:root{--bg:#ffffff;--fg:#000000;--muted:#4a4a4a;--border:rgba(0,0,0,0.12);--header-h:56px;--content-max:720px;--base-font-size:16px;--row-gap:14px;color-scheme:light dark}[data-theme=dark]{--bg:#000000;--fg:#ffffff;--muted:#b0b0b0;--border:rgba(255,255,255,0.16)}[data-theme=light]{--bg:#ffffff;--fg:#000000;--muted:#4a4a4a;--border:rgba(0,0,0,0.12)}@media (prefers-color-scheme:dark){:root:not([data-theme]){--bg:#000000;--fg:#ffffff;--muted:#b0b0b0;--border:rgba(255,255,255,0.16)}}[data-density=compact]{--row-gap:8px}[data-density=comfortable]{--row-gap:14px}*{box-sizing:border-box}body,html{margin:0;padding:0;background:var(--bg);color:var(--fg);font-family:system-ui,-apple-system,Segoe UI,Roboto,sans-serif;font-size:var(--base-font-size,16px);line-height:1.5;min-height:100vh;-webkit-font-smoothing:antialiased}a{color:inherit;text-decoration:none}a:hover{text-decoration:underline}button{font:inherit;background:transparent;color:inherit;border:1px solid var(--border);border-radius:6px;padding:8px 12px;cursor:pointer}button:hover{background:var(--fg);color:var(--bg)}button:disabled{opacity:.4;cursor:not-allowed}button:disabled:hover{background:transparent;color:inherit}input[type=email],input[type=password],input[type=search],input[type=text],select,textarea{font:inherit;background:transparent;color:inherit;border:1px solid var(--border);border-radius:6px;padding:10px 12px;width:100%}input:focus,select:focus,textarea:focus{outline:2px solid var(--fg);outline-offset:1px}label{display:block;font-size:13px;margin-bottom:4px;color:var(--muted)}.shelf-row{display:flex;gap:12px;overflow-x:auto;padding:4px 16px 16px;scroll-snap-type:x mandatory;-webkit-overflow-scrolling:touch}.shelf-row>*{scroll-snap-align:start}.shelf-head{display:flex;align-items:baseline;justify-content:space-between;padding:0 16px;margin-bottom:12px}.shelf-head h2{margin:0;font-size:16px;font-weight:600}.shelf-head-sub{font-size:12px;color:var(--muted);margin-top:2px}.shelf-see-all{font-size:13px;color:var(--muted);text-decoration:none}.shelf-card{flex:0 0 124px;width:124px;min-width:124px;max-width:124px;min-height:172px;border:1px solid color-mix(in srgb,var(--tone,#6b7280) 20%,var(--border));border-radius:8px;padding:9px;text-decoration:none;color:inherit;flex-direction:column;gap:7px;background:linear-gradient(180deg,var(--tone-bg,rgba(107,114,128,.15)),transparent 58%),var(--bg);contain:layout}.shelf-card,.shelf-card-media{display:flex;position:relative}.shelf-card-media{width:100%;max-width:100%;height:66px;border-radius:7px;align-items:center;justify-content:center;background:color-mix(in srgb,var(--tone,#6b7280) 8%,transparent);overflow:hidden;contain:paint}.shelf-card-media img{max-width:100%;max-height:100%}.shelf-card-title{min-height:34px;font-size:12px;line-height:1.2;font-weight:600;text-align:center}.shelf-card-title span{display:-webkit-box;-webkit-line-clamp:2;-webkit-box-orient:vertical;overflow:hidden}.shelf-card-meta{margin-top:auto;display:grid;grid-gap:4px;gap:4px;color:var(--muted)}.shelf-card-type{font-size:10px;text-align:center;line-height:1.1;overflow:hidden;text-overflow:ellipsis;white-space:nowrap}.shelf-card-stats{display:flex;justify-content:center;gap:7px;align-items:center;font-size:10px;line-height:1}.shelf-card-stats>span{display:inline-flex;align-items:center;gap:2px;min-width:0}.shelf-card-stats