/* roulang page: index */
:root{
  --bg-0:#05070E;
  --bg-1:#0A0F1C;
  --panel:#0E1526;
  --primary:#23D7FF;
  --primary-2:#0FA8D8;
  --accent:#7A5CFF;
  --warm:#FFB94A;
  --t1:#EAF2FF;
  --t2:#A9B7CF;
  --t3:#6C7A93;
  --line:rgba(255,255,255,.10);
  --glass:rgba(255,255,255,.055);
  --radius:18px;
  --radius-sm:12px;
  --shadow-card:0 18px 50px -22px rgba(0,0,0,.85), inset 0 1px 0 rgba(255,255,255,.06);
  --shadow-glow:0 0 0 1px rgba(35,215,255,.45), 0 8px 32px -8px rgba(35,215,255,.5);
  --sidebar-w:240px;
  --shell-pad-l:24px;
  --shell-pad-r:40px;
}
*,*::before,*::after{box-sizing:border-box}
html{-webkit-text-size-adjust:100%}
body{
  margin:0;
  min-height:100vh;
  font-family:"PingFang SC","HarmonyOS Sans SC","MiSans","Microsoft YaHei",system-ui,-apple-system,"Segoe UI",sans-serif;
  font-size:16px;
  line-height:1.75;
  color:var(--t2);
  background-color:var(--bg-0);
  background-image:
    radial-gradient(920px 540px at 10% -10%, rgba(35,215,255,.10), transparent 62%),
    radial-gradient(780px 520px at 98% 2%, rgba(122,92,255,.11), transparent 60%),
    linear-gradient(rgba(255,255,255,.02) 1px, transparent 1px),
    linear-gradient(90deg, rgba(255,255,255,.02) 1px, transparent 1px);
  background-size:auto,auto,24px 24px,24px 24px;
  background-attachment:fixed;
  font-feature-settings:"tnum" 1;
  overflow-x:hidden;
}
h1,h2,h3,h4{margin:0;color:var(--t1);font-weight:700;line-height:1.25}
p{margin:0}
a{color:inherit;text-decoration:none;transition:color .2s ease-out,border-color .2s ease-out,background-color .2s ease-out,box-shadow .2s ease-out,transform .2s ease-out}
img{max-width:100%;display:block}
ul,ol{margin:0;padding:0;list-style:none}
button{font:inherit;color:inherit;background:none;border:none;cursor:pointer}
:focus-visible{outline:2px solid rgba(35,215,255,.7);outline-offset:3px;border-radius:6px}
::-webkit-scrollbar{width:10px;height:10px}
::-webkit-scrollbar-track{background:#070B14}
::-webkit-scrollbar-thumb{background:rgba(35,215,255,.22);border-radius:999px;border:2px solid #070B14}
::-webkit-scrollbar-thumb:hover{background:rgba(35,215,255,.4)}

/* ===== 侧栏 ===== */
.sidebar{
  position:fixed;top:0;left:0;bottom:0;width:var(--sidebar-w);
  z-index:60;
  display:flex;flex-direction:column;gap:8px;
  padding:22px 16px 18px;
  background:linear-gradient(180deg,rgba(14,21,38,.96),rgba(7,11,20,.98));
  border-right:1px solid var(--line);
  backdrop-filter:blur(14px);
  transition:width .22s ease-out,transform .28s ease-out;
}
.side-brand{padding:2px 4px 14px;border-bottom:1px solid rgba(255,255,255,.07)}
.brand{display:flex;align-items:center;gap:12px}
.brand-mark{
  flex:none;width:40px;height:40px;border-radius:12px;display:grid;place-items:center;
  font-size:15px;font-weight:700;letter-spacing:.02em;color:#04101A;
  background:linear-gradient(140deg,var(--primary),var(--primary-2));
  box-shadow:0 8px 22px -8px rgba(35,215,255,.7);
}
.brand-text{display:flex;flex-direction:column;min-width:0}
.brand-text strong{font-size:15px;font-weight:700;color:var(--t1);letter-spacing:.01em;white-space:nowrap;overflow:hidden;text-overflow:ellipsis}
.brand-text em{font-style:normal;font-size:11px;color:var(--t3);letter-spacing:.08em}
.side-nav{flex:1;display:flex;flex-direction:column;gap:4px;overflow-y:auto;padding-top:6px}
.nav-group-label{font-size:11px;letter-spacing:.08em;color:var(--t3);padding:16px 12px 6px;margin:0}
.nav-group-label:first-child{padding-top:4px}
.nav-item{
  position:relative;display:flex;align-items:center;gap:12px;
  padding:11px 12px;border-radius:12px;color:var(--t2);font-size:15px;
  border:1px solid transparent;
}
.nav-item i{width:20px;font-size:16px;text-align:center;flex:none;color:var(--t3);transition:color .2s ease-out}
.nav-item:hover{background:rgba(255,255,255,.05);color:var(--t1);border-color:rgba(255,255,255,.08)}
.nav-item:hover i{color:var(--primary)}
.nav-item.active{
  background:rgba(35,215,255,.12);color:var(--t1);border-color:rgba(35,215,255,.22);
}
.nav-item.active i{color:var(--primary)}
.nav-item.active::before{
  content:"";position:absolute;left:-16px;top:50%;transform:translateY(-50%);
  width:3px;height:22px;border-radius:0 3px 3px 0;background:var(--primary);
  box-shadow:0 0 12px rgba(35,215,255,.8);
}
.side-foot{
  margin-top:auto;padding:14px;border-radius:14px;border:1px solid var(--line);
  background:linear-gradient(160deg,rgba(35,215,255,.10),rgba(122,92,255,.08));
}
.side-foot p{font-size:12px;color:var(--t2);margin-bottom:10px;line-height:1.5}
.side-foot-btn{
  display:block;text-align:center;padding:9px 10px;border-radius:10px;
  font-size:13px;font-weight:600;color:#04101A;
  background:linear-gradient(140deg,var(--primary),var(--primary-2));
  transition:box-shadow .2s ease-out,transform .2s ease-out;
}
.side-foot-btn:hover{box-shadow:var(--shadow-glow);transform:translateY(-1px)}

/* ===== 移动端顶栏与抽屉 ===== */
.topbar{
  display:none;position:fixed;top:0;left:0;right:0;height:58px;z-index:70;
  align-items:center;gap:12px;padding:0 16px;
  background:rgba(8,12,22,.92);backdrop-filter:blur(14px);
  border-bottom:1px solid var(--line);
}
.menu-btn{width:38px;height:38px;border-radius:10px;border:1px solid var(--line);display:grid;place-items:center;color:var(--t1);font-size:15px}
.menu-btn:hover{border-color:rgba(35,215,255,.5);color:var(--primary)}
.topbar-brand{font-size:15px;font-weight:700;color:var(--t1);white-space:nowrap;overflow:hidden;text-overflow:ellipsis}
.topbar-cta{margin-left:auto;padding:7px 14px;border-radius:10px;font-size:13px;font-weight:600;color:#04101A;background:linear-gradient(140deg,var(--primary),var(--primary-2))}
.drawer-mask{
  position:fixed;inset:0;z-index:55;background:rgba(3,5,10,.66);backdrop-filter:blur(2px);
  opacity:0;pointer-events:none;transition:opacity .25s ease-out;
}
.drawer-mask.show{opacity:1;pointer-events:auto}

/* ===== 主区域 ===== */
.main-shell{
  margin-left:var(--sidebar-w);
  padding-left:var(--shell-pad-l);
  padding-right:var(--shell-pad-r);
  min-height:100vh;
}
.wrap{max-width:1320px;margin:0 auto}
.section{padding:96px 0 0}
.section:last-of-type{padding-bottom:96px}
.section-head{display:flex;align-items:flex-end;justify-content:space-between;gap:20px;margin-bottom:28px}
.section-head h2{font-size:32px;line-height:1.25;letter-spacing:.01em}
.section-head p{margin-top:10px;font-size:14px;color:var(--t3);max-width:640px}
.section-head h2::before{
  content:"";display:inline-block;width:3px;height:22px;border-radius:2px;margin-right:12px;
  vertical-align:-3px;background:linear-gradient(180deg,var(--primary),var(--accent));
  box-shadow:0 0 14px rgba(35,215,255,.7);
}
.link-more{display:inline-flex;align-items:center;gap:7px;font-size:14px;color:var(--t2);white-space:nowrap;padding:6px 2px}
.link-more:hover{color:var(--primary)}
.link-more i{font-size:12px;transition:transform .2s ease-out}
.link-more:hover i{transform:translateX(4px)}

/* ===== 按钮 ===== */
.btn{
  display:inline-flex;align-items:center;justify-content:center;gap:9px;
  height:44px;padding:0 22px;border-radius:12px;font-size:15px;font-weight:600;
  border:1px solid transparent;transition:all .2s ease-out;white-space:nowrap;
}
.btn-primary{
  color:#04101A;background:linear-gradient(140deg,var(--primary),var(--primary-2));
  box-shadow:0 10px 30px -12px rgba(35,215,255,.85);
}
.btn-primary:hover{box-shadow:var(--shadow-glow);transform:translateY(-1px)}
.btn-primary:active{transform:translateY(1px)}
.btn-ghost{color:var(--t1);background:rgba(255,255,255,.05);border-color:var(--line);backdrop-filter:blur(8px)}
.btn-ghost:hover{border-color:rgba(35,215,255,.55);color:var(--primary);background:rgba(35,215,255,.08)}
.btn-sm{height:38px;padding:0 16px;font-size:13px;border-radius:10px}

/* ===== 徽章 ===== */
.badge{
  display:inline-flex;align-items:center;gap:6px;
  padding:4px 11px;border-radius:999px;font-size:12px;line-height:1.6;letter-spacing:.02em;
  color:var(--primary);background:rgba(35,215,255,.10);border:1px solid rgba(35,215,255,.22);
}
.badge-accent{color:#B9A9FF;background:rgba(122,92,255,.12);border-color:rgba(122,92,255,.26)}
.badge-warm{color:var(--warm);background:rgba(255,185,74,.10);border-color:rgba(255,185,74,.24)}

/* ===== Hero ===== */
.hero{
  position:relative;overflow:hidden;
  margin-left:calc(var(--shell-pad-l) * -1);
  margin-right:calc(var(--shell-pad-r) * -1);
  height:76vh;min-height:560px;display:flex;align-items:center;
  border-bottom:1px solid var(--line);
}
.hero-bg{
  position:absolute;inset:0;
  background-image:url('/assets/images/backpic/back-1.png');
  background-size:cover;background-position:center;
  transform:scale(1.02);
}
.hero-bg::after{
  content:"";position:absolute;inset:0;
  background:
    linear-gradient(180deg,rgba(5,7,14,.66),rgba(5,7,14,.58) 45%,rgba(5,7,14,.78)),
    radial-gradient(720px 460px at 18% 88%, rgba(35,215,255,.22), transparent 62%),
    radial-gradient(620px 420px at 88% 12%, rgba(122,92,255,.20), transparent 64%);
}
.hero::after{
  content:"";position:absolute;left:0;right:0;bottom:0;height:140px;
  background:linear-gradient(180deg,rgba(5,7,14,0),var(--bg-0));pointer-events:none;
}
.hero-inner{
  position:relative;z-index:2;width:100%;max-width:1320px;margin:0 auto;
  padding:0 calc(var(--shell-pad-r) + 24px);
}
.hero-content{max-width:720px}
.hero-badge{
  display:inline-flex;align-items:center;gap:8px;
  padding:6px 14px;border-radius:999px;font-size:12.5px;letter-spacing:.04em;
  color:var(--primary);background:rgba(35,215,255,.10);border:1px solid rgba(35,215,255,.3);
  backdrop-filter:blur(6px);
}
.hero h1{
  margin-top:22px;font-size:52px;line-height:1.14;letter-spacing:-.01em;
  text-shadow:0 12px 40px rgba(0,0,0,.55);
}
.hero-sub{margin-top:18px;font-size:16.5px;line-height:1.75;color:#C6D3E6;max-width:620px}
.hero-actions{display:flex;flex-wrap:wrap;gap:14px;margin-top:30px}
.hero-stats{display:flex;flex-wrap:wrap;align-items:center;gap:0;margin-top:38px}
.hero-stats li{
  display:flex;flex-direction:column;gap:2px;padding:0 22px;
  border-left:1px solid rgba(255,255,255,.16);
}
.hero-stats li:first-child{padding-left:0;border-left:none}
.hero-stats strong{font-size:20px;font-weight:700;color:var(--t1);line-height:1.2}
.hero-stats span{font-size:12.5px;color:var(--t3);letter-spacing:.02em}

/* ===== 横滑片库 ===== */
.rail-wrap{position:relative}
.rail-track{
  display:flex;gap:20px;overflow-x:auto;scroll-snap-type:x mandatory;
  padding:4px 4px 14px;scrollbar-width:none;
}
.rail-track::-webkit-scrollbar{display:none}
.rail-card{
  position:relative;flex:none;scroll-snap-align:start;
  border-radius:var(--radius);overflow:hidden;border:1px solid var(--line);
  background:var(--panel);box-shadow:var(--shadow-card);
  transition:transform .2s ease-out,border-color .2s ease-out;
}
.rail-card:hover{transform:translateY(-4px);border-color:rgba(35,215,255,.38)}
.rail-card img{width:100%;height:100%;object-fit:cover;transition:transform .3s ease-out}
.rail-card:hover img{transform:scale(1.04)}
.rail-card.portrait{width:206px;height:300px}
.rail-card.landscape{width:380px;height:300px}
.rail-shade{
  position:absolute;inset:0;
  background:linear-gradient(180deg,rgba(5,7,14,0) 34%,rgba(5,7,14,.72) 78%,rgba(5,7,14,.94));
}
.rail-info{position:absolute;left:0;right:0;bottom:0;padding:16px}
.rail-info h3{font-size:16px;line-height:1.4;margin-bottom:6px}
.rail-info p{font-size:12.5px;color:var(--t3);display:flex;align-items:center;gap:8px}
.rail-corner{position:absolute;top:12px;left:12px}
.rail-btn{
  position:absolute;top:50%;transform:translateY(-50%);z-index:5;
  width:42px;height:42px;border-radius:999px;display:grid;place-items:center;
  color:var(--t1);background:rgba(10,15,28,.82);border:1px solid var(--line);
  backdrop-filter:blur(10px);transition:all .2s ease-out;
}
.rail-btn:hover{border-color:rgba(35,215,255,.6);color:var(--primary);box-shadow:var(--shadow-glow)}
.rail-prev{left:-14px}
.rail-next{right:-14px}

/* ===== 热播推荐（非对称） ===== */
.feature-grid{
  display:grid;gap:20px;
  grid-template-columns:1.7fr 1fr 1fr;
  grid-template-rows:repeat(2,196px);
}
.reco-card{
  position:relative;overflow:hidden;border-radius:var(--radius);
  border:1px solid var(--line);background:var(--panel);box-shadow:var(--shadow-card);
  transition:transform .2s ease-out,border-color .2s ease-out;
}
.reco-card:hover{transform:translateY(-4px);border-color:rgba(35,215,255,.38)}
.reco-card img{width:100%;height:100%;object-fit:cover;transition:transform .3s ease-out}
.reco-card:hover img{transform:scale(1.04)}
.reco-card.big{grid-column:1;grid-row:1 / span 2}
.reco-card .shade{position:absolute;inset:0;background:linear-gradient(180deg,rgba(5,7,14,.05) 30%,rgba(5,7,14,.82) 82%,rgba(5,7,14,.96))}
.reco-info{position:absolute;left:0;right:0;bottom:0;padding:18px}
.reco-card.big .reco-info{padding:26px}
.reco-info h3{font-size:16px;line-height:1.4}
.reco-card.big .reco-info h3{font-size:24px}
.reco-info p{margin-top:8px;font-size:13px;color:var(--t3);display:-webkit-box;-webkit-line-clamp:1;-webkit-box-orient:vertical;overflow:hidden}
.reco-card.big .reco-info p{-webkit-line-clamp:2;font-size:14px;color:var(--t2)}
.reco-top{position:absolute;top:14px;left:14px;display:flex;gap:8px}

/* ===== 片单分区 ===== */
.group-block + .group-block{margin-top:52px}
.group-head{display:flex;align-items:center;gap:12px;margin-bottom:18px}
.group-head .bar{width:3px;height:20px;border-radius:2px;background:linear-gradient(180deg,var(--primary),var(--accent));box-shadow:0 0 12px rgba(35,215,255,.65)}
.group-head h3{font-size:20px}
.group-head a{margin-left:auto;font-size:13px;color:var(--t3)}
.group-head a:hover{color:var(--primary)}
.grid-4{display:grid;grid-template-columns:repeat(4,1fr);gap:20px}
.poster{
  position:relative;border-radius:var(--radius);overflow:hidden;
  border:1px solid var(--line);background:var(--panel);box-shadow:var(--shadow-card);
  transition:transform .2s ease-out,border-color .2s ease-out;
}
.poster:hover{transform:translateY(-4px);border-color:rgba(35,215,255,.38)}
.poster .cover{position:relative;aspect-ratio:2 / 3;overflow:hidden}
.poster .cover img{width:100%;height:100%;object-fit:cover;transition:transform .3s ease-out}
.poster:hover .cover img{transform:scale(1.04)}
.poster .tagline{position:absolute;top:10px;left:10px}
.poster .body{padding:14px 15px 16px}
.poster .body h4{font-size:15px;line-height:1.4;color:var(--t1)}
.poster .body p{margin-top:6px;font-size:12.5px;color:var(--t3)}

