.page-hero {
    padding: 2.5rem 0 0;
    max-width: 44rem;
}

.prose {
    max-width: 68ch;
}

.prose h2 {
    font-size: 1.7rem;
    margin: 2rem 0 0.6rem;
}

.prose p,
.prose li {
    color: var(--ink-soft);
}

.split {
    display: grid;
    gap: 1rem;
    margin-top: 1.5rem;
}

.note-card {
    padding: 1.3rem 1.4rem;
}

.note-card h2 {
    font-size: 1.4rem;
    margin-bottom: 0.4rem;
}

.track-layout {
    display: grid;
    gap: 1.25rem;
    margin-top: 1.5rem;
}

.track-form,
.track-result {
    padding: 1.3rem;
}

.track-result h2 {
    font-size: 1.8rem;
    margin-bottom: 0.35rem;
}

.timeline {
    list-style: none;
    margin: 1rem 0 0;
    padding: 0;
    display: grid;
    gap: 0.8rem;
}

.timeline li {
    padding-left: 0.9rem;
    border-left: 2px solid var(--accent-soft);
}

.checklist {
    margin: 0;
    padding-left: 1.1rem;
}

.checklist li + li {
    margin-top: 0.35rem;
}

@media (min-width: 800px) {
    .split,
    .track-layout {
        grid-template-columns: 1.1fr 0.9fr;
        align-items: start;
    }
}

.preview-stage {
    max-width: 52rem;
    margin: 1.5rem auto 3rem;
}

.preview-stage .card {
    padding: 1.25rem 1.3rem 1.4rem;
    margin-top: 1rem;
}

.preview-stage .field textarea {
    width: 100%;
    border-radius: var(--radius-sm);
    border: 1px solid var(--line);
    background: #fff;
    color: var(--ink);
    font: inherit;
    padding: 0.7rem 0.9rem;
}

.preview-stage model-viewer {
    width: 100%;
    height: min(70vh, 520px);
    background: var(--cream);
    border: 1px solid var(--line);
    border-radius: var(--radius);
}