/* Tutorial details reuse the global semantic theme tokens. */
.tutorial-detail-app { min-width: 0; }
.tutorial-detail-shell { width: min(calc(100% - 36px), 1380px); display: grid; grid-template-columns: 238px minmax(0, 1fr); gap: 18px; margin: 0 auto; padding: 22px 0 70px; }
.tutorial-detail-sidebar { position: sticky; top: 86px; align-self: start; max-height: calc(100vh - 108px); overflow: auto; border: 1px solid var(--app-line); border-radius: 12px; background: var(--app-panel); }
.tutorial-detail-sidebar-head { display: grid; gap: 4px; padding: 16px 15px; border-bottom: 1px solid var(--app-line); }
.tutorial-detail-sidebar-head strong { font-size: 14px; }
.tutorial-detail-sidebar-head small, .tutorial-detail-search span { color: var(--app-faint); font-size: 12px; }
.tutorial-detail-search { display: grid; gap: 5px; padding: 11px 10px 5px; }
.tutorial-detail-search input { width: 100%; min-height: 32px; padding: 7px 9px; border: 1px solid var(--control-border); border-radius: 7px; background: var(--control-bg); color: var(--control-text); font: inherit; font-size: 12px; }
.tutorial-detail-search input::placeholder { color: var(--app-faint); }
.tutorial-detail-search input:focus { border-color: var(--app-accent); outline: 2px solid var(--app-accent-soft); outline-offset: 1px; }
.tutorial-detail-nav-group { padding: 12px 10px 3px; }
.tutorial-detail-nav-group > small { display: block; padding: 0 7px 6px; color: var(--app-faint); font-size: 12px; letter-spacing: .08em; }
.tutorial-detail-nav-link { display: grid; grid-template-columns: 18px minmax(0, 1fr) 12px; align-items: center; gap: 7px; min-height: 34px; margin: 2px 0; padding: 7px 9px; border: 1px solid transparent; border-radius: 7px; color: var(--app-muted); font-size: 12px; }
.tutorial-detail-nav-link b, .tutorial-detail-nav-link i { color: var(--app-accent); font-size: 12px; font-style: normal; }
.tutorial-detail-nav-link:hover, .tutorial-detail-nav-link.is-active { border-color: color-mix(in srgb, var(--app-accent) 42%, var(--app-line)); background: var(--app-accent-soft); color: var(--app-text); }
.tutorial-detail-empty { margin: 12px 10px 16px; color: var(--app-muted); font-size: 12px; line-height: 1.6; }
.tutorial-detail-back { display: block; margin: 12px 10px 14px; padding: 11px 9px; border-top: 1px solid var(--app-line); color: var(--app-accent); font-size: 12px; }
.tutorial-detail-main { min-width: 0; }
.tutorial-detail-kicker, .tutorial-detail-panel-head span, .tutorial-detail-check span { color: var(--app-accent); font-size: 12px; font-weight: 800; letter-spacing: .14em; text-transform: uppercase; }
.tutorial-detail-head { display: flex; align-items: end; justify-content: space-between; gap: 20px; padding: 10px 0 20px; border-bottom: 1px solid var(--app-line); }
.tutorial-detail-head h1 { max-width: 840px; margin: 8px 0 0; font-family: "Newsreader", "Songti SC", serif; font-size: clamp(30px, 3.3vw, 44px); line-height: 1.06; letter-spacing: -.035em; }
.tutorial-detail-subtitle { margin: 11px 0 0; color: var(--app-muted); font-size: 15px; line-height: 1.65; }
.tutorial-detail-problem { max-width: 820px; margin: 12px 0 0; color: var(--app-text); font-size: 12px; line-height: 1.7; }
.tutorial-detail-problem strong { margin-right: 8px; color: var(--app-accent); }
.tutorial-detail-meta { display: flex; flex-wrap: wrap; justify-content: end; gap: 6px; color: var(--app-faint); font-size: 12px; }
.tutorial-detail-meta span { padding: 6px 8px; border: 1px solid var(--app-line); border-radius: 999px; }
.tutorial-detail-hero { display: grid; grid-template-columns: minmax(220px, .7fr) minmax(0, 1.3fr); gap: 14px; margin-top: 18px; padding: 14px; border: 1px solid color-mix(in srgb, var(--app-accent) 45%, var(--app-line)); border-radius: 12px; background: var(--app-panel); }