/* ===== 最新信息 ===== */
.news-grid{display:grid;grid-template-columns:repeat(2,1fr);gap:20px}
.news-card{
  position:relative;border-radius:var(--radius);overflow:hidden;
  background:linear-gradient(160deg,rgba(255,255,255,.07),rgba(255,255,255,.025));
  border:1px solid var(--line);box-shadow:var(--shadow-card);
  transition:transform .2s ease-out,border-color .2s ease-out;
}
.news-card:hover{transform:translateY(-4px);border-color:rgba(35,215,255,.34)}
.news-inner{display:block;position:relative;padding:20px 22px 18px 24px}
.news-line{
  position:absolute;left:0;top:18px;bottom:18px;width:2px;border-radius:2px;
  background:linear-gradient(180deg,var(--primary),rgba(35,215,255,.15));
  box-shadow:0 0 12px rgba(35,215,255,.75);
}
.news-title{
  font-size:17px;line-height:1.45;color:var(--t1);
  display:-webkit-box;-webkit-line-clamp:2;-webkit-box-orient:vertical;overflow:hidden;
  transition:color .2s ease-out;
}
.news-card:hover .news-title{color:var(--primary)}
.news-sum{
  margin-top:9px;font-size:14px;line-height:1.7;color:var(--t2);
  display:-webkit-box;-webkit-line-clamp:2;-webkit-box-orient:vertical;overflow:hidden;
}
.news-meta{display:flex;align-items:center;gap:12px;margin-top:15px;font-size:13px;color:var(--t3)}
.news-meta i{margin-left:auto;font-size:12px;color:var(--t3);transition:transform .2s ease-out,color .2s ease-out}
.news-card:hover .news-meta i{transform:translateX(4px);color:var(--primary)}
.news-empty{
  min-height:240px;display:flex;flex-direction:column;align-items:center;justify-content:center;gap:14px;
  border-radius:var(--radius);border:1px dashed rgba(255,255,255,.14);
  background:rgba(255,255,255,.025);text-align:center;padding:34px 20px;
}
.news-empty i{font-size:28px;color:var(--t3)}
.news-empty p{font-size:14.5px;color:var(--t3)}

/* ===== FAQ ===== */
.faq-list{display:flex;flex-direction:column;gap:12px;max-width:900px}
.faq-item{
  border-radius:14px;border:1px solid var(--line);
  background:linear-gradient(160deg,rgba(255,255,255,.06),rgba(255,255,255,.02));
  overflow:hidden;transition:border-color .2s ease-out,box-shadow .2s ease-out;
}
.faq-item.open{border-color:rgba(35,215,255,.36);box-shadow:0 0 0 1px rgba(35,215,255,.14),0 16px 40px -26px rgba(35,215,255,.55)}
.faq-q{
  width:100%;display:flex;align-items:center;gap:14px;text-align:left;
  padding:17px 20px;font-size:16px;font-weight:600;color:var(--t1);
}
.faq-q:hover{color:var(--primary)}
.faq-item.open .faq-q{color:var(--primary)}
.faq-q .q-bar{width:3px;height:18px;border-radius:2px;background:rgba(255,255,255,.16);flex:none;transition:background .2s ease-out,box-shadow .2s ease-out}
.faq-item.open .q-bar{background:var(--primary);box-shadow:0 0 12px rgba(35,215,255,.8)}
.faq-icon{
  margin-left:auto;flex:none;width:26px;height:26px;border-radius:999px;
  display:grid;place-items:center;font-size:12px;color:var(--t2);
  border:1px solid var(--line);background:rgba(255,255,255,.05);
  transition:transform .25s ease-out,color .2s ease-out,border-color .2s ease-out;
}
.faq-item.open .faq-icon{transform:rotate(45deg);color:var(--primary);border-color:rgba(35,215,255,.5)}
.faq-a{max-height:0;overflow:hidden;transition:max-height .3s ease-out,padding .3s ease-out;padding:0 20px 0 43px;font-size:15px;line-height:1.8;color:var(--t2)}
.faq-item.open .faq-a{max-height:340px;padding-top:2px;padding-bottom:18px}

/* ===== CTA ===== */
.cta-banner{
  position:relative;overflow:hidden;border-radius:22px;
  padding:44px 46px;display:flex;align-items:center;gap:32px;
  border:1px solid rgba(35,215,255,.24);
  background:
    linear-gradient(115deg,rgba(35,215,255,.16),rgba(122,92,255,.16) 58%,rgba(10,15,28,.9)),
    var(--panel);
  box-shadow:var(--shadow-card);
}
.cta-banner::before{
  content:"";position:absolute;inset:0;
  background:linear-gradient(105deg,transparent 38%,rgba(255,255,255,.09) 50%,transparent 62%);
  pointer-events:none;
}
.cta-copy{position:relative;z-index:2;max-width:640px}
.cta-copy h2{font-size:30px;line-height:1.3}
.cta-copy p{margin-top:12px;font-size:15px;color:#C3D1E4}
.cta-actions{position:relative;z-index:2;margin-left:auto;display:flex;gap:14px;flex-wrap:wrap}

/* ===== 页脚 ===== */
.site-footer{
  margin-top:96px;
  margin-left:calc(var(--shell-pad-l) * -1);
  margin-right:calc(var(--shell-pad-r) * -1);
  padding:64px calc(var(--shell-pad-r) + 24px) 26px;
  background:linear-gradient(180deg,rgba(7,10,18,.6),rgba(4,6,12,.96));
  border-top:1px solid var(--line);
}
.footer-grid{
  max-width:1320px;margin:0 auto;
  display:grid;grid-template-columns:1.5fr 1fr 1fr 1.2fr;gap:34px;
}
.footer-col h4{font-size:14px;letter-spacing:.06em;color:var(--t1);margin-bottom:16px}
.footer-col p{font-size:13.5px;line-height:1.85;color:var(--t3)}
.footer-brand{display:flex;align-items:center;gap:12px;margin-bottom:16px}
.footer-brand .brand-mark{width:36px;height:36px;border-radius:10px;font-size:14px}
.footer-brand strong{font-size:16px;color:var(--t1)}
.footer-links{display:flex;flex-direction:column;gap:11px}
.footer-links a{font-size:13.5px;color:var(--t3);display:inline-block;width:fit-content;position:relative}
.footer-links a::after{
  content:"";position:absolute;left:0;bottom:-2px;height:1px;width:0;
  background:var(--primary);transition:width .2s ease-out;
}
.footer-links a:hover{color:var(--primary);transform:translateX(2px)}
.footer-links a:hover::after{width:100%}
.footer-bottom{
  max-width:1320px;margin:38px auto 0;padding-top:20px;
  border-top:1px solid rgba(255,255,255,.07);
  display:flex;flex-wrap:wrap;gap:12px;justify-content:space-between;
  font-size:12.5px;color:var(--t3);
}
.footer-bottom span{letter-spacing:.02em}

/* ===== 响应式 ===== */
@media (max-width:1279px){
  .hero h1{font-size:44px}
  .section-head h2{font-size:28px}
  .grid-4{grid-template-columns:repeat(3,1fr)}
  .feature-grid{grid-template-columns:1.4fr 1fr 1fr;grid-template-rows:repeat(2,180px)}
}
@media (min-width:1024px) and (max-width:1279px){
  :root{--sidebar-w:88px}
  .sidebar{padding:22px 12px 18px;overflow:hidden}
  .sidebar:hover{width:240px;box-shadow:24px 0 60px -30px rgba(0,0,0,.9);padding:22px 16px 18px}
  .sidebar .brand-text,
  .sidebar .nav-item span,
  .sidebar .nav-group-label,
  .sidebar .side-foot p,
  .sidebar .side-foot-btn{display:none}
  .sidebar:hover .brand-text,
  .sidebar:hover .nav-item span,
  .sidebar:hover .nav-group-label,
  .sidebar:hover .side-foot p,
  .sidebar:hover .side-foot-btn{display:block}
  .nav-item{justify-content:center;padding:11px 8px}
  .sidebar:hover .nav-item{justify-content:flex-start;padding:11px 12px}
  .nav-item.active::before{left:-12px}
  .sidebar:hover .nav-item.active::before{left:-16px}
  .side-foot{padding:8px;border-color:transparent;background:transparent}
  .sidebar:hover .side-foot{padding:14px;border-color:var(--line);background:linear-gradient(160deg,rgba(35,215,255,.10),rgba(122,92,255,.08))}
}
@media (max-width:1023px){
  :root{--shell-pad-l:20px;--shell-pad-r:20px}
  .topbar{display:flex}
  .sidebar{width:262px;transform:translateX(-100%);box-shadow:30px 0 80px -40px rgba(0,0,0,.95)}
  .sidebar.open{transform:translateX(0)}
  .main-shell{margin-left:0;padding-top:58px}
  .hero{height:auto;min-height:0;padding:64px 0 62px}
  .hero-inner{padding:0 calc(var(--shell-pad-r) + 4px)}
  .hero h1{font-size:38px}
  .hero-sub{font-size:15.5px}
  .section{padding-top:72px}
  .site-footer{margin-top:72px;padding:52px 20px 22px}
  .footer-grid{grid-template-columns:1fr 1fr;gap:28px}
  .grid-4{grid-template-columns:repeat(3,1fr)}
  .feature-grid{grid-template-columns:1fr 1fr;grid-template-rows:auto}
  .reco-card.big{grid-column:1 / -1;grid-row:auto;min-height:260px}
  .reco-card{min-height:170px}
  .news-grid{grid-template-columns:1fr}
  .cta-banner{flex-direction:column;align-items:flex-start;padding:34px 28px;gap:22px}
  .cta-actions{margin-left:0}
  .rail-prev{left:-6px}
  .rail-next{right:-6px}
}
@media (max-width:767px){
  .hero h1{font-size:32px}
  .hero-badge{font-size:11.5px}
  .hero-actions{width:100%}
  .hero-actions .btn{flex:1 1 auto}
  .hero-stats{gap:16px 0}
  .hero-stats li{padding:0 16px}
  .hero-stats strong{font-size:17px}
  .section-head{flex-direction:column;align-items:flex-start;gap:10px}
  .section-head h2{font-size:24px}
  .grid-4{grid-template-columns:repeat(2,1fr);gap:16px}
  .feature-grid{grid-template-columns:1fr;gap:16px}
  .reco-card{min-height:180px}
  .rail-card.portrait{width:158px;height:236px}
  .rail-card.landscape{width:280px;height:236px}
  .rail-track{gap:16px}
  .rail-btn{display:none}
  .cta-copy h2{font-size:23px}
  .faq-q{font-size:15px;padding:15px 16px}
  .faq-a{padding-left:35px;padding-right:16px}
  .footer-grid{grid-template-columns:1fr;gap:26px}
  .news-inner{padding:16px 18px 15px 20px}
  .btn{height:40px;font-size:14px;padding:0 18px}
}
@media (max-width:519px){
  .hero h1{font-size:29px;line-height:1.2}
  .hero-stats li{padding:0 12px}
  .hero-stats li:nth-child(3){border-left:none;padding-left:0}
  .grid-4{grid-template-columns:repeat(2,1fr);gap:14px}
  .poster .body{padding:11px 12px 13px}
  .poster .body h4{font-size:13.5px}
  .news-title{font-size:15.5px}
}

/* roulang page: article */
:root{
  --bg-0:#05070E;
  --bg-1:#0A0F1C;
  --panel:#0E1526;
  --primary:#23D7FF;
  --primary-2:#0FA8D8;
  --accent:#7A5CFF;
  --warm:#FFB94A;
  --t1:#EAF2FF;
  --t2:#A9B7CF;
  --t3:#6C7A93;
  --line:rgba(255,255,255,.10);
  --glass:rgba(255,255,255,.055);
  --radius-card:18px;
  --radius-btn:12px;
  --shadow-card:0 18px 50px -22px rgba(0,0,0,.85), inset 0 1px 0 rgba(255,255,255,.06);
  --glow:0 0 0 1px rgba(35,215,255,.45), 0 8px 32px -8px rgba(35,215,255,.5);
}
*,*::before,*::after{box-sizing:border-box;}
html,body{margin:0;padding:0;}
html{scroll-behavior:smooth;}
body{
  background-color:var(--bg-0);
  color:var(--t1);
  font-family:"PingFang SC","HarmonyOS Sans SC","MiSans","Microsoft YaHei",system-ui,sans-serif;
  font-size:16px;
  line-height:1.75;
  -webkit-font-smoothing:antialiased;
  background-image:
    radial-gradient(900px 520px at 8% -8%, rgba(35,215,255,.16), transparent 70%),
    radial-gradient(820px 520px at 94% 2%, rgba(122,92,255,.14), transparent 72%),
    linear-gradient(rgba(255,255,255,.02) 1px, transparent 1px),
    linear-gradient(90deg, rgba(255,255,255,.02) 1px, transparent 1px);
  background-size:auto,auto,24px 24px,24px 24px;
  background-attachment:fixed;
  min-height:100vh;
}
img{max-width:100%;display:block;}
a{color:inherit;}
h1,h2,h3,h4,p,ul,ol,figure{margin:0;}
button{font-family:inherit;}
::selection{background:rgba(35,215,255,.3);color:#fff;}
::-webkit-scrollbar{width:10px;height:10px;}
::-webkit-scrollbar-track{background:var(--bg-0);}
::-webkit-scrollbar-thumb{background:rgba(35,215,255,.22);border-radius:99px;border:2px solid var(--bg-0);}
::-webkit-scrollbar-thumb:hover{background:rgba(35,215,255,.42);}

/* ============ 侧边导航 ============ */
.sidebar{
  position:fixed;top:0;left:0;bottom:0;width:240px;
  display:flex;flex-direction:column;gap:6px;
  padding:22px 16px 20px;
  background:rgba(8,12,22,.88);
  -webkit-backdrop-filter:blur(18px);
  backdrop-filter:blur(18px);
  border-right:1px solid var(--line);
  z-index:80;
  overflow-y:auto;
}
.brand{
  display:flex;align-items:center;gap:10px;
  padding:6px 8px 18px;text-decoration:none;color:var(--t1);
  font-weight:700;font-size:15px;line-height:1.2;
}
.brand-mark{
  flex:0 0 auto;width:38px;height:38px;border-radius:12px;
  display:grid;place-items:center;
  background:linear-gradient(140deg,var(--primary),var(--accent));
  color:#04101A;font-weight:800;font-size:14px;letter-spacing:.02em;
  box-shadow:0 0 0 1px rgba(35,215,255,.4),0 10px 26px -12px rgba(35,215,255,.8);
}
.brand-text{white-space:nowrap;overflow:hidden;text-overflow:ellipsis;}
.side-nav{display:flex;flex-direction:column;gap:6px;}
.nav-group-label{
  font-size:11px;letter-spacing:.08em;color:var(--t3);
  margin:16px 8px 4px;text-transform:none;
}
.nav-group-label:first-child{margin-top:0;}
.nav-item{
  position:relative;display:flex;align-items:center;gap:12px;
  padding:11px 12px;border-radius:12px;
  color:var(--t2);font-size:15px;text-decoration:none;
  transition:background .2s ease-out,color .2s ease-out;
}
.nav-item i{width:20px;text-align:center;font-size:16px;flex:0 0 auto;}
.nav-item span{white-space:nowrap;}
.nav-item:hover{background:rgba(255,255,255,.05);color:var(--t1);}
.nav-item.active{background:rgba(35,215,255,.12);color:var(--t1);}
.nav-item.active::before{
  content:"";position:absolute;left:0;top:10px;bottom:10px;width:3px;
  border-radius:3px;background:var(--primary);
  box-shadow:0 0 12px rgba(35,215,255,.85);
}
.nav-item:focus-visible{outline:2px solid rgba(35,215,255,.6);outline-offset:2px;}
.side-card{
  margin-top:auto;
  border-radius:14px;padding:14px;
  background:linear-gradient(150deg,rgba(35,215,255,.12),rgba(122,92,255,.10));
  border:1px solid var(--line);
}
.side-card-title{font-size:13px;font-weight:700;color:var(--t1);margin-bottom:6px;}
.side-card-text{font-size:12px;line-height:1.7;color:var(--t2);margin-bottom:10px;}
.side-card-btn{
  display:flex;align-items:center;justify-content:center;
  height:34px;border-radius:10px;text-decoration:none;
  background:var(--primary);color:#04101A;font-size:13px;font-weight:700;
  transition:filter .2s ease-out,box-shadow .2s ease-out;
}
.side-card-btn:hover{filter:brightness(1.08);box-shadow:var(--glow);}

/* ============ 移动端顶栏与抽屉 ============ */
.mobile-topbar{
  display:none;position:fixed;top:0;left:0;right:0;height:64px;
  align-items:center;gap:12px;padding:0 16px;
  background:rgba(6,10,18,.92);
  -webkit-backdrop-filter:blur(16px);
  backdrop-filter:blur(16px);
  border-bottom:1px solid var(--line);
  z-index:90;
}
.menu-btn{
  width:40px;height:40px;flex:0 0 auto;border-radius:10px;
  border:1px solid var(--line);background:rgba(255,255,255,.05);
  color:var(--t1);font-size:16px;cursor:pointer;
  display:grid;place-items:center;transition:all .2s ease-out;
}
.menu-btn:hover{border-color:var(--primary);color:var(--primary);}
.mobile-topbar .brand{padding:0;flex:1;min-width:0;font-size:14px;}
.mobile-topbar .brand-mark{width:32px;height:32px;border-radius:9px;font-size:12px;}
.topbar-cta{
  flex:0 0 auto;display:inline-flex;align-items:center;justify-content:center;
  height:36px;padding:0 14px;border-radius:10px;text-decoration:none;
  background:var(--primary);color:#04101A;font-size:13px;font-weight:700;
}
.drawer-mask{
  position:fixed;inset:0;z-index:75;
  background:rgba(3,6,12,.72);
  -webkit-backdrop-filter:blur(2px);
  backdrop-filter:blur(2px);
  opacity:0;pointer-events:none;transition:opacity .28s ease-out;
}
.drawer-mask.show{opacity:1;pointer-events:auto;}

