:root{--navy:#003d86;--pink:#d94f6a;--green:#00994a;--purple:#8f74e0;--orange:#f29c00;--cream:#fff8e1;--paper:#fffdf7;--ink:#1f2440;--muted:#5d6280;--line:#e7e2d3;--radius:18px;color:var(--ink);background:var(--paper);-webkit-text-size-adjust:100%;font-family:Nunito,system-ui,-apple-system,sans-serif}*{box-sizing:border-box}html,body,#root{min-height:100%;margin:0}body{background:var(--paper)}a{color:inherit;text-decoration:none}img{max-width:100%;display:block}button{font:inherit;cursor:pointer}.page:before,.viewer:before{content:"";background:linear-gradient(90deg, #ff9aa2 0 16.6%, var(--navy) 0 33.3%, var(--green) 0 50%, #a78be8 0 66.6%, #f7c6c7 0 83.3%, var(--orange) 0);height:6px;display:block}.header{padding:10px 16px;padding-top:max(10px, env(safe-area-inset-top));background:var(--paper);border-bottom:1px solid var(--line);grid-template-columns:1fr auto 1fr;align-items:center;display:grid}.brand img{width:auto;height:56px}.back-link{color:var(--navy);white-space:nowrap;font-size:1.05rem;font-weight:800}.back-link span{vertical-align:-.08em;font-size:1.4em;line-height:0}.container{max-width:1100px;margin:0 auto;padding:24px 16px 48px}.center{text-align:center}.page-title{color:var(--navy);margin:0 0 6px;font-size:clamp(1.6rem,4vw,2.3rem);font-weight:900}.lead{color:var(--muted);margin:0 0 24px;font-size:1.1rem}.meta{color:var(--pink);margin:0 0 20px;font-weight:800}.button{background:var(--navy);color:#fff;border-radius:999px;margin-top:16px;padding:14px 26px;font-weight:800;display:inline-block}.course-grid{grid-template-columns:repeat(auto-fill,minmax(260px,1fr));gap:20px;display:grid}.course-card{border:2px solid var(--line);border-radius:var(--radius);background:#fff;transition:transform .15s,box-shadow .15s;overflow:hidden}.course-card:hover{transform:translateY(-3px);box-shadow:0 10px 24px #003d861f}.course-card img{aspect-ratio:1;object-fit:cover;width:100%}.course-card-body{padding:14px 16px 16px}.course-card h2{color:var(--navy);margin:0 0 4px;font-size:1.2rem}.course-card .meta{margin:0;font-size:.95rem}.lesson-list{grid-template-columns:repeat(auto-fill,minmax(300px,1fr));gap:16px;margin:0;padding:0;list-style:none;display:grid}.lesson-card{border:2px solid var(--line);border-radius:var(--radius);background:#fff;transition:transform .15s,box-shadow .15s;display:block;overflow:hidden}.lesson-card:hover{transform:translateY(-3px);box-shadow:0 10px 24px #003d861f}.lesson-card img{aspect-ratio:3/2;object-fit:cover;border-bottom:2px solid var(--line);width:100%}.lesson-card div{padding:12px 16px 14px}.lesson-card h2{color:var(--navy);margin:2px 0 0;font-size:1.1rem}.lesson-num{color:var(--pink);text-transform:uppercase;letter-spacing:.04em;font-size:.85rem;font-weight:900}.viewer{background:var(--cream);flex-direction:column;display:flex;position:fixed;inset:0;overflow:hidden}.viewer-top{padding:8px 16px;padding-top:max(8px, env(safe-area-inset-top));padding-left:max(16px, env(safe-area-inset-left));padding-right:max(16px, env(safe-area-inset-right));background:var(--paper);border-bottom:1px solid var(--line);grid-template-columns:auto 1fr auto;align-items:center;gap:12px;display:grid}.viewer-title{text-align:center;min-width:0}.viewer-title h1{color:var(--navy);white-space:nowrap;text-overflow:ellipsis;margin:0;font-size:1.15rem;overflow:hidden}.zoom-buttons{gap:6px;display:flex}.zoom-buttons