:root {
  --green-900: #0d3b2e;
  --green-700: #1a6b4f;
  --green-500: #2d9f6f;
  --green-100: #e8f5ef;
  --slate-900: #0f172a;
  --slate-700: #334155;
  --slate-500: #64748b;
  --slate-100: #f1f5f9;
  --white: #ffffff;
  --shadow: 0 4px 24px rgba(15, 23, 42, 0.08);
  --radius: 12px;
}

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

html {
  scroll-behavior: smooth;
}

body {
  font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, "Helvetica Neue", Arial, sans-serif;
  color: var(--slate-700);
  line-height: 1.6;
  background: var(--white);
}

a {
  color: var(--green-700);
  text-decoration: none;
}

a:hover {
  text-decoration: underline;
}

.container {
  max-width: 1100px;
  margin: 0 auto;
  padding: 0 24px;
}

/* Header */
.site-header {
  background: var(--white);
  border-bottom: 1px solid #e2e8f0;
  position: sticky;
  top: 0;
  z-index: 100;
}

.site-header .container {
  display: flex;
  align-items: center;
  justify-content: space-between;
  height: 64px;
}

.logo {
  display: flex;
  align-items: center;
  gap: 10px;
  font-weight: 700;
  font-size: 1.25rem;
  color: var(--green-900);
  text-decoration: none;
}

.logo:hover {
  text-decoration: none;
}

.logo-icon {
  width: 36px;
  height: 36px;
  background: linear-gradient(135deg, var(--green-500), var(--green-700));
  border-radius: 8px;
  display: flex;
  align-items: center;
  justify-content: center;
  color: white;
  font-size: 1.1rem;
}

.nav-links {
  display: flex;
  gap: 28px;
  list-style: none;
}

.nav-links a {
  color: var(--slate-700);
  font-size: 0.95rem;
  font-weight: 500;
  text-decoration: none;
}

.nav-links a:hover {
  color: var(--green-700);
  text-decoration: none;
}

/* Hero */
.hero {
  background: linear-gradient(160deg, var(--green-900) 0%, var(--green-700) 60%, var(--green-500) 100%);
  color: var(--white);
  padding: 96px 0 80px;
}

.hero h1 {
  font-size: clamp(2.2rem, 5vw, 3.2rem);
  font-weight: 800;
  line-height: 1.15;
  margin-bottom: 20px;
  letter-spacing: -0.02em;
}

.hero p {
  font-size: 1.15rem;
  opacity: 0.9;
  max-width: 560px;
  margin-bottom: 36px;
}

.btn {
  display: inline-block;
  padding: 14px 28px;
  border-radius: 8px;
  font-weight: 600;
  font-size: 0.95rem;
  text-decoration: none;
  transition: transform 0.15s, box-shadow 0.15s;
}

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

.btn-primary {
  background: var(--white);
  color: var(--green-900);
  box-shadow: 0 4px 14px rgba(0, 0, 0, 0.15);
}

.btn-outline {
  border: 2px solid rgba(255, 255, 255, 0.6);
  color: var(--white);
  margin-left: 12px;
}

.btn-outline:hover {
  background: rgba(255, 255, 255, 0.1);
}

/* Sections */
section {
  padding: 72px 0;
}

.section-title {
  font-size: 1.75rem;
  font-weight: 700;
  color: var(--slate-900);
  margin-bottom: 12px;
}

.section-subtitle {
  color: var(--slate-500);
  margin-bottom: 40px;
  max-width: 560px;
}

/* Cards */
.cards {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(280px, 1fr));
  gap: 24px;
}

.card {
  background: var(--white);
  border: 1px solid #e2e8f0;
  border-radius: var(--radius);
  padding: 28px;
  box-shadow: var(--shadow);
}

.card-icon {
  width: 48px;
  height: 48px;
  background: var(--green-100);
  border-radius: 10px;
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 1.4rem;
  margin-bottom: 16px;
}

.card h3 {
  font-size: 1.1rem;
  color: var(--slate-900);
  margin-bottom: 8px;
}

.card p {
  font-size: 0.95rem;
  color: var(--slate-500);
}

/* About */
.about {
  background: var(--slate-100);
}

.about-content {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 48px;
  align-items: center;
}

.about-text p {
  margin-bottom: 16px;
  color: var(--slate-700);
}

.about-highlight {
  background: var(--white);
  border-radius: var(--radius);
  padding: 32px;
  box-shadow: var(--shadow);
  border-left: 4px solid var(--green-500);
}

.about-highlight h3 {
  color: var(--green-900);
  margin-bottom: 12px;
}

/* Contact */
.contact-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(240px, 1fr));
  gap: 24px;
}

.contact-item {
  display: flex;
  align-items: flex-start;
  gap: 14px;
}

.contact-item .icon {
  font-size: 1.3rem;
}

.contact-item strong {
  display: block;
  color: var(--slate-900);
  margin-bottom: 4px;
}

/* Footer */
.site-footer {
  background: var(--slate-900);
  color: #94a3b8;
  padding: 40px 0;
  font-size: 0.9rem;
}

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

.site-footer a {
  color: #cbd5e1;
}

.footer-links {
  display: flex;
  gap: 24px;
}

/* Privacy policy page */
.policy-hero {
  background: var(--slate-100);
  padding: 48px 0 32px;
  border-bottom: 1px solid #e2e8f0;
}

.policy-hero h1 {
  font-size: 2rem;
  color: var(--slate-900);
  margin-bottom: 8px;
}

.policy-hero .meta {
  color: var(--slate-500);
  font-size: 0.9rem;
}

.policy-content {
  max-width: 760px;
  margin: 0 auto;
  padding: 48px 24px 80px;
}

.policy-content h2 {
  font-size: 1.25rem;
  color: var(--slate-900);
  margin: 36px 0 12px;
}

.policy-content h3 {
  font-size: 1.05rem;
  color: var(--slate-900);
  margin: 24px 0 8px;
}

.policy-content p,
.policy-content li {
  margin-bottom: 12px;
  color: var(--slate-700);
}

.policy-content ul {
  padding-left: 24px;
  margin-bottom: 16px;
}

.policy-content .updated {
  background: var(--green-100);
  border-radius: 8px;
  padding: 16px 20px;
  margin-bottom: 32px;
  font-size: 0.9rem;
  color: var(--green-900);
}

@media (max-width: 768px) {
  .about-content {
    grid-template-columns: 1fr;
  }

  .btn-outline {
    margin-left: 0;
    margin-top: 12px;
    display: inline-block;
  }

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