/* Each region resizes at its own border, without adding visible controls. */
.chat-layout>.chat-view-container{height:auto;min-height:0}
.chat-reading-pane{position:relative;flex:none;min-width:0;border:1px solid var(--border-hairline);border-radius:var(--radius-container)}
#chat-messages{flex:none;height:var(--chat-reading-height,600px);min-height:320px;max-height:1600px;min-width:0;overflow-y:auto;scrollbar-gutter:stable;border-radius:inherit}
#chat-messages>.chat-message-item{flex-shrink:0}
.chat-composer-wrap{position:relative}
#chat-input{display:block;height:64px;min-height:48px;max-height:360px;resize:none}
.chat-border-handle{position:absolute;bottom:-5px;left:16px;right:16px;height:10px;z-index:2;cursor:ns-resize;touch-action:none;user-select:none;outline:none}
.chat-border-handle::after{content:"";position:absolute;left:0;right:0;top:4px;height:1px;background:transparent}
.chat-border-handle:hover::after,.chat-border-handle.is-dragging::after{background:#aaa}
.chat-border-handle:focus-visible::after{height:2px;background:var(--color-text)}
html.chat-is-resizing,html.chat-is-resizing *{cursor:ns-resize!important;user-select:none!important}
.chat-sources-block>summary.sources-heading{min-height:44px;line-height:1.6;padding:10px 8px;cursor:pointer;border-radius:8px;margin-bottom:0;font-size:14px}
.chat-sources-block>summary.sources-heading:hover{background:var(--bg-subtle)}
.chat-sources-block[open]>summary.sources-heading{margin-bottom:12px}
.chat-sources-block>summary:focus-visible{outline:2px solid var(--color-text);outline-offset:2px}
.chat-left-info{display:flex;align-items:center;flex-wrap:wrap;gap:8px;min-width:0;max-width:100%}
.chat-left-info .model-badge{max-width:100%;overflow-wrap:anywhere}
@media(max-width:900px){#chat-messages{height:var(--chat-reading-height,540px)}}

/* 青鸟 · 有界留白. The final visual layer keeps the existing functional modules. */
:root{
 --bg-canvas:#f6f5f1;--bg-field:#ebeee6;--bg-subtle:#fcfbf8;--bg-hover:#e6eae0;
 --color-text:#303933;--color-text-secondary:#59645b;--color-text-muted:#70796e;
 --color-accent:#47675c;--color-accent-text:#fff;--border-hairline:#dedfd6;--border-strong:#a4b49e;
 --color-bg-base:#f6f5f1;--color-bg-subtle:#fcfbf8;--color-bg-muted:#ebeee6;--color-border:#dedfd6;--color-text-main:#303933;
 --radius-field:28px;--radius-container:24px;--radius-interactive:22px;
 --font-sans:'Manrope','Microsoft YaHei UI','Microsoft YaHei','PingFang SC',sans-serif;
}
html,body{font-size:15px;line-height:1.85;background:var(--bg-canvas)}
button,input,textarea,select,dialog{font-family:var(--font-sans)}
::selection{background:#dce5d9}::placeholder{color:#798174;opacity:1}
:focus-visible{outline:2px solid var(--color-accent);outline-offset:4px}
button,a{touch-action:manipulation}.btn{font-weight:400;min-height:44px;border-radius:24px}
.btn-primary{background:var(--color-accent);border-color:var(--color-accent)}
.btn-primary:hover{background:#36574a;border-color:#36574a}.btn-secondary{background:transparent;border-color:#d3d9cc}
.top-nav-bar{position:relative;background:transparent;border:0;padding:0 64px;max-width:1600px;margin:auto}
.nav-container{position:relative;max-width:none;height:118px;padding:0;border-bottom:1px solid var(--border-hairline);gap:24px}
.nav-brand,.login-aside-brand{display:flex;align-items:center;gap:10px;flex-shrink:0}
