.nb {
 --bg: #f1f5f9; --card-bg: #ffffff; --primary: #2563eb; --primary-hover: #1d4ed8; --primary-light: #eff6ff; --text: #0f172a; --text-secondary: #475569; --border: #e2e8f0; --danger: #dc2626; --success: #16a34a; --shadow-sm: 0 1px 3px rgba(0,0,0,0.06); --shadow: 0 10px 25px -5px rgba(0,0,0,0.10), 0 8px 10px -6px rgba(0,0,0,0.05); --radius-sm: 8px; --radius: 12px; --radius-lg: 16px; --transition: 0.2s cubic-bezier(0.4, 0, 0.2, 1); --font: system-ui, -apple-system, 'Segoe UI', Roboto, 'PingFang SC', 'Microsoft YaHei', sans-serif; 
}.nb * {
 margin:0; padding:0; box-sizing:border-box; 
}.nb {
 font-family:var(--font); background:var(--bg); color:var(--text); min-height:100vh; line-height:1.5; 
}@media (prefers-reduced-motion: reduce) {
.nb * {
 transition: none !important; animation: none !important; scroll-behavior: auto !important; 
} 
}.nb .header {
 background:var(--card-bg); border-bottom:1px solid var(--border); padding:0 24px; position:sticky; top:0; z-index:100; box-shadow:var(--shadow-sm); 
}.nb .header-inner {
 max-width: 1300px; margin: 0 auto; display: flex; align-items: center; justify-content: space-between; min-height: 60px; width: 100%; 
}.nb .logo {
 font-weight:700; font-size:1.3rem; color:var(--text); white-space:nowrap; flex-shrink:0; 
}.nb .tab-nav {
 display:flex; gap:4px; background:#f1f5f9; border-radius:28px; padding:4px; flex-wrap:nowrap; flex-shrink:0; 
}.nb .tab-btn {
 padding:8px 16px; border-radius:24px; border:none; cursor:pointer; font-size:0.85rem; font-weight:500; background:transparent; color:var(--text-secondary); transition:var(--transition); white-space:nowrap; font-family:var(--font); 
}.nb .tab-btn.active {
 background:#fff; color:var(--primary); box-shadow:0 1px 3px rgba(0,0,0,0.06); font-weight:600; 
}.nb .tab-btn:hover:not(.active) {
 color:var(--text); background:rgba(255,255,255,0.6); 
}.nb .main-container {
 max-width:1300px; margin:0 auto; padding:24px; 
}.nb .tab-panel {
 display:none; 
}.nb .tab-panel.active {
 display:block; 
}.nb .card {
 background:var(--card-bg); border-radius:var(--radius-lg); padding:24px; box-shadow:var(--shadow); margin-bottom:20px; border:1px solid var(--border); 
}.nb .card-title {
 font-size:1.1rem; font-weight:600; margin-bottom:18px; display:flex; align-items:center; gap:10px; color:var(--text); border-bottom:1px solid #eef2f6; padding-bottom:14px; 
}.nb .card-title .icon-dot {
 width:10px; height:10px; border-radius:50%; background:var(--primary); flex-shrink:0; 
}.nb .split-layout {
 display:flex; gap:20px; align-items:flex-start; flex-wrap:wrap; 
}.nb .split-left {
 flex:1 1 280px; min-width:200px; display:flex; flex-direction:column; gap:12px; 
}.nb .split-right {
 flex:1 1 340px; min-width:240px; display:flex; flex-direction:column; gap:12px; padding-top:0 !important; margin-top:0 !important; 
}.nb /* 扇形骑缝章：右侧（设置参数 + 单页切片）加宽，使切片预览更大更清晰 */ #tab-perf-stamp .split-left {
 flex:1 1 320px; min-width:260px; 
}.nb #tab-perf-stamp .split-right {
 flex:1.6 1 460px; min-width:340px; 
}.nb .upload-area {
 border:2px dashed #cbd5e1; border-radius:var(--radius); padding:20px 16px; text-align:center; cursor:pointer; transition:var(--transition); background:#fafbfc; position:relative; user-select:none; 
}.nb .upload-area.drag-over {
 border-color:var(--primary); background:var(--primary-light); 
}.nb .upload-area .primary-text {
 font-weight:500; color:var(--text); 
}.nb .upload-area .secondary-text {
 font-size:0.8rem; color:var(--text-secondary); margin-top:6px; 
}.nb .upload-area input[type="file"] {
 position:absolute; top:0; right:0; bottom:0; left:0; opacity:0; cursor:pointer; 
}.nb .file-list {
 border:1px solid var(--border); border-radius:var(--radius-sm); background:#fff; 
}.nb .file-item {
 display:flex; align-items:center; padding:12px 16px; border-bottom:1px solid #f1f5f9; cursor:grab; 
}.nb .file-item:last-child {
 border-bottom:none; 
}.nb .file-item.dragging {
 opacity:0.5; background:#f8fafc; 
}.nb .file-item.drag-over {
 background:#e6f0ff; 
}.nb .drag-handle {
 margin-right:12px; color:#94a3b8; font-size:18px; cursor:grab; 
}.nb .file-info {
 flex:1; display:flex; align-items:center; gap:10px; 
}.nb .file-name {
 font-weight:500; word-break:break-word; 
}.nb .file-pages,.nb .file-size {
 font-size:0.75rem; background:#f1f5f9; padding:2px 8px; border-radius:20px; 
}.nb .remove-file {
 background:none; border:none; color:#94a3b8; font-size:18px; cursor:pointer; padding:4px 8px; border-radius:6px; 
}.nb .remove-file:hover {
 background:#fee2e2; color:#dc2626; 
}.nb .empty-message {
 text-align:center; padding:28px; color:#94a3b8; 
}.nb .config-row {
 display:flex; flex-wrap:wrap; align-items:center; gap:12px; margin:12px 0 4px; 
}.nb .config-label {
 font-weight:500; color:var(--text-secondary); display:flex; align-items:center; gap:8px; 
}.nb .config-input {
 padding:10px 14px; border:1px solid #cbd5e1; border-radius:12px; font-size:0.9rem; font-family:var(--font); 
}.nb .config-hint {
 font-size:0.8rem; color:var(--text-secondary); 
}.nb .radio-group {
 display:flex; gap:16px; flex-wrap:wrap; align-items:center; 
}.nb .radio-group label {
 display:flex; align-items:center; gap:6px; cursor:pointer; 
}.nb .action-bar {
 display:flex; align-items:center; gap:12px; flex-wrap:wrap; 
}.nb .btn {
 display:inline-flex; align-items:center; gap:5px; padding:10px 20px; border-radius:40px; font-weight:500; font-size:0.85rem; border:none; cursor:pointer; transition:var(--transition); font-family:var(--font); background:#fff; border:1px solid #cbd5e1; color:var(--text); 
}.nb .btn-primary {
 background:var(--primary); border-color:var(--primary); color:#fff; box-shadow:0 4px 10px rgba(37,99,235,0.2); 
}.nb .btn-primary:hover:not(:disabled) {
 background:var(--primary-hover); 
}.nb .btn-danger {
 background:#fff; color:var(--danger); border:1px solid var(--danger); 
}.nb .btn-danger:hover:not(:disabled) {
 background:#fee2e2; 
}.nb .btn-sm {
 padding:6px 14px; font-size:0.8rem; 
}.nb .btn:disabled {
 opacity:0.5; cursor:not-allowed; 
}.nb .status {
