/* ============================================================================
   Periodic Table — Element Lab UI layer (v2)
   Loaded after periodic-table.css — hero, dark stage, premium tiles, mobile
   ============================================================================ */

@keyframes ptFadeUp {
  from { opacity: 0; transform: translateY(16px); }
  to { opacity: 1; transform: translateY(0); }
}
@keyframes ptShimmer {
  0% { background-position: 200% center; }
  100% { background-position: -200% center; }
}
@keyframes ptScrollHint {
  0%, 100% { opacity: .5; transform: translateX(0); }
  50% { opacity: 1; transform: translateX(4px); }
}

.pt-page { --tint: 18%; --tint-hover: 32%; }

.pt-shell {
  position: relative; overflow: hidden; padding-bottom: 2rem;
  background:
    radial-gradient(ellipse 72% 55% at 6% -8%, rgba(109, 40, 217, .16), transparent 52%),
    radial-gradient(ellipse 58% 48% at 94% 12%, rgba(99, 102, 241, .12), transparent 48%),
    radial-gradient(ellipse 50% 40% at 50% 100%, rgba(192, 38, 211, .08), transparent 55%);
}
.pt-shell::before, .pt-shell::after {
  content: ""; position: absolute; border-radius: 50%; pointer-events: none;
  filter: blur(56px); z-index: 0;
  animation: ptBlobDrift 18s ease-in-out infinite alternate;
}
.pt-shell::before {
  width: 380px; height: 380px; top: -140px; right: -80px;
  background: rgba(109, 40, 217, .22);
}
.pt-shell::after {
  width: 320px; height: 320px; bottom: 60px; left: -110px;
  background: rgba(99, 102, 241, .18);
  animation-delay: -9s;
}
@keyframes ptBlobDrift {
  from { transform: translate(0, 0) scale(1); }
  to { transform: translate(24px, 18px) scale(1.08); }
}
.pt-shell > .pt-wrap::before {
  content: ""; position: fixed; inset: 0; pointer-events: none; z-index: 0; opacity: .28;
  background-image:
    linear-gradient(rgba(109, 40, 217, .045) 1px, transparent 1px),
    linear-gradient(90deg, rgba(109, 40, 217, .045) 1px, transparent 1px);
  background-size: 28px 28px;
  mask-image: linear-gradient(180deg, #000 0%, transparent 85%);
}
[data-theme="dark"] .pt-shell > .pt-wrap::before { opacity: .14; }
.pt-wrap { position: relative; z-index: 1; padding-top: 0; }

/* Hide marketing chrome — HTML stays for SEO; table is first thing on screen */
.pt-crumb,
.pt-hero,
.pt-studio-bar,
.pt-labbar,
.pt-help {
  position: absolute !important;
  width: 1px !important;
  height: 1px !important;
  padding: 0 !important;
  margin: -1px !important;
  overflow: hidden !important;
  clip: rect(0, 0, 0, 0) !important;
  white-space: nowrap !important;
  border: 0 !important;
}

/* ---- hero (hidden visually; styles kept if re-enabled) ---- */
.pt-hero {
  display: grid; grid-template-columns: minmax(0, 1.22fr) minmax(0, 0.88fr);
  gap: 1rem; align-items: stretch;
  padding: .35rem 0 .5rem;
  animation: ptFadeUp .55s cubic-bezier(.22, 1, .36, 1) both;
}

/* Table-first: keep H1 for SEO, trim marketing chrome above the grid */
.pt-hero__lede,
.pt-hero__trust,
.pt-hero__cta,
.pt-hero__sub { display: none; }

@media (max-width: 960px) {
  .pt-hero { grid-template-columns: 1fr; gap: 0; padding: .2rem 0 .35rem; }
  .pt-hero__spec { display: none !important; }
}

@media (min-width: 961px) {
  .pt-hero { grid-template-columns: minmax(0, 1fr) auto; align-items: center; }
  .pt-hero__spec { max-width: 15rem; padding: .65rem .75rem; }
  .pt-hero__spec-grid { gap: .35rem; }
  .pt-hero__spec-tile { aspect-ratio: 1; }
  .pt-hero__spec-tile b { font-size: 1.05rem; }
  .pt-hero__spec-label { margin-bottom: .45rem; font-size: .6rem; }
}

