:root{color-scheme:dark;--bg: #0d1117;--panel: #161b22;--border: #30363d;--text: #e6edf3;--muted: #8b949e;--accent: #2f81f7;--danger: #f85149;--ok: #3fb950}*{box-sizing:border-box}body{margin:0;background:var(--bg);color:var(--text);font-family:system-ui,-apple-system,Segoe UI,sans-serif}.center-page{min-height:100vh;display:flex;align-items:center;justify-content:center}.panel{background:var(--panel);border:1px solid var(--border);border-radius:8px;padding:2rem;width:100%;max-width:380px}.panel h1{margin:0 0 1.5rem;font-size:1.4rem;text-align:center}label{display:block;margin-bottom:.35rem;color:var(--muted);font-size:.85rem}input{width:100%;padding:.55rem .7rem;margin-bottom:1rem;background:var(--bg);border:1px solid 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