:root{--bg:#f4f5f7;--fg:#1f2937;--muted:#6b7280;--line:#d1d5db;--accent:#2563eb;--card:#fff;--hl:rgba(250,204,21,.35)}@media(prefers-color-scheme:dark){:root{--bg:#111827;--fg:#e5e7eb;--muted:#9ca3af;--line:#374151;--card:#1f2937;--accent:#60a5fa}}*{box-sizing:border-box}body{margin:0;background:var(--bg);color:var(--fg);font:15px/1.4 system-ui,-apple-system,Segoe UI,sans-serif}.page{max-width:1600px;margin:0 auto;padding:0 12px 24px}.muted{color:var(--muted)}.center{text-align:center;padding:48px 0}.notice{margin:48px auto;max-width:480px;padding:20px;background:var(--card);border:1px solid var(--line);border-radius:8px;text-align:center}.strip{padding:10px 0;font-weight:600;overflow-wrap:anywhere}.btn{display:inline-block;padding:6px 12px;border:1px solid var(--line);border-radius:6px;background:var(--card);color:var(--fg);font:inherit;text-decoration:none;cursor:pointer;white-space:nowrap}.btn:disabled{opacity:.4;cursor:default}select{font:inherit;padding:6px;max-width:100%;border:1px solid var(--line);border-radius:6px;background:var(--card);color:var(--fg)}.tabs{display:flex;gap:4px;align-items:center;overflow-x:auto;border-bottom:1px solid var(--line);padding-bottom:6px;margin-bottom:10px}.tabs [role=tab]{padding:8px 14px;border:0;border-radius:6px;background:transparent;color:var(--fg);font:inherit;cursor:pointer;white-space:nowrap}.tabs [role=tab].on{background:var(--accent);color:#fff}.badge{display:inline-block;min-width:18px;padding:0 5px;border-radius:9px;background:#8080804d;font-size:12px;text-align:center}.spacer{flex:1}.posnav{display:flex;flex-wrap:wrap;gap:8px;align-items:center;margin-bottom:10px}.posnav-title{flex:1;min-width:180px;text-align:center;font-weight:600}.posnav select{width:200px}.sheet-box{min-width:0;flex:1}.sheet-tools{margin-bottom:6px;font-size:13px}.sheet-scroll{overflow:auto;background:var(--card);border:1px solid var(--line);border-radius:6px}.sheet{position:relative;background:#fff;color:#111}.sheet table{border-collapse:collapse;table-layout:fixed}.sheet td{padding:1px 3px;overflow:hidden;font-size:12px;vertical-align:bottom;border:1px solid transparent}.sheet tr.hl td{box-shadow:inset 0 0 0 9999px var(--hl)}.sheet tr.title{cursor:pointer}.sheet-img{position:absolute;object-fit:contain;pointer-events:none}.full{display:flex;gap:12px;align-items:flex-start}.side{position:sticky;top:8px;width:240px;flex:none;max-height:calc(100vh - 16px);overflow:auto;background:var(--card);border:1px solid var(--line);border-radius:6px;padding:6px}.side select{display:none;width:100%}.side ul{list-style:none;margin:0;padding:0}.side a{display:block;padding:4px 6px;border-radius:4px;color:var(--fg);text-decoration:none;font-size:13px}.side a.on{background:var(--accent);color:#fff}.thumbs{display:grid;grid-template-columns:repeat(auto-fill,minmax(150px,1fr));gap:8px;margin-bottom:12px}.thumb{padding:0;border:1px solid var(--line);border-radius:6px;background:var(--card);aspect-ratio:4/3;overflow:hidden;cursor:zoom-in}.thumb img{width:100%;height:100%;object-fit:cover;display:block}.gfile{margin-bottom:16px}.gfile-head{display:flex;flex-wrap:wrap;gap:10px;align-items:center;margin-bottom:6px}.pdf{width:100%;height:80vh;border:1px solid var(--line);border-radius:6px;background:#fff}.lightbox{position:fixed;inset:0;z-index:10;display:flex;align-items:center;justify-content:center;background:#000000e6}.lightbox img{max-width:100vw;max-height:90vh;object-fit:contain}.lb-btn{position:absolute;width:48px;height:48px;border:0;border-radius:24px;background:#fff3;color:#fff;font-size:20px;cursor:pointer}.lb-close{top:12px;right:12px}.lb-prev{left:12px}.lb-next{right:12px}.lb-cap{position:absolute;bottom:12px;left:0;right:0;text-align:center;color:#ddd;font-size:13px}@media(max-width:767px){.full{flex-direction:column;align-items:stretch}.side{position:static;width:auto;max-height:none;padding:0;border:0;background:none}.side ul{display:none}.side select{display:block}.posnav select{width:100%;order:5}}