.brand-wordmark,.login-aside-brand>span{font-family:'HanyiFangSong',serif;font-size:29px;letter-spacing:4px;font-weight:400}
.brand-bird{display:block;object-fit:contain;width:47px;height:47px;order:-1}
.capsule-nav{position:absolute;left:50%;transform:translateX(-50%);padding:5px;gap:0;background:#eaece5;border-radius:30px}
.capsule-tab{width:84px;min-width:0;min-height:44px;padding:0 14px;justify-content:center;font-size:14px;font-weight:400;color:var(--color-text-muted)}
.capsule-tab.active{background:var(--bg-subtle);color:var(--color-text);font-weight:400}
.capsule-tab:hover:not(.active){background:transparent;color:var(--color-accent)}
.nav-indicator{top:5px;bottom:5px;background:var(--bg-subtle);box-shadow:0 2px 8px #343e2e06}
.nav-count-badge{display:none}.nav-actions{gap:18px}
.nav-action-link,.nav-action-btn{display:inline-flex;align-items:center;justify-content:center;min-width:44px;min-height:44px;padding:0 3px;font-size:12px;color:var(--color-text-muted)}
.content-wrapper{width:min(1120px,calc(100% - 112px));max-width:none;padding:0 0 72px}
.context-bar{min-height:44px;padding:0;margin:28px 0 0;gap:16px}
.context-left{visibility:visible;min-width:0}.view-title{font-size:12px;font-weight:400;color:var(--color-text-muted)}
.context-right{gap:18px;min-width:0}.workspace-selector-wrap{min-width:0}
.workspace-select{background:transparent;border-color:transparent;border-radius:22px;padding:6px 8px;max-width:260px;color:var(--color-text-muted);font-size:12px}
.doc-counter-pill{border:0;background:none;padding:0;font-size:12px;white-space:nowrap}.doc-counter-pill strong{font-weight:400}
/* Open title field and a single input surface. */
.search-hero-field{max-width:none;padding:0;background:none;border-radius:0;margin-bottom:60px}
.hero-top-row{display:grid;grid-template-columns:1.3fr 1fr;align-items:center;min-height:334px;margin:0;gap:0}
.hero-text-col{padding:34px 0 34px 32px;position:relative;z-index:1}
.hero-main-title{font-family:'HanyiFangSong',serif;font-size:62px;font-weight:400;line-height:1.4;letter-spacing:1px;margin:0}
.hero-main-title span{padding-left:42px}
.hero-visual-col{display:block;position:relative;width:auto;height:290px;flex:none;overflow:visible}
.open-arc{position:absolute;left:85px;top:20px;width:245px;height:255px;border:1px solid #d9ded2;border-bottom-color:transparent;border-right-color:transparent;border-radius:50% 50% 0 50%;transform:rotate(24deg)}
.hero-bird{position:absolute;width:260px;height:260px;object-fit:contain;left:105px;top:0;opacity:.13;animation:bird-drift 12s ease-in-out infinite}
.search-input-box{min-height:100px;border:1px solid #dedfd5;background:var(--bg-subtle);border-radius:26px;padding:22px 24px 22px 30px;gap:18px;box-shadow:0 12px 35px #30393303}
.search-input-box:focus-within{border-color:#9bac9e;box-shadow:0 12px 40px #30393308}
.search-icon{width:22px;height:22px;flex-shrink:0;fill:none;stroke:#7e887c;stroke-width:1.3}
.search-input{font-size:16px;padding:8px 0;min-width:0}.search-submit-btn{border-radius:50%;min-width:49px;width:49px;height:49px;min-height:49px;padding:0;font-size:24px;font-family:var(--font-sans);flex:none}
.search-results-section{max-width:none;margin:0}.results-header{padding:0 0 18px;border-bottom:1px solid var(--border-hairline);margin-bottom:0;min-height:44px}
.results-heading{font-family:'HanyiFangSong',serif;font-size:25px;font-weight:400}.results-badge{border:0;background:none;padding:0;font-size:12px}
