/* roulang page: index */
:root{
  --bg:#060B18;
  --panel:#0C1424;
  --layer:#121C30;
  --accent:#13E3A4;
  --accent-soft:rgba(19,227,164,.12);
  --hot:#FF7A2B;
  --hot-soft:rgba(255,122,43,.12);
  --text:#E6EDF7;
  --muted:#9AA8BF;
  --dim:#6C7A92;
  --line:rgba(255,255,255,.08);
  --glass:rgba(14,22,38,.62);
  --r-lg:16px;
  --r-md:12px;
  --r-sm:10px;
  --shadow:0 18px 40px rgba(2,8,20,.55);
  --shadow-hover:0 24px 52px rgba(2,8,20,.65);
  --glow:0 0 0 1px rgba(19,227,164,.35),0 0 24px rgba(19,227,164,.25);
  --glow-soft:0 0 0 1px rgba(19,227,164,.18),0 0 16px rgba(19,227,164,.14);
  --max:1240px;
}
*,*::before,*::after{box-sizing:border-box}
html{scroll-behavior:smooth}
body{
  margin:0;
  padding:0;
  background-color:var(--bg);
  background-image:
    linear-gradient(rgba(255,255,255,.028) 1px,transparent 1px),
    linear-gradient(90deg,rgba(255,255,255,.028) 1px,transparent 1px);
  background-size:64px 64px,64px 64px;
  color:var(--text);
  font-family:"PingFang SC","HarmonyOS Sans SC","Microsoft YaHei",system-ui,-apple-system,"Segoe UI",sans-serif;
  font-size:16px;
  line-height:1.85;
  -webkit-font-smoothing:antialiased;
  overflow-x:hidden;
}
img{max-width:100%;display:block;border-radius:var(--r-md)}
a{color:var(--text);text-decoration:none;transition:color .18s ease,transform .18s ease}
a:hover{color:var(--accent)}
h1,h2,h3,h4{margin:0;font-weight:700;line-height:1.3;letter-spacing:.2px}
p{margin:0}
ul,ol{margin:0;padding:0;list-style:none}
button{font-family:inherit;cursor:pointer;border:none;background:none;color:inherit}
input,textarea{font-family:inherit}
::selection{background:rgba(19,227,164,.3);color:#fff}
:focus-visible{outline:2px solid var(--accent);outline-offset:2px;border-radius:6px}
.num,.stamp,.stat-num,.float-time{font-variant-numeric:tabular-nums}
.container{max-width:var(--max);padding-left:20px;padding-right:20px;margin:0 auto}
.skip-link{position:absolute;left:-9999px;top:0;background:var(--accent);color:#04121C;padding:10px 16px;z-index:2000;border-radius:0 0 10px 0}
.skip-link:focus{left:0}

/* ---------- 按钮 ---------- */
.btn-main,.btn-ghost-line,.btn-hot,.btn-soft{
  display:inline-flex;align-items:center;gap:8px;
  padding:12px 22px;border-radius:var(--r-sm);
  font-size:15px;font-weight:600;line-height:1;
  transition:transform .18s ease,box-shadow .18s ease,background .18s ease,border-color .18s ease,color .18s ease;
  white-space:nowrap;
}
.btn-main{background:var(--accent);color:#04121C;box-shadow:var(--glow)}
.btn-main:hover{background:#28f0b3;color:#04121C;transform:translateY(-1px);box-shadow:0 0 0 1px rgba(19,227,164,.5),0 0 32px rgba(19,227,164,.4)}
.btn-main:active{transform:translateY(0)}
.btn-ghost-line{background:transparent;color:var(--text);border:1px solid rgba(19,227,164,.55)}
.btn-ghost-line:hover{color:var(--accent);border-color:var(--accent);transform:translateY(-1px);box-shadow:var(--glow-soft)}
.btn-hot{background:transparent;color:var(--hot);border:1px solid rgba(255,122,43,.55)}
.btn-hot:hover{background:var(--hot-soft);color:var(--hot);transform:translateY(-1px);box-shadow:0 0 0 1px rgba(255,122,43,.35),0 0 20px rgba(255,122,43,.2)}
.btn-soft{background:rgba(255,255,255,.05);color:var(--muted);border:1px solid var(--line)}
.btn-soft:hover{color:var(--accent);border-color:rgba(19,227,164,.45)}

/* ---------- 徽章 / 标签 ---------- */
.badge-cat{display:inline-flex;align-items:center;padding:3px 11px;border-radius:999px;background:var(--accent-soft);color:var(--accent);font-size:12px;font-weight:600;line-height:1.7;white-space:nowrap}
.badge-hot{display:inline-flex;align-items:center;padding:3px 11px;border-radius:999px;background:var(--hot-soft);color:var(--hot);font-size:12px;font-weight:600;line-height:1.7;white-space:nowrap}
.stamp{font-size:13px;color:var(--dim);line-height:1.6}
.tag-pill{display:inline-flex;align-items:center;gap:6px;padding:6px 14px;border-radius:999px;border:1px solid var(--line);background:rgba(255,255,255,.03);color:var(--muted);font-size:13px;transition:all .18s ease}
.tag-pill:hover{color:var(--accent);border-color:rgba(19,227,164,.45);transform:translateY(-1px)}
.tag-pill.is-hot:hover{color:var(--hot);border-color:rgba(255,122,43,.5)}

/* ---------- 头部导航 ---------- */
.site-header{position:sticky;top:0;z-index:1030;transition:background .25s ease,box-shadow .25s ease}
.site-header::after{content:"";display:block;height:1px;background:transparent;transition:background .25s ease}
.site-header.is-stuck{background:rgba(8,13,26,.86);backdrop-filter:blur(14px) saturate(120%);-webkit-backdrop-filter:blur(14px) saturate(120%)}
.site-header.is-stuck::after{background:rgba(19,227,164,.28);box-shadow:0 0 18px rgba(19,227,164,.25)}
.topbar-inner{display:flex;align-items:center;justify-content:space-between;gap:20px;min-height:68px}
.brand{display:inline-flex;align-items:center;gap:10px;font-size:17px;font-weight:700;letter-spacing:.3px;color:var(--text)}
.brand:hover{color:var(--text)}
.brand-mark{width:34px;height:34px;flex:0 0 34px;display:grid;place-items:center;border-radius:10px;background:linear-gradient(140deg,rgba(19,227,164,.22),rgba(19,227,164,0));border:1px solid rgba(19,227,164,.45);box-shadow:var(--glow-soft)}
.brand-mark svg{width:19px;height:19px}
.topbar-right{display:flex;align-items:center;gap:14px}
.search-box{display:flex;align-items:center;gap:8px;padding:8px 14px;border-radius:999px;background:rgba(255,255,255,.05);border:1px solid var(--line);transition:border-color .18s ease,box-shadow .18s ease}
.search-box i{color:var(--dim);font-size:13px}
.search-box input{width:180px;background:transparent;border:none;outline:none;color:var(--text);font-size:14px}
.search-box input::placeholder{color:var(--dim)}
.search-box:focus-within{border-color:rgba(19,227,164,.6);box-shadow:var(--glow-soft)}
.trend-nav{display:flex;align-items:center;gap:8px;overflow-x:auto;scrollbar-width:none;max-width:330px}
.trend-nav::-webkit-scrollbar{display:none}
.trend-nav .tag-pill{flex:0 0 auto;font-size:12px;padding:5px 12px}
.channelbar{border-top:1px solid var(--line)}
.channel-inner{display:flex;align-items:center;justify-content:space-between;gap:16px}
.channel-list{display:flex;align-items:center;gap:26px}
.channel-list a{display:inline-flex;align-items:center;height:48px;font-size:15px;color:var(--muted);position:relative}
.channel-list a::after{content:"";position:absolute;left:0;right:0;bottom:8px;height:2px;background:var(--accent);border-radius:2px;transform:scaleX(0);transform-origin:left;transition:transform .2s ease;box-shadow:0 0 10px rgba(19,227,164,.7)}
.channel-list a:hover{color:var(--accent)}
.channel-list a:hover::after,.channel-list a.active::after{transform:scaleX(1)}
.channel-list a.active{color:var(--accent)}
.channel-more{font-size:13px;color:var(--dim)}
.channel-more:hover{color:var(--accent)}
.hamburger{display:none;width:42px;height:42px;border-radius:10px;border:1px solid var(--line);background:rgba(255,255,255,.04);color:var(--text);align-items:center;justify-content:center}

/* 抽屉 */
.drawer-mask{position:fixed;inset:0;background:rgba(3,7,16,.7);backdrop-filter:blur(2px);opacity:0;pointer-events:none;transition:opacity .22s ease;z-index:1040}
.drawer-mask.show{opacity:1;pointer-events:auto}
.drawer{position:fixed;top:0;right:0;bottom:0;width:min(86vw,340px);background:rgba(12,20,36,.94);backdrop-filter:blur(16px) saturate(120%);border-left:1px solid var(--line);padding:22px 20px;z-index:1050;transform:translateX(102%);transition:transform .26s ease;overflow-y:auto}
.drawer.show{transform:translateX(0)}
.drawer h2{font-size:15px;color:var(--muted);font-weight:600;margin-bottom:12px}
.drawer .search-box{width:100%;margin-bottom:20px}
.drawer .search-box input{width:100%}
.drawer-nav{display:flex;flex-direction:column;gap:2px;margin-bottom:22px}
.drawer-nav a{padding:12px 10px;border-radius:var(--r-sm);color:var(--muted);font-size:15px;border-bottom:1px solid rgba(255,255,255,.05)}
.drawer-nav a.active{color:var(--accent);background:rgba(19,227,164,.07)}
.drawer-tags{display:flex;flex-wrap:wrap;gap:8px;margin-bottom:24px}
.drawer-close{position:absolute;top:16px;right:16px;width:36px;height:36px;border-radius:10px;border:1px solid var(--line);color:var(--muted);display:grid;place-items:center}

/* ---------- Hero ---------- */
.hero{position:relative;overflow:hidden;padding:64px 0 72px;border-bottom:1px solid var(--line)}
.hero-bg{position:absolute;inset:0;background-size:cover;background-position:center;opacity:.55}
.hero::before{content:"";position:absolute;inset:0;background:linear-gradient(180deg,rgba(6,11,24,.94),rgba(6,11,24,.72) 45%,rgba(6,11,24,.96));z-index:1}
.hero-inner{position:relative;z-index:2}
.hero-badge{display:inline-flex;align-items:center;gap:8px;padding:6px 14px;border-radius:999px;background:rgba(19,227,164,.1);border:1px solid rgba(19,227,164,.35);color:var(--accent);font-size:13px;font-weight:600;margin-bottom:20px}
.hero-title{font-size:40px;line-height:1.2;font-weight:700;margin-bottom:16px;letter-spacing:.4px}
.hero-title span{color:var(--accent)}
.hero-sub{font-size:17px;color:var(--muted);max-width:520px;margin-bottom:26px}
.hero-actions{display:flex;flex-wrap:wrap;gap:14px;margin-bottom:34px}
.hero-stats{display:flex;flex-wrap:wrap;gap:38px;padding-top:24px;border-top:1px solid var(--line)}
.hero-stats li{display:flex;flex-direction:column}
.hero-stats strong{font-size:26px;font-weight:700;color:var(--accent);line-height:1.2;font-variant-numeric:tabular-nums}
.hero-stats span{font-size:13px;color:var(--dim)}
.hero-visual{position:relative;border-radius:var(--r-lg);overflow:hidden;border:1px solid var(--line);box-shadow:var(--shadow)}
.hero-visual img{width:100%;height:340px;object-fit:cover;border-radius:0}
.hero-visual::after{content:"";position:absolute;inset:0;background:linear-gradient(180deg,rgba(6,11,24,.15),rgba(6,11,24,.82))}
.float-card{position:absolute;left:18px;right:18px;bottom:18px;z-index:3;padding:16px 18px;border-radius:var(--r-md);background:var(--glass);backdrop-filter:blur(14px) saturate(120%);-webkit-backdrop-filter:blur(14px) saturate(120%);border:1px solid var(--line)}
.float-label{font-size:12px;color:var(--dim)}
.float-time{font-size:19px;font-weight:700;color:var(--accent);margin-bottom:4px}
.float-card p{font-size:13px;color:var(--muted);line-height:1.6}

/* ---------- 板块通用 ---------- */
main{display:block}
.section{padding:72px 0}
.section-alt{background:linear-gradient(180deg,rgba(12,20,36,.6),rgba(6,11,24,0))}
.section-head{display:flex;align-items:flex-end;justify-content:space-between;gap:20px;margin-bottom:32px}
.section-head h2{font-size:28px;font-weight:700}
.section-head .eyebrow{display:block;font-size:13px;color:var(--accent);letter-spacing:1.5px;margin-bottom:8px;font-weight:600}
.section-head p{font-size:14px;color:var(--dim);margin-top:8px;max-width:620px}
.link-more{font-size:14px;color:var(--muted);display:inline-flex;align-items:center;gap:6px;white-space:nowrap}
.link-more:hover{color:var(--accent);gap:10px}

/* ---------- 封面大卡 ---------- */
.cover-card{position:relative;display:block;border-radius:var(--r-lg);overflow:hidden;border:1px solid var(--line);background:var(--panel);box-shadow:var(--shadow);transition:transform .22s ease,box-shadow .22s ease,border-color .22s ease}
.cover-card img{width:100%;height:270px;object-fit:cover;border-radius:0;transition:transform .5s ease}
.cover-card:hover{transform:translateY(-4px);box-shadow:var(--shadow-hover);border-color:rgba(19,227,164,.35)}
.cover-card:hover img{transform:scale(1.03)}
.cover-card .cover-body{position:relative;padding:20px 22px 24px;background:linear-gradient(180deg,rgba(12,20,36,.4),rgba(12,20,36,.96))}
.cover-card .cover-body h3{font-size:20px;margin-bottom:10px}
.cover-card .cover-body p{font-size:14px;color:var(--muted);margin-bottom:14px}
.cover-meta{display:flex;align-items:center;gap:14px;font-size:13px;color:var(--dim)}
.cover-card.tall img{height:400px}

/* ---------- 合集目录 ---------- */
.directory{border:1px solid var(--line);border-radius:var(--r-lg);background:var(--panel);padding:20px 18px;position:sticky;top:130px}
.directory h3{font-size:16px;margin-bottom:14px;color:var(--text)}
.directory details{border-bottom:1px solid rgba(255,255,255,.06)}
.directory details:last-child{border-bottom:none}
.directory summary{padding:12px 2px;font-size:14px;color:var(--muted);cursor:pointer;list-style:none;display:flex;align-items:center;justify-content:space-between}
.directory summary::-webkit-details-marker{display:none}
.directory summary::after{content:"+";color:var(--accent);font-size:15px}
.directory details[open] summary{color:var(--accent)}
.directory details[open] summary::after{content:"−"}
.directory .dir-links{padding:0 2px 12px}
.directory .dir-links a{display:block;padding:8px 0;font-size:13px;color:var(--dim);border-left:2px solid transparent;padding-left:10px}
.directory .dir-links a:hover{color:var(--accent);border-left-color:var(--accent);transform:translateX(2px)}
.entry-list{display:grid;grid-template-columns:1fr 1fr;gap:20px}
.entry-card{display:flex;gap:14px;padding:18px;border-radius:var(--r-lg);border:1px solid var(--line);background:linear-gradient(150deg,rgba(18,28,48,.9),rgba(12,20,36,.85));transition:transform .22s ease,border-color .22s ease,box-shadow .22s ease}
.entry-card:hover{transform:translateY(-4px);border-color:rgba(19,227,164,.35);box-shadow:var(--shadow-hover)}
.entry-index{flex:0 0 34px;font-size:18px;font-weight:700;color:rgba(19,227,164,.55);font-variant-numeric:tabular-nums;line-height:1.4}
.entry-card h3{font-size:17px;margin-bottom:8px;display:-webkit-box;-webkit-line-clamp:2;-webkit-box-orient:vertical;overflow:hidden}
.entry-card h3 a:hover{color:var(--accent)}
.entry-card p{font-size:13.5px;color:var(--muted);margin-bottom:12px;display:-webkit-box;-webkit-line-clamp:2;-webkit-box-orient:vertical;overflow:hidden}
.entry-foot{display:flex;align-items:center;justify-content:space-between;gap:10px}
.icon-actions{display:flex;gap:6px}
.icon-btn{width:32px;height:32px;border-radius:9px;border:1px solid var(--line);color:var(--dim);display:grid;place-items:center;font-size:13px;transition:all .18s ease}
.icon-btn:hover{color:var(--accent);border-color:rgba(19,227,164,.45)}

/* ---------- 精选条目 ---------- */
.feature-grid{display:grid;grid-template-columns:1.5fr 1fr;gap:20px}
.feature-main{position:relative;border-radius:var(--r-lg);overflow:hidden;border:1px solid var(--line);box-shadow:var(--shadow)}
.feature-main img{width:100%;height:100%;min-height:340px;object-fit:cover;border-radius:0}
.feature-main .feature-body{position:absolute;inset:auto 0 0 0;padding:26px 24px;background:linear-gradient(180deg,rgba(6,11,24,0),rgba(6,11,24,.94))}
.feature-main h3{font-size:22px;margin:12px 0 10px}
.feature-main p{font-size:14px;color:var(--muted)}
.feature-side{display:flex;flex-direction:column;gap:20px}
.mini-card{display:flex;gap:16px;padding:16px;border-radius:var(--r-lg);border:1px solid var(--line);background:var(--panel);transition:transform .22s ease,border-color .22s ease}
.mini-card:hover{transform:translateY(-4px);border-color:rgba(19,227,164,.32)}
.mini-card img{width:110px;height:84px;object-fit:cover;border-radius:var(--r-sm);flex:0 0 110px}
.mini-card h4{font-size:16px;font-weight:600;margin-bottom:8px}
.mini-card h4 a:hover{color:var(--accent)}
.mini-card p{font-size:13px;color:var(--dim);display:-webkit-box;-webkit-line-clamp:2;-webkit-box-orient:vertical;overflow:hidden}

/* ---------- 最新动态（CMS 列表） ---------- */
.filter-tags{display:flex;flex-wrap:wrap;gap:10px;margin-bottom:26px}
.news-list{display:flex;flex-direction:column;gap:14px}
.news-row{display:flex;gap:18px;padding:18px;border-radius:var(--r-lg);border:1px solid var(--line);background:var(--panel);transition:transform .22s ease,border-color .22s ease,box-shadow .22s ease}
.news-row:hover{transform:translateY(-3px);border-color:rgba(19,227,164,.3);box-shadow:var(--shadow)}
.news-thumb{flex:0 0 148px}
.news-thumb img{width:148px;height:98px;object-fit:cover;border-radius:var(--r-sm)}
.news-body{flex:1;min-width:0}
.news-meta{display:flex;align-items:center;gap:12px;margin-bottom:8px}
.news-body h3{font-size:18px;margin-bottom:8px;line-height:1.45}
.news-body h3 a:hover{color:var(--accent)}
.news-body p{font-size:14px;color:var(--muted);display:-webkit-box;-webkit-line-clamp:2;-webkit-box-orient:vertical;overflow:hidden}
.news-empty{padding:40px 24px;text-align:center;border:1px dashed rgba(255,255,255,.14);border-radius:var(--r-lg);background:rgba(255,255,255,.02)}
.news-empty p{color:var(--muted);margin-bottom:16px}

