:root{color-scheme:light;--bg:#f6f6f5;--paper:#fff;--ink:#242522;--muted:#777a74;--line:#e8e8e5;--soft:#efefed;--accent:#253b32;--danger:#a53d33;--safe-bottom:env(safe-area-inset-bottom,0px);font-family:-apple-system,BlinkMacSystemFont,"Segoe UI","PingFang SC","Microsoft YaHei",sans-serif;font-synthesis:none}
*{box-sizing:border-box}html,body{margin:0;padding:0;height:100%;overflow:hidden}body{background:var(--bg);color:var(--ink);font-size:15px;-webkit-font-smoothing:antialiased}button,input,textarea,select{font:inherit}button{color:inherit;cursor:pointer;-webkit-tap-highlight-color:transparent}button:disabled{cursor:default;opacity:.4}button:active:not(:disabled){transform:scale(.97)}button,input,textarea,select{-webkit-appearance:none}button:focus-visible,input:focus-visible,textarea:focus-visible,select:focus-visible{outline:2px solid #718d7e;outline-offset:3px}button{transition:background .14s,transform .14s}button[hidden],[hidden]{display:none!important}button{border:0}input,textarea{border-radius:12px}a{color:var(--accent)}.app{height:100dvh;height:var(--app-height,100dvh);max-width:1120px;margin:auto;display:flex;flex-direction:column;overflow:hidden;background:var(--bg)}.topbar{display:grid;grid-template-columns:44px minmax(0,1fr) 44px;align-items:center;gap:8px;flex:none;padding:calc(env(safe-area-inset-top,0px) + 10px) 16px 12px;border-bottom:1px solid var(--line);background:var(--bg)}.icon-button{width:44px;height:44px;display:inline-flex;align-items:center;justify-content:center;background:transparent;border-radius:12px;font-size:28px;line-height:1;flex:none}.icon-button:hover{background:var(--soft)}.menu-icon{display:block;width:19px;height:14px;border-top:1.7px solid currentColor;border-bottom:1.7px solid currentColor;position:relative}.menu-icon:after{content:"";position:absolute;width:13px;top:5px;left:0;border-top:1.7px solid currentColor}.project-button{background:transparent;display:flex;flex-direction:column;align-items:center;gap:5px;padding:4px;min-width:0}.project-button>span:first-child{font-size:15px;font-weight:600;max-width:100%;overflow:hidden;white-space:nowrap;text-overflow:ellipsis}.connection{display:flex;align-items:center;gap:5px;font-size:11px;color:var(--muted)}.connection i{width:5px;height:5px;border-radius:100%;background:#9b9e98}.connection.online i{background:#4c7b5c}.connection.offline i{background:#b77c41}.new-icon{font-size:29px;font-weight:300}.chat-main{flex:1;min-height:0;overflow-y:auto;overscroll-behavior-y:contain;scroll-behavior:smooth;position:relative;padding:0 20px 22px;scroll-padding-bottom:25px}.notice{max-width:760px;margin:14px auto 0;padding:11px 13px;border:1px solid #e7d7c0;border-radius:12px;background:#fcf8ef;color:#71522e;font-size:13px;line-height:1.55;display:flex;align-items:center;justify-content:space-between;gap:12px}.notice button{font-size:12px;background:none;text-decoration:underline;flex:none;padding:5px}.pair-view{max-width:430px;margin:clamp(30px,8vh,90px) auto 0;text-align:center}.brand-mark{width:62px;height:62px;display:flex;align-items:center;justify-content:center;border:1px solid #d3dbd6;border-radius:19px;background:#e8ede9;color:var(--accent);font-weight:500;font-size:28px;margin:0 auto 26px}.brand-mark.small{width:48px;height:48px;border-radius:16px;font-size:23px;margin-bottom:22px}.eyebrow{font-size:12px;color:var(--muted);margin:0 0 10px;letter-spacing:.08em}h1{font-size:25px;font-weight:600;line-height:1.35;letter-spacing:-.03em;margin:0 0 14px}.intro{line-height:1.8;font-size:14px}.muted{color:var(--muted)}.pair-form{text-align:left;margin-top:34px}.pair-form label,.field-label{font-size:12px;color:var(--muted);display:block;margin-bottom:10px}.pair-form input{width:100%;background:#fff;border:1px