.about {
    padding: 100px 5%;
    background: var(--bg-secondary);
    position: relative;
    border-top: var(--nb-border-w) solid var(--nb-border);
}

.about-inner { max-width: 1280px; margin: 0 auto; }

.about-grid {
    display: grid;
    grid-template-columns: 1.2fr 1fr;
    gap: var(--space-16);
    align-items: start;
}

.about-content h2 {
    font-size: clamp(1.75rem, 4vw, 2.75rem);
    letter-spacing: -0.03em;
    line-height: 1.05;
    margin-bottom: var(--space-6);
    max-width: 640px;
}

.about-text p {
    color: var(--text-secondary);
    margin-bottom: var(--space-4);
    font-size: var(--fs-base);
    line-height: 1.75;
    max-width: 620px;
}

.about-text strong {
    color: var(--accent-ink);
    font-weight: 700;
    background: var(--accent);
    padding: 1px 6px;
    border-radius: 2px;
    border: 1.5px solid var(--nb-border);
    box-shadow: 1.5px 1.5px 0 var(--nb-shadow);
    display: inline-block;
    transform: rotate(-1deg);
    transition: transform 0.2s ease;
}

.about-text strong:hover {
    transform: rotate(0) scale(1.03);
}

.about-note {
    margin-top: var(--space-8);
    padding: var(--space-5);
    border: var(--nb-border-w) solid var(--nb-border);
    border-left-width: 8px;
    border-left-color: var(--accent-symbol);
    background: var(--bg-primary);
    border-radius: var(--nb-radius);
    box-shadow: 5px 5px 0 var(--nb-shadow);
    font-family: var(--font-mono);
    font-size: var(--fs-sm);
    color: var(--text-secondary);
    line-height: 1.7;
    transform: rotate(-0.8deg);
    transition: transform 0.3s cubic-bezier(0.34, 1.56, 0.64, 1),
                box-shadow 0.25s ease;
}

.about-note:hover {
    transform: rotate(0deg);
    box-shadow: 8px 8px 0 var(--nb-shadow);
}

.about-note::before {
    content: '// note';
    display: inline-block;
    color: var(--accent-ink);
    background: var(--accent);
    font-size: 0.65rem;
    font-weight: 700;
    padding: 3px 9px;
    border: 1.5px solid var(--nb-border);
    border-radius: 2px;
    margin-bottom: 10px;
    letter-spacing: 0.05em;
    box-shadow: 2px 2px 0 var(--nb-shadow);
    transform: rotate(-1.5deg);
}

.timeline {
    display: flex;
    flex-direction: column;
    gap: var(--space-3);
    padding-left: var(--space-6);
    margin-left: 4px;
    position: relative;
}

.timeline::before {
    content: '';
    position: absolute;
    left: 0;
    top: 10px;
    bottom: 10px;
    width: 3px;
    background: var(--nb-border);
    border-radius: 2px;
}

.timeline-item {
    position: relative;
    padding: 14px 16px;
    border: 2px solid var(--nb-border);
    border-radius: var(--nb-radius);
    background: var(--bg-primary);
    box-shadow: 3px 3px 0 var(--nb-shadow);
    transition: transform 0.25s cubic-bezier(0.34, 1.56, 0.64, 1),
                box-shadow 0.25s ease;
}

.timeline-item:hover {
    transform: translate(-2px, -2px);
    box-shadow: 5px 5px 0 var(--nb-shadow);
}

.timeline-item::before {
    content: '';
    position: absolute;
    left: calc(-1 * var(--space-6) - 11px);
    top: 16px;
    width: 14px;
    height: 14px;
    border-radius: 2px;
    background: var(--accent);
    border: 2.5px solid var(--nb-border);
    transform: rotate(45deg);
    box-shadow: 2px 2px 0 var(--nb-shadow);
    transition: transform 0.3s cubic-bezier(0.34, 1.56, 0.64, 1),
                background-color 0.25s ease;
}

.timeline-item:hover::before {
    transform: rotate(135deg) scale(1.15);
    background: var(--accent-symbol);
}

.timeline-year {
    display: inline-block;
    font-family: var(--font-mono);
    font-size: 0.65rem;
    font-weight: 700;
    color: var(--accent-ink);
    background: var(--accent);
    border: 1.5px solid var(--nb-border);
    padding: 2px 8px;
    border-radius: 2px;
    letter-spacing: 0.05em;
    margin-bottom: 8px;
    box-shadow: 1.5px 1.5px 0 var(--nb-shadow);
    transform: rotate(-1deg);
}

.timeline-title {
    font-size: var(--fs-base);
    font-weight: 700;
    color: var(--text-primary);
    margin-bottom: 4px;
    line-height: 1.3;
}

.timeline-desc {
    font-size: var(--fs-sm);
    color: var(--text-secondary);
    line-height: 1.5;
}

@media (max-width: 968px) {
    .about { padding: 70px 5%; }
    .about-grid { grid-template-columns: 1fr; gap: var(--space-10); }
    .about-text p { font-size: 0.9rem; }
    .about-note { transform: rotate(0); }
    .timeline-item:hover { transform: translate(-1px, -1px); }
}