/* ============ 主体容器 ============ */
.content-wrap{
  margin-left:240px;min-height:100vh;
  display:flex;flex-direction:column;
}
.main{
  flex:1 1 auto;width:100%;max-width:1320px;
  padding:40px 40px 72px;
}
.page-width{max-width:1160px;}

/* ============ 面包屑 ============ */
.breadcrumb{
  display:flex;flex-wrap:wrap;align-items:center;gap:8px;
  font-size:13px;letter-spacing:.02em;color:var(--t3);margin-bottom:24px;
}
.breadcrumb a{color:var(--t3);text-decoration:none;transition:color .2s ease-out;}
.breadcrumb a:hover{color:var(--primary);}
.breadcrumb i{font-size:10px;opacity:.6;}
.breadcrumb .current{color:var(--t2);max-width:520px;overflow:hidden;text-overflow:ellipsis;white-space:nowrap;}

/* ============ 徽章 ============ */
.badge{
  display:inline-flex;align-items:center;gap:8px;
  padding:6px 13px;border-radius:999px;
  font-size:12px;letter-spacing:.02em;
  background:rgba(35,215,255,.10);
  border:1px solid rgba(35,215,255,.22);
  color:#8DE9FF;
}
.badge-accent{
  background:rgba(122,92,255,.12);
  border-color:rgba(122,92,255,.26);
  color:#BDB0FF;
}

/* ============ 文章头 ============ */
.article{max-width:1080px;}
.article-title{
  font-size:52px;line-height:1.14;font-weight:700;
  letter-spacing:-.01em;color:var(--t1);
  margin:16px 0 18px;word-break:break-word;
}
.article-meta{
  display:flex;flex-wrap:wrap;align-items:center;gap:12px;
  font-size:13px;letter-spacing:.02em;color:var(--t3);margin-bottom:26px;
}
.article-meta span{display:inline-flex;align-items:center;gap:6px;}
.article-meta .dot{width:3px;height:3px;border-radius:50%;background:var(--t3);display:inline-block;padding:0;gap:0;}
.article-cover{
  position:relative;width:100%;aspect-ratio:16/9;
  border-radius:var(--radius-card);overflow:hidden;
  border:1px solid var(--line);
  box-shadow:var(--shadow-card);
  margin-bottom:40px;
}
.article-cover img{width:100%;height:100%;object-fit:cover;}
.article-cover::after{
  content:"";position:absolute;inset:0;
  background:linear-gradient(180deg,rgba(5,7,14,.05),rgba(5,7,14,.45));
  pointer-events:none;
}

/* ============ 正文排版区 ============ */
.article-body{
  max-width:760px;
  font-size:17px;line-height:1.85;color:var(--t2);
  word-break:break-word;
}
.article-body > *:first-child{margin-top:0;}
.article-body p{margin:0 0 1.4em;}
.article-body h2{
  position:relative;
  font-size:32px;line-height:1.35;font-weight:700;color:var(--t1);
  margin:2em 0 .8em;padding-left:18px;
}
.article-body h2::before{
  content:"";position:absolute;left:0;top:.16em;bottom:.16em;width:4px;
  border-radius:4px;background:linear-gradient(180deg,var(--primary),var(--accent));
  box-shadow:0 0 14px rgba(35,215,255,.6);
}
.article-body h3{
  font-size:20px;line-height:1.5;font-weight:700;color:var(--t1);
  margin:1.6em 0 .6em;
}
.article-body h4{font-size:17px;font-weight:700;color:var(--t1);margin:1.4em 0 .5em;}
.article-body a{
  color:var(--primary);text-decoration:none;
  border-bottom:1px dashed rgba(35,215,255,.5);
  transition:color .2s ease-out,border-color .2s ease-out;
}
.article-body a:hover{color:#8DE9FF;border-bottom-color:#8DE9FF;}
.article-body strong{color:var(--t1);font-weight:700;}
.article-body ul,.article-body ol{margin:0 0 1.5em;padding-left:1.5em;}
.article-body li{margin:.5em 0;}
.article-body ul{list-style:none;padding-left:1.3em;}
.article-body ul > li{position:relative;}
.article-body ul > li::before{
  content:"";position:absolute;left:-1.1em;top:.72em;
  width:6px;height:6px;border-radius:2px;background:var(--primary);
  box-shadow:0 0 8px rgba(35,215,255,.7);
}
.article-body ol{list-style:decimal;color:var(--t2);}
.article-body ol > li::marker{color:var(--primary);font-weight:700;}
.article-body blockquote{
  margin:1.7em 0;padding:16px 20px;
  border-left:3px solid var(--primary);
  border-radius:0 12px 12px 0;
  background:rgba(35,215,255,.07);
  color:var(--t1);
}
.article-body blockquote p:last-child{margin-bottom:0;}
.article-body img{
  width:100%;height:auto;border-radius:14px;
  border:1px solid var(--line);margin:1.5em 0;
}
.article-body figure{margin:1.5em 0;}
.article-body figcaption{font-size:13px;color:var(--t3);margin-top:10px;text-align:center;}
.article-body table{
  width:100%;border-collapse:collapse;margin:1.6em 0;
  background:var(--panel);border:1px solid var(--line);
  border-radius:12px;overflow:hidden;font-size:15px;
}
.article-body th,.article-body td{padding:12px 14px;border-bottom:1px solid var(--line);text-align:left;}
.article-body th{color:var(--t1);background:rgba(255,255,255,.04);font-weight:600;font-size:14px;}
.article-body tr:last-child td{border-bottom:none;}
.article-body code{
  background:#0B1220;color:#8DE9FF;
  padding:2px 6px;border-radius:6px;font-size:14px;
}
.article-body pre{
  background:#0B1220;border:1px solid var(--line);
  border-radius:14px;padding:16px 18px;overflow-x:auto;
  margin:1.6em 0;font-size:14px;line-height:1.7;
}
.article-body pre code{background:none;padding:0;color:var(--t2);}
.article-body hr{border:none;border-top:1px solid var(--line);margin:2.4em 0;}

/* ============ 空状态 ============ */
.empty-state{
  display:flex;flex-direction:column;align-items:center;justify-content:center;
  gap:14px;text-align:center;
  min-height:260px;padding:40px 24px;
  border-radius:var(--radius-card);
  background:var(--glass);border:1px dashed var(--line);
}
.empty-state i{font-size:30px;color:var(--t3);}
.empty-state h3{font-size:18px;color:var(--t1);font-weight:700;}
.empty-state p{font-size:14px;color:var(--t3);margin:0;}

/* ============ 按钮 ============ */
.btn{
  display:inline-flex;align-items:center;justify-content:center;gap:8px;
  height:44px;padding:0 22px;border-radius:var(--radius-btn);
  font-size:15px;font-weight:600;text-decoration:none;
  border:1px solid transparent;cursor:pointer;
  transition:all .2s ease-out;
}
.btn-primary{
  background:linear-gradient(120deg,var(--primary),var(--primary-2));
  color:#04101A;
  box-shadow:0 0 0 1px rgba(35,215,255,.45),0 8px 32px -8px rgba(35,215,255,.5);
}
.btn-primary:hover{
  filter:brightness(1.08);
  transform:translateY(-1px);
  box-shadow:0 0 0 1px rgba(35,215,255,.7),0 12px 40px -6px rgba(35,215,255,.65);
}
.btn-ghost{
  background:rgba(255,255,255,.04);
  border-color:var(--line);color:var(--t1);
}
.btn-ghost:hover{border-color:var(--primary);color:var(--primary);transform:translateY(-1px);}
.btn:active{transform:translateY(1px);}
.btn:focus-visible{outline:2px solid rgba(35,215,255,.6);outline-offset:3px;}

/* ============ 板块标题 ============ */
.section{margin-top:72px;}
.section-head{
  display:flex;align-items:flex-end;justify-content:space-between;
  gap:16px;margin-bottom:24px;flex-wrap:wrap;
}
.section-title{
  position:relative;padding-left:14px;
  font-size:24px;line-height:1.3;font-weight:700;color:var(--t1);
}
.section-title::before{
  content:"";position:absolute;left:0;top:.2em;bottom:.2em;width:3px;
  border-radius:3px;background:var(--primary);
  box-shadow:0 0 12px rgba(35,215,255,.75);
}
.section-sub{font-size:14px;color:var(--t3);margin-top:6px;padding-left:14px;}
.section-link{
  font-size:14px;color:var(--t2);text-decoration:none;
  display:inline-flex;align-items:center;gap:6px;
  transition:color .2s ease-out;
}
.section-link:hover{color:var(--primary);}

/* ============ 相关推荐卡 ============ */
.related-grid{
  display:grid;grid-template-columns:repeat(3,minmax(0,1fr));gap:20px;
}
.media-card{
  display:block;text-decoration:none;
  background:var(--glass);
  border:1px solid var(--line);
  border-radius:var(--radius-card);
  overflow:hidden;
  box-shadow:var(--shadow-card);
  transition:transform .2s ease-out,border-color .2s ease-out,box-shadow .2s ease-out;
}
.media-card:hover{
  transform:translateY(-4px);
  border-color:rgba(35,215,255,.35);
  box-shadow:0 22px 54px -24px rgba(0,0,0,.9),0 0 0 1px rgba(35,215,255,.22);
}
.media-card:focus-visible{outline:2px solid rgba(35,215,255,.6);outline-offset:3px;}
.media-card .thumb{position:relative;aspect-ratio:2/3;overflow:hidden;background:#0B1220;}
.media-card .thumb img{
  width:100%;height:100%;object-fit:cover;
  transition:transform .38s ease-out;
}
.media-card:hover .thumb img{transform:scale(1.04);}
.media-card .thumb::after{
  content:"";position:absolute;inset:0;
  background:linear-gradient(180deg,rgba(5,7,14,0) 45%,rgba(5,7,14,.85));
}
.media-card .card-body{padding:16px;}
.media-card .card-title{
  font-size:15px;line-height:1.5;font-weight:600;color:var(--t1);
  display:-webkit-box;-webkit-line-clamp:2;-webkit-box-orient:vertical;overflow:hidden;
  transition:color .2s ease-out;
}
.media-card:hover .card-title{color:var(--primary);}
.media-card .card-meta{
  margin-top:8px;font-size:12px;color:var(--t3);letter-spacing:.02em;
  display:flex;align-items:center;gap:8px;
}

/* ============ 文末上下篇 ============ */
.post-nav{display:grid;grid-template-columns:1fr 1fr;gap:20px;}
.post-nav a{
  display:block;text-decoration:none;
  padding:20px 22px;border-radius:var(--radius-card);
  background:var(--glass);border:1px solid var(--line);
  box-shadow:var(--shadow-card);
  transition:transform .2s ease-out,border-color .2s ease-out;
}
.post-nav a:hover{transform:translateY(-3px);border-color:rgba(35,215,255,.35);}
.post-nav a:focus-visible{outline:2px solid rgba(35,215,255,.6);outline-offset:3px;}
.post-nav .direction{
  font-size:12px;color:var(--t3);letter-spacing:.06em;
  display:inline-flex;align-items:center;gap:6px;margin-bottom:8px;
}
.post-nav .nav-title{
  font-size:16px;font-weight:600;color:var(--t1);line-height:1.5;
  display:-webkit-box;-webkit-line-clamp:1;-webkit-box-orient:vertical;overflow:hidden;
  transition:color .2s ease-out;
}
.post-nav a:hover .nav-title{color:var(--primary);}
.post-nav .next{text-align:right;}
.post-nav .next .direction{justify-content:flex-end;}

/* ============ CTA 横幅 ============ */
.cta-banner{
  position:relative;overflow:hidden;
  display:flex;align-items:center;justify-content:space-between;gap:28px;
  padding:40px;border-radius:22px;
  background:linear-gradient(120deg,rgba(35,215,255,.14),rgba(122,92,255,.12)),var(--bg-1);
  border:1px solid var(--line);
  box-shadow:var(--shadow-card);
}
.cta-banner::after{
  content:"";position:absolute;top:-60%;left:-10%;width:60%;height:220%;
  background:linear-gradient(100deg,transparent,rgba(255,255,255,.10),transparent);
  transform:rotate(12deg);pointer-events:none;
}
.cta-banner h2{font-size:26px;line-height:1.35;font-weight:700;color:var(--t1);position:relative;z-index:1;}
.cta-banner p{font-size:14.5px;color:var(--t2);margin-top:8px;max-width:560px;position:relative;z-index:1;}
.cta-banner .cta-actions{display:flex;gap:12px;flex-wrap:wrap;position:relative;z-index:1;}

/* ============ FAQ ============ */
.faq-list{display:flex;flex-direction:column;gap:12px;max-width:860px;}
.faq-item{
  border-radius:14px;
  background:var(--glass);
  border:1px solid var(--line);
  overflow:hidden;
  transition:border-color .2s ease-out;
}
.faq-item:hover{border-color:rgba(35,215,255,.28);}
.faq-q{
  width:100%;display:flex;align-items:center;justify-content:space-between;gap:16px;
  padding:16px 18px;background:none;border:none;cursor:pointer;
  font-size:16px;font-weight:600;color:var(--t1);text-align:left;
  transition:color .2s ease-out;
}
.faq-q:hover{color:var(--primary);}
.faq-q:focus-visible{outline:2px solid rgba(35,215,255,.6);outline-offset:-4px;}
.faq-q .icon{
  flex:0 0 auto;width:26px;height:26px;border-radius:50%;
  display:grid;place-items:center;
  border:1px solid var(--line);background:rgba(255,255,255,.04);
  color:var(--t2);font-size:12px;
  transition:transform .25s ease-out,color .2s ease-out,border-color .2s ease-out;
}
.faq-item.open .faq-q{color:var(--primary);}
.faq-item.open .faq-q .icon{transform:rotate(45deg);color:var(--primary);border-color:rgba(35,215,255,.45);}
.faq-a{
  max-height:0;overflow:hidden;
  transition:max-height .3s ease-out;
  font-size:15px;line-height:1.8;color:var(--t2);
}
.faq-a .inner{padding:0 18px 18px;border-top:1px solid rgba(255,255,255,.06);padding-top:12px;}
.faq-item.open .faq-a{max-height:320px;}

/* ============ 页脚 ============ */
.site-footer{
  background:#03050B;
  border-top:1px solid var(--line);
  padding:56px 40px 26px;
  margin-top:auto;
}
.footer-grid{
  display:grid;grid-template-columns:1.5fr 1fr 1fr 1.3fr;gap:32px;
  max-width:1240px;padding-bottom:32px;
  border-bottom:1px solid rgba(255,255,255,.06);
}
.footer-col h4{
  font-size:14px;font-weight:700;color:var(--t1);
  margin-bottom:14px;letter-spacing:.02em;
}
.footer-col p{font-size:13.5px;line-height:1.85;color:var(--t3);}
.footer-brand{display:flex;align-items:center;gap:10px;margin-bottom:12px;}
.footer-brand .brand-mark{width:34px;height:34px;border-radius:10px;font-size:12px;}
.footer-brand strong{font-size:15px;color:var(--t1);}
.footer-links{display:flex;flex-direction:column;gap:10px;}
.footer-links a{
  position:relative;width:fit-content;
  font-size:14px;color:var(--t3);text-decoration:none;
  transition:color .2s ease-out;
}
.footer-links a::after{
  content:"";position:absolute;left:0;bottom:-2px;height:1px;width:0;
  background:var(--primary);transition:width .2s ease-out;
}
.footer-links a:hover{color:var(--primary);}
.footer-links a:hover::after{width:100%;}
.footer-bottom{
  display:flex;flex-wrap:wrap;justify-content:space-between;gap:12px;
  max-width:1240px;padding-top:20px;
  font-size:13px;color:var(--t3);
}

/* ============ 响应式 ============ */
@media (min-width:1024px) and (max-width:1279px){
  .sidebar{width:88px;padding:20px 12px;align-items:center;}
  .brand{padding:4px 0 18px;justify-content:center;}
  .brand-text{display:none;}
  .nav-group-label{display:none;}
  .side-nav{width:100%;align-items:center;}
  .nav-item{justify-content:center;padding:12px;width:100%;}
  .nav-item span{display:none;}
  .nav-item:hover span{
    display:block;position:absolute;left:calc(100% + 12px);top:50%;
    transform:translateY(-50%);
    padding:6px 12px;border-radius:8px;white-space:nowrap;
    background:var(--panel);border:1px solid var(--line);
    color:var(--t1);font-size:13px;z-index:10;
    box-shadow:0 12px 30px -14px rgba(0,0,0,.9);
  }
  .side-card{display:none;}
  .content-wrap{margin-left:88px;}
}

@media (max-width:1023px){
  .mobile-topbar{display:flex;}
  .sidebar{
    width:280px;
    transform:translateX(-100%);
    transition:transform .28s ease-out;
    z-index:80;
  }
  .sidebar.open{transform:translateX(0);}
  .content-wrap{margin-left:0;padding-top:64px;}
  .main{padding:28px 20px 56px;}
  .site-footer{padding:44px 20px 22px;}
  .article-title{font-size:34px;}
  .article-body h2{font-size:26px;}
  .related-grid{grid-template-columns:repeat(2,minmax(0,1fr));}
  .post-nav{grid-template-columns:1fr;}
  .post-nav .next{text-align:left;}
  .post-nav .next .direction{justify-content:flex-start;}
  .cta-banner{flex-direction:column;align-items:flex-start;padding:28px;}
  .section{margin-top:56px;}
}

