.oral-hero {
  position: relative;
  overflow: hidden;
  padding: clamp(2rem, 4vw, 3.25rem) 0;
  color: #fff;
  background: radial-gradient(circle at 86% 16%, rgba(255,215,94,.26), transparent 22rem), linear-gradient(135deg, #101f3d, #193f67 60%, #176d75);
}
.oral-hero .eyebrow { color: #82eee3; }
.oral-hero h1 { max-width: 880px; font-size: clamp(2.55rem, 6vw, 5rem); }
.oral-hero-copy { max-width: 700px; margin: 1rem 0 0; color: #dceaf4; font-size: clamp(1.05rem, 2vw, 1.25rem); }
.oral-meta { display: flex; flex-wrap: wrap; gap: .6rem; margin-top: 1.7rem; }
.oral-meta span { padding: .5rem .8rem; border: 1px solid rgba(255,255,255,.3); border-radius: 999px; background: rgba(255,255,255,.08); font-size: .88rem; font-weight: 800; }
.oral-nav { position: sticky; top: 74px; z-index: 7; border-bottom: 1px solid var(--line); background: rgba(255,255,255,.96); backdrop-filter: blur(12px); }
.oral-nav .shell { display: flex; gap: .35rem; padding-block: .65rem; overflow-x: auto; }
.oral-nav a { flex: 0 0 auto; padding: .55rem .8rem; border-radius: 9px; color: #40506b; font-size: .88rem; font-weight: 800; text-decoration: none; }
.oral-nav a:hover { color: var(--blue-dark); background: #edf2ff; }
.oral-section { scroll-margin-top: 145px; }
.oral-intro-grid, .oral-topic-grid, .oral-resource-grid { display: grid; grid-template-columns: repeat(2,minmax(0,1fr)); gap: 1rem; }
.oral-panel { padding: clamp(1.3rem, 3vw, 2rem); border: 1px solid var(--line); border-radius: var(--radius); background: #fff; box-shadow: 0 14px 40px rgba(35,51,84,.06); }
.oral-panel > :first-child { margin-top: 0; }
.oral-panel > :last-child { margin-bottom: 0; }
.oral-panel h2, .oral-panel h3 { margin: .2rem 0 .75rem; }
.oral-panel p, .oral-panel li { color: #44506a; }
.oral-panel ul { margin: .65rem 0 0; padding-left: 1.25rem; }
.oral-panel li + li { margin-top: .35rem; }
.oral-callout { border-color: #ffd980; background: linear-gradient(145deg,#fffdf5,#fff8dc); }
.oral-kicker { margin: 0 0 .55rem !important; color: #087d78 !important; font-size: .76rem; font-weight: 900; letter-spacing: .09em; text-transform: uppercase; }
.oral-section-heading { max-width: 760px; margin-bottom: 1.5rem; }
.oral-section-heading h2 { margin: .2rem 0 .6rem; font-size: clamp(1.9rem,4vw,3rem); }
.oral-section-heading p { margin: 0; color: var(--muted); }
.oral-steps { display: grid; grid-template-columns: repeat(3,minmax(0,1fr)); gap: 1rem; counter-reset: oral-step; }
.oral-step { position: relative; padding: 1.4rem 1.4rem 1.4rem 4.1rem; border: 1px solid var(--line); border-radius: 16px; background: #fff; }
.oral-step::before { counter-increment: oral-step; content: counter(oral-step); position: absolute; top: 1.25rem; left: 1.25rem; display: grid; width: 2rem; height: 2rem; place-items: center; border-radius: 50%; color: #fff; background: var(--blue); font-weight: 900; }
.oral-step h3 { margin: .15rem 0 .45rem; font-size: 1.08rem; }
.oral-step p { margin: 0; color: var(--muted); }
.oral-image-card { overflow: hidden; padding: 0; }
.oral-image-card img { display: block; width: 100%; height: auto; }
.oral-image-card figcaption { padding: .9rem 1rem; color: var(--muted); font-size: .88rem; }
.oral-course-tabs { display: grid; grid-template-columns: repeat(2,minmax(0,1fr)); gap: 1rem; }
.oral-course-card { padding: 1rem; border: 1px solid var(--line); border-radius: 16px; background: #fff; }
.oral-course-card h3 { margin: .1rem 0 .8rem; }
.oral-course-card img { display: block; width: 100%; border: 1px solid #e3e7ee; border-radius: 10px; }
.oral-topic { overflow: hidden; padding: 0; }
.oral-topic summary { display: flex; align-items: center; justify-content: space-between; gap: 1rem; padding: 1.25rem 1.4rem; cursor: pointer; font-size: 1.12rem; font-weight: 850; }
