:root {
      --bg: #0f1c2e;
      --bg-2: #0c1422;
      --accent: #ffb347;
      --accent-2: #2ad1a3;
      --text: #f2f5f9;
      --muted: #b3c0d4;
      --card: rgba(255, 255, 255, 0.06);
      --stroke: rgba(255, 255, 255, 0.12);
    }
    * { box-sizing: border-box; }
    body {
      margin: 0;
      color: var(--text);
      background: radial-gradient(1200px 800px at 15% 10%, #1b2f4f 0%, var(--bg) 55%, var(--bg-2) 100%);
      font-family: "Avenir Next", "Gill Sans", "Trebuchet MS", sans-serif;
      line-height: 1.5;
    }
    .bg-shape {
      position: fixed;
      inset: 0;
      pointer-events: none;
      background:
        radial-gradient(260px 260px at 85% 20%, rgba(255, 179, 71, 0.25), transparent 60%),
        radial-gradient(340px 340px at 10% 80%, rgba(42, 209, 163, 0.22), transparent 60%);
      filter: blur(10px);
      z-index: 0;
    }
.site-nav {
  position: sticky;
  top: 0;
  z-index: 10;
  background: rgba(12, 20, 34, 0.85);
  backdrop-filter: blur(8px);
  border-bottom: 1px solid var(--stroke);
}

/* wrapper */
.site-nav-inner {
  max-width: 1100px;
  margin: 0 auto;
  padding: 12px 20px;
  display: flex;
  align-items: center;
  gap: 16px;
}

/* ===== MOBILE DEFAULT ===== */

/* toggle widoczny */
.site-nav .nav-toggle {
  display: block;
  margin-left: auto;
}

/* menu schowane */
.site-nav .nav {
  position: absolute;
  top: 100%;
  left: 0;
  right: 0;
  background: var(--bg-2);
  border-bottom: 1px solid var(--stroke);
  padding: 12px 20px;
  display: none;
}

/* menu po kliknięciu */
.site-nav .nav.open {
  display: block;
}

.site-nav .nav ul {
  list-style: none;
  margin: 0;
  padding: 0;
  display: flex;
  flex-direction: column;
  gap: 12px;
}

/* ===== DESKTOP ===== */
@media (min-width: 769px) {

  /* toggle znika */
  .site-nav .nav-toggle {
    display: none;
  }

  /* menu zawsze widoczne */
  .site-nav .nav {
    position: static;
    display: block;
    margin-left: auto;
    padding: 0;
    background: none;
    border: none;
  }

  .site-nav .nav ul {
    flex-direction: row;
    gap: 16px;
  }
}
   header:not(.site-nav) {
      position: relative;
      z-index: 1;
      padding: 64px 20px 32px;
      text-align: center;
      animation: fadeIn 0.8s ease-out;
    }
    .badge {
      display: inline-flex;
      gap: 8px;
      align-items: center;
      padding: 6px 14px;
      border-radius: 999px;
      background: rgba(255, 255, 255, 0.08);
      border: 1px solid var(--stroke);
      color: var(--muted);
      font-size: 14px;
      text-transform: uppercase;
      letter-spacing: 0.08em;
    }
    h1 {
      margin: 18px 0 10px;
      font-family: "Futura", "Trebuchet MS", sans-serif;
      font-size: clamp(32px, 6vw, 56px);
      letter-spacing: 0.02em;
    }
    .subtitle {
      max-width: 820px;
      margin: 0 auto 24px;
      color: var(--muted);
      font-size: clamp(16px, 2.8vw, 20px);
    }
    .cta {
      display: flex;
      justify-content: center;
      flex-wrap: wrap;
      gap: 12px;
    }
    .btn {
      padding: 12px 18px;
      border-radius: 12px;
      text-decoration: none;
      color: #101722;
      background: var(--accent);
      font-weight: 600;
      box-shadow: 0 6px 24px rgba(255, 179, 71, 0.25);
      transition: transform 0.2s ease, box-shadow 0.2s ease;
    }
    .btn.secondary {
      background: transparent;
      color: var(--text);
      border: 1px solid var(--stroke);
      box-shadow: none;
    }
    .btn:hover {
      transform: translateY(-2px);
      box-shadow: 0 10px 30px rgba(255, 179, 71, 0.35);
    }
    main {
      position: relative;
      z-index: 1;
      padding: 10px 20px 60px;
      max-width: 1100px;
      margin: 0 auto;
    }
    .grid {
      display: grid;
      grid-template-columns: repeat(auto-fit, minmax(240px, 1fr));
      gap: 18px;
      margin-top: 20px;
    }
    .card {
      background: var(--card);
      border: 1px solid var(--stroke);
      border-radius: 16px;
      padding: 18px;
      backdrop-filter: blur(6px);
      min-height: 160px;
      animation: rise 0.6s ease-out;
    }
    .card h3 {
      margin-top: 0;
      font-family: "Futura", "Trebuchet MS", sans-serif;
      font-size: 18px;
    }
    .section-title {
      margin-top: 36px;
      font-family: "Futura", "Trebuchet MS", sans-serif;
      font-size: 22px;
    }
    .highlight {
      color: var(--accent-2);
      font-weight: 700;
    }
    .note {
      font-size: 14px;
      color: var(--muted);
      border-left: 3px solid var(--accent-2);
      padding-left: 12px;
      margin-top: 8px;
    }
    footer {
      position: relative;
      z-index: 1;
      padding: 28px 20px 40px;
      text-align: center;
      color: var(--muted);
      font-size: 13px;
    }
    a { color: inherit; }

    @keyframes fadeIn {
      from { opacity: 0; transform: translateY(10px); }
      to { opacity: 1; transform: translateY(0); }
    }
    @keyframes rise {
      from { opacity: 0; transform: translateY(14px); }
      to { opacity: 1; transform: translateY(0); }
    }
    @media (prefers-reduced-motion: reduce) {
      * { animation: none !important; transition: none !important; }
    }