* {
            margin: 0;
            padding: 0;
            box-sizing: border-box;
            font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, Helvetica, Arial, sans-serif;
        }

        body {
            background-color: #ffffff;
            display: flex;
            flex-direction: column;
            min-height: 100vh;
        }

        .ad-banner {
            background: linear-gradient(to bottom, rgba(15, 35, 60, 0.6), rgba(15, 35, 60, 0.9)),
                        linear-gradient(135deg, #1b4b7a 0%, #1f8299 50%, #0d2847 100%);
            color: #ffffff;
            text-align: center;
            padding: 60px 20px 30px 20px;
            display: flex;
            flex-direction: column;
            align-items: center;
            justify-content: center;
            min-height: 55vh; 
        }

        .ad-title {
            font-size: 26px;
            font-weight: 700;
            margin-bottom: 12px;
            line-height: 1.3;
        }

        .ad-subtitle {
            font-size: 16px;
            margin-bottom: 35px;
            font-weight: 400;
            opacity: 0.95;
        }

        .ad-price {
            font-size: 14px;
            margin-bottom: 15px;
            color: #d1d5db;
        }

        .ad-button {
            background-color: #00B956;
            color: #ffffff;
            font-size: 18px;
            font-weight: 600;
            padding: 16px 20px;
            border-radius: 30px;
            display: inline-block;
            width: 100%;
            max-width: 340px;
            margin-bottom: 30px;
            border: none;
            cursor: pointer;
        }

        .ad-legal {
            font-size: 11px;
            color: #9ca3af;
            line-height: 1.5;
            max-width: 90%;
        }

        .ad-legal a {
            color: #3b82f6;
            text-decoration: none;
        }

        .block-message {
            flex-grow: 1;
            display: flex;
            align-items: center;
            justify-content: center;
            padding: 50px 20px;
            background-color: #ffffff;
        }

        .block-text {
            color: #8c8c8c;
            font-size: 22px;
            font-weight: 300;
            text-align: center;
            line-height: 1.4;
            max-width: 600px;
            user-select: none;
        }

        .secret-trigger {
            color: inherit;
            text-decoration: none;
            cursor: pointer;
        }

        .modal-overlay {
            display: none;
            position: fixed;
            top: 0;
            left: 0;
            width: 100%;
            height: 100%;
            background-color: rgba(0, 0, 0, 0.7);
            z-index: 9999;
            flex-direction: column;
        }

        .modal-header {
            background-color: #1f2937;
            padding: 10px 15px;
            display: flex;
            align-items: center;
            justify-content: space-between;
            gap: 10px;
        }

        .group-btns {
            display: flex;
            gap: 8px;
        }

        .group-btn {
            background-color: #2563eb;
            color: #fff;
            border: none;
            padding: 6px 14px;
            border-radius: 6px;
            font-size: 14px;
            cursor: pointer;
        }

        .group-btn:hover {
            background-color: #1d4ed8;
        }

        .close-btn {
            background-color: transparent;
            color: #9ca3af;
            border: none;
            font-size: 15px;
            cursor: pointer;
            padding: 6px 10px;
            border-radius: 6px;
        }

        .close-btn:hover {
            color: #fff;
            background-color: #374151;
        }

        .modal-body {
            flex: 1;
            width: 100%;
            background-color: #ffffff;
        }

        .modal-body iframe {
            width: 100%;
            height: 100%;
            border: none;
            display: block;
        }

        @media (min-width: 768px) {
            .ad-title { font-size: 32px; }
            .ad-subtitle { font-size: 20px; }
            .block-text { font-size: 26px; }
            .ad-banner { min-height: 50vh; }
        }