@font-face {
    font-family: 'Academy Sans';
    src: url('/static/fonts/academy-sans.woff2') format('woff2');
    font-weight: 100 900;
    font-display: swap;
}
/* This system is scoped to the student application. */
body.academy-app {
    --primary-bg: #0a0f1a;
    --secondary-bg: #131b2b;
    --border-color: #283349;
    --text-primary: #f1f3f9;
    --text-secondary: #aab4c6;
    --study-teal: #7bd2cf;
    --study-purple: #c0a3ff;
    --study-orange: #ffb97e;
    margin: 0;
    padding: 0;
    background: var(--primary-bg);
    color: var(--text-primary);
    font-family: 'Academy Sans', Arial, sans-serif;
    font-size: 16px;
    line-height: 1.7;
    animation: none;
}
body.academy-app *, body.academy-app *::before, body.academy-app *::after { box-sizing: border-box; }
body.academy-app :is(h1,h2,h3,h4,h5,h6) { font-family: inherit; color: var(--text-primary); text-shadow: none; letter-spacing: -.025em; line-height: 1.25; text-transform: none; opacity: 1; }
body.academy-app p { color: var(--text-secondary); }
body.academy-app :is(a,button,input,select,textarea,summary):focus-visible { outline: 2px solid var(--study-teal); outline-offset: 4px; }
body.academy-app :is(button,input,select,textarea) { font-family: inherit; }
body.academy-app button { cursor: pointer; }
body.academy-app [hidden], body.academy-app .d-none { display: none !important; }
body.academy-app :is(.fade-in,.animated-slide-in,.pulse-ring) { animation: none; }
body.academy-app :is(.card,.content-tile,.challenge-card,.modal-content,.auth-card,.instance-window,.license-card) { background: var(--secondary-bg); box-shadow: none; }
body.academy-app :is(.card,.content-tile,.challenge-card):hover { transform: none; box-shadow: none; }
body.academy-app :is(.button,.btn-activate,.modal-button,.study-button) {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    gap: 18px;
    padding: 14px 24px;
    min-height: 48px;
    background: var(--accent-teal);
    color: white;
    border: 1px solid transparent;
    border-radius: 6px;
    font-size: 14px;
    font-weight: 550;
    line-height: 1.4;
    text-transform: none;
    text-decoration: none;
    letter-spacing: 0;
    box-shadow: none;
    transform: none;
    transition: background-color .15s, border-color .15s;
}
body.academy-app :is(.button,.btn-activate,.study-button):hover { background: #267f83; color: white; box-shadow: none; transform: none; }
body.academy-app :is(.study-button-quiet,.button.secondary,.modal-button.secondary) { background: transparent; border-color: #3a475e; color: var(--text-primary); }
body.academy-app :is(.study-button-quiet,.button.secondary):hover { background: #1b273a; border-color: #67768d; }
body.academy-app .study-text-link { display: inline-flex; align-items: center; gap: 16px; color: var(--study-teal); font-size: 14px; font-weight: 500; text-decoration: none; }
body.academy-app .study-text-link:hover { color: white; }
body.academy-app :is(button:disabled,.button:disabled) { opacity: .5; cursor: not-allowed; }
body.academy-app input:not([type=hidden]):not([type=checkbox]):not([type=radio]), body.academy-app select, body.academy-app textarea { background: var(--primary-bg); border: 1px solid #36435b; color: var(--text-primary); border-radius: 6px; min-height: 48px; padding: 12px 16px; font-size: 15px; line-height: 1.5; box-shadow: none; }
body.academy-app input::placeholder { color: #8390a7; opacity: 1; }
body.academy-app label, body.academy-app .form-group label { color: var(--text-secondary); font-size: 14px; font-weight: 450; letter-spacing: 0; text-transform: none; }
body.academy-app .form-group { margin-bottom: 24px; }
body.academy-app .study-wrap { width: calc(100% - 128px); max-width: 1248px; margin: 0 auto; padding: 64px 0 96px; }
body.academy-app .study-heading { display: flex; align-items: center; justify-content: space-between; gap: 32px; margin-bottom: 48px; }
body.academy-app .study-heading h1 { font-size: clamp(36px,4vw,52px); font-weight: 450; letter-spacing: -.04em; margin: 0 0 14px; }
body.academy-app .study-heading p { margin: 0; font-size: 16px; }
