:root {
  --hero-glow-cyan: rgba(18, 196, 222, 0.055);
  --hero-glow-pink: rgba(224, 24, 111, 0.075);
  --price-highlight: rgba(18, 196, 222, 0.08);
  --table-stripe: rgba(246, 247, 249, 0.72);
  --table-head: #101625;
  --table-first: #101625;
  --preview-grid-line: rgba(228, 231, 236, 0.72);
  --preview-deep-grid: rgba(255, 255, 255, 0.045);
  --signal-glow: rgba(224, 24, 111, 0.42);
  --trail-glow: rgba(255, 74, 38, 0.26);
}

.hero-wrap {
  width: 100%;
  max-width: var(--page-max);
  margin-inline: auto;
  padding: 14px 16px 0;
  overflow-x: clip;
}

.hero-card {
  position: relative;
  display: flex;
  min-width: 0;
  align-items: center;
  gap: 40px;
  overflow: hidden;
  padding: 48px 56px;
  border-radius: var(--radius-card);
  background:
    radial-gradient(620px 320px at 74% 22%, var(--hero-glow-cyan), var(--color-transparent) 70%),
    radial-gradient(560px 300px at 82% 78%, var(--hero-glow-pink), var(--color-transparent) 70%),
    var(--color-deep);
}

.hero-copy {
  position: relative;
  z-index: 2;
  flex: 0 0 452px;
  min-width: 0;
}

.hero-badge {
  display: inline-flex;
  max-width: 100%;
  align-items: center;
  gap: 8px;
  padding: 6px 14px;
  overflow: hidden;
  border: 1px solid var(--color-hero-line);
  border-radius: var(--radius-pill);
  background: var(--color-hero-chip);
  color: var(--color-hero-muted);
  font-size: 12.5px;
  font-weight: 550;
  letter-spacing: 0.06em;
  text-overflow: ellipsis;
  white-space: nowrap;
}

.hero-card h1 {
  margin-top: 22px;
  margin-bottom: 0;
  color: var(--color-hero-text);
  font-size: clamp(52px, 4.6vw, 60px);
}

.text-gradient,
.h1-grad {
  background: linear-gradient(96deg, var(--color-accent) 8%, var(--color-accent-end) 88%);
  background-clip: text;
  color: var(--color-transparent);
  -webkit-background-clip: text;
}

.hero-actions {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  gap: 14px;
  margin-top: 28px;
}

.hero-actions .btn {
  padding-inline: 28px;
}

.hero-sub {
  max-width: 430px;
  margin-top: 22px;
  margin-bottom: 0;
  color: var(--color-hero-muted);
  font-size: 15px;
  line-height: 1.75;
}

.hero-sub strong {
  color: var(--color-cyan);
}

.hero-trust {
  display: flex;
  flex-wrap: wrap;
  gap: 8px 20px;
  margin: 22px 0 0;
  padding: 20px 0 0;
  border-top: 1px solid var(--color-hero-line);
  color: var(--color-hero-faint);
  font-size: 13px;
  list-style: none;
}

.hero-trust li {
  display: inline-flex;
  min-width: 0;
  align-items: flex-start;
  gap: 6px;
}

.hero-trust svg {
  width: 13px;
  height: 13px;
  flex-shrink: 0;
  margin-top: 4px;
}

.hero-visual {
  display: flex;
  min-width: 0;
  flex: 1;
  justify-content: flex-end;
}

.hero-visual svg,
.port-svg {
  width: 100%;
  max-width: 718px;
  height: auto;
}

.platform-band {
  display: flex;
  width: 100%;
  max-width: var(--page-max);
  align-items: center;
  justify-content: space-between;
  gap: 18px;
  margin-inline: auto;
  padding: 20px 16px;
}

.platform-list,
.fact-list,
.flag-list {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  gap: 9px;
  padding: 0;
  list-style: none;
}

.platform-label {
  color: var(--color-text-muted);
  font-size: 12px;
  font-weight: 700;
  letter-spacing: 0.14em;
}

.platform-chip,
.flag-chip {
  display: inline-flex;
  min-width: 0;
  align-items: center;
  gap: 8px;
  padding: 7px 13px;
  border: 1px solid var(--color-border);
  border-radius: var(--radius-pill);
  background: var(--color-page);
  color: var(--color-text-muted);
  font-size: 13px;
  font-weight: 560;
}

.platform-chip svg,
.flag-chip svg {
  width: 16px;
  height: 16px;
  flex-shrink: 0;
}

.fact-pill {
  padding: 6px 12px;
  border: 1px solid var(--color-cyan);
  color: var(--color-text);
  font-family: var(--font-mono);
  font-size: 11px;
}

