:root {
  --table-min-width: 720px;
  --comparison-min-width: 760px;
  --toc-top: 14px;
  --toc-scroll-offset: 104px;
  --card-lift: -3px;
  --hero-stage-height: 172px;
  --platform-icon-size: 22px;
  --preview-swatch-height: 112px;
}

.tabs {
  min-width: 0;
}

.tab-list {
  display: flex;
  width: fit-content;
  max-width: 100%;
  margin: 0 auto 28px;
  padding: 5px;
  gap: 4px;
  overflow-x: auto;
  border: 1px solid var(--color-border);
  border-radius: var(--radius-pill);
  background: var(--color-panel-recessed);
  -webkit-overflow-scrolling: touch;
}

.tab-list [role="tab"] {
  min-width: max-content;
  min-height: 40px;
  padding: 8px 17px;
  border: 0;
  border-radius: var(--radius-pill);
  background: var(--color-transparent);
  color: var(--color-text-muted);
  font-weight: 700;
}

.tab-list [role="tab"][aria-selected="true"] {
  background: var(--color-panel);
  box-shadow: var(--highlight-inner), var(--shadow-soft);
  color: var(--color-accent-dark);
}

[role="tabpanel"][hidden] {
  display: none;
}

.toc-tabs {
  position: sticky;
  top: var(--toc-top);
  z-index: 30;
  display: flex;
  max-width: 100%;
  margin-bottom: 42px;
  padding: 7px;
  gap: 4px;
  overflow-x: auto;
  border: 1px solid var(--color-border);
  border-radius: var(--radius-panel);
  background: var(--color-panel);
  box-shadow: var(--highlight-inner), var(--shadow-soft);
  scrollbar-width: thin;
  -webkit-overflow-scrolling: touch;
}

.toc-tabs a {
  display: inline-flex;
  min-width: max-content;
  min-height: 38px;
  align-items: center;
  padding: 7px 13px;
  border-radius: var(--radius-small);
  color: var(--color-text-muted);
  font-size: 14px;
  font-weight: 650;
}

.toc-tabs a:hover,
.toc-tabs a.is-active,
.toc-tabs a[aria-current="true"] {
  background: var(--color-panel-recessed);
  color: var(--color-accent-dark);
}

body:has(.toc-tabs) section[id] {
  scroll-margin-top: var(--toc-scroll-offset);
}

.faq-list {
  display: grid;
  gap: 12px;
}

.faq-item {
  border: 1px solid var(--color-border);
  border-radius: var(--radius-panel);
  background: var(--color-panel);
  box-shadow: var(--highlight-inner);
}

.faq-item summary {
  position: relative;
  min-height: 58px;
  padding: 17px 54px 17px 19px;
  list-style: none;
  color: var(--color-text);
  font-weight: 750;
}

.faq-item summary::-webkit-details-marker {
  display: none;
}

.faq-item summary::after {
  content: "+";
  position: absolute;
  top: 50%;
  right: 19px;
  display: grid;
  width: 26px;
  height: 26px;
  transform: translateY(-50%);
  place-items: center;
  border-radius: var(--radius-round);
  background: var(--color-panel-recessed);
  color: var(--color-accent-dark);
  font-family: var(--font-mono);
}

.faq-item[open] summary::after {
  content: "−";
}

.faq-item__answer {
  padding: 0 19px 18px;
  color: var(--color-text-muted);
}

.faq-item__answer > :last-child {
  margin-bottom: 0;
}

.pricing-grid {
  display: grid;
  grid-template-columns: repeat(3, minmax(0, 1fr));
  gap: 20px;
}

.price-card {
  position: relative;
  display: flex;
  min-width: 0;
  min-height: 100%;
  padding: 26px;
  flex-direction: column;
  border: 1px solid var(--color-border);
  border-radius: var(--radius-panel);
  background: var(--color-panel);
  box-shadow: var(--highlight-inner), var(--shadow-soft);
  transition: transform var(--transition-fast), box-shadow var(--transition-fast);
}

.price-card:hover {
  transform: translateY(var(--card-lift));
  box-shadow: var(--highlight-inner), var(--shadow-panel);
}

.price-card--featured,
.price-card[aria-current="true"] {
  border-color: var(--color-accent-45);
  box-shadow: var(--highlight-inner), 0 24px 52px var(--color-accent-14);
}

