@media (max-width: 900px) {
  /* Global */

  .container {
    width: min(100% - 28px, 890px);
  }

  body {
    overflow-x: hidden;
  }

  body.nav-open {
    overflow: hidden;
  }

  /* Header */

  .topbar {
    display: none;
  }

  .main-nav {
    height: auto;
    padding: 10px 0;
    position: relative;
    z-index: 40;
  }

  body.nav-open .main-nav {
    z-index: 80;
  }

  body.nav-open .main-nav::before {
    position: fixed;
    inset: 0;
    z-index: 40;
    background: rgba(24, 18, 15, .38);
    content: "";
  }

  .main-nav .container {
    position: relative;
    display: grid;
    grid-template-columns: auto 42px;
    gap: 12px;
    align-items: center;
  }

  .brand {
    zoom: .9;
  }

  .brand-eyebrow {
    margin-bottom: 3px;
    font-size: .56rem;
    letter-spacing: .16em;
  }

  .menu-toggle {
    position: relative;
    z-index: 60;
    display: inline-flex;
    width: 42px;
    height: 42px;
    align-items: center;
    justify-content: center;
    justify-self: end;
    color: var(--red);
    font-size: 1.1rem;
    background: #fff8ee;
    border: 1px solid #dfc5b3;
    border-radius: 4px;
  }

  .menu-toggle.is-open {
    color: #fff;
    background: var(--red);
    border-color: var(--red);
  }

  .main-nav .nav-links {
    position: fixed;
    top: 0;
    right: 0;
    bottom: 0;
    z-index: 50;
    display: none;
    width: min(82vw, 340px);
    flex-direction: column;
    align-items: stretch;
    gap: 0;
    padding: 76px 0 18px;
    margin: 0;
    overflow-y: auto;
    font-size: 1rem;
    background: #fff8ee;
    border-left: 1px solid #dfc5b3;
    border-radius: 0;
    box-shadow: 0 18px 36px rgba(72, 38, 24, .16);
  }

  .nav-open .main-nav .nav-links {
    display: flex;
  }

  .nav-links a {
    padding: 13px 16px;
    border-bottom: 1px solid #ead7c8;
  }

  .nav-links a:last-child {
    border-bottom: 0;
  }

  .nav-links .active::after {
    display: none;
  }

  .trial-btn {
    grid-column: 1 / -1;
    justify-self: stretch;
    min-height: 38px;
  }

  /* Home */

  .hero-copy {
    margin-left: 0;
  }

  .hero-background {
    object-fit: cover;
  }

  .hero .content {
    padding-bottom: 2rem;
  }

  .hero-copy {
    max-width: 460px;
    padding: 20px;
    border-radius: 6px;
  }

  .intro-hero {
    height: 320px;
  }

  .intro-hero .content {
    padding-bottom: 0;
  }

  .intro-hero .hero-copy {
    background: transparent;
    border: 0;
    backdrop-filter: none;
  }

  /* Shared layout */

  .courses .content,
  .posts .content,
  .feature-grid,
  .value-strip .content,
  .why-grid,
  .outcome-grid,
  .filter-bar .content,
  .tab-row,
  .category-row,
  .course-list-grid,
  .doc-grid,
  .video-grid,
  .topic-grid,
  .content-sidebar,
  .article-shell,
  .news-layout,
  .site-footer .container {
    grid-template-columns: 1fr 1fr;
  }

  .course-filter .content {
    grid-template-columns: 1fr;
  }

  .course-filter-row {
    grid-template-columns: 1fr;
  }

  .course-filter-label {
    min-height: 0;
    border-right: 0;
    border-bottom: 1px solid #e7ceb8;
  }

  .roadmap-steps {
    grid-template-columns: 1fr 1fr;
  }

  .roadmap-steps::before {
    display: none;
  }

  .roadmap-goal-layout {
    grid-template-columns: 1fr 1fr;
    gap: 28px;
  }

  .library-filter .content {
    grid-template-columns: 1fr 1fr;
  }

  .library-filter .filter-search,
  .library-filter .primary-btn {
    grid-column: 1 / -1;
  }

  .doc-grid,
  .video-grid,
  .topic-grid {
    grid-template-columns: 1fr 1fr;
  }

  .news-layout {
    grid-template-columns: 220px minmax(0, 1fr);
  }

  .news-sidebar-right {
    grid-column: 1 / -1;
    grid-template-columns: repeat(3, 1fr);
  }

