:root {
    --ink: #f2f5fa;
    --muted: #aab5c5;
    --line: #2a3445;
    --surface: #10141c;
    --soft: #171e29;
    --accent: #7fa7ff;
    --accent-dark: #a9c2ff;
    --max-width: 1100px;
  }
  
  * {
    box-sizing: border-box;
  }
  
  html {
    scroll-behavior: smooth;
  }
  
  body {
    margin: 0;
    background: var(--surface);
    color: var(--ink);
    font-family: Arial, Helvetica, sans-serif;
    font-size: 16px;
    line-height: 1.6;
  }
  
  a {
    color: var(--accent);
  }
  
  a:hover {
    color: var(--accent-dark);
  }
  
  .site-header {
    border-bottom: 1px solid var(--line);
  }
  
  .nav {
    width: min(var(--max-width), calc(100% - 48px));
    min-height: 64px;
    margin: 0 auto;
    display: flex;
    align-items: center;
    justify-content: space-between;
    gap: 24px;
  }
  
  .site-name {
    color: var(--ink);
    font-size: 1.05rem;
    font-weight: 700;
    letter-spacing: -0.02em;
    text-decoration: none;
  }
  
  .nav-links {
    display: flex;
    flex-wrap: wrap;
    gap: 20px;
  }
  
  .nav-links a {
    color: var(--muted);
    font-size: 0.95rem;
    font-weight: 600;
    text-decoration: none;
  }
  
  .nav-links a:hover,
  .nav-links a[aria-current="page"] {
    color: var(--accent);
  }
  
  main {
    width: min(var(--max-width), calc(100% - 48px));
    margin: 0 auto;
    padding: 44px 0;
  }
  
  .hero {
    max-width: 720px;
    padding: 20px 0 44px;
  }
  
  .eyebrow {
    margin-bottom: 10px;
    color: var(--accent);
    font-size: 0.8rem;
    font-weight: 700;
    letter-spacing: 0.08em;
    text-transform: uppercase;
  }
  
  h1,
  h2,
  h3,
  p {
    margin-top: 0;
  }
  
  h1 {
    max-width: 780px;
    margin-bottom: 0;
    font-size: clamp(2.6rem, 7vw, 5rem);
    letter-spacing: -0.055em;
    line-height: 1;
  }
  
  h2 {
    margin-bottom: 16px;
    font-size: 1.5rem;
    letter-spacing: -0.03em;
  }
  
  h3 {
    margin-bottom: 8px;
  }
  
  .lede {
    max-width: 620px;
    color: var(--muted);
    font-size: 1.1rem;
  }
  
  .section {
    padding: 40px 0;
    border-top: 1px solid var(--line);
  }
  
  .card-grid {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: 16px;
  }
  
  .card {
    padding: 20px;
    background: var(--soft);
    border: 1px solid var(--line);
    border-radius: 6px;
  }
  
  .card p {
    margin-bottom: 0;
    color: var(--muted);
  }
  
  .button {
    display: inline-block;
    padding: 10px 16px;
    background: var(--accent);
    border-radius: 5px;
    color: #10141c;
    font-weight: 700;
    text-decoration: none;
  }
  
  .button:hover {
    background: var(--accent-dark);
    color: #10141c;
  }
  
  .site-footer {
    width: min(var(--max-width), calc(100% - 48px));
    margin: 0 auto;
    padding: 24px 0;
    border-top: 1px solid var(--line);
    color: var(--muted);
    font-size: 0.9rem;
  }
  
  @media (max-width: 700px) {
    .nav {
      align-items: flex-start;
      flex-direction: column;
      justify-content: center;
      padding: 16px 0;
    }
  
    main {
      padding: 32px 0;
    }
  
    .hero {
      padding: 12px 0 36px;
    }
  
    .card-grid {
      grid-template-columns: 1fr;
    }
  }