/* ---------- 数据条 ---------- */
.metric-grid{display:grid;grid-template-columns:repeat(4,1fr);gap:20px}
.metric-card{padding:24px 20px;border-radius:var(--r-lg);background:var(--glass);backdrop-filter:blur(14px) saturate(120%);-webkit-backdrop-filter:blur(14px) saturate(120%);border:1px solid var(--line);transition:transform .22s ease,border-color .22s ease}
.metric-card:hover{transform:translateY(-4px);border-color:rgba(19,227,164,.3)}
.metric-card .stat-num{font-size:30px;font-weight:700;color:var(--accent);line-height:1.2}
.metric-card .stat-num small{font-size:14px;color:var(--muted);font-weight:500;margin-left:4px}
.metric-card h3{font-size:15px;margin:8px 0 6px;font-weight:600}
.metric-card p{font-size:13px;color:var(--dim);line-height:1.7}

/* ---------- 相关推荐 ---------- */
.recommend-grid{display:grid;grid-template-columns:1.15fr 1fr;gap:20px}
.rec-card{display:flex;gap:16px;padding:18px;border-radius:var(--r-lg);border:1px solid var(--line);background:var(--panel);transition:transform .22s ease,border-color .22s ease}
.rec-card:hover{transform:translateY(-4px);border-color:rgba(19,227,164,.3)}
.rec-card img{width:96px;height:66px;object-fit:cover;border-radius:var(--r-sm);flex:0 0 96px}
.rec-card h3{font-size:16px;margin-bottom:6px}
.rec-card p{font-size:13px;color:var(--dim);display:-webkit-box;-webkit-line-clamp:2;-webkit-box-orient:vertical;overflow:hidden}

/* ---------- FAQ ---------- */
.faq-wrap{max-width:880px}
.faq-list{display:flex;flex-direction:column;gap:12px}
.faq-item{border:1px solid var(--line);border-radius:var(--r-md);background:var(--panel);overflow:hidden;transition:background .2s ease,border-color .2s ease}
.faq-item[open]{background:rgba(18,28,48,.95);border-color:rgba(19,227,164,.28)}
.faq-item summary{position:relative;padding:18px 22px 18px 26px;font-size:16px;font-weight:600;color:var(--text);cursor:pointer;list-style:none;display:flex;align-items:center;justify-content:space-between;gap:16px}
.faq-item summary::-webkit-details-marker{display:none}
.faq-item summary::before{content:"";position:absolute;left:0;top:14px;bottom:14px;width:3px;border-radius:3px;background:transparent}
.faq-item[open] summary::before{background:var(--accent);box-shadow:0 0 12px rgba(19,227,164,.7)}
.faq-item summary::after{content:"\f067";font-family:"Font Awesome 6 Free";font-weight:900;font-size:12px;color:var(--accent);transition:transform .2s ease}
.faq-item[open] summary::after{content:"\f068";transform:rotate(180deg)}
.faq-item .faq-answer{padding:0 22px 20px 26px;font-size:14.5px;color:var(--muted);line-height:1.85}

/* ---------- CTA 横幅 ---------- */
.cta-band{margin:0 auto;padding:36px 32px;border-radius:var(--r-lg);background:var(--glass);backdrop-filter:blur(14px) saturate(120%);-webkit-backdrop-filter:blur(14px) saturate(120%);border:1px solid rgba(19,227,164,.28);box-shadow:var(--glow-soft)}
.cta-inner{display:flex;align-items:center;justify-content:space-between;gap:26px;flex-wrap:wrap}
.cta-inner h2{font-size:24px;margin-bottom:8px}
.cta-inner p{font-size:14px;color:var(--muted)}
.cta-actions{display:flex;align-items:center;gap:14px;flex-wrap:wrap}

/* ---------- 页脚 ---------- */
.site-footer{margin-top:72px;border-top:1px solid rgba(19,227,164,.22);background:linear-gradient(180deg,rgba(12,20,36,.7),rgba(4,8,18,.98))}
.footer-grid{display:grid;grid-template-columns:1.6fr 1fr 1fr 1.2fr;gap:32px;padding:56px 0 36px}
.footer-brand p{font-size:13.5px;color:var(--dim);margin-top:14px;max-width:320px;line-height:1.8}
.footer-col h3{font-size:14px;color:var(--text);margin-bottom:16px;font-weight:600}
.footer-col ul{display:flex;flex-direction:column;gap:10px}
.footer-col a{font-size:13.5px;color:var(--muted)}
.footer-col a:hover{color:var(--accent);transform:translateX(2px);display:inline-block}
.footer-bottom{border-top:1px solid var(--line);padding:20px 0 32px;display:flex;align-items:center;justify-content:space-between;gap:14px;flex-wrap:wrap}
.footer-bottom p{font-size:12.5px;color:var(--dim)}
.footer-bottom a{font-size:12.5px;color:var(--dim)}
.footer-bottom a:hover{color:var(--accent)}

/* ---------- 响应式 ---------- */
@media (max-width:1199.98px){
  .directory{position:static;margin-bottom:24px}
  .metric-grid{grid-template-columns:repeat(2,1fr)}
}
@media (max-width:991.98px){
  .search-box,.trend-nav,.login-btn{display:none}
  .hamburger{display:inline-flex}
  .channel-list{gap:18px;overflow-x:auto;scrollbar-width:none}
  .channel-list::-webkit-scrollbar{display:none}
  .channel-more{display:none}
  .hero{padding:48px 0 56px}
  .hero-title{font-size:32px}
  .hero-visual img{height:280px}
  .feature-grid{grid-template-columns:1fr}
  .recommend-grid{grid-template-columns:1fr}
  .entry-list{grid-template-columns:1fr}
  .footer-grid{grid-template-columns:1fr 1fr;gap:28px}
}
@media (max-width:767.98px){
  body{font-size:15px;line-height:1.8}
  .section{padding:48px 0}
  .hero-title{font-size:28px}
  .hero-sub{font-size:15px}
  .section-head{flex-direction:column;align-items:flex-start;gap:12px}
  .section-head h2{font-size:22px}
  .hero-stats{gap:24px}
  .hero-stats strong{font-size:22px}
  .news-row{flex-direction:column;gap:14px;padding:16px}
  .news-thumb{flex:none}
  .news-thumb img{width:100%;height:170px}
  .news-body h3{font-size:17px}
  .metric-grid{grid-template-columns:1fr}
  .cta-band{padding:26px 20px}
  .cta-inner h2{font-size:20px}
  .footer-grid{grid-template-columns:1fr;padding:40px 0 28px}
  .mini-card,.rec-card{flex-direction:column}
  .mini-card img,.rec-card img{width:100%;height:160px;flex:none}
  .feature-main img{min-height:220px}
  .cover-card img{height:200px}
  .cover-card.tall img{height:240px}
}
@media (max-width:519.98px){
  .container{padding-left:16px;padding-right:16px}
  .brand-text{font-size:15px}
  .hero-title{font-size:24px}
  .hero-actions{flex-direction:column;align-items:stretch}
  .hero-actions .btn-main,.hero-actions .btn-ghost-line{justify-content:center}
  .cta-actions{width:100%}
  .cta-actions .btn-main,.cta-actions .btn-hot,.cta-actions .btn-ghost-line{flex:1;justify-content:center}
}

/* roulang page: category1 */
:root{
  --bg:#060B18;
  --panel:#0C1424;
  --panel-2:#121C30;
  --glass:rgba(14,22,38,.62);
  --glass-2:rgba(14,22,38,.48);
  --line:rgba(255,255,255,.08);
  --line-strong:rgba(255,255,255,.14);
  --accent:#13E3A4;
  --accent-text:#04121C;
  --accent-soft:rgba(19,227,164,.12);
  --accent-glow:0 0 0 1px rgba(19,227,164,.35),0 0 24px rgba(19,227,164,.25);
  --orange:#FF7A2B;
  --orange-soft:rgba(255,122,43,.12);
  --text:#E6EDF7;
  --text-2:#9AA8BF;
  --text-3:#6C7A92;
  --warn:#FF5B5B;
  --radius-xl:20px;
  --radius-l:16px;
  --radius-m:12px;
  --radius-s:10px;
  --shadow:0 18px 40px rgba(2,8,20,.55);
  --shadow-hover:0 24px 52px rgba(2,8,20,.65);
  --container:1240px;
}
*,*::before,*::after{box-sizing:border-box}
html{-webkit-text-size-adjust:100%;scroll-behavior:smooth}
body{
  margin:0;background:var(--bg);color:var(--text);
  font-family:"PingFang SC","HarmonyOS Sans SC","Microsoft YaHei",system-ui,-apple-system,"Segoe UI",sans-serif;
  font-size:16px;line-height:1.85;letter-spacing:.2px;
  overflow-x:hidden;
}
body::before{
  content:"";position:fixed;inset:0;z-index:0;pointer-events:none;
  background-image:linear-gradient(rgba(255,255,255,.03) 1px,transparent 1px),linear-gradient(90deg,rgba(255,255,255,.03) 1px,transparent 1px);
  background-size:72px 72px;opacity:.5;
}
img{max-width:100%;display:block;border-radius:var(--radius-m)}
a{color:var(--text);text-decoration:none;transition:color .18s ease,transform .18s ease}
a:hover{color:var(--accent)}
button,input{font:inherit;color:inherit}
ul,ol{margin:0;padding:0;list-style:none}
h1,h2,h3,h4{margin:0;font-weight:700;line-height:1.3;letter-spacing:.3px}
p{margin:0}
:focus-visible{outline:2px solid var(--accent);outline-offset:3px;border-radius:6px}
.container{width:100%;max-width:var(--container);margin:0 auto;padding:0 20px;position:relative;z-index:1}
.num,.ts,.stat-value,.dir-idx,.dir-count,.dir-list .num,.dir-list .meta{font-variant-numeric:tabular-nums}

/* ============ HEADER ============ */
.site-header{
  position:sticky;top:0;z-index:1030;
  border-bottom:1px solid transparent;
  background:rgba(6,11,24,.55);
  backdrop-filter:blur(10px);
  transition:background .25s ease,box-shadow .25s ease,border-color .25s ease;
}
.site-header.is-stuck{
  background:rgba(8,13,26,.88);
  backdrop-filter:blur(14px) saturate(120%);
  border-bottom-color:rgba(19,227,164,.28);
  box-shadow:0 14px 34px rgba(2,8,20,.6),0 0 22px rgba(19,227,164,.08);
}
.topbar{display:flex;align-items:center;gap:18px;padding:12px 0}
.brand{display:inline-flex;align-items:center;gap:10px;flex:0 0 auto}
.brand-mark{
  width:36px;height:36px;display:grid;place-items:center;border-radius:11px;
  background:linear-gradient(160deg,rgba(19,227,164,.2),rgba(19,227,164,.03));
  border:1px solid rgba(19,227,164,.4);
  box-shadow:0 0 18px rgba(19,227,164,.22);
}
.brand-mark svg{width:22px;height:22px}
.brand-text{font-size:19px;font-weight:700;letter-spacing:.6px;white-space:nowrap}
.search-box{
  position:relative;flex:1 1 auto;max-width:380px;
  display:flex;align-items:center;gap:8px;
  background:var(--glass);border:1px solid var(--line);
  border-radius:999px;padding:7px 14px;
  backdrop-filter:blur(14px) saturate(120%);
  transition:border-color .2s ease,box-shadow .2s ease;
}
.search-box:focus-within{border-color:rgba(19,227,164,.55);box-shadow:0 0 0 1px rgba(19,227,164,.3),0 0 20px rgba(19,227,164,.2)}
.search-box svg{width:17px;height:17px;flex:0 0 auto;stroke:var(--text-3)}
.search-box input{
  flex:1 1 auto;background:transparent;border:0;outline:none;
  font-size:14px;color:var(--text);padding:2px 0;
}
.search-box input::placeholder{color:var(--text-3)}
.topbar-actions{display:flex;align-items:center;gap:10px;margin-left:auto;flex:0 0 auto}
.btn{
  display:inline-flex;align-items:center;justify-content:center;gap:8px;
  border-radius:var(--radius-s);border:1px solid transparent;
  padding:10px 18px;font-size:14px;font-weight:600;cursor:pointer;
  transition:all .18s ease;white-space:nowrap;
}
.btn-primary-glow{
  background:var(--accent);color:var(--accent-text);
  box-shadow:0 0 0 1px rgba(19,227,164,.35),0 0 22px rgba(19,227,164,.3);
}
.btn-primary-glow:hover{color:var(--accent-text);filter:brightness(1.08);box-shadow:0 0 0 1px rgba(19,227,164,.5),0 0 30px rgba(19,227,164,.45);transform:translateY(-1px)}
.btn-primary-glow:active{transform:translateY(0)}
.btn-outline-glow{background:transparent;color:var(--text);border-color:rgba(19,227,164,.45)}
.btn-outline-glow:hover{color:var(--accent);border-color:var(--accent);box-shadow:0 0 0 1px rgba(19,227,164,.25),0 0 20px rgba(19,227,164,.22);transform:translateY(-1px)}
.btn-outline-orange{background:transparent;color:var(--orange);border-color:rgba(255,122,43,.55)}
.btn-outline-orange:hover{background:var(--orange-soft);color:var(--orange);border-color:var(--orange);transform:translateY(-1px)}
.btn-ghost-trend{background:transparent;color:var(--text-2);border-color:var(--line)}
.btn-ghost-trend:hover{color:var(--text);border-color:var(--line-strong)}
.nav-toggle{
  display:none;width:42px;height:42px;border-radius:var(--radius-s);
  background:var(--glass);border:1px solid var(--line);cursor:pointer;
  place-items:center;
}
.nav-toggle span{display:block;width:18px;height:2px;background:var(--text);border-radius:2px;position:relative}
.nav-toggle span::before,.nav-toggle span::after{content:"";position:absolute;left:0;width:18px;height:2px;background:var(--text);border-radius:2px}
.nav-toggle span::before{top:-6px}
.nav-toggle span::after{top:6px}

.channelbar{
  display:flex;align-items:center;gap:24px;
  border-top:1px solid var(--line);
}
.nav-channels{display:flex;align-items:center;gap:4px;flex:0 0 auto}
.nav-channels a{
  position:relative;display:inline-flex;align-items:center;height:48px;padding:0 14px;
  font-size:15px;color:var(--text-2);
}
.nav-channels a::after{
  content:"";position:absolute;left:14px;right:14px;bottom:7px;height:2px;border-radius:2px;
  background:var(--accent);box-shadow:0 0 12px rgba(19,227,164,.7);
  transform:scaleX(0);transform-origin:left;transition:transform .22s ease;
}
.nav-channels a:hover{color:var(--text)}
.nav-channels a:hover::after{transform:scaleX(1)}
.nav-channels a.is-active{color:var(--accent)}
.nav-channels a.is-active::after{transform:scaleX(1)}
.trend-nav{
  display:flex;align-items:center;gap:8px;overflow-x:auto;margin-left:auto;
  padding:9px 0;scrollbar-width:none;
}
.trend-nav::-webkit-scrollbar{display:none}
.tag-pill{
  display:inline-flex;align-items:center;white-space:nowrap;
  padding:5px 13px;border-radius:999px;font-size:13px;
  color:var(--text-2);border:1px solid var(--line);background:rgba(255,255,255,.02);
  transition:all .18s ease;
}
.tag-pill:hover{color:var(--orange);border-color:rgba(255,122,43,.55);background:var(--orange-soft)}
.tag-pill.is-hot{color:var(--orange);background:var(--orange-soft);border-color:rgba(255,122,43,.45)}

/* ============ DRAWER ============ */
.drawer{
  position:fixed;top:0;right:0;height:100%;width:min(340px,86vw);z-index:1100;
  background:rgba(10,16,30,.92);backdrop-filter:blur(18px) saturate(120%);
  border-left:1px solid rgba(19,227,164,.22);
  transform:translateX(100%);transition:transform .28s ease;
  padding:22px 20px;overflow-y:auto;
}
.drawer.is-open{transform:translateX(0)}
.drawer-head{display:flex;align-items:center;justify-content:space-between;margin-bottom:18px}
.drawer-close{width:36px;height:36px;border-radius:10px;background:transparent;border:1px solid var(--line);color:var(--text-2);cursor:pointer}
.drawer-search{width:100%;max-width:none;margin-bottom:20px}
.drawer h4{font-size:13px;color:var(--text-3);font-weight:600;letter-spacing:1px;margin:18px 0 10px}
.drawer-links a{display:flex;align-items:center;min-height:46px;font-size:15px;color:var(--text-2);border-bottom:1px solid rgba(255,255,255,.06)}
.drawer-links a:hover,.drawer-links a.is-active{color:var(--accent);padding-left:4px}
.drawer-tags{display:flex;flex-wrap:wrap;gap:8px;margin-top:12px}
.drawer-mask{
  position:fixed;inset:0;background:rgba(3,7,16,.6);z-index:1050;
  opacity:0;visibility:hidden;transition:opacity .25s ease,visibility .25s ease;
}
.drawer-mask.is-open{opacity:1;visibility:visible}

/* ============ HERO ============ */
.page-hero{
  position:relative;overflow:hidden;
  padding:52px 0 46px;
  background-image:url('/assets/images/backpic/back-1.png');
  background-size:cover;background-position:center;
  border-bottom:1px solid var(--line);
}
.page-hero::before{
  content:"";position:absolute;inset:0;
  background:linear-gradient(180deg,rgba(6,11,24,.94),rgba(6,11,24,.6));
}
.crumb{display:flex;align-items:center;gap:8px;font-size:13px;color:var(--text-3);margin-bottom:18px;flex-wrap:wrap}
.crumb a{color:var(--text-2)}
.crumb a:hover{color:var(--accent)}
.crumb .sep{color:var(--text-3)}
.crumb .current{color:var(--text);font-weight:600}
.page-hero h1{font-size:40px;line-height:1.22;max-width:820px}
.page-hero h1 em{font-style:normal;color:var(--accent)}
.hero-lead{margin-top:16px;max-width:660px;font-size:16px;color:var(--text-2)}
.hero-actions{display:flex;flex-wrap:wrap;gap:12px;margin-top:26px}
.stat-strip{
  display:grid;grid-template-columns:repeat(4,minmax(0,1fr));gap:16px;margin-top:34px;
}
.stat-card{
  background:var(--glass);border:1px solid var(--line);border-radius:var(--radius-l);
  padding:16px 18px;backdrop-filter:blur(14px) saturate(120%);
  box-shadow:var(--shadow);
}
.stat-card .stat-label{font-size:12px;color:var(--text-3);letter-spacing:.6px}
.stat-card .stat-value{font-size:26px;font-weight:700;color:var(--accent);line-height:1.3;margin-top:4px}
.stat-card .stat-value small{font-size:12px;color:var(--text-2);font-weight:500;margin-left:4px}