 font-size:0.85rem; color:var(--text-secondary); 
}.nb .progress {
 width:100%; height:6px; background:#e2e8f0; border-radius:3px; margin-top:12px; overflow:hidden; display:none; 
}.nb .progress-bar {
 height:100%; background:var(--primary); width:0%; transition:width 0.3s; 
}.nb .preview-grid {
 display:grid; grid-template-columns:repeat(auto-fill, minmax(150px,1fr)); gap:12px; margin-top:16px; 
}.nb .preview-item {
 position:relative; border-radius:var(--radius-sm); overflow:hidden; background:#fff; border:2px solid var(--border); box-shadow:var(--shadow-sm); cursor:grab; aspect-ratio:0.72; display:flex; flex-direction:column; 
}.nb .preview-item:hover {
 border-color:#b0b8e0; 
}.nb .preview-item.dragging {
 opacity:0.45; border-style:dashed; border-color:var(--primary); 
}.nb .preview-item.selected {
 outline:3px solid #e74c3c; outline-offset:-3px; 
}.nb .preview-item.selected .page-thumb {
 opacity:0.45; 
}.nb .checkbox-wrap {
 position:absolute; top:6px; left:6px; z-index:5; background:rgba(255,255,255,0.85); border-radius:4px; padding:2px; 
}.nb .checkbox-wrap input {
 width:16px; height:16px; cursor:pointer; accent-color:var(--primary); 
}.nb .page-thumb {
 width:100%; flex:1; min-height:0; object-fit:contain; background:#fafafa; 
}.nb .page-info {
 padding:6px 8px; font-size:0.7rem; color:var(--text-secondary); text-align:center; background:#fafbfc; 
}.nb .action-btns {
 position:absolute; top:6px; right:6px; display:flex; gap:3px; opacity:0; transition:var(--transition); 
}.nb .preview-item:hover .action-btns {
 opacity:1; 
}.nb .btn-icon-download {
 width:28px; height:28px; border-radius:50%; background:rgba(255,255,255,0.95); border:1px solid var(--border); cursor:pointer; font-size:0.75rem; display:flex; align-items:center; justify-content:center; color:var(--primary); 
}.nb .btn-icon-download:hover {
 background:var(--primary); color:#fff; 
}.nb .footer-note {
 text-align:center; padding:20px; color:var(--text-secondary); font-size:0.85rem; 
}.nb .usage-note {
 font-size:0.8rem; color:var(--text-secondary); margin-top:4px; line-height:1.4; 
}.nb .scale-hint {
 font-size:0.8rem; color:var(--text-secondary); margin-left:8px; white-space:nowrap; 
}.nb .example-badge {
 background: #dbeafe; color: #1e40af; padding: 2px 10px; border-radius: 30px; font-size: 12px; font-weight: 500; margin-left: 10px; 
}.nb /* 对开页拆分专属样式 */ .intro-card {
 background: #e0f2fe; color: #0f172a; border-radius: 1.5rem; padding: 1.2rem 2rem; margin-bottom: 1.2rem; display: flex; flex-wrap: wrap; align-items: center; justify-content: space-between; gap: 1rem; box-shadow: 0 8px 24px rgba(0,0,0,0.15); 
}.nb .intro-card h3 {
 font-size: 1.2rem; font-weight: 700; 
}.nb .features {
 display: flex; flex-wrap: wrap; gap: 1.2rem; font-size: 0.85rem; 
}.nb .features span {
 display: flex; align-items: center; gap: 0.3rem; 
}.nb .features span::before {
 content: "✓"; color: #34d399; font-weight: bold; 
}.nb .split-book-container {
 display: flex; flex-wrap: wrap; gap: 20px; 
}.nb .control-panel {
 flex: 0 0 280px; background: #fafbfc; border: 1px solid var(--border); border-radius: var(--radius-lg); padding: 1.5rem 1.4rem; display: flex; flex-direction: column; gap: 1.2rem; 
}.nb .preview-panel {
 flex: 1 1 500px; min-width: 300px; display: flex; flex-direction: column; gap: 1rem; 
}.nb .scale-select {
 padding: 0.6rem 0.8rem; border: 1px solid #e2e8f0; border-radius: 0.8rem; font-size: 0.9rem; background: white; outline: none; font-family: var(--font); 
}.nb .range-row {
 display: flex; align-items: center; gap: 0.5rem; flex-wrap: wrap; 
}.nb .range-row input {
 flex: 1; padding: 0.55rem 0.7rem; border: 1px solid #e2e8f0; border-radius: 0.7rem; font-size: 0.85rem; outline: none; background: white; font-family: var(--font); 
}.nb /* 滑块不能有内边距/边框，否则拇指到最大值时视觉上滑不到最右端 */ .range-row input[type="range"] {
 padding: 0; border: none; background: transparent; 
}.nb .range-row input[type="number"]:disabled {
 background: #f1f5f9; color: #94a3b8; cursor: not-allowed; 
}.nb .check-label {
 display: flex; align-items: center; gap: 0.2rem; font-size: 0.8rem; white-space: nowrap; cursor: pointer; 
}.nb .page-navigator {
 display: flex; align-items: center; gap: 0.8rem; flex-wrap: wrap; 
}.nb .nav-btn {
 background: #f1f5f9; border: 1px solid #d1d5db; border-radius: 0.6rem; padding: 0.35rem 0.9rem; font-weight: 600; cursor: pointer; font-family: var(--font); 
}.nb .page-indicator {
 font-weight: 600; color: #0f172a; min-width: 60px; text-align: center; 
}.nb .mode-selector {
 display: flex; gap: 0.4rem; align-items: center; margin-left: auto; flex-wrap: wrap; 
}.nb .mode-btn {
 border: 1px solid #cbd5e1; background: white; padding: 0.35rem 0.8rem; border-radius: 2rem; font-size: 0.8rem; cursor: pointer; transition: 0.2s; white-space: nowrap; font-family: var(--font); 
}.nb .mode-btn.active {
 background: var(--primary); color: white; border-color: var(--primary); 
}.nb .apply-all-btn {
 background: none; border: 1px solid #94a3b8; padding: 0.35rem 0.8rem; border-radius: 2rem; font-size: 0.75rem; cursor: pointer; color: #475569; font-family: var(--font); 
}.nb .ratio-badge {
 background: #e0e7ff; color: #3730a3; padding: 0.2rem 0.8rem; border-radius: 1rem; font-weight: 600; font-size: 0.8rem; 
}.nb .canvas-container {
 position: relative; background: #f8fafc; border-radius: 1rem; display: flex; justify-content: center; align-items: center; overflow: auto; padding: 0.5rem; box-shadow: inset 0 2px 8px rgba(0,0,0,0.03); 
}.nb .floating-tooltip {
 position: fixed; pointer-events: none; background: rgba(15, 23, 42, 0.85); color: white; padding: 0.25rem 0.7rem; border-radius: 1rem; font-size: 0.75rem; font-weight: 600; white-space: nowrap; display: none; z-index: 999; 
}.nb .legend {
 display: flex; gap: 1.5rem; font-size: 0.75rem; color: #64748b; 
}.nb .legend span::before {
 content: "●"; margin-right: 0.2rem; color: #ef4444; 
}@media (max-width:768px) {
.nb .header-inner {
 flex-direction: column; align-items: flex-start; 
}.nb .tab-nav {
 max-width: 100%; justify-content: flex-start; 
