:root{font-family:"Microsoft YaHei","PingFang SC",sans-serif;color:#283d38;background:#fbfcfa;font-size:14px;--green:#28604e;--muted:#7b8a84;--line:#e5eae5}
*{box-sizing:border-box}body{margin:0;display:flex;height:100dvh}button,textarea{font:inherit}button{cursor:pointer;border:0;border-radius:10px;padding:10px 16px;background:var(--green);color:white}button:disabled{cursor:default;opacity:.45}button:focus-visible,summary:focus-visible{outline:2px solid #6d9b87;outline-offset:3px}[hidden]{display:none!important}
aside{width:252px;flex-shrink:0;padding:28px 16px 18px;background:#eef2eb;display:flex;flex-direction:column;border-right:1px solid var(--line);min-height:0}.brand{display:flex;align-items:center;gap:12px;padding:0 9px 28px;font-size:17px;font-weight:600}.logo{display:grid;place-items:center;width:38px;height:38px;background:#2d5949;color:#fff;border-radius:12px;font-family:Georgia;font-size:25px}.new{background:white;color:var(--green);text-align:left;border:1px solid #d9e1d7;padding:12px 16px}.list-label{font-size:11px;color:var(--muted);margin:26px 12px 10px}nav{overflow:auto;flex:1;min-height:0}.chat-row{display:flex;align-items:center;border-radius:10px;margin:3px 0;min-width:0}.chat-row:hover,.chat-row.selected{background:#dfe7dc}.chat-open{display:block;background:none;color:#59685f;flex:1;min-width:0;white-space:nowrap;overflow:hidden;text-overflow:ellipsis;text-align:left;padding:12px 8px 12px 12px}.chat-row.selected .chat-open{color:#254c3d}.chat-more{flex-shrink:0;width:30px;padding:8px 0;background:none;color:#65766c;font-size:20px}.archive-list{margin-top:16px;flex-shrink:0;background:none;color:#5f7267;text-align:left;border-top:1px solid #dce4d9;border-radius:0;padding:16px 12px 0}.list-empty{padding:12px;color:var(--muted);font-size:12px}.chat-menu{position:fixed;z-index:50;background:white;width:156px;padding:6px;border:1px solid var(--line);border-radius:12px;box-shadow:0 8px 30px #172b2225}.chat-menu button{display:block;background:none;color:#334e40;text-align:left;width:100%;padding:10px 12px}.chat-menu button:hover,.chat-menu button:focus-visible{background:#f0f4ee}.chat-menu .danger{color:#a4493b}
main{min-width:0;min-height:0;flex:1;display:flex;flex-direction:column}header{height:72px;flex-shrink:0;border-bottom:1px solid var(--line);display:flex;align-items:center;justify-content:space-between;gap:12px;padding:0 36px}header strong{font-size:15px;font-weight:500;overflow:hidden;text-overflow:ellipsis;white-space:nowrap}#restore-chat{flex-shrink:0}#messages{flex:1;min-height:0;overflow:auto;padding:32px max(28px,calc((100% - 820px)/2));scroll-behavior:smooth}.welcome{max-width:640px;margin:8vh auto 0}.eyebrow{color:#718578;font-size:12px;letter-spacing:2px}.welcome h1{font-size:30px;font-weight:500;white-space:pre-line;margin:12px 0 16px;line-height:1.5}.welcome p{color:var(--muted);line-height:1.9}.suggestions{display:grid;grid-template-columns:1fr 1fr;gap:12px;margin-top:28px}.suggestions button{background:white;color:#516459;border:1px solid var(--line);text-align:left;font-size:13px;line-height:1.7;padding:17px}.empty-state{color:var(--muted);text-align:center;margin-top:18vh}
.message{margin:0 0 26px}.role{font-size:11px;color:var(--muted);margin:0 0 8px}.bubble{white-space:pre-wrap;overflow-wrap:anywhere;font-size:14px;line-height:1.9}.message.user{display:flex;flex-direction:column;align-items:flex-end}.user .bubble{background:#edf2e9;padding:12px 18px;border-radius:16px 16px 3px 16px;max-width:88%}.message.assistant .bubble{padding:5px 0}.photos{display:flex;gap:8px;flex-wrap:wrap;margin:8px 0;max-width:100%}.photos img{max-width:180px;max-height:180px;border-radius:10px;object-fit:contain;border:1px solid var(--line)}.progress{font-size:12px;color:#6c8977;margin-top:10px}.error{color:#a04c38}.copy{font-size:11px;background:none;color:var(--muted);padding:6px 0;margin-top:6px}details{margin-top:12px;font-size:12px;border:1px solid var(--line);border-radius:8px;padding:10px 12px;background:#f6f8f4}summary{cursor:pointer;color:#597261}.source{margin:12px 0 8px;padding-top:10px;border-top:1px solid var(--line)}.source strong{font-weight:500}.source pre{font:inherit;white-space:pre-wrap;line-height:1.75;max-height:260px;overflow:auto;color:#68776d}.source small{display:block;color:var(--muted);line-height:1.7;overflow-wrap:anywhere}
