/* 知数官网首页 · 真实工作过程作为主视觉 */

html { overflow-x: clip; }

.home-page {
  --home-paper: oklch(0.965 0.015 86);
  --home-paper-light: oklch(0.986 0.008 88);
  --home-ink: oklch(0.205 0.024 294);
  --home-muted: oklch(0.46 0.025 294);
  --home-purple: oklch(0.535 0.215 292);
  --home-purple-deep: oklch(0.405 0.18 292);
  --home-acid: oklch(0.87 0.19 107);
  --home-line: color-mix(in oklab, var(--home-ink) 18%, transparent);
  background: var(--home-paper);
  color: var(--home-ink);
  font-family: "Noto Sans SC", "PingFang SC", "Microsoft YaHei", sans-serif;
  line-height: 1.72;
  overflow-x: clip;
}

.home-page .wrap { --wrap: 82rem; }
.home-page h1,
.home-page h2,
.home-page h3 { color: var(--home-ink); }
.home-page .btn-primary::after { content: none; }

.home-nav {
  background: var(--home-paper);
  color: var(--home-ink);
}

.home-nav.is-scrolled {
  border-bottom-color: var(--home-line);
  box-shadow: 0 10px 32px color-mix(in oklab, var(--home-ink) 5%, transparent);
}

.home-nav .nav-inner { height: 4.75rem; }
.home-nav .wordmark { align-items: center; gap: 0.7rem; }
.home-nav .wordmark-logo { width: 2.5rem; height: 2.5rem; }
.wordmark-stack { display: grid; gap: 0.05rem; }
.home-nav .wordmark-cn { font-size: 1.05rem; line-height: 1; }
.home-nav .wordmark-latin {
  color: var(--home-muted);
  font-size: 0.54rem;
  line-height: 1;
  letter-spacing: 0.19em;
}
.home-nav .nav-links a { color: var(--home-muted); font-size: 0.875rem; }
.home-nav .btn-primary {
  background: var(--home-ink);
  border-radius: 999px;
  padding-inline: 1.3rem;
}
.home-nav .btn-primary:hover { background: var(--home-purple-deep); }

.home-hero {
  position: relative;
  isolation: isolate;
  min-height: min(54rem, calc(100svh - 4.75rem));
  padding-block: clamp(4.5rem, 8vw, 8rem) clamp(5rem, 9vw, 8.5rem);
  border-bottom: 1px solid var(--home-line);
}

.hero-grain {
  position: absolute;
  z-index: -1;
  inset: 0;
  opacity: 0.45;
  background-image:
    radial-gradient(circle at 9% 18%, color-mix(in oklab, var(--home-purple) 13%, transparent) 0 1px, transparent 1.5px),
    linear-gradient(115deg, transparent 0 61%, color-mix(in oklab, var(--home-purple) 6%, transparent) 61% 77%, transparent 77%);
  background-size: 13px 13px, auto;
  mask-image: linear-gradient(to bottom, black, transparent 92%);
}

.home-hero-grid {
  display: grid;
  grid-template-columns: minmax(0, 5fr) minmax(32rem, 7fr);
  align-items: center;
  gap: clamp(3rem, 6vw, 7rem);
}

.home-hero-copy { position: relative; z-index: 2; }
.signal-line {
  display: flex;
  flex-wrap: wrap;
  gap: 0.5rem 1.2rem;
  margin-bottom: clamp(1.7rem, 4vw, 3rem);
  font-family: var(--mono);
  font-size: 0.7rem;
  letter-spacing: 0.08em;
  color: var(--home-muted);
  text-transform: uppercase;
}
.signal-line span { display: inline-flex; align-items: center; gap: 0.45rem; }
.signal-line span::before {
  content: "";
  width: 0.35rem;
  height: 0.35rem;
  border-radius: 50%;
  background: var(--home-purple);
}

