/*
 * HTP Academy — Unité 1 / Bài 1
 * Couche UI/UX stricte issue du dossier de référence fourni.
 * Aucun changement de contenu ou de logique pédagogique.
 */

.htp-u1-cdc {
  --cdc-navy: #123A6D;
  --cdc-ink: #17324F;
  --cdc-blue: #EDF6FB;
  --cdc-line: #CBDDE4;
  --cdc-coral: #A64046;
  --cdc-green: #E8F5EE;
  --cdc-vi: #4D6077;
  --cdc-secondary: #52657A;
  --cdc-vi-navy: #CCE2F6;
  --cdc-error: #FBECEC;
  --cdc-near: #FFF8DF;
  --cdc-disabled: #E7EDF1;
  width: 100%;
  max-width: 1320px;
  margin-inline: auto;
  color: var(--cdc-ink);
  font-family: Inter, "Noto Sans", Arial, sans-serif;
  font-size: 16px;
  line-height: 1.6;
}

.htp-u1-cdc,
.htp-u1-cdc * { box-sizing: border-box; }
.htp-u1-cdc [hidden] { display: none !important; }
.htp-u1-cdc [lang="fr"] { color: var(--cdc-ink); }
.htp-u1-cdc [lang="vi"] { color: var(--cdc-vi); font-family: "Noto Sans", Inter, Arial, sans-serif; }
.htp-u1-cdc .is-secondary { color: var(--cdc-secondary); }
.htp-u1-cdc :is(button, a, input):focus-visible {
  outline: 3px solid #0F3975 !important;
  outline-offset: 3px;
}
.htp-u1-cdc :is(button, a) { transition: filter .15s ease, background-color .15s ease, border-color .15s ease, color .15s ease; }
.htp-u1-cdc :is(button, a):not(:disabled):hover { filter: brightness(.94); }
.htp-u1-cdc button:disabled {
  border-color: #CBDDE4 !important;
  color: var(--cdc-secondary) !important;
  background: var(--cdc-disabled) !important;
  opacity: 1 !important;
  cursor: not-allowed !important;
}
.htp-u1-cdc button:disabled :is(small, [lang="vi"]) { color: var(--cdc-secondary) !important; }

/* Hiérarchie générale : Hero > Leçon/Exercices > progression > écran courant. */
.htp-bai-one-experience {
  width: min(100%, 1440px);
  margin-inline: auto;
  padding: 24px clamp(18px, 4vw, 52px) 92px;
  border-color: var(--cdc-line, #CBDDE4);
  background: #F8FBFC;
  font-family: Inter, "Noto Sans", Arial, sans-serif;
}
.htp-u1-cdc-hero {
  padding: clamp(28px, 5vw, 48px) !important;
  border: 1px solid var(--cdc-line) !important;
  border-radius: 26px !important;
  color: var(--cdc-ink);
  background: #FFFFFF !important;
  box-shadow: 0 14px 34px rgba(18, 58, 109, .08) !important;
}
.htp-u1-cdc-hero .htp-kicker { color: var(--cdc-coral) !important; }
.htp-u1-cdc-hero h1 {
  max-width: 820px;
  margin: 8px 0;
  color: var(--cdc-navy) !important;
  font-size: clamp(40px, 5vw, 64px) !important;
  line-height: 1.05 !important;
}
.htp-u1-cdc-hero > p { max-width: 820px; margin: 7px 0; line-height: 1.6; }
.htp-u1-cdc-hero > p[lang="fr"] { color: var(--cdc-ink) !important; font-size: 18px; font-weight: 750; }
.htp-u1-cdc-hero > p[lang="vi"] { color: var(--cdc-vi) !important; font-size: 15px; }
.htp-u1-cdc .htp-lesson-meta { display: flex; flex-wrap: wrap; gap: 8px; margin-top: 20px; }
.htp-u1-cdc .htp-lesson-meta span {
  display: flex;
  align-items: center;
  gap: 4px 7px;
  padding: 8px 12px !important;
  border: 1px solid var(--cdc-line) !important;
  border-radius: 999px;
  color: var(--cdc-navy) !important;
  background: var(--cdc-blue) !important;
  box-shadow: none !important;
}
.htp-u1-cdc .htp-lesson-meta b { color: var(--cdc-navy) !important; }
.htp-u1-cdc .htp-lesson-meta small { color: var(--cdc-vi) !important; font-size: 12px; }

