:root{--bg:#eef3f8;--ink:#172033;--muted:#667085;--line:#d7dee8;--blue:#2563eb;--green:#0f9d58;--word:#185abd;--access:#a4373a;--ppt:#d24726;--paper:#fff;--shadow:0 18px 55px rgba(34,50,79,.16)}*{box-sizing:border-box}html,body{margin:0;min-height:100%;font-family:Inter,ui-sans-serif,system-ui,-apple-system,BlinkMacSystemFont,"Segoe UI",sans-serif;color:var(--ink);background:var(--bg)}button,input,select{font:inherit}.hidden{display:none!important}.sitebar{height:66px;background:#0f172a;color:#fff;display:flex;align-items:center;justify-content:space-between;padding:0 22px;position:sticky;top:0;z-index:50}.brand-side,.brand{display:flex;align-items:center;gap:12px}.back{color:#fff;text-decoration:none;font-size:28px}.brand{text-decoration:none;color:#fff}.brand-orb{width:38px;height:38px;border-radius:12px;display:grid;place-items:center;background:#fff;color:#0f172a;font-weight:800}.brand strong,.brand small{display:block}.brand small{font-size:11px;opacity:.7}.paper-label{font-weight:700}.site-btn{border:1px solid rgba(255,255,255,.28);background:transparent;color:#fff;border-radius:10px;padding:9px 14px}.shell{max-width:1600px;margin:0 auto;padding:28px}.launch-window{background:#fff;border:1px solid var(--line);border-radius:24px;box-shadow:var(--shadow);display:grid;grid-template-columns:1.35fr .8fr;overflow:hidden}.launch-copy{padding:52px;background:linear-gradient(135deg,#f8fbff 0%,#edf5ff 65%,#eefdf7 100%)}.eyebrow{font-size:12px;letter-spacing:.14em;font-weight:800;color:#2563eb}.launch-copy h1,.results h1{font-size:44px;line-height:1.05;margin:12px 0 18px}.launch-copy p{font-size:18px;line-height:1.6;color:#475467}.feature-row{display:flex;flex-wrap:wrap;gap:9px;margin:25px 0}.feature-row span,.chapter-scope{border:1px solid #dbe5f3;background:#fff;border-radius:12px;padding:10px 13px;font-weight:650;font-size:13px}.chapter-scope{display:flex;flex-direction:column;gap:4px}.chapter-scope span{font-weight:500;color:#667085}.warning-box{margin-top:18px;padding:14px;border-radius:12px;background:#fff7e6;border:1px solid #f4d89a;color:#744b00;font-size:13px;line-height:1.5}.launch-panel{padding:38px;display:flex;flex-direction:column;gap:17px}.launch-panel label{display:flex;flex-direction:column;gap:7px;font-size:13px;font-weight:700;color:#344054}.launch-panel input,.launch-panel select{border:1px solid #cfd8e6;border-radius:10px;padding:11px 12px;background:#fff}.candidate-grid{display:grid;grid-template-columns:1fr 1fr;gap:12px}.mode-grid{display:grid;grid-template-columns:1fr 1fr;gap:10px}.mode-card{padding:14px;border:1px solid #d5deeb;background:#fff;border-radius:14px;text-align:left}.mode-card strong,.mode-card span{display:block}.mode-card span{font-size:12px;color:#667085;margin-top:5px}.mode-card.selected{border-color:#2563eb;background:#eff6ff;box-shadow:0 0 0 2px rgba(37,99,235,.1)}.primary,.secondary,.submit-btn{border:0;border-radius:10px;padding:10px 14px;font-weight:750;cursor:pointer}.primary{background:#2563eb;color:#fff}.secondary{background:#eef2f6;color:#344054;border:1px solid #d6dee9}.wide{width:100%;padding:13px}.microcopy{font-size:12px!important;color:#98a2b3!important;margin:0}.exam-strip{height:70px;background:#fff;border:1px solid var(--line);border-radius:16px;display:grid;grid-template-columns:1fr 1fr 2.3fr 1fr 1.2fr auto;align-items:center;padding:0 15px;box-shadow:0 8px 25px rgba(34,50,79,.07);margin-bottom:16px}.exam-strip>div{padding:0 13px;border-right:1px solid #edf0f4}.exam-strip span{display:block;font-size:10px;text-transform:uppercase;letter-spacing:.08em;color:#98a2b3}.exam-strip strong{font-size:14px}.progress{height:8px;background:#edf2f7;border-radius:99px;margin-top:8px;overflow:hidden}.progress>div{height:100%;background:#2563eb;width:0}.submit-btn{background:#b42318;color:#fff;margin-left:12px}.exam-layout{display:grid;grid-template-columns:365px minmax(0,1fr);gap:15px;min-height:760px}.paper-pane{background:#fff;border:1px solid var(--line);border-radius:16px;overflow:hidden;display:flex;flex-direction:column;min-height:760px}.paper-head{padding:16px 18px;background:#f7f9fc;border-bottom:1px solid