.page-home {
  --home-pad: clamp(56px, 8vw, 112px);
  --home-gap: clamp(20px, 3vw, 40px);
  display: block;
  background: var(--ink-900);
  color: var(--text-primary);
}

.page-home [data-reveal] {
  transition: opacity 0.4s var(--ease), transform 0.4s var(--ease);
}

/* ===== 首屏 ===== */
.page-home .hero {
  position: relative;
  overflow: hidden;
  isolation: isolate;
  background: var(--ink-950);
  padding-block: clamp(44px, 7vw, 96px) clamp(48px, 6vw, 88px);
}

.page-home .hero__backdrop {
  position: absolute;
  inset: 0;
  z-index: 0;
}

.page-home .hero__backdrop img {
  display: block;
  width: 100%;
  height: 100%;
  object-fit: cover;
  opacity: 0.32;
}

.page-home .hero__backdrop::after {
  content: "";
  position: absolute;
  inset: 0;
  background: linear-gradient(
    180deg,
    rgba(5, 19, 31, 0.5) 0%,
    rgba(5, 19, 31, 0.82) 58%,
    var(--ink-950) 100%
  );
}

.page-home .hero::before {
  content: "";
  position: absolute;
  inset: 0;
  z-index: 1;
  pointer-events: none;
  background-image: radial-gradient(rgba(55, 224, 216, 0.35) 1px, transparent 1px);
  background-size: 28px 28px;
  opacity: 0.07;
}

.page-home .hero__inner {
  position: relative;
  z-index: 2;
  display: grid;
  gap: var(--home-gap);
}

.page-home .hero__eyebrow {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  margin: 0 0 18px;
  padding: 6px 14px;
  border: 1px solid var(--line);
  border-radius: var(--radius-pill);
  font-family: var(--font-mono);
  font-size: 12px;
  letter-spacing: 0.08em;
  color: var(--cyan-400);
  text-transform: uppercase;
}

.page-home .hero__title {
  margin: 0;
  font-family: var(--font-display);
  font-weight: 900;
  font-size: clamp(34px, 5.4vw, 72px);
  line-height: 1.12;
  letter-spacing: -0.02em;
  color: var(--text-primary);
}

.page-home .hero__lead {
  margin: 22px 0 0;
  max-width: 46ch;
  font-family: var(--font-body);
  font-size: clamp(15px, 1.6vw, 18px);
  line-height: 1.85;
  letter-spacing: 0.01em;
  color: var(--text-secondary);
}

.page-home .hero__actions {
  display: flex;
  flex-wrap: wrap;
  gap: 12px;
  margin-top: 30px;
}

.page-home .hero__cards {
  display: grid;
  gap: 12px;
}

.page-home .doc-card {
  padding: 16px 18px;
  border: 1px solid rgba(55, 224, 216, 0.08);
  border-radius: var(--radius-lg);
  background: linear-gradient(160deg, rgba(13, 44, 66, 0.96), rgba(8, 30, 46, 0.94));
  box-shadow: var(--shadow-soft);
  transition: border-color 0.32s var(--ease), transform 0.32s var(--ease);
}

.page-home .doc-card:hover {
  border-color: var(--cyan-400);
  transform: translateY(-4px);
}

.page-home .doc-card--lead {
  padding: 14px;
}

.page-home .doc-card__media {
  overflow: hidden;
  margin-bottom: 14px;
  border-radius: var(--radius-md);
  aspect-ratio: 4 / 3;
  background: var(--ink-950);
}

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

.page-home .doc-card__meta {
  margin: 0 0 6px;
  font-family: var(--font-mono);
  font-size: 11px;
  letter-spacing: 0.1em;
  color: var(--gold-400);
}

.page-home .doc-card__title {
  margin: 0 0 6px;
  font-family: var(--font-heading);
  font-weight: 700;
  font-size: 16px;
  line-height: 1.35;
  color: var(--text-primary);
}

.page-home .doc-card__text {
  margin: 0 0 12px;
  font-size: 13px;
  line-height: 1.7;
  color: var(--text-secondary);
}

.page-home .doc-card .tag {
  font-family: var(--font-mono);
  font-size: 11px;
  letter-spacing: 0.08em;
}

/* ===== 通用章节 ===== */
.page-home .band {
  padding-block: var(--home-pad);
}

.page-home .band--duo {
  background: var(--ink-900);
}

.page-home .band--idx {
  background: var(--ink-950);
  border-block: 1px solid var(--line);
}

.page-home .band--vbar {
  padding-block: clamp(28px, 4vw, 48px);
  background: var(--ink-800);
}

.page-home .band--reach {
  background: var(--ink-900);
}

.page-home .band--notes {
  background: var(--ink-950);
}

.page-home .band__title {
  margin: 12px 0 0;
  font-family: var(--font-heading);
  font-weight: 700;
  font-size: clamp(24px, 3vw, 40px);
  line-height: 1.2;
  letter-spacing: -0.01em;
  color: var(--text-primary);
}

