.page-home {
  --home-rail: 4px;
  --panel-pad: clamp(20px, 3vw, 36px);
  display: block;
  background: var(--ink);
  color: var(--paper-dim);
}

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

.page-home .num {
  font-family: var(--font-mono);
  font-variant-numeric: tabular-nums;
  letter-spacing: 0.06em;
  color: var(--paper);
}

/* ---------- 面包屑 ---------- */
.page-home .breadcrumbs {
  font-family: var(--font-mono);
  font-size: 12px;
  letter-spacing: 0.1em;
  color: var(--mist);
  margin-bottom: var(--gap-m);
}

.page-home .breadcrumbs__sep {
  margin-right: 8px;
  color: var(--cyan);
}

/* ---------- 首屏 ---------- */
.page-home .hero {
  position: relative;
  border-bottom: 1px solid var(--line);
  background:
    radial-gradient(120% 90% at 88% 8%, rgba(53, 240, 224, 0.10), transparent 60%),
    var(--ink);
}

.page-home .hero__grid {
  display: grid;
  grid-template-columns: 1fr;
  max-width: var(--maxw);
  margin-inline: auto;
  padding-inline: var(--gutter);
}

.page-home .hero__narrative {
  padding-block: clamp(40px, 7vw, 88px);
}

.page-home .hero__kicker {
  display: inline-block;
  font-family: var(--font-mono);
  font-size: 12px;
  letter-spacing: 0.14em;
  text-transform: uppercase;
  color: var(--cyan);
  border-left: 2px solid var(--cyan);
  padding-left: 10px;
  margin-bottom: 18px;
}

.page-home .hero__title {
  font-family: var(--font-display);
  font-weight: 900;
  letter-spacing: -0.03em;
  line-height: 1.06;
  font-size: clamp(38px, 8vw, 84px);
  color: var(--paper);
  margin: 0 0 22px;
}

.page-home .hero__title em {
  font-style: normal;
  color: var(--cyan);
  text-shadow: 0 0 28px rgba(53, 240, 224, 0.35);
}

.page-home .hero__lead {
  max-width: 42ch;
  font-size: var(--fs-body);
  line-height: 1.75;
  color: var(--paper-dim);
  margin: 0 0 30px;
}

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

.page-home .hero__cta {
  position: relative;
  overflow: visible;
}

.page-home .hero__cta::after {
  content: "";
  position: absolute;
  inset: -4px;
  border: 1px solid var(--cyan);
  opacity: 0;
  transition: opacity 320ms var(--ease);
  pointer-events: none;
}

.page-home .hero__cta:hover::after,
.page-home .hero__cta:focus-visible::after {
  opacity: 1;
  animation: home-pulse 1.8s var(--ease) infinite;
}

@keyframes home-pulse {
  0%, 100% { box-shadow: 0 0 0 0 rgba(53, 240, 224, 0.35); }
  50% { box-shadow: 0 0 0 8px rgba(53, 240, 224, 0); }
}

.page-home .hero__stats {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(140px, 1fr));
  gap: 1px;
  background: var(--line);
  border: 1px solid var(--line);
  margin: 0;
}

.page-home .hero__stat {
  background: var(--panel);
  padding: 14px 16px;
}

.page-home .hero__stat dt {
  font-family: var(--font-mono);
  font-size: 11px;
  letter-spacing: 0.12em;
  color: var(--mist);
  margin-bottom: 6px;
}

.page-home .hero__stat dd {
  margin: 0;
  font-size: 15px;
  color: var(--paper-dim);
}

.page-home .hero__stat dd .num {
  font-size: 20px;
  margin-right: 6px;
}

.page-home .hero__visual {
  position: relative;
  min-height: 300px;
  border-top: 1px solid var(--line);
  overflow: hidden;
}

.page-home .hero__media {
  position: absolute;
  inset: 0;
}

.page-home .hero__media img {
  width: 100%;
  height: 100%;
  object-fit: cover;
  filter: grayscale(0.35) contrast(1.15) brightness(0.62);
  display: block;
}

