@import url("https://fonts.googleapis.com/css2?family=Noto+Sans:wght@400..700&family=Noto+Serif:ital,wght@0,400..600;1,400..600&display=swap");

:root {
  color-scheme: dark;
  --paper: #171717;
  --surface: #1f1f1f;
  --ink: #f2f2f2;
  --muted: #b3b3b3;
  --line: #3c3c3c;
  --soft: #2c2c2c;
  --hover: #383838;
  --accent: #c7f36b;
  --accent-foreground: #171717;
  --accent-hover: #d5f793;
  --accent-soft: #2b3520;
  --danger: #f2a6a0;
  --serif: "Noto Serif", Georgia, serif;
  --sans: "Noto Sans", Arial, sans-serif;
  --shadow-card:
    0 0 0 1px rgb(0 0 0 / 5%), 0 4px 8px -4px rgb(0 0 0 / 9%), 0 20px 40px -18px rgb(0 0 0 / 15%);
  --ease-out: cubic-bezier(0.2, 0, 0, 1);
}
* {
  box-sizing: border-box;
}
html {
  scroll-behavior: smooth;
  scroll-padding-top: 32px;
  -webkit-font-smoothing: antialiased;
  -moz-osx-font-smoothing: grayscale;
}
body {
  margin: 0;
  background: var(--paper);
  color: var(--ink);
  font: 16px/1.5 var(--sans);
}
.site-shell {
  display: contents;
}
button,
a {
  -webkit-tap-highlight-color: transparent;
}
button,
input,
textarea {
  font: inherit;
}
button {
  cursor: pointer;
  color: inherit;
  border: 0;
}
a {
  color: inherit;
  text-decoration: none;
}
button:focus-visible,
a:focus-visible,
summary:focus-visible,
textarea:focus-visible,
[tabindex="0"]:focus-visible {
  outline: 3px solid var(--accent);
  outline-offset: 4px;
}
h1,
h2,
h3,
p {
  margin: 0;
}
h1,
h2,
h3 {
  font-family: var(--serif);
  text-wrap: balance;
}
p,
li,
blockquote {
  text-wrap: pretty;
}
h1,
h2 {
  font: 400 54px/1.15 var(--serif);
  letter-spacing: -0.035em;
}
h1 em,
h2 em {
  font-weight: 400;
  color: var(--ink);
}
svg {
  width: 21px;
  height: 21px;
  fill: none;
  stroke: currentColor;
  stroke-width: 1.6;
}
.button {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 17px;
  background: var(--accent);
  color: var(--accent-foreground);
  min-height: 52px;
  padding: 14px 21px 14px 23px;
  border-radius: 8px;
  font-size: 14px;
  font-weight: 550;
  box-shadow:
    0 1px 2px rgb(0 0 0 / 7%),
    0 3px 6px -3px rgb(0 0 0 / 14%);
  transition:
    background-color 180ms var(--ease-out),
    scale 150ms var(--ease-out),
    box-shadow 180ms var(--ease-out);
}
.button:hover:not(:disabled) {
  background: var(--accent-hover);
}
.button:active,
.demo-tabs button:active,
.billing-switch button:active,
.dialog-close:active {
  scale: 0.96;
}
.button-small {
  min-height: 44px;
  padding: 11px 14px 11px 16px;
  font-size: 13px;
}
.button-outline {
  background: var(--surface);
  color: var(--ink);
  box-shadow:
    0 0 0 1px rgb(0 0 0 / 12%),
    0 2px 3px rgb(0 0 0 / 3%);
}
.button-outline:hover:not(:disabled) {
  background: var(--hover);
}
.header {
  max-width: 1320px;
  padding: 27px 38px;
  margin: auto;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 20px;
}
.brand {
  display: inline-flex;
  align-items: center;
  gap: 10px;
  font-size: 14px;
  line-height: 1.2;
  letter-spacing: -0.3px;
  min-height: 44px;
}
.brand strong {
  font-weight: 650;
}
.header nav {
  display: flex;
  gap: 30px;
  color: var(--muted);
  font-size: 14px;
}
.header nav a,
.footer > a:last-child {
  display: inline-flex;
  align-items: center;
  min-height: 44px;
}
.header nav a:hover,
.footer a:hover,
.secondary-link:hover {
  color: var(--accent);
}
.eyebrow {
  font-size: 11px;
  font-weight: 550;
  letter-spacing: 1.5px;
  line-height: 1.7;
}
.blue-dot {
  display: inline-block;
  width: 6px;
  height: 6px;
  border-radius: 50%;
  background: var(--ink);
  vertical-align: middle;
  margin-right: 7px;
}
.hero {
  max-width: 1440px;
  margin: auto;
  padding: 77px 32px 35px;
}
.hero-copy {
  text-align: center;
  max-width: 1030px;
  margin: auto;
}
.hero h1 {
  font-size: 88px;
  line-height: 1;
  margin: 25px auto;
  letter-spacing: -0.038em;
}
.hero-description {
  color: var(--muted);
  font-size: 16px;
  line-height: 1.75;
}
.hero-actions {
  display: flex;
  justify-content: center;
  align-items: center;
  gap: 27px;
  margin-top: 29px;
}
.secondary-link {
  display: inline-flex;
  min-height: 44px;
  align-items: center;
  gap: 10px;
  font-size: 14px;
  transition: color 150ms;
}
.play-outline {
  display: grid;
  place-items: center;
  width: 24px;
  height: 24px;
  border-radius: 50%;
  box-shadow: 0 0 0 1px rgb(0 0 0 / 18%);
  font-size: 8px;
  padding-left: 2px;
}
.cta-note {
  font-size: 12px;
  color: var(--muted);
  margin-top: 13px;
}
.learning-sequence {
  position: relative;
  display: flex;
  justify-content: center;
  align-items: center;
  gap: 33px;
  max-width: 990px;
  margin: 64px auto 28px;
  padding: 0 20px;
}
.learning-card {
  flex: 1;
  min-width: 0;
  max-width: 286px;
  background: var(--surface);
  border-radius: 11px;
  box-shadow: var(--shadow-card);
  padding: 19px;
}
.sequence-label {
  display: flex;
  justify-content: space-between;
  align-items: center;
  color: var(--muted);
  font-size: 9px;
  letter-spacing: 1px;
  margin-bottom: 18px;
}
.sequence-label > span:last-child {
  font-size: 16px;
}
.watch-card {
  transform: rotate(-5deg);
}
.lesson-mini {
  position: relative;
  background: #30302e;
  color: #f5f1e8;
  padding: 20px 19px 30px;
  border-radius: 5px;
  outline: 1px solid rgb(0 0 0 / 10%);
  outline-offset: -1px;
}
.lesson-mini > span {
  font-size: 7px;
  letter-spacing: 1.7px;
  color: #d9d3c8;
}
.lesson-mini > p {
  font: 400 33px/1.04 var(--serif);
  margin: 15px 0 14px;
  letter-spacing: -0.5px;
}
.lesson-mini em {
  color: #d9d3c8;
}
.mini-video-controls {
  position: absolute;
  bottom: 13px;
  left: 18px;
  right: 18px;
  display: flex;
  align-items: center;
  gap: 9px;
  font-size: 8px;
  color: #eae5db;
}
.mini-video-controls > span:first-child {
  font-size: 7px;
}
.mini-video-progress {
  flex: 1;
  height: 2px;
  background: #79746c;
}
.watch-card h3 {
  font-size: 13px;
  font-weight: 550;
  line-height: 1.5;
  margin: 15px 0 4px;
}
.card-caption {
  color: var(--muted);
  font-size: 11px;
}
.words-card {
  z-index: 1;
  transform: rotate(2deg) translateY(8px);
  padding: 22px;
  background: var(--soft);
}
.words-card .sequence-label {
  margin-bottom: 23px;
}
.excerpt-heading {
  display: flex;
  align-items: center;
  gap: 10px;
  font-size: 8px;
  letter-spacing: 0.6px;
  color: var(--muted);
}
.timestamp-pill {
  font-variant-numeric: tabular-nums;
  font-family: var(--sans);
  padding: 4px 8px;
  font-size: 12px;
  color: var(--ink);
  background: var(--soft);
  border-radius: 4px;
  letter-spacing: 0;
}
.words-card blockquote {
  font: 400 32px/1.2 var(--serif);
  margin: 21px 0 14px;
  letter-spacing: -0.5px;
}
.words-card mark {
  color: var(--muted);
  background: var(--soft);
  box-decoration-break: clone;
  -webkit-box-decoration-break: clone;
}
.excerpt-link {
  display: flex;
  align-items: center;
  justify-content: space-between;
  min-height: 44px;
  color: var(--muted);
  font-size: 10px;
}
.excerpt-link:hover {
  color: var(--ink);
}
.excerpt-link > span {
  font-size: 18px;
}
.question-card {
  transform: rotate(5deg);
  margin-top: 20px;
}
.conversation-source {
  display: flex;
  gap: 10px;
  align-items: center;
  padding: 13px;
  background: var(--soft);
  border-radius: 6px;
  font-size: 10px;
}
.source-lines {
  font-size: 19px;
  color: var(--muted);
}
.conversation-source > div > span {