button{border:2px solid var(--line);width:40px;height:40px;color:var(--navy);background:#fff;border-radius:50%;font-size:1.4rem;font-weight:900;line-height:1}.viewer-stage{flex-direction:column;flex:1;min-height:0;display:flex;position:relative}.zoom-wrapper{flex:1;width:100%!important;height:100%!important}.zoom-content{justify-content:center;align-items:center;width:100%!important;height:100%!important;display:flex!important}.infographic{object-fit:contain;-webkit-user-select:none;user-select:none;-webkit-touch-callout:none;max-width:100%;max-height:100%}.rotate-hint{text-align:center;color:var(--muted);margin:0;padding:6px 16px;font-size:.9rem;font-weight:700;display:none}@media (orientation:portrait) and (width<=700px){.rotate-hint{display:block}}.viewer-bottom{padding:10px 16px;padding-bottom:max(10px, env(safe-area-inset-bottom));padding-left:max(16px, env(safe-area-inset-left));padding-right:max(16px, env(safe-area-inset-right));background:var(--paper);border-top:1px solid var(--line);grid-template-columns:1fr auto 1fr;align-items:center;gap:10px;display:grid}.nav-button{color:var(--navy);padding:10px 4px;font-size:1.05rem;font-weight:900}.viewer-bottom .nav-button:last-child{text-align:right}.nav-button.disabled{opacity:.3}.print-button{background:var(--green);color:#fff;white-space:nowrap;border-radius:999px;padding:12px 22px;font-size:1.05rem;font-weight:900;box-shadow:0 4px #007636}.print-button:active{transform:translateY(2px);box-shadow:0 2px #007636}.toast{left:16px;right:16px;bottom:calc(80px + env(safe-area-inset-bottom));background:var(--navy);color:#fff;text-align:center;border-radius:14px;max-width:480px;margin:0 auto;padding:12px 16px;font-weight:700;position:fixed;box-shadow:0 8px 24px #0003}@media (orientation:landscape) and (height<=500px){.viewer{flex-direction:row}.viewer:before{display:none}.viewer-top,.viewer-bottom{text-align:center;width:116px;padding:max(10px, env(safe-area-inset-top)) 8px max(10px, env(safe-area-inset-bottom));border:0;flex-direction:column;flex:none;justify-content:space-between;align-items:center;gap:8px;display:flex}.viewer-top{padding-left:max(8px, env(safe-area-inset-left));border-right:1px solid var(--line)}.viewer-bottom{padding-right:max(8px, env(safe-area-inset-right));border-left:1px solid var(--line)}.viewer-title{flex-direction:column;flex:1;justify-content:center;display:flex}.viewer-title .lesson-num{font-size:.75rem}.viewer-title h1{white-space:normal;-webkit-line-clamp:4;-webkit-box-orient:vertical;font-size:.9rem;line-height:1.2;display:-webkit-box}.back-link{font-size:.95rem}.zoom-buttons button{width:38px;height:38px;font-size:1.25rem}.viewer-bottom .nav-button,.viewer-bottom .nav-button:last-child{text-align:center;padding:8px 4px;font-size:1rem}.print-button{white-space:normal;text-align:center;border-radius:18px;padding:10px;font-size:.9rem;line-height:1.25;box-shadow:0 3px #007636}.no-worksheet{font-size:.8rem}.toast{bottom:max(12px, env(safe-area-inset-bottom))}}@media (orientation:landscape) and (height<=500px) and (width<=700px){.viewer-top,.viewer-bottom{width:96px;padding-left:6px;padding-right:6px}.zoom-buttons button{width:36px;height:36px}.print-button{padding:8px 6px;font-size:.82rem}.viewer-title h1{font-size:.82rem}}@media (width<=420px){.print-button{padding:11px 