:root {
  --table-min-width: 720px;
  --compare-min-width: 820px;
  --float-cta-bottom: 24px;
  --float-cta-side: 24px;
}

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

.tab-list,
[role="tablist"] {
  display: flex;
  width: fit-content;
  max-width: 100%;
  gap: 4px;
  padding: 4px;
  overflow-x: auto;
  -webkit-overflow-scrolling: touch;
  border: 1px solid var(--color-line);
  border-radius: var(--radius-sm);
  background: var(--color-panel);
}

.tab-list [role="tab"],
[role="tablist"] [role="tab"] {
  min-height: 42px;
  flex: 0 0 auto;
  padding-inline: 18px;
  border-radius: var(--radius-xs);
  background: transparent;
  color: var(--color-muted);
  font-weight: 700;
}

.tab-list [role="tab"][aria-selected="true"],
.tab-list [role="tab"].is-active,
[role="tablist"] [role="tab"][aria-selected="true"],
[role="tablist"] [role="tab"].is-active {
  background: var(--color-ink);
  color: var(--color-on-dark);
}

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

.toc-tabs {
  position: sticky;
  top: 0;
  z-index: 60;
  display: flex;
  max-width: 100%;
  gap: 4px;
  padding: 8px;
  overflow-x: auto;
  -webkit-overflow-scrolling: touch;
  overscroll-behavior-inline: contain;
  border: 1px solid var(--color-line);
  border-radius: var(--radius-sm);
  background: var(--color-page);
  box-shadow: 0 1px 2px var(--color-shadow-soft);
  scrollbar-width: thin;
}

.toc-tabs a {
  display: inline-flex;
  min-height: 40px;
  flex: 0 0 auto;
  align-items: center;
  padding-inline: 15px;
  border-radius: var(--radius-xs);
  color: var(--color-muted);
  font-size: 14px;
  font-weight: 700;
}

.toc-tabs a:hover,
.toc-tabs a.is-current {
  background: var(--color-ink);
  color: var(--color-on-dark);
}

.faq-list {
  display: grid;
  gap: 10px;
}

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

.faq-item summary {
  position: relative;
  min-height: 58px;
  padding: 17px 52px 17px 20px;
  cursor: pointer;
  font-weight: 800;
  list-style: none;
}

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

.faq-item summary::after {
  position: absolute;
  top: 50%;
  right: 20px;
  font-family: var(--font-mono);
  font-size: 20px;
  line-height: 1;
  transform: translateY(-50%);
  content: "+";
}

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

.faq-answer {
  padding: 0 20px 20px;
  color: var(--color-muted);
  line-height: 1.75;
}

.pricing-grid {
  display: grid;
  grid-template-columns: repeat(3, minmax(0, 1fr));
  gap: 16px;
}

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

.price-card.is-featured {
  border-color: var(--color-ink);
  box-shadow: var(--shadow-card);
}

.price-card.is-featured::before {
  position: absolute;
  top: 0;
  right: 20px;
  padding: 5px 11px;
  border-radius: 0 0 var(--radius-xs) var(--radius-xs);
  background: var(--color-ink);
  color: var(--color-on-dark);
  font-family: var(--font-mono);
  font-size: 11px;
  font-weight: 700;
  content: "最划算";
}

.price-cycle {
  margin-bottom: 16px;
  color: var(--color-muted);
  font-family: var(--font-mono);
  font-size: 12px;
  letter-spacing: 0.08em;
}

.price-number {
  display: flex;
  min-width: 0;
  align-items: baseline;
  gap: 5px;
  margin-bottom: 8px;
  font-family: var(--font-mono);
}

.price-number strong {
  font-size: clamp(38px, 5vw, 56px);
  line-height: 1;
}

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

.price-traffic {
  margin-bottom: 22px;
  font-weight: 800;
}

.price-features {
  display: grid;
  gap: 10px;
  margin-bottom: 26px;
  list-style: none;
  color: var(--color-muted);
  font-size: 14px;
}

.price-features li {
  display: flex;
  gap: 9px;
}

.price-features li::before {
  flex: 0 0 auto;
  color: var(--color-success);
  font-weight: 900;
  content: "✓";
}

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

.table-scroll {
  width: 100%;
  max-width: 100%;
  overflow-x: auto;
  -webkit-overflow-scrolling: touch;
  overscroll-behavior-inline: contain;
  border: 1px solid var(--color-line);
  border-radius: var(--radius-sm);
}