.price-card__badge {
  position: absolute;
  top: 16px;
  right: 16px;
}

.price-card__period {
  margin-bottom: 8px;
  color: var(--color-text-muted);
  font-family: var(--font-mono);
  font-size: 12px;
  letter-spacing: .07em;
}

.price-card__price {
  display: flex;
  margin: 18px 0;
  align-items: baseline;
  gap: 7px;
}

.price-card__amount {
  font-family: var(--font-display);
  font-size: 44px;
  font-weight: 900;
  letter-spacing: -.03em;
  line-height: 1;
}

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

.price-card__features {
  display: grid;
  margin-bottom: 26px;
  padding: 0;
  gap: 9px;
  list-style: none;
  color: var(--color-text-muted);
}

.price-card__features li {
  position: relative;
  padding-left: 22px;
}

.price-card__features li::before {
  content: "✓";
  position: absolute;
  left: 0;
  color: var(--color-success);
  font-weight: 800;
}

.price-card .btn {
  width: 100%;
  margin-top: auto;
}

.table-scroll {
  width: 100%;
  max-width: 100%;
  overflow-x: auto;
  border: 1px solid var(--color-border);
  border-radius: var(--radius-panel);
  background: var(--color-panel);
  box-shadow: var(--highlight-inner), var(--shadow-soft);
  -webkit-overflow-scrolling: touch;
}

.data-table,
.route-table,
.comparison-table {
  width: 100%;
  min-width: var(--table-min-width);
  border-collapse: collapse;
  background: var(--color-panel);
}

.comparison-table {
  min-width: var(--comparison-min-width);
}

.data-table th,
.data-table td,
.route-table th,
.route-table td,
.comparison-table th,
.comparison-table td {
  padding: 15px 17px;
  border-bottom: 1px solid var(--color-border);
  text-align: left;
  vertical-align: middle;
}

.data-table th,
.route-table th,
.comparison-table th {
  background: var(--color-panel-recessed);
  color: var(--color-text);
  font-family: var(--font-mono);
  font-size: 12px;
  font-weight: 800;
  letter-spacing: .04em;
}

.data-table td:first-child,
.route-table td:first-child,
.comparison-table td:first-child {
  color: var(--color-text);
  font-weight: 700;
}

.data-table tr:last-child td,
.route-table tr:last-child td,
.comparison-table tr:last-child td {
  border-bottom: 0;
}

.route-group td {
  background: var(--color-accent-06);
  color: var(--color-accent-dark);
  font-family: var(--font-mono);
  font-size: 12px;
  font-weight: 800;
  letter-spacing: .07em;
}

.stream-support {
  display: inline-flex;
  min-height: 26px;
  align-items: center;
  gap: 6px;
  color: var(--color-success);
  font-weight: 700;
}

.prose > .data-table {
  display: block;
  width: 100%;
  max-width: 100%;
  min-width: 0;
  overflow-x: auto;
  -webkit-overflow-scrolling: touch;
}

.platform-grid {
  display: grid;
  grid-template-columns: repeat(5, minmax(0, 1fr));
  gap: 14px;
}

.platform-card {
  display: flex;
  min-width: 0;
  min-height: 188px;
  padding: 22px 16px 17px;
  align-items: center;
  flex-direction: column;
  text-align: center;
  border: 1px solid var(--color-border);
  border-radius: var(--radius-panel);
  background: var(--color-panel);
  box-shadow: var(--highlight-inner), var(--shadow-soft);
  transition: transform var(--transition-fast);
}

.platform-card:hover {
  transform: translateY(var(--card-lift));
}

.platform-card__icon {
  display: grid;
  width: 56px;
  height: 56px;
  margin-bottom: 15px;
  flex: 0 0 auto;
  place-items: center;
  border-radius: var(--radius-panel);
  background: var(--color-panel-recessed);
  color: var(--color-accent-dark);
}

.platform-card__icon svg {
  width: 28px;
  height: 28px;
}

.platform-card__name {
  margin-bottom: 13px;
  font-weight: 800;
}

.platform-card .btn {
  width: 100%;
  margin-top: auto;
}

.article-grid {
  display: grid;
  grid-template-columns: repeat(3, minmax(0, 1fr));
  gap: 20px;
}

