@charset "UTF-8";
:root {
  --cloud:#f7f9fc;
  --paper:#fff;
  --ink:#192d4b;
  --blue:#2966c6;
  --blue-soft:#eaf2fe;
  --amber:#eda93e;
  --slate:#6c7a91;
  --teal:#297968;
  --line:#e4eaf2;
  --serif:Georgia,'Times New Roman',serif;
  --sans:'Segoe UI','Microsoft YaHei','PingFang SC',sans-serif;
  --sidebar:232px
}

* {
  box-sizing:border-box
}

html {
  scroll-behavior:smooth;
  scroll-padding-top:98px
}

body {
  margin:0;
  background:var(--cloud);
  color:var(--ink);
  font-family:var(--sans);
  font-size:14px;
  line-height:1.7;
  -webkit-font-smoothing:antialiased
}

button,input,textarea {
  font:inherit
}

button,a,input,textarea,summary {
  -webkit-tap-highlight-color:transparent
}

button {
  cursor:pointer
}

a {
  color:inherit;
  text-decoration:none
}

button {
  color:inherit
}

button:disabled {
  cursor:default
}

img {
  display:block;
  max-width:100%
}

p,h1,h2,h3,figure,blockquote {
  margin:0
}

h1,h2,h3 {
  line-height:1.35
}

h2 {
  font-size:24px;
  letter-spacing:-.5px
}

h3 {
  font-size:19px
}

button {
  border:0;
  background:transparent
}

input,textarea {
  color:var(--ink)
}

input::placeholder,textarea::placeholder {
  color:#8793a5
}

textarea {
  resize:vertical
}

a:focus-visible,button:focus-visible,input:focus-visible,textarea:focus-visible,summary:focus-visible {
  outline:3px solid #86b1f3;
  outline-offset:4px;
  border-radius:4px
}

::selection {
  background:#d2e4ff
}

.icon {
  width:20px;
  height:20px;
  flex-shrink:0;
  vertical-align:middle
}

.icon-button {
  display:inline-flex;
  align-items:center;
  justify-content:center;
  width:34px;
  height:34px;
  border-radius:8px
}

.icon-button:hover {
  background:var(--blue-soft);
  color:var(--blue)
}

.text-button {
  display:inline-flex;
  align-items:center;
  justify-content:center;
  gap:8px;
  font-size:13px;
  font-weight:500;
  white-space:nowrap
}

.text-button:hover {
  color:var(--blue)
}

.text-button .icon {
  width:17px;
  height:17px
}

.button {
  display:inline-flex;
  justify-content:center;
  align-items:center;
  gap:14px;
  min-height:48px;
  padding:13px 21px;
  border-radius:7px;
  font-size:14px;
  font-weight:600;
  line-height:1.5;
  transition:background .18s,transform .18s
}

.button .icon {
  width:18px;
  height:18px
}

.button:hover {
  transform:translateY(-1px)
}

.primary {
  background:var(--blue);
  color:white;
  box-shadow:0 4px 12px #2966c61c
}

.primary:hover {
  background:#2158ae
}

.secondary {
  background:var(--paper);
  border:1px solid #d8e2ef;
  color:var(--ink)
}

.secondary:hover {
  background:var(--blue-soft);
  border-color:#bed3f3
}

.compact {
  min-height:39px;
  padding:9px 14px;
  font-size:12px;
  gap:8px
}

.subtle {
  color:var(--slate);
  font-size:12px
}

.eyebrow {
  font-size:10px;
  font-weight:650;
  letter-spacing:1.9px;
  color:var(--blue);
  line-height:1.5
}

.skip-link {
  position:fixed;
  top:-100px;
  left:12px;
  z-index:100;
  padding:12px 20px;
  background:var(--blue);
  color:#fff
}

.skip-link:focus {
  top:8px
}

.sr-only {
  position:absolute;
  width:1px;
  height:1px;
  padding:0;
  overflow:hidden;
  clip:rect(0,0,0,0);
  white-space:nowrap
}

.loading {
  padding:80px
}

.sidebar {
  position:fixed;
  inset:0 auto 0 0;
  width:var(--sidebar);
  background:var(--paper);
  border-right:1px solid var(--line);
  display:flex;
  flex-direction:column;
  padding:33px 20px 24px;
  z-index:40;
  overflow-y:auto
}

.brand {
  display:flex;
  align-items:flex-start;
  gap:10px;
  padding:0 14px;
  color:var(--ink);
  font-family:var(--serif);
  font-weight:700;
  font-size:30px;
  line-height:1.1;
  letter-spacing:-1.5px
}

.brand>.icon {
  width:31px;
  height:34px;
  color:var(--blue);
  margin-top:1px
}

.brand-dot {
  color:var(--blue)
}

.brand small {
  display:block;
  font:10px var(--sans);
  color:var(--slate);
  letter-spacing:1.2px;
  margin-top:10px
}

.lesson-label {
  display:flex;
  gap:12px;
  align-items:center;
  border-top:1px solid var(--line);
  border-bottom:1px solid var(--line);
  margin:31px 10px 25px;
  padding:20px 0;
  font-size:12px;
  font-weight:600
}

.lesson-number {
  font-size:17px;
  display:grid;
  place-items:center;
  width:36px;
  height:40px;
  background:var(--blue-soft);
  color:var(--blue);
  border-radius:6px;
  font-weight:650
}

.lesson-label small {
  display:block;
  font-size:10px;
  font-weight:400;
  color:var(--slate);
  margin-top:2px
}

.nav-caption {
  font-size:10px;
  color:#8c98a9;
  margin:0 15px 12px;
  letter-spacing:1px
}

.sidebar nav {
  display:flex;
  flex-direction:column;
  gap:5px
}

.nav-link {
  display:flex;
  align-items:center;
  gap:13px;
  padding:10px 14px;
  border-radius:7px;
  color:var(--slate);
  position:relative;
  min-height:53px
}

.nav-link>.icon {
  width:19px;
  height:19px
}

.nav-link>span {
  font-size:12px;
  font-weight:500
}

.nav-link small {
  display:block;
  font-size:9px;
  line-height:1.4;
  font-weight:400;
  letter-spacing:.3px;
  opacity:.7;
  margin-top:2px
}

.nav-link:hover {
  background:#f5f8fc;
  color:var(--ink)
}

.nav-link.active {
  background:var(--blue-soft);
  color:var(--blue)
}

.nav-link.active:before {
  content:'';
  position:absolute;
  left:-20px;
  width:3px;
  height:28px;
  background:var(--blue);
  border-radius:0 2px 2px 0
}

.nav-link .nav-count {
  margin-left:auto;
  font-size:10px;
  color:#8092aa;
  background:#f1f5fa;
  border-radius:4px;
  padding:0 5px
}

.sidebar-foot {
  margin-top:auto;
  padding:22px 13px 0
}

.reading-progress {
  display:flex;
  justify-content:space-between;
  font-size:11px;
  color:var(--slate);
  margin-bottom:9px
}

.reading-progress strong {
  font-weight:500;
  color:var(--ink)
}

.progress-track {
  height:4px;
  background:#edf1f7;
  border-radius:4px;
  overflow:hidden
}

.progress-track>div {
  height:100%;
  background:var(--blue);
  transition:width .3s
}

.sidebar-foot>p {
  font-size:9px;
  color:#92a0b2;
  margin-top:14px;
  display:flex;
  align-items:center;
  gap:4px
}

.sidebar-foot>p .icon {
  width:12px;
  height:12px
}

.workspace {
  margin-left:var(--sidebar)
}

.topbar {
  position:sticky;
  top:0;
  z-index:20;
  display:flex;
  justify-content:space-between;
  align-items:center;
  height:72px;
  padding:0 42px;
  background:#f7f9fcf2;
  backdrop-filter:blur(10px);
  border-bottom:1px solid var(--line)
}

.breadcrumb {
  display:flex;
  align-items:center;
  gap:13px;
  font-size:11px;
  color:var(--slate)
}

.breadcrumb>.icon {
  width:12px;
  height:12px;
  color:#aab4c1
}

.breadcrumb strong {
  font-weight:500;
  color:var(--ink)
}

.topbar-tools {
  display:flex;
  align-items:center;
  gap:23px
}

.level-tag {
  font-size:10px;
  letter-spacing:.8px;
  border:1px solid #d9e2ee;
  border-radius:4px;
  padding:2px 8px;
  color:var(--slate)
}

.topbar-tools .text-button {
  font-size:11px;
  color:var(--slate)
}

#main {
  max-width:1310px;
  margin:0 auto;
  padding:45px 50px 48px;
  outline:none;
  min-height:calc(100vh - 150px)
}

.page-footer {
  display:flex;
  justify-content:space-between;
  gap:20px;
  padding:23px 50px;
  border-top:1px solid var(--line);
  color:#8995a7;
  font-size:10px;
  max-width:1310px;
  margin:auto
}

.footer-sep {
  padding:0 8px;
  color:#c1cad7
}

.mobile-close,.menu-button,.mobile-backdrop {
  display:none
}

.hero {
  display:grid;
  grid-template-columns:1.06fr 1fr;
  gap:42px;
  align-items:center;
  min-height:430px
}

.hero-copy .eyebrow {
  display:flex;
  align-items:center;
  gap:9px;
  font-size:9px;
  letter-spacing:1.2px;
  margin-bottom:24px
}

.small-line {
  width:22px;
  height:2px;
  background:var(--blue)
}

.hero h1 {
  font-family:var(--serif);
  font-size:clamp(38px,3.8vw,59px);
  letter-spacing:-1.7px;
  line-height:1.09;
  font-weight:500
}

.hero h1 em {
  color:var(--blue);
  font-weight:400
}

.hero-subtitle {
  font-size:17px;
  font-weight:500;
  margin-top:22px;
  letter-spacing:.5px
}

