* { box-sizing: border-box; }
body {
  margin: 0;
  font-family: Arial, Helvetica, sans-serif;
  background: #fff;
  color: #000;
  line-height: 1.5;
}
header {
  border-bottom: 1px solid #000;
  padding: 0.75rem 1rem;
}
nav {
  display: flex;
  gap: 1rem;
  flex-wrap: wrap;
}
nav a {
  color: #000;
  text-decoration: none;
}
nav a[aria-current="page"] {
  text-decoration: underline;
}
main {
  max-width: 860px;
  margin: 0 auto;
  padding: 1.5rem 1rem 3rem;
}
.image-placeholder {
  margin-top: 1rem;
  width: 100%;
  min-height: 240px;
  border: 1px dashed #000;
}
.archive-list {
  list-style: none;
  padding: 0;
  margin: 1rem 0 0;
}
.archive-list li {
  margin-bottom: 1.5rem;
  padding-bottom: 1rem;
  border-bottom: 1px solid #ddd;
}
.meta {
  margin: 0.25rem 0;
  font-size: 0.95rem;
}
form {
  display: grid;
  gap: 0.75rem;
  max-width: 600px;
}
input, textarea, button {
  font: inherit;
  padding: 0.5rem;
  border: 1px solid #000;
  background: #fff;
  color: #000;
}
button {
  width: fit-content;
  cursor: pointer;
}
.archive-article img {
  max-width: 100%;
  height: auto;
}
pre {
  overflow-x: auto;
  border: 1px solid #ddd;
  padding: 0.75rem;
}
@media (max-width: 640px) {
  main { padding: 1rem 0.75rem 2rem; }
}