:root{color-scheme:light;--paper:#f4f6f2;--ink:#1c3027;--muted:#647268;--line:#d7dfd5;--green:#377b51;--lime:#d5eb8d;font-family:Inter,"PingFang SC","Microsoft YaHei",system-ui,sans-serif;color:var(--ink);background:var(--paper);font-synthesis:none;scroll-behavior:smooth;scroll-padding-top:28px}
*{box-sizing:border-box}body{margin:0}a{color:inherit;text-decoration:none}a:focus-visible{outline:3px solid var(--green);outline-offset:6px}::selection{background:var(--lime);color:var(--ink)}.page-shell{max-width:1440px;padding:0 64px;margin:auto}.skip-link{position:absolute;top:-60px;left:20px;background:var(--ink);color:white;padding:12px;z-index:10}.skip-link:focus{top:10px}.site-header{min-height:104px;display:flex;align-items:center;justify-content:space-between;gap:28px;border-bottom:1px solid var(--line)}.brand{display:flex;align-items:center;gap:12px;font-weight:650;font-size:19px;letter-spacing:-.5px;white-space:nowrap}.brand-mark{display:flex;align-items:center;font-size:33px;line-height:1;letter-spacing:-7px;width:35px;font-weight:500}.brand-mark span{color:var(--green);transform:translateY(-2px)}nav{display:flex;align-items:center;gap:31px;font-size:13px}nav a:hover,.text-link:hover{color:var(--green)}.github-link{border-left:1px solid var(--line);padding-left:30px}.github-link span{margin-left:8px}.hero{display:grid;grid-template-columns:.92fr 1.08fr;align-items:center;gap:34px;padding:76px 0 80px}.eyebrow{font-size:10px;font-weight:650;letter-spacing:1.8px;line-height:1.8;color:var(--muted);display:flex;align-items:center;gap:10px;margin:0 0 24px}.status-dot{width:7px;height:7px;border-radius:50%;background:var(--green)}.eyebrow-divider{color:#a8b4a8;margin:0 2px}h1{font-size:clamp(62px,6.9vw,96px);line-height:1.19;font-weight:600;letter-spacing:-4px;margin:0 0 25px}.accent-word{color:var(--green)}.hero-english{font-size:15px;line-height:1.6;letter-spacing:-.1px;margin:0 0 22px;font-weight:500}.hero-description{font-size:15px;line-height:1.9;color:var(--muted);margin:0 0 27px}.button{display:inline-flex;align-items:center;justify-content:space-between;gap:40px;background:var(--ink);color:#fff;font-size:13px;font-weight:500;padding:16px 20px;border-radius:3px;transition:background .18s}.button:hover{background:var(--green)}.availability{font-size:10px;color:var(--muted);margin:13px 0 0;line-height:1.6}.experiment{margin:0;align-self:center;min-width:0;border:1px solid #cbd5c8;border-radius:6px;background:#f9fbf7;box-shadow:0 10px 35px #1c302706;transform:rotate(-1deg)}.experiment-bar{display:flex;justify-content:space-between;align-items:center;padding:19px 22px;border-bottom:1px solid var(--line);font-family:ui-monospace,monospace;font-size:10px;letter-spacing:1.2px;color:var(--muted);gap:10px}.experiment-bar>span:first-child{display:flex;align-items:center;gap:9px}.tiny-square{width:6px;height:6px;background:var(--green)}.world{padding:24px 7px 0}.world-label{font-family:ui-monospace,monospace;letter-spacing:1.5px;font-size:9px;color:#7c897f;padding:0 17px}.world svg{display:block;width:100%;height:auto}.instruction{border-top:1px solid var(--line);margin:0 22px;padding:19px 0;display:flex;align-items:center;gap:15px}.instruction-icon{font-size:27px;color:var(--green)}.instruction-label{font-size:10px;color:var(--muted)}.instruction p{font-size:13px;font-weight:500;line-height:1.65;margin:5px 0 0}.experiment figcaption{border-top:1px solid var(--line);padding:12px 22px;display:flex;align-items:center;gap:9px;font-size:9px;line-height:1.7;color:var(--muted)}.legend-line{width:19px;border-top:2px dashed var(--green)}h2{font-size:clamp(25px,2.6vw,34px);font-weight:550;line-height:1.5;letter-spacing:-1px;margin:0}h3{font-weight:550;font-size:16px;margin:0}p{line-height:1.9}.idea-section{border-top:1px solid var(--line);padding:62px 0 66px;display:grid;grid-template-columns:1fr 1.25fr;gap:64px}.section-intro .eyebrow,.section-heading .eyebrow,.build-section .eyebrow{margin-bottom:14px}.modes article{display:flex;gap:24px;padding:0 0 28px}.modes article+article{border-top:1px solid var(--line);padding:28px 0 0}.mode-number{font-family:ui-monospace,monospace;font-size:12px;color:var(--green);padding-top:4px}.modes