.home-hero h1 {
  max-width: 8.3em;
  font-size: clamp(3rem, 5.3vw, 5.75rem);
  line-height: 1.08;
  letter-spacing: -0.04em;
}
.home-hero h1 em {
  color: var(--home-purple-deep);
  font-family: var(--serif-latin), var(--serif);
  font-style: italic;
  font-weight: 500;
}
.home-hero-lead {
  max-width: 39rem;
  margin-top: clamp(1.75rem, 3vw, 2.6rem);
  color: var(--home-muted);
  font-size: clamp(1rem, 1.35vw, 1.17rem);
  line-height: 1.85;
}
.home-hero-actions {
  display: flex;
  align-items: center;
  flex-wrap: wrap;
  gap: 1.2rem 1.8rem;
  margin-top: 2.2rem;
}
.btn-large {
  min-height: 3.35rem;
  border-radius: 999px;
  padding-inline: 1.55rem;
  background: var(--home-purple);
  box-shadow: 0 10px 25px color-mix(in oklab, var(--home-purple) 20%, transparent);
}
.btn-large:hover { background: var(--home-purple-deep); }
.play-mark { font-size: 0.68rem; }
.text-link {
  color: var(--home-ink);
  font-weight: 600;
  text-decoration-color: color-mix(in oklab, var(--home-ink) 35%, transparent);
  text-underline-offset: 0.35rem;
}
.text-link span { display: inline-block; transition: translate 0.25s var(--ease); }
.text-link:hover span { translate: 0.18rem 0.18rem; }

.hero-facts {
  display: grid;
  grid-template-columns: repeat(3, minmax(0, 1fr));
  gap: 1rem;
  margin: clamp(3rem, 6vw, 5.2rem) 0 0;
  padding-top: 1.1rem;
  border-top: 1px solid var(--home-line);
}
.hero-facts div { min-width: 0; }
.hero-facts dt {
  margin-bottom: 0.18rem;
  color: var(--home-purple-deep);
  font-family: var(--mono);
  font-size: 0.66rem;
  letter-spacing: 0.08em;
}
.hero-facts dd {
  margin: 0;
  color: var(--home-muted);
  font-size: 0.78rem;
  white-space: nowrap;
}

.product-stage {
  position: relative;
  margin: 0;
  padding: 3.1rem 0 1.4rem 2.7rem;
}
.product-stage::before {
  content: "";
  position: absolute;
  inset: 6.5rem -11vw -3rem 21%;
  z-index: -1;
  background: var(--home-purple);
  clip-path: polygon(9% 0, 100% 0, 91% 100%, 0 86%);
}
.stage-index {
  position: absolute;
  top: 0;
  right: 0;
  font-family: var(--mono);
  font-size: 0.65rem;
  letter-spacing: 0.11em;
  color: var(--home-muted);
}
.stage-frame {
  position: relative;
  overflow: hidden;
  background: oklch(0.155 0.02 294);
  border: 1px solid color-mix(in oklab, var(--home-ink) 42%, transparent);
  box-shadow:
    0 2.7rem 5rem color-mix(in oklab, var(--home-ink) 24%, transparent),
    1rem 1rem 0 color-mix(in oklab, var(--home-acid) 76%, var(--home-paper));
  transform: rotate(0.6deg);
}
.stage-frame::after {
  content: "";
  position: absolute;
  inset: 0;
  pointer-events: none;
  box-shadow: inset 0 0 0 1px color-mix(in oklab, white 13%, transparent);
}
.stage-frame img { display: block; width: 100%; height: auto; }
.product-stage figcaption {
  display: grid;
  grid-template-columns: auto 1fr;
  gap: 1rem;
  align-items: baseline;
  margin: 1.5rem 0 0 1.4rem;
}
.product-stage figcaption span {
  color: var(--home-purple-deep);
  font-family: var(--mono);
  font-size: 0.67rem;
  letter-spacing: 0.08em;
}
.product-stage figcaption strong { font-size: 0.9rem; font-weight: 500; }
.stage-stamp {
  position: absolute;
  right: -1.2rem;
  top: 1.2rem;
  padding: 0.45rem 0.75rem;
  background: var(--home-acid);
  border: 1px solid var(--home-ink);
  color: var(--home-ink);
  font-family: var(--mono);
  font-size: 0.64rem;
  letter-spacing: 0.08em;
  transform: rotate(3deg);
}

.format-rail {
  background: var(--home-ink);
  color: var(--home-paper-light);
  border-bottom: 1px solid color-mix(in oklab, var(--home-paper-light) 15%, transparent);
}
.format-rail-inner {
  min-height: 5.2rem;
  display: grid;
  grid-template-columns: auto 1fr;
  align-items: center;
  gap: 2.5rem;
}
.format-label {
  color: color-mix(in oklab, var(--home-paper-light) 58%, transparent);
  font-size: 0.78rem;
}
.format-rail ul {
  display: flex;
  justify-content: space-between;
  gap: 1.2rem;
  margin: 0;
  padding: 0;
  list-style: none;
  font-family: var(--mono);
  font-size: 0.78rem;
}
.format-rail li { white-space: nowrap; }