var(--line);display:flex;align-items:center;gap:12px}.paper-icon{width:42px;height:42px;border-radius:10px;background:#1d4ed8;color:white;display:grid;place-items:center;font-weight:900}.paper-head strong,.paper-head small{display:block}.paper-head small{color:#667085;margin-top:3px}.candidate-card{padding:10px 17px;background:#fffbeb;border-bottom:1px solid #f1e1aa;font-size:12px;color:#785900}.question-paper{padding:15px 18px;overflow:auto;flex:1}.paper-section{border:1px solid #dbe2ec;border-radius:12px;margin-bottom:12px;overflow:hidden}.paper-section.active{border-color:#2563eb;box-shadow:0 0 0 2px rgba(37,99,235,.08)}.paper-section-head{padding:11px 12px;background:#f8fafc;display:flex;justify-content:space-between;align-items:center;cursor:pointer}.paper-section-head strong{font-size:14px}.section-mark{font-size:11px;background:#e9eff9;padding:4px 7px;border-radius:99px}.paper-tasks{padding:10px 13px}.paper-task{display:grid;grid-template-columns:24px 1fr 28px;gap:6px;padding:7px 0;border-bottom:1px dashed #e3e8ef;font-size:12px;line-height:1.45}.paper-task:last-child{border-bottom:0}.task-num{font-weight:800;color:#2563eb}.task-done{color:#0b8a50;font-weight:900}.paper-actions{padding:12px;border-top:1px solid var(--line);display:flex;gap:8px}.paper-actions button{flex:1;font-size:12px}.feedback{margin:0 12px 12px;padding:10px;border-radius:9px;font-size:12px}.feedback.good{background:#ecfdf3;color:#067647}.feedback.bad{background:#fef3f2;color:#b42318}.desktop-area{min-width:0}.desktop-wallpaper{height:760px;border-radius:16px;overflow:hidden;position:relative;background:linear-gradient(135deg,#063a73 0%,#0b5ca8 45%,#0a88a2 100%);box-shadow:var(--shadow)}.desktop-wallpaper:before{content:"";position:absolute;inset:0;background:radial-gradient(circle at 65% 35%,rgba(255,255,255,.19),transparent 30%),radial-gradient(circle at 30% 75%,rgba(255,255,255,.1),transparent 22%)}.desktop-icons{position:absolute;left:18px;top:18px;display:flex;flex-direction:column;gap:12px;z-index:2}.desktop-icon{width:88px;border:0;background:transparent;color:#fff;text-shadow:0 1px 3px #000;text-align:center;padding:8px}.desktop-icon span{font-size:34px;display:block}.desktop-icon b{font-size:11px}.app-window{position:absolute;left:118px;right:18px;top:18px;bottom:58px;background:#fff;border-radius:9px;overflow:hidden;box-shadow:0 18px 45px rgba(0,0,0,.28);z-index:3}.taskbar{position:absolute;bottom:0;left:0;right:0;height:44px;background:rgba(18,24,33,.92);display:flex;align-items:center;justify-content:center;gap:6px;z-index:5}.taskbar button{width:45px;height:38px;border:0;border-radius:6px;background:transparent;color:#fff;font-weight:900;font-size:20px}.taskbar button:hover,.taskbar button.active{background:rgba(255,255,255,.16)}.word-btn span{background:var(--word)}.access-btn span{background:var(--access)}.ppt-btn span{background:var(--ppt)}.word-btn span,.access-btn span,.ppt-btn span{display:inline-grid;place-items:center;width:28px;height:28px;border-radius:4px}.win-titlebar{height:35px;background:#f3f4f6;display:flex;align-items:center;justify-content:space-between;padding:0 10px;border-bottom:1px solid #d9dee7;font-size:12px}.win-titlebar.word{background:#185abd;color:#fff}.win-titlebar.access{background:#a4373a;color:#fff}.win-titlebar.ppt{background:#d24726;color:#fff}.win-controls{letter-spacing:12px}.ribbon-tabs{display:flex;height:32px;align-items:flex-end;padding-left:8px;border-bottom:1px solid #d6dbe3;background:#fff}.ribbon-tabs button{border:0;background:transparent;padding:8px 12px 6px;font-size:12px}.ribbon-tabs button.active{color:#1456b8;border-bottom:2px solid #1456b8}.ribbon{height:78px;background:#fafafa;border-bottom:1px solid #d8dde5;display:flex;align-items:stretch;padding:7px 8px;gap:5px;overflow-x:auto}.rib-group{border-right:1px solid #d7dce5;padding:2px 9px;display:flex;gap:5px;align-items:center;min-width:max-content}.rib-group:last-child{border-right:0}.rib-btn{min-width:58px;border:1px solid transparent;background:transparent;border-radius:5px;padding:4px;font-size:10px;color:#344054}.rib-btn:hover{background:#eef3f9;border-color:#d6e0ed}.rib-btn b{display:block;font-size:19px;margin-bottom:2px}.workspace{height:calc(100% - 145px);background:#e6e9ee;display:flex;overflow:hidden}.file-nav{width:185px;background:#fff;border-right:1px