/* roulang page: index */
:root{
  --bg:#05070F;
  --surface:#0B1220;
  --card:#111A2B;
  --brand:#19D3C5;
  --brand-2:#6A5AF9;
  --accent:#FFB020;
  --text:#E8EFFA;
  --body:#C3CFE2;
  --muted:#7C8CA6;
  --line:#E6EAF2;
  --light-text:#0B1220;
  --radius-card:18px;
  --radius-img:16px;
  --radius-input:12px;
  --gap-section:112px;
  --glow:0 0 0 1px rgba(25,211,197,.14), 0 20px 48px -20px rgba(0,0,0,.85);
  --glass:rgba(255,255,255,.055);
}
*{box-sizing:border-box}
html{scroll-behavior:smooth}
body{
  margin:0;
  background:var(--bg);
  color:var(--body);
  font-family:"PingFang SC","Microsoft YaHei","Noto Sans SC",system-ui,-apple-system,"Segoe UI",Roboto,sans-serif;
  font-size:17px;
  line-height:1.85;
  -webkit-font-smoothing:antialiased;
}
img{max-width:100%;display:block}
a{color:inherit;text-decoration:none;transition:color .2s ease}
a:hover{color:var(--brand)}
button,input,textarea,select{font-family:inherit;font-size:inherit;color:inherit}
ul{list-style:none;margin:0;padding:0}
h1,h2,h3,h4{margin:0;color:var(--text);font-weight:700;letter-spacing:0}
p{margin:0 0 1.2em}
p:last-child{margin-bottom:0}
:focus-visible{outline:2px solid var(--brand);outline-offset:3px;border-radius:6px}
.container{width:100%;max-width:1200px;margin:0 auto;padding:0 20px}
@media (min-width:992px){.container{padding:0 32px}}
.section{padding:var(--gap-section) 0}
.section-alt{background:var(--surface)}
.section-head{max-width:760px;margin-bottom:48px}
.eyebrow{
  display:inline-flex;align-items:center;gap:8px;
  font-size:13px;font-weight:600;line-height:1;letter-spacing:.02em;
  color:var(--brand);background:rgba(25,211,197,.1);
  border:1px solid rgba(25,211,197,.28);
  padding:8px 14px;border-radius:999px;margin-bottom:18px;
}
.eyebrow::before{content:"";width:6px;height:6px;border-radius:50%;background:var(--brand);box-shadow:0 0 10px var(--brand)}
h1{font-size:clamp(28px,4vw,46px);line-height:1.25;font-weight:800;color:var(--text)}
h2{font-size:clamp(22px,2.6vw,32px);line-height:1.35;font-weight:700}
h3{font-size:20px;line-height:1.4;font-weight:600}
.section-head p{color:var(--muted);margin-top:16px;font-size:16px}
.lead{color:var(--body);font-size:17px}

/* ---------- header ---------- */
.site-header{
  position:sticky;top:0;z-index:1030;
  background:#FFFFFF;
  border-bottom:1px solid var(--line);
  box-shadow:0 6px 24px -18px rgba(11,18,32,.5);
  transition:padding .25s ease, box-shadow .25s ease;
}
.nav-inner{
  display:flex;align-items:center;gap:24px;
  height:72px;transition:height .25s ease;
}
.site-header.shrink .nav-inner{height:60px}
.site-header.shrink{box-shadow:0 10px 30px -16px rgba(11,18,32,.55)}
.logo{display:flex;align-items:center;gap:10px;flex:0 0 auto;color:var(--light-text)}
.logo-mark{
  width:36px;height:36px;border-radius:12px;
  display:flex;align-items:center;justify-content:center;
  background:linear-gradient(135deg,#0B1220,#122036);
  box-shadow:0 0 0 1px rgba(25,211,197,.5), 0 0 16px rgba(25,211,197,.35) inset;
}
.logo-mark svg{width:20px;height:20px}
.logo-text{font-size:17px;font-weight:700;color:var(--light-text);letter-spacing:.01em;white-space:nowrap}
.nav-menu{display:flex;align-items:center;gap:4px;margin-left:8px}
.nav-menu a{
  display:block;padding:10px 14px;font-size:15px;font-weight:500;
  color:#3C4A60;border-radius:10px;position:relative;
}
.nav-menu a::after{
  content:"";position:absolute;left:14px;right:14px;bottom:2px;height:2px;
  background:var(--brand);border-radius:2px;transform:scaleX(0);transform-origin:left;
  transition:transform .22s ease;
}
.nav-menu a:hover{color:var(--light-text);background:#F5F7FB}
.nav-menu a:hover::after{transform:scaleX(1)}
.nav-menu a.active{color:var(--brand);font-weight:600}
.nav-menu a.active::after{transform:scaleX(1)}
.nav-tools{display:flex;align-items:center;gap:14px;margin-left:auto}
.search-box{
  display:flex;align-items:center;gap:8px;
  background:#F4F6FA;border:1px solid #E6EAF2;border-radius:999px;
  padding:8px 16px;min-width:220px;transition:border-color .2s ease, box-shadow .2s ease;
}
.search-box:focus-within{border-color:var(--brand);box-shadow:0 0 0 3px rgba(25,211,197,.18)}
.search-box svg{width:16px;height:16px;flex:0 0 auto;stroke:#8C9AB0}
.search-box input{
  border:0;background:transparent;outline:none;width:100%;
  font-size:14px;color:var(--light-text);
}
.search-box input::placeholder{color:#98A4B8}
.btn{
  display:inline-flex;align-items:center;justify-content:center;gap:8px;
  border:0;border-radius:999px;padding:13px 26px;
  font-size:15px;font-weight:600;line-height:1;cursor:pointer;
  transition:transform .18s ease, box-shadow .22s ease, filter .22s ease, background .22s ease;
}
.btn:active{transform:translateY(1px)}
.btn-primary{
  background:linear-gradient(135deg,var(--brand),var(--brand-2));
  color:#04131A;box-shadow:0 0 22px rgba(25,211,197,.35);
}
.btn-primary:hover{filter:brightness(1.08);box-shadow:0 0 30px rgba(25,211,197,.55);color:#04131A}
.btn-ghost{
  background:transparent;color:var(--text);
  border:1px solid rgba(232,239,250,.28);
  box-shadow:none;
}
.btn-ghost:hover{border-color:var(--brand);color:var(--brand);box-shadow:0 0 20px rgba(25,211,197,.25)}
.btn-light{background:#0B1220;color:#fff}
.btn-light:hover{background:#16203A;color:#fff}
.btn-sm{padding:10px 20px;font-size:14px}
.nav-toggle{
  display:none;width:44px;height:44px;border-radius:12px;border:1px solid var(--line);
  background:#fff;align-items:center;justify-content:center;
}
.nav-toggle span{display:block;width:18px;height:2px;background:#0B1220;position:relative}
.nav-toggle span::before,.nav-toggle span::after{
  content:"";position:absolute;left:0;width:18px;height:2px;background:#0B1220;
}
.nav-toggle span::before{top:-6px}
.nav-toggle span::after{top:6px}

/* ---------- hero ---------- */
.hero{position:relative;overflow:hidden;background:var(--bg);padding:88px 0 72px}
.hero-bg{
  position:absolute;inset:0;
  background:url('/assets/images/backpic/back-1.png') center/cover no-repeat;
  opacity:.5;
}
.hero::after{
  content:"";position:absolute;inset:0;
  background:
    radial-gradient(900px 480px at 12% 8%, rgba(25,211,197,.16), transparent 62%),
    radial-gradient(760px 420px at 88% 0%, rgba(106,90,249,.22), transparent 60%),
    linear-gradient(180deg, rgba(5,7,15,.72) 0%, rgba(5,7,15,.9) 62%, var(--bg) 100%);
}
.hero .container{position:relative;z-index:2}
.hero-grid{display:grid;grid-template-columns:5fr 7fr;gap:56px;align-items:center}
.hero h1{margin-bottom:18px}
.hero-sub{
  font-size:19px;line-height:1.6;color:var(--text);font-weight:500;margin-bottom:18px;
}
.hero-text p{color:var(--body);font-size:16.5px;max-width:560px}
.hero-actions{display:flex;flex-wrap:wrap;gap:14px;margin:30px 0 40px}
.hero-stats{
  display:grid;grid-template-columns:repeat(4,minmax(0,1fr));gap:20px;
  padding-top:26px;border-top:1px solid rgba(232,239,250,.12);
}
.hero-stat b{
  display:block;font-size:clamp(22px,2.4vw,30px);line-height:1.2;font-weight:800;
  color:var(--brand);font-variant-numeric:tabular-nums;
}
.hero-stat span{display:block;font-size:13.5px;color:var(--muted);margin-top:6px}
.hero-visual{position:relative}
.hero-visual img{
  width:100%;border-radius:var(--radius-img);
  box-shadow:var(--glow);
  aspect-ratio:16/10;object-fit:cover;
}
.hero-float{
  position:absolute;left:-18px;bottom:-22px;
  background:rgba(11,18,32,.92);border:1px solid rgba(25,211,197,.28);
  border-radius:var(--radius-card);padding:16px 20px;min-width:190px;
  box-shadow:0 24px 50px -24px rgba(0,0,0,.9);
  backdrop-filter:blur(10px);
}
.hero-float strong{display:block;color:var(--brand);font-size:22px;font-weight:800;line-height:1.2}
.hero-float span{font-size:13px;color:var(--muted)}

/* ---------- cards ---------- */
.card-glass{
  background:var(--glass);
  border:1px solid rgba(25,211,197,.12);
  border-top:1px solid rgba(255,255,255,.16);
  border-radius:var(--radius-card);
  backdrop-filter:blur(14px);
  padding:26px;
  box-shadow:var(--glow);
  transition:transform .22s ease-out, border-color .22s ease-out, box-shadow .22s ease-out;
  height:100%;
}
.card-glass:hover{transform:translateY(-4px);border-color:rgba(25,211,197,.42)}
.card-icon{
  width:46px;height:46px;border-radius:14px;display:flex;align-items:center;justify-content:center;
  background:rgba(25,211,197,.12);border:1px solid rgba(25,211,197,.3);margin-bottom:18px;
}
.card-icon svg{width:22px;height:22px;stroke:var(--brand)}
.card-glass h3{margin-bottom:10px}
.card-glass p{color:var(--muted);font-size:15.5px;line-height:1.8}

/* ---------- advantage asymmetric ---------- */
.adv-grid{display:grid;grid-template-columns:7fr 5fr;gap:24px;align-items:stretch}
.adv-main{
  background:var(--card);border:1px solid rgba(25,211,197,.14);border-radius:var(--radius-card);
  overflow:hidden;box-shadow:var(--glow);display:flex;flex-direction:column;
}
.adv-main img{width:100%;aspect-ratio:16/10;object-fit:cover;border-radius:0}
.adv-main-body{padding:28px}
.adv-main-body h3{font-size:23px;margin-bottom:12px}
.adv-main-body p{color:var(--body);font-size:16px}
.adv-side{display:grid;grid-template-rows:1fr 1fr;gap:24px}
.tag-row{display:flex;flex-wrap:wrap;gap:10px;margin-top:18px}
.tag{
  font-size:13px;font-weight:600;line-height:1;padding:8px 14px;border-radius:999px;
  background:rgba(106,90,249,.14);border:1px solid rgba(106,90,249,.34);color:#BDB6FF;
}
.tag-amber{background:rgba(255,176,32,.12);border-color:rgba(255,176,32,.4);color:var(--accent)}
.mini-grid{display:grid;grid-template-columns:repeat(3,minmax(0,1fr));gap:24px;margin-top:24px}
.mini-card{
  background:var(--card);border:1px solid rgba(232,239,250,.08);border-radius:var(--radius-card);
  padding:24px;transition:transform .22s ease-out, border-color .22s ease-out;
}
.mini-card:hover{transform:translateY(-4px);border-color:rgba(25,211,197,.36)}
.mini-card h4{color:var(--text);font-size:17px;font-weight:600;margin-bottom:8px}
.mini-card p{color:var(--muted);font-size:15px}

/* ---------- demo tabs ---------- */
.demo-tabs{display:flex;flex-wrap:wrap;gap:12px;margin-bottom:36px}
.demo-tab{
  border:1px solid rgba(232,239,250,.16);background:transparent;color:var(--body);
  border-radius:999px;padding:11px 22px;font-size:15px;font-weight:600;cursor:pointer;
  transition:all .22s ease;
}
.demo-tab:hover{border-color:rgba(25,211,197,.5);color:var(--text)}
.demo-tab.active{
  background:linear-gradient(135deg,var(--brand),var(--brand-2));
  color:#04131A;border-color:transparent;box-shadow:0 0 22px rgba(25,211,197,.4);
}
.demo-panel{display:none}
.demo-panel.active{display:block}
.demo-inner{
  display:grid;grid-template-columns:7fr 5fr;gap:32px;align-items:center;
  background:var(--card);border:1px solid rgba(25,211,197,.14);
  border-radius:var(--radius-card);padding:28px;box-shadow:var(--glow);
}
.demo-inner img{width:100%;aspect-ratio:16/10;object-fit:cover;border-radius:var(--radius-img)}
.demo-list li{
  display:flex;gap:12px;align-items:flex-start;padding:14px 0;
  border-bottom:1px dashed rgba(232,239,250,.12);color:var(--body);font-size:16px;
}
.demo-list li:last-child{border-bottom:0}
.demo-list li::before{
  content:"";flex:0 0 auto;width:8px;height:8px;border-radius:2px;background:var(--brand);
  margin-top:9px;box-shadow:0 0 10px rgba(25,211,197,.7);
}

/* ---------- proof ---------- */
.metric-grid{display:grid;grid-template-columns:repeat(4,minmax(0,1fr));gap:24px;margin-bottom:44px}
.metric{
  background:var(--card);border-radius:var(--radius-card);padding:26px;
  border:1px solid rgba(232,239,250,.08);text-align:left;
}
.metric b{display:block;font-size:34px;font-weight:800;line-height:1.15;color:var(--brand);font-variant-numeric:tabular-nums}
.metric span{display:block;color:var(--muted);font-size:14px;margin-top:8px}
.trust-wall{
  display:grid;grid-template-columns:repeat(6,minmax(0,1fr));gap:16px;margin-bottom:44px;
}
.trust-item{
  height:48px;border-radius:12px;display:flex;align-items:center;justify-content:center;
  background:rgba(255,255,255,.04);border:1px solid rgba(232,239,250,.1);
  color:var(--muted);font-size:13px;letter-spacing:.02em;
}
.quote-grid{display:grid;grid-template-columns:repeat(2,minmax(0,1fr));gap:24px}
.quote-card{
  background:var(--card);border-left:3px solid var(--brand);border-radius:var(--radius-card);
  padding:26px;box-shadow:var(--glow);
}
.quote-card p{color:var(--body);font-size:16px}
.quote-card footer{margin-top:16px;color:var(--muted);font-size:13.5px}

