:root {
    --slate-0: #FFFFFF;
    --slate-10: #F3F5F5;
    --slate-20: #E9EBEB;
    --slate-30: #DFE0E0;
    --slate-40: #D4D5D5;
    --slate-50: #B9BABA;
    --slate-60: #969799;
    --slate-70: #646566;
    --slate-80: #49494B;
    --slate-90: #35373A;
    --slate-100: #292B2D;
    --slate: #1E1F21;
    --core-control-fill: var(--slate);
    --core-control-text: var(--slate-0);
    --core-shadow-subtle: rgba(0, 0, 0, 0.06);
    --core-shadow-elevated: rgba(0, 0, 0, 0.1);
    --core-backdrop: rgba(0, 0, 0, 0.4);
    --motion-ease: cubic-bezier(0.4, 0, 0.2, 1);
    --motion-fast: 150ms;
    --motion-base: 250ms;
    --motion-slow: 400ms;
    --font-family-base: "Aptos", -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, Helvetica, Arial, sans-serif;
    --font-family-mono: "Aptos Mono", ui-monospace, SFMono-Regular, Menlo, monospace;
    --typo-display-lg-size: 42px;
    --typo-display-lg-line: 44px;
    --typo-display-lg-tracking: 0px;
    --typo-display-sm-size: 34px;
    --typo-display-sm-line: 40px;
    --typo-display-sm-tracking: 0.22px;
    --typo-h1-size: 22px;
    --typo-h1-line: 28px;
    --typo-h1-tracking: 0px;
    --typo-h3-size: 18px;
    --typo-h3-line: 24px;
    --typo-h3-tracking: 0px;
    --typo-h4-size: 16px;
    --typo-h4-line: 22px;
    --typo-h4-tracking: 0px;
    --typo-subtitle-size: 14px;
    --typo-subtitle-line: 16px;
    --typo-subtitle-tracking: 0px;
    --typo-base-size: 12px;
    --typo-base-line: 13.8px;
    --typo-base-tracking: 0px;
    --typo-caption-size: 10px;
    --typo-caption-line: 12.5px;
    --typo-caption-tracking: 0px;
    --toolbar-control-size: calc(1px + 6px + 8px + var(--typo-h4-line) + 8px + 6px + 1px);
  }
  :root,
  [data-theme="light"] {
    --core-bg: var(--slate-0);
    --core-bg-raised: var(--slate-10);
    --core-border: var(--slate-20);
    --core-text: var(--slate-100);
    --core-text-muted: var(--slate-60);
    --core-accent: var(--slate);
    --core-border-strong: var(--slate-30);
    --core-search-action-fill: var(--slate);
    --core-search-action-text: var(--slate-0);
    --core-tile-fill: var(--slate-0);
    --core-tile-label: var(--slate-70);
    --core-chip-fill: var(--slate-20);
    --core-chip-fill-hover: var(--slate-30);
    --core-positive-fill: #23C97A;
    --core-positive-text: #1E7F4F;
    --core-positive-outline: #8FDCB4;
    --core-positive-surface: #E6F9EF;
    --core-negative-fill: #E03060;
    --core-negative-text: #B0203F;
    --core-negative-outline: #F3B6C4;
    --core-negative-surface: #FCE8EC;
  }
  [data-theme="dark"] {
    --core-bg: var(--slate);
    --core-bg-raised: var(--slate-100);
    --core-border: var(--slate-90);
    --core-text: var(--slate-10);
    --core-text-muted: var(--slate-50);
    --core-accent: var(--slate-20);
    --core-border-strong: var(--slate-80);
    --core-search-action-fill: var(--slate-90);
    --core-search-action-text: var(--slate-0);
    --core-tile-fill: var(--slate);
    --core-tile-label: var(--slate-50);
    --core-chip-fill: var(--slate-90);
    --core-chip-fill-hover: var(--slate-80);
    --core-positive-fill: #23C97A;
    --core-positive-text: #4EC98A;
    --core-positive-outline: #2A5C42;
    --core-positive-surface: #1E2E28;
    --core-negative-fill: #E03060;
    --core-negative-text: #E0486A;
    --core-negative-outline: #5C2A42;
    --core-negative-surface: #2E1E28;
  }
  * { box-sizing: border-box; }
  html, body {
    margin: 0;
    padding: 0;
    background: var(--core-bg);
    color: var(--core-text);
    font-family: var(--font-family-base);
  }
  body { min-height: 100vh; display: flex; flex-direction: column; }
  a { color: inherit; }
  button {
    font-family: inherit;
    cursor: pointer;
    transition: color var(--motion-fast) var(--motion-ease),
      background-color var(--motion-fast) var(--motion-ease),
      border-color var(--motion-fast) var(--motion-ease),
      outline-offset var(--motion-fast) var(--motion-ease),
      transform var(--motion-fast) var(--motion-ease);
  }
  button:active { transform: scale(0.96); }
  button:focus-visible {
    outline: 2px solid var(--core-accent);
    outline-offset: 2px;
  }
  .category-trigger:focus-visible {
    outline-color: var(--core-control-text);
  }
  .search-bar .search-clear-button:focus-visible {
    outline-color: var(--core-search-action-text);
  }
  header.app-header {
    display: grid;
    grid-template-columns: auto 1fr auto;