h3 span{font-size:10px;font-weight:400;display:block;color:var(--muted);letter-spacing:.5px;margin-top:6px}.modes p{font-size:13px;color:var(--muted);margin:13px 0 0;max-width:460px}.how-section{border-top:1px solid var(--line);padding:58px 0 66px}.section-heading{display:flex;align-items:end;justify-content:space-between;gap:24px}.section-heading>p{color:var(--muted);font-size:12px;margin:0 0 8px}.workflow{list-style:none;padding:0;margin:38px 0 0;display:grid;grid-template-columns:repeat(3,1fr);border-top:1px solid var(--line)}.workflow li{padding:25px 30px 0 0}.workflow li+li{border-left:1px solid var(--line);padding-left:30px}.step-number{font-family:ui-monospace,monospace;color:var(--green);font-size:12px;display:block;margin-bottom:20px}.workflow h3{font-size:16px}.workflow p{font-size:13px;color:var(--muted);margin:12px 0 0}.build-section{border-top:1px solid var(--line);padding:58px 0 66px;display:grid;grid-template-columns:1.1fr 1fr;gap:80px}.build-section p:not(.eyebrow){font-size:13px;color:var(--muted);max-width:470px;margin:16px 0 20px}.text-link{font-size:12px;display:inline-block;border-bottom:1px solid var(--ink);padding-bottom:5px}.text-link span{margin-left:12px}.stack{margin:26px 0 0}.stack>div{display:grid;grid-template-columns:110px 1fr;gap:15px;font-size:12px;padding:18px 0;border-bottom:1px solid var(--line)}.stack>div:first-child{border-top:1px solid var(--line)}.stack dt{color:var(--muted)}.stack dd{margin:0;line-height:1.6}.site-footer{display:flex;align-items:center;justify-content:space-between;gap:20px;padding:27px 0 34px;border-top:1px solid var(--line);font-size:10px;color:var(--muted)}.footer-divider{margin:0 12px;color:#a8b4a8}
@media(min-width:1500px){.hero{padding-top:88px;padding-bottom:90px}}
@media(max-width:1050px){.page-shell{padding:0 36px}.hero{gap:30px;grid-template-columns:.9fr 1.1fr;padding:60px 0}.hero h1{font-size:70px;letter-spacing:-4px}.experiment-bar{padding:16px}.world-label{font-size:8px;letter-spacing:.8px}.instruction{margin:0 16px;gap:10px}.instruction p{font-size:11px}.idea-section{gap:38px}.section-heading{align-items:start;flex-direction:column;gap:8px}.build-section{gap:35px}.stack>div{grid-template-columns:90px 1fr}}
@media(max-width:760px){.page-shell{padding:0 24px}.site-header{min-height:82px;gap:16px}.brand{font-size:16px;gap:8px}.brand-mark{font-size:29px;width:30px}nav{gap:0}nav>a:not(.github-link){display:none}.github-link{border:0;padding:0;font-size:11px}.hero{grid-template-columns:1fr;gap:36px;padding:42px 0 48px}.hero h1{font-size:clamp(54px,16vw,72px);letter-spacing:-2.5px;line-height:1.12;margin-bottom:25px}.eyebrow{font-size:9px;letter-spacing:1.3px;margin-bottom:24px}.hero-english{font-size:13px;margin-bottom:18px}.hero-description{font-size:14px;margin-bottom:22px}.desktop-break{display:initial}.availability{font-size:10px}.experiment{transform:none;max-width:580px;width:100%;justify-self:center}.experiment-bar{font-size:9px}.world{padding-top:21px}.world-label{font-size:8px}.instruction p{font-size:12px}.experiment figcaption{padding:12px 16px;font-size:9px}.idea-section,.build-section{grid-template-columns:1fr;gap:29px;padding:40px 0}.section-intro h2 br{display:none}.modes article{gap:18px}.modes p{max-width:none}.how-section{padding:40px 0}.section-heading{gap:8px}.workflow{grid-template-columns:1fr;margin-top:25px}.workflow li{display:grid;grid-template-columns:34px 1fr;padding:23px 0;column-gap:12px}.workflow li+li{border-left:0;border-top:1px solid var(--line);padding:23px 0}.step-number{grid-column:1;grid-row:1/3;margin:2px 0 0}.workflow h3,.workflow p{grid-column:2}.workflow p{margin:8px 0 0}.workflow p br{display:none}.stack{margin:0}.stack>div{grid-template-columns:100px 1fr;font-size:11px}.site-footer{font-size:9px;flex-wrap:wrap;gap:12px;padding:24px 0}.footer-divider{margin:0 5px}h2{font-size:25px;letter-spacing:-.5px}}
@media(max-width:370px){.page-shell{padding:0 18px}.brand{font-size:14px}.hero h1{font-size:54px}.instruction{gap:8px}.instruction p{font-size:10px}.experiment-bar{font-size:8px;letter-spacing:.6px}.world-label{font-size:7px}.stack>div{grid-template-columns:75px 1fr;gap:10px}}
