/* roulang page: index */
:root{
  --bg-0:#050A14;
  --bg-1:#0A1224;
  --panel:rgba(255,255,255,.045);
  --panel-line:rgba(255,255,255,.09);
  --brand:#4C6FFF;
  --brand-soft:rgba(76,111,255,.22);
  --accent:#2BE0B0;
  --accent-soft:rgba(43,224,176,.10);
  --warn:#FFB45C;
  --warn-soft:rgba(255,180,92,.14);
  --t1:#EAF0FF;
  --t2:#A8B6D4;
  --t3:#6C7B9C;
  --ok:#35D07F;
  --err:#FF6B7A;
  --r-card:16px;
  --r-panel:20px;
  --r-btn:10px;
  --r-input:10px;
  --r-badge:6px;
  --r-pill:999px;
  --shadow:0 18px 44px rgba(0,0,0,.45);
  --sec-y:88px;
  --ease:cubic-bezier(.2,.7,.3,1);
  --font-sans:"PingFang SC","HarmonyOS Sans SC","Microsoft YaHei",system-ui,-apple-system,"Segoe UI",Roboto,sans-serif;
  --font-mono:ui-monospace,"JetBrains Mono","Roboto Mono",Menlo,Consolas,monospace;
}
*,*::before,*::after{box-sizing:border-box}
html{-webkit-text-size-adjust:100%;scroll-behavior:smooth}
body{
  margin:0;
  font-family:var(--font-sans);
  font-size:16px;
  line-height:1.85;
  font-weight:400;
  color:var(--t2);
  background-color:var(--bg-0);
  background-image:
    radial-gradient(closest-side, rgba(43,224,176,.14), transparent),
    repeating-linear-gradient(to right, rgba(255,255,255,.028) 0 1px, transparent 1px 48px),
    repeating-linear-gradient(to bottom, rgba(255,255,255,.028) 0 1px, transparent 1px 48px);
  background-repeat:no-repeat,repeat,repeat;
  background-position:top right,0 0,0 0;
  background-size:620px 620px,auto,auto;
  overflow-x:hidden;
}
body.no-scroll{overflow:hidden}
img{max-width:100%;display:block;border:0}
a{color:inherit;text-decoration:none}
button,input,select,textarea{font:inherit;color:inherit}
h1,h2,h3,h4{margin:0;color:var(--t1);font-weight:700;letter-spacing:.01em}
h1{font-size:clamp(30px,4.4vw,54px);line-height:1.18}
h2{font-size:clamp(24px,2.9vw,36px);line-height:1.3}
h3{font-size:20px;font-weight:600;line-height:1.5}
h4{font-size:17px;font-weight:600;line-height:1.5}
p{margin:0 0 18px}
p:last-child{margin-bottom:0}
ul{margin:0;padding:0;list-style:none}
.mono{font-family:var(--font-mono);font-variant-numeric:tabular-nums;letter-spacing:.02em}
::selection{background:rgba(76,111,255,.35);color:#fff}
::-webkit-scrollbar{width:10px;height:10px}
::-webkit-scrollbar-track{background:var(--bg-0)}
::-webkit-scrollbar-thumb{background:rgba(255,255,255,.14);border-radius:8px}
::-webkit-scrollbar-thumb:hover{background:rgba(255,255,255,.22)}
:focus-visible{outline:2px solid var(--accent);outline-offset:2px}
.grid-container{max-width:1240px;margin:0 auto;padding:0 24px;width:100%}
@media (min-width:1024px){.grid-container{padding:0 40px}}
@media (min-width:1536px){.grid-container{max-width:1280px}}
@media (max-width:639px){.grid-container{padding:0 18px}}
.grid-x{display:flex;flex-wrap:wrap;margin-left:-12px;margin-right:-12px}
.grid-x>.cell{flex:0 0 auto;padding-left:12px;padding-right:12px;min-width:0}
.small-12{width:100%}
@media (min-width:640px){
  .medium-6{width:50%}
  .medium-4{width:33.3333%}
  .medium-8{width:66.6666%}
  .medium-12{width:100%}
}
@media (min-width:1024px){
  .large-5{width:41.6666%}
  .large-6{width:50%}
  .large-7{width:58.3333%}
  .large-4{width:33.3333%}
  .large-3{width:25%}
  .large-8{width:66.6666%}
  .large-12{width:100%}
}
.align-middle{align-items:center}

/* ---------- 按钮 ---------- */
.btn{
  display:inline-flex;align-items:center;justify-content:center;gap:8px;
  min-height:48px;padding:0 26px;border-radius:var(--r-pill);
  font-size:15px;font-weight:600;cursor:pointer;
  border:1px solid transparent;background:transparent;
  transition:background-color .2s var(--ease),border-color .2s var(--ease),box-shadow .2s var(--ease),transform .2s var(--ease),color .2s var(--ease);
}
.btn:active{transform:scale(.98)}
.btn:focus-visible{outline:2px solid var(--accent);outline-offset:2px}
.btn--glow{background:var(--accent-soft);border-color:rgba(43,224,176,.5);color:var(--accent);box-shadow:0 0 22px rgba(43,224,176,.18)}
.btn--glow:hover{background:rgba(43,224,176,.18);box-shadow:0 0 30px rgba(43,224,176,.34)}
.btn--primary{background:var(--brand);color:#fff;border-color:var(--brand)}
.btn--primary:hover{background:#3C5DF0;box-shadow:0 0 26px rgba(76,111,255,.35)}
.btn--ghost{border-color:var(--panel-line);color:var(--t1);background:rgba(255,255,255,.02)}
.btn--ghost:hover{border-color:rgba(43,224,176,.45);color:var(--accent)}
.btn--block{width:100%}
.link-arrow{display:inline-flex;align-items:center;gap:8px;color:var(--accent);font-size:14px;font-weight:600;min-height:44px;transition:transform .2s var(--ease),color .2s var(--ease)}
.link-arrow:hover{transform:translateX(4px);text-decoration:underline;text-underline-offset:3px}

/* ---------- 徽章 / 小标 ---------- */
.badge{
  display:inline-flex;align-items:center;
  padding:3px 10px;border-radius:var(--r-badge);
  background:var(--warn-soft);color:var(--warn);
  font-size:12.5px;letter-spacing:.04em;line-height:1.6;
}
.eyebrow{
  display:inline-flex;align-items:center;gap:10px;
  font-size:12.5px;letter-spacing:.1em;color:var(--t3);
  text-transform:uppercase;
}
.sec-head{display:flex;flex-wrap:wrap;align-items:flex-end;justify-content:space-between;gap:16px;margin-bottom:40px}
.sec-title{display:flex;align-items:center;gap:12px}
.sec-title::before{content:"";display:block;width:2px;height:18px;background:var(--accent);border-radius:2px;flex:none}
.sec-num{font-family:var(--font-mono);font-size:13px;color:var(--brand);letter-spacing:.08em}
.sec-lead{margin-top:12px;font-size:15px;color:var(--t3);max-width:640px}

/* ---------- 头部导航 ---------- */
.site-header{
  position:fixed;top:0;left:0;right:0;z-index:60;
  height:72px;display:flex;align-items:center;
  background:transparent;
  transition:background-color .2s var(--ease),height .2s var(--ease),border-color .2s var(--ease),backdrop-filter .2s var(--ease);
  border-bottom:1px solid transparent;
}
.site-header.is-scrolled{height:60px;background:rgba(5,10,20,.82);backdrop-filter:blur(14px);border-bottom-color:rgba(255,255,255,.07)}
.nav-bar{display:flex;align-items:center;justify-content:space-between;gap:20px;width:100%}
.brand{display:inline-flex;align-items:center;gap:10px;min-height:44px}
.brand-mark{width:20px;height:20px;flex:none;color:var(--accent)}
.brand-name{font-size:18px;font-weight:700;color:var(--t1);letter-spacing:.01em;white-space:nowrap}
.nav-pill{display:flex;align-items:center;gap:2px;padding:4px;border-radius:var(--r-pill);background:rgba(255,255,255,.04);border:1px solid rgba(255,255,255,.06)}
.nav-link{
  position:relative;display:inline-flex;align-items:center;justify-content:center;
  min-height:40px;padding:0 16px;border-radius:var(--r-pill);
  font-size:14.5px;color:var(--t2);border:1px solid transparent;white-space:nowrap;
  transition:color .18s var(--ease),background-color .18s var(--ease),border-color .18s var(--ease);
}
.nav-link:hover{color:var(--t1);background:rgba(255,255,255,.05)}
.nav-link.is-active{color:var(--t1);background:var(--brand-soft);border-color:rgba(76,111,255,.55)}
.nav-cta{
  display:inline-flex;align-items:center;justify-content:center;
  min-height:44px;padding:0 20px;border-radius:var(--r-pill);
  border:1px solid rgba(43,224,176,.5);color:var(--accent);
  font-size:14.5px;font-weight:600;background:transparent;
  transition:background-color .2s var(--ease),box-shadow .2s var(--ease);
}
.nav-cta:hover{background:var(--accent-soft);box-shadow:0 0 24px rgba(43,224,176,.35)}
.nav-toggle{
  display:none;width:44px;height:44px;border-radius:12px;
  border:1px solid var(--panel-line);background:rgba(255,255,255,.03);
  align-items:center;justify-content:center;cursor:pointer;
}
.nav-toggle span{display:block;width:18px;height:2px;background:var(--t1);border-radius:2px;position:relative}
.nav-toggle span::before,.nav-toggle span::after{content:"";position:absolute;left:0;width:18px;height:2px;background:var(--t1);border-radius:2px}
.nav-toggle span::before{top:-6px}
.nav-toggle span::after{top:6px}
.drawer-mask{position:fixed;inset:0;background:rgba(0,0,0,.62);opacity:0;visibility:hidden;transition:opacity .2s var(--ease),visibility .2s var(--ease);z-index:70}
.drawer-mask.is-open{opacity:1;visibility:visible}
.drawer{
  position:fixed;top:0;right:0;bottom:0;width:84vw;max-width:360px;z-index:80;
  background:rgba(10,18,36,.96);backdrop-filter:blur(14px) saturate(120%);
  border-left:1px solid var(--panel-line);
  transform:translateX(100%);transition:transform .24s var(--ease);
  display:flex;flex-direction:column;padding:20px;
}
.drawer.is-open{transform:translateX(0)}
.drawer-top{display:flex;align-items:center;justify-content:space-between;margin-bottom:18px}
.drawer-close{width:44px;height:44px;border-radius:12px;border:1px solid var(--panel-line);background:transparent;color:var(--t1);font-size:20px;line-height:1;cursor:pointer}
.drawer-nav{display:flex;flex-direction:column}
.drawer-nav a{display:flex;align-items:center;height:48px;padding:0 6px;color:var(--t2);font-size:15px;border-left:2px solid transparent}
.drawer-nav a.is-active{color:var(--t1);border-left-color:var(--accent)}
.drawer-divider{height:1px;background:rgba(255,255,255,.08);margin:14px 0}
.drawer-info{font-size:13.5px;color:var(--t3);line-height:2}
.drawer-info strong{color:var(--t2);font-weight:600}
.drawer-cta{margin-top:auto}

/* ---------- Hero ---------- */
.hero{padding:132px 0 var(--sec-y);min-height:78vh;display:flex;align-items:center;border-bottom:1px solid rgba(255,255,255,.06)}
.hero-tag{display:inline-flex;align-items:center;gap:8px;padding:6px 14px;border-radius:var(--r-pill);border:1px solid var(--panel-line);background:var(--panel);font-size:13px;color:var(--t2);margin-bottom:22px}
.hero-tag::before{content:"";width:6px;height:6px;border-radius:50%;background:var(--accent);box-shadow:0 0 10px rgba(43,224,176,.8)}
.hero h1{margin-bottom:20px}
.hero-sub{font-size:17px;color:var(--t2);max-width:560px;margin-bottom:30px}
.hero-actions{display:flex;flex-wrap:wrap;gap:14px;margin-bottom:20px}
.hero-trust{font-size:13.5px;color:var(--t3);margin:0}
.hero-visual{position:relative;padding-bottom:60px}
.hero-media{position:relative;border-radius:var(--r-panel);overflow:hidden;box-shadow:var(--shadow)}
.hero-media img{width:100%;height:340px;object-fit:cover;border-radius:var(--r-panel)}
.hero-media::after{content:"";position:absolute;inset:0;background:rgba(5,10,20,.55)}
.hero-media-cap{position:absolute;left:20px;bottom:18px;z-index:2;font-size:13px;color:var(--t2);letter-spacing:.02em}
.hero-stats{position:absolute;left:-28px;bottom:0;width:66%;display:flex;flex-direction:column;gap:12px}
.stat-card{
  border-radius:var(--r-card);background:var(--panel);backdrop-filter:blur(12px) saturate(120%);
  border:1px solid var(--panel-line);box-shadow:inset 0 1px 0 rgba(255,255,255,.07),var(--shadow);
  padding:16px 20px;
}
.hero-stats .stat-card:nth-child(2){transform:translateX(40px)}
.stat-num{font-family:var(--font-mono);font-size:26px;font-weight:700;color:var(--accent);line-height:1.2}
.stat-label{font-size:13px;color:var(--t3);margin-top:2px}

/* ---------- 指标看板 ---------- */
.metrics{padding:var(--sec-y) 0;border-bottom:1px solid rgba(255,255,255,.06)}
.metrics-row{display:flex;flex-wrap:wrap}
.metric{flex:1 1 0;min-width:200px;padding:8px 28px;border-left:1px solid rgba(255,255,255,.08)}
.metric:first-child{border-left:0;padding-left:0}
.metric-num{font-family:var(--font-mono);font-size:clamp(28px,3.4vw,44px);font-weight:700;color:var(--accent);line-height:1.15}
.metric-label{font-size:13px;color:var(--t3);margin-top:6px}
.metric-rule{height:1px;margin-top:14px;background:linear-gradient(to right,rgba(43,224,176,.4),rgba(255,255,255,.04))}

