:root{--ci:#bc251e;--ink:#282622;--muted:#6b665e;--line:#e1dcd3}
html{scroll-behavior:smooth}a:focus-visible,button:focus-visible,summary:focus-visible{outline:3px solid #477da4;outline-offset:4px}.skip{position:absolute;left:16px;top:-80px;background:#fff;padding:12px;z-index:10}.skip:focus{top:12px}
.library-page .topbar .wrap,.series-watch .topbar .wrap{max-width:1120px}.library-page main,.series-watch main{max-width:1200px}
.eyebrow{font-size:12px;font-weight:800;letter-spacing:1.6px;color:var(--ci);margin:10px 0 14px}.library-hero{padding:28px 0 20px;margin:0}.library-hero h1{margin:0 0 18px;max-width:900px;font-size:clamp(32px,4.1vw,52px);letter-spacing:-1.8px}.library-hero .lead{font-size:18px;line-height:1.65;color:var(--muted);max-width:810px;margin-bottom:24px}.library-meta{display:flex;gap:24px;flex-wrap:wrap;font-size:13px;color:var(--muted)}
.language-filter,.language-switch{display:flex;gap:8px;flex-wrap:wrap;margin:22px 0}.language-filter button,.language-switch a{font:inherit;font-size:14px;font-weight:600;border:1px solid var(--line);border-radius:24px;background:#fff;color:var(--ink);padding:9px 16px;text-decoration:none;cursor:pointer;min-height:44px}.language-filter button:hover,.language-switch a:hover{border-color:var(--ci);color:var(--ci)}.language-filter button[aria-pressed=true],.language-switch a[aria-current=page]{background:var(--ink);border-color:var(--ink);color:#fff}
.filter-note{font-size:13px;color:var(--muted);margin:0}.language-section{scroll-margin-top:20px;border-top:1px solid var(--line);padding-top:8px;margin:24px 0 38px}.language-section[hidden]{display:none}.section-title{display:flex;align-items:baseline;gap:14px;flex-wrap:wrap;margin-bottom:18px}.section-title h2{margin:16px 0 0;font-size:26px}.section-title span{font-size:13px;color:var(--muted)}
.video-card{display:flex;flex-direction:column;background:#fff!important;border-radius:12px!important;transition:box-shadow .18s}.video-card:hover{box-shadow:0 5px 18px #2b231811}.video-card .thumb{position:relative;display:block;background:#eae7e1}.video-card img{height:auto;aspect-ratio:16/9;object-fit:cover}.duration{position:absolute;bottom:10px;right:10px;background:#201e1ce6;color:#fff;font-size:12px;padding:1px 7px;border-radius:4px;font-variant-numeric:tabular-nums}.card-body{padding:18px;display:flex;flex-direction:column;flex:1}.cards .card-body h3{padding:0;margin:8px 0 10px;font-size:20px;line-height:1.45;letter-spacing:-.3px}.cards .card-body p{padding:0;margin:0 0 18px;font-size:14px;line-height:1.7;color:var(--muted)}.card-kicker{font-size:11px;letter-spacing:1px;color:var(--ci);font-weight:800}.watch-link{margin-top:auto;font-size:14px;font-weight:700;color:var(--ci)}
.legacy{margin:34px 0;padding:22px 0;border-top:1px solid var(--line);border-bottom:1px solid var(--line)}.legacy summary{font-size:20px;font-weight:700;cursor:pointer;color:var(--ink)}.legacy .cards{margin-top:20px}.legacy h3{font-size:16px}.legacy p{font-size:13px}.library-context h2{margin-top:24px}.library-context li{padding:5px 0}.library-context a{text-decoration-thickness:1px}.library-footer{font-size:13px;display:flex;justify-content:space-between;gap:20px;flex-wrap:wrap}
.series-watch .watch-title{font-size:clamp(26px,3.2vw,38px);max-width:1020px;line-height:1.35;margin:20px 0}.series-watch .player{max-width:none;border-radius:12px;overflow:hidden;background:#161616}.series-watch .language-switch{margin:16px 0}.watch-meta{display:flex;justify-content:space-between;gap:16px;flex-wrap:wrap;font-size:13px;color:var(--muted);margin-top:12px}.watch-description{font-size:18px;max-width:960px}.series-watch .note{max-width:960px}.series-watch .video-cta{margin:28px 0;border-left-color:var(--ci);padding:24px}.series-watch .video-cta p{max-width:none}.series-watch .related-grid{display:grid;grid-template-columns:1fr 1fr;gap:24px}.series-watch .related{border-top:1px solid var(--line);padding-top:8px}.series-watch .related li{line-height:1.6}.series-watch .related .guide-lang{font-size:12px;color:var(--muted)}