.hero-description {
  font-size:12px;
  color:var(--slate);
  line-height:1.95;
  max-width:385px;
  margin-top:11px
}

.hero-actions {
  display:flex;
  gap:22px;
  align-items:center;
  margin-top:25px
}

.hero-actions .text-button {
  font-size:11px
}

.hero-meta {
  display:flex;
  gap:14px;
  font-size:9px;
  color:#8090a4;
  margin-top:22px;
  white-space:nowrap
}

.hero-meta span {
  display:flex;
  align-items:center;
  gap:5px
}

.hero-meta .icon {
  width:13px;
  height:13px
}

.hero-visual {
  position:relative;
  margin-top:3px;
  padding-bottom:25px
}

.hero-visual>img {
  width:100%;
  height:385px;
  object-fit:cover;
  object-position:50% 50%;
  border-radius:48% 48% 9px 9px
}

.hero-visual>figcaption {
  position:absolute;
  bottom:0;
  left:22px;
  right:22px;
  background:white;
  border:1px solid var(--line);
  border-radius:7px;
  box-shadow:0 8px 26px #233c5b08;
  padding:15px 20px;
  display:flex;
  justify-content:space-between;
  align-items:center;
  gap:12px;
  font-size:13px;
  font-weight:500
}

.caption-kicker {
  font-size:8px;
  letter-spacing:1.3px;
  color:var(--slate)
}

.image-credit {
  position:absolute;
  right:13px;
  bottom:65px;
  color:white;
  font-size:8px;
  text-shadow:0 1px 4px #243446
}

.news-strip {
  margin-top:39px;
  padding:20px 23px;
  border-top:1px solid var(--line);
  border-bottom:1px solid var(--line);
  display:flex;
  align-items:center;
  justify-content:space-between;
  gap:15px
}

.news-intro {
  display:flex;
  gap:12px;
  align-items:center
}

.news-intro>.icon {
  width:23px;
  height:23px;
  color:var(--blue)
}

.news-intro strong {
  font-size:11px
}

.news-strip span {
  display:block;
  font-size:9px;
  color:var(--slate);
  margin-top:3px
}

.news-strip>div:not(.news-intro)>strong {
  font-family:var(--serif);
  font-weight:400;
  font-size:24px;
  line-height:1.2;
  white-space:nowrap
}

.news-strip strong>span {
  display:inline;
  font-size:18px;
  color:var(--ink)
}

.news-strip>a {
  display:flex;
  align-items:center;
  gap:12px;
  font-size:10px;
  color:var(--blue);
  max-width:170px
}

.news-strip>a>.icon {
  width:15px;
  height:15px
}

.section-heading {
  display:flex;
  justify-content:space-between;
  align-items:center;
  gap:20px;
  margin-bottom:23px
}

.section-heading .eyebrow {
  margin-bottom:7px;
  font-size:9px
}

.section-heading h2 {
  font-size:22px
}

.story-section {
  padding-top:41px
}

.story-grid {
  display:grid;
  grid-template-columns:repeat(3,1fr);
  gap:28px
}

.story-item {
  position:relative;
  padding:19px 0 18px;
  border-top:2px solid var(--line)
}

.story-item:hover {
  border-top-color:var(--blue)
}

.story-label {
  font-size:10px;
  color:var(--slate)
}

.story-art {
  display:inline-flex;
  align-items:center;
  justify-content:center;
  position:absolute;
  right:0;
  top:14px;
  width:35px;
  height:35px;
  border-radius:10px;
  color:var(--blue);
  background:var(--blue-soft)
}

.story-art.teal {
  background:#e9f4ef;
  color:var(--teal)
}

.story-art.amber {
  background:#fff3de;
  color:#b07816
}

.story-art .icon {
  width:18px;
  height:18px
}

.story-item h3 {
  font-size:17px;
  margin:19px 0 10px;
  font-weight:600
}

.story-item p {
  font-size:11px;
  color:var(--slate);
  line-height:1.9;
  max-width:220px
}

.story-link {
  font-size:9px;
  color:var(--blue);
  display:flex;
  align-items:center;
  justify-content:space-between;
  gap:5px;
  margin-top:15px;
  white-space:nowrap
}

.story-link .icon {
  width:14px;
  height:14px
}

.learning-section {
  padding-top:28px
}

.learning-path {
  background:white;
  border:1px solid var(--line);
  border-radius:8px;
  overflow:hidden
}

.learning-path button {
  display:flex;
  gap:17px;
  align-items:center;
  width:100%;
  padding:16px 20px;
  text-align:left;
  border-bottom:1px solid #edf1f6;
  font-size:11px
}

.learning-path button:last-child {
  border-bottom:0
}

.learning-path button:hover {
  background:#f2f7fe
}

.learning-path button>.icon:first-child {
  color:var(--blue);
  width:18px;
  height:18px
}

.learning-path button strong {
  min-width:90px;
  font-weight:500
}

.learning-path button span {
  color:var(--slate)
}

.learning-path button>.icon:last-child {
  margin-left:auto;
  width:14px;
  height:14px;
  color:#91a1b7
}

.study-note {
  display:flex;
  gap:12px;
  background:#edf3fb;
  border-left:3px solid #91b4e8;
  border-radius:0 5px 5px 0;
  padding:18px 20px;
  margin-top:27px;
  font-size:11px;
  color:#637692
}

.study-note>.icon {
  color:var(--blue);
  width:17px;
  height:17px
}

.study-note strong {
  color:var(--ink);
  font-weight:500
}

.study-note em {
  font-family:var(--serif)
}

.page-heading {
  display:flex;
  justify-content:space-between;
  align-items:flex-end;
  gap:30px;
  margin-bottom:32px
}

.page-heading .eyebrow {
  margin-bottom:9px
}

.page-heading h1 {
  font-size:34px;
  letter-spacing:-.8px;
  font-weight:600
}

.page-heading p:not(.eyebrow) {
  font-size:12px;
  color:var(--slate);
  margin-top:12px;
  max-width:680px
}

.reading-toolbar {
  display:flex;
  justify-content:space-between;
  align-items:center;
  gap:18px;
  padding:13px 17px;
  background:white;
  border:1px solid var(--line);
  border-radius:7px;
  margin-bottom:30px
}

.paragraph-jumps {
  display:flex;
  gap:5px
}

.paragraph-jumps a {
  font:14px var(--serif);
  display:grid;
  place-items:center;
  width:28px;
  height:28px;
  border-radius:4px;
  color:var(--slate)
}

.paragraph-jumps a:hover,.paragraph-jumps a.done {
  color:var(--blue);
  background:var(--blue-soft)
}

.reading-toolbar>.subtle {
  display:flex;
  gap:7px;
  align-items:center;
  font-size:10px
}

.reading-toolbar>.subtle>.icon {
  width:15px;
  height:15px
}

.reading-layout {
  display:grid;
  grid-template-columns:minmax(0,1fr) 190px;
  gap:36px;
  align-items:start
}

.article-stream {
  min-width:0
}

.paragraph {
  background:white;
  border:1px solid var(--line);
  border-radius:9px;
  padding:29px 30px;
  margin-bottom:24px;
  scroll-margin-top:96px
}

.paragraph-heading {
  display:flex;
  align-items:center;
  gap:13px;
  margin-bottom:22px
}

.paragraph-letter {
  font:24px var(--serif);
  width:42px;
  height:47px;
  border:1px solid #d6e4f8;
  background:var(--blue-soft);
  color:var(--blue);
  display:grid;
  place-items:center;
  border-radius:5px
}

.paragraph-tag {
  font-size:9px;
  letter-spacing:1px;
  color:var(--slate)
}

.paragraph-heading h2 {
  font-size:18px;
  letter-spacing:0;
  margin-top:2px
}

.read-button {
  margin-left:auto;
  color:#92a0b2;
  font-size:10px;
  display:flex;
  gap:4px;
  align-items:center;
  white-space:nowrap;
  padding:5px
}

.read-button>.icon {
  width:14px;
  height:14px
}

.read-button.is-read {
  color:var(--teal)
}

.english-passage {
  font-family:var(--serif);
  font-size:19px;
  line-height:1.95;
  letter-spacing:.05px;
  color:#263d59
}

.word-mark {
  font:inherit;
  color:var(--blue);
  padding:0;
  border-bottom:1px dashed #9fbce9;
  line-height:1.25;
  display:inline;
  vertical-align:baseline
}

.word-mark:hover {
  background:var(--blue-soft)
}

.core-word {
  border-bottom:2px solid #a6c2ec
}

.takeaway {
  display:flex;
  gap:9px;
  padding:14px 0;
  font-size:11px;
  color:#647994;
  align-items:flex-start;
  margin-top:14px
}

.takeaway>.icon {
  width:15px;
  height:15px;
  color:#b38a35;
  margin-top:2px
}

details {
  border-top:1px solid var(--line)
}

summary {
  display:flex;
  align-items:center;
  gap:8px;
  cursor:pointer;
  font-size:11px;
  padding:15px 0;
  color:#587198;
  list-style:none
}

summary::-webkit-details-marker {
  display:none
}

summary:after {
  content:'+';
  margin-left:auto;
  font-size:17px;
  line-height:1;
  color:#8398b5
}

details[open]>summary:after {
  content:'−'
}

summary>.icon {
  display:none
}

summary:hover {
  color:var(--blue)
}

.explanation-content {
  padding-bottom:20px;
  font-size:12px;
  color:#60718a;
  line-height:2.05
}

.retrieval {
  background:#f8fafc;
  padding:15px 17px;
  margin-top:16px;
  border-radius:5px
}

