:linear-gradient(180deg,rgba(22,18,43,.06),rgba(22,18,43,.42))}
.topic-body{padding:26px 30px;display:flex;flex-direction:column;gap:12px}
.topic-meta{display:flex;flex-wrap:wrap;align-items:center;gap:10px}
.badge{display:inline-flex;align-items:center;height:25px;padding:0 10px;font-size:12.5px;border-radius:var(--r-chip);background:rgba(74,58,168,.1);color:var(--purple)}
.badge-time{background:var(--bg-soft);color:var(--text-3)}
.badge-hot{background:rgba(242,118,46,.14);color:var(--orange-deep)}
.topic-body h3{font-size:20px}
.topic-body p{font-size:15.5px;color:var(--text-2);margin:0}
.topic-points{display:flex;flex-direction:column;gap:8px;margin:2px 0 0}
.topic-points li{position:relative;padding-left:24px;font-size:14.5px;color:var(--text-2);line-height:1.75}
.topic-points li::before{content:"";position:absolute;left:0;top:8px;width:14px;height:8px;border-left:2px solid var(--cyan);border-bottom:2px solid var(--cyan);transform:rotate(-45deg);border-radius:1px}
.topic-foot{display:flex;align-items:center;justify-content:space-between;gap:16px;margin-top:6px;flex-wrap:wrap}

/* ---------- scene cards ---------- */
.scene-grid{display:grid;grid-template-columns:repeat(3,minmax(0,1fr));gap:24px}
.scene-card{background:#fff;border:1px solid var(--line);border-radius:var(--r-card);padding:28px 26px;box-shadow:var(--sh-1);transition:transform .2s ease,box-shadow .2s ease}
.scene-card:hover{transform:translateY(-2px);box-shadow:var(--sh-2)}
.scene-num{display:inline-flex;align-items:center;justify-content:center;width:38px;height:38px;border-radius:11px;background:rgba(47,191,176,.12);color:var(--purple);font-weight:700;font-size:15px;margin-bottom:16px}
.scene-card h3{margin-bottom:10px;font-size:18px}
.scene-card p{font-size:14.8px;color:var(--text-2);margin:0}
.scene-bar{display:block;height:3px;width:52px;border-radius:2px;background:var(--orange);margin-top:18px}

/* ---------- flow ---------- */
.flow-list{position:relative;display:flex;flex-direction:column;gap:22px;padding-left:6px}
.flow-list::before{content:"";position:absolute;left:21px;top:12px;bottom:12px;width:2px;background:linear-gradient(180deg,var(--cyan),rgba(47,191,176,.15))}
.flow-item{position:relative;display:grid;grid-template-columns:44px 1fr;gap:22px;align-items:start}
.flow-dot{position:relative;z-index:2;width:44px;height:44px;border-radius:50%;background:#fff;border:2px solid var(--cyan);color:var(--purple);display:flex;align-items:center;justify-content:center;font-weight:700;font-size:15px}
.flow-body{background:#fff;border:1px solid var(--line);border-radius:var(--r-card);padding:22px 26px;box-shadow:var(--sh-1)}
.flow-body h3{font-size:17.5px;margin-bottom:8px}
.flow-body p{font-size:15px;color:var(--text-2);margin:0}

/* ---------- rank ---------- */
.rank-list{display:flex;flex-direction:column;gap:0;background:#1D1836;border:1px solid rgba(255,255,255,.09);border-radius:var(--r-card);overflow:hidden}
.rank-item{display:grid;grid-template-columns:52px 1fr auto;gap:18px;align-items:center;padding:20px 24px;border-bottom:1px solid rgba(255,255,255,.08);transition:background .2s ease}
.rank-item:last-child{border-bottom:0}
.rank-item:hover{background:rgba(255,255,255,.05)}
.rank-no{font-size:22px;font-weight:700;color:rgba(255,255,255,.3);line-height:1}
.rank-item:nth-child(1) .rank-no{color:var(--orange)}
.rank-item:nth-child(2) .rank-no{color:var(--cyan)}
.rank-item:nth-child(3) .rank-no{color:var(--orange-light)}
.rank-title{font-size:16px;font-weight:600;color:#fff;margin-bottom:4px}
.rank-desc{font-size:13.5px;color:rgba(255,255,255,.62);line-height:1.7;margin:0}
.rank-link{font-size:13.5px;color:var(--cyan);white-space:nowrap}
.rank-link:hover{color:var(--orange-light)}

/* ---------- 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-card);overflow:hidden;transition:border-color .2s ease,box-shadow .2s ease}
.faq-item.open{border-color:rgba(47,191,176,.5);box-shadow:var(--sh-1)}
.faq-q{width:100%;display:flex;align-items:center;justify-content:space-between;gap:20px;padding:18px 24px;background:none;border:0;text-align:left;font-size:16.5px;font-weight:600;color:var(--ink);cursor:pointer;transition:color .2s ease}
.faq-q:hover{color:var(--purple)}
.faq-icon{position:relative;flex-shrink:0;width:22px;height:22px;border-radius:6px;background:rgba(74,58,168,.08)}
.faq-icon::before,.faq-icon::after{content:"";position:absolute;left:6px;top:10px;width:10px;height:2px;background:var(--purple);border-radius:2px;transition:transform .2s ease}
.faq-icon::after{transform:rotate(90deg)}
.faq-item.open .faq-icon::after{transform:rotate(0deg)}
.faq-a{max-height:0;overflow:hidden;transition:max-height .28s ease;background:var(--bg-soft)}
.faq-inner{padding:18px 24px 20px;font-size:15px;color:var(--text-2);line-height:1.85}