.pt-hero__main {
  position: relative; padding: .75rem 1rem .8rem;
  border-radius: var(--r-lg); background: var(--surface);
  border: 1px solid var(--border-strong);
  box-shadow: var(--shadow-md);
  overflow: hidden;
}
.pt-hero__main::before {
  content: ""; position: absolute; inset: 0; border-radius: inherit; padding: 1px; pointer-events: none;
  background: linear-gradient(135deg, rgba(109, 40, 217, .45), rgba(99, 102, 241, .25), rgba(192, 38, 211, .35));
  -webkit-mask: linear-gradient(#fff 0 0) content-box, linear-gradient(#fff 0 0);
  mask: linear-gradient(#fff 0 0) content-box, linear-gradient(#fff 0 0);
  -webkit-mask-composite: xor; mask-composite: exclude;
}
.pt-hero__main::after {
  content: ""; position: absolute; top: -60px; right: -40px; width: 180px; height: 180px;
  border-radius: 50%; background: radial-gradient(circle, var(--accent-soft), transparent 70%);
  pointer-events: none;
}

.pt-hero__eyebrow {
  display: inline-flex; align-items: center; gap: .35rem;
  font-size: .62rem; font-weight: 800; letter-spacing: .1em; text-transform: uppercase;
  color: #fff; padding: .22rem .6rem; border-radius: 999px;
  background: linear-gradient(135deg, var(--accent), var(--noble-gas));
  box-shadow: 0 4px 12px rgba(109, 40, 217, .22);
}
.pt-hero__title {
  margin: .45rem 0 0; font-size: clamp(1.35rem, 3.2vw, 2rem);
  font-weight: 900; line-height: 1.1; letter-spacing: -.03em;
  background: linear-gradient(135deg, var(--text-primary) 10%, var(--accent) 50%, var(--halogen) 90%);
  -webkit-background-clip: text; background-clip: text; -webkit-text-fill-color: transparent;
}
.pt-hero__sub {
  margin: 0 0 .5rem; font-size: .82rem; font-weight: 700; letter-spacing: .06em;
  text-transform: uppercase; color: var(--muted);
}
[data-theme="dark"] .pt-hero__title {
  background: linear-gradient(135deg, #faf5ff 10%, #c4b5fd 50%, #93c5fd 90%);
  -webkit-background-clip: text; background-clip: text;
}
.pt-hero__lede {
  margin: 0; max-width: 54ch; font-size: 1.02rem; line-height: 1.68; color: var(--text-secondary);
}
.pt-hero__trust {
  display: flex; flex-wrap: wrap; gap: .4rem; margin: 1rem 0 0; padding: 0; list-style: none;
}
.pt-hero__trust li {
  font-size: .76rem; font-weight: 650; color: var(--text-secondary);
  padding: .32rem .68rem; border-radius: 999px;
  border: 1px solid var(--border); background: var(--surface-raised);
}
.pt-hero__cta { display: flex; flex-wrap: wrap; gap: .55rem; margin-top: 1.15rem; }
.pt-hero__cta .pt-btn { min-height: 46px; border-radius: 999px; padding: .7rem 1.2rem; }
.pt-hero__cta .pt-btn--primary {
  background: linear-gradient(135deg, var(--accent-deep), var(--accent), #7c3aed);
  border: none; color: #fff;
  box-shadow: 0 8px 28px rgba(109, 40, 217, .42);
}
.pt-hero__cta .pt-btn--primary:hover {
  filter: brightness(1.06);
  box-shadow: 0 12px 32px rgba(109, 40, 217, .5);
}
@media (max-width: 520px) { .pt-hero__cta .pt-btn { flex: 1 1 100%; } }

