/* --- 테마 16: Industrial Grit --- */
.premium-content-wrapper {
    font-family: 'Roboto Condensed', 'Pretendard', sans-serif;
    background-color: #e0e0e0;
    background-image: url('data:image/svg+xml,%3Csvg xmlns="http://www.w3.org/2000/svg" width="100" height="100" viewBox="0 0 100 100"%3E%3Cg fill-rule="evenodd"%3E%3Cg fill="%23c7c7c7" fill-opacity="0.4"%3E%3Cpath opacity=".5" d="M96 95h4v1h-4v-1zm-7 0h1v1h-1v-1zm-7 0h1v1h-1v-1zm-7 0h1v1h-1v-1zm-7 0h1v1h-1v-1zm-7 0h1v1h-1v-1zm-7 0h1v1h-1v-1zm-7 0h1v1h-1v-1zm-7 0h1v1h-1v-1zm-7 0h1v1h-1v-1zm-7 0h1v1h-1v-1zm-7 0h1v1h-1v-1zM0 95h1v1H0v-1zm7 0h1v1H7v-1zm7 0h1v1h-7v-1zm7 0h1v1h-7v-1zm7 0h1v1h-7v-1zm7 0h1v1h-7v-1zm7 0h1v1h-7v-1zm7 0h1v1h-7v-1zm7 0h1v1h-7v-1zm7 0h1v1h-7v-1zm7 0h1v1h-7v-1zm7 0h1v1h-7v-1z"/%3E%3Cpath d="M4 0h1v1H4V0zm7 0h1v1h-1V0zm7 0h1v1h-1V0zm7 0h1v1h-1V0zm7 0h1v1h-1V0zm7 0h1v1h-1V0zm7 0h1v1h-1V0zm7 0h1v1h-1V0zm7 0h1v1h-1V0zm7 0h1v1h-1V0zm7 0h1v1h-1V0zm7 0h1v1h-1V0zM96 0h4v1h-4V0zm-7 0h1v1h-1V0zm-7 0h1v1h-1V0zm-7 0h1v1h-1V0zm-7 0h1v1h-1V0zm-7 0h1v1h-1V0zm-7 0h1v1h-1V0zm-7 0h1v1h-1V0zm-7 0h1v1h-1V0zm-7 0h1v1h-1V0zm-7 0h1v1h-1V0zm-7 0h1v1h-1V0z"/%3E%3C/g%3E%3C/g%3E%3C/svg%3E');
    color: #222;
    line-height: 1.8;
    word-break: keep-all;
    padding: 40px;
    border-radius: 4px;
    margin: 20px 0;
    box-shadow: 0 10px 30px rgba(0,0,0,0.2);
    border: 3px solid #444;
}

.premium-title {
    font-size: 3.2em;
    font-weight: 700;
    color: #000;
    text-align: center;
    margin-bottom: 40px;
    letter-spacing: 2px;
    text-transform: uppercase;
    text-shadow: 2px 2px 0 #fff;
}

.premium-content-wrapper h2 {
    font-size: 2em;
    font-weight: 700;
    color: #d9534f; /* Rusted color */
    text-align: center;
    padding: 15px 0;
    margin: 40px 0 30px 0;
    background: #ccc;
    text-transform: uppercase;
    box-shadow: inset 0 0 10px rgba(0,0,0,0.2);
}

.premium-content-wrapper h3 {
    font-size: 1.8em;
    font-weight: 700;
    color: #333;
    padding-bottom: 10px;
    border-bottom: 3px solid #555;
    text-transform: uppercase;
}

.premium-content-wrapper strong {
    color: #d9534f;
    font-weight: 700;
}

.info-highlight {
    background: #ccc;
    border: 2px solid #aaa;
    border-radius: 0;
    padding: 25px;
    margin: 30px 0;
}

/* --- 버튼 섹션: Industrial Grit --- */
.premium-purchase-section {
    text-align: center;
    margin: 50px auto;
    padding: 40px;
    background: #d4d4d4;
    border-radius: 4px;
    box-shadow: 0 10px 30px rgba(0,0,0,0.2);
    border: 3px solid #444;
}

.purchase-content h3 {
    color: #000 !important;
    font-size: 2.2em !important;
    font-weight: 700 !important;
    text-transform: uppercase;
    margin-bottom: 15px !important;
    border: none !important;
    padding: 0 !important;
    text-shadow: 1px 1px 0 #fff !important;
}

.purchase-content p {
    color: #444;
    text-align: center;
    margin-bottom: 30px;
}

.premium-purchase-button {
    display: inline-block !important;
    padding: 20px 55px !important;
    font-size: 1.4em !important;
    font-weight: 700 !important;
    letter-spacing: 1px;
    text-transform: uppercase;
    color: #fff !important;
    background: linear-gradient(145deg, #555, #333) !important;
    border: 2px solid #222 !important;
    border-radius: 2px !important;
    text-decoration: none !important;
    transition: all 0.2s ease !important;
    box-shadow: 0 8px 0 #222, 0 10px 20px rgba(0,0,0,0.3) !important;
    cursor: pointer !important;
}

.premium-purchase-button:hover {
    background: linear-gradient(145deg, #666, #444) !important;
    transform: translateY(-2px) !important;
    box-shadow: 0 10px 0 #222, 0 12px 25px rgba(0,0,0,0.3) !important;
    text-decoration: none !important;
}
.premium-purchase-button:active {
    transform: translateY(4px) !important;
    box-shadow: 0 4px 0 #222, 0 6px 15px rgba(0,0,0,0.4) !important;
}