svg{flex:0 0 auto}.doc-tone-icon{display:inline-flex;align-items:center;justify-content:center;color:var(--tone,#6b7280);background:var(--tone-bg,rgba(107,114,128,.15));border:1px solid color-mix(in srgb,var(--tone,#6b7280) 28%,var(--border))}.doc-list{display:grid;grid-template-columns:minmax(0,1fr);grid-gap:10px;gap:10px}@media (min-width:720px){.doc-list{grid-template-columns:repeat(2,minmax(0,1fr))}}.doc-list-card{display:flex;align-items:flex-start;gap:12px;min-height:84px;padding:12px;border:1px solid var(--border);border-radius:10px;overflow:hidden;color:inherit;text-decoration:none;background:var(--bg);line-height:normal}.doc-list-card:hover{text-decoration:none;border-color:color-mix(in srgb,var(--fg) 35%,var(--border))}.doc-list-card-body{flex:1 1;min-width:0;word-break:break-word;overflow-wrap:break-word}.doc-list-card-title{font-size:15px;font-weight:600;line-height:1.3}.doc-list-card-desc,.doc-list-card-title{display:-webkit-box;-webkit-line-clamp:2;line-clamp:2;-webkit-box-orient:vertical;overflow:hidden}.doc-list-card-desc{margin-top:4px;font-size:12.5px;line-height:1.45;color:var(--muted)}@media (max-width:359px){.doc-list-card-desc{display:none}}.doc-list-card-meta{display:flex;flex-wrap:wrap;gap:6px;margin-top:8px;font-size:11px;color:var(--muted)}.doc-list-card-tag{border:1px solid var(--border);border-radius:4px;padding:1px 6px;white-space:nowrap}[data-reader-theme=sepia]{background:#f6ecd8;color:#3b2c1b}[data-reader-theme=black]{background:#000;color:#eaeaea}[data-reader-theme=white]{background:#ffffff;color:#000000}.blog-body h1,.blog-body h2,.blog-body h3,.blog-body h4{margin:1.6em 0 .6em;font-weight:600;line-height:1.25}.blog-body h1{font-size:1.6em}.blog-body h2{font-size:1.35em}.blog-body h3{font-size:1.15em}.blog-body h4{font-size:1em}.blog-body p{margin:0 0 1em}.blog-body ol,.blog-body ul{margin:0 0 1em;padding-left:1.5em}.blog-body li{margin:.3em 0}.blog-body blockquote{margin:1em 0;padding:.6em 1em;border-left:3px solid var(--border);color:var(--muted);font-style:italic}.blog-body code{font-family:ui-monospace,SFMono-Regular,Menlo,monospace;font-size:.9em;background:var(--fg);color:var(--bg);padding:1px 5px;border-radius:3px}.blog-body pre{margin:1em 0;padding:12px 14px;border:1px solid var(--border);border-radius:6px;overflow-x:auto;background:transparent}.blog-body pre code{background:transparent;color:inherit;padding:0;font-size:.85em;line-height:1.5}.blog-body figure img,.blog-body img{max-width:100%;height:auto;border-radius:6px;margin:.8em 0}.blog-body a{text-decoration:underline}.blog-body hr{border:none;border-top:1px solid var(--border);margin:2em 0}.blog-body table{border-collapse:collapse;width:100%;margin:1em 0;font-size:.9em}.blog-body td,.blog-body th{border:1px solid var(--border);padding:6px 10px;text-align:left}.blog-body th{background:rgba(0,0,0,.03)}[data-theme=dark] .blog-body th{background:rgba(255,255,255,.06)}:root{--accent:var(--fg);--btn-accent:var(--accent);--card-bg:var(--bg)}[data-preset=blue]{--accent:#1d4ed8;--btn-accent:#1d4ed8}[data-preset=red]{--accent:#b91c1c;--btn-accent:#b91c1c}[data-preset=green]{--accent:#15803d;--btn-accent:#15803d}[data-preset=purple]{--accent:#6d28d9;--btn-accent:#6d28d9}[data-theme=dark][data-preset=blue]{--accent:#60a5fa;--btn-accent:#60a5fa}[data-theme=dark][data-preset=red]{--accent:#f87171;--btn-accent:#f87171}[data-theme=dark][data-preset=green]{--accent:#4ade80;--btn-accent:#4ade80}[data-theme=dark][data-preset=purple]{--accent:#a78bfa;--btn-accent:#a78bfa}[data-compact=true]{--row-gap:8px}[data-compact=true] body{line-height:1.4}:root:not([data-preset=default]) button:not([data-plain]){border-color:color-mix(in