:root {
  color-scheme: light;
  --font-sans: Inter, ui-sans-serif, -apple-system, BlinkMacSystemFont, "Segoe UI", "PingFang SC", "Hiragino Sans GB", "Microsoft YaHei", sans-serif;
  --ink: #11131a;
  --ink-soft: #343844;
  --muted: #686e7c;
  --muted-light: #aeb4c2;
  --page: #f4f5f8;
  --page-deep: #ebeef5;
  --surface: rgba(255, 255, 255, 0.78);
  --surface-strong: rgba(255, 255, 255, 0.93);
  --border: rgba(29, 34, 48, 0.1);
  --border-strong: rgba(29, 34, 48, 0.18);
  --primary: #5267ee;
  --primary-strong: #4354d8;
  --primary-soft: rgba(82, 103, 238, 0.12);
  --violet: #7858e8;
  --blue: #3c79e6;
  --orange: #de793e;
  --green: #2e9870;
  --cyan: #258ca3;
  --electric: #d99420;
  --radius-sm: 0.75rem;
  --radius-md: 1rem;
  --radius-lg: 1.5rem;
  --radius-xl: 2rem;
  --radius-pill: 999rem;
  --shadow-sm: 0 0.5rem 1.5rem rgba(24, 29, 45, 0.07);
  --shadow-md: 0 1.25rem 3.75rem rgba(35, 42, 66, 0.1);
  --shadow-lg: 0 2rem 5rem rgba(38, 45, 72, 0.14);
  --content: 75rem;
  --cycle: 3s;
  --motion-state: paused;
  font-family: var(--font-sans);
  font-synthesis: none;
  text-rendering: optimizeLegibility;
}

* {
  box-sizing: border-box;
}

html {
  min-width: 20rem;
  scroll-behavior: smooth;
  scroll-padding-top: 8rem;
}

body {
  min-width: 20rem;
  min-height: 100vh;
  margin: 0;
  color: var(--ink);
  background:
    radial-gradient(circle at 8% 4%, #eee9ff 0, transparent 28%),
    radial-gradient(circle at 94% 18%, #e6f0ff 0, transparent 25%),
    linear-gradient(180deg, var(--page) 0%, #fff 48%, var(--page) 100%);
  font-size: 1rem;
  line-height: 1.7;
  -webkit-font-smoothing: antialiased;
}

button,
input,
select {
  font: inherit;
}

button,
a {
  -webkit-tap-highlight-color: transparent;
}

a {
  color: inherit;
  text-decoration: none;
}

img,
svg {
  display: block;
}

h1,
h2,
h3,
p,
ul,
dl,
dd {
  margin: 0;
}

ul {
  padding: 0;
  list-style: none;
}

:focus-visible {
  outline: 0.1875rem solid var(--primary);
  outline-offset: 0.2rem;
  box-shadow: 0 0 0 0.25rem var(--primary-soft);
}

.visually-hidden {
  position: absolute;
  width: 1px;
  height: 1px;
  padding: 0;
  margin: -1px;
  overflow: hidden;
  clip: rect(0 0 0 0);
  white-space: nowrap;
  border: 0;
}

.skip-link {
  position: fixed;
  top: 0.75rem;
  left: 0.75rem;
  z-index: 100;
  padding: 0.7rem 1.1rem;
  border-radius: var(--radius-pill);
  color: #fff;
  background: var(--ink);
  font-size: 0.875rem;
  font-weight: 700;
  transform: translateY(calc(-100% - 2rem));
  transition: transform 0.16s ease;
}

.skip-link:focus {
  transform: translateY(0);
}

.site-header {
  position: sticky;
  top: 0;
  z-index: 50;
  isolation: isolate;
  padding: 1rem 1.5rem 0;
}

.site-header::before {
  position: absolute;
  inset: 0 0 auto;
  z-index: -1;
  height: calc(100% + 1rem);
  content: "";
  pointer-events: none;
  background: linear-gradient(rgba(244, 245, 248, 0.9) 0%, rgba(244, 245, 248, 0.55) 58%, rgba(244, 245, 248, 0) 100%);
  backdrop-filter: blur(1.5rem) saturate(160%);
  -webkit-mask-image: linear-gradient(#000 55%, transparent 100%);
  mask-image: linear-gradient(#000 55%, transparent 100%);
}

.site-header__shell {
  display: flex;
  align-items: center;
  justify-content: space-between;
  width: 100%;
  max-width: 78rem;
  min-height: 4.25rem;
  margin: 0 auto;
  padding: 0.5rem 0.75rem 0.5rem 1.25rem;
  border: 1px solid rgba(255, 255, 255, 0.55);
  border-radius: var(--radius-pill);
  background: linear-gradient(180deg, rgba(255, 255, 255, 0.82), rgba(255, 255, 255, 0.62));
  backdrop-filter: blur(2.75rem) saturate(190%);
  box-shadow: 0 0.75rem 2rem rgba(24, 29, 45, 0.1), inset 0 1px rgba(255, 255, 255, 0.9);
}

.brand,
.footer-brand {
  display: inline-flex;
  align-items: center;
  gap: 0.75rem;
  font-weight: 760;
  letter-spacing: -0.03em;
  white-space: nowrap;
}

.brand {
  padding: 0.5rem;
  border-radius: var(--radius-pill);
}

.brand__mark {
  display: grid;
  place-items: center;
  flex: none;
  width: 2.5rem;
  height: 2.5rem;
  border-radius: var(--radius-md);
  color: #fff;
  background: linear-gradient(135deg, var(--primary), var(--violet));
  box-shadow: var(--shadow-sm);
  font-size: 0.8rem;
}

.brand__mark svg,
.brand__mark svg path,
.brand__mark svg circle {
  fill: none;
  stroke: currentColor;
  stroke-width: 1.7;
  stroke-linecap: round;
  stroke-linejoin: round;
}

.site-nav {
  display: flex;
  align-items: center;
  gap: 0.25rem;
}

.site-nav__link {
  padding: 0.75rem 1rem;
  border-radius: var(--radius-pill);
  color: var(--ink);
  font-size: 0.875rem;
  font-weight: 650;
  line-height: 1.3;
  white-space: nowrap;
  transition: color 0.16s ease, background-color 0.16s ease;
}

.site-nav__link:hover,
.site-nav__link.is-current {
  color: var(--primary-strong);
  background: var(--primary-soft);
}

.library-hero {
  position: relative;
  isolation: isolate;
  display: grid;
  grid-template-columns: minmax(0, 1fr) minmax(24rem, 0.85fr);
  align-items: center;
  gap: clamp(2rem, 6vw, 6rem);
  width: min(100%, 78rem);
  min-height: 42rem;
  margin: 0 auto;
  padding: 6.5rem 1.5rem 5rem;
  overflow: hidden;
}

