:root{color-scheme:light dark;--bg: #f2f2f7;--bg-elevated: #ffffff;--bg-tertiary: #f2f2f7;--fill: rgba(120, 120, 128, .12);--fill-strong: rgba(120, 120, 128, .2);--label: #000000;--label-2: rgba(60, 60, 67, .72);--label-3: rgba(60, 60, 67, .55);--separator: rgba(60, 60, 67, .22);--tint: #5b3cc4;--tint-hover: #4c2fb0;--tint-soft: rgba(91, 60, 196, .11);--on-tint: #ffffff;--green: #1d8a3e;--green-soft: rgba(52, 199, 89, .15);--red: #c4271b;--red-soft: rgba(255, 59, 48, .12);--orange: #a35200;--orange-soft: rgba(255, 149, 0, .14);--blue: #0060df;--material: rgba(249, 249, 251, .78);--shadow: 0 1px 2px rgba(0, 0, 0, .04), 0 4px 18px rgba(0, 0, 0, .05);--radius: 14px;--radius-sm: 10px;--font: -apple-system, BlinkMacSystemFont, "SF Pro Text", "SF Pro Display", system-ui, "Segoe UI", Roboto, "Helvetica Neue", Arial, sans-serif;--font-serif: "New York", "Iowan Old Style", "Charter", "Georgia", "Times New Roman", serif;--mono: ui-monospace, "SF Mono", Menlo, Consolas, monospace;--sidebar-w: 268px;--tabbar-h: 58px;--safe-b: env(safe-area-inset-bottom, 0px);--safe-t: env(safe-area-inset-top, 0px)}@media(prefers-color-scheme:dark){:root{--bg: #000000;--bg-elevated: #1c1c1e;--bg-tertiary: #2c2c2e;--fill: rgba(120, 120, 128, .24);--fill-strong: rgba(120, 120, 128, .36);--label: #ffffff;--label-2: rgba(235, 235, 245, .72);--label-3: rgba(235, 235, 245, .52);--separator: rgba(84, 84, 88, .6);--tint: #a48bff;--tint-hover: #b8a4ff;--tint-soft: rgba(164, 139, 255, .16);--on-tint: #12052e;--green: #4cd877;--green-soft: rgba(48, 209, 88, .18);--red: #ff6b61;--red-soft: rgba(255, 69, 58, .18);--orange: #ffb340;--orange-soft: rgba(255, 159, 10, .18);--blue: #5aa9ff;--material: rgba(28, 28, 30, .76);--shadow: none}}@media(prefers-contrast:more){:root{--label-2: rgba(60, 60, 67, .9);--label-3: rgba(60, 60, 67, .8);--separator: rgba(60, 60, 67, 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var(--tint);margin:0 3px;color:var(--tint);font-weight:700;text-align:center}.q-context{color:var(--label-2);font-weight:400}.options{display:grid;gap:10px}.option{display:flex;align-items:flex-start;gap:12px;width:100%;min-height:52px;padding:12px 14px;border-radius:13px;border:1.5px solid var(--separator);background:var(--bg-elevated);text-align:left;cursor:pointer;font-size:17px;line-height:23px;transition:border-color .15s ease,background-color .15s ease}.option:hover:not([disabled]){border-color:var(--tint)}.option .letter{flex:none;width:28px;height:28px;border-radius:50%;display:grid;place-items:center;background:var(--fill);font-weight:700;font-size:14px}.option.correct{border-color:var(--green);background:var(--green-soft)}.option.correct .letter{background:var(--green);color:#fff}.option.wrong{border-color:var(--red);background:var(--red-soft)}.option.wrong 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button.answered{background:var(--tint-soft);color:var(--tint)}.qgrid button.current{outline:2px solid var(--tint)}.qgrid button.ok{background:var(--green-soft);color:var(--green)}.qgrid button.bad{background:var(--red-soft);color:var(--red)}.reader{display:grid;gap:24px}@media(min-width:1200px){.reader{grid-template-columns:300px minmax(0,1fr);align-items:start}.reader-toc{position:sticky;top:20px;max-height:calc(100dvh - 40px);overflow:auto}}.reader-toc ul{list-style:none;margin:0;padding:0}.reader-toc li a{display:block;padding:6px 10px;border-radius:8px;color:var(--label);font-size:14px;line-height:19px}.reader-toc li a:hover{background:var(--fill);text-decoration:none}.reader-toc li li a{padding-left:22px;color:var(--label-2)}.reader-toc li li li a{padding-left:34px}.act-text{font-family:var(--font-serif);font-size:18px;line-height:1.62}@media(min-width:900px){.act-text{font-size:17.5px}}.act-heading{font-family:var(--font);text-align:center;margin:34px 0 14px}.act-heading 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td:first-child{text-align:left}table.data thead th{font-size:12px;font-weight:600;color:var(--label-2);text-transform:uppercase;letter-spacing:.02em}table.data tfoot td{font-weight:700}.timeline{position:relative;margin:0;padding:0;list-style:none}.timeline li{position:relative;padding:0 0 18px 28px}.timeline li:before{content:"";position:absolute;left:7px;top:8px;bottom:-4px;width:2px;background:var(--separator)}.timeline li:last-child:before{display:none}.timeline li:after{content:"";position:absolute;left:2px;top:4px;width:12px;height:12px;border-radius:50%;background:var(--tint);box-shadow:0 0 0 3px var(--bg-elevated)}.countdown{display:flex;align-items:stretch;gap:16px;padding:18px}.countdown 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32px)}@media(min-width:900px){.toast{bottom:24px;left:calc(50% + var(--sidebar-w) / 2)}}.hide-mobile{display:none}@media(min-width:900px){.hide-mobile{display:initial}.hide-desktop{display:none}}.seo-static nav{font-size:15px;margin-bottom:16px}.seo-static h1{font-size:30px;line-height:1.2}.hero{padding:24px 20px;background:linear-gradient(160deg,var(--tint) 0%,color-mix(in srgb,var(--tint) 70%,#1b0b4d) 100%);color:#fff;border-radius:20px}.hero h2{font-size:30px;line-height:36px;font-weight:800;letter-spacing:-.01em;margin:0 0 10px}.hero p{margin:0 0 16px;font-size:17px;line-height:24px;color:#ffffffe6}.hero ul{list-style:none;padding:0;margin:0 0 20px;display:grid;gap:8px}.hero li{display:flex;gap:10px;align-items:flex-start;font-size:16px;line-height:22px}.hero li svg{flex:none;margin-top:1px}.hero .btn.primary{background:#fff;color:#3d2399}.hero .btn.primary:hover{background:#f1edff}.hero .btn.ghost{background:#ffffff29;color:#fff}.hero 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