:root{--bg-canvas:#252321;--bg-surface:#34312c;--bg-surface-hover:#403c35;--text-primary:#fff;--text-muted:#ddd7cc;--accent-primary:#a3e635;--accent-secondary:#d4f89b;--border-subtle:#625d53;--border-highlight:#a3e635;--font-sans:system-ui,sans-serif;--font-serif:Georgia,"Times New Roman",serif;--font-mono:ui-monospace,monospace;--ease-kinetic:cubic-bezier(.16,1,.3,1);--shadow-elevation:none;--shadow-inner:none;--glow-accent:none;--glass-backdrop:blur(20px) saturate(190%)}
*{box-sizing:border-box;overflow-wrap:anywhere;hyphens:auto}body{margin:0;background:var(--bg-canvas);color:var(--text-primary);font:1rem/1.7 var(--font-sans)}h1,h2,h3{font-family:var(--font-serif);line-height:1.12;font-weight:400;margin:0 0 1rem}h1{font-size:clamp(2.2rem,5vw,4.2rem);max-width:20ch}h2{font-size:clamp(1.8rem,3.4vw,2.8rem)}h3{font-size:1.5rem}p{margin:0 0 1.2rem}a{color:var(--accent-primary);text-underline-offset:4px}a:hover{color:var(--accent-secondary)}button,input,textarea,select{font:inherit}button,a,input,textarea,summary{touch-action:manipulation}button{cursor:pointer}img{display:block;width:100%;height:100%;object-fit:cover}figure{margin:0}figcaption{color:var(--text-muted);font-size:.85rem;padding:.6rem 0}.wrap{width:min(1100px,calc(100% - 48px));margin-inline:auto}.site-header{position:relative;border-bottom:1px solid var(--border-subtle);padding:20px 0 0}.header-top{display:flex;align-items:center;justify-content:space-between;gap:1rem}.brand{display:inline-flex;align-items:center;gap:12px;text-decoration:none;color:#fff;font-weight:750;font-size:1.08rem;letter-spacing:-.03em}.brand-mark{display:inline-grid;place-items:center;width:34px;height:34px;background:var(--accent-primary);color:#252321;font-family:Georgia,serif;font-size:24px}.site-nav{display:flex;justify-content:center;gap:23px;flex-wrap:wrap;padding:18px 0}.site-nav a{position:relative;color:#fff;text-decoration:none;font-size:.88rem}.site-nav a:after{content:"";position:absolute;bottom:-5px;left:0;width:100%;height:2px;background:var(--accent-primary);transform:scaleX(0);transform-origin:left;transition:transform .25s}.site-nav a:hover:after,.site-nav a[aria-current=page]:after{transform:scaleX(1)}.menu-button{display:none;background:transparent;color:#fff;border:1px solid var(--border-subtle);font-size:1.7rem;line-height:1;padding:7px 15px}.band{padding:58px 0}.band.surface{background:var(--bg-surface)}.band.lime{background:var(--accent-primary);color:#252321}.lime a{color:#252321}.hero{padding:32px 0 28px;position:relative}.eyebrow{font:700 .75rem/1.4 var(--font-sans);letter-spacing:.15em;text-transform:uppercase;margin-bottom:14px;color:var(--accent-primary)}.lime .eyebrow{color:#252321}.intro{max-width:65ch;color:var(--text-muted);font-size:1.12rem}.lime .intro{color:#252321}.grid{display:grid;grid-template-columns:repeat(auto-fit,minmax(300px,1fr));gap:24px}.lanes{display:grid;grid-template-columns:repeat(4,1fr);gap:12px}.panel,.challenge-strip{border:1px solid var(--border-subtle);padding:24px;background:var(--bg-surface)}.challenge-strip{display:flex;flex-direction:column;gap:10px;padding:20px}.challenge-strip p{font-size:.91rem;color:var(--text-muted);margin:0}.challenge-strip h3{font-size:1.35rem;margin:0}.challenge-strip a{margin-top:auto}.number{font:700 .75rem var(--font-mono);color:var(--accent-primary);letter-spacing:.08em}.interactive{transition:transform .35s var(--ease-kinetic),border-color .35s,background .35s}.interactive:hover{transform:translateY(-6px) scale(1.01);border-color:var(--border-highlight);background:var(--bg-surface-hover)}.button,button.action{display:inline-block;width:fit-content;background:transparent;color:var(--accent-primary);border:1px solid var(--accent-primary);padding:11px 17px;text-transform:uppercase;letter-spacing:.1em;text-decoration:none;font-size:.74rem;font-weight:750;line-height:1.5;transition:transform .3s var(--ease-kinetic),background .3s,color .3s}.button:hover,button.action:hover{transform:translateY(-3px);background:var(--accent-primary);color:#252321}.lime .button{color:#252321;border-color:#252321}.lime .button:hover{background:#252321;color:#fff}.actions{display:flex;gap:12px;flex-wrap:wrap;align-items:center;margin-top:20px}:focus-visible{outline:3px solid