solid #d5dbe4;padding:10px;font-size:12px}.file-main{flex:1;background:#fff;padding:15px;overflow:auto}.file-row{display:grid;grid-template-columns:30px 1.5fr 1fr 90px;gap:8px;padding:9px;border-bottom:1px solid #eef1f5;align-items:center;font-size:12px;cursor:pointer}.file-row:hover{background:#f3f7fc}.file-row.selected{background:#e9f2ff}.file-big-icon{font-size:22px}.file-preview{width:260px;background:#fafbfc;border-left:1px solid #dbe1e8;padding:14px;font-size:12px;overflow:auto}.doc-zone{flex:1;display:flex;justify-content:center;overflow:auto;padding:25px}.doc-page{width:620px;min-height:760px;background:white;box-shadow:0 3px 13px rgba(0,0,0,.2);padding:55px 60px;position:relative}.doc-header,.doc-footer{position:absolute;left:60px;right:60px;color:#667085;font-size:10px}.doc-header{top:22px}.doc-footer{bottom:22px}.doc-content{font-family:"Times New Roman",serif;font-size:12px;line-height:1.45}.doc-content h1{font-size:24px;margin:0 0 15px}.doc-content .columns{column-count:2;column-gap:28px}.doc-content img,.mock-image{display:block;width:150px;height:95px;background:linear-gradient(135deg,#d9e8f7,#85b6dc);border:1px solid #8aa7bd;margin:10px auto;position:relative}.mock-image:after{content:"SOURCE IMAGE";position:absolute;inset:0;display:grid;place-items:center;font-size:10px;color:#365a76;font-family:Arial}.doc-table{border-collapse:collapse;width:100%;margin:12px 0}.doc-table td,.doc-table th{border:1px solid #777;padding:5px}.chart-box{height:150px;border:1px solid #c6cdd7;margin:12px 0;background:linear-gradient(to top,#eef4fb 0 1px,transparent 1px);display:flex;align-items:flex-end;gap:20px;padding:20px 35px}.chart-bar{width:45px;background:#7aaee7}.side-pane{width:220px;background:#fff;border-left:1px solid #d6dce5;padding:12px;overflow:auto}.side-pane h4{margin:4px 0 10px}.state-line{font-size:11px;padding:7px;border:1px solid #e2e7ee;border-radius:7px;margin-bottom:7px;background:#fafbfd}.access-workspace{height:calc(100% - 145px);display:flex;background:#fff}.access-nav{width:190px;background:#f5f2f2;border-right:1px solid #d8d3d3;padding:10px;overflow:auto}.access-nav button{width:100%;text-align:left;border:0;background:transparent;padding:7px;font-size:11px}.access-main{flex:1;overflow:auto;padding:14px;background:#fff}.datasheet{border-collapse:collapse;width:100%;font-size:11px}.datasheet th,.datasheet td{border:1px solid #d1d6dc;padding:6px}.datasheet th{background:#eee}.design-grid{display:grid;grid-template-columns:1fr 1fr 1fr;gap:1px;background:#cfd4da;border:1px solid #cfd4da;font-size:11px}.design-grid>div{background:#fff;padding:7px}.ppt-workspace{height:calc(100% - 145px);display:grid;grid-template-columns:150px 1fr 230px;background:#e7e9ed}.slide-thumbs{background:#f6f6f7;border-right:1px solid #d3d6dc;padding:10px;overflow:auto}.thumb{background:#fff;border:1px solid #bbb;width:118px;height:68px;margin:0 auto 10px;padding:7px;font-size:8px}.thumb.active{outline:2px solid #d24726}.slide-zone{display:flex;align-items:center;justify-content:center;overflow:auto;padding:22px}.slide-canvas{width:650px;height:365px;background:#fff;box-shadow:0 3px 16px rgba(0,0,0,.2);padding:35px;position:relative}.slide-title{font-size:30px;font-weight:700;text-align:center;margin-bottom:18px}.slide-body{font-size:19px}.slide-footer{position:absolute;left:20px;right:20px;bottom:10px;font-size:10px;display:flex;justify-content:space-between}.ppt-pane{background:#fff;border-left:1px solid #d2d6dd;padding:12px;overflow:auto}.notes-box{position:absolute;left:150px;right:230px;bottom:0;height:72px;background:#fff;border-top:1px solid #ccd1d8;padding:9px 15px;font-size:11px}.evidence-workspace{height:calc(100% - 35px);background:#dfe3e8;padding:18px;overflow:auto}.evidence-page{background:#fff;width:690px;min-height:720px;margin:0 auto;padding:45px;box-shadow:0 3px 15px rgba(0,0,0,.2)}.evidence-item{border:1px solid #cfd6e0;padding:12px;margin:12px 0}.capture-thumb{height:130px;background:#eef2f6;display:grid;place-items:center;color:#667085;border:1px dashed #b8c1cd}.modal{position:fixed;inset:0;background:rgba(15,23,42,.45);z-index:200;display:grid;place-items:center;padding:20px}.dialog{width:min(640px,96vw);max-height:90vh;background:#fff;border-radius:12px;overflow:hidden;box-shadow:0 