.page-home {
  --home-gap: clamp(20px, 4vw, 44px);
  --home-rail: 44px;
  --home-ink-soft: rgba(11, 21, 32, 0.68);
  --home-line-soft: rgba(11, 21, 32, 0.16);
  display: block;
  overflow-x: hidden;
  background: var(--ink);
  color: var(--paper);
}

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

/* ---------- 封面 ---------- */
.page-home__cover {
  border-bottom: var(--frame);
}

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

.page-home__rail {
  display: none;
}

.page-home__h1 {
  margin: 14px 0 0;
  font-family: var(--font-display);
  font-weight: 900;
  font-size: clamp(40px, 10vw, 94px);
  line-height: 0.92;
  letter-spacing: -0.03em;
}

.page-home__h1-brand {
  display: block;
  color: var(--paper);
}

.page-home__h1-line {
  display: block;
  color: var(--yellow);
}

.page-home__slogan {
  margin: 16px 0 0;
  font-size: 12px;
  letter-spacing: 0.32em;
  color: var(--cyan);
}

.page-home__lede {
  max-width: 34em;
  margin-top: 18px;
}

.page-home__index {
  display: grid;
  gap: 12px;
  margin-top: clamp(26px, 4vw, 42px);
}

.page-home__index-item {
  display: grid;
  grid-template-columns: auto minmax(0, 1fr) auto;
  align-items: center;
  gap: 14px;
  padding: 16px 18px;
  border: 2px solid var(--line);
  border-left-width: 6px;
  background: var(--panel);
  color: var(--paper);
  text-decoration: none;
  box-shadow: var(--hard-shadow-sm);
  transition: transform var(--step-fast), box-shadow var(--step-fast),
    border-color var(--step-fast), background-color var(--step-fast);
}

.page-home__index-item:nth-child(1) {
  border-left-color: var(--red);
}

.page-home__index-item:nth-child(2) {
  border-left-color: var(--yellow);
}

.page-home__index-item:nth-child(3) {
  border-left-color: var(--cyan);
}

.page-home__index-item:hover,
.page-home__index-item:focus-visible {
  transform: translate(-2px, -2px);
  box-shadow: 8px 8px 0 var(--ink-deep);
  border-color: var(--cyan);
  background: var(--ink);
}

.page-home__index-idx {
  font-size: 12px;
  color: var(--grey);
}

.page-home__index-body {
  display: grid;
  gap: 4px;
}

.page-home__index-name {
  font-size: 18px;
  font-weight: 800;
  letter-spacing: 0.02em;
}

.page-home__index-desc {
  font-size: 13px;
  line-height: 1.6;
  color: var(--grey);
}

.page-home__index-go {
  font-family: var(--font-mono);
  color: var(--cyan);
}

.page-home__cover-figure {
  position: relative;
  margin: 0;
}

.page-home__cover-figure img {
  width: 100%;
  height: 100%;
  object-fit: cover;
}

.page-home__cover-note {
  position: absolute;
  top: 14px;
  right: 14px;
  writing-mode: vertical-rl;
  padding: 10px 5px;
  background: var(--yellow);
  color: var(--ink-deep);
  font-size: 11px;
  letter-spacing: 0.2em;
}

/* ---------- 内容指标带 ---------- */
.page-home__metrics {
  position: relative;
  overflow: hidden;
  border-bottom: var(--frame);
  clip-path: polygon(0 0, 100% 0, 100% calc(100% - 30px), 0 100%);
  padding-bottom: clamp(64px, 9vw, 104px);
}

.page-home__metrics-bg {
  position: absolute;
  inset: 0;
  width: 100%;
  height: 100%;
  object-fit: cover;
  opacity: 0.18;
  pointer-events: none;
}

.page-home__metrics-inner {
  position: relative;
  z-index: 1;
}

.page-home__metrics-grid {
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: 12px;
  margin-top: clamp(20px, 3vw, 32px);
}

.page-home__metrics-grid .metric {
  padding: 16px 14px;
  background: rgba(5, 8, 13, 0.82);
}

