:root{color:#202020;font-synthesis:none;text-rendering:optimizelegibility;-webkit-font-smoothing:antialiased;-moz-osx-font-smoothing:grayscale;--color-muted:#737373;--color-border:#e7e7e7;--color-surface:#f4f4f4;--content-width:760px;background:#fff;font-family:-apple-system,BlinkMacSystemFont,Segoe UI,Apple SD Gothic Neo,Malgun Gothic,sans-serif}*{box-sizing:border-box}body{min-width:320px;margin:0}button,textarea,input{font:inherit}button,a,summary{-webkit-tap-highlight-color:transparent}button{color:inherit;cursor:pointer}button:disabled{cursor:default}button,textarea{border:0}button{background:0 0}a{color:inherit}button:focus-visible,a:focus-visible,summary:focus-visible{outline-offset:3px;outline:2px solid #555}button,summary{touch-action:manipulation}.sr-only{clip-path:inset(50%);white-space:nowrap;border:0;width:1px;height:1px;margin:-1px;padding:0;position:absolute;overflow:hidden}.skip-link{z-index:5;background:#fff;border:1px solid #202020;padding:12px;position:fixed;top:8px;left:8px;transform:translateY(-160%)}.skip-link:focus{transform:translateY(0)}.chat-app{top:var(--app-offset-top,0);height:var(--app-height,100dvh);background:#fff;flex-direction:column;display:flex;position:fixed;inset-inline:0;overflow:hidden}.chat-header{padding:calc(10px + env(safe-area-inset-top)) max(16px, env(safe-area-inset-right)) 10px max(16px, env(safe-area-inset-left));flex:none;justify-content:space-between;align-items:center;display:flex}.wordmark{letter-spacing:-.7px;font-size:20px;font-weight:700;line-height:1.4}.icon-button{border-radius:50%;flex:0 0 44px;justify-content:center;align-items:center;width:44px;height:44px;padding:0;display:inline-flex}.icon-button svg{width:25px;height:25px}.icon-button:hover{background:var(--color-surface)}.chat-body{overscroll-behavior-y:contain;scrollbar-gutter:stable both-edges;flex-direction:column;flex:1;min-height:0;display:flex;overflow-y:auto}.welcome{flex:1 0 auto;justify-content:center;align-items:center;padding:30px 12px 50px;display:flex}.welcome-content{text-align:center;width:100%}.welcome h1{letter-spacing:-1px;margin:0;font-size:28px;font-weight:650;line-height:1.4}.welcome p{color:var(--color-muted);word-break:keep-all;margin:20px 0 0;font-size:14px;line-height:1.6}.suggestions{justify-content:center;gap:8px;margin-top:36px;display:flex}.suggestions button{white-space:nowrap;border:1px solid #d9d9d9;border-radius:24px;min-height:44px;padding:0 16px;font-size:13px}.suggestions button:hover{background:var(--color-surface)}.composer-area{width:100%;max-width:calc(var(--content-width) + 24px);padding:8px max(12px, env(safe-area-inset-right)) max(12px, env(safe-area-inset-bottom)) max(12px, env(safe-area-inset-left));flex:none;margin-inline:auto}.composer{background:var(--color-surface);border:1px solid #0000;border-radius:24px;padding:16px 14px 10px}.composer:focus-within{border-color:#cecece}.composer textarea{width:100%;min-height:26px;max-height:min(160px, max(26px, calc(var(--app-height,100dvh) - 240px)));color:#202020;resize:none;background:0 0;outline:none;padding:0 4px;font-size:16px;line-height:26px;display:block;overflow-y:auto}.composer textarea::placeholder{color:#787878;opacity:1}.composer-actions{justify-content:flex-end;align-items:center;gap:12px;min-height:44px;margin-top:4px;display:flex}.composer-hint{color:var(--color-muted);flex-shrink:0;font-size:11px;display:none}.send-button{color:#fff;background:#202020;border-radius:50%;flex:0 0 44px;justify-content:center;align-items:center;width:44px;height:44px;padding:0;display:flex}.send-button:disabled{background:#c5c5c5}.send-button:hover:not(:disabled){background:#444}.preview-caption{color:var(--color-muted);text-align:center;word-break:keep-all;margin:10px 0 0;font-size:11px;line-height:1.5}.connection-retry{text-align:right}.connection-retry button{min-height:32px;color:var(--color-muted);text-underline-offset:3px;margin-bottom:4px;padding:4px 4px 4px 12px;font-size:12px;text-decoration:underline}.challenge-area{max-width:100%}.challenge-area>div:first-child{max-width:100%;overflow:hidden}.challenge-error{color:var(--color-muted);justify-content:space-between;align-items:center;gap:12px;font-size:12px;display:flex}.challenge-error .text-button{font-size:12px}.message-list{width:min(100%, var(--content-width));margin-inline:auto;padding:24px 16px 28px}.message-turn+.message-turn{margin-top:36px}.generation-notice{overflow-wrap:anywhere;margin-top:20px;font-size:15px;line-height:1.65}.generation-notice>p{margin:0 0 8px}.generation-detail{color:var(--color-muted);font-size:12px;line-height:1.65}.assistant-message p{white-space:pre-wrap}.user-message{background:#f0f0f0;border-radius:20px;width:fit-content;max-width:88%;margin-left:auto;padding:11px 15px}.user-message p{white-space:pre-wrap;overflow-wrap:anywhere;margin:0;font-size:16px;line-height:1.6}.text-button{text-underline-offset:4px;min-height:44px;padding:6px 0;font-size:15px;text-decoration:underline}.text-button:disabled{color:#aaa;cursor:default}.answer-sources{color:var(--color-muted);margin-top:12px;font-size:12px;line-height:1.65}.answer-sources summary{cursor:pointer;width:fit-content;min-height:44px;padding-block:12px}.answer-sources ul{margin:0;padding-left:20px}.answer-sources li+li{margin-top:8px}.answer-sources small{font-size:11px;display:block}.chat-menu{inset:var(--app-offset-top,0) auto auto 0;width:min(320px,100% - 56px);max-width:none;height:var(--app-height,100dvh);color:#202020;background:#fff;border:0;max-height:none;margin:0;padding:0;position:fixed}.chat-menu::backdrop{background:#00000073}.menu-content{min-height:100%;padding:env(safe-area-inset-top) 16px max(24px, env(safe-area-inset-bottom));flex-direction:column;display:flex}.menu-header{justify-content:space-between;align-items:center;min-height:76px;padding-left:4px;display:flex}.new-chat-button{border:1px solid var(--color-border);text-align:left;border-radius:12px;flex-shrink:0;align-items:center;gap:14px;min-height:52px;padding:12px 16px;font-size:16px;display:flex}.new-chat-button:hover{background:var(--color-surface)}.conversation-nav{border-top:1px solid var(--color-border);margin-top:20px;padding-top:22px}.conversation-nav h2{color:var(--color-muted);margin:0 4px 14px;font-size:12px;font-weight:400}.conversation-nav ul{margin:0;padding:0;list-style:none}.conversation-link{text-align:left;border-radius:10px;align-items:center;gap:14px;width:100%;min-height:48px;padding:12px;display:flex}.conversation-link svg{flex:0 0 22px;width:22px;height:22px}.conversation-link span{text-overflow:ellipsis;white-space:nowrap;font-size:15px;overflow:hidden}.conversation-link:hover,.conversation-link[aria-current]{background:#f7f7f7}.menu-footer{margin-top:auto;padding-top:48px}.service-details summary{cursor:pointer;align-items:center;gap:14px;min-height:44px;padding:6px 4px;font-size:16px;list-style:none;display:flex}.service-details summary::-webkit-details-marker{display:none}.service-details-content{padding:0 4px}.service-details-content>p{color:var(--color-muted);word-break:keep-all;font-size:13px;line-height:1.7}.session-notice{color:var(--color-muted);margin:0 0 0 42px;font-size:11px;line-height:1.6}.connection-row{padding-block:10px 16px}.status-title{margin:0;font-size:13px;font-weight:500;line-height:1.6}.status-description{color:var(--color-muted);margin:4px 0 0;font-size:12px;line-height:1.6}.connection-row>button{text-underline-offset:3px;min-height:44px;margin-top:6px;padding:8px 0;font-size:12px;text-decoration:underline}.connection-row>button:disabled{color:var(--color-muted)}@media (width>=768px){.chat-header{padding:16px 24px}.welcome h1{font-size:34px}.welcome p{font-size:16px}.suggestions{gap:10px}.suggestions button{padding-inline:20px;font-size:14px}.composer-area{padding-bottom:18px}.composer-actions{justify-content:space-between}.composer-hint{display:block}.message-list{padding-top:32px;padding-inline:12px}}@media (width<=359px){.suggestions{gap:6px}.suggestions button{padding-inline:10px;font-size:12px}.welcome p{font-size:13px}.preview-caption{font-size:10px}}@media (prefers-reduced-motion:reduce){*,:before,:after{scroll-behavior:auto!important;transition:none!important;animation:none!important}}