.page-home {
  --home-gap: 18px;
  background: var(--ink-900);
  color: var(--text-primary);
  overflow-x: hidden;
}

.page-home a:focus-visible,
.page-home button:focus-visible {
  outline: 2px solid var(--focus-500);
  outline-offset: 3px;
}

.page-home .section__kicker {
  margin: 0 0 12px;
  font-family: var(--font-mono);
  font-size: 12px;
  font-weight: 500;
  letter-spacing: 0.12em;
  color: var(--copper-300);
}

/* ---------- 首屏封面 ---------- */
.page-home .hero-cover {
  position: relative;
  isolation: isolate;
  overflow: hidden;
  padding: calc(var(--header-h) + 40px) 0 52px;
  border-bottom: 1px solid var(--hair);
}

.page-home .hero-cover__bg {
  position: absolute;
  inset: 0;
  z-index: -2;
}

.page-home .hero-cover__bg img {
  width: 100%;
  height: 100%;
  object-fit: cover;
  opacity: 0.4;
}

.page-home .hero-cover__glow {
  position: absolute;
  left: -12%;
  right: -12%;
  top: 44%;
  height: 220px;
  z-index: -1;
  background: linear-gradient(
    90deg,
    rgba(192, 138, 62, 0) 0%,
    rgba(192, 138, 62, 0.34) 38%,
    rgba(224, 179, 107, 0.16) 64%,
    rgba(192, 138, 62, 0) 100%
  );
  animation: home-sweep 16s ease-in-out infinite alternate;
}

@keyframes home-sweep {
  from { transform: translateX(-12px); }
  to { transform: translateX(12px); }
}

@media (prefers-reduced-motion: reduce) {
  .page-home .hero-cover__glow { animation: none; }
  .page-home .line-card,
  .page-home .hero-index__link { transition: none; }
}

.page-home .hero-cover__inner {
  display: grid;
  grid-template-columns: minmax(0, 1fr);
  gap: 36px;
}

.page-home .hero-cover__kicker {
  margin: 16px 0 14px;
  font-family: var(--font-mono);
  font-size: 12px;
  letter-spacing: 0.14em;
  color: var(--copper-300);
}

.page-home .hero-cover__title {
  margin: 0 0 20px;
  font-family: var(--font-heading);
  font-weight: 800;
  font-size: clamp(30px, 5.4vw, 54px);
  line-height: 1.14;
  letter-spacing: -0.01em;
  color: var(--text-primary);
}

.page-home .hero-cover__lede {
  margin: 0 0 28px;
  max-width: 34em;
  font-size: 17px;
  line-height: 1.8;
  color: var(--text-primary);
  opacity: 0.86;
}

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

.page-home .hero-cover__aside {
  display: flex;
  flex-direction: column;
  align-items: stretch;
  gap: 18px;
}

.page-home .hero-cover__stamp {
  font-family: var(--font-mono);
  font-weight: 200;
  font-size: clamp(84px, 15vw, 168px);
  line-height: 0.82;
  letter-spacing: 0.02em;
  color: rgba(224, 179, 107, 0.24);
  text-align: right;
}

.page-home .hero-index {
  list-style: none;
  margin: 0;
  padding: 0;
  border-top: 1px solid var(--hair);
}

.page-home .hero-index__link {
  display: grid;
  grid-template-columns: 96px minmax(0, 1fr);
  gap: 14px;
  align-items: baseline;
  padding: 14px 4px;
  border-bottom: 1px solid var(--hair);
  text-decoration: none;
  color: inherit;
  transition: transform 180ms ease, border-color 180ms ease;
}

.page-home .hero-index__link:hover {
  transform: translateY(-3px);
  border-bottom-color: var(--copper-300);
}

.page-home .hero-index__num {
  font-family: var(--font-mono);
  font-size: 13px;
  letter-spacing: 0.06em;
  color: var(--copper-300);
}

.page-home .hero-index__label {
  font-size: 14px;
  line-height: 1.6;
  color: var(--text-muted);
}

/* ---------- 四条服务线 ---------- */
.page-home .line-grid {
  display: grid;
  grid-template-columns: minmax(0, 1fr);
  gap: var(--home-gap);
}

.page-home .line-card {
  display: flex;
  flex-direction: column;
  gap: 10px;
  padding: 24px 20px 20px;
  transition: transform 200ms ease, box-shadow 200ms ease, border-color 200ms ease;
}

.page-home .line-card:hover,
.page-home .line-card:focus-within {
  transform: translateY(-4px);
  box-shadow: 0 16px 32px rgba(0, 0, 0, 0.34);
}

.page-home .line-card .card__num {
  margin: 0;
  font-family: var(--font-mono);
  font-size: 32px;
  font-weight: 300;
  letter-spacing: 0.06em;
  line-height: 1;
}

