.page-home {
  --ph-gap: clamp(20px, 4vw, 48px);
  --ph-block: clamp(52px, 8vw, 100px);
  display: block;
  background: var(--c-void);
  color: var(--c-text);
  font-family: var(--font-body);
  overflow-x: clip;
}

/* ---------------- 首屏 ---------------- */
.page-home .hero {
  position: relative;
  padding-top: clamp(34px, 6vw, 76px);
  background-image:
    radial-gradient(1000px 520px at 80% -12%, rgba(122, 77, 255, .20), transparent 68%),
    radial-gradient(720px 420px at 4% 2%, rgba(43, 245, 216, .10), transparent 70%);
}

.page-home .hero::before {
  content: "";
  position: absolute;
  inset: 0;
  pointer-events: none;
  background-image: repeating-linear-gradient(
    to bottom,
    rgba(43, 245, 216, .05) 0,
    rgba(43, 245, 216, .05) 1px,
    transparent 1px,
    transparent 6px
  );
  -webkit-mask-image: linear-gradient(to bottom, #000 0%, transparent 72%);
  mask-image: linear-gradient(to bottom, #000 0%, transparent 72%);
  animation: ph-scan 10s linear infinite;
}

@keyframes ph-scan {
  0% { transform: translateY(-5px); }
  50% { transform: translateY(5px); }
  100% { transform: translateY(-5px); }
}

.page-home .hero-inner {
  position: relative;
  z-index: 1;
  display: grid;
  grid-template-columns: 1fr;
  gap: clamp(28px, 5vw, 44px);
}

.page-home .hero-copy {
  min-width: 0;
}

.page-home .hero-kicker {
  margin: 0 0 16px;
  font-family: var(--font-mono);
  font-size: 12.5px;
  letter-spacing: .16em;
  color: var(--c-cyan);
}

.page-home .hero-title {
  margin: 0;
  font-family: var(--font-head);
  font-weight: 800;
  font-size: clamp(32px, 7.2vw, 72px);
  line-height: 1.06;
  letter-spacing: .015em;
  color: var(--c-text);
}

.page-home .hero-title span {
  color: var(--c-cyan);
  text-shadow: 0 0 26px rgba(43, 245, 216, .30);
}

.page-home .hero-lead {
  max-width: 56ch;
  margin: clamp(18px, 2.4vw, 26px) 0 0;
  font-size: 16.5px;
  line-height: 1.78;
  color: var(--c-muted);
}

.page-home .hero-actions {
  display: flex;
  flex-wrap: wrap;
  gap: 12px;
  margin-top: clamp(24px, 3vw, 34px);
}

.page-home .hero-rail {
  min-width: 0;
  border-top: 1px solid var(--c-line);
  padding-top: 20px;
}

.page-home .rail-label {
  margin: 0 0 14px;
  font-family: var(--font-mono);
  font-size: 11.5px;
  letter-spacing: .2em;
  color: var(--c-muted);
}

.page-home .rail-list {
  list-style: none;
  margin: 0;
  padding: 0;
}

.page-home .rail-item + .rail-item {
  border-top: 1px solid var(--c-line);
}

.page-home .rail-link {
  display: grid;
  grid-template-columns: auto auto 1fr;
  align-items: center;
  gap: 12px;
  padding: 14px 4px;
  text-decoration: none;
  color: var(--c-muted);
  transition: color .28s var(--ease);
}

.page-home .rail-link:hover,
.page-home .rail-link:focus-visible {
  color: var(--c-text);
}

.page-home .rail-dot {
  width: 8px;
  height: 8px;
  border-radius: 50%;
  background: var(--c-line);
  transition: background-color .28s var(--ease), box-shadow .28s var(--ease);
}

.page-home .rail-item.is-current .rail-dot {
  background: var(--c-green);
  box-shadow: 0 0 0 4px rgba(53, 229, 122, .14);
  animation: ph-breathe 2s ease-in-out infinite;
}

@keyframes ph-breathe {
  0%, 100% { box-shadow: 0 0 0 4px rgba(53, 229, 122, .14); }
  50% { box-shadow: 0 0 0 9px rgba(53, 229, 122, .04); }
}

.page-home .rail-ver {
  font-size: 13px;
  letter-spacing: .06em;
}

.page-home .rail-item.is-current .rail-ver {
  color: var(--c-green);
}

.page-home .rail-name {
  font-size: 14px;
  line-height: 1.5;
}

.page-home .hero-visual {
  position: relative;
  z-index: 1;
  margin-top: clamp(30px, 4vw, 54px);
  padding-bottom: clamp(44px, 6vw, 84px);
}

