/* ═══════════════════════════════════════════════════════════
   Core AI Catalog — Design System v5
   ═══════════════════════════════════════════════════════════ */

/* ── Tokens ── */
:root {
  --bg: #08080a;
  --bg-elevated: #121215;
  --bg-card: #16161b;
  --bg-input: #0d0d10;
  --bg-code: #0b0b0e;
  --border: #22222a;
  --border-strong: #333340;
  --text: #e6e6eb;
  --text-2: #8e8e98;
  --text-3: #555560;
  --accent: #5b7ffb;
  --accent-2: rgba(91,127,251,.08);
  --accent-3: rgba(91,127,251,.15);
  --accent-glow: rgba(91,127,251,.10);
  --accent-glow-2: rgba(168,85,247,.06);
  --green: #28d094;
  --green-bg: rgba(40,208,148,.08);
  --yellow: #eab308;
  --yellow-bg: rgba(234,179,8,.08);
  --red: #ef5050;
  --red-bg: rgba(239,80,80,.08);
  /* Capability chip hues — one per output-modality family, chosen from the
     Okabe-Ito colorblind-safe palette so hue alone is never the only signal
     (the label text always carries the real meaning). */
  --hue-image: #f59e0b;
  --hue-spatial: #56b4e9;
  --hue-audio: #d55e00;
  --hue-action: #cc79a7;
  --shadow: 0 1px 2px rgba(0,0,0,.3), 0 4px 16px -4px rgba(0,0,0,.35);
  --shadow-md: 0 8px 24px -6px rgba(0,0,0,.45), 0 2px 6px -2px rgba(0,0,0,.3);
  --shadow-lg: 0 24px 64px -12px rgba(0,0,0,.55), 0 4px 12px -2px rgba(0,0,0,.35);
  --r-sm: 8px;
  --r: 12px;
  --r-lg: 16px;
  --r-xl: 20px;
  --font: -apple-system, BlinkMacSystemFont, "SF Pro Text", "Segoe UI", system-ui, sans-serif;
  --mono: "SF Mono", "JetBrains Mono", "Fira Code", monospace;
  --t: .15s cubic-bezier(.4,0,.2,1);
  --touch: 44px;
  /* 4px spacing scale — use these instead of ad hoc rem values */
  --sp-1: .25rem;   /* 4px  */
  --sp-2: .5rem;    /* 8px  */
  --sp-3: .75rem;   /* 12px */
  --sp-4: 1rem;     /* 16px */
  --sp-5: 1.5rem;   /* 24px */
  --sp-6: 2rem;     /* 32px */
  --sp-7: 3rem;     /* 48px */
  --sp-8: 4rem;     /* 64px */
}

[data-theme="light"] {
  --bg: #fafafc;
  --bg-elevated: #ffffff;
  --bg-card: #ffffff;
  --bg-input: #f4f4f7;
  --bg-code: #f6f6f9;
  --border: #e0e0e6;
  --border-strong: #cccfd8;
  --text: #17171c;
  --text-2: #494953;
  --text-3: #7c7c87;
  --accent: #2b50db;
  --accent-2: rgba(43,80,219,.05);
  --accent-3: rgba(43,80,219,.1);
  --accent-glow: rgba(43,80,219,.05);
  --accent-glow-2: rgba(168,85,247,.035);
  --green: #059669;
  --green-bg: rgba(5,150,105,.06);
  --yellow: #b45309;
  --yellow-bg: rgba(180,83,9,.06);
  --red: #c8302f;
  --red-bg: rgba(200,48,47,.05);
  --hue-image: #92400e;
  --hue-spatial: #0c6b96;
  --hue-audio: #9a3f00;
  --hue-action: #8a4a6b;
  --shadow: 0 1px 2px rgba(20,20,40,.04), 0 2px 8px -2px rgba(20,20,40,.06);
  --shadow-md: 0 4px 16px -4px rgba(20,20,40,.1), 0 1px 3px rgba(20,20,40,.05);
  --shadow-lg: 0 20px 48px -12px rgba(20,20,40,.14), 0 2px 8px rgba(20,20,40,.06);
}

*, *::before, *::after { margin:0; padding:0; box-sizing:border-box; }
html { scroll-behavior: smooth; }

/* ═══ FOCUS (site-wide, keyboard-only) ═══ */
:focus { outline: none; }
:focus-visible {
  outline: 2px solid var(--accent);
  outline-offset: 2px;
  border-radius: 4px;
}
button, [role="button"], [tabindex] { -webkit-tap-highlight-color: transparent; }

body {
  font-family: var(--font);
  background:
    radial-gradient(1100px 620px at 12% -8%, var(--accent-glow), transparent 62%),
    radial-gradient(900px 500px at 100% 15%, var(--accent-glow-2), transparent 55%),
    var(--bg);
  background-attachment: fixed;
  color: var(--text);
  line-height: 1.5;
  -webkit-font-smoothing: antialiased;
  -moz-osx-font-smoothing: grayscale;
  min-height: 100vh;
  display: flex;
  flex-direction: column;
}

::selection { background: var(--accent-3); }
::-webkit-scrollbar { width: 6px; height: 6px; }
::-webkit-scrollbar-track { background: transparent; }
::-webkit-scrollbar-thumb { background: var(--border-strong); border-radius: 3px; }

/* ═══ HEADER ═══ */
header {
  position: sticky; top: 0; z-index: 50;
  background: color-mix(in srgb, var(--bg) 78%, transparent);
  backdrop-filter: saturate(180%) blur(20px);
  -webkit-backdrop-filter: saturate(180%) blur(20px);
  border-bottom: 1px solid var(--border);
}
.header-inner {
  max-width: 1200px; margin: 0 auto;
  padding: var(--sp-3) var(--sp-5);
  display: flex; align-items: center; gap: var(--sp-3);
}
.header-brand { display: flex; align-items: center; gap: var(--sp-3); min-width: 0; flex: 1 1 auto; overflow: hidden; }
.header-logo {
  width: 34px; height: 34px; flex-shrink: 0; border-radius: var(--r-sm);
  background: linear-gradient(155deg, var(--accent-3), transparent 70%), var(--bg-card);
  border: 1px solid var(--border);
  box-shadow: inset 0 1px 0 rgba(255,255,255,.05);
  display: flex; align-items: center; justify-content: center;
  color: var(--accent);
}
.header-logo svg { width: 19px; height: 19px; }
.header-text { display: flex; flex-direction: column; gap: 1px; min-width: 0; }
.header-text h1 { font-size: 1.05rem; font-weight: 700; letter-spacing: -.015em; line-height: 1.15; white-space: nowrap; }
.header-tagline { font-size: .72rem; color: var(--text-2); line-height: 1.2; white-space: nowrap; overflow: hidden; text-overflow: ellipsis; display: block; }
.header-actions { display: flex; align-items: center; gap: var(--sp-2); margin-left: auto; flex-shrink: 0; }
.header-badge img { height: 17px; border-radius: 3px; display: block; }
.header-badge { display: flex; }

