* {
    box-sizing: border-box;
}

body {
    margin: 0;
    min-height: 100vh;
    display: flex;
    align-items: center;
    justify-content: center;
    font-family: Arial, Helvetica, sans-serif;
    background: #f5f5f5;
    color: #202020;
}

.card {
    width: 100%;
    max-width: 420px;
    margin: 24px;
    padding: 42px 36px;
    background: white;
    border: 1px solid #e5e5e5;
    border-radius: 18px;
    box-shadow: 0 10px 30px rgba(0, 0, 0, 0.06);
}

.logo {
    margin: 0 0 8px;
    text-align: center;
    font-size: 34px;
    font-weight: 700;
    letter-spacing: 7px;
}

.subtitle {
    margin: 0 0 34px;
    text-align: center;
    font-size: 14px;
    color: #777;
}

.button {
    display: block;
    width: 100%;
    margin-top: 14px;
    padding: 15px 20px;
    border-radius: 10px;
    text-decoration: none;
    text-align: center;
    font-size: 16px;
    font-weight: 600;
}

.button-primary {
    background: #202020;
    color: white;
}

.button-secondary {
    border: 1px solid #d5d5d5;
    background: white;
    color: #202020;
}

.note {
    margin-top: 30px;
    text-align: center;
    font-size: 13px;
    line-height: 1.5;
    color: #999;
}

label {
    display: block;
    margin: 18px 0 7px;
    font-size: 13px;
    font-weight: 600;
}

input {
    width: 100%;
    padding: 14px 15px;
    border: 1px solid #d5d5d5;
    border-radius: 9px;
    font-size: 16px;
    outline: none;
}

input:focus {
    border-color: #555;
}

.hint {
    margin-top: 6px;
    font-size: 12px;
    line-height: 1.4;
    color: #999;
}

button {
    width: 100%;
    margin-top: 28px;
    padding: 15px 20px;
    border: 0;
    border-radius: 10px;
    background: #202020;
    color: white;
    font-size: 15px;
    font-weight: 600;
    cursor: pointer;
}

.back {
    display: block;
    margin-top: 22px;
    text-align: center;
    color: #888;
    text-decoration: none;
    font-size: 13px;
}

@media (max-width: 480px) {
    .card {
        margin: 16px;
        padding: 36px 24px;
    }

    .logo {
        font-size: 30px;
    }
}