/* ===== 能力清单 /capability/ ===== */
.page-features {
  background: var(--color-surface);
  color: var(--color-ink);
}

/* ---------- 首屏：深色反相框景 ---------- */
.page-features .fs-hero {
  position: relative;
  padding: var(--space-6) 0 var(--space-8);
  background: var(--color-contrast-surface);
  color: var(--color-contrast-ink);
  overflow: hidden;
}

.page-features .fs-hero::after {
  content: "";
  position: absolute;
  inset: 0 0 0 auto;
  width: calc(var(--space-1) + var(--border-thin));
  border-left: var(--border-thin) solid var(--color-contrast-line);
  background-image: repeating-linear-gradient(
    to bottom,
    var(--color-contrast-line) 0,
    var(--color-contrast-line) 1px,
    transparent 1px,
    transparent 14px
  );
  pointer-events: none;
}

.page-features .fs-hero__inner {
  position: relative;
  z-index: 1;
}

.page-features .fs-hero__crumb {
  margin-bottom: var(--space-6);
}

.page-features .fs-hero__crumb .breadcrumb__list {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  gap: calc(var(--space-1) * 0.5);
  margin: 0;
  padding: 0;
  list-style: none;
  font-family: var(--font-mono);
  font-size: var(--text-xs);
  letter-spacing: 0.04em;
  color: var(--color-contrast-ink);
}

.page-features .fs-hero__crumb .breadcrumb__list li + li::before {
  content: "/";
  margin-right: calc(var(--space-1) * 0.5);
  color: var(--color-contrast-line);
}

.page-features .fs-hero__crumb a {
  color: var(--color-contrast-ink);
  text-decoration: none;
  border-bottom: var(--border-thin) solid var(--color-contrast-line);
  transition: color 150ms ease, border-color 150ms ease;
}

.page-features .fs-hero__crumb a:hover,
.page-features .fs-hero__crumb a:focus-visible {
  color: var(--color-contrast-accent);
  border-bottom-color: var(--color-contrast-accent);
}

.page-features .fs-hero__grid {
  display: grid;
  grid-template-columns: minmax(0, 1fr);
  gap: var(--space-6);
  align-items: end;
}

.page-features .fs-hero__eyebrow {
  margin: 0 0 var(--space-2);
  font-family: var(--font-mono);
  font-size: var(--text-xs);
  letter-spacing: 0.12em;
  color: var(--color-contrast-accent);
}

.page-features .fs-hero__title {
  margin: 0 0 var(--space-3);
  font-family: var(--font-heading);
  font-weight: var(--weight-heading);
  font-size: var(--text-display);
  line-height: 1.03;
  letter-spacing: var(--tracking-heading);
  color: var(--color-contrast-ink);
  overflow-wrap: anywhere;
}

.page-features .fs-hero__intro {
  margin: 0;
  max-width: var(--measure);
  font-size: var(--text-base);
  line-height: var(--leading-body);
  color: var(--color-contrast-ink);
  opacity: 0.86;
}

.page-features .fs-reads {
  margin: 0;
  padding: 0;
  list-style: none;
  border-top: var(--border-thin) solid var(--color-contrast-line);
}

.page-features .fs-read {
  display: grid;
  grid-template-columns: minmax(0, 1fr);
  gap: calc(var(--space-1) * 0.5);
  padding: var(--space-3) 0;
  border-bottom: var(--border-thin) solid var(--color-contrast-line);
}

.page-features .fs-read__num {
  font-family: var(--font-mono);
  font-variant-numeric: tabular-nums;
  font-size: var(--text-figure);
  line-height: 1;
  font-weight: 600;
  letter-spacing: -0.02em;
  color: var(--color-contrast-accent);
}

.page-features .fs-read__desc {
  font-size: var(--text-sm);
  line-height: 1.62;
  color: var(--color-contrast-ink);
  opacity: 0.8;
}

