:root {
  --blue-950: #031638;
  --blue-900: #06245a;
  --blue-800: #08347c;
  --blue-700: #0c4da2;
  --cyan-100: #dff7ff;
  --cyan-200: #bdeeff;
  --green-400: #18d472;
  --violet-300: #9b86ff;
  --violet-500: #7357ff;
  --white: #ffffff;
  --text: #e8f5ff;
  --muted: #b7c8df;
  --card: rgba(255, 255, 255, 0.09);
  --card-strong: rgba(255, 255, 255, 0.14);
  --border: rgba(255, 255, 255, 0.18);
  --shadow: 0 22px 60px rgba(0, 0, 0, 0.28);
  --radius: 24px;
  --max-width: 1180px;
  --font: system-ui, -apple-system, BlinkMacSystemFont, "Segoe UI", sans-serif;
}

* {
  box-sizing: border-box;
}

html {
  scroll-behavior: smooth;
}

body {
  margin: 0;
  min-height: 100vh;
  font-family: var(--font);
  color: var(--text);
  background:
    radial-gradient(circle at top left, rgba(24, 212, 114, 0.16), transparent 34rem),
    radial-gradient(circle at top right, rgba(155, 134, 255, 0.24), transparent 36rem),
    linear-gradient(160deg, var(--blue-950), var(--blue-900) 48%, #020b1d);
  line-height: 1.6;
}

body::before {
  content: "";
  position: fixed;
  inset: 0;
  z-index: -1;
  background-image: url("../images/am-waveform.png");
  background-repeat: no-repeat;
  background-position: 50% 12%;
  background-size: min(1100px, 92vw) auto;
  opacity: 0.075;
  filter: blur(0.2px);
}

img {
  max-width: 100%;
  height: auto;
}

a {
  color: inherit;
}

.skip-link {
  position: absolute;
  top: 0.75rem;
  left: 0.75rem;
  padding: 0.65rem 0.9rem;
  background: var(--white);
  color: var(--blue-950);
  transform: translateY(-160%);
  transition: transform 0.2s ease;
  z-index: 99;
  border-radius: 999px;
}

.skip-link:focus {
  transform: translateY(0);
}

.site-header {
  padding: 1.2rem 1rem 0.75rem;
}

.site-header__inner,
.main-nav__inner,
.section-shell,
.site-footer__inner {
  width: min(var(--max-width), calc(100% - 2rem));
  margin-inline: auto;
}

.brand {
  display: inline-flex;
  align-items: center;
  gap: 0.9rem;
  text-decoration: none;
}

.brand img {
  width: 58px;
  height: 82px;
  object-fit: contain;
  filter: drop-shadow(0 8px 16px rgba(0, 0, 0, 0.3));
}

.brand strong {
  display: block;
  font-size: clamp(1.45rem, 2vw, 2rem);
  letter-spacing: 0.08em;
}

.brand small {
  display: block;
  color: var(--muted);
  font-size: 0.92rem;
}

.main-nav {
  position: sticky;
  top: 0;
  z-index: 20;
  padding: 0.5rem 0 1rem;
  backdrop-filter: blur(16px);
}

.main-nav__inner {
  display: flex;
  flex-wrap: wrap;
  gap: 0.45rem;
  padding: 0.45rem;
  border: 1px solid var(--border);
  border-radius: 999px;
  background: rgba(3, 22, 56, 0.72);
  box-shadow: 0 14px 36px rgba(0, 0, 0, 0.18);
}

.main-nav a {
  text-decoration: none;
  padding: 0.62rem 0.95rem;
  border-radius: 999px;
  color: var(--muted);
  font-weight: 700;
  transition: background 0.2s ease, color 0.2s ease, transform 0.2s ease;
}

.main-nav a:hover,
.main-nav a:focus-visible {
  background: var(--card-strong);
  color: var(--white);
  transform: translateY(-1px);
}

.hero {
  position: relative;
  display: grid;
  grid-template-columns: minmax(0, 1.1fr) minmax(280px, 0.9fr);
  gap: 2rem;
  align-items: center;
  margin-top: 1.5rem;
  padding: clamp(2rem, 5vw, 4.8rem);
  overflow: hidden;
  border: 1px solid var(--border);
  border-radius: calc(var(--radius) + 14px);
  background:
    linear-gradient(135deg, rgba(255, 255, 255, 0.14), rgba(255, 255, 255, 0.055)),
    linear-gradient(160deg, rgba(8, 52, 124, 0.72), rgba(3, 22, 56, 0.92));
  box-shadow: var(--shadow);
}

.hero::after {
  content: "";
  position: absolute;
  inset: auto -8% -45% 12%;
  height: 56%;
  background: radial-gradient(circle, rgba(24, 212, 114, 0.20), transparent 58%);
  pointer-events: none;
}

.hero__content,
.hero__media {
  position: relative;
  z-index: 1;
}

.eyebrow,
.card__kicker {
  margin: 0 0 0.6rem;
  color: var(--green-400);
  font-size: 0.82rem;
  font-weight: 800;
  letter-spacing: 0.16em;
  text-transform: uppercase;
}

