.page-features {
  --feat-log-stripe: 4.5rem;
}

/* ---------- 首屏：框景 ---------- */
.page-features .feat-hero {
  padding-top: var(--section-y);
  padding-bottom: var(--space-4);
}

.page-features .feat-hero__frame {
  position: relative;
  background: var(--color-surface);
  border: var(--border-thick) solid var(--color-contrast-surface);
  border-radius: var(--radius-md);
  box-shadow: var(--shadow-2);
  overflow: hidden;
}

.page-features .feat-hero__frame::after {
  content: "";
  position: absolute;
  inset: 8px;
  border: 1px dashed var(--color-line);
  border-radius: var(--radius-sm);
  pointer-events: none;
}

.page-features .feat-hero__grid {
  position: relative;
  z-index: 1;
  display: grid;
  gap: var(--space-4);
  padding: var(--space-3);
}

.page-features .feat-hero__crumb {
  margin-bottom: var(--space-3);
  font-size: var(--text-sm);
  color: var(--color-ink-soft);
}

.page-features .feat-hero__title {
  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);
  margin: 0 0 var(--space-3);
}

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

.page-features .feat-hero__media {
  margin: 0;
  border-radius: var(--radius-sm);
  overflow: hidden;
  border: var(--border-thick) solid var(--color-surface-deep);
}

.page-features .feat-hero__media .media-frame__img {
  display: block;
  width: 100%;
  height: auto;
  aspect-ratio: 2 / 1;
  object-fit: cover;
}

.page-features .feat-hero__figures {
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: var(--space-2);
  align-content: start;
}

.page-features .figure-cell {
  display: flex;
  flex-direction: column;
  justify-content: space-between;
  gap: var(--space-2);
  min-height: 7.5rem;
  padding: var(--space-3);
  border-radius: var(--radius-sm);
  border: var(--border-thick) solid var(--color-contrast-surface);
  box-shadow: var(--shadow-1);
}

.page-features .figure-cell--dark {
  background: var(--color-contrast-surface);
  color: var(--color-contrast-ink);
  border-color: var(--color-contrast-surface);
}

.page-features .figure-cell--primary {
  background: var(--color-primary);
  color: var(--color-primary-ink);
  border-color: var(--color-primary);
}

.page-features .figure-cell--light {
  background: var(--color-surface-deep);
  color: var(--color-ink);
  border-color: var(--color-line);
}

.page-features .figure-cell__value {
  font-family: var(--font-mono);
  font-size: var(--text-figure);
  font-weight: var(--weight-heading);
  line-height: 1;
  letter-spacing: 0.02em;
}

.page-features .figure-cell__label {
  font-size: var(--text-sm);
  line-height: 1.4;
}

.page-features .feat-hero__quote {
  margin: var(--space-4) 0 var(--space-2);
}

.page-features .feat-hero__note {
  margin: 0;
  font-size: var(--text-sm);
  color: var(--color-ink-muted);
}

.page-features .link-inline {
  color: var(--color-accent);
  text-decoration: underline;
  text-decoration-style: dashed;
  text-underline-offset: 3px;
}

.page-features .link-inline:hover,
.page-features .link-inline:focus-visible {
  text-decoration-style: solid;
}

/* ---------- 筛选条 ---------- */
.page-features .feat-filter-wrap {
  padding-top: var(--space-6);
  padding-bottom: var(--space-4);
}

.page-features .feat-filter {
  display: flex;
  flex-wrap: wrap;
  gap: var(--space-1);
  padding: var(--space-2);
  background: var(--color-surface-alt);
  border: var(--border-thick) solid var(--color-line);
  border-radius: var(--radius-sm);
}

.page-features .feat-filter__note {
  margin: var(--space-2) 0 0;
  font-size: var(--text-xs);
  color: var(--color-ink-muted);
}

.page-features .feat-filter-empty {
  margin: var(--space-2) 0 0;
  padding: var(--space-2) var(--space-3);
  background: var(--color-highlight);
  border-left: var(--border-thick) solid var(--color-accent);
  border-radius: var(--radius-sm);
  font-size: var(--text-sm);
  color: var(--color-ink);
}

/* ---------- 分组通用 ---------- */
.page-features .feat-groups {
  display: block;
}

.page-features .feat-group {
  padding-top: var(--section-y);
  padding-bottom: var(--section-y);
}

.page-features .feat-group + .feat-group {
  border-top: 1px dashed var(--color-line);
}

.page-features .feat-group__intro-grid {
  display: grid;
  gap: var(--space-4);
  margin-bottom: var(--space-6);
}

.page-features .feat-group__intro {
  max-width: var(--measure);
  margin: 0 0 var(--space-2);
  font-size: var(--text-base);
  line-height: var(--leading-body);
  color: var(--color-ink);
}

