:root {
    --primary: #2563eb;
    --text: #1f2937;
    --muted: #6b7280;
    --border: #e5e7eb;
    --bg: #f8fafc;
}

* { box-sizing: border-box; }
body { margin: 0; font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", sans-serif; color: var(--text); background: var(--bg); line-height: 1.6; }
a { color: var(--primary); text-decoration: none; }
a:hover { text-decoration: underline; }
.container { max-width: 1100px; margin: 0 auto; padding: 0 16px; }

.site-header { background: #fff; border-bottom: 1px solid var(--border); position: sticky; top: 0; z-index: 10; }
.header-inner { display: flex; align-items: center; justify-content: space-between; min-height: 64px; gap: 16px; flex-wrap: wrap; }
.logo strong { font-size: 20px; color: var(--text); }
.logo span { display: block; font-size: 12px; color: var(--muted); }
.main-nav { display: flex; flex-wrap: wrap; gap: 12px; }
.main-nav a { color: var(--text); padding: 6px 10px; border-radius: 6px; }
.main-nav a:hover { background: #eff6ff; text-decoration: none; }

.site-main { padding: 24px 0 48px; min-height: 60vh; }
.site-footer { background: #111827; color: #d1d5db; padding: 24px 0; font-size: 14px; }
.site-footer a { color: #fff; }

.hero, .panel, .page-head { background: #fff; border: 1px solid var(--border); border-radius: 12px; padding: 20px; margin-bottom: 20px; }
.hero-text h1 { margin: 0 0 8px; }
.slide-list { display: grid; gap: 12px; }
.slide-item { display: block; color: inherit; border: 1px solid var(--border); border-radius: 8px; overflow: hidden; }
.slide-item img { width: 100%; max-height: 320px; object-fit: cover; display: block; }
.slide-item h2 { margin: 12px; font-size: 18px; }

.panel h3, .page-head h1 { margin-top: 0; }
.sub, .meta, .result-tip { color: var(--muted); font-size: 14px; }
.article-list { list-style: none; padding: 0; margin: 0; }
.article-list li { display: flex; justify-content: space-between; gap: 12px; padding: 12px 0; border-bottom: 1px solid var(--border); }
.article-list li.empty { justify-content: center; color: var(--muted); }
.article-list a { flex: 1; color: var(--text); }

.card-grid { display: grid; grid-template-columns: repeat(auto-fill, minmax(220px, 1fr)); gap: 16px; }
.card { display: block; border: 1px solid var(--border); border-radius: 8px; overflow: hidden; color: inherit; }
.card img { width: 100%; height: 140px; object-fit: cover; }
.card h4, .card p { margin: 10px; }
.card p { color: var(--muted); font-size: 14px; }

.article-detail .meta { display: flex; flex-wrap: wrap; gap: 12px; color: var(--muted); font-size: 14px; margin-bottom: 16px; }
.cover img { max-width: 100%; border-radius: 8px; }
.article-body { line-height: 1.8; }
.article-body img { max-width: 100%; height: auto; }
.tags { margin-top: 20px; }
.tags a { display: inline-block; margin: 0 8px 8px 0; padding: 4px 10px; background: #eff6ff; border-radius: 999px; font-size: 13px; }
.article-nav { display: flex; flex-direction: column; gap: 8px; margin-top: 24px; padding-top: 16px; border-top: 1px solid var(--border); }

.pagination { display: flex; gap: 16px; align-items: center; margin-top: 16px; }
.search-form { display: flex; gap: 8px; margin-top: 12px; }
.search-form input { flex: 1; padding: 10px 12px; border: 1px solid var(--border); border-radius: 8px; }
.search-form button, .guestbook-form button { padding: 10px 18px; background: var(--primary); color: #fff; border: 0; border-radius: 8px; cursor: pointer; }

.guestbook-form label { display: block; margin-bottom: 14px; }
.guestbook-form span { display: block; margin-bottom: 6px; font-weight: 600; }
.guestbook-form input, .guestbook-form textarea { width: 100%; padding: 10px 12px; border: 1px solid var(--border); border-radius: 8px; }
.form-msg { margin-top: 12px; min-height: 20px; }

@media (max-width: 768px) {
    .header-inner { flex-direction: column; align-items: flex-start; }
    .article-list li { flex-direction: column; }
}