.harness-section {
  position: relative;
  padding-block: clamp(6rem, 10vw, 10rem);
  overflow: hidden;
  background: var(--home-paper-light);
}
.harness-section::after {
  content: "DATA AGENT";
  position: absolute;
  right: -0.03em;
  bottom: -0.31em;
  color: color-mix(in oklab, var(--home-purple) 5%, transparent);
  font-family: var(--mono);
  font-size: clamp(6rem, 17vw, 18rem);
  font-weight: 700;
  line-height: 1;
  letter-spacing: -0.08em;
  pointer-events: none;
}
.harness-grid {
  position: relative;
  z-index: 1;
  display: grid;
  grid-template-columns: minmax(20rem, 0.82fr) minmax(0, 1.18fr);
  gap: clamp(4rem, 10vw, 10rem);
  align-items: start;
}
.harness-grid header > h2 {
  font-size: clamp(2.7rem, 4.9vw, 5.3rem);
  line-height: 1.14;
  letter-spacing: -0.04em;
}
.harness-grid header > h2 em {
  color: var(--home-purple-deep);
  font-family: var(--serif-latin), var(--serif);
  font-style: italic;
  font-weight: 500;
}
.harness-grid header > p:last-child {
  max-width: 36rem;
  margin-top: 1.7rem;
  color: var(--home-muted);
}
.harness-list {
  margin: 0;
  padding: 0;
  border-top: 1px solid var(--home-line);
  list-style: none;
}
.harness-list li {
  display: grid;
  grid-template-columns: 8.5rem 1fr;
  gap: 1.5rem;
  align-items: baseline;
  padding-block: 1.7rem;
  border-bottom: 1px solid var(--home-line);
}
.harness-list span {
  color: var(--home-purple-deep);
  font-family: var(--mono);
  font-size: 0.67rem;
  letter-spacing: 0.06em;
}
.harness-list strong {
  font-family: var(--serif);
  font-size: clamp(1.1rem, 1.7vw, 1.45rem);
  font-weight: 600;
  line-height: 1.5;
}