/* ---------- cta ---------- */
.cta-band{background:linear-gradient(105deg,var(--purple-deep) 0%,var(--purple) 55%,#7A3E22 100%);color:#fff}
.cta-inner{display:flex;align-items:center;justify-content:space-between;gap:32px;padding:56px 0;flex-wrap:wrap}
.cta-inner h2{color:#fff;margin-bottom:8px}
.cta-inner p{color:rgba(255,255,255,.78);font-size:15.5px;margin:0;max-width:600px}
.cta-actions{display:flex;align-items:center;gap:20px;flex-wrap:wrap}
.cta-actions .link-arrow{color:#fff;border-color:rgba(255,255,255,.5)}
.cta-actions .link-arrow:hover{color:var(--orange-light);border-color:var(--orange-light)}

/* ---------- footer ---------- */
.site-footer{background:#14121C;color:rgba(255,255,255,.7);padding:64px 0 28px;margin-top:0}
.footer-cols{display:grid;grid-template-columns:1.5fr 1fr 1fr 1fr;gap:40px;padding-bottom:40px;border-bottom:1px solid rgba(255,255,255,.1)}
.footer-logo{display:inline-flex;align-items:center;gap:10px;font-size:17px;font-weight:700;color:#fff;margin-bottom:16px}
.footer-brand p{font-size:14px;line-height:1.9;color:rgba(255,255,255,.62);margin:0}
.footer-col h4{font-size:15px;color:#fff;margin-bottom:16px;font-weight:600}
.footer-col ul{display:flex;flex-direction:column;gap:10px}
.footer-col ul a{font-size:14px;color:rgba(255,255,255,.66)}
.footer-col ul a:hover{color:var(--cyan)}
.tag-cloud{display:flex;flex-wrap:wrap;gap:10px}
.tag-cloud a{display:inline-flex;align-items:center;height:28px;padding:0 12px;font-size:13px;border-radius:var(--r-chip);background:rgba(255,255,255,.08);color:rgba(255,255,255,.75)}
.tag-cloud a:hover{background:rgba(47,191,176,.18);color:#fff}
.footer-bottom{display:flex;align-items:center;justify-content:space-between;gap:16px;padding-top:22px;flex-wrap:wrap}
.footer-bottom p{margin:0;font-size:13px;color:rgba(255,255,255,.5)}

/* ---------- responsive ---------- */
@media (max-width:1199px){
  .container{max-width:960px}
  .topic-card{grid-template-columns:280px 1fr}
  .hero-inner{max-width:960px}
}
@media (max-width:991px){
  .container{padding:0 24px}
  .section{padding:64px 0}
  .brand-inner{height:60px;gap:16px}
  .search-box{max-width:320px}
  .brand-links{display:none}
  .nav-toggle{display:block}
  .channel-bar{border-top:1px solid var(--line)}
  .channel-inner{height:auto;flex-wrap:wrap;padding-top:6px;padding-bottom:6px;gap:12px}
  .channel-list{gap:20px;flex-wrap:wrap}
  .hot-chips{width:100%;margin-left:0;padding-bottom:8px}
  .hero-inner{padding:64px 24px 56px}
  .hero-stats{grid-template-columns:repeat(2,minmax(0,1fr));gap:22px}
  .scene-grid{grid-template-columns:repeat(2,minmax(0,1fr))}
  .footer-cols{grid-template-columns:1fr 1fr;gap:32px}
  .section-head{flex-direction:column;align-items:flex-start;gap:14px}
}
@media (max-width:767px){
  body{font-size:16px;line-height:1.85}
  .container{padding:0 16px}
  .section{padding:56px 0}
  .search-box{display:none}
  .brand-inner{height:56px}
  .site-header.scrolled .brand-inner{height:52px}
  .logo-text{font-size:16px}
  .hero{min-height:auto}
  .hero-inner{padding:52px 16px 48px}
  .hero h1{font-size:27px}
  .hero-sub{font-size:15.5px;margin-bottom:26px}
  .hero-actions .btn{width:100%}
  .hero-actions{margin-bottom:34px}
  .topic-card{grid-template-columns:1fr}
  .topic-media{aspect-ratio:16/9}
  .topic-body{padding:22px 20px}
  .scene-grid{grid-template-columns:1fr}
  .flow-item{grid-template-columns:36px 1fr;gap:16px}
  .flow-dot{width:36px;height:36px;font-size:14px}
  .flow-list::before{left:17px}
  .flow-body{padding:18px 18px}
  .rank-item{grid-template-columns:36px 1fr;padding:16px 18px;gap:12px}
  .rank-link{grid-column:2;justify-self:start}
  .cta-inner{padding:44px 0;flex-direction:column;align-items:flex-start}
  .cta-actions .btn{width:100%}
  .footer-cols{grid-template-columns:1fr;gap:28px}
  .footer-bottom{flex-direction:column;align-items:flex-start}
  .filter-chips{padding:12px 14px;gap:8px}
  .filter-chip{height:32px;padding:0 13px;font-size:13.5px}
}
@media (max-width:480px){
  .container{padding:0 14px}
  .hero-stats{grid-template-columns:1fr 1fr;gap:18px}
  .stat-num{font-size:26px}
  .btn{height:46px;padding:0 20px;font-size:14.5px}
  .sec-title{font-size:21px}
  .faq-q{padding:16px 18px;font-size:15.5px}
  .faq-inner{padding:16px 18px}
}