.page-home .line-card--copper .card__num { color: var(--copper-300); }
.page-home .line-card--celadon .card__num { color: var(--celadon-500); }
.page-home .line-card--cinnabar .card__num { color: var(--cinnabar-600); }

.page-home .line-card .card__title {
  margin: 0;
  font-size: 19px;
  font-weight: 800;
  line-height: 1.35;
}

.page-home .line-card .card__text {
  margin: 0;
  font-size: 15px;
  line-height: 1.8;
  color: var(--text-muted);
}

.page-home .line-card .card__meta {
  margin: 0;
  font-family: var(--font-mono);
  font-size: 12px;
  letter-spacing: 0.04em;
  color: var(--text-muted);
}

.page-home .line-card .link-more {
  margin-top: auto;
  padding-top: 8px;
}

/* ---------- 三套编号 ---------- */
.page-home .cross-grid {
  display: grid;
  grid-template-columns: minmax(0, 1fr);
  gap: 16px;
}

.page-home .cross-col {
  padding: 24px 20px 22px;
  background: var(--ink-700);
  border: 1px solid var(--hair);
  border-top-width: 3px;
  border-top-style: solid;
}

.page-home .cross-col--cinnabar { border-top-color: var(--cinnabar-600); }
.page-home .cross-col--copper { border-top-color: var(--copper-500); }
.page-home .cross-col--celadon { border-top-color: var(--celadon-500); }

.page-home .cross-col .tag {
  display: inline-block;
  margin-bottom: 14px;
}

.page-home .cross-col__title {
  margin: 0 0 10px;
  font-size: 19px;
  font-weight: 800;
  line-height: 1.4;
}

.page-home .cross-col__text {
  margin: 0;
  font-size: 15px;
  line-height: 1.85;
  color: var(--text-muted);
}

.page-home .cross-detail {
  display: grid;
  grid-template-columns: minmax(0, 1fr);
  gap: 28px;
  align-items: start;
  margin-top: 44px;
}

.page-home .cross-detail__heading {
  margin: 0 0 14px;
  font-size: 20px;
  font-weight: 800;
}

.page-home .cross-detail__copy {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  gap: 12px;
  margin: 20px 0 0;
}

.page-home .cross-detail__hint {
  font-size: 12.5px;
  line-height: 1.7;
  color: var(--text-muted);
}

.page-home .copy-chip {
  padding: 8px 14px;
  font-family: var(--font-mono);
  font-size: 12px;
  letter-spacing: 0.06em;
  color: var(--ink-900);
  background: var(--copper-300);
  border: 1px solid var(--copper-300);
  border-radius: var(--radius);
  cursor: pointer;
  transition: background 180ms ease, border-color 180ms ease;
}

.page-home .copy-chip:hover {
  background: var(--copper-500);
  border-color: var(--copper-500);
}

.page-home .copy-chip[data-copy-state="done"] {
  background: var(--celadon-500);
  border-color: var(--celadon-500);
}

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

/* ---------- 四步路径 ---------- */
.page-home .step-list {
  list-style: none;
  margin: 0;
  padding: 0;
  display: grid;
  grid-template-columns: minmax(0, 1fr);
  gap: 16px;
}

.page-home .step-card {
  padding: 22px 18px;
  background: linear-gradient(180deg, rgba(22, 50, 74, 0.9) 0%, rgba(12, 31, 49, 0.9) 100%);
  border: 1px solid var(--hair);
  border-left: 3px solid var(--copper-500);
}

.page-home .step-card__num {
  display: block;
  font-family: var(--font-mono);
  font-size: 26px;
  font-weight: 300;
  letter-spacing: 0.06em;
  color: var(--copper-300);
}

.page-home .step-card__title {
  margin: 10px 0 8px;
  font-size: 18px;
  font-weight: 800;
}

.page-home .step-card__text {
  margin: 0;
  font-size: 14.5px;
  line-height: 1.85;
  color: var(--text-muted);
}

.page-home .step-figure {
  margin: 32px 0 0;
}

/* ---------- 档期确定性 ---------- */
.page-home .assure {
  display: grid;
  grid-template-columns: minmax(0, 1fr);
  gap: 32px;
}

.page-home .assure__stat {
  margin: 16px 0 8px;
  display: flex;
  align-items: baseline;
  gap: 10px;
}

.page-home .assure__num {
  font-family: var(--font-mono);
  font-weight: 200;
  font-size: clamp(72px, 13vw, 140px);
  line-height: 0.9;
  color: var(--copper-300);
}

.page-home .assure__unit {
  font-size: 20px;
  font-weight: 800;
  letter-spacing: 0.04em;
}

.page-home .assure__note {
  margin: 0;
  font-size: 15px;
  line-height: 1.8;
  color: var(--text-muted);
}