    align-items: center;
    column-gap: 16px;
    padding: 24px 32px;
    background: var(--core-bg);
    border-bottom: 1px solid var(--core-border);
  }
  header.app-header h1 {
    margin: 0;
    justify-self: start;
    min-width: 0;
  }
  .home-button {
    display: inline-flex;
    align-items: center;
    gap: 16px;
    max-width: 100%;
    border: none;
    background: none;
    padding: 0;
    margin: 0;
    font: inherit;
    color: inherit;
    white-space: nowrap;
  }
  .home-button:hover .brand-label { color: var(--core-accent); }
  .brand-mark {
    display: block;
    height: 24px;
    width: auto;
    flex-shrink: 0;
  }
  [data-theme="light"] .brand-mark-on-dark { display: none; }
  [data-theme="dark"] .brand-mark-on-light { display: none; }
  .brand-divider {
    width: 1px;
    height: 24px;
    flex-shrink: 0;
    background: #969799;
  }
  [data-theme="dark"] .brand-divider { background: #49494B; }
  .brand-title {
    position: relative;
    display: inline-flex;
    align-items: center;
    min-width: 0;
  }
  .brand-label {
    font-family: "Aptos", sans-serif;
    font-size: var(--typo-h3-size);
    font-weight: 400;
    color: var(--core-text);
    white-space: nowrap;
    overflow: hidden;
    text-overflow: ellipsis;
  }
  .brand-version {
    position: absolute;
    left: 100%;
    top: 50%;
    display: inline-flex;
    align-items: center;
    margin-left: 8px;
    padding: 2px 8px;
    opacity: 0;
    pointer-events: none;
    transform: translateY(-50%) translateX(-4px);
    border: 1px solid #292B2D;
    border-radius: 999px;
    font-family: "Aptos", sans-serif;
    font-size: var(--typo-caption-size);
    font-weight: 400;
    color: #292B2D;
    white-space: nowrap;
    transition: opacity var(--motion-fast) var(--motion-ease),
      transform var(--motion-fast) var(--motion-ease);
  }
  .home-button:hover .brand-version,
  .home-button:focus-within .brand-version {
    opacity: 1;
    transform: translateY(-50%) translateX(0);
  }
  [data-theme="dark"] .brand-version {
    border-color: #969799;
    color: #F3F5F5;
  }
  nav.view-tabs {
    display: flex;
    gap: 24px;
    justify-self: center;
    align-self: stretch;
    margin-bottom: -24px;
  }
  nav.view-tabs button {
    display: flex;
    align-items: center;
    border: none;
    border-bottom: 2px solid transparent;
    background: transparent;
    color: var(--core-text-muted);
    padding: 0px 0 18px;
    font-size: var(--typo-subtitle-size);
    line-height: var(--typo-subtitle-line);
    letter-spacing: var(--typo-subtitle-tracking);
    font-weight: 500;
    white-space: nowrap;
  }
  nav.view-tabs button:hover { color: var(--core-text); }
  nav.view-tabs button[aria-selected="true"] {
    color: var(--core-text);
    border-bottom-color: var(--core-text);
    font-weight: 600;
  }
  button.theme-toggle {
    display: flex;
    align-items: center;
    justify-content: center;
    justify-self: end;
    width: 36px;
    height: 36px;
    flex-shrink: 0;
    border: none;
    background: transparent;
    color: var(--core-text-muted);
    padding: 0;
  }
  button.theme-toggle:hover { color: var(--core-accent); }
  button.theme-toggle svg { width: 18px; height: 18px; }
  @media (max-width: 560px) {
    header.app-header {
      grid-template-columns: 1fr auto;
      grid-template-areas:
        "home theme"
        "nav nav";
      row-gap: 8px;
    }
    header.app-header h1 { grid-area: home; }
    nav.view-tabs {
      grid-area: nav;
      justify-self: center;
      align-self: center;
      margin-bottom: 0;
    }
    nav.view-tabs button { padding: 8px 0 4px; }
    button.theme-toggle { grid-area: theme; }
  }
  .toolbar {
    display: flex;
    align-items: stretch;
    gap: 8px;
    padding: 12px 20px;
    background: var(--core-bg);
  }
  .toolbar label {
    font-size: var(--typo-subtitle-size);
    line-height: var(--typo-subtitle-line);
    letter-spacing: var(--typo-subtitle-tracking);
    color: var(--core-text-muted);
    white-space: nowrap;
  }
  .search-bar {
    display: flex;
    align-items: center;
    gap: 8px;
    flex: 1;
    min-width: 0;
    background: var(--core-bg-raised);
    border: 1px solid var(--core-border-strong);
    border-radius: 10px;
    padding: 6px 12px 6px 6px;
    box-shadow: 0 4px 10px var(--core-shadow-subtle);
    transition: border-color var(--motion-fast) var(--motion-ease);
