@font-face{font-family:Archivo;font-style:normal;font-weight:100 900;font-display:optional;src:url(/fonts/archivo-latin.woff2) format("woff2")}:root{color-scheme:light;--nd-bg: #f5f6fb;--nd-bg-2: #ecedf7;--nd-card: rgba(48, 55, 110, .045);--nd-card-solid: #fbfbfe;--nd-ink: #26283e;--nd-ink-2: #4a4d68;--nd-mute: #5f627e;--nd-line: rgba(48, 55, 110, .16);--nd-line-2: rgba(48, 55, 110, .3);--nd-slate: #2f3888;--nd-slate-2: #232a68;--nd-teal: #3743ab;--nd-teal-deep: #2c3796;--nd-mint: #4a5ad0;--nd-mint-bright: #3a49bd;--nd-mint-wash: rgba(74, 90, 208, .08);--nd-on-accent: #ffffff;--nd-chip-bg: #2f3888;--nd-chip-fg: #f5f6fb;--nd-ok: #2e3da6;--nd-ok-wash: rgba(74, 90, 208, .09);--nd-warn: #8a6100;--nd-warn-ink: #6e4d00;--nd-warn-wash: rgba(191, 144, 0, .12);--nd-err: #b3261e;--nd-err-wash: rgba(179, 38, 30, .08);--nd-code-bg: #e9eaf4;--nd-shadow: 0 0 0 1px var(--nd-line-2), 0 12px 32px rgba(38, 40, 62, .18);--nd-shadow-sm: 0 0 0 1px var(--nd-line);--nd-font: "Archivo", system-ui, -apple-system, "Segoe UI", Roboto, sans-serif;--nd-mono: "SF Mono", Menlo, Consolas, "Liberation Mono", monospace;--nd-r-lg: 0px;--nd-r-md: 0px;--nd-r-btn: 0px;--nd-r-sm: 0px}@media(prefers-color-scheme:dark){:root{color-scheme:dark;--nd-bg: #2d2b2b;--nd-bg-2: #262424;--nd-card: rgba(255, 255, 255, .06);--nd-card-solid: #383636;--nd-ink: #f3f2f2;--nd-ink-2: #cfcfda;--nd-mute: #a9a9b8;--nd-line: rgba(255, 255, 255, .22);--nd-line-2: rgba(255, 255, 255, .3);--nd-slate: #1f2142;--nd-slate-2: #171833;--nd-teal: #b9c0f0;--nd-teal-deep: #d9ddf7;--nd-mint: #8e99e5;--nd-mint-bright: #b9c0f0;--nd-mint-wash: rgba(142, 153, 229, .1);--nd-on-accent: #2d2b2b;--nd-chip-bg: #f3f2f2;--nd-chip-fg: #2d2b2b;--nd-ok: #b9c0f0;--nd-ok-wash: rgba(142, 153, 229, .14);--nd-warn: #f2c14e;--nd-warn-ink: #f2c14e;--nd-warn-wash: rgba(242, 193, 78, .14);--nd-err: #ffb4ab;--nd-err-wash: rgba(255, 180, 171, .12);--nd-code-bg: #3a3838;--nd-shadow: 0 0 0 1px var(--nd-line-2), 0 12px 32px rgba(0, 0, 0, .5);--nd-shadow-sm: 0 0 0 1px var(--nd-line)}}:root[data-theme=dark]{color-scheme:dark;--nd-bg: #2d2b2b;--nd-bg-2: #262424;--nd-card: rgba(255, 255, 255, .06);--nd-card-solid: #383636;--nd-ink: #f3f2f2;--nd-ink-2: #cfcfda;--nd-mute: #a9a9b8;--nd-line: rgba(255, 255, 255, .22);--nd-line-2: rgba(255, 255, 255, .3);--nd-slate: #1f2142;--nd-slate-2: #171833;--nd-teal: #b9c0f0;--nd-teal-deep: #d9ddf7;--nd-mint: #8e99e5;--nd-mint-bright: #b9c0f0;--nd-mint-wash: rgba(142, 153, 229, .1);--nd-on-accent: #2d2b2b;--nd-chip-bg: #f3f2f2;--nd-chip-fg: #2d2b2b;--nd-ok: #b9c0f0;--nd-ok-wash: rgba(142, 153, 229, .14);--nd-warn: #f2c14e;--nd-warn-ink: #f2c14e;--nd-warn-wash: rgba(242, 193, 78, .14);--nd-err: #ffb4ab;--nd-err-wash: rgba(255, 180, 171, .12);--nd-code-bg: #3a3838;--nd-shadow: 0 0 0 1px var(--nd-line-2), 0 12px 32px rgba(0, 0, 0, .5);--nd-shadow-sm: 0 0 0 1px var(--nd-line)}:root[data-theme=light]{color-scheme:light;--nd-bg: #f5f6fb;--nd-bg-2: #ecedf7;--nd-card: rgba(48, 55, 110, .045);--nd-card-solid: #fbfbfe;--nd-ink: #26283e;--nd-ink-2: #4a4d68;--nd-mute: #5f627e;--nd-line: rgba(48, 55, 110, .16);--nd-line-2: