:root{
  --brand:#1a4d8f;
  --brand-2:#2563eb;
  --accent:#0ea5e9;
  --ink:#0f172a;
  --muted:#64748b;
  --line:#e2e8f0;
  --bg:#f8fafc;
  --card:#ffffff;
  --grad:linear-gradient(120deg,#1a4d8f 0%,#2563eb 55%,#0ea5e9 100%);
  --radius:16px;
  --shadow:0 10px 30px rgba(15,23,42,.08);
  --shadow-sm:0 4px 14px rgba(15,23,42,.06);
  --maxw:1180px;
}
*{box-sizing:border-box;margin:0;padding:0}
html{scroll-behavior:smooth}
body{
  font-family:-apple-system,BlinkMacSystemFont,"Segoe UI","PingFang SC","Hiragino Sans GB","Microsoft YaHei",sans-serif;
  color:var(--ink);background:var(--bg);line-height:1.6;-webkit-font-smoothing:antialiased;
}
a{color:inherit;text-decoration:none}
img{max-width:100%;display:block}
.container{width:100%;max-width:var(--maxw);margin:0 auto;padding:0 24px}
.text-grad{background:var(--grad);-webkit-background-clip:text;background-clip:text;color:transparent}

/* ===== Nav ===== */
.nav{position:sticky;top:0;z-index:50;background:rgba(255,255,255,.85);backdrop-filter:saturate(160%) blur(12px);border-bottom:1px solid var(--line)}
.nav-inner{display:flex;align-items:center;justify-content:space-between;height:64px}
.logo{display:flex;align-items:center;gap:10px}
.logo .mark{width:30px;height:30px;border-radius:8px;background:var(--grad);display:grid;place-items:center;color:#fff;font-size:14px}
.logo-img{height:44px;width:auto;display:block;filter:drop-shadow(0 1px 2px rgba(0,0,0,.06))}
.footer .logo-img{height:42px}
.icp-link{text-decoration:underline;opacity:.85}
.icp-link:hover{opacity:1}
@media(max-width:860px){.logo-img{height:36px}.footer .logo-img{height:34px}.logo .mark{width:26px;height:26px}}
.nav-links{display:flex;gap:26px;font-size:14.5px;font-weight:500;color:var(--muted)}
.nav-links a{position:relative;color:inherit;padding:6px 0;transition:color .2s}
.nav-links a:hover{color:var(--brand-2)}
.nav-links a.active{color:var(--ink);font-weight:600}
.nav-links a.active::after{content:"";position:absolute;left:0;right:0;bottom:0;height:3px;border-radius:3px;background:var(--grad)}
.nav-cta{display:flex;gap:10px;align-items:center}
.btn{display:inline-flex;align-items:center;gap:8px;padding:10px 18px;border-radius:10px;font-size:14px;font-weight:600;cursor:pointer;border:1px solid transparent;transition:.2s}
.btn-primary{background:var(--grad);color:#fff;box-shadow:var(--shadow-sm)}
.btn-primary:hover{transform:translateY(-1px);box-shadow:var(--shadow)}
.btn-ghost{background:#fff;color:var(--brand);border-color:var(--line)}
.btn-ghost:hover{border-color:var(--brand-2);color:var(--brand-2)}
.btn-light{background:rgba(255,255,255,.15);color:#fff;border-color:rgba(255,255,255,.4)}
.btn-light:hover{background:rgba(255,255,255,.25)}

/* ===== Hero ===== */
.hero{position:relative;overflow:hidden;background:var(--grad);color:#fff;padding:86px 0 96px}
.hero::after{content:"";position:absolute;inset:0;background:radial-gradient(900px 420px at 80% -10%,rgba(255,255,255,.22),transparent 60%);pointer-events:none}
.hero .eyebrow{display:inline-block;font-size:13px;font-weight:600;letter-spacing:2px;opacity:.92;background:rgba(255,255,255,.14);padding:6px 14px;border-radius:999px;margin-bottom:20px}
.hero h1{font-size:46px;line-height:1.18;font-weight:800;letter-spacing:.5px;max-width:780px}
.hero p.sub{font-size:18px;opacity:.94;margin-top:18px;max-width:620px}
.hero .cta-row{display:flex;gap:14px;margin-top:32px;flex-wrap:wrap}
.hero-stats{display:flex;gap:42px;margin-top:54px;flex-wrap:wrap}
.hero-stats .num{font-size:32px;font-weight:800}
.hero-stats .lbl{font-size:13.5px;opacity:.85;margin-top:2px}

