*{box-sizing:border-box;}
        body{margin:0;padding:24px;min-height:100svh;display:grid;place-items:center;
            font-family:-apple-system,BlinkMacSystemFont,"Hiragino Sans","Yu Gothic",sans-serif;
            background:var(--page-bg);color:var(--text);}
        main{width:100%;max-width:380px;background:var(--surface);border-radius:20px;padding:32px 24px;
            box-shadow:var(--shadow);}
        h1{margin:0 0 10px;font-size:28px;}
        p{font-size:14px;line-height:1.8;color:var(--muted);}
        label{display:block;font-size:14px;font-weight:700;margin:24px 0 8px;}
        input,button{width:100%;border-radius:12px;padding:14px;font-size:18px;}
        input{border:1px solid var(--border);text-align:center;letter-spacing:.45em;}
        input:focus{outline:2px solid var(--focus);outline-offset:2px;}
        button{margin-top:18px;border:0;background:var(--button-bg);color:var(--button-text);font-weight:700;cursor:pointer;}
        .error{color:var(--danger-text);background:var(--error-bg);border-radius:10px;padding:12px;}
        .admin-choice{display:flex;align-items:center;gap:10px;min-height:48px;
            margin:18px 0;padding:10px 12px;border:1px solid var(--border);border-radius:12px;cursor:pointer;}
        .admin-choice input{width:22px;height:22px;margin:0;padding:0;flex-shrink:0;accent-color:var(--focus);}
        .login-back{display:inline-flex;align-items:center;min-height:44px;margin-top:18px;font-size:14px;}