body {
  min-height: 100vh;
}

button, input, select { font: inherit; }
button { cursor: pointer; }

.page-shell {
  width: min(1100px, calc(100% - 64px));
  min-height: calc(100vh - 162px);
  margin: 0 auto;
  padding: 60px 0 80px;
  display: grid;
  grid-template-columns: minmax(0, 1fr) minmax(340px, 410px);
  gap: clamp(44px, 7vw, 100px);
  align-items: center;
}

.intro { max-width: 600px; }
.eyebrow {
  margin: 0 0 13px;
  color: var(--green);
  font-size: 12px;
  font-weight: 800;
  letter-spacing: .12em;
  text-transform: uppercase;
}

.intro h1 {
  margin: 0;
  max-width: 650px;
  color: var(--navy);
  font-size: clamp(34px, 4vw, 50px);
  font-weight: 650;
  line-height: 1.42;
  letter-spacing: -.035em;
}

.intro-copy {
  max-width: 520px;
  margin: 24px 0;
  color: var(--muted);
  font-size: 16px;
  line-height: 1.8;
}

.promise-list {
  display: flex;
  flex-wrap: wrap;
  gap: 10px;
}

.promise-list span {
  border-radius: 999px;
  border: 1px solid rgba(75, 184, 199, .22);
  background: rgba(255, 255, 255, .78);
  padding: 8px 12px;
  color: var(--navy);
  font-size: 13px;
  font-weight: 650;
}

.account-card {
  min-height: 500px;
  border: 1px solid var(--line);
  border-radius: 24px;
  background: white;
  padding: 32px;
  box-shadow: var(--shadow);
}

.tabs {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 5px;
  border-radius: 12px;
  background: var(--mint);
  padding: 4px;
}

.tab {
  border: 0;
  border-radius: 9px;
  background: transparent;
  padding: 10px;
  color: var(--muted);
  font-weight: 700;
}

.tab.is-active {
  background: #fff;
  color: var(--navy);
  box-shadow: 0 2px 8px rgba(18, 53, 107, .10);
}

.message {
  margin: 18px 0 0;
  border-radius: 10px;
  background: #eef5ff;
  padding: 11px 13px;
  color: #2d4f8f;
  font-size: 13px;
  line-height: 1.55;
}

.message.is-error { background: #fff0ee; color: var(--danger); }
.message.is-success { background: var(--mint); color: var(--navy); }

.form-panel { padding-top: 27px; }
.panel-heading { margin-bottom: 22px; }
.panel-heading h2, .result-panel h2, #account-view h2 {
  margin: 0 0 7px;
  font-size: 24px;
  letter-spacing: -.035em;
}
.panel-heading p, .result-panel p {
  margin: 0;
  color: var(--muted);
  font-size: 14px;
  line-height: 1.65;
}

form { display: grid; gap: 15px; }
label {
  display: grid;
  gap: 7px;
  color: var(--navy);
  font-size: 13px;
  font-weight: 700;
}

input, select {
  width: 100%;
  min-height: 46px;
  border: 1px solid var(--line);
  border-radius: 11px;
  background: #fff;
  padding: 10px 12px;
  color: var(--ink);
  outline: none;
  transition: border-color .15s, box-shadow .15s;
}

input:focus, select:focus {
  border-color: var(--green);
  box-shadow: 0 0 0 3px rgba(75, 184, 199, .18);
}

.field-help {
  margin: -8px 0 0;
  color: var(--muted);
  font-size: 12px;
  line-height: 1.5;
}

.primary-button, .secondary-button {
  width: 100%;
  min-height: 47px;
  border-radius: 11px;
  padding: 11px 16px;
  font-weight: 800;
}
.primary-button { border: 0; background: var(--cyan-dark); color: #fff; }
.primary-button:hover { background: #076a7b; }
.secondary-button { border: 1px solid var(--line); background: #fff; color: var(--ink); }
.primary-button:disabled, .secondary-button:disabled { cursor: wait; opacity: .58; }

.text-button, .back-button {
  border: 0;
  background: transparent;
  color: var(--green);
  font-size: 13px;
  font-weight: 700;
}
.text-button { justify-self: center; padding: 4px 10px; }
.back-button { margin: -8px 0 23px; padding: 0; }

.result-panel { padding-top: 50px; text-align: center; }
.result-panel .secondary-button { margin: 28px 0 12px; }
.result-icon {
  width: 54px;
  height: 54px;
  margin: 0 auto 20px;
  display: grid;
  place-items: center;
  border-radius: 50%;
  background: var(--lime);
  color: var(--green-dark);
  font-size: 24px;
}