/* ---------- pricing ---------- */
.price-grid{display:grid;grid-template-columns:repeat(3,minmax(0,1fr));gap:24px;align-items:stretch}
.price-card{
  position:relative;background:var(--card);border:1px solid rgba(232,239,250,.1);
  border-radius:var(--radius-card);padding:32px 28px;display:flex;flex-direction:column;
  transition:transform .22s ease-out, border-color .22s ease-out;
}
.price-card:hover{transform:translateY(-4px);border-color:rgba(25,211,197,.36)}
.price-card.featured{
  border-color:rgba(25,211,197,.55);
  box-shadow:0 0 0 1px rgba(25,211,197,.35), 0 28px 60px -28px rgba(25,211,197,.45);
  background:linear-gradient(180deg, rgba(25,211,197,.07), rgba(17,26,43,1) 42%);
}
.price-badge{
  position:absolute;top:-13px;left:28px;
  background:var(--accent);color:#231703;font-size:12.5px;font-weight:700;line-height:1;
  padding:8px 14px;border-radius:999px;
}
.price-card h3{font-size:19px;margin-bottom:6px}
.price-card .price-desc{color:var(--muted);font-size:14.5px;min-height:44px}
.price-value{display:flex;align-items:baseline;gap:6px;margin:18px 0 22px}
.price-value b{font-size:36px;font-weight:800;color:var(--text);line-height:1.1}
.price-value span{color:var(--muted);font-size:14px}
.price-features{flex:1 1 auto;margin-bottom:24px}
.price-features li{
  display:flex;gap:10px;align-items:flex-start;padding:9px 0;font-size:15.5px;color:var(--body);
}
.price-features li::before{
  content:"✓";color:var(--brand);font-weight:700;flex:0 0 auto;
}
.price-features li.off{color:#6B7A92}
.price-features li.off::before{content:"–";color:#6B7A92}
.price-note{color:var(--muted);font-size:13.5px;margin-top:22px;text-align:center}

/* ---------- news ---------- */
.news-head{display:flex;align-items:flex-end;justify-content:space-between;gap:24px;margin-bottom:36px}
.news-head .more{font-size:15px;font-weight:600;color:var(--brand);white-space:nowrap}
.news-grid{display:grid;grid-template-columns:repeat(3,minmax(0,1fr));gap:24px}
.news-card{
  background:var(--card);border-radius:var(--radius-card);overflow:hidden;
  border:1px solid rgba(232,239,250,.08);border-left:3px solid var(--brand);
  transition:transform .22s ease-out, border-color .22s ease-out, box-shadow .22s ease-out;
  display:flex;flex-direction:column;
}
.news-card:hover{transform:translateY(-4px);border-color:rgba(25,211,197,.4);box-shadow:var(--glow)}
.news-card a{display:flex;flex-direction:column;height:100%;padding:24px}
.news-badge{
  align-self:flex-start;font-size:12.5px;font-weight:600;line-height:1;
  padding:7px 12px;border-radius:999px;margin-bottom:14px;
  background:rgba(25,211,197,.12);border:1px solid rgba(25,211,197,.3);color:var(--brand);
}
.news-title{
  font-size:17.5px;line-height:1.55;color:var(--text);margin-bottom:10px;
  display:-webkit-box;-webkit-line-clamp:2;-webkit-box-orient:vertical;overflow:hidden;
}
.news-summary{
  color:var(--muted);font-size:15px;line-height:1.75;margin:0 0 18px;
  display:-webkit-box;-webkit-line-clamp:3;-webkit-box-orient:vertical;overflow:hidden;
}
.news-foot{
  margin-top:auto;display:flex;align-items:center;justify-content:space-between;
  padding-top:14px;border-top:1px dashed rgba(232,239,250,.12);
  color:var(--muted);font-size:13.5px;
}
.news-foot .arrow{color:var(--brand);transition:transform .22s ease-out}
.news-card:hover .news-foot .arrow{transform:translateX(4px)}
.news-empty{
  grid-column:1/-1;border:1px dashed rgba(25,211,197,.4);border-radius:var(--radius-card);
  background:var(--glass);padding:56px 28px;text-align:center;backdrop-filter:blur(10px);
}
.news-empty p{color:var(--muted);margin-bottom:18px}

/* ---------- FAQ ---------- */
.faq-list{max-width:900px;margin:0 auto}
.faq-item{
  background:var(--card);border:1px solid rgba(232,239,250,.08);border-radius:var(--radius-card);
  margin-bottom:14px;overflow:hidden;transition:border-color .22s ease;
}
.faq-item:hover{border-color:rgba(25,211,197,.32)}
.faq-q{
  width:100%;background:transparent;border:0;text-align:left;cursor:pointer;
  padding:22px 56px 22px 24px;position:relative;
  color:var(--text);font-size:17px;font-weight:600;line-height:1.5;
}
.faq-q::after{
  content:"";position:absolute;right:24px;top:50%;width:10px;height:10px;
  border-right:2px solid var(--muted);border-bottom:2px solid var(--muted);
  transform:translateY(-70%) rotate(45deg);transition:transform .25s ease, border-color .25s ease;
}
.faq-item.open{border-color:rgba(25,211,197,.5);box-shadow:var(--glow)}
.faq-item.open .faq-q{color:var(--brand)}
.faq-item.open .faq-q::after{border-color:var(--brand);transform:translateY(-30%) rotate(-135deg)}
.faq-a{max-height:0;overflow:hidden;transition:max-height .3s ease}
.faq-a-inner{
  padding:0 24px 24px 24px;border-left:2px solid var(--brand);margin-left:24px;
  color:var(--body);font-size:15.5px;
}

/* ---------- contact / cta band ---------- */
.cta-band{
  position:relative;overflow:hidden;border-radius:26px;
  background:linear-gradient(135deg, rgba(25,211,197,.14), rgba(106,90,249,.2) 55%, rgba(11,18,32,.98));
  border:1px solid rgba(25,211,197,.28);
  padding:52px 44px;box-shadow:0 40px 80px -40px rgba(25,211,197,.5);
}
.cta-band::before{
  content:"";position:absolute;width:520px;height:520px;border-radius:50%;
  right:-180px;top:-220px;background:radial-gradient(circle, rgba(25,211,197,.4), transparent 65%);
}
.cta-inner{position:relative;z-index:2;display:grid;grid-template-columns:6fr 6fr;gap:44px}
.cta-copy h2{margin-bottom:14px}
.cta-copy p{color:var(--body);font-size:16.5px}
.cta-points{margin-top:22px}
.cta-points li{display:flex;gap:10px;align-items:flex-start;color:var(--text);font-size:15.5px;padding:7px 0}
.cta-points li::before{content:"";width:8px;height:8px;border-radius:2px;background:var(--brand);margin-top:9px;flex:0 0 auto}
.form-card{
  background:rgba(5,7,15,.62);border:1px solid rgba(232,239,250,.14);
  border-radius:var(--radius-card);padding:28px;backdrop-filter:blur(12px);
}
.form-row{display:grid;grid-template-columns:1fr 1fr;gap:16px}
.field{margin-bottom:16px}
.field label{display:block;font-size:13.5px;color:var(--muted);margin-bottom:8px}
.field input,.field textarea{
  width:100%;background:rgba(255,255,255,.04);border:1px solid rgba(232,239,250,.18);
  border-radius:var(--radius-input);padding:13px 15px;font-size:15px;color:var(--text);
  outline:none;transition:border-color .2s ease, box-shadow .2s ease;
}
.field input::placeholder,.field textarea::placeholder{color:#6B7A92}
.field input:focus,.field textarea:focus{border-color:var(--brand);box-shadow:0 0 0 2px rgba(25,211,197,.28)}
.field textarea{min-height:104px;resize:vertical}
.form-hint{font-size:13px;color:var(--muted);margin-top:12px}
.form-warn{color:var(--accent);font-size:13px;margin-top:10px;display:none}
.form-warn.show{display:block}

/* ---------- footer ---------- */
.site-footer{background:#03050B;border-top:1px solid rgba(232,239,250,.08);padding:72px 0 0;margin-top:96px}
.footer-grid{display:grid;grid-template-columns:4fr 2.6fr 2.6fr 2.8fr;gap:40px;padding-bottom:48px}
.footer-brand{display:flex;align-items:center;gap:10px;margin-bottom:16px}
.footer-brand .logo-mark{width:34px;height:34px;border-radius:11px}
.footer-brand span{font-size:17px;font-weight:700;color:var(--text)}
.footer-col p{color:var(--muted);font-size:14.5px;line-height:1.85}
.footer-col h4{font-size:15px;color:var(--text);margin-bottom:18px;font-weight:600}
.footer-col li{margin-bottom:12px}
.footer-col li a{color:var(--muted);font-size:14.5px}
.footer-col li a:hover{color:var(--brand)}
.footer-bottom{
  border-top:1px solid rgba(232,239,250,.08);padding:24px 0;
  display:flex;flex-wrap:wrap;gap:12px;justify-content:space-between;
  color:#5C6A80;font-size:13px;
}
.footer-bottom .disclaimer{color:#4E5A70}

/* ---------- floating cta ---------- */
.float-cta{
  position:fixed;right:28px;bottom:28px;z-index:1040;
  display:flex;flex-direction:column;gap:12px;align-items:flex-end;
  opacity:0;visibility:hidden;transform:translateY(12px);
  transition:opacity .3s ease, transform .3s ease, visibility .3s;
}
.float-cta.show{opacity:1;visibility:visible;transform:translateY(0)}
.back-top{
  width:46px;height:46px;border-radius:50%;border:1px solid rgba(25,211,197,.35);
  background:rgba(11,18,32,.9);color:var(--brand);cursor:pointer;
  display:flex;align-items:center;justify-content:center;font-size:18px;
  box-shadow:0 0 0 1px rgba(25,211,197,.12), 0 18px 40px -20px rgba(0,0,0,.9);
}
.back-top:hover{background:rgba(25,211,197,.16)}
.float-bar{display:none}

/* ---------- responsive ---------- */
@media (max-width:1199px){
  :root{--gap-section:88px}
  .hero-grid{grid-template-columns:1fr;gap:40px}
  .hero-text p{max-width:none}
  .adv-grid{grid-template-columns:1fr}
  .adv-side{grid-template-rows:auto auto;grid-template-columns:repeat(2,minmax(0,1fr))}
  .demo-inner{grid-template-columns:1fr}
  .cta-inner{grid-template-columns:1fr}
  .footer-grid{grid-template-columns:repeat(2,minmax(0,1fr))}
}
@media (max-width:991px){
  :root{--gap-section:72px}
  .nav-menu{
    position:absolute;top:72px;left:0;right:0;background:#fff;
    flex-direction:column;align-items:stretch;gap:0;padding:12px 20px 20px;
    border-bottom:1px solid var(--line);box-shadow:0 18px 30px -22px rgba(11,18,32,.6);
    display:none;
  }
  .nav-menu.open{display:flex}
  .nav-menu a{padding:14px 8px;border-radius:12px;font-size:16px}
  .nav-menu a::after{display:none}
  .nav-menu a.active{background:#F2FBF9}
  .nav-toggle{display:flex;margin-left:auto}
  .nav-tools{display:none}
  .price-grid,.news-grid,.mini-grid,.metric-grid{grid-template-columns:repeat(2,minmax(0,1fr))}
  .trust-wall{grid-template-columns:repeat(3,minmax(0,1fr))}
  .quote-grid{grid-template-columns:1fr}
  .hero-stats{grid-template-columns:repeat(2,minmax(0,1fr));gap:16px}
}
@media (max-width:575px){
  :root{--gap-section:56px}
  body{font-size:15.5px}
  .hero{padding:56px 0 48px}
  .hero-float{left:12px;bottom:-16px;padding:12px 16px;min-width:150px}
  .adv-side{grid-template-columns:1fr}
  .price-grid,.news-grid,.mini-grid,.metric-grid,.trust-wall{grid-template-columns:1fr}
  .card-glass,.mini-card,.price-card{padding:20px}
  .cta-band{padding:32px 20px;border-radius:20px}
  .form-row{grid-template-columns:1fr}
  .card-glass{backdrop-filter:none;background:rgba(255,255,255,.06)}
  .news-empty{backdrop-filter:none}
  .float-cta{right:16px;bottom:84px}
  .float-cta .btn{display:none}
  .float-bar{
    display:flex;position:fixed;left:0;right:0;bottom:0;z-index:1040;
    height:60px;padding:8px 12px;gap:10px;
    background:rgba(5,7,15,.96);border-top:1px solid rgba(25,211,197,.24);
  }
  .float-bar .btn{flex:1 1 0;padding:12px 10px;font-size:14.5px}
  .float-bar .btn-ghost{flex:0 0 42%}
  body{padding-bottom:60px}
  .footer-grid{grid-template-columns:1fr;gap:32px}
}
@media (prefers-reduced-motion:reduce){
  html{scroll-behavior:auto}
  *{transition:none !important;animation:none !important}
}

/* roulang page: article */
:root{
  --bg:#05070F;
  --bg-soft:#0B1220;
  --card:#111A2B;
  --card-2:#0E1626;
  --primary:#19D3C5;
  --primary-dark:#12A79C;
  --accent:#6A5AF9;
  --amber:#FFB020;
  --text:#E8EFFA;
  --body:#C3CFE2;
  --muted:#7C8CA6;
  --line:rgba(255,255,255,.08);
  --line-strong:rgba(25,211,197,.24);
  --glass:rgba(255,255,255,.055);
  --header-text:#0B1220;
  --header-line:#E6EAF2;
  --radius-card:18px;
  --radius-img:16px;
  --radius-input:12px;
  --radius-pill:999px;
  --shadow-card:0 0 0 1px rgba(25,211,197,.14), 0 20px 48px -20px rgba(0,0,0,.85);
  --shadow-soft:0 12px 32px -18px rgba(0,0,0,.75);
  --container:1200px;
  --header-h:72px;
  --font-cn:"PingFang SC","Microsoft YaHei","Noto Sans SC",system-ui,-apple-system,"Segoe UI",Roboto,Arial,sans-serif;
  --font-num:"Inter","Barlow","Helvetica Neue",Arial,sans-serif;
}
*,*::before,*::after{box-sizing:border-box}
html{-webkit-text-size-adjust:100%;scroll-behavior:smooth}
body{
  margin:0;
  background:var(--bg);
  color:var(--body);
  font-family:var(--font-cn);
  font-size:17px;
  line-height:1.85;
  letter-spacing:0;
  -webkit-font-smoothing:antialiased;
  overflow-x:hidden;
}
img{max-width:100%;height:auto;display:block}
a{color:var(--primary);text-decoration:none;transition:color .2s ease,opacity .2s ease}
a:hover{color:#4ee6da}
button{font-family:inherit}
h1,h2,h3,h4,h5{margin:0;color:var(--text);font-weight:700;letter-spacing:0}
p{margin:0 0 1.2em}
ul,ol{margin:0 0 1.2em;padding-left:1.3em}
:focus-visible{outline:2px solid var(--primary);outline-offset:3px;border-radius:6px}
.container{width:100%;max-width:var(--container);margin:0 auto;padding:0 20px}
@media (min-width:992px){.container{padding:0 32px}}

