/*==========================================================
                        C U S T O M
==========================================================*/
p {
  margin-bottom: 10px;
}
.under main .image_l {
  float: left;
  margin: 0 50px 0 0;
}
.under main .image_r {
  float: right;
  margin: 0 0 0 50px;
}
.under main .txt_img {
  text-align: center;
  font-size: 80%;
  display: block;
}

/* MB */
.under main .mb10 {
  margin-bottom: 10px;
}
.under main .mb20 {
  margin-bottom: 20px;
}
.under main .mb30 {
  margin-bottom: 30px;
}
.under main .mb40 {
  margin-bottom: 40px;
}
.under main .mb50 {
  margin-bottom: 50px;
}
.under main .mb60 {
  margin-bottom: 60px;
}
.under main .mb70 {
  margin-bottom: 70px;
}
.under main .mb80 {
  margin-bottom: 80px;
}
.under main .mb90 {
  margin-bottom: 90px;
}

/* MT */
.under main .mt10 {
  margin-top: 10px;
}
.under main .mt20 {
  margin-top: 20px;
}
.under main .mt30 {
  margin-top: 30px;
}
.under main .mt40 {
  margin-top: 40px;
}
.under main .mt50 {
  margin-top: 50px;
}
.under main .mt60 {
  margin-top: 60px;
}
.under main .mt70 {
  margin-top: 70px;
}
.under main .mt80 {
  margin-top: 80px;
}
.under main .mt90 {
  margin-top: 90px;
}

/* MAX_W */
.under main .max_w200 {
  width: 100%;
  max-width: 200px;
}
.under main .max_w250 {
  width: 100%;
  max-width: 250px;
}
.under main .max_w300 {
  width: 100%;
  max-width: 300px;
}
.under main .max_w350 {
  width: 100%;
  max-width: 350px;
}
.under main .max_w500 {
  width: 100%;
  max-width: 500px;
}
.under main .max_w600 {
  width: 100%;
  max-width: 600px;
}
.under main .max_w700 {
  width: 100%;
  max-width: 700px;
}
.under main .max_w800 {
  width: 100%;
  max-width: 800px;
}
.under main .max_w900 {
  width: 100%;
  max-width: 900px;
}

/* MIN-W */
.under main .min_w200 {
  min-width: 200px;
}
.under main .min_w250 {
  min-width: 250px;
}
.under main .min_w300 {
  min-width: 300px;
}
.under main .min_w350 {
  min-width: 350px;
}
.under main .min_w500 {
  min-width: 500px;
}

/*==========================================================
                        H E A D I N G
==========================================================*/
.under main h2,
.under main h3,
.under main h4,
.under main h5,
.under main h6 {
  font-weight: 900;
  margin-bottom: 15px;
}

.under main h2 {
  font-size: 38px;
  text-align: center;
  margin-bottom: 0;
  color: var(--txt);
  text-transform: capitalize;
}
.under main h2 .en {
  display: block;
  font-size: 80%;
  text-transform: capitalize;
}

.under main h3 {
  font-size: 30px;
  text-align: center;
  color: var(--dark-blue);
}
.under main h3 .en {
  font-size: 80%;
  color: var(--dark-blue);
  display: block;
}

.under main h4 {
  font-size: 26px;
  position: relative;
  color: var(--dark-blue);
}

.under main h5 {
  font-size: 20px;
  color: var(--dark-blue);
  color: var(--dark-blue);
}
.under main h6 {
  font-size: 18px;
  position: relative;
  color: var(--dark-blue);
}

.under main #ez-toc-container a {
  font-size: 16px;
}
.under main #ez-toc-container.ez-toc-light-blue {
  background: #fff;
}

/*==========================================================
                        FONT FAMILY
==========================================================*/

/*==========================================================
                      MAIN - CONTENT
==========================================================*/
.under main #content {
  padding: 0 0 120px;
}
.under main section {
  padding: 0 0 80px;
  margin-bottom: 0;
}
.under main section:last-child {
  padding: 0;
}
.under main ol li {
  list-style: decimal;
}
.under main .sec_list_cate {
  padding-bottom: 34px;
}

/* LINK + BUTTON TOP */
.under main .link {
  text-decoration: underline;
  color: var(--dark-blue);
}

/*============ TOP INFO ============ */
/*.under main #top_info{height:310px;width:100%;max-width:1920px;margin:0 auto;background:url('../images/top_info_bg.jpg') no-repeat center /cover;}
.under main #top_info .inner{display:flex;flex-direction:column;justify-content:center;align-items:center;width:100%;height:100%}
.under main #top_info h2{position: relative;z-index: 2}
.under main #top_info h2::before{content: '';position: absolute;width: calc(100% + 200px);height: 100%;min-height: 120px;border-radius: 20px;border: 8px solid #fff;box-shadow: 0 0 10px rgba(0,0,0,0.2);left: 50%;top: 50%;transform: translate(-50%,-50%);z-index: -1;background: var(--l_purple)}*/
/*==========================================================
                    T O P I C   P A T H
==========================================================*/
.under main #topic_path {
  margin-bottom: 12px;
}
.under main #topic_path ul {
  display: block;
  padding: 10px 0;
}
.under main #topic_path li {
  display: inline;
  position: relative;
}
.under main #topic_path li:not(:last-child)::after {
  content: "";
  position: relative;
  width: 6px;
  height: 13px;
  background: url("../images/topic_path_ic.png") no-repeat center / cover;
  display: inline-block;
  margin: 0 5px 0 10px;
  top: 2px;
  pointer-events: none;
}
.under main #topic_path li {
  color: var(--purple);
}

/*============ LIST ANCHOR LINK ============ */
.under main .list_anchor {
  display: flex;
  align-items: center;
  flex-wrap: wrap;
  justify-content: center;
  width: 100%;
  margin-bottom: 30px;
}
.under main .list_anchor .btn {
  margin: 0 10px 15px;
}
.under main .list_anchor:last-child {
  margin-bottom: -15px;
}

.under main .list_cat_btn {
  display: flex;
  justify-content: center;
  align-items: center;
  flex-wrap: wrap;
  width: 100%;
  margin: 0 -15px 15px;
}
.under main .list_cat_btn li {
  margin: 0 15px 15px;
}
.under main .list_cat_btn .van-hoa {
  order: 2;
}
.under main .list_cat_btn li a {
  font-size: var(--mfont-size);
  font-weight: 700;
  width: 160px;
  height: 40px;
  display: flex;
  align-items: center;
  justify-content: center;
  border-radius: 50px;
  background: var(--purple);
  color: #fff;
}
.under main .list_cat_btn li.tax_active a {
  background: var(--l_purple);
}

/*==========================================================
                        T A B L E
==========================================================*/
.under main table.td_top td {
  vertical-align: top;
}
.under main table.tb_fix {
  table-layout: fixed;
}

.under main table {
  margin-bottom: 10px;
}
.under main table.mailform th,
.under main table th {
  background: var(--dark-blue);
  color: #fff;
  font-weight: 700;
  font-size: var(--mfont-size);
}
.under main table.mailform th span {
  color: #fff;
}
.under main table.mailform td .info {
  color: var(--dark-blue);
}

.under main table td {
  border-color: var(--dark-blue);
  background: #fff;
}
.under main table th,
.under main table td {
  padding: 15px;
}
.under main table img {
  display: block;
  margin: auto;
}

.under main table th {
  border-color: var(--dark-blue);
  border-right-color: #fff;
}
.under main table tr th:first-child {
  border-left-color: var(--dark-blue);
}
.under main table tr th:last-child {
  border-right-color: var(--dark-blue);
}
.under main table.mailform th,
.under main table.tb_block th {
  border-color: var(--dark-blue);
  border-bottom-color: #fff;
}
.under main table.mailform tr:first-child th,
.under main table.tb_block tr:first-child th {
  border-top-color: var(--dark-blue);
}
.under main table.mailform tr:last-child th,
.under main table.tb_block tr:last-child th {
  border-bottom-color: var(--dark-blue);
}

/*============ LIST ============ */
.under main .in_block {
  display: inline-block;
}
/* LIST 01 */
.under main .post_detail_content ul,
.under main .list01 {
  margin-bottom: 30px;
}
.under main .post_detail_content ul:not([class^="ez-toc"]) li,
.under main .list01 li {
  display: block;
  padding-left: 25px;
  margin-bottom: 5px;
  position: relative;
}
.under main .post_detail_content ul:not([class^="ez-toc"]) li::before,
.under main .list01 li::before {
  background: var(--dark-blue);
  width: 8px;
  height: 8px;
  position: absolute;
  top: 11px;
  left: 0;
  content: "";
  border-radius: 50%;
}

/* LIST 02 */
.under main .list02 {
  margin-bottom: 30px;
}
.under main .list02 li {
  counter-increment: li;
  padding-left: 30px;
  position: relative;
  margin-bottom: 10px;
}
.under main .list02 li::before {
  content: counter(li);
  position: absolute;
  width: 22px;
  height: 22px;
  display: flex;
  justify-content: center;
  align-items: center;
  border-radius: 50%;
  left: 0;
  top: 2px;
  background-color: var(--mcolor);
  font-size: 12px;
  font-weight: bold;
  color: #fff;
  line-height: 22px;
}

/* LIST CHECK */
.under main .list_check {
  margin-bottom: 30px;
}
.under main .list_check li {
  display: block;
  padding-left: 25px;
  margin-bottom: 5px;
  position: relative;
}
.under main .list_check li::before {
  content: "";
  display: block;
  position: absolute;
  top: 5px;
  left: 5px;
  width: 7px;
  height: 15px;
  border: solid var(--mcolor);
  border-width: 0 2px 2px 0;
  transform: rotate(45deg);
}

/* STEP LIST */
.under main dl.list_step {
  box-sizing: border-box;
  margin-bottom: 120px;
  position: relative;
}
.under main dl.list_step::before {
  content: "";
  position: absolute;
  border-style: solid;
  border-width: 40px 90px 0 90px;
  border-color: var(--mcolor) transparent transparent transparent;
  left: calc(50% - 90px);
  bottom: -80px;
}
.under main dl.list_step:last-child::before {
  display: none;
}
.under main dl.list_step:last-child {
  margin-bottom: 0;
}
.under main dl.list_step dt {
  display: flex;
  align-items: center;
  background: var(--mcolor);
  border-radius: 10px 10px 0 0;
}
.under main dl.list_step.step_center dt {
  justify-content: center;
  padding: 0 30px;
}
.under main dl.list_step dt p {
  font-size: 22px;
  font-weight: 500;
  border-bottom: none;
  color: #fff;
  margin-bottom: 0;
}
.under main dl.list_step dt .step_num {
  position: relative;
  font-size: 24px;
  top: 0;
  font-weight: 700;
  padding: 5px 15px;
}
.under main dl.list_step dd {
  padding: 20px;
  position: relative;
  border: 5px solid var(--mcolor);
  border-top: 0;
  border-radius: 0 0 10px 10px;
  background: var(--scolor);
}

/*  FAQ LIST */
.under main .faq_box01 dl {
  margin-bottom: 15px;
}
.under main .faq_box01 dl:last-child {
  margin-bottom: 0;
}
.under main .faq_box01 dl > dt {
  padding: 15px 50px 15px 20px;
  font-size: var(--mfont-size);
  color: #fff;
  font-weight: 700;
  position: relative;
  cursor: pointer;
}
.under main .faq_box01 dl > dt.active::before {
  transform: rotate(90deg);
  opacity: 0;
}
.under main .faq_box01 dl > dt::before {
  content: "";
  position: absolute;
  width: 1px;
  height: 32px;
  right: 30px;
  top: calc(50% - 16px);
  background: #fff;
  transition: 0.3s;
}
.under main .faq_box01 dl > dt::after {
  content: "";
  position: absolute;
  width: 32px;
  height: 1px;
  right: 15px;
  top: 50%;
  background: #fff;
}
.under main .faq_box01 dl > dt {
  background: var(--mcolor);
  transition: 0.3s;
}
.under main .faq_box01 dl .d-flex {
  display: flex;
  align-items: flex-start;
}
.under main .qa_ttl {
  font-size: 30px;
  font-weight: 500;
  margin: 0 20px 0 0;
  line-height: 1.1em;
}
.under main dl dt p {
  font-size: var(--mfont-size);
  font-weight: 700;
  color: #fff;
}
.under main .faq_box01 dl > dt .qa_ttl {
  color: #fff;
}
.under main .faq_box01 dl > dd {
  padding: 20px 50px 20px 20px;
  display: none;
  background: var(--l_blue);
  color: var(--txt);
}
.under main .faq_box01 .list01 li {
  color: #fff;
}
.under main .faq_box01 .list01 li::before {
  background: #fff;
}

/*============ FRAME ============ */
/* FRAME 01 */
.under main .frame01 {
  border: 3px solid var(--mcolor);
  padding: 50px 30px;
  background: var(--mcolor);
  border-radius: 10px;
  margin-bottom: 50px;
}

/* FRAME 02 */
.under main .frame02 {
  border: 1px solid #e6e6e6;
  padding: 25px;
  background: var(--scolor);
  margin-bottom: 50px;
}

/* FRAME PICKUP */
.under main .frame_pick {
  border: 1px solid #000;
  padding: 25px;
  background: var(--scolor);
  margin-bottom: 50px;
}
.under main .frame_pick .pick_ttl {
  font-size: 24px;
}
.under main .frame_pick .pick_ttl span {
  font-size: 36px;
  display: block;
}

/* IFRAME BOX */
.under main .box_ytb {
  width: 900px;
  height: auto;
  margin: 0 auto;
  aspect-ratio: 16/9;
  max-width: 100%;
}
.under main .box_ytb iframe {
  width: 100%;
  height: 100%;
  border: none;
  outline: none;
}

/*FRAME readmore*/
.under main .frame_readmore {
  padding: 15px 20px;
  border-left: 3px solid #93a3fa;
  background: #d9dfff;
}

/* ===========  PAGINATION ===========  */
.under main .wp_pagination {
  display: flex;
  justify-content: center;
  flex-wrap: wrap;
  text-align: center;
  margin: 0 10px;
}
.under main .wp_pagination .page-numbers {
  width: 40px;
  height: 40px;
  text-align: center;
  border: 1px solid var(--purple);
  background: #fff;
  display: flex;
  color: var(--purple);
  justify-content: center;
  align-items: center;
  border-radius: 5px;
  margin: 0 5px 10px;
}
.under main .wp_pagination .prev,
.under main .wp_pagination .next {
  width: 80px;
}
.under main .wp_pagination a:hover,
.under main .wp_pagination a.active,
.under main .wp_pagination .current {
  background: var(--purple);
  color: #fff;
}
.under main .wp_pagination a.active {
  pointer-events: none;
}
.under main .wp_pagination a.disabled {
  display: none;
}

.under main .btn_box {
  display: flex;
  justify-content: center;
  align-items: center;
  margin: 0 -10px 30px;
}
.under main .btn_box .btn {
  margin: 0 10px;
}

/*POST LIST*/
.under main .post_list {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  grid-gap: 19px;
  width: 100%;
  max-width: 1196px;
  margin: 0 auto;
}
.under main .post_list.shades {
  grid-template-columns: repeat(2, 1fr);
}
.under main .post_img {
  display: flex;
  align-items: center;
  justify-content: center;
  height: 250px;
  background: #cccccc;
  margin-bottom: 15px;
  border-radius: 10px 10px 0 0;
}
.under main .post_img img {
  width: 100%;
  height: 100%;
  object-fit: cover;
  border-radius: 10px 10px 0 0;
}
.under main .post_content {
  font-size: var(--mfont-size);
  display: flex;
  flex-direction: column;
  padding: 0 10px 10px;
}
.under main .post_date {
  font-size: 80%;
  line-height: 1.5em;
}
.under main .post_ttl {
  font-size: 120%;
  line-height: 1.3em;
  font-weight: 700;
  color: #000;
  transition: 0.3s;
  line-clamp: 2;
  -webkit-line-clamp: 2;
  -webkit-box-orient: vertical;
  overflow: hidden;
  display: -webkit-box;
  margin-bottom: 10px;
  height: 58px;
  font-weight: 900;
}
.under main .post_des {
  line-height: 1.5em;
  line-clamp: 2;
  -webkit-line-clamp: 2;
  -webkit-box-orient: vertical;
  overflow: hidden;
  display: -webkit-box;
  margin-bottom: 10px;
  max-height: 39px;
  font-size: 80%;
}
.under main .post_list li a {
  border-radius: 10px;
  transition: 0.3s;
  background: var(--l_purple);
  display: block;
  height: 100%;
}
.under main .sec_full {
  width: 100%;
}
.under main .post_item_r {
  padding: 15px;
  box-shadow: 0 0 10px rgba(0, 0, 0, 0.2);
  border-radius: 10px;
  position: relative;
}
.under main .post_item_r .post_img {
  margin-bottom: 0;
}
.under main .post_item_r .post_content {
  padding: 15px 15px 0;
}
.under main .post_item_r .btn a {
  position: initial;
}
.under main .post_item_r .btn a::after {
  content: "";
  position: absolute;
  width: 100%;
  height: 100%;
  left: 0;
  top: 0;
}
.under main .post_item_r .post_img {
  overflow: hidden;
}
.under main .post_item_r .post_img img {
  transition: 0.3s;
}
.under main .post_item_r:hover .post_img img {
  transform: scale(1.1);
}

.under main .post_list_shades {
  grid-template-columns: repeat(1, 1fr);
  grid-gap: 30px;
  max-width: 800px;
}
.under main .post_img02 {
  height: 440px;
}
.under main .post_list_shades li a {
  background: #fff;
  border-bottom: 1px dashed var(--txt);
  border-radius: 0;
  padding-bottom: 30px;
}

.under main .post_item_r .post_des {
  font-size: 16px;
  max-height: 48px;
}
.under main .post_item_r .post_img {
  height: 204px;
}

