/* roulang page: index */
:root{
  --brand:#1657D6;
  --brand-deep:#0F46B0;
  --brand-soft:#EDF3FE;
  --accent:#12C6A6;
  --accent-2:#FF6A1F;
  --bg:#F6F8FC;
  --surface:#FFFFFF;
  --surface-soft:#EDF3FE;
  --dark:#0F1B2E;
  --line:#E3E9F2;
  --ink-1:#0E1A2E;
  --ink-2:#4A5A73;
  --ink-3:#8A97AC;
  --r-card:16px;
  --r-btn:12px;
  --sh-card:0 1px 2px rgba(14,26,46,.04), 0 8px 24px rgba(14,26,46,.06);
  --sh-hover:0 12px 32px rgba(14,26,46,.10);
}
*,*::before,*::after{box-sizing:border-box}
html{-webkit-text-size-adjust:100%;scroll-behavior:smooth}
body{
  margin:0;
  background:var(--bg);
  color:var(--ink-1);
  font-family:"PingFang SC","HarmonyOS Sans SC","Microsoft YaHei","Noto Sans SC",system-ui,-apple-system,sans-serif;
  font-size:16px;
  line-height:1.8;
  font-weight:400;
}
img{max-width:100%;display:block;border-radius:12px}
a{color:inherit;text-decoration:none}
button,input,textarea,select{font:inherit;color:inherit}
ul,ol{margin:0;padding:0;list-style:none}
h1,h2,h3,h4{margin:0;line-height:1.3;font-weight:700;letter-spacing:-.01em}
p{margin:0}
.wrap{width:100%;max-width:1200px;margin:0 auto;padding:0 20px}
.num{font-variant-numeric:tabular-nums}

/* ---------- header ---------- */
.site-header{position:sticky;top:0;z-index:60;padding:12px 0;background:rgba(246,248,252,.92);backdrop-filter:blur(8px)}
.nav-panel{
  background:var(--surface);
  border:1px solid var(--line);
  border-radius:20px;
  box-shadow:var(--sh-card);
  display:flex;align-items:center;gap:16px;
  padding:10px 14px;
}
.brand{display:flex;align-items:center;gap:10px;flex-shrink:0}
.brand-mark{
  width:38px;height:38px;border-radius:11px;
  background:linear-gradient(135deg,var(--brand),#3A7BEE);
  display:flex;align-items:center;justify-content:center;
  color:#fff;font-weight:700;font-size:17px;letter-spacing:-1px;
}
.brand-text{display:flex;flex-direction:column;line-height:1.15}
.brand-text b{font-size:16px;font-weight:700;letter-spacing:-.02em}
.brand-text span{font-size:11px;color:var(--ink-3);letter-spacing:.08em}
.nav-links{display:flex;align-items:center;gap:6px;margin-left:8px;flex-wrap:nowrap}
.nav-item{
  display:flex;align-items:center;gap:8px;
  padding:7px 12px;border-radius:12px;
  font-size:14px;color:var(--ink-2);
  border:1px solid transparent;
  transition:all .2s ease;white-space:nowrap;
}
.nav-item .dot{
  width:22px;height:22px;border-radius:8px;
  background:var(--brand-soft);color:var(--brand);
  display:flex;align-items:center;justify-content:center;font-size:12px;font-weight:600;
}
.nav-item:hover{background:var(--brand-soft);color:var(--brand);border-color:#D6E3FB}
.nav-item.active{background:var(--brand-soft);color:var(--brand);border-color:#CFDFFA;position:relative}
.nav-item.active::before{
  content:"";position:absolute;left:-1px;top:50%;transform:translateY(-50%);
  width:3px;height:20px;border-radius:3px;background:var(--brand);
}
.nav-cta{margin-left:auto;flex-shrink:0}
.btn{
  display:inline-flex;align-items:center;justify-content:center;gap:8px;
  height:46px;padding:0 20px;border-radius:var(--r-btn);
  font-size:15px;font-weight:600;cursor:pointer;border:1px solid transparent;
  transition:all .2s ease;
}
.btn-primary{background:var(--brand);color:#fff;box-shadow:0 6px 18px rgba(22,87,214,.24)}
.btn-primary:hover{background:var(--brand-deep);box-shadow:0 10px 24px rgba(22,87,214,.30)}
.btn-primary:active{transform:translateY(1px)}
.btn-ghost{background:#fff;color:var(--brand);border-color:var(--line)}
.btn-ghost:hover{background:var(--brand-soft);border-color:#CFDFFA}
.btn-dark{background:var(--dark);color:#fff}
.btn-dark:hover{background:#16294a}
.btn:focus-visible{outline:none;box-shadow:0 0 0 4px rgba(22,87,214,.18)}
.btn-sm{height:40px;padding:0 16px;font-size:14px}
.burger{margin-left:auto;display:none;width:44px;height:44px;border-radius:12px;border:1px solid var(--line);background:#fff;align-items:center;justify-content:center;cursor:pointer}
.burger span{display:block;width:18px;height:2px;background:var(--ink-1);position:relative}
.burger span::before,.burger span::after{content:"";position:absolute;left:0;width:18px;height:2px;background:var(--ink-1)}
.burger span::before{top:-6px}.burger span::after{top:6px}
.drawer{display:none;background:var(--surface);border:1px solid var(--line);border-radius:18px;box-shadow:var(--sh-card);padding:12px;margin-top:10px}
.drawer.open{display:block}
.drawer a{display:flex;align-items:center;gap:10px;padding:12px;border-radius:12px;font-size:15px;color:var(--ink-2)}
.drawer a.active,.drawer a:hover{background:var(--brand-soft);color:var(--brand)}
.drawer .d-cta{margin-top:6px}

/* ---------- anchor bar ---------- */
.anchor-bar{position:sticky;top:76px;z-index:40;padding:0 0 8px}
.anchor-inner{
  background:rgba(255,255,255,.94);
  border:1px solid var(--line);border-radius:14px;
  box-shadow:0 1px 2px rgba(14,26,46,.04);
  display:flex;gap:4px;padding:6px;overflow-x:auto;
}
.anchor-inner a{
  padding:8px 14px;border-radius:10px;font-size:14px;color:var(--ink-2);
  white-space:nowrap;transition:all .2s ease;
}
.anchor-inner a:hover{background:var(--brand-soft);color:var(--brand)}

/* ---------- hero ---------- */
.hero{padding:56px 0 72px}
.hero-grid{display:grid;grid-template-columns:1fr 1.12fr;gap:48px;align-items:center;min-height:520px}
.eyebrow{
  display:inline-flex;align-items:center;gap:8px;
  background:var(--brand-soft);color:var(--brand);
  padding:6px 14px;border-radius:999px;font-size:13px;font-weight:600;
}
.eyebrow i{width:6px;height:6px;border-radius:50%;background:var(--accent);display:inline-block}
h1.hero-title{font-size:44px;margin:20px 0 0;letter-spacing:-.02em}
h1.hero-title em{font-style:normal;color:var(--brand)}
.hero-sub{margin-top:18px;font-size:18px;color:var(--ink-2);max-width:560px}
.hero-actions{display:flex;gap:12px;margin-top:30px;flex-wrap:wrap}
.hero-stats{display:grid;grid-template-columns:repeat(4,minmax(0,1fr));gap:14px;margin-top:38px}
.hero-stat{background:#fff;border:1px solid var(--line);border-radius:var(--r-card);padding:14px 16px;box-shadow:var(--sh-card)}
.hero-stat b{display:block;font-size:22px;color:var(--brand);letter-spacing:-.02em}
.hero-stat span{font-size:12px;color:var(--ink-3)}
.hero-visual{position:relative}
.hero-visual .photo{
  width:100%;height:430px;object-fit:cover;border-radius:20px;
  border:1px solid var(--line);box-shadow:var(--sh-hover);
}
.hero-float{
  position:absolute;left:-16px;bottom:26px;
  background:#fff;border:1px solid var(--line);border-radius:var(--r-card);
  box-shadow:var(--sh-hover);padding:14px 18px;display:flex;align-items:center;gap:12px;
}
.hero-float .badge-ico{width:36px;height:36px;border-radius:10px;background:var(--brand-soft);display:flex;align-items:center;justify-content:center;color:var(--brand);font-weight:700}
.hero-float b{display:block;font-size:15px}
.hero-float span{font-size:12px;color:var(--ink-3)}

/* ---------- section ---------- */
.section{padding:80px 0}
.section.soft{background:var(--surface-soft);border-top:1px solid #DFE8FA;border-bottom:1px solid #DFE8FA}
.sec-head{max-width:760px}
.sec-eyebrow{font-size:13px;font-weight:700;letter-spacing:.1em;color:var(--accent);text-transform:uppercase}
.sec-title{font-size:30px;margin-top:10px}
.sec-desc{margin-top:14px;color:var(--ink-2);font-size:16px}
.sec-head-row{display:flex;align-items:flex-end;justify-content:space-between;gap:24px;flex-wrap:wrap}

/* ---------- cards ---------- */
.grid-3{display:grid;grid-template-columns:repeat(3,minmax(0,1fr));gap:24px;margin-top:44px}
.grid-2{display:grid;grid-template-columns:repeat(2,minmax(0,1fr));gap:24px;margin-top:44px}
.card{
  background:var(--surface);border:1px solid var(--line);border-radius:var(--r-card);
  padding:24px;box-shadow:var(--sh-card);transition:all .2s ease;
}
.card:hover{transform:translateY(-3px);box-shadow:var(--sh-hover);border-color:#D6E3FB}
.card-ico{
  width:44px;height:44px;border-radius:12px;background:var(--brand-soft);color:var(--brand);
  display:flex;align-items:center;justify-content:center;font-size:18px;font-weight:700;margin-bottom:16px;
}
.card h3{font-size:19px}
.card p{margin-top:10px;color:var(--ink-2);font-size:15px}
.card ul{margin-top:14px;display:flex;flex-direction:column;gap:8px}
.card li{position:relative;padding-left:18px;font-size:14px;color:var(--ink-2)}
.card li::before{content:"";position:absolute;left:0;top:10px;width:7px;height:7px;border-radius:50%;background:var(--accent)}

/* ---------- split ---------- */
.split{display:grid;grid-template-columns:1fr 1fr;gap:56px;align-items:center;margin-top:56px}
.split.rev .split-media{order:2}
.split-media img{width:100%;height:340px;object-fit:cover;border:1px solid var(--line);border-radius:var(--r-card);box-shadow:var(--sh-card)}
.split h3{font-size:24px}
.split p{margin-top:14px;color:var(--ink-2)}
.step-list{margin-top:22px;display:flex;flex-direction:column;gap:14px}
.step{display:flex;gap:14px;background:#fff;border:1px solid var(--line);border-radius:var(--r-card);padding:16px 18px}
.step .idx{width:30px;height:30px;flex-shrink:0;border-radius:9px;background:var(--brand);color:#fff;display:flex;align-items:center;justify-content:center;font-size:14px;font-weight:700}
.step b{font-size:15px}
.step p{margin-top:4px;font-size:14px;color:var(--ink-2)}

/* ---------- evidence ---------- */
.metric-row{display:grid;grid-template-columns:repeat(4,minmax(0,1fr));gap:20px;margin-top:44px}
.metric{background:#fff;border:1px solid var(--line);border-radius:var(--r-card);padding:22px;box-shadow:var(--sh-card)}
.metric b{font-size:30px;color:var(--ink-1);letter-spacing:-.03em}
.metric b i{font-style:normal;font-size:16px;color:var(--brand);margin-left:2px}
.metric span{display:block;margin-top:6px;font-size:13px;color:var(--ink-3)}
.bar{margin-top:16px;height:6px;border-radius:999px;background:var(--brand-soft);overflow:hidden}
.bar em{display:block;height:100%;border-radius:999px;background:linear-gradient(90deg,var(--brand),var(--accent))}
.quote-grid{display:grid;grid-template-columns:repeat(3,minmax(0,1fr));gap:24px;margin-top:36px}
.quote{background:#fff;border:1px solid var(--line);border-radius:var(--r-card);padding:24px;box-shadow:var(--sh-card)}
.quote p{font-size:15px;color:var(--ink-2)}
.quote footer{margin-top:16px;display:flex;align-items:center;gap:10px;font-size:13px;color:var(--ink-3)}
.avatar{width:34px;height:34px;border-radius:10px;background:var(--brand-soft);color:var(--brand);display:flex;align-items:center;justify-content:center;font-weight:700;font-size:14px}

/* ---------- pricing ---------- */
.price-grid{display:grid;grid-template-columns:repeat(3,minmax(0,1fr));gap:24px;margin-top:44px;align-items:start}
.price{background:#fff;border:1px solid var(--line);border-radius:var(--r-card);padding:28px;box-shadow:var(--sh-card);transition:all .2s ease;position:relative}
.price:hover{transform:translateY(-3px);box-shadow:var(--sh-hover)}
.price.hot{border-color:#C9DBFB;box-shadow:0 12px 32px rgba(22,87,214,.12)}
.tag-hot{position:absolute;top:-13px;right:22px;background:var(--accent-2);color:#fff;font-size:12px;font-weight:600;padding:5px 12px;border-radius:999px}
.price h3{font-size:20px}
.price .amount{margin-top:14px;font-size:34px;font-weight:700;letter-spacing:-.03em}
.price .amount small{font-size:14px;color:var(--ink-3);font-weight:400;margin-left:4px}
.price .note{margin-top:8px;font-size:13px;color:var(--ink-3)}
.price ul{margin:22px 0 0;display:flex;flex-direction:column;gap:10px}
.price li{font-size:14px;color:var(--ink-2);padding-left:20px;position:relative}
.price li::before{content:"✓";position:absolute;left:0;color:var(--accent);font-weight:700}
.price .btn{width:100%;margin-top:24px}
.chip-row{display:flex;gap:10px;flex-wrap:wrap;margin-top:24px}
.chip{background:#fff;border:1px solid var(--line);border-radius:999px;padding:7px 14px;font-size:13px;color:var(--ink-2)}
.chip.on{background:var(--brand-soft);border-color:#CFDFFA;color:var(--brand);font-weight:600}

/* ---------- faq ---------- */
.faq{margin-top:40px;display:grid;grid-template-columns:repeat(2,minmax(0,1fr));gap:18px}
.qa{background:#fff;border:1px solid var(--line);border-radius:var(--r-card);padding:0 22px;box-shadow:var(--sh-card);transition:border-color .2s ease}
.qa[open]{border-color:#C9DBFB}
.qa summary{
  list-style:none;cursor:pointer;padding:20px 0;font-size:16px;font-weight:600;
  display:flex;align-items:center;justify-content:space-between;gap:16px;
}
.qa summary::-webkit-details-marker{display:none}
.qa summary::after{
  content:"+";flex-shrink:0;width:26px;height:26px;border-radius:8px;
  background:var(--brand-soft);color:var(--brand);font-weight:600;font-size:16px;
  display:flex;align-items:center;justify-content:center;transition:transform .2s ease;
}
.qa[open] summary::after{content:"−";transform:rotate(180deg)}
.qa p{padding:0 0 20px;font-size:15px;color:var(--ink-2)}

