/* ===== 资料档位说明 · /pricing/ ===== */

.page-pricing {
  --pricing-grid: 1.25fr repeat(4, minmax(0, 1fr));
  --pricing-row-hover: color-mix(in srgb, var(--color-primary-soft) 48%, transparent);
  --pricing-head-shadow: 0 6px 14px color-mix(in srgb, var(--color-ink) 16%, transparent);
}

/* ---------- 首屏 ---------- */

.page-pricing .tier-hero__head {
  max-width: 66ch;
}

.page-pricing .tier-hero__title {
  margin: var(--space-2) 0 0;
  font-family: var(--font-heading);
  font-size: var(--text-display);
  font-weight: var(--weight-heading);
  line-height: var(--leading-heading);
  letter-spacing: var(--tracking-heading);
  color: var(--color-ink);
}

.page-pricing .tier-hero__lead {
  margin: var(--space-4) 0 0;
  max-width: var(--measure);
  font-size: var(--text-lg);
  line-height: var(--leading-body);
  color: var(--color-ink-soft);
}

.page-pricing .tier-hero__figures {
  margin-top: var(--space-8);
  padding: var(--space-6) var(--space-4);
  display: grid;
  grid-template-columns: repeat(3, minmax(0, 1fr));
  gap: var(--space-2);
  background: var(--color-contrast-surface);
  border-radius: var(--radius-lg);
}

.page-pricing .tier-figure {
  display: flex;
  flex-direction: column;
  gap: var(--space-1);
  padding-left: var(--space-4);
}

.page-pricing .tier-figure:first-child {
  padding-left: 0;
}

.page-pricing .tier-figure + .tier-figure {
  border-left: 1px solid var(--color-contrast-line);
}

.page-pricing .tier-figure__num {
  font-family: var(--font-mono);
  font-size: var(--text-figure);
  line-height: 1;
  letter-spacing: -0.02em;
  font-variant-numeric: tabular-nums;
  color: var(--color-contrast-accent);
}

.page-pricing .tier-figure__label {
  font-size: var(--text-sm);
  letter-spacing: 0.06em;
  color: var(--color-contrast-ink);
}

.page-pricing .tier-hero__frame {
  margin: var(--space-6) 0 0;
}

/* ---------- 对比表 ---------- */

.page-pricing .compare {
  margin-top: var(--space-6);
  max-height: 640px;
  overflow: auto;
  border-radius: var(--radius-lg);
  background: var(--color-surface);
  overscroll-behavior: contain;
}

.page-pricing .compare__head {
  position: sticky;
  top: 0;
  z-index: 3;
  display: grid;
  grid-template-columns: var(--pricing-grid);
  align-items: end;
  padding: var(--space-3) 0;
  background: var(--color-surface);
  box-shadow: var(--pricing-head-shadow);
}

.page-pricing .compare__corner {
  padding: 0 var(--space-3);
  font-size: var(--text-xs);
  letter-spacing: 0.1em;
  color: var(--color-ink-muted);
  align-self: end;
}

.page-pricing .compare__col {
  display: flex;
  flex-direction: column;
  gap: 2px;
  padding: 0 var(--space-3);
}

.page-pricing .compare__col-name {
  font-family: var(--font-heading);
  font-size: var(--text-lg);
  color: var(--color-ink);
}

.page-pricing .compare__col-note {
  font-size: var(--text-xs);
  color: var(--color-ink-muted);
}

.page-pricing .compare__group {
  background: var(--color-surface);
}

.page-pricing .compare__group--a {
  background: var(--color-surface-alt);
}

.page-pricing .compare__group--b {
  background: var(--color-highlight);
}

.page-pricing .compare__group--c {
  background: var(--color-surface-deep);
}

.page-pricing .compare__group--d {
  background: var(--color-surface-alt);
}

.page-pricing .compare__group-title {
  margin: 0;
  padding: var(--space-4) var(--space-3) var(--space-2);
}

.page-pricing .compare__group-toggle {
  display: inline-flex;
  align-items: baseline;
  gap: var(--space-2);
  padding: 0 0 0 var(--space-2);
  border: 0;
  border-left: 3px solid var(--color-primary);
  background: none;
  font-family: var(--font-heading);
  font-size: var(--text-xl);
  font-weight: var(--weight-heading);
  line-height: var(--leading-heading);
  color: var(--color-ink);
  cursor: pointer;
  transition: color 200ms ease-out;
}