/* ===== Tu-hoc archive (2 cột + featured) ===== */
.under main .tu-hoc-archive .sec_list_cate {
  margin-bottom: 24px;
}
.under main .tu-hoc-archive__featured-wrap {
  margin-bottom: 30px;
  padding-bottom: 0;
}
.under main .tu-hoc-archive__mid-banner-wrap {
  margin-bottom: 30px;
  padding-bottom: 0;
}
.under main .tu-hoc-archive__mid-banner,
.under main .tu-hoc-archive__mid-banner-link,
.under main .tu-hoc-archive__mid-banner-img {
  display: block;
  width: 100%;
}
.under main .tu-hoc-archive__mid-banner-link,
.under main .tu-hoc-archive__mid-banner-img {
  border-radius: 10px;
  overflow: hidden;
  line-height: 0;
}
.under main .tu-hoc-archive__mid-banner img {
  width: 100%;
  height: auto;
  display: block;
  border-radius: 10px;
  transition: 0.3s;
}
.under main .tu-hoc-archive__mid-banner-link:hover img {
  opacity: 0.92;
}
.under main .tu-hoc-archive__featured-link {
  display: block;
  border-radius: 10px;
  overflow: hidden;
  background: var(--l_purple);
  transition: 0.3s;
}
.under main .tu-hoc-archive__featured-link:hover {
  box-shadow: 0 8px 24px rgba(0, 0, 0, 0.12);
}
.under main .tu-hoc-archive__featured-img {
  height: auto;
  min-height: 280px;
  /* max-height: 420px; */
  margin-bottom: 0;
  border-radius: 0;
}
.under main .tu-hoc-archive__featured-img img {
  border-radius: 0;
}
.under main .tu-hoc-archive__featured-body {
  padding: 18px 20px 22px;
}
.under main .tu-hoc-archive__featured-body .post_ttl {
  height: auto;
  max-height: none;
  font-size: clamp(20px, 2.2vw, 28px);
  margin-bottom: 8px;
}
.under main .tu-hoc-archive__featured-excerpt {
  max-height: none;
  line-clamp: 3;
  -webkit-line-clamp: 3;
  font-size: 95%;
}
.under main .tu-hoc-archive__grid {
  display: flex;
  flex-direction: column;
  gap: 0;
  max-width: none;
  margin: 0;
  padding-bottom: 0;
}
.under main .tu-hoc-archive__grid .post_item {
  width: 100%;
}
.under main .tu-hoc-archive__grid .post_item a {
  display: flex;
  flex-direction: row;
  align-items: stretch;
  gap: 24px;
  height: auto;
  padding: 22px 18px;
  margin: 0 -18px;
  border-radius: 12px;
  background: #fff;
  border-bottom: none;
  box-shadow: 0 0 0 transparent;
  transition: box-shadow 0.25s ease;
}
.under main .tu-hoc-archive__grid .post_item {
  border-bottom: 1px solid #e8eaef;
}
.under main .tu-hoc-archive__grid .post_item a:hover {
  background: #fff;
  box-shadow: 0 10px 32px rgba(15, 23, 42, 0.12);
}
.under main .tu-hoc-archive__grid .post_content {
  flex: 1;
  min-width: 0;
  order: 1;
  padding: 0;
  display: flex;
  flex-direction: column;
  justify-content: center;
}
.under main .tu-hoc-archive__grid .post_img {
  flex: 0 0 220px;
  width: 220px;
  max-width: 32%;
  height: auto;
  min-height: 0;
  margin-bottom: 0;
  border-radius: 8px;
  overflow: hidden;
  order: 2;
  align-self: center;
}
.under main .tu-hoc-archive__grid .post_img img {
  width: 100%;
  height: 124px;
  max-height: 124px;
  object-fit: cover;
  border-radius: 8px;
}
.under main .tu-hoc-archive__grid .post_ttl {
  height: auto;
  max-height: none;
  margin-bottom: 10px;
  font-size: clamp(17px, 1.6vw, 22px);
  line-height: 1.35;
  font-weight: 800;
  color: #111;
  -webkit-line-clamp: 2;
}
.under main .tu-hoc-archive__grid .post_des {
  max-height: none;
  margin-bottom: 0;
  font-size: 14px;
  line-height: 1.55;
  color: #5f6577;
  -webkit-line-clamp: 2;
}
.under main .tu-hoc-archive__grid .post_date {
  margin-top: 14px;
  font-size: 12px;
  line-height: 1.4;
  letter-spacing: 0.04em;
  text-transform: uppercase;
  color: #9aa0ad;
}
.under main .tu-hoc-archive__grid-wrap {
  margin-bottom: 24px;
}
.under main .tu-hoc-archive__empty {
  padding: 24px 0;
  text-align: center;
  color: #666;
}
.under main .sec_r__tuhoc {
  position: relative;
  top: 0;
}
.under main .tu-hoc-sidebar-banner {
  padding: 0;
  overflow: hidden;
}
.under main .tu-hoc-sidebar-banner__link {
  display: block;
  position: relative;
}
.under main .tu-hoc-sidebar-banner__link::after {
  content: "";
  position: absolute;
  inset: 0;
}
.under main .tu-hoc-sidebar-banner__img {
  height: auto;
  margin-bottom: 0;
  border-radius: 10px;
  overflow: hidden;
}
.under main .tu-hoc-sidebar-banner__img img {
  width: 100%;
  height: auto;
  display: block;
  border-radius: 10px;
  transition: 0.3s;
}
.under main .tu-hoc-sidebar-banner:hover .tu-hoc-sidebar-banner__img img {
  transform: scale(1.03);
}

.under main .tu-hoc-roadmap {
  margin-top: 0;
}
.under main .tu-hoc-roadmap__title {
  margin: 0 0 16px;
  font-size: 18px;
  font-weight: 900;
  line-height: 1.35;
  text-align: center;
  text-transform: uppercase;
  font-family: var(--font-avo-bold);
  color: var(--pcolor);
}
.under main .lo-trinh-list--sidebar {
  display: flex;
  flex-direction: column;
  gap: 20px;
  margin: 0;
  padding: 0;
  list-style: none;
}
.under main .lo-trinh-list--sidebar .item_3fr {
  width: 100%;
  margin: 0;
  border-radius: 20px;
}
.under main .lo-trinh-list--sidebar .item_lo-trinh {
  padding-bottom: 72px;
}
.under main .lo-trinh-list--sidebar .item_lo-trinh:hover {
  transform: none;
  box-shadow: none;
}
.under main .lo-trinh-list--sidebar .item_lo-trinh .btn {
  bottom: 16px;
}
.under main .lo-trinh-list--sidebar .item_img img {
  width: 100%;
  height: auto;
  display: block;
}

/* TOEIC study time — trắc nghiệm trước khi tính giờ */
.under main .toeic-tool {
  max-width: 920px;
  margin: 0 auto 32px;
  padding: 28px 24px 32px;
  border-radius: 20px;
}
.under main .toeic-tool__header {
  margin-bottom: 24px;
}
.under main .toeic-tool__badge {
  display: inline-block;
  margin-bottom: 14px;
  padding: 6px 14px;
  border-radius: 999px;
  background: var(--l_purple);
  color: var(--purple);
  font-size: 12px;
  font-weight: 700;
  letter-spacing: 0.04em;
  text-transform: uppercase;
}
.under main .toeic-tool__title {
  margin: 0 0 12px;
  font-size: clamp(28px, 4vw, 40px);
  font-weight: 900;
  line-height: 1.2;
  color: var(--dark-blue);
  font-family: var(--font-avo-bold);
}
.under main .toeic-tool__lead {
  margin: 0;
  font-size: 16px;
  line-height: 1.65;
  color: #4b5563;
}
.under main .toeic-tool__note-label {
  font-weight: 700;
  color: var(--orange);
}
.under main .toeic-tool__card {
  padding: 28px 28px 24px;
  background: #fff;
  border: 2px solid var(--dark-blue);
  border-radius: 18px;
}
.under main .toeic-tool__card-title {
  margin: 0 0 8px;
  font-size: 22px;
  font-weight: 900;
  line-height: 1.3;
  color: var(--dark-blue);
  font-family: var(--font-avo-bold);
}
.under main .toeic-tool__card-desc {
  margin: 0 0 22px;
  font-size: 15px;
  line-height: 1.55;
  color: #6b7280;
}
.under main .toeic-tool__form .form-row {
  gap: 18px;
  margin-bottom: 18px;
}
.under main .toeic-tool__field {
  flex: 1;
  min-width: 0;
}
.under main .toeic-tool__label {
  display: block;
  margin-bottom: 8px;
  font-size: 15px;
  font-weight: 700;
  line-height: 1.4;
  color: var(--dark-blue);
}
.under main .toeic-tool__label-note {
  font-weight: 500;
  color: #6b7280;
}
.under main .toeic-tool__result--score {
  display: none;
}
.under main .toeic-tool__result--score.is-visible {
  display: block;
}
.under main .toeic-tool__input.f-control {
  height: 48px;
  border: 2px solid var(--dark-blue);
  border-radius: 10px;
  padding: 0 14px;
  font-size: 15px;
  color: var(--dark-blue);
  background: #fff;
  transition: border-color 0.2s ease, box-shadow 0.2s ease;
}
.under main .toeic-tool__input.f-control:focus {
  outline: none;
  border-color: var(--purple);
  box-shadow: 0 0 0 3px rgba(147, 163, 250, 0.25);
}
.under main .toeic-tool__input.f-control::placeholder {
  color: #9ca3af;
}
.under main .toeic-tool__actions {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  gap: 12px;
  margin-top: 6px;
}
.under main .toeic-tool__btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 8px;
  min-height: 46px;
  padding: 0 18px;
  border: 2px solid var(--dark-blue);
  border-radius: 10px;
  font-size: 15px;
  font-weight: 700;
  line-height: 1.2;
  text-decoration: none;
  cursor: pointer;
  transition: background 0.2s ease, color 0.2s ease, transform 0.2s ease;
}
.under main .toeic-tool__btn--primary {
  width: auto;
  background: var(--yellow);
  color: var(--dark-blue);
}
.under main .toeic-tool__btn--primary:hover {
  background: #f5be1a;
  color: var(--dark-blue);
}
.under main .toeic-tool__btn--secondary {
  background: #fff;
  color: var(--dark-blue);
}
.under main .toeic-tool__btn--secondary:hover {
  background: var(--l_purple);
  color: var(--dark-blue);
  text-decoration: none;
}
.under main .toeic-tool__btn-icon {
  font-size: 16px;
  line-height: 1;
}
.under main .toeic-tool__btn-arrow {
  font-size: 18px;
  line-height: 1;
}
.under main .toeic-tool__footnote {
  display: block;
  align-items: flex-start;
  gap: 8px;
  margin: 18px 0 0;
  font-size: 14px;
  line-height: 1.55;
  color: #6b7280;
}
.under main .toeic-tool__footnote-icon {
  flex-shrink: 0;
  line-height: 1.4;
}
.under main .toeic-tool__result {
  margin-top: 22px;
  padding: 18px 20px;
  border: 2px dashed var(--purple);
  border-radius: 12px;
  background: var(--l_purple);
}
.under main .toeic-tool__result p {
  margin: 0 0 8px;
  font-size: 16px;
  line-height: 1.5;
  color: var(--dark-blue);
}
.under main .toeic-tool__result p:last-child {
  margin-bottom: 0;
}
.under main .study-time-result {
  margin-top: 24px;
  padding: 28px 24px 26px;
  border: 0;
  border-radius: 18px;
  background: #fff;
  box-shadow: 0 14px 40px rgba(11, 7, 51, 0.12);
  text-align: center;
}
.under main .study-time-result[hidden],
.under main .study-time-result--pending {
  display: none !important;
}
.under main .study-time-result__eyebrow {
  margin: 0 0 10px;
  font-size: 13px;
  font-weight: 700;
  letter-spacing: 0.06em;
  text-transform: uppercase;
  color: var(--dark-blue);
}
.under main .study-time-result__total {
  margin: 0 0 16px;
  line-height: 1;
  color: var(--purple);
}
.under main .study-time-result__total-value {
  display: inline-block;
  font-size: clamp(52px, 8vw, 72px);
  font-weight: 900;
  font-family: var(--font-avo-bold);
  letter-spacing: -0.03em;
  color: var(--purple);
  line-height: 1;
}
.under main .study-time-result__total-unit {
  display: inline-block;
  margin-left: 8px;
  font-size: 22px;
  font-weight: 700;
  color: var(--dark-blue);
  vertical-align: 0.35em;
}
.under main .study-time-result__breakdown {
  display: flex;
  flex-wrap: wrap;
  justify-content: center;
  gap: 10px 28px;
  margin: 0 0 16px;
  color: var(--dark-blue);
  font-size: 16px;
  line-height: 1.4;
}
.under main .study-time-result__item strong {
  font-weight: 800;
  color: var(--dark-blue);
}
.under main .study-time-result__note {
  margin: 0;
  font-size: 14px;
  line-height: 1.55;
  color: var(--dark-blue);
  opacity: 0.78;
}
.under main .study-time-result__note strong {
  font-weight: 800;
  color: var(--dark-blue);
  opacity: 1;
}
.under main .study-roadmap {
  margin-top: 24px;
  border-radius: 18px;
  background: #fff;
  box-shadow: 0 14px 40px rgba(11, 7, 51, 0.12);
  overflow: hidden;
}
.under main .study-roadmap[hidden],
.under main .study-roadmap--pending {
  display: none !important;
}
.under main .study-roadmap__banner {
  padding: 14px 20px;
  background: var(--l_purple);
  color: var(--dark-blue);
  font-size: 18px;
  font-weight: 800;
  font-family: var(--font-avo-bold);
  text-align: center;
  line-height: 1.35;
}
.under main .study-roadmap__body {
  padding: 22px 22px 24px;
}
.under main .study-roadmap__summary {
  margin: 0 0 10px;
  font-size: 14px;
  line-height: 1.5;
  color: var(--dark-blue);
  opacity: 0.72;
  text-align: center;
}
.under main .study-roadmap__headline {
  margin: 0 0 20px;
  font-size: clamp(20px, 3.2vw, 28px);
  font-weight: 900;
  font-family: var(--font-avo-bold);
  line-height: 1.35;
  color: var(--purple);
  text-align: center;
}
.under main .study-roadmap__milestones {
  display: grid;
  grid-template-columns: repeat(5, minmax(0, 1fr));
  gap: 10px;
  margin-bottom: 20px;
}
.under main .study-roadmap__milestone {
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  min-height: 72px;
  padding: 10px 8px;
  border: 2px solid var(--dark-blue);
  border-radius: 12px;
  background: #fff;
  color: var(--dark-blue);
  text-align: center;
}
.under main .study-roadmap__milestone-score {
  font-size: 22px;
  font-weight: 900;
  font-family: var(--font-avo-bold);
  line-height: 1.1;
}
.under main .study-roadmap__milestone-label {
  margin-top: 4px;
  font-size: 12px;
  font-weight: 700;
  line-height: 1.2;
  text-transform: uppercase;
  letter-spacing: 0.02em;
}
.under main .study-roadmap__milestone--needed {
  background: var(--l_purple);
  border-color: var(--purple);
}
.under main .study-roadmap__milestone--target {
  background: var(--orange);
  border-color: var(--orange);
  color: #fff;
}
.under main .study-roadmap__milestone--done {
  background: #f3f4f6;
  border-color: #d1d5db;
  color: #6b7280;
}
.under main .study-roadmap__milestone--beyond {
  background: #fff;
  border-color: #d1d5db;
  color: #9ca3af;
}
.under main .study-roadmap__steps {
  display: flex;
  flex-direction: column;
  gap: 12px;
}
.under main .study-roadmap__step {
  display: flex;
  align-items: flex-start;
  gap: 14px;
  padding: 16px 18px;
  border: 0;
  border-top: 5px solid var(--mcolor);
  border-radius: 14px;
  background: #fff;
  box-shadow: 0 6px 18px rgba(11, 7, 51, 0.06);
}
.under main .study-roadmap__step--target {
  box-shadow: 0 8px 22px rgba(11, 7, 51, 0.12);
}
.under main .study-roadmap__step-index {
  flex-shrink: 0;
  width: 36px;
  height: 36px;
  border-radius: 50%;
  background: var(--yellow);
  color: var(--dark-blue);
  font-size: 16px;
  font-weight: 900;
  display: inline-flex;
  align-items: center;
  justify-content: center;
  line-height: 1;
}
.under main .study-roadmap__step-content {
  min-width: 0;
  flex: 1;
}
.under main .study-roadmap__step-range {
  margin: 0 0 4px;
  font-size: 13px;
  font-weight: 700;
  color: var(--mcolor);
  line-height: 1.3;
}
.under main .study-roadmap__step--green {
  border-top-color: #4f9d86;
}
.under main .study-roadmap__step--green .study-roadmap__step-range {
  color: #4f9d86;
}
.under main .study-roadmap__step--blue {
  border-top-color: var(--l_yellow);
}
.under main .study-roadmap__step--blue .study-roadmap__step-range {
  color: #5b8def;
}
.under main .study-roadmap__step--purple {
  border-top-color: var(--purple);
}
.under main .study-roadmap__step--purple .study-roadmap__step-range {
  color: #6f7fe0;
}
.under main .study-roadmap__step--teal {
  border-top-color: #3db8a7;
}
.under main .study-roadmap__step--teal .study-roadmap__step-range {
  color: #2f9e8f;
}
.under main .study-roadmap__step--orange {
  border-top-color: #f0a06a;
}
.under main .study-roadmap__step--orange .study-roadmap__step-range {
  color: #e88945;
}
.under main .study-roadmap__step--coral {
  border-top-color: var(--orange);
}
.under main .study-roadmap__step--coral .study-roadmap__step-range {
  color: var(--orange);
}
.under main .study-roadmap__step-title {
  margin: 0 0 6px;
  font-size: 18px;
  font-weight: 900;
  font-family: var(--font-avo-bold);
  color: var(--purple);
  line-height: 1.3;
}
.under main .study-roadmap__step-meta {
  margin: 0;
  font-size: 14px;
  line-height: 1.5;
  color: var(--dark-blue);
  opacity: 0.72;
}
.under main .study-roadmap__step-badge {
  display: inline-flex;
  align-items: center;
  margin-top: 10px;
  padding: 5px 12px;
  border-radius: 999px;
  background: var(--yellow);
  color: var(--dark-blue);
  font-size: 13px;
  font-weight: 800;
  line-height: 1.2;
}
.under main .study-roadmap-actions {
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: 10px;
  margin-top: 18px;
}
.under main .study-roadmap-actions[hidden],
.under main .study-roadmap-actions--pending {
  display: none !important;
}
.under main .study-roadmap-actions__button {
  display: flex;
  align-items: center;
  justify-content: center;
  min-height: 54px;
  padding: 12px 18px;
  border-radius: 7px;
  box-shadow: none;
  color: #fff;
  font-size: 15px;
  font-weight: 800;
  line-height: 1.35;
  text-align: center;
  text-decoration: none;
  transition: filter 0.2s ease, transform 0.2s ease;
}
.under main .study-roadmap-actions__button:hover {
  color: #fff;
  text-decoration: none;
  filter: brightness(1.06);
  transform: translateY(-1px);
}
.under main .study-roadmap-actions__button--courses {
  background: var(--dark-blue);
}
.under main .study-roadmap-actions__button--foundation {
  background: var(--mcolor);
}
.under main .study-roadmap-actions__button--consultation {
  grid-column: 1 / -1;
  background: var(--orange);
}
@media (max-width: 768px) {
  .under main .toeic-tool {
    padding: 20px 16px 24px;
    border-radius: 16px;
  }
  .under main .toeic-tool__card {
    padding: 20px 18px 18px;
    border-radius: 14px;
  }
  .under main .toeic-tool__form .form-row {
    flex-direction: column;
    gap: 14px;
    margin-bottom: 14px;
  }
  .under main .toeic-tool__actions {
    flex-direction: column;
    align-items: stretch;
  }
  .under main .toeic-tool__btn {
    width: 100%;
  }
  .under main .study-time-result {
    margin-top: 18px;
    padding: 22px 16px 20px;
    border-radius: 14px;
  }
  .under main .study-time-result__breakdown {
    flex-direction: column;
    gap: 6px;
  }
  .under main .study-roadmap {
    margin-top: 18px;
    border-radius: 14px;
  }
  .under main .study-roadmap__banner {
    font-size: 16px;
    padding: 12px 14px;
  }
  .under main .study-roadmap__body {
    padding: 16px 14px 18px;
  }
  .under main .study-roadmap__milestones {
    grid-template-columns: repeat(2, minmax(0, 1fr));
    gap: 8px;
  }
  .under main .study-roadmap__milestone:last-child {
    grid-column: 1 / -1;
  }
  .under main .study-roadmap__step {
    padding: 14px;
    gap: 12px;
  }
  .under main .study-roadmap__step-title {
    font-size: 16px;
  }
  .under main .study-roadmap-actions {
    grid-template-columns: 1fr;
    margin-top: 14px;
  }
  .under main .study-roadmap-actions__button--consultation {
    grid-column: auto;
  }
}
.under main .btn_q-quiz {
  display: block;
  width: 100%;
  max-width: 250px;
  min-height: 40px;
  padding: 1px 14px 0;
  border-radius: 5px;
  border: 2px solid transparent;
  font-size: var(--mfont-size);
  font-weight: 700;
  line-height: 1.25;
  text-align: center;
  cursor: pointer;
  transition: background 0.2s ease, color 0.2s ease, border-color 0.2s ease;
}
.under main .btn_q-quiz--primary {
  background: #fff;
  border-color: var(--purple);
  color: var(--purple);
}
.under main .btn_q-quiz--primary:hover {
  background: var(--purple);
  border-color: var(--purple);
  color: #fff;
}
.under main .btn_q-quiz--reset {
  background: #9ca3af;
  border-color: #9ca3af;
  color: #fff;
}
.under main .btn_q-quiz--reset:hover {
  background: var(--dark-blue);
  border-color: var(--dark-blue);
  color: #fff;
}
body.toeic-q-quiz-modal-open {
  overflow: hidden;
}
.toeic-q-quiz-modal[hidden] {
  display: none !important;
}
.toeic-q-quiz-modal {
  position: fixed;
  inset: 0;
  z-index: 10050;
  display: flex;
  align-items: center;
  justify-content: center;
  padding: 20px;
}
.toeic-q-quiz-modal__overlay {
  position: absolute;
  inset: 0;
  background: rgba(0, 0, 0, 0.55);
}
.toeic-q-quiz-modal__dialog {
  position: relative;
  width: min(720px, 100%);
  max-height: min(90vh, 760px);
  overflow: auto;
  background: #fff;
  border-radius: 16px;
  padding: 24px 24px 20px;
  box-shadow: 0 18px 48px rgba(0, 0, 0, 0.22);
}
.toeic-q-quiz-modal__close {
  position: absolute;
  top: 10px;
  right: 12px;
  border: 0;
  background: transparent;
  font-size: 28px;
  line-height: 1;
  cursor: pointer;
  color: #666;
}
.toeic-q-quiz-modal__title {
  margin: 0 32px 8px 0;
  font-size: 20px;
  font-weight: 900;
  color: var(--pcolor, #c0392b);
  font-family: var(--font-avo-bold);
}
.toeic-q-quiz-modal__legend,
.toeic-q-quiz-modal__progress {
  margin: 0 0 12px;
  font-size: 13px;
  color: #666;
}
.toeic-q-quiz-modal__question {
  margin: 0 0 14px;
  font-size: 16px;
  font-weight: 700;
  line-height: 1.5;
}
.toeic-q-quiz-modal__options {
  margin: 0;
  padding: 0;
  list-style: none;
}
.toeic-q-quiz-modal__option {
  display: flex;
  gap: 10px;
  align-items: flex-start;
  margin-bottom: 10px;
  padding: 12px 14px;
  border: 1px solid #e5e7eb;
  border-radius: 10px;
  cursor: pointer;
  transition: border-color 0.2s ease, background 0.2s ease;
}
.toeic-q-quiz-modal__option:hover {
  border-color: #d1d5db;
  background: #fafafa;
}
.toeic-q-quiz-modal__option input {
  margin-top: 4px;
  flex-shrink: 0;
}
.toeic-q-quiz-modal__option:has(input:checked) {
  border-color: var(--purple);
  background: var(--l_purple);
}
.toeic-q-quiz-modal__option-key {
  font-weight: 700;
  flex-shrink: 0;
}
.toeic-q-quiz-modal__option-text {
  line-height: 1.45;
}
.toeic-q-quiz-modal__actions {
  display: flex;
  justify-content: space-between;
  gap: 12px;
  margin-top: 18px;
}
.toeic-q-quiz-modal__actions .btn_q-quiz {
  width: auto;
  min-width: 120px;
  flex: 1;
  background-color: var(--l_purple);
  border: 0;
  height: 40px;
  font-family: var(--font-main);
  font-weight: 500;
  padding-top: 4px;
}