/* ===== Section ===== */
.section{padding:78px 0}
.section.alt{background:#fff;border-top:1px solid var(--line);border-bottom:1px solid var(--line)}
.sec-head{text-align:center;max-width:680px;margin:0 auto 46px}
.sec-head .tag{font-size:13px;font-weight:700;letter-spacing:1.5px;color:var(--brand-2);text-transform:uppercase}
.sec-head h2{font-size:32px;font-weight:800;margin-top:10px}
.sec-head p{color:var(--muted);margin-top:12px;font-size:16px}

/* ===== Logo wall ===== */
.logos{display:flex;flex-wrap:wrap;gap:14px;justify-content:center;align-items:center}
.logo-chip{height:54px;min-width:130px;padding:0 22px;border:1px solid var(--line);border-radius:12px;background:#fff;display:grid;place-items:center;font-weight:700;color:var(--muted);font-size:15px;box-shadow:var(--shadow-sm)}

/* ===== Cards ===== */
.grid{display:grid;gap:22px}
.grid-2{grid-template-columns:repeat(2,1fr)}
.grid-3{grid-template-columns:repeat(3,1fr)}
.grid-4{grid-template-columns:repeat(4,1fr)}
.card{background:var(--card);border:1px solid var(--line);border-radius:var(--radius);padding:26px;box-shadow:var(--shadow-sm);transition:.2s}
.card:hover{transform:translateY(-3px);box-shadow:var(--shadow)}
.card .ic{width:46px;height:46px;border-radius:12px;background:var(--grad);display:grid;place-items:center;color:#fff;font-size:20px;margin-bottom:16px}
.card h3{font-size:19px;margin-bottom:8px}
.card p{color:var(--muted);font-size:14.5px}
.card .link{margin-top:14px;display:inline-block;color:var(--brand-2);font-weight:600;font-size:14px}
.tags{display:flex;gap:8px;flex-wrap:wrap;margin-top:14px}
.tag-pill{font-size:12px;font-weight:600;padding:4px 10px;border-radius:999px}
.tag-pill.keling{color:#1a4d8f;background:rgba(26,77,143,.1)}
.tag-pill.shuli{color:#7c3aed;background:rgba(124,58,237,.1)}

/* product mini card */
.prod{position:relative;overflow:hidden;border:1px solid var(--line);border-radius:var(--radius);background:#fff;padding:30px;box-shadow:var(--shadow-sm)}
.prod .badge{position:absolute;top:18px;right:18px;font-size:12px;font-weight:700;color:var(--brand-2);background:rgba(37,99,235,.1);padding:5px 12px;border-radius:999px}
.prod h3{font-size:24px;font-weight:800}
.prod .desc{color:var(--muted);margin-top:8px;font-size:15px}
.prod ul{margin-top:18px;display:grid;gap:10px}
.prod li{list-style:none;display:flex;gap:10px;align-items:flex-start;font-size:14.5px}
.prod li::before{content:"✓";color:#16a34a;font-weight:800;margin-top:1px}
.shot{height:auto;min-height:200px;border-radius:12px;background:#fff;border:1px solid var(--line);display:flex;align-items:center;justify-content:center;overflow:hidden;margin-top:20px}
.shot img{width:100%;height:auto;max-height:360px;object-fit:contain;display:block;border-radius:12px}

