:root {
  --primary-color: #e74c3c;
  --primary-dark: #c0392b;
  --text-color: #333;
  --heading-color: #2c3e50;
  --link-color: #2980b9;
  --bg-color: #fff;
  --highlight-bg: #f8f9fa;
  --border-color: #eee;
  --gray-text: #7f8c8d;
}

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

body {
  font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, Oxygen,
    Ubuntu, Cantarell, "Open Sans", "Helvetica Neue", sans-serif;
  line-height: 1.6;
  color: var(--text-color);
  background-color: var(--bg-color);
  padding: 0;
  margin: 0;
  font-size: 16px;
  overflow-x: hidden;
  max-width: 480px;
  margin-left: auto;
  margin-right: auto;
}

.container {
  width: 100%;
  padding: 16px;
  margin: 0 auto;
}

/* Typography */
h1,
h2,
h3 {
  color: var(--heading-color);
  margin: 16px 0;
  line-height: 1.3;
}

h1 {
  font-size: 1.8rem;
  margin-top: 0;
  padding-top: 16px;
}

h2 {
  font-size: 1.5rem;
  margin-top: 24px;
}

h3 {
  font-size: 1.25rem;
  margin-top: 20px;
}

p {
  margin: 16px 0;
}

strong {
  color: #222;
}

/* Links and Lists */
a {
  color: var(--link-color);
  text-decoration: none;
}

a:hover,
a:focus {
  text-decoration: underline;
}

ul,
ol {
  margin: 15px 0;
  padding-left: 24px;
}

li {
  margin-bottom: 8px;
}

/* Layout Elements */
header {
  text-align: center;
  padding: 16px 0;
  border-bottom: 1px solid var(--border-color);
}

footer {
  text-align: center;
  padding: 20px 16px;
  margin-top: 32px;
  border-top: 1px solid var(--border-color);
  font-size: 0.9rem;
  color: var(--gray-text);
}

hr {
  border: 0;
  height: 1px;
  background-color: var(--border-color);
  margin: 24px 0;
}

/* Buttons */
.cta-button {
  display: block;
  width: 100%;
  padding: 14px 20px;
  background-color: var(--primary-color);
  color: white;
  border-radius: 8px;
  text-align: center;
  font-weight: bold;
  font-size: 1.1rem;
  margin: 24px 0;
  box-shadow: 0 4px 6px rgba(0, 0, 0, 0.1);
  transition: all 0.3s ease;
}

.cta-button:hover,
.cta-button:focus {
  background-color: var(--primary-dark);
  text-decoration: none;
  transform: translateY(-2px);
  box-shadow: 0 6px 8px rgba(0, 0, 0, 0.15);
}

/* Components */
.hero {
  padding: 20px 0;
  text-align: center;
  background-color: var(--highlight-bg);
  border-radius: 8px;
  margin: 20px 0;
}

.hero-img {
  width: 120px;
  height: 120px;
  margin: 0 auto 16px;
  border-radius: 20px;
  box-shadow: 0 4px 8px rgba(0, 0, 0, 0.1);
  background-color: var(--primary-color);
  padding: 15px;
}

.hero-img img {
  width: 100%;
  height: auto;
}

.feature-card,
.feature-box {
  background-color: var(--highlight-bg);
  border-radius: 8px;
  padding: 20px;
  margin-bottom: 20px;
  box-shadow: 0 2px 4px rgba(0, 0, 0, 0.05);
  border-left: 4px solid var(--primary-color);
}

.feature-card h3,
.feature-box h2 {
  margin-top: 0;
  color: var(--primary-color);
}

.feature-card p,
.feature-box p {
  margin-bottom: 10px;
}

.feature-section {
  background-color: var(--highlight-bg);
  padding: 20px 16px;
  border-radius: 8px;
  margin: 20px 0;
}

.note {
  font-style: italic;
  color: var(--gray-text);
  padding: 12px;
  background-color: var(--highlight-bg);
  border-radius: 6px;
  font-size: 0.9rem;
  text-align: center;
  margin-top: 20px;
}

blockquote {
  border-left: 4px solid var(--primary-color);
  padding: 16px;
  margin: 20px 0;
  background-color: var(--highlight-bg);
  border-radius: 0 6px 6px 0;
}

.steps-container {
  counter-reset: step-counter;
}

.step-item {
  margin-bottom: 20px;
  position: relative;
}

.reward-option {
  padding: 12px;
  background-color: var(--highlight-bg);
  border-radius: 6px;
  margin-bottom: 12px;
}

/* Countdown Button */
.cta-button.countdown {
  background-color: var(--gray-text);
  cursor: wait;
  position: relative;
  overflow: hidden;
}

.countdown-bar {
  position: absolute;
  bottom: 0;
  left: 0;
  height: 4px;
  background-color: var(--primary-color);
  animation-name: countdown-animation;
  animation-timing-function: linear;
  animation-fill-mode: forwards;
}

@keyframes countdown-animation {
  from {
    width: 0;
  }
  to {
    width: 100%;
  }
}

/* Responsive Design */
@media (min-width: 481px) {
  body {
    border-left: 1px solid #ddd;
    border-right: 1px solid #ddd;
    box-shadow: 0 0 10px rgba(0, 0, 0, 0.1);
  }

  h1 {
    font-size: 2rem;
  }

  h2 {
    font-size: 1.6rem;
  }

  .cta-button {
    max-width: 350px;
    margin-left: auto;
    margin-right: auto;
  }
}