/* ---------- news ---------- */
.news-grid{display:grid;grid-template-columns:repeat(3,minmax(0,1fr));gap:24px;margin-top:40px}
.news-card{
  background:#fff;border:1px solid var(--line);border-radius:var(--r-card);
  overflow:hidden;box-shadow:var(--sh-card);display:flex;flex-direction:column;transition:all .2s ease;
}
.news-card:hover{transform:translateY(-3px);box-shadow:var(--sh-hover)}
.news-card:hover h3{color:var(--brand)}
.news-thumb{width:100%;height:176px;object-fit:cover;border-radius:0}
.news-body{padding:20px;display:flex;flex-direction:column;gap:10px;flex:1}
.news-meta{display:flex;align-items:center;gap:10px;font-size:12px;color:var(--ink-3)}
.badge{background:var(--brand-soft);color:var(--brand);border-radius:999px;padding:4px 11px;font-size:12px;font-weight:600}
.news-card h3{font-size:17px;line-height:1.5;display:-webkit-box;-webkit-line-clamp:2;-webkit-box-orient:vertical;overflow:hidden}
.news-card p{font-size:14px;color:var(--ink-2);display:-webkit-box;-webkit-line-clamp:3;-webkit-box-orient:vertical;overflow:hidden}
.news-foot{margin-top:auto;padding-top:8px;font-size:12px;color:var(--ink-3)}
.empty-card{
  grid-column:1 / -1;background:#fff;border:1px dashed #CFDFFA;border-radius:var(--r-card);
  padding:52px 24px;text-align:center;box-shadow:var(--sh-card);
}
.empty-card b{display:block;font-size:17px;margin-top:14px}
.empty-card p{color:var(--ink-3);font-size:14px;margin-top:6px}

/* ---------- cta band ---------- */
.cta-band{background:var(--dark);color:#fff;border-radius:24px;padding:56px;display:grid;grid-template-columns:1.4fr 1fr;gap:40px;align-items:center}
.cta-band h2{font-size:30px}
.cta-band p{margin-top:14px;color:#B9C6DA;font-size:16px}
.cta-band .btn-ghost{background:transparent;color:#fff;border-color:rgba(255,255,255,.28)}
.cta-band .btn-ghost:hover{background:rgba(255,255,255,.08)}
.cta-actions{display:flex;gap:12px;flex-wrap:wrap;margin-top:26px}
.cta-fields{display:flex;flex-direction:column;gap:12px;background:rgba(255,255,255,.05);border:1px solid rgba(255,255,255,.12);border-radius:var(--r-card);padding:22px}
.cta-fields label{font-size:13px;color:#B9C6DA}
.cta-fields input,.cta-fields textarea{
  width:100%;background:rgba(255,255,255,.06);border:1px solid rgba(255,255,255,.16);
  border-radius:var(--r-btn);padding:12px 14px;color:#fff;font-size:14px;height:46px;
}
.cta-fields textarea{height:auto;min-height:84px;resize:vertical}
.cta-fields input:focus,.cta-fields textarea:focus{outline:none;border-color:var(--accent);box-shadow:0 0 0 4px rgba(18,198,166,.18)}

/* ---------- footer ---------- */
.site-footer{background:var(--dark);color:#fff;margin-top:80px;padding:64px 0 28px}
.foot-grid{display:grid;grid-template-columns:1.5fr 1fr 1fr 1.2fr;gap:40px}
.site-footer .brand-mark{background:linear-gradient(135deg,var(--brand),var(--accent))}
.foot-about{margin-top:16px;color:#9FB0C8;font-size:14px;max-width:320px}
.foot-col h4{font-size:14px;letter-spacing:.06em;color:#fff;margin-bottom:16px}
.foot-col a,.foot-col span{display:block;color:#9FB0C8;font-size:14px;padding:5px 0;transition:color .2s ease}
.foot-col a:hover{color:var(--accent)}
.foot-bottom{margin-top:44px;padding-top:22px;border-top:1px solid rgba(255,255,255,.1);display:flex;justify-content:space-between;gap:16px;flex-wrap:wrap;font-size:13px;color:#8A9AB3}

/* ---------- float cta ---------- */
.float-cta{
  position:fixed;right:24px;bottom:24px;z-index:70;
  display:none;align-items:center;gap:10px;
  background:var(--brand);color:#fff;font-weight:600;font-size:15px;
  padding:14px 22px;border-radius:999px;box-shadow:0 14px 34px rgba(22,87,214,.34);
}
.float-cta.show{display:inline-flex}
.float-cta .pulse{width:8px;height:8px;border-radius:50%;background:var(--accent-2);box-shadow:0 0 0 4px rgba(255,106,31,.22)}
.float-cta:hover{background:var(--brand-deep)}

@media (max-width:1024px){
  .nav-links{display:none}
  .nav-cta{display:none}
  .burger{display:flex}
  .hero-grid{grid-template-columns:1fr;gap:36px;min-height:0}
  .hero-stats{grid-template-columns:repeat(2,minmax(0,1fr))}
  .grid-3,.quote-grid,.price-grid,.news-grid,.faq{grid-template-columns:repeat(2,minmax(0,1fr))}
  .metric-row{grid-template-columns:repeat(2,minmax(0,1fr))}
  .split{grid-template-columns:1fr;gap:32px}
  .split.rev .split-media{order:0}
  .cta-band{grid-template-columns:1fr;padding:40px}
  .foot-grid{grid-template-columns:repeat(2,minmax(0,1fr))}
  h1.hero-title{font-size:34px}
  .anchor-bar{top:72px}
}
@media (max-width:767px){
  .section{padding:48px 0}
  .hero{padding:32px 0 48px}
  h1.hero-title{font-size:29px}
  .hero-sub{font-size:16px}
  .sec-title{font-size:23px}
  .grid-3,.grid-2,.quote-grid,.price-grid,.news-grid,.faq,.metric-row{grid-template-columns:1fr}
  .hero-visual .photo{height:260px}
  .hero-float{left:8px;bottom:12px;padding:10px 14px}
  .cta-band{padding:30px 22px;border-radius:18px}
  .cta-band h2{font-size:23px}
  .foot-grid{grid-template-columns:1fr;gap:28px}
  .float-cta{left:16px;right:16px;bottom:16px;justify-content:center;border-radius:14px;padding:14px 18px}
  .site-header{padding:8px 0}
  .anchor-bar{top:66px}
}
@media (max-width:400px){
  .hero-stats{grid-template-columns:1fr}
}

/* roulang page: article */
:root{
  --brand:#1657D6;
  --brand-deep:#0F46B0;
  --brand-soft:#EDF3FE;
  --accent:#12C6A6;
  --accent-deep:#0B8873;
  --accent-2:#FF6A1F;
  --bg:#F6F8FC;
  --surface:#FFFFFF;
  --surface-soft:#EDF3FE;
  --panel:#0F1B2E;
  --line:#E3E9F2;
  --ink-1:#0E1A2E;
  --ink-2:#4A5A73;
  --ink-3:#8A97AC;
  --r-card:16px;
  --r-btn:12px;
  --sh-card:0 1px 2px rgba(14,26,46,.04),0 8px 24px rgba(14,26,46,.06);
  --sh-hover:0 12px 32px rgba(14,26,46,.10);
  --ease:200ms ease;
}
*,*::before,*::after{box-sizing:border-box}
html{-webkit-text-size-adjust:100%}
body.page-article{
  margin:0;
  font-family:"PingFang SC","HarmonyOS Sans SC","Microsoft YaHei","Noto Sans SC",system-ui,-apple-system,"Segoe UI",sans-serif;
  background:var(--bg);
  color:var(--ink-1);
  font-size:16px;
  line-height:1.8;
  overflow-x:hidden;
}
img{max-width:100%;height:auto;display:block}
a{color:inherit;text-decoration:none}
button,input,textarea,select{font-family:inherit;font-size:inherit}
.container{width:100%;max-width:1200px;margin:0 auto;padding:0 20px}

/* ---------- 顶部导航 ---------- */
.site-head{
  position:sticky;top:0;z-index:80;
  background:var(--bg);
  padding:14px 0;
  border-bottom:1px solid rgba(227,233,242,.9);
}
.nav-panel{
  display:flex;align-items:center;gap:16px;
  background:var(--surface);
  border:1px solid var(--line);
  border-radius:18px;
  padding:10px 14px;
  box-shadow:var(--sh-card);
}
.brand{display:flex;align-items:center;gap:10px;flex:0 0 auto}
.brand-mark{
  display:grid;place-items:center;
  width:38px;height:38px;border-radius:12px;
  background:var(--brand);color:#fff;
  font-size:17px;font-weight:700;letter-spacing:.5px;
}
.brand-text{display:flex;flex-direction:column;line-height:1.2}
.brand-text b{font-size:15px;font-weight:700;color:var(--ink-1);letter-spacing:.2px;white-space:nowrap}
.brand-text span{font-size:10px;letter-spacing:1.6px;color:var(--ink-3);margin-top:2px}
.nav-links{display:flex;align-items:center;gap:6px;margin-left:auto}
.nav-item{
  display:flex;align-items:center;gap:8px;
  padding:9px 14px;border-radius:12px;
  font-size:14px;color:var(--ink-2);
  border:1px solid transparent;
  transition:background var(--ease),color var(--ease),border-color var(--ease),box-shadow var(--ease);
  white-space:nowrap;
}
.nav-item .dot{
  display:grid;place-items:center;
  width:22px;height:22px;border-radius:8px;
  background:var(--surface-soft);color:var(--brand);
  font-size:12px;font-weight:600;
  transition:background var(--ease),color var(--ease);
}
.nav-item:hover{background:var(--brand-soft);color:var(--brand);border-color:rgba(22,87,214,.18)}
.nav-item:hover .dot{background:#fff}
.nav-item.active{
  background:var(--brand-soft);color:var(--brand-deep);
  border-color:rgba(22,87,214,.20);
  box-shadow:inset 2px 0 0 var(--brand);
}
.nav-item:focus-visible{outline:none;box-shadow:0 0 0 4px rgba(22,87,214,.22)}
.nav-cta{margin-left:6px}
.burger{
  display:none;
  width:44px;height:44px;border-radius:12px;
  border:1px solid var(--line);background:#fff;
  cursor:pointer;place-items:center;
  transition:background var(--ease),border-color var(--ease);
}
.burger:hover{background:var(--brand-soft);border-color:rgba(22,87,214,.24)}
.burger span{display:block;width:18px;height:2px;border-radius:2px;background:var(--ink-1);position:relative;transition:background var(--ease)}
.burger span::before,.burger span::after{
  content:"";position:absolute;left:0;width:18px;height:2px;border-radius:2px;
  background:var(--ink-1);transition:transform var(--ease),background var(--ease);
}
.burger span::before{top:-6px}
.burger span::after{top:6px}
.burger[aria-expanded="true"] span{background:transparent}
.burger[aria-expanded="true"] span::before{transform:translateY(6px) rotate(45deg);background:var(--brand)}
.burger[aria-expanded="true"] span::after{transform:translateY(-6px) rotate(-45deg);background:var(--brand)}

/* ---------- 按钮 ---------- */
.btn{
  display:inline-flex;align-items:center;justify-content:center;gap:8px;
  height:46px;padding:0 22px;border-radius:var(--r-btn);
  font-size:15px;font-weight:600;line-height:1;
  border:1px solid transparent;cursor:pointer;
  transition:background var(--ease),color var(--ease),border-color var(--ease),box-shadow var(--ease),transform var(--ease);
  white-space:nowrap;
}
.btn-primary{background:var(--brand);color:#fff;box-shadow:0 6px 18px rgba(22,87,214,.24)}
.btn-primary:hover{background:var(--brand-deep);box-shadow:0 8px 22px rgba(22,87,214,.30)}
.btn-primary:active{transform:translateY(1px)}
.btn-ghost{background:#fff;color:var(--brand);border-color:var(--line)}
.btn-ghost:hover{background:var(--brand-soft);border-color:rgba(22,87,214,.30)}
.btn-light{background:rgba(255,255,255,.10);color:#fff;border-color:rgba(255,255,255,.24)}
.btn-light:hover{background:rgba(255,255,255,.20)}
.btn-sm{height:40px;padding:0 16px;font-size:14px}
.btn:focus-visible{outline:none;box-shadow:0 0 0 4px rgba(22,87,214,.28)}

/* ---------- 页面头部 / 面包屑 ---------- */
.page-head{padding:34px 0 0}
.crumbs{
  display:flex;flex-wrap:wrap;align-items:center;gap:8px;
  font-size:13.5px;color:var(--ink-3);margin-bottom:20px;
}
.crumbs a{transition:color var(--ease)}
.crumbs a:hover{color:var(--brand)}
.crumb-sep{color:#C3CCDA}
.crumb-mid{color:var(--ink-2)}
.crumb-cur{color:var(--ink-3)}

/* ---------- 阅读容器 ---------- */
.section-a{padding:0 0 8px}
.read-wrap{max-width:860px;margin:0 auto;display:flex;flex-direction:column;gap:20px}

.article-head{
  background:var(--surface);
  border:1px solid var(--line);
  border-radius:var(--r-card);
  padding:32px 36px;
  box-shadow:var(--sh-card);
}
.eyebrow{
  display:inline-flex;align-items:center;gap:8px;
  font-size:13px;font-weight:600;color:var(--brand-deep);
  background:var(--brand-soft);border-radius:999px;padding:5px 14px;
}
.eyebrow::before{content:"";width:6px;height:6px;border-radius:50%;background:var(--accent)}
.article-head h1{
  font-size:clamp(26px,3.2vw,40px);
  line-height:1.34;font-weight:700;
  letter-spacing:-.3px;margin:18px 0 0;
}
.article-meta{
  display:flex;flex-wrap:wrap;align-items:center;gap:10px 18px;
  margin-top:20px;padding-top:18px;
  border-top:1px solid var(--line);
  font-size:14px;color:var(--ink-2);
}
.meta-item{display:inline-flex;align-items:center;gap:7px;font-variant-numeric:tabular-nums}
.meta-item i{width:6px;height:6px;border-radius:50%;background:var(--accent);display:inline-block}
.tag{
  display:inline-flex;align-items:center;
  padding:4px 13px;border-radius:999px;
  font-size:13px;font-weight:600;
  background:var(--brand-soft);color:var(--brand-deep);
  border:1px solid rgba(22,87,214,.14);
}
.tag-accent{background:rgba(18,198,166,.12);color:var(--accent-deep);border-color:rgba(18,198,166,.24)}

/* ---------- 正文 ---------- */
.article-shell{
  background:var(--surface);
  border:1px solid var(--line);
  border-radius:var(--r-card);
  padding:44px 40px 40px;
  box-shadow:var(--sh-card);
}
.article-body{max-width:740px;margin:0 auto;font-size:17px;line-height:1.9;color:var(--ink-1)}
.article-body>p:first-child{font-size:17.5px;color:var(--ink-1)}
.article-body p{margin:0 0 1.25em}
.article-body h2{
  font-size:26px;line-height:1.45;font-weight:700;
  margin:1.7em 0 .65em;padding-left:14px;
  border-left:4px solid var(--brand);border-radius:2px;
}
.article-body h3{font-size:20px;line-height:1.5;font-weight:600;margin:1.6em 0 .6em}
.article-body h4{font-size:17px;font-weight:600;margin:1.4em 0 .5em;color:var(--ink-2)}
.article-body ul,.article-body ol{margin:0 0 1.25em;padding-left:1.3em;line-height:1.85}
.article-body li{margin:.4em 0}
.article-body li::marker{color:var(--brand)}
.article-body img{border-radius:12px;margin:1.5em auto;box-shadow:var(--sh-card)}
.article-body figure{margin:1.5em 0}
.article-body figure figcaption{font-size:13.5px;color:var(--ink-3);text-align:center;margin-top:10px}
.article-body blockquote{
  margin:1.5em 0;padding:16px 22px;
  background:var(--surface-soft);
  border-left:3px solid var(--brand);
  border-radius:0 12px 12px 0;
  color:var(--ink-2);font-size:16px;
}
.article-body blockquote p:last-child{margin-bottom:0}
.article-body a{color:var(--brand);text-decoration:underline;text-underline-offset:3px;text-decoration-thickness:1px}
.article-body a:hover{color:var(--brand-deep)}
.article-body strong{font-weight:600;color:var(--ink-1)}
.article-body table{width:100%;border-collapse:collapse;margin:1.5em 0;font-size:15px}
.article-body th,.article-body td{border:1px solid var(--line);padding:11px 14px;text-align:left}
.article-body th{background:var(--surface-soft);font-weight:600;color:var(--ink-1)}
.article-body hr{border:none;border-top:1px solid var(--line);margin:2em 0}
.article-body code{background:var(--surface-soft);color:var(--brand-deep);padding:2px 7px;border-radius:6px;font-size:15px}