.search-initial-guide{padding:0}.home-document{display:flex;align-items:center;gap:22px;width:100%;text-align:left;background:none;border:0;border-bottom:1px solid var(--border-hairline);padding:23px 8px;min-height:90px;color:var(--color-text);cursor:pointer;transition:padding .35s var(--ease-settle),background .35s}
.home-document:hover{padding-left:15px;background:#eef0e85c}.home-document-mark{display:grid;place-items:center;width:35px;height:43px;border:1px solid #cbd1c4;border-radius:11px;color:#7d8976;font-size:12px;flex:none}
.home-document-title{font-size:15px;line-height:1.7;flex:1;min-width:0;overflow-wrap:anywhere}.home-document-arrow{color:#7d8976;font-size:20px}.home-empty{padding:36px 0;font-size:14px;color:var(--color-text-muted)}
.result-item-card{padding:30px 0;background:none;border:0;border-bottom:1px solid var(--border-hairline);border-radius:0}.result-item-card:hover{background:none}
.result-item-title{font-size:21px;line-height:1.7;font-weight:500}.result-score-badge{border:0;background:none;color:var(--color-text-muted);padding:0;font-size:11px}
.result-meta-line{font-size:12px;gap:16px;margin-bottom:18px}.result-snippet-box{background:none;border:0;padding:0;border-radius:0;margin:0 0 20px}
.result-snippet-text,.result-snippet-box .markdown-body{font-size:16px;line-height:2;color:var(--color-text-secondary)}
.result-actions-bar{justify-content:flex-start;gap:22px}.result-actions-bar .btn-secondary{background:none;border-color:transparent;padding-left:0;padding-right:0;color:var(--color-accent);font-size:12px}
/* Reading layout retains session history, source citations and both resize handles. */
.reading-heading{padding:34px 0}.reading-heading h2{font-family:'HanyiFangSong',serif;font-size:42px;font-weight:400}
.chat-layout{grid-template-columns:210px minmax(0,1fr);gap:50px;align-items:start}
.chat-history-panel{height:auto;min-height:0;max-height:1000px;border:0;border-right:1px solid var(--border-hairline);border-radius:0;padding:0 24px 24px 0;background:none;overflow:auto}
.chat-history-panel>summary{min-height:44px;font-size:13px;font-weight:400;padding:0;color:var(--color-text-secondary)}
.history-count{font-size:11px;font-weight:400}.history-tools{margin:18px 0}.history-tools .form-input{background:#ecefe7;border:0;border-radius:22px;padding:12px 15px;font-size:12px;min-height:44px}
.history-item{border:0;border-radius:16px;padding:13px 12px;gap:6px}.history-item.active{background:#e7ede2;border:0}.history-item-title{font-size:13px;line-height:1.7}.history-item-meta{font-size:11px}.history-empty,.history-error{font-size:13px;padding:18px 0}
.chat-header-bar{border:0;padding:0 0 20px;margin:0}.chat-session-bar{gap:12px;align-items:center}.chat-session-bar h3{font-family:'HanyiFangSong',serif;font-size:25px;line-height:1.7;font-weight:400;flex:1 1 150px}
.chat-session-actions{gap:14px;flex-wrap:wrap}.chat-session-actions .btn{font-size:12px;min-height:44px;padding:0 13px}.chat-session-actions .btn-primary{background:none;border-color:#cbd5c4;color:var(--color-text)}.chat-session-actions .btn-secondary{background:none;border-color:transparent;color:var(--color-text-muted);padding:0 1px}.chat-session-status{font-size:12px;line-height:1.7}
.chat-reading-pane{background:transparent;border-color:transparent;border-radius:20px}
#chat-messages{padding:20px 0 28px;gap:30px;scrollbar-width:thin;scrollbar-color:#cdd6c6 transparent}