.article-card {
  display: flex;
  min-width: 0;
  min-height: 100%;
  padding: 23px;
  flex-direction: column;
  border: 1px solid var(--color-border);
  border-radius: var(--radius-panel);
  background: var(--color-panel);
  box-shadow: var(--highlight-inner), var(--shadow-soft);
  transition: transform var(--transition-fast);
}

.article-card:hover {
  transform: translateY(var(--card-lift));
}

.article-card__meta {
  display: flex;
  margin-bottom: 16px;
  align-items: center;
  justify-content: space-between;
  gap: 10px;
  color: var(--color-text-muted);
  font-family: var(--font-mono);
  font-size: 11px;
}

.article-card h3 {
  font-size: 21px;
}

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

.article-card__link {
  display: inline-flex;
  min-height: 32px;
  margin-top: auto;
  align-items: center;
  color: var(--color-accent-dark);
  font-weight: 750;
}

.callout {
  position: relative;
  margin: 28px 0;
  padding: 20px 22px 20px 28px;
  overflow-x: clip;
  border: 1px solid var(--color-border);
  border-radius: var(--radius-panel);
  background: var(--color-panel-recessed);
  box-shadow: var(--highlight-inner);
}

.callout::before {
  content: "";
  position: absolute;
  inset: 12px auto 12px 0;
  width: 4px;
  border-radius: 0 var(--radius-small) var(--radius-small) 0;
  background: linear-gradient(180deg, var(--color-accent-bright), var(--color-accent));
}

.callout__title {
  margin-bottom: 6px;
  color: var(--color-accent-dark);
  font-weight: 800;
}

.callout > :last-child {
  margin-bottom: 0;
}

.article-promo {
  display: grid;
  margin-top: 54px;
  padding: clamp(25px, 5vw, 44px);
  grid-template-columns: 1fr auto;
  align-items: center;
  gap: 28px;
  overflow-x: clip;
  border: 1px solid var(--color-accent-22);
  border-radius: var(--radius-panel);
  background: linear-gradient(135deg, var(--color-panel), var(--color-panel-recessed));
  box-shadow: var(--highlight-inner), var(--shadow-panel);
}

.article-promo__brand {
  margin-bottom: 7px;
  font-family: var(--font-display);
  font-size: 25px;
  font-weight: 900;
}

.article-promo p {
  margin-bottom: 0;
  color: var(--color-text-muted);
}

.float-cta {
  position: fixed;
  right: 24px;
  bottom: calc(24px + env(safe-area-inset-bottom, 0px));
  z-index: 50;
  display: inline-flex;
  min-height: 44px;
  align-items: center;
  justify-content: center;
  gap: 8px;
  padding: 9px 18px;
  border-radius: var(--radius-pill);
  background: linear-gradient(180deg, var(--color-accent-bright), var(--color-accent));
  box-shadow: inset 0 1px 0 var(--color-white-35), 0 12px 26px var(--color-accent-22);
  color: var(--color-white);
  font-size: 14px;
  font-weight: 750;
}

.float-cta svg {
  width: 14px;
  height: 14px;
}

body:has(.float-cta)::after {
  content: "";
  display: block;
  height: calc(88px + env(safe-area-inset-bottom, 0px));
}

.hero {
  position: relative;
  max-width: 100%;
  padding: 34px var(--gutter) 24px;
  overflow-x: clip;
  background: linear-gradient(180deg, var(--color-accent-06), var(--color-accent-02) 46%, var(--color-transparent) 78%);
}

.hero__inner {
  position: relative;
  z-index: 2;
  display: flex;
  max-width: var(--content-width);
  margin: 0 auto;
  align-items: center;
  flex-direction: column;
  text-align: center;
}

.hero .eyebrow {
  min-height: 26px;
}

.hero-title {
  max-width: 980px;
  margin-top: 18px;
  margin-bottom: 0;
}

.hero-subtitle {
  max-width: 840px;
  margin: 16px auto 0;
  color: var(--color-text-muted);
  font-size: 18px;
  line-height: 1.6;
}

.hero-subtitle strong {
  color: var(--color-text);
}

.hero-actions {
  display: flex;
  margin-top: 22px;
  align-items: center;
  justify-content: center;
  gap: 12px;
}

.hero-facts {
  display: flex;
  margin-top: 18px;
  flex-wrap: wrap;
  justify-content: center;
  gap: 8px;
}

.hero-facts .chip {
  color: var(--color-text);
  font-family: var(--font-body);
}

