@import url('https://fonts.googleapis.com/css2?family=DM+Sans:wght@400;500;600;700&family=Libre+Caslon+Display&display=swap');
:root{--paper:#f6f4ec;--ink:#28382d;--muted:#74796f;--line:#dcded2;--accent:#a75236;--sage:#e8ecdf;--serif:'Libre Caslon Display',Georgia,serif;--sans:'DM Sans',Arial,sans-serif;color-scheme:light}
*{box-sizing:border-box}body{margin:0;background:var(--paper);color:var(--ink);font:14px var(--sans)}button,input,a{-webkit-tap-highlight-color:transparent}button{font:inherit;cursor:pointer}button:disabled{cursor:default;opacity:.5}button,a,input{outline-offset:5px}button:focus-visible,a:focus-visible,input:focus-visible{outline:2px solid var(--accent)}button{color:inherit}a{color:inherit}.site-header{max-width:1240px;margin:auto;padding:27px 40px 22px;display:flex;align-items:center;justify-content:space-between;border-bottom:1px solid var(--line)}.wordmark{display:flex;align-items:center;gap:9px;font-size:28px;font-weight:700;letter-spacing:-1.6px;text-decoration:none}.brand-dot{color:var(--accent);margin-left:-8px}nav{display:flex;align-items:center;gap:28px}.text-button{background:none;border:0;padding:6px 0;font-size:12px}.text-button:hover{text-decoration:underline;text-underline-offset:4px}.help-button{background:transparent;border:1px solid #bbc2b3;border-radius:50%;height:30px;width:30px;font-size:17px}.help-button:hover{background:var(--sage)}main{max-width:1160px;margin:0 auto;padding:0 40px}.intro{display:flex;align-items:flex-end;justify-content:space-between;padding:42px 0 33px;gap:30px}.eyebrow{font-size:10px;font-weight:600;letter-spacing:1.7px;margin:0}.tiny-line{display:inline-block;background:var(--accent);width:19px;height:2px;vertical-align:middle;margin-right:7px}h1{font:normal clamp(42px,4.3vw,62px)/1.01 var(--serif);letter-spacing:-1.6px;margin:18px 0 0}h1 em{font-weight:400;color:var(--accent)}.round-bar{display:flex;align-items:center;justify-content:space-between;padding:18px 0;border-top:1px solid var(--line)}.round-indicator{display:flex;align-items:center;gap:22px}.progress{display:flex;gap:7px}.progress span{height:7px;width:7px;border-radius:50%;border:1px solid #b5bdad}.progress span.current{background:var(--accent);border-color:var(--accent);box-shadow:0 0 0 3px #a7523615}.progress span.done{background:var(--ink);border-color:var(--ink)}.score-label{font-size:9px;letter-spacing:1.5px;display:flex;align-items:center;gap:7px}.score-label strong{font-size:22px;letter-spacing:-.6px;margin-left:8px}.score-label>span{font-size:12px;letter-spacing:0;color:var(--muted)}.comparison{border:1px solid #d6dccc;border-radius:5px;background-color:#edf0e5;background-image:radial-gradient(#9da98e44 .7px,transparent .7px);background-size:18px 18px;overflow:hidden}.canvas-top,.canvas-bottom{display:flex;align-items:center;justify-content:space-between;padding:19px 24px;color:#6d7966;font-size:9px;letter-spacing:1.4px}.canvas-top>span:first-child{font-weight:600}.scale-note{font-size:8px}.bird-role{font-size:8px;letter-spacing:1.6px;color:#6f7969}.target-role{color:var(--accent)}.bird-caption h2{font:normal 25px/1.1 var(--serif);margin:15px 0 4px}.latin{font:italic 10px Georgia,serif;color:#7e8676;margin:0}.measurement{font-size:11px;font-weight:500;margin:11px 0 0}.measurement span{font-size:9px;font-weight:400;color:var(--muted);margin-left:6px}.target-measurement{color:var(--accent)}.canvas-bottom{font-size:9px;letter-spacing:0;padding-top:17px;padding-bottom:15px;gap:10px}.canvas-bottom>span{display:flex;align-items:center;gap:6px;white-space:nowrap}.legend-dot{width:5px;height:5px;border-radius:50%;background:var(--ink)}.canvas-bottom p{margin:0;color:#6c7864;font-size:10px}.controls{display:flex;gap:40px;align-items:center;padding:27px 0 24px}.primary-button{background:var(--ink);color:#faf9f2;border:1px solid var(--ink);border-radius:4px;font-size:12px;font-weight:500;padding:17px 