.oral-topic summary::after { content: "+"; color: var(--blue); font-size: 1.5rem; }
.oral-topic[open] summary::after { content: "−"; }
.oral-topic-body { padding: 0 1.4rem 1.35rem; border-top: 1px solid var(--line); }
.oral-topic-body h4 { margin: 1.1rem 0 .35rem; }
.oral-topic-visuals { display: grid; grid-template-columns: repeat(2,minmax(0,1fr)); gap: .7rem; margin-top: 1rem; }
.oral-topic-visuals img { width: 100%; height: 190px; border-radius: 12px; object-fit: cover; }
.oral-timer { display: grid; justify-items: center; text-align: center; background: linear-gradient(145deg,#f1fbfa,#fff); }
.oral-timer-display { margin: .6rem 0 1rem; color: #173a91; font-size: clamp(3rem,8vw,5rem); font-weight: 900; letter-spacing: -.05em; line-height: 1; font-variant-numeric: tabular-nums; }
.oral-timer-actions { display: flex; flex-wrap: wrap; justify-content: center; gap: .6rem; }
.oral-timer button { min-height: 44px; padding: .65rem 1rem; border: 0; border-radius: 10px; font: inherit; font-weight: 850; cursor: pointer; }
.oral-timer-start { color: #fff; background: var(--blue); }
.oral-timer-reset { color: var(--ink); background: #e8edf5; }
.oral-link-list { display: grid; gap: .65rem; margin-top: 1rem; }
.oral-link-list a { display: flex; justify-content: space-between; gap: 1rem; padding: .9rem 1rem; border: 1px solid var(--line); border-radius: 12px; color: var(--blue-dark); background: #fff; font-weight: 800; text-decoration: none; }
.oral-link-list a::after { content: "↗"; }
.oral-video { position: relative; width: 100%; margin-top: 1rem; overflow: hidden; border-radius: 14px; background: #101f3d; aspect-ratio: 16 / 9; }
.oral-video iframe { position: absolute; inset: 0; width: 100%; height: 100%; border: 0; }
.oral-footer-note { color: var(--muted); font-size: .88rem; }
.picture-steps { display: grid; grid-template-columns: repeat(4,minmax(0,1fr)); gap: 1rem; counter-reset: picture-step; }
.picture-step { position: relative; min-height: 220px; padding: 4.1rem 1.35rem 1.35rem; border: 1px solid var(--line); border-radius: 16px; background: #fff; box-shadow: 0 10px 28px rgba(35,51,84,.05); }
.picture-step::before { counter-increment: picture-step; content: counter(picture-step); position: absolute; top: 1.2rem; left: 1.3rem; display: grid; width: 2.15rem; height: 2.15rem; place-items: center; border-radius: 50%; color: #fff; background: linear-gradient(135deg,var(--blue),var(--aqua)); font-weight: 900; }
.picture-step h3 { margin: 0 0 .55rem; font-size: 1.08rem; }
.picture-step p { margin: 0; color: var(--muted); }
.picture-visual { margin: 1rem 0 0; overflow: hidden; border: 1px solid var(--line); border-radius: var(--radius); background: #fff; box-shadow: 0 14px 40px rgba(35,51,84,.06); }
.picture-visual img { display: block; width: 100%; height: auto; }
.picture-visual figcaption { padding: .9rem 1rem; color: var(--muted); font-size: .88rem; }
.oral-source-note { display: block; margin-top: .35rem; color: #536078; font-size: .76rem; font-weight: 850; letter-spacing: .04em; }
.picture-practice-grid { display: grid; grid-template-columns: repeat(2,minmax(0,1fr)); gap: 1rem; }
.picture-practice-card { display: flex; min-width: 0; flex-direction: column; overflow: hidden; border: 1px solid var(--line); border-radius: 18px; color: inherit; background: #fff; box-shadow: 0 12px 34px rgba(35,51,84,.07); text-decoration: none; transition: transform .18s ease, box-shadow .18s ease; }
.picture-practice-card:hover { transform: translateY(-3px); box-shadow: 0 18px 42px rgba(35,51,84,.13); }
.picture-practice-card img { display: block; width: 100%; height: 330px; object-fit: contain; background: #eef1f5; }
.picture-practice-card span { padding: .85rem 1rem; color: var(--blue-dark); font-weight: 850; }
