/* ========== CSS Variables ========== */
:root {
  --bg-deep: #06121f;
  --bg-ocean-1: #071e2e;
  --bg-ocean-2: #052233;
  --ocean-azure: #0ea5e9;
  --ocean-teal: #14b8a6;
  --ocean-cyan: #22d3ee;
  --text-strong: #e7f6ff;
  --text-muted: #b7d7e6;
  --glass: rgba(255, 255, 255, 0.06);
  --glass-strong: rgba(255, 255, 255, 0.12);
  --border: rgba(255, 255, 255, 0.14);
  --shadow-1: 0 10px 30px rgba(0, 0, 0, 0.35);
  --shadow-2: 0 30px 80px rgba(0, 0, 0, 0.45);
  --max-w: 1200px;
}

/* ========== Reset ========== */
*,
*::before,
*::after { box-sizing: border-box; }
html, body { height: 100%; }
body {
  margin: 0;
  font-family: 'Inter', ui-sans-serif, system-ui, -apple-system, Segoe UI, Roboto, Arial, 'Apple Color Emoji', 'Segoe UI Emoji';
  color: var(--text-strong);
  background:
    radial-gradient(1200px 800px at 20% -10%, rgba(20, 184, 166, 0.14), transparent 60%),
    radial-gradient(1200px 800px at 100% 0%, rgba(14, 165, 233, 0.12), transparent 60%),
    linear-gradient(180deg, var(--bg-ocean-1) 0%, var(--bg-deep) 60%, var(--bg-ocean-2) 100%);
  line-height: 1.5;
  -webkit-font-smoothing: antialiased;
  -moz-osx-font-smoothing: grayscale;
}
img, svg { display: block; max-width: 100%; }
button, a { cursor: pointer; }

.skip-link {
  position: absolute;
  left: -999px;
  top: auto;
  width: 1px;
  height: 1px;
  overflow: hidden;
}
.skip-link:focus {
  left: 16px;
  top: 16px;
  width: auto;
  height: auto;
  background: #000;
  color: #fff;
  padding: 8px 12px;
  border-radius: 8px;
}

/* ========== Layout ========== */
.container {
  width: 100%;
  max-width: var(--max-w);
  margin-inline: auto;
  padding: 0 24px;
}

/* ========== Header ========== */
.site-header {
  position: sticky;
  top: 0;
  z-index: 50;
  background: linear-gradient(to bottom, rgba(6, 18, 31, 0.95), rgba(6, 18, 31, 0.65) 60%, transparent);
  backdrop-filter: saturate(140%) blur(10px);
  border-bottom: 1px solid rgba(255, 255, 255, 0.06);
}
.header-inner {
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 16px 0;
  gap: 16px;
}
.brand {
  display: inline-flex;
  align-items: center;
  gap: 12px;
  font-weight: 700;
  letter-spacing: 0.2px;
}
.logo {
  width: 36px;
  height: 36px;
  display: grid;
  place-items: center;
  border-radius: 12px;
  color: #001b22;
  background: radial-gradient(120% 120% at 20% 20%, #22d3ee, #14b8a6 40%, #0ea5e9 80%);
  box-shadow: 0 0 40px rgba(34, 211, 238, 0.35), inset 0 0 20px rgba(255, 255, 255, 0.35);
  font-weight: 800;
}
.brand-name { font-size: 16px; }
.nav ul {
  display: flex;
  list-style: none;
  margin: 0;
  padding: 0;
  gap: 20px;
}
.nav a {
  color: var(--text-muted);
  text-decoration: none;
  font-weight: 500;
}
.nav a:hover { color: var(--text-strong); }
.actions { display: flex; gap: 12px; }

/* ========== Buttons ========== */
.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 10px;
  padding: 10px 16px;
  border-radius: 12px;
  border: 1px solid var(--border);
  text-decoration: none;
  color: var(--text-strong);
  transition: transform 180ms ease, box-shadow 180ms ease, background 180ms ease, color 180ms ease;
  will-change: transform;
}
.btn:hover { transform: translateY(-1px); box-shadow: var(--shadow-1); }
.btn:active { transform: translateY(0); }
.btn-primary {
  border-color: transparent;
  background: linear-gradient(135deg, rgba(14, 165, 233, 0.25), rgba(20, 184, 166, 0.25));
  box-shadow: inset 0 0 0 1px rgba(255, 255, 255, 0.22), 0 10px 30px rgba(14, 165, 233, 0.2);
}
.btn-secondary {
  background: rgba(255, 255, 255, 0.06);
}
.btn-ghost {
  background: transparent;
  border-color: rgba(255, 255, 255, 0.22);
  color: var(--text-muted);
}
.btn-lg { padding: 14px 20px; border-radius: 14px; font-weight: 600; }

