.page-about {
  --color-bg-dark: #1a1a2e;
  --color-bg-warm: #f5f0eb;
  --color-blue: #1a237e;
  --color-orange: #ff6f00;
  --color-white: #ffffff;
  --color-gray-light: #b0bec5;
  --color-border-warm: #d7ccc8;
  --color-bg-hover: #2c2c3e;
  --font-heading: 'Impact', 'Arial Black', 'Helvetica Neue', sans-serif;
  --font-body: 'Georgia', 'Times New Roman', 'Songti SC', serif;
  --max-width: 1200px;
  --gap: 1.5rem;
  --radius: 0.25rem;

  background-color: var(--color-bg-dark);
  color: var(--color-white);
  font-family: var(--font-body);
  line-height: 1.6;
}

.page-about .container {
  max-width: var(--max-width);
  margin: 0 auto;
  padding: 0 1rem;
}

/* breadcrumb */
.page-about .breadcrumb {
  font-size: 0.75rem;
  text-transform: uppercase;
  letter-spacing: 0.05em;
  padding: 1rem 0 0 1rem;
}
.page-about .breadcrumb a,
.page-about .breadcrumb span {
  color: var(--color-gray-light);
  text-decoration: none;
}
.page-about .breadcrumb a:hover {
  color: var(--color-orange);
}
.page-about .breadcrumb [aria-current="location"] {
  color: var(--color-orange);
  font-weight: 700;
}

/* hero */
.page-about .about-hero {
  padding: 2rem 0 0;
}
.page-about .about-hero-inner {
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 2rem;
}
.page-about .about-hero-text {
  text-align: center;
}
.page-about .page-title {
  font-family: var(--font-heading);
  font-size: 3rem;
  font-weight: 400;
  line-height: 1.1;
  margin: 0 0 0.5rem;
  color: var(--color-white);
}
.page-about .about-hero-tagline {
  font-size: 1rem;
  color: var(--color-gray-light);
  margin-bottom: 1.5rem;
}
.page-about .btn {
  display: inline-block;
  padding: 0.65rem 1.8rem;
  background-color: var(--color-blue);
  color: var(--color-white);
  font-family: var(--font-heading);
  font-size: 0.85rem;
  text-transform: uppercase;
  letter-spacing: 0.05em;
  text-decoration: none;
  border: none;
  border-radius: var(--radius);
  transition: background-color 0.2s, box-shadow 0.2s;
}
.page-about .btn:hover {
  background-color: var(--color-orange);
  box-shadow: 0 0 0 3px rgba(255,111,0,0.3);
}
.page-about .btn-sm {
  padding: 0.45rem 1.2rem;
  font-size: 0.75rem;
}
.page-about .about-hero-visual {
  width: 100%;
  max-width: 600px;
}
.page-about .about-hero-img {
  width: 100%;
  height: auto;
  display: block;
  border-radius: var(--radius);
}

/* section heading */
.page-about .section-heading {
  font-family: var(--font-heading);
  font-size: 2rem;
  font-weight: 400;
  color: var(--color-orange);
  margin: 0 0 1rem;
  position: relative;
}
.page-about .section-heading::after {
  content: '';
  display: block;
  width: 3rem;
  height: 3px;
  background-color: var(--color-orange);
  margin-top: 0.25rem;
}

/* brand story */
.page-about .about-story {
  padding: 3rem 0;
  background-color: var(--color-bg-hover);
}
.page-about .about-story-inner {
  display: flex;
  flex-direction: column;
  gap: 2rem;
}
.page-about .about-story-content {
  flex: 2;
}
.page-about .about-story-content p {
  margin-bottom: 1rem;
  color: var(--color-gray-light);
}
.page-about .about-story-content a {
  color: var(--color-orange);
  text-decoration: underline;
}
.page-about .about-story-quote {
  flex: 1;
  background-color: rgba(255,111,0,0.08);
  padding: 1.5rem;
  border-left: 4px solid var(--color-orange);
  border-radius: 0 var(--radius) var(--radius) 0;
  position: relative;
}
.page-about .about-story-quote blockquote p {
  font-size: 1.15rem;
  font-style: italic;
  color: var(--color-white);
  margin: 0;
}
.page-about .about-story-quote blockquote footer {
  margin-top: 0.75rem;
  font-size: 0.8rem;
  color: var(--color-gray-light);
  text-align: right;
}
.page-about .about-story-quote::before {
  content: '“';
  font-size: 4rem;
  line-height: 1;
  color: var(--color-orange);
  opacity: 0.3;
  position: absolute;
  top: -0.25rem;
  left: 0.5rem;
  font-family: serif;
}