.retrieval>strong {
  font-size:11px;
  font-weight:500;
  color:var(--ink)
}

.retrieval details {
  border:0;
  margin-top:6px
}

.retrieval summary {
  padding:3px 0;
  display:inline-flex
}

.retrieval summary:after {
  font-size:12px;
  padding-left:5px
}

.retrieval p {
  margin-top:8px;
  font-size:11px
}

.lesson-figure {
  margin-top:12px
}

.lesson-figure>button {
  position:relative;
  display:block;
  padding:0;
  width:100%;
  border-radius:6px;
  overflow:hidden;
  border:1px solid var(--line)
}

.lesson-figure img {
  width:100%;
  height:auto;
  aspect-ratio:1.8;
  object-fit:contain;
  background:#f5f8fc
}

.lesson-figure>button>.icon {
  position:absolute;
  right:10px;
  bottom:10px;
  color:white;
  background:#192d4b80;
  border-radius:4px;
  width:25px;
  height:25px;
  padding:4px
}

.lesson-figure figcaption {
  font-size:9px;
  color:var(--slate);
  margin-top:7px;
  display:flex;
  justify-content:space-between;
  gap:10px
}

.lesson-figure figcaption>span {
  color:#8d9bb0
}

.reading-aside {
  position:sticky;
  top:106px;
  padding-top:11px
}

.reading-aside h3 {
  font-size:19px;
  font-weight:500;
  line-height:1.7;
  margin:12px 0 25px
}

.evidence-key {
  display:flex;
  gap:10px;
  margin-bottom:21px
}

.evidence-dot {
  width:7px;
  height:7px;
  flex-shrink:0;
  border-radius:50%;
  margin-top:7px
}

.evidence-dot.blue {
  background:var(--blue)
}

.evidence-dot.amber {
  background:var(--amber)
}

.evidence-dot.teal {
  background:var(--teal)
}

.evidence-key strong {
  font-size:11px;
  font-weight:500
}

.evidence-key p {
  font-size:10px;
  color:var(--slate);
  line-height:1.85;
  margin-top:4px
}

.reading-aside blockquote {
  font:italic 27px/1.65 var(--serif);
  color:#6b8fbf;
  border-top:1px solid var(--line);
  padding-top:22px;
  margin-top:29px
}

.reading-aside>.subtle {
  font-size:9px;
  margin-top:12px
}

.explainer {
  background:#f7faff;
  border:1px solid #e1eaf6;
  border-radius:6px;
  padding:18px 19px;
  margin:6px 0 16px
}

.explainer-title {
  display:flex;
  justify-content:space-between;
  gap:15px;
  font-size:11px;
  font-weight:600;
  align-items:center;
  margin-bottom:15px
}

.explainer-title>.subtle {
  font-size:8px;
  font-weight:400
}

.explainer>p {
  font-size:10px;
  color:var(--slate);
  margin-top:14px
}

.revision-table>div {
  display:flex;
  align-items:center;
  justify-content:space-between;
  gap:12px;
  font-size:11px;
  padding:7px 0
}

.revision-table strong {
  font-size:12px;
  font-weight:500;
  min-width:40px
}

.revision-table span {
  display:flex;
  gap:9px;
  align-items:center;
  white-space:nowrap;
  color:var(--slate)
}

.revision-table .icon {
  width:15px;
  height:15px;
  color:#9caec6
}

.revision-table b {
  color:var(--ink);
  font-weight:500
}

.revision-table em {
  font-style:normal;
  color:var(--blue);
  font-size:11px
}

.sector-row {
  display:grid;
  grid-template-columns:90px 1fr 73px;
  gap:10px;
  align-items:center;
  font-size:10px;
  margin:10px 0
}

.bar-axis {
  position:relative;
  padding-left:29%;
  height:17px
}

.bar-axis:before {
  position:absolute;
  content:'';
  height:100%;
  left:29%;
  width:1px;
  background:#a8b7cb
}

.sector-bar {
  height:100%;
  background:#7ea8e3;
  border-radius:0 3px 3px 0;
  position:relative
}

.sector-bar.negative {
  background:#d7a85d;
  transform:translateX(-100%);
  border-radius:3px 0 0 3px
}

.sector-row strong {
  font-weight:600;
  color:var(--blue);
  text-align:right
}

.sector-row .negative-text {
  color:#9b7130
}

.people-options {
  display:grid;
  grid-template-columns:1fr 1fr;
  gap:7px
}

.people-options button {
  display:flex;
  gap:8px;
  align-items:center;
  text-align:left;
  font-size:10px;
  padding:11px;
  background:white;
  border:1px solid var(--line);
  border-radius:4px
}

.people-options button>.icon {
  width:15px;
  height:15px;
  color:var(--blue)
}

.people-options button.selected {
  border-color:#95b7e9;
  background:var(--blue-soft)
}

.slider-grid {
  display:grid;
  grid-template-columns:1fr 1fr;
  gap:24px
}

.slider-grid label {
  display:block;
  font-size:11px
}

.slider-grid output {
  float:right;
  color:var(--blue);
  font-weight:600
}

.slider-grid input {
  display:block;
  width:100%;
  margin:12px 0 0;
  accent-color:var(--blue)
}

.purchasing-result {
  display:flex;
  align-items:center;
  justify-content:space-between;
  gap:12px;
  margin-top:19px;
  padding-top:13px;
  border-top:1px solid #dce5f2;
  font-size:10px
}

.purchasing-result strong {
  font:23px var(--serif);
  color:#ac7332;
  white-space:nowrap
}

.purchasing-result strong.positive {
  color:var(--teal)
}

.purchasing-result>span:last-child {
  max-width:170px;
  color:var(--slate);
  font-size:9px
}

.policy-flow {
  display:flex;
  align-items:center;
  gap:5px;
  font-size:9px
}

.policy-flow>span {
  flex:1;
  text-align:center;
  padding:8px 4px;
  background:white;
  border:1px solid var(--line);
  border-radius:4px
}

.policy-flow>.icon {
  width:12px;
  height:12px;
  color:#8ca8cc
}

.policy-outcomes {
  display:flex;
  justify-content:center;
  gap:10px;
  margin-top:12px;
  font-size:10px
}

.policy-outcomes>span {
  padding:6px 12px;
  border-radius:3px;
  background:#e5f0ec;
  color:var(--teal)
}

.policy-outcomes>span:last-child {
  background:#fff0d8;
  color:#a37c30
}

.next-section {
  border-top:1px solid var(--line);
  display:flex;
  align-items:center;
  justify-content:space-between;
  gap:20px;
  margin-top:33px;
  padding-top:28px
}

.next-section .eyebrow {
  font-size:9px
}

.next-section h3 {
  font-size:16px;
  margin-top:6px
}

.vocab-toolbar {
  display:flex;
  align-items:center;
  justify-content:space-between;
  gap:16px;
  margin-bottom:21px
}

.search-box {
  display:flex;
  align-items:center;
  gap:10px;
  background:white;
  border:1px solid #dce5f0;
  border-radius:6px;
  padding:10px 14px;
  flex:1;
  max-width:430px
}

.search-box>.icon {
  width:17px;
  height:17px;
  color:#8ea0b8
}

.search-box input {
  width:100%;
  border:0;
  outline:none;
  background:transparent;
  font-size:12px;
  min-width:0
}

.filter-buttons {
  display:flex;
  border:1px solid #dce5f0;
  padding:3px;
  border-radius:6px;
  background:white;
  gap:3px
}

.filter-buttons button {
  font-size:11px;
  white-space:nowrap;
  padding:6px 14px;
  border-radius:4px;
  color:var(--slate)
}

.filter-buttons button.active {
  background:var(--blue-soft);
  color:var(--blue)
}

.result-count {
  font-size:10px;
  color:var(--slate);
  margin-bottom:15px
}

.vocab-grid {
  display:grid;
  grid-template-columns:repeat(2,minmax(0,1fr));
  gap:20px;
  align-items:start
}

.vocab-card {
  border:1px solid var(--line);
  border-radius:8px;
  background:white;
  padding:23px 24px;
  min-width:0
}

.vocab-top {
  display:flex;
  justify-content:space-between;
  align-items:center;
  margin-bottom:9px
}

.vocab-id {
  font-size:10px;
  color:#9ca8b9;
  display:flex;
  gap:9px;
  align-items:center
}

.core-tag {
  font-size:9px;
  color:#b18029;
  background:#fff4df;
  padding:1px 6px;
  border-radius:3px
}

.save-word {
  color:#91a1b7;
  width:26px;
  height:26px
}

.save-word .icon {
  width:17px;
  height:17px
}

.save-word.saved {
  color:var(--blue);
  background:var(--blue-soft)
}

.save-word.saved .icon {
  fill:#d7e7ff
}

.vocab-card h2 {
  font:25px/1.4 var(--serif);
  letter-spacing:-.4px;
  display:flex;
  align-items:center;
  justify-content:space-between;
  gap:8px
}

.pronounce {
  color:#8ba1c1;
  width:26px;
  height:26px
}

.pronounce .icon {
  width:16px;
  height:16px
}

.ipa {
  font-size:10px;
  color:var(--slate);
  margin-top:8px;
  line-height:1.65
}

.word-gloss {
  font-size:13px;
  color:var(--blue);
  font-weight:500;
  margin-top:12px
}

.definition {
  font-size:12px;
  color:#64738a;
  margin-top:9px;
  line-height:1.8;
  min-height:44px
}

.collocation {
  display:flex;
  flex-direction:column;
  gap:5px;
  background:#f7f9fc;
  border-radius:4px;
  padding:11px 13px;
  margin:15px 0 8px
}

.collocation span {
  font-size:9px;
  color:#8294ac
}

.collocation strong {
  font-size:12px;
  font-weight:500
}

.vocab-card summary {
  padding:11px 0 0;
  font-size:10px
}

.word-details {
  font-size:12px;
  line-height:1.8;
  color:#5e718e;
  padding-top:18px
}

.field-label {
  font-size:8px;
  letter-spacing:1px;
  color:#8a9bb2;
  margin:14px 0 5px
}

