:root {
  --table-min-width: 760px;
  --compare-min-width: 820px;
  --platform-icon-size: 38px;
  --promo-ink: #FFFFFF;
  --promo-muted: rgba(255, 255, 255, 0.76);
  --beam-start: rgba(11, 95, 88, 0.20);
  --beam-middle: rgba(11, 95, 88, 0.06);
  --beam-end: rgba(11, 95, 88, 0);
}

.hero {
  position: relative;
  overflow-x: clip;
  padding: 36px var(--gutter) 26px;
  text-align: center;
}

.hero-inner {
  position: relative;
  z-index: 2;
  max-width: 960px;
  margin-inline: auto;
}

.hero-badge {
  display: inline-flex;
  max-width: 100%;
  align-items: center;
  gap: 9px;
  margin-bottom: 18px;
  padding: 5px 14px;
  border: 1px solid var(--color-line);
  border-radius: var(--radius-pill);
  background: var(--color-panel);
  color: var(--color-ink-muted);
  font-family: var(--font-mono);
  font-size: 11.5px;
  letter-spacing: 0.08em;
}

.hero-title-line {
  display: block;
}

.hero-accent {
  color: var(--color-accent);
}

.hero-actions {
  display: flex;
  flex-wrap: wrap;
  justify-content: center;
  gap: 14px;
  margin-bottom: 18px;
}

.hero-description {
  margin-bottom: 16px;
  color: var(--color-ink-muted);
  font-size: 16px;
}

.hero-description strong {
  color: var(--color-ink);
}

.trust-row {
  display: flex;
  flex-wrap: wrap;
  justify-content: center;
  gap: 10px;
  margin-bottom: 30px;
}

.trust-chip {
  padding: 5px 13px;
  font-size: 12.5px;
}

.trust-chip svg {
  width: 11px;
  height: 11px;
  flex-shrink: 0;
  color: var(--color-success);
}

.beacon-card {
  max-width: 900px;
  margin-inline: auto;
  overflow: hidden;
  border: 1px solid var(--color-line);
  border-radius: var(--radius-md);
  background: var(--color-panel);
  text-align: left;
}

.beacon-card > svg {
  width: 100%;
  height: auto;
}

.chart-grid {
  stroke: var(--color-line);
  stroke-width: 1;
  opacity: 0.62;
}

.chart-cross {
  stroke: var(--color-line);
  stroke-width: 1;
}

.lighthouse-line {
  fill: var(--color-canvas);
  stroke: var(--color-ink);
  stroke-width: 1.3;
  stroke-linejoin: round;
}

.lighthouse-dark {
  fill: var(--color-ink);
}

.lighthouse-band {
  fill: var(--color-panel-strong);
}

.lighthouse-thin {
  fill: none;
  stroke: var(--color-ink);
  stroke-width: 0.9;
}

.lighthouse-rock {
  fill: var(--color-panel-strong);
  stroke: var(--color-ink-muted);
  stroke-width: 0.9;
}

.beam-edge {
  fill: none;
  stroke: var(--color-accent);
  stroke-width: 0.9;
  opacity: 0.32;
}

.route-base {
  fill: none;
  stroke: var(--color-ink-muted);
  stroke-width: 1;
  stroke-dasharray: 2 7;
  opacity: 0.45;
}

.route-live {
  fill: none;
  stroke: var(--color-accent);
  stroke-width: 1.6;
}

.buoy-core {
  fill: var(--color-accent);
}

.buoy-ring {
  fill: none;
  stroke: var(--color-accent);
  stroke-width: 1.1;
}

.buoy-ring-faint {
  fill: none;
  stroke: var(--color-accent);
  stroke-width: 0.8;
  opacity: 0.3;
}

.chart-note,
.chart-note-strong {
  font-family: var(--font-mono);
  font-size: 10px;
  letter-spacing: 0.08em;
}

.chart-note {
  fill: var(--color-ink-muted);
}

.chart-note-strong {
  fill: var(--color-ink);
  font-weight: 700;
}

.ports-row,
.platform-strip {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
}

