* {
      margin: 0;
      padding: 0;
      box-sizing: border-box;
      font-family: 'Outfit', sans-serif;
    }

    body {
      background: linear-gradient(135deg, #1f1c2c, #928dab);
      color: white;
    }

    header {
      padding: 2rem 2rem 1rem;
      text-align: center;
      background: rgba(0, 0, 0, 0.3);
      border-bottom: 2px solid #00bcd4;
    }

    header h1 {
      font-size: 2.5rem;
      font-weight: 700;
    }

    nav {
      text-align: center;
      margin-top: 1rem;
    }

    nav button {
      background: #00e5ff;
      border: none;
      color: #1f1c2c;
      font-weight: bold;
      padding: 0.6rem 1.2rem;
      margin: 0 0.5rem;
      border-radius: 6px;
      cursor: pointer;
      transition: background 0.3s;
    }

    nav button:hover {
      background: #00c2d3;
    }

    main, .about-section {
      padding: 2rem;
    }

    .intro {
      margin-bottom: 1.5rem;
      font-size: 1.1rem;
      color: #e0e0e0;
    }

    .branch-heading {
      font-size: 1.6rem;
      font-weight: bold;
      margin-bottom: 1rem;
      color: #00e5ff;
    }

    .btn-group {
      display: flex;
      flex-wrap: wrap;
      gap: 1rem;
      margin-bottom: 2rem;
    }

    .btn-group button {
      padding: 1rem 2rem;
      background: #25e5cb;
      color: #1f1c2c;
      font-weight: bold;
      font-size: 1.1rem;
      border-radius: 8px;
      cursor: pointer;
      border: none;
      transition: background 0.2s;
    }

    .btn-group button:hover {
      background: #e0e0e0;
    }

    .year-section {
      display: none;
      padding: 1.5rem;
      border-radius: 12px;
      margin-bottom: 2rem;
    }

    .year-section.active {
      display: block;
    }

    .year-section h3 {
      color: #ff9800;
      margin-bottom: 1.5rem;
      font-size: 1.6rem;
    }

    .subject-item {
      background: rgba(255, 255, 255, 0.1);
      backdrop-filter: blur(6px);
      color: #ffffff;
      padding: 1rem;
      margin: 0.75rem 0;
      border-radius: 12px;
      display: flex;
      justify-content: space-between;
      align-items: center;
      font-size: 1.05rem;
      box-shadow: 0 4px 12px rgba(0, 0, 0, 0.3);
      transition: transform 0.2s ease, background 0.3s ease;
    }

    .subject-item:hover {
      transform: scale(1.02);
      background: rgba(255, 255, 255, 0.15);
    }

    .subject-item a {
      color: #00e5ff;
      text-decoration: none;
      padding: 0.4rem 0.8rem;
      background: rgba(0, 229, 255, 0.15);
      border-radius: 6px;
      transition: background 0.2s;
    }

    .subject-item a:hover {
      background: rgba(0, 229, 255, 0.3);
    }

    .about-section {
      display: none;
    }

    .about-section.active {
      display: block;
    }

    .about-section h2 {
      font-size: 2rem;
      color: #00e5ff;
      margin-bottom: 1rem;
    }

    .about-section p {
      font-size: 1.1rem;
      color: #e0e0e0;
      margin-bottom: 1rem;
    }

    footer {
      text-align: center;
      padding: 1rem;
      font-size: 0.9rem;
      background-color: rgba(255, 255, 255, 0.05);
    }

    .fixed-name {
      position: fixed;
      bottom: 10px;
      left: 15px;
      font-family: 'Pacifico', cursive;
      font-size: 1.3rem;
      color: #00e5ff;
      opacity: 0.9;
      z-index: 9999;
      pointer-events: none;
      user-select: none;
      text-shadow: 1px 1px 4px rgba(0,0,0,0.4);
    }

    @media (max-width: 768px) {
      header h1 {
        font-size: 1.8rem;
      }
      .btn-group {
        flex-direction: column;
      }
      .fixed-name {
        font-size: 1.1rem;
      }
    }