:root{--blue:#1a7dff;--ink:#0d1f4f;--muted:#697995;--line:#e3ebf6;--pale:#f5f7fb;--shadow:0 8px 28px #12326709;font-family:-apple-system,BlinkMacSystemFont,"PingFang TC","Microsoft JhengHei","Noto Sans",sans-serif;color:var(--ink);background:var(--pale);font-synthesis:none}*{box-sizing:border-box}body{margin:0}button,textarea,select{font:inherit}button{cursor:pointer}button:disabled{cursor:default;opacity:.55}button:focus-visible,textarea:focus-visible,select:focus-visible{outline:3px solid #88baff;outline-offset:3px}.shell{display:grid;grid-template-columns:250px minmax(0,1fr);height:100vh;height:100dvh;max-width:1680px;margin:auto;background:#fff}.sidebar{padding:30px 22px 20px;background:linear-gradient(160deg,#f4f8ff,#f8faff 68%);border-right:1px solid var(--line);display:flex;flex-direction:column;gap:24px}.brand{display:flex;align-items:center;gap:10px}.brand img{width:43px;height:43px;border-radius:11px}.brand strong{font-size:17px;letter-spacing:.3px}.brand small{display:block;font-size:8px;letter-spacing:1.3px;margin-top:4px;color:#3974c7}.primary{border:0;border-radius:12px;padding:13px 18px;background:var(--blue);color:#fff;box-shadow:0 5px 12px #1a7dff24;font-weight:600}.new-chat.primary{display:flex;align-items:center;gap:11px;text-align:left}.new-chat span{font-size:23px;font-weight:400}.nav-label{color:var(--muted);font-size:11px;letter-spacing:1px;margin-top:6px}.session-card{display:flex;gap:10px;align-items:center;padding:14px 10px;background:#eaf2ff;border:1px solid #dceaff;border-radius:12px;margin-top:-12px}.session-card strong{display:block;font-size:13px;max-width:150px;overflow:hidden;text-overflow:ellipsis;white-space:nowrap}.session-card small{font-size:10px;color:var(--muted)}.chat-symbol{font-size:25px;color:var(--blue)}.sidebar-bottom{margin-top:auto}.mini-mascot{display:flex;align-items:center;gap:8px;margin-bottom:28px}.mini-mascot img{width:69px}.mini-mascot p{font-size:13px;line-height:1.75;color:#4c6383}.help-button{border:0;background:none;color:var(--muted);padding:8px 0;font-size:12px}.help-button:hover{color:var(--blue)}.company{display:block;font-size:8px;color:#8b98aa;margin-top:17px;letter-spacing:.3px}main{min-width:0;display:flex;flex-direction:column;height:100%;overflow:hidden}.header{padding:22px 40px 20px;display:flex;align-items:center;justify-content:space-between;gap:8px;border-bottom:1px solid #edf2f8}.assistant-id{display:flex;align-items:center;gap:12px}.assistant-id img{width:52px;height:52px}.assistant-id h1{margin:0;font-size:20px;letter-spacing:.3px}.assistant-id h1 span{font-size:14px;font-weight:500;margin-left:6px}.assistant-id p{margin:5px 0 0;color:var(--muted);font-size:12px}.header-actions{display:flex;align-items:center;gap:10px}.preview-badge{display:flex;align-items:center;gap:6px;border:1px solid var(--line);padding:7px 11px;border-radius:8px;background:#f8faff;font-size:11px;color:#476583}.preview-badge i{background:var(--blue);width:5px;height:5px;border-radius:50%}.mobile-new,.mobile-help{display:none}.local-notice{text-align:center;font-size:11px;color:#5e7798;padding:10px 12px;background:#f8fbff;border-bottom:1px solid #edf3fb}.chat-scroll{flex:1;min-height:0;overflow-y:auto;padding:28px 40px;scrollbar-gutter:stable}#welcome{text-align:center;max-width:680px;margin:20px auto 28px}.eyebrow{font-size:10px;letter-spacing:2px;color:#8098b5}.hero-mascot{width:156px;display:block;margin:16px auto 8px;filter:drop-shadow(0 10px 15px #b8cce344)}h2{font-size:29px;font-weight:650;letter-spacing:.5px;margin:14px 0}#welcome p{line-height:1.9;font-size:14px;color:var(--muted);margin:0}.suggestions{display:flex;justify-content:center;gap:10px;margin:28px 0 6px}.suggestions button{display:flex;align-items:center;gap:22px;background:#fff;border:1px solid var(--line);border-radius:12px;color:#3f5778;padding:14px;font-size:12px;box-shadow:var(--shadow)}.suggestions button:hover{background:#f3f8ff;border-color:#93beff}.suggestions span{color:var(--blue)}#log{max-width:800px;margin:auto;display:flex;flex-direction:column;gap:24px}.message{display:flex;gap:10px;align-items:flex-start;min-width:0}.message.me{flex-direction:row-reverse;margin-left:40px}.avatar{width:34px;height:34px;flex-shrink:0}.user-avatar{background:#e5efff;border-radius:50%;color:#387de0;text-align:center;line-height:34px;font-size:16px}.message-body{max-width:86%;min-width:0}.message-label{color:#8a99b0;font-size:10px;margin:0 0 6px 3px}.message.me .message-label{text-align:right}.bubble{white-space:pre-wrap;overflow-wrap:anywhere;line-height:1.8;font-size:14px;padding:15px 18px;background:#f2f6fc;border-radius:4px 16px 16px 16px;color:#2b4263}.me .bubble{background:var(--blue);color:#fff;border-radius:16px 4px 16px 16px}.err .bubble{background:#fff6f4;color:#a64436;border:1px solid #f4d6cf}.loading .bubble{color:#7286a2}.retry{background:white;border:1px solid #e5b6ac;color:#a64436;border-radius:8px;padding:7px 12px;margin-top:10px;font-size:12px}.dots{display:inline-flex;gap:4px;margin-left:8px}.dots i{width:5px;height:5px;border-radius:50%;background:#83a9de;animation:pulse 1s infinite}.dots i:nth-child(2){animation-delay:.15s}.dots i:nth-child(3){animation-delay:.3s}@keyframes pulse{50%{opacity:.25;transform:translateY(-2px)}}.composer-area{padding:12px 40px 18px;background:linear-gradient(#ffffffc9,#fff 20%)}form{max-width:800px;margin:auto;border:1px solid #d9e5f6;border-radius:16px;box-shadow:0 5px 24px #173a6509;background:#fff;padding:15px 16px 11px}form:focus-within{border-color:#89b9ff;box-shadow:0 0 0 3px #1a7dff0c}textarea{border:0;outline:none!important;resize:none;display:block;width:100%;min-height:50px;max-height:140px;overflow-y:auto;color:var(--ink);font-size:14px;line-height:1.65;background:transparent;padding:0}textarea::placeholder{color:#94a2b8}.composer-toolbar{display:flex;align-items:center;justify-content:space-between;gap:10px;color:#94a2b8;font-size:11px}.composer-toolbar #count{margin-left:12px;font-size:10px}.send-button{width:38px;height:38px;background:var(--blue);border:0;color:#fff;border-radius:10px;font-size:25px;box-shadow:0 4px 10px #1a7dff28}.composer-foot{max-width:800px;margin:6px auto 0;display:flex;justify-content:space-between;align-items:center;color:#8494ac;font-size:10px}.composer-foot button{font-size:10px}.cloud-note{max-width:800px;margin:0 auto;font-size:10px;line-height:1.6;color:#96a1b1}.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}dialog{width:min(480px,calc(100% - 32px));border:1px solid var(--line);border-radius:20px;padding:24px;color:var(--ink);box-shadow:0 24px 80px #0d1f4f26}dialog::backdrop{background:#10274755}.dialog-head{display:flex;align-items:center;justify-content:space-between;gap:15px}.dialog-head h2{font-size:18px;margin:0}.dialog-head button{background:none;border:0;font-size:24px;color:var(--muted)}dialog p{font-size:13px;line-height:1.9;color:#64758d}dialog label{font-size:11px;display:block;margin-top:22px}dialog select{display:block;width:100%;padding:10px;margin:9px 0 20px;border:1px solid var(--line);border-radius:8px;background:#f8faff;color:var(--ink)}dialog .primary{width:100%}[hidden]{display:none!important}@media(max-width:760px){.shell{grid-template-columns:minmax(0,1fr)}.sidebar{display:none}.header{padding:12px 16px}.assistant-id{gap:8px}.assistant-id img{width:42px;height:42px}.assistant-id h1{font-size:17px}.assistant-id h1 span{font-size:11px;margin-left:3px}.assistant-id p{font-size:10px}.preview-badge{font-size:9px;padding:5px 7px}.preview-badge i{display:none}.header-actions{gap:7px}.mobile-new,.mobile-help{display:block;background:#f6f9ff;border:1px solid #dce7f7;color:var(--blue);border-radius:9px;width:30px;height:30px;font-size:21px;padding:0}.mobile-help{font-size:16px}.local-notice{font-size:9px;padding:8px 9px}.chat-scroll{padding:22px 16px;scrollbar-gutter:auto}#welcome{margin:10px auto 24px}.hero-mascot{width:132px;margin:15px auto 8px}h2{font-size:24px}#welcome p{font-size:12px}.suggestions{flex-direction:column;gap:9px;margin:23px auto 0;max-width:280px}.suggestions button{justify-content:space-between;padding:12px 15px}.composer-area{padding:10px 14px calc(12px + env(safe-area-inset-bottom))}form{padding:12px 12px 9px;border-radius:14px}textarea{font-size:16px;min-height:48px}.composer-foot{font-size:9px}.cloud-note{font-size:9px;line-height:1.5}.message{gap:7px}.message.me{margin-left:14px}.avatar{width:29px;height:29px}.user-avatar{line-height:29px;font-size:13px}.message-body{max-width:87%}.bubble{font-size:13px;padding:12px 13px}.message-label{font-size:9px}#log{gap:20px}}@media(max-width:350px){.header{padding:10px}.assistant-id img{width:36px;height:36px}.assistant-id h1{font-size:15px}.assistant-id p{font-size:9px}.header-actions{gap:5px}.mobile-help{display:none}.preview-badge{font-size:8px}.chat-scroll{padding:18px 12px}.hero-mascot{width:115px}.composer-area{padding-left:10px;padding-right:10px}.composer-foot{font-size:8px}}@media(prefers-reduced-motion:reduce){.dots i{animation:none}}