/* css/custom.css */
/* LsWorld / 星夜研究室. Source-owned overrides for Hexo + Butterfly. */
:root {
  --lab-bg: #f8f7fc; --lab-surface: #fff; --lab-soft: #f3f0fc;
  --lab-ink: #303147; --lab-muted: #77768c; --lab-border: #e9e6f1;
  --lab-accent: #7760bc; --lab-accent-dark: #654caa;
  --lab-shadow: 0 8px 32px rgba(63,46,99,.045); --lab-radius: 20px;
  --font-color: var(--lab-ink); --text-highlight-color: var(--lab-ink);
  --card-bg: var(--lab-surface); --global-bg: var(--lab-bg);
}
[data-theme='dark'] {
  --lab-bg: #151523; --lab-surface: #1e1e30; --lab-soft: #28253c;
  --lab-ink: #e3e0f2; --lab-muted: #aaa5bf; --lab-border: #333047;
  --lab-accent: #b6a0ef; --lab-accent-dark: #c7b4f8;
  --lab-shadow: 0 8px 32px rgba(0,0,0,.12);
  --font-color: var(--lab-ink); --text-highlight-color: var(--lab-ink);
  --card-bg: var(--lab-surface); --global-bg: var(--lab-bg);
}
html { scroll-behavior: smooth; scroll-padding-top: 90px; }
body { background: var(--lab-bg); color: var(--lab-ink); }
#web_bg { background: radial-gradient(ellipse at 12% 3%,rgba(191,177,231,.16),transparent 40%),radial-gradient(ellipse at 95% 25%,rgba(183,209,242,.12),transparent 35%),var(--lab-bg); }
[data-theme='dark'] #web_bg:before { content: none; }
#page-header.not-top-img { height: 76px; margin-bottom: 0; }
#page-header.not-top-img #nav { height: 76px; padding: 0 max(28px,calc((100vw - 1200px)/2)); background: color-mix(in srgb,var(--lab-surface) 90%,transparent); border-bottom: 1px solid var(--lab-border); box-shadow: none; backdrop-filter: blur(16px); }
#page-header #nav .site-name { font-size: 22px; font-weight: 800; letter-spacing: -.6px; }
#nav .site-icon { width: 31px; height: 31px; margin-right: 9px; vertical-align: middle; }
#nav .menus_items .menus_item { padding: 0 0 0 22px; }
#nav .menus_items .menus_item i { display: none; }
#nav .site-page { font-size: 14px; }
#nav .site-page:not(.child):after { background: var(--lab-accent); border-radius: 4px; }
#nav .lab-nav-active { color: var(--lab-accent) !important; font-weight: 700; }
.lab-theme-toggle { width: 34px; height: 34px; margin-left: 18px; border: 1px solid var(--lab-border); border-radius: 50%; color: var(--lab-accent); background: var(--lab-soft); font-size: 18px; cursor: pointer; }
.lab-nav-control { border: 0; padding: 0; background: none; color: inherit; cursor: pointer; }
.lab-skip-link { position: fixed; left: 16px; top: -90px; z-index: 1000; padding: 8px 16px; background: var(--lab-surface); border: 2px solid var(--lab-accent); border-radius: 8px; }
.lab-skip-link:focus { top: 12px; }
#content-inner.layout { max-width: 1200px; padding: 36px 24px 70px; }
#content-inner.layout.hide-aside { max-width: 1200px; }
#content-inner.layout > .lab-home, #content-inner.layout > .lab-page { width: 100%; padding: 0; background: none; box-shadow: none; border-radius: 0; }
.lab-home *, .lab-page * { box-sizing: border-box; }
.lab-home h1,.lab-home h2,.lab-home h3,.lab-page h1,.lab-page h2,.lab-page h3 { color: var(--lab-ink); }
.lab-home a,.lab-page a { color: inherit; }
.lab-home p,.lab-page p { margin: 0; }
.lab-eyebrow { display: block; font-size: 10px; font-weight: 650; letter-spacing: 2.3px; line-height: 1.8; color: var(--lab-muted); }
.lab-hero { display: grid; grid-template-columns: .85fr 1.15fr; gap: 36px; align-items: center; padding: 16px 0 34px; }
.lab-hero-copy { padding: 4px 0 4px 6px; }
.lab-status { display: inline-flex; gap: 8px; align-items: center; font-size: 11px; color: var(--lab-accent); background: var(--lab-soft); border: 1px solid var(--lab-border); border-radius: 999px; padding: 4px 12px; margin-bottom: 24px; }
.lab-status-dot { width: 6px; height: 6px; border-radius: 50%; background: #8caa91; box-shadow: 0 0 0 3px rgba(140,170,145,.12); }
.lab-hero h1 { position: relative; margin: 13px 0 12px; font-size: clamp(36px,4vw,51px); font-weight: 800; line-height: 1.34; letter-spacing: 1px; }
.lab-gradient-text { background: linear-gradient(105deg,#8170bf,#7291c8 90%); background-clip: text; -webkit-background-clip: text; color: transparent; }
[data-theme='dark'] .lab-gradient-text { background-image: linear-gradient(105deg,#cab3ff,#a7c3f8 90%); }
.lab-heading-star { display: inline-block; color: #b9acd9; font-size: 32px; vertical-align: top; margin: 2px 0 0 12px; }
.lab-hero-tagline { color: var(--lab-ink); font-size: 18px; letter-spacing: 1px; }
.lab-hero-description { max-width: 350px; margin-top: 16px !important; color: var(--lab-muted); font-size: 13px; line-height: 1.95; }
.lab-actions { display: flex; flex-wrap: wrap; gap: 10px; align-items: center; margin-top: 24px; }
.lab-button { display: inline-flex; align-items: center; justify-content: center; gap: 18px; padding: 10px 18px; min-height: 42px; border-radius: 10px; border: 1px solid transparent; font-size: 12px; font-weight: 600; line-height: 1.5; cursor: pointer; transition: transform .2s,background .2s,box-shadow .2s; }
.lab-home .lab-button-primary,.lab-page .lab-button-primary { background: #7961b6; color: #fff; box-shadow: 0 4px 12px rgba(119,96,188,.16); }
.lab-home .lab-button-primary:hover,.lab-page .lab-button-primary:hover { background: #654caa; color: #fff; transform: translateY(-2px); }
.lab-button-secondary { background: var(--lab-surface); border-color: var(--lab-border); color: var(--lab-ink); }
.lab-button-secondary:hover { background: var(--lab-soft); transform: translateY(-2px); }
.lab-hero-topics { display: flex; gap: 10px; margin-top: 26px; color: var(--lab-muted); font-size: 9px; letter-spacing: 1.3px; }
.lab-hero-art { position: relative; overflow: hidden; aspect-ratio: 1.38; border-radius: 24px 24px 64px 24px; box-shadow: 0 14px 42px rgba(65,45,101,.13); }
.lab-hero-art > img { width: 100%; height: 100%; object-fit: cover; object-position: 58% center; }
.lab-hero-art:after { content: ''; position: absolute; inset: 50% 0 0; background: linear-gradient(transparent,rgba(27,22,47,.65)); pointer-events: none; }
.lab-art-caption { position: absolute; z-index: 1; left: 26px; bottom: 27px; display: flex; gap: 13px; align-items: center; color: #fff; }
.lab-art-caption > span { font-size: 27px; color: #e4cef7; }
.lab-art-caption strong { display: block; font-size: 13px; font-weight: 500; letter-spacing: 1px; }
.lab-art-caption small { display: block; font-size: 8px; letter-spacing: 2px; color: #ddd3e8; }
