.page-home {
  --home-gap: clamp(20px, 4vw, 56px);
  --home-rhythm: clamp(56px, 9vw, 128px);
  color: var(--text);
}

.page-home img {
  display: block;
  max-width: 100%;
  height: auto;
}

.page-home .prose {
  margin: 0 0 16px;
  line-height: 1.8;
}

/* ---------- 首屏 ---------- */
.page-home .home-hero {
  position: relative;
  padding: clamp(20px, 4vw, 44px) 0 clamp(48px, 8vw, 104px);
}

.page-home .home-hero__grid {
  display: grid;
  gap: clamp(32px, 5vw, 64px);
  align-items: center;
  margin-top: clamp(20px, 4vw, 40px);
}

.page-home .home-hero__title {
  margin: 12px 0 20px;
  font-size: clamp(30px, 5vw, 54px);
  line-height: 1.12;
  letter-spacing: -0.02em;
  font-weight: 900;
}

.page-home .home-hero__lead {
  max-width: 34em;
  line-height: 1.85;
  color: var(--text);
}

.page-home .home-hero__actions {
  display: flex;
  flex-wrap: wrap;
  gap: 12px;
  margin-top: 28px;
}

.page-home .home-hero__aside {
  margin: 24px 0 0;
  font-size: 12px;
  letter-spacing: 0.06em;
  color: var(--meta);
  padding-left: 14px;
  border-left: 2px solid var(--maple);
}

.page-home .home-hero__visual {
  position: relative;
  isolation: isolate;
}

.page-home .home-hero__figure {
  position: relative;
  z-index: 2;
  overflow: hidden;
  border-radius: var(--r-lg);
  border: 1px solid var(--line);
}

.page-home .hero-art {
  position: absolute;
  z-index: 1;
  top: -8%;
  left: -8%;
  width: 116%;
  height: auto;
  color: var(--ink);
  opacity: 0.28;
  pointer-events: none;
}

.page-home .hero-art__vein {
  opacity: 0.7;
}

.page-home .hero-art__dot {
  color: var(--maple);
}

/* ---------- 章节通用头 ---------- */
.page-home .chapter__head {
  max-width: 46rem;
  margin-bottom: clamp(28px, 4vw, 48px);
}

.page-home .chapter__head--flush {
  margin-bottom: 20px;
}

.page-home .chapter__title {
  margin: 8px 0 12px;
  font-size: clamp(24px, 3.4vw, 34px);
  line-height: 1.24;
  letter-spacing: -0.01em;
  font-weight: 800;
}

.page-home .chapter__note {
  margin: 0;
  color: var(--meta);
  font-size: 15px;
  line-height: 1.75;
  max-width: 36em;
}

.page-home .chapter__head--invert .chapter__title {
  color: var(--snow);
}

.page-home .chapter__head--invert .chapter__note {
  color: rgba(247, 245, 240, 0.68);
}

.page-home .chapter__head--invert .chapter__num {
  color: var(--amber);
}

/* ---------- 01 三步主线 ---------- */
.page-home .home-paths {
  padding: var(--home-rhythm) 0;
  border-top: 1px solid var(--line);
}

.page-home .path-tree {
  list-style: none;
  margin: 0;
  padding: 0;
  display: grid;
  gap: 0;
}

.page-home .path-node {
  position: relative;
  padding: 26px 0 26px 30px;
  border-left: 2px solid var(--line-strong);
}

.page-home .path-node::before {
  content: "";
  position: absolute;
  left: -8px;
  top: 30px;
  width: 12px;
  height: 12px;
  border-radius: 50%;
  background: var(--snow);
  border: 2px solid var(--maple);
}

.page-home .path-node__num {
  margin: 0 0 8px;
  font-size: 12px;
  letter-spacing: 0.08em;
  color: var(--maple);
}

.page-home .path-node__title {
  margin: 0 0 10px;
  font-size: 20px;
  line-height: 1.4;
  font-weight: 700;
}

.page-home .path-node__text {
  margin: 0 0 16px;
  font-size: 15px;
  line-height: 1.8;
  color: var(--text);
  max-width: 32em;
}

.page-home .path-node__link {
  display: inline-block;
  font-size: 14px;
  font-weight: 600;
  color: var(--fir);
  text-decoration: none;
  border-bottom: 1px solid rgba(47, 93, 78, 0.35);
  padding-bottom: 2px;
}

.page-home .path-node__link:hover,
.page-home .path-node__link:focus-visible {
  color: var(--ink);
  border-bottom-color: var(--ink);
}

