.page-home {
  --home-tint: color-mix(in srgb, var(--color-contrast-surface) 88%, transparent);
}

/* ---------- 首屏分屏 ---------- */

.page-home .hero-home__grid {
  display: grid;
  grid-template-columns: minmax(0, 1fr);
  gap: var(--space-8);
  align-items: center;
}

.page-home .hero-home__eyebrow {
  color: var(--color-contrast-ink);
  opacity: 0.6;
  margin: 0 0 var(--space-4);
}

.page-home .hero-home__title {
  margin: 0;
  color: var(--color-contrast-ink);
  font-size: var(--text-display);
  font-family: var(--font-heading);
  font-weight: var(--weight-heading);
  line-height: 1.02;
  letter-spacing: var(--tracking-heading);
}

.page-home .hero-home__lede {
  margin: var(--space-6) 0 0;
  max-width: var(--measure);
  color: var(--color-contrast-ink);
  opacity: 0.82;
}

.page-home .hero-home__actions {
  display: flex;
  flex-wrap: wrap;
  gap: var(--space-4) var(--space-6);
  margin-top: var(--space-8);
}

.page-home .hero-home__actions .cta {
  color: var(--color-contrast-ink);
}

.page-home .hero-home__actions .cta:hover,
.page-home .hero-home__actions .cta:focus-visible {
  color: var(--color-contrast-accent);
}

.page-home .hero-home__visual {
  position: relative;
  isolation: isolate;
  overflow: hidden;
  aspect-ratio: 4 / 3;
  background: var(--color-contrast-surface);
}

.page-home .hero-home__bg {
  position: absolute;
  inset: 0;
  z-index: 0;
  width: 100%;
  height: 100%;
  object-fit: cover;
  opacity: 0.34;
  filter: grayscale(1);
}

.page-home .hero-home__scrim {
  position: absolute;
  inset: 0;
  z-index: 1;
  background: linear-gradient(
    180deg,
    color-mix(in srgb, var(--color-contrast-surface) 52%, transparent) 0%,
    color-mix(in srgb, var(--color-contrast-surface) 82%, transparent) 58%,
    var(--color-contrast-surface) 100%
  );
}

.page-home .hero-home__emblem {
  position: absolute;
  z-index: 2;
  left: 50%;
  top: 50%;
  transform: translate(-50%, -50%);
  width: 76%;
  height: auto;
  color: var(--color-contrast-ink);
}

.page-home .emblem-arc {
  fill: none;
  stroke: currentColor;
  stroke-width: 1;
  opacity: 0.34;
}

.page-home .emblem-wing {
  fill: currentColor;
  opacity: 0.12;
}

.page-home .emblem-wing--mid {
  opacity: 0.2;
}

.page-home .emblem-core {
  fill: currentColor;
  opacity: 0.72;
}

.page-home .hero-figures {
  list-style: none;
  margin: var(--section-y) 0 0;
  padding: 0;
  display: grid;
  grid-template-columns: minmax(0, 1fr);
  gap: var(--space-6);
}

.page-home .hero-figures .figure {
  display: block;
  font-family: var(--font-heading);
  font-size: var(--text-2xl);
  font-weight: var(--weight-heading);
  line-height: 1.04;
  letter-spacing: var(--tracking-heading);
  color: var(--color-contrast-ink);
}

.page-home .hero-figures .figure-label {
  display: block;
  margin-top: var(--space-2);
  max-width: 30ch;
  font-size: var(--text-sm);
  line-height: 1.6;
  color: var(--color-contrast-ink);
  opacity: 0.6;
}

/* ---------- 页内索引条 ---------- */

.page-home .home-toc .toc {
  display: flex;
  flex-wrap: wrap;
  align-items: baseline;
  gap: var(--space-2) var(--space-6);
}

.page-home .home-toc .toc a {
  font-size: var(--text-sm);
  color: var(--color-ink-soft);
  text-decoration: none;
}

.page-home .home-toc .toc a:hover,
.page-home .home-toc .toc a:focus-visible {
  color: var(--color-accent);
  text-decoration: underline;
}

/* ---------- 五档档位 ---------- */

.page-home .tiers-head {
  display: grid;
  grid-template-columns: minmax(0, 1fr);
  gap: var(--space-6);
  margin-bottom: var(--space-8);
}

.page-home .tiers-head__lede {
  margin: var(--space-3) 0 0;
  max-width: var(--measure);
  font-size: var(--text-base);
  color: var(--color-ink-soft);
}

.page-home .tiers-filter {
  display: flex;
  flex-direction: column;
  gap: var(--space-3);
}

.page-home .tiers-filter .filter-bar {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  gap: var(--space-2);
}

.page-home .tier {
  display: grid;
  grid-template-columns: minmax(0, 1fr);
  gap: var(--space-3);
  padding-block: var(--space-6);
  transition: opacity 180ms ease;
}

