/* New design applied to the production DOM. No fixture content or backend replacement. */
.design-web .managed-json{min-width:0;overflow-wrap:anywhere;padding:16px 4px}
.design-web .managed-json h2{font-size:21px;margin:0 0 8px}
.design-web .managed-json-meta{font-size:13px;color:#737373;margin:0 0 16px}
.design-web .managed-question{padding:20px;margin:16px 0;background:#fff;border:1px solid #eee;border-radius:16px}
.design-web .managed-question-text{white-space:pre-wrap;overflow-wrap:anywhere;line-height:1.85}
.design-web .managed-question-stem{font-weight:500;margin:12px 0}
.design-web .managed-question-option{display:flex;align-items:baseline;gap:12px;padding:10px 0}
.design-web .managed-question-option>span{color:#737373;flex:0 0 22px}
.design-web .managed-question-option>div{min-width:0;flex:1}
.design-web .managed-json details{margin:14px 0 0}
.design-web .managed-json summary{cursor:pointer;padding:10px 0;font-size:14px;color:#555}
.design-web .managed-json-fields{margin:8px 0;min-width:0}
.design-web .managed-json-fields>div{padding:10px 0;border-bottom:1px solid #eee}
.design-web .managed-json-fields dt{font-size:13px;color:#737373;margin-bottom:4px}
.design-web .managed-json-fields dd{margin:0 0 0 12px;min-width:0}
.design-web .managed-json .workspace-document{white-space:pre-wrap;overflow-wrap:anywhere;max-width:100%}
/* Layout repairs on the existing production components; preserve navigation and theme. */
/* Companion catalogue: navigation is subordinate to the compact content list. */
.design-web #privatePanel .workspace-companion .managed-columns{gap:20px;overflow:hidden}
.design-web #privatePanel .workspace-companion .managed-tree{flex:0 0 30%;width:30%;min-width:110px;max-width:164px;align-self:flex-start;max-height:100%;padding:6px;background:#f3f3f3;border-radius:14px;scrollbar-width:thin}
.design-web :is(#fileBrowser,#privatePanel .workspace-companion) .managed-tree-row{position:relative;display:flex;align-items:center;gap:0;min-height:44px;margin:3px 0;padding-block:0;padding-right:4px;border-radius:9px;font-size:14px;line-height:1.5;color:#444;text-align:left;background:transparent;box-shadow:none;overflow-wrap:anywhere;box-sizing:border-box}
.design-web :is(#fileBrowser,#privatePanel .workspace-companion) .managed-tree-row.folder{font-weight:500;color:#525252}
.design-web :is(#fileBrowser,#privatePanel .workspace-companion) .managed-tree-row:hover{background:#ededed}
.design-web :is(#fileBrowser,#privatePanel .workspace-companion) .managed-tree-row.active{background:#fff;color:#171717;box-shadow:0 2px 8px #00000008;font-weight:600}
.design-web :is(#fileBrowser,#privatePanel .workspace-companion) .managed-tree-row.ancestor{color:#171717}
.design-web :is(#fileBrowser,#privatePanel .workspace-companion) .managed-tree-open{display:flex;align-items:center;gap:10px;flex:1;min-width:0;min-height:46px;padding:7px 6px;background:transparent;color:inherit;font:inherit;text-align:left;border:0;border-radius:10px;box-shadow:none}




.design-web :is(#fileBrowser,#privatePanel .workspace-companion) .managed-tree-label{min-width:0;overflow-wrap:anywhere}
.design-web :is(#fileBrowser,#privatePanel .workspace-companion) .managed-tree-row button:focus-visible{outline:2px solid #555;outline-offset:-2px}

.design-web #privatePanel .workspace-companion .managed-content{padding:0;min-width:0}
.design-web :is(#fileBrowser,#privatePanel .workspace-companion) .managed-tree{background:#f3f3f3;border-radius:14px;padding:6px}
.design-web :is(#fileBrowser,#privatePanel .workspace-companion) .managed-tree-row{border-radius:11px;margin:2px 0}
.design-web :is(#fileBrowser,#privatePanel .workspace-companion) .managed-tree-open:hover{transform:none;box-shadow:none}
.design-web :is(#fileBrowser,#privatePanel .workspace-companion) .managed-content:has(>.managed-empty){background:transparent;border:0}
.design-web :is(#fileBrowser,#privatePanel .workspace-companion) .managed-empty{display:flex;flex-direction:column;align-items:center;justify-content:center;min-height:240px;height:min(100%,320px);padding:28px 20px;text-align:center;box-sizing:border-box}
.design-web .managed-empty-icon{display:grid;place-items:center;width:52px;height:52px;margin-bottom:16px;background:#efefef;border-radius:16px;color:#858585}
.design-web .managed-empty-icon svg{width:26px;height:26px}
.design-web .managed-empty strong{font-size:16px;font-weight:600;color:#454545}
.design-web .managed-empty p{max-width:260px;margin:8px 0 0;font-size:13px;line-height:1.8;color:#818181}
@media(max-width:650px){.design-web #privatePanel .workspace-companion .managed-columns{flex-direction:column;gap:12px}.design-web #privatePanel .workspace-companion .managed-tree{flex:0 0 auto;width:100%;max-width:none;max-height:150px;background:#f2f2f2}.design-web :is(#fileBrowser,#privatePanel .workspace-companion) .managed-tree-row{margin:0}}
.design-web #privatePanel .managed-navigation{display:none;gap:8px;align-items:center}
.design-web #privatePanel .managed-toolbar[hidden]{display:none}
.design-web #privatePanel:has(>.workspace-companion:not([hidden])>.managed-library) .managed-navigation{display:flex}
.design-web #privatePanel .managed-navigation button{width:44px;height:44px;min-width:44px;padding:10px;border-radius:50%;display:grid;place-items:center}
.design-web #privatePanel .managed-navigation svg{width:20px;height:20px}
.design-web #privatePanel .private-head{flex-wrap:wrap}
.design-web #privatePanel .private-head-actions{margin-left:auto}
.design-web .web-bank .bank-card>*{min-width:0;max-width:100%;overflow-wrap:anywhere}
.design-web .web-bank .bank-card p{line-height:1.6}
.design-web .web-bank .bank-card button{white-space:normal}
.design-web .plan button.plan-delete,.design-web .plan:first-child button.plan-delete{width:44px;height:44px;padding:11px;margin:0;background:transparent;color:#737373;border-radius:50%}
.design-web .plan button.plan-delete:hover,.design-web .plan:first-child button.plan-delete:hover{background:#f3f3f3;color:#b52e2e}
.design-web #fileBrowser .managed-content>.learning-document{max-width:none;width:100%;margin:8px 0;padding:0 8px;font-size:16px;line-height:1.65;overflow-wrap:anywhere}
.design-web #fileBrowser .learning-document pre{max-width:100%;overflow:auto}
.design-web #fileBrowser .learning-document img{max-width:100%;height:auto}
.design-web #fileBrowser .managed-toolbar>.managed-path{min-width:0;line-height:1.5}
.design-web .managed-file>button:last-child{flex-shrink:0}
/* The full-page library uses the available width; compact rules stay out of the chat reader. */
.design-web #filesPage.scroll-page{padding:0 0 8px}
.design-web #fileBrowser .managed-library>.managed-toolbar{padding:0 0 12px;border-bottom:1px solid var(--line);margin-bottom:16px}
.design-web .managed-library>.managed-toolbar button{min-width:44px;min-height:44px;padding:8px 14px;border-radius:12px}
.design-web #fileBrowser .managed-toolbar button.managed-nav-button{display:grid;place-items:center;flex:0 0 44px;width:44px;height:44px;padding:10px;border-radius:50%;background:#f0f0f0}
.design-web #fileBrowser .managed-nav-button svg{width:20px;height:20px}
.design-web #fileBrowser .managed-nav-button:hover:not(:disabled){background:#e5e5e5}
.design-web #fileBrowser .managed-nav-button:disabled{opacity:.4;cursor:default}
.design-web #fileBrowser .managed-nav-button:focus-visible{outline:2px solid #777;outline-offset:2px}
.design-web #fileBrowser .managed-path{font-size:16px}
.design-web #fileBrowser .managed-columns{gap:20px;overflow:hidden}
.design-web #fileBrowser .managed-tree{flex:0 0 168px;width:168px;align-self:flex-start;max-height:100%;padding:6px;border:0;background:#f3f3f3;border-radius:14px}
.design-web #fileBrowser .managed-content{padding:0;min-height:0}
.design-web #fileBrowser .workspace-empty{padding:24px;background:#fff;border:1px solid var(--line);border-radius:12px}
@media(max-width:650px){
  .design-web #fileBrowser .managed-columns{gap:10px;flex-direction:column}
  .design-web #fileBrowser .managed-tree{flex:0 0 auto;width:100%;max-height:180px;padding:4px}
  .design-web #fileBrowser .managed-library>.managed-toolbar{gap:8px;margin-bottom:12px;padding-bottom:8px}
  .design-web #fileBrowser .managed-toolbar>.managed-path{order:1;flex:1 0 100%;font-size:14px}
