:root {
    --bg: #f5f7f6;
    --card: #ffffff;
    --ink: #1e2428;
    --muted: #5b6a72;
    --brand: #1f3a4a;
    --line: #d7dde0;
  }
  
  * { box-sizing: border-box; }
  
  body {
    margin: 0;
    font-family: system-ui, -apple-system, Segoe UI, Roboto, Arial, sans-serif;
    background: var(--bg);
    color: var(--ink);
    line-height: 1.6;
  }
  
  .container {
    max-width: 980px;
    margin: 0 auto;
    padding: 18px;
  }
  
  header {
    display: flex;
    align-items: center;
    justify-content: space-between;
    gap: 18px;
  }
  
  .brand {
    display: flex;
    align-items: center;
    gap: 12px;
  }
  
  .logo {
    width: 44px;
    height: 44px;
    border-radius: 12px;
    background: var(--brand);
    color: white;
    display: grid;
    place-items: center;
    font-weight: 800;
  }
  
  h1 { margin: 0; font-size: 20px; letter-spacing: 0.6px; }
  .subtitle { margin: 0; color: var(--muted); font-size: 14px; }
  
  nav a {
    color: var(--muted);
    text-decoration: none;
    margin-left: 14px;
    font-size: 14px;
  }
  nav a:hover { color: var(--ink); }
  
  .hero {
    padding-top: 28px;
    padding-bottom: 10px;
  }
  .hero h2 {
    margin: 0 0 8px 0;
    font-size: 34px;
    line-height: 1.15;
  }
  .hero p {
    margin: 0 0 14px 0;
    color: var(--muted);
    max-width: 70ch;
  }
  
  .cta {
    display: inline-block;
    background: var(--brand);
    color: white;
    text-decoration: none;
    padding: 10px 14px;
    border-radius: 12px;
    font-weight: 650;
  }
  
  .card {
    background: var(--card);
    border: 1px solid var(--line);
    border-radius: 16px;
    margin: 14px auto;
  }
  
  h3 { margin: 0 0 10px 0; font-size: 18px; }
  
  ul { margin: 0; padding-left: 18px; }
  
  label {
    display: block;
    margin: 10px 0;
    font-size: 14px;
    color: var(--muted);
  }
  
  input, textarea {
    width: 100%;
    margin-top: 6px;
    padding: 10px 12px;
    border: 1px solid var(--line);
    border-radius: 12px;
    font-size: 15px;
    background: #fff;
  }
  
  button {
    width: 100%;
    margin-top: 10px;
    padding: 12px 14px;
    background: var(--brand);
    color: white;
    border: 0;
    border-radius: 12px;
    font-size: 15px;
    font-weight: 650;
    cursor: pointer;
  }
  button:hover { opacity: 0.92; }
  
  .small { font-size: 13px; color: var(--muted); }
  
  .footer {
    color: var(--muted);
    padding: 24px 18px;
  }