.page-home {
  --home-rail-w: clamp(230px, 23vw, 310px);
  --home-ink-soft: #2b363c;
  background: var(--ink);
  color: var(--smoke);
  overflow-x: hidden;
}

/* ---------- 通用标题层级 ---------- */
.page-home .section-head__eyebrow {
  margin: 0 0 12px;
  font-family: var(--font-mono);
  font-size: 11.5px;
  letter-spacing: 0.18em;
  color: var(--bronze);
  text-transform: uppercase;
}

.page-home .section-head__title {
  margin: 0;
  font-family: var(--font-display);
  font-weight: 700;
  font-size: clamp(1.55rem, 4vw, 2.45rem);
  line-height: 1.22;
  letter-spacing: -0.015em;
  color: var(--paper);
}

/* ---------- 封面首屏 ---------- */
.page-home .cover {
  position: relative;
  overflow: hidden;
  padding: clamp(26px, 5vw, 56px) var(--gutter) clamp(36px, 6vw, 76px);
  border-bottom: 1px solid var(--line);
  background:
    radial-gradient(120% 90% at 88% 4%, rgba(43, 179, 163, 0.14), transparent 60%),
    radial-gradient(90% 70% at 4% 98%, rgba(255, 111, 94, 0.1), transparent 62%),
    var(--ink);
}

.page-home .cover::after {
  content: "";
  position: absolute;
  inset: auto 0 0 0;
  height: 46%;
  background-image: repeating-linear-gradient(180deg, rgba(201, 210, 214, 0.07) 0 1px, transparent 1px 12px);
  -webkit-mask-image: linear-gradient(180deg, transparent, #000 88%);
  mask-image: linear-gradient(180deg, transparent, #000 88%);
  pointer-events: none;
}

.page-home .cover__inner {
  position: relative;
  z-index: 1;
  max-width: var(--maxw);
  margin: 0 auto;
  display: grid;
  gap: clamp(18px, 3vw, 26px);
  grid-template-columns: minmax(0, 1fr);
  grid-template-areas:
    "head"
    "rail"
    "body"
    "figure";
}

/* 索引栏 */
.page-home .cover__rail {
  grid-area: rail;
  border-top: 1px solid var(--line-strong);
  padding-top: 14px;
  min-width: 0;
}

.page-home .cover__rail-title {
  display: flex;
  align-items: baseline;
  justify-content: space-between;
  margin: 0 0 12px;
  font-family: var(--font-mono);
  font-size: 11px;
  letter-spacing: 0.2em;
  color: var(--bronze);
}

.page-home .entry-list {
  list-style: none;
  margin: 0;
  padding: 0;
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(148px, 1fr));
  gap: 8px;
}

.page-home .entry__link {
  display: flex;
  gap: 10px;
  align-items: flex-start;
  height: 100%;
  padding: 11px 12px;
  border: 1px solid var(--line);
  background: rgba(28, 37, 43, 0.55);
  color: var(--paper);
  text-decoration: none;
  transition: border-color 0.25s var(--ease), background-color 0.25s var(--ease), transform 0.25s var(--ease);
}

.page-home .entry__link:hover,
.page-home .entry__link:focus-visible {
  border-color: var(--teal);
  background: rgba(43, 179, 163, 0.09);
  transform: translateY(-2px);
}

.page-home .entry__num {
  flex: 0 0 auto;
  font-family: var(--font-mono);
  font-size: 11px;
  letter-spacing: 0.1em;
  line-height: 1.7;
  color: var(--teal);
}

.page-home .entry__text {
  display: block;
  min-width: 0;
}

.page-home .entry__label {
  display: block;
  font-family: var(--font-display);
  font-size: 0.95rem;
  font-weight: 700;
  line-height: 1.4;
  color: var(--paper);
}

.page-home .entry__hint {
  display: block;
  margin-top: 3px;
  font-size: 12px;
  line-height: 1.55;
  color: var(--mist);
}

/* 封面标题区 */
.page-home .cover__head {
  grid-area: head;
  min-width: 0;
}

.page-home .cover__eyebrow {
  margin: 0 0 12px;
  font-family: var(--font-mono);
  font-size: 11.5px;
  letter-spacing: 0.16em;
  color: var(--bronze);
}

