:root {
  --bg:#f4f7fb;
  --panel:#ffffff;
  --ink:#182230;
  --muted:#64748b;
  --line:#dce4ee;
  --accent:#1769aa;
  --accent-2:#e9f4ff;
  --warning:#fff7df;
  --warning-border:#e9c76a;
  --shadow:0 10px 35px rgba(36,50,70,.08);
}
*{box-sizing:border-box}
body{margin:0;font-family:-apple-system,BlinkMacSystemFont,"Segoe UI","Yu Gothic UI","Yu Gothic",Meiryo,sans-serif;background:var(--bg);color:var(--ink)}
button,input{font:inherit}
button{cursor:pointer}
.app-shell{max-width:980px;margin:0 auto;padding:26px 18px 50px}
.hero{display:flex;justify-content:space-between;gap:20px;align-items:flex-start;margin-bottom:18px}
.eyebrow{font-size:.75rem;font-weight:800;letter-spacing:.12em;color:var(--accent)}
h1{font-size:2rem;margin:.2rem 0 .5rem}
.hero p{margin:0;color:var(--muted);line-height:1.7}
.count-pill{white-space:nowrap;background:var(--accent-2);color:var(--accent);font-weight:800;padding:10px 14px;border-radius:999px}
.notice{background:var(--warning);border:1px solid var(--warning-border);padding:13px 15px;border-radius:12px;line-height:1.65;margin-bottom:18px}
.search-card,.registered{background:var(--panel);border:1px solid var(--line);border-radius:16px;box-shadow:var(--shadow)}
.search-card{padding:18px}
.chat-row{display:flex;gap:12px;align-items:center}
.avatar{width:38px;height:38px;display:grid;place-items:center;border-radius:50%;background:#eef2f7;flex:0 0 auto}
.search-wrap{display:flex;gap:8px;flex:1}
.search-wrap input{width:100%;border:1px solid #b9c6d6;border-radius:11px;padding:13px 14px;outline:none;background:white}
.search-wrap input:focus{border-color:var(--accent);box-shadow:0 0 0 3px rgba(23,105,170,.12)}
.search-wrap button{border:0;background:var(--accent);color:white;font-weight:800;padding:0 20px;border-radius:11px}
.examples{margin:13px 0 0 50px;display:flex;gap:7px;flex-wrap:wrap;align-items:center;color:var(--muted);font-size:.88rem}
.example{border:1px solid var(--line);background:#fff;border-radius:999px;padding:6px 9px;color:#334155}
.conversation{margin-top:18px}
.query-bubble{max-width:75%;margin-left:auto;background:var(--accent);color:white;padding:11px 15px;border-radius:16px 16px 4px 16px;line-height:1.5;box-shadow:var(--shadow)}
.bot-summary{display:flex;gap:10px;align-items:flex-start;margin:14px 0}
.bot-bubble{background:white;border:1px solid var(--line);border-radius:4px 16px 16px 16px;padding:12px 15px;box-shadow:var(--shadow);line-height:1.55}
.results{display:grid;gap:13px}
.result-card{background:var(--panel);border:1px solid var(--line);border-radius:15px;padding:16px;box-shadow:var(--shadow)}
.result-head{display:flex;justify-content:space-between;gap:12px;align-items:flex-start}
.result-title{font-size:1.08rem;font-weight:850;margin:0}
.meta{color:var(--muted);font-size:.88rem;line-height:1.55;margin-top:5px}
.badge{background:#eef6ff;color:var(--accent);font-weight:800;font-size:.78rem;padding:5px 8px;border-radius:999px;white-space:nowrap}
.hit-pages{margin-top:12px;display:grid;gap:8px}
.hit{border-top:1px solid #edf1f5;padding-top:10px}
.hit-title{font-weight:800;font-size:.9rem;margin-bottom:5px}
.snippet{font-size:.9rem;line-height:1.7;color:#334155;white-space:pre-wrap;overflow-wrap:anywhere}
mark{background:#fff19c;padding:0 2px;border-radius:3px}
.actions{display:flex;gap:8px;flex-wrap:wrap;margin-top:13px}
