:root {
  --bg-color: #06090e;
  --panel-bg: rgba(16, 24, 39, 0.7);
  --border-color: rgba(100, 255, 218, 0.2);
  --accent-color: #64ffda;
  --text-primary: #e2e8f0;
  --text-secondary: #94a3b8;
  --font-main: 'Space Grotesk', sans-serif;
  --font-mono: 'Space Mono', monospace;
}

* {
  margin: 0;
  padding: 0;
  box-sizing: border-box;
}

body {
  background-color: var(--bg-color);
  color: var(--text-primary);
  font-family: var(--font-main);
  line-height: 1.6;
  min-height: 100vh;
  overflow-x: hidden;
  position: relative;
}

/* Background Effects */
.bg-mesh {
  position: fixed;
  top: 0;
  left: 0;
  width: 100vw;
  height: 100vh;
  z-index: -1;
  background-image: 
    radial-gradient(circle at 15% 50%, rgba(100, 255, 218, 0.08) 0%, transparent 50%),
    radial-gradient(circle at 85% 30%, rgba(10, 114, 255, 0.05) 0%, transparent 50%);
  filter: blur(40px);
}

.grid-overlay {
  position: fixed;
  top: 0;
  left: 0;
  width: 100vw;
  height: 100vh;
  z-index: -1;
  background-size: 50px 50px;
  background-image: 
    linear-gradient(to right, rgba(255, 255, 255, 0.02) 1px, transparent 1px),
    linear-gradient(to bottom, rgba(255, 255, 255, 0.02) 1px, transparent 1px);
}

/* Typography */
h1, h2, h3, h4 {
  font-weight: 500;
  letter-spacing: -0.03em;
}

h1 {
  font-size: clamp(3rem, 6vw, 5rem);
  line-height: 1.1;
  margin-bottom: 1.5rem;
  background: linear-gradient(135deg, #fff 0%, var(--accent-color) 100%);
  -webkit-background-clip: text;
  background-clip: text;
  -webkit-text-fill-color: transparent;
}

h2 {
  font-size: 2.2rem;
  margin-bottom: 1.5rem;
  color: #fff;
}

p {
  font-size: 1.1rem;
  color: var(--text-secondary);
  max-width: 65ch;
  margin-bottom: 1.5rem;
}

/* Layout */
.container {
  max-width: 1200px;
  margin: 0 auto;
  padding: 0 5%;
}

header {
  padding: 2rem 0;
  display: flex;
  justify-content: space-between;
  align-items: center;
}

.logo {
  font-weight: 700;
  font-size: 1.5rem;
  color: #fff;
  text-decoration: none;
  display: flex;
  align-items: center;
  gap: 0.5rem;
}

.logo span {
  color: var(--accent-color);
}

/* Hero Section */
.hero {
  padding: 8rem 0;
  text-align: center;
  display: flex;
  flex-direction: column;
  align-items: center;
}

.badge {
  display: inline-block;
  padding: 0.4rem 1rem;
  background: rgba(100, 255, 218, 0.1);
  color: var(--accent-color);
  border: 1px solid var(--border-color);
  border-radius: 50px;
  font-size: 0.85rem;
  font-weight: 500;
  letter-spacing: 1px;
  text-transform: uppercase;
  margin-bottom: 2rem;
}

.cta-group {
  display: flex;
  gap: 1rem;
  margin-top: 2rem;
}

.btn {
  display: inline-block;
  padding: 1rem 2rem;
  border-radius: 8px;
  font-weight: 500;
  text-decoration: none;
  transition: all 0.3s ease;
  font-family: var(--font-mono);
  font-size: 0.95rem;
}

.btn-primary {
  background: var(--accent-color);
  color: #000;
}

.btn-primary:hover {
  transform: translateY(-2px);
  box-shadow: 0 10px 20px rgba(100, 255, 218, 0.15);
}

.btn-secondary {
  background: transparent;
  color: #fff;
  border: 1px solid var(--border-color);
}

.btn-secondary:hover {
  background: rgba(255,255,255,0.05);
  border-color: rgba(255,255,255,0.2);
}

/* Code Block Structure */
.code-window {
  background: #0f141e;
  border: 1px solid var(--border-color);
  border-radius: 12px;
  margin: 3rem auto;
  max-width: 800px;
  text-align: left;
  overflow: hidden;
  box-shadow: 0 25px 50px -12px rgba(0, 0, 0, 0.5);
}

.code-header {
  background: #1a2233;
  padding: 0.8rem 1.5rem;
  border-bottom: 1px solid var(--border-color);
  display: flex;
  align-items: center;
  gap: 8px;
}

.traffic-light {
  width: 12px;
  height: 12px;
  border-radius: 50%;
}
.red { background: #ff5f56; }
.yellow { background: #ffbd2e; }
.green { background: #27c93f; }

pre {
  padding: 2rem;
  overflow-x: auto;
  color: #e2e8f0;
  font-family: var(--font-mono);
  font-size: 0.95rem;
  line-height: 1.5;
}

/* Features Features */
.features {
  padding: 5rem 0;
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
  gap: 2rem;
}

.feature-card {
  background: var(--panel-bg);
  border: 1px solid var(--border-color);
  padding: 2.5rem;
  border-radius: 16px;
  backdrop-filter: blur(10px);
  -webkit-backdrop-filter: blur(10px);
  transition: transform 0.3s ease, border-color 0.3s ease;
}

.feature-card:hover {
  transform: translateY(-5px);
  border-color: var(--accent-color);
}

.feature-card svg {
  color: var(--accent-color);
  width: 32px;
  height: 32px;
  margin-bottom: 1.5rem;
}

/* STIM Protocol Section */
.stim-section {
  padding: 5rem 0;
  border-top: 1px solid var(--border-color);
  margin-top: 4rem;
}

.architecture-grid {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 4rem;
  align-items: center;
  margin-top: 4rem;
}

@media (max-width: 900px) {
  .architecture-grid {
    grid-template-columns: 1fr;
    gap: 2rem;
  }
}

footer {
  text-align: center;
  padding: 4rem 0;
  border-top: 1px solid var(--border-color);
  margin-top: 5rem;
  color: var(--text-secondary);
  font-family: var(--font-mono);
  font-size: 0.9rem;
}