{"id":614,"date":"2024-08-10T07:32:11","date_gmt":"2024-08-10T07:32:11","guid":{"rendered":"https:\/\/startersites.io\/elementor\/consultant\/?page_id=614"},"modified":"2026-09-04T15:17:46","modified_gmt":"2026-09-04T08:17:46","slug":"home","status":"publish","type":"page","link":"https:\/\/hatdau.com\/","title":{"rendered":"Trang Ch\u1ee7"},"content":{"rendered":"\t\t<div data-elementor-type=\"wp-page\" data-elementor-id=\"614\" class=\"elementor elementor-614\">\n\t\t\t\t<div class=\"elementor-element elementor-element-4b6b4f1 e-con e-atomic-element e-flexbox-base ipad e-4b6b4f1-34532d0 \" data-id=\"4b6b4f1\" data-element_type=\"e-flexbox\" data-e-type=\"e-flexbox\" data-interaction-id=\"4b6b4f1\">\n    <div class=\"elementor-element elementor-element-7f0998d e-con e-atomic-element e-flexbox-base e-7f0998d-3792e3e \" data-id=\"7f0998d\" data-element_type=\"e-flexbox\" data-e-type=\"e-flexbox\" data-interaction-id=\"7f0998d\">\n    \t\t<div class=\"elementor-element elementor-element-ad29e25 elementor-widget elementor-widget-shortcode\" data-id=\"ad29e25\" data-element_type=\"widget\" data-e-type=\"widget\" data-widget_type=\"shortcode.default\">\n\t\t\t\t\t\t\t<div class=\"elementor-shortcode\">    <style>\n        @import url('https:\/\/fonts.googleapis.com\/css2?family=Bitter:wght@700;800&display=swap');\n\n        \/* === M\u00c1Y T\u00cdNH (DESKTOP) - GI\u1eee NGUY\u00caN N\u00daT N\u1eb0M D\u1eccC C\u1ed8T B\u00caN TR\u00c1I === *\/\n        .sidebar-buttons-container {\n            display: flex;\n            flex-direction: column;\n            gap: 16px;\n            width: 100%;\n            box-sizing: border-box;\n        }\n\n        .btn-khoi-cute {\n            border: none !important;\n            font-family: 'Bitter', serif !important;\n            font-weight: 800;\n            padding: 18px 20px;\n            border-radius: 18px;\n            cursor: pointer;\n            transition: all 0.2s ease;\n            text-align: center;\n            font-size: 22px !important;\n            white-space: nowrap;\n            width: 100%;\n            background-color: #ffffff !important;\n            box-shadow: 0 4px 12px rgba(0,0,0,0.06);\n            box-sizing: border-box;\n        }\n\n        .btn-khoi-10 { color: #a1d489 !important; }\n        .btn-khoi-11 { color: #87cd67 !important; }\n        .btn-khoi-12 { color: #65c837 !important; }\n\n        .btn-khoi-cute:hover, .btn-khoi-cute.active {\n            transform: translateY(-2px);\n            box-shadow: 0 6px 16px rgba(0, 0, 0, 0.12);\n        }\n\n        \/* === CH\u1ec8 D\u00c0N H\u00c0NG NGANG TR\u00caN IPAD & \u0110I\u1ec6N THO\u1ea0I (MAX-WIDTH: 1024PX) === *\/\n        @media (max-width: 1024px) {\n            .elementor-widget-shortcode,\n            .elementor-widget-container {\n                width: 100% !important;\n                padding-left: 0 !important;\n                padding-right: 0 !important;\n            }\n            .sidebar-buttons-container {\n                flex-direction: row !important;\n                justify-content: space-between !important;\n                gap: 10px !important;\n                width: 100% !important;\n                margin-bottom: 16px !important;\n            }\n            .btn-khoi-cute {\n                flex: 1 1 0% !important;\n                width: 100% !important;\n                padding: 12px 6px !important;\n                font-size: 16px !important;\n                border-radius: 14px !important;\n            }\n        }\n\n        @media (max-width: 640px) {\n            .sidebar-buttons-container {\n                gap: 8px !important;\n            }\n            .btn-khoi-cute {\n                padding: 10px 4px !important;\n                font-size: 14px !important;\n                border-radius: 12px !important;\n            }\n        }\n    <\/style>\n\n    <div class=\"sidebar-buttons-container\">\n        <button onclick=\"filterGradeMain(10)\" id=\"btn-grade-10\" class=\"btn-khoi-cute btn-khoi-10\">Kh\u1ed1i 10<\/button>\n        <button onclick=\"filterGradeMain(11)\" id=\"btn-grade-11\" class=\"btn-khoi-cute btn-khoi-11\">Kh\u1ed1i 11<\/button>\n        <button onclick=\"filterGradeMain(12)\" id=\"btn-grade-12\" class=\"btn-khoi-cute btn-khoi-12\">Kh\u1ed1i 12<\/button>\n    <\/div>\n    <\/div>\n\t\t\t\t\t\t<\/div>\n\t\t\n<\/div>\n<div class=\"elementor-element elementor-element-2214186 e-con e-atomic-element e-flexbox-base e-2214186-ea3e568 \" data-id=\"2214186\" data-element_type=\"e-flexbox\" data-e-type=\"e-flexbox\" data-interaction-id=\"2214186\">\n    \t\t<div class=\"elementor-element elementor-element-8362c65 elementor-widget elementor-widget-shortcode\" data-id=\"8362c65\" data-element_type=\"widget\" data-e-type=\"widget\" data-widget_type=\"shortcode.default\">\n\t\t\t\t\t\t\t<div class=\"elementor-shortcode\">    <style>\n        @import url('https:\/\/fonts.googleapis.com\/css2?family=Bitter:wght@700;800&family=Nunito:wght@700;800;900&display=swap');\n\n        \/* === M\u00c1Y T\u00cdNH (DESKTOP) - CHU\u1ea8N L\u01af\u1edaI 3 C\u1ed8T B\u00c0I H\u1eccC G\u1ed0C === *\/\n        .grid-cards-col {\n            display: grid;\n            grid-template-columns: repeat(3, minmax(0, 1fr));\n            gap: 18px;\n            width: 100%;\n            box-sizing: border-box;\n        }\n\n        .card-item-cute {\n            width: 