/* ============ 顶栏 ============ */
.site-header{
  position:sticky;top:0;z-index:1050;
  background:#fff;
  border-bottom:1px solid var(--header-line);
  box-shadow:0 6px 18px -14px rgba(11,18,32,.5);
  transition:box-shadow .25s ease,height .25s ease;
}
.site-header.is-scrolled{box-shadow:0 10px 26px -16px rgba(11,18,32,.62)}
.nav-inner{
  display:flex;align-items:center;gap:22px;
  height:var(--header-h);
  transition:height .25s ease;
}
.site-header.is-scrolled .nav-inner{height:60px}
.logo{display:flex;align-items:center;gap:10px;flex:0 0 auto;color:var(--header-text)}
.logo:hover{color:var(--header-text)}
.logo-mark{width:32px;height:32px;display:grid;place-items:center;border-radius:10px;background:#F3FBFB;box-shadow:inset 0 0 0 1px rgba(25,211,197,.28)}
.logo-mark svg{width:20px;height:20px}
.logo-text{font-size:19px;font-weight:800;letter-spacing:-.2px;white-space:nowrap}
.nav-menu{display:flex;align-items:center;gap:4px;margin-left:8px;flex:1 1 auto;min-width:0}
.nav-menu a{
  position:relative;
  display:inline-flex;align-items:center;height:var(--header-h);
  padding:0 14px;
  color:#41506B;font-size:15.5px;font-weight:600;white-space:nowrap;
  transition:color .2s ease,height .25s ease;
}
.site-header.is-scrolled .nav-menu a{height:60px}
.nav-menu a::after{
  content:"";position:absolute;left:14px;right:14px;bottom:14px;height:2px;border-radius:2px;
  background:var(--primary);transform:scaleX(0);transform-origin:left;transition:transform .22s ease;
}
.nav-menu a:hover{color:var(--header-text)}
.nav-menu a:hover::after{transform:scaleX(1)}
.nav-menu a.active{color:var(--primary-dark)}
.nav-menu a.active::after{transform:scaleX(1)}
.nav-tools{display:flex;align-items:center;gap:12px;flex:0 0 auto;margin-left:auto}
.search-box{
  display:flex;align-items:center;gap:8px;
  background:#F4F6FA;border:1px solid transparent;border-radius:var(--radius-pill);
  padding:0 14px;height:42px;width:230px;
  transition:border-color .2s ease,background .2s ease,box-shadow .2s ease;
}
.search-box svg{width:16px;height:16px;stroke:#8A97AC;flex:0 0 auto;fill:none}
.search-box input{
  border:0;background:transparent;outline:none;width:100%;
  font-size:14.5px;color:var(--header-text);
}
.search-box input::placeholder{color:#98A4B8}
.search-box:focus-within{background:#fff;border-color:var(--primary);box-shadow:0 0 0 3px rgba(25,211,197,.16)}
.nav-toggle{
  display:none;width:44px;height:44px;border:1px solid var(--header-line);border-radius:12px;
  background:#fff;position:relative;flex:0 0 auto;
}
.nav-toggle span,
.nav-toggle span::before,
.nav-toggle span::after{
  position:absolute;left:50%;width:18px;height:2px;background:#0B1220;border-radius:2px;
  transform:translateX(-50%);transition:transform .2s ease,opacity .2s ease;
}
.nav-toggle span{top:50%;margin-top:-1px}
.nav-toggle span::before{content:"";top:-6px;left:0;transform:none}
.nav-toggle span::after{content:"";top:6px;left:0;transform:none}
.nav-toggle[aria-expanded="true"] span{background:transparent}
.nav-toggle[aria-expanded="true"] span::before{transform:translateY(6px) rotate(45deg)}
.nav-toggle[aria-expanded="true"] span::after{transform:translateY(-6px) rotate(-45deg)}

/* ============ 按钮 ============ */
.btn{
  display:inline-flex;align-items:center;justify-content:center;gap:8px;
  border-radius:var(--radius-pill);border:1px solid transparent;
  font-weight:700;font-size:15px;line-height:1;
  padding:13px 26px;cursor:pointer;white-space:nowrap;
  transition:transform .2s ease,box-shadow .2s ease,background .2s ease,color .2s ease,border-color .2s ease,filter .2s ease;
}
.btn:active{transform:translateY(1px)}
.btn-primary{
  background:linear-gradient(135deg,var(--primary) 0%,var(--accent) 100%);
  color:#04121A;
  box-shadow:0 0 22px rgba(25,211,197,.35);
}
.btn-primary:hover{filter:brightness(1.08);color:#04121A;box-shadow:0 0 30px rgba(25,211,197,.5)}
.btn-ghost{
  background:rgba(255,255,255,.06);
  border-color:rgba(255,255,255,.22);
  color:var(--text);
  backdrop-filter:blur(10px);
}
.btn-ghost:hover{border-color:var(--primary);color:var(--primary);background:rgba(25,211,197,.08)}
.btn-light{
  background:#0B1220;color:#fff;box-shadow:0 10px 22px -14px rgba(11,18,32,.7);
}
.btn-light:hover{background:#16233a;color:#fff}
.btn-sm{padding:11px 20px;font-size:14.5px}

/* ============ 徽章 / 标签 ============ */
.badge-pill{
  display:inline-flex;align-items:center;gap:6px;
  padding:7px 14px;border-radius:var(--radius-pill);
  font-size:13px;font-weight:600;line-height:1;
  background:rgba(25,211,197,.12);color:var(--primary);
  border:1px solid rgba(25,211,197,.28);
}
.badge-purple{background:rgba(106,90,249,.14);color:#A99CFF;border-color:rgba(106,90,249,.32)}
.badge-amber{background:rgba(255,176,32,.14);color:var(--amber);border-color:rgba(255,176,32,.32)}

/* ============ 文章页头 ============ */
.article-hero{
  position:relative;
  padding:56px 0 44px;
  background-image:linear-gradient(180deg,rgba(5,7,15,.86) 0%,rgba(5,7,15,.94) 62%,var(--bg) 100%),url(/assets/images/backpic/back-1.png);
  background-size:cover;background-position:center;
  border-bottom:1px solid var(--line);
  overflow:hidden;
}
.article-hero::after{
  content:"";position:absolute;right:-120px;top:-120px;width:420px;height:420px;border-radius:50%;
  background:radial-gradient(circle,rgba(106,90,249,.35),transparent 68%);pointer-events:none;
}
.crumbs{
  display:flex;flex-wrap:wrap;align-items:center;gap:8px;
  font-size:14px;color:var(--muted);margin-bottom:22px;position:relative;z-index:2;
}
.crumbs a{color:var(--muted)}
.crumbs a:hover{color:var(--primary)}
.crumbs .sep{opacity:.6}
.crumbs .current{color:var(--body);max-width:100%;overflow:hidden;text-overflow:ellipsis;white-space:nowrap}
.article-hero h1{
  position:relative;z-index:2;
  font-size:clamp(28px,4vw,46px);line-height:1.25;font-weight:800;
  margin:0 0 22px;max-width:960px;
}
.article-meta{
  position:relative;z-index:2;
  display:flex;flex-wrap:wrap;align-items:center;gap:12px 22px;
  font-size:14.5px;color:var(--muted);
}
.article-meta .meta-item{display:inline-flex;align-items:center;gap:8px}
.article-meta i{color:var(--primary)}

/* ============ 正文 ============ */
.article-main{padding:64px 0 24px}
.article-wrap{max-width:820px;margin:0 auto}
.article-body{
  font-size:17px;line-height:1.9;color:var(--body);
  word-break:break-word;
}
.article-body > *:first-child{margin-top:0}
.article-body h2{
  font-size:clamp(22px,2.6vw,32px);line-height:1.35;font-weight:700;
  color:var(--text);margin:44px 0 16px;padding-left:14px;position:relative;
}
.article-body h2::before{
  content:"";position:absolute;left:0;top:.18em;bottom:.18em;width:3px;border-radius:3px;
  background:linear-gradient(180deg,var(--primary),var(--accent));
}
.article-body h3{font-size:20px;line-height:1.4;font-weight:600;color:var(--text);margin:32px 0 12px}
.article-body h4{font-size:17.5px;font-weight:600;color:var(--text);margin:24px 0 10px}
.article-body p{margin:0 0 1.2em}
.article-body a{color:var(--primary);border-bottom:1px solid rgba(25,211,197,.35)}
.article-body a:hover{border-bottom-color:var(--primary)}
.article-body strong{color:var(--text)}
.article-body ul,.article-body ol{margin:0 0 1.2em;padding-left:1.2em}
.article-body ul{list-style:none;padding-left:0}
.article-body ul li{position:relative;padding-left:22px;margin-bottom:10px}
.article-body ul li::before{
  content:"";position:absolute;left:2px;top:.72em;width:8px;height:8px;border-radius:2px;
  background:var(--primary);box-shadow:0 0 10px rgba(25,211,197,.5);
}
.article-body ol li{margin-bottom:10px}
.article-body blockquote{
  margin:24px 0;padding:18px 22px;
  border-left:3px solid var(--primary);
  background:rgba(25,211,197,.06);
  border-radius:0 14px 14px 0;
  color:var(--text);
}
.article-body blockquote p:last-child{margin-bottom:0}
.article-body img{
  border-radius:var(--radius-img);margin:26px auto;
  box-shadow:var(--shadow-soft);
}
.article-body figure{margin:26px 0}
.article-body figcaption{text-align:center;font-size:13px;color:var(--muted);margin-top:10px}
.article-body table{
  display:block;width:100%;overflow-x:auto;
  border-collapse:collapse;margin:26px 0;font-size:15.5px;
  border-radius:var(--radius-input);border:1px solid var(--line);
}
.article-body thead{background:rgba(25,211,197,.08)}
.article-body th,.article-body td{
  padding:12px 16px;text-align:left;border-bottom:1px solid var(--line);white-space:nowrap;
}
.article-body th{color:var(--text);font-weight:600}
.article-body tbody tr:nth-child(even){background:rgba(255,255,255,.025)}
.article-body pre{
  background:var(--card-2);border:1px solid var(--line);
  border-radius:var(--radius-input);padding:16px 18px;overflow-x:auto;
  font-size:14.5px;color:#B8D9D6;
}
.article-body code{
  background:rgba(25,211,197,.1);color:var(--primary);
  padding:2px 7px;border-radius:6px;font-size:14.5px;
}
.article-body hr{border:0;border-top:1px solid var(--line);margin:34px 0}

.article-empty{
  background:var(--glass);border:1px dashed var(--line-strong);
  border-radius:var(--radius-card);padding:54px 28px;text-align:center;
}
.article-empty i{font-size:34px;color:var(--primary);margin-bottom:16px}
.article-empty h2{font-size:22px;margin-bottom:12px}
.article-empty p{color:var(--muted);margin-bottom:22px}

/* ============ 标签 ============ */
.tag-row{
  display:flex;flex-wrap:wrap;align-items:center;gap:10px;
  margin:44px 0 0;padding-top:26px;border-top:1px solid var(--line);
}
.tag-row .tag-label{font-size:14px;color:var(--muted);margin-right:2px}
.tag{
  display:inline-flex;align-items:center;
  padding:8px 16px;border-radius:var(--radius-pill);
  font-size:14px;color:var(--body);
  background:rgba(255,255,255,.05);
  border:1px solid var(--line);
  transition:border-color .2s ease,color .2s ease,transform .2s ease,background .2s ease;
}
.tag:hover{border-color:var(--primary);color:var(--primary);background:rgba(25,211,197,.08);transform:translateY(-2px)}

/* ============ 板块通用 ============ */
.section{padding:88px 0}
.section-alt{background:var(--bg-soft)}
.section-head{margin-bottom:44px;max-width:720px}
.section-head .eyebrow{
  display:inline-flex;align-items:center;gap:8px;
  font-size:13px;font-weight:600;letter-spacing:.4px;color:var(--primary);
  padding:6px 14px;border-radius:var(--radius-pill);
  background:rgba(25,211,197,.1);border:1px solid rgba(25,211,197,.24);
  margin-bottom:16px;
}
.section-head h2{font-size:clamp(22px,2.6vw,32px);line-height:1.35;margin-bottom:14px}
.section-head p{color:var(--muted);font-size:16px;margin:0}

/* ============ 卡片网格 ============ */
.card-grid{display:grid;gap:22px;grid-template-columns:repeat(3,1fr)}
.post-card{
  display:flex;flex-direction:column;
  background:var(--card);border-radius:var(--radius-card);
  box-shadow:var(--shadow-card);overflow:hidden;
  border-left:3px solid var(--primary);
  transition:transform .22s ease-out,border-color .22s ease-out,box-shadow .22s ease-out;
}
.post-card:hover{transform:translateY(-4px);box-shadow:0 0 0 1px rgba(25,211,197,.3),0 26px 52px -22px rgba(0,0,0,.9)}
.post-thumb{position:relative;aspect-ratio:16/10;overflow:hidden;background:var(--card-2)}
.post-thumb img{width:100%;height:100%;object-fit:cover;transition:transform .35s ease-out}
.post-card:hover .post-thumb img{transform:scale(1.04)}
.post-body{padding:24px;display:flex;flex-direction:column;flex:1 1 auto}
.post-body h3{font-size:18.5px;line-height:1.45;margin:14px 0 10px;font-weight:700}
.post-body h3 a{color:var(--text)}
.post-body h3 a:hover{color:var(--primary)}
.post-body p{font-size:15px;color:var(--muted);margin:0 0 18px}
.post-foot{
  margin-top:auto;display:flex;align-items:center;justify-content:space-between;gap:12px;
  font-size:13.5px;color:var(--muted);
}
.post-foot .arrow{color:var(--primary);transition:transform .22s ease-out}
.post-card:hover .post-foot .arrow{transform:translateX(4px)}