/* ===== 双入口 ===== */
.page-home .duo {
  display: grid;
  gap: 16px;
  margin-top: clamp(28px, 4vw, 44px);
}

.page-home .duo__card {
  display: flex;
  flex-direction: column;
  gap: 10px;
  padding: clamp(20px, 3vw, 34px);
  border: 1px solid rgba(55, 224, 216, 0.08);
  border-radius: var(--radius-lg);
  background: var(--ink-800);
  color: inherit;
  text-decoration: none;
  transition: border-color 0.32s var(--ease), transform 0.32s var(--ease),
    background-color 0.32s var(--ease);
}

.page-home .duo__card:hover,
.page-home .duo__card:focus-visible {
  border-color: var(--cyan-400);
  transform: translateY(-4px);
  background: var(--ink-700);
}

.page-home .duo__num {
  font-family: var(--font-mono);
  font-size: 26px;
  line-height: 1;
  letter-spacing: 0.04em;
  color: var(--gold-400);
}

.page-home .duo__name {
  font-family: var(--font-heading);
  font-weight: 700;
  font-size: clamp(20px, 2.4vw, 28px);
  color: var(--text-primary);
}

.page-home .duo__desc {
  font-size: 15px;
  line-height: 1.8;
  color: var(--text-secondary);
}

.page-home .duo__meta {
  margin-top: auto;
  padding-top: 12px;
  border-top: 1px solid var(--line-soft);
  font-family: var(--font-mono);
  font-size: 12px;
  letter-spacing: 0.08em;
  color: var(--cyan-400);
}

.page-home .duo__foot {
  margin: 22px 0 0;
  font-size: 14px;
}

.page-home .duo__foot a {
  color: var(--text-secondary);
  text-decoration: none;
  border-bottom: 1px solid var(--line);
  padding-bottom: 2px;
  transition: color 0.24s var(--ease), border-color 0.24s var(--ease);
}

.page-home .duo__foot a:hover,
.page-home .duo__foot a:focus-visible {
  color: var(--cyan-400);
  border-color: var(--cyan-400);
}

/* ===== 索引带 ===== */
.page-home .idx {
  list-style: none;
  margin: clamp(28px, 4vw, 44px) 0 0;
  padding: 0;
  border-top: 1px solid var(--line);
}

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

.page-home .idx__link {
  display: grid;
  grid-template-columns: 52px minmax(0, 1fr);
  grid-template-areas:
    "num name"
    "num desc";
  align-items: baseline;
  gap: 2px 14px;
  padding: 18px 0;
  color: inherit;
  text-decoration: none;
  transition: background-color 0.28s var(--ease);
}

.page-home .idx__link:hover,
.page-home .idx__link:focus-visible {
  background: rgba(55, 224, 216, 0.05);
}

.page-home .idx__num {
  grid-area: num;
  font-family: var(--font-mono);
  font-size: 15px;
  letter-spacing: 0.08em;
  color: var(--gold-400);
}

.page-home .idx__name {
  grid-area: name;
  font-family: var(--font-heading);
  font-weight: 700;
  font-size: 18px;
  color: var(--text-primary);
}

.page-home .idx__desc {
  grid-area: desc;
  font-size: 13px;
  line-height: 1.7;
  color: var(--text-secondary);
}

.page-home .idx__arrow {
  display: none;
  font-family: var(--font-mono);
  color: var(--cyan-400);
}

/* ===== 版本状态条 ===== */
.page-home .vbar {
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: 18px 20px;
}

.page-home .vbar__item {
  display: flex;
  flex-direction: column;
  gap: 6px;
  padding-left: 14px;
  border-left: 2px solid var(--cyan-400);
}

.page-home .vbar__k {
  font-family: var(--font-mono);
  font-size: 11px;
  letter-spacing: 0.1em;
  color: var(--text-secondary);
}

.page-home .vbar__v {
  font-family: var(--font-heading);
  font-weight: 700;
  font-size: clamp(20px, 2.2vw, 26px);
  color: var(--text-primary);
}

/* ===== 服务范围 ===== */
.page-home .reach {
  display: grid;
  gap: clamp(28px, 4vw, 48px);
}

.page-home .reach__lead {
  margin: 20px 0 0;
  max-width: 52ch;
  font-size: 16px;
  line-height: 1.85;
  color: var(--text-secondary);
}

.page-home .reach__facts {
  margin: 28px 0 30px;
  display: grid;
  gap: 14px;
}

.page-home .reach__fact {
  display: grid;
  gap: 4px;
  padding-left: 14px;
  border-left: 1px solid var(--line);
}

.page-home .reach__fact dt {
  font-family: var(--font-mono);
  font-size: 11px;
  letter-spacing: 0.1em;
  color: var(--gold-400);
}

.page-home .reach__fact dd {
  margin: 0;
  font-size: 15px;
  line-height: 1.7;
  color: var(--text-primary);
}

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

.page-home .reach__media img {
  display: block;
  width: 100%;
  height: auto;
  aspect-ratio: 2 / 1;
  object-fit: cover;
  border-radius: var(--radius-md);
}

