/* 白色极简风格 (White Minimalist) 
   以空气感为先，通过大量留白和清晰字号、字重构建信息层级，
   绝对克制、温和对比、无杂乱装饰，兼具手机端极致舒适的排版与触控体验。
*/
:root {
    --bg: #fafafa;
    --surface: #ffffff;
    --text: #111827;
    --text-muted: #6b7280;
    --text-light: #9ca3af;
    --border: #e5e7eb;
    --border-strong: #d1d5db;
    --primary: #111827;
    --primary-fg: #ffffff;
    --success: #15803d;
    --success-bg: #f0fdf4;
    --danger: #b91c1c;
    --danger-bg: #fef2f2;
    --warn: #b45309;
    --warn-bg: #fffbeb;
    --info: #1d4ed8;
    --info-bg: #eff6ff;
    --radius: 8px;
    --shadow-sm: 0 1px 3px rgba(0, 0, 0, 0.03);
    --shadow-md: 0 4px 12px rgba(0, 0, 0, 0.04);
}

/* 优雅深色模式主题适配：基于柔和深灰蓝基底，保证高对比度与信息层级 */
[data-theme="dark"] {
    --bg: #0f1115;
    --surface: #181b21;
    --text: #f3f4f6;
    --text-muted: #9ca3af;
    --text-light: #6b7280;
    --border: #282d37;
    --border-strong: #3b4250;
    --primary: #f9fafb;
    --primary-fg: #111827;
    --success: #4ade80;
    --success-bg: rgba(74, 222, 128, 0.12);
    --danger: #f87171;
    --danger-bg: rgba(248, 113, 113, 0.12);
    --warn: #fbbf24;
    --warn-bg: rgba(251, 191, 36, 0.12);
    --info: #60a5fa;
    --info-bg: rgba(96, 165, 250, 0.12);
    --shadow-sm: 0 1px 3px rgba(0, 0, 0, 0.4);
    --shadow-md: 0 4px 14px rgba(0, 0, 0, 0.5);
}

[data-theme="dark"] .data-table th {
    background: #1e222a;
    color: #9ca3af;
}

[data-theme="dark"] .master-qr-box,
[data-theme="dark"] .master-qr-container,
[data-theme="dark"] .existing-thumb,
[data-theme="dark"] .qr-row-thumb {
    background: #ffffff; /* 确保二维码白底可被精准扫出 */
}

[data-theme="dark"] input[type="text"],
[data-theme="dark"] input[type="number"],
[data-theme="dark"] input[type="password"],
[data-theme="dark"] input[type="date"],
[data-theme="dark"] select,
[data-theme="dark"] textarea {
    background: #14161c;
    border-color: #313744;
    color: #f3f4f6;
}

[data-theme="dark"] .dropzone {
    background: #14171d;
    border-color: #313744;
}

/* 主题切换开关组件 */
.theme-switch-group {
    display: inline-flex;
    align-items: center;
    background: rgba(0, 0, 0, 0.05);
    border-radius: 20px;
    padding: 2px;
    border: 1px solid var(--border);
}
[data-theme="dark"] .theme-switch-group {
    background: rgba(255, 255, 255, 0.06);
}
.theme-switch-btn {
    border: none;
    background: transparent;
    color: var(--text-muted);
    font-size: 13px;
    padding: 4px 10px;
    border-radius: 16px;
    cursor: pointer;
    display: flex;
    align-items: center;
    gap: 4px;
    transition: all 0.2s;
    line-height: 1;
}
.theme-switch-btn.active {
    background: var(--surface);
    color: var(--text);
    font-weight: 600;
    box-shadow: 0 1px 3px rgba(0,0,0,0.1);
}

* { box-sizing: border-box; margin: 0; padding: 0; }

body {
    font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", "PingFang SC", "Hiragino Sans GB", "Microsoft YaHei", sans-serif;
    background: var(--bg);
    color: var(--text);
    line-height: 1.5;
    font-size: 14px;
    -webkit-font-smoothing: antialiased;
}

.container {
    max-width: 1040px;
    margin: 0 auto;
    padding: 0 20px;
}

/* 顶栏 */
.topbar {
    background: var(--surface);
    border-bottom: 1px solid var(--border);
    position: sticky;
    top: 0;
    z-index: 30;
}
.topbar-inner {
    display: flex;
    align-items: center;
    justify-content: space-between;
    height: 60px;
    gap: 12px;
}
.brand {
    display: flex;
    align-items: center;
    gap: 12px;
    min-width: 0;
}
.brand h1 {
    font-size: 16px;
    font-weight: 600;
    color: var(--text);
    letter-spacing: -0.2px;
    white-space: nowrap;
    overflow: hidden;
    text-overflow: ellipsis;
}
.back-link {
    color: var(--text-muted);
    text-decoration: none;
    font-size: 13px;
    white-space: nowrap;
    transition: color 0.15s;
}
.back-link:hover { color: var(--text); }
.topbar-actions {
    display: flex;
    gap: 8px;
    align-items: center;
    flex-shrink: 0;
}

/* 主容器 */
.main {
    padding-top: 24px;
    padding-bottom: 80px;
}
.list-head-summary {
    margin-bottom: 16px;
    font-size: 13px;
}

/* 按钮规范 */
.btn {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    padding: 8px 14px;
    border: 1px solid var(--border-strong);
    background: var(--surface);
    color: var(--text);
    border-radius: var(--radius);
    font-size: 13px;
    font-weight: 500;
    cursor: pointer;
    text-decoration: none;
    transition: all 0.15s ease;
    white-space: nowrap;
    min-height: 36px;
}
.btn:hover { background: #f3f4f6; border-color: #9ca3af; }
.btn-primary {
    background: var(--primary);
    color: var(--primary-fg);
    border-color: var(--primary);
}
.btn-primary:hover { background: #27272a; border-color: #27272a; color: #fff; }
.btn-secondary {
    background: var(--surface);
    color: var(--text);
    border-color: var(--border-strong);
}
.btn-secondary:hover { background: #f9fafb; border-color: #9ca3af; }
.btn-ghost {
    background: transparent;
    border-color: transparent;
    color: var(--text-muted);
}
.btn-ghost:hover { background: #f3f4f6; color: var(--text); }
.btn-danger {
    background: transparent;
    border-color: transparent;
    color: var(--danger);
}
.btn-danger:hover { background: var(--danger-bg); }
.btn-sm { padding: 4px 10px; font-size: 12px; min-height: 28px; }
.btn-lg { padding: 10px 20px; font-size: 14px; min-height: 42px; font-weight: 600; }
.btn-block { width: 100%; }

/* 提示条 */
.alert {
    padding: 12px 16px;
    border-radius: var(--radius);
    margin-bottom: 20px;
    font-size: 13px;
    border: 1px solid transparent;
}
.alert-success { background: var(--success-bg); color: var(--success); border-color: #bbf7d0; }
.alert-error { background: var(--danger-bg); color: var(--danger); border-color: #fecaca; }

/* 徽章 */
.badge {
    display: inline-flex;
    align-items: center;
    font-size: 11px;
    padding: 2px 7px;
    border-radius: 4px;
    white-space: nowrap;
    font-weight: 500;
    line-height: 1.4;
}
.badge-info { background: var(--info-bg); color: var(--info); }
.badge-muted { background: #f3f4f6; color: var(--text-muted); }

/* 有效期倒计时徽章 */
.countdown {
    display: inline-flex;
    align-items: center;
    font-size: 12px;
    padding: 2px 8px;
    border-radius: 4px;
    white-space: nowrap;
    font-weight: 600;
}
.countdown-ok { background: var(--success-bg); color: var(--success); }
.countdown-warning { background: var(--warn-bg); color: var(--warn); border: 1px solid #fde68a; }
.countdown-expired { background: var(--danger-bg); color: var(--danger); border: 1px solid #fecaca; }

/* 文本辅助 */
.muted { color: var(--text-muted); }
.required { color: var(--danger); margin-left: 2px; }

/* 空状态 */
.empty-state {
    text-align: center;
    padding: 72px 20px;
    background: var(--surface);
    border: 1px dashed var(--border-strong);
    border-radius: var(--radius);
}
.empty-icon { font-size: 40px; margin-bottom: 12px; }
.empty-state p { font-size: 15px; }
.empty-state .muted { font-size: 13px; margin-top: 6px; }

/* 卡片容器通用 */
.card {
    background: var(--surface);
    border: 1px solid var(--border);
    border-radius: var(--radius);
    box-shadow: var(--shadow-sm);
    padding: 24px;
    margin-bottom: 20px;
}

/* 活码列表卡片 */
.card-list {
    display: flex;
    flex-direction: column;
    gap: 16px;
}
.code-card {
    background: var(--surface);
    border: 1px solid var(--border);
    border-radius: var(--radius);
    box-shadow: var(--shadow-sm);
    padding: 22px;
    display: flex;
    gap: 24px;
    align-items: flex-start;
    transition: border-color 0.15s, box-shadow 0.15s;
}
.code-card:hover {
    border-color: var(--border-strong);
    box-shadow: var(--shadow-md);
}
.code-card-main {
    flex: 1;
    min-width: 0;
    display: flex;
    flex-direction: column;
    gap: 14px;
}
.code-card-header {
    display: flex;
    align-items: baseline;
    gap: 10px;
    flex-wrap: wrap;
}
.code-name {
    font-size: 16px;
    font-weight: 600;
    color: var(--text);
    word-break: break-all;
}
.badges-row {
    display: flex;
    align-items: center;
    gap: 6px;
    flex-wrap: wrap;
}

.code-meta {
    display: flex;
    flex-direction: column;
    gap: 10px;
    background: #f9fafb;
    padding: 12px 14px;
    border-radius: 6px;
    border: 1px solid #f3f4f6;
}
.meta-grid {
    display: grid;
    grid-template-columns: repeat(2, 1fr);
    gap: 12px;
}
.meta-item {
    display: flex;
    flex-direction: column;
    gap: 2px;
}
.meta-label {
    font-size: 11px;
    color: var(--text-muted);
    font-weight: 500;
    text-transform: uppercase;
    letter-spacing: 0.3px;
}
.meta-value {
    font-size: 13px;
    color: var(--text);
    display: flex;
    align-items: center;
    gap: 8px;
    flex-wrap: wrap;
}
.link-value {
    display: flex;
    align-items: center;
    gap: 8px;
    background: #ffffff;
    padding: 4px 8px;
    border-radius: 4px;
    border: 1px solid var(--border);
}
.link-text {
    font-family: ui-monospace, Menlo, Monaco, Consolas, monospace;
    font-size: 12px;
    color: var(--text);
    word-break: break-all;
    flex: 1;
    min-width: 0;
}

.code-actions {
    display: flex;
    gap: 8px;
    flex-wrap: wrap;
    align-items: center;
}
.btn-action {
    flex-shrink: 0;
}
.inline-form { display: inline; }

