:root{color-scheme:light;--paper:#f6f2e9;--panel:#eee8dc;--card:#fffdf8;--ink:#544a3f;--muted:#7c6e5c;--line:#e3dccf;--accent:#877153;--hover:#e6ddcd;--font:"LXGW WenKai","PingFang SC","Microsoft YaHei",sans-serif}
*{box-sizing:border-box}html,body{margin:0;min-height:100%;background:var(--paper);color:var(--ink);font-family:var(--font);font-size:17px;font-weight:500;-webkit-font-smoothing:antialiased}body{overscroll-behavior:none}button,input,textarea{font:inherit}button{cursor:pointer;color:inherit;-webkit-tap-highlight-color:transparent}button,input,textarea,a{outline-offset:4px}button:focus-visible,a:focus-visible{outline:2px solid var(--accent)}button:disabled{cursor:default}button{border:0;background:none}svg{width:21px;height:21px;fill:none;stroke:currentColor;stroke-width:1.6;stroke-linecap:round;stroke-linejoin:round;flex:none}.icon-library{position:absolute;width:0;height:0;overflow:hidden}[hidden]{display:none!important}.sr-only{position:absolute;width:1px;height:1px;padding:0;overflow:hidden;clip:rect(0,0,0,0);white-space:nowrap;border:0}
.app{height:var(--app-height,100dvh);width:100%;display:grid;grid-template-columns:minmax(0,1fr);grid-template-rows:auto minmax(0,1fr) auto;isolation:isolate}.topbar{height:calc(68px + env(safe-area-inset-top));padding:calc(10px + env(safe-area-inset-top)) max(20px,env(safe-area-inset-right)) 8px max(20px,env(safe-area-inset-left));display:flex;align-items:center;gap:13px;flex:none}.page-title{min-width:0;flex:1;font-size:18px;white-space:nowrap;overflow:hidden;text-overflow:ellipsis;max-width:none}.icon-button{width:40px;height:40px;display:inline-flex;align-items:center;justify-content:center;border-radius:12px;color:var(--muted);flex:none;transition:background .16s ease,color .16s ease}.icon-button:hover{background:var(--hover);color:var(--ink)}.quiet-button{display:inline-flex;align-items:center;justify-content:center;gap:8px;padding:9px 12px;border-radius:12px;color:var(--muted);font-size:15px}.quiet-button:hover{background:var(--hover);color:var(--ink)}#morning-button{margin-left:auto}
.conversation{overflow-y:auto;overflow-x:hidden;scrollbar-width:thin;scrollbar-color:#d7cebe transparent;scroll-behavior:auto;min-height:0;padding:0 26px 28px;scroll-padding-bottom:28px}.welcome{min-height:100%;max-width:660px;margin:auto;display:flex;flex-direction:column;align-items:center;justify-content:center;text-align:center;padding:32px 0 66px}.welcome-bear{width:144px;height:144px;object-fit:contain;mix-blend-mode:normal}.welcome h1{font-size:28px;font-weight:500;margin:21px 0 12px;letter-spacing:.03em}.welcome p{font-size:16px;color:var(--muted);margin:0;line-height:1.8}.suggestions{display:flex;gap:12px;margin-top:27px;flex-wrap:wrap;justify-content:center}.suggestions button{padding:10px 16px;border:1px solid var(--line);border-radius:13px;font-size:15px;color:#7f715e;transition:background .16s ease}.suggestions button:hover{background:var(--panel)}
.messages{max-width:760px;margin:0 auto;width:100%;padding-top:25px}.message{margin:0 0 30px;display:flex;gap:13px;align-items:flex-start}.message.user{justify-content:flex-end}.message-avatar{width:34px;height:34px;border-radius:50%;object-fit:contain;flex:none;margin-top:3px}.message-body{min-width:0;max-width:calc(100% - 47px);font-size:17px;line-height:1.85;overflow-wrap:anywhere}.message.user .message-body{max-width:85%;background:#eae2d3;padding:12px 18px;border-radius:19px 19px 5px 19px;white-space:pre-wrap}.message-label{font-size:13px;color:var(--muted);margin-bottom:5px}.message-content>:first-child{margin-top:0}.message-content>:last-child{margin-bottom:0}.message-content p{margin:0 0 15px}.message-content h1,.message-content h2,.message-content h3{font-size:1.14em;font-weight:500;margin:22px 0 10px}.message-content ul,.message-content ol{padding-left:1.4em;margin:12px 0}.message-content a{color:#826a49;text-underline-offset:4px}.message-content img,.user-image{display:block;max-width:100%;max-height:440px;object-fit:contain;border-radius:14px;margin:10px 0}.message-content pre{font-family:ui-monospace,monospace;font-size:13px;padding:14px 16px;background:var(--panel);border-radius:12px;overflow:auto;line-height:1.6;white-space:pre}.message-content code{font-family:ui-monospace,monospace;font-size:.86em}.message-content blockquote{margin:16px 0;padding:2px 15px;border-left:3px