body.academy-app .study-section-heading { display: flex; justify-content: space-between; align-items: center; gap: 24px; margin-bottom: 28px; }
body.academy-app .study-section-heading h2 { font-size: 29px; font-weight: 450; margin: 0; }
body.academy-app .study-section-heading p { font-size: 14px; margin: 12px 0 0; }
body.academy-app .study-count { display: inline-flex; align-items: center; justify-content: center; width: 28px; height: 28px; margin-left: 10px; background: #252039; color: var(--study-purple); border-radius: 50%; font-size: 12px; vertical-align: middle; }
/* The course emblem is the visual focus of the learning desk. */
body.academy-app .study-feature { display: grid; grid-template-columns: 1.25fr 1fr; align-items: center; gap: 64px; position: relative; background: var(--secondary-bg); border: 1px solid var(--border-color); border-radius: 12px; padding: 52px 64px; overflow: hidden; }
body.academy-app .study-feature-copy { position: relative; z-index: 1; }
body.academy-app .study-feature-status { display: flex; align-items: center; gap: 10px; font-size: 13px; color: var(--study-teal); margin-bottom: 28px; }
body.academy-app .study-feature h2 { font-size: clamp(32px,3.5vw,46px); line-height: 1.18; font-weight: 450; letter-spacing: -.035em; max-width: 16ch; margin: 0 0 24px; }
body.academy-app .study-feature p { max-width: 47ch; font-size: 16px; line-height: 1.8; margin: 0 0 32px; }
body.academy-app .study-feature-actions { display: flex; gap: 24px; align-items: center; flex-wrap: wrap; }
body.academy-app .study-completion { font-size: 13px; color: var(--text-secondary); }
body.academy-app .study-feature-art { display: flex; align-items: center; justify-content: center; min-width: 0; }
body.academy-app .study-feature-art img { display: block; width: 330px; height: 330px; max-width: 100%; object-fit: contain; }
body.academy-app .study-art-caption { display: none; }
body.academy-app progress { display: block; appearance: none; border: 0; height: 4px; width: 100%; background: #2a354a; overflow: hidden; }
body.academy-app progress::-webkit-progress-bar { background: #2a354a; }
body.academy-app progress::-webkit-progress-value { background: var(--accent-teal); }
body.academy-app progress::-moz-progress-bar { background: var(--accent-teal); }
body.academy-app .study-feature-progress { position: absolute; bottom: 0; left: 0; height: 3px; }
body.academy-app .study-library { margin-top: 64px; }
body.academy-app .study-course-list { border-top: 1px solid var(--border-color); }
body.academy-app .study-course-row { display: grid; grid-template-columns: 88px minmax(0,1fr) 138px 144px; gap: 32px; align-items: center; padding: 28px 0; border-bottom: 1px solid var(--border-color); }
body.academy-app .study-course-art { width: 88px; height: 88px; border-radius: 8px; object-fit: cover; }
body.academy-app .study-course-info h3 { margin: 0 0 10px; font-size: 20px; font-weight: 500; }
body.academy-app .study-course-info p { margin: 0; font-size: 13px; }
body.academy-app .study-course-progress { font-size: 12px; color: var(--text-secondary); }
body.academy-app .study-course-progress progress { margin-top: 12px; }
body.academy-app .study-tag { display: inline-flex; padding: 5px 10px; background: #252039; color: var(--study-purple); border-radius: 4px; font-size: 12px; }
body.academy-app .study-practice-invite { display: flex; align-items: center; gap: 28px; padding: 36px 40px; background: #151b29; border-radius: 10px; margin: 64px 0 80px; }
body.academy-app .study-practice-invite>div:nth-child(2) { flex: 1; }
body.academy-app .study-practice-invite h2 { font-size: 23px; font-weight: 450; margin: 0 0 8px; }
body.academy-app .study-practice-invite p { font-size: 14px; margin: 0; }
body.academy-app .study-mascot { flex-shrink: 0; width: 70px; height: 70px; }
body.academy-app .study-mascot img { display: block; width: 100%; height: 100%; border-radius: 50%; object-fit: cover; }
body.academy-app .study-achievements { scroll-margin-top: 128px; }
