*{box-sizing:border-box}body{margin:0;background:#f4f7f8;color:#152b3c;font-family:Inter,"Segoe UI","Microsoft JhengHei",sans-serif;font-size:16px;line-height:1.65}header{height:88px;max-width:1120px;margin:auto;display:flex;align-items:center;justify-content:space-between;padding:0 32px;border-bottom:1px solid #dce5e8}.brand{color:#142f42;text-decoration:none;font-size:25px;font-weight:800;letter-spacing:2px}.brand span{display:block;font-size:9px;letter-spacing:2.2px;color:#59717e}.tag{font-size:13px;color:#536d7b;border:1px solid #d3e0e4;padding:5px 12px;border-radius:20px}main{max-width:1060px;margin:68px auto 48px;padding:0 30px;display:grid;grid-template-columns:1fr 1.04fr;gap:44px 64px}.eyebrow{font-size:13px;color:#11796d;font-weight:700;letter-spacing:3px;margin:6px 0 18px}h1{font-size:40px;line-height:1.4;letter-spacing:-1px;margin:0 0 24px}p{margin:0 0 16px}.lead{color:#546c7b;font-size:16px;max-width:420px}.steps{list-style:none;padding:0;margin:36px 0 0;display:flex;flex-direction:column;gap:20px}.steps li{display:flex;align-items:center;gap:16px;color:#526d78;font-size:15px}.steps b{display:grid;place-items:center;width:32px;height:32px;border:1px solid #b8cdd4;border-radius:50%;font-size:13px}.steps .current{color:#11685f;font-weight:600}.steps .current b{background:#11685f;color:white;border-color:#11685f}.card{background:white;border:1px solid #dce5e8;border-radius:18px;padding:32px;box-shadow:0 12px 34px #163c4e08;align-self:start}.card-top{display:flex;gap:14px;align-items:flex-start;margin-bottom:26px}.icon{display:grid;place-items:center;border-radius:12px;background:#e6f3ee;width:43px;height:43px;font-size:25px;color:#176854;flex:none}h2{font-size:21px;line-height:1.4;margin:0 0 8px}.card-top p{font-size:13px;color:#617783;margin:0}label{font-size:14px;display:block;font-weight:600;margin-bottom:9px}label span{font-size:10px;font-weight:500;color:#667d89;display:block;letter-spacing:1px}input{width:100%;font:500 18px "Consolas",monospace;letter-spacing:1px;height:56px;border:1px solid #b4c8d2;border-radius:8px;padding:0 14px;color:#142e3e;background:#fbfcfd}input:focus{outline:3px solid #81c9b988;outline-offset:1px;border-color:#207c6c}input::placeholder{font-size:14px;letter-spacing:0;color:#81929d}.help{font-size:12px;color:#5b727e;margin-top:9px}button{cursor:pointer;border:0;font-family:inherit;font-size:15px;font-weight:600;min-height:50px;border-radius:8px;background:#15374a;color:white;padding:12px 16px;transition:background .15s}button:hover{background:#20546c}button:focus-visible,summary:focus-visible{outline:3px solid #53b49e;outline-offset:3px}button:disabled{opacity:.6;cursor:wait}#submit{width:100%;display:flex;justify-content:space-between;margin-top:22px;font-family:inherit}.error{background:#fff1ef;color:#9f3128;font-size:14px;padding:14px;border-radius:8px;margin-top:20px}.result{border-top:1px solid #e0e9ed;margin-top:26px;padding-top:22px}.success-label{color:#11685f;font-weight:700}.result-serial{font-size:12px;color:#607784;overflow-wrap:anywhere}.result-serial strong{color:#244756;display:block;font:14px Consolas,monospace;margin:3px 0 16px}.code-row{display:flex;gap:8px}.code-row input{font-size:24px;background:#eef6f4;border-color:#afcec5;letter-spacing:1px;min-width:0}.code-row button{background:#e2efe9;color:#125b50;white-space:nowrap;font-family:inherit}.next{margin-top:18px;padding:16px;background:#f6f8f9;border-radius:8px;font-size:13px}.next b{font-size:13px}.next p{margin:6px 0 0;color:#526c79}.faq{grid-column:1/-1;border-top:1px solid #dbe5e8;padding-top:30px;display:grid;grid-template-columns:1fr 1fr;gap:12px 36px}.faq h2{font-size:18px;grid-column:1/-1}.faq details{border-bottom:1px solid #dbe5e8;padding:12px 0;font-size:14px}.faq summary{cursor:pointer;min-height:30px}.faq p{font-size:13px;color:#546f7e;margin:12px 0}footer{max-width:1060px;margin:0 auto 28px;padding:0 30px;font-size:11px;color:#718692}.sr-only{position:absolute;width:1px;height:1px;padding:0;margin:-1px;overflow:hidden;clip:rect(0,0,0,0);white-space:nowrap;border:0}[hidden]{display:none!important}@media(max-width:780px){header{height:76px;padding:0 22px}.tag{display:none}main{margin-top:36px;grid-template-columns:1fr;gap:28px;padding:0 22px}h1{font-size:32px}.steps{flex-direction:row;gap:14px;justify-content:space-between;margin-top:24px}.steps li{flex-direction:column;gap:7px;font-size:11px}.card{padding:24px}.faq{grid-template-columns:1fr}.code-row input{font-size:20px}.brand{font-size:22px}footer{padding:0 22px}}