  display: block;
  color: var(--muted);
  font-size: 9px;
  margin-top: 3px;
}
.conversation-source > span:last-child {
  color: var(--muted);
  margin-left: auto;
}
.question-card > p {
  font: 400 29px/1.17 var(--serif);
  letter-spacing: -0.5px;
  margin: 27px 0 26px;
}
.conversation-bottom {
  display: flex;
  align-items: center;
  justify-content: space-between;
  font-size: 9px;
  color: var(--muted);
  gap: 10px;
}
.send-arrow {
  display: grid;
  place-items: center;
  background: var(--ink);
  color: var(--paper);
  font-size: 18px;
  width: 27px;
  height: 27px;
  border-radius: 50%;
  flex-shrink: 0;
}
.sequence-arrow {
  position: absolute;
  top: 44%;
  font: 36px var(--serif);
  color: var(--muted);
  z-index: 2;
  rotate: 40deg;
}
.arrow-one {
  left: 32.5%;
}
.arrow-two {
  right: 32.5%;
}
.hero-footnote {
  text-align: center;
  font-size: 12px;
  color: var(--muted);
  margin-top: 43px;
}
.hero-footnote span {
  display: block;
  font-size: 20px;
  margin-top: 13px;
}
.demo-section {
  padding: 80px 32px 65px;
  background: var(--soft);
  box-shadow:
    inset 0 1px rgb(0 0 0 / 3%),
    inset 0 -1px rgb(0 0 0 / 3%);
}
.section-heading {
  text-align: center;
}
.section-heading h2 {
  margin: 20px 0;
}
.section-heading > p:last-child {
  font-size: 16px;
  line-height: 1.7;
  color: var(--muted);
}
.demo-toolbar {
  display: flex;
  justify-content: space-between;
  align-items: center;
  max-width: 1160px;
  margin: 42px auto 17px;
}
.demo-live-label {
  font-size: 10px;
  letter-spacing: 1.3px;
  color: var(--muted);
}
.demo-tabs,
.billing-switch {
  display: inline-flex;
  padding: 4px;
  gap: 3px;
  background: var(--soft);
  border-radius: 12px;
}
.demo-tabs button,
.billing-switch button {
  min-height: 40px;
  font-size: 13px;
  padding: 8px 19px;
  background: transparent;
  border-radius: 8px;
  color: var(--muted);
  transition:
    background-color 180ms,
    box-shadow 180ms,
    scale 150ms var(--ease-out);
}
.demo-tabs button[aria-selected="true"],
.billing-switch button[aria-pressed="true"] {
  background: var(--accent-soft);
  color: var(--accent);
  box-shadow: 0 1px 3px rgb(0 0 0 / 8%);
}
.browser-demo {
  max-width: 1160px;
  margin: auto;
  border-radius: 13px;
  overflow: hidden;
  background: var(--surface);
  box-shadow:
    0 0 0 1px rgb(0 0 0 / 8%),
    0 8px 12px -8px rgb(0 0 0 / 9%),
    0 30px 65px -24px rgb(0 0 0 / 18%);
}
.browser-bar {
  display: flex;
  align-items: center;
  padding: 10px 18px;
  gap: 22px;
  font-size: 11px;
  color: var(--muted);
  background: var(--soft);
  box-shadow: inset 0 -1px rgb(0 0 0 / 6%);
}
.window-dots {
  display: flex;
  gap: 5px;
}
.window-dots i {
  width: 8px;
  height: 8px;
  border-radius: 50%;
  background: var(--soft);
}
.browser-address {
  padding: 5px 15px;
  width: min(430px, 50%);
  background: var(--surface);
  border-radius: 5px;
  font-size: 10px;
}
.preview-label {
  margin-left: auto;
  font-size: 8px;
  letter-spacing: 1.1px;
}
.demo-body {
  position: relative;
  display: grid;
  grid-template-columns: minmax(0, 1fr) 380px;
}
.video-side {
  padding: 0 22px 24px;
  min-width: 0;
}
.youtube-topbar {
  display: flex;
  align-items: center;
  gap: 24px;
  height: 62px;
}
.youtube-wordmark {
  display: flex;
  align-items: center;
  gap: 4px;
  font-family: var(--sans);
  font-size: 20px;
  font-weight: 700;
  letter-spacing: -1.2px;
}
.youtube-play {
  display: grid;
  place-items: center;
  width: 27px;
  height: 19px;
  background: #f03;
  color: white;
  border-radius: 6px;
  font-size: 9px;
  padding-left: 1px;
}
.youtube-search {
  display: flex;
  justify-content: space-between;
  padding: 6px 12px;
  border: 1px solid var(--line);
  border-radius: 25px;
  color: var(--muted);
  font-size: 11px;
  flex: 1;
  max-width: 280px;
  margin-left: auto;
}
.youtube-avatar {
  display: grid;
  place-items: center;
  width: 24px;
  height: 24px;
  border-radius: 50%;
  background: #79746c;
  color: white;
  font-size: 9px;
  margin-left: auto;
}
.video-art {
  position: relative;
  aspect-ratio: 1.78;
  background: #30302e;
  color: #ffffff;
  border-radius: 10px;
  overflow: hidden;
  padding: 26px 32px;
  outline: 1px solid rgb(0 0 0 / 10%);
  outline-offset: -1px;
}
.video-series {
  font-size: 8px;
  letter-spacing: 1.6px;
  color: #d9d3c8;
}
.lesson-slide {
  margin-top: 35px;
}
.lesson-kicker {
  font-size: 8px;
  letter-spacing: 1.2px;
  color: #d9d3c8;
}
.lesson-slide > p {
  font: 400 clamp(30px, 3.2vw, 47px)/1.05 var(--serif);
  letter-spacing: -0.8px;
  max-width: 430px;
  margin-top: 10px;
  text-wrap: balance;
}
.lesson-slide em {
  color: #d9d3c8;
}
.recall-loop {
  display: flex;
  gap: 9px;
  align-items: center;
  margin-top: 25px;
  font-size: 9px;
  color: #d9d3c8;
}
.recall-loop > span {
  padding: 6px 8px;
  box-shadow: inset 0 0 0 1px #79746c;
  border-radius: 4px;
}
.recall-loop i {
  font-style: normal;
}
.player-controls {
  position: absolute;
  bottom: 0;
  left: 0;
  right: 0;
  display: flex;
  align-items: center;
  gap: 11px;
  padding: 23px 17px 11px;
  background: linear-gradient(transparent, rgb(36 36 34 / 0.4));
  font-size: 10px;
  font-variant-numeric: tabular-nums;
}
.player-play {
  font-size: 10px;
  padding-left: 2px;
}
.player-track {
  flex: 1;
  height: 3px;
  background: rgb(255 255 255 / 0.333);
}
.player-track i {
  display: block;
  width: 1%;
  height: 3px;
  background: #625d55;
  transition: width 240ms var(--ease-out);
}
.video-side h3 {
  font-family: var(--sans);
  font-size: 17px;
  font-weight: 600;
  margin: 16px 0 13px;
}
.video-meta {
  display: flex;
  align-items: center;
  gap: 9px;
  font-size: 11px;
}
.creator-avatar {
  display: grid;
  place-items: center;
  width: 32px;
  height: 32px;
  border-radius: 50%;
  background: #30302e;
  color: #ffffff;
  font-size: 16px;
}
.video-meta > div > span {
  display: block;
  color: var(--muted);
  font-size: 10px;
  margin-top: 2px;
}
.subscribe-pill {
  margin-left: 8px;
  font-size: 10px;
  color: white;
  background: #242422;
  padding: 8px 13px;
  border-radius: 25px;
}
.video-more {
  margin-left: auto;
  background: var(--soft);
  border-radius: 50%;
  width: 30px;
  height: 30px;
  display: grid;
  place-items: center;
  font-size: 12px;
}
.video-description {
  background: var(--soft);
  padding: 13px;
  border-radius: 10px;
  margin-top: 20px;
  font-size: 11px;
  color: var(--muted);
}
.video-description strong {
  color: var(--ink);
  font-weight: 550;
}
.video-description p {
  margin-top: 3px;
  line-height: 1.7;
}
.extension-preview {
  min-width: 0;
  background: var(--surface);
  border-left: 1px solid var(--line);
}
.sidepanel-chrome {
  display: flex;
  justify-content: space-between;
  align-items: center;
  background: var(--soft);
  height: 35px;
  font-size: 11px;
  padding: 0 14px;
  color: var(--muted);
}
.preview-extension {
  display: block;
  width: 100%;
  height: 550px;
  border: 0;
  color-scheme: dark;
}
[hidden] {
  display: none !important;
}
.preview-extension {
  --ext-line: var(--line);
  --ext-soft: var(--soft);
  position: relative;
  display: grid;
  grid-template-rows: 60px 52px minmax(0, 1fr) auto;
  overflow: hidden;
  height: 550px;
  background: var(--surface);
  color: var(--ink);
  font-family: var(--sans);
