.page-home{
  --home-glow: rgba(59, 227, 208, 0.10);
  --home-panel: linear-gradient(160deg, rgba(20, 52, 58, 0.55), rgba(15, 26, 48, 0.88));
  position: relative;
  color: var(--silver);
  background:
    radial-gradient(circle at 16% 6%, var(--home-glow), transparent 44%),
    radial-gradient(circle at 84% 24%, rgba(27, 143, 158, 0.12), transparent 48%),
    var(--ink-900);
}

.page-home .wrap{
  width: 100%;
  max-width: var(--wrap);
  margin-inline: auto;
  padding-inline: var(--gutter);
}

.page-home .home-hero,
.page-home .home-paths,
.page-home .home-timeline,
.page-home .home-export,
.page-home .home-services{
  padding-block: clamp(52px, 8vw, 104px);
  position: relative;
}

.page-home .home-hero{
  padding-block: clamp(44px, 7vw, 88px) clamp(36px, 5vw, 64px);
  overflow: hidden;
}

.page-home .section-head{
  margin-bottom: clamp(26px, 4vw, 46px);
}

.page-home .sec-head-row{
  display: flex;
  align-items: center;
  gap: 14px;
  margin-bottom: 16px;
}

.page-home .sec-num{
  flex: none;
  display: inline-flex;
  align-items: center;
  justify-content: center;
  width: 44px;
  height: 44px;
  border: 2px solid var(--line-strong);
  border-radius: 12px;
  font-family: var(--font-mono);
  font-size: 0.95rem;
  font-weight: 700;
  letter-spacing: 0.02em;
  color: var(--cyan);
  background: rgba(15, 26, 48, 0.85);
  box-shadow: 4px 4px 0 rgba(6, 10, 24, 0.9);
}

.page-home h2{
  margin: 0 0 14px;
  font-size: clamp(1.6rem, 3.4vw, 2.5rem);
  font-weight: 900;
  letter-spacing: -0.025em;
  line-height: 1.16;
  color: var(--white);
}

.page-home .section-head .lede{
  margin: 0;
  max-width: 66ch;
  color: var(--silver);
}

/* ---------- 首屏 ---------- */
.page-home .hero-grid{
  display: grid;
  grid-template-columns: 1fr;
  gap: clamp(30px, 5vw, 56px);
  align-items: center;
}

.page-home .hero-copy h1{
  margin: 0 0 18px;
  font-size: clamp(2.2rem, 7vw, 4.4rem);
  font-weight: 900;
  line-height: 1.02;
  letter-spacing: -0.035em;
  color: var(--white);
  max-width: 13ch;
}

.page-home .hero-copy .lede{
  margin: 0;
  max-width: 46ch;
  font-size: clamp(1rem, 1.6vw, 1.1rem);
  line-height: 1.75;
  color: var(--silver);
}

.page-home .hero-actions{
  display: flex;
  flex-wrap: wrap;
  gap: 14px;
  margin-top: clamp(24px, 3vw, 34px);
}

.page-home .hero-facts{
  list-style: none;
  margin: clamp(26px, 4vw, 40px) 0 0;
  padding: 20px 0 0;
  border-top: 1px solid var(--line-soft);
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(118px, 1fr));
  gap: 16px 20px;
}

.page-home .hero-facts li{
  display: flex;
  flex-direction: column;
  gap: 3px;
}

.page-home .fact-num{
  font-family: var(--font-mono);
  font-size: clamp(1.3rem, 2.4vw, 1.6rem);
  font-weight: 700;
  letter-spacing: -0.02em;
  color: var(--cyan);
}

.page-home .fact-label{
  font-size: 0.78rem;
  letter-spacing: 0.04em;
  color: var(--mist);
}

.page-home .hero-visual{
  position: relative;
  display: flex;
  align-items: center;
  justify-content: center;
  min-height: 300px;
}

.page-home .starmap{
  position: absolute;
  top: 50%;
  left: 50%;
  width: min(122%, 560px);
  height: auto;
  transform: translate(-50%, -50%);
  color: rgba(59, 227, 208, 0.42);
  pointer-events: none;
}

.page-home .home-phone{
  position: relative;
  z-index: 1;
  width: min(80%, 320px);
  margin: 0;
  border: 2px solid var(--line-strong);
  border-radius: 28px;
  overflow: hidden;
  background: var(--ink-800);
  box-shadow: 10px 10px 0 rgba(6, 10, 24, 0.85);
}

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

/* ---------- 两条主线 ---------- */
.page-home .path-grid{
  display: grid;
  grid-template-columns: 1fr;
  gap: clamp(18px, 3vw, 28px);
}

.page-home .path-card{
  padding: clamp(22px, 3vw, 34px);
  display: flex;
  flex-direction: column;
  gap: 16px;
  border: 2px solid var(--line);
  border-radius: var(--radius-md);
  background: var(--home-panel);
  box-shadow: var(--shadow-hard);
}

