/* Scoped to the method story, three discoveries and TOEIC application. */
.dna-story, .dna-play { color: var(--ink); padding: clamp(40px, 6vw, 76px) 0; scroll-margin-top: 100px; }
.dna-story { background: #fbf8f1; }
.dna-play { --dna-green: #236746; --dna-blue: #245e9b; --dna-yellow: #805b06; --dna-gold: #796332; background: #f3f9fa; }
.dna-play__wrap { width: min(100% - 40px, 1080px); margin-inline: auto; }
.dna-story__layout { display: grid; grid-template-columns: minmax(220px, .7fr) minmax(0, 1.3fr); gap: clamp(28px, 5vw, 64px); align-items: center; }
.dna-story__book { margin: 0; padding: 24px; border-radius: 28px; background: #f0e7d5; }
.dna-story__book img { display: block; width: 100%; max-width: 310px; height: auto; margin: auto; border-radius: 6px; box-shadow: 0 16px 28px -14px #3d332c80; }
.dna-story h2, .dna-play__heading h2 { font: 600 clamp(27px, 3.5vw, 38px)/1.45 var(--font-serif); margin: 12px 0 22px; text-wrap: balance; }
.dna-story p, .dna-play p { font-size: 17px; line-height: 1.8; color: var(--body); }
.dna-story__copy p { margin: 0 0 20px; }
.dna-story__invitation { font-weight: 600; }
.dna-story__cta { display: inline-flex; gap: 18px; align-items: center; justify-content: center; min-height: 54px; padding: 14px 24px; border-radius: 16px; background: var(--teal-deep); color: #fff; font-size: 17px; font-weight: 600; text-decoration: none; box-shadow: 0 4px 0 #08475f; }
.dna-play [hidden] { display: none !important; }
.dna-play__heading { max-width: 850px; margin: 0 auto 32px; text-align: center; }
.dna-play__heading p { margin: 0 0 18px; }
.dna-play__activity { margin-top: 24px; padding: clamp(20px, 3.5vw, 36px); border: 1px solid #c8dfe5; border-radius: 26px; background: #fff; box-shadow: 0 12px 35px -26px #30687945; min-width: 0; }
.dna-play h3 { margin: 0; font-size: clamp(20px, 2.4vw, 25px); line-height: 1.55; font-weight: 600; }
.dna-play__activity-head { display: flex; flex-wrap: wrap; gap: 10px 18px; align-items: center; justify-content: space-between; margin-bottom: 24px; }
.dna-play__number { display: inline-grid; place-items: center; margin-right: 8px; width: 34px; height: 34px; border-radius: 50%; background: #e8f5f7; color: var(--teal-deep); font: 600 14px var(--font-mono); vertical-align: middle; }
.dna-play .dna-play__progress { margin: 0; color: var(--teal-deep); font-size: 14px; font-weight: 600; }
.dna-example__scene { display: grid; grid-template-columns: minmax(0, .8fr) minmax(0, 1.2fr); gap: 28px; align-items: center; }
.dna-example figure { margin: 0; }
.dna-example img { display: block; width: 100%; aspect-ratio: 3 / 2; object-fit: cover; border-radius: 18px; }
.dna-example figcaption { margin-top: 8px; color: var(--body); font-size: 11px; line-height: 1.6; }
.dna-example figcaption a { color: var(--teal-deep); text-underline-offset: 3px; }
.dna-play .dna-play__sentence, .dna-play .dna-play__question { margin: 0 0 16px; padding: 20px; border-radius: 16px; background: #f4f8f8; font: 500 clamp(21px, 2.4vw, 27px)/1.85 var(--font-sans); color: var(--ink); overflow-wrap: break-word; }
.dna-play__sentence [data-dna-word] { border-radius: 4px; box-decoration-break: clone; -webkit-box-decoration-break: clone; transition: background-color .2s, color .2s; }
/* Adjectives stay neutral until discovered, including inside a found subject/object. */
.dna-play__sentence [data-dna-word] > [data-dna-word][data-found="false"] { color: var(--ink); background: #f4f8f8; }
.dna-play__sentence [data-found="true"] { text-decoration: underline; text-underline-offset: 5px; text-decoration-thickness: 2px; }
