/* =========================================================
   page-home —— 归档长卷的卷首
   所有选择器限定在 .page-home 作用域内
   ========================================================= */

.page-home .crumb {
  display: flex;
  align-items: center;
  gap: 8px;
  margin: 0 0 clamp(14px, 2vw, 22px);
  font-family: var(--font-mono);
  font-size: 12px;
  letter-spacing: 0.08em;
  color: var(--ink-500);
}

.page-home .crumb__sep {
  color: var(--laterite-200);
}

.page-home .crumb__ctx {
  color: var(--laterite-500);
}

/* ---------- 首屏：对角切割 ---------- */
.page-home .hero {
  position: relative;
  overflow: hidden;
  background: var(--sand-050);
  border-bottom: 10px solid var(--laterite-700);
  padding-block: clamp(28px, 4.5vw, 68px) clamp(26px, 4vw, 56px);
}

.page-home .hero__cut {
  position: absolute;
  z-index: 0;
  top: -16%;
  right: -10%;
  width: 66%;
  height: 132%;
  background: var(--pine-900);
  clip-path: polygon(36% 0, 100% 0, 100% 100%, 0 100%);
  pointer-events: none;
}

.page-home .hero__cut::after {
  content: "";
  position: absolute;
  inset: 0;
  background: var(--laterite-700);
  clip-path: polygon(0 68%, 100% 30%, 100% 100%, 0 100%);
}

.page-home .hero__wrap {
  position: relative;
  z-index: 1;
  display: grid;
  grid-template-columns: minmax(0, 1fr);
  gap: clamp(22px, 4vw, 44px);
  align-items: end;
}

.page-home .hero__eyebrow {
  margin: 0 0 12px;
  color: var(--laterite-500);
}

.page-home .hero__title {
  margin: 0 0 clamp(14px, 2vw, 22px);
  font-family: var(--font-display);
  font-weight: 800;
  font-size: clamp(30px, 4.6vw, 58px);
  line-height: 1.06;
  letter-spacing: -0.02em;
  color: var(--ink-900);
  max-width: 18ch;
}

.page-home .hero__lead {
  margin: 0;
  max-width: 46ch;
  font-size: clamp(15px, 1.5vw, 17px);
  line-height: 1.85;
  color: var(--ink-500);
}

.page-home .hero__cta {
  display: flex;
  flex-wrap: wrap;
  gap: 12px;
  margin-top: clamp(18px, 2.6vw, 28px);
}

.page-home .hero__figure {
  position: relative;
  margin: 0;
}

.page-home .hero__figure img {
  display: block;
  width: 100%;
  height: auto;
  aspect-ratio: 4 / 5;
  object-fit: cover;
  border: 2px solid var(--laterite-900);
  box-shadow: var(--shadow-hard);
  background: var(--sand-100);
}

@media (max-width: 899px) {
  .page-home .hero__cut {
    top: auto;
    bottom: 0;
    right: 0;
    width: 100%;
    height: 44%;
    opacity: 0.14;
  }
}

@media (min-width: 900px) {
  .page-home .hero__wrap {
    grid-template-columns: minmax(0, 7fr) minmax(0, 5fr);
    column-gap: clamp(24px, 4vw, 56px);
  }
  .page-home .hero__copy {
    padding-right: 6%;
  }
  .page-home .hero__figure {
    margin-top: clamp(0px, 3vw, 32px);
  }
}

/* ---------- 锚点数字带 ---------- */
.page-home .anchors {
  background: var(--sand-050);
  padding-block: clamp(22px, 3vw, 40px);
}

.page-home .anchor-row {
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: 1px;
  margin: 0;
  background: var(--laterite-200);
  border: var(--line-strong);
}

.page-home .anchor-row .stat {
  display: flex;
  flex-direction: column;
  gap: 6px;
  padding: clamp(14px, 2.2vw, 26px);
  background: var(--sand-050);
  border: 0;
}

.page-home .anchor-row .stat__num {
  display: block;
  font-family: var(--font-mono);
  font-variant-numeric: tabular-nums;
  font-size: clamp(28px, 4vw, 46px);
  font-weight: 700;
  line-height: 1;
  letter-spacing: -0.02em;
  color: var(--laterite-700);
}

.page-home .anchor-row .stat__label {
  display: block;
  font-size: 13px;
  letter-spacing: 0.04em;
  color: var(--ink-500);
}

@media (min-width: 760px) {
  .page-home .anchor-row {
    grid-template-columns: repeat(4, minmax(0, 1fr));
  }
}