.bento-grid {
  display: grid;
  grid-template-columns: minmax(0, 1.65fr) minmax(220px, 0.75fr);
  gap: 12px;
}

.bento-main {
  grid-row: span 2;
}

.bento-cell {
  min-width: 0;
  padding: 22px;
  border: 1px solid var(--color-deep-line);
  border-radius: var(--radius-lg);
  background: var(--color-deep-raised);
  color: var(--color-hero-muted);
  transition: transform var(--transition-fast), border-color var(--transition-fast);
}

.bento-cell:hover {
  border-color: var(--color-cyan);
  transform: translateY(-2px);
}

.bento-cell strong {
  display: block;
  margin-bottom: 5px;
  color: var(--color-white);
}

.tabs {
  min-width: 0;
}

.tab-list {
  display: flex;
  max-width: 100%;
  gap: 5px;
  overflow-x: auto;
  padding: 5px;
  border: 1px solid var(--color-border);
  border-radius: var(--radius-md);
  background: var(--color-panel);
  scrollbar-width: thin;
  -webkit-overflow-scrolling: touch;
}

.tab-list [role="tab"] {
  min-height: 42px;
  flex: 0 0 auto;
  padding: 8px 16px;
  border-radius: var(--radius-sm);
  background: var(--color-transparent);
  color: var(--color-text-muted);
  font-weight: 700;
  white-space: nowrap;
}

.tab-list [role="tab"]:hover {
  color: var(--color-text);
}

.tab-list [role="tab"][aria-selected="true"],
.tab-list [role="tab"].is-active {
  background: var(--color-page);
  color: var(--color-text);
  box-shadow: 0 1px 4px var(--color-shadow);
}

.tab-panel {
  padding-top: 24px;
}

.tab-panel[hidden] {
  display: none;
}

.toc-tabs {
  position: sticky;
  top: var(--toc-top);
  z-index: 45;
  display: flex;
  max-width: 100%;
  gap: 6px;
  overflow-x: auto;
  overscroll-behavior-x: contain;
  padding: 7px;
  border: 1px solid var(--color-border);
  border-radius: var(--radius-md);
  background: var(--color-page);
  box-shadow: 0 4px 16px var(--color-shadow);
  scrollbar-width: thin;
  -webkit-overflow-scrolling: touch;
}

.toc-tabs a {
  display: inline-flex;
  min-height: 38px;
  flex: 0 0 auto;
  align-items: center;
  padding: 7px 12px;
  border-radius: var(--radius-sm);
  color: var(--color-text-muted);
  font-size: 13px;
  font-weight: 650;
  white-space: nowrap;
}

.toc-tabs a:hover,
.toc-tabs a.is-current {
  background: var(--color-deep);
  color: var(--color-white);
}

.faq-list {
  display: grid;
  gap: 9px;
}

.faq-item {
  border: 1px solid var(--color-border);
  border-radius: var(--radius-md);
  background: var(--color-page);
}

.faq-item summary {
  position: relative;
  min-height: 54px;
  padding: 15px 50px 15px 18px;
  font-weight: 750;
  list-style: none;
}

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

.faq-item summary::after {
  position: absolute;
  top: 50%;
  right: 18px;
  content: '+';
  color: var(--color-accent-dark);
  font-family: var(--font-mono);
  font-size: 20px;
  transform: translateY(-50%);
  transition: transform var(--transition-fast);
}

.faq-item[open] summary::after {
  transform: translateY(-50%) rotate(45deg);
}

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

.pricing-grid {
  display: grid;
  grid-template-columns: repeat(3, minmax(0, 1fr));
  gap: 14px;
}

.price-card {
  position: relative;
  display: flex;
  min-width: 0;
  flex-direction: column;
  padding: 26px;
  border: 1px solid var(--color-border);
  border-radius: var(--radius-lg);
  background: var(--color-page);
}

.price-card.is-featured {
  border-color: var(--color-cyan);
  background: linear-gradient(180deg, var(--price-highlight), var(--color-page) 45%);
  box-shadow: var(--shadow-card);
}

.price-card__badge {
  position: absolute;
  top: -13px;
  right: 20px;
}

.price-card__period {
  color: var(--color-text-muted);
  font-family: var(--font-mono);
  font-size: 12px;
}

.price-card__price {
  margin: 18px 0 8px;
  font-family: var(--font-display);
  font-size: 38px;
  font-weight: 900;
  line-height: 1;
}

.price-card__price small {
  color: var(--color-text-muted);
  font-size: 13px;
  font-weight: 600;
}