/* ============ CTA 带 ============ */
.cta-band{
  position:relative;overflow:hidden;
  background:linear-gradient(120deg,#071021 0%,#0B1220 55%,#101A34 100%);
  border-top:1px solid var(--line);border-bottom:1px solid var(--line);
  padding:72px 0;
}
.cta-band::before{
  content:"";position:absolute;left:-140px;bottom:-180px;width:520px;height:520px;border-radius:50%;
  background:radial-gradient(circle,rgba(25,211,197,.28),transparent 66%);
}
.cta-band::after{
  content:"";position:absolute;right:-100px;top:-160px;width:420px;height:420px;border-radius:50%;
  background:radial-gradient(circle,rgba(106,90,249,.3),transparent 68%);
}
.cta-inner{position:relative;z-index:2;display:flex;flex-wrap:wrap;align-items:center;justify-content:space-between;gap:28px}
.cta-text{max-width:620px}
.cta-text h2{font-size:clamp(22px,2.6vw,32px);line-height:1.35;margin-bottom:12px}
.cta-text p{color:var(--body);margin:0;font-size:16px}
.cta-actions{display:flex;flex-wrap:wrap;gap:14px}

/* ============ 表单 ============ */
.contact-section{padding:80px 0 88px}
.form-card{
  background:var(--card);border-radius:var(--radius-card);
  box-shadow:var(--shadow-card);padding:32px;
}
.form-grid{display:grid;grid-template-columns:1fr 1fr;gap:20px}
.form-field{display:flex;flex-direction:column;gap:8px}
.form-field.full{grid-column:1 / -1}
.form-field label{font-size:14.5px;font-weight:600;color:var(--text)}
.form-field input,
.form-field textarea{
  background:#0B1220;border:1px solid var(--line);
  border-radius:var(--radius-input);padding:14px 16px;
  color:var(--text);font-size:15.5px;font-family:inherit;outline:none;
  transition:border-color .2s ease,box-shadow .2s ease;
}
.form-field input::placeholder,
.form-field textarea::placeholder{color:#5D6B84}
.form-field input:focus,
.form-field textarea:focus{border-color:var(--primary);box-shadow:0 0 0 3px rgba(25,211,197,.16)}
.form-tip{font-size:13px;color:var(--muted);margin:16px 0 0}

/* ============ 页脚 ============ */
.site-footer{background:#04060D;border-top:1px solid var(--line);padding-top:64px}
.footer-grid{display:grid;grid-template-columns:1.5fr 1fr 1fr 1.2fr;gap:36px;padding-bottom:48px}
.footer-brand .logo-text{color:var(--text)}
.footer-brand p{color:var(--muted);font-size:14.5px;margin:16px 0 0;max-width:320px}
.footer-col h3{font-size:15.5px;color:var(--text);margin-bottom:18px;font-weight:700}
.footer-col ul{list-style:none;margin:0;padding:0}
.footer-col li{margin-bottom:12px}
.footer-col a{color:var(--muted);font-size:14.5px}
.footer-col a:hover{color:var(--primary)}
.footer-contact li{display:flex;align-items:flex-start;gap:10px;color:var(--muted);font-size:14.5px;margin-bottom:12px}
.footer-contact i{color:var(--primary);margin-top:5px}
.footer-bottom{
  border-top:1px solid var(--line);padding:22px 0 28px;
  display:flex;flex-wrap:wrap;gap:12px;justify-content:space-between;align-items:center;
  font-size:13.5px;color:#5D6B84;
}
.footer-bottom .legal{max-width:640px;line-height:1.7}

/* ============ 浮动 CTA ============ */
.float-cta{
  position:fixed;right:24px;bottom:24px;z-index:1040;
  display:flex;align-items:center;gap:10px;
  opacity:0;visibility:hidden;transform:translateY(12px);
  transition:opacity .3s ease,transform .3s ease,visibility .3s ease;
}
.float-cta.show{opacity:1;visibility:visible;transform:translateY(0)}
.to-top{
  width:46px;height:46px;border-radius:50%;
  border:1px solid var(--line-strong);background:rgba(11,18,32,.9);
  color:var(--primary);display:grid;place-items:center;cursor:pointer;
  backdrop-filter:blur(10px);
  transition:border-color .2s ease,transform .2s ease;
}
.to-top:hover{border-color:var(--primary);transform:translateY(-2px)}

/* ============ 响应式 ============ */
@media (max-width:1199px){
  .nav-menu a{padding:0 11px;font-size:15px}
  .search-box{width:190px}
  .footer-grid{grid-template-columns:1.4fr 1fr 1fr;gap:30px}
}
@media (max-width:991px){
  body{font-size:16px}
  .nav-toggle{display:block;margin-left:auto}
  .nav-menu{
    position:absolute;left:0;right:0;top:var(--header-h);
    flex-direction:column;align-items:stretch;gap:0;
    background:#fff;border-bottom:1px solid var(--header-line);
    box-shadow:0 18px 30px -22px rgba(11,18,32,.6);
    padding:8px 12px 16px;
    display:none;
  }
  .nav-menu.open{display:flex}
  .nav-menu a{height:auto;padding:14px 12px;font-size:16px;border-radius:12px}
  .nav-menu a::after{display:none}
  .nav-menu a.active{background:rgba(25,211,197,.1)}
  .nav-menu a:hover{background:#F5F7FB}
  .nav-tools .search-box{display:none}
  .nav-tools .btn-sm{padding:10px 16px;font-size:14px}
  .section{padding:72px 0}
  .card-grid{grid-template-columns:repeat(2,1fr)}
  .form-grid{grid-template-columns:1fr}
  .footer-grid{grid-template-columns:1fr 1fr;gap:28px}
  .article-main{padding:48px 0 16px}
}
@media (max-width:767px){
  .article-hero{padding:40px 0 34px}
  .article-meta{gap:10px 16px;font-size:13.5px}
  .section{padding:56px 0}
  .card-grid{grid-template-columns:1fr}
  .cta-band{padding:56px 0}
  .cta-inner{flex-direction:column;align-items:flex-start}
  .cta-actions{width:100%}
  .cta-actions .btn{flex:1 1 auto}
  .form-card{padding:22px}
  .float-cta{
    left:0;right:0;bottom:0;gap:0;
    border-top:1px solid var(--line-strong);
    background:rgba(7,12,24,.96);
    backdrop-filter:blur(12px);
    padding:8px 12px calc(8px + env(safe-area-inset-bottom));
    transform:translateY(100%);
  }
  .float-cta.show{transform:translateY(0)}
  .float-cta .btn{flex:1 1 auto;height:48px}
  .float-cta .to-top{width:48px;height:48px;border-radius:14px}
}
@media (max-width:575px){
  .container{padding:0 16px}
  .logo-text{font-size:17px}
  .nav-tools .btn-sm{padding:9px 14px;font-size:13.5px}
  .footer-grid{grid-template-columns:1fr}
  .article-body{font-size:16px}
  .post-body{padding:20px}
}
@media (prefers-reduced-motion:reduce){
  *{animation:none!important;transition:none!important;scroll-behavior:auto!important}
}

/* roulang page: category1 */
:root{
  --bg:#05070F;
  --bg-2:#0B1220;
  --card:#111A2B;
  --glass:rgba(255,255,255,.055);
  --primary:#19D3C5;
  --accent:#6A5AF9;
  --amber:#FFB020;
  --text:#E8EFFA;
  --muted:#C3CFE2;
  --dim:#7C8CA6;
  --line:rgba(255,255,255,.08);
  --line-strong:rgba(25,211,197,.14);
  --r-card:18px;
  --r-img:16px;
  --r-input:12px;
  --shadow-card:0 0 0 1px rgba(25,211,197,.14),0 20px 48px -20px rgba(0,0,0,.85);
  --glow-btn:0 0 22px rgba(25,211,197,.35);
  --shell:1200px;
}
*{box-sizing:border-box}
html{scroll-behavior:smooth;-webkit-text-size-adjust:100%}
body{
  margin:0;
  background:var(--bg);
  color:var(--muted);
  font-family:"PingFang SC","Microsoft YaHei","Noto Sans SC",system-ui,-apple-system,"Segoe UI",Roboto,Inter,Barlow,Arial,sans-serif;
  font-size:17px;
  line-height:1.85;
  -webkit-font-smoothing:antialiased;
}
img{max-width:100%;display:block;border-radius:var(--r-img)}
a{color:inherit;text-decoration:none}
button{font-family:inherit}
p{margin:0 0 1.2em}
h1,h2,h3,h4{margin:0;color:var(--text);letter-spacing:0;font-weight:700}
ul{margin:0;padding:0;list-style:none}
:focus-visible{outline:2px solid var(--primary);outline-offset:3px}
.container{width:100%;max-width:var(--shell);margin:0 auto;padding-left:20px;padding-right:20px}
@media (min-width:768px){.container{padding-left:32px;padding-right:32px}}

/* ---------- header ---------- */
.site-header{
  position:sticky;top:0;z-index:1030;background:#fff;
  border-bottom:1px solid #E6EAF2;
  box-shadow:0 6px 20px -14px rgba(11,18,32,.45);
  transition:box-shadow .25s ease;
}
.site-header.shrink{box-shadow:0 10px 28px -16px rgba(11,18,32,.6)}
.nav-inner{display:flex;align-items:center;gap:24px;height:72px;transition:height .25s ease}
.site-header.shrink .nav-inner{height:60px}
.logo{display:flex;align-items:center;gap:10px;flex:0 0 auto}
.logo-mark{
  width:36px;height:36px;display:grid;place-items:center;border-radius:11px;
  background:linear-gradient(135deg,rgba(25,211,197,.14),rgba(106,90,249,.16));
  box-shadow:0 0 0 1px rgba(25,211,197,.28),0 0 18px rgba(25,211,197,.18);
}
.logo-mark svg{width:22px;height:22px}
.logo-text{color:#0B1220;font-size:18px;font-weight:800;letter-spacing:0;white-space:nowrap}
.nav-menu{display:flex;align-items:center;gap:26px;margin-left:8px}
.nav-menu a{
  position:relative;color:#38455C;font-size:15px;font-weight:500;padding:6px 0;
  transition:color .2s ease;white-space:nowrap;
}
.nav-menu a::after{
  content:"";position:absolute;left:0;right:0;bottom:-2px;height:2px;border-radius:2px;
  background:var(--primary);transform:scaleX(0);transform-origin:center;transition:transform .22s ease;
}
.nav-menu a:hover{color:#0B1220}
.nav-menu a:hover::after{transform:scaleX(1)}
.nav-menu a.active{color:var(--primary);font-weight:700}
.nav-menu a.active::after{transform:scaleX(1)}
.nav-tools{display:flex;align-items:center;gap:14px;margin-left:auto}
.search-box{
  display:flex;align-items:center;gap:8px;background:#F1F4F9;border:1px solid transparent;
  border-radius:999px;padding:8px 16px;transition:.2s ease;min-width:220px;
}
.search-box svg{width:16px;height:16px;stroke:#7C8CA6;fill:none;flex:0 0 auto}
.search-box input{
  border:0;background:transparent;outline:none;width:100%;font-size:14px;color:#0B1220;
}
.search-box input::placeholder{color:#8B98AC}
.search-box:focus-within{border-color:var(--primary);background:#fff;box-shadow:0 0 0 3px rgba(25,211,197,.16)}
.nav-toggle{
  display:none;width:44px;height:44px;border:1px solid #E6EAF2;background:#fff;border-radius:12px;
  padding:0;position:relative;
}
.nav-toggle span,.nav-toggle span::before,.nav-toggle span::after{
  content:"";position:absolute;left:50%;width:18px;height:2px;background:#0B1220;border-radius:2px;transform:translateX(-50%);
}
.nav-toggle span{top:50%;margin-top:-1px}
.nav-toggle span::before{top:-6px;left:0;transform:none}
.nav-toggle span::after{top:6px;left:0;transform:none}

/* ---------- buttons ---------- */
.btn{display:inline-flex;align-items:center;justify-content:center;gap:8px;border-radius:999px;
  font-size:15px;font-weight:600;padding:13px 26px;border:1px solid transparent;cursor:pointer;
  transition:transform .2s ease,box-shadow .22s ease,background .22s ease,color .2s ease,filter .22s ease;
  line-height:1.2;text-align:center;
}
.btn-primary{
  background:linear-gradient(135deg,var(--primary),var(--accent));color:#04121A;
  box-shadow:var(--glow-btn);font-weight:700;
}
.btn-primary:hover{filter:brightness(1.08);box-shadow:0 0 30px rgba(25,211,197,.5);color:#04121A}
.btn-primary:active{transform:translateY(1px)}
.btn-ghost{
  background:rgba(255,255,255,.06);color:var(--text);
  box-shadow:inset 0 0 0 1px rgba(255,255,255,.18);backdrop-filter:blur(10px);
}
.btn-ghost:hover{background:rgba(25,211,197,.12);color:#fff;box-shadow:inset 0 0 0 1px rgba(25,211,197,.5)}
.btn-sm{padding:9px 20px;font-size:14px}
.btn-icon{width:46px;height:46px;padding:0;font-size:18px}

/* ---------- hero ---------- */
.hero{position:relative;overflow:hidden;isolation:isolate}
.hero-bg{
  position:absolute;inset:0;background-size:cover;background-position:center;z-index:-2;
  transform:scale(1.02);
}
.hero-mask{
  position:absolute;inset:0;z-index:-1;
  background:
    radial-gradient(1100px 480px at 78% 12%,rgba(25,211,197,.20),transparent 62%),
    radial-gradient(800px 420px at 8% 88%,rgba(106,90,249,.22),transparent 66%),
    linear-gradient(180deg,rgba(5,7,15,.72) 0%,rgba(5,7,15,.80) 55%,var(--bg) 100%);
}
.hero-sub{padding:64px 0 72px;min-height:306px;display:flex;align-items:center}
.hero-inner{position:relative;z-index:2;width:100%}
.breadcrumb-bar{display:flex;align-items:center;gap:9px;font-size:14px;color:var(--dim);margin-bottom:18px;flex-wrap:wrap}
.breadcrumb-bar a{color:var(--dim);transition:color .2s ease}
.breadcrumb-bar a:hover{color:var(--primary)}
.breadcrumb-bar .cur{color:var(--primary);font-weight:600}
.hero h1{font-size:clamp(26px,3.6vw,42px);line-height:1.25;font-weight:800;max-width:820px}
.hero-lead{font-size:17px;line-height:1.85;color:var(--muted);max-width:720px;margin:18px 0 0}
.hero-actions{display:flex;gap:14px;flex-wrap:wrap;margin-top:30px}

/* ---------- sections ---------- */
.section{padding:96px 0;position:relative}
.section--alt{background:var(--bg-2)}
.section-head{max-width:760px;margin-bottom:48px}
.eyebrow{
  display:inline-flex;align-items:center;gap:8px;font-size:13px;font-weight:600;line-height:1;
  color:var(--primary);background:rgba(25,211,197,.10);border:1px solid rgba(25,211,197,.26);
  padding:8px 14px;border-radius:999px;margin-bottom:18px;letter-spacing:.02em;
}
.section-title{font-size:clamp(22px,2.6vw,32px);line-height:1.35;font-weight:700}
.section-desc{margin-top:16px;color:var(--muted);font-size:16px;max-width:720px}
.section-title + .section-desc{margin-top:14px}