/* ============ SECTION ============ */
.section{padding:64px 0 0}
.section:last-of-type{padding-bottom:8px}
.section-head{display:flex;align-items:flex-end;justify-content:space-between;gap:16px;margin-bottom:26px;flex-wrap:wrap}
.section-head h2{font-size:28px;line-height:1.3}
.section-head .sub{font-size:14px;color:var(--text-2);margin-top:8px;max-width:640px}
.section-head .more{font-size:14px;color:var(--text-2);border-bottom:1px solid rgba(19,227,164,.4);padding-bottom:2px}
.section-head .more:hover{color:var(--accent)}

/* ============ 目录索引 ============ */
.dir-layout{display:grid;grid-template-columns:minmax(0,8fr) minmax(0,4fr);gap:26px;align-items:start}
.dir-group{
  background:var(--glass);border:1px solid var(--line);border-radius:var(--radius-l);
  margin-bottom:16px;overflow:hidden;backdrop-filter:blur(14px) saturate(120%);
  box-shadow:var(--shadow);transition:border-color .2s ease,box-shadow .2s ease;
}
.dir-group:hover{border-color:rgba(19,227,164,.3)}
.dir-group summary{
  list-style:none;cursor:pointer;display:flex;align-items:center;gap:14px;
  padding:18px 20px;transition:background .2s ease;
}
.dir-group summary::-webkit-details-marker{display:none}
.dir-group summary:hover{background:rgba(255,255,255,.035)}
.dir-idx{font-size:14px;font-weight:700;color:var(--accent);letter-spacing:1px}
.dir-title{font-size:17px;font-weight:600}
.dir-count{margin-left:auto;font-size:12px;color:var(--text-3)}
.dir-chevron{
  width:18px;height:18px;flex:0 0 auto;transition:transform .22s ease;
  stroke:var(--text-3);
}
details[open] > summary .dir-chevron{transform:rotate(180deg);stroke:var(--accent)}
.dir-list{padding:2px 12px 12px}
.dir-list a{
  display:flex;align-items:center;gap:12px;min-height:44px;padding:6px 12px;
  font-size:15px;color:var(--text-2);border-radius:var(--radius-m);
  border-bottom:1px solid rgba(255,255,255,.06);
  transition:all .18s ease;
}
.dir-list li:last-child a{border-bottom-color:transparent}
.dir-list a:hover{color:var(--accent);background:rgba(19,227,164,.06);transform:translateX(2px);border-bottom-color:transparent}
.dir-list .num{font-size:12px;color:var(--text-3);min-width:24px}
.dir-list .meta{margin-left:auto;font-size:12px;color:var(--text-3)}
.side-sticky{position:sticky;top:96px;display:grid;gap:16px}
.side-card{
  background:var(--glass);border:1px solid var(--line);border-radius:var(--radius-l);
  padding:20px;backdrop-filter:blur(14px) saturate(120%);box-shadow:var(--shadow);
}
.side-card h3{font-size:15px;letter-spacing:.6px;color:var(--text);margin-bottom:12px}
.side-card .toc a{
  display:flex;align-items:center;gap:10px;min-height:40px;font-size:14px;color:var(--text-2);
  border-bottom:1px solid rgba(255,255,255,.06);
}
.side-card .toc li:last-child a{border-bottom-color:transparent}
.side-card .toc a:hover{color:var(--accent);padding-left:3px}
.side-card .toc .dot{width:6px;height:6px;border-radius:50%;background:var(--accent);box-shadow:0 0 10px rgba(19,227,164,.7);flex:0 0 auto}
.side-cta p{font-size:14px;color:var(--text-2);margin-bottom:14px}
.side-cta .btn{width:100%;margin-bottom:10px}

/* ============ 流程 ============ */
.flow{display:grid;grid-template-columns:repeat(3,minmax(0,1fr));gap:20px}
.flow-card{
  position:relative;background:var(--panel);border:1px solid var(--line);
  border-radius:var(--radius-l);padding:26px 22px;overflow:hidden;
  box-shadow:var(--shadow);transition:transform .2s ease,box-shadow .2s ease,border-color .2s ease;
}
.flow-card:hover{transform:translateY(-4px);box-shadow:var(--shadow-hover);border-color:rgba(19,227,164,.32)}
.flow-card .step{
  display:inline-flex;align-items:center;justify-content:center;
  width:34px;height:34px;border-radius:10px;font-size:14px;font-weight:700;
  color:var(--accent);background:var(--accent-soft);border:1px solid rgba(19,227,164,.35);
  font-variant-numeric:tabular-nums;
}
.flow-card h3{font-size:19px;margin:16px 0 10px}
.flow-card p{font-size:15px;color:var(--text-2)}
.flow-card::after{
  content:"";position:absolute;right:-40px;top:-40px;width:120px;height:120px;border-radius:50%;
  border:1px solid rgba(19,227,164,.14);
}

/* ============ 场景卡 ============ */
.scene-grid{display:grid;grid-template-columns:minmax(0,7fr) minmax(0,5fr);gap:20px}
.scene-main,.scene-small{
  background:var(--glass);border:1px solid var(--line);border-radius:var(--radius-l);
  overflow:hidden;backdrop-filter:blur(14px) saturate(120%);box-shadow:var(--shadow);
  transition:transform .2s ease,box-shadow .2s ease,border-color .2s ease;
}
.scene-main:hover,.scene-small:hover{transform:translateY(-4px);box-shadow:var(--shadow-hover);border-color:rgba(19,227,164,.32)}
.scene-main img{width:100%;aspect-ratio:16/9;object-fit:cover;border-radius:0;transition:transform .3s ease}
.scene-main:hover img{transform:scale(1.03)}
.scene-body{padding:20px}
.scene-body h3{font-size:20px;margin-bottom:10px}
.scene-body p{font-size:15px;color:var(--text-2)}
.scene-side{display:grid;gap:20px}
.scene-small{display:grid;grid-template-columns:100px minmax(0,1fr);align-items:center}
.scene-small img{height:100%;min-height:104px;object-fit:cover;border-radius:0}
.scene-small .scene-body{padding:16px 18px}
.scene-small h3{font-size:16px;margin-bottom:6px}
.scene-small p{font-size:13px;color:var(--text-3)}
.badges{display:flex;flex-wrap:wrap;gap:8px;margin-top:14px}
.badge-cat{
  display:inline-flex;align-items:center;padding:3px 10px;border-radius:999px;
  font-size:12px;color:var(--accent);background:var(--accent-soft);border:1px solid rgba(19,227,164,.28);
}
.badge-hot{
  display:inline-flex;align-items:center;padding:3px 10px;border-radius:999px;
  font-size:12px;color:var(--orange);background:var(--orange-soft);border:1px solid rgba(255,122,43,.3);
}

/* ============ FAQ ============ */
.faq-wrap{max-width:900px}
.faq-item{
  background:var(--glass-2);border:1px solid var(--line);border-radius:var(--radius-m);
  margin-bottom:12px;overflow:hidden;transition:background .2s ease,border-color .2s ease;
}
.faq-item summary{
  list-style:none;cursor:pointer;padding:17px 20px;font-size:16px;font-weight:600;
  display:flex;align-items:center;gap:12px;transition:color .18s ease;
}
.faq-item summary::-webkit-details-marker{display:none}
.faq-item summary::before{
  content:"";width:6px;height:6px;border-radius:50%;background:var(--text-3);flex:0 0 auto;
  transition:background .2s ease,box-shadow .2s ease;
}
.faq-item summary:hover{color:var(--accent)}
.faq-item[open]{background:rgba(18,28,48,.7);border-left:3px solid var(--accent);box-shadow:0 0 26px rgba(19,227,164,.12)}
.faq-item[open] summary::before{background:var(--accent);box-shadow:0 0 10px rgba(19,227,164,.8)}
.faq-item p{padding:0 22px 18px 40px;font-size:15px;color:var(--text-2)}

/* ============ CTA ============ */
.cta-band{
  margin-top:64px;
  background:var(--glass);border:1px solid rgba(19,227,164,.25);border-radius:var(--radius-xl);
  padding:34px 32px;backdrop-filter:blur(16px) saturate(120%);
  box-shadow:var(--shadow),0 0 30px rgba(19,227,164,.08);
  display:flex;align-items:center;justify-content:space-between;gap:24px;flex-wrap:wrap;
}
.cta-band h2{font-size:24px;margin-bottom:8px}
.cta-band p{font-size:15px;color:var(--text-2);max-width:620px}
.cta-actions{display:flex;gap:12px;flex-wrap:wrap}
.share-row{display:flex;align-items:center;gap:10px;margin-top:14px}
.icon-btn{
  width:38px;height:38px;display:grid;place-items:center;border-radius:10px;
  background:rgba(255,255,255,.03);border:1px solid var(--line);color:var(--text-2);cursor:pointer;
  transition:all .18s ease;
}
.icon-btn:hover{color:var(--accent);border-color:rgba(19,227,164,.5);box-shadow:0 0 18px rgba(19,227,164,.2);transform:translateY(-1px)}
.icon-btn svg{width:18px;height:18px}

/* ============ FOOTER ============ */
.site-footer{
  margin-top:72px;padding:56px 0 26px;
  border-top:1px solid rgba(19,227,164,.25);
  background:rgba(8,13,26,.7);
}
.footer-grid{display:grid;grid-template-columns:1.7fr 1fr 1fr 1fr;gap:30px}
.footer-brand p{font-size:14px;color:var(--text-2);margin-top:14px;max-width:340px}
.footer-col h3{font-size:15px;color:var(--text);margin-bottom:14px;letter-spacing:.5px}
.footer-col li{margin-bottom:6px}
.footer-col a{display:inline-block;font-size:14px;color:var(--text-2);padding:4px 0}
.footer-col a:hover{color:var(--accent);transform:translateX(2px)}
.footer-bottom{
  display:flex;align-items:center;justify-content:space-between;gap:14px;flex-wrap:wrap;
  margin-top:34px;padding-top:18px;border-top:1px solid var(--line);
  font-size:13px;color:var(--text-3);
}
.footer-bottom a{color:var(--text-3)}
.footer-bottom a:hover{color:var(--accent)}

/* ============ RESPONSIVE ============ */
@media (max-width:1199px){
  .dir-layout{grid-template-columns:minmax(0,1fr)}
  .side-sticky{position:static;grid-template-columns:repeat(2,minmax(0,1fr))}
  .search-box{max-width:280px}
}
@media (max-width:991px){
  .topbar{padding:10px 0}
  .search-box{display:none}
  .btn-ghost-trend{display:none}
  .nav-toggle{display:grid}
  .channelbar{border-top:1px solid var(--line)}
  .nav-channels{display:none}
  .trend-nav{margin-left:0;width:100%;padding:10px 0}
  .page-hero{padding:42px 0 38px}
  .page-hero h1{font-size:30px}
  .stat-strip{grid-template-columns:repeat(2,minmax(0,1fr))}
  .flow{grid-template-columns:repeat(2,minmax(0,1fr))}
  .scene-grid{grid-template-columns:minmax(0,1fr)}
  .footer-grid{grid-template-columns:1fr 1fr;gap:26px}
}
@media (max-width:767px){
  .section{padding:48px 0 0}
  .page-hero h1{font-size:26px}
  .section-head h2{font-size:22px}
  .flow{grid-template-columns:minmax(0,1fr)}
  .side-sticky{grid-template-columns:minmax(0,1fr)}
  .cta-band{padding:24px 20px}
  .cta-band h2{font-size:20px}
  .scene-small{grid-template-columns:88px minmax(0,1fr)}
  .scene-small img{min-height:96px}
  .dir-group summary{padding:16px;gap:10px}
  .dir-title{font-size:16px}
  .footer-grid{grid-template-columns:minmax(0,1fr)}
  .footer-bottom{justify-content:flex-start}
}
@media (max-width:519px){
  .container{padding:0 16px}
  .brand-text{font-size:16px}
  .stat-strip{grid-template-columns:minmax(0,1fr)}
  .page-hero{padding:34px 0 32px}
  .page-hero h1{font-size:23px}
  .hero-actions .btn,.cta-actions .btn{width:100%}
  .dir-list a{flex-wrap:wrap;row-gap:2px}
  .dir-list .meta{margin-left:36px}
}

/* roulang page: article */
/* ===================== 设计变量 ===================== */
:root{
  --bg:#060B18;
  --panel:#0C1424;
  --panel-2:#121C30;
  --accent:#13E3A4;
  --accent-ink:#04121C;
  --orange:#FF7A2B;
  --text:#E6EDF7;
  --text-2:#9AA8BF;
  --text-3:#6C7A92;
  --line:rgba(255,255,255,.08);
  --line-soft:rgba(255,255,255,.06);
  --glass:rgba(14,22,38,.62);
  --r-lg:16px;
  --r-md:12px;
  --r-btn:10px;
  --sh-card:0 18px 40px rgba(2,8,20,.55);
  --sh-hover:0 24px 52px rgba(2,8,20,.65);
  --glow:0 0 0 1px rgba(19,227,164,.35),0 0 24px rgba(19,227,164,.25);
  --glow-strong:0 0 0 1px rgba(19,227,164,.55),0 0 34px rgba(19,227,164,.40);
  --ease:.18s ease;
  --maxw:1240px;
}

/* ===================== 基础 reset ===================== */
*,*::before,*::after{box-sizing:border-box;}
html{-webkit-text-size-adjust:100%;scroll-behavior:smooth;}
body{
  margin:0;
  background:var(--bg);
  color:var(--text);
  font-family:"PingFang SC","HarmonyOS Sans SC","Microsoft YaHei",system-ui,-apple-system,"Segoe UI",Roboto,sans-serif;
  font-size:16px;
  line-height:1.85;
  -webkit-font-smoothing:antialiased;
  overflow-x:hidden;
}
body::before{
  content:"";
  position:fixed;
  inset:0;
  background-image:
    linear-gradient(rgba(255,255,255,.035) 1px,transparent 1px),
    linear-gradient(90deg,rgba(255,255,255,.035) 1px,transparent 1px);
  background-size:64px 64px;
  opacity:.55;
  pointer-events:none;
  z-index:0;
}
img{max-width:100%;height:auto;display:block;border-radius:var(--r-md);}
a{color:inherit;text-decoration:none;transition:color var(--ease),background-color var(--ease),border-color var(--ease),transform var(--ease);}
a:hover{color:var(--accent);}
button,input{font:inherit;color:inherit;}
ul,ol{margin:0;padding:0;list-style:none;}
h1,h2,h3,h4{margin:0;font-weight:700;color:var(--text);}
p{margin:0;}
:focus-visible{outline:2px solid var(--accent);outline-offset:2px;}
.container{width:100%;max-width:var(--maxw);margin:0 auto;padding:0 20px;position:relative;z-index:1;}
.tnum{font-variant-numeric:tabular-nums;}

/* ===================== 通用按钮 ===================== */
.btn-main,.btn-ghost,.btn-orange{
  display:inline-flex;align-items:center;justify-content:center;gap:8px;
  padding:12px 22px;border-radius:var(--r-btn);font-size:15px;font-weight:600;
  border:1px solid transparent;cursor:pointer;white-space:nowrap;
  transition:transform var(--ease),box-shadow var(--ease),background-color var(--ease),color var(--ease),border-color var(--ease);
}
.btn-main{background:var(--accent);color:var(--accent-ink);box-shadow:var(--glow);}
.btn-main:hover{background:#2DF0B4;color:var(--accent-ink);box-shadow:var(--glow-strong);transform:translateY(-1px);}
.btn-main:active{transform:translateY(1px);}
.btn-ghost{background:transparent;color:var(--text);border-color:rgba(19,227,164,.45);}
.btn-ghost:hover{color:var(--accent);border-color:var(--accent);box-shadow:var(--glow);transform:translateY(-1px);}
.btn-orange{background:transparent;color:var(--orange);border-color:rgba(255,122,43,.55);}
.btn-orange:hover{background:rgba(255,122,43,.12);color:#FFA268;border-color:var(--orange);transform:translateY(-1px);}

/* ===================== 徽章 / 标签 ===================== */
.badge-cat{
  display:inline-flex;align-items:center;height:26px;padding:0 12px;border-radius:999px;
  background:rgba(19,227,164,.12);color:var(--accent);
  font-size:13px;font-weight:600;letter-spacing:.4px;
}
.tag-pill{
  display:inline-flex;align-items:center;height:32px;padding:0 15px;border-radius:999px;
  background:rgba(255,255,255,.04);border:1px solid var(--line);
  color:var(--text-2);font-size:13px;white-space:nowrap;
}
.tag-pill:hover{color:var(--orange);border-color:rgba(255,122,43,.55);background:rgba(255,122,43,.08);}
.tag-pill.is-hot{color:var(--orange);border-color:rgba(255,122,43,.5);background:rgba(255,122,43,.12);}
.tag-pill.is-hot:hover{background:rgba(255,122,43,.2);}

/* ===================== 导航 ===================== */
.site-header{
  position:sticky;top:0;z-index:1030;
  background:transparent;
  transition:background-color .25s ease,box-shadow .25s ease,border-color .25s ease;
  border-bottom:1px solid transparent;
}
.site-header.is-stuck{
  background:rgba(8,13,26,.86);
  -webkit-backdrop-filter:blur(14px) saturate(120%);
  backdrop-filter:blur(14px) saturate(120%);
  border-bottom:1px solid rgba(19,227,164,.22);
  box-shadow:0 12px 32px rgba(2,8,20,.55);
}
.nav-top-inner{display:flex;align-items:center;justify-content:space-between;gap:20px;height:68px;}
.brand{display:inline-flex;align-items:center;gap:10px;font-weight:700;font-size:18px;letter-spacing:.4px;color:var(--text);}
.brand:hover{color:var(--text);}
.brand-mark{
  width:34px;height:34px;display:inline-flex;align-items:center;justify-content:center;
  border-radius:10px;background:rgba(19,227,164,.12);border:1px solid rgba(19,227,164,.35);
  box-shadow:0 0 18px rgba(19,227,164,.22);
}
.brand-mark svg{width:20px;height:20px;}
.brand-text{white-space:nowrap;}
.nav-tools{display:flex;align-items:center;gap:14px;}
.nav-search{
  display:flex;align-items:center;gap:8px;
  width:250px;height:40px;padding:0 14px;border-radius:999px;
  background:rgba(14,22,38,.62);
  border:1px solid var(--line);
  -webkit-backdrop-filter:blur(14px);backdrop-filter:blur(14px);
  transition:border-color var(--ease),box-shadow var(--ease);
}
.nav-search:focus-within{border-color:var(--accent);box-shadow:var(--glow);}
.nav-search svg{width:16px;height:16px;flex:none;stroke:var(--text-3);}
.nav-search input{
  flex:1;min-width:0;background:transparent;border:0;outline:none;
  font-size:14px;color:var(--text);
}
.nav-search input::placeholder{color:var(--text-3);}
.nav-entry{
  display:inline-flex;align-items:center;height:40px;padding:0 18px;border-radius:var(--r-btn);
  background:var(--accent);color:var(--accent-ink);font-size:14px;font-weight:600;box-shadow:var(--glow);
}
.nav-entry:hover{color:var(--accent-ink);background:#2DF0B4;box-shadow:var(--glow-strong);transform:translateY(-1px);}
.nav-burger{
  display:none;width:42px;height:42px;border-radius:var(--r-btn);
  background:rgba(255,255,255,.04);border:1px solid var(--line);cursor:pointer;
  align-items:center;justify-content:center;
}
.nav-burger:hover{border-color:var(--accent);}
.nav-burger span{display:block;width:18px;height:2px;background:var(--text);position:relative;}
.nav-burger span::before,.nav-burger span::after{content:"";position:absolute;left:0;width:18px;height:2px;background:var(--text);}
.nav-burger span::before{top:-6px;}
.nav-burger span::after{top:6px;}