  }
  [data-theme="light"] .search-bar {
    box-shadow: 0 2px 6px rgba(0, 0, 0, 0.03);
  }
  .search-bar:focus-within {
    border-color: var(--core-accent);
  }
  .search-bar .search-divider {
    width: 1px;
    height: 22px;
    background: var(--core-border);
    flex-shrink: 0;
  }
  .search-bar input[type="search"] {
    flex: 1;
    min-width: 0;
    border: none;
    background: transparent;
    color: var(--core-text);
    font-size: var(--typo-h4-size);
    line-height: var(--typo-h4-line);
    letter-spacing: var(--typo-h4-tracking);
    padding: 8px 4px;
  }
  .search-bar input[type="search"]:focus { outline: none; }
  .search-bar input[type="search"]::placeholder {
    color: var(--core-text-muted);
    font-weight: 300;
    opacity: 1;
    transition: opacity var(--motion-fast) var(--motion-ease);
  }
  .search-bar:focus-within input[type="search"]::placeholder { opacity: 0.5; }
  .search-bar input[type="search"]::-webkit-search-cancel-button { display: none; }
  .search-bar .search-icon,
  .search-bar .search-clear-button {
    display: flex;
    align-items: center;
    justify-content: center;
    flex-shrink: 0;
    width: 32px;
    height: 32px;
    border-radius: 999px;
    background: var(--core-search-action-fill);
    color: var(--core-search-action-text);
  }
  .search-bar .search-icon svg,
  .search-bar .search-clear-button svg { width: 18px; height: 18px; display: block; }
  .search-bar .search-icon {
    pointer-events: none;
  }
  [data-theme="light"] .search-bar .search-icon {
    background: var(--slate-10);
    color: var(--core-text);
  }
  [data-theme="dark"] .search-bar .search-icon {
    background: var(--slate-100);
  }
  .search-bar .search-clear-button {
    border: none;
    padding: 0;
    transition: opacity var(--motion-fast) var(--motion-ease);
  }
  .search-bar .search-clear-button:hover { opacity: 0.85; }
  .search-bar .search-clear-button[hidden],
  .search-bar .search-icon[hidden] { display: none; }
  .shortcut-hint {
    display: inline-flex;
    align-items: center;
    gap: 2px;
    flex-shrink: 0;
    margin-left: 8px;
    font-size: var(--typo-base-size);
    letter-spacing: var(--typo-base-tracking);
    font-weight: 400;
    line-height: 1;
    color: var(--core-text-muted);
    background: var(--core-bg-raised);
    border: 1px solid var(--core-border);
    border-radius: 4px;
    padding: 3px 6px;
    font-family: var(--font-family-mono);
    white-space: nowrap;
    opacity: 1;
  }
  .shortcut-hint[hidden] { display: none; }
  .category-dropdown {
    position: relative;
    flex-shrink: 0;
    padding-right: 6px;
  }
  .category-trigger {
    display: flex;
    align-items: center;
    gap: 8px;
    background: var(--slate-20);
    color: var(--core-control-text);
    border: none;
    border-radius: 4px;
    padding: 10px 12px 10px 16px;
    font-size: var(--typo-subtitle-size);
    line-height: var(--typo-subtitle-line);
    letter-spacing: var(--typo-subtitle-tracking);
    max-width: 180px;
  }
  .category-trigger:not([aria-expanded="true"]):hover {
    background: var(--core-border-strong);
  }
  .category-trigger .truncate {
    overflow: hidden;
    text-overflow: ellipsis;
    white-space: nowrap;
  }
  .category-trigger .chevron {
    flex-shrink: 0;
    width: 14px;
    height: 14px;
    color: var(--core-control-text);
    transition: transform var(--motion-fast) var(--motion-ease);
  }
  .category-trigger[aria-expanded="true"] .chevron { transform: rotate(180deg); }
  [data-theme="light"] .category-trigger,
  [data-theme="light"] .category-trigger .chevron {
    color: var(--slate-100);
  }
  [data-theme="light"] .category-trigger[aria-expanded="true"] {
    background: var(--core-accent);
    color: var(--core-bg);
  }
  [data-theme="light"] .category-trigger[aria-expanded="true"] .chevron {
    color: var(--core-bg);
  }
  [data-theme="dark"] .category-trigger {
    background: var(--slate);
    color: var(--slate-10);
  }
  [data-theme="dark"] .category-trigger .chevron {
    color: var(--slate-10);
  }
  .category-panel {
    position: absolute;
    top: calc(100% + 16px);
    left: -7px;
    z-index: 20;
    width: max-content;
    min-width: 200px;
    max-height: 300px;
    overflow-y: auto;
    background: var(--core-bg);
    border: 1px solid var(--core-border);
    border-radius: 8px;
    padding: 8px;