var(--accent-secondary);outline-offset:5px}.lime :focus-visible{outline-color:#252321}.checklist{list-style:none;padding:0;margin:15px 0}.checklist li{padding:10px 0;border-bottom:1px solid currentColor}.checklist li:before{content:"□";margin-right:12px}.media{aspect-ratio:4/3;background:#34312c;overflow:clip}.media.banner{aspect-ratio:16/9}.media.square{aspect-ratio:1}.media-pair{display:grid;grid-template-columns:1fr 1fr;gap:20px}.callout,blockquote{border-left:4px solid var(--accent-primary);padding:18px 22px;background:var(--bg-surface);margin:24px 0}.callout p:last-child,blockquote p:last-child{margin-bottom:0}blockquote{font:italic 1.3rem/1.5 var(--font-serif)}.prose{width:min(70ch,calc(100% - 48px));margin:0 auto}.prose h2{font-size:2rem;margin-top:2.5rem}.prose h3{margin-top:1.8rem}.prose li{margin-bottom:.7rem}.prose .media{margin:24px 0}.meta{font-size:.83rem;color:var(--text-muted)}.timer{border:1px solid var(--border-subtle);padding:25px;margin:25px 0}.timer-output{display:block;font:4rem/1.2 var(--font-mono);color:var(--accent-primary);font-variant-numeric:tabular-nums}.timer-status{min-height:1.7em;color:var(--text-muted);font-size:.9rem}details{border-top:1px solid var(--border-subtle);padding:19px 0}details:last-child{border-bottom:1px solid var(--border-subtle)}summary{cursor:pointer;font-weight:650;color:var(--accent-primary);padding-right:18px}details[open] summary{margin-bottom:16px}details p:last-child{margin-bottom:0}.solution{border:1px solid var(--border-subtle);padding:22px}.solution:last-child{border-bottom:1px solid var(--border-subtle)}.solution ol{padding-left:22px}.tag{display:inline-block;border:1px solid var(--border-subtle);padding:3px 9px;font: .75rem var(--font-mono);margin:0 7px 10px 0}.form-grid{display:grid;gap:16px}label{display:block;font-weight:600}input,textarea,select{display:block;width:100%;border:1px solid var(--border-subtle);background:var(--bg-canvas);color:#fff;border-radius:0;padding:12px;margin-top:6px}textarea{resize:vertical}small{display:block;color:var(--text-muted);font-weight:400}.status{min-height:1.7em;color:var(--accent-primary);margin:16px 0}button:disabled{opacity:.45;cursor:not-allowed}.site-footer{border-top:1px solid var(--border-subtle);padding:30px 0;color:var(--text-muted);font-size:.85rem}.footer-row{display:flex;justify-content:space-between;gap:24px;flex-wrap:wrap}.footer-links{display:flex;gap:20px;flex-wrap:wrap}.site-footer p{margin:.5rem 0}.skip{position:absolute;top:-100px;left:16px;background:var(--accent-primary);color:#252321;padding:10px;z-index:10}.skip:focus{top:10px}.js .reveal{opacity:0;transform:translateY(18px);transition:opacity .8s var(--ease-kinetic),transform .8s var(--ease-kinetic)}.js .reveal.visible{opacity:1;transform:translateY(0)}[hidden]{display:none!important}.mesh{background-image:radial-gradient(ellipse at 90% 15%,#a3e63512,transparent 65%);background-size:130% 130%;animation:meshDrift 15s ease infinite alternate}@keyframes meshDrift{from{background-position:0 0}to{background-position:100% 100%}}
@media(min-width:1201px){.band{padding:64px 0}.hero{padding:34px 0 28px}}
@media(min-width:769px) and (max-width:1200px){.site-nav{gap:17px}.lanes{grid-template-columns:repeat(2,1fr)}}
@media(min-width:481px) and (max-width:768px){.band{padding:40px 0}.lanes{grid-template-columns:repeat(2,1fr)}}
@media(max-width:767px){.site-header{padding:16px 0}.menu-button{display:block}.site-nav{display:none;position:absolute;top:100%;left:0;width:100%;z-index:5;background:var(--bg-surface);border-bottom:1px solid var(--accent-primary);padding:18px 24px;flex-direction:column;gap:14px}.site-nav.open{display:flex}.site-nav a{padding:5px 0;width:fit-content}.hero{padding:28px 0}.media-pair{gap:12px}}
@media(max-width:480px){.wrap,.prose{width:calc(100% - 32px)}.brand{font-size:.94rem;gap:8px}.band{padding:35px 0}.lanes,.grid,.media-pair{grid-template-columns:1fr}.panel,.challenge-strip{padding:19px}.hero h1{font-size:2.5rem}.footer-row{gap:12px}.timer{padding:18px}}
@media(prefers-reduced-motion:reduce){*,*:before,*:after{animation:none!important;transition:none!important;scroll-behavior:auto!important}.js .reveal{opacity:1;transform:none}.interactive:hover,.button:hover,button.action:hover{transform:none}}