/* Prayash IQ V30 — Professional Excel application layer
   Final design layer: Fluent-inspired spacing/type, Excel-first workspace shell,
   accessible responsive tables, and collision/overflow guards. */
:root{--excel:#107C41;--excel-dark:#185C37;--excel-light:#EAF5EE;--excel-teal:#008272;--excel-blue:#2563EB;--excel-violet:#6D42C7;--xl-ink:#242424;--xl-muted:#616161;--xl-subtle:#F5F7F6;--xl-line:#D9E1DC;--xl-line2:#E8ECE9;--xl-surface:#FFFFFF;--xl-radius:10px;--xl-shadow:0 8px 28px rgba(18,60,39,.07)}
.excel-shell-v30{--course-accent:var(--excel);background:#F5F7F6;color:var(--xl-ink);font-family:"Segoe UI",Inter,system-ui,-apple-system,BlinkMacSystemFont,sans-serif;font-size:14px;line-height:1.5;overflow-x:hidden}
.excel-shell-v30[data-course-theme="daily-use-cases"]{--course-accent:#008272}.excel-shell-v30[data-course-theme="advanced"]{--course-accent:#2563EB}.excel-shell-v30[data-course-theme="pro"]{--course-accent:#6D42C7}
.excel-shell-v30[data-excel-area="practice"]{--course-accent:#008272}.excel-shell-v30[data-excel-area="mastery"]{--course-accent:#2563EB}.excel-shell-v30[data-excel-area="certification"]{--course-accent:#0B3A6E}.excel-shell-v30[data-excel-area="automation"]{--course-accent:#6D42C7}
.excel-shell-v30 *{box-sizing:border-box}.excel-shell-v30 main,.excel-shell-v30 section,.excel-shell-v30 article,.excel-shell-v30 aside,.excel-shell-v30 div{min-width:0}.excel-shell-v30 img,.excel-shell-v30 svg,.excel-shell-v30 canvas,.excel-shell-v30 video{max-width:100%;height:auto}.excel-shell-v30 pre{max-width:100%;overflow:auto}.excel-shell-v30 code{overflow-wrap:anywhere}.excel-shell-v30 a:focus-visible,.excel-shell-v30 button:focus-visible,.excel-shell-v30 input:focus-visible,.excel-shell-v30 select:focus-visible,.excel-shell-v30 textarea:focus-visible,.excel-shell-v30 summary:focus-visible{outline:3px solid color-mix(in srgb,var(--course-accent) 28%,white);outline-offset:2px}
/* Global platform header stays above Excel workspace and mega menus open on hover/focus on desktop. */
.excel-shell-v30 .v24-header{z-index:600;background:rgba(255,255,255,.97);box-shadow:0 1px 0 rgba(0,0,0,.04)}
.excel-shell-v30 .mega-menu{z-index:650}.excel-shell-v30 .nav-menu-button,.excel-shell-v30 .nav-home{font-size:13px}
@media(min-width:901px){.excel-shell-v30 .v24-header .nav-group:hover>.mega-menu,.excel-shell-v30 .v24-header .nav-group:focus-within>.mega-menu{opacity:1;visibility:visible;pointer-events:auto;transform:translate(-50%,0)}.excel-shell-v30 .v24-header .nav-group:hover>.nav-menu-button .chev,.excel-shell-v30 .v24-header .nav-group:focus-within>.nav-menu-button .chev{transform:rotate(180deg)}}
/* Excel workspace shell */
.excel-context-v28{display:none!important}.excel-context-v30{position:sticky;top:72px;z-index:350;background:#fff;border-bottom:1px solid var(--xl-line);box-shadow:0 3px 12px rgba(24,92,55,.035)}.excel-context-v30-inner{width:min(1320px,calc(100% - 32px));min-height:56px;margin:auto;display:flex;align-items:center;gap:18px}.excel-product{display:flex;align-items:center;gap:9px;text-decoration:none;color:var(--excel-dark);flex:none}.excel-product-mark{width:31px;height:31px;border-radius:7px;background:var(--excel);color:#fff;display:grid;place-items:center;font-weight:800;font-size:15px;box-shadow:inset 0 -7px 12px rgba(0,0,0,.06)}.excel-product>span:last-child{display:grid}.excel-product b{font-size:14px;line-height:1.2}.excel-product small{font-size:11px;color:#6C756F;line-height:1.2}.excel-workspace-links{display:flex;align-items:center;gap:2px;min-width:0;overflow-x:auto;scrollbar-width:none}.excel-workspace-links::-webkit-scrollbar{display:none}.excel-workspace-links a{min-height:38px;padding:0 10px;display:flex;align-items:center;border-radius:7px;text-decoration:none;color:#4D5751;font-size:13px;font-weight:600;white-space:nowrap;border:1px solid transparent}.excel-workspace-links a:hover{background:#F0F6F2;color:var(--excel-dark)}.excel-workspace-links a.active,.excel-workspace-links a[aria-current="page"]{background:var(--excel-light);border-color:#CCE3D5;color:var(--excel-dark);font-weight:700}.excel-workspace-search{margin-left:auto;text-decoration:none;color:#4D5751;font-size:13px;font-weight:600;white-space:nowrap;display:flex;align-items:center;gap:5px;padding:8px 9px;border-radius:7px}.excel-workspace-search:hover{background:#F2F5F3;color:var(--excel-dark)}