/* ---------- 服务矩阵 ---------- */
.services{padding:var(--sec-y) 0;border-bottom:1px solid rgba(255,255,255,.06)}
.svc-grid{margin-top:8px}
.svc-card{
  display:flex;flex-direction:column;height:100%;
  border-radius:var(--r-card);background:var(--panel);backdrop-filter:blur(12px) saturate(120%);
  border:1px solid var(--panel-line);box-shadow:inset 0 1px 0 rgba(255,255,255,.07);
  padding:24px;color:var(--t2);
  transition:transform .2s var(--ease),border-color .2s var(--ease),box-shadow .2s var(--ease);
}
.svc-card:hover{transform:translateY(-3px);border-color:rgba(43,224,176,.35);box-shadow:var(--shadow)}
.svc-cell{margin-bottom:24px;display:flex}
.svc-media{border-radius:12px;overflow:hidden;margin:-4px 0 20px}
.svc-media img{width:100%;height:180px;object-fit:cover;transition:transform .3s var(--ease)}
.svc-card:hover .svc-media img{transform:scale(1.03)}
.svc-num{font-family:var(--font-mono);font-size:13px;color:var(--brand);letter-spacing:.08em;margin-bottom:12px}
.svc-card h3{margin-bottom:10px}
.svc-desc{font-size:14.5px;color:var(--t2);margin-bottom:18px}
.svc-card .link-arrow{margin-top:auto}
.svc-icon{width:34px;height:34px;color:var(--accent);margin-bottom:14px}

/* ---------- 结果对比 ---------- */
.compare{padding:var(--sec-y) 0;border-bottom:1px solid rgba(255,255,255,.06)}
.cmp-wrap{display:flex;align-items:stretch;gap:0;margin-top:8px}
.cmp-col{flex:1 1 0;padding:26px;border-radius:var(--r-card);border:1px solid var(--panel-line);background:rgba(255,255,255,.02)}
.cmp-col--right{border-color:rgba(43,224,176,.35);background:rgba(43,224,176,.06)}
.cmp-divider{width:1px;background:rgba(255,255,255,.08);margin:0 22px;flex:none}
.cmp-head{display:flex;align-items:center;justify-content:space-between;margin-bottom:22px;padding-bottom:14px;border-bottom:1px solid rgba(255,255,255,.07)}
.cmp-head h3{font-size:16px}
.cmp-col--left .cmp-head h3{color:var(--t3)}
.cmp-col--right .cmp-head h3{color:var(--t1)}
.cmp-row{margin-bottom:20px}
.cmp-row:last-child{margin-bottom:0}
.cmp-name{font-size:14px;color:var(--t2);margin-bottom:8px;display:flex;justify-content:space-between;gap:10px}
.cmp-col--left .cmp-name{color:var(--t3)}
.cmp-bar{height:6px;border-radius:4px;background:rgba(255,255,255,.06);overflow:hidden}
.cmp-bar i{display:block;height:100%;border-radius:4px;background:rgba(255,255,255,.16)}
.cmp-col--right .cmp-bar i{background:linear-gradient(to right,rgba(43,224,176,.55),var(--accent))}

/* ---------- 最新信息 ---------- */
.news{padding:var(--sec-y) 0;border-bottom:1px solid rgba(255,255,255,.06)}
.news-grid{display:flex;flex-wrap:wrap;margin:-12px}
.news-card{width:33.3333%;padding:12px;display:flex}
.news-card--feature{width:66.6666%}
.news-link{
  display:flex;flex-direction:column;width:100%;height:100%;
  border-radius:var(--r-card);overflow:hidden;
  background:var(--panel);backdrop-filter:blur(12px) saturate(120%);
  border:1px solid var(--panel-line);box-shadow:inset 0 1px 0 rgba(255,255,255,.07);
  transition:transform .2s var(--ease),border-color .2s var(--ease),box-shadow .2s var(--ease);
}
.news-link:hover{transform:translateY(-3px);border-color:rgba(43,224,176,.35);box-shadow:var(--shadow)}
.news-thumb{overflow:hidden;background:rgba(255,255,255,.03)}
.news-thumb img{width:100%;aspect-ratio:16/10;object-fit:cover;transition:transform .3s var(--ease)}
.news-link:hover .news-thumb img{transform:scale(1.03)}
.news-body{padding:20px 22px 22px;display:flex;flex-direction:column;flex:1}
.news-meta{display:flex;align-items:center;gap:12px;margin-bottom:12px;flex-wrap:wrap}
.news-meta time{font-family:var(--font-mono);font-size:12.5px;color:var(--t3)}
.news-title{
  font-size:17px;font-weight:600;color:var(--t1);margin-bottom:10px;
  display:-webkit-box;-webkit-line-clamp:2;-webkit-box-orient:vertical;overflow:hidden;
}
.news-link:hover .news-title{color:var(--accent)}
.news-desc{
  font-size:14px;color:var(--t2);margin:0;
  display:-webkit-box;-webkit-line-clamp:3;-webkit-box-orient:vertical;overflow:hidden;
}
.news-empty{
  display:flex;flex-direction:column;align-items:center;justify-content:center;gap:12px;
  padding:64px 24px;border-radius:var(--r-card);border:1px dashed rgba(255,255,255,.12);
  background:rgba(255,255,255,.02);text-align:center;
}
.news-empty svg{width:40px;height:40px;color:var(--t3)}
.news-empty p{font-size:14.5px;color:var(--t3);margin:0}

/* ---------- FAQ ---------- */
.faq{padding:var(--sec-y) 0;border-bottom:1px solid rgba(255,255,255,.06)}
.faq-list{max-width:860px;margin:0 auto}
.faq-item{border:1px solid rgba(255,255,255,.08);background:rgba(255,255,255,.03);border-radius:12px;margin-bottom:12px;overflow:hidden;transition:border-color .2s var(--ease)}
.faq-item.is-open{border-color:rgba(43,224,176,.32)}
.faq-q{
  display:flex;align-items:center;justify-content:space-between;gap:16px;width:100%;
  padding:18px 22px;background:transparent;border:0;cursor:pointer;text-align:left;
  font-size:16px;font-weight:600;color:var(--t1);min-height:44px;
}
.faq-icon{position:relative;width:16px;height:16px;flex:none;transition:transform .22s var(--ease)}
.faq-icon::before,.faq-icon::after{content:"";position:absolute;background:var(--accent);border-radius:2px}
.faq-icon::before{left:0;top:7px;width:16px;height:2px}
.faq-icon::after{left:7px;top:0;width:2px;height:16px}
.faq-item.is-open .faq-icon{transform:rotate(45deg)}
.faq-a{max-height:0;overflow:hidden;transition:max-height .22s var(--ease)}
.faq-a-inner{padding:0 22px 20px;font-size:15px;color:var(--t2)}
.faq-item.is-open .faq-a{max-height:420px}

/* ---------- CTA 表单 ---------- */
.cta{padding:var(--sec-y) 0}
.cta-panel{
  border-radius:var(--r-panel);background:var(--panel);backdrop-filter:blur(12px) saturate(120%);
  border:1px solid var(--panel-line);box-shadow:inset 0 1px 0 rgba(255,255,255,.07),var(--shadow);
  padding:clamp(24px,4vw,48px);
}
.cta-grid{display:flex;flex-wrap:wrap;margin:-16px}
.cta-grid>div{padding:16px}
.cta-form-col{width:58.3333%}
.cta-info-col{width:41.6666%}
.field{margin-bottom:18px}
.field label{display:block;font-size:14px;color:var(--t2);margin-bottom:8px}
.field label .req{color:var(--accent)}
.field input,.field select,.field textarea{
  width:100%;min-height:48px;padding:12px 14px;
  background:rgba(255,255,255,.03);border:1px solid var(--panel-line);border-radius:var(--r-input);
  color:var(--t1);font-size:15px;outline:none;
  transition:border-color .2s var(--ease),box-shadow .2s var(--ease),background-color .2s var(--ease);
}
.field textarea{min-height:120px;resize:vertical;line-height:1.8}
.field input::placeholder,.field textarea::placeholder{color:var(--t3)}
.field input:focus,.field select:focus,.field textarea:focus{border-color:var(--brand);box-shadow:0 0 0 3px rgba(76,111,255,.22);background:rgba(255,255,255,.05)}
.field.has-error input,.field.has-error select,.field.has-error textarea{border-color:var(--err)}
.field-error{display:none;margin-top:6px;font-size:12.5px;color:var(--err)}
.field.has-error .field-error{display:block}
.field select{appearance:none;background-image:linear-gradient(45deg,transparent 50%,var(--t3) 50%),linear-gradient(135deg,var(--t3) 50%,transparent 50%);background-position:calc(100% - 20px) 21px,calc(100% - 15px) 21px;background-size:5px 5px,5px 5px;background-repeat:no-repeat}
.field select option{background:var(--bg-1);color:var(--t1)}
.form-note{font-size:12.5px;color:var(--t3);margin-top:14px}
.form-ok{display:none;margin-top:14px;font-size:13.5px;color:var(--ok)}
.form-ok.is-show{display:block}
.cta-info{border-left:1px solid rgba(255,255,255,.08);padding-left:32px;height:100%}
.cta-info h3{margin-bottom:18px}
.info-item{padding-bottom:16px;margin-bottom:16px;border-bottom:1px solid rgba(255,255,255,.06)}
.info-item:last-child{border-bottom:0;margin-bottom:0;padding-bottom:0}
.info-item h4{font-size:15px;margin-bottom:6px}
.info-item p{font-size:14px;color:var(--t3);margin:0}

/* ---------- 页脚 ---------- */
.site-footer{border-top:1px solid rgba(255,255,255,.07);background:rgba(255,255,255,.02);padding:64px 0 24px;margin-top:0}
.foot-grid{display:flex;flex-wrap:wrap;margin:-16px}
.foot-col{padding:16px;width:25%}
.foot-col--brand{width:31%}
.foot-col--nav{width:23%}
.foot-brand{display:inline-flex;align-items:center;gap:10px;margin-bottom:16px}
.foot-brand .brand-mark{color:var(--accent)}
.foot-desc{font-size:14px;color:var(--t3);margin-bottom:16px;max-width:320px}
.foot-contact{font-size:14px;color:var(--t3);line-height:2}
.foot-contact strong{color:var(--t2);font-weight:600}
.foot-title{font-size:15px;color:var(--t1);font-weight:600;margin-bottom:16px}
.foot-links li{margin-bottom:10px}
.foot-links a{font-size:14px;color:var(--t3);transition:color .18s var(--ease)}
.foot-links a:hover{color:var(--t1);text-decoration:underline;text-underline-offset:3px}
.foot-bottom{margin-top:44px;padding-top:22px;border-top:1px solid rgba(255,255,255,.07);text-align:center;font-size:13px;color:var(--t3);display:flex;flex-wrap:wrap;gap:12px;align-items:center;justify-content:center}
.foot-bottom a{color:var(--t3)}
.foot-bottom a:hover{color:var(--t1);text-decoration:underline;text-underline-offset:3px}

/* ---------- 入场动效 ---------- */
.reveal{opacity:0;transform:translateY(12px);transition:opacity .5s var(--ease),transform .5s var(--ease)}
.reveal.is-in{opacity:1;transform:none}

/* ---------- 响应式 ---------- */
@media (max-width:1023px){
  .nav-pill,.nav-cta{display:none}
  .nav-toggle{display:inline-flex}
  .hero{padding-top:112px}
  .hero-visual{margin-top:36px;padding-bottom:0}
  .hero-stats{position:static;width:100%;flex-direction:row;margin-top:16px}
  .hero-stats .stat-card{flex:1;transform:none !important}
  .cta-form-col,.cta-info-col{width:100%}
  .cta-info{border-left:0;border-top:1px solid rgba(255,255,255,.08);padding-left:0;padding-top:26px;margin-top:8px}
  .cmp-wrap{flex-direction:column}
  .cmp-divider{width:100%;height:1px;margin:22px 0}
  .news-card,.news-card--feature{width:50%}
  .foot-col,.foot-col--brand,.foot-col--nav{width:50%}
}
@media (max-width:639px){
  :root{--sec-y:56px}
  .hero-media img{height:220px}
  .hero-stats{flex-direction:column}
  .hero-actions .btn{width:100%}
  .metrics-row{flex-wrap:wrap}
  .metric{flex:0 0 50%;min-width:0;border-left:0;border-top:1px solid rgba(255,255,255,.08);padding:18px 0 4px}
  .metric:nth-child(1),.metric:nth-child(2){border-top:0;padding-top:0}
  .metric:nth-child(odd){padding-right:14px}
  .metric:nth-child(even){padding-left:14px}
  .news-card,.news-card--feature{width:100%}
  .foot-col,.foot-col--brand,.foot-col--nav{width:100%}
  .svc-cell{margin-bottom:18px}
}
@media (prefers-reduced-motion:reduce){
  *{transition-duration:.01ms !important;animation-duration:.01ms !important}
  html{scroll-behavior:auto}
  .reveal{opacity:1;transform:none}
}

/* roulang page: article */
:root{
  --bg-0:#050A14;
  --bg-1:#0A1224;
  --panel:rgba(255,255,255,.045);
  --panel-line:rgba(255,255,255,.09);
  --brand:#4C6FFF;
  --accent:#2BE0B0;
  --warn:#FFB45C;
  --t1:#EAF0FF;
  --t2:#A8B6D4;
  --t3:#6C7B9C;
  --ok:#35D07F;
  --err:#FF6B7A;
  --r-card:16px;
  --r-panel:20px;
  --r-btn:10px;
  --r-input:10px;
  --r-badge:6px;
  --shadow:0 18px 44px rgba(0,0,0,.45);
  --hair:rgba(255,255,255,.06);
  --ease:cubic-bezier(.2,.7,.3,1);
  --dur:180ms;
  --sect:88px;
  --font-body:"PingFang SC","HarmonyOS Sans SC","Microsoft YaHei",system-ui,-apple-system,"Segoe UI",Roboto,sans-serif;
  --font-mono:ui-monospace,"JetBrains Mono","Roboto Mono",Menlo,Consolas,monospace;
}
*,*::before,*::after{box-sizing:border-box;}
html{-webkit-text-size-adjust:100%;scroll-behavior:smooth;}
body{
  margin:0;
  font-family:var(--font-body);
  font-size:16px;
  line-height:1.85;
  color:var(--t2);
  background-color:var(--bg-0);
  background-image:
    radial-gradient(closest-side,rgba(43,224,176,.14),transparent),
    repeating-linear-gradient(to right,rgba(255,255,255,.028) 0 1px,transparent 1px 48px),
    repeating-linear-gradient(to bottom,rgba(255,255,255,.028) 0 1px,transparent 1px 48px);
  background-size:620px 620px,48px 48px,48px 48px;
  background-position:right -140px top -160px,0 0,0 0;
  background-repeat:no-repeat,repeat,repeat;
  overflow-x:hidden;
}
body.is-locked{overflow:hidden;}
h1,h2,h3,h4{color:var(--t1);margin:0;font-weight:700;line-height:1.3;}
p{margin:0 0 18px;}
a{color:var(--accent);text-decoration:none;transition:color var(--dur) var(--ease),border-color var(--dur) var(--ease);}
a:hover{color:#7CF2D4;}
img{max-width:100%;height:auto;display:block;}
ul,ol{margin:0;padding:0;list-style:none;}
button{font-family:inherit;}
::selection{background:rgba(76,111,255,.4);color:#fff;}
::-webkit-scrollbar{width:10px;height:10px;}
::-webkit-scrollbar-track{background:var(--bg-0);}
::-webkit-scrollbar-thumb{background:rgba(255,255,255,.14);border-radius:8px;}
::-webkit-scrollbar-thumb:hover{background:rgba(255,255,255,.22);}
:focus-visible{outline:2px solid var(--accent);outline-offset:3px;border-radius:4px;}
.grid-container{max-width:1240px;margin:0 auto;padding-left:24px;padding-right:24px;width:100%;}
@media (min-width:1024px){.grid-container{padding-left:40px;padding-right:40px;}}
@media (min-width:1536px){.grid-container{max-width:1280px;}}
@media (max-width:639px){.grid-container{padding-left:18px;padding-right:18px;}}

