:root {
      --bg-color: #050505;
      --card-bg: #111111;
      --border-color: #333333;
      --accent: #72c2ff;
      --text-main: #f5f5f5;
      --text-muted: #72c2ff;
      --link: #72c2ff;
      --input-bg: #050608;
    }

    * {
      box-sizing: border-box;
      margin: 0;
      padding: 0;
    }

   
    .page {
      width: 100%;
      max-width: 1100px;
    }

    header {
      margin-bottom: 2rem;
      border-bottom: 1px solid var(--border-color);
      padding-bottom: 1rem;
    }

    .site-title {
      font-size: clamp(2rem, 4vw, 2.8rem);
      letter-spacing: 0.08em;
      text-transform: uppercase;
    }

    .site-subtitle {
      margin-top: 0.5rem;
      color: var(--text-muted);
      font-size: 0.95rem;
    }

    .layout {
      display: grid;
      grid-template-columns: minmax(0, 3fr) minmax(240px, 1.2fr);
      gap: 2rem;
      align-items: flex-start;
    }

    @media (max-width: 800px) {
      .layout {
        grid-template-columns: 1fr;
      }
    }

    /* MAIN ARC CONTENT */
    .main-content {
      background: rgba(0, 0, 0, 0.4);
      border: 1px solid var(--border-color);
      border-radius: 1rem;
      padding: 1.75rem 1.5rem;
    }

    .main-content h1 {
      font-size: 1.8rem;
      margin-bottom: 0.75rem;
      letter-spacing: 0.06em;
      text-transform: uppercase;
    }

    .main-content p {
      margin-bottom: 1rem;
      line-height: 1.6;
    }

    .main-content ul {
      margin-left: 1.2rem;
      margin-bottom: 1.5rem;
      line-height: 1.6;
    }

    .main-content li + li {
      margin-top: 0.35rem;
    }

    .highlight {
      color: var(--accent);
      font-weight: 500;
    }

    .tagline-block {
      border-left: 3px solid var(--accent);
      padding-left: 1rem;
      margin: 0.75rem 0 1.5rem;
      color: var(--text-muted);
      font-size: 0.95rem;
    }

    .tagline-block strong {
      color: var(--accent);
      text-transform: uppercase;
      letter-spacing: 0.09em;
      font-size: 0.8rem;
      display: block;
      margin-bottom: 0.25rem;
    }

    /* FORM */
    .arc-form {
      margin-top: 1rem;
      display: grid;
      gap: 0.75rem;
    }

    .field-group {
      display: flex;
      flex-direction: column;
      gap: 0.35rem;
    }

    label {
      font-size: 0.9rem;
      text-transform: uppercase;
      letter-spacing: 0.08em;
      color: var(--text-muted);
    }

    input[type="text"],
    input[type="email"] {
      background: var(--input-bg);
      border-radius: 0.5rem;
      border: 1px solid var(--border-color);
      padding: 0.6rem 0.7rem;
      color: var(--text-main);
      font: inherit;
    }

    input[type="text"]::placeholder,
    input[type="email"]::placeholder {
      color: #777;
    }

    .arc-note {
      font-size: 0.8rem;
      color: var(--text-muted);
      margin-top: 0.25rem;
    }

    .btn-primary {
      margin-top: 0.5rem;
      border: 1px solid var(--accent);
      border-radius: 999px;
      padding: 0.6rem 1.4rem;
      background: linear-gradient(135deg, #262017, #111);
      color: var(--text-main);
      font-size: 0.9rem;
      letter-spacing: 0.08em;
      text-transform: uppercase;
      cursor: pointer;
      align-self: flex-start;
    }

    .btn-primary:hover {
      filter: brightness(1.08);
    }

    .thankyou {
      display: none;
      margin-top: 0.75rem;
      font-size: 0.9rem;
      color: var(--accent);
    }

    /* Sidebar */
    .sidebar {
      display: flex;
      flex-direction: column;
      gap: 1rem;
    }

    .sidebar-card {
      background: var(--card-bg);
      border: 1px solid var(--border-color);
      border-radius: 1rem;
      padding: 1rem 1.1rem;
    }

    .sidebar-card h3 {
      font-size: 1rem;
      text-transform: uppercase;
      letter-spacing: 0.15em;
      margin-bottom: 0.75rem;
      color: var(--accent);
    }

    .sidebar-card ul {
      list-style: none;
    }

    .sidebar-card li + li {
      margin-top: 0.4rem;
    }

    a {
      color: var(--link);
      text-decoration: none;
    }
    a:visited {
      color: #00BFA5;
    }

    a:hover {
      text-decoration: underline;
    }

    footer.site-footer {
      text-align: center;
      color: var(--text-muted);
      margin-top: 2.5rem;
      padding: 1.5rem 0 0.5rem;
      font-size: 0.9rem;
    }
.hidden {
  display: none;
}