.page-home .hero__svg {
  position: relative;
  display: block;
  width: 100%;
  height: auto;
  padding: clamp(24px, 5vw, 48px) clamp(20px, 4vw, 44px) 40px;
  margin-top: auto;
  filter: drop-shadow(0 0 14px rgba(53, 240, 224, 0.12));
}

.page-home .hero__gridlines line {
  stroke: var(--line);
  stroke-width: 1;
}

.page-home .hero__pulse {
  fill: none;
  stroke-width: 1.6;
  stroke-linejoin: round;
}

.page-home .hero__pulse--a { stroke: url(#pulseFade); }
.page-home .hero__pulse--b { stroke: var(--violet); stroke-opacity: 0.65; stroke-dasharray: 4 5; }

.page-home .hero__ticks line {
  stroke: var(--mist);
  stroke-width: 1;
  opacity: 0.5;
}

.page-home .hero__svgtext {
  font-family: var(--font-mono);
  font-size: 11px;
  letter-spacing: 0.12em;
  fill: var(--mist);
}

.page-home .hero__annotation {
  position: absolute;
  left: 10px;
  bottom: 24px;
  color: var(--mist);
  font-family: var(--font-mono);
  font-size: 12px;
  letter-spacing: 0.1em;
}

/* ---------- 堆叠面板 ---------- */
.page-home .stack-section {
  padding-block: var(--section-gap);
  background: var(--ink);
}

.page-home .section-head {
  display: grid;
  grid-template-columns: auto 1fr;
  gap: clamp(12px, 2vw, 24px);
  align-items: start;
  padding-bottom: var(--gap-m);
  border-bottom: 1px solid var(--line);
  margin-bottom: var(--gap-l);
}

.page-home .section-head__index {
  font-family: var(--font-mono);
  font-size: 12px;
  letter-spacing: 0.16em;
  color: var(--cyan);
  padding-top: 8px;
}

.page-home .section-head__title {
  font-family: var(--font-display);
  font-weight: 900;
  letter-spacing: -0.025em;
  font-size: var(--fs-h2);
  line-height: 1.25;
  color: var(--paper);
  margin: 0 0 8px;
}

.page-home .section-head__note {
  margin: 0;
  font-size: 15px;
  color: var(--mist);
  max-width: 52ch;
}

.page-home .panels {
  display: grid;
  gap: 1px;
  background: var(--line);
  border: 1px solid var(--line);
  margin-bottom: var(--gap-l);
}

.page-home .panel {
  background: var(--panel);
  border: 0;
}

.page-home .panel--grid {
  background-image:
    linear-gradient(to right, rgba(42, 50, 56, 0.55) 1px, transparent 1px),
    linear-gradient(to bottom, rgba(42, 50, 56, 0.55) 1px, transparent 1px);
  background-size: 48px 48px;
  background-position: -1px -1px;
  background-color: var(--panel);
}

.page-home .panel__summary {
  display: grid;
  grid-template-columns: auto 1fr auto;
  align-items: center;
  gap: 14px;
  padding: var(--panel-pad);
  cursor: pointer;
  list-style: none;
  transition: background 240ms var(--ease);
}

.page-home .panel__summary::-webkit-details-marker { display: none; }

.page-home .panel__summary:hover,
.page-home .panel__summary:focus-visible {
  background: rgba(53, 240, 224, 0.05);
  outline: none;
}

.page-home .panel[open] > .panel__summary {
  background: rgba(15, 20, 24, 0.9);
  border-bottom: 1px solid var(--line);
}

.page-home .panel__num {
  font-family: var(--font-mono);
  font-size: 12px;
  letter-spacing: 0.14em;
  color: var(--cyan);
}

.page-home .panel__title {
  font-family: var(--font-display);
  font-weight: 700;
  font-size: clamp(17px, 2.2vw, 21px);
  line-height: 1.5;
  color: var(--paper);
  letter-spacing: -0.01em;
}