.lab-art-label { position: absolute; right: 18px; top: 18px; font-size: 9px; letter-spacing: 1px; color: #fff; padding: 4px 10px; border: 1px solid rgba(255,255,255,.25); background: rgba(44,34,67,.25); backdrop-filter: blur(8px); border-radius: 999px; }
.lab-overview { display: flex; align-items: center; gap: 24px; border: 1px solid var(--lab-border); border-radius: 15px; background: var(--lab-surface); padding: 18px 24px; }
.lab-focus { flex: 1; display: flex; align-items: center; gap: 15px; min-width: 0; }
.lab-orbit { font-size: 28px; color: var(--lab-accent); }
.lab-focus small { color: var(--lab-muted); font-size: 10px; letter-spacing: 1px; }
.lab-focus p { font-size: 12px; line-height: 1.8; }
.lab-stat { min-width: 90px; padding-left: 24px; border-left: 1px solid var(--lab-border); text-align: center; }
.lab-stat strong { display: block; font-size: 22px; line-height: 1.4; font-weight: 650; color: var(--lab-accent); }
.lab-stat span { font-size: 10px; color: var(--lab-muted); }
.lab-section { margin-top: 48px; }
.lab-section-heading { display: flex; align-items: flex-end; justify-content: space-between; gap: 16px; margin-bottom: 20px; }
.lab-section-heading h2 { font-size: 21px; font-weight: 700; margin: 5px 0 0; letter-spacing: .5px; line-height: 1.5; }
.lab-home .lab-text-link,.lab-page .lab-text-link { color: var(--lab-accent); font-size: 11px; white-space: nowrap; }
.lab-text-link:hover { color: var(--lab-accent-dark); text-decoration: underline; text-underline-offset: 4px; }
.lab-track-grid { display: grid; grid-template-columns: repeat(4,minmax(0,1fr)); gap: 14px; }
.tone-lilac { --tone-bg: #eeebfa; --tone-ink: #8970c0; }
.tone-blue { --tone-bg: #eaf1fb; --tone-ink: #7395c3; }
.tone-mint { --tone-bg: #eaf5f1; --tone-ink: #6eaa95; }
.tone-peach { --tone-bg: #fcf0e9; --tone-ink: #c9997e; }
[data-theme='dark'] .tone-lilac { --tone-bg: #30283f; --tone-ink: #bda2f0; }
[data-theme='dark'] .tone-blue { --tone-bg: #253245; --tone-ink: #a1bdea; }
[data-theme='dark'] .tone-mint { --tone-bg: #243831; --tone-ink: #8fcab7; }
[data-theme='dark'] .tone-peach { --tone-bg: #3a2d2a; --tone-ink: #e4b79b; }
.lab-track-card { display: block; min-width: 0; padding: 19px 17px 15px; border: 1px solid var(--lab-border); border-radius: 15px; background: var(--lab-surface); transition: transform .2s,box-shadow .2s,border-color .2s; }
.lab-track-card:hover { transform: translateY(-4px); border-color: var(--tone-ink); box-shadow: var(--lab-shadow); }
.lab-track-top { display: flex; justify-content: space-between; align-items: center; gap: 8px; }
.lab-track-icon { display: inline-flex; align-items: center; justify-content: center; flex-shrink: 0; width: 40px; height: 40px; font-size: 23px; line-height: 1; background: var(--tone-bg); color: var(--tone-ink); border-radius: 12px; }
.lab-track-count { color: var(--lab-muted); font-size: 9px; }
.lab-track-card h3 { font-size: 14px; margin: 15px 0 6px; line-height: 1.6; }
.lab-track-card p { font-size: 10px; color: var(--lab-muted); line-height: 1.8; }
.lab-track-bottom { display: flex; align-items: center; justify-content: space-between; gap: 5px; margin-top: 20px; padding-top: 12px; border-top: 1px solid var(--lab-border); color: var(--tone-ink); font-size: 9px; }
.lab-track-bottom > span:first-child { overflow: hidden; text-overflow: ellipsis; white-space: nowrap; }
.lab-track-bottom > span:last-child { font-size: 17px; }
.lab-featured { display: grid; grid-template-columns: 1fr 1fr; overflow: hidden; border: 1px solid var(--lab-border); border-radius: var(--lab-radius); background: var(--lab-surface); }
.lab-featured-art { position: relative; min-height: 265px; }
.lab-featured-art img { width: 100%; height: 100%; position: absolute; inset: 0; object-fit: cover; object-position: 70% center; }
.lab-image-badge { position: absolute; top: 18px; left: 18px; color: #fff; background: rgba(35,28,62,.62); padding: 4px 10px; border: 1px solid rgba(255,255,255,.22); border-radius: 6px; font-size: 9px; letter-spacing: 1.3px; backdrop-filter: blur(8px); }
.lab-featured-copy { padding: 29px 34px; }
.lab-featured-copy h3 { font-size: 28px; margin: 7px 0 0; font-weight: 750; line-height: 1.5; }
.lab-featured-copy .lab-featured-subtitle { font-size: 13px; color: var(--lab-ink); margin-bottom: 13px; }
.lab-featured-copy > p { color: var(--lab-muted); font-size: 12px; line-height: 1.9; }
.lab-tags { display: flex; flex-wrap: wrap; gap: 7px; margin: 16px 0; }
.lab-tags span { padding: 3px 9px; color: var(--lab-muted); background: var(--lab-soft); font-size: 10px; line-height: 1.6; border-radius: 5px; }
.lab-experiment-callout { display: flex; align-items: center; gap: 20px; padding: 20px 24px; margin-top: 16px; border: 1px solid var(--lab-border); border-radius: 14px; background: linear-gradient(105deg,var(--lab-soft),var(--lab-surface)); transition: border-color .2s; }
.lab-experiment-callout:hover { border-color: var(--lab-accent); }
.lab-callout-icon { color: var(--lab-accent); font-size: 40px; line-height: 1; }
.lab-experiment-callout strong { font-size: 13px; font-weight: 600; }
.lab-experiment-callout p { font-size: 11px; color: var(--lab-muted); margin-top: 3px; }
.lab-callout-link { margin-left: auto; font-size: 11px; color: var(--lab-accent); white-space: nowrap; }
.lab-post-grid { display: grid; grid-template-columns: repeat(3,minmax(0,1fr)); gap: 20px; }
.lab-post-card { overflow: hidden; border-radius: 15px; background: var(--lab-surface); border: 1px solid var(--lab-border); transition: transform .2s,box-shadow .2s; }
.lab-post-card:hover { transform: translateY(-3px); box-shadow: var(--lab-shadow); }
.lab-post-image { display: block; aspect-ratio: 16/8; overflow: hidden; background: var(--lab-soft); }
.lab-post-image img { width: 100%; height: 100%; object-fit: cover; transition: transform .4s; }
.lab-post-card:hover .lab-post-image img { transform: scale(1.035); }
.lab-post-body { padding: 19px 20px 15px; }
.lab-post-meta { display: flex; gap: 10px; justify-content: space-between; align-items: center; color: var(--lab-muted); font-size: 9px; }
.lab-chip { display: inline-block; border-radius: 5px; padding: 2px 7px; font-size: 9px; color: var(--lab-accent); background: var(--lab-soft); line-height: 1.7; }
.lab-post-card h3 { margin: 10px 0; font-size: 15px; line-height: 1.65; min-height: 49px; }
.lab-post-card h3 a:hover { color: var(--lab-accent); }
