.page-home {
  background: var(--c-abyss);
  color: var(--c-mist);
  font-family: var(--font-body);
  overflow-x: hidden;
}

.page-home .visually-hidden {
  position: absolute;
  width: 1px;
  height: 1px;
  padding: 0;
  margin: -1px;
  overflow: hidden;
  clip: rect(0 0 0 0);
  white-space: nowrap;
  border: 0;
}

.page-home .eyebrow {
  font-family: var(--font-mono);
  font-size: 12px;
  letter-spacing: 0.2em;
  text-transform: uppercase;
  color: var(--c-sand);
  margin: 0 0 14px;
}

.page-home .eyebrow--ink {
  color: #8a4a12;
}

.page-home .section-title {
  font-family: var(--font-head);
  font-weight: 900;
  font-size: clamp(24px, 3.6vw, 38px);
  line-height: 1.12;
  letter-spacing: -0.018em;
  color: var(--c-paper);
  margin: 0 0 14px;
}

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

.page-home .block-head {
  display: flex;
  flex-wrap: wrap;
  align-items: baseline;
  justify-content: space-between;
  gap: 8px 24px;
  padding-bottom: 16px;
  border-bottom: 1px solid var(--line);
  margin-bottom: 28px;
}

.page-home .block-head .section-title {
  margin: 0;
}

.page-home .head-meta {
  color: var(--c-sand);
  white-space: nowrap;
}

/* ---------- 首屏拼贴 ---------- */
.page-home .home-hero {
  position: relative;
  padding: clamp(20px, 4vw, 40px) 0 clamp(40px, 7vw, 84px);
  background:
    radial-gradient(circle at 84% 4%, rgba(255, 106, 42, 0.13), transparent 52%),
    repeating-linear-gradient(90deg, rgba(38, 68, 90, 0.16) 0 1px, transparent 1px 96px),
    var(--c-abyss);
}

.page-home .hero-grid {
  display: grid;
  grid-template-columns: minmax(0, 1fr);
  gap: clamp(26px, 4vw, 44px);
  margin-top: clamp(20px, 3vw, 34px);
}

.page-home .hero-copy h1 {
  font-family: var(--font-head);
  font-weight: 900;
  font-size: clamp(32px, 6.6vw, 62px);
  line-height: 1.02;
  letter-spacing: -0.022em;
  color: var(--c-paper);
  margin: 0 0 18px;
  max-width: 11em;
}

.page-home .hero-lead {
  font-size: clamp(15px, 1.5vw, 18px);
  line-height: 1.8;
  color: var(--c-mist);
  max-width: 34em;
  margin: 0 0 26px;
}

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

.page-home .hero-step {
  display: grid;
  grid-template-columns: 38px minmax(0, 1fr);
  gap: 10px;
  padding: 13px 0;
  border-bottom: 1px solid var(--line-soft);
}

.page-home .hero-step-num {
  font-family: var(--font-mono);
  font-size: 13px;
  letter-spacing: 0.08em;
  color: var(--c-orange);
  padding-top: 2px;
}

.page-home .hero-step-title {
  font-family: var(--font-head);
  font-size: 15px;
  font-weight: 700;
  line-height: 1.4;
  color: var(--c-paper);
  margin: 0 0 4px;
}

.page-home .hero-step p {
  font-size: 14px;
  line-height: 1.72;
  color: var(--c-mist);
  margin: 0;
}

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

.page-home .hero-stage {
  position: relative;
  min-height: 280px;
}

.page-home .hero-stage-media {
  position: absolute;
  inset: 0;
  margin: 0;
  overflow: hidden;
  border: 1px solid var(--line);
  background: var(--c-panel);
}

.page-home .hero-stage-media img {
  display: block;
  width: 100%;
  height: 100%;
  object-fit: cover;
  opacity: 0.7;
}

.page-home .hero-stage-media::after {
  content: "";
  position: absolute;
  inset: 0;
  background: linear-gradient(158deg, rgba(8, 19, 31, 0.68), rgba(4, 11, 18, 0.94));
  pointer-events: none;
}

.page-home .stage-cards {
  position: relative;
  display: grid;
  gap: 14px;
  padding: clamp(16px, 2.6vw, 28px);
}

.page-home .version-card {
  position: relative;
  display: block;
  padding: 18px 18px 16px 22px;
  background: rgba(14, 34, 51, 0.92);
  border: 1px solid var(--line-soft);
  color: var(--c-mist);
  text-decoration: none;
  transition: border-color 0.25s var(--ease), transform 0.25s var(--ease), background 0.25s var(--ease);
}

