:root {
  --navy: #050c1a;
  --navy-2: #0a1830;
  --blue: #2e90fa;
  --blue-light: #6db8ff;
  --text-light: #eaf2ff;
  --muted-light: #a9bdda;
  --bg-light: #f4f7fb;
  --text-dark: #0f1b2d;
  --muted-dark: #5b6b85;
  --border-light: #dbe4f0;
  --card-bg: #ffffff;
}

* {
  box-sizing: border-box;
}

body {
  margin: 0;
  font-family: "Segoe UI", Arial, Helvetica, sans-serif;
  background: var(--bg-light);
  color: var(--text-dark);
}

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

/* Header */
.site-header {
  background: var(--navy);
  padding: 22px 6vw;
  display: flex;
  align-items: center;
  justify-content: space-between;
  flex-wrap: wrap;
  gap: 16px;
}

.logo {
  display: flex;
  align-items: center;
  gap: 10px;
  font-size: 1.4rem;
  font-weight: 800;
  letter-spacing: 1px;
  color: var(--text-light);
}

.logo .mark {
  width: 32px;
  height: 32px;
  flex-shrink: 0;
}

.logo span.accent {
  color: var(--blue);
}

.nav-links {
  display: flex;
  gap: 34px;
  font-weight: 600;
  letter-spacing: 0.5px;
  font-size: 0.9rem;
}

.nav-links a {
  color: var(--muted-light);
  padding-bottom: 6px;
  border-bottom: 2px solid transparent;
  transition: color 0.2s ease, border-color 0.2s ease;
}

.nav-links a:hover {
  color: var(--text-light);
}

.nav-links a.active {
  color: var(--blue-light);
  border-bottom-color: var(--blue);
}

/* Hero (home) */
.hero {
  background: linear-gradient(135deg, #061024 0%, #0a1e3f 100%);
  color: var(--text-light);
  padding: 90px 6vw 100px;
  display: flex;
  align-items: center;
  gap: 60px;
  flex-wrap: wrap;
}

.hero-content {
  flex: 1 1 420px;
}

.hero h1 {
  font-size: 3.4rem;
  font-weight: 900;
  margin: 0 0 6px;
  line-height: 1.05;
  letter-spacing: 1px;
}

.hero h1 .accent {
  color: var(--blue);
}

.tagline {
  color: var(--blue-light);
  letter-spacing: 4px;
  font-weight: 600;
  margin: 10px 0 22px;
  font-size: 0.95rem;
}

.hero-divider {
  width: 60px;
  height: 3px;
  background: var(--blue);
  margin-bottom: 22px;
}

.hero p.desc {
  color: var(--muted-light);
  font-size: 1.15rem;
  line-height: 1.6;
  max-width: 420px;
  margin-bottom: 34px;
}

.btn-row {
  display: flex;
  gap: 16px;
  flex-wrap: wrap;
}

.btn {
  display: inline-flex;
  align-items: center;
  gap: 10px;
  padding: 16px 26px;
  border-radius: 8px;
  font-weight: 700;
  font-size: 0.95rem;
  letter-spacing: 0.5px;
  cursor: pointer;
  border: 2px solid transparent;
  transition: transform 0.15s ease, opacity 0.15s ease;
}

.btn:hover {
  transform: translateY(-2px);
}

.btn-primary {
  background: var(--blue);
  color: #051022;
}

.btn-outline {
  background: transparent;
  border-color: var(--blue-light);
  color: var(--text-light);
}

.hero-visual {
  flex: 1 1 320px;
  display: flex;
  justify-content: center;
  align-items: center;
  min-height: 260px;
}

.hero-visual svg {
  max-width: 100%;
  height: auto;
}

/* Info section */
.info-section {
  padding: 80px 6vw;
  text-align: center;
}

.icon-badge {
  width: 70px;
  height: 70px;
  border-radius: 50%;
  background: #e5f0ff;
  display: flex;
  align-items: center;
  justify-content: center;
  margin: 0 auto 24px;
  color: var(--blue);
}

.info-section h2 {
  font-size: 2rem;
  font-weight: 800;
  margin: 0 0 16px;
  letter-spacing: 0.5px;
}

.section-divider {
  width: 50px;
  height: 3px;
  background: var(--blue);
  margin: 0 auto 26px;
}

.info-section p.lead {
  max-width: 720px;
  margin: 0 auto 50px;
  color: var(--muted-dark);
  font-size: 1.1rem;
  line-height: 1.7;
}

.feature-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(180px, 1fr));
  gap: 30px;
  max-width: 1000px;
  margin: 0 auto 50px;
}

.feature {
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 12px;
}

.feature svg {
  color: var(--blue);
  width: 34px;
  height: 34px;
}

.feature h3 {
  font-size: 0.95rem;
  font-weight: 800;
  letter-spacing: 0.5px;
  margin: 0;
}

.feature p {
  color: var(--muted-dark);
  font-size: 0.9rem;
  margin: 0;
  max-width: 210px;
}

.notice-box {
  max-width: 760px;
  margin: 0 auto;
  background: #e9f2ff;
  border: 1px solid #cfe2fb;
  border-radius: 10px;
  padding: 26px 30px;
  display: flex;
  gap: 18px;
  align-items: flex-start;
  text-align: left;
}

.notice-box svg {
  color: var(--blue);
  flex-shrink: 0;
  margin-top: 2px;
}

.notice-box h4 {
  margin: 0 0 6px;
  font-size: 1rem;
  letter-spacing: 0.5px;
}

.notice-box p {
  margin: 0;
  color: var(--muted-dark);
  font-size: 0.92rem;
  line-height: 1.5;
}

/* Footer */
.site-footer {
  background: var(--navy);
  color: var(--muted-light);
  padding: 40px 6vw;
  display: flex;
  justify-content: center;
  gap: 70px;
  flex-wrap: wrap;
  text-align: left;
}