28px 80px rgba(0,0,0,.35)}.dialog-titlebar{height:42px;background:#f3f4f6;border-bottom:1px solid #d7dde6;display:flex;align-items:center;justify-content:space-between;padding:0 13px;font-weight:700}.dialog-titlebar button{border:0;background:transparent;font-size:22px}.dialog-body{padding:18px;max-height:68vh;overflow:auto}.dialog-actions{padding:12px 18px;border-top:1px solid #dde2e9;display:flex;justify-content:flex-end;gap:8px}.form-grid{display:grid;grid-template-columns:1fr 1fr;gap:12px}.dialog label{font-size:12px;font-weight:700;color:#344054;display:flex;flex-direction:column;gap:5px}.dialog input,.dialog select,.dialog textarea{border:1px solid #cfd6e0;border-radius:7px;padding:8px}.dialog textarea{min-height:90px}.checklist{display:flex;flex-direction:column;gap:8px}.checkline{display:flex;align-items:center;gap:8px;font-size:12px}.results{background:#fff;border:1px solid var(--line);border-radius:22px;padding:38px;box-shadow:var(--shadow)}.result-top{display:flex;gap:28px;align-items:center}.score-ring{width:120px;height:120px;border-radius:50%;border:12px solid #dbeafe;display:grid;place-items:center;font-size:24px;font-weight:900;color:#1d4ed8}.big-score{font-size:38px;font-weight:900}.result-grid{display:grid;grid-template-columns:1fr 1fr;gap:16px;margin-top:28px}.result-card{border:1px solid #dfe4ec;border-radius:14px;padding:16px}.result-card h3{margin-top:0}.section-row,.detail-row{display:grid;grid-template-columns:1fr 90px;align-items:center;gap:10px;padding:8px 0;border-bottom:1px solid #edf0f4;font-size:13px}.section-track{height:7px;background:#edf2f7;border-radius:20px;overflow:hidden}.section-track div{height:100%;background:#2563eb}.detail-row.ok strong{color:#067647}.detail-row.miss strong{color:#b42318}.result-buttons{display:flex;gap:10px;margin-top:22px}.link{text-decoration:none;display:inline-block}.footer{text-align:center;padding:25px;color:#667085;font-size:12px}@media(max-width:1100px){.launch-window{grid-template-columns:1fr}.exam-layout{grid-template-columns:1fr}.paper-pane{min-height:auto;max-height:620px}.desktop-wallpaper{height:700px}.exam-strip{grid-template-columns:1fr 1fr 2fr 1fr;gap:5px;height:auto;padding:10px}.exam-strip>div:nth-child(5){grid-column:1/3}.submit-btn{grid-column:3/5}.app-window{left:12px;right:12px}.desktop-icons{display:none}}@media(max-width:650px){.shell{padding:12px}.sitebar{padding:0 10px}.paper-label{display:none}.launch-copy,.launch-panel{padding:24px}.launch-copy h1,.results h1{font-size:34px}.candidate-grid,.mode-grid,.result-grid{grid-template-columns:1fr}.exam-strip{grid-template-columns:1fr 1fr}.progress-cell{grid-column:1/3}.submit-btn{grid-column:1/3;margin:0}.paper-pane{max-height:520px}.desktop-wallpaper{height:650px}.app-window{top:10px;bottom:50px}.file-preview,.file-nav,.side-pane,.ppt-pane{display:none}.ppt-workspace{grid-template-columns:110px 1fr}.notes-box{left:110px;right:0}.slide-canvas{width:520px;height:293px}.doc-page{width:540px}.result-top{align-items:flex-start}.score-ring{width:90px;height:90px;border-width:9px}.big-score{font-size:30px}}

/* Paper 3 additions */
:root{--excel:#217346;--notepad:#edf4fb;--browser:#f5f7fa}
.section-switch{display:grid;grid-template-columns:1fr 1fr;border-bottom:1px solid var(--line);background:#f8fafc}.section-switch button{border:0;background:transparent;padding:10px 8px;font-weight:800;font-size:12px;color:#667085}.section-switch button.active{background:#fff;color:#1d4ed8;border-bottom:2px solid #1d4ed8}.excel-btn span{background:var(--excel);display:inline-grid;place-items:center;width:28px;height:28px;border-radius:4px}.web-btn span{background:#222b45;display:inline-grid;place-items:center;width:32px;height:28px;border-radius:4px;font-size:11px}.win-titlebar.excel{background:var(--excel);color:#fff}.win-titlebar.web{background:#202a3a;color:#fff}.excel-shell{height:100%;display:flex;flex-direction:column;background:#fff}.excel-tabs{display:flex;height:31px;align-items:flex-end;border-bottom:1px solid #d8dde5;background:#fff;padding-left:8px}.excel-tabs button{border:0;background:transparent;padding:8px 11px 6px;font-size:11px}.excel-tabs