.field-label:first-child {
  margin-top:0
}

.learner-note {
  display:flex;
  gap:8px;
  padding:12px;
  background:#fff9ef;
  font-size:11px;
  color:#8c7349;
  border-radius:4px;
  margin-top:16px
}

.learner-note>.icon {
  width:14px;
  height:14px;
  margin-top:3px
}

.source-fold {
  margin-top:28px;
  border-top:1px solid var(--line);
  border-bottom:1px solid var(--line)
}

.source-fold summary {
  font-size:12px;
  padding:18px 2px
}

.prose {
  font-size:12px;
  line-height:1.9;
  color:#61718a;
  padding:0 0 22px;
  overflow-wrap:anywhere
}

.prose h2,.prose h3,.prose h4 {
  font-size:16px;
  margin:23px 0 12px;
  color:var(--ink);
  letter-spacing:0
}

.prose p {
  margin:10px 0
}

.prose li {
  margin:8px 0
}

.prose strong {
  color:#334e70;
  font-weight:600
}

.table-wrap {
  overflow-x:auto;
  margin:14px 0
}

.prose table {
  border-collapse:collapse;
  min-width:100%;
  font-size:10px
}

.prose td {
  border:1px solid var(--line);
  padding:8px 11px;
  min-width:100px
}

.prose tr:first-child {
  background:var(--blue-soft);
  font-weight:600
}

.empty-state {
  padding:50px 24px;
  text-align:center;
  background:white;
  border:1px dashed #cfdae9;
  border-radius:7px;
  grid-column:1/-1
}

.empty-state>.icon {
  color:#8ba5c8;
  width:30px;
  height:30px;
  margin-bottom:12px
}

.empty-state h3 {
  font-size:17px
}

.empty-state p {
  font-size:12px;
  color:var(--slate);
  margin:10px 0 20px
}

.grammar-list {
  display:flex;
  flex-direction:column;
  gap:22px
}

.grammar-card {
  background:white;
  border:1px solid var(--line);
  border-radius:8px;
  padding:27px 30px
}

.grammar-title {
  display:flex;
  align-items:center;
  gap:18px
}

.grammar-number {
  font:21px var(--serif);
  color:#98afd0
}

.grammar-title .eyebrow {
  font-size:9px;
  letter-spacing:.7px
}

.grammar-title h2 {
  font-size:19px;
  letter-spacing:0;
  margin-top:5px
}

.grammar-origin {
  margin-left:auto;
  font-size:10px;
  color:var(--slate)
}

.sentence-chunks {
  margin:27px 0 18px;
  display:flex;
  flex-wrap:wrap;
  gap:10px
}

.chunk {
  background:#eff5fd;
  border-bottom:2px solid #a7c3e9;
  display:flex;
  flex-direction:column;
  align-items:flex-start;
  text-align:left;
  padding:12px 13px;
  border-radius:4px;
  font:20px/1.65 var(--serif)
}

.chunk small {
  font:9px var(--sans);
  color:#7088a6;
  margin-top:4px
}

.chunk-1 {
  background:#eef5f1;
  border-color:#a8cdbc
}

.chunk-2 {
  background:#fff6e5;
  border-color:#e8c680
}

.chunk-3 {
  background:#f0f2f7;
  border-color:#bbc5d7
}

.chunk.selected {
  box-shadow:0 0 0 2px #87ace1
}

.grammar-tip {
  font-size:12px;
  color:#687f9d;
  margin:15px 0 20px
}

.grammar-card>details {
  margin-top:17px
}

.grammar-card>details .prose {
  max-width:760px
}

.practice-switch {
  display:flex;
  gap:28px;
  border-bottom:1px solid var(--line);
  margin-bottom:32px;
  font-size:12px
}

.practice-switch a {
  padding:11px 0;
  border-bottom:2px solid var(--blue)
}

.practice-switch span {
  font-size:10px;
  color:var(--slate);
  margin-left:6px
}

.question-group {
  padding:15px 0 6px;
  margin-top:15px
}

.question-group>span {
  font-size:16px;
  font-weight:500
}

.question-group p {
  font-size:11px;
  color:var(--slate);
  margin:6px 0 10px
}

.question {
  border:0;
  border-bottom:1px solid var(--line);
  margin:0;
  padding:16px 0 23px;
  min-width:0
}

.question legend {
  font-family:var(--serif);
  font-size:17px;
  line-height:1.7;
  padding:0;
  width:100%;
  display:flex;
  gap:12px;
  align-items:flex-start
}

.question-number {
  font:11px var(--sans);
  background:#e8eff8;
  border-radius:4px;
  display:inline-grid;
  place-items:center;
  min-width:25px;
  height:25px;
  margin-top:4px;
  color:#637e9f;
  flex-shrink:0
}

.answer-options {
  display:flex;
  flex-direction:column;
  gap:8px;
  padding-left:37px;
  margin-top:13px
}

.answer-options label {
  display:flex;
  align-items:flex-start;
  gap:9px;
  font-size:12px;
  color:#5a6f8a;
  cursor:pointer;
  padding:11px 13px;
  border:1px solid var(--line);
  background:white;
  border-radius:5px
}

.answer-options label:has(input:checked) {
  border-color:#8cafdf;
  background:var(--blue-soft);
  color:var(--ink)
}

.answer-options input {
  accent-color:var(--blue);
  margin:4px 0 0;
  flex-shrink:0
}

.answer-options b {
  display:inline-block;
  min-width:22px;
  font-weight:500
}

.tf-options {
  flex-direction:row;
  flex-wrap:wrap
}

.tf-options label {
  font-size:10px;
  padding:8px 14px;
  min-width:100px;
  align-items:center
}

.tf-options input {
  margin:0
}

.answer-input {
  display:block;
  border:1px solid #d5dfed;
  background:white;
  padding:11px 13px;
  border-radius:5px;
  font-size:12px;
  max-width:370px;
  width:100%;
  margin-top:13px
}

.question>.answer-input {
  margin-left:37px;
  width:calc(100% - 37px)
}

.feedback {
  margin:17px 0 0 37px;
  font-size:12px;
  color:#647994;
  padding:14px 16px;
  background:#eef3fa;
  border-radius:5px
}

.feedback[hidden] {
  display:none
}

.answer-result {
  display:flex;
  gap:8px;
  align-items:center;
  font-size:11px;
  margin-bottom:9px
}

.answer-result>.icon {
  width:15px;
  height:15px
}

.answer-result.correct {
  color:var(--teal)
}

.answer-result.incorrect {
  color:#9f7a37
}

.answer-result strong {
  font-weight:500
}

.answer-result a {
  margin-left:auto;
  display:flex;
  gap:5px;
  align-items:center;
  color:var(--blue);
  font-size:10px
}

.answer-result a>.icon {
  width:12px;
  height:12px
}

.submit-row {
  display:flex;
  gap:13px;
  align-items:center;
  padding-top:25px;
  flex-wrap:wrap
}

.submit-row>span {
  font-size:12px;
  color:var(--blue);
  margin-left:auto
}

.vocab-practice-section {
  margin-top:52px;
  scroll-margin-top:96px
}

.section-description {
  color:var(--slate);
  font-size:12px;
  margin-top:-10px;
  margin-bottom:22px
}

.practice-group {
  background:white;
  border:1px solid var(--line);
  border-radius:7px;
  margin-bottom:12px
}

.practice-group>summary {
  padding:19px 22px;
  gap:15px;
  color:var(--ink);
  font-size:14px
}

.practice-group-letter {
  font:21px var(--serif);
  color:#88a4cb
}

.practice-group small {
  font-size:10px;
  color:var(--slate);
  margin-left:9px
}

.practice-group-content {
  padding:0 22px 19px
}

.vocab-question {
  border-top:1px solid var(--line);
  padding:22px 0
}

.vocab-question>label {
  display:block;
  font-size:14px;
  line-height:1.8;
  font-family:var(--serif)
}

.vocab-question>label>strong {
  font:11px var(--sans);
  color:var(--blue);
  margin-right:10px
}

.vocab-question textarea {
  width:100%;
  border:1px solid #d9e2ee;
  border-radius:5px;
  min-height:80px;
  margin-top:13px;
  padding:12px;
  font-size:12px
}

.vocab-question>details {
  border:0;
  margin-top:10px
}

.vocab-question>details>summary {
  display:inline-flex;
  padding:4px 0;
  font-size:10px
}

.vocab-question>details>summary:after {
  padding-left:12px;
  font-size:12px
}

.practice-answer {
  font-size:12px;
  color:#617792;
  line-height:1.85;
  margin-top:9px;
  padding:13px 15px;
  background:var(--blue-soft);
  border-radius:4px
}

.writing-prompt {
  padding:27px 31px;
  background:white;
  border:1px solid var(--line);
  border-left:3px solid #8eafe0;
  border-radius:6px;
  margin-bottom:32px
}

.writing-prompt>p {
  font:20px/1.8 var(--serif);
  margin-top:13px;
  max-width:800px
}

.writing-prompt>p>strong {
  font-size:17px;
  font-weight:400;
  color:var(--blue)
}

.prompt-meta {
  display:flex;
  gap:22px;
  font-size:11px;
  color:var(--slate);
  margin-top:20px
}

.prompt-meta span {
  display:flex;
  align-items:center;
  gap:7px
}

.prompt-meta .icon {
  width:15px;
  height:15px
}

.writing-layout {
  display:grid;
  grid-template-columns:minmax(0,1fr) 220px;
  gap:32px
}

.editor-heading {
  display:flex;
  justify-content:space-between;
  align-items:center;
  margin-bottom:13px;
  gap:12px
}