.icon-btn {
  background: var(--bg-card); border: 1px solid var(--border); border-radius: var(--r-sm);
  width: var(--touch); height: var(--touch);
  display: flex; align-items: center; justify-content: center;
  cursor: pointer; color: var(--text-2);
  transition: var(--t); text-decoration: none;
}
.icon-btn:hover { border-color: var(--accent); color: var(--accent); box-shadow: var(--shadow); transform: translateY(-1px); }

.icon-sun { display: none; }
[data-theme="light"] .icon-moon { display: none; }
[data-theme="light"] .icon-sun { display: block; }

/* ═══ TABS ═══ */
nav#tabs {
  max-width: 1200px; margin: 0 auto; width: 100%;
  padding: 0 var(--sp-5); display: flex; gap: var(--sp-1);
  border-bottom: 1px solid var(--border);
}
.tab {
  background: none; border: none; color: var(--text-3);
  padding: var(--sp-3) var(--sp-4); cursor: pointer;
  font-size: .85rem; font-weight: 500; font-family: var(--font);
  border-bottom: 2px solid transparent;
  transition: color var(--t), border-color var(--t);
  position: relative; top: 1px;
  min-height: var(--touch);
}
.tab:hover { color: var(--text-2); }
.tab.active { color: var(--accent); border-bottom-color: var(--accent); }

/* ═══ LAYOUT ═══ */
.tab-content {
  display: none; flex: 1;
  max-width: 1200px; margin: 0 auto; width: 100%;
  padding: var(--sp-6) var(--sp-5);
}
.tab-content.active { display: flex; gap: var(--sp-6); }
#tasks.active, #about.active { display: block; max-width: 820px; }

/* ═══ FILTERS ═══ */
#filters {
  width: 224px; flex-shrink: 0;
  display: flex; flex-direction: column; gap: var(--sp-5);
  position: sticky; top: calc(90px + var(--sp-4)); align-self: flex-start;
  max-height: calc(100vh - 100px - var(--sp-4)); overflow-y: auto;
}
.filter-group { display: flex; flex-direction: column; gap: var(--sp-2); }
.filter-group > label {
  font-weight: 600; font-size: .68rem; text-transform: uppercase;
  letter-spacing: .06em; color: var(--text-3);
}
input[type="text"], select {
  width: 100%; padding: .5rem var(--sp-3); min-height: 38px;
  background: var(--bg-input); border: 1px solid var(--border); border-radius: var(--r-sm);
  color: var(--text); font-size: .82rem; font-family: var(--font);
  transition: var(--t);
}
input:focus, select:focus { border-color: var(--accent); }
input::placeholder { color: var(--text-3); }
select {
  appearance: none; -webkit-appearance: none;
  background-image: url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' width='10' height='10' viewBox='0 0 12 12'%3E%3Cpath fill='%23555560' d='M6 8.5L2 4.5h8z'/%3E%3C/svg%3E");
  background-repeat: no-repeat; background-position: right var(--sp-2) center;
  padding-right: var(--sp-6);
}

/* Segmented buttons (device filter) */
.seg-group { display: flex; gap: var(--sp-1); }
.seg {
  flex: 1; min-width: 58px; padding: .5rem .6rem; min-height: 38px;
  background: var(--bg-input); border: 1px solid var(--border); border-radius: var(--r-sm);
  color: var(--text-3); font-size: .72rem; font-weight: 600; font-family: var(--font);
  cursor: pointer; transition: var(--t);
}
.seg.active { background: var(--accent-2); border-color: var(--accent); color: var(--accent); box-shadow: inset 0 0 0 1px var(--accent); }
.seg:not(.active):hover { color: var(--text-2); border-color: var(--border-strong); }
.seg-count { display: block; font-size: .6rem; font-weight: 500; opacity: .7; margin-top: 1px; font-variant-numeric: tabular-nums; }
.seg.seg-empty { opacity: .45; }

/* Generic "has an active value, dims what wouldn't match" treatment — same
   language as the IO bar's pinned state, applied to every plain filter select. */
.filter-group select.has-value {
  background: var(--accent-3); border-color: var(--accent); color: var(--accent); font-weight: 600;
}

.btn-link {
  background: none; border: none; color: var(--text-3);
  font-size: .78rem; font-weight: 500; font-family: var(--font); cursor: pointer;
  padding: 0; transition: color var(--t);
}
.btn-link:hover { color: var(--accent); }

/* Progressive disclosure — License/Source are secondary filters, collapsed by default */
.filter-more summary {
  display: flex; align-items: center; gap: var(--sp-1); cursor: pointer;
  font-weight: 600; font-size: .74rem; color: var(--text-2); list-style: none;
  transition: color var(--t);
}
.filter-more summary::-webkit-details-marker { display: none; }
.filter-more summary:hover { color: var(--accent); }
.filter-more-chevron { width: 12px; height: 12px; transition: transform var(--t); flex-shrink: 0; }
.filter-more[open] .filter-more-chevron { transform: rotate(180deg); }
.filter-more[open] .filter-more-body { display: flex; flex-direction: column; gap: var(--sp-4); margin-top: var(--sp-4); }

/* More filters + Reset share one row — More filters left, Reset right.
   Reset is pinned via absolute position (not flex sharing) so .filter-more
   keeps the full row width for its own label AND its open body — License/Source
   get the whole sidebar width instead of splitting it with the Reset button. */
.filters-more-row {
  position: relative;
  border-top: 1px solid var(--border); padding-top: var(--sp-4);
}
.filters-more-row #reset-filters { position: absolute; top: var(--sp-4); right: 0; }