srgb,var(--btn-accent) 55%,var(--border))}:root:not([data-preset=default]) button:not([data-plain]):hover{background:var(--btn-accent);color:#ffffff;border-color:var(--btn-accent)}:root:not([data-preset=default]) a:hover{color:var(--accent)}:root:not([data-preset=default]) input:focus,:root:not([data-preset=default]) select:focus,:root:not([data-preset=default]) textarea:focus{outline-color:var(--accent)}:root:not([data-preset=default]) .doc-list-card{background:var(--card-bg)}:focus-visible{outline:2px solid var(--accent);outline-offset:2px}.surface-card{border:1px solid var(--border);border-radius:10px;padding:14px;background:var(--card-bg,var(--bg));display:grid;grid-gap:var(--row-gap);gap:var(--row-gap)}.badge{display:inline-block;border:1px solid var(--border);border-radius:999px;padding:1px 9px;font-size:11.5px;color:var(--muted);white-space:nowrap}.badge[data-tone=open]{color:var(--accent);border-color:currentColor}.badge[data-tone=pending]{color:#b45309;border-color:currentColor}.badge[data-tone=resolved]{color:#15803d;border-color:currentColor}.badge[data-tone=closed]{color:var(--muted)}[data-theme=dark] .badge[data-tone=pending]{color:#fbbf24}[data-theme=dark] .badge[data-tone=resolved]{color:#4ade80}.maths-scope{--maths-accent:#1d4ed8;--maths-soft:rgba(29,78,216,0.09)}[data-maths-theme=red] .maths-scope{--maths-accent:#b91c1c;--maths-soft:rgba(185,28,28,0.09)}[data-maths-theme=green] .maths-scope{--maths-accent:#15803d;--maths-soft:rgba(21,128,61,0.09)}[data-maths-theme=purple] .maths-scope{--maths-accent:#6d28d9;--maths-soft:rgba(109,40,217,0.09)}[data-theme=dark] .maths-scope{--maths-accent:#60a5fa;--maths-soft:rgba(96,165,250,0.14)}[data-theme=dark][data-maths-theme=red] .maths-scope{--maths-accent:#f87171;--maths-soft:rgba(248,113,113,0.14)}[data-theme=dark][data-maths-theme=green] .maths-scope{--maths-accent:#4ade80;--maths-soft:rgba(74,222,128,0.14)}[data-theme=dark][data-maths-theme=purple] .maths-scope{--maths-accent:#a78bfa;--maths-soft:rgba(167,139,250,0.14)}.maths-scope .maths-panel{border:1px solid color-mix(in srgb,var(--maths-accent) 35%,var(--border));border-radius:10px;padding:14px;background:var(--maths-soft)}.maths-scope button[data-maths-primary]{background:var(--maths-accent);border-color:var(--maths-accent);color:#ffffff}.maths-scope button[data-maths-primary]:hover{filter:brightness(1.1);background:var(--maths-accent);color:#ffffff}.maths-scope h1,.maths-scope h2{color:var(--maths-accent)}.maths-tools-toggle{display:inline-flex;align-items:center;gap:8px;padding:10px 16px;font-size:14px;font-weight:600;border:1px solid var(--maths-accent);border-radius:8px;background:var(--maths-accent);color:#fff;cursor:pointer}.maths-tools-toggle:hover{filter:brightness(1.08)}.maths-tools-tabs{display:flex;gap:6px;flex-wrap:wrap}.maths-tab{padding:8px 14px;font-size:13px;font-weight:600;border:1px solid