.tutorial-detail-hero-copy { display: flex; flex-direction: column; justify-content: center; padding: 10px 11px 10px 7px; }
.tutorial-detail-hero-copy > span { color: var(--app-accent); font-size: 12px; font-weight: 800; letter-spacing: .1em; }
.tutorial-detail-hero h2 { margin: 9px 0 0; font-size: 22px; line-height: 1.25; }
.tutorial-detail-hero p { margin: 10px 0 0; color: var(--app-muted); font-size: 12px; line-height: 1.7; }
.tutorial-detail-hero a { display: inline-flex; align-self: start; margin-top: 16px; padding: 9px 12px; border: 1px solid var(--app-accent); border-radius: 7px; background: var(--app-accent); color: var(--app-accent-ink); font-size: 12px; font-weight: 800; }
.tutorial-detail-hero figure { position: relative; min-width: 0; margin: 0; overflow: hidden; border: 1px solid var(--app-line); border-radius: 9px; background: var(--app-bg); }
.tutorial-detail-hero img { display: block; width: 100%; aspect-ratio: 16 / 9; object-fit: cover; transition: transform .3s ease; }
.tutorial-detail-hero figure:hover img { transform: scale(1.04); }
.tutorial-detail-hero figcaption { position: absolute; right: 10px; bottom: 9px; left: 10px; padding: 6px 8px; border: 1px solid color-mix(in srgb, var(--app-accent) 35%, var(--app-line)); border-radius: 6px; background: color-mix(in srgb, var(--app-bg) 86%, transparent); color: var(--app-text); font-size: 12px; }
.tutorial-detail-demo, .tutorial-detail-steps { min-width: 0; margin-top: 12px; padding: 16px; border: 1px solid var(--app-line); border-radius: 10px; background: var(--app-panel); }
.tutorial-detail-panel-head { display: flex; align-items: start; justify-content: space-between; gap: 12px; }
.tutorial-detail-panel-head h2 { margin: 7px 0 0; font-size: 17px; line-height: 1.35; }
.tutorial-detail-panel-head > b { padding: 5px 7px; border: 1px solid var(--app-accent); border-radius: 999px; color: var(--app-accent); font-size: 12px; white-space: nowrap; }
.tutorial-detail-demo video { display: block; width: 100%; margin-top: 13px; border: 1px solid var(--app-line); border-radius: 7px; background: var(--app-bg); }
.tutorial-detail-demo > p { margin: 9px 0 0; color: var(--app-faint); font-size: 12px; line-height: 1.6; }
.tutorial-detail-screenshot-grid { display: grid; grid-template-columns: minmax(0, 1.45fr) minmax(230px, .55fr); gap: 12px; margin-top: 14px; }
.tutorial-detail-screenshot-grid figure { min-width: 0; margin: 0; padding: 10px; border: 1px solid var(--app-line); border-radius: 9px; background: var(--app-bg); }
.tutorial-detail-screenshot-grid figure > span { display: inline-flex; margin-bottom: 9px; padding: 5px 9px; border: 1px solid color-mix(in srgb, var(--app-accent) 45%, var(--app-line)); border-radius: 999px; color: var(--app-accent); font-size: 12px; font-weight: 800; }
.tutorial-detail-screenshot-grid img { display: block; width: 100%; border: 1px solid var(--app-line); border-radius: 7px; background: var(--app-panel); }
.tutorial-detail-screenshot-grid figcaption { margin-top: 9px; color: var(--app-muted); font-size: 12px; line-height: 1.6; }
.tutorial-detail-screenshot-demo > p { font-size: 12px; }
.tutorial-detail-steps ol { display: grid; grid-template-columns: repeat(2, minmax(0, 1fr)); gap: 9px; margin: 15px 0 0; padding: 0; list-style: none; }
.tutorial-detail-steps li { display: grid; grid-template-columns: 28px minmax(0, 1fr); gap: 9px; padding: 13px; border: 1px solid var(--app-line); border-radius: 8px; background: var(--app-panel-2); }
.tutorial-detail-steps li > b { color: var(--app-accent); font-size: 12px; }
.tutorial-detail-steps strong { color: var(--app-text); font-size: 13px; }