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

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

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

.data-table th,
.location-table th,
.compare-table th {
  background: var(--color-panel-strong);
  color: var(--color-ink);
  font-family: var(--font-mono);
  font-size: 12px;
  letter-spacing: 0.04em;
}

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

.data-table tbody tr:nth-child(even),
.location-table tbody tr:nth-child(even),
.compare-table tbody tr:nth-child(even) {
  background: var(--color-panel);
}

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

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

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

.region-block + .region-block {
  margin-top: 26px;
}

.region-title {
  display: flex;
  align-items: center;
  gap: 10px;
  margin-bottom: 12px;
  font-family: var(--font-mono);
  font-size: 13px;
}

.region-title::before {
  width: 9px;
  height: 9px;
  flex: 0 0 auto;
  background: var(--color-accent);
  content: "";
}

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

.platform-card {
  display: flex;
  min-width: 0;
  min-height: 190px;
  flex-direction: column;
  align-items: flex-start;
  padding: 22px;
  border: 1px solid var(--color-line);
  border-radius: var(--radius-md);
  background: var(--color-page);
}

.platform-icon {
  display: grid;
  width: 42px;
  height: 42px;
  flex: 0 0 auto;
  place-items: center;
  margin-bottom: 30px;
  border-radius: var(--radius-sm);
  background: var(--color-panel-strong);
}

.platform-icon svg {
  width: 23px;
  height: 23px;
  color: var(--color-ink);
}

.platform-card h3 {
  margin-bottom: 5px;
  font-size: 18px;
}

.platform-card p {
  margin-bottom: 18px;
  color: var(--color-muted);
  font-size: 13px;
}

.platform-card .btn-quiet {
  width: 100%;
  margin-top: auto;
  padding-inline: 10px;
}

.article-grid {
  display: grid;
  grid-template-columns: repeat(3, minmax(0, 1fr));
  gap: 16px;
}

.article-card {
  display: flex;
  min-width: 0;
  flex-direction: column;
  padding: 24px;
  border: 1px solid var(--color-line);
  border-radius: var(--radius-md);
  background: var(--color-page);
  transition:
    transform var(--transition-fast),
    border-color var(--transition-fast);
}

.article-card:hover {
  border-color: var(--color-ink);
  transform: translateY(-3px);
}

.article-meta {
  display: flex;
  flex-wrap: wrap;
  gap: 8px;
  margin-bottom: 20px;
  color: var(--color-muted);
  font-family: var(--font-mono);
  font-size: 11px;
}

.article-card h3 {
  margin-bottom: 12px;
  font-size: 21px;
}

.article-card p {
  margin-bottom: 22px;
  color: var(--color-muted);
  line-height: 1.7;
}

.article-link {
  margin-top: auto;
  font-weight: 800;
  text-decoration: underline;
  text-underline-offset: 4px;
}

.callout {
  position: relative;
  padding: 20px 22px 20px 52px;
  border: 1px solid var(--color-line);
  border-left: 4px solid var(--color-accent);
  border-radius: var(--radius-sm);
  background: var(--color-panel);
  color: var(--color-ink);
}

.callout::before {
  position: absolute;
  top: 20px;
  left: 20px;
  font-family: var(--font-mono);
  font-weight: 900;
  content: "TX";
}

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

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

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

.promo-block {
  position: relative;
  display: grid;
  grid-template-columns: minmax(0, 1fr) auto;
  align-items: center;
  gap: 28px;
  padding: 34px;
  overflow: hidden;
  border-radius: var(--radius-md);
  background: var(--color-ink);
  color: var(--color-on-dark);
}

.promo-block::after {
  position: absolute;
  top: -40px;
  right: 150px;
  width: 3px;
  height: 160px;
  background: var(--color-accent);
  transform: rotate(18deg);
  content: "";
}

.promo-brand {
  margin-bottom: 6px;
  font-family: var(--font-mono);
  font-size: 12px;
  letter-spacing: 0.1em;
}

.promo-block h2,
.promo-block h3,
.promo-block p {
  color: var(--color-on-dark);
}

.promo-block h2,
.promo-block h3 {
  font-size: clamp(24px, 3vw, 36px);
}

.promo-block p {
  margin-top: 8px;
  max-width: 650px;
}

.promo-block .btn-primary {
  background: var(--color-page);
  color: var(--color-ink);
}