.account-topline {
  display: flex;
  align-items: center;
  gap: 8px;
  margin-bottom: 9px;
  color: var(--green);
  font-size: 13px;
  font-weight: 800;
}
.success-dot { width: 9px; height: 9px; border-radius: 50%; background: var(--cyan); }
#account-email { display: block; margin-top: 5px; color: var(--muted); font-size: 15px; font-weight: 550; overflow-wrap: anywhere; }

.is-authenticated .page-shell { grid-template-columns: 1fr; width: min(1176px, calc(100% - 64px)); padding-top: 40px; align-items: start; }
.is-authenticated .intro { display: none; }
.is-authenticated .account-card { width: 100%; min-height: 0; padding: 0; border: 0; border-radius: 0; background: transparent; box-shadow: none; }
.dashboard-header { display: flex; align-items: flex-start; justify-content: space-between; gap: 18px; }
.compact-button { border: 1px solid var(--line); border-radius: 10px; background: #fff; padding: 8px 13px; color: var(--muted); font-size: 12px; font-weight: 750; }
.dashboard-grid { display: grid; grid-template-columns: minmax(0, 1.15fr) minmax(280px, .85fr); gap: 20px; margin-top: 28px; }
.today-column { display: grid; gap: 16px; }
.today-card { border: 1px solid var(--line); border-radius: 20px; padding: 24px; background: #fff; }
.review-card { background: linear-gradient(120deg, #eefaff, var(--mint)); color: var(--navy); border-color: #cee9ed; }
.new-card { background: white; }
.card-kicker { margin: 0 0 20px; color: inherit; opacity: .72; font-size: 12px; font-weight: 850; letter-spacing: .08em; text-transform: uppercase; }
.count-line { display: flex; align-items: baseline; gap: 8px; }
.count-line strong { font-size: 50px; font-weight: 600; letter-spacing: -.04em; line-height: 1; }
.count-line span { font-size: 14px; font-weight: 700; }
.card-copy { min-height: 42px; margin: 13px 0 20px; color: inherit; opacity: .78; font-size: 13px; line-height: 1.6; }
.review-card .primary-button { background: var(--cyan-dark); color: white; }
.review-card .primary-button:disabled { background: #deebee; color: var(--muted); cursor: default; }
.dashboard-side { display: grid; align-content: start; gap: 16px; }

.access-card {
  border-radius: 17px;
  background: white;
  padding: 21px;
  color: var(--navy);
  border: 1px solid var(--line);
}
.access-label { margin: 0 0 7px; color: var(--muted); font-size: 12px; font-weight: 700; }
.access-title { margin: 0; font-size: 21px; font-weight: 850; }
.access-meta { margin: 13px 0 0; color: var(--muted); font-size: 13px; }

.library-panel { border: 1px solid var(--line); border-radius: 18px; padding: 20px; background: #fff; }
.section-heading { display: flex; align-items: flex-start; justify-content: space-between; gap: 12px; }
.section-heading .eyebrow { margin-bottom: 4px; }
.section-heading h3 { margin: 0; font-size: 19px; }
.section-heading > span { border-radius: 999px; background: var(--mint); padding: 6px 9px; color: var(--navy); font-size: 10px; font-weight: 750; }
.library-list { display: grid; grid-template-columns: 1fr; gap: 8px; margin-top: 16px; }
.library-link {
  display: grid;
  grid-template-columns: 1fr auto;
  align-items: center;
  gap: 10px;
  width: 100%;
  border: 0;
  border-radius: 10px;
  background: #f4faf9;
  padding: 11px 12px;
  color: var(--ink);
  text-align: left;
  font-size: 12px;
  font-weight: 750;
}
.library-link:hover { background: var(--mint); color: var(--navy); }
.library-link small { color: var(--muted); font-size: 10px; font-weight: 650; }
.library-empty { margin: 0; color: var(--muted); font-size: 12px; line-height: 1.6; }