.page-home .path-card h3{
  margin: 0;
  font-size: clamp(1.1rem, 2vw, 1.35rem);
  font-weight: 800;
  letter-spacing: -0.015em;
  color: var(--white);
  line-height: 1.35;
}

.page-home .path-card .btn{
  align-self: flex-start;
  margin-top: 4px;
}

.page-home .path-steps{
  list-style: none;
  margin: 0;
  padding: 0;
  display: grid;
  gap: 12px;
}

.page-home .path-steps li{
  display: grid;
  grid-template-columns: 34px 1fr;
  gap: 12px;
  align-items: start;
  font-size: 0.94rem;
  line-height: 1.65;
  color: var(--silver);
}

.page-home .step-n{
  display: block;
  padding: 2px 0;
  text-align: center;
  font-family: var(--font-mono);
  font-size: 0.75rem;
  color: var(--cyan);
  border: 1px solid var(--line-strong);
  border-radius: 8px;
}

/* ---------- 时间轴 ---------- */
.page-home .timeline-grid{
  display: grid;
  grid-template-columns: 1fr;
  gap: clamp(26px, 4vw, 48px);
  align-items: start;
}

.page-home .timeline{
  list-style: none;
  margin: 0;
  padding: 0;
  position: relative;
}

.page-home .timeline::before{
  content: "";
  position: absolute;
  left: 16px;
  top: 8px;
  bottom: 12px;
  width: 2px;
  background: linear-gradient(180deg, rgba(59, 227, 208, 0.18), rgba(27, 143, 158, 0.6));
}

.page-home .timeline-item{
  position: relative;
  padding: 0 0 clamp(22px, 3vw, 32px) 46px;
}

.page-home .timeline-item::before{
  content: "";
  position: absolute;
  left: 10px;
  top: 6px;
  width: 14px;
  height: 14px;
  border-radius: 50%;
  background: var(--ink-900);
  border: 2px solid var(--cyan-deep);
}

.page-home .timeline-item.is-current::before{
  background: var(--gold);
  border-color: var(--gold);
  box-shadow: 0 0 0 5px rgba(246, 185, 74, 0.16);
}

.page-home .timeline-round{
  display: block;
  margin-bottom: 6px;
  font-family: var(--font-mono);
  font-size: 0.74rem;
  letter-spacing: 0.16em;
  color: var(--mist);
}

.page-home .timeline-item.is-current .timeline-round{
  color: var(--gold);
}

.page-home .timeline-body h3{
  margin: 0 0 8px;
  font-size: clamp(1.05rem, 1.8vw, 1.25rem);
  font-weight: 800;
  letter-spacing: -0.01em;
  color: var(--white);
}

.page-home .timeline-body p{
  margin: 0 0 12px;
  font-size: 0.94rem;
  line-height: 1.7;
  color: var(--silver);
  max-width: 52ch;
}

.page-home .timeline-tags{
  display: flex;
  flex-wrap: wrap;
  gap: 8px;
}

.page-home .timeline-figure{
  margin: 0;
  border: 2px solid var(--line);
  border-radius: var(--radius-md);
  overflow: hidden;
  background: var(--ink-800);
  box-shadow: var(--shadow-hard);
}

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

.page-home .timeline-actions{
  display: flex;
  flex-wrap: wrap;
  gap: 14px;
  margin-top: clamp(24px, 3vw, 34px);
}

/* ---------- 高原换气带 ---------- */
.page-home .horizon{
  padding-block: clamp(18px, 3vw, 32px);
}

.page-home .horizon-frame{
  margin: 0;
  border: 2px solid var(--line);
  border-radius: var(--radius-lg);
  overflow: hidden;
  background: var(--ink-800);
}

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

.page-home .horizon-copy{
  display: grid;
  gap: 10px;
  padding-top: 18px;
  max-width: 68ch;
}

.page-home .horizon-copy .media-caption{
  margin: 0;
  font-family: var(--font-mono);
  font-size: 0.8rem;
  letter-spacing: 0.06em;
  color: var(--cyan);
}

.page-home .horizon-copy p{
  margin: 0;
  font-size: 0.96rem;
  line-height: 1.75;
  color: var(--silver);
}

/* ---------- 资料库导出 ---------- */
.page-home .data-band{
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(140px, 1fr));
  gap: 1px;
  margin-bottom: clamp(26px, 4vw, 44px);
  border: 2px solid var(--line);
  border-radius: var(--radius-md);
  background: var(--line);
  overflow: hidden;
}

.page-home .data-band-item{
  display: flex;
  flex-direction: column;
  gap: 6px;
  padding: clamp(16px, 2.4vw, 26px);
  background: var(--ink-700);
}

.page-home .data-band-num{
  font-family: var(--font-mono);
  font-size: clamp(1.4rem, 2.8vw, 2rem);
  font-weight: 700;
  letter-spacing: -0.02em;
  color: var(--white);
}

.page-home .data-band-label{
  font-size: 0.78rem;
  line-height: 1.45;
  letter-spacing: 0.02em;
  color: var(--mist);
}

