/* DS V1.1 learning screens. Native layouts for desktop, tablet and phone. */
.ds-app :is(.ds-topics, .ds-quick-test, .ds-exam, .ds-rules, .ds-videos, .ds-scenarios, .ds-progress, .ds-ai, .ds-lesson) {
  display: block;
  min-width: 0;
  --ds-learning-blue: var(--ds-blue, #007aff);
  --ds-learning-ink: var(--ds-ink);
  --ds-learning-muted: var(--ds-muted);
  --ds-learning-line: var(--ds-line);
}
.ds-app :is(.ds-topics-intro, .ds-question-grid, .ds-video-layout, .ds-workspace, .ds-progress-overview) > * { min-width: 0; }
.ds-app :is(.ds-topic-card, .ds-rule-card, .ds-video-card, .ds-scene-card, .ds-ai-prompts .ds-card) h2,
.ds-app :is(.ds-ai-prompts, .ds-recommendation-row) h3 {
  margin: 0;
  font-size: 20px;
  line-height: 1.25;
  overflow-wrap: normal;
  text-wrap: balance;
}
.ds-app :is(.ds-card-body, .ds-banner-copy, .ds-answer, .ds-readiness, .ds-metric-card, .ds-recommendation-row) p {
  margin: 8px 0 0;
  font-size: 15px;
  line-height: 1.45;
}
.ds-app :is(.ds-progress-caption, .ds-media-state, .ds-search-status, .ds-answer small, .ds-card-body small, .ds-scene-card small, .ds-readiness-ring span) {
  font-size: 14px;
  line-height: 1.4;
}
.ds-app :is(.ds-topic-art, .ds-banner-art, .ds-test-head-art, .ds-question-art, .ds-rules-art, .ds-rule-art, .ds-featured-video-art, .ds-video-thumb, .ds-scene-hero-art, .ds-scene-art, .ds-prompt-art, .ds-recommendation-art, .ds-lesson-art, .ds-ai-hero-art) {
  display: block;
  max-width: 100%;
  object-fit: contain;
  object-position: center;
  filter: none;
}
.ds-app .ds-button.is-compact { min-height: 44px; padding: 10px 16px; font-size: 14px; }
.ds-app .ds-button.is-wide { width: 100%; }
.ds-app .ds-card-actions { display: flex; align-items: center; flex-wrap: wrap; gap: 12px; }
.ds-app .ds-card-actions .ds-button { white-space: normal; }
.ds-app :is(.ds-rules, .ds-progress) > .ds-card-actions { margin-top: 24px; }
.ds-app .ds-section-head { display: flex; align-items: center; justify-content: space-between; gap: 16px; }
.ds-app .ds-section-head > :first-child { min-width: 0; }
.ds-app .ds-section-head h2 { margin: 0; }
.ds-app .ds-section-head > :is(.ds-icon-button, .ds-button) { flex-shrink: 0; }
.ds-app .ds-back { display: inline-flex; align-items: center; min-height: 44px; margin-bottom: 8px; color: #42648e; font-size: 15px; }
.ds-app .ds-info-pill { display: inline-flex; align-items: center; gap: 12px; padding: 12px 16px; border-radius: 14px; background: #edf4fd; color: #46628a; font-size: 14px; line-height: 1.4; }
.ds-app .ds-info-pill > svg { width: 24px; height: 24px; flex: 0 0 24px; }
.ds-app .ds-tag { display: inline-flex; width: fit-content; max-width: 100%; align-items: center; border-radius: 8px; padding: 5px 9px; background: #edf4ff; color: #36618e; font-size: 14px; line-height: 1.35; white-space: normal; }
.ds-app .ds-toolbar.ds-search { display: flex; gap: 8px; width: 100%; min-height: 52px; margin: 22px 0 14px; padding: 4px 6px 4px 16px; }
.ds-app .ds-toolbar.ds-search label { display: flex; flex: 1 1 auto; align-items: center; gap: 12px; min-width: 0; margin: 0; }
.ds-app .ds-toolbar.ds-search label > svg { width: 24px; height: 24px; flex: 0 0 24px; }
.ds-app .ds-toolbar.ds-search input { flex: 1 1 auto; width: 100%; min-width: 0; min-height: 44px; padding: 8px 0; border: 0; background: transparent; box-shadow: none; font-size: 16px; }
.ds-app .ds-toolbar.ds-search > .ds-icon-button { flex: 0 0 44px; min-width: 44px; min-height: 44px; }
.ds-app :is(.ds-topics, .ds-videos, .ds-scenarios, .ds-rules) .ds-chips { display: flex; flex-wrap: wrap; gap: 8px; margin: 14px 0; }
.ds-app :is(.ds-topics, .ds-videos, .ds-scenarios, .ds-rules) .ds-chip { min-width: 44px; min-height: 44px; padding: 10px 16px; font-size: 14px; line-height: 1.35; white-space: normal; }
.ds-app .ds-search-status { margin-top: 12px; color: var(--ds-learning-muted); }
.ds-app [data-ds-search-status]:empty { display:none; }
.ds-app .ds-progress-caption { display: flex; justify-content: space-between; align-items: flex-end; gap: 12px; margin: 16px 0 8px; color: var(--ds-learning-muted); }
.ds-app .ds-progress-caption strong { color: #4776af; flex-shrink: 0; font-weight: 600; }
.ds-app :is(.ds-topic-card, .ds-signs-banner, .ds-test-status, .ds-lesson-outline) progress {
  appearance: none;
  display: block;
  width: 100%;
  height: 7px;
  margin: 0;
  border: 0;
  border-radius: 10px;
  overflow: hidden;
  color: var(--ds-learning-blue);
  background: #e5edf8;
}
.ds-app progress::-webkit-progress-bar { background: #e5edf8; border-radius: 10px; }
.ds-app progress::-webkit-progress-value { background: #007aff; border-radius: 10px; }
.ds-app progress::-moz-progress-bar { background: #007aff; border-radius: 10px; }

/* Topics: four cards across on PC; each card remains a single real link. */
.ds-app .ds-topics-intro { grid-template-columns: minmax(0, 1fr) minmax(0, 1.08fr); align-items: stretch; margin-bottom: 24px; gap: 28px; }
.ds-app .ds-topics-intro > .ds-page-head { display: block; padding: 10px 0 0; margin: 0; }
.ds-app .ds-topics-intro h1 { margin-bottom: 8px; }
.ds-app .ds-signs-banner { display: grid; grid-template-columns: minmax(0, 1.15fr) minmax(0, 1fr); gap: 14px; align-items: center; padding: 24px; background: linear-gradient(115deg, #eaf3ff, #e2edff); border-radius: 20px; }
.ds-app .ds-signs-banner h2 { margin: 12px 0 0; font-size: clamp(24px, 2.2vw, 32px); line-height: 1.15; }
.ds-app .ds-signs-banner .ds-banner-copy { min-width: 0; }
.ds-app .ds-signs-banner .ds-banner-art { width: 100%; max-height: 230px; }
.ds-app .ds-signs-banner .ds-button { margin-top: 18px; }
.ds-app .ds-topic-grid { grid-template-columns: repeat(4, minmax(0, 1fr)); align-items: stretch; }
.ds-app .ds-topic-card { display: flex; flex-direction: column; padding: 18px; position: relative; }
.ds-app .ds-topic-card .ds-card-link { position: relative; display: flex; flex: 1; flex-direction: column; min-width: 0; color: inherit; text-decoration: none; }
.ds-app .ds-topic-card .ds-card-link:focus-visible { outline: 3px solid #176bf1; outline-offset: 6px; border-radius: 8px; }
.ds-app .ds-topic-art { width: 100%; height: 124px; margin: 0 auto 14px; object-position: left center; }
.ds-app .ds-card-arrow { position: absolute; top: 0; right: 0; display: grid; place-items: center; width: 44px; height: 44px; border-radius: 50%; background: #e9f4ff; color: var(--ds-blue); pointer-events: none; }
.ds-app .ds-card-arrow svg { width: 24px; height: 24px; }
.ds-app .ds-topic-card .ds-progress-caption { margin-top: 20px; }

