@font-face{font-family:Geist Variable;font-style:normal;font-display:swap;font-weight:100 900;src:url(/assets/geist-cyrillic-ext-wght-normal-DjL33-gN.woff2)format("woff2-variations");unicode-range:U+460-52F,U+1C80-1C8A,U+20B4,U+2DE0-2DFF,U+A640-A69F,U+FE2E-FE2F}@font-face{font-family:Geist Variable;font-style:normal;font-display:swap;font-weight:100 900;src:url(/assets/geist-cyrillic-wght-normal-BEAKL7Jp.woff2)format("woff2-variations");unicode-range:U+301,U+400-45F,U+490-491,U+4B0-4B1,U+2116}@font-face{font-family:Geist Variable;font-style:normal;font-display:swap;font-weight:100 900;src:url(/assets/geist-vietnamese-wght-normal-6IgcOCM7.woff2)format("woff2-variations");unicode-range:U+102-103,U+110-111,U+128-129,U+168-169,U+1A0-1A1,U+1AF-1B0,U+300-301,U+303-304,U+308-309,U+323,U+329,U+1EA0-1EF9,U+20AB}@font-face{font-family:Geist Variable;font-style:normal;font-display:swap;font-weight:100 900;src:url(/assets/geist-latin-ext-wght-normal-DC-KSUi6.woff2)format("woff2-variations");unicode-range:U+100-2BA,U+2BD-2C5,U+2C7-2CC,U+2CE-2D7,U+2DD-2FF,U+304,U+308,U+329,U+1D00-1DBF,U+1E00-1E9F,U+1EF2-1EFF,U+2020,U+20A0-20AB,U+20AD-20C0,U+2113,U+2C60-2C7F,U+A720-A7FF}@font-face{font-family:Geist Variable;font-style:normal;font-display:swap;font-weight:100 900;src:url(/assets/geist-latin-wght-normal-BgDaEnEv.woff2)format("woff2-variations");unicode-range:U+??,U+131,U+152-153,U+2BB-2BC,U+2C6,U+2DA,U+2DC,U+304,U+308,U+329,U+2000-206F,U+20AC,U+2122,U+2191,U+2193,U+2212,U+2215,U+FEFF,U+FFFD}:root{color:#eef0d8;font-synthesis:none;--gold:#f3cd79;--ink:#143b32;--muted:#b5c9b7;--line:#a5c6ad30;background:#102e2a;font-family:Geist Variable,system-ui,sans-serif;font-weight:400;line-height:1.6}*{box-sizing:border-box}body{margin:0}button,input,textarea{font:inherit}a{color:inherit;text-underline-offset:4px}button,a,input,summary,textarea{-webkit-tap-highlight-color:transparent}button{cursor:pointer;border:0}button:disabled{cursor:default;opacity:.6}button:focus-visible,a:focus-visible,summary:focus-visible,input:focus-visible,textarea:focus-visible{outline-offset:4px;outline:3px solid #f9da90}h1,h2,h3,p{margin:0}h1,h2,h3{letter-spacing:-.035em;line-height:1.2}small{font-size:12px}.site-header,.site-footer,main{max-width:1232px;margin:auto}.site-header{border-bottom:1px solid var(--line);justify-content:space-between;align-items:center;gap:16px;min-height:68px;padding:14px 28px;display:flex}.site-header nav{gap:24px;font-size:12px;display:flex}.site-header nav a{align-items:center;min-height:44px;text-decoration:none;display:inline-flex}.wordmark{letter-spacing:2px;align-items:center;gap:9px;font-size:14px;font-weight:800;text-decoration:none;display:inline-flex}.brand-mark{background:var(--gold);color:#364b32;letter-spacing:0;border-radius:12px 12px 5px 5px;place-items:center;width:30px;height:34px;font-weight:800;display:grid;transform:rotate(-5deg)}.run-label{color:var(--muted);letter-spacing:1px;font-size:11px}.hero{padding:20px 28px 44px}.eyebrow{letter-spacing:1.5px;font-size:10px;font-weight:650;line-height:1.6}.button{background:var(--gold);color:#263c2e;border:1px solid #c6a35b;border-radius:5px;justify-content:center;align-items:center;min-height:46px;padding:12px 