body.academy-app .study-achievement-columns { display: grid; grid-template-columns: 1fr 1fr; gap: 64px; border-top: 1px solid var(--border-color); padding-top: 32px; }
body.academy-app .study-achievement-columns>section+section { padding-left: 48px; border-left: 1px solid var(--border-color); }
body.academy-app .study-achievement-columns h3 { font-size: 19px; font-weight: 500; margin: 0 0 20px; }
body.academy-app :is(.study-empty-copy,.placeholder-tile) { font-size: 14px; color: var(--text-secondary); max-width: 48ch; line-height: 1.8; }
body.academy-app .study-exam { display: flex; gap: 24px; align-items: center; margin-bottom: 28px; }
body.academy-app .study-exam img { width: 76px; height: 76px; object-fit: contain; }
body.academy-app .study-exam h4 { font-size: 18px; margin: 0 0 8px; }
body.academy-app .study-exam p { font-size: 13px; margin-bottom: 8px; }
body.academy-app .cert-list { gap: 20px; }
body.academy-app .certificate-tile { border: 1px solid var(--border-color); border-radius: 8px; overflow: hidden; }
body.academy-app .study-license-section { margin-top: 64px; }
body.academy-app .license-card { border: 1px solid var(--border-color); padding: 28px; }
body.academy-app .study-activation { margin: -16px 0 40px; padding: 24px; border: 1px solid var(--border-color); border-radius: 8px; background: var(--secondary-bg); }
body.academy-app .study-summary-action { font-size: 13px; color: var(--study-teal); }
body.academy-app .study-summary-action span { margin-left: 20px; }
body.academy-app .study-activation-forms { display: grid; grid-template-columns: 1fr 1fr; gap: 24px; padding: 0; }
body.academy-app .study-activation-forms label { display: block; margin-bottom: 10px; }
body.academy-app .study-activation-forms form>div { display: flex; gap: 12px; }
body.academy-app .study-activation-forms input { width: 100%; min-width: 0; }
body.academy-app .study-activation-forms button { white-space: nowrap; }
body.academy-app .study-empty { padding: 40px 0; }
body.academy-app .study-empty h3 { font-size: 24px; font-weight: 450; }
/* Lab browsing keeps each task behind an explicit, keyboard accessible control. */
body.academy-app .study-lab-tally { display: flex; align-items: center; gap: 16px; }
body.academy-app .study-lab-tally strong { font-size: 40px; font-weight: 400; color: var(--study-teal); line-height: 1; }
body.academy-app .study-lab-tally span { max-width: 9ch; color: var(--text-secondary); font-size: 13px; line-height: 1.5; }
body.academy-app .study-lab-guidance { font-size: 14px; margin: 0 0 24px; }
body.academy-app .academy-labs .filter-bar { display: grid; grid-template-columns: 1.6fr 1fr 1fr 1fr auto; align-items: end; gap: 24px; padding: 28px; background: var(--secondary-bg); border: 1px solid var(--border-color); border-radius: 8px; }
body.academy-app .lab-filter { min-width: 0; }
body.academy-app .lab-filter label { display: block; margin: 0 0 10px; font-size: 12px; }
body.academy-app .lab-filter :is(input,select) { width: 100%; min-width: 0; font-size: 14px; }
body.academy-app .toggle-container { min-height: 48px; gap: 12px; font-size: 13px; }
body.academy-app .switch { margin: 0; }
body.academy-app .switch input { position: absolute; width: 1px; min-width: 0; height: 1px; padding: 0; border: 0; }
body.academy-app .switch input:focus-visible + .slider { outline: 2px solid var(--study-teal); outline-offset: 4px; }
body.academy-app .lab-filter-status { display: flex; justify-content: space-between; gap: 20px; padding: 20px 0; }
body.academy-app .lab-filter-status p { margin: 0; font-size: 13px; }
body.academy-app .lab-reset { border: 0; background: none; color: var(--study-teal); font-size: 13px; }
body.academy-app .lab-reset:hover { text-decoration: underline; }
body.academy-app .lab-empty { padding: 36px 0; }
body.academy-app .academy-labs .category-section { margin: 24px 0 48px; padding: 0; max-width: none; }
body.academy-app .category-title { margin: 0 0 28px; font-size: 25px; font-weight: 450; color: var(--text-primary); text-transform: none; letter-spacing: -.02em; }
body.academy-app .academy-labs .challenge-content { display: grid; grid-template-columns: repeat(3,minmax(0,1fr)); gap: 28px; align-items: start; }
