:root {
    --learn-navy: #07294d;
    --learn-blue: #0f4c81;
    --learn-blue-soft: #eaf3fb;
    --learn-teal: #138f8b;
    --learn-gold: #ffc600;
    --learn-ink: #1b2738;
    --learn-muted: #65758b;
    --learn-line: #e3e9f0;
    --learn-surface: #ffffff;
    --learn-soft: #f5f7fa;
    --learn-shadow: 0 14px 36px rgba(7, 41, 77, 0.09);
    --learn-radius: 8px;
}

* {
    box-sizing: border-box;
}

html {
    scroll-behavior: smooth;
}

body {
    background: var(--learn-surface);
    color: var(--learn-ink);
    font-family: "Segoe UI", Arial, Helvetica, sans-serif;
    margin: 0;
}

a {
    transition: color 0.2s ease, background 0.2s ease, border-color 0.2s ease,
        box-shadow 0.2s ease, transform 0.2s ease;
}

.dsc-wrap,
.met-course-page .wrap {
    margin: 0 auto;
    max-width: 1180px;
    padding-left: 20px;
    padding-right: 20px;
}

.dsc-top {
    background: var(--learn-navy);
    color: #dbe7f3;
    font-size: 13px;
}

.dsc-top .dsc-wrap {
    align-items: center;
    display: flex;
    justify-content: space-between;
    min-height: 40px;
}

.dsc-top a {
    color: #ffffff;
    text-decoration: none;
}

.dsc-header {
    background: #ffffff;
    border-bottom: 1px solid var(--learn-line);
    box-shadow: 0 4px 16px rgba(7, 41, 77, 0.04);
    position: relative;
    z-index: 20;
}

.dsc-header .dsc-wrap {
    align-items: center;
    display: flex;
    min-height: 84px;
}

.dsc-brand {
    align-items: center;
    color: var(--learn-navy);
    display: flex;
    font-size: 22px;
    font-weight: 800;
    gap: 12px;
    text-decoration: none;
}

.dsc-brand-mark {
    align-items: center;
    background: var(--learn-navy);
    border-radius: 6px;
    box-shadow: 0 8px 18px rgba(7, 41, 77, 0.2);
    color: #ffffff;
    display: flex;
    font-size: 14px;
    font-weight: 900;
    height: 46px;
    justify-content: center;
    letter-spacing: 0.8px;
    width: 50px;
}

.dsc-brand small {
    color: var(--learn-muted);
    display: block;
    font-size: 10px;
    font-weight: 700;
    letter-spacing: 1.25px;
    margin-top: 3px;
    text-transform: uppercase;
}

.dsc-nav {
    align-items: center;
    display: flex;
    gap: 28px;
    margin-left: auto;
}

.dsc-nav a {
    color: #25364a;
    font-size: 14px;
    font-weight: 700;
    text-decoration: none;
}

.dsc-nav a:hover {
    color: var(--learn-blue);
}

.dsc-nav .dsc-login {
    background: var(--learn-gold);
    border-radius: 4px;
    color: var(--learn-navy);
    padding: 12px 18px;
}

.dsc-nav .dsc-login:hover {
    background: #eab700;
    box-shadow: 0 8px 18px rgba(255, 198, 0, 0.24);
    transform: translateY(-1px);
}

.dsc-footer {
    background: var(--learn-navy);
    color: #b9c8d8;
    padding: 52px 0 28px;
}

.dsc-footer-grid {
    display: grid;
    gap: 42px;
    grid-template-columns: 1.5fr 1fr 1fr;
}

.dsc-footer h3 {
    color: #ffffff;
    font-size: 18px;
    margin: 0 0 15px;
}

.dsc-footer p {
    line-height: 1.75;
    margin: 0;
}

.dsc-footer a {
    color: #dbe7f3;
    display: block;
    margin: 9px 0;
    text-decoration: none;
}

.dsc-footer a:hover {
    color: var(--learn-gold);
}

.dsc-copy {
    border-top: 1px solid rgba(255, 255, 255, 0.13);
    font-size: 12px;
    margin-top: 36px;
    padding-top: 22px;
}

/* Learning landing page */
.dsc-home {
    background: #ffffff;
}

.dsc-hero {
    background:
        linear-gradient(105deg, rgba(7, 41, 77, 0.98), rgba(15, 76, 129, 0.92)),
        radial-gradient(circle at 85% 15%, #159b96, transparent 40%);
    color: #ffffff;
    min-height: 510px;
    overflow: hidden;
    padding: 86px 0 94px;
    position: relative;
}

.dsc-hero::before {
    background-image:
        linear-gradient(rgba(255, 255, 255, 0.035) 1px, transparent 1px),
        linear-gradient(90deg, rgba(255, 255, 255, 0.035) 1px, transparent 1px);
    background-size: 38px 38px;
    content: "";
    inset: 0;
    position: absolute;
}

.dsc-hero::after {
    border: 72px solid rgba(255, 255, 255, 0.045);
    border-radius: 50%;
    content: "";
    height: 430px;
    position: absolute;
    right: -130px;
    top: -130px;
    width: 430px;
}

.dsc-hero-grid {
    align-items: center;
    display: grid;
    gap: 58px;
    grid-template-columns: minmax(0, 1.3fr) minmax(280px, 0.7fr);
    position: relative;
    z-index: 2;
}

.dsc-eyebrow {
    color: var(--learn-gold);
    font-size: 12px;
    font-weight: 900;
    letter-spacing: 1.5px;
    text-transform: uppercase;
}

.dsc-hero h1 {
    font-size: clamp(40px, 5vw, 58px);
    font-weight: 800;
    letter-spacing: -1.4px;
    line-height: 1.08;
    margin: 16px 0 20px;
    max-width: 720px;
}

.dsc-hero p {
    color: #d9e7f5;
    font-size: 18px;
    line-height: 1.75;
    margin: 0;
    max-width: 680px;
}