.price-card__features {
  display: grid;
  gap: 9px;
  margin: 20px 0 24px;
  padding: 18px 0 0;
  border-top: 1px solid var(--color-border);
  color: var(--color-text-muted);
  list-style: none;
}

.price-card__features li {
  position: relative;
  padding-left: 19px;
}

.price-card__features li::before {
  position: absolute;
  top: 0;
  left: 0;
  content: '✓';
  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-md);
  -webkit-overflow-scrolling: touch;
}

.data-table,
.route-table,
.compare-table {
  width: 100%;
  min-width: 680px;
  background: var(--color-page);
}

.data-table th,
.data-table td,
.route-table th,
.route-table td,
.compare-table th,
.compare-table td {
  padding: 13px 15px;
  border-bottom: 1px solid var(--color-border);
  text-align: left;
  vertical-align: top;
}

.data-table th,
.route-table th,
.compare-table th {
  background: var(--color-panel);
  color: var(--table-head);
  font-size: 12px;
  font-weight: 800;
  letter-spacing: 0.025em;
}

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

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

.data-table tbody tr:nth-child(even),
.route-table tbody tr:nth-child(even),
.compare-table tbody tr:nth-child(even) {
  background: var(--table-stripe);
}

.route-group-row th {
  background: var(--color-deep);
  color: var(--color-white);
  font-family: var(--font-mono);
}

.platform-grid {
  display: grid;
  grid-template-columns: repeat(5, minmax(0, 1fr));
  gap: 12px;
}

.platform-card {
  display: flex;
  min-width: 0;
  flex-direction: column;
  align-items: flex-start;
  padding: 20px;
  border: 1px solid var(--color-border);
  border-radius: var(--radius-md);
  background: var(--color-page);
}

.platform-card__icon {
  display: grid;
  width: 42px;
  height: 42px;
  place-items: center;
  margin-bottom: 18px;
  border-radius: var(--radius-sm);
  background: var(--color-deep);
  color: var(--color-white);
}

.platform-card__icon svg {
  width: 24px;
  height: 24px;
}

.platform-card h3 {
  margin-bottom: 6px;
  font-size: 17px;
}

.platform-card p {
  flex: 1;
  color: var(--color-text-muted);
  font-size: 13px;
}

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

.article-grid {
  display: grid;
  grid-template-columns: repeat(3, minmax(0, 1fr));
  gap: 14px;
}

.article-card {
  display: flex;
  min-width: 0;
  flex-direction: column;
  padding: 22px;
  border: 1px solid var(--color-border);
  border-radius: var(--radius-md);
  background: var(--color-page);
}

.article-card__meta {
  display: flex;
  flex-wrap: wrap;
  gap: 8px;
  margin-bottom: 15px;
  color: var(--color-text-muted);
  font-family: var(--font-mono);
  font-size: 11px;
}

.article-card h3 {
  font-size: 20px;
}

.article-card p {
  flex: 1;
  color: var(--color-text-muted);
}

.article-card__link {
  color: var(--color-accent-dark);
  font-weight: 750;
}

.callout {
  position: relative;
  margin: 24px 0;
  padding: 20px 22px 20px 26px;
  overflow-x: clip;
  border: 1px solid var(--color-border);
  border-left: 4px solid var(--color-cyan);
  border-radius: var(--radius-sm);
  background: var(--color-panel);
}

.callout--warning {
  border-left-color: var(--color-warning);
  background: var(--color-warning-tint);
}

.callout--success {
  border-left-color: var(--color-success);
  background: var(--color-success-tint);
}

.callout strong {
  display: block;
  margin-bottom: 5px;
}

.article-promo {
  display: grid;
  grid-template-columns: minmax(0, 1fr) auto;
  align-items: center;
  gap: 24px;
  margin-top: 44px;
  padding: 28px;
  overflow-x: clip;
  border-radius: var(--radius-lg);
  background:
    radial-gradient(380px 180px at 85% 10%, var(--hero-glow-pink), var(--color-transparent)),
    var(--color-deep);
  color: var(--color-hero-muted);
}

.article-promo h2 {
  margin-bottom: 7px;
  color: var(--color-white);
  font-size: clamp(26px, 3vw, 36px);
}

.article-promo p {
  margin-bottom: 0;
}

.float-cta {
  position: fixed;
  right: 28px;
  bottom: calc(28px + env(safe-area-inset-bottom, 0px));
  z-index: 70;
  display: inline-flex;
  min-height: 46px;
  align-items: center;
  gap: 8px;
  padding: 11px 22px;
  border-radius: var(--radius-pill);
  background: linear-gradient(94deg, var(--color-accent), var(--color-accent-end));
  color: var(--color-white);
  font-size: 14px;
  font-weight: 800;
  box-shadow: var(--shadow-float);
}