16px;font-size:1rem}.back-link{font-size:.95rem}.brand img{height:48px}}.signin-page{background:var(--cream);flex-direction:column;min-height:100dvh;display:flex}.signin-card{border:2px solid var(--line);background:#fff;border-radius:24px;width:min(440px,100% - 32px);margin:32px auto;padding:28px 24px;box-shadow:0 12px 32px #003d8614}.signin-logo{width:180px;margin:0 auto 12px}.signin-card h1{color:var(--navy);text-align:center;margin:0 0 8px;font-size:1.6rem;font-weight:900}.signin-card .lead{text-align:center;margin-bottom:20px;font-size:1rem}.signin-card label{color:var(--navy);margin-bottom:6px;font-weight:800;display:block}.signin-card input{width:100%;font:inherit;border:2px solid var(--line);background:var(--paper);color:var(--ink);border-radius:14px;padding:14px 16px;font-size:1.1rem}.signin-card input:focus{border-color:var(--navy);outline:none}.code-input{letter-spacing:.3em;text-align:center;font-weight:900;font-size:1.5rem!important}.button{text-align:center;border:0}.button.wide{width:100%;margin-top:16px;font-size:1.1rem}.button:disabled{opacity:.6}.small{color:var(--muted);margin-top:16px;font-size:.92rem;line-height:1.5}.small a{color:var(--navy);font-weight:800;text-decoration:underline}.error{color:#b3261e;background:#fdecea;border-radius:12px;margin-top:16px;padding:10px 14px;font-weight:700}.link-button{color:var(--navy);background:0 0;border:0;padding:0;font-weight:800}.link-button.inline{font-size:inherit;text-decoration:underline}.header-right{justify-self:end}.narrow{max-width:560px}.locked-cover{border-radius:var(--radius);border:2px solid var(--line);width:220px;margin:8px auto 20px}.empty-shelf{max-width:560px}.thumb-placeholder{aspect-ratio:3/2;border-bottom:2px solid var(--line);background:#f3efe3}.print-button.waiting{opacity:.55}.loading{color:var(--muted);flex-direction:column;flex:1;justify-content:center;align-items:center;gap:10px;padding:48px 16px;font-weight:700;display:flex}.spinner{border:4px solid var(--line);border-top-color:var(--orange);border-radius:50%;width:36px;height:36px;animation:.8s linear infinite spin}@keyframes spin{to{transform:rotate(360deg)}}.header-links{align-items:center;gap:14px;display:inline-flex}.lang-tabs{flex-wrap:wrap;gap:8px;margin:8px 0 16px;display:flex}.lang-tabs button{border:2px solid var(--line);color:var(--navy);background:#fff;border-radius:999px;padding:8px 16px;font-weight:800}.lang-tabs button.active{background:var(--navy);border-color:var(--navy);color:#fff}.filters{grid-template-columns:1fr minmax(0,320px);gap:10px;margin-bottom:12px;display:grid}.filters input,.filters select{width:100%;font:inherit;border:2px solid var(--line);color:var(--ink);background:#fff;border-radius:14px;padding:12px 14px;font-size:1rem}@media (width<=600px){.filters{grid-template-columns:1fr}}.catalog-grid{grid-template-columns:repeat(auto-fill,minmax(200px,1fr));gap:16px;margin-bottom:24px;display:grid}.catalog-card{border:2px solid var(--line);border-radius:var(--radius);background:#fff;flex-direction:column;display:flex;overflow:hidden}.catalog-card img{aspect-ratio:1;object-fit:cover;background:#f3efe3;width:100%}.catalog-card-body{flex-direction:column;flex:1;gap:10px;padding:12px 14px 14px;display:flex}.catalog-card h2{color:var(--navy);flex:1;margin:0;font-size:1rem;line-height:1.3}.button.compact{text-align:center;margin-top:0;padding:10px 