:root {
  --ink: #1c2331;
  --muted: #5b6472;
  --accent: #2f6fde;
  --bg: #ffffff;
  --bg-soft: #f5f7fa;
  --border: #e3e8ef;
  --max: 1100px;
}
* { box-sizing: border-box; }
html { -webkit-text-size-adjust: 100%; }
body {
  margin: 0;
  font-family: system-ui, -apple-system, "Segoe UI", Roboto, Arial, sans-serif;
  color: var(--ink);
  background: var(--bg);
  line-height: 1.6;
}
img { max-width: 100%; height: auto; }
a { color: var(--accent); text-decoration: none; }
a:hover { text-decoration: underline; }
.wrap { max-width: var(--max); margin: 0 auto; padding: 0 1.25rem; }
main.full .wrap { max-width: none; padding: 0; }
main { padding: 2rem 0 3rem; }
main.full { padding: 0; }

.site-header { border-bottom: 1px solid var(--border); background: var(--bg); }
.site-header .wrap { display: flex; align-items: center; gap: 1.5rem; min-height: 64px; flex-wrap: wrap; }
.brand { font-weight: 700; font-size: 1.15rem; color: var(--ink); }
.brand img { height: 40px; display: block; }
.site-nav { margin-left: auto; }
.site-nav ul { list-style: none; margin: 0; padding: 0; display: flex; gap: 1.25rem; }
.site-nav a { color: var(--ink); font-weight: 500; }
.site-nav li { position: relative; }
.site-nav li.has-sub > ul {
  display: none; position: absolute; top: 100%; left: 0; min-width: 200px;
  background: var(--bg); border: 1px solid var(--border); border-radius: 6px;
  flex-direction: column; gap: 0; padding: .4rem 0; z-index: 20;
}
.site-nav li.has-sub:hover > ul, .site-nav li.has-sub:focus-within > ul { display: flex; }
.site-nav li.has-sub > ul li { padding: .35rem .9rem; }
.nav-toggle { display: none; margin-left: auto; background: none; border: 1px solid var(--border); border-radius: 6px; font-size: 1.4rem; padding: .1rem .6rem; cursor: pointer; color: var(--ink); }

.site-footer { border-top: 1px solid var(--border); background: var(--bg-soft); padding: 1.5rem 0; margin-top: 2rem; }
.footer-links { list-style: none; display: flex; gap: 1.25rem; padding: 0; margin: 0 0 .5rem; flex-wrap: wrap; }
.copyright { margin: 0; color: var(--muted); font-size: .9rem; }

h1, h2, h3 { line-height: 1.25; }
time { color: var(--muted); font-size: .9rem; }
.post-list { list-style: none; padding: 0; display: grid; gap: 1.25rem; }
.post-item { border: 1px solid var(--border); border-radius: 8px; padding: 1rem 1.25rem; background: var(--bg); }
.post-item time { display: block; margin-bottom: .25rem; }
.post-title { font-weight: 600; font-size: 1.1rem; }
.post-cats { display: inline-block; margin-left: .75rem; font-size: .8rem; color: var(--muted); }
.post-item p { margin: .5rem 0 0; color: var(--muted); }

@media (max-width: 760px) {
  .nav-toggle { display: block; }
  .site-nav { display: none; width: 100%; margin-left: 0; }
  .site-nav.open { display: block; }
  .site-nav ul { flex-direction: column; gap: 0; }
  .site-nav li { padding: .6rem 0; border-top: 1px solid var(--border); }
  .site-nav li.has-sub > ul { position: static; display: flex; border: none; padding-left: 1rem; }
}