/* ===================================================
   page-features · 玩法规则
   作用域：.page-features
   =================================================== */

.page-features .fx-h2 {
  margin: 0 0 var(--space-3);
  font-family: var(--font-heading);
  font-size: var(--text-2xl);
  font-weight: var(--weight-heading);
  line-height: var(--leading-heading);
  letter-spacing: 0.04em;
  color: var(--color-ink);
}

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

.page-features .fx-link {
  color: var(--color-accent);
  text-decoration: underline;
  text-decoration-style: dashed;
  text-underline-offset: 4px;
}

.page-features .fx-link:hover,
.page-features .fx-link:focus-visible {
  color: var(--color-focus);
}

.page-features .fx-link--contrast {
  color: var(--color-contrast-accent);
}

/* ---------- 首屏 ---------- */

.page-features .fx-hero {
  position: relative;
  padding-block: calc(var(--section-y) * 0.5) var(--section-y-lg);
  background:
    radial-gradient(120% 100% at 92% 2%, color-mix(in srgb, var(--color-highlight) 78%, transparent) 0%, transparent 56%),
    radial-gradient(95% 85% at 2% 98%, color-mix(in srgb, var(--color-primary-soft) 82%, transparent) 0%, transparent 62%),
    var(--color-surface);
  overflow: hidden;
}

.page-features .fx-hero__inner {
  display: grid;
  gap: var(--space-3);
}

.page-features .fx-hero__title {
  margin: 0;
  font-family: var(--font-heading);
  font-size: var(--text-display);
  font-weight: var(--weight-heading);
  line-height: 1.06;
  letter-spacing: 0.04em;
  color: var(--color-ink);
  max-width: 20ch;
}

.page-features .fx-hero__lead {
  max-width: var(--measure);
  margin: var(--space-1) 0 0;
  font-size: var(--text-lg);
  line-height: var(--leading-body);
  color: var(--color-ink-soft);
}

/* 数字条：深底 + 柔和渐变叠层 */

.page-features .fx-figures {
  display: grid;
  gap: var(--space-4);
  margin-top: var(--space-8);
  padding: var(--space-6) var(--space-4);
  border-radius: var(--radius-lg);
  background:
    radial-gradient(90% 140% at 100% 0%, color-mix(in srgb, var(--color-contrast-accent) 26%, transparent) 0%, transparent 58%),
    radial-gradient(75% 130% at 0% 100%, color-mix(in srgb, var(--color-primary) 62%, transparent) 0%, transparent 64%),
    var(--color-contrast-surface);
  color: var(--color-contrast-ink);
  box-shadow: var(--shadow-2);
}

.page-features .fx-figures__item {
  display: grid;
  gap: var(--space-1);
}

.page-features .fx-figures__num {
  display: block;
  font-family: var(--font-heading);
  font-size: var(--text-figure);
  font-weight: var(--weight-heading);
  line-height: 1;
  letter-spacing: -0.01em;
  color: var(--color-contrast-accent);
}

.page-features .fx-figures__label {
  display: block;
  font-size: var(--text-lg);
  font-weight: var(--weight-heading);
  letter-spacing: 0.06em;
  color: var(--color-contrast-ink);
}

.page-features .fx-figures__note {
  display: block;
  font-size: var(--text-sm);
  line-height: 1.6;
  color: color-mix(in srgb, var(--color-contrast-ink) 72%, transparent);
}

/* ---------- 矩阵：筛选与分组 ---------- */

.page-features .fx-matrix__head {
  display: grid;
  gap: var(--space-3);
  margin-bottom: var(--space-8);
}

.page-features .fx-matrix__head .filter-bar {
  display: flex;
  flex-wrap: wrap;
  gap: var(--space-2);
}

.page-features .fx-matrix__head .filter-btn {
  min-height: 44px;
  padding: 0 var(--space-3);
  border: var(--border-thin) dashed var(--color-line);
  border-radius: var(--radius-pill);
  background: var(--color-surface);
  color: var(--color-ink-soft);
  font-family: var(--font-body);
  font-size: var(--text-sm);
  cursor: pointer;
  transition: background-color 240ms ease, border-color 240ms ease, color 240ms ease;
}