.nav-bottom-inner{display:flex;align-items:center;justify-content:space-between;gap:24px;height:52px;border-top:1px solid var(--line);}
.channel-nav{display:flex;align-items:center;gap:6px;}
.channel-nav a{
  position:relative;display:inline-flex;align-items:center;height:44px;padding:0 14px;
  color:var(--text-2);font-size:15px;font-weight:500;
}
.channel-nav a::after{
  content:"";position:absolute;left:14px;right:14px;bottom:4px;height:2px;border-radius:2px;
  background:var(--accent);opacity:0;box-shadow:0 0 12px rgba(19,227,164,.75);transition:opacity var(--ease);
}
.channel-nav a:hover{color:var(--accent);}
.channel-nav a:hover::after,.channel-nav a.is-active::after{opacity:1;}
.channel-nav a.is-active{color:var(--accent);font-weight:600;}
.trend-nav{display:flex;align-items:center;gap:8px;overflow-x:auto;scrollbar-width:none;-ms-overflow-style:none;}
.trend-nav::-webkit-scrollbar{display:none;}

/* 抽屉 */
.drawer-mask{
  position:fixed;inset:0;background:rgba(4,8,18,.6);z-index:1050;
  opacity:0;visibility:hidden;transition:opacity .22s ease,visibility .22s ease;
}
.drawer-mask.is-open{opacity:1;visibility:visible;}
.nav-drawer{
  position:fixed;top:0;right:0;bottom:0;width:min(86vw,340px);z-index:1060;
  background:rgba(12,20,36,.94);
  -webkit-backdrop-filter:blur(16px) saturate(120%);backdrop-filter:blur(16px) saturate(120%);
  border-left:1px solid var(--line);
  padding:20px;overflow-y:auto;
  transform:translateX(100%);transition:transform .26s ease;
}
.nav-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(--text-2);letter-spacing:1px;}
.drawer-close{
  width:34px;height:34px;border-radius:10px;background:rgba(255,255,255,.05);
  border:1px solid var(--line);cursor:pointer;font-size:18px;line-height:1;color:var(--text-2);
}
.drawer-close:hover{color:var(--accent);border-color:var(--accent);}
.drawer-search{display:flex;gap:8px;margin-bottom:18px;}
.drawer-search input{
  flex:1;min-width:0;height:42px;padding:0 14px;border-radius:var(--r-btn);
  background:rgba(255,255,255,.04);border:1px solid var(--line);outline:none;font-size:14px;
}
.drawer-search input:focus{border-color:var(--accent);box-shadow:var(--glow);}
.drawer-search button{
  height:42px;padding:0 16px;border-radius:var(--r-btn);border:1px solid transparent;
  background:var(--accent);color:var(--accent-ink);font-size:14px;font-weight:600;cursor:pointer;
}
.drawer-links{display:flex;flex-direction:column;margin-bottom:18px;border-top:1px solid var(--line-soft);}
.drawer-links a{
  padding:13px 4px;border-bottom:1px solid var(--line-soft);
  font-size:15px;color:var(--text-2);
}
.drawer-links a:hover{color:var(--accent);padding-left:8px;}
.drawer-tags{display:flex;flex-wrap:wrap;gap:8px;margin-bottom:20px;}
.drawer-cta{width:100%;}

/* ===================== 文章头部 ===================== */
.page-top{
  position:relative;
  padding:34px 0 40px;
  background-image:linear-gradient(180deg,rgba(6,11,24,.95),rgba(6,11,24,.70)),url('/assets/images/backpic/back-1.png');
  background-size:cover;background-position:center;
  border-bottom:1px solid var(--line);
}
.breadcrumb{display:flex;flex-wrap:wrap;align-items:center;gap:8px;font-size:13px;color:var(--text-3);margin-bottom:22px;}
.breadcrumb a{color:var(--text-2);}
.breadcrumb a:hover{color:var(--accent);}
.breadcrumb .sep{color:var(--text-3);}
.breadcrumb .current{color:var(--text);font-weight:600;}
.article-head{max-width:900px;}
.article-head h1{
  font-size:40px;line-height:1.2;font-weight:700;letter-spacing:.2px;
  margin:16px 0 18px;
}
.meta-row{display:flex;align-items:center;flex-wrap:wrap;gap:14px;font-size:13px;color:var(--text-2);}
.meta-row .dot{width:4px;height:4px;border-radius:50%;background:var(--text-3);}
.meta-row time{font-variant-numeric:tabular-nums;color:var(--text);}
.meta-actions{display:flex;align-items:center;gap:10px;margin-left:auto;}
.icon-btn{
  display:inline-flex;align-items:center;gap:7px;height:36px;padding:0 14px;
  border-radius:999px;background:rgba(14,22,38,.62);border:1px solid var(--line);
  color:var(--text-2);font-size:13px;cursor:pointer;
  -webkit-backdrop-filter:blur(14px);backdrop-filter:blur(14px);
}
.icon-btn:hover{color:var(--accent);border-color:rgba(19,227,164,.5);box-shadow:var(--glow);}
.icon-btn svg{width:16px;height:16px;stroke:currentColor;fill:none;stroke-width:1.6;}

/* ===================== 正文布局 ===================== */
.article-section{padding:56px 0 8px;position:relative;z-index:1;}
.article-layout{
  display:grid;grid-template-columns:minmax(0,1fr) 280px;gap:56px;align-items:start;
}
.article-body{
  max-width:760px;margin:0 auto;font-size:16px;line-height:1.85;color:var(--text);
}
.article-body p{margin:0 0 1.2em;}
.article-body h2{
  position:relative;font-size:24px;line-height:1.35;font-weight:700;
  margin:2.2em 0 .9em;padding-left:16px;
}
.article-body h2::before{
  content:"";position:absolute;left:0;top:.16em;bottom:.16em;width:3px;border-radius:2px;
  background:var(--accent);box-shadow:0 0 14px rgba(19,227,164,.7);
}
.article-body h3{font-size:19px;line-height:1.5;font-weight:600;margin:1.8em 0 .7em;}
.article-body h4{font-size:17px;line-height:1.5;font-weight:600;margin:1.4em 0 .6em;color:var(--text);}
.article-body a{color:var(--accent);text-decoration:underline;text-underline-offset:3px;}
.article-body a:hover{color:#56F2C4;}
.article-body ul,.article-body ol{padding-left:1.35em;margin:0 0 1.2em;}
.article-body ul li{list-style:disc;}
.article-body ol li{list-style:decimal;}
.article-body li{margin:.5em 0;line-height:1.9;}
.article-body blockquote{
  margin:1.5em 0;padding:16px 20px;border-left:3px solid var(--accent);
  border-radius:0 var(--r-md) var(--r-md) 0;
  background:rgba(19,227,164,.06);color:var(--text-2);
}
.article-body blockquote p:last-child{margin-bottom:0;}
.article-body img{border-radius:var(--r-md);margin:1.4em 0;}
.article-body figure{margin:1.4em 0;}
.article-body figcaption{font-size:13px;color:var(--text-3);margin-top:8px;text-align:center;}
.article-body table{width:100%;border-collapse:collapse;margin:1.5em 0;font-size:15px;line-height:1.6;}
.article-body th,.article-body td{border:1px solid var(--line);padding:10px 14px;text-align:left;}
.article-body th{background:rgba(255,255,255,.06);font-weight:600;}
.article-body tbody tr:nth-child(even) td{background:rgba(255,255,255,.03);}
.article-body pre{
  background:#08101F;border:1px solid var(--line);border-radius:var(--r-md);
  padding:16px 18px;overflow-x:auto;font-size:14px;line-height:1.7;margin:1.5em 0;
}
.article-body code{
  font-family:ui-monospace,SFMono-Regular,Menlo,Consolas,monospace;
  font-size:.92em;color:var(--accent);
}
.article-body pre code{color:var(--text-2);}
.article-body hr{border:0;border-top:1px solid var(--line);margin:2em 0;}
.article-body iframe{max-width:100%;border-radius:var(--r-md);border:0;}

.empty-state{
  padding:48px 28px;text-align:center;border-radius:var(--r-lg);
  background:var(--panel);border:1px solid var(--line);box-shadow:var(--sh-card);
}
.empty-state h2{font-size:22px;margin-bottom:12px;padding:0;}
.empty-state h2::before{display:none;}
.empty-state p{color:var(--text-2);margin-bottom:22px;}

/* 侧栏 */
.article-aside{position:sticky;top:140px;}
.aside-card{
  border-radius:var(--r-lg);padding:20px;
  background:var(--glass);border:1px solid var(--line);
  -webkit-backdrop-filter:blur(14px) saturate(120%);backdrop-filter:blur(14px) saturate(120%);
  box-shadow:var(--sh-card);margin-bottom:20px;
}
.aside-card h2{font-size:14px;letter-spacing:1.2px;color:var(--text-2);font-weight:600;margin-bottom:14px;}
.toc-list{display:flex;flex-direction:column;gap:2px;}
.toc-list a{
  display:block;padding:8px 10px;border-left:2px solid transparent;border-radius:0 8px 8px 0;
  font-size:14px;color:var(--text-2);line-height:1.6;
}
.toc-list a:hover{color:var(--accent);background:rgba(19,227,164,.06);}
.toc-list a.is-current{color:var(--accent);border-left-color:var(--accent);background:rgba(19,227,164,.08);}
.aside-card .btn-ghost{width:100%;}

/* ===================== 文末区块 ===================== */
.tail-section{padding:56px 0 0;position:relative;z-index:1;}
.tail-wrap{max-width:760px;margin:0 auto;}
.tail-block{margin-bottom:44px;}
.tail-block h2{font-size:20px;font-weight:700;margin-bottom:18px;}
.tag-row{display:flex;flex-wrap:wrap;gap:10px;}
.post-nav{display:grid;grid-template-columns:1fr 1fr;gap:20px;}
.post-nav-card{
  display:block;padding:20px;border-radius:var(--r-lg);
  background:var(--panel);border:1px solid var(--line);box-shadow:var(--sh-card);
  transition:transform var(--ease),box-shadow var(--ease),border-color var(--ease);
}
.post-nav-card:hover{transform:translateY(-4px);box-shadow:var(--sh-hover);border-color:rgba(19,227,164,.35);color:var(--text);}
.post-nav-card .pn-label{display:block;font-size:12px;letter-spacing:1.2px;color:var(--text-3);margin-bottom:8px;}
.post-nav-card strong{font-size:16px;font-weight:600;line-height:1.6;display:block;}
.post-nav-card.next{text-align:right;}

.rec-list{display:flex;flex-direction:column;gap:14px;}
.rec-item{
  display:grid;grid-template-columns:132px minmax(0,1fr);gap:18px;align-items:center;
  padding:14px;border-radius:var(--r-md);
  background:var(--panel);border:1px solid var(--line);
  transition:transform var(--ease),border-color var(--ease),box-shadow var(--ease);
}
.rec-item:hover{transform:translateY(-3px);border-color:rgba(19,227,164,.35);box-shadow:var(--sh-card);color:var(--text);}
.rec-thumb{aspect-ratio:16/9;overflow:hidden;border-radius:10px;background:linear-gradient(135deg,rgba(19,227,164,.12),rgba(255,122,43,.08));}
.rec-thumb img{width:100%;height:100%;object-fit:cover;border-radius:0;transition:transform .3s ease;}
.rec-item:hover .rec-thumb img{transform:scale(1.04);}
.rec-info h3{font-size:16px;font-weight:600;line-height:1.55;margin-bottom:6px;overflow:hidden;display:-webkit-box;-webkit-line-clamp:2;-webkit-box-orient:vertical;}
.rec-info p{font-size:13px;color:var(--text-2);line-height:1.7;overflow:hidden;display:-webkit-box;-webkit-line-clamp:1;-webkit-box-orient:vertical;}
.rec-meta{display:flex;align-items:center;gap:12px;margin-top:8px;font-size:12px;color:var(--text-3);font-variant-numeric:tabular-nums;}

/* CTA 横幅 */
.cta-band{
  display:flex;align-items:center;justify-content:space-between;gap:26px;flex-wrap:wrap;
  padding:28px 30px;border-radius:var(--r-lg);
  background:var(--glass);border:1px solid rgba(19,227,164,.3);
  -webkit-backdrop-filter:blur(14px) saturate(120%);backdrop-filter:blur(14px) saturate(120%);
  box-shadow:var(--glow);
}
.cta-band h2{font-size:20px;font-weight:700;margin-bottom:6px;}
.cta-band p{font-size:14px;color:var(--text-2);}
.cta-actions{display:flex;align-items:center;gap:12px;flex-wrap:wrap;}
.cta-icons{display:flex;align-items:center;gap:10px;margin-left:6px;}

/* ===================== 页脚 ===================== */
.site-footer{
  margin-top:72px;background:#080E1B;
  border-top:1px solid rgba(19,227,164,.22);
  position:relative;z-index:1;
}
.footer-grid{
  display:grid;grid-template-columns:1.6fr 1fr 1fr 1fr;gap:34px;
  padding:56px 0 36px;
}
.footer-brand .brand{margin-bottom:16px;}
.footer-brand p{font-size:14px;color:var(--text-2);line-height:1.8;max-width:340px;}
.footer-col h3{font-size:14px;font-weight:600;letter-spacing:1px;color:var(--text-2);margin-bottom:16px;}
.footer-col ul{display:flex;flex-direction:column;gap:10px;}
.footer-col a{font-size:14px;color:var(--text-3);display:inline-block;}
.footer-col a:hover{color:var(--accent);transform:translateX(2px);}
.footer-bottom{
  border-top:1px solid var(--line-soft);padding:20px 0 30px;
  display:flex;align-items:center;justify-content:space-between;gap:16px;flex-wrap:wrap;
  font-size:13px;color:var(--text-3);
}
.footer-bottom a{color:var(--text-3);}
.footer-bottom a:hover{color:var(--accent);}

/* 提示 */
.site-toast{
  position:fixed;left:50%;bottom:36px;transform:translate(-50%,16px);
  padding:11px 22px;border-radius:999px;font-size:14px;
  background:rgba(14,22,38,.92);border:1px solid rgba(19,227,164,.4);
  color:var(--text);opacity:0;pointer-events:none;z-index:1200;
  transition:opacity .22s ease,transform .22s ease;
  -webkit-backdrop-filter:blur(14px);backdrop-filter:blur(14px);
}
.site-toast.is-show{opacity:1;transform:translate(-50%,0);}

/* ===================== 响应式 ===================== */
@media (max-width:1199px){
  .article-layout{grid-template-columns:minmax(0,1fr);gap:0;}
  .article-aside{display:none;}
}
@media (max-width:991px){
  .nav-bottom-inner{display:none;}
  .nav-search{width:190px;}
  .nav-entry{display:none;}
  .nav-burger{display:inline-flex;}
  .article-head h1{font-size:32px;}
  .footer-grid{grid-template-columns:1fr 1fr;}
  .site-header{background:rgba(8,13,26,.86);-webkit-backdrop-filter:blur(14px);backdrop-filter:blur(14px);border-bottom:1px solid var(--line);}
}
@media (max-width:767px){
  .page-top{padding:24px 0 32px;}
  .article-head h1{font-size:28px;line-height:1.3;}
  .nav-search{display:none;}
  .article-section{padding:40px 0 8px;}
  .article-body{font-size:15px;line-height:1.8;}
  .article-body h2{font-size:21px;margin:1.8em 0 .8em;}
  .article-body h3{font-size:18px;}
  .tail-section{padding:40px 0 0;}
  .post-nav{grid-template-columns:1fr;}
  .post-nav-card.next{text-align:left;}
  .rec-item{grid-template-columns:104px minmax(0,1fr);gap:14px;}
  .cta-band{padding:24px 20px;flex-direction:column;align-items:flex-start;}
  .meta-actions{margin-left:0;width:100%;}
  .footer-grid{grid-template-columns:1fr;gap:28px;padding:44px 0 28px;}
  .footer-bottom{justify-content:center;text-align:center;}
}
@media (max-width:519px){
  .container{padding:0 16px;}
  .brand{font-size:16px;}
  .article-head h1{font-size:24px;}
  .rec-item{grid-template-columns:1fr;}
  .rec-thumb{aspect-ratio:16/9;}
  .btn-main,.btn-ghost,.btn-orange{width:100%;}
  .cta-actions{width:100%;}
  .cta-icons{width:100%;}
}

/* roulang page: category2 */
:root{
  --bg:#060B18;
  --panel:#0C1424;
  --panel-2:#121C30;
  --accent:#13E3A4;
  --accent-ink:#04121C;
  --hot:#FF7A2B;
  --text:#E6EDF7;
  --text-2:#9AA8BF;
  --text-3:#6C7A92;
  --line:rgba(255,255,255,.08);
  --line-strong:rgba(255,255,255,.16);
  --glass:rgba(14,22,38,.62);
  --r-lg:16px;
  --r-md:12px;
  --r-btn:10px;
  --sh:0 18px 40px rgba(2,8,20,.55);
  --sh-h:0 24px 52px rgba(2,8,20,.65);
  --glow:0 0 0 1px rgba(19,227,164,.35),0 0 24px rgba(19,227,164,.22);
  --glow-h:0 0 0 1px rgba(19,227,164,.55),0 0 32px rgba(19,227,164,.36);
  --mono:"SFMono-Regular",Consolas,"Liberation Mono",Menlo,monospace;
}

*,*::before,*::after{box-sizing:border-box}
html{scroll-behavior:smooth}
body{
  margin:0;
  background:var(--bg);
  color:var(--text);
  font-family:"PingFang SC","HarmonyOS Sans SC","Microsoft YaHei",system-ui,-apple-system,"Segoe UI",sans-serif;
  font-size:16px;
  line-height:1.85;
  -webkit-font-smoothing:antialiased;
  overflow-x:hidden;
}
body::before{
  content:"";
  position:fixed;
  inset:0;
  z-index:0;
  pointer-events:none;
  background-image:
    linear-gradient(rgba(255,255,255,.028) 1px,transparent 1px),
    linear-gradient(90deg,rgba(255,255,255,.028) 1px,transparent 1px);
  background-size:64px 64px;
}
img{max-width:100%;display:block}
a{color:var(--accent);text-decoration:none;transition:color .18s ease,transform .18s ease}
a:hover{color:#5BF2C4}
p{margin:0 0 1em}
h1,h2,h3,h4{margin:0 0 .5em;font-weight:700;line-height:1.3;color:var(--text)}
ul,ol{margin:0;padding:0;list-style:none}
button{font-family:inherit}
:focus-visible{outline:2px solid var(--accent);outline-offset:3px;border-radius:6px}

.container{width:100%;max-width:1240px;margin:0 auto;padding:0 20px;position:relative;z-index:1}

