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

body {
    font-family: 'Noto Sans JP', sans-serif;
    background: #0a0a0a;
    color: #e0e0e0;
    line-height: 1.7;
}

.container {
    max-width: 1200px;
    margin: 0 auto;
    padding: 0 2rem;
}

.header {
    position: fixed;
    top: 0;
    width: 100%;
    background: rgba(10, 10, 10, 0.95);
    backdrop-filter: blur(10px);
    z-index: 1000;
    border-bottom: 1px solid rgba(255,255,255,0.1);
}

.header-inner {
    max-width: 1200px;
    margin: 0 auto;
    padding: 1.5rem 2rem;
    display: flex;
    justify-content: space-between;
    align-items: center;
}

.logo {
    font-size: 1.8rem;
    font-weight: bold;
    background: linear-gradient(135deg, #667eea 0%, #764ba2 100%);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
}

.header nav {
    display: flex;
    gap: 2rem;
}

.header nav a {
    color: #e0e0e0;
    text-decoration: none;
    transition: color 0.3s;
    position: relative;
}

.header nav a:hover {
    color: #667eea;
}

.header nav a::after {
    content: '';
    position: absolute;
    bottom: -5px;
    left: 0;
    width: 0;
    height: 2px;
    background: #667eea;
    transition: width 0.3s;
}

.header nav a:hover::after {
    width: 100%;
}

.intro-section {
    margin-top: 80px;
    height: 90vh;
    background: linear-gradient(rgba(0,0,0,0.6), rgba(0,0,0,0.6)),
                url('../image/hero.jpg') center/cover;
    display: flex;
    align-items: center;
    justify-content: center;
    text-align: center;
    color: white;
}

.intro-content h2 {
    font-size: 4.5rem;
    margin-bottom: 1.5rem;
    text-shadow: 0 0 30px rgba(102, 126, 234, 0.5);
    animation: glow 2s ease-in-out infinite alternate;
}

.intro-content p {
    font-size: 1.8rem;
    opacity: 0.9;
}

@keyframes glow {
    from {
        text-shadow: 0 0 20px rgba(102, 126, 234, 0.5);
    }
    to {
        text-shadow: 0 0 40px rgba(102, 126, 234, 0.8), 0 0 60px rgba(118, 75, 162, 0.5);
    }
}

.timeline-section {
    padding: 8rem 0;
    background: #0f0f0f;
}

.section-title {
    font-size: 3rem;
    text-align: center;
    margin-bottom: 5rem;
    background: linear-gradient(135deg, #667eea 0%, #764ba2 100%);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
}

.timeline {
    position: relative;
    padding: 2rem 0;
}

.timeline::before {
    content: '';
    position: absolute;
    left: 50%;
    top: 0;
    bottom: 0;
    width: 3px;
    background: linear-gradient(180deg, #667eea 0%, #764ba2 100%);
    transform: translateX(-50%);
}

.timeline-item {
    position: relative;
    margin-bottom: 6rem;
    display: flex;
    align-items: center;
}

.timeline-item:nth-child(odd) {
    flex-direction: row;
}

.timeline-item:nth-child(even) {
    flex-direction: row-reverse;
}

.timeline-marker {
    position: absolute;
    left: 50%;
    width: 20px;
    height: 20px;
    background: #667eea;
    border: 4px solid #0f0f0f;
    border-radius: 50%;
    transform: translateX(-50%);
    z-index: 10;
    box-shadow: 0 0 20px rgba(102, 126, 234, 0.6);
}

.timeline-content {
    width: 45%;
    background: #1a1a1a;
    border-radius: 15px;
    padding: 2.5rem;
    border: 1px solid rgba(102, 126, 234, 0.3);
    box-shadow: 0 10px 40px rgba(0,0,0,0.5);
    transition: transform 0.3s, box-shadow 0.3s;
}

.timeline-content:hover {
    transform: translateY(-5px);
    box-shadow: 0 15px 50px rgba(102, 126, 234, 0.3);
}

.timeline-time {
    display: inline-block;
    padding: 0.5rem 1.2rem;
    background: linear-gradient(135deg, #667eea 0%, #764ba2 100%);
    color: white;
    border-radius: 25px;
    font-weight: bold;
    margin-bottom: 1.5rem;
}

.timeline-content h3 {
    font-size: 2rem;
    margin-bottom: 1.5rem;
    color: #e0e0e0;
}

.timeline-content img {
    width: 100%;
    height: 250px;
    object-fit: cover;
    border-radius: 10px;
    margin-bottom: 1.5rem;
}

.timeline-content p {
    color: #b0b0b0;
    line-height: 1.8;
    font-size: 1.05rem;
}

.highlights {
    padding: 6rem 0;
    background: #0a0a0a;
}

.highlights h2 {
    font-size: 3rem;
    text-align: center;
    margin-bottom: 4rem;
    background: linear-gradient(135deg, #667eea 0%, #764ba2 100%);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
}

.highlights-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(250px, 1fr));
    gap: 2rem;
}

.highlight-card {
    background: #1a1a1a;
    padding: 2.5rem;
    border-radius: 15px;
    text-align: center;
    border: 1px solid rgba(102, 126, 234, 0.2);
    transition: transform 0.3s, border-color 0.3s;
}

.highlight-card:hover {
    transform: translateY(-5px);
    border-color: #667eea;
}

.icon {
    font-size: 3rem;
    margin-bottom: 1.5rem;
}

.highlight-card h3 {
    font-size: 1.5rem;
    margin-bottom: 1rem;
    color: #e0e0e0;
}

.highlight-card p {
    color: #b0b0b0;
    line-height: 1.6;
}

.contact-section {
    padding: 6rem 0;
    background: #0f0f0f;
}

.contact-section h2 {
    font-size: 3rem;
    text-align: center;
    margin-bottom: 4rem;
    background: linear-gradient(135deg, #667eea 0%, #764ba2 100%);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
}

.contact-info {
    max-width: 700px;
    margin: 0 auto;
}

.info-box {
    background: #1a1a1a;
    padding: 3rem;
    border-radius: 15px;
    border: 1px solid rgba(102, 126, 234, 0.3);
    text-align: center;
}

.info-box h3 {
    font-size: 1.8rem;
    margin-bottom: 2rem;
    color: #e0e0e0;
}

.info-box p {
    font-size: 1.1rem;
    margin-bottom: 1.5rem;
    color: #b0b0b0;
    line-height: 1.8;
}

.info-box strong {
    color: #667eea;
}

footer {
    background: #0a0a0a;
    text-align: center;
    padding: 3rem 0;
    border-top: 1px solid rgba(255,255,255,0.1);
}

.privacy-link {
    color: rgba(255,255,255,0.6);
    text-decoration: underline;
}

.privacy-link:hover {
    color: #667eea;
}

@media (max-width: 968px) {
    .timeline::before {
        left: 30px;
    }

    .timeline-item {
        flex-direction: column !important;
        padding-left: 60px;
    }

    .timeline-marker {
        left: 30px;
    }

    .timeline-content {
        width: 100%;
    }

    .intro-content h2 {
        font-size: 2.5rem;
    }
}