}
.ext-header {
  display: flex;
  align-items: center;
  gap: 10px;
  padding: 0 14px 0 16px;
  border-bottom: 1px solid var(--ext-line);
  background: var(--surface);
}
.ext-brand {
  width: 24px;
  height: 24px;
  display: grid;
  place-items: center;
  flex: 0 0 auto;
  border: 1px solid var(--line);
  border-radius: 7px;
  font: 750 9px/1 var(--sans);
  letter-spacing: -0.06em;
}
.ext-header h3 {
  flex: 1;
  min-width: 0;
  font-size: 14px;
  line-height: 1.4;
  font-weight: 700;
  letter-spacing: -0.018em;
}
.ext-icon,
.ext-provider {
  width: 40px;
  height: 40px;
  display: inline-grid;
  place-items: center;
  flex: 0 0 auto;
  background: transparent;
  border-radius: 9px;
  transition:
    scale 150ms,
    background-color 150ms;
}
.ext-icon svg {
  width: 17px;
  height: 17px;
  fill: none;
  stroke: currentColor;
  stroke-width: 1.7;
}
.ext-provider svg {
  width: 19px;
  height: 19px;
  fill: currentColor;
  stroke: none;
}
.ext-icon:hover,
.ext-provider:hover,
.ext-copy:hover,
.ext-popup-footer button:hover {
  background: var(--ext-soft);
}
.ext-icon:active,
.ext-provider:active,
.ext-copy:active,
.ext-popup-footer button:active,
.ext-refresh:active {
  scale: 0.96;
}
.ext-toolbar {
  min-height: 52px;
  display: flex;
  align-items: center;
  gap: 3px;
  padding: 6px 9px 6px 10px;
  border-bottom: 1px solid var(--ext-line);
  background: var(--surface);
}
.ext-copy {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 7px;
  min-height: 40px;
  padding: 0 8px 0 7px;
  border-radius: 9px;
  font-size: 11px;
  font-weight: 700;
  white-space: nowrap;
  background: transparent;
  transition:
    scale 150ms,
    background-color 150ms;
}
.ext-copy .copy-state-icons {
  width: 15px;
  height: 15px;
  flex: 0 0 auto;
}
.ext-copy svg {
  width: 15px;
  height: 15px;
  fill: none;
  stroke: currentColor;
  stroke-width: 1.8;
}
.ext-send {
  margin-left: auto;
  display: flex;
  align-items: center;
  gap: 1px;
}
.ext-send > span {
  padding: 0 5px 0 7px;
  color: var(--muted);
  font-size: 10px;
  font-weight: 650;
  white-space: nowrap;
}
.ext-transcript {
  min-height: 0;
  overflow-y: auto;
  overscroll-behavior: contain;
  margin-right: 4px;
  padding: 8px 0 18px;
  scrollbar-width: thin;
  scrollbar-color: #79746c transparent;
}
.ext-paragraph {
  width: 100%;
  min-height: 66px;
  display: grid;
  grid-template-columns: 58px minmax(0, 1fr);
  align-items: start;
  padding: 11px 18px 11px 0;
  background: transparent;
  text-align: left;
  transition: background-color 140ms;
  border-radius: 0;
}
.ext-paragraph:hover,
.ext-paragraph[aria-pressed="true"] {
  background: var(--ext-soft);
}
.ext-paragraph:focus-visible {
  outline-offset: -3px;
}
.ext-timestamp {
  padding-top: 4px;
  color: var(--muted);
  font: 650 10px/1.4 var(--sans);
  font-variant-numeric: tabular-nums;
  text-align: center;
}
.ext-words {
  font-size: 14px;
  line-height: 1.65;
  letter-spacing: -0.008em;
  text-wrap: pretty;
}
.ext-popup-footer {
  display: none;
  min-height: 44px;
  align-items: center;
  justify-content: flex-end;
  padding: 0 10px;
  border-top: 1px solid var(--ext-line);
  background: var(--surface);
}
.browser-demo[data-surface="popup"] .ext-popup-footer {
  display: flex;
}
.ext-popup-footer button {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 7px;
  padding: 0 8px;
  min-height: 40px;
  background: transparent;
  border-radius: 9px;
  font-size: 11px;
  font-weight: 700;
  transition:
    scale 150ms,
    background-color 150ms;
}
.ext-popup-footer svg {
  width: 15px;
  height: 15px;
  stroke-width: 1.7;
}
.preview-extension[data-settings="true"] {
  grid-template-rows: 60px minmax(0, 1fr);
}
.preview-extension[data-settings="true"] .ext-popup-footer {
  display: none;
}
.ext-settings-view {
  min-height: 0;
  overflow-y: auto;
  overscroll-behavior: contain;
  padding: 21px 18px;
}
.ext-setting-row {
  display: grid;
  grid-template-columns: minmax(0, 1fr) auto;
  gap: 18px;
  align-items: center;
  padding: 15px 0;
  border-bottom: 1px solid var(--ext-line);
}
.ext-setting-row:first-child {
  padding-top: 0;
}
.ext-setting-row strong {
  display: block;
  font-size: 13px;
  line-height: 1.35;
}
.ext-setting-row small {
  display: block;
  max-width: 260px;
  margin-top: 4px;
  color: var(--muted);
  font-size: 11px;
  line-height: 1.5;
  text-wrap: pretty;
}
.ext-switch {
  position: relative;
  width: 44px;
  height: 44px;
  padding: 0;
  background: transparent;
}
.ext-switch > span {
  display: block;
  position: relative;
  width: 40px;
  height: 24px;
  border: 1px solid var(--ext-line);
  border-radius: 999px;
  background: var(--ext-soft);
  transition: background-color 160ms;
}
.ext-switch > span:after {
  content: "";
  position: absolute;
  top: 3px;
  left: 3px;
  width: 16px;
  height: 16px;
  border-radius: 50%;
  background: #625d55;
  transition:
    translate 160ms,
    background-color 160ms;
}
.ext-switch[aria-checked="true"] > span {
  background: #242422;
  border-color: #242422;
}
.ext-switch[aria-checked="true"] > span:after {
  translate: 16px 0;
  background: var(--surface);
}
.ext-setting-row select {
  min-height: 40px;
  max-width: 130px;
  border: 1px solid var(--ext-line);
  border-radius: 8px;
  padding: 0 9px;
  background: var(--surface);
  color: var(--ink);
  font: 11px var(--sans);
}
.ext-refresh {
  width: 100%;
  min-height: 40px;
  margin-top: 12px;
  padding: 0 13px;
  border-radius: 9px;
  background: var(--ext-soft);
  font-size: 11px;
  font-weight: 700;
  transition:
    scale 150ms,
    background-color 150ms;
}
.ext-feedback {
  position: absolute;
  z-index: 5;
  top: 124px;
  left: 50%;
  max-width: calc(100% - 30px);
  translate: -50% 8px;
  border-radius: 9px;
  padding: 9px 12px;
  color: white;
  background: #242422;
  box-shadow: 0 8px 28px rgb(0 0 0 / 20%);
  font-size: 11px;
  line-height: 1.35;
  text-align: center;
  opacity: 0;
  pointer-events: none;
  transition:
    opacity 160ms,
    translate 160ms;
}
.ext-feedback.visible {
  opacity: 1;
  translate: -50% 0;
}
.browser-demo[data-surface="popup"] .demo-body {
  grid-template-columns: minmax(0, 1fr);
  min-height: 585px;
}
.browser-demo[data-surface="popup"] .video-side {
  padding-right: 22px;
}
.browser-demo[data-surface="popup"] .video-art {
  max-height: 410px;
}
.browser-demo[data-surface="popup"] .extension-preview {
  position: absolute;
  right: 18px;
  top: 12px;
  width: 380px;
  border: 0;
  border-radius: 13px;
  overflow: hidden;
  box-shadow:
    0 0 0 1px rgb(0 0 0 / 12%),
    0 18px 50px rgb(0 0 0 / 22%);
}
.browser-demo[data-surface="popup"] .preview-extension {
  height: 480px;
}
.browser-demo[data-surface="popup"] .sidepanel-chrome {
  display: none;
}
.demo-guidance {
  max-width: 1160px;
  margin: 21px auto 0;
  display: flex;
  gap: 20px;
  align-items: baseline;
  justify-content: space-between;
  font-size: 12px;
  color: var(--muted);
}
.demo-guidance > span {
  font-size: 10px;
  flex-shrink: 0;
  color: var(--muted);
}
.demo-guidance p > span {
  display: inline-block;
  font-size: 18px;
  margin-right: 8px;
}
.takeaways {
  max-width: 1240px;
  margin: auto;
  padding: 110px 38px 100px;
  display: grid;
  grid-template-columns: 1.65fr 1fr 1fr 1fr;
  gap: 44px;
}
.takeaway-intro h2 {
  font-size: 48px;
