:root{color-scheme:light;--bg:#f1f3f5;--text:#303844;--accent:#456783;--surface:#fafaf9;--raised:#fdfdfc;--soft:#e9edf1;--selected:#e2eaf2;--border:#d6dce3;--muted:#5b6877;--danger:#a44141;--success:#41725d;--shadow:0 8px 32px #233c5310}*{box-sizing:border-box}body{margin:0;background:var(--bg);color:var(--text);font:14px/1.65 -apple-system,BlinkMacSystemFont,"Segoe UI","PingFang SC","Microsoft YaHei UI",sans-serif}body.dark{color-scheme:dark;--bg:#171b22;--text:#d9dfe7;--accent:#8bacc9;--surface:#202630;--raised:#242c36;--soft:#2a3440;--selected:#334453;--border:#394450;--muted:#a4b0bd;--danger:#e19595;--success:#90bfaa;--shadow:none}button,input,textarea,select{font:inherit}button,a,input,textarea,select,summary{outline-offset:4px}button{cursor:pointer;border:1px solid var(--border);background:var(--raised);color:var(--text);padding:9px 16px;border-radius:9px;transition:background .15s}button:hover{background:var(--selected)}button:disabled{opacity:.45;cursor:not-allowed}button.primary{background:var(--accent);color:var(--raised);border-color:var(--accent);font-weight:600}body.dark button.primary{color:#171b22}button.primary:hover{filter:brightness(1.08)}button.danger{color:var(--danger)}button.quiet{border-color:transparent;background:transparent;padding:6px 9px}a{color:var(--accent);text-decoration:none}a:hover{text-decoration:underline}h1,h2,h3,p{margin-top:0}h1{font-size:28px;letter-spacing:-.7px;font-weight:650;line-height:1.4;margin-bottom:10px}h2{font-size:16px;font-weight:650;margin-bottom:14px}h3{font-size:14px;margin-bottom:6px}.muted,.hint,.optional{color:var(--muted)}.hint{font-size:12px;line-height:1.7}.optional{font-weight:400;font-size:12px}.hidden{display:none!important}.wide{width:100%}.topbar{height:78px;background:var(--surface);border-bottom:1px solid var(--border);display:flex;align-items:center;justify-content:space-between;padding:0 34px;gap:20px}.brand{display:flex;gap:12px;align-items:center;font-size:30px;color:var(--text)}.brand:hover{text-decoration:none}.brand span{font-size:17px;font-weight:650;line-height:1.3}.brand small{display:block;font-size:9px;letter-spacing:2px;color:var(--muted);font-weight:500;margin-top:5px}nav{display:flex;gap:25px;align-items:center}nav a{color:var(--muted);font-size:13px}nav a.active{color:var(--accent);font-weight:650}.workspace{display:grid;grid-template-columns:272px minmax(0,1fr);min-height:calc(100vh - 78px)}.sidebar{background:var(--surface);border-right:1px solid var(--border);padding:28px 20px;display:flex;flex-direction:column}.side-heading{display:flex;justify-content:space-between;align-items:center;margin-bottom:18px}.side-heading h2{margin:0}.count{border-radius:5px;background:var(--soft);font-size:11px;font-weight:500;padding:2px 7px;color:var(--muted)}.side-caption{font-size:11px;color:var(--muted);margin:28px 8px 10px}.book-list{display:flex;flex-direction:column;gap:8px}.book-item{padding:14px;text-align:left;background:transparent;border-color:transparent}.book-item.selected{background:var(--selected);border-color:var(--border)}.book-item strong{display:block;font-weight:550;overflow-wrap:anywhere;margin-bottom:6px}.book-item small{display:block;color:var(--muted);font-size:11px}.side-note{margin-top:auto;padding:40px 8px 0;font-size:11px;color:var(--muted)}main{padding:44px 48px;min-width:0;max-width:1600px;width:100%;margin:0 auto}.page-heading{display:flex;justify-content:space-between;align-items:center;gap:20px;margin-bottom:27px}.page-heading p{margin-bottom:0;font-size:13px}.eyebrow{font-size:10px;letter-spacing:2px;font-weight:650;color:var(--accent);margin-bottom:12px}.pill{font-size:11px;border:1px solid var(--border);border-radius:20px;padding:5px 