.page-home {
  --home-warm-tint: #FBEDE0;
  --home-line-strong: rgba(18, 58, 76, 0.28);
  --home-lake-soft: rgba(30, 111, 140, 0.1);
  --home-lake-line: rgba(30, 111, 140, 0.24);
  --home-shadow: 0 14px 32px -24px rgba(18, 58, 76, 0.75);
  overflow-x: clip;
  display: block;
}

.page-home a {
  color: var(--lake);
}

.page-home a:focus-visible {
  outline: 2px solid var(--apricot);
  outline-offset: 2px;
}

.page-home [data-chapter] {
  scroll-margin-top: calc(var(--bar-h) + 18px);
}

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

/* ---------- 01 首屏 ---------- */

.page-home .hero-home {
  position: relative;
  overflow: hidden;
  padding: clamp(30px, 5.4vw, 66px) 0 clamp(38px, 6vw, 78px);
  background:
    linear-gradient(158deg, var(--paper) 0%, var(--mist) 56%, #DCE5E9 100%);
  border-bottom: 1px solid var(--line-soft);
}

.page-home .hero-home::before {
  content: "";
  position: absolute;
  top: -22%;
  right: -14%;
  width: min(760px, 76vw);
  aspect-ratio: 1 / 1;
  background: repeating-radial-gradient(circle at 62% 38%, rgba(30, 111, 140, 0.1) 0 1px, transparent 1px 28px);
  pointer-events: none;
}

.page-home .hero-home::after {
  content: "";
  position: absolute;
  left: 0;
  bottom: 0;
  width: 38%;
  height: 6px;
  background: linear-gradient(90deg, var(--apricot), rgba(240, 138, 60, 0));
}

.page-home .hero-home-inner {
  position: relative;
  z-index: 1;
  display: grid;
  grid-template-columns: 1fr;
  gap: clamp(30px, 4.4vw, 48px);
  align-items: start;
}

.page-home .hero-kicker {
  margin: 0;
  font-size: 13px;
  letter-spacing: 0.08em;
  color: var(--rock);
}

.page-home .hero-kicker .mono {
  color: var(--apricot-deep);
}

.page-home .hero-copy h1 {
  margin: 14px 0 0;
  font-family: var(--font-display);
  font-weight: 700;
  font-size: clamp(30px, 4.6vw, 52px);
  line-height: 1.14;
  letter-spacing: -0.012em;
  color: var(--lake-deep);
}

.page-home .hero-copy h1::after {
  content: "";
  display: block;
  width: 76px;
  height: 5px;
  margin-top: 18px;
  background: linear-gradient(90deg, var(--apricot) 0%, var(--apricot-deep) 62%, rgba(196, 96, 26, 0) 100%);
}

.page-home .hero-lede {
  margin: 20px 0 0;
  max-width: 33em;
  font-size: 16px;
  line-height: 1.8;
  color: var(--ink);
}

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

.page-home .hero-metrics {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(128px, 1fr));
  gap: 16px 20px;
  margin: 28px 0 0;
  padding: 20px 0 0;
  list-style: none;
  border-top: 1px dashed var(--home-line-strong);
}

.page-home .hero-metrics li {
  display: flex;
  flex-direction: column;
  gap: 5px;
}

.page-home .metric-num {
  font-family: var(--font-mono);
  font-size: 20px;
  letter-spacing: 0.01em;
  color: var(--apricot-deep);
}

.page-home .metric-label {
  font-size: 13px;
  line-height: 1.5;
  color: var(--rock);
}

.page-home .hero-visual {
  position: relative;
  display: grid;
  gap: 22px;
}

.page-home .hero-figure {
  border: 1px solid var(--line-ink);
  background: var(--paper);
  padding: 10px;
  box-shadow: var(--shadow-card);
}

.page-home .hero-tree {
  position: relative;
  background: var(--paper);
  border: 1px solid var(--home-line-strong);
  border-radius: var(--radius);
  box-shadow: var(--shadow-lift);
  padding: 28px 20px 18px;
  transform: rotate(-0.7deg);
}

