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.home-featured-banner{display:none;align-items:center;gap:10px;margin:0 0 18px;padding:8px 10px;border:1px solid rgba(244,201,74,.42);border-radius:9px;background:#f4c94a1a;color:var(--magic-ink);font-size:.78rem}.home-featured-banner-mark{color:var(--magic-gold-bright);font-size:1.25rem}.home-featured-banner div{min-width:0;display:grid;gap:2px}.home-featured-banner strong{color:var(--magic-gold-bright)}.home-featured-banner span:last-child{overflow:hidden;text-overflow:ellipsis;white-space:nowrap;color:var(--magic-muted)}.home-featured-banner-close{margin-left:auto;border:0;background:transparent;color:var(--magic-muted);font-size:1.2rem;cursor:pointer}.page-home-showcase .home-shelf-stack{gap:24px}.page-home-showcase .home-shelf-title{display:block;margin:0;padding:4px 10px;border:1px solid rgba(196,201,214,.55);border-radius:0 0 5px 5px;background:linear-gradient(180deg,#d8dbe2,#8e929e);color:#202331;font-family:Georgia,Times New Roman,serif;font-size:.94rem;line-height:1.1;text-shadow:0 1px 0 rgba(255,255,255,.45)}.page-home-showcase .bookshelf-container--horizontal .shelf{scrollbar-width:none}.page-home-showcase .bookshelf-container--horizontal .shelf::-webkit-scrollbar{display:none}.page-home-showcase .bookshelf-container--horizontal .books{gap:14px;padding:0 8px 1px;scroll-snap-type:x mandatory}.page-home-showcase .bookshelf-container--horizontal .shelf{padding-top:1px}.page-home-showcase .bookshelf-container--horizontal .course-book-card{scroll-snap-align:start}.page-home-showcase .course-book-card{width:clamp(104px,29vw,142px);min-height:226px;border:1px solid rgba(129,207,194,.25);border-radius:9px;box-shadow:0 8px 18px #00000059;transition:transform .18s ease,box-shadow .18s ease}.page-home-showcase .course-book-card:hover{transform:perspective(700px) rotateY(-4deg) translateY(-7px);box-shadow:0 14px 24px #00000070,0 0 12px #f4c94a33}@media (max-width: 560px){.page-home-showcase{padding-inline:9px}.page-home-showcase .home-hero:before{padding-top:9px}.page-home-showcase .home-hero-expanded-layout{margin-top:-29px;padding-inline:8px}.page-home-showcase .book-showcase{padding-inline:11px}.page-home-showcase .book3d-scene{min-height:150px}.home-featured-banner span:last-child{max-width:190px}}.book3d-plate--preview.is-text-only{--book3d-excerpt-lines: 16}.book3d-plate--preview.is-text-only .book3d-excerpt{font-size:.78rem}@media (max-width: 899px){.page-home-showcase .home-hero:not(.collapsed),.page-home-test .home-hero:not(.collapsed){padding:6px 8px 2px!important;margin-bottom:4px}.page-home-showcase .home-hero:not(.collapsed) .home-hero-title,.page-home-test .home-hero:not(.collapsed) .home-hero-title{font-size:1rem;line-height:1.2}.page-home-showcase .home-eyebrow,.page-home-test .home-eyebrow{font-size:.58rem}.book3d{padding:0}.book3d-scene{aspect-ratio:15 / 10;min-height:180px;max-height:240px;transform:rotateX(5deg)}.book3d-spread{grid-template-columns:minmax(0,1fr) 10px minmax(0,1fr);top:3%;right:3%;bottom:4%;left:3%}.book3d-page--left{transform:perspective(700px) rotateY(8deg)}.book3d-page--right{transform:perspective(700px) rotateY(-8deg)}.book3d-sheet{top:6%;right:7%;bottom:8%;left:7%}.book3d-preview-art{flex-basis:34%}.book3d-copy{--book3d-excerpt-lines: 8;padding:6px 7px 7px}.book3d-heading{font-size:.82rem;line-height:1.3}.book3d-excerpt{font-size:.68rem}.book3d-plate--preview.is-text-only{--book3d-excerpt-lines: 