.code-card-qr {
    display: flex;
    flex-direction: column;
    align-items: center;
    gap: 6px;
    flex-shrink: 0;
}
.master-qr-box {
    width: 104px;
    height: 104px;
    padding: 4px;
    border: 1px solid var(--border);
    border-radius: 6px;
    background: #ffffff;
    box-shadow: 0 1px 3px rgba(0,0,0,0.02);
}
.master-qr {
    width: 100%;
    height: 100%;
    object-fit: contain;
    display: block;
}
.qr-caption {
    font-size: 11px;
    color: var(--text-muted);
}

/* 统计页排版 */
.stats-header {
    margin-bottom: 20px;
}
.stats-title {
    font-size: 18px;
    font-weight: 600;
}
.stats-summary {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: 16px;
    margin-bottom: 20px;
}
.stat-card {
    background: var(--surface);
    border: 1px solid var(--border);
    border-radius: var(--radius);
    padding: 18px 20px;
    box-shadow: var(--shadow-sm);
    display: flex;
    flex-direction: column;
    gap: 4px;
}
.stat-label {
    font-size: 12px;
    color: var(--text-muted);
}
.stat-value {
    font-size: 28px;
    font-weight: 700;
    line-height: 1.1;
    letter-spacing: -0.5px;
}
.stat-value.highlight { color: var(--info); }
.stat-unit {
    font-size: 12px;
    color: var(--text-muted);
}
.stat-flex {
    display: flex;
    align-items: center;
    gap: 8px;
}
.stat-value-text {
    font-size: 18px;
    font-weight: 600;
}

/* 筛选表单 */
.filter-card {
    padding: 18px 20px;
}
.filter-form {
    display: flex;
    flex-direction: column;
    gap: 12px;
}
.filter-inputs {
    display: flex;
    gap: 14px;
    align-items: flex-end;
    flex-wrap: wrap;
}
.filter-group {
    display: flex;
    flex-direction: column;
    gap: 4px;
}
.filter-group label {
    font-size: 12px;
    color: var(--text-muted);
    font-weight: 500;
}
.filter-group input[type="date"] {
    padding: 6px 10px;
    border: 1px solid var(--border-strong);
    border-radius: var(--radius);
    font-size: 13px;
    background: var(--surface);
    color: var(--text);
}
.filter-actions {
    display: flex;
    gap: 8px;
    align-items: center;
}
.filter-quick {
    display: flex;
    align-items: center;
    gap: 8px;
    flex-wrap: wrap;
    padding-top: 10px;
    border-top: 1px solid #f3f4f6;
}
.quick-label {
    font-size: 12px;
    color: var(--text-muted);
}
.export-btn {
    margin-left: auto;
}

/* 柱状图 */
.card-head {
    display: flex;
    align-items: center;
    justify-content: space-between;
    margin-bottom: 16px;
    flex-wrap: wrap;
    gap: 8px;
}
.section-title {
    font-size: 15px;
    font-weight: 600;
}
.daily-chart {
    display: flex;
    flex-direction: column;
    gap: 10px;
}
.daily-bar {
    display: grid;
    grid-template-columns: 50px 1fr 60px;
    align-items: center;
    gap: 12px;
}
.daily-date {
    font-size: 12px;
    color: var(--text-muted);
    font-variant-numeric: tabular-nums;
}
.daily-track {
    height: 18px;
    background: #f3f4f6;
    border-radius: 4px;
    overflow: hidden;
    min-width: 0;
}
.daily-fill {
    height: 100%;
    background: var(--primary);
    border-radius: 4px;
    transition: width 0.3s ease;
}
.daily-count {
    font-size: 12px;
    font-weight: 600;
    text-align: right;
    font-variant-numeric: tabular-nums;
}

/* 群码分流进度 */
.item-stats {
    display: flex;
    flex-direction: column;
    gap: 14px;
}
.item-stat {
    display: flex;
    gap: 12px;
    align-items: center;
}
.item-index {
    font-size: 13px;
    font-weight: 600;
    color: var(--text-muted);
    width: 24px;
    flex-shrink: 0;
}
.item-stat-info {
    flex: 1;
    min-width: 0;
    display: flex;
    flex-direction: column;
    gap: 6px;
}
.item-stat-row {
    display: flex;
    align-items: center;
    gap: 10px;
    font-size: 13px;
    flex-wrap: wrap;
}
.progress-track {
    height: 7px;
    background: #f3f4f6;
    border-radius: 4px;
    overflow: hidden;
}
.progress-fill {
    height: 100%;
    background: var(--info);
    border-radius: 4px;
    transition: width 0.3s ease;
}
.progress-fill.full { background: var(--warn); }

/* 表格 */
.table-container {
    width: 100%;
    overflow-x: auto;
    -webkit-overflow-scrolling: touch;
}
.data-table {
    width: 100%;
    border-collapse: collapse;
    font-size: 13px;
    text-align: left;
}
.data-table th, .data-table td {
    padding: 10px 12px;
    border-bottom: 1px solid var(--border);
    white-space: nowrap;
}
.data-table th {
    font-size: 12px;
    color: var(--text-muted);
    font-weight: 500;
    background: #f9fafb;
}

/* 表单样式 */
.form-card {
    display: flex;
    flex-direction: column;
    gap: 24px;
    padding: 28px;
}
.form-section {
    display: flex;
    flex-direction: column;
    gap: 16px;
    padding-bottom: 24px;
    border-bottom: 1px solid #f3f4f6;
}
.form-section:last-of-type {
    border-bottom: none;
    padding-bottom: 0;
}
.form-section-title {
    font-size: 15px;
    font-weight: 600;
    color: var(--text);
}
.section-title-row {
    display: flex;
    align-items: center;
    justify-content: space-between;
}
.field {
    display: flex;
    flex-direction: column;
    gap: 6px;
}
.field label {
    font-size: 13px;
    font-weight: 500;
    color: var(--text);
}
.field input[type="text"],
.field input[type="number"],
.field input[type="password"] {
    padding: 9px 12px;
    border: 1px solid var(--border-strong);
    border-radius: var(--radius);
    font-size: 14px;
    background: var(--surface);
    color: var(--text);
    transition: border-color 0.15s;
    width: 100%;
}
.field input:focus {
    outline: none;
    border-color: var(--primary);
}
.help {
    font-size: 12px;
    color: var(--text-muted);
}
.form-actions {
    display: flex;
    gap: 12px;
    align-items: center;
    padding-top: 8px;
}

/* 颜色选择器联动 */
.color-picker-wrapper {
    display: flex;
    align-items: center;
    gap: 10px;
    flex-wrap: wrap;
}
.color-picker-wrapper input[type="color"] {
    -webkit-appearance: none;
    border: 1px solid var(--border);
    width: 36px;
    height: 36px;
    border-radius: var(--radius);
    padding: 0;
    cursor: pointer;
    background: none;
}
.color-picker-wrapper input[type="color"]::-webkit-color-swatch-wrapper {
    padding: 2px;
}
.color-picker-wrapper input[type="color"]::-webkit-color-swatch {
    border-radius: 4px;
    border: none;
}
.color-hex-input {
    width: 110px !important;
    font-family: ui-monospace, Menlo, Monaco, monospace;
    font-size: 13px !important;
    text-transform: uppercase;
}
.color-presets {
    display: flex;
    align-items: center;
    gap: 6px;
}
.preset-label {
    font-size: 12px;
    color: var(--text-muted);
}
.color-dot {
    width: 24px;
    height: 24px;
    border-radius: 50%;
    border: 1px solid var(--border-strong);
    cursor: pointer;
    transition: transform 0.15s;
}
.color-dot:hover {
    transform: scale(1.15);
}

/* 轮询模式单选 */
.radio-group {
    display: grid;
    grid-template-columns: repeat(2, 1fr);
    gap: 12px;
}
.radio-item {
    display: flex;
    gap: 10px;
    align-items: flex-start;
    padding: 12px 14px;
    border: 1px solid var(--border);
    border-radius: var(--radius);
    cursor: pointer;
    transition: all 0.15s;
}
.radio-item:hover {
    border-color: var(--border-strong);
    background: #fcfcfc;
}
.radio-title {
    font-size: 13px;
    font-weight: 600;
}

/* 拖拽批量上传 Dropzone */
.dropzone {
    border: 2px dashed var(--border-strong);
    border-radius: var(--radius);
    background: #fafafa;
    padding: 28px 20px;
    text-align: center;
    cursor: pointer;
    position: relative;
    transition: all 0.2s ease;
}
.dropzone:hover, .dropzone.drag-over {
    border-color: var(--primary);
    background: #f4f4f5;
}
.dropzone-inner {
    display: flex;
    flex-direction: column;
    align-items: center;
    gap: 6px;
    pointer-events: none;
}
.dropzone-icon {
    color: var(--text-muted);
    margin-bottom: 4px;
}
.dropzone-text {
    font-size: 14px;
    color: var(--text);
}
.dropzone-sub {
    font-size: 12px;
    color: var(--text-muted);
}
.dropzone-file-input {
    display: none;
}

/* 群码配置列表 */
.qr-rows {
    display: flex;
    flex-direction: column;
    gap: 12px;
}
.qr-row {
    display: flex;
    gap: 14px;
    align-items: flex-start;
    padding: 14px;
    border: 1px solid var(--border);
    border-radius: var(--radius);
    background: #ffffff;
    box-shadow: 0 1px 2px rgba(0,0,0,0.02);
}
.qr-row-thumb {
    width: 68px;
    height: 68px;
    border: 1px dashed var(--border-strong);
    border-radius: var(--radius);
    overflow: hidden;
    flex-shrink: 0;
    display: flex;
    align-items: center;
    justify-content: center;
    background: #fafafa;
    position: relative;
}
.preview-empty {
    font-size: 11px;
    color: var(--text-light);
    text-align: center;
    padding: 4px;
}
.row-preview {
    max-width: 100%;
    max-height: 100%;
    object-fit: contain;
    display: none;
}
.row-preview.show { display: block; }
.qr-row-fields {
    flex: 1;
    min-width: 0;
    display: flex;
    flex-direction: column;
    gap: 8px;
}
.field-mini-label {
    font-size: 12px;
    color: var(--text-muted);
    font-weight: 500;
}
.qr-row-file {
    display: flex;
    flex-direction: column;
    gap: 4px;
}
.file-loaded-badge {
    font-size: 12px;
    color: var(--success);
    background: var(--success-bg);
    padding: 3px 8px;
    border-radius: 4px;
    display: inline-block;
    align-self: flex-start;
}
.qr-row-threshold {
    display: flex;
    flex-direction: column;
    gap: 4px;
}
.qr-threshold {
    width: 110px !important;
    padding: 5px 8px !important;
    font-size: 13px !important;
}
.remove-row {
    color: var(--text-light);
    font-size: 16px;
    padding: 4px 8px;
}
.remove-row:hover { color: var(--danger); }
.qr-rows-actions {
    margin-top: 4px;
}

