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reasoning-list-in{0%{opacity:0;transform:translateY(4px)scale(.98)}}.reasoning-option{border-radius:var(--radius-sm);color:var(--ink);cursor:pointer;align-items:center;gap:11px;padding:9px 10px;display:flex}.reasoning-option.is-active{background:var(--surface-2)}.reasoning-option[aria-selected=true]{background:var(--accent-soft)}.reasoning-list:focus-visible .reasoning-option.is-active{box-shadow:inset 0 0 0 1px color-mix(in srgb, var(--accent) 55%, transparent)}.reasoning-option-text{flex-direction:column;flex:1;gap:1px;min-width:0;display:flex}.reasoning-option-label{font-size:14px;font-weight:500}.reasoning-option-hint{color:var(--muted);font-size:12.5px}.reasoning-check{color:var(--accent);flex-shrink:0}@media (max-width:520px){.reasoning-trigger span{display:none}.reasoning-list{width:min(284px,100vw - 32px)}}.chat-input button[type=submit]{background:linear-gradient(180deg, var(--accent-hover), var(--accent));width:36px;height:36px;color:var(--accent-contrast);box-shadow:0 1px 8px color-mix(in srgb, var(--accent) 30%, transparent);cursor:pointer;border:0;border-radius:11px;flex-shrink:0;place-items:center;transition:background .15s,box-shadow .15s,transform .15s;display:grid}.chat-input button[type=submit]:hover{background:var(--accent-hover);box-shadow:0 2px 12px color-mix(in srgb, var(--accent) 45%, transparent);transform:translateY(-1px)}.chat-input button[type=submit]:active{box-shadow:0 1px 4px color-mix(in srgb, var(--accent) 25%, transparent);transform:translateY(0)}.chat-input:has(textarea:placeholder-shown) button[type=submit]{opacity:.45;box-shadow:none}.chat-stop{border:1px solid var(--line);background:var(--surface-2);width:36px;height:36px;color:var(--ink);cursor:pointer;border-radius:11px;flex-shrink:0;place-items:center;display:grid}.chat-stop:hover{border-color:var(--line-strong)}.toast-region{z-index:50;pointer-events:none;flex-direction:column;gap:8px;width:min(360px,100vw - 32px);display:flex;position:fixed;top:16px;right:16px}.toast{background:var(--surface);border:1px solid var(--line-strong);border-left:3px solid var(--danger);border-radius:var(--radius);pointer-events:auto;align-items:flex-start;gap:10px;padding:12px 10px 12px 14px;animation:.18s ease-out toast-in;display:flex;box-shadow:0 1px 2px #040a0f66,0 16px 36px -12px #040a0fb3}@keyframes toast-in{0%{opacity:0;transform:translateY(-6px)}}.toast-icon{color:var(--danger);flex-shrink:0;margin-top:1px}.toast-body{flex:1;min-width:0}.toast-body strong{color:var(--ink);font-size:14px;font-weight:600;display:block}.toast-body p{color:var(--muted);margin-top:2px;font-size:13px;line-height:1.45}.toast-action{background:var(--surface-2);border:1px solid var(--line-strong);border-radius:var(--radius-sm);color:var(--ink);font:inherit;cursor:pointer;margin-top:8px;padding:5px 11px;font-size:13px;font-weight:500;transition:border-color .15s,background .15s}.toast-action:hover{border-color:var(--accent);background:var(--accent-soft)}.toast-close{border-radius:var(--radius-sm);width:24px;height:24px;color:var(--muted);cursor:pointer;background:0 0;border:0;flex-shrink:0;place-items:center;display:grid}.toast-close:hover{background:var(--surface-2);color:var(--ink)}.login-gate{text-align:center;max-width:40ch;color:var(--muted);margin:auto;padding:40px 32px}.login-gate button{border-radius:var(--radius-sm);background:var(--accent);color:var(--accent-contrast);cursor:pointer;border:0;margin-top:18px;padding:10px 32px;font-weight:500}@media (max-width:960px){.sources-panel{display:none}.sidebar{width:208px}.chat-main{padding:20px}}@media (max-width:640px){.sidebar{width:184px;padding:12px 8px}.chat-main{padding:14px}}