@media (max-width:767px){
  .footer-grid{grid-template-columns:1fr 1fr;gap:26px;}
  .article-title{font-size:30px;}
  .article-cover{aspect-ratio:4/3;margin-bottom:28px;}
  .article-body{font-size:16px;line-height:1.8;}
  .breadcrumb .current{max-width:100%;white-space:normal;}
  .related-grid{grid-template-columns:1fr;}
  .cta-banner h2{font-size:21px;}
}

@media (max-width:519px){
  .main{padding:22px 16px 48px;}
  .article-title{font-size:26px;}
  .footer-grid{grid-template-columns:1fr;}
  .cta-banner .cta-actions{width:100%;}
  .cta-banner .btn{flex:1;}
  .section-title{font-size:20px;}
}

/* roulang page: category1 */
:root{
  --bg-0:#05070E;
  --bg-1:#0A0F1C;
  --panel:#0E1526;
  --primary:#23D7FF;
  --primary-2:#0FA8D8;
  --accent:#7A5CFF;
  --warm:#FFB94A;
  --t1:#EAF2FF;
  --t2:#A9B7CF;
  --t3:#6C7A93;
  --line:rgba(255,255,255,.10);
  --glass:rgba(255,255,255,.055);
  --r-card:18px;
  --r-btn:12px;
  --shadow-card:0 18px 50px -22px rgba(0,0,0,.85);
  --glow:0 0 0 1px rgba(35,215,255,.45),0 8px 32px -8px rgba(35,215,255,.5);
  --space-block:96px;
}
*,*::before,*::after{box-sizing:border-box;}
html{scroll-behavior:smooth;}
body{
  margin:0;
  min-height:100vh;
  background:var(--bg-0);
  color:var(--t2);
  font-family:"PingFang SC","HarmonyOS Sans SC","MiSans","Microsoft YaHei",system-ui,-apple-system,sans-serif;
  font-size:16px;
  line-height:1.75;
  -webkit-font-smoothing:antialiased;
  font-feature-settings:"tnum" 1;
  overflow-x:hidden;
}
body::before{
  content:"";
  position:fixed;
  inset:0;
  z-index:-1;
  pointer-events:none;
  background-image:
    radial-gradient(920px 540px at 16% -8%, rgba(35,215,255,.16), transparent 70%),
    radial-gradient(780px 460px at 86% 2%, rgba(122,92,255,.14), transparent 72%),
    linear-gradient(rgba(255,255,255,.022) 1px, transparent 1px),
    linear-gradient(90deg, rgba(255,255,255,.022) 1px, transparent 1px);
  background-size:auto,auto,24px 24px,24px 24px;
}
h1,h2,h3,h4{margin:0;color:var(--t1);font-weight:700;line-height:1.25;}
p{margin:0;}
a{color:inherit;text-decoration:none;}
img{display:block;max-width:100%;}
button{font-family:inherit;}
ul,ol{margin:0;padding:0;list-style:none;}
::selection{background:rgba(35,215,255,.28);color:#fff;}
::-webkit-scrollbar{width:10px;height:10px;}
::-webkit-scrollbar-track{background:#05070E;}
::-webkit-scrollbar-thumb{background:rgba(35,215,255,.25);border-radius:999px;}
::-webkit-scrollbar-thumb:hover{background:rgba(35,215,255,.45);}

/* ---------- 侧栏导航 ---------- */
.sidebar{
  position:fixed;
  top:0;left:0;
  width:240px;height:100vh;
  display:flex;flex-direction:column;
  padding:26px 16px 20px;
  background:linear-gradient(180deg,rgba(10,15,28,.97),rgba(5,7,14,.99));
  border-right:1px solid var(--line);
  z-index:60;
  overflow-y:auto;
  transition:left .3s ease,width .2s ease;
}
.brand{display:flex;align-items:center;gap:12px;padding:4px 8px 10px;}
.brand-mark{
  width:40px;height:40px;flex:0 0 auto;
  display:grid;place-items:center;
  border-radius:12px;
  background:linear-gradient(140deg,var(--primary),var(--accent));
  color:#04101A;font-size:13px;font-weight:800;letter-spacing:.04em;
  box-shadow:0 10px 26px -12px rgba(35,215,255,.85);
}
.brand-name{font-size:15px;font-weight:700;color:var(--t1);line-height:1.3;letter-spacing:.01em;}
.brand-sub{font-size:11px;color:var(--t3);letter-spacing:.12em;margin-top:2px;}
.nav-group-label{font-size:11px;letter-spacing:.08em;color:var(--t3);margin:20px 8px 8px;}
.nav-item{
  position:relative;
  display:flex;align-items:center;gap:12px;
  padding:11px 12px;
  border-radius:12px;
  color:var(--t2);
  font-size:15px;
  transition:background .2s ease-out,color .2s ease-out;
}
.nav-item i{width:20px;text-align:center;font-size:15px;flex:0 0 auto;}
.nav-item:hover{background:rgba(255,255,255,.055);color:var(--t1);}
.nav-item.active{background:rgba(35,215,255,.12);color:var(--t1);}
.nav-item.active::before{
  content:"";position:absolute;left:0;top:50%;transform:translateY(-50%);
  width:3px;height:22px;border-radius:3px;
  background:var(--primary);
  box-shadow:0 0 14px rgba(35,215,255,.9);
}
.nav-item:focus-visible{outline:none;box-shadow:0 0 0 2px rgba(35,215,255,.6);}
.side-card{
  margin-top:auto;
  padding:16px;
  border-radius:14px;
  border:1px solid var(--line);
  background:var(--glass);
  backdrop-filter:blur(12px);
}
.side-card strong{display:block;font-size:13px;color:var(--t1);margin-bottom:6px;}
.side-card p{font-size:12px;line-height:1.7;color:var(--t3);}

/* ---------- 顶部栏（移动） ---------- */
.topbar{
  display:none;
  position:fixed;top:0;left:0;right:0;
  height:64px;
  align-items:center;justify-content:space-between;
  padding:0 18px;
  background:rgba(6,9,18,.93);
  backdrop-filter:blur(14px);
  border-bottom:1px solid var(--line);
  z-index:70;
}
.topbar-brand{display:flex;align-items:center;gap:10px;color:var(--t1);font-size:15px;font-weight:700;}
.topbar-brand .brand-mark{width:34px;height:34px;font-size:12px;border-radius:10px;}
.menu-btn{
  width:40px;height:40px;display:grid;place-items:center;
  border-radius:10px;border:1px solid var(--line);
  background:rgba(255,255,255,.05);color:var(--t1);
  cursor:pointer;transition:all .2s ease-out;
}
.menu-btn:hover{border-color:rgba(35,215,255,.55);color:var(--primary);}
.menu-btn:focus-visible{outline:none;box-shadow:0 0 0 2px rgba(35,215,255,.6);}
.drawer-mask{
  display:none;
  position:fixed;inset:0;
  background:rgba(3,5,10,.72);
  backdrop-filter:blur(2px);
  z-index:55;
}
.drawer-mask.show{display:block;}

/* ---------- 主内容区 ---------- */
.site-main{
  margin-left:240px;
  padding:0 40px 0 24px;
}
.wrap{max-width:1320px;margin:0 auto;}

/* ---------- Hero ---------- */
.hero{
  position:relative;
  overflow:hidden;
  margin-top:32px;
  padding:56px 48px;
  border-radius:24px;
  border:1px solid var(--line);
  display:grid;
  grid-template-columns:minmax(0,1.4fr) minmax(0,.85fr);
  gap:44px;
  align-items:center;
  background:url('/assets/images/backpic/back-1.png') center/cover no-repeat;
  box-shadow:var(--shadow-card);
}
.hero::before{
  content:"";
  position:absolute;inset:0;
  background:
    radial-gradient(620px 400px at 10% 100%, rgba(35,215,255,.30), transparent 72%),
    linear-gradient(118deg, rgba(5,7,14,.82), rgba(5,7,14,.58) 52%, rgba(5,7,14,.90));
}
.hero::after{
  content:"";
  position:absolute;left:0;right:0;bottom:0;height:110px;
  background:linear-gradient(180deg, rgba(5,7,14,0), var(--bg-0));
  pointer-events:none;
}
.hero > *{position:relative;z-index:2;}
.hero-badge{
  display:inline-flex;align-items:center;gap:8px;
  padding:6px 14px;border-radius:999px;
  font-size:12px;letter-spacing:.02em;
  color:#BFF3FF;
  background:rgba(35,215,255,.10);
  border:1px solid rgba(35,215,255,.28);
}
.hero-badge i{font-size:11px;}
.hero h1{
  margin-top:20px;
  font-size:52px;
  line-height:1.14;
  letter-spacing:-.01em;
}
.hero h1 em{font-style:normal;color:var(--primary);}
.hero-lead{
  margin-top:20px;
  max-width:640px;
  font-size:16px;
  line-height:1.85;
  color:var(--t2);
}
.hero-actions{margin-top:32px;display:flex;flex-wrap:wrap;gap:14px;}
.hero-stats{
  margin-top:32px;
  display:flex;flex-wrap:wrap;align-items:center;
}
.hero-stats span{
  padding:0 18px;
  font-size:13px;
  letter-spacing:.02em;
  color:var(--t2);
  border-left:1px solid rgba(255,255,255,.20);
}
.hero-stats span strong{color:var(--t1);font-weight:700;}
.hero-stats span:first-child{padding-left:0;border-left:0;}
.hero-visual{
  border-radius:18px;
  overflow:hidden;
  border:1px solid rgba(255,255,255,.18);
  box-shadow:0 26px 60px -30px rgba(0,0,0,.95),inset 0 1px 0 rgba(255,255,255,.10);
  aspect-ratio:4/3;
  background:var(--panel);
}
.hero-visual img{width:100%;height:100%;object-fit:cover;}
.hero-visual-caption{
  margin-top:12px;
  font-size:12px;
  color:var(--t3);
  letter-spacing:.02em;
}

/* ---------- 按钮 ---------- */
.btn{
  display:inline-flex;align-items:center;justify-content:center;gap:8px;
  height:44px;padding:0 24px;
  border-radius:var(--r-btn);
  font-size:15px;font-weight:600;
  border:1px solid transparent;
  cursor:pointer;
  transition:all .2s ease-out;
}
.btn-primary{
  background:var(--primary);
  color:#04101A;
  box-shadow:0 10px 30px -14px rgba(35,215,255,.9);
}
.btn-primary:hover{filter:brightness(1.08);box-shadow:var(--glow);}
.btn-primary:active{transform:translateY(1px);}
.btn-ghost{
  background:rgba(255,255,255,.045);
  border-color:var(--line);
  color:var(--t1);
  backdrop-filter:blur(8px);
}
.btn-ghost:hover{border-color:rgba(35,215,255,.6);background:rgba(35,215,255,.08);}
.btn-ghost:active{transform:translateY(1px);}
.btn:focus-visible{outline:none;box-shadow:0 0 0 2px rgba(35,215,255,.7);}

/* ---------- 徽章 / 标签 ---------- */
.badge{
  display:inline-flex;align-items:center;gap:6px;
  padding:5px 12px;
  border-radius:999px;
  font-size:12px;
  color:#9BE8FB;
  background:rgba(35,215,255,.10);
  border:1px solid rgba(35,215,255,.22);
}
.badge.accent{color:#C6BAFF;background:rgba(122,92,255,.12);border-color:rgba(122,92,255,.26);}
.badge.warm{color:#FFD79A;background:rgba(255,185,74,.10);border-color:rgba(255,185,74,.26);}

/* ---------- 板块 ---------- */
.section{margin-top:var(--space-block);}
.section-head{
  display:flex;align-items:flex-end;justify-content:space-between;
  gap:24px;margin-bottom:28px;
}
.section-title{
  position:relative;
  padding-left:16px;
  font-size:32px;
  line-height:1.25;
}
.section-title::before{
  content:"";position:absolute;left:0;top:6px;bottom:6px;width:3px;border-radius:3px;
  background:linear-gradient(180deg,var(--primary),var(--accent));
}
.section-desc{margin-top:10px;padding-left:16px;font-size:14px;color:var(--t3);}
.section-more{
  font-size:14px;color:var(--t2);white-space:nowrap;
  transition:color .2s ease-out,transform .2s ease-out;
}
.section-more:hover{color:var(--primary);transform:translateX(3px);}
.section-more:focus-visible{outline:none;box-shadow:0 0 0 2px rgba(35,215,255,.6);border-radius:6px;}

/* ---------- 筛选 chips ---------- */
.chip-row{display:flex;flex-wrap:wrap;gap:12px;margin-bottom:28px;}
.chip{
  display:inline-flex;align-items:center;gap:8px;
  padding:9px 18px;
  border-radius:999px;
  font-size:14px;
  color:var(--t2);
  background:rgba(255,255,255,.035);
  border:1px solid var(--line);
  cursor:pointer;
  transition:all .2s ease-out;
}
.chip:hover{border-color:rgba(35,215,255,.45);color:var(--t1);}
.chip.is-active{
  color:#BFF3FF;
  border-color:rgba(35,215,255,.70);
  background:rgba(35,215,255,.12);
  box-shadow:inset 0 0 0 1px rgba(35,215,255,.18);
}
.chip:focus-visible{outline:none;box-shadow:0 0 0 2px rgba(35,215,255,.6);}

/* ---------- 通道海报网格 ---------- */
.poster-grid{
  display:grid;
  grid-template-columns:repeat(4,minmax(0,1fr));
  gap:20px;
}
.poster-card{
  position:relative;
  display:block;
  overflow:hidden;
  border-radius:var(--r-card);
  border:1px solid var(--line);
  background:var(--panel);
  box-shadow:var(--shadow-card);
  transition:transform .2s ease-out,border-color .2s ease-out,box-shadow .2s ease-out;
}
.poster-card:hover{
  transform:translateY(-4px);
  border-color:rgba(35,215,255,.35);
  box-shadow:0 26px 60px -26px rgba(35,215,255,.45);
}
.poster-card:focus-visible{outline:none;box-shadow:0 0 0 2px rgba(35,215,255,.7);}
.poster-media{position:relative;aspect-ratio:2/3;overflow:hidden;}
.poster-media img{width:100%;height:100%;object-fit:cover;transition:transform .35s ease-out;}
.poster-card:hover .poster-media img{transform:scale(1.04);}
.poster-media::after{
  content:"";position:absolute;inset:0;
  background:linear-gradient(180deg,rgba(5,7,14,.05) 35%,rgba(5,7,14,.92) 100%);
}
.poster-tag{position:absolute;top:12px;left:12px;z-index:2;}
.poster-body{position:absolute;left:0;right:0;bottom:0;padding:16px;z-index:2;}
.poster-title{font-size:16px;font-weight:600;color:var(--t1);line-height:1.4;}
.poster-meta{margin-top:4px;font-size:13px;color:var(--t3);letter-spacing:.02em;}
.poster-card:hover .poster-title{color:var(--primary);}

/* ---------- 流程 ---------- */
.flow{
  display:grid;
  grid-template-columns:repeat(4,minmax(0,1fr));
  gap:20px;
}
.flow-step{
  position:relative;
  padding:26px 22px;
  border-radius:var(--r-card);
  border:1px solid var(--line);
  background:var(--glass);
  backdrop-filter:blur(12px);
  box-shadow:inset 0 1px 0 rgba(255,255,255,.06);
  transition:transform .2s ease-out,border-color .2s ease-out;
}
.flow-step:hover{transform:translateY(-4px);border-color:rgba(35,215,255,.32);}
.flow-num{
  display:inline-grid;place-items:center;
  width:34px;height:34px;border-radius:10px;
  font-size:14px;font-weight:700;color:#04101A;
  background:linear-gradient(140deg,var(--primary),var(--primary-2));
  box-shadow:0 8px 22px -12px rgba(35,215,255,.9);
  margin-bottom:16px;
}
.flow-step h3{font-size:18px;margin-bottom:8px;}
.flow-step p{font-size:14px;line-height:1.75;color:var(--t2);}
.flow-line{
  position:relative;
}
.flow-line::before{
  content:"";position:absolute;top:0;left:0;right:0;height:1px;
  background:linear-gradient(90deg,rgba(35,215,255,.55),rgba(122,92,255,.35),transparent);
}

/* ---------- 对比卡 ---------- */
.compare{display:grid;grid-template-columns:1fr 1fr;gap:20px;}
.compare-card{
  position:relative;
  padding:30px 28px;
  border-radius:var(--r-card);
  border:1px solid var(--line);
  background:var(--panel);
  box-shadow:var(--shadow-card);
  overflow:hidden;
}
.compare-card::after{
  content:"";position:absolute;inset:0;border-radius:inherit;padding:1px;
  background:linear-gradient(120deg,rgba(35,215,255,.45),rgba(35,215,255,0) 46%,rgba(122,92,255,.42));
  -webkit-mask:linear-gradient(#000 0 0) content-box,linear-gradient(#000 0 0);
  -webkit-mask-composite:xor;
  mask-composite:exclude;
  pointer-events:none;opacity:.55;
}
.compare-card.good{background:linear-gradient(160deg,rgba(35,215,255,.09),rgba(14,21,38,.95));}
.compare-card.bad{background:linear-gradient(160deg,rgba(255,185,74,.07),rgba(14,21,38,.95));}
.compare-card h3{font-size:20px;margin-bottom:6px;}
.compare-card .compare-sub{font-size:13px;color:var(--t3);margin-bottom:20px;}
.check-list li{
  position:relative;
  padding-left:22px;
  margin-bottom:14px;
  font-size:15px;
  line-height:1.75;
  color:var(--t2);
}
.check-list li:last-child{margin-bottom:0;}
.check-list li::before{
  content:"";position:absolute;left:0;top:10px;
  width:8px;height:8px;border-radius:2px;
  background:var(--primary);
  box-shadow:0 0 12px rgba(35,215,255,.8);
}
.compare-card.bad .check-list li::before{background:var(--warm);box-shadow:0 0 12px rgba(255,185,74,.7);}

