:root {
  --bg-deep: #050c16;
  --bg-mid: #0b1a2d;
  --bg-soft: #13243a;
  --surface: #102238;
  --surface-soft: #162f49;
  --line: #24425f;
  --text: #e5edf7;
  --text-muted: #9fb5cd;
  --accent: #0ea5e9;
  --accent-2: #2563eb;
  --accent-3: #f59e0b;
  --ok: #22c55e;
  --danger: #ef4444;
  --radius: 16px;
  --radius-sm: 10px;
  --shadow: 0 20px 50px rgba(3, 11, 22, 0.35);
  --shell: min(1120px, 92vw);
}

* {
  box-sizing: border-box;
}

html,
body {
  margin: 0;
  padding: 0;
}

body {
  font-family: "Manrope", "Avenir Next", "Segoe UI", sans-serif;
  background:
    radial-gradient(circle at 10% -10%, rgba(14, 165, 233, 0.2), transparent 38%),
    radial-gradient(circle at 90% 0%, rgba(37, 99, 235, 0.22), transparent 32%),
    linear-gradient(180deg, var(--bg-mid) 0%, var(--bg-deep) 70%);
  color: var(--text);
  line-height: 1.6;
}

a {
  color: var(--accent);
  text-decoration: none;
}

a:hover {
  color: #67d5ff;
}

h1,
h2,
h3,
h4 {
  font-family: "IBM Plex Serif", "Georgia", serif;
  line-height: 1.2;
  letter-spacing: -0.01em;
  margin: 0 0 0.5rem;
}

p {
  margin: 0 0 1rem;
}

ul,
ol {
  margin: 0 0 1rem;
  padding-left: 1.2rem;
}

.skip-link {
  position: absolute;
  left: -1000px;
  top: 0;
  background: #fff;
  color: #111;
  padding: 0.6rem 0.9rem;
  z-index: 999;
}

.skip-link:focus {
  left: 0.8rem;
  top: 0.8rem;
}

.shell {
  width: var(--shell);
  margin-inline: auto;
}

.site-header {
  position: sticky;
  top: 0;
  z-index: 40;
  backdrop-filter: blur(12px);
  border-bottom: 1px solid rgba(159, 181, 205, 0.15);
  background: rgba(7, 17, 30, 0.84);
}

.site-header__inner {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 1rem;
  min-height: 4.3rem;
}

.brand {
  display: flex;
  align-items: center;
  gap: 0.7rem;
  color: var(--text);
}

.brand strong {
  display: block;
  font-size: 1.04rem;
}

.brand span {
  display: block;
  font-size: 0.78rem;
  color: var(--text-muted);
}

.menu-toggle {
  border: 1px solid var(--line);
  background: var(--surface-soft);
  color: var(--text);
  border-radius: 999px;
  padding: 0.42rem 0.85rem;
  font-weight: 700;
}

.site-nav {
  display: none;
}

.site-nav ul {
  list-style: none;
  margin: 0;
  padding: 0;
  display: flex;
  gap: 1rem;
  align-items: center;
}

.site-nav li {
  display: flex;
  align-items: center;
}

.site-nav a {
  color: var(--text-muted);
  font-weight: 650;
  font-size: 0.94rem;
  padding: 0.35rem 0.1rem;
  display: inline-flex;
  align-items: center;
  justify-content: center;
  min-height: 2.2rem;
  line-height: 1.2;
}

.site-nav__icon {
  width: 1.35rem;
  height: 1.35rem;
  display: block;
  flex: 0 0 auto;
}

.site-nav__label {
  display: none;
}

.site-nav__home-link {
  width: 2.2rem;
  padding-inline: 0.35rem;
}

.site-nav a[aria-current="page"] {
  color: #ffffff;
}

.site-nav.is-open {
  display: block;
  position: absolute;
  left: 4vw;
  right: 4vw;
  top: calc(100% + 0.55rem);
  padding: 0.8rem;
  border: 1px solid var(--line);
  border-radius: var(--radius-sm);
  background: rgba(10, 24, 41, 0.97);
}