.page-home .tier__head {
  display: flex;
  align-items: baseline;
  gap: var(--space-2);
}

.page-home .tier__no {
  font-family: var(--font-mono);
  font-size: var(--text-xs);
  letter-spacing: 0.14em;
  color: var(--color-ink-muted);
}

.page-home .tier__name {
  margin: 0;
  font-family: var(--font-heading);
  font-size: var(--text-lg);
  font-weight: var(--weight-heading);
  color: var(--color-ink);
}

.page-home .tier__capacity {
  margin: 0;
  font-family: var(--font-heading);
  font-size: var(--text-3xl);
  font-weight: var(--weight-heading);
  line-height: 1.02;
  letter-spacing: var(--tracking-heading);
  color: var(--color-ink);
}

.page-home .tier__capacity span {
  display: block;
  margin-top: var(--space-1);
  font-family: var(--font-body);
  font-size: var(--text-xs);
  font-weight: var(--weight-body);
  letter-spacing: 0.14em;
  color: var(--color-ink-muted);
}

.page-home .tier__specs {
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: var(--space-3) var(--space-4);
  margin: var(--space-2) 0 0;
}

.page-home .tier__spec dt {
  font-size: var(--text-xs);
  letter-spacing: 0.1em;
  color: var(--color-ink-muted);
}

.page-home .tier__spec dd {
  margin: var(--space-1) 0 0;
  font-size: var(--text-sm);
  color: var(--color-ink);
}

@media (hover: hover) and (min-width: 800px) {
  .page-home .tiers:hover .tier:not(:hover) {
    opacity: 0.42;
  }
}

/* ---------- 图片背景带 ---------- */

.page-home .band {
  position: relative;
  isolation: isolate;
  overflow: hidden;
}

.page-home .band__img {
  position: absolute;
  inset: 0;
  z-index: -2;
  width: 100%;
  height: 100%;
  object-fit: cover;
  opacity: 0.5;
  filter: grayscale(1);
}

.page-home .band__scrim {
  position: absolute;
  inset: 0;
  z-index: -1;
  background: var(--overlay-scrim);
}

/* ---------- 核验五步 ---------- */

.page-home .flow__lede {
  margin: var(--space-6) 0 0;
  max-width: var(--measure);
  color: var(--color-contrast-ink);
  opacity: 0.78;
}

.page-home .flow {
  list-style: none;
  margin: var(--space-8) 0 0;
  padding: 0;
}

.page-home .flow__step {
  display: grid;
  grid-template-columns: minmax(0, 1fr);
  gap: var(--space-2);
  padding-block: var(--space-6);
}

.page-home .flow__no {
  display: block;
  font-family: var(--font-heading);
  font-size: var(--text-2xl);
  font-weight: var(--weight-heading);
  line-height: 0.92;
  color: var(--color-contrast-ink);
  opacity: 0.3;
}

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

.page-home .flow__body .sub-title {
  margin: 0 0 var(--space-2);
  color: var(--color-contrast-ink);
}

.page-home .flow__body p {
  margin: 0;
  max-width: var(--measure);
  color: var(--color-contrast-ink);
  opacity: 0.78;
}

/* ---------- 条款与安装 ---------- */

.page-home .terms {
  display: grid;
  grid-template-columns: minmax(0, 1fr);
  gap: var(--space-8);
  margin-top: var(--space-8);
}

.page-home .term {
  max-width: 46ch;
}

.page-home .term .sub-title {
  margin: 0 0 var(--space-3);
}

.page-home .term p {
  margin: 0;
  color: var(--color-ink);
}

.page-home #terms .note {
  margin-top: var(--space-8);
  max-width: var(--measure);
}

/* ---------- 资源下载 ---------- */

.page-home .resources {
  display: grid;
  grid-template-columns: minmax(0, 1fr);
  gap: var(--space-8);
  margin-top: var(--space-8);
}

.page-home .res-media {
  position: relative;
  isolation: isolate;
  overflow: hidden;
  display: flex;
  align-items: flex-end;
  aspect-ratio: 14 / 9;
}

.page-home .res-media img {
  position: absolute;
  inset: 0;
  z-index: -2;
  width: 100%;
  height: 100%;
  object-fit: cover;
  filter: grayscale(1);
}

.page-home .res-media__scrim {
  position: absolute;
  inset: 0;
  z-index: -1;
  background: var(--overlay-scrim);
}

.page-home .res-media__text {
  position: relative;
  margin: 0;
  padding: var(--space-4);
  font-size: var(--text-sm);
  line-height: 1.65;
  color: var(--color-contrast-ink);
}

.page-home .res-group {
  margin-bottom: var(--space-8);
}

.page-home .res-group:last-child {
  margin-bottom: 0;
}

.page-home .res-group__name {
  margin: 0 0 var(--space-3);
  font-family: var(--font-heading);
  font-size: var(--text-lg);
  font-weight: var(--weight-heading);
  color: var(--color-ink);
}