rgba(48, 55, 110, .3);--nd-slate: #2f3888;--nd-slate-2: #232a68;--nd-teal: #3743ab;--nd-teal-deep: #2c3796;--nd-mint: #4a5ad0;--nd-mint-bright: #3a49bd;--nd-mint-wash: rgba(74, 90, 208, .08);--nd-on-accent: #ffffff;--nd-chip-bg: #2f3888;--nd-chip-fg: #f5f6fb;--nd-ok: #2e3da6;--nd-ok-wash: rgba(74, 90, 208, .09);--nd-warn: #8a6100;--nd-warn-ink: #6e4d00;--nd-warn-wash: rgba(191, 144, 0, .12);--nd-err: #b3261e;--nd-err-wash: rgba(179, 38, 30, .08);--nd-code-bg: #e9eaf4;--nd-shadow: 0 0 0 1px var(--nd-line-2), 0 12px 32px rgba(38, 40, 62, .18);--nd-shadow-sm: 0 0 0 1px var(--nd-line)}body.nd-prose{max-width:720px;margin:0 auto;padding:24px 20px 64px;background:var(--nd-bg);color:var(--nd-ink);font:400 16px/1.65 var(--nd-font);-webkit-font-smoothing:antialiased}body.nd-prose h1{font-size:26px;font-weight:800;letter-spacing:-.01em;line-height:1.2}body.nd-prose h2{font-size:18px;font-weight:800;margin-top:28px}body.nd-prose a{color:var(--nd-teal)}body.nd-prose .muted{color:var(--nd-mute);font-size:14px}body.nd-prose .todo{background:var(--nd-warn-wash);color:var(--nd-warn);border:1px dashed var(--nd-warn);padding:1px 6px;border-radius:0}body.nd-prose table{border-collapse:collapse}body.nd-prose td{padding:6px 14px 6px 0;vertical-align:top}body.nd-prose ul{padding-left:20px}body.nd-prose li{margin:4px 0}body.nd-prose .box{border-left:3px solid var(--nd-teal);background:var(--nd-mint-wash);padding:10px 14px;border-radius:0}*{box-sizing:border-box}:root{--fz-base: 16px}:root[data-fs=sm]{--fz-base: 14px}:root[data-fs=lg]{--fz-base: 18px}html,body{margin:0;padding:0}body{background:var(--nd-bg);color:var(--nd-ink);font:400 var(--fz-base) / 1.6 var(--nd-font);-webkit-font-smoothing:antialiased;min-height:100vh}a{color:var(--nd-teal);text-decoration:none}a:hover{text-decoration:underline;color:var(--nd-teal-deep)}h1,h2,h3,h4{font-weight:800;letter-spacing:-.015em;line-height:1.15}.muted{color:var(--nd-mute)}.small{font-size:.875em}.mono{font-family:var(--nd-mono)}kbd{font:600 .82em var(--nd-mono);background:var(--nd-code-bg);color:var(--nd-ink);border:1px solid var(--nd-line);border-radius:0;padding:1px 5px}.nd-app{display:flex;flex-direction:column;min-height:100vh}.nd-main{flex:1}.nd-page{max-width:880px;margin:0 auto;padding:20px 18px 48px}.nd-page--narrow{max-width:680px}.nd-page--wide{max-width:1100px}.back,.nd-back{display:inline-flex;align-items:center;min-height:44px;margin-bottom:6px;font-size:15px;font-weight:600;color:var(--nd-ink-2)}.nd-sitehead{display:flex;align-items:center;gap:6px 18px;padding:0 24px;border-bottom:2px solid var(--nd-line-2)}.nd-sitehead__brand{font-weight:800;font-size:17px;color:var(--nd-ink);padding:13px 0;flex:none}.nd-sitehead__brand b{color:var(--nd-mint)}.nd-sitehead__brand:hover{text-decoration:none}.nd-sitehead nav{display:flex;gap:16px;align-items:stretch;align-self:stretch;overflow-x:auto;scrollbar-width:none}.nd-sitehead nav::-webkit-scrollbar{display:none}.ck-tab{display:inline-flex;align-items:center;white-space:nowrap;font-size:15px;color:var(--nd-ink-2);padding:15px 4px 13px;border-bottom:2px