.page-pricing .compare__group-toggle:hover {
  color: var(--color-primary);
}

.page-pricing .compare__group-count {
  font-size: var(--text-xs);
  color: var(--color-ink-muted);
}

.page-pricing .compare__group .expand-inner {
  padding: 0;
}

.page-pricing .compare__row {
  display: grid;
  grid-template-columns: var(--pricing-grid);
  align-items: stretch;
  transition: background-color 220ms ease-out;
}

.page-pricing .compare__row:hover {
  background: var(--pricing-row-hover);
}

.page-pricing .compare__key {
  display: flex;
  align-items: center;
  padding: var(--space-3);
  font-size: var(--text-base);
  font-weight: 500;
  color: var(--color-ink);
}

.page-pricing .compare__cell {
  display: flex;
  align-items: center;
  margin: 3px;
  padding: var(--space-2) var(--space-3);
  border-radius: var(--radius-sm);
  font-family: var(--font-mono);
  font-size: var(--text-sm);
  line-height: 1.5;
  color: var(--color-ink);
  background: transparent;
  transition: background-color 220ms ease-out, box-shadow 220ms ease-out;
}

.page-pricing .compare__cell--on {
  background: var(--color-primary-soft);
}

.page-pricing .compare__cell--full {
  background: var(--color-primary-soft);
  box-shadow: inset 0 0 0 1px var(--color-accent);
}

.page-pricing .compare__cell--off {
  background: color-mix(in srgb, var(--color-surface-deep) 68%, transparent);
  color: var(--color-ink-muted);
}

/* ---------- 栏目范围解读 ---------- */

.page-pricing .tier-scope__grid {
  align-items: start;
}

.page-pricing .tier-scope__list {
  margin-top: var(--space-6);
}

.page-pricing .tier-scope__list .data-row {
  border-left: 3px solid var(--color-primary);
  padding-left: var(--space-3);
}

.page-pricing .tier-scope__frame {
  margin: 0;
}

/* ---------- 同步与回溯 ---------- */

.page-pricing .tier-history__grid {
  align-items: start;
}

.page-pricing .tier-history__frame {
  margin: 0;
}

.page-pricing .tier-history__lead {
  margin: var(--space-4) 0 0;
  max-width: 56ch;
  font-size: var(--text-base);
  line-height: var(--leading-body);
  color: var(--color-ink-soft);
}

.page-pricing .tier-history__steps {
  margin: var(--space-6) 0 0;
  padding: 0;
  list-style: none;
  display: flex;
  flex-direction: column;
  gap: var(--space-4);
}

.page-pricing .tier-history__step {
  display: grid;
  grid-template-columns: auto minmax(0, 1fr);
  gap: var(--space-3);
  padding-left: var(--space-3);
  border-left: 3px solid var(--color-accent);
}

.page-pricing .tier-history__step-no {
  font-size: var(--text-sm);
  color: var(--color-accent);
  padding-top: 4px;
}

.page-pricing .tier-history__step-title {
  margin: 0;
  font-family: var(--font-heading);
  font-size: var(--text-xl);
  font-weight: var(--weight-heading);
  line-height: var(--leading-heading);
  color: var(--color-ink);
}

.page-pricing .tier-history__step-text {
  margin: var(--space-1) 0 0;
  font-size: var(--text-base);
  line-height: var(--leading-body);
  color: var(--color-ink-soft);
}

.page-pricing .tier-history__links {
  margin: var(--space-6) 0 0;
  font-size: var(--text-base);
  line-height: var(--leading-body);
  color: var(--color-ink-soft);
}

.page-pricing .tier-history__links a {
  color: var(--color-primary);
  text-decoration: underline;
  text-underline-offset: 3px;
}

/* ---------- 选择建议 ---------- */

.page-pricing .tier-pick__panel {
  padding: var(--space-8) var(--space-6);
  border-radius: var(--radius-lg);
}

.page-pricing .tier-pick__head {
  max-width: 52ch;
}

.page-pricing .tier-pick__items {
  margin-top: var(--space-6);
  display: grid;
  grid-template-columns: repeat(3, minmax(0, 1fr));
  gap: var(--space-6);
}

.page-pricing .tier-pick__item {
  display: flex;
  flex-direction: column;
  align-items: flex-start;
  gap: var(--space-2);
  padding-left: var(--space-3);
  border-left: 3px solid var(--color-primary);
}