.htp-u1-cdc > .htp-u1-final-tabs {
  position: relative !important;
  top: auto !important;
  z-index: 2;
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: 8px;
  margin: 20px 0 10px;
  padding: 8px;
  border: 1px solid var(--cdc-line) !important;
  border-radius: 18px;
  background: #FFFFFF !important;
  box-shadow: none !important;
}
.htp-u1-cdc > .htp-u1-final-tabs button {
  min-width: 0;
  min-height: 64px;
  padding: 10px 14px;
  border: 1px solid var(--cdc-line) !important;
  border-radius: 13px;
  color: var(--cdc-navy) !important;
  background: var(--cdc-blue) !important;
  font: inherit;
  cursor: pointer;
}
.htp-u1-cdc > .htp-u1-final-tabs button b,
.htp-u1-cdc > .htp-u1-final-tabs button small { display: block; }
.htp-u1-cdc > .htp-u1-final-tabs button small { margin-top: 2px; color: var(--cdc-secondary) !important; font-size: 13px; }
.htp-u1-cdc > .htp-u1-final-tabs button.is-active {
  border-color: var(--cdc-navy) !important;
  color: #FFFFFF !important;
  background: var(--cdc-navy) !important;
}
.htp-u1-cdc > .htp-u1-final-tabs button.is-active b { color: #FFFFFF !important; }
.htp-u1-cdc > .htp-u1-final-tabs button.is-active small { color: var(--cdc-vi-navy) !important; }

.htp-u1-cdc-phases {
  position: relative !important;
  top: auto !important;
  z-index: 1;
  display: grid;
  grid-template-columns: repeat(4, minmax(0, 1fr)) !important;
  gap: 8px;
  margin: 0 0 18px;
  padding: 7px;
  border: 1px solid var(--cdc-line) !important;
  border-radius: 16px;
  background: #FFFFFF !important;
  box-shadow: none !important;
  overflow: visible !important;
  backdrop-filter: none !important;
}
.htp-u1-cdc-phases span {
  min-width: 0;
  padding: 9px 8px;
  border: 1px solid transparent;
  border-radius: 10px;
  color: var(--cdc-secondary) !important;
  text-align: center;
}
.htp-u1-cdc-phases :is(b, small) { display: block; }
.htp-u1-cdc-phases small { color: var(--cdc-secondary) !important; font-size: 12px; }
.htp-u1-cdc-phases span.is-active { border-color: var(--cdc-navy); color: #FFFFFF !important; background: var(--cdc-navy); }
.htp-u1-cdc-phases span.is-active b { color: #FFFFFF !important; }
.htp-u1-cdc-phases span.is-active small { color: var(--cdc-vi-navy) !important; }
.htp-u1-cdc-phases span.is-done { border-color: #CBDDE4; color: #185A35 !important; background: var(--cdc-green); }
.htp-u1-cdc-phases span.is-done small { color: #185A35 !important; }
.htp-u1-cdc-progress {
  position: relative;
  width: min(100%, 1080px);
  height: 7px;
  margin: 18px auto 32px;
  border-radius: 999px;
  background: var(--cdc-line) !important;
}
.htp-u1-cdc-progress i { display: block; height: 100%; border-radius: inherit; background: var(--cdc-coral) !important; }
.htp-u1-cdc-progress span { position: absolute; top: 13px; right: 0; color: var(--cdc-secondary) !important; background: #F8FBFC; font-size: 12px; }