.tutorial-detail-steps p { margin: 5px 0 0; color: var(--app-muted); font-size: 12px; line-height: 1.65; }
.tutorial-detail-check { display: flex; align-items: center; justify-content: space-between; gap: 18px; margin-top: 12px; padding: 18px; border: 1px solid color-mix(in srgb, var(--app-accent) 45%, var(--app-line)); border-radius: 10px; background: var(--app-accent-soft); }
.tutorial-detail-check h2 { margin: 7px 0 0; font-size: 18px; }
.tutorial-detail-check p { max-width: 680px; margin: 8px 0 0; color: var(--app-muted); font-size: 12px; line-height: 1.7; }
.tutorial-detail-actions { display: flex; flex-wrap: wrap; justify-content: end; gap: 7px; }
.tutorial-detail-actions a { display: inline-flex; align-items: center; min-height: 34px; padding: 0 10px; border: 1px solid var(--app-line); border-radius: 7px; color: var(--app-muted); font-size: 12px; font-weight: 800; white-space: nowrap; }
.tutorial-detail-actions a:not(.is-primary):hover { border-color: var(--app-accent); color: var(--app-accent); }
.tutorial-detail-actions .is-primary { border-color: var(--app-accent); background: var(--app-accent); color: var(--app-accent-ink); }
.tutorial-detail-actions .is-primary:hover { background: var(--app-accent); color: var(--app-accent-ink); }
@media (max-width: 960px) { .tutorial-detail-shell { grid-template-columns: 210px minmax(0, 1fr); } .tutorial-detail-hero { grid-template-columns: 1fr; } .tutorial-detail-hero-copy { padding: 7px 3px; } .tutorial-detail-check { display: block; } .tutorial-detail-actions { justify-content: start; margin-top: 13px; } }
@media (max-width: 760px) { .tutorial-detail-shell { width: min(calc(100% - 24px), 640px); grid-template-columns: 1fr; padding-top: 12px; } .tutorial-detail-sidebar { position: static; max-height: 250px; } .tutorial-detail-sidebar-head { position: sticky; z-index: 2; top: 0; display: flex; align-items: center; justify-content: space-between; background: var(--app-panel); } .tutorial-detail-nav-group { display: grid; grid-template-columns: repeat(2, minmax(0, 1fr)); gap: 2px 6px; } .tutorial-detail-nav-group > small { grid-column: 1 / -1; } .tutorial-detail-head { display: block; } .tutorial-detail-meta { justify-content: start; margin-top: 13px; } .tutorial-detail-head h1 { font-size: 34px; } .tutorial-detail-steps ol, .tutorial-detail-screenshot-grid { grid-template-columns: 1fr; } }

.tutorial-detail-guide-demo figure, .tutorial-detail-reference { min-width: 0; margin-top: 13px; padding: 10px; border: 1px solid var(--app-line); border-radius: 9px; background: var(--app-bg); }
.tutorial-detail-guide-demo figure img, .tutorial-detail-reference img { display: block; width: 100%; border: 1px solid var(--app-line); border-radius: 7px; background: var(--app-panel); }
.tutorial-detail-guide-demo figure figcaption, .tutorial-detail-reference figcaption { margin-top: 8px; color: var(--app-muted); font-size: 12px; line-height: 1.6; }
.tutorial-detail-reference { margin-top: 12px; padding: 0; border: 0; background: transparent; }

/* Current guides preserve complete screenshots and label the provenance below them. */
.tutorial-content-meta { display: grid; grid-template-columns: repeat(2, minmax(0, 1fr)); gap: 10px; margin: 16px 0 0; }
.tutorial-content-meta > div { min-width: 0; padding: 12px 14px; border: 1px solid var(--app-line); border-radius: 9px; background: var(--app-panel); }
.tutorial-content-meta dt { color: var(--app-muted); font-size: 12px; }
.tutorial-content-meta dd { margin: 5px 0 0; color: var(--app-text); font-size: 13px; line-height: 1.6; overflow-wrap: anywhere; }
.tutorial-content-version-note { margin: 10px 0 0; color: var(--app-muted); font-size: 12px; line-height: 1.7; }
