:root{color-scheme:light;--ink:#182b2a;--muted:#536c68;--paper:#f7f9f3;--green:#176650;--line:#dce5d9}*{box-sizing:border-box}html{scroll-behavior:smooth;scroll-padding-top:20px}body{margin:0;background:var(--paper);color:var(--ink);font-family:Inter,"Segoe UI","Microsoft YaHei",sans-serif;line-height:1.65}a{color:var(--green);text-underline-offset:4px}header,main,footer{width:min(1080px,calc(100% - 48px));margin:auto}header{display:flex;justify-content:space-between;align-items:center;padding:28px 0;border-bottom:1px solid var(--line)}.brand{text-decoration:none;font-weight:800;letter-spacing:.07em;font-size:14px;color:var(--ink)}.brand span{display:block;font-size:10px;color:var(--muted)}nav{display:flex;align-items:center;gap:22px}nav a{text-decoration:none}button{font:inherit;cursor:pointer}nav button{border:1px solid var(--line);border-radius:8px;background:transparent;padding:5px 12px}.hero{padding:75px 0 48px;max-width:870px}.eyebrow{font-size:12px;font-weight:750;letter-spacing:.1em;color:var(--green)}h1{font-size:clamp(36px,5.6vw,64px);line-height:1.18;letter-spacing:-.045em;margin:24px 0}h2{font-size:25px;letter-spacing:-.02em;line-height:1.35}.lead{font-size:19px;color:var(--muted);max-width:760px}.actions{display:flex;gap:12px;flex-wrap:wrap;margin:28px 0}.button{display:inline-block;border:1px solid var(--green);border-radius:8px;padding:11px 19px;color:var(--green);background:transparent;text-decoration:none;font-weight:650;font-size:14px}.primary{background:var(--green);color:white}.button:hover{filter:brightness(.9)}.flow{display:flex;gap:14px;align-items:center;flex-wrap:wrap;margin-top:40px}.flow span{border:1px solid var(--line);padding:7px 14px;border-radius:6px;background:white;font-family:monospace}.flow i{color:var(--muted);font-style:normal}.fine{font-size:12px;color:var(--muted)}.demo{border:1px solid var(--line);border-radius:18px;padding:30px;background:white;box-shadow:0 12px 36px #1c443807}.section-head{display:flex;align-items:center;justify-content:space-between;gap:15px}.section-head h2{margin:8px 0}.tag{font-size:11px;font-weight:750;white-space:nowrap;background:#edf4e7;padding:6px 11px;border-radius:30px;color:var(--green)}.demo>p,.cards p,.safety p,.closing p{color:var(--muted)}.tabs{display:flex;gap:7px;flex-wrap:wrap;margin:24px 0 18px}.tabs button{border:1px solid var(--line);background:var(--paper);border-radius:6px;padding:8px 15px;color:var(--muted);font-size:14px}.tabs button[aria-pressed=true]{background:var(--ink);color:white;border-color:var(--ink)}.table-wrap{overflow:auto;border:1px solid var(--line);border-radius:8px}table{border-collapse:collapse;width:100%;font-size:13px;text-align:left;font-family:ui-monospace,Consolas,monospace}th,td{padding:15px 18px;white-space:nowrap}th{background:var(--paper);font-size:12px;color:var(--muted);border-bottom:1px solid var(--line)}caption{padding:8px;text-align:left;color:var(--muted)}.download{display:flex;gap:12px;align-items:center;flex-wrap:wrap;margin-top:22px}.download span{font-size:12px;color:var(--muted)}details{margin-top:24px;border-top:1px solid var(--line);padding-top:18px}summary{cursor:pointer;font-size:13px;color:var(--muted)}pre{white-space:pre;overflow:auto;background:var(--paper);padding:20px;font-size:12px;max-height:360px}.cards{display:grid;grid-template-columns:repeat(3,1fr);gap:35px;padding:64px 0}.cards h2{font-size:20px}.number{font:12px monospace;color:var(--green);border-bottom:1px solid var(--green);padding-bottom:5px}.safety{border-top:1px solid var(--line);border-bottom:1px solid var(--line);padding:26px 0}.safety h2{font-size:21px}.closing{padding:44px 0 55px}footer{border-top:1px solid var(--line);padding:25px 0 35px;font-size:12px;color:var(--muted)}button:focus-visible,a:focus-visible,summary:focus-visible{outline:3px solid #dc9e32;outline-offset:4px}@media(max-width:640px){header,main,footer{width:calc(100% - 32px)}.hero{padding-top:42px}.demo{padding:20px 16px}.section-head{display:block}.tag{display:inline-block;margin-top:8px}.cards{grid-template-columns:1fr;gap:20px;padding:40px 0}.lead{font-size:17px}nav{gap:12px}.flow{gap:8px}.flow span{font-size:11px;padding:6px 9px}}