16px;font-size:.95rem}.button.buy{background:var(--green)}.badge{background:var(--orange);color:#fff;text-transform:uppercase;letter-spacing:.04em;border-radius:999px;align-self:flex-start;padding:3px 10px;font-size:.75rem;font-weight:900}.owned-note{color:var(--green);font-size:.9rem;font-weight:800}@media (width<=420px){.catalog-grid{grid-template-columns:repeat(2,1fr);gap:10px}.catalog-card h2{font-size:.9rem}}.catalog-card-link{flex-direction:column;flex:1;display:flex}.catalog-card-link .catalog-card-body{padding-bottom:4px}.catalog-card-action{padding:0 14px 14px}.catalog-card-action .button{display:block}.product-top{grid-template-columns:minmax(0,1fr) minmax(0,1fr);align-items:start;gap:32px;display:grid}@media (width<=760px){.product-top{grid-template-columns:1fr;gap:20px}}.product-cover{border-radius:var(--radius);border:2px solid var(--line);background:#fff;width:100%}.chips{flex-wrap:wrap;gap:8px;margin-bottom:10px;display:flex}.chip{color:var(--navy);background:#eef2fb;border-radius:999px;padding:5px 12px;font-size:.85rem;font-weight:800}.chip.bundle{background:var(--orange);color:#fff}.buy-box,.owned-box{border:2px solid var(--line);border-radius:var(--radius);background:#fff;margin-top:8px;padding:18px}.buy-box .price{color:var(--navy);margin:0 0 4px;font-size:2rem;font-weight:900}.buy-box .button.buy{background:var(--green);box-shadow:0 4px #007636}.owned-box p{color:var(--green);margin:0 0 8px;font-weight:800}.product-section{margin-top:36px}.product-section h2{color:var(--navy);margin:0 0 14px;font-size:1.4rem;font-weight:900}.preview-row{grid-template-columns:repeat(3,1fr);gap:12px;display:grid}.preview-row figure{margin:0}.preview-row img{aspect-ratio:3/2;object-fit:cover;border:2px solid var(--line);border-radius:12px;width:100%}.preview-row figcaption{color:var(--muted);margin-top:4px;font-size:.85rem;font-weight:800}@media (width<=520px){.preview-row{grid-template-columns:repeat(2,1fr)}.preview-row figure:nth-child(3){display:none}}.lesson-outline{gap:8px;margin:0;padding:0;list-style:none;display:grid}.lesson-outline li{border:2px solid var(--line);color:var(--ink);background:#fff;border-radius:14px;padding:12px 14px;font-weight:800}.lesson-outline .lesson-num{margin-right:6px}.bundle-grid{grid-template-columns:repeat(auto-fill,minmax(150px,1fr));gap:12px;display:grid}.bundle-course{border:2px solid var(--line);color:var(--ink);background:#fff;border-radius:16px;flex-direction:column;padding-bottom:10px;text-decoration:none;display:flex;overflow:hidden}.bundle-course img,.bundle-course .cover-placeholder{aspect-ratio:1;object-fit:cover;width:100%;margin-bottom:8px}.bundle-course-title{color:var(--navy);padding:0 10px;font-weight:900;line-height:1.25}.bundle-course .outline-note{padding:0 10px}.bundle-outline{gap:10px;display:grid}.bundle-outline details{border:2px solid var(--line);background:#fff;border-radius:14px;padding:12px 14px}.bundle-outline summary{color:var(--navy);cursor:pointer;font-weight:900}.bundle-outline details[open] summary{margin-bottom:10px}.bundle-outline .lesson-outline li{border-width:1px;padding:8px 12px}.outline-note{color:var(--muted);margin-top:2px;font-size:.85rem;font-weight:700;display:block}.how-grid{grid-template-columns:repeat(3,1fr);gap:14px;display:grid}@media (width<=760px){.how-grid{grid-template-columns:1fr}}.how-grid>div{background:var(--cream);border-radius:var(--radius);padding:16px}.how-grid span{font-size:1.8rem}.how-grid h3{color:var(--navy);margin:6px 0 4px}.how-grid p{color:var(--muted);margin:0}.no-worksheet{color:var(--muted);text-align:center;font-size:.9rem;font-weight:700}.cover-placeholder{aspect-ratio:1;background:#f3efe3}.install-card{border:2px solid var(--line);border-radius:var(--radius);background:#fff;align-items:flex-start;gap:16px;margin:0 0 24px;padding:16px;display:flex}.install-icon{border-radius:14px;flex-shrink:0;width:56px;height:56px}.install-text{min-width:0}.install-text h2{color:var(--navy);margin:0 0 4px;font-size:1.15rem;font-weight:900}.install-text p{color:var(--muted);margin:0;line-height:1.5}.install-actions{flex-wrap:wrap;align-items:center;gap:16px;margin-top:12px;display:flex}.worksheet-actions{justify-content:center;gap:8px;display:flex}.fill-button{background:var(--navy);box-shadow:0 4px #00285a}.fill-button:active{box-shadow:0 2px #00285a}@media (width<=420px){.worksheet-actions .print-button{padding:11px 13px;font-size:.95rem}.viewer-bottom{padding-left:max(10px, env(safe-area-inset-left));padding-right:max(10px, env(safe-area-inset-right));gap:6px}}@media (orientation:landscape) and (height<=500px){.worksheet-actions{flex-direction:column}.fill-button{box-shadow:0 3px #00285a}}.sheet-page{background:var(--cream);flex-direction:column;display:flex;position:fixed;inset:0;overflow:hidden}.sheet-page .viewer-title h1{font-size:1rem}.save-state{color:var(--muted);min-height:1em;font-size:.78rem;font-weight:800;display:block}.save-saved{color:var(--green)}.save-error,.save-missing{color:#b3261e}.sheet-stage{touch-action:none;-webkit-user-select:none;user-select:none;-webkit-touch-callout:none;background:#ece6d6;flex:1;min-height:0;position:relative;overflow:hidden}.tool-pen .sheet-stage{cursor:crosshair}.tool-type .sheet-stage{cursor:text}.tool-eraser .sheet-stage{cursor:cell}.sheet-paper{transform-origin:0 0;will-change:transform;background:#fff;position:absolute;top:0;left:0;box-shadow:0 4px 18px #00000026}.sheet-paper img{pointer-events:none;width:100%;height:100%;display:block}.sheet-paper .loading{background:#fffc;position:absolute;inset:0}.sheet-paper svg{pointer-events:none;width:100%;height:100%;position:absolute;inset:0;overflow:visible}.sheet-paper path{fill:none;stroke-linecap:round;stroke-linejoin:round}.sheet-text{pointer-events:none;font-family:Nunito,system-ui,sans-serif;font-weight:700;position:absolute}.sheet-text textarea{font:inherit;color:inherit;resize:none;white-space:pre;field-sizing:content;-webkit-user-select:text;user-select:text;background:0 0;border:1px dashed #0000;border-radius:.2em;outline:none;min-width:2ch;margin:0;padding:.15em .25em;display:block;overflow:hidden}.tool-type .sheet-text textarea{pointer-events:auto;border-color:#003d864d}.sheet-text.editing textarea{border-color:var(--orange);background:#ffffffd9}.text-handle{text-align:center;width:.9em;color:var(--navy);cursor:grab;pointer-events:auto;font-size:1.1em;line-height:1;position:absolute;top:50%;left:-1em;transform:translateY(-50%)}.sheet-message{text-align:center;color:var(--muted);flex-direction:column;justify-content:center;align-items:center;gap:16px;padding:24px;font-weight:700;display:flex;position:absolute;inset:0}.sheet-tools{padding:8px 