:root{color-scheme:light;--ink:#202c2c;--muted:#657473;--paper:#f6f5ef;--line:#d8ddd4;--green:#264b40;--lime:#e2efb1}*{box-sizing:border-box}body{margin:0;background:var(--paper);color:var(--ink);font:17px/1.85 -apple-system,BlinkMacSystemFont,"Segoe UI","PingFang TC",sans-serif}a{color:var(--green);text-underline-offset:4px}a:hover{opacity:.75}a:focus-visible{outline:3px solid #607d43;outline-offset:5px}header,main,footer{max-width:1120px;margin:auto;padding:0 32px}header{display:flex;align-items:center;justify-content:space-between;gap:24px;padding-top:28px;padding-bottom:28px;border-bottom:1px solid var(--line)}.brand{font-size:24px;font-weight:750;letter-spacing:-1px;text-decoration:none}.brand span{display:inline-block;background:var(--green);color:var(--lime);border-radius:10px;line-height:36px;width:36px;text-align:center;margin-right:10px}nav{display:flex;gap:25px;font-size:14px}nav a{text-decoration:none}.hero{display:grid;grid-template-columns:1.35fr 1fr;gap:64px;align-items:center;padding:90px 0 74px}.eyebrow{font-size:12px;letter-spacing:2px;font-weight:700;color:var(--green)}h1{font-size:clamp(40px,6vw,68px);line-height:1.18;letter-spacing:-2px;margin:18px 0 26px}h2{font-size:26px;line-height:1.4;margin:0 0 18px;letter-spacing:-.5px}h3{font-size:18px;margin:0 0 12px}p{margin:0 0 18px}.lead{font-size:19px;max-width:540px;color:var(--muted)}.status{font-size:13px;display:inline-block;padding:4px 12px;border:1px solid var(--line);border-radius:30px;margin:0 0 22px}.button{display:inline-block;background:var(--green);color:#fff;text-decoration:none;padding:12px 24px;border-radius:8px;font-size:15px;font-weight:600}.subtle{font-size:13px;color:var(--muted)}.calc{background:var(--green);border-radius:26px;padding:32px;color:#fff;transform:rotate(2deg);box-shadow:14px 20px 0 #e6e8da}.calc .label{font-size:11px;letter-spacing:2px;color:#c0d2c6}.screen{text-align:right;padding:38px 0 30px;border-bottom:1px solid #5b7467}.formula{font-size:17px;color:#cad9d0}.result{font:500 45px/1.6 ui-monospace,monospace;color:var(--lime)}.keys{display:grid;grid-template-columns:repeat(4,1fr);gap:10px;padding-top:24px}.key{background:#3c5c50;text-align:center;border-radius:8px;font:15px/45px ui-monospace,monospace}.key:last-child{background:var(--lime);color:var(--green)}.section{padding:52px 0;border-top:1px solid var(--line)}.columns{display:grid;grid-template-columns:repeat(3,1fr);gap:38px}.num{font:12px ui-monospace,monospace;color:var(--muted);display:block;margin-bottom:14px}.columns p{font-size:15px;color:var(--muted)}.support{display:grid;grid-template-columns:.7fr 1.3fr;gap:64px}.faq details{border-bottom:1px solid var(--line);padding:17px 0}.faq details:first-child{padding-top:0}.faq summary{cursor:pointer;font-size:16px;font-weight:600}.faq p{font-size:15px;color:var(--muted);margin:14px 0 0}.contact{background:#e9eddd;border-radius:16px;padding:32px;margin:0 0 60px;display:flex;align-items:center;justify-content:space-between;gap:24px}.contact p{font-size:15px;color:var(--muted);margin:0}.document{max-width:780px;padding:62px 0}.document h1{font-size:44px;letter-spacing:-1px}.document h2{font-size:22px;margin-top:36px}.document p,.document li{font-size:16px}.document ul{padding-left:22px}.document .intro{font-size:18px;color:var(--muted)}footer{border-top:1px solid var(--line);padding-top:25px;padding-bottom:32px;display:flex;justify-content:space-between;font-size:12px;color:var(--muted)}@media(max-width:700px){header,main,footer{padding-left:22px;padding-right:22px}header{flex-wrap:wrap;gap:12px}nav{gap:20px}.hero{grid-template-columns:1fr;gap:42px;padding:52px 0}.calc{max-width:340px;width:100%;margin:0 auto;transform:none}.columns,.support{grid-template-columns:1fr;gap:24px}.section{padding:36px 0}.contact{display:block;padding:25px}.contact .button{margin-top:20px}footer{display:block}footer nav{margin-top:12px}.document{padding-top:38px}}