.chat-system-welcome{width:100%;margin:auto;text-align:center;align-items:center;display:flex;flex-direction:column;gap:18px}
.welcome-bird{width:82px;height:82px;opacity:.4;object-fit:contain}.chat-system-welcome .system-bubble{font-family:'HanyiFangSong',serif;font-size:28px;letter-spacing:2px}
.message-meta{font-size:11px;margin-bottom:12px;gap:12px}.meta-sender{font-weight:400}.message-bubble{font-size:16px;line-height:2}
.chat-layout .assistant-bubble,.system-bubble{background:none;border:0;border-radius:0;padding:0;color:var(--color-text-secondary)}
.user-bubble{background:#e8ede3;padding:15px 21px;border-radius:23px 23px 7px 23px;font-size:15px}.chat-message-user{max-width:90%}.chat-message-assistant{max-width:100%}
.markdown-body{font-size:16px;line-height:2;color:var(--color-text-secondary)}.markdown-body h1,.markdown-body h2{border:0;font-weight:500;padding:0}.markdown-body blockquote{border-left:2px solid #c6d3c0;background:none;border-radius:0;padding:0 0 0 20px}
.chat-sources-block{margin-top:25px;padding-top:15px}.chat-sources-block>summary.sources-heading{font-size:12px;font-weight:400;padding-left:0;color:var(--color-text-muted)}.sources-list{gap:18px}.source-item{background:none;border:0;border-bottom:1px solid var(--border-hairline);border-radius:0;padding:10px 0 18px}.source-item-title,.source-item-text{font-size:13px;line-height:1.9}.source-item-title{font-weight:400}
.chat-composer-wrap{border-radius:24px;padding:20px 22px 16px;margin-top:22px;background:var(--bg-subtle);box-shadow:0 10px 32px #30393303}.chat-composer-wrap:focus-within{border-color:#9bac9e}.chat-textarea{font-size:15px;line-height:1.8;background:none}
.chat-controls-bar{display:flex;flex-direction:row;align-items:center;justify-content:space-between;gap:12px;border:0;margin-top:8px;padding-top:10px}.chat-left-info{max-width:none;min-width:0;display:flex;align-items:center;gap:12px}.model-badge{display:none}
.effort-control{display:flex;align-items:center;gap:12px;min-width:0;border:0;margin:0;padding:0}.effort-label{font-size:12px;color:var(--color-text-muted);white-space:nowrap}
.effort-segments{display:inline-flex;align-items:center;padding:3px;border-radius:24px;background:#e9ede4;border:0;gap:0;min-width:0;max-width:100%}
.effort-option{position:relative;display:block;cursor:pointer;margin:0;font-weight:400}.effort-option input{position:absolute;width:1px;height:1px;opacity:0;inset:50% auto auto 50%;margin:0}
.effort-option span{min-width:48px;height:38px;padding:0 11px;border-radius:21px;display:flex;align-items:center;justify-content:center;font-family:'Manrope',sans-serif;font-size:12px;line-height:1;color:#687663;transition:background .24s var(--ease-settle),color .24s}
.effort-option input:checked+span{background:var(--bg-subtle);color:#36574a;box-shadow:0 1px 4px #3039330a}.effort-option input:focus-visible+span{outline:2px solid var(--color-accent);outline-offset:2px}.effort-option:hover span{color:#36574a}.effort-option input:disabled+span{opacity:.5;cursor:wait}
.settings-effort .effort-option span{min-width:78px;height:44px}.chat-right-btns{flex:none;gap:0}.chat-right-btns #chat-submit-btn{min-width:46px;width:46px;height:46px;min-height:46px;padding:0;border-radius:50%;display:flex;align-items:center;justify-content:center}.send-arrow{font-size:25px;line-height:1;font-family:var(--font-sans)}#chat-submit-btn:has(.btn-spinner:not(.hidden)) .send-arrow{display:none}
