.page-home .hero {
  padding: clamp(26px, 5vw, 54px) 0 clamp(30px, 5vw, 58px);
}

.page-home .hero__context {
  margin: 0 0 14px;
}

.page-home .hero__title {
  font-family: var(--font-head);
  font-weight: 900;
  font-size: clamp(2.1rem, 5.6vw, 4.5rem);
  line-height: 1.06;
  letter-spacing: -0.01em;
  color: var(--c-deep);
  margin: 0 0 18px;
  max-width: 16em;
}

.page-home .hero__lede {
  max-width: 34em;
  margin: 0 0 clamp(24px, 3vw, 40px);
}

/* ---------- 首屏索引板 ---------- */

.page-home .home-board {
  display: grid;
  grid-template-columns: repeat(12, minmax(0, 1fr));
  grid-template-areas:
    "focus focus focus focus focus focus c1 c1 c1 c2 c2 c2"
    "focus focus focus focus focus focus bar bar bar bar bar bar";
  gap: 18px;
}

.page-home .board-focus {
  grid-area: focus;
  position: relative;
  isolation: isolate;
  overflow: hidden;
  border-radius: var(--radius-xl);
  background: var(--c-deep);
  color: var(--c-cream);
  padding: clamp(22px, 2.6vw, 34px);
  display: flex;
  flex-direction: column;
  justify-content: flex-end;
  gap: 10px;
  min-height: 372px;
}

.page-home .board-focus__media {
  position: absolute;
  inset: 0;
  z-index: -1;
}

.page-home .board-focus__media img {
  width: 100%;
  height: 100%;
  object-fit: cover;
  opacity: 0.5;
  display: block;
}

.page-home .board-focus__media::after {
  content: "";
  position: absolute;
  inset: 0;
  background: linear-gradient(165deg, rgba(11, 30, 60, 0.3) 0%, rgba(11, 30, 60, 0.94) 74%);
}

.page-home .board-focus__tag {
  margin: 0;
  font-family: var(--font-mono);
  font-size: var(--fs-12);
  letter-spacing: 0.14em;
  color: var(--c-gold-soft);
}

.page-home .board-focus__title {
  margin: 0;
  font-family: var(--font-head);
  font-weight: 800;
  font-size: clamp(1.5rem, 2.6vw, 2.1rem);
  line-height: 1.22;
}

.page-home .board-focus__text {
  margin: 0;
  max-width: 30em;
  line-height: 1.72;
  color: rgba(247, 244, 238, 0.84);
}

.page-home .board-focus__meta {
  margin: 4px 0 0;
  font-family: var(--font-mono);
  font-size: var(--fs-14);
  color: var(--c-gold-soft);
}

.page-home .board-focus .btn {
  align-self: flex-start;
  margin-top: 8px;
}

.page-home .board-card {
  position: relative;
  overflow: hidden;
  border-radius: var(--radius-lg);
  background: var(--c-paper);
  border: 1px solid var(--c-line);
  padding: 20px;
  display: flex;
  flex-direction: column;
  gap: 8px;
  transition: border-color var(--dur-2) var(--ease), transform var(--dur-2) var(--ease);
}

.page-home .board-card:hover {
  transform: translateY(-3px);
  border-color: var(--c-gold-soft);
}

.page-home .board-card--a {
  grid-area: c1;
  border-top: 4px solid var(--c-jade);
}

.page-home .board-card--b {
  grid-area: c2;
  border-top: 4px solid var(--c-coral);
}

.page-home .board-card__media {
  margin: -20px -20px 4px;
  height: 92px;
  overflow: hidden;
  background: linear-gradient(120deg, var(--c-deep), var(--c-clay));
}

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

.page-home .board-card__tag {
  margin: 0;
  font-family: var(--font-mono);
  font-size: var(--fs-12);
  letter-spacing: 0.1em;
  color: var(--c-rock);
}

.page-home .board-card--a .board-card__tag {
  color: var(--c-jade);
}

.page-home .board-card--b .board-card__tag {
  color: var(--c-coral);
}

.page-home .board-card__title {
  margin: 0;
  font-family: var(--font-head);
  font-weight: 800;
  font-size: var(--fs-22);
  line-height: 1.3;
  color: var(--c-deep);
}

.page-home .board-card__text {
  margin: 0;
  font-size: var(--fs-14);
  line-height: 1.7;
  color: var(--c-ink);
}

.page-home .board-bar {
  grid-area: bar;
  border-radius: var(--radius-lg);
  background: linear-gradient(120deg, var(--c-night), var(--c-deep));
  color: var(--c-cream);
  padding: 16px 22px;
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  justify-content: space-between;
  gap: 12px 24px;
}

