.about-image {
    flex-shrink: 0;
    width: clamp(18.75rem, -7.328rem + 43.1vw, 25rem);
    height: clamp(18.75rem, -7.328rem + 43.1vw, 25rem);
    position: relative;
    overflow: visible;
}

.about-content {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 4rem;
    margin-top: 3rem;
}

.about-text {
    display: flex;
    flex-direction: column;
    gap: 1.5rem;
}

.about-subtitle {
    font-size: 1.5rem;
    color: var(--accent-primary);
    letter-spacing: 3px;
    margin-bottom: 0.5rem;
    transition: color var(--transition-speed) var(--transition-easing);
}

.about-highlights {
    display: flex;
    flex-direction: column;
    gap: 1.5rem;
}

.about-stats {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: 2rem;
    margin-top: 4rem;
    padding: 1.5rem 0;
    max-width: 1000px;
    margin-left: auto;
    margin-right: auto;
}

.stat-item {
    text-align: center;
    padding: 1rem;
    position: relative;
}

.stat-item::after {
    content: '';
    position: absolute;
    bottom: 0;
    left: 50%;
    transform: translateX(-50%);
    width: 30px;
    height: 2px;
    background: var(--accent-gradient);
    transition: background var(--transition-speed) var(--transition-easing);
}

.stat-number {
    font-size: 2.5rem;
    font-weight: bold;
    color: var(--accent-primary);
    letter-spacing: 2px;
    text-shadow: 0 0 20px var(--shadow-color), 0 0 40px var(--glow-color);
    transition: color var(--transition-speed) var(--transition-easing),
                text-shadow var(--transition-speed) var(--transition-easing);
}

.stat-label {
    font-size: 0.8rem;
    color: var(--text-tertiary);
    text-transform: uppercase;
    letter-spacing: 1px;
    margin-top: 0.5rem;
    transition: color var(--transition-speed) var(--transition-easing);
}

/* ========== プロフィールセクション ========== */
.profile-section-title {
    font-size: 1.8rem;
    color: var(--accent-primary);
    letter-spacing: 3px;
    margin: 4rem 0 3rem 0;
    text-transform: uppercase;
    text-align: center;
    transition: color var(--transition-speed) var(--transition-easing);
}

.profile-container {
    max-width: 900px;
    margin: 0 auto;
    background: transparent;
    border-left: 3px solid var(--accent-primary);
    padding: 0;
    overflow: hidden;
    transition: border-color var(--transition-speed) var(--transition-easing);
}

.profile-row {
    display: grid;
    grid-template-columns: 200px 1fr;
    padding: 1.25rem 2rem;
    border-radius: 0 4px 4px 0;
    transition: background 0.2s ease;
}

.profile-row:hover {
    background: var(--glow-color);
}

.profile-key {
    font-size: 0.85rem;
    font-weight: 600;
    color: var(--accent-primary);
    letter-spacing: 2px;
    text-transform: uppercase;
    display: flex;
    align-items: center;
    transition: color var(--transition-speed) var(--transition-easing);
}

.profile-key::before {
    content: '▸';
    margin-right: 0.5rem;
    font-size: 1rem;
}

.profile-value {
    font-size: 1.1rem;
    color: var(--text-primary);
    display: flex;
    align-items: center;
    font-family: 'Courier New', monospace;
    letter-spacing: 0.5px;
    transition: color var(--transition-speed) var(--transition-easing);
}

/* プロフィールリンク */
.profile-links {
    display: flex;
    flex-wrap: wrap;
    gap: 1rem;
}

.profile-link {
    display: inline-flex;
    align-items: center;
    gap: 0.4rem;
    padding: 0.5rem 1rem;
    background: var(--glow-color);
    border: 1px solid var(--border-color);
    color: var(--text-primary);
    text-decoration: none;
    font-family: Arial, sans-serif;
    font-size: 0.95rem;
    transition: all 0.3s ease;
}

.profile-link:hover {
    background: var(--accent-primary);
    color: white;
    border-color: var(--accent-primary);
    transform: translateY(-2px);
}

.link-icon {
    width: 18px;
    height: 18px;
    margin-right: 6px;
    vertical-align: middle;
    filter: var(--skill-icon-only-filter1);
    transition: transform 0.3s ease, filter var(--transition-speed) var(--transition-easing);
}

/* ========== ハイライトカード（枠線なし） ========== */
.highlight-card {
    background: transparent !important;
    border: none !important;
    border-left: 3px solid var(--accent-primary) !important;
    padding: 1rem 0 1rem 1.5rem;
    transition: border-color var(--transition-speed) var(--transition-easing),
                transform 0.3s ease !important;
}

.highlight-card:hover {
    background: var(--glow-color) !important;
    transform: translateX(6px) !important;
    border-left-color: var(--accent-secondary) !important;
}


@media (max-width: 768px) {
    .profile-container {
        border-left-width: 3px;
    }

    .profile-row {
        grid-template-columns: 1fr;
        gap: 0.5rem;
        padding: 1rem 1.5rem;
    }

    .profile-key {
        font-size: 0.75rem;
    }

    .profile-value {
        font-size: 1rem;
        padding-left: 1rem;
    }

    .profile-links {
        flex-direction: column;
        gap: 0.75rem;
    }

    .profile-link {
        width: 100%;
        justify-content: center;
    }
}

@media (max-width: 480px) {
    .profile-row {
        padding: 0.875rem 1rem;
    }

    .profile-section-title {
        font-size: 1.5rem;
        letter-spacing: 2px;
    }
}