.library-view { margin-top: 28px; border-top: 1px solid var(--line); padding-top: 25px; }
.library-back { margin: 0 0 20px; }
.library-view-header { display: flex; align-items: flex-start; justify-content: space-between; gap: 18px; }
.library-view-header h2 { margin-bottom: 9px !important; }
.library-view-header p:last-child { max-width: 650px; margin: 0; color: var(--muted); font-size: 13px; line-height: 1.65; }
.preview-badge { flex: 0 0 auto; border-radius: 999px; background: var(--mint); padding: 7px 10px; color: var(--navy); font-size: 10px; font-weight: 800; }
.library-toolbar { display: grid; grid-template-columns: minmax(0, 1fr) minmax(220px, .55fr); gap: 13px; margin: 25px 0 14px; }
.library-toolbar select { appearance: none; background: #fff; }
.library-results-meta { display: flex; justify-content: space-between; gap: 12px; margin-bottom: 14px; color: var(--muted); font-size: 11px; }
.word-card-grid { display: grid; grid-template-columns: repeat(2, minmax(0, 1fr)); gap: 16px; }
.word-card { overflow: hidden; border: 1px solid var(--line); border-radius: 18px; background: #fff; }
.word-image-wrap { display: grid; place-items: center; aspect-ratio: 16 / 9; background: var(--mint); }
.word-image { width: 100%; height: 100%; object-fit: contain; }
.word-card-body { padding: 18px; }
.word-topline { display: flex; align-items: flex-start; justify-content: space-between; gap: 12px; }
.word-title-with-audio { display: flex; min-width: 0; align-items: center; gap: 9px; }
.word-title { margin: 0; font-family: Georgia, serif; font-size: 27px; line-height: 1.12; overflow-wrap: anywhere; }
.word-pos { flex: 0 0 auto; border-radius: 999px; background: var(--mint); padding: 5px 8px; color: var(--navy); font-size: 10px; font-weight: 800; }
.word-definition-zh { margin: 11px 0 6px; color: var(--ink); font-size: 15px; font-weight: 750; line-height: 1.55; }
.word-definition-en { margin: 0; color: var(--muted); font-size: 12px; line-height: 1.65; }
.word-definition-with-audio { display: flex; align-items: flex-start; gap: 8px; }
.word-definition-with-audio .word-definition-en { flex: 1; }
.inline-audio-button,
.detail-audio-button {
  flex: 0 0 auto;
  min-height: 28px;
  border: 1px solid #b8e4e7;
  border-radius: 999px;
  background: #eefafb;
  padding: 5px 9px;
  color: var(--navy);
  font-size: 10px;
  font-weight: 800;
}
.inline-audio-button:hover,
.detail-audio-button:hover { border-color: var(--cyan); background: #dff6f7; }
.inline-audio-button:disabled,
.detail-audio-button:disabled { opacity: .65; }
.word-meta { display: flex; flex-wrap: wrap; gap: 7px; margin-top: 13px; }
.word-meta span { border-radius: 999px; background: var(--mint); padding: 6px 8px; color: var(--navy); font-size: 10px; font-weight: 700; }
.word-detail { margin-top: 14px; border-top: 1px solid #efeee8; padding-top: 13px; }
.word-detail:first-child { margin-top: 16px; }
.word-detail dt { display: flex; align-items: center; gap: 7px; margin: 0 0 5px; color: var(--green); font-size: 10px; font-weight: 850; letter-spacing: .04em; text-transform: uppercase; }
.detail-audio-button { min-height: 24px; padding: 3px 8px; text-transform: none; letter-spacing: 0; }
.word-detail dd { margin: 0; color: var(--muted); font-size: 12px; line-height: 1.65; white-space: pre-line; }
.word-actions { display: grid; grid-template-columns: 1fr auto; gap: 8px; margin-top: 16px; }
.word-actions .primary-button { min-height: 40px; padding: 8px 11px; font-size: 12px; }
.external-actions { display: flex; gap: 6px; }
.external-link { display: grid; place-items: center; min-width: 40px; border: 1px solid var(--line); border-radius: 10px; color: var(--green); text-decoration: none; font-size: 11px; font-weight: 800; }
.external-link:hover { border-color: var(--green); }
.word-card-empty { grid-column: 1 / -1; border: 1px dashed #c9c8bd; border-radius: 16px; padding: 30px; color: var(--muted); text-align: center; font-size: 13px; }

.review-view {
  margin-top: 28px;
  border-top: 1px solid var(--line);
  padding-top: 24px;
}

.review-header {
  display: grid;
  grid-template-columns: 1fr auto 1fr;
  align-items: start;
  gap: 16px;
}

.review-header > div:nth-child(2) { text-align: center; }
.review-header h2 { margin: 0 !important; }
.review-exit { justify-self: start; margin: 5px 0 0; }
.review-progress {
  justify-self: end;
  display: flex;
  align-items: baseline;
  gap: 4px;
  color: var(--muted);
  font-size: 14px;
  font-weight: 750;
}
.review-progress strong { color: var(--green); font-family: Georgia, serif; font-size: 28px; }
.review-progress-track {
  height: 7px;
  overflow: hidden;
  margin: 18px auto 0;
  border-radius: 999px;
  background: #e8eff3;
}
.review-progress-track span {
  display: block;
  width: 0;
  height: 100%;
  border-radius: inherit;
  background: var(--green);
  transition: width .25s ease;
}
.review-session-meta {
  margin: 10px 0 20px;
  color: var(--muted);
  text-align: center;
  font-size: 12px;
  line-height: 1.6;
}