12}.book3d-plate--preview.is-text-only .book3d-excerpt{font-size:.66rem;line-height:1.35}}@media (min-width: 768px) and (max-width: 1024px) and (orientation: portrait){.app-shell:has(.page-home-showcase) .app-header-inner{width:100%}.page-home-showcase .home-hero:not(.collapsed) .home-hero-expanded-layout,.page-home-test .home-hero:not(.collapsed) .home-hero-expanded-layout{display:block;grid-template-columns:none;gap:0}.page-home-showcase .book-showcase,.page-home-test .book-showcase{max-width:none}.page-home-showcase .home-hero:not(.collapsed) .home-hero-title,.page-home-test .home-hero:not(.collapsed) .home-hero-title{font-size:1.15rem;line-height:1.25}.book3d-scene{max-height:220px;min-height:168px}.book3d-page--left .book3d-sheet{top:5%;right:6%;bottom:6%;left:6%}.book3d-page--left .book3d-plate--cover{display:flex;align-items:center;justify-content:center}.book3d-page--left .book3d-cover-img{position:absolute;top:0;right:0;bottom:0;left:0;width:100%;height:100%;object-fit:contain;object-position:center center}}@media (prefers-reduced-motion: reduce){.book3d-scene,.book3d-page--left,.book3d-page--right{transform:none}.book3d--loading .book3d-page{animation:none}}@media (max-width: 899px){.page-home-showcase .home-hero:not(.collapsed){padding:0 0 12px!important;margin-bottom:0}.page-home-showcase .home-hero:not(.collapsed) 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6px;border:none;border-radius:6px;background:transparent;color:var(--shelf-sage-dark);font-size:.95rem;font-weight:700;cursor:pointer;line-height:1}.app-stage-nav-button:hover:not(:disabled){background:#8b8b7a1f}.app-stage-nav-button:disabled{opacity:.35;cursor:not-allowed}.app-stage-nav-label{min-width:0;text-align:center;font-size:.8rem;font-weight:700;color:var(--shelf-ink-muted);white-space:nowrap;overflow:hidden;text-overflow:ellipsis}.app-shell:has(.page-home),.app-shell:has(.practice-page),.app-shell:has(.course-wizard-page){color:var(--shelf-ink)}.app-main:has(.page-home),.app-main:has(.practice-page),.app-main:has(.practice-code-page),.app-main:has(.course-wizard-page){display:block;min-height:auto;padding-top:0;padding-bottom:calc(20px + env(safe-area-inset-bottom,0px));overflow-x:clip}.page-home,.practice-page,.course-wizard-page{gap:var(--app-section-gap)}.page-home .home-hero{background:transparent;color:var(--shelf-ink);border:none;border-radius:0;box-shadow:none;margin-bottom:0;overflow:hidden}.page-home .home-hero.collapsed{padding:10px 14px}.page-home .home-eyebrow{color:var(--shelf-sage-dark);letter-spacing:.14em}.page-home .home-hero-title{color:var(--shelf-ink)}.page-home .home-hero-description,.page-home .home-hero-features{color:var(--shelf-ink-muted)}.page-home .home-hero-toggle{color:var(--shelf-sage-dark);background:none;border-radius:0;position:absolute!important;right:16px!important;top:16px!important;left:auto!important;z-index:100!important;min-width:24px;min-height:24px;pointer-events:auto!important}.page-home .hero-cta{background:var(--shelf-sage);color:#fff}.page-home .hero-cta:hover{background:var(--shelf-sage-dark)}.page-home .hero-secondary{background:#8b8b7a14;color:var(--shelf-ink);border-color:var(--shelf-border-strong)}.page-home .hero-secondary:hover{background:#8b8b7a29}.page-home .home-categories.panel{border:none;box-shadow:none;padding:0;border-radius:0;overflow:hidden;flex:1 1 auto;display:flex;flex-direction:column;min-height:0}.page-home .home-categories .container{width:100%;max-width:none;margin:0;padding:0;border-radius:0;background:transparent;border:none;box-shadow:none;flex:1 1 auto;display:flex;flex-direction:column;min-height:100%}.page-home .tabs{margin-bottom:12px;border-bottom-color:transparent}.page-home .tab{color:var(--shelf-ink-muted);padding:10px 18px;font-size:15px}.page-home .tab:hover{color:var(--shelf-ink)}.page-home .tab.active{background:var(--shelf-sage);color:#fff}.page-home .home-course-loading{color:var(--shelf-ink-muted)}.home-return-loader{position:fixed;top:50%;left:50%;z-index:40;display:flex;align-items:center;gap:8px;transform:translate(-50%,-50%);padding:12px 16px;border:1px solid rgba(255,255,255,.35);border-radius:12px;background:#0f0c29eb;color:#fff;font-weight:700;box-shadow:0 8px 28px #0f0c2947;pointer-events:none}.home-return-loader-emoji{display:inline-block;font-size:1.45rem;animation:home-return-book-bounce .9s ease-in-out infinite}.home-return-loader-dots{width:20px;overflow:hidden;animation:home-return-dots 1.1s steps(4,end) infinite}@keyframes home-return-book-bounce{0%,to{transform:translateY(0) rotate(-6deg)}50%{transform:translateY(-5px) rotate(6deg)}}@keyframes home-return-dots{0%{opacity:.25}50%{opacity:1}to{opacity:.25}}.page-home .bookshelf-container,.page-home .shelf,.page-home .shelf-track{width:100%}.page-home .home-shelf-stack{display:grid;gap:28px}.page-home .home-shelf-title{margin:0 0 12px;color:var(--shelf-ink, #0f172a);font-size:1.15rem;line-height:1.2}.page-home .bookshelf-container--horizontal{min-width:0}.page-home .bookshelf-container--horizontal .shelf{width:100%;overflow-x:auto;overflow-y:hidden;overscroll-behavior-x:contain;scroll-snap-type:x proximity;scrollbar-width:thin;touch-action:pan-x pan-y}.page-home-showcase .bookshelf-container--horizontal .shelf{overflow-x:auto!important;overflow-y:hidden!important}.page-home .bookshelf-container--horizontal .shelf-board{-webkit-user-select:none;user-select:none;pointer-events:none;cursor:default}.page-home .bookshelf-container--horizontal .shelf-track--horizontal{position:relative}.page-home .shelf-page-button{position:absolute;top:50%;z-index:3;width:30px;height:48px;padding:0;border:1px solid rgba(255,255,255,.35);border-radius:6px;background:#0f172ac7;color:#fff;cursor:pointer;font-size:30px;line-height:1;transform:translateY(-50%)}.page-home .shelf-page-button:hover:not(:disabled),.page-home .shelf-page-button:focus-visible:not(:disabled){background:#0f172af2;outline:2px solid rgba(255,226,122,.8);outline-offset:2px}.page-home .shelf-page-button:disabled{cursor:default;opacity:.28}.page-home .shelf-page-button--left{left:2px}.page-home .shelf-page-button--right{right:2px}.page-home .bookshelf-container--horizontal .books{display:flex;align-items:flex-end;justify-content:flex-start;width:max-content;min-width:100%;gap:clamp(10px,2.4vw,22px);padding:0 clamp(4px,1.5vw,12px)}.page-home .shelf-track--horizontal{width:max-content;min-width:100%}.page-home .shelf-track--horizontal .shelf-board{width:100%;min-width:100%}.page-home .books{display:grid;grid-template-columns:repeat(var(--shelf-cols, 2),minmax(0,1fr));align-items:end;justify-items:center;gap:clamp(16px,3vw,28px) clamp(10px,2.4vw,22px);padding:0 clamp(4px,1.5vw,12px);width:100%;box-sizing:border-box}@media (min-width: 600px){.page-home .books{gap:clamp(18px,3.2vw,36px) clamp(14px,2.8vw,28px);padding:0 clamp(6px,2vw,16px)}}.page-home .book{flex:0 0 