@media (min-width: 560px) {
  .page-features .fs-read {
    grid-template-columns: minmax(0, auto) minmax(0, 1fr);
    align-items: baseline;
    gap: var(--space-3);
  }
}

@media (min-width: 960px) {
  .page-features .fs-hero__grid {
    grid-template-columns: minmax(0, 5fr) minmax(0, 7fr);
    gap: var(--space-8);
  }
}

/* ---------- 范围标签页 ---------- */
.page-features .fs-scope__head {
  display: grid;
  gap: var(--space-2);
  margin-bottom: var(--space-4);
}

.page-features .fs-scope__title {
  margin: 0;
  font-family: var(--font-heading);
  font-size: var(--text-3xl);
  font-weight: var(--weight-heading);
  line-height: var(--leading-heading);
  letter-spacing: var(--tracking-heading);
  color: var(--color-ink);
}

.page-features .fs-scope__note {
  margin: 0;
  max-width: var(--measure);
  font-size: var(--text-sm);
  line-height: 1.72;
}

@media (min-width: 880px) {
  .page-features .fs-scope__head {
    grid-template-columns: minmax(0, 1fr) minmax(0, 1fr);
    align-items: end;
    gap: var(--space-6);
  }
}

.page-features .fs-scope__tabs {
  border: var(--border-thin) solid var(--color-line);
  border-radius: var(--radius-lg);
  background: var(--color-surface-alt);
  box-shadow: var(--shadow-2);
  overflow: hidden;
}

.page-features .fs-tabbar {
  display: flex;
  flex-wrap: wrap;
  background: var(--color-surface-deep);
  border-bottom: var(--border-thin) solid var(--color-line);
}

.page-features .fs-tab {
  appearance: none;
  border: 0;
  border-right: var(--border-thin) solid var(--color-line);
  background: transparent;
  color: var(--color-ink-soft);
  font-family: var(--font-mono);
  font-size: var(--text-xs);
  letter-spacing: 0.06em;
  padding: var(--space-2) var(--space-3);
  cursor: pointer;
  transition: background-color 150ms ease, color 150ms ease;
}

.page-features .fs-tab:hover {
  background: var(--color-primary-soft);
  color: var(--color-ink);
}

.page-features .fs-tab:focus-visible {
  outline: 2px solid var(--color-focus);
  outline-offset: -2px;
}

.page-features .fs-tab[aria-selected="true"] {
  background: var(--color-primary);
  color: var(--color-primary-ink);
}

.page-features .fs-panel {
  padding: var(--space-3);
}

.page-features .fs-panel__lead {
  margin: 0 0 var(--space-2);
  font-size: var(--text-base);
  line-height: 1.78;
  color: var(--color-ink);
}

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

.page-features .fs-panel__list li {
  position: relative;
  padding-left: var(--space-3);
  font-size: var(--text-sm);
  line-height: 1.75;
  color: var(--color-ink-soft);
}

.page-features .fs-panel__list li::before {
  content: "";
  position: absolute;
  left: 0;
  top: 0.82em;
  width: calc(var(--space-1) + var(--border-thin));
  height: var(--border-thin);
  background: var(--color-accent);
}

/* ---------- 分组标题带 ---------- */
.page-features .fs-band {
  display: flex;
  flex-wrap: wrap;
  align-items: baseline;
  gap: var(--space-1) var(--space-3);
  margin: 0 0 var(--space-4);
  padding: var(--space-2) var(--space-3);
  background: var(--color-primary);
  color: var(--color-primary-ink);
  border-radius: var(--radius-md);
  box-shadow: calc(var(--space-1) * -0.75) calc(var(--space-1) * 0.75) 0 var(--color-surface-deep);
}

.page-features .fs-band__idx {
  font-family: var(--font-mono);
  font-size: var(--text-xs);
  letter-spacing: 0.1em;
  opacity: 0.72;
}