.page-home .cover__title {
  margin: 0;
  font-family: var(--font-display);
  font-weight: 700;
  font-size: clamp(2rem, 7.6vw, 4.4rem);
  line-height: 1.1;
  letter-spacing: -0.02em;
  color: var(--paper);
  max-width: 18ch;
}

.page-home .cover__body {
  grid-area: body;
  display: grid;
  gap: 20px;
  justify-items: start;
  min-width: 0;
}

.page-home .cover__lede {
  margin: 0;
  max-width: 54ch;
  font-size: clamp(15px, 1.6vw, 17px);
  line-height: 1.78;
  color: var(--smoke);
}

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

.page-home .cover__figure {
  grid-area: figure;
  margin: 0;
  width: 100%;
}

.page-home .cover__figure img,
.page-home .theme-card__figure img,
.page-home .guide-strip__figure img,
.page-home .scope__figure img {
  display: block;
  width: 100%;
  max-width: 100%;
  height: auto;
  object-fit: cover;
}

@media (min-width: 980px) {
  .page-home .cover__inner {
    grid-template-columns: var(--home-rail-w) minmax(0, 1fr);
    grid-template-areas:
      "rail head"
      "rail body"
      "rail figure";
    column-gap: clamp(30px, 4vw, 64px);
    row-gap: clamp(18px, 2vw, 26px);
    align-items: start;
  }

  .page-home .cover__rail {
    border-top: 0;
    padding-top: 0;
    border-left: 1px solid var(--line-strong);
    padding-left: 22px;
  }

  .page-home .entry-list {
    grid-template-columns: minmax(0, 1fr);
  }

  .page-home .entry__hint {
    font-size: 12.5px;
  }
}

/* ---------- 主题簇 ---------- */
.page-home .themes {
  padding: clamp(40px, 7vw, 92px) var(--gutter);
  border-bottom: 1px solid var(--line);
  background: linear-gradient(180deg, #131b20 0%, var(--ink) 72%);
}

.page-home .themes__head,
.page-home .themes__grid,
.page-home .themes__foot {
  max-width: var(--maxw);
  margin-left: auto;
  margin-right: auto;
}

.page-home .themes__intro {
  margin: 14px 0 0;
  max-width: 58ch;
  font-size: 15px;
  line-height: 1.78;
  color: var(--smoke);
}

.page-home .themes__grid {
  margin-top: clamp(24px, 4vw, 44px);
  display: grid;
  gap: clamp(12px, 1.8vw, 20px);
  grid-template-columns: minmax(0, 1fr);
}

@media (min-width: 680px) {
  .page-home .themes__grid {
    grid-template-columns: repeat(2, minmax(0, 1fr));
  }
}

@media (min-width: 1060px) {
  .page-home .themes__grid {
    grid-template-columns: repeat(3, minmax(0, 1fr));
    padding-bottom: 32px;
  }

  .page-home .theme-card:nth-child(2),
  .page-home .theme-card:nth-child(4),
  .page-home .theme-card:nth-child(6) {
    transform: translateY(32px);
  }
}

.page-home .theme-card {
  display: flex;
  flex-direction: column;
  gap: 6px;
  padding: 16px 16px 15px;
  background: var(--graphite);
  border: 1px solid var(--line-strong);
  transition: border-color 0.25s var(--ease), background-color 0.25s var(--ease);
}

.page-home .theme-card:hover,
.page-home .theme-card:focus-within {
  border-color: var(--teal);
  background: #202b31;
}

.page-home .theme-card__figure {
  margin: 0 0 10px;
}

.page-home .theme-card__num {
  margin: 0;
  font-family: var(--font-mono);
  font-size: 11px;
  letter-spacing: 0.14em;
  color: var(--teal);
}

.page-home .theme-card__name {
  margin: 0;
  font-family: var(--font-display);
  font-size: 1.08rem;
  font-weight: 700;
  line-height: 1.4;
}

.page-home .theme-card__name a {
  color: var(--paper);
  text-decoration: none;
  border-bottom: 1px solid transparent;
  transition: color 0.2s var(--ease), border-color 0.2s var(--ease);
}