button.active{color:#176b42;border-bottom:2px solid #176b42}.excel-ribbon{height:72px;background:#fbfbfb;border-bottom:1px solid #d7dde5;display:flex;gap:4px;padding:7px;overflow-x:auto}.excel-ribbon .rib-group{padding:2px 7px}.excel-ribbon .rib-btn b{color:#176b42}.formula-strip{height:36px;display:grid;grid-template-columns:72px 36px 1fr;border-bottom:1px solid #d8dde5;background:#fff}.name-box,.fx-box{display:flex;align-items:center;justify-content:center;border-right:1px solid #d8dde5;font-size:11px}.fx-box{font-style:italic}.formula-input{border:0;padding:0 10px;outline:none;font-family:Consolas,monospace;font-size:12px}.sheet-wrap{flex:1;overflow:auto;background:#fff}.sheet-grid{border-collapse:collapse;table-layout:fixed;font-size:11px;min-width:900px}.sheet-grid th,.sheet-grid td{border:1px solid #d6d9dd;height:27px;padding:3px 5px;min-width:90px;white-space:nowrap;overflow:hidden;text-overflow:ellipsis}.sheet-grid thead th,.sheet-grid .row-head{background:#f2f3f5;text-align:center;color:#4a5568;font-weight:600}.sheet-grid .row-head{min-width:38px;width:38px;position:sticky;left:0;z-index:2}.sheet-grid thead th{position:sticky;top:0;z-index:3}.sheet-grid td.active-cell{outline:2px solid #217346;outline-offset:-2px}.sheet-grid td.selected{background:#e2f0d9}.sheet-grid td.formula-cell{color:#1a5e8a}.sheet-grid td.bold{font-weight:700}.sheet-grid td.italic{font-style:italic}.sheet-grid td.center{text-align:center}.sheet-grid td.right{text-align:right}.sheet-grid td.wrap{white-space:normal}.sheet-grid td.all-borders{border:2px solid #444}.sheet-grid td.cf-high{background:#c6efce;color:#006100}.sheet-grid td.cf-low{background:#ffc7ce;color:#9c0006}.sheet-grid td.fill-blue{background:#1f4e78;color:#fff}.sheet-grid td.fill-yellow{background:#ffe699}.sheet-grid td.text-white{color:#fff}.sheet-tabs{height:31px;background:#f3f4f6;border-top:1px solid #d8dde5;display:flex;align-items:center;gap:4px;padding-left:8px}.sheet-tab{border:1px solid #cfd5dc;border-bottom:0;background:#e9ecef;padding:6px 12px;font-size:10px}.sheet-tab.active{background:#fff;color:#176b42;font-weight:800}.excel-status{height:25px;border-top:1px solid #d9dde2;background:#f7f7f7;display:flex;align-items:center;justify-content:space-between;padding:0 10px;font-size:10px;color:#667085}.filter-badge{background:#e7f6ed;color:#176b42;border-radius:99px;padding:3px 7px;margin-left:4px}.web-workspace{height:100%;display:grid;grid-template-columns:1fr 1fr;grid-template-rows:1fr 1fr;background:#d8dde4;gap:1px}.web-pane{background:#fff;min-width:0;min-height:0;display:flex;flex-direction:column}.pane-title{height:34px;background:#f4f6f8;border-bottom:1px solid #d8dde5;display:flex;align-items:center;justify-content:space-between;padding:0 9px;font-size:11px;font-weight:750}.pane-title .pane-actions{display:flex;gap:4px}.pane-title button{border:1px solid #d0d6de;background:#fff;border-radius:5px;padding:4px 7px;font-size:9px}.notepad-menu{height:24px;background:#fff;border-bottom:1px solid #e0e4e8;padding:4px 8px;font-size:10px;color:#344054}.code-editor{flex:1;border:0;resize:none;outline:none;padding:10px;font-family:Consolas,"Courier New",monospace;font-size:11px;line-height:1.45;white-space:pre;overflow:auto;background:#fff}.browser-toolbar{height:35px;border-bottom:1px solid #d9dee5;display:grid;grid-template-columns:28px 28px 1fr 30px;align-items:center;gap:4px;padding:4px;background:#f5f7fa}.browser-toolbar button{border:0;background:transparent;font-size:14px}.address-bar{border:1px solid #ccd3dc;border-radius:7px;background:#fff;padding:5px 9px;font-size:9px;white-space:nowrap;overflow:hidden;text-overflow:ellipsis}.browser-frame{flex:1;border:0;background:#fff}.mini-files{flex:1;overflow:auto;padding:7px;background:#fff}.mini-file{display:grid;grid-template-columns:24px 1fr 70px;align-items:center;padding:6px;border-bottom:1px solid #eef1f4;font-size:10px;cursor:pointer}.mini-file:hover,.mini-file.selected{background:#eaf2fb}.web-status{height:23px;border-top:1px solid #d9dde3;padding:4px 8px;font-size:9px;color:#667085}.graphics-shell{height:100%;display:grid;grid-template-columns:210px 1fr;background:#2b2d30;color:#fff}.graphics-tools{padding:14px;background:#373a3f}.graphics-tools