:root{--ink:#17233b;--accent:#244ac4;--muted:#49566d;--line:#d9e0eb;--paper:#f5f7fb}
*{box-sizing:border-box}
body{margin:0;background:var(--paper);color:var(--ink);font:1rem/1.75 Tahoma,Arial,sans-serif}
.wrap{width:min(70rem,100% - 2rem);margin-inline:auto}
a{color:var(--accent)}
:focus-visible{outline:3px solid var(--accent);outline-offset:4px}
.skip{position:absolute;inset-inline-start:1rem;inset-block-start:-6rem;background:white;padding:.75rem;z-index:3}
.skip:focus{inset-block-start:1rem}
.header{background:white;border-block-end:1px solid var(--line)}
.bar{display:flex;align-items:center;justify-content:space-between;flex-wrap:wrap;gap:.65rem;padding-block:.7rem}
.brand{display:inline-flex;align-items:center;gap:.65rem;color:var(--ink);font-weight:bold;text-decoration:none}
.brand span{display:grid;place-items:center;border-radius:.65rem;background:var(--accent);color:white;width:2.55rem;height:2.55rem}
nav{display:flex;gap:.3rem;flex-wrap:wrap}
nav a{padding:.5rem .7rem;color:var(--ink);text-decoration:none;min-block-size:44px}
nav a[aria-current]{border-radius:.5rem;background:#e9edff;color:var(--accent);font-weight:bold}
.hero{display:grid;grid-template-columns:1.1fr 1fr;gap:2rem;align-items:center;padding-block:clamp(2.3rem,7vw,6rem)}
.hero img,.card img{display:block;width:100%;height:auto;object-fit:cover}
.hero img{border-radius:1.4rem}
h1,h2,h3,p{margin:0}
h1{font-size:clamp(2.1rem,5.6vw,4.5rem);line-height:1.15}
h1 span{display:block;color:var(--accent);font-size:.62em;margin-block-start:.55rem}
.lead{color:var(--muted);margin-block:1rem 1.4rem;max-inline-size:35rem}
.tag{color:var(--accent);font-size:.87rem;font-weight:bold;margin-block-end:.5rem}
.button{display:inline-flex;gap:.65rem;align-items:center;min-block-size:46px;padding:.55rem 1.05rem;background:var(--accent);color:white;border-radius:.55rem;text-decoration:none;font-weight:bold}
.button:hover,.text-link:hover{text-decoration:underline}
.section{padding-block:1rem 3rem}
.section-title{margin-block-end:1.2rem}
.intro{padding-block:clamp(2rem,6vw,4rem) 1.2rem}
.grid{display:grid;grid-template-columns:repeat(3,minmax(0,1fr));gap:1rem;margin-block-end:2rem}
.card,.demos article,.contact-box{background:white;border:1px solid var(--line);border-radius:1rem;overflow:hidden}
.card:target,.demos article:target{outline:3px solid var(--accent);outline-offset:3px}
.card-text,.demos article,.contact-box{padding:1rem}
.card-text h2{font-size:1.22rem;margin-block-end:.5rem}
.card-text p,.contact-box p{color:var(--muted)}
.card-text .tag{color:var(--accent)}
.meta{font-size:.82rem;margin-block-start:.65rem}
.text-link{display:inline-flex;align-items:center;gap:.35rem;min-block-size:44px;font-weight:bold}
.demos{display:grid;grid-template-columns:repeat(2,minmax(0,1fr));gap:1rem}
fieldset{border:0;padding:0;margin:0}
fieldset label{display:block}
input{accent-color:var(--accent)}
.contact-box{margin-block-end:3rem}
.contact-box p{margin-block:.5rem 1rem}
footer{border-block-start:1px solid var(--line);color:var(--muted);background:white}
@media(max-width:800px){.grid{grid-template-columns:repeat(2,minmax(0,1fr))}}
@media(max-width:580px){.hero,.grid,.demos{grid-template-columns:1fr}.hero{gap:1.25rem}}