  .design-web #fileBrowser .managed-content>.learning-document{padding:0 4px;margin:8px 0}
  .design-web .web-bank .bank-card{padding:14px;gap:12px;min-height:180px}
  .design-web .web-bank .bank-card button{padding:10px 12px}
}
.design-web #filesPage{overflow:hidden}.design-web #fileBrowser{height:100%;min-height:0}.design-web #fileBrowser .workspace-library.managed-library,.design-web .workspace-companion .workspace-library.managed-library{display:flex;align-items:stretch;gap:0}.design-web .workspace-companion:has(>.managed-library){overflow:hidden;display:flex;flex-direction:column}
body.design-web{--bg:#fafafa;--ink:#171717;--muted:#737373;--dark:#171717;--soft:#eee;--line:#eee;--surface:#fff;--float:none;background:#fafafa;padding:0}
.design-web button{box-shadow:none;background:#fff;border:0;color:#171717;transform:none}
.design-web #dialog .modal:has(#chatTitleInput){width:min(480px,100%);padding:28px}
.design-web #dialogBody:has(#chatTitleInput){width:100%;padding-top:20px}
.design-web #chatTitleInput{width:100%;min-height:48px;margin:8px 0 16px;padding:12px 16px;border-radius:16px;font-size:16px}
.design-web #dialogBody:has(#chatTitleInput) .row{margin-top:8px}
.design-web #dialogBody:has(#chatTitleInput) .primary{width:100%;min-height:44px;border-radius:24px}
.design-web .history-item{display:grid;grid-template-columns:minmax(0,1fr) 44px;align-items:center;min-width:0;border-radius:16px;margin-bottom:4px}
.design-web .history-item:hover,.design-web .history-item:has(.active){background:#ececec}
.design-web .history-dragging{opacity:.5}
.design-web .history-drop{box-shadow:0 -2px #737373}
.design-web #chatList .history-item .history-entry{display:block;width:100%;max-width:none;min-width:0;min-height:48px;margin:0;padding:12px 16px;font-size:15px;text-align:left;overflow:hidden;text-overflow:ellipsis;white-space:nowrap;background:transparent;border-color:transparent;color:#252525;touch-action:none;user-select:none;-webkit-touch-callout:none}
.design-web #chatList .history-item .history-more{display:grid;place-items:center;width:44px;height:48px;min-width:44px;padding:0;background:transparent;border:0;border-radius:16px;color:#333;font-size:24px}
.design-web .history-actions{position:fixed;inset:auto;margin:0;width:152px;padding:6px;border:1px solid #e5e5e5;border-radius:16px;background:#fff;box-shadow:0 6px 24px #0002;color:#171717}
.design-web #chatList .history-actions button{display:block;width:100%;min-height:44px;padding:10px 14px;text-align:left;background:transparent;border:0;border-radius:10px;color:inherit;font-size:14px}
.design-web #chatList .history-actions button:hover,.design-web #chatList .history-actions button:focus-visible{background:#f0f0f0;transform:none}
.design-web .rail-account{position:relative;padding-right:52px}
.design-web .rail-account .drawer-logout{position:absolute;right:0;top:50%;transform:translateY(-50%);display:grid;place-items:center;width:44px;height:44px;padding:11px;border-radius:50%;background:transparent;color:#737373}
.design-web .rail-account .drawer-logout:hover:not(:disabled){transform:translateY(-50%);background:#eee;color:#171717}
.design-web .drawer-logout svg{width:22px;height:22px;fill:none;stroke:currentColor;stroke-width:1.7;stroke-linecap:round;stroke-linejoin:round}
.design-web .plan{position:relative}
.design-web .plan button.plan-delete{position:absolute;top:12px;right:12px;display:grid;place-items:center;width:44px;height:44px;padding:11px;margin:0;border-radius:50%;background:transparent;color:#737373}
.design-web .plan button.plan-delete:hover{background:#f3f3f3;color:#b52e2e}
.design-web .plan-delete svg{width:22px;height:22px;fill:none;stroke:currentColor;stroke-width:1.7;stroke-linecap:round;stroke-linejoin:round}
.design-web .bank-controls .region-trigger{flex:0 0 auto;width:140px;min-width:100px;height:52px;min-height:52px;border:0;border-radius:28px;background:#eee;padding:4px 20px;text-align:center;font-size:13px;line-height:20px;box-sizing:border-box}
.design-web #dialog:has(.region-picker)>.modal{width:min(560px,calc(100vw - 32px));max-width:calc(100vw - 32px);max-height:80dvh;overflow:auto}
.design-web .region-options{display:grid;grid-template-columns:repeat(auto-fit,minmax(76px,1fr));gap:10px;padding:4px 0}
.design-web .region-options button{min-height:44px;padding:10px 8px;border-radius:16px;background:#f3f3f3;text-align:center}
.design-web .region-options button.selected{background:#171717;color:#fff}
.design-web .ui-line-icon{display:inline-flex;align-items:center;justify-content:center;width:22px;height:22px;flex:0 0 22px;vertical-align:middle}
.design-web .ui-line-icon svg{display:block;width:100%;height:100%;fill:none;stroke:currentColor;stroke-width:1.7;stroke-linecap:round;stroke-linejoin:round}
.design-web .plan .plan-mark{display:flex;align-items:center;justify-content:center;width:40px;height:40px;color:#525252}
.design-web .plan-mark .ui-line-icon{width:28px;height:28px;flex-basis:28px}
.design-web button.ui-labeled-icon{display:inline-flex;align-items:center;justify-content:center;gap:8px}
.design-web button.workspace-file-row.ui-labeled-icon{justify-content:flex-start}
.design-web button.ui-icon-button{display:inline-flex;align-items:center;justify-content:center}
.design-web button:hover:not(:disabled){box-shadow:none;transform:none;background:#eee}
.design-web button.primary{background:#171717;color:#fff}
.design-web .app,.design-web .app.sidebar-collapsed{display:block;--sidebar-width:0px;background:#fafafa;height:100dvh;max-width:none;border-radius:0}
.design-web .app .main,.design-web .app:has(#chatPage:not([hidden])) .main{height:100%;padding:0 24px 18px;min-height:0}
.design-web .app .rail{position:fixed;inset:0 auto 0 0;width:min(360px,90vw);z-index:31;display:flex;flex-direction:column;align-items:stretch;padding:24px 20px;margin:0;background:#fafafa;border:0;border-radius:0 32px 32px 0;gap:24px;overflow:hidden;box-shadow:none}
.design-web .app.sidebar-collapsed .rail{display:none}
.design-web .navigation-shade{position:fixed;inset:0;z-index:30;background:#0005;border-radius:0;width:100%;height:100%}
.design-web .app .navigation-shade:hover:not(:disabled),.design-web .app .navigation-shade:active{background:#0005;transform:none}
.design-web .app .rail{border-right:1px solid #dedede;box-shadow:12px 0 36px #00000014}
.design-web .rail .logo,.design-web #sidebarResize{display:none!important}
.design-web .rail-brand{font-size:26px;color:#171717}.design-web .rail .nav-tree{overflow-y:auto;gap:4px;flex:1;min-height:0}
.design-web .rail .nav-group-heading button:first-child{font-size:17px;height:48px;color:#171717;font-weight:400}
.design-web .nav-group-heading:has(.on){background:#e9e9e9;border-radius:24px}
.design-web .nav-group-heading .nav-add{opacity:1;pointer-events:auto}
.design-web .recent-history{padding-top:24px}.design-web .recent-history>small{padding:10px 12px;display:block}
.design-web .rail .recent-history .nav-children{padding:0;display:block;background:none}
.design-web #navHistory{display:grid!important;position:absolute;left:24px;top:18px;z-index:9;width:48px;height:48px;place-items:center;border-radius:50%;padding:12px;background:#fff}
.design-web #navHistory svg,.design-web #newChat svg{width:24px;height:24px;fill:none;stroke:currentColor;stroke-width:1.7;stroke-linecap:round;stroke-linejoin:round}
.design-web .main>.heading{height:80px;min-height:80px;margin:0;padding:0 64px;display:flex!important;align-items:center}
.design-web .heading-title small,.design-web .chat-head,.design-web .composer-tip{display:none}
.design-web .app[data-page=chat] .heading{height:0;min-height:0;margin:0}.design-web .app[data-page=chat] .heading-title{display:none}
.design-web #chatPage{min-height:0;flex:1}.design-web .conversation{border:0;border-radius:0;background:none;min-height:0}
.design-web :is(#chatPage,.ai-companion-chat) .messages{padding:88px max(20px,calc((100% - 850px)/2)) 24px}
.design-web .msg.assistant>.avatar{display:none}.design-web .msg.assistant .bubble{max-width:100%;font-size:16px}
.design-web .msg.user .bubble{background:#292929;color:#fff;border:0;border-radius:24px;box-shadow:none}
.design-web .composer-wrap{width:min(920px,100%);padding:8px 0 0}.design-web .composer{position:relative;display:grid;grid-template-columns:44px minmax(0,1fr) 44px 44px;align-items:end;gap:8px;padding:14px;border:0;border-radius:32px;background:#fff;box-shadow:none}
