/* Modern SaaS FR (AA) */
:root{--bg:#f8fafc;--surface:#fff;--ink:#0f172a;--muted:#475569;--brand:#2563eb;--brand2:#60a5fa;--ring:#93c5fd;--radius:1rem;--shadow:0 6px 18px rgba(15,23,42,.08);--gap:clamp(.75rem,2vw,1.25rem)}
*{box-sizing:border-box}body{margin:0;background:var(--bg);color:var(--ink);font:16px/1.6 system-ui,-apple-system,Segoe UI,Roboto,Ubuntu,Arial,sans-serif}
a{color:var(--brand);text-decoration:underline;text-underline-offset:.2em}
img{max-width:100%;display:block}.container{width:min(1100px,92%);margin-inline:auto}
.section{padding:clamp(2rem,5vw,4rem) 0}.lead{color:var(--muted)}.card{background:var(--surface);border-radius:var(--radius);box-shadow:var(--shadow);padding:clamp(1rem,2.5vw,1.5rem)}
.grid-3{display:grid;grid-template-columns:1fr;gap:var(--gap)}@media(min-width:720px){.grid-3{grid-template-columns:repeat(3,1fr)}}
.btn{display:inline-block;border:1px solid var(--brand);padding:.7rem 1rem;border-radius:.75rem;text-decoration:none;font-weight:600;transition:transform .15s ease,opacity .15s}.btn:hover{transform:translateY(-1px)}.btn.primary{background:var(--brand);color:#fff}.btn.outline{background:#fff}
.site-header{position:sticky;top:0;backdrop-filter:saturate(150%) blur(8px);background:rgba(248,250,252,.7);border-bottom:1px solid #e5e7eb;z-index:50}
.header-inner{display:flex;align-items:center;justify-content:space-between;padding:.6rem 0}.logo{display:flex;gap:.6rem;align-items:center;text-decoration:none}.logo-mark{width:28px;height:28px;display:grid;place-items:center;border-radius:8px;background:linear-gradient(135deg,var(--brand),var(--brand2));color:#fff;font-weight:700}.logo-text{font-weight:800}
.site-nav{display:flex;align-items:center;gap:1rem}.site-nav .burger{display:inline-flex;align-items:center;justify-content:center;width:42px;height:42px;border-radius:10px;border:1px solid #e5e7eb;background:#fff}
.site-nav ul{list-style:none;margin:0;padding:0;display:none;position:absolute;right:4%;top:60px;background:#fff;border:1px solid #e5e7eb;border-radius:.75rem;box-shadow:var(--shadow)}.site-nav ul.open{display:block}
.site-nav a{display:block;padding:.75rem 1rem;text-decoration:none;color:var(--ink)}.site-nav a.active{background:#eff6ff}@media(min-width:900px){.site-nav .burger{display:none}.site-nav ul{display:flex;position:static;background:transparent;border:0;box-shadow:none}.site-nav a{padding:.35rem .6rem;border-radius:.5rem}.site-nav a.active{background:#e2e8f0}}
.hero{padding:clamp(2rem,7vw,5rem) 0}.hero-inner{display:grid;grid-template-columns:1fr;gap:var(--gap);align-items:center}@media(min-width:900px){.hero-inner{grid-template-columns:1.05fr .95fr}}.hero-text h1{font-size:clamp(1.6rem,4.5vw,2.4rem);line-height:1.2;margin:.2rem 0 .5rem}
.about-inner{display:grid;gap:var(--gap)}@media(min-width:900px){.about-inner{grid-template-columns:1.2fr .8fr;align-items:center}}.keyboard :focus{outline:3px solid var(--ring);outline-offset:2px}
.banner.warn{background:#fff7ed;border-block:1px solid #ffedd5}.audit table{width:100%;border-collapse:collapse}.audit th,.audit td{border:1px solid #e5e7eb;padding:.5rem .6rem;text-align:left}.audit th{background:#f1f5f9}
.stack{display:grid;gap:.75rem}
input,button{font:inherit}
input{width:100%;padding:.65rem .7rem;border:1px solid #cbd5e1;border-radius:.6rem;background:#fff}
button{cursor:pointer}