:root {
  --navy: #173557;
  --navy-dark: #0f2540;
  --light: #eaf0f6;
  --mid: #cbd6e2;
  --text: #2b2b2b;
  --muted: #5e5e5e;
  --accent: #2f80c0;
}
* { box-sizing: border-box; }
body {
  margin: 0;
  font-family: "Roboto", Arial, sans-serif;
  color: var(--text);
  line-height: 1.6;
  background: #fff;
}
h1, h2, h3, h4 { font-family: "Oswald", Arial, sans-serif; font-weight: 500; line-height: 1.25; margin: 0 0 .6em; }
a { color: var(--accent); }
.wrap { max-width: 1100px; margin: 0 auto; padding: 0 20px; }

/* Header */
header { background: #fff; border-bottom: 1px solid var(--mid); position: sticky; top: 0; z-index: 10; }
header .wrap { display: flex; align-items: center; justify-content: space-between; flex-wrap: wrap; gap: 10px; padding-top: 14px; padding-bottom: 14px; }
.logo { font-family: "Oswald", sans-serif; font-size: 1.5rem; color: var(--navy); text-decoration: none; letter-spacing: .5px; }
nav { display: flex; flex-wrap: wrap; gap: 6px 22px; }
nav a { color: var(--navy); text-decoration: none; font-weight: 500; font-size: .95rem; }
nav a:hover, nav a.active { color: var(--accent); }

/* Hero */
.hero { background: linear-gradient(135deg, var(--navy-dark), var(--navy) 60%, #2a5b8c); color: #fff; text-align: center; padding: 80px 0; }
.hero h1 { font-size: 2.6rem; }
.hero p { font-size: 1.2rem; max-width: 720px; margin: 0 auto 28px; opacity: .92; }

.btn { display: inline-block; background: var(--accent); color: #fff; padding: 12px 26px; border-radius: 4px; text-decoration: none; font-weight: 500; text-transform: uppercase; letter-spacing: .5px; font-size: .9rem; }
.btn:hover { background: #256aa3; }
.btn.light { background: #fff; color: var(--navy); }

/* Sections */
section { padding: 64px 0; }
section.alt { background: linear-gradient(to bottom, var(--mid), var(--light)); }
section.dark { background: var(--navy); color: #fff; }
.center { text-align: center; }
.intro { max-width: 820px; margin: 0 auto; font-size: 1.1rem; color: var(--muted); }
.section-title { text-align: center; font-size: 2rem; margin-bottom: 36px; }

.grid { display: grid; gap: 24px; grid-template-columns: repeat(auto-fit, minmax(260px, 1fr)); }
.card { background: #fff; border-radius: 6px; padding: 28px; box-shadow: 0 2px 10px rgba(0,0,0,.07); }
.card h3 { color: var(--navy); font-size: 1.35rem; }
.card p { margin: 0 0 16px; color: var(--muted); }
.dark .card { background: rgba(255,255,255,.08); box-shadow: none; }
.dark .card h3, .dark .card p { color: #fff; }

.features { max-width: 820px; margin: 0 auto; }
.feature { margin-bottom: 28px; }
.feature h3 { color: var(--navy); font-size: 1.4rem; margin-bottom: 6px; }
.feature p { margin: 0; padding-left: 20px; border-left: 3px solid var(--mid); color: var(--muted); }

.checks { list-style: none; padding: 0; display: grid; gap: 14px; grid-template-columns: repeat(auto-fit, minmax(240px, 1fr)); }
.checks li { background: rgba(255,255,255,.08); padding: 16px 18px; border-radius: 6px; }
.checks li::before { content: "✓ "; color: #7fc1ff; font-weight: bold; }

.case { max-width: 820px; margin: 0 auto; background: #fff; border-radius: 6px; padding: 32px; box-shadow: 0 2px 10px rgba(0,0,0,.07); }
.case h3 { color: var(--navy); margin-top: 18px; }
.case ul { margin: 0 0 8px; color: var(--muted); }
.highlight { font-weight: 700; color: var(--navy); }

/* Contact */
#contact { background: var(--light); }
.form-box { max-width: 640px; margin: 0 auto; background: #fff; padding: 28px; border-radius: 6px; box-shadow: 0 2px 10px rgba(0,0,0,.07); }

/* Footer */
footer { background: var(--mid); color: #595959; text-align: center; padding: 28px 0; font-size: .9rem; }
footer nav { justify-content: center; margin-top: 8px; }

@media (max-width: 640px) {
  .hero { padding: 56px 0; }
  .hero h1 { font-size: 2rem; }
  section { padding: 44px 0; }
  header .wrap { justify-content: center; }
  nav { justify-content: center; }
}

/* Contact form */
.contact-form label { display: block; font-weight: 500; color: var(--navy); font-size: .95rem; margin-bottom: 16px; }
.contact-form input, .contact-form select, .contact-form textarea { display: block; width: 100%; margin-top: 6px; padding: 10px 12px; border: 1px solid var(--mid); border-radius: 4px; font: inherit; color: var(--text); background: #fff; }
.contact-form input:focus, .contact-form select:focus, .contact-form textarea:focus { outline: 2px solid var(--accent); border-color: var(--accent); }
.contact-form .row2 { display: grid; grid-template-columns: 1fr 1fr; gap: 0 16px; }
.contact-form button { border: 0; cursor: pointer; }
.contact-form button:disabled { opacity: .6; cursor: default; }
.form-status { margin: 14px 0 0; font-weight: 500; }
.form-status.ok { color: #1e7a3c; }
.form-status.err { color: #b3261e; }
@media (max-width: 640px) { .contact-form .row2 { grid-template-columns: 1fr; } }