/* roulang page: index */
:root{
  --acid:#C8FF2E;
  --acid-soft:rgba(200,255,46,.14);
  --lava:#FF6B2C;
  --lava-soft:rgba(255,107,44,.14);
  --ink:#0D0F12;
  --coal:#15181D;
  --paper:#F7F7F2;
  --txt:#F5F7F4;
  --mut:#A8B0A5;
  --dim:#6C746B;
  --line:rgba(255,255,255,.08);
  --line-strong:rgba(255,255,255,.18);
  --paper-ink:#111411;
  --paper-mut:#4A5148;
  --paper-dim:#7A8276;
  --r-card:18px;
  --r-btn:12px;
  --sh:0 12px 30px rgba(0,0,0,.28);
  --sh-h:0 20px 50px rgba(0,0,0,.38);
}
*{box-sizing:border-box}
html{scroll-behavior:smooth}
body{
  margin:0;
  background:var(--ink);
  color:var(--txt);
  font-family:"PingFang SC","Microsoft YaHei","Noto Sans SC",sans-serif;
  font-size:16px;
  line-height:1.8;
  -webkit-font-smoothing:antialiased;
}
img{max-width:100%;display:block;border:0}
a{color:inherit;text-decoration:none}
button{font:inherit;color:inherit;background:none;border:0;cursor:pointer}
h1,h2,h3,h4{margin:0;letter-spacing:-.01em}
p{margin:0}
ul,ol{margin:0;padding:0;list-style:none}
:focus-visible{outline:2px solid var(--acid);outline-offset:2px;border-radius:6px}
.container{width:100%;max-width:1280px;margin:0 auto;padding:0 48px}
@media (max-width:1024px){.container{padding:0 32px}}
@media (max-width:640px){.container{padding:0 20px}}

/* 顶部信息条 */
.topbar{background:#111318;border-bottom:1px solid var(--line);font-size:13px;color:var(--mut)}
.topbar-inner{display:flex;align-items:center;justify-content:space-between;gap:16px;height:36px}
.topbar-text{display:flex;align-items:center;gap:9px;overflow:hidden;white-space:nowrap;text-overflow:ellipsis}
.dot{width:6px;height:6px;border-radius:50%;background:var(--acid);box-shadow:0 0 0 4px rgba(200,255,46,.16);flex:none}
.topbar-link{color:var(--acid);font-weight:600;white-space:nowrap}
.topbar-link:hover{text-decoration:underline;text-underline-offset:4px}

/* 主导航 */
.site-header{position:sticky;top:0;z-index:50;background:rgba(13,15,18,.72);backdrop-filter:blur(14px);-webkit-backdrop-filter:blur(14px);border-bottom:1px solid transparent;transition:background .25s,border-color .25s}
.site-header.is-stuck{background:rgba(10,12,14,.96);border-bottom-color:var(--line)}
.nav-inner{display:flex;align-items:center;gap:28px;height:70px}
.brand{display:flex;align-items:center;gap:10px;flex:none}
.brand-mark{display:grid;place-items:center;width:34px;height:34px;border-radius:10px;background:var(--acid);color:#0D0F12;font-weight:800;font-size:13px;letter-spacing:-.03em}
.brand-text{font-weight:700;font-size:16px;white-space:nowrap}
.brand-text em{font-style:normal;color:var(--acid)}
.nav-links{display:flex;align-items:center;gap:2px;margin-left:auto}
.nav-link{position:relative;padding:8px 12px;font-size:15px;color:var(--mut);transition:color .2s;white-space:nowrap}
.nav-link::after{content:"";position:absolute;left:12px;right:12px;bottom:2px;height:2px;background:var(--acid);transform:scaleX(0);transform-origin:left;transition:transform .25s}
.nav-link:hover{color:var(--txt)}
.nav-link:hover::after,.nav-link.active::after{transform:scaleX(1)}
.nav-link.active{color:var(--txt)}
.nav-cta{padding:10px 20px;font-size:14px}
.menu-btn{display:none;width:40px;height:40px;border-radius:10px;border:1px solid var(--line);align-items:center;justify-content:center;flex-direction:column;gap:4px}
.menu-btn span{display:block;width:16px;height:2px;background:var(--txt);border-radius:2px}

/* 移动抽屉 */
.drawer-mask{position:fixed;inset:0;background:rgba(6,8,10,.7);opacity:0;pointer-events:none;transition:opacity .25s;z-index:70}
.drawer-mask.is-open{opacity:1;pointer-events:auto}
.drawer{position:fixed;top:0;right:0;bottom:0;width:min(320px,86vw);background:#101317;border-left:1px solid var(--line);z-index:80;transform:translateX(100%);transition:transform .3s ease;padding:24px 22px;display:flex;flex-direction:column;gap:6px}
.drawer.is-open{transform:none}
.drawer h4{font-size:12px;letter-spacing:.12em;color:var(--dim);margin:18px 0 8px}
.drawer a{display:block;padding:12px 14px;border-radius:12px;font-size:15px;color:var(--mut);border:1px solid transparent;transition:.2s}
.drawer a:hover,.drawer a.active{color:var(--txt);background:rgba(255,255,255,.04);border-color:var(--line)}
.drawer .btn{margin-top:20px}

/* 按钮 */
.btn{display:inline-flex;align-items:center;justify-content:center;gap:8px;padding:12px 22px;border-radius:var(--r-btn);font-size:15px;font-weight:600;border:1px solid transparent;transition:transform .18s,box-shadow .18s,background .18s,color .18s,border-color .18s}
.btn:active{transform:translateY(1px)}
.btn-primary{background:var(--acid);color:#0D0F12}
.btn-primary:hover{transform:translateY(-2px);box-shadow:0 12px 30px rgba(200,255,46,.28)}
.btn-ghost{border-color:rgba(200,255,46,.45);color:var(--acid)}
.btn-ghost:hover{background:var(--acid-soft);border-color:var(--acid);transform:translateY(-2px)}
.btn-plain{border-color:var(--line-strong);color:var(--txt)}
.btn-plain:hover{border-color:var(--acid);color:var(--acid);transform:translateY(-2px)}
.text-link{display:inline-flex;align-items:center;gap:6px;margin-top:22px;color:var(--acid);font-weight:600;font-size:15px;border-bottom:1px solid transparent;transition:.2s}
.text-link:hover{border-bottom-color:var(--acid)}

/* 首屏 */
.hero{position:relative;overflow:hidden;padding:96px 0 84px;border-bottom:1px solid var(--line)}
.hero-bg{position:absolute;inset:0;background-image:url('/assets/images/backpic/back-1.webp');background-size:cover;background-position:center;opacity:.24;filter:saturate(.7)}
.hero-grid{position:absolute;inset:0;background-image:linear-gradient(rgba(255,255,255,.05) 1px,transparent 1px),linear-gradient(90deg,rgba(255,255,255,.05) 1px,transparent 1px);background-size:64px 64px;-webkit-mask-image:radial-gradient(ellipse at 50% 25%,#000 20%,transparent 76%);mask-image:radial-gradient(ellipse at 50% 25%,#000 20%,transparent 76%)}
.hero::after{content:"";position:absolute;inset:0;pointer-events:none;background:radial-gradient(70% 55% at 12% 20%,rgba(200,255,46,.13),transparent 62%),radial-gradient(55% 50% at 92% 82%,rgba(255,107,44,.13),transparent 66%)}
.hero-inner{position:relative;z-index:2;max-width:940px}
.eyebrow{display:inline-flex;align-items:center;gap:8px;padding:6px 14px;border-radius:999px;border:1px solid rgba(200,255,46,.35);background:rgba(200,255,46,.08);color:var(--acid);font-size:13px;font-weight:600}
.eyebrow::before{content:"";width:6px;height:6px;border-radius:50%;background:var(--acid)}
.hero-title{font-size:clamp(2.1rem,4.8vw,3.8rem);font-weight:800;line-height:1.1;margin-top:24px}
.hero-title mark{background:none;color:var(--acid)}
.hero-sub{margin-top:22px;font-size:17px;line-height:1.9;color:var(--mut);max-width:700px}
.hero-actions{display:flex;flex-wrap:wrap;gap:14px;margin-top:34px}
.hero-stats{display:grid;grid-template-columns:repeat(4,minmax(0,1fr));gap:1px;margin-top:56px;background:var(--line);border:1px solid var(--line);border-radius:16px;overflow:hidden}
.hero-stat{background:rgba(21,24,29,.9);padding:20px 22px}
.hero-stat b{display:block;font-size:26px;font-weight:800;color:var(--acid);letter-spacing:-.02em;font-variant-numeric:tabular-nums}
.hero-stat span{display:block;margin-top:4px;font-size:13px;color:var(--dim)}

/* 锚点导航 */
.anchor-nav{position:sticky;top:70px;z-index:40;background:rgba(10,12,14,.92);backdrop-filter:blur(12px);border-bottom:1px solid var(--line)}
.anchor-inner{display:flex;gap:8px;padding-top:12px;padding-bottom:12px;overflow-x:auto;scrollbar-width:none}
.anchor-inner::-webkit-scrollbar{display:none}
.pill{white-space:nowrap;padding:8px 16px;border-radius:999px;border:1px solid var(--line);font-size:14px;color:var(--mut);transition:.2s}
.pill:hover{color:var(--txt);border-color:var(--line-strong)}
.pill.is-active{background:var(--acid);border-color:var(--acid);color:#0D0F12;font-weight:600}

/* 板块通用 */
.section{padding:104px 0;border-bottom:1px solid var(--line)}
.section-paper{background:var(--paper);color:var(--paper-ink)}
.section-head{max-width:760px;margin-bottom:56px}
.section-head h2{font-size:clamp(1.6rem,2.9vw,2.4rem);font-weight:700;line-height:1.25;margin-top:16px}
.section-head p{margin-top:16px;color:var(--mut);font-size:16px}
.section-paper .section-head h2{color:var(--paper-ink)}
.section-paper .section-head p{color:var(--paper-mut)}
.section-paper .eyebrow{background:#111411;border-color:#111411;color:var(--acid)}
.reveal{opacity:0;transform:translateY(18px);transition:opacity .5s ease,transform .5s ease}
.reveal.is-in{opacity:1;transform:none}

/* 卖点 */
.sell-grid{display:grid;grid-template-columns:minmax(0,.85fr) minmax(0,1.15fr);gap:64px;align-items:start}
.sell-aside{position:sticky;top:160px}
.sell-aside h2{font-size:clamp(1.5rem,2.6vw,2.1rem);font-weight:700;line-height:1.3;margin-top:18px}
.lead{margin-top:18px;color:var(--mut);font-size:16px}
.sell-list{border-top:1px solid var(--line)}
.sell-item{display:grid;grid-template-columns:auto minmax(0,1fr);gap:24px;padding:28px 4px;border-bottom:1px solid var(--line);transition:background .2s,padding .2s}
.sell-item:hover{background:rgba(255,255,255,.025);padding-left:14px}
.sell-num{font-size:13px;font-weight:700;color:var(--lava);letter-spacing:.08em;padding-top:4px;font-variant-numeric:tabular-nums}
.sell-item h3{font-size:1.15rem;font-weight:600}
.sell-item p{margin-top:8px;color:var(--mut);font-size:15px}

/* 演示 */
.demo-grid{display:grid;grid-template-columns:minmax(0,1.1fr) minmax(0,.9fr);gap:48px;align-items:center}
.demo-figure{margin:0;position:relative;border-radius:var(--r-card);overflow:hidden;border:1px solid var(--line);box-shadow:var(--sh)}
.demo-figure img{width:100%;aspect-ratio:16/10;object-fit:cover}
.demo-figure figcaption{position:absolute;left:0;right:0;bottom:0;padding:18px 20px;font-size:13px;color:#E9EDE6;background:linear-gradient(to top,rgba(9,11,13,.92),transparent)}
.demo-steps{display:flex;flex-direction:column;gap:16px}
.demo-step{padding:22px 24px;border:1px solid var(--line);border-radius:16px;background:var(--coal);transition:.22s}
.demo-step:hover{transform:translateY(-4px);border-color:rgba(200,255,46,.4);box-shadow:var(--sh-h)}
.demo-step span{font-size:12px;font-weight:700;letter-spacing:.14em;color:var(--acid)}
.demo-step h3{font-size:1.1rem;font-weight:600;margin-top:10px}
.demo-step p{margin-top:6px;color:var(--mut);font-size:15px}

/* 证据 */
.stat-row{display:grid;grid-template-columns:repeat(4,minmax(0,1fr));background:#111411;border-radius:16px;overflow:hidden}
.stat-cell{padding:32px 28px;border-right:1px solid rgba(255,255,255,.08)}
.stat-cell:last-child{border-right:0}
.stat-cell b{display:block;font-size:clamp(1.5rem,2.6vw,2.1rem);font-weight:800;color:var(--acid);letter-spacing:-.02em;font-variant-numeric:tabular-nums}
.stat-cell span{display:block;margin-top:8px;font-size:13px;color:#A8B0A5}
.quote-grid{display:grid;grid-template-columns:repeat(3,minmax(0,1fr));gap:20px;margin-top:48px}
.quote-card{display:flex;flex-direction:column;gap:16px;background:#fff;border:1px solid rgba(17,20,17,.08);border-radius:16px;padding:28px 24px;box-shadow:0 8px 24px rgba(17,20,17,.06);transition:.22s}
.quote-card:hover{transform:translateY(-4px);box-shadow:0 18px 40px rgba(17,20,17,.13)}
.quote-card p{font-size:15px;line-height:1.85;color:#2A2F28}
.quote-meta{display:flex;align-items:center;gap:12px;margin-top:auto}
.avatar{width:38px;height:38px;border-radius:50%;display:grid;place-items:center;background:#111411;color:var(--acid);font-size:13px;font-weight:700;flex:none}
.quote-meta strong{display:block;font-size:14px;color:#111411}
.quote-meta small{font-size:12px;color:var(--paper-dim)}
.rating{margin-left:auto;font-size:12px;font-weight:700;color:#111411;background:var(--acid);border-radius:999px;padding:3px 10px}

/* 方案 */
.plan-list{display:flex;flex-direction:column;gap:18px}
.plan-card{display:grid;grid-template-columns:minmax(0,.9fr) minmax(0,1.15fr) auto;gap:32px;align-items:center;padding:32px 34px;border:1px solid var(--line);border-radius:20px;background:var(--coal);transition:.22s}
.plan-card:hover{transform:translateY(-4px);border-color:var(--line-strong);box-shadow:var(--sh-h)}
.plan-card.featured{border-color:rgba(200,255,46,.55);background:linear-gradient(120deg,rgba(200,255,46,.08),rgba(21,24,29,.92) 58%)}
.plan-card h3{font-size:1.3rem;font-weight:700}
.plan-desc{margin-top:8px;color:var(--mut);font-size:15px}
.plan-features{display:grid;grid-template-columns:repeat(2,minmax(0,1fr));gap:8px 20px}
.plan-features li{position:relative;padding-left:18px;font-size:14px;color:var(--mut)}
.plan-features li::before{content:"";position:absolute;left:0;top:11px;width:6px;height:6px;border-radius:50%;background:var(--lava)}
.plan-action{display:flex;flex-direction:column;align-items:flex-end;gap:12px}
.tag{display:inline-block;font-size:12px;font-weight:700;padding:4px 12px;border-radius:999px;background:var(--acid-soft);color:var(--acid);border:1px solid rgba(200,255,46,.35)}
.tag-lava{background:var(--lava-soft);color:var(--lava);border-color:rgba(255,107,44,.35)}