/* Test and exam structures retain an honest empty state and full answer rows. */
.ds-app :is(.ds-quick-test, .ds-exam) { max-width: 1280px; margin-inline: auto; }
.ds-app .ds-test-head { display: flex; justify-content: space-between; align-items: center; gap: 24px; margin-bottom: 22px; }
.ds-app .ds-test-head > div { min-width: 0; }
.ds-app .ds-test-head-art { width: 110px; height: 110px; flex: 0 0 110px; }
.ds-app .ds-test-facts { display: grid; grid-template-columns: repeat(3, minmax(0, 1fr)); gap: 18px; margin: 0 0 18px; padding: 18px 24px; }
.ds-app .ds-test-facts > div { display: grid; grid-template-columns: 32px minmax(0, 1fr); column-gap: 12px; align-content: start; }
.ds-app .ds-test-facts svg { grid-row: 1 / 3; width: 28px; height: 28px; color: #5484be; align-self: center; }
.ds-app .ds-test-facts dt { font-size: 14px; color: var(--ds-learning-muted); }
.ds-app .ds-test-facts dd { margin: 3px 0 0; font-size: 17px; font-weight: 600; }
.ds-app .ds-test-status { display: grid; grid-template-columns: auto minmax(100px, 1fr) auto; align-items: center; gap: 24px; padding: 18px 24px; margin-bottom: 18px; }
.ds-app .ds-test-status strong { font-size: 16px; }
.ds-app .ds-test-status > span { display: flex; gap: 8px; align-items: center; font-size: 15px; color: #426386; }
.ds-app .ds-test-status svg { width: 24px; height: 24px; }
.ds-app .ds-question-panel > .ds-section-head { margin-bottom: 16px; }
.ds-app .ds-question-panel > .ds-section-head h2 { font-size: 25px; line-height: 1.3; }
.ds-app .ds-notice { margin: 0 0 20px; padding: 14px 16px; border-radius: 12px; background: #f0f5fc; color: #4b6587; font-size: 14px; line-height: 1.5; }
.ds-app .ds-question-grid { grid-template-columns: minmax(0, 1.15fr) minmax(0, 1fr); align-items: stretch; gap: 24px; }
.ds-app .ds-question-art { width: 100%; height: 100%; min-height: 270px; max-height: 450px; border-radius: 16px; background: #edf3fa; }
.ds-app .ds-answer-list { display: grid; align-content: start; gap: 12px; min-width: 0; margin: 0; padding: 0; border: 0; opacity: 1; }
.ds-app .ds-answer { display: flex; align-items: center; gap: 12px; min-height: 64px; padding: 12px 16px; border: 1px solid #dfe7f3; border-radius: 12px; background: #fbfcff; color: var(--ds-ink); font-size: 16px; line-height: 1.4; opacity: 1; cursor: default; }
.ds-app .ds-answer input[type="radio"] { flex: 0 0 24px; width: 24px; height: 24px; min-height: 24px; margin: 0; accent-color: #809abb; opacity: 1; }
.ds-app .ds-answer span { min-width: 0; }
.ds-app .ds-answer.is-reference-selected { border-color:#0086ff; background:#e8f4ff; box-shadow:0 0 0 1px #0086ff; }
.ds-app .ds-answer.is-reference-selected input[type="radio"] { accent-color:var(--mauto-ds-color-primary,#3c78da); }
.ds-app .ds-answer small { display: block; margin-top: 4px; color: #697a90; }
.ds-app .ds-notice-warm { display: flex; align-items: flex-start; gap: 14px; margin: 22px 0 0; color: #74603c; background: #fff7e8; }
.ds-app .ds-notice-warm > svg { flex: 0 0 24px; width: 24px; height: 24px; }
.ds-app .ds-notice-warm p { margin: 5px 0 0; font-size: 14px; line-height: 1.5; }
.ds-app .ds-test-actions { display: grid; grid-template-columns: minmax(0,1.4fr) minmax(0,1fr); margin-top: 20px; }
.ds-app .ds-test-actions .ds-button { width: 100%; min-height: 48px; }

/* Rules: book illustration and independently wrapping section summaries. */
.ds-app .ds-rules-head { grid-template-columns: minmax(0, 1.4fr) minmax(0, 1fr); align-items: center; gap: 32px; margin-bottom: 22px; }
.ds-app .ds-rules-head h1 { margin: 0 0 10px; }
.ds-app .ds-rules-head h2 { margin: 0 0 10px; }
.ds-app .ds-rules-head p { max-width: 620px; margin: 0 0 16px; font-size: 17px; line-height: 1.5; }
.ds-app .ds-rules-art { width: min(100%, 320px); height: 280px; justify-self: center; }
.ds-app .ds-rules > .ds-toolbar { margin-top: 0; }
.ds-app .ds-rules > .ds-muted { margin: 0 0 20px; font-size: 14px; line-height: 1.5; }
.ds-app .ds-rules-grid { grid-template-columns: repeat(2, minmax(0, 1fr)); }
.ds-app .ds-rule-card { display: grid; grid-template-columns: 90px minmax(0, 1fr) auto; gap: 18px; align-items: center; padding: 20px; }
.ds-app .ds-rule-art { width: 90px; height: 100px; }
.ds-app .ds-rule-card .ds-card-body { min-width: 0; }
.ds-app .ds-rule-card .ds-card-body small { display: block; margin-top: 8px; color: #718097; }
.ds-app .ds-rule-card .ds-button { padding-inline: 12px; }

