:root {
  --ink: #172033;
  --muted: #5d6878;
  --line: #dfe6ee;
  --brand: #0b6f94;
  --brand-dark: #084f6c;
  --ice: #eef8fb;
  --paper: #ffffff;
  --soft: #f6f8fb;
}

* {
  box-sizing: border-box;
}

body {
  margin: 0;
  color: var(--ink);
  background: var(--paper);
  font-family: Arial, Helvetica, sans-serif;
  font-size: 16px;
  line-height: 1.65;
}

img {
  display: block;
  max-width: 100%;
}

a {
  color: var(--brand);
}

.site-header {
  border-bottom: 1px solid var(--line);
  background: var(--paper);
}

.top-strip {
  background: var(--brand-dark);
  color: #fff;
  font-size: 0.95rem;
  padding: 0.55rem 0;
}

.container {
  width: min(1120px, calc(100% - 2rem));
  margin: 0 auto;
}

.nav-wrap {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 2rem;
  padding: 1rem 0;
}

.brand {
  display: inline-flex;
  align-items: center;
  gap: 0.75rem;
  color: var(--ink);
  font-weight: 700;
  text-decoration: none;
}

.brand img {
  width: 160px;
  height: auto;
}

.main-nav {
  display: flex;
  flex-wrap: wrap;
  gap: 0.35rem;
  justify-content: flex-end;
}

.main-nav a {
  border-radius: 4px;
  color: var(--ink);
  font-weight: 700;
  padding: 0.45rem 0.7rem;
  text-decoration: none;
}

.main-nav a[aria-current="page"],
.main-nav a:hover {
  background: var(--ice);
  color: var(--brand-dark);
}

.hero {
  background: linear-gradient(rgba(8, 79, 108, 0.72), rgba(8, 79, 108, 0.72)), url("../images/bann2.jpg") center / cover;
  color: #fff;
  padding: clamp(4rem, 9vw, 8rem) 0;
}

.hero h1,
.page-title h1 {
  font-size: clamp(2.1rem, 5vw, 4rem);
  line-height: 1.1;
  margin: 0 0 1rem;
}

.hero p {
  max-width: 760px;
  margin: 0;
  font-size: clamp(1.05rem, 2vw, 1.3rem);
}

.page-title {
  background: var(--ice);
  padding: 3rem 0;
}

.section {
  padding: 3rem 0;
}

.section.alt {
  background: var(--soft);
}

.section h2 {
  font-size: clamp(1.6rem, 3vw, 2.35rem);
  line-height: 1.2;
  margin: 0 0 1.2rem;
}

.section h3 {
  margin: 0 0 0.75rem;
}

.lead {
  color: var(--muted);
  font-size: 1.12rem;
  max-width: 840px;
}

.two-column {
  display: grid;
  grid-template-columns: minmax(0, 1.1fr) minmax(280px, 0.9fr);
  gap: 2rem;
  align-items: center;
}

.image-panel {
  border-radius: 8px;
  overflow: hidden;
  border: 1px solid var(--line);
}

.feature-grid,
.contact-grid {
  display: grid;
  grid-template-columns: repeat(3, minmax(0, 1fr));
  gap: 1rem;
}

.feature-card,
.contact-card,
.office-card {
  border: 1px solid var(--line);
  border-radius: 8px;
  background: var(--paper);
  padding: 1.25rem;
}

.feature-card h3,
.contact-card h3,
.office-card h3 {
  color: var(--brand-dark);
}

.clean-list {
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: 0.75rem;
  list-style: none;
  margin: 1.5rem 0 0;
  padding: 0;
}

.clean-list li {
  border-left: 4px solid var(--brand);
  background: var(--paper);
  padding: 0.8rem 1rem;
}

.table-wrap {
  overflow-x: auto;
}

table {
  width: 100%;
  border-collapse: collapse;
  min-width: 720px;
}

th,
td {
  border: 1px solid var(--line);
  padding: 0.75rem;
  text-align: left;
}

th {
  background: var(--brand-dark);
  color: #fff;
}

tbody tr:nth-child(even) {
  background: var(--soft);
}

.gallery-grid {
  display: grid;
  grid-template-columns: repeat(3, minmax(0, 1fr));
  gap: 1rem;
}

.gallery-grid figure {
  margin: 0;
  border: 1px solid var(--line);
  border-radius: 8px;
  overflow: hidden;
  background: var(--paper);
}

.gallery-grid img {
  width: 100%;
  height: 240px;
  object-fit: cover;
}

.contact-form {
  display: grid;
  gap: 0.9rem;
  margin-top: 1rem;
}

.contact-form input,
.contact-form textarea {
  width: 100%;
  border: 1px solid var(--line);
  border-radius: 4px;
  font: inherit;
  padding: 0.85rem 1rem;
}

.contact-form textarea {
  min-height: 150px;
  resize: vertical;
}

.button {
  display: inline-block;
  width: fit-content;
  border: 0;
  border-radius: 4px;
  background: var(--brand);
  color: #fff;
  cursor: pointer;
  font-weight: 700;
  padding: 0.8rem 1.2rem;
  text-decoration: none;
}

.site-footer {
  background: #101827;
  color: #d9e4ed;
}

.site-footer a {
  color: #fff;
}

.footer-main {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 2rem;
  padding: 2rem 0;
}

.footer-main h2,
.footer-main h3 {
  color: #fff;
  margin-top: 0;
}

.footer-nav {
  display: flex;
  flex-wrap: wrap;
  gap: 0.75rem;
}

.footer-nav a {
  text-decoration: none;
}

.copyright {
  border-top: 1px solid rgba(255, 255, 255, 0.15);
  padding: 1rem 0;
  font-size: 0.92rem;
}

@media (max-width: 780px) {
  .nav-wrap,
  .two-column,
  .footer-main {
    grid-template-columns: 1fr;
  }

  .nav-wrap {
    align-items: flex-start;
    flex-direction: column;
    gap: 1rem;
  }

  .main-nav {
    justify-content: flex-start;
  }

  .feature-grid,
  .contact-grid,
  .clean-list,
  .gallery-grid {
    grid-template-columns: 1fr;
  }

  .gallery-grid img {
    height: 220px;
  }
}