    box-shadow: 0 20px 25px -5px var(--core-shadow-elevated), 0 8px 10px -6px var(--core-shadow-elevated);
  }
  .category-panel.flip-up,
  .settings-panel.flip-up {
    top: auto;
    bottom: calc(100% + 16px);
    transform: translateY(4px);
  }
  .category-panel,
  .settings-panel {
    opacity: 0;
    visibility: hidden;
    pointer-events: none;
    transform: translateY(-4px);
    transition: opacity var(--motion-base) var(--motion-ease),
      transform var(--motion-base) var(--motion-ease),
      visibility 0s linear var(--motion-base);
  }
  .category-panel.open,
  .settings-panel.open {
    opacity: 1;
    visibility: visible;
    pointer-events: auto;
    transform: translateY(0);
    transition: opacity var(--motion-base) var(--motion-ease),
      transform var(--motion-base) var(--motion-ease),
      visibility 0s linear 0s;
  }
  .category-panel .dropdown-item {
    display: flex;
    align-items: center;
    width: 100%;
    border: none;
    background: transparent;
    color: var(--slate-80);
    border-radius: 4px;
    margin-bottom: 4px;
    padding: 8px 12px;
    font-size: var(--typo-subtitle-size);
    line-height: var(--typo-subtitle-line);
    letter-spacing: var(--typo-subtitle-tracking);
    text-align: left;
  }
  [data-theme="dark"] .category-panel .dropdown-item {
    color: var(--slate-40);
  }
  .category-panel .dropdown-item:last-child {
    margin-bottom: 0px;
  }
  .category-panel .dropdown-item:hover {
    background: var(--core-bg-raised);
  }
  .category-panel .dropdown-item[aria-selected="true"] {
    background: var(--core-accent);
    color: var(--core-bg);
  }
  .category-panel .dropdown-item .truncate {
    overflow: hidden;
    text-overflow: ellipsis;
    white-space: nowrap;
  }
  .category-panel .dropdown-item .item-count {
    margin-left: auto;
    padding-left: 12px;
    font-size: var(--typo-subtitle-size);
    line-height: var(--typo-subtitle-line);
    letter-spacing: var(--typo-subtitle-tracking);
    color: inherit;
    opacity: 0.65;
    font-variant-numeric: tabular-nums;
  }
  .settings-dropdown {
    position: relative;
    flex-shrink: 0;
    width: var(--toolbar-control-size);
    height: var(--toolbar-control-size);
  }
  .settings-trigger {
    display: flex;
    align-items: center;
    justify-content: center;
    width: 100%;
    height: 100%;
    background: var(--core-bg-raised);
    color: var(--core-text);
    border: 1px solid var(--core-border-strong);
    border-radius: 6px;
    box-shadow: 0 4px 10px var(--core-shadow-subtle);
  }
  .settings-trigger:hover { border-color: var(--core-accent); }
  .settings-trigger[aria-expanded="true"] {
    background: var(--core-accent);
    color: var(--core-bg);
    border-color: var(--core-accent);
  }
  .settings-trigger[aria-expanded="true"]:focus-visible {
    outline-color: var(--core-bg);
  }
  .settings-trigger svg { width: 18px; height: 18px; display: block; }
  .settings-panel {
    position: absolute;
    top: calc(100% + 16px);
    right: 0;
    z-index: 20;
    width: 260px;
    overflow-y: auto;
    background: var(--core-bg);
    border: 1px solid var(--core-border);
    border-radius: 8px;
    padding: 24px;
    box-shadow: 0 20px 25px -5px var(--core-shadow-elevated), 0 8px 10px -6px var(--core-shadow-elevated);
  }
  .settings-panel-header {
    display: flex;
    align-items: center;
    justify-content: space-between;
    margin-bottom: 14px;
  }
  .settings-panel-header .settings-title {
    font-size: var(--typo-h4-size);
    line-height: var(--typo-h4-line);
    letter-spacing: var(--typo-h4-tracking);
    font-weight: 600;
  }
  .settings-reset {
    display: flex;
    align-items: center;
    gap: 4px;
    border: none;
    background: transparent;
    color: var(--core-text-muted);
    font-size: var(--typo-subtitle-size);
    line-height: var(--typo-subtitle-line);
    letter-spacing: var(--typo-subtitle-tracking);
    font-weight: 500;
    padding: 2px;
  }
  .settings-reset:hover { color: var(--core-accent); }
  .settings-reset svg { width: 14px; height: 14px; }
  .settings-group { margin-bottom: 16px; }
  .settings-group:last-child { margin-bottom: 0; }
  .settings-row {
    display: flex;
    align-items: center;
    justify-content: space-between;
    margin-bottom: 8px;
  }
  .settings-row .settings-label {
    font-size: var(--typo-subtitle-size);
    line-height: var(--typo-subtitle-line);