.site-nav.is-open ul {
  display: grid;
  grid-template-columns: repeat(5, minmax(0, 1fr));
  gap: 0.5rem;
  align-items: center;
}

.site-nav.is-open li {
  display: flex;
}

.site-nav.is-open .site-nav__search {
  grid-column: 1 / -1;
}

.site-nav.is-open .site-nav__search,
.site-nav.is-open .site-nav__search .site-search {
  width: 100%;
}

.site-nav.is-open .site-nav__home-link,
.site-nav.is-open .site-nav__link {
  width: 100%;
  padding: 0.5rem;
  min-height: 2.7rem;
  border: 1px solid rgba(36, 66, 95, 0.86);
  border-radius: 10px;
  background: rgba(14, 32, 51, 0.9);
}

.site-nav.is-open a[aria-current="page"] {
  border-color: rgba(56, 189, 248, 0.9);
  background: rgba(18, 43, 66, 0.95);
  box-shadow: inset 0 0 0 1px rgba(56, 189, 248, 0.2);
}

main {
  padding-bottom: 5rem;
}

.page-hero {
  position: relative;
  padding: 4rem 0 2.4rem;
}

.page-hero__grid {
  display: grid;
  gap: 1rem;
}

.eyebrow {
  display: inline-flex;
  align-items: center;
  gap: 0.5rem;
  font-size: 0.77rem;
  text-transform: uppercase;
  letter-spacing: 0.08em;
  color: var(--text-muted);
  font-weight: 750;
  margin-bottom: 0.7rem;
}

.eyebrow::before {
  content: "";
  width: 1.8rem;
  height: 1px;
  background: var(--accent-3);
}

.eyebrow--light {
  color: rgba(239, 246, 255, 0.88);
}

.eyebrow--light::before {
  background: rgba(239, 246, 255, 0.68);
}

.page-hero h1 {
  font-size: clamp(2rem, 5.5vw, 3.5rem);
  max-width: 18ch;
  margin-bottom: 1rem;
}

.page-hero p {
  max-width: 62ch;
  color: var(--text-muted);
}

.hero-stats {
  margin-top: 1.3rem;
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: 0.7rem;
  max-width: 560px;
}

.hero-stats article {
  border: 1px solid var(--line);
  border-radius: var(--radius-sm);
  padding: 0.8rem;
  background: linear-gradient(180deg, rgba(14, 36, 58, 0.9), rgba(8, 20, 34, 0.9));
}

.hero-stats h2 {
  margin: 0;
  font-size: 1.5rem;
  color: #fff;
}

.hero-stats p {
  margin: 0;
  font-size: 0.85rem;
}

.section {
  padding: 1rem 0 2.6rem;
}

.section--tight-top {
  padding-top: 0.2rem;
}

.section h2 {
  font-size: clamp(1.5rem, 3.8vw, 2.2rem);
  margin-bottom: 0.6rem;
}

.section-subtitle {
  color: var(--text-muted);
  margin-bottom: 1.3rem;
  max-width: 60ch;
}

.card-grid {
  display: grid;
  gap: 1rem;
}

.card {
  border: 1px solid var(--line);
  background: linear-gradient(180deg, rgba(18, 40, 63, 0.94), rgba(11, 24, 41, 0.92));
  border-radius: var(--radius);
  padding: 1rem;
  box-shadow: var(--shadow);
}

.card h3 {
  margin-bottom: 0.45rem;
  font-size: 1.2rem;
}

.card p {
  color: var(--text-muted);
}

.card--icon {
  display: grid;
  grid-template-columns: 44px 1fr;
  gap: 0.8rem;
}

.card--icon img {
  width: 44px;
  height: 44px;
}

.card-list {
  display: grid;
  gap: 0.5rem;
  margin-top: 0.6rem;
  color: var(--text-muted);
}

.card-list li {
  margin: 0;
}

.button {
  border: 1px solid transparent;
  background: linear-gradient(120deg, var(--accent-2), var(--accent));
  color: #fff;
  border-radius: 999px;
  padding: 0.62rem 1rem;
  font-weight: 700;
  cursor: pointer;
  box-shadow: 0 10px 25px rgba(14, 165, 233, 0.25);
}