.ports-row {
  gap: 18px;
  padding: 11px 22px;
  border-top: 1px solid var(--color-line);
  background: var(--color-canvas);
}

.ports-label,
.platform-label {
  color: var(--color-ink-muted);
  font-family: var(--font-mono);
  font-size: 10.5px;
  letter-spacing: 0.1em;
}

.port-badge,
.platform-inline {
  display: inline-flex;
  align-items: center;
  gap: 7px;
  color: var(--color-ink-muted);
  font-size: 12.5px;
}

.port-badge svg {
  width: 20px;
  height: 20px;
  flex-shrink: 0;
  overflow: hidden;
}

.platform-strip {
  justify-content: center;
  gap: 24px;
  margin-top: 18px;
}

.platform-inline svg {
  width: 18px;
  height: 18px;
  flex-shrink: 0;
}

.platform-inline:hover {
  color: var(--color-accent);
}

.tab-shell {
  min-width: 0;
}

.tab-list {
  display: flex;
  max-width: 100%;
  gap: 6px;
  overflow-x: auto;
  padding: 5px;
  border: 1px solid var(--color-line);
  border-radius: var(--radius-md);
  background: var(--color-panel);
  -webkit-overflow-scrolling: touch;
}

.tab-list [role='tab'] {
  min-height: 40px;
  flex: 0 0 auto;
  padding: 8px 16px;
  border: 1px solid transparent;
  border-radius: var(--radius-sm);
  background: transparent;
  color: var(--color-ink-muted);
  font-weight: 650;
}

.tab-list [role='tab'][aria-selected='true'] {
  border-color: var(--color-line);
  background: var(--color-canvas);
  color: var(--color-accent);
}

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

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

.toc-tabs {
  position: sticky;
  top: 0;
  z-index: 70;
  display: flex;
  max-width: 100%;
  gap: 6px;
  overflow-x: auto;
  padding: 8px var(--gutter);
  border-block: 1px solid var(--color-line);
  background: var(--color-canvas);
  scrollbar-width: thin;
  -webkit-overflow-scrolling: touch;
}

.toc-tabs a {
  min-height: 38px;
  flex: 0 0 auto;
  padding: 8px 13px;
  border-radius: var(--radius-sm);
  color: var(--color-ink-muted);
  font-size: 13px;
  white-space: nowrap;
}

.toc-tabs a:hover,
.toc-tabs a.is-current,
.toc-tabs a[aria-current='location'] {
  background: var(--color-panel-strong);
  color: var(--color-accent);
}

.faq-list {
  border-top: 1px solid var(--color-line);
}

.faq-item {
  border-bottom: 1px solid var(--color-line);
}

.faq-item summary {
  position: relative;
  min-height: 58px;
  padding: 17px 38px 17px 0;
  color: var(--color-ink);
  font-weight: 700;
  cursor: pointer;
  list-style: none;
}

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

.faq-item summary::after {
  position: absolute;
  top: 17px;
  right: 4px;
  color: var(--color-accent);
  content: '+';
  font-family: var(--font-mono);
  font-size: 20px;
}

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

.faq-answer {
  max-width: 780px;
  padding: 0 38px 19px 0;
  color: var(--color-ink-muted);
}

.plan-grid {
  display: grid;
  grid-template-columns: repeat(3, minmax(0, 1fr));
  gap: 18px;
}

.plan-card {
  position: relative;
  min-width: 0;
  padding: 28px;
  border: 1px solid var(--color-line);
  border-radius: var(--radius-md);
  background: var(--color-canvas);
}

.plan-card.is-featured {
  border-color: var(--color-accent);
  background: var(--color-panel);
}

.plan-ribbon {
  position: absolute;
  top: 12px;
  right: 12px;
  padding: 4px 9px;
  border-radius: var(--radius-pill);
  background: var(--color-accent);
  color: var(--color-white);
  font-size: 11px;
  font-weight: 700;
}

