:root{color-scheme:light;--bg:#fff;--bg-panel:#f6f6f6;--line:#d4d4d4;--line-soft:#e8e8e8;--text:#000;--text-dim:#525252;--text-dimmer:#6b6b6b;--accent:#000;--accent-ink:#fff;--accent-hover:#2b2b2b;--tint:#f1f1f1;--ok:#15803d;--warn:#a16207;--err:#c62828;--radius:6px;--font:Inter,system-ui,-apple-system,"Segoe UI",sans-serif;--font-display:Archivo,Inter,system-ui,sans-serif;--font-mono:"IBM Plex Mono",ui-monospace,monospace}
@media (prefers-color-scheme:dark){:root:not([data-theme="light"]){color-scheme:dark;--bg:#000;--bg-panel:#0f0f0f;--line:#303030;--line-soft:#1f1f1f;--text:#fff;--text-dim:#a8a8a8;--text-dimmer:#8c8c8c;--accent:#fff;--accent-ink:#000;--accent-hover:#d9d9d9;--tint:#161616;--ok:#4ade80;--warn:#fbbf24;--err:#ff6b6b}}
:root[data-theme="dark"]{color-scheme:dark;--bg:#000;--bg-panel:#0f0f0f;--line:#303030;--line-soft:#1f1f1f;--text:#fff;--text-dim:#a8a8a8;--text-dimmer:#8c8c8c;--accent:#fff;--accent-ink:#000;--accent-hover:#d9d9d9;--tint:#161616;--ok:#4ade80;--warn:#fbbf24;--err:#ff6b6b}
*{box-sizing:border-box}
html,body{margin:0;background:var(--bg);color:var(--text);font-family:var(--font);font-size:16px;line-height:1.6;-webkit-font-smoothing:antialiased}
img,svg{display:block;max-width:100%}
a{color:inherit}
h1,h2,h3{font-family:var(--font-display);line-height:1.15;letter-spacing:-.01em;margin:0 0 .5em}
h1{font-size:clamp(2rem,4.6vw,3.2rem)}h2{font-size:clamp(1.5rem,3vw,2rem);margin-top:0}h3{font-size:1.15rem}
p{margin:0 0 1em}
.wrap{width:min(1100px,100% - 32px);margin-inline:auto}
.skip-link{position:absolute;left:-999px}.skip-link:focus{left:16px;top:8px;background:var(--accent);color:var(--accent-ink);padding:8px 12px;z-index:9}
.site-header{border-bottom:1px solid var(--line-soft);position:sticky;top:0;background:var(--bg);z-index:5}
.site-nav{display:flex;align-items:center;justify-content:space-between;min-height:64px;gap:16px;flex-wrap:wrap}
.brand{display:flex;align-items:center;gap:10px;font-family:var(--font-display);font-weight:700;text-decoration:none}
.brand small{font-family:var(--font);font-weight:500;color:var(--text-dim);font-size:13px}
.nav-links{display:flex;gap:18px;flex-wrap:wrap;font-size:14px}
.nav-links a{text-decoration:none;color:var(--text-dim)}.nav-links a:hover{color:var(--text)}
.btn{display:inline-flex;align-items:center;justify-content:center;gap:8px;min-height:44px;padding:0 18px;border-radius:var(--radius);border:1px solid var(--text);font:600 15px var(--font);text-decoration:none;cursor:pointer;background:transparent;color:var(--text);transition:background-color .15s,color .15s}
.btn-primary{background:var(--accent);color:var(--accent-ink)}.btn-primary:hover{background:var(--accent-hover)}
.btn-secondary:hover{background:var(--tint)}
.btn:focus-visible,a:focus-visible,input:focus-visible,select:focus-visible,button:focus-visible{outline:2px solid var(--text);outline-offset:3px}
.btns{display:flex;gap:10px;flex-wrap:wrap}
.hero{padding:72px 0 56px}
.kicker{font:500 13px var(--font-mono);color:var(--text-dim);text-transform:uppercase;letter-spacing:.08em;margin-bottom:14px}
.lede{font-size:1.15rem;color:var(--text-dim);max-width:62ch}
.section{padding:56px 0;border-top:1px solid var(--line-soft)}
.grid-3{display:grid;grid-template-columns:repeat(3,1fr);gap:20px}
.grid-2{display:grid;grid-template-columns:repeat(2,1fr);gap:20px}
.card{border:1px solid var(--line);border-radius:var(--radius);padding:22px;background:var(--bg)}
.card p{color:var(--text-dim);font-size:15px;margin:0}
.tag{font:500 12px var(--font-mono);border:1px solid var(--line);border-radius:4px;padding:2px 8px;color:var(--text-dim)}
.steps{counter-reset:s;list-style:none;padding:0;margin:0;display:grid;gap:14px}
.steps li{counter-increment:s;display:grid;grid-template-columns:40px 1fr;gap:14px;align-items:start}
.steps li::before{content:counter(s);font:600 14px var(--font-mono);width:36px;height:36px;border:1px solid var(--text);border-radius:50%;display:grid;place-items:center}
.steps li p{color:var(--text-dim);margin:0}
.flow{display:flex;flex-wrap:wrap;gap:10px;align-items:center;font-size:15px}