.hero-orbit {
  position: absolute;
  z-index: -1;
  width: 24rem;
  height: 24rem;
  border-radius: 50%;
  filter: blur(2rem);
  opacity: 0.5;
  pointer-events: none;
}

.hero-orbit--left {
  top: 2rem;
  left: -15rem;
  background: radial-gradient(circle, rgba(120, 88, 232, 0.22), transparent 68%);
}

.hero-orbit--right {
  right: -8rem;
  bottom: -3rem;
  background: radial-gradient(circle, rgba(60, 121, 230, 0.22), transparent 68%);
}

.eyebrow,
.section-kicker {
  color: var(--primary-strong);
  font-size: 0.75rem;
  font-weight: 760;
  letter-spacing: 0.12em;
  line-height: 1.3;
  text-transform: uppercase;
}

.eyebrow {
  display: inline-flex;
  align-items: center;
  gap: 0.5rem;
  margin-bottom: 2rem;
  padding: 0.5rem 1rem;
  border: 1px solid var(--border);
  border-radius: var(--radius-pill);
  background: rgba(255, 255, 255, 0.72);
  box-shadow: var(--shadow-sm);
}

.eyebrow span {
  color: var(--green);
  font-size: 0.6rem;
  box-shadow: 0 0 0 0.25rem rgba(46, 152, 112, 0.12);
  border-radius: 50%;
}

.library-hero h1 {
  max-width: 44rem;
  font-size: clamp(3.4rem, 7.1vw, 6.8rem);
  font-weight: 780;
  letter-spacing: -0.065em;
  line-height: 0.96;
  text-wrap: balance;
}

.library-hero h1 span {
  color: transparent;
  background: linear-gradient(120deg, var(--primary) 8%, var(--violet) 62%, var(--blue));
  background-clip: text;
  -webkit-background-clip: text;
}

.library-hero__lede {
  max-width: 38rem;
  margin-top: 2rem;
  color: var(--muted);
  font-size: 1.125rem;
  line-height: 1.8;
}

.hero-stats {
  display: flex;
  flex-wrap: wrap;
  gap: 0.7rem;
  margin-top: 2rem;
}

.hero-stats span {
  padding: 0.55rem 0.8rem;
  border: 1px solid var(--border);
  border-radius: var(--radius-pill);
  color: var(--muted);
  background: rgba(255, 255, 255, 0.65);
  font-size: 0.75rem;
}

.hero-stats strong {
  color: var(--ink);
}

.hero-mechanism {
  position: relative;
  min-width: 0;
  padding: 1.2rem;
  border: 1px solid rgba(255, 255, 255, 0.72);
  border-radius: 2.25rem;
  background: linear-gradient(145deg, rgba(255, 255, 255, 0.92), rgba(235, 239, 255, 0.8));
  box-shadow: var(--shadow-lg), inset 0 1px #fff;
  transform: rotate(1.2deg);
}

.hero-mechanism::before {
  position: absolute;
  inset: 0.7rem;
  border: 1px solid rgba(82, 103, 238, 0.1);
  border-radius: 1.8rem;
  content: "";
  pointer-events: none;
}

.hero-mechanism__label {
  position: relative;
  z-index: 1;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 1rem;
  padding: 0.5rem 0.65rem 0;
  color: var(--muted);
}

.hero-mechanism__label span {
  font-size: 0.66rem;
  font-weight: 760;
  letter-spacing: 0.14em;
}

.hero-mechanism__label strong {
  color: var(--ink-soft);
  font-size: 0.8rem;
}

.hero-mechanism svg {
  position: relative;
  width: 100%;
  height: auto;
  overflow: visible;
}

.hero-grid {
  fill: none;
  stroke: rgba(82, 103, 238, 0.1);
  stroke-width: 1;
}

.hero-rail {
  fill: none;
  stroke: #394252;
  stroke-width: 12;
  stroke-linecap: round;
  opacity: 0.4;
}

.hero-crank,
.hero-rod,
.hero-slider {
  transform-box: view-box;
}

.hero-crank {
  transform-origin: 168px 236px;
  animation: hero-spin var(--cycle) linear infinite;
}

.hero-crank circle:nth-of-type(2) {
  fill: #6176ef;
  stroke: #3447bb;
  stroke-width: 5;
}

.hero-crank path {
  fill: none;
  stroke: #fff;
  stroke-width: 9;
  stroke-linecap: round;
}

.hero-crank circle:last-of-type {
  fill: #f4bb43;
  stroke: #8c6818;
  stroke-width: 4;
}

.hero-rod {
  transform-origin: 210px 206px;
  animation: hero-rock var(--cycle) ease-in-out infinite;
}

.hero-rod path {
  fill: none;
  stroke: #de793e;
  stroke-width: 18;
  stroke-linecap: round;
}

.hero-rod circle {
  fill: #fff;
  stroke: #8d4927;
  stroke-width: 4;
}

.hero-slider {
  animation: hero-slide var(--cycle) ease-in-out infinite;
}

.hero-slider rect {
  fill: #2e9870;
  stroke: #176a4b;
  stroke-width: 5;
}

.hero-slider path {
  stroke: rgba(255, 255, 255, 0.76);
  stroke-width: 4;
}

.hero-mechanism text {
  fill: var(--muted);
  font-family: var(--font-sans);
  font-size: 11px;
  font-weight: 760;
  letter-spacing: 0.08em;
}

.hero-mechanism__note {
  display: flex;
  align-items: center;
  gap: 0.55rem;
  padding: 0 0.7rem 0.55rem;
  color: var(--muted);
  font-size: 0.75rem;
}

.hero-mechanism__note span {
  width: 0.55rem;
  height: 0.55rem;
  border-radius: 50%;
  background: var(--green);
  box-shadow: 0 0 0 0.25rem rgba(46, 152, 112, 0.12);
}

@keyframes hero-spin {
  to { transform: rotate(360deg); }
}

@keyframes hero-rock {
  0%, 100% { transform: rotate(-8deg); }
  50% { transform: rotate(8deg); }
}

@keyframes hero-slide {
  0%, 100% { transform: translateX(-18px); }
  50% { transform: translateX(20px); }
}

.catalog-shell {
  width: min(100%, var(--content));
  margin: 0 auto;
  padding: 6rem 1.5rem 7rem;
}

.catalog-heading {
  display: grid;
  grid-template-columns: minmax(0, 1fr) minmax(18rem, 0.62fr);
  align-items: end;
  gap: 3rem;
  margin-bottom: 2rem;
}