body.academy-app .academy-labs .challenge-card { min-width: 0; padding: 30px; border: 1px solid var(--border-color); border-radius: 10px; background: var(--secondary-bg); cursor: default; }
body.academy-app .academy-labs .challenge-card:hover { border-color: #46516a; }
body.academy-app .academy-labs .challenge-header { text-align: left; padding: 0; margin: 0; }
body.academy-app .study-difficulty { display: flex; align-items: center; gap: 8px; font-size: 12px; color: var(--text-secondary); margin-bottom: 28px; }
body.academy-app .academy-labs .challenge-title { font-size: 22px; font-weight: 450; line-height: 1.4; margin: 0 0 20px; min-height: 62px; overflow-wrap: anywhere; }
body.academy-app .academy-labs .cat-tags { justify-content: flex-start; gap: 8px; }
body.academy-app .academy-labs .cat-tag { padding: 4px 8px; border: 0; color: #aab4c6; background: #1d273a; border-radius: 4px; font-size: 11px; }
body.academy-app .academy-labs :is(.solved-tag,.premium-tag) { position: static; display: inline-block; margin: 0 6px 18px 0; padding: 4px 8px; border: 0; border-radius: 4px; font-size: 11px; text-transform: none; letter-spacing: 0; background: #183b3f; color: var(--study-teal); }
body.academy-app .academy-labs .premium-tag { background: #3b2b23; color: var(--study-orange); }
body.academy-app .lab-details-button { width: 100%; display: flex; align-items: center; justify-content: space-between; gap: 16px; min-height: 44px; padding: 18px 0 0; margin-top: 28px; border: 0; border-top: 1px solid var(--border-color); background: none; color: var(--study-teal); font-size: 13px; text-align: left; }
body.academy-app .lab-details-button::after { content: '+'; font-size: 20px; }
body.academy-app .lab-details-button[aria-expanded=true]::after { content: '−'; }
body.academy-app .academy-labs .challenge-body { display: none; }
body.academy-app .academy-labs .challenge-card.expanded { grid-column: 1 / -1; border-color: var(--accent-teal); }
body.academy-app .academy-labs .challenge-card.expanded .challenge-title { min-height: 0; }
body.academy-app .academy-labs .challenge-card.expanded .challenge-body { display: block; max-height: none; overflow: visible; opacity: 1; max-width: 850px; margin: 32px 0 0; }
body.academy-app .academy-labs .challenge-description { font-size: 16px; line-height: 1.85; }
body.academy-app .academy-labs .minimize-btn { display: none; }
body.academy-app .academy-labs .button-group { display: flex; gap: 16px; flex-wrap: wrap; margin-top: 24px; }
body.academy-app .academy-labs .flag-input { width: 100%; max-width: 620px; }
body.academy-app .academy-labs .form-text { display: block; font-size: 13px; margin-top: 10px; }
/* The chapter outline stays quiet while the lesson takes the space. */
body.academy-app .side-navbar { top: 96px; width: 312px; height: calc(100dvh - 96px); padding: 36px 16px; background: var(--secondary-bg); border-right: 1px solid var(--border-color); z-index: 900; }
body.academy-app .sidebar-header { margin: 0 12px 28px; padding: 0 0 24px; }
body.academy-app .study-back-link { display: block; color: var(--text-secondary); font-size: 12px; margin-bottom: 24px; }
body.academy-app .sidebar-header h3 { font-size: 18px; font-weight: 500; color: var(--text-primary); line-height: 1.5; }
body.academy-app .sidebar-nav-links>li>a { display: flex; align-items: baseline; gap: 12px; padding: 12px; border: 0; border-radius: 5px; color: var(--text-secondary); font-size: 13px; font-weight: 400; line-height: 1.6; }
body.academy-app .study-chapter-number { width: 20px; flex-shrink: 0; font-size: 11px; color: #8391a9; }
body.academy-app .sidebar-nav-links a small { display: block; color: var(--study-purple); font-size: 10px; }
body.academy-app .sidebar-nav-links a.active-link { background: #21333f; color: var(--study-teal); }
body.academy-app .sidebar-nav-links a.chapter-locked { opacity: 1; }
body.academy-app .main-content { margin-left: 312px; padding: 40px 64px 80px; }