/* Media illustrations stay contained; playback controls describe availability. */
.ds-app :is(.ds-videos, .ds-scenarios) > .ds-page-head { margin-bottom: 24px; }
.ds-app .ds-video-layout { grid-template-columns: minmax(0, 1.1fr) minmax(0, 1fr); gap: 24px; align-items: start; }
.ds-app .ds-video-feature-column { display: flex; flex-direction: column; min-width: 0; gap: 20px; }
.ds-app .ds-media { position: relative; min-width: 0; border-radius: 16px; overflow: hidden; background: #e7eef7; }
.ds-app .ds-featured-video { border-radius: 20px; background: #182b43; }
.ds-app .ds-featured-video-art { width: 100%; height: 340px; background: #e6edf5; object-fit:cover; }
.ds-app .ds-media-overlay { position:absolute; inset:auto 0 0; background:linear-gradient(0deg,#061532e8,#0615329c 65%,transparent); display: grid; grid-template-columns: auto minmax(0, 1fr); align-items: center; column-gap: 16px; padding: 22px; color: #fff; }
.ds-app .ds-media-overlay .ds-play-button { grid-row: 1 / 4; }
.ds-app .ds-media-overlay h2 { margin: 0; color: inherit; font-size: 28px; line-height: 1.2; }
.ds-app .ds-media-overlay p { margin: 8px 0 0; font-size: 16px; color: #d6e4f8; }
.ds-app .ds-media-state { display: block; margin-top: 10px; color: #cbd8ea; }
.ds-app .ds-play-button { display: inline-flex; align-items: center; justify-content: center; flex: 0 0 64px; width: 64px; height: 64px; min-width: 44px; min-height: 44px; padding: 0 0 0 3px; border: 1px solid #d2e2f9; border-radius: 50%; background: #f7fbff; color:var(--mauto-ds-color-primary,#3c78da); font: inherit; font-size: 24px; cursor: pointer; box-shadow:var(--mauto-ds-action-depth); }
.ds-app .ds-play-button:focus-visible { outline: 3px solid #1670ff; outline-offset: 4px; }
.ds-app .ds-play-button.is-small { width: 44px; height: 44px; flex-basis: 44px; font-size: 18px; }
.ds-app .ds-video-feature-column > .ds-chips { margin: 0; }
.ds-app .ds-video-banner { display: grid; grid-template-columns: minmax(0, 1.5fr) minmax(100px, 1fr); align-items: center; gap: 16px; padding: 24px; border-radius: 20px; background: #dcecff; }
.ds-app .ds-video-banner h2 { margin: 0; font-size: 24px; }
.ds-app .ds-video-banner p { margin: 10px 0 16px; font-size: 15px; line-height: 1.45; }
.ds-app .ds-video-banner .ds-banner-art { width: 100%; max-height: 190px; }
.ds-app .ds-video-list { display: grid; gap: 14px; min-width: 0; }
.ds-app .ds-video-card { position: relative; display: grid; grid-template-columns: minmax(120px, .82fr) minmax(0, 1.2fr); gap: 16px; align-items: center; padding: 14px; overflow: visible; }
.ds-app .ds-video-card > .ds-media { min-height: 96px; display: grid; align-items: center; }
.ds-app .ds-video-thumb { width: 100%; height: 96px; }
.ds-app .ds-video-card .ds-play-button { position: absolute; left: 12px; bottom: 10px; }
.ds-app .ds-video-card .ds-card-body { min-width: 0; padding-right: 30px; }
.ds-app .ds-video-card h2 { font-size: 18px; }
.ds-app .ds-video-card h2 a { color: inherit; text-decoration: none; }
.ds-app .ds-video-card p { margin-top: 6px; font-size: 14px; }
.ds-app .ds-video-card small { display: block; margin-top: 8px; color: #6b7e96; }
.ds-app .ds-video-card .ds-tag { margin-top: 8px; }
.ds-app .ds-card-menu { position: absolute; top: 8px; right: 8px; z-index: 2; }
.ds-app .ds-card-menu[open] { z-index: 5; }
.ds-app .ds-card-menu summary { display: flex; align-items: center; justify-content: center; list-style: none; width: 44px; height: 44px; border-radius: 10px; background: #f4f8fddd; font-size: 24px; line-height: 1; cursor: pointer; }
.ds-app .ds-card-menu summary::-webkit-details-marker { display: none; }
.ds-app .ds-menu-items { position: absolute; right: 0; top: 48px; min-width: 180px; padding: 6px; border: 1px solid #dce7f4; border-radius: 12px; background: #fff; box-shadow: 0 8px 28px #27436620; }
.ds-app .ds-menu-items button { display: block; width: 100%; min-height: 44px; padding: 10px 12px; border: 0; border-radius: 8px; background: transparent; color: #284a75; font: inherit; font-size: 15px; text-align: left; cursor: pointer; }
.ds-app .ds-menu-items button:hover { background: #edf4ff; }

/* Scenarios use separate copy and image regions, preserving the original CGI. */
.ds-app .ds-scene-hero { display: block; position:relative; isolation:isolate; min-height:310px; padding: 0; border-radius: 20px; overflow: hidden; background: #1e344e; color: #fff; }
.ds-app .ds-scene-hero .ds-banner-copy { position:relative; z-index:1; min-width:0; width:52%; padding:32px; }
.ds-app .ds-scene-hero::after { content:""; position:absolute; inset:0; z-index:0; background:linear-gradient(90deg,#182b43f5,#182b43e8 38%,#182b4360 70%,transparent); pointer-events:none; }
.ds-app .ds-scene-hero-art { position:absolute; right:0; bottom:0; z-index:-1; width:78%; height:100%; max-height:none; min-height:0; object-fit:cover; object-position:right center; }
.ds-app .ds-scene-hero h2 { margin: 14px 0 12px; font-size: clamp(26px, 3vw, 42px); line-height: 1.15; color: #fff; }
.ds-app .ds-scene-hero p { color: #d4e0ef; max-width: 430px; }
.ds-app .ds-scene-hero .ds-button { margin-top: 20px; }
.ds-app .ds-scenarios > .ds-chips { margin-block: 22px; }
.ds-app .ds-scene-grid { grid-template-columns: repeat(4, minmax(0, 1fr)); align-items: stretch; }
.ds-app .ds-scene-card { display: flex; flex-direction: column; min-width: 0; position: relative; padding: 14px; }
.ds-app .ds-scene-art { width: 100%; height: 145px; margin-bottom: 16px; border-radius: 12px; background: #e7eef7; }
.ds-app .ds-scene-card h2 { font-size: 20px; }
.ds-app .ds-scene-card .ds-tag { margin-top: 10px; }
.ds-app .ds-scene-card .ds-card-actions { justify-content: space-between; gap: 8px; margin-top: auto; padding-top: 20px; }
.ds-app .ds-scene-card .ds-card-actions small { color: #6c7e96; }