.empty-state{text-align:center;padding:48px 20px}
.empty-state .ico{
  width:58px;height:58px;border-radius:18px;
  background:var(--brand-soft);color:var(--brand);
  display:grid;place-items:center;margin:0 auto 18px;font-size:24px;font-weight:700;
}
.empty-state h3{font-size:20px;font-weight:600;margin:0 0 10px;color:var(--ink-1)}
.empty-state p{font-size:15px;color:var(--ink-2);margin:0 0 22px}

/* ---------- 文末 ---------- */
.article-foot{
  display:flex;align-items:center;justify-content:space-between;
  flex-wrap:wrap;gap:16px;
  background:var(--surface);
  border:1px solid var(--line);
  border-radius:var(--r-card);
  padding:20px 26px;
  box-shadow:var(--sh-card);
}
.tag-list{display:flex;flex-wrap:wrap;align-items:center;gap:8px}
.tag-list .label{font-size:13.5px;color:var(--ink-3)}

/* ---------- 相关推荐 ---------- */
.section{padding:56px 0}
.section-head{margin-bottom:30px;max-width:760px}
.section-head h2{font-size:28px;font-weight:700;line-height:1.4;margin:0 0 10px}
.section-head p{font-size:15px;color:var(--ink-2);margin:0}
.rel-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:24px}
.rel-card{
  display:flex;flex-direction:column;
  background:var(--surface);
  border:1px solid var(--line);
  border-radius:var(--r-card);
  overflow:hidden;
  box-shadow:var(--sh-card);
  transition:transform var(--ease),box-shadow var(--ease),border-color var(--ease);
}
.rel-card:hover{transform:translateY(-4px);box-shadow:var(--sh-hover);border-color:rgba(22,87,214,.20)}
.rel-card .thumb{position:relative;overflow:hidden}
.rel-card .thumb img{width:100%;aspect-ratio:16/9;object-fit:cover;transition:transform 320ms ease}
.rel-card:hover .thumb img{transform:scale(1.03)}
.rel-card .badge{
  position:absolute;left:12px;top:12px;
  background:rgba(15,27,46,.82);color:#fff;
  font-size:12px;font-weight:600;
  padding:4px 11px;border-radius:999px;
}
.rel-card .rc-body{padding:18px 20px 22px;display:flex;flex-direction:column;gap:8px;flex:1}
.rel-card h3{font-size:17px;font-weight:600;line-height:1.5;margin:0;transition:color var(--ease)}
.rel-card:hover h3{color:var(--brand)}
.rel-card p{font-size:14px;line-height:1.7;color:var(--ink-2);margin:0;display:-webkit-box;-webkit-line-clamp:2;-webkit-box-orient:vertical;overflow:hidden}
.rel-card .rc-more{margin-top:auto;font-size:13.5px;font-weight:600;color:var(--brand)}
.rel-card:focus-visible{outline:none;box-shadow:0 0 0 4px rgba(22,87,214,.22)}

/* ---------- 底部 CTA ---------- */
.cta-band{padding:8px 0 84px}
.cta-card{
  position:relative;overflow:hidden;
  background:var(--panel);
  border-radius:20px;
  padding:46px 48px;
  display:flex;align-items:center;justify-content:space-between;
  gap:32px;flex-wrap:wrap;
  box-shadow:0 18px 40px rgba(15,27,46,.18);
}
.cta-card::after{
  content:"";position:absolute;right:-60px;top:-60px;
  width:220px;height:220px;border-radius:50%;
  background:rgba(18,198,166,.14);
}
.cta-card .cta-copy{position:relative;z-index:1;max-width:560px}
.cta-card h2{color:#fff;font-size:26px;line-height:1.4;font-weight:700;margin:0 0 12px}
.cta-card p{color:#A9B6CB;font-size:15px;margin:0}
.cta-actions{position:relative;z-index:1;display:flex;gap:12px;flex-wrap:wrap}

/* ---------- 页脚 ---------- */
.site-foot{background:var(--panel);color:#C6D1E3;padding-top:60px}
.foot-grid{display:grid;grid-template-columns:1.7fr 1fr 1fr 1fr;gap:36px;padding-bottom:44px}
.foot-brand .brand-mark{margin-bottom:16px}
.foot-brand b{display:block;color:#fff;font-size:16px;font-weight:700;margin-bottom:12px}
.foot-brand p{font-size:14px;line-height:1.85;color:#93A2B8;margin:0;max-width:320px}
.foot-col h3{color:#fff;font-size:14px;font-weight:600;margin:0 0 16px}
.foot-col a{display:block;font-size:14px;color:#A9B6CB;padding:5px 0;transition:color var(--ease),transform var(--ease)}
.foot-col a:hover{color:var(--accent);transform:translateX(2px)}
.foot-col span{display:block;font-size:14px;color:#93A2B8;padding:5px 0;font-variant-numeric:tabular-nums}
.foot-bottom{
  border-top:1px solid rgba(255,255,255,.10);
  padding:22px 0;display:flex;justify-content:space-between;
  align-items:center;flex-wrap:wrap;gap:10px;
  font-size:13px;color:#8291A8;
}

/* ---------- 响应式 ---------- */
@media (max-width:1024px){
  .nav-links{display:none}
  .nav-links.open{
    display:grid;grid-template-columns:1fr 1fr;gap:8px;
    order:3;width:100%;margin:8px 0 4px;
    padding-top:12px;border-top:1px solid var(--line);
  }
  .nav-item{width:100%}
  .nav-cta{display:none}
  .nav-panel{flex-wrap:wrap}
  .brand{flex:1 1 auto}
  .burger{display:grid;margin-left:auto}
  .foot-grid{grid-template-columns:1fr 1fr}
  .rel-grid{grid-template-columns:repeat(2,1fr)}
}
@media (max-width:768px){
  .site-head{padding:10px 0}
  .nav-panel{border-radius:16px;padding:10px}
  .article-head{padding:24px 20px}
  .article-shell{padding:26px 20px 24px}
  .article-body{font-size:15.5px;line-height:1.85}
  .article-body h2{font-size:22px}
  .article-body h3{font-size:18px}
  .section{padding:40px 0}
  .section-head h2{font-size:22px}
  .rel-grid{grid-template-columns:1fr;gap:18px}
  .cta-band{padding:4px 0 56px}
  .cta-card{padding:30px 24px;border-radius:16px}
  .cta-card h2{font-size:21px}
  .cta-actions{width:100%}
  .cta-actions .btn{flex:1 1 auto}
  .article-foot{padding:18px 20px}
}
@media (max-width:520px){
  .container{padding:0 16px}
  .foot-grid{grid-template-columns:1fr;gap:26px}
  .nav-links.open{grid-template-columns:1fr}
  .brand-text span{display:none}
  .btn{height:44px;padding:0 18px;font-size:14.5px}
}

/* roulang page: category1 */
:root{
  --brand:#1657D6;
  --brand-deep:#0F46B0;
  --brand-soft:#EDF3FE;
  --brand-line:#CFE0FB;
  --accent:#12C6A6;
  --accent-2:#FF6A1F;
  --bg:#F6F8FC;
  --surface:#FFFFFF;
  --surface-soft:#EDF3FE;
  --line:#E3E9F2;
  --ink-1:#0E1A2E;
  --ink-2:#4A5A73;
  --ink-3:#8A97AC;
  --dark:#0F1B2E;
  --r-card:16px;
  --r-btn:12px;
  --sh-card:0 1px 2px rgba(14,26,46,.04), 0 8px 24px rgba(14,26,46,.06);
  --sh-hover:0 12px 32px rgba(14,26,46,.10);
  --container:1200px;
}
*,*::before,*::after{box-sizing:border-box}
html{-webkit-text-size-adjust:100%;scroll-behavior:smooth}
body{
  margin:0;
  background:var(--bg);
  color:var(--ink-1);
  font-family:"PingFang SC","HarmonyOS Sans SC","Microsoft YaHei","Noto Sans SC",system-ui,-apple-system,sans-serif;
  font-size:16px;
  line-height:1.85;
  font-weight:400;
}
h1,h2,h3,h4,p,ul,ol,figure,blockquote{margin:0}
ul,ol{padding:0;list-style:none}
img{display:block;max-width:100%;height:auto}
a{color:inherit;text-decoration:none;transition:color .2s ease}
button,input,select,textarea{font:inherit;color:inherit}
button{border:0;background:none;cursor:pointer}
:focus-visible{outline:2px solid rgba(22,87,214,.5);outline-offset:2px}
.num{font-variant-numeric:tabular-nums}
.container{width:100%;max-width:var(--container);margin:0 auto;padding:0 24px}

/* ---------- 顶部导航 ---------- */
.site-header{
  position:sticky;top:0;z-index:70;
  padding:14px 0;
  background:var(--bg);
  border-bottom:1px solid var(--line);
}
.nav-panel{
  display:flex;align-items:center;gap:18px;
  background:var(--surface);
  border:1px solid var(--line);
  border-radius:20px;
  padding:12px 16px;
  box-shadow:var(--sh-card);
}
.brand{display:flex;align-items:center;gap:12px;flex-shrink:0}
.brand-mark{
  width:44px;height:44px;border-radius:14px;
  background:var(--brand);color:#fff;
  display:grid;place-items:center;
  font-size:19px;font-weight:700;
  box-shadow:inset 0 -3px 0 rgba(0,0,0,.14);
}
.brand-text b{display:block;font-size:16px;font-weight:700;letter-spacing:.01em;line-height:1.25;color:var(--ink-1)}
.brand-text span{display:block;font-size:10px;letter-spacing:.18em;color:var(--ink-3);line-height:1.6}
.nav-links{display:flex;align-items:center;gap:6px;margin-left:auto}
.nav-item{
  position:relative;
  display:flex;align-items:center;gap:8px;
  padding:9px 13px;border-radius:12px;
  border:1px solid transparent;
  font-size:14px;color:var(--ink-2);
  white-space:nowrap;
  transition:background .2s ease,color .2s ease,border-color .2s ease;
}
.nav-item .dot{
  width:22px;height:22px;border-radius:8px;
  background:var(--surface-soft);color:var(--brand);
  display:grid;place-items:center;font-size:12px;font-weight:600;
  transition:background .2s ease,color .2s ease;
}
.nav-item:hover{background:var(--brand-soft);color:var(--brand);border-color:var(--brand-line)}
.nav-item.active{background:var(--brand-soft);color:var(--brand);font-weight:600;border-color:var(--brand-line)}
.nav-item.active .dot{background:var(--brand);color:#fff}
.nav-item.active::before{
  content:"";position:absolute;left:3px;top:50%;
  width:2px;height:18px;border-radius:2px;
  background:var(--brand);transform:translateY(-50%);
}
.nav-cta{margin-left:6px;flex-shrink:0}
.burger{
  display:none;width:44px;height:44px;border-radius:12px;
  border:1px solid var(--line);background:#fff;
  align-items:center;justify-content:center;
  margin-left:auto;flex-shrink:0;
}
.burger span{position:relative;display:block;width:18px;height:2px;border-radius:2px;background:var(--ink-1);transition:background .2s ease}
.burger span::before,.burger span::after{
  content:"";position:absolute;left:0;width:18px;height:2px;border-radius:2px;
  background:var(--ink-1);transition:transform .25s ease;
}
.burger span::before{top:-6px}
.burger span::after{top:6px}
body.nav-open .burger span{background:transparent}
body.nav-open .burger span::before{transform:translateY(6px) rotate(45deg)}
body.nav-open .burger span::after{transform:translateY(-6px) rotate(-45deg)}

/* ---------- 按钮 ---------- */
.btn{
  display:inline-flex;align-items:center;justify-content:center;gap:9px;
  height:48px;padding:0 22px;
  border-radius:var(--r-btn);
  border:1px solid transparent;
  font-size:15px;font-weight:600;
  transition:background .2s ease,color .2s ease,border-color .2s ease,box-shadow .2s ease,transform .15s ease;
}
.btn-sm{height:44px;padding:0 18px;font-size:14px}
.btn-primary{background:var(--brand);color:#fff;box-shadow:0 6px 16px rgba(22,87,214,.24)}
.btn-primary:hover{background:var(--brand-deep);box-shadow:0 10px 22px rgba(22,87,214,.28)}
.btn-primary:active{transform:translateY(1px);box-shadow:0 4px 12px rgba(22,87,214,.22)}
.btn-ghost{background:#fff;border-color:var(--line);color:var(--brand)}
.btn-ghost:hover{background:var(--brand-soft);border-color:var(--brand-line)}
.btn-outline-light{background:rgba(255,255,255,.08);border-color:rgba(255,255,255,.34);color:#fff}
.btn-outline-light:hover{background:rgba(255,255,255,.18);border-color:rgba(255,255,255,.6)}
.btn:focus-visible{outline:none;box-shadow:0 0 0 4px rgba(22,87,214,.25)}

/* ---------- 首屏横幅 ---------- */
.page-hero{
  position:relative;overflow:hidden;
  margin-top:26px;
  min-height:430px;
  display:flex;align-items:flex-end;
  border-radius:24px;
  background:var(--dark);
  color:#fff;
}
.page-hero .hero-bg{position:absolute;inset:0;width:100%;height:100%;object-fit:cover;opacity:.42}
.page-hero::after{
  content:"";position:absolute;inset:0;
  background:linear-gradient(100deg,rgba(15,27,46,.95) 0%,rgba(15,27,46,.84) 48%,rgba(15,27,46,.52) 100%);
}
.hero-inner{position:relative;z-index:2;padding:48px;max-width:840px}
.breadcrumb{
  display:flex;flex-wrap:wrap;align-items:center;gap:8px;
  font-size:13px;color:rgba(255,255,255,.72);margin-bottom:16px;
}
.breadcrumb a:hover{color:var(--accent)}
.breadcrumb .sep{opacity:.5}
.eyebrow{
  display:inline-flex;align-items:center;gap:8px;
  padding:6px 14px;border-radius:999px;
  background:rgba(18,198,166,.14);color:#7FF0D8;
  font-size:13px;font-weight:600;letter-spacing:.02em;
}
.eyebrow-dark{display:inline-flex;align-items:center;padding:6px 14px;border-radius:999px;background:var(--brand-soft);color:var(--brand);font-size:13px;font-weight:600}
.page-hero h1{font-size:44px;line-height:1.3;font-weight:700;letter-spacing:-.01em;margin:16px 0 14px}
.hero-sub{font-size:17px;line-height:1.9;color:rgba(255,255,255,.82);max-width:660px}
.hero-actions{display:flex;flex-wrap:wrap;gap:14px;margin-top:26px}
.hero-stats{
  display:grid;grid-template-columns:repeat(3,minmax(0,1fr));gap:18px;
  margin-top:34px;padding-top:22px;
  border-top:1px solid rgba(255,255,255,.16);
}
.hero-stats li b{display:block;font-size:26px;font-weight:700;color:#fff;font-variant-numeric:tabular-nums}
.hero-stats li span{font-size:13px;color:rgba(255,255,255,.7)}

/* ---------- 板块 ---------- */
.section{padding-top:76px}
.section-head{max-width:760px;margin-bottom:32px}
.section-head h2{font-size:30px;line-height:1.42;font-weight:700;margin:14px 0 12px}
.section-head p{color:var(--ink-2);font-size:16px}
.card{
  background:var(--surface);
  border:1px solid var(--line);
  border-radius:var(--r-card);
  box-shadow:var(--sh-card);
  padding:26px;
  transition:transform .2s ease,box-shadow .2s ease,border-color .2s ease;
}
.card:hover{transform:translateY(-3px);box-shadow:var(--sh-hover);border-color:var(--brand-line)}
.card h3{font-size:19px;font-weight:600;line-height:1.5;margin-bottom:10px}
.card p{font-size:15px;color:var(--ink-2);line-height:1.8}