22px;min-width:220px;display:flex;align-items:center;justify-content:space-between;gap:25px}.primary-button:hover{background:#405344}.primary-button span{font-size:18px}.field-note{text-align:center;font-size:10px;color:var(--muted);margin:6px 0 30px}.field-note>span{font-size:8px;letter-spacing:1.4px;color:var(--accent);margin-right:10px}footer{max-width:1160px;margin:0 auto;padding:23px 40px;border-top:1px solid var(--line);display:flex;justify-content:space-between;align-items:center;gap:20px;font-size:9px;color:var(--muted)}.footer-dot{padding:0 8px;color:#b0b6a7}footer .text-button{font-size:9px}.reveal{display:flex;gap:24px;align-items:center;justify-content:space-between;padding:25px 0}.reveal-copy{flex:1}.reveal h3{font:normal 30px var(--serif);margin:0 0 7px}.reveal p{font-size:11px;color:var(--muted);line-height:1.7;margin:0}.round-points{font:normal 42px var(--serif);color:var(--accent);white-space:nowrap}.round-points span{font:11px var(--sans);color:var(--muted)}.view-toggle{margin-top:10px;display:flex;gap:16px}.view-toggle button{font-size:10px;color:var(--accent);border:0;background:transparent;padding:2px 0;border-bottom:1px solid transparent}.view-toggle button.active{border-bottom-color:var(--accent)}dialog{background:var(--paper);color:var(--ink);border:1px solid var(--line);border-radius:8px;max-width:610px;width:calc(100% - 32px);padding:28px;max-height:85vh}dialog::backdrop{background:#202b2370;backdrop-filter:blur(4px)}.dialog-header{display:flex;align-items:center;justify-content:space-between;margin-bottom:22px}dialog h2{font:36px var(--serif);margin:0 0 18px}dialog h3{font:23px var(--serif);margin-bottom:8px}dialog p,dialog li{font-size:12px;line-height:1.9;color:#687162}dialog ol{padding-left:20px}dialog a{color:var(--accent)}.guide-grid{display:grid;grid-template-columns:1fr 1fr;gap:12px}.guide-bird{border:1px solid var(--line);padding:16px;border-radius:4px}.guide-bird svg{height:74px;width:100%;color:var(--ink)}.guide-bird h3{font-size:21px;margin:8px 0 0}.guide-bird p{font-size:10px;margin:5px 0}.guide-bird a{font-size:10px}#results{padding:30px 0;text-align:center}.results-kicker{font-size:10px;letter-spacing:2px;color:var(--accent)}#results h2{font:normal 56px/1 var(--serif);margin:15px 0}.final-score{font:normal 80px var(--serif);margin:18px 0 12px}.final-score span{font:18px var(--sans);color:var(--muted)}.results-summary{font-size:12px;color:var(--muted)}.scorecard{border-top:1px solid var(--line);margin:28px 0;text-align:left}.score-row{display:grid;grid-template-columns:30px 1fr 1fr 65px;gap:15px;align-items:center;border-bottom:1px solid var(--line);padding:15px 4px;font-size:12px}.score-row small{font-size:10px;color:var(--muted)}.score-row strong{text-align:right;color:var(--accent)}.results-actions{display:flex;justify-content:center;gap:16px}.secondary-button{border:1px solid var(--line);background:transparent;border-radius:4px;padding:16px 24px;font-size:12px}#share-status{font-size:11px;min-height:17px;color:var(--muted)}[hidden]{display:none!important}@media(min-width:1400px){.intro{padding-top:52px;padding-bottom:42px}}
@media(max-width:700px){.site-header{padding:20px 22px}.wordmark{font-size:25px}nav{gap:17px}nav .text-button{font-size:11px}main{padding:0 20px}.intro{display:block;padding:30px 0 25px}h1{font-size:48px}.round-bar{padding:16px 0}.round-indicator{gap:12px}.eyebrow{font-size:8px;letter-spacing:1.4px}.score-label{font-size:8px;gap:4px;letter-spacing:.8px}.score-label strong{font-size:20px;margin-left:2px}.score-label>span{font-size:10px}.canvas-top{padding:16px 14px;font-size:8px}.scale-note{display:none}.bird-role{font-size:7px;letter-spacing:1px}.bird-caption h2{font-size:21px;margin-top:14px;min-height:45px;display:flex;align-items:center;justify-content:center;padding:0 7px}.latin{font-size:9px;min-height:20px;padding:0 