:root{--primary: #7B1FA2;--primary-light: #9C27B0;--primary-fade: #F3E5F5;--bg-gradient: linear-gradient(180deg, #FDFBFD 0%, #F3E5F5 100%);--container-width: 1100px;--success: #2E7D32;--danger: #C62828;--info: #1565C0;--warning: #F9A825;--radius: 16px;--shadow: 0 4px 20px rgba(123, 31, 162, .08)}html,body{overflow-x:hidden;width:100%}main{max-width:var(--container-width);margin:1rem auto;padding:0 .5rem}mjx-container[display=true]{white-space:normal!important;overflow-x:auto!important;overflow-y:hidden!important;max-width:100%;padding-bottom:2px!important}mjx-container:not([display=true]){overflow:visible!important}.sj-card{background:var(--card-bg, #fff);border-radius:var(--radius);padding:1.5rem;box-shadow:var(--shadow);position:relative;overflow:hidden;border:1px solid rgba(123,31,162,.05);transition:transform .2s,box-shadow .2s;margin-bottom:1.5rem;overflow-wrap:break-word;word-break:break-word}.sj-card:hover{transform:translateY(-3px);box-shadow:0 6px 25px #7b1fa21f}.sj-card:before{content:attr(data-step);position:absolute;top:-15px;left:-10px;font-family:Poppins,sans-serif;font-size:7rem;font-weight:900;color:var(--primary-fade);opacity:.8;z-index:0;line-height:1;pointer-events:none}.card-content{position:relative;z-index:1}.box-ncert{background:#f3e5f5;border-left:5px solid var(--primary);padding:1rem;border-radius:0 12px 12px 0;margin:1rem 0}.box-formula{background:#fffde7;border:2px solid var(--warning);padding:1rem;border-radius:12px;margin:1rem 0;text-align:center}.box-pyq{background:#e3f2fd;border-left:5px solid var(--info);padding:1rem;margin:.8rem 0;border-radius:8px}.box-mistake{background:#ffebee;border:1px solid var(--danger);color:var(--danger);padding:1rem;border-radius:8px;margin-top:10px}.box-tip{background:#e8f5e9;border-left:5px solid var(--success);padding:1rem;border-radius:8px;margin-top:10px}table{width:100%;border-collapse:collapse;margin:1rem 0}th,td{padding:12px;border:1px solid #eee;text-align:left}th{background:var(--primary);color:#fff}.grid-2{display:grid;grid-template-columns:1fr 1fr;gap:1.5rem}.grid-2>*,.grid-3>*{min-width:0}.grid-3{display:grid;grid-template-columns:repeat(3,1fr);gap:1rem}.card-bg-light{background:#f9f9f9;padding:1rem;border-radius:8px}.card-bg-success{background:#e8f5e9;padding:1rem;border-radius:8px}.card-bg-danger{background:#ffebee;padding:1rem;border-radius:8px}.card-bg-light-bordered{background:#f9f9f9;padding:1rem;border-radius:12px;margin-bottom:2rem}.card-bg-light-sm{background:#fafafa;padding:1rem;border-radius:8px;margin-bottom:1rem}.toggle-btn{background:transparent;border:1px solid var(--primary);color:var(--primary);padding:8px 20px;border-radius:25px;cursor:pointer;font-size:.9rem;margin-top:15px;transition:all .3s;display:inline-flex;align-items:center;gap:8px;font-weight:500}.toggle-btn:hover{background:var(--primary);color:#fff;transform:translateY(-2px)}.answer-block{display:none;margin-top:15px;padding:20px;background:#f8f9fa;border-radius:12px;border-left:4px solid var(--primary);box-shadow:inset 0 2px 4px #00000005}.checklist-item{display:flex;align-items:center;gap:10px;margin-bottom:10px;cursor:pointer}.checklist-item input[type=checkbox]{width:18px;height:18px;cursor:pointer}@media(max-width:768px){.grid-2,.grid-3{grid-template-columns:1fr}.sj-card{padding:1.25rem}main{padding:0 .75rem}.sj-card:before{font-size:5rem;top:-10px}}\fffd/\fffd*\fffd  \fffdH\fffdi\fffd d\fffd e\fffd  \fffds\fffd c\fffdr\fffdo\fffdl\fffdl\fffd b\fffd a\fffdr\fffds\fffd  \fffds\fffdi\fffdt\fffd e\fffd-\fffdw\fffdi\fffd d\fffd e\fffd  \fffd*\fffd/\fffd  \fffd*\fffd  \fffd{\fffd  \fffds\fffd c\fffdr\fffdo\fffdl\fffdl\fffd b\fffd a\fffdr\fffd-\fffdw\fffdi\fffd d\fffdt\fffdh\fffd:\fffd  \fffdn\fffdo\fffdn\fffd e\fffd  \fffd!\fffdi\fffdm\fffdp\fffdo\fffdr\fffdt\fffd a\fffdn\fffdt\fffd;\fffd  \fffd-\fffdm\fffds\fffd-\fffdo\fffdv\fffd e\fffdr\fffd f\fffdl\fffdo\fffdw\fffd-\fffds\fffdt\fffdy\fffdl\fffd e\fffd:\fffd  \fffdn\fffdo\fffdn\fffd e\fffd  \fffd!\fffdi\fffdm\fffdp\fffdo\fffdr\fffdt\fffd a\fffdn\fffdt\fffd;\fffd  \fffd}\fffd  \fffd*\fffd:\fffd:\fffd-\fffdw\fffd e\fffd b\fffdk\fffdi\fffdt\fffd-\fffds\fffd c\fffdr\fffdo\fffdl\fffdl\fffd b\fffd a\fffdr\fffd  \fffd{\fffd  \fffd d\fffdi\fffds\fffdp\fffdl\fffd a\fffdy\fffd:\fffd  \fffdn\fffdo\fffdn\fffd e\fffd  \fffd!\fffdi\fffdm\fffdp\fffdo\fffdr\fffdt\fffd a\fffdn\fffdt\fffd;\fffd  \fffdw\fffdi\fffd d\fffdt\fffdh\fffd:\fffd  \fffd 0\fffd  \fffd!\fffdi\fffdm\fffdp\fffdo\fffdr\fffdt\fffd a\fffdn\fffdt\fffd;\fffd  \fffdh\fffd e\fffdi\fffdg\fffdh\fffdt\fffd:\fffd  \fffd 0\fffd  \fffd!\fffdi\fffdm\fffdp\fffdo\fffdr\fffdt\fffd a\fffdn\fffdt\fffd;\fffd  \fffd}\fffd  \fffd  \fffd{}