/* 资讯列表 */
.news-head{display:flex;flex-wrap:wrap;align-items:flex-end;justify-content:space-between;gap:20px;margin-bottom:44px}
.news-grid{display:grid;grid-template-columns:repeat(4,minmax(0,1fr));gap:22px}
.news-card{display:flex;flex-direction:column;border:1px solid var(--line);border-radius:16px;overflow:hidden;background:var(--coal);transition:.22s}
.news-card:hover{transform:translateY(-4px);border-color:rgba(200,255,46,.35);box-shadow:var(--sh-h)}
.news-thumb{overflow:hidden}
.news-thumb img{width:100%;aspect-ratio:16/10;object-fit:cover;transition:transform .45s}
.news-card:hover .news-thumb img{transform:scale(1.05)}
.news-body{display:flex;flex-direction:column;gap:12px;padding:20px;flex:1}
.news-body h3{font-size:1.05rem;font-weight:600;line-height:1.5}
.news-card:hover h3{text-decoration:underline;text-decoration-color:var(--acid);text-underline-offset:4px}
.news-body p{font-size:14px;line-height:1.75;color:var(--mut)}
.news-foot{display:flex;align-items:center;justify-content:space-between;gap:10px;margin-top:auto;font-size:12px;color:var(--dim)}
.badge{display:inline-block;font-size:12px;font-weight:600;padding:3px 10px;border-radius:999px;background:var(--lava-soft);color:var(--lava);border:1px solid rgba(255,107,44,.3)}
.empty-state{padding:60px 32px;text-align:center;border:1px dashed var(--line-strong);border-radius:16px;color:var(--mut);font-size:15px}

/* FAQ */
.faq-grid{display:grid;grid-template-columns:minmax(0,.68fr) minmax(0,1.32fr);gap:56px;align-items:start}
.faq-aside{position:sticky;top:160px}
.faq-aside h2{font-size:clamp(1.5rem,2.5vw,2.1rem);font-weight:700;line-height:1.3;margin-top:16px;color:var(--paper-ink)}
.faq-aside p{margin-top:16px;color:var(--paper-mut);font-size:15px}
.faq-list{display:flex;flex-direction:column;gap:12px}
.faq-item{border:1px solid rgba(17,20,17,.1);border-radius:14px;background:#fff;overflow:hidden}
.faq-item summary{display:flex;align-items:center;justify-content:space-between;gap:16px;padding:20px 22px;font-weight:600;color:var(--paper-ink);cursor:pointer;list-style:none}
.faq-item summary::-webkit-details-marker{display:none}
.faq-item summary::after{content:"+";font-size:22px;line-height:1;color:var(--lava);transition:transform .25s;flex:none}
.faq-item[open] summary::after{transform:rotate(180deg)}
.faq-body{padding:0 22px 22px;font-size:15px;line-height:1.85;color:var(--paper-mut)}

/* 底部 CTA */
.cta-band{background:radial-gradient(70% 90% at 15% 15%,rgba(200,255,46,.14),transparent 60%),radial-gradient(60% 80% at 88% 85%,rgba(255,107,44,.14),transparent 64%),#0F1216;border-bottom:0}
.cta-inner{display:grid;grid-template-columns:minmax(0,1.3fr) minmax(0,.7fr);gap:40px;align-items:center}
.cta-inner h2{font-size:clamp(1.7rem,3vw,2.5rem);font-weight:800;line-height:1.2}
.cta-inner p{margin-top:16px;color:var(--mut);max-width:620px}
.cta-actions{display:flex;flex-direction:column;gap:14px;align-items:flex-start}
@media (max-width:768px){.cta-actions{width:100%}.cta-actions .btn{width:100%}}

/* 页脚 */
.site-footer{background:#0A0C0E;border-top:1px solid var(--line);padding:72px 0 34px}
.footer-grid{display:grid;grid-template-columns:1.5fr 1fr 1fr 1fr;gap:40px}
.footer-brand p{margin-top:16px;font-size:14px;color:var(--mut);max-width:340px}
.footer-col h4{font-size:13px;font-weight:700;letter-spacing:.1em;color:var(--dim);margin-bottom:16px}
.footer-col a{display:block;padding:6px 0;font-size:14px;color:var(--mut);transition:color .2s,transform .2s}
.footer-col a:hover{color:var(--acid);transform:translateX(3px)}
.footer-cta{margin-top:34px;display:flex;flex-wrap:wrap;gap:14px}
.footer-bottom{margin-top:56px;padding-top:24px;border-top:1px solid var(--line);display:flex;flex-wrap:wrap;gap:12px;justify-content:space-between;font-size:13px;color:var(--dim)}
.to-top{color:var(--acid);font-weight:600}
.to-top:hover{text-decoration:underline;text-underline-offset:4px}

/* 浮动 CTA */
.float-cta{position:fixed;right:28px;bottom:28px;z-index:60;display:flex;align-items:center;gap:8px;padding:8px 8px 8px 20px;border-radius:999px;background:var(--acid);color:#0D0F12;box-shadow:0 16px 40px rgba(200,255,46,.24);opacity:0;transform:translateY(16px);pointer-events:none;transition:opacity .3s,transform .3s,width .3s}
.float-cta.is-visible{opacity:1;transform:none;pointer-events:auto}
.float-cta a{font-weight:700;font-size:15px;white-space:nowrap}
.float-close{width:30px;height:30px;border-radius:50%;background:rgba(13,15,18,.14);display:grid;place-items:center;font-size:16px;line-height:1;font-weight:700;flex:none}
.float-close:hover{background:rgba(13,15,18,.24)}
.float-cta.is-collapsed{padding:8px}
.float-cta.is-collapsed a{display:none}
.float-cta.pulse{animation:ctaPulse 1.2s ease-out}
@keyframes ctaPulse{0%{box-shadow:0 0 0 0 rgba(200,255,46,.5)}100%{box-shadow:0 0 0 22px rgba(200,255,46,0)}}

/* 响应式 */
@media (max-width:1280px){
  .news-grid{grid-template-columns:repeat(3,minmax(0,1fr))}
}
@media (max-width:1024px){
  .nav-links{display:none}
  .nav-cta{display:none}
  .menu-btn{display:flex;margin-left:auto}
  .sell-grid{grid-template-columns:1fr;gap:40px}
  .sell-aside{position:static}
  .demo-grid{grid-template-columns:1fr;gap:36px}
  .faq-grid{grid-template-columns:1fr;gap:36px}
  .faq-aside{position:static}
  .plan-card{grid-template-columns:1fr;gap:24px}
  .plan-action{align-items:flex-start}
  .footer-grid{grid-template-columns:1fr 1fr}
  .cta-inner{grid-template-columns:1fr}
  .news-grid{grid-template-columns:repeat(2,minmax(0,1fr))}
}
@media (max-width:768px){
  .section{padding:64px 0}
  .hero{padding:64px 0 56px}
  .hero-stats{grid-template-columns:repeat(2,minmax(0,1fr));margin-top:40px}
  .stat-row{grid-template-columns:repeat(2,minmax(0,1fr))}
  .stat-cell{border-right:0;border-bottom:1px solid rgba(255,255,255,.08)}
  .stat-cell:nth-child(odd){border-right:1px solid rgba(255,255,255,.08)}
  .stat-cell:nth-last-child(-n+2){border-bottom:0}
  .quote-grid{grid-template-columns:1fr}
  .anchor-nav{top:62px}
  .nav-inner{height:62px;gap:12px}
  .brand-text{font-size:15px}
}
@media (max-width:640px){
  .news-grid{grid-template-columns:1fr}
  .plan-features{grid-template-columns:1fr}
  .footer-grid{grid-template-columns:1fr}
  .hero-title{font-size:clamp(1.85rem,7.6vw,2.6rem)}
  .hero-actions .btn{width:100%}
  .float-cta{right:14px;left:14px;bottom:14px;justify-content:center;padding:12px 14px}
  .float-cta.is-collapsed{left:auto;right:14px;width:auto}
}

/* roulang page: article */
:root{
  --accent:#C8FF2E;
  --accent-2:#FF6B2C;
  --bg:#0D0F12;
  --bg-2:#15181D;
  --paper:#F7F7F2;
  --text:#F5F7F4;
  --text-2:#A8B0A5;
  --text-3:#6C746B;
  --line:rgba(255,255,255,.08);
  --line-strong:rgba(255,255,255,.16);
  --ok:#3DDC97;
  --warn:#FFB020;
  --danger:#FF4D4F;
  --radius:18px;
  --radius-sm:12px;
  --shadow:0 12px 30px rgba(0,0,0,.28);
  --shadow-hover:0 20px 50px rgba(0,0,0,.38);
  --container:1240px;
}
*,*::before,*::after{box-sizing:border-box;}
html{scroll-behavior:smooth;-webkit-text-size-adjust:100%;}
body{
  margin:0;
  background:var(--bg);
  color:var(--text);
  font-family:"PingFang SC","Microsoft YaHei","Noto Sans SC",sans-serif;
  font-size:16px;
  line-height:1.8;
  -webkit-font-smoothing:antialiased;
}
img{max-width:100%;display:block;}
a{color:inherit;text-decoration:none;}
button,input,textarea,select{font-family:inherit;font-size:inherit;}
h1,h2,h3,h4,p,ul,ol,figure{margin:0;padding:0;}
ul,ol{list-style:none;}
.container{width:100%;max-width:var(--container);margin:0 auto;padding:0 32px;}

/* ============ 顶部主导航 ============ */
.site-header{
  position:sticky;top:0;z-index:70;
  background:rgba(13,15,18,.9);
  backdrop-filter:blur(14px);
  -webkit-backdrop-filter:blur(14px);
  border-bottom:1px solid var(--line);
  transition:background .24s,box-shadow .24s;
}
.site-header.scrolled{background:rgba(9,11,13,.98);box-shadow:0 10px 30px rgba(0,0,0,.42);}
.nav-inner{display:flex;align-items:center;justify-content:space-between;gap:24px;height:72px;}
.brand{display:flex;align-items:center;gap:10px;flex-shrink:0;}
.brand-mark{
  width:38px;height:38px;border-radius:12px;background:var(--accent);color:#0D0F12;
  display:grid;place-items:center;font-weight:800;font-size:14px;letter-spacing:.02em;
  box-shadow:0 6px 18px rgba(200,255,46,.22);
}
.brand-text{font-size:17px;font-weight:700;letter-spacing:-.01em;color:var(--text);white-space:nowrap;}
.brand-text em{font-style:normal;color:var(--accent);}
.nav-links{display:flex;align-items:center;gap:4px;}
.nav-link{
  position:relative;padding:8px 12px;font-size:14.5px;color:var(--text-2);
  border-radius:10px;transition:color .18s;white-space:nowrap;
}
.nav-link::after{
  content:'';position:absolute;left:12px;right:12px;bottom:2px;height:2px;
  background:var(--accent);border-radius:2px;transform:scaleX(0);transform-origin:left;
  transition:transform .22s ease;
}
.nav-link:hover{color:var(--text);}
.nav-link:hover::after{transform:scaleX(1);}
.nav-link.active{color:var(--text);}
.nav-link.active::after{transform:scaleX(1);}
.btn{
  display:inline-flex;align-items:center;justify-content:center;gap:8px;
  padding:11px 20px;border-radius:12px;font-size:14.5px;font-weight:600;
  border:1px solid transparent;cursor:pointer;transition:all .18s ease;
}
.btn-primary{background:var(--accent);color:#0D0F12;}
.btn-primary:hover{background:#d8ff5c;box-shadow:0 0 0 1px rgba(200,255,46,.4),0 10px 26px rgba(200,255,46,.2);transform:translateY(-1px);}
.btn-plain{color:var(--text-2);border-color:var(--line-strong);background:transparent;}
.btn-plain:hover{color:var(--text);border-color:var(--accent);background:rgba(200,255,46,.06);}
.btn:active{transform:translateY(1px);}
.btn:focus-visible,.nav-link:focus-visible,a:focus-visible{outline:2px solid var(--accent);outline-offset:2px;border-radius:8px;}
.nav-cta{flex-shrink:0;}
.menu-btn{
  display:none;flex-direction:column;justify-content:center;gap:5px;
  width:44px;height:44px;border-radius:12px;border:1px solid var(--line-strong);
  background:transparent;cursor:pointer;padding:0 11px;
}
.menu-btn span{display:block;height:2px;background:var(--text);border-radius:2px;transition:transform .2s,opacity .2s;}
.menu-btn.on span:nth-child(1){transform:translateY(7px) rotate(45deg);}
.menu-btn.on span:nth-child(2){opacity:0;}
.menu-btn.on span:nth-child(3){transform:translateY(-7px) rotate(-45deg);}

/* ============ 文章头部 ============ */
.article-head{
  position:relative;overflow:hidden;
  padding:52px 0 46px;
  border-bottom:1px solid var(--line);
}
.article-head::before{
  content:'';position:absolute;inset:0;pointer-events:none;
  background-image:
    linear-gradient(rgba(255,255,255,.045) 1px,transparent 1px),
    linear-gradient(90deg,rgba(255,255,255,.045) 1px,transparent 1px);
  background-size:56px 56px;
  -webkit-mask-image:radial-gradient(75% 100% at 45% 0,#000,transparent 80%);
  mask-image:radial-gradient(75% 100% at 45% 0,#000,transparent 80%);
}
.article-head::after{
  content:'';position:absolute;top:-170px;right:-120px;width:430px;height:430px;border-radius:50%;
  background:radial-gradient(circle,rgba(200,255,46,.16),transparent 68%);pointer-events:none;
}
.article-head > .container{position:relative;z-index:2;}
.breadcrumb{
  display:flex;align-items:center;gap:10px;font-size:13.5px;color:var(--text-3);
  margin-bottom:26px;overflow:hidden;white-space:nowrap;
}
.breadcrumb .sep{color:var(--text-3);opacity:.6;}
.breadcrumb a{color:var(--text-3);transition:color .18s;flex-shrink:0;}
.breadcrumb a:hover{color:var(--accent);}
.breadcrumb .crumb-current{
  color:var(--text-2);max-width:46ch;overflow:hidden;text-overflow:ellipsis;white-space:nowrap;
}
.head-grid{display:grid;grid-template-columns:minmax(0,1.35fr) minmax(0,.85fr);gap:52px;align-items:center;}
.page-title{
  font-size:clamp(2rem,4.4vw,3.2rem);font-weight:800;line-height:1.12;
  letter-spacing:-.02em;color:var(--text);margin:18px 0 18px;
}
.head-sub{font-size:16px;line-height:1.85;color:var(--text-2);max-width:56ch;}
.meta-list{display:flex;flex-wrap:wrap;gap:8px 18px;margin-top:24px;font-size:13.5px;color:var(--text-3);}
.meta-list li{display:flex;align-items:center;gap:7px;}
.meta-list li::before{content:'';width:5px;height:5px;border-radius:50%;background:var(--accent-2);opacity:.8;}
.meta-list li:first-child::before{display:none;}
.head-figure{
  border-radius:var(--radius);overflow:hidden;border:1px solid var(--line);
  box-shadow:var(--shadow);background:var(--bg-2);
}
.head-figure img{width:100%;height:100%;aspect-ratio:16/10;object-fit:cover;}

/* ============ 徽章 ============ */
.badge{
  display:inline-flex;align-items:center;gap:6px;padding:4px 12px;border-radius:999px;
  font-size:12.5px;font-weight:600;letter-spacing:.02em;line-height:1.7;
}
.badge-accent{background:rgba(200,255,46,.13);color:var(--accent);border:1px solid rgba(200,255,46,.3);}
.badge-orange{background:rgba(255,107,44,.14);color:#FF8B57;border:1px solid rgba(255,107,44,.32);}
.badge-muted{background:rgba(255,255,255,.05);color:var(--text-2);border:1px solid var(--line);}