/* 已有群码列表（编辑页） */
.existing-items {
    display: flex;
    flex-direction: column;
    gap: 10px;
}
.existing-item {
    display: flex;
    gap: 14px;
    align-items: flex-start;
    padding: 12px 14px;
    border: 1px solid var(--border);
    border-radius: var(--radius);
    background: #fcfcfc;
}
.existing-thumb-wrapper {
    position: relative;
    width: 60px;
    height: 60px;
    flex-shrink: 0;
}
.existing-thumb {
    width: 100%;
    height: 100%;
    object-fit: contain;
    border-radius: 4px;
    border: 1px solid var(--border);
    background: #fff;
}
.existing-idx {
    position: absolute;
    top: -4px;
    left: -4px;
    background: var(--primary);
    color: #fff;
    font-size: 10px;
    padding: 1px 4px;
    border-radius: 3px;
    font-weight: 600;
}
.existing-info {
    flex: 1;
    min-width: 0;
    display: flex;
    flex-direction: column;
    gap: 6px;
}
.existing-row {
    display: flex;
    align-items: center;
    gap: 10px;
    flex-wrap: wrap;
    font-size: 13px;
}
.existing-threshold {
    display: flex;
    align-items: center;
    gap: 6px;
    font-size: 12px;
}
.input-sm {
    width: 90px !important;
    padding: 4px 8px !important;
    font-size: 13px !important;
}
.delete-check {
    display: flex;
    align-items: center;
    gap: 6px;
    font-size: 12px;
    color: var(--danger);
    cursor: pointer;
    margin-top: 2px;
}

/* 编辑页左右分栏 */
.update-layout {
    display: grid;
    grid-template-columns: 280px 1fr;
    gap: 20px;
    align-items: start;
}
.info-card {
    text-align: center;
    padding: 24px;
    display: flex;
    flex-direction: column;
    gap: 14px;
}
.info-title {
    font-size: 15px;
    font-weight: 600;
}
.master-qr-container {
    width: 160px;
    height: 160px;
    margin: 0 auto;
    padding: 6px;
    border: 1px solid var(--border);
    border-radius: var(--radius);
    background: #ffffff;
}
.master-qr-large {
    width: 100%;
    height: 100%;
    object-fit: contain;
}
.info-link {
    display: flex;
    flex-direction: column;
    gap: 6px;
    align-items: center;
}

/* 落地展示页 */
body.landing {
    background: var(--surface);
    min-height: 100vh;
    display: flex;
    align-items: center;
    justify-content: center;
    padding: 24px;
}
.landing-card {
    text-align: center;
    max-width: 360px;
    width: 100%;
    transition: background 0.3s;
}
.landing-title {
    font-size: 20px;
    font-weight: 600;
    margin-bottom: 10px;
    color: #111827;
}
.hint {
    color: var(--text-muted);
    font-size: 14px;
    margin-bottom: 20px;
    line-height: 1.6;
}
.qr-image-wrapper {
    position: relative;
    display: inline-block;
    min-width: 248px;
    min-height: 248px;
}
.qr-image {
    display: inline-block;
    padding: 14px;
    border: 1px solid var(--border);
    border-radius: 12px;
    background: #ffffff;
    box-shadow: 0 4px 16px rgba(0,0,0,0.04);
}
.qr-image img {
    width: 220px;
    height: 220px;
    object-fit: contain;
    display: block;
}

/* 骨架屏（Skeleton Loader）微光扫光效果 */
.qr-skeleton {
    width: 248px;
    height: 248px;
    border-radius: 12px;
    border: 1px solid var(--border);
    background: #f3f4f6;
    position: relative;
    overflow: hidden;
    display: flex;
    align-items: center;
    justify-content: center;
    box-shadow: 0 4px 16px rgba(0,0,0,0.02);
}
.skeleton-shimmer {
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    background: linear-gradient(
        90deg,
        rgba(255, 255, 255, 0) 0%,
        rgba(255, 255, 255, 0.6) 50%,
        rgba(255, 255, 255, 0) 100%
    );
    animation: skeleton-sweep 1.6s infinite ease-in-out;
}
@keyframes skeleton-sweep {
    0% { transform: translateX(-100%); }
    100% { transform: translateX(100%); }
}
.skeleton-tip {
    position: relative;
    z-index: 2;
    font-size: 12px;
    color: var(--text-light);
    letter-spacing: 0.5px;
}

/* 二维码加载失败重试卡片 */
.qr-error-state {
    width: 248px;
    height: 248px;
    border-radius: 12px;
    border: 1px dashed var(--border-strong);
    background: #fafafa;
    display: flex;
    flex-direction: column;
    align-items: center;
    justify-content: center;
    padding: 20px;
    gap: 10px;
}
.qr-error-icon {
    font-size: 32px;
    line-height: 1;
}
.qr-error-text {
    font-size: 13px;
    color: var(--text-muted);
    text-align: center;
    margin: 0;
}
.retry-btn {
    margin-top: 4px;
}

.updated-at {
    margin-top: 14px;
    font-size: 12px;
    color: var(--text-muted);
}
.landing-icon {
    width: 52px;
    height: 52px;
    border-radius: 50%;
    background: var(--danger-bg);
    color: var(--danger);
    font-size: 24px;
    display: flex;
    align-items: center;
    justify-content: center;
    margin: 0 auto 14px;
}
.landing-icon.icon-warn {
    background: var(--warn-bg);
    color: var(--warn);
}

/* 移动端响应式排版与间距优化 (< 768px) */
@media (max-width: 768px) {
    .container {
        padding: 0 14px;
    }
    .main {
        padding-top: 16px;
        padding-bottom: 60px;
    }
    .topbar-inner {
        height: 52px;
    }
    .brand h1 {
        font-size: 15px;
    }
    
    /* 活码列表卡片响应式重构 */
    .card-list {
        gap: 12px;
    }
    .code-card {
        flex-direction: column;
        padding: 16px;
        gap: 14px;
    }
    .code-card-main {
        width: 100%;
        gap: 12px;
    }
    .meta-grid {
        grid-template-columns: 1fr;
        gap: 8px;
    }
    .code-actions {
        display: grid;
        grid-template-columns: repeat(2, 1fr);
        gap: 8px;
        width: 100%;
    }
    .code-actions .btn {
        width: 100%;
        min-height: 38px;
    }
    .code-actions .inline-form {
        display: block;
        width: 100%;
    }
    .code-card-qr {
        align-self: center;
        flex-direction: column;
        padding-top: 8px;
        border-top: 1px dashed var(--border);
        width: 100%;
    }
    .master-qr-box {
        width: 110px;
        height: 110px;
    }

    /* 编辑页左右结构变为单列 */
    .update-layout {
        grid-template-columns: 1fr;
        gap: 14px;
    }
    .form-card {
        padding: 18px 16px;
        gap: 18px;
    }

    /* 统计页移动端适配 */
    .stats-summary {
        grid-template-columns: 1fr;
        gap: 10px;
    }
    .stat-card {
        padding: 14px 16px;
    }
    .stat-value {
        font-size: 24px;
    }
    .filter-inputs {
        flex-direction: column;
        align-items: stretch;
    }
    .filter-group input[type="date"] {
        width: 100%;
    }
    .filter-actions {
        width: 100%;
    }
    .filter-actions .btn {
        flex: 1;
    }
    .export-btn {
        margin-left: 0;
        width: 100%;
        margin-top: 6px;
    }
    .radio-group {
        grid-template-columns: 1fr;
    }
    .qr-row {
        flex-direction: column;
        padding: 12px;
    }
    .qr-row-thumb {
        width: 80px;
        height: 80px;
    }
    .remove-row {
        align-self: flex-end;
        margin-top: -30px;
    }
}

/* 渠道分析与地域分布样式 */
.channel-chart-list {
    display: flex;
    flex-direction: column;
    gap: 12px;
}
.channel-bar-item {
    background: var(--bg-subtle);
    padding: 12px 14px;
    border-radius: var(--radius-sm);
    border: 1px solid var(--border);
}
.channel-bar-header {
    display: flex;
    justify-content: space-between;
    align-items: center;
    margin-bottom: 8px;
    flex-wrap: wrap;
    gap: 8px;
}
.channel-badge {
    font-weight: 600;
    font-size: 13px;
    color: var(--text-main);
}
.channel-metrics {
    font-size: 12px;
    color: var(--text-muted);
    display: flex;
    align-items: center;
    gap: 12px;
    flex-wrap: wrap;
}
.conversion-pill {
    background: #e6f7ec;
    color: #1a7f37;
    padding: 2px 8px;
    border-radius: 10px;
    font-weight: 500;
}
[data-theme="dark"] .conversion-pill {
    background: rgba(35, 134, 54, 0.2);
    color: #3fb950;
}
.channel-track {
    height: 7px;
    background: var(--border);
    border-radius: 4px;
    overflow: hidden;
}
.channel-fill {
    height: 100%;
    background: var(--primary);
    border-radius: 4px;
    transition: width 0.4s ease;
}

/* 地域渗透分布布局 */
.geo-layout {
    display: grid;
    grid-template-columns: 1.2fr 1fr;
    gap: 16px;
}
@media (max-width: 768px) {
    .geo-layout {
        grid-template-columns: 1fr;
    }
}
.geo-box {
    background: var(--bg-subtle);
    border: 1px solid var(--border);
    border-radius: var(--radius-sm);
    padding: 16px;
}
.geo-box-title {
    font-size: 14px;
    font-weight: 600;
    margin: 0 0 14px 0;
    color: var(--text-main);
}
.geo-bar-list {
    display: flex;
    flex-direction: column;
    gap: 10px;
}
.geo-bar-item {
    display: flex;
    align-items: center;
    gap: 8px;
    font-size: 13px;
}
.geo-rank {
    width: 20px;
    height: 20px;
    border-radius: 50%;
    background: var(--border);
    color: var(--text-muted);
    font-size: 11px;
    font-weight: 600;
    display: inline-flex;
    align-items: center;
    justify-content: center;
    flex-shrink: 0;
}
.geo-rank.top {
    background: var(--primary);
    color: #fff;
}
.geo-name {
    width: 60px;
    font-weight: 500;
    flex-shrink: 0;
    color: var(--text-main);
}
.geo-track {
    flex: 1;
    height: 6px;
    background: var(--border);
    border-radius: 3px;
    overflow: hidden;
}
.geo-fill {
    height: 100%;
    background: var(--primary);
    border-radius: 3px;
    transition: width 0.3s;
}
.geo-cnt {
    font-size: 12px;
    font-weight: 600;
    width: 65px;
    text-align: right;
    color: var(--text-main);
}
.geo-ratio {
    font-size: 11px;
    color: var(--text-muted);
    width: 45px;
    text-align: right;
}

/* 城市卡片网格 */
.city-tags-grid {
    display: grid;
    grid-template-columns: repeat(auto-fill, minmax(105px, 1fr));
    gap: 8px;
}
.city-tag-card {
    background: var(--bg-card);
    border: 1px solid var(--border);
    border-radius: 6px;
    padding: 8px 10px;
    text-align: center;
}
.city-tag-name {
    font-size: 12px;
    font-weight: 600;
    color: var(--text-main);
}
.city-tag-count {
    font-size: 11px;
    color: var(--primary);
    margin-top: 2px;
    font-weight: 600;
}
.city-tag-count span {
    font-size: 10px;
    color: var(--text-muted);
    font-weight: normal;
}