/* ===== 内容摘录 ===== */
.page-home .notes {
  display: grid;
  gap: clamp(28px, 4vw, 44px);
}

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

.page-home .notes__media img {
  display: block;
  width: 100%;
  height: auto;
  aspect-ratio: 4 / 3;
  object-fit: cover;
  border-radius: var(--radius-md);
}

.page-home .notes__list {
  list-style: none;
  margin: 28px 0 0;
  padding: 0;
  border-top: 1px solid var(--line);
}

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

.page-home .notes__link {
  display: grid;
  gap: 6px;
  padding: 20px 0;
  color: inherit;
  text-decoration: none;
  transition: transform 0.28s var(--ease);
}

.page-home .notes__link:hover,
.page-home .notes__link:focus-visible {
  transform: translateX(4px);
}

.page-home .notes__tag {
  font-family: var(--font-mono);
  font-size: 11px;
  letter-spacing: 0.08em;
  color: var(--coral-500);
}

.page-home .notes__name {
  font-family: var(--font-heading);
  font-weight: 700;
  font-size: 18px;
  line-height: 1.4;
  color: var(--text-primary);
}

.page-home .notes__link:hover .notes__name,
.page-home .notes__link:focus-visible .notes__name {
  color: var(--cyan-400);
}

.page-home .notes__desc {
  font-size: 14px;
  line-height: 1.75;
  color: var(--text-secondary);
}

.page-home .notes__foot {
  margin: 22px 0 0;
  font-size: 14px;
}

.page-home .notes__foot a {
  color: var(--cyan-400);
  text-decoration: none;
  border-bottom: 1px solid var(--ink-700);
  padding-bottom: 2px;
}

.page-home .notes__foot a:hover,
.page-home .notes__foot a:focus-visible {
  border-color: var(--cyan-400);
}

/* ===== 断点 ===== */
@media (min-width: 640px) {
  .page-home .vbar {
    grid-template-columns: repeat(4, minmax(0, 1fr));
  }

  .page-home .idx__link {
    grid-template-columns: 64px minmax(0, 1fr);
  }

  .page-home .idx__name {
    font-size: 20px;
  }
}

@media (min-width: 960px) {
  .page-home .hero__inner {
    grid-template-columns: repeat(12, minmax(0, 1fr));
    column-gap: clamp(24px, 3vw, 48px);
    align-items: start;
  }

  .page-home .hero__copy {
    grid-column: 1 / 8;
    padding-top: 28px;
  }

  .page-home .hero__cards {
    grid-column: 8 / 13;
    gap: 14px;
  }

  .page-home .doc-card:nth-child(2) {
    transform: translateX(26px);
    width: calc(100% - 26px);
  }

  .page-home .doc-card:nth-child(3) {
    transform: translateX(52px);
    width: calc(100% - 52px);
  }

  .page-home .doc-card:nth-child(2):hover,
  .page-home .doc-card:nth-child(3):hover {
    transform: translate(26px, -4px);
  }

  .page-home .doc-card:nth-child(3):hover {
    transform: translate(52px, -4px);
  }

  .page-home .duo {
    grid-template-columns: 7fr 5fr;
    gap: 24px;
  }

  .page-home .duo__card + .duo__card {
    margin-top: 44px;
  }

  .page-home .idx__link {
    grid-template-columns: 88px minmax(0, 1fr) minmax(0, 320px) 28px;
    grid-template-areas: "num name desc arrow";
    align-items: center;
    gap: 20px;
    padding: 22px 18px 22px 0;
  }

  .page-home .idx__link:hover .idx__arrow,
  .page-home .idx__link:focus-visible .idx__arrow {
    transform: translateX(4px);
  }

  .page-home .idx__arrow {
    display: block;
    grid-area: arrow;
    text-align: right;
    transition: transform 0.28s var(--ease);
  }

  .page-home .idx__desc {
    font-size: 14px;
    text-align: right;
    transition: color 0.28s var(--ease);
  }

  .page-home .idx__link:hover .idx__desc,
  .page-home .idx__link:focus-visible .idx__desc {
    color: var(--cyan-400);
  }

  .page-home .reach {
    grid-template-columns: 5fr 7fr;
    align-items: center;
  }

  .page-home .notes {
    grid-template-columns: 5fr 7fr;
    align-items: start;
  }

  .page-home .notes__media {
    position: sticky;
    top: 96px;
  }
}

@media (min-width: 1280px) {
  .page-home .reach {
    grid-template-columns: 4fr 8fr;
  }

  .page-home .notes {
    grid-template-columns: 4fr 8fr;
  }
}

@media (prefers-reduced-motion: reduce) {
  .page-home .doc-card,
  .page-home .duo__card,
  .page-home .idx__link,
  .page-home .notes__link,
  .page-home [data-reveal] {
    transition: none;
  }

  .page-home .doc-card:hover,
  .page-home .duo__card:hover,
  .page-home .notes__link:hover {
    transform: none;
  }
}

.