.pt-hero__spec {
  padding: 1.1rem; border-radius: var(--r-xl);
  border: 1px solid var(--border-strong); background: var(--surface);
  box-shadow: var(--shadow-md);
  background-image:
    linear-gradient(rgba(109, 40, 217, .04) 1px, transparent 1px),
    linear-gradient(90deg, rgba(109, 40, 217, .04) 1px, transparent 1px);
  background-size: 22px 22px;
}
.pt-hero__spec-label {
  margin: 0 0 .75rem; font-size: .66rem; font-weight: 800;
  letter-spacing: .12em; text-transform: uppercase; color: var(--muted);
}
.pt-hero__spec-grid { display: grid; grid-template-columns: repeat(3, 1fr); gap: .5rem; }
.pt-hero__spec-tile {
  --cat: var(--accent);
  display: flex; flex-direction: column; align-items: center; justify-content: center;
  aspect-ratio: 1; border-radius: var(--r-md); text-align: center;
  border: 1px solid color-mix(in srgb, var(--cat) 45%, var(--border));
  background: linear-gradient(160deg, color-mix(in srgb, var(--cat) 22%, var(--surface)), var(--surface));
  box-shadow: 0 4px 14px color-mix(in srgb, var(--cat) 18%, transparent);
  transition: transform .16s ease, box-shadow .16s ease;
}
.pt-hero__spec-tile:hover {
  transform: translateY(-3px) scale(1.03);
  box-shadow: 0 10px 24px color-mix(in srgb, var(--cat) 28%, transparent);
}
.pt-hero__spec-tile span {
  font-size: .58rem; font-weight: 700; color: var(--muted);
  align-self: flex-start; padding: .25rem 0 0 .35rem;
}
.pt-hero__spec-tile b { font-size: 1.35rem; font-weight: 900; letter-spacing: -.02em; line-height: 1; color: var(--text-primary); }
.pt-hero__spec-tile small { font-size: .58rem; font-weight: 600; color: var(--text-secondary); margin-top: .1rem; }

/* ---- app shell ---- */
.pt-app {
  position: relative;
  animation: ptFadeUp .6s cubic-bezier(.22, 1, .36, 1) .06s both;
  border-color: var(--border-strong);
  box-shadow: var(--shadow-lg);
  background: linear-gradient(180deg, var(--surface-raised), var(--surface));
  overflow: hidden;
}
.pt-app::before {
  content: ""; position: absolute; top: 0; left: 0; right: 0; height: 4px; z-index: 3;
  background: linear-gradient(90deg, var(--alkali), var(--halogen), var(--lanthanide), var(--actinide), var(--accent));
  background-size: 200% 100%;
  animation: ptShimmer 7s linear infinite;
}

.pt-studio-bar {
  display: flex; align-items: center; gap: .65rem;
  padding: .4rem .85rem; border-bottom: 1px solid var(--border);
  background: linear-gradient(180deg, color-mix(in srgb, var(--accent) 6%, var(--surface-raised)), var(--surface));
}
.pt-studio-bar__dots {
  display: inline-flex; gap: .35rem;
}
.pt-studio-bar__dots i {
  width: .62rem; height: .62rem; border-radius: 50%; display: block;
}
.pt-studio-bar__dots i:nth-child(1) { background: #ff5f57; box-shadow: inset 0 -1px 2px rgba(0,0,0,.15); }
.pt-studio-bar__dots i:nth-child(2) { background: #febc2e; box-shadow: inset 0 -1px 2px rgba(0,0,0,.15); }
.pt-studio-bar__dots i:nth-child(3) { background: #28c840; box-shadow: inset 0 -1px 2px rgba(0,0,0,.15); }
.pt-studio-bar__title {
  font-size: .78rem; font-weight: 800; letter-spacing: .04em;
  color: var(--text-secondary); text-transform: uppercase;
}
.pt-studio-bar__live {
  margin-left: auto; display: inline-flex; align-items: center; gap: .4rem;
  font-size: .68rem; font-weight: 700; color: var(--muted); letter-spacing: .03em;
}
.pt-studio-bar__pulse {
  width: .45rem; height: .45rem; border-radius: 50%;
  background: #22c55e; box-shadow: 0 0 0 0 rgba(34, 197, 94, .5);
  animation: ptLivePulse 2s ease-out infinite;
}
@keyframes ptLivePulse {
  0% { box-shadow: 0 0 0 0 rgba(34, 197, 94, .55); }
  70% { box-shadow: 0 0 0 8px rgba(34, 197, 94, 0); }
  100% { box-shadow: 0 0 0 0 rgba(34, 197, 94, 0); }
}