.remote-section {
  position: relative;
  padding-block: clamp(5.5rem, 9vw, 8.5rem);
  overflow: hidden;
  border-top: 1px solid var(--home-line);
  background: color-mix(in oklab, var(--home-purple) 5%, var(--home-paper));
}
.remote-section::before {
  content: "";
  position: absolute;
  inset: 0 0 auto;
  height: 0.35rem;
  background: linear-gradient(90deg, var(--home-purple) 0 24%, var(--home-acid) 24% 31%, transparent 31%);
}
.remote-grid {
  display: grid;
  grid-template-columns: minmax(20rem, 1.05fr) minmax(20rem, 0.58fr);
  gap: clamp(4rem, 9vw, 9rem);
  align-items: center;
}
.remote-copy h2 {
  max-width: 12em;
  font-size: clamp(2.6rem, 4.4vw, 4.8rem);
  line-height: 1.15;
  letter-spacing: -0.045em;
}
.remote-copy h2 em {
  color: var(--home-purple-deep);
  font-family: var(--serif-latin), var(--serif);
  font-style: italic;
  font-weight: 500;
}
.remote-lead {
  max-width: 42rem;
  margin-top: 1.8rem;
  color: var(--home-muted);
  font-size: 1rem;
}
.remote-capabilities {
  margin: 2.4rem 0 0;
  border-top: 1px solid var(--home-line);
}
.remote-capabilities div {
  display: grid;
  grid-template-columns: 5.5rem 1fr;
  gap: 1.5rem;
  padding-block: 1.15rem;
  border-bottom: 1px solid var(--home-line);
}
.remote-capabilities dt {
  color: var(--home-purple-deep);
  font-family: var(--mono);
  font-size: 0.69rem;
  letter-spacing: 0.08em;
}
.remote-capabilities dd {
  margin: 0;
  color: var(--home-muted);
  font-size: 0.86rem;
}
.remote-note {
  max-width: 43rem;
  margin-top: 1.4rem;
  padding-left: 1rem;
  border-left: 3px solid var(--home-purple);
  color: var(--home-muted);
  font-size: 0.76rem;
  line-height: 1.7;
}
.remote-note strong { color: var(--home-ink); }
.remote-visual {
  position: relative;
  justify-self: center;
  width: min(100%, 23rem);
  margin: 0;
  padding: 2.6rem 2.2rem 1.2rem;
}
.remote-visual::before {
  content: "DATA\A REMOTE";
  position: absolute;
  left: -4.4rem;
  top: 18%;
  z-index: 0;
  color: color-mix(in oklab, var(--home-purple) 10%, transparent);
  font-family: var(--mono);
  font-size: clamp(2.5rem, 5.4vw, 5.6rem);
  font-weight: 700;
  line-height: 0.82;
  letter-spacing: -0.08em;
  white-space: pre;
  transform: rotate(-90deg) translateX(-50%);
  transform-origin: left top;
}
.phone-frame {
  position: relative;
  z-index: 1;
  padding: 0.58rem;
  border: 1px solid color-mix(in oklab, white 16%, transparent);
  border-radius: 2.7rem;
  background: oklch(0.13 0.018 294);
  box-shadow:
    0 2.8rem 5rem color-mix(in oklab, var(--home-ink) 28%, transparent),
    1.1rem 1.1rem 0 var(--home-acid);
}
.phone-frame::before {
  content: "";
  position: absolute;
  z-index: 2;
  top: 0.88rem;
  left: 50%;
  width: 4.2rem;
  height: 1rem;
  border-radius: 999px;
  background: oklch(0.13 0.018 294);
  translate: -50% 0;
}
.phone-frame img {
  display: block;
  width: 100%;
  height: auto;
  border-radius: 2.15rem;
}
.remote-orbit {
  position: absolute;
  z-index: 3;
  padding: 0.52rem 0.75rem;
  border: 1px solid var(--home-ink);
  background: var(--home-paper-light);
  color: var(--home-ink);
  font-family: var(--mono);
  font-size: 0.65rem;
  letter-spacing: 0.06em;
  box-shadow: 0.35rem 0.35rem 0 color-mix(in oklab, var(--home-purple) 35%, transparent);
}
.remote-orbit::before { content: "●"; margin-right: 0.45rem; color: var(--home-purple); }
.remote-orbit-top { top: 12%; right: -1.4rem; transform: rotate(2deg); }
.remote-orbit-bottom { bottom: 13%; left: -1.5rem; transform: rotate(-2deg); }
.remote-visual figcaption {
  position: relative;
  z-index: 1;
  display: flex;
  justify-content: space-between;
  gap: 1rem;
  margin-top: 1.7rem;
  font-size: 0.72rem;
}
.remote-visual figcaption span { color: var(--home-purple-deep); font-family: var(--mono); }
.remote-visual figcaption strong { font-weight: 500; }

.demo-section {
  position: relative;
  padding-block: clamp(6rem, 10vw, 10rem);
  background: var(--home-ink);
  color: var(--home-paper-light);
}
.demo-section::before {
  content: "";
  position: absolute;
  top: 4rem;
  right: 0;
  width: 22vw;
  height: 1px;
  background: var(--home-acid);
}
.editorial-head {
  display: grid;
  grid-template-columns: minmax(0, 1.6fr) minmax(18rem, 0.65fr);
  gap: clamp(2rem, 8vw, 8rem);
  align-items: end;
  margin-bottom: clamp(3rem, 6vw, 5.5rem);
}
.section-kicker {
  margin-bottom: 1.15rem;
  color: var(--home-purple-deep);
  font-family: var(--mono);
  font-size: 0.67rem;
  letter-spacing: 0.12em;
}
.editorial-head .section-kicker { color: var(--home-acid); }
.editorial-head h2 {
  color: var(--home-paper-light);
  font-size: clamp(2.5rem, 5vw, 5.3rem);
  line-height: 1.12;
  letter-spacing: -0.035em;
}
.editorial-head > p {
  color: color-mix(in oklab, var(--home-paper-light) 62%, transparent);
  font-size: 0.96rem;
}
.demo-film { margin: 0; }
.demo-player {
  overflow: hidden;
  border: 1px solid color-mix(in oklab, var(--home-paper-light) 20%, transparent);
  border-radius: 0.9rem;
  background: oklch(0.12 0.02 294);
  box-shadow: 0 3rem 7rem color-mix(in oklab, black 35%, transparent);
  isolation: isolate;
  transform: translateZ(0);
}
.demo-film video {
  display: block;
  width: 100%;
  aspect-ratio: 14 / 9;
  background: oklch(0.12 0.02 294);
  border: 0;
  border-radius: inherit;
  object-fit: contain;
}
.demo-film figcaption {
  display: flex;
  justify-content: space-between;
  gap: 1.5rem;
  padding-top: 1.15rem;
  color: color-mix(in oklab, var(--home-paper-light) 52%, transparent);
  font-family: var(--mono);
  font-size: 0.68rem;
}