.page-home .hero-tree > .tag {
  position: absolute;
  top: -13px;
  left: 20px;
  z-index: 2;
  transform: rotate(-2deg);
}

.page-home .tree-lead {
  margin: 6px 0 12px;
  font-size: 14px;
  line-height: 1.6;
  color: var(--rock);
}

.page-home .dir-preview {
  list-style: none;
  margin: 0;
  padding: 0;
}

.page-home .dir-preview > li {
  border-bottom: 1px dotted var(--line-soft);
}

.page-home .dir-preview > li:last-child {
  border-bottom: 0;
}

.page-home .dir-preview summary {
  display: flex;
  align-items: baseline;
  justify-content: space-between;
  gap: 12px;
  padding: 10px 2px;
  cursor: pointer;
  list-style: none;
}

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

.page-home .dir-preview summary::marker {
  content: "";
}

.page-home .dir-name {
  font-size: 15px;
  color: var(--ink);
}

.page-home .dir-preview details[open] > summary .dir-name {
  color: var(--lake);
  font-weight: 600;
}

.page-home .dir-count {
  font-size: 12px;
  color: var(--rock);
  white-space: nowrap;
}

.page-home .dir-sub {
  list-style: none;
  display: flex;
  flex-wrap: wrap;
  gap: 7px;
  margin: 0 0 12px;
  padding: 0 0 0 12px;
  border-left: 2px solid var(--home-lake-line);
}

.page-home .dir-sub li {
  font-size: 12.5px;
  line-height: 1.6;
  color: var(--lake);
  background: var(--home-lake-soft);
  border-radius: 2px;
  padding: 3px 9px;
}

.page-home .tree-foot {
  margin: 16px 0 0;
  padding-top: 12px;
  border-top: 1px solid var(--line-soft);
  font-size: 13.5px;
  line-height: 1.7;
  color: var(--rock);
}

/* ---------- 通用区块与标题 ---------- */

.page-home .home-section {
  padding: clamp(42px, 6.2vw, 82px) 0;
  border-bottom: 1px solid var(--line-soft);
}

.page-home .home-section--mist {
  background: linear-gradient(180deg, var(--mist) 0%, #E3E8EB 100%);
}

.page-home .home-section--warm {
  background: linear-gradient(180deg, var(--paper) 0%, var(--home-warm-tint) 100%);
}

.page-home .home-section--dark {
  background: var(--lake-deep);
  color: #E7EEF2;
  border-bottom: 0;
}

.page-home .home-head {
  display: grid;
  grid-template-columns: auto minmax(0, 1fr);
  gap: 4px 16px;
  align-items: baseline;
  margin-bottom: clamp(22px, 3.2vw, 38px);
}

.page-home .home-head .chapter-num {
  font-family: var(--font-mono);
  font-size: clamp(26px, 3.4vw, 38px);
  line-height: 0.92;
  letter-spacing: -0.02em;
}

.page-home .home-h2 {
  margin: 0;
  font-family: var(--font-display);
  font-weight: 700;
  font-size: clamp(23px, 3.1vw, 33px);
  line-height: 1.26;
  color: var(--lake-deep);
}

.page-home .home-note {
  grid-column: 2;
  margin: 10px 0 0;
  max-width: 52em;
  font-size: 15px;
  line-height: 1.78;
  color: var(--rock);
}

.page-home .home-section--dark .home-h2 {
  color: #FBF9F6;
}

.page-home .home-section--dark .home-note {
  color: rgba(233, 236, 238, 0.72);
}

.page-home .home-section--dark a {
  color: #F3C48A;
}

.page-home .contour-rule {
  height: 12px;
  background-image: repeating-linear-gradient(90deg, var(--home-lake-line) 0 1px, transparent 1px 9px);
  background-color: var(--paper);
  opacity: 0.85;
}

