:root{--bg: #f7f5f0;--card: #ffffff;--text: #2b2620;--muted: #8a8175;--primary: #7a5c3e;--primary-dark: #64492e;--accent: #c9a86a;--danger: #b5443b;--danger-bg: #fbeeea;--border: #e5ded2;--radius: 10px;--shadow: 0 2px 10px rgba(60, 45, 25, .08)}*{box-sizing:border-box}body{margin:0;background:var(--bg);color:var(--text);font-family:-apple-system,BlinkMacSystemFont,PingFang SC,Hiragino Sans GB,Microsoft YaHei,Noto Sans SC,sans-serif;-webkit-font-smoothing:antialiased}#root{min-height:100vh}a{color:var(--primary);text-decoration:none}a:hover{text-decoration:underline}.page{max-width:1080px;margin:0 auto;padding:24px 20px 64px}.page-header{display:flex;align-items:center;justify-content:space-between;gap:12px;margin-bottom:20px;flex-wrap:wrap}.page-header h2{margin:0;font-size:22px}.topbar{position:sticky;top:0;z-index:50;background:var(--card);border-bottom:1px solid var(--border)}.topbar-inner{max-width:1080px;margin:0 auto;padding:12px 20px;display:flex;align-items:center;gap:12px}.topbar .brand{font-size:18px;font-weight:700;color:var(--primary);cursor:pointer}.topbar .spacer{flex:1}.topbar .email{font-size:13px;color:var(--muted);max-width:220px;overflow:hidden;text-overflow:ellipsis;white-space:nowrap}.link-btn{background:none;border:none;color:var(--primary);cursor:pointer;font-size:14px;padding:4px 6px}.link-btn:hover{text-decoration:underline}.card{background:var(--card);border:1px solid var(--border);border-radius:var(--radius);box-shadow:var(--shadow);padding:20px}.grid{display:grid;grid-template-columns:repeat(auto-fill,minmax(260px,1fr));gap:16px}.lib-card{cursor:pointer;transition:transform .12s ease}.lib-card:hover{transform:translateY(-2px)}.lib-card h3{margin:0 0 8px;font-size:17px}.lib-card p{margin:0 0 12px;color:var(--muted);font-size:14px;min-height:20px}.card-actions{display:flex;gap:8px;justify-content:flex-end}.btn{display:inline-flex;align-items:center;justify-content:center;gap:6px;border:1px solid transparent;border-radius:8px;padding:9px 18px;font-size:15px;cursor:pointer;background:var(--primary);color:#fff;transition:background .15s ease}.btn:hover{background:var(--primary-dark)}.btn:disabled{opacity:.55;cursor:not-allowed}.btn-secondary{background:var(--card);color:var(--text);border-color:var(--border)}.btn-secondary:hover{background:#f3efe6}.btn-danger{background:var(--danger)}.btn-danger:hover{background:#96382f}.btn-sm{padding:6px 12px;font-size:13px;border-radius:6px}.btn-block{width:100%}.field{margin-bottom:14px}.field label{display:block;font-size:14px;margin-bottom:6px;color:var(--text)}.input,select.input,textarea.input{width:100%;padding:10px 12px;font-size:15px;border:1px solid var(--border);border-radius:8px;background:#fff;color:var(--text)}.input:focus{outline:2px solid var(--accent);border-color:var(--accent)}textarea.input{resize:vertical;min-height:80px}.form-row{display:grid;grid-template-columns:1fr 1fr;gap:12px}.hint{font-size:13px;color:var(--muted);margin-top:6px}.auth-wrap{min-height:100vh;display:flex;align-items:center;justify-content:center;padding:24px 16px}.auth-card{width:100%;max-width:400px}.auth-card h1{text-align:center;color:var(--primary);margin:0 0 6px;font-size:26px}.auth-card .sub{text-align:center;color:var(--muted);font-size:14px;margin-bottom:20px}.auth-switch{text-align:center;margin-top:16px;font-size:14px;color:var(--muted)}.step-indicator{display:flex;gap:8px;justify-content:center;margin-bottom:18px;font-size:13px;color:var(--muted)}.step-indicator .active{color:var(--primary);font-weight:700}.code-input{text-align:center;letter-spacing:8px;font-size:22px!important;font-weight:700}.alert{padding:10px 14px;border-radius:8px;font-size:14px;margin-bottom:14px}.alert-error{background:var(--danger-bg);color:var(--danger);border:1px solid #f0c9c4}.alert-success{background:#eef6ec;color:#3a7a34;border:1px solid #cbe5c8}.alert-info{background:#eef3fa;color:#3b5a85;border:1px solid #c9d8ec}.empty{text-align:center;color:var(--muted);padding:48px 16px;font-size:15px}.loading{text-align:center;padding:48px 16px;color:var(--muted)}.modal-mask{position:fixed;top:0;right:0;bottom:0;left:0;background:#281e1273;display:flex;align-items:center;justify-content:center;padding:16px;z-index:100}.modal{background:var(--card);border-radius:12px;padding:24px;width:100%;max-width:560px;max-height:90vh;overflow-y:auto;box-shadow:0 8px 32px #0003}.modal h3{margin:0 0 16px;font-size:18px}.modal-footer{display:flex;justify-content:flex-end;gap:10px;margin-top:18px}.toolbar{display:flex;gap:10px;flex-wrap:wrap;margin-bottom:16px}.toolbar .input{width:auto}.toolbar .grow{flex:1;min-width:180px}.book-table{width:100%;border-collapse:collapse;font-size:14px}.book-table th,.book-table td{padding:10px 12px;border-bottom:1px solid var(--border);text-align:left;vertical-align:middle}.book-table th{background:#faf8f3;color:var(--muted);font-weight:600;white-space:nowrap}.book-cover{width:44px;height:60px;object-fit:cover;border-radius:4px;border:1px solid var(--border);background:#f0ece3}.book-cover.large{width:88px;height:120px}.cover-placeholder{width:44px;height:60px;border-radius:4px;background:#f0ece3;color:var(--muted);display:inline-flex;align-items:center;justify-content:center;font-size:12px}.code-tag{display:inline-block;background:#f3efe6;border:1px solid var(--border);border-radius:6px;padding:2px 8px;font-size:12px;white-space:nowrap}.shelf-tag{white-space:nowrap;color:var(--muted);font-size:13px}.row-actions{display:flex;gap:6px;white-space:nowrap}.book-cards{display:none}.book-card{display:flex;gap:12px;padding:12px 0;border-bottom:1px solid var(--border)}.book-card .info{flex:1;min-width:0}.book-card .title{font-weight:700;font-size:15px;margin-bottom:4px}.book-card .meta{font-size:13px;color:var(--muted);line-height:1.7}.book-card .meta b{color:var(--text);font-weight:500}.scan-box{border:1px dashed var(--border);border-radius:var(--radius);padding:16px;margin-bottom:16px;background:#faf8f3}.scan-video{width:100%;max-height:280px;border-radius:8px;background:#000;object-fit:cover}.scan-status{font-size:13px;color:var(--muted);margin-top:8px}@media (max-width: 720px){.page{padding:16px 12px 56px}.book-table-wrap{display:none}.book-cards{display:block}.form-row{grid-template-columns:1fr}.topbar .email{display:none}.toolbar .input{flex:1;width:100%}.toolbar{flex-direction:column}.modal{padding:18px}}