20px;font-size:12px;font-weight:750;line-height:1.5;text-decoration:none;transition:background .15s;display:inline-flex;box-shadow:0 4px #9c8143}.button:hover{background:#ffdc92}.button:active{transform:translateY(2px);box-shadow:0 2px #9c8143}.button.secondary{color:#e2e9ca;background:#234d3e;border:1px solid #8caf7c66;box-shadow:0 3px #0d2c24}.button.secondary:hover{background:#315e49}.text-button{color:#d0dfb8;text-underline-offset:4px;background:0 0;border:0;min-height:44px;padding:10px 0;font-size:12px;text-decoration:underline}.muted{color:var(--muted)}.explanation{border-top:1px solid var(--line);padding:48px 28px}.section-title{justify-content:space-between;align-items:center;gap:20px;display:flex}.section-title>.eyebrow{color:#cbb878}.section-title h2{font-size:34px}.how-grid{grid-template-columns:repeat(3,1fr);gap:38px;margin-top:36px;display:grid}.how-grid article>span{letter-spacing:1.5px;color:#cbb878;font-size:10px}.how-grid h3{margin:13px 0;font-size:20px}.how-grid p{color:var(--muted);font-size:13px;line-height:1.9}.editorial-note{border:1px solid var(--line);background:#1d4034;border-radius:10px;align-items:start;gap:24px;margin:16px 28px 50px;padding:26px;display:flex}.editorial-note>span{color:var(--gold);font-size:32px}.editorial-note h2{margin:6px 0 10px;font-size:21px}.editorial-note p{color:var(--muted);max-width:720px;font-size:13px;line-height:1.9}.faq{grid-template-columns:1fr 1.15fr;gap:60px;padding:20px 28px 64px;display:grid}.faq>.eyebrow{color:#cbb878}.faq h2{margin-top:15px;font-size:30px}.faq details{border-bottom:1px solid var(--line);padding:16px 0}.faq summary{cursor:pointer;min-height:28px;font-size:14px;font-weight:550}.faq p{color:var(--muted);margin-top:12px;font-size:13px;line-height:1.9}.site-footer{border-top:1px solid var(--line);padding:30px 28px 40px}.site-footer .wordmark{font-size:11px}.site-footer>p{color:var(--muted);margin:8px 0 16px;font-size:12px}.site-footer nav{gap:24px;margin-bottom:12px;font-size:12px;display:flex}.site-footer nav a{align-items:center;min-height:44px;display:flex}.site-footer small{color:var(--muted);max-width:700px;font-size:11px;display:block}.article{max-width:760px;padding:48px 28px 80px}.back-link{align-items:center;min-height:44px;margin-bottom:22px;font-size:12px;display:inline-flex}.article>.eyebrow{color:#d0bd86;margin-bottom:18px}.article h1{margin:16px 0 24px;font-size:clamp(36px,5vw,54px)}.article-intro{color:var(--muted);margin-bottom:40px;font-size:17px}.article section{margin:32px 0}.article h2{margin-bottom:12px;font-size:23px}.article p{font-size:15px;line-height:1.9}.article>.button{margin-top:30px}.article table{border-collapse:collapse;width:100%;margin:32px 0;font-size:14px}.article th,.article td{text-align:left;border-bottom:1px solid var(--line);padding:10px}.article th{font-weight:550}.article caption{text-align:left;color:var(--muted);margin-bottom:12px;font-size:12px}.skip-link{z-index:10;background:var(--gold);color:var(--ink);padding:10px;position:absolute;top:-80px;left:15px}.skip-link:focus{top:10px}.sr-only{clip:rect(0, 0, 0, 0);white-space:nowrap;border:0;width:1px;height:1px;padding:0;position:absolute;overflow:hidden}.game-intro{color:#d0dcc9;max-width:820px;margin:16px 0 32px;font-size:15px;line-height:1.8}.reading-list{margin:24px