/* Écrans pédagogiques. */
.htp-u1-cdc-screen {
  width: min(100%, 1080px);
  margin-inline: auto;
  overflow: hidden;
  border: 1px solid var(--cdc-line) !important;
  border-radius: 22px !important;
  background: #FFFFFF !important;
  box-shadow: 0 12px 30px rgba(18, 58, 109, .07) !important;
}
.htp-u1-cdc-screen__header {
  display: flex;
  align-items: center;
  gap: 16px;
  padding: 20px clamp(18px, 3vw, 28px) !important;
  border-bottom: 1px solid var(--cdc-line) !important;
  background: var(--cdc-blue) !important;
}
.htp-u1-cdc-screen__header > span {
  display: grid;
  flex: 0 0 46px;
  height: 46px;
  place-items: center;
  border-radius: 12px !important;
  color: #FFFFFF !important;
  background: var(--cdc-coral) !important;
}
.htp-u1-cdc-screen__header h2 { margin: 0; color: var(--cdc-navy) !important; font-size: clamp(26px, 3vw, 34px) !important; line-height: 1.2; }
.htp-u1-cdc-screen__header p { margin: 4px 0 0; color: var(--cdc-vi) !important; font-size: 15px; }
.htp-u1-cdc-screen__body { padding: clamp(20px, 3vw, 28px) !important; }
.htp-u1-cdc-screen__body p[lang="fr"] { color: var(--cdc-ink) !important; font-size: 17px; line-height: 1.65; }
.htp-u1-cdc-screen__body p[lang="vi"] { color: var(--cdc-vi) !important; font-size: 15px; line-height: 1.6; }
.htp-u1-cdc-screen__nav {
  display: flex;
  justify-content: space-between;
  gap: 12px;
  padding: 16px clamp(18px, 3vw, 28px) !important;
  border-top: 1px solid var(--cdc-line) !important;
  background: #F8FBFC !important;
}
.htp-u1-cdc-screen__nav button {
  min-width: 160px;
  min-height: 48px;
  padding: 9px 16px;
  border: 1px solid var(--cdc-navy) !important;
  border-radius: 11px;
  color: #FFFFFF !important;
  background: var(--cdc-navy) !important;
  font: inherit;
  font-weight: 800;
}
.htp-u1-cdc-screen__nav button small { display: block; color: var(--cdc-vi-navy) !important; font-size: 12px; }
.htp-u1-cdc-screen__nav button:first-child { color: var(--cdc-navy) !important; background: #FFFFFF !important; }
.htp-u1-cdc-screen__nav button:first-child small { color: var(--cdc-secondary) !important; }

/* Bienvenue. */
.htp-u1-cdc-welcome { display: grid; grid-template-columns: minmax(280px, .95fr) minmax(0, 1.05fr); align-items: stretch; gap: clamp(24px, 4vw, 40px); }
.htp-u1-cdc-welcome figure { margin: 0; overflow: hidden; border: 1px solid var(--cdc-line); border-radius: 18px; background: var(--cdc-blue); }
.htp-u1-cdc-welcome img { display: block; width: 100%; height: 100%; min-height: 390px; object-fit: cover; }
.htp-u1-cdc-welcome h3 { margin: 0; color: var(--cdc-navy) !important; font-size: clamp(28px, 3vw, 40px); }
.htp-u1-cdc-howto { margin-top: 16px; padding: 14px; border: 1px solid var(--cdc-line) !important; border-radius: 14px; background: var(--cdc-blue) !important; }
.htp-u1-cdc-howto h4 { margin: 0 0 9px; color: var(--cdc-navy); }
.htp-u1-cdc-howto ol { display: grid; grid-template-columns: repeat(5, minmax(0, 1fr)); gap: 6px; margin: 0; padding: 0; }
.htp-u1-cdc-howto li { list-style: none; padding: 8px; border: 1px solid var(--cdc-line); border-radius: 10px; background: #FFFFFF; }
.htp-u1-cdc-howto li strong { display: block; color: var(--cdc-navy); font-size: 13px; }
.htp-u1-cdc-howto li small { display: block; color: var(--cdc-vi); font-size: 12px; }
.htp-u1-cdc-howto > p { margin: 10px 0 0; font-size: 13px; }
.htp-u1-cdc-welcome__actions { display: flex; align-items: stretch; flex-wrap: wrap; gap: 9px; margin-top: 16px; }
.htp-u1-cdc-welcome__actions .htp-core-button { min-height: 48px; }
.htp-u1-cdc-welcome__actions .htp-core-button:first-child { color: #FFFFFF !important; background: var(--cdc-navy) !important; }
.htp-u1-cdc-welcome__actions .htp-core-button:first-child small { color: var(--cdc-vi-navy) !important; }
.htp-u1-cdc-welcome__actions .htp-core-button--secondary { border: 1px solid var(--cdc-navy) !important; color: var(--cdc-navy) !important; background: #FFFFFF !important; }