var(--border);border-radius:999px;background:transparent;color:var(--muted);cursor:pointer}.maths-tab-on{background:var(--maths-accent);border-color:var(--maths-accent);color:#fff}.calc{display:flex;flex-direction:column;gap:10px;max-width:460px;margin:0 auto}.calc-display{border:1px solid var(--border);border-radius:10px;background:var(--bg);padding:10px 12px}.calc-input{width:100%;border:none;background:transparent;color:var(--fg);font-size:26px;font-weight:600;padding:2px 0;outline:none}.calc-input,.calc-preview{text-align:right;font-family:ui-monospace,SFMono-Regular,Menlo,monospace}.calc-preview{min-height:20px;font-size:14px;color:var(--muted);overflow-x:auto;white-space:nowrap}.calc-error{color:var(--danger,#b91c1c)}.calc-toolbar{display:flex;justify-content:space-between;align-items:center;gap:8px;flex-wrap:wrap}.calc-mem,.calc-mode{display:flex;gap:6px;align-items:center}.calc-chip{padding:5px 10px;font-size:12px;font-weight:600;border:1px solid var(--border);border-radius:6px;background:transparent;color:var(--muted);cursor:pointer}.calc-chip:disabled{opacity:.45;cursor:default}.calc-chip-on{background:var(--maths-accent);border-color:var(--maths-accent);color:#fff}.calc-mem-flag{font-size:11px;font-weight:700;color:var(--maths-accent)}.calc-grid{display:grid;grid-gap:6px;gap:6px}.calc-sci{grid-template-columns:repeat(5,1fr)}.calc-pad{grid-template-columns:repeat(4,1fr)}.calc-btn{padding:12px 0;font-size:16px;border:1px solid var(--border);border-radius:8px;background:var(--bg);color:var(--fg);cursor:pointer;-webkit-user-select:none;-moz-user-select:none;user-select:none;min-height:44px;transition:filter .08s ease}.calc-btn:hover{filter:brightness(.96)}.calc-btn:active{filter:brightness(.9)}.calc-btn:disabled{opacity:.4;cursor:default}.calc-fn{font-size:13px;background:var(--maths-soft)}.calc-op{font-weight:700;color:var(--maths-accent)}.calc-clear{color:var(--danger,#b91c1c);font-weight:600}.calc-equals{background:var(--maths-accent);border-color:var(--maths-accent);color:#fff;font-weight:700}.calc-equals:hover{filter:brightness(1.08)}.calc-target{display:flex;align-items:center;justify-content:space-between;gap:8px;flex-wrap:wrap;border:1px solid var(--border);border-radius:8px;padding:8px 10px;background:var(--maths-soft)}.calc-target-label{font-size:12px;font-weight:600;color:var(--muted)}.calc-target-btns{display:flex;gap:6px}.calc-direct-note{margin:0;font-size:12px;color:var(--maths-accent);font-weight:600;text-align:center}.calc-actions{display:flex;gap:8px;flex-wrap:wrap}.calc-insert{flex:1 1;min-width:130px;padding:10px 14px;font-size:13px;font-weight:600;border:1px solid var(--maths-accent);border-radius:8px;background:transparent;color:var(--maths-accent);cursor:pointer}.calc-insert:hover{background:var(--maths-soft)}.calc-insert:disabled{opacity:.45;cursor:default}.calc-insert-strong{background:var(--maths-accent);border-color:var(--maths-accent);color:#fff}.calc-insert-strong:hover{filter:brightness(1.08);background:var(--maths-accent)}.calc-history{border-top:1px solid var(--border);padding-top:10px}.calc-history-head{display:flex;justify-content:space-between;align-items:center;font-size:12px;font-weight:600;color:var(--muted);margin-bottom:6px}.calc-history-clear{border:none;background:transparent;color:var(--maths-accent);font-size:12px;cursor:pointer;padding:0}.calc-history-empty{font-size:13px;color:var(--muted);margin:0}.calc-history-list{list-style:none;margin:0;padding:0;max-height:180px;overflow-y:auto}.calc-history-item{width:100%;display:flex;justify-content:space-between;gap:12px;align-items:baseline;padding:7px 