.page-home .board-bar__main {
  display: flex;
  flex-wrap: wrap;
  align-items: baseline;
  gap: 6px 16px;
}

.page-home .board-bar__ver {
  font-family: var(--font-mono);
  font-size: var(--fs-22);
  font-weight: 700;
  color: var(--c-gold);
  letter-spacing: 0.04em;
}

.page-home .board-bar__note {
  margin: 0;
  font-size: var(--fs-14);
  color: rgba(247, 244, 238, 0.78);
  max-width: 46em;
}

.page-home .board-bar__links {
  display: flex;
  flex-wrap: wrap;
  gap: 16px;
}

.page-home .board-bar__links a {
  font-size: var(--fs-14);
  color: var(--c-gold-soft);
  text-decoration: none;
  border-bottom: 1px solid transparent;
  transition: border-color var(--dur-1) var(--ease);
}

.page-home .board-bar__links a:hover,
.page-home .board-bar__links a:focus-visible {
  border-bottom-color: currentColor;
}

/* ---------- 首次访问 ---------- */

.page-home .section-head {
  margin-bottom: clamp(20px, 3vw, 34px);
}

.page-home .section-head .lede {
  max-width: 34em;
}

.page-home .flow-list {
  list-style: none;
  margin: 0;
  padding: 0;
  display: grid;
  gap: 16px;
  max-width: 760px;
}

.page-home .flow-step {
  display: grid;
  grid-template-columns: 64px 1fr;
  gap: 18px;
  align-items: start;
  padding: 22px;
  background: var(--c-paper);
  border: 1px solid var(--c-line);
  border-radius: var(--radius-md);
  transition: border-color var(--dur-2) var(--ease);
}

.page-home .flow-step:hover {
  border-color: var(--c-gold-soft);
}

.page-home .flow-step__num {
  font-family: var(--font-mono);
  font-size: var(--fs-30);
  font-weight: 700;
  line-height: 1;
  color: var(--c-gold);
}

.page-home .flow-step__body h3 {
  margin: 0 0 6px;
  font-size: var(--fs-22);
}

.page-home .flow-step__body p {
  margin: 0;
  font-size: var(--fs-17);
  line-height: 1.72;
}

.page-home .flow-hint {
  margin: 20px 0 0;
  max-width: 760px;
  padding: 16px 22px;
  border-left: 4px solid var(--c-clay);
  border-radius: 0 var(--radius-sm) var(--radius-sm) 0;
  background: rgba(181, 113, 79, 0.1);
  font-size: var(--fs-17);
  line-height: 1.72;
}

/* ---------- 路径对照 ---------- */

.page-home .compare-hero {
  margin: 0 0 24px;
  border-radius: var(--radius-lg);
  overflow: hidden;
  background: linear-gradient(120deg, var(--c-deep), var(--c-jade));
}

.page-home .compare-hero img {
  width: 100%;
  height: auto;
  display: block;
  object-fit: cover;
}

.page-home .compare {
  display: grid;
  grid-template-columns: 1fr;
  gap: 18px;
}

.page-home .compare-col {
  position: relative;
  padding: 24px;
  border-radius: var(--radius-lg);
  background: var(--c-paper);
  border: 2px solid var(--c-line);
  transition: transform var(--dur-2) var(--ease), border-color var(--dur-2) var(--ease),
    box-shadow var(--dur-2) var(--ease);
}

.page-home .compare-col:hover,
.page-home .compare-col:focus-within {
  transform: translateY(-4px);
}

.page-home .compare-col:focus-visible {
  outline: 3px solid var(--c-gold);
  outline-offset: 3px;
}

.page-home .compare-col--jade:hover,
.page-home .compare-col--jade:focus-within {
  border-color: var(--c-jade);
  box-shadow: 0 14px 34px rgba(46, 139, 122, 0.16);
}

.page-home .compare-col--coral:hover,
.page-home .compare-col--coral:focus-within {
  border-color: var(--c-coral);
  box-shadow: 0 14px 34px rgba(228, 113, 90, 0.16);
}

.page-home .compare-col__tag {
  margin: 0 0 10px;
  font-family: var(--font-mono);
  font-size: var(--fs-12);
  letter-spacing: 0.14em;
  color: var(--c-rock);
}

.page-home .compare-col--jade .compare-col__tag {
  color: var(--c-jade);
}

.page-home .compare-col--coral .compare-col__tag {
  color: var(--c-coral);
}

.page-home .compare-col__badge {
  margin: 0 0 12px;
  font-family: var(--font-mono);
  font-size: var(--fs-44);
  font-weight: 700;
  line-height: 1;
  letter-spacing: -0.02em;
  opacity: 0.45;
  transition: opacity var(--dur-2) var(--ease);
}

