:root{--bg:#f7f7f5;--card:#ffffff;--ink:#1a1a1a;--ink-soft:#6b6b6b;--accent:#2563eb;--accent-soft:#eff4ff;--danger:#dc2626;--green:#16a34a;--border:#e5e5e0;--radius:14px}*{box-sizing:border-box}body,html{margin:0;padding:0;background:var(--bg);color:var(--ink);font-family:-apple-system,BlinkMacSystemFont,Segoe UI,Roboto,Helvetica,Arial,sans-serif;-webkit-font-smoothing:antialiased}button{font:inherit;cursor:pointer;border:none}.shell{max-width:760px;margin:0 auto;padding:24px 16px 48px;min-height:100vh;display:flex;flex-direction:column}.hero{text-align:center;margin:48px 0 32px}.hero h1{font-size:2rem;margin:0 0 8px;letter-spacing:-.02em}.hero p{color:var(--ink-soft);margin:0}.cats{display:grid;grid-gap:14px;gap:14px;margin-top:28px}@media (min-width:640px){.cats{grid-template-columns:repeat(3,1fr)}}.cat{background:var(--card);border:2px solid var(--border);border-radius:var(--radius);padding:20px 16px;text-align:left;transition:border-color .15s,transform .1s}.cat:hover{transform:translateY(-1px)}.cat.selected{border-color:var(--accent);background:var(--accent-soft)}.cat h3{margin:0 0 6px;font-size:1.05rem}.cat p{margin:0;font-size:.85rem;color:var(--ink-soft);line-height:1.4}.start-btn{margin:28px auto 0;display:block;background:var(--accent);color:#fff;padding:14px 44px;border-radius:999px;font-size:1.05rem;font-weight:600}.start-btn:disabled{background:#b9c4d8;cursor:default}.footnote{margin-top:auto;padding-top:40px;text-align:center;font-size:.75rem;color:var(--ink-soft)}.session-head{display:flex;align-items:center;justify-content:space-between;gap:12px;padding:8px 0 14px;position:-webkit-sticky;position:sticky;top:0;background:var(--bg);z-index:5;border-bottom:1px solid var(--border)}.session-head .cat-label{font-weight:600;font-size:.95rem}.head-actions{display:flex;gap:8px;align-items:center}.end-btn{background:var(--ink);color:#fff;padding:9px 16px;border-radius:999px;font-size:.85rem;font-weight:600;white-space:nowrap}.mute-btn{background:var(--card);border:1px solid var(--border);border-radius:999px;padding:8px 12px;font-size:.85rem}.chat{flex:1 1;display:flex;flex-direction:column;gap:12px;padding:18px 0 140px}.bubble{max-width:85%;padding:12px 16px;border-radius:var(--radius);line-height:1.5;font-size:.95rem;white-space:pre-wrap}.bubble.ai{background:var(--card);border:1px solid var(--border);align-self:flex-start;border-bottom-left-radius:4px}.bubble.user{background:var(--accent);color:#fff;align-self:flex-end;border-bottom-right-radius:4px}.bubble.case{border-left:3px solid var(--accent)}.bubble .tag{display:block;font-size:.7rem;font-weight:700;text-transform:uppercase;letter-spacing:.05em;color:var(--accent);margin-bottom:4px}.thinking{align-self:flex-start;color:var(--ink-soft);font-size:.85rem;padding:6px 2px}.thinking:after{content:"…";animation:blink 1.2s infinite}@keyframes blink{50%{opacity:.2}}.composer{position:fixed;bottom:0;left:0;right:0;background:linear-gradient(transparent,var(--bg) 25%);padding:20px 16px}.composer-inner{max-width:760px;margin:0 auto;background:var(--card);border:1px solid var(--border);border-radius:var(--radius);padding:10px;display:flex;gap:8px;align-items:flex-end;box-shadow:0 4px 20px rgba(0,0,0,.06)}.composer textarea{flex:1 1;border:none;resize:none;font:inherit;font-size:.95rem;outline:none;padding:8px;max-height:130px;background:transparent}.mic-btn{width:46px;height:46px;border-radius:50%;background:var(--accent);color:#fff;display:flex;align-items:center;justify-content:center;flex-shrink:0;font-size:1.15rem;transition:background .15s}.mic-btn.listening{background:var(--danger);animation:pulse 1.4s infinite}@keyframes pulse{0%{box-shadow:0 0 0 0 rgba(220,38,38,.45)}70%{box-shadow:0 0 0 14px rgba(220,38,38,0)}to{box-shadow:0 0 0 0 rgba(220,38,38,0)}}.send-btn{height:46px;padding:0 18px;border-radius:999px;background:var(--ink);color:#fff;font-weight:600;flex-shrink:0}.send-btn:disabled{background:#ccc;cursor:default}.listen-hint{font-size:.78rem;color:var(--danger);font-weight:600}.listen-hint,.novoice{text-align:center;padding-top:8px;max-width:760px;margin:0 auto}.novoice{font-size:.75rem;color:var(--ink-soft)}.fb-card{background:var(--card);border:1px solid var(--border);border-radius:var(--radius);padding:20px;margin-bottom:14px}.fb-card h3{margin:0 0 12px;font-size:1rem}.score-row{display:flex;justify-content:space-between;align-items:baseline;gap:16px;padding:10px 0;border-bottom:1px solid var(--border)}.score-row:last-child{border-bottom:none}.score-row .dim{font-weight:600;text-transform:capitalize;min-width:120px}.score-row .num{font-weight:700;font-size:1.1rem;color:var(--accent);min-width:44px;text-align:right}.score-row .comment{flex:1 1;font-size:.87rem;color:var(--ink-soft);line-height:1.45}.fb-list{margin:0;padding-left:20px;line-height:1.6;font-size:.92rem}.error-note{background:#fef2f2;border:1px solid #fecaca;color:var(--danger);border-radius:var(--radius);padding:12px 16px;font-size:.9rem;margin:10px 0}.center-load{text-align:center;color:var(--ink-soft);padding:60px 0}