.hero-facts .num {
  color: var(--color-accent-dark);
  font-family: var(--font-mono);
  font-weight: 800;
}

.hero-support {
  display: flex;
  margin-top: 14px;
  align-items: center;
  flex-wrap: wrap;
  justify-content: center;
  gap: 22px;
}

.hero-support__label {
  margin-right: 3px;
  color: var(--color-text-muted);
  font-family: var(--font-mono);
  font-size: 11px;
  letter-spacing: .06em;
}

.platform-row,
.flag-row {
  display: flex;
  align-items: center;
  flex-wrap: wrap;
  justify-content: center;
  gap: 16px;
}

.platform-row span,
.flag-row span {
  display: inline-flex;
  min-width: 0;
  align-items: center;
  gap: 6px;
  font-size: 13px;
  font-weight: 600;
  white-space: nowrap;
}

.platform-row svg {
  width: 16px;
  height: 16px;
  flex: 0 0 auto;
}

.flag-row svg {
  width: 20px;
  height: 14px;
  flex: 0 0 auto;
  overflow: hidden;
  border-radius: 3px;
  box-shadow: 0 0 0 1px var(--color-border);
}

.hero-support__divider {
  width: 1px;
  height: 18px;
  background: var(--color-border);
}

.flag-red {
  fill: var(--color-flag-red);
}

.flag-blue {
  fill: var(--color-flag-blue);
}

.flag-green {
  fill: var(--color-flag-green);
}

.flag-gold {
  fill: var(--color-flag-gold);
}

.flag-white {
  fill: var(--color-white);
}

.hero-device {
  position: relative;
  width: 100%;
  margin-top: 26px;
}

.route-cards {
  display: grid;
  grid-template-columns: repeat(3, minmax(0, 1fr));
  gap: 20px;
}

.route-card {
  position: relative;
  min-width: 0;
  padding: 18px 20px;
  overflow: hidden;
  text-align: left;
  border: 1px solid var(--color-border);
  border-radius: var(--radius-panel);
  background: var(--color-panel);
  box-shadow: var(--highlight-inner), var(--shadow-panel);
}

.route-card::after {
  content: "";
  position: absolute;
  inset: auto 0 0;
  height: 1px;
  background: linear-gradient(90deg, var(--color-transparent), var(--color-accent-22), var(--color-transparent));
}

.route-card__head {
  display: flex;
  align-items: flex-start;
  justify-content: space-between;
  gap: 12px;
}

.route-card__title {
  font-family: var(--font-display);
  font-size: 16px;
  font-weight: 850;
}

.route-card__desc {
  margin: 2px 0 0;
  color: var(--color-text-muted);
  font-size: 12px;
}

.route-tag {
  display: inline-flex;
  min-height: 26px;
  flex: 0 0 auto;
  align-items: center;
  padding: 4px 10px;
  border-radius: var(--radius-small);
  background: var(--color-accent-10);
  color: var(--color-accent-dark);
  font-family: var(--font-mono);
  font-size: 11px;
  font-weight: 800;
  letter-spacing: .04em;
  white-space: nowrap;
}

.cylinder-stage {
  position: relative;
  display: flex;
  height: var(--hero-stage-height);
  padding-bottom: 22px;
  align-items: flex-end;
  justify-content: center;
}

.cylinder-stage::before,
.cylinder-stage::after {
  content: "";
  position: absolute;
  bottom: 6px;
  left: 50%;
  width: min(200px, 72%);
  height: 50px;
  transform: translateX(-50%);
  border: 1px solid var(--color-accent-22);
  border-radius: var(--radius-round);
  pointer-events: none;
}

.cylinder-stage::after {
  bottom: -2px;
  width: min(260px, 92%);
  height: 66px;
  border-color: var(--color-accent-12);
}

.cylinder-stack {
  position: relative;
  display: flex;
  align-items: center;
  flex-direction: column-reverse;
}

.cylinder-stack::before {
  content: "";
  position: absolute;
  bottom: -6px;
  left: 50%;
  z-index: 0;
  width: 150px;
  max-width: 90%;
  height: 30px;
  transform: translateX(-50%);
  border-radius: var(--radius-round);
  background: var(--color-accent-14);
  filter: blur(6px);
}