.design-web #chips,.design-web .quote-draft,.design-web .message-queue{grid-column:1/-1}
.design-web .composer textarea{grid-column:2;grid-row:2;min-height:44px;padding:10px 0;font-size:16px}
.design-web .composer-foot{display:contents}.design-web #attach{grid-column:1;grid-row:2;background:none;width:44px;height:44px}
.design-web #send{grid-column:5;grid-row:2;width:44px;height:44px;margin:0;border-radius:50%;background:#171717;color:white}
.design-web .composer-foot>button:not(#attach):not(#send){grid-column:4;grid-row:2;width:44px;height:44px}
.design-web .composer-foot>small{display:none}.design-web .attachment-picker{position:absolute;bottom:100%;left:0;width:220px;background:#fff;padding:10px;border:1px solid #eee;border-radius:24px;box-shadow:0 8px 32px #0001;z-index:12}
.design-web .attachment-picker button{display:block;width:100%;text-align:left;padding:16px}
.design-web .private-toggle{top:18px;right:0;border:0;background:#fff;box-shadow:none}
.design-web #practicePage{padding-top:0}.design-web #practicePage>.section-heading{display:none}
.design-web .app[data-page=practice] .heading-title{display:none}
.design-web .practice-filters{display:flex;flex-wrap:nowrap;min-width:0;width:max-content;max-width:100%;height:52px;border:0;box-sizing:border-box;gap:2px;border-radius:28px;padding:4px;background:#eee;margin:0 0 26px;overflow-x:auto;overflow-y:hidden}
.design-web .heading>#practiceFilters{position:static;margin:0;min-height:48px}
.design-web .practice-filters button{flex:0 0 auto;white-space:nowrap;height:44px;min-height:44px;border:0;box-sizing:border-box;font-size:13px;line-height:20px;border-radius:24px;background:transparent;padding:10px 16px;box-shadow:none}
.design-web .practice-filters button.active{background:#fff;color:#171717}
.design-web .plan-grid{grid-template-columns:repeat(2,minmax(0,1fr));gap:16px}.design-web .plan,.design-web .plan:first-child{background:white;box-shadow:none;border:0;padding:24px;border-radius:28px;min-height:220px;transition:background-color .15s,border-color .15s,box-shadow .15s}
.design-web .plan button,.design-web .plan:first-child button{background:#171717;color:white;width:auto;align-self:flex-end;padding:12px 20px;border-radius:26px}
.design-web .plan-mark{background:none;box-shadow:none;border:0}.design-web .side-empty{border:0;background:none}
.design-web .bank-controls{display:flex;align-items:center;gap:12px;margin:0 0 20px;flex-wrap:wrap}
.design-web .private-practice:has(>.web-bank:not([hidden])){display:grid;grid-template-columns:max-content minmax(0,1fr);grid-auto-rows:max-content;column-gap:12px;row-gap:26px;align-content:start;align-items:center}
.design-web .private-practice:has(>.web-bank:not([hidden]))>.practice-filters{grid-column:1;grid-row:1;margin:0}
.design-web .private-practice>.web-bank:not([hidden]){display:contents}
.design-web .heading>.bank-controls{display:none}
.design-web .app[data-page=practice] .heading:has(.bank-tab.active)>.bank-controls{display:flex;flex-wrap:nowrap;overflow-x:auto;margin:0 0 0 12px;min-width:0}
.design-web .heading>.bank-controls>*{flex-shrink:0}
.design-web .web-bank>.bank-controls{grid-column:2;grid-row:1;flex-wrap:nowrap;overflow-x:auto;margin:0;min-width:0}
.design-web .web-bank>.bank-controls>*{flex-shrink:0}
.design-web .web-bank>:not(.bank-controls){grid-column:1 / -1}
.design-web .bank-controls select{font:inherit;color:#171717;border:1px solid #e5e5e5;border-radius:28px;background:#fff;padding:12px 18px;max-width:150px}
.design-web .bank-subjects{display:flex;height:52px;box-sizing:border-box;border:0;padding:4px;border-radius:28px;background:#eee}.design-web .bank-subjects button{height:44px;min-height:44px;box-sizing:border-box;border:0;font-size:13px;line-height:20px;border-radius:24px;background:transparent;padding:10px 18px}.design-web .bank-subjects .active{background:#fff}
.design-web .bank-grid{display:grid;grid-template-columns:repeat(auto-fill,minmax(min(100%,240px),1fr));gap:16px}
.design-web .web-bank{width:100%;max-width:none;margin-inline:0}
.design-web .web-bank{container-type:inline-size}
.design-web .web-bank .bank-card{min-height:180px;padding:18px;gap:16px}
.design-web .bank-card{display:flex;flex-direction:column;align-items:flex-start;gap:10px;padding:22px;border:1px solid #eee;border-radius:24px;background:#fff;min-width:0;min-height:200px}
.design-web .web-bank .bank-card button{width:auto;min-height:44px;align-self:flex-end;padding:10px 24px}
.design-web .bank-card h3{font-size:17px;overflow-wrap:anywhere}.design-web .bank-card p{color:#737373;font-size:13px}.design-web .bank-card button{margin-top:auto;border-radius:24px}.design-web .bank-status{padding:24px;color:#737373}
.design-web .exam{left:0;bottom:0}.design-web .paused{left:0}.design-web .modal{background:#fff;border:0;border-radius:30px}.design-web .overlay{backdrop-filter:none;background:#0005}
.design-web .app:has(#chatPage:not([hidden])){background:#fafafa}
.design-web :is(#chatPage,.ai-companion-chat) .conversation .composer{background:#fff;box-shadow:none;border:0;backdrop-filter:none;padding:14px;border-radius:32px}
.design-web :is(#chatPage,.ai-companion-chat) .composer-foot #send{width:44px;height:44px;border:0;box-shadow:none;background:#171717;border-radius:50%}
.design-web .empty .symbol{display:none}.design-web .empty h3{font-size:28px}.design-web .suggestions button{background:#eee;border:0;box-shadow:none}
.design-web .app .rail{overflow:hidden!important}
.design-web .app .main:has(>#navHistory){padding-top:0}
/* Phase 2: real practice surface, compact tools and independently scrolling material. */
.design-web:has(>#exam:not([hidden])) #navHistory{display:none!important}
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.ai-companion-content>#exam{position:relative;inset:auto;width:100%;height:100%;min-height:0;flex:1;z-index:auto}
.design-web #exam #rotateExamLayout{display:none}
.design-web #exam.has-material #rotateExamLayout{display:grid;margin-left:auto}
.design-web #exam.has-material #annotate{margin-left:0}
.ai-companion-host>.ai-companion-menu,.ai-companion-host>.ai-companion-collapse{position:absolute;top:12px;width:44px;height:44px;padding:0;display:grid;place-items:center;border:0;border-radius:50%;background:#fff;color:#171717;font-size:23px;z-index:5;cursor:pointer}
.ai-companion-menu{left:16px}.ai-companion-collapse{right:16px}
.ai-companion-host>.ai-companion-chat,.ai-companion-host>.ai-companion-content{padding-top:48px;box-sizing:border-box}
.ai-companion-host.compact-exam{padding-top:max(8px,env(safe-area-inset-top,0px))}
.ai-companion-host.compact-exam>.ai-companion-chat,.ai-companion-host.compact-exam>.ai-companion-content{padding-top:0}
.design-web .ai-companion-content .exam-header :is(.ai-companion-menu,.ai-companion-collapse){position:static;flex:0 0 44px;width:44px;height:44px;padding:0;border:0;border-radius:50%;background:#fff;color:#171717;display:grid;place-items:center;box-shadow:none}
.design-web.ai-companion-open .app .rail{z-index:62}
.design-web.ai-companion-open .navigation-shade{z-index:61}
.ai-companion-divider{cursor:col-resize;touch-action:none;position:relative;outline-offset:-2px}
.ai-companion-divider:after{content:'';position:absolute;left:6px;top:40%;height:20%;width:2px;background:#bbb;border-radius:2px}
@media(max-width:899px){.ai-companion-host{grid-template-columns:minmax(0,1fr);grid-template-rows:minmax(0,var(--ai-ratio,.42fr)) 14px minmax(0,var(--ai-other,.58fr));padding:8px}.ai-companion-divider{cursor:row-resize}.ai-companion-divider:after{top:6px;left:40%;width:20%;height:2px}.ai-companion-fab{right:16px}}
.design-web .quote-source-marker{position:fixed;z-index:44;display:grid;place-items:center;width:22px;height:22px;padding:0;border:2px solid white;border-radius:50%;background:#356bd8;color:white;font-size:12px;font-weight:600;line-height:1;box-shadow:0 1px 4px #0003;cursor:pointer}
::highlight(composer-quotes){background:#dae6ff;color:#172b4d}
.design-web .composer textarea::placeholder{color:#737373}
.design-web .workspace-error{padding:16px;color:#737373}
.design-web .private-splitter:after{opacity:1}