body.academy-app .study-reader-toolbar { max-width: 780px; margin: 0 auto 48px; display: flex; justify-content: space-between; gap: 16px; align-items: center; font-size: 12px; color: var(--text-secondary); }
body.academy-app .study-reader-toolbar .study-button { min-height: 38px; padding: 9px 14px; font-size: 12px; }
body.academy-app .course-outline-toggle { display: none; }
body.academy-app #course-content { max-width: 780px; margin-inline: auto; font-size: 17px; line-height: 1.9; }
body.academy-app #course-content h1 { font-size: 40px; font-weight: 450; margin: 0 0 40px; border: 0; padding: 0; }
body.academy-app #course-content h2 { font-size: 29px; font-weight: 500; margin: 56px 0 24px; border: 0; padding: 0; }
body.academy-app #course-content h3 { font-size: 23px; margin-top: 36px; }
body.academy-app #course-content p { line-height: 1.9; color: #c5cddd; margin-bottom: 24px; }
body.academy-app #course-content pre { padding: 24px; border: 1px solid var(--border-color); border-radius: 6px; background: #111a29; }
body.academy-app #course-content :is(img,video) { max-width: 100%; height: auto; }
body.academy-app #course-content table { display: block; max-width: 100%; overflow-x: auto; }
body.academy-app .navigation-buttons { max-width: 780px; margin: 56px auto 0; display: flex; justify-content: space-between; gap: 16px; }
body.academy-app.study-reader .academy-footer { margin-left: 312px; }
body.academy-app.study-focus .side-navbar { display: none; }
body.academy-app.study-focus :is(.main-content,.academy-footer) { margin-left: 0; }
/* Account forms follow the same spacing and type scale. */
body.academy-app .auth-header { display: flex; flex-direction: row; align-items: center; justify-content: center; gap: 12px; padding: 36px 24px 0; margin: 0; }
body.academy-app .auth-logo { width: 72px; height: 72px; object-fit: contain; }
body.academy-app .auth-brand { font-size: 22px; font-weight: 400; margin: 0; }
body.academy-app .auth-brand .highlight { color: var(--study-purple); font-weight: 500; }
body.academy-app .auth-main { width: calc(100% - 48px); max-width: 520px; padding: 56px 0 96px; margin: 0 auto; min-height: 65vh; }
body.academy-app .auth-card { width: 100%; padding: 44px; border: 1px solid var(--border-color); border-radius: 12px; }
body.academy-app .auth-title { font-size: 34px; font-weight: 450; text-align: left; margin: 0 0 12px; }
body.academy-app .study-auth-description { font-size: 15px; text-align: left; margin: 0 0 32px; }
body.academy-app .auth-form { display: block; }
body.academy-app .auth-form .form-group { display: block; margin-bottom: 24px; }
body.academy-app .auth-form label { display: block; margin-bottom: 10px; }
body.academy-app .auth-form input { width: 100%; }
body.academy-app .auth-form .button { width: 100%; margin-top: 8px; }
body.academy-app .auth-form .switch-text { font-size: 13px; margin: 24px 0 0; }
body.academy-app .auth-form a { color: var(--study-teal); }
body.academy-app .auth-form .checkbox-group label { display: flex; gap: 12px; align-items: flex-start; }
body.academy-app .auth-form input[type=checkbox] { width: 18px; height: 18px; margin-top: 4px; flex-shrink: 0; }
body.academy-app .study-password { position: relative; }
body.academy-app .study-password input { padding-right: 70px; }
body.academy-app .study-password button { position: absolute; right: 8px; top: 8px; min-height: 32px; border: 0; border-radius: 4px; background: #222f43; color: var(--text-primary); font-size: 12px; padding: 4px 10px; }
body.academy-app .settings-wrapper { width: calc(100% - 96px); max-width: 880px; margin: 0 auto; padding: 64px 0 88px; background: none; border: 0; }
body.academy-app .settings-form { padding: 36px; gap: 20px; background: var(--secondary-bg); border: 1px solid var(--border-color); border-radius: 10px; }
body.academy-app .settings-avatar { width: 80px; height: 80px; border: 1px solid #584978; }
body.academy-app .avatar-center { text-align: left; justify-content: flex-start; margin-bottom: 32px; }
body.academy-app .danger-zone { border: 1px solid #61374b; border-radius: 10px; background: none; padding: 32px; margin-top: 48px; }
