:root{font-family:"Microsoft YaHei","Noto Sans SC",sans-serif;color:#1e2724;background:#e9eeeb;--ink:#1e2724;--muted:#66716d;--line:#d6ddda;--paper:#fbfcfb;--green:#176b53;--deep:#0e4d3c;--mint:#e4f2ec;--rail:#18332b}*{box-sizing:border-box}body{margin:0;min-width:320px}button,input{font:inherit}button{cursor:pointer}button:focus-visible,input:focus-visible{outline:3px solid rgba(211,107,80,.45);outline-offset:3px}.shell{min-height:100vh;display:grid;grid-template-columns:250px 1fr;gap:18px;padding:18px}.rail{min-height:calc(100vh - 36px);padding:24px 18px;border-radius:14px;background:var(--rail);color:white;display:flex;flex-direction:column}.brand{display:flex;align-items:center;gap:12px}.brand-mark,.avatar{display:grid;place-items:center;background:var(--green);color:#fff}.brand-mark{width:42px;height:42px;border-radius:10px;background:#f2c4b7;color:#693221;font-size:20px}.brand strong,.brand span,.session span,.session strong,.session small{display:block}.brand strong{font:700 21px Georgia,serif}.brand span,.session span,.session small{font-size:12px;color:#b9cec6}.session{margin-top:auto;padding-top:18px;border-top:1px solid #315148}.session strong{margin:6px 0;font:600 13px ui-monospace,monospace}.workspace{min-width:0;max-height:calc(100vh - 36px);overflow:hidden;display:flex;flex-direction:column;border-radius:14px;background:var(--paper)}header{height:70px;flex:none;padding:0 28px;border-bottom:1px solid var(--line);display:flex;align-items:center;justify-content:space-between}header strong,header span{display:block}header span{margin-top:3px;font-size:11px;color:var(--muted)}.progress{font-size:12px;color:var(--muted)}#screen{overflow-y:auto;flex:1}.conversation{width:min(820px,calc(100% - 48px));margin:auto;padding:42px 0}.message{display:grid;grid-template-columns:34px minmax(0,1fr);gap:12px;margin-bottom:22px}.avatar{width:34px;height:34px;border-radius:9px}.bubble{max-width:70ch;padding:17px 19px;border:1px solid var(--line);border-radius:4px 14px 14px 14px;background:#fff;box-shadow:0 7px 20px rgba(31,48,42,.05)}.quiet .bubble{background:#f0f5f2}.speaker{display:block;margin-bottom:7px;color:var(--green);font-size:11px;font-weight:700}.bubble h1{margin:2px 0 12px;font:700 38px/1.2 Georgia,serif}.bubble h2{margin:0 0 10px;font:700 25px/1.2 Georgia,serif}.bubble p{margin:0;line-height:1.75}.bubble strong{color:var(--deep)}.stimulus{width:100%;aspect-ratio:4/3;object-fit:contain;margin-top:16px;border-radius:8px;background:#edf1ef}.placeholder{display:grid;place-content:center;text-align:center;color:var(--muted);border:1px dashed #aebbb6}.suggestion{display:flex;align-items:center;gap:9px;padding:15px 16px;border-radius:8px;background:#e2efe9;font-size:17px}.composer{position:sticky;bottom:-34px;padding:18px 0 0;border-top:1px solid var(--line);background:rgba(251,252,251,.97)}.scale{display:flex;justify-content:space-between;align-items:center;margin-bottom:10px;color:var(--muted);font-size:12px}.scale output{font:700 21px Georgia,serif;color:var(--deep)}input[type=range]{width:100%;accent-color:var(--green)}.actions{display:flex;justify-content:flex-end;gap:10px;margin-top:18px}.primary,.secondary,.choice{min-height:44px;padding:11px 16px;border-radius:8px}.primary{border:0;background:var(--green);color:#fff;font-weight:700}.primary:hover{background:var(--deep)}.primary:disabled{opacity:.45;cursor:not-allowed}.secondary,.choice{border:1px solid var(--line);background:#fff;color:var(--ink)}.choices,.likert{display:grid;gap:8px}.choices{grid-template-columns:repeat(2,1fr)}.likert{grid-template-columns:repeat(7,1fr)}.choice.selected{border-color:var(--green);background:var(--mint);color:var(--deep)}.question{margin:0 0 20px}.question p{margin:0 0 10px;line-height:1.65}.form-field{display:grid;gap:7px;margin:0 0 18px}.form-field input{min-height:44px;padding:10px 12px;border:1px solid var(--line);border-radius:8px}.thinking{display:flex;gap:10px;align-items:center;color:var(--muted);font-size:12px}.dots{display:inline-flex;gap:4px}.dots i{width:6px;height:6px;border-radius:50%;background:var(--green);animation:pulse 720ms ease-in-out infinite alternate}.dots i:nth-child(2){animation-delay:120ms}.dots i:nth-child(3){animation-delay:240ms}@keyframes pulse{from{opacity:.35;transform:translateY(1px)}to{opacity:1;transform:translateY(-2px)}}@media(max-width:760px){.shell{display:block;padding:0}.rail{min-height:auto;border-radius:0;padding:13px 16px}.session{display:none}.workspace{max-height:none;min-height:calc(100vh - 68px);border-radius:0}header{height:58px;padding:0 16px}.conversation{width:calc(100% - 28px);padding:24px 0}.bubble h1{font-size:30px}.likert{gap:4px}.likert .choice{padding:10px 0}}@media(prefers-reduced-motion:reduce){.dots i{animation:none;opacity:.75}}
.moral-stimulus{margin-top:16px;padding:24px;border:1px solid var(--line);border-radius:8px;background:#f7f9f8}.moral-stimulus>strong{display:block;margin-bottom:12px;color:var(--deep);font-size:15px}.moral-stimulus p{line-height:1.9}
img.stimulus{display:block;width:auto;max-width:100%;height:auto;aspect-ratio:auto;max-height:min(62vh,680px);object-fit:contain;margin:16px auto 0}
.stimulus.placeholder{width:100%;min-height:180px;aspect-ratio:auto;margin-top:16px}
.likert{grid-template-columns:repeat(var(--choice-count,7),minmax(0,1fr))}.likert.categorical .choice{min-width:0;min-height:66px;white-space:normal;overflow-wrap:anywhere}@media(max-width:760px){.likert.categorical{grid-template-columns:repeat(2,minmax(0,1fr));gap:8px}.likert.categorical .choice{min-height:56px;padding:10px 8px}}