100%;\n            height: 240px;\n            box-sizing: border-box;\n            background: #ffffff;\n            border-radius: 20px;\n            display: flex;\n            flex-direction: column;\n            justify-content: space-between;\n            align-items: center;\n            overflow: hidden;\n            cursor: pointer;\n            transition: transform 0.2s ease, box-shadow 0.2s ease;\n            box-shadow: 0 4px 12px rgba(0,0,0,0.04);\n            position: relative;\n        }\n\n        .card-item-cute:hover {\n            transform: translateY(-4px);\n            box-shadow: 0 10px 20px rgba(17, 59, 2, 0.12);\n        }\n\n        .card-header-box {\n            width: calc(100% - 16px);\n            margin: 8px 8px 0 8px;\n            padding: 10px 6px;\n            border-radius: 14px;\n            text-align: center;\n            font-family: 'Bitter', serif !important;\n            font-weight: 800;\n            font-size: 18px;\n            color: #113b02 !important;\n            box-sizing: border-box;\n        }\n\n        .header-grade-10 { background-color: #a1d489; }\n        .header-grade-11 { background-color: #87cd67; }\n        .header-grade-12 { background-color: #65c837; }\n\n        .card-body-cute {\n            padding: 6px 10px;\n            text-align: center;\n            flex: 1;\n            display: flex;\n            align-items: center;\n            justify-content: center;\n            width: 100%;\n            box-sizing: border-box;\n        }\n\n        .card-title-cute {\n            font-weight: 900;\n            color: #113b02;\n            font-size: 18px;\n            margin: 0;\n            line-height: 1.3;\n            font-family: 'Nunito', sans-serif;\n            text-transform: uppercase;\n            text-align: center;\n            display: -webkit-box;\n            -webkit-line-clamp: 2;\n            -webkit-box-orient: vertical;\n            overflow: hidden;\n            word-break: break-word;\n        }\n\n        .card-foot-cute {\n            padding-bottom: 12px;\n            text-align: center;\n            width: 100%;\n        }\n\n        .chude-link-btn {\n            font-weight: 800;\n            color: #113b02;\n            font-size: 13px;\n            font-family: 'Nunito', sans-serif;\n            text-decoration: none;\n            padding: 3px 10px;\n            border-radius: 6px;\n            transition: background 0.2s ease;\n        }\n\n        .chude-link-btn:hover {\n            background: #e8f5e9;\n            text-decoration: underline;\n        }\n\n        \/* === IPAD (TABLET) === *\/\n        @media (max-width: 1024px) {\n            .grid-cards-col { \n                grid-template-columns: repeat(3, minmax(0, 1fr)) !important; \n                gap: 12px !important;\n                width: 100% !important;\n            }\n            .card-item-cute {\n                height: 185px !important;\n                border-radius: 16px !important;\n            }\n            .card-header-box {\n                padding: 8px 4px !important;\n                font-size: 15px !important;\n            }\n            .card-title-cute {\n                font-size: 14px !important;\n            }\n        }\n\n        \/* === \u0110I\u1ec6N THO\u1ea0I (MOBILE) === *\/\n        @media (max-width: 640px) {\n            .grid-cards-col { \n                grid-template-columns: repeat(2, minmax(0, 1fr)) !important; \n                gap: 10px !important;\n                width: 100% !important;\n            }\n            .card-item-cute {\n                height: 170px !important;\n                border-radius: 14px !important;\n            }\n            .card-header-box {\n                padding: 6px 4px !important;\n                font-size: 14px !important;\n                margin: 6px 6px 0 6px !important;\n                width: calc(100% - 12px) !important;\n            }\n            .card-title-cute {\n                font-size: 13px !important;\n            }\n            .chude-link-btn {\n                font-size: 11px !important;\n                padding: 2px 6px !important;\n            }\n        }\n    <\/style>\n\n    <div class=\"grid-cards-col\" id=\"lessons-grid-box\">\n                                    <div class=\"card-item-cute lesson-card-item grade-item-11\" data-grade=\"11\" onclick=\"window.location.href='https:\/\/hatdau.com\/?bai-hoc=bai-1'\">\n                    \n                    <div class=\"card-header-box header-grade-11\">\n                        L\u1edbp 11                    <\/div>\n\n                    <div class=\"card-body-cute\">\n                        <p class=\"card-title-cute\">B\u00e0i 1<\/p>\n                    <\/div>\n\n                    <div class=\"card-foot-cute\">\n                        <a href=\"https:\/\/hatdau.com\/?page_id=616&#038;chude_id=20\" class=\"chude-link-btn\" onclick=\"event.stopPropagation();\">\n                            Ch\u1ee7 \u0111\u1ec1 .....                        <\/a>\n                    <\/div>\n                <\/div>\n                            <div class=\"card-item-cute lesson-card-item grade-item-12\" data-grade=\"12\" onclick=\"window.location.href='https:\/\/hatdau.com\/?bai-hoc=bai-3-hahaha'\">\n                    \n                    <div class=\"card-header-box header-grade-12\">\n                        L\u1edbp 12                    <\/div>\n\n                    <div class=\"card-body-cute\">\n                        <p class=\"card-title-cute\">B\u00e0i 3: Hahaha<\/p>\n                    <\/div>\n\n                    <div class=\"card-foot-cute\">\n                        <a href=\"https:\/\/hatdau.com\/?page_id=616&#038;chude_id=19\" class=\"chude-link-btn\" onclick=\"event.stopPropagation();\">\n                            Ch\u1ee7 \u0110\u1ec1 3: Lyric                        <\/a>\n                    <\/div>\n                <\/div>\n                            <div class=\"card-item-cute lesson-card-item grade-item-11\" data-grade=\"11\" onclick=\"window.location.href='https:\/\/hatdau.com\/?bai-hoc=bai-1-bai-hoc-ne'\">\n                    \n                    <div class=\"card-header-box header-grade-11\">\n                        L\u1edbp 11                    <\/div>\n\n                    <div class=\"card-body-cute\">\n                        <p class=\"card-title-cute\">B\u00e0i 1: B\u00e0i h\u1ecdc n\u00e8<\/p>\n                    <\/div>\n\n                    <div class=\"card-foot-cute\">\n                        <a href=\"https:\/\/hatdau.com\/?page_id=616&#038;chude_id=18\" class=\"chude-link-btn\" onclick=\"event.stopPropagation();\">\n                            Ch\u1ee7 \u0111\u1ec1 2                        <\/a>\n                    <\/div>\n                <\/div>\n                            <div class=\"card-item-cute lesson-card-item grade-item-10\" data-grade=\"10\" onclick=\"window.location.href='https:\/\/hatdau.com\/?bai-hoc=bai-1-bai-hoc-thu-nghiem'\">\n                    \n                    <div class=\"card-header-box header-grade-10\">\n                        L\u1edbp 10                    <\/div>\n\n                    <div class=\"card-body-cute\">\n                        <p class=\"card-title-cute\">B\u00e0i 1: B\u00e0i h\u1ecdc th\u1eed nghi\u1ec7m<\/p>\n                    <\/div>\n\n                    <div class=\"card-foot-cute\">\n                        <a href=\"https:\/\/hatdau.com\/?page_id=616&#038;chude_id=17\" class=\"chude-link-btn\" onclick=\"event.stopPropagation();\">\n                            Ch\u1ee7 \u0111\u1ec1 1                        <\/a>\n                    <\/div>\n                <\/div>\n                        <\/div>\n\n    <script>\n        let currentSelectedGradeMain = 'all';\n\n        function filterGradeMain(grade) {\n            if (currentSelectedGradeMain === grade) {\n                currentSelectedGradeMain = 'all';\n                document.querySelectorAll('.btn-khoi-cute').forEach(btn => btn.classList.remove('active'));\n            } else {\n                currentSelectedGradeMain = grade;\n                document.querySelectorAll('.btn-khoi-cute').forEach(btn => btn.classList.remove('active'));\n                const activeBtn = document.getElementById(`btn-grade-${grade}`);\n                if (activeBtn) activeBtn.classList.add('active');\n            }\n\n            const allCards = document.querySelectorAll('.lesson-card-item');\n            let visibleCount = 0;\n\n            allCards.forEach(card => {\n                const cardGrade = card.getAttribute('data-grade');\n                if (currentSelectedGradeMain === 'all' || cardGrade == currentSelectedGradeMain) {\n                    if (visibleCount < 12) {\n                        card.style.display = 'flex';\n                        visibleCount++;\n                    } else {\n                        card.style.display = 'none';\n                    }\n                } else {\n                    card.style.display = 'none';\n                }\n            });\n        }\n\n        document.addEventListener(\"DOMContentLoaded\", function() {\n            filterGradeMain('all');\n        });\n    <\/script>\n    <\/div>\n\t\t\t\t\t\t<\/div>\n\t\t\n<\/div>\n<div class=\"elementor-element elementor-element-b97369d e-con e-atomic-element e-flexbox-base e-b97369d-b2374f1 \" data-id=\"b97369d\" data-element_type=\"e-flexbox\" data-e-type=\"e-flexbox\" data-interaction-id=\"b97369d\">\n    \t\t<div class=\"elementor-element elementor-element-49e8b5e elementor-widget elementor-widget-shortcode\" data-id=\"49e8b5e\" data-element_type=\"widget\" data-e-type=\"widget\" data-widget_type=\"shortcode.default\">\n\t\t\t\t\t\t\t<div class=\"elementor-shortcode\">    <link rel=\"preconnect\" href=\"https:\/\/fonts.googleapis.com\">\n    <link rel=\"preconnect\" href=\"https:\/\/fonts.gstatic.com\" crossorigin>\n    <link href=\"https:\/\/fonts.googleapis.com\/css2?family=Agbalumo&display=swap\" rel=\"stylesheet\">\n\n    <style>\n        .font-agbalumo {\n            font-family: 'Agbalumo', cursive, system-ui !important;\n        }\n        .hstb-item-card {\n            transition: all 0.2s ease-in-out;\n            text-decoration: none !important;\n            display: flex;\n            align-items: center;\n            justify-content: space-between;\n            padding: 16px 20px; \/* Padding h\u00e0ng to r\u1ed9ng r\u00e3i *\/\n            border-radius: 20px;\n            background: #f0fdf4;\n            border: 2px solid #a5d6a7;\n            cursor: pointer;\n            width: 100%;\n            box-sizing: border-box;\n        }\n        .hstb-item-card:hover {\n            background: #e8f5e9;\n            transform: translateX(4px);\n            