.page-home .version-card::before {
  content: "";
  position: absolute;
  left: 0;
  top: 0;
  width: 3px;
  height: 100%;
  background: var(--c-steel);
  transition: background 0.25s var(--ease);
}

.page-home .version-card:hover,
.page-home .version-card:focus-visible {
  border-color: var(--c-orange);
  background: rgba(14, 34, 51, 1);
  transform: translateY(-2px);
}

.page-home .version-card:hover::before,
.page-home .version-card:focus-visible::before {
  background: var(--c-orange);
}

.page-home .version-chip {
  display: inline-block;
  font-family: var(--font-mono);
  font-size: 11px;
  letter-spacing: 0.14em;
  color: var(--c-orange);
  border: 1px solid rgba(255, 106, 42, 0.5);
  padding: 3px 8px;
  margin-bottom: 10px;
}

.page-home .version-chip--alt {
  color: var(--c-celadon);
  border-color: rgba(99, 168, 140, 0.5);
}

.page-home .version-name {
  display: block;
  font-family: var(--font-head);
  font-size: 18px;
  font-weight: 700;
  line-height: 1.35;
  color: var(--c-paper);
  margin-bottom: 8px;
}

.page-home .version-desc {
  display: block;
  font-size: 14px;
  line-height: 1.72;
  color: var(--c-mist);
  margin-bottom: 12px;
}

.page-home .version-go {
  display: inline-block;
  font-family: var(--font-mono);
  font-size: 12px;
  letter-spacing: 0.08em;
  color: var(--c-sand);
}

/* ---------- 横向主题带 ---------- */
.page-home .topic-band {
  background: var(--c-panel);
  border-top: 1px solid var(--line);
  border-bottom: 1px solid var(--line);
}

.page-home .topic-band-inner {
  display: flex;
  align-items: center;
  gap: 16px;
  padding-top: 12px;
  padding-bottom: 12px;
  overflow-x: auto;
  scrollbar-width: thin;
}

.page-home .topic-band-label {
  flex: none;
  color: var(--c-sand);
}

.page-home .topic-band-list {
  display: flex;
  gap: 8px;
  list-style: none;
  margin: 0;
  padding: 0;
  flex: none;
}

.page-home .topic-band-list a {
  display: inline-block;
  padding: 6px 12px;
  font-size: 13px;
  color: var(--c-mist);
  text-decoration: none;
  border: 1px solid var(--line-soft);
  white-space: nowrap;
  transition: color 0.2s var(--ease), border-color 0.2s var(--ease), background 0.2s var(--ease);
}

.page-home .topic-band-list a:hover,
.page-home .topic-band-list a:focus-visible {
  color: var(--c-paper);
  border-color: var(--c-orange);
  background: rgba(255, 106, 42, 0.1);
}

/* ---------- 首次到达 ---------- */
.page-home .home-arrive {
  padding: clamp(40px, 7vw, 88px) 0;
  background:
    repeating-linear-gradient(90deg, rgba(38, 68, 90, 0.15) 0 1px, transparent 1px 84px),
    repeating-linear-gradient(0deg, rgba(38, 68, 90, 0.15) 0 1px, transparent 1px 84px),
    var(--c-abyss);
}

.page-home .arrive-grid {
  display: grid;
  grid-template-columns: minmax(0, 1fr);
  gap: clamp(26px, 4vw, 48px);
}

.page-home .arrive-lead {
  font-size: 16px;
  line-height: 1.82;
  max-width: 36em;
  margin: 0;
}

.page-home .arrive-steps {
  list-style: none;
  margin: 26px 0 0;
  padding: 0;
}

.page-home .arrive-steps li {
  position: relative;
  padding: 16px 0 16px 56px;
  border-top: 1px solid var(--line-soft);
}

.page-home .arrive-steps li:last-child {
  border-bottom: 1px solid var(--line-soft);
}

.page-home .arrive-num {
  position: absolute;
  left: 0;
  top: 18px;
  color: var(--c-celadon);
  letter-spacing: 0.08em;
}

.page-home .arrive-steps h3 {
  font-family: var(--font-head);
  font-size: 17px;
  font-weight: 700;
  line-height: 1.4;
  color: var(--c-paper);
  margin: 0 0 6px;
}

.page-home .arrive-steps p {
  font-size: 14.5px;
  line-height: 1.76;
  margin: 0;
  color: var(--c-mist);
}

.page-home .arrive-figure {
  margin: 0;
}

.page-home .media-caption {
  margin-top: 10px;
  font-family: var(--font-mono);
  font-size: 12px;
  line-height: 1.6;
  letter-spacing: 0.04em;
  color: var(--c-sand);
}

