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h1{font-size:clamp(3.3rem,18vw,5rem)}.content-section,.inner-page,.simulation-page{width:calc(100% - 20px);padding:48px 0}.grade-grid,.chapter-grid{grid-template-columns:1fr}.grade-card{min-height:126px}.grade-title-row{align-items:flex-start}.large-grade-number{display:none}.simulation-toolbar{grid-template-columns:1fr auto}.simulation-title{grid-area:1/1/auto/-1}.back-button.compact{grid-area:2/1}.fullscreen-button{grid-area:2/2}.simulation-viewer{border-radius:13px;height:72vh;min-height:520px}.fullscreen-button{padding:10px 12px}.empty-state{flex-direction:column;align-items:flex-start}.site-header{flex-wrap:wrap}.account-menu{order:3;width:100%}.account-menu span{text-align:left;margin-right:auto}.access-page{padding:78px 12px 64px}.access-language{top:16px;right:16px}.access-card{border-radius:20px;padding:28px 22px}.account-form{grid-template-columns:1fr}.account-row{grid-template-columns:1fr 1fr}.account-row>div:first-child{grid-column:1/-1}.account-actions{grid-template-columns:1fr;grid-auto-flow:row}.account-actions button{padding:10px}.admin-count{display:none}}.teacher-activity{border:1px solid var(--line);background:#fff;border-radius:20px;margin-top:32px;padding:24px}.activity-heading{justify-content:space-between;align-items:center;gap:16px;display:flex}.activity-heading h2{margin:0;font-size:1.8rem}.activity-heading-actions{flex-wrap:wrap;justify-content:flex-end;gap:10px;display:flex}.activity-delete{color:#9b2020;font:inherit;cursor:pointer;background:#fff1f1;border:1px solid #efc7c7;border-radius:9px;padding:11px 14px;font-size:.9rem;font-weight:700}.activity-heading p,.activity-note{color:var(--muted);font-size:.9rem;line-height:1.6}.activity-filters{grid-template-columns:1.2fr .6fr 1.3fr 1fr 1fr;align-items:end;gap:12px;margin-top:20px;display:grid}.activity-filters label{gap:8px;min-width:0;font-size:.9rem;font-weight:700;display:grid}.activity-filters input,.activity-filters select{border:1px solid var(--line);width:100%;min-width:0;color:var(--navy);font:inherit;background:#f7fbfd;border-radius:9px;padding:11px}.activity-filters button,.activity-pagination button{border:1px solid var(--line);color:var(--navy);font:inherit;cursor:pointer;background:#f7fbfd;border-radius:9px;padding:11px 16px;font-size:.9rem;font-weight:700}.activity-filters button[type=submit]{color:#fff;background:var(--blue)}.teacher-activity button:disabled{opacity:.55;cursor:default}.activity-table-scroll{margin-top:20px;overflow-x:auto}.activity-table{border-collapse:collapse;text-align:left;width:100%;font-size:.9rem}.activity-table caption{text-align:left;color:var(--muted);padding-bottom:12px}.activity-table th{background:var(--navy);color:#fff;padding:13px 10px;font-weight:700}.activity-table td{border-bottom:1px solid var(--line);vertical-align:top;min-width:120px;padding:16px 10px;line-height:1.5}.activity-table td:nth-child(2){min-width:180px}.activity-table small{color:var(--muted);margin-top:5px;font-size:.8rem;display:block}.activity-pagination{justify-content:flex-end;align-items:center;gap:16px;margin-top:18px;display:flex}.activity-empty{border:1px dashed var(--line);color:var(--muted);border-radius:12px;padding:24px}@media (width<=900px){.activity-filters{grid-template-columns:1fr 1fr}}@media (width<=600px){.teacher-activity{padding:16px}.activity-heading{flex-wrap:wrap;align-items:flex-start}.activity-heading-actions{justify-content:flex-start}.activity-heading h2{font-size:1.5rem}.activity-filters{grid-template-columns:1fr}.activity-pagination{justify-content:center;gap:10px}}@property --tw-rotate-x{syntax:"*";inherits:false}@property --tw-rotate-y{syntax:"*";inherits:false}@property --tw-rotate-z{syntax:"*";inherits:false}@property --tw-skew-x{syntax:"*";inherits:false}@property --tw-skew-y{syntax:"*";inherits:false}@property --tw-border-style{syntax:"*";inherits:false;initial-value:solid}@property --tw-shadow{syntax:"*";inherits:false;initial-value:0 0 #0000}@property --tw-shadow-color{syntax:"*";inherits:false}@property --tw-shadow-alpha{syntax:"<percentage>";inherits:false;initial-value:100%}@property --tw-inset-shadow{syntax:"*";inherits:false;initial-value:0 0 #0000}@property --tw-inset-shadow-color{syntax:"*";inherits:false}@property --tw-inset-shadow-alpha{syntax:"<percentage>";inherits:false;initial-value:100%}@property --tw-ring-color{syntax:"*";inherits:false}@property --tw-ring-shadow{syntax:"*";inherits:false;initial-value:0 0 #0000}@property --tw-inset-ring-color{syntax:"*";inherits:false}@property --tw-inset-ring-shadow{syntax:"*";inherits:false;initial-value:0 0 #0000}@property --tw-ring-inset{syntax:"*";inherits:false}@property --tw-ring-offset-width{syntax:"<length>";inherits:false;initial-value:0}@property --tw-ring-offset-color{syntax:"*";inherits:false;initial-value:#fff}@property --tw-ring-offset-shadow{syntax:"*";inherits:false;initial-value:0 0 #0000}@property --tw-outline-style{syntax:"*";inherits:false;initial-value:solid}@property --tw-blur{syntax:"*";inherits:false}@property --tw-brightness{syntax:"*";inherits:false}@property --tw-contrast{syntax:"*";inherits:false}@property --tw-grayscale{syntax:"*";inherits:false}@property --tw-hue-rotate{syntax:"*";inherits:false}@property --tw-invert{syntax:"*";inherits:false}@property --tw-opacity{syntax:"*";inherits:false}@property --tw-saturate{syntax:"*";inherits:false}@property --tw-sepia{syntax:"*";inherits:false}@property --tw-drop-shadow{syntax:"*";inherits:false}@property --tw-drop-shadow-color{syntax:"*";inherits:false}@property --tw-drop-shadow-alpha{syntax:"<percentage>";inherits:false;initial-value:100%}@property --tw-drop-shadow-size{syntax:"*";inherits:false}@property --tw-ease{syntax:"*";inherits:false}