.page-features .fx-matrix__head .filter-btn[aria-pressed="true"] {
  background: var(--color-highlight);
  border-color: var(--color-focus);
  color: var(--color-ink);
}

.page-features .fx-matrix__head .filter-btn:focus-visible {
  outline: 2px solid var(--color-focus);
  outline-offset: 2px;
}

.page-features .fx-matrix__list {
  display: grid;
  gap: 0;
}

.page-features .fx-group {
  display: grid;
  gap: var(--space-4);
  padding-block: var(--space-8);
}

.page-features .fx-group + .fx-group {
  border-top: var(--border-thin) dotted var(--color-line);
}

.page-features .fx-group__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: 0.04em;
  color: var(--color-ink);
}

.page-features .fx-group__aside {
  margin: 0;
  padding-left: var(--space-2);
  border-left: 3px solid var(--color-primary);
  font-size: var(--text-sm);
  line-height: 1.7;
  color: var(--color-ink-muted);
}

/* ---------- 要点列表 ---------- */

.page-features .fx-points {
  display: grid;
  gap: var(--space-4);
  margin: var(--space-4) 0 0;
  padding: 0;
  list-style: none;
}

.page-features .fx-points__item {
  display: grid;
  grid-template-columns: 14px minmax(0, 1fr);
  gap: var(--space-2);
}

.page-features .fx-dot {
  width: 10px;
  height: 10px;
  margin-top: 0.55em;
  border-radius: var(--radius-pill);
  background: color-mix(in srgb, var(--color-primary) 52%, transparent);
}

.page-features .fx-points__lead {
  margin: 0 0 var(--space-1);
  font-size: var(--text-base);
  font-weight: var(--weight-heading);
  line-height: var(--leading-heading);
  color: var(--color-ink);
}

.page-features .fx-points__text {
  margin: 0;
  font-size: var(--text-base);
  line-height: 1.75;
  color: var(--color-ink-soft);
}

.page-features .fx-points .collapse {
  margin-top: var(--space-1);
}

.page-features .fx-points .collapse__trigger {
  display: inline-flex;
  align-items: center;
  gap: var(--space-1);
  padding: 0 0 2px;
  border: 0;
  border-bottom: var(--border-thin) dashed currentColor;
  background: none;
  color: var(--color-accent);
  font-family: var(--font-body);
  font-size: var(--text-sm);
  cursor: pointer;
}

.page-features .fx-points .collapse__trigger:focus-visible {
  outline: 2px solid var(--color-focus);
  outline-offset: 3px;
}

.page-features .fx-points .collapse__panel p {
  margin: var(--space-1) 0 0;
  font-size: var(--text-sm);
  line-height: 1.75;
  color: var(--color-ink-muted);
}

/* ---------- 组内视觉 ---------- */

.page-features .media {
  margin: 0;
  border-radius: var(--radius-lg);
  overflow: hidden;
  background: var(--color-primary-soft);
}

.page-features .media__img {
  display: block;
  width: 100%;
  max-width: 100%;
  height: auto;
  object-fit: cover;
}

.page-features .fx-tiers {
  display: grid;
  gap: var(--space-3);
  padding: var(--space-4);
  border: var(--border-thin) dashed color-mix(in srgb, var(--color-primary) 42%, transparent);
  border-radius: var(--radius-lg);
  background:
    radial-gradient(120% 120% at 100% 0%, color-mix(in srgb, var(--color-highlight) 90%, transparent) 0%, transparent 62%),
    var(--color-primary-soft);
}

.page-features .fx-tiers__title {
  margin: 0;
  font-size: var(--text-sm);
  font-weight: var(--weight-heading);
  letter-spacing: 0.08em;
  color: var(--color-ink);
}

.page-features .fx-tiers__list {
  display: grid;
  grid-template-columns: repeat(3, minmax(0, 1fr));
  gap: var(--space-2);
  margin: 0;
  padding: 0;
  list-style: none;
}

.page-features .fx-tiers__item {
  display: grid;
  gap: 2px;
  padding: var(--space-2);
  border-radius: var(--radius-sm);
  background: color-mix(in srgb, var(--color-surface) 76%, transparent);
  text-align: center;
}