/* Main content canvas and professional type ramp */
.excel-shell-v30 .academy-wrap,.excel-shell-v30 .container,.excel-shell-v30 .formula-wrap{width:min(1280px,calc(100% - 32px))!important;max-width:1280px!important;margin:0 auto!important;padding:28px 0 72px!important;background:transparent!important}.excel-shell-v30 main>section:first-child{margin-top:0}.excel-shell-v30 .eyebrow,.excel-shell-v30 .v25-kicker,.excel-shell-v30 .piq-kicker{font-size:11px!important;line-height:16px!important;letter-spacing:.08em!important;font-weight:700!important;color:var(--course-accent)!important;text-transform:uppercase}.excel-shell-v30 p,.excel-shell-v30 li,.excel-shell-v30 dd,.excel-shell-v30 td,.excel-shell-v30 label{font-size:14px;line-height:1.5}.excel-shell-v30 small,.excel-shell-v30 .muted,.excel-shell-v30 .reference-count{font-size:12px;line-height:16px}.excel-shell-v30 h1{color:var(--xl-ink);font-weight:650}.excel-shell-v30 h2{color:var(--xl-ink)!important;font-size:24px;line-height:32px;font-weight:650;letter-spacing:-.02em}.excel-shell-v30 h3{color:var(--xl-ink)!important;font-size:16px;line-height:22px;font-weight:650}.excel-shell-v30 h4{font-size:14px;line-height:20px}.excel-shell-v30 .lead-copy{font-size:17px!important;line-height:26px!important;color:#3F4943}.excel-shell-v30 .page-context-v25,.excel-shell-v30 .excel-page-intro-v28{width:100%;margin:0 0 22px;padding:0 0 18px;border-bottom:1px solid var(--xl-line)}.excel-shell-v30 .page-context-v25 h1,.excel-shell-v30 .excel-page-intro-v28 h1{font-size:clamp(30px,3.3vw,44px);line-height:1.08;letter-spacing:-.035em;margin:5px 0 5px}.excel-shell-v30 .page-context-v25 p,.excel-shell-v30 .excel-page-intro-v28 p{font-size:14px;max-width:820px;color:var(--xl-muted)}
/* Panels are surfaces, not decorative tiles. */
.excel-shell-v30 .content-box,.excel-shell-v30 .panel,.excel-shell-v30 .exam-setup-card,.excel-shell-v30 .exam-question-stage,.excel-shell-v30 .answer-card,.excel-shell-v30 .reference-intro{background:var(--xl-surface)!important;border:1px solid var(--xl-line)!important;border-radius:var(--xl-radius)!important;box-shadow:none!important;padding:22px!important;margin-bottom:16px}.excel-shell-v30 .content-box:hover{box-shadow:none!important}.excel-shell-v30 .section-title,.excel-shell-v30 .section-heading{margin:30px 0 12px;align-items:flex-end}.excel-shell-v30 .section-title h2,.excel-shell-v30 .section-heading h2{margin:3px 0 0}.excel-shell-v30 ul,.excel-shell-v30 ol{padding-left:22px}.excel-shell-v30 li+li{margin-top:5px}.excel-shell-v30 .tags{gap:6px}.excel-shell-v30 .tag{font-size:12px!important;line-height:16px;padding:5px 8px;border-radius:999px;background:#F0F4F1;border:1px solid #E0E7E2;color:#455149}
/* Buttons / fields */
.excel-shell-v30 .cta,.excel-shell-v30 .primary,.excel-shell-v30 .secondary,.excel-shell-v30 .secondary-btn,.excel-shell-v30 .secondary-link,.excel-shell-v30 .secondary-btn-link,.excel-shell-v30 .nav-button{min-height:40px;padding:9px 14px;border-radius:7px;font-size:13px!important;line-height:20px;font-weight:650;text-decoration:none;display:inline-flex;align-items:center;justify-content:center;gap:6px}.excel-shell-v30 .cta,.excel-shell-v30 button.primary{background:var(--course-accent)!important;color:#fff!important;border:1px solid var(--course-accent)!important}.excel-shell-v30 .secondary,.excel-shell-v30 .secondary-btn,.excel-shell-v30 .secondary-link,.excel-shell-v30 .secondary-btn-link{background:#fff!important;color:var(--course-accent)!important;border:1px solid #C8D4CC!important}.excel-shell-v30 input,.excel-shell-v30 select,.excel-shell-v30 textarea{width:100%;min-height:40px;border:1px solid #BFC9C2;border-radius:7px;background:#fff;color:var(--xl-ink);padding:8px 10px;font-size:14px}.excel-shell-v30 textarea{min-height:90px;resize:vertical}.excel-shell-v30 label{font-weight:600;color:#465149}.excel-shell-v30 kbd{display:inline-block;border:1px solid #C8CFCA;border-bottom-width:2px;border-radius:5px;background:#fff;padding:4px 7px;font:600 13px/1.2 "Segoe UI",sans-serif;color:#242424;white-space:nowrap}
/* Excel homepage */