  margin: 18px 0;
}
.takeaway-intro > p:last-child {
  font-size: 14px;
  line-height: 1.7;
  color: var(--muted);
}
.benefit {
  padding-top: 52px;
}
.benefit-symbol {
  display: block;
  color: var(--ink);
  font-size: 32px;
  margin-bottom: 24px;
}
.benefit h3 {
  font-size: 16px;
  font-weight: 550;
  line-height: 1.4;
  margin-bottom: 12px;
}
.benefit p {
  font-size: 14px;
  line-height: 1.75;
  color: var(--muted);
}
.pricing-section {
  padding: 83px 38px 85px;
  background: var(--soft);
  box-shadow:
    inset 0 1px rgb(0 0 0 / 4%),
    inset 0 -1px rgb(0 0 0 / 4%);
}
.pricing-cadence {
  display: flex;
  align-items: center;
  justify-content: center;
  margin: 35px 0 28px;
}
.billing-switch {
  background: var(--soft);
}
.billing-switch button {
  font-size: 12px;
  padding: 8px 14px;
  min-height: 40px;
}
.billing-switch button > span {
  font-size: 9px;
  color: var(--ink);
  margin-left: 5px;
}
.pricing-cards {
  display: grid;
  grid-template-columns: repeat(3, minmax(0, 1fr));
  gap: 20px;
  max-width: 1120px;
  margin: auto;
}
.price-card {
  background: var(--surface);
  border-radius: 16px;
  padding: 27px;
  box-shadow:
    0 0 0 1px rgb(0 0 0 / 6%),
    0 4px 8px -5px rgb(0 0 0 / 8%);
  display: flex;
  flex-direction: column;
}
.pro-card {
  background: var(--soft);
  box-shadow:
    0 0 0 1px var(--line),
    0 6px 13px -8px #79746c;
}
.plan-heading {
  display: flex;
  justify-content: space-between;
  align-items: center;
  gap: 10px;
}
.plan-heading h3 {
  font-size: 20px;
  font-weight: 550;
}
.plan-status {
  font-size: 9px;
  color: var(--muted);
  background: var(--soft);
  padding: 4px 8px;
  border-radius: 20px;
  white-space: nowrap;
}
.plan-status.available {
  color: var(--muted);
  background: var(--soft);
}
.plan-description {
  font-size: 13px;
  color: var(--muted);
  margin-top: 9px;
}
.price {
  display: flex;
  gap: 2px;
  align-items: baseline;
  margin-top: 28px;
  min-height: 72px;
  font-variant-numeric: tabular-nums;
  white-space: nowrap;
}
.price-currency {
  font-family: var(--serif);
  font-size: 30px;
  align-self: flex-start;
  margin-top: 11px;
}
.price strong {
  font: 400 66px/1.05 var(--serif);
  letter-spacing: -2px;
}
.price-unit {
  font-size: 12px;
  color: var(--muted);
  margin-left: 7px;
}
.billing-note {
  font-size: 11px;
  color: var(--muted);
  margin: 2px 0 23px;
  min-height: 18px;
}
.billing-note-slot {
  max-height: 0;
  opacity: 0;
  overflow: hidden;
  transform: translateY(-4px);
  transition:
    max-height 260ms cubic-bezier(0.22, 1, 0.36, 1),
    opacity 180ms ease,
    transform 260ms cubic-bezier(0.22, 1, 0.36, 1);
}
.billing-note-slot[data-visible="true"] {
  max-height: 42px;
  opacity: 1;
  transform: translateY(0);
}
.billing-note-slot .billing-note {
  min-height: 0;
}
.price-card > .button {
  width: 100%;
  font-size: 12px;
  min-height: 46px;
  padding: 12px;
  gap: 8px;
}
.plan-features {
  list-style: none;
  padding: 0;
  margin: 27px 0 20px;
  font-size: 12px;
  line-height: 1.65;
}
.plan-features li {
  position: relative;
  padding-left: 21px;
  margin-bottom: 13px;
}
.plan-features li:before {
  content: "✓";
  position: absolute;
  left: 0;
  color: var(--muted);
}
.pro-card .plan-features li:before {
  color: var(--ink);
}
.plan-footnote {
  margin-top: auto;
  padding-top: 19px;
  box-shadow: inset 0 1px rgb(0 0 0 / 6%);
  font-size: 10px;
  line-height: 1.6;
  color: var(--muted);
}
.comparison {
  max-width: 1120px;
  margin: 63px auto 0;
  scroll-margin-top: 35px;
}
.comparison-heading {
  display: flex;
  align-items: baseline;
  justify-content: space-between;
  margin-bottom: 23px;
  gap: 20px;
}
.comparison-heading h3 {
  font-size: 17px;
  font-weight: 500;
}
.comparison-heading > span {
  color: var(--muted);
  font-size: 11px;
}
.comparison-scroll {
  overflow-x: auto;
  scrollbar-width: thin;
}
table {
  border-collapse: collapse;
  width: 100%;
  font-size: 12px;
  line-height: 1.5;
}
th,
td {
  text-align: left;
  padding: 17px 12px;
  border-bottom: 1px solid var(--line);
}
th:first-child {
  padding-left: 0;
  width: 43%;
}
thead th {
  font-size: 13px;
  font-weight: 600;
}
tbody th {
  font-weight: 400;
  color: var(--muted);
}
td {
  color: var(--muted);
}
thead th:nth-child(3),
td:nth-child(3) {
  color: var(--muted);
  background: rgb(245 241 232 / 0.502);
}
.questions {
  max-width: 1164px;
  margin: auto;
  padding: 93px 0 105px;
  display: grid;
  grid-template-columns: 1fr 1.25fr;
  gap: 80px;
}
.questions h2 {
  font-size: 56px;
  margin-top: 20px;
}
.faq-list details {
  border-bottom: 1px solid var(--line);
}
.faq-list summary {
  display: flex;
  justify-content: space-between;
  align-items: center;
  gap: 20px;
  font-size: 14px;
  font-weight: 500;
  cursor: pointer;
  padding: 22px 0;
  min-height: 58px;
  list-style: none;
}
.faq-list summary::-webkit-details-marker {
  display: none;
}
.faq-list summary > span {
  font-weight: 400;
  font-size: 23px;
  color: var(--muted);
  transition: rotate 180ms var(--ease-out);
}
.faq-list details[open] summary > span {
  rotate: 45deg;
}
.faq-list details p {
  color: var(--muted);
  font-size: 14px;
  line-height: 1.75;
  padding: 0 25px 22px 0;
}
.text-button {
  min-height: 44px;
  padding: 0;
  background: transparent;
  color: var(--ink);
  display: block;
  margin-top: 6px;
  font-size: 14px;
}
.closing {
  text-align: center;
  padding: 70px 24px 80px;
  background: var(--soft);
}
.closing-mark {
  color: var(--ink);
  font-size: 43px;
  line-height: 1;
  margin-bottom: 22px;
}
.closing .eyebrow {
  color: var(--muted);
  font-size: 10px;
}
.closing h2 {
  margin: 22px 0 28px;
  font-size: 66px;
}
.closing .cta-note {
  color: var(--muted);
}
.footer {
  max-width: 1320px;
  padding: 23px 38px;
  margin: auto;
  display: flex;
  justify-content: space-between;
  align-items: center;
  gap: 20px;
}
.footer .brand {
  font-size: 11px;
}
.footer > p,
.footer > a:last-child {
  font-size: 11px;
  color: var(--muted);
}
.skip-link {
  position: fixed;
  left: 12px;
  top: -60px;
  background: var(--surface);
  padding: 12px;
  z-index: 10;
}
.skip-link:focus {
  top: 12px;
}
.visually-hidden {
  position: absolute;
  width: 1px;
  height: 1px;
  padding: 0;
  margin: -1px;
  overflow: hidden;
  clip-path: inset(50%);
  white-space: nowrap;
  border: 0;
}
dialog {
  width: min(560px, calc(100% - 32px));
  max-height: calc(100dvh - 40px);
  padding: 38px;
  border: 0;
  border-radius: 18px;
  color: var(--ink);
  background: var(--paper);
  box-shadow:
    0 0 0 1px rgb(0 0 0 / 8%),
    0 30px 90px rgb(0 0 0 / 25%);
  opacity: 0;
  translate: 0 8px;
  transition:
    opacity 180ms var(--ease-out),
    translate 180ms var(--ease-out),
    display 180ms allow-discrete,
    overlay 180ms allow-discrete;
}
dialog[open] {
  opacity: 1;
  translate: 0 0;
}
dialog::backdrop {
  background: rgb(30 30 28 / 40%);
  backdrop-filter: blur(4px);
  opacity: 0;
  transition:
    opacity 180ms,
    display 180ms allow-discrete,
    overlay 180ms allow-discrete;
}
dialog[open]::backdrop {
  opacity: 1;
}
@starting-style {
  dialog[open] {
    opacity: 0;
    translate: 0 12px;
  }
  dialog[open]::backdrop {
    opacity: 0;
  }
}
.dialog-close {
  position: absolute;
  right: 12px;
  top: 10px;
  font-size: 28px;
