:root{--ink: #15231f;--muted: #5a6b64;--accent: #1a6b5a;--accent-deep: #0e4338;--surface: #ffffff;--surface-soft: #f4f7f5;--line: rgba(21, 35, 31, .1);--warn: #6d4a1c;--error: #9b2c2c;--radius: 14px;--radius-sm: 10px;--shadow: 0 10px 30px rgba(21, 35, 31, .06);font-family:"Source Sans 3",system-ui,sans-serif;color:var(--ink);background:#e9efeb}*{box-sizing:border-box}html,body,#root{margin:0;height:100%;overflow:hidden}.app{position:relative;height:100%;display:grid;max-width:920px;margin:0 auto;overflow:hidden}.app-welcome{grid-template-rows:auto 1fr;overflow-y:auto;scrollbar-width:none}.app-welcome::-webkit-scrollbar{display:none}.app-chat{grid-template-rows:auto minmax(0,1fr) auto}.atmosphere{position:fixed;top:0;right:0;bottom:0;left:0;z-index:-1;background:radial-gradient(ellipse 70% 50% at 50% -10%,rgba(26,107,90,.16),transparent 60%),radial-gradient(ellipse 45% 35% at 100% 80%,rgba(109,74,28,.07),transparent 55%),linear-gradient(180deg,#f7faf8,#e9efeb 45%,#e3ebe6)}.topbar{padding:1.1rem 1.5rem .75rem}.brand-lockup{display:flex;flex-direction:column;gap:.1rem}.brand{margin:0;font-family:Literata,Georgia,serif;font-size:1.15rem;font-weight:700;letter-spacing:.01em;color:var(--accent-deep)}.brand-sub{margin:0;font-size:.85rem;color:var(--muted)}.welcome{display:flex;flex-direction:column;justify-content:center;align-items:stretch;gap:1.5rem;padding:1rem 1.5rem 2.5rem;max-width:640px;width:100%;margin:0 auto;min-height:0}.welcome-copy{text-align:left}.eyebrow{margin:0 0 .65rem;font-size:.8rem;font-weight:600;letter-spacing:.08em;text-transform:uppercase;color:var(--accent)}.welcome h1{margin:0 0 .85rem;font-family:Literata,Georgia,serif;font-size:clamp(2.4rem,6vw,3.4rem);font-weight:700;line-height:1.05;letter-spacing:-.02em;color:var(--accent-deep)}.lead{margin:0;max-width:34rem;font-size:1.05rem;line-height:1.55;color:var(--muted)}.composer{background:var(--surface);border:1px solid var(--line);border-radius:var(--radius);box-shadow:var(--shadow);padding:.85rem .95rem .75rem;display:grid;gap:.65rem}.composer-hero{animation:settle .42s ease-out}.composer textarea{width:100%;border:none;resize:none;background:transparent;font:inherit;line-height:1.5;color:var(--ink);padding:.25rem .15rem;min-height:4.5rem}.composer-docked textarea{min-height:3rem;max-height:8rem}.composer textarea:focus{outline:none}.composer textarea::placeholder{color:#8a9993}.composer-bar{display:flex;align-items:center;justify-content:space-between;gap:.75rem;border-top:1px solid var(--line);padding-top:.65rem}.composer-hint{font-size:.78rem;color:var(--muted)}button{-webkit-appearance:none;-moz-appearance:none;appearance:none;border:none;border-radius:var(--radius-sm);background:var(--accent);color:#f7fbf9;font:inherit;font-weight:600;padding:.65rem 1.15rem;cursor:pointer;transition:background .14s ease,transform .14s ease}button:hover:not(:disabled){background:var(--accent-deep)}button:active:not(:disabled){transform:translateY(1px)}button:disabled{opacity:.55;cursor:not-allowed}.thread{min-height:0;overflow-y:auto;overscroll-behavior:contain;padding:.5rem 1.5rem 1.25rem;display:flex;flex-direction:column;gap:1.35rem;scrollbar-width:none}.thread::-webkit-scrollbar{display:none}.turn{max-width:42rem;animation:settle .22s ease-out}.turn-user{align-self:flex-end;background:var(--accent-deep);color:#f4faf7;border-radius:var(--radius);padding:.9rem 1.05rem}.turn-assistant{align-self:stretch;padding:.15rem .1rem}.turn-label{font-size:.75rem;font-weight:700;letter-spacing:.06em;text-transform:uppercase;margin-bottom:.4rem;color:var(--muted)}.turn-user .turn-label{color:#f4faf7b8}.turn-text{white-space:pre-wrap;line-height:1.55}.turn-pending .pending{display:inline-flex;align-items:center;gap:.45rem;color:var(--muted)}.dot{width:.35rem;height:.35rem;border-radius:50%;background:var(--accent);opacity:.55;animation:pulse 1.1s ease-in-out infinite}.dot:nth-child(2){animation-delay:.15s}.dot:nth-child(3){animation-delay:.3s}.markdown{line-height:1.6;font-size:1.02rem}.markdown-streaming .caret{display:inline-block;width:.45rem;height:1.05em;margin-left:.12rem;vertical-align:text-bottom;background:var(--accent);animation:blink 1s steps(1) infinite}@keyframes blink{0%,45%{opacity:1}50%,to{opacity:0}}.markdown>*:first-child{margin-top:0}.markdown>*:last-child{margin-bottom:0}.markdown p{margin:.55rem 0}.sources{margin-top:1rem;padding:.9rem 1rem;background:var(--surface);border:1px solid var(--line);border-radius:var(--radius-sm)}.sources-label{margin:0 0 .65rem;font-size:.75rem;font-weight:700;letter-spacing:.06em;text-transform:uppercase;color:var(--muted)}.sources ul{list-style:none;margin:0;padding:0;display:grid;gap:.85rem}.source-title{display:flex;flex-direction:column;gap:.15rem}.path{margin-top:.2rem;font-size:.9rem;color:var(--muted)}.snippet{margin:.35rem 0 0;font-size:.88rem;color:var(--muted)}.sources a{display:inline-block;margin-top:.25rem;color:var(--accent);font-weight:600;text-decoration:none}.sources a:hover{text-decoration:underline}.dock{padding:.75rem 1.5rem 1.1rem;background:linear-gradient(180deg,transparent,rgba(233,239,235,.92) 28%,#e9efeb)}.disclaimer{margin:.7rem 0 0;font-size:.8rem;line-height:1.4;color:var(--warn)}.welcome-disclaimer{margin-top:.25rem}.error{margin:0;color:var(--error);font-size:.95rem}.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}@keyframes settle{0%{opacity:0;transform:translateY(8px)}to{opacity:1;transform:translateY(0)}}@keyframes pulse{0%,to{opacity:.3;transform:translateY(0)}50%{opacity:1;transform:translateY(-1px)}}@media (max-width: 640px){.topbar,.welcome,.thread,.dock{padding-left:1rem;padding-right:1rem}.composer-bar{flex-direction:column;align-items:stretch}button{width:100%}.composer-hint{order:2;text-align:center}}