:root{color-scheme:dark;--ink:#e5efe9;--muted:#81988c;--line:#91c4a633;--panel:#091712;--panel-soft:#0d1e17;--green:#8de2b0;--green-deep:#142b20;--gold:#f0cf70;--red:#f19a83}*{box-sizing:border-box}html{scroll-behavior:smooth;background:#050d0b;min-height:100%}body{min-width:320px;min-height:100vh;color:var(--ink);background:radial-gradient(circle at 75% -10%,#33755233,#0000 36rem),#050d0b;margin:0;font-family:Manrope,sans-serif}button,input,select{font:inherit}button,a,input,select{-webkit-tap-highlight-color:transparent}button{cursor:pointer}[hidden]{display:none!important}.measurement-shell{background:#040d0ab8;border-inline:1px solid #91c4a614;width:min(1500px,100%);min-height:100vh;margin:0 auto}.measurement-topbar{border-bottom:1px solid var(--line);backdrop-filter:blur(18px);background:#050f0ce6;justify-content:space-between;align-items:center;gap:22px;min-height:70px;padding:11px clamp(15px,3vw,42px);display:flex}.measurement-brand{min-width:max-content;color:var(--ink);align-items:center;gap:10px;font:500 14px DM Mono,monospace;text-decoration:none;display:flex}.measurement-brand strong{color:var(--green);font-weight:500}.measurement-brand-mark{background:#0b1c16;border:1px solid #315443;place-items:center;width:34px;height:34px;display:grid}.measurement-brand-mark svg{fill:none;width:25px;stroke:var(--green);stroke-width:1.35px}.measurement-brand .edition{color:#b9c88e;letter-spacing:.13em;border:1px solid #536549;padding:4px 7px;font-size:8px}.measurement-nav{align-items:center;gap:20px;display:flex}.measurement-nav a{color:#82998e;font-size:10px;font-weight:700;text-decoration:none}.measurement-nav a[aria-current=page],.measurement-nav a:hover{color:var(--green)}.measurement-actions{align-items:center;gap:9px;display:flex}.language-button{color:#9ac2aa;background:#0b1915;border:1px solid #315443;width:38px;height:34px;font:500 9px DM Mono,monospace}.measurement-main{padding:clamp(22px,4vw,56px) clamp(15px,4vw,58px) 80px}.measurement-intro{max-width:920px;margin-bottom:26px}.measurement-kicker{color:var(--green);letter-spacing:.16em;align-items:center;gap:10px;margin:0 0 12px;font:500 9px DM Mono,monospace;display:flex}.measurement-kicker:before{content:"";background:currentColor;width:30px;height:1px}.measurement-intro h1{letter-spacing:-.05em;max-width:820px;margin:0;font-size:clamp(34px,5vw,68px);font-weight:500;line-height:.98}.measurement-intro h1 em{color:var(--green);font-style:normal}.measurement-intro>p:last-child{max-width:700px;color:var(--muted);margin:18px 0 0;font-size:13px;line-height:1.75}.measurement-layout{grid-template-columns:minmax(220px,280px) minmax(0,1fr);align-items:start;gap:clamp(16px,2.4vw,32px);display:grid}.measurement-controls,.measurement-game{border:1px solid var(--line);background:linear-gradient(145deg,#0d1f17f0,#06130ef5);min-width:0}.measurement-controls{position:sticky;top:14px}.control-section{border-bottom:1px solid var(--line);min-width:0;padding:20px}.control-section:last-child{border-bottom:0}.section-label{color:#789184;letter-spacing:.13em;text-transform:uppercase;margin:0 0 13px;font:500 8px DM Mono,monospace}.section-label span{color:var(--green);margin-right:8px}.segmented{background:#07130f;border:1px solid #294438;grid-template-columns:repeat(3,1fr);gap:4px;padding:4px;display:grid}.segmented button{color:#71897c;background:0 0;border:1px solid #0000;min-height:42px;padding:6px 4px;font:700 9px Manrope,sans-serif}.segmented button[aria-pressed=true]{color:#c7efda;background:#183327;border-color:#5b9774}.mode-switch{grid-template-columns:repeat(3,minmax(0,1fr))}.setting-help{color:#71877c;min-height:36px;margin:11px 