body.academy-app .danger-zone-title { font-size: 23px; }
body.academy-app .danger-zone-content { display: block; }
body.academy-app .danger-zone-action { margin-top: 24px; max-width: 440px; }
body.academy-app .button-danger { background: #a23a51; }
/* Dialogs and feedback remain consistent with their existing behavior. */
body.academy-app .message-container { z-index: 12000; top: 112px; }
body.academy-app .message-card { background: var(--secondary-bg); box-shadow: none; }
body.academy-app .modal-content { border: 1px solid var(--border-color); border-radius: 12px; padding: 32px; max-height: 85dvh; overflow-y: auto; animation: none; }
body.academy-app .modal-overlay { backdrop-filter: none; animation: none; }
body.academy-app .modal-close { min-width: 40px; min-height: 40px; }
body.academy-app .modal-title { color: var(--text-primary); }
body.academy-app .cookie-banner { padding: 20px 32px; background: var(--secondary-bg); border-top: 1px solid var(--border-color); box-shadow: none; }
body.academy-app .cookie-banner p { font-size: 13px; }
body.academy-app .cookie-btn { min-height: 42px; }
body.academy-app .academy-footer { padding: 36px 48px; border-top: 1px solid var(--border-color); display: flex; align-items: center; justify-content: space-between; gap: 28px; font-size: 12px; }
body.academy-app .academy-footer-brand { color: var(--text-secondary); font-size: 14px; font-weight: 500; }
body.academy-app .academy-footer nav { display: flex; gap: 24px; flex-wrap: wrap; }
body.academy-app .academy-footer nav a { color: var(--text-secondary); text-decoration: none; }
body.academy-app .academy-footer a:hover { color: white; }
@media (max-width: 1100px) {
    body.academy-app .study-wrap { width: calc(100% - 80px); }
    body.academy-app .study-feature { padding: 40px; gap: 36px; }
    body.academy-app .study-feature-art img { width: 280px; height: 280px; }
    body.academy-app .study-course-row { gap: 24px; grid-template-columns: 72px minmax(0,1fr) 110px 120px; }
    body.academy-app .study-course-art { width: 72px; height: 72px; }
    body.academy-app .academy-labs .filter-bar { grid-template-columns: 1fr 1fr 1fr; }
    body.academy-app .lab-filter:first-child { grid-column: span 2; }
    body.academy-app .academy-labs .challenge-content { grid-template-columns: repeat(2,minmax(0,1fr)); }
    body.academy-app .main-content { padding-inline: 36px; }
}
@media (max-width: 800px) {
    body.academy-app .study-wrap { width: calc(100% - 48px); padding-top: 40px; }
    body.academy-app .study-heading { margin-bottom: 36px; align-items: flex-start; }
    body.academy-app .study-feature { gap: 24px; grid-template-columns: 1.5fr 1fr; padding: 32px; }
    body.academy-app .study-feature h2 { font-size: 32px; }
    body.academy-app .study-feature-art img { height: 200px; }
    body.academy-app .study-course-row { grid-template-columns: 64px minmax(0,1fr) 120px; gap: 20px; }
    body.academy-app .study-course-art { width: 64px; height: 64px; grid-row: span 2; }
    body.academy-app .study-course-progress { grid-column: 2; grid-row: 2; max-width: 180px; }
    body.academy-app .study-course-row>.study-button { grid-column: 3; grid-row: 1 / span 2; }
    body.academy-app .study-practice-invite { flex-wrap: wrap; padding: 28px; }
    body.academy-app .study-practice-invite>.study-button { margin-left: 98px; }
    body.academy-app .study-achievement-columns { gap: 32px; }
    body.academy-app .study-achievement-columns>section+section { padding-left: 32px; }
    body.academy-app .study-activation-forms { grid-template-columns: 1fr; }
    body.academy-app .side-navbar { display: none; top: 80px; height: calc(100dvh - 80px); }
    body.academy-app .side-navbar.active { display: block; position: fixed; width: min(88vw,340px); z-index: 1000; }
    body.academy-app .main-content, body.academy-app.study-reader .academy-footer { margin-left: 0; }
    body.academy-app .main-content { padding: 32px 24px 64px; }
    body.academy-app .course-outline-toggle { display: inline-flex; }
    body.academy-app #study-focus { display: none; }
