:root{color-scheme:light;--ink:#142133;--muted:#637287;--line:#dfe5eb;--paper:#f4f6f9;--lime:#c5f56c;--navy:#101d2d;--radius:20px;font-family:Inter,"PingFang SC","Microsoft YaHei",system-ui,sans-serif;font-size:16px}*{box-sizing:border-box}body{margin:0;background:var(--paper);color:var(--ink);line-height:1.6}button,input,select{font:inherit}button,a,input,select{-webkit-tap-highlight-color:transparent}button{cursor:pointer}button:disabled{cursor:default;opacity:.4}button:focus-visible,a:focus-visible,input:focus-visible,select:focus-visible{outline:3px solid #76a7df;outline-offset:3px}button{transition:background .18s,transform .18s}button:active:not(:disabled){transform:translateY(1px)}a{color:inherit}.topbar{min-height:88px;background:white;border-bottom:1px solid var(--line);padding:20px max(32px,calc((100% - 1160px)/2));display:flex;align-items:center;justify-content:space-between;gap:24px}.brand{display:flex;align-items:center;gap:13px;text-decoration:none;white-space:nowrap}.brand-mark{width:42px;height:42px;border-radius:12px;display:grid;place-items:center;background:var(--navy);color:var(--lime);font-family:monospace;font-size:22px;font-weight:700;letter-spacing:-2px}.brand strong{font-size:21px;letter-spacing:.02em}.brand-divider{color:#b5c0ce;font-weight:400;margin:0 12px}.brand-name{font-size:16px;font-weight:500}.private-label{display:flex;align-items:center;gap:8px;font-size:14px;color:#495a70}svg{width:20px;height:20px;stroke:currentColor;stroke-width:1.7;stroke-linecap:round;stroke-linejoin:round;flex-shrink:0}main{max-width:1160px;padding:58px 0 28px;margin:auto}.page-heading{display:flex;align-items:center;justify-content:space-between;gap:30px;margin-bottom:34px}.eyebrow{font-size:12px;letter-spacing:.15em;font-weight:650;color:#6c7a8d;margin:0 0 10px}h1{font-size:32px;line-height:1.5;letter-spacing:-.035em;margin:0 0 8px;font-weight:650}.intro{color:var(--muted);margin:0;font-size:16px}.protocol-label{border:1px solid var(--line);background:white;border-radius:9px;padding:8px 12px;font-size:14px;font-family:monospace;white-space:nowrap}.protocol-label span{color:var(--muted);margin-left:10px}.workspace{display:grid;grid-template-columns:minmax(0,1fr) minmax(0,1.15fr);gap:24px;align-items:start}.panel{background:white;border:1px solid var(--line);border-radius:var(--radius);padding:30px}.section-heading{display:flex;align-items:center;gap:12px;margin-bottom:27px}h2{font-size:18px;font-weight:650;line-height:1.5;margin:0}.section-heading .text-button{margin-left:auto}.step{display:grid;place-items:center;min-width:29px;height:29px;border:1px solid var(--line);border-radius:8px;font:12px monospace;color:var(--muted)}label{display:block;font-size:14px;font-weight:550;margin-bottom:9px}input,select{min-width:0;width:100%;border:1px solid #d5dee7;border-radius:10px;background:white;color:var(--ink);height:48px;padding:0 13px;font-size:16px;transition:border-color .15s}input:hover,select:hover{border-color:#8b9cb1}input:focus,select:focus{border-color:#54879e}input::placeholder{color:#8390a0;font-size:14px}.secret-wrap{display:flex;position:relative}.secret-wrap input{padding-right:62px;font-family:monospace}.secret-wrap button{position:absolute;right:5px;top:7px;height:34px;font-size:14px;background:transparent;border:0;color:var(--muted);padding:0 10px}.field-help{font-size:13px;color:var(--muted);margin:10px 0 0;line-height:1.7}.secret-actions{display:flex;align-items:center;justify-content:space-between;margin-top:18px;gap:10px}.small-button{background:#f4f7fa;border:1px solid var(--line);border-radius:8px;padding:7px 12px;font-size:14px;color:#364a62}.small-button:hover{background:#eaf0f6}.small-button span{font-size:18px}.text-button{border:0;background:transparent;color:#586d82;font-size:14px;padding:5px}.text-button:hover{color:#142133}.divider{height:1px;background:var(--line);margin:28px 0}.settings-head{display:flex;align-items:center;justify-content:space-between;gap:10px;margin-bottom:17px}.settings-head h3{font-size:14px;margin:0;font-weight:550}.settings-head span{font-size:12px;color:var(--muted)}.settings{display:grid;grid-template-columns:1.35fr 1fr 1fr;gap:12px}.settings label{font-size:13px;color:var(--muted)}.settings select{font-size:14px}.number-wrap{position:relative}.number-wrap input{padding-right:34px;font-size:14px;appearance:textfield}.number-wrap input::-webkit-inner-spin-button{appearance:none}.number-wrap span{position:absolute;top:12px;right:13px;font-size:14px;color:var(--muted)}.primary-button{width:100%;height:49px;background:var(--navy);color:white;border:0;border-radius:10px;font-size:16px;font-weight:550;margin-top:18px}.primary-button:hover{background:#233b55}.form-message{color:#b42318;font-size:14px;margin:12px 0 