.page-home .theme-card__name a:hover,
.page-home .theme-card__name a:focus-visible {
  color: var(--teal);
  border-bottom-color: var(--teal);
}

.page-home .theme-card__meta {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  gap: 8px;
  margin: 10px 0 0;
  font-family: var(--font-mono);
  font-size: 11.5px;
  color: var(--mist);
}

.page-home .themes__foot {
  margin-top: clamp(24px, 3vw, 36px);
  font-size: 14px;
}

.page-home .themes__foot a {
  color: var(--teal);
  text-decoration: none;
  border-bottom: 1px solid rgba(43, 179, 163, 0.42);
  transition: border-color 0.2s var(--ease);
}

.page-home .themes__foot a:hover,
.page-home .themes__foot a:focus-visible {
  border-bottom-color: var(--teal);
}

/* ---------- 指南更新带 ---------- */
.page-home .guide-strip {
  padding: clamp(40px, 7vw, 92px) var(--gutter);
  border-bottom: 1px solid var(--line);
  background: var(--ink);
}

.page-home .guide-strip__head,
.page-home .guide-strip__body {
  max-width: var(--maxw);
  margin: 0 auto;
}

.page-home .guide-strip__intro {
  margin: 14px 0 20px;
  max-width: 56ch;
  font-size: 15px;
  line-height: 1.78;
  color: var(--smoke);
}

.page-home .guide-strip__body {
  margin-top: clamp(22px, 4vw, 40px);
  display: grid;
  gap: clamp(16px, 2.4vw, 28px);
  grid-template-columns: minmax(0, 1fr);
}

.page-home .guide-strip__figure {
  margin: 0;
}

@media (min-width: 960px) {
  .page-home .guide-strip__body {
    grid-template-columns: minmax(0, 0.72fr) minmax(0, 1.28fr);
    align-items: start;
  }
}

.page-home .timeline {
  list-style: none;
  margin: 0;
  padding: 2px 0 14px;
  display: grid;
  grid-auto-flow: column;
  grid-auto-columns: minmax(232px, 78%);
  gap: 14px;
  overflow-x: auto;
  scroll-snap-type: x mandatory;
  -webkit-overflow-scrolling: touch;
}

@media (min-width: 700px) {
  .page-home .timeline {
    grid-auto-columns: minmax(240px, 1fr);
  }
}

.page-home .timeline::-webkit-scrollbar {
  height: 4px;
}

.page-home .timeline::-webkit-scrollbar-track {
  background: var(--line-soft);
}

.page-home .timeline::-webkit-scrollbar-thumb {
  background: var(--bronze);
}

.page-home .timeline__item {
  scroll-snap-align: start;
  padding: 16px 16px 15px;
  background: var(--graphite);
  border: 1px solid var(--line);
  border-top: 2px solid var(--bronze);
  transition: border-color 0.25s var(--ease);
}

.page-home .timeline__item:hover,
.page-home .timeline__item:focus-within {
  border-color: var(--teal);
  border-top-color: var(--teal);
}

.page-home .timeline__ver {
  margin: 0 0 8px;
  font-family: var(--font-mono);
  font-size: 11.5px;
  letter-spacing: 0.12em;
  color: var(--coral);
}

.page-home .timeline__title {
  margin: 0 0 8px;
  font-family: var(--font-display);
  font-size: 1rem;
  font-weight: 700;
  line-height: 1.45;
  color: var(--paper);
}

.page-home .timeline__desc {
  margin: 0;
  font-size: 13.5px;
  line-height: 1.72;
  color: var(--smoke);
}

/* ---------- 服务范围对照 ---------- */
.page-home .scope {
  padding: clamp(40px, 7vw, 92px) var(--gutter);
  background: var(--paper);
  color: var(--ink);
}

.page-home .scope__inner {
  max-width: var(--maxw);
  margin: 0 auto;
  display: grid;
  gap: clamp(24px, 4vw, 48px);
  grid-template-columns: minmax(0, 1fr);
}

.page-home .scope .section-head__eyebrow {
  color: var(--deep-teal);
}

.page-home .scope .section-head__title {
  color: var(--ink);
}

.page-home .scope__intro {
  margin: 14px 0 22px;
  max-width: 52ch;
  font-size: 15px;
  line-height: 1.78;
  color: var(--home-ink-soft);
}