.page-home__metrics-grid .metric__value {
  display: block;
  font-family: var(--font-mono);
  font-size: clamp(26px, 5vw, 40px);
  line-height: 1.05;
  color: var(--paper);
}

.page-home__metrics-grid .metric__label {
  display: block;
  margin-top: 6px;
  font-size: 12px;
  letter-spacing: 0.08em;
  color: var(--grey);
}

.page-home__metrics-note {
  margin-top: 22px;
  font-size: 12px;
  letter-spacing: 0.1em;
  color: var(--grey);
}

/* ---------- 主客场对照 ---------- */
.page-home__form {
  border-bottom: var(--frame);
}

.page-home__form-grid {
  display: grid;
  gap: var(--home-gap);
}

.page-home__form-copy .prose {
  margin-top: 14px;
}

.page-home__form-copy .btn {
  margin-top: 22px;
}

.page-home__form-table {
  margin-top: 6px;
}

.page-home__form-table .data-table caption {
  caption-side: top;
  padding: 10px 14px;
  text-align: left;
  font-size: 12px;
  letter-spacing: 0.1em;
  color: var(--grey);
  border-bottom: var(--hairline);
}

.page-home .data-table tbody tr {
  transition: transform var(--step-fast), box-shadow var(--step-fast);
}

.page-home .data-table tbody tr:hover,
.page-home .data-table tbody tr:focus-within {
  transform: translate(2px, -2px);
  box-shadow: inset 4px 0 0 var(--cyan), inset 0 0 0 2px var(--cyan);
}

/* ---------- 栏目目录（纸面） ---------- */
.page-home__catalog {
  background: var(--paper);
  color: var(--ink);
  border-bottom: var(--frame);
}

.page-home__catalog .eyebrow,
.page-home__catalog .display-2 {
  color: var(--ink);
}

.page-home__catalog-grid {
  display: grid;
  gap: 30px;
  margin-top: clamp(22px, 4vw, 36px);
}

.page-home__catalog-sub {
  margin: 0 0 8px;
  padding-bottom: 10px;
  border-bottom: 2px solid var(--ink);
  font-size: 13px;
  font-weight: 800;
  letter-spacing: 0.14em;
  color: var(--ink);
}

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

.page-home__catalog-item {
  display: grid;
  grid-template-columns: 38px minmax(0, 1fr);
  gap: 2px 12px;
  padding: 14px 8px 14px 0;
  border-bottom: 1px solid var(--home-line-soft);
  color: inherit;
  text-decoration: none;
  transition: background-color var(--step-fast), transform var(--step-fast);
}

.page-home__catalog-item:hover,
.page-home__catalog-item:focus-visible {
  background: rgba(11, 21, 32, 0.06);
  transform: translateX(3px);
}

.page-home__catalog-idx {
  grid-row: span 2;
  padding-top: 3px;
  font-size: 12px;
  color: var(--red);
}

.page-home__catalog-name {
  font-size: 16px;
  font-weight: 800;
}

.page-home__catalog-desc {
  font-size: 13px;
  line-height: 1.65;
  color: var(--home-ink-soft);
}

/* ---------- 资料下载 ---------- */
.page-home__download {
  border-bottom: var(--frame);
}

.page-home__download-grid {
  display: grid;
  gap: var(--home-gap);
}

.page-home__download-figure img {
  width: 100%;
  height: 100%;
  object-fit: cover;
}

.page-home__download-copy .prose {
  margin-top: 14px;
}

.page-home__folds {
  display: grid;
  gap: 10px;
  margin: 24px 0 26px;
}

.page-home__folds .fold {
  border: 2px solid rgba(198, 207, 216, 0.36);
  background: var(--panel);
  transition: border-color var(--step-fast);
}

.page-home__folds .fold:hover {
  border-color: rgba(198, 207, 216, 0.66);
}

.page-home__folds .fold[open] {
  border-color: var(--cyan);
}

.page-home__folds .fold__summary {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 12px;
  padding: 14px 16px;
  cursor: pointer;
  font-size: 15px;
  font-weight: 700;
  color: var(--paper);
  list-style: none;
}

