:root{--ink:#172126;--muted:#68777b;--line:#dce6e4;--paper:#f5f8f6;--card:#fff;--accent:#0c8f79;--accent-dark:#087362;--soft:#e6f3ef;--shadow:#23453c12}html[data-theme=dark]{--ink:#e5efed;--muted:#9aadaa;--line:#2a403e;--paper:#101817;--card:#172321;--accent:#48c7ac;--accent-dark:#76e1c9;--soft:#1d3631;--shadow:#0008}*{box-sizing:border-box}html{scroll-behavior:smooth}body{margin:0;background:var(--paper);color:var(--ink);font:15px/1.7 Inter,ui-sans-serif,system-ui,-apple-system,"PingFang SC","Microsoft YaHei",sans-serif;transition:background .2s,color .2s}a{color:inherit;text-decoration:none}.shell{width:min(1120px,calc(100% - 48px));margin:0 auto}.nav{height:78px;display:flex;align-items:center;justify-content:space-between}.brand{display:flex;align-items:center;gap:10px;font-weight:750;font-size:19px;letter-spacing:-.03em}.mark{display:grid;place-items:center;width:30px;height:30px;border-radius:10px;background:var(--ink);color:var(--paper);font-size:15px}.nav nav{display:flex;align-items:center;gap:20px;color:var(--muted);font-size:13px}.nav nav a:hover,.text-link:hover{color:var(--accent)}.button{display:inline-flex;align-items:center;gap:14px;border-radius:9px;padding:12px 18px;background:var(--accent);color:#fff;font-size:14px;font-weight:650;box-shadow:0 8px 20px var(--shadow);transition:transform .15s,background .15s}.button:hover{background:var(--accent-dark);transform:translateY(-1px)}.button-small{padding:8px 13px;font-size:12px;box-shadow:none}.icon-button,.lang-button{border:1px solid var(--line);border-radius:8px;background:var(--card);color:var(--ink);cursor:pointer;font:inherit}.icon-button{width:31px;height:31px;font-size:16px}.lang-button{height:31px;padding:0 9px;font-size:11px;font-weight:700}.hero{display:grid;grid-template-columns:1.03fr .97fr;gap:80px;align-items:center;padding:92px 0 118px}.eyebrow{margin:0 0 14px;color:var(--accent);font-size:11px;font-weight:750;letter-spacing:.18em}.hero h1{max-width:600px;margin:0;font-size:clamp(42px,6vw,72px);line-height:1.08;letter-spacing:-.075em}.hero h1 em{color:var(--accent);font-style:normal}.lede{max-width:520px;margin:26px 0 31px;color:var(--muted);font-size:17px}.actions{display:flex;align-items:center;gap:26px}.text-link{color:var(--accent);font-size:13px;font-weight:650}.trust{display:flex;align-items:center;gap:8px;margin-top:32px;color:var(--muted);font-size:12px}.dot{width:7px;height:7px;background:#31ae86;border-radius:50%;box-shadow:0 0 0 4px #31ae861c}.hero-card{padding:28px;border:1px solid var(--line);border-radius:18px;background:var(--card);box-shadow:0 22px 60px var(--shadow);transform:rotate(1deg)}.card-top{display:flex;justify-content:space-between;border-bottom:1px solid var(--line);padding-bottom:18px;color:var(--muted);font-size:10px;letter-spacing:.12em;font-weight:700}.status{color:var(--accent);letter-spacing:.06em}.flow-row{display:grid;grid-template-columns:1fr auto 1fr auto 1fr;gap:10px;align-items:center;padding:29px 0}.flow-row small{display:block;color:var(--muted);font-size:9px;letter-spacing:.1em}.flow-row strong{display:block;margin-top:5px;font-size:12px;white-space:nowrap}.arrow{color:var(--accent);font-size:18px}.metric{display:flex;gap:8px;align-items:center;border-top:1px solid var(--line);padding:16px 0;font-size:12px}.metric span{color:var(--muted)}.metric b{margin-left:auto;font-size:12px}.metric i{color:var(--accent);font-style:normal;font-size:11px}.card-foot{margin-top:10px;padding:12px;border-radius:8px;background:var(--soft);color:var(--accent-dark);font-size:11px}.card-foot span{float:right;font-size:16px}.section{padding:92px 0}.section h2{margin:0 0 35px;font-size:38px;line-height:1.15;letter-spacing:-.055em}.grid{display:grid;gap:18px}.three{grid-template-columns:repeat(3,1fr)}article{padding:27px;border:1px solid var(--line);border-radius:14px;background:color-mix(in srgb,var(--card) 82%,transparent)}article .icon{display:block;margin-bottom:24px;color:var(--accent);font-size:21px}article h3{margin:0 0 8px;font-size:16px}article p{margin:0;color:var(--muted);font-size:13px}.flow-section{background:var(--soft)}.split{display:grid;grid-template-columns:1fr 1fr;gap:120px;align-items:start}.split h2{margin-bottom:20px}.split p{max-width:450px;color:var(--muted);font-size:15px}.steps{margin:0;padding:0;list-style:none}.steps li{display:flex;gap:24px;padding:18px 0;border-bottom:1px solid var(--line)}.steps li:first-child{padding-top:0}.steps b{color:var(--accent);font:12px/1.7 ui-monospace,monospace}.steps strong,.steps small{display:block}.steps strong{font-size:14px}.steps small{color:var(--muted);font-size:12px}.footer{display:flex;justify-content:space-between;padding:27px 0 36px;color:var(--muted);font-size:11px}@media (max-width:800px){.shell{width:min(100% - 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