:root{--teal:#14708e;--teal-ink:#0e5468;--amber:#b9791a;--amber-soft:#fff3d6;--teal-soft:#e8f4f8;--bg:#f4f1ea;--ink:#1f2421;--muted:#6b7280;--card:#fff;--line:#e7e3d8;--accent:var(--teal);--accent-ink:var(--teal-ink);--kid:var(--amber);--shadow:0 1px 2px #0000000a, 0 10px 30px #1f242112;--radius:18px}*{box-sizing:border-box}html,body{margin:0;padding:0}body{background:radial-gradient(1100px 540px at 50% -12%, #fbf9f3 0%, var(--bg) 62%);color:var(--ink);-webkit-font-smoothing:antialiased;min-height:100vh;font-family:ui-sans-serif,system-ui,-apple-system,Segoe UI,Roboto,Helvetica,Arial,sans-serif;line-height:1.55}.shell{max-width:880px;margin:0 auto;padding:56px 20px 80px}.masthead{text-align:center;margin-bottom:30px}.masthead .logo{width:auto;height:72px;margin:0 auto 14px;display:block}.masthead h1{letter-spacing:-.025em;margin:8px 0 10px;font-size:40px}.masthead p{color:var(--muted);max-width:560px;margin:0 auto;font-size:16.5px}.masthead 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5px;font-size:11.5px;font-weight:700}.convo .turn.owl .name{color:var(--teal)}.convo .turn.kid .name{color:var(--amber)}.convo .bubble{border-radius:var(--radius);box-shadow:var(--shadow);border:1px solid #0000;padding:12px 16px;font-size:15.5px}.convo .turn.owl .bubble{background:var(--teal-soft);border-color:#bfe0ec;border-bottom-left-radius:6px}.convo .turn.kid .bubble{background:var(--amber-soft);border-color:#f3dca0;border-bottom-right-radius:6px}.convo .bubble+.bubble{margin-top:7px}.empty-state{text-align:center;padding:26px 20px 8px}.empty-state img{width:100%;max-width:320px;height:auto;margin:0 auto 6px;display:block}.empty-state p{color:var(--muted);margin:0;font-size:14.5px}.composer{background:var(--card);border:1px solid var(--line);border-radius:var(--radius);box-shadow:var(--shadow);padding:20px}.composer-label{color:var(--ink);margin:2px 2px 10px;font-size:15px;font-weight:700;display:block}.composer textarea{border:1px solid 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100%);border-radius:999px;outline:none;width:100%;height:8px}.depth-slider:disabled{opacity:.6;cursor:default}.depth-slider::-webkit-slider-thumb{appearance:none;background:var(--teal);cursor:pointer;border:4px solid #fff;border-radius:50%;width:28px;height:28px;margin-top:-10px;transition:transform .1s;box-shadow:0 2px 8px #0e546859}.depth-slider::-webkit-slider-thumb:hover{transform:scale(1.08)}.depth-slider::-webkit-slider-runnable-track{background:0 0;border-radius:999px;height:8px}.depth-slider::-moz-range-thumb{background:var(--teal);cursor:pointer;border:4px solid #fff;border-radius:50%;width:28px;height:28px;box-shadow:0 2px 8px #0e546859}.depth-slider::-moz-range-track{background:var(--line);border-radius:999px;height:8px}.depth-slider::-moz-range-progress{background:var(--teal);border-radius:999px;height:8px}.depth-ends{color:var(--muted);justify-content:space-between;margin-top:9px;font-size:11.5px;display:flex}.depth-hint{color:var(--muted);margin:9px 2px 0;font-size:13px}.go-row{align-items:center;gap:14px;margin-top:18px;display:flex}.go{appearance:none;background:var(--accent);color:#fff;font:inherit;cursor:pointer;border:none;border-radius:12px;padding:13px 24px;font-size:16px;font-weight:700;transition:background .12s,transform 60ms}.go:hover:not(:disabled){background:var(--accent-ink)}.go:active:not(:disabled){transform:translateY(1px)}.go:disabled{cursor:default;background:#c5cdcf}.kbd-hint{color:var(--muted);font-size:12.5px}.stage{margin-top:26px}.stage-loading{background:var(--card);border:1px