* {
    margin: 0;
    padding: 0;
    box-sizing: border-box;
    font-family: system-ui, -apple-system, Segoe UI, Roboto, Arial, sans-serif;
  }
  
  body {
    background: radial-gradient(circle at top, #0b1020, #05070f);
    color: #fff;
    min-height: 100vh;
  }
  
  /* ---------- Navbar ---------- */
  .navbar {
    width: 100%;
    display: flex;
    align-items: center;
    justify-content: space-between;
    padding: 18px 40px;
    position: sticky;
    top: 0;
    z-index: 999;
    backdrop-filter: blur(14px);
    background: rgba(5, 7, 15, 0.55);
    border-bottom: 1px solid rgba(255, 255, 255, 0.08);
  }
  
  .logo {
    font-weight: 800;
    letter-spacing: 2px;
    display: flex;
    align-items: center;
    gap: 10px;
  }
  
  .dot {
    width: 10px;
    height: 10px;
    border-radius: 50%;
    background: #35d3ff;
    box-shadow: 0 0 15px #35d3ff;
  }
  
  .nav-links {
    display: flex;
    gap: 22px;
  }
  
  .nav-links a {
    text-decoration: none;
    color: rgba(255, 255, 255, 0.78);
    font-weight: 600;
    font-size: 14px;
    transition: 0.25s;
  }
  
  .nav-links a:hover {
    color: #fff;
  }
  
  .nav-links a.active {
    color: #35d3ff;
  }
  
  /* ---------- Buttons ---------- */
  .btn {
    text-decoration: none;
    padding: 12px 16px;
    border-radius: 14px;
    font-weight: 700;
    font-size: 14px;
    display: inline-block;
    transition: 0.25s;
    border: none;
    cursor: pointer;
  }
  
  .btn-primary {
    background: linear-gradient(90deg, #35d3ff, #9b5cff);
    color: #05070f;
  }
  
  .btn-primary:hover {
    transform: translateY(-2px);
    box-shadow: 0 10px 35px rgba(53, 211, 255, 0.25);
  }
  
  .btn-outline {
    border: 1px solid rgba(255, 255, 255, 0.2);
    color: #fff;
    background: transparent;
  }
  
  .btn-outline:hover {
    background: rgba(255, 255, 255, 0.08);
  }
  
  /* ---------- Hero ---------- */
  .hero {
    padding: 45px 40px 20px;
  }
  
  .hero-content h1 {
    font-size: 34px;
    margin-bottom: 8px;
  }
  
  .hero-content p {
    opacity: 0.75;
    max-width: 720px;
    line-height: 1.6;
  }
  
  /* ---------- Main Container ---------- */
  .container {
    padding: 20px 40px 60px;
    max-width: 1200px;
    margin: auto;
  }
  
  /* ---------- Cards Grid ---------- */
  .grid {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: 16px;
    margin-top: 18px;
  }
  
  .card {
    padding: 18px;
    border-radius: 22px;
    background: rgba(255, 255, 255, 0.06);
    border: 1px solid rgba(255, 255, 255, 0.12);
    transition: 0.25s;
    position: relative;
    overflow: hidden;
  }
  
  .card:hover {
    transform: translateY(-4px);
    background: rgba(255, 255, 255, 0.08);
  }
  
  .card h3 {
    font-size: 18px;
    margin-bottom: 10px;
  }
  
  .card p {
    opacity: 0.78;
    line-height: 1.6;
    font-size: 14px;
  }
  
  .tag {
    display: inline-block;
    padding: 6px 10px;
    border-radius: 999px;
    font-weight: 800;
    font-size: 12px;
    margin-bottom: 12px;
    border: 1px solid rgba(255, 255, 255, 0.15);
  }
  
  .tag.leo {
    color: #35d3ff;
  }
  
  .tag.meo {
    color: #9b5cff;
  }
  
  .tag.geo {
    color: #ffcc66;
  }
  
  .details {
    margin-top: 14px;
    display: none;
    opacity: 0.9;
  }
  
  .details ul {
    margin-top: 10px;
    padding-left: 18px;
  }
  
  .details li {
    margin-bottom: 8px;
    opacity: 0.8;
  }
  
  .read-btn {
    margin-top: 14px;
    width: 100%;
  }
  
  /* ---------- Quiz ---------- */
  .quiz {
    margin-top: 30px;
    padding: 18px;
    border-radius: 22px;
    background: rgba(255, 255, 255, 0.06);
    border: 1px solid rgba(255, 255, 255, 0.12);
  }
  
  .quiz h2 {
    font-size: 22px;
    margin-bottom: 6px;
  }
  
  .muted {
    opacity: 0.7;
    margin-bottom: 14px;
  }
  
  .q {
    padding: 14px;
    border-radius: 18px;
    border: 1px solid rgba(255, 255, 255, 0.12);
    background: rgba(0, 0, 0, 0.2);
    margin-bottom: 12px;
  }
  
  .q h4 {
    margin-bottom: 10px;
    font-size: 15px;
  }
  
  .option {
    display: flex;
    gap: 10px;
    align-items: center;
    padding: 8px;
    border-radius: 14px;
    cursor: pointer;
    transition: 0.2s;
  }
  
  .option:hover {
    background: rgba(255, 255, 255, 0.06);
  }
  
  .quiz-result {
    margin-top: 12px;
    font-weight: 800;
    font-size: 16px;
  }
  
  /* ---------- Footer ---------- */
  .footer {
    padding: 20px;
    text-align: center;
    opacity: 0.6;
    border-top: 1px solid rgba(255, 255, 255, 0.08);
  }
  
  /* ---------- Responsive ---------- */
  @media (max-width: 1000px) {
    .grid {
      grid-template-columns: 1fr;
    }
    .navbar {
      padding: 16px 18px;
    }
    .container {
      padding: 20px 18px 60px;
    }
    .hero {
      padding: 30px 18px 10px;
    }
  }