.page-features .fs-band__title {
  margin: 0;
  font-family: var(--font-heading);
  font-size: var(--text-2xl);
  font-weight: var(--weight-heading);
  line-height: 1.2;
  letter-spacing: var(--tracking-heading);
}

.page-features .fs-band__note {
  flex: 1 1 100%;
  margin: 0;
  max-width: 62ch;
  font-size: var(--text-sm);
  line-height: 1.68;
  opacity: 0.88;
}

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

.page-features .fs-group__lead a {
  color: var(--color-accent);
  text-decoration: none;
  border-bottom: var(--border-thin) solid currentColor;
}

.page-features .fs-group__lead a:hover {
  color: var(--color-focus);
}

/* ---------- 图片区 ---------- */
.page-features .fs-shot,
.page-features .fs-inline {
  position: relative;
  margin: 0 0 var(--space-6);
  border: var(--border-thin) solid var(--color-line);
  border-radius: var(--radius-md);
  background: var(--color-surface-deep);
  overflow: hidden;
}

.page-features .fs-shot {
  aspect-ratio: 21 / 9;
}

.page-features .fs-inline {
  aspect-ratio: 3 / 2;
  margin-top: var(--space-6);
}

.page-features .fs-shot img,
.page-features .fs-inline img {
  position: absolute;
  inset: 0;
  display: block;
  width: 100%;
  height: 100%;
  max-width: 100%;
  object-fit: cover;
}

.page-features .fs-shot .media__scrim,
.page-features .fs-inline .media__scrim {
  position: absolute;
  inset: 0;
  background: var(--overlay-scrim);
  pointer-events: none;
}

.page-features .fs-shot .media__caption,
.page-features .fs-inline .media__caption {
  position: absolute;
  inset: auto 0 0 0;
  margin: 0;
  padding: var(--space-2);
  font-family: var(--font-heading);
  font-size: var(--text-sm);
  line-height: 1.5;
  color: var(--color-contrast-ink);
}

@media (min-width: 720px) {
  .page-features .fs-shot .media__caption,
  .page-features .fs-inline .media__caption {
    padding: var(--space-3) var(--space-4);
    font-size: var(--text-lg);
  }
}

/* ---------- 能力条目 ---------- */
.page-features .fs-caps {
  display: grid;
  gap: var(--space-3);
}

.page-features .fs-cap {
  display: grid;
  grid-template-columns: minmax(0, 1fr);
  background: var(--color-surface-alt);
  border: var(--border-thin) solid var(--color-line);
  border-radius: var(--radius-md);
  box-shadow: var(--shadow-1);
  overflow: hidden;
  transition: box-shadow 150ms ease, border-color 150ms ease;
}

.page-features .fs-cap__main {
  padding: var(--space-3);
}

.page-features .fs-cap__title {
  margin: 0 0 var(--space-2);
  font-family: var(--font-heading);
  font-size: var(--text-xl);
  font-weight: var(--weight-heading);
  line-height: var(--leading-heading);
  letter-spacing: var(--tracking-heading);
  color: var(--color-ink);
}

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

.page-features .fs-cap__spec {
  margin: 0;
  padding: var(--space-2) var(--space-3) var(--space-3);
  border-top: var(--border-thin) solid var(--color-line);
}

.page-features .fs-spec {
  display: grid;
  grid-template-columns: minmax(0, 1fr);
  gap: calc(var(--space-1) * 0.5) 0;
  padding: var(--space-2) 0;
  border-bottom: var(--border-thin) solid var(--color-line);
}

.page-features .fs-spec:last-child {
  padding-bottom: 0;
  border-bottom: 0;
}

.page-features .fs-spec__key {
  margin: 0;
  font-family: var(--font-mono);
  font-size: var(--text-xs);
  letter-spacing: 0.08em;
  color: var(--color-ink-muted);
}

.page-features .fs-spec__val {
  margin: 0;
  font-size: var(--text-sm);
  line-height: 1.75;
  color: var(--color-ink-soft);
}