.editor-heading h2 {
  font-size:18px
}

.save-status {
  font-size:10px;
  color:#8c9cb1
}

.writing-editor {
  display:block;
  width:100%;
  min-height:440px;
  background:white;
  border:1px solid #d8e2ee;
  border-radius:7px;
  padding:23px 25px;
  font:17px/1.9 var(--serif)
}

.editor-footer {
  display:flex;
  justify-content:space-between;
  align-items:center;
  font-size:11px;
  color:var(--slate);
  padding:12px 2px;
  gap:12px
}

.editor-footer .text-button {
  font-size:11px
}

.writing-guide {
  padding:12px 0
}

.writing-guide h3 {
  font-size:18px;
  margin-top:8px
}

.writing-guide ol {
  padding-left:20px;
  font-size:11px;
  color:#8ba4c6;
  margin-top:24px
}

.writing-guide li {
  padding-left:4px;
  margin-bottom:19px
}

.writing-guide strong {
  color:var(--ink);
  font-size:11px;
  font-weight:500
}

.writing-guide p {
  color:var(--slate);
  line-height:1.85;
  font-size:10px;
  margin-top:6px
}

.guide-language {
  padding:19px 0;
  border-top:1px solid var(--line)
}

.guide-language p {
  font-family:var(--serif);
  font-size:16px;
  color:#748fac;
  line-height:1.8
}

.challenge-section {
  padding:28px;
  background:#edf3fb;
  border:1px solid #dce6f3;
  border-radius:8px;
  margin-top:40px;
  display:grid;
  grid-template-columns:1fr 1fr;
  gap:32px
}

.challenge-section h2 {
  font-size:21px;
  margin:9px 0 16px
}

.challenge-section p {
  font-size:12px;
  line-height:1.85;
  color:#5e7694;
  margin:10px 0
}

.challenge-section p[lang] {
  font-family:var(--serif);
  font-size:17px;
  color:var(--ink)
}

.challenge-words {
  display:flex;
  flex-wrap:wrap;
  gap:6px;
  margin:16px 0 20px
}

.challenge-words>span {
  font-size:10px;
  padding:3px 7px;
  background:white;
  color:#7790b0;
  border:1px solid #d7e3f5;
  border-radius:4px
}

.challenge-words>span.used {
  background:#dceee4;
  color:var(--teal);
  border-color:#b7d3c5
}

.challenge-section label {
  display:block;
  font-size:12px;
  margin-bottom:12px
}

.challenge-section textarea {
  width:100%;
  min-height:260px;
  border:1px solid #cfdbec;
  border-radius:6px;
  padding:17px;
  font:16px/1.8 var(--serif)
}

.challenge-section .editor-footer {
  font-size:9px;
  flex-wrap:wrap
}

.timer-output {
  font-size:12px;
  font-weight:600;
  color:var(--blue);
  display:inline-block;
  margin:12px
}

.speaking-method {
  display:flex;
  align-items:center;
  justify-content:space-between;
  gap:15px;
  padding:20px 25px;
  background:var(--blue-soft);
  border-radius:7px;
  margin-bottom:27px;
  font-size:11px;
  color:#6f85a3
}

.speaking-method b {
  display:block;
  font:17px var(--serif);
  color:var(--ink);
  margin-bottom:5px
}

.speaking-method>.icon {
  color:#96aed0;
  width:17px;
  height:17px
}

.speaking-list {
  display:flex;
  flex-direction:column;
  gap:18px
}

.speaking-card {
  background:white;
  border:1px solid var(--line);
  border-radius:8px;
  padding:25px 27px;
  display:grid;
  grid-template-columns:26px 1fr auto;
  gap:20px;
  align-items:start
}

.speaking-card h2 {
  font:21px/1.55 var(--serif);
  letter-spacing:0;
  max-width:610px
}

.speaking-card details {
  margin:15px 0
}

.speaking-card details p {
  font-size:12px;
  line-height:1.85;
  color:#6e829e;
  margin:12px 0
}

.speaking-card details strong {
  font-size:10px;
  color:var(--blue);
  font-weight:500
}

.speaking-card label {
  display:block;
  font-size:10px;
  color:var(--slate);
  margin-bottom:8px
}

.speaking-card textarea {
  width:100%;
  height:72px;
  border:1px solid #dce4ef;
  border-radius:5px;
  background:#fcfdff;
  font-size:12px;
  padding:11px
}

.speaking-timer {
  position:sticky;
  bottom:20px;
  background:white;
  box-shadow:0 4px 30px #203e6020;
  border:1px solid var(--line);
  border-radius:8px;
  padding:8px 18px;
  display:flex;
  justify-content:space-between;
  gap:15px;
  margin:26px auto 0;
  max-width:450px
}

.speaking-timer output {
  font-size:12px;
  color:var(--blue);
  padding:4px 0
}

.speaking-timer .text-button {
  font-size:10px
}

.review-summary {
  display:grid;
  grid-template-columns:repeat(4,1fr);
  gap:15px;
  padding:24px 0;
  border-bottom:1px solid var(--line);
  margin-bottom:35px
}

.review-summary>div {
  display:flex;
  flex-direction:column;
  border-right:1px solid var(--line);
  padding-left:20px
}

.review-summary>div:first-child {
  padding-left:0
}

.review-summary>div:last-child {
  border-right:0
}

.review-summary strong {
  font:29px var(--serif);
  color:var(--blue)
}

.review-summary small {
  font-size:16px;
  color:#9baec8
}

.review-summary span {
  font-size:10px;
  color:var(--slate);
  margin-top:9px
}

dialog {
  border:1px solid var(--line);
  border-radius:11px;
  padding:0;
  color:var(--ink);
  background:white;
  max-width:650px;
  width:calc(100% - 36px);
  max-height:86vh;
  box-shadow:0 20px 80px #152e4930;
  overflow:auto
}

dialog::backdrop {
  background:#172e4b80;
  backdrop-filter:blur(4px)
}

.dialog-top {
  display:flex;
  justify-content:space-between;
  align-items:center;
  padding:14px 20px;
  border-bottom:1px solid var(--line);
  position:sticky;
  top:0;
  background:white;
  z-index:2
}

.dialog-top>span {
  font-size:12px;
  color:var(--slate)
}

#dialog-content {
  padding:23px
}

.image-dialog {
  max-width:1250px
}

.image-dialog #dialog-content {
  padding:10px
}

.full-image {
  width:100%;
  height:auto
}

.source-dialog {
  max-width:850px
}

.source-intro {
  display:flex;
  justify-content:space-between;
  align-items:center;
  gap:20px;
  font-size:11px;
  color:var(--slate);
  margin-bottom:25px
}

.source-dialog .prose {
  font-size:13px
}

.flashcard {
  text-align:center;
  min-height:290px;
  padding:20px 15px
}

.flashcard h2 {
  font:38px var(--serif);
  margin:25px 0
}

.flashcard p {
  margin:13px 0;
  font-size:14px
}

.flashcard strong {
  font-size:15px;
  color:var(--blue)
}

.flashcard .eyebrow {
  font-size:10px
}

.flashcard-actions {
  margin-top:30px
}

.flashcard .word-gloss {
  font-size:16px
}

#toast {
  position:fixed;
  bottom:28px;
  left:calc(50% + 70px);
  transform:translate(-50%,15px);
  background:var(--ink);
  color:white;
  border-radius:7px;
  padding:12px 20px;
  font-size:12px;
  z-index:100;
  opacity:0;
  pointer-events:none;
  transition:opacity .2s,transform .2s;
  box-shadow:0 5px 20px #203e601a;
  max-width:calc(100vw - 28px)
}

#toast.visible {
  opacity:1;
  transform:translate(-50%,0)
}

@media(min-width:1550px) {
  #main {
    padding-top:56px
  }
  .hero h1 {
    font-size:62px
  }
  .hero-description {
    font-size:14px;
    max-width:420px
  }
  .hero-visual>img {
    height:415px
  }
  .hero-copy .eyebrow {
    font-size:10px
  }
  .hero-meta {
    font-size:10px
  }
  .news-strip {
    margin-top:44px
  }
  .story-item p {
    font-size:12px;
    max-width:265px
  }
  .story-link {
    font-size:10px
  }
  .hero-actions .text-button {
    font-size:12px
  }
}

@media(max-width:1190px) {
  :root {
    --sidebar:210px
  }
  .sidebar {
    padding-left:15px;
    padding-right:15px
  }
  .nav-link.active:before {
    left:-15px
  }
  .brand {
    padding:0 9px;
    font-size:28px
  }
  .nav-link {
    gap:10px;
    padding:10px 11px
  }
  .sidebar-foot {
    padding-left:8px;
    padding-right:8px
  }
  .topbar {
    padding:0 30px
  }
  #main {
    padding:35px 30px 40px
  }
  .hero {
    gap:26px;
    min-height:410px
  }
  .hero h1 {
    font-size:45px
  }
  .hero-visual>img {
    height:360px
  }
  .hero-copy .eyebrow {
    font-size:8px
  }
  .hero-meta {
    gap:8px;
    font-size:8px
  }
  .hero-actions {
    gap:14px
  }
  .hero-actions .button {
    padding:12px 16px;
    font-size:12px
  }
  .hero-subtitle {
    font-size:15px
  }
  .hero-visual>figcaption {
    left:13px;
    right:13px;
    padding:13px;
    font-size:11px
  }
  .caption-kicker {
    font-size:7px
  }
  .news-strip {
    padding:19px 9px;
    gap:13px
  }
  .news-strip>a {
    max-width:140px;
    font-size:9px
  }
  .news-intro strong {
    font-size:10px
  }
  .news-strip>div:not(.news-intro)>strong {
    font-size:21px
  }
  .story-grid {
    gap:23px
  }
  .story-link {
    font-size:8px
  }
  .reading-layout {
    grid-template-columns:minmax(0,1fr) 155px;
    gap:24px
  }
  .paragraph {
    padding:25px 23px
  }
  .paragraph-heading h2 {
    font-size:16px
  }
  .english-passage {
    font-size:18px
  }
  .reading-aside h3 {
    font-size:17px
  }
  .page-heading h1 {
    font-size:30px
  }
  .writing-layout {
    grid-template-columns:minmax(0,1fr) 180px;
    gap:23px
  }
  .speaking-card {
    grid-template-columns:23px 1fr;
    gap:16px
  }
  .speaking-card>.button {
    grid-column:2;
    justify-self:start
  }
  .speaking-card h2 {
    font-size:21px
  }
  .vocab-card {
    padding:21px
  }
  .vocab-card h2 {
    font-size:23px
  }
  .page-footer {
    padding:23px 30px
  }
  .slider-grid {
    gap:18px
  }
  .purchasing-result {
    flex-wrap:wrap
  }
  .purchasing-result>span:last-child {
    max-width:100%;
    flex-basis:100%
  }
}

