:root {
  color-scheme: light;
  font-family: 'Segoe UI', Roboto, 'Helvetica Neue', Arial, sans-serif;
  background: #fff;
  color: #1a1a1a;
}

* {
  box-sizing: border-box;
}

body {
  margin: 0;
  min-height: 100vh;
  background: #fff;
}

.page {
  max-width: 1000px;
  margin: 0 auto;
  padding: 2.5rem 1.25rem 4rem;
}

.header {
  background: #fff;
  border-bottom: 1px solid #e5e5e5;
  padding: 1rem 0;
  position: sticky;
  top: 0;
  z-index: 100;
}

.header-content {
  max-width: 1000px;
  margin: 0 auto;
  padding: 0 1.25rem;
  display: flex;
  justify-content: space-between;
  align-items: center;
}

.logo {
  font-size: 1.3rem;
  margin: 0;
  font-weight: 700;
  color: #000;
  text-decoration: none;
}

.nav {
  display: flex;
  gap: 2rem;
}

.nav-link {
  color: #666;
  text-decoration: none;
  font-size: 0.9rem;
  font-weight: 500;
  transition: color 0.15s ease;
}

.nav-link:hover,
.nav-link.active {
  color: #f97316;
}

.page {
  max-width: 1000px;
  margin: 0 auto;
  padding: 2.5rem 1.25rem 4rem;
}

.hero {
  margin-bottom: 2.5rem;
  padding-bottom: 1.5rem;
  border-bottom: 2px solid #e5e5e5;
}

h1 {
  font-size: 2rem;
  margin: 0 0 0.5rem;
  color: #000;
  font-weight: 700;
  letter-spacing: -0.5px;
}

.tagline {
  color: #f97316;
  font-size: 0.95rem;
  margin: 0 0 0.8rem;
  font-weight: 500;
}

.intro {
  color: #666;
  max-width: none;
  line-height: 1.6;
  margin: 0;
  font-size: 0.9rem;
}

.mission {
  color: #666;
  max-width: none;
  line-height: 1.6;
  margin: 0;
  font-size: 0.9rem;
}

.toolbar {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  gap: 0.75rem;
  margin-bottom: 1.5rem;
}

.button {
  border: none;
  border-radius: 4px;
  padding: 0.7rem 1rem;
  background: #f97316;
  color: #fff;
  font-weight: 600;
  cursor: pointer;
  transition: all 0.15s ease;
  font-size: 0.9rem;
}

.button:hover {
  background: #ea580c;
}

.status {
  color: #666;
  margin: 0;
  font-size: 0.9rem;
}

.models {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(220px, 1fr));
  gap: 1.2rem;
}

.card {
  display: flex;
  flex-direction: column;
  background: #fff;
  border: 1px solid #ddd;
  border-radius: 6px;
  padding: 0;
  overflow: hidden;
  box-shadow: none;
  color: inherit;
  text-decoration: none;
  transition: all 0.15s ease;
}

.card-link:hover {
  transform: translateY(-2px);
  border-color: #f97316;
  box-shadow: 0 2px 8px rgba(0,0,0,0.1);
}

.card h2 {
  font-size: 1rem;
  margin: 0;
  padding: 0.8rem 0.8rem 0;
  line-height: 1.3;
  font-weight: 600;
  color: #000;
}

.card p {
  margin: 0.5rem 1rem 1rem;
  color: #666;
  font-size: 0.85rem;
}

.cover-photo {
  width: 100%;
  height: 150px;
  object-fit: cover;
  border-radius: 0;
  border: none;
  margin: 0;
  flex-shrink: 0;
}

.photos {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(180px, 1fr));
  gap: 0.8rem;
  margin: 1rem 0;
}

.photos img {
  width: 100%;
  height: 140px;
  object-fit: cover;
  border-radius: 6px;
  border: 1px solid #e5e5e5;
}

.files {
  padding-left: 1.2rem;
  margin: 0;
}

.files li + li {
  margin-top: 0.45rem;
}

.description-section {
  margin: 1.5rem 0;
}

.description-section h3 {
  margin-top: 0;
  margin-bottom: 1rem;
  color: #000;
  font-size: 0.95rem;
  font-weight: 600;
}

.pdf-viewer {
  border: 1px solid #ddd;
  border-radius: 6px;
  overflow: hidden;
}

.pdf-viewer iframe {
  display: block;
  border: none;
  width: 100%;
  min-height: 480px;
}

.model-page .models {
  display: block;
  max-width: 900px;
  margin: 0 auto;
}

.model-page .card {
  width: 100%;
}

@media (max-width: 860px) {
  .page {
    padding: 1.75rem 1rem 3rem;
  }

  .header-content {
    flex-direction: column;
    align-items: flex-start;
    gap: 0.75rem;
  }

  .nav {
    gap: 1rem;
    flex-wrap: wrap;
  }

  .hero {
    padding-bottom: 1rem;
  }

  .card h2 {
    padding: 0.9rem 0.9rem 0;
  }

  .card p {
    margin: 0.5rem 0.9rem 1rem;
  }

  .photos img {
    height: 120px;
  }
}

.files li + li {
  margin-top: 0.45rem;
}

.files a {
  color: #f97316;
  text-decoration: none;
  transition: color 0.15s ease;
}

.files a:hover {
  color: #fb923c;
  text-decoration: underline;
}

.empty {
  color: #666;
}

.footer {
  background: #f5f5f5;
  border-top: 1px solid #e5e5e5;
  margin-top: 4rem;
  padding: 2rem 1.25rem 1rem;
}

.footer-content {
  max-width: 1000px;
  margin: 0 auto;
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(250px, 1fr));
  gap: 2rem;
  margin-bottom: 2rem;
}

.footer-section h3 {
  margin: 0 0 0.5rem;
  font-size: 1.1rem;
  color: #000;
}

.footer-section h4 {
  margin: 0 0 0.8rem;
  font-size: 0.95rem;
  color: #000;
  font-weight: 600;
}

.footer-section p {
  margin: 0;
  color: #666;
  font-size: 0.9rem;
  line-height: 1.6;
}

.footer-section ul {
  list-style: none;
  padding: 0;
  margin: 0;
}

.footer-section li {
  margin-bottom: 0.5rem;
}

.footer-section a {
  color: #f97316;
  text-decoration: none;
  font-size: 0.9rem;
}

.footer-section a:hover {
  text-decoration: underline;
}

.footer-bottom {
  max-width: 1000px;
  margin: 0 auto;
  padding: 1rem 0 0;
  border-top: 1px solid #e5e5e5;
  text-align: center;
  color: #999;
  font-size: 0.85rem;
}

.footer-bottom p {
  margin: 0.5rem 0 0;
}