:root{--void:#000;--ink:#eceae4;--ink-dim:#b9b6ad;--rule:#eceae42e;--focus:#eceae4}*,:before,:after{box-sizing:border-box}html,body{height:100%}html{background:var(--void);color:var(--ink);-webkit-font-smoothing:antialiased;-moz-osx-font-smoothing:grayscale;text-rendering:optimizelegibility}body{background:var(--void);font-feature-settings:"ss01" on, "cv11" on;flex-direction:column;min-height:100dvh;margin:0;font-family:Geist,Helvetica Neue,Helvetica,sans-serif;font-weight:400;display:flex}::selection{background:var(--ink);color:var(--void)}:focus-visible{outline:1px solid var(--focus);outline-offset:4px}a{color:inherit;text-decoration:none}button{font:inherit;color:inherit;cursor:pointer;background:0 0;border:0;padding:0}.card-face[hidden],.grades[hidden]{display:none!important}.frame{flex-direction:column;flex:1;min-height:100dvh;padding:1.75rem 1.5rem 1.25rem;display:flex}@media (width>=720px){.frame{padding:2.25rem 2.75rem 1.4rem}}@media (width>=1100px){.frame{padding:2.5rem 3.25rem 1.5rem}}.mark{letter-spacing:.14em;text-transform:uppercase;margin:0;font-size:.8125rem;font-weight:500;line-height:1}.mark a:hover{opacity:.72;text-decoration:none}.site-header{border-bottom:1px solid var(--rule);justify-content:space-between;align-items:center;gap:.85rem 1.25rem;padding-bottom:1rem;display:flex}.brand{color:var(--ink);flex:none;line-height:0;display:block}.brand img{width:auto;height:28px;box-shadow:none;filter:none;background:0 0;border:0;border-radius:0;display:block}.brand:hover{opacity:.72}.site-nav{letter-spacing:.14em;text-transform:uppercase;flex-wrap:wrap;justify-content:flex-end;gap:.85rem 1.25rem;margin:0;font-size:.8125rem;font-weight:500;line-height:1;display:flex}.site-nav a{color:var(--ink-dim)}.site-nav a[aria-current=page]{color:var(--ink)}.site-nav a:hover{opacity:.72}main{flex-direction:column;flex:1;justify-content:flex-end;max-width:72rem;padding:2rem 0 0;display:flex}.frame.is-mid main{justify-content:center;padding-bottom:2.5rem}h1{letter-spacing:-.044em;max-width:11ch;margin:0;font-size:clamp(2.75rem,9.15vw,7.15rem);font-weight:500;line-height:.92}h1 button{text-align:left}h1 a:hover,h1 button:hover{opacity:.72;text-decoration:none}.pair,.quiz{letter-spacing:.01em;color:var(--ink-dim);margin:1.75rem 0 0;font-family:Geist Mono,ui-monospace,SFMono-Regular,Menlo,monospace;font-size:.8125rem}.quiz[aria-disabled=true],h1 a[aria-disabled=true]{opacity:.42;pointer-events:none;cursor:not-allowed}.harvest-ui{margin-top:1.75rem}.ghost-feed{min-height:0}.ghost-inner{flex-direction:column;gap:.35rem;max-height:34vh;margin:0 0 1.25rem;display:flex;overflow-y:auto}.ghost-line{letter-spacing:.01em;color:var(--ink-dim);opacity:.75;margin:0;font-family:Geist Mono,ui-monospace,SFMono-Regular,Menlo,monospace;font-size:.8125rem;line-height:1.45}.ghost-line.is-user{color:#8a877d}.ghost-line.is-interim{opacity:.42}.ghost-line.is-system{opacity:.55;font-style:italic;animation:1.6s ease-in-out infinite ghost-pulse}@keyframes ghost-pulse{0%,to{opacity:.55}50%{opacity:.95}}.harvest-controls{letter-spacing:.01em;color:var(--ink-dim);gap:1.5rem;margin-top:1.75rem;font-size:.8125rem;display:flex}.harvest-controls button:hover{opacity:.72}.harvest-start{letter-spacing:.01em;color:var(--ink-dim);margin-top:1.75rem;font-size:.8125rem}.harvest-start:hover{opacity:.72}.confirm{max-width:28rem;margin-top:1.75rem}.confirm p{margin:0;font-size:1.05rem;line-height:1.35}.confirm-row{letter-spacing:.01em;color:var(--ink-dim);gap:1.5rem;margin-top:1.25rem;font-size:.8125rem;display:flex}.confirm-row button:hover{opacity:.72}.building{max-width:16rem;margin-top:1.25rem}.back{opacity:.72}.tool{margin:1rem 0 0}.mark .back,.back{letter-spacing:0;text-transform:none;font-size:1.25rem}.back:hover{opacity:1}.card{text-align:left;max-width:24ch;margin:2.5rem 0 0;display:block}.card-face{letter-spacing:-.044em;font-size:clamp(2.75rem,9.15vw,7.15rem);font-weight:500;line-height:.92;display:block}.card-back{color:var(--ink-dim);margin-top:1.25rem}.grades{letter-spacing:.01em;color:var(--ink-dim);gap:1.5rem;margin-top:1.75rem;font-size:.8125rem;display:flex}.grades button:hover{opacity:.72}.building-bar{background:linear-gradient(90deg, transparent, var(--ink), transparent) left / 40% 100% no-repeat, color-mix(in srgb, var(--ink) 12%, transparent);border-radius:999px;height:.2rem;animation:1.6s linear infinite building-slide;display:block}@keyframes building-slide{0%{background-position:-40% 0}to{background-position:140% 0}}.site-footer{padding-top:1rem;padding-bottom:max(1rem, env(safe-area-inset-bottom));border-top:1px solid var(--rule);letter-spacing:.01em;color:var(--ink-dim);flex-wrap:wrap;justify-content:space-between;align-items:baseline;gap:.75rem 1.5rem;margin-top:auto;font-family:Geist Mono,ui-monospace,SFMono-Regular,Menlo,monospace;font-size:.8125rem;display:flex}.legal{margin:0}.site-footer a:hover,.site-footer button:hover{opacity:.72}@media (width<=479px){h1{letter-spacing:-.03em;max-width:10ch}}@media (prefers-reduced-motion:no-preference){h1,.pair,.quiz{animation:.9s cubic-bezier(.16,1,.3,1) both settle}.pair,.quiz{animation-delay:80ms}}@keyframes settle{0%{transform:translateY(.55rem)}to{transform:translateY(0)}}@media (prefers-reduced-motion:reduce){h1,.pair,.quiz{animation:none}}