:root{
  --bg:#ffffff;
  --fg:#111;
  --muted:#666;
  --line:#e6e6e6;
  --soft:#f7f7f7;
  --link:#1a66cc;
  --container:1100px;
  --radius:10px;
}
*{box-sizing:border-box}
html,body{margin:0;padding:0;font-family:system-ui,-apple-system,Segoe UI,Roboto,Helvetica,Arial,"Noto Sans JP","Hiragino Kaku Gothic ProN","Yu Gothic",sans-serif;background:var(--bg);color:var(--fg)}
a{color:var(--link);text-decoration:none}
a:hover{text-decoration:underline}
.topbar{border-bottom:1px solid var(--line);background:#fff}
.topbar-inner{max-width:var(--container);margin:0 auto;padding:10px 14px;display:flex;align-items:center;gap:12px}
.brand{font-weight:800;letter-spacing:.02em}
.breadcrumb{font-size:12px;color:var(--muted)}
.breadcrumb span{margin:0 6px;color:#aaa}
.hero{border-bottom:1px solid var(--line);background:var(--soft)}
.hero-inner{max-width:var(--container);margin:0 auto;padding:18px 14px}
.hero-img{width:100%;border-radius:12px;border:1px solid var(--line);overflow:hidden;background:#fff}
.navrow{max-width:var(--container);margin:0 auto;padding:10px 14px;display:flex;gap:18px;align-items:center;flex-wrap:wrap}
.navitem{font-size:13px;color:#333;display:flex;gap:8px;align-items:center}
.navitem::before{content:"";width:8px;height:8px;border-radius:2px;background:#cfcfcf;display:inline-block}
.page{max-width:var(--container);margin:0 auto;padding:18px 14px 60px}
.grid{display:grid;grid-template-columns: 1fr 320px;gap:22px;align-items:start}
@media (max-width: 980px){.grid{grid-template-columns:1fr}}
.timeline{list-style:none;margin:0;padding:0}
.t-item{display:grid;grid-template-columns:72px 1fr;gap:16px;padding:18px 0;border-top:1px solid var(--line)}
.t-item:first-child{border-top:none}
.datebox{position:relative;text-align:center;color:#111}
.day{font-size:22px;font-weight:800;line-height:1}
.month{font-size:12px;color:var(--muted);margin-top:6px}
.vline{position:absolute;left:50%;top:52px;bottom:-18px;width:1px;background:var(--line);transform:translateX(-50%)}
.postcard{padding:0 0 4px}
.ptitle{font-size:20px;font-weight:800;line-height:1.35;margin:0 0 10px}
.pmeta{font-size:12px;color:var(--muted);display:flex;gap:10px;align-items:center;flex-wrap:wrap}
.excerpt{margin:10px 0 0;color:#333;line-height:1.75;font-size:14px;white-space:pre-wrap}
.thumb{width:82px;height:62px;border:1px solid var(--line);border-radius:8px;background:#fafafa;display:flex;align-items:center;justify-content:center;color:#bbb;font-size:12px}
.row{display:flex;gap:14px;align-items:flex-start}
.tags{display:flex;gap:8px;flex-wrap:wrap;margin-top:10px}
.tag{display:inline-block;border:1px solid var(--line);border-radius:999px;padding:2px 10px;font-size:12px;color:var(--muted);background:#fff}
.side .box{border:1px solid var(--line);border-radius:12px;background:#fff;padding:14px;margin-bottom:14px}
.side h3{margin:0 0 10px;font-size:13px;color:#333}
.search{display:flex;gap:8px}
.search input{flex:1;border:1px solid var(--line);border-radius:10px;padding:10px 12px;font-size:14px}
.search button{border:1px solid var(--line);border-radius:10px;background:#fff;padding:10px 12px;cursor:pointer}
.search button:hover{background:#f6f6f6}
.profile{display:flex;gap:12px;align-items:center}
.avatar{width:56px;height:56px;border-radius:50%;border:1px solid var(--line);background:linear-gradient(135deg,#f2f2f2,#e6e6e6)}
.pname{font-weight:800}
.pdesc{font-size:12px;color:var(--muted);line-height:1.55;margin-top:6px}
.archive a{display:block;padding:6px 0;border-top:1px solid var(--line);font-size:13px;color:#333}
.archive a:first-child{border-top:none}
.article-card{border:1px solid var(--line);border-radius:12px;background:#fff;padding:18px}
.article{line-height:1.9;font-size:15px;white-space:pre-wrap}
.notice{font-size:12px;color:var(--muted);margin-top:10px}
.footer{border-top:1px solid var(--line);padding:18px 14px;color:var(--muted);font-size:12px}
.footer-inner{max-width:var(--container);margin:0 auto;display:flex;justify-content:space-between;align-items:center}
.hidden-link{opacity:0.05}
.hidden-link:hover{opacity:0.2}

.breadcrumb a{color:var(--muted)}
.breadcrumb a:hover{color:#333;text-decoration:none}