}.nb .split-layout {
 flex-direction:column; 
}.nb .split-left,.nb .split-right {
 flex:1 1 auto; 
}.nb .config-row {
 flex-direction:column; align-items:flex-start; 
}.nb .split-book-container {
 flex-direction: column; 
}.nb .control-panel {
 flex: 1 1 auto; 
} 
}.nb /* 书签树样式 */ .bookmark-tree-item {
 margin: 2px 0; 
}.nb .bookmark-tree-label {
 display: flex; align-items: center; gap: 8px; padding: 6px 8px; border-radius: 8px; cursor: pointer; transition: background 0.15s; 
}.nb .bookmark-tree-label:hover {
 background: #f1f5f9; 
}.nb .bookmark-tree-label input[type="checkbox"] {
 width: 16px; height: 16px; cursor: pointer; accent-color: var(--primary); flex-shrink: 0; 
}.nb .bookmark-tree-title {
 font-size: 0.9rem; color: var(--text); flex: 1; 
}.nb .bookmark-tree-page {
 font-size: 0.75rem; background: #e2e8f0; padding: 2px 8px; border-radius: 20px; white-space: nowrap; color: var(--text-secondary); 
}.nb .bookmark-tree-children {
 margin-left: 24px; border-left: 2px solid #e2e8f0; padding-left: 8px; 
}.nb .bookmark-tree-toggle {
 width: 20px; height: 20px; display: inline-flex; align-items: center; justify-content: center; font-size: 0.7rem; color: #94a3b8; cursor: pointer; border-radius: 4px; flex-shrink: 0; transition: transform 0.2s; 
}.nb .bookmark-tree-toggle:hover {
 background: #e2e8f0; color: #475569; 
}.nb .bookmark-tree-toggle.collapsed {
 transform: rotate(-90deg); 
}.nb #tab-pagenum .split-left {
 gap: 6px; 
}.nb #tab-pagenum .config-row {
 margin: 4px 0 2px; 
}.nb #tab-pagenum .config-label {
 min-width: 70px; 
}.nb /* 水印模块样式 */ #tab-watermark .split-left {
 gap: 6px; 
}.nb #tab-watermark .config-row {
 margin: 4px 0 2px; 
}.nb #tab-watermark .config-label {
 min-width: 70px; 
}.nb .color-preset {
 display: inline-block; width: 24px; height: 24px; border-radius: 6px; cursor: pointer; border: 2px solid transparent; transition: border-color 0.15s; 
}.nb .color-preset:hover {
 border-color: #999; 
}.nb .color-preset.active {
 border-color: var(--primary); box-shadow: 0 0 0 2px rgba(37,99,235,0.2); 
}.nb /* 卡片网格 */ .card-grid {
 display: grid; grid-template-columns: repeat(auto-fill, minmax(120px, 1fr)); gap: 12px; 
}.nb .tool-card {
 background: var(--card-bg); border-radius: var(--radius-lg); padding: 6px 12px; text-align: center; cursor: pointer; border: 1px solid var(--border); box-shadow: var(--shadow-sm); transition: transform var(--transition), box-shadow var(--transition), border-color var(--transition); user-select: none; 
}.nb .tool-card:hover {
 transform: translateY(-3px); box-shadow: var(--shadow); border-color: var(--primary); 
}.nb .tool-icon {
 font-size: 30px; margin-bottom: 10px; 
}.nb .tool-name {
 font-weight: 600; font-size: 0.9rem; color: var(--text); margin-bottom: 4px; 
}.nb .tool-desc {
 font-size: 0.75rem; color: var(--text-secondary); 
}.nb /* 分类卡片颜色 */ .tool-card.page-ops-card,.nb .tool-card.convert-ops-card,.nb .tool-card.enhance-ops-card {
 border-top: 1px solid var(--border); 
}.nb .mark-tools {
 display:flex; flex-wrap:wrap; gap:6px; 
}.nb .mark-tool {
 padding:6px 10px; border:1px solid #e2e8f0; background:#fff; border-radius:8px; cursor:pointer; font-size:0.8rem; transition:.15s; 
}.nb .mark-tool:hover {
 border-color:#6366f1; 
}.nb .mark-tool.active {
 background:#6366f1; color:#fff; border-color:#6366f1; 
}.nb .mark-colors {
 display:flex; align-items:center; gap:8px; flex-wrap:wrap; 
}.nb .color-swatch {
 width:22px; height:22px; border-radius:50%; cursor:pointer; border:2px solid #fff; box-shadow:0 0 0 1px #cbd5e1; transition:.15s; 
}.nb .color-swatch:hover {
 transform:scale(1.1); 
}.nb .color-swatch.active {
 box-shadow:0 0 0 2px #6366f1; 
}.nb #mark-custom-color {
 width:34px; height:28px; border:1px solid #e2e8f0; border-radius:6px; padding:0; cursor:pointer; background:#fff; 
}.nb /* 批注功能说明 */ #tab-mark .mark-intro {
 background:#fff7ed; border:1px solid #fed7aa; border-radius:10px; padding:12px 14px; margin-bottom:10px; color:#7c2d12; line-height:1.55; font-size:0.82rem; 
}.nb #tab-mark .mark-intro-title {
 font-weight:700; font-size:0.92rem; margin-bottom:6px; color:#c2410c; 
}.nb #tab-mark .mark-intro-body p {
 margin:0 0 7px; 
}.nb #tab-mark .mark-intro-body p:last-child {
 margin-bottom:0; 
}.nb #tab-mark .mark-intro-list {
 margin:2px 0 8px; padding-left:18px; 
}.nb #tab-mark .mark-intro-list li {
 margin:2px 0; 
}.nb #tab-mark .mark-intro-warn {
 background:#fef2f2; border:1px solid #fecaca; border-radius:8px; padding:8px 10px; color:#b91c1c; margin-top:4px; 
}.nb /* 预览区：让页面填满预览框，并支持滚动缩放 */ #tab-mark .preview-toolbar {
 display:flex; align-items:center; gap:6px; flex-wrap:wrap; margin-bottom:6px; 
}.nb #tab-mark .mark-zoom-sep {
 width:1px; height:20px; background:#e2e8f0; margin:0 4px; 
}.nb #tab-mark .canvas-scroll {
 flex:1 1 auto; height:calc(100vh - 250px); min-height:360px; overflow:auto; display:flex; background:#f1f5f9; border-radius:10px; padding:12px; box-shadow:inset 0 1px 3px rgba(0,0,0,.06); 
}.nb #tab-mark #mark-canvas {
 margin:auto; display:block; box-shadow:0 2px 14px rgba(0,0,0,.18); background:#fff; border-radius:6px; 
}.nb #tab-mark #mark-canvas.tool-select {
 cursor:default; 
}.nb /* 文字便签编辑弹窗 */ #tab-mark .mark-text-editor {
 position:fixed; top:0; right:0; bottom:0; left:0; background:rgba(15,23,42,.45); display:none; align-items:center; justify-content:center; z-index:1200; 
}.nb #tab-mark .mark-text-editor-box {
 background:#fff; border-radius:12px; padding:18px; width:min(460px,92vw); box-shadow:0 12px 48px rgba(0,0,0,.35); 
}.nb #tab-mark .mark-text-editor-title {
 font-weight:600; font-size:0.95rem; margin-bottom:10px; color:#0f172a; 
}.nb #tab-mark textarea#mark-text-input {
 width:100%; height:130px; resize:vertical; padding:10px; border:1px solid #cbd5e1; border-radius:8px; font-size:14px; line-height:1.6; font-family:inherit; outline:none; 
}.nb #tab-mark textarea#mark-text-input:focus {
 border-color:#6366f1; 
}.nb #tab-mark .mark-text-editor-actions {
 display:flex; gap:10px; justify-content:flex-end; margin-top:12px; 
} 