.catalog-heading h2,
.library-note h2 {
  margin-top: 0.8rem;
  font-size: clamp(2.25rem, 5vw, 4rem);
  font-weight: 760;
  letter-spacing: -0.045em;
  line-height: 1.08;
  text-wrap: balance;
}

.catalog-heading > p {
  color: var(--muted);
  font-size: 1rem;
}

.search-panel {
  position: sticky;
  top: 6rem;
  z-index: 20;
  display: grid;
  grid-template-columns: minmax(18rem, 1fr) auto auto;
  align-items: center;
  gap: 0.75rem;
  padding: 0.75rem;
  border: 1px solid rgba(255, 255, 255, 0.65);
  border-radius: 1.4rem;
  background: rgba(255, 255, 255, 0.8);
  box-shadow: var(--shadow-md), inset 0 1px rgba(255, 255, 255, 0.95);
  backdrop-filter: blur(1.5rem) saturate(160%);
}

.search-box {
  position: relative;
  display: flex;
  align-items: center;
  gap: 0.65rem;
  min-width: 0;
  min-height: 3.35rem;
  padding: 0 0.85rem;
  border: 1px solid var(--border);
  border-radius: var(--radius-lg);
  color: var(--muted);
  background: #fff;
}

.search-box svg {
  flex: none;
  fill: none;
  stroke: currentColor;
  stroke-width: 1.8;
  stroke-linecap: round;
}

.search-box:focus-within {
  border-color: rgba(82, 103, 238, 0.55);
  box-shadow: 0 0 0 0.25rem var(--primary-soft);
}

.search-box input {
  width: 100%;
  min-width: 0;
  border: 0;
  outline: 0;
  color: var(--ink);
  background: transparent;
}

.search-box input::placeholder {
  color: #9197a5;
}

.search-box input::-webkit-search-cancel-button {
  display: none;
}

.clear-search {
  display: grid;
  place-items: center;
  flex: none;
  width: 2rem;
  height: 2rem;
  padding: 0;
  border: 0;
  border-radius: 50%;
  color: var(--muted);
  background: var(--page-deep);
  cursor: pointer;
  font-size: 1.2rem;
}

.clear-search[hidden] {
  display: none;
}

.domain-tabs {
  display: flex;
  gap: 0.25rem;
  padding: 0.25rem;
  border: 1px solid var(--border);
  border-radius: var(--radius-pill);
  background: var(--page-deep);
}

.domain-tab {
  min-height: 2.65rem;
  padding: 0.55rem 0.85rem;
  border: 0;
  border-radius: var(--radius-pill);
  color: var(--muted);
  background: transparent;
  cursor: pointer;
  font-size: 0.78rem;
  font-weight: 680;
  white-space: nowrap;
}

.domain-tab:hover,
.domain-tab.is-active {
  color: var(--ink);
  background: #fff;
  box-shadow: var(--shadow-sm);
}

.select-filters {
  display: flex;
  gap: 0.5rem;
}

.select-filters label {
  position: relative;
}

.select-filters label > span {
  position: absolute;
  width: 1px;
  height: 1px;
  overflow: hidden;
  clip: rect(0 0 0 0);
}

.select-filters select {
  min-height: 3.1rem;
  padding: 0 2.15rem 0 0.85rem;
  border: 1px solid var(--border);
  border-radius: var(--radius-md);
  color: var(--ink-soft);
  background: #fff;
  cursor: pointer;
  font-size: 0.78rem;
  font-weight: 650;
}

.result-bar {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 1rem;
  padding: 1.5rem 0 1.1rem;
  color: var(--muted);
  font-size: 0.8rem;
}

.result-bar strong {
  color: var(--ink);
}

.result-bar__tip {
  display: inline-flex;
  align-items: center;
  gap: 0.4rem;
}

.result-bar__tip span {
  color: var(--primary);
  font-size: 0.65rem;
}

.animation-grid {
  display: grid;
  grid-template-columns: repeat(3, minmax(0, 1fr));
  gap: 1.35rem;
}

.animation-card {
  --card-accent: var(--primary);
  --card-tint: #e9ecff;
  position: relative;
  min-width: 0;
  border: 1px solid var(--border);
  border-radius: var(--radius-xl);
  background: rgba(255, 255, 255, 0.93);
  box-shadow: var(--shadow-sm);
  overflow: hidden;
  transition: transform 0.28s cubic-bezier(0.2, 0.72, 0.2, 1), box-shadow 0.28s ease, border-color 0.28s ease;
}

.animation-card[data-domain="mechanical"] {
  --card-accent: var(--orange);
  --card-tint: #fff0e4;
}

.animation-card[data-domain="motion"] {
  --card-accent: var(--cyan);
  --card-tint: #e2f5f8;
}

.animation-card[data-domain="electrical"] {
  --card-accent: var(--electric);
  --card-tint: #fff5d9;
}

.animation-card:hover,
.animation-card:focus-within {
  transform: translateY(-0.35rem);
  border-color: var(--border-strong);
  box-shadow: var(--shadow-lg);
}

.animation-card__preview {
  position: relative;
  display: grid;
  place-items: center;
  min-height: 15rem;
  padding: 1rem;
  border-bottom: 1px solid var(--border);
  background:
    radial-gradient(circle at 80% 18%, rgba(255, 255, 255, 0.88), transparent 30%),
    linear-gradient(145deg, #fff, var(--card-tint));
  overflow: hidden;
}

.animation-card__preview::after,
.detail-stage::after {
  position: absolute;
  inset: auto 1rem 0.8rem auto;
  padding: 0.28rem 0.5rem;
  border: 1px solid rgba(255, 255, 255, 0.72);
  border-radius: var(--radius-pill);
  color: rgba(52, 56, 68, 0.65);
  background: rgba(255, 255, 255, 0.62);
  backdrop-filter: blur(0.8rem);
  content: "SCHEMATIC";
  font-size: 0.55rem;
  font-weight: 760;
  letter-spacing: 0.12em;
}

.animation-stage {
  position: relative;
  z-index: 1;
  width: 100%;
  height: 13rem;
  --motion-state: paused;
}

.animation-stage svg {
  width: 100%;
  height: 100%;
  overflow: visible;
}

.animation-card.is-playing .animation-stage,
.detail-stage.is-playing {
  --motion-state: running;
}

@media (hover: hover) and (prefers-reduced-motion: no-preference) {
  .animation-card:hover .animation-stage,
  .animation-card:focus-within .animation-stage {
    --motion-state: running;
  }
}

