* {
  box-sizing: border-box;
}

body {
  margin: 0;
  font-family: "Segoe UI", "Malgun Gothic", sans-serif;
  background: #f4f4f4;
  color: #1a1a1a;
}

.page {
  max-width: 1100px;
  margin: 0 auto;
  padding: 24px;
}

.header {
  display: flex;
  justify-content: space-between;
  gap: 24px;
  align-items: flex-start;
  margin-bottom: 20px;
}

.header h1,
.panel h2 {
  margin: 0 0 8px;
}

.header p,
.notice,
.muted {
  margin: 0;
  color: #666;
  line-height: 1.5;
}

.grid {
  display: grid;
  grid-template-columns: 320px 1fr;
  gap: 16px;
}

.panel {
  background: #fff;
  border: 1px solid #ddd;
  border-radius: 10px;
  padding: 16px;
}

.meta {
  min-width: 220px;
  font-size: 14px;
  line-height: 1.7;
}

.filters {
  display: grid;
  grid-template-columns: repeat(4, minmax(0, 1fr));
  gap: 12px;
}

.filters label {
  display: grid;
  gap: 6px;
}

.filters span {
  font-size: 13px;
  font-weight: 700;
}

.filters input,
.filters select {
  height: 38px;
  border: 1px solid #ccc;
  border-radius: 8px;
  padding: 0 10px;
  font: inherit;
}

.run-item,
.post-item {
  border: 1px solid #e1e1e1;
  border-radius: 8px;
  padding: 12px;
  margin-top: 10px;
}

.run-item strong,
.post-item strong {
  display: block;
  margin-bottom: 6px;
}

.post-item a {
  color: #0b57d0;
  text-decoration: none;
}

.post-item a:hover {
  text-decoration: underline;
}

.stats {
  display: flex;
  gap: 12px;
  flex-wrap: wrap;
  margin-top: 8px;
  font-size: 13px;
}

.badge {
  display: inline-block;
  padding: 4px 8px;
  border-radius: 999px;
  background: #efefef;
}

.empty {
  padding: 24px 0;
  color: #777;
}

@media (max-width: 860px) {
  .header,
  .grid {
    grid-template-columns: 1fr;
    display: grid;
  }

  .filters {
    grid-template-columns: 1fr 1fr;
  }
}

@media (max-width: 560px) {
  .page {
    padding: 16px;
  }

  .filters {
    grid-template-columns: 1fr;
  }
}