* {
  box-sizing: border-box;
}

body {
  margin: 0;
  font-family: Tahoma, Arial;
  background: #ffffff;
  color: #1f2937;
}

/* HEADER */
.main-header {
  background: #020617;
  padding: 18px 0;
}

.header-container {
  width: 90%;
  margin: auto;
  display: flex;
  justify-content: space-between;
  align-items: center;
}

/* BRAND */
.brand {
  display: flex;
  align-items: center;
  gap: 16px;
}

.brand img {
  height: 80px;
}

.brand-text {
  display: flex;
  flex-direction: column;
}

.brand-name {
  color: #ffffff;
  font-size: 26px;
  font-weight: bold;
  letter-spacing: 1px;
}

.brand-slogan {
  color: #94a3b8;
  font-size: 13px;
}

/* NAV */
.nav a {
  color: #ffffff;
  margin-right: 18px;
  text-decoration: none;
  font-size: 15px;
}

.nav a:hover {
  color: #38bdf8;
}

/* HERO */
.hero {
  background: linear-gradient(135deg,#2563eb,#1e3a8a);
  color: #ffffff;
  text-align: center;
  padding: 90px 20px;
}

.hero h1 {
  font-size: 32px;
}

.hero p {
  margin: 15px 0 25px;
}

.btn {
  background: #22c55e;
  color: #ffffff;
  padding: 14px 30px;
  border-radius: 6px;
  text-decoration: none;
}

/* SECTIONS */
.section {
  padding: 70px 20px;
  text-align: center;
}

.gray {
  background: #f1f5f9;
}

.grid {
  display: grid;
  grid-template-columns: repeat(auto-fit,minmax(220px,1fr));
  gap: 20px;
}

.card {
  background: #ffffff;
  padding: 25px;
  border-radius: 12px;
  box-shadow: 0 10px 25px rgba(0,0,0,.08);
}

.muted {
  color: #64748b;
  font-size: 14px;
}

.contact-grid {
  width: 90%;
  margin: 30px auto 0;
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: 20px;
  text-align: right;
}

.contact-card {
  background: #ffffff;
  padding: 25px;
  border-radius: 12px;
  box-shadow: 0 10px 25px rgba(0,0,0,.08);
}

.contact-card h3 {
  margin: 0 0 8px;
}

.lead-form {
  margin-top: 16px;
  display: grid;
  gap: 12px;
}

.field label {
  display: block;
  margin-bottom: 6px;
  font-size: 14px;
  color: #0f172a;
}

.field input,
.field textarea {
  width: 100%;
  padding: 12px 12px;
  border: 1px solid #e2e8f0;
  border-radius: 10px;
  outline: none;
  font-family: inherit;
  font-size: 14px;
}

.field input:focus,
.field textarea:focus {
  border-color: #93c5fd;
  box-shadow: 0 0 0 3px rgba(59, 130, 246, .15);
}

.btn.btn-block {
  width: 100%;
  border: 0;
  cursor: pointer;
}

.form-msg {
  font-size: 14px;
  min-height: 18px;
}

.form-msg.ok { color: #16a34a; }
.form-msg.err { color: #dc2626; }

.systems {
  list-style: none;
  padding: 0;
}

.systems li {
  margin-bottom: 10px;
}

/* FOOTER */
footer {
  background: #020617;
  color: #ffffff;
  text-align: center;
  padding: 15px;
}

/* MOBILE */
@media (max-width: 768px) {
  .header-container {
    flex-direction: column;
    gap: 15px;
  }

  .brand img {
    height: 100px;
  }

  .nav a {
    margin-right: 10px;
  }

  .contact-grid {
    grid-template-columns: 1fr;
    width: 92%;
  }
}