.page-features .fx-tiers__num {
  font-family: var(--font-heading);
  font-size: var(--text-2xl);
  font-weight: var(--weight-heading);
  line-height: 1;
  color: var(--color-primary);
}

.page-features .fx-tiers__label {
  font-size: var(--text-xs);
  color: var(--color-ink-muted);
}

.page-features .fx-tiers__note {
  margin: 0;
  font-size: var(--text-sm);
  line-height: 1.7;
  color: var(--color-ink-soft);
}

/* ---------- 两端对照 ---------- */

.page-features .fx-compare__figure {
  margin: var(--space-6) 0 0;
}

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

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

.page-features .fx-compare__badge {
  display: inline-flex;
  align-items: center;
  padding: var(--space-1) var(--space-3);
  border-radius: var(--radius-pill);
  font-size: var(--text-sm);
  font-weight: var(--weight-heading);
  letter-spacing: 0.06em;
}

.page-features .fx-compare__badge--pc {
  background: color-mix(in srgb, var(--color-primary) 18%, var(--color-surface));
  color: var(--color-primary);
}

.page-features .fx-compare__badge--mb {
  background: color-mix(in srgb, var(--color-accent) 18%, var(--color-surface));
  color: var(--color-accent);
}

.page-features .fx-compare__row {
  display: grid;
  gap: var(--space-3);
  padding-top: var(--space-4);
  border-top: var(--border-thin) dotted var(--color-line);
}

.page-features .fx-compare__topic {
  margin: 0;
  font-family: var(--font-heading);
  font-size: var(--text-lg);
  font-weight: var(--weight-heading);
  line-height: var(--leading-heading);
  letter-spacing: 0.04em;
  color: var(--color-ink);
}

.page-features .fx-compare__grid {
  display: grid;
  gap: var(--space-3);
}

.page-features .fx-compare__side {
  padding: var(--space-3);
  border: var(--border-thin) dashed var(--color-line);
  border-radius: var(--radius-md);
  background: var(--color-surface);
}

.page-features .fx-compare__side p {
  margin: 0;
  font-size: var(--text-base);
  line-height: 1.75;
  color: var(--color-ink-soft);
}

.page-features .fx-compare__tag {
  margin: 0 0 var(--space-1);
  font-size: var(--text-xs);
  font-weight: var(--weight-heading);
  letter-spacing: 0.12em;
  text-transform: uppercase;
  color: var(--color-ink-muted);
}

/* ---------- 赛季切换 ---------- */

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

.page-features .fx-season__list {
  display: grid;
  gap: var(--space-4);
  margin: var(--space-6) 0 0;
  padding: 0;
  list-style: none;
}

.page-features .fx-season__item {
  padding-left: var(--space-3);
  border-left: 3px solid color-mix(in srgb, var(--color-accent) 55%, transparent);
}

.page-features .fx-season__item h3 {
  margin: 0 0 var(--space-1);
  font-family: var(--font-heading);
  font-size: var(--text-base);
  font-weight: var(--weight-heading);
  letter-spacing: 0.04em;
  color: var(--color-ink);
}

.page-features .fx-season__item p {
  margin: 0;
  font-size: var(--text-base);
  line-height: 1.75;
  color: var(--color-ink-soft);
}

.page-features .fx-season__note {
  margin: var(--space-6) 0 0;
  font-size: var(--text-sm);
  line-height: 1.8;
  color: var(--color-ink-muted);
}

/* ---------- 常见疑问 ---------- */

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

.page-features .fx-faq__aside-note {
  margin: var(--space-3) 0 0;
  font-size: var(--text-sm);
  line-height: 1.8;
  color: var(--color-ink-muted);
}

.page-features .fx-faq {
  display: grid;
  gap: 0;
  align-content: start;
}

.page-features .fx-faq__item {
  border-top: var(--border-thin) dotted var(--color-line);
  padding-block: var(--space-2);
}