.recall-card {
  width: min(100%, 760px);
  min-height: 510px;
  margin: 0 auto;
  overflow: hidden;
  border: 1px solid var(--line);
  border-radius: 24px;
  background: #fff;
  box-shadow: 0 17px 38px rgba(18, 53, 107, .10);
}
#review-prompt { text-align: center; }
.review-prompt-heading { padding: 22px 24px 0; }
.review-type-badge {
  display: inline-block;
  border-radius: 999px;
  background: var(--mint);
  padding: 6px 10px;
  color: var(--green-dark);
  font-size: 10px;
  font-weight: 850;
  letter-spacing: .06em;
}
.review-instruction {
  margin: 11px auto 0;
  color: var(--muted);
  font-size: 13px;
  line-height: 1.65;
}
.review-word {
  margin: 84px 24px 20px;
  color: var(--green-dark);
  font-family: Georgia, serif;
  font-size: clamp(45px, 7vw, 70px);
  line-height: 1.05;
  letter-spacing: -.035em;
  overflow-wrap: anywhere;
}
.review-context {
  width: min(100% - 48px, 610px);
  margin: 0 auto 28px;
  color: var(--ink);
  font-size: 17px;
  line-height: 1.75;
}
.review-context-large {
  margin-top: 25px;
  font-family: Georgia, serif;
  font-size: 22px;
}
.review-main-image {
  display: block;
  width: 100%;
  max-height: 315px;
  margin-top: 20px;
  background: var(--mint);
  object-fit: contain;
}
.review-definition-main {
  margin: 0;
  color: var(--ink);
  font-family: Georgia, serif;
  font-size: 21px;
  line-height: 1.55;
}
.review-definition-centered {
  width: min(100% - 48px, 620px);
  margin: 24px auto 5px;
}
.review-definition-zh {
  margin: 10px 0 0;
  color: var(--muted);
  font-size: 15px;
  line-height: 1.6;
}
.review-pos {
  margin: 0 0 8px;
  color: var(--green);
  font-size: 12px;
  font-weight: 800;
}
.recall-answer {
  width: min(100% - 48px, 620px);
  margin: 35px auto 0;
  border-radius: 17px;
  background: var(--mint);
  padding: 24px;
  text-align: left;
}
.audio-button {
  display: block;
  min-width: 180px;
  min-height: 64px;
  margin: 105px auto 40px;
  border: 0;
  border-radius: 999px;
  background: var(--lime);
  color: var(--green-dark);
  font-weight: 850;
}
.audio-button:hover { background: #ffda68; }

#review-options { padding: 0 24px; }
.review-option-grid {
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: 12px;
  margin-top: 22px;
}
.review-option-grid.is-three { grid-template-columns: 1fr; }
.review-option {
  position: relative;
  display: grid;
  grid-template-columns: auto 1fr;
  align-items: center;
  gap: 13px;
  min-height: 74px;
  border: 1px solid var(--line);
  border-radius: 15px;
  background: #f8fbfc;
  padding: 13px 15px;
  color: var(--ink);
  text-align: left;
  transition: border-color .15s, background .15s, transform .15s;
}
.review-option:hover { transform: translateY(-1px); border-color: var(--green); }
.review-option-grid.is-three .review-option { grid-template-columns: auto 80px 1fr; }
.review-option-letter {
  align-self: start;
  color: var(--green);
  font-weight: 900;
}
.review-option-image {
  width: 78px;
  height: 58px;
  border-radius: 9px;
  background: var(--mint);
  object-fit: contain;
}
.review-option-copy { font-size: 13px; line-height: 1.55; }
.review-option-word {
  font-family: Georgia, serif;
  font-size: 20px;
  font-weight: 750;
  overflow-wrap: anywhere;
}
.review-option.is-selected { border-color: var(--cyan); background: #eaf8fb; }
.review-option.is-correct { border-color: var(--cyan-dark); background: var(--mint); }
.review-option.is-wrong { border-color: #d98a82; background: #fff0ee; }
.review-option:disabled { cursor: default; transform: none; opacity: 1; }