    body.academy-app .study-reader-toolbar { flex-wrap: wrap; margin-bottom: 32px; }
    body.academy-app .settings-wrapper { width: calc(100% - 48px); padding-top: 40px; }
    body.academy-app .academy-footer { flex-wrap: wrap; padding: 32px 24px; }
}
@media (max-width: 540px) {
    body.academy-app .study-heading { display: block; }
    body.academy-app .study-heading>.study-text-link { margin-top: 24px; }
    body.academy-app .study-feature { display: flex; flex-direction: column-reverse; align-items: stretch; padding: 28px; gap: 8px; }
    body.academy-app .study-feature-art { justify-content: flex-start; }
    body.academy-app .study-feature-art img { width: 110px; height: 110px; }
    body.academy-app .study-feature-status { margin: 12px 0 20px; }
    body.academy-app .study-feature h2 { font-size: 32px; }
    body.academy-app .study-feature-actions { gap: 18px; }
    body.academy-app .study-library { margin-top: 48px; }
    body.academy-app .study-section-heading { align-items: flex-start; }
    body.academy-app .study-section-heading h2 { font-size: 25px; }
    body.academy-app .study-section-heading>.study-text-link { font-size: 12px; white-space: nowrap; margin-top: 5px; }
    body.academy-app .study-course-row { grid-template-columns: 56px minmax(0,1fr); gap: 12px 18px; }
    body.academy-app .study-course-art { width: 56px; height: 56px; grid-row: 1; }
    body.academy-app .study-course-info h3 { font-size: 18px; }
    body.academy-app .study-course-progress { grid-column: 2; grid-row: 2; }
    body.academy-app .study-course-row>.study-button { grid-column: 2; grid-row: 3; margin-top: 8px; justify-self: start; min-height: 42px; padding: 10px 18px; }
    body.academy-app .study-practice-invite { margin: 48px 0; gap: 20px; }
    body.academy-app .study-mascot { width: 54px; height: 54px; }
    body.academy-app .study-practice-invite h2 { font-size: 21px; }
    body.academy-app .study-practice-invite>.study-button { margin-left: 0; width: 100%; }
    body.academy-app .study-achievement-columns { grid-template-columns: 1fr; }
    body.academy-app .study-achievement-columns>section+section { padding: 28px 0 0; border-left: 0; border-top: 1px solid var(--border-color); }
    body.academy-app .study-activation-forms form>div { flex-direction: column; }
    body.academy-app .study-lab-tally { margin-top: 24px; }
    body.academy-app .academy-labs .filter-bar { grid-template-columns: 1fr 1fr; gap: 20px 16px; padding: 20px; }
    body.academy-app .academy-labs .toggle-container { grid-column: span 2; min-height: 24px; }
    body.academy-app .academy-labs .challenge-content { grid-template-columns: minmax(0,1fr); }
    body.academy-app .academy-labs .challenge-card { padding: 28px; }
    body.academy-app .academy-labs .challenge-title { min-height: 0; }
    body.academy-app .academy-labs .button-group { flex-direction: column; }
    body.academy-app #course-content h1 { font-size: 32px; }
    body.academy-app #course-content h2 { font-size: 25px; }
    body.academy-app #course-content { font-size: 16px; }
    body.academy-app .auth-card { padding: 28px; }
    body.academy-app .auth-title { font-size: 29px; }
    body.academy-app .auth-main { padding-top: 32px; }
    body.academy-app .settings-form, body.academy-app .danger-zone { padding: 24px; }
    body.academy-app .cookie-banner { flex-wrap: wrap; padding: 20px 24px; gap: 12px; }
    body.academy-app .cookie-banner p { flex-basis: 100%; margin: 0; }
}
@media (prefers-reduced-motion: reduce) {
    body.academy-app *, body.academy-app *::before, body.academy-app *::after { animation: none !important; transition: none !important; }
}
/* Academy navigation has its own layout, independent of the website navbar. */
body.academy-app { padding-top: 0; }
body.academy-app .academy-header {
    position: sticky;
    top: 0;
    z-index: 1100;
    display: flex;
    align-items: center;
    justify-content: space-between;
    gap: 32px;
    height: 96px;
    padding: 0 max(32px, calc((100vw - 1376px) / 2));
    background: var(--primary-bg);
    border-bottom: 1px solid var(--border-color);