.page-home .panel__icon {
  position: relative;
  width: 16px;
  height: 16px;
  flex: none;
}

.page-home .panel__icon::before,
.page-home .panel__icon::after {
  content: "";
  position: absolute;
  background: var(--cyan);
  transition: transform 240ms var(--ease), opacity 240ms var(--ease);
}

.page-home .panel__icon::before { left: 0; top: 7px; width: 16px; height: 2px; }
.page-home .panel__icon::after { left: 7px; top: 0; width: 2px; height: 16px; }

.page-home .panel[open] .panel__icon::after { transform: scaleY(0); opacity: 0; }

.page-home .panel__body {
  padding: var(--panel-pad);
  max-width: 62ch;
}

.page-home .panel__body p {
  margin: 0 0 14px;
  line-height: 1.75;
  color: var(--paper-dim);
}

.page-home .panel__meta {
  display: flex;
  flex-wrap: wrap;
  gap: 10px;
}

.page-home .panel__meta .label {
  font-family: var(--font-mono);
  font-size: 12px;
  letter-spacing: 0.1em;
  color: var(--mist);
  border: 1px solid var(--line);
  padding: 4px 10px;
}

.page-home .panel__link {
  display: inline-block;
  font-family: var(--font-mono);
  font-size: 13px;
  letter-spacing: 0.06em;
  color: var(--cyan);
  text-decoration: none;
  border-bottom: 1px solid rgba(53, 240, 224, 0.4);
  padding-bottom: 2px;
}

.page-home .panel__link:hover { border-bottom-color: var(--cyan); }

/* ---------- 设备图 ---------- */
.page-home .figure { margin: 0; }

.page-home .figure__media {
  overflow: hidden;
  border: 1px solid var(--line);
  background: var(--card);
}

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

.page-home .figure__caption {
  margin-top: 12px;
  font-size: 13px;
  line-height: 1.7;
  color: var(--mist);
  max-width: 60ch;
}

.page-home .device-figure .figure__media img {
  filter: grayscale(0.2) contrast(1.08) brightness(0.85);
}

/* ---------- 横向数据条带 ---------- */
.page-home .band {
  position: relative;
  padding-block: clamp(48px, 7vw, 88px);
  border-top: 1px solid var(--line);
  border-bottom: 1px solid var(--line);
  background: var(--panel);
  overflow: hidden;
}

.page-home .band__bg {
  position: absolute;
  inset: 0;
  opacity: 0.24;
  pointer-events: none;
}

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

.page-home .band__inner {
  position: relative;
}

.page-home .band__head {
  max-width: var(--maxw);
  margin-inline: auto;
  padding-inline: var(--gutter);
  margin-bottom: var(--gap-l);
}

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

.page-home .band__title {
  font-family: var(--font-display);
  font-weight: 900;
  letter-spacing: -0.025em;
  font-size: var(--fs-h2);
  color: var(--paper);
  margin: 0 0 10px;
}

.page-home .band__hint {
  margin: 0;
  font-family: var(--font-mono);
  font-size: 12px;
  letter-spacing: 0.1em;
  color: var(--mist);
}

.page-home .band__rail {
  display: flex;
  gap: 1px;
  list-style: none;
  margin: 0;
  padding: 0 var(--gutter) 14px;
  overflow-x: auto;
  scroll-snap-type: x mandatory;
  -webkit-overflow-scrolling: touch;
  background: var(--line);
  border-top: 1px solid var(--line);
  border-bottom: 1px solid var(--line);
  cursor: grab;
  scrollbar-color: var(--cyan) var(--ink);
  scrollbar-width: thin;
}

.page-home .band__rail:active { cursor: grabbing; }

.page-home .band__rail:focus-visible {
  outline: 1px solid var(--cyan);
  outline-offset: 2px;
}

.page-home .band__rail::-webkit-scrollbar { height: 6px; }
.page-home .band__rail::-webkit-scrollbar-track { background: var(--ink); }
.page-home .band__rail::-webkit-scrollbar-thumb { background: var(--cyan); }

