:root{--paper:#F3F6F5;--ink:#0C1A22;--basin:#0E4B5A;--current:#2BB3C0;--muted:#52656b;--line:#cbd8d5}*{box-sizing:border-box}body{margin:0;background:var(--paper);color:var(--ink);font-family:Geologica,Arial,"PingFang SC",sans-serif;line-height:1.7}a{color:var(--basin);text-underline-offset:4px}button,input{font:inherit}header,footer{max-width:1240px;margin:auto;padding:26px 32px;display:flex;justify-content:space-between;gap:24px}header{border-bottom:1px solid var(--line);align-items:center}.brand{display:flex;align-items:center;gap:12px;text-decoration:none;color:var(--ink);font-size:23px;font-weight:700}.brand svg{width:28px;fill:none;stroke:var(--basin);stroke-width:2.4}nav{display:flex;align-items:center;gap:24px;flex-wrap:wrap}nav a{text-decoration:none}nav button{background:none;border:1px solid var(--line);border-radius:4px;padding:5px 10px;color:var(--basin);cursor:pointer}main{max-width:1176px;margin:auto}h1,h2,h3{line-height:1.15;letter-spacing:-.04em}h1{font-size:clamp(42px,5.8vw,80px);font-weight:500;margin:22px 0 28px}h2{font-size:clamp(28px,3.2vw,42px);font-weight:500;margin:18px 0}h3{font-size:23px;font-weight:500}.hero{padding:85px 0 80px;border-bottom:1px solid var(--line);background:linear-gradient(90deg,transparent 74%,#0e4b5a08 74%,#0e4b5a08 75%,transparent 75%)}.lead{max-width:760px;color:var(--muted);font-size:20px;line-height:1.85}.eyebrow,.number{font:12px/1.6 monospace;letter-spacing:.12em;color:var(--basin)}.button{display:inline-block;padding:16px 25px;margin-top:20px;background:var(--basin);color:white;text-decoration:none;border:0;border-radius:3px;cursor:pointer;font-weight:600}.button:hover{background:#136679}.button:disabled{background:#6c7d81;cursor:not-allowed}.section{padding:64px 0;border-bottom:1px solid var(--line)}.grid{display:grid;grid-template-columns:repeat(3,1fr);gap:36px;margin-top:38px}.grid article{border-top:3px solid var(--basin);padding-top:20px}.grid p,.offer p,.summary p,.muted{color:var(--muted)}.offer{display:grid;grid-template-columns:1.25fr 1fr;gap:100px}.offer aside{border:1px solid var(--line);background:white;padding:32px;align-self:start}.price{font-size:64px!important;line-height:1.2;color:var(--ink)!important;margin:20px 0}.price span{font-size:16px;margin-left:8px;color:var(--muted)}.steps{padding-left:24px;max-width:800px}.steps li{padding:12px 0}.compact{padding:60px 0 30px}.compact h1{font-size:clamp(36px,4.5vw,60px)}.checkout-grid{display:grid;grid-template-columns:1.2fr 1fr;gap:70px;padding-bottom:80px}form h2{font-size:26px}label{display:block;font-size:14px;font-weight:600;margin:20px 0}input:not([type=checkbox]){display:block;width:100%;margin-top:8px;padding:12px 14px;background:white;border:1px solid #9eb5b3;border-radius:3px;color:var(--ink)}input:focus{outline:2px solid var(--current);outline-offset:2px}.check{display:flex;gap:12px;align-items:flex-start;font-weight:400}.check input{margin-top:7px;min-width:18px;min-height:18px}.summary{background:white;border-top:4px solid var(--basin);padding:30px;align-self:start}.summary h2{font-size:27px}dl div{display:flex;justify-content:space-between;gap:12px;padding:15px 0;border-bottom:1px solid var(--line)}dd{margin:0;font-weight:600}.total{font-size:21px}.muted,#payment-message{font-size:14px}footer{border-top:1px solid var(--line);padding-top:40px;padding-bottom:40px;font-size:13px;margin-top:30px}footer p{margin:5px 0}footer nav{align-items:flex-start}.policy{max-width:850px;padding-bottom:60px}.policy section{padding:20px 0;border-top:1px solid var(--line)}.policy h2{font-size:29px}[data-lang=en] .zh,[data-lang=zh] .en{display:none}a:focus-visible,button:focus-visible{outline:3px solid var(--current);outline-offset:4px}@media(max-width:1240px){main{padding:0 32px}}@media(max-width:720px){header,footer{padding:20px;flex-wrap:wrap}header nav{gap:16px}main{padding:0 20px}.hero{padding:50px 0}.lead{font-size:17px}.grid,.offer,.checkout-grid{grid-template-columns:1fr;gap:28px}.section{padding:40px 0}.summary{grid-row:1}.compact{padding-top:38px}footer nav{gap:16px}.brand{font-size:21px}.price{font-size:52px!important}}