:root{
  --bg:#f4f3ef;--card:#fff;--ink:#1d1f1c;--muted:#7a7d75;--line:#e4e2db;--soft:#f0efea;
  --shadow:0 1px 2px rgba(30,30,20,.05),0 4px 16px rgba(30,30,20,.05)
}
@media (prefers-color-scheme:dark){
  :root{--bg:#151614;--card:#1f201d;--ink:#ecebe6;--muted:#9a9c94;--line:#33342f;--soft:#2a2b27;--shadow:none}
}
*{box-sizing:border-box}
body{margin:0;background:var(--bg);color:var(--ink);font-family:'Noto Sans JP',-apple-system,'Hiragino Sans',sans-serif;font-size:15px;line-height:1.6;-webkit-font-smoothing:antialiased}
a{color:inherit;text-decoration:none}
button,input{font:inherit;color:inherit}
button{cursor:pointer;border:0;background:none;padding:0}
h2,h3,p{margin:0}
svg{display:block}
.wrap{max-width:1040px;margin:0 auto;padding:0 16px}

.header{padding:20px 0 4px}
.header-row{display:flex;align-items:center;justify-content:space-between}
.brand{font-size:20px;font-weight:700;letter-spacing:.04em}
.updated{font-size:13px;color:var(--muted)}

.toolbar{display:flex;flex-wrap:wrap;align-items:center;gap:10px;margin:20px 0}
.segment{display:flex;background:var(--soft);border-radius:10px;padding:3px}
.segment button{padding:6px 16px;border-radius:8px;font-weight:500;color:var(--muted)}
.segment button.active{background:var(--card);color:var(--ink);box-shadow:var(--shadow)}
.search{margin-left:auto;display:flex;align-items:center;gap:6px;background:var(--card);border:1px solid var(--line);border-radius:999px;padding:6px 14px;min-width:180px}
.search svg{width:16px;height:16px;fill:none;stroke:var(--muted);stroke-width:2}
.search input{border:0;outline:0;background:none;width:100%}

.grid{display:grid;grid-template-columns:repeat(auto-fill,minmax(300px,1fr));gap:16px;padding-bottom:48px}
.card{position:relative;display:flex;flex-direction:column;gap:10px;background:var(--card);border-radius:14px;padding:18px 18px 14px;box-shadow:var(--shadow);transition:transform .15s}
.card:hover{transform:translateY(-2px)}
.tags{display:flex;flex-wrap:wrap;gap:6px}
.tag{align-self:flex-start;font-size:12px;padding:2px 8px;border-radius:6px;background:var(--soft);color:var(--muted);font-weight:500}
.card h3{font-size:17px;line-height:1.45;font-weight:700}
.card h3 a::after{content:"";position:absolute;inset:0;border-radius:14px}
.lede{color:var(--muted);font-size:14px;display:-webkit-box;-webkit-line-clamp:2;-webkit-box-orient:vertical;overflow:hidden}
.card-foot{display:flex;align-items:center;justify-content:space-between;margin-top:auto;padding-top:12px;border-top:1px solid var(--line);font-size:13px;color:var(--muted)}
.source{position:relative;z-index:1;display:inline-flex;align-items:center;gap:4px;padding:4px 8px;margin:-4px -8px;border-radius:6px}
.source:hover{background:var(--soft);color:var(--ink)}
.source svg{width:13px;height:13px;fill:none;stroke:currentColor;stroke-width:2}
.empty{grid-column:1/-1;padding:48px 0;text-align:center;color:var(--muted)}

dialog{border:0;border-radius:16px;padding:0;width:min(720px,calc(100% - 32px));max-height:calc(100% - 48px);overflow-y:auto;overscroll-behavior:contain;background:var(--card);color:var(--ink);box-shadow:0 20px 60px rgba(0,0,0,.2)}
dialog::backdrop{background:rgba(20,20,15,.4)}
#detail-body{position:relative;padding:28px 32px 32px;display:flex;flex-direction:column;gap:16px}
.close{position:sticky;align-self:flex-end;margin:-12px -16px -48px 0;z-index:2;top:12px;right:12px;width:32px;height:32px;border-radius:50%;background:var(--soft);font-size:16px;color:var(--muted)}
#detail-body h2{font-size:22px;line-height:1.45;padding-right:40px}
.article-meta{display:flex;align-items:center;gap:10px;font-size:13px;color:var(--muted)}
.article{font-size:16px;line-height:1.9}
.article p+p,.article ul+p,.article p+ul{margin-top:1em}
.article h3{font-size:17px;margin:1.6em 0 .4em}
.article ul{margin:0;padding-left:1.3em}
.article li+li{margin-top:.4em}
#detail-body .note{font-size:13px;color:var(--muted)}
.cta{display:flex;align-items:center;justify-content:center;gap:6px;padding:10px;border-radius:10px;background:var(--ink);color:var(--card);font-weight:500}
.cta svg{width:14px;height:14px;fill:none;stroke:currentColor;stroke-width:2}

@media (max-width:640px){
  .search{margin-left:0;width:100%}
  .grid{grid-template-columns:1fr;gap:12px}
  .card h3{font-size:16px}
  dialog{width:100%;max-width:none;max-height:none;height:100%;border-radius:0;margin:0}
  #detail-body{padding:20px 16px 32px}
  #detail-body h2{font-size:19px}
  .article{font-size:15px}
}
.close:focus:not(:focus-visible){outline:none}
.tag.topic{background:transparent;border:1px solid var(--line);color:var(--ink)}
.topics{display:flex;gap:8px;overflow-x:auto;margin:-6px 0 18px;padding-bottom:4px;scrollbar-width:none}
.topics::-webkit-scrollbar{display:none}
.topics button{flex:none;padding:5px 12px;border-radius:999px;border:1px solid var(--line);background:var(--card);color:var(--muted);font-size:13px;font-weight:500}
.topics button.active{background:var(--ink);border-color:var(--ink);color:var(--card)}
.topics button:focus-visible,.segment button:focus-visible{outline:2px solid var(--ink);outline-offset:2px}