:root{--bg: #f3f4f8;--surface: #ffffff;--text: #1c2033;--muted: #6b7185;--border: #d9dce6;--primary: #4f46e5;--primary-hover: #4338ca;--danger: #c62828;--danger-bg: #fdecea;--success: #1b6e3c;--success-bg: #e7f6ed}@media(prefers-color-scheme:dark){:root{--bg: #12141c;--surface: #1c1f2b;--text: #eceef6;--muted: #9aa1b8;--border: #343850;--primary: #7c83ff;--primary-hover: #969bff;--danger: #ff8a80;--danger-bg: #3b1f1f;--success: #7ddb9f;--success-bg: #17301f}}*{box-sizing:border-box}body{margin:0;background:var(--bg);color:var(--text);font-family:system-ui,-apple-system,Segoe UI,Roboto,sans-serif;line-height:1.5}a{color:var(--primary);text-decoration:none}a:hover{text-decoration:underline}.auth-page{min-height:100vh;display:flex;align-items:center;justify-content:center;padding:16px}.auth-card{width:100%;max-width:400px;background:var(--surface);border:1px solid var(--border);border-radius:12px;padding:32px 28px;box-shadow:0 4px 24px #0000000f}.auth-card h1{margin:0 0 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