/* Account readiness is empty; reference mode supplies the approved sample separately. */
.ds-app .ds-progress > .ds-page-head { margin-bottom: 24px; }
.ds-app .ds-progress-overview { display: grid; grid-template-columns: minmax(0, 2.8fr) repeat(3, minmax(0, 1fr)); gap: 16px; align-items: stretch; margin-bottom: 24px; }
.ds-app .ds-readiness { display: grid; grid-template-columns: 160px minmax(0, 1fr); gap: 20px; align-items: center; }
.ds-app .ds-readiness-ring { position: relative; display: flex; flex-direction: column; justify-content: center; align-items: center; width: 160px; height: 160px; color:var(--mauto-ds-color-primary,#3c78da); }
.ds-app .ds-readiness-ring svg { position: absolute; inset: 0; width: 100%; height: 100%; }
.ds-app .ds-readiness-ring strong { font-size: 40px; line-height: 1.2; color: #173c70; }
.ds-app .ds-readiness-ring span { margin-top: 4px; color: #677e9d; }
.ds-app .ds-readiness h2 { margin: 0; font-size: 24px; }
.ds-app .ds-readiness .ds-info-pill { margin-top: 16px; padding: 10px 12px; }
.ds-app .ds-metric-card { display: flex; flex-direction: column; align-items: flex-start; padding: 20px 16px; }
.ds-app .ds-metric-card > svg { width: 30px; height: 30px; margin-bottom: 14px; color: #5684bc; }
.ds-app .ds-metric-card h2 { margin: 0; font-size: 16px; line-height: 1.35; }
.ds-app .ds-metric-card > strong { margin-top: 14px; font-size: 36px; line-height: 1.1; }
.ds-app .ds-metric-card p { margin-bottom: 12px; font-size: 14px; }
.ds-app .ds-metric-card .ds-text-link { display: inline-flex; min-height: 44px; align-items: center; margin-top: auto; font-size: 14px; }
.ds-app .ds-progress-details { grid-template-columns: repeat(2, minmax(0, 1fr)); }
.ds-app .ds-progress-details .ds-section-head { align-items: flex-start; }
.ds-app .ds-progress-details .ds-section-head p { margin: 8px 0 0; font-size: 14px; line-height: 1.5; }
.ds-app .ds-progress-details .ds-text-link { display: inline-flex; flex-shrink: 0; align-items: center; min-height: 44px; font-size: 14px; }
.ds-app .ds-progress-details .ds-empty { display: flex; flex-direction: column; align-items: center; justify-content: center; min-height: 190px; padding: 28px 20px; margin-top: 18px; border-radius: 14px; background: #f5f8fd; text-align: center; }
.ds-app .ds-progress-details .ds-empty > svg { width: 36px; height: 36px; margin-bottom: 14px; color: #7b9ac2; }
.ds-app .ds-progress-details .ds-empty h3 { margin: 0; font-size: 18px; }
.ds-app .ds-progress-details .ds-empty p { max-width: 400px; margin: 8px 0 0; font-size: 14px; line-height: 1.5; }

/* AI layout also accommodates the explicitly gated approved conversation fixture. */
.ds-app .ds-ai-hero { display: grid; grid-template-columns: minmax(0, 1.4fr) minmax(0, 1fr); gap: 32px; align-items: center; padding: 0; margin-bottom: 24px; border: 0; background: transparent; }
.ds-app .ds-ai-hero--without-art { grid-template-columns: minmax(0, 1fr); }
.ds-app .ds-ai-hero h1 { margin: 0 0 8px; }
.ds-app .ds-ai-hero .ds-lead { margin: 0 0 20px; font-size: 23px; color: #526e91; }
.ds-app .ds-ai-hero .ds-panel h2 { margin: 0; }
.ds-app .ds-ai-hero .ds-panel p { margin-top: 8px; }
.ds-app .ds-ai-hero-art { width: 100%; max-height: 360px; }
.ds-app .ds-feature-list { display: flex; flex-wrap: wrap; gap: 12px 24px; padding: 0; margin: 18px 0; list-style: none; }
.ds-app .ds-feature-list li { display: flex; align-items: center; gap: 10px; font-size: 15px; line-height: 1.4; }
.ds-app .ds-feature-list svg { flex: 0 0 24px; width: 24px; height: 24px; color:var(--mauto-ds-color-primary,#3c78da); }
.ds-app .ds-ai-workspace { display: grid; grid-template-columns: minmax(0, 1.6fr) minmax(0, 1fr); align-items: start; gap: 24px; }
.ds-app .ds-ai-conversation { display: flex; flex-direction: column; gap: 22px; }
.ds-app .ds-ai-empty { display: grid; grid-template-columns: 64px minmax(0, 1fr); align-items: start; gap: 14px; }
.ds-app .ds-ai-avatar { width: 64px; height: 64px; overflow: hidden; border-radius: 50%; }
.ds-app .ds-ai-avatar img { width: 100%; height: 100%; object-fit: contain; }
.ds-app .ds-ai-empty .ds-panel { border-top-left-radius: 6px; }
.ds-app .ds-ai-empty h2 { margin: 0; font-size: 21px; }
.ds-app .ds-ai-empty p { margin: 10px 0 0; font-size: 15px; line-height: 1.5; }
.ds-app .ds-ai-prompts { grid-template-columns: repeat(3, minmax(0, 1fr)); }
.ds-app .ds-ai-prompts .ds-card { display: flex; flex-direction: column; align-items: flex-start; padding: 18px; min-width: 0; }
.ds-app .ds-prompt-art { width: 100%; height: 96px; margin-bottom: 12px; object-position: left center; }
.ds-app .ds-ai-prompts h3 { font-size: 17px; margin-bottom: 16px; }
.ds-app .ds-ai-prompts .ds-button { margin-top: auto; max-width: 100%; }
.ds-app .ds-ai-recommendations .ds-section-head { flex-wrap: wrap; gap: 8px; }
.ds-app .ds-ai-recommendations h2 { font-size: 21px; }
.ds-app .ds-ai-recommendations .ds-text-link { display: inline-flex; align-items: center; min-height: 44px; font-size: 14px; }
.ds-app .ds-ai-recommendations > p { margin: 10px 0 4px; font-size: 14px; line-height: 1.5; color: var(--ds-learning-muted); }
.ds-app .ds-recommendation-row { display: grid; grid-template-columns: 62px minmax(0, 1fr); gap: 12px; align-items: center; padding: 16px 0; }
.ds-app .ds-recommendation-row + .ds-recommendation-row { border-top: 1px solid var(--ds-learning-line); }
.ds-app .ds-recommendation-art { grid-row: span 2; width: 62px; height: 76px; }
.ds-app .ds-recommendation-row h3 { font-size: 17px; }
.ds-app .ds-recommendation-row p { margin-top: 5px; font-size: 14px; }
.ds-app .ds-recommendation-row .ds-button { grid-column: 2; justify-self: start; }
.ds-app .ds-ai-composer { display: grid; grid-template-columns: auto minmax(0, 1fr) auto; align-items: center; gap: 12px; margin-top: 24px; padding: 16px; border: 1px solid #dce6f4; border-radius: 20px; background: #fff; }
.ds-app .ds-ai-composer textarea { display: block; width: 100%; min-width: 0; min-height: 60px; padding: 12px; resize: vertical; border: 1px solid #dce5f2; border-radius: 12px; color: #5e718d; background: #f6f8fc; font: inherit; font-size: 16px; line-height: 1.45; opacity: 1; -webkit-text-fill-color: #5e718d; }
.ds-app .ds-ai-composer > .ds-muted { grid-column: 1 / -1; margin: 0; font-size: 14px; line-height: 1.45; }

/* Lesson detail uses the same real navigation and explicit media availability. */
.ds-app .ds-lesson > .ds-page-head { display: block; margin-bottom: 24px; }
.ds-app .ds-lesson > .ds-page-head .ds-tag { margin-bottom: 14px; }
.ds-app .ds-lesson-workspace { display: grid; grid-template-columns: minmax(0, 2fr) minmax(280px, 1fr); gap: 24px; align-items: start; }
.ds-app .ds-lesson-workspace > div > .ds-grid { grid-template-columns: repeat(2, minmax(0, 1fr)); }
.ds-app .ds-lesson-player { margin-bottom: 20px; }
.ds-app .ds-lesson-player .ds-media { display: grid; justify-items: center; gap: 12px; padding: 20px; }
.ds-app .ds-lesson-art { width: 100%; height: 320px; }
.ds-app .ds-lesson-player .ds-play-button { position: absolute; inset: 50% auto auto 50%; transform: translate(-50%, -50%); }
.ds-app .ds-lesson-player > .ds-notice { margin: 16px 0 0; }
.ds-app .ds-lesson-workspace .ds-panel h2 { margin-top: 0; }
.ds-app .ds-lesson-workspace .ds-panel p { font-size: 15px; line-height: 1.5; }
.ds-app .ds-lesson-workspace .ds-panel .ds-button { max-width: 100%; }
.ds-app .ds-lesson-outline > .ds-button { display: flex; width: 100%; margin-top: 12px; }
.ds-app .ds-lesson-outline > .ds-empty { margin: 18px 0; padding: 18px 14px; border-radius: 12px; background: #f3f7fc; }
.ds-app .ds-lesson-outline .ds-empty h3 { margin: 0; font-size: 18px; }

