.cn-guide-section { margin: 3rem 0; scroll-margin-top: 1rem; }
.cn-guide-page-head { display: block; }
.cn-guide-grid { grid-template-columns: repeat(3, minmax(0, 1fr)); }
.cn-guide-grid .guide-card { min-width: 0; }
.cn-guide-article { width: 100%; max-width: none; padding: clamp(1.25rem, 3vw, 2.5rem); border: 1px solid var(--line); background: rgba(255,253,247,.88); }
.cn-guide-article .article-head { padding-top: .4rem; }
.cn-guide-article .article-head h1 { max-width: none; font-size: clamp(1.65rem, 2.6vw, 2.5rem); line-height: 1.38; }
.cn-guide-article .article-body { padding-bottom: .2rem; }
.cn-guide-article .article-body section:last-child { margin-bottom: .4rem; }
.cn-video-toolbar { display: grid; grid-template-columns: minmax(16rem, 1fr) minmax(11rem, .32fr) auto; gap: .65rem; margin-bottom: .75rem; }
.cn-video-toolbar input,
.cn-video-toolbar select,
.cn-video-toolbar button { min-height: 2.8rem; border: 1px solid var(--line); border-radius: .25rem; background: rgba(255,253,247,.82); color: var(--ink); font: inherit; font-size: .74rem; }
.cn-video-toolbar input,
.cn-video-toolbar select { padding: 0 .8rem; }
.cn-video-toolbar button { padding: 0 1rem; cursor: pointer; font-weight: 800; }
.cn-video-toolbar button:hover { border-color: var(--red); color: var(--red); }
.cn-video-grid { display: grid; grid-template-columns: repeat(3, minmax(0, 1fr)); gap: .9rem; }
.cn-video-grid-home { grid-template-columns: repeat(5, minmax(0, 1fr)); }
.cn-video-card { display: flex; min-width: 0; overflow: hidden; flex-direction: column; border: 1px solid var(--line); border-radius: .3rem; background: rgba(255,253,247,.8); box-shadow: 0 8px 24px rgba(55,52,43,.04); }
.cn-video-card[hidden] { display: none !important; }
.cn-video-card:hover { border-color: rgba(159,48,38,.42); transform: translateY(-1px); }
.cn-video-thumb { position: relative; display: block; overflow: hidden; aspect-ratio: 16 / 9; background: #191a18; }
.cn-video-thumb img { display: block; width: 100%; height: 100%; object-fit: cover; transition: transform .2s ease; }
.cn-video-card:hover .cn-video-thumb img { transform: scale(1.025); }
.cn-video-play { position: absolute; top: 50%; left: 50%; display: grid; width: 2.75rem; height: 2.75rem; place-items: center; border: 1px solid rgba(255,255,255,.7); border-radius: 50%; background: rgba(26,27,25,.78); color: white; font-size: .85rem; line-height: 1; transform: translate(-50%, -50%); }
.cn-video-card-copy { display: grid; flex: 1; align-content: start; padding: .9rem 1rem 1rem; }
.cn-video-meta { display: flex; flex-wrap: wrap; justify-content: space-between; gap: .25rem .65rem; margin: 0; color: var(--red); font: .61rem var(--mono); }
.cn-video-meta time { color: var(--muted); }
.cn-video-card h3 { margin: .5rem 0 0; font: 700 1rem/1.48 var(--serif); }
.cn-video-card h3 a { display: -webkit-box; overflow: hidden; color: inherit; text-decoration: none; -webkit-box-orient: vertical; -webkit-line-clamp: 3; }
.cn-video-card-copy > p:last-child { display: -webkit-box; overflow: hidden; margin: .55rem 0 0; color: var(--muted); font-size: .7rem; line-height: 1.75; -webkit-box-orient: vertical; -webkit-line-clamp: 3; }
.cn-video-card.is-compact .cn-video-card-copy { padding: .75rem .8rem .9rem; }
.cn-video-card.is-compact h3 { font-size: .86rem; line-height: 1.45; }
.cn-video-card.is-compact .cn-video-meta { display: grid; }
.cn-video-detail { max-width: 76rem; }
.cn-video-head { max-width: 62rem; }
.cn-video-head h1 { max-width: 22em; font-size: clamp(1.9rem, 4.3vw, 3.35rem); }
.cn-video-player { position: relative; overflow: hidden; width: 100%; aspect-ratio: 16 / 9; margin-top: 1.4rem; border: 1px solid var(--ink); background: #171816; }
.cn-video-player iframe { position: absolute; inset: 0; width: 100%; height: 100%; border: 0; }
.cn-video-detail-grid { display: grid; grid-template-columns: minmax(0, 1.45fr) minmax(16rem, .55fr); gap: 1rem; margin-top: 1rem; }
.cn-video-description,
.cn-video-channel { padding: clamp(1.1rem, 2vw, 1.5rem); border: 1px solid var(--line); background: rgba(255,253,247,.72); }
.cn-video-description > h2,
.cn-video-channel h2 { margin: 0 0 .75rem; font: 700 1.3rem var(--serif); }
.cn-video-description > p,
.cn-video-channel > p { margin: .6rem 0 0; color: var(--muted); font-size: .8rem; line-height: 1.9; }
.cn-video-channel { align-self: start; }
.cn-video-channel .eyebrow { color: var(--red); }
.cn-video-channel h2 { margin-top: .5rem; }
.cn-video-channel .button { width: 100%; margin-top: .75rem; }
.cn-video-chapters { margin-top: 1.5rem; padding-top: 1.25rem; border-top: 1px solid var(--line); }
.cn-video-chapters h2 { margin: 0 0 .65rem; font: 700 1.1rem var(--serif); }
.cn-video-chapters ol { margin: 0; padding: 0; list-style: none; }
.cn-video-chapters li { display: grid; grid-template-columns: 3.5rem 1fr; gap: .65rem; padding: .48rem 0; border-top: 1px solid rgba(145,132,111,.18); }
.cn-video-chapters li > span { color: var(--red); font: .67rem var(--mono); }
.cn-video-chapters li p { margin: 0; color: #4f4a42; font-size: .76rem; }

