:root {
    --apple-bg: #f5f5f7;
    --card-bg: #fff;
    --text-primary: #111827;
    --text-secondary: #4b5563;
    --text-muted: #6b7280;
    --border-color: #e5e7eb;
    --glass-bg: rgba(255, 255, 255, 0.72);
    --input-bg: rgba(229, 231, 235, 0.5);
    --skeleton-bg: #e5e7eb;
}
[data-theme="dark"] {
    --apple-bg: #111827;
    --card-bg: #1f2937;
    --text-primary: #f9fafb;
    --text-secondary: #e5e7eb;
    --text-muted: #b0b8c0;
    --border-color: #374151;
    --glass-bg: rgba(31, 41, 55, 0.85);
    --input-bg: rgba(55, 65, 81, 0.6);
    --skeleton-bg: #374151;
}
html { transition: background-color 0.3s ease, color 0.3s ease; }
body { background-color: var(--apple-bg); color: var(--text-primary); font-family: -apple-system, "SF Pro SC", "SF Pro Display", "Helvetica Neue", Arial, sans-serif; transition: background-color 0.3s ease, color 0.3s ease; }

/* 主题切换过渡：关键元素 */
nav, main, .glass, #themeToggle, #searchInput, #searchBtn, button, a { transition: background-color 0.3s ease, color 0.3s ease, border-color 0.3s ease; }

/* 毛玻璃效果 */
.glass { background: var(--glass-bg); backdrop-filter: saturate(180%) blur(20px); }

/* 搜索高亮样式 */
mark { background: rgba(255, 213, 0, 0.4); color: inherit; border-radius: 2px; padding: 0 2px; }

/* 屏幕阅读器专用文本与跳过链接显示 */
.sr-only {
    position: absolute;
    width: 1px;
    height: 1px;
    padding: 0;
    margin: -1px;
    overflow: hidden;
    clip: rect(0, 0, 0, 0);
    white-space: nowrap;
    border: 0;
    left: -9999px;
}
.sr-only:focus,
.sr-only:focus-visible {
    position: fixed;
    left: 1rem;
    top: 1rem;
    width: auto;
    height: auto;
    margin: 0;
    padding: 0.5rem 1rem;
    overflow: visible;
    clip: auto;
    white-space: normal;
    background-color: #111827;
    color: #ffffff;
    border-radius: 9999px;
    z-index: 1000;
}

/* 全局焦点可见样式，确保键盘导航有清晰指示 */
:focus-visible {
    outline: 2px solid #2563EB;
    outline-offset: 2px;
}

/* 图片预览大图层（div） */
#lightbox {
    background-color: rgba(0, 0, 0, 0.8);
    z-index: 100;
    display: flex;
    align-items: center;
    justify-content: center;
    cursor: pointer;
    pointer-events: auto;
}
#lightbox.hidden {
    display: none !important;
}
#lightbox:not(.hidden) {
    display: flex !important;
}
#lightbox > .modal-content {
    position: relative;
    display: flex;
    align-items: center;
    justify-content: center;
    pointer-events: auto;
}
.lightbox-spinner {
    position: absolute;
    inset: 0;
    display: flex;
    align-items: center;
    justify-content: center;
    pointer-events: none;
}
.lightbox-spinner::after {
    content: '';
    width: 40px;
    height: 40px;
    border: 3px solid rgba(255, 255, 255, 0.3);
    border-top-color: #fff;
    border-radius: 50%;
    animation: lightbox-spin 0.8s linear infinite;
}
.lightbox-spinner.hidden {
    display: none;
}
@keyframes lightbox-spin {
    to { transform: rotate(360deg); }
}
.close-btn {
    position: absolute;
    top: 0.5rem;
    right: 0.5rem;
    z-index: 10;
    min-width: 44px;
    min-height: 44px;
    padding: 0;
    display: flex;
    align-items: center;
    justify-content: center;
    border: none;
    border-radius: 50%;
    background: rgba(0, 0, 0, 0.5);
    color: #fff;
    cursor: pointer;
    transition: background 0.2s ease, color 0.2s ease;
}
.close-btn:hover,
.close-btn:focus-visible {
    background: rgba(0, 0, 0, 0.75);
    color: #fff;
}

/* 隐藏滚动条但保持功能 */
.no-scrollbar::-webkit-scrollbar { display: none; }
.no-scrollbar { -ms-overflow-style: none; scrollbar-width: none; }

/* 卡片阴影与边框 */
.qa-card {
    box-shadow: 0 1px 3px rgba(0,0,0,0.1);
    border: 1px solid var(--border-color);
    background-color: var(--card-bg);
    transition: all 0.2s ease;
}
[data-theme="dark"] .qa-card {
    background-color: #1f2937 !important;
}
.qa-card:hover {
    box-shadow: 0 2px 8px rgba(0,0,0,0.08);
}

/* 列表双列（仅桌面，默认单列） */
@media (min-width: 1024px) {
    #qa-container.layout-double {
        grid-template-columns: repeat(2, 1fr);
        max-width: 100%;
    }
}

/* 正文可读性 */
.qa-content {
    line-height: 1.6;
}

/* 搜索框：48px 触控区、placeholder、移动端 */
#searchInput,
.search-input {
    min-height: 48px;
    padding-top: 12px;
    padding-bottom: 12px;
    transition: background-color 0.2s ease, box-shadow 0.2s ease;
}
#searchInput:focus,
.search-input:focus {
    background-color: #fff;
    box-shadow: 0 4px 12px rgba(0,0,0,0.08);
}
.search-input::placeholder {
    color: #d1d5db;
}
[data-theme="dark"] .search-input::placeholder {
    color: #9ca3af;
}
@media (max-width: 640px) {
    .search-input {
        width: 100%;
        font-size: 16px;
    }
}