    box-shadow: none;
    transform: none;
}
body.academy-app .academy-brand {
    display: flex;
    align-items: center;
    gap: 12px;
    flex-shrink: 0;
    color: var(--text-primary);
    font-size: 21px;
    font-weight: 600;
    line-height: 1.1;
    text-decoration: none;
}
body.academy-app .academy-brand small { display: block; margin-top: 5px; color: var(--text-secondary); font-size: 12px; font-weight: 400; }
body.academy-app .academy-brand-mark { position: relative; display: block; flex-shrink: 0; width: 32px; height: 36px; overflow: visible; }
body.academy-app .academy-brand-mark img { position: absolute; width: 80px; height: 80px; max-width: none; top: 50%; left: 50%; transform: translate(-50%, -50%); pointer-events: none; }
body.academy-app .academy-nav { position: static; display: block; width: auto; height: auto; padding: 0; margin: 0; background: none; border: 0; border-radius: 0; box-shadow: none; transform: none; }
body.academy-app .academy-nav ul { display: flex; align-items: center; gap: 32px; list-style: none; margin: 0; padding: 0; }
body.academy-app .academy-nav li { margin: 0; padding: 0; }
body.academy-app .academy-nav a { display: flex; align-items: center; height: 48px; padding: 0; color: var(--text-secondary); font-size: 14px; font-weight: 500; line-height: 1.4; border: 0; text-decoration: none; white-space: nowrap; }
body.academy-app .academy-nav a[aria-current] { color: var(--text-primary); border-bottom: 2px solid var(--accent-teal); }
body.academy-app .academy-header-actions { display: flex; align-items: center; gap: 28px; }
body.academy-app .academy-catalog-link { color: var(--text-secondary); font-size: 13px; text-decoration: none; }
body.academy-app .academy-account { display: flex; align-items: center; gap: 10px; color: var(--text-primary); font-size: 13px; text-decoration: none; }
body.academy-app .academy-account img { width: 36px; height: 36px; border-radius: 50%; border: 1px solid var(--border-color); object-fit: cover; }
body.academy-app .academy-header .burger-menu { display: none; width: 44px; height: 44px; align-items: center; justify-content: center; gap: 5px; border: 1px solid var(--border-color); border-radius: 6px; }
body.academy-app .academy-header .bar { display: block; width: 20px; height: 2px; background: var(--text-primary); }
body.academy-app .academy-skip { position: fixed; top: -80px; left: 24px; z-index: 20000; background: var(--secondary-bg); padding: 12px 20px; color: var(--text-primary); }
body.academy-app .academy-skip:focus { top: 12px; }
@media (max-width: 1000px) {
    body.academy-app .academy-catalog-link { display: none; }
    body.academy-app .academy-header { gap: 24px; }
}
@media (max-width: 800px) {
    body.academy-app .academy-header { height: 80px; padding-inline: 24px; }
    body.academy-app .academy-header .burger-menu { display: flex; }
    body.academy-app .academy-nav { display: none; }
    body.academy-app .academy-nav.nav-active { display: block; position: absolute; top: 79px; left: 0; right: 0; width: 100%; padding: 20px 24px; background: var(--secondary-bg); border-bottom: 1px solid var(--border-color); }
    body.academy-app .academy-nav.nav-active ul { align-items: stretch; gap: 8px; }
    body.academy-app .academy-account span { display: none; }
    body.academy-app .academy-header-actions { gap: 16px; }
    body.academy-app .academy-brand { font-size: 20px; gap: 10px; }
}
body.academy-app .academy-header .burger-menu { background: transparent; color: var(--text-primary); }
body.academy-app .academy-labs .challenge-content { align-items: stretch; }
body.academy-app .academy-labs .challenge-card { display: flex; flex-direction: column; }
body.academy-app .academy-labs .challenge-header { flex: 1; }
body.academy-app .study-lab-status { position: absolute; top: 28px; right: 28px; display: flex; gap: 6px; }
body.academy-app .academy-labs .study-lab-status :is(.solved-tag,.premium-tag) { margin: 0; }
body.academy-app .academy-labs .study-difficulty { min-height: 24px; }
body.academy-app .academy-footer-brand { text-decoration: none; }