:root {
  --bg: #ffffff;
  --fg: #1f2328;
  --muted: #656d76;
  --accent: #1f6feb;
  --border: #d8dee4;
  --soft: #f6f8fa;
  --maxw: 1080px;
}

* { box-sizing: border-box; }
html { -webkit-text-size-adjust: 100%; }
body {
  margin: 0;
  font: 17px/1.65 -apple-system, "Segoe UI", Roboto, Helvetica, Arial, sans-serif;
  color: var(--fg);
  background: var(--bg);
}
a { color: var(--accent); text-decoration: none; }
a:hover { text-decoration: underline; }
img { max-width: 100%; height: auto; }

.wrap { max-width: var(--maxw); margin: 0 auto; padding: 0 20px; }
.skip { position: absolute; left: -9999px; }
.skip:focus { left: 8px; top: 8px; background: #fff; padding: 8px; z-index: 10; }

/* Header */
.site-header { border-bottom: 1px solid var(--border); background: var(--soft); }
.site-header .wrap { padding-top: 22px; padding-bottom: 16px; }
.site-title { margin: 0; font-size: 30px; font-weight: 800; letter-spacing: -.5px; }
.site-title a { color: var(--fg); }
.site-tag { margin: 2px 0 12px; color: var(--muted); }
.site-nav a { margin-right: 18px; font-weight: 600; color: var(--fg); }
.site-nav a:hover { color: var(--accent); }

/* Layout */
.layout { display: grid; grid-template-columns: 1fr 280px; gap: 48px; padding-top: 32px; padding-bottom: 48px; }
.content { min-width: 0; }
.sidebar { font-size: 15px; }
.sidebar h2 { font-size: 14px; text-transform: uppercase; letter-spacing: .06em; color: var(--muted); border-bottom: 1px solid var(--border); padding-bottom: 6px; }
.sidebar ul { list-style: none; margin: 0 0 28px; padding: 0; }
.sidebar li { padding: 3px 0; }
.sidebar .count { color: var(--muted); font-size: 12px; }

/* Post list */
.post-summary { padding: 0 0 28px; margin-bottom: 28px; border-bottom: 1px solid var(--border); }
.post-summary h2 { margin: 0 0 4px; font-size: 24px; }
.post-summary.has-thumb { display: grid; grid-template-columns: 220px 1fr; gap: 22px; align-items: start; }
.post-summary .thumb { display: block; }
.post-summary .thumb img { width: 220px; height: 150px; object-fit: cover; border-radius: 8px; border: 1px solid var(--border); background: var(--soft); display: block; }
.post-summary .summary-text { min-width: 0; }
.post-meta { margin: 0 0 10px; color: var(--muted); font-size: 14px; }
.excerpt { margin: 8px 0; }
.more a { font-weight: 600; }

@media (max-width: 560px) {
  .post-summary.has-thumb { grid-template-columns: 1fr; gap: 10px; }
  .post-summary .thumb img { width: 100%; height: 200px; }
}

/* Single post */
.post-single h1 { font-size: 34px; line-height: 1.2; margin: 0 0 6px; letter-spacing: -.5px; }
.post-body { font-size: 18px; }
.post-body figure { margin: 22px 0; text-align: center; }
.post-body figure img { border: 1px solid var(--border); border-radius: 6px; }
.post-body figcaption { color: var(--muted); font-size: 14px; margin-top: 6px; }
.post-body img { border-radius: 6px; }
.post-body iframe { max-width: 100%; }
.post-tags { margin-top: 28px; padding-top: 16px; border-top: 1px solid var(--border); }
.tag { display: inline-block; background: var(--soft); border: 1px solid var(--border); border-radius: 999px; padding: 2px 11px; margin: 0 6px 6px 0; font-size: 13px; color: var(--muted); }
.tag:hover { text-decoration: none; color: var(--accent); border-color: var(--accent); }

/* Embeds: responsive 16:9 wrapper for videos */
.embed-video { position: relative; padding-bottom: 56.25%; height: 0; margin: 22px 0; }
.embed-video iframe { position: absolute; inset: 0; width: 100%; height: 100%; border: 0; border-radius: 6px; }

/* Panorama / deep-zoom viewer */
.pano-viewer { width: 100%; max-width: 800px; height: 480px; margin: 22px auto; background: #111; border-radius: 8px; }
.pano-caption { text-align: center; color: var(--muted); font-size: 14px; margin-top: -10px; }

/* Pager */
.pager { display: flex; align-items: center; justify-content: space-between; gap: 16px; margin-top: 24px; }
.pager .pages { color: var(--muted); font-size: 14px; }
.pager a { font-weight: 600; }

/* Footer */
.site-footer { border-top: 1px solid var(--border); background: var(--soft); color: var(--muted); }
.site-footer .wrap { padding: 20px; text-align: center; font-size: 14px; }

/* Category index */
.catindex { list-style: none; padding: 0; columns: 2; }
.catindex li { padding: 4px 0; }

@media (max-width: 800px) {
  .layout { grid-template-columns: 1fr; gap: 0; }
  .sidebar { border-top: 1px solid var(--border); padding-top: 24px; margin-top: 8px; }
  .catindex { columns: 1; }
}