/* ---------------------------------------------------------------
   前台工具箱（tool_qr / tool_convert / tool_9grid / tools）
   --------------------------------------------------------------- */
.tool-card { display: flex; align-items: center; gap: 16px; padding: 18px 20px; text-decoration: none; color: var(--text); }
.tool-card:hover { border-color: var(--text); }
.tool-icon { flex: 0 0 44px; height: 44px; display: flex; align-items: center; justify-content: center; font-size: 22px; background: #f3f4f6; border-radius: 10px; }
.tool-body { flex: 1; min-width: 0; }
.tool-title { margin: 0; font-size: 15px; font-weight: 600; display: flex; align-items: center; gap: 8px; }
.tool-arrow { flex: 0 0 auto; font-size: 22px; color: var(--text-muted); }
.tool-colors-row { display: flex; gap: 16px; flex-wrap: wrap; }
.tool-colors-row .field { flex: 1; min-width: 140px; }
.field input[type="color"] { width: 100%; height: 40px; padding: 4px; border: 1px solid #e5e7eb; border-radius: 8px; background: #fff; cursor: pointer; }
.field select { width: 100%; height: 40px; padding: 0 10px; border: 1px solid #e5e7eb; border-radius: 8px; background: #fff; font-size: 14px; color: var(--text); }
.preset-select { margin-bottom: 8px; }
.qr-result-img { display: block; margin: 0 auto 16px; max-width: 320px; width: 100%; height: auto; border: 1px solid #e5e7eb; border-radius: 8px; }
.tool-compare-row { display: flex; gap: 16px; flex-wrap: wrap; margin-bottom: 8px; }
.tool-compare-item { flex: 1; min-width: 180px; display: flex; flex-direction: column; gap: 6px; }
.tool-preview-img { width: 100%; max-width: 280px; height: auto; border: 1px solid #e5e7eb; border-radius: 8px; }
.grid9 { display: grid; grid-template-columns: repeat(3, 1fr); gap: 4px; max-width: 360px; margin: 0 auto; }
.grid9-img { display: block; width: 100%; height: auto; }
.field textarea { width: 100%; padding: 10px 12px; border: 1px solid #e5e7eb; border-radius: 8px; font-size: 14px; color: var(--text); background: #fff; resize: vertical; font-family: inherit; }
.field textarea:focus { outline: none; border-color: var(--text); }

/* 批量生码标签页（打印友好） */
.label-grid { display: grid; grid-template-columns: repeat(3, 1fr); gap: 10px; }
.qr-label { border: 1px dashed #cbd5e1; border-radius: 8px; padding: 10px; text-align: center; page-break-inside: avoid; }
.qr-label img { width: 100%; max-width: 150px; height: auto; }
.qr-label .label-name { font-size: 13px; font-weight: 600; margin: 6px 0 2px; word-break: break-all; }
.qr-label .label-link { font-size: 10px; color: var(--text-muted); word-break: break-all; }
@media print {
    .topbar, .no-print { display: none !important; }
    body { background: #fff; }
    .container { max-width: 100%; padding: 0; }
    .card { border: none; box-shadow: none; padding: 0; }
    .label-grid { gap: 6px; }
}

/* ---------------------------------------------------------------
   首页核心功能卡片（feature-grid）
   每卡通过内联 --ac 指定强调色；--ac-soft 为 12% 透明底，明暗主题通用
   --------------------------------------------------------------- */
.feature-grid { display: grid; grid-template-columns: repeat(3, 1fr); gap: 14px; }
.feature-card {
    --ac-soft: color-mix(in srgb, var(--ac, #1d4ed8) 12%, transparent);
    position: relative;
    padding: 20px 18px;
    background: var(--surface);
    border: 1px solid var(--border);
    border-radius: 12px;
    transition: transform 0.18s ease, box-shadow 0.18s ease, border-color 0.18s ease;
}
.feature-card::before {
    content: '';
    position: absolute;
    inset: 0 0 auto 0;
    height: 3px;
    border-radius: 12px 12px 0 0;
    background: var(--ac, var(--primary));
    opacity: 0;
    transition: opacity 0.18s ease;
}
.feature-card:hover {
    transform: translateY(-3px);
    border-color: color-mix(in srgb, var(--ac, var(--primary)) 45%, var(--border));
    box-shadow: var(--shadow-md);
}
.feature-card:hover::before { opacity: 1; }
.feature-icon {
    width: 44px;
    height: 44px;
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 22px;
    border-radius: 10px;
    background: var(--ac-soft);
    margin-bottom: 12px;
}
.feature-title { margin: 0 0 6px; font-size: 15px; font-weight: 700; color: var(--text); }
.feature-desc { margin: 0; font-size: 13px; line-height: 1.55; color: var(--text-muted); }
@media (max-width: 720px) {
    .feature-grid { grid-template-columns: repeat(2, 1fr); gap: 10px; }
    .feature-card { padding: 16px 14px; }
    .feature-icon { width: 38px; height: 38px; font-size: 19px; }
}
@media (max-width: 460px) {
    .feature-grid { grid-template-columns: 1fr; }
}

/* ---------------------------------------------------------------
   登录 / 注册页（body.auth + .auth-card，登录与注册共用）
   --------------------------------------------------------------- */
body.auth {
    min-height: 100vh;
    display: grid;
    place-items: center;
    padding: 24px 16px;
    background:
        radial-gradient(600px 400px at 12% 8%, color-mix(in srgb, var(--info) 9%, transparent), transparent 70%),
        radial-gradient(520px 380px at 88% 92%, color-mix(in srgb, var(--success) 8%, transparent), transparent 70%),
        var(--bg);
}
.auth-card {
    width: min(410px, 100%);
    background: var(--surface);
    border: 1px solid var(--border);
    border-radius: 16px;
    padding: 36px 32px 30px;
    box-shadow: var(--shadow-md);
    animation: auth-rise 0.35s ease both;
}
@keyframes auth-rise {
    from { opacity: 0; transform: translateY(14px); }
    to   { opacity: 1; transform: translateY(0); }
}
.auth-logo {
    width: 52px;
    height: 52px;
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 26px;
    border-radius: 14px;
    background: color-mix(in srgb, var(--info) 12%, transparent);
    margin: 0 auto 16px;
}
.auth-card h1 {
    margin: 0 0 4px;
    font-size: 22px;
    text-align: center;
    color: var(--text);
}
.auth-card .subtitle {
    margin: 0 0 24px;
    font-size: 13.5px;
    color: var(--text-muted);
    text-align: center;
}
.auth-card .field { margin-bottom: 16px; }
.auth-card .field label {
    display: block;
    font-size: 13px;
    font-weight: 600;
    color: var(--text);
    margin-bottom: 6px;
}
.auth-card .field input {
    width: 100%;
    height: 44px;
    padding: 0 12px;
    font-size: 14.5px;
    color: var(--text);
    background: var(--surface);
    border: 1px solid var(--border-strong);
    border-radius: 10px;
    transition: border-color 0.15s ease, box-shadow 0.15s ease;
}
.auth-card .field input:focus {
    outline: none;
    border-color: var(--info);
    box-shadow: 0 0 0 3px color-mix(in srgb, var(--info) 18%, transparent);
}
.auth-card .btn-block {
    width: 100%;
    height: 46px;
    font-size: 15px;
    margin-top: 6px;
    border-radius: 10px;
}
.auth-card .help a { color: var(--info); font-weight: 600; text-decoration: none; }
.auth-card .help a:hover { text-decoration: underline; }

/* 同意用户协议 / 隐私政策勾选（登录、注册页共用） */
.auth-card .agree-row {
    display: flex;
    align-items: flex-start;
    gap: 9px;
    margin: 2px 0 16px;
    font-size: 12.5px;
    line-height: 1.65;
    color: var(--text-muted);
}
.auth-card .agree-row input[type="checkbox"] {
    flex: 0 0 auto;
    width: 15px;
    height: 15px;
    margin: 2px 0 0;
    accent-color: var(--info);
    cursor: pointer;
}
.auth-card .agree-row .agree-text { flex: 1 1 auto; }
.auth-card .agree-row a { color: var(--info); font-weight: 600; text-decoration: none; }
.auth-card .agree-row a:hover { text-decoration: underline; }

/* ---------------------------------------------------------------
   工具箱页（.tool-grid 网格卡片，每卡内联 --ac 强调色）
   --------------------------------------------------------------- */
.tool-grid {
    display: grid;
    grid-template-columns: repeat(2, 1fr);
    gap: 14px;
}
.tool-card {
    --ac-soft: color-mix(in srgb, var(--ac, #1d4ed8) 12%, transparent);
    display: flex;
    align-items: flex-start;
    gap: 14px;
    padding: 18px;
    background: var(--surface);
    border: 1px solid var(--border);
    border-radius: 12px;
    text-decoration: none;
    color: var(--text);
    transition: transform 0.18s ease, box-shadow 0.18s ease, border-color 0.18s ease;
}
.tool-card:hover {
    transform: translateY(-3px);
    border-color: color-mix(in srgb, var(--ac, var(--primary)) 45%, var(--border));
    box-shadow: var(--shadow-md);
}
.tool-card:hover .tool-arrow { transform: translateX(4px); color: var(--ac, var(--text)); }
.tool-icon {
    flex: 0 0 46px;
    height: 46px;
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 23px;
    background: var(--ac-soft);
    border-radius: 12px;
}
.tool-body { flex: 1; min-width: 0; }
.tool-title {
    margin: 2px 0 0;
    font-size: 15px;
    font-weight: 700;
    display: flex;
    align-items: center;
    flex-wrap: wrap;
    gap: 8px;
}
.tool-desc { margin: 5px 0 0; font-size: 13px; line-height: 1.6; color: var(--text-muted); }
.tool-arrow {
    flex: 0 0 auto;
    align-self: center;
    font-size: 24px;
    color: var(--text-muted);
    transition: transform 0.18s ease, color 0.18s ease;
}
@media (max-width: 680px) {
    .tool-grid { grid-template-columns: 1fr; gap: 10px; }
    .tool-card { padding: 15px; }
}