.toeic-q-quiz-modal__actions .btn_q-quiz:hover {
  background-color: var(--purple);
  color: #fff;
}
.toeic-q-quiz-modal__actions .btn_q-quiz:disabled {
  opacity: 0.45;
  cursor: not-allowed;
}
.toeic-q-quiz-modal__actions .btn_q-quiz:disabled:hover {
  background: #9ca3af;
  border-color: #9ca3af;
  color: #fff;
}

/*POST DETAIL*/
.under main .sec_shadow {
  box-shadow: 0 0 10px rgba(0, 0, 0, 0.2);
  padding: 15px;
  border-radius: 10px;
}
.under main .post_ct_ttl01 {
  font-size: var(--mfont-size);
  font-weight: 700;
  color: var(--mcolor);
}
.under main .post_ct_ttl01 .big {
  font-size: 120%;
}
.under main .post_detail_content .aligncenter {
  display: flex;
  margin-left: auto;
  margin-right: auto;
}
.under main .post_detail_content .alignright {
  display: flex;
  margin-left: auto;
  margin-right: 0;
}
.under main .list_anchor_single {
  display: flex;
  justify-content: space-between;
  align-items: center;
  flex-wrap: wrap;
  margin-top: 30px;
}
.under main .list_anchor_single li {
  margin: 0;
}
.under main .btn_single a {
  text-decoration: underline;
  position: relative;
  display: inline-block;
  padding-right: 15px;
}
.under main .btn_single a:hover {
  color: var(--purple);
}
.under main .btn_single a.prev_ic {
  padding-left: 15px;
  padding-right: 0;
}
.under main .btn_single a::before {
  content: "";
  position: absolute;
  width: 8px;
  height: 8px;
  border-top: 2px solid CurrentColor;
  border-right: 2px solid CurrentColor;
  transform: rotate(45deg);
  top: calc(50% - 4px);
  right: 0;
}
.under main .btn_single a.prev_ic::before {
  border-left: 2px solid CurrentColor;
  border-right: none;
  transform: rotate(-45deg);
  left: 0;
  right: initial;
}
.under main .section_container_shades {
  width: 100%;
  max-width: 800px;
  margin: 0 auto;
}
.under main .post_detail_content {
  text-align: justify;
}
.under main .post_detail_content p{line-height: 1.6; }
.under main .post_detail_content p.has-nbsp {
  line-height: 1em;
}

.under main .post_detail_content iframe{width: 100%; aspect-ratio: 16/9;height: auto;}

/*Tính điểm Toeic*/
.tab {
  display: inline-block;
  background: #e4ebf7;
  color: #2f5aa8;
  padding: 10px 20px;
  border-radius: 20px;
  font-weight: 500;
  margin-bottom: 25px;
}
.form-row {
  display: flex;
  gap: 20px;
  margin-bottom: 20px;
}
.form-group {
  flex: 1;
}
label {
  display: block;
  margin-bottom: 8px;
  font-weight: 500;
}
div#ez-toc-container .ez-toc-title{
    font-weight: 700;
    font-size: 19px;
}

/*input {width: 100%; padding: 12px; border-radius: 6px; border: 1px solid #ccc; font-size: 14px; }*/
/*input:focus {outline: none; border-color: #3b5bcc; }*/
@media (max-width: 768px) {
  .form-row {
    flex-direction: column;
  }
}

.course-pos {
  position: absolute;
  top: 120px;
  right: 20px;
  transition: 0.3s;
}
.course-pos.show {
  position: fixed;
}
/* Sidebar course card (CPT course_box) */
.course-box--card {
  max-width: 380px;
  margin: 0 auto;
  background: #fff;
  border-radius: 16px;
  overflow: hidden;
  box-shadow: 0 8px 28px rgba(15, 35, 52, 0.12);
  border: 1px solid rgba(0, 0, 0, 0.06);
}

.course-box__visual {
  background: #e8eef5;
  aspect-ratio: 16 / 10;
  display: flex;
  align-items: center;
  justify-content: center;
  overflow: hidden;
}

.course-box__img {
  width: 100%;
  height: 100%;
  object-fit: cover;
  display: block;
}

.course-box__bar {
  display: flex;
  justify-content: space-between;
  align-items: center;
  gap: 12px;
  padding: 16px 18px;
  background: #fff;
}

.course-box__prices {
  display: flex;
  flex-wrap: wrap;
  align-items: baseline;
  gap: 8px 12px;
  min-width: 0;
}

.course-box__price-old {
  font-size: 15px;
  color: #999;
  text-decoration: line-through;
  line-height: 1.3;
}

.course-box__price-sale {
  font-size: 20px;
  font-weight: 700;
  color: #e74c3c;
  line-height: 1.2;
}

.course-box__cta {
  flex-shrink: 0;
  display: inline-block;
  padding: 12px 22px;
  border-radius: 999px;
  background: #ff782d;
  color: #fff !important;
  font-weight: 700;
  font-size: 14px;
  text-decoration: none;
  text-align: center;
  transition: background 0.2s ease, transform 0.15s ease;
}

.course-box__cta:hover {
  background: #f56a1a;
  color: #fff !important;
}

@media (max-width: 480px) {
  .course-box__bar {
    flex-direction: column;
    align-items: stretch;
  }

  .course-box__cta {
    text-align: center;
  }
}

/* RESET */
.under main .post_detail_content ul:last-child,
.under main table:last-child,
.under main .list_faq:last-child,
.under main .list_faq dl:last-child,
.under main .list01:last-child,
.under main .list01 li:last-child,
.under main .list02:last-child,
.under main .list02 li:last-child,
.under main .list_check:last-child,
.under main .list_check li:last-child,
.under main .list_step:last-child,
.under main .list_step dl:last-child,
.under main section p:last-child,
.under main p:last-child,
.under main .frame01:last-child,
.under main .frame02:last-child,
.under main .frame_pick:last-child {
  margin-bottom: 0;
}

/* EGDE */
@supports (-ms-ime-align: auto) {
}

/* FIREFOX */
@-moz-document url-prefix() {
}

/* Safari 10.1+ (which is the latest version of Safari at this time) */
@media not all and (min-resolution: 0.001dpcm) {
}