/* ---------- 02 规模 ---------- */
.page-home .home-scale {
  padding: var(--home-rhythm) 0;
}

.page-home .scale-band {
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  margin: 0;
  border-top: 1px solid var(--line-strong);
  border-bottom: 1px solid var(--line-strong);
}

.page-home .scale-item {
  padding: 20px 4px 20px 0;
  border-bottom: 1px solid var(--line);
}

.page-home .scale-item dt {
  margin: 0 0 8px;
  font-size: 12px;
  letter-spacing: 0.06em;
  color: var(--meta);
}

.page-home .scale-item dd {
  margin: 0;
  display: flex;
  align-items: baseline;
  gap: 6px;
  flex-wrap: wrap;
}

.page-home .scale-num {
  font-family: var(--font-display);
  font-size: clamp(34px, 5vw, 48px);
  font-weight: 900;
  letter-spacing: -0.02em;
  line-height: 1;
  color: var(--ink);
}

.page-home .scale-unit {
  font-size: 13px;
  color: var(--meta);
}

.page-home .home-scale__foot {
  display: grid;
  gap: clamp(28px, 4vw, 48px);
  margin-top: clamp(32px, 4vw, 48px);
  align-items: start;
}

.page-home .home-scale__text {
  max-width: 38em;
  font-size: 15px;
}

.page-home .home-scale__link {
  display: inline-block;
  margin-top: 4px;
  font-size: 14px;
  font-weight: 600;
  color: var(--maple);
  text-decoration: none;
  border-bottom: 1px solid rgba(192, 67, 46, 0.35);
}

.page-home .home-scale__link:hover,
.page-home .home-scale__link:focus-visible {
  color: var(--ink);
  border-bottom-color: var(--ink);
}

.page-home .home-scale__figure {
  margin: 0;
  overflow: hidden;
  border-radius: var(--r-md);
  border: 1px solid var(--line);
}

.page-home .home-scale__figure figcaption {
  padding: 10px 14px;
  font-size: 12px;
  color: var(--meta);
  background: var(--snow);
}

/* ---------- 03 交付物 ---------- */
.page-home .home-deliver {
  padding: var(--home-rhythm) 0;
  border-top: 1px solid var(--line);
}

.page-home .deliver-grid {
  display: grid;
  gap: 16px;
  grid-template-columns: minmax(0, 1fr);
}

.page-home .deliver-card {
  position: relative;
  padding: 26px 22px 24px;
  border: 1px solid var(--line);
  border-radius: var(--r-md);
  background: var(--snow);
}

.page-home .deliver-card::after {
  content: "";
  position: absolute;
  left: 22px;
  right: 22px;
  bottom: 0;
  height: 3px;
  border-radius: 3px 3px 0 0;
  background: var(--maple);
  opacity: 0.85;
}

.page-home .deliver-card__num {
  margin: 0 0 14px;
  font-size: 12px;
  letter-spacing: 0.08em;
  color: var(--maple);
}

.page-home .deliver-card__title {
  margin: 0 0 10px;
  font-size: 19px;
  line-height: 1.4;
  font-weight: 700;
}

.page-home .deliver-card__text {
  margin: 0 0 16px;
  font-size: 15px;
  line-height: 1.8;
}

.page-home .deliver-card__meta {
  margin: 0;
  font-size: 12px;
  line-height: 1.6;
  color: var(--fir);
  padding-top: 12px;
  border-top: 1px dashed var(--line-strong);
}

/* ---------- 04 版本对照 ---------- */
.page-home .home-version {
  padding: var(--home-rhythm) 0;
  color: var(--snow);
}

.page-home .version-layout {
  display: grid;
  gap: clamp(28px, 4vw, 56px);
  margin-bottom: clamp(32px, 4vw, 56px);
}

.page-home .version-note__text {
  margin: 0 0 14px;
  font-size: 16px;
  line-height: 1.85;
  color: rgba(247, 245, 240, 0.9);
  max-width: 34em;
}

.page-home .version-note__small {
  margin: 0 0 14px;
  font-size: 12px;
  letter-spacing: 0.06em;
  color: rgba(247, 245, 240, 0.55);
}

.page-home .version-note__link {
  display: inline-block;
  font-size: 14px;
  font-weight: 600;
  color: var(--amber);
  text-decoration: none;
  border-bottom: 1px solid rgba(224, 138, 60, 0.5);
  padding-bottom: 2px;
}

.page-home .version-note__link:hover,
.page-home .version-note__link:focus-visible {
  color: var(--snow);
  border-bottom-color: var(--snow);
}