.nb 
  :root {

    --bg: #faf6f1;
    --surface: #ffffff;
    --surface-soft: #fbf5f1;
    --ink: #4b4250;
    --ink-2: #7a7080;
    --ink-3: #a89eaa;
    --line: rgba(120, 100, 120, 0.13);
    --shadow: 0 10px 28px rgba(160, 130, 145, 0.12);
    --shadow-hover: 0 18px 42px rgba(160, 130, 145, 0.2);
    --pink: #ff9ec1;
    --lavender: #a58be8;
    --blue: #7fb2ff;
    --mint: #6fd6a8;
    --butter: #ffd166;
    --peach: #ffb08a;
    --grad-1: linear-gradient(135deg, #ff9ec1, #a58be8);
    --grad-2: linear-gradient(135deg, #7fb2ff, #6fd6a8);
    --grad-3: linear-gradient(135deg, #ffd166, #ff9ec1);
    --done: #6fd6a8;
    --done-bg: #e9faf0;
    --why-bg: #fff6e8;
    --ticker-bg: linear-gradient(90deg, #ffe6ee, #e9e0ff, #dceeff, #e4f7ec, #fff3d8);
    --ticker-fg: #6b5a70;
  
}.nb[data-theme="dark"] {

    --bg: #201d26;
    --surface: #2a2633;
    --surface-soft: #322d3d;
    --ink: #f0e9f2;
    --ink-2: #c3b8cc;
    --ink-3: #94889e;
    --line: rgba(255, 255, 255, 0.09);
    --shadow: 0 10px 28px rgba(0, 0, 0, 0.35);
    --shadow-hover: 0 18px 42px rgba(0, 0, 0, 0.45);
    --pink: #ff9ec1;
    --lavender: #b79aff;
    --blue: #8fbfff;
    --mint: #7fe0b4;
    --butter: #ffd166;
    --peach: #ffb08a;
    --done-bg: #1d3328;
    --why-bg: #33291a;
    --ticker-bg: linear-gradient(90deg, #4a3344, #3a3355, #2f3d55, #2f4a3d, #4a4430);
    --ticker-fg: #f0e9f2;
  
}.nb * {
 margin: 0; padding: 0; box-sizing: border-box; 
}
.nb {

    font-family: "PingFang SC", "Hiragino Sans GB", "Microsoft YaHei", "Noto Sans SC", system-ui, sans-serif;
    background: var(--bg);
    color: var(--ink);
    line-height: 1.72;
    -webkit-font-smoothing: antialiased;
    overflow-x: hidden;
    transition: background-color 0.3s ease, color 0.3s ease;
  
}.nb button {
 font-family: inherit; cursor: pointer; 
}.nb ::selection {
 background: rgba(255, 158, 193, 0.35); color: var(--ink); 
}.nb /* ---------- 柔和光晕背景 ---------- */
  .nb-bg-grid {

    position: fixed; inset: 0; z-index: -1; pointer-events: none; overflow: hidden;
    background:
      radial-gradient(720px 480px at 8% -6%, rgba(255, 158, 193, 0.2), transparent 65%),
      radial-gradient(640px 460px at 95% 10%, rgba(127, 178, 255, 0.2), transparent 62%),
      radial-gradient(720px 520px at 50% 118%, rgba(255, 209, 102, 0.18), transparent 65%),
      radial-gradient(520px 420px at 82% 55%, rgba(111, 214, 168, 0.13), transparent 60%),
      var(--bg);
  
}.nb[data-theme="dark"] .nb-bg-grid {

    background:
      radial-gradient(720px 480px at 8% -6%, rgba(255, 158, 193, 0.1), transparent 65%),
      radial-gradient(640px 460px at 95% 10%, rgba(127, 178, 255, 0.1), transparent 62%),
      radial-gradient(720px 520px at 50% 118%, rgba(255, 209, 102, 0.07), transparent 65%),
      radial-gradient(520px 420px at 82% 55%, rgba(111, 214, 168, 0.08), transparent 60%),
      var(--bg);
  
}.nb /* ---------- 封面区 ---------- */
  .nb-hero {
 padding: 60px clamp(18px, 5vw, 72px) 36px; text-align: center; position: relative; 
}.nb .nb-kicker {

    display: inline-flex; align-items: center; gap: 10px;
    font-family: ui-monospace, Menlo, Consolas, monospace; font-size: 11px; font-weight: 700;
    letter-spacing: 0.2em; text-transform: uppercase;
    background: var(--grad-1); color: #fff;
    border-radius: 999px; padding: 8px 20px; box-shadow: 0 8px 20px rgba(255, 158, 193, 0.35);
  
}.nb .nb-title {

    margin: 24px 0 0; font-size: clamp(38px, 6.8vw, 66px);
    font-weight: 800; line-height: 1.14; letter-spacing: -0.01em;
  
}.nb .nb-hl {

    display: inline-block; padding: 0 16px; border-radius: 20px;
    background: linear-gradient(135deg, #ffe3ec, #e9e0ff);
    box-shadow: inset 0 -6px 0 rgba(255, 158, 193, 0.35);
  
}.nb[data-theme="dark"] .nb-hl {
 background: linear-gradient(135deg, #4a3344, #3a3355); box-shadow: inset 0 -6px 0 rgba(255, 158, 193, 0.25); 
}.nb .nb-hero-tip {

    display: block; max-width: 640px; margin: clamp(40px, 5vw, 70px) auto 0;
    padding: 16px 22px; border-radius: 20px;
    background: var(--surface); color: var(--ink-2);
    border: 1px solid var(--line); box-shadow: var(--shadow);
    font-size: 14.5px; font-weight: 650; text-decoration: none; text-align: left; line-height: 1.7;
    transition: transform 0.22s ease, color 0.22s ease, box-shadow 0.22s ease;
  
}.nb .nb-hero-tip:hover {
 transform: translateY(-2px); color: var(--ink); box-shadow: var(--shadow-hover); 
}.nb .nb-hero-tip b {
 color: #8a6fd6; 
}.nb .nb-hero-tip .nb-tip-desc {
 display: block; margin-top: 8px; font-size: 13px; font-weight: 500; color: var(--ink-2); line-height: 1.7; 
}.nb .nb-hero-tip .nb-tip-desc b {
 color: var(--ink); background: rgba(255, 209, 102, 0.4); padding: 0 5px; border-radius: 7px; 
}.nb[data-theme="dark"] .nb-hero-tip b {
 color: #c7b4ff; 
}.nb .nb-stamps {
 display: flex; flex-wrap: wrap; justify-content: center; gap: 12px; margin-top: clamp(40px, 5vw, 70px); 
}.nb .nb-stamp {

    display: inline-block; padding: 7px 18px; border-radius: 999px;
    background: var(--surface); border: 1.5px dashed #d8c9d8; color: var(--ink-2);
    font-size: 13.5px; font-weight: 650; box-shadow: var(--shadow);
  
}.nb[data-theme="dark"] .nb-stamp {
 border-color: rgba(255, 255, 255, 0.25); 
}.nb .nb-stamp:nth-child(2) {
 background: var(--grad-3); color: #fff; border-style: solid; border-color: transparent; 
}.nb .nb-stamp:nth-child(3) {
 background: var(--grad-2); color: #fff; border-style: solid; border-color: transparent; 
}.nb /* ---------- 进度条 ---------- */
  .nb-progress {

    display: flex; align-items: center; justify-content: center; gap: 14px; flex-wrap: wrap;
    margin-top: 26px; max-width: 640px; margin-left: auto; margin-right: auto;
  
}.nb .nb-progress-label {

    font-weight: 750; font-size: 14px; color: var(--ink);
    background: var(--surface); border-radius: 999px; padding: 8px 18px; box-shadow: var(--shadow);
  
}.nb .nb-progress-track {

    flex: 1; min-width: 170px; height: 14px; border-radius: 999px;
    background: rgba(120, 100, 120, 0.1); overflow: hidden;
    box-shadow: inset 0 2px 6px rgba(80, 60, 80, 0.08);
  
}.nb[data-theme="dark"] .nb-progress-track {
 background: rgba(255, 255, 255, 0.08); 
}.nb .nb-progress-fill {

    height: 100%; width: 0%; border-radius: 999px;
    background: linear-gradient(90deg, #ff9ec1, #a58be8, #7fb2ff);
    transition: width 0.45s ease;
  
}.nb .nb-progress-pct {

    font-family: ui-monospace, Menlo, Consolas, monospace; font-size: 15px; font-weight: 750;
    color: var(--ink-2); background: var(--surface); border-radius: 999px; padding: 5px 14px; box-shadow: var(--shadow);
  
}.nb /* ---------- 跑马灯（保留） ---------- */
  .nb-ticker {

    overflow: hidden; border-radius: 999px;
    margin: 40px clamp(18px, 5vw, 72px) 0;
    background: var(--ticker-bg); box-shadow: var(--shadow);
  
}.nb .nb-ticker-inner {

    display: inline-block; white-space: nowrap; padding: 10px 0;
    font-family: ui-monospace, Menlo, Consolas, monospace; font-size: 12.5px; font-weight: 650;
    letter-spacing: 0.13em; color: var(--ticker-fg);
    animation: nbTicker 30s linear infinite;
  