.page-home .compare-col--jade .compare-col__badge {
  color: var(--c-jade);
}

.page-home .compare-col--coral .compare-col__badge {
  color: var(--c-coral);
}

.page-home .compare-col:hover .compare-col__badge,
.page-home .compare-col:focus-within .compare-col__badge {
  opacity: 1;
}

.page-home .compare-col h3 {
  margin: 0 0 10px;
  font-size: var(--fs-22);
  color: var(--c-deep);
}

.page-home .compare-col p {
  margin: 0 0 14px;
  font-size: var(--fs-17);
  line-height: 1.72;
}

.page-home .compare-col__list {
  list-style: none;
  margin: 0;
  padding: 0;
  display: grid;
  gap: 8px;
}

.page-home .compare-col__list li {
  position: relative;
  padding-left: 20px;
  font-size: var(--fs-14);
  color: var(--c-rock);
  line-height: 1.65;
}

.page-home .compare-col__list li::before {
  content: "";
  position: absolute;
  left: 0;
  top: 8px;
  width: 9px;
  height: 2px;
  background: currentColor;
}

.page-home .compare-note {
  margin: 22px 0 0;
  max-width: 62em;
  font-size: var(--fs-17);
  line-height: 1.75;
  color: var(--c-ink);
  padding-left: 18px;
  border-left: 3px solid var(--c-mist);
}

/* ---------- 家庭共用 ---------- */

.page-home .shared {
  display: grid;
  grid-template-columns: 1fr;
  gap: 28px;
  align-items: center;
}

.page-home .shared__body h2 {
  margin: 8px 0 16px;
}

.page-home .shared__body > p {
  max-width: 34em;
  margin: 0 0 18px;
}

.page-home .shared__list {
  list-style: none;
  margin: 0 0 22px;
  padding: 0;
  display: grid;
  gap: 10px;
}

.page-home .shared__list li {
  position: relative;
  padding-left: 24px;
  font-size: var(--fs-17);
  line-height: 1.7;
}

.page-home .shared__list li::before {
  content: "";
  position: absolute;
  left: 0;
  top: 12px;
  width: 12px;
  height: 2px;
  background: var(--c-jade);
}

.page-home .shared__list strong {
  font-family: var(--font-mono);
  font-size: var(--fs-22);
  color: var(--c-jade);
  vertical-align: -0.06em;
}

.page-home .shared__media img {
  width: 100%;
  height: auto;
  display: block;
  border-radius: var(--radius-xl);
  object-fit: cover;
}

/* ---------- 版本时间轴 ---------- */

.page-home .timeline {
  position: relative;
  display: grid;
  grid-template-columns: 1fr;
  gap: 10px;
  padding-left: 26px;
}

.page-home .timeline::before {
  content: "";
  position: absolute;
  left: 6px;
  top: 6px;
  bottom: 6px;
  width: 2px;
  background: linear-gradient(180deg, var(--c-jade), var(--c-gold) 55%, var(--c-coral));
}

.page-home .timeline__item {
  position: relative;
  border-radius: var(--radius-md);
  background: rgba(247, 244, 238, 0.06);
  border: 1px solid var(--c-line-light);
  padding: 16px 20px;
  color: var(--c-cream);
  transition: background var(--dur-2) var(--ease), border-color var(--dur-2) var(--ease);
}

.page-home .timeline__item[open] {
  background: rgba(247, 244, 238, 0.11);
  border-color: var(--c-line-dark);
}

.page-home .timeline__item summary {
  display: flex;
  flex-wrap: wrap;
  align-items: baseline;
  gap: 6px 14px;
  cursor: pointer;
  list-style: none;
  font-family: var(--font-head);
  font-weight: 700;
}

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

.page-home .timeline__item summary:focus-visible {
  outline: 2px solid var(--c-gold);
  outline-offset: 4px;
}

.page-home .timeline__dot {
  width: 12px;
  height: 12px;
  border-radius: 50%;
  background: var(--c-gold);
  box-shadow: 0 0 0 3px rgba(217, 164, 65, 0.24);
  flex: none;
  align-self: center;
}

.page-home .timeline__ver {
  font-family: var(--font-mono);
  font-size: var(--fs-17);
  color: var(--c-gold-soft);
  letter-spacing: 0.04em;
}

.page-home .timeline__label {
  font-size: var(--fs-14);
  color: rgba(247, 244, 238, 0.68);
  font-weight: 400;
}

