.page-home {
  display: block;
}

.page-home section[id] {
  scroll-margin-top: calc(var(--space-8) + var(--space-4));
}

/* ---------- 首屏 ---------- */

.page-home .hero-sands {
  position: relative;
  padding-block: calc(var(--space-8) + var(--space-6)) var(--section-y);
  overflow: hidden;
  background: var(--color-surface);
}

.page-home .hero-sands::before {
  content: "";
  position: absolute;
  inset: -25% -15% auto -15%;
  height: 72%;
  background:
    radial-gradient(58% 68% at 18% 34%, color-mix(in srgb, var(--color-primary) 22%, transparent) 0%, transparent 72%),
    radial-gradient(52% 62% at 84% 8%, color-mix(in srgb, var(--color-accent) 14%, transparent) 0%, transparent 70%);
  pointer-events: none;
  z-index: 0;
}

.page-home .hero-sands > * {
  position: relative;
  z-index: 1;
}

.page-home .hero-copy {
  position: relative;
  padding-left: var(--space-2);
}

.page-home .hero-copy::before {
  content: "";
  position: absolute;
  left: 0;
  top: var(--space-1);
  bottom: var(--space-2);
  width: 2px;
  border-radius: var(--radius-pill);
  background: linear-gradient(180deg, var(--color-primary), color-mix(in srgb, var(--color-accent) 60%, transparent) 55%, transparent);
  box-shadow: 0 0 22px color-mix(in srgb, var(--color-primary) 55%, transparent);
}

.page-home .eyebrow {
  display: block;
  margin: 0 0 var(--space-2);
  font-family: var(--font-mono);
  font-size: var(--text-sm);
  letter-spacing: 0.08em;
  color: var(--color-ink-muted);
}

.page-home .display-title {
  margin: 0 0 var(--space-3);
  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);
  text-shadow: 0 0 48px color-mix(in srgb, var(--color-primary) 42%, transparent);
}

.page-home .hero-lede {
  max-width: var(--measure);
  margin: 0;
  font-size: var(--text-lg);
  line-height: 1.6;
  color: var(--color-ink-soft);
}

.page-home .hero-body {
  margin-top: var(--space-6);
}

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

.page-home .figure-frame {
  position: relative;
  display: block;
  overflow: hidden;
  border-radius: var(--radius-lg);
  background: var(--color-surface-alt);
  border: var(--border-thin) solid var(--color-line);
}

.page-home .figure-frame[data-ratio="16/9"] {
  aspect-ratio: 16 / 9;
}

.page-home .figure-frame[data-ratio="3/4"] {
  aspect-ratio: 3 / 4;
}

.page-home .figure-frame[data-ratio="3/2"] {
  aspect-ratio: 3 / 2;
}

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

.page-home .hero-figure .figure-frame {
  box-shadow: var(--shadow-1);
}

.page-home .figure-caption {
  margin-top: var(--space-2);
  font-family: var(--font-mono);
  font-size: var(--text-sm);
  line-height: 1.6;
  color: var(--color-ink-muted);
}

.page-home .hero-metrics {
  margin-top: var(--space-8);
}

.page-home .metric-track {
  list-style: none;
  margin: 0;
  padding: 0;
  display: grid;
  grid-template-columns: 1fr;
  gap: var(--space-4);
}

.page-home .metric-item {
  position: relative;
  padding-left: var(--space-3);
}

.page-home .metric-item::before {
  content: "";
  position: absolute;
  left: 0;
  top: 0;
  bottom: 0;
  width: 1px;
  background: linear-gradient(180deg, var(--color-primary), transparent);
  box-shadow: 0 0 16px color-mix(in srgb, var(--color-primary) 70%, transparent);
}

.page-home .metric-value {
  display: block;
  font-family: var(--font-heading);
  font-size: var(--text-figure);
  font-weight: var(--weight-heading);
  line-height: 1;
  color: var(--color-ink);
}

.page-home .metric-label {
  display: block;
  margin-top: var(--space-2);
  font-family: var(--font-mono);
  font-size: var(--text-sm);
  line-height: 1.6;
  color: var(--color-ink-muted);
}