/* ---------------------------------------------------------------
   数据换算类工具页（时间戳/进制/日期/单位/计算器/房贷/五险一金/BMI/投资）
   --------------------------------------------------------------- */
.subtabs { display: flex; gap: 8px; flex-wrap: wrap; margin-bottom: 18px; }
.subtab {
    padding: 7px 16px;
    font-size: 13px;
    border: 1px solid var(--border);
    border-radius: 18px;
    background: var(--surface);
    color: var(--text-muted);
    cursor: pointer;
    transition: all 0.15s ease;
}
.subtab:hover { border-color: var(--border-strong); color: var(--text); }
.subtab.active { background: var(--primary); color: var(--primary-fg); border-color: var(--primary); font-weight: 600; }
.calc-result {
    margin-top: 16px;
    padding: 14px 16px;
    background: var(--info-bg);
    border: 1px solid color-mix(in srgb, var(--info) 30%, transparent);
    border-radius: 10px;
    font-size: 14px;
    line-height: 1.8;
    color: var(--text);
}
.calc-result strong { font-size: 17px; }
.calc-result .muted { color: var(--text-muted); font-size: 12.5px; }
.calc-error {
    margin-top: 16px;
    padding: 12px 16px;
    background: var(--danger-bg);
    border: 1px solid color-mix(in srgb, var(--danger) 30%, transparent);
    border-radius: 10px;
    font-size: 13.5px;
    color: var(--danger);
}
.kv-table { width: 100%; border-collapse: collapse; margin-top: 8px; }
.kv-table th, .kv-table td { padding: 7px 10px; text-align: right; font-size: 13.5px; border-bottom: 1px solid var(--border); }
.kv-table th:first-child, .kv-table td:first-child { text-align: left; color: var(--text-muted); }
.kv-table th { color: var(--text); font-weight: 600; background: var(--bg); }
.calc-grid { display: grid; grid-template-columns: repeat(4, 1fr); gap: 8px; max-width: 320px; margin: 0 auto; }
.calc-key {
    height: 52px;
    font-size: 17px;
    border: 1px solid var(--border);
    border-radius: 10px;
    background: var(--surface);
    color: var(--text);
    cursor: pointer;
    transition: background 0.12s ease, transform 0.08s ease;
}
.calc-key:hover { background: var(--bg); }
.calc-key:active { transform: scale(0.96); }
.calc-key.op { color: var(--info); font-weight: 600; }
.calc-key.eq { background: var(--primary); color: var(--primary-fg); border-color: var(--primary); font-weight: 700; }
.calc-key.fn { font-size: 14px; }
.calc-display {
    width: 100%;
    height: 56px;
    margin-bottom: 12px;
    padding: 0 14px;
    font-size: 22px;
    text-align: right;
    font-variant-numeric: tabular-nums;
    border: 1px solid var(--border-strong);
    border-radius: 10px;
    background: var(--bg);
    color: var(--text);
}
.ts-live {
    display: inline-block;
    padding: 6px 14px;
    background: var(--info-bg);
    border-radius: 18px;
    font-variant-numeric: tabular-nums;
    font-size: 14px;
    color: var(--info);
    font-weight: 600;
}
.mono { font-family: Consolas, Monaco, monospace; }

/* 工具箱区块标题与顶部锚点 */
.tool-section { margin-top: 26px; scroll-margin-top: 80px; }
.tool-section-title {
    margin: 0 0 14px;
    font-size: 15px;
    font-weight: 700;
    color: var(--text);
    display: flex;
    align-items: center;
    gap: 10px;
}
.tool-section-title::after {
    content: '';
    flex: 1;
    height: 1px;
    background: var(--border);
}
.brand-anchor {
    margin-left: 6px;
    font-size: 13px;
    color: var(--info);
    text-decoration: none;
    font-weight: 600;
    padding: 4px 12px;
    border: 1px solid color-mix(in srgb, var(--info) 35%, transparent);
    border-radius: 14px;
    background: var(--info-bg);
    white-space: nowrap;
    transition: all 0.15s ease;
}
.brand-anchor:hover { border-color: var(--info); }

/* ---------------------------------------------------------------
   文本工具（简繁转换 / 拼音 / 文本比较 / 去重 / 隐写 / 朗读 / 火星文）
   --------------------------------------------------------------- */
.field-row { display: flex; gap: 14px; flex-wrap: wrap; align-items: flex-end; margin-bottom: 14px; }
.field-row > .field { flex: 1 1 180px; min-width: 150px; margin-bottom: 0; }
.field-btn { flex: 0 0 auto; min-width: 148px; }
.field-label { display: block; font-size: 13px; font-weight: 600; color: var(--text); margin-bottom: 6px; }
.result-head { display: flex; align-items: center; justify-content: space-between; gap: 12px; flex-wrap: wrap; margin-bottom: 12px; }
.result-title { margin: 0; font-size: 15px; font-weight: 700; color: var(--text); }
.result-actions { display: flex; align-items: center; gap: 8px; flex-wrap: wrap; }
.text-out {
    width: 100%;
    padding: 12px 14px;
    font-size: 14px;
    line-height: 1.75;
    color: var(--text);
    background: var(--bg);
    border: 1px solid var(--border);
    border-radius: 10px;
    resize: vertical;
    font-family: inherit;
}
.help-card { background: var(--bg); }
.opt-row { display: flex; align-items: center; gap: 16px; flex-wrap: wrap; margin-top: 14px; }
.opt { display: flex; align-items: center; gap: 6px; font-size: 13px; color: var(--text-muted); cursor: pointer; }
.opt input { width: 16px; height: 16px; accent-color: var(--primary); cursor: pointer; }
.stat-chips { display: flex; gap: 10px; flex-wrap: wrap; }
.chip {
    padding: 6px 14px;
    font-size: 13px;
    border-radius: 16px;
    background: var(--surface);
    border: 1px solid var(--border);
    color: var(--text-muted);
}
.chip b { color: var(--text); font-size: 14px; }
.chip-add { background: var(--success-bg); border-color: var(--success); color: var(--success); }
.chip-add b { color: var(--success); }
.chip-del { background: var(--danger-bg); border-color: var(--danger); color: var(--danger); }
.chip-del b { color: var(--danger); }
.chip-mod { background: var(--warn-bg); border-color: var(--warn); color: var(--warn); }
.chip-mod b { color: var(--warn); }
.pane { animation: pane-in 0.18s ease both; }
@keyframes pane-in { from { opacity: 0; transform: translateY(4px); } to { opacity: 1; transform: none; } }
input[type="range"] { width: 100%; accent-color: var(--primary); cursor: pointer; }
.range-val { font-weight: 600; color: var(--info); font-size: 12.5px; }

/* 文本比较：并排差异视图 */
.diff-card { padding: 0; overflow: hidden; }
.diff-head {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 1px;
    background: var(--border);
    font-size: 12px;
    font-weight: 600;
    color: var(--text-muted);
}
.diff-col-title { background: var(--bg); padding: 8px 14px; }
.diff-body { max-height: 580px; overflow: auto; background: var(--surface); }
.diff-row {
    display: grid;
    grid-template-columns: 48px 1fr 48px 1fr;
    font-family: Consolas, Monaco, "Courier New", monospace;
    font-size: 13px;
    line-height: 1.65;
    border-bottom: 1px solid var(--border);
}
.diff-row:last-child { border-bottom: none; }
.diff-no {
    text-align: right;
    padding: 3px 8px;
    color: var(--text-light);
    background: var(--bg);
    user-select: none;
    font-size: 11.5px;
}
.diff-cell { padding: 3px 10px; white-space: pre-wrap; word-break: break-word; color: var(--text); }
.diff-row.eq .diff-cell { color: var(--text-muted); }
.diff-row.mod { background: var(--warn-bg); }
.diff-row.del { background: var(--danger-bg); }
.diff-row.add { background: var(--success-bg); }
.del-whole { background: color-mix(in srgb, var(--danger) 22%, transparent); border-radius: 3px; }
.add-whole { background: color-mix(in srgb, var(--success) 22%, transparent); border-radius: 3px; }
.diff-cell ins { background: color-mix(in srgb, var(--success) 30%, transparent); text-decoration: none; border-radius: 3px; }
.diff-cell del { background: color-mix(in srgb, var(--danger) 26%, transparent); border-radius: 3px; }
@media (max-width: 680px) {
    .diff-row { grid-template-columns: 32px 1fr 32px 1fr; font-size: 12px; }
    .diff-no { padding: 2px 4px; font-size: 10.5px; }
    .diff-cell { padding: 2px 6px; }
}

/* 工具箱顶栏有两个锚点，窄屏下允许换行不挤压 */
@media (max-width: 760px) {
    .topbar-inner { height: auto; min-height: 60px; flex-wrap: wrap; padding: 8px 0; }
    .brand { flex-wrap: wrap; gap: 6px 10px; }
    .brand-anchor { font-size: 12px; padding: 3px 9px; }
}

/* ==========================================================================
   V11 前台内容展示（栏目列表 / 内容详情 / 站点页脚备案信息）
   ========================================================================== */
.article-list { display: flex; flex-direction: column; gap: 12px; }
.article-item {
    display: flex; gap: 14px; padding: 14px;
    background: var(--surface); border: 1px solid var(--border); border-radius: 10px;
    transition: border-color .15s, box-shadow .15s;
}
.article-item:hover { border-color: var(--border-strong); box-shadow: var(--shadow-sm); }
.article-item-cover {
    width: 120px; height: 80px; object-fit: cover;
    border-radius: 8px; flex: 0 0 auto; background: var(--bg);
}
.article-item-body { min-width: 0; flex: 1; }
.article-item-title { margin: 0 0 5px; font-size: 15.5px; font-weight: 700; }
.article-item-title a { color: var(--text); text-decoration: none; }
.article-item-title a:hover { color: var(--info); }
.article-item-sum { margin: 0; font-size: 13px; color: var(--text-muted); line-height: 1.6; }
.article-item-meta {
    margin-top: 7px; font-size: 12px; color: var(--text-light);
    display: flex; gap: 12px; flex-wrap: wrap;
}
@media (max-width: 560px) { .article-item-cover { display: none; } }

.article-detail { padding: 0; overflow: hidden; }
.article-detail-head { padding: 24px 26px 16px; border-bottom: 1px solid var(--border); }
.article-detail-title { margin: 0 0 10px; font-size: 22px; font-weight: 700; line-height: 1.35; letter-spacing: -.3px; }
.article-detail-meta { font-size: 12.5px; color: var(--text-light); display: flex; gap: 14px; flex-wrap: wrap; }
.article-detail-sub { margin: -4px 0 10px; font-size: 13.5px; color: var(--text-muted); }

/* 单页（用户协议 / 隐私政策 / 关于我们 / 联系我们）专用：联系方式卡片 */
.contact-card {
    display: flex;
    align-items: center;
    gap: 12px;
    padding: 14px 16px;
    margin: 0 0 20px;
    background: var(--info-bg);
    border: 1px solid var(--border);
    border-radius: 10px;
}
.contact-card-icon { font-size: 20px; line-height: 1; }
.contact-card-body { display: flex; flex-direction: column; gap: 3px; }
.contact-card-body strong { font-size: 12px; font-weight: 600; color: var(--text-muted); }
.contact-card-body a { font-size: 15px; font-weight: 600; color: var(--info); text-decoration: none; }
.contact-card-body a:hover { text-decoration: underline; }
.article-body {
    padding: 22px 26px 28px;
    font-size: 15px; line-height: 1.85; color: var(--text);
    overflow-wrap: break-word;
}
.article-body img { max-width: 100%; height: auto; border-radius: 6px; }
.article-body h2 { font-size: 19px; margin: 24px 0 10px; }
.article-body h3 { font-size: 16.5px; margin: 20px 0 8px; }
.article-body p { margin: 12px 0; }
.article-body ul, .article-body ol { margin: 12px 0 12px 24px; }
.article-body a { color: var(--info); }
.article-body blockquote {
    margin: 14px 0; padding: 10px 16px;
    border-left: 3px solid var(--border-strong);
    background: var(--bg); color: var(--text-muted);
}
.article-body pre {
    background: var(--bg); border: 1px solid var(--border);
    padding: 12px 14px; border-radius: 8px; overflow-x: auto;
    font-size: 13px;
}
.article-body table { width: 100%; border-collapse: collapse; margin: 14px 0; }
.article-body th, .article-body td { border: 1px solid var(--border); padding: 8px 10px; font-size: 13.5px; }
@media (max-width: 560px) {
    .article-detail-head { padding: 18px 16px 14px; }
    .article-body { padding: 16px; }
    .article-detail-title { font-size: 19px; }
}