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

.page-home .assure__item {
  padding: 20px 0;
  border-bottom: 1px solid var(--hair);
}

.page-home .assure__item-title {
  margin: 0 0 8px;
  font-size: 17px;
  font-weight: 800;
  color: var(--copper-300);
}

.page-home .assure__item-text {
  margin: 0;
  font-size: 15px;
  line-height: 1.85;
  color: var(--text-muted);
}

/* ---------- 持续更新（纸层） ---------- */
.page-home .updates {
  background: var(--paper-100);
  color: var(--ink-on-paper);
}

.page-home .updates .section__kicker {
  color: var(--cinnabar-600);
}

.page-home .updates .section__title {
  color: var(--ink-on-paper);
}

.page-home .updates .section__lede {
  color: rgba(16, 28, 40, 0.72);
}

.page-home .update-grid {
  display: grid;
  grid-template-columns: minmax(0, 1fr);
  gap: 28px;
  align-items: start;
}

.page-home .update-stack {
  display: grid;
  gap: 16px;
}

.page-home .track-card {
  padding: 22px 20px 20px;
  background: rgba(255, 255, 255, 0.62);
  border: 1px solid rgba(16, 28, 40, 0.16);
  border-left: 3px solid var(--copper-500);
}

.page-home .track-card--faq {
  border-left-color: var(--cinnabar-600);
}

.page-home .track-card__title {
  margin: 0 0 10px;
  font-size: 19px;
  font-weight: 800;
  color: var(--ink-on-paper);
}

.page-home .track-card__text {
  margin: 0 0 12px;
  font-size: 15px;
  line-height: 1.85;
  color: rgba(16, 28, 40, 0.76);
}

.page-home .track-card__list {
  list-style: none;
  margin: 0 0 14px;
  padding: 0;
}

.page-home .track-card__list li {
  position: relative;
  padding-left: 16px;
  margin-bottom: 6px;
  font-size: 14px;
  line-height: 1.8;
  color: rgba(16, 28, 40, 0.76);
}

.page-home .track-card__list li::before {
  content: "";
  position: absolute;
  left: 0;
  top: 0.72em;
  width: 8px;
  height: 1px;
  background: var(--copper-500);
}

.page-home .track-card .link-more {
  color: var(--ink-on-paper);
}

.page-home .update-figure {
  margin: 0;
  border: 1px solid rgba(16, 28, 40, 0.16);
}

.page-home .site-meta {
  margin-top: 40px;
  padding-top: 24px;
  border-top: 1px solid rgba(16, 28, 40, 0.16);
}

.page-home .site-meta .meta-list__key {
  color: rgba(16, 28, 40, 0.58);
  font-family: var(--font-mono);
  font-size: 12px;
  letter-spacing: 0.06em;
}

.page-home .site-meta .meta-list__val {
  color: var(--ink-on-paper);
  font-size: 15px;
}

/* ---------- 收尾条 ---------- */
.page-home .cta-strip {
  background: var(--ink-800);
  border-top: 1px solid var(--hair-strong);
}

.page-home .cta-strip__inner {
  display: flex;
  flex-direction: column;
  align-items: flex-start;
  gap: 18px;
}

.page-home .cta-strip__text {
  margin: 0;
  max-width: 46em;
  font-size: 16px;
  line-height: 1.8;
  color: var(--text-primary);
}

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

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

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

@media (min-width: 860px) {
  .page-home .cross-grid {
    grid-template-columns: repeat(3, minmax(0, 1fr));
  }

  .page-home .cross-col:nth-child(2) { margin-top: 18px; }
  .page-home .cross-col:nth-child(3) { margin-top: 36px; }

  .page-home .cross-detail {
    grid-template-columns: minmax(0, 1fr) minmax(0, 1fr);
    gap: 48px;
  }

  .page-home .cta-strip__inner {
    flex-direction: row;
    align-items: center;
    justify-content: space-between;
    gap: 32px;
  }
}

@media (min-width: 900px) {
  .page-home .assure {
    grid-template-columns: minmax(0, 4fr) minmax(0, 7fr);
    gap: 56px;
  }

  .page-home .update-grid {
    grid-template-columns: minmax(0, 7fr) minmax(0, 5fr);
    gap: 40px;
  }
}

@media (min-width: 1000px) {
  .page-home .hero-cover {
    padding: calc(var(--header-h) + 64px) 0 72px;
  }

  .page-home .hero-cover__inner {
    grid-template-columns: minmax(0, 5fr) minmax(0, 3fr);
    align-items: end;
    gap: 56px;
  }
}

@media (min-width: 1080px) {
  .page-home .line-grid {
    grid-template-columns: repeat(4, minmax(0, 1fr));
  }

  .page-home .step-list {
    grid-template-columns: repeat(4, minmax(0, 1fr));
  }
}
</main>