/* ============ 正文布局 ============ */
.article-wrap{padding:56px 0 76px;}
.article-layout{display:grid;grid-template-columns:minmax(0,1fr) 320px;gap:56px;align-items:start;}
.article-body{max-width:820px;font-size:17px;line-height:1.85;color:var(--text-2);}
.article-body p{margin:0 0 22px;font-size:17px;line-height:1.85;}
.article-body h2{
  font-size:clamp(1.4rem,2.4vw,1.85rem);font-weight:700;line-height:1.35;color:var(--text);
  margin:52px 0 20px;padding-left:16px;border-left:4px solid var(--accent);scroll-margin-top:100px;
}
.article-body h3{
  font-size:1.22rem;font-weight:600;line-height:1.5;color:var(--text);
  margin:36px 0 14px;scroll-margin-top:100px;
}
.article-body h2:first-child,.article-body h3:first-child{margin-top:0;}
.article-body a{color:var(--accent);border-bottom:1px solid rgba(200,255,46,.4);transition:border-color .18s;}
.article-body a:hover{border-color:var(--accent);}
.article-body ul,.article-body ol{padding-left:22px;margin:0 0 22px;}
.article-body ul{list-style:disc;}
.article-body ol{list-style:decimal;}
.article-body li{margin:9px 0;line-height:1.8;}
.article-body li::marker{color:var(--accent-2);}
.article-body strong,.article-body b{color:var(--text);font-weight:600;}
.article-body img{border-radius:16px;border:1px solid var(--line);margin:28px 0;}
.article-body figure{margin:28px 0;}
.article-body figcaption{font-size:13.5px;color:var(--text-3);margin-top:10px;text-align:center;}
.article-body blockquote{
  margin:32px 0;padding:18px 24px;background:rgba(200,255,46,.06);
  border-left:3px solid var(--accent);border-radius:0 14px 14px 0;
}
.article-body blockquote p{color:var(--text);margin:0;font-size:16.5px;}
.article-body table{
  width:100%;border-collapse:collapse;font-size:15px;margin:28px 0;
  display:block;overflow-x:auto;white-space:nowrap;
}
.article-body th,.article-body td{border:1px solid var(--line);padding:11px 15px;text-align:left;}
.article-body th{background:rgba(255,255,255,.04);color:var(--text);font-weight:600;}
.article-body tr:nth-child(even) td{background:rgba(255,255,255,.015);}
.article-body code{
  font-family:ui-monospace,SFMono-Regular,Menlo,Consolas,monospace;font-size:.9em;
  background:rgba(255,255,255,.07);color:var(--accent);padding:2px 7px;border-radius:6px;
}
.article-body pre{
  background:#101317;border:1px solid var(--line);border-radius:14px;
  padding:18px 20px;overflow-x:auto;margin:26px 0;
}
.article-body pre code{background:none;padding:0;color:var(--text-2);font-size:14px;}
.article-body hr{border:0;border-top:1px solid var(--line);margin:44px 0;}

/* ============ 侧栏 ============ */
.article-side{position:sticky;top:96px;display:flex;flex-direction:column;gap:20px;}
.side-card{
  background:var(--bg-2);border:1px solid var(--line);border-radius:var(--radius);
  padding:22px;box-shadow:var(--shadow);
}
.side-card h3{
  font-size:15px;font-weight:700;color:var(--text);margin:0 0 14px;
  letter-spacing:.02em;display:flex;align-items:center;gap:8px;
}
.side-card h3::before{content:'';width:3px;height:14px;border-radius:2px;background:var(--accent);}
.toc-list{display:flex;flex-direction:column;gap:2px;max-height:46vh;overflow:auto;}
.toc-link{
  font-size:14px;color:var(--text-2);padding:7px 10px;border-radius:9px;
  border-left:2px solid transparent;transition:all .18s;line-height:1.55;
}
.toc-link:hover{color:var(--text);background:rgba(255,255,255,.045);border-left-color:var(--accent-2);}
.toc-link.toc-sub{padding-left:22px;font-size:13.5px;color:var(--text-3);}
.toc-empty{font-size:13.5px;color:var(--text-3);line-height:1.7;}
.side-links{display:flex;flex-direction:column;gap:8px;}
.side-links a{
  display:flex;align-items:center;justify-content:space-between;
  font-size:14px;color:var(--text-2);padding:10px 12px;border-radius:11px;
  border:1px solid var(--line);transition:all .18s;
}
.side-links a:hover{color:var(--text);border-color:rgba(200,255,46,.42);background:rgba(200,255,46,.05);transform:translateX(3px);}
.side-links a span{color:var(--accent);font-size:12px;}

/* ============ 空态 ============ */
.empty-state{
  max-width:820px;background:var(--bg-2);border:1px dashed var(--line-strong);
  border-radius:var(--radius);padding:52px 32px;text-align:center;
}
.empty-state h2{font-size:1.5rem;font-weight:700;color:var(--text);margin-bottom:14px;}
.empty-state p{font-size:15.5px;color:var(--text-2);max-width:46ch;margin:0 auto 26px;line-height:1.85;}

/* ============ 相关推荐 ============ */
.related{padding:8px 0 96px;}
.section-head{margin-bottom:32px;}
.section-head h2{font-size:clamp(1.5rem,2.6vw,2.1rem);font-weight:700;color:var(--text);letter-spacing:-.01em;}
.section-head p{font-size:15px;color:var(--text-3);margin-top:10px;}
.card-grid{display:grid;grid-template-columns:repeat(3,minmax(0,1fr));gap:24px;}
.news-card{
  display:flex;flex-direction:column;background:var(--bg-2);border:1px solid var(--line);
  border-radius:var(--radius);overflow:hidden;box-shadow:var(--shadow);
  transition:transform .24s ease,box-shadow .24s ease,border-color .24s ease;
}
.news-card:hover{transform:translateY(-4px);box-shadow:var(--shadow-hover);border-color:rgba(200,255,46,.4);}
.news-thumb{overflow:hidden;aspect-ratio:16/10;background:#0F1216;}
.news-thumb img{width:100%;height:100%;object-fit:cover;transition:transform .4s ease;}
.news-card:hover .news-thumb img{transform:scale(1.06);}
.news-body{padding:18px 20px 22px;display:flex;flex-direction:column;gap:11px;flex:1;}
.news-title{font-size:16.5px;font-weight:700;color:var(--text);line-height:1.55;}
.news-card:hover .news-title{color:var(--accent);}
.news-desc{font-size:14px;color:var(--text-2);line-height:1.75;flex:1;}
.news-foot{display:flex;align-items:center;justify-content:space-between;font-size:12.5px;color:var(--text-3);padding-top:4px;}
.news-foot .more{color:var(--accent);font-weight:600;}

/* ============ 浮动 CTA ============ */
.float-cta{
  position:fixed;right:28px;bottom:28px;z-index:60;
  display:inline-flex;align-items:center;gap:9px;padding:13px 24px;border-radius:999px;
  background:var(--accent);color:#0D0F12;font-weight:700;font-size:14.5px;
  box-shadow:0 14px 34px rgba(200,255,46,.22);
  transition:transform .2s ease,box-shadow .2s ease;
}
.float-cta:hover{transform:translateY(-3px);box-shadow:0 20px 46px rgba(200,255,46,.32);}
.float-cta .dot{width:7px;height:7px;border-radius:50%;background:#0D0F12;animation:pulse 2.2s infinite;}
@keyframes pulse{0%,100%{opacity:1;transform:scale(1);}50%{opacity:.45;transform:scale(.75);}}

/* ============ 页脚 ============ */
.site-footer{background:#0A0C0E;border-top:1px solid var(--line);padding:64px 0 28px;}
.footer-grid{display:grid;grid-template-columns:1.5fr 1fr 1fr 1fr;gap:40px;}
.footer-brand .brand{margin-bottom:16px;}
.footer-brand p{font-size:14px;color:var(--text-3);line-height:1.8;max-width:40ch;margin-bottom:22px;}
.footer-cta{display:flex;gap:10px;flex-wrap:wrap;}
.footer-col h4{font-size:14px;font-weight:700;color:var(--text);margin:0 0 16px;}
.footer-col a{display:block;font-size:14px;color:var(--text-3);padding:6px 0;transition:all .18s;}
.footer-col a:hover{color:var(--accent);transform:translateX(3px);}
.footer-bottom{
  display:flex;align-items:center;justify-content:space-between;gap:16px;flex-wrap:wrap;
  border-top:1px solid var(--line);margin-top:48px;padding-top:22px;
  font-size:13px;color:var(--text-3);
}
.to-top{color:var(--text-2);transition:color .18s;}
.to-top:hover{color:var(--accent);}

/* ============ 响应式 ============ */
@media (max-width:1280px){
  .container{padding:0 28px;}
  .article-layout{gap:44px;}
}
@media (max-width:1024px){
  .nav-links{
    position:fixed;top:72px;left:0;right:0;z-index:65;
    flex-direction:column;align-items:stretch;gap:4px;
    background:#0D0F12;border-bottom:1px solid var(--line);
    padding:14px 20px 22px;max-height:calc(100vh - 72px);overflow:auto;
    transform:translateY(-10px);opacity:0;pointer-events:none;
    transition:transform .22s ease,opacity .22s ease;
  }
  .nav-links.open{transform:translateY(0);opacity:1;pointer-events:auto;}
  .nav-link{padding:13px 10px;font-size:16px;border-radius:12px;}
  .nav-link::after{left:10px;right:auto;width:28px;}
  .nav-cta{display:none;}
  .menu-btn{display:flex;}
  .head-grid{grid-template-columns:1fr;gap:30px;}
  .article-layout{grid-template-columns:1fr;gap:40px;}
  .article-side{position:static;}
  .article-body{max-width:100%;}
  .card-grid{grid-template-columns:repeat(2,minmax(0,1fr));}
  .footer-grid{grid-template-columns:1fr 1fr;gap:32px;}
}
@media (max-width:768px){
  .container{padding:0 20px;}
  .brand-text{font-size:15.5px;}
  .brand-mark{width:34px;height:34px;border-radius:10px;font-size:13px;}
  .article-head{padding:34px 0 32px;}
  .article-wrap{padding:38px 0 56px;}
  .breadcrumb{font-size:12.5px;margin-bottom:18px;}
  .breadcrumb .crumb-current{max-width:16ch;}
  .page-title{font-size:clamp(1.7rem,6.6vw,2.2rem);}
  .head-sub{font-size:15px;}
  .article-body,.article-body p{font-size:16px;}
  .article-body h2{margin:40px 0 16px;padding-left:13px;}
  .related{padding:0 0 72px;}
  .footer-grid{grid-template-columns:1fr;gap:28px;}
  .site-footer{padding:48px 0 24px;}
  .footer-bottom{justify-content:flex-start;}
}
@media (max-width:640px){
  .card-grid{grid-template-columns:1fr;}
  .float-cta{left:16px;right:16px;bottom:14px;justify-content:center;border-radius:14px;padding:13px 18px;}
  .empty-state{padding:38px 22px;}
}

/* roulang page: category1 */
:root{
  --acid:#C8FF2E;
  --lava:#FF6B2C;
  --ink:#0D0F12;
  --coal:#15181D;
  --coal-2:#1B1F26;
  --paper:#F7F7F2;
  --tx:#F5F7F4;
  --tx-2:#A8B0A5;
  --tx-3:#6C746B;
  --ink-tx:#111411;
  --ink-tx-2:#4A5148;
  --line:rgba(255,255,255,.08);
  --line-2:rgba(255,255,255,.16);
  --ok:#3DDC97;
  --warn:#FFB020;
  --danger:#FF4D4F;
  --r-card:18px;
  --r-btn:12px;
  --r-pill:999px;
  --sh:0 12px 30px rgba(0,0,0,.28);
  --sh-h:0 20px 50px rgba(0,0,0,.38);
  --max:1240px;
}
*,*::before,*::after{box-sizing:border-box}
html{scroll-behavior:smooth;-webkit-text-size-adjust:100%}
body{
  margin:0;
  background:var(--ink);
  color:var(--tx);
  font-family:"PingFang SC","Microsoft YaHei","Noto Sans SC",system-ui,-apple-system,"Segoe UI",sans-serif;
  font-size:16.5px;
  line-height:1.8;
  -webkit-font-smoothing:antialiased;
}
img{max-width:100%;height:auto;display:block}
a{color:inherit;text-decoration:none}
button,input,select,textarea{font:inherit;color:inherit}
h1,h2,h3,h4{margin:0;line-height:1.2}
p{margin:0}
ul,ol{margin:0;padding:0;list-style:none}
time{font-variant-numeric:tabular-nums}

.container{width:100%;max-width:var(--max);margin:0 auto;padding:0 24px}
@media (min-width:768px){.container{padding:0 32px}}
@media (min-width:1280px){.container{padding:0 48px}}

/* ---------- 顶部信息条 ---------- */
.topbar{background:#0A0C0F;border-bottom:1px solid var(--line);font-size:13px;color:var(--tx-3)}
.topbar-inner{display:flex;align-items:center;justify-content:space-between;gap:16px;height:36px}
.topbar-left{letter-spacing:.02em;white-space:nowrap;overflow:hidden;text-overflow:ellipsis}
.topbar-right{display:flex;align-items:center;gap:14px;white-space:nowrap}
.topbar-right .online{display:inline-flex;align-items:center;gap:7px;color:var(--ok)}
.dot{width:7px;height:7px;border-radius:50%;background:var(--ok);box-shadow:0 0 0 4px rgba(61,220,151,.14)}
.topbar-right a{color:var(--tx-2);border-bottom:1px solid transparent;transition:.2s}
.topbar-right a:hover{color:var(--acid);border-bottom-color:var(--acid)}
@media (max-width:640px){.topbar-right .online{display:none}}

/* ---------- 导航 ---------- */
.site-header{
  position:sticky;top:0;z-index:60;
  background:rgba(13,15,18,.72);
  backdrop-filter:blur(14px);
  -webkit-backdrop-filter:blur(14px);
  border-bottom:1px solid var(--line);
  transition:background .25s ease,box-shadow .25s ease;
}
.site-header.is-scrolled{background:rgba(13,15,18,.96);box-shadow:0 10px 30px rgba(0,0,0,.35)}
.nav-inner{display:flex;align-items:center;justify-content:space-between;gap:20px;height:70px}
.brand{display:inline-flex;align-items:center;gap:10px;flex-shrink:0}
.brand-mark{
  width:34px;height:34px;border-radius:10px;flex:0 0 34px;
  background:var(--acid);color:#111411;
  display:inline-flex;align-items:center;justify-content:center;
  font-size:13px;font-weight:800;letter-spacing:.02em;
}
.brand-text{font-size:17px;font-weight:700;letter-spacing:-.01em;color:var(--tx)}
.brand-text em{font-style:normal;color:var(--acid)}
.nav-links{display:none}
@media (min-width:1024px){.nav-links{display:flex;align-items:center;gap:4px}}
.nav-link{
  position:relative;padding:8px 13px;border-radius:var(--r-pill);
  font-size:14.5px;color:var(--tx-2);transition:color .2s ease,background .2s ease;
}
.nav-link::after{
  content:"";position:absolute;left:13px;right:13px;bottom:4px;height:2px;border-radius:2px;
  background:var(--acid);transform:scaleX(0);transform-origin:left;transition:transform .25s ease;
}
.nav-link:hover{color:var(--tx);background:rgba(255,255,255,.05)}
.nav-link:hover::after{transform:scaleX(1)}
.nav-link.active{color:var(--acid)}
.nav-link.active::after{transform:scaleX(1)}
.nav-cta{display:none}
@media (min-width:768px){.nav-cta{display:inline-flex}}
.menu-btn{
  display:inline-flex;flex-direction:column;justify-content:center;gap:4px;
  width:44px;height:44px;padding:0 11px;cursor:pointer;
  background:rgba(255,255,255,.04);border:1px solid var(--line-2);border-radius:12px;
  transition:border-color .2s ease,background .2s ease;
}
.menu-btn span{display:block;height:2px;width:100%;border-radius:2px;background:var(--tx);transition:.2s}
.menu-btn:hover{border-color:var(--acid);background:rgba(200,255,46,.08)}
@media (min-width:1024px){.menu-btn{display:none}}

/* ---------- 按钮 ---------- */
.btn{
  display:inline-flex;align-items:center;justify-content:center;gap:8px;
  padding:11px 20px;border-radius:var(--r-btn);
  font-size:14.5px;font-weight:600;line-height:1.2;white-space:nowrap;
  border:1px solid transparent;cursor:pointer;
  transition:transform .15s ease,box-shadow .2s ease,background .2s ease,color .2s ease,border-color .2s ease;
}
.btn:active{transform:translateY(1px)}
.btn:focus-visible{outline:2px solid var(--acid);outline-offset:2px}
.btn-primary{background:var(--acid);color:#111411;box-shadow:0 8px 22px rgba(200,255,46,.16)}
.btn-primary:hover{transform:translateY(-2px);box-shadow:0 14px 34px rgba(200,255,46,.28)}
.btn-ghost{background:transparent;color:var(--tx);border-color:var(--line-2)}
.btn-ghost:hover{border-color:var(--acid);color:var(--acid);transform:translateY(-2px)}
.btn-plain{background:transparent;color:var(--tx-2);padding:11px 6px;text-decoration:underline;text-underline-offset:5px;text-decoration-thickness:1px}
.btn-plain:hover{color:var(--acid)}
.btn-sm{padding:8px 15px;font-size:13.5px}
.w-full{width:100%}