.pt-labbar {
  display: flex; flex-wrap: wrap; align-items: center; justify-content: space-between; gap: .45rem .75rem;
  padding: .45rem .85rem; border-bottom: 1px solid var(--border);
  background: color-mix(in srgb, var(--accent) 5%, var(--surface));
}
.pt-labbar__stats {
  display: grid; grid-template-columns: repeat(4, minmax(3.5rem, 1fr));
  gap: .3rem; list-style: none; margin: 0; padding: 0; flex: 1 1 14rem; max-width: 20rem;
}
.pt-labbar__stats li {
  text-align: center; padding: .3rem .25rem; border-radius: var(--r-sm);
  background: var(--surface); border: 1px solid var(--border);
  box-shadow: var(--shadow-sm); transition: transform .14s ease, box-shadow .14s ease;
}
.pt-labbar__stats li:hover { transform: translateY(-2px); box-shadow: var(--shadow-md); }
.pt-labbar__stats b {
  display: block; font-size: .95rem; font-weight: 900; letter-spacing: -.03em;
  background: linear-gradient(135deg, var(--accent), var(--halogen));
  -webkit-background-clip: text; background-clip: text; color: transparent;
}
.pt-labbar__stats li:nth-child(4) b {
  background: linear-gradient(135deg, var(--radioactive), var(--alkali));
  -webkit-background-clip: text; background-clip: text;
}
.pt-labbar__stats span {
  font-size: .62rem; font-weight: 700; color: var(--muted);
  text-transform: uppercase; letter-spacing: .04em;
}
.pt-labbar__jump {
  font-size: .82rem; font-weight: 700; text-decoration: none; color: var(--accent);
  padding: .45rem .85rem; border-radius: 999px;
  border: 1px solid color-mix(in srgb, var(--accent) 30%, transparent);
  background: var(--accent-soft); white-space: nowrap;
  transition: background .15s, transform .12s;
}
/* Table-first: grid on load, then search & filters */
.pt-app { display: flex; flex-direction: column; }
.pt-controls { display: contents; }
.pt-workspace { order: 1; }
.pt-controls__search { order: 2; border-top: 1px solid var(--border); }
.pt-controls__filters { order: 3; border-top: 1px solid var(--border); background: var(--surface-raised); }

@media (min-width: 901px) {
  .pt-controls__filters { background: var(--surface); }
}
.pt-controls { background: var(--surface); border-bottom: 1px solid var(--border); }
.pt-help {
  border-bottom: 1px solid var(--border);
  background: linear-gradient(90deg, var(--accent-soft), transparent);
}
.pt-help summary {
  cursor: pointer; list-style: none; display: flex; align-items: center; gap: .45rem;
  padding: .45rem 1rem; font-size: .8rem; font-weight: 650; color: var(--text-secondary);
}
.pt-toolbar { padding: .45rem .85rem; background: linear-gradient(180deg, var(--surface-raised), var(--surface)); }
.pt-quick { padding: .35rem .85rem .45rem; }
.pt-filters { padding: .35rem .85rem .5rem; }
.pt-filters__title { font-size: .72rem; margin-bottom: .35rem; }
.pt-help summary::-webkit-details-marker { display: none; }
.pt-help summary::after { content: "+"; margin-left: auto; font-weight: 800; color: var(--accent); }
.pt-help[open] summary::after { content: "−"; }
.pt-help[open] summary { border-bottom: 1px solid var(--border); background: var(--surface-raised); }
.pt-help__body { padding: .65rem 1rem .75rem; }
.pt-help__body ul { margin: 0; padding-left: 1.1rem; font-size: .84rem; line-height: 1.65; color: var(--text-secondary); }

