:root {
  --ink: #1a1a1a;
  --muted: #6b6b6b;
  --accent: #7a3b8a;
  --border: #e4e4e4;
  --bg: #fdfdfd;
}

* { box-sizing: border-box; }

body {
  margin: 0;
  background: var(--bg);
  color: var(--ink);
  font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", Helvetica, Arial, sans-serif;
  line-height: 1.55;
}

.wrap {
  max-width: 860px;
  margin: 0 auto;
  padding: 0 20px;
}

.site-header {
  border-bottom: 1px solid var(--border);
  padding: 18px 0;
}
.site-header .wrap {
  display: flex;
  justify-content: space-between;
  align-items: center;
  flex-wrap: wrap;
  gap: 10px;
}
.site-title {
  font-weight: 700;
  font-size: 1.15rem;
  color: var(--ink);
  text-decoration: none;
}
.site-header nav a {
  margin-left: 18px;
  color: var(--muted);
  text-decoration: none;
  font-size: 0.95rem;
}
.site-header nav a:first-child { margin-left: 0; }
.site-header nav a:hover { color: var(--accent); }

main.wrap { padding: 32px 20px 60px; }

h1, h2 { line-height: 1.25; }

a { color: var(--accent); }

.seminar-list {
  list-style: none;
  margin: 0;
  padding: 0;
}
.seminar-card {
  display: flex;
  gap: 16px;
  align-items: flex-start;
  padding: 16px 0;
  border-bottom: 1px solid var(--border);
}
.seminar-card.past { opacity: 0.7; }
.seminar-card .thumb {
  width: 96px;
  height: 96px;
  object-fit: cover;
  border-radius: 6px;
  border: 1px solid var(--border);
  flex-shrink: 0;
}

.thumb.thumb-photo {
  object-fit: cover;
  border-radius: 50%;
}
.thumb.thumb-photo-sm {
  width: 56px;
  height: 56px;
  object-fit: cover;
  border-radius: 50%;
  align-self: center;
}

.seminar-header {
  display: flex;
  gap: 20px;
  align-items: flex-start;
  margin: 16px 0;
}
.speaker-photo {
  width: 130px;
  height: 130px;
  object-fit: cover;
  border-radius: 50%;
  border: 1px solid var(--border);
  flex-shrink: 0;
}
@media (max-width: 480px) {
  .seminar-header { flex-direction: column; align-items: center; text-align: center; }
}

.seminar-meta p { margin: 4px 0; }
.tags { margin-top: 8px; }
.tag {
  display: inline-block;
  background: #f1e7f4;
  color: var(--accent);
  border-radius: 999px;
  padding: 2px 10px;
  margin-right: 6px;
  font-size: 0.8rem;
}

img.flyer {
  max-width: 100%;
  border: 1px solid var(--border);
  border-radius: 8px;
  margin: 20px 0;
}

.site-footer {
  border-top: 1px solid var(--border);
  padding: 20px 0 40px;
  color: var(--muted);
  font-size: 0.9rem;
}

#calendar {
  margin-top: 20px;
  background: #fff;
  border: 1px solid var(--border);
  border-radius: 8px;
  padding: 12px;
}

@media (max-width: 480px) {
  .seminar-card { flex-direction: column; }
  .seminar-card .thumb { width: 100%; height: auto; max-height: 180px; }
}