.page-home {
  --home-gap: clamp(28px, 5vw, 64px);
}

.page-home .ctx-bar {
  display: flex;
  align-items: center;
  gap: 14px;
  flex-wrap: wrap;
  padding-top: 22px;
  color: var(--grey);
  font-size: 12px;
  letter-spacing: 0.06em;
}

.page-home .ctx-mark {
  color: var(--ochre);
  font-weight: 600;
}

.page-home .ctx-line {
  flex: 1 1 40px;
  min-width: 30px;
  height: 1px;
  background: var(--line-gold);
}

.page-home .ctx-note {
  color: var(--grey);
}

/* ---------- 首屏框景 ---------- */
.page-home .hero {
  padding-bottom: clamp(48px, 7vw, 96px);
}

.page-home .hero-grid {
  display: grid;
  gap: var(--home-gap);
  margin-top: clamp(26px, 4vw, 48px);
}

.page-home .hero-copy h1 {
  margin: 14px 0 0;
  font-family: var(--font-display);
  font-weight: 900;
  font-size: clamp(34px, 7vw, 62px);
  line-height: 1.1;
  letter-spacing: -0.01em;
  color: var(--ink);
}

.page-home .hero-copy .lede {
  margin: 20px 0 0;
  max-width: 34em;
  font-size: 16px;
  line-height: 1.85;
  color: var(--ink-soft);
}

.page-home .hero-actions {
  display: flex;
  flex-wrap: wrap;
  gap: 12px;
  margin-top: 26px;
}

.page-home .index-list {
  list-style: none;
  margin: 34px 0 0;
  padding: 0;
  border-top: 1px solid var(--hairline);
}

.page-home .index-list li {
  border-bottom: 1px solid var(--hairline);
}

.page-home .index-row {
  display: grid;
  grid-template-columns: 34px minmax(0, 1fr) auto;
  align-items: baseline;
  gap: 12px;
  padding: 13px 4px;
  color: var(--ink);
  text-decoration: none;
  transition: background-color 0.2s var(--ease), padding-left 0.2s var(--ease);
}

.page-home .index-row:hover,
.page-home .index-row:focus-visible {
  background: var(--stone);
  padding-left: 12px;
  outline: none;
}

.page-home .ix-no {
  font-size: 12px;
  color: var(--gold);
  letter-spacing: 0.06em;
}

.page-home .ix-label {
  font-family: var(--font-display);
  font-weight: 900;
  font-size: 17px;
}

.page-home .ix-note {
  font-size: 12px;
  color: var(--grey);
  text-align: right;
}

/* 框景视觉 */
.page-home .hero-visual {
  position: relative;
  margin: 0;
  padding: 14px;
  border: 1px solid var(--line-gold);
  background: var(--ink-green);
}

.page-home .hero-visual::before,
.page-home .hero-visual::after {
  content: "";
  position: absolute;
  width: 26px;
  height: 26px;
  border: 2px solid var(--gold);
  pointer-events: none;
}

.page-home .hero-visual::before {
  top: -2px;
  left: -2px;
  border-right: 0;
  border-bottom: 0;
}

.page-home .hero-visual::after {
  right: -2px;
  bottom: -2px;
  border-top: 0;
  border-left: 0;
}

.page-home .hv-mark {
  position: absolute;
  z-index: 3;
  top: 22px;
  left: 22px;
  padding: 5px 9px;
  background: rgba(22, 51, 43, 0.88);
  color: var(--gold);
  font-size: 11px;
  letter-spacing: 0.08em;
}

.page-home .hv-media {
  display: block;
}

.page-home .hero-visual .media-caption {
  margin: 0;
  padding: 12px 2px 2px;
  color: rgba(247, 244, 238, 0.72);
  font-size: 12px;
  line-height: 1.7;
}

/* ---------- 通用章节头 ---------- */
.page-home .sec-head {
  max-width: 46em;
}

.page-home .sec-head h2 {
  margin: 12px 0 0;
  font-family: var(--font-display);
  font-weight: 900;
  font-size: clamp(26px, 4vw, 38px);
  line-height: 1.25;
  color: var(--ink);
}

.page-home .sec-lede {
  margin: 16px 0 0;
  font-size: 16px;
  line-height: 1.85;
  color: var(--ink-soft);
}

/* ---------- 三条路径 ---------- */
.page-home .path-list {
  list-style: none;
  margin: 42px 0 0;
  padding: 0;
  border-bottom: 1px solid var(--hairline);
}

.page-home .path-item {
  display: grid;
  gap: 8px;
  padding: 26px 0;
  border-top: 1px solid var(--hairline);
}

.page-home .path-no {
  font-size: 13px;
  color: var(--ochre);
  letter-spacing: 0.08em;
}

.page-home .path-title {
  margin: 0;
  font-family: var(--font-display);
  font-weight: 900;
  font-size: 20px;
  line-height: 1.35;
  color: var(--ink);
}

.page-home .path-body p {
  margin: 0;
  font-size: 15px;
  line-height: 1.85;
  color: var(--ink-soft);
}

