:root{
  --blue:#4F73FF;
  --blue-600:#3d5de0;
  --ink:#111317;
  --text:#1E2026;
  --muted:#6B7280;
  --border:#E5E7EB;
  --bg:#FFFFFF;
  --bg-soft:#F7F9FC;
}
*{box-sizing:border-box} html,body{margin:0}
body{font-family:'Inter',system-ui,-apple-system,Segoe UI,Roboto,Helvetica,Arial,sans-serif;color:var(--text);background:var(--bg);line-height:1.55;-webkit-font-smoothing:antialiased;text-rendering:optimizeLegibility}
.container{width:min(1120px,92%);margin-inline:auto}

.header{position:sticky;top:0;z-index:50;background:rgba(255,255,255,.9);backdrop-filter:saturate(180%) blur(10px);border-bottom:1px solid var(--border)}
.header.scrolled{box-shadow:0 2px 14px rgba(0,0,0,.06)}
.header__inner{display:flex;align-items:center;justify-content:flex-start;padding:12px 0}
.brand__logo{height:32px;width:auto}
.brand__logo--dark{display:none}

.hero{padding:96px 0 48px}
.hero__inner{display:grid;grid-template-columns:1.1fr .9fr;gap:28px;align-items:center}
.kicker{color:var(--blue);font-weight:600;letter-spacing:.04em;text-transform:uppercase;margin:0 0 8px}
h1{font-size:clamp(34px,5vw,56px);line-height:1.1;margin:0 0 14px;color:var(--ink)}
.lede{color:var(--muted);font-size:18px;max-width:640px;margin:0 0 18px}

.form{display:grid;grid-template-columns:1fr auto;gap:10px;align-items:start;margin-top:8px;max-width:560px}
.form input[type="email"]{padding:14px 16px;border-radius:12px;border:1.5px solid var(--border);font-size:16px}
.captcha{grid-column:1/-1;margin:4px 0 4px}
.btn{display:inline-block;font-weight:700;border-radius:12px;padding:12px 18px;transition:transform .1s ease, background .2s,border .2s}
.btn--primary{background:var(--blue);color:#fff;border:2px solid var(--blue)}
.btn:hover{transform:translateY(-1px)}
.note{color:var(--muted);font-size:14px;margin-top:10px}

.hero__visual{display:flex;align-items:center;justify-content:center}
.hero-diagram{width:100%;max-width:560px;height:auto;border-radius:20px;display:block;box-shadow:0 10px 24px rgba(31,41,55,.08)}

.teaser{padding:36px 0 72px;background:var(--bg-soft);border-top:1px solid var(--border)}
.teaser h2{margin:0 0 14px;font-size:22px;color:var(--ink)}
.cards{display:grid;grid-template-columns:repeat(auto-fit,minmax(220px,1fr));gap:14px}
.card{border:1px solid var(--border);border-radius:14px;background:#fff;padding:16px}
.card .icon{font-size:22px;margin-bottom:6px}
.card h3{margin:0 0 6px;font-size:18px}
.card p{margin:0;color:var(--muted)}

.footer{border-top:1px solid var(--border);background:#fafafa}
.footer__inner{display:flex;align-items:center;justify-content:space-between;gap:12px;padding:18px 0}
.mailto{font-weight:600;color:var(--blue);text-decoration:none}
.mailto:hover{text-decoration:underline}

@media (max-width: 960px){
  .hero__inner{grid-template-columns:1fr}
  .hero-diagram{max-width:100%}
}


/* v10.4: refined form alignment & CTA */
.visually-hidden{position:absolute !important;left:-9999px;top:auto;width:1px;height:1px;overflow:hidden}
.form{display:grid;grid-template-columns:1fr auto;gap:12px;align-items:center;max-width:640px;margin-top:12px}
.form input[type="email"]{padding:14px 16px;border-radius:12px;border:1.5px solid var(--border);font-size:16px;min-width:260px}
.btn{white-space:nowrap;padding:14px 18px}
.captcha{grid-column:1/-1;margin-top:8px}

@media (max-width: 640px){
  .form{grid-template-columns:1fr}
  .btn{width:100%}
}