.page-features .feat-group__figure {
  margin: 0;
  border-radius: var(--radius-sm);
  overflow: hidden;
  border: var(--border-thick) solid var(--color-surface-deep);
}

.page-features .feat-group__figure .media-frame__img {
  display: block;
  width: 100%;
  height: auto;
  object-fit: cover;
}

.page-features .feat-group__figure--full .media-frame__img {
  aspect-ratio: 1120 / 360;
}

.page-features .feat-group__foot {
  margin: var(--space-4) 0 0;
  padding-left: var(--space-3);
  border-left: var(--border-thick) solid var(--color-primary);
  font-size: var(--text-sm);
  line-height: var(--leading-body);
  color: var(--color-ink-soft);
}

/* ---------- 01 版本日志 ---------- */
.page-features .feat-log {
  display: grid;
  gap: var(--space-2);
}

.page-features .feat-log__season {
  border: 1px dashed var(--color-line);
  border-radius: var(--radius-sm);
  background: var(--color-surface-alt);
  overflow: hidden;
}

.page-features .feat-log__season[open] {
  border-style: solid;
}

.page-features .feat-log__season summary {
  display: flex;
  flex-wrap: wrap;
  align-items: baseline;
  gap: var(--space-1) var(--space-3);
  padding: var(--space-2) var(--space-3);
  background: var(--color-surface-deep);
  border-left: var(--border-thick) solid var(--color-primary);
  cursor: pointer;
  list-style: none;
}

.page-features .feat-log__season summary::-webkit-details-marker {
  display: none;
}

.page-features .feat-log__season summary:hover {
  box-shadow: var(--shadow-2);
}

.page-features .feat-log__season-no {
  font-family: var(--font-mono);
  font-size: var(--text-xl);
  font-weight: var(--weight-heading);
  color: var(--color-primary);
}

.page-features .feat-log__season-range {
  font-size: var(--text-sm);
  color: var(--color-ink-soft);
}

.page-features .feat-log__season-count {
  font-size: var(--text-sm);
  color: var(--color-accent);
}

.page-features .feat-log__chev {
  margin-left: auto;
  width: 0.55rem;
  height: 0.55rem;
  border-right: var(--border-thick) solid var(--color-ink-soft);
  border-bottom: var(--border-thick) solid var(--color-ink-soft);
  transform: rotate(45deg);
  transition: transform 120ms ease-out;
}

.page-features .feat-log__season[open] .feat-log__chev {
  transform: rotate(-135deg);
}

.page-features .feat-log__rows {
  list-style: none;
  margin: 0;
  padding: 0 var(--space-3);
}

.page-features .feat-log__row {
  display: grid;
  gap: var(--space-1);
  padding: var(--space-2) 0;
  border-bottom: 1px dashed var(--color-line);
}

.page-features .feat-log__row:last-child {
  border-bottom: none;
}

.page-features .feat-log__row-no {
  font-size: var(--text-lg);
  font-weight: var(--weight-heading);
  color: var(--color-contrast-surface);
  letter-spacing: 0.04em;
}

.page-features .feat-log__row-change {
  font-size: var(--text-base);
  line-height: 1.6;
  color: var(--color-ink);
}

.page-features .feat-log__row-scope,
.page-features .feat-log__row-eff {
  font-size: var(--text-sm);
  color: var(--color-ink-muted);
}

.page-features .feat-log__row-eff {
  color: var(--color-accent);
}

/* ---------- 02 额度归档表格 ---------- */
.page-features .feat-quota-wrap {
  border: var(--border-thick) solid var(--color-line);
  border-radius: var(--radius-sm);
  background: var(--color-surface);
  overflow-x: auto;
}

.page-features .feat-quota {
  width: 100%;
  min-width: 40rem;
  border-collapse: collapse;
  font-size: var(--text-sm);
}

.page-features .feat-quota__caption {
  caption-side: top;
  text-align: left;
  padding: var(--space-2) var(--space-3);
  font-family: var(--font-heading);
  font-size: var(--text-lg);
  font-weight: var(--weight-heading);
  color: var(--color-ink);
  border-bottom: 1px dashed var(--color-line);
  background: var(--color-surface-alt);
}

.page-features .feat-quota thead th {
  font-family: var(--font-mono);
  font-size: var(--text-xs);
  letter-spacing: 0.06em;
  text-transform: uppercase;
  color: var(--color-ink-soft);
  background: var(--color-surface-deep);
  padding: var(--space-2);
  text-align: left;
  border-bottom: var(--border-thick) solid var(--color-primary);
  white-space: nowrap;
}