clamp(20px,3vw,40px) 48px}.reading-list>p{color:var(--muted);margin-top:12px}.guide-links{flex-wrap:wrap;gap:12px;margin:24px 0;display:flex}.guide-links a{border:1px solid var(--line);border-radius:6px;padding:12px 16px;font-size:13px}.article .actions{flex-wrap:wrap}.game-card{isolation:isolate;color:#edf0d3;background:#779f83;border:1px solid #b5c89755;border-radius:12px;flex-direction:column;min-height:700px;padding:18px 22px 12px;scroll-margin-top:12px;display:flex;position:relative;overflow:hidden}.game-card>:not(.valley-scene){z-index:1;position:relative}.valley-scene{z-index:0;pointer-events:none;position:absolute;inset:0}.valley-background{object-fit:cover;width:100%;height:100%;display:block}.valley-shade{background:linear-gradient(#102e2a00 35%,#0a30254d);position:absolute;inset:0}.valley-climber{width:86px;height:103px;transform:translate(-50%, calc(-1 * var(--climb)));filter:drop-shadow(0 5px 4px #123c2433);position:absolute;top:40%;left:50%}.with-motion .valley-climber{transition:transform .6s cubic-bezier(.22,1,.36,1)}.game-results .valley-shade{background:#102e2a55}.game-answering .valley-climber{top:50%}.game-hud{grid-template-columns:1fr auto 1fr;align-items:start;gap:14px;display:grid}.score-hud,.run-hud,.settings{background:#11392ee8;border:1px solid #bdd29e60;border-radius:7px;box-shadow:0 3px #10312722}.score-hud{justify-self:start;min-width:92px;padding:10px 14px}.score-hud>.eyebrow{color:#c3d7b9;letter-spacing:1.2px;font-size:8px;display:block}.score-hud>b{font-variant-numeric:tabular-nums;font-size:25px;line-height:1.2;display:block}.score-hud small{font-size:10px;font-weight:450}.run-hud{text-align:center;min-width:190px;padding:9px 14px}.run-hud>.eyebrow{color:#c3d7b9;letter-spacing:1px;font-size:8px}.question-counter{letter-spacing:1px;color:#d4dfbe;font-size:8px;display:block}.progress{justify-content:center;gap:5px;margin:7px 0;display:flex}.progress>span{background:#14382d;border:1px solid #9abb96;width:17px;height:7px}.progress>.done{background:#b7cf9b;border-color:#b7cf9b}.progress>.miss{background:#708d76;border-color:#708d76}.progress>.current{background:var(--gold);border-color:var(--gold)}.settings{justify-self:end;gap:2px;padding:0 4px;display:flex}.settings button{color:#d8e1c5;background:0 0;min-height:44px;padding:10px;font-size:10px}.settings button:hover{color:var(--gold)}.world-title{text-align:center;color:#193e32;margin-top:26px}.world-title .eyebrow{letter-spacing:2.4px;font-size:9px}.world-title h2{letter-spacing:-4px;text-shadow:0 2px #edf1d0;margin:9px 0;font-size:clamp(52px,7vw,78px);font-weight:850;line-height:1.05}.world-title>p:last-child{color:#2e5744;font-size:12px}.ready-screen{text-align:center;background:#123a30f2;border:1px solid #bed09f90;border-radius:10px;width:min(420px,100%);margin:140px auto 0;padding:18px 24px;box-shadow:0 8px 30px #0f352e26}.mode-tabs{background:#0c2f27;border-radius:5px;gap:4px;margin-bottom:12px;padding:3px;display:inline-flex}.mode-tabs a{border-radius:3px;align-items:center;min-height:36px;padding:7px 22px;font-size:11px;font-weight:650;text-decoration:none;display:inline-flex}.mode-tabs a[aria-current=page]{color:#1a3a2c;background:#bdd59f}.ready-screen>.eyebrow{color:#c9d6b3;letter-spacing:1px;font-size:8px}.ready-screen