/* ---------- stats ---------- */
.stat-grid{display:grid;grid-template-columns:repeat(4,1fr);gap:20px}
.stat{
  background:var(--glass);backdrop-filter:blur(14px);border-radius:var(--r-card);padding:26px 24px;
  box-shadow:inset 0 0 0 1px rgba(25,211,197,.12),inset 0 1px 0 rgba(255,255,255,.16),0 18px 40px -24px rgba(0,0,0,.9);
}
.stat strong{display:block;font-size:32px;font-weight:800;color:var(--primary);line-height:1.2;font-family:Inter,Barlow,system-ui,sans-serif}
.stat span{display:block;margin-top:8px;font-size:14px;color:var(--dim);line-height:1.6}

/* ---------- feature rows ---------- */
.feat-row{display:grid;grid-template-columns:1fr 1fr;gap:56px;align-items:center;padding:0}
.feat-row + .feat-row{margin-top:88px}
.feat-row.reverse .feat-media{order:2}
.feat-media{
  position:relative;border-radius:var(--r-img);overflow:hidden;
  box-shadow:0 0 0 1px rgba(25,211,197,.16),0 26px 60px -30px rgba(0,0,0,.95);
}
.feat-media img{width:100%;height:100%;aspect-ratio:16/10;object-fit:cover;border-radius:var(--r-img);
  transition:transform .35s ease-out}
.feat-media:hover img{transform:scale(1.04)}
.feat-media::after{
  content:"";position:absolute;inset:0;pointer-events:none;
  background:linear-gradient(180deg,rgba(5,7,15,0) 40%,rgba(5,7,15,.55) 100%);
}
.feat-body h3{font-size:22px;line-height:1.4;font-weight:600}
.feat-body p{margin-top:16px;color:var(--muted)}
.tick-list{margin-top:22px;display:grid;gap:12px}
.tick-list li{display:flex;gap:12px;align-items:flex-start;font-size:16px;color:var(--muted)}
.tick-list li::before{
  content:"";flex:0 0 auto;width:8px;height:8px;margin-top:11px;border-radius:3px;
  background:linear-gradient(135deg,var(--primary),var(--accent));box-shadow:0 0 12px rgba(25,211,197,.6);
}

/* ---------- scene cards ---------- */
.scene-grid{display:grid;grid-template-columns:repeat(4,1fr);gap:22px}
.scene-card{
  background:var(--card);border-radius:var(--r-card);padding:28px 24px;
  box-shadow:0 0 0 1px var(--line),0 18px 40px -26px rgba(0,0,0,.9);
  transition:transform .22s ease-out,box-shadow .22s ease-out;
}
.scene-card:hover{transform:translateY(-4px);box-shadow:0 0 0 1px rgba(25,211,197,.5),0 26px 52px -26px rgba(0,0,0,.95)}
.scene-icon{
  width:46px;height:46px;border-radius:13px;display:grid;place-items:center;margin-bottom:18px;
  background:linear-gradient(135deg,rgba(25,211,197,.16),rgba(106,90,249,.18));
  box-shadow:inset 0 0 0 1px rgba(25,211,197,.28);
}
.scene-icon svg{width:22px;height:22px;stroke:var(--primary);fill:none;stroke-width:1.7;stroke-linecap:round;stroke-linejoin:round}
.scene-card h3{font-size:18px;font-weight:600;line-height:1.45}
.scene-card p{margin-top:12px;font-size:15px;color:var(--dim);line-height:1.75;margin-bottom:0}
.tag-row{display:flex;flex-wrap:wrap;gap:10px;margin-top:20px}
.tag{
  font-size:13px;font-weight:600;line-height:1;padding:8px 13px;border-radius:999px;
  color:var(--primary);background:rgba(25,211,197,.09);box-shadow:inset 0 0 0 1px rgba(25,211,197,.24);
}
.tag--amber{color:var(--amber);background:rgba(255,176,32,.10);box-shadow:inset 0 0 0 1px rgba(255,176,32,.28)}
.tag--violet{color:#B9B1FF;background:rgba(106,90,249,.14);box-shadow:inset 0 0 0 1px rgba(106,90,249,.32)}

/* ---------- steps ---------- */
.steps{position:relative;padding-left:38px;margin-top:8px}
.steps::before{content:"";position:absolute;left:13px;top:10px;bottom:12px;width:2px;
  background:linear-gradient(180deg,var(--primary),rgba(106,90,249,.55),transparent)}
.step{position:relative;padding-bottom:38px}
.step:last-child{padding-bottom:0}
.step::before{
  content:"";position:absolute;left:-38px;top:8px;width:28px;height:28px;border-radius:50%;
  background:var(--bg);box-shadow:inset 0 0 0 2px var(--primary),0 0 16px rgba(25,211,197,.35);
}
.step-num{position:absolute;left:-32px;top:10px;font-size:13px;font-weight:800;color:var(--primary);
  font-family:Inter,Barlow,system-ui,sans-serif}
.step h3{font-size:19px;font-weight:600}
.step p{margin-top:10px;color:var(--muted);margin-bottom:0;max-width:760px}

/* ---------- accordion ---------- */
.faq-wrap{max-width:900px}
.accordion-item{
  background:var(--card);border:1px solid var(--line);border-radius:var(--r-card)!important;
  margin-bottom:14px;overflow:hidden;
}
.accordion-item:last-child{margin-bottom:0}
.accordion-button{
  background:transparent;color:var(--text);font-size:17px;font-weight:600;line-height:1.6;
  padding:20px 24px;box-shadow:none;border-radius:0!important;
}
.accordion-button:not(.collapsed){
  background:rgba(25,211,197,.07);color:var(--primary);box-shadow:inset 2px 0 0 var(--primary);
}
.accordion-button:focus{box-shadow:none;border-color:transparent}
.accordion-button::after{
  background-image:url("data:image/svg+xml;charset=utf-8,%3Csvg xmlns='http://www.w3.org/2000/svg' viewBox='0 0 24 24' fill='none' stroke='%237C8CA6' stroke-width='2' stroke-linecap='round' stroke-linejoin='round'%3E%3Cpath d='M6 9l6 6 6-6'/%3E%3C/svg%3E");
  background-size:18px 18px;width:18px;height:18px;transition:transform .25s ease;
}
.accordion-button:not(.collapsed)::after{
  background-image:url("data:image/svg+xml;charset=utf-8,%3Csvg xmlns='http://www.w3.org/2000/svg' viewBox='0 0 24 24' fill='none' stroke='%2319D3C5' stroke-width='2' stroke-linecap='round' stroke-linejoin='round'%3E%3Cpath d='M6 9l6 6 6-6'/%3E%3C/svg%3E");
  transform:rotate(180deg);
}
.accordion-body{padding:6px 24px 24px;color:var(--muted);font-size:16px;line-height:1.85;border-top:1px solid var(--line)}

/* ---------- contact / cta ---------- */
.cta-band{
  position:relative;overflow:hidden;border-radius:24px;padding:56px 48px;
  background:linear-gradient(135deg,rgba(25,211,197,.14),rgba(106,90,249,.22));
  box-shadow:inset 0 0 0 1px rgba(25,211,197,.24),0 30px 80px -40px rgba(25,211,197,.55);
}
.cta-band::before{
  content:"";position:absolute;right:-120px;top:-140px;width:420px;height:420px;border-radius:50%;
  background:radial-gradient(circle,rgba(255,176,32,.24),transparent 66%);
}
.cta-band h2{font-size:clamp(22px,2.6vw,30px);line-height:1.35;position:relative}
.cta-band p{margin-top:14px;color:var(--muted);max-width:640px;position:relative}
.cta-band .hero-actions{margin-top:26px;position:relative}
.contact-grid{display:grid;grid-template-columns:1fr 1fr;gap:56px;align-items:start}
.form-card{
  background:var(--card);border-radius:var(--r-card);padding:32px 28px;
  box-shadow:var(--shadow-card);
}
.field{margin-bottom:20px}
.field label{display:block;font-size:14px;color:var(--dim);margin-bottom:9px;font-weight:500}
.field input,.field textarea{
  width:100%;background:rgba(5,7,15,.6);border:1px solid var(--line);border-radius:var(--r-input);
  color:var(--text);font-size:15px;padding:13px 15px;outline:none;transition:.2s ease;font-family:inherit;
}
.field textarea{min-height:112px;resize:vertical;line-height:1.7}
.field input::placeholder,.field textarea::placeholder{color:#5D6B82}
.field input:focus,.field textarea:focus{border-color:var(--primary);box-shadow:0 0 0 3px rgba(25,211,197,.18)}
.field .hint{font-size:13px;color:var(--dim);margin-top:8px}
.field .hint.error{color:var(--amber)}
.form-card .btn{width:100%}
.info-list{display:grid;gap:18px;margin-top:26px}
.info-item{display:flex;gap:14px;align-items:flex-start}
.info-item .dot{
  flex:0 0 auto;width:34px;height:34px;border-radius:11px;display:grid;place-items:center;
  background:rgba(25,211,197,.10);box-shadow:inset 0 0 0 1px rgba(25,211,197,.28);
}
.info-item .dot svg{width:16px;height:16px;stroke:var(--primary);fill:none;stroke-width:1.8;stroke-linecap:round;stroke-linejoin:round}
.info-item strong{display:block;color:var(--text);font-size:15px;font-weight:600}
.info-item span{font-size:14px;color:var(--dim);line-height:1.7}

/* ---------- footer ---------- */
.site-footer{background:#04060D;border-top:1px solid var(--line);padding:72px 0 0;margin-top:0}
.footer-grid{display:grid;grid-template-columns:1.6fr 1fr 1fr 1.2fr;gap:40px;padding-bottom:52px}
.footer-brand .logo-text{color:var(--text);font-size:18px}
.footer-brand p{margin-top:18px;font-size:14px;color:var(--dim);line-height:1.8;max-width:320px}
.footer-title{font-size:14px;font-weight:700;color:var(--text);margin-bottom:18px;letter-spacing:.02em}
.footer-links{display:grid;gap:11px}
.footer-links a{font-size:14px;color:var(--dim);transition:color .2s ease}
.footer-links a:hover{color:var(--primary)}
.footer-bottom{
  border-top:1px solid var(--line);padding:22px 0 26px;display:flex;gap:16px;
  justify-content:space-between;flex-wrap:wrap;font-size:13px;color:#5D6B82;
}
.footer-bottom .disclaimer{color:#4E5B70}

/* ---------- float cta ---------- */
.float-cta{
  position:fixed;right:28px;bottom:28px;z-index:1040;display:flex;gap:12px;align-items:center;
  opacity:0;visibility:hidden;transform:translateY(12px);transition:.3s ease;
}
.float-cta.show{opacity:1;visibility:visible;transform:translateY(0)}
.float-cta .btn-icon{background:rgba(17,26,43,.9);color:var(--text);box-shadow:inset 0 0 0 1px var(--line-strong)}
.float-cta .btn-icon:hover{color:var(--primary);box-shadow:inset 0 0 0 1px rgba(25,211,197,.55)}

/* ---------- responsive ---------- */
@media (max-width:1199px){
  .scene-grid{grid-template-columns:repeat(2,1fr)}
  .stat-grid{grid-template-columns:repeat(4,1fr);gap:16px}
}
@media (max-width:991px){
  .nav-menu{
    position:absolute;left:0;right:0;top:100%;background:#fff;flex-direction:column;
    align-items:flex-start;gap:0;padding:8px 20px 18px;margin:0;
    border-bottom:1px solid #E6EAF2;box-shadow:0 22px 40px -24px rgba(11,18,32,.55);
    display:none;
  }
  .nav-menu.open{display:flex}
  .nav-menu a{width:100%;padding:14px 0;border-bottom:1px solid #F1F4F9;font-size:16px}
  .nav-menu a::after{display:none}
  .nav-menu a.active{color:var(--primary)}
  .nav-toggle{display:block;order:3;margin-left:12px}
  .nav-tools .search-box{display:none}
  .search-box{min-width:0}
  .section{padding:72px 0}
  .feat-row{grid-template-columns:1fr;gap:32px}
  .feat-row.reverse .feat-media{order:0}
  .feat-row + .feat-row{margin-top:64px}
  .contact-grid{grid-template-columns:1fr;gap:36px}
  .footer-grid{grid-template-columns:1fr 1fr;gap:32px}
  .cta-band{padding:44px 28px}
  .stat-grid{grid-template-columns:repeat(2,1fr)}
}
@media (max-width:575px){
  body{font-size:16px;line-height:1.8}
  .nav-inner{height:64px;gap:12px}
  .logo-text{font-size:16px}
  .nav-tools .btn{padding:9px 16px;font-size:13px}
  .hero-sub{padding:48px 0 56px;min-height:0}
  .hero-actions{gap:10px}
  .hero-actions .btn{width:100%}
  .section{padding:56px 0}
  .stat-grid{grid-template-columns:1fr 1fr;gap:14px}
  .stat{padding:20px 18px}
  .stat strong{font-size:26px}
  .scene-grid{grid-template-columns:1fr}
  .scene-card{padding:22px 20px}
  .cta-band{padding:34px 20px;border-radius:20px}
  .form-card{padding:24px 20px}
  .footer-grid{grid-template-columns:1fr;gap:28px;padding-bottom:36px}
  .float-cta{
    right:0;left:0;bottom:0;gap:10px;padding:10px 16px;background:rgba(5,7,15,.94);
    border-top:1px solid var(--line-strong);backdrop-filter:blur(10px);height:64px;
  }
  .float-cta .btn{flex:1;padding:12px 16px}
  .float-cta .btn-icon{flex:0 0 46px;display:none}
  .steps{padding-left:32px}
  .step::before{left:-32px;width:24px;height:24px}
  .step-num{left:-27px;top:8px;font-size:12px}
}
@media (prefers-reduced-motion:reduce){
  *{animation:none!important;transition:none!important;scroll-behavior:auto!important}
}

/* roulang page: category2 */
:root{
  --bg:#05070F;
  --bg-soft:#0B1220;
  --card:#111A2B;
  --brand:#19D3C5;
  --brand-ink:#0E9C93;
  --brand-2:#6A5AF9;
  --amber:#FFB020;
  --ink:#E8EFFA;
  --text:#C3CFE2;
  --muted:#7C8CA6;
  --line:rgba(255,255,255,.09);
  --radius-lg:18px;
  --radius-md:16px;
  --radius-sm:12px;
  --shadow-card:0 0 0 1px rgba(25,211,197,.13), 0 20px 48px -24px rgba(0,0,0,.9);
  --shadow-card-hover:0 0 0 1px rgba(25,211,197,.42), 0 28px 56px -24px rgba(0,0,0,.95);
  --shadow-btn:0 0 22px rgba(25,211,197,.35);
  --maxw:1200px;
}