@media(max-width:980px) {
  :root {
    --sidebar:190px
  }
  .sidebar {
    padding:27px 11px 20px
  }
  .brand {
    font-size:26px;
    gap:7px
  }
  .brand>.icon {
    width:27px
  }
  .brand small {
    font-size:8px
  }
  .lesson-label {
    margin-left:8px;
    margin-right:8px;
    gap:9px;
    font-size:11px
  }
  .nav-link {
    padding:10px;
    gap:10px
  }
  .nav-link>span {
    font-size:11px
  }
  .nav-link.active:before {
    left:-11px
  }
  .nav-link>.icon {
    width:17px
  }
  .nav-link small {
    font-size:8px
  }
  .hero {
    gap:23px;
    grid-template-columns:1.12fr 1fr
  }
  .hero h1 {
    font-size:39px
  }
  .hero-copy .eyebrow {
    font-size:7px;
    letter-spacing:.5px;
    margin-bottom:19px
  }
  .hero-subtitle {
    font-size:14px
  }
  .hero-visual>img {
    height:330px
  }
  .hero-actions {
    flex-wrap:wrap;
    gap:14px;
    margin-top:21px
  }
  .hero-meta {
    gap:11px;
    flex-wrap:wrap
  }
  .hero-visual>figcaption {
    flex-direction:column;
    align-items:flex-start;
    gap:3px
  }
  .news-strip {
    display:grid;
    grid-template-columns:1.5fr 1fr 1fr
  }
  .news-strip>a {
    grid-column:1/-1;
    max-width:100%;
    justify-content:flex-end
  }
  .story-grid {
    gap:17px
  }
  .story-art {
    width:28px;
    height:28px;
    right:0
  }
  .story-art>.icon {
    width:15px;
    height:15px
  }
  .story-label {
    font-size:9px
  }
  .story-item h3 {
    font-size:15px
  }
  .story-item p {
    font-size:10px
  }
  .story-link {
    font-size:8px;
    white-space:normal;
    gap:8px
  }
  .section-heading h2 {
    font-size:20px
  }
  .section-heading>.subtle {
    font-size:10px
  }
  .reading-layout {
    display:block
  }
  .reading-aside {
    display:none
  }
  .reading-toolbar>.subtle {
    display:none
  }
  .paragraph-heading h2 {
    font-size:18px
  }
  .vocab-card h2 {
    font-size:22px
  }
  .vocab-toolbar {
    align-items:stretch;
    flex-direction:column;
    gap:12px
  }
  .search-box {
    max-width:100%
  }
  .filter-buttons {
    align-self:flex-start
  }
  .writing-layout {
    grid-template-columns:1fr
  }
  .writing-guide {
    padding:15px 20px;
    background:#edf3fb;
    border-radius:7px
  }
  .writing-guide ol {
    display:grid;
    grid-template-columns:1fr 1fr;
    gap:15px 25px;
    margin-bottom:0
  }
  .guide-language {
    display:none
  }
  .challenge-section {
    grid-template-columns:1fr
  }
  .challenge-section textarea {
    min-height:200px
  }
  .page-heading {
    align-items:flex-start;
    flex-wrap:wrap;
    gap:17px
  }
  .page-heading h1 {
    font-size:28px
  }
  .page-heading>button {
    margin-top:-2px
  }
  .topbar-tools {
    gap:14px
  }
  .hero-description {
    font-size:11px
  }
  .grammar-origin {
    display:none
  }
  .sentence-chunks {
    gap:8px
  }
  .chunk {
    font-size:18px
  }
  .review-summary {
    gap:10px
  }
  .review-summary>div {
    padding-left:10px
  }
  .review-summary span {
    font-size:9px
  }
}

@media(max-width:760px) {
  :root {
    --sidebar:232px
  }
  .sidebar {
    transform:translateX(-100%);
    transition:transform .25s;
    padding:28px 20px 24px
  }
  .sidebar nav {
    gap:4px
  }
  .brand {
    font-size:29px;
    gap:10px;
    padding-left:13px
  }
  .brand small {
    font-size:9px
  }
  .nav-link {
    padding:9px 13px;
    gap:13px;
    min-height:50px
  }
  .nav-link>span {
    font-size:12px
  }
  .nav-link small {
    font-size:9px
  }
  .nav-link>.icon {
    width:19px
  }
  .nav-link.active:before {
    left:-20px
  }
  .lesson-label {
    margin-top:27px;
    margin-bottom:21px;
    padding:17px 0;
    font-size:12px
  }
  .workspace {
    margin-left:0
  }
  .topbar {
    height:61px;
    padding:0 23px;
    justify-content:flex-start;
    gap:12px
  }
  .menu-button {
    display:inline-flex;
    width:28px;
    height:28px
  }
  .menu-button>.icon {
    width:20px;
    height:20px
  }
  .topbar-tools {
    margin-left:auto;
    gap:12px
  }
  .topbar-tools .text-button {
    font-size:10px
  }
  .level-tag {
    font-size:8px
  }
  .breadcrumb {
    gap:7px;
    font-size:10px
  }
  .breadcrumb strong {
    font-size:10px
  }
  .breadcrumb>.icon {
    width:10px
  }
  .mobile-close {
    display:inline-flex;
    position:absolute;
    top:25px;
    right:10px;
    width:25px;
    height:25px
  }
  .mobile-close .icon {
    width:17px;
    height:17px
  }
  .mobile-backdrop {
    position:fixed;
    inset:0;
    z-index:35;
    background:#192d4b73
  }
  .nav-open .sidebar {
    transform:translateX(0)
  }
  .nav-open .mobile-backdrop {
    display:block
  }
  .nav-open {
    overflow:hidden
  }
  #main {
    padding:31px 25px 40px;
    max-width:700px
  }
  .hero {
    gap:30px;
    grid-template-columns:1fr 1fr;
    min-height:370px
  }
  .hero h1 {
    font-size:39px
  }
  .hero-visual>img {
    height:315px
  }
  .hero-copy .eyebrow {
    font-size:7px
  }
  .hero-meta {
    font-size:8px;
    gap:10px
  }
  .hero-meta span:last-child {
    flex-basis:100%
  }
  .hero-description {
    font-size:11px
  }
  .hero-subtitle {
    font-size:13px;
    margin-top:17px
  }
  .hero-actions .button {
    min-height:40px;
    font-size:12px;
    padding:10px 14px
  }
  .hero-visual>figcaption {
    left:12px;
    right:12px;
    padding:12px
  }
  .hero-visual>figcaption>span:last-child {
    font-size:11px
  }
  .news-strip {
    margin-top:28px
  }
  .story-section {
    padding-top:30px
  }
  .story-section .section-heading>.subtle {
    display:none
  }
  .learning-section {
    padding-top:24px
  }
  .hero-copy .eyebrow .small-line {
    width:10px
  }
  .study-note {
    padding:16px;
    font-size:10px
  }
  .page-heading h1 {
    font-size:29px
  }
  .page-heading p:not(.eyebrow) {
    font-size:11px
  }
  .paragraph {
    padding:24px
  }
  .english-passage {
    font-size:19px
  }
  .page-footer {
    padding:20px 25px;
    font-size:9px
  }
  .page-footer>span:last-child {
    display:none
  }
  .vocab-grid {
    gap:15px
  }
  .vocab-card {
    padding:21px
  }
  .speaking-method {
    padding:18px 20px
  }
  .speaking-card {
    padding:23px
  }
  .review-summary strong {
    font-size:26px
  }
  #toast {
    left:50%
  }
  .grammar-card {
    padding:24px
  }
  .speaking-card h2 {
    font-size:20px
  }
  .challenge-section {
    gap:24px
  }
  .source-intro {
    flex-wrap:wrap
  }
}