/* ═══ IO BAR (primary Input → Output filter) ═══
   Real <select> elements stay the actual control (native keyboard + screen-reader
   support); the "pinned" look is a color/weight shift plus a real, separately
   focusable clear button — not a custom listbox proxy. Fields align on their
   bottom edge (align-items: flex-end) so label height never affects the row's
   vertical alignment with the connecting arrow. */
.io-bar {
  display: flex; align-items: flex-end; gap: var(--sp-4);
  background:
    linear-gradient(155deg, var(--accent-2), transparent 60%),
    var(--bg-card);
  border: 1px solid var(--border); border-radius: var(--r-xl);
  padding: var(--sp-4); margin-bottom: 0;
  box-shadow: var(--shadow), inset 0 1px 0 rgba(255,255,255,.04);
}
#filters .io-bar { flex-direction: column; align-items: stretch; }
#filters .io-bar .io-field { width: 100%; }
.io-field { flex: 1; display: flex; flex-direction: column; min-width: 0; gap: var(--sp-2); }
.io-field .io-label {
  font-weight: 600; font-size: .66rem; text-transform: uppercase;
  letter-spacing: .06em; color: var(--text-3);
}
.io-row { height: var(--touch); position: relative; }
.io-select-native {
  width: 100%; height: 100%; box-sizing: border-box; border-radius: var(--r-sm);
  font-size: .84rem; font-weight: 500; font-family: var(--font); cursor: pointer;
  background: var(--bg-input); border: 1px solid var(--border); color: var(--text-2);
  padding: 0 var(--sp-6) 0 var(--sp-3); transition: var(--t);
  text-overflow: ellipsis; overflow: hidden; white-space: nowrap;
}
.io-row .io-select-native { min-height: 0; }
.io-select-native:hover { border-color: var(--border-strong); }
.io-select-native.has-value {
  background: var(--accent-3); border-color: var(--accent); color: var(--accent); font-weight: 600;
}
.io-x {
  position: absolute; top: 50%; right: 7px; transform: translateY(-50%);
  width: 28px; height: 28px; border-radius: 8px; display: none; align-items: center; justify-content: center;
  color: var(--accent); background: none; border: none; cursor: pointer; pointer-events: none;
}
.io-row.has-value .io-x { display: flex; pointer-events: auto; }
.io-row.has-value .io-select-native { padding-right: 2.4rem; }
.io-x:hover { background: var(--accent-2); }
.io-x svg { width: 11px; height: 11px; }

.io-arrow-wrap { display: flex; align-items: center; justify-content: center; height: var(--touch); flex-shrink: 0; }
#filters .io-arrow-wrap { display: none; }
.io-arrow {
  width: 32px; height: 32px; border-radius: 50%; background: var(--accent-2); color: var(--accent);
  display: flex; align-items: center; justify-content: center; flex-shrink: 0;
}
.io-arrow svg { width: 14px; height: 14px; }

/* ═══ GRID AREA ═══ */
#grid-area { flex: 1; display: flex; flex-direction: column; gap: .6rem; }
.hero-headline { font-size: 1.75rem; font-weight: 750; letter-spacing: -.025em; margin-bottom: var(--sp-1); }
.hero-sub { font-size: .92rem; color: var(--text-2); margin-bottom: var(--sp-5); max-width: 60ch; }
#grid-header { display: flex; align-items: center; gap: var(--sp-2); flex-wrap: wrap; margin-bottom: var(--sp-1); }
.result-count { font-size: .78rem; color: var(--text-3); }
.freshness-badge { font-size: .7rem; color: var(--text-3); margin-left: auto; }
.active-filters { display: flex; gap: var(--sp-1); flex-wrap: wrap; }
.sort-control { display: flex; align-items: center; gap: var(--sp-2); margin-left: auto; }
.sort-control label {
  font-weight: 600; font-size: .68rem; text-transform: uppercase;
  letter-spacing: .06em; color: var(--text-3); white-space: nowrap;
}
.sort-control select {
  min-height: 32px; padding: .3rem var(--sp-6) .3rem var(--sp-2);
  font-size: .78rem; width: auto;
}
#grid-header .freshness-badge { margin-left: var(--sp-4); }
.filter-pill {
  font-size: .68rem; font-weight: 600; font-family: var(--font);
  background: var(--accent-2); color: var(--accent); border: 1px solid transparent;
  padding: .22rem .55rem; border-radius: 20px; cursor: pointer;
  transition: var(--t);
}
.filter-pill:hover { background: var(--accent-3); border-color: var(--accent); }

#model-grid {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(292px, 1fr));
  gap: var(--sp-4);
}

/* Skeleton */
.skeleton-card {
  border: 1px solid var(--border); border-radius: var(--r);
  height: 128px; background: var(--bg-card);
  background-image: linear-gradient(90deg, var(--bg-card) 25%, var(--bg-elevated) 50%, var(--bg-card) 75%);
  background-size: 200% 100%; animation: shimmer 1.5s infinite;
}
@keyframes shimmer { 0% { background-position: -200% 0; } 100% { background-position: 200% 0; } }

/* ═══ CARD ═══ */
.model-card {
  background: var(--bg-card); border: 1px solid var(--border); border-radius: var(--r);
  padding: var(--sp-4); cursor: pointer;
  box-shadow: var(--shadow);
  transition: border-color var(--t), background var(--t), box-shadow var(--t), transform var(--t);
  animation: cardIn .3s cubic-bezier(.2,.6,.3,1) both;
  display: flex; flex-direction: column; gap: var(--sp-3);
}
@keyframes cardIn { from { opacity: 0; transform: translateY(6px); } to { opacity: 1; transform: translateY(0); } }
.model-card:hover, .model-card:focus-visible {
  border-color: var(--border-strong); background: var(--bg-elevated);
  box-shadow: var(--shadow-md); transform: translateY(-2px);
}
.model-card:focus-visible { outline-offset: -1px; }

.card-top { display: flex; justify-content: space-between; align-items: flex-start; gap: var(--sp-2); }
.card-name {
  font-size: .88rem; font-weight: 650; letter-spacing: -.008em; line-height: 1.3;
  overflow: hidden;
  display: -webkit-box; -webkit-box-orient: vertical; -webkit-line-clamp: 2;
  line-clamp: 2;
  flex: 1; min-width: 0;
}
.card-score {
  /* reset native <button> chrome — this badge doubles as a button for keyboard access */
  appearance: none; -webkit-appearance: none; border: none; outline: none;
  font-family: var(--font); line-height: 1;
  font-size: .7rem; font-weight: 700; font-variant-numeric: tabular-nums;
  white-space: nowrap; padding: .3rem .55rem; border-radius: 20px; flex-shrink: 0;
}
.score-a { background: var(--green-bg); color: var(--green); }
.score-b { background: var(--accent-2); color: var(--accent); }
.score-c { background: var(--yellow-bg); color: var(--yellow); }
.score-d, .score-f { background: var(--red-bg); color: var(--red); }

/* Plain inline line, no box — the capability chip above already carries the
   visual weight; this is just supporting detail. */
.card-io {
  display: flex; align-items: baseline; flex-wrap: wrap; gap: .3rem;
  font-size: .74rem; color: var(--text-2);
}
.card-io-label {
  font-size: .62rem; font-weight: 700; text-transform: uppercase; letter-spacing: .05em; color: var(--text-3);
}
.card-io-value { color: var(--text-2); font-weight: 500; }
.card-io-arrow { color: var(--text-3); flex-shrink: 0; display: inline-flex; align-items: center; margin: 0 .1rem; }
.card-io-arrow svg { width: 10px; height: 10px; }

.card-caps { display: flex; flex-wrap: wrap; gap: var(--sp-1); }
.chip {
  padding: .18rem .5rem; border-radius: 6px;
  font-size: .66rem; font-weight: 550;
  background: var(--bg-input); color: var(--text-2);
}
/* Capability color coding — grouped by OUTPUT modality, not by capability name.
   Two capabilities that both produce images always share the same hue; what
   changes between them is lightness only (a "strong / bright / soft" tier of
   the same color), never a different color. Hues come from the Okabe-Ito
   colorblind-safe set, and every chip still carries its text label — color is
   a reinforcing cue, never the only one.