@media (min-width: 1100px) {
  .ds-app .ds-topic-card:nth-child(n+5) .ds-card-link { display: grid; grid-template-columns: 74px minmax(0, 1fr); align-items: center; gap: 12px; }
  .ds-app .ds-topic-card:nth-child(n+5) .ds-topic-art { height: 110px; margin: 0; }
  .ds-app .ds-topic-card:nth-child(n+5) h2 { font-size: 18px; }
  .ds-app .ds-topic-card:nth-child(n+5) .ds-card-link { padding-bottom: 0; padding-right:30px; }
  .ds-app .ds-topic-card:nth-child(n+5) .ds-card-arrow { top: auto; bottom: 0; right: 0; width:28px; height:28px; }
}

/* Tablet: full-width hero rows, two-column topic/scenario collections. */
@media (min-width: 600px) and (max-width: 1099px) {
  .ds-app .ds-topics-intro { grid-template-columns: minmax(0, 1fr); gap: 22px; }
  .ds-app .ds-topics-intro .ds-toolbar { margin-top: 20px; }
  .ds-app .ds-signs-banner { grid-template-columns: minmax(0, 1.2fr) minmax(0, 1fr); padding: 26px; }
  .ds-app .ds-signs-banner .ds-banner-art { max-height: 230px; }
  .ds-app .ds-topic-grid { grid-template-columns: repeat(2, minmax(0, 1fr)); }
  .ds-app .ds-topic-card { padding: 20px; }
  .ds-app .ds-topic-card .ds-card-link { display: grid; grid-template-columns: 82px minmax(0, 1fr); align-items: center; gap: 14px; }
  .ds-app .ds-topic-art { height: 112px; margin: 0; }
  .ds-app .ds-topic-card h2 { font-size: 19px; }
  .ds-app .ds-topic-card .ds-card-body p { font-size: 14px; }
  .ds-app .ds-topic-card .ds-card-link { padding-bottom:0; padding-right:30px; }
  .ds-app .ds-topic-card .ds-card-arrow { top: auto; bottom: 0; right: 0; width: 28px; height: 28px; }
  .ds-app .ds-rules-head { grid-template-columns: minmax(0, 1.2fr) minmax(0, .8fr); gap: 22px; }
  .ds-app .ds-rules-art { height: 240px; }
  .ds-app .ds-rules-grid { grid-template-columns: minmax(0, 1fr); }
  .ds-app .ds-rule-card { grid-template-columns: 100px minmax(0, 1fr) auto; padding: 20px; gap: 20px; }
  .ds-app .ds-rule-art { width: 100px; height: 100px; }
  .ds-app .ds-test-facts { padding: 18px; gap: 14px; }
  .ds-app .ds-test-facts > div { grid-template-columns: 28px minmax(0, 1fr); gap: 6px 10px; }
  .ds-app .ds-test-facts dd { font-size: 16px; }
  .ds-app .ds-scene-hero .ds-banner-copy { padding: 24px; }
  .ds-app .ds-scene-hero-art { min-height: 270px; }
  .ds-app .ds-scene-grid { grid-template-columns: repeat(2, minmax(0, 1fr)); }
  .ds-app .ds-scene-art { height: 160px; }
  .ds-app .ds-progress-overview { grid-template-columns: repeat(3, minmax(0, 1fr)); }
  .ds-app .ds-readiness { grid-column: 1 / -1; grid-template-columns: 170px minmax(0, 1fr); }
  .ds-app .ds-metric-card { padding: 20px; }
  .ds-app .ds-ai-hero { grid-template-columns: minmax(0, 1.4fr) minmax(0, 1fr); gap: 20px; }
  .ds-app .ds-ai-hero--without-art { grid-template-columns: minmax(0, 1fr); }
  .ds-app .ds-ai-hero-art { max-height: 350px; }
  .ds-app .ds-ai-hero .ds-lead { font-size: 20px; }
  .ds-app .ds-ai-hero .ds-panel { padding: 20px; }
  .ds-app .ds-recommendation-row { grid-template-columns: 80px minmax(0, 1fr) auto; }
  .ds-app .ds-recommendation-art { grid-row: 1; width: 80px; height: 72px; }
  .ds-app .ds-recommendation-row .ds-button { grid-column: 3; }
}

@media (max-width: 1099px) {
  .ds-app .ds-question-grid { grid-template-columns: minmax(0, 1fr); gap: 20px; }
  .ds-app .ds-question-art { height: auto; min-height: 0; max-height: 370px; aspect-ratio: 2 / 1; }
  .ds-app .ds-answer { min-height: 76px; }
  .ds-app .ds-test-actions { grid-template-columns:minmax(0,1fr); gap:12px; }
  .ds-app .ds-video-layout { display: flex; flex-direction: column; align-items: stretch; gap: 22px; }
  .ds-app .ds-video-feature-column { display: contents; }
  .ds-app .ds-featured-video { order: 0; }
  .ds-app .ds-video-feature-column > .ds-chips { order: 1; }
  .ds-app .ds-video-list { order: 2; }
  .ds-app .ds-video-banner { order: 3; }
  .ds-app .ds-featured-video-art { height: auto; max-height: 340px; aspect-ratio: 1.9; }
  .ds-app .ds-video-card { grid-template-columns: minmax(150px, .75fr) minmax(0, 1.3fr); gap: 20px; padding: 16px; }
  .ds-app .ds-video-thumb { height: 132px; }
  .ds-app .ds-video-card h2 { font-size: 20px; }
  .ds-app .ds-progress-details { grid-template-columns: minmax(0, 1fr); }
  .ds-app .ds-ai-workspace { grid-template-columns: minmax(0, 1fr); gap: 22px; }
  .ds-app .ds-lesson-workspace { grid-template-columns: minmax(0, 1fr); }
}