/* ===== Header ===== */
.site-header{
  position:fixed;top:0;left:0;right:0;z-index:900;
  height:72px;
  display:flex;align-items:center;
  background:transparent;
  border-bottom:1px solid transparent;
  transition:height var(--dur) var(--ease),background-color var(--dur) var(--ease),border-color var(--dur) var(--ease);
}
.site-header.is-scrolled{
  height:60px;
  background:rgba(5,10,20,.82);
  backdrop-filter:blur(14px);
  -webkit-backdrop-filter:blur(14px);
  border-bottom:1px solid rgba(255,255,255,.07);
}
.header-inner{display:flex;align-items:center;justify-content:space-between;gap:20px;}
.brand{display:inline-flex;align-items:center;gap:10px;min-height:44px;color:var(--t1);}
.brand:hover{color:var(--t1);}
.brand-mark{width:22px;height:22px;color:var(--accent);flex:0 0 auto;}
.brand-name{font-size:18px;font-weight:700;letter-spacing:.01em;white-space:nowrap;}
.nav-pill{
  display:flex;align-items:center;gap:2px;
  padding:4px;border-radius:999px;
  background:rgba(255,255,255,.04);
  border:1px solid var(--panel-line);
}
.nav-link{
  display:inline-flex;align-items:center;
  min-height:38px;padding:0 16px;border-radius:999px;
  font-size:14.5px;color:var(--t2);white-space:nowrap;
  transition:color var(--dur) var(--ease),background-color var(--dur) var(--ease),border-color var(--dur) var(--ease);
}
.nav-link:hover{color:var(--t1);background:rgba(255,255,255,.05);}
.nav-link.is-active{
  color:var(--t1);
  background:rgba(76,111,255,.22);
  border:1px solid rgba(76,111,255,.6);
}
.header-actions{display:flex;align-items:center;gap:12px;}
.btn-glow{
  display:inline-flex;align-items:center;justify-content:center;
  min-height:44px;padding:0 22px;border-radius:999px;
  font-size:15px;font-weight:600;letter-spacing:.01em;
  color:var(--accent);
  background:rgba(43,224,176,.08);
  border:1px solid rgba(43,224,176,.55);
  cursor:pointer;
  transition:background-color var(--dur) var(--ease),box-shadow var(--dur) var(--ease),color var(--dur) var(--ease),transform var(--dur) var(--ease);
}
.btn-glow:hover{
  color:#D6FFF4;
  background:rgba(43,224,176,.16);
  box-shadow:0 0 24px rgba(43,224,176,.35);
}
.btn-glow:active{transform:scale(.98);}
.btn-glow--sm{min-height:40px;padding:0 18px;font-size:14px;}
.ghost-btn{
  display:inline-flex;align-items:center;justify-content:center;
  min-height:44px;padding:0 22px;border-radius:var(--r-btn);
  font-size:15px;font-weight:500;color:var(--t1);
  background:transparent;border:1px solid var(--panel-line);cursor:pointer;
  transition:border-color var(--dur) var(--ease),background-color var(--dur) var(--ease),transform var(--dur) var(--ease);
}
.ghost-btn:hover{border-color:rgba(43,224,176,.5);background:rgba(255,255,255,.04);}
.ghost-btn:active{transform:scale(.98);}
.nav-toggle{
  display:none;
  width:44px;height:44px;border-radius:12px;
  border:1px solid var(--panel-line);background:rgba(255,255,255,.04);
  align-items:center;justify-content:center;cursor:pointer;
}
.nav-toggle span{display:block;width:18px;height:1.6px;background:var(--t1);position:relative;}
.nav-toggle span::before,.nav-toggle span::after{
  content:"";position:absolute;left:0;width:18px;height:1.6px;background:var(--t1);
}
.nav-toggle span::before{top:-6px;}
.nav-toggle span::after{top:6px;}

/* ===== Drawer ===== */
.drawer-mask{
  position:fixed;inset:0;z-index:940;
  background:rgba(0,0,0,.62);
  opacity:0;visibility:hidden;
  transition:opacity var(--dur) var(--ease),visibility var(--dur) var(--ease);
}
.drawer-mask.is-open{opacity:1;visibility:visible;}
.nav-drawer{
  position:fixed;top:0;right:0;bottom:0;z-index:950;
  width:84vw;max-width:360px;
  padding:20px 22px 32px;
  background:rgba(10,18,36,.94);
  backdrop-filter:blur(14px) saturate(120%);
  -webkit-backdrop-filter:blur(14px) saturate(120%);
  border-left:1px solid var(--panel-line);
  transform:translateX(102%);
  transition:transform 220ms var(--ease);
  display:flex;flex-direction:column;gap:8px;overflow-y:auto;
}
.nav-drawer.is-open{transform:translateX(0);}
.drawer-head{display:flex;align-items:center;justify-content:space-between;margin-bottom:10px;}
.drawer-title{font-size:15px;font-weight:700;color:var(--t1);}
.drawer-close{
  width:44px;height:44px;border-radius:12px;
  border:1px solid var(--panel-line);background:rgba(255,255,255,.04);
  color:var(--t1);font-size:20px;line-height:1;cursor:pointer;
}
.drawer-link{
  display:flex;align-items:center;
  min-height:48px;padding:0 14px;border-radius:10px;
  color:var(--t2);font-size:15.5px;
  border-left:2px solid transparent;
}
.drawer-link:hover{color:var(--t1);background:rgba(255,255,255,.05);}
.drawer-link.is-active{color:var(--t1);border-left-color:var(--accent);background:rgba(255,255,255,.05);}
.drawer-sep{height:1px;background:var(--hair);margin:14px 0;}
.drawer-info{font-size:13.5px;color:var(--t3);line-height:2;}
.drawer-info strong{color:var(--t2);font-weight:600;}

@media (max-width:1023px){
  .nav-pill,.header-actions .btn-glow{display:none;}
  .nav-toggle{display:flex;}
}
@media (min-width:1024px){
  .nav-drawer,.drawer-mask{display:none;}
}

/* ===== Breadcrumb ===== */
.crumb-bar{padding-top:104px;}
.breadcrumb{
  display:flex;flex-wrap:wrap;align-items:center;gap:8px;
  font-size:13px;color:var(--t3);
  font-family:var(--font-mono);
  letter-spacing:.01em;
}
.breadcrumb a{color:var(--t3);}
.breadcrumb a:hover{color:var(--accent);}
.breadcrumb .sep{color:rgba(255,255,255,.18);}
.breadcrumb .cur{color:var(--t1);font-family:var(--font-body);}

/* ===== Article head ===== */
.article-head{padding:28px 0 0;}
.badge{
  display:inline-flex;align-items:center;
  padding:4px 10px;border-radius:var(--r-badge);
  font-size:12.5px;letter-spacing:.06em;
  color:var(--warn);background:rgba(255,180,92,.14);
  border:1px solid rgba(255,180,92,.24);
}
.article-title{
  font-size:clamp(26px,3.2vw,40px);
  line-height:1.28;
  margin:18px 0 20px;
  max-width:900px;
  letter-spacing:.01em;
}
.meta-row{
  display:flex;flex-wrap:wrap;align-items:center;gap:10px 22px;
  font-size:13px;color:var(--t3);
}
.meta-row .mono{font-family:var(--font-mono);letter-spacing:.02em;}
.meta-row .dot{width:4px;height:4px;border-radius:50%;background:rgba(255,255,255,.2);}
.hr-line{height:1px;background:var(--hair);margin:30px 0 0;}

/* ===== Layout ===== */
.article-layout{
  display:grid;
  grid-template-columns:minmax(0,740px);
  justify-content:center;
  gap:56px;
  padding-top:44px;
  padding-bottom:var(--sect);
}
@media (min-width:1280px){
  .article-layout{grid-template-columns:minmax(0,740px) 220px;}
}
.article-toc{display:none;}
@media (min-width:1280px){
  .article-toc{display:block;position:sticky;top:104px;align-self:start;}
}
.toc-title{
  font-size:12.5px;letter-spacing:.06em;color:var(--t3);
  text-transform:uppercase;margin-bottom:14px;
  padding-left:12px;position:relative;
}
.toc-title::before{
  content:"";position:absolute;left:0;top:2px;width:2px;height:14px;background:var(--accent);border-radius:2px;
}
.toc-list{border-left:1px solid var(--panel-line);}
.toc-list li a{
  display:block;padding:7px 0 7px 14px;margin-left:-1px;
  border-left:1px solid transparent;
  font-size:13.5px;color:var(--t3);line-height:1.6;
  transition:color var(--dur) var(--ease),border-color var(--dur) var(--ease);
}
.toc-list li a:hover{color:var(--t1);border-left-color:var(--accent);}

/* ===== Article body ===== */
.article-body{font-size:16px;line-height:1.95;color:var(--t2);}
.article-body > *:first-child{margin-top:0;}
.article-body p{margin:0 0 20px;}
.article-body h2{
  font-size:24px;line-height:1.45;margin:44px 0 16px;
  padding-left:14px;position:relative;
}
.article-body h2::before{
  content:"";position:absolute;left:0;top:7px;width:3px;height:20px;
  background:var(--accent);border-radius:2px;
}
.article-body h3{font-size:19px;margin:32px 0 12px;}
.article-body h4{font-size:17px;margin:26px 0 10px;}
.article-body ul,.article-body ol{margin:0 0 20px;padding-left:22px;}
.article-body ul li{position:relative;padding-left:16px;margin-bottom:10px;list-style:none;}
.article-body ul li::before{
  content:"";position:absolute;left:0;top:12px;width:5px;height:5px;border-radius:50%;
  background:var(--accent);opacity:.75;
}
.article-body ol{list-style:decimal;}
.article-body ol li{margin-bottom:10px;padding-left:6px;}
.article-body ol li::marker{color:var(--accent);font-family:var(--font-mono);}
.article-body blockquote{
  margin:26px 0;padding:18px 22px;
  border-left:3px solid var(--accent);
  background:rgba(43,224,176,.06);
  border-radius:0 10px 10px 0;
  color:var(--t1);
}
.article-body blockquote p:last-child{margin-bottom:0;}
.article-body a{color:var(--accent);text-decoration:underline;text-underline-offset:3px;}
.article-body a:hover{color:#7CF2D4;}
.article-body img{border-radius:var(--r-card);margin:24px 0 8px;width:100%;}
.article-body figcaption,.article-body em.cap{
  display:block;font-size:13px;color:var(--t3);margin-bottom:24px;
}
.article-body strong{color:var(--t1);font-weight:600;}
.article-body code{
  font-family:var(--font-mono);font-size:14px;
  background:rgba(255,255,255,.06);padding:2px 6px;border-radius:5px;color:var(--t1);
}
.article-body hr{border:none;height:1px;background:var(--hair);margin:34px 0;}

/* ===== Empty ===== */
.empty-state{
  padding:64px 24px;text-align:center;
  background:var(--panel);
  border:1px solid var(--panel-line);
  border-radius:var(--r-panel);
  backdrop-filter:blur(12px) saturate(120%);
  -webkit-backdrop-filter:blur(12px) saturate(120%);
  box-shadow:inset 0 1px 0 rgba(255,255,255,.07);
}
.empty-state svg{width:40px;height:40px;color:var(--t3);margin:0 auto 16px;}
.empty-state p{color:var(--t2);margin-bottom:12px;}
.empty-state a{font-weight:600;}

/* ===== Related ===== */
.related{margin-top:52px;}
.section-head{margin-bottom:24px;}
.section-head h2{
  font-size:22px;display:flex;align-items:center;gap:12px;
}
.section-head h2::before{
  content:"";width:3px;height:18px;background:var(--accent);border-radius:2px;flex:0 0 auto;
}
.related-grid{display:grid;grid-template-columns:1fr;gap:16px;}
@media (min-width:768px){.related-grid{grid-template-columns:repeat(3,1fr);}}
.related-card{
  display:flex;flex-direction:column;
  padding:20px;
  background:var(--panel);
  border:1px solid var(--panel-line);
  border-radius:var(--r-card);
  backdrop-filter:blur(12px) saturate(120%);
  -webkit-backdrop-filter:blur(12px) saturate(120%);
  box-shadow:inset 0 1px 0 rgba(255,255,255,.07);
  transition:transform var(--dur) var(--ease),border-color var(--dur) var(--ease),background-color var(--dur) var(--ease);
}
.related-card:hover{
  transform:translateY(-3px);
  border-color:rgba(43,224,176,.34);
  background:rgba(255,255,255,.06);
}
.related-card h3{font-size:16px;line-height:1.6;margin-bottom:10px;}
.related-card p{font-size:14px;line-height:1.75;color:var(--t2);margin-bottom:16px;}
.related-card .date{font-family:var(--font-mono);font-size:12.5px;color:var(--t3);margin-top:auto;}
.text-link{
  display:inline-flex;align-items:center;gap:8px;
  min-height:44px;font-size:14.5px;font-weight:600;color:var(--accent);
}
.text-link:hover{text-decoration:underline;text-underline-offset:4px;}
.text-link::after{content:"→";transition:transform var(--dur) var(--ease);}
.text-link:hover::after{transform:translateX(4px);}

