:root{--ink: #232323;--muted: #6f6f6f;--line: #e2e2e2;--panel: #fbfbfb;--amazon: #ff9900;--accent: #337ab7;--accent-dark: #285f92;--ok: #2f7d4f;--warn: #b07a1f;--err: #c22}*{box-sizing:border-box}html,body,#root{height:100%}body{margin:0;font-family:Helvetica Neue,Arial,sans-serif;color:var(--ink);background:var(--panel)}.pv{min-height:100vh;display:flex;flex-direction:column}.pv-top{display:flex;align-items:center;justify-content:space-between;gap:20px;padding:14px 28px;border-bottom:1px solid var(--line);background:#fff}.brand{display:flex;align-items:center;gap:20px;min-width:0}.amazon{font-size:22px;font-weight:600;letter-spacing:-.02em}.amazon em{font-style:normal;font-weight:400;font-size:15px;color:var(--muted)}.brand .divider{width:1px;height:30px;background:var(--line)}.title-block{display:flex;flex-direction:column;min-width:0}.title-block strong{font-size:15px}.book-meta{font-size:12px;color:var(--muted);white-space:nowrap;overflow:hidden;text-overflow:ellipsis;max-width:40vw}.feedback{background:none;border:none;color:var(--accent);font-size:13px;cursor:pointer;text-decoration:underline}.pv-body{display:grid;grid-template-columns:320px 1fr;flex:1;min-height:0}.panel{border-right:1px solid var(--line);background:#fff;padding:20px;overflow-y:auto}.panel section{margin-bottom:22px}.side-label{font-size:12px;letter-spacing:.12em;text-transform:uppercase;color:var(--muted);margin:0 0 12px}.spec .field{display:block;margin-bottom:12px}.spec .label{display:block;font-size:11px;color:var(--muted);margin-bottom:5px}.spec select{width:100%;padding:8px 10px;border:1px solid var(--line);border-radius:6px;background:#fff}.check{display:flex;align-items:center;gap:8px;font-size:13px;margin-bottom:9px;cursor:pointer}.check input{accent-color:var(--amazon)}.file-card{display:flex;flex-direction:column;gap:3px;border:1px solid var(--line);border-radius:8px;padding:11px 13px;background:#fafafa}.file-card strong{font-size:13px;word-break:break-all}.file-card span{color:var(--muted);font-size:12px}.btn{border:1px solid var(--line);background:#fff;padding:8px 14px;border-radius:999px;font-size:13px;cursor:pointer;transition:.15s}.btn.ghost:hover{border-color:var(--ink)}.btn.ghost:disabled{opacity:.4;cursor:default}.btn.primary{background:var(--accent);color:#fff;border-color:var(--accent)}.btn.primary:hover{background:var(--accent-dark)}.btn.block{width:100%}.qc-nav{border-top:1px solid var(--line);padding-top:14px}.qc-label{font-size:12px;color:var(--muted)}.qc-nav-btns{display:flex;gap:8px;margin-top:10px}.qc h3{font-size:13px;margin:0 0 8px}.qc>p{font-size:12px;line-height:1.6;color:var(--muted);margin:0 0 12px}.qc-list{list-style:none;margin:0;padding:0;display:flex;flex-direction:column;gap:6px;max-height:300px;overflow-y:auto}.qc-list li{display:flex;gap:8px;align-items:baseline;font-size:12px;padding:7px 9px;border-left:3px solid var(--line);background:#fafafa;border-radius:0 6px 6px 0;cursor:pointer}.qc-list li.error{border-left-color:var(--err)}.qc-list li.warn{border-left-color:var(--warn)}.qc-list li.info{border-left-color:#c7c7c7}.qc-page{flex:0 0 auto;color:var(--accent);font-size:11px;min-width:34px}.qc-msg{color:var(--ink)}.qc-selected{margin-top:12px;border:1px solid var(--line);border-radius:8px;padding:10px 12px;background:#fafafa}.qc-selected p{font-size:12px;margin:8px 0 0;line-height:1.5}.pill{font-size:10px;letter-spacing:.06em;text-transform:uppercase;padding:3px 8px;border-radius:999px;background:#ccc;color:#fff}.pill.error{background:var(--err)}.pill.warn{background:var(--warn)}.pill.ok{background:var(--ok)}.stage{position:relative;display:flex;flex-direction:column;min-height:0;background:#ececec}.scorebar{position:absolute;top:14px;right:20px;z-index:5;display:flex;align-items:baseline;gap:6px;background:#fff;border:1px