/* ========== Hero ========== */
.hero {
  position: relative;
  overflow: clip;
}
.ocean-backdrop {
  position: absolute;
  inset: 0;
  overflow: hidden;
  pointer-events: none;
}
.waves {
  position: absolute;
  bottom: -1px;
  left: 0;
  width: 100%;
  height: 220px;
  filter: blur(0.4px);
  opacity: 0.7;
}
.orb-field {
  position: absolute;
  inset: -10% -10% -10% -10%;
  z-index: 0;
}
.hero-inner {
  position: relative;
  z-index: 1;
  padding: 96px 0 80px 0;
  text-align: center;
}
.hero h1 {
  font-size: clamp(32px, 5vw, 56px);
  line-height: 1.06;
  margin: 0;
  letter-spacing: -0.02em;
  text-shadow: 0 2px 40px rgba(14, 165, 233, 0.22);
}
.subtitle {
  margin: 18px auto 28px auto;
  color: var(--text-muted);
  font-size: clamp(16px, 2.4vw, 20px);
  max-width: 820px;
}
.cta { display: flex; gap: 12px; align-items: center; justify-content: center; margin-top: 8px; }
.hero-highlights {
  display: flex;
  flex-wrap: wrap;
  gap: 12px 16px;
  align-items: center;
  justify-content: center;
  margin: 26px 0 0;
  padding: 0;
  list-style: none;
  color: var(--text-muted);
}
.hero-highlights li {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  padding: 6px 10px;
  border-radius: 999px;
  background: rgba(255, 255, 255, 0.06);
  border: 1px solid rgba(255, 255, 255, 0.08);
}

/* ========== Sections ========== */
.section { padding: 80px 0; position: relative; }
.section-inner { position: relative; z-index: 1; }
.section h2 {
  margin: 0 0 10px 0;
  font-size: clamp(24px, 3.2vw, 36px);
  letter-spacing: -0.01em;
}
.section-subtitle {
  color: var(--text-muted);
  margin: 0 0 28px 0;
}

.cards {
  display: grid;
  grid-template-columns: repeat(3, minmax(0, 1fr));
  gap: 20px;
}
.card {
  background: linear-gradient(180deg, rgba(255, 255, 255, 0.06), rgba(255, 255, 255, 0.04));
  border: 1px solid rgba(255, 255, 255, 0.1);
  border-radius: 20px;
  padding: 22px;
  box-shadow: var(--shadow-2);
  transition: transform 220ms ease, box-shadow 220ms ease, border-color 220ms ease;
  position: relative;
  overflow: hidden;
}
.card::after {
  content: '';
  position: absolute;
  inset: 0;
  background: radial-gradient(600px 220px at 20% -10%, rgba(20, 184, 166, 0.18), transparent 60%),
              radial-gradient(600px 220px at 110% 10%, rgba(14, 165, 233, 0.18), transparent 60%);
  opacity: 0;
  transition: opacity 220ms ease;
  pointer-events: none;
}
.card:hover {
  transform: translateY(-4px);
  border-color: rgba(255, 255, 255, 0.18);
}
.card:hover::after { opacity: 1; }
.card-icon {
  width: 44px; height: 44px; border-radius: 12px;
  display: grid; place-items: center;
  color: var(--ocean-cyan);
  background: linear-gradient(135deg, rgba(34, 211, 238, 0.12), rgba(14, 165, 233, 0.12));
  border: 1px solid rgba(255, 255, 255, 0.18);
  margin-bottom: 14px;
}
.card h3 { margin: 0 0 8px 0; font-size: 18px; }
.card p { margin: 0 0 12px 0; color: var(--text-muted); }
.features {
  margin: 0; padding: 0; list-style: none; color: var(--text-muted);
  display: grid; gap: 6px;
}
.features li::before {
  content: '•';
  color: var(--ocean-cyan);
  margin-right: 8px;
}