/* Blocs notion, exemple, micro-exercice et feedback. */
.htp-u1-cdc-notion { overflow: hidden; border: 1px solid var(--cdc-line) !important; border-radius: 18px !important; background: #FFFFFF !important; box-shadow: none !important; }
.htp-u1-cdc-notion__tabs { display: grid; grid-template-columns: repeat(4, minmax(0, 1fr)) !important; gap: 7px; padding: 7px; border-bottom: 1px solid var(--cdc-line) !important; background: var(--cdc-blue) !important; overflow: visible !important; }
.htp-u1-cdc-notion__tabs button { display: grid; grid-template-columns: 32px minmax(0, 1fr); grid-template-rows: auto auto; align-items: center; min-width: 0 !important; min-height: 68px; padding: 10px; border: 1px solid var(--cdc-line) !important; border-radius: 12px; color: var(--cdc-navy) !important; background: #FFFFFF !important; text-align: left; }
.htp-u1-cdc-notion__tabs button > span { display: grid; grid-row: 1 / 3; width: 30px; height: 30px; place-items: center; border: 1px solid var(--cdc-line); border-radius: 50%; }
.htp-u1-cdc-notion__tabs button > b { color: var(--cdc-navy) !important; font-size: 14px; line-height: 1.2; }
.htp-u1-cdc-notion__tabs button > small { color: var(--cdc-secondary) !important; font-size: 12px; line-height: 1.2; }
.htp-u1-cdc-notion__tabs button.is-active { border-color: var(--cdc-navy) !important; color: #FFFFFF !important; background: var(--cdc-navy) !important; }
.htp-u1-cdc-notion__tabs button.is-active > :is(span, b) { color: #FFFFFF !important; }
.htp-u1-cdc-notion__tabs button.is-active > small { color: var(--cdc-vi-navy) !important; }
.htp-u1-cdc-notion__panels { padding: clamp(18px, 3vw, 28px) !important; }
.htp-u1-cdc-explanation { margin: 0 0 20px; padding: 18px 20px !important; border-left: 5px solid var(--cdc-coral) !important; border-radius: 12px; color: var(--cdc-ink) !important; background: #F8FBFC !important; }
.htp-u1-cdc-explanation > strong { display: block; margin-bottom: 7px; color: var(--cdc-coral) !important; }
.htp-u1-cdc-explanation p[lang="fr"] { color: var(--cdc-ink) !important; font-size: 17px; }
.htp-u1-cdc-explanation p[lang="vi"] { color: var(--cdc-vi) !important; font-size: 15px; }
.htp-u1-cdc :is(.htp-u1-cdc-language-grid article, .htp-u1-cdc-structures article, .htp-u1-cdc-dialogue, .htp-u1-cdc-question, .htp-u1-cdc-input) { border-color: var(--cdc-line) !important; background: #FFFFFF !important; box-shadow: none !important; }
.htp-u1-cdc-micro { margin-top: 24px; padding: clamp(18px, 3vw, 24px); border: 1px solid var(--cdc-line) !important; border-radius: 18px; background: var(--cdc-green) !important; }
.htp-u1-cdc-micro > h3 { color: var(--cdc-navy) !important; }
.htp-u1-cdc-micro > h3 small { color: var(--cdc-vi) !important; }
.htp-u1-cdc-options button { min-height: 44px; border-color: var(--cdc-line) !important; color: var(--cdc-navy) !important; background: #FFFFFF !important; }
.htp-u1-cdc-options button.is-correct { border-color: #287147 !important; color: #185A35 !important; background: var(--cdc-green) !important; }
.htp-u1-cdc-options button.is-wrong { border-color: var(--cdc-coral) !important; color: #762C32 !important; background: var(--cdc-error) !important; }
.htp-u1-cdc input { min-height: 46px; color: var(--cdc-ink); background: #FFFFFF; }
.htp-u1-cdc input.is-correct { border-color: #287147 !important; background: var(--cdc-green) !important; }
.htp-u1-cdc input.is-wrong { border-color: var(--cdc-coral) !important; background: var(--cdc-error) !important; }
.htp-u1-cdc input.is-near { border-color: #9A6500 !important; background: var(--cdc-near) !important; }
.htp-u1-cdc :is(.htp-u1-cdc-input button, .htp-u1-cdc-question > button) { min-height: 44px; color: #FFFFFF !important; background: var(--cdc-navy) !important; }

