:root{color-scheme:light;--bg:#f4f6f8;--card:#fff;--text:#192b3a;--muted:#566777;--border:#d3dce3;--primary:#176c6d;--error:#a12929}*{box-sizing:border-box}body{margin:0;min-height:100svh;display:grid;place-items:center;padding:24px;background:var(--bg);color:var(--text);font:16px/1.5 system-ui,-apple-system,BlinkMacSystemFont,"Segoe UI",sans-serif}.login-card{width:min(100%,430px);padding:28px;border:1px solid var(--border);border-radius:16px;background:var(--card);box-shadow:0 10px 38px #162d3e0a}header{display:flex;align-items:center;justify-content:space-between;min-height:42px;margin-bottom:20px}.brand{font-size:22px;letter-spacing:.13em}.eyebrow{color:var(--muted);font-size:13px}h1{font-size:28px;line-height:1.2;margin:8px 0 12px}p{color:var(--muted);margin:12px 0 20px}form{display:grid;gap:16px}form[hidden],[hidden]{display:none!important}label{display:grid;gap:6px;font-weight:600;font-size:14px}input{font:inherit;font-size:16px;width:100%;min-height:46px;padding:10px 12px;border:1px solid var(--border);border-radius:8px;background:var(--card);color:var(--text)}button{font:inherit;min-height:46px;padding:10px 16px;border:1px solid var(--primary);border-radius:8px;color:#fff;background:var(--primary);cursor:pointer}button:disabled{opacity:.6;cursor:wait}.text-button{color:var(--primary);background:transparent;border-color:transparent}#appearance-toggle{width:42px;min-height:42px;padding:4px;background:transparent;color:var(--text);border-color:var(--border)}small{color:var(--muted)}#login-result{color:var(--error);padding:12px;border:1px solid var(--border);border-radius:8px;overflow-wrap:anywhere}#login-result.notice{color:var(--primary)}:focus-visible{outline:3px solid #69bcbc;outline-offset:3px}:root[data-theme=dark]{color-scheme:dark;--bg:#101820;--card:#18232d;--text:#eef4f8;--muted:#b1c1cc;--border:#465562;--primary:#65b8b6;--error:#ffb8b8}:root[data-theme=dark] button[type=submit]{color:#101820}@media(prefers-color-scheme:dark){:root:not([data-theme=light]){color-scheme:dark;--bg:#101820;--card:#18232d;--text:#eef4f8;--muted:#b1c1cc;--border:#465562;--primary:#65b8b6;--error:#ffb8b8}:root:not([data-theme=light]) button[type=submit]{color:#101820}}@media(max-width:480px){body{padding:16px}.login-card{padding:22px;box-shadow:none}}