.lab-post-body > p { color: var(--lab-muted); font-size: 11px; line-height: 1.85; display: -webkit-box; -webkit-box-orient: vertical; -webkit-line-clamp: 3; overflow: hidden; min-height: 61px; }
.lab-post-foot { display: flex; justify-content: space-between; align-items: center; gap: 8px; margin-top: 17px; border-top: 1px solid var(--lab-border); padding-top: 12px; color: var(--lab-muted); font-size: 9px; }
.lab-post-foot > span:first-child { overflow: hidden; text-overflow: ellipsis; white-space: nowrap; }
.lab-post-foot > span:last-child { color: var(--lab-accent); font-size: 17px; }
.lab-home #pagination { margin-top: 32px; }
#pagination .page-number,#pagination .extend { border-radius: 9px; }
.lab-page-intro { padding: 24px 0 34px; max-width: 790px; }
.lab-page-intro > a { display: inline-block; margin-bottom: 22px; }
.lab-page-intro h1 { font-size: clamp(28px,3.5vw,39px); margin: 11px 0 15px; line-height: 1.5; letter-spacing: .5px; }
.lab-page-intro p { color: var(--lab-muted); font-size: 14px; line-height: 1.95; max-width: 690px; }
.lab-route-nav { display: flex; flex-wrap: wrap; gap: 9px; padding-bottom: 22px; }
.lab-route-nav a { padding: 8px 14px; border-radius: 8px; border: 1px solid var(--lab-border); background: var(--lab-surface); font-size: 12px; }
.lab-route-nav a:hover { color: var(--lab-accent); border-color: var(--lab-accent); }
.lab-map-note { display: flex; gap: 12px; align-items: center; padding: 16px 20px; background: var(--lab-soft); color: var(--lab-muted); border: 1px solid var(--lab-border); border-radius: 12px; font-size: 12px; line-height: 1.9; }
.lab-map-note > span { font-size: 24px; color: var(--lab-accent); }
.lab-route { scroll-margin-top: 100px; padding: 28px; margin-top: 28px; background: var(--lab-surface); border: 1px solid var(--lab-border); border-radius: var(--lab-radius); }
.lab-route-heading { display: flex; align-items: center; justify-content: space-between; gap: 20px; margin-bottom: 21px; }
.lab-route-title { display: flex; align-items: center; gap: 14px; }
.lab-route-title .lab-eyebrow { font-size: 10px; letter-spacing: 1px; }
.lab-route-title h2 { font-size: 21px; margin: 2px 0 0; line-height: 1.6; }
.lab-route-progress { display: flex; align-items: center; gap: 12px; white-space: nowrap; font-size: 11px; color: var(--tone-ink); }
.lab-reset { background: none; border: 0; border-bottom: 1px solid var(--lab-border); padding: 4px 2px; color: var(--lab-muted); font-size: 11px; cursor: pointer; }
.lab-reset:hover { color: var(--lab-accent); }
.lab-node-list { padding: 0; margin: 0; list-style: none; }
.lab-node { position: relative; display: flex; align-items: flex-start; gap: 18px; padding: 20px 0; border-top: 1px solid var(--lab-border); }
.lab-node-number { flex-shrink: 0; display: grid; place-items: center; width: 32px; height: 32px; border-radius: 50%; color: var(--tone-ink); background: var(--tone-bg); font-size: 11px; font-weight: 600; margin-top: 3px; }
.lab-node:not(:last-child) .lab-node-number:after { content: ''; position: absolute; left: 16px; top: 59px; bottom: -17px; width: 1px; background: var(--lab-border); }
.lab-node-content { flex: 1; min-width: 0; }
.lab-node-header { display: flex; flex-wrap: wrap; align-items: center; gap: 12px; }
.lab-node-header > a { font-size: 16px; font-weight: 650; }
.lab-node-header > a:hover { color: var(--lab-accent); }
.lab-node-content p { color: var(--lab-muted); font-size: 12px; line-height: 1.9; margin-top: 3px; }
.lab-node-content small { display: block; color: var(--lab-muted); font-size: 10px; margin-top: 4px; opacity: .85; }
.lab-read-toggle { display: flex; flex-shrink: 0; align-items: center; gap: 6px; padding: 7px 10px; background: var(--lab-soft); border-radius: 6px; font-size: 11px; color: var(--lab-muted); cursor: pointer; }
.lab-read-toggle input { width: 14px; height: 14px; accent-color: var(--lab-accent); cursor: pointer; }
.lab-node.is-read .lab-node-number { background: var(--tone-ink); color: var(--lab-surface); }
.lab-node.is-read .lab-read-toggle { color: var(--lab-accent); }
.lab-map-footer { padding: 30px 0 0; font-size: 12px; color: var(--lab-muted); }
.lab-project-grid { display: grid; grid-template-columns: repeat(2,minmax(0,1fr)); gap: 24px; }
.lab-project-card { border: 1px solid var(--lab-border); border-radius: var(--lab-radius); overflow: hidden; background: var(--lab-surface); }
.lab-project-image { display: block; position: relative; height: 245px; overflow: hidden; }
.lab-project-image img { width: 100%; height: 100%; object-fit: cover; transition: transform .4s; }
.lab-project-card:hover .lab-project-image img { transform: scale(1.035); }
.lab-project-body { padding: 26px 28px; }
.lab-project-status { color: var(--lab-accent); font-size: 10px; }
.lab-project-body h2 { margin: 7px 0 2px; font-size: 25px; line-height: 1.6; }
.lab-project-body h2 a:hover { color: var(--lab-accent); }
.lab-project-body > p { color: var(--lab-muted); font-size: 12px; line-height: 1.9; }
.lab-project-body .lab-project-kicker { color: var(--lab-ink); font-size: 13px; margin-bottom: 12px; }
.lab-project-links { display: flex; flex-wrap: wrap; gap: 20px; padding-top: 8px; }
.lab-closing-card { display: flex; align-items: center; gap: 16px; padding: 24px; margin-top: 34px; border-radius: 14px; background: var(--lab-soft); color: var(--lab-muted); }
.lab-closing-card > span { color: var(--lab-accent); font-size: 25px; }
.lab-closing-card > p { flex: 1; font-size: 12px; }
.lab-companion-hero { position: relative; overflow: hidden; border-radius: var(--lab-radius); height: 410px; }
.lab-companion-hero > img { width: 100%; height: 100%; object-fit: cover; object-position: 60% 47%; }
.lab-companion-hero > .lab-image-badge { top: auto; bottom: 18px; letter-spacing: 0; font-size: 10px; }
.lab-detail-grid { display: grid; grid-template-columns: 1fr 1fr; gap: 24px; margin-top: 28px; }
.lab-detail-panel { padding: 28px; border: 1px solid var(--lab-border); border-radius: 15px; background: var(--lab-surface); }
.lab-detail-panel h2 { font-size: 20px; margin: 7px 0 14px; }
.lab-detail-panel p { font-size: 13px; line-height: 1.95; color: var(--lab-muted); }
.lab-detail-panel p + p { margin-top: 12px; }
.lab-feature-list { padding-left: 20px; margin: 0 0 16px; font-size: 13px; line-height: 2.3; }
.lab-detail-panel .lab-small-note { font-size: 11px; }