.dsc-search {
    background: #ffffff;
    border-radius: 6px;
    box-shadow: 0 18px 45px rgba(0, 0, 0, 0.24);
    display: flex;
    margin-top: 32px;
    max-width: 660px;
    padding: 7px;
}

.dsc-search input {
    border: 0;
    color: #334155;
    flex: 1;
    font-size: 15px;
    min-width: 0;
    outline: 0;
    padding: 13px 15px;
}

.dsc-search a {
    align-items: center;
    background: var(--learn-gold);
    border-radius: 4px;
    color: var(--learn-navy);
    display: flex;
    font-size: 14px;
    font-weight: 900;
    padding: 13px 23px;
    text-decoration: none;
    white-space: nowrap;
}

.dsc-search a:hover {
    background: #eab700;
}

.dsc-hero-card {
    backdrop-filter: blur(8px);
    background: rgba(255, 255, 255, 0.1);
    border: 1px solid rgba(255, 255, 255, 0.2);
    border-radius: var(--learn-radius);
    box-shadow: 0 22px 45px rgba(0, 0, 0, 0.15);
    padding: 28px;
}

.dsc-hero-card h3 {
    font-size: 21px;
    margin: 0 0 18px;
}

.dsc-hero-card-item {
    align-items: center;
    background: rgba(255, 255, 255, 0.09);
    border: 1px solid rgba(255, 255, 255, 0.08);
    border-radius: 6px;
    display: flex;
    gap: 13px;
    margin-top: 10px;
    padding: 13px;
}

.dsc-hero-card-icon {
    align-items: center;
    background: var(--learn-gold);
    border-radius: 50%;
    color: var(--learn-navy);
    display: flex;
    flex: 0 0 38px;
    font-weight: 900;
    height: 38px;
    justify-content: center;
}

.dsc-stats {
    background: #ffffff;
    border-radius: var(--learn-radius);
    box-shadow: var(--learn-shadow);
    margin: -46px auto 0;
    max-width: 1040px;
    overflow: hidden;
    position: relative;
    z-index: 4;
}

.dsc-stats-grid {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
}

.dsc-stat {
    border-right: 1px solid var(--learn-line);
    padding: 29px;
    text-align: center;
}

.dsc-stat:last-child {
    border-right: 0;
}

.dsc-stat strong {
    color: var(--learn-blue);
    display: block;
    font-size: 32px;
    font-weight: 800;
}

.dsc-stat span {
    color: var(--learn-muted);
    font-size: 12px;
    font-weight: 800;
    letter-spacing: 0.4px;
    text-transform: uppercase;
}

.dsc-paths {
    padding: 88px 0 62px;
}

.dsc-section-head {
    text-align: center;
}

.dsc-section-head span {
    color: var(--learn-teal);
    font-size: 12px;
    font-weight: 900;
    letter-spacing: 1.2px;
    text-transform: uppercase;
}

.dsc-section-head h2,
.dsc-zone-head h2 {
    color: var(--learn-navy);
    font-size: clamp(30px, 4vw, 38px);
    font-weight: 800;
    margin: 10px 0;
}

.dsc-section-head p {
    color: var(--learn-muted);
    line-height: 1.75;
    margin: 0 auto;
    max-width: 670px;
}

.dsc-path-grid {
    display: grid;
    gap: 20px;
    grid-template-columns: repeat(4, 1fr);
    margin-top: 36px;
}

.dsc-path-card {
    background: #ffffff;
    border: 1px solid var(--learn-line);
    border-radius: var(--learn-radius);
    box-shadow: 0 10px 28px rgba(7, 41, 77, 0.06);
    padding: 25px;
}

.dsc-path-card:hover {
    border-color: rgba(15, 76, 129, 0.25);
    box-shadow: var(--learn-shadow);
    transform: translateY(-3px);
}

.dsc-path-icon {
    align-items: center;
    background: var(--learn-blue-soft);
    border-radius: 6px;
    color: var(--learn-blue);
    display: flex;
    font-size: 16px;
    font-weight: 900;
    height: 48px;
    justify-content: center;
    width: 48px;
}

.dsc-path-card h3 {
    color: var(--learn-navy);
    font-size: 17px;
    margin: 17px 0 8px;
}

.dsc-path-card p {
    color: var(--learn-muted);
    font-size: 14px;
    line-height: 1.65;
    margin: 0;
}

.dsc-zone {
    background: var(--learn-soft);
    padding: 78px 0 92px;
}

.dsc-zone-head {
    align-items: flex-end;
    display: flex;
    gap: 30px;
    justify-content: space-between;
    margin-bottom: 30px;
}

.dsc-zone-head p {
    color: var(--learn-muted);
    line-height: 1.65;
    margin: 0;
    max-width: 520px;
}

.dsc-course-grid {
    display: grid;
    gap: 24px;
    grid-template-columns: repeat(3, minmax(0, 1fr));
}

.dsc-course {
    background: #ffffff;
    border: 1px solid var(--learn-line);
    border-radius: var(--learn-radius);
    box-shadow: 0 10px 28px rgba(7, 41, 77, 0.065);
    color: var(--learn-ink);
    display: flex;
    flex-direction: column;
    overflow: hidden;
    text-decoration: none;
}

.dsc-course:hover {
    border-color: rgba(15, 76, 129, 0.26);
    box-shadow: 0 20px 42px rgba(7, 41, 77, 0.13);
    transform: translateY(-5px);
}

.dsc-course-cover {
    align-items: center;
    background:
        linear-gradient(135deg, rgba(7, 41, 77, 0.96), rgba(19, 143, 139, 0.86)),
        repeating-linear-gradient(45deg, rgba(255, 255, 255, 0.04) 0 2px, transparent 2px 12px);
    color: #ffffff;
    display: flex;
    height: 190px;
    justify-content: center;
    overflow: hidden;
    position: relative;
}

.dsc-course-cover::after {
    border: 35px solid rgba(255, 255, 255, 0.06);
    border-radius: 50%;
    content: "";
    height: 180px;
    position: absolute;
    right: -50px;
    top: -55px;
    width: 180px;
}