/* ============ 顶部吸顶导航 ============ */
.site-header{
  position:sticky;
  top:0;
  z-index:1030;
  background:rgba(6,11,24,.55);
  backdrop-filter:blur(14px) saturate(120%);
  -webkit-backdrop-filter:blur(14px) saturate(120%);
  border-bottom:1px solid transparent;
  transition:background .25s ease,border-color .25s ease,box-shadow .25s ease;
}
.site-header.is-stuck{
  background:rgba(8,13,26,.88);
  border-bottom-color:rgba(19,227,164,.28);
  box-shadow:0 10px 30px rgba(2,8,20,.5);
}
.topbar-inner{
  display:flex;
  align-items:center;
  gap:18px;
  min-height:64px;
}
.brand{
  display:inline-flex;
  align-items:center;
  gap:10px;
  flex:0 0 auto;
  color:var(--text);
}
.brand:hover{color:var(--text)}
.brand-mark{
  width:34px;height:34px;
  display:inline-flex;align-items:center;justify-content:center;
  border-radius:10px;
  background:rgba(19,227,164,.1);
  border:1px solid rgba(19,227,164,.35);
  box-shadow:0 0 18px rgba(19,227,164,.18);
  color:var(--accent);
}
.brand-mark svg{width:20px;height:20px}
.brand-text{
  font-size:18px;
  font-weight:700;
  letter-spacing:.5px;
  white-space:nowrap;
}
.search-box{
  flex:1 1 auto;
  max-width:420px;
  display:flex;
  align-items:center;
  gap:10px;
  height:40px;
  padding:0 14px;
  border-radius:var(--r-btn);
  background:rgba(16,24,42,.7);
  border:1px solid var(--line);
  transition:border-color .2s ease,box-shadow .2s ease;
}
.search-box:focus-within{
  border-color:var(--accent);
  box-shadow:var(--glow);
}
.search-box svg{width:18px;height:18px;flex:0 0 auto;color:var(--text-3)}
.search-box input{
  flex:1 1 auto;
  background:transparent;
  border:0;
  outline:none;
  color:var(--text);
  font-size:14px;
  min-width:0;
}
.search-box input::placeholder{color:var(--text-3)}
.topbar-actions{
  display:flex;
  align-items:center;
  gap:10px;
  margin-left:auto;
}
.menu-toggle{
  display:none;
  width:42px;height:42px;
  align-items:center;
  justify-content:center;
  background:rgba(16,24,42,.7);
  border:1px solid var(--line);
  border-radius:var(--r-btn);
  color:var(--text-2);
  cursor:pointer;
}
.menu-toggle:hover{color:var(--accent);border-color:rgba(19,227,164,.4)}

.channelbar{
  border-top:1px solid var(--line);
}
.channelbar-inner{
  display:flex;
  align-items:center;
  gap:12px;
  min-height:52px;
}
.trend-nav{
  display:flex;
  align-items:center;
  gap:8px;
  overflow-x:auto;
  scrollbar-width:none;
  padding:6px 0;
}
.trend-nav::-webkit-scrollbar{display:none}
.tag-pill{
  flex:0 0 auto;
  display:inline-flex;
  align-items:center;
  height:36px;
  padding:0 16px;
  border-radius:999px;
  font-size:14px;
  color:var(--text-2);
  background:rgba(255,255,255,.03);
  border:1px solid var(--line);
  white-space:nowrap;
  transition:color .18s ease,border-color .18s ease,background .18s ease,box-shadow .18s ease;
}
.tag-pill:hover{
  color:var(--text);
  border-color:rgba(19,227,164,.45);
  background:rgba(19,227,164,.08);
}
.tag-pill.is-hot{color:#FFC79A;border-color:rgba(255,122,43,.35)}
.tag-pill.is-hot:hover{color:var(--hot);border-color:rgba(255,122,43,.7);background:rgba(255,122,43,.08)}
.tag-pill[aria-current="page"]{
  color:var(--accent);
  background:rgba(19,227,164,.12);
  border-color:rgba(19,227,164,.5);
  box-shadow:0 0 0 1px rgba(19,227,164,.2),0 0 18px rgba(19,227,164,.2);
}

/* ============ 按钮 ============ */
.btn-acc,.btn-line,.btn-hot{
  display:inline-flex;
  align-items:center;
  justify-content:center;
  gap:8px;
  height:44px;
  padding:0 22px;
  border-radius:var(--r-btn);
  font-size:15px;
  font-weight:600;
  cursor:pointer;
  border:1px solid transparent;
  transition:all .18s ease;
  white-space:nowrap;
}
.btn-acc{
  background:var(--accent);
  color:var(--accent-ink);
  box-shadow:var(--glow);
}
.btn-acc:hover{
  color:var(--accent-ink);
  filter:brightness(1.08);
  box-shadow:var(--glow-h);
  transform:translateY(-1px);
}
.btn-acc:active{transform:translateY(0)}
.btn-line{
  background:transparent;
  color:var(--accent);
  border-color:rgba(19,227,164,.55);
}
.btn-line:hover{
  color:var(--accent);
  background:rgba(19,227,164,.1);
  box-shadow:var(--glow);
  transform:translateY(-1px);
}
.btn-hot{
  background:transparent;
  color:var(--hot);
  border-color:rgba(255,122,43,.6);
}
.btn-hot:hover{
  color:#FFD2AE;
  background:rgba(255,122,43,.12);
  border-color:var(--hot);
  transform:translateY(-1px);
}
.btn-sm{height:38px;padding:0 16px;font-size:14px}
.btn-block{width:100%}

/* ============ 内页页头 ============ */
.page-hero{
  position:relative;
  border-bottom:1px solid var(--line);
  overflow:hidden;
}
.page-hero::before{
  content:"";
  position:absolute;inset:0;
  background-image:linear-gradient(180deg,rgba(6,11,24,.92),rgba(6,11,24,.55)),url("/assets/images/backpic/back-2.png");
  background-size:cover;
  background-position:center;
  z-index:0;
}
.page-hero::after{
  content:"";
  position:absolute;
  right:-140px;top:-160px;
  width:520px;height:520px;
  border-radius:50%;
  border:1px solid rgba(19,227,164,.1);
  box-shadow:0 0 0 80px rgba(19,227,164,.03),0 0 0 160px rgba(19,227,164,.02);
  pointer-events:none;
}
.page-hero .container{position:relative;z-index:2;padding-top:34px;padding-bottom:44px}
.crumb{
  display:flex;
  flex-wrap:wrap;
  align-items:center;
  gap:8px;
  font-size:13px;
  color:var(--text-3);
  margin-bottom:20px;
}
.crumb a{color:var(--text-3)}
.crumb a:hover{color:var(--accent)}
.crumb .sep{color:rgba(255,255,255,.22)}
.crumb .current{color:var(--text-2);font-weight:600}
.badge-cat{
  display:inline-flex;
  align-items:center;
  gap:6px;
  height:28px;
  padding:0 12px;
  border-radius:999px;
  font-size:12px;
  font-weight:600;
  letter-spacing:.6px;
  color:var(--accent);
  background:rgba(19,227,164,.12);
  border:1px solid rgba(19,227,164,.28);
  margin-bottom:16px;
}
.page-hero h1{
  font-size:40px;
  line-height:1.2;
  margin:0 0 14px;
  max-width:820px;
}
.page-hero .lead{
  max-width:700px;
  color:var(--text-2);
  font-size:17px;
  line-height:1.8;
  margin:0;
}
.stat-strip{
  display:flex;
  flex-wrap:wrap;
  gap:12px;
  margin-top:30px;
}
.stat-strip li{
  flex:1 1 180px;
  min-width:150px;
  padding:14px 16px;
  border-radius:var(--r-md);
  background:var(--glass);
  backdrop-filter:blur(14px) saturate(120%);
  -webkit-backdrop-filter:blur(14px) saturate(120%);
  border:1px solid var(--line);
}
.stat-strip .num{
  font-family:var(--mono);
  font-variant-numeric:tabular-nums;
  font-size:26px;
  font-weight:700;
  color:var(--accent);
  line-height:1.2;
}
.stat-strip .unit{
  font-size:13px;
  color:var(--text-3);
  margin-left:4px;
}
.stat-strip .label{
  display:block;
  font-size:13px;
  color:var(--text-2);
  margin-top:2px;
}

/* ============ 主布局 ============ */
.page-main{padding:60px 0 20px}
.page-layout{
  display:grid;
  grid-template-columns:minmax(0,1fr) 248px;
  gap:32px;
  align-items:start;
}
.section{margin-bottom:64px}
.section:last-child{margin-bottom:0}
.section-head{
  display:flex;
  align-items:flex-end;
  justify-content:space-between;
  gap:16px;
  margin-bottom:24px;
  padding-bottom:14px;
  border-bottom:1px solid var(--line);
}
.section-head h2{
  font-size:28px;
  margin:0;
  position:relative;
  padding-left:14px;
}
.section-head h2::before{
  content:"";
  position:absolute;
  left:0;top:6px;bottom:6px;
  width:3px;
  border-radius:2px;
  background:var(--accent);
  box-shadow:0 0 14px rgba(19,227,164,.6);
}
.section-more{
  font-size:14px;
  color:var(--text-2);
  display:inline-flex;
  align-items:center;
  gap:6px;
  flex:0 0 auto;
}
.section-more:hover{color:var(--accent);transform:translateX(2px)}
.section-sub{
  color:var(--text-2);
  font-size:15px;
  margin:-10px 0 24px;
  max-width:760px;
}

/* ============ 卡片通用 ============ */
.card{
  position:relative;
  border-radius:var(--r-lg);
  background:var(--glass);
  backdrop-filter:blur(14px) saturate(120%);
  -webkit-backdrop-filter:blur(14px) saturate(120%);
  border:1px solid var(--line);
  box-shadow:var(--sh);
  overflow:hidden;
  transition:transform .22s ease,box-shadow .22s ease,border-color .22s ease;
}
.card:hover{
  transform:translateY(-4px);
  box-shadow:var(--sh-h);
  border-color:rgba(19,227,164,.35);
}
.card:hover .card-media img{transform:scale(1.03)}
.card-media{
  position:relative;
  overflow:hidden;
  background:rgba(255,255,255,.03);
}
.card-media img{
  width:100%;
  height:100%;
  object-fit:cover;
  transition:transform .4s ease;
}
.card-body{padding:20px}
.card-title{
  font-size:20px;
  font-weight:600;
  margin:0 0 8px;
  display:-webkit-box;
  -webkit-line-clamp:2;
  -webkit-box-orient:vertical;
  overflow:hidden;
}
.card-text{
  color:var(--text-2);
  font-size:14.5px;
  line-height:1.8;
  margin:0 0 14px;
  display:-webkit-box;
  -webkit-line-clamp:3;
  -webkit-box-orient:vertical;
  overflow:hidden;
}
.card-foot{
  display:flex;
  align-items:center;
  justify-content:space-between;
  gap:12px;
  flex-wrap:wrap;
}
.meta{
  font-size:13px;
  color:var(--text-3);
  font-family:var(--mono);
  font-variant-numeric:tabular-nums;
}
.tag-row{display:flex;flex-wrap:wrap;gap:8px}
.tag{
  display:inline-flex;
  align-items:center;
  height:26px;
  padding:0 11px;
  border-radius:999px;
  font-size:12.5px;
  color:var(--accent);
  background:rgba(19,227,164,.12);
  border:1px solid rgba(19,227,164,.22);
}
.tag-hot{
  color:var(--hot);
  background:rgba(255,122,43,.12);
  border-color:rgba(255,122,43,.24);
}
.link-more{
  font-size:14px;
  font-weight:600;
  color:var(--accent);
  display:inline-flex;
  align-items:center;
  gap:6px;
  flex:0 0 auto;
}
.link-more:hover{transform:translateX(2px)}

/* 大图卡 */
.feature{
  display:grid;
  grid-template-columns:1.15fr 1fr;
  gap:0;
  margin-bottom:20px;
}
.feature .card-media{aspect-ratio:16/9;min-height:100%}
.feature .card-body{padding:28px;display:flex;flex-direction:column;justify-content:center}
.feature .card-title{font-size:24px}
.feature .card-text{
  -webkit-line-clamp:3;
  font-size:15px;
}
.feature-points{
  display:grid;
  gap:8px;
  margin:0 0 20px;
  padding:0;
}
.feature-points li{
  font-size:14px;
  color:var(--text-2);
  padding-left:18px;
  position:relative;
}
.feature-points li::before{
  content:"";
  position:absolute;
  left:0;top:11px;
  width:6px;height:6px;
  border-radius:50%;
  background:var(--accent);
  box-shadow:0 0 10px rgba(19,227,164,.8);
}

/* 四宫格小卡 */
.card-grid{
  display:grid;
  grid-template-columns:repeat(2,minmax(0,1fr));
  gap:20px;
}
.card-grid .card-media{aspect-ratio:16/9}

/* ============ 图文分栏 ============ */
.split{
  display:grid;
  grid-template-columns:1.1fr .9fr;
  gap:28px;
  align-items:center;
}
.split .card-media,
.split .split-media{
  border-radius:var(--r-lg);
  overflow:hidden;
  border:1px solid var(--line);
  box-shadow:var(--sh);
  aspect-ratio:3/2;
}
.split-media img{width:100%;height:100%;object-fit:cover}
.dim-list{display:grid;gap:14px;margin-top:22px}
.dim-list li{
  padding:16px 18px;
  border-radius:var(--r-md);
  background:var(--panel);
  border:1px solid var(--line);
  transition:border-color .2s ease,transform .2s ease;
}
.dim-list li:hover{border-color:rgba(19,227,164,.35);transform:translateX(3px)}
.dim-list strong{
  display:block;
  font-size:16px;
  color:var(--text);
  margin-bottom:4px;
}
.dim-list span{font-size:14px;color:var(--text-2);line-height:1.75}

/* ============ 流程步骤 ============ */
.flow{
  display:grid;
  grid-template-columns:repeat(4,minmax(0,1fr));
  gap:18px;
  counter-reset:step;
}
.flow-item{
  position:relative;
  padding:22px 18px 20px;
  border-radius:var(--r-lg);
  background:var(--panel);
  border:1px solid var(--line);
  transition:border-color .2s ease,transform .2s ease,box-shadow .2s ease;
}
.flow-item:hover{
  border-color:rgba(19,227,164,.4);
  transform:translateY(-4px);
  box-shadow:var(--sh);
}
.flow-item::before{
  counter-increment:step;
  content:"0" counter(step);
  font-family:var(--mono);
  font-variant-numeric:tabular-nums;
  font-size:22px;
  font-weight:700;
  color:var(--accent);
  display:block;
  margin-bottom:10px;
  text-shadow:0 0 18px rgba(19,227,164,.5);
}
.flow-item h3{font-size:17px;margin:0 0 6px}
.flow-item p{font-size:14px;color:var(--text-2);margin:0;line-height:1.75}

/* ============ 场景卡（不等宽） ============ */
.scene-grid{
  display:grid;
  grid-template-columns:1.3fr 1fr;
  gap:20px;
}
.scene-card{
  padding:26px;
  border-radius:var(--r-lg);
  background:var(--panel-2);
  border:1px solid var(--line);
  transition:border-color .2s ease,transform .2s ease;
}
.scene-card:hover{border-color:rgba(19,227,164,.35);transform:translateY(-4px)}
.scene-card h3{font-size:19px;margin:0 0 10px}
.scene-card p{font-size:14.5px;color:var(--text-2);margin:0 0 14px}
.scene-card ul{display:grid;gap:8px}
.scene-card ul li{
  font-size:14px;
  color:var(--text-2);
  padding-left:18px;
  position:relative;
}
.scene-card ul li::before{
  content:"";
  position:absolute;
  left:0;top:10px;
  width:6px;height:6px;
  border-radius:50%;
  border:1px solid var(--accent);
}

/* ============ FAQ ============ */
.faq .accordion-item{
  background:var(--panel);
  border:1px solid var(--line);
  border-radius:var(--r-md) !important;
  margin-bottom:12px;
  overflow:hidden;
}
.faq .accordion-button{
  background:transparent;
  color:var(--text);
  font-size:16px;
  font-weight:600;
  padding:18px 20px;
  box-shadow:none;
  border-radius:var(--r-md) !important;
}
.faq .accordion-button:not(.collapsed){
  color:var(--accent);
  background:rgba(19,227,164,.05);
  box-shadow:inset 3px 0 0 var(--accent),0 0 20px rgba(19,227,164,.12);
}
.faq .accordion-button:focus{box-shadow:none;outline:none}
.faq .accordion-button::after{
  filter:invert(72%) sepia(38%) saturate(560%) hue-rotate(105deg) brightness(96%);
}
.faq .accordion-body{
  padding:0 20px 20px 23px;
  color:var(--text-2);
  font-size:14.5px;
  line-height:1.85;
}

/* ============ 侧栏目录 ============ */
.side-toc{position:sticky;top:132px}
.toc-card{
  padding:20px;
  border-radius:var(--r-lg);
  background:var(--glass);
  backdrop-filter:blur(14px) saturate(120%);
  -webkit-backdrop-filter:blur(14px) saturate(120%);
  border:1px solid var(--line);
}
.toc-card h2{
  font-size:14px;
  letter-spacing:1px;
  color:var(--text-3);
  font-weight:600;
  margin:0 0 14px;
  text-transform:none;
}
.toc-card ul{display:grid;gap:2px;margin-bottom:18px}
.toc-card ul a{
  display:block;
  padding:9px 10px;
  border-radius:8px;
  font-size:14px;
  color:var(--text-2);
  border-left:2px solid transparent;
}
.toc-card ul a:hover{
  color:var(--accent);
  background:rgba(19,227,164,.07);
  border-left-color:var(--accent);
}

/* ============ CTA 横幅 ============ */
.cta-banner{
  display:flex;
  align-items:center;
  justify-content:space-between;
  gap:24px;
  flex-wrap:wrap;
  padding:30px 32px;
  border-radius:var(--r-lg);
  background:linear-gradient(120deg,rgba(19,227,164,.1),rgba(14,22,38,.7) 55%);
  backdrop-filter:blur(14px) saturate(120%);
  -webkit-backdrop-filter:blur(14px) saturate(120%);
  border:1px solid rgba(19,227,164,.28);
  box-shadow:0 0 0 1px rgba(19,227,164,.12),0 18px 40px rgba(2,8,20,.5);
}
.cta-banner h2{font-size:24px;margin:0 0 6px}
.cta-banner p{margin:0;color:var(--text-2);font-size:15px}
.cta-actions{display:flex;align-items:center;gap:12px;flex-wrap:wrap}
.icon-btn{
  width:44px;height:44px;
  display:inline-flex;
  align-items:center;
  justify-content:center;
  border-radius:var(--r-btn);
  background:rgba(255,255,255,.04);
  border:1px solid var(--line);
  color:var(--text-2);
  cursor:pointer;
  transition:all .18s ease;
}
.icon-btn:hover{color:var(--accent);border-color:rgba(19,227,164,.5);box-shadow:var(--glow)}
.icon-btn svg{width:20px;height:20px}

