:root {
  --primary: #0f2f4f;
  --secondary: #146b8f;
  --accent: #1f9ac6;
  --text: #1f2a37;
  --muted: #5d6b7b;
  --surface: #ffffff;
  --surface-soft: #f5f8fc;
  --line: #dbe4ef;
  --max: 1160px;
}

* {
  box-sizing: border-box;
}

body {
  margin: 0;
  font-family: "Segoe UI", Tahoma, Geneva, Verdana, sans-serif;
  color: var(--text);
  background: var(--surface);
  line-height: 1.6;
}

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

.site-header {
  position: sticky;
  top: 0;
  z-index: 50;
  background: #ffffff;
  border-bottom: 1px solid #e5edf5;
}

.header-inner {
  max-width: var(--max);
  margin: 0 auto;
  padding: 14px 24px;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 24px;
}

.brand.brand-text {
  font-size: 28px;
  font-weight: 800;
  letter-spacing: 0.4px;
  color: var(--primary);
  white-space: nowrap;
}

.menu-toggle {
  display: none;
  border: 1px solid var(--line);
  background: #fff;
  padding: 9px 12px;
  font-size: 14px;
  font-weight: 700;
  color: var(--primary);
  cursor: pointer;
}

.site-nav ul {
  margin: 0;
  padding: 0;
  list-style: none;
  display: flex;
  align-items: center;
  gap: 20px;
  color: var(--primary);
  font-weight: 600;
}

.site-nav a {
  padding-bottom: 3px;
  border-bottom: 2px solid transparent;
}

.site-nav a.active,
.site-nav a:hover {
  border-bottom-color: var(--secondary);
}

.hero {
  min-height: 360px;
  position: relative;
  display: grid;
  place-items: center;
  overflow: hidden;
}

.hero-gradient {
  background:
    radial-gradient(circle at 10% 20%, #1f9ac638 0 180px, transparent 180px),
    radial-gradient(circle at 85% 30%, #146b8f52 0 220px, transparent 220px),
    linear-gradient(120deg, #0f2f4f, #146b8f 62%, #1f9ac6);
}

.services-hero {
  background:
    radial-gradient(circle at 12% 12%, #ffffff20 0 120px, transparent 120px),
    radial-gradient(circle at 88% 80%, #ffffff1a 0 170px, transparent 170px),
    linear-gradient(130deg, #1f3653, #0d5675 52%, #1f9ac6);
}

.contact-hero {
  background:
    radial-gradient(circle at 20% 30%, #ffffff24 0 140px, transparent 140px),
    radial-gradient(circle at 80% 25%, #ffffff1c 0 120px, transparent 120px),
    linear-gradient(120deg, #17436a, #1f9ac6);
}

.hero::before {
  content: "";
  position: absolute;
  inset: 0;
  background: rgba(0, 0, 0, 0.25);
}

.hero-inner {
  position: relative;
  width: 100%;
  max-width: var(--max);
  padding: 40px 24px;
}

.hero-inner.centered {
  text-align: center;
}

.hero h1 {
  margin: 0;
  color: #fff;
  font-size: clamp(40px, 6vw, 72px);
  font-weight: 800;
}

.section {
  max-width: var(--max);
  margin: 0 auto;
  padding: 58px 24px;
}

.section.soft {
  background: var(--surface-soft);
  border-top: 1px solid var(--line);
  border-bottom: 1px solid var(--line);
}

.section-title {
  margin: 0;
  text-align: center;
  font-size: clamp(30px, 4vw, 44px);
  color: var(--primary);
}

.section-divider {
  width: min(76%, 840px);
  margin: 22px auto 28px;
  border: 0;
  border-top: 1px solid var(--line);
}

.lede {
  margin: 0 0 14px;
  font-size: clamp(26px, 3.8vw, 42px);
  font-weight: 700;
  color: var(--primary);
  line-height: 1.2;
}

p {
  margin: 0 0 16px;
}

.priority-note {
  max-width: 760px;
  margin: 0 auto 18px;
  text-align: center;
}

.priority-note a {
  color: var(--secondary);
  text-decoration: underline;
}

.values-grid {
  display: grid;
  gap: 16px;
  grid-template-columns: repeat(2, minmax(0, 1fr));
}

.info-card {
  padding: 22px 24px;
  border: 1px solid var(--line);
  background: #fff;
}

.info-card h3 {
  margin: 0 0 8px;
  color: var(--primary);
}

.info-card p {
  margin: 0;
  color: var(--muted);
}

.button-row {
  display: flex;
  gap: 12px;
  flex-wrap: wrap;
  margin-top: 14px;
}

