:root{--logoi-serif: "EB Garamond", "Garamond", Georgia, serif;--logoi-mono: "IBM Plex Mono", "Cascadia Code", "Fira Mono", ui-monospace, monospace;--logoi-display: "GFS Didot", "EB Garamond", Georgia, serif;--chat-col: 46rem}.chat-app{height:100dvh;display:flex;flex-direction:column;background:var(--color-canvas)}.chat-topbar{flex:none;display:flex;align-items:center;justify-content:space-between;gap:1rem;padding:.55rem clamp(.9rem,3vw,1.6rem);border-bottom:1px solid var(--color-line-strong);background:var(--color-panel);box-shadow:0 1px 0 var(--plate-hi) inset}.chat-topbar .brand{font-family:var(--logoi-grc);font-weight:400;font-size:1rem;letter-spacing:.34em;text-indent:.34em;color:var(--color-ink);text-decoration:none;text-transform:uppercase;gap:.5rem}.chat-topbar .brand-mark{display:inline-grid;place-items:center;width:1.6rem;height:1.6rem;border:0;border-radius:50%;color:#3a2c10;background:var(--gold-leaf);box-shadow:0 0 0 1px var(--gold-edge),inset 0 1px 1px #fff4d68c,inset 0 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1.4rem;text-align:center}.chat-hero-kicker{display:inline-flex;align-items:center;gap:.55rem;font-family:var(--logoi-mono);font-size:.68rem;letter-spacing:.16em;text-transform:uppercase;color:var(--color-accent-warm-strong);margin:0 0 .9rem}.chat-hero-kicker:before,.chat-hero-kicker:after{content:"";width:1.5rem;height:1px;background:var(--color-accent-warm)}.chat-hero-title{font-family:var(--logoi-display);font-weight:500;font-size:clamp(1.5rem,2.6vw,2rem);letter-spacing:.14em;margin:0 0 .65rem;color:var(--color-ink)}.chat-hero-sub{font-family:var(--logoi-serif);font-size:1.05rem;line-height:1.66;color:var(--color-muted);max-width:52ch;margin:0 auto 1.1rem}.chat-hero-colophon{font-family:var(--logoi-mono);font-size:.68rem;letter-spacing:.04em;color:var(--color-muted);max-width:52ch;margin:0 auto 1.5rem;padding:.55rem 0;border-top:1px solid var(--color-line);border-bottom:1px solid var(--color-line)}.chat-suggestions{list-style:none;margin:0;padding:0;display:flex;flex-wrap:wrap;justify-content:center;gap:.45rem}.chat-suggestions button{font-family:var(--logoi-serif);font-style:italic;font-size:.94rem;letter-spacing:.005em;padding:.38rem .85rem;background:var(--color-panel-deep);border:1px solid var(--color-line);border-radius:999px;color:var(--color-muted);cursor:pointer;transition:border-color .12s ease,color .12s ease,background .12s ease}.chat-suggestions button:hover:not(:disabled){border-color:var(--color-accent-warm);color:var(--color-accent-warm-strong);background:var(--color-panel)}.chat-thread{width:min(var(--chat-col),94%);margin:0 auto;padding:1.4rem 0 1rem;display:flex;flex-direction:column;gap:1.6rem}.chat-user{display:flex;justify-content:flex-end}.chat-user p{margin:0;max-width:85%;padding:.7rem 1rem;background:var(--color-night);color:var(--color-night-ink);border-radius:14px 14px 4px;font-family:var(--logoi-serif);font-size:1.02rem;line-height:1.45;font-style:italic;text-align:left;box-shadow:0 8px 24px -16px #23211c99}.chat-assistant{display:flex;flex-direction:column;gap:.55rem}.chat-answer{font-family:var(--logoi-serif);font-size:17px;line-height:1.65;color:var(--color-ink);max-width:64ch}.chat-answer p{margin:0 0 .8rem}.chat-answer p:last-child{margin-bottom:0}.chat-answer blockquote,.chat-answer .passage-block{margin:.9rem 0;padding:.75rem 1.05rem;border:1px solid var(--color-line);border-left:3px solid var(--color-accent-warm);border-radius:3px 8px 8px 3px;background:var(--color-panel)}.chat-caret{display:inline-block;width:1px;height:1.05em;background:var(--color-ink);vertical-align:text-bottom;margin-left:2px;animation:chat-caret-blink 1.1s steps(2,start) infinite}@keyframes chat-caret-blink{to{visibility:hidden}}@media(prefers-reduced-motion:reduce){.chat-caret{animation:none}}.chat-error{margin:0;font-size:.88rem;color:var(--state-disputed)}.chat-tools{display:flex;flex-direction:column;gap:.5rem}.tool-drop{position:relative;border:1px solid var(--color-line-strong);border-radius:0;background:var(--color-panel);box-shadow:0 1px 0 var(--plate-hi) inset;font-size:.82rem}.tool-drop summary{list-style:none;display:flex;align-items:center;gap:.55rem;padding:.55rem .7rem;cursor:pointer;user-select:none;color:var(--color-muted);font-family:var(--logoi-serif);font-size:.92rem;line-height:1.35}.tool-drop