7px}.measurement{font-size:10px;margin-top:8px}.measurement span{display:block;font-size:8px;margin:4px 0 0}.canvas-bottom{padding:14px;flex-wrap:wrap}.canvas-bottom p{order:3;flex-basis:100%;text-align:center;font-size:9px;margin-top:3px}.controls{display:block;padding:20px 0}.primary-button{width:100%;justify-content:center;margin-top:22px;padding:15px}.field-note{font-size:9px;line-height:1.7;margin-top:0}.field-note>span{font-size:7px}footer{padding:20px;flex-wrap:wrap;gap:12px;font-size:8px}footer>span:nth-child(2){display:none}.reveal{flex-wrap:wrap;gap:15px}.reveal h3{font-size:27px}.reveal-copy{flex-basis:70%}.reveal .primary-button{margin-top:0}.round-points{font-size:35px}.score-row{grid-template-columns:20px 1fr 75px;gap:8px;font-size:10px}.score-row>small:nth-of-type(2){grid-column:2;grid-row:auto}.score-row strong{grid-column:3;grid-row:span 2}.results-actions{display:block}.results-actions .secondary-button{width:100%;margin-top:12px}.guide-grid{grid-template-columns:1fr 1fr;gap:8px}dialog{padding:21px}.guide-bird{padding:10px}.guide-bird h3{font-size:19px}}
@media(prefers-reduced-motion:reduce){*,*::before,*::after{transition:none!important;scroll-behavior:auto!important}}

/* The playfield uses one physical scale, independent of guess and reveal. */
.playfield{height:390px;position:relative;overflow:hidden;margin:0 22px;isolation:isolate;user-select:none;-webkit-user-select:none;border-bottom:1px solid #bdc8b0}
.canvas-instruction{position:absolute;top:12px;left:0;right:0;text-align:center;pointer-events:none;font-size:8px;letter-spacing:1.3px;color:#788570}
.bird-object{position:absolute;line-height:0;touch-action:none;max-width:none}
.bird-object svg{display:block;width:100%;height:100%;overflow:visible}
.reference-bird{opacity:.46;pointer-events:none;z-index:1}
.player-bird{z-index:2;cursor:grab;pointer-events:auto;outline:1px dashed #a7523660;border-radius:3px}
.player-bird:focus-visible{outline:2px solid var(--accent);outline-offset:5px}
.player-bird.manipulating{cursor:grabbing;outline-color:var(--accent)}
.player-bird.locked{outline:none;cursor:default;pointer-events:none;opacity:.65;z-index:3}
#target-silhouette{width:100%;height:100%;pointer-events:none}
.resize-handle{position:absolute;right:-18px;bottom:-18px;width:36px;height:36px;border:1px solid var(--accent);border-radius:50%;background:var(--paper);color:var(--accent);cursor:nwse-resize;font:21px Arial;line-height:1;touch-action:none;box-shadow:0 2px 6px #28382d12}
.resize-handle:hover{background:#fff}.answer-ghost{z-index:2;pointer-events:none;opacity:.95}
.answer-ghost svg path{fill:#123f47!important;stroke:none}
.dimensions{position:absolute;inset:0;width:100%;height:100%;z-index:4;pointer-events:none;overflow:visible}
.bird-captions{display:grid;grid-template-columns:1fr 1fr;text-align:center;padding:18px 18px 8px}
.bird-caption h2{margin-top:9px}.unit-switch{display:flex;border:1px solid #bdc8b0;border-radius:5px;padding:3px;gap:3px;letter-spacing:0}
.unit-switch button{border:0;background:transparent;border-radius:3px;font-size:10px;padding:7px 11px;color:#697662;white-space:nowrap}
.unit-switch button[aria-pressed=true]{background:var(--ink);color:var(--paper)}.unit-switch span{opacity:.7;margin-left:5px}
.interaction-controls{flex:1}.interaction-controls p{font-size:12px;line-height:1.8;margin:0 0 12px}.interaction-controls p span{font-size:10px;color:var(--muted)}
.fine-controls{display:flex;align-items:center;gap:16px}.fine-controls .text-button{font-size:11px}
.teal{background:#123f47}.orange{background:#c46b30}.gray{background:#939c8b}.overlay-note{margin-top:8px!important;color:#306e78!important}.sr-only{position:absolute;width:1px;height:1px;padding:0;overflow:hidden;clip:rect(0,0,0,0);white-space:nowrap;border:0}
@media(min-width:1400px){.playfield{height:420px}}
