.tchat{z-index:3000;background:radial-gradient(1200px 600px at 50% -10%, #e6b86c1a, transparent 60%), var(--paper);color:var(--ink);font-family:var(--font-sans,"Inter", system-ui, sans-serif);grid-template-rows:auto 1fr auto;display:grid;position:fixed;inset:0}.tchat-top{border-bottom:1px solid var(--line);-webkit-backdrop-filter:blur(8px);backdrop-filter:blur(8px);background:#fbf7eeb8;align-items:center;gap:16px;padding:12px clamp(14px,3vw,26px);display:flex}.tchat-brand{color:var(--ink);align-items:center;gap:10px;text-decoration:none;display:flex}.tchat-brand img{width:30px;height:30px}.tchat-brand strong{letter-spacing:.02em;font-size:18px}.tchat-model{margin-left:4px}.tchat-select{appearance:none;border:1px solid var(--line-dark);background:var(--paper-warm);color:var(--ink);cursor:pointer;text-overflow:ellipsis;background-image:url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' width='12' height='12' viewBox='0 0 12 12'%3E%3Cpath d='M2 4l4 4 4-4' stroke='%236d625b' stroke-width='1.6' fill='none' stroke-linecap='round'/%3E%3C/svg%3E");background-position:right 12px center;background-repeat:no-repeat;border-radius:999px;max-width:46vw;padding:7px 34px 7px 14px;font-size:13px;font-weight:600}.tchat-agent-toggle{border:1px solid var(--line-dark);background:var(--paper-warm);color:var(--muted);cursor:pointer;border-radius:999px;align-items:center;gap:8px;padding:7px 14px;font-size:13px;font-weight:600;transition:all .14s;display:inline-flex}.tchat-agent-toggle .tchat-agent-dot{background:var(--line-dark);border-radius:50%;width:8px;height:8px;transition:all .14s}.tchat-agent-toggle.is-on{border-color:var(--ember);color:#6b4a1a;background:linear-gradient(#e6b86c2e,#e6b86c14)}.tchat-agent-toggle.is-on .tchat-agent-dot{background:var(--ember);box-shadow:0 0 0 3px #e6b86c40}.tchat-top-right{align-items:center;gap:14px;margin-left:auto;display:flex}.tchat-steps{flex-direction:column;gap:6px;margin-bottom:12px;display:flex}.tchat-step{border:1px solid var(--line);background:var(--paper-warm);border-radius:10px;overflow:hidden}.tchat-step>summary{cursor:pointer;color:var(--ink-soft);align-items:center;gap:8px;padding:8px 12px;font-size:13px;font-weight:600;list-style:none;display:flex}.tchat-step>summary::-webkit-details-marker{display:none}.tchat-step>summary code{color:var(--muted);background:var(--paper-deep);text-overflow:ellipsis;white-space:nowrap;border-radius:4px;max-width:55%;padding:1px 6px;font-family:ui-monospace,SF Mono,Menlo,monospace;font-size:11.5px;font-weight:500;overflow:hidden}.tchat-step-icon{background:var(--ember);border-radius:50%;flex:none;width:9px;height:9px;animation:1s ease-in-out infinite tchat-pulse}.tchat-step-icon.done{background:#4bbd84;animation:none}@keyframes tchat-pulse{50%{opacity:.35}}.tchat-step-out{border-top:1px solid var(--line);color:#e8e0d4;white-space:pre-wrap;overflow-wrap:anywhere;background:#211b1a;max-height:260px;margin:0;padding:10px 12px;font-family:ui-monospace,SF Mono,Menlo,monospace;font-size:12px;line-height:1.5;overflow:auto}.tchat-quota{color:var(--muted);text-align:right;font-size:12px;line-height:1.3}.tchat-quota b{color:var(--ink);font-variant-numeric:tabular-nums}.tchat-logout{border:1px solid var(--line-dark);color:var(--ink-soft);cursor:pointer;background:0 0;border-radius:999px;padding:7px 14px;font-size:13px;font-weight:600}.tchat-logout:hover{background:var(--paper-deep)}.tchat-scroll{overscroll-behavior:contain;overflow-y:auto}.tchat-thread{flex-direction:column;gap:22px;max-width:820px;margin:0 auto;padding:28px clamp(14px,4vw,24px) 40px;display:flex}.tchat-msg{align-items:flex-start;gap:12px;display:flex}.tchat-msg-avatar{border-radius:50%;flex:none;place-items:center;width:30px;height:30px;margin-top:2px;font-size:12px;font-weight:700;display:grid}.tchat-msg-user .tchat-msg-avatar{background:var(--ink);color:var(--paper)}.tchat-msg-assistant .tchat-msg-avatar{background:linear-gradient(135deg, var(--ember-light), var(--ember));color:#2a1e0e}.tchat-msg-body{flex:auto;min-width:0}.tchat-msg-role{letter-spacing:.04em;text-transform:uppercase;color:var(--muted);margin-bottom:4px;font-size:12px;font-weight:700}.tchat-msg-content{color:var(--ink);white-space:pre-wrap;overflow-wrap:anywhere;font-size:15.5px;line-height:1.7}.tchat-msg-content code{background:var(--paper-deep);border-radius:4px;padding:1px 5px;font-family:ui-monospace,SF Mono,Menlo,monospace;font-size:.9em}.tchat-md>:first-child{margin-top:0}.tchat-md>:last-child{margin-bottom:0}.tchat-md p{margin:0 0 12px}.tchat-md h1,.tchat-md h2,.tchat-md h3{font-family:var(--font-serif,Georgia, serif);margin:18px 0 10px;font-weight:600;line-height:1.25}.tchat-md h1{font-size:22px}.tchat-md h2{font-size:19px}.tchat-md h3{font-size:17px}.tchat-md ul,.tchat-md ol{margin:4px 0 12px;padding-left:24px}.tchat-md li,.tchat-md li>ul,.tchat-md li>ol{margin:4px 0}.tchat-md a{color:var(--peru-red-deep);text-underline-offset:2px;text-decoration:underline}.tchat-md strong{font-weight:700}.tchat-md blockquote{border-left:3px solid var(--ember);color:var(--ink-soft);margin:10px 0;padding:4px 0 4px 14px}.tchat-md hr{border:none;border-top:1px solid var(--line);margin:16px 0}.tchat-md pre{margin:12px 0}.tchat-msg-content pre{color:#f2eee6;background:#211b1a;border-radius:10px;margin:10px 0;padding:14px 16px;font-size:13px;line-height:1.55;overflow-x:auto}.tchat-msg-content pre code{color:inherit;background:0 0;padding:0}.tchat-cursor{vertical-align:text-bottom;background:var(--ember);width:7px;height:16px;margin-left:2px;animation:1s steps(2,end) infinite tchat-blink;display:inline-block}@keyframes tchat-blink{50%{opacity:0}}.tchat-empty{text-align:center;place-content:center;justify-items:center;gap:18px;min-height:100%;padding:40px 20px;display:grid}.tchat-empty img{width:56px;height:56px}.tchat-empty h1{font-family:var(--font-serif,Georgia, "Times New Roman", serif);margin:0;font-size:clamp(28px,5vw,40px);font-weight:400;line-height:1.05}.tchat-empty p{color:var(--muted);max-width:46ch;margin:0;font-size:15px}.tchat-suggestions{flex-wrap:wrap;justify-content:center;gap:10px;margin-top:6px;display:flex}.tchat-chip{border:1px solid var(--line-dark);background:var(--paper-warm);color:var(--ink-soft);cursor:pointer;border-radius:999px;padding:9px 15px;font-size:13.5px;transition:background .12s}.tchat-chip:hover{background:var(--paper-deep)}.tchat-composer{border-top:1px solid var(--line);-webkit-backdrop-filter:blur(8px);backdrop-filter:blur(8px);padding:14px clamp(14px, 4vw, 24px) calc(14px + env(safe-area-inset-bottom));background:#fbf7eed1}.tchat-composer-inner{border:1px solid var(--line-dark);background:var(--paper-warm);border-radius:18px;align-items:flex-end;gap:10px;max-width:820px;margin:0 auto;padding:8px 8px 8px 16px;display:flex;box-shadow:0 10px 30px #211b1a0f}.tchat-composer-inner:focus-within{border-color:var(--ember)}.tchat-input{resize:none;color:var(--ink);background:0 0;border:none;outline:none;flex:auto;max-height:200px;padding:8px 0;font-family:inherit;font-size:16px;line-height:1.5}.tchat-input::placeholder{color:var(--muted)}.tchat-send{background:var(--ink);width:40px;height:40px;color:var(--paper);cursor:pointer;border:none;border-radius:12px;flex:none;place-items:center;transition:opacity .12s,background .12s;display:grid}.tchat-send:disabled{opacity:.35;cursor:not-allowed}.tchat-send.is-stop{background:var(--peru-red)}.tchat-foot{text-align:center;max-width:820px;color:var(--muted);margin:8px auto 0;font-size:11.5px}.tchat-error{border:1px solid var(--peru-red);max-width:820px;color:var(--peru-red-deep);background:#c412300f;border-radius:10px;margin:0 auto 10px;padding:10px 14px;font-size:13.5px}.tchat-boot{z-index:3000;background:var(--paper);color:var(--muted);place-items:center;gap:12px;font-size:14px;display:grid;position:fixed;inset:0}.tchat-spinner{border:3px solid var(--line);border-top-color:var(--ember);border-radius:50%;width:26px;height:26px;animation:.8s linear infinite tchat-spin}@keyframes tchat-spin{to{transform:rotate(360deg)}}@media (max-width:640px){.tchat-quota{display:none}.tchat-select{max-width:40vw}}