8px;border:none;background:transparent;color:inherit;border-radius:6px;cursor:pointer;text-align:left;font-family:ui-monospace,SFMono-Regular,Menlo,monospace;font-size:13px}.calc-history-item:hover{background:var(--maths-soft)}.calc-history-expr{color:var(--muted);overflow:hidden;text-overflow:ellipsis;white-space:nowrap}.calc-history-result{font-weight:600;white-space:nowrap}.uc{gap:12px;max-width:520px;margin:0 auto}.uc,.uc-field{display:flex;flex-direction:column}.uc-field{gap:4px}.uc-grow{flex:1 1;min-width:0}.uc-label{font-size:12px;font-weight:600;color:var(--muted)}.uc-row{display:flex;gap:10px;flex-wrap:wrap}.uc-input,.uc-output,.uc-select{width:100%;padding:10px 12px;border:1px solid var(--border);border-radius:8px;background:var(--bg);color:var(--fg);font-size:15px}.uc-output{font-weight:700;font-family:ui-monospace,SFMono-Regular,Menlo,monospace;overflow-x:auto;white-space:nowrap;min-height:42px;display:flex;align-items:center}.uc-swap-row{display:flex;justify-content:center}.uc-swap{padding:6px 14px;font-size:13px;font-weight:600;border:1px solid var(--border);border-radius:999px;background:transparent;color:var(--maths-accent);cursor:pointer}.uc-swap:hover{background:var(--maths-soft)}.uc-summary{font-size:14px;margin:0;color:var(--fg)}@media (max-width:420px){.calc-input{font-size:22px}.calc-btn{font-size:15px;padding:10px 0}.calc-fn{font-size:12px}}.recovery-chip{display:inline-block;padding:7px 12px;font-size:13px;border:1px solid var(--border);border-radius:999px;background:var(--bg);color:var(--fg);text-decoration:none;transition:border-color .1s ease,background .1s ease}.recovery-chip:hover{border-color:var(--fg);background:color-mix(in srgb,var(--fg) 5%,var(--bg))}.recovery-chip-strong{font-weight:600}.trending-row{display:flex;gap:8px;flex-wrap:wrap;align-items:center}.trending-chip{display:inline-flex;align-items:baseline;gap:6px;padding:6px 12px;font-size:13px;border:1px solid var(--border);border-radius:999px;background:var(--bg);color:var(--fg);text-decoration:none}.trending-chip:hover{border-color:var(--fg)}.trending-chip-count{font-size:11px;color:var(--muted)}.collection-card{display:block;border:1px solid var(--border);border-radius:10px;padding:12px;background:var(--bg);color:var(--fg);text-decoration:none;transition:border-color .1s ease}.collection-card:hover{border-color:var(--fg)}.acct-grid{display:grid;grid-gap:10px;gap:10px;grid-template-columns:repeat(auto-fill,minmax(230px,1fr))}.acct-card{display:flex;align-items:center;gap:12px;padding:12px 14px;border:1px solid var(--border);border-radius:10px;background:var(--bg);color:var(--fg);text-decoration:none;transition:border-color .1s ease,background .1s ease}.acct-card:hover{border-color:var(--fg);background:color-mix(in srgb,var(--fg) 4%,var(--bg))}.acct-card-icon{display:inline-flex;align-items:center;justify-content:center;width:38px;height:38px;flex-shrink:0;border-radius:8px;background:color-mix(in srgb,var(--fg) 