:root {
  color-scheme: dark;
  --bg: #111713;
  --panel: #18211b;
  --panel-raised: #202c23;
  --line: #344438;
  --text: #eaf0e6;
  --muted: #b1bdad;
  --accent: #d6f29e;
  --accent-ink: #192214;
  --warning: #f0ce8a;
  --topbar-height: 77px;
  font: 16px/1.65 "Avenir Next", Avenir, system-ui, -apple-system, sans-serif;
  font-synthesis: none;
}
* {box-sizing: border-box}
body {margin: 0; background: var(--bg); color: var(--text)}
a {color: var(--accent); text-underline-offset: 4px}
button, input {font: inherit; touch-action: manipulation}
button, .back-link {min-height: 44px; border: 1px solid var(--line); border-radius: 12px; background: var(--panel-raised); color: var(--text); padding: .7rem 1rem; cursor: pointer; font-weight: 600; line-height: 1.35; transition: background-color .16s, border-color .16s}
button:hover:not(:disabled), .back-link:hover {background: #2a3a2c; border-color: #849475}
button:disabled {opacity: .45; cursor: default}
input {min-width: 0; min-height: 48px; width: 100%; padding: .75rem .9rem; border: 1px solid var(--line); border-radius: 10px; background: var(--bg); color: var(--text); line-height: 1.35}
input::placeholder {color: #909e8c}
input[type=checkbox] {width: 22px; height: 22px; min-height: 22px; margin: 0; flex-shrink: 0; accent-color: var(--accent); cursor: pointer}
button:focus-visible, a:focus-visible, input:focus-visible, summary:focus-visible {outline: 3px solid var(--accent); outline-offset: 4px}
[hidden] {display: none !important}
.primary {background: var(--accent); color: var(--accent-ink); border-color: var(--accent)}
.primary:hover:not(:disabled) {background: #e2fac0; border-color: #e2fac0}
.quiet {background: transparent}
.full-width {width: 100%}
.eyebrow {font-size: .69rem; line-height: 1.4; letter-spacing: .13em; color: var(--accent); font-weight: 700}
.accent {color: var(--accent)}
.skip-link {position: fixed; z-index: 100; top: -80px; left: 16px; padding: 10px 20px; border-radius: 8px; background: var(--accent); color: var(--accent-ink); font-weight: 700}
.skip-link:focus {top: 12px}
.topbar {position: sticky; top: 0; z-index: 10; display: flex; justify-content: space-between; align-items: center; gap: 1rem; min-height: var(--topbar-height); padding: 12px max(24px, calc((100vw - 1440px) / 2)); border-bottom: 1px solid var(--line); background: #111713f5; backdrop-filter: blur(12px)}
.brand {display: flex; align-items: center; gap: 18px; color: var(--text); text-decoration: none; min-height: 44px}
.wordmark {font-weight: 750; font-size: 1.4rem; letter-spacing: -.06em; line-height: 1.2}
.wordmark span {color: var(--accent)}
.brand-course {border-left: 1px solid var(--line); padding-left: 18px; font-size: .85rem; color: var(--muted)}
.account-actions {display: flex; align-items: center; justify-content: flex-end; gap: 14px; min-width: 0}
.back-link {display: inline-flex; align-items: center; gap: 10px; background: transparent; font-size: .8rem; text-decoration: none; white-space: nowrap}
#accountName {font-size: .78rem; color: var(--muted); max-width: 180px; overflow: hidden; text-overflow: ellipsis; white-space: nowrap}
#signOut {font-size: .8rem}
.access {display: grid; grid-template-columns: 1.12fr 1fr; grid-template-areas: 'intro account' 'offer account'; align-items: start; column-gap: clamp(2rem, 7vw, 6rem); row-gap: 18px; max-width: 1120px; margin: 0 auto; padding: clamp(40px, 7vh, 80px) 28px 64px}
.access-intro {grid-area: intro; padding-top: 10px}
.course-offer {grid-area: offer; min-width: 0}
.course-offer h2 {font-size: 1rem; font-weight: 600; margin: 0 0 16px; letter-spacing: -.02em}