@media(max-width:900px){body.design-web #chatPage.has-private-panel>.conversation{grid-column:1!important;grid-row:1!important;min-height:0!important}body.design-web #chatPage.has-private-panel>#privatePanel{position:relative!important;inset:auto!important;grid-column:1!important;grid-row:3!important;min-height:0!important}body.design-web #chatPage.has-private-panel>.private-splitter:not([hidden]){display:block!important;grid-column:1!important;grid-row:2!important}}
@media(max-width:900px){.design-web #chatPage.has-private-panel:not([hidden]){display:grid;grid-template-columns:minmax(0,1fr);grid-template-rows:minmax(140px,var(--private-top-fr,.5fr)) 14px minmax(140px,var(--private-bottom-fr,.5fr));gap:0;height:100%;min-height:0}.design-web #chatPage.has-private-panel .conversation,.design-web #chatPage.has-private-panel.private-on-right .conversation{grid-column:1;grid-row:1;min-height:0}.design-web #chatPage.has-private-panel .private-panel,.design-web #chatPage.has-private-panel.private-on-right .private-panel{position:relative;inset:auto;grid-column:1;grid-row:3;min-height:0;z-index:auto}.design-web .private-splitter:not([hidden]){display:block;grid-column:1;grid-row:2;cursor:row-resize}.design-web .private-splitter:after{left:calc(50% - 22px);top:5px;width:44px;height:4px}}
@media(max-width:650px){.design-web .workspace-library{grid-template-columns:110px minmax(0,1fr);gap:12px}.design-web .workspace-file-row{padding:14px 10px}.design-web .heading h1{font-size:19px}.design-web .workspace-companion .workspace-library{display:block}}
.design-web:has(.app.sidebar-collapsed)>.exam{left:0;bottom:0}
@media(max-width:650px){.design-web .app .main,.design-web .app:has(#chatPage:not([hidden])) .main{padding:0 16px 12px}.design-web #navHistory{left:16px}.design-web .bank-card{padding:16px;min-height:230px;border-radius:24px}.design-web .bank-card h3{font-size:14px}.design-web .bank-grid,.design-web .plan-grid{gap:10px}.design-web .bank-controls{gap:8px}.design-web .bank-controls select{max-width:110px}.design-web .bank-subjects button{padding:10px 12px}.design-web .practice-filters button{padding:10px 12px}.design-web .chat-page .messages{padding-left:4px;padding-right:4px}}

/* Modal width belongs to the outer surface, never a viewport-sized inner body. */
.design-web #auth{background:#fafafa;backdrop-filter:none;overflow:auto}
.design-web #auth .auth-layout{display:flex;align-items:center;justify-content:center;width:100%;max-width:none;min-height:100dvh;margin:0;padding:24px 16px;gap:0;background:none}
.design-web #auth .auth-form-panel{width:min(440px,100%);min-width:0;margin:auto}
.design-web #auth .auth-card{width:100%;padding:32px;background:#fff;border:0;border-radius:28px;box-shadow:none}
@media(max-width:650px){.design-web #auth .auth-card{padding:28px 24px}}
.design-web .workspace-file-item{display:flex;align-items:center;background:#fff;border-radius:18px;margin:8px 0;min-width:0}
.design-web .workspace-file-item>.workspace-file-row{flex:1;min-width:0;width:auto;margin:0}
.design-web .workspace-file-delete{display:grid;place-items:center;flex:0 0 36px;width:36px;height:44px;padding:8px;margin-right:4px;background:transparent}
.design-web .workspace-file-delete svg{width:18px;height:18px;fill:none;stroke:currentColor;stroke-width:1.5;stroke-linecap:round;stroke-linejoin:round}
.design-web #dialog{padding:16px;align-items:center;justify-content:center}
.design-web #dialog>.modal{width:min(560px,calc(100vw - 32px));max-width:100%;min-width:0;max-height:calc(100dvh - 32px);margin:0;overflow:auto;padding:24px;border-radius:28px;background:#fff}
.design-web #dialog:has(.profile-sheet,.personalization-sheet)>.modal{width:min(520px,calc(100vw - 32px));max-width:calc(100vw - 32px)}
.design-web #dialog #dialogBody{width:100%;max-width:100%;min-width:0;max-height:none;overflow:visible;overflow-wrap:anywhere}
.design-web #dialog:has(.report-generation)>.modal{width:min(520px,100%)}
.design-web #dialogBody.report-generation select{display:block;width:100%;min-height:48px;padding:10px 12px;border:1px solid #ddd;border-radius:12px;background:#f5f5f5;color:#171717;font:inherit}
.design-web #dialog .profile-sheet{padding:0}
.design-web #dialog .row{min-width:0;gap:12px}
.design-web #dialogTitle{min-width:0;font-size:22px;overflow-wrap:anywhere}
.design-web #closeDialog{flex:none}
.design-web #dialog #closeDialog{display:grid;place-items:center;width:44px;height:44px;min-width:44px;padding:12px;border:0;border-radius:50%;background:#f3f3f3;color:#171717;line-height:1}
.design-web #closeDialog svg{width:20px;height:20px;fill:none;stroke:currentColor;stroke-width:1.8;stroke-linecap:round}
.design-web #dialogBody>.primary,.design-web #dialogBody>.dialog-cancel{display:flex;align-items:center;justify-content:center;width:100%;min-height:44px;padding:12px 20px;border:0;border-radius:26px;margin:12px 0 0;font-size:14px;line-height:20px;box-shadow:none}
.design-web #dialogBody .dialog-cancel{background:#c93636;color:#fff;text-align:center;border:0;border-radius:26px;min-height:44px}
.design-web #dialogBody .dialog-cancel:hover:not(:disabled){background:#b52e2e;color:#fff}
.design-web #dialogBody>.primary{background:#171717;color:#fff}
.design-web #dialog .usage-amount{font-size:clamp(12px,3.2vw,20px);font-weight:600;margin:8px 0;white-space:nowrap;letter-spacing:-.3px}
.design-web #dialog .usage-model{min-width:0;padding:16px 12px;margin-top:12px}
@media(max-width:650px){.design-web #dialog>.modal{padding:20px 16px}.design-web #dialog .usage-model{padding:12px 8px}}
.design-web #privatePanel .workspace-companion,.design-web #privatePanel .private-practice:not(.is-answering){container-type:inline-size;background:#fafafa}
.design-web #privatePanel .companion-practice-grid{display:grid;grid-template-columns:1fr;gap:16px}
.design-web #privatePanel .private-practice-card{display:flex;flex-direction:column;gap:12px;min-width:0;min-height:200px;margin:0;padding:24px 24px 20px;border:1px solid #eee;border-radius:26px;background:#fff;box-shadow:none;backdrop-filter:none}
.design-web #privatePanel .private-practice-card h3{font-size:17px;margin:0;padding-right:32px}
.design-web #privatePanel .private-practice-card p{font-size:13px;margin:0;color:#737373}
.design-web #privatePanel .private-practice-card>.primary{width:auto;min-height:44px;align-self:flex-end;margin-top:auto;padding:10px 20px;background:#171717;color:#fff}
.design-web .plan .practice-card-actions{display:flex;align-items:center;justify-content:flex-end;gap:8px;margin-top:auto;align-self:stretch}
.design-web .plan .practice-card-actions>button{margin:0;min-height:44px;width:auto;flex:0 0 auto}
.design-web .plan .practice-card-actions>.practice-duration-button{padding:8px 12px;background:#f2f2f2;color:#525252;border:0;border-radius:20px;font-size:12px}
.design-web #practicePage{container-type:inline-size}
@container(max-width:620px){
  .design-web #plans{grid-template-columns:minmax(0,1fr)}
  .design-web #plans .plan,.design-web #privatePanel .private-practice-card{min-height:0;padding:16px;border-radius:22px;gap:10px}
  .design-web #plans .plan .plan-mark{display:none}
  .design-web #plans .plan h3,.design-web #privatePanel .private-practice-card h3{font-size:16px;line-height:1.5;margin:0;padding-right:28px}
  .design-web #plans .plan p,.design-web #privatePanel .private-practice-card p{font-size:12px;margin:0}
  .design-web #plans .practice-card-actions,.design-web #privatePanel .private-practice-card .practice-card-actions{margin-top:2px}
}
.design-web #privatePanel .gallery-card{border:1px solid #eee}
.design-web #privatePanel .gallery-grid{width:100%;max-width:none}
@container(min-width:620px){.design-web #privatePanel .workspace-doc-grid,.design-web #privatePanel .gallery-grid,.design-web #privatePanel .companion-practice-grid{grid-template-columns:repeat(2,minmax(0,1fr))}}
/* Preserve centering in every state: generic button hover/active transforms must not win. */
.design-web :is(#chatPage,.ai-companion-chat) .scroll-latest,
.design-web :is(#chatPage,.ai-companion-chat) .scroll-latest:hover:not(:disabled),
.design-web :is(#chatPage,.ai-companion-chat) .scroll-latest:active:not(:disabled),
.design-web :is(#chatPage,.ai-companion-chat) .scroll-latest:focus{
  left:50%;top:-52px;width:44px;height:44px;padding:0;transform:translateX(-50%);
  background:#fff;color:#171717;border:1px solid #eee;opacity:1;
  box-shadow:0 2px 10px #00000008;backdrop-filter:none;-webkit-tap-highlight-color:transparent;