.page-home .hero-visual figure {
  position: relative;
  margin: 0;
  border: 1px solid var(--c-line);
  overflow: hidden;
  background: var(--c-graphite);
  box-shadow: var(--shadow-panel);
}

.page-home .hero-visual img {
  display: block;
  width: 100%;
  height: auto;
  aspect-ratio: 16 / 9;
  object-fit: cover;
}

.page-home .hero-visual figure::after {
  content: "";
  position: absolute;
  inset: 0;
  pointer-events: none;
  background-image:
    linear-gradient(to bottom, rgba(5, 7, 12, 0) 42%, rgba(5, 7, 12, .78) 100%),
    repeating-linear-gradient(to right, rgba(43, 245, 216, .07) 0, rgba(43, 245, 216, .07) 1px, transparent 1px, transparent 5px);
}

/* ---------------- 章节通用 ---------------- */
.page-home .home-block {
  position: relative;
  padding: var(--ph-block) 0;
}

.page-home .home-block + .home-block {
  border-top: 1px solid var(--c-line);
}

.page-home .section-head {
  max-width: 62ch;
}

.page-home .eyebrow {
  margin: 0 0 14px;
  font-size: 11.5px;
  letter-spacing: .2em;
  color: var(--c-cyan);
}

.page-home .section-title {
  margin: 0;
  font-family: var(--font-head);
  font-weight: 800;
  font-size: clamp(24px, 4vw, 40px);
  line-height: 1.24;
  letter-spacing: .015em;
  color: var(--c-text);
}

.page-home .section-lead {
  margin: 16px 0 0;
  font-size: 16px;
  line-height: 1.78;
  color: var(--c-muted);
}

/* ---------------- 数据面板 ---------------- */
.page-home .stats-panel {
  margin-top: clamp(26px, 4vw, 42px);
}

.page-home .stats-visual {
  margin: 0;
  border: 1px solid var(--c-line);
  border-bottom: 0;
  overflow: hidden;
  background: var(--c-graphite);
}

.page-home .stats-visual img {
  display: block;
  width: 100%;
  height: auto;
  aspect-ratio: 2 / 1;
  object-fit: cover;
  opacity: .85;
}

.page-home .stats-grid {
  display: grid;
  grid-template-columns: 1fr;
  gap: 1px;
  background-color: var(--c-line);
  border: 1px solid var(--c-line);
}

.page-home .stat {
  margin: 0;
  padding: 22px 20px 20px;
  background-color: var(--c-graphite);
  transition: background-color .3s var(--ease);
}

.page-home .stat:hover {
  background-color: var(--c-indigo);
}

.page-home .stat > summary {
  display: block;
  position: relative;
  padding-right: 26px;
  list-style: none;
  cursor: pointer;
}

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

.page-home .stat > summary::after {
  content: "+";
  position: absolute;
  top: 0;
  right: 0;
  font-family: var(--font-mono);
  font-size: 15px;
  line-height: 1;
  color: var(--c-muted);
  transition: color .24s var(--ease);
}

.page-home .stat[open] > summary::after {
  content: "−";
  color: var(--c-cyan);
}

.page-home .stat-head {
  display: flex;
  align-items: baseline;
  gap: 6px;
}

.page-home .stat-num {
  font-size: clamp(36px, 8vw, 52px);
  font-weight: 700;
  line-height: 1;
  letter-spacing: -.02em;
  color: var(--c-text);
}

.page-home .stat-unit {
  font-family: var(--font-mono);
  font-size: 13px;
  color: var(--c-cyan);
}

.page-home .stat-name {
  display: block;
  margin-top: 12px;
  font-size: 13.5px;
  letter-spacing: .05em;
  color: var(--c-muted);
}

.page-home .stat-note {
  margin: 16px 0 0;
  padding-top: 14px;
  border-top: 1px dashed var(--c-line);
  font-size: 13.5px;
  line-height: 1.72;
  color: var(--c-muted);
}

/* ---------------- 服务主题带 ---------------- */
.page-home .bands-split {
  margin-top: clamp(26px, 4vw, 44px);
  display: grid;
  grid-template-columns: 1fr;
  gap: clamp(30px, 4vw, 50px);
}

.page-home .band-list {
  list-style: none;
  margin: 0;
  padding: 0;
}

.page-home .band {
  position: relative;
  display: grid;
  grid-template-columns: 2.4rem 1fr;
  gap: 18px;
  padding: 26px 0 26px 16px;
  border-top: 1px solid var(--c-line);
}