h3{font-size:13px;margin:0 0 13px}.graphics-tools label{display:flex;flex-direction:column;gap:5px;font-size:10px;margin-bottom:10px}.graphics-tools input,.graphics-tools select{padding:7px;border-radius:5px;border:1px solid #60646a;background:#222;color:#fff}.graphics-canvas{display:grid;place-items:center;background:#1f2124}.graphic-image{width:320px;height:210px;background:linear-gradient(135deg,#9ed4e5,#3d7f9f);box-shadow:0 4px 18px rgba(0,0,0,.35);display:grid;place-items:center;color:#143241;font-weight:800}.toast{position:fixed;right:20px;bottom:20px;background:#101828;color:#fff;padding:10px 14px;border-radius:9px;z-index:300;font-size:12px;box-shadow:0 12px 30px rgba(0,0,0,.3)}.question-paper .subhead{font-size:11px;font-weight:900;color:#475467;text-transform:uppercase;letter-spacing:.06em;margin:10px 0 4px}.app-empty{height:100%;display:grid;place-items:center;background:#eef2f7;color:#667085;text-align:center;padding:30px}.evidence-page h2{margin-top:0}.evidence-shot{font-family:Consolas,monospace;font-size:10px;white-space:pre-wrap;background:#f7f8fa;border:1px solid #d9dee6;padding:9px;margin-top:7px;max-height:180px;overflow:auto}.mini-note{padding:7px 9px;border-radius:7px;background:#f3f6fa;color:#475467;font-size:10px;margin:7px 0}.score-chip{display:inline-block;background:#ecfdf3;color:#067647;padding:3px 7px;border-radius:99px;font-size:10px;font-weight:800}.dialog .wide-input{width:100%}.dialog .small-help{font-size:10px;color:#667085;margin-top:6px}.chart-preview{height:190px;border:1px solid #d6dbe2;background:#fff;padding:20px;display:flex;align-items:flex-end;justify-content:center;gap:15px}.chart-preview .bar{width:42px;background:#5b9bd5;position:relative}.chart-preview .bar span{position:absolute;bottom:-18px;left:50%;transform:translateX(-50%);font-size:9px}.print-preview{background:#dce1e7;padding:18px}.print-page{background:#fff;width:420px;min-height:560px;margin:auto;padding:30px;box-shadow:0 2px 12px rgba(0,0,0,.18);font-size:11px}.web-workspace .web-pane:nth-child(3),.web-workspace .web-pane:nth-child(4){border-top:1px solid #cfd5dd}
@media(max-width:900px){.web-workspace{grid-template-columns:1fr;grid-template-rows:330px 330px 330px 330px;overflow:auto}.graphics-shell{grid-template-columns:1fr}.graphics-tools{display:grid;grid-template-columns:1fr 1fr;gap:8px}.graphics-canvas{min-height:330px}}
@media(max-width:650px){.sheet-grid{min-width:820px}.web-workspace{font-size:10px}.code-editor{font-size:10px}.graphics-tools{grid-template-columns:1fr}.file-preview{display:none}}


/* Reliability & application-fidelity v2.2 */
.office-title-left{display:flex;align-items:center;gap:10px;min-width:0}.office-qat{display:flex;gap:2px}.office-qat button{border:0;background:transparent;color:inherit;width:25px;height:26px;border-radius:4px;cursor:pointer}.office-qat button:hover{background:rgba(255,255,255,.18)}
.notepad-menu{padding:0 4px;display:flex;align-items:center}.notepad-menu button{border:0;background:transparent;padding:4px 7px;font-size:10px;color:#344054}.notepad-menu button:hover{background:#e9edf2}.notepad-menu button:disabled{opacity:.45}.p3-context-menu{position:fixed;z-index:500;min-width:155px;background:#fff;border:1px solid #bfc6cf;box-shadow:0 8px 22px rgba(0,0,0,.18);padding:4px}.p3-context-menu.hidden{display:none}.p3-context-menu button{display:block;width:100%;border:0;background:#fff;text-align:left;padding:7px 14px;font-size:11px}.p3-context-menu button:hover{background:#e8f1fb}.browser-toolbar{grid-template-columns:28px 28px 28px 1fr 30px}.browser-toolbar button:disabled{opacity:.35;cursor:not-allowed}

/* Reliability v3: every Paper 3 application is also available from the desktop. */
.desktop-icon.excel-desktop span,.desktop-icon.note-desktop span,.desktop-icon.browser-desktop span{width:36px;height:36px;margin:0 auto 4px;border-radius:6px;display:grid;place-items:center;color:#fff;text-shadow:none;font-weight:900;font-size:20px}
.desktop-icon.excel-desktop span{background:#217346}.desktop-icon.note-desktop span{background:#f5f5f5;color:#1f2937;border:1px solid #cfd6df}.desktop-icon.browser-desktop span{background:#0b84d8;border-radius:50%}.desktop-icon.graphics-desktop span{font-size:30px}
