/* Design layer (DESIGN.md). Loaded after the other stylesheets: it sets the type
   system and tokens, the hero and the header, without touching component logic. */
@font-face{font-family:"Geist";src:url("fonts/Geist-Variable.woff2") format("woff2");font-weight:100 900;font-style:normal;font-display:swap}
@font-face{font-family:"Geist Mono";src:url("fonts/GeistMono-Variable.woff2") format("woff2");font-weight:100 900;font-style:normal;font-display:swap}

:root{
 --font-sans:"Geist",system-ui,-apple-system,"Segoe UI","Hiragino Sans","PingFang SC","Noto Sans CJK SC",sans-serif;
 --font-mono:"Geist Mono",ui-monospace,SFMono-Regular,Menlo,monospace;
 --bg:#f6f8f7;--surface:#fff;--ink:#14201c;--muted:#56645f;--border:#dbe3df;--soft:#eef3f0;
 --accent:#136653;--accent-soft:#e6f2ec;--refuse:#9c3530;
 font-family:var(--font-sans);color:var(--ink);background:var(--bg);line-height:1.6;
 font-feature-settings:"ss01","cv11";
}
body{background:var(--bg);-webkit-font-smoothing:antialiased;-moz-osx-font-smoothing:grayscale}
code,kbd,samp,pre,textarea#urls,.stage-file,.seg,.lane b,.use-cases dt::before,.deliverables li::before,.timeline li b{font-family:var(--font-mono)}
.result-table,.file-meta,.stage-bytes,.facts{font-variant-numeric:tabular-nums}

/* Header: quieter chrome so the instrument leads. */
header{background:rgba(255,255,255,.86);backdrop-filter:saturate(1.4) blur(10px);-webkit-backdrop-filter:saturate(1.4) blur(10px);position:sticky;top:0;z-index:20;min-height:64px}
.brand{letter-spacing:.01em}
.brand-mark{border-radius:6px}
.site-nav a{font-weight:500}
.site-nav .feedback-link{border:0;padding:0;color:var(--muted)}
.site-nav .feedback-link:hover{color:var(--accent)}
.language-control{font-size:0;gap:0;position:relative}.language-control::before{content:"";position:absolute;left:10px;top:50%;width:16px;height:16px;margin-top:-8px;background:var(--muted);-webkit-mask:url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' viewBox='0 0 24 24' fill='none' stroke='black' stroke-width='1.8' stroke-linecap='round' stroke-linejoin='round'%3E%3Ccircle cx='12' cy='12' r='9'/%3E%3Cpath d='M3 12h18M12 3c2.5 2.7 3.8 5.7 3.8 9s-1.3 6.3-3.8 9c-2.5-2.7-3.8-5.7-3.8-9S9.5 5.7 12 3z'/%3E%3C/svg%3E") center/contain no-repeat;mask:url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' viewBox='0 0 24 24' fill='none' stroke='black' stroke-width='1.8' stroke-linecap='round' stroke-linejoin='round'%3E%3Ccircle cx='12' cy='12' r='9'/%3E%3Cpath d='M3 12h18M12 3c2.5 2.7 3.8 5.7 3.8 9s-1.3 6.3-3.8 9c-2.5-2.7-3.8-5.7-3.8-9S9.5 5.7 12 3z'/%3E%3C/svg%3E") center/contain no-repeat;pointer-events:none}.language-control:hover::before,.language-control:focus-within::before{background:var(--accent)}.language-control select{padding-left:34px!important}
.language-control select{font-size:14px;min-height:34px;padding:5px 26px 5px 10px;border-radius:6px;border-color:var(--border);color:var(--ink)}

/* Type scale. */
h1{font-size:clamp(34px,4.6vw,58px);line-height:1.05;letter-spacing:-.035em;font-weight:600;margin:0 0 18px;text-wrap:balance}
h2{font-size:20px;line-height:1.3;letter-spacing:-.01em;font-weight:600}
p{text-wrap:pretty}
.commerce h1{font-size:clamp(32px,4vw,50px)}

/* Hero. */
main{padding-top:56px}
.intro{margin-bottom:40px;max-width:900px}
.eyebrow{margin:0 0 16px;font-size:13px;font-weight:500;letter-spacing:.02em;color:var(--accent);display:flex;flex-wrap:wrap;gap:6px 14px}
.eyebrow span{display:inline-flex;align-items:center;gap:14px}
.eyebrow span+span::before{content:"";width:4px;height:4px;border-radius:50%;background:currentColor;opacity:.45}
.intro .lede{font-size:clamp(17px,1.6vw,19px);line-height:1.55;color:var(--muted);max-width:66ch}
.intro .intro-context{font-size:14px;max-width:72ch;margin-top:10px}
.facts{list-style:none;margin:26px 0 0;padding:0;display:flex;flex-wrap:wrap;gap:0;font-size:13px;color:var(--muted);border-top:1px solid var(--border)}
.facts li{display:flex;align-items:center;gap:8px;padding:12px 18px 0 0;margin-right:18px}
.facts li+li{border-left:1px solid var(--border);padding-left:18px}
.facts a{color:var(--ink);text-decoration:none;font-weight:500}
.facts a:hover{color:var(--accent);text-decoration:underline}
.facts code{font-size:12px;color:var(--muted)}
.facts svg{width:14px;height:14px;flex:none;color:var(--accent)}

/* Panels: tighter radius system and tinted depth. */
.checker{border-radius:10px;border-color:var(--border);box-shadow:0 1px 0 rgba(13,29,25,.04),0 18px 40px -32px rgba(13,29,25,.35)}
input,textarea,select{border-radius:6px}
button{border-radius:6px}
.scan-stage{border-radius:12px}

@media(max-width:600px){
 main{padding-top:32px}
 .intro{margin-bottom:28px}
 .facts{display:grid;grid-template-columns:1fr;border-top:0}
 .facts li,.facts li+li{border-left:0;margin:0;padding:10px 0;border-top:1px solid var(--border)}
 header{position:static;flex-wrap:wrap;row-gap:10px}
 header .brand{order:1}
 header .language-control{order:2;width:auto;margin-left:auto}
 header .language-control select{min-height:32px;max-width:150px}
 header .site-nav{order:3;width:100%;gap:6px 16px;font-size:15px}
}
footer .privacy-note{color:var(--muted);font-size:13px;margin-right:auto;padding-left:12px}
@media(max-width:600px){footer .privacy-note{padding-left:0;display:block;width:100%}}