/* ---------- 徽章 ---------- */
.badge{
  display:inline-flex;align-items:center;gap:6px;
  padding:4px 11px;border-radius:var(--r-pill);
  font-size:12.5px;font-weight:600;letter-spacing:.02em;line-height:1.6;
}
.badge-acid{background:rgba(200,255,46,.13);color:var(--acid);border:1px solid rgba(200,255,46,.3)}
.badge-lava{background:rgba(255,107,44,.14);color:#FF9A6B;border:1px solid rgba(255,107,44,.32)}
.badge-mute{background:rgba(255,255,255,.06);color:var(--tx-2);border:1px solid var(--line)}
.badge-ok{background:rgba(61,220,151,.13);color:var(--ok);border:1px solid rgba(61,220,151,.3)}

/* ---------- Hero ---------- */
.hero{
  position:relative;overflow:hidden;
  padding:88px 0 72px;
  background:
    linear-gradient(180deg,rgba(13,15,18,.78) 0%,rgba(13,15,18,.9) 55%,rgba(13,15,18,.98) 100%),
    url('/assets/images/backpic/back-1.webp') center/cover no-repeat;
}
.hero::before{
  content:"";position:absolute;inset:0;pointer-events:none;
  background-image:linear-gradient(rgba(255,255,255,.045) 1px,transparent 1px),
                   linear-gradient(90deg,rgba(255,255,255,.045) 1px,transparent 1px);
  background-size:64px 64px;
  mask-image:radial-gradient(circle at 30% 20%,#000 0%,transparent 78%);
  -webkit-mask-image:radial-gradient(circle at 30% 20%,#000 0%,transparent 78%);
}
.hero-inner{position:relative;z-index:2;max-width:940px}
.crumbs{display:flex;flex-wrap:wrap;align-items:center;gap:8px;font-size:13px;color:var(--tx-3);margin-bottom:22px}
.crumbs a{color:var(--tx-2);transition:color .2s}
.crumbs a:hover{color:var(--acid)}
.crumbs .sep{color:var(--tx-3);opacity:.7}
.hero h1{
  font-size:clamp(2.2rem,5.4vw,3.7rem);
  font-weight:800;line-height:1.08;letter-spacing:-.02em;margin:16px 0 0;
}
.hero h1 em{font-style:normal;color:var(--acid)}
.hero-sub{margin-top:20px;max-width:720px;color:var(--tx-2);font-size:17px;line-height:1.85}
.hero-actions{display:flex;flex-wrap:wrap;gap:14px;margin-top:32px}
.hero-stats{
  display:grid;grid-template-columns:repeat(3,minmax(0,1fr));gap:14px;
  margin-top:44px;padding-top:28px;border-top:1px solid var(--line);
}
.hero-stat b{display:block;font-size:22px;font-weight:800;color:var(--acid);font-variant-numeric:tabular-nums;letter-spacing:-.01em}
.hero-stat span{display:block;font-size:13px;color:var(--tx-3);margin-top:4px}
@media (max-width:640px){
  .hero{padding:64px 0 56px}
  .hero-stats{grid-template-columns:1fr 1fr;gap:18px}
}

/* ---------- 锚点导航 ---------- */
.anchor-nav{
  position:sticky;top:70px;z-index:40;
  background:rgba(13,15,18,.9);border-bottom:1px solid var(--line);
  backdrop-filter:blur(10px);
}
.anchor-scroll{display:flex;gap:10px;overflow-x:auto;padding:12px 0;scrollbar-width:none}
.anchor-scroll::-webkit-scrollbar{display:none}
.anchor-scroll a{
  flex:0 0 auto;padding:7px 15px;border-radius:var(--r-pill);
  font-size:13.5px;color:var(--tx-2);border:1px solid var(--line);
  background:rgba(255,255,255,.03);transition:.2s;
}
.anchor-scroll a:hover{color:var(--acid);border-color:rgba(200,255,46,.45);background:rgba(200,255,46,.08)}

/* ---------- 板块 ---------- */
.section{padding:88px 0}
.section-tight{padding:64px 0}
@media (max-width:768px){.section{padding:60px 0}.section-tight{padding:46px 0}}
.sec-head{max-width:760px;margin-bottom:40px}
.sec-head h2{font-size:clamp(1.7rem,3.4vw,2.5rem);font-weight:700;letter-spacing:-.02em;margin-top:14px}
.sec-head p{margin-top:14px;color:var(--tx-2);font-size:16px}
.eyebrow{font-size:13px;letter-spacing:.16em;text-transform:uppercase;color:var(--lava);font-weight:600}

/* ---------- 置顶公告 ---------- */
.notice-bar{
  display:flex;flex-wrap:wrap;align-items:center;gap:16px;
  padding:20px 22px;border-radius:var(--r-card);
  background:linear-gradient(90deg,rgba(255,107,44,.14),rgba(255,107,44,.04));
  border:1px solid rgba(255,107,44,.32);
}
.notice-bar p{flex:1 1 320px;color:var(--tx);font-size:15.5px;line-height:1.75}
.notice-time{font-size:13px;color:var(--tx-3);font-variant-numeric:tabular-nums}
.status-grid{display:grid;grid-template-columns:1fr;gap:16px;margin-top:24px}
@media (min-width:768px){.status-grid{grid-template-columns:repeat(3,1fr)}}
.status-card{
  padding:22px;border-radius:var(--r-card);background:var(--coal);
  border:1px solid var(--line);box-shadow:var(--sh);
  transition:transform .25s ease,box-shadow .25s ease,border-color .25s ease;
}
.status-card:hover{transform:translateY(-4px);box-shadow:var(--sh-h);border-color:rgba(200,255,46,.4)}
.status-card .k{font-size:13px;color:var(--tx-3)}
.status-card .v{margin-top:10px;font-size:26px;font-weight:800;letter-spacing:-.02em;font-variant-numeric:tabular-nums;color:var(--tx)}
.status-card .d{margin-top:10px;font-size:14px;color:var(--tx-2);line-height:1.7}
.status-card .v.ok{color:var(--ok)}
.status-card .v.acid{color:var(--acid)}
.status-card .v.warn{color:var(--warn)}

/* ---------- 时间线 ---------- */
.timeline{position:relative;margin-top:8px;padding-left:26px}
.timeline::before{
  content:"";position:absolute;left:6px;top:8px;bottom:12px;width:2px;
  background:linear-gradient(180deg,rgba(200,255,46,.55),rgba(255,107,44,.28),rgba(255,255,255,.05));
  border-radius:2px;
}
.tl-item{position:relative;padding:0 0 30px}
.tl-item:last-child{padding-bottom:0}
.tl-item::before{
  content:"";position:absolute;left:-26px;top:8px;width:14px;height:14px;border-radius:50%;
  background:var(--ink);border:2px solid var(--acid);
  box-shadow:0 0 0 4px rgba(200,255,46,.12);
}
.tl-meta{display:flex;align-items:center;gap:12px;flex-wrap:wrap}
.tl-meta time{font-size:13px;color:var(--tx-3)}
.tl-item h3{margin-top:12px;font-size:1.2rem;font-weight:600}
.tl-item p{margin-top:8px;color:var(--tx-2);font-size:15.5px;line-height:1.8;max-width:820px}

/* ---------- 步骤卡 ---------- */
.steps-strip{display:flex;gap:18px;overflow-x:auto;padding:6px 4px 22px;scroll-snap-type:x mandatory}
.steps-strip::-webkit-scrollbar{height:6px}
.steps-strip::-webkit-scrollbar-thumb{background:rgba(255,255,255,.14);border-radius:99px}
.step-card{
  flex:0 0 280px;scroll-snap-align:start;
  padding:24px;border-radius:var(--r-card);
  background:var(--coal);border:1px solid var(--line);box-shadow:var(--sh);
  transition:transform .25s ease,border-color .25s ease,box-shadow .25s ease;
}
.step-card:hover{transform:translateY(-4px);border-color:rgba(255,107,44,.45);box-shadow:var(--sh-h)}
.step-no{
  font-family:"Inter","Space Grotesk",system-ui,sans-serif;
  font-size:13px;font-weight:700;letter-spacing:.14em;color:var(--lava);
}
.step-card h3{margin-top:14px;font-size:1.15rem;font-weight:600}
.step-card p{margin-top:10px;color:var(--tx-2);font-size:14.5px;line-height:1.75}
@media (min-width:1024px){.step-card{flex:0 0 300px}}

/* ---------- 卡片网格 ---------- */
.card-grid{display:grid;grid-template-columns:1fr;gap:22px}
@media (min-width:640px){.card-grid{grid-template-columns:repeat(2,1fr)}}
@media (min-width:1024px){.card-grid{grid-template-columns:repeat(3,1fr)}}
.card{
  display:flex;flex-direction:column;overflow:hidden;
  background:var(--coal);border:1px solid var(--line);
  border-radius:var(--r-card);box-shadow:var(--sh);
  transition:transform .25s ease,box-shadow .25s ease,border-color .25s ease;
}
.card:hover{transform:translateY(-4px);box-shadow:var(--sh-h);border-color:rgba(200,255,46,.38)}
.card-media{position:relative;overflow:hidden;aspect-ratio:16/10;background:var(--coal-2)}
.card-media img{width:100%;height:100%;object-fit:cover;transition:transform .45s ease}
.card:hover .card-media img{transform:scale(1.05)}
.card-media::after{content:"";position:absolute;inset:0;background:linear-gradient(180deg,rgba(13,15,18,0) 40%,rgba(13,15,18,.72));}
.card-body{padding:22px;display:flex;flex-direction:column;gap:12px;flex:1}
.card-body h3{font-size:1.15rem;font-weight:600;line-height:1.45}
.card-body p{color:var(--tx-2);font-size:14.5px;line-height:1.75}
.card-foot{margin-top:auto;display:flex;align-items:center;justify-content:space-between;gap:10px;font-size:13px;color:var(--tx-3)}

/* ---------- CTA 区块 ---------- */
.cta-band{
  position:relative;overflow:hidden;
  border-radius:22px;padding:48px 34px;
  background:linear-gradient(120deg,rgba(200,255,46,.1),rgba(255,107,44,.08)),var(--coal);
  border:1px solid rgba(200,255,46,.32);
}
.cta-band h2{font-size:clamp(1.6rem,3.2vw,2.3rem);font-weight:700;letter-spacing:-.02em;max-width:720px}
.cta-band p{margin-top:16px;color:var(--tx-2);max-width:660px}
.cta-actions{display:flex;flex-wrap:wrap;gap:14px;margin-top:28px}
@media (max-width:640px){.cta-band{padding:34px 22px}}

/* ---------- FAQ ---------- */
.faq-wrap{display:grid;grid-template-columns:1fr;gap:32px}
@media (min-width:1024px){.faq-wrap{grid-template-columns:0.85fr 1.15fr;gap:56px;align-items:start}}
.faq-side{position:relative}
@media (min-width:1024px){.faq-side{position:sticky;top:150px}}
.faq-side h2{font-size:clamp(1.6rem,3.2vw,2.3rem);font-weight:700;letter-spacing:-.02em;margin-top:14px}
.faq-side p{margin-top:16px;color:var(--tx-2)}
.faq-list{display:flex;flex-direction:column;gap:14px}
.faq-item{
  background:var(--coal);border:1px solid var(--line);border-radius:var(--r-card);
  overflow:hidden;transition:border-color .25s ease,box-shadow .25s ease;
}
.faq-item[open]{border-color:rgba(200,255,46,.42);box-shadow:var(--sh)}
.faq-item summary{
  list-style:none;cursor:pointer;display:flex;align-items:flex-start;justify-content:space-between;gap:18px;
  padding:20px 22px;font-weight:600;font-size:16px;line-height:1.6;
}
.faq-item summary::-webkit-details-marker{display:none}
.faq-plus{
  flex:0 0 26px;width:26px;height:26px;border-radius:50%;
  border:1px solid var(--line-2);color:var(--acid);
  display:inline-flex;align-items:center;justify-content:center;
  font-size:15px;line-height:1;transition:transform .3s ease,border-color .25s ease;
}
.faq-item[open] .faq-plus{transform:rotate(180deg);border-color:var(--acid)}
.faq-item .faq-answer{padding:0 22px 22px;color:var(--tx-2);font-size:15px;line-height:1.8}

/* ---------- 页脚 ---------- */
.site-footer{background:#0A0C0F;border-top:1px solid var(--line);padding:64px 0 28px;margin-top:20px}
.footer-grid{display:grid;grid-template-columns:1fr;gap:36px}
@media (min-width:768px){.footer-grid{grid-template-columns:repeat(2,1fr)}}
@media (min-width:1024px){.footer-grid{grid-template-columns:1.6fr 1fr 1fr 1fr;gap:40px}}
.footer-brand p{margin-top:18px;color:var(--tx-2);font-size:14.5px;max-width:380px;line-height:1.8}
.footer-cta{display:flex;flex-wrap:wrap;gap:12px;margin-top:22px}
.footer-col h4{font-size:14px;font-weight:700;color:var(--tx);letter-spacing:.04em}
.footer-col a{display:block;margin-top:12px;font-size:14.5px;color:var(--tx-2);transition:color .2s ease,transform .2s ease}
.footer-col a:hover{color:var(--acid);transform:translateX(3px)}
.footer-bottom{
  margin-top:48px;padding-top:22px;border-top:1px solid var(--line);
  display:flex;flex-wrap:wrap;gap:12px 24px;align-items:center;justify-content:space-between;
  font-size:13px;color:var(--tx-3);
}
.to-top{color:var(--tx-2);transition:color .2s}
.to-top:hover{color:var(--acid)}

/* ---------- 浮动 CTA ---------- */
.float-cta{
  position:fixed;right:24px;bottom:24px;z-index:55;
  display:flex;align-items:center;gap:12px;
  padding:10px 12px 10px 18px;border-radius:var(--r-pill);
  background:rgba(21,24,29,.94);border:1px solid var(--line-2);box-shadow:var(--sh);
  opacity:0;transform:translateY(14px);pointer-events:none;
  transition:opacity .3s ease,transform .3s ease;
}
.float-cta.show{opacity:1;transform:none;pointer-events:auto}
.float-cta.pulse{animation:ctaPulse 1s ease}
.float-text{font-size:13.5px;color:var(--tx-2);white-space:nowrap}
.float-close{
  width:24px;height:24px;border-radius:50%;border:1px solid var(--line);
  background:transparent;color:var(--tx-3);cursor:pointer;line-height:1;
  display:inline-flex;align-items:center;justify-content:center;font-size:14px;
  transition:.2s;
}
.float-close:hover{color:var(--acid);border-color:var(--acid)}
@keyframes ctaPulse{
  0%{box-shadow:0 0 0 0 rgba(200,255,46,.35)}
  100%{box-shadow:0 0 0 18px rgba(200,255,46,0)}
}
@media (max-width:640px){
  .float-cta{left:12px;right:12px;bottom:12px;justify-content:space-between;border-radius:16px;padding:10px 12px 10px 16px}
  .float-text{white-space:normal;font-size:13px}
}

/* ---------- 移动端抽屉 ---------- */
.mobile-nav{position:fixed;inset:0;z-index:80;display:none}
.mobile-nav.open{display:block}
.mobile-mask{position:absolute;inset:0;background:rgba(5,6,8,.66);backdrop-filter:blur(3px)}
.mobile-panel{
  position:absolute;top:0;right:0;bottom:0;width:min(340px,86vw);
  background:var(--coal);border-left:1px solid var(--line);
  padding:22px;display:flex;flex-direction:column;gap:22px;
  transform:translateX(100%);transition:transform .3s ease;
}
.mobile-nav.open .mobile-panel{transform:translateX(0)}
.mobile-head{display:flex;align-items:center;justify-content:space-between;gap:12px}
.mobile-close{
  width:38px;height:38px;border-radius:12px;border:1px solid var(--line-2);
  background:transparent;color:var(--tx);font-size:20px;line-height:1;cursor:pointer;
  transition:.2s;
}
.mobile-close:hover{border-color:var(--acid);color:var(--acid)}
.mobile-links{display:flex;flex-direction:column;gap:6px;border-top:1px solid var(--line);padding-top:18px}
.mobile-links a{
  padding:12px 14px;border-radius:12px;font-size:15px;color:var(--tx-2);
  border:1px solid transparent;transition:.2s;
}
.mobile-links a:hover{background:rgba(255,255,255,.05);color:var(--tx)}
.mobile-links a.active{color:var(--acid);background:rgba(200,255,46,.1);border-color:rgba(200,255,46,.32)}
.mobile-foot{margin-top:auto;display:flex;flex-direction:column;gap:12px;border-top:1px solid var(--line);padding-top:18px;font-size:13px;color:var(--tx-3)}