/* ---------- 02 路径对比 ---------- */

.page-home .path-compare {
  display: grid;
  grid-template-columns: 1fr;
  border: 1px solid var(--home-line-strong);
  border-radius: var(--radius);
  overflow: hidden;
  box-shadow: var(--home-shadow);
}

.page-home .path-panel {
  padding: clamp(20px, 3vw, 32px);
}

.page-home .path-panel--old {
  background: var(--violet);
  color: #F1EDF7;
}

.page-home .path-panel--new {
  background: var(--wine);
  color: #FBEEEB;
}

.page-home .path-label {
  margin: 0;
  font-size: 12px;
  letter-spacing: 0.06em;
  opacity: 0.86;
}

.page-home .path-title {
  margin: 8px 0 0;
  font-family: var(--font-display);
  font-size: 21px;
  font-weight: 700;
  letter-spacing: 0.01em;
}

.page-home .path-steps {
  list-style: none;
  margin: 18px 0 0;
  padding: 0;
  display: flex;
  flex-wrap: wrap;
  gap: 8px;
}

.page-home .path-steps li {
  position: relative;
  font-family: var(--font-mono);
  font-size: 12.5px;
  line-height: 1.5;
  padding: 5px 11px;
  border: 1px solid currentColor;
  border-radius: 999px;
  opacity: 0.92;
}

.page-home .path-foot {
  margin: 20px 0 0;
  font-size: 14px;
  line-height: 1.7;
  opacity: 0.85;
}

.page-home .path-figure {
  margin: clamp(20px, 3vw, 32px) 0 0;
  border: 1px solid var(--line-soft);
  background: var(--paper);
  padding: 10px;
}

.page-home .path-figure figcaption {
  margin-top: 10px;
  padding: 0 4px 4px;
  font-size: 13px;
  line-height: 1.7;
  color: var(--rock);
}

/* ---------- 03 换设备续读 ---------- */

.page-home .sync-grid {
  display: grid;
  grid-template-columns: 1fr;
  gap: clamp(22px, 3.4vw, 38px);
  align-items: start;
}

.page-home .sync-figure {
  margin: 0;
  border: 1px solid var(--line-ink);
  background: var(--paper);
  padding: 10px;
  box-shadow: var(--shadow-card);
}

.page-home .sync-figure figcaption {
  margin-top: 10px;
  padding: 0 4px 4px;
  font-size: 13px;
  line-height: 1.7;
  color: var(--rock);
}

.page-home .sync-list {
  list-style: none;
  margin: 0;
  padding: 0;
  display: grid;
  gap: 2px;
}

.page-home .sync-item {
  position: relative;
  padding: 16px 4px 16px 26px;
  border-bottom: 1px solid var(--line-soft);
}

.page-home .sync-item:last-child {
  border-bottom: 0;
}

.page-home .sync-mark {
  position: absolute;
  left: 4px;
  top: 24px;
  width: 9px;
  height: 9px;
  border-radius: 50%;
  background: var(--apricot);
  box-shadow: 0 0 0 3px rgba(240, 138, 60, 0.18);
}

.page-home .sync-item h3 {
  margin: 0;
  font-family: var(--font-body);
  font-size: 16px;
  font-weight: 600;
  line-height: 1.55;
  color: var(--lake-deep);
}

.page-home .sync-item p {
  margin: 6px 0 0;
  font-size: 14.5px;
  line-height: 1.75;
  color: var(--rock);
}

/* ---------- 04 本周更新 ---------- */

.page-home .weekly-list {
  list-style: none;
  margin: 0;
  padding: 0;
  border-top: 1px solid var(--home-line-strong);
}

.page-home .weekly-item {
  border-bottom: 1px solid var(--line-soft);
}

.page-home .weekly-item summary {
  display: grid;
  grid-template-columns: minmax(0, 1fr);
  gap: 8px;
  padding: 16px 2px;
  cursor: pointer;
  list-style: none;
}

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

.page-home .weekly-item summary::marker {
  content: "";
}

.page-home .weekly-item:hover summary .weekly-text {
  color: var(--apricot-deep);
}