.actions a,.actions button{display:inline-block;text-decoration:none;border:0;border-radius:9px;padding:8px 11px;font-size:.88rem;font-weight:800}
.open-pdf{background:var(--accent);color:white}
.open-page{background:#eef2f7;color:#243447}
.viewer-open{overflow:hidden}
.pdf-viewer{position:fixed;inset:0;background:var(--bg);z-index:1000;display:none;grid-template-rows:auto 1fr auto}
.pdf-viewer.is-open{display:grid}
.pdf-toolbar{display:flex;justify-content:space-between;align-items:center;gap:12px;padding:10px 14px;background:#fff;border-bottom:1px solid var(--line);box-shadow:0 4px 12px rgba(36,50,70,.06)}
.pdf-page-label{margin-left:6px;color:var(--muted);font-size:.9rem}
.pdf-toolbar-actions{display:flex;align-items:center;gap:8px}
.pdf-new-tab,.pdf-toolbar button{border:0;border-radius:9px;padding:9px 12px;font-size:.88rem;font-weight:800;text-decoration:none}
.pdf-new-tab{background:#eef2f7;color:#243447}
.pdf-toolbar button{background:var(--accent);color:white}
.pdf-frame{width:100%;height:100%;border:0;background:#e8edf3}
.pdf-fallback{padding:7px 12px;text-align:center;background:#fff;color:var(--muted);font-size:.78rem;border-top:1px solid var(--line)}
.registered{margin-top:22px;padding:0 16px 16px}
.registered summary{cursor:pointer;font-weight:850;padding:15px 0}
.registered-grid{display:grid;grid-template-columns:repeat(2,minmax(0,1fr));gap:10px}
.reg-item{border:1px solid var(--line);border-radius:11px;padding:11px}
.reg-title{font-weight:850}
.reg-meta{font-size:.82rem;color:var(--muted);margin-top:4px;line-height:1.5}
.empty{background:white;border:1px dashed #bdc8d6;padding:22px;border-radius:14px;color:var(--muted);text-align:center}
footer{text-align:center;color:#94a3b8;font-size:.8rem;margin-top:24px}
@media(max-width:650px){
  .app-shell{padding:18px 12px 35px}
  .hero{display:block}.count-pill{display:inline-block;margin-top:12px}
  h1{font-size:1.7rem}
  .search-card{padding:13px}.chat-row{align-items:flex-start}.avatar{display:none}
  .search-wrap{display:block}.search-wrap button{width:100%;padding:11px;margin-top:8px}
  .examples{margin-left:0}
  .query-bubble{max-width:88%}
  .registered-grid{grid-template-columns:1fr}
  .result-head{display:block}.badge{display:inline-block;margin-top:8px}
  .pdf-toolbar{align-items:flex-start}.pdf-toolbar-actions{gap:5px}.pdf-new-tab,.pdf-toolbar button{padding:8px 9px}
}

.hero-status{display:flex;flex-direction:column;align-items:flex-end;gap:7px}
.update-time{font-size:.75rem;color:var(--muted);white-space:nowrap}
.registered-filter-wrap{margin:0 0 12px}
.registered-filter-wrap input{width:100%;border:1px solid #b9c6d6;border-radius:10px;padding:10px 12px;outline:none;font-size:16px}
.registered-filter-wrap input:focus{border-color:var(--accent);box-shadow:0 0 0 3px rgba(23,105,170,.12)}
.data-error{background:#fff3f3;border:1px solid #e7a7a7;color:#7f1d1d;padding:14px;border-radius:12px;margin-top:18px;line-height:1.6}
.issue-note{margin:10px 0;padding:8px 10px;border-radius:9px;background:#fff7e6;border:1px solid #f0cd7b;color:#7a4b00;font-size:.84rem;line-height:1.5}
@media(max-width:650px){
  .hero-status{align-items:flex-start}.update-time{white-space:normal}
  .pdf-toolbar{gap:8px;align-items:flex-start}.pdf-toolbar-actions{gap:7px}.pdf-new-tab,#pdfClose{font-size:.85rem;padding:8px 9px}
  .pdf-frame{height:calc(100vh - 116px)}
}