:root {
  --ink: #eaf5ff;
  --ink-soft: #bad0e8;
  --line: #3e6ea8;
  --panel: rgba(13, 37, 74, 0.83);
  --panel-strong: rgba(10, 30, 62, 0.9);
  --accent: #31d8ff;
  --accent-ink: #042241;
  --max: 1040px;
}

* { box-sizing: border-box; }

html, body {
  margin: 0;
  padding: 0;
  min-height: 100%;
  font-family: "Trebuchet MS", "Segoe UI", sans-serif;
  color: var(--ink);
  background:
    radial-gradient(circle at 74% 38%, rgba(49, 216, 255, 0.34) 0 7%, rgba(49, 216, 255, 0.16) 12%, rgba(49, 216, 255, 0.05) 21%, rgba(49, 216, 255, 0) 36%),
    radial-gradient(circle at 22% 14%, rgba(134, 173, 243, 0.14) 0, rgba(134, 173, 243, 0) 34%),
    repeating-linear-gradient(180deg, rgba(255, 255, 255, 0.035) 0 1px, transparent 1px 114px),
    repeating-linear-gradient(90deg, rgba(255, 255, 255, 0.03) 0 1px, transparent 1px 215px),
    linear-gradient(180deg, #2a5f95 0%, #1f4f83 30%, #164171 56%, #123867 74%, #0f325e 100%);
  line-height: 1.55;
}

.container {
  width: min(100% - 2rem, var(--max));
  margin-inline: auto;
}

.site-header {
  position: sticky;
  top: 0;
  backdrop-filter: blur(5px);
  background: rgba(7, 23, 49, 0.68);
  border-bottom: 1px solid var(--line);
  z-index: 20;
}

.nav-wrap {
  display: flex;
  justify-content: space-between;
  align-items: center;
  min-height: 64px;
}

.brand {
  color: #f5fbff;
  text-decoration: none;
  font-weight: 900;
  letter-spacing: 0.04em;
}

nav a {
  color: var(--ink-soft);
  margin-left: 1rem;
  text-decoration: none;
  font-weight: 700;
}

nav a:hover {
  color: var(--ink);
}

.hero {
  position: relative;
  padding: 4.2rem 0 2.8rem;
}

.eyebrow {
  font-weight: 800;
  color: var(--accent);
  text-transform: uppercase;
  letter-spacing: 0.09em;
  font-size: 0.8rem;
}

h1 {
  font-size: clamp(2.3rem, 7vw, 5rem);
  line-height: 1;
  margin: 0.3rem 0 0;
  text-shadow: 0 2px 18px rgba(5, 16, 36, 0.52);
}

.lead {
  max-width: 62ch;
  margin-top: 0.8rem;
  font-size: clamp(1rem, 2.2vw, 1.2rem);
  color: var(--ink-soft);
}

.hero-video {
  margin-top: 1.1rem;
}

.hero-cta {
  display: flex;
  flex-wrap: wrap;
  gap: 0.75rem;
  margin-top: 1rem;
}

.section {
  padding: 2.1rem 0;
}

h2 {
  font-size: clamp(1.35rem, 3.2vw, 2rem);
  margin-bottom: 0.85rem;
}

.card {
  background: linear-gradient(180deg, rgba(16, 43, 82, 0.9), rgba(9, 27, 57, 0.92));
  border: 1px solid var(--line);
  border-radius: 16px;
  padding: 1rem;
  box-shadow: 0 14px 34px rgba(2, 8, 21, 0.34);
}

.video-link {
  position: relative;
  display: block;
  text-decoration: none;
  width: 100%;
  aspect-ratio: 16 / 9;
  border-radius: 12px;
  overflow: hidden;
  border: 1px solid #3f6ca8;
  box-shadow: 0 0 0 1px rgba(80, 206, 255, 0.14), 0 14px 30px rgba(4, 13, 30, 0.34);
}

.video-link img {
  width: 100%;
  height: 100%;
  object-fit: cover;
  filter: brightness(0.73) saturate(0.9);
  transition: transform 220ms ease, filter 220ms ease;
}

.video-link-overlay {
  position: absolute;
  inset: auto 0 0 0;
  display: flex;
  flex-direction: column;
  gap: 0.12rem;
  padding: 1rem;
  background: linear-gradient(180deg, rgba(1, 6, 18, 0) 0%, rgba(1, 6, 18, 0.9) 74%);
  color: #ecf8ff;
}

.video-link-kicker {
  font-size: 0.76rem;
  text-transform: uppercase;
  letter-spacing: 0.08em;
  color: #9ac5ea;
}

.video-link-title {
  font-size: clamp(1rem, 2.3vw, 1.35rem);
  font-weight: 800;
}

.video-link:hover img {
  transform: scale(1.03);
  filter: brightness(0.8) saturate(1);
}

.button {
  display: inline-block;
  border-radius: 999px;
  padding: 0.74rem 1.1rem;
  text-decoration: none;
  border: 1px solid transparent;
  font-weight: 800;
  transition: transform 160ms ease, box-shadow 160ms ease, filter 160ms ease;
}

.button-primary {
  background: linear-gradient(135deg, #78ebff 0%, var(--accent) 44%, #62b8ff 100%);
  color: var(--accent-ink);
  box-shadow: 0 0 0 1px rgba(129, 237, 255, 0.4) inset, 0 9px 22px rgba(40, 162, 220, 0.32), 0 0 24px rgba(49, 216, 255, 0.2);
}

.button-secondary {
  border-color: #678fc4;
  color: var(--ink);
  background: rgba(7, 28, 59, 0.84);
}

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

.button-primary:hover {
  filter: brightness(1.05);
}

.button-secondary:hover {
  box-shadow: 0 0 0 1px rgba(123, 188, 255, 0.25) inset, 0 8px 20px rgba(4, 13, 30, 0.28);
}

.form {
  display: grid;
  gap: 0.65rem;
  max-width: 520px;
}

input[type="email"] {
  font-size: 1rem;
  border-radius: 10px;
  border: 1px solid #4f76ad;
  color: var(--ink);
  background: rgba(6, 23, 49, 0.9);
  padding: 0.75rem;
}

input[type="email"]:focus {
  outline: none;
  border-color: #76dbff;
  box-shadow: 0 0 0 3px rgba(49, 216, 255, 0.2);
}

.tags {
  display: flex;
  gap: 0.56rem;
  padding: 0;
  list-style: none;
  flex-wrap: wrap;
}

.tags li {
  border: 1px solid #4e76ad;
  border-radius: 999px;
  padding: 0.36rem 0.76rem;
  background: rgba(8, 30, 64, 0.82);
}

.small {
  color: var(--ink-soft);
  font-size: 0.94rem;
}

.site-footer {
  margin-top: 1rem;
  border-top: 1px solid var(--line);
  padding: 1.3rem 0 2rem;
  color: #afc9e4;
}

@media (max-width: 700px) {
  nav a { margin-left: 0.7rem; }
  .hero { padding-top: 3.2rem; }
}