    letter-spacing: var(--typo-subtitle-tracking);
    font-weight: 500;
    color: var(--core-text-muted);
  }
  .settings-row .settings-value {
    font-size: var(--typo-subtitle-size);
    line-height: var(--typo-subtitle-line);
    letter-spacing: var(--typo-subtitle-tracking);
    color: var(--core-text-muted);
    font-family: var(--font-family-mono);
  }
  .weight-picker {
    display: flex;
    width: 100%;
    border: 1px solid var(--core-border);
    border-radius: 6px;
    overflow: hidden;
  }
  .weight-picker button {
    flex: 1;
    border: none;
    background: var(--core-bg);
    color: var(--core-text-muted);
    padding: 6px 12px;
    font-size: var(--typo-subtitle-size);
    line-height: var(--typo-subtitle-line);
    letter-spacing: var(--typo-subtitle-tracking);
  }
  .weight-picker button[aria-pressed="true"] {
    background: var(--core-accent);
    color: var(--core-bg);
  }
  .settings-group input[type="range"] {
    width: 100%;
    accent-color: var(--core-accent);
    background: transparent;
    --range-percent: 50%;
  }
  input[type="range"]::-webkit-slider-runnable-track {
    -webkit-appearance: none;
    height: 6px;
    border-radius: 999px;
    background: linear-gradient(to right,
      var(--core-accent) var(--range-percent),
      var(--core-border-strong) var(--range-percent));
  }
  input[type="range"]::-moz-range-track {
    height: 6px;
    border-radius: 999px;
    background: var(--core-border-strong);
  }
  input[type="range"]::-moz-range-progress {
    height: 6px;
    border-radius: 999px;
    background: var(--core-accent);
  }
  input[type="range"]::-webkit-slider-thumb {
    -webkit-appearance: none;
    width: 16px;
    height: 16px;
    margin-top: -5px;
    border-radius: 50%;
    background: var(--core-accent);
    cursor: pointer;
    transition: transform var(--motion-fast) var(--motion-ease);
  }
  input[type="range"]::-moz-range-thumb {
    width: 16px;
    height: 16px;
    border: none;
    border-radius: 50%;
    background: var(--core-accent);
    cursor: pointer;
    transition: transform var(--motion-fast) var(--motion-ease);
  }
  input[type="range"]:hover::-webkit-slider-thumb,
  input[type="range"]:active::-webkit-slider-thumb { transform: scale(1.08); }
  input[type="range"]:hover::-moz-range-thumb,
  input[type="range"]:active::-moz-range-thumb { transform: scale(1.08); }
  input[type="range"]:focus-visible {
    outline: 2px solid var(--core-accent);
    outline-offset: 4px;
  }
  .color-swatch-control {
    display: flex;
    align-items: center;
    gap: 8px;
    background: var(--core-bg-raised);
    border-radius: 8px;
    padding: 4px;
  }
  .color-swatch-box {
    position: relative;
    width: 48px;
    height: 32px;
    border-radius: 6px;
    overflow: hidden;
    flex-shrink: 0;
    background: var(--icon-color, var(--slate-100));
    box-shadow: 0 0 0 0 var(--core-accent);
    transition: transform var(--motion-fast) var(--motion-ease),
      box-shadow var(--motion-fast) var(--motion-ease);
  }
  .color-swatch-box:focus-within {
    box-shadow: 0 0 0 2px var(--core-accent);
  }
  .color-swatch-box:active { transform: scale(0.96); }
  .color-swatch-box input[type="color"] {
    position: absolute;
    inset: 0;
    width: 100%;
    height: 100%;
    border: none;
    padding: 0;
    opacity: 0;
    cursor: pointer;
    outline: none;
  }
  .color-swatch-control .color-hex-value {
    margin-left: auto;
    padding-right: 6px;
    font-size: var(--typo-subtitle-size);
    line-height: var(--typo-subtitle-line);
    letter-spacing: var(--typo-subtitle-tracking);
    color: var(--core-text-muted);
    font-family: var(--font-family-mono);
  }
  .color-preset-row {
    display: flex;
    flex-wrap: wrap;
    gap: 11px;
    margin-top: 12px;
    margin-left: 4px;
  }
  .color-preset {
    width: 20px;
    height: 20px;
    border-radius: 50%;
    padding: 0;
    background: var(--preset-color);
    border: 1px solid rgba(0, 0, 0, 0.18);
    cursor: pointer;
    flex-shrink: 0;
    transition: transform var(--motion-fast) var(--motion-ease),
      box-shadow var(--motion-fast) var(--motion-ease);
  }
  [data-theme="dark"] .color-preset {
    border-color: rgba(255, 255, 255, 0.3);
  }
  .color-preset:hover { transform: scale(1.12); }
  .color-preset:active { transform: scale(0.96); }
  .color-preset:focus-visible {
    outline: 2px solid var(--core-accent);