  background: transparent;
  color: var(--muted);
  width: 44px;
  height: 44px;
  border-radius: 9px;
  transition:
    background-color 150ms,
    scale 150ms;
}
.dialog-close:hover {
  background: var(--hover);
  color: var(--ink);
}
dialog > .eyebrow {
  font-size: 10px;
  margin: 20px 0 12px;
}
dialog h2 {
  font-size: 46px;
}
dialog > p:not(.eyebrow) {
  font-size: 14px;
  color: var(--muted);
  line-height: 1.6;
  margin-top: 14px;
}
dialog ol {
  padding-left: 24px;
  margin: 28px 0;
}
dialog li {
  padding-left: 8px;
  margin-bottom: 21px;
  font-size: 14px;
}
dialog li::marker {
  color: var(--ink);
}
dialog li strong {
  display: block;
  margin-bottom: 5px;
  font-weight: 550;
}
dialog li span {
  display: block;
  color: var(--muted);
  font-size: 13px;
  line-height: 1.6;
}
dialog code {
  font-size: 12px;
  background: var(--soft);
  padding: 2px 4px;
  border-radius: 3px;
  overflow-wrap: anywhere;
}
.download-button {
  width: 100%;
}
dialog > .install-note {
  text-align: center;
  font-size: 11px !important;
}
.prompt-label {
  display: block;
  font-size: 12px;
  color: var(--muted);
  margin: 23px 0 9px;
}
#handoff-prompt {
  display: block;
  width: 100%;
  min-height: 220px;
  max-height: 50vh;
  resize: vertical;
  border: 1px solid var(--line);
  border-radius: 9px;
  padding: 15px;
  font-size: 12px;
  line-height: 1.7;
  color: var(--muted);
  background: var(--soft);
}
#copy-prompt {
  margin-top: 20px;
  min-width: 232px;
}
.copy-state-icons {
  position: relative;
  width: 20px;
  height: 20px;
}
.copy-state-icons > * {
  position: absolute;
  inset: 0;
  display: grid;
  place-items: center;
  transition:
    scale 300ms var(--ease-out),
    opacity 300ms var(--ease-out),
    filter 300ms var(--ease-out);
}
.copy-state-success,
[data-copied="true"] .copy-state-default {
  scale: 0.25;
  opacity: 0;
  filter: blur(4px);
}
[data-copied="true"] .copy-state-success {
  scale: 1;
  opacity: 1;
  filter: blur(0);
}
.toast {
  position: fixed;
  z-index: 20;
  bottom: 24px;
  left: 50%;
  translate: -50% 12px;
  opacity: 0;
  pointer-events: none;
  background: var(--ink);
  color: var(--paper);
  padding: 13px 22px;
  border-radius: 9px;
  font-size: 13px;
  box-shadow: var(--shadow-card);
  transition:
    opacity 160ms,
    translate 160ms var(--ease-out);
}
.toast.visible {
  opacity: 1;
  translate: -50% 0;
}

@media (max-width: 1200px) {
  .hero h1 {
    font-size: 78px;
  }
  .questions {
    margin: 0 38px;
  }
  .takeaways {
    gap: 30px;
  }
  .demo-body {
    grid-template-columns: minmax(0, 1fr) 350px;
  }
  .lesson-slide {
    margin-top: 25px;
  }
  .recall-loop {
    margin-top: 17px;
    gap: 5px;
    font-size: 8px;
  }
  .video-art {
    padding: 22px;
    min-height: 285px;
  }
  .lesson-slide > p {
    font-size: 37px;
  }
  .price-card {
    padding: 23px;
  }
  .plan-description {
    font-size: 12px;
  }
}
@media (max-width: 950px) {
  .header {
    padding: 22px 25px;
  }
  .header nav {
    gap: 20px;
    font-size: 12px;
  }
  .hero {
    padding-top: 60px;
  }
  .hero h1 {
    font-size: 66px;
  }
  .hero-description {
    font-size: 15px;
  }
  .learning-sequence {
    gap: 22px;
    padding: 0;
    margin-top: 53px;
  }
  .learning-card {
    padding: 15px;
  }
  .sequence-label {
    font-size: 7px;
    letter-spacing: 0.7px;
  }
  .lesson-mini {
    padding: 15px 14px 28px;
  }
  .lesson-mini > p {
    font-size: 28px;
  }
  .lesson-mini > span {
    font-size: 6px;
  }
  .words-card blockquote {
    font-size: 28px;
  }
  .excerpt-heading {
    gap: 7px;
    font-size: 6px;
  }
  .question-card > p {
    font-size: 25px;
  }
  .conversation-source {
    padding: 9px;
    gap: 7px;
    font-size: 9px;
  }
  .conversation-bottom {
    font-size: 8px;
  }
  .demo-section {
    padding: 65px 24px 50px;
  }
  .demo-body {
    grid-template-columns: minmax(0, 1fr) 340px;
  }
  .video-side {
    padding: 0 15px 18px;
  }
  .youtube-topbar {
    gap: 10px;
  }
  .youtube-search {
    display: none;
  }
  .video-art {
    aspect-ratio: auto;
    height: 310px;
    padding: 21px;
  }
  .lesson-slide {
    margin-top: 32px;
  }
  .lesson-slide > p {
    font-size: 35px;
  }
  .video-series {
    font-size: 6px;
  }
  .recall-loop {
    flex-wrap: wrap;
    font-size: 8px;
  }
  .recall-loop > span {
    padding: 4px;
  }
  .video-side h3 {
    font-size: 15px;
  }
  .subscribe-pill {
    display: none;
  }
  .demo-guidance {
    display: block;
  }
  .demo-guidance > span {
    display: block;
    margin-top: 7px;
  }
  .takeaways {
    grid-template-columns: 1fr 1fr;
    padding: 70px 38px;
    gap: 35px 50px;
  }
  .benefit {
    padding-top: 20px;
  }
  .benefit-symbol {
    margin-bottom: 17px;
  }
  .pricing-section {
    padding: 70px 25px;
  }
  .pricing-cards {
    gap: 12px;
  }
  .price-card {
    padding: 20px 16px;
  }
  .plan-heading h3 {
    font-size: 18px;
  }
  .plan-status {
    font-size: 8px;
    padding: 3px 6px;
  }
  .price strong {
    font-size: 56px;
  }
  .price-unit {
    font-size: 10px;
    margin-left: 5px;
  }
  .price-card > .button {
    font-size: 10px;
    padding: 11px 8px;
  }
  .plan-features {
    font-size: 11px;
  }
  .billing-note {
    font-size: 10px;
  }
  .plan-description {
    min-height: 37px;
  }
  .questions {
    grid-template-columns: 1fr;
    gap: 26px;
    padding: 65px 0;
  }
  .questions h2 br {
    display: none;
  }
  .questions h2 {
    font-size: 47px;
  }
  .closing h2 {
    font-size: 57px;
  }
  .footer {
    padding: 22px 25px;
    flex-wrap: wrap;
  }
  .footer > p {
    order: 3;
    width: 100%;
    text-align: center;
  }
}
@media (max-width: 720px) {
  .header {
    padding: 18px 20px;
  }
  .header .brand {
    font-size: 12px;
    gap: 7px;
  }
  .header .brand img {
    width: 29px;
    height: 29px;
  }
  .header nav a:not([href="#pricing"]) {
    display: none;
  }
  .header nav {
    margin-left: auto;
  }
  .button-small {
    font-size: 11px;
    padding: 10px 12px;
    gap: 9px;
  }
  .hero {
    padding: 45px 22px 33px;
  }
  .hero h1 {
    font-size: clamp(43px, 8.8vw, 62px);
    max-width: 610px;
  }
  .hero h1 em {
    display: inline-block;
  }
  .hero-copy > .eyebrow {
    font-size: 8px;
    letter-spacing: 1px;
  }
  .hero-description {
    font-size: 14px;
    max-width: 420px;
    margin: auto;
  }
  .hero-description br {
    display: none;
  }
  .hero-actions {
    gap: 19px;
  }
  .hero-actions .button {
    font-size: 12px;
    padding: 13px 15px;
    gap: 12px;
  }
  .secondary-link {
    font-size: 12px;
    gap: 7px;
  }
  .cta-note {
    font-size: 10px;
  }
  .learning-sequence {
    max-width: 520px;
    margin: 41px auto 0;
    gap: 11px;
    align-items: stretch;
  }
  .learning-card {
    padding: 12px;
  }
  .watch-card {
    max-width: 245px;
  }
  .words-card {
    max-width: 245px;
    padding: 15px;
    transform: rotate(3deg) translateY(5px);
  }
  .learning-sequence {
    display: grid;
    grid-template-columns: 1fr 1fr;
  }
  .question-card {
    display: block;
    grid-column: 1 / -1;
    width: 100%;
    max-width: none;
    transform: none;
    margin-top: 13px;
    padding: 18px 22px;
  }
  .question-card .sequence-label {
    margin-bottom: 12px;
  }
  .question-card .conversation-source {
    float: right;