.review-feedback {
  margin: 22px 24px 0;
  border-radius: 16px;
  padding: 18px 20px;
  text-align: left;
}
.review-feedback.is-correct { background: var(--mint); color: var(--navy); }
.review-feedback.is-wrong { background: #fff4e5; color: #70491a; }
.review-feedback strong { font-size: 16px; }
.review-feedback p { margin: 7px 0 0; font-size: 13px; line-height: 1.6; }
.review-feedback .feedback-answer { color: var(--ink); font-weight: 750; }
.review-controls {
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: 12px;
  padding: 24px;
}
.review-controls > :only-child { grid-column: 1 / -1; }
.review-reveal { width: min(100%, 330px); justify-self: center; }
.review-complete-icon {
  display: grid;
  place-items: center;
  width: 72px;
  height: 72px;
  margin: 90px auto 22px;
  border-radius: 50%;
  background: var(--lime);
  color: var(--green-dark);
  font-size: 34px;
  font-weight: 900;
}
.review-complete-title { margin: 0 24px; font-size: 28px; }
.review-complete-copy {
  width: min(100% - 48px, 520px);
  margin: 14px auto 25px;
  color: var(--muted);
  font-size: 14px;
  line-height: 1.7;
}

.coming-soon { margin: 20px 0; border: 1px dashed #c9c8bd; border-radius: 16px; padding: 19px; }
.coming-soon h3 { margin: 0 0 8px; font-size: 19px; }
.coming-soon p:last-child { margin: 0; color: var(--muted); font-size: 13px; line-height: 1.65; }

.intro h1 span { color: var(--cyan-dark); }
.eyebrow-dot { display: inline-block; width: 7px; height: 7px; margin-right: 7px; border-radius: 50%; background: var(--yellow); vertical-align: 1px; }
.writing-preview-link { max-width: 450px; display: flex; align-items: center; gap: 14px; margin-top: 38px; padding: 18px 0; border-top: 1px solid var(--line); color: var(--navy); text-decoration: none; }
.writing-preview-link small { display: block; margin-top: 6px; color: var(--muted); font-size: 12px; line-height: 1.7; }
.writing-preview-link strong { font-size: 14px; font-weight: 600; }
.preview-link-icon, .module-arrow { display: grid; place-items: center; width: 42px; height: 42px; flex-shrink: 0; border-radius: 12px; background: var(--mint); color: var(--cyan-dark); font-size: 22px; }
.writing-preview-link > :last-child { margin-left: auto; }
.writing-module { display: flex; justify-content: space-between; gap: 20px; border: 1px solid var(--line); border-radius: 20px; padding: 24px; background: white; color: var(--navy); text-decoration: none; }
.writing-module:hover { border-color: var(--teal); }
.writing-module .card-kicker { display: block; margin-bottom: 14px; color: var(--cyan-dark); }
.writing-module h3 { margin: 0 0 8px; font-size: 22px; font-weight: 650; }
.writing-module p { margin: 0 0 18px; color: var(--muted); font-size: 13px; line-height: 1.7; }
.module-meta { font-size: 12px; color: var(--muted); }

.podcast-module {
  display: flex;
  justify-content: space-between;
  gap: 20px;
  width: 100%;
  border: 1px solid #cbe7eb;
  border-radius: 20px;
  background: linear-gradient(125deg, #f3fcfd, #fffdf3);
  padding: 24px;
  color: var(--navy);
  text-align: left;
}
.podcast-module:hover { border-color: var(--cyan); }
.podcast-module .card-kicker { display: block; margin-bottom: 14px; color: var(--cyan-dark); }
.podcast-module h3 { margin: 0 0 8px; font-size: 22px; font-weight: 650; }
.podcast-module p { margin: 0 0 18px; color: var(--muted); font-size: 13px; line-height: 1.7; }

.sentence-course-module {
  display: flex;
  justify-content: space-between;
  gap: 20px;
  width: 100%;
  border: 1px solid #d7e2f0;
  border-radius: 20px;
  background: linear-gradient(125deg, #f5f9ff, #f2fbf8);
  padding: 24px;
  color: var(--navy);
  text-align: left;
}
.sentence-course-module:hover { border-color: var(--teal); }
.sentence-course-module .card-kicker { display: block; margin-bottom: 14px; color: var(--cyan-dark); }
.sentence-course-module h3 { margin: 0 0 8px; font-size: 22px; font-weight: 650; }
.sentence-course-module p { margin: 0 0 18px; color: var(--muted); font-size: 13px; line-height: 1.7; }