/* data coverage */
.page-about .about-data {
  padding: 3rem 0;
}
.page-about .about-data-layout {
  display: flex;
  flex-direction: column;
  gap: 2rem;
}
.page-about .about-data-text {
  flex: 3;
}
.page-about .about-data-text p {
  color: var(--color-gray-light);
  margin-bottom: 1rem;
}
.page-about .about-data-img {
  width: 100%;
  height: auto;
  display: block;
  margin-top: 1rem;
  border-radius: var(--radius);
}
.page-about .about-data-timeline {
  flex: 2;
  display: flex;
  flex-direction: column;
  gap: 1rem;
  position: relative;
  padding-left: 1.5rem;
  border-left: 3px solid var(--color-blue);
}
.page-about .timeline-item {
  display: flex;
  flex-direction: column;
  padding: 0.75rem 1rem;
  background-color: var(--color-bg-hover);
  border-radius: var(--radius);
  transition: background-color 0.2s, transform 0.2s;
  cursor: default;
}
.page-about .timeline-item:hover,
.page-about .timeline-item:focus-visible {
  background-color: var(--color-blue);
  transform: translateX(4px);
}
.page-about .timeline-year {
  font-family: var(--font-heading);
  font-size: 1.3rem;
  font-weight: 700;
  color: var(--color-white);
}
.page-about .timeline-label {
  font-size: 0.75rem;
  color: var(--color-gray-light);
  text-transform: uppercase;
  letter-spacing: 0.05em;
}

/* service features */
.page-about .about-features {
  padding: 3rem 0;
  background-color: var(--color-bg-hover);
}
.page-about .about-features-grid {
  display: grid;
  grid-template-columns: 1fr;
  gap: 1.5rem;
  margin-top: 1.5rem;
}
.page-about .feature-card {
  background-color: var(--color-bg-dark);
  padding: 1.5rem;
  border-radius: var(--radius);
  border: 1px solid var(--color-border-warm);
  transition: border-color 0.2s, background-color 0.2s;
}
.page-about .feature-card:hover {
  border-color: var(--color-orange);
  background-color: #23233a;
}
.page-about .feature-card-icon {
  font-size: 2rem;
  margin-bottom: 0.5rem;
  color: var(--color-orange);
}
.page-about .feature-card-title {
  font-family: var(--font-heading);
  font-size: 1.2rem;
  font-weight: 400;
  margin: 0 0 0.5rem;
  color: var(--color-white);
}
.page-about .feature-card p {
  font-size: 0.9rem;
  color: var(--color-gray-light);
  margin-bottom: 1rem;
}

/* cta */
.page-about .about-cta {
  padding: 3rem 0 4rem;
}
.page-about .about-cta-inner {
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 2rem;
}
.page-about .about-cta-text {
  text-align: center;
}
.page-about .about-cta-text .section-heading {
  color: var(--color-white);
}
.page-about .about-cta-text p {
  color: var(--color-gray-light);
  margin-bottom: 1.5rem;
}
.page-about .about-cta-img {
  width: 100%;
  max-width: 400px;
  height: auto;
  display: block;
  border-radius: var(--radius);
}

/* Media Query: tablet and up */
@media (min-width: 768px) {
  .page-about .about-hero-inner {
    flex-direction: row;
    justify-content: space-between;
    text-align: left;
  }
  .page-about .about-hero-text {
    text-align: left;
    flex: 1;
  }
  .page-about .page-title {
    font-size: 5rem;
  }
  .page-about .about-hero-tagline {
    font-size: 1.2rem;
  }
  .page-about .about-hero-visual {
    flex: 1;
    max-width: 550px;
  }
  .page-about .about-story-inner {
    flex-direction: row;
  }
  .page-about .about-story-content {
    flex: 3;
  }
  .page-about .about-story-quote {
    flex: 1;
  }
  .page-about .about-data-layout {
    flex-direction: row;
  }
  .page-about .about-data-text {
    flex: 3;
  }
  .page-about .about-data-timeline {
    flex: 2;
  }
  .page-about .about-features-grid {
    grid-template-columns: repeat(3, 1fr);
  }
  .page-about .about-cta-inner {
    flex-direction: row;
    justify-content: space-between;
    text-align: left;
  }
  .page-about .about-cta-text {
    text-align: left;
    flex: 1;
  }
  .page-about .about-cta-img {
    max-width: 350px;
  }
}
</main>