.story-section {
  padding-block: clamp(6rem, 10vw, 11rem);
  background: var(--home-paper-light);
}
.story-intro {
  display: grid;
  grid-template-columns: minmax(0, 1.6fr) minmax(18rem, 0.7fr);
  gap: 1.5rem clamp(3rem, 8vw, 8rem);
  align-items: end;
  margin-bottom: clamp(5rem, 9vw, 9rem);
}
.story-intro .section-kicker { grid-column: 1 / -1; margin: 0; }
.story-intro h2 {
  max-width: 13em;
  font-size: clamp(2.7rem, 5.3vw, 5.7rem);
  line-height: 1.13;
  letter-spacing: -0.04em;
}
.story-intro > p:last-child { color: var(--home-muted); }
.story-list { display: grid; gap: clamp(6rem, 12vw, 12rem); margin: 0; padding: 0; list-style: none; }
.story-item {
  display: grid;
  grid-template-columns: minmax(17rem, 0.7fr) minmax(0, 1.5fr);
  gap: clamp(2.5rem, 7vw, 7rem);
  align-items: center;
}
.story-item-reverse { grid-template-columns: minmax(0, 1.5fr) minmax(17rem, 0.7fr); }
.story-item-reverse .story-copy { order: 2; }
.story-item-reverse .story-visual { order: 1; }
.story-copy { position: relative; padding-top: 2.2rem; }
.story-no {
  position: absolute;
  top: 0;
  left: 0;
  color: var(--home-purple);
  font-family: var(--mono);
  font-size: 0.7rem;
}
.story-eyebrow {
  margin-bottom: 1rem;
  color: var(--home-muted);
  font-size: 0.78rem;
  font-weight: 600;
  letter-spacing: 0.08em;
}
.story-copy h3 {
  font-size: clamp(1.7rem, 3vw, 3rem);
  line-height: 1.3;
  letter-spacing: -0.025em;
}
.story-copy > p:not(.story-eyebrow) {
  margin-top: 1.35rem;
  color: var(--home-muted);
  font-size: 0.95rem;
}
.story-points {
  display: grid;
  gap: 0.5rem;
  margin: 1.7rem 0 0;
  padding: 1.2rem 0 0;
  border-top: 1px solid var(--home-line);
  list-style: none;
  font-size: 0.82rem;
}
.story-points li { display: flex; gap: 0.65rem; align-items: center; }
.story-points li::before { content: "↳"; color: var(--home-purple); font-family: var(--mono); }
.story-visual { position: relative; margin: 0; }
.story-visual::before {
  content: "";
  position: absolute;
  inset: 7% -1rem -1rem 9%;
  z-index: -1;
  background: color-mix(in oklab, var(--home-purple) 14%, var(--home-paper));
}
.story-item:nth-child(2) .story-visual::before { background: color-mix(in oklab, var(--home-acid) 50%, var(--home-paper)); }
.story-visual img {
  display: block;
  width: 100%;
  height: auto;
  border: 1px solid color-mix(in oklab, var(--home-ink) 45%, transparent);
  box-shadow: 0 1.8rem 4rem color-mix(in oklab, var(--home-ink) 14%, transparent);
}
.story-visual figcaption {
  margin-top: 0.75rem;
  color: var(--home-muted);
  font-family: var(--mono);
  font-size: 0.64rem;
  letter-spacing: 0.08em;
}

