.page-home {
  --home-hero-gap: var(--space-4);
  --home-tick-gap: 40px;
}

/* ---------- 首屏封面 ---------- */

.page-home .home-hero {
  position: relative;
  padding-top: var(--space-8);
  text-align: center;
  background: var(--color-surface);
}

.page-home .home-hero-shell {
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: var(--space-3);
  padding-bottom: var(--space-6);
}

.page-home .home-hero-kicker {
  margin: 0;
  font-family: var(--font-mono);
  font-size: var(--text-xs);
  letter-spacing: 0.24em;
  color: var(--color-primary);
  text-transform: uppercase;
}

.page-home .home-hero-title {
  margin: 0;
  font-size: var(--text-display);
  line-height: var(--leading-heading);
  letter-spacing: var(--tracking-heading);
  font-weight: var(--weight-heading);
  color: var(--color-ink);
  max-width: 18ch;
}

.page-home .home-hero-lede {
  margin: 0;
  max-width: 46ch;
  font-size: var(--text-lg);
  line-height: var(--leading-body);
  color: var(--color-ink);
}

.page-home .home-hero-sub {
  margin: 0;
  max-width: 56ch;
  font-size: var(--text-base);
  line-height: var(--leading-body);
  color: var(--color-ink-soft);
}

.page-home .home-hero-stats {
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: var(--space-3);
  width: 100%;
  max-width: 760px;
  margin: var(--space-2) 0 0;
  padding: var(--space-3) 0 0;
  list-style: none;
  border-top: var(--border-thin) solid var(--color-line);
}

.page-home .home-stat {
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: var(--space-1);
  padding: var(--space-2);
  border-left: var(--border-thin) solid var(--color-line);
}

.page-home .home-stat:first-child,
.page-home .home-stat:nth-child(3) {
  border-left: 0;
}

.page-home .home-stat-value {
  font-family: var(--font-mono);
  font-size: var(--text-figure);
  line-height: 1;
  color: var(--color-primary);
  font-weight: var(--weight-heading);
}

.page-home .home-stat-label {
  font-size: var(--text-sm);
  color: var(--color-ink-soft);
}

.page-home .home-hero-figure {
  margin: 0;
  width: 100%;
  overflow: hidden;
  border-top: var(--border-thick) solid var(--color-primary);
  border-bottom: var(--border-thin) solid var(--color-line);
  background: var(--color-surface-deep);
}

.page-home .home-hero-figure img {
  display: block;
  width: 100%;
  height: clamp(180px, 34vw, 420px);
  object-fit: cover;
  object-position: center;
}

.page-home .home-hero-foot {
  height: 14px;
  border-top: var(--border-thin) solid var(--color-primary);
  border-bottom: var(--border-thin) solid var(--color-primary);
  background-image: repeating-linear-gradient(
    90deg,
    var(--color-primary) 0,
    var(--color-primary) 1px,
    transparent 1px,
    transparent var(--home-tick-gap)
  );
  background-position: center top;
  background-repeat: repeat-x;
  background-size: auto 8px;
  opacity: 0.55;
}

/* ---------- 四大类参数 ---------- */

.page-home .home-params {
  background: var(--color-surface);
}

.page-home .home-params-layout {
  display: grid;
  grid-template-columns: 1fr;
  gap: var(--space-6);
}

.page-home .home-param-list {
  list-style: none;
  margin: 0;
  padding: 0;
  display: grid;
  gap: var(--space-4);
}

.page-home .home-param {
  padding-left: var(--space-3);
  border-left: var(--border-thick) solid var(--color-primary);
}

.page-home .home-param-name {
  margin: 0 0 var(--space-1);
  font-size: var(--text-xl);
  line-height: var(--leading-heading);
  font-weight: var(--weight-heading);
  color: var(--color-ink);
}

.page-home .home-param-desc {
  margin: 0 0 var(--space-2);
  font-size: var(--text-base);
  line-height: var(--leading-body);
  color: var(--color-ink);
  max-width: 46ch;
}

.page-home .home-param .link-more {
  font-size: var(--text-sm);
}

.page-home .home-params-figure {
  margin: 0;
  display: flex;
  flex-direction: column;
  gap: var(--space-2);
}

.page-home .home-params-figure img {
  display: block;
  width: 100%;
  height: auto;
  border: var(--border-thick) double var(--color-line);
  background: var(--color-surface-alt);
}

.page-home .home-figure-caption {
  font-size: var(--text-sm);
  line-height: var(--leading-body);
  color: var(--color-ink-soft);
  padding-left: var(--space-2);
  border-left: var(--border-thin) solid var(--color-line);
}

/* ---------- 季度刻度带 ---------- */

.page-home .home-scales {
  position: relative;
  overflow: hidden;
  background: var(--color-surface-alt);
}

.page-home .home-scales-lede {
  margin: var(--space-3) auto 0;
  max-width: 60ch;
  font-size: var(--text-base);
  line-height: var(--leading-body);
  color: var(--color-ink-soft);
}

