.about-header {
    text-align: left;
    padding-bottom: 40px;
    margin-bottom: 60px;
    border-bottom: 1px solid var(--glass-border);
}

.about-header h1 {
    font-size: 3rem;
    margin-bottom: 16px;
    background: linear-gradient(135deg, #fff 0%, #94a3b8 100%);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
}

.about-header p {
    color: var(--accent-cyan);
    font-family: var(--font-en);
    letter-spacing: 0.05em;
    font-size: 1.1rem;
}

.about-section {
    margin-bottom: 80px;
}

.about-section h2 {
    font-size: 1.8rem;
    margin-bottom: 32px;
    color: var(--text-main);
    display: flex;
    align-items: center;
    gap: 16px;
    padding-left: 16px;
    border-left: 4px solid var(--accent-cyan);
}

.content-card {
    background: rgba(255, 255, 255, 0.02);
    border: 1px solid var(--glass-border);
    border-radius: 20px;
    padding: 32px;
}

.about-section p {
    color: var(--text-sub);
    margin-bottom: 24px;
    line-height: 1.9;
    font-size: 1.05rem;
}

.about-section ul {
    list-style: none;
    margin-bottom: 24px;
    background: rgba(15, 23, 42, 0.4);
    padding: 24px;
    border-radius: 12px;
    border: 1px solid var(--glass-border);
}

.about-section li {
    margin-bottom: 12px;
    padding-left: 20px;
    position: relative;
    color: var(--text-main);
}

.about-section li::before {
    content: '>';
    position: absolute;
    left: 0;
    color: var(--accent-cyan);
    font-family: var(--font-en);
    font-weight: 700;
}

.about-section h3 {
    color: var(--accent-cyan);
    margin-bottom: 16px;
    margin-top: 32px;
    font-size: 1.3rem;
    font-family: var(--font-jp);
}

.about-section h3:first-of-type {
    margin-top: 0;
}

.wide-content {
    margin-left: -20px;
    margin-right: -20px;
    width: calc(100% + 40px);
}

.contact-box {
    background: linear-gradient(135deg, rgba(15, 23, 42, 0.9), rgba(15, 23, 42, 0.7));
    border: 1px solid var(--glass-border);
    border-radius: 24px;
    padding: 60px 48px;
    margin-top: 80px;
    position: relative;
    overflow: hidden;
    margin-bottom: 80px;
}

.contact-box::before {
    content: '';
    position: absolute;
    top: 0; left: 0; width: 4px; height: 100%;
    background: var(--accent-cyan);
    box-shadow: 0 0 15px var(--accent-cyan);
}

.contact-box h3 {
    font-family: var(--font-en);
    color: var(--text-main);
    margin-bottom: 24px;
    display: flex;
    align-items: center;
    gap: 12px;
    font-size: 1.4rem;
}

.contact-box h3 i {
    color: var(--accent-cyan);
}

.contact-links-wrapper {
    display: flex;
    gap: 20px;
    margin-top: 32px;
    flex-wrap: wrap;
}

.contact-button {
    display: inline-flex;
    align-items: center;
    gap: 10px;
    padding: 16px 32px;
    background: rgba(0, 243, 255, 0.1);
    border: 1px solid var(--accent-cyan);
    border-radius: 12px;
    color: var(--accent-cyan);
    font-weight: 600;
    font-family: var(--font-en);
    transition: all 0.3s;
}

.contact-button:hover {
    background: var(--accent-cyan);
    color: #000;
    box-shadow: 0 0 20px rgba(0, 243, 255, 0.3);
}

.contact-button.outline {
    background: transparent;
    border: 1px solid var(--glass-border);
    color: var(--text-main);
}

.contact-button.outline:hover {
    border-color: var(--accent-cyan);
    color: var(--accent-cyan);
    background: rgba(0, 243, 255, 0.05);
}

.history-card ul {
    background: transparent;
    border: none;
    padding: 0;
    margin: 0;
}

.history-card li {
    display: flex;
    align-items: baseline;
    gap: 16px;
    padding: 16px 0;
    border-bottom: 1px solid var(--glass-border);
    margin: 0;
}

.history-card li:last-child {
    border-bottom: none;
}

.history-card li::before {
    content: none;
}

.history-card .date {
    font-family: var(--font-en);
    color: var(--text-sub);
    min-width: 100px;
}

.history-card .tag {
    font-size: 0.75rem;
    padding: 4px 10px;
    border-radius: 20px;
    background: rgba(0, 243, 255, 0.1);
    color: var(--accent-cyan);
    font-weight: 600;
}

@media (max-width: 768px) {
    .wide-content {
        margin-left: 0;
        margin-right: 0;
        width: 100%;
    }
    
    .contact-box {
        padding: 32px;
    }

    .contact-links-wrapper {
        flex-direction: column;
    }
    
    .contact-button {
        width: 100%;
        justify-content: center;
    }
    
    .history-card li {
        flex-direction: column;
        gap: 8px;
    }
}