:root {
  --ink: #142033;
  --muted: #617085;
  --line: #d9e6f2;
  --sky: #67cdfb;
  --blue: #1167b1;
  --cyan: #00a9e8;
  --green: #45c36c;
  --yellow: #f4c542;
  --red: #ef5a5a;
  --bg: #f6fbff;
  --paper: #ffffff;
  --shadow: 0 18px 48px rgba(17, 103, 177, 0.14);
  --radius: 8px;
}

* {
  box-sizing: border-box;
}

html {
  scroll-behavior: smooth;
}

body {
  margin: 0;
  font-family: Arial, Helvetica, sans-serif;
  color: var(--ink);
  background: var(--bg);
  line-height: 1.6;
}

a {
  color: inherit;
}

.site-header {
  position: sticky;
  top: 0;
  z-index: 20;
  background: rgba(255, 255, 255, 0.94);
  border-bottom: 1px solid rgba(103, 205, 251, 0.35);
  box-shadow: 0 8px 28px rgba(20, 32, 51, 0.08);
  backdrop-filter: blur(12px);
}

.nav-wrap {
  max-width: 1160px;
  min-height: 88px;
  margin: 0 auto;
  padding: 12px 24px;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 24px;
}

.brand {
  display: flex;
  align-items: center;
  gap: 14px;
  text-decoration: none;
  min-width: 230px;
}

.brand img {
  width: 74px;
  height: 50px;
  object-fit: contain;
}

.brand-name {
  display: block;
  font-size: 1.12rem;
  font-weight: 800;
  letter-spacing: 0;
}

.brand-sub {
  display: block;
  color: var(--muted);
  font-size: 0.86rem;
  margin-top: -2px;
}

.menu-toggle {
  display: none;
  width: 42px;
  height: 42px;
  border: 1px solid var(--line);
  border-radius: var(--radius);
  background: #fff;
  color: var(--blue);
  font-size: 1.5rem;
  font-weight: 800;
}

.main-nav {
  display: flex;
  align-items: center;
  gap: 22px;
}

.main-nav a {
  color: #73d7ff;
  font-size: 1.16rem;
  font-weight: 800;
  text-decoration: none;
  text-shadow: 0 0 8px rgba(103, 205, 251, 0.68);
  padding: 10px 0;
  border-bottom: 3px solid transparent;
}

.main-nav a:hover,
.main-nav a.active {
  color: var(--blue);
  border-bottom-color: var(--sky);
  text-shadow: 0 0 12px rgba(0, 169, 232, 0.8);
}

.page-hero {
  background:
    linear-gradient(120deg, rgba(17, 103, 177, 0.93) 0%, rgba(0, 169, 232, 0.72) 52%, rgba(255, 255, 255, 0.88) 100%),
    url("dct-logo.svg") center right 6% / 420px auto no-repeat;
  color: #fff;
}

.hero-inner,
.section-inner {
  max-width: 1160px;
  margin: 0 auto;
  padding: 64px 24px;
}

.page-hero .hero-inner {
  min-height: 420px;
  display: grid;
  align-items: center;
  grid-template-columns: minmax(0, 720px);
}

.eyebrow {
  margin: 0 0 12px;
  font-size: 0.9rem;
  font-weight: 800;
  letter-spacing: 0.08em;
  text-transform: uppercase;
  color: #d8f6ff;
}

h1,
h2,
h3 {
  line-height: 1.12;
  margin: 0;
}

h1 {
  font-size: clamp(2.2rem, 5vw, 4.6rem);
  max-width: 850px;
}

h2 {
  font-size: clamp(1.8rem, 3vw, 2.65rem);
  margin-bottom: 18px;
}

h3 {
  font-size: 1.28rem;
  margin-bottom: 10px;
}

.lead {
  font-size: 1.2rem;
  max-width: 720px;
  color: rgba(255, 255, 255, 0.9);
}

.hero-actions,
.button-row {
  display: flex;
  flex-wrap: wrap;
  gap: 12px;
  margin-top: 28px;
}

.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  min-height: 46px;
  padding: 12px 18px;
  border: 2px solid transparent;
  border-radius: var(--radius);
  font-weight: 800;
  text-decoration: none;
}