/* ---------- 编号章节通用 ---------- */
.page-home .chapter {
  position: relative;
  padding-block: clamp(46px, 6.5vw, 104px);
}

.page-home .chapter--sand {
  background: var(--sand-050);
}

.page-home .chapter--paper {
  background: var(--sand-100);
}

.page-home .chapter--pine {
  background: var(--pine-900);
  color: var(--laterite-200);
}

.page-home .ch-head {
  display: block;
  margin-bottom: clamp(26px, 4vw, 52px);
}

.page-home .ch-num {
  display: block;
  margin-bottom: clamp(6px, 1vw, 12px);
  font-family: var(--font-mono);
  font-variant-numeric: tabular-nums;
  font-size: clamp(54px, 10vw, 132px);
  font-weight: 700;
  line-height: 0.78;
  letter-spacing: -0.04em;
  color: var(--laterite-700);
}

.page-home .ch-title {
  margin: 0 0 clamp(8px, 1.4vw, 14px);
  font-family: var(--font-serif);
  font-weight: 600;
  font-size: clamp(22px, 3vw, 38px);
  line-height: 1.25;
  letter-spacing: -0.01em;
  color: var(--ink-900);
  max-width: 22ch;
}

.page-home .ch-lead {
  margin: 0;
  max-width: 52ch;
  font-size: clamp(15px, 1.5vw, 17px);
  line-height: 1.85;
  color: var(--ink-500);
}

.page-home .chapter--pine .ch-num {
  color: var(--pine-300);
}

.page-home .chapter--pine .ch-title {
  color: var(--sand-050);
}

.page-home .chapter--pine .ch-lead {
  color: var(--laterite-200);
}

@media (min-width: 960px) {
  .page-home .ch-title,
  .page-home .ch-lead {
    margin-left: clamp(0px, 7vw, 110px);
  }
}

/* ---------- 01 四条路径 ---------- */
.page-home .path-grid {
  display: grid;
  grid-template-columns: minmax(0, 1fr);
  gap: clamp(14px, 2vw, 22px);
}

.page-home .path-card {
  display: flex;
  flex-direction: column;
  gap: 10px;
  padding: clamp(16px, 2.2vw, 26px);
  background: var(--sand-100);
  border: var(--line-strong);
  border-radius: var(--radius);
  box-shadow: var(--shadow-card);
  transition: border-color 0.18s ease, box-shadow 0.18s ease;
}

.page-home .path-card:hover,
.page-home .path-card:focus-within {
  border-color: var(--mineral-600);
  box-shadow: 6px 6px 0 var(--mineral-600);
}

.page-home .path-card__num {
  font-family: var(--font-mono);
  font-size: 12px;
  letter-spacing: 0.1em;
  color: var(--laterite-500);
}

.page-home .path-card__title {
  margin: 0;
  font-family: var(--font-serif);
  font-size: clamp(19px, 2vw, 23px);
  font-weight: 600;
  line-height: 1.3;
  color: var(--ink-900);
}

.page-home .path-card__desc {
  flex: 1 1 auto;
  margin: 0;
  font-size: 15px;
  line-height: 1.75;
  color: var(--ink-500);
}

.page-home .path-card__link {
  align-self: flex-start;
  padding-bottom: 2px;
  font-family: var(--font-mono);
  font-size: 13px;
  letter-spacing: 0.04em;
  color: var(--laterite-700);
  text-decoration: none;
  border-bottom: 2px solid var(--laterite-500);
}

.page-home .path-card__link:hover,
.page-home .path-card__link:focus-visible {
  color: var(--mineral-600);
  border-bottom-color: var(--mineral-600);
}

.page-home .path-note {
  margin: clamp(20px, 3vw, 32px) 0 0;
  padding-left: 14px;
  border-left: 3px solid var(--laterite-200);
  font-size: 14px;
  line-height: 1.8;
  color: var(--ink-500);
}

.page-home .path-note a {
  color: var(--laterite-700);
  font-weight: 600;
  text-decoration: none;
  border-bottom: 2px solid var(--laterite-500);
}

@media (min-width: 640px) {
  .page-home .path-grid {
    grid-template-columns: repeat(2, minmax(0, 1fr));
  }
}

@media (min-width: 1060px) {
  .page-home .path-grid {
    grid-template-columns: repeat(4, minmax(0, 1fr));
  }
}

/* ---------- 通用分栏 ---------- */
.page-home .split {
  display: grid;
  grid-template-columns: minmax(0, 1fr);
  gap: clamp(24px, 4vw, 48px);
}