*{box-sizing:border-box;}
html{scroll-behavior:smooth;}
body{
  margin:0;padding:0;
  background:var(--bg);color:var(--text);
  font-family:"PingFang SC","Microsoft YaHei","Noto Sans SC",system-ui,-apple-system,"Segoe UI",sans-serif;
  font-size:17px;line-height:1.85;
  -webkit-font-smoothing:antialiased;
  overflow-x:hidden;
}
h1,h2,h3,h4{color:var(--ink);margin:0;font-weight:700;letter-spacing:0;}
p{margin:0 0 1.2em;}
p:last-child{margin-bottom:0;}
ul,ol{margin:0;padding:0;list-style:none;}
img{max-width:100%;display:block;}
a{color:inherit;text-decoration:none;transition:color .2s ease;}
button{font-family:inherit;}
:focus-visible{outline:2px solid var(--brand);outline-offset:2px;border-radius:6px;}

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

/* ============ 顶栏 ============ */
.site-header{
  position:sticky;top:0;z-index:1030;
  background:#FFFFFF;border-bottom:1px solid #E6EAF2;
  transition:box-shadow .25s ease;
}
.site-header.is-scrolled{box-shadow:0 12px 32px -22px rgba(11,18,32,.45);}
.nav-inner{display:flex;align-items:center;gap:24px;height:72px;transition:height .25s ease;}
.site-header.is-scrolled .nav-inner{height:60px;}

.logo{display:flex;align-items:center;gap:10px;color:#0B1220;font-weight:800;font-size:18px;white-space:nowrap;flex:none;}
.logo-mark{width:32px;height:32px;display:inline-flex;align-items:center;justify-content:center;border-radius:10px;background:#0B1220;flex:none;}
.logo-mark svg{width:20px;height:20px;}
.logo-text{letter-spacing:0;}

.nav-menu{display:flex;align-items:center;gap:4px;}
.nav-menu a{position:relative;padding:8px 13px;font-size:15px;color:#41506B;border-radius:999px;white-space:nowrap;}
.nav-menu a:hover{color:#0B1220;background:#F2F5FA;}
.nav-menu a.active{color:var(--brand-ink);font-weight:600;}
.nav-menu a.active::after{content:"";position:absolute;left:13px;right:13px;bottom:-2px;height:2px;border-radius:2px;background:var(--brand);}

.nav-tools{display:flex;align-items:center;gap:12px;margin-left:auto;flex:none;}
.search-box{display:flex;align-items:center;gap:8px;background:#F2F5FA;border:1px solid transparent;border-radius:999px;padding:8px 16px;transition:all .2s ease;}
.search-box:focus-within{background:#fff;border-color:var(--brand);box-shadow:0 0 0 3px rgba(25,211,197,.16);}
.search-box svg{width:16px;height:16px;stroke:#7C8CA6;fill:none;stroke-width:2;flex:none;}
.search-box input{border:0;outline:0;background:transparent;font-size:14px;color:#0B1220;width:168px;}
.search-box input::placeholder{color:#9AA8BE;}

.nav-toggle{
  display:none;width:42px;height:42px;border-radius:12px;
  border:1px solid #E6EAF2;background:#F7F9FC;
  align-items:center;justify-content:center;cursor:pointer;padding:0;flex:none;
}
.nav-toggle span{display:block;width:16px;height:2px;background:#0B1220;border-radius:2px;position:relative;transition:background .2s ease;}
.nav-toggle span::before,.nav-toggle span::after{content:"";position:absolute;left:0;width:16px;height:2px;background:#0B1220;border-radius:2px;transition:transform .22s ease,top .22s ease;}
.nav-toggle span::before{top:-5px;}
.nav-toggle span::after{top:5px;}
.nav-toggle[aria-expanded="true"] span{background:transparent;}
.nav-toggle[aria-expanded="true"] span::before{top:0;transform:rotate(45deg);}
.nav-toggle[aria-expanded="true"] span::after{top:0;transform:rotate(-45deg);}

/* ============ 按钮 ============ */
.btn{
  display:inline-flex;align-items:center;justify-content:center;gap:8px;
  border-radius:999px;padding:13px 28px;font-size:15px;font-weight:700;
  border:1px solid transparent;cursor:pointer;white-space:nowrap;
  transition:transform .18s ease,box-shadow .22s ease,filter .22s ease,background .22s ease,border-color .22s ease,color .22s ease;
}
.btn-primary{
  background:linear-gradient(135deg,#2BE6D6 0%,#8B7CFF 100%);
  color:#06131B;box-shadow:var(--shadow-btn);
}
.btn-primary:hover{filter:brightness(1.08);color:#06131B;box-shadow:0 0 32px rgba(25,211,197,.55);}
.btn-primary:active{transform:translateY(1px);}
.btn-ghost{
  background:rgba(255,255,255,.06);border-color:rgba(255,255,255,.2);color:var(--ink);
  backdrop-filter:blur(10px);
}
.btn-ghost:hover{background:rgba(25,211,197,.14);border-color:rgba(25,211,197,.55);color:var(--ink);}
.btn-ghost:active{transform:translateY(1px);}
.btn-lg{padding:15px 34px;font-size:16px;}
.btn-sm{padding:9px 20px;font-size:14px;}

/* ============ Hero ============ */
.hero{
  position:relative;overflow:hidden;
  padding:68px 0 76px;
  background-image:
    linear-gradient(180deg,rgba(5,7,15,.86) 0%,rgba(5,7,15,.93) 58%,#05070F 100%),
    url("/assets/images/backpic/back-2.webp");
  background-size:cover,cover;
  background-position:center,center;
  background-repeat:no-repeat;
}
.hero::after{
  content:"";position:absolute;right:-150px;top:-180px;width:540px;height:540px;
  background:radial-gradient(circle,rgba(106,90,249,.30) 0%,rgba(106,90,249,0) 70%);
  pointer-events:none;
}
.hero .container{position:relative;z-index:2;}

.crumbs{display:flex;align-items:center;gap:10px;font-size:14px;color:var(--muted);margin-bottom:22px;flex-wrap:wrap;}
.crumbs a{color:#9FB0C9;}
.crumbs a:hover{color:var(--brand);}
.crumbs .current{color:var(--brand);}

.badge-pill{
  display:inline-flex;align-items:center;gap:7px;
  padding:7px 15px;border-radius:999px;font-size:13px;font-weight:600;
  color:var(--brand);background:rgba(25,211,197,.10);border:1px solid rgba(25,211,197,.28);
  margin-bottom:20px;
}
.badge-pill i{font-size:12px;}

.hero h1{
  font-size:clamp(28px,4vw,46px);line-height:1.25;font-weight:800;
  margin-bottom:18px;max-width:900px;
}
.hero-lead{font-size:17px;line-height:1.9;color:var(--text);max-width:760px;margin-bottom:30px;}
.hero-actions{display:flex;flex-wrap:wrap;gap:14px;}

.hero-stats{
  display:grid;grid-template-columns:repeat(4,1fr);gap:20px;
  margin-top:46px;padding-top:32px;border-top:1px solid var(--line);
}
.hero-stats strong{
  display:block;font-size:26px;font-weight:800;color:var(--brand);
  font-family:"Inter","Barlow",system-ui,sans-serif;line-height:1.2;margin-bottom:4px;
}
.hero-stats span{font-size:13px;color:var(--muted);}

/* ============ 板块 ============ */
.section{padding:96px 0;}
.section-alt{background:var(--bg-soft);}
.section-head{max-width:780px;margin-bottom:44px;}
.section-head.center{margin-left:auto;margin-right:auto;text-align:center;}
.eyebrow{display:inline-block;font-size:13px;font-weight:700;color:var(--brand);margin-bottom:12px;letter-spacing:.02em;}
.section-head h2{font-size:clamp(22px,2.6vw,32px);line-height:1.35;margin-bottom:14px;}
.section-desc{color:#93A3BA;font-size:16px;line-height:1.85;margin:0;}

/* ============ 卡片网格 ============ */
.grid-3{display:grid;grid-template-columns:repeat(3,1fr);gap:22px;}
.grid-2{display:grid;grid-template-columns:repeat(2,1fr);gap:22px;}
.grid-4{display:grid;grid-template-columns:repeat(4,1fr);gap:20px;}

.card-dark{
  background:var(--card);border-radius:var(--radius-lg);padding:26px;
  box-shadow:var(--shadow-card);
  transition:transform .22s ease,box-shadow .22s ease;
}
.card-dark:hover{transform:translateY(-4px);box-shadow:var(--shadow-card-hover);}
.card-icon{
  width:46px;height:46px;border-radius:13px;display:inline-flex;align-items:center;justify-content:center;
  background:rgba(25,211,197,.10);color:var(--brand);font-size:18px;margin-bottom:18px;
}
.card-dark h3{font-size:19px;line-height:1.45;margin-bottom:10px;}
.card-dark p{font-size:15px;line-height:1.85;color:#93A3BA;margin:0;}

/* ============ 流程时间线 ============ */
.steps-layout{display:grid;grid-template-columns:1.7fr 1fr;gap:48px;align-items:start;}
.timeline{position:relative;}
.timeline::before{
  content:"";position:absolute;left:19px;top:10px;bottom:26px;width:2px;
  background:linear-gradient(180deg,rgba(25,211,197,.75) 0%,rgba(106,90,249,.42) 62%,rgba(106,90,249,0) 100%);
}
.timeline li{position:relative;padding:0 0 34px 66px;}
.timeline li:last-child{padding-bottom:0;}
.timeline .num{
  position:absolute;left:0;top:0;width:40px;height:40px;border-radius:50%;
  display:flex;align-items:center;justify-content:center;
  font-size:15px;font-weight:800;color:#06131B;
  background:linear-gradient(135deg,#2BE6D6,#8B7CFF);
  box-shadow:0 0 18px rgba(25,211,197,.42);
  font-family:"Inter","Barlow",system-ui,sans-serif;
}
.timeline h3{font-size:19px;line-height:1.45;margin-bottom:8px;}
.timeline p{font-size:15px;line-height:1.85;color:#93A3BA;margin:0;}

.side-note{
  background:rgba(255,255,255,.055);
  backdrop-filter:blur(14px);
  border-radius:var(--radius-lg);
  padding:28px;
  box-shadow:0 0 0 1px rgba(25,211,197,.14), 0 24px 52px -28px rgba(0,0,0,.95), inset 0 1px 0 rgba(255,255,255,.16);
  position:sticky;top:96px;
}
.side-note h3{font-size:18px;margin-bottom:16px;}
.check-list li{position:relative;padding:9px 0 9px 26px;font-size:15px;color:#A9B7CC;line-height:1.75;border-bottom:1px dashed rgba(255,255,255,.08);}
.check-list li:last-child{border-bottom:0;padding-bottom:0;}
.check-list li::before{
  content:"";position:absolute;left:2px;top:19px;width:8px;height:8px;border-radius:3px;
  background:linear-gradient(135deg,#2BE6D6,#8B7CFF);
}

/* ============ 场景卡片 ============ */
.scene-card{
  background:var(--card);border-radius:var(--radius-lg);padding:28px;
  box-shadow:var(--shadow-card);display:flex;gap:18px;align-items:flex-start;
  transition:transform .22s ease,box-shadow .22s ease;
}
.scene-card:hover{transform:translateY(-4px);box-shadow:var(--shadow-card-hover);}
.scene-ico{
  width:48px;height:48px;flex:none;border-radius:14px;display:flex;align-items:center;justify-content:center;
  background:linear-gradient(135deg,rgba(25,211,197,.18),rgba(106,90,249,.22));
  color:var(--brand);font-size:19px;
}
.scene-card h3{font-size:18px;margin-bottom:8px;}
.scene-card p{font-size:15px;color:#93A3BA;margin:0;line-height:1.8;}

/* ============ 图文承诺区 ============ */
.promise-layout{display:grid;grid-template-columns:1fr 1fr;gap:52px;align-items:center;}
.promise-figure{
  border-radius:var(--radius-md);overflow:hidden;position:relative;
  box-shadow:0 0 0 1px rgba(25,211,197,.16), 0 30px 60px -30px rgba(0,0,0,.95);
}
.promise-figure img{width:100%;aspect-ratio:16/10;object-fit:cover;transition:transform .3s ease;}
.promise-figure:hover img{transform:scale(1.04);}
.promise-figure::after{
  content:"";position:absolute;inset:0;
  background:linear-gradient(180deg,rgba(5,7,15,0) 45%,rgba(5,7,15,.55) 100%);
  pointer-events:none;
}
.promise-list li{display:flex;gap:14px;padding:14px 0;border-bottom:1px solid var(--line);}
.promise-list li:last-child{border-bottom:0;}
.promise-list i{color:var(--brand);font-size:16px;margin-top:6px;flex:none;}
.promise-list strong{display:block;color:var(--ink);font-size:16px;font-weight:700;margin-bottom:4px;}
.promise-list span{font-size:15px;color:#93A3BA;line-height:1.8;}

/* ============ 数据块 ============ */
.metrics{display:grid;grid-template-columns:repeat(4,1fr);gap:20px;}
.metric{
  background:rgba(255,255,255,.04);border:1px solid var(--line);border-radius:var(--radius-lg);
  padding:26px 24px;transition:border-color .22s ease,transform .22s ease;
}
.metric:hover{border-color:rgba(25,211,197,.4);transform:translateY(-3px);}
.metric strong{
  display:block;font-family:"Inter","Barlow",system-ui,sans-serif;
  font-size:32px;font-weight:800;color:var(--brand);line-height:1.15;margin-bottom:6px;
}
.metric span{font-size:14px;color:var(--muted);}

/* ============ FAQ ============ */
.faq-wrap{max-width:880px;margin:0 auto;}
.faq .accordion-item{
  background:var(--card);border:1px solid rgba(255,255,255,.08);
  border-left:2px solid transparent;
  border-radius:var(--radius-lg);margin-bottom:14px;overflow:hidden;
}
.faq .accordion-item:has(.accordion-button:not(.collapsed)){border-left-color:var(--brand);border-color:rgba(25,211,197,.32);}
.faq .accordion-button{
  background:transparent;border:0;box-shadow:none;
  color:var(--ink);font-weight:600;font-size:17px;line-height:1.6;
  padding:20px 56px 20px 24px;width:100%;
}
.faq .accordion-button:not(.collapsed){color:var(--brand);background:rgba(25,211,197,.06);}
.faq .accordion-button:focus{box-shadow:none;border:0;outline:none;}
.faq .accordion-button::after{
  background-image:none;width:11px;height:11px;border-right:2px solid var(--muted);
  border-bottom:2px solid var(--muted);transform:rotate(45deg);
  transition:transform .25s ease,border-color .25s ease;
  position:absolute;right:26px;top:50%;margin-top:-7px;
}
.faq .accordion-button:not(.collapsed)::after{border-color:var(--brand);transform:rotate(-135deg);margin-top:-3px;}
.faq .accordion-body{padding:0 24px 24px;color:#93A3BA;font-size:15px;line-height:1.9;}