/* ---------- 版本对照 ---------- */
.page-home .home-versions {
  padding: clamp(40px, 7vw, 88px) 0;
  background: var(--c-panel);
  border-top: 1px solid var(--line);
  border-bottom: 1px solid var(--line);
}

.page-home .versions-grid {
  display: grid;
  grid-template-columns: minmax(0, 1fr);
  gap: clamp(22px, 3.5vw, 40px);
  align-items: start;
}

.page-home .table-scroll {
  overflow-x: auto;
  border: 1px solid var(--line);
  background: rgba(8, 19, 31, 0.55);
}

.page-home .versions-table {
  width: 100%;
  min-width: 480px;
  border-collapse: collapse;
  font-size: 14px;
}

.page-home .versions-table th,
.page-home .versions-table td {
  padding: 13px 14px;
  text-align: left;
  border-bottom: 1px solid var(--line-soft);
  vertical-align: top;
}

.page-home .versions-table thead th {
  font-family: var(--font-mono);
  font-size: 12px;
  letter-spacing: 0.1em;
  color: var(--c-sand);
  background: rgba(14, 34, 51, 0.9);
  border-bottom: 1px solid var(--line);
}

.page-home .versions-table tbody th {
  font-weight: 500;
  color: var(--c-steel);
  color: #7f97aa;
  background: rgba(14, 34, 51, 0.4);
  width: 30%;
}

.page-home .versions-table td {
  color: var(--c-paper);
}

.page-home .versions-table tbody tr:last-child th,
.page-home .versions-table tbody tr:last-child td {
  border-bottom: 0;
}

.page-home .versions-table tbody tr:hover td {
  background: rgba(255, 106, 42, 0.06);
}

.page-home .versions-figure {
  margin: 0;
}

.page-home .versions-foot {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  justify-content: space-between;
  gap: 18px;
  margin-top: 30px;
  padding-top: 22px;
  border-top: 1px solid var(--line-soft);
}

.page-home .versions-foot p {
  margin: 0;
  font-size: 14.5px;
  line-height: 1.78;
  max-width: 46em;
}

/* ---------- 资料与更新 ---------- */
.page-home .home-library {
  position: relative;
  padding: clamp(40px, 7vw, 88px) 0;
  background: var(--c-abyss);
  overflow: hidden;
}

.page-home .library-bg {
  position: absolute;
  inset: 0;
  margin: 0;
  overflow: hidden;
}

.page-home .library-bg img {
  width: 100%;
  height: 100%;
  object-fit: cover;
  opacity: 0.3;
}

.page-home .library-bg::after {
  content: "";
  position: absolute;
  inset: 0;
  background: linear-gradient(180deg, rgba(8, 19, 31, 0.86), rgba(8, 19, 31, 0.98));
  pointer-events: none;
}

.page-home .library-inner {
  position: relative;
}

.page-home .library-grid {
  list-style: none;
  margin: 0;
  padding: 0;
  display: grid;
  grid-template-columns: minmax(0, 1fr);
  gap: 16px;
}

.page-home .library-card {
  padding: 22px 20px;
  background: rgba(14, 34, 51, 0.78);
  border: 1px solid var(--line-soft);
  transition: border-color 0.25s var(--ease), transform 0.25s var(--ease);
}

.page-home .library-card:hover {
  border-color: var(--c-steel);
  transform: translateY(-2px);
}

.page-home .library-index {
  display: block;
  color: var(--c-sand);
  letter-spacing: 0.14em;
  margin-bottom: 12px;
}

.page-home .library-card h3 {
  font-family: var(--font-head);
  font-size: 18px;
  font-weight: 700;
  line-height: 1.4;
  color: var(--c-paper);
  margin: 0 0 10px;
}

.page-home .library-card p {
  font-size: 14.5px;
  line-height: 1.78;
  margin: 0 0 16px;
  color: var(--c-mist);
}

.page-home .library-card .link-underline {
  font-size: 14px;
  color: var(--c-orange-lift);
}

/* ---------- 导出四步 ---------- */
.page-home .home-export {
  padding: clamp(40px, 7vw, 88px) 0;
  background: var(--c-paper);
  color: var(--c-ink);
}

.page-home .export-grid {
  display: grid;
  grid-template-columns: minmax(0, 1fr);
  gap: clamp(24px, 4vw, 46px);
  align-items: start;
}

.page-home .export-lead {
  font-size: 15.5px;
  line-height: 1.84;
  color: var(--c-ink);
  max-width: 34em;
  margin: 0 0 14px;
}

