:root {
  --bg: #ffffff;
  --fg: #1b1b1b;
  --muted: #666;
  --link: #144a9f;
  --border: #ddd;
  --maxw: 980px;
}
* { box-sizing: border-box; }
html { scrollbar-gutter: stable both-edges; overflow-y: scroll; }
body {
  margin: 0;
  font-family: Georgia, "Times New Roman", serif;
  color: var(--fg);
  background: var(--bg);
  line-height: 1.45;
}
.site-header {
  max-width: var(--maxw);
  margin: 0 auto;
  padding: 12px 18px 10px;
  border-bottom: 1px solid var(--border);
}
.logo-wrap { display: block; text-align: center; }
.logo-wrap img {
  max-width: min(620px, 94vw);
  width: 100%;
  height: auto;
}
.tagline {
  margin: 8px 0 10px;
  text-align: center;
  color: var(--muted);
  font-size: 0.95rem;
}
.nav {
  display: flex;
  flex-wrap: wrap;
  justify-content: center;
  gap: 10px 16px;
  font-size: 0.95rem;
}
.nav a { color: var(--fg); text-decoration: none; }
.nav a:hover { text-decoration: underline; }
.container {
  max-width: var(--maxw);
  margin: 16px auto 64px;
  padding: 0 18px;
}
.home-list {
  margin: 0;
  padding-left: 22px;
}
.home-list li { margin: 11px 0; }
.home-list a {
  color: var(--link);
  text-decoration: none;
  font-size: 1.14rem;
}
.home-list a:hover { text-decoration: underline; }
.post {
  max-width: 860px;
  margin: 0 auto;
}
.post h1 { margin: 0 0 12px; font-size: clamp(1.6rem, 2.2vw, 2rem); }
.post p { margin: 0 0 12px; }
.post img { max-width: 100%; height: auto; }
.meta {
  color: var(--muted);
  font-size: 0.9rem;
  margin-bottom: 18px;
}
.page-content h1 { margin-top: 0; }
.page-content img { max-width: 100%; height: auto; }
.site-footer {
  max-width: var(--maxw);
  margin: 32px auto 46px;
  padding: 14px 18px 0;
  border-top: 1px solid var(--border);
  color: var(--muted);
  text-align: center;
  font-size: 0.9rem;
}
.updates-box {
  border: 1px solid var(--border);
  border-radius: 10px;
  padding: 14px;
  background: #fafafa;
}
.updates-box form {
  display: grid;
  gap: 10px;
  max-width: 380px;
}
.updates-box button {
  width: fit-content;
}
.updates-box .meta {
  margin: 10px 0 0;
}
input[type="email"] {
  width: 100%;
  max-width: 360px;
  padding: 8px 10px;
  border: 1px solid var(--border);
  border-radius: 8px;
}
button, .btn {
  padding: 8px 12px;
  border: 1px solid #ccc;
  border-radius: 8px;
  background: #efefef;
  color: var(--fg);
  text-decoration: none;
  cursor: pointer;
}
button:hover, .btn:hover { background: #e6e6e6; }
@media (max-width: 700px) {
  .home-list a { font-size: 1.04rem; }
}