.page-home__folds .fold__summary::-webkit-details-marker {
  display: none;
}

.page-home__folds .fold__summary::after {
  content: "+";
  font-family: var(--font-mono);
  font-size: 18px;
  color: var(--cyan);
}

.page-home__folds .fold[open] .fold__summary::after {
  content: "–";
}

.page-home__folds .fold__body {
  padding: 0 16px 16px;
}

.page-home__folds .fold[open] .fold__body {
  animation: home-fold-in var(--step-mid) linear;
}

.page-home__folds .fold__body p {
  margin: 0;
  font-size: 14px;
  line-height: 1.8;
  color: var(--grey);
}

@keyframes home-fold-in {
  from {
    opacity: 0;
    transform: translateY(-4px);
  }
  to {
    opacity: 1;
    transform: none;
  }
}

/* ---------- 合作与联系 ---------- */
.page-home__partner-grid {
  display: grid;
  gap: var(--home-gap);
}

.page-home__partner-copy .prose {
  margin-top: 14px;
}

.page-home__partner-list {
  list-style: none;
  margin: 24px 0 0;
  padding: 0;
  display: grid;
  gap: 10px;
}

.page-home__partner-list li {
  position: relative;
  padding-left: 20px;
  font-size: 15px;
  color: var(--paper);
}

.page-home__partner-list li::before {
  content: "▍";
  position: absolute;
  left: 0;
  font-family: var(--font-mono);
}

.page-home__partner-list li:nth-child(1)::before {
  color: var(--red);
}

.page-home__partner-list li:nth-child(2)::before {
  color: var(--yellow);
}

.page-home__partner-list li:nth-child(3)::before {
  color: var(--cyan);
}

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

.page-home__partner-facts {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(140px, 1fr));
  gap: 12px;
  align-content: start;
}

.page-home__fact {
  padding: 18px 16px;
  border: 2px solid var(--line);
  border-left-width: 6px;
  border-left-color: var(--yellow);
  background: var(--panel);
  box-shadow: var(--hard-shadow-sm);
}

.page-home__fact:nth-child(2) {
  border-left-color: var(--red);
}

.page-home__fact:nth-child(3) {
  border-left-color: var(--cyan);
}

.page-home__fact-num {
  display: block;
  font-size: clamp(26px, 4vw, 34px);
  color: var(--paper);
}

.page-home__fact-label {
  display: block;
  margin-top: 6px;
  font-size: 12px;
  letter-spacing: 0.08em;
  color: var(--grey);
}

.page-home__partner-banner {
  margin: 0;
}

.page-home__partner-banner img {
  display: block;
  width: 100%;
  height: auto;
  aspect-ratio: 12 / 7;
  object-fit: cover;
  border-top: var(--frame);
  border-bottom: var(--frame);
  filter: saturate(0.82) contrast(1.06);
}

/* ---------- 响应式 ---------- */
@media (min-width: 720px) {
  .page-home__metrics-grid {
    grid-template-columns: repeat(5, minmax(0, 1fr));
  }
}

@media (min-width: 900px) {
  .page-home__cover-grid {
    grid-template-columns: var(--home-rail) minmax(0, 7fr) minmax(0, 4fr);
    column-gap: clamp(20px, 3vw, 40px);
    align-items: stretch;
  }

  .page-home__rail {
    display: flex;
    align-items: center;
    justify-content: center;
    border-left: 2px solid var(--line);
    border-right: var(--hairline);
    writing-mode: vertical-rl;
    text-orientation: mixed;
  }

  .page-home__rail-text {
    font-size: 11px;
    letter-spacing: 0.34em;
    color: var(--grey);
  }

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

  .page-home__catalog-grid {
    grid-template-columns: repeat(2, minmax(0, 1fr));
    gap: 44px;
  }

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

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

@media (prefers-reduced-motion: reduce) {
  .page-home__index-item,
  .page-home .data-table tbody tr,
  .page-home__catalog-item,
  .page-home__folds .fold {
    transition: none;
  }

  .page-home__folds .fold[open] .fold__body {
    animation: none;
  }
}