:root {
  --bg: #fdfcfa; --fg: #2c3e50; --muted: #8a94a6;
  --accent: #0b7a5c; --card: #ffffff; --border: #e8e6e1;
  --max-w: 760px;
}
* { box-sizing: border-box; margin: 0; padding: 0; }
body {
  background: var(--bg); color: var(--fg);
  font-family: "Segoe UI", "Microsoft YaHei", sans-serif;
  line-height: 1.75;
}
.container { max-width: var(--max-w); margin: 0 auto; padding: 0 1rem; }

/* 顶栏 */
.site-header { border-bottom: 1px solid var(--border); background: var(--card); }
.nav { display: flex; justify-content: space-between; align-items: center; height: 56px; }
.brand { font-weight: 700; font-size: 1.15rem; color: var(--accent); text-decoration: none; }
.nav-links a { margin-left: 1.2rem; color: var(--fg); text-decoration: none; }
.nav-links a:hover { color: var(--accent); }
.nav-links a.active { color: var(--accent); font-weight: 600; }

main.container { padding-top: 2rem; padding-bottom: 3rem; min-height: 60vh; }

/* 文章卡片 */
.post-card { background: var(--card); border: 1px solid var(--border);
  border-radius: 10px; padding: 1.2rem 1.5rem; margin-bottom: 1rem; }
.post-card h2 a { color: var(--fg); text-decoration: none; }
.post-card h2 a:hover { color: var(--accent); }
.post-date { color: var(--muted); font-size: .9rem; display: block; margin: .2rem 0 .5rem; }
.post-summary { color: #55606e; }

/* 正文 */
.post-body h1 { margin-bottom: .3rem; }
.post-body :is(h2, h3) { margin: 1.6rem 0 .8rem; }
.post-body p { margin: .8rem 0; }
.post-body img { max-width: 100%; border-radius: 8px; }
.post-body pre { background: #282c34; color: #e6e6e6; padding: 1rem;
  border-radius: 8px; overflow-x: auto; margin: 1rem 0; }
.post-body code { font-family: Consolas, monospace; font-size: .92em; }
.post-body :not(pre) > code { background: #f0eee9; padding: .1em .35em; border-radius: 4px; }
.post-body blockquote { border-left: 4px solid var(--accent); padding-left: 1rem;
  color: #55606e; margin: 1rem 0; }
.post-body table { border-collapse: collapse; margin: 1rem 0; }
.post-body th, .post-body td { border: 1px solid var(--border); padding: .4rem .8rem; }

/* 上下篇、分页 */
.post-nav, .pagination { display: flex; justify-content: space-between;
  gap: 1rem; margin-top: 2rem; }
.post-nav .right { margin-left: auto; }

/* 页脚 */
.site-footer { border-top: 1px solid var(--border); padding: 1.5rem 0;
  color: var(--muted); font-size: .9rem; text-align: center; }
.error-page { text-align: center; padding: 4rem 0; }

/* ---------- 产品系统增补 ---------- */

/* 产品卡片网格 */
.product-grid { display: grid; grid-template-columns: repeat(auto-fit, minmax(220px, 1fr));
  gap: 1rem; margin-top: 1.5rem; }
.product-card { background: var(--card); border: 1px solid var(--border);
  border-radius: 10px; padding: 1.3rem; display: flex; flex-direction: column; gap: .5rem; }
.product-card h2 a { color: var(--fg); text-decoration: none; }
.product-card h2 a:hover { color: var(--accent); }
.version { color: var(--muted); font-size: .85rem; }
.summary { flex-grow: 1; color: #55606e; font-size: .95rem; }
.download-count { color: var(--muted); font-size: .85rem; }

/* 按钮 */
.btn { display: inline-block; padding: .45rem 1.1rem; border-radius: 8px;
  text-decoration: none; font-size: .95rem; transition: opacity .15s; }
.btn:hover { opacity: .85; }
.btn-primary { background: var(--accent); color: #fff; }
.btn-ghost { border: 1px solid var(--border); color: var(--fg); }
.btn-lg { padding: .7rem 1.8rem; font-size: 1.05rem; margin: 1rem 0 2rem; }
.card-actions { display: flex; gap: .6rem; }
.btn.downloading { opacity: .6; pointer-events: none; }

/* 详情页 */
.product-detail small { color: var(--muted); font-size: .6em; }
.product-detail .meta { color: var(--muted); font-size: .9rem; }
.product-detail :is(h2, h3) { margin: 1.6rem 0 .8rem; }
.sha { font-size: .75rem; word-break: break-all; }