:root {
  --sab-blue: #004481;
  --sab-blue-dark: #00305a;
  --sab-blue-light: #0073cf;
  --sab-cyan: #49a5e6;
  --sab-accent: #d52b1e;
  --ink: #1a2733;
  --muted: #5b6b7a;
  --line: #e3e8ee;
  --bg: #f5f7fa;
  --white: #ffffff;
  --radius: 12px;
  --shadow: 0 8px 30px rgba(0, 48, 90, 0.12);
}

* { box-sizing: border-box; margin: 0; padding: 0; }

body {
  font-family: "Inter", -apple-system, BlinkMacSystemFont, "Segoe UI", sans-serif;
  color: var(--ink);
  background: var(--bg);
  line-height: 1.55;
}

.container {
  width: 100%;
  max-width: 1180px;
  margin: 0 auto;
  padding: 0 24px;
}

a { text-decoration: none; color: inherit; }

/* DEMO BANNER */
.demo-banner {
  background: #fff4e5;
  color: #8a5300;
  text-align: center;
  font-size: 13px;
  font-weight: 600;
  padding: 8px 16px;
  border-bottom: 1px solid #ffe0b2;
}

/* HEADER */
.site-header {
  background: var(--white);
  border-bottom: 1px solid var(--line);
  position: sticky;
  top: 0;
  z-index: 50;
}
.header-inner {
  display: flex;
  align-items: center;
  justify-content: space-between;
  height: 70px;
  gap: 24px;
}
.logo { display: flex; align-items: center; gap: 10px; }
.logo-mark {
  width: 30px; height: 30px;
  border-radius: 50%;
  background: conic-gradient(from 180deg, var(--sab-blue), var(--sab-cyan), var(--sab-blue));
}
.logo-text { font-size: 20px; font-weight: 800; color: var(--sab-blue); letter-spacing: -0.5px; }
.logo-accent { color: var(--sab-accent); }

.main-nav { display: flex; gap: 28px; flex: 1; }
.main-nav a { font-size: 15px; font-weight: 500; color: var(--ink); transition: color .15s; }
.main-nav a:hover { color: var(--sab-blue-light); }

.header-actions { display: flex; gap: 12px; align-items: center; }

/* BUTTONS */
.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  font-weight: 600;
  font-size: 15px;
  padding: 10px 20px;
  border-radius: 8px;
  border: 1px solid transparent;
  cursor: pointer;
  transition: all .15s ease;
}
.btn-primary { background: var(--sab-blue); color: #fff; }
.btn-primary:hover { background: var(--sab-blue-dark); }
.btn-ghost { color: var(--sab-blue); }
.btn-ghost:hover { background: #eef4fb; }
.btn-outline { background: transparent; border-color: var(--sab-blue); color: var(--sab-blue); }
.btn-outline:hover { background: var(--sab-blue); color: #fff; }
.btn-light { background: #fff; color: var(--sab-blue); }
.btn-light:hover { background: #eef4fb; }
.btn-lg { padding: 14px 28px; font-size: 16px; }
.btn-block { width: 100%; }

/* HERO */
.hero {
  background: linear-gradient(135deg, var(--sab-blue) 0%, var(--sab-blue-dark) 60%, #001f3d 100%);
  color: #fff;
  padding: 70px 0 90px;
}
.hero-inner {
  display: grid;
  grid-template-columns: 1.2fr 0.8fr;
  gap: 60px;
  align-items: center;
}
.hero-eyebrow {
  display: inline-block;
  background: rgba(255,255,255,.15);
  padding: 6px 14px;
  border-radius: 999px;
  font-size: 13px;
  font-weight: 600;
  margin-bottom: 18px;
}
.hero-copy h1 { font-size: 46px; line-height: 1.1; font-weight: 800; letter-spacing: -1px; margin-bottom: 18px; }
.hero-copy > p { font-size: 18px; color: #d6e4f2; max-width: 520px; margin-bottom: 28px; }
.hero-cta { display: flex; gap: 14px; flex-wrap: wrap; margin-bottom: 26px; }
.hero-cta .btn-outline { border-color: rgba(255,255,255,.6); color: #fff; }
.hero-cta .btn-outline:hover { background: #fff; color: var(--sab-blue); }
.hero-points { list-style: none; display: flex; gap: 22px; flex-wrap: wrap; font-size: 15px; color: #cfe1f2; }

