:root {
  --bg: #eef1f6;
  --surface: #ffffff;
  --surface-soft: #f6f8fb;
  --line: #d8dfeb;
  --ink: #121826;
  --muted: #5d697d;
  --accent: #6a5cff;
  --accent-2: #19b7ff;
  --dark: #0d1020;
  --dark-2: #171c34;
}

* {
  box-sizing: border-box;
}

html,
body {
  margin: 0;
  min-height: 100%;
}

body {
  font-family: "Inter", sans-serif;
  color: var(--ink);
  background:
    radial-gradient(circle at top right, rgba(106, 92, 255, 0.2), transparent 22%),
    linear-gradient(180deg, #0b0d18 0, #141934 920px, var(--bg) 920px, var(--bg) 100%);
}

.shell {
  max-width: 1220px;
  margin: 0 auto;
  padding: 24px 24px 56px;
}

.hero-top,
.doc-top {
  display: flex;
  justify-content: space-between;
  align-items: center;
  gap: 20px;
}

.brand {
  display: inline-flex;
  align-items: center;
  gap: 12px;
  text-decoration: none;
  color: #fff;
}

.dark-brand {
  color: var(--ink);
}

.brand-mark {
  display: inline-grid;
  place-items: center;
  width: 52px;
  height: 52px;
  border-radius: 16px;
  background: linear-gradient(135deg, var(--accent) 0%, var(--accent-2) 100%);
  color: #fff;
  font-family: "Sora", sans-serif;
  font-size: 0.88rem;
  font-weight: 700;
}

.brand-name,
.dark-name,
.nav a,
.main-cta,
.sub-cta,
.band-button,
.footer-links a,
.doc-link {
  font-family: "Sora", sans-serif;
}

.brand-name {
  font-size: 1.06rem;
  font-weight: 600;
}

.dark-name {
  color: var(--ink);
  font-size: 1.06rem;
  font-weight: 600;
}

.nav {
  display: flex;
  flex-wrap: wrap;
  gap: 18px;
}

.nav a {
  color: rgba(255, 255, 255, 0.82);
  text-decoration: none;
  font-size: 0.92rem;
}

.nav a:hover {
  color: #fff;
}

.hero-stage {
  display: grid;
  grid-template-columns: minmax(0, 1.1fr) minmax(340px, 0.9fr);
  gap: 24px;
  padding-top: 34px;
}

.stage-copy {
  padding-top: 24px;
}

.kicker,
.section-kicker,
.download-caption,
.box-label {
  margin: 0 0 12px;
  color: #9ca6ff;
  text-transform: uppercase;
  letter-spacing: 0.14em;
  font-size: 0.78rem;
  font-weight: 700;
}

h1,
h2,
h3,
p,
small {
  margin: 0;
}

h1,
h2,
h3 {
  font-family: "Sora", sans-serif;
}

h1 {
  max-width: 760px;
  color: #fff;
  font-size: clamp(3rem, 5vw, 5.2rem);
  line-height: 0.96;
  letter-spacing: -0.05em;
}

.lead {
  max-width: 700px;
  margin-top: 18px;
  color: rgba(255, 255, 255, 0.78);
  font-size: 1.04rem;
  line-height: 1.78;
}

.cta-row {
  display: flex;
  flex-wrap: wrap;
  gap: 14px;
  margin-top: 28px;
}

.main-cta,
.sub-cta,
.band-button {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  min-height: 54px;
  padding: 0 22px;
  border-radius: 16px;
  text-decoration: none;
  font-weight: 600;
}

.main-cta,
.band-button {
  background: linear-gradient(135deg, var(--accent) 0%, var(--accent-2) 100%);
  color: #fff;
  box-shadow: 0 18px 34px rgba(73, 94, 255, 0.28);
}

.sub-cta {
  background: rgba(255, 255, 255, 0.04);
  border: 1px solid rgba(255, 255, 255, 0.12);
  color: #fff;
}

.stage-panel,
.download-band,
.mosaic-card,
.usecase-list,
.footer-panel,
.doc-card {
  background: var(--surface);
  border: 1px solid var(--line);
}

.stage-panel {
  padding: 18px;
  border-radius: 26px;
  background: linear-gradient(180deg, #101427 0%, #1a2140 100%);
  border-color: rgba(255, 255, 255, 0.08);
  box-shadow: 0 18px 40px rgba(10, 12, 25, 0.28);
}

.statusbar {
  display: flex;
  align-items: center;
  gap: 8px;
  margin-bottom: 14px;
}

.dot {
  width: 10px;
  height: 10px;
  border-radius: 50%;
}

.red { background: #ff5d5d; }
.yellow { background: #ffc554; }
.green { background: #39d98a; }

.status-text {
  margin-left: 6px;
  color: rgba(255, 255, 255, 0.72);
  font-size: 0.82rem;
}