/*==========================================================
                    E X E R C I S E   D E M O
==========================================================*/
.under main .exercise-header {
  text-align: center;
  max-width: 900px;
  margin: 0 auto;
}
.under main .exercise-intro {
  max-width: 760px;
  margin: 15px auto 0;
}
.under main .exercise-taxonomy-bar {
  justify-content: center;
}
.under main .exercise-grid {
  display: grid;
  grid-template-columns: repeat(4, minmax(0, 1fr));
  gap: 24px;
}
.under main .exercise-card,
.under main .exercise-set-card {
  background: #fff;
  border: 1px solid #e7e8ef;
  border-radius: 14px;
  box-shadow: 0 6px 18px rgba(15, 23, 42, 0.08);
}
.under main .exercise-card {
  display: flex;
  flex-direction: column;
  justify-content: space-between;
  min-height: 200px;
  transition:
    transform 0.2s ease,
    box-shadow 0.2s ease,
    border-color 0.2s ease;
}
.under main .exercise-card:hover {
  transform: translateY(-4px);
  border-color: #d9dbe8;
  box-shadow: 0 12px 28px rgba(15, 23, 42, 0.12);
}
.under main .exercise-card__body,
.under main .exercise-section-card,
.under main .exercise-set-card {
  padding: 20px 18px 0;
}
.under main .exercise-card__meta,
.under main .exercise-set-card__count {
  display: block;
  font-size: 14px;
  color: #666;
  line-height: 1.5;
}
.under main .exercise-card__title,
.under main .exercise-set-card h4 {
  text-align: left;
  margin: 0 0 16px;
  font-size: 16px;
  font-weight: 800;
  line-height: 1.45;
  text-transform: uppercase;
}
.under main .exercise-card__title a {
  color: var(--dark-blue);
  display: -webkit-box;
  overflow: hidden;
  line-clamp: 2;
  -webkit-line-clamp: 2;
  -webkit-box-orient: vertical;
}
.under main .exercise-card__stats {
  display: flex;
  flex-wrap: wrap;
  gap: 8px 16px;
  margin-bottom: 14px;
}
.under main .exercise-card__stat {
  display: inline-flex;
  align-items: center;
  min-height: 16px;
  font-size: 13px;
  line-height: 1.4;
  color: #8b8e9d;
}
.under main .exercise-card__stat--views {
  position: relative;
  padding-left: 22px;
}
.under main .exercise-card__stat--views::before {
  content: "";
  position: absolute;
  left: 0;
  top: 50%;
  width: 16px;
  height: 16px;
  transform: translateY(-50%);
  background-image: url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' width='16' height='16' viewBox='0 0 16 16' fill='none'%3E%3Cpath d='M1.6 8C3.1 5.5 5.3 4.2 8 4.2S12.9 5.5 14.4 8C12.9 10.5 10.7 11.8 8 11.8S3.1 10.5 1.6 8Z' stroke='%23a4a8b8' stroke-width='1.3' stroke-linejoin='round'/%3E%3Ccircle cx='8' cy='8' r='2.1' stroke='%23a4a8b8' stroke-width='1.3'/%3E%3C/svg%3E");
  background-position: center;
  background-repeat: no-repeat;
  background-size: 16px 16px;
  opacity: 0.9;
}
.under main .exercise-card__tags {
  display: flex;
  flex-wrap: wrap;
  gap: 8px;
}
.under main .exercise-card__tag {
  display: inline-flex;
  align-items: center;
  min-height: 28px;
  padding: 5px 11px;
  border: 1px solid var(--l_purple);
  border-radius: 7px;
  background: var(--l_purple);
  color: #000;
  font-size: 14px;
  font-weight: 700;
  line-height: 1.2;
  text-transform: uppercase;
}
.under main .exercise-card__footer {
  padding: 20px 18px 18px;
  margin-top: auto;
}
.under main .exercise-card__link {
  display: flex;
  align-items: center;
  justify-content: center;
  width: 100%;
  min-height: 42px;
  padding: 10px 16px;
  border-radius: 8px;
  border: 1px solid var(--purple);
  background: #fff;
  color: var(--purple);
  font-weight: 700;
  text-align: center;
  transition: background 0.2s ease, color 0.2s ease, border-color 0.2s ease;
  font-size: 14px;
}
.under main .exercise-card__link:hover {
  background: var(--purple);
  color: #fff;
  border-color: var(--purple);
}
.under main .exercise-empty {
  padding: 24px;
  border-radius: 16px;
  border: 2px dashed #bbb;
  background: #fafafa;
  text-align: center;
}
.under main .exercise-pagination {
  margin-top: 34px;
}
.under main .exercise-pagination ul {
  display: flex;
  justify-content: center;
  flex-wrap: wrap;
  gap: 8px;
  padding: 0;
  margin: 0;
}
.under main .exercise-pagination li {
  list-style: none;
}
.under main .exercise-pagination a,
.under main .exercise-pagination span {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  width: 38px;
  height: 38px;
  padding: 0;
  border: 1px solid #e2e5ef;
  border-radius: 999px;
  background: #fff;
  color: #787c8b;
  font-weight: 700;
  text-align: center;
}
.under main .exercise-pagination a:hover,
.under main .exercise-pagination .current {
  border-color: var(--purple);
  background: var(--purple);
  color: #fff;
}
.under main .exercise-pagination .prev,
.under main .exercise-pagination .next {
  font-size: var(--mfont-size);
  line-height: 1;
}
.under main .exercise-single {
  padding-bottom: 20px;
}
.under main .exercise-single__main {
  max-width: 960px;
  margin: 0 auto;
}
.under main .exercise-single__hero {
  padding: 28px;
  margin-bottom: 30px;
  border-radius: 20px;
  background: #f8f8ff;
  border: 2px solid #333;
}
.under main .exercise-pill-list {
  display: flex;
  flex-wrap: wrap;
  gap: 10px;
  margin-bottom: 0px;
}
.under main .exercise-pill {
  display: inline-flex;
  align-items: center;
  padding: 6px 12px;
  border-radius: 999px;
  background: #ece9ff;
  font-size: 14px;
  font-weight: 700;
}
.under main .exercise-section-card h3 {
  text-align: left;
  margin-bottom: 16px;
}
.under main .exercise-set-list {
  display: grid;
  gap: 16px;
}
.under main .exercise-audio-player {
  margin-bottom: 13px;
}
.under main .exercise-audio-player audio {
  width: 100%;
}
.under main .exercise-set-card__head {
  display: flex;
  align-items: flex-start;
  justify-content: space-between;
  gap: 16px;
  margin-bottom: 10px;
}
.under main .exercise-set-card__content {
  margin-bottom: 16px;
}
.under main .exercise-question-preview {
  margin-top: 12px;
  padding-left: 20px;
}
.under main .exercise-question-preview li {
  margin-bottom: 8px;
}
.under main .exercise-question-preview__item {
  margin-bottom: 18px;
}
.under main .exercise-question-preview__title {
  font-weight: 700;
  margin-bottom: 8px;
}
.under main .exercise-question-preview__content {
  margin-bottom: 10px;
}
.under main .exercise-answer-list {
  display: grid;
  gap: 8px;
  padding-left: 0;
  margin: 0;
}
.under main .exercise-answer-list__label {
  min-width: 22px;
  font-weight: 700;
}
.under main .exercise-answer-option {
  display: flex;
  align-items: flex-start;
  gap: 10px;
  padding: 12px 14px;
  border-radius: 12px;
  background: #f7f7fb;
  border: 1px solid #e3e3ee;
  cursor: pointer;
  transition: 0.2s ease;
}
.under main .exercise-answer-option input {
  appearance: none;
  -webkit-appearance: none;
  flex-shrink: 0;
  width: 18px;
  height: 18px;
  margin: 7px 0 0;
  border: 2px solid #8f8fa8;
  border-radius: 50%;
  background: #fff;
  display: inline-flex;
  align-items: center;
  justify-content: center;
  cursor: pointer;
  position: relative;
  transition:
    border-color 0.2s ease,
    background-color 0.2s ease,
    transform 0.15s ease;
}
.under main .exercise-answer-option input::before {
  content: "";
  width: 7px;
  height: 7px;
  border-radius: 50%;
  background: #fff;
  transform: scale(0);
  transition: transform 0.15s ease;
  position: absolute;
  top: 5px;
  left: 5px;
}
.under main .exercise-answer-option input:checked {
  border-color: var(--purple);
  background: var(--purple);
}
.under main .exercise-answer-option input:checked::before {
  transform: scale(1);
}
.under main .exercise-answer-option input:focus-visible {
  outline: none;
  box-shadow: 0 0 0 3px rgba(147, 163, 250, 0.25);
}
.under main .exercise-answer-option:hover input {
  border-color: var(--purple);
}
.under main .exercise-answer-option.is-correct-answer input {
  border-color: #51b36c;
  background: #51b36c;
}
.under main .exercise-answer-option.is-user-wrong input {
  border-color: #e65d5d;
  background: #e65d5d;
}
.under main .exercise-answer-option.is-selected {
  border-color: var(--purple);
}
.under main .exercise-answer-option.is-correct-answer {
  background: #e8f8ee;
  border-color: #51b36c;
}
.under main .exercise-answer-option.is-user-wrong {
  background: #fff0f0;
  border-color: #e65d5d;
}
.under main .exercise-fill-blanks {
  line-height: 1.65;
}
.under main .exercise-fill-blanks .exercise-gap {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  margin: 0 4px;
  vertical-align: middle;
}
.under main .exercise-fill-blanks .exercise-gap__num {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  min-width: 28px;
  height: 28px;
  padding: 0 6px;
  border: 1px solid #d8deef;
  border-radius: 6px;
  background: #fff;
  font-size: 13px;
  font-weight: 700;
  color: var(--dark-blue);
}
.under main .exercise-fill-blanks .exercise-gap__input {
  min-width: 120px;
  max-width: 220px;
  height: 34px;
  padding: 6px 10px;
  border: 1px solid #d8deef;
  border-radius: 8px;
  font-size: var(--mfont-size);
  box-sizing: border-box;
}
.under main .exercise-fill-blanks .exercise-gap__input:focus {
  outline: 2px solid rgba(76, 92, 184, 0.35);
  border-color: #4c5cb8;
}
.under main .exercise-fill-blanks .exercise-gap__input.is-gap-correct {
  border-color: #51b36c;
  background: #f4fbf6;
}
.under main .exercise-fill-blanks .exercise-gap__input.is-gap-wrong {
  border-color: #e65d5d;
  background: #fff8f8;
}
.under main .exercise-fill-blanks .exercise-gap__input.is-gap-skipped {
  border-style: dashed;
  background: #fafbff;
}
.under main .exercise-fill-warning {
  margin-top: 10px;
  padding: 10px 12px;
  border-radius: 10px;
  background: #fff8e6;
  border: 1px solid #f0d58a;
  color: #6b5214;
  font-size: 14px;
}
.under main .exercise-fill-warning code {
  font-size: 0.92em;
}
.under main .exercise-question-feedback {
  margin-top: 14px;
  padding: 14px 16px;
  border-radius: 12px;
  background: #f9f9fb;
  border: 1px solid #ececf5;
}
.under main .exercise-question-feedback p{font-size: 15px;}
.under main .exercise-question-feedback>p{margin-bottom: 4px;line-height: 1.5;}
.under main .exercise-question-card.is-correct .exercise-question-feedback {
  background: #eefaf2;
  border-color: #b8e2c6;
}
.under main .exercise-question-card.is-wrong .exercise-question-feedback {
  background: #fff4f4;
  border-color: #f1c2c2;
}
.under main .exercise-question-card.is-skipped .exercise-question-feedback {
  background: #fffbe9;
  border-color: #eedb9d;
}
.under main .exercise-question-card.is-skipped .exercise-answer-option.is-correct-answer {
  background: #e8f8ee;
  border-color: #51b36c;
}
.under main .exercise-question-card.is-skipped .exercise-answer-option.is-correct-answer input {
  border-color: #51b36c;
  background: #51b36c;
}
.under main .exercise-question-feedback__status {
  font-weight: 700;
}
.under main .exercise-question-feedback__label {
  font-weight: 700;
  margin-bottom: 4px;
  line-height: 1.5;
}
.under main .exercise-submit-bar {
  z-index: 5;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 16px;
  margin-top: 24px;
  padding: 16px 20px;
  border-radius: 16px;
  border: 2px solid #333;
  background: #fff;
}
.under main .exercise-submit-bar__meta-line {
  display: flex;
  align-items: center;
  flex-wrap: wrap;
  gap: 10px 18px;
  margin: 0;
}
.under main .exercise-submit-bar__meta-timer {
  display: inline-flex;
  align-items: center;
  gap: 6px;
}
.under main .exercise-submit-bar__meta{padding-top: 6px;}
.exercise-submit-bar.is-hidden-after-submit,
.exercise-quiz-form.is-submitted .exercise-submit-bar,
body.exercise-quiz-submitted .exercise-submit-bar,
body.exercise-quiz-submitted #exercise-focus-toolbar-slot[hidden],
body.exercise-quiz-submitted .exercise-focus-header__toolbar:empty {
  display: none !important;
  visibility: hidden !important;
  height: 0 !important;
  min-height: 0 !important;
  margin: 0 !important;
  padding: 0 !important;
  overflow: hidden !important;
  pointer-events: none !important;
}
body.exercise-quiz-submitted .exercise-focus-header__stats-btn {
  display: inline-flex !important;
  align-items: center;
  justify-content: center;
  min-height: 42px;
  padding: 10px 20px;
  border-radius: 999px;
  border: 2px solid var(--purple, #93a3fa);
  background: var(--purple, #93a3fa);
  color: #fff;
  font-size: 15px;
  font-weight: 700;
  line-height: 1.2;
  text-decoration: none;
  white-space: nowrap;
  box-sizing: border-box;
  transition: background 0.2s ease, border-color 0.2s ease, box-shadow 0.2s ease;
}
body.exercise-quiz-submitted .exercise-focus-header__redo-btn {
  display: inline-flex !important;
  align-items: center;
  justify-content: center;
  min-height: 42px;
  padding: 10px 20px;
  border-radius: 999px;
  border: 2px solid #e65d5d;
  background: #fff1f1;
  color: #c94a4a;
  font-size: 15px;
  font-weight: 700;
  line-height: 1.2;
  text-decoration: none;
  white-space: nowrap;
  box-sizing: border-box;
  transition: background 0.2s ease, border-color 0.2s ease, box-shadow 0.2s ease;
}
body.exercise-quiz-submitted .exercise-focus-header__redo-btn:hover {
  background: #ffe3e3;
  border-color: #d94848;
  color: #b53a3a;
  text-decoration: none;
}
body.exercise-quiz-submitted .exercise-focus-header__stats-btn:hover {
  background: #7b8de8;
  border-color: #7b8de8;
  color: #fff;
  text-decoration: none;
  box-shadow: 0 6px 16px rgba(147, 163, 250, 0.35);
}
.under main .exercise-review-stats-bar {
  display: none;
  justify-content: flex-end;
  gap: 10px;
  flex-wrap: wrap;
  padding: 0 0 14px;
}
body.exercise-quiz-submitted .under main .exercise-review-stats-bar {
  display: flex !important;
}
.under main .exercise-review-redo-btn {
  appearance: none;
  display: inline-flex;
  align-items: center;
  justify-content: center;
  min-height: 44px;
  padding: 10px 22px;
  border-radius: 999px;
  border: 2px solid #e65d5d;
  background: #fff1f1;
  color: #c94a4a;
  font-size: 15px;
  font-weight: 700;
  line-height: 1.2;
  text-decoration: none;
  white-space: nowrap;
  box-sizing: border-box;
  transition: background 0.2s ease, border-color 0.2s ease, box-shadow 0.2s ease;
}
.under main .exercise-review-redo-btn:hover {
  background: #ffe3e3;
  border-color: #d94848;
  color: #b53a3a;
  text-decoration: none;
}
.under main .exercise-review-stats-btn {
  appearance: none;
  display: inline-flex;
  align-items: center;
  justify-content: center;
  min-height: 44px;
  padding: 10px 22px;
  border-radius: 999px;
  border: 2px solid var(--purple, #93a3fa);
  background: var(--purple, #93a3fa);
  color: #fff;
  font-size: 15px;
  font-weight: 700;
  line-height: 1.2;
  text-decoration: none;
  white-space: nowrap;
  box-sizing: border-box;
  transition: background 0.2s ease, border-color 0.2s ease, box-shadow 0.2s ease;
}
.under main .exercise-review-stats-btn:hover {
  background: #7b8de8;
  border-color: #7b8de8;
  color: #fff;
  text-decoration: none;
  box-shadow: 0 6px 16px rgba(147, 163, 250, 0.35);
}
#exercise-focus-toolbar-slot[hidden] {
  display: none !important;
}
.under main .exercise-quiz-timer {
  display: inline-block;
  min-width: 82px;
  font-variant-numeric: tabular-nums;
  letter-spacing: 0.3px;
  font-size: 26px;
  font-weight: 700;
  color: #000;
}
.under main .exercise-submit-button,
.under .exercise-result-modal__actions .exercise-result-modal__action,
.under .exercise-result-modal__actions .exercise-result-modal__secondary {
  appearance: none;
  border: 2px solid #333;
  border-radius: 999px;
  display: inline-flex;
  align-items: center;
  justify-content: center;
  min-height: 48px;
  min-width: 170px;
  max-width: 100%;
  padding: 12px 24px;
  font-weight: 700;
  font-size: 16px;
  line-height: 1.2;
  text-align: center;
  box-sizing: border-box;
  cursor: pointer;
  transition: background 0.2s ease, color 0.2s ease, border-color 0.2s ease, box-shadow 0.2s ease;
}
.under main .exercise-submit-button,
.under .exercise-result-modal__actions .exercise-result-modal__action {
  background: var(--yellow);
  color: var(--dark-blue);
}
.under main .exercise-submit-button[disabled] {
  cursor: default;
  pointer-events: none;
  background-color: var(--dark-blue);
  border-color: var(--dark-blue);
  color: #fff;
}
.under .exercise-result-modal__actions .exercise-result-modal__stats-btn {
  background: #fff;
  color: #333;
  border-color: #333;
  text-decoration: none;
}
.under .exercise-result-modal__actions .exercise-result-modal__stats-btn:hover {
  background: #fff;
  border-color: #333;
  color: #333;
  text-decoration: none;
  box-shadow: 0 10px 20px rgba(15, 23, 42, 0.08);
}
.under .exercise-result-modal__actions .exercise-result-modal__secondary {
  background: var(--purple);
  color: #fff;
  border-color: var(--purple);
}
.under .exercise-result-modal__actions .exercise-result-modal__action:hover,
.under .exercise-result-modal__actions .exercise-result-modal__secondary:hover {
  box-shadow: 0 10px 20px rgba(15, 23, 42, 0.08);
}
.under .exercise-result-modal__actions .exercise-result-modal__secondary:hover {
  background: #7b8de8;
  border-color: #7b8de8;
  color: #fff;
  box-shadow: 0 10px 20px rgba(147, 163, 250, 0.35);
}
.under .exercise-result-modal__actions .exercise-result-modal__action:focus-visible,
.under .exercise-result-modal__actions .exercise-result-modal__secondary:focus-visible {
  outline: 3px solid rgba(60, 156, 95, 0.2);
  outline-offset: 2px;
}
.exercise-modal-open {
  overflow: hidden;
}
.under .exercise-result-modal[hidden] {
  display: none;
}
.under .exercise-result-modal {
  position: fixed;
  inset: 0;
  z-index: 100;
}
.under .exercise-result-modal__backdrop {
  position: absolute;
  inset: 0;
  background: rgba(0, 0, 0, 0.45);
}
.under .exercise-result-modal__dialog {
  position: relative;
  width: calc(100% - 30px);
  max-width: 720px;
  max-height: calc(100vh - 40px);
  overflow: auto;
  margin: 150px auto 20px;
  padding: 28px;
  border-radius: 20px;
  background: #fff;
  border: 2px solid #333;
}
.under .exercise-result-modal__close {
  position: absolute;
  top: 18px;
  right: 18px;
  width: 34px;
  height: 34px;
  border: 1px solid #ddd;
  border-radius: 50%;
  background: #fff;
  cursor: pointer;
}
.under .exercise-result-modal__eyebrow {
  font-weight: 700;
  color: #3c9c5f;
  margin-bottom: 0;
}
.under .exercise-result-modal__stats {
  display: grid;
  grid-template-columns: repeat(4, minmax(0, 1fr));
  gap: 12px;
  margin: 18px 0;
}
.under .exercise-result-stat {
  padding: 16px 12px;
  border-radius: 14px;
  background: #f7f7fb;
  text-align: center;
}
.under .exercise-result-stat__value {
  display: block;
  font-size: 30px;
  font-weight: 700;
  line-height: 1.2;
}
.under .exercise-result-stat__label {
  display: block;
  font-size: 14px;
  color: #666;
}
.under .exercise-result-modal__scoreline {
  margin-bottom: 8px;
}
.under main .exercise-result-modal__score{margin-bottom: 0;}
.under .exercise-result-modal__actions {
  display: flex;
  align-items: center;
  justify-content: center;
  gap: 14px;
  flex-wrap: wrap;
}
@media (max-width: 1200px) {
  .under main .exercise-grid {
    grid-template-columns: repeat(3, minmax(0, 1fr));
  }
}
@media (max-width: 767px) {
  .under main .exercise-grid {
    grid-template-columns: repeat(2, minmax(0, 1fr));
    gap: 18px;
  }
  .under .exercise-result-modal__actions {
    flex-direction: column;
  }
  .under .exercise-result-modal__actions .exercise-result-modal__action,
  .under .exercise-result-modal__actions .exercise-result-modal__secondary {
    width: 100%;
    min-width: 0;
  }
  .under main .exercise-stats__actions {
    flex-direction: column;
    align-items: stretch;
  }
  .under main .exercise-stats__action {
    width: 100%;
    min-width: 0;
  }
}
/* Exercise result statistics page */
.under main .exercise-stats {
  padding: 24px 0 40px;
}
.under main .exercise-stats__title {
  margin: 0 0 8px;
  font-size: 28px;
  font-weight: 900;
  font-family: var(--font-avo-bold);
}
.under main .exercise-stats__subtitle {
  margin: 0 0 8px;
  color: #666;
}
.under main .exercise-stats__actions {
  display: flex;
  align-items: center;
  gap: 14px;
  flex-wrap: wrap;
  margin: 0 0 20px;
}
.under main .exercise-stats__action {
  appearance: none;
  display: inline-flex;
  align-items: center;
  justify-content: center;
  min-width: 160px;
  min-height: 42px;
  padding: 12px 26px;
  border: 2px solid var(--purple, #93a3fa);
  border-radius: 999px;
  font-size: 16px;
  font-weight: 700;
  line-height: 1.2;
  text-align: center;
  text-decoration: none;
  transition: background 0.2s ease, color 0.2s ease, border-color 0.2s ease, box-shadow 0.2s ease, transform 0.15s ease;
}
.under main .exercise-stats__action--primary {
  background: var(--purple, #93a3fa);
  color: #fff;
}
.under main .exercise-stats__action--secondary {
  background: #fff;
  color: #e65d54;
  border-color: #ff6f61;
}
.under main .exercise-stats__action--primary:hover {
  background: var(--dark-blue, #0b0733);
  border-color: var(--dark-blue, #0b0733);
  color: #fff;
}
.under main .exercise-stats__action--secondary:hover {
  background: #fff5f4;
  color: #d14a42;
  border-color: #ff6f61;
}
.under main .exercise-stats__action:hover {
  transform: translateY(-1px);
  box-shadow: 0 8px 18px rgba(15, 23, 42, 0.1);
}
.under main .exercise-stats__empty,
.under main .exercise-stats__loading {
  padding: 20px;
  border-radius: 12px;
  background: #f7f7fb;
  color: #555;
}
.under main .exercise-stats-parts {
  display: grid;
  gap: 14px;
}
.under main .exercise-stats-part {
  border: 1px solid #e5e7eb;
  border-radius: 12px;
  background: #fff;
  overflow: hidden;
}
.under main .exercise-stats-part__summary {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 12px;
  padding: 16px 18px;
  cursor: pointer;
  font-weight: 700;
  list-style: none;
}
.under main .exercise-stats-part__summary .exercise-stats-part__title{font-size: var(--mfont-size);}
.under main .exercise-stats-part__summary::-webkit-details-marker {
  display: none;
}
.under main .exercise-stats-part__score {
  color: var(--pcolor, #c0392b);
  font-weight: 700;
  font-size: 14px;
}
.under main .exercise-stats-part__body {
  padding: 0 18px 18px;
  overflow-x: auto;
}
.under main .exercise-stats-table {
  width: 100%;
  border-collapse: collapse;
  table-layout: fixed;
  min-width: 860px;
}
.under main .exercise-stats-table th,
.under main .exercise-stats-table td {
  padding: 10px 12px;
  border-bottom: 1px solid var(--dark-blue);
  text-align: left;
  vertical-align: middle;
  border-color: transparent;
}
.under main .exercise-stats-table tr th:first-child{border-left-color: transparent;}
.under main .exercise-stats-table tr th:last-child{border-right-color: transparent;}
.under main .exercise-stats-table th{background-color: var(--l_purple);color: var(--dark-blue);}
.under main .exercise-stats-table th:nth-child(1),
.under main .exercise-stats-table td:nth-child(1) {
  width: 26%;
}
.under main .exercise-stats-table th:nth-child(2),
.under main .exercise-stats-table td:nth-child(2),
.under main .exercise-stats-table th:nth-child(3),
.under main .exercise-stats-table td:nth-child(3),
.under main .exercise-stats-table th:nth-child(4),
.under main .exercise-stats-table td:nth-child(4) {
  width: 8%;
  text-align: center;
}
.under main .exercise-stats-table th:nth-child(5),
.under main .exercise-stats-table td:nth-child(5) {
  width: 42%;
}
.under main .exercise-stats-table th {
  font-size: 16px;
  color: var(--dark-blue);
  font-weight: 700;
}
.under main .exercise-stats-table__row--all td.is-correct,
.under main .exercise-stats-table__row--all td.is-wrong,
.under main .exercise-stats-table__row--all td.is-skipped {
  text-align: center;
}
.under main .exercise-stats-table__cell--no-pills {
  padding: 10px 12px;
}
.under main .exercise-stats-table td.is-correct {
  color: #2f9e44;
  font-weight: 700;
}
.under main .exercise-stats-table td.is-wrong {
  color: #e03131;
  font-weight: 700;
}
.under main .exercise-stats-table td.is-skipped {
  color: #666;
  font-weight: 700;
}
.under main .exercise-stats-pills {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  gap: 6px;
  width: 100%;
  max-width: 100%;
  padding-bottom: 2px;
}
.under main .exercise-stats-pill {
  display: inline-flex;
  flex: 0 0 auto;
  align-items: center;
  justify-content: center;
  min-width: 28px;
  height: 28px;
  padding: 0 8px;
  border-radius: 6px;
  font-size: 14px;
  font-weight: 700;
  white-space: nowrap;
  background: #f1f3f5;
  color: #495057;
}
.under main .exercise-stats-pill.is-correct {
  background: #d3f9d8;
  color: #2b8a3e;
}
.under main .exercise-stats-pill.is-wrong {
  background: #ffe3e3;
  color: #c92a2a;
}
.under main .exercise-stats-pill.is-skipped {
  background: #f1f3f5;
  color: #868e96;
}
.under main button.exercise-stats-pill {
  appearance: none;
  border: 0;
  cursor: pointer;
  font: inherit;
  transition: transform 0.15s ease, box-shadow 0.15s ease;
  font-weight: 700;
  font-size: 15px;
}
.under main button.exercise-stats-pill:hover {
  transform: translateY(-1px);
  box-shadow: 0 4px 10px rgba(15, 23, 42, 0.12);
}
.under main button.exercise-stats-pill:focus-visible {
  outline: 2px solid var(--purple, #93a3fa);
  outline-offset: 2px;
}