.button:hover {
  filter: brightness(1.06);
}

.button--soft {
  background: rgba(18, 44, 67, 0.95);
  border-color: var(--line);
  box-shadow: none;
}

.button-row {
  display: flex;
  flex-wrap: wrap;
  gap: 0.65rem;
}

.tool-panel {
  border: 1px solid var(--line);
  border-radius: calc(var(--radius) + 2px);
  background: linear-gradient(180deg, rgba(16, 37, 58, 0.95), rgba(8, 20, 35, 0.95));
  box-shadow: var(--shadow);
  overflow: clip;
}

.tool-panel__header {
  padding: 1rem 1rem 0.4rem;
}

.tool-panel__header p {
  color: var(--text-muted);
}

.change-bars-tool__layout {
  display: grid;
  gap: 1rem;
  padding: 1rem;
}

.change-bars-tool__form {
  display: grid;
  gap: 0.7rem;
}

.change-bars-tool__note {
  margin: 0;
  font-size: 0.8rem;
}

.change-bars-tool__visual {
  display: grid;
  gap: 0.55rem;
}

.change-bars-tool__canvas-wrap {
  border: 1px solid var(--line);
  border-radius: 14px;
  background: linear-gradient(180deg, rgba(8, 21, 35, 0.96), rgba(6, 16, 28, 0.95));
  box-shadow: inset 0 0 0 1px rgba(31, 56, 82, 0.3);
  min-height: 240px;
}

.change-bars-canvas {
  display: block;
  width: 100%;
  height: clamp(240px, 44vw, 340px);
  touch-action: manipulation;
}

.change-bars-tool__hint {
  margin: 0;
  font-size: 0.78rem;
}

.change-bars-legend {
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: 0.55rem;
}

.change-bars-legend__item {
  border: 1px solid var(--line);
  background: rgba(14, 32, 51, 0.84);
  border-radius: 10px;
  color: var(--text-muted);
  padding: 0.55rem 0.6rem;
  text-align: left;
  display: grid;
  gap: 0.2rem;
  cursor: pointer;
}

.change-bars-legend__item strong {
  color: #eff7ff;
  font-size: 1rem;
}

.change-bars-legend__item.is-active {
  border-color: rgba(56, 189, 248, 0.72);
  background: rgba(22, 49, 75, 0.95);
  box-shadow: inset 0 0 0 1px rgba(56, 189, 248, 0.22);
}

.change-bars-tool__metrics article {
  min-height: 4.9rem;
}

.classic-tool__layout,
.thousand-tool__layout {
  display: grid;
  gap: 1rem;
  padding: 1rem;
}

label {
  display: grid;
  gap: 0.35rem;
}

label span {
  font-size: 0.82rem;
  color: var(--text-muted);
  font-weight: 650;
}

input,
textarea,
select {
  width: 100%;
  border-radius: 10px;
  border: 1px solid var(--line);
  background: #0a1a2d;
  color: var(--text);
  padding: 0.65rem 0.72rem;
  font: inherit;
}

textarea {
  resize: vertical;
}

.inline-fields {
  display: grid;
  gap: 0.7rem;
  grid-template-columns: repeat(2, minmax(0, 1fr));
}

.inline-fields--triple {
  grid-template-columns: 1fr;
}

.classic-tool__metrics {
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: 0.65rem;
}

.classic-tool__metrics article {
  border: 1px solid var(--line);
  background: rgba(8, 20, 34, 0.82);
  border-radius: 10px;
  padding: 0.58rem;
}

.classic-tool__metrics h3 {
  margin: 0;
  font-size: 0.8rem;
  font-family: "Manrope", sans-serif;
  color: var(--text-muted);
}

.classic-tool__metrics p {
  margin: 0.2rem 0 0;
  font-size: 1.03rem;
  font-weight: 780;
}

.direct-converter-tool__metrics p,
.direct-converter-tool__steps-list li,
.direct-converter-tool__steps-list span {
  overflow-wrap: anywhere;
}