}
/* Pad parity: a shared header baseline and explicit controls override legacy theme IDs. */
body.design-web{--page-gutter:24px;--chat-width:880px;--header-height:84px;--control-size:48px}
.design-web .app .main,.design-web .app:has(#chatPage:not([hidden])) .main{padding:env(safe-area-inset-top,0px) max(var(--page-gutter),env(safe-area-inset-right,0px)) max(16px,env(safe-area-inset-bottom,0px)) max(var(--page-gutter),env(safe-area-inset-left,0px))}
.design-web .app .main>.heading{flex:0 0 var(--header-height);height:var(--header-height);min-height:var(--header-height);margin:0;padding:0 64px}
.design-web .app[data-page=practice] .main>.heading{padding-right:0;gap:0}
.design-web .app[data-page=practice] .heading-title{display:none}
.design-web .app[data-page=practice] .heading>#practiceFilters{flex:0 1 auto;max-width:100%;min-width:0;box-shadow:none;border:0}
.design-web .app[data-page=chat] .main>.heading{display:none!important;flex-basis:0;height:0;min-height:0;padding:0;margin:0;overflow:hidden}
.design-web #navHistory,.design-web #chatPage>.private-toggle{position:fixed;top:calc(env(safe-area-inset-top,0px) + 18px);width:var(--control-size);height:var(--control-size);display:grid;place-items:center;padding:12px;border:0;border-radius:50%;background:#fff;box-shadow:none;backdrop-filter:none}
.design-web #navHistory{left:max(var(--page-gutter),env(safe-area-inset-left,0px))}
.design-web .main:has(#chatPage) #navHistory,
.design-web .main:has(#chatPage) #navHistory:hover:not(:disabled),
.design-web .main:has(#chatPage) #navHistory:active:not(:disabled),
.design-web .main:has(#chatPage) #navHistory:focus{background:#fff;color:#171717;box-shadow:none;transform:none;transition:none;-webkit-tap-highlight-color:transparent}
.design-web #chatPage>.private-toggle{right:max(var(--page-gutter),env(safe-area-inset-right,0px))}
.design-web #chatPage>.private-toggle svg{width:24px;height:24px}
.design-web #chatPage{overflow:hidden;position:relative}
.design-web #chatPage>.conversation{min-width:0;min-height:0;overflow:hidden}
.design-web :is(#chatPage,.ai-companion-chat) .messages{min-height:0;padding:20px max(12px,calc((100% - var(--chat-width))/2)) 24px;scrollbar-gutter:stable both-edges}
.design-web :is(#chatPage,.ai-companion-chat) .messages .bubble{line-height:1.75;overflow-wrap:anywhere}
.design-web :is(#chatPage,.ai-companion-chat) .messages .msg .bubble{font-size:18px;line-height:1.8}
.design-web :is(#chatPage,.ai-companion-chat) .messages .activity{font-size:14px;line-height:1.65}
.design-web :is(#chatPage,.ai-companion-chat) .activity{margin-left:0;color:#737373}
.design-web :is(#chatPage,.ai-companion-chat) .composer-wrap{width:min(var(--chat-width),100%);margin:0 auto;padding:8px 0 0;flex-shrink:0}
.design-web :is(#chatPage,.ai-companion-chat) .conversation .composer{display:grid;grid-template-columns:44px minmax(0,1fr) 44px 44px 44px;align-items:center;gap:8px;padding:12px;border:1px solid #fff;border-radius:36px;background:#fff;box-shadow:0 4px 18px #00000004;backdrop-filter:none}
.design-web :is(#chatPage,.ai-companion-chat) .composer #chips:empty{display:none}
.design-web :is(#chatPage,.ai-companion-chat) .conversation .composer{row-gap:0}
.design-web :is(#chatPage,.ai-companion-chat) .composer #chips:not(:empty){margin-bottom:8px}
.design-web :is(#chatPage,.ai-companion-chat) .composer #chips{display:flex;flex-wrap:nowrap;gap:8px;max-width:100%;overflow-x:auto;padding:4px 2px 8px}
.design-web :is(#chatPage,.ai-companion-chat) .composer .composer-context{grid-column:1/-1;grid-row:1;display:flex;align-items:flex-end;flex-wrap:wrap;gap:10px;min-width:0;max-height:220px;overflow:auto;padding:4px 2px 10px;scrollbar-width:none}
.design-web :is(#chatPage,.ai-companion-chat) .composer .composer-context::-webkit-scrollbar{display:none}
.design-web :is(#chatPage,.ai-companion-chat) .composer .composer-context:not(:has(.chip)):has(.quote-draft[hidden]){display:none}
.design-web :is(#chatPage,.ai-companion-chat) .composer .composer-context #chips{display:contents;margin:0;padding:0}
.design-web :is(#chatPage,.ai-companion-chat) .composer .composer-context .quote-draft{flex:none;margin:0}
.design-web :is(#chatPage,.ai-companion-chat) .composer .composer-context #chips .chip{flex-shrink:0;margin:0}
.design-web :is(#chatPage,.ai-companion-chat) #chips .chip:not(.image-chip){display:flex;align-items:center;gap:10px;flex:0 0 240px;max-width:calc(100% - 4px);min-width:0;height:64px;padding:10px;border:1px solid #eaeaea;border-radius:16px;background:#f7f7f7;color:#171717;white-space:normal}
.design-web .draft-file-icon{display:grid;place-items:center;flex:0 0 32px;width:32px;height:40px;border-radius:10px;background:#eee;color:#525252}
.design-web .draft-file-icon svg{width:22px;height:22px;fill:none;stroke:currentColor;stroke-width:1.7;stroke-linecap:round;stroke-linejoin:round}
.design-web .draft-file-info{display:flex;flex-direction:column;gap:3px;min-width:0;flex:1}
.design-web .draft-file-name{overflow:hidden;text-overflow:ellipsis;white-space:nowrap;font-size:13px;line-height:20px}
.design-web .draft-file-info small{font-size:11px;line-height:16px;color:#737373}
.design-web :is(#chatPage,.ai-companion-chat) #chips .chip:not(.image-chip)>button{display:grid;place-items:center;flex:0 0 32px;width:32px;height:40px;padding:6px;margin:0;border-radius:10px;background:transparent;color:#525252}
.design-web :is(#chatPage,.ai-companion-chat) #chips .chip:not(.image-chip)>button svg{width:18px;height:18px}
.design-web :is(#chatPage,.ai-companion-chat) .composer .voice-status{grid-column:1/-1}
.design-web :is(#chatPage,.ai-companion-chat) .composer textarea{min-width:0;width:100%;min-height:44px;max-height:none;field-sizing:content;overflow:hidden;padding:9px 0;margin:0;line-height:26px;font-size:16px;border:0;background:transparent;resize:none}
.design-web :is(#chatPage,.ai-companion-chat) .composer textarea::placeholder{color:#737373}
.design-web :is(#chatPage,.ai-companion-chat) .composer-foot #attach,.design-web :is(#chatPage,.ai-companion-chat) .composer-foot #voiceInput,.design-web :is(#chatPage,.ai-companion-chat) .composer-foot #send{display:grid;place-items:center;width:44px;height:44px;min-width:44px;padding:0;margin:0;border:0;border-radius:50%;box-shadow:none;backdrop-filter:none}
.design-web :is(#chatPage,.ai-companion-chat) .composer-foot #attach,.design-web :is(#chatPage,.ai-companion-chat) .composer-foot #voiceInput{background:transparent;color:#171717}
.design-web :is(#chatPage,.ai-companion-chat) .composer-foot #send{background:#171717;color:#fff;border:0;box-shadow:none;backdrop-filter:none}
.design-web :is(#chatPage,.ai-companion-chat) .composer-foot #send:hover:not(:disabled){background:#303030;color:#fff;box-shadow:none;transform:none}
.design-web :is(#chatPage,.ai-companion-chat) .composer-foot #send:active:not(:disabled){background:#444;color:#fff;box-shadow:none;transform:none}
.design-web :is(#chatPage,.ai-companion-chat) .composer-foot #send:focus-visible{outline:2px solid #737373;outline-offset:3px}
.design-web :is(#chatPage,.ai-companion-chat) .composer-foot button:not(.context-meter-button) svg{width:24px;height:24px;margin:auto}
.design-web :is(#chatPage,.ai-companion-chat) .composer-foot .stop-run{grid-column:1/-1;grid-row:auto;justify-self:end}
.design-web #chatPage #privatePanel{border:1px solid #fff;border-radius:32px;background:#fff;box-shadow:0 8px 28px #00000004;backdrop-filter:none;overflow:hidden}
.design-web #chatPage #privatePanel .private-head{flex-shrink:0;min-height:68px;padding:10px 18px;gap:12px;background:#fff;border-bottom:1px solid #eee}
.design-web #privatePanel .private-head-actions{align-items:center;gap:8px}
.design-web #privatePanel .private-head-actions button{display:grid;place-items:center;width:44px;height:44px;min-width:44px;padding:10px;border:0;border-radius:50%;background:#fafafa;box-shadow:none;backdrop-filter:none}
.design-web #privatePanel .private-head-actions svg{width:22px;height:22px}
.design-web #chatPage #privatePanel.practice-toolbar-merged>.private-head{display:none}
.design-web #privatePanel.practice-toolbar-merged .exam-header{gap:6px;padding:8px 12px}
.design-web #privatePanel.practice-toolbar-merged .private-head-actions{display:flex;flex:0 0 auto;margin-left:0}