border-color: #064000;\n            box-shadow: 0 6px 16px rgba(6, 64, 0, 0.18);\n        }\n        .hstb-wrapper-box {\n            width: 100% !important;\n            max-width: 100% !important;\n            height: 100% !important;\n            min-height: 480px; \/* \u0110\u1ea9y chi\u1ec1u cao t\u1ed1i thi\u1ec3u l\u00ean c\u1ef1c to *\/\n            background: #ffffff;\n            border-radius: 32px; \/* Bo g\u00f3c to theo t\u1ec9 l\u1ec7 *\/\n            border: 4px solid #064000; \/* Vi\u1ec1n d\u00e0y d\u1eb7n h\u01a1n *\/\n            overflow: hidden;\n            box-shadow: 0 12px 28px -4px rgba(6, 64, 0, 0.3);\n            box-sizing: border-box !important;\n            display: flex;\n            flex-direction: column;\n            margin: 0 auto;\n        }\n    <\/style>\n\n    <div class=\"hstb-wrapper-box\">\n        <!-- HEADER C\u1ee0 CH\u1eee SI\u00caU TO 32PX -->\n        <div class=\"font-agbalumo\" style=\"background: #064000; color: #ffffff; font-weight: 400; padding: 26px 16px; text-align: center; font-size: 32px; white-space: nowrap; box-sizing: border-box; width: 100%;\">\n            H\u1ecdc Sinh Ti\u00eau Bi\u1ec3u\n        <\/div>\n        \n        <div style=\"padding: 32px 24px; display: flex; flex-direction: column; gap: 16px; flex: 1; justify-content: center; box-sizing: border-box; width: 100%;\">\n                                                <a href=\"https:\/\/hatdau.com\/?page_id=616\" class=\"hstb-item-card\">\n                        <div style=\"display: flex; align-items: center; gap: 16px;\">\n                            <div class=\"font-agbalumo\" style=\"width: 40px; height: 40px; border-radius: 50%; background: #064000; color: #ffffff; display: flex; align-items: center; justify-content: center; font-size: 16px; flex-shrink: 0;\">\n                                1                            <\/div>\n                            <div style=\"font-size: 17px; font-weight: 800; color: #0f172a;\">\n                                Ki\u00ean                                <span style=\"display: block; font-size: 14px; font-weight: 600; color: #475569; margin-top: 3px;\">\n                                    Ch\u1ee7 \u0111\u1ec1 2: Xin ch\u00e0o                                <\/span>\n                            <\/div>\n                        <\/div>\n                        <span class=\"font-agbalumo\" style=\"font-size: 18px; color: #064000;\">\n                            10.4 \u0111i\u1ec3m                        <\/span>\n                    <\/a>\n                                    <a href=\"https:\/\/hatdau.com\/?page_id=616\" class=\"hstb-item-card\">\n                        <div style=\"display: flex; align-items: center; gap: 16px;\">\n                            <div class=\"font-agbalumo\" style=\"width: 40px; height: 40px; border-radius: 50%; background: #064000; color: #ffffff; display: flex; align-items: center; justify-content: center; font-size: 16px; flex-shrink: 0;\">\n                                2                            <\/div>\n                            <div style=\"font-size: 17px; font-weight: 800; color: #0f172a;\">\n                                hi                                <span style=\"display: block; font-size: 14px; font-weight: 600; color: #475569; margin-top: 3px;\">\n                                    Ch\u1ee7 \u0111\u1ec1 2: Xin ch\u00e0o                                <\/span>\n                            <\/div>\n                        <\/div>\n                        <span class=\"font-agbalumo\" style=\"font-size: 18px; color: #064000;\">\n                            5.6 \u0111i\u1ec3m                        <\/span>\n                    <\/a>\n                                    <a href=\"https:\/\/hatdau.com\/?page_id=616\" class=\"hstb-item-card\">\n                        <div style=\"display: flex; align-items: center; gap: 16px;\">\n                            <div class=\"font-agbalumo\" style=\"width: 40px; height: 40px; border-radius: 50%; background: #064000; color: #ffffff; display: flex; align-items: center; justify-content: center; font-size: 16px; flex-shrink: 0;\">\n                                3                            <\/div>\n                            <div style=\"font-size: 17px; font-weight: 800; color: #0f172a;\">\n                                Tr\u1ea7n Ch\u00ed Ki\u00ean                                <span style=\"display: block; font-size: 14px; font-weight: 600; color: #475569; margin-top: 3px;\">\n                                    Ch\u1ee7 \u0111\u1ec1 2: Xin ch\u00e0o                                <\/span>\n                            <\/div>\n                        <\/div>\n                        <span class=\"font-agbalumo\" style=\"font-size: 18px; color: #064000;\">\n                            3 \u0111i\u1ec3m                        <\/span>\n                    <\/a>\n                \n                                    <div class=\"font-agbalumo\" style=\"text-align: center; padding: 16px; color: #064000; font-size: 18px; background: #e8f5e9; border-radius: 16px; border: 2.5px dashed #064000; margin-top: 8px;\">\n                        H\u00e3y h\u1ecdc th\u1eadt ch\u0103m ch\u1ec9! \ud83c\udf1f\n                    <\/div>\n                                    <\/div>\n    <\/div>\n    <\/div>\n\t\t\t\t\t\t<\/div>\n\t\t\n<\/div>\n\n<\/div>\n<div