.evidence-section {
  position: relative;
  padding-block: clamp(6.5rem, 11vw, 11rem);
  overflow: hidden;
  background: var(--home-purple-deep);
  color: var(--home-paper-light);
}
.evidence-section::after {
  content: "证据";
  position: absolute;
  right: -0.08em;
  bottom: -0.34em;
  color: color-mix(in oklab, var(--home-paper-light) 6%, transparent);
  font-family: var(--serif);
  font-size: clamp(10rem, 25vw, 28rem);
  font-weight: 700;
  line-height: 1;
  pointer-events: none;
}
.evidence-grid {
  position: relative;
  z-index: 1;
  display: grid;
  grid-template-columns: minmax(0, 1.1fr) minmax(22rem, 0.9fr);
  gap: clamp(4rem, 10vw, 10rem);
}
.evidence-statement .section-kicker { color: var(--home-acid); }
.evidence-statement h2 {
  color: var(--home-paper-light);
  font-size: clamp(3rem, 5.7vw, 6.3rem);
  line-height: 1.12;
  letter-spacing: -0.04em;
}
.evidence-statement h2 em { color: var(--home-acid); font-style: normal; }
.evidence-statement > p:last-child {
  max-width: 36rem;
  margin-top: 2rem;
  color: color-mix(in oklab, var(--home-paper-light) 68%, transparent);
}
.evidence-list { margin: 0; border-top: 1px solid color-mix(in oklab, var(--home-paper-light) 25%, transparent); }
.evidence-list div {
  padding-block: 1.6rem;
  border-bottom: 1px solid color-mix(in oklab, var(--home-paper-light) 25%, transparent);
}
.evidence-list dt {
  display: flex;
  gap: 1rem;
  align-items: baseline;
  color: var(--home-paper-light);
  font-family: var(--serif);
  font-size: 1.35rem;
  font-weight: 600;
}
.evidence-list dt span { color: var(--home-acid); font-family: var(--mono); font-size: 0.65rem; }
.evidence-list dd {
  margin: 0.55rem 0 0 2.25rem;
  color: color-mix(in oklab, var(--home-paper-light) 62%, transparent);
  font-size: 0.88rem;
}

.system-section { padding-block: clamp(6rem, 10vw, 10rem); background: var(--home-paper); }
.system-grid {
  display: grid;
  grid-template-columns: minmax(18rem, 0.78fr) minmax(0, 1.22fr);
  gap: clamp(4rem, 10vw, 10rem);
}
.system-grid h2 {
  font-size: clamp(2.4rem, 4.4vw, 4.8rem);
  line-height: 1.18;
  letter-spacing: -0.035em;
}
.system-lines { border-top: 1px solid var(--home-line); }
.system-lines article {
  display: grid;
  grid-template-columns: 5rem minmax(0, 0.8fr) minmax(0, 1.1fr);
  gap: 1.5rem;
  align-items: baseline;
  padding-block: 1.7rem;
  border-bottom: 1px solid var(--home-line);
}
.system-lines article > span { color: var(--home-purple-deep); font-family: var(--mono); font-size: 0.67rem; }
.system-lines h3 { font-family: var(--sans); font-size: 1rem; font-weight: 600; }
.system-lines p { color: var(--home-muted); font-size: 0.86rem; }

.home-download {
  padding-block: clamp(6rem, 10vw, 10rem);
  background: var(--home-ink);
}
.download-grid {
  display: grid;
  grid-template-columns: minmax(0, 1fr) minmax(24rem, 0.78fr);
  gap: clamp(4rem, 10vw, 10rem);
  align-items: start;
}
.section-kicker-inverse { color: var(--home-acid); }
.home-download h2 {
  color: var(--home-paper-light);
  font-size: clamp(3rem, 5.6vw, 6rem);
  line-height: 1.1;
  letter-spacing: -0.04em;
}
.home-download .download-grid > div:first-child > p:last-child {
  max-width: 34rem;
  margin-top: 1.8rem;
  color: color-mix(in oklab, var(--home-paper-light) 58%, transparent);
}
.download-panel { border-top: 1px solid color-mix(in oklab, var(--home-paper-light) 26%, transparent); }
.download-row {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 1rem;
  padding-block: 1.5rem;
  border-bottom: 1px solid color-mix(in oklab, var(--home-paper-light) 26%, transparent);
  color: var(--home-paper-light);
  text-decoration: none;
  transition: color 0.25s var(--ease), padding 0.25s var(--ease);
}
.download-row span { display: grid; gap: 0.18rem; }
.download-row strong { font-family: var(--serif); font-size: 1.5rem; font-weight: 600; }
.download-row small { color: color-mix(in oklab, var(--home-paper-light) 48%, transparent); font-size: 0.72rem; }
.download-row b { color: var(--home-acid); font-size: 1.2rem; font-weight: 400; }
.download-row:hover { color: var(--home-acid); padding-inline: 0.6rem; }
.download-guides { display: flex; flex-wrap: wrap; gap: 0.8rem 1.4rem; margin-top: 1.4rem; }
.download-guides a {
  color: color-mix(in oklab, var(--home-paper-light) 66%, transparent);
  font-size: 0.8rem;
  text-underline-offset: 0.25rem;
}
.download-guides a:hover { color: var(--home-paper-light); }

