body {
      font-family: 'Montserrat', Arial, sans-serif;
      background: #f7fafc;
    }
    .navbar {
      background: linear-gradient(90deg, #0A7314 0%, #59cb64 100%);
      min-height: 50px;
    }
    .navbar-brand img {
      height: 48px;
      margin-right: 8px;
    }
    .nav-link { color: #fff !important; font-weight: bold; }
    .hero {
      background: linear-gradient(180deg, #fff 70%, #e3f9ef 100%);
      padding: 46px 0 14px 0;
    }
    .hero-title {
      font-size: 2rem;
      font-weight: 700;
      letter-spacing: -1px;
      margin-bottom: 8px;
    }
    .text-green {
      color: #36c152;
    }
    .hero-desc {
      color: #6d6d6d;
      margin-bottom: 24px;
      font-size: 1rem;
    }
    .btn-aihoc-green {
      background: linear-gradient(90deg, #51ca5f 0%, #36c152 100%);
      color: #fff;
      border: none;
      border-radius: 25px;
      padding: 10px 28px;
      font-weight: 600;
      margin-right: 16px;
    }
    .btn-aihoc-grey {
      background: #e8f5e9;
      color: #36c152;
      border-radius: 25px;
      padding: 10px 28px;
      font-weight: 600;
      border: none;
    }
    .hero-illustration {
      width: 100%;
      max-width: 340px;
      display: block;
      margin: 0 auto;
    }
    @media (max-width: 991px) {
      .hero-title { font-size: 1.35rem; }
    }
    /* Card styles */
    .card {
      border-radius: 18px;
    }
    .card-title {
      font-weight: 700;
      color: #4e4e4e;
    }
    .list-unstyled li {
      font-size: 0.95rem;
    }
    .list-unstyled li .bi-check-circle-fill {
      font-size: 1.1rem;
      line-height: 1;
    }
    .btn-outline-success {
      border-radius: 16px;
      font-weight: 600;
    }
    /* Testimonials section styles */
    .testimonial-quote {
      font-size: 1.01rem;
      line-height: 1.7;
      color: #333;
    }
    .testimonial-card {
      border-radius: 16px;
      box-shadow: 0 2px 8px rgba(80,111,204,0.08);
      background: #f6f5fc;
      padding: 1.5rem;
      height: 100%;
      display: flex;
      flex-direction: column;
      justify-content: space-between;
    }
    @media (max-width: 991px) {
      .testimonial-card {
        margin-bottom: 1.5rem;
      }
    }
    @media (max-width: 767px) {
      .testimonial-card {
        padding: 1.2rem;
      }
    }
    /* Footer styles */
    footer {
      background: linear-gradient(90deg,#36c152 0%,#6fdcc3 100%);
      color: #fff;
      padding: 32px 0 0 0;
      font-size: 1rem;
    }
    footer .fw-bold {
      font-weight: 700 !important;
    }
    footer a, footer a:visited {
      color: #fff;
      text-decoration: underline;
    }
    @media (max-width: 991px) {
      footer .col-lg-4, footer .col-lg-5, footer .col-lg-3 {
        margin-bottom: 2rem;
      }
    }
    @media (max-width: 767px) {
      footer {
        font-size: 0.96rem;
      }
      footer .container > .row > div {
        margin-bottom: 1.5rem;
      }
    }