.excel-shell-v30 .excel-v25-hero{padding:44px 0 36px;background:linear-gradient(180deg,#fff,#F5F8F6)}.excel-shell-v30 .v25-wrap{width:min(1280px,calc(100% - 32px))}.excel-shell-v30 .excel-v25-hero-grid{gap:44px}.excel-shell-v30 .excel-v25-copy h1{font-size:clamp(42px,5vw,62px);line-height:1.03}.excel-shell-v30 .excel-v25-copy>p{font-size:16px;line-height:25px}.excel-shell-v30 .excel-badges span{font-size:12px}.excel-shell-v30 .workbook-mock{border-radius:12px;box-shadow:var(--xl-shadow);border:1px solid #D3DED7;transform:none}.excel-shell-v30 .wb-title{font-size:12px}.excel-shell-v30 .wb-ribbon span,.excel-shell-v30 .wb-ribbon b,.excel-shell-v30 .wb-formula,.excel-shell-v30 .wb-table th,.excel-shell-v30 .wb-table td,.excel-shell-v30 .wb-tabs span,.excel-shell-v30 .wb-tabs b{font-size:10px}.excel-shell-v30 .excel-v25-stats{background:#185C37;color:#fff}.excel-shell-v30 .excel-stat,.excel-shell-v30 .excel-stat-intro{min-height:74px}.excel-shell-v30 .excel-stat span,.excel-shell-v30 .excel-stat-intro span{font-size:12px}.excel-shell-v30 .excel-stat b,.excel-shell-v30 .excel-stat-intro b{font-size:18px}.excel-shell-v30 .excel-v25-section{padding:58px 0}.excel-shell-v30 .excel-v25-section.alt{background:#F1F5F2}.excel-shell-v30 .excel-v25-head p{font-size:14px;line-height:21px}.excel-shell-v30 .excel-course-table-wrap,.excel-shell-v30 .excel-data-panel{border:1px solid var(--xl-line);border-radius:10px;overflow:hidden;background:#fff}.excel-shell-v30 .excel-course-table-head,.excel-shell-v30 .excel-course-row{font-size:13px}.excel-shell-v30 .excel-course-name small,.excel-shell-v30 .excel-course-name span,.excel-shell-v30 .excel-course-progress span{font-size:12px}.excel-shell-v30 .excel-library-v25 a{font-size:13px;padding:12px 14px;border-radius:7px}
/* Course */
.excel-shell-v30 .progression-summary{background:#fff;border:1px solid var(--xl-line);border-radius:9px;padding:16px 18px;margin-bottom:16px}.excel-shell-v30 .progression-summary h3{margin:0}.excel-shell-v30 .progression-summary p{margin:3px 0;color:var(--xl-muted);font-size:13px}.excel-shell-v30 .course-hero{position:relative;background:linear-gradient(135deg,color-mix(in srgb,var(--course-accent) 9%,white),#fff 55%);border:1px solid color-mix(in srgb,var(--course-accent) 20%,#D9E1DC);border-radius:12px;padding:28px 30px;overflow:hidden}.excel-shell-v30 .course-hero h2{font-size:32px;line-height:39px;margin:5px 0}.excel-shell-v30 .course-hero p{max-width:820px}.excel-shell-v30 .course-meta{gap:6px}.excel-shell-v30 .course-meta span{font-size:12px;padding:6px 8px;background:#fff;border:1px solid var(--xl-line);border-radius:5px}.excel-shell-v30 .course-hero-image{max-width:260px;max-height:180px;object-fit:contain;float:right;margin-left:24px}.excel-shell-v30 .course-detail-grid{display:grid;grid-template-columns:repeat(3,minmax(0,1fr));gap:0;border:1px solid var(--xl-line);border-radius:10px;overflow:hidden;background:#fff;margin:16px 0}.excel-shell-v30 .course-detail-grid>.content-box{border:0!important;border-radius:0!important;margin:0!important}.excel-shell-v30 .course-detail-grid>.content-box+.content-box{border-left:1px solid var(--xl-line)!important}.excel-shell-v30 .two-col{gap:12px}.excel-shell-v30 .curriculum-table{border:1px solid var(--xl-line);border-radius:10px;overflow:hidden;background:#fff}.excel-shell-v30 .curriculum-head{background:#F1F5F2;color:#4E5B53;font-size:12px;font-weight:650}.excel-shell-v30 .curriculum-row{border-top:1px solid var(--xl-line2);min-height:74px}.excel-shell-v30 .curriculum-title>a,.excel-shell-v30 .curriculum-title>b{font-size:14px}.excel-shell-v30 .curriculum-title>span,.excel-shell-v30 .curriculum-progress>span{font-size:12px}.excel-shell-v30 .curriculum-status{font-size:11px}.excel-shell-v30 .curriculum-action{font-size:13px}.excel-shell-v30 .curriculum-preview summary{font-size:12px}.excel-shell-v30 .data-list-table{border:1px solid var(--xl-line);border-radius:10px;overflow:hidden}.excel-shell-v30 .data-list-table .data-head{background:#F1F5F2;font-size:12px}.excel-shell-v30 .data-list-table .data-row{font-size:13px;line-height:20px}.excel-shell-v30 .data-list-table .data-row span span{font-size:12px;color:#6A756E}
/* Module */