.lab-architecture { border: 1px solid var(--lab-border); border-radius: 15px; background: #fff; overflow: auto; padding: 18px; }
.lab-architecture img { display: block; width: 100%; min-width: 650px; height: auto; }
.lab-journal { border: 1px solid var(--lab-border); border-radius: 15px; background: var(--lab-surface); overflow: hidden; }
.lab-journal-entry { display: flex; gap: 24px; align-items: center; padding: 22px 26px; }
.lab-journal-entry + .lab-journal-entry { border-top: 1px solid var(--lab-border); }
.lab-journal-entry:hover { background: var(--lab-soft); }
.lab-journal-label { color: var(--lab-accent); font-size: 12px; white-space: nowrap; }
.lab-journal-entry > div { flex: 1; }
.lab-journal-entry h3 { font-size: 14px; margin: 0 0 4px; line-height: 1.8; }
.lab-journal-entry p { color: var(--lab-muted); font-size: 11px; }
.lab-journal-entry > span:last-child { color: var(--lab-accent); }
.lab-experiment { padding: 28px; border: 1px solid var(--lab-border); border-radius: var(--lab-radius); background: var(--lab-surface); }
.lab-experiment-heading h2 { margin: 10px 0 8px; font-size: 24px; }
.lab-experiment-heading p { color: var(--lab-muted); font-size: 13px; }
.lab-experiment-layout { display: grid; grid-template-columns: 1.65fr 1fr; gap: 26px; margin-top: 24px; align-items: start; }
.lab-plot-wrap { background: var(--lab-soft); border-radius: 13px; padding: 14px 10px; }
.lab-plot { display: block; width: 100%; height: auto; }
.lab-plot-grid { stroke: var(--lab-border); stroke-width: 1; }
.lab-plot-axis { stroke: var(--lab-muted); stroke-width: 1; }
.lab-plot-curve { stroke: var(--lab-accent); stroke-width: 2.5; }
.lab-plot-path { stroke: #dba0b5; stroke-width: 1.5; stroke-dasharray: 4 4; }
.lab-plot-point { fill: #c68fa8; stroke: var(--lab-surface); stroke-width: 1.5; }
.lab-plot-point-current { fill: var(--lab-accent); stroke: var(--lab-surface); stroke-width: 2; }
.lab-axis-label,.lab-tick { fill: var(--lab-muted); font-size: 12px; }
.lab-plot-legend { display: flex; flex-wrap: wrap; gap: 15px; padding: 0 12px; color: var(--lab-muted); font-size: 10px; }
.lab-plot-legend span { display: flex; gap: 6px; align-items: center; }
.lab-legend-line { display: inline-block; width: 16px; height: 2px; background: var(--lab-accent); }
.lab-legend-dot { display: inline-block; width: 6px; height: 6px; border-radius: 50%; background: #c68fa8; }
.lab-controls label { display: flex; justify-content: space-between; color: var(--lab-ink); font-size: 12px; font-weight: 600; }
.lab-controls output { color: var(--lab-accent); }
.lab-controls input[type='range'] { width: 100%; margin: 12px 0; accent-color: #8970c0; cursor: pointer; }
.lab-rate-scale { display: flex; justify-content: space-between; font-size: 9px; color: var(--lab-muted); margin-bottom: 23px; }
.lab-controls .lab-actions { gap: 8px; margin-top: 12px; }
.lab-controls .lab-button { padding: 10px 14px; }
.lab-result { margin-top: 22px; padding: 14px; background: var(--lab-soft); border-radius: 10px; min-height: 95px; }
.lab-result strong { display: block; color: var(--lab-accent); font-size: 13px; }
.lab-result p { color: var(--lab-muted); font-size: 11px; line-height: 1.9; margin-top: 3px; }
.lab-metrics { display: grid; grid-template-columns: repeat(3,minmax(0,1fr)); gap: 8px; margin: 16px 0 0; }
.lab-metrics dt { color: var(--lab-muted); font-size: 10px; }
.lab-metrics dd { margin: 0; font-size: 15px; font-variant-numeric: tabular-nums; color: var(--lab-accent); }
.lab-experiment-note { padding-top: 24px; margin-top: 24px; border-top: 1px solid var(--lab-border); }
.lab-experiment-note p { font-size: 12px; color: var(--lab-muted); line-height: 1.95; margin-bottom: 10px; }
#post,#page,#archive,.card-widget,.recent-post-item { border: 1px solid var(--lab-border); border-radius: 15px; box-shadow: var(--lab-shadow); }
#post { padding: 38px 40px; }
#post #post-info { margin-bottom: 28px; padding-bottom: 25px; border-bottom: 1px solid var(--lab-border); }
.lab-article-cover { aspect-ratio: 16/7; overflow: hidden; border-radius: 12px; margin-bottom: 30px; background: var(--lab-soft); }
.lab-article-cover img { display: block; width: 100%; height: 100%; object-fit: cover; }
#post .post-title { font-size: 29px; font-weight: 700; line-height: 1.6; }
#article-container { font-size: 15px; line-height: 2; }
#article-container h2 { padding-top: 10px; margin-top: 35px; }
#article-container p { margin: 16px 0; }
#article-container a { color: var(--lab-accent); }
#article-container pre,#article-container figure.highlight { border: 1px solid var(--lab-border); border-radius: 10px; }
#article-container blockquote { border-radius: 0 10px 10px 0; background: var(--lab-soft); }
#article-container table th { background: var(--lab-soft); }
#article-container img { border-radius: 10px; }
#aside-content .card-info .author-info__name { font-weight: 750; }
#aside-content .card-info .author-info__description { color: var(--lab-muted); line-height: 1.9; font-size: 12px; }
#aside-content .card-info .avatar-img img { border-radius: 24px; }
#aside-content .card-widget { padding: 22px; }
#aside-content .item-headline { font-size: 14px; }
#footer { color: var(--lab-muted); background: var(--lab-surface); border-top: 1px solid var(--lab-border); }
#footer:before { display: none; }
#footer .footer-other { padding: 28px 16px; font-size: 10px; color: var(--lab-muted); }
#footer a { color: var(--lab-accent); }
.footer_custom_text { color: var(--lab-muted); font-size: 10px; letter-spacing: 1px; margin-top: 5px; }
#local-search .search-dialog { border: 1px solid var(--lab-border); border-radius: 17px; background: var(--lab-surface); }
.lab-home a:focus-visible,.lab-page a:focus-visible,button:focus-visible,input:focus-visible,#nav a:focus-visible { outline: 2px solid var(--lab-accent); outline-offset: 4px; }
@media (max-width: 1050px) {
  #nav .menus_items .menus_item { padding-left: 15px; }
  .lab-hero { gap: 25px; }
  .lab-track-grid,.lab-post-grid { grid-template-columns: repeat(2,minmax(0,1fr)); }
  .lab-track-card p { font-size: 12px; }
  .lab-hero-topics { font-size: 8px; }
  .lab-stat { min-width: 76px; padding-left: 16px; }
}
@media (max-width: 768px) {
  #page-header.not-top-img,#page-header.not-top-img #nav { height: 65px; }
  #page-header.not-top-img #nav { padding: 0 20px; }
  #nav .site-page { font-size: 13px; }