.page-home .path-body .path-fit {
  margin-top: 10px;
  font-size: 12px;
  letter-spacing: 0.04em;
  color: var(--grey);
  border-left: 2px solid var(--gold);
  padding-left: 10px;
}

.page-home .wide-plate {
  margin: clamp(38px, 6vw, 68px) 0 0;
}

.page-home .wide-plate .media-caption {
  margin-top: 12px;
  color: var(--grey);
  font-size: 13px;
  line-height: 1.7;
}

/* ---------- 重点场次 ---------- */
.page-home .sessions {
  background: var(--stone);
}

.page-home .case-filter {
  position: relative;
  margin-top: 34px;
}

.page-home .case-radio {
  position: absolute;
  width: 1px;
  height: 1px;
  opacity: 0;
  pointer-events: none;
}

.page-home .case-chips {
  display: flex;
  flex-wrap: wrap;
  gap: 8px;
}

.page-home .case-chip {
  display: inline-block;
  padding: 8px 16px;
  border: 1px solid var(--hairline);
  background: var(--snow);
  color: var(--ink-soft);
  font-family: var(--font-mono);
  font-size: 13px;
  letter-spacing: 0.04em;
  cursor: pointer;
  transition: background-color 0.2s var(--ease), color 0.2s var(--ease), border-color 0.2s var(--ease);
}

.page-home .case-chip:hover {
  border-color: var(--ochre);
  color: var(--ochre);
}

.page-home #cf-all:checked ~ .case-chips .case-chip[for="cf-all"],
.page-home #cf-ball:checked ~ .case-chips .case-chip[for="cf-ball"],
.page-home #cf-track:checked ~ .case-chips .case-chip[for="cf-track"],
.page-home #cf-combat:checked ~ .case-chips .case-chip[for="cf-combat"] {
  background: var(--ochre);
  border-color: var(--ochre);
  color: var(--white);
}

.page-home .case-stack {
  display: grid;
  gap: 20px;
  margin-top: 26px;
}

.page-home .case-card {
  display: flex;
  flex-direction: column;
  gap: 10px;
  padding: 20px;
  background: var(--white);
  border: 1px solid var(--hairline);
  transition: transform 0.2s var(--ease), border-color 0.2s var(--ease), box-shadow 0.2s var(--ease);
}

.page-home .case-figure {
  margin: -20px -20px 4px;
  aspect-ratio: 4 / 3;
  overflow: hidden;
  background: var(--stone);
}

.page-home .case-figure img {
  display: block;
  width: 100%;
  height: 100%;
  object-fit: cover;
}

.page-home .case-top {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 10px;
  flex-wrap: wrap;
}

.page-home .case-title {
  margin: 0;
  font-family: var(--font-display);
  font-weight: 900;
  font-size: 19px;
  line-height: 1.4;
  color: var(--ink);
}

.page-home .case-summary {
  margin: 0;
  font-size: 14px;
  line-height: 1.8;
  color: var(--ink-soft);
}

.page-home .case-meta {
  margin: auto 0 0;
  padding-top: 10px;
  border-top: 1px solid var(--hairline);
  font-size: 12px;
  letter-spacing: 0.04em;
  color: var(--grey);
}

/* ---------- iOS 阅读 ---------- */
.page-home .ios-grid {
  display: grid;
  gap: clamp(30px, 5vw, 56px);
}

.page-home .ios-body h2 {
  margin: 12px 0 0;
  font-family: var(--font-display);
  font-weight: 900;
  font-size: clamp(26px, 4vw, 38px);
  line-height: 1.25;
  color: var(--ink);
}

.page-home .ios-body > p {
  margin: 16px 0 0;
  font-size: 16px;
  line-height: 1.85;
  color: var(--ink-soft);
}

.page-home .ios-switch {
  position: relative;
  margin-top: 26px;
  border: 1px solid var(--hairline);
  background: var(--snow);
}

.page-home .ios-radio {
  position: absolute;
  width: 1px;
  height: 1px;
  opacity: 0;
  pointer-events: none;
}

.page-home .ios-tabs {
  display: flex;
  border-bottom: 1px solid var(--hairline);
}

.page-home .ios-tab {
  flex: 1 1 0;
  padding: 12px 10px;
  text-align: center;
  font-family: var(--font-mono);
  font-size: 13px;
  letter-spacing: 0.04em;
  color: var(--grey);
  cursor: pointer;
  transition: background-color 0.2s var(--ease), color 0.2s var(--ease);
}

.page-home .ios-tab + .ios-tab {
  border-left: 1px solid var(--hairline);
}

.page-home #ios-a:checked ~ .ios-tabs .ios-tab[for="ios-a"],
.page-home #ios-b:checked ~ .ios-tabs .ios-tab[for="ios-b"] {
  background: var(--ink-green);
  color: var(--snow);
}

.page-home .ios-steps {
  margin: 0;
  padding: 20px 20px 20px 42px;
  display: grid;
  gap: 12px;
  font-size: 15px;
  line-height: 1.8;
  color: var(--ink-soft);
}

.page-home .ios-steps li::marker {
  font-family: var(--font-mono);
  font-size: 13px;
  color: var(--ochre);
}

