:root{
  --bg:#fbfbf9;
  --card:#ffffff;
  --ink:#1f2328;
  --muted:#6b7280;
  --line:#ececec;
  --accent:#e8543f;   /* 小黑手绘的橙红强调 */
  --accent2:#2b6cb0;  /* 链接蓝 */
  --radius:14px;
  --maxw:760px;
}
*{box-sizing:border-box}
html{-webkit-text-size-adjust:100%}
body{
  margin:0;
  font-family:-apple-system,BlinkMacSystemFont,"PingFang SC","Microsoft YaHei","Hiragino Sans GB","Noto Sans CJK SC",sans-serif;
  color:var(--ink);
  background:var(--bg);
  line-height:1.75;
  font-size:17px;
}
a{color:var(--accent2);text-decoration:none}
a:hover{text-decoration:underline}

/* ---------- 首页 ---------- */
.hero{
  max-width:1080px;margin:0 auto;padding:56px 24px 28px;text-align:center;
}
.hero h1{font-size:32px;margin:0 0 12px;letter-spacing:.5px}
.hero .sub{color:var(--muted);font-size:17px;margin:0 auto;max-width:640px}
.hero .meta{margin-top:14px;color:var(--accent);font-weight:600;font-size:14px;letter-spacing:1px}
.cats{max-width:1080px;margin:0 auto;padding:8px 24px 64px}
.cat{margin-top:40px}
.cat h2{
  font-size:20px;margin:0 0 16px;padding-left:12px;
  border-left:5px solid var(--accent);
}
.grid{
  display:grid;gap:18px;
  grid-template-columns:repeat(auto-fill,minmax(240px,1fr));
}
.card{
  display:flex;flex-direction:column;background:var(--card);
  border:1px solid var(--line);border-radius:var(--radius);overflow:hidden;
  transition:transform .15s ease,box-shadow .15s ease;
}
.card:hover{transform:translateY(-3px);box-shadow:0 8px 24px rgba(0,0,0,.08);text-decoration:none}
.card .thumb{
  width:100%;aspect-ratio:4/3;object-fit:cover;background:#f3f3f0;
  border-bottom:1px solid var(--line);
}
.card-body{padding:14px 16px 18px}
.card-body h3{font-size:16px;margin:0 0 6px;line-height:1.4;color:var(--ink)}
.card-body p{font-size:13px;color:var(--muted);margin:0;word-break:break-all}
.foot{text-align:center;color:var(--muted);font-size:13px;padding:32px 16px 56px}

/* ---------- 单篇 ---------- */
.post{max-width:var(--maxw);margin:0 auto;padding:28px 22px 80px}
.crumbs{font-size:14px;color:var(--muted);margin-bottom:18px}
.crumbs a{color:var(--muted)}
.post-head h1{font-size:27px;line-height:1.35;margin:0 0 8px}
.content img{
  max-width:100%;height:auto;display:block;margin:26px auto;
  border-radius:10px;background:#fff;border:1px solid var(--line);
}
.content h2{
  font-size:21px;margin:38px 0 12px;padding-bottom:6px;
  border-bottom:2px dashed var(--line);
}
.content h3{font-size:18px;margin:26px 0 8px}
.content p{margin:14px 0}
.content ul,.content ol{padding-left:1.4em;margin:14px 0}
.content li{margin:6px 0}
.content blockquote{
  margin:18px 0;padding:12px 18px;background:#fff8f6;
  border-left:4px solid var(--accent);border-radius:0 8px 8px 0;color:#444;
}
.content code{
  background:#f3f3f0;padding:2px 6px;border-radius:5px;font-size:.9em;
  font-family:"SFMono-Regular",Consolas,"Liberation Mono",monospace;
}
.content pre{
  background:#1f2328;color:#f5f5f5;padding:16px 18px;border-radius:10px;
  overflow:auto;font-size:14px;line-height:1.6;
}
.content pre code{background:none;padding:0;color:inherit}
.content hr{border:none;border-top:1px solid var(--line);margin:30px 0}
.pager{
  display:flex;justify-content:space-between;gap:12px;
  margin-top:48px;padding-top:20px;border-top:1px solid var(--line);font-size:15px;
}
.pager .prev,.pager .next{max-width:48%}
.pager .next{text-align:right}
.pager a{color:var(--accent2)}
.back{text-align:center;margin-top:28px;color:var(--muted);font-size:14px}
@media (max-width:520px){
  body{font-size:16px}
  .hero h1{font-size:26px}
  .post-head h1{font-size:23px}
}