0 0;font-size:10px;line-height:1.55}.rule-list{color:#82978d;margin:0;padding-left:18px;font-size:10px;line-height:1.7}.rule-list li+li{margin-top:7px}.personal-stats{grid-template-columns:1fr 1fr;gap:7px;display:grid}.personal-stats div{background:#040f0ba8;border:1px solid #294438;min-width:0;padding:10px}.personal-stats span{color:#6d8277;letter-spacing:.08em;text-transform:uppercase;margin-bottom:5px;font:500 7px DM Mono,monospace;display:block}.personal-stats strong{color:#c6e7d3;font:500 13px DM Mono,monospace}.personal-stats .mastery{grid-column:1/-1}.control-link{color:#9bc6ad;overflow-wrap:anywhere;justify-content:space-between;align-items:center;width:100%;min-height:44px;font-size:10px;font-weight:700;text-decoration:none;display:flex}.game-header{border-bottom:1px solid var(--line);justify-content:space-between;align-items:center;gap:20px;min-height:85px;padding:20px clamp(18px,3vw,34px);display:flex}.game-header p{color:var(--green);letter-spacing:.14em;margin:0 0 7px;font:500 8px DM Mono,monospace}.game-header h2{letter-spacing:-.035em;margin:0;font-size:clamp(19px,2.4vw,29px);font-weight:500}.question-count{color:#769084;font:500 10px DM Mono,monospace}.new-question{color:#b9e5c9;background:#12271d;border:1px solid #456c57;min-height:41px;padding:0 14px;font-size:9px;font-weight:800}.sky-stage{border-bottom:1px solid var(--line);background:#040b09;padding:clamp(14px,2vw,25px);position:relative}.angular-frame{aspect-ratio:1;background:#020806;border:1px solid #29483a;border-radius:50%;width:min(100%,720px);margin:0 auto;position:relative;overflow:hidden;box-shadow:inset 0 0 80px #559e7112,0 22px 65px #00000052}.equatorial-frame{aspect-ratio:2;background:#020806;border:1px solid #29483a;border-radius:10px;width:100%;min-height:280px;position:relative;overflow:hidden}.equatorial-frame.local-field{aspect-ratio:1.55;border-radius:2px;width:min(100%,920px);min-height:340px;margin:0 auto;box-shadow:inset 0 0 85px #0000006b,0 20px 55px #00000047}.sky-canvas{touch-action:none;width:100%;height:100%;display:block}.sky-canvas:focus-visible{outline-offset:-5px!important}.map-corner{color:#8fb59db8;letter-spacing:.1em;pointer-events:none;font:500 8px DM Mono,monospace;position:absolute;bottom:11px;left:14px}.orientation-north{color:#afd8bdd1;pointer-events:none;font:500 9px DM Mono,monospace;position:absolute;top:11px;left:50%;transform:translate(-50%)}.orientation-ra{color:#91b69fc2;pointer-events:none;font:500 8px DM Mono,monospace;position:absolute;bottom:10px;right:12px}.blind-stage-label{border:1px solid var(--green);color:#d5f5e1;pointer-events:none;background:#0c2117;border-radius:50%;place-items:center;width:28px;height:28px;font:700 11px DM Mono,monospace;display:grid;position:absolute;top:50%;transform:translate(-50%,-50%);box-shadow:0 0 0 5px #8de2b014}.answer-zone{padding:clamp(18px,2.8vw,30px)}.answer-zone h3{margin:0 0 6px;font-size:15px;font-weight:600}.answer-zone>p{color:#7b9287;margin:0 0 17px;font-size:10px;line-height:1.55}.angle-answer{grid-template-columns:minmax(110px,170px) minmax(180px,1fr) auto;align-items:end;gap:14px;display:grid}.field{gap:7px;display:grid}.field>span,.coordinate-fields label>span{color:#81988c;letter-spacing:.08em;text-transform:uppercase;font:500 8px DM Mono,monospace}.number-shell{background:#07130f;border:1px solid #365747;align-items:center;min-height:48px;display:flex}.number-shell input{color:#e2f1e8;background:0 0;border:0;outline:0;width:100%;min-width:0;height:46px;padding:0 12px;font:500 17px DM Mono,monospace}.number-shell span{color:var(--green);padding-right:12px;font:500 13px DM