12px;white-space:nowrap;color:var(--muted)}.panel{background:var(--surface);border:1px solid var(--border);border-radius:14px;padding:25px;box-shadow:var(--shadow)}.create-grid{display:grid;grid-template-columns:minmax(320px,1.7fr) minmax(240px,1fr);gap:38px}.guide{padding:25px 0}.guide h2{font-size:20px;margin-bottom:30px}.step{display:flex;gap:17px;margin-bottom:22px}.step b{font-size:11px;color:var(--accent);border:1px solid var(--border);border-radius:50%;width:30px;height:30px;display:flex;align-items:center;justify-content:center;flex-shrink:0}.step h3{padding-top:4px;font-weight:550}.step p{font-size:12px;color:var(--muted);line-height:1.9}.context-note{padding-top:22px;border-top:1px solid var(--border);color:var(--muted);font-size:12px;line-height:1.9}label{display:block;font-size:13px;font-weight:550;margin-bottom:20px}input,textarea,select{display:block;width:100%;padding:11px 12px;margin-top:8px;color:var(--text);background:var(--raised);border:1px solid var(--border);border-radius:8px;font-size:13px;line-height:1.7}textarea{resize:vertical}input:focus,textarea:focus,select:focus{outline:2px solid var(--selected);border-color:var(--accent)}::placeholder{color:var(--muted);opacity:.7}#generate{width:100%;display:flex;justify-content:space-between;margin-top:20px}.auth{max-width:440px;margin:35px auto}.auth h1{font-size:24px}.auth .hint{margin:20px 0 0}.actions{display:flex;gap:8px;flex-wrap:wrap;justify-content:flex-end}.actions button{font-size:12px;padding:7px 12px}.status-strip{padding:12px 17px;margin-bottom:22px;border:1px solid var(--border);background:var(--selected);border-radius:9px;font-size:12px}.status-strip.error{background:var(--surface);color:var(--danger)}.reader-grid{display:grid;grid-template-columns:210px minmax(0,1fr);gap:20px}.chapter-panel{padding:20px 13px}.chapter-panel h2{padding:0 7px}.chapter-panel>.hint{margin-top:22px;padding:0 7px}.chapter{display:block;width:100%;margin:6px 0;border-color:transparent;background:transparent;text-align:left;padding:12px}.chapter.active{background:var(--selected);border-color:var(--border)}.chapter small{display:block;color:var(--muted);font-size:11px;margin-top:4px}.chapter small.approved{color:var(--success)}.reader-heading{display:flex;align-items:center;justify-content:space-between;gap:12px;margin-bottom:14px}.reader-heading h2{margin-bottom:2px}.editor{min-height:540px;line-height:2;font-size:15px;padding:20px;background:var(--raised);resize:vertical}.editor[readonly]{border-color:transparent;background:transparent;cursor:default}.empty{text-align:center;color:var(--muted);padding:130px 15px}.audit{margin-top:22px;font-size:12px}.audit summary{cursor:pointer;color:var(--muted);font-size:13px}.audit h3{margin-top:20px}pre{white-space:pre-wrap;word-break:break-word;font:inherit}.record{display:flex;justify-content:space-between;gap:14px;border-bottom:1px solid var(--border);padding:10px 0}.record small{color:var(--muted)}.record button{font-size:11px;padding:3px 10px;flex-shrink:0;align-self:center}#editor-footer{margin-top:10px}#toast{position:fixed;bottom:28px;left:50%;transform:translateX(-50%);background:var(--text);color:var(--surface);border-radius:10px;box-shadow:var(--shadow);padding:13px 22px;max-width:85vw;z-index:10}dialog{border:1px solid var(--border);border-radius:15px;color:var(--text);background:var(--surface);padding:27px;width:min(640px,90vw);max-height:85vh;box-shadow:0 20px 80px #0003}dialog::backdrop{background:#17222e66;backdrop-filter:blur(3px)}dialog .actions{margin-top:20px}dialog pre{max-height:50vh;overflow:auto;line-height:1.9}#review-hint{color:var(--accent)}@media(min-width:1500px){main{padding:50px 64px}.create-grid{gap:60px}.editor{min-height:620px}}@media(max-width:1100px){main{padding:28px 