/* ---------- 本页导览 ---------- */

.page-home .toc.sector-nav {
  position: static;
  display: block;
  margin: 0;
  padding: var(--space-3) 0;
  background: var(--color-surface);
  border: 0;
  border-top: var(--border-thin) dashed var(--color-line);
  border-bottom: var(--border-thin) dashed var(--color-line);
}

.page-home .toc-title {
  margin: 0 0 var(--space-2);
  font-family: var(--font-mono);
  font-size: var(--text-sm);
  color: var(--color-ink-muted);
}

.page-home .sector-list {
  list-style: none;
  margin: 0;
  padding: 0;
  display: flex;
  gap: var(--space-1);
  overflow-x: auto;
  scrollbar-width: none;
  -webkit-overflow-scrolling: touch;
}

.page-home .sector-list::-webkit-scrollbar {
  display: none;
}

.page-home .sector-list li {
  flex: 0 0 auto;
}

.page-home .toc-link {
  display: inline-block;
  white-space: nowrap;
  padding: var(--space-1) var(--space-2);
  border-radius: var(--radius-pill);
  border: var(--border-thin) solid var(--color-line);
  font-family: var(--font-mono);
  font-size: var(--text-sm);
  color: var(--color-ink-soft);
  text-decoration: none;
  transition: color 0.2s ease, border-color 0.2s ease, box-shadow 0.2s ease;
}

.page-home .toc-link:hover,
.page-home .toc-link:focus-visible,
.page-home .toc-link.is-active {
  color: var(--color-ink);
  border-color: color-mix(in srgb, var(--color-primary) 62%, transparent);
  box-shadow: var(--shadow-1);
}

/* ---------- 沙粒轨迹 ---------- */

.page-home .sand-trail {
  color: color-mix(in srgb, var(--color-accent) 55%, transparent);
  padding: 0 var(--gutter);
  max-width: var(--container);
  margin: 0 auto;
}

.page-home .sand-trail svg {
  display: block;
  width: 100%;
  height: 44px;
}

/* ---------- 通用区块 ---------- */

.page-home .section-title {
  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: var(--tracking-heading);
  color: var(--color-ink);
}

.page-home .lede {
  max-width: var(--measure);
  margin: 0 0 var(--space-6);
  font-size: var(--text-base);
  line-height: var(--leading-body);
  color: var(--color-ink-soft);
}

.page-home .link-row {
  display: flex;
  flex-wrap: wrap;
  gap: var(--space-2);
  margin-top: var(--space-4);
}

/* ---------- 移动端焕新 ---------- */

.page-home .mobile-grid {
  display: grid;
  grid-template-columns: 1fr;
  gap: var(--space-6);
}

.page-home .mobile-copy p {
  max-width: var(--measure);
  margin: 0 0 var(--space-3);
  color: var(--color-ink-soft);
  font-size: var(--text-base);
  line-height: var(--leading-body);
}

.page-home .mobile-points {
  list-style: none;
  margin: var(--space-4) 0;
  padding: 0;
  display: grid;
  gap: var(--space-2);
}

.page-home .mobile-points li {
  display: grid;
  gap: var(--space-1);
  padding: var(--space-3) var(--space-3) var(--space-3) var(--space-4);
  border-left: 1px solid var(--color-line);
  border-radius: 0 var(--radius-md) var(--radius-md) 0;
  background: var(--color-surface-alt);
}

.page-home .point-key {
  font-family: var(--font-mono);
  font-size: var(--text-sm);
  color: var(--color-accent);
  letter-spacing: 0.06em;
}

.page-home .point-text {
  font-size: var(--text-base);
  line-height: var(--leading-body);
  color: var(--color-ink);
}

.page-home .mobile-note {
  padding: var(--space-3);
  border-radius: var(--radius-md);
  background: var(--color-highlight);
  color: var(--color-ink);
  font-size: var(--text-base);
  line-height: var(--leading-body);
}

.page-home .mobile-figure .figure-frame {
  border-color: color-mix(in srgb, var(--color-accent) 34%, var(--color-line));
  box-shadow: var(--shadow-1);
}

/* ---------- 更新记录 ---------- */

.page-home .log-section {
  background: linear-gradient(180deg, var(--color-surface) 0%, color-mix(in srgb, var(--color-surface-alt) 60%, var(--color-surface)) 50%, var(--color-surface) 100%);
}