/* Audio : compact, lisible, sans ID technique visible. */
.htp-u1-cdc-audio-grid { display: grid; grid-template-columns: repeat(2, minmax(0, 1fr)); gap: 10px; margin: 20px 0; }
.htp-u1-cdc-audio { display: flex; flex-direction: column; gap: 7px; padding: 12px !important; border: 1px solid var(--cdc-line) !important; border-radius: 12px !important; background: var(--cdc-blue) !important; }
.htp-u1-cdc-audio__id { display: none !important; }
.htp-u1-cdc-audio__buttons { display: grid; grid-template-columns: repeat(2, minmax(0, 1fr)); gap: 6px; }
.htp-u1-cdc-audio .htp-speak-button { min-height: 44px; padding: 7px 9px; border: 1px solid var(--cdc-navy) !important; border-radius: 9px; color: #FFFFFF !important; background: var(--cdc-navy) !important; }
.htp-u1-cdc-audio .htp-speak-button small { display: block; color: var(--cdc-vi-navy) !important; font-size: 12px; }
.htp-u1-cdc-audio .htp-speak-button--slow { color: var(--cdc-navy) !important; background: #FFFFFF !important; }
.htp-u1-cdc-audio .htp-speak-button--slow small { color: var(--cdc-secondary) !important; }
.htp-u1-cdc .htp-audio-awaiting,
.htp-u1-cdc .htp-audio-awaiting span { color: var(--cdc-secondary) !important; font-size: 12px; }
.htp-u1-cdc-audio-choice__label { color: var(--cdc-navy) !important; }
.htp-u1-cdc-audio-choice__label small { display: block; color: var(--cdc-vi) !important; }

/* Exercices : un exercice visible, une action principale. */
.htp-u1-cdc-practice { width: min(100%, 1080px); margin-inline: auto; padding: clamp(20px, 3vw, 28px) !important; border: 1px solid var(--cdc-line) !important; border-radius: 22px !important; background: #FFFFFF !important; }
.htp-u1-cdc-practice > header h2 { color: var(--cdc-navy) !important; }
.htp-u1-cdc-practice-set { display: grid; gap: 16px; margin-top: 20px; }
.htp-u1-cdc-practice-set > article { padding: clamp(18px, 3vw, 26px) !important; border: 1px solid var(--cdc-line) !important; border-radius: 16px !important; background: #FFFFFF !important; box-shadow: none !important; }
.htp-u1-cdc-practice-set > article > h3 { color: var(--cdc-navy) !important; }
.htp-u1-cdc-practice-set > article > h3 small { color: var(--cdc-vi) !important; }
.htp-u1-practice-progress { margin: 20px 0 16px; padding: 14px 16px; border: 1px solid var(--cdc-line); border-radius: 13px; background: var(--cdc-blue); }
.htp-u1-practice-progress :is(strong, small) { display: block; }
.htp-u1-practice-progress strong { color: var(--cdc-navy); }
.htp-u1-practice-progress small { color: var(--cdc-vi); }
.htp-u1-practice-progress i { display: block; height: 7px; margin-top: 10px; overflow: hidden; border-radius: 999px; background: var(--cdc-line); }
.htp-u1-practice-progress i span { display: block; height: 100%; border-radius: inherit; background: var(--cdc-coral); }
.htp-u1-practice-nav { display: grid; grid-template-columns: repeat(2, minmax(0, 1fr)); gap: 10px; margin-top: 20px; padding-top: 16px; border-top: 1px solid var(--cdc-line); }
.htp-u1-practice-nav button { min-height: 48px; border: 1px solid var(--cdc-navy); border-radius: 10px; color: #FFFFFF; background: var(--cdc-navy); font: inherit; font-weight: 800; }
.htp-u1-practice-nav button small { display: block; color: var(--cdc-vi-navy); }
.htp-u1-practice-nav button.is-secondary { color: var(--cdc-navy); background: #FFFFFF; }
.htp-u1-practice-nav button.is-secondary small { color: var(--cdc-secondary); }