.page-features .feat-quota tbody th,
.page-features .feat-quota tbody td {
  padding: var(--space-2);
  text-align: left;
  color: var(--color-ink);
  border-bottom: 1px dashed var(--color-line);
  white-space: nowrap;
}

.page-features .feat-quota__row:nth-child(odd) {
  background: var(--color-surface-alt);
}

.page-features .feat-quota__row:nth-child(even) {
  background: var(--color-surface-deep);
}

.page-features .feat-quota__row:hover {
  background: var(--color-highlight);
}

.page-features .feat-quota .tag {
  background: var(--color-accent);
  color: var(--color-accent-ink);
  border-radius: var(--radius-sm);
  padding: 2px var(--space-1);
  font-size: var(--text-xs);
}

/* ---------- 03 账户设置 ---------- */
.page-features .feat-setting {
  list-style: none;
  margin: 0;
  padding: 0;
  display: grid;
  gap: var(--space-2);
}

.page-features .feat-setting__item {
  position: relative;
  padding: var(--space-3);
  background: var(--color-surface-alt);
  border: var(--border-thick) solid var(--color-line);
  border-left: var(--border-thick) solid var(--color-primary);
  border-radius: var(--radius-sm);
  box-shadow: var(--shadow-1);
}

.page-features .feat-setting__item:hover {
  border-style: solid;
  border-color: var(--color-primary);
  box-shadow: var(--shadow-2);
}

.page-features .feat-setting__head {
  display: flex;
  flex-wrap: wrap;
  align-items: baseline;
  gap: var(--space-2);
  margin-bottom: var(--space-2);
}

.page-features .feat-setting__no {
  font-size: var(--text-sm);
  color: var(--color-primary);
  letter-spacing: 0.08em;
}

.page-features .feat-setting__name {
  margin: 0;
  font-family: var(--font-heading);
  font-size: var(--text-xl);
  font-weight: var(--weight-heading);
  color: var(--color-ink);
}

.page-features .feat-setting__head .tag {
  background: var(--color-primary-soft);
  color: var(--color-ink);
  border: 1px dashed var(--color-primary);
  border-radius: var(--radius-sm);
  padding: 2px var(--space-1);
  font-size: var(--text-xs);
}

.page-features .feat-setting__desc {
  margin: 0 0 var(--space-2);
  max-width: var(--measure);
  font-size: var(--text-base);
  line-height: var(--leading-body);
  color: var(--color-ink-soft);
}

.page-features .feat-setting__tip {
  position: relative;
  display: inline-block;
  padding: 2px var(--space-1);
  font-size: var(--text-xs);
  color: var(--color-accent);
  border-bottom: 1px dashed var(--color-accent);
  cursor: help;
}

.page-features .feat-setting__tip:focus-visible {
  outline: var(--border-thick) solid var(--color-focus);
  outline-offset: 2px;
}

.page-features .feat-setting__bubble {
  position: absolute;
  left: 0;
  bottom: calc(100% + var(--space-1));
  z-index: 5;
  width: max-content;
  max-width: 18rem;
  padding: var(--space-2);
  background: var(--color-contrast-surface);
  color: var(--color-contrast-ink);
  border: var(--border-thick) solid var(--color-contrast-line);
  border-radius: var(--radius-sm);
  font-size: var(--text-xs);
  line-height: 1.7;
  opacity: 0;
  visibility: hidden;
  transition: opacity 120ms ease-out;
}

.page-features .feat-setting__tip:hover .feat-setting__bubble,
.page-features .feat-setting__tip:focus-within .feat-setting__bubble {
  opacity: 1;
  visibility: visible;
}

/* ---------- 04 客服通道 ---------- */
.page-features .feat-support {
  display: grid;
  gap: var(--space-3);
}

.page-features .feat-support__card {
  border-radius: var(--radius-sm);
}

.page-features .feat-support__value {
  margin: 0 0 var(--space-2);
  font-size: var(--text-lg);
  font-weight: var(--weight-heading);
  letter-spacing: 0.02em;
  color: var(--color-accent);
  word-break: break-word;
}

.page-features .feat-support__list {
  margin: 0 0 var(--space-2);
  padding: 0;
  list-style: none;
  display: grid;
  gap: var(--space-1);
}

.page-features .feat-support__list li {
  position: relative;
  padding-left: var(--space-2);
  font-size: var(--text-sm);
  line-height: 1.7;
  color: var(--color-ink);
}

.page-features .feat-support__list li::before {
  content: "";
  position: absolute;
  left: 0;
  top: 0.62em;
  width: 5px;
  height: 5px;
  background: var(--color-primary);
}

/* ---------- 05 活动周期 ---------- */
.page-features .feat-cycle {
  position: relative;
  margin-top: var(--space-6);
}