25px}.workspace{grid-template-columns:220px minmax(0,1fr)}.create-grid{grid-template-columns:1fr}.guide{display:none}.reader-grid{grid-template-columns:1fr}.chapter-panel #chapters{display:flex;gap:8px;overflow:auto}.chapter{min-width:110px}.topbar{padding:0 20px}nav{gap:13px}}@media(max-width:680px){.topbar{height:auto;min-height:74px;padding:14px;flex-wrap:wrap;gap:12px}.brand{font-size:24px}.brand span{font-size:15px}nav{gap:14px;font-size:12px}.workspace{display:block}.sidebar{border-right:0;border-bottom:1px solid var(--border);padding:16px}.side-heading,.side-caption,.side-note{display:none}.sidebar>.primary{width:auto}.book-list{flex-direction:row;overflow:auto;margin-top:10px}.book-item{min-width:160px;max-width:220px;padding:10px}.book-item strong{white-space:nowrap;overflow:hidden;text-overflow:ellipsis}main{padding:26px 16px}.page-heading{align-items:flex-start;flex-wrap:wrap}h1{font-size:24px}.panel{padding:18px}.reader-heading{flex-wrap:wrap}.editor{font-size:14px;padding:12px}.eyebrow{font-size:9px}.pill{display:none}}

#outline-review{margin-top:26px}#outline-review hr{border:0;border-top:1px solid var(--border);margin:26px 0}.check-label{display:flex;align-items:flex-start;gap:10px;font-weight:400}.check-label input{width:18px;height:18px;flex-shrink:0;margin:3px 0 0}#outline-unassigned{padding:12px;background:var(--soft);color:var(--danger)}#outline-issues{color:var(--accent);margin-bottom:18px}#current-outline{margin-top:12px;padding:10px;background:var(--soft);border-radius:8px;font-size:12px}#current-outline summary{cursor:pointer}

.workspace.signed-out{display:block}.workspace.signed-out main{max-width:900px;width:100%}

/* Fixed desktop shell: each pane owns its scroll position. */
@media(min-width:681px){
 html,body{height:100%;overflow:hidden}
 body{display:flex;flex-direction:column;height:100dvh}
 .topbar{flex-shrink:0}
 .workspace{flex:1;min-height:0;overflow:hidden}
 .sidebar{min-height:0;overflow-y:auto;overscroll-behavior:contain}
 .sidebar>*{flex-shrink:0}
 main{height:100%;min-height:0;overflow-y:auto;overscroll-behavior:contain;scrollbar-gutter:stable}
 .workspace.signed-out{min-height:0}
}
.models-workspace .model-list{display:flex;flex-direction:column;gap:8px;margin-top:20px}
.models-workspace .model-list button{text-align:left;overflow-wrap:anywhere}
.models-workspace .model-list small{display:block;color:var(--muted)}
.model-fields{display:grid;grid-template-columns:1fr 1fr;gap:0 22px}
.model-fields .full{grid-column:1/-1}.model-form{max-width:850px}
.model-list .selected{background:var(--selected)}
@media(max-width:680px){.model-fields{grid-template-columns:1fr}.models-workspace .model-list{max-height:180px;overflow-y:auto}}
/* Portal layouts: a bounded application shell, with independently scrolling panes. */
html,body{height:100%;overflow:hidden}body{display:grid;grid-template-rows:auto minmax(0,1fr);height:100dvh}
.workspace{height:100%;min-height:0;overflow:hidden;grid-template-rows:minmax(0,1fr)}
main{min-height:0;height:100%;overflow-y:auto;overscroll-behavior:contain}
.sidebar{height:100%;min-height:0;overflow-y:auto;overscroll-behavior:contain}
.topbar{height:68px}.brand span{font-size:16px}.sidebar{padding:24px 16px}.side-caption{margin-top:22px}
.creator-portal main{padding:32px}.creator-portal .create-grid{display:block;max-width:960px;margin:auto}
.creator-portal #create-panel>.page-heading{max-width:960px;margin-left:auto;margin-right:auto}
.creator-portal .panel{box-shadow:none}.creator-portal #create-form{padding:28px 32px}
.material-group{border:1px solid var(--border);border-radius:10px;padding:18px 20px;margin:22px 0;background:var(--raised)}