h2{letter-spacing:-.6px;margin:9px 0;font-size:21px}.ready-screen>p:not(.eyebrow){color:#d0debf;font-size:12px;line-height:1.8}.start-button{width:100%;margin:18px 0 12px;display:flex}.ready-screen>small{color:#d0debf;font-size:10px;display:block}.game-bottom{color:#e2ebcd;background:#12382ede;border:1px solid #b5ce9650;border-radius:5px;justify-content:space-between;align-items:center;gap:16px;margin-top:18px;padding:10px 13px;font-size:10px;display:flex}.game-bottom a{align-items:center;min-height:24px;display:inline-flex}.game-loading{text-align:center;background:#1b4035;justify-content:center;align-items:center;gap:16px}.game-loading .valley-shade{background:#10382a99}.game-loading h2{font-size:24px}.game-loading p{font-size:13px}.notice{color:#264532;background:#f4dfb2;border-radius:6px;width:100%;max-width:650px;margin:10px auto 0;padding:10px 14px;font-size:12px;line-height:1.65}.notice .text-button{color:#264532;font-size:inherit;min-height:24px;padding:0}.game-answering,.game-reveal{min-height:650px}.question-heading{background:#153c32f5;border:1px solid #bed09f70;border-bottom:0;border-radius:9px 9px 0 0;justify-content:space-between;align-items:center;width:min(580px,100%);min-height:44px;margin:24px auto 0;padding:14px 22px 5px;display:flex}.category{color:var(--gold);text-transform:uppercase;letter-spacing:1.6px;font-size:10px;font-weight:650}.timer{font-variant-numeric:tabular-nums;font-size:25px;font-weight:750;line-height:1}.timer small{margin-left:3px;font-size:11px;font-weight:400}.timer.urgent{color:#ffd083}.timer.urgent:before{content:"! ";font-size:15px}.prompt{letter-spacing:-.025em;color:#fff9df;background:#153c32f5;border:1px solid #bed09f70;border-top:0;border-radius:0 0 9px 9px;width:min(580px,100%);margin:0 auto;padding:8px 22px 20px;font-size:clamp(23px,3vw,30px);line-height:1.25}.game-card form{background:#13392ef0;border:1px solid #b6cf9c80;border-radius:9px;width:min(580px,100%);margin:180px auto 0;padding:14px 18px 8px;box-shadow:0 5px 25px #0d302327}.game-card form>label{color:#d9e4c5;margin-bottom:7px;font-size:10px;font-weight:550;display:block}.answer-row{align-items:stretch;gap:8px;display:flex}.answer-row input{color:#264532;background:#fff9e7;border:2px solid #e2c177;border-radius:5px;flex:1;width:0;min-width:0;min-height:48px;padding:11px 13px;font-size:16px}.answer-row input::placeholder{color:#67745d;font-size:12px}.answer-row .button{border-radius:4px;flex-shrink:0;padding:10px 18px;box-shadow:0 3px #9c8143}.input-message{color:#d1dfb9;min-height:36px;padding-top:10px;font-size:11px;line-height:1.65}.clock-note{color:#bed0b0;padding-bottom:4px;font-size:9px;line-height:1.5}.game-card form>.text-button{min-height:36px;font-size:11px}.game-answering .game-bottom,.game-reveal .game-bottom{margin-top:auto;padding-top:10px}.game-answering form{margin-bottom:18px}.reveal{background:#143b31f5;border:1px solid #bed09f70;border-radius:9px;width:min(580px,100%);margin:18px auto;padding:18px 22px;box-shadow:0 5px 25px #0d302320}.reveal .answer-label{letter-spacing:1.5px;color:#cadbb3;font-size:9px;font-weight:600}.reveal-score{justify-content:space-between;align-items:center;gap:12px;margin:6px 0 15px;display:flex}.reveal-score