  .article-item {
    grid-template-columns: 200px minmax(0, 1fr);
  }

  .article-shell {
    grid-template-columns: 1fr;
  }

  .article-sidebar {
    grid-template-columns: 1fr 1fr;
    position: static;
  }

  .footer-brand-lockup {
    width: 150px;
  }

  .footer-collapsible {
    padding: 0;
    border-top: 1px solid var(--footer-divider);
  }

  .footer-collapsible h3 {
    margin: 0;
  }

  .footer-collapse-toggle {
    min-height: 48px;
    cursor: pointer;
  }

  .footer-collapse-icon {
    display: inline-flex;
  }

  .footer-collapsible.is-open .footer-collapse-icon {
    transform: rotate(180deg);
  }

  .footer-collapse-panel {
    display: none;
    padding: 0 0 14px;
  }

  .footer-collapsible.is-open .footer-collapse-panel {
    display: block;
  }

  .footer-bottom .container {
    display: flex;
    grid-template-columns: none;
    flex-wrap: wrap;
  }

  /* Global modal/footer */

  .newsletter {
    grid-column: 1 / -1;
    max-width: 560px;
  }

  .trial-form-bottom {
    grid-template-columns: 1fr;
  }

  /* Home */

  .benefits {
    margin-top: 18px;
  }

  .benefits .content,
  .intro-values .content,
  .about .content {
    grid-template-columns: 1fr;
  }

  .stats .content {
    grid-template-columns: repeat(2, 1fr);
  }

  .benefits-decor-image {
    width: 54px;
    height: 54px;
  }

  .intro-values .benefit-item {
    display: grid;
    grid-template-columns: 40px minmax(0, 1fr);
    gap: 6px 14px;
    align-items: start;
    padding: 18px 16px;
    text-align: left;
    border-right: 0;
    border-bottom: 1px solid rgba(157, 74, 58, .25);
  }

  .intro-values .benefit-icon {
    grid-row: 1 / span 3;
    margin-bottom: 0;
  }

  .intro-values .benefit-item h3,
  .intro-values .benefit-item strong,
  .intro-values .benefit-item p {
    max-width: none;
    margin-right: 0;
    margin-left: 0;
  }

  .intro-values .benefit-item:last-child {
    border-bottom: 0;
  }

  .roadmap-outcomes .benefit-heading {
    padding-right: 50px;
    padding-left: 50px;
  }

  .roadmap-outcomes .content {
    padding: 12px 18px 4px;
  }

  .courses .content {
    grid-template-columns: repeat(2, minmax(0, 1fr));
  }

  .posts .content {
    grid-template-columns: repeat(2, minmax(0, 1fr));
  }

  .about {
    padding: 28px 0 18px;
  }

  .about-decor-image {
    right: 0;
    height: 110px;
    opacity: .65;
  }

  .about-image img {
    position: static;
    width: 100%;
    max-width: 520px;
    height: auto;
    padding-right: 0;
    margin: 0 auto;
    border-radius: 6px;
  }

  .split-layout,
  .detail-hero .content {
    grid-template-columns: 1fr;
  }

  .course-detail-media {
    max-width: 620px;
    margin: 0 auto;
  }

  .course-detail-content .content-sidebar {
    padding: 18px;
  }

  .detail-sidebar {
    grid-template-columns: 1fr 1fr;
  }

  .intro-about .split-layout {
    grid-template-columns: 1fr;
  }

  .intro-about .about-image img {
    position: static;
    width: 100%;
    max-width: 520px;
    height: auto;
    padding-right: 0;
    margin: 0 auto;
    transform: none;
    border-radius: 6px;
  }

  .intro-about .about-image::before,
  .intro-about .about-image::after {
    display: none;
  }

  .article-item {
    grid-template-columns: 180px 1fr;
  }

  .article-item .plain-btn {
    grid-column: 2;
    justify-self: start;
  }

  .courses .foot,
  .posts .foot {
    position: static;
    display: flex;
    justify-content: flex-start;
    margin-top: 18px;
  }
}

@media (max-width: 620px) {
  /* Global */

  .container {
    width: min(100% - 24px, 596px);
  }

  /* Header */

  .main-nav .container {
    grid-template-columns: auto 40px;
    gap: 10px;
  }

  .brand-eyebrow {
    font-size: .625rem;
    letter-spacing: .08em;
  }

  .menu-toggle {
    width: 40px;
    height: 40px;
  }

  .trial-btn {
    min-height: 36px;
  }

  /* Home */

  .hero {
    height: auto;
    min-height: 430px;
  }

  .hero .content {
    min-height: 430px;
    align-items: flex-end;
    justify-content: flex-start;
    padding: 88px 0 32px;
  }

