* { box-sizing: border-box; }
        body {
            margin: 0;
            min-height: 100vh;
            font-family: Pretendard, sans-serif;
            color: #111827;
            background:
                radial-gradient(circle at 20% 10%, rgba(168, 85, 247, .22), transparent 30%),
                radial-gradient(circle at 85% 20%, rgba(236, 72, 153, .18), transparent 28%),
                #f8fafc;
        }
        .wrap {
            min-height: 100vh;
            display: flex;
            align-items: center;
            justify-content: center;
            padding: 32px 16px;
        }
        .card {
            width: 100%;
            max-width: 430px;
            background: #fff;
            border: 1px solid #e5e7eb;
            border-radius: 18px;
            box-shadow: 0 24px 70px rgba(15, 23, 42, .14);
            overflow: hidden;
        }
        .head {
            padding: 30px 30px 20px;
            text-align: center;
        }
        .logo {
            width: 128px;
            height: auto;
            margin-bottom: 18px;
        }
        h1 {
            margin: 0;
            font-size: 25px;
            font-weight: 900;
        }
        .desc {
            margin: 9px 0 0;
            color: #6b7280;
            font-size: 14px;
            line-height: 1.55;
        }
        .tabs {
            display: grid;
            grid-template-columns: 1fr 1fr;
            padding: 0 30px;
            gap: 8px;
        }
        .tab {
            height: 42px;
            border-radius: 999px;
            display: flex;
            align-items: center;
            justify-content: center;
            text-decoration: none;
            color: #6b7280;
            background: #f3f4f6;
            font-size: 14px;
            font-weight: 800;
        }
        .tab.active {
            color: #fff;
            background: linear-gradient(135deg, #7c3aed, #db2777);
        }
        form {
            padding: 24px 30px 30px;
        }
        label {
            display: block;
            margin-bottom: 14px;
            color: #374151;
            font-size: 13px;
            font-weight: 800;
        }
        input {
            width: 100%;
            height: 48px;
            margin-top: 7px;
            padding: 0 14px;
            border: 1px solid #d1d5db;
            border-radius: 10px;
            font: inherit;
            outline: none;
        }
        input:focus {
            border-color: #a855f7;
            box-shadow: 0 0 0 4px rgba(168, 85, 247, .12);
        }
        .error {
            margin-bottom: 16px;
            padding: 12px 13px;
            border-radius: 10px;
            background: #fef2f2;
            color: #dc2626;
            font-size: 13px;
            font-weight: 700;
            line-height: 1.45;
        }
        .submit {
            width: 100%;
            height: 50px;
            border: 0;
            border-radius: 12px;
            background: #111827;
            color: #fff;
            font-size: 15px;
            font-weight: 900;
            cursor: pointer;
        }
        .submit:hover {
            background: #1f2937;
        }
        .foot {
            padding: 0 30px 28px;
            text-align: center;
        }
        .foot a {
            color: #6d28d9;
            font-size: 13px;
            font-weight: 800;
            text-decoration: none;
        }