.cylinder-disc {
  position: relative;
  z-index: 1;
  width: 124px;
  height: 16px;
  border-right: 1px solid var(--color-accent-45);
  border-bottom: 1px solid var(--color-accent);
  border-left: 1px solid var(--color-accent-45);
  border-radius: 0 0 62px 62px / 0 0 10px 10px;
  background: linear-gradient(180deg, var(--color-panel), var(--color-cylinder-side-b));
}

.cylinder-disc::before {
  content: "";
  position: absolute;
  top: -10px;
  right: -1px;
  left: -1px;
  height: 20px;
  border: 1px solid var(--color-accent-55);
  border-radius: var(--radius-round);
  background: linear-gradient(180deg, var(--color-cylinder-top-a), var(--color-cylinder-top-b));
  box-shadow: inset 0 1px 0 var(--color-white-70);
}

.cylinder-disc:first-child {
  border-bottom-width: 2px;
}

.lock-tile {
  position: relative;
  z-index: 3;
  display: flex;
  width: 42px;
  height: 42px;
  margin-bottom: 6px;
  align-items: center;
  justify-content: center;
  border-radius: var(--radius-panel);
  background: linear-gradient(160deg, var(--color-accent-bright), var(--color-accent) 60%, var(--color-accent-dark));
  box-shadow: inset 0 0 0 1px var(--color-white-35), 0 10px 20px var(--color-accent-22);
  animation: tile-float 6s ease-in-out infinite;
}

.lock-tile svg {
  width: 20px;
  height: 20px;
  color: var(--color-white);
}

.lock-tile::after {
  content: "";
  position: absolute;
  bottom: -10px;
  left: 50%;
  width: 36px;
  height: 8px;
  transform: translateX(-50%);
  border-radius: var(--radius-round);
  background: var(--color-accent-22);
  filter: blur(3px);
}

.route-meta {
  display: grid;
  margin-top: 4px;
  grid-template-columns: auto 1fr;
  align-items: center;
  gap: 8px 10px;
}

.route-meta__key {
  color: var(--color-text-muted);
  font-family: var(--font-mono);
  font-size: 11px;
  letter-spacing: .06em;
}

.route-meta__value {
  display: flex;
  min-width: 0;
  flex-wrap: wrap;
  gap: 6px;
}

.city-chip,
.protocol-chip {
  display: inline-flex;
  min-height: 24px;
  max-width: 100%;
  align-items: center;
  padding: 3px 9px;
  overflow: hidden;
  border-radius: var(--radius-small);
  font-size: 12px;
  font-weight: 650;
}

.city-chip {
  gap: 5px;
  background: var(--color-panel-recessed);
}

.city-chip i {
  width: 5px;
  height: 5px;
  flex: 0 0 auto;
  border-radius: var(--radius-round);
  background: var(--color-success);
}

.protocol-chip {
  border: 1px solid var(--color-border);
  background: var(--color-white);
  color: var(--color-accent-dark);
  font-family: var(--font-mono);
}

.device-float {
  position: absolute;
  z-index: 4;
  display: inline-flex;
  min-height: 32px;
  align-items: center;
  gap: 7px;
  padding: 5px 13px;
  border: 1px solid var(--color-border);
  border-radius: var(--radius-pill);
  background: var(--color-panel);
  box-shadow: var(--highlight-inner), 0 12px 26px var(--color-accent-14);
  font-size: 13px;
  font-weight: 650;
  white-space: nowrap;
  animation: device-float 7s ease-in-out infinite;
}

.device-float--top {
  top: -16px;
  left: -14px;
}

.device-float--bottom {
  right: -12px;
  bottom: -14px;
  color: var(--color-accent-dark);
  font-family: var(--font-mono);
  animation-duration: 8s;
  animation-direction: reverse;
}

.particles {
  position: absolute;
  inset: 0;
  z-index: 1;
  overflow: hidden;
  pointer-events: none;
}

.particle {
  position: absolute;
  width: 3px;
  height: 11px;
  border-radius: 2px;
  background: var(--color-accent);
  opacity: .55;
  animation: particle-drift 24s ease-in-out infinite;
}