/* ===== Footer ===== */
.site-footer{
  margin-top:var(--sect);
  background:rgba(255,255,255,.02);
  border-top:1px solid var(--hair);
  padding:64px 0 0;
}
.foot-grid{display:grid;grid-template-columns:1fr;gap:36px;}
@media (min-width:768px){.foot-grid{grid-template-columns:repeat(2,1fr);}}
@media (min-width:1024px){.foot-grid{grid-template-columns:1.6fr 1fr 1fr 1fr;gap:28px;}}
.foot-brand{display:inline-flex;align-items:center;gap:10px;color:var(--t1);margin-bottom:14px;}
.foot-brand:hover{color:var(--t1);}
.foot-desc{font-size:14px;color:var(--t3);line-height:1.9;max-width:320px;margin-bottom:18px;}
.foot-contact{font-size:13.5px;color:var(--t3);line-height:2.1;}
.foot-contact strong{display:inline-block;min-width:66px;color:var(--t2);font-weight:600;}
.foot-title{font-size:14px;font-weight:700;color:var(--t1);margin-bottom:16px;}
.foot-links li{margin-bottom:10px;}
.foot-links a{font-size:14px;color:var(--t3);}
.foot-links a:hover{color:var(--t1);text-decoration:underline;text-underline-offset:3px;}
.foot-bottom{
  margin-top:52px;
  border-top:1px solid var(--hair);
  padding:22px 0 30px;
  display:flex;flex-wrap:wrap;justify-content:center;align-items:center;gap:10px;
  font-size:13px;color:var(--t3);text-align:center;
}
.foot-bottom a{color:var(--t3);}
.foot-bottom a:hover{color:var(--t1);text-decoration:underline;text-underline-offset:3px;}

/* ===== Reveal ===== */
.reveal{opacity:0;transform:translateY(12px);transition:opacity 420ms var(--ease),transform 420ms var(--ease);}
.reveal.is-in{opacity:1;transform:translateY(0);}
@media (prefers-reduced-motion:reduce){
  .reveal{opacity:1;transform:none;transition:none;}
  html{scroll-behavior:auto;}
  *{transition-duration:.01ms !important;}
}

/* roulang page: category1 */
:root{
  --bg-0:#050A14;
  --bg-1:#0A1224;
  --panel:rgba(255,255,255,.045);
  --panel-line:rgba(255,255,255,.09);
  --panel-soft:rgba(255,255,255,.03);
  --line:rgba(255,255,255,.06);
  --line-strong:rgba(255,255,255,.08);
  --brand:#4C6FFF;
  --brand-soft:rgba(76,111,255,.22);
  --accent:#2BE0B0;
  --accent-soft:rgba(43,224,176,.14);
  --accent-line:rgba(43,224,176,.2);
  --warn:#FFB45C;
  --warn-soft:rgba(255,180,92,.14);
  --t1:#EAF0FF;
  --t2:#A8B6D4;
  --t3:#6C7B9C;
  --ok:#35D07F;
  --err:#FF6B7A;
  --r-card:16px;
  --r-panel:20px;
  --r-input:10px;
  --r-badge:6px;
  --shadow:0 18px 44px rgba(0,0,0,.45);
  --section-y:88px;
  --ease:cubic-bezier(.2,.7,.3,1);
  --font-body:"PingFang SC","HarmonyOS Sans SC","Microsoft YaHei",system-ui,-apple-system,"Segoe UI",sans-serif;
  --font-mono:ui-monospace,"JetBrains Mono","Roboto Mono",Menlo,Consolas,monospace;
}
*,*::before,*::after{box-sizing:border-box;}
html{-webkit-text-size-adjust:100%;scroll-behavior:smooth;}
body{
  margin:0;
  font-family:var(--font-body);
  font-size:16px;
  line-height:1.85;
  font-weight:400;
  color:var(--t2);
  background-color:var(--bg-0);
  background-image:
    radial-gradient(closest-side,rgba(43,224,176,.14),transparent) ,
    repeating-linear-gradient(to right,rgba(255,255,255,.028) 0 1px,transparent 1px 48px),
    repeating-linear-gradient(to bottom,rgba(255,255,255,.028) 0 1px,transparent 1px 48px);
  background-repeat:no-repeat,repeat,repeat;
  background-position:top right,0 0,0 0;
  background-size:620px 620px,auto,auto;
  overflow-x:hidden;
}
img{max-width:100%;display:block;height:auto;}
a{color:var(--accent);text-decoration:none;transition:color .18s var(--ease),border-color .18s var(--ease),background-color .18s var(--ease),transform .18s var(--ease);}
a:hover{color:var(--t1);}
h1,h2,h3,h4{color:var(--t1);margin:0;font-family:var(--font-body);font-weight:700;}
h1{font-size:clamp(30px,4.4vw,54px);line-height:1.18;letter-spacing:.01em;}
h2{font-size:clamp(24px,2.9vw,36px);line-height:1.28;}
h3{font-size:20px;font-weight:600;line-height:1.45;}
h4{font-size:17px;font-weight:600;}
p{margin:0 0 18px;color:var(--t2);}
ul,ol{margin:0;padding:0;list-style:none;}
button{font-family:inherit;}
:focus-visible{outline:2px solid var(--accent);outline-offset:2px;}
::selection{background:rgba(43,224,176,.28);color:var(--t1);}
::-webkit-scrollbar{width:10px;height:10px;}
::-webkit-scrollbar-track{background:#070d1a;}
::-webkit-scrollbar-thumb{background:rgba(255,255,255,.14);border-radius:8px;}
::-webkit-scrollbar-thumb:hover{background:rgba(255,255,255,.24);}

.grid-container{max-width:1240px;margin:0 auto;padding-left:24px;padding-right:24px;}
@media (min-width:1024px){.grid-container{padding-left:40px;padding-right:40px;}}
@media (min-width:1536px){.grid-container{max-width:1280px;}}
@media (max-width:640px){.grid-container{padding-left:18px;padding-right:18px;}}

/* ---------- header ---------- */
.site-header{
  position:fixed;top:0;left:0;right:0;z-index:60;
  height:72px;
  display:flex;align-items:center;
  background:transparent;
  border-bottom:1px solid transparent;
  transition:height .2s var(--ease),background-color .2s var(--ease),border-color .2s var(--ease);
}
.site-header.is-scrolled{
  height:60px;
  background:rgba(5,10,20,.82);
  -webkit-backdrop-filter:blur(14px);backdrop-filter:blur(14px);
  border-bottom-color:rgba(255,255,255,.07);
}
.header-inner{display:flex;align-items:center;justify-content:space-between;gap:20px;width:100%;}
.brand{display:inline-flex;align-items:center;gap:10px;min-height:44px;color:var(--t1);}
.brand-mark{width:20px;height:20px;color:var(--accent);flex:none;}
.brand-name{font-size:18px;font-weight:700;letter-spacing:.01em;color:var(--t1);}
.nav-pill{
  display:flex;align-items:center;gap:2px;
  padding:4px;border-radius:999px;
  background:rgba(255,255,255,.04);
  border:1px solid rgba(255,255,255,.06);
}
.nav-link{
  display:inline-flex;align-items:center;
  min-height:40px;padding:0 16px;border-radius:999px;
  font-size:14.5px;color:var(--t2);
  border:1px solid transparent;
  transition:color .18s var(--ease),background-color .18s var(--ease),border-color .18s var(--ease);
}
.nav-link:hover{color:var(--t1);background:rgba(255,255,255,.05);}
.nav-link.is-active{
  color:var(--t1);
  background:var(--brand-soft);
  border-color:var(--brand);
}
.header-cta{
  display:inline-flex;align-items:center;justify-content:center;
  min-height:44px;padding:0 20px;border-radius:999px;
  font-size:14.5px;color:var(--accent);
  border:1px solid var(--accent);
  background:transparent;
  transition:background-color .18s var(--ease),box-shadow .18s var(--ease),color .18s var(--ease);
}
.header-cta:hover{color:var(--accent);background:rgba(43,224,176,.1);box-shadow:0 0 24px rgba(43,224,176,.35);}
.nav-toggle{
  display:none;width:44px;height:44px;align-items:center;justify-content:center;
  border-radius:12px;border:1px solid var(--panel-line);background:var(--panel);cursor:pointer;
}
.nav-toggle span{display:block;width:18px;height:2px;background:var(--t1);position:relative;}
.nav-toggle span::before,.nav-toggle span::after{content:"";position:absolute;left:0;width:18px;height:2px;background:var(--t1);}
.nav-toggle span::before{top:-6px;}
.nav-toggle span::after{top:6px;}

/* ---------- drawer ---------- */
.drawer-mask{
  position:fixed;inset:0;background:rgba(0,0,0,.62);opacity:0;visibility:hidden;z-index:70;
  transition:opacity .2s var(--ease),visibility .2s var(--ease);
}
.drawer-mask.is-open{opacity:1;visibility:visible;}
.drawer{
  position:fixed;top:0;right:0;bottom:0;width:84vw;max-width:360px;z-index:80;
  background:rgba(10,18,36,.92);
  -webkit-backdrop-filter:blur(12px) saturate(120%);backdrop-filter:blur(12px) saturate(120%);
  border-left:1px solid var(--panel-line);
  transform:translateX(102%);
  transition:transform .22s var(--ease);
  padding:20px;display:flex;flex-direction:column;gap:8px;overflow-y:auto;
}
.drawer.is-open{transform:translateX(0);}
.drawer-head{display:flex;align-items:center;justify-content:space-between;margin-bottom:8px;}
.drawer-close{
  width:44px;height:44px;border-radius:12px;border:1px solid var(--panel-line);
  background:transparent;color:var(--t1);font-size:18px;cursor:pointer;line-height:1;
}
.drawer-link{
  display:flex;align-items:center;height:48px;padding:0 12px;border-radius:10px;
  font-size:15px;color:var(--t2);border-left:2px solid transparent;
}
.drawer-link:hover{color:var(--t1);background:rgba(255,255,255,.04);}
.drawer-link.is-active{color:var(--t1);border-left-color:var(--accent);background:rgba(255,255,255,.04);}
.drawer-sep{height:1px;background:var(--panel-line);margin:10px 0;}
.drawer-meta{font-size:13px;color:var(--t3);line-height:2;}
.drawer-cta{
  margin-top:auto;display:flex;align-items:center;justify-content:center;min-height:48px;
  border-radius:999px;border:1px solid var(--accent);color:var(--accent);font-size:15px;
  background:rgba(43,224,176,.08);
}

/* ---------- generic ---------- */
.section{padding:var(--section-y) 0;border-top:1px solid var(--line);}
.section--first{border-top:none;}
.eyebrow{
  display:inline-flex;align-items:center;gap:10px;
  font-size:12.5px;letter-spacing:.06em;color:var(--t3);text-transform:uppercase;
  font-family:var(--font-mono);
}
.section-head{display:flex;align-items:flex-end;justify-content:space-between;gap:24px;flex-wrap:wrap;margin-bottom:36px;}
.section-title{position:relative;padding-left:16px;}
.section-title::before{content:"";position:absolute;left:0;top:.22em;width:2px;height:18px;background:var(--accent);}
.section-note{font-size:15px;color:var(--t3);max-width:560px;margin:10px 0 0;}
.textlink{
  display:inline-flex;align-items:center;gap:6px;font-size:14.5px;color:var(--accent);
  border-bottom:1px solid transparent;min-height:44px;
}
.textlink:hover{color:var(--accent);border-bottom-color:var(--accent);transform:translateX(4px);}
.btn{
  display:inline-flex;align-items:center;justify-content:center;gap:8px;
  min-height:48px;padding:0 26px;border-radius:999px;
  font-size:15px;font-weight:600;cursor:pointer;border:1px solid transparent;
  transition:background-color .18s var(--ease),border-color .18s var(--ease),box-shadow .18s var(--ease),color .18s var(--ease),transform .18s var(--ease);
}
.btn:active{transform:scale(.98);}
.btn--primary{background:var(--brand);color:#fff;box-shadow:0 0 0 rgba(43,224,176,0);}
.btn--primary:hover{background:#3E60EE;color:#fff;box-shadow:0 0 24px rgba(43,224,176,.28);}
.btn--ghost{border-color:var(--panel-line);color:var(--t1);background:rgba(255,255,255,.02);border-radius:10px;}
.btn--ghost:hover{border-color:var(--accent);color:var(--accent);background:rgba(43,224,176,.06);}
.badge{
  display:inline-flex;align-items:center;height:24px;padding:0 9px;border-radius:var(--r-badge);
  background:var(--warn-soft);color:var(--warn);font-size:12.5px;letter-spacing:.02em;
}
.badge--brand{background:rgba(76,111,255,.18);color:#9FB4FF;}
.mono{font-family:var(--font-mono);}
.glass{
  background:var(--panel);
  -webkit-backdrop-filter:blur(12px) saturate(120%);backdrop-filter:blur(12px) saturate(120%);
  border:1px solid var(--panel-line);
  box-shadow:inset 0 1px 0 rgba(255,255,255,.07),var(--shadow);
}
.reveal{opacity:0;transform:translateY(12px);transition:opacity .5s var(--ease),transform .5s var(--ease);}
.reveal.is-in{opacity:1;transform:none;}

/* ---------- crumbs ---------- */
.crumbs{padding-top:96px;font-size:13px;color:var(--t3);}
.crumbs ol{display:flex;flex-wrap:wrap;gap:8px;align-items:center;}
.crumbs li{display:flex;align-items:center;gap:8px;}
.crumbs li::after{content:"/";color:var(--t3);}
.crumbs li:last-child::after{content:"";}
.crumbs a{color:var(--t3);}
.crumbs a:hover{color:var(--t1);}
.crumbs .current{color:var(--t1);}

