/* ===== 功能特性页 · 作用域 .page-features ===== */

.page-features .feat-deco {
  position: absolute;
  pointer-events: none;
  z-index: 0;
}

.page-features .feat-hero {
  position: relative;
  overflow: hidden;
}

.page-features .feat-deco--wedge {
  top: 12%;
  right: -60px;
  width: 220px;
  height: 56px;
  background: var(--color-primary);
  transform: skewX(-24deg);
  opacity: 0.9;
}

.page-features .feat-deco--dot {
  bottom: 8%;
  left: -36px;
  width: 140px;
  height: 140px;
  border-radius: var(--radius-pill);
  background: var(--color-contrast-accent);
  opacity: 0.22;
}

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

.page-features .feat-hero__crumbs,
.page-features .feat-hero__crumbs a {
  color: var(--color-contrast-ink);
}

.page-features .feat-hero__crumbs {
  margin-bottom: var(--space-6);
}

.page-features .feat-hero__grid {
  display: grid;
  gap: var(--space-6);
}

.page-features .feat-hero__eyebrow {
  color: var(--color-contrast-accent);
}

.page-features .feat-hero__title {
  font-family: var(--font-heading);
  font-weight: var(--weight-heading);
  font-size: var(--text-display);
  line-height: var(--leading-heading);
  letter-spacing: var(--tracking-heading);
  color: var(--color-contrast-ink);
  margin: var(--space-3) 0 var(--space-4);
}

.page-features .feat-hero__intro {
  max-width: var(--measure);
  color: var(--color-contrast-ink);
  opacity: 0.86;
  margin: 0;
}

.page-features .feat-hero__shot {
  margin: 0;
  position: relative;
}

.page-features .feat-hero__shot img {
  display: block;
  width: 100%;
  height: auto;
  object-fit: cover;
}

.page-features .feat-hero__caption {
  color: var(--color-contrast-ink);
  opacity: 0.78;
}

.page-features .feat-hero__figures {
  list-style: none;
  margin: var(--space-8) 0 0;
  padding: var(--space-6) 0 0;
  border-top: var(--border-thin) solid var(--color-contrast-line);
  display: grid;
  gap: var(--space-4);
}

.page-features .feat-figure__num {
  display: block;
  font-family: var(--font-mono);
  font-size: var(--text-figure);
  font-weight: var(--weight-heading);
  font-variant-numeric: tabular-nums;
  line-height: 1;
  color: var(--color-contrast-accent);
}

.page-features .feat-figure__unit {
  display: block;
  margin-top: var(--space-1);
  font-family: var(--font-heading);
  font-weight: var(--weight-heading);
  font-size: var(--text-lg);
  color: var(--color-contrast-ink);
}

.page-features .feat-figure__desc {
  margin: var(--space-2) 0 0;
  font-size: var(--text-sm);
  color: var(--color-contrast-ink);
  opacity: 0.76;
}

/* ---- 档位 ---- */

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

.page-features .feat-tier {
  background: var(--color-surface);
  border: var(--border-thin) solid var(--color-line);
  border-radius: var(--radius-lg);
  padding: var(--space-4);
  display: flex;
  flex-direction: column;
  gap: var(--space-2);
}

.page-features .feat-tier__badge {
  align-self: flex-start;
}

.page-features .feat-tier__name {
  font-family: var(--font-heading);
  font-weight: var(--weight-heading);
  font-size: var(--text-lg);
  line-height: var(--leading-heading);
  color: var(--color-ink);
  margin: 0;
}

.page-features .feat-tier__spec {
  margin: 0;
  display: grid;
  gap: var(--space-2);
}

.page-features .feat-tier__row {
  display: grid;
  gap: 2px;
}

.page-features .feat-tier__row dt {
  font-size: var(--text-xs);
  letter-spacing: 0.18em;
  font-family: var(--font-heading);
  font-weight: var(--weight-heading);
  color: var(--color-ink-muted);
}

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

.page-features .feat-tier__advice {
  margin: auto 0 0;
  padding-top: var(--space-2);
  border-top: var(--border-thin) solid var(--color-line);
  font-family: var(--font-heading);
  font-weight: var(--weight-heading);
  font-size: var(--text-sm);
  color: var(--color-primary);
}

.page-features .feat-tier--season {
  background: var(--color-contrast-surface);
  border-color: var(--color-contrast-surface);
  border-radius: var(--radius-lg);
  box-shadow: 8px 8px 0 var(--color-primary);
}

.page-features .feat-tier--season .feat-tier__name {
  color: var(--color-contrast-ink);
}

.page-features .feat-tier--season .feat-tier__row dt {
  color: var(--color-contrast-accent);
}

.page-features .feat-tier--season .feat-tier__row dd {
  color: var(--color-contrast-ink);
  opacity: 0.88;
}

.page-features .feat-tier--season .feat-tier__advice {
  border-top-color: var(--color-contrast-line);
  color: var(--color-contrast-accent);
}