/* ---------- 引言 + 指标 ---------- */
.intro-grid{display:grid;grid-template-columns:1.45fr 1fr;gap:24px;align-items:stretch}
.intro-card{display:flex;flex-direction:column;justify-content:space-between}
.intro-card h2{font-size:24px;line-height:1.5;font-weight:700;margin-bottom:14px}
.intro-card p{font-size:15.5px;color:var(--ink-2);line-height:1.9}
.quote{
  margin-top:24px;padding:18px 22px;
  border-left:3px solid var(--brand);
  background:var(--brand-soft);
  border-radius:0 12px 12px 0;
  font-size:15px;color:var(--ink-2);line-height:1.85;
}
.quote-by{display:flex;align-items:center;gap:10px;margin-top:14px;font-size:13px;color:var(--ink-3)}
.avatar{
  width:32px;height:32px;border-radius:999px;
  background:var(--dark);color:#fff;
  display:grid;place-items:center;font-size:13px;font-weight:600;
}
.metric-panel{background:var(--dark);border-radius:var(--r-card);padding:26px;color:#fff;box-shadow:var(--sh-card)}
.metric-panel h3{font-size:17px;font-weight:600;margin-bottom:8px}
.metric-panel .sub{font-size:13px;color:rgba(255,255,255,.62);margin-bottom:18px}
.metric{display:flex;gap:12px;align-items:flex-start;padding:15px 0;border-bottom:1px dashed rgba(255,255,255,.16)}
.metric:last-child{border-bottom:0;padding-bottom:0}
.metric i{
  flex:0 0 8px;width:8px;height:8px;border-radius:999px;
  background:var(--accent);margin-top:11px;
}
.metric b{display:block;font-size:15px;font-weight:600;color:#fff}
.metric span{font-size:13px;color:rgba(255,255,255,.66);line-height:1.75}

/* ---------- 两栏图文 ---------- */
.split{display:grid;grid-template-columns:1fr 1.05fr;gap:42px;align-items:center}
.split-media{
  border-radius:var(--r-card);overflow:hidden;
  border:1px solid var(--line);background:#fff;
  box-shadow:var(--sh-card);
}
.split-media img{width:100%;aspect-ratio:4/3;object-fit:cover}
.check-list{display:grid;gap:14px;margin-top:24px}
.check-list li{
  display:flex;gap:14px;align-items:flex-start;
  padding:16px 18px;background:#fff;
  border:1px solid var(--line);border-radius:14px;
  transition:border-color .2s ease,box-shadow .2s ease,transform .2s ease;
}
.check-list li:hover{border-color:var(--brand-line);box-shadow:var(--sh-card);transform:translateX(3px)}
.check-list .tick{
  flex:0 0 26px;width:26px;height:26px;border-radius:9px;
  background:var(--brand-soft);color:var(--brand);
  display:grid;place-items:center;font-size:13px;font-weight:700;margin-top:5px;
}
.check-list b{display:block;font-size:16px;font-weight:600;margin-bottom:2px}
.check-list p{font-size:14px;color:var(--ink-2);line-height:1.75;margin:0}

/* ---------- 能力卡 ---------- */
.cards-4{display:grid;grid-template-columns:repeat(4,minmax(0,1fr));gap:20px}
.cap-icon{
  width:44px;height:44px;border-radius:14px;
  background:var(--brand-soft);color:var(--brand);
  display:grid;place-items:center;font-size:16px;font-weight:700;margin-bottom:16px;
}
.tag{
  display:inline-flex;align-items:center;gap:6px;
  padding:4px 12px;border-radius:999px;
  background:rgba(18,198,166,.12);color:#0B8C76;
  font-size:12px;font-weight:600;
}
.tag-signal{background:rgba(255,106,31,.12);color:#C24A0C}

/* ---------- 流程 ---------- */
.timeline{display:grid;grid-template-columns:repeat(4,minmax(0,1fr));gap:20px}
.step{
  background:#fff;border:1px solid var(--line);
  border-radius:var(--r-card);padding:24px;
  box-shadow:var(--sh-card);
  transition:transform .2s ease,box-shadow .2s ease,border-color .2s ease;
}
.step:hover{transform:translateY(-3px);box-shadow:var(--sh-hover);border-color:var(--brand-line)}
.step::before{content:"";display:block;width:36px;height:3px;border-radius:2px;background:var(--brand);margin-bottom:16px}
.step .idx{font-size:12px;font-weight:700;color:var(--ink-3);letter-spacing:.14em}
.step h3{font-size:18px;font-weight:600;margin:8px 0 8px}
.step p{font-size:14px;color:var(--ink-2);line-height:1.78}

/* ---------- FAQ ---------- */
.faq-list{display:grid;gap:14px;max-width:900px}
.faq-item{
  background:#fff;border:1px solid var(--line);
  border-radius:var(--r-card);box-shadow:var(--sh-card);overflow:hidden;
}
.faq-item summary{
  list-style:none;cursor:pointer;
  display:flex;align-items:center;justify-content:space-between;gap:18px;
  padding:20px 24px;font-size:16px;font-weight:600;color:var(--ink-1);
}
.faq-item summary::-webkit-details-marker{display:none}
.faq-item summary:hover{color:var(--brand)}
.faq-item .sign{
  flex:0 0 26px;width:26px;height:26px;border-radius:8px;
  background:var(--brand-soft);color:var(--brand);
  display:grid;place-items:center;font-size:16px;font-weight:700;
  transition:transform .25s ease;
}
.faq-item[open] .sign{transform:rotate(45deg)}
.faq-item .answer{padding:0 24px 22px;font-size:15px;color:var(--ink-2);line-height:1.85}

/* ---------- 底部 CTA ---------- */
.cta-band{position:relative;overflow:hidden;border-radius:24px;background:var(--dark);color:#fff}
.cta-band .band-bg{position:absolute;inset:0;width:100%;height:100%;object-fit:cover;opacity:.3}
.cta-band::after{
  content:"";position:absolute;inset:0;
  background:linear-gradient(120deg,rgba(15,27,46,.95) 0%,rgba(15,27,46,.82) 60%,rgba(15,27,46,.7) 100%);
}
.cta-inner{position:relative;z-index:2;display:grid;grid-template-columns:1fr 1fr;gap:42px;padding:48px}
.cta-copy h2{font-size:29px;font-weight:700;line-height:1.45;margin:14px 0 14px}
.cta-copy p{font-size:15.5px;color:rgba(255,255,255,.78);line-height:1.9}
.cta-points{display:grid;gap:10px;margin-top:22px}
.cta-points li{display:flex;gap:10px;align-items:flex-start;font-size:14px;color:rgba(255,255,255,.82)}
.cta-points li i{flex:0 0 6px;width:6px;height:6px;border-radius:999px;background:var(--accent);margin-top:11px}
.form-card{background:#fff;border-radius:var(--r-card);padding:26px;color:var(--ink-1);box-shadow:var(--sh-hover)}
.form-card h3{font-size:19px;font-weight:600;margin-bottom:6px}
.form-card .form-tip{font-size:13px;color:var(--ink-3);margin-bottom:18px}
.field{margin-bottom:16px}
.field label{display:block;font-size:14px;color:var(--ink-2);margin-bottom:8px}
.field input,.field textarea{
  width:100%;background:#fff;border:1px solid var(--line);
  border-radius:var(--r-btn);padding:12px 14px;font-size:15px;line-height:1.6;
  transition:border-color .2s ease,box-shadow .2s ease;
}
.field input{height:48px}
.field textarea{min-height:108px;resize:vertical}
.field input:focus,.field textarea:focus{outline:none;border-color:var(--brand);box-shadow:0 0 0 4px rgba(22,87,214,.12)}
.form-note{font-size:13px;color:var(--ink-3);margin-top:12px}
.form-ok{
  display:none;margin-top:14px;padding:12px 14px;border-radius:12px;
  background:rgba(18,198,166,.12);color:#0B8C76;font-size:14px;
}
.form-ok.show{display:block}
.btn-block{width:100%}

/* ---------- 页脚 ---------- */
.site-footer{margin-top:84px;background:var(--dark);color:rgba(255,255,255,.7);padding:56px 0 28px}
.footer-grid{display:grid;grid-template-columns:1.6fr 1fr 1fr 1.2fr;gap:32px}
.footer-brand{display:flex;align-items:center;gap:12px;margin-bottom:16px}
.footer-brand .brand-mark{box-shadow:none}
.footer-brand b{display:block;color:#fff;font-size:16px;font-weight:700;line-height:1.3}
.footer-brand span{display:block;font-size:10px;letter-spacing:.18em;color:rgba(255,255,255,.5)}
.footer-col h4{color:#fff;font-size:15px;font-weight:600;margin-bottom:14px}
.footer-col a{display:block;font-size:14px;padding:6px 0;color:rgba(255,255,255,.68)}
.footer-col a:hover{color:var(--accent)}
.footer-col p{font-size:14px;line-height:1.9;color:rgba(255,255,255,.68);margin-bottom:6px}
.footer-bottom{
  margin-top:36px;padding-top:20px;
  border-top:1px solid rgba(255,255,255,.12);
  display:flex;flex-wrap:wrap;justify-content:space-between;gap:10px;
  font-size:13px;color:rgba(255,255,255,.55);
}

/* ---------- 浮动 CTA ---------- */
.float-cta{
  position:fixed;right:28px;bottom:28px;z-index:65;
  display:flex;align-items:center;gap:10px;
  opacity:0;visibility:hidden;transform:translateY(14px);
  transition:opacity .28s ease,transform .28s ease,visibility .28s ease;
}
.float-cta.show{opacity:1;visibility:visible;transform:translateY(0)}
.float-cta .btn{height:52px;border-radius:999px;padding:0 24px;box-shadow:0 12px 28px rgba(22,87,214,.32)}
.pulse{
  width:8px;height:8px;border-radius:999px;background:var(--accent-2);
  animation:pulse 2s infinite;
}
@keyframes pulse{
  0%{box-shadow:0 0 0 0 rgba(255,106,31,.5)}
  70%{box-shadow:0 0 0 10px rgba(255,106,31,0)}
  100%{box-shadow:0 0 0 0 rgba(255,106,31,0)}
}

/* ---------- 响应式 ---------- */
@media (max-width:1023px){
  .nav-links{
    position:fixed;left:16px;right:16px;top:88px;
    display:none;flex-direction:column;align-items:stretch;gap:8px;
    margin-left:0;padding:14px;
    background:#fff;border:1px solid var(--line);
    border-radius:20px;box-shadow:var(--sh-hover);z-index:80;
  }
  body.nav-open .nav-links{display:flex}
  .nav-item{padding:12px 14px;font-size:15px}
  .nav-cta{display:none}
  .burger{display:flex}
  .page-hero h1{font-size:36px}
  .intro-grid{grid-template-columns:1fr}
  .split{grid-template-columns:1fr;gap:28px}
  .cards-4{grid-template-columns:repeat(2,minmax(0,1fr))}
  .timeline{grid-template-columns:repeat(2,minmax(0,1fr))}
  .cta-inner{grid-template-columns:1fr;padding:38px}
  .footer-grid{grid-template-columns:1fr 1fr}
  .section{padding-top:58px}
}
@media (max-width:640px){
  body{font-size:15px}
  .container{padding:0 16px}
  .site-header{padding:10px 0}
  .brand-text span{display:none}
  .nav-panel{padding:10px 12px;gap:12px}
  .nav-links{top:76px}
  .page-hero{margin-top:16px;border-radius:18px;min-height:0}
  .hero-inner{padding:30px 22px}
  .page-hero h1{font-size:27px;line-height:1.38}
  .hero-sub{font-size:15px}
  .hero-actions{gap:10px}
  .hero-actions .btn{height:46px;padding:0 18px;font-size:14px}
  .hero-stats{grid-template-columns:1fr 1fr;gap:16px}
  .hero-stats li b{font-size:22px}
  .section{padding-top:48px}
  .section-head h2{font-size:23px}
  .section-head{margin-bottom:24px}
  .card{padding:20px}
  .cards-4{grid-template-columns:1fr}
  .timeline{grid-template-columns:1fr}
  .cta-inner{padding:28px 20px}
  .cta-copy h2{font-size:23px}
  .form-card{padding:20px}
  .footer-grid{grid-template-columns:1fr;gap:24px}
  .site-footer{margin-top:60px;padding:44px 0 24px}
  .float-cta{
    left:0;right:0;bottom:0;padding:12px 16px calc(12px + env(safe-area-inset-bottom));
    background:#fff;border-top:1px solid var(--line);
    transform:none;gap:10px;
  }
  .float-cta .btn{flex:1;height:46px;padding:0 12px;box-shadow:none}
}

/* roulang page: category2 */
:root{
  --brand:#1657D6;
  --brand-deep:#0F46B0;
  --accent:#12C6A6;
  --accent-2:#FF6A1F;
  --bg:#F6F8FC;
  --surface:#FFFFFF;
  --surface-soft:#EDF3FE;
  --dark:#0F1B2E;
  --line:#E3E9F2;
  --ink-1:#0E1A2E;
  --ink-2:#4A5A73;
  --ink-3:#8A97AC;
  --r-card:16px;
  --r-btn:12px;
  --sh-card:0 1px 2px rgba(14,26,46,.04), 0 8px 24px rgba(14,26,46,.06);
  --sh-hover:0 12px 32px rgba(14,26,46,.10);
}
*,*::before,*::after{box-sizing:border-box}
html{scroll-behavior:smooth;-webkit-text-size-adjust:100%}
body.app-body{
  margin:0;
  font-family:"PingFang SC","HarmonyOS Sans SC","Microsoft YaHei","Noto Sans SC",system-ui,-apple-system,sans-serif;
  background:var(--bg);
  color:var(--ink-1);
  font-size:16px;
  line-height:1.8;
  -webkit-font-smoothing:antialiased;
}
img{display:block;max-width:100%}
a{color:inherit;text-decoration:none}
button,input,textarea,select{font-family:inherit;font-size:inherit}
:focus-visible{outline:2px solid rgba(22,87,214,.45);outline-offset:2px;border-radius:8px}
.container{width:100%;max-width:1200px;margin:0 auto;padding:0 20px}
.num{font-variant-numeric:tabular-nums}

/* ===== 按钮 ===== */
.btn{
  display:inline-flex;align-items:center;justify-content:center;gap:8px;
  height:46px;padding:0 22px;border-radius:var(--r-btn);
  font-size:15px;font-weight:600;border:1px solid transparent;
  cursor:pointer;transition:background-color .2s ease,color .2s ease,border-color .2s ease,transform .2s ease,box-shadow .2s ease;
  white-space:nowrap;
}
.btn-primary{background:var(--brand);color:#fff;box-shadow:0 8px 20px rgba(22,87,214,.22)}
.btn-primary:hover{background:var(--brand-deep);transform:translateY(-1px);box-shadow:0 12px 26px rgba(22,87,214,.28)}
.btn-primary:active{transform:translateY(1px);box-shadow:0 4px 12px rgba(22,87,214,.20)}
.btn-ghost{background:#fff;border-color:var(--line);color:var(--brand)}
.btn-ghost:hover{background:var(--surface-soft);border-color:#C9DAF8}
.btn-ghost:active{transform:translateY(1px)}
.btn-sm{height:40px;padding:0 16px;font-size:14px}
.btn-block{width:100%}
.link-arrow{display:inline-flex;align-items:center;gap:6px;color:var(--brand);font-size:14px;font-weight:600;transition:gap .2s ease,color .2s ease}
.link-arrow:hover{gap:10px;color:var(--brand-deep)}