.flow span{border:1px solid var(--line);border-radius:var(--radius);padding:12px 16px;background:var(--bg-panel)}
.flow i{font-style:normal;color:var(--text-dimmer)}
.check{list-style:none;padding:0;margin:0;display:grid;gap:10px}
.check li{padding-left:26px;position:relative;color:var(--text-dim)}
.check li::before{content:"";position:absolute;left:2px;top:.55em;width:12px;height:6px;border-left:2px solid var(--text);border-bottom:2px solid var(--text);transform:rotate(-45deg)}
.notice{border:1px solid var(--line);border-left:3px solid var(--warn);background:var(--bg-panel);padding:14px 16px;border-radius:var(--radius);font-size:15px}
.pricing{display:grid;gap:12px}
.form{display:grid;gap:14px;max-width:640px}
.form .row{display:grid;grid-template-columns:1fr 1fr;gap:14px}
label{display:grid;gap:6px;font-size:14px;font-weight:500}
input,select,textarea{font:inherit;font-size:16px;padding:10px 12px;border:1px solid var(--line);border-radius:var(--radius);background:var(--bg);color:var(--text);width:100%}
input[aria-invalid="true"]{border-color:var(--err)}
.form-status{font-size:14px;min-height:1.4em;margin:0}.form-status.err{color:var(--err)}.form-status.ok{color:var(--ok)}
details{border-bottom:1px solid var(--line-soft);padding:14px 0}
summary{cursor:pointer;font-weight:600}
details p{color:var(--text-dim);margin:10px 0 0}
.site-footer{border-top:1px solid var(--line-soft);padding:28px 0;font-size:14px;color:var(--text-dim)}
.site-footer a{color:var(--text-dim)}
@media (max-width:820px){.grid-3{grid-template-columns:1fr}.grid-2{grid-template-columns:1fr}.form .row{grid-template-columns:1fr}.hero{padding:44px 0 36px}}
/* Open source */
.nav-links a[aria-current="page"]{color:var(--text)}
.btn-sm{min-height:34px;padding:0 12px;font-size:13px}
.muted{color:var(--text-dim)}
code{font-family:var(--font-mono);font-size:.9em;background:var(--tint);border-radius:4px;padding:1px 5px;overflow-wrap:anywhere}
.os-project{display:grid;grid-template-columns:minmax(0,1.05fr) minmax(0,1fr);gap:40px;align-items:center}
.os-meta{margin-top:14px;font-size:14px;color:var(--text-dim)}
.os-two{gap:48px}
.steps li > div > b{display:block;margin-bottom:2px}
.hash{display:flex;gap:10px;align-items:center;border:1px solid var(--line);border-radius:var(--radius);padding:10px 12px;background:var(--bg-panel)}
.hash code{flex:1;background:none;padding:0;font-size:13px;line-height:1.5;word-break:break-all}
.notice a{color:inherit}
/* Island illustration (decorative) */
.island-demo{margin:0}
.island-screen{position:relative;aspect-ratio:16/10;border-radius:14px;border:1px solid var(--line);overflow:hidden;background:linear-gradient(135deg,#2d3a4a,#6b4f6f 45%,#c2876b);display:flex;justify-content:center}
.island{--w:200px;--h:38px;position:absolute;top:14px;width:var(--w);height:var(--h);border-radius:22px;background:#000;color:#fff;box-shadow:0 8px 24px rgba(0,0,0,.35);overflow:hidden;transition:width .45s cubic-bezier(.3,1.4,.5,1),height .45s cubic-bezier(.3,1.4,.5,1),border-radius .45s;cursor:pointer;font-family:var(--font)}
.island:hover,.island.open{--w:min(340px,86%);--h:118px;border-radius:30px;outline:none}
.island-small{position:absolute;inset:0;display:flex;align-items:center;justify-content:center;gap:8px;font-size:13px;font-weight:600;transition:opacity .2s}
.island-small .sep{opacity:.4}
.island-big{position:absolute;inset:0;display:grid;grid-template-columns:70px 1fr auto;gap:14px;align-items:center;padding:0 22px;opacity:0;transition:opacity .2s}
.island:hover .island-small,.island.open .island-small{opacity:0}
.island:hover .island-big,.island.open .island-big{opacity:1;transition-delay:.15s}
.island-big .art{width:70px;height:70px;border-radius:14px;background:linear-gradient(140deg,#ff6b6b,#7b5cff)}
.island-big .track{display:grid;gap:2px;min-width:0;font-size:13px}
.island-big .track b{font-size:14px;white-space:nowrap;overflow:hidden;text-overflow:ellipsis}
.island-big .track span{color:#a8a8a8}
.island-big .track i{display:block;height:4px;border-radius:2px;background:#333;margin-top:8px;overflow:hidden}