.chat-turn-pending{background:none;padding:10px 0;font-size:13px}.reasoning-panel{border-radius:18px;border-color:transparent;background:var(--bg-field)}.reasoning-panel>summary{background:var(--bg-field);font-size:12px;font-weight:400;padding:12px 16px}
/* Documents and messaging keep their real, established actions. */
.docs-view-wrap,.wechat-view-wrap{max-width:none;margin:0;gap:0}.docs-page-header,.wechat-page-header{padding-top:34px;margin-bottom:36px}.docs-page-header{display:flex;align-items:center;justify-content:space-between;gap:20px}.docs-section-title,.wechat-section-title{font-family:'HanyiFangSong',serif;font-size:42px;font-weight:400;line-height:1.5;letter-spacing:1px}.docs-page-header .btn{font-size:12px}
.docs-forms-row{gap:44px;margin:0 0 40px;align-items:start}.docs-form-panel{background:none;border:0;border-radius:0;padding:20px 0 0}.panel-header{align-items:center;gap:16px;margin-bottom:16px}.panel-title{font-size:19px;font-weight:400}.panel-tag{background:none;border:0;padding:0;color:var(--color-text-muted);font-size:11px}.panel-desc{font-size:13px;line-height:1.9;margin-bottom:24px}
.file-drop-area{min-height:166px;border:1px dashed #b9c8b1;border-radius:24px;background:#edf0e7;padding:30px 20px}.drop-text{font-size:14px}.drop-subtext{font-size:11px}.form-label{font-size:13px;font-weight:400;margin-bottom:10px}.form-group{margin-bottom:22px}.form-input,.form-textarea{background:var(--bg-subtle);border-color:#d5dbcd;border-radius:16px;font-size:14px}.form-input:focus,.form-textarea:focus{border-color:#9bac9e;box-shadow:none}
.docs-list-header{padding-bottom:20px;border-bottom:1px solid var(--border-hairline);margin:0}.list-heading{font-size:14px;font-weight:400}.badge-count{border:0;background:none;padding:0;font-size:12px}.docs-container{display:flex;flex-direction:column;gap:0}.doc-item-card{border:0;border-bottom:1px solid var(--border-hairline);border-radius:0;background:none;padding:25px 0;gap:24px;box-shadow:none}.doc-item-card:hover{background:none;box-shadow:none;transform:none}.doc-item-title{font-size:17px;font-weight:400;line-height:1.8}.doc-item-meta{font-size:11px;gap:15px;margin-top:6px}.doc-item-meta:empty{display:none}.doc-item-actions{gap:20px}.doc-item-actions .btn{font-size:12px;padding:0;background:none;border:0;color:var(--color-accent)}
.wechat-content-grid{grid-template-columns:minmax(0,1fr) minmax(0,.85fr);gap:70px}.wechat-panel{background:none;border:0;border-radius:0;padding:0}.wechat-info-rows{gap:18px}.info-row{padding:0;font-size:13px}.info-label{min-width:90px;color:var(--color-text-muted)}.info-val{font-size:13px;overflow-wrap:anywhere}.badge-status{font-size:11px;font-weight:400}.qr-box{border-radius:24px;background:var(--bg-subtle);border-color:var(--border-hairline)}.qr-placeholder-text{font-size:13px}.wechat-ws-box{margin-top:30px;padding-top:24px;border-top:1px solid var(--border-hairline)}.sub-setting-title{font-size:15px;font-weight:400}.sub-setting-desc{font-size:12px;line-height:1.8}.wechat-ws-form{gap:12px}.wechat-ws-form .sidebar-select{min-width:0;flex:1;background:var(--bg-subtle);border-radius:22px;font-size:12px}.wechat-ws-form .btn{font-size:12px;white-space:nowrap}.guide-steps-list{gap:30px}.step-badge{background:none;border:1px solid #d1d8c9;color:#687960;font-size:12px;width:30px;height:30px}.step-heading{font-size:16px;font-weight:400;margin-bottom:9px}.step-summary{font-size:13px;line-height:1.9}.wechat-poll-tip{font-size:12px}
