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

html,
html.light {
  color-scheme: light;
  --text: #111;
  --accent: #f80;
  --bg: #eef;
}

html.dark {
  color-scheme: dark;
  --text: #dde;
  --accent: #ec0;
  --bg: #334;
}

@media (prefers-color-scheme: dark) {
  html {
    color-scheme: dark;
    --text: #dde;
    --accent: #ec0;
    --bg: #334;
  }
}

body {
  font-family: system-ui, -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto,
    Oxygen, Ubuntu, Cantarell, "Open Sans", "Helvetica Neue", sans-serif;
  line-height: 1.6;
  color: #333;
}

nav {
  position: fixed;
  top: 0;
  width: 100%;
  background: white;
  box-shadow: 0 2px 10px rgba(0, 0, 0, 1);
  z-index: 1000;
  padding: 1rem 0;
}

nav .container {
  max-width: 1200px;
  margin: 0 auto;
  padding: 0 2rem;
  display: flex;
  justify-content: space-between;
  align-items: center;
}

nav .logo {
  font-size: 1.5rem;
  font-weight: bold;
  color: #3b82f6;
}

nav ul {
  list-style: none;
  display: flex;
  gap: 2rem;
}

nav a {
  text-decoration: none;
  color: #333;
  transition: color 0.3s;
}

nav a:hover {
  color: #3b82f6;
}

.container {
  max-width: 1200px;
  margin: 0 auto;
  padding: 0 2rem;
}

section {
  padding: 5rem 0;
}

section h2 {
  font-size: 2.5rem;
  margin-bottom: 2rem;
  text-align: center;
  color: #1e293b;
}

.hero {
  background: linear-gradient(135deg, #667eea 0%, #764ba2 100%);
  color: white;
  text-align: center;
  padding: 10rem 0 6rem 0;
  margin-top: 60px;
}

.hero h1 {
  font-size: 3.5rem;
  margin-bottom: 1rem;
  animation: fadeInUp 0.8s ease-out;
}

.hero p {
  font-size: 1.3rem;
  margin-bottom: 1.3rem;
  opacity: 0.95;
  animation: fadeInUp 0.8s ease-out 0.2s both;
}

.cta-button {
  display: inline-block;
  background: white;
  color: #667eea;
  padding: 1rem 2.5rem;
  text-decoration: none;
  font-weight: bold;
  font-size: 1.1rem;
  transition: transform 0.3s, box-shadow 0.3s;
  animation: fadeInUp 0.8s ease-out 0.4s both;
}

.cta-button:hover {
  transform: translateY(-3px);
  box-shadow: 0 10px 25px rgba(0, 0, 0, 0.2);
}

@keyframes fadeInUp {
  from {
    opacity: 0;
    transform: translateY(30px);
  }
  to {
    opacity: 1;
    transform: translateY(0);
  }
}

.about {
  background: #f8facf;
}

.about-content {
  max-width: 800px;
  margin: 0 auto;
  text-align: center;
  font-size: 1.1rem;
  line-height: 1.8;
}

.steps {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(250px, 1fr));
  gap: 2rem;
  margin-top: 3rem;
}

.step {
  background: white;
  padding: 2rem;
  border-radius: 2rem;
  box-shadow: 0 4px 6px rgba(0.1);
  text-align: center;
  transition: transform 0.3s;
}

.step:hover {
  transform: translateY(-5px);
}

.step-number {
  display: inline-block;
  width: 50px;
  height: 50px;
  background: #3b82f6;
  color: white;
  border-radius: 50%;
  line-height: 50px;
  font-size: 1.5rem;
  font-weight: bold;
  margin-bottom: 1rem;
}

.step h3 {
  margin-bottom: 1rem;
  color: #1e293b;
}

.projects {
  background: #f8fafc;
}

.project-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
  gap: 2rem;
  margin-top: 3rem;
}

.project-card {
  background: white;
  border-radius: 10px;
  overflow: hidden;
  box-shadow: 0 4px 6px rgba(0, 0, 0, 0.1);
  transition: transform 0.3s;
}
.project-card:hover {
  transform: translateY(-5px);
}

.project-image {
  width: 100%;
  height: 200px;
  background: linear-gradient(132deg, #667eea 0%, #764ba2 100%);
  display: flex;
  align-items: center;
  justify-content: center;
  color: white;
  font-size: 1.2rem;
}

.project-content {
  padding: 1.5rem;
}

.project-content h3 {
  margin-bottom: 0.5rem;
  color: #1e293b;
}

.requirements-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
  gap: 2rem;
  margin-top: 3rem;
}

.requirement-box {
  background: white;
  padding: 2rem;
  border-radius: 10px;
  box-shadow: 0 rpx 6px rgba(0, 0, 0, 0.1);
}

.requirement-box h3 {
  color: #3b82f6;
  margin-bottom: 1rem;
}

.requirement-box ul {
  list-style: none;
  padding-left: 0;
}

.requirement-box li {
  padding: 0.5rem 0;
  padding-left: 1.5rem;
  position: relative;
}

.requirement-box li:before {
  content: "✓";
  position: absolute;
  left: 0;
  color: #10b981;
  font-weight: bold;
}

.faq {
  background: #f8fafc;
}

.faq-list {
  max-width: 800px;
  margin: 3rem auto 0;
}

.faq-item {
  background: white;
  margin-bottom: 1rem;
  border-radius: 10px;
  overflow: hidden;
  box-shadow: 0 2 px 4px rgba(0, 0, 0, 0.1);
}

.faq-question {
  padding: 1.5rem;
  font-weight: bold;
  cursor: pointer;
  display: flex;
  justify-content: space-between;
  align-items: center;
  transition: background 0.3s;
}

.faq-question:hover {
  background: #f8fafc;
}

.faq-question::after {
  content: "▼";
}

.faq-answer {
  padding: 0 1.5rem 1.5rem;
  color: #64748b;
}

.examples-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(350px, 1fr));
  gap: 2rem;
  margin-top: 3rem;
}

.examples-card {
  background: white;
  border-radius: 10px;
  padding: 2rem;
  box-shadow: 0 4px 6px rgba(0, 0, 0, 0.1);
  border-left: 4px solid #10b981;
}

.example-card h3 {
  color: #1e293b;
  margin-bottom: 1rem;
}

.example-card p {
  color: #64748b;
  margin-bottom: 0.5rem;
}

.resources {
  background: #f8facf;
}

.resource-list {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(250px, 1fr));
  gap: 1.5rem;
  margin-top: 3rem;
}

.resource-item {
  background: white;
  padding: 1.5rem;
  border-radius: 10px;
  box-shadow: 0 2px 4px rgba(0, 0, 0, 0.1);
  text-align: center;
}

.resource-item h3 {
  color: #3b82f6;
  margin-bottom: 0.5rem;
  font-size: 1.1rem;
}

.submission {
  background: linear-gradient(135deg, #667eea 0%, #764ba2 100%);
  color: white;
  text-align: center;
}

.submission h2 {
  color: white;
}

.form {
  background: white;
  padding: 3rem;
  border-radius: 10px;
  margin-top: 2rem;
  color: #64748b;
  font-style: italic;
}