.course-symbol {display: inline-grid; place-items: center; width: 64px; height: 64px; border: 1px solid #536447; border-radius: 18px; background: #263322; color: var(--accent); margin-bottom: 24px}
.access h1 {font-size: clamp(2.7rem, 5.4vw, 4.25rem); letter-spacing: -.05em; line-height: 1.04; font-weight: 550; margin: 16px 0 22px}
.intro {font-size: 1.02rem; line-height: 1.75; color: var(--muted); max-width: 440px}
.access-jump {display: none}
.access-card {grid-area: account; scroll-margin-top: calc(var(--topbar-height) + 20px)}
.access-card:focus {outline: none}
.course-facts {display: flex; flex-wrap: wrap; gap: 8px 10px; margin: 26px 0 30px; font-size: .77rem}
.course-facts span {padding: 7px 12px; background: var(--panel); border: 1px solid var(--line); border-radius: 8px; color: var(--muted)}
.course-facts strong {color: var(--text); font-weight: 650}
.course-prices {display: grid; gap: 0; border-block: 1px solid var(--line); margin: 0}
.course-prices>div {display: flex; align-items: center; justify-content: space-between; gap: 18px; padding: 16px 0; border-bottom: 1px solid #34443880; font-size: .84rem}
.course-prices>div:last-child {border-bottom: 0}
.course-prices>div>span {max-width: 230px; color: var(--muted)}
.course-prices strong {font-size: 1.18rem; font-weight: 650; white-space: nowrap; text-align: right; line-height: 1.5}
.course-prices small {display: block; font-size: .66rem; font-weight: 400; color: var(--muted)}
.course-prices .included {font-size: .86rem; color: var(--accent)}
.access-note {font-size: .78rem; line-height: 1.75; color: var(--muted); margin-top: 20px}
.access-card {background: var(--panel); border: 1px solid var(--line); border-radius: 24px; padding: clamp(22px, 3vw, 36px); box-shadow: 0 20px 60px #00000018}
.access-card h2 {font-size: 1.6rem; font-weight: 550; letter-spacing: -.03em; line-height: 1.25; margin: 14px 0}
.card-intro {font-size: .86rem; color: var(--muted); margin: 0 0 24px}
.access-message {font-size: .82rem; color: var(--muted); margin: 0 0 22px; padding: 12px 14px; border-radius: 10px; background: var(--bg); border: 1px solid var(--line); overflow-wrap: anywhere}
.access-message:empty {display: none}
#googleLogin {display: flex; align-items: center; justify-content: center; gap: 12px}
.google-mark {display: inline-grid; place-items: center; font-weight: 750; width: 22px; height: 22px; background: var(--accent-ink); color: var(--accent); border-radius: 50%; font-size: .8rem}
.separator {display: flex; align-items: center; gap: 12px; color: var(--muted); font-size: .75rem; margin: 22px 0}
.separator::before, .separator::after {content: ''; flex: 1; height: 1px; background: var(--line)}
.access form {display: grid; gap: 10px}
.access form label {font-size: .8rem; font-weight: 600; margin-top: 3px}
.access form input+label {margin-top: 6px}
.access form input+button {margin-top: 10px}
.access form button {width: 100%; font-size: .88rem}
.text-button {border-color: transparent; background: transparent; text-decoration: underline; text-underline-offset: 4px; color: var(--muted); font-weight: 400}
.access-actions {display: grid; gap: 10px}
.access-actions:empty {display: none}
.purchase {margin-top: 24px}
.purchase-price {font-size: 3rem; font-weight: 550; letter-spacing: -.05em; line-height: 1.2; color: var(--accent); margin: 20px 0 10px}
.purchase>p:not(.purchase-price) {font-size: .86rem; color: var(--muted)}
.purchase-terms {display: flex; align-items: flex-start; gap: 12px; font-size: .8rem; line-height: 1.8; margin: 24px 0; padding: 14px; border: 1px solid var(--line); border-radius: 12px; cursor: pointer}
.purchase-terms input {margin-top: 3px}