class=\"elementor-element elementor-element-60c31fd e-con e-atomic-element e-flexbox-base e-60c31fd-8c0caec ipad \" data-id=\"60c31fd\" data-element_type=\"e-flexbox\" data-e-type=\"e-flexbox\" data-interaction-id=\"60c31fd\">\n    <div class=\"elementor-element elementor-element-1da3850 e-con e-atomic-element e-flexbox-base e-1da3850-0b9f37a ipad \" data-id=\"1da3850\" data-element_type=\"e-flexbox\" data-e-type=\"e-flexbox\" data-interaction-id=\"1da3850\">\n    \t\t<div class=\"elementor-element elementor-element-a852e24 elementor-widget elementor-widget-shortcode\" data-id=\"a852e24\" data-element_type=\"widget\" data-e-type=\"widget\" data-widget_type=\"shortcode.default\">\n\t\t\t\t\t\t\t<div class=\"elementor-shortcode\">    <style>\n        @import url('https:\/\/fonts.googleapis.com\/css2?family=Bitter:wght@700;800&display=swap');\n\n        \/* === M\u00c1Y T\u00cdNH (DESKTOP) - GI\u1eee NGUY\u00caN N\u00daT N\u1eb0M D\u1eccC C\u1ed8T B\u00caN TR\u00c1I === *\/\n        .sidebar-buttons-container {\n            display: flex;\n            flex-direction: column;\n            gap: 16px;\n            width: 100%;\n            box-sizing: border-box;\n        }\n\n        .btn-khoi-cute {\n            border: none !important;\n            font-family: 'Bitter', serif !important;\n            font-weight: 800;\n            padding: 18px 20px;\n            border-radius: 18px;\n            cursor: pointer;\n            transition: all 0.2s ease;\n            text-align: center;\n            font-size: 22px !important;\n            white-space: nowrap;\n            width: 100%;\n            background-color: #ffffff !important;\n            box-shadow: 0 4px 12px rgba(0,0,0,0.06);\n            box-sizing: border-box;\n        }\n\n        .btn-khoi-10 { color: #a1d489 !important; }\n        .btn-khoi-11 { color: #87cd67 !important; }\n        .btn-khoi-12 { color: #65c837 !important; }\n\n        .btn-khoi-cute:hover, .btn-khoi-cute.active {\n            transform: translateY(-2px);\n            box-shadow: 0 6px 16px rgba(0, 0, 0, 0.12);\n        }\n\n        \/* === CH\u1ec8 D\u00c0N H\u00c0NG NGANG TR\u00caN IPAD & \u0110I\u1ec6N THO\u1ea0I (MAX-WIDTH: 1024PX) === *\/\n        @media (max-width: 1024px) {\n            .elementor-widget-shortcode,\n            .elementor-widget-container {\n                width: 100% !important;\n                padding-left: 0 !important;\n                padding-right: 0 !important;\n            }\n            .sidebar-buttons-container {\n                flex-direction: row !important;\n                justify-content: space-between !important;\n                gap: 10px !important;\n                width: 100% !important;\n                margin-bottom: 16px !important;\n            }\n            .btn-khoi-cute {\n                flex: 1 1 0% !important;\n                width: 100% !important;\n                padding: 12px 6px !important;\n                font-size: 16px !important;\n                border-radius: 14px !important;\n            }\n        }\n\n        @media (max-width: 640px) {\n            .sidebar-buttons-container {\n                gap: 8px !important;\n            }\n            .btn-khoi-cute {\n                padding: 10px 4px !important;\n                font-size: 14px !important;\n                border-radius: 12px !important;\n            }\n        }\n    <\/style>\n\n    <div class=\"sidebar-buttons-container\">\n        <button onclick=\"filterGradeMain(10)\" id=\"btn-grade-10\" class=\"btn-khoi-cute btn-khoi-10\">Kh\u1ed1i 10<\/button>\n        <button onclick=\"filterGradeMain(11)\" id=\"btn-grade-11\" class=\"btn-khoi-cute btn-khoi-11\">Kh\u1ed1i 11<\/button>\n        <button onclick=\"filterGradeMain(12)\" id=\"btn-grade-12\" class=\"btn-khoi-cute btn-khoi-12\">Kh\u1ed1i 12<\/button>\n    <\/div>\n    <\/div>\n\t\t\t\t\t\t<\/div>\n\t\t\n<\/div>\n\n<\/div>\n<div class=\"elementor-element elementor-element-a1d95a1 e-con e-atomic-element e-flexbox-base e-a1d95a1-e8ac8e7 ipad \" data-id=\"a1d95a1\" data-element_type=\"e-flexbox\" data-e-type=\"e-flexbox\" data-interaction-id=\"a1d95a1\">\n    <div class=\"elementor-element elementor-element-6b40a0e e-con e-atomic-element e-flexbox-base e-6b40a0e-78ce2f0 ipad \" data-id=\"6b40a0e\" data-element_type=\"e-flexbox\" data-e-type=\"e-flexbox\" data-interaction-id=\"6b40a0e\">\n    \t\t<div class=\"elementor-element elementor-element-b3b7efb elementor-widget elementor-widget-shortcode\" data-id=\"b3b7efb\" data-element_type=\"widget\" data-e-type=\"widget\" data-widget_type=\"shortcode.default\">\n\t\t\t\t\t\t\t<div class=\"elementor-shortcode\">    <style>\n        @import url('https:\/\/fonts.googleapis.com\/css2?family=Bitter:wght@700;800&family=Nunito:wght@700;800;900&display=swap');\n\n        \/* === M\u00c1Y T\u00cdNH (DESKTOP) - CHU\u1ea8N L\u01af\u1edaI 3 C\u1ed8T B\u00c0I H\u1eccC G\u1ed0C === *\/\n        .grid-cards-col {\n            display: grid;\n            grid-template-columns: repeat(3, minmax(0, 1fr));\n            gap: 18px;\n            width: 100%;\n            box-sizing: border-box;\n        }\n\n        .card-item-cute {\n            width: 100%;\n            height: 240px;\n            box-sizing: border-box;\n            background: #ffffff;\n            border-radius: 20px;\n            display: flex;\n            flex-direction: column;\n            justify-content: space-between;\n            align-items: center;\n            overflow: hidden;\n            cursor: pointer;\n            transition: transform 0.2s ease, box-shadow 0.2s ease;\n            box-shadow: 0 4px 12px rgba(0,0,0,0.04);\n            position: relative;\n        }\n\n        .card-item-cute:hover {\n            transform: translateY(-4px);\n            box-shadow: 0 10px 20px rgba(17, 59, 2, 0.12);\n        }\n\n        .card-header-box {\n            width: calc(100% - 16px);\n            margin: 8px 8px 0 8px;\n            padding: 10px 6px;\n            border-radius: 14px;\n            text-align: center;\n            font-family: 'Bitter', serif !important;\n            font-weight: 800;\n            font-size: 18px;\n            color: #113b02 !important;\n            box-sizing: border-box;\n        }\n\n        .header-grade-10 { background-color: #a1d489; }\n        .header-grade-11 { background-color: #87cd67; }\n        .header-grade-12 { background-color: #65c837; }\n\n        .card-body-cute {\n            padding: 6px 10px;\n            text-align: center;\n            flex: 1;\n            display: flex;\n            align-items: center;\n            justify-content: center;\n            width: 100%;\n            box-sizing: border-box;\n        }\n\n        .card-title-cute {\n            font-weight: 900;\n            color: #113b02;\n            font-size: 18px;\n            margin: 0;\n            line-height: 1.3;\n            font-family: 'Nunito', sans-serif;\n            text-transform: uppercase;\n            text-align: center;\n            display: -webkit-box;\n            -webkit-line-clamp: 2;\n            -webkit-box-orient: vertical;\n            overflow: hidden;\n            word-break: break-word;\n        }\n\n        .card-foot-cute {\n            padding-bottom: 12px;\n            text-align: center;\n            width: 100%;\n        }\n\n        .chude-link-btn {\n            font-weight: 800;\n            color: #113b02;\n            font-size: 13px;\n            font-family: 'Nunito', sans-serif;\n            text-decoration: none;\n            padding: 3px 10px;\n            border-radius: 6px;\n            transition: background 0.2s ease;\n        }\n\n        .chude-link-btn:hover {\n            background: #e8f5e9;\n            text-decoration: underline;\n        }\n\n        \/* === IPAD (TABLET) === *\/\n        @media (max-width: 1024px) {\n            .grid-cards-col { \n                grid-template-columns: repeat(3, minmax(0, 1fr)) !important; \n                gap: 12px !important;\n                width: 100% !important;\n            }\n            .card-item-cute {\n                height: 185px !important;\n                border-radius: 16px !important;\n            }\n            .card-header-box {\n                padding: 8px 4px !important;\n                font-size: 15px !important;\n            }\n            .card-title-cute {\n                font-size: 14px !important;\n            }\n        }\n\n        \/* === \u0110I\u1ec6N THO\u1ea0I (MOBILE) === *\/\n        @media (max-width: 640px) {\n            .grid-cards-col { \n                grid-template-columns: repeat(2, minmax(0, 1fr)) !important; \n                gap: 10px !important;\n                width: 100% !important;\n            }\n            .card-item-cute {\n                height: 170px !important;\n                border-radius: 14px !important;\n            }\n            .card-header-box {\n                padding: 6px 4px !important;\n                font-size: 14px !important;\n                margin: 6px 6px 0 6px !important;\n                width: calc(100% - 12px) !important;\n            }\n            .card-title-cute {\n                font-size: 13px !important;\n            }\n            .chude-link-btn {\n                font-size: 11px !important;\n                padding: 2px 6px !important;\n            }\n        }\n    <\/style>\n\n    <div class=\"grid-cards-col\" id=\"lessons-grid-box\">\n                                    <div class=\"card-item-cute lesson-card-item grade-item-11\" data-grade=\"11\" onclick=\"window.location.href='https:\/\/hatdau.com\/?bai-hoc=bai-1'\">\n                    \n                    <div class=\"card-header-box header-grade-11\">\n                        L\u1edbp 11                    <\/div>\n\n                    <div class=\"card-body-cute\">\n                        <p class=\"card-title-cute\">B\u00e0i 1<\/p>\n                    <\/div>\n\n                    <div class=\"card-foot-cute\">\n                        <a href=\"https:\/\/hatdau.com\/?page_id=616&#038;chude_id=20\" class=\"chude-link-btn\" onclick=\"event.stopPropagation();\">\n                            Ch\u1ee7 \u0111\u1ec1 .....                        <\/a>\n                    <\/div>\n                <\/div>\n                            <div class=\"card-item-cute lesson-card-item grade-item-12\" data-grade=\"12\" onclick=\"window.location.href='https:\/\/hatdau.com\/?bai-hoc=bai-3-hahaha'\">\n                    \n                    <div class=\"card-header-box header-grade-12\">\n                        L\u1edbp 12                    <\/div>\n\n                    <div class=\"card-body-cute\">\n                        <p class=\"card-title-cute\">B\u00e0i 3: Hahaha<\/p>\n                    <\/div>\n\n                    <div class=\"card-foot-cute\">\n                        <a href=\"https:\/\/hatdau.com\/?page_id=616&#038;chude_id=19\" class=\"chude-link-btn\" onclick=\"event.stopPropagation();\">\n                            Ch\u1ee7 \u0110\u1ec1 3: Lyric                        <\/a>\n                    <\/div>\n                <\/div>\n                            <div class=\"card-item-cute lesson-card-item grade-item-11\" data-grade=\"11\" onclick=\"window.location.href='https:\/\/hatdau.com\/?bai-hoc=bai-1-bai-hoc-ne'\">\n                    \n                    <div class=\"card-header-box header-grade-11\">\n                        L\u1edbp 11                    <\/div>\n\n                    <div class=\"card-body-cute\">\n                        <p class=\"card-title-cute\">B\u00e0i 1: B\u00e0i h\u1ecdc n\u00e8<\/p>\n                    <\/div>\n\n                    <div class=\"card-foot-cute\">\n                        <a href=\"https:\/\/hatdau.com\/?page_id=616&#038;chude_id=18\" class=\"chude-link-btn\" onclick=\"event.stopPropagation();\">\n                            Ch\u1ee7 \u0111\u1ec1 2                        <\/a>\n                    <\/div>\n                <\/div>\n                            <div class=\"card-item-cute lesson-card-item grade-item-10\" data-grade=\"10\" onclick=\"window.location.href='https:\/\/hatdau.com\/?bai-hoc=bai-1-bai-hoc-thu-nghiem'\">\n                    \n                    <div class=\"card-header-box header-grade-10\">\n                        L\u1edbp 10                    <\/div>\n\n                    <div class=\"card-body-cute\">\n                        <p class=\"card-title-cute\">B\u00e0i 1: B\u00e0i h\u1ecdc th\u1eed nghi\u1ec7m<\/p>\n                    <\/div>\n\n                    <div class=\"card-foot-cute\">\n                        <a href=\"https:\/\/hatdau.com\/?page_id=616&#038;chude_id=17\" class=\"chude-link-btn\" onclick=\"event.stopPropagation();\">\n                            Ch\u1ee7 \u0111\u1ec1 1                        <\/a>\n                    <\/div>\n                <\/div>\n                        <\/div>\n\n    <script>\n        let currentSelectedGradeMain = 'all';\n\n        function filterGradeMain(grade) {\n            if (currentSelectedGradeMain === grade) {\n                currentSelectedGradeMain = 'all';\n                document.querySelectorAll('.btn-khoi-cute').forEach(btn => btn.classList.remove('active'));\n            } else {\n                currentSelectedGradeMain = grade;\n                document.querySelectorAll('.btn-khoi-cute').forEach(btn => btn.classList.remove('active'));\n                const activeBtn = document.getElementById(`btn-grade-${grade}`);\n                if (activeBtn) activeBtn.classList.add('active');\n            }\n\n            const allCards = document.querySelectorAll('.lesson-card-item');\n            let visibleCount = 0;\n\n            allCards.forEach(card => {\n                const cardGrade = card.getAttribute('data-grade');\n                if (currentSelectedGradeMain === 'all' || cardGrade == currentSelectedGradeMain) {\n                    if (visibleCount < 12) {\n                        card.style.display = 'flex';\n                        visibleCount++;\n                    } else {\n                        card.style.display = 'none';\n                    }\n                } else {\n                    card.style.display = 'none';\n                }\n            });\n        }\n\n        document.addEventListener(\"DOMContentLoaded\", function() {\n            filterGradeMain('all');\n        });\n    <\/script>\n    <\/div>\n\t\t\t\t\t\t<\/div>\n\t\t\n<\/div>\n\n<\/div>\n<div class=\"elementor-element elementor-element-a7bcb57 e-con e-atomic-element e-flexbox-base e-bba2b70 ipad \" data-id=\"a7bcb57\" data-element_type=\"e-flexbox\" data-e-type=\"e-flexbox\" data-interaction-id=\"a7bcb57\">\n    <div class=\"elementor-element elementor-element-c98dd17 e-con e-atomic-element e-flexbox-base e-c98dd17-e21de96 ipad \" data-id=\"c98dd17\" data-element_type=\"e-flexbox\" data-e-type=\"e-flexbox\" data-interaction-id=\"c98dd17\">\n    \t\t<div class=\"elementor-element elementor-element-b90b2ce elementor-widget elementor-widget-shortcode\" data-id=\"b90b2ce\" data-element_type=\"widget\" data-e-type=\"widget\" data-widget_type=\"shortcode.default\">\n\t\t\t\t\t\t\t<div class=\"elementor-shortcode\">    <link rel=\"preconnect\" href=\"https:\/\/fonts.googleapis.com\">\n    <link rel=\"preconnect\" href=\"https:\/\/fonts.gstatic.com\" crossorigin>\n    <link href=\"https:\/\/fonts.googleapis.com\/css2?family=Agbalumo&display=swap\" rel=\"stylesheet\">\n\n    <style>\n        .font-agbalumo {\n            font-family: 'Agbalumo', cursive, system-ui !important;\n        }\n        .hstb-item-card {\n            transition: all 0.2s ease-in-out;\n            text-decoration: none !important;\n            display: flex;\n            align-items: center;\n            justify-content: space-between;\n            padding: 16px 20px; \/* Padding h\u00e0ng to r\u1ed9ng r\u00e3i *\/\n            border-radius: 20px;\n            background: #f0fdf4;\n            border: 2px solid #a5d6a7;\n            cursor: pointer;\n            width: 100%;\n            box-sizing: border-box;\n        }\n        .hstb-item-card:hover {\n            background: #e8f5e9;\n            transform: translateX(4px);\n            