/* ---------- 通用工具 ---------- */
.divider{height:1px;background:var(--line);border:0;margin:0}
.muted{color:var(--tx-2)}
.tnum{font-variant-numeric:tabular-nums}
.reveal{opacity:0;transform:translateY(18px);transition:opacity .45s ease,transform .45s ease}
.reveal.in{opacity:1;transform:none}
@media (prefers-reduced-motion:reduce){
  .reveal{opacity:1;transform:none;transition:none}
  html{scroll-behavior:auto}
}

/* roulang page: category2 */
:root{
  --lime:#C8FF2E;
  --lime-dim:rgba(200,255,46,.14);
  --orange:#FF6B2C;
  --orange-dim:rgba(255,107,44,.14);
  --bg:#0D0F12;
  --bg-alt:#101317;
  --panel:#15181D;
  --panel-2:#1B1F25;
  --paper:#F7F7F2;
  --text:#F5F7F4;
  --muted:#A8B0A5;
  --faint:#6C746B;
  --line:rgba(255,255,255,.08);
  --line-strong:rgba(255,255,255,.16);
  --r-card:18px;
  --r-btn:12px;
  --r-img:16px;
  --shadow:0 12px 30px rgba(0,0,0,.28);
  --shadow-hover:0 20px 50px rgba(0,0,0,.38);
  --maxw:1240px;
}
*,*::before,*::after{box-sizing:border-box}
html{scroll-behavior:smooth}
body{
  margin:0;background:var(--bg);color:var(--text);
  font-family:"PingFang SC","Microsoft YaHei","Noto Sans SC","Helvetica Neue",Arial,sans-serif;
  font-size:16px;line-height:1.8;-webkit-font-smoothing:antialiased;
}
img{max-width:100%;display:block}
a{color:inherit;text-decoration:none}
button{font-family:inherit;cursor:pointer;border:none;background:none;color:inherit}
h1,h2,h3,h4{margin:0;line-height:1.25;letter-spacing:-.01em}
p{margin:0}
ol,ul{margin:0;padding:0}
::selection{background:var(--lime);color:#0D0F12}

.container{width:100%;max-width:var(--maxw);margin:0 auto;padding:0 32px}
@media (max-width:768px){.container{padding:0 20px}}

/* ---------- header / nav ---------- */
.site-header{
  position:sticky;top:0;z-index:80;
  background:rgba(13,15,18,.82);
  backdrop-filter:blur(14px);
  -webkit-backdrop-filter:blur(14px);
  border-bottom:1px solid transparent;
  transition:background .25s ease,border-color .25s ease;
}
.site-header.is-stuck{background:rgba(13,15,18,.96);border-bottom-color:var(--line)}
.nav-inner{display:flex;align-items:center;gap:26px;height:72px}
.brand{display:flex;align-items:center;gap:11px;flex-shrink:0}
.brand-mark{
  width:38px;height:38px;border-radius:11px;background:var(--lime);color:#0D0F12;
  font-weight:800;font-size:14px;display:grid;place-items:center;letter-spacing:.02em;
}
.brand-text{font-weight:700;font-size:17px;letter-spacing:-.01em;white-space:nowrap}
.brand-text em{font-style:normal;color:var(--lime)}
.nav-links{display:flex;align-items:center;gap:26px;margin-left:auto}
.nav-link{position:relative;color:var(--muted);font-size:15px;padding:6px 0;transition:color .2s ease;white-space:nowrap}
.nav-link::after{
  content:"";position:absolute;left:0;bottom:0;height:2px;width:0;
  background:var(--lime);border-radius:2px;transition:width .25s ease;
}
.nav-link:hover{color:var(--text)}
.nav-link:hover::after{width:100%}
.nav-link.active{color:var(--text)}
.nav-link.active::after{width:100%}
.nav-cta{margin-left:8px}
.menu-btn{
  display:none;width:44px;height:44px;border-radius:12px;border:1px solid var(--line);
  flex-direction:column;align-items:center;justify-content:center;gap:5px;margin-left:auto;
  transition:border-color .2s ease;
}
.menu-btn:hover{border-color:rgba(200,255,46,.5)}
.menu-btn span{display:block;width:18px;height:2px;background:var(--text);border-radius:2px;transition:transform .25s ease,opacity .25s ease}
.site-header.nav-open .menu-btn span:nth-child(1){transform:translateY(7px) rotate(45deg)}
.site-header.nav-open .menu-btn span:nth-child(2){opacity:0}
.site-header.nav-open .menu-btn span:nth-child(3){transform:translateY(-7px) rotate(-45deg)}

@media (max-width:1180px){
  .nav-links{gap:18px}
  .nav-link{font-size:14px}
}
@media (max-width:1024px){
  .nav-links{
    position:fixed;top:72px;left:0;right:0;
    flex-direction:column;align-items:stretch;gap:0;
    background:#0F1216;padding:8px 20px 24px;
    border-bottom:1px solid var(--line);
    opacity:0;transform:translateY(-12px);pointer-events:none;
    transition:opacity .25s ease,transform .25s ease;
    max-height:calc(100vh - 72px);overflow:auto;margin-left:0;
  }
  .site-header.nav-open .nav-links{opacity:1;transform:none;pointer-events:auto}
  .nav-link{padding:15px 2px;border-bottom:1px solid var(--line);font-size:16px}
  .nav-link::after{display:none}
  .nav-link.active{color:var(--lime)}
  .menu-btn{display:flex}
  .nav-cta{margin-left:auto;padding:9px 16px;font-size:14px}
}
@media (max-width:640px){
  .nav-cta{display:none}
  .nav-inner{height:64px}
  .nav-links{top:64px}
  .brand-text{font-size:15px}
  .brand-text em{display:none}
}

/* ---------- buttons / badges ---------- */
.btn{
  display:inline-flex;align-items:center;justify-content:center;gap:8px;
  border-radius:var(--r-btn);padding:12px 22px;font-size:15px;font-weight:600;
  border:1px solid transparent;white-space:nowrap;
  transition:transform .18s ease,background .2s ease,box-shadow .2s ease,color .2s ease,border-color .2s ease;
}
.btn:active{transform:translateY(1px)}
.btn:focus-visible{outline:2px solid var(--lime);outline-offset:2px}
.btn-primary{background:var(--lime);color:#0D0F12;box-shadow:0 10px 24px rgba(200,255,46,.18)}
.btn-primary:hover{background:#d8ff62;transform:translateY(-2px);box-shadow:0 16px 34px rgba(200,255,46,.26)}
.btn-ghost{background:transparent;border-color:rgba(200,255,46,.45);color:var(--lime)}
.btn-ghost:hover{border-color:var(--lime);background:var(--lime-dim);transform:translateY(-2px)}
.btn-plain{background:transparent;border-color:var(--line-strong);color:var(--text)}
.btn-plain:hover{border-color:var(--lime);color:var(--lime);transform:translateY(-2px)}

.badge{
  display:inline-flex;align-items:center;gap:6px;font-size:12px;font-weight:600;
  line-height:1;padding:7px 12px;border-radius:999px;letter-spacing:.02em;
}
.badge-lime{background:var(--lime-dim);color:var(--lime);border:1px solid rgba(200,255,46,.3)}
.badge-orange{background:var(--orange-dim);color:#FF9066;border:1px solid rgba(255,107,44,.32)}
.badge-line{background:rgba(255,255,255,.05);color:var(--muted);border:1px solid var(--line)}

/* ---------- hero ---------- */
.cat-hero{position:relative;overflow:hidden;padding:64px 0 88px;border-bottom:1px solid var(--line)}
.cat-hero::before{
  content:"";position:absolute;inset:0;
  background-image:url("/assets/images/backpic/back-2.webp");
  background-size:cover;background-position:center;
  opacity:.2;
}
.cat-hero::after{
  content:"";position:absolute;inset:0;
  background-image:linear-gradient(rgba(200,255,46,.045) 1px,transparent 1px),
                   linear-gradient(90deg,rgba(200,255,46,.045) 1px,transparent 1px);
  background-size:64px 64px;
  mask-image:radial-gradient(circle at 70% 20%,#000 0%,transparent 72%);
  -webkit-mask-image:radial-gradient(circle at 70% 20%,#000 0%,transparent 72%);
}
.cat-hero > .container{position:relative;z-index:2}
.crumbs{display:flex;align-items:center;gap:9px;font-size:13px;color:var(--faint)}
.crumbs a{color:var(--muted);transition:color .2s ease}
.crumbs a:hover{color:var(--lime)}
.hero-title{
  font-size:clamp(2.1rem,4.6vw,3.6rem);font-weight:800;line-height:1.1;letter-spacing:-.02em;
}
.hero-sub{color:var(--muted);font-size:17px;line-height:1.85;max-width:620px}
.hero-visual{position:relative;border-radius:var(--r-img);overflow:hidden;border:1px solid var(--line);box-shadow:var(--shadow)}
.hero-visual img{width:100%;height:340px;object-fit:cover}
.hero-float{
  position:absolute;left:18px;bottom:18px;right:18px;
  display:flex;align-items:center;gap:12px;
  background:rgba(13,15,18,.86);border:1px solid var(--line);border-radius:14px;
  padding:14px 18px;backdrop-filter:blur(10px);
}
.hero-float strong{display:block;font-size:15px;font-weight:700}
.hero-float em{display:block;font-style:normal;font-size:12.5px;color:var(--muted)}
.dot{width:9px;height:9px;border-radius:50%;background:var(--lime);box-shadow:0 0 0 5px rgba(200,255,46,.16);flex-shrink:0}
.hero-metrics{display:flex;flex-wrap:wrap;gap:34px;margin-top:38px;padding-top:26px;border-top:1px solid var(--line)}
.hero-metrics div strong{display:block;font-size:22px;font-weight:800;color:var(--lime);font-variant-numeric:tabular-nums}
.hero-metrics div span{font-size:13px;color:var(--faint)}
@media (max-width:768px){
  .cat-hero{padding:44px 0 60px}
  .hero-visual img{height:230px}
  .hero-metrics{gap:22px}
}

/* ---------- sections ---------- */
.section{padding:96px 0}
.section-alt{background:var(--bg-alt);border-top:1px solid var(--line);border-bottom:1px solid var(--line)}
.section-head{max-width:760px}
.eyebrow{
  font-size:13px;font-weight:700;letter-spacing:.16em;color:var(--lime);
  text-transform:uppercase;margin-bottom:14px;
}
.section-title{font-size:clamp(1.7rem,3.2vw,2.6rem);font-weight:700;letter-spacing:-.02em}
.section-sub{color:var(--muted);font-size:16px;line-height:1.85;margin-top:16px}
@media (max-width:768px){.section{padding:64px 0}}

/* ---------- magazine grid ---------- */
.mag-grid{display:grid;grid-template-columns:1.45fr 1fr;grid-template-rows:auto auto;gap:24px;margin-top:46px}
.card{
  background:var(--panel);border:1px solid var(--line);border-radius:var(--r-card);
  overflow:hidden;box-shadow:var(--shadow);display:flex;flex-direction:column;
  transition:transform .3s ease,box-shadow .3s ease,border-color .3s ease;
}
.card:hover{transform:translateY(-4px);box-shadow:var(--shadow-hover);border-color:rgba(200,255,46,.4)}
.card-media{overflow:hidden;position:relative;background:#0B0D10}
.card-media img{width:100%;height:100%;object-fit:cover;transition:transform .5s ease}
.card:hover .card-media img{transform:scale(1.04)}
.card-feature{grid-row:span 2}
.card-feature .card-media{flex:1;min-height:260px}
.card-feature .card-media img{height:100%;min-height:260px}
.card-side{flex-direction:row;align-items:stretch}
.card-side .card-media{width:38%;min-width:132px;flex-shrink:0}
.card-body{padding:24px}
.card-side .card-body{padding:20px 22px}
.card-title{font-size:20px;font-weight:700;line-height:1.45;margin-top:14px}
.card-side .card-title{font-size:16.5px;margin-top:10px}
.card-text{color:var(--muted);font-size:14.5px;line-height:1.8;margin-top:10px}
.card-meta{margin-top:18px;display:flex;align-items:center;gap:12px;font-size:13px;color:var(--faint)}
@media (max-width:960px){
  .mag-grid{grid-template-columns:1fr;gap:20px}
  .card-feature{grid-row:auto}
  .card-feature .card-media, .card-feature .card-media img{min-height:210px}
}
@media (max-width:560px){
  .card-side{flex-direction:column}
  .card-side .card-media{width:100%;height:158px}
}

/* ---------- timeline ---------- */
.timeline{list-style:none;margin:46px 0 0;position:relative}
.timeline::before{content:"";position:absolute;left:7px;top:14px;bottom:14px;width:1px;background:var(--line-strong)}
.timeline-item{position:relative;padding:0 0 30px 36px;display:flex;flex-wrap:wrap;align-items:baseline;gap:14px}
.timeline-item:last-child{padding-bottom:0}
.timeline-item::before{
  content:"";position:absolute;left:0;top:11px;width:15px;height:15px;border-radius:50%;
  background:var(--bg);border:2px solid var(--orange);
}
.timeline-time{font-size:13px;font-weight:700;color:var(--orange);letter-spacing:.06em;font-variant-numeric:tabular-nums}
.timeline-body{width:100%}
.timeline-body h3{font-size:18px;font-weight:700;margin-bottom:8px}
.timeline-body p{color:var(--muted);font-size:15px;line-height:1.85}

/* ---------- stat strip ---------- */
.stat-strip{
  display:grid;grid-template-columns:repeat(4,1fr);gap:1px;
  background:var(--line);border:1px solid var(--line);border-radius:var(--r-card);
  overflow:hidden;margin-top:44px;
}
.stat{background:var(--panel);padding:30px 24px}
.stat strong{display:block;font-size:34px;font-weight:800;color:var(--lime);font-variant-numeric:tabular-nums;line-height:1.1}
.stat span{display:block;margin-top:8px;font-size:13.5px;color:var(--muted)}
@media (max-width:768px){
  .stat-strip{grid-template-columns:1fr 1fr}
  .stat{padding:22px 18px}
  .stat strong{font-size:26px}
}

/* ---------- rows ---------- */
.sticky-head{position:sticky;top:110px;align-self:start}
.rows{margin-top:10px;display:flex;flex-direction:column}
.row-item{
  display:grid;grid-template-columns:52px 1fr 128px;gap:22px;align-items:center;
  padding:28px 0;border-top:1px solid var(--line);transition:background .25s ease;
}
.row-item:last-child{border-bottom:1px solid var(--line)}
.row-index{font-size:14px;font-weight:800;color:var(--faint);letter-spacing:.1em;font-variant-numeric:tabular-nums}
.row-body h3{font-size:19px;font-weight:700;margin:12px 0 8px}
.row-body p{color:var(--muted);font-size:15px;line-height:1.85}
.row-thumb{width:128px;height:84px;object-fit:cover;border-radius:12px;border:1px solid var(--line)}
@media (max-width:900px){
  .sticky-head{position:static}
  .row-item{grid-template-columns:44px 1fr;gap:16px}
  .row-thumb{display:none}
}
@media (max-width:640px){
  .row-item{grid-template-columns:1fr;padding:24px 0}
  .row-index{display:none}
}

/* ---------- paper (浅色) ---------- */
.paper{background:var(--paper);color:#111411}
.paper .section-title{color:#111411}
.paper .section-sub{color:#4A5148}
.paper .eyebrow{color:#C24A12}
.paper .lead{color:#4A5148}