/* ============ CTA 区 ============ */
.cta-band{
  position:relative;overflow:hidden;
  background:linear-gradient(135deg,rgba(25,211,197,.13) 0%,rgba(106,90,249,.20) 100%),var(--bg-soft);
  border-radius:24px;padding:52px;
  box-shadow:0 0 0 1px rgba(25,211,197,.20), 0 34px 70px -34px rgba(0,0,0,.95);
}
.cta-band::after{
  content:"";position:absolute;right:-120px;bottom:-160px;width:420px;height:420px;
  background:radial-gradient(circle,rgba(25,211,197,.30) 0%,rgba(25,211,197,0) 70%);
  pointer-events:none;
}
.cta-layout{display:grid;grid-template-columns:1.05fr 1fr;gap:48px;position:relative;z-index:2;align-items:start;}
.cta-layout h2{font-size:clamp(22px,2.4vw,30px);line-height:1.4;margin-bottom:16px;}
.cta-layout p{color:#A9B7CC;font-size:15px;line-height:1.9;}
.cta-tags{display:flex;flex-wrap:wrap;gap:10px;margin-top:22px;}
.tag{
  display:inline-flex;align-items:center;gap:6px;padding:7px 14px;border-radius:999px;
  font-size:13px;color:#B9C6DA;background:rgba(255,255,255,.06);border:1px solid rgba(255,255,255,.12);
}
.tag i{color:var(--brand);font-size:12px;}

.form-dark .form-label{font-size:14px;color:#A9B7CC;margin-bottom:8px;}
.form-dark .form-control{
  background:rgba(255,255,255,.05);border:1px solid rgba(255,255,255,.14);
  border-radius:var(--radius-sm);color:var(--ink);padding:13px 16px;font-size:15px;
  transition:border-color .2s ease,box-shadow .2s ease,background .2s ease;
}
.form-dark .form-control::placeholder{color:#6B7A93;}
.form-dark .form-control:focus{
  background:rgba(255,255,255,.07);border-color:var(--brand);
  box-shadow:0 0 0 3px rgba(25,211,197,.18);color:var(--ink);
}
.form-hint{font-size:13px;color:var(--muted);margin-top:14px;}

/* ============ 页脚 ============ */
.site-footer{background:#05070F;border-top:1px solid var(--line);padding:72px 0 0;margin-top:8px;}
.footer-grid{display:grid;grid-template-columns:1.6fr 1fr 1fr 1.2fr;gap:40px;padding-bottom:48px;}
.footer-brand .logo{color:var(--ink);margin-bottom:16px;}
.footer-brand p{font-size:14px;color:var(--muted);line-height:1.85;margin:0;max-width:320px;}
.footer-title{font-size:15px;font-weight:700;color:var(--ink);margin-bottom:18px;}
.footer-links a{display:block;font-size:14px;color:var(--muted);padding:6px 0;line-height:1.6;}
.footer-links a:hover{color:var(--brand);}
.footer-contact li{font-size:14px;color:var(--muted);padding:6px 0;line-height:1.7;display:flex;gap:10px;}
.footer-contact i{color:var(--brand);margin-top:6px;font-size:13px;flex:none;}
.footer-bottom{
  border-top:1px solid var(--line);padding:22px 0 34px;
  display:flex;flex-wrap:wrap;gap:12px;justify-content:space-between;align-items:center;
  font-size:13px;color:#5D6B82;
}
.footer-bottom .note{color:#4E5B71;}

/* ============ 浮动 CTA ============ */
.float-cta{
  position:fixed;right:24px;bottom:26px;z-index:1050;
  display:flex;flex-direction:column;gap:10px;
  opacity:0;visibility:hidden;transform:translateY(14px);
  transition:opacity .3s ease,transform .3s ease,visibility .3s ease;
}
.float-cta.show{opacity:1;visibility:visible;transform:none;}
.float-cta .btn{box-shadow:0 0 24px rgba(25,211,197,.4);}
.back-top{
  width:46px;height:46px;border-radius:50%;border:1px solid rgba(255,255,255,.18);
  background:rgba(17,26,43,.9);color:var(--ink);display:flex;align-items:center;justify-content:center;
  cursor:pointer;backdrop-filter:blur(10px);transition:border-color .2s ease,color .2s ease,transform .2s ease;
  align-self:flex-end;
}
.back-top:hover{border-color:var(--brand);color:var(--brand);transform:translateY(-2px);}

/* ============ 响应式 ============ */
@media (max-width:1199px){
  .steps-layout{gap:36px;}
}
@media (max-width:991px){
  .nav-menu{
    position:fixed;top:72px;left:0;right:0;flex-direction:column;align-items:stretch;gap:2px;
    background:#fff;padding:14px 20px 20px;margin:0;
    box-shadow:0 24px 44px -26px rgba(11,18,32,.45);
    transform:translateY(-12px);opacity:0;visibility:hidden;
    transition:opacity .24s ease,transform .24s ease,visibility .24s ease;
    max-height:calc(100vh - 72px);overflow-y:auto;
  }
  .nav-menu.open{transform:none;opacity:1;visibility:visible;}
  .nav-menu a{padding:13px 16px;border-radius:12px;font-size:16px;color:#33415A;}
  .nav-menu a.active{background:#F2F5FA;color:var(--brand-ink);}
  .nav-menu a.active::after{display:none;}
  .nav-toggle{display:inline-flex;}
  .search-box{display:none;}

  .section{padding:72px 0;}
  .hero{padding:56px 0 62px;}
  .grid-3,.grid-4{grid-template-columns:repeat(2,1fr);}
  .steps-layout,.promise-layout,.cta-layout{grid-template-columns:1fr;gap:36px;}
  .side-note{position:static;}
  .metrics{grid-template-columns:repeat(2,1fr);}
  .footer-grid{grid-template-columns:1fr 1fr;gap:32px;}
  .cta-band{padding:38px 32px;}
  .hero-stats{grid-template-columns:repeat(2,1fr);gap:22px 16px;}
}
@media (max-width:767px){
  body{font-size:16px;}
  .section{padding:56px 0;}
  .hero{padding:44px 0 52px;}
  .hero h1{font-size:26px;}
  .hero-lead{font-size:16px;}
  .hero-actions .btn{flex:1 1 100%;}
  .grid-3,.grid-4,.grid-2{grid-template-columns:1fr;}
  .card-dark{padding:22px;}
  .metrics{grid-template-columns:1fr;}
  .timeline li{padding-left:58px;}
  .timeline::before{left:17px;}
  .timeline .num{width:36px;height:36px;font-size:14px;}
  .cta-band{padding:30px 22px;border-radius:20px;}
  .faq .accordion-button{font-size:16px;padding:18px 50px 18px 20px;}
  .faq .accordion-body{padding:0 20px 20px;}

  .float-cta{
    left:0;right:0;bottom:0;flex-direction:row;gap:0;
    transform:translateY(110%);
  }
  .float-cta.show{transform:none;}
  .float-cta .btn{flex:1;border-radius:0;height:60px;box-shadow:none;font-size:15px;}
  .float-cta .back-top{display:none;}
  .site-footer{padding-bottom:60px;}
}
@media (max-width:575px){
  .container{padding:0 18px;}
  .logo-text{font-size:16px;}
  .footer-grid{grid-template-columns:1fr;}
  .hero-stats{grid-template-columns:repeat(2,1fr);}
  .hero-stats strong{font-size:22px;}
}
@media (prefers-reduced-motion:reduce){
  *{transition:none !important;animation:none !important;}
  html{scroll-behavior:auto;}
}

/* roulang page: category3 */
:root{
  --bg:#05070F;
  --bg-soft:#0B1220;
  --card:#111A2B;
  --primary:#19D3C5;
  --primary-deep:#0F9E96;
  --violet:#6A5AF9;
  --amber:#FFB020;
  --text:#E8EFFA;
  --body:#C3CFE2;
  --muted:#7C8CA6;
  --line:rgba(255,255,255,.10);
  --line-strong:rgba(25,211,197,.20);
  --radius:18px;
  --radius-img:16px;
  --radius-input:12px;
  --shadow-card:0 0 0 1px rgba(25,211,197,.14),0 20px 48px -20px rgba(0,0,0,.85);
  --shadow-btn:0 0 22px rgba(25,211,197,.35);
  --container:1200px;
  --font:"PingFang SC","Microsoft YaHei","Noto Sans SC",system-ui,-apple-system,"Segoe UI",sans-serif;
}
*,*::before,*::after{box-sizing:border-box}
html{scroll-behavior:smooth;scroll-padding-top:86px}
body{
  margin:0;
  font-family:var(--font);
  font-size:17px;
  line-height:1.85;
  color:var(--body);
  background:var(--bg);
  -webkit-font-smoothing:antialiased;
  overflow-x:hidden;
}
img{max-width:100%;display:block}
a{color:inherit;text-decoration:none;transition:color .2s ease}
button,input,textarea,select{font:inherit;color:inherit}
h1,h2,h3,h4{margin:0;color:var(--text);font-weight:700;letter-spacing:0}
p{margin:0 0 1.2em}
p:last-child{margin-bottom:0}
ul{margin:0;padding:0;list-style:none}
:focus-visible{outline:2px solid var(--primary);outline-offset:3px;border-radius:6px}

.container{width:100%;max-width:var(--container);margin:0 auto;padding:0 20px;--bs-gutter-x:0}

/* ============ 按钮 ============ */
.btn{display:inline-flex;align-items:center;justify-content:center;gap:8px;
  border:none;border-radius:999px;padding:13px 26px;font-size:15px;font-weight:600;
  line-height:1;cursor:pointer;transition:transform .2s ease,box-shadow .25s ease,background .25s ease,color .2s ease;
  text-align:center;white-space:nowrap}
.btn-primary{background:linear-gradient(135deg,var(--primary) 0%,var(--violet) 100%);color:#04121A;
  box-shadow:var(--shadow-btn)}
.btn-primary:hover{box-shadow:0 0 30px rgba(25,211,197,.5);transform:translateY(-1px);color:#04121A}
.btn-primary:active{transform:translateY(1px)}
.btn-ghost{background:rgba(255,255,255,.055);color:var(--text);box-shadow:inset 0 0 0 1px rgba(25,211,197,.28)}
.btn-ghost:hover{background:rgba(25,211,197,.12);box-shadow:inset 0 0 0 1px rgba(25,211,197,.55);transform:translateY(-1px)}
.btn-ghost:active{transform:translateY(1px)}
.btn-sm{padding:10px 20px;font-size:14px}
.btn-block{width:100%}

/* ============ 顶栏 ============ */
.site-header{position:sticky;top:0;z-index:1030;background:#FFFFFF;border-bottom:1px solid #E6EAF2;
  box-shadow:0 2px 12px rgba(11,18,32,.05);transition:box-shadow .25s ease}
.site-header.scrolled{box-shadow:0 8px 24px rgba(11,18,32,.12)}
.nav-inner{display:flex;align-items:center;gap:22px;height:72px;transition:height .25s ease}
.site-header.scrolled .nav-inner{height:60px}
.logo{display:flex;align-items:center;gap:10px;color:#0B1220;font-weight:800;font-size:18px;flex-shrink:0}
.logo-mark{width:38px;height:38px;border-radius:12px;display:grid;place-items:center;
  background:#05070F;box-shadow:0 0 18px rgba(25,211,197,.35);flex-shrink:0}
.logo-mark svg{width:22px;height:22px}
.logo-text{letter-spacing:0}
.nav-menu{display:flex;align-items:center;gap:4px;margin-right:auto}
.nav-menu a{position:relative;padding:9px 14px;font-size:15px;font-weight:500;color:#3A4658;border-radius:10px;white-space:nowrap}
.nav-menu a:hover{color:#0B1220;background:#F3F6FB}
.nav-menu a.active{color:var(--primary-deep);font-weight:700}
.nav-menu a.active::after{content:"";position:absolute;left:14px;right:14px;bottom:1px;height:2px;
  background:var(--primary);border-radius:2px}
.nav-tools{display:flex;align-items:center;gap:12px;flex-shrink:0}
.search-box{display:flex;align-items:center;gap:8px;background:#F3F6FB;border:1px solid transparent;
  border-radius:999px;padding:8px 16px;transition:border-color .2s ease,background .2s ease}
.search-box svg{width:16px;height:16px;stroke:#7C8CA6;fill:none;flex-shrink:0}
.search-box input{border:none;background:transparent;outline:none;width:168px;font-size:14px;color:#0B1220}
.search-box input::placeholder{color:#93A0B4}
.search-box:focus-within{border-color:var(--primary);background:#FFFFFF;box-shadow:0 0 0 3px rgba(25,211,197,.14)}
.nav-toggle{display:none;width:44px;height:44px;border:none;background:#F3F6FB;border-radius:12px;
  position:relative;cursor:pointer;flex-shrink:0}
.nav-toggle span,.nav-toggle span::before,.nav-toggle span::after{position:absolute;left:50%;width:18px;height:2px;
  background:#0B1220;border-radius:2px;transform:translateX(-50%);transition:.25s ease}
.nav-toggle span{top:21px}
.nav-toggle span::before{content:"";top:-6px}
.nav-toggle span::after{content:"";top:6px}
.nav-toggle[aria-expanded="true"] span{background:transparent}
.nav-toggle[aria-expanded="true"] span::before{top:0;transform:translateX(-50%) rotate(45deg)}
.nav-toggle[aria-expanded="true"] span::after{top:0;transform:translateX(-50%) rotate(-45deg)}