/* ===== 头部导航 ===== */
.site-header{position:sticky;top:0;z-index:50;background:var(--bg);border-bottom:1px solid var(--line);padding:12px 0}
.nav-panel{
  position:relative;display:flex;align-items:center;gap:16px;
  background:var(--surface);border:1px solid var(--line);
  border-radius:var(--r-card);box-shadow:var(--sh-card);
  padding:10px 14px;
}
.brand{display:flex;align-items:center;gap:10px;flex:0 0 auto;border-radius:10px}
.brand-mark{
  width:40px;height:40px;border-radius:12px;background:var(--brand);color:#fff;
  display:flex;align-items:center;justify-content:center;font-size:17px;font-weight:700;flex:0 0 auto;
}
.brand-text b{display:block;font-size:15px;font-weight:700;line-height:1.35;color:var(--ink-1)}
.brand-text span{display:block;font-size:10px;letter-spacing:1.6px;color:var(--ink-3);line-height:1.4}
.nav-links{display:flex;align-items:center;gap:6px;flex:1 1 auto;justify-content:center}
.nav-item{
  display:inline-flex;align-items:center;gap:8px;
  padding:7px 12px;border-radius:11px;font-size:14px;color:var(--ink-2);
  border:1px solid transparent;transition:background-color .2s ease,color .2s ease,border-color .2s ease;
  white-space:nowrap;
}
.nav-item .dot{
  width:24px;height:24px;border-radius:8px;background:var(--surface-soft);color:var(--brand);
  display:flex;align-items:center;justify-content:center;font-size:12px;font-weight:700;flex:0 0 auto;
}
.nav-item:hover{background:var(--surface-soft);color:var(--brand);border-color:#D4E2FB}
.nav-item.active{background:var(--surface-soft);color:var(--brand);font-weight:700;border-color:#D4E2FB;box-shadow:inset 3px 0 0 0 var(--brand)}
.nav-cta{flex:0 0 auto}
.burger{
  display:none;width:44px;height:44px;flex:0 0 auto;margin-left:auto;
  border:1px solid var(--line);border-radius:12px;background:#fff;cursor:pointer;
  align-items:center;justify-content:center;
}
.burger span{position:relative;display:block;width:18px;height:2px;background:var(--ink-1);border-radius:2px;transition:background-color .2s ease}
.burger span::before,.burger span::after{content:"";position:absolute;left:0;width:18px;height:2px;background:var(--ink-1);border-radius:2px;transition:transform .2s ease,top .2s ease}
.burger span::before{top:-6px}
.burger span::after{top:6px}
.nav-panel.open .burger span{background:transparent}
.nav-panel.open .burger span::before{top:0;transform:rotate(45deg)}
.nav-panel.open .burger span::after{top:0;transform:rotate(-45deg)}

/* ===== 通用板块 ===== */
.section{padding:80px 0}
.section-soft{background:var(--surface-soft)}
.eyebrow{
  display:inline-flex;align-items:center;gap:6px;
  font-size:13px;font-weight:700;letter-spacing:.8px;color:var(--brand);
  background:rgba(22,87,214,.08);border-radius:999px;padding:5px 12px;
}
.eyebrow.mint{color:#0B8E77;background:rgba(18,198,166,.12)}
.section-head{max-width:760px;margin-bottom:36px}
.section-head h2{font-size:clamp(22px,2.6vw,30px);font-weight:700;line-height:1.45;color:var(--ink-1);margin:14px 0 12px}
.section-head p{font-size:16px;color:var(--ink-2);margin:0}
.badge{display:inline-flex;align-items:center;height:26px;padding:0 12px;border-radius:999px;background:rgba(22,87,214,.08);color:var(--brand);font-size:12px;font-weight:700}
.badge-mint{background:rgba(18,198,166,.14);color:#0B8E77}
.badge-orange{background:rgba(255,106,31,.12);color:#C94F0C}

/* ===== 首屏 ===== */
.page-hero{padding:32px 0 0}
.hero-card{
  display:grid;grid-template-columns:1fr 1fr;gap:0;
  background:var(--surface);border:1px solid var(--line);border-radius:var(--r-card);
  box-shadow:var(--sh-card);overflow:hidden;min-height:520px;
}
.hero-copy{padding:48px 44px;display:flex;flex-direction:column;justify-content:center}
.crumb{display:flex;align-items:center;gap:8px;font-size:13px;color:var(--ink-3);margin-bottom:18px}
.crumb a{color:var(--ink-2);transition:color .2s ease}
.crumb a:hover{color:var(--brand)}
.crumb .current{color:var(--brand);font-weight:600}
.hero-copy h1{font-size:clamp(28px,3.4vw,44px);font-weight:700;line-height:1.32;color:var(--ink-1);margin:16px 0 16px;letter-spacing:-.2px}
.hero-sub{font-size:17px;color:var(--ink-2);margin:0 0 28px;line-height:1.8}
.hero-actions{display:flex;flex-wrap:wrap;gap:12px;margin-bottom:32px}
.hero-stats{list-style:none;display:grid;grid-template-columns:repeat(4,minmax(0,1fr));gap:12px;margin:0;padding:0}
.hero-stats li{background:var(--surface-soft);border-radius:12px;padding:12px 10px;text-align:center}
.hero-stats b{display:block;font-size:22px;font-weight:700;color:var(--brand);font-variant-numeric:tabular-nums;line-height:1.3}
.hero-stats span{display:block;font-size:12px;color:var(--ink-2);line-height:1.5;margin-top:2px}
.hero-media{position:relative;min-height:320px;background:var(--surface-soft)}
.hero-media img{position:absolute;inset:0;width:100%;height:100%;object-fit:cover}

/* ===== 引言卡 ===== */
.intro-card{
  background:var(--surface);border:1px solid var(--line);border-radius:var(--r-card);
  box-shadow:var(--sh-card);padding:36px 40px;
  display:grid;grid-template-columns:1.05fr 1fr;gap:36px;align-items:center;
}
.intro-card h2{font-size:clamp(21px,2.3vw,27px);font-weight:700;line-height:1.45;margin:14px 0 12px}
.intro-card p{color:var(--ink-2);margin:0;font-size:15.5px}
.check-list{list-style:none;margin:0;padding:0;display:grid;gap:12px}
.check-list li{
  display:flex;gap:12px;align-items:flex-start;
  background:var(--surface-soft);border-radius:12px;padding:14px 16px;font-size:15px;color:var(--ink-1);
}
.check-list li b{display:block;font-weight:700;margin-bottom:2px}
.check-list li span{color:var(--ink-2);font-size:14px}
.check-mark{
  width:24px;height:24px;border-radius:8px;background:var(--accent);color:#fff;flex:0 0 auto;
  display:flex;align-items:center;justify-content:center;font-size:13px;font-weight:700;margin-top:3px;
}

/* ===== 筛选与设备卡 ===== */
.chip-row{display:flex;flex-wrap:wrap;gap:10px;margin:0 0 28px}
.chip{
  height:42px;padding:0 18px;border-radius:999px;border:1px solid var(--line);
  background:#fff;color:var(--ink-2);font-size:14px;cursor:pointer;
  transition:background-color .2s ease,color .2s ease,border-color .2s ease,box-shadow .2s ease;
}
.chip:hover{border-color:#C9DAF8;color:var(--brand);background:var(--surface-soft)}
.chip.is-active{background:var(--brand);border-color:var(--brand);color:#fff;font-weight:600;box-shadow:0 8px 18px rgba(22,87,214,.22)}
.device-grid{display:grid;grid-template-columns:repeat(3,minmax(0,1fr));gap:24px}
.device-card{
  display:flex;flex-direction:column;background:var(--surface);
  border:1px solid var(--line);border-radius:var(--r-card);overflow:hidden;
  box-shadow:var(--sh-card);
  transition:transform .22s ease,box-shadow .22s ease,border-color .22s ease;
}
.device-card:hover{transform:translateY(-4px);box-shadow:var(--sh-hover);border-color:#D4E2FB}
.device-media{overflow:hidden;background:var(--surface-soft)}
.device-media img{width:100%;aspect-ratio:16/9;object-fit:cover;transition:transform .35s ease}
.device-card:hover .device-media img{transform:scale(1.03)}
.device-body{padding:22px 24px 24px;display:flex;flex-direction:column;flex:1 1 auto}
.device-body h3{font-size:19px;font-weight:700;line-height:1.5;margin:12px 0 8px;color:var(--ink-1)}
.device-body p{font-size:14.5px;color:var(--ink-2);line-height:1.75;margin:0 0 16px}
.spec-list{list-style:none;margin:0 0 18px;padding:0;display:grid;gap:7px;border-top:1px dashed var(--line);padding-top:14px}
.spec-list li{display:flex;justify-content:space-between;gap:12px;font-size:13.5px;color:var(--ink-2)}
.spec-list li b{color:var(--ink-1);font-weight:600;font-variant-numeric:tabular-nums}
.device-body .link-arrow{margin-top:auto}

/* ===== 场景图文 ===== */
.split{display:grid;grid-template-columns:1fr 1fr;gap:40px;align-items:center;margin-bottom:56px}
.split:last-child{margin-bottom:0}
.split.reverse .split-media{order:2}
.split-media img{width:100%;border-radius:var(--r-card);box-shadow:var(--sh-card);aspect-ratio:4/3;object-fit:cover}
.split-copy h3{font-size:clamp(20px,2.1vw,25px);font-weight:700;line-height:1.5;margin:14px 0 14px}
.split-copy p{color:var(--ink-2);font-size:15.5px;margin:0 0 20px}
.dot-list{list-style:none;margin:0;padding:0;display:grid;gap:10px}
.dot-list li{position:relative;padding-left:20px;font-size:15px;color:var(--ink-2)}
.dot-list li::before{content:"";position:absolute;left:0;top:11px;width:7px;height:7px;border-radius:50%;background:var(--accent)}
.dot-list li b{color:var(--ink-1);font-weight:600}

/* ===== 流程时间线 ===== */
.steps{display:grid;grid-template-columns:repeat(4,minmax(0,1fr));gap:20px;counter-reset:step}
.step{
  position:relative;background:var(--surface);border:1px solid var(--line);
  border-radius:var(--r-card);box-shadow:var(--sh-card);padding:26px 22px;
  transition:transform .22s ease,box-shadow .22s ease;
}
.step:hover{transform:translateY(-3px);box-shadow:var(--sh-hover)}
.step-num{
  width:38px;height:38px;border-radius:12px;background:var(--surface-soft);color:var(--brand);
  display:flex;align-items:center;justify-content:center;font-size:16px;font-weight:700;
  font-variant-numeric:tabular-nums;margin-bottom:14px;
}
.step h3{font-size:17px;font-weight:700;margin:0 0 8px}
.step p{font-size:14.5px;color:var(--ink-2);margin:0;line-height:1.75}
.step-tag{position:absolute;top:22px;right:20px;font-size:12px;color:var(--ink-3);font-variant-numeric:tabular-nums}

/* ===== FAQ ===== */
.faq-wrap{max-width:900px}
.faq-item{
  background:var(--surface);border:1px solid var(--line);border-radius:var(--r-card);
  box-shadow:var(--sh-card);margin-bottom:12px;overflow:hidden;
}
.faq-item summary{
  list-style:none;cursor:pointer;display:flex;align-items:center;justify-content:space-between;gap:16px;
  padding:20px 24px;font-size:16.5px;font-weight:600;color:var(--ink-1);
}
.faq-item summary::-webkit-details-marker{display:none}
.faq-item summary::after{
  content:"+";flex:0 0 auto;width:28px;height:28px;border-radius:999px;
  background:var(--surface-soft);color:var(--brand);
  display:flex;align-items:center;justify-content:center;font-size:18px;font-weight:700;
  transition:transform .25s ease,background-color .25s ease,color .25s ease;
}
.faq-item[open] summary::after{content:"−";transform:rotate(180deg);background:var(--brand);color:#fff}
.faq-item[open] summary{color:var(--brand)}
.faq-body{padding:0 24px 22px;font-size:15px;color:var(--ink-2);line-height:1.85}

/* ===== 底部 CTA ===== */
.cta-band{
  background:var(--dark);border-radius:var(--r-card);padding:52px 48px;
  display:grid;grid-template-columns:1fr 1fr;gap:44px;align-items:start;
}
.cta-copy h2{font-size:clamp(22px,2.5vw,29px);font-weight:700;color:#fff;line-height:1.45;margin:16px 0 14px}
.cta-copy p{color:#B9C6DA;font-size:15.5px;margin:0 0 22px}
.cta-points{list-style:none;margin:0;padding:0;display:grid;gap:10px}
.cta-points li{display:flex;gap:10px;align-items:flex-start;font-size:14.5px;color:#CBD6E6}
.cta-points li::before{content:"";width:8px;height:8px;border-radius:50%;background:var(--accent);flex:0 0 auto;margin-top:11px}
.cta-form{background:#fff;border-radius:var(--r-card);padding:28px}
.field{margin-bottom:16px}
.field label{display:block;font-size:14px;color:var(--ink-2);margin-bottom:8px;font-weight:500}
.field input,.field textarea{
  width:100%;border:1px solid var(--line);border-radius:var(--r-btn);
  background:#fff;color:var(--ink-1);padding:0 14px;height:48px;
  transition:border-color .2s ease,box-shadow .2s ease;
}
.field textarea{height:112px;padding:12px 14px;line-height:1.7;resize:vertical}
.field input::placeholder,.field textarea::placeholder{color:#A9B4C6}
.field input:focus,.field textarea:focus{outline:none;border-color:var(--brand);box-shadow:0 0 0 4px rgba(22,87,214,.12)}
.field .hint{font-size:13px;color:var(--ink-3);margin:8px 0 0}
.form-note{font-size:13px;color:var(--ink-3);margin:14px 0 0;text-align:center}

/* ===== 浮动 CTA ===== */
.float-cta{
  position:fixed;right:24px;bottom:24px;z-index:60;
  display:flex;flex-direction:column;gap:10px;align-items:flex-end;
  opacity:0;transform:translateY(14px);pointer-events:none;
  transition:opacity .25s ease,transform .25s ease;
}
.float-cta.show{opacity:1;transform:translateY(0);pointer-events:auto}
.float-cta .btn{box-shadow:0 14px 30px rgba(14,26,46,.20)}
.float-cta .float-secondary{display:none}
.pulse{
  width:8px;height:8px;border-radius:50%;background:var(--accent-2);flex:0 0 auto;
  animation:pulseRing 2s infinite;
}
@keyframes pulseRing{
  0%{box-shadow:0 0 0 0 rgba(255,106,31,.55)}
  70%{box-shadow:0 0 0 9px rgba(255,106,31,0)}
  100%{box-shadow:0 0 0 0 rgba(255,106,31,0)}
}

/* ===== 页脚 ===== */
.site-footer{background:var(--dark);color:#B9C6DA;padding:64px 0 28px;margin-top:80px}
.footer-top{display:grid;grid-template-columns:1.15fr 2fr;gap:48px;padding-bottom:40px;border-bottom:1px solid rgba(255,255,255,.10)}
.footer-brand .brand-mark{background:var(--brand)}
.footer-brand .brand-text b{color:#fff}
.footer-brand .brand-text span{color:#7C8CA5}
.footer-brand p{font-size:14.5px;color:#98A8C0;margin:18px 0 20px;line-height:1.8;max-width:340px}
.footer-note{
  display:inline-flex;align-items:center;gap:10px;font-size:13.5px;color:#C7D2E2;
  background:rgba(255,255,255,.06);border:1px solid rgba(255,255,255,.10);
  border-radius:999px;padding:7px 16px 7px 7px;
}
.footer-note .avatar{
  width:28px;height:28px;border-radius:50%;background:#fff;color:var(--dark);
  display:flex;align-items:center;justify-content:center;font-size:13px;font-weight:700;flex:0 0 auto;
}
.footer-cols{display:grid;grid-template-columns:repeat(3,minmax(0,1fr));gap:32px}
.footer-col h3{font-size:14px;font-weight:700;color:#fff;margin:0 0 16px;letter-spacing:.6px}
.footer-col a,.footer-col p{display:block;font-size:14px;color:#98A8C0;margin:0 0 10px;transition:color .2s ease}
.footer-col a:hover{color:var(--accent)}
.footer-bottom{display:flex;flex-wrap:wrap;gap:10px;justify-content:space-between;align-items:center;padding-top:24px}
.footer-bottom p{margin:0;font-size:13.5px;color:#7C8CA5}