border-color: #064000;\n            box-shadow: 0 6px 16px rgba(6, 64, 0, 0.18);\n        }\n        .hstb-wrapper-box {\n            width: 100% !important;\n            max-width: 100% !important;\n            height: 100% !important;\n            min-height: 480px; \/* \u0110\u1ea9y chi\u1ec1u cao t\u1ed1i thi\u1ec3u l\u00ean c\u1ef1c to *\/\n            background: #ffffff;\n            border-radius: 32px; \/* Bo g\u00f3c to theo t\u1ec9 l\u1ec7 *\/\n            border: 4px solid #064000; \/* Vi\u1ec1n d\u00e0y d\u1eb7n h\u01a1n *\/\n            overflow: hidden;\n            box-shadow: 0 12px 28px -4px rgba(6, 64, 0, 0.3);\n            box-sizing: border-box !important;\n            display: flex;\n            flex-direction: column;\n            margin: 0 auto;\n        }\n    <\/style>\n\n    <div class=\"hstb-wrapper-box\">\n        <!-- HEADER C\u1ee0 CH\u1eee SI\u00caU TO 32PX -->\n        <div class=\"font-agbalumo\" style=\"background: #064000; color: #ffffff; font-weight: 400; padding: 26px 16px; text-align: center; font-size: 32px; white-space: nowrap; box-sizing: border-box; width: 100%;\">\n            H\u1ecdc Sinh Ti\u00eau Bi\u1ec3u\n        <\/div>\n        \n        <div style=\"padding: 32px 24px; display: flex; flex-direction: column; gap: 16px; flex: 1; justify-content: center; box-sizing: border-box; width: 100%;\">\n                                                <a href=\"https:\/\/hatdau.com\/?page_id=616\" class=\"hstb-item-card\">\n                        <div style=\"display: flex; align-items: center; gap: 16px;\">\n                            <div class=\"font-agbalumo\" style=\"width: 40px; height: 40px; border-radius: 50%; background: #064000; color: #ffffff; display: flex; align-items: center; justify-content: center; font-size: 16px; flex-shrink: 0;\">\n                                1                            <\/div>\n                            <div style=\"font-size: 17px; font-weight: 800; color: #0f172a;\">\n                                Ki\u00ean                                <span style=\"display: block; font-size: 14px; font-weight: 600; color: #475569; margin-top: 3px;\">\n                                    Ch\u1ee7 \u0111\u1ec1 2: Xin ch\u00e0o                                <\/span>\n                            <\/div>\n                        <\/div>\n                        <span class=\"font-agbalumo\" style=\"font-size: 18px; color: #064000;\">\n                            10.4 \u0111i\u1ec3m                        <\/span>\n                    <\/a>\n                                    <a href=\"https:\/\/hatdau.com\/?page_id=616\" class=\"hstb-item-card\">\n                        <div style=\"display: flex; align-items: center; gap: 16px;\">\n                            <div class=\"font-agbalumo\" style=\"width: 40px; height: 40px; border-radius: 50%; background: #064000; color: #ffffff; display: flex; align-items: center; justify-content: center; font-size: 16px; flex-shrink: 0;\">\n                                2                            <\/div>\n                            <div style=\"font-size: 17px; font-weight: 800; color: #0f172a;\">\n                                hi                                <span style=\"display: block; font-size: 14px; font-weight: 600; color: #475569; margin-top: 3px;\">\n                                    Ch\u1ee7 \u0111\u1ec1 2: Xin ch\u00e0o                                <\/span>\n                            <\/div>\n                        <\/div>\n                        <span class=\"font-agbalumo\" style=\"font-size: 18px; color: #064000;\">\n                            5.6 \u0111i\u1ec3m                        <\/span>\n                    <\/a>\n                                    <a href=\"https:\/\/hatdau.com\/?page_id=616\" class=\"hstb-item-card\">\n                        <div style=\"display: flex; align-items: center; gap: 16px;\">\n                            <div class=\"font-agbalumo\" style=\"width: 40px; height: 40px; border-radius: 50%; background: #064000; color: #ffffff; display: flex; align-items: center; justify-content: center; font-size: 16px; flex-shrink: 0;\">\n                                3                            <\/div>\n                            <div style=\"font-size: 17px; font-weight: 800; color: #0f172a;\">\n                                Tr\u1ea7n Ch\u00ed Ki\u00ean                                <span style=\"display: block; font-size: 14px; font-weight: 600; color: #475569; margin-top: 3px;\">\n                                    Ch\u1ee7 \u0111\u1ec1 2: Xin ch\u00e0o                                <\/span>\n                            <\/div>\n                        <\/div>\n                        <span class=\"font-agbalumo\" style=\"font-size: 18px; color: #064000;\">\n                            3 \u0111i\u1ec3m                        <\/span>\n                    <\/a>\n                \n                                    <div class=\"font-agbalumo\" style=\"text-align: center; padding: 16px; color: #064000; font-size: 18px; background: #e8f5e9; border-radius: 16px; border: 2.5px dashed #064000; margin-top: 8px;\">\n                        H\u00e3y h\u1ecdc th\u1eadt ch\u0103m ch\u1ec9! \ud83c\udf1f\n                    <\/div>\n                                    <\/div>\n    <\/div>\n    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