.dsc-course-cover span {
    font-size: 52px;
    font-weight: 800;
    letter-spacing: -2px;
    position: relative;
    z-index: 1;
}

.dsc-free {
    background: var(--learn-gold);
    border-radius: 3px;
    color: var(--learn-navy);
    font-size: 11px;
    font-weight: 900;
    left: 16px;
    padding: 7px 10px;
    position: absolute;
    text-transform: uppercase;
    top: 16px;
    z-index: 2;
}

.dsc-course-body {
    display: flex;
    flex: 1;
    flex-direction: column;
    padding: 23px;
}

.dsc-course-body small {
    color: var(--learn-teal);
    font-size: 11px;
    font-weight: 900;
    letter-spacing: 0.5px;
    text-transform: uppercase;
}

.dsc-course-body h3 {
    color: var(--learn-navy);
    font-size: 20px;
    line-height: 1.35;
    margin: 10px 0;
}

.dsc-course-body p {
    color: var(--learn-muted);
    line-height: 1.65;
    margin: 0 0 20px;
}

.dsc-course-meta {
    border-top: 1px solid var(--learn-line);
    color: #52647a;
    display: flex;
    font-size: 12px;
    font-weight: 800;
    justify-content: space-between;
    margin-top: auto;
    padding-top: 16px;
}

/* Course page */
.met-course-page {
    background: var(--learn-soft);
    color: var(--learn-ink);
    padding-bottom: 82px;
}

.met-course-banner {
    background:
        linear-gradient(120deg, rgba(7, 41, 77, 0.98), rgba(15, 76, 129, 0.92)),
        radial-gradient(circle at 86% 20%, #159b96, transparent 38%);
    color: #ffffff;
    overflow: hidden;
    padding: 64px 0 68px;
    position: relative;
}

.met-course-banner::after {
    border: 64px solid rgba(255, 255, 255, 0.05);
    border-radius: 50%;
    content: "";
    height: 340px;
    position: absolute;
    right: -80px;
    top: -120px;
    width: 340px;
}

.met-course-banner .wrap {
    position: relative;
    z-index: 1;
}

.met-crumb {
    color: #c6d9ea;
    font-size: 13px;
    margin-bottom: 17px;
}

.met-crumb a {
    color: #ffffff;
    text-decoration: none;
}

.met-course-banner h1 {
    font-size: clamp(34px, 5vw, 48px);
    font-weight: 800;
    line-height: 1.15;
    margin: 0 0 15px;
}

.met-course-banner p {
    color: #dbe8f4;
    font-size: 17px;
    line-height: 1.75;
    margin: 0;
    max-width: 780px;
}

.met-course-author {
    align-items: center;
    display: flex;
    gap: 14px;
    margin-top: 26px;
}

.met-course-avatar {
    align-items: center;
    background: var(--learn-gold);
    border-radius: 50%;
    color: var(--learn-navy);
    display: flex;
    font-weight: 900;
    height: 48px;
    justify-content: center;
    width: 48px;
}

.met-course-author small {
    color: #bfd1e2;
}

.met-course-layout {
    display: grid;
    gap: 30px;
    grid-template-columns: minmax(0, 1fr) 350px;
    padding-top: 40px;
}

.met-panel {
    background: #ffffff;
    border: 1px solid var(--learn-line);
    border-radius: var(--learn-radius);
    box-shadow: var(--learn-shadow);
    padding: 30px;
}

.met-panel h2 {
    color: var(--learn-navy);
    font-size: 25px;
    font-weight: 800;
    margin: 0 0 19px;
}

.met-overview {
    color: #475b70;
    font-size: 16px;
    line-height: 1.82;
}

.met-overview h2,
.met-overview h3 {
    color: var(--learn-navy);
}

.met-course-stats {
    display: grid;
    gap: 10px;
    grid-template-columns: repeat(3, 1fr);
    margin-bottom: 24px;
}

.met-course-stat {
    background: var(--learn-blue-soft);
    border-radius: 6px;
    padding: 15px 8px;
    text-align: center;
}

.met-course-stat strong {
    color: var(--learn-blue);
    display: block;
    font-size: 21px;
}

.met-course-stat span {
    color: var(--learn-muted);
    font-size: 10px;
    font-weight: 900;
    text-transform: uppercase;
}

.met-curriculum {
    margin-top: 28px;
}

.met-section {
    border: 1px solid var(--learn-line);
    border-radius: 6px;
    margin-bottom: 12px;
    overflow: hidden;
}

.met-section summary {
    background: #f7fafc;
    color: var(--learn-navy);
    cursor: pointer;
    font-size: 16px;
    font-weight: 800;
    list-style: none;
    padding: 17px 19px;
}

.met-section summary::-webkit-details-marker {
    display: none;
}

.met-section summary::after {
    color: var(--learn-blue);
    content: "+";
    float: right;
    font-size: 20px;
    line-height: 14px;
    margin-left: 12px;
}

.met-section[open] summary::after {
    content: "-";
}

.met-section-count {
    color: var(--learn-muted);
    float: right;
    font-size: 11px;
    margin-right: 12px;
    text-transform: uppercase;
}

.met-lesson-row {
    align-items: center;
    border-top: 1px solid #edf1f5;
    color: #34475b;
    display: flex;
    gap: 12px;
    padding: 14px 18px;
    text-decoration: none;
}

.met-lesson-row:hover {
    background: #f8fbfd;
    color: var(--learn-blue);
}

.met-lesson-number {
    align-items: center;
    background: var(--learn-blue-soft);
    border-radius: 50%;
    color: var(--learn-blue);
    display: flex;
    flex: 0 0 35px;
    font-size: 11px;
    font-weight: 900;
    height: 35px;
    justify-content: center;
}