@media(max-width:520px) {
  html {
    scroll-padding-top:80px
  }
  .topbar {
    padding:0 16px;
    gap:8px
  }
  .topbar-tools .level-tag {
    display:none
  }
  .topbar-tools .text-button .icon {
    display:none
  }
  .breadcrumb {
    gap:6px
  }
  .topbar-tools {
    gap:7px
  }
  #main {
    padding:26px 21px 32px
  }
  .hero {
    grid-template-columns:1fr;
    gap:25px;
    min-height:0
  }
  .hero-copy .eyebrow {
    font-size:8px;
    letter-spacing:1px;
    margin-bottom:20px
  }
  .hero h1 {
    font-size:49px;
    letter-spacing:-1.6px;
    line-height:1.08
  }
  .hero-subtitle {
    font-size:16px;
    margin-top:18px
  }
  .hero-description {
    font-size:12px;
    line-height:1.95;
    max-width:100%;
    margin-top:9px
  }
  .hero-actions {
    flex-wrap:nowrap;
    gap:19px;
    margin-top:21px
  }
  .hero-actions .button {
    font-size:13px;
    min-height:45px;
    padding:11px 18px
  }
  .hero-actions .text-button {
    font-size:10px
  }
  .hero-meta {
    gap:13px;
    font-size:8px;
    flex-wrap:nowrap;
    margin-top:18px
  }
  .hero-meta span:last-child {
    flex-basis:auto
  }
  .hero-visual {
    margin:0;
    padding-bottom:22px
  }
  .hero-visual>img {
    height:265px;
    border-radius:90px 90px 6px 6px;
    object-position:center
  }
  .hero-visual>figcaption {
    flex-direction:row;
    align-items:center;
    gap:10px;
    left:17px;
    right:17px;
    padding:13px 15px
  }
  .hero-visual .caption-kicker {
    font-size:7px;
    letter-spacing:.7px
  }
  .image-credit {
    bottom:57px;
    font-size:7px
  }
  .news-strip {
    padding:17px 3px;
    grid-template-columns:1fr 1fr;
    row-gap:17px;
    margin-top:30px
  }
  .news-intro {
    grid-column:1/-1;
    gap:10px
  }
  .news-intro strong {
    font-size:11px
  }
  .news-strip>div:not(.news-intro) {
    padding-left:3px
  }
  .news-strip>div:not(.news-intro)>strong {
    font-size:27px
  }
  .news-strip span {
    font-size:9px
  }
  .news-strip>a {
    font-size:10px;
    justify-content:flex-start;
    border-top:1px solid var(--line);
    padding-top:12px
  }
  .story-section {
    padding-top:29px
  }
  .section-heading {
    margin-bottom:20px;
    gap:12px
  }
  .section-heading h2 {
    font-size:19px;
    letter-spacing:0
  }
  .section-heading .eyebrow {
    font-size:8px
  }
  .story-grid {
    grid-template-columns:1fr;
    gap:0
  }
  .story-item {
    padding:20px 0 19px;
    border-top:1px solid var(--line)
  }
  .story-item:first-child {
    border-top:2px solid var(--line)
  }
  .story-label {
    font-size:10px
  }
  .story-art {
    top:25px;
    width:36px;
    height:36px
  }
  .story-art>.icon {
    width:19px;
    height:19px
  }
  .story-item h3 {
    font-size:18px;
    margin:10px 0 7px
  }
  .story-item p {
    font-size:11px;
    max-width:calc(100% - 45px)
  }
  .story-link {
    font-size:9px;
    margin-top:12px;
    white-space:nowrap
  }
  .learning-section {
    padding-top:20px
  }
  .learning-path button {
    padding:15px 13px;
    gap:11px;
    flex-wrap:wrap
  }
  .learning-path button strong {
    min-width:75px;
    font-size:11px
  }
  .learning-path button span {
    font-size:9px;
    max-width:calc(100% - 124px)
  }
  .learning-path button>.icon:last-child {
    width:12px;
    height:12px
  }
  .learning-path button>.icon:first-child {
    width:16px;
    height:16px
  }
  .study-note {
    margin-top:21px
  }
  .page-heading {
    margin-bottom:25px;
    gap:16px
  }
  .page-heading .eyebrow {
    font-size:9px
  }
  .page-heading h1 {
    font-size:27px;
    letter-spacing:-.4px
  }
  .page-heading p:not(.eyebrow) {
    line-height:1.9;
    margin-top:11px
  }
  .page-heading .button {
    font-size:10px;
    min-height:34px;
    padding:7px 11px
  }
  .reading-toolbar {
    padding:10px 8px;
    margin-bottom:23px
  }
  .paragraph-jumps {
    justify-content:space-between;
    width:100%;
    gap:2px
  }
  .paragraph-jumps a {
    width:26px;
    height:27px;
    font-size:13px
  }
  .paragraph {
    padding:22px 18px;
    border-radius:6px;
    margin-bottom:19px
  }
  .paragraph-heading {
    gap:10px;
    align-items:flex-start;
    margin-bottom:20px;
    flex-wrap:wrap;
    position:relative;
    padding-bottom:21px
  }
  .paragraph-letter {
    width:32px;
    height:38px;
    font-size:21px
  }
  .paragraph-tag {
    font-size:8px;
    line-height:1.5;
    display:block;
    margin-top:1px
  }
  .paragraph-heading h2 {
    font-size:16px;
    line-height:1.6;
    max-width:235px;
    margin-top:1px
  }
  .read-button {
    position:absolute;
    right:0;
    bottom:-3px;
    padding:0;
    font-size:9px
  }
  .read-button>.icon {
    width:13px;
    height:13px
  }
  .english-passage {
    font-size:18px;
    line-height:1.95
  }
  .takeaway {
    font-size:10px;
    gap:7px;
    padding:12px 0;
    margin-top:13px
  }
  .takeaway>.icon {
    width:14px;
    height:14px
  }
  .explanation summary {
    font-size:10px
  }
  .explanation-content {
    font-size:11px;
    line-height:2.1
  }
  .retrieval {
    padding:13px
  }
  .retrieval>strong {
    font-size:10px
  }
  .retrieval p {
    font-size:10px
  }
  .lesson-figure figcaption {
    font-size:8px;
    flex-wrap:wrap;
    gap:3px
  }
  .lesson-figure img {
    aspect-ratio:auto
  }
  .explainer {
    padding:14px 12px
  }
  .explainer-title {
    gap:8px;
    flex-wrap:wrap;
    font-size:10px
  }
  .explainer-title>.subtle {
    font-size:8px
  }
  .revision-table>div {
    font-size:10px;
    gap:8px
  }
  .revision-table strong {
    font-size:11px;
    min-width:32px
  }
  .revision-table span {
    gap:5px
  }
  .revision-table .icon {
    width:12px;
    height:12px
  }
  .revision-table em {
    font-size:10px
  }
  .sector-row {
    grid-template-columns:74px 1fr 60px;
    gap:6px;
    font-size:9px
  }
  .people-options {
    gap:6px
  }
  .people-options button {
    padding:9px 7px;
    font-size:9px;
    gap:6px
  }
  .people-options button>.icon {
    width:12px;
    height:12px
  }
  .policy-flow {
    flex-wrap:wrap;
    gap:6px
  }
  .policy-flow>span {
    flex:1 1 42%;
    font-size:9px
  }
  .policy-flow>.icon:nth-of-type(2) {
    display:none
  }
  .policy-outcomes {
    gap:7px;
    justify-content:space-between
  }
  .policy-outcomes>span {
    font-size:8px;
    padding:6px 8px
  }
  .slider-grid label {
    font-size:10px
  }
  .purchasing-result>span {
    font-size:9px
  }
  .next-section {
    flex-direction:column;
    align-items:flex-start;
    gap:18px;
    margin-top:25px;
    padding-top:23px
  }
  .next-section h3 {
    font-size:16px
  }
  .next-section .button {
    font-size:12px;
    min-height:42px
  }
  .vocab-grid {
    grid-template-columns:1fr;
    gap:16px
  }
  .vocab-card {
    padding:22px
  }
  .vocab-card h2 {
    font-size:27px
  }
  .vocab-card .ipa {
    font-size:10px
  }
  .definition {
    min-height:0;
    font-size:12px
  }
  .vocab-card summary {
    font-size:10px
  }
  .filter-buttons button {
    font-size:10px;
    padding:5px 11px
  }
  .vocab-toolbar {
    margin-bottom:15px
  }
  .grammar-card {
    padding:22px 18px
  }
  .grammar-title {
    gap:12px
  }
  .grammar-title .eyebrow {
    font-size:8px;
    letter-spacing:0
  }
  .grammar-title h2 {
    font-size:17px
  }
  .grammar-number {
    font-size:19px
  }
  .sentence-chunks {
    margin-top:22px;
    gap:8px
  }
  .chunk {
    font-size:18px;
    padding:10px 12px;
    width:100%
  }
  .chunk small {
    font-size:8px
  }
  .grammar-tip {
    font-size:11px;
    line-height:1.9
  }
  .grammar-card>details summary {
    font-size:10px
  }
  .prose {
    font-size:11px
  }
  .practice-switch {
    font-size:11px;
    gap:24px;
    margin-bottom:25px
  }
  .practice-switch span {
    font-size:9px
  }
  .question-group>span {
    font-size:15px
  }
  .question-group p {
    font-size:10px
  }
  .question {
    padding:15px 0 21px
  }
  .question legend {
    font-size:16px;
    gap:9px;
    line-height:1.8
  }
  .question-number {
    width:23px;
    min-width:23px;
    height:23px;
    font-size:10px
  }
  .answer-options {
    padding-left:0
  }
  .answer-options label {
    font-size:11px;
    padding:11px 12px;
    gap:8px
  }
  .tf-options {
    gap:5px;
    flex-wrap:nowrap
  }
  .tf-options label {
    font-size:9px;
    min-width:0;
    flex:1;
    justify-content:center;
    gap:6px;
    padding:9px 5px;
    white-space:nowrap
  }
  .tf-options input {
    width:11px;
    height:11px
  }
  .question>.answer-input {
    margin-left:0;
    width:100%;
    max-width:100%;
    font-size:11px
  }
  .feedback {
    margin-left:0;
    padding:13px;
    font-size:11px
  }
  .answer-result {
    flex-wrap:wrap;
    font-size:10px;
    gap:6px
  }
  .answer-result a {
    font-size:9px
  }
  .submit-row {
    gap:10px
  }
  .submit-row .button {
    font-size:11px;
    padding:11px 13px;
    gap:9px;
    min-height:42px
  }
  .submit-row .button>.icon {
    width:14px;
    height:14px
  }
  .submit-row>span {
    margin:4px 0 0;
    flex-basis:100%;
    font-size:11px
  }
  .vocab-practice-section {
    margin-top:38px
  }
  .vocab-practice-section .section-heading>.subtle {
    display:none
  }
  .section-description {
    font-size:11px
  }
  .practice-group>summary {
    padding:17px;
    font-size:12px;
    gap:12px
  }
  .practice-group-letter {
    font-size:19px
  }
  .practice-group small {
    font-size:9px
  }
  .practice-group-content {
    padding:0 17px 14px
  }
  .vocab-question>label {
    font-size:14px
  }
  .vocab-question>.answer-input {
    font-size:11px
  }
  .practice-answer {
    font-size:11px;
    padding:12px
  }
  .writing-prompt {
    padding:23px 20px
  }
  .writing-prompt>p {
    font-size:18px;
    line-height:1.75
  }
  .writing-prompt>p>strong {
    font-size:16px
  }
  .prompt-meta {
    font-size:10px;
    gap:17px
  }
  .prompt-meta .icon {
    width:13px;
    height:13px
  }
  .editor-heading h2 {
    font-size:17px
  }
  .save-status {
    font-size:9px
  }
  .writing-editor {
    padding:18px 20px;
    font-size:17px;
    min-height:400px
  }
  .writing-guide {
    padding:21px
  }
  .writing-guide ol {
    grid-template-columns:1fr;
    gap:0
  }
  .writing-guide li {
    margin-bottom:15px
  }
  .writing-guide h3 {
    font-size:17px
  }
  .writing-guide strong {
    font-size:11px
  }
  .writing-guide p {
    font-size:10px
  }
  .challenge-section {
    padding:22px 19px;
    margin-top:29px;
    gap:20px
  }
  .challenge-section h2 {
    font-size:19px
  }
  .challenge-section p {
    font-size:11px
  }
  .challenge-section p[lang] {
    font-size:17px
  }
  .challenge-words>span {
    font-size:9px
  }
  .challenge-section .compact {
    font-size:10px
  }
  .challenge-section textarea {
    font-size:16px
  }
  .speaking-method {
    padding:17px 14px;
    font-size:9px;
    gap:8px;
    align-items:flex-start
  }
  .speaking-method b {
    font-size:14px;
    line-height:1.4
  }
  .speaking-method>span {
    flex:1
  }
  .speaking-method>.icon {
    width:12px;
    height:12px;
    margin-top:9px
  }
  .speaking-card {
    padding:22px 18px;
    gap:13px;
    grid-template-columns:21px minmax(0,1fr)
  }
  .speaking-card h2 {
    font-size:19px
  }
  .speaking-card summary {
    font-size:10px;
    line-height:1.8
  }
  .speaking-card details p {
    font-size:11px
  }
  .speaking-card .button {
    font-size:10px;
    padding:9px 11px;
    min-height:35px
  }
  .speaking-timer {
    padding:10px 14px;
    bottom:12px
  }
  .speaking-timer output {
    font-size:11px
  }
  .review-summary {
    grid-template-columns:1fr 1fr;
    gap:23px;
    padding:10px 0 26px;
    margin-bottom:28px
  }
  .review-summary>div:nth-child(2) {
    border:0
  }
  .review-summary>div:nth-child(3) {
    padding-left:0
  }
  .review-summary span {
    font-size:10px
  }
  .review-summary strong {
    font-size:28px
  }
  .review .text-button {
    font-size:10px
  }
  .source-fold summary {
    font-size:11px
  }
  .page-footer {
    padding:19px 21px;
    font-size:9px
  }
  dialog {
    width:calc(100% - 22px);
    max-height:90vh;
    border-radius:8px
  }
  #dialog-content {
    padding:17px
  }
  .dialog-top {
    padding:11px 16px
  }
  .dialog-top>span {
    font-size:11px
  }
  #dialog-content .vocab-card {
    border:0;
    padding:4px
  }
  .source-dialog .prose {
    font-size:12px
  }
  .flashcard {
    padding:15px 4px
  }
  .flashcard h2 {
    font-size:31px
  }
  .flashcard p {
    font-size:13px
  }
  .flashcard .eyebrow {
    font-size:9px
  }
  .flashcard .button {
    font-size:12px
  }
  .flashcard-actions {
    margin-top:27px
  }
  #toast {
    font-size:11px;
    padding:11px 15px;
    width:max-content;
    bottom:19px
  }
  .empty-state {
    padding:35px 20px
  }
  .empty-state h3 {
    font-size:16px
  }
  .empty-state p {
    font-size:11px
  }
}