.page-home .export-grid{
  display: grid;
  grid-template-columns: 1fr;
  gap: clamp(22px, 3.4vw, 36px);
  align-items: center;
}

.page-home .export-copy h3{
  margin: 0 0 12px;
  font-size: clamp(1.1rem, 2vw, 1.35rem);
  font-weight: 800;
  letter-spacing: -0.015em;
  color: var(--white);
  line-height: 1.4;
}

.page-home .export-copy p{
  margin: 0 0 16px;
  font-size: 0.96rem;
  line-height: 1.75;
  color: var(--silver);
  max-width: 52ch;
}

.page-home .export-formats{
  display: flex;
  gap: 10px;
  margin-bottom: 20px;
}

.page-home .export-figure{
  margin: 0;
  border: 2px solid var(--line);
  border-radius: var(--radius-md);
  overflow: hidden;
  background: var(--ink-800);
  box-shadow: var(--shadow-hard);
}

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

/* ---------- 手机端服务 ---------- */
.page-home .service-list{
  list-style: none;
  margin: 0;
  padding: 0;
  display: grid;
  grid-template-columns: 1fr;
  gap: 1px;
  border: 2px solid var(--line);
  border-radius: var(--radius-md);
  background: var(--line-soft);
  overflow: hidden;
}

.page-home .service-list li{
  display: grid;
  grid-template-columns: 36px 1fr;
  gap: 14px;
  align-items: start;
  padding: clamp(16px, 2.4vw, 22px) clamp(18px, 2.6vw, 26px);
  background: var(--ink-800);
}

.page-home .service-list li:last-child{
  grid-column: auto;
}

.page-home .service-n{
  font-family: var(--font-mono);
  font-size: 0.78rem;
  letter-spacing: 0.06em;
  color: var(--cyan);
  padding-top: 3px;
}

.page-home .service-list h3{
  margin: 0 0 6px;
  font-size: 1rem;
  font-weight: 800;
  letter-spacing: -0.01em;
  color: var(--white);
}

.page-home .service-list p{
  margin: 0;
  font-size: 0.9rem;
  line-height: 1.65;
  color: var(--silver);
}

.page-home .service-actions{
  display: flex;
  flex-wrap: wrap;
  gap: 14px;
  margin-top: clamp(24px, 3.4vw, 36px);
}

.page-home .service-tail{
  margin: clamp(22px, 3vw, 30px) 0 0;
  font-size: 0.9rem;
  line-height: 1.8;
  color: var(--mist);
  max-width: 70ch;
}

.page-home .service-tail a{
  color: var(--cyan);
  text-decoration: none;
  border-bottom: 1px solid rgba(59, 227, 208, 0.35);
}

.page-home .service-tail a:hover{
  color: var(--white);
  border-bottom-color: var(--white);
}

/* ---------- 章节跟随目录 ---------- */
.page-home .chapter-rail{
  position: fixed;
  top: 50%;
  right: 18px;
  z-index: 30;
  display: none;
  transform: translateY(-50%);
}

.page-home .chapter-rail ol{
  list-style: none;
  margin: 0;
  padding: 0;
  display: grid;
  gap: 2px;
}

.page-home .chapter-rail a{
  display: block;
  padding: 7px 12px 7px 14px;
  border-left: 2px solid var(--line);
  font-size: 0.74rem;
  letter-spacing: 0.06em;
  white-space: nowrap;
  color: var(--mist);
  text-decoration: none;
  transition: color 0.2s ease, border-color 0.2s ease;
}

.page-home .chapter-rail a:hover{
  color: var(--white);
}

.page-home .chapter-rail a[aria-current]{
  color: var(--cyan);
  border-left-color: var(--cyan);
}

/* ---------- 响应式 ---------- */
@media (min-width: 720px){
  .page-home .service-list{
    grid-template-columns: repeat(2, minmax(0, 1fr));
  }
  .page-home .service-list li:last-child{
    grid-column: 1 / -1;
  }
}

@media (min-width: 820px){
  .page-home .path-grid{
    grid-template-columns: repeat(2, minmax(0, 1fr));
  }
  .page-home .export-grid{
    grid-template-columns: minmax(0, 5fr) minmax(0, 7fr);
  }
}

@media (min-width: 900px){
  .page-home .timeline-grid{
    grid-template-columns: minmax(0, 1fr) minmax(0, 340px);
  }
}

@media (min-width: 960px){
  .page-home .hero-grid{
    grid-template-columns: minmax(0, 5fr) minmax(0, 7fr);
  }
  .page-home .hero-visual{
    min-height: 420px;
  }
}

@media (min-width: 1400px){
  .page-home .chapter-rail{
    display: block;
  }
}

@media (max-width: 480px){
  .page-home .hero-actions .btn,
  .page-home .service-actions .btn,
  .page-home .timeline-actions .btn{
    flex: 1 1 auto;
    text-align: center;
  }
  .page-home .path-card .btn{
    align-self: stretch;
    text-align: center;
  }
}

@media (prefers-reduced-motion: reduce){
  .page-home .chapter-rail a{
    transition: none;
  }
}
<<<END>>>