:root {
  color-scheme: light;
  --ink: #20133a;
  --muted: #5c5570;
  --brand: #512bd4;
  --brand-dark: #32145a;
  --accent: #50e6ff;
  --line: #e7e3f7;
  --soft: #f6f3ff;
  --panel: #ffffff;
}

* {
  box-sizing: border-box;
}

body {
  margin: 0;
  color: var(--ink);
  background: #ffffff;
  font-family: Inter, ui-sans-serif, system-ui, -apple-system, BlinkMacSystemFont, "Segoe UI", sans-serif;
}

a {
  color: inherit;
  text-decoration: none;
}

.site-header {
  position: sticky;
  top: 0;
  z-index: 10;
  display: flex;
  align-items: center;
  justify-content: space-between;
  min-height: 4rem;
  padding: 0 2rem;
  border-bottom: 1px solid var(--line);
  background: rgba(255, 255, 255, 0.92);
  backdrop-filter: blur(10px);
}

.brand,
.site-header nav {
  display: flex;
  align-items: center;
}

.brand {
  gap: 0.7rem;
  font-weight: 800;
}

.brand-mark {
  display: grid;
  place-items: center;
  width: 2.15rem;
  height: 2.15rem;
  border-radius: 8px;
  color: #ffffff;
  background: var(--brand);
  font-size: 0.82rem;
}

.site-header nav {
  gap: 1.6rem;
  color: var(--muted);
  font-size: 0.92rem;
  font-weight: 700;
}

.site-header nav a:hover {
  color: var(--brand);
}

.hero {
  display: grid;
  grid-template-columns: minmax(0, 1fr) minmax(20rem, 0.72fr);
  gap: 4rem;
  align-items: center;
  min-height: calc(100svh - 4rem);
  padding: 7rem 8rem 6rem;
  color: #ffffff;
  background:
    linear-gradient(115deg, rgba(50, 20, 90, 0.96), rgba(81, 43, 212, 0.9) 58%, rgba(118, 74, 188, 0.82)),
    url("https://iotsharp.net/home_bg_dark.webp") center / cover;
}

.eyebrow {
  margin: 0;
  color: var(--brand);
  font-size: 0.78rem;
  font-weight: 800;
  letter-spacing: 0;
  line-height: 1.45;
  text-transform: uppercase;
}

.hero .eyebrow {
  color: var(--accent);
}

h1,
h2,
h3,
p {
  margin-top: 0;
}

h1 {
  margin-bottom: 0;
  font-size: 6rem;
  line-height: 0.98;
}

.hero-text {
  max-width: 48rem;
  margin: 1.5rem 0 0;
  color: #f2eaff;
  font-size: 1.18rem;
  line-height: 1.9;
}

.actions {
  display: flex;
  flex-wrap: wrap;
  gap: 0.9rem;
  margin-top: 2.5rem;
}

.primary,
.secondary {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  min-height: 2.9rem;
  border-radius: 8px;
  padding: 0.8rem 1.2rem;
  font-weight: 800;
  transition: transform 0.2s ease, background 0.2s ease, border-color 0.2s ease;
}

.primary {
  color: var(--brand);
  background: #ffffff;
}

.secondary {
  border: 1px solid rgba(255, 255, 255, 0.44);
  color: #ffffff;
}

.primary:hover,
.secondary:hover {
  transform: translateY(-2px);
}

.primary:hover {
  color: var(--ink);
  background: var(--accent);
}

.secondary:hover {
  border-color: var(--accent);
}

.hero-diagram {
  display: grid;
  gap: 1rem;
}

.hero-diagram div {
  border-left: 1px solid rgba(255, 255, 255, 0.35);
  padding: 1.35rem 0 1.35rem 1.45rem;
}

.hero-diagram span {
  display: block;
  color: var(--accent);
  font-size: 0.75rem;
  font-weight: 800;
  letter-spacing: 0;
  text-transform: uppercase;
}

.hero-diagram strong {
  display: block;
  margin-top: 0.45rem;
  font-size: 1.45rem;
}