12px;padding-bottom:max(8px, env(safe-area-inset-bottom));padding-left:max(12px, env(safe-area-inset-left));padding-right:max(12px, env(safe-area-inset-right));background:var(--paper);border-top:1px solid var(--line);flex-wrap:wrap;justify-content:center;align-items:center;gap:8px 10px;display:flex}.tool-group{background:#f3efe3;border-radius:14px;gap:4px;padding:3px;display:flex}.tool-group button{background:0 0;border:0;border-radius:11px;flex-direction:column;align-items:center;gap:1px;min-width:52px;padding:5px 6px;font-size:1.15rem;line-height:1.1;display:flex}.tool-group button span{color:var(--navy);font-size:.72rem;font-weight:800}.tool-group button.active{background:#fff;box-shadow:0 1px 4px #00000026}.sheet-print{border:0;padding:10px 18px;font-size:1rem}.colour-row{flex-wrap:wrap;flex-basis:100%;justify-content:center;align-items:center;gap:10px;display:flex}.colour-dot{width:30px;height:30px;box-shadow:0 0 0 2px var(--line);border:3px solid #fff;border-radius:50%;padding:0}.colour-dot.active{box-shadow:0 0 0 3px var(--navy)}.size-button{border:2px solid var(--line);color:var(--navy);background:#fff;border-radius:999px;padding:4px 12px;font-weight:800}.size-button.active{border-color:var(--navy)}.tool-hint{color:var(--muted);font-size:.8rem;font-weight:700}@media (width<=440px){.sheet-tools{padding-left:max(8px, env(safe-area-inset-left));padding-right:max(8px, env(safe-area-inset-right));gap:6px}.tool-group{gap:2px}.tool-group button{min-width:42px;padding:4px 3px;font-size:1.05rem}.tool-group button span{font-size:.66rem}.sheet-print{padding:9px 12px;font-size:.9rem;box-shadow:0 3px #007636}.tool-hint{display:none}.colour-row{gap:8px}.colour-dot{width:28px;height:28px}}@media (orientation:landscape) and (height<=500px){.sheet-tools{padding-top:4px;padding-bottom:max(4px, env(safe-area-inset-bottom));gap:6px}.tool-hint{display:none}.colour-row{flex-basis:auto}.sheet-page .viewer-top{padding-top:max(4px, env(safe-area-inset-top));padding-bottom:4px}}.sheet-dialog{z-index:10;background:#1f244073;justify-content:center;align-items:flex-end;padding:16px;display:flex;position:fixed;inset:0}.sheet-dialog-card{background:var(--paper);border-radius:var(--radius);width:100%;max-width:420px;margin-bottom:env(safe-area-inset-bottom);flex-direction:column;gap:10px;padding:20px;display:flex}.sheet-dialog-card h2{color:var(--navy);text-align:center;margin:0 0 4px;font-size:1.2rem}.sheet-dialog-card .link-button{padding:8px}.sheet-dialog-card .button{margin-top:0}.button.secondary{color:var(--navy);border:2px solid var(--navy);background:#fff}@media (width>=700px){.sheet-dialog{align-items:center}}.sheet-page .toast{bottom:calc(140px + env(safe-area-inset-bottom))}.update-banner{z-index:50;left:50%;top:max(10px, env(safe-area-inset-top));background:var(--navy);color:#fff;border-radius:16px;align-items:center;gap:10px;width:calc(100% - 24px);max-width:460px;padding:10px 12px 10px 16px;font-weight:700;display:flex;position:fixed;transform:translate(-50%);box-shadow:0 8px 24px #00000040}.update-banner span{flex:1}.update-now{background:var(--orange);color:#fff;white-space:nowrap;border:0;border-radius:999px;padding:8px 14px;font-weight:900}.update-later{color:#fff;padding:4px 6px;font-size:1.1rem}