/* Mission, mini-bilan, quiz et remédiation. */
.htp-u1-cdc-mission-stage { width: min(100%, 1080px); margin: 34px auto 0; padding: clamp(20px, 3vw, 28px); border: 1px solid var(--cdc-line); border-radius: 24px; background: var(--cdc-blue); }
.htp-u1-cdc-mission-stage > header h2 { color: var(--cdc-navy) !important; }
.htp-u1-cdc-mission-stage > header p[lang="vi"] { color: var(--cdc-vi) !important; }
.htp-u1-cdc-mission { display: grid; grid-template-columns: minmax(260px, .85fr) minmax(0, 1.15fr); align-items: start; gap: 18px; }
.htp-u1-cdc-mission__visual { grid-row: 1 / 3; margin: 0; overflow: hidden; border: 1px solid var(--cdc-line); border-radius: 18px; background: #FFFFFF; }
.htp-u1-cdc-mission__visual img { display: block; width: 100%; height: 100%; min-height: 430px; object-fit: cover; }
.htp-u1-cdc-mission > header { padding: 20px; border-radius: 16px; color: #FFFFFF !important; background: var(--cdc-navy) !important; }
.htp-u1-cdc-mission > header :is(span, h3) { color: #FFFFFF !important; }
.htp-u1-cdc-mission > header p[lang="vi"] { color: var(--cdc-vi-navy) !important; }
.htp-u1-cdc-mission > ol { grid-column: 2; grid-template-columns: 1fr; margin: 0; }
.htp-u1-cdc-mission > ol li { border-color: var(--cdc-line) !important; background: #FFFFFF !important; }
.htp-u1-cdc-mission > :is(.htp-u1-cdc-question, .htp-u1-cdc-input, .htp-u1-cdc-audio, .htp-u1-cdc-recorder, .htp-u1-cdc-quiz-link) { grid-column: 1 / -1; }
.htp-bai-one-experience .htp-mini-game,
.htp-bai-one-experience .htp-quiz[data-bilingual="1"] { width: min(100%, 1080px); margin: 34px auto; border: 1px solid #CBDDE4 !important; border-radius: 24px; background: #FFFFFF !important; box-shadow: 0 10px 28px rgba(18, 58, 109, .07) !important; }
.htp-bai-one-experience .htp-mini-game.is-completed { background: #E8F5EE !important; }
.htp-bai-one-experience .htp-quiz[data-bilingual="1"] { background: #EDF6FB !important; }
.htp-bai-one-experience .htp-quiz-step { border-color: #CBDDE4 !important; background: #FFFFFF !important; }
.htp-bai-one-experience .htp-quiz-step > label { border-color: #CBDDE4 !important; background: #FFFFFF !important; }
.htp-bai-one-experience .htp-quiz-step > label.is-correct { border-color: #287147 !important; background: #E8F5EE !important; }
.htp-bai-one-experience .htp-quiz-step > label.is-wrong { border-color: #A64046 !important; background: #FBECEC !important; }
.htp-bai-one-experience .htp-remediation--bai-one { border-color: #CBDDE4 !important; background: #EDF6FB !important; }
.htp-bai-one-experience :is(.htp-mini-game, .htp-quiz, .htp-remediation) [lang="vi"] { color: #4D6077; }
.htp-bai-one-experience :is(.htp-mini-game, .htp-quiz, .htp-remediation) .on-navy [lang="vi"],
.htp-bai-one-experience :is(.htp-mini-game, .htp-quiz, .htp-remediation) .htp-core-button small,
.htp-bai-one-experience .htp-remediation-production button small { color: #CCE2F6; }
.htp-bai-one-experience :is(.htp-mini-game, .htp-quiz, .htp-remediation) button:disabled small { color: #52657A !important; }