solid #c8b89f;color:#87765f}.message-content table{border-collapse:collapse;display:block;overflow-x:auto;font-size:15px;max-width:100%}.message-content td,.message-content th{border:1px solid var(--line);padding:9px 12px;text-align:left}.message-content hr{border:0;border-top:1px solid var(--line);margin:20px 0}.message-footer{font-size:13px;color:var(--muted);margin-top:9px}.retry-button{text-decoration:underline;text-underline-offset:3px;color:#826a49;padding:5px 0;font-size:14px}.thinking{display:flex;align-items:center;gap:5px;height:31px}.thinking i{width:5px;height:5px;border-radius:50%;background:#b2a28a;animation:thinking 1.3s ease-in-out infinite}.thinking i:nth-child(2){animation-delay:.16s}.thinking i:nth-child(3){animation-delay:.32s}@keyframes thinking{0%,70%,100%{opacity:.35;transform:translateY(0)}35%{opacity:1;transform:translateY(-3px)}}
.composer-area{width:100%;max-width:820px;margin:0 auto;padding:0 26px max(22px,env(safe-area-inset-bottom));background:var(--paper)}.composer{background:var(--card);border:1px solid var(--line);border-radius:23px;padding:6px;box-shadow:0 4px 18px #6c573d08}.composer:focus-within{border-color:#c4b49b}#chat-input{display:block;resize:none;width:100%;min-height:68px;max-height:185px;padding:16px 16px 10px;line-height:1.75;font-size:17px;outline:none;border:0;border-radius:17px;background:transparent;color:var(--ink);box-shadow:none}#chat-input::placeholder{color:#80715e;opacity:1}.composer-tools{display:flex;align-items:center;gap:8px;padding:1px 6px 3px}.composer-status{font-size:13px;color:var(--muted);margin-left:3px}.send-button{margin-left:auto;width:36px;height:36px;display:flex;align-items:center;justify-content:center;border-radius:12px;background:var(--accent);color:#fffdf8;transition:opacity .15s}.send-button:disabled{background:#e5dece;color:#b1a592}.send-button.is-stop::after{content:"";width:12px;height:12px;border-radius:3px;background:currentColor}.send-button.is-stop svg{display:none}.attachment-list{display:flex;gap:9px;overflow:auto;padding:0 0 10px;scrollbar-width:thin}.attachment-list:empty{padding:0}.attachment-chip{display:flex;align-items:center;gap:7px;max-width:230px;background:var(--panel);border-radius:13px;padding:9px 10px;font-size:13px;flex:none}.attachment-chip span{overflow:hidden;text-overflow:ellipsis;white-space:nowrap;max-width:155px}.attachment-chip button{padding:0;display:flex}.attachment-chip svg{width:16px;height:16px}.file-tag{display:flex;align-items:center;gap:7px;font-size:14px;color:#81725d;margin:9px 0 0;white-space:normal}.file-tag svg{width:17px;height:17px}
.sidebar-backdrop{position:fixed;inset:0;z-index:35;background:transparent;opacity:0;cursor:default;transition:opacity .22s ease}.sidebar{position:fixed;z-index:40;top:0;left:0;bottom:0;width:min(292px,85vw);padding:calc(18px + env(safe-area-inset-top)) 17px max(18px,env(safe-area-inset-bottom));display:flex;flex-direction:column;background:var(--panel);border-right:1px solid var(--line);transform:translate3d(-100%,0,0);transition:transform .24s cubic-bezier(.22,.68,.24,1);will-change:transform;visibility:hidden}.drawer-visible .sidebar{visibility:visible}.drawer-open .sidebar{transform:translate3d(0,0,0)}.drawer-open .sidebar-backdrop{opacity:1}.sidebar-heading{display:flex;align-items:center;gap:9px;padding:0 0 23px;font-size:20px}.sidebar-heading img{mix-blend-mode:normal}.sidebar-heading .icon-button{margin-left:auto}.new-chat{display:flex;align-items:center;justify-content:center;gap:10px;padding:12px 16px;border-radius:13px;background:#e1d6c3;font-size:16px}.new-chat:hover{background:#d9ccb7}.history-heading{font-size:13px;color:#9c8f7b;margin:28px 10px 11px}.chat-list{flex:1;overflow:auto;min-height:0;scrollbar-width:thin;scrollbar-color:#d0c4b1 transparent}.history-row{display:flex;align-items:center;border-radius:12px;margin-bottom:4px;min-height:45px}.history-row:hover,.history-row.active{background:#e3d9c8}.history-link{min-width:0;flex:1;text-align:left;padding:12px 11px;white-space:nowrap;overflow:hidden;text-overflow:ellipsis;font-size:15px}.history-delete{padding:9px;color:#a2937e;display:flex;opacity:0}.history-delete svg{width:16px;height:16px}.history-row:hover .history-delete,.history-delete:focus-visible{opacity:1}.history-empty{font-size:14px;color:var(--muted);padding:12px 10px;line-height:1.8}.sidebar-footer{border-top:1px solid #ded3bf;margin-top:15px;padding-top:10px}.footer-button{display:flex;align-items:center;gap:10px;width:100%;text-align:left;padding:11px 10px;border-radius:10px;font-size:14px;color:#80715e}.footer-button:hover{background:#e3d9c8}.footer-button svg{width:18px;height:18px}