body.exercise-stats-modal-open {
  overflow: hidden;
}
.under .exercise-stats-modal-host {
  position: relative;
  z-index: 300;
}
.under .exercise-stats-modal-host__main {
  position: relative;
  padding: 0;
}
.under .exercise-stats-question-modal {
  position: fixed;
  inset: 0;
  z-index: 12000;
  display: flex;
  align-items: center;
  justify-content: center;
  padding: 0 16px;
  box-sizing: border-box;
}
.under .exercise-stats-question-modal[hidden] {
  display: none !important;
}
.under .exercise-stats-question-modal__backdrop {
  position: absolute;
  inset: 0;
  background: rgba(15, 23, 42, 0.55);
}
.under .exercise-stats-question-modal__dialog {
  position: relative;
  z-index: 1;
  width: min(1120px, 100%);
  max-height: calc(100vh - 150px);
  overflow: auto;
  border-radius: 16px;
  background: #fff;
  box-shadow: 0 24px 60px rgba(15, 23, 42, 0.22);
  padding: 24px 28px 28px;
  box-sizing: border-box;
}
.under .exercise-stats-question-modal__close {
  position: absolute;
  top: 14px;
  right: 16px;
  z-index: 2;
  appearance: none;
  border: 0;
  background: transparent;
  color: #666;
  font-size: 28px;
  line-height: 1;
  cursor: pointer;
  padding: 4px 8px;
}
.under .exercise-stats-question-modal__close:hover {
  color: #111;
}
.under .exercise-stats-question-modal__header {
  padding-right: 36px;
  margin-bottom: 18px;
}
.under .exercise-stats-question-modal__title {
  margin: 0;
  font-size: 28px;
  font-weight: 800;
  font-family: var(--font-avo-bold);
  color: #111;
}
.under .exercise-stats-question-modal__meta {
  margin: 0;
  font-size: 14px;
  color: #666;
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  gap: 6px;
}
.under .exercise-stats-question-modal__tag {
  display: inline-flex;
  align-items: center;
  padding: 4px 12px;
  border-radius: 999px;
  background: rgba(147, 163, 250, 0.18);
  color: var(--purple, #6b7fe8);
  font-weight: 700;
  font-size: 13px;
}
.under .exercise-stats-question-modal__layout {
  display: grid;
  grid-template-columns: minmax(0, 5.5fr) minmax(0, 4.5fr);
  column-gap: 10px;
  row-gap: 10px;
  align-items: start;
}
.under .exercise-stats-question-modal__layout--single {
  grid-template-columns: minmax(0, 1fr);
}
.under .exercise-stats-question-modal__context,
.under .exercise-stats-question-modal__question {
  min-width: 0;
}
.under .exercise-stats-question-modal__context .exercise-board__layout {
  grid-template-columns: minmax(0, 1fr);
  gap: 10px;
}
.under .exercise-stats-question-modal__context-block + .exercise-stats-question-modal__context-block,
.under .exercise-stats-question-modal__context-block + details {
  margin-top: 14px;
}
.under .exercise-stats-question-modal__context .exercise-board__image img {
  display: block;
  width: 100%;
  height: auto;
  border-radius: 10px;
}
.under .exercise-stats-question-modal__card {
  border: 1px solid #eceef4;
  border-radius: 14px;
  padding: 16px;
  background: #fff;
}
.under .exercise-stats-question-modal__card .exercise-answer-list {
  margin-top: 12px;
}
.under .exercise-stats-question-modal__explanation {
  margin-top: 16px;
  border: 1px solid #eceef4;
  border-radius: 12px;
  background: #fafbff;
  overflow: hidden;
}
.under .exercise-stats-question-modal__explanation > summary {
  display: flex;
  align-items: center;
  gap: 8px;
  padding: 12px 14px 5px;
  cursor: pointer;
  font-weight: 700;
  list-style: none;
  font-size: 15px;
}
.under .exercise-stats-question-modal__explanation > summary::-webkit-details-marker {
  display: none;
}
.under .exercise-stats-question-modal__explanation-body {
  padding: 0 14px 14px;
  color: #444;
  line-height: 1.65;
}
.under .exercise-stats-question-modal__explanation-body p{font-size: 15px;}

@media (max-width: 900px) {
  .under .exercise-stats-question-modal__layout {
    grid-template-columns: minmax(0, 1fr);
  }
  .under .exercise-stats-question-modal__dialog {
    padding: 20px 16px 22px;
  }
  .under .exercise-stats-question-modal__title {
    font-size: 22px;
  }
}

@media (max-width: 480px) {
  .under main .exercise-grid {
    grid-template-columns: 1fr;
  }
  .under main .exercise-card__body {
    padding-top: 18px;
  }
}
/*==========================================================
                E X E R C I S E   S I N G L E
==========================================================*/
.under main .exercise-single__main {
  max-width: 100%;
  margin: 0 auto;
}
.under main .exercise-single__header {
  padding: 15px 20px;
  margin-bottom: 24px;
  border-radius: 20px;
  border: 1px solid #e4e7f2;
  background: linear-gradient(180deg, #f7f8ff 0%, #ffffff 100%);
  box-shadow: 0 10px 28px rgba(15, 23, 42, 0.06);
}
.under main .exercise-single__headline {
  display: block;
}
.under main .exercise-single__summary,
.under main .exercise-single__content {
  margin-top: 14px;
}
.under main .exercise-single__stats {
  display: grid;
  gap: 12px;
}
.under main .exercise-single__stat {
  display: flex;
  align-items: center;
}
.under main .exercise-single__stat strong {
  display: block;
}
.under main .exercise-single__stat-label {
  display: block;
  font-size: 13px;
  font-weight: 700;
  color: #7b8194;
  text-transform: uppercase;
  letter-spacing: 0.04em;
}
.under main .exercise-toolbar {
  position: sticky;
  top: 127px;
  z-index: 10;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 16px;
  margin-bottom: 24px;
  padding: 12px;
  border: 1px solid #e4e7f2;
  border-radius: 16px;
  background: rgba(255, 255, 255, 0.96);
  box-shadow: 0 10px 28px rgba(15, 23, 42, 0.08);
  backdrop-filter: blur(10px);
}
.under main .exercise-set-tabs {
  display: flex;
  align-items: center;
  flex-wrap: wrap;
  gap: 10px;
  min-width: 0;
}
.under main .exercise-set-tabs__item {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  min-height: 42px;
  padding: 10px 16px;
  border: 1px solid #d8deef;
  border-radius: 10px;
  background: #fff;
  color: var(--dark-blue);
  font-size: 14px;
  font-weight: 700;
  line-height: 1.3;
  transition:
    background 0.2s ease,
    border-color 0.2s ease,
    color 0.2s ease,
    box-shadow 0.2s ease;
}
.under main .exercise-set-tabs__item:hover,
.under main .exercise-set-tabs__item.is-active {
  border-color: var(--purple);
  background: var(--purple);
  color: #fff;
  box-shadow: 0 8px 20px rgba(74, 92, 189, 0.2);
}
.under main .exercise-toolbar__actions {
  display: flex;
  align-items: center;
  gap: 10px;
  flex-shrink: 0;
}
.under main .exercise-toolbar__exit {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  min-height: 48px;
  padding: 12px 18px;
  border: 1px solid #e0a9ae;
  border-radius: 999px;
  background: #fff8f8;
  color: #c95962;
  font-weight: 700;
  font-size: var(--mfont-size);
}
.under main .exercise-toolbar__exit:hover {
  background: #ffe9eb;
}
.under main .exercise-submit-button {
  border: 1px solid var(--purple);
  background: var(--purple);
  color: #fff;
  transition:
    background 0.2s ease,
    border-color 0.2s ease,
    opacity 0.2s ease;
}
.under main .exercise-submit-button:hover {
  border-color: var(--dark-blue);
  background: var(--dark-blue);
}
.under main .exercise-workspace {
  display: grid;
  grid-template-columns: minmax(0, 1fr) 250px;
  gap: 10px;
  align-items: start;
}
.under main .exercise-workspace.is-no-sidebar {
  grid-template-columns: minmax(0, 1fr);
}
.under main .exercise-workspace__main {
  display: grid;
  gap: 16px;
  min-width: 0;
}
.under main .exercise-workspace__sidebar {
  position: sticky;
  top: 150px;
}
.under main .exercise-board {
  padding: 10px;
  border: 1px solid #e4e7f2;
  border-radius: 20px;
  background: #fff;
  box-shadow: 0 10px 28px rgba(15, 23, 42, 0.06);
  scroll-margin-top: 220px;
}
.under main .exercise-board__head {
  display: flex;
  align-items: flex-start;
  justify-content: space-between;
  gap: 16px;
  margin-bottom: 16px;
}
.under main .exercise-board__head h3 {
  margin-bottom: 0;
}
.under main .exercise-board__eyebrow {
  display: inline-block;
  margin-bottom: 8px;
  padding: 5px 10px;
  border-radius: 999px;
  background: #eef0ff;
  color: var(--purple);
  font-size: 12px;
  font-weight: 700;
  text-transform: uppercase;
  letter-spacing: 0.04em;
}
.under main .exercise-board__layout {
  display: grid;
  grid-template-columns: 5.5fr 4.5fr;
  gap: 18px;
  align-items: start;
}
.under main .exercise-board__layout--fill,
.under main .exercise-board__layout--full {
  grid-template-columns: 1fr;
}
/* Audio transcript: chỉ hiện sau khi nộp bài (form có .is-submitted) */
.under main .exercise-quiz-form:not(.is-submitted) .exercise-board__audio-transcript {
  display: none;
}
/* Bộ chỉ có transcript: không chiếm cột context trước khi nộp */
.under main .exercise-quiz-form:not(.is-submitted) .exercise-board__layout--transcript-only .exercise-board__context {
  display: none;
}
.under main .exercise-quiz-form:not(.is-submitted) .exercise-board__layout--transcript-only {
  grid-template-columns: 1fr;
}
.under main .exercise-board__context,
.under main .exercise-board__questions {
  display: grid;
  gap: 8px;
  min-width: 0;
}
.under main .exercise-board__panel {
  padding: 0;
}
.under main .exercise-quiz-form #ez-toc-container{display: none;}
.under main .exercise-board__panel h4 {
  margin-bottom: 12px;
  font-size: var(--mfont-size);
  text-align: left;
}
.under main .exercise-board__panel-content > *:last-child {
  margin-bottom: 0;
}