.podcast-view { margin-top: 28px; border-top: 1px solid var(--line); padding-top: 25px; }
.podcast-back { margin: 0 0 20px; }
.podcast-view-header { display: flex; align-items: flex-start; justify-content: space-between; gap: 18px; }
.podcast-view-header h2 { margin-bottom: 9px !important; }
.podcast-view-header p:last-child { max-width: 680px; margin: 0; color: var(--muted); font-size: 13px; line-height: 1.7; }
.podcast-toolbar { display: grid; grid-template-columns: minmax(0, 1fr) minmax(220px, .55fr); gap: 13px; margin: 25px 0 14px; }
.podcast-card-grid { display: grid; grid-template-columns: repeat(2, minmax(0, 1fr)); gap: 18px; }
.podcast-card { overflow: hidden; border: 1px solid var(--line); border-radius: 20px; background: #fff; box-shadow: 0 10px 28px rgba(18, 53, 107, .06); }
.podcast-cover { display: block; width: 100%; aspect-ratio: 16 / 9; background: var(--mint); object-fit: cover; }
.podcast-card-body { padding: 20px; }
.podcast-card-meta { display: flex; flex-wrap: wrap; gap: 7px; }
.podcast-subject, .podcast-free { border-radius: 999px; background: var(--mint); padding: 6px 9px; color: var(--navy); font-size: 10px; font-weight: 800; }
.podcast-free { background: #fff4c9; }
.podcast-title { min-height: 58px; margin: 13px 0 6px; color: var(--navy); font-size: 23px; line-height: 1.25; letter-spacing: -.02em; }
.podcast-summary { margin: 0 0 12px; color: var(--muted); font-size: 13px; line-height: 1.65; }
.podcast-progress-copy { margin: 14px 0 9px; color: var(--muted); font-size: 11px; font-weight: 700; }
.podcast-progress-copy.is-complete { color: var(--green); }
.podcast-audio { display: block; width: 100%; min-height: 44px; }
.podcast-actions { display: grid; grid-template-columns: minmax(0, 1fr) auto; align-items: center; gap: 10px; margin-top: 16px; }
.podcast-document-link { display: grid; place-items: center; min-height: 44px; padding: 9px 13px; text-decoration: none; font-size: 12px; }
.podcast-transcript-button { justify-self: end; min-height: 44px; }
.podcast-transcript-pending { color: var(--muted); font-size: 10px; font-weight: 700; }
.podcast-transcript-list { display: grid; gap: 7px; max-height: 340px; overflow-y: auto; margin-top: 16px; border-top: 1px solid var(--line); padding-top: 13px; }
.podcast-transcript-cue { display: grid; grid-template-columns: 62px 1fr; gap: 10px; width: 100%; border: 1px solid transparent; border-radius: 10px; background: #f7fafb; padding: 10px; color: var(--ink); text-align: left; }
.podcast-transcript-cue.is-active { border-color: var(--cyan); background: var(--mint); }
.cue-time { color: var(--green); font-size: 10px; font-weight: 800; }
.cue-copy { display: grid; gap: 5px; font-size: 12px; line-height: 1.55; }
.cue-copy small { color: var(--muted); font-size: 11px; }

