* {
  box-sizing: border-box;
}

html {
  scroll-behavior: smooth;
}

body {
  margin: 0;
  font-family: Arial, Helvetica, sans-serif;
  line-height: 1.6;
  color: #222;
  background: #ffffff;
}

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

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

.container {
  width: min(1100px, calc(100% - 40px));
  margin: 0 auto;
}

.narrow {
  max-width: 900px;
}

.site-header {
  background: #0b3d5c;
  color: #ffffff;
  position: sticky;
  top: 0;
  z-index: 50;
}

.header-inner {
  display: flex;
  align-items: center;
  justify-content: space-between;
  min-height: 78px;
  gap: 20px;
}

.logo {
  font-size: 1.15rem;
  font-weight: 700;
}

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

.site-nav a {
  color: #ffffff;
  font-weight: 700;
  font-size: 0.95rem;
}

.site-nav a.active {
  color: #9ee6ff;
}

.nav-toggle {
  display: none;
  border: 0;
  background: transparent;
  color: #ffffff;
  font-size: 1.6rem;
  cursor: pointer;
}

.hero {
  padding: 90px 0 80px;
  text-align: center;
}

.hero-home,
.hero-carbon,
.hero-support {
  background: linear-gradient(135deg, #0b3d5c 0%, #0f5d7a 100%);
  color: #ffffff;
}

.page-hero {
  background: #f6f8fb;
  padding: 70px 0 40px;
}

.eyebrow {
  display: inline-block;
  margin-bottom: 14px;
  padding: 6px 12px;
  border-radius: 999px;
  background: rgba(255, 255, 255, 0.14);
  color: #ffffff;
  font-size: 0.85rem;
  font-weight: 700;
  letter-spacing: 0.04em;
  text-transform: uppercase;
}

.eyebrow.dark {
  background: #dbeafe;
  color: #0b3d5c;
}

.hero h1,
.page-hero h1 {
  margin: 0 0 16px;
  font-size: 2.8rem;
  line-height: 1.15;
}

.hero-text {
  font-size: 1.15rem;
  margin: 0 auto 12px;
  max-width: 780px;
}

.hero-subtext {
  max-width: 860px;
  margin: 0 auto 26px;
  color: rgba(255, 255, 255, 0.92);
}

.page-hero p {
  max-width: 760px;
  margin: 0;
  color: #374151;
}

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

.btn {
  display: inline-block;
  padding: 12px 22px;
  border-radius: 6px;
  font-weight: 700;
  transition: 0.2s ease;
}

.btn-primary {
  background: #ffffff;
  color: #0b3d5c;
}

.btn-primary:hover {
  opacity: 0.92;
}

.btn-secondary {
  background: transparent;
  color: #ffffff;
  border: 1px solid rgba(255, 255, 255, 0.45);
}

.btn-secondary:hover {
  background: rgba(255, 255, 255, 0.08);
}

.text-link {
  display: inline-block;
  margin-top: 10px;
  color: #0b3d5c;
  font-weight: 700;
}

.section {
  padding: 72px 0;
}

.alt-section {
  background: #f6f8fb;
}

.section-heading {
  margin-bottom: 28px;
}

.section-heading h2,
.section h2,
.legal-copy h2 {
  margin-top: 0;
  color: #0b3d5c;
}

.feature-grid,
.steps-grid,
.contact-grid {
  display: grid;
  gap: 22px;
}

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

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

.contact-grid {
  grid-template-columns: 1fr 1fr;
  align-items: start;
}

.feature-card,
.step-card,
.contact-card {
  background: #ffffff;
  border: 1px solid #e5e7eb;
  border-radius: 16px;
  padding: 24px;
  box-shadow: 0 10px 30px rgba(15, 23, 42, 0.05);
}

.feature-card h3,
.step-card h3 {
  margin-top: 0;
  margin-bottom: 10px;
  color: #0b3d5c;
}

.step-number {
  display: inline-block;
  margin-bottom: 12px;
  font-weight: 700;
  color: #0b3d5c;
  font-size: 0.9rem;
  letter-spacing: 0.08em;
}

.styled-list {
  padding-left: 20px;
}

.styled-list li {
  margin-bottom: 12px;
}

.contact-form {
  display: grid;
  gap: 12px;
}

.contact-form label {
  font-weight: 700;
  color: #0b3d5c;
}

.contact-form input,
.contact-form select,
.contact-form textarea {
  width: 100%;
  padding: 12px 14px;
  border: 1px solid #d1d5db;
  border-radius: 8px;
  font: inherit;
  background: #ffffff;
}

.contact-form textarea {
  resize: vertical;
}

.cta-section {
  background: #0b3d5c;
  color: #ffffff;
}

.cta-section h2,
.cta-section p {
  color: #ffffff;
}

.text-center {
  text-align: center;
}

.site-footer {
  background: #0b3d5c;
  color: #ffffff;
  padding: 24px 0;
}

.footer-inner {
  display: flex;
  justify-content: space-between;
  align-items: center;
  gap: 16px;
  flex-wrap: wrap;
}

.footer-links {
  display: flex;
  gap: 16px;
}

.legal-copy p {
  margin-bottom: 18px;
}

@media (max-width: 900px) {
  .feature-grid,
  .steps-grid,
  .contact-grid {
    grid-template-columns: 1fr;
  }
}

@media (max-width: 768px) {
  .nav-toggle {
    display: block;
  }

  .site-nav {
    display: none;
    position: absolute;
    top: 78px;
    right: 20px;
    left: 20px;
    background: #0b3d5c;
    flex-direction: column;
    align-items: flex-start;
    padding: 18px;
    border-radius: 12px;
    box-shadow: 0 10px 30px rgba(0, 0, 0, 0.2);
  }

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

  .hero,
  .page-hero {
    padding-top: 60px;
    padding-bottom: 50px;
  }

  .hero h1,
  .page-hero h1 {
    font-size: 2rem;
  }

  .container {
    width: min(100% - 24px, 1100px);
  }
}