#buyCourse {font-size: .9rem}
#purchaseStatus:empty {display: none}
.classroom {display: grid; grid-template-columns: 310px minmax(0, 1fr); column-gap: 32px; max-width: 1440px; margin: auto; padding: 30px 28px 60px; align-items: start}
.course-overview {grid-column: 1 / -1; display: flex; justify-content: space-between; align-items: center; gap: 32px; padding: 22px 26px; margin-bottom: 24px; border: 1px solid var(--line); border-radius: 20px; background: var(--panel)}
.course-heading {min-width: 0; max-width: 680px}
.course-heading h1 {font-size: clamp(1.4rem, 2.3vw, 2rem); line-height: 1.25; letter-spacing: -.035em; font-weight: 550; margin: 12px 0}
.course-heading>p {font-size: .85rem; color: var(--muted); margin: 0}
.learning-progress {flex: 0 0 285px}
.progress-heading {display: flex; align-items: center; justify-content: space-between; gap: 16px; font-size: .8rem; font-weight: 600}
#progressPercent {font-size: .85rem; color: var(--accent); font-variant-numeric: tabular-nums}
progress {display: block; appearance: none; width: 100%; height: 8px; margin-top: 10px; border: 0; border-radius: 8px; overflow: hidden; background: #344438; accent-color: var(--accent)}
progress::-webkit-progress-bar {background: #344438; border-radius: 8px}
progress::-webkit-progress-value {background: var(--accent); border-radius: 8px; transition: width .2s}
progress::-moz-progress-bar {background: var(--accent); border-radius: 8px}
#progressText {font-size: .73rem; color: var(--muted); margin: 8px 0 12px; font-variant-numeric: tabular-nums}
.resume {width: 100%; background: #273723; border-color: #526648; color: var(--accent); font-size: .8rem; min-height: 42px}
.sidebar {min-width: 0; background: var(--panel); border: 1px solid var(--line); border-radius: 16px; padding: 22px 14px; position: sticky; top: calc(var(--topbar-height) + 20px); max-height: calc(100dvh - var(--topbar-height) - 40px); overflow-y: auto; scrollbar-width: thin; scrollbar-color: #566650 transparent; overscroll-behavior: contain}
.sidebar-heading {display: flex; align-items: center; justify-content: space-between; gap: 12px; padding: 0 6px}
.sidebar-heading h2 {font-size: 1rem; font-weight: 600; letter-spacing: -.02em; margin: 8px 0 22px}
.close-modules {display: none; width: 44px; font-size: 1.8rem; padding: 0; line-height: 1}
.search {display: block; margin: 0 6px 8px; font-size: .73rem; color: var(--muted)}
.search-field {display: flex; align-items: center; gap: 8px; padding: 0 12px; margin: 0 6px; border: 1px solid var(--line); border-radius: 10px; background: var(--bg); color: var(--muted)}
.search-field:focus-within {outline: 3px solid var(--accent); outline-offset: 3px}
.search-field svg {flex-shrink: 0}
.search-field input {border: 0; background: transparent; padding-inline: 0; font-size: 1rem; outline: none; min-height: 44px}
.search-field input:focus-visible {outline: none}
.search-results {font-size: .72rem; color: var(--muted); margin: 10px 6px 16px}
.search-results:empty {margin: 14px 0 0}
.module-section {border-top: 1px solid var(--line); padding: 13px 0}
.module-section:last-child {padding-bottom: 0}
.module-summary {cursor: pointer; font-size: .79rem; font-weight: 650; line-height: 1.5; padding: 4px 6px; min-height: 44px; list-style: none; display: flex; align-items: center; gap: 9px}
.module-summary::-webkit-details-marker {display: none}
.module-summary::before {content: '›'; color: var(--muted); font-size: 1.2rem; transform: rotate(0deg); transition: transform .15s}
.module-section[open]>.module-summary::before {transform: rotate(90deg)}
.module-name {flex: 1; min-width: 0}