   Text output (blue = --accent) */
.chip-cap-chat, .chip-cap-text-generation, .chip-cap-instruction-following {
  background: color-mix(in srgb, var(--accent) 12%, transparent); color: var(--accent);
}
.chip-cap-reasoning, .chip-cap-agentic {
  background: color-mix(in srgb, var(--accent) 16%, transparent);
  color: color-mix(in srgb, var(--accent) 85%, white);
}
.chip-cap-audio-understanding, .chip-cap-speech-to-text, .chip-cap-document-ocr,
.chip-cap-diffusion-lm, .chip-cap-hybrid-llm, .chip-cap-mla, .chip-cap-moe, .chip-cap-speculative-decoding {
  background: color-mix(in srgb, var(--accent) 8%, transparent);
  color: color-mix(in srgb, var(--accent) 70%, var(--text-2));
}

/* Vector / score output (bluish-green = --green) */
.chip-cap-embedding {
  background: color-mix(in srgb, var(--green) 12%, transparent); color: var(--green);
}
.chip-cap-image-text-similarity, .chip-cap-visual-document-retrieval {
  background: color-mix(in srgb, var(--green) 16%, transparent);
  color: color-mix(in srgb, var(--green) 85%, white);
}
.chip-cap-reranking {
  background: color-mix(in srgb, var(--green) 8%, transparent);
  color: color-mix(in srgb, var(--green) 70%, var(--text-2));
}

/* Image output (amber) */
.chip-cap-image-generation {
  background: color-mix(in srgb, var(--hue-image) 12%, transparent); color: var(--hue-image);
}
.chip-cap-super-resolution {
  background: color-mix(in srgb, var(--hue-image) 8%, transparent);
  color: color-mix(in srgb, var(--hue-image) 70%, var(--text-2));
}

/* Spatial / geometric output — boxes, masks, coordinates, depth, 3D (sky blue) */
.chip-cap-object-detection {
  background: color-mix(in srgb, var(--hue-spatial) 12%, transparent); color: var(--hue-spatial);
}
.chip-cap-instance-segmentation, .chip-cap-promptable-segmentation, .chip-cap-vision-language {
  background: color-mix(in srgb, var(--hue-spatial) 16%, transparent);
  color: color-mix(in srgb, var(--hue-spatial) 85%, white);
}
.chip-cap-gui-grounding, .chip-cap-monocular-depth, .chip-cap-image-to-3d {
  background: color-mix(in srgb, var(--hue-spatial) 8%, transparent);
  color: color-mix(in srgb, var(--hue-spatial) 70%, var(--text-2));
}

/* Audio output (vermillion) */
.chip-cap-music-generation {
  background: color-mix(in srgb, var(--hue-audio) 12%, transparent); color: var(--hue-audio);
}
.chip-cap-text-to-speech {
  background: color-mix(in srgb, var(--hue-audio) 16%, transparent);
  color: color-mix(in srgb, var(--hue-audio) 85%, white);
}
.chip-cap-text-to-audio {
  background: color-mix(in srgb, var(--hue-audio) 8%, transparent);
  color: color-mix(in srgb, var(--hue-audio) 70%, var(--text-2));
}

/* Action / video / temporal output (reddish purple) */
.chip-cap-robotics {
  background: color-mix(in srgb, var(--hue-action) 12%, transparent); color: var(--hue-action);
}
.chip-cap-vision-language-action {
  background: color-mix(in srgb, var(--hue-action) 16%, transparent);
  color: color-mix(in srgb, var(--hue-action) 85%, white);
}
.chip-cap-video-classification, .chip-cap-text-to-video {
  background: color-mix(in srgb, var(--hue-action) 8%, transparent);
  color: color-mix(in srgb, var(--hue-action) 70%, var(--text-2));
}

.card-bottom {
  display: flex; justify-content: space-between; align-items: center;
  font-size: .7rem; color: var(--text-3);
  padding-top: var(--sp-3); margin-top: auto;
  border-top: 1px solid var(--border);
}
.card-meta { display: flex; align-items: center; gap: var(--sp-2); }
.card-license { font-weight: 600; }
.lic-ok { color: var(--green); }
.lic-warn { color: var(--yellow); }
.card-bench {
  font-size: .64rem; background: var(--bg-input); padding: .12rem .4rem; border-radius: 5px;
}

/* ═══ TASKS ═══ */
#task-list {
  max-width: 820px; display: grid;
  grid-template-columns: repeat(auto-fill, minmax(340px, 1fr)); gap: var(--sp-3);
}
/* Clicking a task group jumps to Explore filtered by that capability. */
.task-section {
  /* Explicit flex-column + flex-start: cards in the same grid row are
     stretched to equal height (some rows have 1 synonym, others have 7+),
     so content must be pinned to the top instead of drifting toward the
     middle of the extra space. */
  display: flex; flex-direction: column; align-items: stretch; justify-content: flex-start;
  width: 100%; text-align: left; cursor: pointer;
  background: var(--bg-card); border: 1px solid var(--border); border-radius: var(--r);
  padding: var(--sp-3) var(--sp-4); font-family: var(--font); box-shadow: var(--shadow);
  transition: var(--t);
}
.task-section:hover, .task-section:focus-visible {
  border-color: var(--border-strong); box-shadow: var(--shadow-md); transform: translateY(-2px);
}
.task-section-head { display: flex; align-items: center; justify-content: space-between; gap: var(--sp-2); margin-bottom: var(--sp-2); }
.task-cap-chip { font-size: .74rem; padding: .22rem .55rem; }
.task-count { font-size: .68rem; color: var(--text-3); font-weight: 500; white-space: nowrap; }
.task-synonyms { display: flex; flex-wrap: wrap; gap: .2rem; }

/* ═══ ABOUT ═══ */
.about-content { max-width: 820px; line-height: 1.6; }
.about-content h2 { font-size: 1.6rem; font-weight: 700; letter-spacing: -.02em; margin-bottom: var(--sp-1); }
.about-content .lede { color: var(--text-2); margin-bottom: var(--sp-5); font-size: .92rem; }
.about-content h3 { font-size: 1rem; margin: var(--sp-6) 0 var(--sp-2); font-weight: 650; }
.about-content p { margin-bottom: var(--sp-2); font-size: .86rem; }
.about-content a { color: var(--accent); text-decoration: none; }
.about-content a:hover { text-decoration: underline; }
.about-content code { font-family: var(--mono); font-size: .78rem; background: var(--bg-input); padding: .05rem .25rem; border-radius: 3px; }