.page-features .feat-cycle__curve {
  display: none;
  width: 100%;
  height: 4rem;
  margin-bottom: var(--space-2);
}

.page-features .feat-cycle__curve path {
  fill: none;
  stroke: var(--color-line);
  stroke-width: 2;
  stroke-dasharray: 7 6;
}

.page-features .feat-cycle__list {
  list-style: none;
  margin: 0;
  padding: 0;
  display: grid;
  gap: var(--space-3);
}

.page-features .feat-cycle__item {
  position: relative;
  padding: var(--space-3) var(--space-3) var(--space-3) var(--space-4);
  background: var(--color-surface-alt);
  border: var(--border-thick) solid var(--color-line);
  border-radius: var(--radius-sm);
}

.page-features .feat-cycle__item::before {
  content: "";
  position: absolute;
  left: 0;
  top: 50%;
  width: var(--space-3);
  height: var(--border-thick);
  background: var(--color-line);
  transform: translateY(-50%);
}

.page-features .feat-cycle__item--primary {
  background: var(--color-surface-deep);
  border-color: var(--color-primary);
}

.page-features .feat-cycle__item--primary::before {
  background: var(--color-primary);
}

.page-features .feat-cycle__mark {
  display: block;
  width: 0.75rem;
  height: 0.75rem;
  margin-bottom: var(--space-2);
  background: var(--color-accent);
  border-radius: var(--radius-sm);
  box-shadow: var(--shadow-2);
}

.page-features .feat-cycle__item--primary .feat-cycle__mark {
  background: var(--color-primary);
}

.page-features .feat-cycle__val {
  display: block;
  font-size: var(--text-sm);
  letter-spacing: 0.04em;
  color: var(--color-accent);
  margin-bottom: var(--space-1);
}

.page-features .feat-cycle__item--primary .feat-cycle__val {
  color: var(--color-primary);
}

.page-features .feat-cycle__name {
  display: block;
  font-family: var(--font-heading);
  font-size: var(--text-xl);
  font-weight: var(--weight-heading);
  color: var(--color-ink);
  margin-bottom: var(--space-2);
}

.page-features .feat-cycle__desc {
  margin: 0;
  font-size: var(--text-sm);
  line-height: var(--leading-body);
  color: var(--color-ink-soft);
}

/* ---------- 强对比区块内的文字校正 ---------- */
.page-features .section--contrast .section-title,
.page-features .section--contrast .feat-group__intro {
  color: var(--color-contrast-ink);
}

/* ---------- 动效 ---------- */
.page-features [data-reveal].is-revealed {
  opacity: 1;
  transform: none;
}

@media (prefers-reduced-motion: reduce) {
  .page-features .feat-log__chev,
  .page-features .feat-setting__bubble {
    transition: none;
  }
}

/* ---------- 悬停能力弱的设备：气泡常显 ---------- */
@media (hover: none) {
  .page-features .feat-setting__bubble {
    position: static;
    opacity: 1;
    visibility: visible;
    width: auto;
    max-width: none;
    margin-top: var(--space-2);
  }
}

/* ---------- 桌面栅格 ---------- */
@media (min-width: 56rem) {
  .page-features .feat-hero__grid {
    grid-template-columns: minmax(0, 7fr) minmax(0, 5fr);
    gap: var(--space-6);
    padding: var(--space-6);
    align-items: start;
  }

  .page-features .feat-hero__figures {
    grid-template-columns: repeat(2, minmax(0, 1fr));
  }

  .page-features .feat-group__intro-grid {
    grid-template-columns: minmax(0, 8fr) minmax(0, 4fr);
    align-items: start;
    gap: var(--space-6);
  }

  .page-features .feat-group__intro-grid--flip {
    grid-template-columns: minmax(0, 4fr) minmax(0, 8fr);
  }

  .page-features .feat-log__row {
    grid-template-columns: var(--feat-log-stripe) minmax(0, 1.8fr) minmax(0, 1fr) minmax(0, 1fr);
    gap: var(--space-3);
    align-items: baseline;
    padding: var(--space-2);
  }

  .page-features .feat-log__rows {
    padding: 0 var(--space-2);
  }

  .page-features .feat-support {
    grid-template-columns: repeat(3, minmax(0, 1fr));
  }

  .page-features .feat-cycle__curve {
    display: block;
  }

  .page-features .feat-cycle__list {
    grid-template-columns: repeat(4, minmax(0, 1fr));
    gap: var(--space-3);
  }

  .page-features .feat-cycle__item {
    padding: var(--space-3);
  }

  .page-features .feat-cycle__item::before {
    display: none;
  }
}

@media (min-width: 72rem) {
  .page-features .feat-setting {
    grid-template-columns: repeat(2, minmax(0, 1fr));
  }
}
</main>