.met-lesson-title {
    flex: 1;
}

.met-lesson-duration {
    color: #8a98a9;
    font-size: 12px;
}

.met-start-card {
    position: sticky;
    top: 24px;
}

.met-start-card .met-btn {
    background: var(--learn-gold);
    border-radius: 4px;
    color: var(--learn-navy);
    display: block;
    font-weight: 900;
    padding: 14px;
    text-align: center;
    text-decoration: none;
}

.met-start-card .met-btn:hover {
    background: #eab700;
    transform: translateY(-1px);
}

.met-start-card ul {
    list-style: none;
    margin: 22px 0 0;
    padding: 0;
}

.met-start-card li {
    border-bottom: 1px solid #edf1f5;
    color: #516478;
    padding: 12px 0;
}

.met-start-card i {
    color: var(--learn-teal);
    margin-right: 8px;
}

/* Lesson page */
.met-lesson-page {
    background: var(--learn-soft);
    color: var(--learn-ink);
    min-height: 760px;
}

.met-lesson-shell {
    display: grid;
    grid-template-columns: 330px minmax(0, 1fr);
    margin: 0 auto;
    max-width: 1440px;
}

.met-lesson-sidebar {
    background: #ffffff;
    border-right: 1px solid var(--learn-line);
    min-height: 760px;
    padding: 28px 20px;
}

.met-lesson-back {
    color: var(--learn-blue);
    display: block;
    font-size: 12px;
    font-weight: 900;
    margin-bottom: 18px;
    text-decoration: none;
    text-transform: uppercase;
}

.met-lesson-sidebar h2 {
    color: var(--learn-navy);
    font-size: 20px;
    font-weight: 800;
    line-height: 1.35;
    margin: 0 0 25px;
}

.met-side-section {
    margin-bottom: 20px;
}

.met-side-section strong {
    color: #65758b;
    display: block;
    font-size: 11px;
    letter-spacing: 0.6px;
    margin-bottom: 8px;
    text-transform: uppercase;
}

.met-side-lesson {
    border-left: 3px solid transparent;
    border-radius: 0 5px 5px 0;
    color: #4d6074;
    display: block;
    font-size: 14px;
    line-height: 1.4;
    margin-bottom: 4px;
    padding: 10px 11px;
    text-decoration: none;
}

.met-side-lesson:hover,
.met-side-lesson.active {
    background: var(--learn-blue-soft);
    border-left-color: var(--learn-blue);
    color: var(--learn-blue);
}

.met-side-number {
    font-weight: 900;
    margin-right: 6px;
}

.met-lesson-main {
    min-width: 0;
    padding: 40px;
}

.met-lesson-card {
    background: #ffffff;
    border: 1px solid var(--learn-line);
    border-radius: var(--learn-radius);
    box-shadow: var(--learn-shadow);
    margin: 0 auto;
    max-width: 920px;
    padding: 44px;
}

.met-lesson-kicker {
    color: var(--learn-teal);
    font-size: 11px;
    font-weight: 900;
    letter-spacing: 1px;
    text-transform: uppercase;
}

.met-lesson-card h1 {
    color: var(--learn-navy);
    font-size: clamp(29px, 4vw, 38px);
    font-weight: 800;
    line-height: 1.22;
    margin: 11px 0 26px;
}

.met-lesson-content {
    color: #34475b;
    font-size: 17px;
    line-height: 1.85;
}

.met-summary-notes {
    margin-top: 22px;
}

.met-summary-notes > h2 {
    border-bottom: 1px solid var(--learn-line);
    color: var(--learn-navy);
    font-size: 24px;
    margin: 0 0 20px;
    padding-bottom: 14px;
}

.met-summary-translation-status {
    color: #64748b;
    font-size: 12px;
    font-weight: 700;
    margin-left: 4px;
}

.met-summary-translation-status:not(:empty) {
    flex-basis: 100%;
}

.met-lesson-content h2 {
    color: var(--learn-navy);
    font-size: 27px;
    margin: 34px 0 13px;
}

.met-lesson-content h3,
.met-lesson-content h4 {
    color: var(--learn-navy);
    margin-top: 28px;
}

.met-lesson-content a {
    color: var(--learn-blue);
}

.met-lesson-content img,
.met-lesson-content iframe,
.met-lesson-content video {
    border-radius: 6px;
    height: auto;
    max-width: 100%;
}

.met-lesson-content blockquote {
    background: #f7fafc;
    border-left: 4px solid var(--learn-blue);
    margin: 22px 0;
    padding: 15px 18px;
}

.met-lesson-content table {
    border-collapse: collapse;
    display: block;
    margin: 22px 0;
    overflow-x: auto;
    width: 100%;
}

.met-lesson-content td,
.met-lesson-content th {
    border: 1px solid #cfd9e4;
    padding: 10px 12px;
}

.met-lesson-content th {
    background: #eef4f9;
    color: var(--learn-navy);
}

.met-note {
    background: #fff9df;
    border-left: 4px solid var(--learn-gold);
    border-radius: 4px;
    padding: 16px;
}

/* Rich lesson content uploaded from the Learning admin */
.edu-concept-summary {
    margin: 0 0 34px;
}

.edu-concept-summary + .edu-concept-summary {
    border-top: 1px solid var(--learn-line);
    padding-top: 34px;
}

.tet-translate-container {
    align-items: center;
    background: #f7fafc;
    border: 1px solid var(--learn-line);
    border-radius: 6px;
    display: flex;
    flex-wrap: wrap;
    gap: 12px;
    margin-bottom: 20px;
    padding: 12px 15px;
}

.translate-label {
    color: var(--learn-navy);
    font-size: 12px;
    font-weight: 900;
    letter-spacing: 0.35px;
    text-transform: uppercase;
}

.edu-intro-note {
    background: linear-gradient(135deg, #edf5fc, #f8fbfd);
    border-left: 4px solid var(--learn-blue);
    border-radius: 5px;
    color: #42566b;
    margin: 0 0 24px;
    padding: 17px 19px;
}

.edu-intro-note p {
    margin: 0;
}

.tet-accordion > details {
    background: #ffffff;
    border: 1px solid var(--learn-line);
    border-radius: 7px;
    margin-bottom: 15px;
    overflow: hidden;
}