/* ============ 页面 Hero ============ */
.page-hero{position:relative;overflow:hidden;padding:76px 0 84px;background:var(--bg-soft)}
.page-hero-bg{position:absolute;inset:0;background-size:cover;background-position:center right;
  opacity:.42;filter:saturate(.9)}
.page-hero::before{content:"";position:absolute;inset:0;
  background:linear-gradient(100deg,rgba(5,7,15,.96) 0%,rgba(5,7,15,.80) 46%,rgba(5,7,15,.44) 100%)}
.page-hero::after{content:"";position:absolute;left:0;right:0;bottom:0;height:140px;
  background:linear-gradient(to bottom,rgba(5,7,15,0) 0%,var(--bg) 100%)}
.page-hero-inner{position:relative;z-index:2;max-width:840px}
.breadcrumb-nav{display:flex;align-items:center;gap:10px;font-size:14px;color:var(--muted);margin-bottom:22px;flex-wrap:wrap}
.breadcrumb-nav a:hover{color:var(--primary)}
.breadcrumb-nav span{opacity:.5}
.breadcrumb-nav em{font-style:normal;color:var(--body)}
.eyebrow{display:inline-flex;align-items:center;gap:8px;font-size:13px;font-weight:600;
  color:var(--primary);background:rgba(25,211,197,.10);border:1px solid rgba(25,211,197,.28);
  padding:7px 15px;border-radius:999px;margin-bottom:20px}
.page-hero h1{font-size:clamp(28px,4vw,44px);line-height:1.25;font-weight:800;margin-bottom:18px}
.hero-lead{font-size:17px;color:var(--body);max-width:660px;margin-bottom:30px}
.hero-actions{display:flex;flex-wrap:wrap;gap:14px}

/* ============ 通用板块 ============ */
.section{padding:96px 0;position:relative}
.section-alt{background:var(--bg-soft)}
.section-head{max-width:760px;margin-bottom:48px}
.section-head h2{font-size:clamp(22px,2.6vw,32px);line-height:1.35;margin-bottom:16px}
.section-head p{color:var(--body);margin:0}
.section-tag{display:inline-block;font-size:13px;font-weight:600;letter-spacing:.02em;
  color:var(--violet);background:rgba(106,90,249,.14);border:1px solid rgba(106,90,249,.3);
  padding:6px 14px;border-radius:999px;margin-bottom:16px}

/* ============ 对比表 ============ */
.table-shell{background:var(--card);border-radius:var(--radius);box-shadow:var(--shadow-card);overflow:hidden}
.table-scroll{overflow-x:auto}
table.compare{width:100%;min-width:760px;border-collapse:collapse}
table.compare caption{caption-side:top;text-align:left;padding:22px 26px 6px;color:var(--muted);font-size:14px}
table.compare th,table.compare td{padding:18px 24px;text-align:left;font-size:15px;
  border-bottom:1px solid var(--line);vertical-align:middle}
table.compare thead th{background:rgba(25,211,197,.08);color:var(--text);font-weight:700;font-size:14px;
  letter-spacing:.02em;border-bottom:1px solid rgba(25,211,197,.22)}
table.compare tbody tr:nth-child(odd){background:rgba(255,255,255,.022)}
table.compare tbody tr:hover{background:rgba(25,211,197,.05)}
table.compare tbody tr:last-child td{border-bottom:none}
table.compare td:first-child{color:var(--text);font-weight:600}
table.compare .cell-note{color:var(--muted);font-size:14px}
tr.row-hot td{background:rgba(25,211,197,.07)}
tr.row-hot td:first-child{box-shadow:inset 3px 0 0 var(--primary)}
.pill{display:inline-block;font-size:13px;font-weight:600;line-height:1;padding:6px 12px;border-radius:999px}
.pill-teal{background:rgba(25,211,197,.14);color:var(--primary);border:1px solid rgba(25,211,197,.3)}
.pill-violet{background:rgba(106,90,249,.16);color:#A99FFF;border:1px solid rgba(106,90,249,.32)}
.pill-amber{background:rgba(255,176,32,.14);color:var(--amber);border:1px solid rgba(255,176,32,.32)}

/* ============ 卡片矩阵 ============ */
.card-matrix{display:grid;grid-template-columns:repeat(3,1fr);gap:22px}
.matrix-card{background:var(--card);border-radius:var(--radius);padding:26px;
  box-shadow:var(--shadow-card);transition:transform .22s ease-out,box-shadow .22s ease-out;height:100%}
.matrix-card:hover{transform:translateY(-4px);box-shadow:0 0 0 1px rgba(25,211,197,.42),0 26px 52px -22px rgba(0,0,0,.9)}
.matrix-icon{width:46px;height:46px;border-radius:14px;display:grid;place-items:center;
  background:rgba(25,211,197,.10);border:1px solid rgba(25,211,197,.24);margin-bottom:18px}
.matrix-icon svg{width:22px;height:22px;stroke:var(--primary);fill:none;stroke-width:1.7;stroke-linecap:round;stroke-linejoin:round}
.matrix-card h3{font-size:19px;font-weight:600;margin-bottom:10px}
.matrix-card p{font-size:15px;color:var(--body);margin-bottom:16px}
.matrix-card ul{display:flex;flex-direction:column;gap:9px}
.matrix-card li{position:relative;padding-left:20px;font-size:14.5px;color:var(--muted)}
.matrix-card li::before{content:"";position:absolute;left:0;top:11px;width:7px;height:7px;border-radius:2px;
  background:var(--primary);box-shadow:0 0 8px rgba(25,211,197,.6)}
.matrix-foot{display:flex;align-items:center;justify-content:space-between;margin-top:18px;
  padding-top:16px;border-top:1px solid var(--line);font-size:14px;color:var(--muted)}
.matrix-foot strong{color:var(--primary);font-weight:700}

/* ============ 图文区 ============ */
.split{display:grid;grid-template-columns:6fr 6fr;gap:48px;align-items:center}
.split-media{border-radius:var(--radius-img);overflow:hidden;box-shadow:var(--shadow-card);
  position:relative;aspect-ratio:16/10;background:var(--card)}
.split-media img{width:100%;height:100%;object-fit:cover;transition:transform .4s ease-out}
.split-media:hover img{transform:scale(1.04)}
.step-list{display:flex;flex-direction:column;gap:22px;margin-top:28px}
.step-item{display:flex;gap:16px}
.step-num{flex-shrink:0;width:34px;height:34px;border-radius:999px;display:grid;place-items:center;
  font-size:14px;font-weight:700;color:#04121A;background:linear-gradient(135deg,var(--primary),var(--violet));
  box-shadow:0 0 16px rgba(25,211,197,.4)}
.step-item h3{font-size:17px;font-weight:600;margin-bottom:6px}
.step-item p{font-size:15px;color:var(--muted);margin:0}

/* ============ 数据条 ============ */
.stat-band{display:grid;grid-template-columns:repeat(4,1fr);gap:20px;
  background:var(--card);border-radius:var(--radius);padding:34px 26px;box-shadow:var(--shadow-card)}
.stat-item{text-align:center;padding:0 10px}
.stat-item .num{font-size:clamp(26px,3vw,34px);font-weight:800;color:var(--primary);
  line-height:1.1;margin-bottom:8px;font-variant-numeric:tabular-nums}
.stat-item .label{font-size:14px;color:var(--muted)}

/* ============ FAQ ============ */
.faq-wrap{max-width:900px}
.accordion-item{background:var(--card);border:1px solid var(--line);border-radius:14px !important;
  margin-bottom:14px;overflow:hidden}
.accordion-button{background:transparent;color:var(--text);font-size:17px;font-weight:600;
  padding:22px 26px;box-shadow:none !important;border:none}
.accordion-button:not(.collapsed){color:var(--primary);background:rgba(25,211,197,.06);
  box-shadow:inset 3px 0 0 var(--primary) !important}
.accordion-button::after{background-image:none;width:12px;height:12px;border-right:2px solid var(--muted);
  border-bottom:2px solid var(--muted);transform:rotate(45deg);transition:transform .25s ease;margin-top:-4px}
.accordion-button:not(.collapsed)::after{border-color:var(--primary);transform:rotate(-135deg);margin-top:2px}
.accordion-body{padding:0 26px 24px;color:var(--body);font-size:15.5px}

/* ============ 表单 / CTA ============ */
.cta-section{position:relative;overflow:hidden;background:var(--bg-soft);padding:96px 0}
.cta-section::before{content:"";position:absolute;top:-140px;right:-120px;width:520px;height:520px;border-radius:50%;
  background:radial-gradient(circle,rgba(106,90,249,.42) 0%,rgba(106,90,249,0) 68%)}
.cta-section::after{content:"";position:absolute;bottom:-180px;left:-140px;width:480px;height:480px;border-radius:50%;
  background:radial-gradient(circle,rgba(25,211,197,.30) 0%,rgba(25,211,197,0) 68%)}
.cta-grid{position:relative;z-index:2;display:grid;grid-template-columns:5fr 7fr;gap:48px;align-items:start}
.cta-copy h2{font-size:clamp(22px,2.6vw,32px);line-height:1.35;margin-bottom:18px}
.cta-points{display:flex;flex-direction:column;gap:14px;margin-top:26px}
.cta-points li{display:flex;gap:12px;align-items:flex-start;font-size:15px;color:var(--body)}
.cta-points svg{width:20px;height:20px;stroke:var(--primary);fill:none;stroke-width:2;flex-shrink:0;margin-top:5px}
.form-card{background:rgba(255,255,255,.055);backdrop-filter:blur(14px);border-radius:var(--radius);
  padding:32px;box-shadow:inset 0 1px 0 rgba(255,255,255,.16),0 0 0 1px rgba(25,211,197,.14),0 20px 48px -20px rgba(0,0,0,.85)}
.form-card h3{font-size:20px;margin-bottom:8px}
.form-card .form-hint{font-size:14px;color:var(--muted);margin-bottom:24px}
.form-row{display:grid;grid-template-columns:1fr 1fr;gap:16px;margin-bottom:16px}
.field{display:flex;flex-direction:column;gap:8px}
.field label{font-size:14px;color:var(--body);font-weight:500}
.field input,.field textarea{width:100%;background:rgba(5,7,15,.6);border:1px solid var(--line);
  border-radius:var(--radius-input);padding:13px 16px;font-size:15px;color:var(--text);
  transition:border-color .2s ease,box-shadow .2s ease;outline:none}
.field textarea{min-height:118px;resize:vertical}
.field input::placeholder,.field textarea::placeholder{color:#66748C}
.field input:focus,.field textarea:focus{border-color:var(--primary);box-shadow:0 0 0 3px rgba(25,211,197,.16)}
.form-note{font-size:13px;color:var(--muted);margin-top:16px}
.form-note a{color:var(--primary);text-decoration:underline}

/* ============ 浮动 CTA ============ */
.float-cta{position:fixed;right:24px;bottom:24px;z-index:1040;display:flex;align-items:center;gap:10px;
  opacity:0;visibility:hidden;transform:translateY(14px);transition:opacity .3s ease,transform .3s ease,visibility .3s}
.float-cta.show{opacity:1;visibility:visible;transform:none}
.to-top{width:46px;height:46px;border-radius:999px;border:none;cursor:pointer;
  background:rgba(255,255,255,.08);color:var(--text);box-shadow:inset 0 0 0 1px rgba(25,211,197,.3),0 12px 28px -12px rgba(0,0,0,.8);
  display:grid;place-items:center;transition:background .2s ease,transform .2s ease}
.to-top:hover{background:rgba(25,211,197,.18);transform:translateY(-2px)}
.to-top svg{width:18px;height:18px;stroke:var(--primary);fill:none;stroke-width:2;stroke-linecap:round;stroke-linejoin:round}

/* ============ 页脚 ============ */
.site-footer{background:#04060D;padding:72px 0 0;border-top:1px solid var(--line)}
.footer-grid{display:grid;grid-template-columns:2fr 1fr 1.3fr 1.4fr;gap:40px;padding-bottom:52px}
.footer-brand .logo{color:var(--text);margin-bottom:16px}
.footer-brand .logo-mark{background:#0B1220}
.footer-brand p{font-size:14.5px;color:var(--muted);max-width:320px}
.footer-col h4{font-size:15px;color:var(--text);margin-bottom:18px;font-weight:600}
.footer-col ul{display:flex;flex-direction:column;gap:11px}
.footer-col a{font-size:14.5px;color:var(--muted)}
.footer-col a:hover{color:var(--primary)}
.footer-col li span{font-size:14.5px;color:var(--muted)}
.footer-bottom{border-top:1px solid var(--line);padding:24px 0 28px;display:flex;
  justify-content:space-between;align-items:center;gap:18px;flex-wrap:wrap}
.footer-bottom p{font-size:13px;color:#5D6B82;margin:0}
.footer-bottom .disclaimer{font-size:12.5px;color:#4D5A70;max-width:660px}

/* ============ 响应式 ============ */
@media (max-width:1199px){
  .nav-menu a{padding:9px 10px;font-size:14.5px}
  .search-box input{width:130px}
}
@media (max-width:991px){
  .section{padding:72px 0}
  .page-hero{padding:60px 0 68px}
  .card-matrix{grid-template-columns:repeat(2,1fr)}
  .split{grid-template-columns:1fr;gap:32px}
  .cta-grid{grid-template-columns:1fr;gap:34px}
  .stat-band{grid-template-columns:repeat(2,1fr);gap:26px}
  .footer-grid{grid-template-columns:1fr 1fr;gap:32px}
  .nav-toggle{display:block;margin-left:auto}
  .nav-menu{position:absolute;top:100%;left:0;right:0;background:#FFFFFF;flex-direction:column;
    align-items:stretch;gap:4px;padding:14px 20px 20px;border-bottom:1px solid #E6EAF2;
    box-shadow:0 18px 32px -16px rgba(11,18,32,.28);
    display:none}
  .nav-menu.open{display:flex}
  .nav-menu a{padding:13px 14px;font-size:16px;border-radius:12px}
  .nav-menu a.active::after{display:none}
  .nav-menu a.active{background:rgba(25,211,197,.12)}
  .nav-tools{order:3}
  .search-box{display:none}
}
@media (max-width:767px){
  body{font-size:16px}
  .section{padding:56px 0}
  .cta-section{padding:64px 0}
  .card-matrix{grid-template-columns:1fr}
  .form-row{grid-template-columns:1fr}
  .form-card{padding:24px;background:rgba(17,26,43,.92);backdrop-filter:none}
  .hero-actions .btn{flex:1 1 auto}
  .stat-band{grid-template-columns:1fr;padding:28px 22px}
  .footer-grid{grid-template-columns:1fr;gap:30px;padding-bottom:40px}
  .footer-bottom{flex-direction:column;align-items:flex-start;padding-bottom:96px}
  .float-cta{left:0;right:0;bottom:0;gap:10px;padding:10px 14px;
    background:rgba(8,12,22,.97);border-top:1px solid rgba(25,211,197,.2);transform:translateY(100%)}
  .float-cta.show{transform:none}
  .float-cta .btn{flex:1;padding:12px 10px;font-size:14.5px}
  .float-cta .to-top{display:none}
  .to-top{display:none}
}
@media (prefers-reduced-motion:reduce){
  html{scroll-behavior:auto}
  *,*::before,*::after{transition-duration:.01ms !important;animation-duration:.01ms !important}
}