.timeline {
    position: relative;
    padding-left: 1.5rem;
}

.timeline::before {
    content: '';
    position: absolute;
    left: 0;
    top: 6px;
    bottom: 6px;
    width: 1px;
    background-color: var(--border-strong);
    opacity: 0.5;
}

.timeline-item {
    position: relative;
    display: flex;
    gap: 1.2rem;
    padding-bottom: 1.8rem;
}

.timeline-item:last-child {
    padding-bottom: 0;
}

.timeline-item::before {
    content: '';
    position: absolute;
    left: -1.83rem;
    top: 6px;
    width: 8px;
    height: 8px;
    background-color: var(--gold);
    border-radius: 50%;
}

.timeline-year {
    font-family: var(--font-display);
    font-size: 0.7rem;
    font-weight: 700;
    letter-spacing: 0.08em;
    color: var(--gold);
    white-space: nowrap;
    padding-top: 2px;
    min-width: 72px;
}

.timeline-title {
    font-family: var(--font-display);
    font-size: 0.9rem;
    font-weight: 700;
    color: var(--cream);
    margin-bottom: 0.2rem;
}

.timeline-desc {
    font-size: 0.88rem;
    color: var(--cream-muted);
    line-height: 1.6;
    margin: 0;
}

.formula-eq {
    font-family: var(--font-display);
    font-size: clamp(1rem, 2.5vw, 1.25rem);
    color: var(--cream);
    letter-spacing: 0.04em;
    margin: 0;
}

.formula-mod {
    color: var(--gold);
    font-style: italic;
}

.math-row td {
    padding: 0.4rem 0;
    border-bottom: 1px solid var(--border);
    font-size: 0.88rem;
    vertical-align: middle;
}

.math-row:last-child td {
    border-bottom: none;
}

.math-orig {
    font-family: var(--font-display);
    font-weight: 700;
    color: var(--cream);
    min-width: 60px;
}

.math-op {
    color: var(--cream-muted);
    font-style: italic;
    padding: 0 0.5rem;
}

.math-res {
    font-family: var(--font-display);
    font-weight: 700;
    color: var(--gold);
    text-align: right;
}

.tech-badge {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    width: 52px;
    height: 52px;
    border-radius: 3px;
    font-family: var(--font-display);
    font-size: 0.75rem;
    font-weight: 900;
    letter-spacing: 0.04em;
    border: 1px solid;
    margin: 0 auto;
}

.tech-badge--html {
    background: rgba(227, 76, 38, 0.1);
    color: #e34c26;
    border-color: rgba(227, 76, 38, 0.3);
}

.tech-badge--css {
    background: rgba(21, 114, 182, 0.1);
    color: #1572b6;
    border-color: rgba(21, 114, 182, 0.3);
}

.tech-badge--js {
    background: rgba(240, 219, 79, 0.1);
    color: #d4b800;
    border-color: rgba(240, 219, 79, 0.3);
}

.tech-badge--bs {
    background: rgba(123, 31, 162, 0.1);
    color: #7952b3;
    border-color: rgba(123, 31, 162, 0.3);
}

.tech-name {
    font-family: var(--font-display);
    font-size: 0.95rem;
    font-weight: 700;
    color: var(--cream);
    margin-bottom: 0.4rem;
}

.tech-desc {
    font-size: 0.85rem;
    color: var(--cream-muted);
    line-height: 1.6;
    margin: 0;
}

.page-link-card {
    display: flex;
    align-items: flex-start;
    gap: 1rem;
    background-color: var(--bg-card);
    border: 1px solid var(--border);
    border-radius: 3px;
    padding: 1rem 1.2rem;
    text-decoration: none;
    transition: border-color 0.2s, background-color 0.2s;
    height: 100%;
}

.page-link-card:hover {
    border-color: var(--gold-dim);
    background-color: var(--bg-card-hover);
}

.page-link-card--active {
    border-color: var(--gold-dim);
    background-color: rgba(201, 168, 76, 0.05);
}

.page-link-num {
    font-family: var(--font-display);
    font-size: 1.2rem;
    font-weight: 900;
    color: var(--gold);
    opacity: 0.3;
    line-height: 1;
    flex-shrink: 0;
}

.page-link-name {
    font-family: var(--font-display);
    font-size: 0.82rem;
    font-weight: 700;
    letter-spacing: 0.06em;
    color: var(--cream);
    display: block;
    margin-bottom: 0.2rem;
}

.page-link-desc {
    font-size: 0.8rem;
    color: var(--cream-muted);
    font-style: italic;
    display: block;
}