.tet-accordion > details > summary {
    align-items: center;
    background: #f4f8fb;
    color: var(--learn-navy);
    cursor: pointer;
    display: flex;
    font-size: 16px;
    font-weight: 800;
    justify-content: space-between;
    list-style: none;
    padding: 17px 19px;
}

.tet-accordion > details > summary::-webkit-details-marker {
    display: none;
}

.tet-accordion > details > summary::after {
    align-items: center;
    background: var(--learn-blue);
    border-radius: 50%;
    color: #ffffff;
    content: "+";
    display: flex;
    flex: 0 0 24px;
    font-size: 18px;
    height: 24px;
    justify-content: center;
    margin-left: 14px;
}

.tet-accordion > details[open] > summary {
    background: var(--learn-navy);
    color: #ffffff;
}

.tet-accordion > details[open] > summary::after {
    background: var(--learn-gold);
    color: var(--learn-navy);
    content: "-";
}

.tet-content {
    color: #3c5065;
    padding: 20px;
}

.book-page-content {
    background:
        linear-gradient(90deg, rgba(7, 41, 77, 0.025) 1px, transparent 1px),
        #fffefb;
    background-size: 28px 28px;
}

.edu-section,
.edu-section-highlight {
    background: #ffffff;
    border: 1px solid var(--learn-line);
    border-left: 4px solid var(--learn-blue);
    border-radius: 5px;
    box-shadow: 0 7px 18px rgba(7, 41, 77, 0.045);
    margin: 0 0 16px;
    padding: 17px 19px;
}

.edu-section-highlight {
    background: #f2f8fd;
    border-left-color: var(--learn-teal);
}

.edu-section h4,
.edu-section-highlight h4 {
    font-size: 17px;
    font-weight: 800;
    margin: 0 0 11px;
}

.edu-section ul,
.edu-section-highlight ul {
    margin-bottom: 0;
    padding-left: 22px;
}

.edu-section li,
.edu-section-highlight li {
    margin: 7px 0;
}

.edu-purple {
    color: #7047a3 !important;
}

.edu-green {
    color: #16836f !important;
}

.edu-yellow {
    color: #9a7000 !important;
}

.exam-corner-box {
    background: #fff9df;
    border-color: #f2d36b;
    border-left-color: var(--learn-gold);
}

.edu-exam-wrapper {
    background: transparent;
    border: 0;
    border-top: 1px solid var(--learn-line);
    box-shadow: none;
    margin-top: 30px;
    padding-top: 24px;
    text-align: center;
}

.edu-exam-wrapper h3 {
    color: var(--learn-navy);
    margin: 0;
}

.page-footer {
    color: #94a0af;
    font-size: 11px;
    font-weight: 800;
    letter-spacing: 0.7px;
    padding: 6px 0 0;
    text-align: center;
    text-transform: uppercase;
}

.tet-accordion > details > h4 {
    color: var(--learn-navy);
    font-size: 17px;
    line-height: 1.55;
    margin: 24px 20px 0;
}

.tet-accordion > details > .tet-content {
    background: #ffffff;
    border: 1px solid var(--learn-line);
    border-radius: 6px;
    margin: 12px 20px 22px;
    padding: 18px;
}

.tet-content > p {
    background: #f7fafc;
    border-radius: 5px;
    line-height: 1.9;
    margin: 0 0 15px;
    padding: 14px 16px;
}

.show-answer-btn {
    background: var(--learn-blue);
    border-radius: 4px;
    color: #ffffff;
    cursor: pointer;
    display: inline-block;
    font-size: 13px;
    font-weight: 900;
    padding: 10px 15px;
    user-select: none;
}

.show-answer-btn:hover {
    background: var(--learn-navy);
    box-shadow: 0 7px 16px rgba(7, 41, 77, 0.16);
}

.answer-box {
    background: #edf8f3;
    border: 1px solid #bfe3d2;
    border-left: 4px solid #21966f;
    border-radius: 5px;
    color: #294f43;
    line-height: 1.72;
    margin-top: 14px;
    padding: 17px 18px;
}

.answer-box p {
    background: rgba(255, 255, 255, 0.58);
    border-radius: 4px;
    margin: 12px 0 0;
    padding: 10px 12px;
}

/* Reusable bilingual question and answer card */
.dsc-question-language {
    align-items: center;
    background: #f4f8fb;
    border: 1px solid var(--learn-line);
    border-radius: 8px;
    display: flex;
    flex-wrap: wrap;
    gap: 8px;
    margin: 0 0 18px;
    padding: 10px 12px;
}

.dsc-question-language__label {
    color: var(--learn-navy);
    font-size: 12px;
    font-weight: 900;
    margin-right: 4px;
    text-transform: uppercase;
}

.dsc-question-language__button {
    background: #ffffff;
    border: 1px solid #cbd8e5;
    border-radius: 5px;
    color: #455b70;
    cursor: pointer;
    font: inherit;
    font-size: 12px;
    font-weight: 800;
    padding: 7px 12px;
}

.dsc-question-language__button:hover,
.dsc-question-language__button:focus {
    border-color: #69a6d1;
    color: #2d6f9d;
    outline: 0;
}

.dsc-question-language__button[aria-pressed="true"] {
    background: #023e8a;
    border-color: #023e8a;
    color: #ffffff;
}

.dsc-question-list[data-language="en"] .dsc-lang-te,
.dsc-question-list[data-language="en"] .dsc-lang-separator,
.dsc-question-list[data-language="te"] .dsc-lang-en,
.dsc-question-list[data-language="te"] .dsc-lang-separator {
    display: none;
}

.dsc-question {
    background: #ffffff;
    border: 1px solid var(--learn-line);
    border-radius: 10px;
    box-shadow: 0 10px 28px rgba(7, 41, 77, 0.07);
    margin: 0 0 28px;
    overflow: hidden;
}

