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

body {
    font-family: -apple-system, BlinkMacSystemFont, 'Segoe UI', 'Roboto', 'Helvetica Neue', Arial, 'Noto Sans', sans-serif, 'Apple Color Emoji', 'Segoe UI Emoji', 'Segoe UI Symbol', 'Noto Sans CJK JP';
    background: linear-gradient(135deg, #667eea 0%, #764ba2 100%);
    min-height: 100vh;
    display: flex;
    justify-content: center;
    align-items: center;
    padding: 20px;
    color: #333;
}

.container {
    background: white;
    border-radius: 20px;
    padding: 60px 40px;
    max-width: 700px;
    width: 100%;
    box-shadow: 0 20px 60px rgba(0, 0, 0, 0.3);
    text-align: center;
    animation: fadeIn 0.8s ease-in;
}

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

.icon {
    margin-bottom: 30px;
}

.icon svg {
    width: 80px;
    height: 80px;
    color: #667eea;
    animation: rotate 3s linear infinite;
}

@keyframes rotate {
    0% {
        transform: rotate(0deg);
    }
    25% {
        transform: rotate(10deg);
    }
    50% {
        transform: rotate(0deg);
    }
    75% {
        transform: rotate(-10deg);
    }
    100% {
        transform: rotate(0deg);
    }
}

h1 {
    font-size: 2.5em;
    margin-bottom: 30px;
    color: #2d3748;
    line-height: 1.4;
}

h1 .separator {
    display: none;
}

h1 .ja {
    display: block;
    font-weight: 700;
}

h1 .en {
    display: block;
    font-size: 0.7em;
    font-weight: 600;
    color: #667eea;
}

.message {
    margin-bottom: 40px;
    font-size: 1.1em;
    line-height: 1.8;
    color: #4a5568;
}

.message p {
    margin-bottom: 20px;
}

.message .ja {
    font-weight: 500;
}

.message .en {
    color: #718096;
}

.info {
    padding-top: 30px;
    border-top: 2px solid #e2e8f0;
    font-size: 0.95em;
    color: #718096;
}

.info p {
    margin-bottom: 10px;
}

.info .ja {
    font-weight: 500;
}

/* Responsive Design */
@media (max-width: 768px) {
    .container {
        padding: 40px 25px;
    }

    h1 {
        font-size: 2em;
    }

    .icon svg {
        width: 60px;
        height: 60px;
    }

    .message {
        font-size: 1em;
    }
}

@media (max-width: 480px) {
    .container {
        padding: 30px 20px;
    }

    h1 {
        font-size: 1.6em;
    }

    .icon svg {
        width: 50px;
        height: 50px;
    }

    .message {
        font-size: 0.95em;
    }
}