:root {
        --bg: #ffffff;
        --text-heading: #111111;
        --text-body: #4a4a4a;
        --accent: #2563eb;
        --accent-hover: #1d4ed8;
        --placeholder-bg: #e2e6ea;
        --placeholder-text: #9aa3ac;
        --border-radius: 12px;
        --shadow: 0 4px 24px rgba(0, 0, 0, 0.07);
      }

      .school-subject {
        background: var(--bg);
        font-family: Khmer OS Battambang;
        color: var(--text-body);
        display: flex;
        flex-direction: column;
        align-items: center;
        justify-content: center;
        padding: 30px 20px;
      }

      .page-name {
        width: 100%;
        text-align: center;
        font-family: "Khmer OS Muol Light", sans-serif;
        color: var(--text-heading);
        animation: fadeUp 0.7s ease both;
        margin-top: -35px;
      }

      .hero {
        display: flex;
        align-items: flex-start;
        gap: 56px;
        max-width: 1400px;
        width: 100%;
        animation: fadeUp 0.7s ease both;
      }

      @keyframes fadeUp {
        from {
          opacity: 0;
          transform: translateY(24px);
        }
        to {
          opacity: 1;
          transform: translateY(0);
        }
      }

      .hero__image {
        flex: 0 0 auto;
        width: 550px;
        height: 360px;
        background: var(--placeholder-bg);
        border-radius: var(--border-radius);
        box-shadow: var(--shadow);
        display: flex;
        align-items: center;
        justify-content: center;
        overflow: hidden;
        position: relative;
        box-shadow: 0 5px 10px rgba(0, 0, 0, 0.363);
      }

      .hero__image::before {
        content: "";
        position: absolute;
        inset: 0;
        background: linear-gradient(135deg, #dde1e7 0%, #c8cdd4 100%);
      }
      .hero__image-label img{
        width: 550px;
      }
      .hero__image-label {
        position: relative;
        font-family: "DM Sans", sans-serif;
        font-size: 1.6rem;
        font-weight: 500;
        color: var(--placeholder-text);
        letter-spacing: 0.02em;
      }

      .hero__content {
        flex: 1;
        align-self: flex-start;
        animation: fadeUp 0.7s 0.15s ease both;
      }

      .hero__title {
        font-family: "Khmer OS Muol Light", sans-serif;
        color: var(--text-heading);
        line-height: 1.2;
        margin-bottom: 20px;
        font-size: 1.5rem;
      }

      .hero__body {
        font-size: 1rem;
        line-height: 1.75;
        color: var(--text-body);
        max-width: 1700px;
        margin-bottom: 32px;
      }

      .hero__cta {
        display: inline-block;
        background: var(--accent);
        color: #fff;
        font-family: "DM Sans", sans-serif;
        font-size: 0.95rem;
        font-weight: 500;
        padding: 14px 28px;
        border-radius: 8px;
        border: none;
        cursor: pointer;
        text-decoration: none;
        transition:
          background 0.2s ease,
          transform 0.15s ease,
          box-shadow 0.2s ease;
        box-shadow: 0 4px 14px rgba(37, 99, 235, 0.35);
      }

      .hero__cta:hover {
        background: var(--accent-hover);
        transform: translateY(-2px);
        box-shadow: 0 6px 20px rgba(37, 99, 235, 0.45);
      }

      .hero__cta:active {
        transform: translateY(0);
      }

      @media (max-width: 820px) {
        .hero {
          flex-direction: column;
          gap: 36px;
          text-align: center;
        }

        .hero__image {
          width: 100%;
          max-width: 520px;
          height: 240px;
        }

        .hero__body {
          max-width: 100%;
          margin-left: auto;
          margin-right: auto;
        }
      }