.material-group summary{font-weight:650;cursor:pointer}.material-group summary span{font-size:12px;font-weight:400;color:var(--muted);margin-left:12px}.material-group[open] summary{margin-bottom:18px}
.stats-grid{display:grid;grid-template-columns:repeat(4,minmax(0,1fr));gap:14px;margin-bottom:28px}
.stat-card{background:var(--surface);border:1px solid var(--border);border-radius:12px;padding:18px 22px;display:flex;flex-direction:column;gap:6px}.stat-card span{font-size:12px;color:var(--muted)}.stat-card strong{font-size:27px;font-weight:600;font-variant-numeric:tabular-nums}
.section-heading{display:flex;justify-content:space-between;align-items:center;margin:24px 0 14px;gap:12px}.section-heading h2{margin:0}
.project-cards{display:grid;grid-template-columns:repeat(auto-fill,minmax(290px,1fr));gap:18px}.project-card{text-align:left;padding:24px;background:var(--surface);border-radius:14px}.project-card h2{font-size:20px;margin:24px 0 12px}.project-card p{font-size:12px;color:var(--muted);margin-bottom:12px}.project-card-top,.project-card-bottom{display:flex;justify-content:space-between;align-items:center;gap:12px}.project-card-top .hint{max-width:50%;overflow-wrap:anywhere}.project-card-bottom{margin-top:18px;font-size:12px;color:var(--muted)}.project-card-bottom strong{color:var(--accent);font-weight:500}progress{width:100%;height:5px;accent-color:var(--accent)}.empty-project{grid-column:1/-1;padding:50px;text-align:center}
.project-tabs{gap:6px;border-bottom:1px solid var(--border);padding-bottom:10px;margin:24px 0}.project-tabs button{border:0;background:transparent;color:var(--muted)}.project-tabs button.active{background:var(--selected);color:var(--accent);font-weight:600}
.creator-portal .record{padding:15px 0}.creator-portal .record:last-child{border:0}.creator-portal [data-pane=materials] pre{line-height:1.9;max-width:900px}
.review-portal .workspace{grid-template-columns:220px minmax(0,1fr)}
.review-portal main{max-width:none;padding:24px;overflow:hidden}
.review-portal #detail-panel{height:100%;min-height:0;display:flex;flex-direction:column}
.review-heading{margin-bottom:14px;flex-shrink:0}.review-heading h1{font-size:23px;margin-bottom:3px}.review-heading .eyebrow{margin-bottom:5px}.review-heading p{font-size:12px}
.review-portal .status-strip{margin-bottom:16px;padding:9px 14px;flex-shrink:0;font-size:12px;background:var(--surface)}
.review-portal .reader-grid{flex:1;min-height:0;grid-template-columns:170px minmax(0,1fr);gap:16px}
.review-portal .chapter-panel{min-height:0;display:flex;flex-direction:column;padding:18px 10px;box-shadow:none}
.review-portal #chapters{display:block;min-height:0;overflow-y:auto;overscroll-behavior:contain}.review-portal .chapter{min-width:0;font-size:13px}
.review-portal .editor-panel{min-height:0;display:flex;flex-direction:column;padding:22px 26px;box-shadow:none}
.review-portal .reader-heading{flex-shrink:0;margin-bottom:10px}.reading-badge{color:var(--muted);font-size:11px;letter-spacing:1px}
.review-portal #review-hint{flex-shrink:0;padding:9px 12px;background:var(--soft);border-radius:7px;margin-bottom:12px;font-size:12px}
.review-portal #review-hint:empty{display:none}
.review-portal .editor{flex:1;min-height:0;height:100%;resize:none;overflow-y:auto;overscroll-behavior:contain;margin:0;font-size:16px;line-height:2.1;padding:18px 20px;border-color:var(--border)}
.review-footer{flex-shrink:0;border-top:1px solid var(--border);margin-top:16px;padding-top:14px;display:flex;justify-content:space-between;align-items:center;gap:12px;flex-wrap:wrap}.review-footer #editor-footer{margin:0}.review-footer .actions{margin-left:auto}.review-footer button{padding:9px 15px}