/* LOGIN CARD */
.login-card {
  background: #fff;
  color: var(--ink);
  border-radius: var(--radius);
  padding: 32px;
  box-shadow: var(--shadow);
}
.login-card h2 { font-size: 22px; margin-bottom: 22px; color: var(--sab-blue); }
.login-card label { display: block; font-size: 14px; font-weight: 600; margin-bottom: 16px; color: var(--muted); }
.login-card input {
  width: 100%;
  margin-top: 6px;
  padding: 12px 14px;
  border: 1px solid var(--line);
  border-radius: 8px;
  font-size: 15px;
  font-family: inherit;
}
.login-card input:focus { outline: none; border-color: var(--sab-blue-light); box-shadow: 0 0 0 3px rgba(0,115,207,.15); }
.login-links { display: flex; justify-content: space-between; margin-top: 16px; font-size: 14px; }
.login-links a { color: var(--sab-blue-light); font-weight: 500; }
.login-note { margin-top: 18px; font-size: 12px; color: var(--muted); text-align: center; }

/* PRODUCTS */
.products { padding: 80px 0; }
.section-title { text-align: center; font-size: 32px; font-weight: 800; color: var(--ink); margin-bottom: 44px; letter-spacing: -0.5px; }
.card-grid { display: grid; grid-template-columns: repeat(4, 1fr); gap: 24px; }
.product-card {
  background: #fff;
  border: 1px solid var(--line);
  border-radius: var(--radius);
  padding: 28px 24px;
  transition: transform .18s, box-shadow .18s;
}
.product-card:hover { transform: translateY(-4px); box-shadow: var(--shadow); }
.product-icon { font-size: 32px; margin-bottom: 14px; }
.product-card h3 { font-size: 18px; margin-bottom: 10px; color: var(--sab-blue); }
.product-card p { font-size: 14px; color: var(--muted); margin-bottom: 16px; }
.card-link { font-size: 14px; font-weight: 600; color: var(--sab-blue-light); }

/* CTA BAND */
.cta-band { background: var(--sab-blue); color: #fff; padding: 56px 0; }
.cta-band-inner { display: flex; align-items: center; justify-content: space-between; gap: 30px; flex-wrap: wrap; }
.cta-band h2 { font-size: 26px; margin-bottom: 8px; }
.cta-band p { color: #d6e4f2; max-width: 560px; }

/* FOOTER */
.site-footer { background: var(--sab-blue-dark); color: #c7d6e6; padding: 56px 0 24px; font-size: 14px; }
.footer-grid { display: grid; grid-template-columns: 2fr 1fr 1fr 1fr; gap: 32px; }
.footer-logo { color: #fff; display: block; margin-bottom: 12px; }
.footer-disclaimer { font-size: 13px; color: #9fb6cc; max-width: 320px; }
.footer-grid h4 { color: #fff; font-size: 15px; margin-bottom: 14px; }
.footer-grid a { display: block; color: #c7d6e6; margin-bottom: 8px; transition: color .15s; }
.footer-grid a:hover { color: #fff; }
.footer-bottom { border-top: 1px solid rgba(255,255,255,.12); margin-top: 36px; padding-top: 20px; font-size: 13px; color: #9fb6cc; }

/* RESPONSIVE */
@media (max-width: 900px) {
  .main-nav { display: none; }
  .hero-inner { grid-template-columns: 1fr; gap: 40px; }
  .hero-copy h1 { font-size: 36px; }
  .card-grid { grid-template-columns: repeat(2, 1fr); }
  .footer-grid { grid-template-columns: 1fr 1fr; }
}
@media (max-width: 540px) {
  .card-grid { grid-template-columns: 1fr; }
  .header-actions .btn-ghost { display: none; }
  .hero-copy h1 { font-size: 30px; }
}