/* ===== 响应式 ===== */
@media (max-width:1023px){
  .section{padding:56px 0}
  .nav-links{
    position:absolute;top:calc(100% + 12px);left:0;right:0;display:none;
    flex-direction:column;align-items:stretch;gap:6px;padding:12px;
    background:#fff;border:1px solid var(--line);border-radius:var(--r-card);box-shadow:var(--sh-hover);
  }
  .nav-panel.open .nav-links{display:flex}
  .nav-cta{display:none}
  .burger{display:flex}
  .hero-card{grid-template-columns:1fr;min-height:0}
  .hero-copy{padding:36px 28px}
  .hero-media{min-height:260px}
  .intro-card{grid-template-columns:1fr;gap:26px;padding:30px 28px}
  .device-grid{grid-template-columns:repeat(2,minmax(0,1fr))}
  .steps{grid-template-columns:repeat(2,minmax(0,1fr))}
  .cta-band{grid-template-columns:1fr;gap:32px;padding:40px 32px}
  .footer-top{grid-template-columns:1fr;gap:36px}
  .split{gap:28px}
}
@media (max-width:767px){
  .section{padding:48px 0}
  .site-footer{margin-top:56px;padding-top:48px}
  .hero-stats{grid-template-columns:repeat(2,minmax(0,1fr))}
  .device-grid{grid-template-columns:1fr}
  .split{grid-template-columns:1fr;margin-bottom:44px}
  .split.reverse .split-media{order:0}
  .steps{grid-template-columns:1fr}
  .footer-cols{grid-template-columns:1fr;gap:26px}
  .float-cta{
    left:0;right:0;bottom:0;flex-direction:row;align-items:center;gap:10px;
    padding:12px 16px 14px;background:#fff;border-top:1px solid var(--line);
    box-shadow:0 -10px 26px rgba(14,26,46,.10);transform:translateY(100%);
  }
  .float-cta.show{transform:translateY(0)}
  .float-cta .btn{flex:1 1 auto;height:48px}
  .float-cta .float-secondary{display:inline-flex;flex:0 0 auto;padding:0 16px}
  .float-cta .btn-primary{box-shadow:0 8px 18px rgba(22,87,214,.22)}
}
@media (max-width:520px){
  .container{padding:0 16px}
  .hero-copy{padding:28px 20px}
  .hero-copy h1{font-size:27px}
  .hero-actions .btn{flex:1 1 100%}
  .brand-text span{display:none}
  .cta-band{padding:32px 20px}
  .cta-form{padding:22px 18px}
  .intro-card{padding:24px 20px}
}

/* roulang page: category3 */
:root{
  --brand:#1657D6;
  --brand-deep:#0F46B0;
  --brand-soft:#EDF3FE;
  --accent:#12C6A6;
  --accent-2:#FF6A1F;
  --bg:#F6F8FC;
  --surface:#FFFFFF;
  --surface-soft:#EDF3FE;
  --line:#E3E9F2;
  --ink-1:#0E1A2E;
  --ink-2:#4A5A73;
  --ink-3:#8A97AC;
  --dark:#0F1B2E;
  --r-card:16px;
  --r-btn:12px;
  --r-pill:999px;
  --sh-card:0 1px 2px rgba(14,26,46,.04),0 8px 24px rgba(14,26,46,.06);
  --sh-hover:0 12px 32px rgba(14,26,46,.10);
}
*,*::before,*::after{box-sizing:border-box;}
html{-webkit-text-size-adjust:100%;scroll-behavior:smooth;}
body{
  margin:0;
  background:var(--bg);
  color:var(--ink-1);
  font-family:"PingFang SC","HarmonyOS Sans SC","Microsoft YaHei","Noto Sans SC",system-ui,-apple-system,sans-serif;
  font-size:16px;
  line-height:1.8;
  -webkit-font-smoothing:antialiased;
}
img{display:block;max-width:100%;height:auto;}
a{color:inherit;text-decoration:none;}
button{font:inherit;color:inherit;background:none;border:0;cursor:pointer;}
ul,ol{margin:0;padding:0;list-style:none;}
h1,h2,h3,h4{margin:0;font-weight:700;line-height:1.32;letter-spacing:-.01em;}
p{margin:0;}
:focus-visible{outline:2px solid rgba(22,87,214,.45);outline-offset:2px;border-radius:8px;}
.container{width:100%;max-width:1200px;margin:0 auto;padding:0 20px;}
.tnum{font-variant-numeric:tabular-nums;}

/* ---------- 顶部导航 ---------- */
.site-header{
  position:sticky;top:0;z-index:60;
  padding:12px 0 14px;
  background:linear-gradient(180deg,#F6F8FC 0%,#F6F8FC 72%,rgba(246,248,252,.86) 100%);
}
.nav-panel{
  position:relative;
  display:flex;align-items:center;gap:16px;
  background:var(--surface);
  border:1px solid var(--line);
  border-radius:18px;
  box-shadow:var(--sh-card);
  padding:10px 14px;
}
.brand{display:flex;align-items:center;gap:10px;flex:0 0 auto;}
.brand-mark{
  width:38px;height:38px;border-radius:12px;flex:0 0 38px;
  background:var(--brand);color:#fff;
  display:grid;place-items:center;font-size:17px;font-weight:700;
  box-shadow:0 6px 16px rgba(22,87,214,.28);
}
.brand-text{display:block;}
.brand-text b{display:block;font-size:15px;line-height:1.25;white-space:nowrap;}
.brand-text span{display:block;font-size:10px;letter-spacing:.16em;color:var(--ink-3);}
.nav-links{display:flex;align-items:center;gap:6px;flex:1 1 auto;justify-content:center;}
.nav-item{
  position:relative;
  display:inline-flex;align-items:center;gap:8px;
  min-height:44px;padding:7px 12px;
  border-radius:12px;border:1px solid transparent;
  font-size:14px;color:var(--ink-2);
  transition:background .2s ease,color .2s ease,border-color .2s ease;
}
.nav-item .dot{
  width:24px;height:24px;flex:0 0 24px;border-radius:8px;
  background:var(--brand-soft);color:var(--brand);
  display:grid;place-items:center;font-size:12px;font-weight:600;
}
.nav-item:hover{background:var(--brand-soft);color:var(--brand);border-color:#CFE0FB;}
.nav-item.active{background:var(--brand-soft);color:var(--brand);font-weight:600;}
.nav-item.active::before{
  content:"";position:absolute;left:-6px;top:12px;bottom:12px;width:2px;
  border-radius:2px;background:var(--brand);
}
.nav-cta{display:flex;align-items:center;gap:10px;flex:0 0 auto;}
.nav-drawer-cta{display:none;}

.btn{
  display:inline-flex;align-items:center;justify-content:center;gap:8px;
  border-radius:var(--r-btn);font-weight:600;font-size:15px;
  white-space:nowrap;
  transition:background .2s ease,color .2s ease,box-shadow .2s ease,transform .18s ease,border-color .2s ease;
}
.btn-sm{height:44px;padding:0 16px;font-size:14px;}
.btn-lg{height:48px;padding:0 22px;font-size:15px;}
.btn-primary{background:var(--brand);color:#fff;box-shadow:0 6px 18px rgba(22,87,214,.24);}
.btn-primary:hover{background:var(--brand-deep);box-shadow:0 10px 24px rgba(22,87,214,.30);}
.btn-primary:active{transform:translateY(1px);}
.btn-ghost{background:#fff;color:var(--brand);border:1px solid var(--line);}
.btn-ghost:hover{background:var(--brand-soft);border-color:#CFE0FB;}
.btn-ghost:active{transform:translateY(1px);}
.btn[disabled]{opacity:.4;cursor:not-allowed;}

.burger{
  display:none;width:44px;height:44px;flex:0 0 44px;margin-left:auto;
  border:1px solid var(--line);border-radius:12px;background:#fff;
  flex-direction:column;align-items:center;justify-content:center;gap:4px;
}
.burger::before,.burger::after,.burger span{
  content:"";display:block;width:18px;height:2px;border-radius:2px;background:var(--ink-1);
  transition:transform .22s ease,opacity .22s ease;
}
.nav-panel.open .burger::before{transform:translateY(6px) rotate(45deg);}
.nav-panel.open .burger span{opacity:0;}
.nav-panel.open .burger::after{transform:translateY(-6px) rotate(-45deg);}

/* ---------- 通用区块 ---------- */
.section{padding:80px 0;}
.section-white{background:#fff;border-top:1px solid var(--line);border-bottom:1px solid var(--line);}
.section-head{max-width:760px;margin-bottom:38px;}
.eyebrow{
  display:inline-flex;align-items:center;gap:8px;
  padding:6px 14px;border-radius:var(--r-pill);
  background:var(--brand-soft);color:var(--brand);
  font-size:13px;font-weight:600;
}
.eyebrow i{width:6px;height:6px;border-radius:50%;background:var(--accent);}
.eyebrow-plain{display:inline-block;font-size:13px;font-weight:600;color:var(--accent);letter-spacing:.08em;}
.section-title{font-size:30px;margin-top:12px;}
.section-sub{margin-top:14px;color:var(--ink-2);font-size:16px;}

/* ---------- 首屏 ---------- */
.hero{padding:48px 0 72px;background:
  radial-gradient(900px 420px at 12% -10%,rgba(22,87,214,.10),transparent 62%),
  radial-gradient(700px 360px at 96% 6%,rgba(18,198,166,.12),transparent 60%);
}
.hero-grid{display:grid;grid-template-columns:1.05fr .95fr;gap:48px;align-items:center;}
.crumbs{display:flex;flex-wrap:wrap;align-items:center;gap:8px;font-size:13px;color:var(--ink-3);margin-bottom:18px;}
.crumbs a{color:var(--ink-2);transition:color .2s ease;}
.crumbs a:hover{color:var(--brand);}
.crumb-sep{color:#C3CDDD;}
.page-title{font-size:44px;margin-top:18px;}
.page-title em{font-style:normal;color:var(--brand);}
.hero-sub{margin-top:18px;font-size:17px;color:var(--ink-2);max-width:56ch;}
.hero-actions{display:flex;flex-wrap:wrap;gap:14px;margin-top:28px;}
.hero-stats{display:grid;grid-template-columns:repeat(3,1fr);gap:14px;margin-top:36px;}
.stat{background:#fff;border:1px solid var(--line);border-radius:14px;padding:14px 16px;box-shadow:var(--sh-card);}
.stat b{display:block;font-size:24px;line-height:1.3;color:var(--ink-1);font-variant-numeric:tabular-nums;}
.stat span{font-size:13px;color:var(--ink-3);}
.hero-visual{position:relative;}
.hero-visual img{width:100%;aspect-ratio:16/11;object-fit:cover;border-radius:var(--r-card);box-shadow:var(--sh-hover);}
.hero-chip{
  position:absolute;left:-14px;bottom:22px;
  display:inline-flex;align-items:center;gap:10px;
  background:#fff;border:1px solid var(--line);border-radius:14px;
  padding:10px 16px;box-shadow:var(--sh-card);font-size:13px;color:var(--ink-2);
}
.hero-chip i{width:8px;height:8px;border-radius:50%;background:var(--accent-2);}

/* ---------- 引言卡 ---------- */
.intro-card{
  display:grid;grid-template-columns:1.35fr 1fr;gap:32px;align-items:center;
  background:#fff;border:1px solid var(--line);border-radius:var(--r-card);
  padding:30px;box-shadow:var(--sh-card);
}
.intro-card img{width:100%;aspect-ratio:4/3;object-fit:cover;border-radius:12px;}
.intro-card h2{font-size:24px;}
.intro-card p{margin-top:14px;color:var(--ink-2);font-size:15.5px;}
.intro-list{margin-top:18px;}
.intro-list li{position:relative;padding-left:24px;margin-bottom:10px;color:var(--ink-2);font-size:15px;}
.intro-list li::before{content:"";position:absolute;left:0;top:11px;width:8px;height:8px;border-radius:50%;background:var(--accent);}

/* ---------- 步骤时间线 ---------- */
.timeline{position:relative;margin-top:6px;}
.timeline::before{
  content:"";position:absolute;left:26px;top:12px;bottom:12px;width:2px;
  background:linear-gradient(180deg,var(--brand) 0%,rgba(22,87,214,.18) 100%);
}
.step{position:relative;display:grid;grid-template-columns:56px 1fr;gap:22px;padding-bottom:24px;}
.step:last-child{padding-bottom:0;}
.step-idx{
  position:relative;z-index:1;
  width:54px;height:54px;border-radius:16px;
  background:#fff;border:1px solid var(--line);
  display:grid;place-items:center;
  font-weight:700;color:var(--brand);font-variant-numeric:tabular-nums;
  box-shadow:var(--sh-card);
}
.step-body{
  background:#fff;border:1px solid var(--line);border-radius:var(--r-card);
  padding:22px 24px;box-shadow:var(--sh-card);
  transition:transform .2s ease,box-shadow .2s ease;
}
.step-body:hover{transform:translateY(-2px);box-shadow:var(--sh-hover);}
.step-head{display:flex;flex-wrap:wrap;align-items:center;gap:12px;}
.step-head h3{font-size:19px;}
.step-meta{
  display:inline-flex;align-items:center;gap:6px;
  font-size:12.5px;color:var(--brand);background:var(--brand-soft);
  border-radius:var(--r-pill);padding:3px 12px;font-weight:600;
}
.step-body p{margin-top:12px;color:var(--ink-2);font-size:15px;}
.step-body ul{margin-top:12px;}
.step-body ul li{position:relative;padding-left:18px;margin-bottom:8px;color:var(--ink-2);font-size:14.5px;}
.step-body ul li::before{content:"";position:absolute;left:0;top:11px;width:6px;height:6px;border-radius:2px;background:#B9CBEB;}

/* ---------- 图文对照 ---------- */
.split{display:grid;grid-template-columns:1fr 1fr;gap:48px;align-items:center;}
.split img{width:100%;aspect-ratio:5/4;object-fit:cover;border-radius:var(--r-card);box-shadow:var(--sh-card);}
.check-list{margin-top:22px;display:grid;gap:12px;}
.check-list li{
  display:flex;gap:12px;align-items:flex-start;
  background:#fff;border:1px solid var(--line);border-radius:14px;
  padding:14px 18px;box-shadow:var(--sh-card);font-size:15px;color:var(--ink-2);
  transition:transform .2s ease,box-shadow .2s ease;
}
.check-list li:hover{transform:translateY(-2px);box-shadow:var(--sh-hover);}
.check-list b{display:block;color:var(--ink-1);font-size:15.5px;margin-bottom:2px;}
.check-mark{
  width:22px;height:22px;flex:0 0 22px;border-radius:7px;margin-top:3px;
  background:rgba(18,198,166,.14);color:#0B8E77;
  display:grid;place-items:center;font-size:13px;font-weight:700;
}

/* ---------- 常用操作卡片 ---------- */
.quick-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:24px;}
.qcard{
  display:flex;flex-direction:column;overflow:hidden;
  background:#fff;border:1px solid var(--line);border-radius:var(--r-card);
  box-shadow:var(--sh-card);
  transition:transform .22s ease,box-shadow .22s ease;
}
.qcard:hover{transform:translateY(-4px);box-shadow:var(--sh-hover);}
.qcard-thumb{overflow:hidden;}
.qcard img{width:100%;aspect-ratio:16/9;object-fit:cover;transition:transform .35s ease;}
.qcard:hover img{transform:scale(1.03);}
.qcard-body{padding:20px 22px 24px;display:flex;flex-direction:column;gap:10px;flex:1 1 auto;}
.qcard-body h3{font-size:18px;transition:color .2s ease;}
.qcard:hover .qcard-body h3{color:var(--brand);}
.qcard-body p{color:var(--ink-2);font-size:14.5px;}
.tag{display:inline-flex;align-items:center;padding:4px 12px;border-radius:var(--r-pill);font-size:12px;font-weight:600;}
.tag-brand{background:var(--brand-soft);color:var(--brand);}
.tag-accent{background:rgba(18,198,166,.14);color:#0B8E77;}
.tag-signal{background:rgba(255,106,31,.12);color:#C64A0B;}
.qcard-foot{margin-top:auto;display:flex;align-items:center;justify-content:space-between;font-size:13px;color:var(--ink-3);}