.page-home .ver-timeline {
  list-style: none;
  margin: 0;
  padding: 0 0 0 20px;
  border-left: 1px solid rgba(247, 245, 240, 0.28);
  display: grid;
  gap: 22px;
}

.page-home .ver-timeline__item {
  position: relative;
}

.page-home .ver-timeline__item::before {
  content: "";
  position: absolute;
  left: -26px;
  top: 5px;
  width: 9px;
  height: 9px;
  border-radius: 50%;
  background: var(--ink);
  border: 2px solid var(--amber);
}

.page-home .ver-timeline__tag {
  margin: 0 0 6px;
  font-size: 12px;
  letter-spacing: 0.06em;
  color: var(--amber);
}

.page-home .ver-timeline__text {
  margin: 0;
  font-size: 14px;
  line-height: 1.7;
  color: rgba(247, 245, 240, 0.82);
}

.page-home .ver-pair {
  display: grid;
  gap: 20px;
  grid-template-columns: minmax(0, 1fr);
}

.page-home .ver-col {
  padding: 20px 18px;
  border-radius: var(--r-md);
  background: var(--ink-2);
  border: 1px solid rgba(247, 245, 240, 0.14);
}

.page-home .ver-col--old {
  background: rgba(247, 245, 240, 0.06);
}

.page-home .ver-col__head {
  margin: 0 0 14px;
  font-size: 12px;
  letter-spacing: 0.06em;
  color: var(--snow);
}

.page-home .ver-col--old .ver-col__head {
  color: rgba(247, 245, 240, 0.6);
}

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

.page-home .ver-row {
  position: relative;
  padding: 10px 0 10px 14px;
  font-size: 14px;
  line-height: 1.6;
  color: rgba(247, 245, 240, 0.86);
  border-bottom: 1px solid rgba(247, 245, 240, 0.1);
}

.page-home .ver-row:last-child {
  border-bottom: none;
}

.page-home .ver-row--diff {
  background: rgba(192, 67, 46, 0.16);
  border-radius: 4px;
}

.page-home .ver-row--diff::before {
  content: "";
  position: absolute;
  left: 0;
  top: 8px;
  bottom: 8px;
  width: 3px;
  border-radius: 2px;
  background: var(--maple);
}

.page-home .ver-col--old .ver-row--diff {
  background: rgba(192, 67, 46, 0.1);
}

/* ---------- 05 五步 ---------- */
.page-home .home-steps {
  padding: var(--home-rhythm) 0;
}

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

.page-home .step {
  padding: 22px 0;
  border-top: 1px solid var(--line);
}

.page-home .step:last-child {
  border-bottom: 1px solid var(--line);
}

.page-home .step__num {
  margin: 0 0 8px;
  font-size: 12px;
  letter-spacing: 0.08em;
  color: var(--maple);
}

.page-home .step__title {
  margin: 0 0 8px;
  font-size: 18px;
  font-weight: 700;
  line-height: 1.4;
}

.page-home .step__text {
  margin: 0 0 10px;
  font-size: 14px;
  line-height: 1.75;
  color: var(--text);
}

.page-home .step__out {
  margin: 0;
  font-family: var(--font-mono);
  font-size: 12px;
  letter-spacing: 0.04em;
  color: var(--fir);
}

.page-home .home-steps__foot {
  margin: clamp(24px, 3vw, 36px) 0 0;
  font-size: 15px;
  color: var(--meta);
}

.page-home .home-steps__foot a {
  color: var(--ink);
  font-weight: 600;
  text-decoration: none;
  border-bottom: 1px solid var(--line-strong);
}

.page-home .home-steps__foot a:hover,
.page-home .home-steps__foot a:focus-visible {
  color: var(--maple);
  border-bottom-color: var(--maple);
}

/* ---------- 06 平板 ---------- */
.page-home .home-tablet {
  padding: var(--home-rhythm) 0;
  background: var(--mist);
}

.page-home .home-tablet__grid {
  display: grid;
  gap: clamp(28px, 4vw, 56px);
  align-items: start;
}

.page-home .home-tablet__copy .prose {
  font-size: 15px;
  max-width: 34em;
}

.page-home .tablet-list {
  list-style: none;
  margin: 24px 0 0;
  padding: 0;
  display: grid;
  gap: 0;
}

.page-home .tablet-list__item {
  padding: 16px 0;
  border-top: 1px solid var(--line-strong);
}