.composer-wrap{width:min(860px,100%);flex-shrink:0;padding:0 24px 22px;margin:0 auto}.composer{display:flex;flex-direction:column;gap:12px;min-width:0;border:1px solid #dce4d9;background:white;border-radius:17px;padding:14px 16px 12px;box-shadow:0 3px 18px #253b2910}textarea{display:block;flex:none;width:100%;margin:0;padding:0;resize:vertical;border:0;outline:0;background:none;color:#283d38;line-height:1.8;min-height:86px;height:86px;max-height:220px}textarea::placeholder{color:#9aa79d}.composer-bottom{display:flex;flex:none;align-items:center;justify-content:space-between;gap:12px;min-width:0}.composer-actions{display:flex;align-items:center;gap:8px;flex-shrink:0}.composer-bottom button{flex-shrink:0;min-height:40px}#send{min-width:74px}.quiet{background:none;color:#62786a;padding:8px 10px}#notice{color:#a04c38;font-size:12px;padding:0 0 8px;min-height:0;overflow-wrap:anywhere}#notice:empty{display:none}#attachments{display:flex;gap:10px;flex-wrap:wrap;min-width:0}#attachments:empty{display:none}.attachment{position:relative;margin:2px 0}.attachment img{width:65px;height:65px;object-fit:cover;border-radius:8px}.attachment .remove-attachment{position:absolute;right:-5px;top:-5px;border-radius:50%;padding:0;width:20px;height:20px;background:#526b5e;font-size:12px}.image-thumbnail{display:inline-flex;max-width:100%;padding:0;background:transparent;border-radius:10px;line-height:0;cursor:zoom-in}.image-thumbnail:hover{box-shadow:0 0 0 2px #6d9b87}.attachment .image-thumbnail{position:static;width:auto;height:auto}
.delete-dialog{border:1px solid var(--line);border-radius:18px;padding:24px;width:min(430px,calc(100vw - 32px));color:#283d38;box-shadow:0 16px 60px #10271c30}.delete-dialog::backdrop{background:#152a235c}.delete-dialog h2{font-size:19px;font-weight:500;margin:0 0 16px}.delete-dialog p{line-height:1.7;font-size:13px;overflow-wrap:anywhere}.delete-dialog #delete-description{font-weight:600}.dialog-actions{display:flex;justify-content:flex-end;gap:10px;margin-top:24px}.danger-button{background:#aa493d}
.image-viewer{width:calc(100vw - 32px);height:calc(100dvh - 32px);max-width:none;max-height:none;padding:0;border:0;border-radius:14px;background:#17211e;color:#f7faf8;overflow:hidden}.image-viewer::backdrop{background:#000c}.image-viewer-panel{display:flex;flex-direction:column;width:100%;height:100%}.image-viewer-toolbar,.image-viewer-footer{display:flex;align-items:center;justify-content:space-between;gap:12px;padding:12px 16px;flex-shrink:0}.image-viewer button{background:#ffffff18;color:#fff;border:1px solid #ffffff30;white-space:nowrap}.image-viewer-toolbar>div{display:flex;gap:8px}.image-viewport{flex:1;min-height:0;min-width:0;overflow:auto;display:flex;overscroll-behavior:contain}.image-viewport img{display:block;max-width:100%;max-height:100%;object-fit:contain;margin:auto;flex-shrink:0;cursor:zoom-in}.image-viewport img.original-size{max-width:none;max-height:none;cursor:zoom-out}.image-viewer-footer span{font-size:12px;color:#bac8c0;text-align:center}#image-error{margin:0;padding:12px 16px;color:#ffd5c4}
@media(max-width:760px){aside{width:180px;padding:22px 10px}.brand{font-size:14px;gap:8px;padding:0 4px 24px}.logo{width:30px;height:30px}header{padding:0 20px;height:64px}#messages{padding:25px 22px}.welcome h1{font-size:23px}.suggestions{grid-template-columns:1fr}.composer-wrap{padding:0 14px 16px}}
