:root {
  --bg: #0b0c10;
  --card: #121317;
  --text: #e7e9ee;
  --muted: #a5adba;
  --link: #7aa2ff;
  --accent: #9ae6b4;
  --border: #24262d;
}

* { box-sizing: border-box; }
html, body { margin: 0; padding: 0; background: var(--bg); color: var(--text); font-family: system-ui, -apple-system, "Segoe UI", Roboto, "Noto Sans JP", sans-serif; }
a { color: var(--link); text-decoration: none; }
a:hover { text-decoration: underline; }

.site-header, .site-footer { border-bottom: 1px solid var(--border); }
.site-footer { border-top: 1px solid var(--border); border-bottom: none; }
.site-header, .site-footer { display: flex; align-items: center; justify-content: space-between; padding: 12px 20px; background: #0f1015; }
.brand { font-weight: 700; letter-spacing: .2px; }

.container { max-width: 880px; margin: 32px auto; padding: 0 20px; }

.card { background: var(--card); border: 1px solid var(--border); border-radius: 14px; padding: 20px; }
.list { list-style: none; padding: 0; margin: 12px 0 0 0; }
.list li { padding: 10px 12px; border-bottom: 1px dashed var(--border); }
.list li:last-child { border-bottom: none; }
.meta { color: var(--muted); font-size: .9rem; }

.prose { line-height: 1.8; }
.prose h1, .prose h2, .prose h3 { margin-top: 1.6em; }
.prose h1 { font-size: 1.9rem; }
.prose h2 { font-size: 1.4rem; }
.prose h3 { font-size: 1.2rem; }
.prose code { background: #1a1b22; padding: .1em .3em; border-radius: 6px; }
.prose blockquote { border-left: 3px solid var(--border); padding-left: 12px; color: var(--muted); }