.excel-shell-v30 .lesson-concept-figure{margin:12px 0 18px;background:#fff;border:1px solid var(--xl-line);border-radius:10px;padding:16px;text-align:center}.excel-shell-v30 .lesson-concept-figure img{max-height:360px;object-fit:contain}.excel-shell-v30 .lesson-concept-figure figcaption{font-size:12px;color:#6A746D;margin-top:8px}.excel-shell-v30 .module-lesson-grid{display:block!important;border:1px solid var(--xl-line);border-radius:10px;overflow:hidden}.excel-shell-v30 .module-lesson-row{display:grid;grid-template-columns:54px minmax(0,1fr) 120px;gap:14px;align-items:center;padding:14px 16px;border-bottom:1px solid var(--xl-line2);background:#fff}.excel-shell-v30 .module-lesson-row:last-child{border-bottom:0}.excel-shell-v30 .module-lesson-row:hover{background:#F9FBFA}.excel-shell-v30 .module-lesson-row b{font-size:14px}.excel-shell-v30 .module-lesson-row p{font-size:13px;line-height:19px;margin:3px 0 0}.excel-shell-v30 .lab-grid{gap:12px}.excel-shell-v30 .mastery-pack-stats>div{border-radius:7px}.excel-shell-v30 .global-standard-grid,.excel-shell-v30 .global-module-grid{border-radius:10px}
/* Lesson */
.excel-shell-v30 .app-action-panel{display:grid;grid-template-columns:auto 1fr auto;column-gap:16px;row-gap:8px;align-items:end;background:#F7FAF8!important}.excel-shell-v30 .app-action-panel>.eyebrow{grid-column:1/-1}.excel-shell-v30 .app-action-panel .app-actions{align-self:end}.excel-shell-v30 .app-action-panel label{grid-column:2;align-self:center}.excel-shell-v30 .app-action-panel textarea{grid-column:2;min-height:64px}.excel-shell-v30 .app-action-panel>#saveLessonNote,.excel-shell-v30 .app-action-panel>#saveFormulaNote{grid-column:3;grid-row:4}.excel-shell-v30 .lesson-layout{grid-template-columns:minmax(0,1fr) 300px;gap:18px}.excel-shell-v30 .lesson-main .content-box{padding:24px!important}.excel-shell-v30 .lesson-side .sticky-card{top:142px}.excel-shell-v30 .syntax-box{background:#F3F6F4;border:1px solid #D9E1DC;border-radius:8px;padding:14px}.excel-shell-v30 .syntax-box code{display:block;background:#fff;border:1px solid #DCE3DE;border-radius:6px;padding:10px 12px;margin:6px 0 12px;font:600 13px/20px ui-monospace,SFMono-Regular,Consolas,monospace}.excel-shell-v30 .lesson-data-table{width:100%;border-collapse:collapse;min-width:680px}.excel-shell-v30 .lesson-data-table th,.excel-shell-v30 .lesson-data-table td{font-size:13px!important;line-height:19px!important;padding:11px 12px!important;text-align:left;vertical-align:top}.excel-shell-v30 .lesson-data-table th{font-size:12px!important;background:#F1F5F2!important}.excel-shell-v30 .lesson-compare{border-radius:10px}.excel-shell-v30 .lesson-compare h3{font-size:15px}.excel-shell-v30 .review-strip span{font-size:13px!important;line-height:20px}.lesson-action-list-v30{display:grid;border:1px solid var(--xl-line);border-radius:10px;overflow:hidden}.lesson-action-list-v30>a{display:grid;grid-template-columns:36px 1fr auto;gap:12px;align-items:center;padding:13px 15px;background:#fff;text-decoration:none;color:var(--xl-ink)}.lesson-action-list-v30>a+a{border-top:1px solid var(--xl-line2)}.lesson-action-list-v30>a:hover{background:#F7FAF8}.lesson-action-list-v30>a>span{font-size:11px;color:#89938D;font-weight:700}.lesson-action-list-v30 b{display:block;font-size:14px}.lesson-action-list-v30 small{display:block;font-size:12px;color:#6C756F;margin-top:2px}.lesson-action-list-v30 em{font-style:normal;font-size:13px;font-weight:650;color:var(--course-accent)}
/* Formula guides */
.excel-shell-v30 .function-meta{display:grid;grid-template-columns:repeat(3,1fr);gap:0;padding:0!important;overflow:hidden}.excel-shell-v30 .function-meta>div{padding:16px 18px}.excel-shell-v30 .function-meta>div+div{border-left:1px solid var(--xl-line)}.excel-shell-v30 .function-meta b,.excel-shell-v30 .function-meta a{font-size:13px}.excel-shell-v30 .formula-top-grid{gap:14px}.excel-shell-v30 .web-visual{background:#fff;border:1px solid var(--xl-line);border-radius:10px;padding:16px}.excel-shell-v30 .web-visual img{max-height:420px;object-fit:contain}.excel-shell-v30 .web-visual figcaption{font-size:12px;color:#69736D}.excel-shell-v30 .formula-reference-grid{gap:8px}.excel-shell-v30 .formula-reference-card{grid-template-columns:76px 1fr;border-radius:8px;padding:10px;font-size:13px}.excel-shell-v30 .formula-reference-card img{width:76px}
/* Reference library */
