* {
            margin: 0;
            padding: 0;
            box-sizing: border-box;
            font-family: Arial, sans-serif;
        }

        body {
            background: #100523 url('background.webp') no-repeat center center fixed;
            background-size: cover;
            height: 100vh;
            width: 100vw;
            display: flex;
            justify-content: center;
            align-items: center;
            overflow: hidden;
        }

        .main-container {
            position: relative;
            width: 100%;
            max-width: 1200px;
            height: 100vh;
            display: flex;
            flex-direction: column;
            align-items: center;
            justify-content: center;
            padding: 10px;
        }

        /* --- CÔ GÁI 2 BÊN --- */
        .girl-left, .girl-right {
            position: absolute;
            bottom: 0;
            height: 68vh;
            z-index: 1;
            pointer-events: none;
            display: flex;
            align-items: flex-end;
        }

        .girl-left { left: 0; }
        .girl-right { right: 0; }

        .girl-left img, .girl-right img {
            height: 100%;
            width: auto;
            max-width: 32vw;
            object-fit: contain;
            display: block;
        }

        /* --- NỘI DUNG CHÍNH --- */
        .content-wrapper {
            position: relative;
            z-index: 10;
            width: 100%;
            max-width: 650px;
            display: flex;
            flex-direction: column;
            align-items: center;
            text-align: center;
        }

        .logo {
            max-width: 230px;
            width: 55%;
            margin-bottom: 6px;
        }

        .img-title-promo {
            max-width: 600px;
            width: 95%;
            height: auto;
            display: block;
            margin-bottom: 6px;
        }

        .img-condition {
            max-width: 520px;
            width: 88%;
            height: auto;
            display: block;
            margin-bottom: 12px;
        }

        .links-grid {
            display: grid;
            grid-template-columns: repeat(2, 1fr);
            gap: 8px 16px;
            width: 100%;
            max-width: 500px;
            margin-bottom: 8px;
        }

        .btn-img-link {
            display: block;
            width: 100%;
            cursor: pointer;
            transition: transform 0.2s ease-in-out, filter 0.2s ease-in-out;
        }

        .btn-img-link img {
            width: 100%;
            height: auto;
            display: block;
        }

        .btn-img-link:hover {
            transform: scale(1.04);
            filter: brightness(1.15);
        }

        .btn-vip {
            max-width: 240px;
            width: 60%;
            margin: 4px auto 6px auto;
        }

        /* --- HIỆU ỨNG ANIMATION CHO BANNER 38K-188K --- */
        .banner-container {
            position: relative;
            max-width: 330px;
            width: 70%;
            margin-top: 4px;
            overflow: hidden; /* Dùng để làm tia sáng lướt qua */
            border-radius: 12px; /* Bo góc giúp vệt sáng ko bị chờm ra ngoài */
        }

        .img-promo-banner {
            width: 100%;
            height: auto;
            display: block;
            /* Gọi Animation co giãn + phát sáng lặp lại vô hạn */
            animation: bannerPulseGlow 2.5s ease-in-out infinite;
            cursor: pointer;
        }

        /* Vệt sáng lướt qua mặt Banner */
        .banner-container::after {
            content: '';
            position: absolute;
            top: -50%;
            left: -150%;
            width: 100%;
            height: 200%;
            background: linear-gradient(
                60deg, 
                rgba(255, 255, 255, 0) 20%, 
                rgba(255, 255, 255, 0.6) 50%, 
                rgba(255, 255, 255, 0) 80%
            );
            transform: rotate(25deg);
            animation: bannerShine 3s infinite ease-in-out;
            pointer-events: none;
        }

        /* Keyframes: Co giãn + Đổi màu ánh hào quang xung quanh */
        @keyframes bannerPulseGlow {
            0% {
                transform: scale(1);
            }
            50% {
                transform: scale(1.06);
            }
            100% {
                transform: scale(1);
            }
        }

        /* Keyframes: Vệt sáng quét từ trái qua phải */
        @keyframes bannerShine {
            0% {
                left: -150%;
            }
            30%, 100% {
                left: 150%;
            }
        }

        /* --- CẤU TRÚC POPUP OVERLAY CHUNG --- */
        .popup-overlay {
            display: none;
            position: fixed;
            top: 0;
            left: 0;
            width: 100vw;
            height: 100vh;
            background: rgba(0, 0, 0, 0.75);
            backdrop-filter: blur(4px);
            z-index: 999;
            justify-content: center;
            align-items: center;
        }