.page-home .band__item {
  flex: 0 0 78%;
  min-width: 250px;
  background: var(--panel);
  padding: clamp(20px, 3vw, 30px);
  scroll-snap-align: start;
  border-top: 2px solid transparent;
  transition: border-color 240ms var(--ease), background 240ms var(--ease);
}

.page-home .band__item:hover {
  background: var(--card);
  border-top-color: var(--cyan);
}

.page-home .band__num {
  font-size: clamp(38px, 6vw, 54px);
  font-weight: 700;
  line-height: 1;
  margin: 0 0 14px;
}

.page-home .band__cap {
  margin: 0;
  font-size: 14px;
  line-height: 1.7;
  color: var(--mist);
}

/* ---------- 资料速览 ---------- */
.page-home .quick {
  padding-block: var(--section-gap);
  background: var(--ink);
}

.page-home .quick__shell { position: relative; }

.page-home .quick__layout {
  display: grid;
  grid-template-columns: 1fr;
  gap: var(--gap-m);
  margin-bottom: var(--gap-l);
}

.page-home .card {
  background: var(--card);
  border: 1px solid var(--line);
  border-left: 2px solid var(--line);
  padding: var(--panel-pad);
  transition: border-left-color 240ms var(--ease), transform 240ms var(--ease);
}

.page-home .card:hover {
  border-left-color: var(--cyan);
  transform: translateX(2px);
}

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

.page-home .card__meta .tag {
  font-family: var(--font-mono);
  font-size: 11px;
  letter-spacing: 0.1em;
  color: var(--cyan);
  border: 1px solid var(--cyan);
  padding: 2px 8px;
}

.page-home .card__meta .tag--violet {
  color: var(--violet);
  border-color: var(--violet);
}

.page-home .card__meta .label {
  font-family: var(--font-mono);
  font-size: 11px;
  letter-spacing: 0.1em;
  color: var(--mist);
}

.page-home .card__title {
  font-family: var(--font-display);
  font-weight: 700;
  font-size: var(--fs-h3);
  line-height: 1.45;
  letter-spacing: -0.01em;
  color: var(--paper);
  margin: 0 0 10px;
}

.page-home .card__text {
  margin: 0 0 14px;
  font-size: 15px;
  line-height: 1.75;
  color: var(--paper-dim);
}

.page-home .quick__cost {
  font-family: var(--font-mono);
  font-size: 12px;
  letter-spacing: 0.08em;
  color: var(--mist);
  margin: 0;
  padding-top: 12px;
  border-top: 1px solid var(--line);
}

.page-home .quick__figure .figure__caption { font-size: 12px; }

.page-home .quick__cta {
  display: flex;
  flex-direction: column;
  gap: 16px;
  align-items: flex-start;
  padding: var(--panel-pad);
  border: 1px solid var(--line);
  background: var(--panel);
}

.page-home .quick__ctaText {
  margin: 0;
  max-width: 56ch;
  font-size: 15px;
  line-height: 1.75;
  color: var(--paper-dim);
}

/* ---------- 查阅场景 ---------- */
.page-home .scenes {
  padding-block: var(--section-gap);
  background: var(--panel);
  border-top: 1px solid var(--line);
}

.page-home .scenes__list {
  list-style: none;
  margin: 0 0 var(--gap-l);
  padding: 0;
  display: grid;
  gap: 1px;
  background: var(--line);
  border: 1px solid var(--line);
}

.page-home .scene {
  display: grid;
  grid-template-columns: 1fr;
  gap: 12px;
  background: var(--ink);
  padding: clamp(20px, 3vw, 32px);
  transition: background 240ms var(--ease);
}

.page-home .scene:hover { background: var(--card); }

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

.page-home .scene__title {
  font-family: var(--font-display);
  font-weight: 700;
  font-size: var(--fs-h3);
  line-height: 1.45;
  letter-spacing: -0.01em;
  color: var(--paper);
  margin: 0 0 8px;
}