.page-home .timeline__item p {
  margin: 12px 0 0;
  padding-left: 26px;
  font-size: var(--fs-17);
  line-height: 1.75;
  color: rgba(247, 244, 238, 0.86);
}

.page-home .timeline__foot {
  margin: 26px 0 0;
  font-size: var(--fs-17);
  line-height: 1.75;
  color: rgba(247, 244, 238, 0.86);
}

.page-home .timeline__foot a {
  color: var(--c-gold-soft);
  text-decoration: none;
  border-bottom: 1px solid rgba(240, 208, 138, 0.45);
}

.page-home .timeline__foot a:hover {
  border-bottom-color: var(--c-gold-soft);
}

/* ---------- 联系通道 ---------- */

.page-home .contact-strip {
  display: grid;
  grid-template-columns: 1fr;
  gap: 16px;
}

.page-home .contact-card {
  display: flex;
  flex-direction: column;
  align-items: flex-start;
  gap: 10px;
  padding: 24px;
  border-radius: var(--radius-lg);
  background: var(--c-cream);
  border: 1px solid var(--c-line);
}

.page-home .contact-card__label {
  margin: 0;
  font-family: var(--font-mono);
  font-size: var(--fs-12);
  letter-spacing: 0.14em;
  color: var(--c-rock);
  text-transform: uppercase;
}

.page-home .contact-card__value {
  margin: 0;
  font-family: var(--font-mono);
  font-size: var(--fs-22);
  font-weight: 700;
  color: var(--c-deep);
  word-break: break-word;
}

.page-home .contact-card__note {
  margin: 0;
  font-size: var(--fs-14);
  line-height: 1.7;
  color: var(--c-rock);
}

.page-home .contact-foot {
  margin: 24px 0 0;
  max-width: 62em;
  font-size: var(--fs-17);
  line-height: 1.75;
}

.page-home .contact-foot a {
  color: var(--c-deep);
  text-decoration: none;
  border-bottom: 1px solid var(--c-gold);
}

.page-home .contact-foot a:hover {
  border-bottom-color: var(--c-coral);
}

/* ---------- 响应式 ---------- */

@media (max-width: 1080px) {
  .page-home .home-board {
    grid-template-columns: repeat(6, minmax(0, 1fr));
    grid-template-areas:
      "focus focus focus focus focus focus"
      "c1 c1 c1 c2 c2 c2"
      "bar bar bar bar bar bar";
  }

  .page-home .board-focus {
    min-height: 320px;
  }

  .page-home .shared {
    grid-template-columns: 1fr;
  }

  .page-home .shared__media {
    order: -1;
  }

  .page-home .shared__media img {
    max-height: 360px;
  }
}

@media (min-width: 820px) {
  .page-home .compare {
    grid-template-columns: 1fr 1fr;
  }

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

  .page-home .timeline {
    grid-template-columns: repeat(4, minmax(0, 1fr));
    gap: 18px;
    padding-left: 0;
    padding-top: 34px;
  }

  .page-home .timeline::before {
    left: 0;
    right: 0;
    top: 6px;
    bottom: auto;
    width: auto;
    height: 2px;
    background: linear-gradient(90deg, var(--c-jade), var(--c-gold) 55%, var(--c-coral));
  }

  .page-home .timeline__item {
    padding: 18px;
  }

  .page-home .timeline__item summary {
    flex-direction: column;
    align-items: flex-start;
    gap: 8px;
  }

  .page-home .timeline__dot {
    position: absolute;
    top: -34px;
    left: 18px;
  }

  .page-home .timeline__item p {
    padding-left: 0;
  }
}

@media (max-width: 620px) {
  .page-home .home-board {
    grid-template-columns: 1fr;
    grid-template-areas:
      "focus"
      "c1"
      "c2"
      "bar";
  }

  .page-home .hero__title {
    font-size: clamp(1.9rem, 8vw, 2.6rem);
  }

  .page-home .board-focus {
    min-height: 280px;
  }

  .page-home .flow-step {
    grid-template-columns: 1fr;
    gap: 8px;
    padding: 18px;
  }

  .page-home .compare-col__badge {
    font-size: var(--fs-30);
  }

  .page-home .contact-card__value {
    font-size: var(--fs-17);
  }
}

@media (prefers-reduced-motion: reduce) {
  .page-home .board-card,
  .page-home .compare-col,
  .page-home .compare-col__badge {
    transition: none;
  }

  .page-home .board-card:hover,
  .page-home .compare-col:hover,
  .page-home .compare-col:focus-within {
    transform: none;
  }
}