  .hero-copy {
    width: 100%;
    padding: 16px;
    transform: none;
  }

  .hero h1 {
    margin: .8rem 0;
    font-size: 2rem;
  }

  .hero p {
    width: min(100%, 370px);
    margin-bottom: 1.2rem;
    font-size: .98rem;
  }

  .eyebrow {
    height: 27px;
    padding: 0 16px;
    font-size: 1rem;
  }

  .hero .primary-btn {
    width: 100%;
    min-height: 42px;
    font-size: 1.05rem;
  }

  .intro-hero {
    height: 300px;
  }

  .intro-hero .content {
    min-height: 300px;
    align-items: center;
    justify-content: center;
    padding: 0;
  }

  .intro-hero .hero-copy {
    padding: 0 10px;
    text-align: center;
    background: transparent;
    border: 0;
  }

  /* Shared layout */

  .benefits .content,
  .courses .content,
  .posts .content,
  .stats .content,
  .about .content,
  .feature-grid,
  .value-strip .content,
  .why-grid,
  .outcome-grid,
  .filter-bar .content,
  .tab-row,
  .category-row,
  .course-list-grid,
  .doc-grid,
  .video-grid,
  .topic-grid,
  .content-sidebar,
  .article-shell,
  .news-layout,
  .info-row,
  .course-seo-grid,
  .review-grid,
  .site-footer .container {
    grid-template-columns: 1fr;
  }

  .filter-bar {
    padding: 14px 12px;
  }

  .filter-title {
    gap: 12px;
    white-space: normal;
  }

  .course-filter-head {
    align-items: flex-start;
    flex-direction: row;
    gap: 8px 10px;
    margin-bottom: 10px;
  }

  .course-filter-actions {
    width: auto;
    align-items: center;
    flex-direction: row-reverse;
    justify-content: flex-end;
    margin-left: auto;
  }

  .course-filter-toggle {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    min-height: 28px;
    padding: 0 10px;
    font-size: .78rem;
    box-shadow: none;
  }

  .course-filter-toggle span {
    margin-left: 4px;
    font-size: .72rem;
  }

  .course-filter .icon-circle {
    width: 32px;
    height: 32px;
    flex-basis: 32px;
    font-size: .9rem;
  }

  .course-filter {
    position: relative;
    padding: 10px 12px 14px;
    border-radius: 0;
    background: rgba(255, 250, 240, .96);
    box-shadow: 0 10px 28px rgba(96, 43, 22, .06);
  }

  .course-filter .content {
    gap: 6px;
  }

  .course-filter .filter-title {
    gap: 10px;
    font-size: 1rem;
  }

  .course-filter-options {
    display: flex;
    flex-wrap: nowrap;
    overflow-x: auto;
    gap: 7px;
    padding: 8px;
    scrollbar-width: thin;
  }

  .course-filter-option {
    width: auto;
    min-width: max-content;
    padding: 0 12px;
    white-space: nowrap;
  }

  .course-filter-section {
    position: sticky;
    top: 0;
    z-index: 34;
    padding-top: 0;
    padding-bottom: 18px;
    background: transparent;
  }

  .course-filter-section .container {
    width: 100%;
  }

  .page-template-page-khoa-hoc .site-main {
    overflow: visible;
  }

  .course-filter.is-collapsed {
    padding-bottom: 8px;
  }

  .course-filter.is-collapsed .content {
    display: none;
  }

  .course-filter.is-collapsed .course-filter-head {
    margin-bottom: 0;
  }

  .course-filter:not(.is-collapsed) .course-filter-actions {
    position: absolute;
    right: 12px;
    bottom: 12px;
    width: auto;
    margin-top: 0;
  }

  .course-filter:not(.is-collapsed) {
    padding-bottom: 50px;
  }

  .roadmap-steps,
  .roadmap-goal-layout {
    grid-template-columns: 1fr;
  }

  .roadmap-step {
    text-align: left;
  }

  .roadmap-step-icon {
    justify-content: flex-start;
  }

  .roadmap-step strong {
    justify-self: start;
  }

  .roadmap-goal-image img {
    height: 280px;
  }

  .roadmap-goal-card {
    padding: 22px 18px;
  }

  .category-row,
  .library-filter .content,
  .doc-grid,
  .video-grid,
  .topic-grid,
  .news-layout,
  .news-sidebar-right,
  .article-item,
  .popular-item,
  .related-item {
    grid-template-columns: 1fr;
  }

  .library-heading {
    align-items: flex-start;
    flex-direction: column;
  }

  .library-filter .filter-search,
  .library-filter .primary-btn,
  .article-item .plain-btn {
    grid-column: auto;
  }

