:root{color-scheme:light;--bg:#f4f6f9;--panel:#fff;--text:#162336;--muted:#748094;--line:#e5eaf0;--accent:#226b54;--soft:#edf7f1;--danger:#b74747;font-family:system-ui,-apple-system,"Segoe UI","Microsoft YaHei",sans-serif}*{box-sizing:border-box}[hidden]{display:none!important}body{margin:0;background:var(--bg);color:var(--text)}main{max-width:680px;margin:auto;padding:32px 20px 24px}header{display:flex;justify-content:space-between;align-items:center;margin-bottom:30px}.eyebrow{font-size:10px;letter-spacing:3px;color:var(--accent);font-weight:750}h1{font-size:29px;letter-spacing:-1px;margin:7px 0 6px}h2{font-size:19px;margin:0 0 14px}p{line-height:1.8}header p{font-size:13px;color:var(--muted);margin:0}.dot{display:inline-block;background:var(--accent);width:7px;height:7px;border-radius:50%;margin:0 0 5px 8px}button,input,textarea{font:inherit}button{cursor:pointer;border:0;border-radius:11px;padding:12px 15px;font-size:13px;font-weight:650}button:disabled{opacity:.55;cursor:wait}.primary{background:var(--accent);color:#fff}.ghost{background:var(--panel);color:var(--muted);border:1px solid var(--line)}.danger{background:var(--danger);color:#fff}.full{width:100%}.panel{background:var(--panel);border:1px solid var(--line);border-radius:18px;padding:23px}.panel p{font-size:13px;color:var(--muted)}#status{font-size:13px;line-height:1.7;color:var(--muted);margin-bottom:18px}#status.error,#form-error{color:var(--danger)}.toolbar{display:flex;align-items:center;justify-content:space-between;margin:0 0 20px}.toolbar span{font-size:12px;color:var(--muted)}label{display:block;font-size:12px;font-weight:650;margin-bottom:18px}input,textarea{display:block;border:1px solid var(--line);border-radius:10px;padding:12px;background:var(--bg);color:var(--text);width:100%;margin-top:8px;font-size:14px}input:focus,textarea:focus{outline:2px solid var(--accent);outline-offset:1px}.search{color:var(--muted);font-weight:400}.card{background:var(--panel);border:1px solid var(--line);border-radius:16px;padding:18px 20px;margin:12px 0}.card-top{display:flex;justify-content:space-between;align-items:center;gap:10px}.card-name{font-size:14px;font-weight:650;overflow-wrap:anywhere}.delete{background:transparent;color:var(--muted);font-size:11px;padding:5px 0 5px 12px}.code-row{display:flex;justify-content:space-between;align-items:center;padding:16px 0}.code{font-size:34px;letter-spacing:4px;font-weight:650;font-variant-numeric:tabular-nums;cursor:pointer;background:none;color:var(--text);padding:0}.timer{font-variant-numeric:tabular-nums;font-size:12px;color:var(--accent);min-width:45px;text-align:right}.track{height:3px;background:var(--line);border-radius:5px;overflow:hidden}.bar{height:100%;width:100%;background:var(--accent);transition:width .15s linear}.hint{font-size:12px;color:var(--muted);line-height:1.8}.empty-icon{color:var(--accent);font-size:30px;margin-bottom:12px}#empty{text-align:center;padding:38px 20px}footer{font-size:11px;color:var(--muted);text-align:center;line-height:1.9;margin-top:30px}dialog{background:var(--panel);color:var(--text);border:1px solid var(--line);border-radius:20px;width:calc(100% - 32px);max-width:440px;padding:24px;max-height:90vh;overflow:auto}dialog::backdrop{background:#101d2c80;backdrop-filter:blur(3px)}.dialog-top{display:flex;align-items:center;justify-content:space-between;margin-bottom:20px}.dialog-top h2{margin:0}.dialog-top button{border:0;padding:7px}.divider{font-size:11px;color:var(--muted);text-align:center;margin:0 0 18px}.upload{padding:16px;border:1px dashed var(--line);border-radius:10px;background:var(--bg)}.upload input{font-size:12px;padding:0;border:0}.upload span{display:block;font-size:10px;color:var(--muted);margin-top:8px;font-weight:400}.actions{display:flex;justify-content:flex-end;gap:12px}#form-error{font-size:12px}#notice{white-space:pre-line}@media(prefers-color-scheme:dark){:root{color-scheme:dark;--bg:#111a24;--panel:#192432;--text:#e5ecf3;--muted:#99a9ba;--line:#2b3949;--accent:#54af89;--soft:#203d34}.primary{color:#11281f}}@media(max-width:370px){main{padding:24px 14px}.code{font-size:28px;letter-spacing:2px}h1{font-size:25px}}@media(prefers-reduced-motion:reduce){*{transition:none!important}}

#announcement{white-space:pre-wrap;overflow-wrap:anywhere}#admin-panel textarea{width:100%;box-sizing:border-box}#preview-text{white-space:pre-wrap;overflow-wrap:anywhere}#admin-panel button{margin:6px 3px}#admin-panel summary{cursor:pointer;font-weight:700}