.pt-search input {
  min-height: 44px; border-radius: 999px; padding-left: 2.35rem;
  background: var(--surface-raised);
  border-color: color-mix(in srgb, var(--accent) 22%, var(--border-strong));
  box-shadow: inset 0 1px 2px rgba(24, 20, 48, .04);
}
.pt-search__icon { left: .9rem; }
.pt-btn--primary {
  border-radius: 999px;
  box-shadow: 0 6px 20px color-mix(in srgb, var(--accent) 38%, transparent);
}
.pt-btn--primary:hover {
  box-shadow: 0 10px 26px color-mix(in srgb, var(--accent) 45%, transparent);
}
.pt-chip { min-height: 40px; border-radius: 999px; }
.pt-chip[aria-pressed="true"] {
  box-shadow: 0 4px 14px color-mix(in srgb, var(--accent) 35%, transparent);
}
.pt-quick__track { display: flex; flex-wrap: wrap; gap: .35rem; align-items: center; }

/* ---- dark table stage ---- */
.pt-stage-wrap { padding: 0; }
.pt-scroll-hint { display: none !important; }

.pt-stage {
  position: relative;
  margin: 0 .85rem; padding: .85rem 0 1rem; border-radius: var(--r-lg);
  background:
    radial-gradient(ellipse 80% 60% at 50% 0%, rgba(109, 40, 217, .16), transparent 55%),
    linear-gradient(180deg, #1c1834 0%, #12101f 55%, #0e0c18 100%);
  border: 1px solid rgba(167, 139, 250, .18);
  box-shadow: inset 0 1px 0 rgba(255, 255, 255, .06), 0 16px 48px rgba(10, 8, 24, .35);
  overflow: hidden;
}
.pt-stage::before {
  content: ""; position: absolute; inset: 0; pointer-events: none; opacity: .35;
  background-image:
    radial-gradient(circle at 20% 30%, rgba(167, 139, 250, .15) 1px, transparent 1px),
    radial-gradient(circle at 70% 60%, rgba(99, 102, 241, .12) 1px, transparent 1px);
  background-size: 48px 48px, 64px 64px;
}
.pt-stage::after {
  content: ""; position: absolute; top: -40%; left: -20%; width: 60%; height: 80%;
  pointer-events: none;
  background: radial-gradient(ellipse, rgba(167, 139, 250, .12), transparent 70%);
  animation: ptStageGlow 8s ease-in-out infinite alternate;
}
@keyframes ptStageGlow {
  from { transform: translate(0, 0); opacity: .6; }
  to { transform: translate(12%, 8%); opacity: 1; }
}
[data-theme="dark"] .pt-stage {
  background:
    radial-gradient(ellipse 80% 60% at 50% 0%, rgba(167, 139, 250, .12), transparent 55%),
    linear-gradient(180deg, #14102a 0%, #0a0814 100%);
  border-color: rgba(167, 139, 250, .22);
}

.pt-stage .pt-viewport { position: relative; z-index: 1; padding: .35rem .75rem .55rem; background: transparent; }
@media (max-width: 900px) {
  .pt-stage .pt-viewport {
    mask-image: linear-gradient(90deg, transparent 0, #000 16px, #000 calc(100% - 16px), transparent 100%);
    -webkit-mask-image: linear-gradient(90deg, transparent 0, #000 16px, #000 calc(100% - 16px), transparent 100%);
  }
}

.pt-stage .pt-axis { color: rgba(255, 255, 255, .42); }
.pt-stage .pt-fblock-label { color: rgba(255, 255, 255, .55); }
.pt-stage .pt-fblock-label span { color: rgba(255, 255, 255, .35); }
.pt-stage .pt-placeholder {
  background: rgba(255, 255, 255, .04); border-color: rgba(255, 255, 255, .14); color: rgba(255, 255, 255, .45);
}
.pt-stage .pt-placeholder b { color: rgba(255, 255, 255, .65); }

.pt-stage-wrap .pt-legend {
  margin: .75rem 1rem 0; padding: .65rem .9rem;
  background: var(--surface-raised); border-color: var(--border);
}
.pt-stage-wrap .pt-recent { margin: 0 1rem; border-radius: var(--r-md); }