.page-home .band:last-child {
  border-bottom: 1px solid var(--c-line);
}

.page-home .band::before {
  content: "";
  position: absolute;
  left: 0;
  top: 0;
  bottom: 0;
  width: 2px;
  background-color: var(--c-cyan);
  transform: scaleY(0);
  transform-origin: top;
  transition: transform .32s var(--ease);
}

.page-home .band:hover::before,
.page-home .band:focus-within::before {
  transform: scaleY(1);
}

.page-home .band-index {
  font-size: 13px;
  letter-spacing: .08em;
  color: var(--c-cyan);
}

.page-home .band-main {
  min-width: 0;
}

.page-home .band-title {
  margin: 0;
  font-family: var(--font-head);
  font-weight: 700;
  font-size: clamp(19px, 2.4vw, 24px);
  line-height: 1.3;
  color: var(--c-text);
}

.page-home .band-text {
  margin: 10px 0 0;
  font-size: 15px;
  line-height: 1.75;
  color: var(--c-muted);
}

.page-home .band-link {
  display: inline-block;
  margin-top: 12px;
  font-size: 13.5px;
  letter-spacing: .04em;
  color: var(--c-cyan);
  text-decoration: none;
  border-bottom: 1px solid rgba(43, 245, 216, .35);
  padding-bottom: 2px;
  transition: border-color .26s var(--ease), color .26s var(--ease);
}

.page-home .band-link:hover,
.page-home .band-link:focus-visible {
  color: var(--c-violet-soft);
  border-color: var(--c-violet-soft);
}

.page-home .bands-media {
  min-width: 0;
}

.page-home .bands-media figure {
  margin: 0;
  border: 1px solid var(--c-line);
  overflow: hidden;
  background: var(--c-graphite);
}

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

.page-home .bands-note {
  margin: 18px 0 0;
  font-size: 13.5px;
  line-height: 1.75;
  color: var(--c-muted);
  border-left: 2px solid var(--c-violet);
  padding-left: 14px;
}

/* ---------------- 版本时间轴 ---------------- */
.page-home .version-grid {
  margin-top: clamp(28px, 4vw, 46px);
  display: grid;
  grid-template-columns: 1fr;
  gap: clamp(30px, 4vw, 52px);
}

.page-home .version-media {
  min-width: 0;
}

.page-home .version-media figure {
  margin: 0;
  border: 1px solid var(--c-line);
  overflow: hidden;
  background: var(--c-graphite);
}

.page-home .version-media img {
  display: block;
  width: 100%;
  height: auto;
  aspect-ratio: 1 / 1;
  object-fit: cover;
}

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

.page-home .vline::before {
  content: "";
  position: absolute;
  left: 7px;
  top: 10px;
  bottom: 10px;
  width: 1px;
  background-image: linear-gradient(to bottom, var(--c-cyan), var(--c-violet) 55%, var(--c-line));
}

.page-home .vline-item {
  position: relative;
  padding: 0 0 30px 36px;
}

.page-home .vline-item:last-child {
  padding-bottom: 0;
}

.page-home .vline-dot {
  position: absolute;
  left: 0;
  top: 4px;
  width: 15px;
  height: 15px;
  border-radius: 50%;
  border: 1px solid var(--c-line);
  background-color: var(--c-void);
  box-shadow: 0 0 0 4px rgba(53, 229, 122, 0);
  transition: box-shadow .3s var(--ease), border-color .3s var(--ease);
}

.page-home .vline-item.is-current .vline-dot {
  border-color: var(--c-green);
  animation: ph-node 2s ease-in-out infinite;
}

@keyframes ph-node {
  0%, 100% { box-shadow: 0 0 0 4px rgba(53, 229, 122, .12); }
  50% { box-shadow: 0 0 0 9px rgba(53, 229, 122, .03); }
}

.page-home .vline-meta {
  display: flex;
  align-items: center;
  gap: 12px;
  margin: 0 0 8px;
}

.page-home .vline-ver {
  font-size: 14px;
  letter-spacing: .08em;
  color: var(--c-muted);
}

.page-home .vline-item.is-current .vline-ver {
  color: var(--c-green);
}

.page-home .vline-title {
  margin: 0;
  font-family: var(--font-head);
  font-weight: 700;
  font-size: clamp(17px, 2.2vw, 21px);
  line-height: 1.34;
  color: var(--c-text);
}

.page-home .vline-text {
  margin: 8px 0 0;
  font-size: 15px;
  line-height: 1.75;
  color: var(--c-muted);
}

/* ---------------- 现场氛围 ---------------- */
.page-home .atmos-figure {
  position: relative;
  margin: 0;
  border: 1px solid var(--c-line);
  overflow: hidden;
  background: var(--c-graphite);
}