@media(prefers-reduced-motion:reduce) {
  html {
    scroll-behavior:auto
  }
  *,*:before,*:after {
    animation:none!important;
    transition:none!important
  }
  .button:hover {
    transform:none
  }
}

@media print {
  .sidebar,.topbar,.page-footer,.reading-aside,.read-button,.hero-actions,.mobile-backdrop,#toast,dialog {
    display:none!important
  }
  .workspace {
    margin:0
  }
  #main {
    padding:0;
    max-width:none
  }
  .reading-layout {
    display:block
  }
  .paragraph {
    break-inside:avoid;
    border:0;
    padding:20px 0;
    box-shadow:none
  }
  .explanation {
    display:block
  }
  .lesson-figure {
    max-width:550px
  }
  .next-section {
    display:none
  }
  .hero {
    grid-template-columns:1fr 1fr
  }
  .hero h1 {
    font-size:40px
  }
}


/* Reusable lesson choices and concept activities. */
.lesson-switcher {display:flex;flex-direction:column;gap:4px;margin:-12px 10px 19px;font-size:10px;color:var(--slate);}
.lesson-switcher a {padding:3px 0;}
.lesson-switcher a[aria-current] {color:var(--blue);font-weight:600;}
.hero-visual.wide>img {height:auto;aspect-ratio:1672/941;border-radius:9px;object-fit:contain;}
.hero-visual.wide {padding-bottom:44px;}
.hero-visual.wide>figcaption {left:12px;right:12px;flex-direction:column;align-items:flex-start;gap:4px;}
.source-link {color:var(--blue);text-decoration:underline;text-underline-offset:3px;font-family:var(--sans);font-size:.78em;}
.concept-comparison {display:grid;grid-template-columns:repeat(2,minmax(0,1fr));gap:20px;margin-top:17px;}
.concept-comparison>div {border-left:3px solid var(--blue);padding-left:13px;}
.concept-comparison>div:last-child {border-color:var(--teal);}
.concept-comparison strong {font-size:14px;}
.concept-comparison p {margin-top:6px;}
.concept-options {display:flex;flex-wrap:wrap;gap:8px;margin:17px 0 12px;}
.concept-options button {display:flex;align-items:center;gap:8px;padding:9px 12px;border:1px solid var(--line);border-radius:5px;background:var(--paper);font-size:12px;}
.concept-options button.selected {color:var(--blue);border-color:var(--blue);background:var(--blue-soft);}
.concept-options .icon {width:14px;height:14px;}
.concept-result {min-height:60px;line-height:1.8;}
.coverage-lab {display:grid;grid-template-columns:repeat(3,minmax(0,1fr));gap:20px;margin-top:19px;}
.coverage-lab label>span:first-child {display:flex;justify-content:space-between;font-size:12px;font-weight:600;}
.coverage-lab input {width:100%;margin:15px 0;accent-color:var(--blue);}
.coverage-track {display:block;height:10px;background:var(--line);position:relative;border-radius:2px;}
.coverage-track>span {display:block;height:100%;background:var(--teal);border-radius:2px;transition:width .15s;}
.coverage-track i {position:absolute;left:70%;top:-4px;height:18px;border-left:2px dashed var(--ink);}
.coverage-summary {display:flex;justify-content:space-between;gap:20px;align-items:center;margin:24px 0 15px;padding-top:15px;border-top:1px solid var(--line);font-size:12px;}
.coverage-summary strong {font-size:24px;color:var(--blue);margin-left:10px;}
.coverage-summary>span:last-child {color:var(--slate);max-width:55%;}
.recall-list {display:grid;grid-template-columns:repeat(2,minmax(0,1fr));gap:22px;}
.recall-card {padding:24px;background:var(--paper);border:1px solid var(--line);border-radius:7px;}
.recall-card>label {display:flex;gap:12px;font-size:14px;align-items:flex-start;min-height:90px;}
.recall-card .question-number {flex-shrink:0;min-width:32px;font-size:12px;}
.recall-card textarea {width:100%;background:var(--cloud);border:1px solid var(--line);border-radius:5px;padding:12px;min-height:86px;margin:17px 0;}
.recall-card summary {font-size:12px;color:var(--blue);cursor:pointer;}
.recall-card details p {margin:14px 0;font-size:13px;}
.recall-card button[aria-pressed=true] {background:var(--blue-soft);color:var(--blue);}
.summary-context {padding:18px 22px;background:var(--blue-soft);font-family:var(--serif);font-size:16px;margin-bottom:20px;line-height:1.9;}
@media(min-width:1100px) and (max-height:950px) {
  .sidebar {padding-top:24px;}
  .lesson-label {margin-top:20px;margin-bottom:21px;padding:14px 0;}
  .sidebar nav {gap:3px;}
  .nav-link {min-height:47px;padding-top:7px;padding-bottom:7px;}
  .sidebar-foot {padding-top:18px;}
}
@media(max-width:760px) {.recall-list,.coverage-lab,.concept-comparison {grid-template-columns:1fr;}}

@media(max-width:760px) {
  .hero-description,
  .page-heading>div>p:not(.eyebrow),
  .question-group>p,
  .feedback>p,
  .practice-answer,
  .explanation-content>p,
  .retrieval p {
    font-size:16px;
    line-height:1.75;
  }
  .answer-options>label,
  .read-button,
  .concept-options button {
    min-height:44px;
  }
  .tf-options>label {
    font-size:12px;
  }
}

.lesson-switcher {max-height:145px;overflow-y:auto;flex-shrink:0;}
.lesson-switcher .library-link {display:flex;align-items:center;justify-content:space-between;color:var(--ink);padding-bottom:5px;}
.lesson-switcher .library-link .icon {width:12px;height:12px;}