.page-home .export-copy .btn {
  margin-top: 10px;
}

.page-home .export-panel {
  border: 1px solid var(--line-paper);
  background: rgba(255, 255, 255, 0.5);
}

.page-home .export-details summary {
  cursor: pointer;
  list-style: none;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 14px;
  padding: 16px 18px;
  font-family: var(--font-head);
  font-size: 15px;
  font-weight: 700;
  color: var(--c-ink);
}

.page-home .export-details summary::-webkit-details-marker {
  display: none;
}

.page-home .export-details summary::after {
  content: "+";
  font-family: var(--font-mono);
  font-size: 18px;
  line-height: 1;
  color: var(--c-orange);
}

.page-home .export-details[open] summary::after {
  content: "–";
}

.page-home .export-details[open] summary {
  border-bottom: 1px solid var(--line-paper);
}

.page-home .export-steps {
  list-style: none;
  margin: 0;
  padding: 18px;
  display: grid;
  grid-template-columns: minmax(0, 1fr);
  gap: 18px;
}

.page-home .export-steps li {
  position: relative;
  padding-left: 40px;
}

.page-home .export-num {
  position: absolute;
  left: 0;
  top: 1px;
  color: #b0500f;
  letter-spacing: 0.08em;
}

.page-home .export-steps h3 {
  font-family: var(--font-head);
  font-size: 15px;
  font-weight: 700;
  line-height: 1.4;
  color: var(--c-ink);
  margin: 0 0 4px;
}

.page-home .export-steps p {
  font-size: 14px;
  line-height: 1.72;
  margin: 0;
  color: #3d4b58;
}

.page-home .export-note {
  margin: 0;
  padding: 12px 18px 16px;
  color: #7a6a4c;
  border-top: 1px solid var(--line-paper);
}

/* ---------- 联系与支持 ---------- */
.page-home .home-support {
  padding: clamp(40px, 7vw, 88px) 0 0;
  background: var(--c-abyss);
}

.page-home .support-grid {
  display: grid;
  grid-template-columns: minmax(0, 1fr);
  gap: clamp(24px, 4vw, 48px);
  align-items: start;
}

.page-home .support-copy p {
  font-size: 15px;
  line-height: 1.82;
  max-width: 34em;
  margin: 0 0 14px;
}

.page-home .support-copy .btn {
  margin-top: 8px;
}

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

.page-home .support-list li {
  display: grid;
  grid-template-columns: minmax(0, 1fr);
  gap: 4px;
  padding: 14px 0;
  border-bottom: 1px solid var(--line-soft);
}

.page-home .support-label {
  font-family: var(--font-mono);
  font-size: 11.5px;
  letter-spacing: 0.14em;
  color: var(--c-sand);
}

.page-home .support-value {
  font-size: 15px;
  line-height: 1.6;
  color: var(--c-paper);
  word-break: break-word;
}

.page-home .support-tip {
  margin: 32px 0 0;
  padding: 16px 0 40px;
  border-top: 1px solid var(--line-soft);
  color: var(--c-steel);
  color: #7f97aa;
}

/* ---------- 响应式 ---------- */
@media (min-width: 640px) {
  .page-home .export-steps {
    grid-template-columns: repeat(2, minmax(0, 1fr));
    gap: 22px 26px;
    padding: 22px;
  }

  .page-home .support-list li {
    grid-template-columns: 150px minmax(0, 1fr);
    align-items: baseline;
    gap: 16px;
  }

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

@media (min-width: 900px) {
  .page-home .hero-grid {
    grid-template-columns: minmax(0, 5fr) minmax(0, 7fr);
    align-items: start;
  }

  .page-home .hero-copy {
    padding-top: 30px;
  }

  .page-home .hero-stage {
    margin-top: -14px;
  }

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

  .page-home .arrive-figure {
    margin-top: 44px;
  }

  .page-home .versions-grid {
    grid-template-columns: minmax(0, 7fr) minmax(0, 5fr);
  }

  .page-home .export-grid {
    grid-template-columns: minmax(0, 5fr) minmax(0, 7fr);
  }

  .page-home .support-grid {
    grid-template-columns: minmax(0, 6fr) minmax(0, 6fr);
  }

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

@media (min-width: 1100px) {
  .page-home .hero-copy {
    padding-top: 44px;
  }

  .page-home .stage-cards {
    padding: 30px;
    gap: 16px;
  }
}

@media (prefers-reduced-motion: reduce) {
  .page-home .version-card,
  .page-home .library-card,
  .page-home .topic-band-list a {
    transition: none;
  }

  .page-home .version-card:hover,
  .page-home .version-card:focus-visible,
  .page-home .library-card:hover {
    transform: none;
  }
}