.hero-diagram small {
  display: block;
  margin-top: 0.55rem;
  color: #f2eaff;
  line-height: 1.55;
}

.section {
  padding: 6rem 8rem;
}

.section:nth-of-type(odd) {
  background: var(--soft);
}

.section-heading {
  max-width: 58rem;
}

.section-heading h2,
.start h2 {
  margin: 1rem 0 0;
  font-size: 3.25rem;
  line-height: 1.12;
}

.feature-grid {
  display: grid;
  grid-template-columns: repeat(3, minmax(0, 1fr));
  gap: 1px;
  margin-top: 3rem;
  overflow: hidden;
  border: 1px solid var(--line);
  border-radius: 8px;
  background: var(--line);
}

.feature-grid article {
  min-height: 14rem;
  padding: 1.5rem;
  background: var(--panel);
  transition: transform 0.2s ease, background 0.2s ease;
}

.feature-grid article:hover {
  background: #fbfaff;
  transform: translateY(-2px);
}

.feature-grid span {
  color: var(--brand);
  font-weight: 800;
}

.feature-grid h3 {
  margin: 0.85rem 0 0;
  font-size: 1.35rem;
}

.feature-grid p,
.module-list p,
.start p {
  color: var(--muted);
  line-height: 1.75;
}

.split {
  display: grid;
  grid-template-columns: minmax(0, 0.8fr) minmax(0, 1fr);
  gap: 3rem;
}

.flow {
  display: grid;
  gap: 1px;
  overflow: hidden;
  border: 1px solid var(--line);
  border-radius: 8px;
  background: var(--line);
}

.flow div,
.module-list p {
  margin: 0;
  padding: 1.15rem;
  background: #ffffff;
}

.flow b,
.flow small {
  display: block;
}

.flow small {
  margin-top: 0.35rem;
  color: var(--muted);
}

.module-list {
  display: grid;
  gap: 1px;
  overflow: hidden;
  border: 1px solid var(--line);
  border-radius: 8px;
  background: var(--line);
}

.start {
  display: grid;
  grid-template-columns: minmax(0, 0.85fr) minmax(0, 1fr);
  gap: 3rem;
  align-items: center;
}

code {
  border-radius: 5px;
  padding: 0.1rem 0.25rem;
  background: #eee8ff;
  color: var(--brand-dark);
}

pre {
  margin: 0;
  overflow: auto;
  border-radius: 8px;
  padding: 1.35rem;
  background: #20133a;
  color: #f2eaff;
  line-height: 1.7;
}

pre code {
  padding: 0;
  background: transparent;
  color: inherit;
}

footer {
  display: flex;
  justify-content: space-between;
  gap: 1rem;
  padding: 2rem 8rem;
  color: #f2eaff;
  background: var(--brand-dark);
}

footer a {
  color: var(--accent);
  font-weight: 800;
}

@media (max-width: 980px) {
  .hero,
  .split,
  .start {
    grid-template-columns: 1fr;
  }

  .hero,
  .section,
  footer {
    padding-right: 3rem;
    padding-left: 3rem;
  }

  .feature-grid {
    grid-template-columns: repeat(2, minmax(0, 1fr));
  }
}

@media (max-width: 640px) {
  .site-header {
    align-items: flex-start;
    flex-direction: column;
    height: auto;
    padding: 0.9rem 1.25rem;
  }

  .site-header nav {
    width: 100%;
    gap: 1rem;
    overflow-x: auto;
    padding-bottom: 0.2rem;
    white-space: nowrap;
  }

  .hero {
    min-height: auto;
    gap: 2.5rem;
    padding: 5rem 1.25rem 4rem;
  }

  h1 {
    font-size: 3.35rem;
  }

  .section-heading h2,
  .start h2 {
    font-size: 2.15rem;
  }

  .section,
  footer {
    padding: 4rem 1.25rem;
  }

  .feature-grid {
    grid-template-columns: 1fr;
  }

  .actions,
  footer {
    flex-direction: column;
  }

  .primary,
  .secondary {
    width: 100%;
  }
}