}
  @keyframes nbTicker  {
    from { transform: translateX(0); }
    to   { transform: translateX(-50%); }
  }.nb /* ---------- 筛选条 ---------- */
  .nb-filter {

    position: sticky; top: 0; z-index: 50;
    display: flex; flex-wrap: wrap; justify-content: center; gap: 10px;
    padding: 16px clamp(16px, 4vw, 56px);
    background: color-mix(in srgb, var(--bg) 80%, transparent);
    backdrop-filter: blur(14px); -webkit-backdrop-filter: blur(14px);
    border-bottom: 1px solid var(--line);
  
}.nb .nb-chip {

    display: inline-flex; align-items: center; gap: 8px;
    padding: 9px 18px; font-size: 14px; font-weight: 600;
    background: var(--surface); color: var(--ink-2);
    border: 1px solid var(--line); border-radius: 999px;
    box-shadow: 0 4px 12px rgba(160, 130, 145, 0.08);
    transition: transform 0.2s ease, box-shadow 0.2s ease, color 0.2s ease, background 0.2s ease;
  
}.nb .nb-chip:hover {
 transform: translateY(-2px); box-shadow: var(--shadow); color: var(--ink); 
}.nb .nb-chip.nb-active {
 background: var(--grad-1); color: #fff; border-color: transparent; box-shadow: 0 8px 20px rgba(165, 139, 232, 0.35); 
}.nb .nb-chip .nb-count {

    font-family: ui-monospace, Menlo, Consolas, monospace; font-size: 12px; font-weight: 700;
    background: rgba(165, 139, 232, 0.14); color: #8a6fd6;
    border-radius: 999px; padding: 1px 8px;
  
}.nb .nb-chip.nb-active .nb-count {
 background: rgba(255, 255, 255, 0.28); color: #fff; 
}.nb .nb-dot {
 width: 10px; height: 10px; border-radius: 50%; display: inline-block; flex: none; 
}.nb /* ---------- 正文 ---------- */
  .nb-main {
 max-width: 1180px; margin: 0 auto; padding: 44px clamp(18px, 4vw, 56px) 88px; 
}.nb .nb-section {
 margin-bottom: 54px; 
}.nb .nb-cat-head {
 display: flex; align-items: center; gap: 14px; flex-wrap: wrap; 
}.nb .nb-cat-icon {

    width: 48px; height: 48px; display: grid; place-items: center;
    font-size: 24px; color: #fff; border-radius: 16px; flex: none;
    box-shadow: 0 8px 18px rgba(120, 100, 130, 0.22);
  
}.nb .nb-cat-head h2 {
 font-size: clamp(22px, 2.8vw, 28px); font-weight: 800; letter-spacing: -0.01em; 
}.nb .nb-cat-no {

    font-family: ui-monospace, Menlo, Consolas, monospace; font-size: 11px; font-weight: 700;
    letter-spacing: 0.16em; color: var(--ink-3);
  
}.nb .nb-cat-count {

    margin-left: auto; font-size: 13px; font-weight: 700; color: #fff;
    border-radius: 999px; padding: 5px 15px;
    box-shadow: 0 6px 14px rgba(120, 100, 130, 0.22);
  
}.nb .nb-cat-intro {

    margin: 16px 0 22px; padding: 13px 18px; max-width: 860px;
    font-size: 14px; line-height: 1.78; color: var(--ink-2);
    background: var(--surface-soft); border-radius: 16px; border-left: 4px solid;
    box-shadow: var(--shadow);
  
}.nb .nb-cat-intro b {
 color: var(--ink); background: rgba(255, 209, 102, 0.35); padding: 0 5px; border-radius: 7px; 
}.nb .nb-grid {
 display: grid; grid-template-columns: repeat(auto-fill, minmax(420px, 1fr)); gap: 18px; 
}.nb /* ---------- 卡片 ---------- */
  .nb-card {

    position: relative; display: flex; align-items: center; gap: 18px;
    padding: 20px 22px; background: var(--surface);
    border: 1px solid var(--line); border-radius: 22px;
    box-shadow: var(--shadow); cursor: pointer;
    transition: transform 0.25s ease, box-shadow 0.25s ease, background 0.25s ease, border-color 0.25s ease;
    opacity: 0; transform: translateY(20px);
  
}.nb .nb-card.nb-visible {
 opacity: 1; transform: translateY(0); 
}.nb .nb-card.nb-visible:hover {
 transform: translateY(-4px); box-shadow: var(--shadow-hover); 
}.nb .nb-card.nb-done {
 background: var(--done-bg); border-color: rgba(111, 214, 168, 0.5); 
}.nb .nb-card-emoji {

    width: 56px; height: 56px; flex: none; display: grid; place-items: center;
    font-size: 26px; color: #fff; border-radius: 18px;
    background: var(--grad-1); box-shadow: 0 8px 18px rgba(255, 158, 193, 0.3);
    transition: transform 0.25s ease;
  
}.nb .nb-card:hover .nb-card-emoji {
 transform: scale(1.06) rotate(-4deg); 
}.nb .nb-card.nb-done .nb-card-emoji {
 background: var(--grad-2); box-shadow: 0 8px 18px rgba(111, 214, 168, 0.3); 
}.nb .nb-card-body {
 flex: 1; min-width: 0; display: flex; flex-direction: column; 
}.nb .nb-card-tags {
 display: flex; flex-wrap: wrap; gap: 7px; margin-bottom: 8px; 
}.nb .nb-tag {

    font-size: 12px; font-weight: 650; padding: 3px 11px; border-radius: 999px;
    background: rgba(165, 139, 232, 0.1); color: #8a6fd6;
    border: 1px solid rgba(165, 139, 232, 0.18);
  
}.nb[data-theme="dark"] .nb-tag {
 color: #c7b4ff; background: rgba(183, 154, 255, 0.12); border-color: rgba(183, 154, 255, 0.22); 
}.nb .nb-tag-no {
 color: #fff; border: none; background: var(--grad-1); 
}.nb .nb-card-title {
 font-size: 16.5px; font-weight: 750; line-height: 1.42; 
}.nb .nb-card-desc {
 font-size: 13.5px; font-weight: 500; color: var(--ink-2); margin-top: 5px; line-height: 1.62; 
}.nb .nb-card-foot {
 display: flex; align-items: center; gap: 10px; flex: none; 
}.nb .nb-btn-detail {

    padding: 10px 18px; font-size: 13.5px; font-weight: 700; color: #fff;
    background: var(--grad-1); border: none; border-radius: 999px;
    box-shadow: 0 6px 14px rgba(255, 158, 193, 0.32);
    transition: transform 0.2s ease, box-shadow 0.2s ease;
  
}.nb .nb-btn-detail:hover {
 transform: translateY(-2px); box-shadow: 0 10px 20px rgba(255, 158, 193, 0.4); 
}.nb .nb-btn-check {

    padding: 9px 14px; font-size: 13px; font-weight: 650;
    background: var(--surface-soft); color: var(--ink-2);
    border: 1px solid var(--line); border-radius: 999px;
    transition: all 0.2s ease;
  
}.nb .nb-btn-check:hover {
 transform: translateY(-1px); color: var(--ink); 
}.nb .nb-btn-check.nb-checked {
 background: var(--done); color: #fff; border-color: transparent; box-shadow: 0 6px 14px rgba(111, 214, 168, 0.32); 
}.nb .nb-done-badge {

    position: absolute; top: 12px; right: 14px; z-index: 3;
    font-family: ui-monospace, Menlo, Consolas, monospace; font-size: 10.5px; font-weight: 700;
    letter-spacing: 0.12em; background: var(--done); color: #fff;
    border-radius: 999px; padding: 3px 10px; box-shadow: 0 4px 10px rgba(111, 214, 168, 0.4);
  
}.nb /* ---------- 分隔带 ---------- */
  .nb-divider {

    height: 2px; margin: 2px 0 54px; border: none;
    background: linear-gradient(90deg, transparent, rgba(165, 139, 232, 0.35), transparent);
  
}.nb .nb-empty {

    text-align: center; padding: 60px 20px; font-weight: 700; font-size: 18px; color: var(--ink-2);
    background: var(--surface); border: 1.5px dashed var(--line); border-radius: 22px;
  