/* Phone: natural-height sections, readable labels and 44–48px actions. */
@media (max-width: 599px) {
  .ds-app :is(.ds-topics, .ds-quick-test, .ds-exam, .ds-rules, .ds-videos, .ds-scenarios, .ds-progress, .ds-ai, .ds-lesson) { font-size: 14px; }
  .ds-app .ds-section-head { gap: 12px; align-items: flex-start; }
  .ds-app .ds-section-head > .ds-info-pill { width: 100%; }
  .ds-app :is(.ds-videos, .ds-scenarios) > .ds-page-head { flex-direction: column; gap: 14px; margin-bottom: 18px; }
  .ds-app .ds-info-pill { padding: 12px; gap: 10px; }
  .ds-app .ds-toolbar.ds-search { margin-top: 18px; padding-left: 12px; }
  .ds-app .ds-toolbar.ds-search label { gap: 8px; }
  .ds-app .ds-toolbar.ds-search input { font-size: 16px; }
  .ds-app :is(.ds-topics, .ds-videos, .ds-scenarios, .ds-rules) .ds-chips { gap: 8px; }
  .ds-app :is(.ds-topics, .ds-videos, .ds-scenarios, .ds-rules) .ds-chip { padding: 10px 12px; }
  .ds-app .ds-topics-intro { grid-template-columns: minmax(0, 1fr); gap: 18px; margin-bottom: 18px; }
  .ds-app .ds-topics-intro > .ds-page-head { padding-top: 0; }
  .ds-app .ds-signs-banner { grid-template-columns: minmax(0, 1fr) minmax(100px, .8fr); gap: 12px; padding: 16px; }
  .ds-app .ds-signs-banner h2 { font-size: 24px; }
  .ds-app .ds-signs-banner p { font-size: 14px; }
  .ds-app .ds-signs-banner .ds-banner-art { max-height: 170px; }
  .ds-app .ds-signs-banner .ds-progress-caption { flex-wrap: wrap; gap: 4px; }
  .ds-app .ds-signs-banner .ds-button { min-height: 48px; padding-inline: 12px; }
  .ds-app .ds-topic-grid { grid-template-columns: repeat(2, minmax(0, 1fr)); gap: 12px; }
  .ds-app .ds-topic-card { padding: 14px; }
  .ds-app .ds-topic-art { height: 96px; object-position: center; margin-bottom: 12px; }
  .ds-app .ds-topic-card .ds-card-link { position:relative; padding-bottom:0; }
  .ds-app .ds-topic-card .ds-card-arrow { display:grid; top:0; right:0; bottom:auto; width:28px; height:28px; }
  .ds-app .ds-topic-card h2 { font-size: 16px; line-height: 1.25; }
  .ds-app .ds-topic-card .ds-card-body p { font-size:13px; line-height:1.35; }
  .ds-app .ds-topic-card:nth-child(n+5) .ds-card-link { display:grid; grid-template-columns:44px minmax(0,1fr); align-items:center; gap:8px; }
  .ds-app .ds-topic-card:nth-child(n+5) .ds-topic-art { height:72px; margin:0; }
  .ds-app .ds-topic-card:nth-child(n+5) .ds-card-body p { display:none; }
  .ds-app .ds-topic-card:nth-child(n+5) .ds-card-arrow { position:static; grid-column:2; justify-self:end; }
  .ds-app .ds-topic-card .ds-progress-caption { flex-wrap:nowrap; gap:4px 8px; margin-top:12px; }
  .ds-app .ds-test-head { align-items: flex-start; gap: 14px; margin-bottom: 18px; }
  .ds-app .ds-test-head-art { width: 64px; height: 76px; flex: 0 0 64px; }
  .ds-app .ds-test-head h1 { font-size: 29px; }
  .ds-app .ds-test-head p { margin-bottom: 0; font-size: 15px; }
  .ds-app .ds-test-facts { grid-template-columns: repeat(3, minmax(0, 1fr)); gap: 10px; padding: 14px 12px; }
  .ds-app .ds-test-facts > div { display: flex; flex-direction: column; gap: 6px; align-items: flex-start; min-width: 0; }
  .ds-app .ds-test-facts svg { width: 24px; height: 24px; align-self: flex-start; }
  .ds-app .ds-test-facts dt { font-size: 12px; line-height: 1.35; }
  .ds-app .ds-test-facts dd { margin: auto 0 0; font-size: 14px; line-height: 1.35; text-align: left; overflow-wrap: normal; }
  .ds-app .ds-test-status { grid-template-columns: minmax(0, 1fr) auto; padding: 14px; gap: 12px; }
  .ds-app .ds-test-status strong { font-size: 14px; }
  .ds-app .ds-test-status progress { grid-column: 1 / -1; grid-row: 2; }
  .ds-app .ds-test-status > span { gap: 6px; font-size: 14px; }
  .ds-app .ds-test-status svg { width: 20px; height: 20px; }
  .ds-app .ds-question-panel { padding: 14px; }
  .ds-app .ds-question-panel > .ds-section-head h2 { font-size: 21px; }
  .ds-app .ds-question-panel > .ds-section-head { gap: 8px; margin-bottom: 12px; }
  .ds-app .ds-notice { padding: 12px; margin-bottom: 16px; }
  .ds-app .ds-question-art { aspect-ratio: auto; width: 100%; height: auto; max-height: 260px; }
  .ds-app .ds-answer { min-height: 52px; padding: 12px; gap: 10px; font-size: 15px; }
  .ds-app .ds-answer-list { gap: 10px; }
  .ds-app .ds-notice-warm { margin-top: 18px; gap: 10px; }
  .ds-app .ds-test-actions { margin-top: 16px; }
  .ds-app .ds-rules-head { grid-template-columns: minmax(0, 1fr) 110px; align-items: start; gap: 12px; margin-bottom: 18px; }
  .ds-app .ds-rules-head h2 { font-size: 19px; }
  .ds-app .ds-rules-head p { font-size: 14px; }
  .ds-app .ds-rules-art { width: 110px; height: 160px; }
  .ds-app .ds-rules-grid { grid-template-columns: minmax(0, 1fr); gap: 12px; }
  .ds-app .ds-rule-card { grid-template-columns:54px minmax(0,1fr) auto; gap:10px; padding:14px; align-items:center; }
  .ds-app .ds-rule-art { width:54px; height:74px; grid-row:1; }
  .ds-app .ds-rule-card h2 { font-size:16px; }
  .ds-app .ds-rule-card p { font-size: 14px; }
  .ds-app .ds-rule-card .ds-button { grid-column:3; justify-self:end; padding:9px 8px; font-size:13px; }
  .ds-app .ds-rules > .ds-card-actions { display: grid; grid-template-columns: repeat(3, minmax(0, 1fr)); align-items: stretch; gap: 8px; }
  .ds-app .ds-rules > .ds-card-actions .ds-button { min-height: 48px; padding: 10px 6px; font-size: 14px; overflow-wrap: normal; }
  .ds-app .ds-video-layout { gap: 18px; }
  .ds-app .ds-media-overlay { grid-template-columns: 48px minmax(0, 1fr); column-gap: 12px; padding: 16px; }
  .ds-app .ds-media-overlay .ds-play-button { width: 48px; height: 48px; font-size: 20px; }
  .ds-app .ds-media-overlay h2 { font-size: 23px; }
  .ds-app .ds-media-overlay p { font-size: 14px; }
  .ds-app .ds-video-card { grid-template-columns:112px minmax(0,1fr); align-items: start; gap: 12px; padding: 12px; }
  .ds-app .ds-video-card .ds-card-body { padding-right: 0; }
  .ds-app .ds-video-card h2 { padding-right:0; font-size:16px; }
  .ds-app .ds-video-card > .ds-media { min-height:78px; }
  .ds-app .ds-video-thumb { height:78px; }
  .ds-app .ds-video-card .ds-play-button { left: 8px; bottom: 8px; }
  .ds-app .ds-video-card .ds-card-menu { top:auto; bottom:2px; right:3px; }
  .ds-app .ds-video-card .ds-card-menu summary { background: transparent; }
  .ds-app .ds-video-card .ds-tag { padding: 4px 6px; }
  .ds-app .ds-video-banner { grid-template-columns: minmax(0, 1fr) 96px; gap: 12px; padding: 16px; }
  .ds-app .ds-video-banner h2 { font-size: 21px; }
  .ds-app .ds-video-banner p { font-size: 14px; }
  .ds-app .ds-video-banner .ds-banner-art { max-height: 140px; }
  .ds-app .ds-scene-hero { display: block; position: relative; isolation: isolate; min-height:240px; background:#243b52; }
  .ds-app .ds-scene-hero::after { content: ''; position: absolute; inset: 0; z-index: 0; background: linear-gradient(90deg, #172b43f2 0%, #172b43e0 47%, #172b4366 75%, #172b4300), linear-gradient(180deg, #243b5200 60%, #172b4370); pointer-events: none; }
  .ds-app .ds-scene-hero .ds-banner-copy { position: relative; z-index: 1; width:65%; padding:20px 0 20px 18px; }
  .ds-app .ds-scene-hero-art { position: absolute; z-index: -1; right: 0; bottom: 0; min-height: 0; height:100%; max-height:none; width:100%; object-fit:cover; object-position: right bottom; }
  .ds-app .ds-scene-hero h2 { font-size:24px; }
  .ds-app .ds-scene-hero p { font-size: 14px; }
  .ds-app .ds-scenarios > .ds-chips { margin-block: 18px; }
  .ds-app .ds-scene-grid { grid-template-columns: repeat(2, minmax(0, 1fr)); gap: 12px; }
  .ds-app .ds-scene-card { padding: 12px; }
  .ds-app .ds-scene-art { height: 96px; margin-bottom: 12px; }
  .ds-app .ds-scene-card h2 { font-size: 17px; }
  .ds-app .ds-scene-card p { font-size: 14px; }
  .ds-app .ds-scene-card .ds-tag { padding: 4px 6px; }
  .ds-app .ds-scene-card .ds-card-actions { align-items: stretch; flex-direction: column; gap: 8px; padding-top: 16px; }
  .ds-app .ds-scene-card .ds-card-actions .ds-button { width: 100%; padding-inline: 8px; }
  .ds-app .ds-progress > .ds-page-head { flex-wrap: wrap; margin-bottom: 18px; }
  .ds-app .ds-progress-overview { grid-template-columns: repeat(3, minmax(0, 1fr)); gap: 10px; margin-bottom: 18px; }
  .ds-app .ds-readiness { grid-column: 1 / -1; grid-template-columns: 112px minmax(0, 1fr); justify-items: start; gap: 14px; padding: 16px; }
  .ds-app .ds-readiness-ring { width: 112px; height: 96px; }
  .ds-app .ds-readiness-ring strong { font-size: 30px; }
  .ds-app .ds-readiness > div:last-child { width: 100%; }
  .ds-app .ds-readiness h2 { font-size: 19px; }
  .ds-app .ds-readiness p { font-size: 14px; }
  .ds-app .ds-readiness .ds-info-pill { display: block; padding: 10px; }
  .ds-app .ds-readiness .ds-info-pill svg { vertical-align: middle; margin-right: 4px; }
  .ds-app .ds-metric-card { display: flex; flex-direction: column; gap: 10px; align-items: flex-start; padding: 14px 10px; }
  .ds-app .ds-metric-card > svg { width: 26px; height: 26px; margin: 0; }
  .ds-app .ds-metric-card h2 { font-size: 14px; line-height: 1.35; overflow-wrap: normal; }
  .ds-app .ds-metric-card > strong { margin: 0; font-size: 28px; }
  .ds-app .ds-metric-card p { margin: 0; font-size: 14px; line-height: 1.4; overflow-wrap: normal; }
  .ds-app .ds-metric-card .ds-text-link { min-height: 44px; margin-top: auto; font-size: 14px; }
  .ds-app .ds-progress-details .ds-section-head { flex-wrap: wrap; gap: 8px; }
  .ds-app .ds-progress-details .ds-empty { padding:20px 14px; min-height:120px; }
  .ds-app .ds-progress > .ds-card-actions { margin-top: 18px; }
  .ds-app .ds-ai-hero { display: block; position: relative; padding: 18px 14px 0; margin-bottom: 18px; border-radius: 20px; background: linear-gradient(120deg, #f0f8ff, #dcefff); }
  .ds-app .ds-ai-hero .ds-banner-copy { width: 100%; }
  .ds-app .ds-ai-hero .ds-lead { font-size: 19px; margin-bottom: 16px; }
  .ds-app .ds-ai-hero .ds-panel { position: relative; width: 59%; padding: 12px; margin-bottom: 16px; }
  .ds-app .ds-ai-hero .ds-panel h2 { font-size: 18px; }
  .ds-app .ds-ai-hero .ds-panel p { font-size:14px; }
  .ds-app .ds-ai-hero-art { position: absolute; right: 0; bottom: 0; width:45%; max-height:none; height: auto; object-position: right bottom; }
  .ds-app .ds-ai-hero--without-art .ds-panel { width: 100%; }
  .ds-app .ds-feature-list { flex-direction:column; gap:9px; margin:12px 0 0; }
  .ds-app .ds-feature-list li { gap: 6px; font-size: 14px; }
  .ds-app .ds-ai-hero .ds-feature-list svg { width: 20px; height: 20px; flex-basis: 20px; }
  .ds-app .ds-ai-empty { grid-template-columns: 44px minmax(0, 1fr); gap: 10px; }
  .ds-app .ds-ai-avatar { width: 44px; height: 44px; }
  .ds-app .ds-ai-empty .ds-panel { padding: 14px; }
  .ds-app .ds-ai-empty h2 { font-size: 19px; }
  .ds-app .ds-ai-empty p { font-size: 14px; }
  .ds-app .ds-ai-conversation { gap: 18px; }
  .ds-app .ds-ai-prompts { grid-template-columns: repeat(3, minmax(0, 1fr)); gap: 10px; }
  .ds-app .ds-ai-prompts .ds-card { display: flex; flex-direction: column; gap: 10px; align-items: flex-start; padding: 12px 8px; }
  .ds-app .ds-prompt-art { width: 100%; height: 68px; margin: 0; object-position: center; }
  .ds-app .ds-ai-prompts h3 { margin: 0; font-size: 14px; line-height: 1.35; text-wrap: balance; }
  .ds-app .ds-ai-prompts .ds-button { width: 100%; min-height: 44px; margin-top: auto; padding: 10px 4px; font-size: 14px; }
  .ds-app .ds-ai-recommendations { padding: 16px; }
  .ds-app .ds-ai-recommendations h2 { font-size: 21px; }
  .ds-app .ds-recommendation-row { grid-template-columns: 64px minmax(0, 1fr); gap: 10px 12px; }
  .ds-app .ds-recommendation-art { width: 64px; height: 80px; }
  .ds-app .ds-ai-composer { grid-template-columns:44px minmax(0,1fr) 44px; gap:8px; padding:8px; margin-top:18px; }
  .ds-app .ds-ai-composer textarea { grid-column:2; grid-row:1; min-height:44px; height:44px; padding:11px 8px; resize:none; }
  .ds-app .ds-ai-composer > .ds-button { min-height:44px; padding:8px; font-size:24px; }.ds-app .ds-ai-composer > .ds-muted { padding:0 8px 4px; font-size:12px; }
  .ds-app .ds-lesson > .ds-page-head { margin-bottom: 18px; }
  .ds-app .ds-lesson-workspace { gap: 18px; }
  .ds-app .ds-lesson-workspace > div > .ds-grid { grid-template-columns: minmax(0, 1fr); }
  .ds-app .ds-lesson-player .ds-media { padding: 14px; }
  .ds-app .ds-lesson-art { height: 220px; }
  .ds-app .ds-lesson-workspace .ds-panel p { font-size: 14px; }
}

