:root{
  --ink:#0f1b2d;--ink-2:#41506a;--ink-3:#6b7891;
  --bg:#ffffff;--bg-2:#f4f7fb;--line:#e3e9f2;
  --brand:#1559d6;--brand-2:#0b3a91;--accent:#16b6a3;
  --radius:14px;--max:1120px;
  --font:"Inter","PingFang SC","Microsoft YaHei","Helvetica Neue",Arial,sans-serif;
}
*{box-sizing:border-box}
html{scroll-behavior:smooth}
body{margin:0;font-family:var(--font);color:var(--ink);background:var(--bg);line-height:1.65;-webkit-font-smoothing:antialiased}
a{color:var(--brand);text-decoration:none}
a:hover{text-decoration:underline}
img{max-width:100%}
.wrap{max-width:var(--max);margin:0 auto;padding:0 20px}

/* language switching: English by default, Chinese when html[lang=zh-CN] */
html[lang="en"] .zh{display:none!important}
html[lang="zh-CN"] .en{display:none!important}

/* header */
.top{position:sticky;top:0;z-index:20;background:rgba(255,255,255,.92);backdrop-filter:saturate(1.4) blur(10px);border-bottom:1px solid var(--line)}
.top .wrap{display:flex;align-items:center;justify-content:space-between;height:68px;gap:16px}
.brand{display:flex;align-items:center;gap:10px;color:var(--ink);font-weight:700;letter-spacing:.2px}
.brand:hover{text-decoration:none}
.brand img{width:34px;height:34px}
.brand small{display:block;font-weight:500;font-size:11px;color:var(--ink-3);letter-spacing:.3px}
.nav{display:flex;align-items:center;gap:22px;font-size:15px}
.nav a{color:var(--ink-2)}
.nav a:hover{color:var(--brand);text-decoration:none}
.lang-btn{border:1px solid var(--line);background:#fff;border-radius:999px;padding:6px 14px;font:600 13px var(--font);color:var(--ink);cursor:pointer}
.lang-btn:hover{border-color:var(--brand);color:var(--brand)}
.menu-btn{display:none;border:0;background:none;font-size:24px;cursor:pointer;color:var(--ink)}
@media (max-width:820px){
  .nav{display:none;position:absolute;top:68px;left:0;right:0;flex-direction:column;align-items:flex-start;background:#fff;border-bottom:1px solid var(--line);padding:12px 20px 18px;gap:12px}
  .nav.open{display:flex}
  .menu-btn{display:block}
}

/* hero */
.hero{background:radial-gradient(1200px 500px at 85% -10%,#dbe8ff 0,transparent 60%),radial-gradient(800px 400px at -10% 110%,#d8f6f1 0,transparent 60%),var(--bg-2);padding:96px 0 88px;border-bottom:1px solid var(--line)}
.eyebrow{display:inline-block;font-size:13px;font-weight:600;color:var(--brand);background:#e6efff;border-radius:999px;padding:5px 12px;margin-bottom:18px}
.hero h1{font-size:clamp(30px,4.6vw,50px);line-height:1.15;margin:0 0 18px;letter-spacing:-.5px;max-width:820px}
.hero p.lead{font-size:clamp(16px,1.6vw,19px);color:var(--ink-2);max-width:720px;margin:0 0 30px}
.btns{display:flex;gap:12px;flex-wrap:wrap}
.btn{display:inline-block;padding:12px 22px;border-radius:10px;font-weight:600;font-size:15px}
.btn.primary{background:var(--brand);color:#fff}
.btn.primary:hover{background:var(--brand-2);text-decoration:none}
.btn.ghost{border:1px solid #c9d6ea;color:var(--ink);background:#fff}
.btn.ghost:hover{border-color:var(--brand);text-decoration:none}

/* sections */
section{padding:80px 0}
section.alt{background:var(--bg-2);border-top:1px solid var(--line);border-bottom:1px solid var(--line)}
.sec-head{max-width:720px;margin-bottom:40px}
.sec-head h2{font-size:clamp(24px,3vw,34px);margin:0 0 10px;letter-spacing:-.3px}
.sec-head p{color:var(--ink-2);margin:0}
.grid{display:grid;gap:20px}
.grid.c3{grid-template-columns:repeat(3,1fr)}
.grid.c2{grid-template-columns:repeat(2,1fr)}
@media (max-width:900px){.grid.c3{grid-template-columns:repeat(2,1fr)}}
@media (max-width:620px){.grid.c3,.grid.c2{grid-template-columns:1fr}}
.card{background:#fff;border:1px solid var(--line);border-radius:var(--radius);padding:26px}
.card .ico{width:44px;height:44px;border-radius:12px;background:#e6efff;color:var(--brand);display:grid;place-items:center;margin-bottom:16px}
.card .ico svg{width:22px;height:22px}
.card h3{margin:0 0 8px;font-size:18px}
.card p{margin:0;color:var(--ink-2);font-size:15px}

/* facts table */
.facts{width:100%;border-collapse:collapse;background:#fff;border:1px solid var(--line);border-radius:var(--radius);overflow:hidden}
.facts th,.facts td{text-align:left;padding:14px 18px;border-bottom:1px solid var(--line);vertical-align:top;font-size:15px}
.facts tr:last-child th,.facts tr:last-child td{border-bottom:0}
.facts th{width:34%;color:var(--ink-3);font-weight:600;background:#fafcff}
@media (max-width:620px){.facts th,.facts td{display:block;width:100%}.facts th{border-bottom:0;padding-bottom:4px}}

/* contact */
.contact-list{list-style:none;margin:0;padding:0;display:grid;gap:14px}
.contact-list li{display:flex;gap:14px;align-items:flex-start}
.contact-list .k{min-width:92px;color:var(--ink-3);font-weight:600;font-size:14px;padding-top:2px}

/* legal pages */
.legal{padding:56px 0 80px}
.legal .wrap{max-width:860px}
.legal h1{font-size:clamp(26px,3.4vw,38px);margin:0 0 6px}
.legal .meta{color:var(--ink-3);font-size:14px;margin-bottom:34px}
.legal h2{font-size:20px;margin:34px 0 10px}
.legal p,.legal li{color:var(--ink-2)}
.legal ul{padding-left:22px}
.note{background:var(--bg-2);border:1px solid var(--line);border-radius:var(--radius);padding:18px 20px}

/* footer */
footer{background:#0c1626;color:#b8c3d6;padding:48px 0 30px;font-size:14px}
footer a{color:#dbe4f3}
.foot-grid{display:grid;grid-template-columns:2fr 1fr 1fr;gap:30px}
@media (max-width:720px){.foot-grid{grid-template-columns:1fr}}
footer h4{color:#fff;margin:0 0 10px;font-size:15px}
footer ul{list-style:none;margin:0;padding:0;display:grid;gap:6px}
.copy{border-top:1px solid #1f2c42;margin-top:34px;padding-top:20px;color:#8796ad;font-size:13px}