.preview-card {
  display: grid;
  gap: 14px;
}

.preview-screen {
  min-height: 340px;
  border-radius: 20px;
  background:
    linear-gradient(135deg, rgba(106, 92, 255, 0.22), rgba(25, 183, 255, 0.14)),
    #0d1020;
  border: 1px solid rgba(255, 255, 255, 0.08);
  display: grid;
  place-items: end start;
}

.preview-overlay {
  padding: 20px;
}

.preview-overlay span {
  display: block;
  margin-bottom: 8px;
  color: #97a5ff;
  font-size: 0.76rem;
  letter-spacing: 0.14em;
}

.preview-overlay strong {
  display: block;
  max-width: 260px;
  color: #fff;
  font-family: "Sora", sans-serif;
  line-height: 1.35;
}

.preview-meta {
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: 12px;
}

.preview-meta div {
  padding: 14px;
  border-radius: 14px;
  background: rgba(255, 255, 255, 0.06);
  border: 1px solid rgba(255, 255, 255, 0.08);
}

.preview-meta small {
  display: block;
  margin-bottom: 6px;
  color: rgba(255, 255, 255, 0.6);
}

.preview-meta strong {
  color: #fff;
  font-family: "Sora", sans-serif;
}

.content {
  margin-top: 34px;
}

.download-band {
  display: grid;
  grid-template-columns: 1fr auto;
  gap: 24px;
  align-items: center;
  padding: 26px;
  border-radius: 24px;
}

.download-copy h2,
.usecase-head h2,
.footer-panel h2 {
  font-size: 2rem;
  line-height: 1.02;
  letter-spacing: -0.04em;
}

.download-copy p,
.mosaic-card p,
.usecase-row p,
.footer-panel p,
.doc-lead,
.doc-block p {
  color: var(--muted);
  line-height: 1.72;
}

.download-copy p {
  margin-top: 12px;
  max-width: 760px;
}

.mosaic {
  display: grid;
  grid-template-columns: 1.2fr 0.8fr 0.8fr;
  gap: 16px;
  margin-top: 24px;
}

.mosaic-card {
  padding: 24px;
  border-radius: 22px;
  background: var(--surface-soft);
}

.mosaic-card.large {
  grid-row: span 2;
  background:
    linear-gradient(180deg, #ffffff 0%, #f4f7ff 100%);
}

.mosaic-card h3 {
  margin-bottom: 10px;
  font-size: 1.16rem;
}

.usecase-grid {
  margin-top: 24px;
}

.usecase-head {
  margin-bottom: 18px;
  max-width: 760px;
}

.usecase-list {
  border-radius: 24px;
  overflow: hidden;
}

.usecase-row {
  padding: 24px 26px;
  border-bottom: 1px solid var(--line);
  background: #fff;
}

.usecase-row:last-child {
  border-bottom: 0;
}

.usecase-row strong {
  display: block;
  margin-bottom: 8px;
  font-family: "Sora", sans-serif;
  font-size: 1.06rem;
}

.footer-panel {
  display: grid;
  grid-template-columns: 1fr auto;
  gap: 24px;
  align-items: center;
  margin-top: 24px;
  padding: 26px;
  border-radius: 24px;
  background: #fff;
}

.footer-links {
  display: grid;
  gap: 10px;
  min-width: 280px;
}

.footer-links a,
.doc-link {
  color: var(--accent);
  text-decoration: none;
  font-weight: 600;
}

.doc-shell {
  max-width: 1080px;
}

.doc-main {
  margin-top: 28px;
}

.doc-card {
  padding: 34px;
  border-radius: 24px;
  background: #fff;
}

.doc-card h1 {
  color: var(--ink);
  font-size: clamp(2.4rem, 4vw, 3.8rem);
  line-height: 0.98;
  letter-spacing: -0.04em;
}

.doc-lead {
  margin-top: 14px;
  margin-bottom: 24px;
}

.doc-block + .doc-block {
  margin-top: 22px;
}

.doc-block h2 {
  margin-bottom: 10px;
  font-size: 1.08rem;
}

@media (max-width: 1024px) {
  .hero-stage,
  .download-band,
  .mosaic,
  .footer-panel {
    grid-template-columns: 1fr;
  }

  .mosaic-card.large {
    grid-row: auto;
  }
}

@media (max-width: 720px) {
  .shell {
    padding: 16px 16px 36px;
  }

  .hero-top,
  .doc-top {
    flex-direction: column;
    align-items: flex-start;
  }

  .nav,
  .cta-row {
    gap: 12px;
  }

  .main-cta,
  .sub-cta,
  .band-button {
    width: 100%;
  }

  .preview-meta {
    grid-template-columns: 1fr;
  }

  .doc-card {
    padding: 22px;
  }
}