.dna-play [data-dna-word="subject"][data-found="true"], .dna-play [data-dna-word="object"][data-found="true"], .dna-play [data-dna-kind="subject"], .dna-play [data-dna-kind="object"] { color: var(--dna-green); background: #e6f5e9; }
.dna-play [data-dna-word="verb"][data-found="true"], .dna-play [data-dna-kind="verb"] { color: var(--dna-blue); background: #e9f2ff; }
.dna-play [data-dna-word="adjective"][data-found="true"], .dna-play [data-dna-kind="adjective"] { color: var(--dna-gold); background: #fbf2dd; }
.dna-play [data-dna-word="adverb"][data-found="true"], .dna-play [data-dna-kind="adverb"] { color: var(--dna-yellow); background: #fff0b9; }
.dna-play [data-dna-word="modifier"][data-found="true"], .dna-play [data-dna-kind="modifier"] { color: var(--dna-gold); background: #fbf2dd; outline: 1px solid #dfc68d; }
.dna-play .dna-play__invitation { margin: 0; font-size: 15px; }
.dna-play .dna-play__instruction { margin: 24px 0 14px; color: var(--ink); font-size: 17px; font-weight: 600; }
.dna-play__cards { display: grid; grid-template-columns: repeat(4, minmax(0, 1fr)); gap: 14px; }
.dna-play button { font-family: var(--font-sans); cursor: pointer; -webkit-tap-highlight-color: transparent; }
.dna-play__card { --clue: var(--dna-green); min-width: 0; width: 100%; min-height: 100px; padding: 18px; text-align: left; color: var(--ink); background: #fff; border: 1.5px solid #b6d1c1; border-bottom: 4px solid #b6d1c1; border-radius: 16px; box-shadow: 0 5px 12px -8px #24564070; transition: transform .18s, box-shadow .18s; }
.dna-play__card[data-dna-clue="verb"] { --clue: var(--dna-blue); border-color: #b9cee4; }
.dna-play__card[data-dna-clue="modifier"] { --clue: var(--dna-gold); border-color: #d8c697; }
.dna-play__card strong { display: block; font-size: 19px; color: var(--clue); }
.dna-play__tap, .dna-play__found { display: block; margin-top: 9px; font-size: 14px; font-weight: 600; color: var(--teal-deep); }
.dna-play__card[aria-expanded="true"] { background: #f1f8f3; border-color: var(--clue); transform: translateY(2px); box-shadow: none; }
.dna-play__card[data-dna-clue="verb"][aria-expanded="true"] { background: #edf4fd; }
.dna-play__card[data-dna-clue="modifier"][aria-expanded="true"] { background: #fff9ec; }
.dna-play__explanations { display: grid; grid-template-columns: repeat(2, minmax(0, 1fr)); gap: 12px; margin-top: 16px; }
.dna-play__reveal { min-width: 0; padding: 16px; border: 1px solid #d3e2e5; border-radius: 16px; }
.dna-play__reveal h4 { margin: 0 0 12px; font-size: 17px; }
.dna-play .dna-play__chip { display: block; margin: 8px 0 0; padding: 10px 12px; border-radius: 9px; font-size: 15px; line-height: 1.65; overflow-wrap: break-word; }
.dna-play__chip b, .dna-play__chip span { display: block; }
.dna-play .dna-play__detail { font-size: 14px; margin: 12px 0 0; }
.dna-play__completion { margin-top: 20px; padding: 20px; border-radius: 16px; border: 1px solid #badde5; background: #edf9f9; }
.dna-play__completion h4 { margin: 0; font-size: 18px; }
.dna-play__completion p { margin: 12px 0 0; }
.dna-play .dna-play__core { font-size: clamp(18px, 2.5vw, 23px); font-weight: 600; color: var(--dna-green); }
.dna-play .dna-play__translation { color: var(--teal-deep); font-weight: 600; }
/* Three-step presentation: only the three sentence examples, not the guide/practice. */
.dna-example [data-dna-game] { margin-top: 28px; }
.dna-example .dna-step-label { display: block; margin-top: 8px; color: var(--teal-deep); font: 600 11px/1.6 var(--font-mono); letter-spacing: .12em; }
.dna-example .dna-step-heading { margin: 6px 0 14px; font-size: 18px; line-height: 1.6; color: var(--ink); }
.dna-example [data-dna-word="adverb"][data-found="true"], .dna-example [data-dna-kind="adverb"] { color: var(--dna-gold); background: #fbf2dd; }
