:root {
  --bg: #0b0b0f;
  --panel: #12121a;
  --text: #e9e9f1;
  --muted: #b7b7c9;
  --brand: #6ee7ff;
  --brand-2: #9b8cff;
  --accent: #31c48d;
  --border: #242437;
  --shadow: 0 10px 30px rgba(0,0,0,0.35);
}

* { box-sizing: border-box; }
html, body { height: 100%; }
body {
  margin: 0;
  font-family: ui-sans-serif, system-ui, -apple-system, Segoe UI, Roboto, "Helvetica Neue", Arial, "Noto Sans", "Apple Color Emoji", "Segoe UI Emoji";
  background: linear-gradient(180deg, #0b0b0f 0%, #0d0d14 100%);
  color: var(--text);
}

.container {
  width: 100%;
  max-width: 1100px;
  margin: 0 auto;
  padding: 0 20px;
}

.header {
  position: sticky;
  top: 0;
  backdrop-filter: saturate(140%) blur(10px);
  background: rgba(11,11,15,0.6);
  border-bottom: 1px solid var(--border);
  z-index: 50;
}
.header-inner { display: flex; align-items: center; gap: 16px; padding: 14px 0; }
.brand { display: inline-flex; align-items: center; gap: 10px; color: var(--text); text-decoration: none; }
.brand-logo { width: 28px; height: 28px; }
.brand-name { font-weight: 700; letter-spacing: 0.2px; }

.nav { margin-left: auto; display: flex; gap: 18px; }
.nav-link { color: var(--muted); text-decoration: none; font-weight: 500; }
.nav-link:hover { color: var(--text); }

.nav-toggle { display: none; margin-left: auto; background: transparent; border: 1px solid var(--border); color: var(--text); border-radius: 8px; padding: 6px 10px; }

@media (max-width: 800px) {
  .nav { position: absolute; right: 20px; top: 56px; background: var(--panel); border: 1px solid var(--border); border-radius: 12px; padding: 10px; display: none; flex-direction: column; gap: 10px; box-shadow: var(--shadow); }
  .nav.open { display: flex; }
  .nav-toggle { display: inline-block; }
}

.hero { padding: 72px 0 40px; border-bottom: 1px solid var(--border); }
.hero-inner { display: grid; grid-template-columns: 1.2fr 0.8fr; align-items: center; gap: 24px; }
.hero-title { font-size: 40px; line-height: 1.1; margin: 0 0 12px; }
.hero-subtitle { color: var(--muted); margin: 0 0 20px; }
.hero-cta { display: flex; gap: 12px; }

.btn { display: inline-flex; align-items: center; gap: 8px; padding: 10px 14px; border-radius: 10px; text-decoration: none; font-weight: 600; border: 1px solid transparent; }
.btn-primary { background: linear-gradient(135deg, var(--brand), var(--brand-2)); color: #09090d; }
.btn-secondary { background: transparent; color: var(--text); border-color: var(--border); }
.btn:hover { transform: translateY(-1px); box-shadow: var(--shadow); }

.hero-art { position: relative; min-height: 220px; }
.orb { position: absolute; border-radius: 50%; filter: blur(16px); opacity: 0.8; }
.orb-1 { width: 160px; height: 160px; background: var(--brand); top: 10%; left: 10%; }
.orb-2 { width: 120px; height: 120px; background: var(--brand-2); bottom: 10%; right: 5%; }
.orb-3 { width: 80px; height: 80px; background: var(--accent); bottom: 0; left: 30%; }

@media (max-width: 900px) {
  .hero-inner { grid-template-columns: 1fr; }
  .hero-art { order: -1; min-height: 180px; }
  .hero-title { font-size: 32px; }
}

.section { padding: 56px 0; }
.section-title { font-size: 24px; margin: 0 0 18px; }
.section-content { color: var(--muted); }

.cards { display: grid; grid-template-columns: repeat(3, 1fr); gap: 16px; }
.card { background: var(--panel); border: 1px solid var(--border); border-radius: 14px; padding: 18px; color: var(--text); box-shadow: var(--shadow); }
.card-title { margin: 0 0 8px; font-size: 18px; }
.card-text { margin: 0; color: var(--muted); }

@media (max-width: 900px) {
  .cards { grid-template-columns: 1fr; }
}

.footer { border-top: 1px solid var(--border); padding: 24px 0; }
.footer-inner { display: flex; align-items: center; justify-content: space-between; color: var(--muted); }
.back-to-top { color: var(--muted); text-decoration: none; }
.back-to-top:hover { color: var(--text); }

a { color: var(--brand); }
a:hover { filter: brightness(1.1); }