.float-cta svg {
  width: 17px;
  height: 17px;
  flex-shrink: 0;
}

.float-cta:hover {
  filter: brightness(1.07);
}

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

.ledger-list {
  display: grid;
  margin: 0;
  padding: 0;
  list-style: none;
}

.ledger-row {
  display: grid;
  grid-template-columns: 108px minmax(0, 1fr) auto;
  min-width: 0;
  align-items: start;
  gap: 24px;
  padding: 25px 12px;
  border-bottom: 1px solid var(--color-border);
  transition: background var(--transition-fast);
}

.ledger-row:hover {
  background: var(--color-panel);
}

.ledger-code {
  display: inline-flex;
  width: max-content;
  max-width: 100%;
  padding: 5px 10px;
  overflow: hidden;
  border: 1px solid var(--color-cyan);
  border-radius: var(--radius-pill);
  color: var(--color-text);
  font-family: var(--font-mono);
  font-size: 11px;
  text-overflow: ellipsis;
  white-space: nowrap;
}

.ledger-copy {
  min-width: 0;
}

.ledger-copy h3 {
  margin-bottom: 7px;
}

.ledger-copy p {
  max-width: 820px;
  margin-bottom: 0;
  color: var(--color-text-muted);
}

.ledger-tag {
  max-width: 170px;
  padding: 5px 10px;
  overflow: hidden;
  border-radius: var(--radius-pill);
  background: var(--color-cyan-tint);
  color: var(--color-text);
  font-family: var(--font-mono);
  font-size: 11px;
  text-overflow: ellipsis;
  white-space: nowrap;
}

.preview-page {
  background: var(--color-page);
}

.preview-intro {
  padding-top: 54px;
  padding-bottom: 28px;
}

.preview-kicker {
  color: var(--color-accent-dark);
  font-family: var(--font-mono);
  font-size: 12px;
  font-weight: 750;
  letter-spacing: 0.08em;
}

.preview-section {
  padding-top: 64px;
  padding-bottom: 64px;
  border-top: 1px solid var(--color-border);
  overflow-x: clip;
}

.preview-section__head {
  max-width: 680px;
  margin-bottom: 28px;
}

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

.swatch-grid {
  display: grid;
  grid-template-columns: repeat(5, minmax(0, 1fr));
  gap: 10px;
}

.swatch {
  min-width: 0;
  overflow: hidden;
  border: 1px solid var(--color-border);
  border-radius: var(--radius-md);
  background: var(--color-page);
}

.swatch__color {
  height: 78px;
  border-bottom: 1px solid var(--color-border);
}

.swatch__meta {
  padding: 12px;
}

.swatch__meta strong,
.swatch__meta code {
  display: block;
  overflow-wrap: anywhere;
}

.swatch__meta code {
  margin-top: 3px;
  color: var(--color-text-muted);
  font-size: 10px;
}

.swatch-bg {
  background: var(--color-page);
}

.swatch-panel {
  background: var(--color-panel);
}

.swatch-deep {
  background: var(--color-deep);
}

.swatch-border {
  background: var(--color-border);
}

.swatch-accent {
  background: var(--color-accent);
}

.swatch-accent-end {
  background: var(--color-accent-end);
}

.swatch-cyan {
  background: var(--color-cyan);
}

.swatch-text {
  background: var(--color-text);
}

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

.swatch-success {
  background: var(--color-success);
}

.type-samples {
  display: grid;
  gap: 12px;
}

.type-sample {
  display: grid;
  grid-template-columns: 120px minmax(0, 1fr);
  align-items: baseline;
  gap: 18px;
  padding-bottom: 12px;
  border-bottom: 1px solid var(--color-border);
}

.type-sample code {
  color: var(--color-text-muted);
  font-size: 11px;
}

.type-display {
  font-family: var(--font-display);
  font-size: clamp(40px, 6vw, 72px);
  font-weight: 900;
  line-height: 1.1;
}

.type-heading {
  font-family: var(--font-display);
  font-size: clamp(28px, 4vw, 44px);
  font-weight: 850;
}

.type-body {
  color: var(--color-text-muted);
  font-size: 17px;
}

.type-mono {
  font-family: var(--font-mono);
  font-size: 14px;
}

.component-stack {
  display: grid;
  gap: 30px;
}

.demo-panel {
  min-width: 0;
  padding: 24px;
  border: 1px solid var(--color-border);
  border-radius: var(--radius-md);
  background: var(--color-panel);
}