.paper3-desktop-icons{display:grid;grid-template-columns:88px 88px;grid-auto-rows:min-content;gap:5px 4px;align-content:start}.paper3-desktop-icons .desktop-icon{width:88px;padding:5px 4px}.paper3-desktop-icons .desktop-icon b{line-height:1.15}
.app-window{left:206px}
@media(min-width:1101px) and (min-height:720px){.paper-pane,.desktop-area{position:sticky;top:78px;align-self:start}.paper-pane{height:calc(100vh - 94px);min-height:620px}.desktop-wallpaper{height:calc(100vh - 94px);min-height:620px;max-height:790px}}
@media(max-width:1100px){.app-window{left:12px}.paper3-desktop-icons{display:none}}


/* Error 6 / v11: Excel print orientation must visibly match Portrait or Landscape at every viewport. */
.print-preview{overflow:auto;display:grid;place-items:center;min-height:300px}
.print-page{box-sizing:border-box;min-height:0;height:auto;transition:width .18s ease,aspect-ratio .18s ease;padding:clamp(16px,4vw,30px);overflow:hidden}
.print-page.portrait{width:min(420px,82vw);aspect-ratio:210/297}
.print-page.landscape{width:min(594px,82vw);aspect-ratio:297/210}
.preview-sheet-title{display:flex;justify-content:space-between;gap:12px;align-items:center;border-bottom:1px solid #cfd5dd;padding-bottom:8px;margin-bottom:10px;font-size:10px}
.preview-sheet-title span{font-weight:700;color:#475467}
.preview-sheet-grid{border:1px solid #aeb7c2;overflow:hidden;background:#fff}
.preview-row{display:grid;grid-template-columns:repeat(6,minmax(0,1fr))}
.preview-cell{min-width:0;border-right:1px solid #d6dbe2;border-bottom:1px solid #d6dbe2;padding:3px 4px;font-size:7px;white-space:nowrap;overflow:hidden;text-overflow:ellipsis;min-height:17px}
.preview-cell:nth-child(6n){border-right:0}.preview-cell.head{background:#eef1f4;font-weight:700}
.preview-footer{display:flex;justify-content:space-between;gap:10px;margin-top:8px;font-size:8px;color:#475467}
.preview-candidate{font-size:8px;color:#667085;margin-top:6px}
@media(max-width:650px){.print-preview{padding:10px;min-height:250px}.print-page.portrait{width:min(300px,78vw)}.print-page.landscape{width:min(340px,82vw)}.print-page{padding:14px}.preview-cell{font-size:6px;padding:2px}}

/* Error 9 / v14: Paper 3 applications remain available as real desktop shortcuts on laptop widths. */
@media (min-width:901px) and (max-width:1100px){
  .paper3-desktop-icons{display:grid!important;grid-template-columns:88px 88px;left:18px;top:18px;z-index:4}
  .app-window{left:206px!important;right:12px}
}
@media (min-width:651px) and (max-width:900px){
  .paper3-desktop-icons{display:grid!important;grid-template-columns:88px;left:18px;top:18px;z-index:4}
  .app-window{left:118px!important;right:12px}
}
@media (max-width:650px){
  .paper3-desktop-icons{display:none!important}
  .app-window{left:12px!important;right:12px}
}
@media (min-width:651px) and (max-width:900px){
  .paper3-desktop-icons{grid-auto-rows:70px;gap:2px}
  .paper3-desktop-icons .desktop-icon{height:70px;padding:2px 4px}
  .paper3-desktop-icons .desktop-icon span{width:30px;height:30px;font-size:17px;margin-bottom:2px}
  .paper3-desktop-icons .graphics-desktop span{font-size:25px}
  .paper3-desktop-icons .desktop-icon b{font-size:10px;line-height:1.05}
}


/* Error 11 — Paper 3 Excel ribbon/dialog fidelity */
.excel-ribbon .rib-group{display:flex;flex-direction:column;justify-content:space-between;min-width:max-content;border-right:1px solid #e1e5ea;padding:2px 8px 0}
.excel-ribbon .rib-group:last-child{border-right:0}
.excel-ribbon .rib-items{display:flex;gap:4px;align-items:flex-start;min-height:42px}
.excel-ribbon .rib-btn{min-width:62px;max-width:102px;border:0;background:transparent;border-radius:4px;padding:3px 5px;font-size:9px;line-height:1.05;display:flex;flex-direction:column;align-items:center;justify-content:flex-start;gap:2px;cursor:pointer;color:#344054}
.excel-ribbon .rib-btn:hover{background:#edf4ef}
.excel-ribbon .rib-btn b{font-size:15px;line-height:16px}
.excel-ribbon .rib-btn span{white-space:normal;text-align:center}
.excel-ribbon .rib-label{text-align:center;font-size:8px;color:#667085;border-top:1px solid #edf0f3;padding-top:2px;white-space:nowrap}