    outline-offset: 2px;
  }
  .color-preset.is-selected {
    box-shadow: 0 0 0 2px var(--core-bg-raised), 0 0 0 4px var(--core-accent);
  }
  main.view { flex: 1; display: none; }
  main.view.active { display: block; }
  .results-meta {
    display: flex;
    align-items: baseline;
    justify-content: space-between;
    gap: 16px;
    padding: 4px 24px 4px;
  }
  #icon-count {
    font-size: var(--typo-subtitle-size);
    line-height: var(--typo-subtitle-line);
    letter-spacing: var(--typo-subtitle-tracking);
    color: var(--core-text-muted);
  }
  .last-updated {
    flex-shrink: 0;
    white-space: nowrap;
    font-size: var(--typo-base-size);
    line-height: var(--typo-base-line);
    letter-spacing: var(--typo-base-tracking);
    color: var(--slate-60);
    font-variant-numeric: proportional-nums;
  }
  .last-updated[hidden] { display: none; }
  .grid {
    display: grid;
    grid-template-columns: repeat(auto-fill, minmax(var(--tile-box, 72px), 1fr));
    gap: 12px;
    padding: 12px 18px 24px;
    color: var(--icon-color, var(--core-text));
    content-visibility: auto;
  }
  .icon-tile {
    position: relative;
    display: flex;
    align-items: center;
    justify-content: center;
    aspect-ratio: 1 / 1;
    background: var(--core-tile-fill);
    border: 1px solid var(--core-border);
    border-radius: 4px;
    padding: 10px;
    color: inherit;
  }
  .icon-tile:hover { border-color: var(--core-accent); }
  .icon-tile:focus-visible {
    outline: 2px solid var(--core-accent);
    outline-offset: 2px;
  }
  .icon-tile .icon-name {
    position: absolute;
    left: 4px;
    right: 4px;
    top: calc(50% + var(--tile-size, 32px) / 2 + 12px);
    overflow: hidden;
    text-overflow: ellipsis;
    white-space: nowrap;
    text-align: center;
    font-family: var(--font-family-base);
    font-size: var(--typo-caption-size);
    line-height: var(--typo-caption-line);
    letter-spacing: var(--typo-caption-tracking);
    font-weight: 500;
    color: var(--core-tile-label);
    pointer-events: none;
    opacity: 0;
    transform: translateY(-4px);
    transition: opacity var(--motion-fast) var(--motion-ease),
      transform var(--motion-fast) var(--motion-ease);
  }
  .icon-tile:hover .icon-name,
  .icon-tile:focus-visible .icon-name {
    opacity: 1;
    transform: translateY(0);
  }
  .icon-tile .icon-box {
    width: var(--tile-size, 32px);
    height: var(--tile-size, 32px);
    display: flex;
    align-items: center;
    justify-content: center;
  }
  .icon-tile .icon-box svg {
    display: block;
    width: auto;
    height: auto;
    max-width: 100%;
    max-height: 100%;
  }
  .icon-tile .deprecated-badge {
    position: absolute;
    top: 4px;
    right: 4px;
    font-size: var(--typo-caption-size);
    letter-spacing: var(--typo-caption-tracking);
    line-height: 1;
    font-weight: 700;
    padding: 3px 5px;
    border-radius: 4px;
    background: var(--core-negative-surface);
    color: var(--core-negative-text);
    border: 1px solid var(--core-negative-outline);
    pointer-events: none;
  }
  .empty-state {
    grid-column: 1 / -1;
    padding: 60px 20px;
    text-align: center;
    color: var(--core-text-muted);
    font-size: var(--typo-h4-size);
    line-height: var(--typo-h4-line);
    letter-spacing: var(--typo-h4-tracking);
  }
  dialog#detail-modal {
    position: fixed;
    border: 1px solid var(--core-border);
    border-radius: 18px;
    padding: 0;
    background: var(--core-bg);
    color: var(--core-text);
    width: min(680px, calc(100vw - 40px));
    max-height: calc(100vh - 80px);
    overflow: visible;
    opacity: 0;
    transform: scale(0.96) translateY(8px);
    transition: opacity var(--motion-base) var(--motion-ease),
      transform var(--motion-base) var(--motion-ease);
  }
  dialog#detail-modal.modal-visible {
    opacity: 1;
    transform: scale(1) translateY(0);
  }
  [data-theme="light"] dialog#detail-modal {
    background: var(--slate-0);
  }
  dialog#detail-modal::backdrop {
    background: var(--core-backdrop);
    opacity: 0;
    transition: opacity var(--motion-base) var(--motion-ease);
  }
  dialog#detail-modal.modal-visible::backdrop {
    opacity: 1;
  }
  .modal-inner {
    display: flex;
    align-items: flex-start;
    gap: 28px;
    padding: 36px;
  }
  .modal-body {
    flex: 1;
    min-width: 0;
    display: flex;
    flex-direction: column;