.preview-status {
  position: absolute;
  top: 0.9rem;
  left: 0.9rem;
  z-index: 3;
  display: inline-flex;
  align-items: center;
  gap: 0.4rem;
  padding: 0.35rem 0.55rem;
  border: 1px solid rgba(255, 255, 255, 0.76);
  border-radius: var(--radius-pill);
  color: var(--ink-soft);
  background: rgba(255, 255, 255, 0.74);
  backdrop-filter: blur(0.8rem);
  font-size: 0.65rem;
  font-weight: 680;
}

.preview-status::before {
  width: 0.45rem;
  height: 0.45rem;
  border-radius: 50%;
  background: var(--card-accent);
  box-shadow: 0 0 0 0.2rem color-mix(in srgb, var(--card-accent) 15%, transparent);
  content: "";
}

.animation-card__body {
  padding: 1.35rem;
}

.animation-card__meta {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 0.75rem;
  color: var(--card-accent);
  font-size: 0.68rem;
  font-weight: 760;
  letter-spacing: 0.08em;
}

.difficulty-badge {
  padding: 0.28rem 0.52rem;
  border: 1px solid var(--border);
  border-radius: var(--radius-pill);
  color: var(--muted);
  background: var(--page);
  letter-spacing: 0;
}

.animation-card h3 {
  margin-top: 0.65rem;
  font-size: 1.45rem;
  font-weight: 740;
  letter-spacing: -0.035em;
  line-height: 1.18;
}

.animation-card__summary {
  min-height: 4.7rem;
  margin-top: 0.55rem;
  color: var(--muted);
  font-size: 0.86rem;
  line-height: 1.72;
}

.card-tags,
.detail-tags {
  display: flex;
  flex-wrap: wrap;
  gap: 0.42rem;
}

.card-tags {
  margin-top: 0.9rem;
}

.card-tags span,
.detail-tags span {
  padding: 0.35rem 0.56rem;
  border: 1px solid var(--border);
  border-radius: var(--radius-pill);
  color: var(--muted);
  background: var(--page);
  font-size: 0.67rem;
  line-height: 1.2;
}

.animation-card__actions {
  display: grid;
  grid-template-columns: auto 1fr;
  gap: 0.55rem;
  margin-top: 1.15rem;
}

.button,
.card-action,
.dialog-close {
  border: 0;
  cursor: pointer;
}

.button,
.card-action {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 0.45rem;
  min-height: 2.85rem;
  padding: 0.65rem 1rem;
  border-radius: var(--radius-pill);
  font-size: 0.78rem;
  font-weight: 680;
  transition: transform 0.16s ease, box-shadow 0.16s ease, background-color 0.16s ease;
}

.button:hover,
.card-action:hover {
  transform: translateY(-0.12rem);
}

.card-action--play {
  min-width: 5.4rem;
  color: var(--card-accent);
  background: var(--card-tint);
}

.card-action--detail {
  color: #fff;
  background: var(--ink);
  box-shadow: var(--shadow-sm);
}

.card-action--detail:hover {
  background: var(--primary-strong);
  box-shadow: var(--shadow-md);
}

.button--primary {
  color: #fff;
  background: var(--ink);
}

.button--dark {
  color: #fff;
  background: var(--ink);
}

.empty-state,
.noscript-note {
  padding: 4rem 1.5rem;
  border: 1px dashed var(--border-strong);
  border-radius: var(--radius-xl);
  text-align: center;
  color: var(--muted);
  background: rgba(255, 255, 255, 0.62);
}

.empty-state__icon {
  display: grid;
  place-items: center;
  width: 4rem;
  height: 4rem;
  margin: 0 auto 1rem;
  border-radius: 1.25rem;
  color: var(--primary);
  background: var(--primary-soft);
  font-size: 2rem;
}

.empty-state h3 {
  color: var(--ink);
  font-size: 1.4rem;
}

.empty-state p,
.noscript-note p {
  margin: 0.4rem auto 1.2rem;
  max-width: 36rem;
}

.library-note {
  display: grid;
  grid-template-columns: minmax(20rem, 0.85fr) minmax(0, 1.15fr);
  gap: clamp(2rem, 6vw, 5rem);
  width: min(calc(100% - 3rem), var(--content));
  margin: 0 auto 7rem;
  padding: clamp(2rem, 5vw, 4rem);
  border: 1px solid rgba(255, 255, 255, 0.1);
  border-radius: 2.5rem;
  color: #f8f9fc;
  background: linear-gradient(145deg, #222633, #11131a);
  box-shadow: 0 2rem 4rem rgba(9, 11, 17, 0.2);
}

.section-kicker--light {
  color: #aeb4c2;
}

.library-note h2 {
  font-size: clamp(2rem, 4.5vw, 3.7rem);
}

.library-note ul {
  display: grid;
  gap: 0.85rem;
}

.library-note li {
  display: grid;
  grid-template-columns: auto minmax(0, 1fr);
  gap: 1rem;
  padding: 1.2rem;
  border: 1px solid rgba(255, 255, 255, 0.1);
  border-radius: var(--radius-lg);
  background: rgba(255, 255, 255, 0.05);
}

.library-note li > span {
  color: #8fa0ff;
  font-size: 0.7rem;
  font-weight: 760;
  letter-spacing: 0.08em;
}

.library-note li strong {
  font-size: 0.92rem;
}

.library-note li p {
  margin-top: 0.25rem;
  color: #b8becb;
  font-size: 0.78rem;
}

.site-footer {
  display: flex;
  align-items: flex-end;
  justify-content: space-between;
  gap: 2rem;
  padding: 4rem max(1.5rem, calc((100vw - var(--content)) / 2 + 1.5rem)) 2rem;
  color: #f8f9fc;
  background: var(--ink);
}

.site-footer > div > p {
  margin-top: 0.8rem;
  color: #b8becb;
  font-size: 0.82rem;
}

.footer-links {
  display: flex;
  flex-wrap: wrap;
  gap: 1.2rem;
  color: #b8becb;
  font-size: 0.78rem;
}

.footer-links a:hover {
  color: #fff;
}

.detail-dialog {
  width: min(calc(100% - 2rem), 66rem);
  max-height: min(92vh, 56rem);
  padding: 0;
  border: 0;
  border-radius: 2rem;
  color: var(--ink);
  background: transparent;
  box-shadow: 0 3rem 8rem rgba(8, 10, 18, 0.38);
  overflow: hidden;
}

.detail-dialog::backdrop {
  background: rgba(15, 17, 25, 0.58);
  backdrop-filter: blur(0.7rem);
}

.dialog-shell {
  max-height: min(92vh, 56rem);
  background: #f7f8fb;
  overflow: auto;
}