.excel-shell-v30 .reference-tabs{display:flex;gap:4px;overflow-x:auto;white-space:nowrap;padding:6px;background:#EDF2EF;border:1px solid var(--xl-line);border-radius:9px;margin-bottom:14px}.excel-shell-v30 .reference-tabs a{font-size:13px;padding:8px 10px;border-radius:6px;text-decoration:none;color:#4E5852;font-weight:600}.excel-shell-v30 .reference-tabs a:hover,.excel-shell-v30 .reference-tabs a.active{background:#fff;color:var(--excel-dark)}.excel-shell-v30 .reference-toolbar{display:grid;grid-template-columns:minmax(260px,520px) auto;justify-content:space-between;gap:16px;align-items:end;background:#fff;border:1px solid var(--xl-line);border-radius:9px;padding:14px 16px;margin-bottom:14px}.excel-shell-v30 .reference-toolbar label{display:block;margin-bottom:5px}.excel-shell-v30 .reference-content{overflow:visible!important}.excel-table-scroll-v30{max-width:100%;overflow:auto;border:1px solid var(--xl-line);border-radius:9px;background:#fff}.reference-table-v30,.excel-directory-table-v30,.learning-progress-table-v30{width:100%;min-width:860px;border-collapse:collapse}.reference-table-v30 th,.reference-table-v30 td,.excel-directory-table-v30 th,.excel-directory-table-v30 td,.learning-progress-table-v30 th,.learning-progress-table-v30 td{padding:12px 13px;border-bottom:1px solid var(--xl-line2);text-align:left;vertical-align:top;font-size:13px}.reference-table-v30 th,.excel-directory-table-v30 th,.learning-progress-table-v30 th{position:sticky;top:0;z-index:2;background:#F1F5F2;color:#4E5A53;font-size:12px;font-weight:650;white-space:nowrap}.reference-table-v30 tr:last-child td,.excel-directory-table-v30 tr:last-child td,.learning-progress-table-v30 tr:last-child td{border-bottom:0}.reference-table-v30 tbody tr:hover,.excel-directory-table-v30 tbody tr:hover,.learning-progress-table-v30 tbody tr:hover{background:#FAFCFB}.reference-table-v30 td small,.excel-directory-table-v30 td span,.learning-progress-table-v30 td small{display:block;margin-top:3px;font-size:12px;color:#6E7872}.reference-table-v30 a,.excel-directory-table-v30 a,.learning-progress-table-v30 a{color:var(--course-accent);font-weight:650;text-decoration:none}.ref-pill-v30{display:inline-flex;padding:4px 7px;border-radius:999px;background:#EDF4EF;color:#3D5848;font-size:11px;font-weight:650;white-space:nowrap}.file-ext-v30{display:inline-block;min-width:58px;padding:5px 7px;background:#F0F4F1;border-radius:5px;color:var(--excel-dark);font-weight:700}.ref-detail-v30 summary{cursor:pointer;font-size:12px;font-weight:650;color:var(--course-accent)}.ref-detail-v30[open]{min-width:250px}.ref-detail-v30 ul{margin:8px 0}.excel-directory-v30{margin-top:14px}
/* Practice workbench */
.excel-shell-v30 .container .panel{padding:20px!important}.excel-shell-v30 .controls{grid-template-columns:minmax(220px,1fr) minmax(180px,.7fr) auto;gap:14px}.excel-shell-v30 .actions{display:flex;gap:8px;align-items:end}.excel-shell-v30 .status{font-size:13px}.excel-shell-v30 .stats{grid-template-columns:repeat(4,1fr);gap:0;border:1px solid var(--xl-line);border-radius:9px;overflow:hidden}.excel-shell-v30 .stats div{border:0;border-right:1px solid var(--xl-line);border-radius:0;background:#fff}.excel-shell-v30 .stats div:last-child{border-right:0}.excel-shell-v30 .stats strong{font-size:20px}.excel-shell-v30 .stats span{font-size:12px}.excel-shell-v30 .steps{grid-template-columns:repeat(4,1fr);gap:0;border:1px solid var(--xl-line);border-radius:9px;overflow:hidden}.excel-shell-v30 .steps article{border:0;border-radius:0;background:#fff;padding:16px}.excel-shell-v30 .steps article+article{border-left:1px solid var(--xl-line)}.excel-shell-v30 .steps h3{font-size:14px}.excel-shell-v30 .steps p{font-size:13px}
/* Exams */
.excel-shell-v30 .exam-setup-card{padding:24px!important}.excel-shell-v30 .exam-setup-heading h2{font-size:26px}.excel-shell-v30 .exam-setup-heading p{font-size:14px}.excel-shell-v30 .exam-controls{gap:12px}.excel-shell-v30 .cert-blueprint>div{border-radius:7px}.excel-shell-v30 .cert-blueprint b{font-size:22px}.excel-shell-v30 .cert-blueprint span{font-size:12px}.excel-shell-v30 .exam-layout{gap:16px}.excel-shell-v30 .exam-sidebar{top:142px}.excel-shell-v30 .exam-choice{font-size:14px;line-height:21px;border-radius:8px}.excel-shell-v30 .choice-letter{font-size:12px}.excel-shell-v30 .question-nav button{min-width:34px;min-height:34px;font-size:12px}.excel-shell-v30 .answer-card h3{font-size:17px}.excel-shell-v30 .explanation-box{font-size:14px;line-height:22px}