.page-pricing .tier-pick__name {
  margin: 0;
  font-family: var(--font-heading);
  font-size: var(--text-2xl);
  font-weight: var(--weight-heading);
  line-height: var(--leading-heading);
  color: var(--color-ink);
}

.page-pricing .tier-pick__text {
  margin: 0;
  font-size: var(--text-base);
  line-height: var(--leading-body);
  color: var(--color-ink-soft);
}

.page-pricing .tier-pick__item .btn {
  margin-top: auto;
}

/* ---------- 口径与限制 ---------- */

.page-pricing .tier-notes__grid {
  align-items: start;
}

.page-pricing .tier-notes__list {
  margin: 0;
  padding: 0;
  list-style: none;
  counter-reset: tier-note;
  display: flex;
  flex-direction: column;
  gap: var(--space-3);
}

.page-pricing .tier-notes__item {
  counter-increment: tier-note;
  position: relative;
  padding-left: var(--space-6);
  font-size: var(--text-base);
  line-height: var(--leading-body);
  color: var(--color-ink-soft);
}

.page-pricing .tier-notes__item::before {
  content: counter(tier-note, decimal-leading-zero);
  position: absolute;
  left: 0;
  top: 2px;
  font-family: var(--font-mono);
  font-size: var(--text-sm);
  color: var(--color-accent);
}

.page-pricing .tier-notes__item a {
  color: var(--color-primary);
  text-decoration: underline;
  text-underline-offset: 3px;
}

/* ---------- 焦点可见 ---------- */

.page-pricing a:focus-visible,
.page-pricing button:focus-visible,
.page-pricing .compare:focus-visible {
  outline: 2px solid var(--color-focus);
  outline-offset: 2px;
}

/* ---------- 窄屏 ---------- */

@media (max-width: 900px) {
  .page-pricing .tier-hero__figures {
    grid-template-columns: minmax(0, 1fr);
    gap: var(--space-4);
    padding: var(--space-4) var(--space-3);
  }

  .page-pricing .tier-figure {
    padding-left: 0;
  }

  .page-pricing .tier-figure + .tier-figure {
    border-left: 0;
    border-top: 1px solid var(--color-contrast-line);
    padding-top: var(--space-3);
  }

  .page-pricing .compare {
    max-height: none;
    overflow: visible;
    background: transparent;
    border-radius: 0;
  }

  .page-pricing .compare__head {
    display: none;
  }

  .page-pricing .compare__group {
    border-radius: var(--radius-md);
    overflow: hidden;
  }

  .page-pricing .compare__group + .compare__group {
    margin-top: var(--space-2);
  }

  .page-pricing .compare__row {
    display: flex;
    flex-direction: column;
    gap: var(--space-1);
    padding: var(--space-3);
  }

  .page-pricing .compare__row:hover {
    background: transparent;
  }

  .page-pricing .compare__key {
    padding: 0;
    font-size: var(--text-lg);
  }

  .page-pricing .compare__cell {
    margin: 0;
    justify-content: space-between;
    gap: var(--space-3);
    padding: var(--space-2) var(--space-3);
  }

  .page-pricing .compare__cell::before {
    content: attr(data-tier-label);
    font-family: var(--font-body);
    font-size: var(--text-xs);
    letter-spacing: 0.06em;
    color: var(--color-ink-muted);
  }

  .page-pricing .compare__cell--off::before {
    color: var(--color-ink-muted);
  }

  .page-pricing .tier-pick__panel {
    padding: var(--space-6) var(--space-4);
  }

  .page-pricing .tier-pick__items {
    grid-template-columns: minmax(0, 1fr);
    gap: var(--space-4);
  }

  .page-pricing .tier-pick__item .btn {
    margin-top: var(--space-1);
  }
}

@media (max-width: 620px) {
  .page-pricing .tier-hero__figures {
    padding: var(--space-3);
  }

  .page-pricing .tier-figure__num {
    font-size: var(--text-4xl);
  }

  .page-pricing .compare__group-title {
    padding: var(--space-3) var(--space-2) var(--space-2);
  }

  .page-pricing .compare__group-toggle {
    font-size: var(--text-lg);
  }

  .page-pricing .compare__row {
    padding: var(--space-2);
  }

  .page-pricing .tier-notes__item {
    padding-left: var(--space-4);
  }
}

@media (prefers-reduced-motion: reduce) {
  .page-pricing .compare__row,
  .page-pricing .compare__cell,
  .page-pricing .compare__group-toggle {
    transition: none;
  }
}