solid transparent;margin-bottom:-2px;min-height:48px}.ck-tab:hover{color:var(--nd-ink);text-decoration:none}.ck-tab[aria-current=page]{color:var(--nd-ink);font-weight:600;border-bottom-color:var(--nd-mint)}.nd-sitehead__right{margin-left:auto;display:flex;align-items:center;gap:10px;flex:none}.ck-streak{display:inline-flex;align-items:center;gap:4px;font-size:12.5px;font-weight:600;color:var(--nd-teal)}.ck-days{font-size:12px;color:var(--nd-ink-2);border:1px solid var(--nd-line-2);padding:4px 10px;font-variant-numeric:tabular-nums;white-space:nowrap}.ck-avatar{width:28px;height:28px;flex:none;background:var(--nd-chip-bg);color:var(--nd-chip-fg);display:grid;place-items:center}.ck-avatar:hover{background:var(--nd-teal-deep);color:var(--nd-bg);text-decoration:none}.ck-account{display:inline-flex;align-items:center;min-height:44px;min-width:0;font-size:13px;font-weight:600;color:var(--nd-ink-2)}.ck-account:hover{color:var(--nd-ink);text-decoration:none}.ck-account:hover .ck-avatar{background:var(--nd-teal-deep);color:var(--nd-bg)}.ck-account__id{overflow:hidden;text-overflow:ellipsis;white-space:nowrap;min-width:0;max-width:240px;margin-left:8px}@media(min-width:768px)and (max-width:1299.98px){.ck-account__id{--nd-id-room: calc(100vw - 1060px) ;max-width:min(240px,var(--nd-id-room),max(0px,(var(--nd-id-room) - 60px) * 1000));margin-left:min(8px,max(0px,(var(--nd-id-room) - 60px) * 1000))}.nd-sitehead:not(:has(.nd-lite)) .ck-account__id{--nd-id-room: calc(100vw - 1000px) }.nd-sitehead:not(:has(.ck-days)) .ck-account__id{--nd-id-room: calc(100vw - 880px) }.nd-sitehead:not(:has(.ck-days,.nd-lite)) .ck-account__id{--nd-id-room: calc(100vw - 820px) }}.ck-login{font-size:15px;font-weight:600;color:var(--nd-teal);align-self:center;display:inline-flex;align-items:center;min-height:44px;padding:0 6px}.nd-due-badge{border:1px solid var(--nd-warn);color:var(--nd-warn);border-radius:0;padding:2px 9px;font-size:12px!important}.nd-sitehead__theme{border:1px solid var(--nd-line);background:transparent;color:var(--nd-ink-2);border-radius:0;width:44px;height:44px;cursor:pointer;display:grid;place-items:center;flex:none}.nd-sitefooter{margin:40px auto 0;padding:18px 20px 30px;max-width:720px;border-top:1px solid var(--nd-line);font:500 13px/1.7 var(--nd-font);color:var(--nd-mute);text-align:center}.nd-sitefooter b{display:block;font-weight:800;font-size:15px;margin-bottom:6px;color:var(--nd-ink)}.nd-sitefooter a{color:inherit;display:inline-block;padding:6px 2px}.nd-incident{position:sticky;top:0;z-index:40;background:#7a2e12;color:#fff;padding:10px 16px;font:600 13.5px/1.5 var(--nd-font);text-align:center;display:flex;gap:8px;align-items:center;justify-content:center}.nd-icon{vertical-align:middle;flex:none}.nd-card{background:var(--nd-card);border:1px solid var(--nd-line-2);border-radius:var(--nd-r-lg);padding:18px;margin:14px 0}.nd-card--dark{background:var(--nd-slate);color:#f5f6fb;border-color:transparent}.nd-card--dark a{color:#d9ddf7}.nd-card--dark .nd-chip{background:#ffffff29;color:#f5f6fb}.nd-card--dark .nd-btn--mint,.nd-card--dark