  .article-item img,
  .popular-item img,
  .related-item img {
    width: 100%;
  }

  .article-sidebar {
    grid-template-columns: 1fr;
    position: static;
  }

  .course-detail-media figcaption,
  .detail-sidebar {
    grid-template-columns: 1fr;
  }

  .course-detail-content .container {
    border-right: 0;
    border-left: 0;
    border-radius: 0;
  }

  .course-detail-content .content-sidebar {
    padding: 16px 0;
  }

  .lesson-list {
    padding-left: 18px;
  }

  .lesson-list li {
    grid-template-columns: 1fr auto;
  }

  .lesson-list li span {
    grid-column: 1 / -1;
  }

  .course-seo-grid article {
    grid-template-columns: 42px 1fr;
    padding: 14px;
  }

  .course-seo-grid .icon-circle {
    width: 42px;
    height: 42px;
  }

  .footer-brand-lockup {
    width: 136px;
  }

  .site-footer .container {
    row-gap: 1.75rem;
  }

  .footer-brand {
    max-width: none;
  }

  .newsletter {
    max-width: none;
  }

  .footer-bottom .container {
    align-items: flex-start;
    flex-direction: column;
  }

  .footer-bottom nav {
    align-items: flex-start;
    flex-direction: column;
    gap: .75rem;
  }

  .trial-modal {
    align-items: flex-end;
    padding: 12px;
  }

  .trial-modal-dialog {
    max-height: 92vh;
  }

  .trial-modal-intro,
  .trial-modal-form {
    padding-right: 20px;
    padding-left: 20px;
  }

  .trial-modal-intro h2 {
    padding-right: 34px;
    font-size: 1.45rem;
  }

  .trial-form-grid {
    grid-template-columns: 1fr;
  }

  .trial-form-bottom {
    grid-template-columns: 1fr;
  }

  /* Home */

  .benefits {
    padding: 0 0 12px;
    margin-top: 14px;
  }

  .benefits .container {
    padding: 8px;
  }

  .roadmap-outcomes .benefit-heading {
    padding-right: 36px;
    padding-left: 36px;
  }

  .roadmap-outcomes .benefit-heading h2 {
    font-size: 1rem;
  }

  .benefits-decor-image {
    width: 42px;
    height: 42px;
  }

  .benefit-item {
    padding: 18px 22px;
  }

  .courses,
  .posts {
    padding: 18px 0;
  }

  .courses .head,
  .posts .head {
    height: auto;
    min-height: 54px;
    padding-right: 0;
  }

  .head-image-before {
    max-width: 42px;
    max-height: 54px;
  }

  .head-image-after {
    max-width: 58px;
  }

  .courses .content,
  .posts .content {
    gap: 14px;
    margin-top: 12px;
  }

  .course-card,
  .post-card {
    border-radius: 6px;
  }

  .card-body,
  .post-card .card-body {
    padding: 12px;
  }

  .stats {
    padding: 16px 0;
  }

  .stat-item {
    grid-template-columns: 48px 1fr;
    gap: 12px;
    padding: 14px 0;
  }

  .stat-icon {
    width: 48px;
    height: 48px;
  }

  .stat-item strong {
    font-size: 1.8rem;
  }

  .about {
    padding: 22px 0 16px;
  }

  .about-decor-image {
    height: 76px;
    opacity: .5;
  }

  .about-copy .title {
    margin-bottom: 10px;
  }

  .about-panel {
    padding: 14px;
  }

  .page-hero {
    height: 360px;
    background-size: 260px auto, 300px auto, auto, auto;
  }

  .cta-band .content {
    align-items: flex-start;
    flex-direction: column;
  }

  .cta-band-image {
    width: 120px;
    max-width: 34vw;
    opacity: .22;
  }

  .cta-band-image-left {
    left: -48px;
  }

  .cta-band-image-right {
    right: -48px;
  }

  .article-item,
  .popular-item,
  .related-item {
    grid-template-columns: 1fr;
  }

  .article-item img,
  .popular-item img,
  .related-item img {
    width: 100%;
  }

  .tabs-line {
    gap: 18px;
    overflow-x: auto;
  }

  .benefit-item,
  .stat-item,
  .value-card {
    border-right: 0;
    border-bottom: 1px solid rgba(157, 74, 58, .25);
  }

  .value-card::after {
    display: none;
  }

  .courses .title > h2,
  .posts .title > h2 {
    font-size: 1.25rem;
  }
}

@media (min-width: 901px) {
  /* Header */

  .menu-toggle {
    display: none;
  }
}