@media(max-width:700px){.playfield{height:330px;margin:0 10px}.canvas-instruction{font-size:7px;letter-spacing:.6px;top:5px}.canvas-top{gap:10px;align-items:center}.canvas-top>span{max-width:45%;line-height:1.5}.unit-switch button{font-size:9px;padding:7px}.unit-switch span{display:none}.bird-captions{padding:14px 0 6px}.bird-caption h2{font-size:21px;margin-top:8px;min-height:45px}.interaction-controls p{font-size:11px}.fine-controls{gap:13px}.fine-controls .text-button{font-size:10px}.resize-handle{width:40px;height:40px;right:-20px;bottom:-20px}.canvas-bottom>span{font-size:8px}.canvas-bottom{justify-content:center}.canvas-bottom p{font-size:9px}.controls>.primary-button{margin-top:18px}.bird-caption .measurement span{font-size:8px}}

.board-world{position:absolute;inset:0;transform-origin:0 0;pointer-events:none}.board-world.revealed-camera{transition:transform 1450ms cubic-bezier(.4,0,.2,1)}
.canvas-instruction{z-index:5}.player-bird svg path{fill:#c46b30!important}
.round-score-label{display:block;font:9px var(--sans);letter-spacing:1.4px;color:var(--muted);margin-bottom:5px}.round-points b{font-weight:400;font-variant-numeric:tabular-nums}.score-land{animation:score-land 420ms ease-out}.score-label strong{font-variant-numeric:tabular-nums}
@keyframes score-land{0%{transform:scale(1.16);color:#c46b30}100%{transform:scale(1)}}
@media(prefers-reduced-motion:reduce){.score-land{animation:none}.board-world.revealed-camera{transition:none}}

.dimensions{opacity:.65}
.board-score{position:absolute;z-index:10;left:50%;top:50%;transform:translate(-50%,-50%);display:flex;flex-direction:column;align-items:center;justify-content:center;min-width:220px;padding:24px 34px 22px;border:1px solid #c9d0be;border-radius:12px;background:#f6f4ecf5;box-shadow:0 14px 48px #28382d24;pointer-events:none;color:var(--ink);text-align:center}
.board-score small{font-size:10px;font-weight:600;letter-spacing:2px;color:var(--accent)}
.board-score strong{font:normal clamp(76px,9vw,112px)/1.15 var(--serif);letter-spacing:-4px;font-variant-numeric:tabular-nums;display:block;color:var(--accent)}
.board-score>span{font-size:9px;letter-spacing:1.5px;color:var(--muted)}
.board-score.score-arrive{animation:score-arrive 350ms cubic-bezier(.2,.8,.3,1.3)}
.board-score.score-dismiss{opacity:0;transform:translate(-50%,calc(-50% - 35px)) scale(.85);transition:opacity 550ms ease,transform 550ms ease}
@keyframes score-arrive{from{opacity:0;transform:translate(-50%,-50%) scale(.65)}to{opacity:1;transform:translate(-50%,-50%) scale(1)}}
.round-points b,.score-label strong{display:inline-block}
@media(max-width:700px){.board-score{min-width:170px;padding:20px 28px}.board-score strong{font-size:82px}}
@media(prefers-reduced-motion:reduce){.board-score.score-arrive{animation:none}.board-score.score-dismiss{transform:translate(-50%,-50%);transition:none}}

.intro{display:block;text-align:center;padding:24px 0}.intro h1{font:400 clamp(14px,1.5vw,18px)/1.5 var(--sans);letter-spacing:0;max-width:940px;margin:0 auto}

/* Illustrated field notes, shared by the landing page and preview game. */
.how-to-dialog{max-width:920px;padding:28px}.how-to-dialog h2{font:500 29px/1.2 var(--sans);letter-spacing:-.7px;margin:0 0 10px}.how-to-dialog .help-lead{font-size:13px;margin:0 0 24px;line-height:1.6}
.help-layout{display:grid;grid-template-columns:1fr 1fr;gap:28px;align-items:start}.help-figure{margin:0;background:#edf0e566;border:1px solid #dce1d4}.help-figure>svg{width:100%;height:auto;display:block}.help-figure figcaption{font-size:12px;line-height:1.7;color:#6c7564;border-top:1px solid var(--line);padding:14px 16px}.help-figure strong{color:var(--ink);font-weight:500}
.help-steps{list-style:none;margin:0;padding:0!important}.help-steps li{display:grid;grid-template-columns:28px 1fr;gap:14px;border-top:1px solid var(--line);padding:19px 0}.help-steps li:last-child{border-bottom:1px solid var(--line)}.help-steps li>span{font-size:10px;letter-spacing:1px;color:var(--accent);padding-top:2px}.help-steps h3{font:500 18px var(--sans);margin:0 0 8px}.help-steps p{font-size:14px;line-height:1.75;margin:0}