.home-foot { background: var(--home-ink); }
.home-foot .wordmark-latin { text-transform: uppercase; }

.home-hero [data-reveal]:nth-child(2) { transition-delay: 0.08s; }
.home-hero [data-reveal]:nth-child(3) { transition-delay: 0.15s; }
.home-hero [data-reveal]:nth-child(4) { transition-delay: 0.22s; }
.home-hero .product-stage { transition-delay: 0.16s; }

@media (max-width: 1100px) {
  .home-hero-grid { grid-template-columns: 1fr; }
  .home-hero-copy { max-width: 52rem; }
  .product-stage { max-width: 58rem; margin-left: auto; }
  .format-rail-inner { grid-template-columns: 1fr; gap: 0.5rem; padding-block: 1.25rem; }
  .format-rail ul { flex-wrap: wrap; justify-content: flex-start; }
  .remote-grid { grid-template-columns: minmax(18rem, 1fr) minmax(19rem, 0.58fr); gap: 4rem; }
  .story-item,
  .story-item-reverse { grid-template-columns: 1fr; }
  .story-item-reverse .story-copy,
  .story-item-reverse .story-visual { order: initial; }
  .story-copy { max-width: 44rem; }
}

@media (max-width: 820px) {
  .home-nav .nav-links { background: var(--home-paper); }
  .home-nav .nav-toggle { border-color: var(--home-line); color: var(--home-ink); }
  .home-nav .nav-inner > .btn { margin-left: auto; }
  .home-hero { min-height: auto; padding-block: 3.75rem 5.5rem; }
  .home-hero-grid { gap: 3.25rem; }
  .home-hero h1 { font-size: clamp(2.75rem, 11vw, 4.4rem); }
  .product-stage { padding-left: 0; }
  .product-stage::before { inset: 5rem -25vw -2rem 15%; }
  .stage-stamp { right: -0.3rem; }
  .product-stage figcaption { margin-left: 0; grid-template-columns: 1fr; gap: 0.25rem; }
  .editorial-head,
  .story-intro,
  .evidence-grid,
  .harness-grid,
  .remote-grid,
  .system-grid,
  .download-grid { grid-template-columns: 1fr; }
  .harness-section,
  .demo-section,
  .story-section,
  .evidence-section,
  .remote-section,
  .system-section,
  .home-download { padding-block: clamp(4.5rem, 11vw, 6.5rem); }
  .harness-grid,
  .remote-grid,
  .evidence-grid,
  .system-grid,
  .download-grid { gap: 3.5rem; }
  .remote-copy { max-width: 48rem; }
  .remote-visual { width: min(100%, 22rem); }
  .story-intro .section-kicker { grid-column: auto; }
  .story-intro,
  .editorial-head { margin-bottom: 3.5rem; }
  .story-list { gap: 5rem; }
  .editorial-head { align-items: start; }
  .system-lines article { grid-template-columns: 4rem 1fr; }
  .system-lines p { grid-column: 2; }
}