.page-home .log-figure {
  margin-bottom: var(--space-6);
}

.page-home .log-board {
  display: block;
}

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

.page-home .log-chips {
  display: flex;
  flex-wrap: wrap;
  gap: var(--space-1);
  margin-bottom: var(--space-4);
}

.page-home .chip {
  display: inline-block;
  padding: var(--space-1) var(--space-2);
  border-radius: var(--radius-pill);
  border: var(--border-thin) solid var(--color-line);
  font-family: var(--font-mono);
  font-size: var(--text-sm);
  color: var(--color-ink-soft);
  cursor: pointer;
  transition: color 0.2s ease, border-color 0.2s ease, background-color 0.2s ease;
}

.page-home .chip:hover {
  color: var(--color-ink);
  border-color: var(--color-ink-muted);
}

.page-home #flt-all:checked ~ .log-chips label[for="flt-all"],
.page-home #flt-benefit:checked ~ .log-chips label[for="flt-benefit"],
.page-home #flt-nav:checked ~ .log-chips label[for="flt-nav"],
.page-home #flt-content:checked ~ .log-chips label[for="flt-content"] {
  color: var(--color-primary-ink);
  background: var(--color-primary);
  border-color: var(--color-primary);
}

.page-home #flt-all:focus-visible ~ .log-chips label[for="flt-all"],
.page-home #flt-benefit:focus-visible ~ .log-chips label[for="flt-benefit"],
.page-home #flt-nav:focus-visible ~ .log-chips label[for="flt-nav"],
.page-home #flt-content:focus-visible ~ .log-chips label[for="flt-content"] {
  outline: 2px solid var(--color-focus);
  outline-offset: 2px;
}

.page-home .log-track {
  --log-gutter: var(--space-4);
  --log-dot: 10px;
  list-style: none;
  margin: 0;
  padding: 0 0 0 var(--log-gutter);
  position: relative;
  display: grid;
  gap: var(--space-3);
}

.page-home .log-track::before {
  content: "";
  position: absolute;
  left: calc(var(--log-gutter) / 2 - 1px);
  top: var(--space-2);
  bottom: var(--space-2);
  width: 2px;
  border-radius: var(--radius-pill);
  background: linear-gradient(180deg, color-mix(in srgb, var(--color-accent) 70%, transparent), color-mix(in srgb, var(--color-primary) 45%, transparent) 60%, transparent);
}

.page-home .log-item {
  position: relative;
  padding: var(--space-3);
  border-radius: var(--radius-md);
  border: var(--border-thin) solid var(--color-line);
  background: var(--color-surface-alt);
}

.page-home .log-item::before {
  content: "";
  position: absolute;
  left: calc(-1 * var(--log-gutter) / 2 - var(--log-dot) / 2);
  top: calc(var(--space-3) + 2px);
  width: var(--log-dot);
  height: var(--log-dot);
  border-radius: 50%;
  background: var(--color-surface);
  border: 1px solid var(--color-accent);
  box-shadow: 0 0 12px color-mix(in srgb, var(--color-accent) 65%, transparent);
}

.page-home #flt-benefit:checked ~ .log-track .log-item:not(.is-benefit) {
  display: none;
}

.page-home #flt-nav:checked ~ .log-track .log-item:not(.is-nav) {
  display: none;
}

.page-home #flt-content:checked ~ .log-track .log-item:not(.is-content) {
  display: none;
}

.page-home .log-when {
  margin: 0 0 var(--space-1);
  font-family: var(--font-mono);
  font-size: var(--text-sm);
  color: var(--color-accent);
  letter-spacing: 0.06em;
}

.page-home .log-title {
  margin: 0 0 var(--space-1);
  font-family: var(--font-heading);
  font-size: var(--text-lg);
  font-weight: var(--weight-heading);
  line-height: var(--leading-heading);
  color: var(--color-ink);
}

.page-home .log-desc {
  margin: 0;
  font-size: var(--text-base);
  line-height: var(--leading-body);
  color: var(--color-ink-soft);
}

/* ---------- 常用人群折叠 ---------- */

.page-home .person-grid {
  display: grid;
  grid-template-columns: 1fr;
  gap: var(--space-2);
}

.page-home .fold {
  border: var(--border-thin) solid var(--color-line);
  border-radius: var(--radius-lg);
  background: var(--color-surface-alt);
  overflow: hidden;
}