}.nb .nb-empty .nb-big {
 font-size: 48px; display: block; margin-bottom: 12px; 
}.nb /* ---------- 详情弹窗 ---------- */
  .nb-modal-backdrop {

    position: fixed; inset: 0; z-index: 200;
    background: rgba(70, 55, 80, 0.45);
    backdrop-filter: blur(6px); -webkit-backdrop-filter: blur(6px);
    display: none; align-items: center; justify-content: center; padding: 20px;
  
}.nb .nb-modal-backdrop.nb-open {
 display: flex; 
}.nb .nb-modal {

    position: relative; width: min(720px, 100%); max-height: 86vh; overflow-y: auto;
    background: var(--surface); border-radius: 26px; padding: 30px 30px 26px;
    box-shadow: 0 30px 80px rgba(60, 40, 70, 0.28);
    transform: translateY(16px) scale(0.97); opacity: 0;
    transition: transform 0.3s cubic-bezier(0.22, 0.68, 0.35, 1.2), opacity 0.24s ease;
  
}.nb .nb-modal-backdrop.nb-open .nb-modal {
 transform: translateY(0) scale(1); opacity: 1; 
}.nb .nb-modal-close {

    position: absolute; top: 16px; right: 16px; z-index: 2;
    width: 38px; height: 38px; font-size: 15px;
    background: var(--surface-soft); color: var(--ink-2);
    border: none; border-radius: 12px; transition: all 0.2s ease;
  
}.nb .nb-modal-close:hover {
 transform: rotate(90deg); color: var(--ink); 
}.nb .nb-modal-head {
 display: flex; align-items: center; gap: 16px; padding-right: 44px; 
}.nb .nb-modal-emoji {

    width: 64px; height: 64px; flex: none; display: grid; place-items: center;
    font-size: 30px; color: #fff; border-radius: 20px;
    background: var(--grad-1); box-shadow: 0 10px 22px rgba(255, 158, 193, 0.32);
    transform: rotate(-3deg);
  
}.nb .nb-modal-head h3 {
 font-size: 21px; font-weight: 800; line-height: 1.32; 
}.nb .nb-modal-cat {

    display: inline-block; margin-top: 7px;
    font-family: ui-monospace, Menlo, Consolas, monospace; font-size: 11.5px; font-weight: 700;
    background: rgba(165, 139, 232, 0.12); color: #8a6fd6;
    border-radius: 999px; padding: 3px 12px;
  
}.nb[data-theme="dark"] .nb-modal-cat {
 color: #c7b4ff; background: rgba(183, 154, 255, 0.14); 
}.nb .nb-modal-desc {

    margin-top: 18px; font-size: 14.5px; font-weight: 600; line-height: 1.68;
    background: var(--surface-soft); border-radius: 16px; padding: 12px 16px;
  
}.nb .nb-modal-sec {
 margin-top: 20px; 
}.nb .nb-modal-sec h4 {

    display: inline-block; font-size: 12.5px; font-weight: 800; letter-spacing: 0.1em;
    color: #8a6fd6; background: rgba(165, 139, 232, 0.1);
    border-radius: 999px; padding: 5px 14px; margin-bottom: 10px;
  
}.nb[data-theme="dark"] .nb-modal-sec h4 {
 color: #c7b4ff; background: rgba(183, 154, 255, 0.12); 
}.nb .nb-modal-points {
 list-style: none; 
}.nb .nb-modal-points li {

    position: relative; padding-left: 26px; font-size: 14px; font-weight: 550;
    line-height: 1.7; margin-bottom: 9px;
  
}.nb .nb-modal-points li::before {
 content: "✦"; position: absolute; left: 2px; top: 1px; color: var(--pink); font-weight: 700; 
}.nb .nb-modal-points code,.nb .nb-modal-why code {

    font-family: ui-monospace, Menlo, Consolas, monospace; font-size: 12.5px; font-weight: 700;
    background: rgba(255, 209, 102, 0.35); border-radius: 6px; padding: 1px 6px; word-break: break-all;
  
}.nb .nb-modal-why p {

    font-size: 14px; font-weight: 550; line-height: 1.74;
    background: var(--why-bg); border-radius: 16px; border-left: 4px solid var(--peach);
    padding: 13px 16px; color: var(--ink-2);
  
}.nb .nb-modal-why b {
 color: var(--ink); background: rgba(255, 209, 102, 0.35); padding: 0 4px; border-radius: 6px; 
}.nb .nb-modal-actions {
 display: flex; flex-wrap: wrap; gap: 12px; margin-top: 24px; 
}.nb .nb-btn-primary {

    padding: 13px 26px; font-size: 14.5px; font-weight: 700; color: #fff;
    background: var(--grad-1); border: none; border-radius: 999px;
    box-shadow: 0 8px 18px rgba(255, 158, 193, 0.35);
    transition: transform 0.2s ease, box-shadow 0.2s ease;
  
}.nb .nb-btn-primary:hover {
 transform: translateY(-2px); box-shadow: 0 12px 24px rgba(255, 158, 193, 0.42); 
}.nb .nb-btn-primary.nb-checked {
 background: var(--grad-2); box-shadow: 0 8px 18px rgba(111, 214, 168, 0.35); 
}.nb .nb-btn-ghost {

    padding: 12px 22px; font-size: 14px; font-weight: 650;
    background: var(--surface); color: var(--ink-2);
    border: 1.5px solid var(--line); border-radius: 999px;
    transition: all 0.2s ease;
  
}.nb .nb-btn-ghost:hover {
 transform: translateY(-2px); color: var(--ink); box-shadow: var(--shadow); 
}.nb /* ---------- Skill 展示 ---------- */
  .nb-skill-panel {

    background: var(--surface); border-radius: 22px;
    box-shadow: var(--shadow); padding: 22px 24px; max-width: 980px;
  
}.nb .nb-skill-panel h3 {

    display: inline-block; font-size: 13px; font-weight: 800;
    background: var(--grad-2); color: #fff; border-radius: 999px; padding: 4px 14px;
    margin: 16px 0 10px;
  
}.nb .nb-skill-panel h3:first-child {
 margin-top: 0; 
}.nb .nb-skill-panel p,.nb .nb-skill-panel li {
 font-size: 14px; line-height: 1.8; color: var(--ink-2); 
}.nb .nb-skill-panel ol,.nb .nb-skill-panel ul {
 padding-left: 26px; margin: 4px 0; 
}.nb .nb-skill-panel code {

    font-family: ui-monospace, Menlo, Consolas, monospace; font-size: 12.5px; font-weight: 700;
    background: rgba(255, 209, 102, 0.35); border-radius: 6px; padding: 1px 6px; word-break: break-all;
  
}.nb .nb-skill-panel pre {

    background: var(--surface-soft); border-radius: 16px; padding: 14px 16px;
    font-family: ui-monospace, Menlo, Consolas, monospace; font-size: 12.5px; overflow-x: auto;
  
}.nb .nb-skill-raw-head {

    display: flex; align-items: center; justify-content: space-between; gap: 12px; flex-wrap: wrap;
    margin: 24px 0 12px;
  
}.nb .nb-skill-raw-head span {
 font-weight: 800; font-size: 15px; 
}.nb .nb-skill-raw {

    background: #26232e; color: #efe7f2; border-radius: 20px;
    box-shadow: var(--shadow); padding: 18px 20px; max-width: 980px;
    font-family: ui-monospace, Menlo, Consolas, monospace; font-size: 12px; line-height: 1.7;
    white-space: pre-wrap; word-break: break-word; overflow-x: auto;
  
}.nb[data-theme="dark"] .nb-skill-raw {
 background: #1b1822; 
}.nb /* ---------- 页脚 ---------- */
  .nb-footer {

    text-align: center; padding: 32px clamp(18px, 4vw, 56px) 46px;
    color: var(--ink-3); font-size: 13px; line-height: 1.8; border-top: 1px solid var(--line);
  
}.nb .nb-footer .nb-foot-title {

    font-family: ui-monospace, Menlo, Consolas, monospace; font-weight: 700;
    letter-spacing: 0.18em; color: #a58be8; font-size: 12.5px; margin-bottom: 4px;
  
