/* ---
Theme: AI / Modern Theme
Font: Poppins (Sans-serif)
Primary Colors: Dark charcoal, vibrant cyan, cool greys
--- */

/* CSS Variables */
:root {
  --bg-color: #0d1117;
  --surface-color: #161b22;
  --primary-accent: #00e5ff;
  --primary-accent-hover: #00b8cc;
  --text-color: #c9d1d9;
  --text-color-secondary: #8b949e;
  --border-color: #30363d;
  --font-family-sans: 'Poppins', sans-serif;
  --glow-color: rgba(0, 229, 255, 0.2);
}

/* Global Reset & Base Styles */
* {
  margin: 0;
  padding: 0;
  box-sizing: border-box;
}

body {
  font-family: var(--font-family-sans);
  background-color: var(--bg-color);
  color: var(--text-color);
  line-height: 1.7;
  font-size: 16px;
}

h1, h2, h3, h4, h5, h6 {
  color: var(--text-color);
  margin-bottom: 1rem;
  line-height: 1.3;
  font-weight: 600;
}

h1 { font-size: 2.6rem; color: var(--primary-accent); }
h2 { font-size: 2.0rem; margin-top: 2.5rem; padding-bottom: 0.5rem; border-bottom: 1px solid var(--border-color); }
h3 { font-size: 1.5rem; color: var(--text-color); }

p {
  margin-bottom: 1.2rem;
  color: var(--text-color-secondary);
}

a {
  color: var(--primary-accent);
  text-decoration: none;
  transition: color 0.3s ease;
}

a:hover {
  color: var(--primary-accent-hover);
  text-decoration: underline;
}

.container {
  max-width: 1200px;
  margin: 0 auto;
  padding: 0 20px;
}

/* Header & Navigation */
.site-header {
  background-color: rgba(13, 17, 23, 0.8);
  backdrop-filter: blur(10px);
  padding: 1rem 0;
  border-bottom: 1px solid var(--border-color);
  position: sticky;
  top: 0;
  z-index: 1000;
}

.header-container {
  display: flex;
  justify-content: space-between;
  align-items: center;
}

.site-title {
  font-size: 1.6rem;
  font-weight: 700;
  color: var(--text-color);
}

.site-title a {
  text-decoration: none;
  color