.page-home .home-scale-track {
  list-style: none;
  margin: var(--space-6) 0 0;
  padding: var(--space-3) 0 0;
  display: grid;
  grid-template-columns: repeat(4, minmax(0, 1fr));
  gap: var(--space-3) var(--space-1);
  border-top: var(--border-thin) solid var(--color-line);
}

.page-home .home-scale {
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: var(--space-1);
  padding-bottom: var(--space-2);
  position: relative;
}

.page-home .home-scale::before {
  content: "";
  position: absolute;
  top: 5px;
  left: 0;
  right: 0;
  height: var(--border-thin);
  background: var(--color-line);
}

.page-home .home-scale:first-child::before {
  left: 50%;
}

.page-home .home-scale:last-child::before {
  right: 50%;
}

.page-home .home-scale-dot {
  position: relative;
  z-index: 1;
  width: 11px;
  height: 11px;
  border-radius: var(--radius-pill);
  background: var(--color-surface);
  border: var(--border-thin) solid var(--color-accent);
  box-shadow: none;
}

.page-home .home-scale-label {
  font-family: var(--font-mono);
  font-size: var(--text-xs);
  color: var(--color-ink-muted);
  white-space: nowrap;
}

.page-home .home-scale--current .home-scale-dot {
  background: var(--color-primary);
  border: var(--border-thick) solid var(--color-accent);
  width: 13px;
  height: 13px;
}

.page-home .home-scale--current .home-scale-label {
  color: var(--color-primary);
  font-weight: var(--weight-heading);
}

.page-home .home-scale--current {
  background: var(--color-highlight);
}

.page-home .home-scales-foot {
  display: grid;
  grid-template-columns: 1fr;
  gap: var(--space-3);
  margin-top: var(--space-4);
  padding-top: var(--space-3);
  border-top: var(--border-thin) solid var(--color-line);
}

.page-home .home-scales-note {
  margin: 0;
  font-size: var(--text-sm);
  line-height: var(--leading-body);
  color: var(--color-ink-soft);
  padding-left: var(--space-2);
  border-left: var(--border-thin) solid var(--color-primary);
}

.page-home .home-scales-figure {
  margin: var(--space-6) 0 0;
  overflow: hidden;
  border-top: var(--border-thin) solid var(--color-line);
  border-bottom: var(--border-thin) solid var(--color-line);
}

.page-home .home-scales-figure img {
  display: block;
  width: 100%;
  height: clamp(120px, 22vw, 260px);
  object-fit: cover;
  object-position: center;
  opacity: 0.9;
}

/* ---------- 档位对照条 ---------- */

.page-home .home-compare {
  background: var(--color-surface);
}

.page-home .home-compare-cols {
  display: grid;
  grid-template-columns: 1fr;
  gap: var(--space-6);
}

.page-home .home-compare-col {
  border-top: var(--border-thick) double var(--color-line);
  padding-top: var(--space-3);
}

.page-home .home-compare-heading {
  margin: 0 0 var(--space-3);
  font-size: var(--text-lg);
  line-height: var(--leading-heading);
  font-weight: var(--weight-heading);
  color: var(--color-ink);
}

.page-home .home-ladder-list {
  list-style: none;
  margin: 0;
  padding: 0;
  display: grid;
  gap: var(--space-3);
}

.page-home .home-ladder {
  display: grid;
  gap: var(--space-1);
}

.page-home .home-ladder-top {
  display: flex;
  align-items: baseline;
  justify-content: space-between;
  gap: var(--space-2);
}

.page-home .home-ladder-name {
  font-size: var(--text-base);
  color: var(--color-ink);
  font-weight: var(--weight-heading);
}

.page-home .home-ladder-bar {
  display: block;
  position: relative;
  height: 8px;
  background: var(--color-surface-deep);
  border-left: var(--border-thin) solid var(--color-line);
  border-right: var(--border-thin) solid var(--color-line);
}

.page-home .home-ladder-bar::after {
  content: "";
  position: absolute;
  inset: 0 auto 0 0;
  width: var(--fill, 50%);
  background: linear-gradient(
    90deg,
    var(--color-accent) 0%,
    var(--color-primary) 100%
  );
}

.page-home .home-ladder-note {
  font-size: var(--text-sm);
  line-height: var(--leading-body);
  color: var(--color-ink-soft);
}

.page-home .home-compare .callout {
  margin-top: var(--space-6);
}

.page-home .home-compare .callout p {
  margin: 0 0 var(--space-2);
  font-size: var(--text-base);
  line-height: var(--leading-body);
  color: var(--color-ink);
}

/* ---------- 兑换与版本双栏 ---------- */

.page-home .home-pair {
  background: var(--color-surface-deep);
}

.page-home .home-pair-grid {
  display: grid;
  grid-template-columns: 1fr;
  gap: var(--space-4);
}

.page-home .home-pair-item {
  background: var(--color-surface);
  border: var(--border-thick) double var(--color-line);
  padding: var(--space-4);
  display: flex;
  flex-direction: column;
  gap: var(--space-2);
}