/* ============ 页脚 ============ */
.site-footer{
  margin-top:70px;
  border-top:1px solid rgba(19,227,164,.22);
  background:rgba(8,13,26,.72);
  position:relative;
  z-index:1;
}
.site-footer::before{
  content:"";
  position:absolute;
  top:-1px;left:0;right:0;
  height:1px;
  background:linear-gradient(90deg,transparent,rgba(19,227,164,.6),transparent);
}
.footer-grid{
  display:grid;
  grid-template-columns:1.6fr 1fr 1fr 1fr;
  gap:32px;
  padding:52px 0 36px;
}
.footer-brand p{
  color:var(--text-2);
  font-size:14px;
  line-height:1.8;
  margin:16px 0 0;
  max-width:340px;
}
.footer-col h3{
  font-size:15px;
  font-weight:600;
  color:var(--text);
  margin:0 0 14px;
}
.footer-col ul{display:grid;gap:10px}
.footer-col ul a{
  font-size:14px;
  color:var(--text-2);
  display:inline-block;
  transition:color .18s ease,transform .18s ease;
}
.footer-col ul a:hover{color:var(--accent);transform:translateX(2px)}
.footer-bottom{
  display:flex;
  align-items:center;
  justify-content:space-between;
  gap:14px;
  flex-wrap:wrap;
  padding:20px 0 26px;
  border-top:1px solid var(--line);
}
.footer-bottom p{
  margin:0;
  font-size:13px;
  color:var(--text-3);
}
.footer-bottom a{color:var(--text-3)}
.footer-bottom a:hover{color:var(--accent)}

/* ============ 移动端抽屉 ============ */
.drawer{
  position:fixed;
  inset:0;
  z-index:1100;
  display:none;
}
.drawer.is-open{display:block}
.drawer-mask{
  position:absolute;
  inset:0;
  background:rgba(3,7,16,.7);
  backdrop-filter:blur(4px);
  -webkit-backdrop-filter:blur(4px);
}
.drawer-panel{
  position:absolute;
  top:0;right:0;
  width:min(340px,88vw);
  height:100%;
  padding:24px 22px;
  overflow-y:auto;
  background:rgba(12,20,36,.92);
  backdrop-filter:blur(16px) saturate(120%);
  -webkit-backdrop-filter:blur(16px) saturate(120%);
  border-left:1px solid rgba(19,227,164,.24);
  animation:drawerIn .24s ease;
}
@keyframes drawerIn{from{transform:translateX(24px);opacity:.4}to{transform:translateX(0);opacity:1}}
.drawer-close{
  width:38px;height:38px;
  display:inline-flex;align-items:center;justify-content:center;
  background:rgba(255,255,255,.05);
  border:1px solid var(--line);
  border-radius:9px;
  color:var(--text-2);
  cursor:pointer;
  margin-left:auto;
}
.drawer-head{display:flex;align-items:center;margin-bottom:22px}
.drawer-section{margin-bottom:24px}
.drawer-section h2{
  font-size:13px;
  letter-spacing:1px;
  color:var(--text-3);
  font-weight:600;
  margin:0 0 12px;
}
.drawer-section ul{display:grid;gap:6px}
.drawer-section ul a{
  display:block;
  padding:11px 12px;
  border-radius:9px;
  color:var(--text-2);
  font-size:15px;
  border:1px solid transparent;
}
.drawer-section ul a:hover,
.drawer-section ul a[aria-current="page"]{
  color:var(--accent);
  background:rgba(19,227,164,.08);
  border-color:rgba(19,227,164,.32);
}
.drawer-tags{display:flex;flex-wrap:wrap;gap:8px}

/* ============ 响应式 ============ */
@media (max-width:1199px){
  .page-layout{grid-template-columns:minmax(0,1fr)}
  .side-toc{position:static;order:2}
  .toc-card ul{grid-template-columns:repeat(2,minmax(0,1fr))}
}
@media (max-width:991px){
  .search-box{display:none}
  .menu-toggle{display:inline-flex}
  .feature{grid-template-columns:1fr}
  .feature .card-media{aspect-ratio:16/9;min-height:auto}
  .split{grid-template-columns:1fr}
  .flow{grid-template-columns:repeat(2,minmax(0,1fr))}
  .scene-grid{grid-template-columns:1fr}
  .footer-grid{grid-template-columns:1fr 1fr;gap:26px}
  .page-hero h1{font-size:32px}
  .section-head h2{font-size:23px}
}
@media (max-width:767px){
  body{font-size:15px;line-height:1.8}
  .container{padding:0 16px}
  .brand-text{font-size:16px}
  .page-hero .container{padding-top:26px;padding-bottom:34px}
  .page-hero h1{font-size:28px}
  .page-hero .lead{font-size:15px}
  .stat-strip li{flex:1 1 100%}
  .card-grid{grid-template-columns:1fr}
  .card-body{padding:16px}
  .feature .card-body{padding:20px}
  .section{margin-bottom:48px}
  .page-main{padding:40px 0 10px}
  .flow{grid-template-columns:1fr}
  .footer-grid{grid-template-columns:1fr}
  .cta-banner{padding:22px}
  .cta-banner h2{font-size:20px}
  .toc-card ul{grid-template-columns:1fr}
  .footer-bottom{flex-direction:column;align-items:flex-start}
}
@media (max-width:519px){
  .page-hero h1{font-size:25px}
  .brand-text{font-size:15px}
  .btn-acc,.btn-line,.btn-hot{width:100%}
  .icon-btn{width:40px;height:40px}
  .cta-actions{width:100%}
}

/* roulang page: category3 */
:root{
  --bg:#060B18;
  --panel:#0C1424;
  --layer:#121C30;
  --accent:#13E3A4;
  --accent-dim:rgba(19,227,164,.12);
  --accent-line:rgba(19,227,164,.35);
  --orange:#FF7A2B;
  --orange-dim:rgba(255,122,43,.12);
  --text:#E6EDF7;
  --muted:#9AA8BF;
  --dim:#6C7A92;
  --line:rgba(255,255,255,.08);
  --line-2:rgba(255,255,255,.16);
  --glass:rgba(14,22,38,.62);
  --r-lg:16px;
  --r-md:12px;
  --r-sm:10px;
  --sh-card:0 18px 40px rgba(2,8,20,.55);
  --sh-hover:0 24px 52px rgba(2,8,20,.65);
  --glow:0 0 0 1px rgba(19,227,164,.35),0 0 24px rgba(19,227,164,.25);
  --glow-strong:0 0 0 1px rgba(19,227,164,.5),0 0 34px rgba(19,227,164,.42);
  --font-zh:"PingFang SC","HarmonyOS Sans SC","Microsoft YaHei",system-ui,-apple-system,sans-serif;
  --font-num:ui-monospace,SFMono-Regular,"SF Mono",Menlo,Consolas,monospace;
}
*,*::before,*::after{box-sizing:border-box;}
html{-webkit-text-size-adjust:100%;scroll-behavior:smooth;}
body{
  margin:0;
  font-family:var(--font-zh);
  background:var(--bg);
  color:var(--text);
  font-size:16px;
  line-height:1.85;
  overflow-x:hidden;
}
body::before{
  content:"";
  position:fixed;
  inset:0;
  background-image:linear-gradient(rgba(255,255,255,.03) 1px,transparent 1px),linear-gradient(90deg,rgba(255,255,255,.03) 1px,transparent 1px);
  background-size:72px 72px;
  pointer-events:none;
  z-index:0;
}
img{max-width:100%;display:block;}
a{color:inherit;text-decoration:none;transition:color .18s ease,transform .18s ease;}
a:hover{color:var(--accent);}
button{font-family:inherit;}
h1,h2,h3,h4{margin:0;color:var(--text);font-weight:700;letter-spacing:.2px;}
p{margin:0 0 1.1em;}
ul,ol{margin:0;padding:0;list-style:none;}
::selection{background:rgba(19,227,164,.3);color:#fff;}
:focus-visible{outline:2px solid var(--accent);outline-offset:2px;border-radius:6px;}
.container{width:100%;max-width:1240px;margin:0 auto;padding:0 20px;position:relative;z-index:1;}
.section{padding:72px 0;position:relative;z-index:1;}
.section-head{display:flex;align-items:flex-end;justify-content:space-between;gap:20px;margin-bottom:32px;flex-wrap:wrap;}
.section-head h2{font-size:28px;line-height:1.3;}
.section-head .more-link{font-size:14px;color:var(--muted);display:inline-flex;align-items:center;gap:6px;}
.section-head .more-link:hover{color:var(--accent);transform:translateX(2px);}
.eyebrow{
  display:inline-flex;align-items:center;gap:8px;
  font-size:13px;letter-spacing:2px;color:var(--accent);
  text-transform:uppercase;margin-bottom:14px;
  font-variant-numeric:tabular-nums;
}
.eyebrow::before{content:"";width:22px;height:1px;background:var(--accent);box-shadow:0 0 12px rgba(19,227,164,.6);}

/* ===== 导航 ===== */
.site-header{
  position:sticky;top:0;z-index:1030;
  background:rgba(6,11,24,.55);
  backdrop-filter:blur(14px) saturate(120%);
  -webkit-backdrop-filter:blur(14px) saturate(120%);
  border-bottom:1px solid transparent;
  transition:background .25s ease,border-color .25s ease,box-shadow .25s ease;
}
.site-header.is-stuck{
  background:rgba(8,13,26,.88);
  border-bottom-color:rgba(19,227,164,.22);
  box-shadow:0 12px 34px rgba(2,8,20,.55);
}
.header-top-inner{display:flex;align-items:center;justify-content:space-between;gap:18px;min-height:66px;}
.brand{display:inline-flex;align-items:center;gap:10px;font-weight:700;font-size:19px;color:var(--text);}
.brand:hover{color:var(--text);}
.brand-mark{
  width:36px;height:36px;border-radius:10px;
  display:inline-flex;align-items:center;justify-content:center;
  background:linear-gradient(140deg,rgba(19,227,164,.18),rgba(19,227,164,.04));
  border:1px solid var(--accent-line);
  box-shadow:0 0 18px rgba(19,227,164,.22);
  flex:0 0 auto;
}
.brand-mark svg{width:20px;height:20px;}
.brand-text{white-space:nowrap;}
.header-actions{display:flex;align-items:center;gap:12px;}
.search-box{
  display:flex;align-items:center;gap:9px;
  background:rgba(14,22,38,.7);
  border:1px solid var(--line-2);
  border-radius:var(--r-sm);
  padding:0 14px;height:42px;
  min-width:250px;
  transition:border-color .2s ease,box-shadow .2s ease;
}
.search-box i{color:var(--dim);font-size:14px;}
.search-box input{
  background:transparent;border:0;outline:none;color:var(--text);
  font-size:14px;width:100%;height:100%;
}
.search-box input::placeholder{color:var(--dim);}
.search-box:focus-within{border-color:var(--accent);box-shadow:var(--glow);}
.btn-orange-line{
  display:inline-flex;align-items:center;gap:7px;
  height:42px;padding:0 18px;
  border:1px solid var(--orange);
  color:var(--orange);
  border-radius:var(--r-sm);
  font-size:14px;font-weight:600;
  background:var(--orange-dim);
  transition:all .18s ease;
  white-space:nowrap;
}
.btn-orange-line:hover{background:var(--orange);color:#1A0C02;transform:translateY(-1px);box-shadow:0 0 22px rgba(255,122,43,.4);}
.nav-toggle{
  display:none;width:44px;height:42px;border-radius:var(--r-sm);
  background:rgba(14,22,38,.7);border:1px solid var(--line-2);
  color:var(--text);font-size:16px;cursor:pointer;
}
.nav-toggle:hover{border-color:var(--accent);color:var(--accent);}
.header-nav{border-top:1px solid var(--line);}
.nav-inner{display:flex;align-items:center;justify-content:space-between;gap:24px;min-height:50px;}
.channel-nav{display:flex;align-items:center;gap:4px;flex-wrap:wrap;}
.channel-nav a{
  position:relative;display:inline-flex;align-items:center;
  height:44px;padding:0 14px;font-size:15px;color:var(--muted);
  transition:color .18s ease;
}
.channel-nav a::after{
  content:"";position:absolute;left:14px;right:14px;bottom:6px;height:2px;
  background:var(--accent);border-radius:2px;
  transform:scaleX(0);transform-origin:center;
  box-shadow:0 0 12px rgba(19,227,164,.7);
  transition:transform .2s ease;
}
.channel-nav a:hover{color:var(--text);}
.channel-nav a:hover::after{transform:scaleX(1);}
.channel-nav a.active{color:var(--accent);}
.channel-nav a.active::after{transform:scaleX(1);}
.trend-nav{display:flex;align-items:center;gap:8px;overflow-x:auto;scrollbar-width:none;padding:4px 0;}
.trend-nav::-webkit-scrollbar{display:none;}
.tag-pill{
  display:inline-flex;align-items:center;gap:6px;
  padding:6px 14px;border-radius:999px;
  font-size:13px;color:var(--muted);white-space:nowrap;
  background:rgba(255,255,255,.03);
  border:1px solid var(--line);
  transition:all .18s ease;
}
.tag-pill:hover{color:var(--orange);border-color:var(--orange);background:var(--orange-dim);}
.tag-pill.is-hot{color:var(--orange);border-color:rgba(255,122,43,.45);background:var(--orange-dim);}

/* 移动抽屉 */
.drawer-mask{position:fixed;inset:0;background:rgba(3,6,14,.65);backdrop-filter:blur(3px);z-index:1040;opacity:0;visibility:hidden;transition:opacity .25s ease,visibility .25s ease;}
.drawer-mask.is-open{opacity:1;visibility:visible;}
.mobile-drawer{
  position:fixed;top:0;right:0;bottom:0;width:min(330px,88vw);
  background:rgba(12,20,36,.94);
  backdrop-filter:blur(16px) saturate(120%);
  border-left:1px solid var(--line-2);
  z-index:1050;padding:22px 20px;
  transform:translateX(102%);
  transition:transform .28s ease;
  overflow-y:auto;
}
.mobile-drawer.is-open{transform:translateX(0);}
.drawer-head{display:flex;align-items:center;justify-content:space-between;gap:12px;margin-bottom:20px;}
.drawer-close{background:transparent;border:1px solid var(--line-2);color:var(--text);width:38px;height:38px;border-radius:var(--r-sm);cursor:pointer;}
.drawer-close:hover{border-color:var(--accent);color:var(--accent);}
.mobile-drawer .search-box{min-width:0;width:100%;margin-bottom:18px;}
.drawer-nav{display:flex;flex-direction:column;margin-bottom:20px;}
.drawer-nav a{padding:13px 4px;font-size:15px;color:var(--muted);border-bottom:1px solid var(--line);}
.drawer-nav a.active{color:var(--accent);}
.drawer-tags{display:flex;flex-wrap:wrap;gap:8px;}
.drawer-title{font-size:13px;color:var(--dim);letter-spacing:1px;margin-bottom:10px;}

/* ===== 面包屑 ===== */
.crumb{display:flex;align-items:center;gap:8px;font-size:13px;color:var(--dim);padding:20px 0 0;position:relative;z-index:1;}
.crumb a{color:var(--dim);}
.crumb a:hover{color:var(--accent);}
.crumb .sep{color:var(--dim);}
.crumb .current{color:var(--muted);font-weight:600;}

/* ===== Hero ===== */
.page-hero{
  position:relative;
  padding:34px 0 54px;
  background-image:linear-gradient(180deg,rgba(6,11,24,.92),rgba(6,11,24,.55)),url('/assets/images/backpic/back-2.png');
  background-size:cover;
  background-position:center;
  border-bottom:1px solid var(--line);
  overflow:hidden;
}
.page-hero::after{
  content:"";position:absolute;right:-120px;top:-140px;width:460px;height:460px;
  border-radius:50%;border:1px solid rgba(19,227,164,.10);
  box-shadow:0 0 0 60px rgba(19,227,164,.03);
  pointer-events:none;
}
.hero-inner{max-width:820px;}
.page-hero h1{font-size:40px;line-height:1.2;font-weight:700;margin-bottom:16px;}
.page-hero .hero-sub{font-size:17px;color:var(--muted);max-width:640px;margin-bottom:26px;}
.hero-cta{display:flex;gap:14px;flex-wrap:wrap;margin-bottom:34px;}
.btn-main{
  display:inline-flex;align-items:center;gap:8px;
  padding:13px 26px;border-radius:var(--r-sm);
  background:var(--accent);color:#04121C;font-weight:700;font-size:15px;
  border:0;cursor:pointer;
  box-shadow:var(--glow);
  transition:all .18s ease;
}
.btn-main:hover{color:#04121C;filter:brightness(1.08);transform:translateY(-1px);box-shadow:var(--glow-strong);}
.btn-main:active{transform:translateY(0);}
.btn-line{
  display:inline-flex;align-items:center;gap:8px;
  padding:13px 26px;border-radius:var(--r-sm);
  border:1px solid var(--accent-line);color:var(--accent);
  background:rgba(19,227,164,.06);font-weight:600;font-size:15px;cursor:pointer;
  transition:all .18s ease;
}
.btn-line:hover{background:rgba(19,227,164,.14);transform:translateY(-1px);box-shadow:var(--glow);color:var(--accent);}
.btn-line:active{transform:translateY(0);}
.stat-strip{
  display:grid;grid-template-columns:repeat(4,1fr);gap:14px;
  max-width:820px;
}
.stat-card{
  background:var(--glass);
  backdrop-filter:blur(14px) saturate(120%);
  -webkit-backdrop-filter:blur(14px) saturate(120%);
  border:1px solid var(--line-2);
  border-radius:var(--r-md);
  padding:16px 18px;
}
.stat-num{
  display:block;font-family:var(--font-num);font-variant-numeric:tabular-nums;
  font-size:26px;font-weight:700;color:var(--accent);line-height:1.2;
  text-shadow:0 0 18px rgba(19,227,164,.35);
}
.stat-label{display:block;font-size:13px;color:var(--muted);margin-top:4px;}

/* ===== 卖点卡 ===== */
.feature-grid{display:grid;grid-template-columns:1.35fr 1fr;grid-template-rows:auto auto;gap:20px;}
.feature-card{
  background:var(--panel);
  border:1px solid var(--line);
  border-radius:var(--r-lg);
  box-shadow:var(--sh-card);
  overflow:hidden;
  transition:transform .22s ease,box-shadow .22s ease,border-color .22s ease;
  display:flex;flex-direction:column;
}
.feature-card:hover{transform:translateY(-4px);box-shadow:var(--sh-hover);border-color:var(--accent-line);}
.feature-card.big{grid-row:1 / span 2;}
.feature-card .thumb{position:relative;overflow:hidden;}
.feature-card .thumb img{width:100%;height:100%;object-fit:cover;transition:transform .35s ease;}
.feature-card:hover .thumb img{transform:scale(1.03);}
.feature-card.big .thumb{height:250px;}
.feature-card .body{padding:22px;}
.feature-card h3{font-size:20px;line-height:1.4;font-weight:600;margin-bottom:10px;}
.feature-card p{color:var(--muted);font-size:14.5px;margin:0;}
.feature-card .tag-line{display:flex;gap:8px;flex-wrap:wrap;margin-top:14px;}
.badge-soft{
  display:inline-flex;align-items:center;
  padding:4px 11px;border-radius:999px;
  font-size:12.5px;background:var(--accent-dim);color:var(--accent);
  border:1px solid rgba(19,227,164,.25);
}
.badge-orange{
  display:inline-flex;align-items:center;
  padding:4px 11px;border-radius:999px;
  font-size:12.5px;background:var(--orange-dim);color:var(--orange);
  border:1px solid rgba(255,122,43,.28);
}
.meta-num{font-family:var(--font-num);font-variant-numeric:tabular-nums;color:var(--dim);font-size:13px;}