.demo-panel > h3 {
  margin-bottom: 18px;
}

.preview-footer {
  margin-top: 64px;
}

.port-wall {
  fill: var(--color-wall);
}

.port-wall-line {
  fill: var(--color-wall-line);
}

.port-wall-cap {
  fill: var(--color-wall-cap);
}

.port-frame,
.port-booth,
.port-device {
  fill: var(--color-deep-raised);
  stroke: var(--color-deep-line);
  stroke-width: 1.5;
}

.port-screen {
  fill: var(--color-screen);
}

.port-pole {
  fill: var(--color-deep-line);
}

.port-ground {
  fill: none;
  stroke: var(--color-deep-line);
  stroke-width: 1.5;
  stroke-dasharray: 4 7;
}

.port-trail {
  fill: none;
  stroke: url(#previewTrail);
  stroke-linecap: round;
  stroke-width: 4.5;
}

.port-trail-glow {
  fill: none;
  stroke: url(#previewTrail);
  stroke-linecap: round;
  stroke-width: 12;
  opacity: 0.26;
  filter: url(#previewSoft);
}

.port-lamp {
  fill: var(--color-accent-end);
}

.port-lamp-glow {
  fill: var(--color-accent-end);
  opacity: 0.42;
  filter: url(#previewSoft);
  animation: signal-pulse 2.3s ease-in-out infinite alternate;
}

.port-arm {
  fill: none;
  stroke: var(--color-flag-white);
  stroke-linecap: round;
  stroke-width: 4;
}

.port-arm-stripe {
  fill: none;
  stroke: var(--color-flag-red);
  stroke-dasharray: 6 6;
  stroke-width: 4;
}

.port-name {
  fill: var(--color-hero-muted);
  font-family: var(--font-body);
  font-size: 10px;
}

.port-code {
  fill: var(--color-cyan);
  font-family: var(--font-mono);
  font-size: 7.5px;
}

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

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

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

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

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

.flow-dot {
  fill: var(--color-accent);
  filter: url(#previewSoft);
  animation: port-dot 5.4s linear infinite;
}

.flow-dot.second {
  fill: var(--color-accent-end);
  animation-delay: -2.7s;
}

@keyframes signal-pulse {
  from {
    opacity: 0.22;
  }

  to {
    opacity: 0.58;
  }
}

@keyframes port-dot {
  0% {
    opacity: 0;
    transform: translate(0, 0);
  }

  8% {
    opacity: 1;
  }

  50% {
    transform: translate(150px, -138px);
  }

  92% {
    opacity: 1;
  }

  100% {
    opacity: 0;
    transform: translate(315px, -164px);
  }
}

@media (max-width: 1100px) {
  .hero-card {
    padding: 42px 36px;
  }

  .hero-copy {
    flex-basis: 410px;
  }

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

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

@media (max-width: 880px) {
  .hero-card {
    align-items: stretch;
    flex-direction: column;
  }

  .hero-copy {
    flex-basis: auto;
  }

  .hero-visual {
    justify-content: center;
  }

  .hero-visual svg {
    max-width: 650px;
  }

  .pricing-grid,
  .article-grid {
    grid-template-columns: minmax(0, 1fr);
  }

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

  .platform-band {
    align-items: flex-start;
    flex-direction: column;
  }
}

@media (max-width: 640px) {
  .hero-wrap {
    padding-inline: var(--gutter);
  }

  .hero-card {
    gap: 20px;
    padding: 28px 20px;
    border-radius: var(--radius-lg);
  }

  .hero-card h1 {
    font-size: clamp(32px, 10vw, 40px);
  }

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

  .hero-trust {
    display: grid;
  }

  .platform-band {
    padding-inline: var(--gutter);
  }

  .platform-list,
  .fact-list,
  .flag-list {
    width: 100%;
  }

  .platform-chip,
  .flag-chip {
    max-width: 100%;
  }

  .bento-grid,
  .article-promo {
    grid-template-columns: minmax(0, 1fr);
  }

  .bento-main {
    grid-row: auto;
  }

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

  .ledger-row {
    grid-template-columns: minmax(0, 1fr);
    gap: 10px;
  }

  .ledger-tag {
    max-width: 100%;
  }

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

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

  .type-sample {
    grid-template-columns: minmax(0, 1fr);
    gap: 4px;
  }

  .port-name,
  .port-code {
    font-size: 0;
  }
}

@media (prefers-reduced-motion: reduce) {
  .flow-dot,
  .port-lamp-glow {
    animation: none;
  }

  .flow-dot {
    opacity: 1;
    transform: translate(150px, -138px);
  }
}