/* ---- 主场地图 ---- */

.page-features .feat-map__grid {
  display: grid;
  gap: var(--space-6);
}

.page-features .feat-map__para {
  max-width: var(--measure);
}

.page-features .feat-map__keys {
  list-style: none;
  margin: var(--space-3) 0;
  padding: 0;
  display: grid;
  gap: var(--space-2);
}

.page-features .feat-map__keys li {
  position: relative;
  padding-left: var(--space-4);
  font-size: var(--text-sm);
  color: var(--color-ink-soft);
}

.page-features .feat-map__keys li::before {
  content: "";
  position: absolute;
  left: 0;
  top: 0.55em;
  width: 12px;
  height: 12px;
  border-radius: var(--radius-pill);
  background: var(--color-primary);
}

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

.page-features .feat-map__note a {
  color: var(--color-accent);
  font-weight: var(--weight-heading);
}

.page-features .feat-map__board {
  background: var(--color-contrast-surface);
  border-radius: var(--radius-lg);
  padding: var(--space-3);
  color: var(--color-contrast-line);
}

.page-features .feat-map__svg {
  display: block;
  width: 100%;
  height: auto;
}

.page-features .feat-map__plot rect {
  fill: color-mix(in srgb, var(--color-primary) 42%, var(--color-contrast-surface));
  stroke: var(--color-contrast-accent);
  stroke-width: 2;
  transition: fill 160ms ease;
}

.page-features .feat-map__plot text {
  fill: var(--color-contrast-ink);
  font-family: var(--font-mono);
  font-size: 15px;
  font-variant-numeric: tabular-nums;
  text-anchor: middle;
}

.page-features .feat-map__plot:hover rect,
.page-features .feat-map__plot:focus-within rect {
  fill: var(--color-contrast-accent);
}

.page-features .feat-map__legend {
  list-style: none;
  margin: var(--space-3) 0 0;
  padding: 0;
  display: flex;
  flex-wrap: wrap;
  gap: var(--space-1);
}

.page-features .feat-map__legend li {
  font-size: var(--text-xs);
  letter-spacing: 0.12em;
  padding: 6px 14px;
  border-radius: var(--radius-pill);
  background: color-mix(in srgb, var(--color-contrast-ink) 14%, transparent);
  color: var(--color-contrast-ink);
}

/* ---- 补时切换 ---- */

.page-features .feat-stoppage__tags {
  display: flex;
  flex-wrap: wrap;
  gap: var(--space-1);
  margin-bottom: var(--space-4);
}

.page-features .feat-stop-label {
  cursor: pointer;
  border: var(--border-thin) solid var(--color-line);
  border-radius: var(--radius-pill);
  padding: 10px 20px;
  font-family: var(--font-heading);
  font-weight: var(--weight-heading);
  font-size: var(--text-sm);
  background: var(--color-surface);
  color: var(--color-ink);
  transition: background 140ms ease, border-color 140ms ease;
}

.page-features #feat-stop-1:checked ~ .feat-stoppage__tags [for="feat-stop-1"],
.page-features #feat-stop-2:checked ~ .feat-stoppage__tags [for="feat-stop-2"],
.page-features #feat-stop-3:checked ~ .feat-stoppage__tags [for="feat-stop-3"],
.page-features #feat-stop-4:checked ~ .feat-stoppage__tags [for="feat-stop-4"] {
  background: var(--color-highlight);
  border-color: var(--color-primary);
  border-width: var(--border-thick);
}

.page-features .feat-stop-input:focus-visible ~ .feat-stoppage__tags [for="feat-stop-1"],
.page-features .feat-stop-input:focus-visible ~ .feat-stoppage__tags [for="feat-stop-2"],
.page-features .feat-stop-input:focus-visible ~ .feat-stoppage__tags [for="feat-stop-3"],
.page-features .feat-stop-input:focus-visible ~ .feat-stoppage__tags [for="feat-stop-4"] {
  outline: var(--border-thin) solid var(--color-focus);
  outline-offset: 3px;
}

.page-features .feat-stoppage__panel {
  display: none;
  gap: var(--space-3);
  background: var(--color-surface);
  border: var(--border-thin) solid var(--color-line);
  border-radius: var(--radius-lg);
  padding: var(--space-4);
}

.page-features #feat-stop-1:checked ~ .feat-stoppage__panels > :nth-child(1),
.page-features #feat-stop-2:checked ~ .feat-stoppage__panels > :nth-child(2),
.page-features #feat-stop-3:checked ~ .feat-stoppage__panels > :nth-child(3),
.page-features #feat-stop-4:checked ~ .feat-stoppage__panels > :nth-child(4) {
  display: grid;
}

.page-features .feat-stop-cell {
  display: grid;
  gap: var(--space-1);
}

.page-features .feat-stop-cell__label {
  font-size: var(--text-xs);
  letter-spacing: 0.16em;
  font-family: var(--font-heading);
  font-weight: var(--weight-heading);
  color: var(--color-ink-muted);
}

.page-features .feat-stop-cell__value {
  font-family: var(--font-mono);
  font-size: var(--text-2xl);
  font-weight: var(--weight-heading);
  font-variant-numeric: tabular-nums;
  line-height: 1;
  color: var(--color-accent);
}