    width: 45%;
    margin: 4px 0 12px 12px;
  }
  .question-card > p {
    font-size: 27px;
    margin: 12px 0 18px;
  }
  .question-card .conversation-bottom {
    clear: both;
    font-size: 10px;
  }
  .sequence-arrow {
    display: none;
  }
  .sequence-label {
    font-size: 7px;
    margin-bottom: 14px;
  }
  .words-card .sequence-label {
    margin-bottom: 19px;
  }
  .lesson-mini {
    padding: 16px 12px 33px;
  }
  .lesson-mini > p {
    font-size: 30px;
    margin: 18px 0;
  }
  .watch-card h3 {
    font-size: 11px;
  }
  .card-caption {
    font-size: 9px;
  }
  .words-card blockquote {
    font-size: 30px;
    margin-top: 19px;
  }
  .excerpt-heading {
    font-size: 6px;
  }
  .timestamp-pill {
    font-size: 10px;
    padding: 3px 6px;
  }
  .excerpt-link {
    font-size: 9px;
    gap: 5px;
  }
  .hero-footnote {
    font-size: 11px;
    margin-top: 31px;
  }
  .demo-section {
    padding: 55px 18px 40px;
  }
  .section-heading h2 {
    font-size: 47px;
  }
  .section-heading .eyebrow {
    font-size: 9px;
    letter-spacing: 1px;
  }
  .section-heading > p:last-child {
    font-size: 14px;
  }
  .demo-toolbar {
    margin-top: 28px;
  }
  .demo-live-label {
    font-size: 8px;
    letter-spacing: 1px;
  }
  .preview-extension {
    grid-template-rows: 60px 56px minmax(0, 1fr) auto;
  }
  .ext-icon,
  .ext-provider {
    width: 44px;
    height: 44px;
  }
  .ext-copy,
  .ext-popup-footer button,
  .ext-refresh,
  .ext-setting-row select {
    min-height: 44px;
  }
  .demo-tabs button {
    font-size: 12px;
    min-height: 44px;
    padding: 8px 14px;
  }
  .demo-body {
    display: flex;
    flex-direction: column;
  }
  .video-side {
    padding: 0 17px 18px;
  }
  .youtube-topbar {
    height: 55px;
  }
  .youtube-search {
    display: flex;
    max-width: 220px;
  }
  .video-art {
    height: auto;
    min-height: 270px;
    aspect-ratio: 1.8;
    padding: 22px 26px;
  }
  .video-series {
    font-size: 7px;
  }
  .lesson-slide {
    margin-top: 23px;
  }
  .lesson-slide > p {
    font-size: 36px;
    max-width: 380px;
  }
  .recall-loop {
    margin-top: 17px;
    flex-wrap: nowrap;
    font-size: 8px;
  }
  .recall-loop > span {
    padding: 5px 6px;
  }
  .video-side h3 {
    font-size: 16px;
  }
  .subscribe-pill {
    display: block;
  }
  .video-description {
    display: none;
  }
  .extension-preview {
    border: 0;
    border-top: 1px solid var(--line);
  }
  .sidepanel-chrome {
    font-size: 10px;
  }
  .preview-extension {
    height: 480px;
  }
  .browser-demo[data-surface="popup"] .demo-body {
    display: flex;
    min-height: 0;
  }
  .browser-demo[data-surface="popup"] .extension-preview {
    position: relative;
    top: auto;
    right: auto;
    width: min(380px, calc(100% - 24px));
    margin: 0 auto 18px;
    border-radius: 13px;
    box-shadow:
      0 0 0 1px rgb(0 0 0 / 12%),
      0 6px 18px rgb(0 0 0 / 8%);
  }
  .browser-demo[data-surface="popup"] .sidepanel-chrome {
    display: none;
  }
  .browser-demo[data-surface="popup"] .video-side {
    padding-right: 17px;
  }
  .browser-bar {
    padding: 10px 12px;
    gap: 12px;
  }
  .preview-label {
    font-size: 7px;
  }
  .demo-guidance {
    font-size: 11px;
  }
  .demo-guidance > span {
    font-size: 10px;
  }
  .takeaways {
    padding: 60px 25px;
    grid-template-columns: 1fr;
    gap: 32px;
  }
  .takeaway-intro h2 {
    font-size: 48px;
  }
  .takeaway-intro .eyebrow br {
    display: none;
  }
  .benefit {
    padding: 0 0 0 43px;
    position: relative;
  }
  .benefit-symbol {
    position: absolute;
    left: 0;
    top: -4px;
    font-size: 27px;
  }
  .benefit h3 {
    margin-bottom: 8px;
  }
  .pricing-section {
    padding: 56px 22px;
  }
  .pricing-cadence {
    flex-direction: column;
    gap: 10px;
    margin: 25px 0;
  }
  .billing-switch button {
    min-height: 44px;
    font-size: 13px;
    padding: 8px 18px;
  }
  .billing-switch button > span {
    font-size: 10px;
  }
  .pricing-cards {
    grid-template-columns: 1fr;
    gap: 18px;
    max-width: 440px;
  }
  .price-card {
    padding: 27px;
  }
  .plan-heading h3 {
    font-size: 22px;
  }
  .plan-status {
    font-size: 10px;
    padding: 4px 9px;
  }
  .plan-description {
    min-height: 0;
    font-size: 14px;
  }
  .price {
    margin-top: 22px;
  }
  .price strong {
    font-size: 66px;
  }
  .price-unit {
    font-size: 13px;
    margin-left: 8px;
  }
  .billing-note {
    font-size: 12px;
  }
  .price-card > .button {
    font-size: 13px;
    min-height: 48px;
  }
  .plan-features {
    font-size: 14px;
  }
  .plan-footnote {
    font-size: 12px;
  }
  .comparison {
    margin-top: 45px;
  }
  .comparison-heading {
    display: block;
  }
  .comparison-heading h3 {
    font-size: 16px;
  }
  .comparison-heading > span {
    display: block;
    margin-top: 8px;
    font-size: 11px;
  }
  table {
    min-width: 620px;
    font-size: 12px;
  }
  th:first-child {
    width: 39%;
  }
  .questions {
    margin: 0 25px;
    padding: 55px 0 65px;
    gap: 24px;
  }
  .questions h2 {
    font-size: 47px;
  }
  .questions h2 br {
    display: block;
  }
  .questions .eyebrow {
    font-size: 9px;
  }
  .faq-list summary {
    font-size: 14px;
    padding: 19px 0;
  }
  .faq-list details p {
    font-size: 14px;
  }
  .closing {
    padding: 55px 20px 60px;
  }
  .closing h2 {
    font-size: 44px;
  }
  .closing .eyebrow {
    font-size: 8px;
    letter-spacing: 1px;
  }
  .closing .button {
    font-size: 13px;
  }
  .footer {
    padding: 20px;
    gap: 12px;
  }
  .footer .brand {
    font-size: 10px;
  }
  .footer > a:last-child {
    font-size: 10px;
  }
  .footer > p {
    font-size: 10px;
  }
  dialog {
    padding: 28px 24px;
  }
  dialog h2 {
    font-size: 41px;
  }
  .toast {
    width: max-content;
    max-width: calc(100vw - 32px);
    font-size: 12px;
  }
}
@media (max-width: 390px) {
  .ext-copy > span:last-child {
    display: none;
  }
  .ext-copy {
    min-width: 44px;
  }
  .header {
    gap: 12px;
  }
  .header nav {
    display: none;
  }
  .hero {
    padding-left: 16px;
    padding-right: 16px;
  }
  .hero-actions {
    flex-direction: column;
    gap: 9px;
  }
  .hero h1 {
    font-size: 43px;
  }
  .learning-sequence {
    gap: 10px;
  }
  .learning-card {
    padding: 11px;
  }
  .lesson-mini > p {
    font-size: 25px;
  }
  .words-card blockquote {
    font-size: 26px;
  }
  .excerpt-heading > span:last-child {
    display: none;
  }
  .excerpt-link {
    font-size: 8px;
  }
  .video-art {
    padding: 20px;
    min-height: 267px;
  }
  .lesson-slide > p {
    font-size: 33px;
  }
  .recall-loop {
    font-size: 7px;
    gap: 4px;
  }
  .recall-loop > span {
    padding: 5px 4px;
  }
  .youtube-search {
    max-width: 135px;
  }
  .youtube-topbar {
    gap: 12px;
  }
  .youtube-avatar {
    display: none;
  }
}
@media (prefers-reduced-motion: reduce) {
  html {
    scroll-behavior: auto;
  }
  *,
  *:before,
  *:after {
    transition: none !important;
    animation: none !important;
  }
  .button:active,
  .demo-tabs button:active,
  .billing-switch button:active,
  .dialog-close:active,
  .ext-icon:active,
  .ext-provider:active,
  .ext-copy:active,
  .ext-popup-footer button:active,
  .ext-refresh:active {
    scale: 1;
  }
}

/* A single opening composition: concise hero, then a scroll-expanded preview. */