/* ---------- FAQ ---------- */
.faq-list{display:grid;gap:14px;max-width:900px;}
.faq-item{background:#fff;border:1px solid var(--line);border-radius:var(--r-card);box-shadow:var(--sh-card);overflow:hidden;}
.faq-q{
  width:100%;min-height:44px;
  display:flex;align-items:center;justify-content:space-between;gap:16px;
  padding:20px 24px;text-align:left;font-size:16.5px;font-weight:600;color:var(--ink-1);
  transition:color .2s ease;
}
.faq-q:hover{color:var(--brand);}
.sign{position:relative;width:22px;height:22px;flex:0 0 22px;}
.sign::before,.sign::after{
  content:"";position:absolute;background:var(--brand);border-radius:2px;
  transition:transform .25s ease,opacity .25s ease;
}
.sign::before{left:3px;right:3px;top:10px;height:2px;}
.sign::after{top:3px;bottom:3px;left:10px;width:2px;}
.faq-item.open .sign::after{transform:scaleY(0);opacity:0;}
.faq-a{max-height:0;overflow:hidden;transition:max-height .3s ease;}
.faq-a-inner{padding:0 24px 22px;color:var(--ink-2);font-size:15px;}

/* ---------- CTA 表单区 ---------- */
.cta-band{
  background:var(--dark);color:#fff;border-radius:20px;
  padding:46px;display:grid;grid-template-columns:1.05fr .95fr;gap:42px;
  box-shadow:0 24px 48px rgba(14,26,46,.16);
}
.cta-band h2{font-size:28px;color:#fff;margin-top:14px;}
.cta-band p{margin-top:14px;color:#B9C6DA;font-size:15.5px;max-width:46ch;}
.cta-points{margin-top:24px;display:grid;gap:10px;}
.cta-points li{display:flex;align-items:center;gap:10px;font-size:14.5px;color:#C7D2E4;}
.cta-points i{width:8px;height:8px;border-radius:50%;background:var(--accent);flex:0 0 8px;}
.form-row{display:grid;gap:8px;margin-bottom:16px;}
.form-row label{font-size:14px;color:rgba(255,255,255,.72);}
.form-row input,.form-row textarea{
  width:100%;height:48px;padding:0 14px;
  border-radius:var(--r-btn);border:1px solid rgba(255,255,255,.18);
  background:rgba(255,255,255,.06);color:#fff;font-size:15px;font-family:inherit;
  transition:border-color .2s ease,box-shadow .2s ease,background .2s ease;
}
.form-row textarea{height:96px;padding:12px 14px;resize:vertical;line-height:1.7;}
.form-row input::placeholder,.form-row textarea::placeholder{color:rgba(199,210,228,.55);}
.form-row input:focus,.form-row textarea:focus{
  outline:none;border-color:var(--accent);background:rgba(255,255,255,.10);
  box-shadow:0 0 0 4px rgba(18,198,166,.18);
}
.form-hint{font-size:13px;color:#8A97AC;margin-top:12px;}

/* ---------- 页脚 ---------- */
.site-footer{background:var(--dark);color:#C7D2E4;padding:56px 0 28px;margin-top:0;}
.footer-grid{display:grid;grid-template-columns:1.5fr 1fr 1fr 1fr;gap:32px;}
.footer-brand{display:flex;align-items:center;gap:10px;}
.footer-brand .brand-mark{box-shadow:none;}
.footer-brand b{color:#fff;font-size:16px;}
.footer-brand span{display:block;font-size:10px;letter-spacing:.16em;color:#7C8BA5;}
.footer-desc{margin-top:16px;font-size:14px;color:#9FB0C9;max-width:38ch;}
.footer-quote{
  display:flex;align-items:center;gap:10px;margin-top:18px;
  padding:12px 16px;border-radius:14px;
  background:rgba(255,255,255,.05);border:1px solid rgba(255,255,255,.08);
  font-size:14px;color:#C7D2E4;
}
.avatar{
  width:28px;height:28px;flex:0 0 28px;border-radius:50%;
  background:var(--brand);color:#fff;
  display:grid;place-items:center;font-size:13px;font-weight:600;
}
.footer-links h4{color:#fff;font-size:14px;margin-bottom:14px;letter-spacing:.04em;}
.footer-links a{display:block;padding:6px 0;font-size:14px;color:#9FB0C9;transition:color .2s ease;}
.footer-links a:hover{color:var(--accent);}
.footer-contact p{font-size:14px;color:#9FB0C9;margin-bottom:8px;}
.footer-contact b{color:#fff;font-weight:600;}
.footer-bottom{
  margin-top:34px;padding-top:20px;border-top:1px solid rgba(255,255,255,.10);
  display:flex;flex-wrap:wrap;gap:12px;justify-content:space-between;
  font-size:13px;color:#8A97AC;
}

/* ---------- 浮动 CTA ---------- */
.float-cta{
  position:fixed;right:24px;bottom:24px;z-index:70;
  display:inline-flex;align-items:center;gap:10px;
  height:52px;padding:0 22px;border-radius:var(--r-pill);
  background:var(--brand);color:#fff;font-weight:600;font-size:15px;
  box-shadow:0 12px 32px rgba(14,26,46,.18);
  opacity:0;visibility:hidden;transform:translateY(12px);
  transition:opacity .25s ease,transform .25s ease,visibility .25s ease,background .2s ease;
}
.float-cta.show{opacity:1;visibility:visible;transform:translateY(0);}
.float-cta:hover{background:var(--brand-deep);}
.float-cta .pulse{width:8px;height:8px;border-radius:50%;background:var(--accent-2);flex:0 0 8px;}

/* ---------- 响应式 ---------- */
@media (max-width:1024px){
  .burger{display:flex;}
  .nav-cta{display:none;}
  .nav-links{
    position:absolute;left:0;right:0;top:calc(100% + 10px);
    display:none;flex-direction:column;align-items:stretch;gap:6px;
    background:#fff;border:1px solid var(--line);border-radius:var(--r-card);
    box-shadow:var(--sh-hover);padding:12px;z-index:80;
  }
  .nav-panel.open .nav-links{display:flex;}
  .nav-item{width:100%;}
  .nav-item.active::before{left:2px;top:14px;bottom:14px;}
  .nav-drawer-cta{display:block;margin-top:6px;}
  .nav-drawer-cta .btn{width:100%;}
  .hero-grid{grid-template-columns:1fr;gap:34px;}
  .hero-visual{order:2;}
  .page-title{font-size:36px;}
  .intro-card{grid-template-columns:1fr;gap:24px;}
  .split{grid-template-columns:1fr;gap:30px;}
  .quick-grid{grid-template-columns:repeat(2,1fr);}
  .cta-band{grid-template-columns:1fr;padding:34px;}
  .footer-grid{grid-template-columns:1fr 1fr;}
}
@media (max-width:768px){
  .section{padding:48px 0;}
  .hero{padding:32px 0 48px;}
  .page-title{font-size:30px;}
  .section-title{font-size:24px;}
  .cta-band h2{font-size:23px;}
  .hero-stats{grid-template-columns:1fr 1fr;}
  .step{grid-template-columns:44px 1fr;gap:14px;}
  .step-idx{width:42px;height:42px;border-radius:12px;font-size:15px;}
  .timeline::before{left:21px;}
  .step-body{padding:18px;}
}
@media (max-width:520px){
  .container{padding:0 16px;}
  .quick-grid{grid-template-columns:1fr;}
  .hero-stats{grid-template-columns:1fr;}
  .footer-grid{grid-template-columns:1fr;}
  .hero-chip{left:8px;bottom:12px;}
  .float-cta{left:12px;right:12px;bottom:12px;height:54px;border-radius:14px;justify-content:center;}
  .brand-text b{font-size:14px;}
  .brand-text span{display:none;}
}

/* roulang page: category4 */
:root{
  --brand:#1657D6;
  --brand-deep:#0F46B0;
  --brand-soft:#EDF3FE;
  --accent:#12C6A6;
  --accent-2:#FF6A1F;
  --bg:#F6F8FC;
  --surface:#FFFFFF;
  --surface-soft:#EDF3FE;
  --dark:#0F1B2E;
  --line:#E3E9F2;
  --ink-1:#0E1A2E;
  --ink-2:#4A5A73;
  --ink-3:#8A97AC;
  --r-card:16px;
  --r-btn:12px;
  --sh-card:0 1px 2px rgba(14,26,46,.04),0 8px 24px rgba(14,26,46,.06);
  --sh-hover:0 12px 32px rgba(14,26,46,.10);
}
*,*::before,*::after{box-sizing:border-box;}
html{-webkit-text-size-adjust:100%;}
body{
  margin:0;
  background:var(--bg);
  color:var(--ink-1);
  font-family:"PingFang SC","HarmonyOS Sans SC","Microsoft YaHei","Noto Sans SC",system-ui,-apple-system,"Segoe UI",sans-serif;
  font-size:16px;
  line-height:1.85;
  -webkit-font-smoothing:antialiased;
}
img{max-width:100%;display:block;border-radius:12px;}
a{color:var(--brand);text-decoration:none;transition:color .2s ease;}
a:hover{color:var(--brand-deep);}
button,input,textarea{font-family:inherit;font-size:inherit;}
ul,ol{margin:0;padding:0;list-style:none;}
h1,h2,h3,h4,p{margin:0;}
table{border-collapse:separate;border-spacing:0;}
.sr-only{position:absolute;width:1px;height:1px;padding:0;margin:-1px;overflow:hidden;clip:rect(0,0,0,0);white-space:nowrap;border:0;}
:focus-visible{outline:3px solid rgba(22,87,214,.4);outline-offset:2px;border-radius:6px;}
.container{width:100%;max-width:1200px;margin:0 auto;padding:0 20px;}

/* ============ 头部导航 ============ */
.site-header{
  position:sticky;top:0;z-index:80;
  background:var(--bg);
  padding:14px 0;
}
.nav-panel{
  display:flex;align-items:center;gap:18px;
  background:var(--surface);
  border:1px solid var(--line);
  border-radius:18px;
  padding:10px 14px;
  box-shadow:var(--sh-card);
  position:relative;
}
.brand{display:flex;align-items:center;gap:10px;flex:none;}
.brand:hover{color:inherit;}
.brand-mark{
  width:38px;height:38px;flex:none;
  display:flex;align-items:center;justify-content:center;
  background:var(--brand);color:#fff;
  border-radius:11px;font-size:17px;font-weight:700;
  box-shadow:0 6px 14px rgba(22,87,214,.28);
}
.brand-text{display:flex;flex-direction:column;line-height:1.2;}
.brand-text b{font-size:15px;font-weight:700;color:var(--ink-1);letter-spacing:.2px;}
.brand-text span{font-size:9px;letter-spacing:1.6px;color:var(--ink-3);font-weight:600;}
.nav-links{display:flex;align-items:center;gap:6px;flex:1;justify-content:center;}
.nav-item{
  position:relative;
  display:inline-flex;align-items:center;gap:8px;
  padding:8px 12px;border-radius:12px;
  font-size:14px;color:var(--ink-2);
  border:1px solid transparent;
  transition:background .2s ease,color .2s ease,border-color .2s ease;
  white-space:nowrap;
}
.nav-item .dot{
  width:22px;height:22px;flex:none;
  display:grid;place-items:center;
  background:var(--brand-soft);color:var(--brand);
  border-radius:8px;font-size:11px;font-weight:700;
}
.nav-item:hover{background:var(--brand-soft);color:var(--brand-deep);border-color:#D6E2FB;}
.nav-item.active{background:var(--brand-soft);color:var(--brand-deep);font-weight:600;border-color:#D6E2FB;}
.nav-item.active::before{
  content:"";position:absolute;left:2px;top:50%;transform:translateY(-50%);
  width:3px;height:16px;border-radius:2px;background:var(--brand);
}
.nav-cta{display:flex;align-items:center;gap:8px;flex:none;}
.burger{
  display:none;
  width:44px;height:44px;flex:none;
  align-items:center;justify-content:center;
  background:var(--surface);border:1px solid var(--line);border-radius:12px;
  cursor:pointer;
}
.burger span,.burger span::before,.burger span::after{
  content:"";display:block;width:18px;height:2px;border-radius:2px;background:var(--ink-1);
  transition:transform .2s ease,opacity .2s ease;
}
.burger span::before{transform:translateY(-6px);}
.burger span::after{transform:translateY(4px);}

/* ============ 按钮 ============ */
.btn{
  display:inline-flex;align-items:center;justify-content:center;gap:8px;
  min-height:48px;padding:0 22px;
  border-radius:var(--r-btn);
  font-size:15px;font-weight:600;line-height:1;
  border:1px solid transparent;
  cursor:pointer;
  transition:background .2s ease,color .2s ease,border-color .2s ease,transform .2s ease,box-shadow .2s ease;
}
.btn-primary{background:var(--brand);color:#fff;box-shadow:0 8px 20px rgba(22,87,214,.24);}
.btn-primary:hover{background:var(--brand-deep);color:#fff;transform:translateY(-1px);box-shadow:0 12px 26px rgba(22,87,214,.3);}
.btn-primary:active{transform:translateY(1px);}
.btn-ghost{background:#fff;color:var(--brand-deep);border-color:var(--line);}
.btn-ghost:hover{border-color:var(--brand);color:var(--brand);transform:translateY(-1px);}
.btn-ghost:active{transform:translateY(1px);}
.btn-sm{min-height:40px;padding:0 16px;font-size:14px;}
.btn-block{width:100%;}

/* ============ 通用板块 ============ */
.section{padding:76px 0;}
.section-soft{background:var(--surface-soft);}
.section-head{max-width:760px;margin-bottom:38px;}
.eyebrow{
  display:inline-flex;align-items:center;gap:8px;
  font-size:14px;font-weight:600;color:var(--brand);
  background:#fff;border:1px solid var(--line);
  padding:6px 14px;border-radius:999px;
  margin-bottom:16px;
}
.eyebrow i{color:var(--accent);font-size:12px;}
.sec-title{font-size:30px;line-height:1.4;font-weight:700;color:var(--ink-1);letter-spacing:-.2px;}
.sec-sub{margin-top:14px;font-size:16px;color:var(--ink-2);line-height:1.9;max-width:720px;}
.num{font-variant-numeric:tabular-nums;}

/* ============ 横幅 ============ */
.banner-wrap{padding:18px 0 0;}
.banner{
  position:relative;overflow:hidden;border-radius:24px;
  background-image:url("/assets/images/backpic/back-2.webp");
  background-size:cover;background-position:center right;
  border:1px solid var(--line);
}
.banner::before{
  content:"";position:absolute;inset:0;
  background:linear-gradient(96deg,rgba(246,248,252,.97) 0%,rgba(246,248,252,.93) 46%,rgba(237,243,254,.68) 100%);
}
.banner-inner{
  position:relative;z-index:1;
  display:grid;grid-template-columns:1.25fr .85fr;gap:44px;align-items:center;
  padding:58px 48px;
}
.crumb{display:flex;align-items:center;gap:8px;font-size:13px;color:var(--ink-3);margin-bottom:18px;}
.crumb a{color:var(--ink-3);}
.crumb a:hover{color:var(--brand);}
.crumb span{color:var(--ink-2);font-weight:600;}
.page-title{
  font-size:42px;line-height:1.28;font-weight:700;color:var(--ink-1);letter-spacing:-.5px;
}
.page-title em{font-style:normal;color:var(--brand);}
.lead{margin-top:18px;font-size:17px;line-height:1.95;color:var(--ink-2);max-width:600px;}
.hero-actions{display:flex;flex-wrap:wrap;gap:12px;margin-top:30px;}
.hero-tags{display:flex;flex-wrap:wrap;gap:10px;margin-top:26px;}
.tag{
  display:inline-flex;align-items:center;gap:6px;
  font-size:13px;color:var(--ink-2);
  background:#fff;border:1px solid var(--line);
  padding:6px 12px;border-radius:999px;
}
.tag i{color:var(--accent);font-size:11px;}