/* Mastery */
.excel-shell-v30 .mastery-hero{margin:0 0 20px}.excel-shell-v30 .mastery-hero h1{font-size:clamp(34px,4vw,52px)}.excel-shell-v30 .mastery-hero p{font-size:14px}.excel-shell-v30 .mastery-kpis>div{border-radius:8px;padding:14px}.excel-shell-v30 .mastery-kpis b{font-size:24px}.excel-shell-v30 .mastery-kpis span{font-size:12px}.excel-shell-v30 .mastery-filter{position:sticky;top:142px;z-index:80;box-shadow:0 7px 18px rgba(0,0,0,.04)!important}.mastery-list-v30{border:1px solid var(--xl-line);border-radius:10px;overflow:hidden;background:#fff}.mastery-row-v30{display:grid;grid-template-columns:44px 1fr;gap:12px;padding:17px 18px}.mastery-row-v30+.mastery-row-v30{border-top:1px solid var(--xl-line2)}.mastery-row-no-v30{font-size:11px;color:#89938D;font-weight:700}.mastery-row-v30 h3{margin-top:3px}.mastery-row-v30 details{margin-top:8px}.formula-decision-list-v30{display:grid;border:1px solid var(--xl-line);border-radius:10px;overflow:hidden;background:#fff;margin-top:12px}.formula-decision-list-v30 article{display:grid;grid-template-columns:minmax(0,1fr) 150px;gap:20px;align-items:start;padding:15px 17px}.formula-decision-list-v30 article+article{border-top:1px solid var(--xl-line2)}.formula-decision-list-v30 article small{font-size:11px;color:#6D7771}.formula-decision-list-v30 h3{margin:2px 0}.formula-decision-list-v30 p{font-size:13px}.formula-decision-list-v30 details summary{font-size:12px;color:var(--course-accent);font-weight:650;cursor:pointer}
/* Standards */
.excel-shell-v30.standards-v25 main{background:#F5F7F6}.excel-shell-v30 .standards-hero{width:min(1280px,calc(100% - 32px));border-radius:12px!important;padding:34px!important;margin:28px auto 0!important}.excel-shell-v30 .standards-hero h1{font-size:clamp(34px,4vw,50px)}.excel-shell-v30 .benchmark-card p,.excel-shell-v30 .benchmark-card li{font-size:13px!important}.excel-shell-v30 .standard-matrix th,.excel-shell-v30 .standard-matrix td{font-size:13px!important;padding:11px 12px}.excel-shell-v30 .standard-matrix th{font-size:12px!important}
/* Projects are one place where visual cards are appropriate. */
.excel-shell-v30 .project-grid{display:grid!important;grid-template-columns:repeat(3,minmax(0,1fr))!important;gap:14px}.excel-shell-v30 .project-card{background:#fff;border:1px solid var(--xl-line);border-radius:10px!important;padding:16px;box-shadow:none}.excel-shell-v30 .project-thumb{width:100%;aspect-ratio:16/8;object-fit:cover;border-radius:7px;background:#F1F5F2}.excel-shell-v30 .project-card h2{font-size:18px!important;line-height:24px}.excel-shell-v30 .project-card p{font-size:13px}
/* My learning */
.excel-shell-v30 .dashboard-hero{border-radius:12px}.excel-shell-v30 .dashboard-kpis,.excel-shell-v30 .course-progress-grid{gap:10px}.progress-cell-v30{display:grid;grid-template-columns:42px 1fr;gap:7px;align-items:center;min-width:150px}.progress-cell-v30>span{font-size:12px}.progress-cell-v30 i{height:6px;background:#E6ECE8;border-radius:99px;overflow:hidden}.progress-cell-v30 i b{display:block;height:100%;background:var(--course-accent);border-radius:99px}.learning-next-list-v30{display:grid;border:1px solid var(--xl-line);border-radius:10px;overflow:hidden}.learning-next-row-v30{display:grid;grid-template-columns:36px minmax(0,1fr) auto;gap:13px;align-items:center;background:#fff;padding:14px 16px;text-decoration:none;color:var(--xl-ink)}.learning-next-row-v30+.learning-next-row-v30{border-top:1px solid var(--xl-line2)}.learning-next-row-v30:hover{background:#F8FBF9}.learning-next-row-v30>span{font-size:11px;color:#89938D;font-weight:700}.learning-next-row-v30 small{display:block;color:#6B756F;font-size:11px}.learning-next-row-v30 b{display:block;font-size:14px;margin:1px 0}.learning-next-row-v30 p{font-size:13px;margin:2px 0;color:#657069}.learning-next-row-v30 em{font-style:normal;font-size:13px;font-weight:650;color:var(--course-accent)}
/* Footer */