.tutorial-content-shot { min-width: 0; margin: 0; border: 1px solid var(--app-line); border-radius: 9px; background: var(--app-bg); overflow: hidden; }
.tutorial-content-shot img { display: block; width: 100%; height: auto; max-height: 640px; object-fit: contain; }
.tutorial-content-shot figcaption { display: grid; gap: 4px; padding: 10px 12px; border-top: 1px solid var(--app-line); color: var(--app-muted); font-size: 12px; line-height: 1.6; }
.tutorial-content-shot figcaption strong { color: var(--app-text); font-weight: 600; }
.tutorial-detail-hero .tutorial-content-shot img, .feature-hero-card .tutorial-content-shot img { aspect-ratio: auto; max-height: 520px; object-fit: contain; transform: none; }
.tutorial-detail-hero .tutorial-content-shot figcaption { position: static; margin: 0; border: 0; border-top: 1px solid var(--app-line); border-radius: 0; background: var(--app-panel); }
.tutorial-content-shot-link, .tutorial-detail-hero .tutorial-content-shot-link { display: inline-flex; align-self: start; justify-self: start; min-height: 28px; margin: 3px 0 0; padding: 2px 0; border: 0; border-radius: 0; background: transparent; color: var(--app-accent); font-size: 12px; font-weight: 600; }
.tutorial-content-shot-link:hover, .tutorial-detail-hero .tutorial-content-shot-link:hover { text-decoration: underline; }
.tutorial-content-gallery { display: grid; gap: 14px; margin-top: 14px; }
.tutorial-content-boundary { margin-top: 12px; padding: 16px 18px; border: 1px solid var(--app-line); border-radius: 10px; background: var(--app-panel); }
.tutorial-content-boundary h2 { margin: 0; color: var(--app-text); font-size: 17px; }
.tutorial-content-boundary p { margin: 9px 0 0; color: var(--app-muted); font-size: 13px; line-height: 1.8; }
.tutorial-content-pending { align-self: center; margin: 0; padding: 20px; border: 1px dashed var(--app-line); border-radius: 9px; color: var(--app-muted); font-size: 13px; line-height: 1.8; }
.tutorial-detail-hero--text { grid-template-columns: minmax(0, 1fr); }
.feature-detail-grid--steps { grid-template-columns: minmax(0, 1fr); }
.tutorial-catalog-app .tutorial-card-compact .tutorial-content-meta { margin-bottom: 16px; }
.tutorial-catalog-app .tutorial-card-compact h2 { font-size: clamp(23px, 2.6vw, 32px); }
.tutorial-catalog-app .tutorial-card-compact .tutorial-image { display: block; width: 100%; height: clamp(160px, 28vw, 320px); max-height: 320px; object-fit: contain; mask-image: none; -webkit-mask-image: none; }
.tutorial-catalog-app .tutorial-image-caption { margin: 7px 0 0; color: var(--app-muted); font-size: 12px; line-height: 1.7; }
.tutorial-catalog-empty { padding: 20px; border: 1px solid var(--app-line); border-radius: 10px; color: var(--app-muted); font-size: 14px; }
.tutorial-catalog-search { display: grid; min-width: 0; gap: 5px; }
.tutorial-content-search-label { color: var(--app-muted); font-size: 12px; }
.tutorial-catalog-app [hidden] { display: none !important; }
.tutorial-catalog-app .sidebar-head > div { display: grid; gap: 5px; }
.tutorial-catalog-app .knowledge-head h1 { max-width: 900px; font-size: clamp(34px, 3.5vw, 48px); line-height: 1.2; }
.tutorial-detail-app .tutorial-detail-head h1, .feature-app .feature-head h1 { font-size: clamp(30px, 3.2vw, 44px); line-height: 1.22; overflow-wrap: anywhere; }
@media (max-width: 760px) {
  .tutorial-detail-app .tutorial-detail-sidebar, .feature-app .feature-sidebar { max-height: 220px; }
  .tutorial-detail-hero .tutorial-content-shot img, .feature-hero-card .tutorial-content-shot img { max-height: 400px; }
  .tutorial-content-meta { grid-template-columns: minmax(0, 1fr); }
  .tutorial-detail-head h1, .feature-head h1 { overflow-wrap: anywhere; line-height: 1.25; }