.direct-converter-tool__steps {
  display: grid;
  gap: 0.5rem;
}

.direct-converter-tool__steps h3 {
  margin: 0;
}

.classic-tool__canvas-wrap {
  min-width: 0;
}

.classic-tool__canvas {
  width: 100%;
  border-radius: 0;
  border: 1px solid var(--line);
  background: #081829;
  display: block;
  box-shadow: 0 12px 34px rgba(2, 10, 21, 0.5);
}

.classic-tool__note {
  margin-top: 0.6rem;
  font-size: 0.79rem;
}

.tool-actions {
  display: flex;
  flex-wrap: wrap;
  gap: 0.6rem;
}

.classic-tool__actions {
  margin-top: 0.7rem;
}

.tool-actions__mode {
  display: grid;
  gap: 0.2rem;
  margin-left: auto;
  min-width: 220px;
}

.tool-actions__mode span {
  font-size: 0.74rem;
  color: var(--text-muted);
  font-weight: 650;
}

.tool-actions__mode select {
  min-width: 220px;
  height: 2.45rem;
  background: rgba(18, 44, 67, 0.95);
  border-color: var(--line);
}

.muted {
  color: var(--text-muted);
}

.thousand-tool__form--builder {
  display: grid;
  gap: 0.9rem;
}

.builder-rows-panel {
  border: 1px solid var(--line);
  border-radius: 12px;
  background: rgba(7, 18, 31, 0.72);
  padding: 0.72rem;
  display: grid;
  gap: 0.6rem;
}

.builder-rows-panel__label {
  margin: 0;
  font-size: 0.8rem;
  color: var(--text-muted);
  font-weight: 700;
  letter-spacing: 0.02em;
}

.builder-rows {
  display: grid;
  gap: 0.52rem;
}

.builder-row {
  border: 1px solid var(--line);
  border-radius: 10px;
  background: rgba(11, 27, 44, 0.85);
  padding: 0.48rem;
  display: grid;
  gap: 0.42rem;
  grid-template-columns: auto auto minmax(0, 1fr) auto;
  grid-template-areas:
    "delete emoji label order"
    "delete emoji count color";
  align-items: center;
}

.builder-row__delete {
  grid-area: delete;
  min-height: 4.2rem;
  border-radius: 8px;
  padding-inline: 0.58rem;
}

.builder-row__emoji {
  grid-area: emoji;
  width: 3rem;
  height: 3rem;
  border-radius: 8px;
  display: grid;
  place-items: center;
  padding: 0;
  font-family: "Apple Color Emoji", "Segoe UI Emoji", "Noto Color Emoji", sans-serif;
}

.builder-row__emoji-value {
  font-size: 1.4rem;
  line-height: 1;
}

.builder-row__label {
  grid-area: label;
  min-width: 0;
}

.builder-row__count {
  grid-area: count;
}

.builder-row__color {
  grid-area: color;
  width: 3rem;
  height: 2.5rem;
  border-radius: 8px;
  padding: 0.15rem;
}

.builder-row__order {
  grid-area: order;
  display: grid;
  gap: 0.32rem;
}

.builder-row__move-up,
.builder-row__move-down {
  min-width: 2rem;
  padding: 0.36rem 0.45rem;
  border-radius: 8px;
}

.button-add-row {
  justify-self: start;
}

.emoji-picker {
  position: fixed;
  inset: 0;
  z-index: 90;
  display: grid;
  place-items: center;
}

.emoji-picker[hidden] {
  display: none;
}

.emoji-picker__backdrop {
  position: absolute;
  inset: 0;
  background: rgba(2, 8, 16, 0.75);
}

.emoji-picker__panel {
  position: relative;
  width: min(760px, 92vw);
  max-height: 84vh;
  border: 1px solid var(--line);
  border-radius: 14px;
  padding: 0.85rem;
  background: linear-gradient(180deg, rgba(12, 30, 49, 0.98), rgba(7, 19, 33, 0.98));
  box-shadow: var(--shadow);
  display: grid;
  gap: 0.62rem;
}

