:root {
  --bg-0: #070c09;
  --bg-1: #0b1410;
  --bg-2: #122018;
  --bg-3: #1a2c22;
  --line: rgba(61, 255, 181, 0.12);
  --mint: #3dffb5;
  --mint-dim: rgba(61, 255, 181, 0.16);
  --amber: #f0a202;
  --amber-dim: rgba(240, 162, 2, 0.18);
  --text: #e8f2ec;
  --text-mute: #8aa396;
  --danger: #ff5c6c;
  --ok: #3dffb5;
  --font-display: "Syne", system-ui, sans-serif;
  --font-body: "IBM Plex Sans", system-ui, sans-serif;
  --radius: 14px;
  --shadow: 0 24px 60px rgba(0, 0, 0, 0.45);
  --rail: 320px;
}

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

html,
body {
  margin: 0;
  min-height: 100%;
  background: var(--bg-0);
  color: var(--text);
  font-family: var(--font-body);
  font-size: 15px;
  line-height: 1.45;
}

body {
  background:
    radial-gradient(1200px 600px at 10% -10%, rgba(61, 255, 181, 0.08), transparent 55%),
    radial-gradient(900px 500px at 100% 0%, rgba(240, 162, 2, 0.07), transparent 50%),
    linear-gradient(180deg, var(--bg-1), var(--bg-0));
}

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

button,
input,
textarea {
  font: inherit;
  color: inherit;
}

.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 0.55rem;
  border: 0;
  border-radius: 999px;
  padding: 0.85rem 1.35rem;
  cursor: pointer;
  transition: transform 0.18s ease, background 0.18s ease, box-shadow 0.18s ease;
}

.btn:active {
  transform: translateY(1px);
}

.btn-primary {
  background: var(--mint);
  color: #04140e;
  font-weight: 600;
  box-shadow: 0 0 0 1px rgba(61, 255, 181, 0.35), 0 12px 40px rgba(61, 255, 181, 0.18);
}

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

.btn-ghost {
  background: transparent;
  border: 1px solid var(--line);
  color: var(--text);
}

.btn-amber {
  background: var(--amber);
  color: #1a1200;
  font-weight: 600;
}

.brand-mark {
  font-family: var(--font-display);
  font-weight: 800;
  letter-spacing: -0.04em;
  font-size: clamp(2.8rem, 8vw, 5.5rem);
  line-height: 0.95;
  margin: 0;
}

.brand-mark span {
  color: var(--mint);
}

.noise {
  pointer-events: none;
  position: fixed;
  inset: 0;
  opacity: 0.035;
  background-image: url("data:image/svg+xml,%3Csvg viewBox='0 0 200 200' xmlns='http://www.w3.org/2000/svg'%3E%3Cfilter id='n'%3E%3CfeTurbulence type='fractalNoise' baseFrequency='0.85' numOctaves='4' stitchTiles='stitch'/%3E%3C/filter%3E%3Crect width='100%25' height='100%25' filter='url(%23n)'/%3E%3C/svg%3E");
  z-index: 0;
}

.grid-bg {
  pointer-events: none;
  position: fixed;
  inset: 0;
  background-image:
    linear-gradient(rgba(61, 255, 181, 0.04) 1px, transparent 1px),
    linear-gradient(90deg, rgba(61, 255, 181, 0.04) 1px, transparent 1px);
  background-size: 48px 48px;
  mask-image: radial-gradient(circle at center, black, transparent 75%);
  z-index: 0;
}

@keyframes fadeUp {
  from {
    opacity: 0;
    transform: translateY(12px);
  }
  to {
    opacity: 1;
    transform: translateY(0);
  }
}

@keyframes slideIn {
  from {
    opacity: 0;
    transform: translateY(8px);
  }
  to {
    opacity: 1;
    transform: none;
  }
}

.fade-up {
  animation: fadeUp 0.55s ease both;
}