@media (max-width: 560px) {
  .home-page { line-height: 1.65; }
  .home-nav .nav-inner { height: 4.2rem; }
  .home-nav .wordmark-logo { width: 2.15rem; height: 2.15rem; }
  .home-nav .btn-sm { min-height: 2.75rem; padding: 0.68rem 0.9rem; font-size: 0.78rem; }
  .home-hero { padding-block: 3rem 4rem; }
  .signal-line { gap: 0.4rem 0.8rem; }
  .home-hero-lead { font-size: 0.98rem; }
  .home-hero-actions { align-items: stretch; flex-direction: column; gap: 0.65rem; }
  .home-hero-actions .btn,
  .home-hero-actions .text-link {
    display: flex;
    justify-content: center;
    width: 100%;
    min-height: 2.75rem;
  }
  .home-hero-actions .text-link { align-items: center; }
  .hero-facts { grid-template-columns: 1fr; gap: 0.7rem; }
  .hero-facts div { display: grid; grid-template-columns: 4rem 1fr; align-items: baseline; }
  .product-stage {
    width: calc(100% + 2 * var(--gutter));
    max-width: none;
    margin-inline: calc(-1 * var(--gutter));
    padding: 2.1rem 0 1rem;
  }
  .product-stage::before { inset: 4.5rem 0 -1rem 20%; }
  .stage-index { left: var(--gutter); right: auto; }
  .stage-frame {
    box-shadow: 0 1.8rem 3.6rem color-mix(in oklab, var(--home-ink) 22%, transparent);
    transform: none;
  }
  .stage-stamp { display: none; }
  .product-stage figcaption {
    margin: 1.1rem 0 0;
    padding-inline: var(--gutter);
  }
  .format-rail { overflow: hidden; }
  .format-rail-inner { display: block; padding-block: 1.15rem; }
  .format-rail ul {
    width: calc(100% + 2 * var(--gutter));
    margin: 0 calc(-1 * var(--gutter));
    padding: 0.85rem var(--gutter) 0.15rem;
    flex-wrap: nowrap;
    gap: 0.55rem;
    overflow-x: auto;
    overscroll-behavior-inline: contain;
    scroll-snap-type: inline proximity;
    scrollbar-width: none;
  }
  .format-rail ul::-webkit-scrollbar { display: none; }
  .format-rail li {
    flex: 0 0 auto;
    padding: 0.48rem 0.72rem;
    border: 1px solid color-mix(in oklab, var(--home-paper-light) 24%, transparent);
    border-radius: 999px;
    scroll-snap-align: start;
  }
  .format-label { font-size: 0.72rem; }
  .harness-section,
  .demo-section,
  .story-section,
  .evidence-section,
  .remote-section,
  .system-section,
  .home-download { padding-block: 4.25rem; }
  .harness-section::after,
  .remote-visual::before { display: none; }
  .evidence-section::after { font-size: 9rem; opacity: 0.6; }
  .editorial-head h2,
  .story-intro h2,
  .evidence-statement h2,
  .harness-grid header > h2,
  .remote-copy h2,
  .home-download h2 { font-size: clamp(2.25rem, 11vw, 3.5rem); }
  .harness-list li { grid-template-columns: 1fr; gap: 0.55rem; }
  .remote-section { background: color-mix(in oklab, var(--home-purple) 5%, var(--home-paper)); }
  .remote-capabilities div { grid-template-columns: 4.7rem 1fr; gap: 1rem; }
  .remote-visual { width: 100%; padding: 2rem 0.9rem 1rem; }
  .remote-orbit-top { right: 0; }
  .remote-orbit-bottom { left: 0; }
  .phone-frame { max-width: 18rem; margin-inline: auto; }
  .phone-frame { box-shadow: 0 2rem 4rem color-mix(in oklab, var(--home-ink) 25%, transparent), 0.65rem 0.65rem 0 var(--home-acid); }
  .remote-visual figcaption { flex-direction: column; gap: 0.25rem; }
  .demo-film { margin-inline: calc(-1 * var(--gutter)); }
  .demo-film figcaption {
    flex-direction: column;
    gap: 0.3rem;
    padding-inline: var(--gutter);
  }
  .demo-player { border-radius: 0; border-inline: 0; }
  .story-intro,
  .editorial-head { margin-bottom: 2.75rem; }
  .story-list { gap: 4.25rem; }
  .story-item { padding-top: 1.5rem; border-top: 1px solid var(--home-line); }
  .story-copy h3 { font-size: 1.65rem; }
  .story-visual { margin-inline: calc(-1 * var(--gutter)); }
  .story-visual::before { inset: 7% 0 -0.45rem 6%; }
  .story-visual figcaption { padding-inline: var(--gutter); }
  .evidence-grid { gap: 3rem; }
  .evidence-list dd { margin-left: 0; }
  .system-grid { gap: 3rem; }
  .system-lines article { grid-template-columns: 1fr; gap: 0.5rem; }
  .system-lines p { grid-column: auto; }
  .download-grid { gap: 3rem; }
  .download-guides { display: grid; grid-template-columns: 1fr; gap: 0; margin-top: 1rem; }
  .download-guides a { display: flex; align-items: center; min-height: 2.75rem; }
  .home-foot .foot-inner { align-items: flex-start; flex-direction: column; }
}

@media (prefers-reduced-motion: reduce) {
  .home-page .stage-frame { transform: none; }
}