/* Root Variables */
:root {
  --primary-color: #81b71a;
  --secondary-color: #4ebbf7;
  --tertiary-color: #6d6d6d;
  --body-font: Arial, sans-serif;
  --title-font: Helvetica, Arial, sans-serif;
}

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

/* Base Styles */
body {
  font-family: var(--body-font);
  line-height: 1.6;
  max-width: 1100px;
  margin: 0 auto;
  padding: 20px;
  font-size: 20px;
}

/* Typography */
h1,
h2,
h3,
h4,
h5,
h6 {
  font-family: var(--title-font);
}

p,
span,
a,
li,
button {
  font-family: var(--body-font);
}

.product-showcase {
  max-width: 1200px;
  margin: 60px auto;
  padding: 0 20px;
}

.showcase-header {
  text-align: center;
  margin-bottom: 50px;
}

.showcase-header h2 {
  font-size: 36px;
  line-height: 1.4;
  color: var(--tertiary-color);
}

.system-explanation {
  text-align: center;
  margin-bottom: 40px;
}

.system-explanation h3 {
  font-size: 24px;
  color: var(--tertiary-color);
  margin-bottom: 20px;
}

.system-explanation p {
  font-size: 20px;
  color: var(--tertiary-color);
}

.feature-grid {
  display: grid;
  grid-template-columns: 1fr;
  gap: 20px;
  margin-bottom: 50px;
}

.feature-item {
  background: #f8f8f8;
  padding: 25px;
  border-radius: 8px;
}

.feature-item h4 {
  font-size: 24px;
  color: var(--primary-color);
  margin-bottom: 15px;
}

.feature-item p {
  font-size: 18px;
  line-height: 1.6;
  color: var(--tertiary-color);
}

/* Approaches Section */
.approaches-showcase {
  margin-top: 60px;
}

.approaches-showcase h3 {
  font-size: 28px;
  color: var(--tertiary-color);
  margin-bottom: 40px;
  text-align: center;
}

.approach-grid {
  display: grid;
  grid-template-columns: 1fr;
  gap: 30px;
}

.approach-item {
  display: grid;
  grid-template-columns: auto 1fr;
  gap: 30px;
  align-items: start;
  background: #f8f8f8;
  padding: 30px;
  border-radius: 12px;
}

.approach-image {
  width: 250px;
  position: relative;
  margin: 0;
}

.approach-image img {
  width: 100%;
  height: auto;
  display: block;
  border-radius: 8px;
  border: 4px solid white;
  box-shadow: 0 4px 12px rgba(0, 0, 0, 0.1);
}

.approach-image figcaption {
  position: absolute;
  bottom: 15px;
  left: 0;
  background: var(--primary-color);
  color: white;
  padding: 8px 16px;
  font-weight: bold;
  font-size: 16px;
  border-radius: 0 4px 4px 0;
}

.approach-content {
  flex: 1;
}

.approach-content h4 {
  font-size: 24px;
  color: var(--primary-color);
  margin-bottom: 15px;
  display: flex;
  align-items: center;
  gap: 10px;
}

.approach-content h4::before {
  content: "";
  width: 30px;
  height: 3px;
  background: var(--primary-color);
  display: inline-block;
}

.approach-content p {
  font-size: 18px;
  line-height: 1.6;
  color: var(--tertiary-color);
  margin: 0;
}

/* Highlight Styles */
.highlight-text {
  color: var(--tertiary-color);
  font-weight: bold;
  border-bottom: 3px solid var(--tertiary-color);
  font-size: 32px;
}

.highlight-blue {
  color: var(--secondary-color);
  font-weight: bold;
  border-bottom: 3px solid var(--secondary-color);
}

.emphasis {
  font-weight: bold;
  color: var(--primary-color);
}

@media (max-width: 1024px) {
  .approach-item {
    grid-template-columns: 200px 1fr;
    gap: 25px;
    padding: 25px;
  }
}

@media (max-width: 768px) {
  .showcase-header h2 {
    font-size: 28px;
  }

  .system-explanation h3 {
    font-size: 22px;
  }

  .system-explanation p {
    font-size: 18px;
  }

  .approach-item {
    grid-template-columns: 1fr;
    gap: 20px;
  }

  .approach-image {
    width: 100%;
    max-width: 300px;
    margin: 0 auto;
  }

  .approach-content h4 {
    font-size: 22px;
  }

  .approach-content p {
    font-size: 16px;
  }
}

/* Feature Grid Styles */
.feature-grid {
  display: grid;
  grid-template-columns: 1fr;
  gap: 25px;
  margin: 30px 0 50px;
}

.feature-item {
  background: linear-gradient(to right bottom, #f8f8f8, #ffffff);
  padding: 30px;
  border-radius: 12px;
  border: 1px solid rgba(0, 0, 0, 0.05);
  box-shadow: 0 4px 15px rgba(0, 0, 0, 0.05);
  transition: transform 0.2s ease, box-shadow 0.2s ease;
}

.feature-item:hover {
  transform: translateY(-2px);
  box-shadow: 0 6px 20px rgba(0, 0, 0, 0.08);
}

.feature-item h4 {
  font-size: 26px;
  color: var(--primary-color);
  margin-bottom: 20px;
  display: flex;
  align-items: center;
  gap: 12px;
}

.feature-item h4::before {
  content: "";
  width: 40px;
  height: 3px;
  background: var(--primary-color);
  border-radius: 2px;
}

.feature-item p {
  font-size: 20px;
  line-height: 1.6;
  color: var(--tertiary-color);
  margin: 0;
}

.feature-item .highlight-text {
  display: inline-block;
  color: var(--primary-color);
  font-weight: 600;
  border-bottom: none;
  background: rgba(129, 183, 26, 0.1);
  padding: 2px 8px;
  border-radius: 4px;
  margin: 2px 0;
}

.feature-item .emphasis {
  color: var(--secondary-color);
  font-weight: bold;
  padding: 0 4px;
}

@media (max-width: 768px) {
  .feature-grid {
    gap: 20px;
  }

  .feature-item {
    padding: 25px;
  }

  .feature-item h4 {
    font-size: 22px;
    margin-bottom: 15px;
  }

  .feature-item h4::before {
    width: 30px;
  }

  .feature-item p {
    font-size: 18px;
  }
}