.page-home .ios-steps-b {
  display: none;
}

.page-home #ios-b:checked ~ .ios-steps-a {
  display: none;
}

.page-home #ios-b:checked ~ .ios-steps-b {
  display: grid;
}

.page-home .ios-cta {
  margin-top: 26px;
}

.page-home .ios-figure {
  margin: 0;
}

.page-home .ios-figure .media {
  aspect-ratio: 1 / 1;
}

.page-home .ios-figure .media img {
  display: block;
  width: 100%;
  height: 100%;
  object-fit: cover;
}

.page-home .ios-figure .media-caption {
  margin-top: 12px;
  color: var(--grey);
  font-size: 13px;
  line-height: 1.7;
}

/* ---------- 规模概览 ---------- */
.page-home .scale {
  background: var(--ink-green);
  color: var(--snow);
}

.page-home .scale .eyebrow {
  color: var(--gold);
}

.page-home .scale .sec-head h2 {
  color: var(--snow);
}

.page-home .scale .sec-lede {
  color: rgba(247, 244, 238, 0.76);
}

.page-home .scale-stats {
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: 26px 18px;
  margin: clamp(32px, 5vw, 52px) 0 0;
  padding: 0;
}

.page-home .scale-stat {
  padding-top: 16px;
  border-top: 1px solid var(--line-gold);
}

.page-home .stat-label {
  font-size: 12px;
  letter-spacing: 0.06em;
  color: rgba(247, 244, 238, 0.62);
}

.page-home .stat-value {
  margin: 8px 0 0;
  display: flex;
  align-items: baseline;
  gap: 6px;
}

.page-home .stat-num {
  font-family: var(--font-mono);
  font-size: clamp(30px, 4vw, 44px);
  font-weight: 600;
  line-height: 1;
  color: var(--gold);
}

.page-home .stat-unit {
  font-size: 13px;
  color: rgba(247, 244, 238, 0.7);
}

.page-home .scale-notes {
  list-style: none;
  margin: clamp(36px, 5vw, 56px) 0 0;
  padding: 0;
  border-top: 1px solid var(--line-light);
}

.page-home .scale-notes li {
  display: grid;
  gap: 4px;
  padding: 14px 0;
  border-bottom: 1px solid var(--line-light);
}

.page-home .scale-note-key {
  font-size: 12px;
  letter-spacing: 0.06em;
  color: var(--gold);
}

.page-home .scale-note-val {
  font-size: 15px;
  line-height: 1.75;
  color: rgba(247, 244, 238, 0.86);
}

/* ---------- 响应式 ---------- */
@media (min-width: 760px) {
  .page-home .case-stack {
    grid-template-columns: repeat(2, minmax(0, 1fr));
    gap: 24px;
  }

  .page-home .scale-stats {
    grid-template-columns: repeat(4, minmax(0, 1fr));
    gap: 0;
  }

  .page-home .scale-stat + .scale-stat {
    border-left: 1px solid var(--line-light);
    padding-left: 22px;
  }

  .page-home .scale-notes li {
    grid-template-columns: 128px minmax(0, 1fr);
    gap: 20px;
    align-items: baseline;
  }
}

@media (min-width: 900px) {
  .page-home .hero-grid {
    grid-template-columns: minmax(0, 1fr) minmax(0, 1.3fr);
    align-items: start;
  }

  .page-home .path-item {
    grid-template-columns: 76px minmax(0, 220px) minmax(0, 1fr);
    gap: 28px;
    align-items: start;
    padding: 30px 0;
  }

  .page-home .path-no {
    padding-top: 4px;
  }

  .page-home .path-title {
    font-size: 22px;
  }

  .page-home .ios-grid {
    grid-template-columns: minmax(0, 1.2fr) minmax(0, 0.8fr);
    align-items: start;
  }
}

@media (min-width: 1080px) {
  .page-home .case-stack {
    grid-template-columns: repeat(3, minmax(0, 1fr));
    gap: 26px;
  }

  .page-home .case-card:nth-child(odd) {
    transform: rotate(-0.7deg);
  }

  .page-home .case-card:nth-child(even) {
    transform: rotate(0.6deg) translateY(8px);
  }

  .page-home .case-card:hover,
  .page-home .case-card:focus-within {
    transform: rotate(0deg) translateY(-4px);
    border-color: var(--gold);
    box-shadow: 0 12px 26px rgba(20, 17, 15, 0.09);
  }
}

@media (max-width: 480px) {
  .page-home .index-row {
    grid-template-columns: 30px minmax(0, 1fr);
    row-gap: 2px;
  }

  .page-home .ix-note {
    grid-column: 2;
    text-align: left;
  }

  .page-home .ios-steps {
    padding: 18px 16px 18px 36px;
  }
}

@media (prefers-reduced-motion: reduce) {
  .page-home .index-row,
  .page-home .case-card,
  .page-home .case-chip,
  .page-home .ios-tab {
    transition: none;
  }

  .page-home .case-card:hover,
  .page-home .case-card:focus-within {
    transform: none;
  }
}