.sentence-course-view { margin-top: 28px; border-top: 1px solid var(--line); padding-top: 25px; }
.sentence-course-back { margin: 0 0 20px; }
.sentence-course-view-header { display: flex; align-items: flex-start; justify-content: space-between; gap: 18px; }
.sentence-course-view-header h2 { margin-bottom: 9px !important; }
.sentence-course-view-header p:last-child { max-width: 720px; margin: 0; color: var(--muted); font-size: 13px; line-height: 1.7; }
.sentence-course-toolbar { display: grid; grid-template-columns: minmax(0, 1fr) 230px; gap: 13px; margin: 25px 0 14px; }
.sentence-course-tag-filter { display: flex; flex-wrap: wrap; align-items: center; gap: 9px 12px; margin: 0 0 14px; border: 0; padding: 0; }
.sentence-course-tag-filter legend { width: 100%; margin-bottom: 2px; color: var(--navy); font-size: 12px; font-weight: 750; }
.sentence-course-tag-options { display: flex; flex-wrap: wrap; gap: 7px; }
.sentence-course-tag-option, .sentence-course-match { border: 1px solid var(--line); border-radius: 999px; background: #fff; padding: 7px 10px; color: var(--muted); font-size: 10px; font-weight: 750; }
.sentence-course-tag-option.is-selected { border-color: var(--teal); background: var(--mint); color: var(--navy); }
.sentence-course-match { margin-left: auto; border-style: dashed; color: var(--cyan-dark); }
.sentence-course-match[aria-pressed="true"] { background: #eef5ff; }
.sentence-course-card-grid { display: grid; gap: 20px; }
.sentence-course-card {
  display: grid;
  grid-template-columns: minmax(210px, 260px) minmax(0, 1fr);
  overflow: hidden;
  border: 1px solid var(--line);
  border-radius: 22px;
  background: #fff;
  box-shadow: 0 12px 32px rgba(18, 53, 107, .06);
}
.sentence-course-cover { display: block; width: 100%; height: 100%; min-height: 460px; background: var(--mint); object-fit: cover; }
.sentence-course-card-body { display: grid; grid-template-columns: minmax(0, 1fr) minmax(250px, 310px); align-content: start; gap: 0 24px; padding: 24px; }
.sentence-course-card-body > :not(.sentence-course-media) { grid-column: 1; }
.sentence-course-meta { display: flex; flex-wrap: wrap; gap: 7px; }
.sentence-course-number, .sentence-course-stars, .sentence-course-topic, .sentence-course-free {
  border-radius: 999px;
  background: var(--mint);
  padding: 6px 9px;
  color: var(--navy);
  font-size: 10px;
  font-weight: 800;
}
.sentence-course-stars { background: #fff4c9; color: #775706; }
.sentence-course-topic { background: #eef5ff; }
.sentence-course-free { background: #e7f8ee; color: #17653a; }
.sentence-course-title { margin: 14px 0 9px; color: var(--navy); font-size: 24px; line-height: 1.25; letter-spacing: -.02em; }
.sentence-course-copy { margin: 0; color: var(--ink); font-family: Georgia, "Times New Roman", serif; font-size: 16px; line-height: 1.75; }
.sentence-course-tags, .sentence-course-loads { display: flex; flex-wrap: wrap; gap: 7px; margin-top: 15px; }
.sentence-course-tag { border: 1px solid #cde5e4; border-radius: 999px; padding: 6px 9px; color: var(--cyan-dark); font-size: 10px; font-weight: 750; }
.sentence-course-loads span { border-left: 2px solid var(--yellow); padding-left: 7px; color: var(--muted); font-size: 10px; font-weight: 700; }
.sentence-course-challenges { margin-top: 17px; border-top: 1px solid var(--line); border-bottom: 1px solid var(--line); padding: 13px 0; }
.sentence-course-challenges summary { color: var(--navy); font-size: 12px; font-weight: 800; cursor: pointer; }
.sentence-course-challenges ul { display: grid; gap: 10px; margin: 13px 0 2px; padding-left: 18px; }
.sentence-course-challenges li { color: var(--muted); font-size: 11px; line-height: 1.6; }
.sentence-course-challenges li strong, .sentence-course-challenges li span { display: block; }
.sentence-course-challenges li strong { color: var(--ink); }
.sentence-course-media { grid-column: 2; grid-row: 1 / span 8; width: 100%; max-width: 310px; justify-self: center; }
.sentence-course-progress { margin: 0 0 9px; color: var(--muted); font-size: 11px; font-weight: 700; }
.sentence-course-progress.is-complete { color: var(--green); }
.sentence-course-video { display: block; width: 100%; aspect-ratio: 9 / 16; border-radius: 14px; background: #091324; object-fit: contain; }
.sentence-course-actions { display: grid; grid-template-columns: 1fr; gap: 9px; margin-top: 18px; }
.sentence-course-handout { display: grid; place-items: center; min-height: 44px; padding: 9px 13px; text-decoration: none; font-size: 12px; }
.sentence-course-handout-pending { border-radius: 11px; background: #f4f6f8; padding: 12px; color: var(--muted); font-size: 11px; text-align: center; }
.sentence-course-qa { margin-top: 12px; border: 1px solid #cde5e4; border-radius: 13px; background: #f7fcfb; }
.sentence-course-qa > summary { padding: 12px 13px; color: var(--navy); font-size: 12px; font-weight: 800; cursor: pointer; }
.sentence-course-qa-panel { display: grid; gap: 11px; border-top: 1px solid #dbecea; padding: 13px; }
.sentence-course-qa-state, .sentence-course-qa-empty { margin: 0; color: var(--muted); font-size: 10px; line-height: 1.6; }
.sentence-course-qa-state.is-error, .sentence-course-qa-empty.is-error { color: #a62b2b; }
.sentence-course-qa-form { display: grid; gap: 8px; }
.sentence-course-qa-input { width: 100%; min-height: 82px; resize: vertical; border: 1px solid var(--line); border-radius: 10px; background: #fff; padding: 10px; color: var(--ink); font: inherit; font-size: 12px; line-height: 1.55; }
.sentence-course-qa-input:focus { outline: 2px solid rgba(31, 181, 174, .22); border-color: var(--teal); }
.sentence-course-qa-controls { display: flex; align-items: center; justify-content: space-between; gap: 9px; }
.sentence-course-qa-remaining { color: var(--muted); font-size: 10px; }
.sentence-course-qa-submit { min-height: 36px; padding: 7px 11px; font-size: 11px; }
.sentence-course-qa-list { display: grid; gap: 9px; max-height: 420px; overflow-y: auto; }
.sentence-course-qa-item { border: 1px solid var(--line); border-radius: 11px; background: #fff; padding: 11px; }
.sentence-course-qa-question { margin: 0; color: var(--navy); font-size: 11px; font-weight: 750; line-height: 1.55; }
.sentence-course-qa-item-meta { margin: 5px 0 0; color: var(--muted); font-size: 9px; }
.sentence-course-qa-answer { margin-top: 10px; border-left: 3px solid var(--teal); padding-left: 9px; color: var(--ink); font-size: 11px; line-height: 1.65; white-space: pre-wrap; }
.sentence-course-qa-evidence { margin-top: 9px; color: var(--muted); font-size: 9px; }
.sentence-course-qa-evidence summary { cursor: pointer; font-weight: 750; }
.sentence-course-qa-evidence ul { display: grid; gap: 5px; margin: 7px 0 0; padding-left: 16px; line-height: 1.5; }