/* ===== 布局 ===== */
.layout{display:grid;grid-template-columns:minmax(0,1fr) 292px;gap:40px;align-items:start;}
.main-col{min-width:0;}
.side-col{position:sticky;top:132px;}
.side-card{
  background:var(--glass);
  backdrop-filter:blur(14px) saturate(120%);
  -webkit-backdrop-filter:blur(14px) saturate(120%);
  border:1px solid var(--line-2);
  border-radius:var(--r-lg);
  padding:20px;
  box-shadow:var(--sh-card);
  margin-bottom:18px;
}
.side-card h3{font-size:15px;font-weight:600;color:var(--text);margin-bottom:14px;letter-spacing:.5px;}
.anchor-list a{
  display:flex;align-items:center;gap:10px;
  padding:9px 0;font-size:14px;color:var(--muted);
  border-bottom:1px dashed var(--line);
}
.anchor-list li:last-child a{border-bottom:0;}
.anchor-list a::before{content:"";width:6px;height:6px;border-radius:50%;background:rgba(19,227,164,.35);flex:0 0 auto;transition:all .18s ease;}
.anchor-list a:hover{color:var(--accent);transform:translateX(2px);}
.anchor-list a:hover::before{background:var(--accent);box-shadow:0 0 10px rgba(19,227,164,.8);}
.side-actions{display:flex;flex-direction:column;gap:10px;}
.side-actions .btn-main,.side-actions .btn-line{justify-content:center;width:100%;padding:11px 18px;font-size:14px;}

/* ===== 时间线 ===== */
.timeline{position:relative;padding-left:38px;margin-top:6px;}
.timeline::before{
  content:"";position:absolute;left:9px;top:8px;bottom:8px;width:3px;border-radius:2px;
  background:linear-gradient(180deg,rgba(19,227,164,.95),rgba(19,227,164,.06));
  box-shadow:0 0 18px rgba(19,227,164,.35);
}
.tl-item{position:relative;padding-bottom:34px;}
.tl-item:last-child{padding-bottom:0;}
.tl-item::before{
  content:"";position:absolute;left:-34px;top:9px;width:12px;height:12px;border-radius:50%;
  background:var(--accent);
  box-shadow:0 0 0 4px rgba(19,227,164,.14),0 0 18px rgba(19,227,164,.6);
}
.tl-stamp{
  font-family:var(--font-num);font-variant-numeric:tabular-nums;
  font-size:13px;color:var(--orange);letter-spacing:.5px;margin-bottom:6px;display:block;
}
.tl-item h3{font-size:20px;line-height:1.4;font-weight:600;margin-bottom:8px;}
.tl-item p{color:var(--muted);font-size:15px;margin-bottom:12px;max-width:640px;}
.tl-item .thumb{
  border-radius:var(--r-md);overflow:hidden;border:1px solid var(--line);
  max-width:520px;
}
.tl-item .thumb img{width:100%;height:200px;object-fit:cover;transition:transform .35s ease;}
.tl-item:hover .thumb img{transform:scale(1.03);}
.tl-tags{display:flex;gap:8px;flex-wrap:wrap;margin-top:12px;}

/* ===== 场景卡 ===== */
.scene-grid{display:grid;grid-template-columns:repeat(2,minmax(0,1fr));gap:20px;}
.scene-card{
  background:var(--panel);border:1px solid var(--line);border-radius:var(--r-lg);
  padding:22px;box-shadow:var(--sh-card);
  transition:transform .22s ease,box-shadow .22s ease,border-color .22s ease;
}
.scene-card:hover{transform:translateY(-4px);box-shadow:var(--sh-hover);border-color:var(--accent-line);}
.scene-card .icon{
  width:42px;height:42px;border-radius:var(--r-sm);
  display:flex;align-items:center;justify-content:center;
  background:var(--accent-dim);border:1px solid rgba(19,227,164,.25);
  color:var(--accent);font-size:17px;margin-bottom:14px;
}
.scene-card h3{font-size:17px;line-height:1.5;font-weight:600;margin-bottom:8px;}
.scene-card p{color:var(--muted);font-size:14.5px;margin:0;}

/* ===== 判读要点 ===== */
.point-list{display:grid;grid-template-columns:repeat(2,minmax(0,1fr));gap:16px;margin-top:6px;}
.point-item{
  background:var(--layer);border:1px solid var(--line);border-left:3px solid var(--accent);
  border-radius:var(--r-md);padding:18px 20px;
  box-shadow:0 10px 26px rgba(2,8,20,.4);
}
.point-item h4{font-size:16px;font-weight:600;margin-bottom:8px;}
.point-item p{color:var(--muted);font-size:14.5px;margin:0;}
.order-list{margin-top:22px;counter-reset:ord;}
.order-list li{
  counter-increment:ord;
  display:flex;gap:14px;align-items:flex-start;
  padding:14px 0;border-bottom:1px solid var(--line);
}
.order-list li:last-child{border-bottom:0;}
.order-list li::before{
  content:counter(ord,decimal-leading-zero);
  font-family:var(--font-num);font-variant-numeric:tabular-nums;
  color:var(--accent);font-size:13px;padding-top:3px;flex:0 0 auto;
}
.order-list strong{font-weight:600;display:block;margin-bottom:3px;font-size:15px;}
.order-list span{color:var(--muted);font-size:14.5px;}

/* ===== FAQ ===== */
.faq-list{margin-top:6px;}
.faq-item{
  background:var(--panel);border:1px solid var(--line);border-radius:var(--r-md);
  margin-bottom:12px;overflow:hidden;transition:background .2s ease,border-color .2s ease;
}
.faq-item summary{
  list-style:none;cursor:pointer;
  padding:16px 20px;font-size:16px;font-weight:600;
  display:flex;align-items:center;justify-content:space-between;gap:14px;
}
.faq-item summary::-webkit-details-marker{display:none;}
.faq-item summary::after{
  content:"\f078";font-family:"Font Awesome 6 Free";font-weight:900;
  font-size:12px;color:var(--dim);transition:transform .22s ease;
}
.faq-item[open]{border-color:rgba(19,227,164,.3);border-left:3px solid var(--accent);background:rgba(18,28,48,.92);}
.faq-item[open] summary::after{transform:rotate(180deg);color:var(--accent);}
.faq-item .faq-body{padding:0 20px 18px;color:var(--muted);font-size:14.8px;}

/* ===== CTA ===== */
.cta-band{
  background:var(--glass);
  backdrop-filter:blur(14px) saturate(120%);
  -webkit-backdrop-filter:blur(14px) saturate(120%);
  border:1px solid var(--line-2);
  border-radius:var(--r-lg);
  padding:38px 34px;
  display:flex;align-items:center;justify-content:space-between;gap:26px;flex-wrap:wrap;
  box-shadow:var(--sh-card);
  position:relative;overflow:hidden;
}
.cta-band::before{
  content:"";position:absolute;left:-60px;bottom:-120px;width:320px;height:320px;border-radius:50%;
  border:1px solid rgba(19,227,164,.12);pointer-events:none;
}
.cta-band h2{font-size:26px;line-height:1.35;margin-bottom:8px;}
.cta-band p{color:var(--muted);font-size:15px;margin:0;max-width:560px;}
.cta-actions{display:flex;gap:14px;flex-wrap:wrap;align-items:center;}

/* ===== 页脚 ===== */
.site-footer{
  border-top:1px solid rgba(19,227,164,.22);
  background:rgba(8,13,26,.72);
  padding:56px 0 26px;
  margin-top:24px;
  position:relative;z-index:1;
}
.footer-grid{display:grid;grid-template-columns:1.5fr 1fr 1fr 1fr;gap:34px;}
.footer-brand .brand{margin-bottom:14px;}
.footer-brand p{color:var(--muted);font-size:14px;max-width:340px;}
.footer-col h3{font-size:15px;font-weight:600;margin-bottom:16px;}
.footer-col ul li{margin-bottom:10px;}
.footer-col ul a{color:var(--muted);font-size:14px;display:inline-block;}
.footer-col ul a:hover{color:var(--accent);transform:translateX(2px);}
.footer-bottom{
  margin-top:40px;padding-top:20px;border-top:1px solid var(--line);
  display:flex;align-items:center;justify-content:center;gap:18px;flex-wrap:wrap;
  font-size:13px;color:var(--dim);text-align:center;
}
.footer-bottom a{color:var(--dim);}
.footer-bottom a:hover{color:var(--accent);}

/* ===== 响应式 ===== */
@media (max-width:1199px){
  .layout{grid-template-columns:minmax(0,1fr);}
  .side-col{position:static;display:grid;grid-template-columns:repeat(2,minmax(0,1fr));gap:18px;}
  .side-card{margin-bottom:0;}
}
@media (max-width:991px){
  .search-box{min-width:180px;}
  .trend-nav{display:none;}
  .channel-nav a{padding:0 11px;font-size:14.5px;}
  .feature-grid{grid-template-columns:1fr;}
  .feature-card.big{grid-row:auto;}
  .feature-card.big .thumb{height:220px;}
  .footer-grid{grid-template-columns:repeat(2,minmax(0,1fr));gap:26px;}
  .page-hero h1{font-size:32px;}
}
@media (max-width:767px){
  .header-actions .search-box,
  .header-actions .btn-orange-line{display:none;}
  .nav-toggle{display:inline-flex;align-items:center;justify-content:center;}
  .header-nav{display:none;}
  .section{padding:48px 0;}
  .section-head h2{font-size:22px;}
  .page-hero{padding:24px 0 40px;}
  .page-hero h1{font-size:28px;}
  .page-hero .hero-sub{font-size:15px;}
  .stat-strip{grid-template-columns:repeat(2,1fr);}
  .scene-grid{grid-template-columns:1fr;}
  .point-list{grid-template-columns:1fr;}
  .side-col{grid-template-columns:1fr;}
  .feature-card .body{padding:16px;}
  .timeline{padding-left:30px;}
  .timeline::before{left:7px;}
  .tl-item::before{left:-28px;}
  .cta-band{padding:26px 22px;}
  .cta-band h2{font-size:21px;}
  .footer-grid{grid-template-columns:1fr;}
}
@media (max-width:519px){
  .container{padding:0 16px;}
  .brand{font-size:16px;}
  .brand-mark{width:32px;height:32px;}
  .page-hero h1{font-size:25px;}
  .btn-main,.btn-line{padding:11px 20px;font-size:14px;}
  .stat-num{font-size:22px;}
  .feature-card h3,.tl-item h3{font-size:18px;}
  .tl-item .thumb img{height:170px;}
}

/* roulang page: category4 */
:root{
  --bg:#060B18;
  --panel:#0C1424;
  --panel-2:#121C30;
  --panel-3:#16223A;
  --accent:#13E3A4;
  --accent-soft:rgba(19,227,164,.12);
  --accent-line:rgba(19,227,164,.35);
  --warn:#FF7A2B;
  --warn-soft:rgba(255,122,43,.12);
  --text:#E6EDF7;
  --muted:#9AA8BF;
  --faint:#6C7A92;
  --line:rgba(255,255,255,.08);
  --line-strong:rgba(255,255,255,.14);
  --radius:16px;
  --radius-sm:12px;
  --radius-xs:10px;
  --shadow:0 18px 40px rgba(2,8,20,.55);
  --shadow-hover:0 24px 52px rgba(2,8,20,.65);
  --glass:rgba(14,22,38,.62);
  --gap:20px;
  --section:72px;
  --ease:180ms ease;
}
*{box-sizing:border-box;}
html{-webkit-text-size-adjust:100%;scroll-behavior:smooth;}
body{
  margin:0;
  background-color:var(--bg);
  background-image:
    linear-gradient(rgba(255,255,255,.028) 1px, transparent 1px),
    linear-gradient(90deg, rgba(255,255,255,.028) 1px, transparent 1px);
  background-size:64px 64px;
  color:var(--text);
  font-family:"PingFang SC","HarmonyOS Sans SC","Microsoft YaHei",system-ui,-apple-system,"Segoe UI",sans-serif;
  font-size:16px;
  line-height:1.85;
  letter-spacing:.01em;
  overflow-x:hidden;
}
img{max-width:100%;display:block;}
a{color:inherit;text-decoration:none;transition:color var(--ease),transform var(--ease),opacity var(--ease);}
a:hover{color:var(--accent);}
h1,h2,h3,h4{margin:0;font-weight:700;line-height:1.3;letter-spacing:.005em;}
p{margin:0;}
ul{margin:0;padding:0;list-style:none;}
button,input{font-family:inherit;}
:focus-visible{outline:2px solid var(--accent);outline-offset:3px;border-radius:6px;}
.container{
  width:100%;
  max-width:1240px;
  margin:0 auto;
  padding:0 20px;
}
.num{font-variant-numeric:tabular-nums;}

/* ============ 按钮 ============ */
.btn{
  display:inline-flex;
  align-items:center;
  justify-content:center;
  gap:8px;
  padding:12px 22px;
  border-radius:var(--radius-xs);
  border:1px solid transparent;
  font-size:15px;
  font-weight:600;
  cursor:pointer;
  transition:transform var(--ease),box-shadow var(--ease),background var(--ease),color var(--ease),border-color var(--ease),filter var(--ease);
  white-space:nowrap;
}
.btn-primary{
  background:var(--accent);
  color:#04121C;
  box-shadow:0 0 0 1px rgba(19,227,164,.35),0 0 24px rgba(19,227,164,.25);
}
.btn-primary:hover{
  color:#04121C;
  filter:brightness(1.08);
  box-shadow:0 0 0 1px rgba(19,227,164,.5),0 0 32px rgba(19,227,164,.4);
  transform:translateY(-1px);
}
.btn-primary:active{transform:translateY(1px);}
.btn-ghost{
  background:transparent;
  color:var(--accent);
  border-color:var(--accent-line);
}
.btn-ghost:hover{
  color:var(--accent);
  background:var(--accent-soft);
  box-shadow:0 0 0 1px rgba(19,227,164,.4),0 0 24px rgba(19,227,164,.22);
  transform:translateY(-1px);
}
.btn-warn{
  background:transparent;
  color:var(--warn);
  border-color:rgba(255,122,43,.45);
}
.btn-warn:hover{
  color:#0A1420;
  background:var(--warn);
  border-color:var(--warn);
  transform:translateY(-1px);
}
.btn-sm{padding:9px 16px;font-size:14px;}
.btn:disabled{opacity:.4;box-shadow:none;cursor:not-allowed;}

/* ============ 导航 ============ */
.site-header{
  position:sticky;
  top:0;
  z-index:1030;
  background:linear-gradient(180deg,rgba(6,11,24,.92),rgba(6,11,24,.55));
  border-bottom:1px solid transparent;
  transition:background var(--ease),border-color var(--ease),backdrop-filter var(--ease);
}
.site-header.is-stuck{
  background:rgba(8,13,26,.86);
  backdrop-filter:blur(14px) saturate(120%);
  -webkit-backdrop-filter:blur(14px) saturate(120%);
  border-bottom-color:rgba(19,227,164,.22);
  box-shadow:0 12px 32px rgba(2,8,20,.5);
}
.header-main-inner{
  display:flex;
  align-items:center;
  gap:22px;
  min-height:66px;
}
.brand{
  display:inline-flex;
  align-items:center;
  gap:10px;
  flex-shrink:0;
}
.brand-mark{
  width:36px;height:36px;
  display:grid;place-items:center;
  border-radius:11px;
  background:linear-gradient(150deg,rgba(19,227,164,.18),rgba(19,227,164,.04));
  border:1px solid var(--accent-line);
  box-shadow:0 0 18px rgba(19,227,164,.22);
}
.brand-mark svg{width:21px;height:21px;}
.brand-text{
  font-size:17px;
  font-weight:700;
  letter-spacing:.02em;
  color:var(--text);
}
.brand:hover .brand-text{color:var(--accent);}
.nav-search{
  flex:1 1 auto;
  max-width:420px;
  display:flex;
  align-items:center;
  gap:10px;
  padding:0 8px 0 14px;
  height:42px;
  border-radius:var(--radius-xs);
  background:var(--glass);
  border:1px solid var(--line);
  transition:border-color var(--ease),box-shadow var(--ease);
}
.nav-search:focus-within{
  border-color:var(--accent);
  box-shadow:0 0 0 1px rgba(19,227,164,.35),0 0 24px rgba(19,227,164,.2);
}
.nav-search i{color:var(--faint);font-size:14px;}
.nav-search input{
  flex:1;
  height:100%;
  background:transparent;
  border:0;
  outline:none;
  color:var(--text);
  font-size:14.5px;
}
.nav-search input::placeholder{color:var(--faint);}
.nav-search button{
  border:0;
  background:var(--accent-soft);
  color:var(--accent);
  font-size:13.5px;
  font-weight:600;
  padding:7px 14px;
  border-radius:8px;
  cursor:pointer;
  transition:background var(--ease),color var(--ease);
}
.nav-search button:hover{background:rgba(19,227,164,.22);}
.header-actions{
  display:flex;
  align-items:center;
  gap:10px;
  margin-left:auto;
  flex-shrink:0;
}
.nav-toggle{
  display:none;
  width:42px;height:42px;
  border-radius:var(--radius-xs);
  background:var(--glass);
  border:1px solid var(--line);
  color:var(--text);
  cursor:pointer;
  transition:border-color var(--ease),color var(--ease);
}
.nav-toggle:hover{border-color:var(--accent-line);color:var(--accent);}
.header-channels{
  border-top:1px solid var(--line);
  background:rgba(9,15,30,.55);
}
.channel-inner{
  display:flex;
  align-items:center;
  gap:6px;
  min-height:52px;
  overflow-x:auto;
  scrollbar-width:none;
}
.channel-inner::-webkit-scrollbar{display:none;}
.channel-link{
  position:relative;
  display:inline-flex;
  align-items:center;
  height:44px;
  padding:0 14px;
  font-size:15px;
  color:var(--muted);
  white-space:nowrap;
  transition:color var(--ease);
}
.channel-link::after{
  content:"";
  position:absolute;
  left:14px;right:14px;bottom:2px;
  height:2px;
  border-radius:2px;
  background:var(--accent);
  transform:scaleX(0);
  transform-origin:left;
  transition:transform var(--ease),box-shadow var(--ease);
}
.channel-link:hover{color:var(--accent);}
.channel-link:hover::after{transform:scaleX(1);box-shadow:0 0 12px rgba(19,227,164,.7);}
.channel-link.is-active{color:var(--accent);}
.channel-link.is-active::after{transform:scaleX(1);box-shadow:0 0 12px rgba(19,227,164,.7);}
.trend-nav{
  display:flex;
  align-items:center;
  gap:8px;
  margin-left:auto;
  padding-left:16px;
  overflow-x:auto;
  scrollbar-width:none;
}
.trend-nav::-webkit-scrollbar{display:none;}
.tag-pill{
  display:inline-flex;
  align-items:center;
  height:30px;
  padding:0 14px;
  border-radius:999px;
  font-size:13px;
  color:var(--muted);
  border:1px solid var(--line);
  background:rgba(255,255,255,.02);
  white-space:nowrap;
  transition:color var(--ease),border-color var(--ease),background var(--ease);
}
.tag-pill:hover{color:var(--accent);border-color:var(--accent-line);background:var(--accent-soft);}
.tag-pill.is-hot{color:var(--warn);border-color:rgba(255,122,43,.35);background:var(--warn-soft);}
.tag-pill.is-hot:hover{color:var(--warn);border-color:var(--warn);}
.nav-drawer{
  position:fixed;
  top:0;right:0;
  width:min(340px,88vw);
  height:100%;
  z-index:1060;
  padding:24px 22px;
  background:rgba(10,17,32,.94);
  backdrop-filter:blur(16px) saturate(120%);
  -webkit-backdrop-filter:blur(16px) saturate(120%);
  border-left:1px solid var(--line-strong);
  transform:translateX(102%);
  transition:transform 240ms ease;
  overflow-y:auto;
  display:flex;
  flex-direction:column;
  gap:20px;
}
.nav-drawer.is-open{transform:translateX(0);}
.drawer-backdrop{
  position:fixed;
  inset:0;
  z-index:1050;
  background:rgba(3,7,16,.66);
  opacity:0;
  pointer-events:none;
  transition:opacity 240ms ease;
}
.drawer-backdrop.is-open{opacity:1;pointer-events:auto;}
.drawer-title{font-size:13px;color:var(--faint);letter-spacing:.08em;text-transform:uppercase;}
.drawer-links{display:flex;flex-direction:column;gap:4px;}
.drawer-links a{
  display:flex;
  align-items:center;
  justify-content:space-between;
  padding:12px 14px;
  border-radius:var(--radius-sm);
  color:var(--muted);
  font-size:15px;
  border:1px solid transparent;
}
.drawer-links a:hover{color:var(--accent);background:rgba(19,227,164,.07);border-color:var(--accent-line);}
.drawer-links a.is-active{color:var(--accent);border-color:var(--accent-line);background:var(--accent-soft);}
.drawer-tags{display:flex;flex-wrap:wrap;gap:8px;}
.drawer-close{
  align-self:flex-end;
  width:38px;height:38px;
  border-radius:var(--radius-xs);
  background:transparent;
  border:1px solid var(--line);
  color:var(--muted);
  cursor:pointer;
}
.drawer-close:hover{color:var(--accent);border-color:var(--accent-line);}