.dsc-question__header {
    margin: 0;
}

.dsc-question__toggle {
    align-items: center;
    background: #023e8a;
    border: 0;
    color: #ffffff;
    cursor: pointer;
    display: flex;
    font: inherit;
    justify-content: space-between;
    padding: 14px 20px;
    text-align: left;
    width: 100%;
}

.dsc-question__toggle:hover,
.dsc-question__toggle:focus {
    background: linear-gradient(135deg, #3f82b2, #619fc8);
    outline: 0;
}

.dsc-question__toggle::after {
    align-items: center;
    background: rgba(255, 255, 255, 0.14);
    border-radius: 50%;
    content: "+";
    display: flex;
    flex: 0 0 28px;
    font-size: 20px;
    height: 28px;
    justify-content: center;
    margin-left: 14px;
}

.dsc-question__toggle[aria-expanded="true"]::after {
    background: var(--learn-gold);
    color: var(--learn-navy);
    content: "-";
}

.dsc-question__header-copy {
    align-items: center;
    display: flex;
    flex: 1;
    gap: 14px;
    justify-content: space-between;
    min-width: 0;
}

.dsc-question__number {
    font-size: 13px;
    font-weight: 900;
    letter-spacing: 0.35px;
    text-transform: uppercase;
}

.dsc-question__type {
    background: rgba(255, 255, 255, 0.2);
    border-radius: 999px;
    color: #dceafa;
    font-size: 10px;
    font-weight: 900;
    letter-spacing: 0.6px;
    padding: 5px 9px;
    text-transform: uppercase;
}

.dsc-question__body {
    padding: 24px;
}

.dsc-question__body[hidden] {
    display: none;
}

.dsc-question__text {
    color: var(--learn-navy);
    font-size: 19px;
    font-weight: 800;
    line-height: 1.55;
    margin: 0;
}

.dsc-question__text--te {
    color: #42566b;
    font-size: 18px;
    margin-top: 6px;
}

.dsc-lang-separator {
    color: #8a98a9;
}

.dsc-question__options {
    display: grid;
    gap: 10px;
    list-style: none;
    margin: 22px 0;
    padding: 0;
}

.dsc-question__option {
    align-items: flex-start;
    background: #f8fafc;
    border: 1px solid #dfe7ef;
    border-radius: 7px;
    color: #34475b;
    cursor: pointer;
    display: flex;
    gap: 12px;
    line-height: 1.6;
    padding: 12px 14px;
    transition: background 0.2s ease, border-color 0.2s ease, box-shadow 0.2s ease;
}

.dsc-question__option:hover,
.dsc-question__option:focus {
    background: #eef5fb;
    border-color: #9ebbd3;
    outline: 0;
}

.dsc-question__option.is-selected {
    background: #eaf3fb;
    border-color: var(--learn-blue);
    box-shadow: 0 0 0 2px rgba(15, 76, 129, 0.1);
    color: var(--learn-navy);
    font-weight: 800;
}

.dsc-question__option.is-selected .dsc-question__option-number {
    background: var(--learn-blue);
    color: #ffffff;
}

.dsc-question.is-answered .dsc-question__option {
    cursor: default;
}

.dsc-question__option.is-incorrect {
    background: #fff0f0;
    border-color: #d98585;
    box-shadow: 0 0 0 2px rgba(180, 45, 45, 0.08);
    color: #8b2727;
}

.dsc-question__option.is-incorrect .dsc-question__option-number {
    background: #b83b3b;
    color: #ffffff;
}

.dsc-question__option-number {
    align-items: center;
    background: #e6eef6;
    border-radius: 50%;
    color: var(--learn-blue);
    display: flex;
    flex: 0 0 28px;
    font-size: 12px;
    font-weight: 900;
    height: 28px;
    justify-content: center;
    margin-top: 1px;
}

.dsc-question__option.is-correct {
    background: #e8f7ef;
    border-color: #75c59f;
    box-shadow: 0 0 0 2px rgba(33, 150, 111, 0.1);
    color: #145b42;
    font-weight: 800;
}

.dsc-question__option.is-correct .dsc-question__option-number {
    background: #21966f;
    color: #ffffff;
}

.dsc-question__option.is-correct::after {
    color: #16805e;
    content: "Correct";
    font-size: 11px;
    font-weight: 900;
    margin-left: auto;
    padding: 4px 0 0 10px;
    text-transform: uppercase;
}

.dsc-question__actions {
    align-items: center;
    display: flex;
    flex-wrap: wrap;
    gap: 12px;
}

.dsc-question__answer-btn {
    background: #023e8a;
    border: 0;
    border-radius: 5px;
    color: #ffffff;
    cursor: pointer;
    font: inherit;
    font-size: 13px;
    font-weight: 900;
    padding: 11px 18px;
}

.dsc-question__answer-btn:hover,
.dsc-question__answer-btn:focus {
    background: #3f82b2;
    box-shadow: 0 7px 16px rgba(38, 93, 132, 0.16);
    outline: 0;
}

.dsc-question__answer-btn[aria-expanded="true"] {
    background: #16805e;
    cursor: default;
}

.dsc-question__details {
    border-top: 1px solid var(--learn-line);
    margin-top: 22px;
    padding-top: 20px;
}

.dsc-question__details[hidden] {
    display: none;
}

.dsc-question__category {
    color: var(--learn-blue);
    font-size: 13px;
    font-weight: 800;
    margin-bottom: 14px;
}

.dsc-question__explanation {
    color: #465b70;
    line-height: 1.75;
    margin: 0;
}

.dsc-question-list[data-language="both"] .dsc-question__explanation + .dsc-question__explanation {
    margin-top: 12px;
}

.dsc-question-list[data-language="both"] .dsc-question__key-points .dsc-lang-te {
    border-top: 1px solid #d8e6f1;
    margin-top: 13px;
    padding-top: 13px;
}

.dsc-question__key-points {
    background: #eef6fc;
    border-left: 4px solid var(--learn-blue);
    border-radius: 0 6px 6px 0;
    color: #34475b;
    margin-top: 16px;
    padding: 15px 17px;
}