@media(min-width:981px){.library-hero{display:grid;grid-template-columns:1fr 1fr;column-gap:52px;padding:20px 0 12px}.library-hero .eyebrow{grid-column:1/-1}.library-hero h1{grid-row:2/4;font-size:46px;margin:8px 0}.library-hero .lead{margin:6px 0 16px;font-size:17px}.library-meta{align-self:start}.language-filter{margin-top:20px}}
@media(min-width:761px) and (max-width:980px){.cards{gap:14px}.cards .card-body h3{font-size:18px}.card-body{padding:14px}}
@media(max-width:760px){.library-hero{padding:16px 0}.library-hero h1{letter-spacing:-1px}.library-hero .lead{font-size:16px}.library-meta{gap:8px 18px}.language-filter{gap:7px;margin:18px 0}.language-filter button,.language-switch a{font-size:13px;padding:8px 12px}.section-title h2{font-size:24px}.cards .card-body h3{font-size:21px}.cards .card-body p{font-size:15px}.card-body{padding:20px}.series-watch .related-grid{grid-template-columns:1fr}.series-watch .watch-title{font-size:26px;letter-spacing:-.6px}.watch-description{font-size:16px}.library-footer{display:block}.library-footer a{display:inline-block;margin-bottom:8px}}
@media(prefers-reduced-motion:reduce){html{scroll-behavior:auto}.video-card{transition:none}}
.video-learning,.video-chapters,.video-transcript{max-width:960px;margin:32px 0;color:var(--ink)}.video-learning h2,.video-chapters h2,.video-transcript h2{font-size:22px;line-height:1.4;letter-spacing:-.3px}.video-learning p,.learning-points{font-size:16px;line-height:1.85}.learning-points{padding-left:24px}.learning-points li{padding:4px 0 4px 4px}.installation-reference{font-size:14px;line-height:1.75}.video-chapters{border-top:1px solid var(--line);padding-top:12px}.time-hint,.transcript-note{font-size:14px;line-height:1.7;color:var(--muted)}.video-chapters ol,.video-transcript ol{list-style:none;padding:0;margin:16px 0 0}.video-chapters ol{display:grid;grid-template-columns:repeat(2,minmax(0,1fr));gap:8px 18px}.chapter-link{display:grid;grid-template-columns:52px minmax(0,1fr);align-items:start;gap:12px;padding:12px 10px;min-height:48px;text-decoration:none!important;line-height:1.6;border-bottom:1px solid var(--line)}.chapter-link:hover{background:#f2eee7;color:var(--ci)}.timecode{font-size:14px;font-weight:700;font-variant-numeric:tabular-nums;color:var(--ci);white-space:nowrap}.video-transcript{border:1px solid var(--line);border-radius:10px;padding:0 22px}.video-transcript summary{padding:20px 0;cursor:pointer;list-style-position:inside}.video-transcript summary h2{display:inline;margin:0 0 0 6px;font-size:19px}.video-transcript[open] summary{border-bottom:1px solid var(--line)}.transcript-cue{display:grid;grid-template-columns:52px minmax(0,1fr);gap:14px;padding:8px 0;border-bottom:1px solid #e1dcd377}.transcript-cue:last-child{border-bottom:0}.transcript-cue p{margin:0;font-size:15px;line-height:1.8;max-width:none;overflow-wrap:anywhere}.transcript-time{display:block;min-height:44px;padding-top:4px;text-decoration-thickness:1px;text-underline-offset:3px}.video-transcript ol{margin-bottom:20px}.video-learning,.video-chapters,.video-transcript,#player{scroll-margin-top:20px}
@media(max-width:760px){.video-chapters ol{grid-template-columns:1fr}.video-learning,.video-chapters,.video-transcript{margin:26px 0}.video-learning h2,.video-chapters h2{font-size:21px}.chapter-link{padding:12px 0;gap:10px}.video-transcript{padding:0 14px}.video-transcript summary h2{font-size:18px}.transcript-cue{grid-template-columns:45px minmax(0,1fr);gap:8px}.transcript-cue p{font-size:15px}.video-learning p,.learning-points{font-size:16px}.video-transcript summary{line-height:1.7}}
.hub-line{display:block}