.page-home .split__main > p {
  margin: 0 0 clamp(14px, 2vw, 20px);
  max-width: 62ch;
  font-size: 16px;
  line-height: 1.85;
  color: var(--ink-500);
}

.page-home .split__aside {
  display: flex;
  flex-direction: column;
  gap: clamp(16px, 2.2vw, 24px);
}

@media (min-width: 1000px) {
  .page-home .split {
    grid-template-columns: minmax(0, 7fr) minmax(0, 4fr);
    column-gap: clamp(28px, 4vw, 56px);
  }
}

/* ---------- 02 编号与季度节奏 ---------- */
.page-home .code-strip {
  display: flex;
  flex-wrap: wrap;
  align-items: baseline;
  gap: 2px 0;
  margin: 0 0 clamp(14px, 2vw, 20px);
  padding: clamp(14px, 2vw, 24px) clamp(14px, 2vw, 22px);
  border: 2px solid var(--pine-300);
  background: rgba(246, 239, 228, 0.06);
  font-family: var(--font-mono);
  font-variant-numeric: tabular-nums;
  font-size: clamp(16px, 2.6vw, 30px);
  line-height: 1.3;
  letter-spacing: 0.02em;
}

.page-home .code-strip .seg-fixed {
  color: var(--laterite-200);
}

.page-home .code-strip .seg-slot {
  margin: 0 2px;
  padding-bottom: 2px;
  color: var(--pine-300);
  border-bottom: 2px dashed var(--pine-300);
}

.page-home .split__note {
  margin: 0 0 clamp(16px, 2.4vw, 22px);
  max-width: 56ch;
  font-size: 14px;
  line-height: 1.8;
  color: var(--laterite-200);
}

.page-home .chapter--pine .split__main > p {
  color: var(--laterite-200);
}

.page-home .chapter--pine .btn--ghost {
  color: var(--sand-050);
  background: transparent;
  border-color: var(--pine-300);
}

.page-home .chapter--pine .btn--ghost:hover,
.page-home .chapter--pine .btn--ghost:focus-visible {
  border-color: var(--sand-050);
  box-shadow: 4px 4px 0 var(--mineral-600);
}

.page-home .code-toggle {
  margin-bottom: clamp(16px, 2.4vw, 24px);
}

.page-home .code-detail {
  max-width: 62ch;
  margin: 0 0 clamp(20px, 3vw, 30px);
  padding: clamp(14px, 2vw, 22px);
  border-left: 3px solid var(--pine-300);
  background: rgba(246, 239, 228, 0.05);
  font-size: 14px;
  line-height: 1.85;
  color: var(--laterite-200);
}

.page-home .code-detail p {
  margin: 0 0 10px;
}

.page-home .code-detail p:last-child {
  margin-bottom: 0;
}

.page-home .ledger {
  display: grid;
  grid-template-columns: minmax(0, 1fr);
  gap: 14px;
  margin: clamp(24px, 3.5vw, 40px) 0 0;
  padding: 0;
  list-style: none;
}

.page-home .ledger__item {
  position: relative;
  padding-top: 22px;
}

.page-home .ledger__item::before {
  content: "";
  position: absolute;
  top: 0;
  left: 0;
  width: 12px;
  height: 12px;
  background: var(--pine-300);
}

.page-home .ledger__item::after {
  content: "";
  position: absolute;
  top: 5px;
  left: 18px;
  right: 0;
  height: 2px;
  background: rgba(127, 169, 140, 0.42);
}

.page-home .ledger__item:last-child::after {
  display: none;
}

.page-home .ledger__label {
  display: block;
  font-family: var(--font-mono);
  font-size: 13px;
  letter-spacing: 0.04em;
  line-height: 1.6;
  color: var(--sand-050);
}

@media (max-width: 759px) {
  .page-home .ledger__item {
    padding-top: 0;
    padding-left: 26px;
  }
  .page-home .ledger__item::before {
    top: 5px;
  }
  .page-home .ledger__item::after {
    display: none;
  }
}

@media (min-width: 760px) {
  .page-home .ledger {
    grid-template-columns: repeat(5, minmax(0, 1fr));
    gap: 10px;
  }
}

/* ---------- 03 参数、原料与周期 ---------- */
.page-home .fact-list {
  margin: 0 0 clamp(18px, 2.6vw, 26px);
  padding: 0;
  list-style: none;
  border-top: var(--line-soft);
}

