.search{position:relative}.search__wrap{display:flex;align-items:center;gap:var(--s3);padding:.7rem var(--s4);background:var(--paper-raised);border:1px solid var(--rule-strong);border-radius:var(--radius-lg);transition:border-color var(--response-fast) var(--ease-out),box-shadow var(--response-fast) var(--ease-out)}.search__wrap:focus-within{border-color:var(--accent);box-shadow:0 0 0 3px var(--accent-wash)}.search input{flex:1;min-width:0;border:0;background:transparent;outline:none;font-size:1rem}.search input::placeholder{color:var(--ink-faint)}.search__mark{font-family:var(--font-display);color:var(--ink-faint);font-size:1.1rem}.search__kbd{font-family:var(--font-mono);font-size:.7rem;color:var(--ink-faint);border:1px solid var(--rule);border-radius:3px;padding:.1rem .35rem}.search__results{position:absolute;z-index:40;inset-inline:0;top:calc(100% + var(--s2));background:var(--chrome-bg);backdrop-filter:var(--chrome-blur);border:1px solid var(--rule-strong);border-radius:var(--radius-lg);box-shadow:var(--shadow-3);max-height:26rem;overflow-y:auto;padding:var(--s2);transform-origin:top center;animation:sheet-in var(--response) var(--spring)}@keyframes sheet-in{0%{opacity:0;transform:translateY(-6px) scale(.985)}to{opacity:1;transform:none}}@media (prefers-reduced-motion: reduce){.search__results{animation:fade-in .14s var(--ease-out)}@keyframes fade-in{0%{opacity:0}to{opacity:1}}}.search__hit{display:flex;align-items:baseline;gap:var(--s3);width:100%;text-align:left;padding:var(--s2) var(--s3);border:0;border-radius:var(--radius);background:transparent;cursor:pointer;text-decoration:none}.search__hit[data-active=true]{background:var(--paper-sunk)}.search__hit strong{font-family:var(--font-display);font-weight:500;font-size:.98rem}.search__hit em{font-style:normal;font-family:var(--font-mono);font-size:.75rem;color:var(--ink-faint)}.search__hit span{margin-left:auto;font-size:.72rem;color:var(--ink-faint);text-transform:uppercase;letter-spacing:var(--track-label)}.search__empty{padding:var(--s4);font-size:.9rem;color:var(--ink-faint)}.btn{--btn-bg: transparent;--btn-fg: var(--ink);--btn-border: var(--rule-strong);display:inline-flex;align-items:center;gap:var(--s2);padding:.5rem .9rem;background:var(--btn-bg);color:var(--btn-fg);border:1px solid var(--btn-border);border-radius:var(--radius);font-size:.875rem;font-weight:500;letter-spacing:var(--track-caption);cursor:pointer;transition:transform var(--response-fast) var(--ease-out),background-color var(--response-fast) var(--ease-out),border-color var(--response-fast) var(--ease-out)}.btn:hover:not(:disabled){border-color:var(--ink-soft)}.btn:active:not(:disabled){transform:scale(.97)}.btn:disabled{opacity:.45;cursor:not-allowed}.btn--primary{--btn-bg: var(--ink);--btn-fg: var(--paper);--btn-border: var(--ink)}.btn--primary:hover:not(:disabled){--btn-bg: var(--accent);--btn-border: var(--accent)}.btn--ghost{--btn-border: transparent}.btn--ghost:hover:not(:disabled){background:var(--paper-sunk);border-color:var(--rule)}.btn--on{--btn-bg: var(--accent-wash);--btn-border: var(--accent);--btn-fg: var(--accent)}.field{display:grid;gap:var(--s2)}.field__head{display:flex;align-items:baseline;justify-content:space-between;gap:var(--s3)}.field__name{font-size:.9rem;font-weight:600}.field__sym{font-size:.85rem;color:var(--ink-faint)}.field__wrap{display:flex;align-items:stretch;border:1px solid var(--rule-strong);border-radius:var(--radius);background:var(--paper-raised);overflow:hidden}.field__wrap:focus-within{border-color:var(--accent);box-shadow:0 0 0 3px var(--accent-wash)}.field__wrap[data-invalid=true]{border-color:var(--negative)}.field__prefix,.field__suffix{display:grid;place-items:center;padding:0 .6rem;background:var(--paper-sunk);color:var(--ink-faint);font-size:.8rem;font-family:var(--font-mono);border-inline:1px solid var(--rule)}.field__prefix{border-left:0}.field__suffix{border-right:0}.field input,.field select,.field textarea{flex:1;min-width:0;padding:.55rem .7rem;border:0;background:transparent;outline:none;font-family:var(--font-mono);font-variant-numeric:tabular-nums;font-size:.95rem}.field