/* ---------- hero (category A: compact) ---------- */
.cat-hero{padding:28px 0 56px;}
.cat-hero h1{max-width:900px;margin-bottom:18px;}
.cat-hero h1 .hl{color:var(--accent);}
.cat-hero-lead{max-width:660px;font-size:16.5px;color:var(--t2);margin-bottom:26px;}
.cat-hero-meta{display:flex;flex-wrap:wrap;gap:10px 28px;align-items:center;font-size:13.5px;color:var(--t3);}
.cat-hero-meta span{display:inline-flex;align-items:center;gap:8px;}
.cat-hero-meta .dot{width:6px;height:6px;border-radius:50%;background:var(--accent);display:inline-block;}
.anchor-bar{
  margin-top:30px;display:flex;flex-wrap:wrap;gap:8px;
  padding:8px;border-radius:999px;border:1px solid var(--panel-line);
  background:rgba(255,255,255,.03);width:fit-content;max-width:100%;
}
.anchor-bar a{
  display:inline-flex;align-items:center;min-height:38px;padding:0 16px;border-radius:999px;
  font-size:13.5px;color:var(--t2);border:1px solid transparent;
}
.anchor-bar a:hover{color:var(--t1);background:rgba(255,255,255,.05);border-color:var(--panel-line);}

/* ---------- list + sticky anchor ---------- */
.list-wrap{display:grid;grid-template-columns:5fr 7fr;gap:40px;align-items:start;}
.sticky-side{position:sticky;top:96px;}
.side-panel{border-radius:var(--r-panel);padding:24px;}
.side-title{font-size:13px;letter-spacing:.06em;color:var(--t3);font-family:var(--font-mono);margin-bottom:14px;}
.side-nav li+li{margin-top:4px;}
.side-nav a{
  display:flex;align-items:center;gap:10px;min-height:44px;padding:0 12px;border-radius:10px;
  font-size:14.5px;color:var(--t2);border-left:2px solid transparent;
}
.side-nav a:hover{color:var(--t1);background:rgba(255,255,255,.04);}
.side-nav a.is-active{color:var(--t1);border-left-color:var(--accent);background:rgba(255,255,255,.04);}
.side-nav .idx{font-family:var(--font-mono);font-size:12.5px;color:var(--t3);}
.side-stat{margin-top:22px;padding-top:18px;border-top:1px solid var(--panel-line);}
.side-stat .num{font-family:var(--font-mono);font-size:30px;font-weight:700;color:var(--accent);line-height:1.2;}
.side-stat .lab{font-size:13px;color:var(--t3);}

.item-list{display:grid;gap:16px;}
.item-card{
  border-radius:var(--r-card);padding:24px 26px;
  transition:transform .18s var(--ease),border-color .18s var(--ease),box-shadow .18s var(--ease);
}
.item-card:hover{transform:translateY(-3px);border-color:var(--accent-line);}
.item-top{display:flex;align-items:center;gap:14px;margin-bottom:10px;}
.item-no{font-family:var(--font-mono);font-size:13px;color:var(--accent);letter-spacing:.04em;}
.item-card h3{margin-bottom:8px;}
.item-card p{margin-bottom:12px;font-size:15px;color:var(--t2);}
.item-tags{display:flex;flex-wrap:wrap;gap:8px;margin-bottom:14px;}

/* ---------- timeline ---------- */
.timeline{position:relative;margin-top:8px;padding-left:28px;}
.timeline::before{content:"";position:absolute;left:5px;top:6px;bottom:6px;width:2px;background:rgba(255,255,255,.12);}
.tl-item{position:relative;padding:0 0 34px 0;}
.tl-item:last-child{padding-bottom:0;}
.tl-item::before{
  content:"";position:absolute;left:-28px;top:8px;width:12px;height:12px;border-radius:50%;
  background:var(--accent);box-shadow:0 0 0 4px rgba(43,224,176,.14);
}
.tl-time{font-family:var(--font-mono);font-size:12.5px;color:var(--t3);letter-spacing:.04em;}
.tl-item h4{margin:6px 0 6px;}
.tl-item p{margin:0;font-size:15px;}

/* ---------- compare strip ---------- */
.check-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:24px;}
.check-card{border-radius:var(--r-card);padding:26px 24px;display:flex;flex-direction:column;height:100%;}
.check-card .icon{
  width:40px;height:40px;border-radius:12px;display:flex;align-items:center;justify-content:center;
  border:1px solid var(--accent-line);color:var(--accent);background:rgba(43,224,176,.07);margin-bottom:16px;
}
.check-card h3{margin-bottom:10px;font-size:18px;}
.check-card p{font-size:14.6px;margin-bottom:16px;}
.check-card ul{margin-top:auto;display:grid;gap:8px;}
.check-card li{font-size:14px;color:var(--t2);padding-left:18px;position:relative;}
.check-card li::before{content:"";position:absolute;left:0;top:.72em;width:6px;height:1px;background:var(--accent);}

/* ---------- cta strip ---------- */
.cta-strip{
  border-radius:var(--r-panel);padding:40px;display:grid;grid-template-columns:8fr 4fr;gap:32px;align-items:center;
}
.cta-strip h2{margin-bottom:12px;}
.cta-strip p{margin:0;max-width:640px;font-size:15.4px;}
.cta-actions{display:flex;flex-direction:column;gap:12px;justify-content:center;}
.cta-actions .btn{width:100%;}
.cta-actions .btn--ghost{border-radius:999px;}

/* ---------- footer ---------- */
.site-footer{border-top:1px solid var(--line);background:rgba(255,255,255,.02);padding:64px 0 0;margin-top:0;}
.foot-grid{display:grid;grid-template-columns:1.5fr 1fr 1fr 1fr;gap:36px;}
.foot-brand{display:inline-flex;align-items:center;gap:10px;margin-bottom:14px;color:var(--t1);}
.foot-desc{font-size:14px;color:var(--t3);max-width:320px;}
.foot-contact{margin-top:16px;display:grid;gap:8px;font-size:13.5px;color:var(--t3);}
.foot-contact strong{color:var(--t2);font-weight:600;margin-right:6px;}
.foot-title{font-size:13px;letter-spacing:.06em;color:var(--t1);margin-bottom:16px;font-family:var(--font-mono);}
.foot-links li+li{margin-top:8px;}
.foot-links a{font-size:14px;color:var(--t3);display:inline-block;min-height:32px;line-height:32px;border-bottom:1px solid transparent;}
.foot-links a:hover{color:var(--t1);border-bottom-color:var(--t1);transform:translateY(-1px);}
.foot-bottom{
  margin-top:52px;padding:22px 0;border-top:1px solid var(--line);
  display:flex;flex-wrap:wrap;gap:10px 16px;align-items:center;justify-content:center;
  font-size:13px;color:var(--t3);text-align:center;
}
.foot-bottom a{color:var(--t3);}
.foot-bottom a:hover{color:var(--t1);}

/* ---------- responsive ---------- */
@media (max-width:1023px){
  .nav-pill,.header-cta{display:none;}
  .nav-toggle{display:inline-flex;}
  .list-wrap{grid-template-columns:1fr;gap:28px;}
  .sticky-side{position:static;}
  .check-grid{grid-template-columns:1fr;}
  .cta-strip{grid-template-columns:1fr;padding:32px 24px;}
  .foot-grid{grid-template-columns:1fr 1fr;gap:28px;}
}
@media (max-width:640px){
  :root{--section-y:56px;}
  .header-inner{gap:12px;}
  .brand-name{font-size:16.5px;}
  .cat-hero{padding:20px 0 40px;}
  .cat-hero-lead{font-size:15.5px;}
  .anchor-bar{border-radius:16px;}
  .anchor-bar a{padding:0 12px;font-size:13px;}
  .item-card{padding:20px 18px;}
  .timeline{padding-left:24px;}
  .tl-item::before{left:-24px;}
  .foot-grid{grid-template-columns:1fr;}
  .foot-bottom{font-size:12.5px;}
  .crumbs{padding-top:88px;}
}
@media (prefers-reduced-motion:reduce){
  *{animation:none !important;transition:none !important;}
  .reveal{opacity:1;transform:none;}
  html{scroll-behavior:auto;}
}

/* roulang page: category2 */
:root{
  --bg-0:#050A14;
  --bg-1:#0A1224;
  --panel:rgba(255,255,255,.045);
  --panel-line:rgba(255,255,255,.09);
  --line-soft:rgba(255,255,255,.06);
  --brand:#4C6FFF;
  --accent:#2BE0B0;
  --accent-soft:rgba(43,224,176,.12);
  --warn:#FFB45C;
  --t1:#EAF0FF;
  --t2:#A8B6D4;
  --t3:#6C7B9C;
  --ok:#35D07F;
  --err:#FF6B7A;
  --radius-card:16px;
  --radius-panel:20px;
  --radius-input:10px;
  --radius-badge:6px;
  --shadow:0 18px 44px rgba(0,0,0,.45);
  --ease:cubic-bezier(.2,.7,.3,1);
  --sec-gap:88px;
  --font-body:"PingFang SC","HarmonyOS Sans SC","Microsoft YaHei",system-ui,-apple-system,"Segoe UI",sans-serif;
  --font-mono:ui-monospace,"JetBrains Mono","Roboto Mono",Menlo,Consolas,monospace;
  --header-h:72px;
}

*,*::before,*::after{box-sizing:border-box;}
html{-webkit-text-size-adjust:100%;scroll-behavior:smooth;}

body{
  margin:0;
  font-family:var(--font-body);
  font-size:16px;
  line-height:1.85;
  font-weight:400;
  color:var(--t2);
  background-color:var(--bg-0);
  background-image:
    radial-gradient(560px 560px at 86% 0%, rgba(43,224,176,.14), transparent 72%),
    repeating-linear-gradient(0deg, rgba(255,255,255,.028) 0 1px, transparent 1px 48px),
    repeating-linear-gradient(90deg, rgba(255,255,255,.028) 0 1px, transparent 1px 48px);
  background-repeat:no-repeat,repeat,repeat;
  background-position:top right,0 0,0 0;
  overflow-x:hidden;
}

h1,h2,h3,h4{margin:0;color:var(--t1);font-weight:700;letter-spacing:.01em;}
h1{font-size:clamp(28px,3.9vw,46px);line-height:1.2;}
h2{font-size:clamp(24px,2.9vw,36px);line-height:1.3;}
h3{font-size:20px;line-height:1.45;font-weight:600;}
h4{font-size:17px;line-height:1.5;font-weight:600;}
p{margin:0 0 18px;}
p:last-child{margin-bottom:0;}
img{max-width:100%;display:block;height:auto;}
a{color:var(--t2);text-decoration:none;transition:color .18s var(--ease),border-color .18s var(--ease);}
a:hover{color:var(--t1);}
ul,ol{margin:0;padding:0;list-style:none;}
button{font-family:inherit;}
figure{margin:0;}

/* --- 覆盖 Foundation 默认外观 --- */
.grid-container{max-width:1240px;margin:0 auto;padding-left:24px;padding-right:24px;width:100%;}
@media (min-width:1024px){.grid-container{padding-left:40px;padding-right:40px;}}
@media (min-width:1536px){.grid-container{max-width:1280px;}}
@media (max-width:639px){.grid-container{padding-left:18px;padding-right:18px;}}

.grid-x{margin-left:auto;margin-right:auto;}
.grid-margin-x{margin-left:-12px;margin-right:-12px;}
.grid-margin-x>.cell{padding-left:12px;padding-right:12px;}

.button,.button.primary,.button.secondary{background:transparent;border:0;border-radius:0;color:inherit;font-family:inherit;margin:0;}
[type=text],[type=email],[type=tel],select,textarea{border-radius:var(--radius-input);box-shadow:none;margin:0;}
::selection{background:rgba(43,224,176,.28);color:var(--t1);}

::-webkit-scrollbar{width:10px;height:10px;}
::-webkit-scrollbar-track{background:var(--bg-0);}
::-webkit-scrollbar-thumb{background:rgba(255,255,255,.14);border-radius:999px;}
::-webkit-scrollbar-thumb:hover{background:rgba(255,255,255,.22);}

/* --- 顶部导航（全站唯一一套） --- */
.site-header{
  position:fixed;top:0;left:0;right:0;z-index:60;
  display:flex;align-items:center;
  height:var(--header-h);
  background:transparent;
  border-bottom:1px solid transparent;
  transition:height .2s var(--ease),background-color .2s var(--ease),border-color .2s var(--ease),backdrop-filter .2s var(--ease);
}
.site-header.is-scrolled{
  height:60px;
  background:rgba(5,10,20,.82);
  -webkit-backdrop-filter:blur(14px);
  backdrop-filter:blur(14px);
  border-bottom-color:rgba(255,255,255,.07);
}
.header-inner{display:flex;align-items:center;justify-content:space-between;gap:20px;}
.brand{display:inline-flex;align-items:center;gap:10px;color:var(--t1);font-size:18px;font-weight:700;letter-spacing:.01em;flex:none;}
.brand:hover{color:var(--t1);}
.brand-mark{width:20px;height:20px;color:var(--accent);flex:none;}

.nav-pill{
  display:none;align-items:center;gap:2px;padding:4px;
  border-radius:999px;background:rgba(255,255,255,.04);border:1px solid var(--panel-line);
}
@media (min-width:1024px){.nav-pill{display:inline-flex;}}
.nav-link{
  position:relative;display:inline-flex;align-items:center;height:38px;padding:0 16px;
  border-radius:999px;font-size:14.5px;color:var(--t2);white-space:nowrap;
  border:1px solid transparent;
  transition:color .18s var(--ease),background-color .18s var(--ease),border-color .18s var(--ease);
}
.nav-link:hover{color:var(--t1);background:rgba(255,255,255,.05);}
.nav-link.is-active{color:var(--t1);background:rgba(76,111,255,.22);border-color:rgba(76,111,255,.55);}

.header-actions{display:flex;align-items:center;gap:12px;flex:none;}
.btn-glow{
  display:none;align-items:center;height:40px;padding:0 20px;border-radius:999px;
  border:1px solid var(--accent);color:var(--accent);font-size:14px;font-weight:600;background:transparent;
  transition:background-color .18s var(--ease),box-shadow .18s var(--ease),color .18s var(--ease),transform .18s var(--ease);
}
@media (min-width:1024px){.btn-glow{display:inline-flex;}}
.btn-glow:hover{background:rgba(43,224,176,.10);box-shadow:0 0 24px rgba(43,224,176,.35);color:var(--accent);}
.btn-glow:focus-visible{outline:2px solid var(--accent);outline-offset:2px;}

