*, *::before, *::after { box-sizing: border-box; margin: 0; padding: 0; }
        :root {
            --navy: #1A3A4A; --teal: #4A9B8E; --teal-hover: #3D8578;
            --bg: #F8F7F4; --surface: #FFFFFF; --border: #E8E4DC;
            --text: #1A1A1A; --muted: #6B7280;
            --font-d: 'DM Serif Display', serif; --font-b: 'Inter', sans-serif;
        }
        html, body { height: 100%; font-family: var(--font-b); color: var(--text); }
        body { display: flex; height: 100vh; overflow: hidden; background: var(--bg); align-items: center; justify-content: center; }
        .card { background: var(--surface); border: 1px solid var(--border); border-radius: 12px; padding: 40px; width: 100%; max-width: 400px; margin: 24px; }
        .logo { display: flex; align-items: center; gap: 8px; margin-bottom: 32px; }
        .logo svg { width: 24px; height: 24px; stroke: var(--teal); fill: none; stroke-width: 1.5; stroke-linecap: round; stroke-linejoin: round; }
        .logo span { font-family: var(--font-d); font-size: 15px; color: var(--navy); }
        h2 { font-family: var(--font-d); font-size: 28px; color: var(--navy); margin-bottom: 8px; }
        .sub { font-size: 14px; color: var(--muted); margin-bottom: 28px; line-height: 1.5; }
        .field { margin-bottom: 16px; }
        .field label { display: block; font-size: 12px; font-weight: 600; color: var(--navy); letter-spacing: 0.5px; text-transform: uppercase; margin-bottom: 7px; }
        .field input { width: 100%; padding: 12px 15px; border: 1.5px solid var(--border); border-radius: 8px; font-size: 15px; font-family: var(--font-b); background: var(--surface); color: var(--text); transition: border-color 0.15s, box-shadow 0.15s; }
        .field input:focus { outline: none; border-color: var(--teal); box-shadow: 0 0 0 3px rgba(74,155,142,0.14); }
        .btn { width: 100%; padding: 13px; background: var(--teal); color: #fff; border: none; border-radius: 8px; font-size: 15px; font-weight: 600; font-family: var(--font-b); cursor: pointer; margin-top: 4px; transition: background 0.15s; }
        .btn:hover { background: var(--teal-hover); }
        .msg-ok { background: #D1FAE5; border: 1px solid #6EE7B7; color: #065F46; padding: 12px 16px; border-radius: 8px; font-size: 14px; margin-bottom: 20px; line-height: 1.5; }
        .foot { text-align: center; margin-top: 24px; font-size: 13px; color: var(--muted); }
        .foot a { color: var(--teal); text-decoration: none; font-weight: 500; }
        .foot a:hover { text-decoration: underline; }
        [data-theme="dark"] { --bg: #111827; --surface: #1F2937; --border: #374151; --text: #F9FAFB; --muted: #9CA3AF; --navy: #F3F4F6; }