.module-progress {flex-shrink: 0; font-size: .65rem; color: var(--muted); font-weight: 400; font-variant-numeric: tabular-nums}
#lessonList ul {padding: 0; margin: 10px 0 0; list-style: none}
#lessonList li {margin: 3px 0}
.lesson-link {display: flex; align-items: flex-start; gap: 10px; width: 100%; text-align: left; border: 1px solid transparent; background: transparent; padding: 11px 9px; border-radius: 9px; font-size: .79rem; font-weight: 400; line-height: 1.55; color: var(--muted); min-height: 44px}
.lesson-link:hover:not(:disabled) {background: #263227; border-color: transparent}
.lesson-link.selected {background: #31402a; border-color: #5a704b; color: var(--text)}
.lesson-link.selected .lesson-number {color: var(--accent)}
.lesson-number {font-size: .69rem; line-height: 1.9; font-variant-numeric: tabular-nums; flex-shrink: 0; width: 20px; text-align: right; color: #91a087}
.lesson-link-title {flex: 1; min-width: 0; overflow-wrap: anywhere}
.lesson-check {flex-shrink: 0; font-size: .8rem; color: var(--accent); min-width: 12px}
.draft-title {display: block; font-size: .63rem; color: var(--warning); margin-top: 3px}
.lesson-panel {min-width: 0; padding: 6px 8px}
.lesson-top {position: sticky; top: var(--topbar-height); z-index: 5; display: flex; align-items: center; gap: 14px; color: var(--muted); font-size: .76rem; flex-wrap: wrap; margin: -8px 0 24px; padding: 8px 0; border-bottom: 1px solid var(--line); background: #111713f5; backdrop-filter: blur(12px)}
#moduleTitle {min-width: 0; flex: 1; overflow: hidden; white-space: nowrap; text-overflow: ellipsis}
.quick-navigation {display: flex; gap: 8px; margin-left: auto; flex-shrink: 0}
.quick-navigation button {width: 44px; height: 44px; padding: 0; font-size: 1.2rem; background: transparent}
.quick-navigation button:disabled {opacity: .28}
.draft {margin-left: auto; font-size: .68rem; color: var(--warning); border: 1px solid #6a5838; padding: 3px 9px; border-radius: 6px}
.lesson-heading {margin: 0 0 24px; scroll-margin-top: calc(var(--topbar-height) + 80px)}
.lesson-heading h2 {font-size: clamp(1.65rem, 3vw, 2.45rem); line-height: 1.18; letter-spacing: -.04em; font-weight: 550; margin: 10px 0 0; overflow-wrap: anywhere}
#lessonTitle:focus {outline: none}
#lessonStatus {font-size: .86rem; color: var(--muted); overflow-wrap: anywhere}
#lessonStatus:empty {display: none}
#retryLesson {margin-bottom: 20px; font-size: .85rem}
.lesson-content {min-width: 0; overflow-wrap: anywhere; color: #c7d1c1}
.lesson-content section {margin: 0}
.lesson-content section+section {margin-top: 28px}
.lesson-content h1, .lesson-content h2 {font-size: 1.35rem; font-weight: 600; line-height: 1.35; letter-spacing: -.02em; margin: 28px 0 14px; color: var(--text)}
.lesson-content h3 {font-size: 1.13rem; font-weight: 600; margin: 24px 0 10px; color: var(--text)}
.lesson-content p, .lesson-content li {font-size: 1rem; line-height: 1.8; max-width: 72ch}
.lesson-content p {margin: 0 0 16px}
.lesson-content section>:first-child {margin-top: 0}
.lesson-content section>:last-child {margin-bottom: 0}
.lesson-content :is(h1, h2, h3) u {text-decoration: none}
.lesson-content :is(h1, h2, h3) em {font-style: normal}
.lesson-content ul, .lesson-content ol {padding-left: 24px}
.lesson-content li+li {margin-top: 8px}
.lesson-content video, .lesson-content iframe {display: block; width: 100%; max-height: 70dvh; background: #080c09; border: 1px solid var(--line); border-radius: 14px}
.lesson-content video {aspect-ratio: 16 / 9; object-fit: contain}
.lesson-content iframe {aspect-ratio: 16 / 9}
.lesson-content img {display: block; max-width: 100%; height: auto; border-radius: 10px; margin: 18px 0}
