* {
    margin: 0;
    padding: 0;
    box-sizing: border-box;
}

body {
    font-family: -apple-system, BlinkMacSystemFont, 'Segoe UI', 'Inter', Arial, sans-serif;
    background: linear-gradient(135deg, #fafafa 0%, #f5f5f5 100%);
    color: #1a1a1a;
    line-height: 1.5;
    -webkit-font-smoothing: antialiased;
    display: flex;
    flex-direction: column;
    min-height: 100vh;
}

header {
    padding: 2rem 3rem;
    background: #fff;
    border-bottom: 1px solid #e5e5e5;
}

.logo {
    font-size: 1.125rem;
    font-weight: 600;
    letter-spacing: -0.01em;
    color: #0a0a0a;
}

.logo span {
    color: #4f46e5;
    font-weight: 400;
}

main {
    flex: 1;
    display: flex;
    align-items: center;
    justify-content: center;
    padding: 3rem;
}

.content {
    text-align: center;
    max-width: 650px;
    animation: fadeIn 0.8s ease-out;
}

@keyframes fadeIn {
    from {
        opacity: 0;
        transform: translateY(20px);
    }

    to {
        opacity: 1;
        transform: translateY(0);
    }
}

h1 {
    font-size: 3.5rem;
    font-weight: 600;
    color: #0a0a0a;
    letter-spacing: -0.03em;
    line-height: 1.1;
    margin-bottom: 1.5rem;
}

h1::after {
    content: '';
    display: block;
    width: 60px;
    height: 4px;
    background: linear-gradient(90deg, #4f46e5 0%, #7c3aed 100%);
    margin: 1.5rem auto 0;
    border-radius: 2px;
}

.subtitle {
    font-size: 1.125rem;
    color: #737373;
    font-weight: 400;
    line-height: 1.6;
    margin-bottom: 0.5rem;
}

.notice {
    font-size: 0.9375rem;
    color: #a3a3a3;
    font-weight: 400;
    margin-top: 3rem;
}

footer {
    text-align: center;
    padding: 2rem 3rem;
    color: #a3a3a3;
    font-size: 0.875rem;
    border-top: 1px solid #e5e5e5;
}

@media (max-width: 768px) {
    h1 {
        font-size: 2rem;
    }

    .subtitle {
        font-size: 1rem;
    }

    header {
        padding: 1.5rem 2rem;
    }

    main {
        padding: 2rem;
    }

    footer {
        font-size: 0.8125rem;
    }
}