  #content-inner.layout { padding: 22px 18px 45px; }
  .lab-hero { grid-template-columns: 1fr; gap: 25px; padding: 6px 0 25px; }
  .lab-hero-copy { padding: 6px 4px 0; }
  .lab-status { margin-bottom: 18px; }
  .lab-hero h1 { font-size: 43px; margin-top: 9px; }
  .lab-hero h1 br { display: none; }
  .lab-heading-star { font-size: 24px; margin-left: 8px; }
  .lab-hero-description { max-width: 500px; }
  .lab-hero-topics { margin-top: 19px; }
  .lab-hero-art { aspect-ratio: 1.65; border-radius: 20px 20px 45px 20px; }
  .lab-overview { flex-wrap: wrap; justify-content: space-between; gap: 16px; padding: 17px 20px; }
  .lab-focus { flex-basis: 100%; }
  .lab-stat { flex: 1; min-width: 0; padding: 13px 0 0; border-left: none; border-top: 1px solid var(--lab-border); }
  .lab-section { margin-top: 34px; }
  .lab-section-heading h2 { font-size: 19px; }
  .lab-section-heading { align-items: center; gap: 10px; }
  .lab-section-heading .lab-text-link { font-size: 10px; }
  .lab-eyebrow { font-size: 8px; letter-spacing: 1.7px; }
  .lab-track-card { padding: 16px 14px; }
  .lab-featured-copy { padding: 24px; }
  .lab-featured { grid-template-columns: 1fr; }
  .lab-featured-art { min-height: 230px; }
  .lab-featured-copy h3 { font-size: 25px; }
  .lab-experiment-callout { flex-wrap: wrap; gap: 13px; padding: 18px; }
  .lab-experiment-callout > div { flex: 1; }
  .lab-callout-link { flex-basis: 100%; padding-left: 43px; }
  .lab-post-grid { gap: 14px; }
  .lab-post-body { padding: 15px; }
  .lab-post-card h3 { font-size: 14px; }
  .lab-post-meta { flex-wrap: wrap; gap: 3px; }
  .lab-page-intro { padding: 12px 0 26px; }
  .lab-page-intro h1 { font-size: 28px; }
  .lab-page-intro p { font-size: 13px; }
  .lab-route { padding: 20px 18px; }
  .lab-route-heading { align-items: flex-start; flex-direction: column; gap: 13px; }
  .lab-route-title h2 { font-size: 19px; }
  .lab-route-progress { align-self: flex-end; }
  .lab-node { gap: 12px; flex-wrap: wrap; }
  .lab-node-content { flex-basis: calc(100% - 50px); }
  .lab-node-header > a { font-size: 15px; }
  .lab-read-toggle { margin-left: 44px; padding: 6px 10px; }
  .lab-project-grid,.lab-detail-grid { grid-template-columns: 1fr; }
  .lab-project-image { height: 220px; }
  .lab-project-body { padding: 23px; }
  .lab-closing-card { flex-wrap: wrap; padding: 20px; }
  .lab-closing-card > a { padding-left: 38px; }
  .lab-companion-hero { height: 285px; }
  .lab-detail-panel { padding: 22px; }
  .lab-journal-entry { flex-wrap: wrap; gap: 9px; padding: 20px; }
  .lab-journal-label { flex-basis: 100%; }
  .lab-experiment { padding: 22px 16px; }
  .lab-experiment-layout { grid-template-columns: 1fr; }
  #post { padding: 26px 20px; }
  #post .post-title { font-size: 23px; }
  #article-container { font-size: 14px; }
  .lab-theme-toggle { margin-left: 10px; width: 30px; height: 30px; }
}
@media (max-width: 480px) {
  .lab-hero h1 { font-size: 35px; }
  .lab-hero h1 br { display: block; }
  .lab-art-caption { left: 18px; bottom: 18px; }
  .lab-art-caption strong { font-size: 11px; }
  .lab-art-caption small { font-size: 7px; letter-spacing: 1.3px; }
  .lab-track-grid { gap: 10px; }
  .lab-track-card h3 { font-size: 13px; }
  .lab-track-card p { font-size: 10px; }
  .lab-track-count { font-size: 8px; }
  .lab-track-icon { width: 33px; height: 33px; font-size: 20px; }
  .lab-track-bottom { font-size: 8px; }
  .lab-post-grid { grid-template-columns: 1fr; }
  .lab-post-image { aspect-ratio: 16/7; }
  .lab-post-card h3 { min-height: 0; font-size: 16px; }
  .lab-post-body > p { min-height: 0; }
  .lab-post-meta { flex-wrap: nowrap; }
  .lab-section-heading .lab-text-link { font-size: 9px; }
  .lab-section-heading h2 { font-size: 18px; }
  .lab-map-note { padding: 14px; }
  .lab-route-title { gap: 10px; }
}
@media (prefers-reduced-motion: reduce) {
  html { scroll-behavior: auto; }
  *,*:before,*:after { animation-duration: .01ms !important; animation-iteration-count: 1 !important; transition-duration: .01ms !important; }
}

/* css/ai-lab.css */
/* Readable type and restrained movement for the blog and local AI examples. */
:root { --lab-bg:#f7f8fb; --lab-soft:#f0f1f7; --lab-accent:#6973a7; --lab-accent-dark:#505e94; --lab-ink:#2d3543; --lab-muted:#687180; }
[data-theme='dark'] { --lab-bg:#171b24; --lab-soft:#282e3e; --lab-surface:#202633; --lab-ink:#e4e9f2; --lab-muted:#b0bac9; --lab-border:#353e50; --lab-accent:#b3bee9; --lab-accent-dark:#c5cff3; }
body,button,input,textarea,select { font-family:-apple-system,BlinkMacSystemFont,"Segoe UI","Microsoft YaHei","PingFang SC","Noto Sans CJK SC",Arial,sans-serif; font-weight:400; }
body { font-size:16px; }
h1,h2,h3,.site-name { font-family:inherit; letter-spacing:0; text-shadow:none; }
.lab-home h1,.lab-home h2,.lab-home h3,.lab-page h1,.lab-page h2,.lab-page h3,#post .post-title { font-weight:600; }
.lab-hero { grid-template-columns:.85fr 1.15fr; gap:42px; }
.lab-hero h1 { font-size:52px; font-weight:600; letter-spacing:-1px; margin:16px 0 8px; }
.lab-hero-tagline { font-size:24px; letter-spacing:0; }
.lab-hero-description { max-width:440px; font-size:16px; line-height:1.95; }
.lab-status { font-size:14px; margin-bottom:14px; }
.lab-eyebrow { font-size:14px; letter-spacing:0; font-weight:400; }
.lab-hero-art { aspect-ratio:1.45; border-radius:18px; box-shadow:0 12px 30px rgba(49,60,90,.08); }
.lab-hero-art:after { display:none; }
.lab-hero-art img { object-position:50% center; transition:transform .7s cubic-bezier(.22,1,.36,1); }
.lab-hero-art:hover img { transform:scale(1.025); }
.lab-focus p,.lab-stat span { font-size:14px; }
.lab-focus small { font-size:13px; letter-spacing:0; }
.lab-stat strong { font-size:25px; }
.lab-section-heading h2 { font-size:25px; letter-spacing:0; }
.lab-section-heading { align-items:center; }
.lab-home .lab-text-link,.lab-page .lab-text-link { font-size:14px; }
.lab-button { font-size:15px; min-height:44px; padding:11px 19px; font-weight:500; }
.lab-track-card { padding:22px 18px 18px; }
.lab-track-top { flex-wrap:wrap; }
.lab-track-count { font-size:13px; }
.lab-track-card h3 { font-size:17px; }
.lab-track-card p { font-size:14px; }
.lab-track-bottom { font-size:13px; }
.lab-post-card h3 { font-size:18px; min-height:59px; }
.lab-post-body > p { font-size:15px; min-height:84px; }
.lab-post-meta,.lab-post-foot,.lab-chip { font-size:13px; }
.lab-post-foot { gap:12px; }