/* Login and source reading share the same paper surface. */
.login-modal-overlay{background:var(--bg-canvas)}.login-card{max-width:880px;border:1px solid #d9ded2;border-radius:30px;background:var(--bg-subtle);grid-template-columns:1fr 1fr;gap:0}
.login-aside{background:#e9ede3;min-height:470px;margin:0;padding:44px 42px;border-radius:0;position:relative}.login-aside-brand{font-weight:400}.login-aside-body{display:grid;place-items:center;flex:1;position:relative}.login-bird-art{width:245px;max-width:100%;opacity:.16;transform:rotate(-10deg)}.login-main{padding:60px 40px}.login-main-header{margin-bottom:30px}.login-title{font-family:'HanyiFangSong',serif;font-size:30px;font-weight:400;line-height:1.5}.login-form .btn{font-size:14px}.login-form .form-input{min-height:48px}
.source-sidebar{top:14px;right:14px;bottom:14px;width:min(620px,calc(100% - 28px));max-width:none;border:1px solid #d9ded2;border-radius:28px;background:var(--bg-subtle);box-shadow:0 20px 70px #30393312}.source-scrim{background:#35432f38;backdrop-filter:blur(5px)}.source-sidebar-header{padding:20px 28px;border:0;min-height:76px}.source-header-title{font-size:13px;font-weight:400}.source-close-btn{width:44px;height:44px;border-radius:50%;background:var(--bg-field)}.source-sidebar-body{padding:16px 40px 40px}.source-doc-title{font-family:'HanyiFangSong',serif;font-size:32px;font-weight:400;line-height:1.6}.source-doc-header{margin-bottom:30px}.source-doc-text,.source-doc-text.markdown-body{font-size:16px;line-height:2.1}.source-meta-tag{font-size:11px;background:none;border:0;padding:0}.source-actions-bar .btn{font-size:12px}
.settings-dialog,.chat-manage-dialog{background:var(--bg-subtle);border-color:#d9ded2;border-radius:28px}.settings-dialog::backdrop,.chat-manage-dialog::backdrop{background:#35432f38;backdrop-filter:blur(5px)}.settings-header{border:0;padding:26px 32px 10px}.settings-header h2,.chat-manage-form h2{font-family:'HanyiFangSong',serif;font-weight:400;font-size:28px}.settings-form{padding:20px 32px 32px}.settings-help{font-size:12px;line-height:1.9}.settings-status{font-size:13px}.toast{font-size:13px;border-radius:24px}.state-panel{border-radius:20px;background:none;padding:35px 20px}.state-text{font-size:14px}
@keyframes bird-drift{0%,100%{transform:translate(0,0) rotate(-10deg)}50%{transform:translate(5px,-8px) rotate(-7deg)}}
@media(max-width:1100px){.top-nav-bar{padding:0 32px}.nav-container{height:105px}.nav-actions{gap:8px}.nav-action-link,.nav-action-btn{font-size:11px}.capsule-tab{width:74px}.content-wrapper{width:calc(100% - 64px)}.hero-text-col{padding-left:12px}.hero-main-title{font-size:54px}.hero-visual-col{transform:scale(.85);transform-origin:center}.hero-bird{left:35px}.open-arc{left:35px}.chat-layout{grid-template-columns:180px minmax(0,1fr);gap:32px}.chat-history-panel{padding-right:20px}.chat-session-bar{align-items:flex-start}.chat-session-actions{gap:12px}.chat-session-actions .btn{font-size:11px}.wechat-content-grid{gap:38px}}
@media(max-width:900px){.chat-layout{grid-template-columns:minmax(0,1fr);gap:25px}.chat-history-panel{max-height:none;border-right:0;border-bottom:1px solid var(--border-hairline);padding:0 0 14px}.chat-history-panel>summary{padding:0}.history-list{max-height:230px}.chat-layout>.chat-view-container{height:auto;min-height:0}.chat-session-bar h3{flex:1 1 150px}.chat-session-actions{width:auto}.chat-layout .assistant-bubble{padding:0}.effort-option span{min-width:50px;height:40px}.reading-heading{padding:24px 0}.wechat-content-grid{gap:28px}}