.page-home .tablet-list__title {
  margin: 0 0 6px;
  font-size: 12px;
  letter-spacing: 0.08em;
  color: var(--ink);
}

.page-home .tablet-list__text {
  margin: 0;
  font-size: 14px;
  line-height: 1.75;
  color: var(--text);
  max-width: 32em;
}

.page-home .home-tablet__figure {
  margin: 0;
  overflow: hidden;
  border-radius: var(--r-md);
  border: 1px solid var(--line-strong);
  background: var(--snow);
}

.page-home .home-tablet__figure figcaption {
  padding: 10px 14px;
  font-size: 12px;
  color: var(--meta);
}

/* ---------- 收尾 ---------- */
.page-home .home-close {
  padding: var(--home-rhythm) 0;
  color: var(--snow);
}

.page-home .home-close__title {
  margin: 0 0 18px;
  color: var(--snow);
  font-size: clamp(26px, 3.6vw, 40px);
  line-height: 1.2;
  letter-spacing: -0.01em;
  font-weight: 800;
}

.page-home .home-close__lead {
  margin: 0 0 28px;
  font-size: 16px;
  line-height: 1.85;
  color: rgba(247, 245, 240, 0.86);
  max-width: 34em;
}

.page-home .home-close__note {
  margin: 0 0 14px;
  font-size: 12px;
  letter-spacing: 0.06em;
  color: var(--amber);
}

.page-home .home-close__list {
  margin: 0 0 32px;
  padding: 0;
  list-style: none;
  counter-reset: close-item;
  display: grid;
  gap: 10px;
  max-width: 32em;
}

.page-home .home-close__list li {
  position: relative;
  padding-left: 34px;
  font-size: 15px;
  line-height: 1.7;
  color: rgba(247, 245, 240, 0.9);
  counter-increment: close-item;
}

.page-home .home-close__list li::before {
  content: counter(close-item, decimal-leading-zero);
  position: absolute;
  left: 0;
  top: 2px;
  font-family: var(--font-mono);
  font-size: 12px;
  letter-spacing: 0.06em;
  color: var(--amber);
}

.page-home .home-close__actions {
  display: flex;
  flex-wrap: wrap;
  gap: 12px;
}

/* ---------- 断点 ---------- */
@media (min-width: 700px) {
  .page-home .scale-band {
    grid-template-columns: repeat(3, minmax(0, 1fr));
  }

  .page-home .scale-item {
    padding: 24px 20px;
    border-bottom: none;
    border-left: 1px solid var(--line);
  }

  .page-home .scale-item:first-child {
    border-left: none;
    padding-left: 0;
  }

  .page-home .deliver-grid {
    grid-template-columns: repeat(2, minmax(0, 1fr));
    gap: 20px;
  }

  .page-home .deliver-card--drop {
    transform: translateY(18px);
  }

  .page-home .ver-pair {
    grid-template-columns: repeat(2, minmax(0, 1fr));
    gap: 24px;
  }
}

@media (min-width: 900px) {
  .page-home .home-hero__grid {
    grid-template-columns: minmax(0, 5fr) minmax(0, 7fr);
  }

  .page-home .home-scale__foot {
    grid-template-columns: minmax(0, 6fr) minmax(0, 6fr);
  }

  .page-home .home-tablet__grid {
    grid-template-columns: minmax(0, 6fr) minmax(0, 6fr);
    gap: clamp(32px, 4vw, 64px);
  }

  .page-home .version-layout {
    grid-template-columns: minmax(0, 5fr) minmax(0, 7fr);
    align-items: start;
  }

  .page-home .path-tree {
    grid-template-columns: repeat(3, minmax(0, 1fr));
    gap: 0 clamp(20px, 3vw, 40px);
  }

  .page-home .path-node {
    border-left: none;
    border-top: 2px solid var(--line-strong);
    padding: 32px 16px 0 0;
  }

  .page-home .path-node::before {
    left: 0;
    top: -8px;
  }
}

@media (min-width: 1080px) {
  .page-home .scale-band {
    grid-template-columns: repeat(5, minmax(0, 1fr));
  }

  .page-home .steps-list {
    grid-template-columns: repeat(5, minmax(0, 1fr));
    gap: 0 clamp(16px, 2vw, 28px);
  }

  .page-home .step {
    border-top: 2px solid var(--ink);
    padding: 20px 0 0;
  }

  .page-home .step:last-child {
    border-bottom: none;
  }
}

@media (prefers-reduced-motion: reduce) {
  .page-home .deliver-card--drop {
    transform: none;
  }
}
<<<END>>>