.lab-featured-copy > p,.lab-featured-copy .lab-featured-subtitle { font-size:16px; }
.lab-tags span { font-size:13px; }
.lab-experiment-callout strong { font-size:17px; }
.lab-experiment-callout p,.lab-callout-link { font-size:14px; }
.lab-page-intro h1 { font-size:36px; }
.lab-page-intro p { font-size:16px; }
.lab-node-content p,.lab-route-nav a { font-size:15px; }
.lab-route-title .lab-eyebrow { font-size:14px; letter-spacing:0; }
.lab-node-number { font-size:13px; }
.lab-node-content small,.lab-node-header .lab-chip,.lab-read-toggle,.lab-reset,.lab-route-progress { font-size:13px; }
.lab-node-header > a { font-size:18px; }
.lab-map-note,.lab-map-footer,.lab-closing-card > p { font-size:15px; }
.lab-project-body > p,.lab-project-body .lab-project-kicker { font-size:16px; }
.lab-project-status,.lab-image-badge { font-size:13px; letter-spacing:0; }
.lab-detail-panel p,.lab-feature-list { font-size:16px; }
.lab-detail-panel .lab-small-note { font-size:14px; }
.lab-journal-entry h3 { font-size:17px; }
.lab-journal-entry p,.lab-journal-label { font-size:14px; }
#article-container { font-size:16px; }
#post .post-title { font-size:29px; }
#aside-content .card-info .author-info__description { font-size:14px; }
#footer .footer-other,.footer_custom_text { font-size:13px; letter-spacing:0; }
.lab-section-heading .lab-text-link { font-size:14px; }
.ai-reveal { opacity:0; transform:translateY(14px); transition:opacity .5s ease var(--reveal-delay,0ms),transform .6s cubic-bezier(.22,1,.36,1) var(--reveal-delay,0ms),box-shadow .25s; }
.ai-reveal.is-visible { opacity:1; transform:none; }
.lab-post-card:hover,.lab-project-card:hover,.lab-track-card:hover { transform:translateY(-4px); box-shadow:0 12px 28px rgba(45,56,91,.08); }
.ai-tabs { display:flex; flex-wrap:wrap; gap:8px; margin:0 0 24px; padding:6px; background:var(--lab-surface); border:1px solid var(--lab-border); border-radius:12px; }
.ai-tab { flex:1 1 140px; border:0; border-radius:8px; padding:12px 15px; font-size:15px; color:var(--lab-muted); background:none; cursor:pointer; transition:background .2s,color .2s; }
.ai-tab[aria-selected='true'] { color:var(--lab-accent); background:var(--lab-soft); font-weight:600; }
.ai-panel[hidden] { display:none; }
.ai-panel:not([hidden]) { animation:ai-panel-enter .35s cubic-bezier(.22,1,.36,1); }
.lab-experiment-heading h2 { font-size:25px; margin:0 0 12px; }
.lab-experiment-heading p { font-size:15px; line-height:1.9; max-width:880px; }
.lab-controls label { font-size:15px; gap:12px; }
.lab-controls input[type='range'] { margin:14px 0 24px; min-height:20px; }
.lab-controls .lab-actions { gap:10px; }
.lab-controls .lab-button { font-size:14px; }
.lab-result strong { font-size:16px; }
.lab-result p,.lab-experiment-note p { font-size:14px; }
.lab-metrics { gap:12px; margin-top:22px; }
.lab-metrics dt { font-size:13px; }
.lab-metrics dd { font-size:18px; }
.lab-rate-scale,.lab-plot-legend { font-size:13px; }
.lab-plot-legend { line-height:1.9; }
.lab-plot-point-current { filter:drop-shadow(0 1px 3px rgba(96,91,170,.25)); }
.ai-workspace { display:grid; grid-template-columns:minmax(0,1.55fr) minmax(270px,1fr); gap:28px; margin-top:28px; align-items:start; }
.ai-visual { min-width:0; padding:22px; background:var(--lab-soft); border-radius:12px; }
.ai-controls { min-width:0; padding:4px 0; }
.ai-prompt { font-size:20px; line-height:1.8; padding-bottom:20px; }
.ai-prompt strong { color:var(--lab-accent); display:inline-block; min-width:40px; }
.ai-chart-header { display:grid; grid-template-columns:45px minmax(0,1fr) 67px; gap:12px; font-size:13px; color:var(--lab-muted); border-bottom:1px solid var(--lab-border); padding-bottom:12px; }
.ai-token-row { display:grid; grid-template-columns:45px minmax(0,1fr) 67px; align-items:center; gap:12px; padding:16px 0; border-bottom:1px solid var(--lab-border); transition:background .2s; }
.ai-token-row > strong { font-size:19px; font-weight:500; }
.ai-token-row.is-sampled > strong { color:var(--lab-accent); animation:ai-token-pop .3s ease; }
.ai-token-row.is-muted { opacity:.55; }
.ai-logit { width:67px; min-height:38px; border:1px solid var(--lab-border); border-radius:6px; background:var(--lab-surface); color:var(--lab-ink); font-size:14px; text-align:center; }
.ai-bar-track { height:10px; overflow:hidden; border-radius:5px; background:color-mix(in srgb,var(--lab-muted) 13%,transparent); }
.ai-bar-fill { height:100%; background:#817bba; border-radius:5px; transition:width .3s cubic-bezier(.22,1,.36,1); }
.ai-bar-observed { height:5px; margin-top:6px; }
.ai-bar-observed .ai-bar-fill { background:#91b9d6; }
.ai-bar-label { display:block; color:var(--lab-muted); font-size:13px; margin-top:6px; }
.ai-legend { display:flex; align-items:center; flex-wrap:wrap; gap:16px; color:var(--lab-muted); font-size:13px; margin-top:18px; line-height:1.8; }
.ai-legend span { display:flex; align-items:center; gap:7px; }
.ai-legend-purple,.ai-legend-blue { display:inline-block; width:10px; height:10px; background:#817bba; border-radius:3px; }
.ai-legend-blue { background:#91b9d6; }
.ai-formula { margin-top:22px; padding:14px; border-radius:8px; background:var(--lab-soft); color:var(--lab-accent); font-family:Consolas,monospace; font-size:15px; }
.ai-sentence,.ai-presets { display:flex; gap:8px; flex-wrap:wrap; margin-bottom:20px; }
.ai-word,.ai-preset { border:1px solid var(--lab-border); border-radius:7px; color:var(--lab-ink); background:var(--lab-surface); padding:8px 13px; cursor:pointer; font-size:14px; transition:background .2s,border-color .2s; }
.ai-word[aria-pressed='true'],.ai-preset[aria-pressed='true'] { background:var(--lab-accent); border-color:var(--lab-accent); color:var(--lab-surface); }
.ai-attention-grid { display:grid; grid-template-columns:85px repeat(4,minmax(60px,1fr)); gap:5px; overflow-x:auto; }
.ai-matrix-label,.ai-matrix-corner { font-size:13px; display:flex; align-items:center; justify-content:center; min-height:40px; }
.ai-matrix-label { color:var(--lab-muted); }
.ai-matrix-cell { min-height:53px; border:1px solid transparent; border-radius:6px; color:var(--lab-ink); font-size:15px; cursor:pointer; transition:background-color .3s; }
.ai-matrix-cell.is-query-row { border-color:var(--lab-accent); }
.ai-matrix-cell.is-masked { color:var(--lab-muted); }
.ai-attention-details { margin-top:24px; }