    gap: 18px;
  }
  .modal-header h2 {
    font-size: var(--typo-h1-size);
    line-height: var(--typo-h1-line);
    letter-spacing: var(--typo-h1-tracking);
    margin: 0 0 4px;
  }
  .modal-category {
    font-size: var(--typo-subtitle-size);
    line-height: var(--typo-subtitle-line);
    letter-spacing: var(--typo-subtitle-tracking);
    color: var(--core-text-muted);
  }
  button.modal-close {
    position: absolute;
    top: 16px;
    right: 16px;
    border: none;
    background: transparent;
    color: var(--core-text-muted);
    font-size: 20px;
    line-height: 1;
    padding: 4px;
    transition: color var(--motion-fast) var(--motion-ease),
      transform 100ms var(--motion-ease);
  }
  button.modal-close.closing {
    transform: scale(0.7);
  }
  .modal-preview {
    --preview-icon-size: 190px;
    --preview-grid-cell: calc(var(--preview-icon-size) / 24);
    position: relative;
    display: flex;
    align-items: center;
    justify-content: center;
    flex-shrink: 0;
    width: 214px;
    height: 214px;
    border: 1px solid var(--core-border);
    border-radius: 8px;
    color: var(--icon-color, var(--core-text));
    opacity: 0;
    transform: translateY(6px);
    transition: opacity var(--motion-base) var(--motion-ease),
      transform var(--motion-base) var(--motion-ease);
  }
  dialog#detail-modal.modal-visible .modal-preview {
    opacity: 1;
    transform: translateY(0);
  }
  .modal-preview::before {
    content: "";
    position: absolute;
    top: 50%;
    left: 50%;
    width: var(--preview-icon-size);
    height: var(--preview-icon-size);
    transform: translate(-50%, -50%);
  }
  [data-theme="light"] .modal-preview {
    background-color: var(--slate-0);
  }
  [data-theme="light"] .modal-preview::before {
    background-image:
      linear-gradient(to right, var(--slate-10) 0.5px, transparent 0.5px),
      linear-gradient(to bottom, var(--slate-10) 0.5px, transparent 0.5px);
    background-size: var(--preview-grid-cell) var(--preview-grid-cell);
  }
  [data-theme="dark"] .modal-preview {
    background-color: var(--slate);
  }
  [data-theme="dark"] .modal-preview::before {
    background-image:
      linear-gradient(to right, var(--slate-100) 0.5px, transparent 0.5px),
      linear-gradient(to bottom, var(--slate-100) 0.5px, transparent 0.5px);
    background-size: var(--preview-grid-cell) var(--preview-grid-cell);
  }
  .modal-preview svg {
    position: relative;
    width: var(--preview-icon-size);
    height: var(--preview-icon-size);
    display: block;
  }
  .modal-deprecated-notice {
    display: flex;
    align-items: center;
    gap: 8px;
    font-size: var(--typo-subtitle-size);
    line-height: var(--typo-subtitle-line);
    letter-spacing: var(--typo-subtitle-tracking);
    padding: 8px 10px;
    border-radius: 6px;
    background: var(--core-negative-surface);
    color: var(--core-negative-text);
    border: 1px solid var(--core-negative-outline);
  }
  .modal-deprecated-notice[hidden] { display: none; }
  .modal-tags {
    display: flex;
    flex-wrap: wrap;
    gap: 12px;
  }
  .modal-tags button {
    --tag-chip-growth: 14px;
    position: relative;
    border: none;
    background: transparent;
    color: var(--core-text);
    padding: 4px 10px;
    font-size: var(--typo-subtitle-size);
    line-height: var(--typo-subtitle-line);
    letter-spacing: var(--typo-subtitle-tracking);
  }
  .modal-tags button::before {
    content: "";
    position: absolute;
    inset: 0;
    border-radius: 999px;
    background: var(--core-chip-fill);
    transition: left var(--motion-fast) var(--motion-ease),
      right var(--motion-fast) var(--motion-ease),
      background-color var(--motion-fast) var(--motion-ease),
      outline-offset var(--motion-fast) var(--motion-ease);
  }
  .modal-tags button:hover::before,
  .modal-tags button:focus-visible::before {
    left: calc(var(--tag-chip-growth) / -2);
    right: calc(var(--tag-chip-growth) / -2);
    background: var(--core-chip-fill-hover);
  }
  .modal-tags button > span {
    position: relative;
    display: inline-block;
    transform: translateX(0);
    transition: transform var(--motion-fast) var(--motion-ease);
  }
  .modal-tags button:hover > span,
  .modal-tags button:focus-visible > span {
    transform: translateX(calc(var(--tag-chip-growth) / 2));
  }
  .modal-tags .tag-glyph {
    position: absolute;
    top: 50%;
    left: -4px;