7%,var(--bg));color:var(--fg)}.acct-card-text{display:flex;flex-direction:column;gap:2px;min-width:0}.acct-card-label{font-size:14px;font-weight:600}.acct-card-desc{font-size:12px;color:var(--muted);line-height:1.35}.acct-card-chevron{margin-left:auto;color:var(--muted);font-size:20px;line-height:1}:root{--sidebar-w:224px}html[data-sidebar=collapsed]{--sidebar-w:60px}.topbar{position:fixed;top:0;left:0;right:0;height:var(--header-h);display:flex;align-items:center;gap:10px;padding:0 12px;background:var(--bg);border-bottom:1px solid var(--border);z-index:20}.topbar-logo{display:inline-flex;align-items:center;gap:8px;font-weight:600;letter-spacing:.02em;text-decoration:none;color:inherit;font-size:15px}.topbar-actions{margin-left:auto;display:flex;align-items:center;gap:6px}.topbar-btn{width:38px;height:38px;padding:0;border:none;border-radius:8px;background:transparent;color:inherit;display:inline-flex;align-items:center;justify-content:center;cursor:pointer;text-decoration:none}.topbar-btn:hover{background:var(--border)}.sidebar{position:fixed;top:var(--header-h);bottom:0;left:0;width:var(--sidebar-w);display:flex;flex-direction:column;background:var(--bg);border-right:1px solid var(--border);overflow-y:auto;overflow-x:hidden;z-index:15;transition:width .15s ease}@media (prefers-reduced-motion:reduce){.sidebar{transition:none}}.sidebar-nav{flex:1 1;padding:10px 8px}.side-group{list-style:none;margin:0 0 6px;padding:0;display:grid;grid-gap:2px;gap:2px}.side-group-title{margin:12px 10px 4px;font-size:11px;font-weight:600;text-transform:uppercase;letter-spacing:.06em;color:var(--muted);white-space:nowrap}html[data-sidebar=collapsed] .side-group-title{visibility:hidden;height:1px;margin:8px 0 4px;border-top:1px solid var(--border)}.side-collapse-btn,.side-link{display:flex;align-items:center;gap:10px;padding:8px 10px;border-radius:8px;color:inherit;text-decoration:none;font-size:14px;white-space:nowrap;position:relative}.side-collapse-btn{width:calc(100% - 16px);margin:8px;border:1px solid var(--border);background:transparent;cursor:pointer;font-family:inherit}.side-collapse-btn:hover,.side-link-active,.side-link:hover{background:var(--border)}.side-link-active{font-weight:600}.side-icon{flex:0 0 auto;display:inline-flex;color:inherit}.side-label{overflow:hidden;text-overflow:ellipsis}html[data-sidebar=collapsed] .side-label{display:none}html[data-sidebar=collapsed] .side-collapse-btn,html[data-sidebar=collapsed] .side-link{justify-content:center;padding:10px 0}@media (min-width:901px){html[data-sidebar=collapsed] .side-collapse-btn:hover:after,html[data-sidebar=collapsed] .side-link:focus-visible:after,html[data-sidebar=collapsed] .side-link:hover:after{content:attr(data-tip);position:absolute;left:calc(100% + 8px);top:50%;transform:translateY(-50%);background:var(--fg);color:var(--bg);font-size:12px;font-weight:500;padding:4px 8px;border-radius:6px;white-space:nowrap;z-index:40;pointer-events:none}}.app-shell{margin-left:var(--sidebar-w);transition:margin-left .15s ease}@media (prefers-reduced-motion:reduce){.app-shell{transition:none}}@media (max-width:900px){.sidebar{display:none}.app-shell{margin-left:0}}.drawer-root{position:fixed;inset:0;z-index:30}.drawer-overlay{position:absolute;inset:0;background:rgba(0,0,0,.45)}.drawer{position:absolute;top:0;bottom:0;left:0;width:min(280px,85vw);background:var(--bg);border-right:1px solid var(--border);overflow-y:auto;padding:0 8px 16px;animation:drawer-in .18s ease}@keyframes drawer-in{0%{transform:translateX(-100%)}to{transform:translateX(0)}}@media (prefers-reduced-motion:reduce){.drawer{animation:none}}.drawer-head{display:flex;align-items:center;justify-content:space-between;height:var(--header-h);padding:0 4px 0 10px;margin-bottom:4px;border-bottom:1px solid var(--border)}.drawer .side-label{display:inline}.drawer .side-link{justify-content:flex-start;padding:10px}.drawer .side-group-title{visibility:visible;height:auto;margin:12px 10px 4px;border-top:none}.skip-link{position:absolute;left:-9999px;top:0;z-index:50;background:var(--fg);color:var(--bg);padding:8px 14px;border-radius:0 0 8px 0;text-decoration:none;font-size:14px}.skip-link:focus{left:0}.quiz-scope{--quiz-accent:#0f766e;--quiz-soft:rgba(15,118,110,0.09)}[data-theme=dark] .quiz-scope{--quiz-accent:#2dd4bf;--quiz-soft:rgba(45,212,191,0.13)}.quiz-scope h1,.quiz-scope h2{color:var(--quiz-accent)}.quiz-panel{border:1px solid color-mix(in srgb,var(--quiz-accent) 35%,var(--border));border-radius:10px;padding:14px;background:var(--quiz-soft)}.quiz-card{display:block;border:1px solid var(--border);border-radius:10px;padding:14px;text-decoration:none;color:inherit;background:var(--bg)}.quiz-card:hover{border-color:var(--quiz-accent)}.quiz-card h3{margin:0 0 4px;font-size:15px}.quiz-card p{margin:0;color:var(--muted);font-size:13px}.quiz-grid{display:grid;grid-template-columns:repeat(auto-fill,minmax(220px,1fr));grid-gap:10px;gap:10px}.quiz-btn{display:inline-flex;align-items:center;justify-content:center;gap:6px;padding:9px 16px;border-radius:8px;border:1px solid var(--border);background:transparent;color:inherit;font-size:14px;font-family:inherit;cursor:pointer;text-decoration:none}.quiz-btn:hover{background:var(--quiz-soft)}.quiz-btn[data-primary]{background:var(--quiz-accent);border-color:var(--quiz-accent);color:#ffffff}[data-theme=dark] .quiz-btn[data-primary]{color:#04211e}.quiz-btn[data-primary]:hover{filter:brightness(1.08)}.quiz-btn:disabled{opacity:.55;cursor:default}.quiz-choice{display:flex;align-items:flex-start;gap:10px;width:100%;text-align:left;padding:12px 14px;border:1px solid var(--border);border-radius:10px;background:var(--bg);color:inherit;font-size:15px;font-family:inherit;cursor:pointer}.quiz-choice:hover:not(:disabled){border-color:var(--quiz-accent);background:var(--quiz-soft)}.quiz-choice:disabled{cursor:default}.quiz-choice[data-picked=true]{border-color:var(--quiz-accent);border-width:2px;padding:11px 13px}.quiz-choice[data-result=correct]{border-color:#15803d;border-width:2px;padding:11px 13px;background:rgba(21,128,61,.08)}.quiz-choice[data-result=incorrect]{border-color:#b91c1c;border-width:2px;padding:11px 13px;background:rgba(185,28,28,.08)}[data-theme=dark] .quiz-choice[data-result=correct]{border-color:#4ade80;background:rgba(74,222,128,.12)}[data-theme=dark] .quiz-choice[data-result=incorrect]{border-color:#f87171;background:rgba(248,113,113,.12)}.quiz-feedback{margin-top:12px;padding:12px 14px;border-radius:10px;border:1px solid var(--border);font-size:14px}.quiz-feedback[data-kind=correct]{border-color:#15803d}.quiz-feedback[data-kind=incorrect]{border-color:#b91c1c}[data-theme=dark] .quiz-feedback[data-kind=correct]{border-color:#4ade80}[data-theme=dark] .quiz-feedback[data-kind=incorrect]{border-color:#f87171}.quiz-timer{font-feature-settings:"tnum";font-variant-numeric:tabular-nums;font-size:14px;padding:4px 