.ai-attention-details > strong { font-size:15px; font-weight:500; }
.ai-score-list { margin-top:8px; }
.ai-score-row { display:flex; gap:12px; justify-content:space-between; font-size:13px; padding:9px 0; color:var(--lab-muted); border-bottom:1px solid var(--lab-border); }
.ai-score-row strong { color:var(--lab-accent); font-weight:500; }
.ai-check { display:flex; align-items:center; justify-content:flex-start; gap:10px !important; }
.ai-check input { width:17px; height:17px; accent-color:var(--lab-accent); }
.ai-rag-query { margin-top:24px; }
.ai-rag-query label { font-size:14px; display:block; margin-bottom:8px; }
.ai-rag-query > input { width:100%; padding:13px 15px; font-size:16px; border:1px solid var(--lab-border); border-radius:8px; color:var(--lab-ink); background:var(--lab-surface); }
.ai-rag-query .ai-presets { margin:12px 0 0; }
.ai-pipeline { --pipeline-progress:0; position:relative; padding:0; margin:0 0 22px; display:flex; justify-content:space-between; gap:12px; list-style:none; }
.ai-pipeline:before { content:''; position:absolute; height:2px; top:23px; left:5px; right:5px; background:var(--lab-border); }
.ai-pipeline:after { content:''; position:absolute; height:2px; top:23px; left:5px; width:calc((100% - 10px) * var(--pipeline-progress)); background:var(--lab-accent); transition:width .45s ease; }
.ai-pipeline li { z-index:1; border:1px solid var(--lab-border); padding:11px 12px; border-radius:8px; color:var(--lab-muted); background:var(--lab-surface); font-size:13px; transition:background .3s,transform .3s,border-color .3s; }
.ai-pipeline li.is-active { border-color:var(--lab-accent); color:var(--lab-accent); transform:translateY(-3px); }
.ai-pipeline li.is-complete { color:var(--lab-accent); background:var(--lab-soft); border-color:var(--lab-accent); }
.ai-retrieval-card { background:var(--lab-surface); border:1px solid var(--lab-border); border-radius:9px; padding:15px; margin-top:10px; animation:ai-panel-enter .25s ease; }
.ai-retrieval-heading { display:flex; justify-content:space-between; gap:12px; align-items:center; margin-bottom:10px; }
.ai-retrieval-heading strong { font-size:15px; font-weight:500; }
.ai-retrieval-heading span { font-size:13px; color:var(--lab-muted); }
.ai-retrieval-card p { font-size:14px; color:var(--lab-muted); margin-top:10px; line-height:1.9; }
.ai-context-heading { display:flex; justify-content:space-between; align-items:center; gap:12px; margin:24px 0 10px; }
.ai-context-heading strong { font-size:15px; font-weight:500; }
.ai-context-heading span { font-size:13px; color:var(--lab-muted); }
.ai-context { white-space:pre-wrap; overflow-wrap:anywhere; margin:0; background:var(--lab-surface); color:var(--lab-ink); border:1px solid var(--lab-border); border-radius:8px; padding:15px; font-family:inherit; font-size:14px; line-height:1.9; }
.ai-empty { font-size:14px; line-height:1.9; color:var(--lab-muted); }
.ai-boundary,.ai-loss-chart { width:100%; display:block; }
.ai-boundary rect { transition:fill .12s linear; }
.ai-grid-axis { fill:none; stroke:rgba(80,85,115,.5); stroke-width:1; }
.ai-loss-chart { height:90px; margin-top:18px; border-top:1px solid var(--lab-border); }
.ai-loss-chart path { stroke:var(--lab-accent); stroke-width:2.5; }
.ai-chart-caption { display:flex; justify-content:space-between; gap:12px; font-size:13px; color:var(--lab-muted); margin-top:8px; }
.ai-network-predictions { margin-top:20px; }
.ai-tab:focus-visible,.ai-word:focus-visible,.ai-preset:focus-visible,.ai-matrix-cell:focus-visible { outline:2px solid var(--lab-accent); outline-offset:3px; }
@keyframes ai-panel-enter { from {opacity:.3;transform:translateY(8px);} to {opacity:1;transform:none;} }
@keyframes ai-token-pop { 50% {transform:translateY(-2px);} }
@media(max-width:1000px) { .ai-workspace { grid-template-columns:1fr; } .ai-controls { padding-top:10px; } .lab-track-grid { grid-template-columns:repeat(2,minmax(0,1fr)); } }
@media(max-width:768px) {
  .lab-hero { grid-template-columns:1fr; gap:25px; }
  .lab-hero h1 { font-size:42px; }
  .lab-hero-tagline { font-size:22px; }
  .lab-hero-description,.lab-page-intro p { font-size:16px; }
  .lab-section-heading h2 { font-size:23px; }
  .lab-page-intro h1 { font-size:29px; }
  .lab-track-card h3 { font-size:17px; }
  .lab-track-card p { font-size:14px; }
  .lab-section-heading .lab-text-link { font-size:13px; }
  .lab-hero-art { aspect-ratio:1.5; border-radius:15px; }
  .lab-post-card h3 { font-size:18px; }
  .lab-plot .lab-tick,.lab-plot .lab-axis-label { font-size:26px; }
  .ai-boundary .lab-axis-label { font-size:24px; }
  .lab-controls label { font-size:15px; }
  .lab-experiment { padding:22px 18px; }
  .lab-experiment-heading h2 { font-size:23px; }
  .ai-visual { padding:16px; }
  .ai-token-row,.ai-chart-header { grid-template-columns:32px minmax(0,1fr) 57px; gap:8px; }
  .ai-logit { width:57px; }
  .ai-attention-grid { grid-template-columns:65px repeat(4,minmax(46px,1fr)); gap:3px; }
  .ai-matrix-label,.ai-matrix-corner { font-size:13px; }
  .ai-matrix-cell { min-height:46px; font-size:13px; }
  .ai-pipeline { gap:6px; }
  .ai-pipeline li { padding:11px 8px; font-size:13px; }
  .ai-retrieval-heading { flex-wrap:wrap; gap:6px; }
  .lab-experiment-callout { align-items:flex-start; }
  .lab-experiment-callout p { font-size:14px; }
  .lab-callout-link { font-size:14px; }
  #article-container { font-size:16px; }
  .lab-metrics dd { font-size:17px; }
  .lab-post-image { aspect-ratio:16/8; }
}
@media(max-width:480px) { .lab-track-grid { grid-template-columns:1fr; } .lab-track-bottom { font-size:13px; } .lab-track-count { font-size:13px; } .lab-track-card p { font-size:15px; } .lab-track-top { flex-wrap:nowrap; } }
@media(prefers-reduced-motion:reduce) { .ai-reveal {opacity:1;transform:none;} .ai-panel,.ai-retrieval-card {animation:none;} .ai-bar-fill,.ai-pipeline:after,.ai-boundary rect {transition:none;} }

/* css/home-motion.css */
/* Fluid homepage with local, optional interactive previews. */
body.lab-homepage { --home-gutter:clamp(16px,2vw,40px); }
#content-inner.layout.lab-home-layout { max-width:none; width:100%; padding:34px var(--home-gutter) 70px; }
body.lab-homepage #page-header.not-top-img #nav { padding:0 var(--home-gutter); }
body.lab-homepage #body-wrap { position:relative; z-index:1; }