.plan-name {
  margin-bottom: 20px;
  font-family: var(--font-mono);
  font-size: 12px;
  letter-spacing: 0.1em;
}

.plan-price {
  display: flex;
  align-items: baseline;
  gap: 4px;
  margin-bottom: 8px;
}

.plan-price strong {
  font-family: var(--font-display);
  font-size: 42px;
  line-height: 1;
}

.plan-price span {
  color: var(--color-ink-muted);
}

.plan-note {
  min-height: 48px;
  color: var(--color-ink-muted);
}

.plan-features {
  display: grid;
  gap: 9px;
  margin: 22px 0;
  padding: 20px 0 0;
  border-top: 1px solid var(--color-line);
  list-style: none;
}

.plan-features li {
  position: relative;
  padding-left: 20px;
  color: var(--color-ink-muted);
}

.plan-features li::before {
  position: absolute;
  left: 0;
  color: var(--color-success);
  content: '✓';
}

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

.table-scroll,
.server-table-wrap,
.compare-table-wrap {
  width: 100%;
  max-width: 100%;
  overflow-x: auto;
  border: 1px solid var(--color-line);
  border-radius: var(--radius-md);
  background: var(--color-canvas);
  -webkit-overflow-scrolling: touch;
}

.data-table,
.server-table,
.compare-table {
  width: 100%;
  border-collapse: collapse;
  text-align: left;
}

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

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

.data-table th,
.data-table td,
.server-table th,
.server-table td,
.compare-table th,
.compare-table td {
  padding: 14px 16px;
  border-bottom: 1px solid var(--color-line);
  vertical-align: top;
}

.data-table th,
.server-table th,
.compare-table th {
  background: var(--color-panel-strong);
  color: var(--color-ink);
  font-family: var(--font-mono);
  font-size: 11px;
  letter-spacing: 0.05em;
}

.data-table tbody tr:hover,
.server-table tbody tr:hover,
.compare-table tbody tr:hover {
  background: var(--color-panel);
}

.server-group td {
  background: var(--color-panel);
  color: var(--color-accent);
  font-family: var(--font-mono);
  font-size: 11px;
  font-weight: 700;
  letter-spacing: 0.08em;
}

.table-yes {
  color: var(--color-success);
  font-weight: 700;
}

.table-limited {
  color: var(--color-warning);
  font-weight: 700;
}

.prose > .data-table {
  display: block;
  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 {
  min-width: 0;
  padding: 22px 16px;
  border: 1px solid var(--color-line);
  border-radius: var(--radius-md);
  background: var(--color-canvas);
  text-align: center;
}

.platform-card-icon {
  display: grid;
  width: var(--platform-icon-size);
  height: var(--platform-icon-size);
  place-items: center;
  margin: 0 auto 13px;
  border: 1px solid var(--color-line);
  border-radius: var(--radius-sm);
  color: var(--color-ink-muted);
}

.platform-card-icon svg {
  width: 22px;
  height: 22px;
}

.platform-card h3 {
  margin-bottom: 8px;
  font-size: 17px;
}

.platform-card p {
  min-height: 48px;
  color: var(--color-ink-muted);
  font-size: 13px;
}

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

.article-grid {
  display: grid;
  grid-template-columns: repeat(3, minmax(0, 1fr));
  gap: 18px;
}

.article-card {
  display: flex;
  min-width: 0;
  flex-direction: column;
  padding: 22px;
  border: 1px solid var(--color-line);
  border-radius: var(--radius-md);
  background: var(--color-canvas);
  transition: border-color var(--ease-standard), transform var(--ease-standard);
}

.article-card:hover {
  border-color: var(--color-accent);
  transform: translateY(-2px);
}

.article-card-meta {
  display: flex;
  flex-wrap: wrap;
  gap: 8px;
  margin-bottom: 16px;
  color: var(--color-ink-muted);
  font-family: var(--font-mono);
  font-size: 11px;
}

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

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

.article-card-link {
  margin-top: auto;
  color: var(--color-accent);
  font-weight: 700;
}