.dna-example .dna-divider { color: #627681; font-weight: 400; text-decoration: none; }
.dna-example .dna-play__completion h4 { margin: 6px 0 18px; font-size: 23px; line-height: 1.5; }
.dna-play .dna-example .dna-meaning-label { margin: 18px 0 10px; font-size: 14px; line-height: 1.7; font-weight: 600; color: var(--ink); }
.dna-play .dna-example .dna-complete-english { margin: 0; padding: 18px; border: 1px solid #d3e4e5; border-radius: 12px; background: #fff; font-size: 22px; line-height: 2; color: var(--ink); overflow-wrap: anywhere; }
.dna-example .dna-complete-english [data-dna-kind] { padding: 2px 4px; border-radius: 4px; box-decoration-break: clone; -webkit-box-decoration-break: clone; }
.dna-example .dna-meaning-chunks { display: flex; flex-wrap: wrap; gap: 10px; }
.dna-example .dna-meaning-chunks > div { max-width: 100%; padding: 10px 13px; border-radius: 12px; font-size: 18px; line-height: 1.9; overflow-wrap: anywhere; }
.dna-example .dna-role-label { display: block; margin-bottom: 4px; font-size: 12px; line-height: 1.7; font-weight: 600; }
.dna-example .dna-meaning-chunks [data-dna-kind="adjective"] { padding: 2px 3px; border-radius: 4px; }
.dna-example .dna-natural-meaning { margin-top: 22px; padding-top: 4px; border-top: 1px solid #badde5; }
.dna-example .dna-natural-meaning .dna-play__translation { font-size: 19px; line-height: 1.9; margin-top: 0; }
.dna-play .dna-example .dna-takeaway { font-size: 15px; line-height: 1.8; }
.dna-example .dna-noscript-meaning { margin-top: 12px; }
.dna-play__reset { min-height: 48px; margin-top: 12px; padding: 10px 12px; border: 1px solid #bed7de; border-radius: 10px; background: #fff; color: var(--teal-deep); font-size: 15px; font-weight: 600; }
.dna-play__bridge { max-width: 800px; margin: 60px auto 30px; text-align: center; }
.dna-play__bridge h3 { font: 600 clamp(24px, 3vw, 32px)/1.5 var(--font-serif); margin-top: 12px; text-wrap: balance; }
.dna-play__bridge p { margin: 20px 0; }
.dna-play .dna-play__question { margin-top: 20px; }
.dna-play__options { padding: 0; margin: 0; min-width: 0; border: 0; display: grid; gap: 10px; }
.dna-play__options legend { margin-bottom: 12px; font-size: 16px; }
.dna-play__options button { min-height: 56px; padding: 14px 18px; display: flex; flex-wrap: wrap; gap: 8px; justify-content: space-between; align-items: center; text-align: left; background: #fff; border: 1.5px solid #b9d3dc; border-radius: 12px; color: var(--ink); font-size: 18px; }
.dna-play__options button[aria-pressed="true"] { border-color: var(--teal-deep); background: #eaf6f9; }
.dna-play__selected { color: var(--teal-deep); font-size: 14px; font-weight: 600; }
.dna-play__feedback { margin-top: 20px; padding: 24px; border-radius: 16px; background: #f3f9fa; border: 1px solid #cee2e7; }
.dna-play .dna-play__response { color: var(--teal-deep); font-weight: 600; }
.dna-play__breakdown span { padding: 3px; border-bottom: 2px solid currentColor; }
.dna-play__roles { display: grid; grid-template-columns: repeat(2, minmax(0, 1fr)); gap: 12px; }
.dna-play__roles > div { padding: 12px; min-width: 0; background: #fff; border-radius: 10px; }
.dna-play__roles dt { font-size: 14px; color: var(--body); }
.dna-play__roles dd { margin: 5px 0 0; font-size: 17px; font-weight: 600; }
.dna-play .dna-play__correct { padding: 14px; background: #fff; border-radius: 10px; }
.dna-play .dna-play__disclosure { font-size: 13px; line-height: 1.7; margin: 16px 0 0; }
.dna-play :is(button, summary, a):focus-visible, .dna-story a:focus-visible { outline: 3px solid var(--teal-deep); outline-offset: 5px; }