h3{text-transform:capitalize;overflow-wrap:anywhere;font-size:26px}.reveal-score>b{color:var(--gold);font-variant-numeric:tabular-nums;font-size:32px}.board{background:#0f3029;border:1px solid #85aa7950;border-radius:6px;padding:12px 14px}.board>p{letter-spacing:1px;color:#bad0a9;margin-bottom:6px;font-size:8px}.board>div{text-transform:capitalize;border-radius:3px;gap:13px;padding:5px 8px;font-size:12px;display:flex}.board>div>span{color:#afc59f;font-size:10px}.board>div>b{font-weight:450}.board>div.selected{color:var(--gold);background:#344f35}.next-button{width:100%;margin-top:16px}.with-motion .reveal{animation:.25s ease-out rise-in}@keyframes rise-in{0%{opacity:0;transform:translateY(6px)}to{opacity:1;transform:none}}.result{text-align:center;background:#143b32f5;border:1px solid #bfd29d80;border-radius:10px;width:min(620px,100%);margin:24px auto 18px;padding:24px 30px;box-shadow:0 6px 30px #0e302640}.result-emblem{object-fit:contain;width:64px;height:64px;margin:0 auto 12px;display:block}.result .eyebrow{color:#c6d7b3;font-size:9px}.result h2{color:#fff8d8;margin:15px 0;font-size:28px}.result h2:focus{outline:none}.big-score{letter-spacing:-5px;color:var(--gold);font-variant-numeric:tabular-nums;font-size:82px;font-weight:750;line-height:1.1}.big-score>span{letter-spacing:-1px;color:#c0d2ae;margin-left:8px;font-size:20px;font-weight:400}.result>p:not(.big-score){color:#d1dfbb;font-size:12px}.result-band-row{justify-content:center;gap:9px;margin:20px 0;display:flex}.result-band-row>span{background:#a6c295;border:2px solid #a6c295;border-radius:50%;width:19px;height:19px}.result-band-row>.top{background:var(--gold);border-color:var(--gold)}.result-band-row>.small{background:#c7b46b;border-color:#c7b46b}.result-band-row>.miss{background:0 0;border-color:#91a780}.actions{flex-wrap:wrap;justify-content:center;gap:10px;margin:20px 0 14px;display:flex}.actions>.button{flex:1}.result details{text-align:left;border-top:1px solid #9ebd7d40;padding:14px 0;font-size:12px}.result summary{cursor:pointer;min-height:30px;padding:5px 0;font-weight:550;display:list-item}.result textarea{resize:vertical;color:#264532;background:#fff9e7;border:1px solid #ddcd94;border-radius:5px;width:100%;margin-top:12px;padding:12px;font-size:12px}.review-row{border-bottom:1px solid #9ebd7d40;padding:16px 0}.review-row h3{letter-spacing:0;font-size:14px;line-height:1.5}.review-row p{margin-top:6px;font-size:11px}.replay{width:100%;margin-top:15px}.game-results .game-bottom{margin-top:auto}@media (prefers-reduced-motion:reduce){*,:before,:after{scroll-behavior:auto!important;transition:none!important;animation:none!important}}@media (width<=850px){.hero{padding:16px 20px 36px}.site-header{padding:12px 20px}.game-card{padding:14px 18px 10px}.section-title h2{font-size:29px}.score-hud{min-width:80px}.settings button{padding:10px 7px}.valley-climber{width:76px;height:91px}}@media (width<=600px){.site-header{min-height:62px;padding:10px 16px}.site-header nav{gap:14px;font-size:11px}.wordmark{letter-spacing:1px;font-size:12px}.brand-mark{width:25px;height:29px}.run-label{display:none}.hero{padding:12px 10px 28px}.game-card{border-radius:9px;min-height:700px;padding:12px}.game-hud{grid-template-columns:65px 1fr 64px;gap:7px}.score-hud{width:65px;min-width:0;padding:9px 