.page-home .weekly-id {
  font-size: 12px;
  letter-spacing: 0.05em;
  color: var(--rock);
}

.page-home .weekly-text {
  font-size: 15.5px;
  line-height: 1.65;
  color: var(--ink);
  transition: color 0.18s var(--ease);
}

.page-home .weekly-meta {
  display: flex;
  align-items: center;
  flex-wrap: wrap;
  gap: 10px;
}

.page-home .weekly-time {
  font-size: 12px;
  color: var(--rock);
}

.page-home .weekly-detail {
  margin: 0;
  padding: 0 2px 20px;
  max-width: 68ch;
  font-size: 14.5px;
  line-height: 1.78;
  color: var(--rock);
}

.page-home .weekly-foot {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  justify-content: space-between;
  gap: 16px;
  margin-top: 26px;
}

.page-home .weekly-foot-note {
  margin: 0;
  font-size: 14px;
  line-height: 1.7;
  color: var(--rock);
}

/* ---------- 05 上手路径 ---------- */

.page-home .start-grid {
  display: grid;
  grid-template-columns: 1fr;
  gap: 18px;
}

.page-home .start-card {
  position: relative;
  display: block;
  padding: 26px 22px 24px;
  background: var(--paper);
  border: 1px solid var(--home-line-strong);
  border-radius: var(--radius);
  box-shadow: var(--home-shadow);
  text-decoration: none;
  transition: transform 0.22s var(--ease), box-shadow 0.22s var(--ease), border-color 0.22s var(--ease);
}

.page-home .start-card::after {
  content: "";
  position: absolute;
  right: 0;
  bottom: 0;
  width: 26px;
  height: 26px;
  background: linear-gradient(135deg, transparent 50%, var(--mist) 50%);
  border-left: 1px solid var(--line-soft);
  border-top: 1px solid var(--line-soft);
}

.page-home .start-card:hover {
  transform: translateY(-3px);
  border-color: var(--apricot);
  box-shadow: var(--shadow-lift);
}

.page-home .start-index {
  display: inline-block;
  font-size: 13px;
  letter-spacing: 0.08em;
  color: var(--apricot-deep);
}

.page-home .start-card h3 {
  margin: 12px 0 0;
  font-family: var(--font-display);
  font-size: 19px;
  font-weight: 700;
  line-height: 1.4;
  color: var(--lake-deep);
}

.page-home .start-card p {
  margin: 9px 0 0;
  font-size: 14.5px;
  line-height: 1.76;
  color: var(--rock);
}

.page-home .start-go {
  display: inline-block;
  margin-top: 18px;
  font-size: 13.5px;
  letter-spacing: 0.04em;
  color: var(--lake);
  border-bottom: 1px solid var(--home-lake-line);
  padding-bottom: 2px;
}

/* ---------- 06 整理节奏 ---------- */

.page-home .team-grid {
  display: grid;
  grid-template-columns: 1fr;
  gap: clamp(24px, 3.6vw, 42px);
  align-items: start;
}

.page-home .team-flow {
  display: grid;
  gap: 2px;
}

.page-home .team-step {
  padding: 18px 4px;
  border-bottom: 1px solid rgba(233, 236, 238, 0.16);
}

.page-home .team-step:last-child {
  border-bottom: 0;
}

.page-home .team-step-id {
  font-size: 12px;
  letter-spacing: 0.06em;
  color: var(--amber);
}

.page-home .team-step h3 {
  margin: 8px 0 0;
  font-family: var(--font-body);
  font-size: 16.5px;
  font-weight: 600;
  line-height: 1.5;
  color: #FBF9F6;
}

.page-home .team-step p {
  margin: 7px 0 0;
  font-size: 14.5px;
  line-height: 1.75;
  color: rgba(233, 236, 238, 0.72);
}

.page-home .team-figure {
  margin: 0;
  border: 1px solid var(--line-paper);
  background: rgba(251, 249, 246, 0.06);
  padding: 10px;
}