@media(max-width:520px){aside{width:128px;padding:20px 8px 14px}.brand{font-size:12px;gap:0}.brand .logo{display:none}.list-label{margin:22px 6px 8px}.new{font-size:12px;padding:10px 8px}.chat-open{font-size:12px;padding:11px 5px}.chat-more{width:25px}.archive-list{font-size:12px;padding-left:5px}header{padding:0 14px}header strong{font-size:13px}#messages{padding:20px 14px}.welcome h1{font-size:20px}.welcome p{font-size:12px}.suggestions button{font-size:12px;padding:12px}.photos img{max-width:120px}.composer-wrap{padding:0 10px 12px}.composer{padding:12px;gap:10px}textarea{min-height:76px;height:76px}.composer-bottom{gap:8px}.composer-bottom button{font-size:12px;padding:9px}#send{min-width:64px}.image-viewer{width:calc(100vw - 12px);height:calc(100dvh - 12px);border-radius:10px}.image-viewer-toolbar,.image-viewer-footer{padding:10px 8px;gap:6px}.image-viewer button{font-size:12px;padding:9px}.image-viewer-footer span{font-size:10px;max-width:110px}}
@media(max-width:360px){aside{width:104px}.brand{font-size:11px}.chat-open{font-size:11px}.chat-more{width:22px}}
.markdown{white-space:normal}.markdown> :first-child{margin-top:0}.markdown> :last-child{margin-bottom:0}.markdown p{margin:0 0 12px}.markdown strong{font-weight:650;color:#243e31}.markdown h1,.markdown h2,.markdown h3,.markdown h4,.markdown h5,.markdown h6{font-size:16px;font-weight:600;line-height:1.6;margin:22px 0 10px}.markdown h1{font-size:21px}.markdown h2{font-size:18px}.markdown ul,.markdown ol{margin:8px 0 14px;padding-left:25px}.markdown li{margin:5px 0}.markdown li p{margin:4px 0}.markdown blockquote{margin:12px 0;padding:8px 14px;border-left:3px solid #97b6a4;background:#f0f5ef;border-radius:0 8px 8px 0;color:#46624f}.markdown blockquote p:last-child{margin-bottom:0}.markdown code{font-family:Consolas,monospace;font-size:.9em;background:#edf1eb;border-radius:4px;padding:2px 5px}.markdown pre{max-width:100%;overflow:auto;padding:14px;background:#edf1eb;border-radius:9px;line-height:1.6;white-space:pre}.markdown pre code{padding:0;background:none}.markdown a{color:#28604e;text-decoration:underline;text-underline-offset:3px}.markdown hr{border:0;border-top:1px solid var(--line);margin:20px 0}.markdown-table{max-width:100%;overflow-x:auto;margin:12px 0}.markdown table{border-collapse:collapse;min-width:100%;font-size:13px}.markdown th,.markdown td{border:1px solid #dce5da;padding:9px 12px;vertical-align:top;text-align:left;min-width:100px}.markdown th{background:#edf2e9;font-weight:600}.markdown .align-center{text-align:center}.markdown .align-right{text-align:right}.markdown li>input{margin-right:6px}
.quota-panel{flex-shrink:0;border-top:1px solid #dce4d9;margin-top:16px;padding:12px 10px 0;font-size:12px}.quota-heading{display:flex;align-items:center;justify-content:space-between;color:#536c5d;margin-bottom:9px}.quota-heading button{background:none;color:#62786a;padding:3px 6px;font-size:18px;line-height:1}.quota-window{margin-bottom:11px;min-width:0}.quota-label{display:flex;justify-content:space-between;gap:6px;flex-wrap:wrap;line-height:1.6}.quota-label strong{font-size:11px;font-weight:500;color:#28604e}.quota-window progress{display:block;width:100%;height:5px;appearance:none;border:0;border-radius:4px;margin:5px 0;background:#d9e3d8;accent-color:#4b8066}.quota-window progress::-webkit-progress-bar{background:#d9e3d8;border-radius:4px}.quota-window progress::-webkit-progress-value{background:#4b8066;border-radius:4px}.quota-window progress[data-level=low]::-webkit-progress-value{background:#b88a36}.quota-window progress[data-level=empty]::-webkit-progress-value{background:#af5647}.quota-reset{display:block;color:#7b8a84;font-size:10px;line-height:1.6;overflow-wrap:anywhere}.quota-note{font-size:10px;color:#8b988f;margin:0;line-height:1.5}.quota-stale progress{opacity:.55}@media(max-width:520px){.quota-panel{padding:10px 4px 0;margin-top:12px;font-size:11px}.quota-label strong{font-size:10px}.quota-reset,.quota-note{font-size:9px}.quota-window{margin-bottom:9px}}