.button {
  background: var(--secondary);
  color: #fff;
  padding: 12px 18px;
  font-weight: 700;
  border: 1px solid #ffffff44;
  transition: background-color 0.2s ease, transform 0.2s ease;
  cursor: pointer;
}

.button:hover {
  background: var(--primary);
  transform: translateY(-1px);
}

.button:disabled {
  opacity: 0.65;
  cursor: not-allowed;
  transform: none;
}

.mini-service-grid {
  display: grid;
  gap: 14px;
  grid-template-columns: repeat(2, minmax(0, 1fr));
}

.mini-service {
  background: #fff;
  border: 1px solid var(--line);
  padding: 16px 18px;
}

.mini-service h4 {
  margin: 0 0 8px;
  color: var(--primary);
  font-size: 19px;
}

.construction-image-grid {
  display: grid;
  gap: 12px;
  grid-template-columns: repeat(3, minmax(0, 1fr));
}

.construction-image-grid img {
  width: 100%;
  aspect-ratio: 16 / 10;
  object-fit: cover;
  border: 1px solid var(--line);
}

.service-hero-image img,
.contact-visual img {
  width: 100%;
  aspect-ratio: 16 / 8;
  object-fit: cover;
  border: 1px solid var(--line);
}

.contact-visual {
  max-width: 760px;
  margin: 0 auto 18px;
}

.catalog-note {
  text-align: center;
  color: var(--muted);
  margin-bottom: 20px;
}

.service-catalog-grid {
  display: grid;
  gap: 16px;
  grid-template-columns: repeat(3, minmax(0, 1fr));
}

.service-catalog-card {
  border: 1px solid var(--line);
  background: linear-gradient(145deg, #ffffff, #f4f9ff);
  min-height: 230px;
  padding: 18px;
  position: relative;
  overflow: hidden;
  transition: transform 0.2s ease, box-shadow 0.2s ease;
}

.service-catalog-card h3 {
  margin: 0;
  color: var(--primary);
  font-size: 24px;
  line-height: 1.2;
  transition: transform 0.2s ease, opacity 0.2s ease;
}

.service-catalog-card ul {
  margin: 14px 0 0 18px;
  padding: 0;
  color: var(--text);
  opacity: 0;
  transform: translateY(8px);
  transition: opacity 0.2s ease, transform 0.2s ease;
}

.service-catalog-card li {
  margin-bottom: 6px;
}

.service-catalog-card:hover {
  transform: translateY(-2px);
  box-shadow: 0 10px 28px #0f2f4f1a;
}

.service-catalog-card:hover h3 {
  opacity: 0.2;
  transform: translateY(-6px);
}

.service-catalog-card:hover ul {
  opacity: 1;
  transform: translateY(0);
}

.contact-single {
  max-width: 760px;
  margin: 0 auto;
}

.contact-form .form-row {
  margin-bottom: 12px;
}

.contact-form label {
  display: block;
  margin-bottom: 5px;
  font-weight: 600;
  color: var(--primary);
}

.contact-form input,
.contact-form textarea {
  width: 100%;
  border: 1px solid var(--line);
  background: #fff;
  padding: 10px 12px;
  font: inherit;
  color: var(--text);
}

.contact-form textarea {
  resize: vertical;
}

.form-message {
  margin-top: 12px;
  margin-bottom: 0;
  font-weight: 600;
}

.form-message.error {
  color: #b20000;
}

.form-message.success {
  color: #0b6a2f;
}

@media (max-width: 980px) {
  .service-catalog-grid {
    grid-template-columns: repeat(2, minmax(0, 1fr));
  }
}

@media (max-width: 860px) {
  .menu-toggle {
    display: inline-block;
  }

  .site-nav {
    position: absolute;
    top: calc(100% + 1px);
    right: 0;
    left: 0;
    background: #fff;
    border-bottom: 1px solid #e5edf5;
    display: none;
  }

  .site-nav.open {
    display: block;
  }

  .site-nav ul {
    max-width: var(--max);
    margin: 0 auto;
    padding: 10px 24px 16px;
    flex-wrap: wrap;
    gap: 8px 18px;
  }
}

@media (max-width: 700px) {
  .header-inner {
    padding: 12px 14px;
  }

  .brand.brand-text {
    font-size: 24px;
  }

  .hero {
    min-height: 300px;
  }

  .section {
    padding: 42px 16px;
  }

  .values-grid,
  .mini-service-grid,
  .service-catalog-grid,
  .construction-image-grid {
    grid-template-columns: 1fr;
  }
}

@media (hover: none) {
  .service-catalog-card h3 {
    opacity: 1;
    transform: none;
    margin-bottom: 10px;
  }

  .service-catalog-card ul {
    opacity: 1;
    transform: none;
  }
}