.callout {
  position: relative;
  margin: 24px 0;
  padding: 18px 20px 18px 24px;
  border: 1px solid var(--color-line);
  border-left: 3px solid var(--color-accent);
  border-radius: var(--radius-sm);
  background: var(--color-panel);
  color: var(--color-ink-muted);
}

.callout strong {
  color: var(--color-ink);
}

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

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

.end-promo {
  display: grid;
  grid-template-columns: minmax(0, 1fr) auto;
  align-items: center;
  gap: 24px;
  margin-top: 48px;
  padding: clamp(24px, 4vw, 38px);
  border-radius: var(--radius-md);
  background: var(--color-accent-deep);
  color: var(--promo-ink);
}

.end-promo h2,
.end-promo h3 {
  margin-bottom: 8px;
  color: var(--promo-ink);
}

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

.end-promo .btn {
  border-color: var(--color-white);
  background: var(--color-white);
  color: var(--color-accent-deep);
}

.feature-browser {
  display: grid;
  grid-template-columns: minmax(260px, 0.78fr) minmax(0, 1.22fr);
  gap: 20px;
}

.feature-index {
  display: grid;
  gap: 8px;
}

.feature-index button {
  position: relative;
  width: 100%;
  min-height: 72px;
  padding: 13px 15px 13px 20px;
  border: 1px solid var(--color-line);
  border-radius: var(--radius-sm);
  background: var(--color-canvas);
  color: var(--color-ink-muted);
  text-align: left;
}

.feature-index button::before {
  position: absolute;
  top: 10px;
  bottom: 10px;
  left: -1px;
  width: 2px;
  background: transparent;
  content: '';
}

.feature-index button[aria-selected='true'] {
  color: var(--color-ink);
}

.feature-index button[aria-selected='true']::before {
  background: var(--color-accent);
}

.feature-index small {
  display: block;
  margin-bottom: 4px;
  color: var(--color-accent);
  font-family: var(--font-mono);
}

.feature-detail {
  min-width: 0;
  padding: clamp(24px, 4vw, 42px);
  border: 1px solid var(--color-line);
  border-radius: var(--radius-md);
  background: var(--color-panel);
}

.feature-fact {
  margin-top: 24px;
  padding-top: 16px;
  border-top: 1px solid var(--color-line);
  color: var(--color-ink-muted);
  font-family: var(--font-mono);
  font-size: 12px;
}

.preview-section {
  padding-top: 72px;
  padding-bottom: 72px;
  border-top: 1px solid var(--color-line);
}

.swatch-grid {
  display: grid;
  grid-template-columns: repeat(4, minmax(0, 1fr));
  gap: 12px;
}

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

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

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

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

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

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

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

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

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

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

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

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

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

.swatch-meta {
  padding: 12px;
}

.swatch-meta code {
  display: block;
  color: var(--color-ink-muted);
  font-size: 11px;
}

.type-sample {
  padding-block: 18px;
  border-bottom: 1px solid var(--color-line);
}

.type-sample:last-child {
  border-bottom: 0;
}

@media (max-width: 960px) {
  .plan-grid,
  .article-grid {
    grid-template-columns: minmax(0, 1fr);
  }

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

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

@media (max-width: 768px) {
  .hero {
    padding-top: 26px;
  }

  .chart-mobile-hide {
    display: none;
  }

  .ports-row {
    gap: 13px;
    padding-inline: 15px;
  }

  .platform-strip {
    gap: 14px;
  }

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

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

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

@media (max-width: 640px) {
  .hero-actions {
    align-items: stretch;
  }

  .hero-actions .btn {
    flex: 1 1 140px;
  }

  .hero-badge {
    letter-spacing: 0.04em;
  }

  .trust-row {
    align-items: stretch;
  }

  .trust-chip {
    white-space: normal;
  }

  .plan-card {
    padding: 22px;
  }

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

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

  .toc-tabs {
    padding-inline: var(--gutter);
  }
}