.page-home .fact-list li {
  padding: 12px 0;
  border-bottom: var(--line-soft);
  font-size: 15px;
  line-height: 1.75;
  color: var(--ink-500);
}

.page-home .fact-list .num {
  font-weight: 700;
  color: var(--laterite-700);
}

.page-home .split__link {
  margin: 0 0 clamp(18px, 2.6vw, 26px);
}

.page-home .split__link a {
  color: var(--laterite-700);
  font-weight: 600;
  text-decoration: none;
  border-bottom: 2px solid var(--laterite-500);
}

.page-home .split__link a:hover,
.page-home .split__link a:focus-visible {
  color: var(--mineral-600);
  border-bottom-color: var(--mineral-600);
}

.page-home .split__aside .table-wrap {
  background: var(--sand-050);
  border: var(--line-strong);
  box-shadow: var(--shadow-card);
}

/* ---------- 图片容器 ---------- */
.page-home .media-frame {
  position: relative;
  margin: 0;
}

.page-home .media-frame img {
  display: block;
  width: 100%;
  max-width: 100%;
  height: auto;
  object-fit: cover;
  border: 2px solid var(--laterite-900);
  box-shadow: var(--shadow-card);
  background: var(--sand-100);
}

.page-home .media-frame--wide img {
  aspect-ratio: 16 / 9;
}

.page-home .split__aside .media-frame img {
  aspect-ratio: 3 / 2;
}

.page-home .chapter--pine .media-frame img {
  border-color: var(--sand-050);
  box-shadow: 6px 6px 0 rgba(58, 27, 18, 0.55);
}

/* ---------- 04 站点承诺 ---------- */
.page-home .commit-grid {
  display: grid;
  grid-template-columns: minmax(0, 1fr);
  gap: clamp(14px, 2vw, 20px);
}

.page-home .commit {
  padding: clamp(16px, 2.2vw, 26px);
  background: var(--sand-100);
  border: var(--line-strong);
  border-radius: var(--radius);
  box-shadow: var(--shadow-card);
}

.page-home .commit__title {
  margin: 0 0 10px;
  font-family: var(--font-serif);
  font-size: 19px;
  font-weight: 600;
  line-height: 1.4;
  color: var(--ink-900);
}

.page-home .commit__text {
  margin: 0;
  font-size: 15px;
  line-height: 1.8;
  color: var(--ink-500);
}

.page-home .commit-meta {
  max-width: 70ch;
  margin: clamp(20px, 3vw, 32px) 0 0;
  padding-left: 14px;
  border-left: 3px solid var(--laterite-200);
  font-size: 14px;
  line-height: 1.85;
  color: var(--ink-500);
}

.page-home .commit-cta {
  margin: clamp(18px, 2.6vw, 26px) 0 0;
}

@media (min-width: 820px) {
  .page-home .commit-grid {
    grid-template-columns: repeat(3, minmax(0, 1fr));
  }
}

/* ---------- 05 高频疑问 ---------- */
.page-home .ask-list {
  display: grid;
  grid-template-columns: minmax(0, 1fr);
  gap: 1px;
  margin: 0 0 clamp(22px, 3vw, 32px);
  padding: 0;
  list-style: none;
  background: var(--laterite-200);
  border: var(--line-strong);
}

.page-home .ask {
  padding: clamp(16px, 2.2vw, 26px);
  background: var(--sand-050);
}

.page-home .ask__key {
  display: inline-block;
  margin-bottom: 10px;
  padding: 3px 8px;
  font-family: var(--font-mono);
  font-size: 12px;
  letter-spacing: 0.1em;
  color: var(--sand-050);
  background: var(--pine-700);
}

.page-home .ask__q {
  margin: 0 0 8px;
  font-family: var(--font-serif);
  font-size: 17px;
  font-weight: 600;
  line-height: 1.45;
  color: var(--ink-900);
}

.page-home .ask__a {
  margin: 0;
  font-size: 14px;
  line-height: 1.8;
  color: var(--ink-500);
}

@media (min-width: 820px) {
  .page-home .ask-list {
    grid-template-columns: repeat(3, minmax(0, 1fr));
  }
}

/* ---------- 窄屏防溢出与动效退化 ---------- */
.page-home {
  overflow-x: hidden;
}

.page-home * {
  min-width: 0;
}

@media (prefers-reduced-motion: reduce) {
  .page-home [data-reveal] {
    opacity: 1 !important;
    transform: none !important;
  }
  .page-home .path-card,
  .page-home .path-card__link {
    transition: none;
  }
}