        .popup-overlay.active {
            display: flex;
        }

        /* --- POPUP 1: FORM NHẬP LỆNH --- */
        .popup-box-form {
            position: relative;
            width: 90%;
            max-width: 480px;
            background: url('popup-frame.webp') no-repeat center center;
            background-size: 100% 100%;
            padding: 40px 30px 30px 30px;
            display: flex;
            flex-direction: column;
            align-items: center;
            box-sizing: border-box;
        }

        .popup-form {
            width: 100%;
            display: flex;
            flex-direction: column;
            align-items: center;
            gap: 12px;
            margin-top: 10px;
        }

        .popup-input {
            width: 100%;
            max-width: 340px;
            height: 42px;
            border-radius: 25px;
            border: 2px solid #a876f5;
            padding: 0 18px;
            font-size: 15px;
            font-style: italic;
            outline: none;
            color: #333;
            background: #ffffff;
            box-shadow: inset 0 2px 4px rgba(0,0,0,0.2);
        }

        .popup-input::placeholder {
            color: #888;
            font-style: italic;
        }

        .checkbox-container {
            display: flex;
            align-items: center;
            justify-content: center;
            gap: 8px;
            color: #ffffff;
            font-size: 14px;
            font-style: italic;
            cursor: pointer;
            user-select: none;
            margin: 4px 0;
        }

        .checkbox-container input {
            width: 18px;
            height: 18px;
            cursor: pointer;
            accent-color: #9d3bf0;
        }

        .btn-popup-submit {
            background: none;
            border: none;
            cursor: pointer;
            width: 100%;
            max-width: 220px;
            margin-top: 4px;
            transition: transform 0.2s;
        }

        .btn-popup-submit img {
            width: 100%;
            height: auto;
            display: block;
        }

        .btn-popup-submit:hover {
            transform: scale(1.05);
        }

        .btn-popup-close {
            position: absolute;
            top: 12px;
            right: 15px;
            width: 38px;
            height: 38px;
            cursor: pointer;
            z-index: 1005;
            transition: transform 0.2s ease, filter 0.2s ease;
        }

        .btn-popup-close:hover {
            transform: scale(1.15) rotate(90deg);
            filter: brightness(1.2);
        }

        /* --- POPUP 2: THÔNG BÁO --- */
        .popup-box-notice {
            position: relative;
            width: 90%;
            max-width: 620px;
            display: flex;
            justify-content: center;
            align-items: center;
        }

        .notice-img-full {
            width: 100%;
            height: auto;
            display: block;
        }

        .notice-content {
            position: absolute;
            top: 0;
            left: 52%; 
            right: 12%; 
            bottom: 0;
            display: flex;
            align-items: center;
            justify-content: center;
            text-align: left;
        }

        .notice-text {
            color: #ffffff;
            font-size: 19px;
            font-weight: bold;
            line-height: 1.4;
            text-shadow: 0 2px 4px rgba(0, 0, 0, 0.6);
        }

        .notice-text span {
            color: #ffeb3b; 
        }

        .btn-close-notice {
            position: absolute;
            top: 9.5%;
            right: 0.5%;
            width: 6.5%;
            height: auto;
            aspect-ratio: 1 / 1;
            cursor: pointer;
            z-index: 1005;
            transition: transform 0.2s ease, filter 0.2s ease;
        }

        .btn-close-notice:hover {
            transform: scale(1.15) rotate(90deg);
            filter: brightness(1.2);
        }

        /* --- RESPONSIVE MOBILE --- */
        @media (max-width: 768px) {
            body { overflow-y: auto; }
            .main-container { justify-content: flex-start; padding-top: 10px; }
            .girl-left, .girl-right { position: fixed; bottom: 0; height: 38vh; z-index: 1; opacity: 0.9; }
            .girl-left img, .girl-right img { max-width: 45vw; }
            .logo { max-width: 180px; width: 50%; margin-top: 5px; margin-bottom: 8px; }
            .img-title-promo { max-width: 95%; margin-bottom: 6px; }
            .img-condition { max-width: 90%; margin-bottom: 12px; }
            .links-grid { gap: 8px 10px; max-width: 92%; margin-bottom: 10px; }
            .btn-vip { max-width: 220px; margin-bottom: 8px; }
            
            .banner-container { max-width: 75%; margin-bottom: 15px; }

            .popup-box-form {
                width: 92%;
                padding: 30px 20px 20px 20px;
            }
            .popup-input {
                height: 38px;
                font-size: 13px;
            }
            .btn-popup-close {
                width: 32px;
                height: 32px;
                top: 8px;
                right: 10px;
            }

            .popup-box-notice {
                width: 95%;
            }
            .notice-content {
                left: 52%;
                right: 10%;
            }
            .notice-text {
                font-size: 13px;
                line-height: 1.35;
            }
            .btn-close-notice {
                top: 9.5%;
                right: 0.5%;
                width: 7%;
            }
        }