0}.form-message:empty{display:none}.local-note{display:flex;gap:11px;align-items:center;border-top:1px solid var(--line);margin-top:28px;padding-top:22px;color:var(--muted)}.local-note p{margin:0;font-size:13px;line-height:1.7}.local-note svg{color:#66805e}.result-column{display:flex;flex-direction:column;gap:24px}.code-panel{background:var(--navy);color:white;border-radius:var(--radius);padding:30px;position:relative;overflow:hidden;box-shadow:0 12px 24px -18px #101d2d66}.code-head{display:flex;align-items:center;justify-content:space-between;gap:16px}.code-head h2{font-size:15px;color:#dbe4ee;font-weight:500}.code-status{font-size:12px;padding:3px 9px;border:1px solid #ffffff24;border-radius:6px;color:#a1afc1}.code-status.active{color:var(--lime);border-color:#c5f56c44;background:#c5f56c0a}.code-body{display:flex;flex-direction:column;align-items:center;padding:25px 0 23px;gap:13px}.code{font-family:"SFMono-Regular",Consolas,"Liberation Mono",monospace;font-size:clamp(38px,4.7vw,60px);font-weight:600;letter-spacing:.06em;font-variant-numeric:tabular-nums;line-height:1.3;color:var(--lime);white-space:pre}.code.empty{color:#66748a}.code.long{font-size:clamp(30px,3.8vw,48px);letter-spacing:.04em}.copy-button{display:flex;align-items:center;gap:7px;border:0;border-radius:7px;padding:6px 11px;color:#c8d4e3;background:#ffffff0e;font-size:13px}.copy-button svg{width:16px;height:16px}.copy-button:hover:not(:disabled){background:#ffffff20}.countdown-row{display:flex;align-items:center;justify-content:space-between;font-size:13px;color:#a1b1c5;gap:12px}.countdown-row #countdown{font-family:monospace;color:#e6edf7;font-variant-numeric:tabular-nums}.progress-track{height:4px;background:#304155;border-radius:5px;margin-top:12px;overflow:hidden}.progress{height:100%;width:0;background:var(--lime)}.progress.urgent{background:#ffd879}.code-footer{display:flex;justify-content:space-between;gap:12px;border-top:1px solid #ffffff16;margin-top:22px;padding-top:15px;color:#90a2b9;font-size:12px;font-family:monospace}.verify-panel{padding:27px 30px}.verify-panel .section-heading{margin-bottom:21px}.verify-row{display:flex;gap:12px}.verify-row input{flex:1;font-family:monospace;font-size:19px;letter-spacing:.1em}.verify-row input::placeholder{font-family:system-ui;letter-spacing:0}.verify-button{background:var(--lime);border:1px solid #aed85c;padding:0 22px;border-radius:10px;color:#20310e;font-size:15px;font-weight:600}.verify-button:hover{background:#b4eb4e}.window-row{display:flex;align-items:center;justify-content:space-between;gap:14px;margin-top:17px}.window-row label{margin:0;font-size:13px;color:var(--muted)}.window-row select{width:auto;height:33px;border-radius:7px;font-size:13px;background:#f7f9fb;padding:0 9px}.verify-result{padding:12px 14px;font-size:14px;border-radius:9px;margin-top:16px;line-height:1.6}.verify-result.success{background:#ecf7e7;color:#345c21;border:1px solid #cce5c1}.verify-result.error{background:#fff1ed;color:#a23724;border:1px solid #f3d0c7}footer{display:flex;align-items:center;justify-content:space-between;gap:20px;border-top:1px solid var(--line);padding-top:23px;margin-top:36px;font-size:12px;color:var(--muted)}footer>span{white-space:nowrap;font-family:monospace}.footer-separator{padding:0 7px;color:#aab5c4}footer p{margin:0}footer a{white-space:nowrap;text-underline-offset:4px}noscript{display:block;padding:20px;text-align:center}@media(min-width:1500px){main{padding-top:72px}}@media(max-width:1230px){main{margin:0 32px}.topbar{padding:20px 32px}}@media(max-width:800px){main{margin:0 22px;padding-top:36px}.topbar{padding:16px 22px;min-height:76px}.brand-name{font-size:14px}.private-label{font-size:12px}.private-label svg{width:17px}.page-heading{margin-bottom:26px}.protocol-label{display:none}h1{font-size:27px}.workspace{grid-template-columns:1fr;gap:20px}.result-column{gap:20px}.panel,.code-panel{padding:25px}.code{font-size:58px}.code.long{font-size:46px}.config .section-heading{margin-bottom:22px}footer{align-items:flex-start;flex-wrap:wrap;gap:12px}footer p{order:3;flex-basis:100%}footer a{margin-left:auto}}@media(max-width:480px){.topbar{padding:15px 18px;align-items:flex-start}.brand-name,.brand-divider{display:none}.private-label{max-width:170px;align-self:center}.brand strong{font-size:20px}main{margin:0 16px;padding-top:30px}.eyebrow{font-size:11px;letter-spacing:.09em}h1{font-size:25px;letter-spacing:-.04em}.intro{font-size:14px}.panel,.code-panel{padding:22px 20px;border-radius:16px}.settings{gap:8px}.settings-head span{font-size:12px}.code{font-size:49px}.code.long{font-size:38px}.verify-button{padding:0 18px}.window-row{gap:8px}.window-row select{max-width:70%}.code-footer{font-size:12px}}@media(prefers-reduced-motion:reduce){*{transition:none!important}}