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

.btn-secondary {
  color: #fff;
  border-color: rgba(255, 255, 255, 0.72);
}

.band-white {
  background: var(--paper);
}

.band-blue {
  background: #e9f7ff;
}

.grid {
  display: grid;
  gap: 20px;
}

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

.grid-2 {
  grid-template-columns: repeat(2, minmax(0, 1fr));
}

.card {
  background: var(--paper);
  border: 1px solid var(--line);
  border-radius: var(--radius);
  padding: 24px;
  box-shadow: 0 10px 30px rgba(20, 32, 51, 0.07);
}

.service-card {
  border-top: 5px solid var(--cyan);
}

.service-card:nth-child(2n) {
  border-top-color: var(--green);
}

.service-card:nth-child(3n) {
  border-top-color: var(--yellow);
}

.service-card:nth-child(4n) {
  border-top-color: var(--red);
}

.feature-list,
.clean-list {
  margin: 0;
  padding-left: 18px;
}

.feature-list li,
.clean-list li {
  margin: 8px 0;
}

.price-table {
  width: 100%;
  border-collapse: collapse;
  background: #fff;
  border: 1px solid var(--line);
  border-radius: var(--radius);
  overflow: hidden;
  box-shadow: var(--shadow);
}

.price-table th,
.price-table td {
  text-align: left;
  padding: 16px 18px;
  border-bottom: 1px solid var(--line);
  vertical-align: top;
}

.price-table th {
  background: var(--blue);
  color: #fff;
}

.price-table tr:last-child td {
  border-bottom: 0;
}

.note {
  color: var(--muted);
  font-size: 0.96rem;
}

.contact-panel {
  display: grid;
  grid-template-columns: 1.1fr 0.9fr;
  gap: 26px;
  align-items: start;
}

.info-row {
  display: grid;
  grid-template-columns: 120px minmax(0, 1fr);
  gap: 12px;
  padding: 13px 0;
  border-bottom: 1px solid var(--line);
}

.info-row strong {
  color: var(--blue);
}

.map-frame {
  width: 100%;
  min-height: 430px;
  border: 0;
  border-radius: var(--radius);
  box-shadow: var(--shadow);
}

.legal {
  max-width: 880px;
}

.legal p {
  margin: 0 0 16px;
}

.site-footer {
  background: #142033;
  color: #dfeeff;
}

.footer-inner {
  max-width: 1160px;
  margin: 0 auto;
  padding: 34px 24px;
  display: flex;
  justify-content: space-between;
  gap: 24px;
  flex-wrap: wrap;
}

.footer-links {
  display: flex;
  gap: 18px;
  flex-wrap: wrap;
}

.footer-links a {
  color: #dfeeff;
  text-decoration: none;
}

@media (max-width: 880px) {
  .nav-wrap {
    min-height: 78px;
  }

  .menu-toggle {
    display: inline-flex;
    align-items: center;
    justify-content: center;
  }

  .main-nav {
    position: absolute;
    top: 78px;
    left: 0;
    right: 0;
    display: none;
    flex-direction: column;
    align-items: stretch;
    gap: 0;
    padding: 12px 24px 22px;
    background: #fff;
    border-bottom: 1px solid var(--line);
  }

  .main-nav.open {
    display: flex;
  }

  .main-nav a {
    padding: 13px 0;
    font-size: 1.1rem;
  }

  .grid-3,
  .grid-2,
  .contact-panel {
    grid-template-columns: 1fr;
  }

  .page-hero {
    background:
      linear-gradient(120deg, rgba(17, 103, 177, 0.94) 0%, rgba(0, 169, 232, 0.78) 58%, rgba(255, 255, 255, 0.9) 100%),
      url("dct-logo.svg") bottom 24px right -72px / 300px auto no-repeat;
  }

  .hero-inner,
  .section-inner {
    padding: 44px 20px;
  }
}

@media (max-width: 560px) {
  .brand {
    min-width: 0;
  }

  .brand img {
    width: 62px;
    height: 44px;
  }

  .brand-name {
    font-size: 0.98rem;
  }

  .brand-sub {
    display: none;
  }

  .info-row {
    grid-template-columns: 1fr;
    gap: 2px;
  }

  .price-table,
  .price-table tbody,
  .price-table tr,
  .price-table td {
    display: block;
  }

  .price-table thead {
    display: none;
  }

  .price-table td {
    border-bottom: 0;
    padding: 10px 16px;
  }

  .price-table tr {
    border-bottom: 1px solid var(--line);
    padding: 10px 0;
  }

  .price-table td::before {
    content: attr(data-label);
    display: block;
    color: var(--blue);
    font-weight: 800;
    margin-bottom: 2px;
  }
}