:root {
  --bg: #050205;
  --text: #f7f5f7;
  --link: #7fa0ba;
  --border: #474347;
  --btn-bg: #9c989c;
  --btn-text: #ffffff;
  --nav-bg: #000000;
}
* { box-sizing: border-box; }
html { -webkit-text-size-adjust: 100%; }
body {
  margin: 0;
  background: var(--bg);
  color: var(--text);
  font-family: "Karla", "Hiragino Kaku Gothic ProN", "Noto Sans JP", sans-serif;
  line-height: 1.8;
}
a { color: var(--link); }
img { max-width: 100%; height: auto; display: block; }

.site-header {
  background: var(--nav-bg);
  text-align: center;
  padding: 24px 16px 8px;
  position: relative;
}
.logo img { margin: 0 auto; max-height: 120px; width: auto; }
.site-header nav ul {
  list-style: none; margin: 16px 0 0; padding: 0;
  display: flex; flex-wrap: wrap; justify-content: center; gap: 4px 20px;
}
.site-header nav a {
  color: #fcfffe; text-decoration: none; font-size: 13px; letter-spacing: .08em;
}
.site-header nav a.current, .site-header nav a:hover { border-bottom: 1px solid #fcfffe; }
.menu-toggle { display: none; }

main { max-width: 820px; margin: 0 auto; padding: 32px 16px 64px; }
h1 { font-size: 22px; letter-spacing: .08em; text-align: center; margin: 0 0 32px; }
hr { border: 0; border-top: 1px solid var(--border); margin: 32px 0; }

.row { display: flex; gap: 24px; margin-bottom: 16px; }
.row .col { flex: 1; min-width: 0; }
.image { margin: 16px auto; }
.image img { margin: 0 auto; }
.text blockquote { border-left: 3px solid var(--border); margin: 16px 0; padding: 4px 16px; }
.text p { margin: 0 0 .4em; }

.video { position: relative; aspect-ratio: 16 / 9; margin: 16px 0; }
.video iframe { position: absolute; inset: 0; width: 100%; height: 100%; border: 0; }

.btn-wrap { text-align: center; margin: 24px 0; }
.btn {
  display: inline-block; background: var(--btn-bg); color: var(--btn-text);
  text-decoration: none; padding: 12px 32px; min-width: 240px; letter-spacing: .05em;
}
.btn:hover { opacity: .85; }

.card {
  display: flex; gap: 16px; align-items: center; border: 1px solid var(--border);
  padding: 12px; margin: 16px 0; text-decoration: none; color: var(--text);
}
.card img { width: 120px; flex-shrink: 0; object-fit: cover; }
.card span { display: flex; flex-direction: column; min-width: 0; }
.card small { color: #b9b5b9; overflow-wrap: anywhere; }

.post-list { display: grid; grid-template-columns: repeat(auto-fill, minmax(240px, 1fr)); gap: 24px; }
.post-card { text-decoration: none; color: var(--text); display: block; }
.post-card img { aspect-ratio: 3 / 2; object-fit: cover; width: 100%; }
.post-card span { display: block; padding-top: 8px; }
.post-card time, article time { color: #b9b5b9; font-size: 13px; display: block; }
article h1 { text-align: left; margin: 4px 0 24px; }
.back { margin-top: 48px; text-align: center; }

footer { text-align: center; font-size: 12px; color: #8a868a; padding: 24px 16px 40px; }

@media (max-width: 640px) {
  .row { flex-direction: column; gap: 0; }
  .menu-toggle {
    display: block; position: absolute; top: 16px; right: 16px;
    background: none; border: 0; color: #fcfffe; font-size: 24px; cursor: pointer;
  }
  .site-header nav { display: none; }
  body.nav-open .site-header nav { display: block; }
  .site-header nav ul { flex-direction: column; gap: 10px; padding-bottom: 16px; }
  .btn { min-width: 0; width: 100%; }
}
.post-card .noimg {
  aspect-ratio: 3 / 2; display: flex; align-items: center; justify-content: center;
  border: 1px solid var(--border); color: #8a868a; letter-spacing: .2em; font-size: 13px;
}