[hidden] { display: none !important; }

@media (max-width: 820px) {
  .page-shell { grid-template-columns: 1fr; gap: 38px; padding-top: 28px; }
  .intro { text-align: center; margin: 0 auto; }
  .intro-copy { margin-inline: auto; }
  .promise-list { justify-content: center; }
  .account-card { width: min(100%, 500px); margin: 0 auto; }
  .is-authenticated .account-card { width: 100%; max-width: none; }
  .writing-preview-link { margin-inline: auto; text-align: left; }
  .dashboard-grid { grid-template-columns: 1fr; }
  .word-card-grid { grid-template-columns: 1fr; }
  .podcast-card-grid { grid-template-columns: 1fr; }
  .sentence-course-card { grid-template-columns: minmax(170px, 220px) minmax(0, 1fr); }
  .sentence-course-card-body { grid-template-columns: 1fr; }
  .sentence-course-card-body > :not(.sentence-course-media), .sentence-course-media { grid-column: 1; }
  .sentence-course-media { grid-row: auto; margin-top: 18px; }
}

@media (max-width: 520px) {
  .page-shell { width: min(100% - 40px, 1120px); }
  .page-shell { padding: 24px 0 52px; gap: 30px; }
  .intro h1 { font-size: 34px; }
  .intro-copy { margin: 19px 0; font-size: 15px; }
  .promise-list span { font-size: 11px; }
  .account-card { min-height: 510px; border-radius: 22px; padding: 23px 19px; }
  .is-authenticated .page-shell { width: min(100% - 28px, 1040px); }
  .is-authenticated .account-card { min-height: 0; }
  .library-list { grid-template-columns: 1fr; }
  .library-toolbar { grid-template-columns: 1fr; }
  .podcast-toolbar { grid-template-columns: 1fr; }
  .sentence-course-toolbar { grid-template-columns: 1fr; }
  .sentence-course-tag-filter { display: grid; }
  .sentence-course-match { margin-left: 0; justify-self: start; }
  .library-view-header, .podcast-view-header, .sentence-course-view-header, .library-results-meta { display: grid; }
  .preview-badge { justify-self: start; }
  .podcast-title { min-height: 0; font-size: 21px; }
  .podcast-actions { grid-template-columns: 1fr; }
  .podcast-transcript-button, .podcast-transcript-pending { justify-self: start; }
  .sentence-course-card { grid-template-columns: 1fr; }
  .sentence-course-cover { height: auto; min-height: 0; aspect-ratio: 3 / 4; }
  .sentence-course-card-body { padding: 20px; }
  .sentence-course-title { font-size: 21px; }
  .review-header { grid-template-columns: 1fr auto; }
  .review-header > div:nth-child(2) { grid-column: 1 / -1; grid-row: 1; }
  .review-exit { grid-column: 1; grid-row: 2; }
  .review-progress { grid-column: 2; grid-row: 2; }
  .recall-card { min-height: 480px; border-radius: 20px; }
  .review-word { margin-top: 65px; }
  .review-main-image { max-height: 245px; }
  .review-option-grid, .review-option-grid.is-three { grid-template-columns: 1fr; }
  .review-option { min-height: 68px; }
  .review-controls { padding: 19px; }
}

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