.page-home {
  --ph-line: rgba(201, 211, 221, 0.18);
  --ph-line-ink: rgba(11, 29, 51, 0.12);
  --ph-hero-top: calc(var(--header-h) + clamp(40px, 8vw, 96px));
}

/* ---------- 首屏分屏 ---------- */
.page-home .hero {
  position: relative;
  overflow: hidden;
  color: var(--mist);
  padding-block: var(--ph-hero-top) clamp(56px, 8vw, 104px);
  background:
    radial-gradient(90% 70% at 84% 6%, rgba(79, 209, 197, 0.18), transparent 62%),
    radial-gradient(70% 80% at 4% 96%, rgba(31, 78, 121, 0.55), transparent 60%),
    linear-gradient(168deg, var(--ink) 0%, var(--ink-2) 58%, var(--ink) 100%);
}

.page-home .hero::before {
  content: "";
  position: absolute;
  inset: 0;
  pointer-events: none;
  background-image: repeating-linear-gradient(116deg, rgba(201, 211, 221, 0.07) 0 1px, transparent 1px 28px);
}

.page-home .hero > .container {
  position: relative;
  z-index: 1;
}

.page-home .hero__inner {
  display: grid;
  gap: clamp(34px, 6vw, 60px);
  align-items: center;
}

.page-home .hero__index {
  margin: 0 0 20px;
  font-size: 0.72rem;
  letter-spacing: 0.18em;
  line-height: 1.6;
  color: var(--electric);
}

.page-home .hero__title {
  margin: 0 0 22px;
  font-size: clamp(2rem, 6.2vw, 4rem);
  line-height: 1.08;
  letter-spacing: -0.02em;
  font-weight: 800;
  color: var(--mist);
}

.page-home .hero__lede {
  margin: 0 0 30px;
  max-width: 34em;
  font-size: clamp(0.96rem, 1.4vw, 1.06rem);
  line-height: 1.85;
  color: rgba(244, 247, 250, 0.8);
}

.page-home .hero__actions {
  display: flex;
  flex-wrap: wrap;
  gap: 12px;
  margin-bottom: 36px;
}

.page-home .hero__facts {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(110px, 1fr));
  gap: 20px 24px;
  margin: 0;
  padding-top: 26px;
  border-top: 1px solid var(--ph-line);
}

.page-home .hero__fact dt {
  margin: 0 0 6px;
  font-size: clamp(1.3rem, 2.6vw, 1.66rem);
  font-weight: 700;
  line-height: 1.1;
  letter-spacing: -0.01em;
  color: var(--electric);
}

.page-home .hero__fact dd {
  margin: 0;
  font-size: 0.8rem;
  letter-spacing: 0.04em;
  color: rgba(201, 211, 221, 0.8);
}

.page-home .hero__figure {
  position: relative;
  margin: 0;
  aspect-ratio: 16 / 11;
  overflow: hidden;
  border: 1px solid var(--ph-line);
  border-radius: var(--radius);
  background: var(--ink-2);
  box-shadow: 0 34px 72px -46px rgba(0, 0, 0, 0.95);
}

.page-home .hero__img {
  position: absolute;
  inset: 0;
  width: 100%;
  height: 100%;
  object-fit: cover;
  opacity: 0.55;
  filter: saturate(0.9);
}

.page-home .hero__ridge {
  position: absolute;
  inset: 0;
  width: 100%;
  height: 100%;
}

.page-home .hero__ridge polyline {
  fill: none;
  stroke: var(--electric);
  stroke-width: 1.1;
  vector-effect: non-scaling-stroke;
}

.page-home .hero__ridge polyline:nth-child(1) { opacity: 0.9; }
.page-home .hero__ridge polyline:nth-child(2) { opacity: 0.52; }
.page-home .hero__ridge polyline:nth-child(3) { opacity: 0.26; }

.page-home .hero__caption {
  position: absolute;
  left: 16px;
  bottom: 14px;
  font-size: 0.68rem;
  letter-spacing: 0.16em;
  color: rgba(244, 247, 250, 0.7);
}

/* ---------- 通用章节头 ---------- */
.page-home .section-head {
  max-width: 42em;
  margin-bottom: clamp(30px, 5vw, 54px);
}

.page-home .section-head .h2 {
  margin: 12px 0 16px;
}

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

.page-home .link-arrow {
  display: inline-block;
  padding-bottom: 3px;
  font-size: 0.92rem;
  font-weight: 600;
  color: var(--indigo);
  text-decoration: none;
  border-bottom: 1px solid currentColor;
  transition: color 0.25s var(--ease);
}

.page-home .link-arrow:hover,
.page-home .link-arrow:focus-visible {
  color: var(--cinnabar);
}

.page-home .cap-foot {
  margin: 34px 0 0;
}

/* ---------- 三项能力 ---------- */
.page-home .capabilities__grid {
  display: grid;
  gap: 18px;
  grid-template-columns: 1fr;
}