/* ═══ SCORES (Leaderboard) ═══ */
#scores.active { display: block; }
#scores .about-content { max-width: none; }
#scores .lede { max-width: 60ch; }
#scores .io-bar { margin-bottom: var(--sp-4); }
/* Search, Capability, Device — three equal columns on one row. */
.lb-filter-bar {
  display: grid; grid-template-columns: repeat(3, minmax(0, 1fr)); gap: var(--sp-4); margin-bottom: var(--sp-3);
}
.lb-filter-group { display: flex; flex-direction: column; gap: var(--sp-2); justify-content: center; min-width: 0; }
/* Opening "More filters" grows inline, pushing the table down — no float/overlay.
   .filter-more isn't justify-self:start here (it stretches to its full grid
   column) so License/Source have real width to sit side by side in. */
.filter-more[open] .lb-filter-more-body { flex-direction: row; flex-wrap: wrap; gap: var(--sp-4); }
.lb-filter-more-body .lb-filter-group { flex: 1 1 180px; }
.lb-filter-group label {
  font-weight: 600; font-size: .66rem; text-transform: uppercase;
  letter-spacing: .06em; color: var(--text-3);
}
.lb-filter-group select {
  width: 100%; padding: .45rem var(--sp-3); background: var(--bg-input); border: 1px solid var(--border);
  border-radius: var(--r-sm); color: var(--text); font-size: .8rem; font-family: var(--font);
  min-width: 100px; min-height: 38px; transition: var(--t);
}
.lb-filter-group select:focus { outline: none; border-color: var(--accent); }
.lb-search-wrap input { width: 100%; max-width: none; }
/* More filters / result count / Reset — More filters left, count centered,
   Reset right, one row. .filter-more spans the full row (grid-column:1/-1)
   so License/Source get the whole row's width, not just one grid track —
   count/Reset are pinned via absolute position (not grid cells) so they don't
   take space away from it or get dragged around when the panel opens. */
.lb-filter-meta {
  display: grid; grid-template-columns: repeat(3, minmax(0, 1fr));
  gap: var(--sp-4); margin-bottom: var(--sp-4);
  position: relative;
}
.lb-filter-meta .filter-more { grid-column: 1 / -1; }
.lb-filter-meta #lb-count { position: absolute; left: 50%; top: 0; transform: translateX(-50%); }
.lb-filter-meta #lb-reset { position: absolute; right: 0; top: 0; }
.lb-table-wrap { border: 1px solid var(--border); border-radius: var(--r-lg); overflow: hidden; overflow-x: auto; box-shadow: var(--shadow); }
.lb-table { width: 100%; border-collapse: collapse; font-size: .82rem; min-width: 640px; }
.lb-table thead { background: var(--bg-elevated); border-bottom: 1px solid var(--border); }
.lb-table th {
  text-align: left; padding: var(--sp-3) var(--sp-4); font-size: .66rem; font-weight: 700;
  text-transform: uppercase; letter-spacing: .06em; color: var(--text-3);
  white-space: nowrap; user-select: none;
}
.lb-table th.sortable { cursor: pointer; transition: color var(--t); }
.lb-table th.sortable:hover { color: var(--accent); }
.lb-table th.sortable .sort-arrow { font-size: .7rem; margin-left: .2rem; opacity: .5; }
.lb-table th.sort-asc .sort-arrow::after { content: '\25B2'; opacity: 1; color: var(--accent); }
.lb-table th.sort-desc .sort-arrow::after { content: '\25BC'; opacity: 1; color: var(--accent); }
.lb-table td { padding: var(--sp-3) var(--sp-4); border-bottom: 1px solid var(--border); vertical-align: middle; }
.lb-table tbody tr { transition: background var(--t); cursor: pointer; }
.lb-table tbody tr:hover, .lb-table tbody tr:focus-visible { background: var(--bg-elevated); }
.lb-table tbody tr:focus-visible { outline-offset: -2px; }
.lb-table tbody tr:last-child td { border-bottom: none; }
.lb-rank { width: 40px; color: var(--text-3); font-variant-numeric: tabular-nums; text-align: center; }
.lb-model { font-weight: 650; }
.lb-cap { max-width: 320px; }
.lb-cap .chip { margin: 1px 3px 1px 0; }
.lb-score { width: 84px; }
.lb-score .card-score { display: inline-block; }
.lb-empty { text-align: center; padding: var(--sp-7) var(--sp-4); color: var(--text-3); font-size: .85rem; }
.lb-empty .btn-retry { margin-top: var(--sp-3); }

/* ═══ CONTRIBUTE ═══ */
#contribute.active { display: block; }
#contribute .about-content { max-width: none; }
#contribute .lede { max-width: 70ch; }

/* ═══ SKILLS ═══ */
#skills.active { display: block; }
#skills .about-content { max-width: none; }
#skills .lede { max-width: 68ch; }

.skills-entry {
  display: grid; grid-template-columns: repeat(2, minmax(0, 1fr)); gap: var(--sp-4);
  margin: var(--sp-5) 0 var(--sp-6);
}
.skills-entry-card {
  background: var(--bg-card); border: 1px solid var(--border); border-radius: var(--r);
  padding: var(--sp-4); box-shadow: var(--shadow);
}
.skills-entry-card h4 { font-size: .78rem; font-weight: 700; text-transform: uppercase; letter-spacing: .06em; color: var(--accent); margin-bottom: var(--sp-1); }
.skills-entry-card > p { font-size: .8rem; color: var(--text-2); margin-bottom: var(--sp-3); }
.skills-entry-card .code-block { margin: 0; }

.skills-list { display: flex; flex-direction: column; }
/* Invisible card — same padding as .skills-entry-card above, just without
   the visible border/background, so the nested code-blocks read at the
   same size/inset as the ones in the real cards above. */
.skill-card {
  padding: var(--sp-5) var(--sp-4);
}
.skill-card:last-child { padding-bottom: 0; }
/* Number sits above the title as a small badge + rule, not beside it — so
   title, description, code columns and link all share one left edge. */
.skill-card-head { display: flex; align-items: center; gap: var(--sp-3); margin-bottom: var(--sp-2); }
.skill-num {
  flex-shrink: 0; width: 26px; height: 26px; border-radius: 50%;
  background: var(--accent-3); color: var(--accent); font-weight: 700; font-size: .72rem;
  display: flex; align-items: center; justify-content: center;
  font-variant-numeric: tabular-nums;
}
.skill-head-rule { flex: 1; height: 1px; background: var(--border); }
.skill-body { min-width: 0; margin-bottom: var(--sp-3); }
.skill-body h3 { font-size: 1rem; font-weight: 700; margin-bottom: var(--sp-1); }
.skill-body > p { font-size: .86rem; color: var(--text-2); margin-bottom: 0; max-width: 62ch; }
/* Same two-column shape as the MCP/CLI cards above — MCP left, CLI right, every time. */
.skill-columns {
  display: grid; grid-template-columns: repeat(2, minmax(0, 1fr)); gap: var(--sp-4);
  margin-bottom: var(--sp-3);
}
.skill-col .code-block { margin: 0; height: 100%; }
.skill-col .code-block pre { height: calc(100% - 29px); }
.skill-link { font-size: .8rem; margin-top: 0; }
.skill-link a { color: var(--accent); text-decoration: none; }
.skill-link a:hover { text-decoration: underline; }
.skill-jump {
  background: var(--accent-2); color: var(--accent); border: 1px solid transparent;
  border-radius: var(--r-sm); padding: .5rem var(--sp-3); font-size: .82rem; font-weight: 600;
  font-family: var(--font); cursor: pointer; transition: var(--t);
}
.skill-jump:hover { background: var(--accent-3); }

