.page-home {
  --home-gap: 28px;
  --home-panel-pad: 26px;
  overflow-x: clip;
}

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

/* ---------- 首屏 ---------- */
.page-home .hero {
  position: relative;
  padding: 44px 0 56px;
  border-bottom: 1px solid var(--line);
}

.page-home .hero__inner {
  display: grid;
  gap: 34px;
  align-items: end;
}

.page-home .hero__lead {
  position: relative;
  min-width: 0;
}

.page-home .hero__crumb {
  color: var(--mist);
  margin: 0 0 20px;
}

.page-home .hero__title {
  font-family: var(--serif);
  font-weight: 800;
  font-size: clamp(38px, 8.4vw, 94px);
  line-height: 1.06;
  letter-spacing: -0.02em;
  color: var(--paper);
  margin: 0 0 22px;
}

.page-home .hero__sub {
  max-width: 40ch;
  font-size: 16px;
  line-height: 1.78;
  color: var(--silver);
  margin: 0;
}

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

.page-home .hero__figure {
  margin: 0;
  position: relative;
  border: 1px solid var(--line);
  background:
    repeating-linear-gradient(115deg, rgba(195, 201, 208, 0.05) 0 1px, transparent 1px 8px),
    linear-gradient(160deg, #1B1E23, #0B0C0E 70%);
  box-shadow: var(--shadow-soft);
}

.page-home .hero__figure img {
  width: 100%;
  height: 100%;
  aspect-ratio: 16 / 10;
  object-fit: cover;
  filter: saturate(0.82) brightness(0.92);
}

/* ---------- 章节索引 ---------- */
.page-home .chapter-index {
  list-style: none;
  margin: 34px 0 0;
  padding: 0;
  border-top: 1px solid var(--line);
}

.page-home .chapter-index__item {
  border-bottom: 1px solid var(--line);
}

.page-home .chapter-index__link {
  display: grid;
  grid-template-columns: 42px minmax(0, 1fr);
  gap: 14px;
  padding: 13px 6px;
  text-decoration: none;
  color: inherit;
  transition: background-color 200ms ease;
}

.page-home .chapter-index__num {
  font-family: var(--mono);
  font-size: 12px;
  letter-spacing: 0.12em;
  color: var(--gold);
  padding-top: 4px;
}

.page-home .chapter-index__text {
  display: flex;
  flex-direction: column;
  gap: 3px;
  min-width: 0;
}

.page-home .chapter-index__title {
  font-family: var(--serif);
  font-size: 19px;
  font-weight: 600;
  color: var(--paper);
}

.page-home .chapter-index__sum {
  font-size: 13px;
  line-height: 1.6;
  color: var(--mist);
  transition: color 200ms ease;
}

.page-home .chapter-index__link:hover,
.page-home .chapter-index__link:focus-visible {
  background-color: var(--panel-lift);
}

.page-home .chapter-index__link:hover .chapter-index__title,
.page-home .chapter-index__link:focus-visible .chapter-index__title {
  color: var(--gold-hi);
}

.page-home .chapter-index__link:hover .chapter-index__sum,
.page-home .chapter-index__link:focus-visible .chapter-index__sum {
  color: var(--silver);
}

/* ---------- 分流区 ---------- */
.page-home .paths,
.page-home .catalog,
.page-home .changelog {
  padding: 52px 0 var(--home-gap);
}

.page-home .paths__head,
.page-home .catalog__head {
  max-width: 62ch;
  margin-bottom: 30px;
}

.page-home .section-index {
  font-family: var(--mono);
  font-size: 11px;
  letter-spacing: 0.16em;
  color: var(--gold);
  margin: 0 0 14px;
}

.page-home .paths__title,
.page-home .catalog__title,
.page-home .changelog__title,
.page-home .scale__title,
.page-home .reach__title {
  font-family: var(--serif);
  font-weight: 700;
  font-size: clamp(25px, 4.6vw, 40px);
  line-height: 1.18;
  letter-spacing: -0.015em;
  color: var(--paper);
  margin: 0 0 14px;
}

.page-home .paths__intro,
.page-home .catalog__intro {
  font-size: 15px;
  line-height: 1.78;
  color: var(--silver);
  margin: 0;
}

.page-home .split {
  position: relative;
  border-top: 1px solid var(--line);
}

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

.page-home .split__tabs {
  display: flex;
  flex-wrap: wrap;
  gap: 8px;
  padding: 18px 0 0;
}