.hero {
  max-width: none;
  min-height: max(420px, calc(100svh - 98px - 260px));
  display: flex;
  align-items: center;
  justify-content: center;
  padding: 48px 32px 42px;
}
.hero h1 {
  margin-top: 0;
}
.hero-actions {
  margin-top: 27px;
}
.demo-section {
  padding: 0 32px 82px;
  background: linear-gradient(to bottom, var(--paper) 0 220px, var(--soft) 220px 100%);
  box-shadow: none;
  scroll-margin-top: 44px;
}
.preview-stage {
  max-width: 1320px;
  margin: auto;
}
.browser-demo {
  max-width: none;
  transform: scale(var(--preview-scale, 1));
  transform-origin: center top;
}
.feature-story {
  max-width: 1240px;
  padding: 109px 38px 116px;
  margin: auto;
}
.feature-intro {
  text-align: center;
  margin-bottom: 56px;
}
.feature-intro h2 {
  font-size: 59px;
}
.feature-intro > p {
  font-size: 15px;
  color: var(--muted);
  margin-top: 23px;
}
.feature-row {
  display: grid;
  grid-template-columns: 1fr 1.2fr;
  align-items: center;
  gap: 82px;
  min-height: 540px;
  padding: 46px 0;
}
.feature-row + .feature-row {
  margin-top: 20px;
}
.feature-copy {
  max-width: 370px;
}
.feature-step {
  font-size: 11px;
  font-weight: 550;
  letter-spacing: 1.6px;
  color: var(--muted);
}
.feature-copy h3 {
  font: 400 58px/1.04 var(--serif);
  letter-spacing: -0.025em;
  margin: 22px 0;
}
.feature-copy h3 em {
  font-weight: 400;
  color: var(--ink);
}
.feature-copy > p {
  font-size: 16px;
  line-height: 1.8;
  color: var(--muted);
}
.feature-visual {
  display: grid;
  align-items: center;
  justify-items: center;
  min-height: 450px;
  padding: 36px;
  border-radius: 20px;
  background: var(--soft);
}
.feature-row-reverse {
  grid-template-columns: 1.2fr 1fr;
}
.feature-row-reverse .feature-copy {
  order: 2;
  margin-left: auto;
}
.feature-row-reverse .feature-visual {
  order: 1;
}
.reading-sheet {
  width: 100%;
  max-width: 398px;
  background: var(--surface);
  box-shadow: var(--shadow-card);
  border-radius: 10px;
  overflow: hidden;
}
.reading-header {
  min-height: 63px;
  display: flex;
  align-items: center;
  gap: 10px;
  padding: 0 16px;
  border-bottom: 1px solid var(--line);
}
.reading-header strong {
  font-size: 14px;
  font-weight: 600;
}
.reading-header button {
  display: grid;
  place-items: center;
  margin-left: auto;
  width: 44px;
  height: 44px;
  border-radius: 8px;
  background: transparent;
  color: var(--muted);
  transition:
    background-color 150ms,
    scale 150ms;
}
.reading-header button:hover {
  background: var(--hover);
}
.reading-header button:active {
  scale: 0.96;
}
.reading-content {
  padding: 12px 0;
}
.reading-content > p {
  position: relative;
  padding: 12px 21px 12px 57px;
  font-size: 13px;
  line-height: 1.7;
  color: var(--muted);
}
.reading-content > p > span {
  position: absolute;
  left: 13px;
  top: 16px;
  font: 10px/1.4 var(--sans);
  color: var(--muted);
  font-variant-numeric: tabular-nums;
}
.reading-content > p.reading-highlight {
  color: var(--ink);
  background: var(--soft);
  box-shadow: inset 2px 0 #79746c;
}
.reading-footer {
  padding: 15px 20px;
  font-size: 10px;
  color: var(--muted);
  border-top: 1px solid var(--line);
}
.seek-visual {
  background: var(--soft);
}
.moment-player {
  width: 100%;
  max-width: 455px;
  box-shadow: var(--shadow-card);
  background: var(--surface);
  border-radius: 12px;
  overflow: hidden;
}
.moment-screen {
  position: relative;
  background: #30302e;
  padding: 25px 30px 55px;
  min-height: 259px;
  color: white;
}
.moment-screen > span {
  color: var(--muted);
  font-size: 8px;
  letter-spacing: 1.3px;
}
.moment-screen > p {
  margin-top: 23px;
  max-width: 280px;
  font: 400 44px/1.07 var(--serif);
  letter-spacing: -0.5px;
  text-wrap: balance;
}
.moment-screen em {
  color: #d9d3c8;
}
.moment-player-controls {
  position: absolute;
  bottom: 17px;
  left: 25px;
  right: 25px;
  display: flex;
  align-items: center;
  gap: 12px;
  font-size: 10px;
  font-variant-numeric: tabular-nums;
}
.moment-player-controls > span:first-child {
  font-size: 9px;
  padding-left: 2px;
}
.moment-track {
  flex: 1;
  height: 3px;
  background: #79746c;
}
.moment-track i {
  display: block;
  width: 21%;
  height: 100%;
  background: #79746c;
  transition: width 220ms var(--ease-out);
}
.moment-transcript {
  padding: 10px;
}
.moment-transcript button {
  display: flex;
  align-items: center;
  gap: 12px;
  width: 100%;
  min-height: 56px;
  padding: 12px 13px;
  background: transparent;
  text-align: left;
  font-size: 12px;
  border-radius: 7px;
  color: var(--muted);
  transition: background-color 160ms;
}
.moment-transcript button[aria-pressed="true"] {
  background: var(--soft);
  color: var(--muted);
}
.moment-transcript button > span:first-child {
  padding: 4px 6px;
  background: var(--soft);
  border-radius: 4px;
  font: 11px var(--sans);
  font-variant-numeric: tabular-nums;
}
.moment-transcript button > span:last-child {
  margin-left: auto;
  font-size: 17px;
}
.ai-visual {
  background: var(--soft);
}
.conversation-preview {
  width: 100%;
  max-width: 430px;
  padding: 24px;
  background: var(--surface);
  box-shadow: var(--shadow-card);
  border-radius: 12px;
}
.conversation-preview-heading {
  display: flex;
  justify-content: space-between;
  align-items: baseline;
  gap: 8px;
  font-size: 12px;
  margin-bottom: 20px;
}
.conversation-preview-heading > span:last-child {
  color: var(--muted);
  font-size: 8px;
}
.attached-transcript {
  display: flex;
  align-items: center;
  gap: 10px;
  padding: 12px;
  border-radius: 7px;
  background: var(--soft);
  color: var(--muted);
  font-size: 10px;
  line-height: 1.5;
}
.attached-transcript > span:first-child {
  font-size: 27px;
  color: var(--muted);
}
.attached-transcript small {
  display: block;
  font-size: 9px;
  color: var(--muted);
  margin-top: 3px;
}
.attached-transcript > span:last-child {
  margin-left: auto;
}
.question-bubble {
  margin: 19px 0 20px 43px;
  padding: 14px 17px;
  background: var(--soft);
  border-radius: 13px 13px 3px 13px;
  font-size: 12px;
  line-height: 1.65;
  color: var(--muted);
}
.answer-preview {
  display: flex;
  align-items: flex-start;
  gap: 12px;
  color: var(--muted);
  font-size: 11px;
  line-height: 1.7;
}
.answer-preview > span {
  color: var(--muted);
  font-size: 25px;
}
.answer-preview ol {
  margin: 1px 0 16px;
  padding-left: 16px;
}
.answer-preview li {
  padding-left: 2px;
  margin-bottom: 8px;
}
.feature-provider-actions {
  display: flex;
  align-items: center;
  gap: 7px;
  padding-top: 16px;
  border-top: 1px solid var(--line);
}
.feature-provider-actions > span {
  margin-right: auto;
  font-size: 10px;
  color: var(--muted);
}
.feature-provider-actions button {
  min-height: 40px;
  padding: 8px 10px;
  border-radius: 7px;
  color: var(--muted);
  font-size: 11px;
  background: var(--soft);
  transition:
    scale 150ms,
    background-color 150ms;
}
.feature-provider-actions button:hover {
  background: var(--hover);
}
.feature-provider-actions button:active {
  scale: 0.96;
}
.feature-provider-actions button > span {
  margin-left: 4px;
}
.pricing-section .section-heading h2 {
  margin-top: 0;
}
.questions h2 {
  margin-top: 0;
}
.closing {
  padding-top: 84px;
  padding-bottom: 91px;
}
.closing h2 {
  margin-top: 0;