.help-bottom{display:flex;justify-content:space-between;align-items:center;gap:20px;margin-top:23px;border-top:1px solid var(--line);padding-top:17px}.help-bottom p{font-size:11px;line-height:1.7;margin:0}.help-bottom p:last-child{font-size:10px;white-space:nowrap}.help-bottom strong{color:var(--ink);font-weight:500}
.board-score.perfect strong{font-size:clamp(44px,5vw,64px);letter-spacing:-1.5px;line-height:1.6}.board-score.perfect{border-color:#a5b59b}
@media(max-width:650px){.how-to-dialog{padding:21px}.how-to-dialog h2{font-size:24px}.help-layout{grid-template-columns:1fr;gap:18px}.help-figure{max-width:360px;margin:0 auto;width:100%}.help-figure>svg{max-height:240px}.help-steps li{padding:13px 0}.help-steps h3{font-size:15px;margin-bottom:5px}.help-bottom{display:block;margin-top:17px}.help-bottom p:last-child{margin-top:9px;white-space:normal}.board-score.perfect strong{font-size:46px}}

.final-score b{font-weight:400;font-variant-numeric:tabular-nums;display:inline-block}.tally-status{font-size:11px;color:var(--muted);min-height:18px;margin:0}
.tally-row{grid-template-columns:28px 100px 1fr 92px;min-height:91px;opacity:0;visibility:hidden;transform:translateY(12px);transition:opacity 350ms ease,transform 450ms cubic-bezier(.2,.8,.2,1);padding:14px 4px}
.tally-row.arrived{opacity:1;visibility:visible;transform:translateY(0)}.result-bird{height:60px;display:flex;align-items:center;justify-content:center}.result-bird svg{width:90px;height:60px;display:block}.result-detail{display:flex;flex-direction:column;gap:8px}.result-detail>span{font-size:13px;font-weight:500}.result-detail small{font-size:10px;line-height:1.6}.tally-row strong{grid-column:auto;grid-row:auto;font-size:18px;white-space:nowrap}.tally-row strong b{font-weight:500;font-variant-numeric:tabular-nums}.tally-row strong small{font-size:9px;font-weight:400}
@media(max-width:700px){#results h2{font-size:40px}.final-score{font-size:68px}.tally-row{grid-template-columns:18px 52px 1fr 60px;gap:8px;min-height:88px}.result-bird{height:50px}.result-bird svg{width:52px;height:50px}.result-detail{gap:4px}.result-detail>span{font-size:12px}.result-detail small{font-size:9px}.tally-row strong{grid-column:auto;grid-row:auto;font-size:16px}.tally-row strong small{display:block;font-size:8px}}
@media(prefers-reduced-motion:reduce){.tally-row{transition:none;transform:none}}

/* Grid and camera controls move the complete board at one uniform scale. */
.comparison{background-image:none}
.playfield{touch-action:pan-y;cursor:default;background-image:linear-gradient(to right,#9da4a122 1px,transparent 1px),linear-gradient(to bottom,#9da4a122 1px,transparent 1px);background-size:24px 24px}
.canvas-instruction{left:10px;right:74px;line-height:1.6}
.board-zoom{position:absolute;right:4px;top:8px;z-index:8;display:flex;flex-direction:column;align-items:center;gap:4px;cursor:default}
.board-zoom button{display:grid;place-items:center;width:34px;height:34px;background:var(--paper);border:1px solid #b8beba;border-radius:5px;box-shadow:0 1px 4px #28382d0d;touch-action:manipulation}
.board-zoom button:hover{background:#fff}.board-zoom button:disabled{opacity:.4}.board-zoom svg{width:20px;height:20px;fill:none;stroke:currentColor;stroke-width:1.5;stroke-linecap:round}
.board-zoom span{font-size:9px;color:#69716b;padding:2px 3px;background:#f6f4ecd9;border-radius:3px;font-variant-numeric:tabular-nums}
@media(max-width:700px){.board-zoom{top:6px}.board-zoom button{width:36px;height:36px}.canvas-instruction{right:52px;left:3px;font-size:7px}}

.board-score.perfect strong{font-size:clamp(76px,9vw,112px);letter-spacing:-4px;line-height:1.15}
@media(max-width:700px){.board-score.perfect strong{font-size:82px}}