.island-big .track em{display:block;height:100%;width:42%;background:#fff;border-radius:2px}
.island-big .bars{display:flex;gap:3px;align-items:flex-end;height:22px}
.island-big .bars s{width:4px;height:30%;background:#ff8a7a;border-radius:2px;animation:bar 1s ease-in-out infinite alternate}
.island-big .bars s:nth-child(2){animation-delay:-.3s}.island-big .bars s:nth-child(3){animation-delay:-.6s}.island-big .bars s:nth-child(4){animation-delay:-.15s}
@keyframes bar{to{height:100%}}
.island-demo figcaption{font-size:13px;color:var(--text-dimmer);margin-top:10px;text-align:center}
@media (prefers-reduced-motion:reduce){.island,.island-small,.island-big{transition:none}.island-big .bars s{animation:none;height:60%}}
@media (max-width:820px){.os-project{grid-template-columns:1fr}.os-two{gap:36px}}
/* Home: category cards */
.card-link{display:flex;flex-direction:column;gap:10px;text-decoration:none;transition:border-color .15s}
.card-link:hover{border-color:var(--text)}
.card-link h2{margin:0}
.card-list{border-top:1px solid var(--line-soft);padding-top:12px;margin-top:4px!important}
.card-list b{color:var(--text)}
.card-go{margin-top:auto;padding-top:8px;font-weight:600;font-size:15px}
/* ---- catalogue: cards, lists, product pages ---- */
.product-grid{align-items:stretch}
.product-card{display:flex;flex-direction:column;gap:10px}
.product-card[hidden]{display:none}
.product-card h3{margin:0;font-size:1.25rem}
.product-card h3 a{text-decoration:none}
.product-card h3 a:hover{text-decoration:underline;text-underline-offset:3px}
.product-card .btns{margin-top:auto;padding-top:6px}
.pc-top{display:flex;align-items:center;gap:12px}
.pc-top .kicker{margin:0;font-size:12px}
.mono{flex:none;width:42px;height:42px;border-radius:10px;background:var(--accent);color:var(--accent-ink);display:grid;place-items:center;font:700 15px var(--font-display);letter-spacing:-.02em}
.tags{display:flex;gap:6px;flex-wrap:wrap;margin:0}
.card-list{list-style:none;padding:12px 0 0;margin:4px 0 0;border-top:1px solid var(--line-soft);display:grid;gap:6px;color:var(--text-dim);font-size:15px}
.card-list b{color:var(--text)}
.dim{color:var(--text-dimmer)}
.filters{display:grid;gap:12px;margin-top:20px}
.filters .input{max-width:420px}
.chips{display:flex;gap:8px;flex-wrap:wrap}
.chip{font:500 13px var(--font);border:1px solid var(--line);background:var(--bg);color:var(--text-dim);border-radius:999px;padding:6px 12px;cursor:pointer}
.chip[aria-pressed="true"]{background:var(--accent);color:var(--accent-ink);border-color:var(--accent)}
.cross p{color:var(--text-dim);margin:0}
.product-hero{padding-top:28px}
.crumbs{display:flex;gap:8px;flex-wrap:wrap;font-size:13px;color:var(--text-dimmer);margin-bottom:36px}
.crumbs a{color:var(--text-dim);text-decoration:none}.crumbs a:hover{color:var(--text)}
.crumbs [aria-current]{color:var(--text)}
.product-hero h1{margin-bottom:.3em}
.subnav{position:sticky;top:64px;z-index:4;background:var(--bg);border-top:1px solid var(--line-soft);border-bottom:1px solid var(--line-soft)}
.subnav .wrap{display:flex;gap:18px;align-items:center;overflow-x:auto;white-space:nowrap;min-height:46px;font-size:14px;scrollbar-width:none}
.subnav .wrap::-webkit-scrollbar{display:none}
.subnav b{font-family:var(--font-display)}
.subnav a{color:var(--text-dim);text-decoration:none}.subnav a:hover{color:var(--text)}
html{scroll-padding-top:120px}
.related{background:var(--bg-panel)}
.hp{position:absolute;left:-9999px;width:1px;height:1px;overflow:hidden}
textarea{resize:vertical}
.site-footer .foot-cols{display:grid;grid-template-columns:repeat(3,minmax(0,1fr));gap:24px}
.site-footer h4{font:600 14px var(--font);margin:0 0 10px;color:var(--text)}
.site-footer h4 a{color:var(--text);text-decoration:none}
.site-footer ul{list-style:none;padding:0;margin:0;display:grid;gap:6px}
.site-footer a{text-decoration:none}.site-footer a:hover{text-decoration:underline}
.foot-note{margin:24px 0 0;font-size:13px;color:var(--text-dimmer)}
@media (max-width:820px){.site-footer .foot-cols{grid-template-columns:1fr 1fr}.subnav{top:0}}
@media (max-width:480px){.site-footer .foot-cols{grid-template-columns:1fr}}