.page-home .split__tab {
  cursor: pointer;
  font-family: var(--mono);
  font-size: 12px;
  letter-spacing: 0.06em;
  color: var(--mist);
  padding: 9px 14px;
  border: 1px solid var(--line);
  border-radius: var(--radius);
  background-color: rgba(22, 24, 28, 0.6);
  transition: color 200ms ease, border-color 200ms ease, background-color 200ms ease;
}

.page-home .split__tab:hover {
  color: var(--silver);
  border-color: var(--mist);
}

.page-home #path-fixed:checked ~ .split__tabs .split__tab[for="path-fixed"],
.page-home #path-temp:checked ~ .split__tabs .split__tab[for="path-temp"] {
  color: var(--ink);
  background-color: var(--gold);
  border-color: var(--gold);
}

.page-home #path-fixed:focus-visible ~ .split__tabs .split__tab[for="path-fixed"],
.page-home #path-temp:focus-visible ~ .split__tabs .split__tab[for="path-temp"] {
  outline: 2px solid var(--gold-hi);
  outline-offset: 2px;
}

.page-home .split__panels {
  padding: 24px 0 0;
}

.page-home .split__panel {
  background-color: var(--panel-lift);
  border-left: 2px solid var(--gold);
  padding: var(--home-panel-pad);
}

.page-home .split__panel--temp {
  border-left-color: var(--cyan);
}

.page-home #path-fixed:checked ~ .split__panels .split__panel--temp {
  display: none;
}

.page-home #path-temp:checked ~ .split__panels .split__panel--fixed {
  display: none;
}

.page-home .split__panel-title {
  font-family: var(--serif);
  font-size: 21px;
  font-weight: 600;
  line-height: 1.4;
  color: var(--paper);
  margin: 0 0 12px;
}

.page-home .split__panel-text {
  font-size: 14.5px;
  line-height: 1.8;
  color: var(--silver);
  margin: 0 0 16px;
}

.page-home .split__list {
  list-style: none;
  margin: 0 0 18px;
  padding: 0;
}

.page-home .split__list li {
  position: relative;
  font-size: 14px;
  line-height: 1.72;
  color: var(--silver);
  padding: 9px 0 9px 18px;
  border-bottom: 1px solid var(--line-soft);
}

.page-home .split__list li::before {
  content: "";
  position: absolute;
  left: 0;
  top: 17px;
  width: 7px;
  height: 1px;
  background-color: var(--gold);
}

.page-home .split__panel--temp .split__list li::before {
  background-color: var(--cyan);
}

.page-home .split__fit {
  font-size: 13px;
  line-height: 1.7;
  color: var(--mist);
  margin: 0 0 20px;
  display: flex;
  flex-wrap: wrap;
  gap: 8px;
  align-items: baseline;
}

.page-home .split__fit .label {
  color: var(--cyan);
}

.page-home .split__btn {
  text-decoration: none;
  display: inline-block;
}

.page-home .split__figure {
  margin: 26px 0 0;
  border: 1px solid var(--line);
  overflow: hidden;
}

.page-home .split__figure img {
  width: 100%;
  aspect-ratio: 4 / 5;
  object-fit: cover;
  filter: grayscale(0.3) brightness(0.86);
}

/* ---------- 栏目总览 ---------- */
.page-home .catalog__band {
  margin: 0 0 30px;
  border-top: 1px solid var(--line);
  border-bottom: 1px solid var(--line);
  overflow: hidden;
}

.page-home .catalog__band img {
  width: 100%;
  aspect-ratio: 2 / 1;
  object-fit: cover;
  opacity: 0.78;
}

.page-home .catalog__list {
  list-style: none;
  margin: 0;
  padding: 0;
  display: grid;
  gap: 0;
  border-top: 1px solid var(--line);
}

.page-home .catalog__item {
  display: grid;
  grid-template-columns: 46px minmax(0, 1fr);
  gap: 4px 12px;
  padding: 13px 2px;
  border-bottom: 1px solid var(--line-soft);
}

.page-home .catalog__code {
  color: var(--gold);
  font-size: 11px;
  padding-top: 3px;
}

.page-home .catalog__name {
  font-size: 15px;
  font-weight: 500;
  color: var(--paper);
  line-height: 1.5;
}

.page-home .catalog__meta {
  grid-column: 2;
  font-family: var(--mono);
  font-size: 11px;
  letter-spacing: 0.04em;
  color: var(--mist);
  line-height: 1.6;
}

.page-home .catalog__meta a {
  color: var(--mist);
  text-decoration: none;
  border-bottom: 1px solid var(--line);
  transition: color 200ms ease, border-color 200ms ease;
}