.design-web #privatePanel.has-live-content .private-head-actions .private-toggle{display:none}
.design-web #privatePanel.practice-toolbar-merged .private-layout-toggle{display:none}
.design-web #privatePanel.practice-toolbar-merged .exam-header .exam-meta{min-width:0;flex:1}
.design-web #privatePanel.practice-toolbar-merged .exam-header #examTitle{overflow:hidden;text-overflow:ellipsis;white-space:nowrap}
.design-web #privatePanel.practice-toolbar-merged .ink-toolbar{gap:6px;overflow-x:auto;flex-wrap:nowrap}
.design-web #privatePanel.practice-toolbar-merged .ink-toolbar button{flex-shrink:0}
.design-web #privatePanel.practice-toolbar-merged .ink-toolbar .private-head-actions button{background:#454545;color:#fff}
.design-web #privatePanel.practice-toolbar-merged .paper{padding-top:16px}
.design-web #chatPage:not(.private-on-right) #privatePanel.practice-toolbar-merged :is(.exam-header,.ink-toolbar){padding-left:64px}
.design-web #privatePanel .private-content>*,.design-web #privatePanel .workspace-document{max-width:960px;margin-left:auto;margin-right:auto;overflow-wrap:anywhere}
.design-web #privatePanel .workspace-companion{overscroll-behavior:contain;scrollbar-gutter:stable}

.design-web #exam .answer-sheet-close,.design-web #exam .exam-note-panel .close{display:grid;place-items:center;width:44px;height:44px;min-width:44px;padding:0;border:0;line-height:1;box-sizing:border-box}
.design-web #exam .answer-sheet-close svg,.design-web #exam .exam-note-panel .close svg{display:block;width:22px;height:22px;margin:0;fill:none;stroke:currentColor;stroke-width:1.7;stroke-linecap:round}
.design-web #exam .exam-header button,.design-web #exam .ink-toolbar button{display:grid;place-items:center;padding:0;line-height:1}
.design-web #exam .exam-header button svg,.design-web #exam .ink-toolbar button svg{display:block;margin:0}
.design-web #exam #submit,.design-web #exam .pause-card .primary{display:flex;align-items:center;justify-content:center;min-height:44px;padding:10px 16px;line-height:24px;text-align:center}
.design-web #exam .answer-grid button{display:grid;place-items:center;padding:0;line-height:1}
.design-web #exam #saveState[hidden]{display:none!important}
.design-web button:focus-visible,.design-web textarea:focus-visible,.design-web select:focus-visible{outline:2px solid #737373;outline-offset:3px}
.design-web :is(#chatPage,.ai-companion-chat) .composer #input,.design-web :is(#chatPage,.ai-companion-chat) .composer #input:focus,.design-web :is(#chatPage,.ai-companion-chat) .composer #input:focus-visible{outline:none;border:0;box-shadow:none;background:transparent}
/* Larger reading type, including the floating AI companion. Keep icons and grid geometry unchanged. */
body.design-web :is(#chatPage,.ai-companion-chat) .messages .msg .bubble{font-size:var(--reading-size,19px);line-height:1.8}
body.design-web #exam .material{font-size:var(--reading-size,19px)}
body.design-web #exam .stem{font-size:var(--reading-size,20px)}
body.design-web #exam .option-content{font-size:var(--reading-size,17px)}
body.design-web :is(#chatPage,.ai-companion-chat) .composer textarea{font-size:var(--reading-size,17px);line-height:1.6}
body.design-web .workspace-document,
body.design-web .learning-document,
body.design-web #fileBrowser .managed-content>.learning-document,
body.design-web #privatePanel .private-content{font-size:var(--reading-size,17px);line-height:1.85}
body.design-web :is(.msg.assistant .bubble,.workspace-document,.learning-document,#exam .material,#exam .stem,#exam .option-content,.composer textarea){color:var(--reading-color,#171717)}
.design-web #dialog .profile-avatar-row{display:flex;align-items:center;gap:20px;margin:8px 0 12px}
.design-web #dialog .profile-avatar-row .profile-avatar{width:76px;height:76px;margin:0;flex:none}
.design-web #dialog .profile-avatar-row .workspace-actions{gap:8px;flex-wrap:wrap}
.design-web #dialog .profile-avatar-row button{background:#f2f2f2;min-height:44px;padding:10px 18px}
.design-web #dialog .profile-sheet label{font-size:14px;color:#444}
.design-web #dialog .profile-sheet input{min-height:48px;border-radius:14px}
.design-web #dialog .profile-sheet small{font-size:13px;line-height:1.6;color:#666}
.design-web #dialog .profile-form-actions{display:flex;gap:12px;margin-top:12px}
.design-web #dialog .profile-form-actions button{flex:1;min-width:0;height:48px;min-height:48px;margin:0;padding:12px;border-radius:14px;box-sizing:border-box}
.design-web #dialog .profile-form-actions .dialog-cancel{background:#efefef;color:#333}
.design-web #dialog .profile-form-actions .primary{background:#171717;color:#fff}
.design-web #dialog .preference-status:empty{display:none}
.design-web #dialog .personalization-sheet{display:flex;flex-direction:column;gap:14px;padding-top:16px}
.design-web #dialog .personalization-sheet select{width:100%;padding:12px;border:1px solid #ddd;border-radius:12px;background:#f7f7f7;color:#171717;min-height:44px}
.design-web #dialog .reading-colors{display:flex;flex-wrap:wrap;gap:8px}
.design-web #dialog .reading-setting-row{display:flex;align-items:center;justify-content:space-between;gap:16px;min-height:44px}
.design-web #dialog .reading-size-value{font-size:13px;color:#737373;font-variant-numeric:tabular-nums}
.design-web #dialog input.reading-size-slider{width:100%;height:32px;min-height:32px;margin:0;padding:0;accent-color:#222;cursor:pointer;background:transparent;box-shadow:none}
.design-web #dialog .reading-color-menu{position:relative}
.design-web #dialog .reading-color-menu summary{display:flex;align-items:center;gap:8px;min-height:44px;padding:8px 14px;border:1px solid #ddd;border-radius:22px;background:#f5f5f5;cursor:pointer;list-style:none}
.design-web #dialog .reading-color-menu summary::-webkit-details-marker{display:none}
.design-web #dialog .reading-color-menu summary:before,.design-web #dialog .reading-color-option:before{content:'';width:12px;height:12px;flex:none;border-radius:50%;background:var(--swatch);border:1px solid #0001}
.design-web #dialog .reading-color-options{position:absolute;right:0;top:calc(100% + 6px);z-index:2;width:190px;max-height:280px;overflow:auto;padding:6px;background:#fff;border:1px solid #e5e5e5;border-radius:16px;box-shadow:0 8px 28px #0002}
.design-web #dialog .reading-color-options button{display:flex;align-items:center;gap:10px;width:100%;min-height:44px;padding:8px 12px;border:0;background:transparent;border-radius:9px;text-align:left;box-shadow:none;transform:none}
.design-web #dialog .reading-color-options button:hover{background:#f3f3f3}
.design-web #dialog .reading-color-option[aria-pressed=true]:after{content:'✓';margin-left:auto}
.design-web #dialog .reading-custom-row{display:flex;align-items:center;justify-content:space-between;gap:12px}
.design-web #dialog .reading-custom-row[hidden]{display:none}
.design-web #dialog .reading-custom-color{width:64px;height:44px;min-height:44px;padding:4px;cursor:pointer;border:1px solid #ddd;border-radius:10px;background:#fff}
.design-web #dialog .reading-color{display:flex;align-items:center;gap:6px;min-height:44px;padding:8px 12px;border:1px solid #ddd;border-radius:12px;background:#fff;color:#333}
.design-web #dialog .reading-color:before{content:'';width:14px;height:14px;border-radius:50%;background:var(--swatch)}
.design-web #dialog .reading-color[aria-pressed=true]{border:2px solid #333;padding:7px 11px;background:#f0f0f0;font-weight:600}
.design-web #dialog .reading-preview{padding:18px;border-radius:16px;background:#fafafa;border:1px solid #e8e8e8;line-height:1.8}
.design-web #dialog .reading-preview p{font-size:inherit;color:inherit;line-height:inherit;margin:8px 0 0}
.design-web #dialog .reading-reset{align-self:flex-start;min-height:44px;background:transparent;color:#555;border:0;padding:6px 0;text-decoration:underline}
@media(max-width:400px){.design-web #dialog .profile-avatar-row{gap:12px}.design-web #dialog .profile-avatar-row button{padding:8px 12px}}
@media(min-width:1000px){body.design-web{--chat-width:1040px}}
@media(min-width:1550px){body.design-web{--chat-width:1200px}}
.design-web #chatPage:not(.has-private-panel) .messages{padding-left:0;padding-right:0}
.design-web #chatPage:not(.has-private-panel) .messages>*{width:min(var(--chat-width),calc(100% - 24px));max-width:var(--chat-width);margin-left:auto;margin-right:auto;box-sizing:border-box}
@media(max-width:650px){