7px}.score-hud>.eyebrow{letter-spacing:.8px;font-size:7px}.score-hud>b{font-size:21px}.score-hud small{font-size:8px}.run-hud{align-self:start;min-width:0;padding:9px 5px}.run-hud>.eyebrow,.question-counter{letter-spacing:.3px;font-size:7px}.progress{gap:4px;margin:8px 0}.progress>span{width:13px;height:6px}.settings{flex-direction:column;gap:0;min-width:64px;padding:0;display:flex}.settings button{min-height:44px;padding:4px 5px;font-size:9px;line-height:1}.world-title{margin-top:15px}.world-title .eyebrow{letter-spacing:1.2px;font-size:7px}.world-title h2{letter-spacing:-3px;margin:8px 0;font-size:52px}.world-title>p:last-child{font-size:10px}.ready-screen{margin-top:140px;padding:15px 17px}.ready-screen h2{font-size:21px}.ready-screen>p:not(.eyebrow){font-size:11px}.ready-screen>small{font-size:9px}.mode-tabs a{min-height:44px;padding:8px 20px}.game-bottom{gap:8px;margin-top:14px;padding:7px 9px;font-size:8px}.game-bottom a{min-height:30px}.valley-climber{width:80px;height:96px;top:40%}.game-answering,.game-reveal{min-height:660px}.question-heading{margin-top:16px;padding:12px 16px 4px}.prompt{padding:8px 16px 18px;font-size:24px;line-height:1.25}.category{font-size:9px}.timer{font-size:22px}.game-card form{margin-top:160px;padding:12px 12px 7px}.answer-row input{min-height:48px;padding:10px;font-size:16px}.answer-row input::placeholder{font-size:11px}.answer-row .button{min-width:58px;padding:10px 14px}.input-message{min-height:40px;font-size:10px}.game-card form>.text-button{min-height:44px}.game-reveal .valley-climber{opacity:.3}.reveal{margin:14px auto;padding:15px 16px}.reveal-score h3{font-size:24px}.board{padding:10px}.board>div{padding:4px 6px}.result{margin-top:18px;padding:20px 18px}.result h2{font-size:25px}.result .eyebrow{letter-spacing:1px;font-size:8px}.big-score{font-size:76px}.result-emblem{width:55px;height:55px}.result .actions>.button{padding:10px 12px;font-size:11px}.game-results{min-height:740px}.explanation{padding:30px 20px}.section-title{display:block}.section-title h2{margin-top:18px}.how-grid{grid-template-columns:1fr;gap:24px;margin-top:28px}.how-grid h3{margin:8px 0}.editorial-note{gap:16px;margin:14px 20px 36px;padding:20px}.editorial-note h2{font-size:20px}.faq{grid-template-columns:1fr;gap:18px;padding:20px 20px 40px}.site-footer{padding:24px 20px}.article{padding:30px 22px 60px}}@media (width<=350px){.game-card{padding:10px}.game-hud{grid-template-columns:58px 1fr 58px;gap:5px}.score-hud{width:58px;padding:8px 6px}.run-hud{padding:8px 3px}.settings{min-width:58px}.progress{gap:3px}.progress>span{width:11px}.world-title h2{font-size:46px}.ready-screen{padding:14px}.game-bottom{font-size:7px}.prompt{font-size:22px}}@media (width<=600px) and (height<=700px){.game-answering form{margin-top:16px}.game-answering .valley-climber{opacity:.18}.game-ready{min-height:560px}.game-ready .world-title{margin-top:8px}.game-ready .world-title .eyebrow,.game-ready .world-title>p:last-child{display:none}.game-ready .world-title h2{margin:6px 0;font-size:42px}.game-ready .ready-screen{margin-top:100px;padding:13px 14px}.game-ready .ready-screen h2{margin:8px 0;font-size:19px}.game-ready .valley-climber{width:70px;height:84px;top:30%}.game-ready .game-bottom{margin-top:12px}}