.footer-item {
  display: flex;
  gap: 14px;
  align-items: flex-start;
}

.footer-item svg {
  color: var(--blue);
  flex-shrink: 0;
}

.footer-item strong {
  display: block;
  color: var(--text-light);
  font-size: 0.9rem;
  letter-spacing: 0.5px;
}

.footer-item span {
  font-size: 0.85rem;
}

/* Page header banner (catalog / contact) */
.page-banner {
  background: linear-gradient(135deg, #061024 0%, #0a1e3f 100%);
  color: var(--text-light);
  padding: 60px 6vw 50px;
  text-align: center;
}

.page-banner h1 {
  font-size: 2.4rem;
  font-weight: 900;
  margin: 0 0 10px;
  letter-spacing: 0.5px;
}

.page-banner p {
  color: var(--muted-light);
  font-size: 1.05rem;
  max-width: 560px;
  margin: 0 auto;
}

.page-banner p a {
  color: var(--blue-light);
  font-weight: 700;
}

/* Catalog */
.catalog-wrap {
  padding: 50px 6vw 90px;
  max-width: 1200px;
  margin: 0 auto;
}

.catalog-controls {
  display: flex;
  gap: 16px;
  flex-wrap: wrap;
  margin-bottom: 40px;
}

.search-input {
  flex: 1 1 260px;
  padding: 14px 18px;
  border-radius: 8px;
  border: 1px solid var(--border-light);
  font-size: 1rem;
  background: var(--card-bg);
}

.search-input:focus {
  outline: 2px solid var(--blue);
}

.category-select {
  padding: 14px 18px;
  border-radius: 8px;
  border: 1px solid var(--border-light);
  font-size: 1rem;
  background: var(--card-bg);
}

.category-block {
  margin-bottom: 46px;
}

.category-title {
  font-size: 1.3rem;
  font-weight: 800;
  color: var(--navy-2);
  border-left: 4px solid var(--blue);
  padding-left: 14px;
  margin-bottom: 22px;
}

.product-grid {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(250px, 1fr));
  gap: 20px;
}

.product-card {
  background: var(--card-bg);
  border: 1px solid var(--border-light);
  border-radius: 10px;
  padding: 20px 22px;
  transition: box-shadow 0.15s ease, transform 0.15s ease;
}

.product-card:hover {
  box-shadow: 0 8px 22px rgba(10, 30, 63, 0.1);
  transform: translateY(-2px);
}

.product-card h4 {
  margin: 0 0 4px;
  font-size: 1.05rem;
  font-weight: 700;
}

.product-card .abbr {
  color: var(--blue);
  font-size: 0.8rem;
  font-weight: 700;
  letter-spacing: 0.5px;
  margin-bottom: 10px;
}

.spec-tags {
  display: flex;
  flex-wrap: wrap;
  gap: 6px;
}

.spec-tag {
  background: #eef4ff;
  color: #14406e;
  font-size: 0.78rem;
  font-weight: 600;
  padding: 5px 10px;
  border-radius: 20px;
}

.no-results {
  text-align: center;
  color: var(--muted-dark);
  padding: 60px 0;
  font-size: 1.05rem;
  display: none;
}

.disclaimer-strip {
  background: #e9f2ff;
  border-top: 1px solid #cfe2fb;
  border-bottom: 1px solid #cfe2fb;
  text-align: center;
  padding: 16px;
  font-size: 0.88rem;
  color: #14406e;
}

/* Contact */
.contact-wrap {
  padding: 60px 6vw 100px;
  max-width: 700px;
  margin: 0 auto;
}

.contact-card {
  background: var(--card-bg);
  border: 1px solid var(--border-light);
  border-radius: 14px;
  padding: 40px;
}

.form-group {
  margin-bottom: 20px;
}

.form-group label {
  display: block;
  font-weight: 700;
  font-size: 0.88rem;
  margin-bottom: 8px;
  letter-spacing: 0.3px;
}

.form-group input,
.form-group textarea,
.form-group select {
  width: 100%;
  padding: 13px 16px;
  border-radius: 8px;
  border: 1px solid var(--border-light);
  font-size: 0.98rem;
  font-family: inherit;
}

.form-group input:focus,
.form-group textarea:focus,
.form-group select:focus {
  outline: 2px solid var(--blue);
}

.form-group textarea {
  min-height: 130px;
  resize: vertical;
}

.contact-info-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(180px, 1fr));
  gap: 24px;
  margin: 0 auto 46px;
  max-width: 700px;
}

.contact-info-card {
  text-align: center;
  background: var(--card-bg);
  border: 1px solid var(--border-light);
  border-radius: 12px;
  padding: 26px 18px;
}

.contact-info-card svg {
  color: var(--blue);
  margin-bottom: 12px;
}

.contact-info-card h4 {
  margin: 0 0 6px;
  font-size: 0.9rem;
  letter-spacing: 0.5px;
}

.contact-info-card p {
  margin: 0;
  color: var(--muted-dark);
  font-size: 0.88rem;
}

.contact-info-card p a {
  color: var(--blue);
  text-decoration: none;
  font-weight: 600;
}

.contact-info-card p a:hover {
  text-decoration: underline;
}

.form-success {
  display: none;
  background: #e6f7ec;
  border: 1px solid #b6e6c7;
  color: #1b6b3a;
  padding: 16px 20px;
  border-radius: 8px;
  margin-bottom: 20px;
  font-weight: 600;
}

@media (max-width: 640px) {
  .hero h1 {
    font-size: 2.4rem;
  }
  .nav-links {
    gap: 18px;
    font-size: 0.82rem;
  }
  .site-footer {
    gap: 30px;
  }
}