:root {
  --bg: #f6fbfc;
  --surface: #ffffff;
  --text: #163246;
  --muted: #607785;
  --accent: #1d808a;
  --accent-dark: #15626b;
  --border: #d9e7ec;
  --shadow: 0 14px 40px rgba(15, 39, 57, 0.08);
  --max: 1160px;
  --radius: 18px;
}

* { box-sizing: border-box; }
html { scroll-behavior: smooth; }

body {
  margin: 0;
  font-family: "Inter", Arial, Helvetica, sans-serif;
  color: var(--text);
  background:
    radial-gradient(circle at top left, rgba(29, 128, 138, 0.06), transparent 30%),
    linear-gradient(to bottom, #f8fcfd, #f3f8fa 40%, #f8fbfc);
  line-height: 1.65;
}

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

a { color: var(--accent-dark); text-decoration: none; }
a:hover { text-decoration: underline; }

.container {
  width: min(92%, var(--max));
  margin: 0 auto;
}

.site-header {
  position: sticky;
  top: 0;
  z-index: 30;
  background: rgba(246, 251, 252, 0.92);
  backdrop-filter: blur(10px);
  border-bottom: 1px solid rgba(217, 231, 236, 0.9);
}

.nav {
  min-height: 74px;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 22px;
}

.brand {
  color: var(--text);
  font-weight: 800;
  font-size: 1.2rem;
  letter-spacing: 0.15px;
}

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

.nav-links a {
  color: var(--muted);
  font-weight: 600;
  font-size: 0.95rem;
}

.nav-links a:hover {
  color: var(--accent-dark);
  text-decoration: none;
}

.hero {
  padding: 78px 0 54px;
}

.hero-grid {
  display: grid;
  grid-template-columns: 1.08fr 0.92fr;
  gap: 40px;
  align-items: center;
}

.eyebrow {
  display: inline-block;
  margin-bottom: 14px;
  color: var(--accent-dark);
  font-size: 0.88rem;
  font-weight: 800;
  text-transform: uppercase;
  letter-spacing: 0.55px;
}

h1 {
  margin: 0 0 18px;
  font-size: clamp(2.15rem, 4vw, 3.6rem);
  line-height: 1.08;
  letter-spacing: -0.02em;
}

.hero-subtitle {
  margin: 0 0 18px;
  max-width: 700px;
  color: var(--muted);
  font-size: 1.18rem;
}

.value-stack {
  display: flex;
  flex-wrap: wrap;
  gap: 10px;
  margin: 0 0 18px;
}

.value-stack span {
  display: inline-flex;
  align-items: center;
  padding: 8px 12px;
  border-radius: 999px;
  background: rgba(29, 128, 138, 0.08);
  color: var(--accent-dark);
  font-weight: 700;
  font-size: 0.95rem;
  border: 1px solid rgba(29, 128, 138, 0.16);
}

.hero-body {
  margin: 0 0 28px;
  max-width: 720px;
}

.hero-actions {
  display: flex;
  flex-wrap: wrap;
  gap: 14px;
}

.button {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  min-height: 46px;
  padding: 0 18px;
  border-radius: 12px;
  font-weight: 700;
  border: 1px solid var(--accent);
  transition: transform 0.18s ease, background-color 0.18s ease, border-color 0.18s ease;
}

.button:hover {
  transform: translateY(-1px);
  text-decoration: none;
}

.button.primary {
  background: var(--accent);
  color: #fff;
}

.button.primary:hover {
  background: var(--accent-dark);
  border-color: var(--accent-dark);
}

.button.secondary {
  color: var(--accent-dark);
  background: #fff;
}

.button.secondary:hover {
  background: #edf6f8;
}

.hero-visual,
.section-card {
  background: var(--surface);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  box-shadow: var(--shadow);
}

.hero-visual {
  padding: 18px;
}

.hero-visual img {
  border-radius: 12px;
}

.hero-visual figcaption {
  margin-top: 12px;
  text-align: center;
  color: var(--muted);
  font-size: 0.9rem;
}

section {
  padding: 14px 0;
}

.section-card {
  padding: 30px;
}

h2 {
  margin: 0 0 12px;
  font-size: clamp(1.45rem, 2.2vw, 2rem);
  letter-spacing: -0.02em;
}

p {
  margin: 0 0 14px;
}

.section-intro {
  color: var(--muted);
}

.three-col {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 18px;
  margin-top: 20px;
}

.feature {
  background: linear-gradient(to bottom, #fbfeff, #f7fbfc);
  border: 1px solid var(--border);
  border-radius: 14px;
  padding: 18px;
}

.feature h3 {
  margin: 0 0 8px;
  color: var(--accent-dark);
  font-size: 1.02rem;
}

.section-note {
  margin-top: 18px;
}

.clean-list {
  margin: 10px 0 16px 20px;
  padding: 0;
}

.clean-list li {
  margin-bottom: 8px;
}

.contact-card {
  display: grid;
  grid-template-columns: 1fr auto;
  align-items: center;
  gap: 22px;
}

.contact-person {
  margin-bottom: 10px;
}

footer {
  padding: 28px 0 40px;
  color: var(--muted);
  font-size: 0.92rem;
}

.footer-line {
  padding-top: 18px;
  border-top: 1px solid var(--border);
}

@media (max-width: 940px) {
  .hero-grid,
  .three-col,
  .contact-card {
    grid-template-columns: 1fr;
  }

  .hero {
    padding-top: 54px;
  }
}

@media (max-width: 620px) {
  .nav {
    flex-direction: column;
    align-items: flex-start;
    padding: 14px 0;
  }

  .nav-links {
    gap: 12px 16px;
  }

  .section-card,
  .hero-visual {
    padding: 22px;
  }

  h1 {
    font-size: 2.2rem;
  }
}