/* ---------- FAQ ---------- */
.faq-list{display:flex;flex-direction:column;gap:12px;}
.faq-item{
  border-radius:14px;
  border:1px solid var(--line);
  background:var(--glass);
  backdrop-filter:blur(10px);
  padding:0 22px;
  transition:border-color .2s ease-out,background .2s ease-out;
}
.faq-item[open]{
  border-color:rgba(35,215,255,.35);
  background:rgba(35,215,255,.06);
}
.faq-item summary{
  list-style:none;
  display:flex;align-items:center;justify-content:space-between;gap:18px;
  padding:18px 0;
  font-size:16px;font-weight:600;color:var(--t1);
  cursor:pointer;
}
.faq-item summary::-webkit-details-marker{display:none;}
.faq-item summary:focus-visible{outline:none;box-shadow:0 0 0 2px rgba(35,215,255,.6);border-radius:8px;}
.faq-icon{
  flex:0 0 auto;
  width:28px;height:28px;display:grid;place-items:center;
  border-radius:999px;
  border:1px solid var(--line);
  color:var(--primary);
  font-size:12px;
  transition:transform .25s ease-out,background .25s ease-out,border-color .25s ease-out;
}
.faq-item[open] .faq-icon{
  transform:rotate(45deg);
  background:rgba(35,215,255,.14);
  border-color:rgba(35,215,255,.5);
}
.faq-item[open] summary{color:var(--primary);}
.faq-body{padding:0 0 18px;font-size:15px;line-height:1.8;color:var(--t2);}

/* ---------- CTA ---------- */
.cta-band{
  position:relative;
  overflow:hidden;
  display:flex;align-items:center;justify-content:space-between;
  gap:32px;
  margin-top:var(--space-block);
  padding:44px 46px;
  border-radius:22px;
  border:1px solid rgba(35,215,255,.22);
  background:linear-gradient(120deg,rgba(35,215,255,.13),rgba(122,92,255,.10)),var(--panel);
  box-shadow:var(--shadow-card);
}
.cta-band::after{
  content:"";position:absolute;inset:0;pointer-events:none;
  background:linear-gradient(105deg,transparent 38%,rgba(255,255,255,.07) 50%,transparent 62%);
}
.cta-band h2{font-size:30px;line-height:1.3;}
.cta-band p{margin-top:12px;font-size:15px;color:var(--t2);max-width:620px;}
.cta-band .btn{position:relative;z-index:2;}

/* ---------- 页脚 ---------- */
.site-footer{
  margin:var(--space-block) -40px 0 -24px;
  padding:56px 40px 24px 24px;
  border-top:1px solid var(--line);
  background:#04060C;
}
.footer-grid{
  display:grid;
  grid-template-columns:1.5fr 1fr 1fr 1.2fr;
  gap:32px;
  max-width:1320px;
  margin:0 auto;
}
.footer-col + .footer-col{border-left:1px solid rgba(255,255,255,.06);padding-left:32px;}
.footer-brand{display:flex;align-items:center;gap:10px;margin-bottom:14px;}
.footer-brand .brand-mark{width:36px;height:36px;font-size:12px;border-radius:10px;}
.footer-brand strong{font-size:15px;color:var(--t1);}
.footer-col p{font-size:13px;line-height:1.85;color:var(--t3);}
.footer-col h4{font-size:14px;margin-bottom:14px;color:var(--t1);}
.footer-links{display:flex;flex-direction:column;gap:10px;}
.footer-links a{
  position:relative;width:fit-content;
  font-size:14px;color:var(--t2);
  transition:color .2s ease-out,transform .2s ease-out;
}
.footer-links a::after{
  content:"";position:absolute;left:0;bottom:-2px;height:1px;width:0;
  background:var(--primary);transition:width .2s ease-out;
}
.footer-links a:hover{color:var(--primary);transform:translateX(3px);}
.footer-links a:hover::after{width:100%;}
.footer-links a:focus-visible{outline:none;box-shadow:0 0 0 2px rgba(35,215,255,.6);border-radius:4px;}
.footer-bottom{
  display:flex;flex-wrap:wrap;align-items:center;justify-content:space-between;gap:14px;
  max-width:1320px;
  margin:40px auto 0;
  padding-top:20px;
  border-top:1px solid rgba(255,255,255,.06);
  font-size:13px;color:var(--t3);
}

/* ---------- 响应式 ---------- */
@media (max-width:1279px){
  .sidebar{width:88px;padding:24px 10px;}
  .brand{justify-content:center;padding:4px 0 12px;}
  .brand-name,.brand-sub,.nav-group-label,.side-card{display:none;}
  .nav-item{justify-content:center;padding:12px 0;}
  .nav-item span{
    display:none;
    position:absolute;left:calc(100% + 14px);top:50%;transform:translateY(-50%);
    padding:6px 12px;border-radius:8px;
    background:var(--panel);border:1px solid var(--line);
    font-size:13px;color:var(--t1);white-space:nowrap;z-index:80;
  }
  .nav-item:hover span{display:block;}
  .site-main{margin-left:88px;padding:0 32px 0 24px;}
  .site-footer{margin-left:-24px;margin-right:-32px;padding-left:24px;padding-right:32px;}
  .poster-grid{grid-template-columns:repeat(3,minmax(0,1fr));}
  .hero{padding:48px 36px;gap:32px;}
  .hero h1{font-size:44px;}
  .flow{grid-template-columns:repeat(2,minmax(0,1fr));}
}

@media (max-width:1023px){
  .topbar{display:flex;}
  .sidebar{
    width:272px;
    left:-300px;
    padding:26px 18px 20px;
    box-shadow:0 0 60px rgba(0,0,0,.75);
  }
  .sidebar.open{left:0;}
  .brand{justify-content:flex-start;padding:4px 8px 10px;}
  .brand-name,.brand-sub,.nav-group-label,.side-card{display:block;}
  .side-card{display:block;margin-top:24px;}
  .nav-item{justify-content:flex-start;padding:11px 12px;}
  .nav-item span{
    display:inline;position:static;transform:none;
    background:none;border:0;padding:0;font-size:15px;color:inherit;
  }
  .site-main{margin-left:0;padding:84px 20px 0;}
  .site-footer{margin:72px -20px 0;padding:48px 20px 20px;}
  .hero{
    grid-template-columns:1fr;
    padding:40px 26px;
    margin-top:20px;
    border-radius:20px;
  }
  .hero h1{font-size:36px;}
  .hero::after{height:80px;}
  .hero-visual{max-width:460px;}
  .section{margin-top:72px;}
  .section-title{font-size:26px;}
  .cta-band{flex-direction:column;align-items:flex-start;padding:34px 26px;margin-top:72px;}
  .cta-band h2{font-size:24px;}
  .footer-grid{grid-template-columns:1fr 1fr;gap:28px;}
  .footer-col + .footer-col{border-left:0;padding-left:0;}
}

@media (max-width:767px){
  .poster-grid{grid-template-columns:repeat(2,minmax(0,1fr));gap:16px;}
  .hero h1{font-size:32px;}
  .hero-lead{font-size:15px;}
  .hero-stats span{padding:0 12px;font-size:12px;}
  .flow{grid-template-columns:1fr;}
  .compare{grid-template-columns:1fr;}
  .section-head{flex-direction:column;align-items:flex-start;gap:12px;}
  .section{margin-top:56px;}
  .section-title{font-size:23px;}
  .faq-item{padding:0 18px;}
  .faq-item summary{font-size:15px;padding:16px 0;}
  .footer-grid{grid-template-columns:1fr;}
  .footer-bottom{flex-direction:column;align-items:flex-start;}
}

@media (max-width:519px){
  .site-main{padding:80px 16px 0;}
  .site-footer{margin:56px -16px 0;padding:40px 16px 18px;}
  .hero{padding:32px 20px;}
  .hero h1{font-size:28px;}
  .hero-actions .btn{width:100%;}
  .hero-stats{flex-direction:column;align-items:flex-start;gap:8px;}
  .hero-stats span{padding-left:0;border-left:0;}
  .poster-grid{grid-template-columns:1fr 1fr;gap:12px;}
  .poster-title{font-size:14px;}
  .poster-meta{font-size:12px;}
  .compare-card{padding:24px 20px;}
  .cta-band{padding:28px 20px;}
}

/* roulang page: category2 */
:root{
    --bg-0:#05070E;
    --bg-1:#0A0F1C;
    --panel:#0E1526;
    --primary:#23D7FF;
    --primary-2:#0FA8D8;
    --accent:#7A5CFF;
    --warm:#FFB94A;
    --t1:#EAF2FF;
    --t2:#A9B7CF;
    --t3:#6C7A93;
    --line:rgba(255,255,255,.10);
    --glass:rgba(255,255,255,.055);
    --r-card:18px;
    --r-btn:12px;
    --shadow-card:0 18px 50px -22px rgba(0,0,0,.85), inset 0 1px 0 rgba(255,255,255,.06);
    --glow:0 0 0 1px rgba(35,215,255,.45), 0 8px 32px -8px rgba(35,215,255,.5);
    --sidebar-w:240px;
    --sidebar-w-narrow:88px;
  }

  *,*::before,*::after{box-sizing:border-box;}
  html{-webkit-text-size-adjust:100%;scroll-behavior:smooth;}
  body{
    margin:0;
    padding-left:var(--sidebar-w);
    background:var(--bg-0);
    color:var(--t2);
    font-family:"PingFang SC","HarmonyOS Sans SC","MiSans","Microsoft YaHei",system-ui,-apple-system,sans-serif;
    font-size:16px;
    line-height:1.75;
    -webkit-font-smoothing:antialiased;
    font-feature-settings:"tnum" 1;
  }
  body::before{
    content:"";
    position:fixed;
    inset:0;
    z-index:0;
    pointer-events:none;
    background-image:
      linear-gradient(rgba(255,255,255,.022) 1px, transparent 1px),
      linear-gradient(90deg, rgba(255,255,255,.022) 1px, transparent 1px);
    background-size:24px 24px;
  }
  body::after{
    content:"";
    position:fixed;
    inset:0;
    z-index:0;
    pointer-events:none;
    background:
      radial-gradient(620px 420px at 10% -6%, rgba(35,215,255,.16), transparent 70%),
      radial-gradient(720px 520px at 94% 6%, rgba(122,92,255,.13), transparent 72%);
  }
  h1,h2,h3,h4,p,ul,ol,figure{margin:0;}
  ul,ol{padding:0;list-style:none;}
  img{display:block;max-width:100%;height:auto;}
  a{color:inherit;text-decoration:none;}
  button{font:inherit;color:inherit;background:none;border:0;cursor:pointer;}
  :focus-visible{outline:2px solid rgba(35,215,255,.65);outline-offset:3px;border-radius:6px;}
  ::-webkit-scrollbar{width:10px;height:10px;}
  ::-webkit-scrollbar-track{background:#05070E;}
  ::-webkit-scrollbar-thumb{background:rgba(255,255,255,.14);border-radius:999px;}
  ::-webkit-scrollbar-thumb:hover{background:rgba(35,215,255,.42);}

  h1,h2,h3,h4{color:var(--t1);font-weight:700;letter-spacing:-.01em;}

  /* ============ 侧栏导航 ============ */
  .sidebar{
    position:fixed;
    top:0;left:0;bottom:0;
    width:var(--sidebar-w);
    z-index:80;
    display:flex;
    flex-direction:column;
    gap:10px;
    padding:24px 16px 20px;
    background:linear-gradient(180deg, rgba(14,21,38,.97), rgba(5,7,14,.98));
    border-right:1px solid var(--line);
    backdrop-filter:blur(16px);
    -webkit-backdrop-filter:blur(16px);
    transition:width .22s ease-out, transform .26s ease-out;
    overflow-y:auto;
  }
  .brand{
    display:flex;
    align-items:center;
    gap:12px;
    padding:6px 8px 18px;
    border-bottom:1px solid var(--line);
    margin-bottom:6px;
  }
  .brand-mark{
    flex:0 0 auto;
    width:40px;height:40px;
    display:grid;place-items:center;
    border-radius:12px;
    background:linear-gradient(140deg, rgba(35,215,255,.9), rgba(122,92,255,.85));
    color:#04101A;
    font-weight:800;
    font-size:15px;
    letter-spacing:.02em;
    box-shadow:0 10px 26px -12px rgba(35,215,255,.85);
  }
  .brand-text{display:flex;flex-direction:column;line-height:1.3;min-width:0;}
  .brand-text strong{color:var(--t1);font-size:14.5px;font-weight:700;white-space:nowrap;overflow:hidden;text-overflow:ellipsis;}
  .brand-text em{color:var(--t3);font-size:11px;font-style:normal;letter-spacing:.04em;}

  .nav-group-label{
    font-size:11px;
    letter-spacing:.08em;
    color:var(--t3);
    padding:14px 12px 6px;
    font-weight:600;
  }
  .side-nav{display:flex;flex-direction:column;gap:4px;}
  .nav-item{
    position:relative;
    display:flex;
    align-items:center;
    gap:12px;
    padding:11px 12px;
    border-radius:11px;
    color:var(--t2);
    font-size:15px;
    transition:background .2s ease-out, color .2s ease-out;
  }
  .nav-item i{width:20px;font-size:16px;text-align:center;flex:0 0 auto;}
  .nav-item span{white-space:nowrap;}
  .nav-item:hover{background:rgba(255,255,255,.05);color:var(--t1);}
  .nav-item.active{
    background:rgba(35,215,255,.12);
    color:var(--t1);
    box-shadow:inset 0 0 0 1px rgba(35,215,255,.22);
  }
  .nav-item.active::before{
    content:"";
    position:absolute;
    left:0;top:50%;
    transform:translateY(-50%);
    width:3px;height:20px;
    border-radius:0 3px 3px 0;
    background:var(--primary);
    box-shadow:0 0 12px rgba(35,215,255,.8);
  }
  .nav-item.active i{color:var(--primary);}

  .side-card{
    margin-top:auto;
    padding:16px;
    border-radius:14px;
    border:1px solid var(--line);
    background:linear-gradient(160deg, rgba(35,215,255,.10), rgba(122,92,255,.08));
  }
  .side-card h4{font-size:13px;margin-bottom:6px;}
  .side-card p{font-size:12px;line-height:1.65;color:var(--t3);}
  .side-card .side-link{
    display:inline-flex;align-items:center;gap:6px;
    margin-top:10px;font-size:12.5px;color:var(--primary);font-weight:600;
  }
  .side-card .side-link:hover{color:#7FE9FF;}

  /* ============ 移动端顶部栏 & 抽屉 ============ */
  .mobile-bar{
    display:none;
    position:fixed;
    top:0;left:0;right:0;
    height:64px;
    z-index:90;
    align-items:center;
    justify-content:space-between;
    gap:12px;
    padding:0 18px;
    background:rgba(5,7,14,.94);
    border-bottom:1px solid var(--line);
    backdrop-filter:blur(14px);
    -webkit-backdrop-filter:blur(14px);
  }
  .mobile-bar .brand{padding:0;border:0;margin:0;}
  .mobile-bar .brand-mark{width:34px;height:34px;border-radius:10px;font-size:13px;}
  .mobile-bar .brand-text strong{font-size:13.5px;}
  .mobile-bar .brand-text em{display:none;}
  .menu-toggle{
    width:40px;height:40px;
    display:grid;place-items:center;
    border-radius:11px;
    border:1px solid var(--line);
    color:var(--t1);
    font-size:16px;
    transition:border-color .2s ease-out, color .2s ease-out;
  }
  .menu-toggle:hover{border-color:rgba(35,215,255,.55);color:var(--primary);}
  .drawer-mask{
    display:none;
    position:fixed;
    inset:0;
    z-index:70;
    background:rgba(2,4,9,.68);
    backdrop-filter:blur(2px);
  }

  /* ============ 主内容 ============ */
  .main{
    position:relative;
    z-index:1;
    max-width:1320px;
    margin:0 auto;
    padding:48px 40px 0;
  }
  .badge{
    display:inline-flex;
    align-items:center;
    gap:7px;
    padding:5px 13px;
    border-radius:999px;
    font-size:12px;
    letter-spacing:.04em;
    color:var(--primary);
    background:rgba(35,215,255,.10);
    border:1px solid rgba(35,215,255,.28);
  }
  .badge.badge-accent{
    color:#B9A8FF;
    background:rgba(122,92,255,.12);
    border-color:rgba(122,92,255,.30);
  }
  .badge.badge-warm{
    color:var(--warm);
    background:rgba(255,185,74,.10);
    border-color:rgba(255,185,74,.28);
  }

