:root{--desk: #d0d6dc;--sheet: #f7f8f6;--plate: #24303c;--ink: #1a2330;--quiet: #3a4656;--line: #314052;--press: #8e1d22;--press-text: #ffffff;--space-2: 8px;--space-3: 16px;--space-4: 24px;--space-5: 40px;--hit: 48px;--serif: "Iowan Old Style", "Palatino Linotype", "Songti SC", "SimSun", serif;color:var(--ink);background:var(--desk);font-family:Avenir Next,PingFang SC,Microsoft YaHei,sans-serif;font-weight:400;font-size:16px;line-height:1.5}*{box-sizing:border-box}body{margin:0;min-height:100vh;background:var(--desk)}button,input,textarea{font:inherit;color:inherit}button{cursor:pointer}p{margin:0}a{color:var(--ink)}:focus-visible{outline:2px solid var(--ink);outline-offset:2px}h1,h2,strong,.mark{font-weight:700}h1,.mark,.stage-title{font-family:var(--serif);letter-spacing:-.04em}h1{font-size:56px;line-height:1;margin:0;color:var(--sheet)}h2{font-size:28px;line-height:1.2;margin:0;font-family:var(--serif);letter-spacing:-.03em}.paper{background:var(--sheet);border-radius:8px}#app:has(.gate-paper){min-height:100vh;display:flex;align-items:center;justify-content:center}.gate-paper{width:min(440px,calc(100% - 48px));margin:var(--space-4)}.plate{text-align:center}.plate{background:var(--plate);color:var(--sheet);padding:32px 28px 24px;border-radius:8px 8px 0 0}.paper-body{padding:28px}.lede{max-width:36em;margin-bottom:var(--space-4);color:var(--quiet);text-wrap:pretty}.gate{margin-top:var(--space-4)}.gate .field,.gate .btn-primary{width:100%}.stack{display:flex;flex-direction:column;gap:var(--space-4)}.tight{display:flex;flex-direction:column;gap:var(--space-2)}.row{display:flex;flex-wrap:wrap;gap:var(--space-2);align-items:center}label{display:block}.field{width:min(100%,420px);min-height:var(--hit);padding:12px 14px;border:2px solid var(--line);border-radius:8px;background:var(--sheet)}textarea.field{width:100%;min-height:96px;resize:vertical}.btn{min-height:var(--hit);padding:0 18px;border-radius:8px;border:2px solid var(--line);background:var(--sheet)}label.btn{display:inline-flex;align-items:center}.btn:disabled{cursor:not-allowed;color:var(--quiet)}.btn-primary{background:var(--press);border-color:var(--press);color:var(--press-text);font-weight:700}.btn-primary:disabled{background:var(--sheet);border-color:var(--line);color:var(--quiet)}.choice{min-height:var(--hit);padding:0 4px;border:0;border-bottom:2px solid transparent;background:transparent;border-radius:0}.choice[aria-checked=true]{font-weight:700;border-bottom-color:var(--ink)}.app{display:grid;grid-template-columns:260px minmax(0,1fr);min-height:100vh;align-items:start}.rail{padding:28px 20px 40px}.mark{font-size:32px;line-height:1;margin:0 0 var(--space-4)}.rail-actions{margin-bottom:var(--space-4)}.sessions{display:flex;flex-direction:column;gap:var(--space-2)}.session{text-align:left;min-height:var(--hit);padding:8px 8px 8px 12px;border:0;border-left:3px solid transparent;background:transparent}.session[aria-current=true]{font-weight:700;border-left-color:var(--ink)}.delete-conversation{margin-top:var(--space-4)}.work-paper{min-height:calc(100vh - 32px);margin:16px 16px 16px 0;padding:28px;display:flex;flex-direction:column;align-items:center}.mount{background:var(--plate);color:var(--sheet);min-height:280px;padding:28px;border-radius:8px;display:flex;align-items:center;justify-content:center}.stage-title{font-size:32px;line-height:1.2;margin:0;color:var(--sheet);text-align:center;width:100%}.current,.thread,.composer{width:min(100%,760px)}.current{display:flex;flex-direction:column;align-items:stretch;gap:var(--space-2);margin-bottom:var(--space-5);text-align:center}.mount img,.shot img{display:block;max-width:min(100%,720px);max-height:52vh;width:auto;height:auto;border-radius:8px}.thread{display:flex;flex-direction:column;gap:var(--space-5);margin-bottom:var(--space-5)}.turn{display:flex;flex-direction:column;gap:var(--space-3);align-items:stretch}.step{display:flex;flex-direction:column;gap:var(--space-2)}.bubble{display:flex;flex-direction:column;gap:var(--space-2);max-width:min(100%,560px);padding:var(--space-3);border-radius:8px}.bubble-label{margin:0;font-weight:700}.bubble-mine{align-self:flex-end;background:#1a2330;color:#f7f8f6}.bubble-talk{align-self:flex-start;background:#24303c;color:#f7f8f6}.bubble-mine .bubble-label,.bubble-talk .bubble-label{color:#d5dbe3}.bubble-prompt{align-self:stretch;max-width:none;background:var(--sheet);color:var(--ink);border:2px solid var(--line);border-left-width:8px;border-left-color:var(--press)}.bubble-note{align-self:stretch;max-width:none;background:transparent;color:var(--ink);border:2px dashed var(--line)}.shot{display:flex;flex-direction:column;align-items:center;gap:var(--space-2)}.uploads{display:flex;flex-wrap:wrap;gap:var(--space-3);justify-content:center}.upload-card{display:flex;flex-direction:column;align-items:center;gap:var(--space-2)}.upload-card img{width:96px;height:96px;object-fit:cover;border-radius:8px}.settings-form{width:min(100%,420px)}select.field{width:100%}.meta{color:var(--quiet)}.reply{white-space:pre-wrap}a.btn{display:inline-flex;align-items:center;text-decoration:none}.composer{display:flex;flex-direction:column;align-items:stretch;gap:var(--space-3);padding-top:var(--space-4);border-top:2px solid var(--line)}.banner{max-width:40em;margin-bottom:var(--space-3);color:var(--ink)}@media(prefers-reduced-motion:no-preference){.arrive{animation:arrive .4s ease}}@keyframes arrive{0%{opacity:0}to{opacity:1}}@media(max-width:800px){.gate-paper{width:min(440px,calc(100% - 32px));margin:var(--space-3)}h1{font-size:44px}.app{grid-template-columns:1fr}.rail{padding:20px 16px 0}.work-paper{margin:16px;min-height:0}.sessions{max-height:220px;overflow:auto}}