.page-home .catalog__meta a:hover,
.page-home .catalog__meta a:focus-visible {
  color: var(--gold-hi);
  border-color: var(--gold);
}

/* ---------- 变更公示条 ---------- */
.page-home .notice {
  border-top: 1px solid var(--cinnabar);
  border-bottom: 1px solid var(--line);
  background-color: rgba(178, 58, 44, 0.08);
  margin: 8px 0 var(--home-gap);
}

.page-home .notice__inner {
  display: flex;
  flex-wrap: wrap;
  align-items: baseline;
  gap: 10px 18px;
  padding-top: 16px;
  padding-bottom: 16px;
}

.page-home .notice__tag {
  color: var(--cinnabar);
  flex: none;
}

.page-home .notice__text {
  margin: 0;
  font-size: 13.5px;
  line-height: 1.7;
  color: var(--silver);
  flex: 1 1 260px;
  min-width: 0;
}

.page-home .notice__text a {
  color: var(--gold-hi);
  text-decoration: none;
  border-bottom: 1px solid var(--gold);
  margin-left: 6px;
}

.page-home .notice__text a:hover,
.page-home .notice__text a:focus-visible {
  color: var(--gold);
}

/* ---------- 变更说明 ---------- */
.page-home .changelog__inner {
  display: grid;
  gap: 26px;
}

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

.page-home .changelog__figure img {
  width: 100%;
  aspect-ratio: 1 / 1;
  object-fit: cover;
  filter: sepia(0.18) brightness(0.82);
}

.page-home .changelog__text {
  font-size: 15px;
  line-height: 1.8;
  color: var(--silver);
  margin: 0 0 20px;
}

.page-home .changelog__list {
  list-style: none;
  margin: 0 0 22px;
  padding: 0;
  border-top: 1px solid var(--line);
}

.page-home .changelog__list li {
  display: grid;
  gap: 4px;
  padding: 12px 0;
  border-bottom: 1px solid var(--line-soft);
  font-size: 14px;
  line-height: 1.7;
  color: var(--silver);
}

.page-home .changelog__list .label {
  color: var(--cyan);
}

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

.page-home .changelog__actions .btn {
  text-decoration: none;
}

/* ---------- 规模数据（浅色带） ---------- */
.page-home .scale {
  background-color: var(--paper);
  color: var(--ink);
  padding: 52px 0 56px;
  margin-top: var(--home-gap);
  border-top: 1px solid var(--gold);
}

.page-home .scale .section-index {
  color: #7A5F1F;
}

.page-home .scale__head {
  max-width: 60ch;
  margin-bottom: 30px;
}

.page-home .scale__title {
  color: var(--ink);
}

.page-home .scale__intro {
  font-size: 15px;
  line-height: 1.78;
  color: rgba(11, 12, 14, 0.72);
  margin: 0;
}

.page-home .scale__grid {
  display: grid;
  gap: 0;
  margin: 0 0 28px;
  border-top: 1px solid rgba(11, 12, 14, 0.22);
}

.page-home .scale__cell {
  padding: 18px 0;
  border-bottom: 1px solid rgba(11, 12, 14, 0.14);
}

.page-home .scale__key {
  font-family: var(--mono);
  font-size: 11px;
  letter-spacing: 0.08em;
  color: rgba(11, 12, 14, 0.6);
  margin-bottom: 8px;
}

.page-home .scale__value {
  margin: 0;
  font-family: var(--serif);
  font-weight: 700;
  font-size: clamp(32px, 7vw, 52px);
  line-height: 1;
  letter-spacing: -0.02em;
  color: var(--ink);
  display: flex;
  align-items: baseline;
  gap: 8px;
}

.page-home .scale__unit {
  font-family: var(--sans);
  font-size: 13px;
  font-weight: 500;
  letter-spacing: 0;
  color: rgba(11, 12, 14, 0.62);
}

.page-home .scale__notes {
  display: grid;
  gap: 20px;
  align-items: start;
  border-top: 1px solid rgba(11, 12, 14, 0.22);
  padding-top: 24px;
}

.page-home .scale__notes p {
  margin: 0;
  font-size: 14.5px;
  line-height: 1.8;
  color: rgba(11, 12, 14, 0.78);
  max-width: 68ch;
}

.page-home .scale__notes .btn {
  text-decoration: none;
  justify-self: start;
}