  /* 页头 */
  .page-head{
    display:grid;
    grid-template-columns:1.35fr .85fr;
    gap:40px;
    align-items:center;
    padding-bottom:8px;
  }
  .page-head h1{
    font-size:52px;
    line-height:1.14;
    margin:18px 0 16px;
  }
  .page-head h1 .hl{
    background:linear-gradient(120deg, var(--primary), #9AD9FF 55%, var(--accent));
    -webkit-background-clip:text;
    background-clip:text;
    color:transparent;
  }
  .lead{
    font-size:16.5px;
    line-height:1.85;
    color:var(--t2);
    max-width:640px;
  }
  .head-meta{
    display:flex;
    flex-wrap:wrap;
    align-items:center;
    gap:0;
    margin-top:26px;
    font-size:13px;
    color:var(--t3);
  }
  .head-meta span{padding:0 16px;}
  .head-meta span:first-child{padding-left:0;}
  .head-meta span + span{border-left:1px solid var(--line);}
  .head-meta strong{color:var(--t1);font-weight:700;}
  .page-head-art{
    position:relative;
    border-radius:var(--r-card);
    overflow:hidden;
    border:1px solid var(--line);
    box-shadow:var(--shadow-card);
    aspect-ratio:4/3;
  }
  .page-head-art img{width:100%;height:100%;object-fit:cover;transition:transform .5s ease-out;}
  .page-head-art:hover img{transform:scale(1.03);}
  .page-head-art::after{
    content:"";
    position:absolute;inset:0;
    background:linear-gradient(180deg, rgba(5,7,14,.10), rgba(5,7,14,.72));
  }
  .head-art-tag{
    position:absolute;
    left:16px;bottom:16px;
    z-index:2;
    font-size:12.5px;
    color:var(--t1);
    padding:6px 12px;
    border-radius:999px;
    background:rgba(5,7,14,.62);
    border:1px solid var(--line);
    backdrop-filter:blur(8px);
  }

  /* 筛选条 */
  .filter-bar{
    display:flex;
    flex-wrap:wrap;
    align-items:center;
    gap:10px;
    margin-top:40px;
    padding:16px;
    border-radius:16px;
    border:1px solid var(--line);
    background:var(--glass);
  }
  .filter-bar .filter-title{
    font-size:13px;
    color:var(--t3);
    margin-right:4px;
    padding-left:4px;
  }
  .chip{
    padding:9px 18px;
    border-radius:999px;
    font-size:14px;
    color:var(--t2);
    border:1px solid var(--line);
    background:rgba(255,255,255,.02);
    transition:border-color .2s ease-out, background .2s ease-out, color .2s ease-out;
  }
  .chip:hover{border-color:rgba(35,215,255,.45);color:var(--t1);}
  .chip.is-active{
    border-color:rgba(35,215,255,.65);
    background:rgba(35,215,255,.12);
    color:var(--t1);
    font-weight:600;
  }

  /* 板块标题 */
  .section{margin-top:96px;}
  .section-head{
    display:flex;
    align-items:flex-end;
    justify-content:space-between;
    gap:20px;
    margin-bottom:26px;
  }
  .section-head h2{
    position:relative;
    font-size:32px;
    line-height:1.25;
    padding-left:16px;
  }
  .section-head h2::before{
    content:"";
    position:absolute;
    left:0;top:8px;bottom:8px;
    width:3px;
    border-radius:3px;
    background:linear-gradient(180deg, var(--primary), var(--accent));
    box-shadow:0 0 14px rgba(35,215,255,.65);
  }
  .section-head .section-sub{
    font-size:14px;
    color:var(--t3);
    max-width:520px;
  }
  .more-link{
    display:inline-flex;
    align-items:center;
    gap:8px;
    font-size:14px;
    font-weight:600;
    color:var(--primary);
    white-space:nowrap;
    transition:gap .2s ease-out, color .2s ease-out;
  }
  .more-link:hover{color:#8FEBFF;gap:12px;}

  /* 大厅横向卡列表 */
  .hall-grid{
    display:grid;
    grid-template-columns:repeat(2, minmax(0,1fr));
    gap:20px;
  }
  .hall-card{
    position:relative;
    display:flex;
    gap:0;
    border-radius:var(--r-card);
    overflow:hidden;
    border:1px solid var(--line);
    background:linear-gradient(180deg, rgba(255,255,255,.058), rgba(255,255,255,.018));
    box-shadow:var(--shadow-card);
    backdrop-filter:blur(12px);
    -webkit-backdrop-filter:blur(12px);
    transition:transform .2s ease-out, border-color .2s ease-out, box-shadow .2s ease-out;
  }
  .hall-card:hover{
    transform:translateY(-4px);
    border-color:rgba(35,215,255,.35);
    box-shadow:0 22px 56px -24px rgba(0,0,0,.9), 0 0 0 1px rgba(35,215,255,.18);
  }
  .hall-thumb{
    position:relative;
    flex:0 0 44%;
    aspect-ratio:16/9;
    overflow:hidden;
    background:var(--bg-1);
  }
  .hall-thumb img{
    width:100%;height:100%;
    object-fit:cover;
    transition:transform .45s ease-out;
  }
  .hall-card:hover .hall-thumb img{transform:scale(1.05);}
  .hall-thumb::after{
    content:"";
    position:absolute;inset:0;
    background:linear-gradient(90deg, rgba(5,7,14,0) 45%, rgba(10,15,28,.92) 100%);
  }
  .hall-body{
    flex:1 1 auto;
    min-width:0;
    display:flex;
    flex-direction:column;
    gap:8px;
    padding:18px 18px 16px;
  }
  .hall-top{display:flex;align-items:center;gap:8px;flex-wrap:wrap;}
  .tag{
    font-size:11.5px;
    padding:3px 10px;
    border-radius:999px;
    color:#B9A8FF;
    background:rgba(122,92,255,.14);
    border:1px solid rgba(122,92,255,.28);
    white-space:nowrap;
  }
  .tag.tag-cyan{
    color:var(--primary);
    background:rgba(35,215,255,.10);
    border-color:rgba(35,215,255,.28);
  }
  .tag.tag-warm{
    color:var(--warm);
    background:rgba(255,185,74,.10);
    border-color:rgba(255,185,74,.26);
  }
  .hall-title{
    font-size:17px;
    line-height:1.4;
    color:var(--t1);
    transition:color .2s ease-out;
  }
  .hall-card:hover .hall-title{color:var(--primary);}
  .hall-desc{
    font-size:13.5px;
    line-height:1.65;
    color:var(--t2);
    display:-webkit-box;
    -webkit-line-clamp:2;
    -webkit-box-orient:vertical;
    overflow:hidden;
  }
  .hall-foot{
    margin-top:auto;
    display:flex;
    align-items:center;
    gap:12px;
    font-size:12.5px;
    color:var(--t3);
    padding-top:8px;
    border-top:1px solid rgba(255,255,255,.06);
  }
  .hall-foot i{color:var(--primary);font-size:11px;}
  .hall-foot .dot{width:3px;height:3px;border-radius:50%;background:var(--t3);}

  /* 数据与卖点 */
  .stat-grid{
    display:grid;
    grid-template-columns:repeat(4, minmax(0,1fr));
    gap:20px;
  }
  .stat-card{
    padding:22px 20px;
    border-radius:16px;
    border:1px solid var(--line);
    background:linear-gradient(170deg, rgba(255,255,255,.06), rgba(255,255,255,.015));
    box-shadow:var(--shadow-card);
    transition:transform .2s ease-out, border-color .2s ease-out;
  }
  .stat-card:hover{transform:translateY(-3px);border-color:rgba(35,215,255,.32);}
  .stat-num{
    font-family:"Barlow","Inter",system-ui,sans-serif;
    font-size:34px;
    font-weight:700;
    line-height:1.1;
    color:var(--t1);
    letter-spacing:-.02em;
  }
  .stat-num em{font-style:normal;font-size:15px;color:var(--primary);margin-left:4px;}
  .stat-label{margin-top:8px;font-size:13.5px;color:var(--t3);}

  /* 评分与反馈 */
  .review-wrap{
    display:grid;
    grid-template-columns:1fr 1.15fr;
    gap:20px;
  }
  .panel-card{
    padding:26px 24px;
    border-radius:var(--r-card);
    border:1px solid var(--line);
    background:linear-gradient(180deg, rgba(255,255,255,.055), rgba(255,255,255,.016));
    box-shadow:var(--shadow-card);
  }
  .panel-card h3{font-size:20px;margin-bottom:6px;}
  .panel-card .panel-sub{font-size:13.5px;color:var(--t3);margin-bottom:20px;}
  .score-row{
    display:grid;
    grid-template-columns:84px 1fr 42px;
    align-items:center;
    gap:14px;
    margin-bottom:14px;
    font-size:13.5px;
    color:var(--t2);
  }
  .score-track{
    height:7px;
    border-radius:999px;
    background:rgba(255,255,255,.08);
    overflow:hidden;
  }
  .score-fill{
    height:100%;
    border-radius:999px;
    background:linear-gradient(90deg, var(--primary-2), var(--primary));
    box-shadow:0 0 14px rgba(35,215,255,.5);
  }
  .score-val{
    font-family:"Barlow","Inter",sans-serif;
    font-weight:700;
    color:var(--t1);
    text-align:right;
  }
  .quote-list{display:flex;flex-direction:column;gap:14px;}
  .quote{
    padding:16px 18px;
    border-radius:14px;
    border:1px solid var(--line);
    background:rgba(255,255,255,.035);
    transition:border-color .2s ease-out, transform .2s ease-out;
  }
  .quote:hover{border-color:rgba(122,92,255,.4);transform:translateX(3px);}
  .quote p{font-size:14px;line-height:1.75;color:var(--t2);}
  .quote .quote-meta{
    margin-top:8px;
    font-size:12px;
    color:var(--t3);
    display:flex;
    align-items:center;
    gap:8px;
  }
  .quote .quote-meta i{color:var(--primary);font-size:11px;}

  /* 流程 */
  .flow-grid{
    display:grid;
    grid-template-columns:repeat(4, minmax(0,1fr));
    gap:20px;
  }
  .flow-item{
    position:relative;
    padding:24px 20px;
    border-radius:16px;
    border:1px solid var(--line);
    background:rgba(255,255,255,.035);
    transition:border-color .2s ease-out, transform .2s ease-out;
  }
  .flow-item:hover{border-color:rgba(35,215,255,.32);transform:translateY(-3px);}
  .flow-idx{
    font-family:"Barlow","Inter",sans-serif;
    font-size:13px;
    font-weight:700;
    color:var(--primary);
    letter-spacing:.08em;
    margin-bottom:12px;
    display:inline-block;
  }
  .flow-item h3{font-size:16px;margin-bottom:8px;}
  .flow-item p{font-size:13.5px;line-height:1.7;color:var(--t2);}

  /* 分页视觉 */
  .pager{
    display:flex;
    align-items:center;
    justify-content:center;
    gap:10px;
    margin-top:36px;
  }
  .pager button{
    min-width:40px;
    height:40px;
    padding:0 12px;
    border-radius:999px;
    border:1px solid var(--line);
    font-size:13.5px;
    color:var(--t2);
    transition:border-color .2s ease-out, color .2s ease-out, background .2s ease-out;
  }
  .pager button:hover{border-color:rgba(35,215,255,.5);color:var(--t1);}
  .pager button.current{
    background:var(--primary);
    color:#04101A;
    border-color:var(--primary);
    font-weight:700;
    box-shadow:0 0 0 1px rgba(35,215,255,.5), 0 8px 28px -8px rgba(35,215,255,.75);
  }

  /* FAQ */
  .faq-list{display:flex;flex-direction:column;gap:12px;}
  .faq-item{
    border-radius:16px;
    border:1px solid var(--line);
    background:linear-gradient(180deg, rgba(255,255,255,.05), rgba(255,255,255,.014));
    overflow:hidden;
    transition:border-color .2s ease-out, box-shadow .2s ease-out;
  }
  .faq-item:hover{border-color:rgba(35,215,255,.3);}
  .faq-item.open{
    border-color:rgba(35,215,255,.38);
    box-shadow:0 0 0 1px rgba(35,215,255,.14), 0 18px 46px -26px rgba(35,215,255,.5);
  }
  .faq-q{
    width:100%;
    display:flex;
    align-items:center;
    justify-content:space-between;
    gap:16px;
    padding:18px 20px 18px 22px;
    text-align:left;
    font-size:16px;
    font-weight:600;
    color:var(--t1);
    position:relative;
  }
  .faq-q::before{
    content:"";
    position:absolute;
    left:0;top:50%;
    transform:translateY(-50%);
    width:3px;height:0;
    border-radius:0 3px 3px 0;
    background:var(--primary);
    box-shadow:0 0 12px rgba(35,215,255,.7);
    transition:height .2s ease-out;
  }
  .faq-item.open .faq-q::before{height:22px;}
  .faq-item.open .faq-q{color:var(--primary);}
  .faq-icon{
    flex:0 0 auto;
    width:28px;height:28px;
    display:grid;place-items:center;
    border-radius:50%;
    border:1px solid var(--line);
    color:var(--t3);
    font-size:12px;
    transition:transform .25s ease-out, color .2s ease-out, border-color .2s ease-out;
  }
  .faq-item.open .faq-icon{
    transform:rotate(45deg);
    color:var(--primary);
    border-color:rgba(35,215,255,.5);
  }
  .faq-a{
    display:none;
    padding:0 22px 20px;
    font-size:15px;
    line-height:1.8;
    color:var(--t2);
  }
  .faq-item.open .faq-a{display:block;}

  /* CTA */
  .cta-banner{
    position:relative;
    overflow:hidden;
    display:flex;
    align-items:center;
    justify-content:space-between;
    gap:32px;
    padding:40px 44px;
    border-radius:22px;
    border:1px solid rgba(35,215,255,.24);
    background:
      linear-gradient(115deg, rgba(35,215,255,.16), rgba(122,92,255,.13) 55%, rgba(10,15,28,.6)),
      var(--panel);
    box-shadow:0 28px 70px -34px rgba(35,215,255,.55), inset 0 1px 0 rgba(255,255,255,.09);
  }
  .cta-banner::after{
    content:"";
    position:absolute;
    top:-40%;right:-10%;
    width:420px;height:420px;
    border-radius:50%;
    background:radial-gradient(circle, rgba(122,92,255,.30), transparent 68%);
    pointer-events:none;
  }
  .cta-copy{position:relative;z-index:1;max-width:620px;}
  .cta-copy h2{font-size:28px;line-height:1.3;margin-bottom:10px;}
  .cta-copy p{font-size:14.5px;color:var(--t2);}
  .cta-actions{position:relative;z-index:1;display:flex;gap:12px;flex-wrap:wrap;}

  .btn{
    display:inline-flex;
    align-items:center;
    justify-content:center;
    gap:9px;
    height:44px;
    padding:0 24px;
    border-radius:var(--r-btn);
    font-size:15px;
    font-weight:600;
    transition:transform .2s ease-out, box-shadow .2s ease-out, filter .2s ease-out, border-color .2s ease-out, color .2s ease-out;
    white-space:nowrap;
  }
  .btn-primary{
    background:var(--primary);
    color:#04101A;
    box-shadow:0 10px 28px -12px rgba(35,215,255,.9);
  }
  .btn-primary:hover{
    filter:brightness(1.08);
    box-shadow:0 0 0 1px rgba(35,215,255,.55), 0 12px 38px -8px rgba(35,215,255,.85);
  }
  .btn-primary:active{transform:translateY(1px);}
  .btn-ghost{
    border:1px solid var(--line);
    color:var(--t1);
    background:rgba(255,255,255,.02);
  }
  .btn-ghost:hover{border-color:rgba(35,215,255,.55);color:var(--primary);}
  .btn-ghost:active{transform:translateY(1px);}

  /* 页脚 */
  .site-footer{
    position:relative;
    z-index:1;
    margin-top:96px;
    padding:56px 40px 26px;
    background:#04060C;
    border-top:1px solid var(--line);
  }
  .footer-grid{
    display:grid;
    grid-template-columns:1.5fr 1fr 1fr 1.25fr;
    gap:32px;
    max-width:1320px;
    margin:0 auto;
  }
  .footer-col + .footer-col{border-left:1px solid rgba(255,255,255,.06);padding-left:32px;}
  .footer-brand{
    display:flex;
    align-items:center;
    gap:11px;
    margin-bottom:14px;
  }
  .footer-brand .brand-mark{width:36px;height:36px;border-radius:10px;font-size:13.5px;}
  .footer-brand strong{color:var(--t1);font-size:15px;}
  .footer-col p{font-size:13.5px;line-height:1.8;color:var(--t3);}
  .footer-col h4{
    font-size:14px;
    margin-bottom:14px;
    color:var(--t1);
    letter-spacing:.02em;
  }
  .footer-links{display:flex;flex-direction:column;gap:10px;}
  .footer-links a{
    position:relative;
    font-size:13.5px;
    color:var(--t3);
    width:fit-content;
    transition:color .2s ease-out, transform .2s ease-out;
  }
  .footer-links a::after{
    content:"";
    position:absolute;
    left:0;bottom:-2px;
    width:0;height:1px;
    background:var(--primary);
    transition:width .2s ease-out;
  }
  .footer-links a:hover{color:var(--primary);transform:translateX(.2em);}
  .footer-links a:hover::after{width:100%;}
  .footer-bottom{
    max-width:1320px;
    margin:36px auto 0;
    padding-top:20px;
    border-top:1px solid rgba(255,255,255,.06);
    display:flex;
    align-items:center;
    justify-content:space-between;
    gap:16px;
    flex-wrap:wrap;
    font-size:12.5px;
    color:var(--t3);
  }