.lab-home .lab-hero { grid-template-columns:.85fr 1.15fr; grid-template-areas:'copy art' 'demo art'; column-gap:clamp(28px,4vw,70px); row-gap:24px; padding-top:12px; }
.lab-home .lab-hero-copy { grid-area:copy; align-self:end; }
.lab-home .lab-hero-art { grid-area:art; align-self:stretch; min-height:440px; aspect-ratio:auto; }
.lab-home .lab-hero-art img { transform:translate3d(var(--art-x,0px),var(--art-y,0px),0) scale(1.045); transition:transform .16s linear; }
.lab-home .lab-hero-art:hover img { transform:translate3d(var(--art-x,0px),var(--art-y,0px),0) scale(1.045); }
.lab-home .lab-hero h1 { font-size:clamp(48px,4.4vw,76px); }
.lab-home .lab-hero-description { max-width:580px; font-size:17px; }
.lab-home .lab-hero-tagline { font-size:clamp(24px,2.1vw,30px); }
.home-preview { grid-area:demo; align-self:start; min-width:0; max-width:680px; border:1px solid var(--lab-border); border-radius:14px; background:var(--lab-surface); padding:17px 20px; }
.home-preview-header { display:flex; align-items:center; justify-content:space-between; gap:15px; font-size:14px; }
.home-preview-header strong { font-size:15px; font-weight:500; }
.home-preview-toggle { background:none; border:0; color:var(--lab-muted); cursor:pointer; padding:4px 0 4px 12px; min-height:32px; font-size:13px; }
.home-preview-sentence { font-size:20px; line-height:1.8; padding:9px 0 13px; }
.home-preview-sentence strong { color:var(--lab-accent); font-weight:600; display:inline-block; min-width:25px; }
.home-preview-sentence strong.is-changing { animation:home-word-enter .32s ease; }
.home-preview-candidates { display:grid; grid-template-columns:repeat(3,minmax(0,1fr)); gap:15px; }
.home-preview-candidate { display:grid; grid-template-columns:1fr auto; gap:6px; align-items:center; font-size:14px; color:var(--lab-muted); }
.home-preview-candidate.is-picked { color:var(--lab-accent); }
.home-preview-candidate i { grid-column:1/-1; height:5px; background:var(--lab-soft); border-radius:5px; overflow:hidden; }
.home-preview-candidate i span { display:block; height:100%; background:#9da5cd; width:0; border-radius:5px; transition:width .35s ease; }
.home-preview-controls { display:flex; align-items:center; flex-wrap:wrap; gap:10px; margin-top:15px; font-size:13px; }
.home-preview-controls label { display:flex; align-items:center; gap:9px; }
.home-preview-controls input { width:90px; min-height:24px; accent-color:var(--lab-accent); }
.home-preview-controls output { min-width:25px; }
.home-preview-step { border:1px solid var(--lab-border); background:var(--lab-soft); color:var(--lab-ink); border-radius:7px; font-size:13px; padding:6px 10px; min-height:34px; cursor:pointer; }
.home-preview-controls a { margin-left:auto; color:var(--lab-accent); font-size:13px; }
.home-preview-note { font-size:13px; color:var(--lab-muted); margin-top:9px !important; line-height:1.8; }
.home-preview :focus-visible { outline:2px solid var(--lab-accent); outline-offset:3px; }
.home-ambient { position:fixed; inset:0; overflow:hidden; pointer-events:none; z-index:0; }
.home-ambient:before,.home-ambient:after { content:''; position:absolute; width:48vw; height:55vh; border-radius:50%; filter:blur(70px); opacity:.34; background:radial-gradient(ellipse,rgba(158,167,222,.26),transparent 70%); animation:home-glow-drift 19s ease-in-out infinite alternate; }
.home-ambient:before { left:-10vw; top:8vh; }
.home-ambient:after { right:-8vw; bottom:2vh; background:radial-gradient(ellipse,rgba(209,167,195,.23),transparent 70%); animation-delay:-11s; }
.home-petal { position:absolute; top:-10vh; left:var(--petal-left); width:9px; height:16px; border-radius:85% 12% 80% 12%; background:rgba(168,151,199,.2); animation:home-petal-drift var(--petal-duration) linear var(--petal-delay) infinite; }
[data-theme='dark'] .home-petal { background:rgba(173,168,220,.18); }
.home-motion-paused .home-petal,.home-motion-paused .home-ambient:before,.home-motion-paused .home-ambient:after { animation-play-state:paused; }
.home-scroll-progress { position:fixed; top:0; left:0; height:3px; width:100%; transform:scaleX(0); transform-origin:left; z-index:1001; pointer-events:none; background:linear-gradient(90deg,#8b81be,#8bb5d4); transition:transform .12s linear; }
.lab-home .lab-orbit { animation:home-icon-float 5s ease-in-out infinite; }
.lab-home .lab-track-card,.lab-home .lab-post-card { position:relative; }
.lab-home .lab-track-card:after,.lab-home .lab-post-card:after { content:''; position:absolute; inset:0; border-radius:inherit; pointer-events:none; opacity:0; background:radial-gradient(300px circle at var(--pointer-x,50%) var(--pointer-y,50%),rgba(159,167,216,.13),transparent 70%); transition:opacity .25s ease; }
.lab-home .is-pointer-active:after { opacity:1; }
@keyframes home-petal-drift { 0% {transform:translate3d(0,0,0) rotate(20deg);} 50% {transform:translate3d(38px,62vh,0) rotate(155deg);} 100% {transform:translate3d(-20px,122vh,0) rotate(310deg);} }
@keyframes home-glow-drift { to {transform:translate3d(35px,-28px,0) scale(1.08);} }
@keyframes home-icon-float { 50% {transform:translateY(-4px) rotate(12deg);} }
@keyframes home-word-enter { from {opacity:.35;transform:translateY(5px);} to {opacity:1;transform:none;} }
@media(min-width:1600px) { .lab-home .lab-post-grid { grid-template-columns:repeat(4,minmax(0,1fr)); } .lab-home .lab-track-grid { gap:22px; } }
@media(max-width:1000px) { .lab-home .lab-hero { column-gap:28px; grid-template-columns:1fr 1fr; } .lab-home .lab-hero h1 { font-size:48px; } .home-preview { padding:14px 16px; } .home-preview-controls a { margin-left:0; } }
@media(max-width:768px) {
  #content-inner.layout.lab-home-layout { padding-top:24px; }
  .lab-home .lab-hero { grid-template-columns:1fr; grid-template-areas:'copy' 'art' 'demo'; row-gap:24px; }
  .lab-home .lab-hero-art { aspect-ratio:1.5; min-height:0; }
  .lab-home .lab-hero h1 { font-size:42px; }
  .lab-home .lab-hero-description { font-size:16px; }
  .home-preview { max-width:none; }
  .home-preview-controls a { margin-left:auto; }
  .home-ambient:before,.home-ambient:after { width:80vw; filter:blur(40px); }
  .home-petal:nth-child(n+6) { display:none; }
}
@media(prefers-reduced-motion:reduce) {
  .home-ambient,.home-scroll-progress { display:none; }
  .lab-home .lab-orbit,.home-preview-sentence strong.is-changing { animation:none; }
  .lab-home .lab-hero-art img,.lab-home .lab-hero-art:hover img { transform:none; transition:none; }
}