/* ---------- 联络 ---------- */
.page-home .reach {
  padding: 52px 0 64px;
}

.page-home .reach__inner {
  display: grid;
  gap: 32px;
}

.page-home .reach__text {
  font-size: 15px;
  line-height: 1.8;
  color: var(--silver);
  margin: 0 0 22px;
  max-width: 58ch;
}

.page-home .reach__main .btn {
  text-decoration: none;
}

.page-home .reach__aside {
  display: grid;
  gap: 22px;
  min-width: 0;
}

.page-home .feedback-box {
  border-top: 2px solid var(--cinnabar);
  background-color: var(--panel);
  padding: 20px;
}

.page-home .feedback-box__eyebrow {
  color: var(--cinnabar);
  margin: 0 0 10px;
}

.page-home .feedback-box__title {
  font-family: var(--serif);
  font-size: 20px;
  font-weight: 600;
  line-height: 1.4;
  color: var(--paper);
  margin: 0 0 10px;
}

.page-home .feedback-box__desc {
  font-size: 13.5px;
  line-height: 1.75;
  color: var(--silver);
  margin: 0 0 16px;
}

.page-home .feedback-box__btn {
  text-decoration: none;
  display: inline-block;
}

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

.page-home .contact-list__item {
  display: grid;
  gap: 3px;
  padding: 12px 0;
  border-bottom: 1px solid var(--line-soft);
}

.page-home .contact-list__key {
  color: var(--mist);
}

.page-home .contact-list__value {
  font-size: 14.5px;
  line-height: 1.6;
  color: var(--paper);
  word-break: break-word;
}

/* ---------- 断点 ---------- */
@media (min-width: 640px) {
  .page-home .hero {
    padding: 60px 0 68px;
  }

  .page-home .catalog__list {
    grid-template-columns: repeat(2, minmax(0, 1fr));
    column-gap: 30px;
  }

  .page-home .scale__grid {
    grid-template-columns: repeat(2, minmax(0, 1fr));
    column-gap: 32px;
  }

  .page-home .reach__aside {
    grid-template-columns: minmax(0, 1fr) minmax(0, 1fr);
    align-items: start;
  }
}

@media (min-width: 1024px) {
  .page-home {
    --home-gap: 40px;
    --home-panel-pad: 40px;
  }

  .page-home .hero {
    padding: 84px 0 92px;
  }

  .page-home .hero__inner {
    grid-template-columns: minmax(0, 7fr) minmax(0, 5fr);
    gap: 56px;
  }

  .page-home .hero__note {
    display: block;
    position: absolute;
    left: -30px;
    top: 4px;
    writing-mode: vertical-rl;
    font-family: var(--mono);
    font-size: 11px;
    letter-spacing: 0.24em;
    color: var(--mist);
    text-transform: uppercase;
  }

  .page-home .hero__figure img {
    aspect-ratio: 4 / 5;
  }

  .page-home .paths,
  .page-home .catalog,
  .page-home .changelog {
    padding-top: 76px;
  }

  .page-home .split__panels {
    padding-top: 30px;
    padding-right: 210px;
  }

  .page-home .split__figure {
    position: absolute;
    right: 0;
    bottom: 0;
    width: 190px;
    margin: 0;
    border-right: none;
    border-bottom: none;
    opacity: 0.92;
  }

  .page-home .split__figure img {
    aspect-ratio: 4 / 5;
  }

  .page-home .catalog__list {
    grid-template-columns: repeat(3, minmax(0, 1fr));
    column-gap: 40px;
  }

  .page-home .changelog__inner {
    grid-template-columns: minmax(0, 4fr) minmax(0, 7fr);
    gap: 48px;
    align-items: start;
  }

  .page-home .changelog__figure {
    margin-top: 8px;
    margin-right: 24px;
  }

  .page-home .scale {
    padding: 76px 0 80px;
  }

  .page-home .scale__grid {
    grid-template-columns: repeat(4, minmax(0, 1fr));
    column-gap: 36px;
  }

  .page-home .scale__notes {
    grid-template-columns: minmax(0, 1fr) auto;
    align-items: center;
    column-gap: 40px;
  }

  .page-home .scale__notes .btn {
    justify-self: end;
  }

  .page-home .reach {
    padding: 80px 0 92px;
  }

  .page-home .reach__inner {
    grid-template-columns: minmax(0, 6fr) minmax(0, 5fr);
    gap: 56px;
    align-items: start;
  }

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

@media (prefers-reduced-motion: reduce) {
  .page-home .chapter-index__link,
  .page-home .split__tab,
  .page-home .catalog__meta a {
    transition: none;
  }
}
<<<END>>>