:root{color-scheme:light dark;--bg: #f6f7f4;--surface: #ffffff;--surface-2: #edf3f1;--ink: #16201c;--muted: #63706a;--line: #d8ded9;--brand: #0f766e;--brand-dark: #115e59;--brand-contrast: #ffffff;--accent: #b45309;--danger: #b42318;--success: #137333;--selected-bg: #ecfdf5;--correct-bg: #ecfdf3;--wrong-bg: #fff1f0;--danger-border: #ffd0ca;--pass-border: #a7f3d0;--focus-ring: rgba(15, 118, 110, .55);--actions-fade: rgba(246, 247, 244, 0);--shadow: 0 18px 45px rgba(27, 35, 31, .12)}@media(prefers-color-scheme:dark){:root{--bg: #0b0f0d;--surface: #141a18;--surface-2: #1c2421;--ink: #e6ecea;--muted: #94a8a1;--line: #2a3431;--brand: #2dd4bf;--brand-dark: #14b8a6;--brand-contrast: #04201c;--accent: #fbbf24;--danger: #f87171;--success: #34d399;--selected-bg: #0d2a23;--correct-bg: #07291c;--wrong-bg: #2a1010;--danger-border: #5b1f1f;--pass-border: #064e3b;--focus-ring: rgba(45, 212, 191, .65);--actions-fade: rgba(11, 15, 13, 0);--shadow: 0 18px 45px rgba(0, 0, 0, .55)}}*{box-sizing:border-box}body{margin:0;min-height:100vh;min-height:100dvh;background:var(--bg);color:var(--ink);font-family:Inter,Noto Sans Devanagari,ui-sans-serif,system-ui,-apple-system,BlinkMacSystemFont,Segoe UI,sans-serif;line-height:1.5;overscroll-behavior-y:contain}.skip-link{position:fixed;top:10px;left:10px;z-index:100;transform:translateY(-160%);padding:10px 14px;border-radius:8px;background:var(--brand);color:var(--brand-contrast);font-weight:900;text-decoration:none}.skip-link:focus{transform:translateY(0)}button,input,select{font:inherit}button{min-height:44px}button,.tab,.option,.exam-nav-button,.meta-action{transition:background-color .18s ease,border-color .18s ease,color .18s ease,box-shadow .18s ease}button:focus-visible,.tab:focus-visible,.option:focus-visible,.exam-nav-button:focus-visible,.meta-action:focus-visible,.skip-link:focus-visible{outline:3px solid var(--focus-ring);outline-offset:3px}.app-shell{width:min(100%,1120px);margin:0 auto;padding:12px 14px 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span{display:block;height:100%;border-radius:inherit;background:var(--brand)}.panel{display:none}.panel.is-active{display:block}.practice-main{min-width:0}.category-scroll{display:flex;gap:8px;margin:0 0 12px;overflow-x:auto;padding:2px 2px 8px;scroll-snap-type:x proximity;scrollbar-width:none;-webkit-overflow-scrolling:touch}.category-scroll::-webkit-scrollbar{display:none}.category-chip{display:inline-flex;flex:0 0 auto;align-items:center;gap:8px;min-height:42px;padding:0 12px;border:1px solid var(--line);border-radius:999px;background:var(--surface);color:var(--muted);font-weight:850;cursor:pointer;scroll-snap-align:start}.category-chip strong{display:inline-grid;min-width:28px;height:28px;place-items:center;border-radius:999px;background:var(--surface-2);color:var(--brand-dark);font-size:.78rem}.category-chip.is-active{border-color:var(--brand);background:var(--brand);color:var(--brand-contrast)}.category-chip.is-active 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.fill{stroke:var(--success)}.result-banner.fail .score-ring .fill{stroke:var(--danger)}.score-ring .score-text{position:absolute;inset:0;display:grid;place-items:center;font-weight:900;font-size:1.1rem;color:var(--ink)}.score-ring.small{width:64px;height:64px;flex-basis:64px}.score-ring.small .track,.score-ring.small .fill{stroke-width:6}.score-ring.small .score-text{font-size:.85rem}.result-banner.pass{border-color:var(--pass-border);background:var(--correct-bg)}.result-banner.fail{border-color:var(--danger-border);background:var(--wrong-bg)}.stats-grid{display:grid;grid-template-columns:repeat(2,minmax(0,1fr));gap:10px;margin:16px 0}.stat{padding:14px;border:1px solid var(--line);border-radius:8px;background:var(--surface-2)}.stat strong{display:block;font-size:1.4rem;line-height:1.1}.stat 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minmax(220px,280px);align-items:start}.exam-progress-panel{position:sticky;top:88px;margin-top:0}.exam-progress-panel>summary{cursor:default;pointer-events:none}.exam-progress-panel>summary:after{display:none}.exam-progress-panel>.exam-question-nav{display:grid;grid-template-columns:repeat(5,minmax(0,1fr));overflow:visible;-webkit-mask-image:none;mask-image:none}.sign-image img{width:min(190px,30vw);max-height:190px}.exam-nav-button{flex-basis:auto}}@media(min-width:1120px){.prompt{font-size:1.62rem}}@media(prefers-reduced-motion:reduce){*,*:before,*:after{scroll-behavior:auto!important;transition-duration:.01ms!important;animation-duration:.01ms!important;animation-iteration-count:1!important}}