@keyframes jumpHighlight {
  0%, 100% { box-shadow: var(--shadow); border-color: var(--border); }
  30% { box-shadow: 0 0 0 3px var(--accent-3), var(--shadow-md); border-color: var(--accent); }
}
.jump-highlight { animation: jumpHighlight 1.6s ease; }
.contribute-grid {
  display: grid; grid-template-columns: repeat(2, minmax(0, 1fr)); gap: var(--sp-4); margin: var(--sp-3) 0 var(--sp-5);
}
/* A/B decision banner: does the .aimodel artifact already exist? */
.contribute-decision {
  border: 1px solid var(--border); border-radius: var(--r-lg); padding: var(--sp-4);
  background: var(--bg-card); box-shadow: var(--shadow); margin: var(--sp-4) 0 var(--sp-3);
}
.contribute-decision-q { font-size: .92rem; font-weight: 650; margin-bottom: var(--sp-3); }
.contribute-decision-q code { font-family: var(--mono); background: var(--bg-input); padding: .05rem .3rem; border-radius: 4px; }
.contribute-paths { display: grid; grid-template-columns: repeat(2, minmax(0, 1fr)); gap: var(--sp-3); }
.contribute-path { border-radius: var(--r); padding: var(--sp-3) var(--sp-4); background: var(--bg-input); border: 1px solid var(--border); }
.contribute-path-yes { border-color: color-mix(in srgb, var(--green) 40%, var(--border)); }
.contribute-path-no { border-color: color-mix(in srgb, var(--accent) 40%, var(--border)); }
.contribute-path-label { font-size: .7rem; font-weight: 700; text-transform: uppercase; letter-spacing: .05em; margin-bottom: var(--sp-1); }
.contribute-path-yes .contribute-path-label { color: var(--green); }
.contribute-path-no .contribute-path-label { color: var(--accent); }
.contribute-path p { font-size: .82rem; color: var(--text-2); margin: 0; }
.contribute-path a { color: var(--accent); text-decoration: none; font-weight: 600; }
.contribute-path a:hover { text-decoration: underline; }
.contribute-aside {
  font-size: .78rem; color: var(--text-3); line-height: 1.6;
  margin: 0 0 var(--sp-6); padding-top: var(--sp-3); border-top: 1px solid var(--border);
}
.contribute-aside a { color: var(--text-2); }
.contribute-aside code { font-family: var(--mono); background: var(--bg-input); padding: .05rem .25rem; border-radius: 3px; }
.contribute-card {
  border: 1px solid var(--border); border-radius: var(--r-lg); padding: var(--sp-4);
  background: var(--bg-card); box-shadow: var(--shadow);
  transition: var(--t);
  min-width: 0; /* prevent grid blowout from <pre> */
  overflow: hidden;
}
.contribute-card:hover { border-color: var(--border-strong); box-shadow: var(--shadow-md); transform: translateY(-2px); }
.contribute-card-head { display: flex; align-items: center; gap: var(--sp-3); margin-bottom: var(--sp-2); }
.contribute-card-head h3 { margin: 0; font-size: .92rem; font-weight: 650; }
.contribute-icon {
  width: 28px; height: 28px; flex-shrink: 0; border-radius: 8px;
  background: var(--accent-2); color: var(--accent);
  display: flex; align-items: center; justify-content: center;
}
.contribute-icon svg { width: 15px; height: 15px; }
.contribute-card p { font-size: .82rem; color: var(--text-2); margin-bottom: .4rem; line-height: 1.45; }

/* The one clear thing to click — same seamless path for a human or an agent. */
.contribute-card a.contribute-cta {
  display: inline-flex; align-items: center; gap: var(--sp-2);
  background: var(--accent); color: #fff;
  border-radius: var(--r-sm); padding: .55rem var(--sp-3);
  font-size: .8rem; font-weight: 700; text-decoration: none;
  margin: var(--sp-1) 0 var(--sp-3); transition: var(--t);
}
.contribute-card a.contribute-cta:hover { transform: translateY(-1px); box-shadow: var(--shadow-md); text-decoration: none; color: #fff; }
.contribute-cta svg { width: 13px; height: 13px; flex-shrink: 0; }

.contribute-card .resource-list { margin: .2rem 0 .5rem; }
.contribute-card .code-block { margin: .4rem 0 0; }
.contribute-card .code-block pre { padding: .4rem .55rem; overflow-x: auto; max-width: 100%; }
.contribute-card .code-block code { font-size: .72rem; }

.credits-section { display: flex; flex-direction: column; gap: .75rem; margin: .5rem 0 1rem; }
.credits-group h4 {
  font-size: .64rem; text-transform: uppercase; letter-spacing: .05em;
  color: var(--text-3); margin-bottom: .3rem; font-weight: 600;
}
.credits-chips { display: flex; flex-wrap: wrap; gap: .25rem; }
.credits-chips .chip { font-size: .7rem; padding: .1rem .4rem; }

/* Stat row */
.stat-row { display: flex; gap: 1.5rem; margin: 1rem 0; flex-wrap: wrap; }
.stat { display: flex; flex-direction: column; gap: 1px; }
.stat-num { font-size: 1.4rem; font-weight: 700; letter-spacing: -.02em; color: var(--accent); }
.stat-label { font-size: .7rem; color: var(--text-3); text-transform: uppercase; letter-spacing: .04em; }

/* Resource list */
.resource-list { list-style: none; margin: .3rem 0; }
.resource-list li { padding: .12rem 0; font-size: .85rem; }
.resource-list a { color: var(--accent); }

/* Code blocks with header + copy */
.code-block {
  border: 1px solid var(--border); border-radius: var(--r); overflow: hidden; margin: .4rem 0;
}
.code-header {
  display: flex; justify-content: space-between; align-items: center;
  padding: .3rem .65rem; background: var(--bg-elevated);
  border-bottom: 1px solid var(--border);
}
.code-header span { font-size: .66rem; color: var(--text-3); text-transform: uppercase; letter-spacing: .04em; }
.code-block pre, .code-inline { margin: 0; background: var(--bg-code); border: none; border-radius: 0; }
.code-block pre { padding: .55rem .65rem; overflow-x: auto; }
.code-block code, .code-inline code { font-family: var(--mono); font-size: .76rem; }
.code-inline { padding: .55rem .65rem; overflow-x: auto; }

