:root{font-family:ui-sans-serif,-apple-system,BlinkMacSystemFont,"PingFang SC","Microsoft YaHei",sans-serif;color:#19463d;background:#f2f8f5}*{box-sizing:border-box}body{margin:0}.app{height:100dvh;min-height:510px;display:flex;flex-direction:column;overflow:hidden}.top{min-height:82px;padding:14px clamp(14px,3vw,42px);display:flex;align-items:center;justify-content:space-between;background:linear-gradient(110deg,#195d4f,#2c8272);color:#fff;gap:12px;box-shadow:0 4px 24px #143c2b22;z-index:1}.top-title{display:flex;gap:12px;align-items:center}.seal{border-radius:15px;background:#ffffff24;border:1px solid #ffffff70;font-size:23px;width:45px;height:45px;display:grid;place-items:center;font-family:serif}.top h1{font-size:clamp(17px,2vw,23px);font-weight:700;margin:0}.top h1 span{font-weight:400;color:#dfefe6}.top p{margin:5px 0 0;color:#d9f5e9;font-size:12px}.top-actions{display:flex;align-items:center;gap:12px}.conn{border-radius:25px;background:#ffffff20;color:white;padding:7px 11px;font-size:12px}.group-btn{background:#fff;border:0;border-radius:12px;color:#216958;padding:10px 15px;font-weight:700;cursor:pointer;white-space:nowrap}.main{flex:1;min-height:0;display:grid;grid-template-columns:minmax(250px,39%) minmax(0,1fr);gap:0}.character{position:relative;overflow:hidden;background:linear-gradient(170deg,#cfe6d9,#f5faf3);border-right:1px solid #c4dfd1}.character::before{content:"";position:absolute;inset:0;background:radial-gradient(circle at 65% 10%,#ffffffaa,transparent 55%);z-index:1;pointer-events:none}.character img{width:100%;height:100%;object-fit:cover;object-position:center 38%;display:block}.character-head{position:absolute;top:22px;left:22px;z-index:2;background:#ffffffd9;padding:8px 12px;border-radius:999px;box-shadow:0 4px 16px #223b3320;font-size:13px}.dot{display:inline-block;width:8px;height:8px;background:#28b776;border-radius:50%;margin-right:7px}.character-footer{position:absolute;z-index:2;bottom:19px;left:20px;right:20px;display:grid;gap:8px;border-radius:16px;padding:16px 18px;background:#eaf9f3ed;box-shadow:0 6px 20px #263a3020}.character-footer strong{font-size:15px}.character-footer span{font-family:serif;color:#397364;font-size:13px}.chat{min-width:0;display:flex;flex-direction:column;background:linear-gradient(145deg,#fcfffd,#f0f8f4);position:relative}.chat-info{padding:14px 20px;display:flex;justify-content:space-between;gap:10px;align-items:center;border-bottom:1px solid #d9e7e0}.chat-info>div:first-child{display:flex;flex-direction:column;gap:5px}.chat-info strong{font-size:16px}.chat-info span{font-size:12px;color:#6d877c}.quota{background:#e4f3e8;border:1px solid #c0e2ce;padding:8px 13px;border-radius:22px;font-size:13px;white-space:nowrap;color:#287253}.scroll{overflow-y:auto;overscroll-behavior:contain;min-height:0;flex:1;padding:20px clamp(14px,2.2vw,34px);display:flex;flex-direction:column;gap:17px}.turn{display:flex;gap:10px;max-width:94%;align-items:flex-start}.turn.student{align-self:flex-end;flex-direction:row-reverse}.bubble-avatar{width:34px;height:34px;border-radius:50%;object-fit:cover;border:2px solid #dce9df;flex:none}.who{background:#cbece0;border:2px solid white;border-radius:50%;width:34px;height:34px;display:grid;place-items:center;color:#267a62;flex:none;font-weight:800}.bubble{max-width:100%;padding:13px 15px;white-space:pre-wrap;overflow-wrap:anywhere;line-height:1.8;font-size:14px;border-radius:16px 16px 16px 4px;background:#fff;border:1px solid #dceae0;box-shadow:0 4px 14px #264c390a}.student .bubble{background:#d6f3e3;border-color:#bce6ce;border-radius:16px 16px 4px 16px}.name{display:block;font-size:11px;font-weight:700;color:#39836c;margin:0 0 3px}.bubble-actions{display:flex;gap:10px;justify-content:flex-end;margin-top:8px}.listen{background:#f0f8f2;border:1px solid #cce8d6;border-radius:10px;font-size:12px;color:#267056;padding:6px 