.formula-preview{margin-top:10px;padding:9px 10px;border:1px solid #d0d5dd;background:#f8fafc;border-radius:6px;font-family:Consolas,"Courier New",monospace;font-size:11px;word-break:break-all}
.dialog .checkline{display:flex;flex-direction:row;align-items:center;gap:7px;margin-top:4px}
@media(max-width:650px){.excel-ribbon{height:78px}.excel-ribbon .rib-btn{min-width:58px}.excel-ribbon .rib-group{padding-left:5px;padding-right:5px}}

/* Error 17: real File Explorer navigation */
.explorer-commandbar{height:40px;display:flex;align-items:center;gap:5px;padding:5px 8px;background:#f7f8fa;border-bottom:1px solid #d8dde5}.explorer-commandbar button{width:30px;height:28px;border:1px solid #d7dde6;background:#fff;border-radius:5px}.explorer-commandbar button:disabled{opacity:.35}.explorer-path{flex:1;min-width:0;border:1px solid #cfd6e0;background:#fff;border-radius:5px;padding:6px 9px;font-size:11px;white-space:nowrap;overflow:hidden;text-overflow:ellipsis}.explorer-nav-btn{display:block;width:100%;border:0;background:transparent;text-align:left;padding:7px 8px;border-radius:5px;font-size:11px;color:#344054}.explorer-nav-btn:hover,.explorer-nav-btn.selected{background:#e7f1fb;color:#1456b8}.file-headline{display:flex;justify-content:space-between;gap:10px;padding:0 4px 10px;font-size:12px;color:#475467}.explorer-empty{padding:25px 8px;color:#667085;font-size:12px}.workspace{height:calc(100% - 75px)}
@media(max-width:650px){.explorer-path{font-size:9px}}

.notepad-status{height:24px;display:flex;align-items:center;justify-content:space-between;padding:0 9px;border-top:1px solid #e5e7eb;background:#fafafa;color:#667085;font-size:10px}.notepad-status.hidden{display:none!important}

/* Error 22: print/evidence fidelity */
.p3-sheet-snapshot{width:min(760px,82vw);padding:22px}.p3-print-grid{border-collapse:collapse;width:100%;font-size:7px;table-layout:fixed}.p3-print-grid td,.p3-print-grid th{padding:3px;border:1px solid #bfc7d1;overflow:hidden;text-overflow:ellipsis;white-space:nowrap}.p3-print-grid td.right{text-align:right}.p3-print-grid td.center{text-align:center}.p3-print-grid td.bold{font-weight:800}.p3-print-grid td.cf-high{background:#c6efce;color:#006100}.p3-print-chart{margin:12px auto 0;border:1px solid #cdd4de;padding:9px;max-width:420px;background:#fff}.p3-print-chart>strong,.p3-print-chart>small{display:block;text-align:center}.p3-bars-mini{height:110px;display:flex;align-items:flex-end;justify-content:center;gap:18px;padding:12px 30px 20px;border-bottom:1px solid #999}.p3-bars-mini i{display:block;width:34px;background:#5b9bd5;position:relative}.p3-bars-mini span{position:absolute;left:50%;bottom:-16px;transform:translateX(-50%);font:8px Arial}.p3-pie-mini{display:grid;place-items:center;height:125px}.p3-pie-disc{width:95px;aspect-ratio:1;border-radius:50%;background:conic-gradient(#5b9bd5 0 32%,#ed7d31 32% 61%,#a5a5a5 61% 82%,#ffc000 82% 100%)}.p3-rich-capture{max-height:520px;overflow:auto;background:#dfe4ea;padding:10px}.p3-rich-capture .p3-sheet-snapshot{width:620px;max-width:none;transform:scale(.72);transform-origin:top left;margin-bottom:-25%}.p3-web-evidence{display:grid;gap:10px}.p3-web-evidence pre{max-height:150px;overflow:auto;background:#fff;border:1px solid #cfd6df;padding:8px;white-space:pre-wrap;font:8px/1.35 Consolas,monospace}.p3-web-page-preview iframe{display:block;width:100%;height:280px;border:1px solid #cfd6df;background:#fff;margin-top:5px}@media(max-width:650px){.p3-sheet-snapshot{min-width:520px}.p3-rich-capture .p3-sheet-snapshot{transform:scale(.55);margin-bottom:-45%}}

/* Error 24: phone layout keeps real Explorer navigation and Office/browser chrome. */
@media(max-width:650px){
  .desktop-wallpaper{overflow:hidden}
  .app-window{min-width:0;overflow:hidden}
  .win-titlebar{min-width:0}
  .ribbon-tabs,.excel-tabs{overflow-x:auto;white-space:nowrap}
  .ribbon,.excel-ribbon{overflow-x:auto}
  .workspace{min-width:0;overflow:auto}
  .file-nav{display:block!important;flex:0 0 108px;width:108px;padding:6px;overflow:auto}
  .file-main{min-width:250px;padding:9px}
  .file-preview{display:none!important}
  .sheet-wrap,.sheet-area,.web-workspace,.graphics-canvas,.browser-shell{min-width:0;overflow:auto}
  .taskbar{overflow-x:auto;justify-content:flex-start;padding:0 8px}
}