.code-install { margin-bottom: .75rem; }

/* Copy button */
.btn-copy {
  background: var(--accent-2); color: var(--accent);
  border: 1px solid transparent; border-radius: 4px;
  padding: .15rem .5rem; font-size: .68rem; font-weight: 500;
  cursor: pointer; font-family: var(--font); transition: var(--t);
}
.btn-copy:hover { background: var(--accent-3); }
.btn-copy.copied { background: var(--green-bg); color: var(--green); }

/* Scoring section */
.scoring-table { display: flex; flex-direction: column; gap: .5rem; margin: var(--sp-4) 0; }
.score-grade-row {
  display: flex; align-items: center; gap: var(--sp-3);
  font-size: .85rem; color: var(--text-2);
}
.score-grade-row .card-score { min-width: 68px; text-align: center; }

/* Score explainer (Scores tab — sole source of truth for methodology) — full
   width, same measure as the leaderboard table above it. Only the intro
   paragraph keeps a readable line length; the grade legend and factor cards
   use the whole row. */
.score-explainer {
  margin-top: var(--sp-7); padding-top: var(--sp-6); border-top: 1px solid var(--border);
}
.score-explainer h3 { font-size: 1.05rem; font-weight: 700; margin-bottom: var(--sp-3); }
.score-explainer-lede { font-size: .88rem; color: var(--text-2); line-height: 1.6; margin-bottom: var(--sp-4); max-width: 72ch; }
.score-explainer-lede em { color: var(--text); font-style: normal; font-weight: 600; }
.score-factor-groups {
  display: grid; grid-template-columns: repeat(4, minmax(0, 1fr)); gap: var(--sp-4);
  margin-top: var(--sp-5);
}
@media (max-width: 1000px) {
  .score-factor-groups { grid-template-columns: repeat(2, minmax(0, 1fr)); }
}
.score-factor-group {
  background: var(--bg-card); border: 1px solid var(--border); border-radius: var(--r);
  padding: var(--sp-4); box-shadow: var(--shadow);
}
.score-factor-group h4 {
  display: flex; align-items: baseline; justify-content: space-between; gap: var(--sp-2);
  font-size: .84rem; font-weight: 700; margin-bottom: var(--sp-1);
}
.score-factor-group-max { font-size: .68rem; font-weight: 600; color: var(--text-3); white-space: nowrap; }
.score-factor-group > p { font-size: .78rem; color: var(--text-3); margin-bottom: var(--sp-3); }
.score-factor-group .modal-table { font-size: .8rem; }
.score-factor-group .modal-table td:first-child { width: auto; color: var(--text-2); padding-right: var(--sp-3); }
.score-factor-group .modal-table td:last-child {
  text-align: right; font-variant-numeric: tabular-nums; font-weight: 700; color: var(--text); white-space: nowrap;
}
.score-explainer-footnote { font-size: .72rem; color: var(--text-3); margin-top: var(--sp-5); }
.score-explainer-footnote code { font-family: var(--mono); background: var(--bg-input); padding: .05rem .3rem; border-radius: 3px; }

/* MCP client cards */
.mcp-intro { font-size: .82rem; color: var(--text-2); margin-bottom: .5rem; }
.mcp-clients { display: flex; flex-direction: column; gap: .5rem; margin: .5rem 0; }
.mcp-client { border: 1px solid var(--border); border-radius: var(--r); overflow: hidden; }
.mcp-client-head {
  display: flex; justify-content: space-between; align-items: center;
  padding: .4rem .65rem; background: var(--bg-elevated); border-bottom: 1px solid var(--border);
}
.mcp-client-head strong { font-size: .8rem; }
.mcp-path { font-size: .66rem; color: var(--text-3); padding: .3rem .65rem; margin: 0; font-family: var(--mono); }

.legal { margin-top: 1.5rem; color: var(--text-3); font-size: .72rem; line-height: 1.5; }
.legal code { font-family: var(--mono); }

/* ═══ MODAL ═══ */
.modal-overlay {
  position: fixed; inset: 0; background: rgba(4,4,8,.6);
  backdrop-filter: blur(6px) saturate(140%); -webkit-backdrop-filter: blur(6px) saturate(140%);
  z-index: 100; display: flex; justify-content: center; align-items: flex-start;
  padding: 4vh var(--sp-4); overflow-y: auto; animation: fadeIn .15s ease;
}
@keyframes fadeIn { from { opacity: 0; } to { opacity: 1; } }
.modal-content {
  background: var(--bg-elevated); border: 1px solid var(--border); border-radius: var(--r-lg);
  max-width: 540px; width: 100%; padding: var(--sp-5); box-shadow: var(--shadow-lg);
  animation: slideUp .25s cubic-bezier(.2,.8,.3,1); margin: auto;
}
@keyframes slideUp { from { opacity:0; transform: translateY(16px); } to { opacity:1; transform: translateY(0); } }
.modal-content h2 { font-size: 1.1rem; margin-bottom: .1rem; }
.modal-id { color: var(--text-3); font-size: .75rem; margin-bottom: .75rem; }
.modal-close {
  float: right; cursor: pointer; font-size: 1.2rem; color: var(--text-3);
  line-height: 1; padding: 0; background: none; border: none; transition: var(--t);
}
.modal-close:hover { color: var(--text); }
.modal-score-row { display: flex; align-items: center; gap: .5rem; margin: .5rem 0 .75rem; }
.modal-score { font-size: .78rem; font-weight: 700; padding: .15rem .55rem; border-radius: 10px; }
.modal-score-desc { color: var(--text-3); font-size: .75rem; }
.modal-section { margin: .85rem 0; }
.modal-section h4 {
  font-size: .64rem; text-transform: uppercase; letter-spacing: .05em;
  color: var(--text-3); margin-bottom: .25rem; font-weight: 600;
}
.modal-table { width: 100%; border-collapse: collapse; font-size: .8rem; }
.modal-table td { padding: .28rem .4rem; border-bottom: 1px solid var(--border); }
.modal-table td:first-child { color: var(--text-3); width: 40%; }
.modal-table tr:last-child td { border-bottom: none; }
.modal-content a { color: var(--accent); text-decoration: none; }
.modal-content a:hover { text-decoration: underline; }

/* ═══ FOOTER ═══ */
footer {
  text-align: center; padding: 1rem; border-top: 1px solid var(--border);
  font-size: .73rem; color: var(--text-3); margin-top: auto;
}
footer a { color: var(--accent); text-decoration: none; }
footer a:hover { text-decoration: underline; }

