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.oral-prep{margin-bottom:44px;padding:26px;background:#fff;border:1px solid #c9d8ed;border-radius:16px;box-shadow:0 8px 28px #142e4306;scroll-margin-top:20px}.oral-intro h2{font-size:29px;margin:10px 0}.oral-intro p{font-size:15px;line-height:1.8;color:var(--muted)}.oral-format{padding:12px 14px;background:#f1f6ff;border-radius:8px;color:#244b79!important}.oral-tabs{display:grid;grid-template-columns:repeat(3,minmax(0,1fr));gap:9px;margin:21px 0 14px}.oral-tabs button{text-align:left;font-size:14px;line-height:1.6;padding:11px}.oral-tabs button span{display:block;font-size:11px;color:var(--muted)}.oral-tabs button.active{background:#eaf1ff;border-color:#7da3ec;color:#1646a7}.oral-controls{display:flex;align-items:center;flex-wrap:wrap;gap:14px;padding-bottom:19px;border-bottom:1px solid var(--line)}.oral-controls label{font-size:13px;display:flex;align-items:center;gap:6px}.oral-controls a{margin-left:auto;font-size:13px;color:var(--blue);text-decoration:none;min-height:44px;display:flex;align-items:center}.oral-topic-heading h3{font-family:Georgia,serif;font-size:25px;font-weight:400;margin:24px 0 8px}.oral-topic-heading p{color:var(--muted);font-size:12px;line-height:1.8}.oral-prompt{border-left:3px solid #b0c7ea;padding:7px 12px;margin:16px 0;background:#f8faff;font-size:14px;line-height:1.9}.oral-prompt summary{cursor:pointer;min-height:32px}.oral-keywords{display:flex;flex-wrap:wrap;gap:7px;margin:18px 0}.oral-keywords span{font-size:12px;color:#496179;background:#f1f5f9;border-radius:5px;padding:6px 9px}.oral-round{margin-top:28px}.oral-round h4{font-size:16px;margin:0 0 14px}.oral-round h4 span{font-size:11px;font-weight:400;color:var(--muted);display:block;margin-top:6px}.oral-turn{margin:12px 0;padding:15px 17px;border:1px solid var(--line);border-radius:10px;background:#fafcff}.oral-turn.speaker-b{background:#f4f8f5;border-color:#d9e5dd}.oral-turn-top{display:flex;align-items:center;gap:8px;font-size:12px;color:var(--muted);margin-bottom:6px}.oral-speaker{display:inline-grid;place-items:center;background:#245fe5;color:#fff;width:26px;height:26px;border-radius:7px;font-weight:700;font-size:14px}.speaker-b .oral-speaker{background:#347553}.oral-play{margin-left:auto;border:0;background:transparent;font-size:12px;color:var(--blue);min-height:36px;padding:5px 8px}.oral-en{font-family:Georgia,serif;font-size:18px;line-height:1.9;overflow-wrap:anywhere}.oral-zh{display:none;font-size:14px;line-height:1.85;color:var(--muted);margin:10px 0 0;border-top:1px dashed #d4dee8;padding-top:10px}.show-zh .oral-zh{display:block}.oral-extras,.oral-rescue{margin-top:33px}.oral-extras h3,.oral-rescue h3{font-size:19px;margin-bottom:7px}.oral-extra{border:1px solid var(--line);border-radius:8px;margin:10px 0;padding:13px 15px}.oral-extra summary{font-family:Georgia,serif;font-size:17px;line-height:1.6;cursor:pointer}.oral-extra[open] summary{margin-bottom:13px;color:var(--blue)}.oral-extra .oral-en{margin-top:9px}.oral-extra .oral-play{margin:10px 0 0}.oral-rescue{padding:17px;background:#fffaf0;border:1px solid #eedfba;border-radius:10px}.oral-note{font-size:13px;line-height:1.9;color:var(--muted);margin-top:25px}.oral-jump{display:block;margin-top:24px;font-size:13px;color:var(--blue);text-decoration:none;line-height:1.8}#textbook-start{scroll-margin-top:20px}@media(max-width:720px){.oral-prep{padding:18px 15px;margin-bottom:30px}.oral-intro h2{font-size:25px}.oral-tabs{gap:6px}.oral-tabs button{padding:9px 7px;font-size:12px}.oral-controls{gap:9px}.oral-controls a{font-size:12px}.oral-turn{padding:13px}.oral-en{font-size:18px}.oral-topic-heading h3{font-size:24px}.oral-extra{padding:12px}.oral-extra summary{font-size:16px}.oral-rescue{padding:13px}}

.oral-controls #oral-go-textbook{margin-left:auto;font-size:13px}.oral-prep{margin-bottom:0} .page-count{white-space:normal}