  body.design-web{--page-gutter:16px;--header-height:80px}
  .design-web :is(#chatPage,.ai-companion-chat) .messages{padding:12px 4px 20px}
  .design-web :is(#chatPage,.ai-companion-chat) .conversation .composer{column-gap:4px;row-gap:0;padding:10px;border-radius:34px}
  .design-web #chatPage #privatePanel{border-radius:24px}
  .design-web #chatPage #privatePanel .private-head{padding:8px 12px;gap:8px;min-height:60px}
  .design-web #privatePanel .private-head-actions{gap:4px}

}
.managed-library{display:flex;flex-direction:column;min-height:0;height:100%;width:100%}.managed-toolbar{display:flex;align-items:center;gap:8px;padding:8px;flex-wrap:wrap}.managed-path{flex:1;min-width:80px;overflow-wrap:anywhere;font-size:14px}.managed-columns{display:flex;min-height:0;flex:1;gap:12px}.managed-tree{width:160px;flex:0 0 160px;background:white;border-radius:16px;padding:6px;overflow:auto}.managed-tree-row{display:block;width:100%;min-height:42px;padding:10px;text-align:left;border:0;background:transparent;border-radius:8px;overflow-wrap:anywhere}.managed-tree-row.active{background:#e7e7e7}.managed-tree-row:active{background:#d5d5d5}.managed-content{flex:1;min-width:0;overflow:auto;padding:8px}.managed-file{display:flex;align-items:center;gap:8px;margin-bottom:8px;padding:8px;border:1px solid #e4e4e4;border-radius:14px;background:white}.managed-open{flex:1;min-width:0;text-align:left;overflow-wrap:anywhere;border:0;background:transparent}.managed-editor{display:block;width:100%;min-height:300px;height:55vh;box-sizing:border-box;resize:vertical;padding:14px;font:16px/1.6 monospace;border:1px solid #ccc;border-radius:12px}.managed-tree[hidden]{display:none}.managed-toolbar button{min-height:40px}.managed-pdf-page{position:relative;width:100%;background:#fff;margin-bottom:12px;overflow:hidden;box-shadow:0 1px 4px #0001}.managed-pdf-page>.document-image{display:block;width:100%;height:100%;max-width:none;object-fit:contain;margin:0}.managed-page-status{position:absolute;inset:0;display:grid;place-items:center;color:#737373;font-size:13px}#privatePanel .managed-tree{width:130px;flex-basis:130px}@media(max-width:500px){.managed-tree{width:115px;flex-basis:115px}.managed-columns{gap:6px}.managed-content{padding:4px}}
.design-web .context-meter{position:relative;display:flex;align-items:center;flex:none;grid-column:3;grid-row:2}
.design-web .context-meter[hidden]{display:none}
.design-web .context-meter-button{display:grid;place-items:center;width:44px;height:44px;padding:0;border:0;background:transparent;border-radius:50%}
.design-web .context-meter-button:hover:not(:disabled),.design-web .context-meter-button:active:not(:disabled){transform:none;box-shadow:none}
.design-web .context-ring{display:block;flex:0 0 18px;width:18px;height:18px;line-height:0}
.design-web .context-meter-button .context-ring svg{display:block;width:18px;height:18px;margin:0;fill:none;stroke-width:3}
.design-web .context-ring-track{stroke:#ddd}
.design-web .context-ring-progress{stroke:#333;stroke-dasharray:var(--context-progress,0) 100;transform:rotate(-90deg);transform-origin:12px 12px}
.design-web .is-unknown .context-ring-progress{stroke-dasharray:0 100}
.design-web .context-tip{display:none;position:absolute;right:0;bottom:calc(100% + 10px);width:210px;padding:10px 12px;background:#111;color:#fff;border-radius:12px;box-shadow:0 4px 18px #0002;z-index:80;font-size:12px;line-height:1.6;text-align:center;pointer-events:none}
.design-web .context-tip span,.design-web .context-tip strong{display:block}
.design-web .context-tip strong{font-weight:400;color:#aaa}
.design-web .context-meter.is-open .context-tip{display:block}
.design-web .is-compacting .context-ring{animation:context-spin 1s linear infinite;transform-origin:center}
.design-web .is-compacting .context-ring-progress{stroke-dasharray:25 100}
@keyframes context-spin{to{transform:rotate(360deg)}}

/* One in-flow navigation row for full pages and both companion hosts. */
.workspace-navigation{display:grid;grid-template-columns:minmax(48px,1fr) minmax(0,360px) minmax(48px,1fr);align-items:center;gap:12px;min-width:0;min-height:56px;flex:1;position:relative;z-index:15}
.workspace-navigation>button{display:grid;place-items:center;flex:0 0 44px;width:44px;height:44px;padding:10px;border:0;background:transparent;border-radius:50%;color:#171717}
.workspace-navigation>button svg{width:24px;height:24px}
.workspace-navigation-segments{display:flex;align-items:center;grid-column:2;grid-row:1;min-width:0;background:#eee;border-radius:28px;padding:3px}
.workspace-nav-picker{position:relative;flex:1;min-width:0}
.workspace-nav-picker>button{width:100%;height:44px;padding:8px 12px;border:0;border-radius:24px;background:transparent;color:#737373;font:inherit;white-space:nowrap;overflow:hidden;text-overflow:ellipsis}
.workspace-nav-picker.is-selected>button{background:#fff;color:#171717;font-weight:600}
.workspace-nav-menu{position:absolute;top:calc(100% + 8px);left:0;z-index:25;width:220px;max-width:75vw;max-height:45vh;overflow:auto;background:#fff;border:1px solid #eee;border-radius:16px;padding:6px;box-shadow:0 6px 20px #0002}
.workspace-nav-menu button{display:block;width:100%;min-height:44px;padding:10px;border:0;background:transparent;text-align:left;border-radius:10px;color:#171717}
.workspace-nav-menu button:hover{background:#eee}
.workspace-navigation .workspace-navigation-close{grid-column:3;grid-row:1;justify-self:end}
.workspace-navigation .workspace-navigation-swap{grid-column:3;grid-row:1;justify-self:end;margin-right:48px}
.workspace-navigation>button:hover{transform:none}
.workspace-full-navigation{display:none}
.design-web .app[data-page=vocabulary] .main>.heading{height:auto;min-height:64px;flex-basis:auto;padding:4px 16px;margin:0}
.design-web .app[data-page=vocabulary] .main>.heading>.heading-title{display:none}
.design-web .app[data-page=vocabulary] .workspace-full-navigation{display:grid;width:100%}
.design-web .app[data-page=vocabulary] #navHistory,
.design-web:has(#chatPage.has-private-panel:not([hidden])>#privatePanel:not(.practice-toolbar-merged)) #navHistory{display:none!important}
.design-web #chatPage #privatePanel:not(.practice-toolbar-merged) .private-head{flex-wrap:nowrap;padding:4px 12px;gap:4px;min-height:64px;overflow:visible}
.design-web #privatePanel:not(.practice-toolbar-merged) .private-head-actions .private-toggle{display:none}
.design-web #chatPage>.workspace-navigation{display:none}
.design-web #chatPage.has-private-panel:has(>#privatePanel:not(.practice-toolbar-merged)){grid-template-rows:64px minmax(0,1fr)}
.design-web #chatPage.has-private-panel:has(>#privatePanel:not(.practice-toolbar-merged))>.workspace-navigation{display:grid;grid-column:1/-1;grid-row:1;grid-template-columns:minmax(100px,1fr) minmax(0,360px) minmax(100px,1fr);padding:0 12px}
.design-web #chatPage.has-private-panel:has(>#privatePanel:not(.practice-toolbar-merged))>.conversation,.design-web #chatPage.has-private-panel:has(>#privatePanel:not(.practice-toolbar-merged))>#privatePanel,.design-web #chatPage.has-private-panel:has(>#privatePanel:not(.practice-toolbar-merged))>.private-splitter{grid-row:2}
.design-web #chatPage #privatePanel:not(.practice-toolbar-merged)>.private-head{display:none}
.ai-companion-host.with-workspace-navigation{grid-template-rows:64px minmax(0,1fr)}
.with-workspace-navigation>.workspace-navigation{grid-column:1/-1;grid-row:1}
.ai-companion-host.with-workspace-navigation>.ai-companion-chat,.ai-companion-host.with-workspace-navigation>.ai-companion-content{padding-top:0;grid-row:2}
.with-workspace-navigation>.ai-companion-divider{grid-row:2}
@media(max-width:899px){.ai-companion-host.with-workspace-navigation{grid-template-rows:64px minmax(0,var(--ai-ratio,.42fr)) 14px minmax(0,var(--ai-other,.58fr))}.ai-companion-host.with-workspace-navigation>.ai-companion-chat{grid-row:2}.with-workspace-navigation>.ai-companion-divider{grid-row:3}.ai-companion-host.with-workspace-navigation>.ai-companion-content{grid-row:4}}
@media(max-width:500px){.workspace-navigation{gap:4px}.workspace-nav-picker>button{padding:8px 4px;font-size:14px}.workspace-navigation-segments{flex:1}.design-web .app[data-page=vocabulary] .main>.heading{padding:4px 0}}
@media(max-width:900px){