10px;border:1px solid var(--border);border-radius:999px}.quiz-timer[data-warning=true]{border-color:#b45309;color:#b45309;font-weight:600}[data-theme=dark] .quiz-timer[data-warning=true]{border-color:#fbbf24;color:#fbbf24}.quiz-progress-track{height:6px;border-radius:999px;background:var(--border);overflow:hidden}.quiz-progress-fill{height:100%;border-radius:999px;background:var(--quiz-accent);transition:width .2s ease}@media (prefers-reduced-motion:reduce){.quiz-progress-fill{transition:none}}.quiz-input{width:100%;max-width:340px;padding:10px 12px;border:1px solid var(--border);border-radius:8px;background:var(--bg);color:inherit;font-size:15px;font-family:inherit}.quiz-input:focus{outline:2px solid var(--quiz-accent);outline-offset:1px}.quiz-table{width:100%;border-collapse:collapse;font-size:14px}.quiz-table td,.quiz-table th{text-align:left;padding:8px 10px;border-bottom:1px solid var(--border)}.quiz-table th{font-size:12px;text-transform:uppercase;letter-spacing:.04em;color:var(--muted)}.quiz-table tr[data-me=true] td{font-weight:600;background:var(--quiz-soft)}.quiz-pill{display:inline-flex;align-items:center;padding:2px 10px;border:1px solid var(--border);border-radius:999px;font-size:12px;color:var(--muted)}.quiz-seg{display:flex;flex-wrap:wrap;gap:6px}.quiz-seg button{padding:7px 14px;border-radius:999px;border:1px solid var(--border);background:transparent;color:inherit;font-size:13px;font-family:inherit;cursor:pointer}.quiz-seg button[aria-pressed=true]{background:var(--quiz-accent);border-color:var(--quiz-accent);color:#ffffff;font-weight:600}[data-theme=dark] .quiz-seg button[aria-pressed=true]{color:#04211e}.sr-only{position:absolute;width:1px;height:1px;padding:0;margin:-1px;overflow:hidden;clip:rect(0,0,0,0);white-space:nowrap;border:0}.home-section-cards{display:grid;grid-template-columns:repeat(auto-fit,minmax(220px,1fr));grid-gap:10px;gap:10px}.home-section-card{display:flex;flex-direction:column;gap:4px;border:1px solid var(--border);border-left:4px solid var(--tone,var(--border));border-radius:8px;padding:14px;text-decoration:none;color:inherit;background:var(--bg)}.home-section-card:hover{border-color:var(--tone,var(--fg))}.home-section-card:focus-visible{outline:2px solid var(--tone,var(--fg));outline-offset:2px}.home-section-card-title{font-size:16px;font-weight:600}.home-section-card-desc{color:var(--muted);font-size:13px}.home-section-card[data-tone=maths]{--tone:#1d4ed8}.home-section-card[data-tone=quiz]{--tone:#0f766e}.home-section-card[data-tone=games]{--tone:#b45309}[data-theme=dark] .home-section-card[data-tone=maths]{--tone:#60a5fa}[data-theme=dark] .home-section-card[data-tone=quiz]{--tone:#2dd4bf}[data-theme=dark] .home-section-card[data-tone=games]{--tone:#fbbf24}@keyframes spin{to{transform:rotate(1turn)}}.spinner{display:inline-block;border-radius:50%;border-style:solid;border-color:var(--border);border-top-color:var(--fg);animation:spin .7s linear infinite}@media (prefers-reduced-motion:reduce){.spinner{animation-duration:1.6s}}.launch-progress{position:fixed;top:0;left:0;right:0;height:3px;z-index:4000;pointer-events:none;transition:opacity .22s ease}.launch-progress-bar{height:100%;background:var(--fg);box-shadow:0 0 8px color-mix(in srgb,var(--fg) 60%,transparent);transition:width .2s ease}
/*# sourceMappingURL=759e659890a27911.css.map*/