/* Reference results use the same native cards; account fallbacks remain separate. */
.ds-app .ds-weak-topics,.ds-app .ds-reference-events { margin-top:12px; }
.ds-app .ds-weak-topic { display:grid; grid-template-columns:58px minmax(0,1fr) auto 28px; align-items:center; gap:12px; min-height:80px; padding:12px 0; }
.ds-app .ds-weak-topic+.ds-weak-topic,.ds-app .ds-history-row+.ds-history-row { border-top:1px solid var(--ds-line); }
.ds-app .ds-weak-topic img { width:58px; height:52px; object-fit:contain; }
.ds-app .ds-weak-topic>span>strong { font-size:16px; }
.ds-app .ds-weak-topic progress { margin-top:8px; height:6px; }
.ds-app .ds-weak-topic progress.is-low::-webkit-progress-value { background:#f16772; }
.ds-app .ds-weak-topic progress.is-mid::-webkit-progress-value { background:#f4a253; }
.ds-app .ds-weak-topic progress.is-low::-moz-progress-bar { background:#f16772; }
.ds-app .ds-weak-topic progress.is-mid::-moz-progress-bar { background:#f4a253; }
.ds-app .ds-fixture-arrow { display:grid; place-items:center; width:28px; height:28px; border-radius:50%; color:var(--ds-blue); background:var(--ds-pale); }
.ds-app .ds-history-row { display:grid; grid-template-columns:32px minmax(0,1fr) auto; align-items:center; gap:12px; padding:18px 0; }
.ds-app .ds-history-row>svg { color:var(--ds-blue); }
.ds-app .ds-history-row h3 { font-size:16px; }
.ds-app .ds-history-row p { margin-top:6px; font-size:14px; }
.ds-app .ds-history-row>strong { font-size:18px; color:#19a276; }
@media(max-width:599px) {
 .ds-app .ds-weak-topic { grid-template-columns:44px minmax(0,1fr) auto 24px; gap:8px; min-height:72px; }
 .ds-app .ds-weak-topic img { width:44px; height:46px; }
 .ds-app .ds-weak-topic>span>strong,.ds-app .ds-history-row h3 { font-size:14px; }
 .ds-app .ds-history-row { grid-template-columns:26px minmax(0,1fr) auto; gap:8px; padding:14px 0; }
 .ds-app .ds-history-row p { font-size:12px; }
 .ds-app .ds-history-row>strong { font-size:16px; }
 .ds-app .ds-readiness-ring span { max-width:75px; text-align:center; font-size:11px; line-height:1.15; }
}

