:root {
  color-scheme: dark;
  --bg: #08111d;
  --bg-deep: #040a11;
  --surface: rgba(14, 26, 42, 0.82);
  --surface-strong: rgba(18, 33, 52, 0.96);
  --surface-border: rgba(137, 164, 190, 0.18);
  --text: #eef4f7;
  --text-muted: #a8bac9;
  --accent: #8fb7c9;
  --accent-strong: #bed9e7;
  --shadow: 0 24px 60px rgba(2, 8, 15, 0.35);
  --radius-lg: 24px;
  --radius-md: 18px;
  --content-width: 1160px;
  --font-ui: "Avenir Next", "Segoe UI", "Helvetica Neue", Arial, sans-serif;
}

*,
*::before,
*::after {
  box-sizing: border-box;
}

html {
  scroll-behavior: smooth;
}

body {
  margin: 0;
  min-width: 320px;
  font-family: var(--font-ui);
  line-height: 1.6;
  color: var(--text);
  background:
    radial-gradient(circle at top, rgba(47, 83, 112, 0.22), transparent 32%),
    radial-gradient(circle at 85% 12%, rgba(121, 164, 184, 0.12), transparent 20%),
    linear-gradient(180deg, #0a1421 0%, var(--bg) 45%, var(--bg-deep) 100%);
}

a {
  color: inherit;
}

a:focus-visible,
button:focus-visible {
  outline: 3px solid var(--accent-strong);
  outline-offset: 4px;
}

.shell {
  width: min(calc(100% - 2rem), var(--content-width));
  margin: 0 auto;
}

.site-header {
  padding: 28px 0 24px;
}

.masthead {
  display: grid;
  grid-template-columns: minmax(0, 1.2fr) minmax(300px, 0.8fr);
  gap: 28px;
  align-items: stretch;
  min-height: calc(100vh - 52px);
  padding: 36px 0 52px;
}

.hero-copy,
.brief-panel,
.surface {
  border: 1px solid var(--surface-border);
  background: linear-gradient(180deg, rgba(23, 39, 59, 0.9), rgba(11, 22, 35, 0.94));
  box-shadow: var(--shadow);
  backdrop-filter: blur(10px);
}

.hero-copy {
  display: flex;
  flex-direction: column;
  justify-content: center;
  padding: clamp(2rem, 4vw, 4rem);
  border-radius: var(--radius-lg);
}

.eyebrow,
.section-kicker,
.panel-label {
  margin: 0 0 0.9rem;
  letter-spacing: 0.18em;
  text-transform: uppercase;
  font-size: 0.76rem;
  color: var(--accent);
}

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

h1 {
  max-width: 11ch;
  margin-bottom: 1rem;
  font-size: clamp(2.9rem, 7vw, 5.5rem);
  line-height: 0.98;
  letter-spacing: -0.04em;
}

.lede,
.section-intro,
.product-copy p,
.company-copy p,
.feature-card p,
.brief-text {
  color: var(--text-muted);
}

.lede {
  max-width: 38rem;
  margin-bottom: 0;
  font-size: clamp(1.08rem, 2vw, 1.24rem);
}

.hero-actions {
  display: flex;
  flex-wrap: wrap;
  gap: 0.9rem;
  margin-top: 2rem;
}

.button {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  min-height: 3.25rem;
  padding: 0.8rem 1.25rem;
  border-radius: 999px;
  border: 1px solid transparent;
  text-decoration: none;
  font-weight: 600;
  letter-spacing: 0.01em;
  transition:
    transform 160ms ease,
    border-color 160ms ease,
    background-color 160ms ease,
    color 160ms ease;
}

.button:hover {
  transform: translateY(-1px);
}

.button-primary {
  background: linear-gradient(180deg, #c7dee8 0%, #9ebfd0 100%);
  color: #07111c;
}

.button-primary:hover {
  background: linear-gradient(180deg, #d1e5ee 0%, #abc9d8 100%);
}

.button-secondary {
  border-color: rgba(173, 201, 217, 0.28);
  background: rgba(9, 18, 30, 0.4);
  color: var(--text);
}

.button-secondary:hover {
  border-color: rgba(173, 201, 217, 0.46);
  background: rgba(12, 24, 39, 0.65);
}

.brief-panel {
  display: flex;
  flex-direction: column;
  justify-content: space-between;
  padding: 1.4rem;
  border-radius: var(--radius-lg);
}

.panel-header {
  padding-bottom: 1rem;
  border-bottom: 1px solid rgba(143, 183, 201, 0.16);
}

.panel-place {
  margin: 0;
  color: var(--text);
  font-size: 0.98rem;
}

.brief-list {
  display: grid;
  gap: 1rem;
  padding: 0;
  margin: 1.25rem 0 0;
  list-style: none;
}

.brief-list li {
  padding: 1rem 0 0;
  border-top: 1px solid rgba(143, 183, 201, 0.12);
}

.brief-title {
  display: block;
  margin-bottom: 0.25rem;
  font-weight: 600;
  color: var(--text);
}

.section {
  padding: 1.25rem 0 3rem;
}

.section-muted {
  padding-bottom: 4.75rem;
}

.section-heading {
  margin-bottom: 1.5rem;
}

h2 {
  margin-bottom: 0.6rem;
  font-size: clamp(2rem, 4vw, 3rem);
  line-height: 1.05;
  letter-spacing: -0.03em;
}

.section-intro {
  max-width: 40rem;
  margin-bottom: 0;
  font-size: 1.1rem;
}

.product-layout {
  display: grid;
  gap: 1.2rem;
}

.surface {
  border-radius: var(--radius-md);
}

.product-copy,
.company-copy {
  padding: 1.5rem;
}

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

.feature-card {
  padding: 1.3rem;
}

h3 {
  margin-bottom: 0.45rem;
  font-size: 1.08rem;
  line-height: 1.2;
}

.company-layout {
  display: grid;
  grid-template-columns: minmax(0, 0.8fr) minmax(0, 1.2fr);
  gap: 1.2rem;
  align-items: start;
}

.site-footer {
  padding: 0 0 2rem;
}

.footer-layout {
  display: flex;
  flex-wrap: wrap;
  justify-content: space-between;
  gap: 0.75rem 1.25rem;
  padding: 1.25rem 0 0;
  border-top: 1px solid rgba(143, 183, 201, 0.14);
  color: var(--text-muted);
}

.footer-layout p {
  margin-bottom: 0;
}

.footer-layout a {
  text-decoration-color: rgba(190, 217, 231, 0.35);
  text-underline-offset: 0.18em;
}

@media (max-width: 820px) {
  .site-header {
    padding-top: 18px;
  }

  .masthead,
  .company-layout,
  .feature-grid {
    grid-template-columns: 1fr;
  }

  .masthead {
    min-height: auto;
    padding: 24px 0 30px;
  }

  .hero-copy,
  .brief-panel {
    padding: 1.5rem;
  }

  h1 {
    max-width: 13ch;
    font-size: clamp(2.6rem, 12vw, 4rem);
  }

  .section {
    padding-top: 0.75rem;
  }

  .footer-layout {
    flex-direction: column;
  }
}

@media (prefers-reduced-motion: reduce) {
  html {
    scroll-behavior: auto;
  }

  .button {
    transition: none;
  }

  .button:hover {
    transform: none;
  }
}