.page-home .scope-list {
  margin: 0 0 24px;
  border-top: 1px solid rgba(14, 20, 24, 0.16);
}

.page-home .scope-row {
  display: grid;
  grid-template-columns: 82px minmax(0, 1fr);
  gap: 14px;
  padding: 13px 0;
  border-bottom: 1px solid rgba(14, 20, 24, 0.16);
}

.page-home .scope-row dt {
  padding-top: 3px;
  font-family: var(--font-mono);
  font-size: 11.5px;
  letter-spacing: 0.1em;
  color: var(--deep-teal);
}

.page-home .scope-row dd {
  margin: 0;
  font-size: 14.5px;
  line-height: 1.72;
  color: var(--home-ink-soft);
}

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

.page-home .scope .btn--ghost {
  color: var(--deep-teal);
  border-color: rgba(15, 94, 90, 0.5);
}

.page-home .scope .btn--ghost:hover,
.page-home .scope .btn--ghost:focus-visible {
  background: var(--deep-teal);
  color: var(--warm);
  border-color: var(--deep-teal);
}

.page-home .scope__figure {
  margin: 0;
}

@media (min-width: 560px) {
  .page-home .scope-row {
    grid-template-columns: 106px minmax(0, 1fr);
    gap: 20px;
  }
}

@media (min-width: 900px) {
  .page-home .scope__inner {
    grid-template-columns: minmax(0, 1.15fr) minmax(0, 0.85fr);
    align-items: center;
  }
}

/* ---------- 合作入口 ---------- */
.page-home .contact-band {
  padding: clamp(40px, 7vw, 92px) var(--gutter);
  border-top: 1px solid var(--line-strong);
  background:
    radial-gradient(100% 120% at 84% 0%, rgba(255, 111, 94, 0.12), transparent 58%),
    linear-gradient(170deg, #131b20, var(--ink) 70%);
}

.page-home .contact-band__inner {
  max-width: var(--maxw);
  margin: 0 auto;
  display: grid;
  gap: clamp(26px, 4vw, 52px);
  grid-template-columns: minmax(0, 1fr);
}

.page-home .contact-band__intro {
  margin: 14px 0 18px;
  max-width: 52ch;
  font-size: 15px;
  line-height: 1.78;
  color: var(--smoke);
}

.page-home .contact-band__list {
  list-style: none;
  margin: 0 0 24px;
  padding: 0;
  display: grid;
  gap: 8px;
}

.page-home .contact-band__list li {
  position: relative;
  padding-left: 18px;
  font-size: 14px;
  line-height: 1.68;
  color: var(--smoke);
}

.page-home .contact-band__list li::before {
  content: "";
  position: absolute;
  left: 0;
  top: 0.72em;
  width: 7px;
  height: 1px;
  background: var(--teal);
}

.page-home .contact-band__facts {
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: 1px;
  background: var(--line-strong);
  border: 1px solid var(--line-strong);
}

.page-home .fact {
  margin: 0;
  padding: 18px 16px;
  background: var(--ink);
  display: flex;
  flex-direction: column;
  gap: 5px;
}

.page-home .fact__num {
  font-family: var(--font-mono);
  font-size: clamp(1.15rem, 3vw, 1.55rem);
  letter-spacing: 0.02em;
  color: var(--paper);
}

.page-home .fact__label {
  font-size: 12.5px;
  line-height: 1.55;
  color: var(--mist);
}

@media (min-width: 900px) {
  .page-home .contact-band__inner {
    grid-template-columns: minmax(0, 1.1fr) minmax(0, 0.9fr);
    align-items: start;
  }
}

/* ---------- 动效降级 ---------- */
@media (prefers-reduced-motion: reduce) {
  .page-home .entry__link,
  .page-home .theme-card,
  .page-home .timeline__item {
    transition: none;
  }

  .page-home .entry__link:hover,
  .page-home .entry__link:focus-visible,
  .page-home .theme-card:nth-child(2),
  .page-home .theme-card:nth-child(4),
  .page-home .theme-card:nth-child(6) {
    transform: none;
  }

  .page-home .timeline {
    scroll-behavior: auto;
  }
}