.promo-block .btn-primary:hover {
  background: var(--color-accent);
  color: var(--color-on-dark);
}

.float-cta {
  position: fixed;
  right: var(--float-cta-side);
  bottom: var(--float-cta-bottom);
  z-index: 80;
  display: inline-flex;
  min-height: 46px;
  align-items: center;
  gap: 9px;
  padding-inline: 22px;
  border-radius: var(--radius-pill);
  background: var(--color-ink);
  color: var(--color-on-dark);
  box-shadow: var(--shadow-button);
  font-size: 14px;
  font-weight: 800;
  transition:
    background var(--transition-fast),
    transform var(--transition-fast);
}

.float-cta:hover {
  background: var(--color-accent);
  transform: translateY(-2px);
}

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

.channel-memory {
  display: grid;
  grid-template-columns: minmax(220px, 0.75fr) minmax(0, 1.55fr);
  gap: 16px;
}

.channel-list {
  display: grid;
  align-content: start;
  border: 1px solid var(--color-line);
  border-radius: var(--radius-sm);
  background: var(--color-page);
}

.channel-button {
  position: relative;
  display: grid;
  grid-template-columns: 62px minmax(0, 1fr);
  min-height: 60px;
  align-items: center;
  gap: 10px;
  padding: 10px 16px;
  border-bottom: 1px solid var(--color-line);
  background: var(--color-page);
  text-align: left;
}

.channel-button:last-child {
  border-bottom: 0;
}

.channel-button .channel-code {
  color: var(--color-muted);
  font-family: var(--font-mono);
  font-size: 11px;
}

.channel-button.is-active {
  font-weight: 800;
}

.channel-button.is-active::before {
  position: absolute;
  left: 0;
  width: 0;
  height: 0;
  border-top: 6px solid transparent;
  border-bottom: 6px solid transparent;
  border-left: 8px solid var(--color-accent);
  content: "";
}

.channel-button.is-active::after {
  position: absolute;
  right: 12px;
  bottom: 0;
  left: 12px;
  height: 2px;
  background: var(--color-ink);
  content: "";
}

.channel-detail {
  min-width: 0;
  min-height: 390px;
  padding: 38px;
  border: 1px solid var(--color-line);
  border-radius: var(--radius-sm);
  background: var(--color-page);
}

.channel-detail p {
  margin-top: 18px;
  color: var(--color-muted);
  line-height: 1.9;
}

.channel-param {
  margin-top: 28px;
  padding-top: 18px;
  border-top: 1px solid var(--color-line);
  font-family: var(--font-mono);
  font-size: 12px;
}

@media (max-width: 900px) {
  .pricing-grid,
  .article-grid {
    grid-template-columns: repeat(2, minmax(0, 1fr));
  }

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

@media (max-width: 700px) {
  .channel-memory {
    grid-template-columns: minmax(0, 1fr);
  }

  .channel-list {
    gap: 8px;
    border: 0;
  }

  .channel-button {
    border: 1px solid var(--color-line);
    border-radius: var(--radius-sm);
  }

  .channel-button:last-child {
    border-bottom: 1px solid var(--color-line);
  }

  .channel-detail {
    min-height: 0;
    padding: 24px;
  }

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

  .promo-block::after {
    display: none;
  }
}

@media (max-width: 640px) {
  .pricing-grid,
  .article-grid,
  .platform-grid {
    grid-template-columns: minmax(0, 1fr);
  }

  .platform-card {
    min-height: 0;
  }

  .float-cta {
    right: 16px;
    bottom: 16px;
    padding-inline: 18px;
  }

  .toc-tabs {
    border-radius: 0;
  }
}

@media (prefers-reduced-motion: reduce) {
  .article-card:hover,
  .float-cta:hover {
    transform: none;
  }
}

/* 2026-08-20 小学生走查:悬浮 CTA 压字(压正文段尾/博客卡标题/页脚法律链,JVVPN/HBVPN/VPNFF 最狠)。
   页尾追加与浮标等高的垫块:滚到底时浮标落在空白带上,不再永久遮挡内容 */
body:has(.float-cta)::after {
  content: '';
  display: block;
  height: calc(88px + env(safe-area-inset-bottom, 0px));
}