.page-features .feat-stop-cell__value--word {
  font-family: var(--font-heading);
  font-size: var(--text-lg);
  color: var(--color-ink);
}

.page-features .feat-stoppage__shot {
  margin: var(--space-6) 0 0;
}

.page-features .feat-stoppage__shot img {
  display: block;
  width: 100%;
  height: auto;
  object-fit: cover;
}

.page-features .feat-stoppage__link {
  margin-top: var(--space-4);
  font-size: var(--text-sm);
  color: var(--color-ink-soft);
}

.page-features .feat-stoppage__link a {
  color: var(--color-accent);
  font-weight: var(--weight-heading);
}

/* ---- 资源包 ---- */

.page-features .feat-packs__rail {
  display: grid;
  grid-auto-flow: column;
  grid-auto-columns: minmax(268px, 84%);
  gap: var(--space-3);
  overflow-x: auto;
  scroll-snap-type: x proximity;
  scroll-padding-left: var(--space-3);
  max-width: var(--container);
  margin: 0 auto;
  padding: var(--space-2) var(--space-3) var(--space-4);
}

.page-features .feat-packs__rail:focus-visible {
  outline: var(--border-thin) solid var(--color-focus);
  outline-offset: 4px;
}

.page-features .feat-pack {
  scroll-snap-align: start;
  background: var(--color-surface);
  border: var(--border-thin) solid var(--color-primary);
  border-radius: var(--radius-lg);
  padding: var(--space-4);
  box-shadow: 6px 6px 0 var(--color-accent);
  display: flex;
  flex-direction: column;
  gap: var(--space-2);
}

.page-features .feat-pack__index {
  font-family: var(--font-mono);
  font-size: var(--text-sm);
  letter-spacing: 0.18em;
  font-weight: var(--weight-heading);
  color: var(--color-accent);
  margin: 0;
}

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

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

.page-features .feat-pack__list li {
  position: relative;
  padding-left: var(--space-3);
  font-size: var(--text-sm);
  color: var(--color-ink-soft);
}

.page-features .feat-pack__list li::before {
  content: "";
  position: absolute;
  left: 0;
  top: 0.6em;
  width: 10px;
  height: 10px;
  border-radius: 3px;
  background: var(--color-primary-soft);
  border: var(--border-thin) solid var(--color-primary);
}

.page-features .feat-pack__meta {
  margin: auto 0 0;
  padding-top: var(--space-2);
  border-top: var(--border-thin) solid var(--color-line);
  font-size: var(--text-xs);
  color: var(--color-ink-muted);
}

.page-features .feat-packs__foot {
  margin-top: var(--space-4);
}

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

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

.page-features .feat-packs__link a {
  color: var(--color-accent);
  font-weight: var(--weight-heading);
}

/* ---- 出口 ---- */

.page-features .feat-cta__inner {
  position: relative;
  overflow: hidden;
  border-radius: var(--radius-lg);
  min-height: 340px;
  display: grid;
  align-items: end;
  padding: var(--space-6) var(--space-4);
  border: var(--border-thin) solid var(--color-contrast-line);
}

.page-features .feat-cta__bg {
  position: absolute;
  inset: 0;
  width: 100%;
  height: 100%;
  object-fit: cover;
}

.page-features .feat-cta__scrim {
  position: absolute;
  inset: 0;
  background: var(--overlay-scrim);
}

.page-features .feat-cta__copy {
  position: relative;
  z-index: 1;
  max-width: 46ch;
}

.page-features .feat-cta__title {
  color: var(--color-contrast-ink);
  margin: 0 0 var(--space-2);
}

.page-features .feat-cta__para {
  color: var(--color-contrast-ink);
  opacity: 0.88;
  margin: 0 0 var(--space-4);
}

.page-features .feat-cta__action {
  margin: 0;
}

/* ---- 响应式 ---- */

@media (min-width: 720px) {
  .page-features .feat-hero__figures {
    grid-template-columns: repeat(3, minmax(0, 1fr));
    align-items: start;
  }

  .page-features .feat-figure--b {
    margin-top: var(--space-6);
  }

  .page-features .feat-figure--c {
    margin-top: var(--space-3);
  }

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

  .page-features .feat-packs__rail {
    grid-auto-columns: minmax(296px, 340px);
  }
}

@media (min-width: 960px) {
  .page-features .feat-hero__grid {
    grid-template-columns: minmax(0, 5fr) minmax(0, 4fr);
    align-items: end;
    gap: var(--space-8);
  }

  .page-features .feat-hero__title {
    max-width: 12ch;
  }

  .page-features .feat-tiers__grid {
    grid-template-columns: minmax(0, 0.85fr) minmax(0, 1.35fr) minmax(0, 0.95fr);
    align-items: start;
    gap: var(--space-3);
  }

  .page-features .feat-tier--season {
    transform: translateY(calc(var(--space-4) * -1));
  }

  .page-features .feat-map__grid {
    grid-template-columns: minmax(0, 4fr) minmax(0, 5fr);
    align-items: center;
    gap: var(--space-8);
  }
}