.review-portal .empty{flex:1;min-height:0;padding:50px 20px;overflow:auto}.book-menu{position:relative;flex-shrink:0}.book-menu summary{cursor:pointer;font-size:12px;color:var(--muted);padding:8px}.book-menu .actions{position:absolute;right:0;top:100%;width:180px;padding:12px;background:var(--surface);box-shadow:var(--shadow);border:1px solid var(--border);border-radius:10px;z-index:2;display:flex;flex-direction:column}
.review-portal .signed-out main{overflow:auto}.review-portal .signed-out{display:block}
@media(max-width:1000px){.review-portal .workspace{grid-template-columns:180px minmax(0,1fr)}.review-portal main{padding:16px}.review-portal .reader-grid{grid-template-columns:130px minmax(0,1fr);gap:12px}.review-portal .editor-panel{padding:16px}.review-footer{gap:7px}.creator-portal main{padding:24px}.stat-card{padding:15px}}
@media(max-width:680px){.topbar{height:auto;min-height:64px}.workspace,.review-portal .workspace{display:grid;grid-template-columns:minmax(0,1fr);grid-template-rows:auto minmax(0,1fr)}.sidebar{height:auto;max-height:145px;overflow:auto;padding:10px 14px}.book-list{margin-top:6px}.sidebar .side-heading{display:none}.creator-portal main{padding:20px 14px}.stats-grid{grid-template-columns:repeat(2,minmax(0,1fr));gap:10px}.creator-portal #create-form{padding:18px}.review-portal main{padding:12px}.review-heading h1{font-size:18px}.review-heading .eyebrow{display:none}.review-portal .status-strip{margin-bottom:8px}.review-portal .reader-grid{display:flex;flex-direction:column;gap:8px}.review-portal .chapter-panel{padding:6px;flex-shrink:0}.review-portal .chapter-panel h2{display:none}.review-portal #chapters{display:flex;overflow-x:auto;max-height:80px}.review-portal .chapter{min-width:110px;margin:0;padding:5px 10px}.review-portal .editor-panel{flex:1;padding:12px}.review-portal .editor{padding:12px;font-size:15px}.review-footer{margin-top:8px;padding-top:8px}.review-footer .actions{gap:5px}.review-footer button{padding:7px 10px}.review-portal .page-heading{margin-bottom:8px}.workspace.signed-out{display:block}.material-group{padding:14px}.material-group summary span{display:block;margin:4px 0 0}}

#reviewer-list{max-height:180px;overflow:auto}.account-add-heading{margin-top:24px}#reviewer-fields{border:0;padding:0;margin:0}

.project-filters{display:flex;align-items:center;gap:14px;flex-wrap:wrap;margin-bottom:18px}.project-filters label{margin:0;min-width:160px}.project-filters label:first-child{flex:1}.project-filters input,.project-filters select{margin-top:5px}.overview-alerts{display:grid;grid-template-columns:repeat(auto-fit,minmax(250px,1fr));gap:12px}.attention{text-align:left;padding:16px 20px;border-left:3px solid var(--accent);background:var(--surface)}.attention strong,.attention span{display:block}.attention span{font-size:12px;color:var(--muted);margin-top:5px}.attention.error{border-left-color:var(--danger)}.project-card .project-warning{padding:10px;border-radius:7px;background:var(--soft);color:var(--accent);overflow-wrap:anywhere}.project-card .project-warning.error{color:var(--danger)}
.reading-settings{position:relative;font-size:12px}.reading-settings summary{cursor:pointer;color:var(--accent);padding:8px}.reading-settings>div{position:absolute;right:0;top:100%;width:245px;z-index:3;border:1px solid var(--border);border-radius:10px;background:var(--surface);padding:16px;box-shadow:var(--shadow)}.reading-settings label{margin-bottom:12px}.reading-settings .check-label{font-size:12px;margin:0}.review-portal .editor[data-size=small]{font-size:14px}.review-portal .editor[data-size=normal]{font-size:16px}.review-portal .editor[data-size=large]{font-size:18px}.review-portal .editor[data-size=extra]{font-size:20px}.review-portal .editor[data-spacing=compact]{line-height:1.7}.review-portal .editor[data-spacing=normal]{line-height:2.1}.review-portal .editor[data-spacing=relaxed]{line-height:2.5}