.nav-toggle{
  display:inline-flex;align-items:center;justify-content:center;
  width:44px;height:44px;border-radius:12px;
  background:var(--panel);border:1px solid var(--panel-line);color:var(--t1);cursor:pointer;
  transition:border-color .18s var(--ease),background-color .18s var(--ease);
}
.nav-toggle:hover{border-color:rgba(43,224,176,.5);}
.nav-toggle:focus-visible{outline:2px solid var(--accent);outline-offset:2px;}
@media (min-width:1024px){.nav-toggle{display:none;}}
.nav-toggle span{display:block;width:18px;height:2px;background:currentColor;border-radius:2px;position:relative;}
.nav-toggle span::before,.nav-toggle span::after{content:"";position:absolute;left:0;width:18px;height:2px;background:currentColor;border-radius:2px;}
.nav-toggle span::before{top:-6px;}
.nav-toggle span::after{top:6px;}

.drawer-mask{
  position:fixed;inset:0;z-index:70;background:rgba(0,0,0,.62);
  opacity:0;visibility:hidden;transition:opacity .22s var(--ease),visibility .22s var(--ease);
}
.drawer-mask.is-open{opacity:1;visibility:visible;}

.drawer{
  position:fixed;top:0;right:0;bottom:0;z-index:80;width:84vw;max-width:360px;
  padding:20px 18px 28px;display:flex;flex-direction:column;gap:4px;overflow-y:auto;
  background:rgba(10,18,36,.94);
  -webkit-backdrop-filter:blur(12px) saturate(120%);
  backdrop-filter:blur(12px) saturate(120%);
  border-left:1px solid var(--panel-line);
  transform:translateX(102%);
  transition:transform .22s var(--ease);
}
.drawer.is-open{transform:translateX(0);}
.drawer-top{display:flex;align-items:center;justify-content:space-between;margin-bottom:12px;}
.drawer-title{font-size:15px;font-weight:700;color:var(--t1);}
.drawer-close{
  width:44px;height:44px;display:inline-flex;align-items:center;justify-content:center;
  border-radius:12px;background:var(--panel);border:1px solid var(--panel-line);color:var(--t1);
  font-size:22px;line-height:1;cursor:pointer;
}
.drawer-close:hover{border-color:rgba(43,224,176,.5);}
.drawer-link{
  display:flex;align-items:center;height:48px;padding:0 14px;
  border-left:2px solid transparent;color:var(--t2);font-size:15px;border-radius:0 10px 10px 0;
  transition:color .18s var(--ease),background-color .18s var(--ease),border-color .18s var(--ease);
}
.drawer-link:hover{color:var(--t1);background:rgba(255,255,255,.04);}
.drawer-link.is-active{color:var(--t1);border-left-color:var(--accent);background:rgba(255,255,255,.05);}
.drawer-sep{height:1px;background:var(--panel-line);margin:14px 0;}
.drawer-info{font-size:13.5px;color:var(--t3);line-height:1.9;}
.drawer-info strong{color:var(--t2);font-weight:600;margin-right:6px;}
.drawer-cta{
  margin-top:16px;display:flex;align-items:center;justify-content:center;
  height:46px;border-radius:999px;border:1px solid var(--accent);color:var(--accent);
  font-size:15px;font-weight:600;background:rgba(43,224,176,.06);
}

/* --- 通用按钮 --- */
.btn{
  display:inline-flex;align-items:center;justify-content:center;gap:8px;
  min-height:46px;padding:0 26px;border-radius:999px;
  font-size:15px;font-weight:600;border:1px solid transparent;cursor:pointer;
  transition:background-color .18s var(--ease),border-color .18s var(--ease),box-shadow .18s var(--ease),transform .18s var(--ease),color .18s var(--ease);
}
.btn:active{transform:scale(.98);}
.btn:focus-visible{outline:2px solid var(--accent);outline-offset:2px;}
.btn-primary{background:var(--accent);color:#04140F;box-shadow:0 0 22px rgba(43,224,176,.28);}
.btn-primary:hover{background:#4ff0c4;color:#04140F;box-shadow:0 0 30px rgba(43,224,176,.45);}
.btn-outline{border-color:rgba(255,255,255,.18);color:var(--t1);background:transparent;}
.btn-outline:hover{border-color:var(--accent);color:var(--accent);}
.btn-block{width:100%;}

/* --- 面包屑 --- */
.crumb{display:flex;align-items:center;gap:8px;font-size:13px;color:var(--t3);margin-bottom:20px;flex-wrap:wrap;}
.crumb a{color:var(--t3);}
.crumb a:hover{color:var(--t1);}
.crumb-sep{color:rgba(255,255,255,.18);}
.crumb [aria-current]{color:var(--t1);}

/* --- Hero --- */
.cat-hero{padding:116px 0 56px;border-bottom:1px solid var(--line-soft);}
@media (min-width:1024px){.cat-hero{padding:148px 0 76px;}}
.hero-grid{align-items:center;}
.hero-copy{max-width:640px;}
.hero-sub{font-size:17px;color:var(--t2);margin:20px 0 28px;max-width:560px;}
.hero-actions{display:flex;flex-wrap:wrap;gap:14px;margin-bottom:20px;}
.hero-note{font-size:13.5px;color:var(--t3);letter-spacing:.02em;margin:0;}
.hero-visual{margin-top:34px;}
@media (min-width:1024px){.hero-visual{margin-top:0;}}
.hero-figure{
  position:relative;height:220px;border-radius:var(--radius-panel);overflow:hidden;
  border:1px solid var(--panel-line);background:var(--bg-1);box-shadow:var(--shadow);
}
@media (min-width:640px){.hero-figure{height:280px;}}
@media (min-width:1024px){.hero-figure{height:320px;}}
.hero-figure img{width:100%;height:100%;object-fit:cover;}
.hero-figure::after{content:"";position:absolute;inset:0;background:rgba(5,10,20,.42);pointer-events:none;}
.hero-figure figcaption{
  position:absolute;left:18px;bottom:16px;right:18px;z-index:2;
  font-size:12.5px;letter-spacing:.06em;color:rgba(234,240,255,.82);
}

/* --- 板块通用 --- */
.section{padding:var(--sec-gap) 0;border-top:1px solid var(--line-soft);}
.section--alt{background:var(--bg-1);}
@media (max-width:639px){.section{padding:56px 0;}}
.sec-head{margin-bottom:44px;max-width:680px;}
.sec-head h2{display:flex;align-items:center;gap:12px;}
.sec-head h2::before{content:"";width:2px;height:18px;border-radius:2px;background:var(--accent);flex:none;}
.sec-idx{
  font-family:var(--font-mono);font-size:13px;font-weight:600;letter-spacing:.1em;
  color:var(--accent);padding-right:2px;
}
.sec-head p{margin-top:14px;font-size:15.5px;color:var(--t3);max-width:600px;}

/* --- 图文交替 --- */
.alt-row{
  display:grid;gap:26px;align-items:center;padding:34px 0;
  border-bottom:1px solid var(--line-soft);
}
.alt-row:last-child{border-bottom:0;padding-bottom:6px;}
@media (min-width:1024px){
  .alt-row{grid-template-columns:1fr 1fr;gap:52px;padding:40px 0;}
  .alt-row.is-rev .alt-media{order:2;}
}
.alt-media{
  height:220px;border-radius:var(--radius-card);overflow:hidden;
  border:1px solid var(--panel-line);background:var(--bg-1);box-shadow:var(--shadow);
}
@media (min-width:640px){.alt-media{height:280px;}}
.alt-media img{width:100%;height:100%;object-fit:cover;transition:transform .22s var(--ease);}
.alt-row:hover .alt-media img{transform:scale(1.03);}
.alt-body h3{margin-bottom:12px;display:flex;align-items:baseline;gap:12px;}
.alt-body h3 .alt-idx{
  font-family:var(--font-mono);font-size:13px;font-weight:600;color:var(--accent);letter-spacing:.1em;
}
.alt-body p{font-size:15.5px;color:var(--t2);}
.alt-list{margin-top:18px;border-top:1px solid var(--line-soft);padding-top:16px;display:grid;gap:10px;}
.alt-list li{position:relative;padding-left:18px;font-size:14.5px;color:var(--t3);}
.alt-list li::before{
  content:"";position:absolute;left:0;top:11px;width:6px;height:6px;border-radius:50%;
  background:var(--accent);box-shadow:0 0 10px rgba(43,224,176,.5);
}

/* --- 数据条 --- */
.barlist{display:grid;gap:30px;max-width:900px;}
.bar-top{display:flex;align-items:baseline;justify-content:space-between;gap:16px;margin-bottom:12px;}
.bar-name{font-size:15px;color:var(--t2);}
.bar-val{display:inline-flex;align-items:baseline;gap:6px;}
.bar-num{font-family:var(--font-mono);font-weight:700;font-size:clamp(22px,2.6vw,30px);color:var(--accent);line-height:1;}
.bar-unit{font-size:13.5px;color:var(--t3);}
.bar-track{height:6px;border-radius:999px;background:rgba(255,255,255,.08);overflow:hidden;}
.bar-fill{
  display:block;height:100%;width:0;border-radius:999px;background:var(--accent);
  box-shadow:0 0 14px rgba(43,224,176,.45);
  transition:width 1.1s var(--ease);
}

/* --- FAQ --- */
.faq-wrap{max-width:860px;}
.faq-item{
  background:rgba(255,255,255,.03);border:1px solid rgba(255,255,255,.08);
  border-radius:12px;margin-bottom:12px;overflow:hidden;
  transition:border-color .18s var(--ease),background-color .18s var(--ease);
}
.faq-item:hover{border-color:rgba(43,224,176,.28);}
.faq-q{
  width:100%;display:flex;align-items:center;justify-content:space-between;gap:18px;
  padding:18px 20px;background:transparent;border:0;cursor:pointer;text-align:left;
  font-size:16px;font-weight:600;color:var(--t1);line-height:1.6;
}
.faq-q:focus-visible{outline:2px solid var(--accent);outline-offset:-2px;}
.faq-icon{
  flex:none;width:20px;height:20px;position:relative;color:var(--accent);
  transition:transform .22s var(--ease);
}
.faq-icon::before,.faq-icon::after{
  content:"";position:absolute;background:currentColor;border-radius:2px;
}
.faq-icon::before{left:9px;top:0;width:2px;height:20px;}
.faq-icon::after{left:0;top:9px;width:20px;height:2px;}
.faq-item.is-open .faq-icon{transform:rotate(45deg);}
.faq-a{max-height:0;overflow:hidden;transition:max-height .22s var(--ease);}
.faq-a-inner{padding:0 20px 20px;font-size:15px;color:var(--t2);line-height:1.85;}

/* --- CTA / 表单 --- */
.cta-panel{
  border-radius:var(--radius-panel);border:1px solid var(--panel-line);
  background:var(--panel);
  -webkit-backdrop-filter:blur(12px) saturate(120%);
  backdrop-filter:blur(12px) saturate(120%);
  box-shadow:inset 0 1px 0 rgba(255,255,255,.07),var(--shadow);
  padding:28px 22px;
}
@media (min-width:1024px){.cta-panel{padding:44px 40px;}}
.cta-grid{display:grid;gap:32px;}
@media (min-width:1024px){
  .cta-grid{grid-template-columns:7fr 5fr;gap:48px;}
  .cta-side{border-left:1px solid var(--panel-line);padding-left:40px;}
}
.field{margin-bottom:18px;}
.field label{display:block;font-size:14px;color:var(--t2);margin-bottom:8px;font-weight:500;}
.field .req{color:var(--accent);margin-left:4px;}
.field input,.field select,.field textarea{
  width:100%;height:48px;padding:0 14px;font-size:15px;color:var(--t1);
  background:rgba(255,255,255,.04);border:1px solid var(--panel-line);
  border-radius:var(--radius-input);font-family:inherit;
  transition:border-color .18s var(--ease),box-shadow .18s var(--ease),background-color .18s var(--ease);
}
.field select{appearance:none;-webkit-appearance:none;background-image:linear-gradient(45deg,transparent 50%,var(--t3) 50%),linear-gradient(135deg,var(--t3) 50%,transparent 50%);background-position:calc(100% - 20px) 21px,calc(100% - 14px) 21px;background-size:6px 6px,6px 6px;background-repeat:no-repeat;}
.field select option{background:var(--bg-1);color:var(--t1);}
.field textarea{height:auto;min-height:112px;padding:12px 14px;line-height:1.7;resize:vertical;}
.field input::placeholder,.field textarea::placeholder{color:var(--t3);}
.field input:focus,.field select:focus,.field textarea:focus{
  outline:none;border-color:var(--brand);background:rgba(255,255,255,.06);
  box-shadow:0 0 0 3px rgba(76,111,255,.22);
}
.field.has-error input,.field.has-error select,.field.has-error textarea{border-color:var(--err);}
.field .err-msg{display:none;font-size:12.5px;color:var(--err);margin-top:6px;}
.field.has-error .err-msg{display:block;}
.form-note{font-size:12.5px;color:var(--t3);margin-top:14px;line-height:1.7;}
.form-ok{
  display:none;margin-top:16px;padding:12px 14px;border-radius:var(--radius-input);
  border:1px solid rgba(53,208,127,.4);background:rgba(53,208,127,.08);
  font-size:13.5px;color:var(--ok);
}
.form-ok.is-show{display:block;}

.cta-side .side-item{padding:16px 0;border-bottom:1px solid var(--line-soft);}
.cta-side .side-item:last-child{border-bottom:0;}
.side-k{display:block;font-size:12.5px;letter-spacing:.06em;color:var(--t3);margin-bottom:6px;}
.side-v{font-size:15px;color:var(--t1);}