@media(max-width:650px){
 .top-nav-bar{padding:0 22px}.nav-container{height:141px;align-items:flex-start;padding:18px 0 0;gap:12px}.nav-brand{min-height:44px;gap:7px}.brand-wordmark{font-size:25px;letter-spacing:3px}.brand-bird{width:38px;height:38px}.nav-actions{gap:4px;margin-top:0}.nav-action-link,.nav-action-btn{font-size:11px;min-width:32px;padding:0 2px;white-space:nowrap}
 .capsule-nav{top:79px;width:100%;padding:4px;gap:0;overflow:visible}.capsule-tab{flex:1;width:auto;padding:0 10px;font-size:13px;justify-content:center}.nav-indicator{top:4px;bottom:4px}
 .content-wrapper{width:calc(100% - 44px);padding-bottom:46px}.context-bar{margin:17px 0 0;gap:12px;min-height:44px;flex-wrap:nowrap}.view-title{font-size:11px;white-space:nowrap}.context-right{gap:12px;flex:1;justify-content:flex-end;min-width:0}.workspace-select{font-size:11px;max-width:168px;padding:6px 0}.doc-counter-pill{font-size:10px;gap:3px}.workspace-selector-wrap{flex:0 1 auto}
 .hero-top-row{display:block;min-height:280px;position:relative;padding-top:20px}.hero-text-col{padding:20px 0 28px 5px}.hero-main-title{font-size:44px;line-height:1.45;letter-spacing:0}.hero-main-title span{padding-left:20px}.hero-visual-col{position:absolute;width:130px;height:165px;right:20px;top:48px;transform:none;opacity:.7}.hero-bird{width:140px;height:140px;left:0;top:0;opacity:.1}.open-arc{width:108px;height:140px;left:10px;top:0;border-color:#e1e5da;border-bottom-color:transparent;border-right-color:transparent}
 .search-hero-field{margin-bottom:42px}.search-input-box{min-height:90px;padding:18px 16px 18px 20px;border-radius:24px;gap:12px}.search-icon{width:19px;height:19px}.search-input{font-size:14px;padding:8px 0}.search-submit-btn{min-width:44px;width:44px;height:44px;min-height:44px;padding:0;font-size:23px}.results-heading{font-size:23px}.results-header{padding-bottom:14px}.results-badge{font-size:11px}.home-document{gap:15px;padding:22px 0;min-height:85px}.home-document-mark{width:30px;height:37px;border-radius:9px;font-size:10px}.home-document-title{font-size:13px;line-height:1.8}.home-document:hover{padding-left:3px}
 .result-item-card{padding:25px 0}.result-item-header{flex-wrap:wrap;gap:10px}.result-item-title{font-size:18px;flex-basis:100%}.result-meta-line{font-size:11px;gap:12px}.result-snippet-text,.result-snippet-box .markdown-body{font-size:15px}.result-actions-bar{gap:20px;flex-wrap:wrap}.result-actions-bar .btn{font-size:12px}
 .reading-heading h2{font-size:32px}.chat-session-bar{gap:12px}.chat-session-bar h3{font-size:24px;flex-basis:100%}.chat-session-actions{width:100%;gap:18px}.chat-session-actions .btn{font-size:12px;min-height:44px}.chat-session-actions .btn-primary{padding:0 15px}.chat-session-actions .btn-secondary{padding:0}.chat-system-welcome .system-bubble{font-size:25px}.welcome-bird{width:70px;height:70px}
 #chat-messages{padding:20px 0 28px;gap:28px}.message-meta{font-size:11px;gap:8px;flex-wrap:wrap}.message-bubble,.markdown-body{font-size:15px;line-height:2}.user-bubble{font-size:14px;padding:14px 18px}.chat-composer-wrap{padding:18px 16px 14px;margin-top:18px;border-radius:23px}.chat-textarea{font-size:15px}.chat-controls-bar{gap:8px;padding-top:10px}.chat-left-info{max-width:none;gap:0}.effort-control{gap:9px}.effort-label{font-size:11px}.effort-segments{padding:2px}.effort-option span{min-width:43px;height:40px;padding:0 9px;font-size:11px}.chat-right-btns #chat-submit-btn{width:44px;min-width:44px;height:44px;min-height:44px}.settings-effort .effort-option span{min-width:66px;height:44px}