Mono,monospace}input[type=range]{width:100%;height:48px;accent-color:var(--green)}.submit-answer,.next-answer{color:#06110d;background:linear-gradient(135deg,#a7e6bf,#78d39c);border:1px solid #76ba91;min-height:48px;padding:0 20px;font-size:10px;font-weight:800}.next-answer{color:#b8e5c9;background:#13281e;border-color:#486b58}.coordinate-prompt{justify-content:space-between;align-items:center;gap:16px;margin-bottom:17px;display:flex}.target-coordinate{color:var(--gold);letter-spacing:-.04em;font:500 clamp(18px,3vw,30px) DM Mono,monospace}.coordinate-fields{grid-template-columns:repeat(3,minmax(105px,160px)) auto;align-items:end;gap:11px;display:grid}.coordinate-fields label{gap:7px;display:grid}.coordinate-fields input{color:#e2f1e8;background:#07130f;border:1px solid #365747;outline:0;width:100%;height:48px;padding:0 11px;font:500 15px DM Mono,monospace}.coordinate-fields input:invalid{border-color:#9d5a4d}.locate-instruction{color:#91a89c;background:#0a1813;border:1px solid #3d574a;align-items:center;gap:10px;min-height:52px;margin-bottom:15px;padding:12px 14px;font-size:10px;line-height:1.5;display:flex}.locate-instruction strong{color:#d2e9dc}.feedback-panel{background:#0b1c15;border:1px solid #3e6550;margin-top:18px;padding:16px}.feedback-panel.wrong{background:#21120f;border-color:#795449}.feedback-heading{justify-content:space-between;align-items:center;gap:14px;display:flex}.feedback-heading strong{color:var(--green);font-size:13px}.feedback-panel.wrong .feedback-heading strong{color:#f3ae9e}.feedback-heading span{color:var(--gold);font:500 12px DM Mono,monospace}.feedback-grid{grid-template-columns:repeat(4,minmax(0,1fr));gap:8px;margin-top:13px;display:grid}.feedback-grid div{background:#020b0757;border:1px solid #8bbe9f2b;padding:10px}.feedback-grid small{color:#74897e;letter-spacing:.08em;text-transform:uppercase;margin-bottom:5px;font:500 7px DM Mono,monospace;display:block}.feedback-grid b{color:#d7e9df;font:500 11px DM Mono,monospace}.feedback-actions{justify-content:flex-end;margin-top:14px;display:flex}.object-reveal{color:#afc6b8;margin-top:12px;font-size:10px;line-height:1.6}.object-reveal strong{color:#e4f2e9}.error-message{color:#f2a08d;min-height:18px;margin:8px 0 0;font-size:9px}.save-message{color:#eab095;min-height:16px;margin:11px 0 0;font-size:9px;line-height:1.5}.measurement-footer{border-top:1px solid var(--line);color:#60746a;justify-content:space-between;gap:20px;padding:20px clamp(15px,4vw,58px);font:500 8px DM Mono,monospace;display:flex}.measurement-footer a{color:#8ab89e}@media (width<=980px){.measurement-nav{display:none}.measurement-layout{grid-template-columns:1fr}.measurement-controls{grid-template-columns:1fr 1fr;display:grid;position:static}.control-section{border-right:1px solid var(--line)}.angle-answer{grid-template-columns:150px 1fr}.angle-answer button{grid-column:1/-1}}@media (width<=680px){.measurement-topbar{min-height:61px}.measurement-brand .edition,.measurement-brand>span:nth-child(2){display:none}.measurement-main{padding-top:28px}.measurement-intro h1{font-size:38px}.measurement-controls{grid-template-columns:1fr}.control-section{border-right:0}.game-header{align-items:flex-start}.new-question{padding:0 10px}.angle-answer{grid-template-columns:1fr}.angle-answer button{grid-column:auto}.coordinate-fields{grid-template-columns:1fr 1fr}.coordinate-fields label:last-of-type,.coordinate-fields button{grid-column:1/-1}.feedback-grid{grid-template-columns:1fr 1fr}.equatorial-frame{aspect-ratio:1.45;min-height:250px}.equatorial-frame.local-field{aspect-ratio:1.25;min-height:280px}.measurement-footer{flex-direction:column}}