.dna-play details { padding: 12px 0; border-bottom: 1px solid #d4e5e9; }
.dna-play summary { cursor: pointer; min-height: 48px; }
@media (hover: hover) {
  .dna-play__card:hover { transform: translateY(-2px); box-shadow: 0 8px 18px -12px #0f6f8c80; }
  .dna-play__options button:hover { border-color: var(--teal-deep); background: #f0f8fa; }
  .dna-story__cta:hover { background: #09546d; }
}
@media (max-width: 700px) {
  .dna-story__layout, .dna-example__scene { grid-template-columns: minmax(0, 1fr); gap: 22px; }
  .dna-story__book { width: min(100%, 300px); justify-self: center; padding: 20px; box-sizing: border-box; }
  .dna-story h2, .dna-play__heading h2 { font-size: 27px; line-height: 1.45; }
  .dna-story p, .dna-play p { font-size: 16px; line-height: 1.75; }
  .dna-story__copy br, .dna-play__heading br { display: none; }
  .dna-story__cta { width: 100%; box-sizing: border-box; font-size: 16px; }
  .dna-play__heading { text-align: left; }
  .dna-play__cards { grid-template-columns: repeat(2, minmax(0, 1fr)); gap: 12px; }
  .dna-play__card { padding: 16px; min-height: 98px; }
  .dna-play .dna-play__sentence { padding: 16px; font-size: 22px; }
  .dna-play__explanations { grid-template-columns: minmax(0, 1fr); }
  .dna-play__bridge { text-align: left; margin-top: 40px; }
  .dna-play__feedback { padding: 16px; }
  .dna-example .dna-step-heading { font-size: 17px; }
  .dna-play .dna-example .dna-complete-english { padding: 14px; font-size: 19px; line-height: 2; }
  .dna-example .dna-meaning-chunks > div { font-size: 17px; padding: 10px 12px; }
  .dna-example .dna-natural-meaning .dna-play__translation { font-size: 18px; }
}
@media (max-width: 360px) {
  .dna-play__wrap { width: calc(100% - 24px); }
  .dna-play__activity { padding: 16px; border-radius: 20px; }
  .dna-play__card { padding: 12px; }
  .dna-play__card strong { font-size: 18px; }
  .dna-play__roles { grid-template-columns: minmax(0, 1fr); }
}
/* Introductory guide only; established story, examples and exam rules stay intact. */
.dna-guide { margin: 0 0 32px; }
.dna-play .dna-guide__invitation { color: var(--teal-deep); font-weight: 600; }
.dna-guide__pairs { display: grid; grid-template-columns: repeat(2, minmax(0, 1fr)); gap: 16px; align-items: start; }
.dna-guide__pair { display: grid; grid-template-columns: repeat(2, minmax(0, 1fr)); gap: 12px; padding: 16px; border: 1px solid #d6e3e6; border-radius: 24px; background: #f8fbfb; min-width: 0; }
.dna-guide__pair--core { border: 2px solid #b1d4cc; background: #ecf6f3; padding: 15px; }
.dna-play .dna-guide__pair-label { grid-column: 1 / -1; margin: 0 0 2px; min-height: 28px; color: var(--ink); font-size: 15px; font-weight: 600; line-height: 1.7; }
.dna-guide__item { min-width: 0; display: flex; flex-direction: column; }
.dna-guide__button { --guide-color: var(--dna-green); --guide-border: #a8cdb7; --guide-fill: #eef8f1; position: relative; display: flex; flex-direction: column; align-items: center; width: 100%; flex: 1; min-height: 300px; padding: 18px 12px; color: var(--ink); background: #fff; border: 1.5px solid var(--guide-border); border-bottom-width: 5px; border-radius: 20px; box-shadow: 0 7px 14px -10px #164e4b70; transition: transform .18s ease, box-shadow .18s ease, background-color .18s ease; }
.dna-guide__button[data-dna-guide-clue="verb"] { --guide-color: var(--dna-blue); --guide-border: #a6c3e1; --guide-fill: #edf5ff; }
.dna-guide__button[data-dna-guide-clue="modifier"] { --guide-color: var(--dna-gold); --guide-border: #d7c496; --guide-fill: #fff9eb; }