.lesson-content table {display: block; width: 100%; overflow-x: auto; border-collapse: collapse; font-size: .85rem}
.lesson-content td, .lesson-content th {padding: .65rem; border: 1px solid var(--line)}
.lesson-content blockquote {margin: 20px 0; padding: 16px 22px; border-left: 3px solid var(--accent); background: var(--panel); border-radius: 0 10px 10px 0}
.lesson-content pre {max-width: 100%; overflow-x: auto; font-size: .82rem}
.lesson-content strong {color: var(--text)}
.lesson-footer {display: flex; justify-content: space-between; align-items: center; gap: 24px; border-top: 1px solid var(--line); margin-top: 40px; padding-top: 24px}
.completion-control {min-width: 0}
.complete {display: flex; align-items: center; gap: 10px; min-height: 44px; font-size: .83rem; cursor: pointer; color: var(--text)}
#progressSaveStatus {font-size: .7rem; color: var(--muted); margin: 4px 0 0}
.lesson-navigation {display: flex; gap: 10px; flex-shrink: 0}
.lesson-navigation button {font-size: .83rem; min-width: 115px}
.admin-panel {margin-top: 36px; padding: 20px; background: var(--panel); border: 1px solid var(--line); border-radius: 14px}
.admin-panel summary {cursor: pointer; font-size: .87rem; font-weight: 600; min-height: 36px}
.admin-panel form {display: flex; align-items: end; gap: 10px; flex-wrap: wrap; margin: 20px 0}
.admin-panel form label {flex: 1 1 240px}
.admin-panel input[type=email] {display: block; margin-top: 6px}
.admin-panel p, .admin-panel label, .admin-panel button {font-size: .8rem}
.enrolment {display: flex; justify-content: space-between; gap: 12px; padding: 10px 0; border-top: 1px solid var(--line); font-size: .75rem; overflow-wrap: anywhere}
.mobile-menu {display: none}
.module-dialog {max-width: min(390px, calc(100vw - 24px)); width: 100%; max-height: calc(100dvh - 24px); padding: 0; border: 1px solid #56654d; border-radius: 18px; color: var(--text); background: var(--panel); box-shadow: 0 24px 100px #00000066; overscroll-behavior: contain}
.module-dialog::backdrop {background: #050a07b8; backdrop-filter: blur(3px)}
body:has(.module-dialog[open]) {overflow: hidden}
.lesson-content .resource-note {display: block; margin: 6px 0 14px; color: var(--muted); font-size: .9rem; line-height: 1.6}
.page-footer {display: flex; justify-content: space-between; gap: 20px; max-width: 1440px; margin: auto; padding: 24px 28px max(28px, env(safe-area-inset-bottom)); border-top: 1px solid var(--line); font-size: .72rem; color: var(--muted)}
.page-footer nav {display: flex; gap: 18px; flex-wrap: wrap}
.page-footer a {color: var(--muted)}
@media (max-width: 1100px) {
  .classroom {grid-template-columns: 280px minmax(0, 1fr); column-gap: 24px; padding-inline: 22px}
  .course-overview {padding: 24px; gap: 28px}
  .learning-progress {flex-basis: 260px}
  #accountName {max-width: 120px}
  .lesson-footer {flex-wrap: wrap}
  .lesson-navigation {margin-left: auto}
}
@media (max-width: 900px) {
  .classroom {grid-template-columns: minmax(0, 1fr); padding: 22px 24px 44px}
  .course-overview {margin-bottom: 24px; gap: 24px}
  .course-heading h1 {font-size: 1.5rem}
  .learning-progress {flex-basis: 245px}
  .lesson-panel {padding: 0}
  .lesson-top {margin-bottom: 20px}
  .mobile-menu {display: inline-flex; align-items: center; justify-content: center; gap: 8px; min-height: 44px; font-size: .8rem}
  .close-modules {display: block}
  .module-dialog .sidebar {position: static; margin: 0; border: 0; max-height: none; border-radius: 0; padding: 22px 14px; width: 100%; overflow: visible}
  .sidebar-heading h2 {margin-bottom: 16px}
  .topbar {padding-inline: 24px}
  #accountName {display: none}