.page-home .cap-card {
  display: flex;
  flex-direction: column;
  gap: 12px;
  padding: clamp(22px, 3vw, 30px);
  background: #ffffff;
  border: 1px solid var(--silver-2);
  border-radius: var(--radius);
  box-shadow: 0 18px 40px -34px rgba(11, 29, 51, 0.55);
}

.page-home .cap-card:nth-child(1) { border-top: 2px solid var(--indigo); }
.page-home .cap-card:nth-child(2) { border-top: 2px solid var(--terra); }
.page-home .cap-card:nth-child(3) { border-top: 2px solid var(--electric); }

.page-home .cap-card__idx {
  margin: 0;
  font-size: 0.7rem;
  letter-spacing: 0.2em;
  color: var(--indigo);
}

.page-home .cap-card .h3 {
  margin: 0;
  font-size: 1.12rem;
  line-height: 1.45;
  color: var(--ink);
}

.page-home .cap-card > p {
  margin: 0;
  font-size: 0.92rem;
  line-height: 1.8;
  color: rgba(11, 29, 51, 0.74);
}

.page-home .cap-card__list {
  margin: 6px 0 0;
  padding: 0;
  list-style: none;
  display: grid;
  gap: 9px;
}

.page-home .cap-card__list li {
  position: relative;
  padding-left: 20px;
  font-size: 0.86rem;
  line-height: 1.7;
  color: rgba(11, 29, 51, 0.66);
}

.page-home .cap-card__list li::before {
  content: "";
  position: absolute;
  left: 0;
  top: 0.72em;
  width: 12px;
  height: 1px;
  background: var(--terra);
}

/* ---------- 产品线轨道 ---------- */
.page-home .rail-section {
  overflow-x: clip;
}

.page-home .rail-section .section-head .h2,
.page-home .rail-section .section-head .lede {
  color: var(--mist);
}

.page-home .rail-section .section-head .lede {
  color: rgba(244, 247, 250, 0.74);
}

.page-home .rail-wrap {
  padding-inline: max(var(--gutter), calc((100% - var(--shell)) / 2));
}

.page-home .rail {
  display: grid;
  grid-auto-flow: column;
  grid-auto-columns: minmax(0, 76%);
  gap: 16px;
  margin: 0;
  padding: 4px 0 16px;
  list-style: none;
  overflow-x: auto;
  overscroll-behavior-x: contain;
  scroll-snap-type: x mandatory;
  scrollbar-width: thin;
  scrollbar-color: rgba(201, 211, 221, 0.4) transparent;
}

.page-home .rail-card {
  display: flex;
  flex-direction: column;
  gap: 10px;
  padding: 18px;
  scroll-snap-align: start;
  background: rgba(17, 42, 70, 0.75);
  border: 1px solid var(--ph-line);
  border-radius: var(--radius);
  transition: border-color 0.3s var(--ease), transform 0.3s var(--ease);
}

.page-home .rail-card:hover {
  border-color: rgba(79, 209, 197, 0.55);
  transform: translateY(-3px);
}

.page-home .rail-card__img {
  display: block;
  width: 100%;
  height: auto;
  aspect-ratio: 4 / 3;
  object-fit: cover;
  border-radius: 2px;
  margin-bottom: 6px;
  opacity: 0.86;
}

.page-home .rail-card__num {
  margin: 0;
  font-size: 0.7rem;
  letter-spacing: 0.2em;
  color: var(--electric);
}

.page-home .rail-card .h3 {
  margin: 0;
  font-size: 1.1rem;
  line-height: 1.4;
  color: var(--mist);
}

.page-home .rail-card > p:last-child {
  margin: 0;
  font-size: 0.87rem;
  line-height: 1.75;
  color: rgba(201, 211, 221, 0.76);
}

.page-home .rail-hint {
  margin: 2px 0 0;
  font-size: 0.72rem;
  letter-spacing: 0.14em;
  color: rgba(201, 211, 221, 0.5);
}

/* ---------- 动态与公告 ---------- */
.page-home .updates__grid {
  display: grid;
  gap: clamp(28px, 5vw, 56px);
  align-items: center;
}

.page-home .updates__media {
  margin: 0;
  overflow: hidden;
  border: 1px solid var(--silver);
  border-radius: var(--radius);
  box-shadow: 0 26px 54px -44px rgba(11, 29, 51, 0.7);
}

.page-home .updates__media img {
  display: block;
  width: 100%;
  height: 100%;
  aspect-ratio: 3 / 2;
  object-fit: cover;
}

.page-home .updates__body .h2 {
  margin: 12px 0 16px;
}

.page-home .updates__body .lede {
  margin: 0;
}

.page-home .updates__list {
  margin: 26px 0 30px;
  padding: 0;
  list-style: none;
  border-top: 1px solid var(--ph-line-ink);
}