.site-footer {
    margin-top: 40px; padding: 22px 0 34px;
    border-top: 1px solid var(--border);
    text-align: center; font-size: 12.5px; color: var(--text-muted);
    line-height: 1.9;
}
.site-footer a { color: var(--text-muted); text-decoration: none; }
.site-footer a:hover { color: var(--text); text-decoration: underline; }
.site-footer .footer-links {
    display: flex; gap: 14px; justify-content: center; flex-wrap: wrap; margin-bottom: 6px;
}
.site-footer .footer-sep { margin: 0 4px; color: var(--border-strong); }

/* ---------------------------------------------------------------
   站长工具（/webmaster.php 与 /webmaster/*.php）
   --------------------------------------------------------------- */
.wm-toolnav { display: flex; flex-wrap: wrap; gap: 8px; }
.wm-toolnav a {
    padding: 5px 12px;
    font-size: 13px;
    border: 1px solid var(--border);
    border-radius: 16px;
    background: var(--bg);
    color: var(--text-muted);
    text-decoration: none;
    transition: all 0.15s ease;
}
.wm-toolnav a:hover { border-color: var(--border-strong); color: var(--text); background: var(--surface); }

.wm-toolbar { display: flex; flex-wrap: wrap; gap: 8px; margin-bottom: 12px; }
.wm-toolbar .btn { font-size: 13px; padding: 7px 14px; }

.wm-row2 { display: grid; grid-template-columns: 1fr 1fr; gap: 14px; }
@media (max-width: 760px) { .wm-row2 { grid-template-columns: 1fr; } }

.wm-out {
    width: 100%;
    margin: 0;
    padding: 12px 14px;
    font-family: ui-monospace, Menlo, Monaco, Consolas, monospace;
    font-size: 13px;
    line-height: 1.65;
    color: var(--text);
    background: var(--bg);
    border: 1px solid var(--border);
    border-radius: 9px;
    white-space: pre-wrap;
    word-break: break-all;
    max-height: 460px;
    min-height: 120px;
    overflow: auto;
}
.wm-out.is-error { background: var(--danger-bg); border-color: color-mix(in srgb, var(--danger) 30%, transparent); color: var(--danger); }

.wm-metric-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(132px, 1fr));
    gap: 10px;
    margin-bottom: 16px;
}
.wm-metric {
    padding: 12px 14px;
    background: var(--surface);
    border: 1px solid var(--border);
    border-radius: 10px;
}
.wm-metric-label { font-size: 12px; color: var(--text-muted); }
.wm-metric-value { margin-top: 4px; font-size: 18px; font-weight: 700; line-height: 1.3; word-break: break-all; }
.wm-metric-value.ok { color: var(--success); }
.wm-metric-value.warn { color: var(--warn); }
.wm-metric-value.bad { color: var(--danger); }

.wm-checks { display: grid; gap: 8px; }
.wm-check {
    display: flex;
    gap: 10px;
    align-items: flex-start;
    padding: 10px 12px;
    background: var(--surface);
    border: 1px solid var(--border);
    border-radius: 9px;
    font-size: 13.5px;
    line-height: 1.6;
}
.wm-check-dot {
    flex: 0 0 auto;
    width: 20px; height: 20px;
    margin-top: 1px;
    display: flex; align-items: center; justify-content: center;
    border-radius: 50%;
    font-size: 12px; font-weight: 700; color: #fff;
    background: var(--text-light);
}
.wm-check.ok .wm-check-dot { background: var(--success); }
.wm-check.warn .wm-check-dot { background: var(--warn); }
.wm-check.bad .wm-check-dot { background: var(--danger); }
.wm-check-body { flex: 1 1 auto; min-width: 0; }
.wm-check-title { font-weight: 600; color: var(--text); }
.wm-check-hint { margin-top: 2px; font-size: 12.5px; color: var(--text-muted); word-break: break-all; }

.wm-kv { width: 100%; border-collapse: collapse; font-size: 13.5px; }
.wm-kv th, .wm-kv td { padding: 7px 10px; border-bottom: 1px solid var(--border); text-align: left; vertical-align: top; }
.wm-kv tr:last-child th, .wm-kv tr:last-child td { border-bottom: none; }
.wm-kv th { width: 34%; color: var(--text-muted); font-weight: 500; }
.wm-kv code, .wm-inline-code {
    font-family: ui-monospace, Consolas, Monaco, monospace;
    font-size: 12.5px;
    word-break: break-all;
    background: var(--bg);
    padding: 1px 5px;
    border-radius: 4px;
    border: 1px solid var(--border);
}

.wm-tag { display: inline-block; padding: 1px 7px; border-radius: 5px; font-size: 11.5px; font-weight: 600; }
.wm-tag.ok { background: var(--success-bg); color: var(--success); }
.wm-tag.warn { background: var(--warn-bg); color: var(--warn); }
.wm-tag.bad { background: var(--danger-bg); color: var(--danger); }
.wm-tag.muted { background: #f3f4f6; color: var(--text-muted); }

.wm-note { font-size: 12.5px; color: var(--text-muted); line-height: 1.75; }

.wm-mark {
    padding: 0 1px;
    border-radius: 3px;
    background: color-mix(in srgb, var(--info) 26%, transparent);
    box-shadow: inset 0 -1px 0 var(--info);
}
.wm-regex-pre {
    font-family: ui-monospace, Consolas, Monaco, monospace;
    font-size: 13px;
    line-height: 1.75;
    white-space: pre-wrap;
    word-break: break-word;
    background: var(--bg);
    border: 1px solid var(--border);
    border-radius: 9px;
    padding: 12px 14px;
    max-height: 340px;
    overflow: auto;
    margin: 0;
}

.wm-ref-table { width: 100%; border-collapse: collapse; font-size: 13px; }
.wm-ref-table th, .wm-ref-table td { padding: 7px 10px; border-bottom: 1px solid var(--border); text-align: left; vertical-align: top; }
.wm-ref-table th { background: var(--bg); font-weight: 600; color: var(--text); position: sticky; top: 0; z-index: 1; }
.wm-ref-table tbody tr:hover { background: color-mix(in srgb, var(--info) 5%, transparent); }
.wm-ref-scroll { max-height: 460px; overflow: auto; border: 1px solid var(--border); border-radius: 10px; }
.wm-ref-filter { margin-bottom: 12px; max-width: 320px; }
/* 速查表里的分类标题行（Linux 命令 / Android 按键码等长表分组） */
.wm-ref-table tr.wm-ref-group td {
    background: var(--bg);
    font-weight: 600;
    letter-spacing: 0.02em;
    border-top: 1px solid var(--border-strong);
    border-bottom: 1px solid var(--border);
    font-size: 13px;
}
.wm-ref-table tr.wm-ref-group:hover td { background: var(--bg); }
.wm-ref-table tr.wm-ref-group .wm-note { font-weight: 400; }
.wm-count-line { font-size: 12.5px; color: var(--text-muted); align-self: center; }
/* 网页源码查看：轻量语法着色（标签 / 标签名 / 属性 / 值 / 注释） */
.sh-pre { white-space: pre; tab-size: 4; }
.sh-t { color: #6b7280; }
.sh-n { color: #1d4ed8; font-weight: 600; }
.sh-a { color: #b45309; }
.sh-v { color: #0f766e; }
.sh-c { color: #9ca3af; font-style: italic; }
/* 注意：本项目的深色模式是 [data-theme="dark"] 属性驱动（见 app.js），
   不是 prefers-color-scheme 媒体查询，两者不要混用 */
[data-theme="dark"] .sh-t { color: #9ca3af; }
[data-theme="dark"] .sh-n { color: #93c5fd; }
[data-theme="dark"] .sh-a { color: #fbbf24; }
[data-theme="dark"] .sh-v { color: #5eead4; }
[data-theme="dark"] .sh-c { color: #6b7280; }

/* ===== 特殊符号大全（/user/tool_symbols.php） ===== */
.sym-toolbar { display: flex; flex-wrap: wrap; gap: 8px; align-items: center; margin-bottom: 12px; }
.sym-search {
    flex: 1 1 220px;
    min-width: 180px;
    height: 36px;
    padding: 0 12px;
    border: 1px solid var(--border);
    border-radius: 8px;
    background: var(--surface);
    color: var(--text);
    font-size: 13.5px;
    font-family: inherit;
}
.sym-search:focus { outline: none; border-color: var(--text); }
.sym-chips { display: flex; flex-wrap: wrap; gap: 6px; margin-bottom: 16px; }
.sym-chip {
    padding: 4px 11px;
    font-size: 12.5px;
    border: 1px solid var(--border);
    border-radius: 14px;
    background: var(--surface);
    color: var(--text-muted);
    cursor: pointer;
    transition: all 0.15s ease;
}
.sym-chip:hover { border-color: var(--border-strong); color: var(--text); }
.sym-group { margin-top: 22px; }
.sym-group > h2 { font-size: 14px; margin: 0 0 10px; display: flex; align-items: baseline; gap: 8px; }
.sym-count { font-weight: 400; font-size: 12.5px; color: var(--text-muted); }
.sym-grid { display: flex; flex-wrap: wrap; gap: 4px; }
.sym-cell {
    min-width: 40px;
    height: 40px;
    padding: 0 8px;
    display: inline-flex;
    align-items: center;
    justify-content: center;
    font-size: 20px;
    line-height: 1;
    border: 1px solid var(--border);
    border-radius: 8px;
    background: var(--surface);
    color: var(--text);
    cursor: pointer;
    transition: border-color .12s ease, background .12s ease, transform .12s ease;
}
.sym-cell:hover { border-color: var(--info); background: var(--info-bg); transform: translateY(-1px); }
.sym-cell.copied { border-color: var(--success); background: var(--success-bg); }
.sym-empty { color: var(--text-muted); font-size: 13px; padding: 8px 0; }
.sym-bag { white-space: pre-wrap; word-break: break-all; }