.page-home .team-figure figcaption {
  margin-top: 10px;
  padding: 0 4px 4px;
  font-size: 13px;
  line-height: 1.7;
  color: rgba(233, 236, 238, 0.62);
}

.page-home .team-foot {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  justify-content: space-between;
  gap: 18px;
  margin-top: clamp(26px, 3.4vw, 40px);
  padding-top: 24px;
  border-top: 1px solid rgba(233, 236, 238, 0.18);
}

.page-home .team-foot p {
  margin: 0;
  max-width: 46em;
  font-size: 14.5px;
  line-height: 1.78;
  color: rgba(233, 236, 238, 0.78);
}

/* ---------- 右侧章节刻度 ---------- */

.page-home .home-rail {
  display: none;
}

.page-home .rail-list {
  list-style: none;
  margin: 0;
  padding: 0;
  display: grid;
  gap: 2px;
  border-left: 2px solid var(--line-soft);
}

.page-home .rail-list a {
  display: block;
  margin-left: -2px;
  padding: 7px 0 7px 12px;
  font-family: var(--font-mono);
  font-size: 12px;
  letter-spacing: 0.04em;
  line-height: 1.5;
  color: var(--rock);
  text-decoration: none;
  border-left: 2px solid transparent;
  transition: color 0.18s var(--ease), border-color 0.18s var(--ease);
}

.page-home .rail-list a:hover {
  color: var(--lake);
}

.page-home .rail-list a.is-current {
  color: var(--apricot-deep);
  border-left-color: var(--apricot);
}

/* ---------- 响应式 ---------- */

@media (min-width: 760px) {
  .page-home .path-compare {
    grid-template-columns: 1fr 1fr;
  }

  .page-home .start-grid {
    grid-template-columns: repeat(3, minmax(0, 1fr));
    gap: 20px;
  }

  .page-home .weekly-item summary {
    grid-template-columns: 86px minmax(0, 1fr) auto;
    gap: 0 18px;
    align-items: baseline;
  }

  .page-home .weekly-detail {
    padding-left: 104px;
  }
}

@media (min-width: 900px) {
  .page-home .hero-home-inner {
    grid-template-columns: 5fr 7fr;
    gap: clamp(28px, 3.6vw, 52px);
  }

  .page-home .hero-visual {
    margin-top: 6px;
  }

  .page-home .hero-tree {
    margin-left: 26px;
  }

  .page-home .hero-tree::before {
    content: "";
    position: absolute;
    inset: 10px -12px -12px 12px;
    z-index: -1;
    background: var(--mist);
    border: 1px solid var(--line-soft);
    border-radius: var(--radius);
  }

  .page-home .sync-grid {
    grid-template-columns: 6fr 5fr;
    gap: clamp(28px, 3.8vw, 48px);
  }

  .page-home .sync-list {
    margin-top: 4px;
  }

  .page-home .team-grid {
    grid-template-columns: minmax(0, 7fr) minmax(0, 5fr);
  }
}

@media (min-width: 1500px) {
  .page-home .home-rail {
    display: block;
    position: fixed;
    right: 26px;
    top: 50%;
    transform: translateY(-50%);
    z-index: 15;
    width: 138px;
  }
}

@media (max-width: 480px) {
  .page-home .hero-metrics {
    grid-template-columns: repeat(2, minmax(0, 1fr));
  }

  .page-home .hero-tree {
    padding: 26px 15px 16px;
  }

  .page-home .dir-preview summary {
    flex-direction: column;
    align-items: flex-start;
    gap: 2px;
  }

  .page-home .path-steps li {
    font-size: 12px;
  }

  .page-home .home-head {
    grid-template-columns: 1fr;
    gap: 8px;
  }

  .page-home .home-note {
    grid-column: 1;
  }
}

@media (prefers-reduced-motion: reduce) {
  .page-home .start-card,
  .page-home .weekly-text,
  .page-home .rail-list a {
    transition: none;
  }

  .page-home .start-card:hover {
    transform: none;
  }
}