.emoji-picker__title {
  margin: 0;
  font-weight: 700;
}

.emoji-picker__actions {
  display: flex;
  flex-wrap: wrap;
  gap: 0.55rem;
}

.emoji-picker__grid {
  border: 1px solid var(--line);
  border-radius: 10px;
  padding: 0.45rem;
  background: rgba(4, 14, 24, 0.88);
  display: grid;
  grid-template-columns: repeat(8, minmax(0, 1fr));
  gap: 0.35rem;
  overflow: auto;
  max-height: min(52vh, 460px);
}

.emoji-picker__item {
  border: 1px solid var(--line);
  border-radius: 8px;
  background: rgba(15, 36, 58, 0.92);
  color: var(--text);
  min-height: 2.2rem;
  display: grid;
  place-items: center;
  cursor: pointer;
  font-size: 1.16rem;
  font-family: "Apple Color Emoji", "Segoe UI Emoji", "Noto Color Emoji", sans-serif;
}

.emoji-picker__item:hover {
  border-color: rgba(56, 189, 248, 0.62);
}

.thousand-tool__display {
  min-width: 0;
}

.thousand-tool__title {
  margin-bottom: 0.5rem;
}

.thousand-tool__legend {
  display: grid;
  gap: 0.45rem;
  margin-bottom: 0.75rem;
}

.legend-item {
  display: grid;
  grid-template-columns: 28px 1fr auto;
  align-items: center;
  gap: 0.5rem;
  border: 1px solid var(--line);
  border-radius: 10px;
  padding: 0.35rem 0.5rem;
  background: rgba(7, 18, 31, 0.75);
}

.legend-symbol {
  font-size: 1rem;
  text-align: center;
}

.legend-count {
  color: var(--text-muted);
  font-size: 0.85rem;
}

.thousand-tool__grid {
  border: 1px solid var(--line);
  border-radius: 0;
  background: #081728;
  padding: 0.5rem;
  display: grid;
  grid-template-columns: repeat(25, minmax(0, 1fr));
  gap: 0.12rem;
  box-shadow: 0 12px 34px rgba(2, 10, 21, 0.5);
}

.thousand-tool__hidden-field {
  display: none;
}

.thousand-tool--story .thousand-tool__layout {
  display: block;
}

.thousand-tool--story .thousand-tool__display--story {
  margin-bottom: 0.9rem;
}

.thousand-tool--story .thousand-tool__title {
  margin-bottom: 0.35rem;
}

.thousand-tool__story-intro {
  margin-bottom: 0.9rem;
  color: var(--text-muted);
}

.thousand-tool--story .thousand-tool__form--story {
  display: grid;
  gap: 0.85rem;
}

.thousand-tool--stacked .thousand-tool__layout {
  grid-template-columns: 1fr;
}

.thousand-tool--stacked .thousand-tool__form {
  order: 1;
}

.thousand-tool--stacked .thousand-tool__display {
  order: 2;
}

.thousand-tool--stacked.is-story-loaded .thousand-tool__form {
  order: 2;
}

.thousand-tool--stacked.is-story-loaded .thousand-tool__display {
  order: 1;
}

.thousand-cell {
  aspect-ratio: 1 / 1;
  position: relative;
  overflow: hidden;
  border-radius: 2px;
}

.thousand-cell__back {
  position: absolute;
  inset: 0;
  border-radius: 2px;
  display: grid;
  place-items: center;
  transition: opacity 260ms ease, transform 320ms cubic-bezier(0.2, 0.8, 0.2, 1);
}

.thousand-cell__back {
  border: 1px solid rgba(9, 20, 34, 0.28);
  background: #22384f;
  opacity: 1;
  transform: scale(1);
  font-family: "Apple Color Emoji", "Segoe UI Emoji", "Noto Color Emoji", sans-serif;
}

.thousand-cell__emoji {
  font-size: clamp(0.45rem, 1.9vw, 0.85rem);
  line-height: 1;
}

.thousand-cell__cover {
  position: absolute;
  inset: 0;
  border-radius: 2px;
  background: #17293e;
  border: 1px solid #1f3852;
  opacity: 1;
  transform: scale(1);
  transition: opacity 260ms ease, transform 320ms cubic-bezier(0.2, 0.8, 0.2, 1);
  will-change: opacity, transform;
}

