* {
  box-sizing: border-box;
}

:root {
  color-scheme: light;
  --background: #f7f8f7;
  --surface: #ffffff;
  --surface-alt: #f0f4ef;
  --text: #1f2937;
  --muted: #6b7280;
  --primary: #1f7a3d;
  --primary-dark: #166534;
  --border: #dbe4dc;
  --shadow: 0 20px 45px rgba(15, 23, 42, 0.08);
}

html {
  scroll-behavior: smooth;
}

body {
  margin: 0;
  font-family: Arial, Helvetica, sans-serif;
  background: linear-gradient(180deg, #f1f7f2 0%, var(--background) 220px);
  color: var(--text);
  line-height: 1.6;
}

a {
  color: var(--primary-dark);
}

a:hover {
  color: var(--primary);
}

.container {
  width: min(100% - 32px, 920px);
  margin: 0 auto;
}

.header {
  padding: 56px 0 36px;
  background: linear-gradient(135deg, var(--primary-dark), var(--primary));
  color: #ffffff;
  box-shadow: var(--shadow);
}

.header h1 {
  margin: 0 0 12px;
  font-size: clamp(2rem, 5vw, 3rem);
  line-height: 1.1;
}

.header p {
  margin: 0;
  color: rgba(255, 255, 255, 0.88);
  font-size: 1rem;
}

main.container {
  margin-top: -18px;
  margin-bottom: 32px;
  padding: 32px;
  background: var(--surface);
  border: 1px solid var(--border);
  border-radius: 20px;
  box-shadow: var(--shadow);
}

section + section {
  margin-top: 28px;
  padding-top: 28px;
  border-top: 1px solid var(--border);
}

h2 {
  margin: 0 0 12px;
  font-size: 1.35rem;
  color: var(--primary-dark);
}

p,
ul {
  margin: 0;
}

ul {
  padding-left: 20px;
}

li + li {
  margin-top: 8px;
}

strong {
  color: #111827;
}

.footer {
  padding: 0 0 32px;
}

.footer .container {
  padding: 20px 24px;
  background: var(--surface-alt);
  border: 1px solid var(--border);
  border-radius: 16px;
  color: var(--muted);
  text-align: center;
}

@media (max-width: 640px) {
  .header {
    padding: 40px 0 28px;
  }

  main.container {
    padding: 24px 20px;
    border-radius: 16px;
  }

  .footer .container {
    padding: 18px;
  }
}