.under main  .exercise-board__panel-content p{text-align: justify;}
.under main .exercise-board__panel-content--icon-lead {
  display: flex;
  gap: 10px;
  align-items: flex-start;
}
.under main .exercise-board__panel-icon {
  flex-shrink: 0;
  line-height: 1.6;
  font-size: 17px;
  margin-right: 6px;
}
.under main .exercise-board__panel-content--icon-lead .exercise-board__panel-body {
  flex: 1;
  min-width: 0;
}
.under main .exercise-board__panel-content--icon-lead .exercise-board__panel-body > *:first-child {
  margin-top: 0;
}
.under main .exercise-board__panel-content--icon-lead .exercise-board__panel-body p{font-size: 15px;}
.under main .exercise-board__image {
  overflow: hidden;
  display: flex;
  align-items: center;
  justify-content: center;
}
.under main .exercise-board__image-img {
  max-height: calc(100vh - 204px);
  width: auto;
  max-width: 100%;
  height: auto;
  object-fit: cover;
  display: block;
  border-radius: 16px;
}
.under main .exercise-board__details summary {
  cursor: pointer;
  font-weight: 700;
  list-style: none;
  font-size: 18px;
}
.under main .exercise-board__details summary::-webkit-details-marker {
  display: none;
}
.under main .exercise-board__details summary::after {
  content: "+";
  float: right;
}
.under main .exercise-board__details[open] summary::after {
  content: "-";
}
.under main .exercise-board__details[open] .exercise-board__panel-content {
  margin-top: 14px;
}
.under main .exercise-question-card {
  padding: 12px;
  border: 1px solid #e4e7f2;
  border-radius: 18px;
  background: #fff;
  box-shadow: 0 6px 18px rgba(15, 23, 42, 0.04);
  scroll-margin-top: 120px;
  margin-top: 12px;
}
.under main .exercise-question-card__head {
  display: flex;
  align-items: flex-start;
  flex-wrap: wrap;
  gap: 8px 4px;
  margin-bottom: 6px;
}
.under main .exercise-question-card__badge {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  flex-shrink: 0;
  color: #706be0;
  font-size: var(--mfont-size);
  font-weight: 800;
  line-height: 1.7;
}
.under main .exercise-question-card__content--inline {
  flex: 1;
  min-width: min(100%, 200px);
  margin-bottom: 0;
}
.under main .exercise-question-card__content--inline > *:first-child {
  margin-top: 0;
}
.under main .exercise-question-card__content--inline > p {
  font-weight: 600;
  line-height: 1.5;
  margin-bottom: 0;
}
.under main .exercise-question-card[data-question-type="fill_blank"] .exercise-question-card__head {
  margin-bottom: 8px;
}
.under main .exercise-question-card__meta {
  display: flex;
  align-items: center;
  gap: 8px 14px;
  flex-wrap: wrap;
  color: #7b8194;
  font-size: 13px;
}
.under main .exercise-question-card__content {
  margin-bottom: 10px;
}
.under main .exercise-question-card__content > p{font-weight: 600;line-height: 1.7;}
.under main .exercise-question-card__content iframe,
.under main .exercise-board__panel-content iframe {
  display: block;
  width: 100%;
  max-width: 100%;
  aspect-ratio: 16 / 9;
  height: auto;
  margin: 12px 0;
  border: 0;
}
.under main .exercise-question-card__content--inline iframe {
  flex-basis: 100%;
}
.under main .exercise-question-card__content > *:last-child {
  margin-bottom: 0;
}
.under main .exercise-answer-list {
  gap: 6px;
}
.under main .exercise-answer-option {
  align-items: center;
  gap: 10px;
  padding: 6px 8px;
  border-radius: 14px;
  background: #fff;
  margin-bottom: 0;
}
.under main .exercise-answer-option input {
  width: 20px;
  height: 20px;
  margin: 0;
}
/* .under main .exercise-answer-option input::before {
  top: 50%;
  left: 50%;
  transform: translate(-50%, -50%) scale(0);
} */
/* .under main .exercise-answer-option input:checked::before {
  transform: translate(-50%, -50%) scale(1);
} */
.under main .exercise-answer-option__label {
  min-width: 20px;
  font-weight: 800;
  color: var(--purple);
  font-size: var(--mfont-size);
  line-height: 1.4;
}
.under main .exercise-answer-option__text {
  font-size: var(--mfont-size);
  line-height: 1.5;
  font-weight: 400;
  color: var(--dark-blue);
}
.under main .exercise-question-feedback__selected,
.under main .exercise-question-feedback__correct {
  margin-bottom: 8px;
}
.under main .exercise-question-feedback__selected{display: none;}
.under main .exercise-question-card[data-question-type="fill_blank"] .exercise-question-feedback__correct {
  display: flex;
  flex-direction: column;
  gap: 4px;
  line-height: 1.65;
}
.under main .exercise-question-feedback__correct-heading {
  display: block;
  font-weight: 700;
  margin-bottom: 2px;
}
.under main .exercise-question-feedback__correct-line {
  display: block;
}
.under main .exercise-question-feedback__correct-mark {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  width: 18px;
  height: 18px;
  margin-right: 6px;
  border-radius: 999px;
  vertical-align: text-bottom;
}
.under main .exercise-question-feedback__correct-mark.is-correct {
  background: #d5f2e3;
  color: #1e7e34;
}
.under main .exercise-question-feedback__correct-mark.is-wrong {
  background: #fee2e2;
  color: #dc2626;
}
.under main .exercise-question-feedback__correct-mark.is-skipped {
  background: #9ca3af;
  color: #fff;
  border-radius: 4px;
}
.under main .exercise-question-feedback__correct-mark-icon {
  position: relative;
  display: block;
}
.under main .exercise-question-feedback__correct-mark-icon--check {
  width: 9px;
  height: 5px;
  border-left: 2px solid currentColor;
  border-bottom: 2px solid currentColor;
  transform: rotate(-45deg) translateY(-1px);
}
.under main .exercise-question-feedback__correct-mark-icon--cross {
  width: 10px;
  height: 10px;
}
.under main .exercise-question-feedback__correct-mark-icon--cross::before,
.under main .exercise-question-feedback__correct-mark-icon--cross::after {
  content: "";
  position: absolute;
  top: 4px;
  left: 0;
  width: 10px;
  height: 2px;
  background: currentColor;
  border-radius: 999px;
}
.under main .exercise-question-feedback__correct-mark-icon--cross::before {
  transform: rotate(45deg);
}
.under main .exercise-question-feedback__correct-mark-icon--cross::after {
  transform: rotate(-45deg);
}
.under main .exercise-question-feedback__correct-mark-icon--minus {
  width: 8px;
  height: 2px;
  background: currentColor;
  border-radius: 999px;
}
.under main .exercise-question-feedback__explanation > *:last-child {
  margin-bottom: 0;
}
.under main .exercise-question-nav {
  padding: 18px 23px 58px 18px;
  border: 1px solid #e4e7f2;
  border-radius: 20px;
  background: #fff;
  box-shadow: 0 10px 28px rgba(15, 23, 42, 0.06);
  max-height: calc(100vh - 120px);
  overflow-y: auto;
  scrollbar-width: thin;
  scrollbar-color: #c8d1ea transparent;
}
.under main .exercise-question-nav::-webkit-scrollbar,
body.exercise-single-page .blogmoira-exercise-quiz-root--viewport-boards .exercise-board__context::-webkit-scrollbar,
body.exercise-single-page .blogmoira-exercise-quiz-root--viewport-boards .exercise-board__questions::-webkit-scrollbar,
.under main .blogmoira-exercise-quiz-root--viewport-boards .exercise-board__context::-webkit-scrollbar,
.under main .blogmoira-exercise-quiz-root--viewport-boards .exercise-board__questions::-webkit-scrollbar,
body.exercise-single-page .blogmoira-exercise-quiz-root--viewport-boards .exercise-board__layout--fill::-webkit-scrollbar,
.under main .blogmoira-exercise-quiz-root--viewport-boards .exercise-board__layout--fill::-webkit-scrollbar {
  width: 2px;
}
.under main .exercise-question-nav::-webkit-scrollbar-track,
body.exercise-single-page .blogmoira-exercise-quiz-root--viewport-boards .exercise-board__context::-webkit-scrollbar-track,
body.exercise-single-page .blogmoira-exercise-quiz-root--viewport-boards .exercise-board__questions::-webkit-scrollbar-track,
.under main .blogmoira-exercise-quiz-root--viewport-boards .exercise-board__context::-webkit-scrollbar-track,
.under main .blogmoira-exercise-quiz-root--viewport-boards .exercise-board__questions::-webkit-scrollbar-track,
body.exercise-single-page .blogmoira-exercise-quiz-root--viewport-boards .exercise-board__layout--fill::-webkit-scrollbar-track,
.under main .blogmoira-exercise-quiz-root--viewport-boards .exercise-board__layout--fill::-webkit-scrollbar-track {
  background: transparent;
}
.under main .exercise-question-nav::-webkit-scrollbar-thumb,
body.exercise-single-page .blogmoira-exercise-quiz-root--viewport-boards .exercise-board__context::-webkit-scrollbar-thumb,
body.exercise-single-page .blogmoira-exercise-quiz-root--viewport-boards .exercise-board__questions::-webkit-scrollbar-thumb,
.under main .blogmoira-exercise-quiz-root--viewport-boards .exercise-board__context::-webkit-scrollbar-thumb,
.under main .blogmoira-exercise-quiz-root--viewport-boards .exercise-board__questions::-webkit-scrollbar-thumb,
body.exercise-single-page .blogmoira-exercise-quiz-root--viewport-boards .exercise-board__layout--fill::-webkit-scrollbar-thumb,
.under main .blogmoira-exercise-quiz-root--viewport-boards .exercise-board__layout--fill::-webkit-scrollbar-thumb {
  border-radius: 999px;
  background: #c8d1ea;
}
.under main .exercise-question-nav__header h3 {
  margin-bottom: 8px;
  text-align: left;
  font-size: 20px;
}
.under main .exercise-question-nav__section {
  margin-top: 18px;
  padding-top: 18px;
  border-top: 1px solid #edf0f6;
  padding-bottom: 0;
}
.under main .exercise-question-nav__section:first-of-type {
  margin-top: 0;
  padding-top: 0;
  border-top: none;
}
.under main .exercise-question-nav__section-title {
  margin-bottom: 10px;
  font-size: var(--mfont-size);
  font-weight: 800;
  color: var(--dark-blue);
}
.under main .exercise-question-nav__list {
  display: grid;
  grid-template-columns: repeat(5, minmax(0, 1fr));
  gap: 8px;
}
.under main .exercise-question-nav__item {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  width: 100%;
  aspect-ratio: 1;
  border: 1px solid #e0e5f2;
  border-radius: 10px;
  background: #fff;
  color: #6d7387;
  font-size: 14px;
  font-weight: 700;
  transition:
    background 0.2s ease,
    border-color 0.2s ease,
    color 0.2s ease,
    transform 0.2s ease;
}
.under main .exercise-question-nav__item:hover:not(.is-current):not(.is-in-set) {
  border-color: var(--l_purple);
  background: var(--l_purple);
  transform: translateY(-1px);
}
.under main .exercise-question-nav__item.is-answered:not(.is-current):not(.is-in-set) {
  border-color: var(--purple);
  color: #fff;
  background: var(--purple);
}
.under main .exercise-question-nav__item.is-in-set,
.under main .exercise-question-nav__item.is-in-set.is-wrong,
.under main .exercise-question-nav__item.is-in-set.is-correct,
.under main .exercise-question-nav__item.is-in-set.is-skipped,
.under main .exercise-question-nav__item.is-in-set.is-answered {
  border-color: #d9dfff;
  background: #d9dfff;
  color: #6d7387;
  transform: none;
}
.under main .exercise-question-nav__item.is-in-set:hover {
  border-color: var(--purple);
  background: #d9dfff;
  color: var(--purple);
}
.under main .exercise-question-nav__item.is-current,
.under main .exercise-question-nav__item.is-current.is-wrong,
.under main .exercise-question-nav__item.is-current.is-correct,
.under main .exercise-question-nav__item.is-current.is-skipped,
.under main .exercise-question-nav__item.is-current.is-answered {
  border-color: var(--purple);
  background: var(--purple);
  color: #fff;
  transform: none;
}
.under main .exercise-question-nav__item.is-current:hover {
  border-color: var(--dark-blue);
  background: var(--dark-blue);
  color: #fff;
}
.under main .exercise-question-nav__item.is-correct:not(.is-current):not(.is-in-set) {
  border-color: #51b36c;
  background: #eaf8ef;
  color: #2d8545;
}
.under main .exercise-question-nav__item.is-wrong:not(.is-current):not(.is-in-set) {
  border-color: #e65d5d;
  background: #fff1f1;
  color: #c94a4a;
}
.under main .exercise-question-nav__item.is-prior-wrong:not(.is-current):not(.is-in-set),
.under main .exercise-question-nav__item.is-answered.is-prior-wrong:not(.is-current):not(.is-in-set) {
  border-color: #e65d5d;
  background: #fff1f1;
  color: #c94a4a;
}
.under main .exercise-question-nav__item.is-prior-wrong.is-in-set:not(.is-current) {
  border-color: #e65d5d;
  background: #fff1f1;
  color: #c94a4a;
}
.under main .exercise-question-nav__item.is-skipped:not(.is-current):not(.is-in-set) {
  border-color: #e6c65d;
  background: #fff8e1;
  color: #9d7a14;
}
.under main .exercise-submit-bar {
  margin-top: 14px;
  border: 1px solid #e4e7f2;
  box-shadow: 0 10px 14px rgba(15, 23, 42, 0.06);
}
/* Trang làm bài: header gọn + toolbar nộp bài trên header */
body.exercise-single-page main {
  display: flex;
  flex-direction: column;
  padding-top: 64px;
}
body.exercise-single-page .exercise-single__main {
  --exercise-titlebar-height: 46px;
  position: relative;
}
body.exercise-single-page .exercise-single__main > h4.title {
  flex-shrink: 0;
  margin: 0;
  padding: 13px 56px 10px 24px;
  font-size: 18px;
  line-height: 1.35;
  font-weight: 700;
  text-align: center;
  color: var(--dark-blue);
  background: #fff;
  overflow: hidden;
  text-overflow: ellipsis;
  white-space: nowrap;
}
header.exercise-focus-header .h_box--exercise-focus {
  box-shadow: 0 1px 0 #e5e7ef;
}
header.exercise-focus-header .h_top--exercise-focus {
  display: flex;
  flex-wrap: nowrap;
  align-items: center;
  justify-content: space-between;
  gap: 20px;
  padding: 10px 0;
  min-height: 64px;
  box-sizing: border-box;
}
header.exercise-focus-header .h_left {
  flex: 0 0 auto;
  margin-right: auto;
}
header.exercise-focus-header .h_left #logo {
  width: 148px;
  margin: 0;
}
header.exercise-focus-header .h_left #logo img {
  display: block;
  width: 148px;
  height: auto;
}
.exercise-focus-header__actions {
  flex: 0 1 auto;
  min-width: 0;
  margin-left: auto;
  display: flex;
  align-items: center;
  justify-content: flex-end;
  gap: 12px;
}
header.exercise-focus-header .exercise-focus-header__account-btn {
  flex: 0 0 auto;
  min-height: 42px;
  padding: 10px 20px 8px;
  font-size: 15px;
}
.exercise-focus-header__toolbar {
  flex: 0 1 auto;
  min-width: 0;
  display: flex;
  align-items: center;
  justify-content: flex-end;
}
.exercise-focus-header__nav-toggle {
  display: none;
  flex: 0 0 auto;
  margin-left: 8px;
}
body.exercise-single-page .exercise-submit-bar.exercise-submit-bar--focus-header.is-mounted-in-header {
  display: inline-flex;
  flex-wrap: nowrap;
  align-items: center;
  justify-content: flex-end;
  width: auto;
  max-width: 100%;
  margin: 0;
  padding: 0;
  border: 0;
  border-radius: 0;
  box-shadow: none;
  background: transparent;
  gap: 16px;
}
body.exercise-single-page .exercise-submit-bar.is-mounted-in-header .exercise-submit-bar__meta {
  flex: 0 1 auto;
  min-width: 0;
  padding: 0;
  margin: 0;
}
body.exercise-single-page .exercise-submit-bar.is-mounted-in-header .exercise-submit-bar__meta-line {
  display: inline-flex;
  flex-wrap: nowrap;
  align-items: center;
  justify-content: flex-end;
  gap: 0;
  margin: 0;
  padding: 6px 14px;
  border-radius: 999px;
  background: #f4f6fb;
  border: 1px solid #e4e8f2;
}
body.exercise-single-page .exercise-submit-bar.is-mounted-in-header .exercise-submit-bar__meta-total {
  font-size: 13px;
  font-weight: 600;
  color: #4b5563;
  white-space: nowrap;
  line-height: 1.2;
}
body.exercise-single-page .exercise-submit-bar.is-mounted-in-header .exercise-submit-bar__meta-timer {
  display: inline-flex;
  align-items: center;
  margin-left: 14px;
  padding-left: 14px;
  border-left: 1px solid #d5dbe8;
}
body.exercise-single-page .exercise-submit-bar.is-mounted-in-header .exercise-quiz-timer {
  display: inline-block;
  min-width: 76px;
  font-size: 20px;
  font-weight: 700;
  font-variant-numeric: tabular-nums;
  letter-spacing: 0.02em;
  line-height: 1;
  color: var(--dark-blue, #0b0733);
}
body.exercise-single-page .exercise-submit-bar.is-mounted-in-header .exercise-submit-button {
  appearance: none;
  flex: 0 0 auto;
  display: inline-flex;
  align-items: center;
  justify-content: center;
  min-width: 120px;
  min-height: 42px;
  padding: 10px 22px;
  border: 2px solid var(--purple, #93a3fa);
  border-radius: 999px;
  background: var(--purple, #93a3fa);
  color: #fff;
  font-size: 15px;
  font-weight: 700;
  line-height: 1.2;
  white-space: nowrap;
  cursor: pointer;
  box-sizing: border-box;
  transition: background 0.2s ease, border-color 0.2s ease, box-shadow 0.2s ease, transform 0.15s ease;
}
body.exercise-single-page .exercise-submit-bar.is-mounted-in-header .exercise-submit-button:hover {
  background: var(--dark-blue, #0b0733);
  border-color: var(--dark-blue, #0b0733);
  color: #fff;
  box-shadow: 0 6px 16px rgba(11, 7, 51, 0.12);
}
body.exercise-single-page .exercise-submit-bar.is-mounted-in-header .exercise-submit-button:active {
  transform: translateY(1px);
}
body.exercise-single-page .exercise-submit-bar.is-mounted-in-header .exercise-submit-button[disabled] {
  background: #c5cad6;
  border-color: #9aa3b5;
  color: #fff;
  cursor: default;
  pointer-events: none;
  box-shadow: none;
}
body.exercise-single-page .blogmoira-exercise-quiz-root--viewport-boards .exercise-submit-bar--focus-header:not(.is-mounted-in-header) {
  display: none;
}