/* Static conversation from the approved preview; sending still opens availability. */
.ds-app .ds-ai-speech { position:absolute; z-index:1; top:10px; right:3%; max-width:33%; border-radius:16px; background:#fff; padding:14px 18px; color:var(--ds-muted); font-size:16px; text-align:center; box-shadow:0 10px 28px #668bb815; }
.ds-app .ds-ai-speech::after { content:""; position:absolute; bottom:-8px; right:35%; width:16px; height:16px; background:#fff; transform:rotate(45deg); }
.ds-app .ds-reference-chat { display:grid; gap:14px; }
.ds-app .ds-chat-message { display:grid; grid-template-columns:48px minmax(0,1fr); align-items:start; gap:12px; }
.ds-app .ds-chat-message .ds-ai-avatar { width:48px; height:48px; }
.ds-app .ds-chat-message .ds-panel { padding:18px; border-top-left-radius:6px; }
.ds-app .ds-chat-message p { color:var(--ds-ink); font-size:15px; line-height:1.45; }
.ds-app .ds-chat-message time { display:block; margin-top:7px; font-size:12px; text-align:right; color:var(--ds-muted); }
.ds-app .ds-chat-user { grid-template-columns:minmax(0,1fr); padding-left:90px; }
.ds-app .ds-chat-user .ds-panel { background:#e3f1ff; border-radius:18px 6px 18px 18px; }
.ds-app .ds-ai-prompts .ds-card>p { margin:0 0 12px; font-size:14px; line-height:1.35; }
.ds-app .ds-ai-workspace { grid-template-columns:minmax(0,2fr) minmax(0,1fr); }
.ds-app .ds-ai-composer>.ds-button:last-of-type { border-radius:50%; width:44px; height:44px; padding:0; }
.ds-app .ds-ai-composer>.ds-button:first-of-type { background:transparent; border:0; padding:0; min-width:44px; font-size:26px; }
.ds-app .ds-ai-composer textarea { min-height:44px; height:44px; resize:none; }
@media(max-width:1099px) { .ds-app .ds-ai-workspace { grid-template-columns:minmax(0,1fr); } }
@media(max-width:599px) {
 .ds-app .ds-ai-speech { top:98px; right:10px; max-width:37%; padding:10px; font-size:12px; }.ds-app .ds-ai-hero-art { width:46%; }
 .ds-app .ds-chat-message { grid-template-columns:34px minmax(0,1fr); gap:8px; }.ds-app .ds-chat-message .ds-ai-avatar { width:34px; height:34px; }.ds-app .ds-chat-message .ds-panel { padding:12px; }.ds-app .ds-chat-message p { font-size:14px; }.ds-app .ds-chat-user { grid-template-columns:minmax(0,1fr); padding-left:45px; }
 .ds-app .ds-ai-prompts .ds-card>p { font-size:12px; line-height:1.3; margin:0 0 4px; }
}

@media(max-width:599px) {
 .ds-app[data-ds-reference-fixture="1"] .ds-metric-card { gap:7px; padding:12px 9px; }
 .ds-app[data-ds-reference-fixture="1"] .ds-metric-card p { font-size:12px; line-height:1.3; }
 .ds-app .ds-recommendation-row { grid-template-columns:48px minmax(0,1fr) auto; gap:10px; }
 .ds-app .ds-recommendation-art { grid-row:1; width:48px; height:62px; }
 .ds-app .ds-recommendation-row h3 { font-size:14px; }
 .ds-app .ds-recommendation-row p { font-size:12px; line-height:1.3; }
 .ds-app .ds-recommendation-row .ds-button { grid-column:3; padding:9px 8px; font-size:12px; }
}

/* Isolate the existing warning CGI; the source image itself stays unchanged. */
.ds-app .ds-prompt-warning { width:min(100%,139px); height:auto; aspect-ratio:302/208; align-self:center; clip-path:polygon(43% 10%,80% 94%,11% 94%); }
.ds-app[data-ds-reference-fixture="1"] .ds-answer { cursor:pointer; }
@media(max-width:599px) { .ds-app .ds-prompt-warning { width:min(100%,98px); } }