body {
    background-color: #f4f1ea !important;
    margin: 0;
    padding: 0;
    font-family: 'Georgia', serif;
    line-height: 1.8;
    color: #333;
    position: relative;
}

body::before {
    content: "";
    position: fixed;
    top: 0; left: 0;
    width: 100%; height: 100%;
    background-image: url('https://www.transparenttextures.com/patterns/old-paper.png');
    opacity: 0.2;
    pointer-events: none;
    z-index: 1;
}

.fulltext {
    position: relative;
    z-index: 2;
    max-width: 950px;
    margin: 40px auto;
    background: rgba(255, 255, 255, 0.98);
    padding: 55px;
    border-radius: 15px;
    border-top: 10px solid #002366;
    box-shadow: 0 15px 45px rgba(0,0,0,0.1);
}

.fulltext h1 {
    color: #002366;
    text-align: center;
    font-size: 2.8em;
    margin-bottom: 10px;
    border-bottom: 2px solid #d4a76a;
    padding-bottom: 15px;
}

.era-subtitle {
    text-align: center;
    display: block;
    font-style: italic;
    color: #444;
    margin-bottom: 45px;
    font-size: 1.2em;
}

.content-area {
    text-align: justify;
    font-size: 20px;
    color: #2c2c2c;
}

.section-header {
    color: #002366;
    border-bottom: 1px solid #d4a76a;
    margin-top: 40px;
    margin-bottom: 20px;
    font-size: 28px;
    font-weight: bold;
}

.sub-header {
    color: #8b0000;
    font-size: 24px;
    margin-top: 30px;
    margin-bottom: 15px;
    font-weight: bold;
}

.text-paragraph {
    margin-bottom: 20px;
    text-indent: 30px;
}

.fact-box {
    background-color: #f0f4f8;
    border-left: 5px solid #002366;
    padding: 15px 20px;
    margin: 20px 0;
    font-style: italic;
    font-size: 18px;
    color: #444;
}

.lesson-image {
    width: 100%;
    max-width: 700px;
    display: block;
    margin: 0 auto 40px auto;
    border-radius: 10px;
    box-shadow: 0 8px 25px rgba(0,0,0,0.15);
}