.particle:nth-child(3n) {
  width: 5px;
  height: 5px;
}

.particle:nth-child(4n) {
  opacity: .45;
}

.particle:nth-child(5n) {
  opacity: .7;
}

.particle:nth-child(1) { left: 4%; top: 10%; rotate: 25deg; }
.particle:nth-child(2) { left: 9%; top: 22%; rotate: -40deg; }
.particle:nth-child(3) { left: 14%; top: 6%; rotate: 15deg; }
.particle:nth-child(4) { left: 6%; top: 34%; rotate: 70deg; }
.particle:nth-child(5) { left: 12%; top: 44%; rotate: -20deg; }
.particle:nth-child(6) { left: 3%; top: 52%; rotate: 50deg; }
.particle:nth-child(7) { left: 16%; top: 28%; rotate: -65deg; }
.particle:nth-child(8) { left: 5%; top: 60%; rotate: 30deg; }
.particle:nth-child(9) { left: 13%; top: 16%; rotate: 10deg; }
.particle:nth-child(10) { left: 2%; top: 70%; rotate: -30deg; }
.particle:nth-child(11) { left: 10%; top: 38%; rotate: 80deg; }
.particle:nth-child(12) { left: 7%; top: 48%; rotate: -15deg; }
.particle:nth-child(13) { left: 17%; top: 12%; rotate: 45deg; }
.particle:nth-child(14) { left: 11%; top: 30%; rotate: -55deg; }
.particle:nth-child(15) { left: 4%; top: 42%; rotate: 20deg; }
.particle:nth-child(16) { left: 15%; top: 40%; rotate: -75deg; }
.particle:nth-child(17) { left: 6%; top: 20%; rotate: 60deg; }
.particle:nth-child(18) { left: 2%; top: 80%; rotate: -10deg; }
.particle:nth-child(19) { left: 9%; top: 4%; rotate: 35deg; }
.particle:nth-child(20) { left: 5%; top: 76%; rotate: -45deg; }
.particle:nth-child(21) { left: 96%; top: 10%; rotate: -25deg; }
.particle:nth-child(22) { left: 91%; top: 22%; rotate: 40deg; }
.particle:nth-child(23) { left: 86%; top: 6%; rotate: -15deg; }
.particle:nth-child(24) { left: 94%; top: 34%; rotate: -70deg; }
.particle:nth-child(25) { left: 88%; top: 44%; rotate: 20deg; }
.particle:nth-child(26) { left: 97%; top: 52%; rotate: -50deg; }
.particle:nth-child(27) { left: 84%; top: 28%; rotate: 65deg; }
.particle:nth-child(28) { left: 95%; top: 60%; rotate: -30deg; }
.particle:nth-child(29) { left: 87%; top: 16%; rotate: -10deg; }
.particle:nth-child(30) { left: 98%; top: 70%; rotate: 30deg; }
.particle:nth-child(31) { left: 90%; top: 38%; rotate: -80deg; }
.particle:nth-child(32) { left: 93%; top: 48%; rotate: 15deg; }
.particle:nth-child(33) { left: 83%; top: 12%; rotate: -45deg; }
.particle:nth-child(34) { left: 89%; top: 30%; rotate: 55deg; }
.particle:nth-child(35) { left: 96%; top: 42%; rotate: -20deg; }
.particle:nth-child(36) { left: 85%; top: 40%; rotate: 75deg; }
.particle:nth-child(37) { left: 94%; top: 20%; rotate: -60deg; }
.particle:nth-child(38) { left: 98%; top: 80%; rotate: 10deg; }
.particle:nth-child(39) { left: 91%; top: 4%; rotate: -35deg; }
.particle:nth-child(40) { left: 95%; top: 76%; rotate: 45deg; }

@keyframes particle-drift {
  0%,
  100% { transform: translate(0, 0); }
  35% { transform: translate(8px, -12px); }
  70% { transform: translate(-6px, 8px); }
}

@keyframes tile-float {
  0%,
  100% { transform: translateY(0); }
  50% { transform: translateY(-4px); }
}

@keyframes device-float {
  0%,
  100% { transform: translateY(0); }
  50% { transform: translateY(-3px); }
}

.preview-main {
  padding-bottom: 80px;
}

.preview-section {
  padding-top: 88px;
  padding-bottom: 88px;
  border-top: 1px solid var(--color-border);
}

.preview-heading {
  max-width: 740px;
  margin-bottom: 38px;
}

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

.preview-grid {
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: 20px;
}

.preview-stack {
  display: grid;
  gap: 20px;
}

.swatch-grid {
  display: grid;
  grid-template-columns: repeat(4, minmax(0, 1fr));
  gap: 14px;
}

