:root {
    --csh-accent: #b79b62;
    --csh-border: rgba(127,127,127,.28);
    --csh-muted: rgba(127,127,127,.85);
    --csh-surface: rgba(127,127,127,.06);
    --csh-radius: 16px;
}

.csh-series,
.csh-series-grid,
.csh-article-nav {
    box-sizing: border-box;
}

.csh-series {
    margin: 2.5rem 0;
    padding: clamp(1.25rem, 3vw, 2.25rem);
    border: 1px solid var(--csh-border);
    border-radius: var(--csh-radius);
    background: var(--csh-surface);
}

.csh-series + .csh-series { margin-top: 3rem; }
.csh-series-header { max-width: 850px; margin-bottom: 1.5rem; }
.csh-eyebrow,
.csh-feature-label,
.csh-section-heading > span {
    color: var(--csh-accent);
    font-size: .76rem;
    font-weight: 700;
    letter-spacing: .13em;
    text-transform: uppercase;
}

.csh-series-title { margin: .35rem 0 .75rem; font-size: clamp(1.8rem, 4vw, 3rem); line-height: 1.08; }
.csh-series-description { margin: 0; font-size: 1.08rem; line-height: 1.7; opacity: .86; }
.csh-series-image { margin: 1.5rem 0; overflow: hidden; border-radius: calc(var(--csh-radius) - 4px); }
.csh-series-image img { display: block; width: 100%; height: auto; }

.csh-feature {
    margin: 1.5rem 0;
    padding: 1.25rem 1.35rem;
    border-left: 3px solid var(--csh-accent);
    background: rgba(127,127,127,.07);
}
.csh-feature h3 { margin: .35rem 0 .5rem; font-size: 1.35rem; }
.csh-feature p { margin: .5rem 0 .7rem; }
.csh-feature a, .csh-part a, .csh-related a, .csh-card-title a, .csh-article-nav a { text-decoration: none; }
.csh-text-link { font-weight: 600; }

.csh-video-section,
.csh-parts,
.csh-related { margin-top: 2rem; }
.csh-section-heading { margin-bottom: .9rem; }
.csh-section-heading h3 { margin: .2rem 0 0; font-size: 1.35rem; }

.csh-video { position: relative; width: 100%; padding-top: 56.25%; overflow: hidden; border-radius: calc(var(--csh-radius) - 4px); background: #000; }
.csh-video iframe { position: absolute; inset: 0; width: 100%; height: 100%; border: 0; }

.csh-parts-list { list-style: none; margin: 0; padding: 0; border-top: 1px solid var(--csh-border); }
.csh-part { display: grid; grid-template-columns: 3rem 1fr; gap: 1rem; padding: 1.1rem 0; border-bottom: 1px solid var(--csh-border); }
.csh-part-number { color: var(--csh-accent); font-weight: 700; font-variant-numeric: tabular-nums; padding-top: .1rem; }
.csh-part h4 { margin: 0 0 .35rem; font-size: 1.08rem; }
.csh-part p { margin: 0 0 .55rem; opacity: .8; }
.csh-part-actions { display: flex; flex-wrap: wrap; gap: 1rem; font-size: .92rem; font-weight: 600; }

.csh-related ul { margin: 0; padding-left: 1.2rem; }
.csh-related li { margin: .45rem 0; }

.csh-series-grid { display: grid; grid-template-columns: repeat(var(--csh-columns, 2), minmax(0, 1fr)); gap: 1.25rem; margin: 2rem 0; }
.csh-series-card { overflow: hidden; border: 1px solid var(--csh-border); border-radius: var(--csh-radius); background: var(--csh-surface); }
.csh-card-image { display: block; aspect-ratio: 16 / 9; overflow: hidden; }
.csh-card-image img { width: 100%; height: 100%; object-fit: cover; }
.csh-card-body { padding: 1.15rem 1.2rem 1.3rem; }
.csh-card-title { margin: .3rem 0 .65rem; font-size: 1.3rem; }
.csh-card-body p { margin: 0 0 .8rem; opacity: .82; }
.csh-card-meta { font-size: .84rem; opacity: .68; }

.csh-article-nav { margin: 2rem 0; padding: 1rem 1.1rem; border: 1px solid var(--csh-border); border-radius: 12px; }
.csh-article-nav-series { margin-bottom: .7rem; }
.csh-article-nav-series span { opacity: .65; }
.csh-article-nav-links { display: flex; justify-content: space-between; gap: 1rem; font-size: .92rem; }
.csh-next { text-align: right; margin-left: auto; }

.csh-notice { padding: .75rem 1rem; border: 1px solid #d8a43b; background: rgba(216,164,59,.08); }

@media (max-width: 760px) {
    .csh-series-grid { grid-template-columns: 1fr; }
    .csh-part { grid-template-columns: 2.25rem 1fr; gap: .65rem; }
    .csh-article-nav-links { flex-direction: column; }
    .csh-next { text-align: left; margin-left: 0; }
}