.excel-shell-v30>footer{width:100%;margin-top:0;padding:22px max(20px,calc((100% - 1280px)/2));background:#fff;border-top:1px solid var(--xl-line);font-size:12px;color:#68736C}.excel-shell-v30>footer img{width:34px;vertical-align:middle;margin-right:8px}.excel-shell-v30>footer a{color:#536158}
/* Responsive reflow. Aim for no page-level horizontal scrolling down to 320 px. */
@media(max-width:1080px){.excel-shell-v30 .course-detail-grid{grid-template-columns:1fr}.excel-shell-v30 .course-detail-grid>.content-box+.content-box{border-left:0!important;border-top:1px solid var(--xl-line)!important}.excel-shell-v30 .project-grid{grid-template-columns:repeat(2,minmax(0,1fr))!important}.excel-shell-v30 .lesson-layout{grid-template-columns:1fr}.excel-shell-v30 .lesson-side{display:grid;grid-template-columns:repeat(2,minmax(0,1fr));gap:12px}.excel-shell-v30 .lesson-side .sticky-card{position:static}.excel-shell-v30 .mastery-filter{position:static}.excel-shell-v30 .exam-sidebar{position:static!important}}
@media(max-width:900px){.excel-context-v30{top:64px}.excel-context-v30-inner{width:calc(100% - 24px);gap:10px}.excel-product small{display:none}.excel-workspace-search span{display:none}.excel-shell-v30 .academy-wrap,.excel-shell-v30 .container,.excel-shell-v30 .formula-wrap,.excel-shell-v30 .v25-wrap,.excel-shell-v30 .standards-hero{width:calc(100% - 24px)!important}.excel-shell-v30 .two-col,.excel-shell-v30 .formula-top-grid{grid-template-columns:1fr!important}.excel-shell-v30 .function-meta{grid-template-columns:1fr}.excel-shell-v30 .function-meta>div+div{border-left:0;border-top:1px solid var(--xl-line)}.excel-shell-v30 .app-action-panel{grid-template-columns:1fr}.excel-shell-v30 .app-action-panel>*{grid-column:auto!important;grid-row:auto!important}.excel-shell-v30 .controls{grid-template-columns:1fr 1fr}.excel-shell-v30 .controls .actions{grid-column:1/-1}.excel-shell-v30 .steps{grid-template-columns:1fr 1fr}.excel-shell-v30 .steps article:nth-child(3){border-left:0;border-top:1px solid var(--xl-line)}.excel-shell-v30 .steps article:nth-child(4){border-top:1px solid var(--xl-line)}.formula-decision-list-v30 article{grid-template-columns:1fr}}
@media(max-width:680px){.excel-context-v30-inner{min-height:54px;display:grid;grid-template-columns:auto 1fr auto;gap:7px}.excel-product>span:last-child{display:none}.excel-product-mark{width:30px;height:30px}.excel-workspace-links{grid-column:1/-1;grid-row:2;margin:0 -2px 6px}.excel-context-v30{position:relative;top:auto}.excel-shell-v30 .academy-wrap,.excel-shell-v30 .container,.excel-shell-v30 .formula-wrap,.excel-shell-v30 .v25-wrap,.excel-shell-v30 .standards-hero{width:calc(100% - 20px)!important;padding-bottom:50px!important}.excel-shell-v30 .page-context-v25{display:block}.excel-shell-v30 .page-context-v25>a{display:inline-block;margin-top:7px}.excel-shell-v30 .page-context-v25 h1,.excel-shell-v30 .excel-page-intro-v28 h1{font-size:30px}.excel-shell-v30 .course-hero{padding:20px}.excel-shell-v30 .course-hero-image{display:none}.excel-shell-v30 .curriculum-head{display:none}.excel-shell-v30 .curriculum-row{grid-template-columns:38px minmax(0,1fr) auto!important;padding:13px}.excel-shell-v30 .curriculum-progress{grid-column:2/-1}.excel-shell-v30 .curriculum-status{display:none}.excel-shell-v30 .curriculum-preview{grid-column:2/-1}.excel-shell-v30 .module-lesson-row{grid-template-columns:40px minmax(0,1fr) auto}.excel-shell-v30 .module-lesson-row p{display:none}.excel-shell-v30 .lesson-side{grid-template-columns:1fr}.excel-shell-v30 .lesson-main .content-box{padding:18px!important}.excel-shell-v30 .lesson-data-table{min-width:620px}.excel-shell-v30 .reference-toolbar{grid-template-columns:1fr}.excel-shell-v30 .project-grid{grid-template-columns:1fr!important}.excel-shell-v30 .controls{grid-template-columns:1fr}.excel-shell-v30 .controls .actions{grid-column:auto;display:grid}.excel-shell-v30 .stats{grid-template-columns:1fr 1fr}.excel-shell-v30 .stats div:nth-child(2){border-right:0}.excel-shell-v30 .stats div:nth-child(-n+2){border-bottom:1px solid var(--xl-line)}.excel-shell-v30 .steps{grid-template-columns:1fr}.excel-shell-v30 .steps article+article,.excel-shell-v30 .steps article:nth-child(3),.excel-shell-v30 .steps article:nth-child(4){border-left:0;border-top:1px solid var(--xl-line)}.excel-shell-v30 .mastery-kpis{grid-template-columns:1fr 1fr}.excel-shell-v30 .mastery-filter{grid-template-columns:1fr}.mastery-row-v30{grid-template-columns:32px 1fr;padding:14px}.learning-next-row-v30{grid-template-columns:30px 1fr}.learning-next-row-v30 em{grid-column:2}.excel-shell-v30 .exam-controls{grid-template-columns:1fr!important}.excel-shell-v30 .cert-blueprint{grid-template-columns:1fr 1fr}.excel-shell-v30 .v25-actions{flex-direction:column}.excel-shell-v30 .v25-btn{width:100%}}