.page-home .fold-summary {
  display: flex;
  align-items: center;
  gap: var(--space-2);
  padding: var(--space-3);
  cursor: pointer;
  list-style: none;
}

.page-home .fold-summary::-webkit-details-marker {
  display: none;
}

.page-home .fold-index {
  font-family: var(--font-mono);
  font-size: var(--text-sm);
  color: var(--color-primary);
  letter-spacing: 0.06em;
}

.page-home .fold-title {
  flex: 1 1 auto;
  font-family: var(--font-heading);
  font-size: var(--text-lg);
  font-weight: var(--weight-heading);
  line-height: var(--leading-heading);
  color: var(--color-ink);
}

.page-home .fold-hint {
  font-family: var(--font-mono);
  font-size: var(--text-sm);
  color: var(--color-ink-muted);
}

.page-home .fold[open] .fold-hint {
  color: var(--color-accent);
}

.page-home .fold[open] {
  border-color: color-mix(in srgb, var(--color-primary) 40%, var(--color-line));
  box-shadow: var(--shadow-1);
}

.page-home .fold-body {
  padding: 0 var(--space-3) var(--space-3);
  border-top: var(--border-thin) dashed var(--color-line);
}

.page-home .fold-body p {
  margin: var(--space-2) 0 0;
  font-size: var(--text-base);
  line-height: var(--leading-body);
  color: var(--color-ink-soft);
}

.page-home .fold-body a {
  color: var(--color-accent);
  text-decoration: none;
  border-bottom: 1px dashed color-mix(in srgb, var(--color-accent) 55%, transparent);
}

.page-home .fold-body a:hover {
  color: var(--color-ink);
}

/* ---------- 三条路 ---------- */

.page-home .path-tree {
  list-style: none;
  margin: 0;
  padding: 0;
  display: grid;
  grid-template-columns: 1fr;
  gap: var(--space-3);
}

.page-home .path-node {
  position: relative;
  padding: var(--space-4) var(--space-4) var(--space-4) var(--space-4);
  border: var(--border-thin) solid var(--color-line);
  border-left: 2px solid color-mix(in srgb, var(--color-primary) 70%, transparent);
  border-radius: var(--radius-lg);
  background: var(--color-surface-alt);
  box-shadow: 0 0 0 1px color-mix(in srgb, var(--color-primary) 10%, transparent);
}

.page-home .path-step {
  margin: 0 0 var(--space-2);
  font-family: var(--font-mono);
  font-size: var(--text-sm);
  color: var(--color-ink-muted);
  letter-spacing: 0.06em;
}

.page-home .path-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);
}

.page-home .path-title a {
  color: var(--color-ink);
  text-decoration: none;
  border-bottom: 1px solid color-mix(in srgb, var(--color-primary) 60%, transparent);
  padding-bottom: 2px;
}

.page-home .path-title a:hover {
  color: var(--color-primary);
}

.page-home .path-desc {
  margin: 0 0 var(--space-2);
  font-size: var(--text-base);
  line-height: var(--leading-body);
  color: var(--color-ink-soft);
}

.page-home .path-note {
  margin: 0;
  font-family: var(--font-mono);
  font-size: var(--text-sm);
  line-height: 1.6;
  color: var(--color-ink-muted);
}

/* ---------- 联系入口（反色） ---------- */

.page-home .reach-panel {
  display: grid;
  grid-template-columns: 1fr;
  gap: var(--space-6);
  padding: var(--space-4);
  border-radius: var(--radius-lg);
  background: var(--color-contrast-surface);
  color: var(--color-contrast-ink);
}

.page-home .reach-panel .eyebrow {
  color: var(--color-contrast-accent);
}

.page-home .reach-title {
  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);
  color: var(--color-contrast-ink);
}

.page-home .reach-lede {
  margin: 0 0 var(--space-4);
  font-size: var(--text-base);
  line-height: var(--leading-body);
  color: var(--color-contrast-ink);
}

.page-home .reach-list {
  list-style: none;
  margin: 0 0 var(--space-4);
  padding: 0;
  display: grid;
  gap: var(--space-2);
}

.page-home .reach-list li {
  display: grid;
  gap: var(--space-1);
  padding-bottom: var(--space-2);
  border-bottom: 1px dashed var(--color-contrast-line);
  font-size: var(--text-base);
  line-height: var(--leading-body);
}

