:root{--bg: #0a0e14;--panel: #0f1620;--fg: #39d353;--ball: #e6f1ff;--text: #c9d6e3;--muted: #6b7c8f;--mono: ui-monospace, "SF Mono", "JetBrains Mono", "Fira Code", Menlo, Consolas, monospace}*{box-sizing:border-box}html{scroll-behavior:smooth}body{margin:0;background:radial-gradient(1200px 600px at 50% -10%,#11202b 0%,var(--bg) 60%);color:var(--text);font-family:var(--mono);line-height:1.6;font-size:clamp(15px,1rem + .2vw,17px);-webkit-font-smoothing:antialiased}main{max-width:720px;min-height:220vh;margin:0 auto;padding:clamp(1.5rem,5vw,4rem) clamp(1rem,4vw,2rem) 6rem}header{text-align:center}h1{font-size:clamp(2rem,7vw,3.2rem);margin:0 0 .6rem;letter-spacing:-.02em;color:#fff;text-shadow:0 0 24px rgba(57,211,83,.25)}h1 .dot{color:var(--fg)}.lede{max-width:48ch;margin:0 auto 1rem}.lede strong{color:var(--fg)}.point{color:var(--fg);letter-spacing:.18em;text-transform:uppercase;font-size:.75rem;animation:blink 1.6s steps(2,start) infinite}@keyframes blink{50%{opacity:.35}}.tab-preview{display:none;align-items:center;gap:.5rem;width:max-content;max-width:100%;margin:1.5rem auto 0;padding:.5rem .9rem;background:#1c2330;border:1px solid #2a3545;border-radius:10px 10px 4px 4px;box-shadow:0 10px 30px -15px #000}.tab-preview .dots{display:inline-flex;gap:4px;margin-right:.25rem}.tab-preview .dots i{width:8px;height:8px;border-radius:50%;background:#3a4555}.tab-preview #tab-favicon{width:16px;height:16px;image-rendering:pixelated;background:var(--bg);border-radius:3px}.tab-preview .tab-title{color:var(--text);font-size:.85rem;white-space:nowrap}@media(hover:none)and (pointer:coarse){.tab-preview{display:flex;justify-content:flex-start;position:fixed;top:0;left:0;right:0;width:auto;max-width:none;transform:none;margin:0;border-radius:0 0 10px 10px;z-index:100}main{padding-top:4.5rem}.point{display:none}}section{margin-top:2.75rem}h2{font-size:1.15rem;color:#fff;border-left:3px solid var(--fg);padding-left:.7rem;margin-bottom:1rem}h2 .muted{font-size:.72rem;font-weight:400}.muted{color:var(--muted)}.selftest-summary{font-weight:700;margin:0 0 .6rem}.selftest-summary.ok{color:var(--fg)}.selftest-summary.fail{color:#ff5c5c}ul.selftest{list-style:none;padding:0;margin:0;font-size:.85rem}ul.selftest li{padding:.15rem 0}ul.selftest li.ok{color:var(--text)}ul.selftest li.fail{color:#ff5c5c}.code details{background:var(--panel);border:1px solid #1c2735;border-radius:10px;margin-bottom:.6rem;overflow:hidden}.code summary{cursor:pointer;padding:.6rem .9rem;color:var(--fg);font-size:.85rem;list-style:none}.code summary:before{content:"▸ "}.code details[open] summary:before{content:"▾ "}.code pre{margin:0;padding:.9rem 1rem;overflow-x:auto;background:#06090d;border-top:1px solid #1c2735;font-size:.78rem;line-height:1.55}.code code{color:var(--text)}footer{margin-top:3rem;text-align:center;color:var(--muted);font-size:.85rem}a{color:var(--fg);text-decoration:none;border-bottom:1px solid transparent}a:hover{border-bottom-color:var(--fg)}@media(prefers-reduced-motion:reduce){.point{animation:none}html{scroll-behavior:auto}}