.dialog-header {
  position: sticky;
  top: 0;
  z-index: 5;
  display: flex;
  align-items: flex-start;
  justify-content: space-between;
  gap: 1.5rem;
  padding: 1.5rem 1.5rem 1.15rem;
  border-bottom: 1px solid var(--border);
  background: rgba(247, 248, 251, 0.86);
  backdrop-filter: blur(1.2rem) saturate(160%);
}

.dialog-domain {
  color: var(--primary-strong);
  font-size: 0.68rem;
  font-weight: 760;
  letter-spacing: 0.1em;
}

.dialog-header h2 {
  margin-top: 0.28rem;
  font-size: clamp(1.8rem, 4vw, 2.7rem);
  font-weight: 760;
  letter-spacing: -0.04em;
  line-height: 1.1;
}

.dialog-header > div > p:last-child {
  margin-top: 0.35rem;
  color: var(--muted);
  font-size: 0.85rem;
}

.dialog-close {
  display: grid;
  place-items: center;
  flex: none;
  width: 2.6rem;
  height: 2.6rem;
  padding: 0;
  border-radius: 50%;
  color: var(--ink-soft);
  background: #fff;
  box-shadow: var(--shadow-sm);
  font-size: 1.45rem;
}

.dialog-body {
  padding: 1.5rem;
}

.detail-stage {
  position: relative;
  display: grid;
  place-items: center;
  min-height: 27rem;
  padding: 2rem;
  border: 1px solid var(--border);
  border-radius: var(--radius-xl);
  background:
    radial-gradient(circle at 78% 16%, rgba(255, 255, 255, 0.95), transparent 28%),
    linear-gradient(145deg, #fff, #e9ecff);
  overflow: hidden;
  --motion-state: running;
}

.detail-stage svg {
  width: min(100%, 44rem);
  max-height: 25rem;
}

.detail-stage[data-speed="0.5"] { --cycle: 6s; }
.detail-stage[data-speed="1"] { --cycle: 3s; }
.detail-stage[data-speed="2"] { --cycle: 1.5s; }

.detail-controls {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 1rem;
  padding: 0.9rem 0.2rem;
}

.speed-control {
  display: flex;
  align-items: center;
  gap: 0.25rem;
  padding: 0.25rem;
  border: 1px solid var(--border);
  border-radius: var(--radius-pill);
  background: var(--page-deep);
}

.speed-control > span {
  padding: 0 0.55rem;
  color: var(--muted);
  font-size: 0.7rem;
}

.speed-control button {
  min-width: 2.7rem;
  padding: 0.42rem 0.6rem;
  border: 0;
  border-radius: var(--radius-pill);
  color: var(--muted);
  background: transparent;
  cursor: pointer;
  font-size: 0.7rem;
  font-weight: 680;
}

.speed-control button:hover,
.speed-control button.is-active {
  color: var(--ink);
  background: #fff;
  box-shadow: var(--shadow-sm);
}

.detail-copy {
  display: grid;
  grid-template-columns: minmax(0, 1.05fr) minmax(0, 0.95fr);
  gap: 1.2rem;
  margin-top: 0.5rem;
}

.detail-copy > section,
.detail-facts {
  padding: 1.5rem;
  border: 1px solid var(--border);
  border-radius: var(--radius-lg);
  background: #fff;
}

.detail-copy h3 {
  margin-top: 0.5rem;
  font-size: 1.35rem;
}

.detail-copy section > p:last-child {
  margin-top: 0.7rem;
  color: var(--muted);
  font-size: 0.9rem;
}

.detail-facts {
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: 1rem;
}

.detail-facts div {
  min-width: 0;
}

.detail-facts dt {
  color: var(--muted);
  font-size: 0.68rem;
  font-weight: 720;
  letter-spacing: 0.06em;
}

.detail-facts dd {
  margin-top: 0.25rem;
  color: var(--ink-soft);
  font-size: 0.82rem;
  line-height: 1.55;
}

.detail-tags {
  grid-column: 1 / -1;
  padding: 0.2rem;
}

/* Shared schematic language for every original SVG in the catalog. */
.mechanism-svg {
  --line: #435063;
  --line-soft: #7b8798;
  --part-a: #5267ee;
  --part-a-dark: #3447bb;
  --part-b: #de793e;
  --part-b-dark: #914c27;
  --part-c: #2e9870;
  --part-c-dark: #176a4b;
  --signal: #e2a829;
  font-family: var(--font-sans);
  shape-rendering: geometricPrecision;
}

.mechanism-svg *,
.mechanism-svg *::before,
.mechanism-svg *::after {
  vector-effect: non-scaling-stroke;
}

.mechanism-svg .ground-line,
.mechanism-svg .ground-link,
.mechanism-svg .guide-rail,
.mechanism-svg .center-line,
.mechanism-svg .bearing-base,
.mechanism-svg .guide-slot,
.mechanism-svg .motion-guide,
.mechanism-svg .motion-arrow,
.mechanism-svg .flow-line,
.mechanism-svg .timeline-line,
.mechanism-svg .transition-arrow,
.mechanism-svg .trace-path {
  fill: none;
  stroke: var(--line-soft);
  stroke-width: 3;
  stroke-linecap: round;
  stroke-linejoin: round;
}

.mechanism-svg .ground-line,
.mechanism-svg .ground-link {
  stroke: var(--line);
  stroke-width: 4;
}

.mechanism-svg .guide-rail,
.mechanism-svg .guide-slot,
.mechanism-svg .center-line,
.mechanism-svg .trace-path {
  stroke-dasharray: 7 7;
  opacity: 0.58;
}

.mechanism-svg .motion-guide,
.mechanism-svg .motion-arrow,
.mechanism-svg .transition-arrow {
  stroke: var(--part-a);
  stroke-width: 3;
}

.mechanism-svg .arrow-head {
  fill: var(--part-a);
  stroke: none;
}

.mechanism-svg .mechanism-link,
.mechanism-svg .rocker-arm,
.mechanism-svg .rocker-link,
.mechanism-svg .drive-arm,
.mechanism-svg .piston-rod,
.mechanism-svg .follower-stem,
.mechanism-svg .spring,
.mechanism-svg .pulley-spokes,
.mechanism-svg .gear-spokes,
.mechanism-svg .cam-index,
.mechanism-svg .drive-arm {
  fill: none;
  stroke: var(--line);
  stroke-width: 8;
  stroke-linecap: round;
  stroke-linejoin: round;
}

.mechanism-svg .crank-link,
.mechanism-svg .input-crank .mechanism-link,
.mechanism-svg .drive-arm {
  stroke: var(--part-b);
}