/* ============ 面包屑 ============ */
.crumb-bar{
  padding:22px 0 0;
  font-size:13px;
  color:var(--faint);
}
.crumb-bar ol{
  display:flex;
  flex-wrap:wrap;
  align-items:center;
  gap:8px;
  list-style:none;
  margin:0;padding:0;
}
.crumb-bar li{display:flex;align-items:center;gap:8px;}
.crumb-bar .sep{color:rgba(255,255,255,.2);}
.crumb-bar .current{color:var(--text);font-weight:600;}

/* ============ Hero ============ */
.page-hero{
  position:relative;
  margin-top:20px;
  border-radius:24px;
  overflow:hidden;
  border:1px solid var(--line);
  background-image:linear-gradient(180deg,rgba(6,11,24,.92),rgba(6,11,24,.58)),url("/assets/images/backpic/back-1.png");
  background-size:cover;
  background-position:center;
}
.page-hero::after{
  content:"";
  position:absolute;
  right:-140px;top:-140px;
  width:460px;height:460px;
  border-radius:50%;
  border:1px solid rgba(19,227,164,.14);
  box-shadow:0 0 0 60px rgba(19,227,164,.04);
  pointer-events:none;
}
.hero-inner{
  position:relative;
  z-index:2;
  padding:56px 48px 44px;
  max-width:820px;
}
.hero-badge{
  display:inline-flex;
  align-items:center;
  gap:8px;
  height:30px;
  padding:0 14px;
  border-radius:999px;
  font-size:13px;
  color:var(--accent);
  background:var(--accent-soft);
  border:1px solid var(--accent-line);
  margin-bottom:20px;
}
.hero-title{
  font-size:40px;
  line-height:1.2;
  font-weight:700;
  margin-bottom:16px;
}
.hero-title span{color:var(--accent);}
.hero-lead{
  font-size:16.5px;
  color:var(--muted);
  line-height:1.9;
  max-width:660px;
}
.hero-actions{
  display:flex;
  flex-wrap:wrap;
  gap:14px;
  margin-top:28px;
}
.hero-stats{
  display:grid;
  grid-template-columns:repeat(3,minmax(0,1fr));
  gap:18px;
  margin-top:34px;
  padding-top:26px;
  border-top:1px solid var(--line);
}
.hero-stat b{
  display:block;
  font-size:26px;
  font-weight:700;
  color:var(--accent);
  line-height:1.2;
  font-variant-numeric:tabular-nums;
}
.hero-stat b small{font-size:13px;color:var(--muted);margin-left:4px;font-weight:500;}
.hero-stat span{font-size:13px;color:var(--faint);}

/* ============ 通用板块 ============ */
.section{padding-top:var(--section);}
.section-head{
  display:flex;
  align-items:flex-end;
  justify-content:space-between;
  gap:18px;
  margin-bottom:26px;
  flex-wrap:wrap;
}
.section-head h2{
  font-size:28px;
  position:relative;
  padding-left:16px;
}
.section-head h2::before{
  content:"";
  position:absolute;
  left:0;top:50%;
  transform:translateY(-50%);
  width:3px;height:26px;
  border-radius:3px;
  background:var(--accent);
  box-shadow:0 0 14px rgba(19,227,164,.75);
}
.section-head p{color:var(--faint);font-size:14px;max-width:640px;}
.link-more{
  font-size:14px;
  color:var(--accent);
  display:inline-flex;
  align-items:center;
  gap:6px;
  white-space:nowrap;
}
.link-more:hover{color:#fff;gap:10px;}

/* ============ 布局 ============ */
.layout-grid{
  display:grid;
  grid-template-columns:minmax(0,8.2fr) minmax(0,3.8fr);
  gap:30px;
  align-items:start;
}
.side-sticky{
  position:sticky;
  top:106px;
  display:flex;
  flex-direction:column;
  gap:20px;
}
.side-card{
  padding:20px;
  border-radius:var(--radius);
  background:var(--glass);
  backdrop-filter:blur(14px) saturate(120%);
  -webkit-backdrop-filter:blur(14px) saturate(120%);
  border:1px solid var(--line);
  box-shadow:var(--shadow);
}
.side-card h3{font-size:16px;margin-bottom:14px;}
.toc-list a{
  display:flex;
  align-items:center;
  gap:10px;
  padding:9px 0;
  font-size:14.5px;
  color:var(--muted);
  border-bottom:1px dashed rgba(255,255,255,.06);
}
.toc-list li:last-child a{border-bottom:0;}
.toc-list a:hover{color:var(--accent);transform:translateX(2px);}
.toc-list a i{font-size:12px;color:var(--faint);}

/* ============ 指标数据卡 ============ */
.metric-grid{
  display:grid;
  grid-template-columns:repeat(2,minmax(0,1fr));
  gap:18px;
}
.metric-card{
  position:relative;
  padding:24px 22px;
  border-radius:var(--radius);
  background:var(--glass);
  backdrop-filter:blur(14px) saturate(120%);
  -webkit-backdrop-filter:blur(14px) saturate(120%);
  border:1px solid var(--line);
  box-shadow:var(--shadow);
  overflow:hidden;
  transition:transform var(--ease),box-shadow var(--ease),border-color var(--ease);
}
.metric-card:hover{
  transform:translateY(-4px);
  box-shadow:var(--shadow-hover);
  border-color:var(--accent-line);
}
.metric-card::before{
  content:"";
  position:absolute;
  left:0;top:0;
  width:100%;height:1px;
  background:linear-gradient(90deg,rgba(19,227,164,.7),transparent 70%);
  opacity:.7;
}
.metric-label{
  font-size:13.5px;
  color:var(--muted);
  display:flex;
  align-items:center;
  gap:8px;
}
.metric-label i{color:var(--accent);font-size:13px;}
.metric-value{
  display:flex;
  align-items:baseline;
  gap:6px;
  margin:14px 0 8px;
}
.metric-value strong{
  font-size:38px;
  line-height:1;
  font-weight:700;
  color:var(--accent);
  font-variant-numeric:tabular-nums;
  letter-spacing:-.01em;
}
.metric-value em{
  font-style:normal;
  font-size:14px;
  color:var(--muted);
}
.metric-note{font-size:13px;color:var(--faint);line-height:1.7;}
.metric-card.is-warn .metric-value strong{color:var(--warn);}
.metric-card.is-warn::before{background:linear-gradient(90deg,rgba(255,122,43,.7),transparent 70%);}
.metric-card.is-warn .metric-label i{color:var(--warn);}

/* ============ 对比表 ============ */
.table-card{
  border-radius:var(--radius);
  background:rgba(12,20,36,.72);
  border:1px solid var(--line);
  box-shadow:var(--shadow);
  overflow:hidden;
}
.table-wrap{overflow-x:auto;}
table.compare{
  width:100%;
  min-width:560px;
  border-collapse:collapse;
  font-size:15px;
}
table.compare thead th{
  background:rgba(18,28,48,.92);
  backdrop-filter:blur(10px);
  -webkit-backdrop-filter:blur(10px);
  color:var(--text);
  font-size:14.5px;
  font-weight:700;
  text-align:left;
  padding:16px 20px;
  border-bottom:1px solid var(--line-strong);
  white-space:nowrap;
}
table.compare thead th:first-child{color:var(--muted);font-weight:600;}
table.compare tbody td{
  padding:15px 20px;
  border-bottom:1px solid rgba(255,255,255,.05);
  color:var(--muted);
  vertical-align:top;
}
table.compare tbody tr:nth-child(even){background:rgba(255,255,255,.03);}
table.compare tbody tr:hover{background:rgba(19,227,164,.05);}
table.compare tbody td:first-child{
  color:var(--text);
  font-weight:600;
  white-space:nowrap;
}
table.compare tbody td .hl{color:var(--accent);font-weight:600;font-variant-numeric:tabular-nums;}
table.compare tbody tr:last-child td{border-bottom:0;}
.table-foot{
  padding:14px 20px;
  font-size:13px;
  color:var(--faint);
  border-top:1px solid var(--line);
  background:rgba(8,14,28,.6);
}

/* ============ 场景图文 ============ */
.scene-wrap{
  display:grid;
  grid-template-columns:minmax(0,6fr) minmax(0,6fr);
  gap:26px;
  align-items:stretch;
}
.scene-media{
  position:relative;
  border-radius:var(--radius);
  overflow:hidden;
  border:1px solid var(--line);
  box-shadow:var(--shadow);
  min-height:280px;
}
.scene-media img{
  width:100%;height:100%;
  object-fit:cover;
  transition:transform 400ms ease;
}
.scene-media:hover img{transform:scale(1.03);}
.scene-media figcaption{
  position:absolute;
  left:0;right:0;bottom:0;
  padding:16px 18px;
  font-size:12.5px;
  color:var(--muted);
  background:linear-gradient(180deg,transparent,rgba(4,9,20,.9));
}
.scene-list{display:flex;flex-direction:column;gap:14px;}
.scene-item{
  padding:18px 20px;
  border-radius:var(--radius-sm);
  background:var(--glass);
  border:1px solid var(--line);
  transition:transform var(--ease),border-color var(--ease),box-shadow var(--ease);
}
.scene-item:hover{
  transform:translateY(-4px);
  border-color:var(--accent-line);
  box-shadow:var(--shadow-hover);
}
.scene-item h3{
  font-size:17px;
  margin-bottom:8px;
  display:flex;
  align-items:center;
  gap:10px;
}
.scene-item h3 i{color:var(--accent);font-size:15px;}
.scene-item p{font-size:14.5px;color:var(--muted);line-height:1.8;}

/* ============ 流程 ============ */
.steps{
  display:grid;
  grid-template-columns:repeat(4,minmax(0,1fr));
  gap:18px;
  counter-reset:step;
}
.step-card{
  position:relative;
  padding:26px 20px 22px;
  border-radius:var(--radius);
  background:rgba(12,20,36,.68);
  border:1px solid var(--line);
  transition:transform var(--ease),border-color var(--ease);
}
.step-card:hover{transform:translateY(-4px);border-color:var(--accent-line);}
.step-index{
  display:inline-flex;
  align-items:center;
  justify-content:center;
  width:34px;height:34px;
  border-radius:11px;
  font-size:14px;
  font-weight:700;
  color:var(--accent);
  background:var(--accent-soft);
  border:1px solid var(--accent-line);
  font-variant-numeric:tabular-nums;
  margin-bottom:16px;
}
.step-card h3{font-size:17px;margin-bottom:8px;}
.step-card p{font-size:14px;color:var(--muted);line-height:1.8;}

/* ============ FAQ ============ */
.faq-list{display:flex;flex-direction:column;gap:12px;}
.faq-item{
  border-radius:var(--radius-sm);
  background:rgba(12,20,36,.68);
  border:1px solid var(--line);
  overflow:hidden;
  transition:border-color var(--ease),background var(--ease);
}
.faq-item[open]{
  border-color:var(--accent-line);
  background:rgba(19,227,164,.05);
}
.faq-item summary{
  cursor:pointer;
  list-style:none;
  padding:18px 20px 18px 22px;
  font-size:16px;
  font-weight:600;
  display:flex;
  align-items:center;
  justify-content:space-between;
  gap:16px;
  position:relative;
}
.faq-item summary::-webkit-details-marker{display:none;}
.faq-item summary::before{
  content:"";
  position:absolute;
  left:0;top:12px;bottom:12px;
  width:3px;
  border-radius:3px;
  background:transparent;
  transition:background var(--ease),box-shadow var(--ease);
}
.faq-item[open] summary::before{
  background:var(--accent);
  box-shadow:0 0 14px rgba(19,227,164,.75);
}
.faq-item summary i{color:var(--faint);font-size:14px;transition:transform var(--ease),color var(--ease);}
.faq-item[open] summary i{transform:rotate(180deg);color:var(--accent);}
.faq-item .faq-body{
  padding:0 20px 20px 22px;
  font-size:14.5px;
  color:var(--muted);
  line-height:1.85;
}

/* ============ CTA ============ */
.cta-banner{
  margin-top:var(--section);
  position:relative;
  border-radius:24px;
  overflow:hidden;
  border:1px solid var(--accent-line);
  background:linear-gradient(120deg,rgba(19,227,164,.14),rgba(12,20,36,.75) 55%),url("/assets/images/backpic/back-3.png");
  background-size:cover;
  background-position:center;
  box-shadow:0 0 0 1px rgba(19,227,164,.18),0 24px 56px rgba(2,8,20,.6);
}
.cta-inner{
  position:relative;
  z-index:2;
  padding:44px 44px;
  display:flex;
  align-items:center;
  justify-content:space-between;
  gap:30px;
  flex-wrap:wrap;
  background:rgba(6,11,24,.55);
  backdrop-filter:blur(14px) saturate(120%);
  -webkit-backdrop-filter:blur(14px) saturate(120%);
}
.cta-text h2{font-size:26px;margin-bottom:10px;}
.cta-text p{color:var(--muted);font-size:15px;max-width:560px;}
.cta-actions{display:flex;flex-wrap:wrap;gap:14px;align-items:center;}
.share-icons{display:flex;gap:10px;margin-left:6px;}
.share-icons button{
  width:40px;height:40px;
  border-radius:var(--radius-xs);
  background:rgba(255,255,255,.04);
  border:1px solid var(--line);
  color:var(--muted);
  cursor:pointer;
  transition:color var(--ease),border-color var(--ease),transform var(--ease);
}
.share-icons button:hover{color:var(--accent);border-color:var(--accent-line);transform:translateY(-2px);}

/* ============ 页脚 ============ */
.site-footer{
  margin-top:80px;
  border-top:1px solid rgba(19,227,164,.22);
  background:linear-gradient(180deg,rgba(9,15,30,.72),rgba(6,11,24,.96));
  box-shadow:0 -1px 0 rgba(19,227,164,.12);
}
.footer-grid{
  display:grid;
  grid-template-columns:2.2fr 1fr 1fr 1fr;
  gap:32px;
  padding:56px 0 40px;
}
.footer-brand .brand{margin-bottom:16px;}
.footer-brand p{font-size:14px;color:var(--faint);line-height:1.85;max-width:360px;}
.footer-col h3{
  font-size:14px;
  color:var(--text);
  margin-bottom:16px;
  letter-spacing:.04em;
}
.footer-col li{margin-bottom:10px;}
.footer-col a{
  font-size:14px;
  color:var(--muted);
  display:inline-block;
}
.footer-col a:hover{color:var(--accent);transform:translateX(2px);}
.footer-bottom{
  border-top:1px solid var(--line);
  padding:22px 0 30px;
  display:flex;
  align-items:center;
  justify-content:center;
  gap:18px;
  flex-wrap:wrap;
  font-size:13px;
  color:var(--faint);
  text-align:center;
}
.footer-bottom a{color:var(--faint);}
.footer-bottom a:hover{color:var(--accent);}

/* ============ 响应式 ============ */
@media (max-width:1199.98px){
  .layout-grid{grid-template-columns:1fr;}
  .side-sticky{position:static;}
  .nav-search{max-width:320px;}
}
@media (max-width:991.98px){
  :root{--section:56px;}
  .nav-search{display:none;}
  .nav-toggle{display:inline-flex;align-items:center;justify-content:center;}
  .header-actions .btn{display:none;}
  .channel-inner{padding-right:12px;}
  .trend-nav{display:none;}
  .hero-inner{padding:44px 28px 36px;}
  .hero-title{font-size:32px;}
  .steps{grid-template-columns:repeat(2,minmax(0,1fr));}
  .scene-wrap{grid-template-columns:1fr;}
  .footer-grid{grid-template-columns:1.6fr 1fr 1fr;gap:26px;}
  .footer-brand{grid-column:1 / -1;}
}
@media (max-width:767.98px){
  :root{--section:48px;--gap:16px;}
  body{font-size:15px;}
  .header-main-inner{min-height:60px;gap:12px;}
  .brand-text{font-size:15.5px;}
  .hero-title{font-size:28px;}
  .hero-lead{font-size:15px;}
  .hero-inner{padding:36px 20px 30px;}
  .hero-stats{grid-template-columns:1fr;gap:14px;}
  .hero-stat b{font-size:23px;}
  .section-head h2{font-size:22px;}
  .section-head h2::before{height:22px;}
  .metric-grid{grid-template-columns:1fr;}
  .metric-value strong{font-size:32px;}
  .steps{grid-template-columns:1fr;}
  .cta-inner{padding:30px 22px;}
  .cta-text h2{font-size:22px;}
  .footer-grid{grid-template-columns:1fr 1fr;gap:24px;padding:40px 0 30px;}
  .footer-brand{grid-column:1 / -1;}
  table.compare{min-width:520px;}
}
@media (max-width:519.98px){
  .container{padding:0 16px;}
  .hero-title{font-size:26px;}
  .metric-card{padding:20px 18px;}
  .scene-item{padding:16px;}
  .footer-grid{grid-template-columns:1fr;}
  .cta-actions{width:100%;}
  .cta-actions .btn{flex:1 1 auto;}
}