.dna-guide__number { position: absolute; top: 12px; left: 12px; display: grid; place-items: center; width: 32px; height: 32px; color: #fff; background: var(--guide-color); border-radius: 50%; font: 600 19px/1 var(--font-sans); }
.dna-guide__button img { display: block; width: 116px; height: 116px; object-fit: contain; margin: 0 0 10px; pointer-events: none; }
.dna-guide__button strong { display: grid; align-items: center; min-height: 66px; color: var(--guide-color); font-size: 21px; line-height: 1.5; text-wrap: balance; }
.dna-guide__subtitle { display: block; min-height: 44px; margin-top: 4px; font-size: 14px; line-height: 1.6; }
.dna-guide__tap, .dna-guide__found { display: flex; gap: 5px; justify-content: center; align-items: center; margin-top: 10px; min-height: 26px; font-size: 14px; font-weight: 600; color: var(--teal-deep); }
.dna-guide__tap svg { flex: 0 0 22px; }
.dna-guide__button[aria-expanded="true"] { border-color: var(--guide-color); background: var(--guide-fill); box-shadow: none; transform: translateY(2px); }
.dna-play .dna-guide__reveal { margin: 12px 0 0; padding: 14px; background: #fff; border: 1px solid #c9dfe0; border-radius: 12px; font-size: 15px; line-height: 1.75; }
.dna-play .dna-guide__note { margin: 20px 0; padding: 18px 22px; background: #fbf7ed; border-left: 3px solid #cfb76f; border-radius: 0 14px 14px 0; font-size: 16px; }
.dna-guide__completion { padding: 22px; border: 1px solid #b4d8cf; border-radius: 18px; background: #edf8f3; }
.dna-guide__completion p { margin: 0 0 12px; }
.dna-guide__completion a { display: inline-flex; align-items: center; min-height: 48px; color: var(--teal-deep); font-weight: 600; text-underline-offset: 5px; line-height: 1.75; }
.dna-play .dna-level-title { display: flex; align-items: center; flex-wrap: wrap; gap: 8px; font-size: 23px; scroll-margin-top: 110px; }
.dna-level-title span { display: inline-block; padding: 4px 11px; border: 1px solid #bdd8df; border-radius: 20px; font-size: 16px; color: var(--teal-deep); background: #eef7f9; }
.dna-play .dna-level-subtitle { margin: 8px 0 0; font-size: 16px; color: var(--body); }
@media (hover: hover) {
  .dna-guide__button:hover { transform: translateY(-3px); box-shadow: 0 10px 18px -11px #164e4b80; }
}
.dna-guide__button:active { transform: translateY(2px); box-shadow: none; }
@media (max-width: 1000px) {
  .dna-guide__pairs { grid-template-columns: minmax(0, 1fr); }
  .dna-guide__button { min-height: 275px; }
}
@media (max-width: 700px) {
  .dna-guide__pair { padding: 12px; gap: 10px; border-radius: 18px; }
  .dna-guide__pair--core { padding: 11px; }
  .dna-guide__button { padding: 14px 8px; min-height: 282px; border-radius: 16px; }
  .dna-guide__button img { width: 100px; height: 100px; margin-top: 10px; }
  .dna-guide__number { width: 28px; height: 28px; top: 9px; left: 9px; font-size: 17px; }
  .dna-guide__button strong { font-size: 18px; min-height: 81px; }
  .dna-guide__subtitle { min-height: 45px; font-size: 13px; }
  .dna-guide__tap, .dna-guide__found { font-size: 13px; gap: 3px; }
  .dna-guide__tap svg { width: 20px; flex-basis: 20px; }
  .dna-play .dna-guide__reveal { padding: 12px; font-size: 14px; }
  .dna-play .dna-guide__note { padding: 16px; font-size: 15px; }
  .dna-guide__completion { padding: 18px; }
  .dna-play .dna-level-title { font-size: 21px; }
}
@media (prefers-reduced-motion: reduce) {
  .dna-play *, .dna-play *::before, .dna-play *::after { animation: none !important; transition: none !important; scroll-behavior: auto !important; }
  .dna-play__card, .dna-play__card:hover, .dna-play__card[aria-expanded="true"] { transform: none; }
  .dna-guide__button, .dna-guide__button:hover, .dna-guide__button:active, .dna-guide__button[aria-expanded="true"] { transform: none; }
}