:root {
    --bg: #f5fbfa;
    --card: #ffffff;
    --text: #173330;
    --muted: #647774;
    --accent: #188878;
    --accent-dark: #0f6558;
    --soft: #e7f5f2;
    --border: #d8ebe7;
}

body {
    margin: 0;
    background: #f5fbfa;
    color: #173330;
    font-family: Arial, Helvetica, sans-serif;
    line-height: 1.7;
    max-width: 100%;
    overflow-x: hidden;
}

.container {
    width: min(860px, 92%);
    margin: 0 auto;
    padding: 40px 0 60px;
}

.card {
    background: #ffffff;
    border: 1px solid #d8ebe7;
    border-radius: 24px;
    padding: 40px;
    box-shadow: 0 18px 45px rgba(23, 51, 48, 0.08);
}

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

.logo { width: 250px;}

h1 {
	font-family: Georgia, 'Times New Roman', serif;
    font-size: 48px;
    line-height: 1.05;
    margin: 0 0 24px;
    letter-spacing: -1.3px;
}

p {
    margin: 0 0 18px;
    color: #35504d;
}

strong { color: #173330;}

h2 {
	font-family: Georgia, 'Times New Roman', serif;
    line-height: 1.1;
    letter-spacing: -0.5px;
    font-size: 28px;
    margin: 38px 0 14px;
}

.footer-card {
    background: #ffffff;
    border: 1px solid #d8ebe7;
    border-radius: 28px;
    box-shadow: 0 18px 45px rgba(23, 51, 48, 0.08);
    margin: 34px 0 40px;
    padding: 24px;
    font-size: 13px;
    color: #647774;
    text-align: center;
}

.footer-card a {
    color: #0f6558;
    font-weight: 700;
}

@media (max-width: 820px) {
  .hero,
  .hero-grid,
  .layout {
    grid-template-columns: 1fr;
  }

  .hero-card,
  .quiz-card,
  .content,
  .sidebar,
  .card,
  .footer-card {
    padding: 22px;
  }
}

@media (max-width: 720px) {
    .card { padding: 28px;}

    h1 { font-size: 38px;}
}

@media (max-width: 600px) {
  body {
    font-size: 16px;
    line-height: 1.6;
  }

  h1 {
    font-size: clamp(32px, 10vw, 42px);
    line-height: 1.08;
  }

  h2 {
    font-size: 26px;
    line-height: 1.15;
  }

  p,
  li {
    font-size: 16px;
  }
}