:root {
    --color-primary: #E53935;
    --color-text: #3D3D3D;
    --color-background: #F5F5F5;
    --color-gray: #9A9A9A;
    --color-light-gray: #696969;
}

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

body {
    font-family: Arial, sans-serif;
    background: var(--color-background);
    min-height: 100vh;
    display: flex;
    justify-content: center;
    align-items: center;
    padding: 20px 0;
}

.container {
    width: 100%;
    max-width: 1200px;
    padding: 56px 0 32px;
    margin: 0;
    display: flex;
    flex-direction: column;
    align-items: center;
    gap: 40px;
    position: relative;
}

.content-box {
    width: calc(100% - 48px);
    max-width: 1000px;
    padding: 48px;
    background: white;
    border-radius: 24px;
    display: flex;
    flex-direction: column;
    align-items: center;
    gap: 32px;
    margin: 0 24px;
}

.title {
    color: var(--color-primary);
    font-size: clamp(24px, 5vw, 40px);
    font-weight: 700;
    text-align: center;
    animation: fadeIn 0.2s ease-out forwards;
}

.subtitle {
    color: var(--color-text);
    font-size: clamp(18px, 3vw, 24px);
    font-weight: 400;
    text-align: center;
    animation: fadeIn 0.2s ease-out 0.1s forwards;
    opacity: 0;
}

@keyframes fadeIn {
    from {
        opacity: 0;
        transform: translateY(20px);
    }
    to {
        opacity: 1;
        transform: translateY(0);
    }
}

.illustration {
    width: 100%;
    max-width: 367.66px;
    height: 373.15px;
    position: relative;
    overflow: hidden;
    animation: fadeIn 0.2s ease-out 0.2s forwards;
    opacity: 0;
}

.why-section {
    width: 100%;
    display: flex;
    flex-direction: column;
    gap: 16px;
}

.why-title {
    color: var(--color-text);
    font-size: 18px;
    font-weight: 700;
    text-align: center;
    animation: fadeIn 0.2s ease-out 0.3s forwards;
    opacity: 0;
}

.reasons {
    display: flex;
    flex-direction: column;
    gap: 12px;
    max-width: 800px;
    margin: 0 auto;
    padding-left: 20px;
    animation: fadeIn 0.2s ease-out 0.4s forwards;
    opacity: 0;
}

.reason-item {
    color: var(--color-text);
    font-size: 14px;
    position: relative;
    padding-left: 16px;
    white-space: nowrap;
}

.reason-item::before {
    content: "•";
    position: absolute;
    left: 0;
    color: var(--color-primary);
}

.footer {
    width: 100%;
    padding: 0;
    display: flex;
    justify-content: space-between;
    align-items: flex-end;
    flex-wrap: wrap;
    gap: 24px;
    position: relative;
}

.footer-content {
    flex: 1;
    min-width: 300px;
    display: flex;
    flex-direction: column;
    gap: 16px;
    margin: 0 auto;
    padding: 0 24px;
    animation: fadeIn 0.2s ease-out 0.5s forwards;
    opacity: 0;
}

.footer-text {
    color: var(--color-text);
    font-size: 14px;
    text-align: center;
}

.footer-link {
    text-decoration: underline;
    color: var(--color-gray);
}

.copyright {
    color: var(--color-light-gray);
    font-size: 14px;
    text-align: center;
}

.powered-by {
    display: flex;
    align-items: center;
    gap: 4px;
    position: fixed;
    right: 16px;
    bottom: 32px;
    animation: fadeIn 0.2s ease-out 0.6s forwards;
    opacity: 0;
}

.powered-by-text {
    color: var(--color-text);
    font-size: 12px;
    font-weight: 500;
}

.logo {
    width: 63px;
    height: 25px;
    object-fit: contain;
}

.title-section {
    display: flex;
    flex-direction: column;
    gap: 20px;
    align-items: center;
}

@media (max-width: 768px) {
    .container {
        margin: 0;
        padding-bottom: 40px;
    }

    .content-box {
        padding: 24px 16px;
        gap: 24px;
        border-radius: 16px;
        width: calc(100% - 24px);
        margin: 0 12px;
    }
    
    .title {
        font-size: 28px;
    }
    
    .subtitle {
        font-size: 16px;
    }
    
    .illustration {
        max-width: 280px;
        height: 280px;
    }
    
    .why-section {
        gap: 12px;
    }
    
    .why-title {
        font-size: 16px;
    }
    
    .reasons {
        padding: 0 16px;
    }
    
    .reason-item {
        white-space: normal;
        line-height: 1.4;
        padding-left: 12px;
        font-size: 13px;
    }
    
    .footer {
        flex-direction: column;
        align-items: center;
        padding-bottom: 40px;
    }
    
    .footer-content {
        text-align: center;
        min-width: auto;
        width: 100%;
        gap: 12px;
    }

    .footer-text {
        font-size: 13px;
    }

    .copyright {
        font-size: 12px;
    }

    .powered-by {
        position: static;
        margin-top: 16px;
        justify-content: center;
        width: 100%;
    }
}

@media (max-width: 480px) {
    body {
        padding: 12px 0;
    }

    .container {
        padding: 16px 0 12px;
    }

    .content-box {
        padding: 20px 12px;
        gap: 20px;
    }
    
    .title {
        font-size: 24px;
    }
    
    .subtitle {
        font-size: 14px;
    }
    
    .illustration {
        max-width: 240px;
        height: 240px;
    }

    .reason-item {
        font-size: 12px;
    }

    .powered-by {
        margin-top: 12px;
    }
    
    .powered-by-text {
        font-size: 11px;
    }
    
    .logo {
        width: 56px;
        height: 22px;
    }
}