.thousand-cell.is-revealed .thousand-cell__cover {
  opacity: 0;
  transform: scale(0.9);
}

.story-nav,
.answer-nav {
  display: flex;
  flex-wrap: wrap;
  gap: 0.65rem;
  margin-top: 1rem;
}

.story-nav a,
.answer-nav a {
  border: 1px solid var(--line);
  border-radius: 999px;
  padding: 0.4rem 0.8rem;
  color: var(--text-muted);
}

.story-nav a:hover,
.answer-nav a:hover {
  color: #fff;
}

.story-nav--inline {
  margin-top: 0.9rem;
}

.story-pagination {
  display: flex;
  flex-wrap: wrap;
  gap: 0.45rem;
  margin-top: 1.3rem;
}

.story-pagination a {
  border: 1px solid var(--line);
  border-radius: 9px;
  padding: 0.35rem 0.62rem;
  color: var(--text-muted);
  min-width: 2rem;
  text-align: center;
}

.story-pagination a[aria-current="page"] {
  color: #fff;
  background: rgba(14, 165, 233, 0.2);
  border-color: rgba(56, 189, 248, 0.62);
}

.meta-row {
  display: flex;
  flex-wrap: wrap;
  gap: 0.6rem;
  color: var(--text-muted);
  font-size: 0.86rem;
}

.meta-chip {
  border: 1px solid var(--line);
  border-radius: 999px;
  padding: 0.2rem 0.65rem;
  background: rgba(9, 22, 37, 0.8);
}

.meta-chip--link {
  display: inline-flex;
  align-items: center;
  color: var(--text-muted);
}

.meta-chip--link:hover {
  color: #fff;
  border-color: rgba(56, 189, 248, 0.62);
}

.section--sources {
  padding-top: 0.2rem;
}

.story-sources__heading {
  margin: 0 0 0.6rem;
  font-size: 0.72rem;
  letter-spacing: 0.12em;
  text-transform: uppercase;
  color: rgba(159, 181, 205, 0.72);
  font-family: "Manrope", "Avenir Next", "Segoe UI", sans-serif;
}

.story-sources {
  list-style: none;
  margin: 0;
  padding: 0;
  display: grid;
  gap: 0.38rem;
  font-size: 0.8rem;
  color: rgba(159, 181, 205, 0.78);
}

.story-sources li {
  line-height: 1.45;
}

.story-sources a {
  color: rgba(159, 181, 205, 0.85);
}

.story-sources a:hover {
  color: #fff;
}

.site-footer {
  border-top: 1px solid rgba(159, 181, 205, 0.2);
  background: rgba(3, 10, 19, 0.9);
  padding: 2rem 0 2.2rem;
}

.site-footer__inner {
  display: grid;
  gap: 1.2rem;
}

.footer-links {
  list-style: none;
  padding: 0;
  margin: 0;
  display: grid;
  gap: 0.35rem;
}

.footer-links a {
  color: var(--text-muted);
}

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

.copy-symbol {
  width: 100%;
  border: 1px solid var(--line);
  border-radius: 14px;
  background: radial-gradient(circle at 15% 15%, rgba(56, 189, 248, 0.12), rgba(8, 20, 34, 0.94) 60%);
  color: #f1f7ff;
  position: relative;
  cursor: pointer;
  display: grid;
  place-items: center;
  transition: border-color 180ms ease, transform 140ms ease, background 180ms ease;
}

.copy-symbol:hover {
  border-color: #3f668a;
}

.copy-symbol:active {
  transform: scale(0.995);
}

.copy-symbol--main {
  min-height: 190px;
}

.copy-symbol--small {
  min-height: 110px;
}

.copy-symbol__glyph {
  font-family: "IBM Plex Serif", "Georgia", serif;
  line-height: 1;
}

.copy-symbol--main .copy-symbol__glyph {
  font-size: clamp(4.8rem, 11vw, 7.8rem);
}

.copy-symbol--small .copy-symbol__glyph {
  font-size: clamp(2.2rem, 6vw, 3rem);
}