/* ===== 文字翻转与文本变形（/user/tool_textflip.php） ===== */
.fl-cat { font-size: 12.5px; font-weight: 600; color: var(--text-muted); margin: 14px 0 8px; letter-spacing: .02em; }
.fl-cat:first-of-type { margin-top: 4px; }
.fl-ops { display: flex; flex-wrap: wrap; gap: 6px; }
.fl-op {
    padding: 6px 12px;
    font-size: 12.5px;
    font-family: inherit;
    border: 1px solid var(--border);
    border-radius: 8px;
    background: var(--surface);
    color: var(--text);
    cursor: pointer;
    transition: all .15s ease;
}
.fl-op:hover { border-color: var(--info); background: var(--info-bg); color: var(--info); }
.fl-op:active { transform: translateY(1px); }

.wm-subtabs { display: flex; gap: 8px; flex-wrap: wrap; margin-bottom: 16px; }
.wm-subtab {
    padding: 7px 16px;
    font-size: 13px;
    border: 1px solid var(--border);
    border-radius: 18px;
    background: var(--surface);
    color: var(--text-muted);
    cursor: pointer;
    transition: all 0.15s ease;
}
.wm-subtab:hover { border-color: var(--border-strong); color: var(--text); }
.wm-subtab.active { background: var(--primary); color: var(--primary-fg); border-color: var(--primary); font-weight: 600; }
.wm-pane { display: none; }
.wm-pane.active { display: block; }

/* ============================================================
   V14 网址导航模块（.nav-*）
   颜色档位：tier1 普通显示 / tier2 蓝色套框 / tier3 红色加粗
   ============================================================ */
.nav-hero { text-align: center; padding: 40px 16px 8px; }
.nav-hero h2 { margin: 0 0 14px; font-size: 26px; letter-spacing: 1px; }
.nav-search { display: flex; max-width: 620px; margin: 0 auto; gap: 10px; }
.nav-search input { flex: 1; padding: 12px 16px; border: 1px solid var(--border); border-radius: 999px; font-size: 15px; background: var(--surface); color: var(--text); }
.nav-search button { padding: 12px 28px; border: none; border-radius: 999px; background: var(--primary); color: var(--primary-fg); font-size: 15px; cursor: pointer; }
.nav-search button:hover { opacity: .88; }
.nav-cats { display: grid; grid-template-columns: repeat(auto-fill, minmax(150px, 1fr)); gap: 10px; margin-top: 22px; }
.nav-cat-card { display: flex; justify-content: space-between; align-items: center; padding: 12px 14px; background: var(--surface); border: 1px solid var(--border); border-radius: var(--radius); color: var(--text); text-decoration: none; transition: border-color .15s, transform .15s; }
.nav-cat-card:hover { border-color: var(--border-strong); transform: translateY(-1px); }
.nav-cat-card .cnt { color: var(--text-light); font-size: 12px; }
.nav-section { margin-top: 26px; }
.nav-section-title { display: flex; align-items: baseline; gap: 10px; margin: 0 0 12px; font-size: 16px; }
.nav-section-title small { color: var(--text-light); font-weight: 400; font-size: 12px; }
.nav-grid { display: grid; grid-template-columns: repeat(auto-fill, minmax(210px, 1fr)); gap: 10px; }
.nav-item { display: flex; flex-direction: column; gap: 3px; padding: 11px 13px; background: var(--surface); border: 1px solid var(--border); border-radius: var(--radius); text-decoration: none; transition: border-color .15s; }
.nav-item:hover { border-color: var(--border-strong); }
.nav-item .t { font-weight: 600; font-size: 14px; color: var(--text); overflow: hidden; text-overflow: ellipsis; white-space: nowrap; }
.nav-item .d { color: var(--text-muted); font-size: 12px; overflow: hidden; text-overflow: ellipsis; white-space: nowrap; }
.nav-item .m { color: var(--text-light); font-size: 11px; }
.nav-item.tier-1 { border-left: 3px solid var(--border-strong); }
.nav-item.tier-2 { border: 1px solid var(--info); border-left-width: 3px; background: var(--info-bg); }
.nav-item.tier-2 .t { color: var(--info); }
.nav-item.tier-3 { border: 2px solid var(--danger); background: var(--danger-bg); }
.nav-item.tier-3 .t { color: var(--danger); font-weight: 800; }
.nav-item.pinned { border-color: var(--warn); background: var(--warn-bg); }
.nav-item.pinned .t::after { content: "顶"; margin-left: 6px; font-size: 10px; color: var(--warn-bg); background: var(--warn); border-radius: 3px; padding: 1px 4px; vertical-align: 1px; }
.nav-legend { display: flex; gap: 16px; flex-wrap: wrap; color: var(--text-light); font-size: 12px; margin-top: 10px; }
.nav-legend i { display: inline-block; width: 12px; height: 12px; border-radius: 3px; border: 1px solid var(--border); vertical-align: -1px; margin-right: 4px; }
.nav-legend .l1 i { border-left: 3px solid var(--border-strong); }
.nav-legend .l2 i { border-color: var(--info); background: var(--info-bg); }
.nav-legend .l3 i { border: 2px solid var(--danger); background: var(--danger-bg); }
.nav-report-link { color: var(--text-light); font-size: 11px; text-decoration: underline; cursor: pointer; background: none; border: none; padding: 0; }
.nav-modal { position: fixed; inset: 0; background: rgba(0,0,0,.45); display: none; align-items: center; justify-content: center; z-index: 90; }
.nav-modal.open { display: flex; }
.nav-modal-box { background: var(--surface); border-radius: var(--radius); padding: 22px; width: min(440px, 92vw); max-height: 86vh; overflow: auto; }
.nav-modal-box h3 { margin: 0 0 12px; font-size: 16px; }
.nav-modal-box label { display: block; font-size: 13px; margin: 10px 0 4px; color: var(--text-muted); }
.nav-modal-box select, .nav-modal-box input, .nav-modal-box textarea { width: 100%; padding: 9px 11px; border: 1px solid var(--border); border-radius: 6px; background: var(--surface); color: var(--text); font-size: 14px; box-sizing: border-box; }

/* ============================================================
   V17 浏览器插件推荐与分享（.plug-*）
   v17.2 视觉升级：插件页专属强调色（蓝紫点缀），浅 / 深色双适配
   ============================================================ */
:root {
    --plug-accent: #2563eb;
    --plug-accent-strong: #1d4ed8;
    --plug-accent-soft: #eff6ff;
    --plug-accent-ring: rgba(37, 99, 235, 0.16);
}
[data-theme="dark"] {
    --plug-accent: #60a5fa;
    --plug-accent-strong: #93c5fd;
    --plug-accent-soft: rgba(96, 165, 250, 0.13);
    --plug-accent-ring: rgba(96, 165, 250, 0.22);
}

/* 顶栏当前页签高亮（plug_topbar 输出的 .btn-ghost.active） */
.topbar .btn-ghost.active { color: var(--plug-accent-strong); border-color: var(--plug-accent); background: var(--plug-accent-soft); }

/* ---- 首屏 Hero ---- */
.plug-hero {
    position: relative;
    overflow: hidden;
    margin-top: 18px;
    padding: 42px 24px 34px;
    text-align: center;
    background:
        radial-gradient(640px 220px at 12% -10%, rgba(37, 99, 235, 0.10), transparent 62%),
        radial-gradient(560px 220px at 88% 0%, rgba(124, 58, 237, 0.09), transparent 60%),
        var(--surface);
    border: 1px solid var(--border);
    border-radius: 18px;
}
.plug-hero-badge {
    display: inline-flex; align-items: center; gap: 6px;
    padding: 5px 14px; margin-bottom: 14px;
    background: var(--plug-accent-soft); color: var(--plug-accent-strong);
    border-radius: 999px; font-size: 12px; font-weight: 600; letter-spacing: .04em;
}
.plug-hero h2 { margin: 0 0 12px; font-size: 30px; letter-spacing: -0.015em; }
.plug-hero p { color: var(--text-muted); margin: 0 auto; max-width: 640px; font-size: 14px; line-height: 1.8; }
.plug-search { display: flex; max-width: 620px; margin: 24px auto 0; gap: 10px; }
.plug-search input {
    flex: 1; padding: 13px 18px 13px 46px;
    border: 1px solid var(--border-strong); border-radius: 999px;
    font-size: 15px; color: var(--text); background-color: var(--surface);
    background-image: url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' width='18' height='18' viewBox='0 0 24 24' fill='none' stroke='%239ca3af' stroke-width='2.2' stroke-linecap='round'%3E%3Ccircle cx='11' cy='11' r='7'/%3E%3Cpath d='m20 20-3.5-3.5'/%3E%3C/svg%3E");
    background-repeat: no-repeat; background-position: 16px center;
    transition: border-color .15s, box-shadow .15s;
}
.plug-search input:focus { outline: none; border-color: var(--plug-accent); box-shadow: 0 0 0 4px var(--plug-accent-ring); }
.plug-search button {
    padding: 13px 30px; border: none; border-radius: 999px;
    font-size: 15px; font-weight: 600; cursor: pointer;
    background: var(--plug-accent); color: #fff;
    box-shadow: 0 6px 16px -6px rgba(37, 99, 235, 0.55);
    transition: background .15s, transform .15s;
}
.plug-search button:hover { background: var(--plug-accent-strong); transform: translateY(-1px); }
.plug-hotwords { display: flex; flex-wrap: wrap; justify-content: center; gap: 8px; margin-top: 16px; font-size: 12px; color: var(--text-light); align-items: center; }
.plug-hotwords a { color: var(--text-muted); text-decoration: none; padding: 3px 11px; border: 1px solid var(--border); border-radius: 999px; background: var(--bg); transition: color .15s, border-color .15s; }
.plug-hotwords a:hover { color: var(--plug-accent); border-color: var(--plug-accent); }

/* ---- 分类导航条（横向滚动） ---- */
.plug-catbar { display: flex; flex-wrap: wrap; gap: 8px; margin-top: 18px; border: 1px solid var(--border);padding: 8px 15px;border-radius: 20px; }
.plug-cat {
    display: inline-flex; align-items: center; gap: 6px; white-space: nowrap;
    padding: 8px 15px; border: 1px solid var(--border); border-radius: 999px;
    background: var(--surface); color: var(--text); font-size: 13px; text-decoration: none;
    transition: border-color .15s, background .15s, color .15s, transform .15s;
}
.plug-cat:hover { border-color: var(--plug-accent); color: var(--plug-accent-strong); transform: translateY(-1px); }
.plug-cat.active { border-color: var(--plug-accent); background: var(--plug-accent); color: #fff; }
.plug-cat .cnt { padding: 1px 7px; border-radius: 999px; font-size: 11px; background: var(--bg); color: var(--text-muted); }
.plug-cat.active .cnt { background: rgba(255, 255, 255, 0.24); color: #fff; }