 .docs-page-header,.wechat-page-header{padding-top:26px;margin-bottom:30px}.docs-section-title,.wechat-section-title{font-size:32px}.docs-page-header>.btn{font-size:11px;padding:0 15px;white-space:nowrap}.docs-forms-row{grid-template-columns:minmax(0,1fr);gap:30px;margin-bottom:36px}.docs-form-panel{padding-top:10px}.panel-title{font-size:18px}.panel-desc{font-size:12px}.docs-list-header{gap:12px;flex-wrap:wrap}.list-heading{font-size:13px}.badge-count{font-size:11px}.doc-item-card{padding:24px 0;gap:12px;flex-direction:column;align-items:stretch}.doc-item-title{font-size:16px;line-height:1.8}.doc-item-meta{font-size:11px}.doc-item-actions{gap:24px;flex-wrap:wrap}.doc-item-actions .btn{font-size:12px}.form-label{font-size:13px}.form-input,.form-textarea,.sidebar-select{font-size:14px}
 .wechat-content-grid{grid-template-columns:minmax(0,1fr);gap:45px}.wechat-ws-form{flex-direction:column;align-items:stretch}.wechat-ws-form .sidebar-select{width:100%}.wechat-ws-form .btn{align-self:flex-start}.wechat-info-rows{gap:16px}.info-label,.info-val{font-size:12px}.guide-steps-list{gap:26px}
 .source-sidebar{top:8px;right:8px;bottom:8px;width:calc(100% - 16px);border-radius:25px}.source-sidebar-header{padding:14px 16px 4px 25px;min-height:62px}.source-sidebar-body{padding:20px 25px 36px}.source-doc-title{font-size:26px}.source-doc-text,.source-doc-text.markdown-body{font-size:15px;line-height:2.1}
 .login-modal-overlay{padding:22px}.login-card{grid-template-columns:minmax(0,1fr);max-width:420px;border:0;background:none;gap:30px;overflow:visible}.login-aside{min-height:0;background:none;padding:0;margin:0}.login-aside-body{display:none}.login-main{padding:0}.login-aside-brand>span{font-size:27px}.login-title{font-size:28px}.login-main-header{margin-bottom:26px}.settings-header{padding:22px 24px 8px}.settings-form{padding:20px 24px 28px}.settings-grid{grid-template-columns:minmax(0,1fr);gap:18px}.settings-help{font-size:12px}.settings-actions{flex-wrap:wrap;gap:12px}.chat-manage-dialog{padding:22px}.toast{font-size:12px}
}
.context-left{visibility:hidden}
@media(max-width:650px){.context-bar{flex-direction:row;align-items:center}.context-left{display:none}.context-right{width:100%;justify-content:space-between;align-items:center}.workspace-selector-wrap{flex:1}.workspace-select{max-width:100%}}
@media(max-width:360px){.top-nav-bar{padding:0 16px}.content-wrapper{width:calc(100% - 32px)}.nav-actions{gap:1px}.nav-action-link,.nav-action-btn{font-size:10px;min-width:30px}.hero-main-title{font-size:39px}.hero-visual-col{right:18px;width:110px;opacity:.5}.hero-bird{width:115px}.open-arc{width:95px}.workspace-select{max-width:180px}.doc-counter-pill{gap:2px}.effort-control{gap:6px}.effort-option span{min-width:39px;padding:0 7px}.chat-composer-wrap{padding-left:14px;padding-right:14px}.chat-controls-bar{gap:6px}}
@media(prefers-reduced-motion:reduce){.hero-bird{animation:none}.nav-indicator,.view-stage,.view-stage>.tab-view,.source-sidebar,.source-scrim,.login-modal-overlay,#docs-import-fields,.effort-option span{transition-property:none}}