.copy-symbol--command {
  min-height: 116px;
  place-items: stretch;
}

.copy-symbol--command .copy-symbol__glyph {
  width: 100%;
  padding: 0.95rem 2.2rem 0.95rem 0.85rem;
  font-family: ui-monospace, SFMono-Regular, Menlo, Monaco, Consolas, "Liberation Mono", monospace;
  font-size: clamp(0.94rem, 2.25vw, 1.12rem);
  line-height: 1.35;
  text-align: left;
  display: flex;
  align-items: center;
}

.copy-symbol--command .copy-symbol__glyph code {
  white-space: normal;
  overflow-wrap: anywhere;
  word-break: break-word;
  font-size: inherit;
}

.copy-symbol__icon {
  position: absolute;
  top: 0.55rem;
  right: 0.55rem;
  width: 18px;
  height: 18px;
  color: #cdddf0;
}

.copy-symbol__icon .icon {
  position: absolute;
  inset: 0;
  width: 100%;
  height: 100%;
  transition: opacity 140ms ease;
}

.copy-symbol__icon .icon-check {
  opacity: 0;
}

.copy-symbol.is-copied {
  border-color: #4ee48f;
  background: radial-gradient(circle at 15% 15%, rgba(34, 197, 94, 0.16), rgba(8, 20, 34, 0.94) 60%);
}

.copy-symbol.is-copied .icon-clipboard {
  opacity: 0;
}

.copy-symbol.is-copied .icon-check {
  opacity: 1;
  color: #8ff7b6;
}

.symbol-grid {
  display: grid;
  gap: 0.95rem;
}

.symbol-grid--latex {
  grid-template-columns: 1fr;
}

.symbol-tile {
  display: grid;
  gap: 0.5rem;
}

.symbol-meta {
  border: 1px solid var(--line);
  border-radius: 10px;
  background: rgba(10, 22, 36, 0.7);
  padding: 0.1rem 0.55rem 0.5rem;
}

.symbol-meta summary {
  cursor: pointer;
  color: #dce9f7;
  font-weight: 700;
  list-style: none;
  padding: 0.45rem 0 0.2rem;
}

.symbol-meta summary::-webkit-details-marker {
  display: none;
}

.symbol-meta p {
  margin: 0;
  color: var(--text-muted);
  font-size: 0.9rem;
}

@media (min-width: 780px) {
  .menu-toggle {
    display: none;
  }

  .site-nav {
    display: block;
    position: static;
  }

  .site-nav__link {
    justify-content: flex-start;
    gap: 0.38rem;
  }

  .site-nav__link .site-nav__icon {
    display: none;
  }

  .site-nav__label {
    display: inline;
  }

  .site-nav__home-link {
    width: auto;
    min-width: 2.2rem;
    padding-inline: 0.35rem;
  }

  .page-hero {
    padding-top: 4.8rem;
  }

  .page-hero__grid {
    grid-template-columns: 1.2fr 1fr;
    align-items: end;
  }

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

  .classic-tool__layout,
  .thousand-tool__layout {
    grid-template-columns: 0.95fr 1.05fr;
    align-items: start;
  }

  .change-bars-tool__layout {
    grid-template-columns: minmax(230px, 0.8fr) minmax(0, 1.2fr);
    align-items: start;
  }

  .change-bars-tool__metrics {
    grid-column: 1 / -1;
    grid-template-columns: repeat(5, minmax(0, 1fr));
  }

  .thousand-tool--stacked .thousand-tool__layout {
    grid-template-columns: 1fr;
  }

  .inline-fields--triple {
    grid-template-columns: repeat(3, minmax(0, 1fr));
  }

  .builder-row {
    grid-template-columns: auto auto minmax(0, 1fr) minmax(120px, 0.48fr) auto auto;
    grid-template-areas: "delete emoji label count color order";
  }

  .builder-row__delete {
    min-height: 2.5rem;
  }

  .emoji-picker__grid {
    grid-template-columns: repeat(12, minmax(0, 1fr));
  }

  .thousand-tool__grid {
    grid-template-columns: repeat(40, minmax(0, 1fr));
  }

