.ta-learn {
    max-width: 800px;
    margin: 0 auto;
    padding: 2rem 0;
}

/* Header */
.ta-learn__header {
    text-align: center;
    margin-bottom: 3rem;
}

.ta-learn__header h1 {
    margin: 0 0 1rem;
    font-size: 1.8rem;
    color: var(--text-primary);
}

.ta-learn__lead {
    margin: 0 auto;
    max-width: 640px;
    font-size: 1.05rem;
    line-height: 1.8;
    color: var(--text-secondary);
}

/* Origin story */
.ta-learn__section-title {
    font-size: 0.85rem;
    font-weight: 600;
    text-transform: uppercase;
    letter-spacing: 0.08em;
    color: var(--accent);
    margin: 0 0 1rem;
    padding-bottom: 0.4rem;
    border-bottom: 1px solid var(--border);
}

.ta-learn__story {
    margin-bottom: 2.5rem;
}

.ta-learn__story p {
    margin: 0 0 1rem;
    font-size: 0.97rem;
    line-height: 1.8;
    color: var(--text-secondary);
}

.ta-learn__story p:last-child {
    margin-bottom: 0;
}

.ta-learn__story strong {
    color: var(--text-primary);
    font-weight: 600;
}

/* Languages evolution */
.ta-learn__evolution {
    display: flex;
    flex-wrap: wrap;
    align-items: center;
    gap: 0.5rem;
    margin: 0 0 2.5rem;
}

.ta-learn__lang {
    padding: 0.4rem 0.9rem;
    background: var(--bg-card);
    border: 1px solid var(--border);
    border-radius: var(--radius-sm);
    font-size: 0.9rem;
    color: var(--text-secondary);
}

.ta-learn__sep {
    color: var(--accent);
    font-weight: 700;
}

/* Roadmap timeline */
.ta-learn__roadmap {
    position: relative;
    display: flex;
    flex-direction: column;
    gap: 1.5rem;
}

/* Vertical connecting line */
.ta-learn__roadmap::before {
    content: '';
    position: absolute;
    left: 23px;
    top: 12px;
    bottom: 12px;
    width: 2px;
    background: linear-gradient(
            to bottom,
            var(--accent) 0%,
            var(--border) 100%
    );
}

.ta-learn__stage {
    position: relative;
    display: flex;
    gap: 1.25rem;
    align-items: flex-start;
}

/* Numbered marker */
.ta-learn__marker {
    position: relative;
    z-index: 1;
    flex-shrink: 0;
    width: 48px;
    height: 48px;
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 0.78rem;
    font-weight: 700;
    color: var(--accent);
    background: var(--bg-secondary);
    border: 2px solid var(--accent);
    box-shadow: 0 0 16px var(--accent-glow);
}

/* Stage card */
.ta-learn__body {
    flex: 1;
    padding: 1.25rem 1.5rem;
    background: var(--bg-card);
    border: 1px solid var(--border);
    border-radius: var(--radius);
    transition: var(--transition);
}

.ta-learn__level {
    display: inline-block;
    font-size: 0.7rem;
    font-weight: 600;
    text-transform: uppercase;
    letter-spacing: 0.08em;
    color: var(--text-muted);
    margin-bottom: 0.35rem;
}

.ta-learn__body h2 {
    margin: 0 0 0.5rem;
    font-size: 1.2rem;
    color: var(--text-primary);
}

.ta-learn__body > p {
    margin: 0 0 1rem;
    font-size: 0.92rem;
    line-height: 1.65;
    color: var(--text-secondary);
}

/* Topic chips */
.ta-learn__topics {
    display: flex;
    flex-wrap: wrap;
    gap: 0.5rem;
    list-style: none;
    margin: 0;
    padding: 0;
}

.ta-learn__topics > li {
    padding: 0.35rem 0.8rem;
    background: var(--bg-secondary);
    border: 1px solid var(--border);
    border-radius: var(--radius-sm);
    font-size: 0.85rem;
    color: var(--text-secondary);
}

/* Footer */
.ta-learn__footer {
    margin-top: 3rem;
    padding: 1.5rem;
    text-align: center;
    background: var(--bg-card);
    border: 1px solid var(--border);
    border-radius: var(--radius);
}

.ta-learn__footer p {
    margin: 0;
    font-size: 0.95rem;
    line-height: 1.7;
    color: var(--text-secondary);
}

.ta-learn__footer a {
    color: var(--accent);
    text-decoration: none;
    transition: var(--transition);
}

.ta-learn__footer a:hover {
    text-decoration: underline;
}

/* Desktop */
@media (min-width: 769px) {
    .ta-learn {
        padding: 3rem 0;
    }

    .ta-learn__body:hover {
        border-color: var(--accent);
        box-shadow: 0 0 12px var(--accent-glow);
    }
}