@media (max-width: 1240px) {
    .cn-video-grid-home { grid-template-columns: repeat(3, minmax(0, 1fr)); }
}

@media (max-width: 940px) {
    .cn-guide-grid,
    .cn-video-grid { grid-template-columns: repeat(2, minmax(0, 1fr)); }
    .cn-video-detail-grid { grid-template-columns: 1fr; }
}

@media (max-width: 720px) {
    .cn-video-toolbar { grid-template-columns: 1fr 1fr; }
    .cn-video-toolbar input { grid-column: 1 / -1; }
    .cn-guide-grid,
    .cn-video-grid,
    .cn-video-grid-home { grid-template-columns: 1fr; }
    .cn-video-card h3 { font-size: .96rem; }
    .cn-video-card.is-compact { display: grid; grid-template-columns: 8.5rem minmax(0, 1fr); min-height: 4.8rem; }
    .cn-video-card.is-compact .cn-video-thumb { width: 100%; height: auto; min-height: 0; aspect-ratio: 16 / 9; align-self: center; }
    .cn-video-card.is-compact .cn-video-card-copy { justify-content: center; padding: .45rem .65rem; }
    .cn-video-card.is-compact .cn-video-meta { display: block; overflow: hidden; text-overflow: ellipsis; white-space: nowrap; }
    .cn-video-card.is-compact .cn-video-meta time { display: none; }
    .cn-video-card.is-compact h3 { margin-top: .28rem; font-size: .82rem; line-height: 1.35; }
    .cn-video-card.is-compact h3 a { -webkit-line-clamp: 2; }
    .cn-video-head h1 { font-size: clamp(1.65rem, 8vw, 2.35rem); }
    .cn-guide-article .article-head h1 { font-size: clamp(1.5rem, 7vw, 2rem); }
}

@media (prefers-reduced-motion: reduce) {
    .cn-video-thumb img { transition: none; }
}