:root{--bg:#f4f5f7;--fg:#1f2329;--muted:#6b7280;--border:#e3e6ea;--primary:#2f6fed;--primary-dark:#2257c4;--danger:#c0392b;--card:#fff;--hover:#f0f6ff;--input-bg:#fff;--th-bg:#fafbfc;--radius:10px}:root[data-theme=dark]{--bg:#15171c;--fg:#e6e8ec;--muted:#99a1ad;--border:#2d323b;--primary:#5a8ff0;--primary-dark:#3f6fd0;--danger:#e0604f;--card:#1e2127;--hover:#262c36;--input-bg:#14161a;--th-bg:#23272e}*{box-sizing:border-box}body{background:var(--bg);color:var(--fg);margin:0;font-family:Noto Sans TC,system-ui,-apple-system,Segoe UI,sans-serif;font-size:15px}.nav-progress{z-index:1000;background:0 0;height:3px;position:fixed;top:0;left:0;right:0;overflow:hidden}.nav-progress-bar{background:var(--primary);border-radius:0 3px 3px 0;width:40%;height:100%;animation:.9s ease-in-out infinite nav-progress-slide;position:absolute;top:0}@keyframes nav-progress-slide{0%{width:40%;left:-40%}50%{width:55%}to{width:40%;left:100%}}.topbar{background:var(--card);border-bottom:1px solid var(--border);justify-content:space-between;align-items:center;height:56px;padding:0 24px;display:flex}.brand{letter-spacing:.3px;font-weight:700}.tabs{gap:4px;margin-left:24px;margin-right:auto;display:flex}.tabs a{color:var(--fg);border-radius:6px;padding:6px 14px;text-decoration:none}.tabs a:hover{background:var(--hover)}.tabs a.active{background:var(--primary);color:#fff;font-weight:600}.nav{align-items:center;gap:14px;display:flex}.theme-toggle{padding:4px 6px;font-size:1.05rem;line-height:1}.who{color:var(--muted)}.nav form{margin:0}.container{max-width:1080px;margin:24px auto;padding:0 24px}h1{margin:0 0 16px;font-size:1.4rem}a{color:var(--primary)}.card{background:var(--card);border:1px solid var(--border);border-radius:var(--radius);padding:16px}input,select,textarea,button{font:inherit;border:1px solid var(--border);background:var(--input-bg);color:var(--fg);border-radius:8px;padding:9px 12px}input:focus,select:focus,textarea:focus{outline:2px solid var(--primary);border-color:var(--primary)}button{cursor:pointer;background:var(--primary);color:#fff;border-color:var(--primary)}button:hover{background:var(--primary-dark)}button:disabled{opacity:.5;cursor:not-allowed}.link{color:var(--primary);cursor:pointer;background:0 0;border:none;padding:4px 6px;text-decoration:none}.link:hover{text-decoration:underline}.error{color:var(--danger);margin:8px 0}.muted{color:var(--muted)}.btn-primary,.btn-secondary,.btn-danger{font:inherit;cursor:pointer;white-space:nowrap;border:1px solid #0000;border-radius:8px;padding:9px 14px;line-height:1.2;text-decoration:none;display:inline-block}.btn-primary{background:var(--primary);color:#fff;border-color:var(--primary)}.btn-primary:hover{background:var(--primary-dark)}.btn-secondary{background:var(--card);color:var(--fg);border-color:var(--border)}.btn-secondary:hover{background:var(--hover)}.btn-danger{background:var(--danger);color:#fff;border-color:var(--danger)}.btn-danger:hover{filter:brightness(.93)}.page-head{justify-content:space-between;align-items:center;gap:12px;margin-bottom:16px;display:flex}.page-head h1{margin:0}.book-form{margin-top:8px}.form-grid{grid-template-columns:repeat(2,1fr);gap:14px;display:grid}.form-grid label{flex-direction:column;gap:4px;font-size:.9rem;display:flex}.form-grid label.full{grid-column:1/-1}.form-grid .req{color:var(--danger);margin-left:2px}.form-actions{gap:10px;margin-top:18px;display:flex}@media (width<=640px){.form-grid{grid-template-columns:1fr}}.detail-actions{align-items:center;gap:10px;margin-bottom:12px;display:flex}.detail-actions .spacer{flex:1}.modal-backdrop{z-index:1100;background:#00000073;justify-content:center;align-items:center;padding:24px;display:flex;position:fixed;inset:0}.modal{width:460px;max-width:100%}.modal h2{margin:0 0 8px;font-size:1.15rem}.modal-actions{justify-content:flex-end;gap:10px;margin-top:18px;display:flex}.modal-actions form{margin:0}.login-wrap{justify-content:center;margin-top:8vh;display:flex}.login-card{flex-direction:column;gap:12px;width:320px;display:flex}.login-card h1{margin:0}.login-card .subtitle{color:var(--muted);margin:-6px 0 6px}.login-card label{flex-direction:column;gap:4px;font-size:.9rem;display:flex}.filters{flex-wrap:nowrap;align-items:center;gap:10px;margin-bottom:16px;display:flex}.filters .grow{flex:auto;min-width:0}.filters select{flex:none}.filters button{white-space:nowrap;flex:none}.result-bar{color:var(--muted);justify-content:space-between;align-items:center;margin-bottom:8px;display:flex}.pager{align-items:center;gap:10px;display:flex}.table-wrap{padding:0;overflow-x:auto}table{border-collapse:collapse;width:100%}th,td{text-align:left;border-bottom:1px solid var(--border);white-space:nowrap;padding:10px 12px}th{background:var(--th-bg);font-weight:600}tbody tr:hover{background:var(--hover)}.detail{grid-template-columns:max-content 1fr;gap:6px 16px;margin:12px 0 0;display:grid}.detail dt{color:var(--muted)}.detail dd{word-break:break-word;margin:0}.back{margin-bottom:12px;display:inline-block}