/* --- 页脚 --- */
.site-footer{
  border-top:1px solid var(--panel-line);
  background:rgba(255,255,255,.02);
  padding:56px 0 26px;
}
.foot-grid{display:grid;gap:34px;}
@media (min-width:640px){.foot-grid{grid-template-columns:repeat(2,1fr);}}
@media (min-width:1024px){.foot-grid{grid-template-columns:1.5fr 1fr 1fr 1fr;gap:48px;}}
.foot-brand{display:inline-flex;align-items:center;gap:10px;color:var(--t1);font-size:17px;font-weight:700;margin-bottom:14px;}
.foot-brand:hover{color:var(--t1);}
.foot-desc{font-size:14px;color:var(--t3);max-width:320px;line-height:1.85;}
.foot-contact{margin-top:18px;display:grid;gap:8px;font-size:13.5px;color:var(--t3);}
.foot-contact strong{color:var(--t2);font-weight:600;margin-right:8px;}
.foot-title{font-size:14px;font-weight:600;color:var(--t1);margin-bottom:16px;letter-spacing:.04em;}
.foot-links{display:grid;gap:11px;}
.foot-links a{font-size:14px;color:var(--t3);}
.foot-links a:hover{color:var(--t1);text-decoration:underline;text-underline-offset:3px;}
.foot-bottom{
  margin-top:44px;padding-top:22px;border-top:1px solid var(--line-soft);
  display:flex;flex-wrap:wrap;align-items:center;justify-content:center;gap:10px;
  font-size:13px;color:var(--t3);text-align:center;
}
.foot-bottom a{color:var(--t3);}
.foot-bottom a:hover{color:var(--t1);text-decoration:underline;text-underline-offset:3px;}

/* --- 入场动效 --- */
.reveal{opacity:0;transform:translateY(12px);transition:opacity .5s var(--ease),transform .5s var(--ease);}
.reveal.is-in{opacity:1;transform:none;}

@media (prefers-reduced-motion:reduce){
  html{scroll-behavior:auto;}
  *,*::before,*::after{transition-duration:.01ms !important;animation-duration:.01ms !important;}
  .reveal{opacity:1;transform:none;}
}

/* roulang page: category3 */
:root{
  --bg-0:#050A14;
  --bg-1:#0A1224;
  --panel:rgba(255,255,255,.045);
  --panel-line:rgba(255,255,255,.09);
  --brand:#4C6FFF;
  --brand-strong:#5F82FF;
  --accent:#2BE0B0;
  --warn:#FFB45C;
  --t1:#EAF0FF;
  --t2:#A8B6D4;
  --t3:#6C7B9C;
  --ok:#35D07F;
  --err:#FF6B7A;

  --line-soft:rgba(255,255,255,.06);
  --line-mid:rgba(255,255,255,.08);
  --line-strong:rgba(255,255,255,.12);
  --field-bg:rgba(255,255,255,.04);
  --badge-bg:rgba(255,180,92,.14);

  --r-card:16px;
  --r-panel:20px;
  --r-btn:999px;
  --r-btn-sm:10px;
  --r-input:10px;
  --r-badge:6px;
  --r-faq:12px;

  --shadow:0 18px 44px rgba(0,0,0,.45);
  --glow-accent:0 0 24px rgba(43,224,176,.35);
  --glow-brand:0 0 0 3px rgba(76,111,255,.22);

  --sp-section:88px;
  --sp-section-sm:56px;
  --ease:cubic-bezier(.2,.7,.3,1);

  --font-sans:"PingFang SC","HarmonyOS Sans SC","Microsoft YaHei",system-ui,-apple-system,"Segoe UI",sans-serif;
  --font-mono:ui-monospace,"JetBrains Mono","Roboto Mono",Menlo,Consolas,monospace;
}

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

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

body{
  margin:0;
  font-family:var(--font-sans);
  font-size:16px;
  line-height:1.85;
  color:var(--t2);
  background-color:var(--bg-0);
  background-image:
    radial-gradient(closest-side, rgba(43,224,176,.14), transparent),
    repeating-linear-gradient(0deg, rgba(255,255,255,.028) 0 1px, transparent 1px 48px),
    repeating-linear-gradient(90deg, rgba(255,255,255,.028) 0 1px, transparent 1px 48px);
  background-repeat:no-repeat,repeat,repeat;
  background-position:top right,0 0,0 0;
  background-size:620px 620px,auto,auto;
  overflow-x:hidden;
}

body.is-locked{overflow:hidden;}

img{max-width:100%;display:block;height:auto;}

a{color:var(--accent);text-decoration:none;}

ul,ol{margin:0;padding:0;list-style:none;}

button{font-family:inherit;}

h1,h2,h3,h4{margin:0;color:var(--t1);font-weight:700;letter-spacing:.01em;}

h1{font-size:clamp(30px,4.4vw,54px);line-height:1.18;}
h2{font-size:clamp(24px,2.9vw,36px);line-height:1.3;}
h3{font-size:20px;font-weight:600;line-height:1.45;}
h4{font-size:17px;font-weight:600;line-height:1.5;}

p{margin:0 0 18px;}

p:last-child{margin-bottom:0;}

::selection{background:rgba(76,111,255,.35);color:#fff;}

::-webkit-scrollbar{width:10px;height:10px;}
::-webkit-scrollbar-track{background:var(--bg-0);}
::-webkit-scrollbar-thumb{background:rgba(255,255,255,.14);border-radius:999px;}
::-webkit-scrollbar-thumb:hover{background:rgba(255,255,255,.24);}

:focus-visible{outline:2px solid var(--accent);outline-offset:2px;}

.grid-container{
  width:100%;
  max-width:1240px;
  margin:0 auto;
  padding-left:24px;
  padding-right:24px;
}

.grid-x{display:flex;flex-wrap:wrap;margin-left:-12px;margin-right:-12px;}
.grid-x > [class*="cell"]{padding-left:12px;padding-right:12px;}
.cell{flex:0 0 auto;width:100%;}
.small-12{width:100%;}
@media (min-width:640px){
  .medium-6{width:50%;}
  .medium-12{width:100%;}
}
@media (min-width:1024px){
  .large-4{width:33.3333%;}
  .large-5{width:41.6667%;}
  .large-6{width:50%;}
  .large-7{width:58.3333%;}
  .large-8{width:66.6667%;}
}

@media (min-width:1024px){
  .grid-container{padding-left:40px;padding-right:40px;}
}
@media (min-width:1536px){
  .grid-container{max-width:1280px;}
}
@media (max-width:639px){
  .grid-container{padding-left:18px;padding-right:18px;}
}

/* ---------- 站点顶栏 ---------- */
.site-header{
  position:fixed;
  top:0;left:0;right:0;
  z-index:80;
  border-bottom:1px solid transparent;
  transition:background-color .2s var(--ease),border-color .2s var(--ease),backdrop-filter .2s var(--ease);
}
.site-header.is-scrolled{
  background:rgba(5,10,20,.82);
  -webkit-backdrop-filter:blur(14px);
  backdrop-filter:blur(14px);
  border-bottom-color:rgba(255,255,255,.07);
}
.nav-shell{
  height:72px;
  display:flex;
  align-items:center;
  justify-content:space-between;
  gap:18px;
  transition:height .2s var(--ease);
}
.site-header.is-scrolled .nav-shell{height:60px;}

.brand{
  display:inline-flex;
  align-items:center;
  gap:10px;
  color:var(--t1);
  font-size:18px;
  font-weight:700;
  letter-spacing:.01em;
  min-height:44px;
  text-decoration:none;
  white-space:nowrap;
}
.brand-mark{width:20px;height:20px;color:var(--accent);flex:0 0 auto;}

.nav-pill{
  display:flex;
  align-items:center;
  gap:2px;
  padding:4px;
  border-radius:999px;
  background:rgba(255,255,255,.04);
  border:1px solid var(--panel-line);
}
.nav-link{
  display:inline-flex;
  align-items:center;
  min-height:40px;
  padding:0 16px;
  border-radius:999px;
  font-size:14.5px;
  color:var(--t2);
  white-space:nowrap;
  transition:color .18s var(--ease),background-color .18s var(--ease),box-shadow .18s var(--ease);
}
.nav-link:hover{color:var(--t1);background-color:rgba(255,255,255,.05);}
.nav-link.is-active{
  color:var(--t1);
  background:rgba(76,111,255,.22);
  box-shadow:inset 0 0 0 1px rgba(76,111,255,.55);
}

.nav-cta{
  display:inline-flex;
  align-items:center;
  justify-content:center;
  min-height:44px;
  padding:0 20px;
  border-radius:var(--r-btn);
  border:1px solid rgba(43,224,176,.55);
  color:var(--accent);
  font-size:14.5px;
  font-weight:600;
  white-space:nowrap;
  transition:background-color .18s var(--ease),box-shadow .18s var(--ease),transform .18s var(--ease);
}
.nav-cta:hover{background-color:rgba(43,224,176,.1);box-shadow:var(--glow-accent);}
.nav-cta:active{transform:scale(.98);}

.nav-burger{
  display:none;
  width:44px;height:44px;
  align-items:center;justify-content:center;
  border-radius:12px;
  border:1px solid var(--panel-line);
  background:rgba(255,255,255,.04);
  color:var(--t1);
  cursor:pointer;
  transition:border-color .18s var(--ease),background-color .18s var(--ease);
}
.nav-burger:hover{border-color:rgba(43,224,176,.5);}
.nav-burger span{
  display:block;
  width:18px;height:2px;
  background:currentColor;
  border-radius:2px;
  position:relative;
}
.nav-burger span::before,
.nav-burger span::after{
  content:"";position:absolute;left:0;width:18px;height:2px;background:currentColor;border-radius:2px;
}
.nav-burger span::before{top:-6px;}
.nav-burger span::after{top:6px;}

.drawer-mask{
  position:fixed;inset:0;
  background:rgba(0,0,0,.62);
  opacity:0;visibility:hidden;
  transition:opacity .2s var(--ease),visibility .2s var(--ease);
  z-index:90;
}
.drawer-mask.is-open{opacity:1;visibility:visible;}

.nav-drawer{
  position:fixed;
  top:0;right:0;bottom:0;
  width:84vw;
  max-width:360px;
  z-index:100;
  transform:translateX(100%);
  transition:transform .24s var(--ease);
  background:rgba(10,18,36,.96);
  -webkit-backdrop-filter:blur(14px) saturate(120%);
  backdrop-filter:blur(14px) saturate(120%);
  border-left:1px solid var(--panel-line);
  padding:20px;
  display:flex;
  flex-direction:column;
  gap:8px;
  overflow-y:auto;
}
.nav-drawer.is-open{transform:translateX(0);}
.drawer-head{display:flex;align-items:center;justify-content:space-between;margin-bottom:10px;}
.drawer-title{font-size:16px;font-weight:700;color:var(--t1);}
.drawer-close{
  width:44px;height:44px;display:flex;align-items:center;justify-content:center;
  border-radius:12px;border:1px solid var(--panel-line);background:transparent;color:var(--t1);cursor:pointer;
  transition:border-color .18s var(--ease),background-color .18s var(--ease);
}
.drawer-close:hover{border-color:rgba(43,224,176,.5);background:rgba(255,255,255,.05);}
.drawer-link{
  display:flex;align-items:center;
  min-height:48px;
  padding:0 12px 0 14px;
  border-radius:10px;
  font-size:15px;
  color:var(--t2);
  border-left:2px solid transparent;
  transition:color .18s var(--ease),background-color .18s var(--ease),border-color .18s var(--ease);
}
.drawer-link:hover{color:var(--t1);background:rgba(255,255,255,.05);}
.drawer-link.is-active{color:var(--t1);border-left-color:var(--accent);background:rgba(76,111,255,.16);}
.drawer-divider{height:1px;background:var(--line-soft);margin:10px 0;}
.drawer-meta{font-size:13px;color:var(--t3);line-height:2;}
.drawer-cta{
  margin-top:12px;
  display:flex;align-items:center;justify-content:center;
  min-height:48px;border-radius:var(--r-btn);
  background:var(--accent);color:#04170F;font-weight:700;font-size:15px;
  box-shadow:var(--glow-accent);
}

@media (max-width:1023px){
  .nav-pill,.nav-cta{display:none;}
  .nav-burger{display:inline-flex;}
}

/* ---------- 通用按钮 ---------- */
.btn{
  display:inline-flex;
  align-items:center;
  justify-content:center;
  gap:8px;
  min-height:44px;
  padding:0 26px;
  border-radius:var(--r-btn);
  border:1px solid transparent;
  font-size:15px;
  font-weight:600;
  cursor:pointer;
  text-decoration:none;
  transition:background-color .18s var(--ease),border-color .18s var(--ease),color .18s var(--ease),box-shadow .18s var(--ease),transform .18s var(--ease);
}
.btn:active{transform:scale(.98);}
.btn--primary{
  background:var(--brand);
  color:#FFFFFF;
  box-shadow:0 12px 30px rgba(76,111,255,.28);
}
.btn--primary:hover{background:var(--brand-strong);box-shadow:0 14px 34px rgba(76,111,255,.36);}
.btn--ghost{
  background:transparent;
  border-color:var(--panel-line);
  color:var(--t1);
}
.btn--ghost:hover{border-color:rgba(43,224,176,.55);color:var(--accent);}
.btn--accent{
  background:var(--accent);
  color:#04170F;
  box-shadow:var(--glow-accent);
}
.btn--accent:hover{background:#37EDBD;}

.text-link{
  display:inline-flex;
  align-items:center;
  gap:6px;
  color:var(--accent);
  font-size:14px;
  font-weight:500;
  transition:transform .18s var(--ease),color .18s var(--ease);
}
.text-link:hover{transform:translateX(4px);text-decoration:underline;text-underline-offset:4px;}

.badge{
  display:inline-flex;
  align-items:center;
  padding:3px 9px;
  border-radius:var(--r-badge);
  background:var(--badge-bg);
  color:var(--warn);
  font-size:12.5px;
  letter-spacing:.06em;
  line-height:1.6;
}

/* ---------- 页面英雄区 ---------- */
.page-hero{
  padding:132px 0 64px;
  text-align:center;
  border-bottom:1px solid var(--line-soft);
}
.crumbs{
  display:flex;
  align-items:center;
  justify-content:center;
  flex-wrap:wrap;
  gap:8px;
  font-size:13px;
  color:var(--t3);
  margin-bottom:26px;
}
.crumbs a{color:var(--t3);transition:color .18s var(--ease);}
.crumbs a:hover{color:var(--accent);}
.crumbs span[aria-hidden]{color:rgba(255,255,255,.2);}
.crumb-current{color:var(--t1);}

.page-hero__inner{max-width:720px;margin:0 auto;}
.page-hero__title{margin-bottom:18px;}
.page-hero__lead{
  font-size:17px;
  color:var(--t2);
  line-height:1.8;
  max-width:640px;
  margin:0 auto 30px;
}
.page-hero__actions{
  display:flex;
  flex-wrap:wrap;
  gap:14px;
  justify-content:center;
}
.page-hero__note{
  margin-top:22px;
  font-size:13px;
  color:var(--t3);
  letter-spacing:.02em;
}