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

h1 {
  max-width: 13ch;
  margin-bottom: 1.1rem;
  font-size: clamp(2.8rem, 7.8vw, 6.4rem);
  line-height: 0.92;
  letter-spacing: -0.065em;
}

h2 {
  font-size: clamp(1.55rem, 2.2vw, 2.35rem);
  line-height: 1.08;
  letter-spacing: -0.035em;
}

h3 {
  font-size: 1.2rem;
}

.hero__lead {
  max-width: 56ch;
  color: var(--cyan-100);
  font-size: clamp(1.08rem, 1.6vw, 1.32rem);
}

.hero__actions {
  display: flex;
  flex-wrap: wrap;
  gap: 0.8rem;
  margin-top: 1.6rem;
}

.button {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  min-height: 46px;
  padding: 0.72rem 1.08rem;
  border: 1px solid transparent;
  border-radius: 999px;
  text-decoration: none;
  font-weight: 800;
}

.button--primary {
  background: var(--green-400);
  color: #001a0c;
  box-shadow: 0 12px 24px rgba(24, 212, 114, 0.22);
}

.button--secondary {
  border-color: var(--border);
  background: rgba(255, 255, 255, 0.08);
  color: var(--white);
}

.hero__media {
  min-height: 360px;
  border: 1px solid var(--border);
  border-radius: var(--radius);
  background:
    linear-gradient(180deg, rgba(3, 22, 56, 0.14), rgba(3, 22, 56, 0.78)),
    url("../images/gx5ams-banner-reference.png") center / cover no-repeat;
  box-shadow: inset 0 0 0 1px rgba(255,255,255,0.04), 0 18px 42px rgba(0,0,0,0.22);
  overflow: hidden;
}

.hero__logo {
  position: absolute;
  top: 1rem;
  right: 1rem;
  width: 82px;
  filter: drop-shadow(0 10px 20px rgba(0,0,0,0.34));
}

.hero__wave {
  position: absolute;
  left: 50%;
  bottom: 2.3rem;
  width: min(92%, 560px);
  transform: translateX(-50%);
  opacity: 0.86;
}

.intro-grid,
.cards-three {
  display: grid;
  grid-template-columns: repeat(3, minmax(0, 1fr));
  gap: 1rem;
  margin-top: 1rem;
}

.card,
.note-card,
.split-panel {
  border: 1px solid var(--border);
  border-radius: var(--radius);
  background: var(--card);
  box-shadow: 0 14px 34px rgba(0, 0, 0, 0.16);
}

.card {
  padding: 1.35rem;
}

.card--feature {
  grid-column: span 1;
  background: linear-gradient(145deg, rgba(255,255,255,0.16), rgba(255,255,255,0.07));
}

.card p:last-child,
.split-panel p:last-child,
.note-card p:last-child {
  margin-bottom: 0;
}

.card p,
.split-panel p,
.note-card li {
  color: var(--muted);
}

.split-panel {
  display: grid;
  grid-template-columns: 1.2fr 0.8fr;
  gap: 1.2rem;
  margin-top: 1rem;
  padding: clamp(1.35rem, 3vw, 2.35rem);
  background:
    linear-gradient(135deg, rgba(255,255,255,0.12), rgba(255,255,255,0.05)),
    rgba(6, 36, 90, 0.48);
}

.note-card {
  padding: 1.2rem;
  background: rgba(255, 255, 255, 0.08);
}

.note-card ul {
  margin: 0;
  padding-left: 1.2rem;
}

.compact-card h2 {
  font-size: 1.32rem;
}

.site-footer {
  margin-top: 3rem;
  padding: 2rem 1rem 2.4rem;
  color: var(--muted);
}

.site-footer__inner {
  display: flex;
  flex-wrap: wrap;
  justify-content: space-between;
  gap: 0.8rem;
  border-top: 1px solid var(--border);
  padding-top: 1.2rem;
}

.site-footer p {
  margin: 0;
}

.include-error {
  width: min(var(--max-width), calc(100% - 2rem));
  margin: 1rem auto;
  padding: 1rem;
  border: 1px solid rgba(255, 140, 140, 0.55);
  border-radius: 16px;
  background: rgba(255, 50, 50, 0.15);
}

@media (max-width: 900px) {
  .hero,
  .split-panel {
    grid-template-columns: 1fr;
  }

  .hero__media {
    min-height: 300px;
  }

  .intro-grid,
  .cards-three {
    grid-template-columns: 1fr;
  }
}

@media (max-width: 560px) {
  .site-header {
    padding-top: 0.8rem;
  }

  .brand img {
    width: 44px;
    height: 62px;
  }

  .brand small {
    display: none;
  }

  .main-nav {
    position: static;
  }

  .main-nav__inner {
    border-radius: 20px;
  }

  .main-nav a {
    flex: 1 1 auto;
    text-align: center;
  }

  .hero {
    padding: 1.25rem;
    border-radius: 24px;
  }

  .hero__media {
    min-height: 240px;
  }
}