.swatch {
  min-width: 0;
  overflow: hidden;
  border: 1px solid var(--color-border);
  border-radius: var(--radius-panel);
  background: var(--color-panel);
  box-shadow: var(--highlight-inner), var(--shadow-soft);
}

.swatch__color {
  height: var(--preview-swatch-height);
}

.swatch__color--bg { background: var(--color-bg); }
.swatch__color--panel { background: var(--color-panel); }
.swatch__color--recessed { background: var(--color-panel-recessed); }
.swatch__color--border { background: var(--color-border); }
.swatch__color--accent { background: var(--color-accent); }
.swatch__color--accent-dark { background: var(--color-accent-dark); }
.swatch__color--text { background: var(--color-text); }
.swatch__color--muted { background: var(--color-text-muted); }
.swatch__color--success { background: var(--color-success); }
.swatch__color--warning { background: var(--color-warning); }
.swatch__color--error { background: var(--color-error); }

.swatch__label {
  padding: 13px;
  font-family: var(--font-mono);
  font-size: 12px;
}

.type-sample {
  padding: 28px;
}

.type-sample__display {
  margin-bottom: 18px;
  font-family: var(--font-display);
  font-size: clamp(38px, 6vw, 64px);
  font-weight: 900;
  letter-spacing: -.03em;
  line-height: 1.08;
}

.type-sample__body {
  max-width: 680px;
  color: var(--color-text-muted);
  font-size: 18px;
}

.type-sample__mono {
  color: var(--color-accent-dark);
  font-family: var(--font-mono);
  font-size: 13px;
  letter-spacing: .06em;
}

.button-showcase {
  display: flex;
  padding: 25px;
  flex-wrap: wrap;
  align-items: center;
  gap: 12px;
}

.button-showcase__disabled {
  opacity: .48;
  pointer-events: none;
}

.static-footer {
  margin-top: 0;
}

.icon-grid-demo {
  display: grid;
  grid-template-columns: repeat(7, minmax(0, 1fr));
  gap: 9px;
}

.icon-cell {
  display: grid;
  min-width: 0;
  aspect-ratio: 1;
  place-items: center;
  overflow: hidden;
  border: 1px solid var(--color-border);
  border-radius: var(--radius-panel);
  background: var(--color-panel);
  box-shadow: var(--highlight-inner), var(--shadow-soft);
  color: var(--color-accent-dark);
  font-family: var(--font-mono);
  font-size: 10px;
  text-align: center;
  transition: transform var(--transition-fast);
}

.icon-cell:hover {
  transform: translateY(var(--card-lift));
}

.icon-cell svg {
  width: 24px;
  height: 24px;
}

@media (max-width: 900px) {
  .pricing-grid,
  .article-grid {
    grid-template-columns: 1fr;
  }

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

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

  .route-cards {
    grid-template-columns: 1fr;
  }

  .cylinder-stage {
    height: 150px;
  }
}

@media (max-width: 768px) {
  .hero {
    padding-top: 28px;
  }

  .hero-subtitle {
    font-size: 16px;
  }

  .hero-support__divider {
    display: none;
  }

  .particle:nth-child(2n) {
    display: none;
  }

  .device-float--top {
    top: -14px;
    left: 8px;
  }

  .device-float--bottom {
    right: 8px;
    bottom: -12px;
  }

  .article-promo {
    grid-template-columns: 1fr;
  }

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

@media (max-width: 640px) {
  .hero-actions {
    width: 100%;
    align-items: stretch;
    flex-direction: column;
  }

  .hero-actions .btn {
    width: 100%;
  }

  .platform-row,
  .flag-row {
    gap: 10px;
  }

  .route-card {
    padding-inline: 16px;
  }

  .route-card__head {
    align-items: flex-start;
    flex-direction: column-reverse;
  }

  .price-card {
    padding: 22px 18px;
  }

  .platform-grid,
  .preview-grid,
  .swatch-grid {
    grid-template-columns: 1fr;
  }

  .float-cta {
    right: 16px;
    bottom: calc(16px + env(safe-area-inset-bottom, 0px));
  }

  .preview-section {
    padding-top: 64px;
    padding-bottom: 64px;
  }

  .toc-tabs {
    border-radius: var(--radius-small);
  }
}

@media (prefers-reduced-motion: reduce) {
  .particle,
  .lock-tile,
  .device-float {
    animation: none;
  }
}