/* ---------- 指标条 ---------- */
.metrics{
  margin-top:-38px;
  padding:0 0 8px;
}
.metrics-inner{
  display:grid;
  grid-template-columns:repeat(4,1fr);
  border-radius:var(--r-panel);
  background:var(--panel);
  -webkit-backdrop-filter:blur(12px) saturate(120%);
  backdrop-filter:blur(12px) saturate(120%);
  border:1px solid var(--panel-line);
  box-shadow:0 18px 44px rgba(0,0,0,.45),inset 0 1px 0 rgba(255,255,255,.07);
  overflow:hidden;
}
.metric{
  padding:26px 20px;
  text-align:center;
  position:relative;
}
.metric + .metric{border-left:1px solid var(--line-mid);}
.metric__num{
  font-family:var(--font-mono);
  font-size:clamp(28px,3.4vw,44px);
  font-weight:700;
  color:var(--accent);
  line-height:1.1;
  letter-spacing:-.02em;
}
.metric__unit{font-size:.5em;margin-left:2px;color:var(--t3);}
.metric__label{margin-top:8px;font-size:13px;color:var(--t3);}
.metric__tick{
  width:36px;height:1px;
  background:linear-gradient(90deg,transparent,rgba(255,255,255,.22),transparent);
  margin:12px auto 0;
}

@media (max-width:767px){
  .metrics{margin-top:-24px;}
  .metrics-inner{grid-template-columns:1fr 1fr;}
  .metric + .metric{border-left:none;}
  .metric:nth-child(odd){border-right:1px solid var(--line-mid);}
  .metric:nth-child(n+3){border-top:1px solid var(--line-mid);}
}

/* ---------- 板块 ---------- */
.section{padding:var(--sp-section) 0;border-bottom:1px solid var(--line-soft);}
.section--flush{border-bottom:none;}
.section-head{max-width:720px;margin-bottom:44px;}
.sec-bar{
  display:inline-block;
  width:2px;height:18px;
  background:var(--accent);
  border-radius:2px;
  margin-bottom:14px;
}
.section-head h2{margin-bottom:14px;}
.section-sub{font-size:15px;color:var(--t3);margin:0;}

@media (max-width:639px){
  .section{padding:var(--sp-section-sm) 0;}
  .section-head{margin-bottom:30px;}
}

/* ---------- 规格对照 ---------- */
.spec-layout{display:flex;gap:48px;align-items:flex-start;}
.spec-aside{flex:0 0 300px;position:sticky;top:96px;}
.spec-aside-card{
  border-radius:var(--r-card);
  background:var(--panel);
  -webkit-backdrop-filter:blur(12px) saturate(120%);
  backdrop-filter:blur(12px) saturate(120%);
  border:1px solid var(--panel-line);
  box-shadow:0 18px 44px rgba(0,0,0,.45),inset 0 1px 0 rgba(255,255,255,.07);
  padding:24px;
}
.spec-aside-card h3{font-size:17px;margin-bottom:12px;}
.spec-aside-card p{font-size:14px;color:var(--t2);line-height:1.8;margin-bottom:16px;}
.spec-aside-meta{
  display:flex;
  flex-direction:column;
  gap:10px;
  padding-top:16px;
  border-top:1px solid var(--line-soft);
  font-size:13px;
  color:var(--t3);
}
.spec-aside-meta strong{color:var(--t2);font-weight:600;margin-right:6px;}

.spec-rows{flex:1 1 auto;min-width:0;}
.spec-row{
  display:flex;
  align-items:baseline;
  justify-content:space-between;
  gap:24px;
  padding:18px 0;
  border-bottom:1px solid var(--line-soft);
  transition:background-color .18s var(--ease);
}
.spec-row:first-child{border-top:1px solid var(--line-soft);}
.spec-row:hover{background-color:rgba(255,255,255,.02);}
.spec-key{font-size:14px;color:var(--t3);letter-spacing:.02em;}
.spec-val{
  font-family:var(--font-mono);
  font-size:15px;
  color:var(--t1);
  text-align:right;
  letter-spacing:.01em;
}
.spec-val em{font-style:normal;color:var(--t2);font-family:var(--font-sans);font-size:14px;}

@media (max-width:1023px){
  .spec-layout{flex-direction:column;gap:28px;}
  .spec-aside{flex:1 1 auto;width:100%;position:static;}
}
@media (max-width:639px){
  .spec-row{flex-direction:column;align-items:flex-start;gap:6px;}
  .spec-val{text-align:left;}
}

/* ---------- 图集 ---------- */
.gallery{
  display:grid;
  grid-template-columns:repeat(3,1fr);
  gap:18px;
}
.g-item{
  position:relative;
  margin:0;
  border-radius:var(--r-card);
  overflow:hidden;
  border:1px solid var(--panel-line);
  background:var(--bg-1);
  transition:border-color .18s var(--ease),transform .18s var(--ease);
}
.g-item:hover{border-color:rgba(43,224,176,.32);}
.g-item img{
  width:100%;height:100%;
  object-fit:cover;
  transition:transform .22s var(--ease);
}
.g-item:hover img{transform:scale(1.02);}
.g-item figcaption{
  position:absolute;
  left:0;right:0;bottom:0;
  padding:34px 16px 14px;
  font-size:13.5px;
  color:var(--t1);
  background:linear-gradient(180deg,transparent,rgba(5,10,20,.88));
}
.g-item--wide{grid-column:span 2;}
.g-item--tall{height:340px;}
.g-item--mid{height:230px;}

@media (max-width:1023px){
  .gallery{grid-template-columns:repeat(2,1fr);}
  .g-item--tall{height:260px;}
  .g-item--mid{height:200px;}
}
@media (max-width:639px){
  .gallery{grid-template-columns:1fr;}
  .g-item--wide{grid-column:span 1;}
  .g-item--tall,.g-item--mid{height:200px;}
}

/* ---------- 说明卡片 ---------- */
.note-grid{
  display:grid;
  grid-template-columns:repeat(3,minmax(0,1fr));
  gap:20px;
}
.note-card{
  border-radius:var(--r-card);
  background:var(--panel);
  -webkit-backdrop-filter:blur(12px) saturate(120%);
  backdrop-filter:blur(12px) saturate(120%);
  border:1px solid var(--panel-line);
  box-shadow:inset 0 1px 0 rgba(255,255,255,.07);
  padding:26px 24px;
  transition:border-color .18s var(--ease),transform .18s var(--ease),box-shadow .18s var(--ease);
}
.note-card:hover{transform:translateY(-3px);border-color:rgba(43,224,176,.28);box-shadow:0 18px 44px rgba(0,0,0,.45);}
.note-num{
  font-family:var(--font-mono);
  font-size:13px;
  color:var(--accent);
  letter-spacing:.1em;
  margin-bottom:14px;
}
.note-card h3{font-size:17px;margin-bottom:10px;}
.note-card p{font-size:14.5px;color:var(--t2);line-height:1.8;margin:0;}

@media (max-width:1023px){
  .note-grid{grid-template-columns:1fr 1fr;}
}
@media (max-width:639px){
  .note-grid{grid-template-columns:1fr;}
}

/* ---------- FAQ ---------- */
.faq-list{max-width:860px;margin:0 auto;}
.faq-item{
  background:rgba(255,255,255,.03);
  border:1px solid rgba(255,255,255,.08);
  border-radius:var(--r-faq);
  margin-bottom:12px;
  overflow:hidden;
  transition:border-color .18s var(--ease);
}
.faq-item:hover{border-color:rgba(255,255,255,.16);}
.faq-item.is-open{border-color:rgba(43,224,176,.28);}
.faq-q{
  width:100%;
  display:flex;
  align-items:center;
  justify-content:space-between;
  gap:16px;
  padding:18px 20px;
  background:transparent;
  border:0;
  color:var(--t1);
  font-size:16px;
  font-weight:600;
  text-align:left;
  cursor:pointer;
  min-height:44px;
}
.faq-icon{
  position:relative;
  flex:0 0 auto;
  width:16px;height:16px;
  transition:transform .22s var(--ease);
}
.faq-icon::before,
.faq-icon::after{
  content:"";
  position:absolute;
  background:var(--accent);
  border-radius:2px;
}
.faq-icon::before{top:7px;left:0;width:16px;height:2px;}
.faq-icon::after{left:7px;top:0;width:2px;height:16px;}
.faq-item.is-open .faq-icon{transform:rotate(45deg);}
.faq-a{
  max-height:0;
  overflow:hidden;
  transition:max-height .22s var(--ease);
}
.faq-a-inner{
  padding:0 20px 20px;
  font-size:14.5px;
  color:var(--t2);
  line-height:1.85;
}

/* ---------- 转化表单 ---------- */
.cta-panel{
  max-width:900px;
  margin:0 auto;
  border-radius:var(--r-panel);
  background:var(--panel);
  -webkit-backdrop-filter:blur(12px) saturate(120%);
  backdrop-filter:blur(12px) saturate(120%);
  border:1px solid var(--panel-line);
  box-shadow:0 18px 44px rgba(0,0,0,.45),inset 0 1px 0 rgba(255,255,255,.07);
  padding:38px;
}
.cta-grid{display:flex;gap:38px;}
.cta-form-col{flex:1 1 58%;min-width:0;}
.cta-info-col{
  flex:1 1 42%;
  min-width:0;
  padding-left:38px;
  border-left:1px solid var(--line-mid);
}
.cta-info-col h3{font-size:17px;margin-bottom:18px;}
.info-item{
  padding:14px 0;
  border-bottom:1px solid var(--line-soft);
  font-size:14px;
  color:var(--t2);
}
.info-item:last-child{border-bottom:none;}
.info-item strong{display:block;color:var(--t1);font-size:14px;font-weight:600;margin-bottom:4px;}

.field{display:flex;flex-direction:column;gap:8px;margin-bottom:18px;}
.field label{font-size:14px;color:var(--t2);font-weight:500;}
.field input,
.field select,
.field textarea{
  width:100%;
  min-height:48px;
  padding:12px 14px;
  border-radius:var(--r-input);
  background:var(--field-bg);
  border:1px solid var(--line-strong);
  color:var(--t1);
  font-size:15px;
  font-family:inherit;
  line-height:1.5;
  transition:border-color .18s var(--ease),box-shadow .18s var(--ease),background-color .18s var(--ease);
}
.field textarea{min-height:112px;resize:vertical;}
.field select{appearance:none;-webkit-appearance:none;background-image:linear-gradient(45deg,transparent 50%,var(--t3) 50%),linear-gradient(135deg,var(--t3) 50%,transparent 50%);background-position:calc(100% - 20px) 21px,calc(100% - 15px) 21px;background-size:5px 5px,5px 5px;background-repeat:no-repeat;padding-right:42px;}
.field select option{background:var(--bg-1);color:var(--t1);}
.field input::placeholder,
.field textarea::placeholder{color:rgba(108,123,156,.75);}
.field input:focus,
.field select:focus,
.field textarea:focus{
  outline:none;
  border-color:var(--brand);
  box-shadow:var(--glow-brand);
  background:rgba(255,255,255,.06);
}
.field.has-error input,
.field.has-error select,
.field.has-error textarea{border-color:var(--err);}
.field-error{font-size:12.5px;color:var(--err);display:none;}
.field.has-error .field-error{display:block;}

.form-note{font-size:12.5px;color:var(--t3);margin:14px 0 0;line-height:1.7;}
.form-ok{
  display:none;
  margin-top:16px;
  padding:12px 14px;
  border-radius:var(--r-input);
  border:1px solid rgba(53,208,127,.4);
  background:rgba(53,208,127,.1);
  color:var(--ok);
  font-size:13.5px;
}
.form-ok.is-visible{display:block;}

@media (max-width:1023px){
  .cta-panel{padding:28px 22px;}
  .cta-grid{flex-direction:column;gap:28px;}
  .cta-info-col{padding-left:0;border-left:none;padding-top:24px;border-top:1px solid var(--line-mid);}
}

/* ---------- 页脚 ---------- */
.site-footer{
  background:rgba(255,255,255,.02);
  border-top:1px solid var(--line-soft);
  padding:64px 0 28px;
  margin-top:0;
}
.foot-grid{
  display:grid;
  grid-template-columns:1.5fr 1fr 1fr 1fr;
  gap:36px;
}
.foot-brand{
  display:inline-flex;
  align-items:center;
  gap:10px;
  color:var(--t1);
  font-size:17px;
  font-weight:700;
  margin-bottom:14px;
}
.foot-brand .brand-mark{color:var(--accent);}
.brand-name{white-space:nowrap;}
.foot-desc{font-size:14px;color:var(--t3);line-height:1.85;margin-bottom:18px;max-width:340px;}
.foot-contact{font-size:13.5px;color:var(--t3);line-height:2;}
.foot-contact strong{color:var(--t2);font-weight:600;margin-right:8px;}
.foot-title{font-size:14px;font-weight:600;color:var(--t1);margin-bottom:16px;letter-spacing:.02em;}
.foot-links li{margin-bottom:10px;}
.foot-links a{
  font-size:14px;
  color:var(--t3);
  transition:color .18s var(--ease);
}
.foot-links a:hover{color:var(--t1);text-decoration:underline;text-underline-offset:3px;}
.foot-bottom{
  margin-top:44px;
  padding-top:22px;
  border-top:1px solid var(--line-soft);
  display:flex;
  flex-wrap:wrap;
  align-items:center;
  justify-content:center;
  gap:10px;
  font-size:13px;
  color:var(--t3);
  text-align:center;
}
.foot-bottom a{color:var(--t3);transition:color .18s var(--ease);}
.foot-bottom a:hover{color:var(--accent);}

@media (max-width:1023px){
  .foot-grid{grid-template-columns:1fr 1fr;}
}
@media (max-width:639px){
  .foot-grid{grid-template-columns:1fr;gap:30px;}
  .site-footer{padding:48px 0 24px;}
}

/* ---------- 入场动效 ---------- */
.reveal{opacity:0;transform:translateY(12px);transition:opacity .5s var(--ease),transform .5s var(--ease);}
html:not(.js-on) .reveal{opacity:1;transform:none;}
.reveal.is-in{opacity:1;transform:none;}

@media (prefers-reduced-motion:reduce){
  *{animation-duration:.001ms !important;transition-duration:.001ms !important;}
  .reveal{opacity:1;transform:none;}
  html{scroll-behavior:auto;}
}