.page-features .fs-spec__val a {
  color: var(--color-accent);
  text-decoration: none;
  border-bottom: var(--border-thin) solid currentColor;
}

.page-features .fs-spec__val a:hover {
  color: var(--color-focus);
}

@media (min-width: 480px) {
  .page-features .fs-spec {
    grid-template-columns: calc(var(--space-8) + var(--space-1)) minmax(0, 1fr);
    gap: 0 var(--space-2);
    align-items: baseline;
  }
}

@media (min-width: 880px) {
  .page-features .fs-cap {
    grid-template-columns: minmax(0, 5fr) minmax(0, 7fr);
  }

  .page-features .fs-cap__main {
    padding: var(--space-4);
  }

  .page-features .fs-cap__spec {
    padding: var(--space-4);
    border-top: 0;
    border-left: var(--border-thin) solid var(--color-line);
    transition: background-color 150ms ease;
  }

  .page-features .fs-cap:hover,
  .page-features .fs-cap:focus-within {
    box-shadow: var(--shadow-2);
    border-color: var(--color-ink-muted);
  }

  .page-features .fs-cap:hover .fs-cap__spec,
  .page-features .fs-cap:focus-within .fs-cap__spec {
    background: var(--color-primary-soft);
  }
}

/* ---------- 边界清单 ---------- */
.page-features .fs-limits__quote {
  margin: var(--space-4) 0 var(--space-4);
  padding: var(--space-3) var(--space-3) var(--space-3) var(--space-4);
  background: var(--color-highlight);
  border-left: 4px solid var(--color-accent);
  border-radius: 0 var(--radius-md) var(--radius-md) 0;
  font-family: var(--font-heading);
  font-size: var(--text-lg);
  line-height: 1.5;
  color: var(--color-ink);
}

.page-features .fs-limits__list {
  display: grid;
  border-top: var(--border-thin) solid var(--color-line);
}

.page-features .fs-limit {
  display: grid;
  grid-template-columns: minmax(0, 1fr);
  gap: var(--space-1);
  padding: var(--space-3) 0;
  border-bottom: var(--border-thin) solid var(--color-line);
}

.page-features .fs-limit__claim {
  margin: 0;
  padding-left: var(--space-3);
  border-left: 2px solid var(--color-accent);
  font-family: var(--font-heading);
  font-size: var(--text-lg);
  line-height: 1.5;
  color: var(--color-ink);
}

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

@media (min-width: 880px) {
  .page-features .fs-limit {
    grid-template-columns: minmax(0, 6fr) minmax(0, 6fr);
    gap: var(--space-4);
    align-items: start;
  }
}

/* ---------- 出口带 ---------- */
.page-features .fs-exit {
  display: grid;
  gap: var(--space-3);
  align-items: start;
}

.page-features .fs-exit__text {
  margin: 0;
  max-width: var(--measure);
  font-size: var(--text-base);
  line-height: var(--leading-body);
}

.page-features .fs-exit__actions {
  display: flex;
  flex-wrap: wrap;
  gap: var(--space-2);
}

@media (min-width: 880px) {
  .page-features .fs-exit {
    grid-template-columns: minmax(0, 1fr) auto;
    align-items: center;
    gap: var(--space-6);
  }
}

/* ---------- 窄屏兜底 ---------- */
@media (max-width: 420px) {
  .page-features .fs-band {
    padding: var(--space-2);
    box-shadow: calc(var(--space-1) * -0.5) calc(var(--space-1) * 0.5) 0 var(--color-surface-deep);
  }

  .page-features .fs-hero__crumb {
    margin-bottom: var(--space-4);
  }

  .page-features .fs-exit__actions {
    flex-direction: column;
  }

  .page-features .fs-exit__actions .btn {
    width: 100%;
    text-align: center;
  }
}
<<<END>>>