@media(prefers-reduced-motion:reduce){:root{scroll-behavior:auto}.button{transition:none}}
/* Readable typography, with the original composition retained. */
body{font-size:17px}button{font:inherit;cursor:pointer;color:inherit}button:focus-visible{outline:3px solid var(--green);outline-offset:6px}.github-link,.text-link{background:none;border-top:0;border-right:0;border-bottom:0;font-family:inherit}.github-link{font-size:15px}.text-link{padding:0 0 6px;border-bottom:1px solid var(--ink);font-size:15px}nav{font-size:15px}.eyebrow{font-size:12px;letter-spacing:1.3px;flex-wrap:wrap}.hero-english{font-size:19px}.hero-description{font-size:18px}.button{border:0;font-size:16px}.availability{font-size:13px;max-width:420px}.experiment-bar{font-size:12px}.world-label{font-size:10px;letter-spacing:1px}.instruction-label{font-size:12px}.instruction p{font-size:16px}.experiment figcaption{font-size:12px}.modes h3{font-size:21px}.modes h3 span{font-size:13px}.modes p,.workflow p,.build-section p:not(.eyebrow){font-size:16px}.mode-number,.step-number{font-size:15px}.workflow h3{font-size:20px}.section-heading>p{font-size:15px}.stack>div{font-size:15px;grid-template-columns:100px 1fr}.site-footer{font-size:13px}
#github-dialog{border:1px solid var(--line);border-radius:8px;background:var(--paper);color:var(--ink);width:min(520px,calc(100% - 36px));padding:44px;box-shadow:0 30px 100px #14231c30}#github-dialog::backdrop{background:#16271f88;backdrop-filter:blur(4px)}#github-dialog h2{font-size:30px;line-height:1.25;max-width:340px}#github-description{font-size:17px;color:var(--muted);margin:22px 0 28px}.dialog-close{position:absolute;right:14px;top:10px;border:0;background:none;color:var(--muted);font-size:28px;line-height:1.5;padding:0 8px}#github-dialog .eyebrow{font-size:11px;margin-bottom:20px}
@media(max-width:1050px){.instruction p{font-size:14px}.experiment-bar{font-size:10px}.world-label{font-size:9px}.stack>div{font-size:14px}}
@media(max-width:760px){nav .github-link{font-size:14px}.hero-english{font-size:19px}.hero-description{font-size:17px}.eyebrow{font-size:10px}.availability{font-size:12px}.instruction p{font-size:14px}.experiment figcaption{font-size:11px}.experiment-bar{font-size:10px}.world-label{font-size:8px}.modes p,.workflow p,.build-section p:not(.eyebrow){font-size:16px}.stack>div{font-size:14px;grid-template-columns:88px 1fr}.site-footer{font-size:11px}.workflow{margin-top:25px}.workflow li{grid-template-columns:34px 1fr}.workflow li+li{padding-left:0}#github-dialog{padding:36px 26px}#github-dialog h2{font-size:28px}}
/* Replaceable experiment media; the text stays independent from the image. */
.experiments-section{border-top:1px solid var(--line);padding:58px 0 62px}.experiment-gallery{display:grid;grid-template-columns:1fr 1fr;gap:32px;margin-top:34px}.motion-card{margin:0;min-width:0}.media-frame{border:1px solid var(--line);background:#f9fbf7;border-radius:4px;overflow:hidden;aspect-ratio:16/9}.media-frame img{display:block;width:100%;height:auto}.media-frame .poster{display:none}.motion-card figcaption{padding:23px 0 0}.motion-card .eyebrow{font-size:12px;margin-bottom:10px}.motion-card blockquote{margin:0;font-size:22px;line-height:1.5;font-weight:500;letter-spacing:-.5px}.motion-toggle{border:1px solid #bac9ba;border-radius:3px;background:transparent;padding:10px 15px;font-size:13px;white-space:nowrap;line-height:1.4;align-self:end;color:var(--muted)}.motion-toggle:hover{border-color:var(--green);color:var(--green)}.motion-toggle:disabled{opacity:.5;cursor:default}.concept-note{font-size:13px;color:var(--muted);margin:25px 0 0}.motion-paused .media-frame .animation{display:none}.motion-paused .media-frame .poster{display:block}
@media(prefers-reduced-motion:reduce){body:not(.motion-enabled) .media-frame .animation{display:none}body:not(.motion-enabled) .media-frame .poster{display:block}}
@media(max-width:760px){.experiments-section{padding:40px 0}.experiment-gallery{grid-template-columns:1fr;gap:30px;margin-top:25px}.motion-toggle{align-self:start;margin-top:8px;font-size:13px}.motion-card blockquote{font-size:20px}.motion-card figcaption{padding-top:18px}.concept-note{font-size:12px}.instruction p{font-size:14px}}