}
.selected-plan-price {
  font: 400 38px/1.3 var(--serif);
  color: var(--ink);
  margin-top: 27px;
  font-variant-numeric: tabular-nums;
}
dialog > .checkout-preview-note {
  padding: 16px;
  border-radius: 9px;
  background: var(--soft);
  font-size: 13px;
  margin: 23px 0;
}
@media (min-width: 1450px) {
  .hero h1 {
    font-size: 94px;
  }
  .hero-description {
    font-size: 17px;
  }
}
@media (max-width: 1000px) {
  .feature-row,
  .feature-row-reverse {
    gap: 42px;
  }
  .feature-visual {
    padding: 24px;
  }
  .feature-copy h3 {
    font-size: 50px;
  }
  .feature-copy > p {
    font-size: 15px;
  }
  .feature-intro h2 {
    font-size: 53px;
  }
  .moment-screen {
    padding-left: 24px;
  }
  .conversation-preview {
    padding: 18px;
  }
  .feature-provider-actions {
    flex-wrap: wrap;
  }
  .feature-provider-actions > span {
    width: 100%;
  }
}
@media (max-width: 720px) {
  .hero {
    min-height: max(360px, calc(100svh - 80px - 290px));
    padding: 45px 22px 35px;
  }
  .hero h1 {
    margin-top: 0;
  }
  .hero-actions {
    flex-direction: row;
    margin-top: 23px;
  }
  .demo-section {
    padding: 0 18px 44px;
    background: linear-gradient(to bottom, var(--paper) 0 150px, var(--soft) 150px 100%);
  }
  .feature-story {
    padding: 65px 24px 70px;
  }
  .feature-intro {
    margin-bottom: 39px;
  }
  .feature-intro h2 {
    font-size: 46px;
  }
  .feature-intro > p {
    max-width: 340px;
    margin: 18px auto 0;
    font-size: 14px;
    line-height: 1.8;
  }
  .feature-row,
  .feature-row-reverse {
    grid-template-columns: 1fr;
    gap: 30px;
    min-height: 0;
    padding: 27px 0;
  }
  .feature-row + .feature-row {
    margin-top: 36px;
  }
  .feature-row-reverse .feature-copy,
  .feature-row-reverse .feature-visual {
    order: initial;
    margin-left: 0;
  }
  .feature-copy {
    max-width: 390px;
  }
  .feature-copy h3 {
    font-size: 45px;
    margin: 17px 0;
  }
  .feature-copy > p {
    font-size: 15px;
    line-height: 1.75;
  }
  .feature-step {
    font-size: 10px;
  }
  .feature-visual {
    min-height: 0;
    padding: 26px 20px;
    border-radius: 17px;
  }
  .reading-content > p {
    padding-right: 17px;
    font-size: 13px;
  }
  .reading-footer {
    font-size: 10px;
  }
  .moment-screen {
    padding: 23px 25px 55px;
    min-height: 245px;
  }
  .moment-screen > p {
    font-size: 41px;
  }
  .moment-transcript button {
    font-size: 11px;
    padding: 10px;
    gap: 9px;
  }
  .conversation-preview {
    padding: 20px;
  }
  .feature-provider-actions {
    flex-wrap: nowrap;
  }
  .feature-provider-actions > span {
    width: auto;
  }
  .feature-provider-actions button {
    min-height: 44px;
  }
  .closing {
    padding: 61px 20px 68px;
  }
}
@media (max-width: 390px) {
  .hero {
    padding-left: 16px;
    padding-right: 16px;
  }
  .hero h1 {
    font-size: 42px;
  }
  .feature-story {
    padding-left: 19px;
    padding-right: 19px;
  }
  .feature-visual {
    padding: 22px 14px;
  }
  .reading-content > p {
    font-size: 12px;
    padding-left: 49px;
  }
  .reading-content > p > span {
    left: 11px;
  }
  .moment-screen > p {
    font-size: 37px;
  }
  .conversation-preview {
    padding: 16px;
  }
  .conversation-preview-heading {
    flex-direction: column;
  }
  .feature-provider-actions {
    flex-wrap: wrap;
  }
  .feature-provider-actions > span {
    width: 100%;
  }
}
@media (prefers-reduced-motion: reduce) {
  .browser-demo {
    transform: none;
  }
  .reading-header button:active,
  .feature-provider-actions button:active {
    scale: 1;
  }
}

/* Neutral surfaces and Noto's wider, more substantial letterforms. */
.hero h1 {
  font-size: 76px;
  line-height: 1.15;
  letter-spacing: -0.045em;
}
.hero-copy {
  max-width: 1120px;
}
.feature-intro h2 {
  font-size: 51px;
  line-height: 1.2;
}
.feature-copy h3 {
  font-size: 49px;
  line-height: 1.18;
  letter-spacing: -0.035em;
}
.closing h2 {
  font-size: 54px;
  line-height: 1.2;
}
.questions h2 {
  font-size: 49px;
}
.plan-heading h3 {
  font-size: 23px;
  font-weight: 500;
}
.comparison-heading h3 {
  font-size: 20px;
  font-weight: 400;
}
.ext-header h3,
.video-side h3 {
  font-family: var(--sans);
}
.lesson-slide > p {
  font-size: clamp(28px, 2.7vw, 39px);
  line-height: 1.2;
}
.moment-screen > p {
  font-size: 35px;
  line-height: 1.23;
}
.price strong {
  font-size: 58px;
  line-height: 1.2;
  letter-spacing: -0.045em;
}
.price-currency {
  font-size: 25px;
  margin-top: 12px;
}
dialog h2 {
  font-size: 38px;
  line-height: 1.2;
}
.selected-plan-price {
  font-size: 32px;
}
.pricing-section {
  background: var(--surface);
}
.price-card {
  background: var(--paper);
}
.button {
  background: var(--accent);
  color: var(--accent-foreground);
}
.button:hover:not(:disabled) {
  background: var(--accent-hover);
}
.button-outline {
  background: var(--surface);
  color: var(--ink);
  box-shadow: inset 0 0 0 1px var(--line);
}
.button-outline:hover:not(:disabled) {
  background: var(--hover);
}
.inverse-surface {
  background: var(--soft);
  color: var(--ink);
  box-shadow:
    0 0 0 1px rgb(0 0 0 / 6%),
    0 6px 16px -10px rgb(0 0 0 / 20%);
}
.inverse-surface h2 em {
  color: #eae5db;
}
.inverse-surface :is(.plan-description, .price-unit, .billing-note, .plan-footnote) {
  color: #d9d3c8;
}
.inverse-surface .plan-features {
  color: #f5f1e8;
}
.inverse-surface .plan-features li:before {
  color: #f5f1e8;
}
.inverse-surface .plan-footnote {
  box-shadow: inset 0 1px rgb(255 255 255 / 18%);
}
.inverse-surface .button {
  background: var(--accent);
  color: var(--accent-foreground);
}
.inverse-surface .button:hover:not(:disabled) {
  background: var(--accent-hover);
}
.inverse-surface .button:focus-visible {
  outline-color: var(--accent);
}
.player-track,
.moment-track {
  background: rgb(255 255 255 / 24%);
}
.player-track i,
.moment-track i {
  background: var(--surface);
}
@media (min-width: 1450px) {
  .hero h1 {
    font-size: 82px;
  }
}
@media (max-width: 1200px) {
  .hero h1 {
    font-size: 66px;
  }
}
@media (max-width: 950px) {
  .hero h1 {
    font-size: 57px;
  }
  .feature-intro h2 {
    font-size: 46px;
  }
  .feature-copy h3 {
    font-size: 42px;
  }
  .closing h2 {
    font-size: 47px;
  }
  .lesson-slide > p {
    font-size: 30px;
  }
  .moment-screen > p {
    font-size: 32px;
  }
  .price strong {
    font-size: 49px;
  }
  .price-unit {
    font-size: 10px;
  }
}
@media (max-width: 720px) {
  .hero h1 {
    font-size: clamp(33px, 7.2vw, 48px);
    line-height: 1.2;
  }
  .section-heading h2,
  .feature-intro h2 {
    font-size: 38px;
    line-height: 1.25;
  }
  .feature-copy h3 {
    font-size: 38px;
  }
  .questions h2 {
    font-size: 38px;
  }
  .closing h2 {
    font-size: 36px;
  }
  .lesson-slide > p {
    font-size: 29px;
  }
  .moment-screen > p {
    font-size: 32px;
  }
  .price strong {
    font-size: 59px;
  }
  .price-unit {
    font-size: 12px;
  }
  dialog h2 {
    font-size: 32px;
  }
}
@media (max-width: 390px) {
  .hero h1 {
    font-size: 33px;
  }
  .feature-intro h2,
  .section-heading h2 {
    font-size: 34px;
  }
  .feature-copy h3 {
    font-size: 35px;
  }
  .closing h2 {
    font-size: 31px;
  }
  .moment-screen > p {
    font-size: 28px;
  }
  .lesson-slide > p {
    font-size: 27px;
  }
}