  /* ============ 响应式 ============ */
  @media (max-width:1279px){
    body{padding-left:var(--sidebar-w-narrow);}
    .sidebar{width:var(--sidebar-w-narrow);padding:22px 12px 20px;align-items:stretch;}
    .brand{justify-content:center;padding:4px 0 18px;}
    .brand-text{display:none;}
    .nav-group-label{text-align:center;padding:14px 0 6px;font-size:10px;}
    .nav-item{justify-content:center;padding:12px 0;}
    .nav-item span{
      position:absolute;
      left:100%;
      margin-left:12px;
      padding:7px 13px;
      border-radius:9px;
      background:var(--panel);
      border:1px solid var(--line);
      color:var(--t1);
      font-size:13px;
      white-space:nowrap;
      opacity:0;
      pointer-events:none;
      transform:translateX(-4px);
      transition:opacity .18s ease-out, transform .18s ease-out;
      box-shadow:var(--shadow-card);
      z-index:95;
    }
    .nav-item:hover span{opacity:1;transform:translateX(0);}
    .side-card{padding:12px 8px;text-align:center;}
    .side-card h4{font-size:11.5px;}
    .side-card p{display:none;}
    .side-card .side-link{margin-top:0;font-size:11.5px;justify-content:center;}
    .side-card .side-link i{display:none;}
    .main{padding:42px 32px 0;}
    .page-head h1{font-size:44px;}
  }

  @media (max-width:1023px){
    body{padding-left:0;padding-top:64px;}
    .mobile-bar{display:flex;}
    .sidebar{
      width:280px;
      padding:22px 18px;
      transform:translateX(-100%);
      box-shadow:0 0 60px rgba(0,0,0,.8);
    }
    body.drawer-open .sidebar{transform:translateX(0);}
    body.drawer-open .drawer-mask{display:block;}
    .sidebar .brand{justify-content:flex-start;padding:4px 4px 18px;}
    .sidebar .brand-text{display:flex;}
    .sidebar .nav-group-label{text-align:left;padding:14px 12px 6px;font-size:11px;}
    .sidebar .nav-item{justify-content:flex-start;padding:11px 12px;}
    .sidebar .nav-item span{position:static;opacity:1;pointer-events:auto;transform:none;padding:0;margin:0;background:none;border:0;box-shadow:none;font-size:15px;color:inherit;}
    .sidebar .side-card{text-align:left;padding:16px;}
    .sidebar .side-card p{display:block;}
    .sidebar .side-card .side-link{justify-content:flex-start;margin-top:10px;font-size:12.5px;}
    .sidebar .side-card .side-link i{display:inline-block;}
    .main{padding:36px 24px 0;}
    .page-head{grid-template-columns:1fr;gap:26px;}
    .page-head h1{font-size:38px;}
    .page-head-art{max-width:520px;aspect-ratio:16/9;}
    .stat-grid{grid-template-columns:repeat(2,minmax(0,1fr));}
    .flow-grid{grid-template-columns:repeat(2,minmax(0,1fr));}
    .review-wrap{grid-template-columns:1fr;}
    .section{margin-top:72px;}
    .section-head h2{font-size:26px;}
    .cta-banner{padding:32px 28px;flex-direction:column;align-items:flex-start;gap:22px;}
    .footer-grid{grid-template-columns:1fr 1fr;gap:28px;}
    .footer-col + .footer-col{border-left:0;padding-left:0;}
    .site-footer{padding:44px 24px 22px;}
  }

  @media (max-width:767px){
    .main{padding:28px 20px 0;}
    .page-head h1{font-size:32px;}
    .lead{font-size:15.5px;}
    .head-meta span{padding:0 11px;font-size:12.5px;}
    .hall-grid{grid-template-columns:1fr;}
    .section{margin-top:56px;}
    .section-head{flex-direction:column;align-items:flex-start;gap:10px;}
    .section-head h2{font-size:23px;}
    .stat-grid{grid-template-columns:repeat(2,minmax(0,1fr));gap:14px;}
    .flow-grid{grid-template-columns:1fr;gap:14px;}
    .stat-num{font-size:27px;}
    .filter-bar{padding:13px;}
    .chip{padding:8px 15px;font-size:13px;}
    .cta-banner{padding:26px 22px;border-radius:18px;}
    .cta-copy h2{font-size:22px;}
    .btn{height:40px;padding:0 20px;font-size:14px;}
    .footer-grid{grid-template-columns:1fr;}
    .site-footer{padding:36px 20px 20px;margin-top:56px;}
    .footer-bottom{flex-direction:column;align-items:flex-start;gap:6px;}
  }

  @media (max-width:520px){
    .hall-card{flex-direction:column;}
    .hall-thumb{flex:0 0 auto;width:100%;aspect-ratio:16/9;}
    .hall-thumb::after{background:linear-gradient(180deg, rgba(5,7,14,0) 55%, rgba(10,15,28,.92) 100%);}
    .stat-grid{grid-template-columns:1fr;}
    .page-head h1{font-size:29px;}
    .score-row{grid-template-columns:70px 1fr 38px;gap:10px;font-size:12.5px;}
  }

  @media (prefers-reduced-motion:reduce){
    *{transition:none !important;animation:none !important;}
    html{scroll-behavior:auto;}
  }

/* roulang page: category3 */
:root{
    --bg-0:#05070E;
    --bg-1:#0A0F1C;
    --panel:#0E1526;
    --primary:#23D7FF;
    --primary-2:#0FA8D8;
    --accent:#7A5CFF;
    --warm:#FFB94A;
    --t1:#EAF2FF;
    --t2:#A9B7CF;
    --t3:#6C7A93;
    --line:rgba(255,255,255,0.10);
    --glass:rgba(255,255,255,0.055);
    --radius-card:18px;
    --radius-btn:12px;
    --shadow-card:0 18px 50px -22px rgba(0,0,0,.85), inset 0 1px 0 rgba(255,255,255,.06);
    --glow:0 0 0 1px rgba(35,215,255,.45), 0 8px 32px -8px rgba(35,215,255,.5);
    --side-w:240px;
  }

  *,*::before,*::after{box-sizing:border-box;}

  html{-webkit-text-size-adjust:100%;}

  body.page-body{
    margin:0;
    min-height:100vh;
    color:var(--t2);
    font-family:"PingFang SC","HarmonyOS Sans SC","MiSans","Microsoft YaHei","Inter",sans-serif;
    font-size:16px;
    line-height:1.75;
    font-feature-settings:"tnum" 1,"lnum" 1;
    background-color:var(--bg-0);
    background-image:
      radial-gradient(920px 540px at 10% -10%, rgba(35,215,255,.13), transparent 62%),
      radial-gradient(780px 480px at 94% 2%, rgba(122,92,255,.12), transparent 60%),
      linear-gradient(rgba(255,255,255,.022) 1px, transparent 1px),
      linear-gradient(90deg, rgba(255,255,255,.022) 1px, transparent 1px);
    background-size:auto, auto, 24px 24px, 24px 24px;
    background-attachment:fixed;
    -webkit-font-smoothing:antialiased;
  }

  ::selection{background:rgba(35,215,255,.28);color:#fff;}

  ::-webkit-scrollbar{width:10px;height:10px;}
  ::-webkit-scrollbar-track{background:#070B14;}
  ::-webkit-scrollbar-thumb{background:rgba(35,215,255,.22);border-radius:99px;border:2px solid #070B14;}
  ::-webkit-scrollbar-thumb:hover{background:rgba(35,215,255,.4);}

  a{color:inherit;text-decoration:none;}
  img{display:block;max-width:100%;}
  button{font-family:inherit;cursor:pointer;}
  h1,h2,h3,h4,p,ul,ol,figure{margin:0;}
  ul,ol{padding:0;list-style:none;}

  .container{
    width:100%;
    max-width:1320px;
    margin:0 auto;
    padding:0 40px;
  }

  /* ============ 左侧 App Shell ============ */
  .side-nav{
    position:fixed;
    top:0;left:0;bottom:0;
    width:var(--side-w);
    padding:26px 18px 20px;
    display:flex;
    flex-direction:column;
    gap:4px;
    overflow-y:auto;
    overflow-x:hidden;
    background:linear-gradient(180deg, rgba(14,21,38,.95), rgba(5,7,14,.97));
    border-right:1px solid var(--line);
    backdrop-filter:blur(14px);
    z-index:90;
    transition:width .22s ease-out, transform .26s ease-out;
  }
  .side-nav::-webkit-scrollbar{width:4px;}

  .brand{
    display:flex;
    align-items:center;
    gap:12px;
    padding:6px 4px 20px;
    margin-bottom:10px;
    border-bottom:1px solid var(--line);
  }
  .brand-mark{
    flex:0 0 auto;
    width:42px;height:42px;
    display:grid;place-items:center;
    border-radius:13px;
    background:linear-gradient(145deg, rgba(35,215,255,.22), rgba(122,92,255,.22));
    border:1px solid rgba(35,215,255,.4);
    color:var(--t1);
    font-weight:700;
    font-size:15px;
    letter-spacing:.04em;
    box-shadow:0 0 22px -8px rgba(35,215,255,.75);
  }
  .brand-text{display:flex;flex-direction:column;line-height:1.3;min-width:0;}
  .brand-text strong{
    font-size:15px;
    font-weight:700;
    color:var(--t1);
    white-space:nowrap;
    overflow:hidden;
    text-overflow:ellipsis;
  }
  .brand-text em{
    font-style:normal;
    font-size:11px;
    color:var(--t3);
    letter-spacing:.04em;
    white-space:nowrap;
  }

  .nav-group-label{
    font-size:11px;
    letter-spacing:.16em;
    color:var(--t3);
    padding:16px 10px 8px;
    font-weight:600;
  }
  .nav-group-label:first-of-type{padding-top:6px;}

  .nav-item{
    position:relative;
    display:flex;
    align-items:center;
    gap:11px;
    padding:10px 12px;
    border-radius:10px;
    color:var(--t2);
    font-size:15px;
    font-weight:500;
    transition:background .2s ease-out, color .2s ease-out;
    white-space:nowrap;
  }
  .nav-item i{font-size:16px;width:20px;text-align:center;opacity:.9;flex:0 0 auto;}
  .nav-item:hover{background:rgba(255,255,255,.05);color:var(--t1);}
  .nav-item.active{
    background:rgba(35,215,255,.12);
    color:var(--t1);
    box-shadow:inset 3px 0 0 var(--primary);
  }
  .nav-item.active i{color:var(--primary);opacity:1;}
  .nav-item:focus-visible{
    outline:none;
    box-shadow:0 0 0 2px rgba(35,215,255,.6);
  }

  .side-foot{
    margin-top:auto;
    padding:14px;
    border-radius:14px;
    background:var(--glass);
    border:1px solid var(--line);
    font-size:12px;
    line-height:1.65;
    color:var(--t3);
  }
  .side-foot strong{display:block;color:var(--t1);font-size:13px;margin-bottom:4px;}

  /* ============ 主区域 ============ */
  .main-wrap{
    margin-left:var(--side-w);
    min-height:100vh;
    transition:margin .22s ease-out;
  }

  .topbar{display:none;}
  .nav-backdrop{display:none;}

  /* ============ 页面头部 ============ */
  .page-hero{
    position:relative;
    overflow:hidden;
    border-bottom:1px solid var(--line);
    background-image:
      linear-gradient(102deg, rgba(5,7,14,.94) 0%, rgba(5,7,14,.80) 48%, rgba(5,7,14,.58) 100%),
      url('/assets/images/backpic/back-1.png');
    background-size:cover;
    background-position:center;
  }
  .page-hero::after{
    content:"";
    position:absolute;
    inset:0;
    background:
      radial-gradient(620px 380px at 8% 100%, rgba(35,215,255,.20), transparent 65%),
      radial-gradient(520px 320px at 88% 0%, rgba(122,92,255,.18), transparent 62%);
    pointer-events:none;
  }
  .hero-inner{
    position:relative;
    z-index:2;
    display:grid;
    grid-template-columns:minmax(0,1fr) 380px;
    gap:48px;
    align-items:center;
    padding-top:64px;
    padding-bottom:64px;
  }
  .badge{
    display:inline-flex;
    align-items:center;
    gap:8px;
    padding:6px 14px;
    border-radius:999px;
    font-size:12px;
    letter-spacing:.06em;
    color:var(--primary);
    background:rgba(35,215,255,.10);
    border:1px solid rgba(35,215,255,.24);
  }
  .badge.accent{
    color:#B9A9FF;
    background:rgba(122,92,255,.12);
    border-color:rgba(122,92,255,.28);
  }
  .hero-title{
    font-size:52px;
    line-height:1.14;
    font-weight:700;
    color:var(--t1);
    letter-spacing:-.01em;
    margin-top:20px;
  }
  .hero-lead{
    margin-top:18px;
    font-size:17px;
    line-height:1.8;
    color:var(--t2);
    max-width:560px;
  }
  .hero-meta{
    display:flex;
    flex-wrap:wrap;
    align-items:center;
    gap:0;
    margin-top:26px;
    font-size:13px;
    color:var(--t3);
  }
  .hero-meta span{
    display:inline-flex;
    align-items:center;
    gap:7px;
    padding:0 16px;
    border-left:1px solid rgba(255,255,255,.14);
    line-height:1.4;
  }
  .hero-meta span:first-child{padding-left:0;border-left:0;}
  .hero-meta i{color:var(--primary);font-size:12px;}

  .hero-actions{display:flex;flex-wrap:wrap;gap:14px;margin-top:30px;}

  .btn{
    display:inline-flex;
    align-items:center;
    justify-content:center;
    gap:9px;
    height:44px;
    padding:0 24px;
    border-radius:var(--radius-btn);
    font-size:15px;
    font-weight:600;
    letter-spacing:.01em;
    border:1px solid transparent;
    transition:transform .2s ease-out, box-shadow .2s ease-out, background .2s ease-out, border-color .2s ease-out, color .2s ease-out;
    white-space:nowrap;
  }
  .btn-primary{
    background:linear-gradient(135deg, var(--primary), var(--primary-2));
    color:#04101A;
    box-shadow:0 10px 30px -14px rgba(35,215,255,.9);
  }
  .btn-primary:hover{
    box-shadow:var(--glow);
    filter:brightness(1.06);
  }
  .btn-primary:active{transform:translateY(1px);}
  .btn-ghost{
    background:rgba(255,255,255,.04);
    border-color:var(--line);
    color:var(--t1);
    backdrop-filter:blur(8px);
  }
  .btn-ghost:hover{
    border-color:rgba(35,215,255,.55);
    color:#fff;
    box-shadow:0 8px 26px -14px rgba(35,215,255,.7);
  }
  .btn-ghost:active{transform:translateY(1px);}
  .btn:focus-visible{
    outline:none;
    box-shadow:0 0 0 2px rgba(35,215,255,.6);
  }

  .hero-figure{
    position:relative;
    border-radius:var(--radius-card);
    overflow:hidden;
    border:1px solid rgba(255,255,255,.16);
    box-shadow:var(--shadow-card);
    background:var(--panel);
    aspect-ratio:4/3;
  }
  .hero-figure img{
    width:100%;height:100%;object-fit:cover;
    transition:transform .5s ease-out;
  }
  .hero-figure:hover img{transform:scale(1.04);}
  .hero-figure figcaption{
    position:absolute;
    left:0;right:0;bottom:0;
    padding:26px 18px 14px;
    font-size:12px;
    letter-spacing:.06em;
    color:rgba(234,242,255,.86);
    background:linear-gradient(180deg, transparent, rgba(5,7,14,.88));
  }

  /* ============ 板块通用 ============ */
  .section{padding:88px 0 0;}
  .section:last-of-type{padding-bottom:96px;}
  .section-head{max-width:720px;margin-bottom:28px;}
  .section-title{
    position:relative;
    display:flex;
    align-items:center;
    gap:14px;
    font-size:32px;
    line-height:1.25;
    font-weight:700;
    color:var(--t1);
    letter-spacing:-.01em;
  }
  .section-title::before{
    content:"";
    width:3px;
    height:26px;
    border-radius:99px;
    background:linear-gradient(180deg, var(--primary), var(--primary-2));
    box-shadow:0 0 16px rgba(35,215,255,.65);
    flex:0 0 auto;
  }
  .section-desc{
    margin-top:12px;
    font-size:15px;
    line-height:1.8;
    color:var(--t3);
  }

  .card{
    position:relative;
    background:var(--glass);
    border:1px solid var(--line);
    border-radius:var(--radius-card);
    box-shadow:var(--shadow-card);
    backdrop-filter:blur(10px);
    transition:transform .2s ease-out, border-color .2s ease-out, box-shadow .2s ease-out;
  }
  .card:hover{
    transform:translateY(-4px);
    border-color:rgba(35,215,255,.35);
    box-shadow:0 24px 56px -26px rgba(0,0,0,.95), 0 0 0 1px rgba(35,215,255,.18);
  }

  /* ============ 筛选胶囊 ============ */
  .chip-row{
    display:flex;
    flex-wrap:wrap;
    gap:10px;
    margin-bottom:26px;
  }
  .chip{
    height:38px;
    padding:0 18px;
    border-radius:999px;
    font-size:14px;
    font-weight:500;
    color:var(--t2);
    background:rgba(255,255,255,.035);
    border:1px solid var(--line);
    transition:all .2s ease-out;
  }
  .chip:hover{color:var(--t1);border-color:rgba(35,215,255,.4);}
  .chip.is-active{
    color:var(--primary);
    border-color:rgba(35,215,255,.65);
    background:rgba(35,215,255,.12);
    box-shadow:0 0 18px -6px rgba(35,215,255,.6);
  }
  .chip:focus-visible{outline:none;box-shadow:0 0 0 2px rgba(35,215,255,.6);}

  /* ============ 左大图 + 右侧纵向列表 ============ */
  .security-layout{
    display:grid;
    grid-template-columns:minmax(0,400px) minmax(0,1fr);
    gap:20px;
    align-items:start;
  }

