/* Colors injected from site.config.json as CSS variables in <head>. */
*,*::before,*::after{box-sizing:border-box}
body{margin:0;font-family:system-ui,-apple-system,"Segoe UI",Roboto,Arial,sans-serif;color:var(--text);background:var(--bg);line-height:1.6}
a{color:var(--primary)}
.skip-link{position:absolute;left:-9999px}.skip-link:focus{left:8px;top:8px;background:#fff;padding:8px}
.site-header{background:#fff;border-bottom:1px solid #e2e8f0;height:60px}
.header-inner,.main,.site-footer{max-width:760px;margin:0 auto;padding:0 16px}
.header-inner{display:flex;align-items:center;justify-content:space-between;height:60px;gap:12px}
.logo{font-weight:800;font-size:1.2rem;text-decoration:none;color:var(--primary)}
.site-nav{display:flex;gap:14px;flex-wrap:wrap}.site-nav a{text-decoration:none;color:var(--text)}
.main{padding-top:24px;padding-bottom:40px}
.card{background:#fff;border:1px solid #e2e8f0;border-radius:16px;padding:20px;margin:0 0 20px}
.hero h1{margin:0 0 4px}.lead{color:var(--muted);margin-top:0}
.tool-form{display:grid;grid-template-columns:1fr 1fr;gap:12px}
.tool-form input{width:100%;padding:10px;border:1px solid #cbd5e1;border-radius:10px;font:inherit}
.result{display:block;min-height:2.4em;margin-top:14px;font-size:1.4rem;font-weight:700;color:var(--accent)}
.site-footer{color:var(--muted);font-size:.9rem;padding-bottom:32px}.site-footer a{color:var(--muted)}
details{border-top:1px solid #e2e8f0;padding:10px 0}summary{cursor:pointer;font-weight:600}