solid var(--line);border-radius:999px;padding:6px 14px;box-shadow:0 2px 8px #0000000f}.score-num{font-size:20px;font-weight:700;color:var(--accent)}.score-label,.score-hint{color:var(--muted);font-size:12px}.spread{flex:1;display:flex;align-items:center;justify-content:center;gap:28px;padding:46px;overflow:auto}.page-frame{position:relative;box-shadow:0 4px 24px #00000029;border:1px solid #d8d8d8;background:#fff}.page-canvas{display:block;width:100%;height:100%}.guide-trim{position:absolute;border:1px dashed #b3402a;pointer-events:none}.page-number{position:absolute;bottom:4px;right:6px;font-size:10px;color:#999}.thumbs{flex:1;display:grid;grid-template-columns:repeat(auto-fill,minmax(110px,1fr));gap:14px;padding:26px;align-content:start;overflow:auto}.thumb{border:2px solid transparent;background:#fff;padding:6px;cursor:pointer;border-radius:4px;display:flex;flex-direction:column;align-items:center;gap:4px}.thumb.active{border-color:var(--accent)}.thumb canvas{width:100%;aspect-ratio:5 / 8;object-fit:contain;background:#fff}.thumb span{font-size:11px;color:var(--muted)}.toolbar{display:flex;align-items:center;gap:10px;padding:12px 20px;border-top:1px solid var(--line);background:#fff;flex-wrap:wrap}.view-toggle{display:flex;gap:0}.tb{background:#fff;border:1px solid var(--line);padding:7px 12px;font-size:12px;cursor:pointer}.tb:first-child{border-radius:6px 0 0 6px}.tb:last-child{border-radius:0 6px 6px 0}.view-toggle .tb.on{background:var(--accent);color:#fff;border-color:var(--accent)}.tb:disabled{opacity:.4;cursor:default}.page-range{font-size:12px;color:var(--muted);min-width:70px;text-align:center}.guides-toggle{display:flex;align-items:center;gap:6px;font-size:12px}.guides-toggle input{accent-color:var(--accent)}.toolbar-spacer{flex:1}.drop-zone{flex:1;display:grid;place-items:center;padding:40px}.drop-card{text-align:center;max-width:480px;border:2px dashed var(--line);border-radius:16px;padding:48px 40px;background:#fff}.drop-icon{display:inline-grid;place-items:center;width:72px;height:72px;border-radius:50%;background:var(--amazon);color:#fff;font-weight:700;font-size:20px;margin-bottom:18px}.drop-card h2{margin:0 0 10px;font-size:24px}.drop-card p{color:var(--muted);line-height:1.7;margin:0 0 22px}.error{margin:16px 28px;padding:12px 16px;border:1px solid #f0c0b8;background:#fbeae5;color:var(--err);border-radius:8px}.issue-ring{position:absolute;top:0;right:0;bottom:0;left:0;border:3px solid var(--accent);box-shadow:0 0 0 2px #337ab766,inset 0 0 0 1px #337ab733;pointer-events:none;z-index:3}.issue-badge{position:absolute;top:10px;left:10px;z-index:4;min-width:22px;height:22px;padding:0 6px;border:none;border-radius:999px;color:#fff;font-size:12px;font-weight:700;cursor:pointer;display:grid;place-items:center;box-shadow:0 2px 6px #00000040}.issue-badge.err{background:var(--err)}.issue-badge.warn{background:var(--warn)}.issue-badge.info{background:#8a8a8a}.issue-badge:hover{transform:translateY(-1px)}.thumb{position:relative}.thumb-dot{position:absolute;top:8px;right:8px;width:10px;height:10px;border-radius:50%;border:2px solid #fff;box-shadow:0 1px 3px #0000004d}.thumb-dot.err{background:var(--err)}.thumb-dot.warn{background:var(--warn)}.thumb-dot.info{background:#8a8a8a}.qc-list li.active{background:#eef5fb;outline:1px solid var(--accent)}@media (max-width: 860px){.pv-body{grid-template-columns:1fr}.panel{border-right:none;border-bottom:1px solid var(--line);max-height:40vh}.spread{flex-direction:column}.page-frame{max-width:94vw}.brand .divider{display:none}.title-block .book-meta{max-width:60vw}}