.page-home .updates__list li {
  display: grid;
  gap: 6px;
  padding: 16px 0;
  border-bottom: 1px solid var(--ph-line-ink);
}

.page-home .updates__tag {
  font-size: 0.68rem;
  letter-spacing: 0.18em;
  color: var(--terra);
}

.page-home .updates__list li > p {
  margin: 0;
  font-size: 0.91rem;
  line-height: 1.78;
  color: rgba(11, 29, 51, 0.76);
}

/* ---------- 使用支持 ---------- */
.page-home .support__grid {
  display: grid;
  gap: clamp(30px, 5vw, 58px);
  align-items: center;
}

.page-home .support__copy .h2 {
  margin: 12px 0 16px;
}

.page-home .support__copy .lede {
  margin: 0;
}

.page-home .steps {
  margin: 26px 0 30px;
  padding: 0;
  list-style: none;
  display: grid;
}

.page-home .steps li {
  display: grid;
  grid-template-columns: 42px 1fr;
  gap: 14px;
  align-items: start;
  padding: 14px 0;
  border-bottom: 1px solid var(--ph-line-ink);
  font-size: 0.9rem;
  line-height: 1.75;
  color: rgba(11, 29, 51, 0.78);
}

.page-home .steps li:first-child {
  border-top: 1px solid var(--ph-line-ink);
}

.page-home .steps__num {
  padding-top: 2px;
  font-size: 0.74rem;
  letter-spacing: 0.12em;
  color: var(--cinnabar);
}

.page-home .support__media {
  margin: 0;
  overflow: hidden;
  border: 1px solid var(--silver);
  border-radius: var(--radius);
}

.page-home .support__media img {
  display: block;
  width: 100%;
  height: 100%;
  aspect-ratio: 3 / 2;
  object-fit: cover;
}

/* ---------- 联系与回拨 ---------- */
.page-home .contact-strip {
  color: var(--mist);
  background:
    radial-gradient(80% 120% at 88% 8%, rgba(79, 209, 197, 0.14), transparent 62%),
    linear-gradient(160deg, var(--ink-2) 0%, var(--ink) 100%);
}

.page-home .contact-strip__grid {
  display: grid;
  gap: clamp(28px, 5vw, 56px);
}

.page-home .contact-strip__copy .h2 {
  margin: 12px 0 16px;
  color: var(--mist);
}

.page-home .contact-strip__copy .lede {
  margin: 0 0 28px;
  color: rgba(244, 247, 250, 0.76);
}

.page-home .contact-strip__list {
  margin: 0;
  padding: 0;
  list-style: none;
  display: grid;
  gap: 18px;
}

.page-home .contact-strip__list li {
  display: grid;
  gap: 5px;
  padding-bottom: 16px;
  border-bottom: 1px solid var(--ph-line);
}

.page-home .contact-strip__list li:first-child {
  padding-top: 4px;
  border-top: 1px solid var(--ph-line);
}

.page-home .contact-strip__k {
  font-size: 0.68rem;
  letter-spacing: 0.2em;
  color: var(--electric);
}

.page-home .contact-strip__v {
  font-size: 0.94rem;
  line-height: 1.7;
  color: rgba(244, 247, 250, 0.88);
  overflow-wrap: anywhere;
}

/* ---------- 响应式 ---------- */
@media (min-width: 640px) {
  .page-home .rail {
    grid-auto-columns: minmax(0, 320px);
  }
}

@media (min-width: 900px) {
  .page-home .hero__inner {
    grid-template-columns: minmax(0, 1.02fr) minmax(0, 0.98fr);
    gap: clamp(40px, 5vw, 76px);
  }

  .page-home .capabilities__grid {
    grid-template-columns: repeat(3, minmax(0, 1fr));
    align-items: start;
    gap: 22px;
  }

  .page-home .cap-card:nth-child(2) { margin-top: 42px; }
  .page-home .cap-card:nth-child(3) { margin-top: 84px; }

  .page-home .updates__grid {
    grid-template-columns: minmax(0, 0.92fr) minmax(0, 1.08fr);
  }

  .page-home .support__grid {
    grid-template-columns: minmax(0, 1.04fr) minmax(0, 0.96fr);
  }

  .page-home .contact-strip__grid {
    grid-template-columns: minmax(0, 1fr) minmax(0, 0.92fr);
    align-items: start;
  }
}

@media (min-width: 1180px) {
  .page-home .hero__facts {
    grid-template-columns: repeat(3, minmax(0, 1fr));
    max-width: 30em;
  }
}

@media (prefers-reduced-motion: reduce) {
  .page-home .rail-card,
  .page-home .link-arrow {
    transition: none;
  }

  .page-home .rail-card:hover {
    transform: none;
  }
}