.grid-why {
  display: grid;
  grid-template-columns: repeat(3, minmax(0, 1fr));
  gap: 20px;
}
.why-item {
  background: rgba(255, 255, 255, 0.04);
  border: 1px solid rgba(255, 255, 255, 0.1);
  border-radius: 16px;
  padding: 18px;
}
.why-item h3 { margin: 0 0 8px 0; font-size: 18px; }
.why-item p { margin: 0; color: var(--text-muted); }

.cta-band {
  background:
    radial-gradient(900px 400px at 20% 20%, rgba(14, 165, 233, 0.12), transparent 60%),
    radial-gradient(900px 400px at 80% 50%, rgba(20, 184, 166, 0.12), transparent 60%);
  border-top: 1px solid rgba(255, 255, 255, 0.08);
  border-bottom: 1px solid rgba(255, 255, 255, 0.08);
}
.cta-inner { text-align: center; }
.cta-inner h2 { margin: 0 0 8px 0; }
.cta-inner p { margin: 0 0 16px 0; color: var(--text-muted); }

/* ========== Footer ========== */
.site-footer {
  margin-top: 60px;
  border-top: 1px solid rgba(255, 255, 255, 0.08);
  background: linear-gradient(180deg, rgba(255, 255, 255, 0.03), transparent);
}
.footer-inner {
  display: grid;
  grid-template-columns: 1fr auto;
  gap: 20px;
  padding: 28px 0;
}
.footer-brand { display: inline-flex; align-items: center; gap: 12px; }
.footer-columns {
  display: grid;
  grid-template-columns: repeat(2, minmax(140px, 1fr));
  gap: 20px;
}
.footer-col h4 { margin: 0 0 10px 0; font-size: 14px; color: var(--text-muted); }
.footer-col ul { margin: 0; padding: 0; list-style: none; display: grid; gap: 8px; }
.footer-col a { color: var(--text-strong); text-decoration: none; }
.footer-col a:hover { color: var(--ocean-cyan); }
.legal {
  border-top: 1px solid rgba(255, 255, 255, 0.08);
  color: var(--text-muted);
}
.legal-inner { padding: 14px 0; text-align: center; }

/* ========== Orbs ========== */
.orb {
  position: absolute;
  width: 42vmin;
  height: 42vmin;
  border-radius: 50%;
  pointer-events: none;
  mix-blend-mode: screen;
  filter: blur(14px) saturate(140%);
  opacity: 0.5;
  background: radial-gradient(circle at 30% 30%, rgba(34, 211, 238, 0.9), rgba(14, 165, 233, 0.65) 40%, rgba(20, 184, 166, 0.4) 70%, rgba(2, 68, 89, 0.2) 100%);
  box-shadow:
    0 0 120px rgba(34, 211, 238, 0.28),
    inset 0 0 80px rgba(255, 255, 255, 0.22);
}
.orb--teal {
  background: radial-gradient(circle at 30% 30%, rgba(20, 184, 166, 0.9), rgba(14, 165, 233, 0.45) 45%, rgba(34, 211, 238, 0.35) 75%, rgba(2, 68, 89, 0.2) 100%);
}
.orb--cyan {
  background: radial-gradient(circle at 30% 30%, rgba(14, 165, 233, 0.95), rgba(34, 211, 238, 0.55) 45%, rgba(20, 184, 166, 0.4) 75%, rgba(2, 68, 89, 0.2) 100%);
}

/* ========== Media Queries ========== */
@media (max-width: 960px) {
  .cards { grid-template-columns: 1fr 1fr; }
  .grid-why { grid-template-columns: 1fr 1fr; }
  .footer-inner { grid-template-columns: 1fr; }
  .actions { display: none; }
}
@media (max-width: 640px) {
  .cards { grid-template-columns: 1fr; }
  .grid-why { grid-template-columns: 1fr; }
  .hero-inner { padding: 80px 0 64px 0; }
  .cta { flex-direction: column; }
  .nav { display: none; }
}

/* ========== Reduced Motion ========== */
@media (prefers-reduced-motion: reduce) {
  .btn, .card { transition: none; }
  .orb { filter: blur(10px) saturate(120%); }
}