  .design-web #chatPage.has-private-panel:has(>#privatePanel:not(.practice-toolbar-merged)){grid-template-rows:64px minmax(140px,var(--private-top-fr,.5fr)) 14px minmax(140px,var(--private-bottom-fr,.5fr))}
  body.design-web #chatPage.has-private-panel:has(>#privatePanel:not(.practice-toolbar-merged))>.conversation{grid-row:2!important}
  body.design-web #chatPage.has-private-panel:has(>#privatePanel:not(.practice-toolbar-merged))>.private-splitter:not([hidden]){grid-row:3!important}
  body.design-web #chatPage.has-private-panel:has(>#privatePanel:not(.practice-toolbar-merged))>#privatePanel{grid-row:4!important}
}
@media(max-width:500px){.design-web #chatPage.has-private-panel:has(>#privatePanel:not(.practice-toolbar-merged))>.workspace-navigation{grid-template-columns:44px minmax(0,1fr) 44px;padding:0}.workspace-navigation .workspace-navigation-swap{display:none}}
@media(prefers-reduced-motion:reduce){.design-web .is-compacting .context-ring{animation:none}}

/* Document reading uses the available panel, including narrow AI split panes. */
.design-web .managed-content{container-type:inline-size}
.design-web .managed-content>.learning-document{max-width:none;width:100%;margin:8px 0;padding:0 8px;line-height:1.65}
.managed-content>.learning-document p{margin:0 0 .65em}
.managed-content>.learning-document :is(h1,h2,h3){margin:.8em 0 .4em}
.managed-content>.learning-document>:first-child{margin-top:0}
.managed-content .managed-reading-table{width:100%;table-layout:fixed;min-width:0}
.managed-reading-table :is(td,th){overflow-wrap:anywhere;vertical-align:top}
@container (max-width:680px){
.managed-content .markdown-table{overflow:visible}
.managed-reading-table,.managed-reading-table tbody{display:block;width:100%}
.managed-reading-table thead,.managed-reading-table colgroup{display:none}
.managed-reading-table tbody tr{display:block;border:1px solid #e5e5e5;border-radius:14px;padding:12px;margin:10px 0;background:#fff}
.managed-content .managed-reading-table td{display:block;border:0;padding:6px 0;width:auto;white-space:normal;text-align:left!important}
.managed-reading-table td:before{content:attr(data-field);display:block;font-size:.85em;color:#737373;margin-bottom:3px}
}

/* Personal space: shared file-manager layout for standalone and split panels. */
.managed-toolbar{gap:8px;padding:8px 0 14px;border-bottom:1px solid #e8e8e8;margin-bottom:12px}
.managed-crumbs{display:flex;align-items:center;gap:3px;flex:1;min-width:0;flex-wrap:nowrap;overflow-x:auto}.managed-crumbs>span{color:#999}.managed-crumbs button{padding:8px;background:transparent;white-space:nowrap}.managed-crumbs button:hover{background:#eee}.managed-crumbs .managed-path{flex:initial;font-size:14px}
.managed-search{width:210px;max-width:100%;height:44px;border:0;border-radius:12px;background:#eee;padding:0 14px;font:inherit;font-size:14px}.managed-view-switch{display:flex;gap:2px;padding:3px;background:#eee;border-radius:12px}.managed-view-switch button{width:38px;min-height:38px;padding:0;font-size:23px;background:transparent;border-radius:9px}.managed-view-switch button[aria-pressed=true]{background:white;box-shadow:0 1px 3px #0001}
.managed-entry-grid{display:grid;grid-template-columns:repeat(auto-fill,minmax(150px,1fr));gap:10px;align-content:start}.managed-entry-grid .managed-file{position:relative;display:block;padding:0;margin:0;border:0;background:transparent;border-radius:14px;min-width:0}.managed-entry-grid .managed-file:hover{background:#f0f0f0}.managed-entry-grid .managed-open{display:flex;flex-direction:column;gap:12px;align-items:center;justify-content:center;width:100%;min-height:140px;padding:12px 16px 16px;text-align:center;border-radius:14px}.managed-entry-grid .managed-entry-icon{width:76px;height:66px;display:grid;place-items:center}.managed-entry-grid .managed-entry-icon svg{width:76px;height:66px;color:#29292d}.managed-entry-grid [data-kind=folder] .managed-entry-icon svg{fill:none}.managed-entry-grid .managed-entry-label{text-align:center;font-size:14px;overflow-wrap:anywhere;max-width:100%}.managed-entry-grid .managed-entry-type{display:none}.managed-entry-grid .managed-file>button:last-child{position:absolute;top:2px;right:2px;min-width:36px;min-height:36px;padding:0;border-radius:10px;background:transparent;color:#888}.managed-entry-grid .managed-file>button:last-child:hover{background:#e4e4e4}.managed-entry-grid .managed-empty{grid-column:1/-1}
.managed-entry-grid[data-view=list]{display:block}.managed-entry-grid[data-view=list] .managed-file{border-bottom:1px solid #e9e9e9;border-radius:0}.managed-entry-grid[data-view=list] .managed-open{display:grid;grid-template-columns:30px minmax(0,1fr) 100px;min-height:62px;padding:10px 54px 10px 12px;text-align:left;gap:12px}.managed-entry-grid[data-view=list] .managed-entry-icon,.managed-entry-grid[data-view=list] .managed-entry-icon svg{width:25px;height:28px}.managed-entry-grid[data-view=list] .managed-entry-type{display:block;color:#888;font-size:12px}.managed-entry-grid[data-view=list] .managed-file>button:last-child{top:12px}
@container (max-width:600px){.managed-entry-grid{grid-template-columns:repeat(auto-fill,minmax(125px,1fr));gap:6px}.managed-entry-grid .managed-open{min-height:132px;padding:12px 12px 14px}.managed-entry-grid[data-view=list] .managed-open{grid-template-columns:26px minmax(0,1fr)}.managed-entry-grid[data-view=list] .managed-entry-type{display:none}}
@media(max-width:650px){.managed-toolbar .managed-path{order:0;flex:initial}.managed-search{flex:1;min-width:140px}.managed-crumbs{flex-basis:calc(100% - 60px)}.managed-toolbar{gap:6px}}

.managed-library{container-type:inline-size}
.managed-entry-grid[data-view=list] .managed-entry-label{text-align:left}
@container (max-width:650px){
.managed-library>.managed-toolbar{display:grid;grid-template-columns:44px minmax(0,1fr) 44px 44px 96px;gap:6px}
.managed-toolbar>.managed-nav-button{grid-column:1;grid-row:1}
.managed-toolbar>.managed-crumbs{grid-column:2/-1;grid-row:1;min-width:0}
.managed-toolbar>.managed-search{grid-column:1/3;grid-row:2;width:100%;min-width:0}
.managed-toolbar>.managed-create{grid-column:3;grid-row:2;font-size:0;padding:0!important;min-width:44px}.managed-create:after{content:none}
.managed-toolbar>.managed-trash{grid-column:4;grid-row:2;font-size:0;padding:0!important;min-width:44px}.managed-trash-icon{display:grid!important;place-items:center}.managed-trash-icon svg{width:24px;height:24px}
.managed-toolbar>.managed-view-switch{grid-column:5;grid-row:2}
}

.managed-trash-icon{display:none}

/* Unified UI geometry: control artwork is independent from the 44px hit target. */
body.design-web{font-family:-apple-system,BlinkMacSystemFont,"PingFang SC","Microsoft YaHei UI","Microsoft YaHei",sans-serif}
.design-web .xingti-icon{display:block;width:22px;height:22px;flex-shrink:0;fill:none;stroke:currentColor;stroke-linecap:round;stroke-linejoin:round}
.design-web .managed-library>.managed-toolbar .managed-crumbs button{background:transparent;border:0;border-radius:6px;padding:0 6px;min-width:0;min-height:44px;font-size:14px;flex-shrink:0;color:#6e6e73}
.design-web .managed-library>.managed-toolbar .managed-crumbs button:last-child{color:#1d1d1f;font-weight:500}
.design-web .managed-library>.managed-toolbar .managed-nav-button{background:transparent;border-radius:8px}
.design-web .managed-library>.managed-toolbar :is(.managed-create,.managed-trash){display:grid;place-items:center;width:44px;height:44px;min-width:44px;padding:0;background:transparent;font-size:0;border-radius:8px}
.design-web .managed-library>.managed-toolbar .managed-trash-icon{display:grid;place-items:center}
.design-web .managed-library>.managed-toolbar .managed-view-switch{padding:3px;gap:0;height:44px;box-sizing:border-box}
.design-web .managed-library>.managed-toolbar .managed-view-switch button{display:grid;place-items:center;width:44px;height:38px;min-height:38px;padding:0;min-width:0}
.design-web .managed-entry-grid .managed-open{background:transparent}
.design-web .managed-entry-grid .managed-file>button:last-child{display:grid;place-items:center;min-width:44px;min-height:44px;color:#6e6e73}
.design-web .managed-entry-grid .managed-entry-label{font-size:15px;font-weight:500;color:#1d1d1f}
.design-web .managed-entry-grid[data-view=list] .managed-file>button:last-child{top:8px}
.design-web .managed-entry-grid[data-view=list] .managed-entry-label{font-weight:400}