.page-home .reach-key {
  font-family: var(--font-mono);
  font-size: var(--text-sm);
  letter-spacing: 0.06em;
  color: var(--color-contrast-accent);
}

.page-home .reach-panel .contact-link {
  color: var(--color-contrast-ink);
  font-family: var(--font-mono);
  font-size: var(--text-base);
  text-decoration: none;
  border-bottom: 1px solid var(--color-contrast-accent);
  word-break: break-all;
}

.page-home .reach-panel .contact-link:hover {
  color: var(--color-contrast-accent);
}

.page-home .reach-panel .figure-caption {
  color: color-mix(in srgb, var(--color-contrast-ink) 70%, transparent);
}

.page-home .reach-panel .figure-frame {
  border-color: var(--color-contrast-line);
  background: color-mix(in srgb, var(--color-contrast-ink) 8%, var(--color-contrast-surface));
}

.page-home .reach-foot {
  margin: var(--space-4) 0 0;
  font-family: var(--font-mono);
  font-size: var(--text-sm);
  line-height: 1.7;
  color: var(--color-ink-muted);
}

/* ---------- 返回顶部 ---------- */

.page-home .to-top {
  position: fixed;
  right: var(--space-3);
  bottom: var(--space-3);
  z-index: 40;
  padding: var(--space-1) var(--space-2);
  border-radius: var(--radius-pill);
  border: var(--border-thin) solid color-mix(in srgb, var(--color-primary) 60%, transparent);
  background: var(--color-surface-deep);
  color: var(--color-ink);
  font-family: var(--font-mono);
  font-size: var(--text-sm);
  opacity: 0;
  visibility: hidden;
  transform: translateY(8px);
  transition: opacity 0.25s ease, transform 0.25s ease, visibility 0.25s ease;
  cursor: pointer;
}

.page-home .to-top.is-visible {
  opacity: 1;
  visibility: visible;
  transform: translateY(0);
  box-shadow: var(--shadow-2);
}

.page-home .to-top:focus-visible {
  outline: 2px solid var(--color-focus);
  outline-offset: 3px;
}

/* ---------- 平板起 ---------- */

@media (min-width: 768px) {
  .page-home .metric-track {
    grid-template-columns: repeat(4, minmax(0, 1fr));
    gap: var(--space-3);
  }

  .page-home .metric-value {
    font-size: var(--text-2xl);
  }

  .page-home .person-grid {
    grid-template-columns: repeat(2, minmax(0, 1fr));
    gap: var(--space-3);
  }

  .page-home .log-track {
    --log-gutter: var(--space-6);
  }

  .page-home .section-title {
    font-size: var(--text-2xl);
  }
}

/* ---------- 桌面 ---------- */

@media (min-width: 1024px) {
  .page-home .hero-sands {
    padding-block: calc(var(--space-8) * 2) var(--section-y-lg);
  }

  .page-home .hero-copy {
    padding-left: var(--space-4);
  }

  .page-home .hero-lede {
    font-size: var(--text-lg);
  }

  .page-home .hero-body {
    margin-top: var(--space-8);
  }

  .page-home .hero-metrics {
    margin-top: var(--space-8);
  }

  .page-home .metric-value {
    font-size: var(--text-figure);
  }

  .page-home .mobile-grid {
    grid-template-columns: minmax(0, 1.05fr) minmax(0, 0.8fr);
    gap: var(--space-8);
    align-items: start;
  }

  .page-home .mobile-figure {
    position: sticky;
    top: calc(var(--space-8) + var(--space-3));
  }

  .page-home .path-tree {
    grid-template-columns: repeat(12, minmax(0, 1fr));
    gap: var(--space-4);
  }

  .page-home .path-node:nth-child(1) {
    grid-column: 1 / 9;
  }

  .page-home .path-node:nth-child(2) {
    grid-column: 4 / 12;
  }

  .page-home .path-node:nth-child(3) {
    grid-column: 7 / 13;
  }

  .page-home .reach-panel {
    grid-template-columns: minmax(0, 1.1fr) minmax(0, 0.9fr);
    gap: var(--space-8);
    align-items: center;
    padding: var(--space-6);
  }

  .page-home .to-top {
    right: var(--space-4);
    bottom: var(--space-4);
  }
}