.dsc-question__key-points strong {
    color: var(--learn-navy);
    display: block;
    margin-bottom: 7px;
}

.dsc-question__key-points ul {
    margin: 0;
    padding-left: 20px;
}

.dsc-question__key-points li {
    margin: 5px 0;
}

/* Focused LMS lesson workspace */
.met-lesson-page {
    background: #ffffff;
}

.met-lesson-shell {
    grid-template-columns: 360px minmax(0, 1fr);
    max-width: none;
    min-height: 100vh;
}

.met-lesson-sidebar {
    border-right: 1px solid #e1e5ea;
    height: 100vh;
    min-height: 640px;
    overflow: hidden;
    padding: 0;
    position: sticky;
    top: 0;
}

.met-lesson-search {
    align-items: center;
    background: #f7f8fb;
    border-bottom: 1px solid #e1e5ea;
    display: flex;
    height: 88px;
    padding: 0 20px;
}

.met-lesson-search input {
    background: transparent;
    border: 0;
    color: #435065;
    flex: 1;
    font-size: 16px;
    min-width: 0;
    outline: 0;
    padding: 12px 8px 12px 0;
}

.met-lesson-search input::placeholder {
    color: #8b94a3;
}

.met-lesson-search span {
    color: #34495e;
    font-size: 19px;
}

.met-side-list {
    height: calc(100% - 88px);
    overflow-y: auto;
    scrollbar-color: #b9bdc3 transparent;
    scrollbar-width: thin;
}

.met-side-section {
    margin: 0;
}

.met-side-section-toggle {
    align-items: center;
    background: #f4f6f8;
    border: 0;
    border-bottom: 1px solid #e6e9ed;
    color: #173b68;
    cursor: pointer;
    display: flex;
    font-family: Georgia, "Times New Roman", serif;
    font-size: 13px;
    font-weight: 700;
    justify-content: space-between;
    letter-spacing: 0.2px;
    margin: 0;
    gap: 12px;
    padding: 10px 16px;
    text-align: left;
    text-transform: none;
    width: 100%;
}

.met-side-section-name {
    flex: 1;
    line-height: 1.3;
    min-width: 0;
}

.met-side-section-meta {
    align-items: center;
    display: flex;
    flex: 0 0 auto;
    color: #708196;
    font-family: Arial, sans-serif;
    font-size: 9px;
    font-weight: 700;
    gap: 9px;
    letter-spacing: 0;
    white-space: nowrap;
}

.met-side-section.is-open .met-side-section-toggle {
    background: #e9f2fb;
    color: #0b5fa5;
}

.met-side-section-toggle:hover,
.met-side-section-toggle:focus {
    background: #eaf1f8;
    color: var(--learn-blue);
    outline: 0;
}

.met-side-section-toggle i {
    border-bottom: 2px solid currentColor;
    border-right: 2px solid currentColor;
    display: block;
    height: 7px;
    transform: rotate(45deg);
    transition: transform 0.2s ease;
    width: 7px;
}

.met-side-section.is-open .met-side-section-toggle i {
    transform: rotate(225deg);
}

.met-side-section-lessons[hidden] {
    display: none;
}

.met-side-lesson {
    align-items: flex-start;
    border-bottom: 1px solid #eceef1;
    border-left: 0;
    border-radius: 0;
    color: #17304f;
    display: flex;
    font-size: 14px;
    gap: 10px;
    line-height: 1.3;
    margin: 0;
    min-height: 44px;
    padding: 8px 14px;
}

.met-side-lesson:hover {
    background: #f8fafc;
    border-left: 0;
    color: var(--learn-blue);
}

.met-side-lesson.active {
    background: #f4f8fc;
    border-left: 4px solid var(--learn-blue);
    color: var(--learn-navy);
    padding-left: 10px;
}

.met-side-doc {
    color: #727b86;
    flex: 0 0 18px;
    font-size: 14px;
    line-height: 1.2;
    margin-top: 1px;
}

.met-side-copy {
    flex: 1;
    min-width: 0;
}

.met-side-title {
    display: block;
}

.met-side-copy small {
    background: #ffebe8;
    border-radius: 999px;
    color: #f04a3a;
    display: inline-block;
    font-size: 11px;
    font-weight: 600;
    margin-top: 8px;
    padding: 5px 11px;
}

.met-side-state {
    color: #9aa1a9;
    flex: 0 0 18px;
    font-size: 16px;
    font-weight: 900;
    padding-top: 1px;
    text-align: center;
}

.met-lesson-workspace {
    background: #ffffff;
    min-width: 0;
    position: relative;
}

.met-lesson-toolbar {
    align-items: center;
    background: #062b55;
    color: #ffffff;
    display: grid;
    grid-template-columns: 52px minmax(0, 1fr) auto;
    height: 88px;
    position: sticky;
    top: 0;
    z-index: 8;
}

.met-lesson-toolbar strong {
    font-size: 17px;
    font-weight: 700;
    padding-left: 28px;
}

.met-lesson-toolbar > span {
    font-size: 14px;
    padding: 0 32px;
    white-space: nowrap;
}

.met-toolbar-back {
    align-items: center;
    background: rgba(255, 255, 255, 0.08);
    color: #ffffff;
    display: flex;
    font-size: 35px;
    height: 88px;
    justify-content: center;
    line-height: 1;
    text-decoration: none;
}

.met-toolbar-back:hover {
    background: rgba(255, 255, 255, 0.16);
    color: #ffffff;
}

.met-lesson-main {
    background: #ffffff;
    padding: 34px 48px 52px;
}

.met-lesson-card {
    border: 0;
    border-radius: 0;
    box-shadow: none;
    max-width: 990px;
    padding: 0;
}

.met-lesson-kicker {
    color: #728095;
    letter-spacing: 0.8px;
}

.met-lesson-card h1 {
    font-size: clamp(27px, 3vw, 36px);
    margin-bottom: 30px;
}