.mechanism-svg .rocker-link,
.mechanism-svg .piston-rod,
.mechanism-svg .follower-stem {
  stroke: var(--part-a);
}

.mechanism-svg .spring {
  stroke-width: 3;
}

.mechanism-svg .joint,
.mechanism-svg .fixed-pivot,
.mechanism-svg .hub,
.mechanism-svg .bearing,
.mechanism-svg .mesh-point,
.mechanism-svg .drive-pin,
.mechanism-svg .roller,
.mechanism-svg .terminal,
.mechanism-svg .trace-point {
  fill: #fff;
  stroke: var(--line);
  stroke-width: 3;
}

.mechanism-svg .hub,
.mechanism-svg .fixed-pivot {
  fill: var(--line);
  stroke: #fff;
  stroke-width: 2;
}

.mechanism-svg .slider-body,
.mechanism-svg .guide-block,
.mechanism-svg .cylinder-barrel,
.mechanism-svg .piston,
.mechanism-svg .rod-end,
.mechanism-svg .device-box,
.mechanism-svg .contactor-box,
.mechanism-svg .breaker .device-box {
  fill: rgba(255, 255, 255, 0.92);
  stroke: var(--line);
  stroke-width: 3;
}

.mechanism-svg .slider-body,
.mechanism-svg .piston,
.mechanism-svg .rod-end {
  fill: var(--part-c);
  stroke: var(--part-c-dark);
}

.mechanism-svg .cam-body,
.mechanism-svg .drive-wheel,
.mechanism-svg .geneva-body,
.mechanism-svg .ratchet-teeth,
.mechanism-svg .rack-body {
  fill: var(--part-b);
  stroke: var(--part-b-dark);
  stroke-width: 3;
  stroke-linejoin: round;
}

.mechanism-svg .ratchet-rim,
.mechanism-svg .gear-rim,
.mechanism-svg .pulley-rim,
.mechanism-svg .pulley-groove {
  fill: rgba(255, 255, 255, 0.85);
  stroke: var(--line);
  stroke-width: 3;
}

.mechanism-svg .gear-teeth {
  fill: var(--part-a);
  stroke: var(--part-a-dark);
  stroke-width: 10;
  stroke-dasharray: 1.25 1.25;
}

.mechanism-svg .gear-rim {
  fill: rgba(255, 255, 255, 0.75);
  stroke: var(--part-a-dark);
}

.mechanism-svg .gear-b .gear-teeth {
  fill: var(--part-b);
  stroke: var(--part-b-dark);
}

.mechanism-svg .gear-b .gear-rim {
  stroke: var(--part-b-dark);
}

.mechanism-svg .pulley-rim {
  fill: var(--part-a);
  stroke: var(--part-a-dark);
  stroke-width: 5;
}

.mechanism-svg .pulley-groove {
  fill: none;
  stroke: rgba(255, 255, 255, 0.76);
  stroke-width: 3;
}

.mechanism-svg .pulley-spokes,
.mechanism-svg .gear-spokes {
  stroke: rgba(255, 255, 255, 0.76);
  stroke-width: 3;
}

.mechanism-svg .belt {
  fill: none;
  stroke: var(--line);
  stroke-width: 8;
  stroke-linecap: round;
  stroke-dasharray: 14 7;
}

.mechanism-svg .belt-motion {
  fill: none;
  stroke: var(--part-b);
  stroke-width: 3;
  stroke-linecap: round;
  stroke-linejoin: round;
}

.mechanism-svg .locking-cutout,
.mechanism-svg .geneva-slots,
.mechanism-svg .rack-teeth,
.mechanism-svg .end-cap,
.mechanism-svg .port {
  fill: none;
  stroke: var(--line);
  stroke-width: 4;
  stroke-linecap: round;
  stroke-linejoin: round;
}

.mechanism-svg .geneva-slots {
  stroke: #fff;
  stroke-width: 9;
}

.mechanism-svg .drive-pin {
  fill: var(--signal);
  stroke: #8c6818;
}

.mechanism-svg .pawl {
  fill: var(--signal);
  stroke: #8c6818;
  stroke-width: 3;
  stroke-linejoin: round;
}

.mechanism-svg .cylinder-barrel {
  fill: rgba(255, 255, 255, 0.72);
  stroke: var(--line);
}

.mechanism-svg .air-particle {
  fill: var(--cyan);
  opacity: 0;
}

.mechanism-svg .flow-line {
  stroke: var(--cyan);
  stroke-width: 4;
  stroke-dasharray: 7 6;
}

.mechanism-svg .svg-label,
.mechanism-svg .svg-note {
  fill: var(--muted);
  font-size: 10px;
  font-weight: 680;
}

.mechanism-svg .svg-note {
  font-size: 8px;
}

.electrical-svg {
  --wire: #4c5869;
  --live: #e2a829;
  --live-dark: #906b10;
}

.electrical-svg .circuit-rail,
.electrical-svg .circuit-wire,
.electrical-svg .switch-blade,
.electrical-svg .contact-blade,
.electrical-svg .button-stem,
.electrical-svg .coil,
.electrical-svg .magnetic-field,
.electrical-svg .interlock,
.electrical-svg .interlock-mark,
.electrical-svg .motor-arrow,
.electrical-svg .winding,
.electrical-svg .star-symbol,
.electrical-svg .delta-symbol,
.electrical-svg .timer-hand {
  fill: none;
  stroke: var(--wire);
  stroke-width: 3;
  stroke-linecap: round;
  stroke-linejoin: round;
}

.electrical-svg .circuit-rail {
  stroke-width: 5;
}

.electrical-svg .current-path,
.electrical-svg .is-energized.circuit-wire,
.electrical-svg .is-energized .circuit-wire,
.electrical-svg .star-path.is-energized {
  stroke: var(--live);
  stroke-dasharray: 8 5;
}

.electrical-svg .terminal {
  fill: #fff;
  stroke: var(--wire);
}

.electrical-svg .coil,
.electrical-svg .device-box,
.electrical-svg .contactor-box {
  fill: rgba(255, 255, 255, 0.85);
  stroke: var(--wire);
}

.electrical-svg .is-energized .coil,
.electrical-svg .device-box.is-energized,
.electrical-svg .is-energized.device-box {
  fill: #fff3ca;
  stroke: var(--live-dark);
}

.electrical-svg .current-dot {
  fill: var(--live);
  filter: drop-shadow(0 0 4px rgba(226, 168, 41, 0.85));
}

.electrical-svg .motor-body,
.electrical-svg .timer-body {
  fill: rgba(255, 255, 255, 0.9);
  stroke: var(--part-a);
  stroke-width: 4;
}