.mini-card{
  background:#fff;border:1px solid var(--line);border-radius:18px;
  box-shadow:var(--sh-card);padding:22px 22px 10px;
}
.mini-head{
  display:flex;align-items:center;gap:9px;
  font-size:14px;font-weight:700;color:var(--ink-1);
  padding-bottom:14px;border-bottom:1px solid var(--line);
}
.pulse-dot{
  width:9px;height:9px;border-radius:50%;background:var(--accent);
  box-shadow:0 0 0 4px rgba(18,198,166,.16);flex:none;
}
.mini-list li{
  display:flex;align-items:center;justify-content:space-between;gap:12px;
  padding:13px 0;border-bottom:1px dashed var(--line);font-size:14px;color:var(--ink-2);
}
.mini-list li:last-child{border-bottom:none;}
.mini-list b{font-size:13px;font-weight:700;color:var(--ink-1);font-variant-numeric:tabular-nums;}
.mini-list b.ok{color:#0F8F79;background:rgba(18,198,166,.12);padding:3px 10px;border-radius:999px;}

/* ============ 数据条 ============ */
.stats-grid{display:grid;grid-template-columns:repeat(4,1fr);gap:20px;}
.stat-card{
  background:#fff;border:1px solid var(--line);border-radius:var(--r-card);
  padding:24px;box-shadow:var(--sh-card);
  transition:transform .2s ease,box-shadow .2s ease,border-color .2s ease;
}
.stat-card:hover{transform:translateY(-3px);box-shadow:var(--sh-hover);border-color:#D6E2FB;}
.stat-num{font-size:28px;font-weight:700;color:var(--brand);font-variant-numeric:tabular-nums;line-height:1.2;}
.stat-label{margin-top:8px;font-size:14px;color:var(--ink-2);line-height:1.7;}

/* ============ 图文卡 ============ */
.intro-card{
  display:grid;grid-template-columns:1.05fr .95fr;gap:40px;align-items:center;
  background:#fff;border:1px solid var(--line);border-radius:20px;
  padding:40px;box-shadow:var(--sh-card);
}
.intro-media{position:relative;}
.intro-media img{width:100%;height:100%;object-fit:cover;border-radius:16px;}
.intro-media::after{
  content:"";position:absolute;inset:auto -10px -10px auto;width:100px;height:100px;
  border-radius:16px;background:rgba(18,198,166,.14);z-index:-1;
}
.check-list{margin-top:22px;display:grid;gap:14px;}
.check-list li{
  display:flex;gap:12px;align-items:flex-start;
  font-size:15px;color:var(--ink-2);line-height:1.8;
}
.check-list i{
  flex:none;width:24px;height:24px;margin-top:5px;
  display:grid;place-items:center;border-radius:8px;
  background:var(--brand-soft);color:var(--brand);font-size:11px;
}
.check-list b{color:var(--ink-1);font-weight:600;}

/* ============ 对比表 ============ */
.spec-wrap{
  background:#fff;border:1px solid var(--line);border-radius:18px;
  overflow:hidden;box-shadow:var(--sh-card);
}
.spec-table{width:100%;}
.spec-table thead th{
  background:var(--brand-soft);color:var(--brand-deep);
  font-size:15px;font-weight:700;text-align:left;
  padding:18px 22px;border-bottom:1px solid var(--line);
}
.spec-table thead th:first-child{border-top-left-radius:18px;}
.spec-table thead th:last-child{border-top-right-radius:18px;}
.spec-table tbody th{
  font-size:15px;font-weight:600;color:var(--ink-1);text-align:left;
  padding:18px 22px;border-bottom:1px solid var(--line);
  background:#fff;width:22%;
}
.spec-table tbody td{
  font-size:15px;color:var(--ink-2);
  padding:18px 22px;border-bottom:1px solid var(--line);
  vertical-align:top;
}
.spec-table tbody tr:last-child th,
.spec-table tbody tr:last-child td{border-bottom:none;}
.spec-table tbody tr:hover th,
.spec-table tbody tr:hover td{background:#FAFCFF;}
.spec-table td.hl{background:rgba(18,198,166,.06);color:var(--ink-1);font-weight:600;}
.spec-table tbody tr:hover td.hl{background:rgba(18,198,166,.1);}
.badge-reco{
  display:inline-block;margin-left:8px;
  font-size:11px;font-weight:700;color:#fff;
  background:var(--accent);border-radius:999px;padding:2px 9px;vertical-align:middle;
}

/* ============ 流程时间线 ============ */
.timeline{display:grid;grid-template-columns:repeat(4,1fr);gap:22px;position:relative;}
.step{
  position:relative;
  background:#fff;border:1px solid var(--line);border-radius:var(--r-card);
  padding:26px 22px;box-shadow:var(--sh-card);
  transition:transform .2s ease,box-shadow .2s ease;
}
.step:hover{transform:translateY(-3px);box-shadow:var(--sh-hover);}
.step-num{
  width:40px;height:40px;border-radius:13px;
  display:grid;place-items:center;
  background:var(--brand-soft);color:var(--brand);
  font-size:15px;font-weight:700;font-variant-numeric:tabular-nums;
  margin-bottom:16px;
}
.step h3{font-size:18px;font-weight:700;color:var(--ink-1);margin-bottom:8px;}
.step p{font-size:14px;color:var(--ink-2);line-height:1.85;}

/* ============ FAQ ============ */
.faq-list{display:grid;gap:14px;max-width:900px;}
.faq-item{
  background:#fff;border:1px solid var(--line);border-radius:var(--r-card);
  box-shadow:var(--sh-card);overflow:hidden;
  transition:border-color .2s ease,box-shadow .2s ease;
}
.faq-item[open]{border-color:#D6E2FB;box-shadow:var(--sh-hover);}
.faq-item summary{
  list-style:none;cursor:pointer;
  display:flex;align-items:center;justify-content:space-between;gap:16px;
  padding:20px 24px;
  font-size:16px;font-weight:600;color:var(--ink-1);
}
.faq-item summary::-webkit-details-marker{display:none;}
.faq-item summary:hover{color:var(--brand);}
.faq-icon{
  flex:none;width:26px;height:26px;border-radius:9px;
  background:var(--brand-soft);position:relative;
}
.faq-icon::before,.faq-icon::after{
  content:"";position:absolute;left:50%;top:50%;
  transform:translate(-50%,-50%);background:var(--brand);border-radius:2px;
  transition:transform .2s ease,opacity .2s ease;
}
.faq-icon::before{width:12px;height:2px;}
.faq-icon::after{width:2px;height:12px;}
.faq-item[open] .faq-icon::after{transform:translate(-50%,-50%) rotate(90deg);opacity:0;}
.faq-answer{
  padding:0 24px 22px;font-size:15px;color:var(--ink-2);line-height:1.9;
  border-top:1px solid var(--line);margin-top:0;padding-top:16px;
}

/* ============ CTA 表单 ============ */
.cta-panel{
  background:var(--dark);border-radius:22px;
  padding:52px 48px;
  display:grid;grid-template-columns:1fr 1fr;gap:44px;align-items:start;
}
.cta-panel .eyebrow{background:rgba(255,255,255,.08);border-color:rgba(255,255,255,.16);color:#8FB6FF;}
.cta-panel .sec-title{color:#fff;}
.cta-panel .sec-sub{color:#A9B6C9;}
.cta-points{margin-top:26px;display:grid;gap:12px;}
.cta-points li{display:flex;gap:10px;align-items:flex-start;font-size:15px;color:#C8D3E2;line-height:1.8;}
.cta-points i{flex:none;color:var(--accent);margin-top:6px;font-size:12px;}
.form-card{background:#fff;border-radius:18px;padding:28px;box-shadow:var(--sh-card);}
.form-grid{display:grid;gap:16px;}
.field{display:grid;gap:8px;}
.field label{font-size:14px;color:var(--ink-2);font-weight:600;}
.field input,.field textarea{
  width:100%;min-height:48px;
  background:#fff;border:1px solid var(--line);border-radius:var(--r-btn);
  padding:12px 14px;color:var(--ink-1);font-size:15px;
  transition:border-color .2s ease,box-shadow .2s ease;
}
.field textarea{min-height:104px;resize:vertical;line-height:1.75;}
.field input::placeholder,.field textarea::placeholder{color:var(--ink-3);}
.field input:focus,.field textarea:focus{
  outline:none;border-color:var(--brand);box-shadow:0 0 0 4px rgba(22,87,214,.12);
}
.form-hint{font-size:13px;color:var(--ink-3);line-height:1.7;}
.form-msg{
  display:none;margin-top:12px;
  font-size:14px;color:#0F8F79;
  background:rgba(18,198,166,.1);border:1px solid rgba(18,198,166,.28);
  border-radius:12px;padding:12px 14px;
}
.form-msg.show{display:block;}

/* ============ 页脚 ============ */
.site-footer{background:var(--dark);color:#A9B6C9;margin-top:0;padding:64px 0 30px;}
.voice-bar{
  display:flex;align-items:center;gap:12px;
  background:rgba(255,255,255,.06);
  border:1px solid rgba(255,255,255,.1);
  border-radius:14px;padding:14px 18px;
  font-size:14px;color:#C8D3E2;margin-bottom:44px;
}
.avatar{
  width:32px;height:32px;flex:none;border-radius:10px;
  display:grid;place-items:center;
  background:var(--brand);color:#fff;font-size:13px;font-weight:700;
}
.footer-top{display:grid;grid-template-columns:1.4fr 1fr 1fr 1.2fr;gap:36px;}
.footer-brand{display:flex;align-items:center;gap:10px;margin-bottom:16px;}
.footer-brand .brand-mark{box-shadow:none;}
.footer-brand b{color:#fff;font-size:15px;font-weight:700;}
.footer-brand span{display:block;font-size:9px;letter-spacing:1.6px;color:#67788F;font-weight:600;}
.footer-desc{font-size:14px;line-height:1.9;color:#8A9AB0;max-width:320px;}
.footer-col h4{color:#fff;font-size:14px;font-weight:700;margin-bottom:16px;letter-spacing:.4px;}
.footer-col a{
  display:block;font-size:14px;color:#A9B6C9;padding:6px 0;
  transition:color .2s ease,transform .2s ease;
}
.footer-col a:hover{color:var(--accent);transform:translateX(3px);}
.footer-contact li{font-size:14px;color:#A9B6C9;padding:6px 0;line-height:1.8;}
.footer-contact b{color:#fff;font-weight:600;}
.footer-bottom{
  margin-top:44px;padding-top:22px;
  border-top:1px solid rgba(255,255,255,.1);
  display:flex;flex-wrap:wrap;gap:12px;justify-content:space-between;
  font-size:13px;color:#67788F;
}
.footer-bottom a{color:#8A9AB0;}
.footer-bottom a:hover{color:var(--accent);}

/* ============ 浮动 CTA ============ */
.float-cta{
  position:fixed;right:24px;bottom:24px;z-index:70;
  display:flex;align-items:center;gap:10px;
  opacity:0;visibility:hidden;transform:translateY(14px);
  transition:opacity .25s ease,transform .25s ease,visibility .25s ease;
}
.float-cta.is-visible{opacity:1;visibility:visible;transform:none;}
.fab-chip{
  display:inline-flex;align-items:center;gap:9px;
  min-height:48px;padding:0 22px;border-radius:999px;
  background:var(--brand);color:#fff;font-size:15px;font-weight:600;
  box-shadow:0 12px 28px rgba(22,87,214,.3);
}
.fab-chip:hover{background:var(--brand-deep);color:#fff;}
.fab-dot{width:8px;height:8px;border-radius:50%;background:var(--accent-2);flex:none;}
.fab-sub{
  display:inline-flex;align-items:center;
  min-height:48px;padding:0 20px;border-radius:999px;
  background:#fff;color:var(--ink-1);font-size:14px;font-weight:600;
  border:1px solid var(--line);box-shadow:var(--sh-card);
}
.fab-sub:hover{color:var(--brand);border-color:#D6E2FB;}

/* ============ 响应式 ============ */
@media (max-width:1024px){
  .nav-links{display:none;}
  .nav-cta{display:none;}
  .burger{display:inline-flex;}
  .nav-panel.open .nav-links{
    display:grid;grid-template-columns:1fr 1fr;gap:8px;
    position:absolute;left:0;right:0;top:calc(100% + 10px);
    background:#fff;border:1px solid var(--line);border-radius:16px;
    padding:14px;box-shadow:var(--sh-hover);z-index:70;
  }
  .nav-panel.open .nav-item{width:100%;}
  .banner-inner{grid-template-columns:1fr;gap:32px;padding:44px 32px;}
  .page-title{font-size:34px;}
  .stats-grid{grid-template-columns:repeat(2,1fr);}
  .intro-card{grid-template-columns:1fr;gap:28px;padding:32px;}
  .timeline{grid-template-columns:repeat(2,1fr);}
  .cta-panel{grid-template-columns:1fr;gap:32px;padding:40px 32px;}
  .footer-top{grid-template-columns:1fr 1fr;gap:30px;}
}
@media (max-width:768px){
  body{font-size:15px;}
  .section{padding:48px 0;}
  .sec-title{font-size:23px;}
  .sec-sub{font-size:15px;}
  .banner-inner{padding:34px 22px;}
  .page-title{font-size:28px;}
  .lead{font-size:15px;}
  .hero-actions .btn{width:100%;}
  .stat-num{font-size:24px;}
  .spec-wrap{background:transparent;border:none;box-shadow:none;border-radius:0;}
  .spec-table,.spec-table tbody,.spec-table tr,.spec-table th,.spec-table td{display:block;width:100%;}
  .spec-table thead{display:none;}
  .spec-table tbody tr{
    background:#fff;border:1px solid var(--line);border-radius:14px;
    padding:16px;margin-bottom:14px;box-shadow:var(--sh-card);
  }
  .spec-table tbody th{
    border-bottom:1px dashed var(--line);padding:0 0 10px;margin-bottom:8px;
    font-size:16px;
  }
  .spec-table tbody td{
    border:none;padding:8px 0;
    display:flex;justify-content:space-between;gap:14px;font-size:14px;
  }
  .spec-table tbody td::before{
    content:attr(data-label);color:var(--ink-3);font-weight:600;flex:none;
  }
  .spec-table td.hl{background:transparent;}
  .spec-table td.hl::after{content:"推荐";font-size:11px;color:#0F8F79;}
  .timeline{grid-template-columns:1fr;}
  .faq-item summary{padding:16px 18px;font-size:15px;}
  .faq-answer{padding:14px 18px 18px;}
  .cta-panel{padding:32px 22px;border-radius:18px;}
  .form-card{padding:22px;}
  .footer-top{grid-template-columns:1fr;}
  .site-footer{padding:48px 0 96px;}
  .float-cta{
    left:0;right:0;bottom:0;
    padding:10px 14px calc(10px + env(safe-area-inset-bottom));
    background:#fff;border-top:1px solid var(--line);
    box-shadow:0 -8px 24px rgba(14,26,46,.08);
    gap:8px;
  }
  .float-cta.is-visible{transform:none;}
  .fab-chip{flex:1;justify-content:center;}
  .fab-sub{flex:none;}
}
@media (max-width:520px){
  .container{padding:0 16px;}
  .stats-grid{grid-template-columns:1fr;}
  .brand-text span{display:none;}
  .fab-sub{display:none;}
  .page-title{font-size:25px;}
}