solid var(--line);border-radius:var(--radius);box-shadow:var(--shadow);align-items:center;gap:16px;padding:22px 24px;display:flex}.spinner{border:3px solid #e7e3d8;border-top-color:var(--accent);border-radius:50%;flex:none;width:26px;height:26px;animation:.8s linear infinite spin}@keyframes spin{to{transform:rotate(360deg)}}.loading-copy{flex-direction:column;gap:2px;display:flex}.loading-copy strong{font-size:15.5px}.loading-copy span{color:var(--muted);font-variant-numeric:tabular-nums;font-size:13.5px}.stage-error{border-radius:var(--radius);color:#8a3d13;background:#fdeee6;border:1px solid #e9b894;padding:20px 22px}.stage-error strong{margin-bottom:4px;font-size:16px;display:block}.stage-error p{margin:0 0 14px;font-size:14px}.result-bar{flex-wrap:wrap;justify-content:space-between;align-items:center;gap:10px;margin-bottom:12px;display:flex}.result-bar>span{color:var(--muted);font-size:14px;font-weight:600}.result-actions{flex-wrap:wrap;gap:8px;display:flex}.ghost{appearance:none;background:var(--card);border:1px solid var(--line);font:inherit;color:var(--ink);cursor:pointer;border-radius:10px;padding:8px 13px;font-size:13.5px;transition:border-color .12s,background .12s}.ghost:hover{background:#f4f1e8;border-color:#c9c4b6}.result-frame{border:1px solid var(--line);border-radius:var(--radius);width:100%;height:78vh;min-height:560px;box-shadow:var(--shadow);background:#fff}.accountbar{justify-content:flex-end;align-items:center;gap:12px;margin-bottom:8px;display:flex}.accountbar .who{color:var(--muted);font-size:13px}.signin{background:var(--card);border:1px solid var(--line);border-radius:var(--radius);box-shadow:var(--shadow);flex-direction:column;align-items:center;gap:14px;padding:28px 24px;display:flex}.signin-note{color:#8a3d13;text-align:center;margin:0;font-size:13.5px}.linkbtn{appearance:none;font:inherit;font-size:inherit;color:var(--accent);cursor:pointer;background:0 0;border:none;padding:0;text-decoration:underline}.saved-tag{color:var(--accent);font-weight:700}.share-link{color:var(--muted);word-break:break-all;margin:-4px 0 12px;font-size:13px}.share-link a{color:var(--accent)}.history{margin-top:40px}.history-title{letter-spacing:.05em;text-transform:uppercase;color:var(--muted);margin:0 2px 10px;font-size:12px;font-weight:700}.history-list{flex-direction:column;gap:8px;margin:0;padding:0;list-style:none;display:flex}.history-item{background:var(--card);border:1px solid var(--line);border-radius:12px;align-items:center;gap:6px;padding-right:8px;display:flex}.history-item:hover{border-color:#d8d2c4}.history-open{text-align:left;cursor:pointer;font:inherit;color:var(--ink);background:0 0;border:none;border-radius:12px;flex-direction:column;flex:1;gap:2px;padding:12px 14px;display:flex}.history-open:hover .history-topic{color:var(--teal)}.history-topic{font-size:14.5px;font-weight:600;transition:color .12s}.history-meta{color:var(--muted);font-size:12px}.history-del{cursor:pointer;width:30px;height:30px;color:var(--muted);background:0 0;border:none;border-radius:8px;flex:none;place-items:center;font-size:14px;line-height:1;transition:background .12s,color .12s;display:grid}.history-del:hover{color:#8a3d13;background:#fdeee6}.share-wrap{background:#f4f1ea;min-height:100vh}.share-frame{background:#fff;border:none;width:100%;height:100vh;display:block}.colophon{text-align:center;color:var(--muted);margin-top:48px;font-size:12.5px}@media (max-width:560px){.masthead h1{font-size:32px}.result-frame{height:70vh}}