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

:root {
  --bg: #090f1a;
  --panel: #121c2d;
  --panel-soft: #1a2940;
  --text-main: #eef4ff;
  --text-muted: #a8b7d0;
  --accent: #6ea8ff;
  --accent-2: #7cf7d2;
  --border: rgba(255, 255, 255, 0.12);
}

html,
body {
  margin: 0;
  color: var(--text-main);
  font-family: "Avenir Next", "Segoe UI", "SF Pro Text", "Helvetica Neue", Arial, sans-serif;
  background: linear-gradient(150deg, #081226 0%, #0c1830 40%, #0f2a45 100%);
  line-height: 1.65;
}

a {
  color: var(--accent);
  text-decoration: none;
}

a:hover,
a:focus {
  text-decoration: underline;
}

.container {
  width: min(1080px, 92vw);
  margin: 0 auto;
}

.icon-link {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  width: 30px;
  height: 30px;
  border-radius: 999px;
  transition: background-color 0.2s ease, border-color 0.2s ease;
  border: 1px solid rgba(255, 255, 255, 0);
}

.icon-link svg {
  width: 16px;
  height: 16px;
  fill: var(--text-main);
  transition: fill 0.2s ease;
}

.icon-link:hover,
.icon-link:focus-visible {
  border-color: var(--accent);
  background: rgba(110, 168, 255, 0.14);
}

.icon-link:hover svg,
.icon-link:focus-visible svg {
  fill: var(--accent);
}

.source-link {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 0.45rem;
  padding: 0.35rem;
  border-radius: 999px;
  border: 1px solid var(--border);
  transition: background-color 0.2s ease, border-color 0.2s ease;
}

.source-link:hover,
.source-link:focus-visible {
  border-color: var(--accent);
  background: rgba(110, 168, 255, 0.14);
}

.source-link svg {
  width: 16px;
  height: 16px;
  fill: var(--text-main);
  transition: fill 0.2s ease, transform 0.2s ease;
}

.source-link:hover svg,
.source-link:focus-visible svg {
  fill: var(--accent);
  transform: translateY(-0.4px);
}

.skip-link {
  position: absolute;
  left: -999px;
  top: 0.75rem;
  background: #fff;
  color: #000;
  padding: 0.5rem 0.8rem;
  border-radius: 0.3rem;
}

.skip-link:focus {
  left: 0.75rem;
}

.site-header {
  position: sticky;
  top: 0;
  z-index: 10;
  backdrop-filter: blur(10px);
  background: rgba(9, 15, 26, 0.72);
  border-bottom: 1px solid var(--border);
}

.site-header .container {
  min-height: 66px;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 1rem;
}

.brand {
  display: inline-flex;
  align-items: center;
  gap: 0.65rem;
  font-size: 1.2rem;
  font-weight: 700;
  letter-spacing: 0.02em;
  color: var(--text-main);
  transition: color 0.2s ease, opacity 0.2s ease;
}

.brand img {
  width: 32px;
  height: 32px;
  border-radius: 10px;
  border: 1px solid rgba(255, 255, 255, 0.24);
}

.brand:hover,
.brand:focus-visible {
  color: var(--accent);
}

.hero-logo {
  width: min(88px, 20vw);
  height: auto;
  border-radius: 18px;
  border: 1px solid rgba(255, 255, 255, 0.16);
  margin-bottom: 1rem;
  box-shadow: 0 10px 24px rgba(0, 0, 0, 0.25);
}

.site-header nav {
  display: flex;
  flex-wrap: wrap;
  gap: 1rem;
  justify-content: flex-end;
}

.hero {
  padding: 4.5rem 0 3.5rem;
}

.hero-content h1 {
  font-size: clamp(2rem, 4.5vw, 3.2rem);
  line-height: 1.18;
  margin: 0.4rem 0;
}

.eyebrow {
  text-transform: uppercase;
  color: var(--accent-2);
  letter-spacing: 0.12em;
  font-size: 0.78rem;
}

.lead {
  max-width: 63ch;
  color: var(--text-muted);
  font-size: 1.05rem;
}

.actions {
  display: flex;
  flex-wrap: wrap;
  gap: 0.9rem;
  margin-top: 1.4rem;
}

.btn {
  display: inline-block;
  padding: 0.72rem 1rem;
  border-radius: 0.65rem;
  font-weight: 700;
  border: 1px solid transparent;
}

.btn-primary {
  background: linear-gradient(120deg, #5f9dff, #72f1cf);
  color: #051223;
}

.btn-primary:hover {
  filter: brightness(1.06);
}

.btn-secondary {
  background: rgba(10, 20, 38, 0.78);
  color: var(--text-main);
  border-color: var(--border);
}

.section {
  padding: 2.6rem 0;
}

.section-alt {
  background: rgba(10, 18, 33, 0.7);
  border-top: 1px solid var(--border);
  border-bottom: 1px solid var(--border);
}

.grid {
  margin-top: 1.2rem;
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: 1rem;
}

dl {
  max-width: 72ch;
}

dt {
  font-weight: 700;
  color: var(--accent-2);
  margin-top: 0.75rem;
}

dd {
  margin: 0.2rem 0 0 0;
  padding-left: 0;
}


article,
.two-column {
  background: rgba(12, 27, 47, 0.84);
  border: 1px solid var(--border);
  border-radius: 0.8rem;
  padding: 1.05rem;
}

article h3 {
  margin-top: 0;
}

.two-column {
  display: grid;
  grid-template-columns: 1.2fr 1fr;
  gap: 1rem;
}

ol,
ul,
details {
  max-width: 70ch;
}

details {
  border: 1px solid var(--border);
  border-radius: 0.6rem;
  background: rgba(9, 17, 32, 0.7);
  padding: 0.85rem 0.95rem;
  margin-bottom: 0.7rem;
}

summary {
  cursor: pointer;
  font-weight: 700;
}

details p {
  margin-bottom: 0;
}

.site-footer {
  border-top: 1px solid var(--border);
  padding: 1.4rem 0 2rem;
}

.site-footer .container {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 1rem;
  flex-wrap: wrap;
}

.site-footer p {
  color: var(--text-muted);
  margin: 0;
}

.site-footer .footer-brand {
  display: inline-flex;
  align-items: center;
  gap: 0.55rem;
}

.footer-logo {
  width: 22px;
  height: 22px;
  border-radius: 6px;
  border: 1px solid rgba(255, 255, 255, 0.25);
}

.site-footer nav {
  display: flex;
  gap: 1rem;
  flex-wrap: wrap;
}

.sr-only {
  position: absolute;
  width: 1px;
  height: 1px;
  padding: 0;
  margin: -1px;
  overflow: hidden;
  clip: rect(0, 0, 0, 0);
  border: 0;
}

@media (max-width: 840px) {
  .site-header .container {
    flex-direction: column;
    align-items: flex-start;
    padding-top: 0.8rem;
    padding-bottom: 0.8rem;
  }

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

  .two-column {
    grid-template-columns: 1fr;
  }
}

@media (max-width: 460px) {
  .hero {
    padding-top: 3.2rem;
  }

  .actions .btn {
    width: 100%;
    text-align: center;
  }
}