/* ---------- FAQ ---------- */
.faq-list{margin-top:40px}
.faq-item{
  border:1px solid var(--line);border-radius:14px;background:var(--panel);
  margin-bottom:12px;overflow:hidden;
}
.faq-item summary{
  list-style:none;cursor:pointer;padding:20px 22px;display:flex;align-items:center;
  justify-content:space-between;gap:18px;font-size:16.5px;font-weight:600;
  transition:color .2s ease;
}
.faq-item summary::-webkit-details-marker{display:none}
.faq-item summary::after{
  content:"+";font-size:22px;line-height:1;color:var(--lime);
  transition:transform .28s ease;flex-shrink:0;
}
.faq-item[open] summary::after{transform:rotate(135deg)}
.faq-item[open] summary{color:var(--lime)}
.faq-body{padding:0 22px 22px;color:var(--muted);font-size:15px;line-height:1.9}
.paper .faq-item{background:#FFFFFF;border-color:rgba(17,20,17,.12)}
.paper .faq-item summary{color:#111411}
.paper .faq-item summary::after{color:#C24A12}
.paper .faq-item[open] summary{color:#1D2A00}
.paper .faq-body{color:#4A5148}
.paper .faq-item:focus-within{outline:2px solid rgba(200,255,46,.9);outline-offset:2px}

/* ---------- CTA band ---------- */
.cta-band{position:relative;overflow:hidden;background:var(--bg-alt);border-top:1px solid var(--line);padding:84px 0}
.cta-band::before{
  content:"";position:absolute;width:620px;height:620px;right:-180px;top:-260px;border-radius:50%;
  background:radial-gradient(circle,rgba(200,255,46,.14) 0%,transparent 68%);
}
.cta-inner{position:relative;display:flex;align-items:center;justify-content:space-between;gap:40px;flex-wrap:wrap}
.cta-inner h2{font-size:clamp(1.6rem,3vw,2.3rem);font-weight:700;max-width:640px}
.cta-inner p{color:var(--muted);margin-top:14px;max-width:620px;font-size:16px}
.cta-actions{display:flex;gap:14px;flex-wrap:wrap}
@media (max-width:768px){.cta-band{padding:60px 0}}

/* ---------- floating cta ---------- */
.float-cta{
  position:fixed;right:28px;bottom:28px;z-index:90;
  display:inline-flex;align-items:center;gap:9px;
  padding:14px 24px;border-radius:999px;background:var(--lime);color:#0D0F12;
  font-weight:700;font-size:15px;
  box-shadow:0 16px 38px rgba(200,255,46,.24);
  opacity:0;transform:translateY(16px);pointer-events:none;
  transition:opacity .3s ease,transform .3s ease,box-shadow .25s ease;
}
.float-cta.is-on{opacity:1;transform:none;pointer-events:auto}
.float-cta:hover{box-shadow:0 20px 46px rgba(200,255,46,.34);transform:translateY(-2px)}
.float-cta:focus-visible{outline:2px solid #F7F7F2;outline-offset:3px}
@media (max-width:640px){
  .float-cta{left:16px;right:16px;bottom:16px;justify-content:center;border-radius:14px}
}

/* ---------- footer ---------- */
.site-footer{background:#0A0C0E;border-top:1px solid var(--line);padding:72px 0 28px}
.footer-grid{
  display:grid;grid-template-columns:1.7fr 1fr 1fr 1fr;gap:40px;
  padding-bottom:44px;border-bottom:1px solid var(--line);
}
.footer-brand p{color:var(--muted);font-size:14.5px;line-height:1.9;margin:18px 0 22px;max-width:380px}
.footer-cta{display:flex;gap:12px;flex-wrap:wrap}
.footer-col h4{font-size:14px;font-weight:700;color:var(--text);margin-bottom:16px;letter-spacing:.05em}
.footer-col a{display:block;color:var(--muted);font-size:14px;padding:6px 0;transition:color .2s ease,transform .2s ease}
.footer-col a:hover{color:var(--lime);transform:translateX(3px)}
.footer-bottom{
  display:flex;justify-content:space-between;align-items:center;gap:16px;flex-wrap:wrap;
  padding-top:24px;color:var(--faint);font-size:13px;
}
.to-top{color:var(--muted);transition:color .2s ease}
.to-top:hover{color:var(--lime)}
@media (max-width:900px){.footer-grid{grid-template-columns:1fr 1fr;gap:32px}}
@media (max-width:560px){.footer-grid{grid-template-columns:1fr}}

/* ---------- reveal ---------- */
.reveal{opacity:0;transform:translateY(18px);transition:opacity .45s ease,transform .45s ease}
.reveal.is-in{opacity:1;transform:none}
@media (prefers-reduced-motion:reduce){
  .reveal{opacity:1;transform:none;transition:none}
  html{scroll-behavior:auto}
}

/* roulang page: category3 */
:root{
    --lime:#C8FF2E;
    --orange:#FF6B2C;
    --bg:#0D0F12;
    --panel:#15181D;
    --panel-2:#1B1F26;
    --paper:#F7F7F2;
    --text:#F5F7F4;
    --muted:#A8B0A5;
    --faint:#6C746B;
    --line:rgba(255,255,255,.08);
    --line-strong:rgba(255,255,255,.16);
    --ok:#3DDC97;
    --warn:#FFB020;
    --danger:#FF4D4F;
    --radius:18px;
    --radius-sm:12px;
    --shadow:0 12px 30px rgba(0,0,0,.28);
    --shadow-hover:0 20px 50px rgba(0,0,0,.38);
    --max:1240px;
  }
  *{box-sizing:border-box}
  html{scroll-behavior:smooth;scroll-padding-top:110px}
  body{
    margin:0;
    background:var(--bg);
    color:var(--text);
    font-family:"PingFang SC","Microsoft YaHei","Noto Sans SC","Helvetica Neue",sans-serif;
    font-size:16.5px;
    line-height:1.8;
    -webkit-font-smoothing:antialiased;
    text-rendering:optimizeLegibility;
  }
  img{max-width:100%;display:block}
  a{color:inherit;text-decoration:none}
  button{font-family:inherit}
  h1,h2,h3,h4{margin:0;letter-spacing:-.02em;line-height:1.15}
  p{margin:0}
  ul,ol{margin:0;padding-left:1.1em}
  .container{width:100%;max-width:var(--max);margin:0 auto;padding:0 32px}
  .num{font-variant-numeric:tabular-nums;font-feature-settings:"tnum"}

  /* ===== 顶部信息条 ===== */
  .site-header{
    position:sticky;top:0;z-index:80;
    background:rgba(13,15,18,.9);
    backdrop-filter:blur(14px);
    -webkit-backdrop-filter:blur(14px);
    border-bottom:1px solid var(--line);
  }
  .topbar{
    background:#0A0C0E;
    border-bottom:1px solid var(--line);
    font-size:13px;
    color:var(--muted);
    max-height:40px;
    overflow:hidden;
    transition:max-height .28s ease, opacity .22s ease;
  }
  .site-header.scrolled .topbar{max-height:0;opacity:0}
  .topbar-inner{display:flex;align-items:center;justify-content:space-between;gap:16px;height:36px}
  .topbar-note{display:inline-flex;align-items:center;gap:8px;white-space:nowrap;overflow:hidden;text-overflow:ellipsis}
  .topbar-dot{width:6px;height:6px;border-radius:999px;background:var(--ok);box-shadow:0 0 0 4px rgba(61,220,151,.14);flex:none}
  .topbar-link{color:var(--lime);white-space:nowrap;transition:opacity .18s}
  .topbar-link:hover{opacity:.78;text-decoration:underline}

  /* ===== 主导航 ===== */
  .nav-inner{display:flex;align-items:center;gap:22px;height:72px}
  .brand{display:inline-flex;align-items:center;gap:10px;font-weight:800;color:var(--text);flex:none}
  .brand-mark{
    display:grid;place-items:center;width:38px;height:38px;border-radius:12px;
    background:var(--lime);color:#0D0F12;font-size:15px;font-weight:800;letter-spacing:-.02em;
  }
  .brand-text{font-size:17px;letter-spacing:-.01em;white-space:nowrap}
  .brand-text em{font-style:normal;color:var(--lime)}
  .nav-links{display:flex;align-items:center;gap:2px;margin-left:auto}
  .nav-link{
    position:relative;padding:9px 14px;border-radius:999px;font-size:15px;color:var(--muted);
    transition:color .18s ease, background .18s ease;white-space:nowrap;
  }
  .nav-link::after{
    content:"";position:absolute;left:14px;right:14px;bottom:5px;height:2px;border-radius:2px;
    background:var(--lime);transform:scaleX(0);transform-origin:left;transition:transform .24s ease;
  }
  .nav-link:hover{color:var(--text);background:rgba(255,255,255,.05)}
  .nav-link:hover::after{transform:scaleX(1)}
  .nav-link.active{color:var(--lime);background:rgba(200,255,46,.08)}
  .nav-link.active::after{transform:scaleX(1)}
  .nav-cta{height:40px;padding:0 18px;font-size:14px;flex:none}
  .menu-btn{
    display:none;width:44px;height:44px;border-radius:12px;border:1px solid var(--line-strong);
    background:transparent;cursor:pointer;padding:0;place-items:center;
  }
  .menu-btn span{display:block;width:18px;height:2px;background:var(--text);margin:3px auto;border-radius:2px;transition:transform .2s,opacity .2s}

  /* ===== 按钮 ===== */
  .btn{
    display:inline-flex;align-items:center;justify-content:center;gap:8px;
    height:46px;padding:0 22px;border-radius:var(--radius-sm);
    font-size:15px;font-weight:600;line-height:1;border:1px solid transparent;cursor:pointer;
    transition:transform .18s ease, box-shadow .18s ease, background .18s ease, color .18s ease, border-color .18s ease;
  }
  .btn:active{transform:translateY(1px)}
  .btn:focus-visible{outline:2px solid var(--lime);outline-offset:2px}
  .btn-primary{background:var(--lime);color:#0D0F12}
  .btn-primary:hover{transform:translateY(-2px);box-shadow:0 0 0 1px rgba(200,255,46,.5),0 14px 30px rgba(200,255,46,.16)}
  .btn-outline{border-color:rgba(200,255,46,.42);color:var(--lime);background:transparent}
  .btn-outline:hover{background:rgba(200,255,46,.1);transform:translateY(-2px)}
  .btn-plain{color:var(--muted);padding:0 4px;height:auto;background:none}
  .btn-plain:hover{color:var(--lime);text-decoration:underline}
  .btn-sm{height:40px;padding:0 16px;font-size:14px}

  /* ===== 徽章 / 标签 ===== */
  .badge{
    display:inline-flex;align-items:center;gap:6px;height:26px;padding:0 11px;border-radius:999px;
    font-size:12.5px;font-weight:600;letter-spacing:.02em;
  }
  .badge-lime{background:rgba(200,255,46,.13);color:var(--lime);border:1px solid rgba(200,255,46,.28)}
  .badge-orange{background:rgba(255,107,44,.14);color:#FF9061;border:1px solid rgba(255,107,44,.3)}
  .badge-ghost{background:rgba(255,255,255,.05);color:var(--muted);border:1px solid var(--line)}

  /* ===== 内页 Hero ===== */
  .page-hero{position:relative;overflow:hidden;border-bottom:1px solid var(--line)}
  .page-hero-bg{
    position:absolute;inset:0;
    background-image:url("/assets/images/backpic/back-2.webp");
    background-size:cover;background-position:center;
    opacity:.22;
  }
  .page-hero-grid{
    position:absolute;inset:0;
    background-image:linear-gradient(rgba(255,255,255,.045) 1px,transparent 1px),
                     linear-gradient(90deg,rgba(255,255,255,.045) 1px,transparent 1px);
    background-size:64px 64px;
    mask-image:linear-gradient(to bottom,rgba(0,0,0,.9),transparent 88%);
    -webkit-mask-image:linear-gradient(to bottom,rgba(0,0,0,.9),transparent 88%);
  }
  .page-hero-fade{position:absolute;inset:0;background:linear-gradient(180deg,rgba(13,15,18,.55),rgba(13,15,18,.96))}
  .page-hero-inner{position:relative;padding:72px 0 64px}
  .breadcrumb{display:flex;flex-wrap:wrap;align-items:center;gap:8px;font-size:13.5px;color:var(--faint);margin-bottom:22px}
  .breadcrumb a{color:var(--muted);transition:color .18s}
  .breadcrumb a:hover{color:var(--lime)}
  .breadcrumb span.sep{color:var(--faint)}
  .breadcrumb .cur{color:var(--text)}
  h1.hero-title{
    font-size:clamp(2rem,4.6vw,3.5rem);
    font-weight:800;line-height:1.08;letter-spacing:-.02em;max-width:900px;
  }
  h1.hero-title mark{background:none;color:var(--lime)}
  .hero-sub{margin-top:20px;max-width:760px;color:var(--muted);font-size:17px}
  .hero-actions{display:flex;flex-wrap:wrap;gap:14px;margin-top:32px}
  .hero-meta{display:flex;flex-wrap:wrap;gap:10px;margin-top:28px}

  /* ===== 页面主体布局 ===== */
  .section{padding:84px 0}
  .section-tight{padding:64px 0}
  .guide-layout{display:grid;grid-template-columns:250px minmax(0,1fr);gap:56px;align-items:start}

  /* 目录侧栏 */
  .toc{
    position:sticky;top:120px;border:1px solid var(--line);border-radius:var(--radius);
    background:var(--panel);padding:20px;box-shadow:var(--shadow);
  }
  .toc-title{font-size:12.5px;letter-spacing:.14em;color:var(--faint);text-transform:uppercase;margin-bottom:14px}
  .toc a{
    display:block;padding:9px 12px;border-radius:10px;font-size:14.5px;color:var(--muted);
    border-left:2px solid transparent;transition:color .18s, background .18s, border-color .18s;
  }
  .toc a:hover{color:var(--text);background:rgba(255,255,255,.05)}
  .toc a.on{color:var(--lime);background:rgba(200,255,46,.08);border-left-color:var(--lime)}
  .toc-foot{margin-top:18px;padding-top:16px;border-top:1px solid var(--line);font-size:13px;color:var(--faint)}

  .prose h2{font-size:clamp(1.5rem,2.6vw,2.1rem);font-weight:700;margin:0 0 18px}
  .prose h3{font-size:1.2rem;font-weight:600;margin:30px 0 10px}
  .prose p{color:#D7DCD5;margin-bottom:16px}
  .prose p.lead{font-size:17.5px;color:var(--text)}
  .prose ul,.prose ol{color:#CFD5CE;margin:0 0 18px}
  .prose li{margin-bottom:8px}
  .prose li strong{color:var(--text)}
  .doc-block{padding:36px 0;border-top:1px solid var(--line)}
  .doc-block:first-of-type{border-top:0;padding-top:0}

  .callout{
    border-left:3px solid var(--lime);background:rgba(200,255,46,.06);
    border-radius:0 var(--radius-sm) var(--radius-sm) 0;padding:16px 20px;color:#DCE2D9;margin:22px 0;
  }
  .callout.warn{border-left-color:var(--orange);background:rgba(255,107,44,.07)}
  .callout strong{color:var(--text)}

  .check-list{list-style:none;padding:0;margin:0}
  .check-list li{
    position:relative;padding-left:30px;margin-bottom:12px;color:#CFD5CE;
  }
  .check-list li::before{
    content:"";position:absolute;left:0;top:11px;width:14px;height:8px;
    border-left:2px solid var(--lime);border-bottom:2px solid var(--lime);
    transform:rotate(-45deg);
  }

  .order-list{list-style:none;counter-reset:step;padding:0;margin:0}
  .order-list li{
    counter-increment:step;position:relative;padding:0 0 20px 54px;color:#CFD5CE;
    border-left:1px solid var(--line);margin-left:16px;
  }
  .order-list li:last-child{border-left-color:transparent;padding-bottom:0}
  .order-list li::before{
    content:counter(step,decimal-leading-zero);
    position:absolute;left:-17px;top:0;width:34px;height:34px;border-radius:10px;
    display:grid;place-items:center;background:var(--panel-2);border:1px solid var(--line-strong);
    color:var(--lime);font-size:13px;font-weight:700;font-variant-numeric:tabular-nums;
  }
  .order-list li strong{display:block;color:var(--text);margin-bottom:4px}

