.prep{--pr-max:1860px;--pr-gutter:clamp(16px, 2.2vw, 40px);--pr-side-w:232px;--pr-col-gap:clamp(18px, 1.8vw, 30px);background:var(--bg);color:var(--text);min-height:100vh;font-family:var(--font-sans), var(--font-devanagari), "Noto Sans Devanagari", "Kalimati", "Mangal", system-ui, sans-serif;flex-direction:column;line-height:1.55;display:flex}.prep .pr-header-in,.prep .pr-shell,.prep .pr-footer-in,.prep .pr-footer-bottom{max-width:var(--pr-max);padding-inline:var(--pr-gutter);width:100%;margin-inline:auto}.prep a{color:inherit}.prep .pr-header{background:var(--surface);border-bottom:1px solid var(--border);z-index:20;position:sticky;top:0}.prep .pr-header-in{align-items:center;gap:clamp(12px,1.6vw,26px);padding-block:10px;display:flex}.prep .pr-brand{flex-shrink:0;align-items:center;gap:10px;text-decoration:none;display:flex}.prep .pr-brand img{width:auto;height:34px;display:block}.prep .pr-brand-text{line-height:1.15;display:block}.prep .pr-brand-text .n{letter-spacing:-.02em;color:var(--text);font-size:17px;font-weight:800;display:block}.prep .pr-brand-text .n .accent{color:var(--primary)}.prep .pr-brand-text .t{color:var(--text-muted);letter-spacing:.02em;font-size:10.5px;display:block}.prep .pr-search{flex:auto;min-width:0;max-width:780px}.prep .pr-search input{background:var(--surface-2);border:1px solid var(--border);width:100%;color:var(--text);border-radius:999px;padding:9px 18px;font-size:14px}.prep .pr-search input:focus-visible{outline:2px solid var(--primary);outline-offset:1px}.prep .pr-header-actions{align-items:center;gap:12px;margin-left:auto;display:flex}.prep .pr-header-actions .who{color:var(--text-muted);white-space:nowrap;font-size:13.5px}.prep .pr-shell{grid-template-columns:var(--pr-side-w) minmax(0, 1fr);gap:var(--pr-col-gap);flex:1;align-items:start;padding-block:20px;display:grid}.prep .pr-side{flex-direction:column;gap:2px;min-width:0;display:flex;position:sticky;top:74px}.prep .pr-side a,.prep .pr-side 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.pr-main{min-width:0;padding-bottom:48px}.prep .pr-hero{background:linear-gradient(120deg, var(--primary), var(--primary-hover));color:#fff;border-radius:var(--radius-lg);margin-bottom:26px;padding:clamp(24px,4vw,40px)}.prep .pr-hero h1{letter-spacing:-.025em;text-wrap:balance;max-width:22ch;margin:0 0 10px;font-size:clamp(24px,3.4vw,34px);line-height:1.12}.prep .pr-hero p{opacity:.9;max-width:56ch;margin:0 0 18px;font-size:15px}.prep .pr-hero .pr-btn{color:var(--primary-fill);background:#fff}.prep .pr-sect{justify-content:space-between;align-items:baseline;gap:12px;margin:26px 0 12px;display:flex}.prep .pr-sect h2{letter-spacing:-.015em;margin:0;font-size:18px;font-weight:700}.prep .pr-sect .sub{color:var(--text-muted);font-size:13px}.prep .pr-sect a{color:var(--primary);white-space:nowrap;font-size:13.5px;font-weight:600;text-decoration:none}.prep .pr-cats{grid-template-columns:repeat(auto-fill,minmax(108px,1fr));gap:10px;display:grid}.prep .pr-cat{background:var(--surface);border:1px solid var(--border);border-radius:var(--radius);text-align:center;padding:14px 10px 12px;text-decoration:none;transition:border-color .15s}.prep .pr-cat:hover{border-color:var(--primary)}.prep .pr-cat .ic{background:var(--primary-soft);width:42px;height:42px;color:var(--primary);border-radius:11px;justify-content:center;align-items:center;margin:0 auto 8px;font-size:19px;font-weight:800;display:flex}.prep .pr-grid{grid-template-columns:repeat(auto-fill,minmax(250px,1fr));gap:14px;display:grid}.prep .pr-card{background:var(--surface);border:1px solid var(--border);border-radius:var(--radius);box-shadow:var(--shadow-sm);flex-direction:column;gap:8px;padding:16px;text-decoration:none;transition:border-color .15s,transform .15s;display:flex}.prep .pr-card:hover{border-color:var(--primary);transform:translateY(-1px)}.prep .pr-card h3{letter-spacing:-.01em;color:var(--text);margin:0;font-size:15.5px;line-height:1.3}.prep .pr-card p{color:var(--text-muted);margin:0;font-size:13px}.prep .pr-tags{flex-wrap:wrap;gap:5px;display:flex}.prep .pr-tag{letter-spacing:.04em;text-transform:uppercase;background:var(--surface-2);color:var(--text-muted);border-radius:5px;padding:2.5px 7px;font-size:10.5px;font-weight:700}.prep .pr-tag--focus{background:var(--primary-fill);color:#fff}.prep .pr-tag--prov{background:var(--success-soft);color:var(--success)}.prep .pr-meta{color:var(--text-muted);font-variant-numeric:tabular-nums;gap:12px;margin-top:auto;font-size:12.5px;display:flex}.prep .pr-chips{flex-wrap:wrap;gap:8px;margin:0 0 16px;display:flex}.prep .pr-chip{border:1px solid var(--border);background:var(--surface);color:var(--text-muted);border-radius:999px;padding:6px 14px;font-size:13px;font-weight:600;text-decoration:none}.prep .pr-chip[aria-current=true]{background:var(--primary-fill);border-color:var(--primary);color:#fff}.prep .pr-chip:hover{border-color:var(--primary);color:var(--primary)}.prep .pr-chip[aria-current=true]:hover{color:#fff}.prep .pr-btn{background:var(--primary-fill);color:#fff;border-radius:var(--radius-sm);cursor:pointer;border:0;padding:10px 20px;font-size:14.5px;font-weight:650;text-decoration:none;display:inline-block}.prep .pr-btn:hover{background:var(--primary-hover)}.prep .pr-btn:disabled{opacity:.55;cursor:default}.prep .pr-btn--ghost{color:var(--text);border:1px solid var(--border);background:0 0}.prep .pr-btn--ghost:hover{background:var(--surface-2)}.prep .pr-field{flex-direction:column;gap:6px;display:flex}.prep .pr-field label{color:var(--text-muted);font-size:12.5px;font-weight:650}.prep .pr-field input,.prep .pr-field select{background:var(--surface);color:var(--text);border:1px solid var(--border);border-radius:var(--radius-sm);padding:9px 12px;font-size:14px}.prep .pr-field input:focus-visible,.prep .pr-field select:focus-visible,.prep .pr-btn:focus-visible,.prep .pr-option:focus-visible,.prep .pr-chip:focus-visible{outline:2px solid var(--primary);outline-offset:2px}.prep .pr-error{color:var(--danger);margin:0;font-size:14px}.prep .pr-panel h1{letter-spacing:-.02em;margin:0;font-size:24px;line-height:1.2}.prep .pr-panel h1 .accent{color:var(--primary)}.prep .pr-panel .sub{color:var(--text-muted);margin:0;font-size:14px}.prep .pr-google{background:var(--surface);border:1px solid var(--border-strong,var(--border));border-radius:var(--radius-sm);color:var(--text);cursor:pointer;justify-content:center;align-items:center;gap:10px;padding:11px 16px;font-size:15px;font-weight:600;display:flex}.prep .pr-google:hover{border-color:var(--text-muted)}.prep .pr-panel .fine{color:var(--text-muted);margin:0;font-size:12px}.prep .pr-stats{grid-template-columns:repeat(auto-fit,minmax(130px,1fr));gap:12px;margin:4px 0 20px;display:grid}.prep .pr-stat{background:var(--surface);border:1px solid var(--border);border-radius:var(--radius);padding:14px 16px}.prep .pr-stat .n{letter-spacing:-.02em;font-variant-numeric:tabular-nums;color:var(--text);font-size:24px;font-weight:800}.prep .pr-stat .l{color:var(--text-muted);text-transform:uppercase;letter-spacing:.06em;font-size:11.5px;font-weight:700}.prep .pr-focus-form{background:var(--surface);border:1px solid var(--border);border-radius:var(--radius);flex-wrap:wrap;align-items:flex-end;gap:12px;padding:16px;display:flex}.prep table.pr-table{border-collapse:collapse;background:var(--surface);border:1px solid var(--border);border-radius:var(--radius);width:100%;font-size:13.5px;overflow:hidden}.prep .pr-table th{text-align:left;text-transform:uppercase;letter-spacing:.07em;color:var(--text-muted);background:var(--surface-2);padding:9px 14px;font-size:11px}.prep .pr-table td{border-top:1px solid var(--border);font-variant-numeric:tabular-nums;padding:10px 14px}.prep .pr-scroll{overflow-x:auto}.prep .pr-question{background:var(--surface);border:1px solid var(--border);border-radius:var(--radius);margin:0 0 14px;padding:20px}.prep .pr-question .q{color:var(--text);margin:0 0 12px;font-size:16px;font-weight:650}.prep .pr-question img{border-radius:var(--radius-sm);max-width:100%;margin-bottom:12px}.prep .pr-options{flex-direction:column;gap:8px;display:flex}.prep .pr-option{text-align:left;background:var(--surface-2);border:1px solid var(--border);border-radius:var(--radius-sm);color:var(--text);cursor:pointer;padding:10px 14px;font-size:14.5px}.prep .pr-option[aria-pressed=true]{border-color:var(--primary);background:var(--primary-soft);box-shadow:inset 0 0 0 1px var(--primary)}.prep .pr-runner-top{justify-content:space-between;align-items:center;gap:12px;margin:22px 0 14px;display:flex}.prep .pr-timer{font-variant-numeric:tabular-nums;color:var(--text);font-size:17px;font-weight:800}.prep .pr-timer--low{color:var(--danger)}.prep .pr-review-line{flex-wrap:wrap;align-items:baseline;gap:8px;margin-top:8px;font-size:14px;display:flex}.prep .pr-correct{color:var(--success);font-weight:700}.prep .pr-wrong{color:var(--danger);font-weight:700}.prep .pr-ungraded{color:var(--text-muted);font-weight:700}.prep .pr-figure{margin:12px 0}.prep .pr-figure img{border:1px solid var(--border);border-radius:var(--radius-sm);max-width:100%;height:auto;display:block}.prep .pr-figure figcaption{color:var(--text-muted);margin-top:6px;font-size:12.5px}.prep .pr-figure--solution{margin-top:14px}.prep .pr-figure--solution img{background:#fff;padding:6px}.prep .pr-written{background:var(--surface-2);border:1px solid var(--border);border-radius:var(--radius-sm);width:100%;font:inherit;color:var(--text);resize:vertical;padding:10px 12px;font-size:14.5px}.prep .pr-written:focus-visible{outline:2px solid var(--primary);outline-offset:1px}.prep .pr-explain{color:var(--text-muted);background:var(--surface-2);border-radius:var(--radius-sm);margin-top:10px;padding:10px 12px;font-size:13.5px}.prep .pr-h2{letter-spacing:-.015em;margin:24px 0 6px;font-size:20px}.prep .pr-sub{color:var(--text-muted);margin:0 0 14px;font-size:13.5px}.prep .pr-signout{align-items:center;gap:6px;display:inline-flex}@media (max-width:720px){.prep .pr-signout-label{display:none}.prep .pr-signout{padding-left:10px;padding-right:10px}}.prep .pr-side-foot{border-top:1px solid var(--border);margin-top:14px;padding-top:12px}.prep .pr-side-btn--signout{color:var(--text-muted);width:100%}.prep .pr-side-btn--signout:hover{color:var(--danger);background:var(--danger-soft)}.prep .pr-stat-grid{grid-template-columns:repeat(auto-fit,minmax(130px,1fr));gap:10px;margin-bottom:20px;display:grid}.prep .pr-stat{background:var(--surface);border:1px solid var(--border);border-radius:var(--radius-sm);text-align:center;padding:14px}.prep .pr-stat strong{letter-spacing:-.02em;font-size:22px;display:block}.prep .pr-stat span{color:var(--text-muted);font-size:12px}.prep .pr-bars{flex-direction:column;gap:8px;margin-bottom:8px;display:flex}.prep .pr-bar-row{grid-template-columns:minmax(110px,200px) 1fr auto;align-items:center;gap:10px;display:grid}.prep .pr-bar-row .lbl{font-size:13.5px;font-weight:600}.prep .pr-bar-row .lbl em{color:var(--text-muted);font-size:12px;font-style:normal;font-weight:400}.prep .pr-bar-row .bar{background:var(--surface-2);border-radius:999px;height:8px;overflow:hidden}.prep .pr-bar-row .bar span{background:var(--primary-fill);border-radius:999px;height:100%;display:block}.prep .pr-bar-row .val{color:var(--text-muted);white-space:nowrap;font-variant-numeric:tabular-nums;font-size:12.5px}.prep .pr-plan{grid-template-columns:repeat(auto-fit,minmax(140px,1fr));gap:8px;margin-bottom:8px;display:grid}.prep .pr-plan-day{background:var(--surface);border:1px solid var(--border);border-radius:var(--radius-sm);padding:10px 12px}.prep .pr-plan-day strong{color:var(--text-muted);font-size:12.5px;display:block}.prep .pr-plan-day span{margin:2px 0;font-size:14px;font-weight:700;display:block}.prep .pr-plan-day 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var(--border);border-left:3px solid var(--warning,#b58a2a);border-radius:var(--radius-sm);color:var(--text-muted);margin:0 0 10px;padding:8px 12px;font-size:13px}.prep .pr-section-head{letter-spacing:-.01em;border-bottom:1px solid var(--border);margin:18px 0 8px;padding-bottom:4px;font-size:15px}.prep .pr-section-note{color:var(--text-muted);margin:-4px 0 10px;font-size:13px;font-style:italic}.prep .pr-marks{color:var(--text-muted);font-size:12px;font-weight:600}.prep .pr-builder{background:var(--surface);border:1px solid var(--border);border-radius:var(--radius-sm);padding:16px}.prep .pr-builder-grid{grid-template-columns:repeat(auto-fit,minmax(170px,1fr));gap:12px;margin-bottom:14px;display:grid}.prep .pr-builder label span{color:var(--text-muted);margin-bottom:4px;font-size:12.5px;font-weight:600;display:block}.prep .pr-builder select{background:var(--surface-2);border:1px solid var(--border);border-radius:var(--radius-sm);width:100%;font:inherit;color:var(--text);padding:8px 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