}.nb .nb-footer .nb-foot-tip {
 opacity: 0.9; font-size: 12px; max-width: 680px; margin: 4px auto 0; 
}.nb .nb-footer a {
 color: #8a6fd6; font-weight: 700; 
}.nb[data-theme="dark"] .nb-footer a {
 color: #c7b4ff; 
}.nb /* ---------- Toast ---------- */
  #nbToast {

    position: fixed; left: 50%; bottom: 32px; transform: translate(-50%, 16px);
    padding: 12px 26px; font-size: 13.5px; font-weight: 700;
    background: var(--ink); color: var(--bg);
    border-radius: 999px; box-shadow: var(--shadow-hover);
    z-index: 300; opacity: 0; pointer-events: none;
    transition: all 0.28s ease;
  
}.nb #nbToast.nb-show {
 opacity: 1; transform: translate(-50%, 0); 
}@media (max-width: 760px) {
.nb .nb-grid {
 grid-template-columns: 1fr; 
}.nb .nb-card {
 flex-wrap: wrap; padding: 18px; 
}.nb .nb-card-foot {
 width: 100%; justify-content: flex-end; 
}.nb .nb-modal {
 padding: 24px 18px 22px; 
}.nb .nb-cat-count {
 margin-left: 0; 
}.nb .nb-ticker {
 margin-left: 14px; margin-right: 14px; 
}
  
}





.nb {
  --bg: #faf6f1; --card-bg: #ffffff; --surface-soft: #fbf5f1;
  --ink: #4b4250; --ink-2: #7a7080; --ink-3: #a89eaa;
  --primary: #a58be8; --primary-hover: #8f74dd; --primary-light: #f1ecff;
  --text: #4b4250; --text-secondary: #7a7080;
  --border: rgba(120, 100, 120, 0.16);
  --danger: #ff7b8a; --success: #6fd6a8;
  --shadow-sm: 0 4px 14px rgba(160, 130, 145, 0.10);
  --shadow: 0 10px 28px rgba(160, 130, 145, 0.12);
  --shadow-hover: 0 18px 42px rgba(160, 130, 145, 0.20);
  --radius-sm: 12px; --radius: 16px; --radius-lg: 22px;
  --transition: 0.2s cubic-bezier(0.4, 0, 0.2, 1);
  --font: "PingFang SC", "Hiragino Sans GB", "Microsoft YaHei", "Noto Sans SC", system-ui, sans-serif;
  --line: rgba(120, 100, 120, 0.13);
  --pink: #ff9ec1; --lavender: #a58be8; --blue: #7fb2ff;
  --mint: #6fd6a8; --butter: #ffd166; --peach: #ffb08a;
  --grad-1: linear-gradient(135deg, #ff9ec1, #a58be8);
  --grad-2: linear-gradient(135deg, #7fb2ff, #6fd6a8);
  --grad-3: linear-gradient(135deg, #ffd166, #ff9ec1);
  --done: #6fd6a8; --done-bg: #e9faf0; --why-bg: #fff6e8;
  --ticker-bg: linear-gradient(90deg, #ffe6ee, #e9e0ff, #dceeff, #e4f7ec, #fff3d8);
  --ticker-fg: #6b5a70;
  overflow-x: hidden;
}
.nb[data-theme="dark"] {
  --bg: #201d26; --card-bg: #2a2633; --surface-soft: #322d3d;
  --ink: #f0e9f2; --ink-2: #c3b8cc; --ink-3: #94889e;
  --primary: #b79aff; --primary-hover: #a78bf0; --primary-light: #3a3355;
  --text: #f0e9f2; --text-secondary: #c3b8cc;
  --border: rgba(255, 255, 255, 0.09);
  --line: rgba(255, 255, 255, 0.09);
  --done-bg: #1d3328; --why-bg: #33291a;
  --ticker-bg: linear-gradient(90deg, #4a3344, #3a3355, #2f3d55, #2f4a3d, #4a4430);
  --ticker-fg: #f0e9f2;
}

/* 标语胶囊：放在印章下方 */
.nb .nb-hero-capsule {
  display: flex; flex-wrap: wrap; align-items: center; justify-content: center;
  width: fit-content; max-width: min(720px, 94vw);
  margin: 16px auto 0; padding: 10px 26px; border-radius: 999px;
  background: linear-gradient(90deg, #ff9ec1, #a58be8, #7fb2ff);
  color: #fff; font-size: 14px; font-weight: 650; letter-spacing: 0.01em;
  text-align: center; line-height: 1.6;
  box-shadow: 0 8px 18px rgba(165, 139, 232, 0.3);
}
.nb[data-theme="dark"] .nb-hero-capsule { box-shadow: 0 8px 18px rgba(0, 0, 0, 0.35); }

/* 背景：仿 gw 方案 —— 固定全屏装饰层（z-index:-1）+ 内容背景透明，随主题切换 */
.nb { background: transparent; min-height: 100vh; }
.nb .nb-bg-grid {
  position: fixed; inset: 0; z-index: -1; overflow: hidden; pointer-events: none;
  background:
    radial-gradient(720px 480px at 8% -6%, rgba(255, 158, 193, 0.22), transparent 65%),
    radial-gradient(640px 460px at 95% 10%, rgba(127, 178, 255, 0.22), transparent 62%),
    radial-gradient(720px 520px at 50% 118%, rgba(255, 209, 102, 0.18), transparent 65%),
    radial-gradient(520px 420px at 82% 55%, rgba(111, 214, 168, 0.14), transparent 60%),
    #faf6f1;
}
.nb[data-theme="dark"] .nb-bg-grid,
[data-theme="dark"] .nb .nb-bg-grid {
  background:
    radial-gradient(720px 480px at 8% -6%, rgba(255, 158, 193, 0.10), transparent 65%),
    radial-gradient(640px 460px at 95% 10%, rgba(127, 178, 255, 0.10), transparent 62%),
    radial-gradient(720px 520px at 50% 118%, rgba(255, 209, 102, 0.07), transparent 65%),
    radial-gradient(520px 420px at 82% 55%, rgba(111, 214, 168, 0.08), transparent 60%),
    #201d26;
}
/* 柔光球（随主题变暗） */
.nb .nb-orb { position: absolute; border-radius: 50%; filter: blur(70px); opacity: 0.5; }
.nb .nb-o1 { width: 420px; height: 420px; top: 12%; left: -140px; background: rgba(255, 158, 193, 0.55); animation: nbFloat 26s ease-in-out infinite; }
.nb .nb-o2 { width: 360px; height: 360px; top: 52%; right: -120px; background: rgba(127, 178, 255, 0.5); animation: nbFloat 32s ease-in-out infinite; animation-delay: -9s; }
.nb .nb-o3 { width: 300px; height: 300px; bottom: -80px; left: 40%; background: rgba(255, 209, 102, 0.42); animation: nbFloat 28s ease-in-out infinite; animation-delay: -16s; }
.nb[data-theme="dark"] .nb-orb,
[data-theme="dark"] .nb .nb-orb { opacity: 0.25; }
.nb[data-theme="dark"] .nb-o1 { background: rgba(255, 158, 193, 0.4); }
.nb[data-theme="dark"] .nb-o2 { background: rgba(127, 178, 255, 0.35); }
.nb[data-theme="dark"] .nb-o3 { background: rgba(255, 209, 102, 0.3); }
@keyframes nbFloat {
  0%, 100% { transform: translateY(0); }
  50% { transform: translateY(-28px); }
}
/* 页脚提示强制居中（防止宿主站点样式干扰） */
.nb .nb-footer,
.nb .nb-footer p,
.nb .nb-footer div,
.nb .nb-footer span { text-align: center; }

/* 分类栏：不额外加背景（透明，无模糊、无边框） */
.nb .nb-filter {
  background: transparent;
  backdrop-filter: none;
  -webkit-backdrop-filter: none;
  border-bottom: none;
}