  .site-footer__inner {
    grid-template-columns: 1.4fr 1fr;
  }

  .symbol-grid {
    grid-template-columns: repeat(3, minmax(0, 1fr));
  }

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

@media (min-width: 1040px) {
  .card-grid--three {
    grid-template-columns: repeat(3, minmax(0, 1fr));
  }

  .symbol-grid {
    grid-template-columns: repeat(5, minmax(0, 1fr));
  }

  .symbol-grid--latex {
    grid-template-columns: repeat(4, minmax(0, 1fr));
  }
}

.card--builder-link {
  display: block;
  text-decoration: none;
  background: linear-gradient(120deg, #3b82f6, #38bdf8);
  border-color: rgba(147, 197, 253, 0.4);
  color: #eff6ff;
  box-shadow: 0 18px 40px rgba(14, 116, 219, 0.35);
  transition: transform 160ms ease, filter 160ms ease;
}

.card--builder-link p {
  color: rgba(239, 246, 255, 0.95);
}

.card--builder-link:hover {
  transform: translateY(-2px);
  filter: brightness(1.05);
  color: #ffffff;
}

.card--latest-story {
  padding: 1.2rem;
}

.card--latest-story h2 {
  margin-bottom: 0.55rem;
}

.card--latest-story .meta-row {
  color: rgba(239, 246, 255, 0.9);
}

.card--latest-story .meta-chip {
  border-color: rgba(224, 242, 254, 0.55);
  background: rgba(37, 99, 235, 0.35);
}

.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;
}

.site-nav__search {
  display: flex;
  align-items: center;
  min-width: 11.4rem;
}

.site-search {
  position: relative;
}

.site-search__input {
  width: 100%;
  height: 2.2rem;
  border-radius: 999px;
  border: 1px solid var(--line);
  background: rgba(16, 34, 56, 0.9);
  color: var(--text-muted);
  padding: 0.38rem 0.82rem;
  font-size: 0.92rem;
  line-height: 1.1;
}

.site-search__input:focus {
  outline: none;
  border-color: rgba(56, 189, 248, 0.65);
  color: #ffffff;
}

.site-search__results {
  position: absolute;
  top: calc(100% + 0.4rem);
  right: 0;
  left: auto;
  width: min(200%, calc(100vw - 1.2rem));
  border: 1px solid var(--line);
  border-radius: 12px;
  background: rgba(7, 18, 31, 0.98);
  box-shadow: var(--shadow);
  max-height: min(64vh, 520px);
  overflow: auto;
  padding: 0.45rem;
  z-index: 55;
}

.site-search__group {
  display: grid;
  gap: 0.3rem;
  margin-bottom: 0.35rem;
}

.site-search__group:last-child {
  margin-bottom: 0;
}

.site-search__group h3 {
  margin: 0;
  font-size: 0.68rem;
  letter-spacing: 0.08em;
  text-transform: uppercase;
  font-family: "Manrope", "Avenir Next", "Segoe UI", sans-serif;
  color: rgba(159, 181, 205, 0.82);
}

.site-search__result {
  border: 1px solid rgba(36, 66, 95, 0.8);
  border-radius: 8px;
  padding: 0.4rem 0.5rem;
  display: grid;
  gap: 0.12rem;
  color: var(--text-muted);
  background: rgba(14, 32, 51, 0.88);
}

.site-search__result strong {
  color: #e7f0fb;
  font-size: 0.83rem;
  line-height: 1.2;
}

.site-search__result span {
  font-size: 0.76rem;
  line-height: 1.3;
}

.site-search__result:hover {
  border-color: rgba(56, 189, 248, 0.62);
  color: #ffffff;
}

.site-search__empty {
  margin: 0;
  font-size: 0.82rem;
  color: var(--text-muted);
  padding: 0.3rem 0.4rem;
}

.site-nav.is-open .site-nav__search {
  width: 100%;
  min-width: 0;
}

.site-nav.is-open .site-search__results {
  position: static;
  margin-top: 0.45rem;
  width: 100%;
}