  .tutorial-detail-actions a { white-space: normal; padding-top: 8px; padding-bottom: 8px; }
}
.video-guide-hero, .video-guide-complete { padding: var(--space-6); border: 1px solid var(--app-line); border-radius: var(--panel-radius); background: var(--app-panel); }
.video-guide-hero h1 { margin: var(--space-2) 0; color: var(--app-text); font-size: clamp(var(--font-xl), 3.2vw, calc(var(--font-xl) * 1.7)); line-height: 1.25; }
.video-guide-lead { max-width: 68ch; color: var(--app-muted); font-size: var(--font-lg); line-height: 1.8; }
.video-guide-meta { display: flex; flex-wrap: wrap; gap: var(--space-3); color: var(--app-accent-readable); font-size: var(--font-sm); font-weight: 700; }
.video-guide-actions { display: flex; flex-wrap: wrap; gap: var(--space-3); margin-top: var(--space-5); }
.video-guide-actions a { display: inline-flex; align-items: center; justify-content: center; padding: var(--space-3) var(--space-4); border: 1px solid var(--app-line); border-radius: var(--control-radius); color: var(--app-text); text-decoration: none; font-weight: 700; }
.video-guide-actions a.is-primary { border-color: var(--app-accent); background: var(--app-accent); color: var(--app-accent-ink); }
.video-guide-actions a:focus-visible, .video-guide-shot a:focus-visible { outline: 2px solid var(--app-accent); outline-offset: var(--space-1); }
.video-guide-provenance { margin: var(--space-5) 0; color: var(--app-muted); font-size: var(--font-sm); line-height: 1.8; }
.video-guide-section-head { margin: var(--space-8) 0 var(--space-5); }
.video-guide-section-head h2 { margin: var(--space-2) 0 0; color: var(--app-text); font-size: var(--font-xl); }
.video-guide-steps { display: grid; gap: var(--space-5); margin: 0; padding: 0; list-style: none; }
.video-guide-step { display: grid; grid-template-columns: minmax(0, .9fr) minmax(0, 1.4fr); align-items: start; gap: var(--space-5); padding: var(--space-5); border: 1px solid var(--app-line); border-radius: var(--panel-radius); background: var(--app-panel); }
.video-guide-step-copy { display: flex; align-items: flex-start; gap: var(--space-3); }
.video-guide-number { flex: 0 0 auto; color: var(--app-accent-readable); font-size: var(--font-lg); font-weight: 800; }
.video-guide-step h2 { margin: 0 0 var(--space-2); color: var(--app-text); font-size: var(--font-lg); line-height: 1.4; }
.video-guide-step p, .video-guide-complete p { margin: 0; color: var(--app-muted); font-size: var(--font-base); line-height: 1.8; }
.video-guide-shot { min-width: 0; margin: 0; }
.video-guide-shot a, .video-guide-shot img { display: block; max-width: 100%; }
.video-guide-shot img { width: 100%; height: auto; border: 1px solid var(--app-line); border-radius: var(--control-radius); }
.video-guide-shot figcaption { margin-top: var(--space-2); color: var(--app-muted); font-size: var(--font-sm); line-height: 1.6; }
.video-guide-complete { margin-top: var(--space-6); }
.video-guide-complete h2 { margin: 0 0 var(--space-3); color: var(--app-text); font-size: var(--font-xl); }
.video-guide-complete p + p { margin-top: var(--space-3); }
.video-guide-catalog-card { display: grid; grid-template-columns: minmax(0, 1fr) minmax(0, 1.2fr); gap: var(--space-5); align-items: center; }
.video-guide-catalog-card img { display: block; width: 100%; height: auto; border: 1px solid var(--app-line); border-radius: var(--control-radius); }
.video-guide-catalog-card .tutorial-actions { margin-top: var(--space-4); }
@media (max-width: 800px) { .video-guide-step, .video-guide-catalog-card { grid-template-columns: minmax(0, 1fr); } }
@media (max-width: 760px) { .tutorial-detail-app:has(.video-guide) .tutorial-detail-sidebar { display: none; } }