@font-face{font-family:Manrope;font-weight:500;font-display:swap;src:url(/fonts/manrope-medium.ttf)format("truetype")}@font-face{font-family:Manrope;font-weight:600;font-display:swap;src:url(/fonts/manrope-semibold.ttf)format("truetype")}@font-face{font-family:Manrope;font-weight:700;font-display:swap;src:url(/fonts/manrope-bold.ttf)format("truetype")}@font-face{font-family:Manrope;font-weight:800;font-display:swap;src:url(/fonts/manrope-extrabold.ttf)format("truetype")}@font-face{font-family:IBM Plex Mono;font-weight:500;font-display:swap;src:url(/fonts/ibm-plex-mono-medium.ttf)format("truetype")}@font-face{font-family:IBM Plex Mono;font-weight:600;font-display:swap;src:url(/fonts/ibm-plex-mono-semibold.ttf)format("truetype")}:root{color-scheme:light;--primary:#2b5fd9;--primary-ink:#1b3f97;--primary-tint:#e8effe;--ink-900:#101a2b;--ink-600:#4a5a72;--ink-500:#6b7a90;--ink-400:#8494a8;--surface:#fff;--canvas:#f4f6f9;--sunken:#eaeef4;--border:#dfe5ee;--border-soft:#f0f3f7;--correct:#17a05e;--correct-tint:#e4f6ec;--correct-ink:#0c6b3e;--incorrect:#d8443c;--incorrect-tint:#fbeae8;--incorrect-ink:#96261f;--streak:#e8a32b;--streak-tint:#fdf2de;--streak-ink:#8a5e0c;--soon-surface:#eef1f6;--soon-border:#cfd8e4;--soon-tile:#e3e8f0;--soon-ink:#6b7a90;--answer-idle-outline:#c3cddb;--answer-muted-surface:#f7f9fc;--answer-muted-outline:#e7ebf2;--search-field-surface:#f1f4f9;--mistake-surface:#101a2b;--mistake-accent:#8fb0f2;--mistake-muted:#b9c4d3;--mistake-hint:#8494a8;--grp-aaa:#0f7f73;--grp-aaa-surface:#e9f4f3;--grp-aaa-ink:#0b5e55;--grp-aaa-hint:#3e7c76;--grp-abb:#5257d3;--grp-abb-surface:#eeeefb;--grp-abb-ink:#33359b;--grp-abb-hint:#5a5ea8;--grp-abc:#c2620f;--grp-abc-surface:#fbf0e4;--grp-abc-ink:#8a4a0b;--grp-abc-hint:#9c6220;--r-sm:8px;--r-md:14px;--r-btn:16px;--r-lg:18px;--r-card:20px;--r-xl:22px;--r-xxl:24px;--r-phone:46px;--font-sans:"Manrope", system-ui, -apple-system, "Segoe UI", Roboto, sans-serif;--font-mono:"IBM Plex Mono", ui-monospace, "SFMono-Regular", Menlo, monospace;--page-pad:32px;--content-max:1120px;--prose-max:760px;--shadow-card:0 3px 10px #0000000f;--shadow-phone:0 24px 60px #101a2b2e}*,:before,:after{box-sizing:border-box}html{-webkit-text-size-adjust:100%}body{background:var(--canvas);color:var(--ink-900);font-family:var(--font-sans);-webkit-font-smoothing:antialiased;-moz-osx-font-smoothing:grayscale;text-rendering:optimizelegibility;margin:0;font-weight:500}img,svg{max-width:100%;display:block}h1,h2,h3,p{margin:0}a{color:var(--primary);text-decoration:none;transition:color .15s}a:hover{color:var(--primary-ink)}:focus-visible{outline:2px solid var(--primary);outline-offset:2px;border-radius:4px}.container{max-width:var(--content-max);margin-inline:auto}.prose-container{max-width:var(--prose-max);margin-inline:auto}.page{background:var(--canvas);min-height:100vh;padding-inline:var(--page-pad)}.mono-label{font-family:var(--font-mono);letter-spacing:.95px;color:var(--ink-400);font-size:10.5px;font-weight:600}.section-kicker{font-family:var(--font-mono);letter-spacing:.95px;color:var(--ink-400);margin-bottom:14px;font-size:10.5px;font-weight:600}.h2{letter-spacing:-.8px;text-wrap:pretty;font-size:32px;font-weight:800;line-height:38px}.card{background:var(--surface);border-radius:var(--r-card)}.btn{font-family:var(--font-sans);white-space:nowrap;align-items:center;gap:10px;font-weight:800;transition:background-color .15s,color .15s;display:inline-flex}.btn:hover{color:inherit}.btn--nav{border-radius:var(--r-btn);background:var(--primary);color:#fff;gap:8px;height:42px;padding:0 20px;font-size:14px}.btn--nav:hover{background:var(--primary-ink);color:#fff}.btn--primary{border-radius:var(--r-btn);background:var(--ink-900);color:#fff;height:56px;padding:0 26px;font-size:16px}.btn--primary:hover{color:#fff;background:#1d2a40}.btn--on-primary{border-radius:var(--r-btn);height:56px;color:var(--primary-ink);background:#fff;padding:0 28px;font-size:16px}.btn--on-primary:hover{color:var(--primary-ink);background:#eef2fb}.visually-hidden{clip:rect(0 0 0 0);white-space:nowrap;border:0;width:1px;height:1px;margin:-1px;padding:0;position:absolute;overflow:hidden}@media (prefers-reduced-motion:reduce){*,:before,:after{transition-duration:.01ms!important;animation-duration:.01ms!important}}