/* 工具卡：两列网格；图标 | 名字→标签→简介（左对齐） | 按钮 */
.nb .nb-grid { display: grid; grid-template-columns: repeat(auto-fill, minmax(380px, 1fr)); gap: 16px; }
.nb .nb-card { gap: 22px; padding: 20px 26px; border-radius: 18px; }
.nb .nb-card-title,
.nb .nb-card-desc,
.nb .nb-card-tags { text-align: left !important; }
.nb .nb-card-emoji { border-radius: 16px; }
.nb .nb-card-title { font-size: 17px; font-weight: 700; line-height: 1.4; padding-right: 40px; }
.nb .nb-btn-detail { padding: 10px 20px; border-radius: 12px; font-size: 14px; font-weight: 600; }

/* 工具：删除文件按钮 */
.nb .nb-del-file-btn:hover { border-color: #ff7b8a !important; color: #ff7b8a !important; background: #fff1f1 !important; }
.nb[data-theme="dark"] .nb-del-file-btn:hover { background: #3a2430 !important; }

/* 大图预览：关闭按钮层级提高，防止被顶部字幕条遮挡 */
.nb #global-preview-close { z-index: 30; }

/* 工具卡内部：抗宿主 h3/p 边距干扰，名字→标签→简介位置固定 */
.nb .nb-card-title { margin: 0 !important; }
.nb .nb-card-tags { margin: 6px 0 0 !important; }
.nb .nb-card-desc { margin: 4px 0 0 !important; }
.nb .nb-cat-intro { margin: 16px 0 22px !important; }
.nb .nb-foot-tip { margin: 4px auto 0 !important; }

/* 面板头部：保持一行（防宿主 h2 边距 / button 块级化造成的错位） */
.nb h2 { margin: 0 !important; }
.nb .nb-back-btn { display: inline-flex; align-items: center; gap: 6px; flex: none; }
.nb .nb-panel-title { flex: none; min-width: 0; }
.nb .nb-panel-title h2 { white-space: nowrap; }

/* 窄屏：卡片换行，「打开工具」按钮平铺占满整行 */
@media (max-width: 760px) {
  .nb .nb-card { flex-wrap: wrap; }
  .nb .nb-card-foot { width: 100%; justify-content: flex-end; }
  .nb .nb-btn-detail { width: 100%; justify-content: center; }
}

/* hero 内导航 */
.nb .nb-hero-nav { display: flex; justify-content: center; gap: 10px; flex-wrap: wrap; margin-top: clamp(34px, 5vw, 60px); }
.nb .nb-hero-nav .tab-btn { padding: 11px 24px; }
.nb .nb-hero-nav .tab-btn.active {
  background: var(--grad-1); color: #fff; border-color: transparent;
  box-shadow: 0 8px 18px rgba(255, 158, 193, 0.35);
}

/* 工具面板 */
.nb .nb-panel-head { display: flex; align-items: center; gap: 16px; flex-wrap: wrap; margin: 34px 0 22px; }
.nb .nb-back-btn {
  padding: 10px 20px; font-size: 13.5px; font-weight: 650;
  background: var(--surface); color: var(--ink-2);
  border: 1.5px solid var(--line); border-radius: 999px;
  transition: transform 0.2s ease, box-shadow 0.2s ease, color 0.2s ease;
}
.nb .nb-back-btn:hover { transform: translateY(-2px); color: var(--ink); box-shadow: var(--shadow); }
.nb .nb-back-btn.active { background: var(--grad-1); color: #fff; border-color: transparent; }
.nb .nb-panel-title { display: flex; align-items: center; gap: 12px; }
.nb .nb-panel-title h2 { font-size: clamp(20px, 2.6vw, 26px); font-weight: 800; letter-spacing: -0.01em; }
.nb .nb-panel-title .nb-card-emoji { width: 50px; height: 50px; font-size: 22px; border-radius: 16px; }
.nb .nb-panel-body { max-width: 1180px; margin: 0 auto; }

/* 工具组件调和成奶油风 */
.nb .card { border-radius: 22px; box-shadow: var(--shadow); }
.nb .btn { border-radius: 999px; }
.nb .btn-primary { background: var(--grad-1); border-color: transparent; box-shadow: 0 8px 18px rgba(255, 158, 193, 0.32); }
.nb .btn-primary:hover:not(:disabled) { background: var(--grad-1); filter: brightness(1.05); }
.nb .tab-btn.active { background: var(--grad-1); color: #fff; border-color: transparent; box-shadow: 0 6px 14px rgba(255, 158, 193, 0.32); }
.nb .tab-btn:hover:not(.active) { background: rgba(255, 158, 193, 0.10); color: var(--ink); }
.nb .header {
  background: color-mix(in srgb, var(--bg) 82%, transparent);
  backdrop-filter: blur(14px); -webkit-backdrop-filter: blur(14px);
  border-bottom: 1px solid var(--line); box-shadow: none;
}
.nb .progress-bar { background: linear-gradient(90deg, #ff9ec1, #a58be8, #7fb2ff); }
.nb .upload-area { border-color: rgba(120, 100, 120, 0.22); background: var(--surface-soft); border-radius: 18px; }
.nb .upload-area.drag-over { border-color: var(--primary); background: var(--primary-light); }
.nb .file-list { border-color: var(--line); border-radius: 16px; }
.nb .file-pages, .nb .file-size { background: rgba(120, 100, 120, 0.08); color: var(--ink-2); }
.nb .empty-message { color: var(--ink-3); }
.nb .config-input, .nb .scale-select { border-color: rgba(120, 100, 120, 0.25); border-radius: 12px; }
.nb .progress { background: rgba(120, 100, 120, 0.12); }
.nb .example-badge { background: rgba(255, 158, 193, 0.15); color: #c0507d; }
.nb .icon-dot { background: var(--lavender); }
.nb .footer-note { color: var(--ink-3); }

/* 处理中浮层（原版缺样式，补全） */
.nb .loading-overlay {
  position: fixed; inset: 0; z-index: 9000;
  background: rgba(70, 55, 80, 0.45); backdrop-filter: blur(6px);
}
.nb .loading-overlay > div { position: absolute; top: 50%; left: 50%; transform: translate(-50%, -50%); }
.nb .loading-spinner {
  width: 22px; height: 22px; flex: none;
  border: 3px solid rgba(120, 100, 120, 0.2); border-top-color: var(--lavender);
  border-radius: 50%; animation: nbSpin 0.7s linear infinite;
}
@keyframes nbSpin { to { transform: rotate(360deg); } }

/* 深色模式：工具组件 */
.nb[data-theme="dark"] .card,
.nb[data-theme="dark"] .file-list,
.nb[data-theme="dark"] .control-panel { background: var(--surface); }
.nb[data-theme="dark"] .btn { background: var(--surface-soft); color: var(--ink); border-color: rgba(255, 255, 255, 0.14); }
.nb[data-theme="dark"] .config-input,
.nb[data-theme="dark"] .scale-select,
.nb[data-theme="dark"] .range-row input { background: var(--surface-soft); color: var(--ink); border-color: rgba(255, 255, 255, 0.14); }
.nb[data-theme="dark"] .upload-area { background: var(--surface-soft); border-color: rgba(255, 255, 255, 0.22); }
.nb[data-theme="dark"] .card-title { border-bottom-color: rgba(255, 255, 255, 0.09); }
.nb[data-theme="dark"] .file-pages, .nb[data-theme="dark"] .file-size { background: rgba(255, 255, 255, 0.1); color: var(--ink-2); }
.nb[data-theme="dark"] .status,
.nb[data-theme="dark"] .usage-note,
.nb[data-theme="dark"] .config-label,
.nb[data-theme="dark"] .config-hint { color: var(--ink-2); }
.nb[data-theme="dark"] .page-thumb { background: #1b1822; }
.nb[data-theme="dark"] .preview-item { background: var(--surface); border-color: rgba(255, 255, 255, 0.12); }
.nb[data-theme="dark"] .bookmark-tree-label:hover { background: rgba(255, 255, 255, 0.06); }
.nb[data-theme="dark"] .bookmark-tree-page { background: rgba(255, 255, 255, 0.1); color: var(--ink-2); }