a.nd-btn--mint{background:#f5f6fb;color:var(--nd-slate)}.nd-card--dark .nd-btn:not(.nd-btn--mint),.nd-card--dark a.nd-btn:not(.nd-btn--mint){border-color:#ffffff73;color:#f5f6fb;background:transparent}.nd-btn{display:inline-flex;align-items:center;gap:7px;justify-content:center;font:800 15px var(--nd-font);padding:10px 18px;border-radius:var(--nd-r-btn);border:1px solid var(--nd-line-2);background:transparent;color:var(--nd-ink);cursor:pointer;text-decoration:none;min-height:44px;line-height:1.25}.nd-btn:hover{border-color:var(--nd-teal);background:var(--nd-card);text-decoration:none}.nd-btn--accent{background:var(--nd-mint);color:var(--nd-on-accent);border-color:transparent}.nd-btn--accent:hover{background:var(--nd-mint-bright);border-color:transparent}.nd-btn--mint{background:var(--nd-mint);color:var(--nd-on-accent);border-color:transparent}.nd-btn--ghost{background:transparent}.nd-btn--big{padding:13px 22px;font-size:16px}.nd-btn--sm{padding:8px 12px;font-size:14px;min-height:40px}.nd-btn:disabled{opacity:.5;cursor:not-allowed}.nd-btn-row{display:flex;gap:10px;flex-wrap:wrap;align-items:center}.nd-chip{display:inline-block;font-size:12px;font-weight:700;padding:2px 9px;border-radius:0;background:var(--nd-mint-wash);color:var(--nd-teal)}.badge{display:inline-block;font-size:12px;font-weight:600;padding:2px 8px;letter-spacing:.04em;text-transform:uppercase;border-radius:0;background:transparent;color:var(--nd-ink-2);border:1px solid var(--nd-line-2)}.badge--ok{background:var(--nd-ok-wash);color:var(--nd-ok)}.badge--warn{background:var(--nd-warn-wash);color:var(--nd-warn)}.badge--pyq{background:var(--nd-mint-wash);color:var(--nd-teal)}.nd-qstem{font-size:1.1em;font-weight:600;margin:12px 0;white-space:pre-wrap;max-width:62ch;line-height:1.5}.nd-options{list-style:none;padding:0;margin:0;display:flex;flex-direction:column;gap:8px}.nd-options{max-width:720px}.nd-option{display:flex;gap:12px;align-items:center;padding:11px 13px;width:100%;text-align:left;border:1px solid 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8px;align-items:baseline;flex-wrap:wrap;line-height:1.5}.nd-source__label{font-weight:800;color:var(--nd-ink-2)}.nd-source__cite{color:var(--nd-ink-2)}.nd-source__verified{font-size:13px;color:var(--nd-teal)}.q-image{max-width:100%;height:auto;border-radius:var(--nd-r-md);margin:10px 0;border:1px solid var(--nd-line);background:#fff}.nd-palette-grid{display:grid;grid-template-columns:repeat(auto-fill,minmax(34px,1fr));gap:6px}.nd-palette-cell{aspect-ratio:1;border:1px solid var(--nd-line-2);border-radius:0;font-size:12px;font-weight:600;background:transparent;color:var(--nd-ink-2);cursor:pointer}.nd-palette-cell.answered{background:var(--nd-chip-bg);color:var(--nd-chip-fg);border-color:transparent}.nd-palette-cell.flagged,.nd-palette-cell.marked{background:var(--nd-mint);color:var(--nd-on-accent);border-color:transparent}.nd-palette-cell.answered.flagged,.nd-palette-cell.answered.marked{background:var(--nd-chip-bg);color:var(--nd-chip-fg);box-shadow:inset 0 0 0 2px 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