.phrase-cloud { display: flex; flex-wrap: wrap; gap: .55rem; margin-top: 1rem; }
.phrase-cloud span { padding: .5rem .7rem; border: 1px solid #b8e7e3; border-radius: 999px; color: #075d59; background: #effbf9; font-size: .88rem; font-weight: 800; }
.discussion-dialogue { display: grid; gap: .55rem; margin-top: 1rem; }
.discussion-intro-grid { grid-template-columns: repeat(3,minmax(0,1fr)); align-items: stretch; }
.discussion-intro-gif { display: flex; min-width: 0; flex-direction: column; margin: 0; }
.discussion-intro-gif img { width: 100%; min-height: 0; flex: 1; object-fit: cover; }
.discussion-intro-gif figcaption { margin-top: auto; }
.discussion-dialogue p { margin: 0; padding: .75rem 1rem; border-radius: 13px; background: #f1f4fa; }
.discussion-dialogue p:nth-child(even) { margin-left: 2rem; background: #effbf9; }
.discussion-flow { display: grid; grid-template-columns: repeat(5,minmax(0,1fr)); gap: .7rem; counter-reset: discussion-step; }
.discussion-flow article { position: relative; min-height: 160px; padding: 3.8rem 1rem 1rem; border: 1px solid var(--line); border-radius: 16px; background: #fff; }
.discussion-flow article::before { counter-increment: discussion-step; content: counter(discussion-step); position: absolute; top: 1rem; left: 1rem; display: grid; width: 2rem; height: 2rem; place-items: center; border-radius: 50%; color: #fff; background: linear-gradient(135deg,var(--blue),var(--aqua)); font-weight: 900; }
.discussion-flow h3 { margin: 0 0 .45rem; font-size: 1rem; }
.discussion-flow p { margin: 0; color: var(--muted); font-size: .92rem; }
.discussion-media { display: grid; grid-template-columns: minmax(0,.7fr) minmax(0,1.3fr); gap: 1rem; margin-top: 1rem; }
.discussion-media .picture-visual { margin: 0; }
.discussion-phrase-grid { display: grid; grid-template-columns: repeat(2,minmax(0,1fr)); gap: 1rem; }
.discussion-phrase-grid .picture-visual { margin: 0; }
.discussion-example-grid { display: grid; grid-template-columns: repeat(3,minmax(0,1fr)); gap: 1rem; }
.discussion-example-grid .picture-practice-card img { height: 280px; }
.criteria-grid { display: grid; grid-template-columns: repeat(2,minmax(0,1fr)); gap: 1rem; }
.criteria-grid details { padding: 0; }
.criteria-grid summary { cursor: pointer; padding: 1.15rem 1.25rem; color: var(--blue-dark); font-weight: 850; }
.criteria-grid details > div { padding: 0 1.25rem 1.25rem; }
.criteria-grid details p, .criteria-grid details li { color: #44506a; }
@media (max-width: 820px) {
  .oral-nav { top: 126px; }
  .oral-intro-grid, .oral-topic-grid, .oral-resource-grid, .oral-course-tabs { grid-template-columns: 1fr; }
  .discussion-intro-grid { grid-template-columns: 1fr; }
  .oral-steps { grid-template-columns: 1fr; }
  .picture-steps { grid-template-columns: repeat(2,minmax(0,1fr)); }
  .picture-practice-card img { height: 260px; }
  .discussion-flow { grid-template-columns: repeat(2,minmax(0,1fr)); }
  .discussion-media, .discussion-phrase-grid, .criteria-grid { grid-template-columns: 1fr; }
  .discussion-example-grid { grid-template-columns: 1fr; }
}
@media (max-width: 520px) {
  .oral-nav { position: static; }
  .oral-section { scroll-margin-top: 1rem; }
  .oral-hero { padding: 2rem 0; }
  .picture-steps, .picture-practice-grid { grid-template-columns: 1fr; }
  .picture-practice-card img { height: auto; max-height: 420px; }
  .discussion-flow { grid-template-columns: 1fr; }
}
@media print {
  .site-header, .site-footer, .oral-nav, .oral-timer-actions { display: none; }
  .oral-hero { padding: 1.5rem 0; color: #000; background: none; }
  .oral-hero-copy, .oral-hero .eyebrow { color: #000; }
  .oral-panel, .oral-step { break-inside: avoid; box-shadow: none; }
}