  /* ===== 步骤卡横向滚动 ===== */
  .step-track{
    display:flex;gap:20px;overflow-x:auto;scroll-snap-type:x mandatory;
    padding:6px 4px 18px;margin:0 -4px;
    scrollbar-width:thin;scrollbar-color:rgba(255,255,255,.2) transparent;
  }
  .step-track::-webkit-scrollbar{height:6px}
  .step-track::-webkit-scrollbar-thumb{background:rgba(255,255,255,.18);border-radius:99px}
  .step-card{
    flex:0 0 296px;scroll-snap-align:start;background:var(--panel);
    border:1px solid var(--line);border-radius:var(--radius);padding:24px;
    transition:transform .22s ease, box-shadow .22s ease, border-color .22s ease;
  }
  .step-card:hover{transform:translateY(-4px);box-shadow:var(--shadow-hover);border-color:rgba(200,255,46,.38)}
  .step-num{
    font-size:13px;font-weight:700;letter-spacing:.12em;color:var(--orange);
    font-variant-numeric:tabular-nums;
  }
  .step-card h4{font-size:17px;font-weight:700;margin:12px 0 8px}
  .step-card p{font-size:14.5px;color:var(--muted);line-height:1.75;margin:0}

  /* ===== 设备差异双栏 ===== */
  .device-grid{display:grid;grid-template-columns:repeat(2,minmax(0,1fr));gap:24px;margin-top:8px}
  .device-card{
    background:var(--panel);border:1px solid var(--line);border-radius:var(--radius);
    overflow:hidden;transition:transform .22s ease, box-shadow .22s ease;
  }
  .device-card:hover{transform:translateY(-4px);box-shadow:var(--shadow-hover)}
  .device-card img{height:172px;width:100%;object-fit:cover}
  .device-body{padding:22px}
  .device-body h3{margin:0 0 10px;font-size:18px}
  .device-body ul{padding-left:18px;color:var(--muted);font-size:14.5px;margin:0}
  .device-body ul li{margin-bottom:6px}

  /* ===== FAQ ===== */
  .faq-wrap{background:var(--paper);color:#111411;border-radius:24px;padding:56px 48px}
  .faq-wrap .eyebrow{color:#7A8276;font-size:12.5px;letter-spacing:.16em;text-transform:uppercase}
  .faq-wrap h2{color:#111411;margin:12px 0 28px;font-size:clamp(1.6rem,3vw,2.3rem);font-weight:800}
  .faq-grid{display:grid;grid-template-columns:repeat(2,minmax(0,1fr));gap:0 40px}
  .faq-wrap details{border-bottom:1px solid rgba(17,20,17,.1);padding:18px 0}
  .faq-wrap summary{
    list-style:none;cursor:pointer;display:flex;align-items:flex-start;gap:14px;
    font-weight:700;font-size:16px;color:#111411;
  }
  .faq-wrap summary::-webkit-details-marker{display:none}
  .faq-wrap summary .plus{
    margin-left:auto;flex:none;width:22px;height:22px;position:relative;transition:transform .24s ease;
  }
  .faq-wrap summary .plus::before,
  .faq-wrap summary .plus::after{
    content:"";position:absolute;background:#4A5148;border-radius:2px;left:50%;top:50%;
  }
  .faq-wrap summary .plus::before{width:13px;height:2px;transform:translate(-50%,-50%)}
  .faq-wrap summary .plus::after{width:2px;height:13px;transform:translate(-50%,-50%)}
  .faq-wrap details[open] summary .plus{transform:rotate(180deg)}
  .faq-wrap details[open] summary .plus::after{opacity:0}
  .faq-wrap .ans{color:#4A5148;font-size:15px;margin:12px 0 0;padding-right:8px}

  /* ===== CTA 区 ===== */
  .cta-band{
    border:1px solid rgba(200,255,46,.3);border-radius:24px;padding:56px 48px;
    background:linear-gradient(135deg,rgba(200,255,46,.07),rgba(255,107,44,.05));
    display:grid;grid-template-columns:1.4fr 1fr;gap:36px;align-items:center;
  }
  .cta-band h2{font-size:clamp(1.6rem,3vw,2.4rem);font-weight:800;margin-bottom:14px}
  .cta-band p{color:var(--muted)}
  .cta-actions{display:flex;flex-direction:column;gap:12px;align-items:stretch}

  /* ===== 页脚 ===== */
  .site-footer{background:#0A0C0E;border-top:1px solid var(--line);padding:72px 0 0;margin-top:20px}
  .footer-grid{display:grid;grid-template-columns:1.6fr 1fr 1fr 1fr;gap:44px}
  .footer-brand .brand{margin-bottom:18px}
  .footer-brand p{color:var(--muted);font-size:14.5px;max-width:360px}
  .footer-cta{display:flex;flex-wrap:wrap;gap:12px;margin-top:22px}
  .footer-cta .btn-plain{height:46px;padding:0 4px}
  .footer-col h4{font-size:14px;font-weight:700;letter-spacing:.04em;margin-bottom:16px;color:var(--text)}
  .footer-col a{display:block;color:var(--muted);font-size:14.5px;padding:6px 0;transition:color .18s, transform .18s}
  .footer-col a:hover{color:var(--lime);transform:translateX(3px)}
  .footer-bottom{
    margin-top:56px;border-top:1px solid var(--line);padding:22px 0 28px;
    display:flex;flex-wrap:wrap;gap:12px;justify-content:space-between;align-items:center;
    font-size:13px;color:var(--faint);
  }
  .to-top{color:var(--muted);transition:color .18s}
  .to-top:hover{color:var(--lime)}

  /* ===== 浮动 CTA ===== */
  .float-cta{
    position:fixed;right:28px;bottom:28px;z-index:70;
    display:inline-flex;align-items:center;gap:10px;
    background:var(--lime);color:#0D0F12;font-weight:700;font-size:14.5px;
    padding:14px 22px;border-radius:999px;box-shadow:0 14px 34px rgba(0,0,0,.4);
    transform:translateY(140%);opacity:0;transition:transform .32s ease, opacity .32s ease, box-shadow .2s ease;
  }
  .float-cta.show{transform:translateY(0);opacity:1}
  .float-cta:hover{box-shadow:0 0 0 1px rgba(200,255,46,.6),0 18px 40px rgba(200,255,46,.22)}
  .float-cta.pulse{animation:pulse .8s ease}
  @keyframes pulse{
    0%{box-shadow:0 0 0 0 rgba(200,255,46,.55)}
    70%{box-shadow:0 0 0 16px rgba(200,255,46,0)}
    100%{box-shadow:0 0 0 0 rgba(200,255,46,0)}
  }

  /* ===== 滚动淡入 ===== */
  .reveal{opacity:0;transform:translateY(18px);transition:opacity .5s ease, transform .5s ease}
  .reveal.in{opacity:1;transform:none}

  /* ===== 断点 ===== */
  @media (max-width:1280px){
    .guide-layout{gap:40px}
    .footer-grid{grid-template-columns:1.4fr 1fr 1fr;gap:36px}
  }
  @media (max-width:1024px){
    .container{padding:0 28px}
    .nav-links{gap:0}
    .nav-link{padding:9px 10px;font-size:14px}
    .guide-layout{grid-template-columns:1fr;gap:32px}
    .toc{position:static;top:auto}
    .toc a{display:inline-block;margin:0 8px 8px 0;border-left:0;border:1px solid var(--line)}
    .toc a.on{border-color:rgba(200,255,46,.4)}
    .faq-grid{grid-template-columns:1fr}
    .cta-band{grid-template-columns:1fr;padding:44px 36px}
    .faq-wrap{padding:44px 32px}
  }
  @media (max-width:900px){
    .menu-btn{display:grid}
    .nav-cta{display:none}
    .nav-links{
      position:fixed;inset:0 0 0 auto;width:min(84vw,340px);
      background:var(--panel);border-left:1px solid var(--line);
      flex-direction:column;align-items:stretch;gap:6px;
      padding:92px 20px 28px;margin:0;
      transform:translateX(100%);transition:transform .3s ease;
      box-shadow:-20px 0 50px rgba(0,0,0,.5);overflow-y:auto;
    }
    .nav-links.open{transform:translateX(0)}
    .nav-link{padding:13px 16px;font-size:16px;border-radius:12px}
    .nav-link::after{display:none}
    .nav-link.active{background:rgba(200,255,46,.1)}
    .nav-drawer-foot{margin-top:auto;padding-top:20px;border-top:1px solid var(--line)}
    .nav-drawer-foot .btn{width:100%}
    .device-grid{grid-template-columns:1fr}
    .footer-grid{grid-template-columns:1fr 1fr;gap:32px}
  }
  @media (max-width:768px){
    body{font-size:16px}
    .container{padding:0 20px}
    .page-hero-inner{padding:48px 0 44px}
    .hero-sub{font-size:15.5px}
    .section{padding:64px 0}
    .section-tight{padding:48px 0}
    .doc-block{padding:28px 0}
    .step-card{flex:0 0 254px;padding:20px}
    .faq-wrap{padding:36px 22px;border-radius:18px}
    .cta-band{padding:36px 22px;border-radius:18px}
    .footer-grid{grid-template-columns:1fr;gap:28px}
    .footer-bottom{flex-direction:column;align-items:flex-start;gap:8px}
    .float-cta{
      right:16px;left:16px;bottom:16px;justify-content:center;
      padding:15px 18px;font-size:15px;
    }
  }
  @media (max-width:520px){
    h1.hero-title{font-size:1.85rem}
    .brand-text{font-size:15px}
    .brand-text em{display:inline}
    .hero-actions .btn{width:100%}
    .topbar-link{display:none}
  }

/* roulang page: category4 */
:root{
    --lime:#C8FF2E;
    --lava:#FF6B2C;
    --bg:#0D0F12;
    --bg-2:#15181D;
    --paper:#F7F7F2;
    --tx:#F5F7F4;
    --tx-2:#A8B0A5;
    --tx-3:#6C746B;
    --ok:#3DDC97;
    --warn:#FFB020;
    --danger:#FF4D4F;
    --r-card:18px;
    --r-btn:12px;
    --bd:1px solid rgba(255,255,255,.08);
    --shadow:0 12px 30px rgba(0,0,0,.28);
    --shadow-hover:0 20px 50px rgba(0,0,0,.38);
    --container:1240px;
  }
  *,*::before,*::after{box-sizing:border-box}
  html{scroll-behavior:smooth}
  body{
    margin:0;
    background:var(--bg);
    color:var(--tx);
    font-family:"PingFang SC","Microsoft YaHei","Noto Sans SC",system-ui,sans-serif;
    font-size:16.5px;
    line-height:1.8;
    -webkit-font-smoothing:antialiased;
    overflow-x:hidden;
  }
  img{max-width:100%;display:block}
  a{color:inherit;text-decoration:none}
  button,input,select,textarea{font:inherit;color:inherit}
  h1,h2,h3,h4{margin:0;letter-spacing:-.01em}
  p{margin:0}
  ul{margin:0;padding:0;list-style:none}

  .container{width:100%;max-width:var(--container);margin:0 auto;padding:0 32px}

  /* ---------- 顶部信息条 ---------- */
  .topbar{
    background:#0A0C0E;
    border-bottom:var(--bd);
    font-size:13px;
    color:var(--tx-2);
  }
  .topbar-inner{
    display:flex;align-items:center;justify-content:space-between;
    gap:16px;min-height:34px;padding:6px 0;
  }
  .topbar .dot{
    display:inline-block;width:7px;height:7px;border-radius:999px;
    background:var(--lime);margin-right:8px;vertical-align:middle;
    box-shadow:0 0 0 4px rgba(200,255,46,.14);
  }
  .topbar-left{display:flex;align-items:center;gap:10px;flex-wrap:wrap}
  .topbar-tag{
    border:1px solid rgba(255,107,44,.4);color:var(--lava);
    border-radius:999px;padding:1px 9px;font-size:12px;
  }
  .topbar-right a{color:var(--tx-2);border-bottom:1px solid rgba(255,255,255,.16)}
  .topbar-right a:hover{color:var(--lime);border-color:var(--lime)}

  /* ---------- 主导航 ---------- */
  .site-header{
    position:sticky;top:0;z-index:60;
    background:rgba(13,15,18,.88);
    backdrop-filter:blur(14px);
    border-bottom:var(--bd);
  }
  .nav-inner{display:flex;align-items:center;gap:24px;min-height:72px;padding:10px 0}
  .brand{display:flex;align-items:center;gap:10px;flex-shrink:0}
  .brand-mark{
    width:38px;height:38px;border-radius:11px;background:var(--lime);color:#111411;
    font-weight:800;font-size:14px;display:grid;place-items:center;letter-spacing:.02em;
  }
  .brand-text{font-size:17px;font-weight:700;white-space:nowrap}
  .brand-text em{font-style:normal;color:var(--lime)}
  .nav-links{display:flex;align-items:center;gap:4px;margin-left:auto}
  .nav-link{
    position:relative;padding:9px 14px;border-radius:999px;
    font-size:14.5px;color:var(--tx-2);transition:color .18s,background .18s,box-shadow .18s;
    white-space:nowrap;
  }
  .nav-link:hover{color:var(--tx);background:rgba(255,255,255,.06)}
  .nav-link.active{
    color:var(--lime);background:rgba(200,255,46,.1);
    box-shadow:inset 0 0 0 1px rgba(200,255,46,.35);
  }
  .nav-cta{white-space:nowrap}
  .menu-btn{
    display:none;width:42px;height:42px;border-radius:12px;
    background:rgba(255,255,255,.05);border:var(--bd);
    cursor:pointer;padding:0;place-items:center;gap:5px;
  }
  .menu-btn span{display:block;width:18px;height:2px;background:var(--tx);border-radius:2px;margin:3px auto;transition:.2s}
  .menu-btn.is-open span:nth-child(1){transform:translateY(5px) rotate(45deg)}
  .menu-btn.is-open span:nth-child(2){opacity:0}
  .menu-btn.is-open span:nth-child(3){transform:translateY(-5px) rotate(-45deg)}

  /* ---------- 按钮 ---------- */
  .btn{
    display:inline-flex;align-items:center;justify-content:center;gap:8px;
    padding:12px 22px;border-radius:var(--r-btn);
    font-size:15px;font-weight:600;line-height:1.2;
    border:1px solid transparent;cursor:pointer;
    transition:transform .16s,box-shadow .16s,background .16s,color .16s,border-color .16s;
  }
  .btn:active{transform:translateY(1px)}
  .btn-primary{background:var(--lime);color:#111411;border-color:var(--lime)}
  .btn-primary:hover{box-shadow:0 0 0 1px rgba(200,255,46,.6),0 10px 26px rgba(200,255,46,.22);transform:translateY(-2px)}
  .btn-ghost{background:transparent;color:var(--lime);border-color:rgba(200,255,46,.5)}
  .btn-ghost:hover{background:rgba(200,255,46,.1);transform:translateY(-2px)}
  .btn-plain{background:rgba(255,255,255,.05);color:var(--tx);border-color:rgba(255,255,255,.12)}
  .btn-plain:hover{background:rgba(255,255,255,.1);border-color:rgba(200,255,46,.4);transform:translateY(-2px)}
  .btn-sm{padding:9px 16px;font-size:14px}
  a:focus-visible,button:focus-visible,summary:focus-visible,input:focus-visible,select:focus-visible,textarea:focus-visible{
    outline:2px solid var(--lime);outline-offset:2px;border-radius:6px;
  }

  /* ---------- 徽章 / 标签 ---------- */
  .badge{
    display:inline-flex;align-items:center;gap:6px;
    padding:3px 10px;border-radius:999px;font-size:12.5px;font-weight:600;
    border:1px solid rgba(255,107,44,.45);color:var(--lava);background:rgba(255,107,44,.08);
  }
  .badge-lime{border-color:rgba(200,255,46,.45);color:var(--lime);background:rgba(200,255,46,.08)}
  .badge-warn{border-color:rgba(255,176,32,.45);color:var(--warn);background:rgba(255,176,32,.08)}
  .badge-danger{border-color:rgba(255,77,79,.5);color:#FF8A8C;background:rgba(255,77,79,.1)}
  .badge-ok{border-color:rgba(61,220,151,.45);color:var(--ok);background:rgba(61,220,151,.08)}