/* Viewport boards: mỗi .exercise-board = 1 màn hình (chỉ trang single bài tập, không áp theory embed) */
body.exercise-single-page #content {
  flex: 1;
  display: flex;
  flex-direction: column;
  min-height: 0;
}
body.exercise-single-page #content > .inner.inner100 {
  flex: 1;
  display: flex;
  flex-direction: column;
  min-height: 0;
}
body.exercise-single-page .exercise-single {
  flex: 1;
  display: flex;
  flex-direction: column;
  min-height: calc(100dvh - 64px);
  padding-bottom: 0;
  width: 100%;
  max-width: none;
}
body.exercise-single-page .exercise-single__main {
  flex: 1;
  display: flex;
  flex-direction: column;
  min-height: 0;
  width: 100%;
  max-width: none;
}
body.exercise-single-page .blogmoira-exercise-quiz-root--viewport-boards {
  flex: 1;
  min-height: 0;
  width: 100%;
  max-width: none;
  display: flex;
  flex-direction: column;
}
body.exercise-single-page .blogmoira-exercise-quiz-root--viewport-boards .exercise-quiz-form--viewport-boards {
  flex: 1;
  min-height: 0;
  display: flex;
  flex-direction: column;
}
body.exercise-single-page .blogmoira-exercise-quiz-root--viewport-boards .exercise-workspace {
  flex: 1;
  min-height: 0;
  min-width: 0;
  width: 100%;
  align-items: start;
  overflow: visible;
  --exercise-sidebar-col-width: 221px;
  grid-template-columns: minmax(0, 1fr) var(--exercise-sidebar-col-width);
  transition: grid-template-columns 0.32s ease;
}
body.exercise-single-page.exercise-sidebar-collapsed .blogmoira-exercise-quiz-root--viewport-boards .exercise-workspace {
  --exercise-sidebar-col-width: 48px;
}
body.exercise-single-page .exercise-workspace__sidebar-wrap {
  display: flex;
  flex-direction: column;
  align-items: stretch;
  min-width: 0;
  min-height: 0;
  height: 100%;
  overflow: hidden;
  grid-column: 2;
  align-self: stretch;
}
body.exercise-single-page .exercise-sidebar-toggle {
  position: absolute;
  top: 4px;
  right: 16px;
  z-index: 5;
  margin: 0;
  display: block;
  background-color: transparent;
}
body.exercise-single-page .blogmoira-exercise-quiz-root--viewport-boards .exercise-workspace__main,
.under main .blogmoira-exercise-quiz-root--viewport-boards .exercise-workspace__main {
  grid-column: 1;
  position: relative;
  display: flex;
  flex-direction: column;
  width: 100%;
  min-width: 0;
  min-height: 0;
  overflow: hidden;
  overscroll-behavior: contain;
}
body.exercise-single-page .exercise-workspace__sidebar {
  flex: 1;
  min-height: 0;
  min-width: 0;
  transition: opacity 0.28s ease, transform 0.32s ease, max-width 0.32s ease;
}
body.exercise-single-page.exercise-sidebar-collapsed .exercise-workspace__sidebar {
  opacity: 0;
  transform: translateX(12px);
  max-width: 0;
  pointer-events: none;
  visibility: hidden;
}
body.exercise-single-page header .exercise-focus-header__nav-toggle {
  display: none !important;
}
body.exercise-single-page .blogmoira-exercise-quiz-root--viewport-boards .exercise-board,
.under main .blogmoira-exercise-quiz-root--viewport-boards .exercise-board {
  display: none;
  width: 100%;
  min-width: 0;
  min-height: var(--exercise-board-viewport-height, 100%);
  max-height: var(--exercise-board-viewport-height, 100%);
  height: var(--exercise-board-viewport-height, 100%);
  box-sizing: border-box;
  flex-direction: column;
  overflow: hidden;
  margin-bottom: 0;
}
body.exercise-single-page .blogmoira-exercise-quiz-root--viewport-boards .exercise-board.is-active-board,
.under main .blogmoira-exercise-quiz-root--viewport-boards .exercise-board.is-active-board {
  display: flex;
  flex: 1 1 auto;
  align-self: stretch;
  max-width: 100%;
}
body.exercise-single-page .blogmoira-exercise-quiz-root--viewport-boards .exercise-question-card,
.under main .blogmoira-exercise-quiz-root--viewport-boards .exercise-question-card {
  width: 100%;
  max-width: 100%;
  box-sizing: border-box;
  scroll-margin-top: 0;
}
body.exercise-single-page .blogmoira-exercise-quiz-root--viewport-boards .exercise-answer-list,
.under main .blogmoira-exercise-quiz-root--viewport-boards .exercise-answer-list {
  width: 100%;
}
body.exercise-single-page .blogmoira-exercise-quiz-root--viewport-boards .exercise-answer-option,
.under main .blogmoira-exercise-quiz-root--viewport-boards .exercise-answer-option {
  width: 100%;
  max-width: 100%;
  box-sizing: border-box;
}
body.exercise-single-page .blogmoira-exercise-quiz-root--viewport-boards .exercise-board__layout,
.under main .blogmoira-exercise-quiz-root--viewport-boards .exercise-board__layout {
  flex: 1;
  min-height: 0;
  min-width: 0;
  width: 100%;
  height: 100%;
  align-items: stretch;
  grid-template-columns: minmax(0, 5.5fr) minmax(0, 4.5fr);
  grid-template-rows: minmax(0, 1fr);
}
body.exercise-single-page .blogmoira-exercise-quiz-root--viewport-boards .exercise-board__layout--fill,
.under main .blogmoira-exercise-quiz-root--viewport-boards .exercise-board__layout--fill {
  display: flex;
  flex-direction: column;
  grid-template-columns: unset;
  grid-template-rows: unset;
  overflow-y: auto;
  overflow-x: hidden;
  overscroll-behavior: contain;
  -webkit-overflow-scrolling: touch;
  align-items: stretch;
  padding-right: 5px;
  scrollbar-width: thin;
  scrollbar-color: #c8d1ea transparent;
  box-sizing: border-box;
}
body.exercise-single-page .blogmoira-exercise-quiz-root--viewport-boards .exercise-board__layout--full,
.under main .blogmoira-exercise-quiz-root--viewport-boards .exercise-board__layout--full {
  grid-template-columns: minmax(0, 1fr);
  grid-template-rows: minmax(0, 1fr);
}
body.exercise-single-page .blogmoira-exercise-quiz-root--viewport-boards .exercise-board__context,
body.exercise-single-page .blogmoira-exercise-quiz-root--viewport-boards .exercise-board__questions,
.under main .blogmoira-exercise-quiz-root--viewport-boards .exercise-board__context,
.under main .blogmoira-exercise-quiz-root--viewport-boards .exercise-board__questions {
  min-height: 0;
  min-width: 0;
  height: 100%;
  max-height: 100%;
  overflow-y: auto;
  overflow-x: hidden;
  overscroll-behavior: contain;
  -webkit-overflow-scrolling: touch;
  align-content: start;
  padding-right: 5px;
  scrollbar-width: thin;
  scrollbar-color: #c8d1ea transparent;
  box-sizing: border-box;
}
body.exercise-single-page .blogmoira-exercise-quiz-root--viewport-boards .exercise-board__layout--fill .exercise-board__context,
body.exercise-single-page .blogmoira-exercise-quiz-root--viewport-boards .exercise-board__layout--fill .exercise-board__questions,
.under main .blogmoira-exercise-quiz-root--viewport-boards .exercise-board__layout--fill .exercise-board__context,
.under main .blogmoira-exercise-quiz-root--viewport-boards .exercise-board__layout--fill .exercise-board__questions {
  height: auto;
  max-height: none;
  overflow: visible;
  flex-shrink: 0;
}
body.exercise-single-page .blogmoira-exercise-quiz-root--viewport-boards .exercise-board__layout--full .exercise-board__context,
.under main .blogmoira-exercise-quiz-root--viewport-boards .exercise-board__layout--full .exercise-board__context {
  height: 100%;
  max-height: 100%;
  align-self: stretch;
}
body.exercise-single-page .blogmoira-exercise-quiz-root--viewport-boards .exercise-board__layout--full .exercise-board__questions,
.under main .blogmoira-exercise-quiz-root--viewport-boards .exercise-board__layout--full .exercise-board__questions {
  height: 100%;
  min-height: 0;
  align-content: start;
  align-items: start;
  justify-items: stretch;
}
body.exercise-single-page .blogmoira-exercise-quiz-root--viewport-boards .exercise-board__layout--fill .exercise-question-card,
.under main .blogmoira-exercise-quiz-root--viewport-boards .exercise-board__layout--fill .exercise-question-card {
  width: 100%;
  margin-top: 12px;
}
body.exercise-single-page .blogmoira-exercise-quiz-root--viewport-boards .exercise-board__layout--fill .exercise-board__context + .exercise-board__questions .exercise-question-card:first-child,
.under main .blogmoira-exercise-quiz-root--viewport-boards .exercise-board__layout--fill .exercise-board__context + .exercise-board__questions .exercise-question-card:first-child {
  margin-top: 0;
}
body.exercise-single-page .blogmoira-exercise-quiz-root--viewport-boards .exercise-board__layout:not(.exercise-board__layout--fill):not(.exercise-board__layout--full) .exercise-board__context,
.under main .blogmoira-exercise-quiz-root--viewport-boards .exercise-board__layout:not(.exercise-board__layout--fill):not(.exercise-board__layout--full) .exercise-board__context {
  height: auto;
  max-height: 100%;
  align-self: start;
}
body.exercise-single-page .blogmoira-exercise-quiz-root--viewport-boards .exercise-board__layout:not(.exercise-board__layout--fill):not(.exercise-board__layout--full) .exercise-board__image-img,
.under main .blogmoira-exercise-quiz-root--viewport-boards .exercise-board__layout:not(.exercise-board__layout--fill):not(.exercise-board__layout--full) .exercise-board__image-img {
  max-height: calc(100vh - 220px);
}
body.exercise-single-page .blogmoira-exercise-quiz-root--viewport-boards .exercise-board__layout--full .exercise-board__questions {
  max-height: 100%;
}
body.exercise-single-page .blogmoira-exercise-quiz-root--viewport-boards .exercise-workspace__sidebar {
  position: static;
  top: auto;
  min-height: 0;
  height: 100%;
  max-height: 100%;
  overflow: hidden;
  display: flex;
  flex-direction: column;
}
body.exercise-single-page .blogmoira-exercise-quiz-root--viewport-boards .exercise-question-nav {
  flex: 1;
  min-height: 0;
  max-height: 100%;
  overflow-y: auto;
  overscroll-behavior: contain;
  padding: 10px 19px 20px 14px;
  scrollbar-width: thin;
  scrollbar-color: #c8d1ea transparent;
}
body.exercise-single-page .blogmoira-exercise-quiz-root--viewport-boards .exercise-submit-bar:not(.is-mounted-in-header) {
  flex-shrink: 0;
  margin-top: 10px;
}
body.exercise-single-page {
  overflow: hidden;
}
body.exercise-single-page #wrapper {
  min-height: 100dvh;
  overflow: hidden;
}
.exercise-nav-drawer__backdrop {
  display: none;
  position: fixed;
  inset: 0;
  top: 64px;
  z-index: 199;
  border: 0;
  padding: 0;
  margin: 0;
  background: rgba(11, 7, 51, 0.45);
  cursor: pointer;
}
@media (max-width: 991px) {
  body.exercise-single-page main {
    padding-top: 64px;
  }
  header.exercise-focus-header .h_top--exercise-focus {
    gap: 10px;
    padding: 8px 0;
  }
  header.exercise-focus-header .h_left #logo,
  header.exercise-focus-header .h_left #logo img {
    width: 96px;
  }
  .exercise-focus-header__nav-toggle {
    display: flex;
  }
  .exercise-focus-header__actions {
    gap: 6px;
    flex: 1 1 0;
    min-width: 0;
  }
  .exercise-focus-header__toolbar {
    flex: 0 0 auto;
    min-width: 0;
  }
  header.exercise-focus-header .exercise-focus-header__account-btn {
    gap: 0;
    justify-content: center;
    flex-shrink: 0;
    min-width: 38px;
    min-height: 38px;
    padding: 8px 10px 7px;
    font-size: 13px;
  }
  header.exercise-focus-header .exercise-focus-header__account-btn-label {
    display: none;
  }
  body.exercise-single-page .exercise-submit-bar.exercise-submit-bar--focus-header.is-mounted-in-header {
    gap: 6px;
    flex-shrink: 0;
  }
  body.exercise-single-page .exercise-submit-bar.is-mounted-in-header .exercise-submit-bar__meta,
  body.exercise-single-page .exercise-submit-bar.is-mounted-in-header .exercise-submit-bar__meta-line {
    display: contents;
  }
  body.exercise-single-page .exercise-submit-bar.is-mounted-in-header .exercise-submit-bar__meta-total {
    display: none;
  }
  body.exercise-single-page .exercise-submit-bar.is-mounted-in-header .exercise-submit-bar__meta-timer {
    display: inline-flex;
    align-items: center;
    flex-shrink: 0;
    margin-left: 0;
    padding: 4px 8px;
    border: 1px solid #e4e8f2;
    border-radius: 999px;
    background: #f4f6fb;
  }
  body.exercise-single-page .exercise-submit-bar.is-mounted-in-header .exercise-quiz-timer {
    font-size: 14px;
    min-width: 8ch;
    letter-spacing: 0;
  }
  body.exercise-single-page .exercise-submit-bar.is-mounted-in-header .exercise-submit-button {
    flex-shrink: 0;
    min-width: 72px;
    min-height: 38px;
    padding: 8px 12px;
    font-size: 13px;
  }
  body.exercise-single-page.exercise-nav-open .exercise-nav-drawer__backdrop {
    display: none;
  }
  body.exercise-single-page .blogmoira-exercise-quiz-root--viewport-boards .exercise-workspace {
    grid-template-columns: 1fr;
  }
  body.exercise-single-page .exercise-workspace__sidebar-wrap {
    position: static;
    width: 100%;
    height: 0;
    overflow: visible;
    pointer-events: none;
    grid-column: auto;
  }
  body.exercise-single-page .exercise-sidebar-toggle {
    top: 0;
    right: 16px;
    z-index: 20;
    pointer-events: auto;
    margin: 0;
  }
  body.exercise-single-page.exercise-nav-open .exercise-sidebar-toggle {
    position: fixed;
    top: 84px;
    right: 16px;
    z-index: 220;
    padding: 10px;
    border-radius: 999px;
  }
  body.exercise-single-page .exercise-workspace__sidebar {
    display: none;
    transition: none;
  }
  body.exercise-single-page.exercise-nav-open .blogmoira-exercise-quiz-root--viewport-boards .exercise-workspace__sidebar {
    display: flex;
    position: fixed;
    top: 64px;
    left: 0;
    right: 0;
    bottom: 0;
    z-index: 210;
    width: 100%;
    max-width: 100%;
    height: auto;
    max-height: none;
    margin: 0;
    padding: 12px;
    box-sizing: border-box;
    background: #fff;
    box-shadow: 0 16px 40px rgba(15, 23, 42, 0.18);
    opacity: 1;
    transform: none;
    visibility: visible;
    pointer-events: auto;
  }
  body.exercise-single-page.exercise-nav-open .exercise-workspace__sidebar {
    display: flex;
    position: fixed;
    top: 64px;
    left: 0;
    right: 0;
    bottom: 0;
    z-index: 210;
    width: 100%;
    max-width: 100%;
    height: auto;
    max-height: none;
    margin: 0;
    padding: 12px;
    box-sizing: border-box;
    background: #fff;
    box-shadow: 0 16px 40px rgba(15, 23, 42, 0.18);
    opacity: 1;
    transform: none;
    visibility: visible;
    pointer-events: auto;
  }
  body.exercise-single-page.exercise-nav-open .exercise-question-nav {
    flex: 1;
    min-height: 0;
    max-height: none;
    overflow-y: auto;
  }
}
@media (max-width: 420px) {
  header.exercise-focus-header .h_top--exercise-focus {
    gap: 8px;
  }
  header.exercise-focus-header .h_left #logo,
  header.exercise-focus-header .h_left #logo img {
    width: 82px;
  }
  .exercise-focus-header__actions {
    gap: 5px;
  }
  header.exercise-focus-header .exercise-focus-header__account-btn {
    min-width: 36px;
    min-height: 36px;
    padding: 7px 8px 6px;
  }
  body.exercise-single-page .exercise-submit-bar.exercise-submit-bar--focus-header.is-mounted-in-header {
    gap: 5px;
  }
  body.exercise-single-page .exercise-submit-bar.is-mounted-in-header .exercise-submit-bar__meta-timer {
    padding: 3px 6px;
  }
  body.exercise-single-page .exercise-submit-bar.is-mounted-in-header .exercise-quiz-timer {
    font-size: 13px;
    min-width: 7.5ch;
  }
  body.exercise-single-page .exercise-submit-bar.is-mounted-in-header .exercise-submit-button {
    min-width: 64px;
    min-height: 36px;
    padding: 7px 10px;
    font-size: 12px;
  }
}
@media (max-width: 1280px) {
  .under main .exercise-single__headline {
    grid-template-columns: 1fr;
  }
  .under main .exercise-single__stats {
    grid-template-columns: repeat(3, minmax(0, 1fr));
  }
  .under main .exercise-workspace {
    grid-template-columns: 1fr;
  }
  .under main .exercise-workspace__sidebar {
    position: static;
  }
}
@media (max-width: 750px) {
  header.exercise-focus-header .h_top--exercise-focus {
    flex-wrap: nowrap;
  }
  .under main .exercise-board__layout,
  body.exercise-single-page .blogmoira-exercise-quiz-root--viewport-boards .exercise-board__layout {
    display: flex;
    flex-direction: column;
    gap: 10px;
    grid-template-columns: unset;
    grid-template-rows: unset;
    height: 100%;
    min-height: 0;
    overflow: hidden;
    align-items: stretch;
  }
  .under main .blogmoira-exercise-quiz-root--viewport-boards .exercise-board__context,
  body.exercise-single-page .blogmoira-exercise-quiz-root--viewport-boards .exercise-board__context {
    flex: 0 0 auto;
    height: auto;
    min-height: 0;
    max-height: calc((var(--exercise-board-viewport-height, 100dvh) - 10px) / 2);
    overflow-y: auto;
    overflow-x: hidden;
    overscroll-behavior: contain;
    -webkit-overflow-scrolling: touch;
  }
  .under main .blogmoira-exercise-quiz-root--viewport-boards .exercise-board__questions,
  body.exercise-single-page .blogmoira-exercise-quiz-root--viewport-boards .exercise-board__questions {
    flex: 1 1 auto;
    height: auto;
    max-height: none;
    min-height: 0;
    overflow-y: auto;
    overflow-x: hidden;
    overscroll-behavior: contain;
    -webkit-overflow-scrolling: touch;
  }
  .under main .blogmoira-exercise-quiz-root--viewport-boards .exercise-board__layout:not(.exercise-board__layout--fill):not(.exercise-board__layout--full) .exercise-board__context,
  body.exercise-single-page .blogmoira-exercise-quiz-root--viewport-boards .exercise-board__layout:not(.exercise-board__layout--fill):not(.exercise-board__layout--full) .exercise-board__context {
    max-height: calc((var(--exercise-board-viewport-height, 100dvh) - 10px) / 2);
  }
  .under main .blogmoira-exercise-quiz-root--viewport-boards .exercise-board__layout:not(.exercise-board__layout--fill):not(.exercise-board__layout--full) .exercise-board__image,
  body.exercise-single-page .blogmoira-exercise-quiz-root--viewport-boards .exercise-board__layout:not(.exercise-board__layout--fill):not(.exercise-board__layout--full) .exercise-board__image {
    max-height: calc((var(--exercise-board-viewport-height, 100dvh) - 10px) / 2);
  }
  .under main .blogmoira-exercise-quiz-root--viewport-boards .exercise-board__layout:not(.exercise-board__layout--fill):not(.exercise-board__layout--full) .exercise-board__image-img,
  body.exercise-single-page .blogmoira-exercise-quiz-root--viewport-boards .exercise-board__layout:not(.exercise-board__layout--fill):not(.exercise-board__layout--full) .exercise-board__image-img {
    max-height: calc((var(--exercise-board-viewport-height, 100dvh) - 10px) / 2);
    width: 100%;
    object-fit: contain;
  }
  body.exercise-single-page .blogmoira-exercise-quiz-root--viewport-boards .exercise-board__layout--audio-only .exercise-board__context {
    max-height: none;
  }
  body.exercise-single-page .blogmoira-exercise-quiz-root--viewport-boards .exercise-board__layout--audio-only .exercise-board__panel,
  body.exercise-single-page .blogmoira-exercise-quiz-root--viewport-boards .exercise-board__layout--audio-only .exercise-audio-player {
    margin-bottom: 0;
  }
  body.exercise-single-page .blogmoira-exercise-quiz-root--viewport-boards .exercise-workspace {
    grid-template-columns: 1fr;
  }
  body.exercise-single-page:not(.exercise-nav-open) .blogmoira-exercise-quiz-root--viewport-boards .exercise-workspace__sidebar {
    display: none;
    max-height: none;
    height: auto;
  }
  .under main .exercise-toolbar {
    position: static;
    flex-direction: column;
    align-items: stretch;
  }
  .under main .exercise-toolbar__actions {
    justify-content: flex-end;
  }
}
@media (max-width: 767px) {
  .under main .exercise-single__header,
  .under main .exercise-board {
    padding: 20px;
  }
  .under main .exercise-single__stats {
    grid-template-columns: 1fr;
  }
  .under main .exercise-toolbar__actions {
    flex-direction: column;
    align-items: stretch;
  }
  .under main .exercise-toolbar__exit,
  .under main .exercise-submit-button--toolbar {
    width: 100%;
  }
  .under main .exercise-question-card[data-question-type="fill_blank"] .exercise-question-card__head,
  .under main .exercise-board__head,
  .under main .exercise-submit-bar {
    flex-direction: column;
    align-items: flex-start;
  }
}
/*==========================================================
                S T U D E N T   P O R T A L
==========================================================*/
.under main .blogmoira-student-portal {
  max-width: 1120px;
  margin: 30px auto;
  padding: 0 16px;
}
.under main .blogmoira-student-card {
  padding: 24px;
  border: 1px solid #e4e7f2;
  border-radius: 20px;
  background: #fff;
  box-shadow: 0 10px 28px rgba(15, 23, 42, 0.08);
}
.under main .blogmoira-student-card + .blogmoira-student-card {
  margin-top: 20px;
}
.under main .blogmoira-student-grid {
  display: grid;
  grid-template-columns: repeat(12, minmax(0, 1fr));
  gap: 18px;
}
.under main .blogmoira-student-grid > * {
  grid-column: span 12;
  min-width: 0;
}
.under main .blogmoira-student-grid--2 > * {
  grid-column: span 6;
}
.under main .blogmoira-student-heading {
  margin: 0 0 18px;
  color: var(--dark-blue);
  text-transform: initial;
}
.under main .blogmoira-student-subtitle {
  margin: 0 0 8px;
  color: var(--dark-blue);
  font-size: 13px;
  font-weight: 700;
  letter-spacing: 0.04em;
  text-transform: uppercase;
}
.under main .blogmoira-student-muted {
  color: #5f6684;
  font-size: 14px;
}
.under main .blogmoira-student-stats {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(160px, 1fr));
  gap: 14px;
}
.under main .blogmoira-student-stat {
  padding: 16px;
  border: 1px solid #edf0f6;
  border-radius: 16px;
  background: #f8f9fe;
}
.under main .blogmoira-student-stat strong {
  display: block;
  font-size: 28px;
  line-height: 1.2;
  color: var(--dark-blue);
}
.under main .blogmoira-student-stat strong.blogmoira-student-stat__duration {
  font-size: 22px;
  line-height: 1.35;
}
.under main .blogmoira-student-actions {
  display: flex;
  flex-wrap: wrap;
  gap: 12px;
  margin-top: 18px;
}
.under main .blogmoira-student-button {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  min-height: 46px;
  padding: 11px 22px 9px;
  border: 1px solid #d8deef;
  border-radius: 999px;
  background: #fff;
  color: var(--dark-blue);
  font-weight: 700;
  text-decoration: none;
  cursor: pointer;
  font-size: var(--mfont-size);
}
.under main .blogmoira-student-button--primary {
  border-color: var(--purple);
  background: var(--purple);
  color: #fff;
}
.under main .blogmoira-student-button--primary:hover {
  border-color: var(--dark-blue);
  background: var(--dark-blue);
  color: #fff;
}
.under main .blogmoira-student-form {
  display: grid;
  gap: 16px;
}
.under main .blogmoira-student-field label {
  display: flex;
  margin-bottom: 6px;
  font-weight: 700;
  color: var(--dark-blue);
  gap: 5px;
  align-items: center;
  font-size: var(--mfont-size);
}
.under main .blogmoira-student-field input {
  width: 100%;
  min-height: 46px;
  padding: 10px 14px;
  border: 1px solid #d8deef;
  border-radius: 12px;
  background: #fff;
  box-sizing: border-box;
}
.under main .blogmoira-student-field--checkbox {
  margin-top: 4px;
}
.under main .blogmoira-student-field--courses {
  grid-column: span 12;
}
.under main .blogmoira-student-course-list {
  display: grid;
  gap: 10px;
}
.under main .blogmoira-student-course-summary {
  margin: 0 0 16px;
}
.under main .blogmoira-student-checkbox {
  display: inline-flex;
  align-items: center;
  gap: 12px;
  margin: 0;
  font-weight: 600;
  color: var(--dark-blue);
  cursor: pointer;
}
.under main .blogmoira-student-checkbox input {
  width: 18px;
  min-width: 18px;
  height: 18px;
  min-height: 18px;
  margin: 0;
  padding: 0;
  border-radius: 4px;
  accent-color: #4c5cb8;
}
.under main .blogmoira-student-checkbox span {
  line-height: 1.4;
}
.under main .blogmoira-student-field small {
  display: block;
  margin-top: 6px;
  color: #6d7393;
}
.under main .blogmoira-student-notice {
  margin-bottom: 16px;
  padding: 12px 14px;
  border: 1px solid #d8deef;
  border-radius: 12px;
  background: #f8f9fe;
}
.under main .blogmoira-student-notice--success {
  border-color: #b7e4c7;
  background: #eefbf2;
  color: #236941;
}
.under main .blogmoira-student-notice--error {
  border-color: #f0b1b1;
  background: #fff2f2;
  color: #9d2525;
}
.under main .blogmoira-student-table {
  width: 100%;
  border-collapse: collapse;
}
.under main .blogmoira-student-table th,
.under main .blogmoira-student-table td {
  padding: 14px 12px;
  border-bottom: 1px solid var(--dark-blue);
  text-align: left;
  vertical-align: top;
}