select{font-family:var(--font-body);cursor:pointer}.field__hint{font-size:.78rem;color:var(--ink-faint)}.field__error{font-size:.78rem;color:var(--negative);font-weight:500}.badge{display:inline-flex;align-items:center;gap:var(--s1);padding:.15rem .5rem;border:1px solid var(--rule-strong);border-radius:999px;font-size:.7rem;font-weight:600;text-transform:uppercase;letter-spacing:var(--track-label);color:var(--ink-soft);white-space:nowrap}.badge--accent{color:var(--accent);border-color:color-mix(in srgb,var(--accent) 45%,transparent);background:var(--accent-wash)}.fcard{display:block;position:relative;padding:var(--s4) var(--s4) var(--s4) var(--s5);background:var(--paper-raised);border:1px solid var(--rule);border-radius:var(--radius-lg);text-decoration:none;transition:transform var(--response) var(--spring),border-color var(--response-fast) var(--ease-out),box-shadow var(--response) var(--ease-out)}.fcard:before{content:"";position:absolute;inset:.6rem auto .6rem .75rem;width:2px;background:var(--card-accent, var(--rule-strong));border-radius:2px}.fcard:hover{transform:translateY(-2px);border-color:var(--rule-strong);box-shadow:var(--shadow-2)}.fcard:active{transform:translateY(0) scale(.995)}.fcard__name{font-family:var(--font-display);font-size:1.1rem;font-weight:500;letter-spacing:var(--track-title)}.fcard__acronym{font-family:var(--font-mono);font-size:.8rem;color:var(--card-accent, var(--ink-faint))}.fcard__meta{margin-top:var(--s2);display:flex;gap:var(--s3);font-size:.78rem;color:var(--ink-faint)}.fcard__blurb{margin-top:var(--s2);font-size:.85rem;color:var(--ink-soft);line-height:1.5;display:-webkit-box;-webkit-line-clamp:2;-webkit-box-orient:vertical;overflow:hidden}.grid{display:grid;gap:var(--s3);grid-template-columns:repeat(auto-fill,minmax(17rem,1fr))}.math--display{display:block;overflow-x:auto;overflow-y:hidden;padding:var(--s1) 0}.math-fallback{font-family:var(--font-mono);color:var(--negative)}.shell{min-height:100dvh;display:grid;grid-template-rows:auto 1fr auto}.masthead{position:sticky;top:0;z-index:30;background:var(--chrome-bg);backdrop-filter:var(--chrome-blur);border-bottom:1px solid var(--rule)}.masthead__in{max-width:var(--page);margin:0 auto;padding:var(--s3) var(--s5);display:flex;align-items:center;gap:var(--s5)}.wordmark{display:flex;align-items:baseline;gap:var(--s2);text-decoration:none;flex-shrink:0}.wordmark__name{font-family:var(--font-display);font-size:1.35rem;font-weight:600;letter-spacing:var(--track-title)}.wordmark__rule{width:1.75rem;height:2px;background:var(--accent);border-radius:2px}.masthead__search{flex:1;max-width:32rem;margin-inline:auto}.masthead__nav{display:flex;align-items:center;gap:var(--s2)}@media (max-width: 52rem){.masthead__in{flex-wrap:wrap}.masthead__search{order:3;flex-basis:100%;max-width:none}.masthead__nav{margin-left:auto}}.navlink{padding:.35rem .6rem;border-radius:var(--radius);font-size:.85rem;text-decoration:none;color:var(--ink-soft);transition:color var(--response-fast) var(--ease-out),background-color var(--response-fast) var(--ease-out)}.navlink:hover{color:var(--ink);background:var(--paper-sunk)}.navlink[aria-current=page]{color:var(--ink);font-weight:600;box-shadow:inset 0 -2px 0 var(--accent);border-radius:0}.colophon{border-top:1px solid var(--rule);margin-top:var(--s8);padding:var(--s6) 0;background:var(--paper-sunk)}.colophon__in{max-width:var(--page);margin:0 auto;padding:0 var(--s5);display:flex;justify-content:space-between;gap:var(--s5);flex-wrap:wrap;font-size:.8rem;color:var(--ink-faint)}.colophon__links{display:flex;gap:var(--s4);flex-wrap:wrap}.pending{display:grid;place-items:center;min-height:50vh;color:var(--ink-faint);font-size:.9rem}:root{--paper: #f7f4ed;--paper-raised: #fffdf8;--paper-sunk: #efeade;--rule: #ddd6c6;--rule-strong: #c4baa4;--ink: #1c1a17;--ink-soft: #4d483f;--ink-faint: #837b6c;--ink-red: #a8342a;--ink-blue: #2a4d7a;--ink-green: #2f5d3f;--ink-violet: #5b3a72;--ink-amber: #8a5a17;--ink-teal: #1f5c5c;--accent: var(--ink-red);--accent-wash: color-mix(in srgb, var(--accent) 