:root {
  --ink: #123f35;
  --soft: #f4f7f3;
  --line: #dfe7e2;
  --muted: #5d6f68;
  --accent: #d9a441;
  --panel: #ffffff;
}

* {
  box-sizing: border-box;
}

body {
  margin: 0;
  background: var(--soft);
  color: #15231f;
  font-family: Arial, Helvetica, sans-serif;
}

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

.site-header {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 24px;
  padding: 18px clamp(18px, 4vw, 56px);
  border-bottom: 1px solid var(--line);
  background: rgba(244, 247, 243, 0.94);
  position: sticky;
  top: 0;
  z-index: 5;
}

.brand,
nav,
.hero-actions,
footer {
  display: flex;
  align-items: center;
  gap: 14px;
}

.brand span {
  display: grid;
  width: 42px;
  height: 42px;
  place-items: center;
  border-radius: 8px;
  background: var(--ink);
  color: #ffffff;
  font-weight: 800;
}

nav {
  color: var(--muted);
  font-weight: 700;
}

.nav-button,
.primary-button,
.ghost-button {
  border-radius: 8px;
  padding: 11px 16px;
  font-weight: 800;
}

.nav-button,
.primary-button {
  background: var(--ink);
  color: #ffffff;
}

.ghost-button {
  border: 1px solid var(--line);
  background: #ffffff;
  color: var(--ink);
}

.hero {
  display: grid;
  grid-template-columns: minmax(280px, 0.88fr) minmax(320px, 1.12fr);
  gap: clamp(28px, 5vw, 70px);
  align-items: center;
  min-height: calc(100vh - 78px);
  padding: clamp(36px, 6vw, 88px) clamp(18px, 4vw, 56px);
}

.hero-copy {
  max-width: 680px;
}

.eyebrow {
  margin: 0 0 10px;
  color: var(--accent);
  font-size: 0.78rem;
  font-weight: 900;
  letter-spacing: 0;
  text-transform: uppercase;
}

h1,
h2 {
  margin: 0;
  color: var(--ink);
  line-height: 1.04;
}

h1 {
  font-size: clamp(3rem, 7vw, 6.8rem);
}

h2 {
  font-size: clamp(2rem, 4vw, 3.8rem);
}

.hero-copy p:not(.eyebrow),
.section p,
.preview-grid p {
  color: var(--muted);
  line-height: 1.65;
}

.hero-copy p:not(.eyebrow) {
  max-width: 620px;
  font-size: 1.12rem;
}

.app-preview {
  display: grid;
  grid-template-columns: 160px 1fr;
  min-height: 520px;
  border: 1px solid var(--line);
  border-radius: 8px;
  overflow: hidden;
  background: #ffffff;
  box-shadow: 0 24px 70px rgba(17, 63, 53, 0.14);
}

.preview-sidebar {
  display: grid;
  align-content: start;
  gap: 12px;
  padding: 24px 18px;
  background: var(--ink);
}

.preview-sidebar span,
.preview-top,
.preview-metrics span,
.preview-grid article {
  border-radius: 8px;
}

.preview-sidebar span {
  height: 34px;
  background: rgba(255, 255, 255, 0.16);
}

.preview-main {
  padding: 24px;
}

.preview-top {
  height: 72px;
  background: var(--soft);
  margin-bottom: 18px;
}

.preview-metrics {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 12px;
  margin-bottom: 18px;
}

.preview-metrics span {
  height: 90px;
  background: #edf3ef;
}

.preview-grid {
  display: grid;
  gap: 12px;
}

.preview-grid article {
  padding: 18px;
  border: 1px solid var(--line);
  background: #ffffff;
}

.preview-grid strong,
.feature-grid strong {
  color: var(--ink);
}

.section {
  padding: clamp(36px, 6vw, 76px) clamp(18px, 4vw, 56px);
}

.feature-grid {
  display: grid;
  grid-template-columns: repeat(3, minmax(220px, 1fr));
  gap: 14px;
  margin-top: 24px;
}

.feature-grid article {
  min-height: 150px;
  padding: 20px;
  border: 1px solid var(--line);
  border-radius: 8px;
  background: var(--panel);
}

.deploy {
  display: flex;
  justify-content: space-between;
  align-items: center;
  gap: 24px;
  border-top: 1px solid var(--line);
  border-bottom: 1px solid var(--line);
  background: #ffffff;
}

.deploy div {
  max-width: 760px;
}

footer {
  justify-content: space-between;
  padding: 22px clamp(18px, 4vw, 56px);
  color: var(--muted);
}

@media (max-width: 900px) {
  .site-header,
  .deploy,
  footer {
    align-items: flex-start;
    flex-direction: column;
  }

  nav {
    flex-wrap: wrap;
  }

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

  .app-preview {
    grid-template-columns: 96px 1fr;
    min-height: 440px;
  }
}

@media (max-width: 560px) {
  .app-preview {
    grid-template-columns: 1fr;
  }

  .preview-sidebar {
    display: none;
  }

  .hero-actions {
    align-items: stretch;
    flex-direction: column;
  }
}