/* ═══ EMPTY STATE ═══ */
.empty-state { grid-column: 1/-1; text-align: center; padding: 2rem 1rem; color: var(--text-3); font-size: .85rem; }
.btn-retry {
  margin-top: .6rem; background: var(--accent-2); color: var(--accent); border: 1px solid var(--accent);
  border-radius: var(--r-sm); padding: .4rem .85rem; font-size: .78rem; font-weight: 600;
  font-family: var(--font); cursor: pointer; transition: var(--t);
}
.btn-retry:hover { background: var(--accent-3); }
.btn-copy.failed { background: var(--red-bg); color: var(--red); }

/* ═══ SCORE BREAKDOWN ═══ */
.card-score { cursor: pointer; transition: transform var(--t); }
.card-score.active { transform: scale(1.08); box-shadow: 0 0 0 2px rgba(91,127,251,.3); }
.card-score:hover { transform: scale(1.08); }

.score-breakdown {
  grid-column: 1 / -1;
  margin-top: .35rem; padding: .4rem .55rem;
  border-top: 1px solid var(--border);
  animation: fadeIn .15s ease;
}
.sb-factors { display: flex; flex-direction: column; gap: 0; }
.sb-row {
  display: flex; align-items: center; gap: .4rem;
  font-size: .72rem; padding: .12rem 0;
}
.sb-icon { width: 14px; text-align: center; font-size: .68rem; flex-shrink: 0; }
.sb-label { flex: 1; color: var(--text-2); }
.sb-pts { font-variant-numeric: tabular-nums; font-weight: 600; flex-shrink: 0; }
.sb-earned .sb-icon { color: var(--green); }
.sb-earned .sb-pts { color: var(--green); }
.sb-missed { opacity: .45; }
.sb-missed .sb-icon { color: var(--text-3); }
.sb-missed .sb-pts { color: var(--text-3); }

/* Modal score (compact row, click to expand details) */
.modal-score-row { display: flex; align-items: center; gap: .5rem; margin: .5rem 0 .25rem; }
.modal-score-desc { color: var(--text-3); font-size: .75rem; }
.modal-score-details {
  margin-bottom: .5rem; padding: .4rem .55rem;
  border-top: 1px solid var(--border);
}

/* ═══ PROVENANCE CHAIN ═══ */
.provenance-chain { display: flex; flex-direction: column; gap: 0; }
.prov-step {
  display: flex; align-items: flex-start; gap: .5rem;
  font-size: .78rem; color: var(--text-2); padding: .2rem 0;
  position: relative;
}
.prov-step:not(:last-child)::before {
  content: ''; position: absolute;
  left: 3px; top: 18px; bottom: -2px;
  width: 1px; background: var(--border);
}
.prov-dot {
  width: 7px; height: 7px; border-radius: 50%;
  background: var(--accent); margin-top: 4px; flex-shrink: 0;
  z-index: 1;
}
.prov-dot-apple { background: var(--accent); }
.prov-dot-community { background: var(--green); }
.prov-dot-muted { background: var(--text-3); }
.prov-text a { color: var(--accent); text-decoration: none; }
.prov-text a:hover { text-decoration: underline; }

/* ═══ RESPONSIVE ═══ */
@media (max-width: 820px) {
  #filters { width: 100%; position: static; max-height: none; flex-direction: row; flex-wrap: wrap; gap: .5rem; }
  #filters .io-bar { width: 100%; }
  .filter-group { flex: 1; min-width: 110px; }
  .filter-group-device { flex-basis: 100%; }
  .filters-more-row { flex-basis: 100%; }
  .filter-more-body { flex-direction: row; flex-wrap: wrap; }
  .filter-more-body .filter-group { flex: 1; min-width: 110px; }
  .tab-content.active { flex-direction: column; }
  #model-grid { grid-template-columns: 1fr; }
  .contribute-grid { grid-template-columns: minmax(0, 1fr); }
  #scores.active, #about.active, #contribute.active, #skills.active { max-width: 100%; }
  /* Ensure block-display tabs don't inherit flex column */
  #tasks.active, #about.active, #contribute.active, #scores.active, #skills.active { display: block; }
  /* Below 820px #filters is no longer a narrow sidebar — it's a wrapped
     full-width row, same as Scores' filter bar. Match Scores' io-bar
     treatment here so both tabs behave identically on mobile. */
  #filters .io-bar { flex-direction: row; align-items: flex-end; }
  #filters .io-arrow-wrap { display: flex; }
  /* Search+Capability share a row, Device always gets its own full row —
     same pattern as Explore, so Device's three buttons get real room. */
  .lb-filter-bar { grid-template-columns: repeat(2, minmax(0, 1fr)); }
  .lb-device-wrap { grid-column: 1 / -1; }
  .skills-entry { grid-template-columns: 1fr; }
  .skill-columns { grid-template-columns: 1fr; }
  #task-list { grid-template-columns: 1fr; }
}
@media (max-width: 480px) {
  .header-inner { padding: .5rem .7rem; gap: .5rem; }
  .header-badge { display: none; }
  .header-text h1 { font-size: .92rem; }
  .tab-content { padding: .85rem; }
  .tab { padding: .7rem .5rem; font-size: .76rem; }
  .header-tagline { font-size: .62rem; }
  .hero-headline { font-size: 1.2rem; }
  .stat-row { gap: 1rem; }
  .stat-num { font-size: 1.1rem; }
  /* Contribute cards: stack icons tighter, prevent code overflow */
  .contribute-card { padding: .65rem; overflow-wrap: break-word; word-break: break-word; }
  .contribute-card .code-block pre { font-size: .68rem; }
  .contribute-card .resource-list li { font-size: .78rem; }
  /* Leaderboard: tighter columns on narrow screens */
  .lb-table { font-size: .72rem; min-width: 480px; }
  .lb-cap { max-width: 160px; }
  .lb-score { width: 60px; }

  /* Scores has a lot of filter chrome above the table — compact it hard so
     the actual leaderboard isn't pushed entirely off-screen on a phone. */
  .about-content h2 { font-size: 1.3rem; }
  #scores .lede { margin-bottom: var(--sp-3); font-size: .8rem; }
  #scores .io-bar { padding: var(--sp-3); margin-bottom: var(--sp-3); }
  .io-field .io-label { margin-bottom: 2px; }
  .lb-filter-bar { gap: var(--sp-2) var(--sp-3); margin-bottom: var(--sp-2); }
  .lb-filter-group select, .lb-search-wrap input { min-height: 34px; padding: .35rem var(--sp-2); font-size: .78rem; }
  .lb-filter-group label { font-size: .6rem; }
  .seg { min-height: 34px; padding: .4rem .2rem; }
  .filter-more summary { font-size: .7rem; }
  #scores .filter-more { margin-bottom: var(--sp-3); }
  .score-factor-groups { grid-template-columns: 1fr; }
}