:root{--bg:#f7f8fc;--surface:#fff;--ink:#172033;--muted:#657086;--line:#e4e8f0;--brand:#466ed8;--brand-dark:#294baf;--soft:#eef3ff;--shadow:0 18px 50px rgba(39,57,91,.09)}*{box-sizing:border-box}html{scroll-behavior:smooth}body{margin:0;background:var(--bg);color:var(--ink);font:16px/1.7 system-ui,-apple-system,BlinkMacSystemFont,"Segoe UI","Microsoft YaHei",sans-serif}a{color:var(--brand-dark)}.wrap{width:min(1120px,calc(100% - 40px));margin:auto}.topbar{position:sticky;top:0;z-index:5;background:rgba(255,255,255,.9);backdrop-filter:blur(16px);border-bottom:1px solid var(--line)}.nav{height:68px;display:flex;align-items:center;gap:20px}.brand{display:flex;align-items:center;gap:10px;text-decoration:none;color:var(--ink);font-weight:800;font-size:20px}.brand img{width:30px;height:30px}.navlinks{display:flex;gap:18px;margin-left:auto;font-size:14px}.navlinks a{text-decoration:none;color:var(--muted)}.navlinks a:hover{color:var(--brand-dark)}.hero{padding:92px 0 72px;background:linear-gradient(135deg,#fff 0%,#f1f5ff 100%)}.hero-grid{display:grid;grid-template-columns:1fr 1fr;gap:50px;align-items:center}.eyebrow{color:var(--brand);font-size:12px;letter-spacing:.16em;font-weight:800}.hero h1{font-size:clamp(38px,6vw,66px);line-height:1.08;letter-spacing:-.045em;margin:14px 0 20px}.hero h1 span{color:var(--brand)}.lead{font-size:19px;color:var(--muted);max-width:620px}.actions{display:flex;gap:12px;flex-wrap:wrap;margin-top:28px}.button{display:inline-flex;align-items:center;justify-content:center;border-radius:10px;padding:11px 18px;text-decoration:none;font-weight:700;border:1px solid var(--line);background:var(--surface);color:var(--ink)}.button.primary{background:var(--brand);border-color:var(--brand);color:#fff}.button.primary:hover{background:var(--brand-dark)}.button.disabled{cursor:not-allowed;color:var(--muted);background:#eef0f4}.hero-shot{background:var(--surface);padding:12px;border:1px solid var(--line);border-radius:18px;box-shadow:var(--shadow);transform:rotate(1deg)}.hero-shot img{width:100%;display:block;border-radius:10px}.section{padding:76px 0}.section.alt{background:#fff}.section h2{font-size:34px;line-height:1.2;letter-spacing:-.03em;margin:0 0 12px}.section-intro{color:var(--muted);max-width:700px}.cards{display:grid;grid-template-columns:repeat(3,1fr);gap:18px;margin-top:30px}.card{background:var(--surface);border:1px solid var(--line);border-radius:14px;padding:24px;box-shadow:var(--shadow)}.card h3{margin:0 0 8px;font-size:19px}.card p{margin:0;color:var(--muted)}.security{display:grid;grid-template-columns:1fr 1fr;gap:24px;margin-top:30px}.security ul{margin:0;padding-left:22px}.shot-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:14px;margin-top:30px}.shot-grid figure{margin:0;background:var(--surface);border:1px solid var(--line);border-radius:12px;padding:8px}.shot-grid img{display:block;width:100%;border-radius:7px}.shot-grid figcaption{padding:8px 5px 3px;color:var(--muted);font-size:13px}.legal{max-width:860px;padding:64px 0 90px}.legal h1{font-size:42px;line-height:1.2;margin:12px 0}.legal h2{font-size:24px;margin:34px 0 8px}.legal h3{font-size:18px;margin:22px 0 6px}.legal p,.legal li{color:#465269}.legal .updated{color:var(--muted);font-size:14px}.notice{padding:16px 18px;background:var(--soft);border:1px solid #d8e3ff;border-radius:10px;color:#344e8f}.footer{padding:32px 0;border-top:1px solid var(--line);color:var(--muted);font-size:14px}.footerlinks{display:flex;gap:16px;flex-wrap:wrap}.footer a{color:var(--muted)}code{padding:2px 5px;border-radius:5px;background:#f0f2f6;font-size:.92em}@media(max-width:820px){.hero-grid,.security{grid-template-columns:1fr}.hero{padding-top:62px}.cards{grid-template-columns:1fr}.shot-grid{grid-template-columns:repeat(2,1fr)}.navlinks{gap:10px;font-size:12px}.nav{gap:10px}}@media(max-width:520px){.wrap{width:min(100% - 28px,1120px)}.navlinks a:nth-child(2){display:none}.shot-grid{grid-template-columns:1fr}.section{padding:54px 0}.legal h1{font-size:34px}}
.lang-en{display:none}html[data-lang="en"] .lang-zh{display:none}html[data-lang="en"] .lang-en{display:revert}.lang-switch{border:1px solid var(--line);border-radius:8px;padding:6px 10px;background:var(--surface);color:var(--muted);font:inherit;font-size:13px;cursor:pointer}.lang-switch:hover{border-color:var(--brand);color:var(--brand-dark);background:var(--soft)}.navlinks .lang-switch{margin-left:2px}@media(max-width:520px){.navlinks{gap:7px}.lang-switch{padding:5px 8px}}

.lang-zh[hidden],.lang-en[hidden]{display:none!important}