.electrical-svg .stage-dot {
  fill: #fff;
  stroke: var(--line-soft);
  stroke-width: 3;
}

.electrical-svg .stage-dot.is-active {
  fill: var(--live);
  stroke: var(--live-dark);
}

.electrical-svg .winding-u { stroke: var(--part-b); }
.electrical-svg .winding-v { stroke: var(--part-a); }
.electrical-svg .winding-w { stroke: var(--part-c); }
.electrical-svg .star-symbol { stroke: var(--part-a); }
.electrical-svg .delta-symbol { stroke: var(--part-b); }

.mechanism-svg .is-rotating,
.mechanism-svg .is-rotating-cw,
.mechanism-svg .is-rotating-ccw,
.mechanism-svg .is-sliding-x,
.mechanism-svg .is-sliding-y,
.mechanism-svg .is-rocking,
.mechanism-svg .is-stepping,
.mechanism-svg .is-tapping,
.mechanism-svg .is-tracing,
.mechanism-svg .is-travelling,
.mechanism-svg .is-flowing,
.mechanism-svg .is-flowing-reverse,
.mechanism-svg .is-closing,
.mechanism-svg .is-latched,
.mechanism-svg .is-energized,
.mechanism-svg .is-selected,
.mechanism-svg .is-interlocked,
.mechanism-svg .is-timing,
.mechanism-svg .is-waiting {
  animation-play-state: var(--motion-state, paused) !important;
}

.mechanism-svg .is-rotating,
.mechanism-svg .is-rotating-cw {
  transform-box: view-box;
  animation: mechanism-spin-cw var(--cycle) linear infinite;
}

.mechanism-svg .is-rotating-ccw {
  transform-box: view-box;
  animation: mechanism-spin-ccw var(--cycle) linear infinite;
}

.mechanism-svg .is-sliding-x {
  transform-box: view-box;
  animation: mechanism-slide-x var(--cycle) ease-in-out infinite;
}

.mech-pneumatic-cylinder .is-sliding-x {
  animation-name: cylinder-slide-x;
}

.mechanism-svg .is-sliding-y {
  transform-box: view-box;
  animation: mechanism-slide-y var(--cycle) ease-in-out infinite;
}

.mechanism-svg .is-rocking {
  transform-box: view-box;
  animation: mechanism-rock var(--cycle) ease-in-out infinite;
}

.mechanism-svg .is-stepping {
  transform-box: view-box;
  animation: mechanism-step var(--cycle) steps(4, end) infinite;
}

.mech-ratchet-pawl .is-stepping {
  animation-timing-function: steps(12, end);
}

.mechanism-svg .is-tapping {
  transform-box: view-box;
  animation: mechanism-tap var(--cycle) ease-in-out infinite;
}

.mechanism-svg .is-tracing {
  transform-box: fill-box;
  transform-origin: center;
  animation: mechanism-pulse var(--cycle) ease-in-out infinite;
}

.mechanism-svg .is-travelling .belt {
  animation: belt-travel var(--cycle) linear infinite;
  animation-play-state: var(--motion-state, paused);
}

.mechanism-svg .particle-a,
.mechanism-svg .particle-b {
  animation: air-particle var(--cycle) linear infinite;
  animation-play-state: var(--motion-state, paused);
}

.mechanism-svg .particle-b {
  animation-delay: calc(var(--cycle) * -0.42);
}

.mechanism-svg .is-flowing .flow-line,
.mechanism-svg .is-flowing-reverse .flow-line,
.electrical-svg .is-energized.current-path,
.electrical-svg .is-energized .current-path,
.electrical-svg .is-selected .current-path,
.electrical-svg .star-path.is-energized {
  animation: line-flow var(--cycle) linear infinite;
  animation-play-state: var(--motion-state, paused);
}

.electrical-svg .is-closing .contact-blade,
.electrical-svg .is-latched .contact-blade {
  transform-box: fill-box;
  transform-origin: left center;
  animation: contact-close var(--cycle) ease-in-out infinite;
  animation-play-state: var(--motion-state, paused);
}

.electrical-svg .is-energized .coil,
.electrical-svg .is-energized.coil-ka,
.electrical-svg .stage-dot.is-active,
.electrical-svg .is-selected .contactor-box,
.electrical-svg .is-energized.device-box,
.electrical-svg .is-energized .device-box {
  animation: electrical-glow var(--cycle) ease-in-out infinite;
  animation-play-state: var(--motion-state, paused);
}

.electrical-svg .magnetic-field,
.electrical-svg .is-interlocked .interlock-mark {
  animation: electrical-pulse var(--cycle) ease-in-out infinite;
  animation-play-state: var(--motion-state, paused);
}

.electrical-svg .current-dot {
  animation: current-dot var(--cycle) linear infinite;
  animation-play-state: var(--motion-state, paused);
}

.electrical-svg .dot-b {
  animation-delay: calc(var(--cycle) * -0.5);
}

.electrical-svg .motor.is-rotating-cw {
  animation: none;
}

.electrical-svg .motor.is-rotating-cw .motor-arrow,
.electrical-svg .motor.is-rotating-cw .arrow-head {
  animation: electrical-pulse var(--cycle) ease-in-out infinite;
  animation-play-state: var(--motion-state, paused);
}

.electrical-svg .is-timing .timer-hand {
  transform-box: view-box;
  transform-origin: 69px 137px;
  animation: mechanism-spin-cw var(--cycle) linear infinite;
  animation-play-state: var(--motion-state, paused);
}

.electrical-svg .is-waiting {
  animation: waiting-switch var(--cycle) ease-in-out infinite;
}

.electrical-svg .delta-path {
  animation: waiting-switch var(--cycle) ease-in-out infinite reverse;
  animation-play-state: var(--motion-state, paused);
}

@keyframes mechanism-spin-cw {
  to { transform: rotate(360deg); }
}

@keyframes mechanism-spin-ccw {
  to { transform: rotate(-360deg); }
}

@keyframes mechanism-slide-x {
  0%, 100% { transform: translateX(-17px); }
  50% { transform: translateX(17px); }
}

@keyframes cylinder-slide-x {
  0%, 100% { transform: translateX(-48px); }
  50% { transform: translateX(48px); }
}

@keyframes mechanism-slide-y {
  0%, 100% { transform: translateY(-14px); }
  50% { transform: translateY(14px); }
}

@keyframes mechanism-rock {
  0%, 100% { transform: rotate(-12deg); }
  50% { transform: rotate(12deg); }
}

@keyframes mechanism-step {
  to { transform: rotate(360deg); }
}

@keyframes mechanism-tap {
  0%, 100% { transform: rotate(-8deg); }
  50% { transform: rotate(7deg); }
}