8%, transparent);--positive: #2f5d3f;--negative: #a8342a;--font-display: "Newsreader", "Iowan Old Style", Georgia, serif;--font-body: "Public Sans", ui-sans-serif, sans-serif;--font-mono: "JetBrains Mono", ui-monospace, "SF Mono", monospace;--track-display: -.024em;--track-title: -.014em;--track-body: 0em;--track-caption: .02em;--track-label: .09em;--s1: .25rem;--s2: .5rem;--s3: .75rem;--s4: 1rem;--s5: 1.5rem;--s6: 2rem;--s7: 3rem;--s8: 4.5rem;--measure: 68ch;--page: 74rem;--radius: 3px;--radius-lg: 5px;--shadow-1: 0 1px 2px rgba(28, 26, 23, .06);--shadow-2: 0 2px 8px rgba(28, 26, 23, .08), 0 8px 28px rgba(28, 26, 23, .07);--shadow-3: 0 4px 16px rgba(28, 26, 23, .1), 0 20px 56px rgba(28, 26, 23, .12);--spring: linear(0, .234, .685, .949, 1.028, 1.029, 1.007, .999, 1);--response: .36s;--response-fast: .18s;--ease-out: cubic-bezier(.22, 1, .36, 1);--ease-in: cubic-bezier(.64, 0, .78, 0);--chrome-blur: blur(20px) saturate(180%);--chrome-bg: color-mix(in srgb, var(--paper) 72%, transparent);color-scheme:light}[data-theme=dark]{--paper: #14130f;--paper-raised: #1c1a15;--paper-sunk: #0e0d0a;--rule: #322e26;--rule-strong: #4b453a;--ink: #efe9dc;--ink-soft: #b3aa98;--ink-faint: #7c7466;--ink-red: #e0685a;--ink-blue: #7ba6dd;--ink-green: #74b98c;--ink-violet: #b18ad0;--ink-amber: #d6a154;--ink-teal: #63b3b3;--positive: #74b98c;--negative: #e0685a;--shadow-1: 0 1px 2px rgba(0, 0, 0, .4);--shadow-2: 0 2px 8px rgba(0, 0, 0, .45), 0 8px 28px rgba(0, 0, 0, .4);--shadow-3: 0 4px 16px rgba(0, 0, 0, .5), 0 20px 56px rgba(0, 0, 0, .5);color-scheme:dark}@media (prefers-reduced-transparency: reduce){:root{--chrome-bg: var(--paper);--chrome-blur: none}}@media (prefers-contrast: more){:root{--rule: var(--ink-soft);--ink-faint: var(--ink-soft);--chrome-bg: var(--paper);--chrome-blur: none}}*,*:before,*:after{box-sizing:border-box}*{margin:0}html{-webkit-text-size-adjust:100%}body{background:var(--paper);color:var(--ink);font-family:var(--font-body);font-size:100%;line-height:1.6;letter-spacing:var(--track-body);-webkit-font-smoothing:antialiased;text-rendering:optimizeLegibility;background-image:linear-gradient(to bottom,transparent 1.55rem,var(--rule) 1.55rem,transparent calc(1.55rem + 1px));background-size:100% 1.6rem;background-attachment:fixed;background-blend-mode:multiply}[data-theme=dark] body{background-blend-mode:screen}img,svg{display:block;max-width:100%}button,input,select,textarea{font:inherit;color:inherit}h1,h2,h3,h4{font-family:var(--font-display);font-weight:500}h1{font-size:clamp(2rem,4.4vw,3rem);line-height:1.06;letter-spacing:var(--track-display)}h2{font-size:clamp(1.4rem,2.4vw,1.8rem);line-height:1.18;letter-spacing:var(--track-title)}h3{font-size:1.15rem;line-height:1.3;letter-spacing:var(--track-title)}p{max-width:var(--measure)}a{color:inherit;text-decoration-color:var(--rule-strong);text-underline-offset:.2em}a:hover{text-decoration-color:var(--accent)}:focus-visible{outline:2px solid var(--accent);outline-offset:2px;border-radius:2px}.num{font-family:var(--font-mono);font-variant-numeric:tabular-nums;letter-spacing:-.01em}.page{max-width:var(--page);margin:0 auto;padding:0 var(--s5)}.label{font-size:.7rem;font-weight:600;text-transform:uppercase;letter-spacing:var(--track-label);color:var(--ink-faint)}.sheet{background:var(--paper-raised);border:1px solid var(--rule);border-radius:var(--radius-lg);box-shadow:var(--shadow-1)}.rule{border:0;border-top:1px solid var(--rule)}.skip-link{position:absolute;left:var(--s4);top:-4rem;z-index:100;background:var(--ink);color:var(--paper);padding:var(--s2) var(--s4);border-radius:var(--radius);transition:top var(--response-fast) var(--ease-out)}.skip-link:focus{top:var(--s4)}.visually-hidden{position:absolute;width:1px;height:1px;padding:0;overflow:hidden;clip:rect(0 0 0 0);white-space:nowrap;border:0}.katex{color:var(--ink);font-size:1.05em}@media (prefers-reduced-motion: reduce){*,*:before,*:after{animation-duration:.01ms!important;animation-iteration-count:1!important;transition-duration:.12s!important;scroll-behavior:auto!important}[data-motion=enter]{transform:none!important}}