:root{color-scheme:dark;--bg:#1a1a1a;--panel:#222;--raised:#2a2a2a;--text:#eee;--muted:#bebeb7;--line:#51534f;--mint:#c3f7e4;--amber:#f9b42c;--danger:#ffb1ac;--ink:#12251e;--focus:#f9b42c;font-family:"Noto Sans TC","Microsoft JhengHei",system-ui,sans-serif}*{box-sizing:border-box}body{margin:0;background:var(--bg);color:var(--text);line-height:1.65;min-height:100vh}body::before{content:"";position:fixed;inset:0;pointer-events:none;z-index:-1;background:radial-gradient(ellipse at 0 20%,#c3f7e409,transparent 58%)}a{color:var(--mint);text-underline-offset:4px}a:hover{color:#fff}a:active{color:var(--amber)}a:focus-visible,button:focus-visible,input:focus-visible{outline:3px solid var(--focus);outline-offset:4px}button,input{font:inherit}button{cursor:pointer}input{accent-color:var(--mint)}[hidden]{display:none!important}.site-header,footer{max-width:1200px;margin:auto;padding:26px 32px;display:flex;align-items:center;justify-content:space-between;gap:24px}.site-header{border-bottom:1px solid var(--line)}.brand{display:flex;gap:12px;align-items:center;text-decoration:none;color:var(--text);font-weight:700;letter-spacing:.02em}.brand-mark{display:grid;place-items:center;background:var(--mint);color:var(--ink);width:36px;height:36px;border-radius:10px}.brand-cn{font-size:12px;font-weight:400;color:var(--muted)}.checkout-layout{max-width:1160px;margin:76px auto 90px;padding:0 32px;display:grid;grid-template-columns:1.05fr 1fr;gap:90px}.eyebrow{font-size:11px;letter-spacing:.17em;color:var(--mint);font-weight:700}h1{font-size:clamp(32px,4vw,48px);line-height:1.3;letter-spacing:-.025em;margin:22px 0}h2{font-size:23px;margin:0 0 12px;line-height:1.4}.lead{color:var(--muted);font-size:16px;max-width:480px}.order-summary{margin:40px 0 28px;padding:26px 0;border-top:1px solid var(--line);border-bottom:1px solid var(--line)}.price{font-variant-numeric:tabular-nums;font-size:42px;letter-spacing:-.04em;line-height:1.2;margin:18px 0;color:var(--mint)}.muted,.small{color:var(--muted)}.small{font-size:13px;line-height:1.7}.centered{text-align:center}.checkout-panel{padding:30px;background:var(--panel);border:1px solid var(--line);border-radius:16px}.notice{color:var(--muted);font-size:14px;padding:12px 0;border-top:1px solid var(--line)}fieldset{padding:0;margin:20px 0;border:0}legend{position:absolute;width:1px;height:1px;overflow:hidden;clip-path:inset(50%)}.method{display:flex;align-items:center;gap:14px;min-height:82px;padding:16px;margin:10px 0;border:1px solid var(--line);border-radius:9px;background:var(--raised);cursor:pointer}.method:hover{background:#333;border-color:var(--mint)}.method:has(input:checked){border-color:var(--mint);background:#233a31}.method:has(input:focus-visible){outline:3px solid var(--focus);outline-offset:3px}.method:has(input:disabled){color:var(--muted);background:#282828;border-color:#4b4b4b;cursor:not-allowed}.method input{width:18px;height:18px;margin:0;flex-shrink:0}.method strong,.method small{display:block}.method small{color:var(--muted);font-size:12px}.method-tag{margin-left:auto;color:var(--muted);font-size:11px;white-space:nowrap}.field-label{display:block;margin:18px 0 7px;font-size:14px}input[type=email],input[readonly]{width:100%;padding:12px;background:#1b1b1b;border:1px solid #767970;border-radius:6px;color:var(--text);min-width:0}input::placeholder{color:#afafa8}input:hover{border-color:var(--mint)}input:disabled{background:#303030;color:#c7c7bf;border-color:#555}input[readonly]{color:var(--mint);background:#1c2923}.policy{font-size:13px;background:#2d2920;color:var(--text);border-left:3px solid var(--amber);padding:16px;margin:24px 0}.policy p{margin:8px 0 0}.consent{display:flex;gap:12px;align-items:flex-start;font-size:13px;margin:16px 0;cursor:pointer}.consent input{margin-top:5px;flex-shrink:0;width:17px;height:17px}.button{width:100%;min-height:48px;padding:12px 18px;border-radius:7px;font-weight:700;border:1px solid transparent;margin-top:14px}.primary{background:var(--mint);color:var(--ink)}.primary:hover{background:#e1fff3;color:#12251e}.primary:active{background:#91d8bb;color:#12251e}.secondary{background:#2b3430;color:var(--mint);border-color:#82988d}.secondary:hover{background:#3c4b43;color:#fff}.secondary:active{background:#22342a;color:var(--mint)}.button:disabled{background:#393939;color:#c3c3bb;border-color:#595959;cursor:not-allowed}.error{color:var(--danger);background:#3b2525;border:1px solid #925b58;border-radius:6px;padding:12px;font-size:14px}footer{border-top:1px solid var(--line);font-size:12px;color:var(--muted)}.result-layout{max-width:760px;padding:0 28px;margin:65px auto}.result-layout .lead{max-width:none}.order-details{margin:0}.order-details>div{display:grid;grid-template-columns:110px 1fr;gap:16px;margin:14px 0}.order-details dt{color:var(--muted)}.order-details dd{margin:0;overflow-wrap:anywhere;font-variant-numeric:tabular-nums}.license-result{margin-top:26px;padding-top:24px;border-top:1px solid var(--line)}.license-result input{margin-top:10px;font-family:Consolas,monospace;letter-spacing:.04em}.legal{max-width:760px;padding:0 28px;margin:60px auto}.legal h2{margin-top:32px}.legal li{margin:10px 0}@media(max-width:800px){.checkout-layout{grid-template-columns:1fr;gap:28px;margin:30px auto 45px;padding:0 20px}.order-summary{margin:25px 0 16px;padding:20px 0}.intro h1{font-size:34px}.site-header,footer{padding:22px 20px}.checkout-panel{padding:23px}.brand-cn{display:none}.lead{max-width:none}.price{font-size:36px}footer{flex-wrap:wrap;gap:10px}.result-layout{padding:0 20px;margin:35px auto}.order-details>div{grid-template-columns:1fr;gap:2px}.method{padding:13px}}@media(prefers-reduced-motion:reduce){*{scroll-behavior:auto!important}}