@media (max-width: 1023px) {
  .htp-u1-cdc-welcome,
  .htp-u1-cdc-mission { grid-template-columns: 1fr; }
  .htp-u1-cdc-mission__visual { grid-row: auto; }
  .htp-u1-cdc-mission > ol { grid-column: 1; }
  .htp-u1-cdc-mission__visual img { min-height: 0; height: auto; }
  .htp-u1-cdc-notion__tabs { grid-template-columns: repeat(2, minmax(0, 1fr)) !important; }
  .htp-u1-cdc-howto ol { grid-template-columns: repeat(2, minmax(0, 1fr)); }
}

@media (max-width: 640px) {
  .htp-bai-one-experience { padding: 12px 10px 92px; overflow-x: hidden; }
  .htp-u1-cdc { max-width: 100%; overflow-x: hidden; font-size: 16px; }
  .htp-u1-cdc-hero { padding: 24px 16px !important; border-radius: 20px !important; }
  .htp-u1-cdc-hero h1 { font-size: clamp(32px, 10vw, 40px) !important; }
  .htp-u1-cdc .htp-lesson-meta { display: grid; grid-template-columns: 1fr; }
  .htp-u1-cdc .htp-lesson-meta span { width: 100%; }
  .htp-u1-cdc > .htp-u1-final-tabs { grid-template-columns: repeat(2, minmax(0, 1fr)); }
  .htp-u1-cdc-phases { grid-template-columns: repeat(2, minmax(0, 1fr)) !important; }
  .htp-u1-cdc-welcome img { min-height: 0; height: auto; }
  .htp-u1-cdc-howto ol,
  .htp-u1-cdc-audio-grid,
  .htp-u1-cdc-audio__buttons,
  .htp-u1-practice-nav,
  .htp-u1-cdc-screen__nav { grid-template-columns: 1fr !important; }
  .htp-u1-cdc-screen__nav { display: grid; }
  .htp-u1-cdc-screen__nav button,
  .htp-u1-practice-nav button { width: 100%; min-width: 0; }
  .htp-u1-cdc-notion__tabs { grid-template-columns: repeat(2, minmax(0, 1fr)) !important; }
  .htp-u1-cdc-notion__tabs button { grid-template-columns: 28px minmax(0, 1fr); min-height: 64px; padding: 8px 7px; }
  .htp-u1-cdc-notion__tabs button > span { width: 27px; height: 27px; }
  .htp-u1-cdc-notion__tabs button > b { font-size: 13px; overflow-wrap: anywhere; }
  .htp-u1-cdc-notion__tabs button > small { font-size: 12px; overflow-wrap: anywhere; }
  .htp-u1-cdc-screen__body,
  .htp-u1-cdc-notion__panels,
  .htp-u1-cdc-practice,
  .htp-u1-cdc-mission-stage { padding-inline: 14px !important; }
  .htp-u1-cdc :is(input, button, a) { max-width: 100%; overflow-wrap: anywhere; }
  .htp-bai-one-experience .htp-mobile-lesson-bar { max-height: 74px; }
}

@media (max-width: 390px) {
  .htp-bai-one-experience { padding-inline: 10px; }
  .htp-u1-cdc-screen__header { align-items: flex-start; gap: 10px; padding: 16px 12px !important; }
  .htp-u1-cdc-screen__header > span { flex-basis: 40px; height: 40px; }
  .htp-u1-cdc-screen__body,
  .htp-u1-cdc-notion__panels { padding-inline: 10px !important; }
  .htp-u1-cdc-phases span { padding: 8px 5px; }
  .htp-u1-cdc-phases :is(b, small) { font-size: 12px; }
}