  .feature-card{overflow:hidden;}
  .feature-media{
    position:relative;
    aspect-ratio:4/5;
    overflow:hidden;
    border-bottom:1px solid var(--line);
  }
  .feature-media img{
    width:100%;height:100%;object-fit:cover;
    transition:transform .5s ease-out;
  }
  .feature-card:hover .feature-media img{transform:scale(1.04);}
  .feature-media::after{
    content:"";
    position:absolute;inset:0;
    background:linear-gradient(180deg, rgba(5,7,14,.05) 0%, rgba(5,7,14,.72) 100%);
  }
  .corner-badge{
    position:absolute;
    top:14px;left:14px;
    z-index:2;
    padding:5px 12px;
    border-radius:999px;
    font-size:12px;
    font-weight:600;
    color:#04101A;
    background:linear-gradient(135deg, var(--primary), var(--primary-2));
    box-shadow:0 6px 20px -8px rgba(35,215,255,.9);
  }
  .feature-body{padding:22px;}
  .tag{
    display:inline-block;
    padding:3px 10px;
    border-radius:999px;
    font-size:12px;
    color:#C3B6FF;
    background:rgba(122,92,255,.14);
    border:1px solid rgba(122,92,255,.3);
  }
  .feature-body h3{
    margin-top:12px;
    font-size:21px;
    line-height:1.4;
    font-weight:700;
    color:var(--t1);
  }
  .feature-body p{
    margin-top:10px;
    font-size:14px;
    line-height:1.75;
    color:var(--t2);
  }
  .mini-list{margin-top:16px;display:flex;flex-direction:column;gap:9px;}
  .mini-list li{
    display:flex;
    align-items:flex-start;
    gap:9px;
    font-size:13.5px;
    color:var(--t2);
    line-height:1.65;
  }
  .mini-list i{
    margin-top:5px;
    font-size:9px;
    color:var(--primary);
    flex:0 0 auto;
  }
  .link-arrow{
    display:inline-flex;
    align-items:center;
    gap:8px;
    margin-top:18px;
    font-size:14px;
    font-weight:600;
    color:var(--primary);
    transition:gap .2s ease-out, color .2s ease-out;
  }
  .link-arrow:hover{gap:13px;color:#7CE9FF;}
  .link-arrow:focus-visible{outline:none;box-shadow:0 0 0 2px rgba(35,215,255,.6);border-radius:6px;}

  .stack-list{display:flex;flex-direction:column;gap:14px;}
  .stack-item{
    position:relative;
    display:block;
    padding:18px 20px 18px 22px;
    border-radius:14px;
    background:var(--glass);
    border:1px solid var(--line);
    box-shadow:var(--shadow-card);
    backdrop-filter:blur(8px);
    overflow:hidden;
    transition:transform .2s ease-out, border-color .2s ease-out, background .2s ease-out;
  }
  .stack-item::before{
    content:"";
    position:absolute;
    left:0;top:14px;bottom:14px;
    width:2px;
    border-radius:99px;
    background:linear-gradient(180deg, var(--primary), rgba(35,215,255,0));
    box-shadow:0 0 14px rgba(35,215,255,.7);
  }
  .stack-item:hover{
    transform:translateY(-3px);
    border-color:rgba(35,215,255,.35);
    background:rgba(255,255,255,.07);
  }
  .stack-item:focus-visible{outline:none;box-shadow:0 0 0 2px rgba(35,215,255,.6);}
  .stack-item h3{
    font-size:17px;
    line-height:1.45;
    font-weight:600;
    color:var(--t1);
    transition:color .2s ease-out;
    display:-webkit-box;
    -webkit-line-clamp:2;
    -webkit-box-orient:vertical;
    overflow:hidden;
  }
  .stack-item:hover h3{color:var(--primary);}
  .stack-item p{
    margin-top:7px;
    font-size:14px;
    line-height:1.7;
    color:var(--t3);
    display:-webkit-box;
    -webkit-line-clamp:2;
    -webkit-box-orient:vertical;
    overflow:hidden;
  }
  .stack-meta{
    display:flex;
    flex-wrap:wrap;
    align-items:center;
    gap:10px;
    margin-top:12px;
    font-size:12.5px;
    color:var(--t3);
  }
  .stack-meta i{font-size:11px;color:var(--warm);margin-right:5px;}
  .meta-dot{width:3px;height:3px;border-radius:50%;background:rgba(255,255,255,.22);}

  /* ============ 分页视觉 ============ */
  .pager{
    display:flex;
    align-items:center;
    justify-content:center;
    gap:10px;
    margin-top:36px;
  }
  .pager a,.pager span{
    display:inline-grid;
    place-items:center;
    width:40px;height:40px;
    border-radius:999px;
    font-size:14px;
    color:var(--t2);
    border:1px solid var(--line);
    background:rgba(255,255,255,.035);
    transition:all .2s ease-out;
  }
  .pager a:hover{color:var(--t1);border-color:rgba(35,215,255,.45);}
  .pager a:focus-visible{outline:none;box-shadow:0 0 0 2px rgba(35,215,255,.6);}
  .pager .is-current{
    color:#04101A;
    background:linear-gradient(135deg, var(--primary), var(--primary-2));
    border-color:transparent;
    font-weight:700;
    box-shadow:0 0 0 1px rgba(35,215,255,.5), 0 8px 26px -10px rgba(35,215,255,.9);
  }

  /* ============ 处理步骤 ============ */
  .steps{
    display:flex;
    flex-direction:column;
    gap:0;
    border-radius:var(--radius-card);
    border:1px solid var(--line);
    background:linear-gradient(160deg, rgba(14,21,38,.86), rgba(10,15,28,.72));
    box-shadow:var(--shadow-card);
    overflow:hidden;
  }
  .step{
    display:grid;
    grid-template-columns:64px minmax(0,1fr);
    gap:20px;
    padding:24px 26px;
    border-top:1px solid var(--line);
    transition:background .2s ease-out;
  }
  .step:first-child{border-top:0;}
  .step:hover{background:rgba(35,215,255,.045);}
  .step-no{
    font-family:"Barlow","Inter",sans-serif;
    font-size:26px;
    font-weight:700;
    line-height:1.2;
    color:transparent;
    background:linear-gradient(135deg, var(--primary), var(--accent));
    -webkit-background-clip:text;
    background-clip:text;
    letter-spacing:.02em;
  }
  .step h3{
    font-size:18px;
    font-weight:600;
    color:var(--t1);
    line-height:1.5;
  }
  .step p{
    margin-top:8px;
    font-size:14.5px;
    line-height:1.8;
    color:var(--t2);
    max-width:760px;
  }

  /* ============ 数据条 ============ */
  .stat-band{
    display:grid;
    grid-template-columns:repeat(4,minmax(0,1fr));
    border-radius:var(--radius-card);
    border:1px solid var(--line);
    background:linear-gradient(120deg, rgba(35,215,255,.07), rgba(122,92,255,.07));
    box-shadow:var(--shadow-card);
    overflow:hidden;
    margin-top:48px;
  }
  .stat-cell{
    padding:26px 24px;
    border-left:1px solid var(--line);
  }
  .stat-cell:first-child{border-left:0;}
  .stat-num{
    font-family:"Barlow","Inter",sans-serif;
    font-size:30px;
    font-weight:700;
    color:var(--t1);
    line-height:1.1;
    letter-spacing:.01em;
  }
  .stat-num i{font-size:15px;color:var(--primary);margin-right:8px;vertical-align:2px;}
  .stat-label{
    margin-top:8px;
    font-size:13px;
    color:var(--t3);
    letter-spacing:.02em;
  }

  /* ============ FAQ ============ */
  .faq-list{display:flex;flex-direction:column;gap:12px;max-width:920px;}
  .faq-item{
    border-radius:14px;
    background:var(--glass);
    border:1px solid var(--line);
    backdrop-filter:blur(8px);
    box-shadow:var(--shadow-card);
    overflow:hidden;
    transition:border-color .2s ease-out, background .2s ease-out;
  }
  .faq-item.is-open{
    border-color:rgba(35,215,255,.4);
    background:rgba(35,215,255,.05);
  }
  .faq-q{
    width:100%;
    display:flex;
    align-items:center;
    justify-content:space-between;
    gap:18px;
    padding:18px 20px;
    background:transparent;
    border:0;
    text-align:left;
    font-size:16px;
    font-weight:600;
    color:var(--t1);
    line-height:1.55;
    transition:color .2s ease-out;
  }
  .faq-q:hover{color:var(--primary);}
  .faq-q:focus-visible{outline:none;box-shadow:inset 0 0 0 2px rgba(35,215,255,.55);border-radius:14px;}
  .faq-icon{
    flex:0 0 auto;
    width:28px;height:28px;
    display:grid;place-items:center;
    border-radius:999px;
    border:1px solid rgba(35,215,255,.4);
    color:var(--primary);
    font-size:12px;
    transition:transform .25s ease-out, background .2s ease-out;
  }
  .faq-item.is-open .faq-icon{
    transform:rotate(45deg);
    background:rgba(35,215,255,.16);
  }
  .faq-a{
    display:none;
    padding:0 20px 18px;
    font-size:15px;
    line-height:1.8;
    color:var(--t2);
  }
  .faq-item.is-open .faq-a{display:block;}

  /* ============ CTA ============ */
  .cta-band{
    position:relative;
    overflow:hidden;
    display:flex;
    align-items:center;
    justify-content:space-between;
    gap:36px;
    margin-top:88px;
    padding:40px 44px;
    border-radius:22px;
    border:1px solid rgba(35,215,255,.3);
    background:
      linear-gradient(118deg, rgba(35,215,255,.16) 0%, rgba(122,92,255,.14) 55%, rgba(10,15,28,.9) 100%),
      rgba(14,21,38,.86);
    box-shadow:var(--shadow-card);
  }
  .cta-band::before{
    content:"";
    position:absolute;
    top:-60%;left:-10%;
    width:60%;height:220%;
    background:linear-gradient(90deg, transparent, rgba(255,255,255,.09), transparent);
    transform:rotate(18deg);
    pointer-events:none;
  }
  .cta-copy{position:relative;z-index:2;max-width:640px;}
  .cta-copy h2{
    font-size:28px;
    line-height:1.3;
    font-weight:700;
    color:var(--t1);
  }
  .cta-copy p{
    margin-top:10px;
    font-size:15px;
    line-height:1.75;
    color:var(--t2);
  }
  .cta-actions{position:relative;z-index:2;display:flex;gap:14px;flex-wrap:wrap;}

  /* ============ 页脚 ============ */
  .site-footer{
    margin-top:96px;
    background:#04060C;
    border-top:1px solid var(--line);
  }
  .footer-grid{
    max-width:1320px;
    margin:0 auto;
    padding:56px 40px 40px;
    display:grid;
    grid-template-columns:1.4fr 1fr 1fr 1.2fr;
    gap:40px;
  }
  .footer-col h4{
    font-size:14px;
    font-weight:600;
    color:var(--t1);
    letter-spacing:.04em;
    margin-bottom:16px;
  }
  .footer-col p{
    font-size:13.5px;
    line-height:1.85;
    color:var(--t3);
  }
  .footer-brand{
    display:flex;
    align-items:center;
    gap:12px;
    margin-bottom:16px;
  }
  .footer-brand .brand-mark{
    width:38px;height:38px;
    border-radius:11px;
    font-size:13px;
  }
  .footer-brand strong{
    font-size:16px;
    color:var(--t1);
    font-weight:700;
  }
  .footer-links{
    display:flex;
    flex-direction:column;
    gap:11px;
  }
  .footer-links a{
    position:relative;
    font-size:13.5px;
    color:var(--t3);
    width:fit-content;
    transition:color .2s ease-out, transform .2s ease-out;
  }
  .footer-links a::after{
    content:"";
    position:absolute;
    left:0;bottom:-3px;
    width:0;height:1px;
    background:var(--primary);
    transition:width .2s ease-out;
  }
  .footer-links a:hover{color:var(--primary);transform:translateY(-1px);}
  .footer-links a:hover::after{width:100%;}
  .footer-links a:focus-visible{outline:none;box-shadow:0 0 0 2px rgba(35,215,255,.6);border-radius:4px;}
  .footer-bottom{
    max-width:1320px;
    margin:0 auto;
    padding:20px 40px 32px;
    display:flex;
    flex-wrap:wrap;
    align-items:center;
    justify-content:space-between;
    gap:12px;
    border-top:1px solid rgba(255,255,255,.07);
    font-size:12.5px;
    color:var(--t3);
  }

  /* ============ 响应式 ============ */
  @media (max-width:1535px){
    .hero-inner{grid-template-columns:minmax(0,1fr) 340px;gap:40px;}
  }

  @media (max-width:1279px) and (min-width:1024px){
    :root{--side-w:88px;}
    .side-nav{padding:22px 12px;align-items:center;}
    .brand{justify-content:center;padding-bottom:16px;width:100%;}
    .brand-text{display:none;}
    .nav-group-label{display:none;}
    .nav-item{justify-content:center;padding:12px 0;width:100%;gap:0;}
    .nav-item span{
      display:none;
      position:absolute;
      left:100%;
      top:50%;
      transform:translateY(-50%);
      margin-left:10px;
      padding:6px 12px;
      border-radius:8px;
      background:var(--panel);
      border:1px solid var(--line);
      font-size:13px;
      white-space:nowrap;
      z-index:95;
      box-shadow:0 12px 30px -14px rgba(0,0,0,.9);
    }
    .nav-item:hover span{display:block;}
    .side-foot{display:none;}
    .hero-inner{grid-template-columns:minmax(0,1fr) 300px;gap:32px;}
    .hero-title{font-size:44px;}
    .security-layout{grid-template-columns:minmax(0,340px) minmax(0,1fr);}
    .footer-grid{grid-template-columns:1.3fr 1fr 1fr;gap:32px;}
  }

  @media (max-width:1023px){
    .topbar{
      position:fixed;
      top:0;left:0;right:0;
      height:60px;
      display:flex;
      align-items:center;
      gap:14px;
      padding:0 16px;
      background:rgba(5,7,14,.94);
      border-bottom:1px solid var(--line);
      backdrop-filter:blur(12px);
      z-index:70;
    }
    .topbar .brand-mark{width:34px;height:34px;border-radius:10px;font-size:12px;}
    .topbar-title{
      font-size:14.5px;
      font-weight:700;
      color:var(--t1);
      white-space:nowrap;
      overflow:hidden;
      text-overflow:ellipsis;
    }
    .menu-btn{
      width:38px;height:38px;
      display:grid;place-items:center;
      border-radius:10px;
      border:1px solid var(--line);
      background:rgba(255,255,255,.04);
      color:var(--t1);
      font-size:15px;
      flex:0 0 auto;
    }
    .menu-btn:hover{border-color:rgba(35,215,255,.5);color:var(--primary);}

    .side-nav{
      width:250px;
      transform:translateX(-102%);
      box-shadow:0 0 60px rgba(0,0,0,.8);
    }
    .side-nav.is-open{transform:translateX(0);}
    .nav-backdrop{
      display:none;
      position:fixed;
      inset:0;
      background:rgba(2,4,9,.68);
      backdrop-filter:blur(3px);
      z-index:80;
    }
    .nav-backdrop.is-open{display:block;}

    .main-wrap{margin-left:0;padding-top:60px;}

    .container{padding:0 20px;}
    .hero-inner{
      grid-template-columns:minmax(0,1fr);
      gap:28px;
      padding-top:44px;
      padding-bottom:44px;
    }
    .hero-title{font-size:36px;}
    .hero-figure{aspect-ratio:16/9;max-width:520px;}
    .section{padding-top:64px;}
    .section:last-of-type{padding-bottom:72px;}
    .section-title{font-size:26px;}
    .security-layout{grid-template-columns:minmax(0,1fr);}
    .feature-media{aspect-ratio:16/9;}
    .stat-band{grid-template-columns:repeat(2,minmax(0,1fr));}
    .stat-cell:nth-child(odd){border-left:0;}
    .stat-cell:nth-child(3),.stat-cell:nth-child(4){border-top:1px solid var(--line);}
    .cta-band{flex-direction:column;align-items:flex-start;gap:22px;padding:32px 26px;margin-top:64px;}
    .cta-copy h2{font-size:23px;}
    .footer-grid{grid-template-columns:repeat(2,minmax(0,1fr));gap:32px;padding:44px 20px 32px;}
    .footer-bottom{padding:18px 20px 28px;}
  }

  @media (max-width:767px){
    .hero-title{font-size:32px;}
    .hero-lead{font-size:15.5px;}
    .hero-meta{gap:8px 0;}
    .hero-meta span{font-size:12.5px;padding:0 12px;}
    .hero-actions{gap:12px;}
    .btn{height:42px;padding:0 20px;font-size:14.5px;}
    .section{padding-top:56px;}
    .section:last-of-type{padding-bottom:64px;}
    .section-title{font-size:23px;gap:11px;}
    .section-title::before{height:21px;}
    .chip{height:34px;padding:0 14px;font-size:13px;}
    .step{grid-template-columns:44px minmax(0,1fr);gap:14px;padding:20px 18px;}
    .step-no{font-size:21px;}
    .step h3{font-size:16.5px;}
    .stat-cell{padding:20px 16px;}
    .stat-num{font-size:25px;}
    .footer-grid{grid-template-columns:1fr;gap:28px;}
    .faq-q{font-size:15px;padding:16px 16px;}
    .faq-a{padding:0 16px 16px;font-size:14.5px;}
    .pager a,.pager span{width:36px;height:36px;font-size:13px;}
  }

  @media (max-width:519px){
    .container{padding:0 16px;}
    .hero-title{font-size:29px;}
    .feature-body{padding:18px;}
    .feature-body h3{font-size:19px;}
    .cta-band{padding:26px 20px;border-radius:18px;}
    .cta-copy h2{font-size:21px;}
    .hero-meta span{font-size:12px;padding:0 10px;}
  }