/* feature row */
.feature{display:grid;grid-template-columns:1fr 1fr;gap:40px;align-items:center;margin-top:30px}
.feature .shot{min-height:260px}
.feature .shot img{max-height:420px}
.feature h3{font-size:22px;font-weight:800}
.feature p{color:var(--muted);margin-top:10px;font-size:15px}
.feature ul{margin-top:14px;display:grid;gap:9px}
.feature li{list-style:none;display:flex;gap:10px;font-size:14.5px}
.feature li::before{content:"●";color:var(--accent);font-size:11px;margin-top:6px}

/* ===== Investors ===== */
.kpi{background:var(--ink);color:#fff;border-radius:var(--radius);padding:34px}
.kpi .num{font-size:38px;font-weight:800;background:var(--grad);-webkit-background-clip:text;background-clip:text;color:transparent}
.kpi .lbl{color:#cbd5e1;font-size:14px;margin-top:6px}
.ir-grid{display:grid;grid-template-columns:1.1fr .9fr;gap:30px;align-items:start}
.bp-box{background:#fff;border:1px solid var(--line);border-radius:var(--radius);padding:28px;box-shadow:var(--shadow-sm)}
.bp-box h3{font-size:20px;margin-bottom:8px}
.bp-box p{color:var(--muted);font-size:14.5px;margin-bottom:18px}

/* ===== Contact ===== */
.form{background:#fff;border:1px solid var(--line);border-radius:var(--radius);padding:30px;box-shadow:var(--shadow-sm);max-width:560px;margin:0 auto}
.field{margin-bottom:16px}
.field label{display:block;font-size:13.5px;font-weight:600;margin-bottom:6px}
.field input,.field textarea,.field select{width:100%;padding:11px 13px;border:1px solid var(--line);border-radius:10px;font-size:14.5px;font-family:inherit;background:#fff}
.field input:focus,.field textarea:focus{border-color:var(--brand-2);outline:none}
.tabs{display:flex;gap:8px;background:#eef2f7;padding:5px;border-radius:12px;width:fit-content;margin:0 auto 30px}
.tabs button{border:0;background:transparent;padding:9px 18px;border-radius:9px;font-weight:600;font-size:14px;color:var(--muted);cursor:pointer}
.tabs button.active{background:#fff;color:var(--brand);box-shadow:var(--shadow-sm)}

/* ===== Footer ===== */
.footer{background:var(--ink);color:#cbd5e1;padding:54px 0 30px;font-size:14px}
.footer .cols{display:grid;grid-template-columns:1.4fr 1fr 1fr 1fr;gap:30px}
.footer h4{color:#fff;font-size:15px;margin-bottom:14px}
.footer a{color:#cbd5e1;display:block;margin-bottom:9px;font-size:13.5px}
.footer a:hover{color:#fff}
.footer .bot{border-top:1px solid #1e293b;margin-top:34px;padding-top:18px;display:flex;justify-content:center;flex-wrap:nowrap;gap:10px;color:#94a3b8;font-size:13px;text-align:center;white-space:nowrap}
.footer .bot span{display:inline-block;white-space:nowrap}

/* placeholder note */
.note{font-size:12.5px;color:#b45309;background:#fffbeb;border:1px solid #fde68a;border-radius:10px;padding:10px 14px;display:inline-block;margin-top:14px}

@media(max-width:860px){
  .nav-inner{flex-wrap:nowrap;overflow-x:auto;gap:14px;justify-content:flex-start;padding:0 16px;-webkit-overflow-scrolling:touch}
  .nav-links{display:flex;gap:16px;flex-shrink:0;padding-right:8px}
  .nav-cta{flex-shrink:0}
  .grid-2,.grid-3,.grid-4,.feature,.ir-grid{grid-template-columns:1fr}
  .hero h1{font-size:34px}
  .footer .cols{grid-template-columns:1fr 1fr}
  .footer .bot{flex-wrap:nowrap;white-space:nowrap;font-size:12px}
.footer .bot span{display:inline-block;white-space:nowrap}
  .tabs{flex-wrap:wrap;width:auto;max-width:100%}
  .shot img{max-height:300px}
}