.page-home .scene__text {
  margin: 0;
  font-size: 15px;
  line-height: 1.75;
  color: var(--paper-dim);
  max-width: 60ch;
}

.page-home .scene__links {
  display: flex;
  flex-wrap: wrap;
  gap: 14px;
}

.page-home .scene__links a {
  font-family: var(--font-mono);
  font-size: 13px;
  letter-spacing: 0.06em;
  color: var(--cyan);
  text-decoration: none;
  border-bottom: 1px solid rgba(53, 240, 224, 0.35);
  padding-bottom: 2px;
}

.page-home .scene__links a:hover { border-bottom-color: var(--cyan); }

.page-home .scenes__support {
  border-left: 2px solid var(--cyan);
  padding: 4px 0 4px 18px;
}

.page-home .scenes__support p {
  margin: 0;
  font-size: 15px;
  line-height: 1.75;
  color: var(--mist);
  max-width: 64ch;
}

.page-home .scenes__support a {
  color: var(--paper);
  text-decoration: none;
  border-bottom: 1px solid var(--line);
}

.page-home .scenes__support a:hover {
  color: var(--cyan);
  border-bottom-color: var(--cyan);
}

/* ---------- 显现动画 ---------- */
.page-home .reveal {
  opacity: 0;
  transform: translateY(12px);
  transition: opacity 320ms var(--ease), transform 320ms var(--ease);
}

.page-home .is-revealed {
  opacity: 1;
  transform: none;
}

@media (prefers-reduced-motion: reduce) {
  .page-home .reveal {
    opacity: 1;
    transform: none;
    transition: none;
  }
  .page-home .hero__cta:hover::after,
  .page-home .hero__cta:focus-visible::after {
    animation: none;
  }
}

/* ---------- 竖屏 tablet 起 ---------- */
@media (min-width: 720px) {
  .page-home .quick__layout {
    grid-template-columns: repeat(2, 1fr);
  }

  .page-home .card--tall {
    grid-row: span 2;
  }

  .page-home .scene {
    grid-template-columns: 90px 1fr auto;
    align-items: start;
    gap: clamp(16px, 2.5vw, 32px);
  }

  .page-home .scene__time {
    writing-mode: vertical-rl;
    letter-spacing: 0.28em;
    padding-top: 2px;
  }

  .page-home .scene__links {
    justify-content: flex-end;
  }

  .page-home .quick__cta {
    flex-direction: row;
    align-items: center;
    justify-content: space-between;
  }

  .page-home .band__item { flex-basis: 46%; }
}

/* ---------- 桌面 ---------- */
@media (min-width: 1024px) {
  .page-home .hero__grid {
    grid-template-columns: minmax(0, 1fr) minmax(0, 1fr);
    align-items: stretch;
    min-height: 78vh;
  }

  .page-home .hero__narrative {
    display: flex;
    flex-direction: column;
    justify-content: center;
    padding-block: clamp(64px, 7vw, 104px);
    padding-right: clamp(20px, 4vw, 56px);
  }

  .page-home .hero__visual {
    border-top: 0;
    border-left: 1px solid var(--line);
    min-height: 100%;
    display: flex;
    flex-direction: column;
    justify-content: flex-end;
  }

  .page-home .hero__svg {
    padding-top: clamp(56px, 9vw, 120px);
  }

  .page-home .quick__layout {
    grid-template-columns: 1.15fr 1fr 1fr;
    grid-auto-rows: minmax(0, auto);
  }

  .page-home .card--tall {
    grid-row: span 2;
    display: flex;
    flex-direction: column;
    justify-content: flex-start;
  }

  .page-home .quick__figure {
    grid-column: 2 / span 2;
  }

  .page-home .band__item { flex-basis: 30%; min-width: 280px; }

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

  .page-home .panel:nth-child(3) {
    grid-column: 1 / -1;
  }
}

@media (min-width: 1280px) {
  .page-home .band__item { flex-basis: 24%; }
  .page-home .panel__body { padding-top: calc(var(--panel-pad) - 4px); }
}