  /* ---------- 板块通用 ---------- */
  .section{padding:96px 0;position:relative}
  .section-sm{padding:72px 0}
  .section-paper{background:var(--paper);color:#111411}
  .section-paper .sec-sub,.section-paper p{color:#4A5148}
  .section-band{background:var(--bg-2);border-top:var(--bd);border-bottom:var(--bd)}
  .eyebrow{
    display:inline-flex;align-items:center;gap:8px;
    font-size:13px;letter-spacing:.14em;text-transform:uppercase;
    color:var(--lime);font-weight:700;
  }
  .eyebrow::before{content:"";width:22px;height:2px;background:var(--lime);display:block}
  .section-paper .eyebrow{color:#4A5148}
  .section-paper .eyebrow::before{background:var(--lava)}
  .sec-title{font-size:clamp(1.7rem,3.2vw,2.5rem);font-weight:700;line-height:1.16;margin-top:14px}
  .sec-sub{margin-top:14px;color:var(--tx-2);font-size:16px;max-width:720px}

  /* ---------- Hero ---------- */
  .cat-hero{
    position:relative;overflow:hidden;
    border-bottom:var(--bd);
    background-image:linear-gradient(90deg,rgba(13,15,18,.96) 0%,rgba(13,15,18,.86) 45%,rgba(13,15,18,.6) 100%),
      url("/assets/images/backpic/back-2.webp");
    background-size:cover;background-position:center;
  }
  .cat-hero::after{
    content:"";position:absolute;inset:0;pointer-events:none;
    background-image:linear-gradient(rgba(255,255,255,.045) 1px,transparent 1px),
                     linear-gradient(90deg,rgba(255,255,255,.045) 1px,transparent 1px);
    background-size:64px 64px;
    mask-image:linear-gradient(180deg,rgba(0,0,0,.9),transparent 80%);
  }
  .cat-hero-inner{position:relative;z-index:2;padding:88px 0 76px;max-width:820px}
  .cat-hero h1{
    font-size:clamp(2.1rem,5vw,3.6rem);
    font-weight:800;line-height:1.1;letter-spacing:-.02em;margin-top:20px;
  }
  .cat-hero h1 span{color:var(--lime)}
  .cat-hero .lead{margin-top:20px;color:var(--tx-2);font-size:17px;max-width:680px}
  .cat-hero-tags{display:flex;flex-wrap:wrap;gap:10px;margin-top:26px}
  .cat-hero-actions{display:flex;flex-wrap:wrap;gap:14px;margin-top:32px}
  .hero-stats{
    display:flex;flex-wrap:wrap;gap:34px;margin-top:44px;
    padding-top:26px;border-top:1px solid rgba(255,255,255,.1);
  }
  .hero-stats .num{font-size:26px;font-weight:800;color:var(--lime);font-variant-numeric:tabular-nums}
  .hero-stats .lbl{font-size:13.5px;color:var(--tx-3)}

  /* ---------- 面包屑 ---------- */
  .crumbs{
    display:flex;align-items:center;gap:8px;flex-wrap:wrap;
    font-size:13.5px;color:var(--tx-3);padding:18px 0 0;
  }
  .crumbs a{color:var(--tx-2)}
  .crumbs a:hover{color:var(--lime)}
  .crumbs .sep{color:var(--tx-3);opacity:.7}
  .crumbs .cur{color:var(--tx)}

  /* ---------- 警示卡 ---------- */
  .alert-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:20px;margin-top:40px}
  .alert-card{
    background:var(--bg-2);border:1px solid rgba(255,107,44,.28);
    border-radius:var(--r-card);padding:26px 24px;
    box-shadow:var(--shadow);
    transition:transform .2s,box-shadow .2s,border-color .2s;
  }
  .alert-card:hover{transform:translateY(-4px);box-shadow:var(--shadow-hover);border-color:rgba(255,107,44,.6)}
  .alert-card .ico{
    width:40px;height:40px;border-radius:11px;display:grid;place-items:center;
    background:rgba(255,107,44,.14);color:var(--lava);font-weight:800;font-size:18px;
    margin-bottom:16px;
  }
  .alert-card h3{font-size:18px;font-weight:700}
  .alert-card p{margin-top:10px;color:var(--tx-2);font-size:15px}

  /* ---------- 自检清单 ---------- */
  .check-wrap{display:grid;grid-template-columns:0.85fr 1.15fr;gap:56px;align-items:start;margin-top:44px}
  .check-sticky{position:sticky;top:104px}
  .check-media{
    border-radius:var(--r-card);overflow:hidden;border:var(--bd);
    box-shadow:var(--shadow);
  }
  .check-media img{width:100%;height:230px;object-fit:cover}
  .check-note{
    margin-top:20px;padding:16px 18px;border-radius:14px;
    background:rgba(200,255,46,.07);border:1px solid rgba(200,255,46,.25);
    font-size:14.5px;color:var(--tx-2);
  }
  .check-list{display:flex;flex-direction:column;gap:12px}
  .check-item{
    display:flex;gap:18px;align-items:flex-start;
    padding:20px 22px;border-radius:16px;
    background:var(--bg-2);border:var(--bd);
    transition:transform .2s,border-color .2s,box-shadow .2s;
  }
  .check-item:hover{transform:translateX(6px);border-color:rgba(200,255,46,.42);box-shadow:var(--shadow)}
  .check-item .idx{
    font-family:"Inter",system-ui,sans-serif;
    font-size:14px;font-weight:800;color:var(--lime);
    padding-top:4px;font-variant-numeric:tabular-nums;letter-spacing:.04em;
  }
  .check-item h3{font-size:17px;font-weight:700}
  .check-item p{margin-top:6px;color:var(--tx-2);font-size:15px}

  /* ---------- 判定流程 ---------- */
  .flow-grid{display:grid;grid-template-columns:repeat(2,1fr);gap:22px;margin-top:44px}
  .flow-card{
    border-radius:var(--r-card);padding:26px 24px;
    background:var(--paper);color:#111411;box-shadow:var(--shadow);
    transition:transform .2s,box-shadow .2s;
  }
  .flow-card:hover{transform:translateY(-4px);box-shadow:0 20px 50px rgba(0,0,0,.22)}
  .flow-card h3{font-size:17.5px;font-weight:700;color:#111411}
  .flow-card p{margin-top:10px;color:#4A5148;font-size:15px}
  .flow-card .tagline{
    display:inline-block;font-size:12.5px;font-weight:700;color:#7A8276;
    letter-spacing:.1em;margin-bottom:12px;
  }
  .flow-card.is-lime{border-left:4px solid var(--lime)}
  .flow-card.is-lava{border-left:4px solid var(--lava)}

  /* ---------- FAQ ---------- */
  .faq-wrap{display:grid;grid-template-columns:0.6fr 1.4fr;gap:48px;margin-top:44px;align-items:start}
  .faq-cols{display:grid;grid-template-columns:repeat(2,1fr);gap:14px;align-content:start}
  .faq-item{
    background:var(--bg-2);border:var(--bd);border-radius:16px;
    padding:0;overflow:hidden;transition:border-color .2s,background .2s;
  }
  .faq-item:hover{border-color:rgba(200,255,46,.35)}
  .faq-item summary{
    list-style:none;cursor:pointer;
    display:flex;align-items:flex-start;justify-content:space-between;gap:14px;
    padding:18px 20px;font-size:15.5px;font-weight:600;
  }
  .faq-item summary::-webkit-details-marker{display:none}
  .faq-item .plus{
    flex-shrink:0;width:22px;height:22px;border-radius:999px;
    display:grid;place-items:center;font-size:15px;line-height:1;
    color:var(--lime);border:1px solid rgba(200,255,46,.35);
    transition:transform .25s,background .2s,color .2s;
  }
  .faq-item[open] .plus{transform:rotate(45deg);background:var(--lime);color:#111411}
  .faq-item[open]{background:#181C22;border-color:rgba(200,255,46,.4)}
  .faq-item .ans{padding:0 20px 20px;color:var(--tx-2);font-size:15px}
  .faq-side{padding:24px;border-radius:var(--r-card);background:var(--bg-2);border:var(--bd);box-shadow:var(--shadow)}
  .faq-side h3{font-size:18px;font-weight:700}
  .faq-side p{margin-top:12px;color:var(--tx-2);font-size:15px}
  .faq-side .btn{margin-top:18px;width:100%}

  /* ---------- 表单 ---------- */
  .form-panel{
    display:grid;grid-template-columns:0.9fr 1.1fr;gap:44px;
    align-items:start;margin-top:44px;
  }
  .form-visual{
    border-radius:var(--r-card);overflow:hidden;border:var(--bd);
    box-shadow:var(--shadow);
  }
  .form-visual img{width:100%;height:260px;object-fit:cover}
  .form-side-info{margin-top:22px;display:flex;flex-direction:column;gap:12px}
  .form-side-info li{display:flex;gap:10px;font-size:14.5px;color:var(--tx-2)}
  .form-side-info li::before{content:"✓";color:var(--lime);font-weight:700}
  .form-card{
    background:var(--bg-2);border:var(--bd);border-radius:var(--r-card);
    padding:30px;box-shadow:var(--shadow);
  }
  .form-grid{display:grid;grid-template-columns:1fr 1fr;gap:18px}
  .field{display:flex;flex-direction:column;gap:8px}
  .field.full{grid-column:1 / -1}
  .field label{font-size:14px;color:var(--tx-2);font-weight:600}
  .field .req{color:var(--lava)}
  .field input,.field select,.field textarea{
    background:#0F1215;border:1px solid rgba(255,255,255,.12);
    border-radius:12px;padding:12px 14px;font-size:15px;color:var(--tx);
    transition:border-color .18s,box-shadow .18s,background .18s;width:100%;
  }
  .field textarea{min-height:130px;resize:vertical;line-height:1.7}
  .field select option{background:#15181D;color:var(--tx)}
  .field input::placeholder,.field textarea::placeholder{color:var(--tx-3)}
  .field input:focus,.field select:focus,.field textarea:focus{
    outline:none;border-color:var(--lime);background:#101317;
    box-shadow:0 0 0 4px rgba(200,255,46,.14);
  }
  .form-foot{display:flex;align-items:center;gap:16px;flex-wrap:wrap;margin-top:22px}
  .form-tip{font-size:13px;color:var(--tx-3);line-height:1.6}
  .form-status{margin-top:16px;font-size:14px;color:var(--ok);display:none}
  .form-status.show{display:block}

  /* ---------- CTA ---------- */
  .cta-band{
    position:relative;overflow:hidden;border-radius:24px;
    background:linear-gradient(120deg,#141A10 0%,#0F1417 55%,#1A1310 100%);
    border:1px solid rgba(200,255,46,.22);
    padding:52px 48px;
    display:flex;align-items:center;justify-content:space-between;gap:36px;flex-wrap:wrap;
  }
  .cta-band::after{
    content:"";position:absolute;right:-80px;top:-80px;width:280px;height:280px;
    border-radius:50%;background:radial-gradient(circle,rgba(200,255,46,.18),transparent 68%);
  }
  .cta-band h2{font-size:clamp(1.5rem,2.6vw,2.1rem);font-weight:700;position:relative;z-index:2}
  .cta-band p{margin-top:12px;color:var(--tx-2);max-width:560px;position:relative;z-index:2}
  .cta-band .cta-actions{display:flex;gap:14px;flex-wrap:wrap;position:relative;z-index:2}

  /* ---------- 浮动 CTA ---------- */
  .float-cta{
    position:fixed;right:26px;bottom:26px;z-index:70;
    display:flex;align-items:center;gap:10px;
    background:var(--lime);color:#111411;font-weight:700;font-size:14.5px;
    padding:12px 20px;border-radius:999px;
    box-shadow:0 14px 34px rgba(200,255,46,.24),0 8px 24px rgba(0,0,0,.4);
    transform:translateY(120%);opacity:0;pointer-events:none;
    transition:transform .3s,opacity .3s,box-shadow .2s;
  }
  .float-cta.show{transform:translateY(0);opacity:1;pointer-events:auto}
  .float-cta:hover{box-shadow:0 18px 44px rgba(200,255,46,.34),0 10px 28px rgba(0,0,0,.45)}
  .float-cta .close{
    border:none;background:rgba(17,20,17,.16);color:#111411;
    width:22px;height:22px;border-radius:999px;cursor:pointer;line-height:1;
    display:grid;place-items:center;font-size:13px;padding:0;
  }
  @keyframes pulseRing{
    0%{box-shadow:0 0 0 0 rgba(200,255,46,.5),0 14px 34px rgba(200,255,46,.24)}
    70%{box-shadow:0 0 0 14px rgba(200,255,46,0),0 14px 34px rgba(200,255,46,.24)}
    100%{box-shadow:0 0 0 0 rgba(200,255,46,0),0 14px 34px rgba(200,255,46,.24)}
  }
  .float-cta.pulse{animation:pulseRing .9s ease-out}

  /* ---------- 页脚 ---------- */
  .site-footer{
    background:#0A0C0E;border-top:var(--bd);padding:64px 0 26px;margin-top:0;
  }
  .footer-grid{
    display:grid;grid-template-columns:1.5fr 1fr 1fr 1fr;gap:40px;
  }
  .footer-brand p{margin-top:16px;color:var(--tx-2);font-size:14.5px;max-width:340px}
  .footer-cta{display:flex;gap:12px;flex-wrap:wrap;margin-top:22px}
  .footer-col h4{font-size:15px;font-weight:700;margin-bottom:16px}
  .footer-col a{display:block;color:var(--tx-2);font-size:14.5px;padding:5px 0;transition:color .16s,transform .16s}
  .footer-col a:hover{color:var(--lime);transform:translateX(3px)}
  .footer-bottom{
    margin-top:48px;padding-top:22px;border-top:var(--bd);
    display:flex;align-items:center;justify-content:space-between;gap:16px;flex-wrap:wrap;
    font-size:13.5px;color:var(--tx-3);
  }
  .footer-bottom .to-top{color:var(--tx-2)}
  .footer-bottom .to-top:hover{color:var(--lime)}

  /* ---------- 动画 ---------- */
  .reveal{opacity:0;transform:translateY(18px);transition:opacity .45s ease,transform .45s ease}
  .reveal.in{opacity:1;transform:translateY(0)}

  /* ---------- 响应式 ---------- */
  @media (max-width:1280px){
    .container{padding:0 28px}
  }
  @media (max-width:1024px){
    .nav-links{
      position:fixed;inset:0 0 0 auto;width:min(84vw,340px);
      background:#111419;border-left:var(--bd);
      flex-direction:column;align-items:stretch;gap:6px;
      padding:88px 22px 40px;margin:0;
      transform:translateX(105%);transition:transform .28s ease;
      box-shadow:-20px 0 50px rgba(0,0,0,.5);
      z-index:65;overflow-y:auto;
    }
    .nav-links.open{transform:translateX(0)}
    .nav-link{padding:13px 16px;font-size:15.5px;border-radius:12px}
    .menu-btn{display:grid;margin-left:6px;z-index:70}
    .nav-cta{display:none}
    .check-wrap{grid-template-columns:1fr;gap:32px}
    .check-sticky{position:static}
    .faq-wrap{grid-template-columns:1fr;gap:32px}
    .form-panel{grid-template-columns:1fr;gap:32px}
    .alert-grid{grid-template-columns:1fr 1fr}
    .footer-grid{grid-template-columns:1fr 1fr;gap:32px}
  }
  @media (max-width:768px){
    body{font-size:16px}
    .container{padding:0 20px}
    .section{padding:68px 0}
    .section-sm{padding:56px 0}
    .cat-hero-inner{padding:60px 0 54px}
    .alert-grid{grid-template-columns:1fr}
    .flow-grid{grid-template-columns:1fr}
    .faq-cols{grid-template-columns:1fr}
    .form-grid{grid-template-columns:1fr}
    .cta-band{padding:36px 26px}
    .hero-stats{gap:22px}
    .brand-text{font-size:16px}
  }
  @media (max-width:520px){
    .topbar-inner{font-size:12.5px}
    .topbar-right{display:none}
    .cat-hero h1{font-size:1.9rem}
    .hero-stats .num{font-size:22px}
    .form-card{padding:22px}
    .footer-grid{grid-template-columns:1fr}
    .float-cta{
      right:14px;left:14px;bottom:14px;justify-content:center;
      padding:13px 18px;font-size:15px;
    }
    .footer-bottom{justify-content:center;text-align:center}
  }