solid #d9dcd6;height:52px;padding:0 15px;font-size:16px;letter-spacing:.04em}.pair-form input::placeholder{letter-spacing:0;color:#898d84}.primary-button{display:flex;align-items:center;justify-content:center;gap:10px;background:var(--accent);color:#fff;font-size:15px;font-weight:500;min-height:50px;width:100%;border-radius:13px;margin-top:14px}.primary-button span{font-size:19px}.pair-note{font-size:11px;color:var(--muted);line-height:1.9;margin:22px 0}.inline-error{font-size:13px;color:var(--danger);line-height:1.5;margin:10px 0}.welcome{max-width:460px;text-align:center;margin:clamp(48px,15vh,160px) auto 0}.welcome h1{font-size:25px}.welcome p{font-size:14px;color:var(--muted);line-height:1.85}.text-button{padding:8px 0;color:var(--accent);font-size:13px;background:transparent}.text-button:hover{text-decoration:underline}.welcome .text-button{font-size:14px;margin-top:5px}.welcome .client-label{font-size:11px;margin-top:25px;color:#969990}.messages{max-width:760px;margin:0 auto}.message{padding:27px 0 2px;min-width:0}.message-heading{display:flex;align-items:center;gap:8px;font-size:11px;color:var(--muted);margin-bottom:9px}.message-heading strong{color:#555b52;font-size:12px;font-weight:500}.message.user{display:flex;align-items:flex-end;flex-direction:column;padding-top:25px}.message.user 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8px;text-align:center;line-height:1.5}.composer-hint:empty{display:none}.scroll-bottom{position:sticky;display:block;bottom:0;width:36px;height:36px;background:#fff;border:1px solid var(--line);border-radius:50%;margin:0 auto;box-shadow:0 3px 15px #28362112;color:#535b4f;font-size:20px}.drawer-backdrop{position:fixed;z-index:30;inset:0;background:#1d241c45;backdrop-filter:blur(2px)}.session-drawer{position:fixed;z-index:31;inset:0 auto 0 0;width:min(340px,89vw);background:#f5f5f3;padding:calc(12px + env(safe-area-inset-top,0px)) 18px calc(16px + var(--safe-bottom));display:flex;flex-direction:column;animation:drawer-in .18s ease-out;border-right:1px solid #e3e6dd}.drawer-heading{display:flex;align-items:center;justify-content:space-between;margin-bottom:21px}.drawer-heading strong{font-size:22px;font-weight:600;letter-spacing:-.03em}.drawer-heading>div>span{margin-left:10px;color:var(--muted);font-size:11px}.drawer-new{border:1px solid 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input{appearance:auto;-webkit-appearance:auto;margin-top:4px;accent-color:var(--accent);flex:none}.question-option small{display:block;color:var(--muted);font-size:11px;margin-top:3px}.question-custom{width:100%;border:1px solid #dfe5d5;background:#fff;font-size:16px;line-height:1.5;padding:10px;border-radius:9px;margin-top:7px}.question-section .field-label{margin-top:13px}.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 breathe{0%,100%{opacity:.45}50%{opacity:1}}@keyframes drawer-in{from{transform:translateX(-20px);opacity:.7}to{transform:translateX(0);opacity:1}}@media(min-width:760px){.topbar{padding-top:18px;padding-bottom:17px;padding-left:26px;padding-right:26px}.chat-main{padding-left:34px;padding-right:34px}.composer-area{padding-bottom:18px}.sheet{border-radius:24px;margin:auto;max-height:80dvh;border-bottom:1px solid #e2e6dc}.model-sheet{height:650px}.pair-view{margin-top:70px}.welcome{margin-top:17vh}.message.user .message-content{max-width:78%}}@media(max-width:359px){.topbar{padding-left:9px;padding-right:9px;gap:3px}.chat-main{padding-left:15px;padding-right:15px}.composer-area{padding-left:10px;padding-right:10px}.pair-view h1{font-size:23px}.context-details>div{grid-template-columns:76px minmax(0,1fr)}}@media(prefers-reduced-motion:reduce){*{animation:none!important;transition:none!important;scroll-behavior:auto!important}}