:root{font-family:ui-rounded,"PingFang SC","Microsoft YaHei",sans-serif;color:#334136;background:#e6eadd;font-synthesis:none}*{box-sizing:border-box}body{margin:0;min-height:100dvh}button,textarea{font:inherit}button,a{touch-action:manipulation}button{cursor:pointer;color:inherit}a{color:inherit;text-decoration:none}[hidden]{display:none!important}:focus-visible{outline:3px solid #7e9265;outline-offset:5px}header{position:absolute;z-index:4;top:0;left:0;width:100%;display:flex;align-items:center;justify-content:space-between;padding:25px 38px;font-size:12px}header nav{display:flex;gap:24px;align-items:center}header button{border:0;background:transparent;font-size:12px}.home{font-weight:700}main{min-height:100dvh;position:relative;overflow:hidden}.chapter-title{position:absolute;top:115px;left:5%;z-index:2;pointer-events:none}.chapter-title>span{font-size:11px;color:#667357}.chapter-title h1{font-size:31px;margin:12px 0;letter-spacing:-.04em}.chapter-title p{font-size:12px;line-height:1.8;max-width:23em;color:#61725a}#debate-world{position:absolute;inset:0}#debate-world canvas{width:100%;height:100%;display:block;touch-action:none}#world-error{position:absolute;top:35%;left:20%;width:60%;text-align:center;line-height:2;font-size:14px}.conversation{position:absolute;z-index:3;bottom:20px;left:50%;transform:translateX(-50%);width:min(680px,calc(100% - 36px));text-align:center;pointer-events:none}.conversation button,.conversation a{pointer-events:auto}.speech-card{display:block;margin:0 auto 16px;border:0;background:transparent;color:#29392d;padding:7px 24px 9px;max-width:640px;text-align:center;text-shadow:0 1px 7px #f5f6e8,0 0 18px #f7f6ed,0 0 5px #faf8eb;font-weight:700;line-height:1.65}#speaker-name{display:block;font-size:11px;font-weight:650;margin-bottom:9px}#speech-text{display:block;font-size:20px}#round-label{font-size:11px;color:#5d6d54;margin:0 0 8px}.conversation-controls{display:flex;justify-content:center;align-items:center;gap:13px;flex-wrap:wrap}.primary{display:inline-flex;align-items:center;justify-content:center;border:0;border-radius:100px;background:#466143;color:#fffcef;padding:13px 22px;font-size:13px;font-weight:700;min-height:46px}.quiet{border:1px solid #a8b6a06b;background:#f8f8edbd;border-radius:100px;padding:11px 17px;font-size:12px;min-height:43px}#mic-button{--voice-input-ink:#fdf8e9;--voice-input-accent:#456540}#status{font-size:11px;line-height:1.65;margin:12px 0 0;color:#59684f;min-height:1em}#heard{max-height:100px;overflow:auto}dialog{margin:auto;width:min(480px,calc(100% - 28px));max-height:85dvh;padding:27px;border:1px solid #d8dfc9;border-radius:22px;background:#f7f4e9;color:#334136}dialog::backdrop{background:#233a3155;backdrop-filter:blur(5px)}.dialog-head{display:flex;justify-content:space-between;align-items:center;margin-bottom:20px}.dialog-head h2{font-size:22px;margin:0}.dialog-head button{border:0;background:none;font-size:28px}label{font-size:12px;display:block;margin-bottom:10px}textarea{width:100%;min-height:110px;resize:vertical;border:1px solid #bdc8b1;background:#fffdf6;border-radius:12px;padding:13px;font-size:14px;line-height:1.8;color:#334136}#topic-suggestions{display:flex;gap:8px;flex-wrap:wrap;margin:12px 0 21px}#topic-suggestions button{background:transparent;border:1px solid #c5d0b9;border-radius:100px;padding:8px 11px;font-size:11px}#send-answer{margin-top:13px}.conversation .voice-input-status{max-width:100%}@media(max-width:767px){header{padding:21px 20px;font-size:10px}header nav{gap:15px}header button{font-size:10px}.chapter-title{top:89px;left:24px}.chapter-title h1{font-size:25px}.chapter-title p{max-width:23em;font-size:11px}.conversation{bottom:max(18px,env(safe-area-inset-bottom))}#speech-text{font-size:17px}.speech-card{padding:6px 8px 9px}.conversation-controls{gap:8px}.quiet{font-size:11px;padding:10px 13px}#round-label{font-size:10px}}@media(prefers-reduced-motion:reduce){*{scroll-behavior:auto!important}}

.speech-card { color:#fff; text-shadow:0 2px 3px #142219,0 3px 9px #142219e6,0 0 2px #fff9,0 0 9px #ffffff65; }
#answer-choices { display:flex; flex-wrap:wrap; justify-content:center; gap:8px; margin:12px auto 16px; max-height:28dvh; overflow:auto; pointer-events:auto; }
#answer-choices button { line-height:1.6; background:#f8f8edf2; }
.conversation { max-height:calc(100dvh - 185px); overflow-y:auto; }