.under main .blogmoira-student-table td.center {
  text-align: center;
}
.under main .blogmoira-student-table th {
  color: #fff;
  font-size: 14px;
  letter-spacing: 0.03em;
  text-transform: uppercase;
  text-align: center;
  padding: 11px 10px;
}
.under main .blogmoira-student-table a {
  color: #4c5cb8;
  font-weight: 700;
  text-decoration: none;
}
.under main .blogmoira-student-attempt-history {
  position: relative;
}
.under main .blogmoira-student-accuracy-chart-card__head {
  display: flex;
  flex-wrap: wrap;
  align-items: flex-start;
  justify-content: space-between;
  gap: 12px 16px;
  margin-bottom: 16px;
}
.under main .blogmoira-student-accuracy-chart-card__title {
  margin: 0;
  font-size: 22px;
  text-transform: initial;
}
.under main .blogmoira-student-accuracy-chart-card__filter {
  display: flex;
  align-items: center;
  gap: 8px;
  margin: 0;
}
.under main .blogmoira-student-accuracy-chart-card__select {
  min-width: 180px;
  min-height: 42px;
  padding: 8px 12px;
  border: 1px solid #d8deef;
  border-radius: 12px;
  background: #fff;
  color: var(--dark-blue);
  font-size: var(--mfont-size);
}
.blogmoira-student-accuracy-chart-card__canvas-wrap {
  position: relative;
  height: 360px;
  max-width: 100%;
}
.under main .blogmoira-student-accuracy-chart-card__empty,
.under main .blogmoira-student-accuracy-chart-card__note {
  margin: 0;
  font-size: 14px;
}
.under main .blogmoira-student-accuracy-chart-card__note {
  margin-top: 12px;
}
.wrap .blogmoira-student-accuracy-chart-card--admin {
  margin: 0 0 24px;
  padding: 18px 20px;
  border: 1px solid #e5e7eb;
  border-radius: 10px;
  background: #fff;
}
.wrap .blogmoira-student-accuracy-chart-card--admin .blogmoira-student-accuracy-chart-card__title {
  font-size: 18px;
  font-weight: 600;
}
.wrap .blogmoira-student-accuracy-chart-card--admin .blogmoira-student-muted {
  color: #6b7280;
}
.under main .blogmoira-student-attempt-history.is-loading::after {
  content: "";
  position: absolute;
  inset: 0;
  border-radius: 12px;
  background: rgba(255, 255, 255, 0.55);
  pointer-events: none;
}
.under main .blogmoira-student-history-pagination {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  justify-content: space-between;
  gap: 12px;
  margin-top: 18px;
}
.under main .blogmoira-student-history-pagination__summary {
  color: #5f6684;
  font-size: 14px;
}
.under main .blogmoira-student-history-pagination__nav {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  gap: 8px;
}
.under main .blogmoira-student-history-pagination__btn {
  min-width: 40px;
  min-height: 38px;
  padding: 6px 12px;
  border: 1px solid #d8deef;
  border-radius: 999px;
  background: #fff;
  color: var(--dark-blue);
  font-weight: 700;
  font-size: 14px;
  line-height: 1.2;
  cursor: pointer;
}
.under main .blogmoira-student-history-pagination__btn:hover:not(:disabled):not(.is-active) {
  border-color: var(--purple);
  color: var(--purple);
}
.under main .blogmoira-student-history-pagination__btn.is-active {
  border-color: var(--purple);
  background: var(--purple);
  color: #fff;
  cursor: default;
}
.under main .blogmoira-student-history-pagination__btn:disabled {
  opacity: 0.45;
  cursor: not-allowed;
}
.under main .blogmoira-student-history-pagination__ellipsis {
  color: #5f6684;
  padding: 0 2px;
}
.under main .blogmoira-student-homework-card .blogmoira-student-heading {
  margin-bottom: 14px;
}
.under main .blogmoira-student-homework-table-wrap {
  overflow-x: auto;
  -webkit-overflow-scrolling: touch;
}
.under main .blogmoira-student-homework-table {
  table-layout: fixed;
  width: 100%;
  min-width: 980px;
}
.under main .blogmoira-student-homework-table .blogmoira-student-homework-col--exercise {
  width: 28%;
}
.under main .blogmoira-student-homework-table .blogmoira-student-homework-col--deadline {
  width: 14%;
}
.under main .blogmoira-student-homework-table .blogmoira-student-homework-col--score {
  width: 9%;
}
.under main .blogmoira-student-homework-table .blogmoira-student-homework-col--accuracy {
  width: 13%;
}
.under main .blogmoira-student-homework-table .blogmoira-student-homework-col--time {
  width: 11%;
}
.under main .blogmoira-student-homework-table .blogmoira-student-homework-col--date {
  width: 12%;
}
.under main .blogmoira-student-homework-table .blogmoira-student-homework-col--status {
  width: 13%;
}
.under main .blogmoira-student-homework-table td:first-child {
  word-break: break-word;
}
.under main .blogmoira-student-homework-table th:not(:first-child):not(:nth-child(2)),
.under main .blogmoira-student-homework-table td:not(:first-child):not(.blogmoira-student-homework-table__deadline) {
  white-space: nowrap;
}
.under main .blogmoira-student-homework-table__deadline {
  white-space: normal;
  line-height: 1.35;
}
.under main .blogmoira-student-homework-table__deadline-date,
.under main .blogmoira-student-homework-table__deadline-time {
  display: block;
}
.under main .blogmoira-student-homework__status {
  display: inline-block;
  min-width: 108px;
  padding: 6px 10px 5px;
  border-radius: 999px;
  font-size: 14px;
  font-weight: 700;
  line-height: 1.3;
  text-align: center;
  white-space: nowrap;
}
.under main .blogmoira-student-homework__status--done {
  background: #d5f2e3;
  color: #1e7e34;
}
.under main .blogmoira-student-homework__status--pending {
  background: #ececec;
  color: #50575e;
}
.under main .blogmoira-student-homework__status--overdue {
  background: #d63638;
  color: #fff;
}
.under main .blogmoira-student-feedback {
  padding: 10px 12px;
  border: 1px solid #e4e7f2;
  border-radius: 12px;
  background: #f8f9fe;
  color: var(--dark-blue);
  min-width: 220px;
}
.under main .blogmoira-student-feedback--empty {
  color: #8a90ad;
  font-style: italic;
}
.under main .blogmoira-student-empty {
  margin: 0;
  color: #5f6684;
}
.under main .blogmoira-student-link {
  color: #4c5cb8;
  font-weight: 700;
  text-decoration: none;
  font-size: var(--mfont-size);
}
.under main .blogmoira-student-link:hover {
  text-decoration: underline;
}
@media (max-width: 767px) {
  .under main .blogmoira-student-grid--2 > * {
    grid-column: span 12;
  }
  .under main .blogmoira-student-stats {
    grid-template-columns: 1fr;
  }
  .under main .blogmoira-student-table:not(.blogmoira-student-homework-table) {
    display: block;
    overflow-x: auto;
  }
  .under main .blogmoira-student-homework-table {
    display: table;
  }
}

/* ===== Theory exercises (gắn vào page khoá học & single tu-hoc) ===== */
.theory-exercises {
  margin: 32px 0 12px;
  padding: 15px;
  border: 1px solid #e4e7f2;
  border-radius: 18px;
  background: #fafbff;
}
.theory-exercises__title {
  margin: 0 0 16px;
  font-size: 22px;
  color: var(--dark-blue);
}
.theory-exercises__intro {
  margin: -8px 0 20px;
  font-size: 14px;
  line-height: 1.5;
  color: #5f6684;
}
.theory-exercises__embeds {
  display: flex;
  flex-direction: column;
  gap: 28px;
}
.theory-exercises__embed-head {
  display: flex;
  flex-wrap: wrap;
  align-items: baseline;
  justify-content: space-between;
  gap: 12px;
  margin-bottom: 16px;
  padding-bottom: 12px;
  border-bottom: 1px solid #eef0f7;
}
.under main .theory-exercises .exercise-board{
  padding: 0;
  border: none;
  border-radius: 0;
  background: none;
  box-shadow: none;
  box-sizing: border-box;
  width: 100%;
  max-width: 100%;
  min-width: 0;
  overflow: visible;
}
.theory-exercises__embed-title {
  margin: 0;
  font-size: var(--mfont-size);
  font-weight: 700;
  color: var(--dark-blue);
}
.theory-exercises__embed-link {
  font-size: 14px;
  font-weight: 600;
  color: var(--red, #e31837);
  text-decoration: none;
  white-space: nowrap;
}
.theory-exercises__embed-link:hover {
  text-decoration: underline;
}
.theory-exercises .blogmoira-exercise-quiz-root {
  margin: 0;
}
@media (max-width: 600px) {
  .theory-exercises {
    padding: 16px;
  }
}

.under main .theory-exercises .exercise-board__layout{grid-template-columns: repeat(1,1fr);gap: 0}
.under main .theory-exercises .exercise-question-card{margin-top: 0;}
.under main .exercise-question-card__content.exercise-fill-blanks > p{font-weight: 400;line-height: 2.5;}

.inner_pad-0{padding: 0;}