.page-home .atmos-figure img {
  display: block;
  width: 100%;
  height: auto;
  aspect-ratio: 16 / 9;
  object-fit: cover;
}

.page-home .atmos-caption {
  padding: 22px 20px 24px;
  border-top: 1px solid var(--c-line);
  background-image: linear-gradient(to bottom, var(--c-graphite), var(--c-void));
}

.page-home .atmos-k {
  margin: 0 0 12px;
  font-size: 11.5px;
  letter-spacing: .2em;
  color: var(--c-orange);
}

.page-home .atmos-caption h2 {
  margin: 0;
  font-family: var(--font-head);
  font-weight: 800;
  font-size: clamp(21px, 3.4vw, 34px);
  line-height: 1.26;
  color: var(--c-text);
}

.page-home .atmos-caption p {
  margin: 14px 0 0;
  max-width: 62ch;
  font-size: 15px;
  line-height: 1.78;
  color: var(--c-muted);
}

/* ---------------- 下一步 ---------------- */
.page-home .next-grid {
  margin-top: clamp(26px, 4vw, 40px);
  display: grid;
  grid-template-columns: 1fr;
  gap: 14px;
}

.page-home .next-item {
  display: block;
  padding: 24px 22px;
  border: 1px solid var(--c-line);
  background-color: var(--c-graphite);
  text-decoration: none;
  color: inherit;
  transition: transform .3s var(--ease), border-color .3s var(--ease), box-shadow .3s var(--ease);
}

.page-home .next-item:hover,
.page-home .next-item:focus-visible {
  transform: translateY(-2px);
  border-color: var(--c-cyan);
  box-shadow: var(--glow-cyan);
}

.page-home .next-k {
  display: block;
  font-size: 11.5px;
  letter-spacing: .18em;
  color: var(--c-cyan);
}

.page-home .next-t {
  display: block;
  margin-top: 12px;
  font-family: var(--font-head);
  font-weight: 700;
  font-size: 18px;
  line-height: 1.35;
  color: var(--c-text);
}

.page-home .next-d {
  display: block;
  margin-top: 10px;
  font-size: 14px;
  line-height: 1.72;
  color: var(--c-muted);
}

.page-home .next-tail {
  margin: 26px 0 0;
  font-size: 14px;
  line-height: 1.75;
  color: var(--c-muted);
}

.page-home .next-tail a {
  color: var(--c-cyan);
  text-decoration: none;
  border-bottom: 1px solid rgba(43, 245, 216, .35);
}

.page-home .next-tail a:hover,
.page-home .next-tail a:focus-visible {
  color: var(--c-violet-soft);
  border-color: var(--c-violet-soft);
}

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

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

  .page-home .next-grid {
    grid-template-columns: repeat(2, 1fr);
  }

  .page-home .atmos-caption {
    padding: 26px 28px 30px;
  }
}

@media (min-width: 900px) {
  .page-home .hero-inner {
    grid-template-columns: minmax(0, 7fr) minmax(0, 5fr);
    align-items: end;
    column-gap: clamp(32px, 5vw, 72px);
  }

  .page-home .hero-rail {
    border-top: 0;
    border-left: 1px solid var(--c-line);
    padding-top: 0;
    padding-left: clamp(20px, 3vw, 34px);
  }

  .page-home .bands-split {
    grid-template-columns: minmax(0, 7fr) minmax(0, 5fr);
    align-items: start;
  }

  .page-home .bands-media {
    margin-top: 26px;
  }

  .page-home .version-grid {
    grid-template-columns: minmax(0, 5fr) minmax(0, 7fr);
    align-items: start;
  }

  .page-home .atmos-figure {
    position: relative;
  }

  .page-home .atmos-caption {
    position: absolute;
    left: 0;
    right: 0;
    bottom: 0;
    border-top: 0;
    background-image: linear-gradient(to top, rgba(5, 7, 12, .94) 20%, rgba(5, 7, 12, .55) 70%, rgba(5, 7, 12, 0) 100%);
    padding: 70px 40px 34px;
  }
}

@media (min-width: 1024px) {
  .page-home .stats-grid {
    grid-template-columns: repeat(4, 1fr);
  }

  .page-home .next-grid {
    grid-template-columns: repeat(3, 1fr);
  }
}

@media (prefers-reduced-motion: reduce) {
  .page-home .hero::before,
  .page-home .rail-item.is-current .rail-dot,
  .page-home .vline-item.is-current .vline-dot {
    animation: none;
  }

  .page-home .next-item:hover,
  .page-home .next-item:focus-visible {
    transform: none;
  }
}