* {
  margin: 0;
  padding: 0;
  box-sizing: border-box;
}
body {
  font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, Helvetica, Arial, sans-serif;
  line-height: 1.6;
  color: #333;
  background: #f8f9fa;
}
.container {
  max-width: 800px;
  margin: 0 auto;
  padding: 40px 20px;
}
header {
  text-align: center;
  margin-bottom: 50px;
}
h1 {
  font-size: 2.8rem;
  margin-bottom: 10px;
  color: #111;
}
.subtitle {
  font-size: 1.3rem;
  color: #666;
  margin-bottom: 20px;
}
.links a {
  display: inline-block;
  margin: 0 12px;
  color: #0066cc;
  text-decoration: none;
  font-weight: 500;
}
.links a:hover {
  text-decoration: underline;
}
section {
  background: white;
  padding: 30px;
  border-radius: 12px;
  margin-bottom: 30px;
  box-shadow: 0 4px 12px rgba(0,0,0,0.05);
}
h2 {
  font-size: 1.5rem;
  margin-bottom: 15px;
  color: #222;
  border-bottom: 2px solid #eee;
  padding-bottom: 8px;
}
p {
  margin-bottom: 12px;
}
.section-intro {
  color: #666;
  margin-top: -6px;
}
ul {
  padding-left: 20px;
}
li {
  margin-bottom: 8px;
}
footer {
  text-align: center;
  margin-top: 40px;
  color: #888;
  font-size: 0.9rem;
}
.card-list {
  display: grid;
  gap: 14px;
}
.card {
  border: 1px solid #eee;
  border-radius: 10px;
  padding: 16px;
  background: #fafbfc;
}
.card h3 {
  font-size: 1.05rem;
  margin-bottom: 4px;
  color: #111;
}
.card p {
  margin-bottom: 8px;
  color: #555;
}
.meta {
  display: flex;
  flex-wrap: wrap;
  gap: 8px;
  margin-bottom: 8px;
  font-size: 0.82rem;
  color: #666;
}
.tag {
  background: #e8f1fb;
  color: #0066cc;
  border-radius: 999px;
  padding: 2px 8px;
  font-weight: 600;
}
.status {
  border: 1px solid #ddd;
  border-radius: 999px;
  padding: 2px 8px;
}
.status.complete {
  color: #0a7a4a;
  border-color: #bfe8d3;
  background: #eefaf4;
}
.status.in-progress {
  color: #9a6b00;
  border-color: #f0e0a8;
  background: #fff8e6;
}
.filters {
  display: flex;
  flex-wrap: wrap;
  gap: 8px;
  margin-bottom: 14px;
}
.filter-btn {
  font: inherit;
  font-size: 0.85rem;
  background: #fff;
  border: 1px solid #ddd;
  border-radius: 999px;
  padding: 4px 12px;
  cursor: pointer;
  color: #555;
}
.filter-btn.active,
.filter-btn:hover {
  border-color: #0066cc;
  color: #0066cc;
}