:root {
      --brand: #5faaa3;
      --bg: #fbfbfb;
      --bgstart: #EBF6F7;
      --text: #0b0b0b;
      --muted: rgba(0, 0, 0, 0.6);
      --radius: 28px;
  }

  .dark-only {
      display: none;
  }

  .light-only {
      display: block;
  }

  @media (prefers-color-scheme: dark) {
      :root {
          --brand: #7bd6cd;
          --bg: #0b0b0b;
          --text: #fbfbfb;
          --muted: rgba(255, 255, 255, 0.6);
          --radius: 28px;
          --bgstart: #091E21;
      }

      .btn {
          color: black !important;
      }

      .logo {
          color: #ffffff;
      }

      .light-only {
          display: none;
      }

      .dark-only {
          display: block;
      }
  }

  html,
  body {
      height: 100%;
      margin: 0;
  }

  body {
      background:
          url('bgup.png') top center no-repeat,
          url('bgdown.png') bottom center no-repeat,
          url('bgleft.png') center left no-repeat,
          url('bgright.png') center right no-repeat,
          linear-gradient(to bottom, var(--bgstart), var(--bg));

      font-family: Inter, system-ui, -apple-system, "Segoe UI", Roboto;
      color: var(--text);
      display: flex;
      align-items: center;
      justify-content: center;
      padding: 0 20px;
  }

  /* TOP BAR */
  .top-bar {
      position: fixed;
      top: 0;
      left: 0;
      width: 100%;
      background: var(--brand);
      display: flex;
      align-items: center;
      padding-left: 12px;
      padding-left: 12px;
      z-index: 40;
      height: 0px;
      animation: growBar 1.5s ease forwards;
  }

  main {
      text-align: center;
      width: 100%;
      max-width: 820px;
      margin-top: 120px;
  }


  .logo-container {
      display: flex;
      justify-content: center;
      align-items: center;
      width: 100%;
  }

  .logo {
      max-width: 520px;
      width: 60%;
      padding-bottom: 50px;
      height: auto;
  }

  h1 {
      font-size: 1.35rem;
      margin: 20px 0 8px;
      font-weight: 600;
  }

  p.lead {
      color: var(--muted);
      margin-bottom: 42px;
  }

  .btn {
      display: inline-block;
      text-decoration: none;
      padding: 14px 36px;
      border-radius: var(--radius);
      background: var(--brand);
      color: white;
      font-weight: 500;
      box-shadow: 0 6px 18px rgba(95, 170, 163, 0.16);
      transition: all .14s ease;
  }

  .btn:hover {
      transform: translateY(-3px) !important;
      box-shadow: 0 10px 28px rgba(95, 170, 163, 0.20);
  }

  .fade-in {
      opacity: 0;
      animation: fadeIn 2s ease forwards;
  }

  @keyframes fadeIn {
      to {
          opacity: 1;
      }
  }

  @keyframes growBar {
      to {
          height: 10px;
      }
  }

  .fade-up {
      opacity: 0;
      transform: translateY(20px);
      animation: fadeUp 0.9s ease-out forwards;
  }

  @keyframes fadeUp {
      0% {
          opacity: 0;
          transform: translateY(30px);
      }

      80% {
          opacity: 0.6;
      }

      100% {
          opacity: 1;
          transform: translateY(0);
      }
  }