.met-lesson-content {
    color: #676767;
    font-size: 17px;
    line-height: 1.88;
}

.met-lesson-content strong {
    color: #183351;
}

.met-lesson-content h2 {
    background: #fff2c8;
    border-left: 5px solid var(--learn-gold);
    border-radius: 4px;
    color: #855f00;
    font-size: 28px;
    line-height: 1.3;
    padding: 15px 19px;
}

.met-lesson-content h3 {
    background: #e9e9ff;
    border-left: 5px solid #6550d8;
    border-radius: 4px;
    color: #37359b;
    font-size: 25px;
    line-height: 1.35;
    padding: 14px 18px;
}

.met-lesson-content h4 {
    font-size: 18px;
}

.met-lesson-content table {
    color: #676767;
}

.met-lesson-content th {
    background: #f4f4f8;
    color: var(--learn-navy);
}

.met-lesson-nav {
    max-width: 990px;
}

.met-nav-link {
    border-radius: 4px;
    box-shadow: none;
}

.met-content-watermark {
    color: rgba(7, 41, 77, 0.025);
    font-size: 26px;
    font-weight: 800;
    inset: 0;
    letter-spacing: 1px;
    overflow: hidden;
    pointer-events: none;
    position: fixed;
    text-transform: uppercase;
    z-index: 7;
}

.met-content-watermark span {
    position: absolute;
    transform: rotate(-28deg);
}

.met-content-watermark span:first-child {
    left: 42%;
    top: 38%;
}

.met-content-watermark span:last-child {
    left: 58%;
    top: 70%;
}

.dsc-focused-reader .met-lesson-content {
    -webkit-user-select: none;
    user-select: none;
}

.dsc-focused-reader input,
.dsc-focused-reader textarea {
    -webkit-user-select: text;
    user-select: text;
}

.met-lesson-nav {
    display: flex;
    gap: 16px;
    justify-content: space-between;
    margin: 26px auto 0;
    max-width: 920px;
}

.met-nav-link {
    background: #ffffff;
    border: 1px solid var(--learn-line);
    border-radius: 6px;
    color: #34475b;
    display: block;
    max-width: 48%;
    padding: 15px 18px;
    text-decoration: none;
}

.met-nav-link:hover {
    border-color: rgba(15, 76, 129, 0.28);
    box-shadow: 0 10px 24px rgba(7, 41, 77, 0.08);
    color: var(--learn-blue);
    transform: translateY(-2px);
}

.met-nav-link.next {
    margin-left: auto;
    text-align: right;
}

.met-nav-link small {
    color: #8a98a9;
    display: block;
    font-size: 10px;
    font-weight: 900;
    margin-bottom: 4px;
    text-transform: uppercase;
}

@media (max-width: 960px) {
    .dsc-hero-grid,
    .met-course-layout {
        grid-template-columns: 1fr;
    }

    .dsc-hero-card {
        display: none;
    }

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

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

    .met-start-card {
        position: static;
    }

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

    .met-lesson-sidebar {
        border-bottom: 1px solid var(--learn-line);
        border-right: 0;
        height: auto;
        min-height: 0;
        position: static;
    }

    .met-side-list {
        max-height: 380px;
    }

    .met-lesson-toolbar {
        position: static;
    }
}

@media (max-width: 760px) {
    .dsc-top {
        display: none;
    }

    .dsc-header .dsc-wrap {
        align-items: flex-start;
        flex-direction: column;
        padding-bottom: 17px;
        padding-top: 17px;
    }

    .dsc-nav {
        flex-wrap: wrap;
        gap: 15px;
        margin: 17px 0 0;
    }

    .dsc-nav .dsc-login {
        padding: 9px 13px;
    }

    .dsc-footer-grid {
        grid-template-columns: 1fr;
    }

    .dsc-zone-head {
        align-items: flex-start;
        flex-direction: column;
        gap: 8px;
    }

    .met-lesson-main {
        padding: 28px 22px 42px;
    }

    .met-lesson-card {
        padding: 0;
    }

    .met-lesson-toolbar {
        grid-template-columns: 46px minmax(0, 1fr);
        height: auto;
        min-height: 72px;
    }

    .met-toolbar-back {
        height: 72px;
    }

    .met-lesson-toolbar strong {
        font-size: 15px;
        padding: 0 14px;
    }

    .met-lesson-toolbar > span {
        display: none;
    }

    .tet-content {
        padding: 15px;
    }

    .tet-accordion > details > h4,
    .tet-accordion > details > .tet-content {
        margin-left: 14px;
        margin-right: 14px;
    }

    .dsc-question__toggle,
    .dsc-question__body {
        padding-left: 16px;
        padding-right: 16px;
    }

    .dsc-question__type {
        display: none;
    }

    .dsc-question__option.is-correct::after {
        display: none;
    }
}

@media (max-width: 620px) {
    .dsc-hero {
        min-height: 0;
        padding: 62px 0 82px;
    }

    .dsc-search {
        display: block;
    }

    .dsc-search a {
        justify-content: center;
        text-align: center;
    }

    .dsc-stats-grid,
    .dsc-course-grid,
    .dsc-path-grid,
    .met-course-stats {
        grid-template-columns: 1fr;
    }

    .dsc-stat {
        border-bottom: 1px solid var(--learn-line);
        border-right: 0;
    }

    .dsc-stat:last-child {
        border-bottom: 0;
    }

    .met-panel {
        padding: 22px;
    }

    .met-lesson-row {
        align-items: flex-start;
        flex-wrap: wrap;
    }

    .met-lesson-duration {
        margin-left: 47px;
        width: 100%;
    }

    .met-lesson-nav {
        flex-direction: column;
    }

    .met-nav-link,
    .met-nav-link.next {
        margin-left: 0;
        max-width: 100%;
        text-align: left;
    }
}

@media print {
    .dsc-focused-reader body,
    .dsc-focused-reader .met-lesson-page {
        display: none !important;
    }
}