.page-home .res-group ul {
  list-style: none;
  margin: 0;
  padding: 0;
}

.page-home .res-item {
  display: flex;
  flex-wrap: wrap;
  align-items: baseline;
  justify-content: space-between;
  gap: var(--space-1) var(--space-4);
  padding-block: var(--space-2);
}

.page-home .res-item__name {
  font-size: var(--text-base);
  color: var(--color-ink);
}

.page-home .res-item__meta {
  font-size: var(--text-xs);
  letter-spacing: 0.08em;
  color: var(--color-ink-muted);
}

.page-home #resources .note {
  margin-top: var(--space-8);
  max-width: var(--measure);
}

/* ---------- 栏目导览 ---------- */

.page-home .guide {
  list-style: none;
  margin: var(--space-8) 0 0;
  padding: 0;
}

.page-home .guide__item {
  display: grid;
  grid-template-columns: minmax(0, 1fr);
  gap: var(--space-1);
  padding-block: var(--space-4);
}

.page-home .guide__no {
  font-family: var(--font-mono);
  font-size: var(--text-xs);
  letter-spacing: 0.14em;
  color: var(--color-ink-muted);
}

.page-home .guide__link {
  font-family: var(--font-heading);
  font-size: var(--text-lg);
  font-weight: var(--weight-heading);
  color: var(--color-ink);
  text-decoration: none;
}

.page-home .guide__link:hover,
.page-home .guide__link:focus-visible {
  color: var(--color-accent);
  text-decoration: underline;
}

.page-home .guide__desc {
  margin: 0;
  font-size: var(--text-sm);
  line-height: 1.65;
  color: var(--color-ink-soft);
}

.page-home .guide__foot {
  margin: var(--space-8) 0 0;
  font-size: var(--text-sm);
  color: var(--color-ink-muted);
}

/* ---------- 收束行动出口 ---------- */

.page-home .closing__inner {
  max-width: var(--measure);
}

.page-home .closing__inner .section-title {
  color: var(--color-contrast-ink);
}

.page-home .closing__inner .lede {
  margin: var(--space-6) 0 0;
  color: var(--color-contrast-ink);
  opacity: 0.8;
}

.page-home .closing__actions {
  margin-top: var(--space-8);
}

.page-home .closing__actions .cta {
  color: var(--color-contrast-ink);
}

.page-home .closing__actions .cta:hover,
.page-home .closing__actions .cta:focus-visible {
  color: var(--color-contrast-accent);
}

.page-home .closing__contact {
  display: grid;
  grid-template-columns: minmax(0, 1fr);
  gap: var(--space-4);
  margin: var(--space-8) 0 0;
}

.page-home .closing__contact dt {
  font-size: var(--text-xs);
  letter-spacing: 0.12em;
  color: var(--color-contrast-ink);
  opacity: 0.55;
}

.page-home .closing__contact dd {
  margin: var(--space-1) 0 0;
  font-size: var(--text-sm);
  line-height: 1.6;
  color: var(--color-contrast-ink);
}

/* ---------- 响应式 ---------- */

@media (min-width: 720px) {
  .page-home .hero-figures {
    grid-template-columns: repeat(3, minmax(0, 1fr));
    gap: var(--space-4);
  }

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

  .page-home .flow__step {
    grid-template-columns: minmax(0, 0.6fr) minmax(0, 3fr);
    column-gap: var(--space-6);
    align-items: start;
  }

  .page-home .flow__no {
    font-size: var(--text-3xl);
  }
}

@media (min-width: 800px) {
  .page-home .tier {
    grid-template-columns: minmax(0, 1fr) minmax(0, 4fr);
    column-gap: var(--space-8);
    align-items: start;
  }

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

  .page-home .tier__capacity,
  .page-home .tier__specs {
    grid-column: 2;
  }

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

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

  .page-home .guide__item {
    grid-template-columns: minmax(0, 0.4fr) minmax(0, 2fr) minmax(0, 4fr);
    column-gap: var(--space-6);
    align-items: baseline;
  }

  .page-home .guide__no,
  .page-home .guide__link,
  .page-home .guide__desc {
    grid-row: 1;
  }
}

@media (min-width: 900px) {
  .page-home .hero-home__grid {
    grid-template-columns: minmax(0, 7fr) minmax(0, 5fr);
    gap: var(--space-8);
  }

  .page-home .hero-home__visual {
    aspect-ratio: 3 / 4;
  }

  .page-home .tiers-head {
    grid-template-columns: minmax(0, 6fr) minmax(0, 5fr);
    align-items: end;
    column-gap: var(--space-8);
  }

  .page-home .resources {
    grid-template-columns: minmax(0, 4fr) minmax(0, 7fr);
    column-gap: var(--space-8);
    align-items: start;
  }
}

@media (prefers-reduced-motion: reduce) {
  .page-home .tier {
    transition: none;
  }
}