.page-home .home-pair-name {
  margin: 0;
  font-size: var(--text-xl);
  line-height: var(--leading-heading);
  font-weight: var(--weight-heading);
  color: var(--color-ink);
  padding-left: var(--space-2);
  border-left: var(--border-thick) solid var(--color-primary);
}

.page-home .home-pair-item p {
  margin: 0;
  font-size: var(--text-base);
  line-height: var(--leading-body);
  color: var(--color-ink);
  max-width: var(--measure);
}

.page-home .home-pair-item .link-more {
  margin-top: auto;
  font-size: var(--text-sm);
}

/* ---------- 反色收束区 ---------- */

.page-home .home-band-figure {
  margin: 0;
  overflow: hidden;
  background: var(--color-contrast-surface);
}

.page-home .home-band-figure img {
  display: block;
  width: 100%;
  height: clamp(140px, 26vw, 300px);
  object-fit: cover;
  object-position: center;
}

.page-home .home-exit {
  padding-top: var(--section-y);
  padding-bottom: var(--section-y);
}

.page-home .home-exit-head .section-kicker {
  color: var(--color-contrast-accent);
}

.page-home .home-exit-grid {
  display: grid;
  grid-template-columns: 1fr;
  gap: var(--space-3);
}

.page-home .home-exit-item {
  display: flex;
  flex-direction: column;
  gap: var(--space-1);
  padding: var(--space-3);
  border: var(--border-thin) solid var(--color-contrast-line);
  color: var(--color-contrast-ink);
  text-decoration: none;
  transition: border-color 200ms ease, background-color 200ms ease;
}

.page-home .home-exit-item:hover,
.page-home .home-exit-item:focus-visible {
  border-color: var(--color-contrast-accent);
  background: rgba(255, 255, 255, 0.04);
}

.page-home .home-exit-name {
  font-size: var(--text-lg);
  font-weight: var(--weight-heading);
  line-height: var(--leading-heading);
}

.page-home .home-exit-desc {
  font-size: var(--text-sm);
  line-height: var(--leading-body);
  color: var(--color-contrast-line);
}

.page-home .home-exit-contact {
  margin-top: var(--space-6);
  padding-top: var(--space-4);
  border-top: var(--border-thick) double var(--color-contrast-line);
  display: grid;
  grid-template-columns: 1fr;
  gap: var(--space-4);
}

.page-home .home-exit-contact-title {
  margin: 0 0 var(--space-2);
  font-size: var(--text-xl);
  line-height: var(--leading-heading);
  font-weight: var(--weight-heading);
  color: var(--color-contrast-ink);
}

.page-home .home-exit-contact-text p {
  margin: 0;
  font-size: var(--text-base);
  line-height: var(--leading-body);
  color: var(--color-contrast-ink);
  max-width: var(--measure);
}

.page-home .home-exit-contact-actions {
  display: flex;
  flex-wrap: wrap;
  gap: var(--space-2);
  align-items: flex-start;
}

/* ---------- 响应式 ---------- */

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

  .page-home .home-stat:nth-child(3) {
    border-left: var(--border-thin) solid var(--color-line);
  }

  .page-home .home-scale-track {
    grid-template-columns: repeat(8, minmax(0, 1fr));
    gap: var(--space-3) var(--space-2);
  }

  .page-home .home-scales-foot {
    grid-template-columns: 1fr 1fr;
    gap: var(--space-4);
  }

  .page-home .home-compare-cols {
    grid-template-columns: 1fr 1fr;
    gap: var(--space-6);
  }

  .page-home .home-pair-grid {
    grid-template-columns: 5fr 6fr;
    align-items: stretch;
  }

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

  .page-home .home-exit-contact {
    grid-template-columns: 7fr 4fr;
    align-items: start;
  }
}

@media (min-width: 980px) {
  .page-home .home-params-layout {
    grid-template-columns: 7fr 1fr 4fr;
    gap: 0;
    align-items: start;
  }

  .page-home .home-params-main {
    grid-column: 1;
  }

  .page-home .home-params-figure {
    grid-column: 3;
    position: sticky;
    top: var(--space-6);
  }

  .page-home .home-param-desc {
    max-width: 44ch;
  }

  .page-home .home-exit-grid {
    grid-template-columns: 1.2fr 1fr 1.1fr 0.95fr;
    align-items: stretch;
  }

  .page-home .home-exit-item:nth-child(2) {
    transform: translateY(var(--space-3));
  }

  .page-home .home-exit-item:nth-child(4) {
    transform: translateY(calc(var(--space-3) * -1));
  }

  .page-home .home-scale-track {
    grid-template-columns: repeat(16, minmax(0, 1fr));
    gap: var(--space-2) 0;
  }

  .page-home .home-hero-foot {
    --home-tick-gap: 72px;
  }
}

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

  .page-home .home-exit-item:nth-child(2),
  .page-home .home-exit-item:nth-child(4) {
    transform: none;
  }
}

.page-home {
  --fill: currentColor;
}