body.auth-required>aside,body.auth-required>main,body.auth-required>#chat-menu{display:none!important}.login-screen{display:none;width:100%;min-height:100dvh;align-items:center;justify-content:center;padding:24px;background:#f3f6f0}.auth-required .login-screen{display:flex}.login-card{width:min(360px,100%);background:white;border:1px solid #dce4d9;border-radius:20px;padding:32px;box-shadow:0 8px 40px #203b2810}.login-card h1{font-size:25px;font-weight:500;margin:0 0 10px}.login-card>p{font-size:13px;color:#7b8a84;line-height:1.7}.login-card label{display:block;font-size:12px;margin:24px 0 8px;color:#526b5b}.login-card input{font:inherit;width:100%;border:1px solid #d5dfd2;border-radius:10px;padding:12px;color:#283d38;background:white}.login-card input:focus{outline:2px solid #8bad98;outline-offset:2px}.login-card #login-message{color:#a04c38;min-height:22px;margin:10px 0;font-size:12px}.login-card button{width:100%;min-height:44px}.header-actions{display:flex;align-items:center;gap:8px;flex-shrink:0}.header-actions button{font-size:12px}@media(max-width:520px){.login-card{padding:28px 24px}.header-actions{gap:0}.header-actions button{font-size:10px;padding:8px 5px}}

.header-title{display:flex;align-items:center;gap:10px;min-width:0;flex:1}.header-title strong{min-width:0}#sidebar-toggle,#sidebar-close{display:none}.sidebar-backdrop{display:none}.chat-menu{z-index:80}
@media(max-width:760px){
  body{overflow:hidden}
  #sidebar{position:fixed;inset:0 auto 0 0;z-index:75;width:min(300px,85vw);height:100dvh;padding:calc(20px + env(safe-area-inset-top)) 16px calc(18px + env(safe-area-inset-bottom));border-right:1px solid var(--line);box-shadow:8px 0 32px #152a2320;transform:translateX(-100%);visibility:hidden;pointer-events:none;transition:transform .2s ease,visibility .2s}
  body.sidebar-open #sidebar{transform:translateX(0);visibility:visible;pointer-events:auto}
  #sidebar .brand{font-size:16px;gap:10px;padding:0 4px 20px}#sidebar .brand .logo{display:grid;width:34px;height:34px}#sidebar .brand>div{flex:1}
  #sidebar-toggle,#sidebar-close{display:inline-flex;align-items:center;justify-content:center;width:44px;height:44px;flex-shrink:0;padding:0;font-size:22px}#sidebar-close{font-size:28px}
  .sidebar-backdrop{display:block;position:fixed;inset:0;z-index:70;border:0;border-radius:0;background:#152a235c;padding:0;touch-action:none}
  body.auth-required>.sidebar-backdrop{display:none}
  header{padding:0 12px;gap:8px}.header-title{gap:8px}header strong{font-size:14px}
  #sidebar .new{font-size:14px;padding:12px 16px}#sidebar .list-label{margin:22px 12px 10px}#sidebar .chat-open{font-size:14px;padding:12px}#sidebar .chat-more{width:36px}#sidebar .archive-list{font-size:13px;padding-left:12px}
  #sidebar .quota-panel{font-size:12px;padding:12px 10px 0}#sidebar .quota-label strong{font-size:11px}#sidebar .quota-reset,#sidebar .quota-note{font-size:10px}
  .composer-wrap{padding-bottom:calc(12px + env(safe-area-inset-bottom))}
}
@media(prefers-reduced-motion:reduce){#sidebar{transition:none}}

.message-meta{display:flex;align-items:baseline;gap:10px;flex-wrap:wrap}.message-time{font-size:10px;color:#89968e;font-variant-numeric:tabular-nums}.reply-timing{font-size:11px;color:#7b8a84;line-height:1.6;margin-top:10px}

.document-attachment{display:flex;align-items:center;gap:8px;min-width:0;max-width:100%;border:1px solid var(--line);background:#f3f6f0;border-radius:9px;padding:8px 10px}.document-attachment>span{overflow:hidden;text-overflow:ellipsis;white-space:nowrap;font-size:12px}.remove-document{flex-shrink:0;background:none;color:#62786a;padding:2px 5px;font-size:18px}.message-files{display:flex;flex-direction:column;gap:8px;max-width:100%;margin:8px 0}.document-link{display:block;border:1px solid var(--line);border-radius:9px;background:#f0f5ef;color:#28604e;padding:10px 12px;font-size:12px;overflow-wrap:anywhere;text-decoration:none}.composer-bottom{flex-wrap:wrap}.composer-actions{margin-left:auto}