:root {
  --primary: #0f766e;
  --primary-dark: #115e59;
  --accent: #f59e0b;
  --light: #f8fafc;
  --text: #1f2937;
  --muted: #64748b;
  --white: #ffffff;
}

* {
  box-sizing: border-box;
  margin: 0;
  padding: 0;
}

html {
  scroll-behavior: smooth;
}

body {
  font-family: Arial, Helvetica, sans-serif;
  line-height: 1.6;
  color: var(--text);
  background: var(--light);
}

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

header {
  background: var(--white);
  box-shadow: 0 2px 12px rgba(0, 0, 0, 0.06);
  position: sticky;
  top: 0;
  z-index: 10;
}

.container {
  width: min(1120px, 92%);
  margin: auto;
}

nav {
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 18px 0;
  gap: 18px;
}

.logo {
  display: inline-flex;
  align-items: center;
  gap: 14px;
  white-space: nowrap;
}

.logo img {
  display: block;
  height: 64px;
  width: auto;
  flex: 0 0 auto;
}

.brand-text {
  display: inline-flex;
  align-items: baseline;
  gap: 10px;
  font-size: clamp(20px, 2.2vw, 30px);
  line-height: 1;
  font-weight: 800;
  letter-spacing: -0.03em;
}

.brand-text .brand-primary {
  color: var(--primary);
}

.brand-text .brand-accent {
  color: var(--accent);
}

.nav-links {
  display: flex;
  gap: 24px;
  font-size: 15px;
  color: var(--muted);
  flex-wrap: wrap;
  justify-content: center;
}

.nav-links a.active,
.nav-links a:hover {
  color: var(--primary-dark);
}

.btn {
  display: inline-block;
  padding: 12px 22px;
  border-radius: 999px;
  background: var(--primary);
  color: var(--white);
  font-weight: 700;
  transition: 0.2s ease;
  border: 0;
  cursor: pointer;
}

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

.btn-outline {
  background: transparent;
  color: var(--primary);
  border: 2px solid var(--primary);
}

.btn-outline:hover {
  background: rgba(15, 118, 110, 0.06);
}

.hero,
.page-hero {
  background:
    linear-gradient(135deg, rgba(15, 118, 110, 0.93), rgba(17, 94, 89, 0.92)),
    url("https://images.unsplash.com/photo-1488521787991-ed7bbaae773c?auto=format&fit=crop&w=1600&q=80")
      center/cover;
  color: var(--white);
}

.hero {
  padding: 110px 0;
}

.page-hero {
  padding: 86px 0;
  text-align: center;
}

.hero-content,
.page-hero-content {
  max-width: 760px;
}

.page-hero-content {
  margin: 0 auto;
}

.hero h1,
.page-hero h1 {
  font-size: clamp(36px, 6vw, 64px);
  line-height: 1.1;
  margin-bottom: 20px;
}

.hero p,
.page-hero p {
  font-size: 20px;
  opacity: 0.95;
  margin-bottom: 30px;
}

section {
  padding: 76px 0;
}

.section-title {
  text-align: center;
  margin-bottom: 46px;
}

.section-title h2 {
  font-size: 36px;
  color: var(--primary-dark);
  margin-bottom: 12px;
}

.section-title p {
  color: var(--muted);
  max-width: 680px;
  margin: auto;
}

.grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 24px;
}

.card {
  background: var(--white);
  border-radius: 20px;
  padding: 28px;
  box-shadow: 0 10px 30px rgba(15, 23, 42, 0.07);
}

.card h3 {
  color: var(--primary);
  margin-bottom: 12px;
  font-size: 22px;
}

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

.about {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 42px;
  align-items: center;
}

.about img {
  width: 100%;
  border-radius: 24px;
  box-shadow: 0 15px 40px rgba(0, 0, 0, 0.12);
}

.about h2 {
  font-size: 36px;
  color: var(--primary-dark);
  margin-bottom: 18px;
}

.about p {
  color: var(--muted);
  margin-bottom: 16px;
}

.impact {
  background: var(--primary-dark);
  color: var(--white);
}

.impact .card {
  background: rgba(255, 255, 255, 0.1);
  box-shadow: none;
  text-align: center;
}

.impact h3 {
  font-size: 42px;
  color: var(--accent);
}

.impact p {
  color: rgba(255, 255, 255, 0.88);
}

.cta {
  background: linear-gradient(135deg, #fef3c7, #ccfbf1);
  text-align: center;
}

.cta h2 {
  font-size: 38px;
  color: var(--primary-dark);
  margin-bottom: 14px;
}

.cta p {
  max-width: 720px;
  margin: 0 auto 28px;
  color: var(--muted);
}

.contact-box {
  background: var(--white);
  border-radius: 24px;
  padding: 34px;
  box-shadow: 0 10px 30px rgba(15, 23, 42, 0.07);
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 24px;
}

form {
  display: block;
}

input,
textarea {
  width: 100%;
  padding: 14px 16px;
  border: 1px solid #cbd5e1;
  border-radius: 12px;
  margin-bottom: 14px;
  font-size: 15px;
  font-family: inherit;
}

textarea {
  min-height: 120px;
  resize: vertical;
}

footer {
  background: #0f172a;
  color: #cbd5e1;
  padding: 34px 0;
  text-align: center;
}

footer strong {
  color: var(--white);
}

.section-links {
  display: flex;
  gap: 14px;
  flex-wrap: wrap;
  justify-content: center;
}

.section-links .btn-outline {
  background: rgba(255, 255, 255, 0.08);
  color: var(--white);
  border-color: rgba(255, 255, 255, 0.35);
}

.section-links .btn-outline:hover {
  background: rgba(255, 255, 255, 0.14);
}

@media (max-width: 820px) {
  .logo {
    gap: 10px;
  }

  .logo img {
    height: 48px;
  }

  .brand-text {
    font-size: 16px;
    gap: 6px;
  }

  .nav-links {
    display: none;
  }

  .grid,
  .about,
  .contact-box {
    grid-template-columns: 1fr;
  }

  .hero {
    padding: 80px 0;
  }

  .page-hero {
    padding: 72px 0;
  }

  .hero p,
  .page-hero p {
    font-size: 18px;
  }
}