@keyframes mechanism-pulse {
  0%, 100% { transform: scale(0.8); opacity: 0.45; }
  50% { transform: scale(1.45); opacity: 1; }
}

@keyframes belt-travel {
  to { stroke-dashoffset: -42; }
}

@keyframes line-flow {
  to { stroke-dashoffset: -52; }
}

@keyframes air-particle {
  0% { transform: translateX(-8px); opacity: 0; }
  18%, 70% { opacity: 1; }
  100% { transform: translateX(38px); opacity: 0; }
}

@keyframes contact-close {
  0%, 22% { transform: rotate(0deg); }
  38%, 82% { transform: rotate(19deg); }
  100% { transform: rotate(0deg); }
}

@keyframes electrical-glow {
  0%, 22%, 100% { opacity: 0.62; filter: drop-shadow(0 0 0 transparent); }
  38%, 82% { opacity: 1; filter: drop-shadow(0 0 5px rgba(226, 168, 41, 0.75)); }
}

@keyframes electrical-pulse {
  0%, 100% { opacity: 0.35; }
  50% { opacity: 1; }
}

@keyframes current-dot {
  0% { transform: translateX(-9px); opacity: 0; }
  18%, 78% { opacity: 1; }
  100% { transform: translateX(34px); opacity: 0; }
}

@keyframes waiting-switch {
  0%, 45% { opacity: 0.28; }
  58%, 100% { opacity: 1; }
}

@media (max-width: 68rem) {
  .search-panel {
    grid-template-columns: minmax(16rem, 1fr) auto;
  }

  .select-filters {
    grid-column: 1 / -1;
    justify-content: flex-end;
  }

  .animation-grid {
    grid-template-columns: repeat(2, minmax(0, 1fr));
  }
}

@media (max-width: 56.25rem) {
  .site-header {
    padding-inline: 1rem;
  }

  .site-header__shell {
    padding-left: 1rem;
  }

  .site-nav__link {
    padding-inline: 0.75rem;
  }

  .library-hero {
    grid-template-columns: 1fr;
    min-height: 0;
    padding-top: 5rem;
  }

  .library-hero__copy {
    text-align: center;
  }

  .library-hero__lede,
  .library-hero h1 {
    margin-inline: auto;
  }

  .hero-stats {
    justify-content: center;
  }

  .hero-mechanism {
    width: min(100%, 35rem);
    margin-inline: auto;
  }

  .catalog-heading,
  .library-note {
    grid-template-columns: 1fr;
  }

  .catalog-heading {
    gap: 1rem;
  }

  .search-panel {
    position: relative;
    top: auto;
    grid-template-columns: 1fr;
  }

  .domain-tabs {
    overflow-x: auto;
  }

  .domain-tab {
    flex: 1 0 auto;
  }

  .select-filters {
    grid-column: auto;
    justify-content: stretch;
  }

  .select-filters label,
  .select-filters select {
    width: 100%;
  }

  .detail-stage {
    min-height: 22rem;
  }

  .detail-copy {
    grid-template-columns: 1fr;
  }
}

@media (max-width: 40rem) {
  .site-header {
    padding: 0;
  }

  .site-header::before {
    height: 100%;
    background: linear-gradient(rgba(255,255,255,.9), rgba(244,245,248,.72));
    -webkit-mask-image: none;
    mask-image: none;
  }

  .site-header__shell {
    max-width: none;
    min-height: 3.5rem;
    padding: max(0.5rem, env(safe-area-inset-top, 0px)) 0.75rem 0.5rem;
    border: 0;
    border-bottom: 1px solid rgba(255, 255, 255, 0.65);
    border-radius: 0;
    flex-wrap: wrap;
    gap: 0.5rem;
  }

  .brand {
    font-size: 0.875rem;
  }

  .brand__mark {
    width: 2.15rem;
    height: 2.15rem;
  }

  .site-nav {
    width: 100%;
    padding-bottom: 0.2rem;
    overflow-x: auto;
    scrollbar-width: none;
  }

  .site-nav::-webkit-scrollbar {
    display: none;
  }

  .site-nav__link {
    flex: none;
    padding: 0.5rem 0.75rem;
    font-size: 0.75rem;
  }

  .library-hero {
    padding: 4rem 1rem 3rem;
  }

  .eyebrow {
    margin-bottom: 1.4rem;
    font-size: 0.65rem;
  }

  .library-hero h1 {
    font-size: clamp(3rem, 15vw, 4.4rem);
  }

  .library-hero__lede {
    font-size: 1rem;
  }

  .hero-stats span {
    flex: 1 1 auto;
  }

  .hero-mechanism {
    padding: 0.7rem;
    border-radius: 1.5rem;
  }

  .catalog-shell {
    padding: 4rem 1rem 5rem;
  }

  .catalog-heading h2,
  .library-note h2 {
    font-size: 2.25rem;
  }

  .domain-tabs {
    width: 100%;
  }

  .select-filters {
    flex-direction: column;
  }

  .result-bar {
    align-items: flex-start;
    flex-direction: column;
  }

  .animation-grid {
    grid-template-columns: 1fr;
  }

  .animation-card__summary {
    min-height: 0;
  }

  .library-note {
    width: calc(100% - 2rem);
    margin-bottom: 5rem;
    padding: 2rem 1.25rem;
    border-radius: 1.5rem;
  }

  .site-footer {
    align-items: flex-start;
    flex-direction: column;
    padding: 3rem 1.25rem 1.5rem;
  }

  .detail-dialog {
    width: 100%;
    max-width: none;
    max-height: 96vh;
    margin: auto 0 0;
    border-radius: 1.5rem 1.5rem 0 0;
  }

  .dialog-shell {
    max-height: 96vh;
  }

  .dialog-header,
  .dialog-body {
    padding: 1rem;
  }

  .detail-stage {
    min-height: 17rem;
    padding: 1rem;
    border-radius: 1.25rem;
  }

  .detail-controls {
    align-items: stretch;
    flex-direction: column;
  }

  .speed-control {
    justify-content: center;
  }

  .detail-facts {
    grid-template-columns: 1fr;
  }
}

@media (prefers-reduced-motion: reduce) {
  html {
    scroll-behavior: auto;
  }

  *,
  *::before,
  *::after {
    scroll-behavior: auto !important;
    transition-duration: 0.01ms !important;
  }

  .hero-crank,
  .hero-rod,
  .hero-slider {
    animation-play-state: paused !important;
  }

  .animation-card:hover,
  .animation-card:focus-within {
    transform: none;
  }
}