summary::-webkit-details-marker{display:none}.tool-chevron{flex:none;width:1.15rem;height:1.15rem;display:inline-grid;place-items:center;border-radius:50%;background:var(--color-panel-deep);color:var(--color-accent-warm-strong);font-family:var(--logoi-mono);font-size:.72rem;position:relative}.tool-chevron:before{content:"⟲";line-height:1}.tool-drop[open] .tool-chevron:before{content:"‹"}.tool-name{flex:none;background:transparent;border:none;border-radius:0;padding:0;font-family:var(--logoi-display);font-size:.66rem;font-weight:500;letter-spacing:.12em;text-transform:uppercase;color:var(--color-accent-warm-strong)}.tool-summary{overflow:hidden;text-overflow:ellipsis;white-space:nowrap;min-width:0;flex:1;color:var(--color-muted);font-family:var(--logoi-mono);font-size:.72rem;letter-spacing:.01em}.tool-state{flex:none;width:.5rem;height:.5rem;border-radius:50%;background:var(--color-faint);transition:background .2s ease,box-shadow .2s ease}.tool-state.is-settled{background:var(--color-accent);box-shadow:0 0 8px #9c4a2e8c}.tool-detail{padding:.5rem .7rem .65rem;margin-left:1.7rem;border-top:.5px solid var(--color-line);display:flex;flex-direction:column;gap:.5rem}.tool-input{color:var(--color-muted);font-family:var(--logoi-mono);font-size:.68rem;overflow-wrap:anywhere;line-height:1.5}.tool-sources{display:flex;flex-wrap:wrap;gap:.35rem;align-items:center}.tool-sources:before{content:"collated →";font-family:var(--logoi-mono);font-size:.64rem;letter-spacing:.03em;color:var(--color-faint)}.source-chip{font-family:var(--logoi-mono);font-size:.66rem;letter-spacing:.03em;border:1px solid var(--color-accent);border-radius:0;padding:.08rem .45rem;color:var(--color-accent-strong);background:var(--color-canvas)}.receipt-link{display:inline-flex;align-items:center;gap:.35rem;align-self:flex-start;font-family:var(--logoi-mono);font-size:.7rem;letter-spacing:.04em;color:var(--color-accent-strong);border:1px solid var(--color-accent);border-radius:0;padding:.16rem .55rem;background:var(--color-canvas);text-decoration:none;transition:background .14s ease,color .14s ease,border-color .14s ease}.receipt-link:before{content:"⊕";font-size:.9em}.receipt-link:hover{background:var(--color-accent);color:var(--color-canvas);border-color:var(--color-accent-warm);text-decoration:none}.chat-dock{flex:none;width:min(var(--chat-col),94%);margin:0 auto;padding:.4rem 0 max(.7rem,env(safe-area-inset-bottom))}.chat-quota-wall{margin:0 0 .5rem;padding:.6rem .85rem;background:var(--color-amber-bg);border:.5px solid color-mix(in srgb,var(--state-pending) 40%,var(--color-line));border-radius:2px;font-size:.86rem;color:var(--color-ink)}.chat-composer{display:flex;align-items:flex-end;gap:.5rem;border:1.5px solid var(--color-line);border-radius:14px;background:var(--color-panel-strong);padding:.5rem .5rem .5rem 1rem;box-shadow:0 1px #ffffff80 inset,0 10px 30px -18px #2c211666;transition:border-color .12s ease,box-shadow .12s ease}.chat-composer:focus-within{border-color:var(--color-accent-warm);box-shadow:0 0 0 4px var(--color-accent-warm-soft)}.chat-composer textarea{flex:1;font-family:var(--logoi-serif);font-size:1.05rem;line-height:1.5;border:none;background:transparent;color:var(--color-ink);resize:none;max-height:9rem;padding:.35rem 0;outline:none}.chat-composer textarea::placeholder{color:var(--color-faint);font-style:italic}.chat-composer button{flex:none;display:inline-flex;align-items:center;font-family:var(--logoi-display);font-size:.82rem;font-weight:500;letter-spacing:.14em;text-transform:uppercase;padding:.62rem 1.25rem;border-radius:8px;border:0;background:var(--color-accent-warm);color:#fff6ec;cursor:pointer;transition:background .14s ease}.chat-composer button:hover:not(:disabled){background:var(--color-accent-warm-strong)}.chat-composer button:disabled,.chat-composer textarea:disabled,.chat-suggestions button:disabled{opacity:.45;cursor:not-allowed}.chat-microline{margin:.45rem 0 0;text-align:center;font-family:var(--logoi-mono);font-size:.68rem;color:var(--color-faint);letter-spacing:.01em}.chat-quota-meter{color:var(--color-accent)}.chat-footnote{flex:none;text-align:center;font-family:var(--logoi-mono);font-size:.68rem;color:var(--color-faint);padding:0 0 .5rem;letter-spacing:.01em}.chat-footnote a{color:var(--color-muted)}.chat-footnote a:hover{color:var(--color-accent)}.sr-only{position:absolute;width:1px;height:1px;padding:0;margin:-1px;overflow:hidden;clip:rect(0 0 0 0);white-space:nowrap;border:0}