.page-features .fx-faq__item:first-child {
  border-top: 0;
  padding-top: 0;
}

.page-features .fx-faq__q {
  width: 100%;
  display: flex;
  align-items: baseline;
  justify-content: space-between;
  gap: var(--space-3);
  padding: var(--space-2) 0;
  border: 0;
  background: none;
  font-family: var(--font-heading);
  font-size: var(--text-base);
  font-weight: var(--weight-heading);
  line-height: var(--leading-heading);
  letter-spacing: 0.03em;
  text-align: left;
  color: var(--color-ink);
  cursor: pointer;
}

.page-features .fx-faq__q:focus-visible {
  outline: 2px solid var(--color-focus);
  outline-offset: 3px;
}

.page-features .fx-faq .collapse__panel p {
  margin: 0 0 var(--space-2);
  max-width: var(--measure);
  font-size: var(--text-base);
  line-height: 1.78;
  color: var(--color-ink-soft);
}

/* ---------- 行动出口 ---------- */

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

.page-features .fx-next__title {
  margin: 0 0 var(--space-3);
  font-family: var(--font-heading);
  font-size: var(--text-3xl);
  font-weight: var(--weight-heading);
  line-height: var(--leading-heading);
  letter-spacing: 0.04em;
  color: var(--color-contrast-ink);
}

.page-features .fx-next__text {
  max-width: var(--measure);
  margin: 0 0 var(--space-3);
  font-size: var(--text-base);
  line-height: 1.8;
  color: color-mix(in srgb, var(--color-contrast-ink) 86%, transparent);
}

.page-features .fx-next__paths {
  display: flex;
  flex-wrap: wrap;
  gap: var(--space-2);
  align-content: start;
}

.page-features .fx-next__paths .btn {
  min-height: 48px;
  padding-inline: var(--space-4);
  border-radius: var(--radius-sm);
  font-family: var(--font-body);
  font-size: var(--text-base);
  font-weight: var(--weight-heading);
  text-decoration: none;
}

/* ---------- 响应式 ---------- */

@media (min-width: 720px) {
  .page-features .fx-figures {
    grid-template-columns: repeat(3, minmax(0, 1fr));
    gap: var(--space-4);
    padding: var(--space-6) var(--space-6);
  }

  .page-features .fx-figures__item + .fx-figures__item {
    padding-left: var(--space-4);
    border-left: var(--border-thin) dotted var(--color-contrast-line);
  }

  .page-features .fx-next__paths {
    flex-wrap: nowrap;
  }
}

@media (min-width: 880px) {
  .page-features .fx-hero__inner {
    gap: var(--space-4);
  }

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

  .page-features .fx-group {
    grid-template-columns: minmax(0, 7fr) minmax(0, 4fr);
    gap: var(--gutter);
    align-items: start;
  }

  .page-features .fx-group--flip {
    grid-template-columns: minmax(0, 4fr) minmax(0, 7fr);
  }

  .page-features .fx-group--flip > .fx-group__body {
    grid-column: 2;
    grid-row: 1;
  }

  .page-features .fx-group--flip > .fx-group__media {
    grid-column: 1;
    grid-row: 1;
  }

  .page-features .fx-group > .fx-group__media {
    grid-column: 2;
    grid-row: 1;
  }

  .page-features .fx-group > .fx-group__body {
    grid-column: 1;
    grid-row: 1;
  }

  .page-features .fx-compare__grid {
    grid-template-columns: minmax(0, 1fr) minmax(0, 1fr);
    gap: var(--space-4);
  }

  .page-features .fx-faq__layout {
    grid-template-columns: minmax(0, 4fr) minmax(0, 7fr);
    gap: var(--gutter);
    align-items: start;
  }

  .page-features .fx-next__grid {
    grid-template-columns: minmax(0, 7fr) minmax(0, 4fr);
    gap: var(--gutter);
    align-items: end;
  }

  .page-features .fx-next__paths {
    justify-content: flex-end;
  }
}

@media (min-width: 1000px) {
  .page-features .fx-season {
    grid-template-columns: minmax(0, 7fr) minmax(0, 4fr);
    gap: var(--gutter);
    align-items: center;
  }

  .page-features .fx-season__media {
    order: 2;
  }
}
</final>