@media(max-width:360px){.excel-shell-v30 .academy-wrap,.excel-shell-v30 .container,.excel-shell-v30 .formula-wrap,.excel-shell-v30 .v25-wrap,.excel-shell-v30 .standards-hero{width:calc(100% - 16px)!important}.excel-workspace-links a{font-size:12px;padding-inline:8px}.excel-shell-v30 p,.excel-shell-v30 li,.excel-shell-v30 td{font-size:13px}.excel-shell-v30 .cert-blueprint,.excel-shell-v30 .mastery-kpis,.excel-shell-v30 .stats{grid-template-columns:1fr}.excel-shell-v30 .stats div{border-right:0;border-bottom:1px solid var(--xl-line)}.excel-shell-v30 .stats div:last-child{border-bottom:0}}
@media(prefers-reduced-motion:reduce){.excel-shell-v30 *{scroll-behavior:auto!important;transition:none!important;animation:none!important}}

/* Formula Library */
.formula-library-hero{display:grid;grid-template-columns:minmax(0,1.4fr) minmax(320px,.8fr);gap:28px;align-items:end;margin-bottom:16px;padding:28px 30px;border:1px solid #CFE2D6;border-radius:12px;background:linear-gradient(135deg,#EAF5EE 0%,#fff 62%)}
.formula-library-hero h1{font-size:clamp(32px,3.5vw,48px);line-height:1.06;letter-spacing:-.04em;margin:5px 0 9px}.formula-library-hero p{max-width:760px;margin:0;color:var(--xl-muted)}
.formula-library-stats{display:grid;grid-template-columns:repeat(3,minmax(0,1fr));border:1px solid var(--xl-line);border-radius:9px;background:#fff;overflow:hidden}.formula-library-stats span{padding:14px 12px;color:#5B665F;font-size:12px;line-height:17px}.formula-library-stats span+span{border-left:1px solid var(--xl-line)}.formula-library-stats b{display:block;margin-bottom:2px;color:var(--excel-dark);font-size:17px;line-height:22px}
.excel-shell-v30 .library-controls{display:grid;grid-template-columns:minmax(260px,1fr) minmax(220px,340px) auto;gap:14px;align-items:end;padding:16px 18px!important}.library-controls label{display:block;margin-bottom:6px;font-weight:650}.library-controls input,.library-controls select{width:100%;min-height:42px;padding:9px 11px;border:1px solid #B8C5BD;border-radius:7px;background:#fff;color:var(--xl-ink);font:inherit}.library-controls input:focus,.library-controls select:focus{outline:3px solid rgba(16,124,65,.16);border-color:var(--excel)}#libraryCount{min-width:118px;padding-bottom:10px;color:var(--xl-muted);font-size:12px;text-align:right;white-space:nowrap}
.excel-shell-v30 .library-grid{grid-template-columns:repeat(3,minmax(0,1fr))!important;gap:12px}.excel-shell-v30 .library-card{display:flex;flex-direction:column;min-width:0;padding:16px!important}.excel-shell-v30 .library-thumb{width:100%;aspect-ratio:16/8;object-fit:contain;border:1px solid var(--xl-line2);border-radius:7px;background:#F8FAF9;margin-bottom:13px}.excel-shell-v30 .library-card h2{font-size:18px;line-height:24px;margin:5px 0}.excel-shell-v30 .library-card p{margin:5px 0;color:#5C6760}.excel-shell-v30 .library-card code{display:block;margin:7px 0;padding:9px 10px;border:1px solid #DCE3DE;border-radius:6px;background:#F3F6F4;color:#21362A;font:600 12px/18px ui-monospace,SFMono-Regular,Consolas,monospace}.excel-shell-v30 .library-card a{margin-top:auto;padding-top:10px}.library-empty{grid-column:1/-1;padding:34px;border:1px dashed #B8C7BE;border-radius:10px;background:#F8FBF9;text-align:center}.library-empty h2{margin:0 0 5px}.library-empty p{margin:0;color:var(--xl-muted)}
@media(max-width:1000px){.formula-library-hero{grid-template-columns:1fr}.excel-shell-v30 .library-grid{grid-template-columns:repeat(2,minmax(0,1fr))!important}}
@media(max-width:680px){.formula-library-hero{padding:22px 18px}.formula-library-stats{grid-template-columns:1fr}.formula-library-stats span+span{border-left:0;border-top:1px solid var(--xl-line)}.excel-shell-v30 .library-controls{grid-template-columns:1fr}.excel-shell-v30 .library-grid{grid-template-columns:1fr!important}#libraryCount{text-align:left;padding-bottom:0}}