/* ---- 区块与排序 ---- */
.plug-section { margin-top: 30px; }
.plug-section-head { display: flex; flex-wrap: wrap; gap: 12px; align-items: center; justify-content: space-between; }
.plug-section-title { display: flex; align-items: center; gap: 10px; margin: 0 0 14px; font-size: 17px; letter-spacing: -0.01em; }
.plug-section-head .plug-section-title { margin: 0; }
.plug-section-title::before { content: ""; flex: 0 0 4px; height: 17px; border-radius: 2px; background: linear-gradient(180deg, var(--plug-accent), #7c3aed); }
.plug-section-title small { color: var(--text-light); font-weight: 400; font-size: 12px; }
.plug-sortbar { display: flex; gap: 6px; flex-wrap: wrap; }
.plug-sort { padding: 6px 14px; border: 1px solid var(--border); border-radius: 999px; font-size: 12px; color: var(--text-muted); text-decoration: none; background: var(--surface); transition: color .15s, border-color .15s, background .15s; }
.plug-sort:hover { color: var(--plug-accent); border-color: var(--plug-accent); }
.plug-sort.active { border-color: var(--plug-accent); color: var(--plug-accent-strong); background: var(--plug-accent-soft); font-weight: 600; }

/* ---- 卡片网格 ---- */
.plug-grid { display: grid; grid-template-columns: repeat(auto-fill, minmax(292px, 1fr)); gap: 14px; }
.plug-featured .plug-card { background: linear-gradient(180deg, var(--plug-accent-soft), transparent 46%), var(--surface); }
.plug-empty { padding: 40px 24px; text-align: center; border-style: dashed; }
.plug-card {
    position: relative;
    display: flex; flex-direction: column; gap: 10px; padding: 18px 16px 14px;
    background: var(--surface); border: 1px solid var(--border); border-radius: 14px;
    box-shadow: var(--shadow-sm);
    transition: transform .18s ease, box-shadow .18s ease, border-color .18s ease;
}
.plug-card:hover { transform: translateY(-3px); border-color: var(--plug-accent); box-shadow: 0 12px 30px -12px rgba(17, 24, 39, 0.18); }
.plug-card-head { display: flex; gap: 12px; align-items: flex-start; }
.plug-icon {
    flex: 0 0 44px; height: 44px; border-radius: 12px; color: #fff; font-weight: 700; font-size: 14px;
    display: flex; align-items: center; justify-content: center; letter-spacing: .02em;
    box-shadow: inset 0 1px 0 rgba(255, 255, 255, 0.28), 0 5px 12px -6px rgba(17, 24, 39, 0.45);
}
.plug-icon-lg { flex-basis: 56px; height: 56px; border-radius: 15px; font-size: 17px; }
.plug-card-title { min-width: 0; }
.plug-name { display: block; font-weight: 700; font-size: 15px; color: var(--text); text-decoration: none; transition: color .15s; }
.plug-name:hover { color: var(--plug-accent-strong); }
.plug-meta { display: flex; flex-wrap: wrap; gap: 8px; align-items: center; margin-top: 4px; font-size: 12px; }
.plug-cat-tag { color: var(--plug-accent-strong); font-weight: 500; text-decoration: none; }
.plug-cat-tag:hover { text-decoration: underline; }
.plug-pick { background: linear-gradient(135deg, #f59e0b, #d97706); color: #fff; border-radius: 999px; padding: 2px 8px; font-size: 10px; font-weight: 600; letter-spacing: .03em; }
.plug-dev { color: var(--text-light); }
.plug-summary { margin: 0; color: var(--text-muted); font-size: 13px; line-height: 1.7; }
.plug-tags { display: flex; flex-wrap: wrap; gap: 6px; }
.plug-tag { padding: 3px 10px; border: 1px solid var(--border); border-radius: 999px; background: var(--bg); color: var(--text-muted); font-size: 11px; text-decoration: none; transition: color .15s, border-color .15s; }
.plug-tag:hover { color: var(--plug-accent); border-color: var(--plug-accent); }
.plug-tag-os { opacity: .75; border-style: dashed; }
.plug-card-foot { display: flex; align-items: center; justify-content: space-between; gap: 8px; margin-top: auto; padding-top: 12px; border-top: 1px solid var(--border); }
.plug-stat { display: flex; align-items: center; gap: 10px; font-size: 12px; color: var(--text-light); }
.plug-stat .plug-like {
    display: inline-flex; align-items: center; gap: 5px;
    padding: 4px 12px; border: 1px solid var(--border); border-radius: 999px;
    background: none; font-size: 12px; color: var(--text-muted); cursor: pointer;
    transition: color .15s, border-color .15s, background .15s;
}
.plug-stat .plug-like:hover { color: var(--danger); border-color: var(--danger); }
.plug-like .heart { font-size: 14px; display: inline-block; }
.plug-stat .plug-like.liked { color: var(--danger); border-color: var(--danger); background: var(--danger-bg); font-weight: 600; }
.plug-like.liked .heart { animation: plug-pop .35s ease; }
@keyframes plug-pop { 0% { transform: scale(.5); } 55% { transform: scale(1.3); } 100% { transform: scale(1); } }
.plug-views { display: inline-flex; align-items: center; gap: 4px; }
.plug-actions { display: flex; gap: 6px; align-items: center; }
.plug-cta {
    position: relative; overflow: hidden;
    display: flex; flex-wrap: wrap; gap: 14px; align-items: center; justify-content: space-between;
    margin-top: 32px; padding: 24px 26px; border: 1px solid var(--border); border-radius: 18px;
    background: linear-gradient(120deg, var(--plug-accent-soft), transparent 55%), var(--surface);
}
.plug-cta h3 { margin: 0; font-size: 17px; }
.plug-cta-actions { display: flex; gap: 8px; flex-wrap: wrap; }
.plug-back { margin: 18px 0 0; font-size: 13px; }
.plug-back a { color: var(--text-muted); text-decoration: none; }
.plug-back a:hover { color: var(--plug-accent); }

/* ---- 详情页 ---- */
.plug-detail { display: grid; grid-template-columns: minmax(0, 1fr) 300px; gap: 20px; margin-top: 14px; align-items: start; }
.plug-detail-main { padding: 26px 26px 22px; background: var(--surface); border: 1px solid var(--border); border-radius: 18px; }
.plug-detail-side { position: sticky; top: 14px; display: flex; flex-direction: column; gap: 14px; }
.plug-detail-head { display: flex; gap: 16px; align-items: center; }
.plug-detail-title { margin: 0; font-size: 24px; letter-spacing: -0.015em; }
.plug-detail-meta { display: flex; flex-wrap: wrap; gap: 10px; align-items: center; margin-top: 8px; font-size: 12px; }
.plug-detail-summary { margin: 18px 0 0; font-size: 15px; line-height: 1.8; }
.plug-detail-block { margin-top: 24px; padding-top: 18px; border-top: 1px solid var(--border); }
.plug-detail-block h3 { display: flex; align-items: center; gap: 8px; margin: 0 0 10px; font-size: 14px; }
.plug-detail-block h3::before { content: ""; flex: 0 0 4px; height: 14px; border-radius: 2px; background: var(--plug-accent); }
.plug-detail-desc { font-size: 14px; line-height: 1.85; color: var(--text-muted); }
.plug-note { margin: 0; padding-left: 18px; font-size: 13px; line-height: 2; color: var(--text-muted); }
.plug-side-card { padding: 18px; border-radius: 14px; }
.plug-side-stat { display: flex; gap: 22px; margin-bottom: 14px; }
.plug-side-stat strong { display: block; font-size: 24px; letter-spacing: -0.02em; }
.plug-side-stat span { color: var(--text-light); font-size: 11px; }
.plug-like-btn { width: 100%; margin-bottom: 8px; background: var(--surface); border: 1px solid var(--plug-accent); color: var(--plug-accent-strong); transition: background .15s, color .15s, border-color .15s; }
.plug-like-btn:hover { background: var(--plug-accent-soft); }
.plug-like-btn.liked { background: var(--danger-bg); border-color: var(--danger); color: var(--danger); }
.plug-detail .plug-install { width: 100%; margin-bottom: 8px; background: var(--plug-accent); border-color: var(--plug-accent); box-shadow: 0 8px 18px -8px rgba(37, 99, 235, 0.6); }
.plug-detail .plug-install:hover { background: var(--plug-accent-strong); border-color: var(--plug-accent-strong); }
.plug-share-actions { display: flex; gap: 8px; flex-wrap: wrap; }
.plug-share-qr { box-sizing: border-box; width: 120px; height: 120px; margin-top: 12px; padding: 6px; border: 1px solid var(--border); border-radius: 12px; background: #fff; }
.plug-facts { list-style: none; margin: 0; padding: 0; font-size: 12px; }
.plug-facts li { display: flex; justify-content: space-between; gap: 10px; padding: 8px 0; border-bottom: 1px dashed var(--border); }
.plug-facts li:last-child { border-bottom: none; }
.plug-facts span { color: var(--text-light); }
.plug-facts em { font-style: normal; color: var(--text); font-weight: 500; }

/* 深色模式微调 */
[data-theme="dark"] .plug-card { box-shadow: 0 1px 3px rgba(0, 0, 0, 0.4); }
[data-theme="dark"] .plug-card:hover { box-shadow: 0 12px 30px -12px rgba(0, 0, 0, 0.65); }
/* 深色下强调色变浅，蓝底白字对比度不足 → 改为深色文字 */
[data-theme="dark"] .plug-cat.active,
[data-theme="dark"] .plug-search button,
[data-theme="dark"] .plug-detail .plug-install { color: #0f1115; }
[data-theme="dark"] .plug-cat.active .cnt { background: rgba(15, 17, 21, 0.16); color: #0f1115; }

/* 响应式 */
@media (max-width: 900px) { .plug-detail { grid-template-columns: 1fr; } .plug-detail-side { position: static; } }
@media (max-width: 640px) {
    .plug-hero { padding: 30px 16px 26px; border-radius: 14px; }
    .plug-hero h2 { font-size: 22px; }
    .plug-search { flex-direction: column; }
    .plug-search button { padding: 12px; }
    .plug-grid { grid-template-columns: 1fr; }
    .plug-cta { padding: 20px 16px; }
}

/* 网页版小工具通用块（原插件页工具迁入站长工具 / 工具箱后复用） */
.wt-row { display: flex; gap: 8px; flex-wrap: wrap; margin-top: 12px; align-items: center; }
.wt-out { margin-top: 12px; padding: 12px; border: 1px dashed var(--border-strong); border-radius: 6px; font-size: 13px; white-space: pre-wrap; word-break: break-all; color: var(--text); min-height: 20px; }
.wt-out.ok { border-color: #16a34a; }
.wt-out.err { border-color: var(--danger); color: var(--danger); }
.wt-out img { max-width: 260px; width: 100%; height: auto; display: block; }
.wt-chip { display: inline-flex; align-items: center; gap: 6px; font-size: 12px; color: var(--text-muted); margin-right: 12px; }
.wt-chip input { vertical-align: -2px; }
.wt-swatches { display: flex; gap: 8px; margin-top: 10px; flex-wrap: wrap; }
.wt-sw { width: 44px; height: 44px; border-radius: 8px; border: 1px solid var(--border-strong); cursor: pointer; }
.wt-video { max-width: 100%; max-height: 380px; border-radius: 6px; background: #000; }
#wt-ruler-overlay { position: fixed; inset: 0; z-index: 9999; pointer-events: none; display: none; }