/* --- Elegant Serenity 테마 --- */
.premium-content-wrapper {
    font-family: 'Pretendard', 'Noto Sans KR', 'Apple SD Gothic Neo', sans-serif;
    background: #f8f9fa;
    color: #343a40;
    line-height: 1.9;
    word-break: keep-all;
    padding: 50px;
    border-radius: 8px;
    margin: 20px 0;
    box-shadow: 0 10px 30px rgba(0,0,0,0.08);
    border: 1px solid #e9ecef;
}

.premium-title {
    font-family: 'Georgia', serif;
    font-size: 2.6em;
    font-weight: 500;
    color: #212529;
    text-align: center;
    margin-bottom: 45px;
    letter-spacing: 1px;
}

.premium-content-wrapper h2 {
    font-size: 2.2em;
    font-weight: 600;
    color: #343a40;
    text-align: center;
    padding-bottom: 20px;
    margin: 40px 0 30px 0;
    border-bottom: 1px solid #dee2e6;
    position: relative;
}

.premium-content-wrapper h2::after {
    content: '';
    position: absolute;
    bottom: -1px;
    left: 50%;
    transform: translateX(-50%);
    width: 70px;
    height: 2px;
    background: #343a40;
}

.premium-content-wrapper h3 {
    font-size: 1.7em;
    font-weight: 600;
    color: #495057;
    margin: 40px 0 20px 0;
    padding-bottom: 10px;
}

.premium-content-wrapper p {
    font-size: 1.1em;
    margin-bottom: 1.5em;
    color: #495057;
    text-align: justify;
}

.premium-content-wrapper strong {
    color: #09508d;
    font-weight: 600;
}

.premium-content-wrapper u {
    text-decoration: none;
    box-shadow: inset 0 -10px 0 rgba(52, 152, 219, 0.15);
    transition: box-shadow .2s ease-in-out;
}
.premium-content-wrapper u:hover {
    box-shadow: inset 0 -1.2em 0 rgba(52, 152, 219, 0.15);
}

.info-highlight {
    background: #eef3f7;
    border-radius: 8px;
    padding: 25px;
    margin: 30px 0;
    border: 1px solid #d8e1e8;
}

.info-highlight p {
    color: #34495e;
    margin: 0;
    font-size: 1.05em;
}

.premium-content-wrapper ul li::marker {
    color: #3498db;
}

/* --- 구매 버튼 섹션 --- */
.premium-purchase-section {
    text-align: center;
    margin: 60px 0;
    padding: 40px;
    background: #fff;
    border-radius: 12px;
    border: 1px solid #dee2e6;
    transition: all 0.3s ease-out;
}

.premium-purchase-section:hover {
    box-shadow: 0 15px 40px rgba(0,0,0,0.1);
    transform: translateY(-4px);
}

.purchase-content h3 {
    color: #212529 !important;
    font-size: 1.8em !important;
    font-weight: 600 !important;
    margin-bottom: 15px !important;
    border: none !important;
    padding: 0 !important;
}

.premium-purchase-button {
    display: inline-block !important;
    padding: 16px 45px !important;
    font-size: 1.2em !important;
    font-weight: 600 !important;
    color: #343a40 !important;
    background: transparent !important;
    border: 2px solid #343a40 !important;
    border-radius: 8px !important;
    text-decoration: none !important;
    transition: all 0.2s ease-in-out !important;
    letter-spacing: 0.5px;
    cursor: pointer !important;
}

.premium-purchase-button:hover {
    background: #343a40 !important;
    color: #fff !important;
    transform: translateY(-2px) !important;
    box-shadow: 0 8px 20px rgba(52, 58, 64, 0.2) !important;
    text-decoration: none !important;
}