/* glowing tiles on dark stage */
.pt-stage .pt-el {
  border-color: color-mix(in srgb, var(--cat) 55%, rgba(255, 255, 255, .12));
  background: linear-gradient(165deg,
    color-mix(in srgb, var(--cat) 28%, #2a2548),
    color-mix(in srgb, var(--cat) 12%, #1a1730));
  box-shadow: 0 2px 10px rgba(0, 0, 0, .35), inset 0 1px 0 rgba(255, 255, 255, .12);
  color: #f8f6ff;
}
.pt-stage .pt-el__z { color: rgba(255, 255, 255, .55); }
.pt-stage .pt-el__name { color: rgba(255, 255, 255, .62); }
.pt-stage .pt-el__mass { color: rgba(255, 255, 255, .5); }
.pt-stage .pt-el::before { opacity: 1; height: 4px; }
.pt-stage .pt-el:hover,
.pt-stage .pt-el:focus-visible {
  transform: translateY(-4px) scale(1.06);
  box-shadow:
    0 10px 28px color-mix(in srgb, var(--cat) 45%, transparent),
    0 0 24px color-mix(in srgb, var(--cat) 22%, transparent),
    inset 0 1px 0 rgba(255, 255, 255, .18);
  border-color: var(--cat);
  z-index: 5;
}
.pt-stage .pt-el.is-selected {
  box-shadow: 0 0 0 2.5px #fff, 0 0 0 5px var(--accent), 0 12px 32px rgba(109, 40, 217, .45);
}
.pt-stage .pt-el.is-dimmed { opacity: .12; filter: saturate(.2) brightness(.7); }

@media (max-width: 640px) {
  .pt-stage .pt-el:active,
  .pt-stage .pt-el.is-selected {
    opacity: 1;
    filter: none;
  }
  .pt-stage .pt-el.is-selected {
    box-shadow:
      0 0 0 2px #fff,
      0 0 0 4px var(--accent),
      0 8px 24px color-mix(in srgb, var(--cat) 40%, transparent);
  }
}

.pt-viewport::-webkit-scrollbar-thumb { background: rgba(167, 139, 250, .45); }
.pt-viewport::-webkit-scrollbar-track { background: rgba(255, 255, 255, .06); }

/* editorial */
.pt-content section {
  background: var(--surface); border: 1px solid var(--border);
  border-radius: var(--r-lg); padding: 1.25rem 1.35rem; box-shadow: var(--shadow-sm);
}
.pt-content section:first-of-type { margin-top: 2rem; }
.pt-keyfacts li { transition: transform .14s ease, box-shadow .14s ease; }
.pt-keyfacts li:hover { transform: translateY(-3px); box-shadow: var(--shadow-md); }

/* navbar */
.pt-page .navbar {
  border-color: rgba(109, 40, 217, .14) !important;
  box-shadow: 0 1px 0 rgba(255, 255, 255, .95) inset, 0 16px 48px rgba(109, 40, 217, .1), 0 4px 12px rgba(15, 23, 42, .05) !important;
}
.pt-page .site-header--scrolled .navbar { border-color: rgba(109, 40, 217, .2) !important; }
[data-theme="dark"] .pt-page .navbar {
  border-color: rgba(167, 139, 250, .2) !important;
  box-shadow: 0 1px 0 rgba(255, 255, 255, .05) inset, 0 16px 48px rgba(0, 0, 0, .35) !important;
}
.pt-page .navbar::before {
  background: linear-gradient(135deg, rgba(109, 40, 217, .45), rgba(99, 102, 241, .28), rgba(192, 38, 211, .22)) !important;
}
.pt-page .brand-mark {
  background: linear-gradient(145deg, #6d28d9, #7c3aed, #6366f1) !important;
  box-shadow: 0 8px 22px rgba(109, 40, 217, .36) !important;
}
.pt-page .brand > span:last-child {
  background: linear-gradient(135deg, #4c1d95, #6d28d9, #6366f1) !important;
  -webkit-background-clip: text !important; background-clip: text !important;
  -webkit-text-fill-color: transparent !important;
}
[data-theme="dark"] .pt-page .brand > span:last-child {
  background: linear-gradient(135deg, #f1eeff, #c4b5fd, #a5b4fc) !important;
  -webkit-background-clip: text !important; background-clip: text !important;
  -webkit-text-fill-color: transparent !important;
}
.pt-page .nav-links { background: rgba(109, 40, 217, .04) !important; border-color: rgba(109, 40, 217, .08) !important; }
[data-theme="dark"] .pt-page .nav-links { background: rgba(167, 139, 250, .08) !important; }
.pt-page .icon-btn { border-color: rgba(109, 40, 217, .12) !important; }