  .access {column-gap: 30px; padding-top: 40px}
  .access h1 {font-size: 3rem}
}
@media (max-width: 650px) {
  :root {--topbar-height: 69px}
  .topbar {padding: 10px 16px; gap: 10px}
  .brand {display: block; min-height: 44px}
  .wordmark {display: block; font-size: 1.2rem}
  .brand-course {display: block; border: 0; padding: 0; font-size: .64rem; line-height: 1.4; margin-top: 3px}
  .account-actions {gap: 8px}
  .back-link {padding: 9px 11px; font-size: .7rem}
  #signOut {padding: 9px 11px; font-size: .72rem}
  .access {grid-template-columns: minmax(0, 1fr); grid-template-areas: 'intro' 'account' 'offer'; padding: 26px 18px 40px; gap: 24px}
  .access-intro {padding: 0}
  .course-symbol {width: 44px; height: 44px; margin-bottom: 14px; border-radius: 12px}
  .course-symbol svg {width: 30px; height: 30px}
  .access h1 {font-size: clamp(2.3rem, 9vw, 3rem); margin-bottom: 16px}
  .intro {font-size: .93rem}
  .access-jump {display: inline-flex; align-items: center; justify-content: center; gap: 12px; min-height: 44px; padding: 9px 16px; margin-top: 4px; border-radius: 10px; background: var(--accent); color: var(--accent-ink); font-size: .85rem; font-weight: 650; text-decoration: none}
  .course-facts {margin: 18px 0 0; gap: 7px; font-size: .72rem}
  .course-facts span {padding: 6px 9px}
  .course-prices>div {padding: 13px 0; gap: 15px; font-size: .8rem}
  .course-prices>div>span {max-width: 185px}
  .course-prices strong {font-size: 1.08rem}
  .access-note {font-size: .75rem}
  .access-card {padding: 22px; border-radius: 18px}
  .access-card h2 {font-size: 1.5rem}
  .classroom {padding: 18px 16px 36px}
  .course-overview {display: block; padding: 16px; margin-bottom: 20px; border-radius: 16px}
  .course-heading h1 {font-size: 1.18rem; line-height: 1.35; margin: 8px 0 0}
  .course-heading>p {font-size: .78rem}
  .learning-progress {display: grid; grid-template-columns: minmax(0, 1fr) 104px; gap: 6px 14px; align-items: center; margin-top: 14px; padding-top: 14px; border-top: 1px solid var(--line)}
  .learning-progress .progress-heading, .learning-progress progress, .learning-progress #progressText {grid-column: 1}
  .learning-progress progress {margin-top: 0; height: 6px}
  .learning-progress #progressText {margin: 0; font-size: .67rem; line-height: 1.45}
  .learning-progress .resume {grid-column: 2; grid-row: 1 / 4; min-height: 48px; padding: 8px 10px; font-size: .75rem}
  .progress-heading {font-size: .78rem}
  .lesson-top {gap: 10px; margin-bottom: 18px; font-size: .72rem}
  .quick-navigation {gap: 6px}
  .draft {margin-left: 0}
  .lesson-heading {margin-bottom: 20px}
  .lesson-heading h2 {font-size: clamp(1.5rem, 6vw, 1.8rem); line-height: 1.25}
  .lesson-content p, .lesson-content li {font-size: 1rem}
  .lesson-content section+section {margin-top: 24px}
  .lesson-content video, .lesson-content iframe {border-radius: 10px}
  .lesson-footer {display: block; margin-top: 30px; padding-top: 20px}
  .complete {font-size: .87rem}
  .lesson-navigation {margin-top: 18px; display: grid; grid-template-columns: 1fr 1fr}
  .lesson-navigation button {min-height: 48px; min-width: 0; font-size: .83rem}
  .admin-panel {padding: 16px}
  .enrolment {display: block}
  .enrolment>span {display: block}
  .page-footer {display: block; padding: 22px 18px max(24px, env(safe-area-inset-bottom))}
  .page-footer nav {margin-top: 12px; gap: 12px 18px}
  .page-footer a {display: inline-flex; align-items: center; min-height: 36px}
}
@media (prefers-reduced-motion: reduce) {
  *, *::before, *::after {scroll-behavior: auto !important; transition: none !important; animation: none !important}
}