11px;cursor:pointer}.listen:disabled{opacity:.48;cursor:not-allowed}.hint{color:#648779;font-size:11px}.prompts{display:flex;align-items:center;gap:7px;flex-wrap:wrap;padding:12px 20px;border-top:1px solid #e3eee7}.prompts span{font-size:12px;color:#6b897b}.prompts button{cursor:pointer;border:1px solid #cbe5d7;background:#fff;color:#286750;border-radius:999px;padding:7px 11px;font-size:12px}.compose{display:flex;gap:9px;align-items:center;padding:0 18px}.round{border-radius:50%;height:47px;width:47px;flex:none;border:1px solid #cde4d8;background:#edf7f2;font-size:20px;cursor:pointer}.round.listening{background:#ffdddc;border-color:#f1ada9}.entry{flex:1;min-width:0;border:1px solid #d6e7da;border-radius:15px;background:#fff}.entry textarea{font-family:inherit;font-size:15px;line-height:1.45;padding:10px 13px;border:0;border-radius:15px;resize:none;width:100%;background:transparent;min-height:51px;max-height:115px}.entry textarea:focus{outline:2px solid #84c9aa}.send{background:#277e61;color:white;border:0;border-radius:14px;min-height:49px;padding:0 17px;font-weight:700;cursor:pointer;white-space:nowrap}.send:disabled{opacity:.5}.under{display:flex;justify-content:space-between;gap:10px;align-items:center;font-size:12px;color:#628274;padding:7px 22px 12px}.under span{line-height:1.4}.submit-link{background:transparent;border:0;color:#227b63;text-decoration:underline;font-size:13px;font-weight:700;white-space:nowrap;cursor:pointer}.bottom{flex:none;text-align:center;background:#e4efe9;color:#527869;font-size:11px;padding:7px 10px}.overlay[hidden]{display:none}.overlay{position:fixed;inset:0;z-index:20;display:grid;place-items:center;padding:15px}.shade{position:absolute;inset:0;background:#0c2c25a1;backdrop-filter:blur(4px)}.panel{position:relative;max-height:94dvh;overflow:auto;width:min(500px,100%);border-radius:23px;background:#fff;padding:29px;box-shadow:0 25px 70px #0f271e80}.panel h2{font-size:24px;margin:10px 0}.panel p{color:#597467;font-size:14px;line-height:1.8}.panel-cap{font-size:12px;font-weight:700;color:#25856d}.group-grid{display:grid;grid-template-columns:repeat(4,1fr);gap:9px;margin:23px 0}.group-grid button{border:1px solid #cfe5d7;background:#f7fcf8;border-radius:14px;padding:18px 4px;cursor:pointer;color:#2a5948;font-size:16px}.group-grid button.active{background:#247d62;color:white;border-color:#247d62}.enter{background:#247d62;color:white;border:0;border-radius:13px;width:100%;padding:14px;font-size:16px;font-weight:700;cursor:pointer}.enter:disabled{opacity:.6}.modal-hint{font-size:13px;min-height:25px;color:#4f7f68;padding-top:10px}.modal-hint.error{color:#b5463b}.close{position:absolute;right:15px;top:10px;border:0;background:transparent;font-size:28px;color:#536e61;cursor:pointer}.field{display:grid;gap:7px;margin:16px 0;color:#285946;font-weight:700;font-size:13px}.field textarea{border:1px solid #d0e5d8;border-radius:10px;resize:vertical;padding:11px;font-size:14px;font-family:inherit;line-height:1.6}.sr{position:absolute;clip:rect(0,0,0,0);width:1px;height:1px;overflow:hidden}@media(max-width:800px){.main{grid-template-columns:minmax(0,1fr);grid-template-rows:125px minmax(0,1fr)}.character{border-right:0;border-bottom:1px solid #c5e4d1}.character img{height:100%;width:100%;object-fit:cover;object-position:center 32%}.character-head{top:12px;left:14px;padding:6px 10px;font-size:11px}.character-footer{left:auto;right:15px;bottom:10px;padding:9px 12px;max-width:57%;background:#ffffffdb}.character-footer strong{font-size:11px}.character-footer span{font-size:10px}.chat-info{padding:10px 14px}.scroll{padding:12px 14px}.prompts{padding:9px 12px}.compose{padding:0 11px}.under{padding:6px 13px 9px}.bubble{font-size:14px}.top{padding:9px 12px;min-height:67px}.top h1{font-size:16px}.top p{display:none}.conn{display:none}.seal{width:38px;height:38px;font-size:20px}}@media(max-width:420px){.character-footer span{display:none}.top-title h1 span{display:none}.prompts span{display:none}.scroll{gap:12px}.bottom{font-size:10px}}