    width: 12px;
    height: 12px;
    transform: translateY(-50%);
    opacity: 0;
    transition: opacity var(--motion-fast) var(--motion-ease),
      transform var(--motion-fast) var(--motion-ease);
  }
  .modal-tags button:hover .tag-glyph,
  .modal-tags button:focus-visible .tag-glyph {
    opacity: 1;
    transform: translateY(-50%) translateX(calc(var(--tag-chip-growth) / 2));
  }
  .modal-tags button:focus-visible { outline: none; }
  .modal-tags button:focus-visible::before {
    outline: 2px solid var(--core-accent);
    outline-offset: 2px;
  }
  .modal-actions {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 12px;
    margin-top: 4px;
    opacity: 0;
    transform: translateY(6px);
    transition: opacity var(--motion-base) var(--motion-ease),
      transform var(--motion-base) var(--motion-ease);
  }
  dialog#detail-modal.modal-visible .modal-actions {
    opacity: 1;
    transform: translateY(0);
    transition-delay: 60ms;
  }
  .modal-action {
    display: flex;
    flex-direction: row;
    align-items: center;
    justify-content: center;
    gap: 8px;
    border: 1px solid var(--core-border);
    background: var(--core-bg-raised);
    color: var(--core-text);
    border-radius: 4px;
    padding: 12px 8px;
    font-size: var(--typo-subtitle-size);
    line-height: var(--typo-subtitle-line);
    letter-spacing: var(--typo-subtitle-tracking);
    font-weight: 500;
    transition: background var(--motion-fast) var(--motion-ease),
      border-color var(--motion-fast) var(--motion-ease),
      color var(--motion-fast) var(--motion-ease);
  }
  .modal-action:hover { border-color: var(--core-accent); }
  .modal-action svg {
    width: 18px;
    height: 18px;
    flex-shrink: 0;
  }
  .modal-action .action-icon-success { display: none; }
  .modal-action.success .action-icon-default { display: none; }
  .modal-action.success .action-icon-success { display: block; }
  .modal-action.success {
    background: var(--core-positive-surface);
    border-color: var(--core-positive-outline);
    color: var(--core-positive-text);
  }
  .modal-action.error {
    background: var(--core-negative-surface);
    border-color: var(--core-negative-outline);
    color: var(--core-negative-text);
  }
  .guide-layout {
    display: flex;
    gap: 32px;
    padding: 24px 32px 40px;
    max-width: 900px;
    margin: 0 auto;
  }
  nav.guide-nav {
    display: flex;
    flex-direction: column;
    gap: 4px;
    min-width: 160px;
  }
  nav.guide-nav button {
    text-align: left;
    border: none;
    background: transparent;
    color: var(--core-text-muted);
    padding: 10px 12px;
    border-radius: 6px;
    font-size: var(--typo-subtitle-size);
    line-height: var(--typo-subtitle-line);
    letter-spacing: var(--typo-subtitle-tracking);
  }
  nav.guide-nav button[aria-selected="true"] {
    background: var(--core-bg-raised);
    color: var(--core-text);
    font-weight: 600;
  }
  .guide-content {
    flex: 1;
    font-size: var(--typo-h4-size);
    line-height: var(--typo-h4-line);
    letter-spacing: var(--typo-h4-tracking);
  }
  .guide-content h2 {
    font-size: var(--typo-h1-size);
    line-height: var(--typo-h1-line);
    letter-spacing: var(--typo-h1-tracking);
    margin-top: 0;
  }
  .guide-content h3 {
    font-size: var(--typo-h3-size);
    line-height: var(--typo-h3-line);
    letter-spacing: var(--typo-h3-tracking);
  }
  .guide-content code {
    background: var(--core-bg-raised);
    border: 1px solid var(--core-border);
    border-radius: 4px;
    padding: 1px 5px;
    font-size: var(--typo-subtitle-size);
    line-height: var(--typo-subtitle-line);
    letter-spacing: var(--typo-subtitle-tracking);
    font-family: var(--font-family-mono);
  }
  .guide-section { display: none; }
  .guide-section.active { display: block; }
  .changelog-entry {
    border-bottom: 1px solid var(--core-border);
    padding-bottom: 16px;
    margin-bottom: 16px;
  }
  .changelog-entry h3 { margin-bottom: 4px; }
  .changelog-date {
    display: block;
    color: var(--core-text-muted);
    font-size: var(--typo-subtitle-size);
    line-height: var(--typo-subtitle-line);
    letter-spacing: var(--typo-subtitle-tracking);
    margin-bottom: 8px;
  }
  .sr-only {
    position: absolute;
    width: 1px; height: 1px;
    padding: 0; margin: -1px;
    overflow: hidden;
    clip: rect(0,0,0,0);
    white-space: nowrap;
    border: 0;
  }