/* mobile */
@media (max-width: 900px) {
  .pt-stage-wrap { padding: 0; }
  .pt-stage { margin: 0 .55rem; padding: .45rem 0 .65rem; }

  /* Compact search row under the table */
  .pt-toolbar .pt-field,
  .pt-toolbar .pt-toolbar__spacer,
  .pt-toolbar #pt-clear,
  .pt-toolbar #pt-reset { display: none; }
  .pt-toolbar {
    display: flex; flex-wrap: wrap; gap: .4rem; align-items: center;
    padding: .4rem .65rem;
  }
  .pt-search { flex: 1 1 100%; }
  .pt-toolbar #pt-compare-open { margin-left: auto; min-height: 40px; }
  .pt-filters { display: none; }

  .pt-quick { flex-direction: column; align-items: stretch; gap: .45rem; }
  .pt-quick__track {
    flex-wrap: nowrap; overflow-x: auto; -webkit-overflow-scrolling: touch;
    scroll-snap-type: x proximity; scrollbar-width: none; padding-bottom: .15rem;
  }
  .pt-quick__track::-webkit-scrollbar { display: none; }
  .pt-quick__track .pt-chip { scroll-snap-align: start; flex-shrink: 0; }
  .pt-status { margin-left: 0; width: 100%; justify-content: space-between; }
  .pt-filters__grid {
    flex-wrap: nowrap; overflow-x: auto; scroll-snap-type: x proximity; scrollbar-width: none;
  }
  .pt-filters__grid::-webkit-scrollbar { display: none; }
  .pt-filters__grid > * { scroll-snap-align: start; flex-shrink: 0; }
  .pt-page .site-header + #main-content > :first-child:not(.home-hero-wrap) {
    padding-top: calc(var(--header-overlap) + .05rem) !important;
  }
}

/* desktop — table flush to top of content */
@media (min-width: 901px) {
  .pt-shell { padding-bottom: 2rem; }
  .pt-stage { margin: 0 .75rem; padding: .65rem 0 .75rem; }
  .pt-stage-wrap { padding: 0; }
  .pt-app { margin-top: 0; }
}

@media (max-width: 640px) {
  .pt-page { --cell: 52px; --gap: 3px; }
  .pt-stage { margin: 0 .55rem; }
  .pt-el { min-height: 44px; min-width: 44px; }
  .pt-chip { min-height: 44px; padding: .48rem .9rem; }
  .pt-details { padding-bottom: env(safe-area-inset-bottom, 0); }
}

@media (max-width: 480px) {
  .pt-toolbar { padding: .35rem .6rem; }
  .pt-toolbar .pt-btn--primary { flex: 0 0 auto; }
}

@media (prefers-reduced-motion: reduce) {
  .pt-hero, .pt-app { animation: none; }
  .pt-app::before { animation: none; }
  .pt-scroll-hint span { animation: none; }
  .pt-shell::before, .pt-shell::after { animation: none; }
  .pt-stage::after { animation: none; }
  .pt-studio-bar__pulse { animation: none; }
  .pt-hero__spec-tile:hover, .pt-labbar__stats li:hover, .pt-keyfacts li:hover { transform: none; }
  .pt-stage .pt-el:hover, .pt-stage .pt-el:focus-visible { transform: none; }
}

@media print {
  .pt-hero, .pt-help, .pt-controls, .pt-scroll-hint, .pt-labbar__jump, .pt-studio-bar { display: none !important; }
  .pt-stage { background: #fff !important; border: 1px solid #ccc; }
  .pt-stage .pt-el { color: #000 !important; background: #fff !important; }
}