auto;width:100%!important;max-width:280px!important;display:flex;flex-direction:column;align-items:stretch}.page-home .bookshelf-container .book,.page-home .bookshelf-container .book:hover,.page-home .bookshelf-container .book:active,.page-home .bookshelf-container .book:focus-visible{transition:none;transform:none}.page-home .book,.page-home .book *{-webkit-user-select:none;user-select:none}.page-home .bookshelf-container--horizontal .book{width:clamp(132px,18vw,190px)!important;min-width:clamp(132px,18vw,190px);margin-bottom:4px;scroll-snap-align:start}body[data-bookshelf-theme=space] .page-home .book--category,body[data-bookshelf-theme=space] .page-home .book--category:hover,body[data-bookshelf-theme=space] .page-home .book--category:active,body[data-bookshelf-theme=space] .page-home .author-shelf-button,body[data-bookshelf-theme=space] .page-home .author-shelf-button:hover,body[data-bookshelf-theme=space] .page-home .author-shelf-button:active{background:transparent!important;color:inherit!important;box-shadow:none!important;border:none!important;text-transform:none!important;letter-spacing:normal!important;text-shadow:none!important;padding:0!important;font-size:inherit!important;border-radius:0!important}.page-home .book-caption{display:flex;flex-direction:column;gap:4px;margin-bottom:10px;min-height:3.6em;text-align:center}.page-home .book:not(.book--category)>.book-caption{display:none}.page-home .book-cover-ribbon{position:absolute;left:10px;right:0;bottom:0;z-index:6;display:flex;align-items:center;justify-content:flex-start;min-height:2.75em;padding:7px 8px;box-sizing:border-box;background:#0000008c;-webkit-backdrop-filter:none;backdrop-filter:none;pointer-events:none}.page-home .book-cover-ribbon-title{width:100%;margin:0;color:#fff;font-size:clamp(.78rem,2.9vw,.98rem);font-weight:800;line-height:1.18;text-align:left;text-shadow:none;display:-webkit-box;-webkit-line-clamp:3;-webkit-box-orient:vertical;overflow:hidden;word-break:break-word}.page-home .book-caption-author{font-size:1.2rem;font-weight:700;line-height:1.25;color:#0f172ac7;white-space:nowrap;overflow:hidden;text-overflow:ellipsis}.page-home .book-caption-title{font-size:1.42rem;font-weight:800;line-height:1.25;color:#0f172a;display:-webkit-box;-webkit-line-clamp:2;-webkit-box-orient:vertical;overflow:hidden}.page-home .book--folder-3d{max-width:168px!important;overflow:visible!important;align-self:end;margin-bottom:0!important}.page-home .book.book--folder-3d .book-cover,.page-home .book--folder-3d .book-cover,.page-home .book-cover--folder-3d{position:relative!important;background:transparent!important;box-shadow:none!important;border:none!important;overflow:visible!important;aspect-ratio:auto!important;width:100%!important;height:auto!important;margin-bottom:0!important;display:flex!important;align-items:flex-end!important}.book-folder-3d{position:relative;width:100%;height:auto;overflow:visible;display:block;margin-bottom:-12px}.book-folder-3d-photo{width:100%;height:auto;display:block;pointer-events:none;filter:none;object-fit:contain;object-position:bottom center;vertical-align:bottom}.book-folder-3d-ribbon{position:absolute;top:7%;left:5%;width:70%;display:flex;flex-direction:column;align-items:center;justify-content:center;padding:.2em .26em .24em;box-sizing:border-box;background:linear-gradient(180deg,#ffe38a,#f5b942 52%,#d97706);border:1px solid #fff3c4;border-radius:4px;box-shadow:0 1px #fff6d5,0 3px #92400e,0 6px 10px #00000059;transform:perspective(240px) rotateX(18deg);pointer-events:none}.book-folder-3d-ribbon-line{display:block;color:#fff8dc;font-weight:800;font-size:clamp(1.2rem,4.4vw,1.55rem);line-height:1.12;text-align:center;letter-spacing:.01em;text-shadow:0 1px 0 #b45309,0 2px 0 #78350f,0 3px 4px rgba(0,0,0,.4);word-break:break-word}.book-folder-3d-ribbon--two .book-folder-3d-ribbon-line{font-size:clamp(.88rem,3.1vw,1.12rem)}.book-folder-3d-ribbon--mm .book-folder-3d-ribbon-line{font-family:Noto Sans Myanmar,Myanmar Text,Padauk,sans-serif;font-size:clamp(1.32rem,4.8vw,1.7rem);font-weight:700;line-height:1.28;letter-spacing:0}.page-home .book--category .book-cover,.page-home .book-cover--emoji{background:transparent!important;box-shadow:none!important;border:none!important;aspect-ratio:auto!important;height:auto!important;min-height:0!important;overflow:visible!important;display:flex;align-items:flex-end;justify-content:center;padding:0}.page-home .book-category-emoji{font-size:clamp(5.6rem,18vw,9.2rem);line-height:1;filter:drop-shadow(0 8px 16px rgba(0,0,0,.35))}.page-home img.book-category-flag{width:clamp(4.8rem,22vw,8.4rem);height:auto;max-width:100%;display:block;object-fit:contain;font-size:0}.page-home .book-cover,.page-home .book .book-cover{width:100%!important;height:auto!important;aspect-ratio:2 / 3}.page-home .book-cover-image{object-fit:cover!important;object-position:center center;background:#0b1220;left:10px!important;width:calc(100% - 10px)!important}.page-home .book-spine{width:10px!important;z-index:3}.page-home .book--category .book-caption{min-height:3.8em;overflow:visible}.page-home .book--category .book-caption-title{white-space:normal;overflow:visible;display:block;-webkit-line-clamp:unset;-webkit-box-orient:unset;word-break:break-word;line-height:1.2;min-height:2.4em;padding:0 2px}.page-home .author-shelf-item{width:100%;text-align:center}.page-home .author-shelf-label{display:block;margin-bottom:8px;color:#f8fafc;font-size:1.1rem;font-weight:800;white-space:normal;overflow:visible;text-overflow:unset;line-height:1.2;word-break:break-word}.page-home .author-shelf-emoji{font-size:clamp(5rem,16vw,8rem)}.page-home .author-shelf-photo{width:min(72%,160px);aspect-ratio:1;object-fit:cover;border-radius:12px;display:block}.page-home .book--category .book-cover,.page-home .book.book--category .book-cover{aspect-ratio:auto!important;height:auto!important}.page-home .book-title{display:none}.home-category-crumb{display:flex;align-items:center;gap:10px;margin:0 0 14px;color:#334155;font-weight:700}.home-category-back{border:none;background:#0f172a14;color:inherit;border-radius:999px;padding:6px 12px;cursor:pointer;font-weight:700}.page-home .shelf-board{position:relative;width:100%;height:20px;border-radius:0 0 4px 4px;background:linear-gradient(180deg,#ececec,#d8d8d8 52%,#c4c4c4);box-shadow:0 4px 8px #00000026,inset 0 2px 4px #fffffff2,inset 0 -2px 4px #0000001a;opacity:1;margin-top:-1px}.page-home .shelf-board:before{content:"";position:absolute;bottom:-8px;left:0;right:0;height:8px;background:linear-gradient(180deg,rgba(0,0,0,.1) 0%,transparent 100%)}body[data-bookshelf-theme=space] .page-home .shelf-board{background:linear-gradient(180deg,#ececec,#d8d8d8 52%,#c4c4c4);box-shadow:0 4px 10px #00000059,inset 0 2px 4px #fffffff2,inset 0 -2px 4px #0000001f;opacity:1}body[data-bookshelf-theme=space] .page-home .book-caption-author{color:#f8fafce0}body[data-bookshelf-theme=space] .page-home .book-caption-title{color:#f8fafc}body[data-bookshelf-theme=space] .page-home .home-login-section,body[data-bookshelf-theme=space] .page-home .home-announcements{background:#0f0c29b8;border-color:#667eea59;color:#e2e8f0}body[data-bookshelf-theme=space] .page-home .home-login-section-title,body[data-bookshelf-theme=space] .page-home .home-announcement-title{color:#f8fafc}body[data-bookshelf-theme=space] .page-home .home-login-field,body[data-bookshelf-theme=space] .page-home .home-announcement-body,body[data-bookshelf-theme=space] .page-home .home-announcements-empty,body[data-bookshelf-theme=space] .page-home .home-selection-search-meta{color:#cbd5e1}body[data-bookshelf-theme=space] .page-home .home-login-field input,body[data-bookshelf-theme=space] .page-home .home-selection-search-input{background:#ffffff14;border-color:#94a3b859;color:#f8fafc}body[data-bookshelf-theme=space] .page-home .home-announcement-card{background:#ffffff0f;border-color:#667eea40}body[data-bookshelf-theme=space] .page-home .home-login-mode-tabs{background:#ffffff14}body[data-bookshelf-theme=space] .page-home .home-login-mode-tab.active{background:linear-gradient(135deg,#667eea,#764ba2)}.practice-workspace.panel{padding:0;overflow:hidden;background:transparent;border:none;border-radius:0;box-shadow:none}.page-content.practice-page,.page-content.course-wizard-page{margin:0;padding:0;width:100%;min-height:100vh;background:transparent}.practice-page .practice-workspace,.course-wizard-page .practice-workspace{width:100%;min-height:100vh;height:100vh;max-height:100vh;background:transparent;border:none;border-radius:0;box-shadow:none}.practice-page .practice-workspace-body,.course-wizard-page .practice-workspace-body{gap:0;padding:0;flex:1 1 auto}.course-wizard-page .practice-workspace.panel,.practice-page .practice-workspace.panel,.course-wizard-page .practice-workspace,.practice-page .practice-workspace{border-radius:0!important;overflow:hidden!important}.course-wizard-page .practice-workspace-top-bar,.practice-page .practice-workspace-top-bar,.practice-workspace--epub .practice-workspace-top-bar,.practice-workspace--pdf .practice-workspace-top-bar{border-radius:0!important;overflow:visible!important;--pmp-nav-side-pad: 16px;padding:12px 16px!important;box-sizing:border-box!important}body[data-bookshelf-theme=space] .course-wizard-page .practice-workspace.panel,body[data-bookshelf-theme=space] .practice-page .practice-workspace.panel,body[data-bookshelf-theme=dinosaur] .course-wizard-page .practice-workspace.panel,body[data-bookshelf-theme=ocean] .course-wizard-page .practice-workspace.panel{border-radius:0!important;overflow:hidden!important}.practice-workspace-top{display:grid;gap:10px;padding:14px 16px 12px;border-bottom:1px solid var(--shelf-border);background:linear-gradient(180deg,#ffffff 0%,var(--shelf-cream) 100%)}.practice-workspace-eyebrow{font-size:.78rem;font-weight:700;color:var(--shelf-sage-dark)}.practice-workspace-title{margin:0;font-size:clamp(1rem,2.4vw,1.25rem);line-height:1.25;color:var(--shelf-ink)}.practice-workspace-meta{font-size:.78rem;color:var(--shelf-ink-muted)}.practice-workspace-progress{height:5px;border-radius:999px;background:var(--shelf-editor-border);overflow:hidden}.practice-workspace-progress-bar{height:100%;background:var(--shelf-sage);border-radius:999px}.practice-workspace-desc{margin:0;font-size:.84rem;line-height:1.5;color:var(--shelf-ink-muted)}.practice-workspace-toolbar{display:flex;align-items:center;justify-content:space-between;gap:10px;flex-wrap:wrap}.practice-workspace-toolbar .panel-heading{margin:0;color:var(--shelf-ink-muted);font-size:.72rem;letter-spacing:.1em;text-transform:uppercase}.practice-workspace-toolbar .practice-header-actions{display:flex;gap:8px;flex-wrap:nowrap}.practice-workspace-step-header{padding:16px 24px;border-bottom:1px solid var(--shelf-border)}.practice-page .practice-workspace-step-header,.course-wizard-page .practice-workspace-step-header{padding:0;border-bottom:none}.practice-workspace-desc{margin:0;color:var(--shelf-ink-muted);font-size:1rem;line-height:1.6}.practice-workspace{display:flex;flex-direction:column;min-height:0;height:calc(100dvh - var(--app-header-height));max-height:calc(100dvh - var(--app-header-height))}.practice-workspace-body{display:flex;gap:16px;padding:24px;flex:1 1 auto;overflow:auto;position:relative;align-items:stretch}.practice-page .practice-workspace-body,.course-wizard-page .practice-workspace-body{gap:0;padding:0}.practice-workspace-editor-shell{flex:1 1 auto;min-width:0;display:flex;flex-direction:column;overflow:auto;position:relative!important}.practice-peek-desktop{width:50%;max-width:600px;display:flex;flex-direction:column;height:100%}.practice-peek-desktop pre{flex:1 1 auto;margin:0;overflow:auto}.course-wizard-page .practice-workspace-body{max-height:none!important;overflow:hidden!important}.practice-workspace .practice-text-label{flex:1;min-height:0;width:100%;display:flex;margin:0}.practice-workspace .practice-codearea,.practice-workspace .practice-textarea{width:100%;height:100%;min-height:100%;flex:1;resize:none;border:none;border-radius:0;padding:14px 16px;background:var(--shelf-editor-surface);color:var(--shelf-editor-text);font-family:ui-monospace,SFMono-Regular,Menlo,Monaco,Consolas,Liberation Mono,Courier New,monospace;font-size:.8125rem;line-height:1.55}.practice-workspace-content,.practice-workspace .practice-answer-html{width:100%;height:100%;min-height:0;overflow:auto;padding:14px 16px;background:var(--shelf-editor-surface);color:var(--shelf-editor-text);border:none;border-radius:0;font-size:.875rem;line-height:1.55}.practice-workspace .practice-tool-button{background:var(--shelf-card);color:var(--shelf-ink);border:1px solid var(--shelf-border-strong);border-radius:6px;min-height:30px;padding:4px 12px;font-size:.72rem;font-weight:700}.practice-workspace .practice-tool-button:hover{background:#8b8b7a1a}.practice-workspace .practice-peek-desktop{position:absolute;top:0;right:0;bottom:0;width:50%;max-width:600px;margin:0;padding:16px;background:#1e293b;color:#f8fafc;border-left:1px solid #374151;border-radius:0;box-shadow:-8px 0 32px #00000026;display:flex;flex-direction:column;z-index:10}.practice-workspace .practice-peek-desktop pre{flex:1;min-height:0;margin:0;overflow:auto;background:#111827;color:#f8fafc;padding:16px;border-radius:8px;border:1px solid #374151;font-size:.78rem;line-height:1.5}.practice-workspace .practice-peek-close{color:#94a3b8}.practice-workspace .practice-error-message{margin:12px;background:#fdf0ef;color:#7a3a3a;border:1px solid #e8c4c4}.practice-page .primary-button,.practice-page .footer-button{background:var(--shelf-sage);color:#fff}.practice-page .primary-button:hover,.practice-page .footer-button:hover{background:var(--shelf-sage-dark)}.practice-page .footer-button.secondary{background:transparent;color:var(--shelf-ink);border-color:var(--shelf-border-strong)}.practice-page .panel{background:var(--shelf-card);border-color:var(--shelf-border);box-shadow:0 6px 18px var(--shelf-shadow)}.practice-page .panel-heading,.practice-page .panel-body{color:var(--shelf-ink-muted)}.practice-page .modal-backdrop{background:#5a4e4673}.practice-page .modal{background:var(--shelf-cream);border:1px solid var(--shelf-border);max-width:min(92vw,var(--app-content-max))}.practice-page .modal-body pre{background:var(--shelf-editor-surface);color:var(--shelf-editor-text);border:1px solid var(--shelf-editor-border)}.practice-page .modal-body li{border-bottom-color:var(--shelf-border)}.course-wizard-page .course-step-quiz-body{padding-top:0}.course-wizard-page .course-quiz-question{background:var(--shelf-card);border-color:var(--shelf-border)}.course-wizard-page .course-quiz-option{background:var(--shelf-cream);border-color:var(--shelf-border);color:var(--shelf-ink)}@media (max-width: 720px){:root{--app-content-gutter: 12px;--practice-editor-height: clamp(300px, calc(100dvh - 190px) , 520px)}.page-home .home-categories .container{padding:14px 14px 20px}.app-header-inner.has-stage-nav{flex-wrap:nowrap;justify-content:space-between}.app-header-inner.has-stage-nav .app-stage-nav{flex:1 1 auto;min-width:0}.app-header-inner.has-stage-nav .nav-links,.nav-links{display:none}.practice-workspace-top{padding:12px 12px 10px}.practice-workspace .practice-codearea,.practice-workspace .practice-textarea{font-size:.78rem;padding:10px 12px}}.book.empty-space{display:flex;align-items:center;justify-content:center;visibility:visible}.book.empty-space .book-cover{border-radius:2px 6px 6px 2px;box-shadow:-4px 4px 8px #0000001a}.empty-book-text{font-size:10px;color:#000;text-align:center;font-weight:500}.book-cover{overflow:hidden}.book-icon{border:none!important;box-shadow:none!important;display:flex!important;justify-content:center!important;align-items:center!important;text-align:center!important;width:80px!important;height:80px!important;min-width:80px!important;min-height:80px!important}.book-spine{display:block!important}.page-home .home-hero{background:linear-gradient(180deg,#ffffff 0%,var(--shelf-cream) 100%)}.page-home .tab{color:var(--shelf-sage-dark);padding:10px 18px;font-size:15px;border-radius:999px;background:#8b8b7a1a;transition:all .2s ease}.page-home .tab:hover{color:var(--shelf-sage-dark);background:#8b8b7a33}.page-home .tab.active{background:linear-gradient(135deg,var(--shelf-sage) 0%,#6b6b5a 100%);color:#fff;box-shadow:0 2px 8px #8b8b7a4d}.page-home .hero-cta{background:linear-gradient(135deg,var(--shelf-sage) 0%,#6b6b5a 100%);color:#fff;box-shadow:0 4px 12px #8b8b7a4d;transition:all .2s ease}.page-home .hero-cta:hover{background:linear-gradient(135deg,#6b6b5a,#5a5a4a);transform:translateY(-2px);box-shadow:0 6px 16px #8b8b7a66}.page-home .hero-secondary{background:linear-gradient(135deg,#8b8b7a1a,#8b8b7a33);color:var(--shelf-sage-dark);border:1px solid var(--shelf-sage);transition:all .2s ease}.page-home .hero-secondary:hover{background:linear-gradient(135deg,#8b8b7a33,#8b8b7a4d);transform:translateY(-2px)}.practice-workspace .practice-tool-button{background:linear-gradient(135deg,#ffffff 0%,var(--shelf-cream) 100%);color:var(--shelf-sage-dark);border:1px solid var(--shelf-sage);transition:all .2s ease}.practice-workspace .practice-tool-button:hover{background:linear-gradient(135deg,var(--shelf-cream) 0%,rgba(139,139,122,.2) 100%);transform:translateY(-1px);box-shadow:0 2px 6px #8b8b7a33}