.auth-screen{min-height:100dvh;display:flex;justify-content:center;align-items:center;padding:32px 28px}.login-card{width:100%;max-width:328px}.login-bear{display:block;width:126px;height:126px;object-fit:contain;margin:0 auto;mix-blend-mode:normal}.login-card h1{text-align:center;font-size:27px;font-weight:500;margin:20px 0 9px}.login-caption{text-align:center;color:var(--muted);font-size:16px;margin:0 0 37px}.login-card label{display:block;font-size:14px;color:#8e7e68;margin:18px 0 9px}.login-card input{display:block;width:100%;padding:14px 16px;border:1px solid var(--line);border-radius:13px;background:var(--card);color:var(--ink);font-size:17px;outline:none}.login-card input:focus{border-color:#b6a387}.login-card input[readonly]{background:var(--panel);color:#89785e}.login-card input::placeholder{color:#80715e}.primary-button{border:0;border-radius:13px;background:var(--accent);color:var(--card);font-size:16px;padding:13px 20px}.primary-button:hover{background:#8e785a}.primary-button:disabled{opacity:.55}.login-card .primary-button{width:100%;margin-top:5px}.form-error{font-size:14px;line-height:1.7;color:#a46d54;min-height:24px;margin:12px 0}
.small-dialog{border:1px solid var(--line);border-radius:23px;padding:24px;max-width:450px;width:calc(100% - 36px);background:var(--paper);color:var(--ink);box-shadow:0 12px 70px #59482c20;font:inherit;max-height:85dvh;overflow:auto}.small-dialog::backdrop{background:rgba(72,59,40,.22)}.small-dialog h2{font-weight:500;font-size:22px;margin:0 0 14px}.small-dialog p{color:var(--muted);font-size:16px;line-height:1.8}.dialog-heading{display:flex;align-items:center;justify-content:space-between;margin-bottom:14px}.dialog-heading h2{margin:0}.morning-body{white-space:pre-wrap;font:inherit;line-height:1.9;font-size:16px;margin:20px 0 25px}.morning-banner{font-family:monospace;line-height:1.15;font-size:14px;display:table;margin:12px auto 24px}.small-dialog>.primary-button{display:block;margin-left:auto}.dialog-actions{display:flex;justify-content:flex-end;gap:12px;margin-top:24px}.toast{position:fixed;bottom:max(175px,calc(env(safe-area-inset-bottom) + 160px));left:50%;transform:translateX(-50%);max-width:min(90%,420px);background:#7f6b50;color:#fffdf7;padding:12px 18px;border-radius:13px;font-size:14px;line-height:1.65;z-index:100;text-align:center;box-shadow:0 4px 25px #59482c15}
@media(max-width:640px){.topbar{height:calc(60px + env(safe-area-inset-top));padding:calc(8px + env(safe-area-inset-top)) 13px 8px;gap:7px}.conversation{padding:0 18px 22px}.welcome{padding-bottom:36px}.welcome-bear{width:127px;height:127px}.welcome h1{font-size:24px;margin-top:19px}.welcome p{font-size:15px}.suggestions{gap:10px;margin-top:23px}.suggestions button{font-size:14px;padding:9px 13px}.composer-area{padding:0 13px max(13px,env(safe-area-inset-bottom))}.composer{border-radius:21px}#chat-input{padding:15px 15px 9px;font-size:17px;min-height:66px}.message{gap:9px;margin-bottom:26px}.message-avatar{width:29px;height:29px}.message-body{max-width:calc(100% - 38px);font-size:17px}.message.user .message-body{padding:11px 15px;max-width:88%}.messages{padding-top:20px}.history-delete{opacity:.65}.login-card{max-width:306px}.small-dialog{padding:22px}}
@media(prefers-reduced-motion:reduce){*,*::before,*::after{animation:none!important;transition:none!important;scroll-behavior:auto!important}}

.topbar,.conversation,.composer-area{min-width:0}#chat-input{min-width:0}
.chat-active,.chat-active body{height:100%;overflow:hidden;overscroll-behavior:none}
.app{position:fixed;top:var(--app-top,0px);left:0;right:0}
.conversation{overscroll-behavior-y:contain;-webkit-overflow-scrolling:touch}
.keyboard-open .composer-area{padding-bottom:8px}
.keyboard-open #chat-input{min-height:52px;max-height:min(140px,calc(var(--app-height,100dvh)*.32));padding-top:12px;padding-bottom:8px}
.keyboard-open .welcome{padding:12px 0 18px}
.keyboard-open .welcome-bear{width:72px;height:72px}
.keyboard-open .welcome h1{font-size:20px;margin:12px 0 8px}
.keyboard-open .suggestions{display:none}