/* 卡片 hover 放大与指针 */
.qa-card {
    cursor: pointer;
    transform-origin: center;
}
.qa-card:hover {
    transform: scale(1.01);
    box-shadow: 0 4px 12px rgba(0,0,0,0.1);
}

/* 复制按钮图标/文字切换 */
.copy-icon.hidden, .copy-done.hidden { display: none; }

/* Toast */
#copyToast.show { opacity: 1; }

/* 骨架屏 */
.skeleton-card { min-height: 200px; }
.skeleton { background-color: var(--skeleton-bg); border-radius: 0.5rem; }
.skeleton-line { height: 1rem; }
.skeleton-title { height: 1.25rem; }
@keyframes skeleton-pulse { 0%, 100% { opacity: 1; } 50% { opacity: 0.6; } }
.animate-skeleton { animation: skeleton-pulse 1.5s ease-in-out infinite; }
.qa-card.fade-in { animation: fadeIn 0.3s ease-out; }
@keyframes fadeIn { from { opacity: 0; } to { opacity: 1; } }

[data-theme="dark"] body { color: var(--text-primary) !important; }
[data-theme="dark"] nav { border-color: var(--border-color); }
[data-theme="dark"] nav h2 { color: var(--text-primary); }
[data-theme="dark"] nav #stats { color: var(--text-secondary); }
[data-theme="dark"] nav .text-gray-500 { color: var(--text-muted); }
[data-theme="dark"] :focus-visible {
    outline: 2px solid #60A5FA;
    outline-offset: 2px;
}
[data-theme="dark"] #themeToggle {
    color: #93c5fd;
    background-color: rgba(59, 130, 246, 0.1);
}
[data-theme="dark"] #themeToggle:hover {
    background-color: rgba(59, 130, 246, 0.2);
    color: #bfdbfe;
}
[data-theme="dark"] .theme-icon-light { display: none; }
[data-theme="dark"] .theme-icon-dark { display: inline !important; }
[data-theme="dark"] [aria-label="面包屑"] a { color: var(--text-secondary); }
[data-theme="dark"] [aria-label="面包屑"] .text-gray-400 { color: var(--text-muted); }
[data-theme="dark"] [aria-label="面包屑"] span[aria-current="page"] { color: var(--text-primary); }
[data-theme="dark"] #topProgress { color: var(--text-muted); }
[data-theme="dark"] #topProgress.text-gray-500 { color: var(--text-muted); }
[data-theme="dark"] main .text-gray-500 { color: var(--text-muted); }
[data-theme="dark"] #skeleton-wrap .text-gray-500 { color: var(--text-muted); }
[data-theme="dark"] .qa-title { color: var(--text-primary); }
[data-theme="dark"] .qa-content { color: var(--text-secondary); }
[data-theme="dark"] .qa-card .text-gray-600 { color: #e5e7eb !important; }
[data-theme="dark"] .qa-card .text-gray-500 { color: #d1d5db !important; }
[data-theme="dark"] .qa-card .text-gray-300 { color: #d1d5db !important; }
[data-theme="dark"] .qa-card p.text-xs,
[data-theme="dark"] .qa-card .text-sm { color: #d1d5db !important; }
[data-theme="dark"] .qa-card .border-gray-50 { border-color: var(--border-color); }
[data-theme="dark"] .qa-card time { color: #d1d5db !important; }
[data-theme="dark"] .qa-card button { background: var(--border-color); color: var(--text-secondary); }
[data-theme="dark"] .qa-card button:hover { background: #4b5563; color: var(--text-primary); }
[data-theme="dark"] .qa-card a[href][target="_blank"] { color: #60a5fa; }
[data-theme="dark"] .qa-card a[href][target="_blank"]:hover { color: #93c5fd; }
[data-theme="dark"] a.view-original {
    color: #60A5FA;
    text-decoration: underline;
}
[data-theme="dark"] a.view-original:hover {
    color: #93c5fd;
}
[data-theme="dark"] .skeleton-card { background: var(--card-bg); border-color: var(--border-color); }
[data-theme="dark"] #searchInput { background: var(--input-bg); color: var(--text-primary); }
[data-theme="dark"] #searchInput:focus { background: #374151; color: var(--text-primary); box-shadow: 0 0 0 2px rgba(96, 165, 250, 0.3); }
[data-theme="dark"] #searchBtn { color: #2563EB; }
[data-theme="dark"] #searchBtn:hover { color: #1d4ed8; }
[data-theme="dark"] #searchClear { color: var(--text-muted); }
[data-theme="dark"] #searchClear:hover { background: rgba(255,255,255,0.1); color: var(--text-primary); }
[data-theme="dark"] #searchLoading { color: var(--text-muted); }
[data-theme="dark"] .search-spinner { border-color: #374151; border-top-color: #60a5fa; }
.empty-state { margin-top: 60px; background: #f3f4f6; }
[data-theme="dark"] .empty-state { background: var(--card-bg); }
[data-theme="dark"] #searchEmptyState .text-gray-300 { color: var(--text-muted); }
[data-theme="dark"] #searchEmptyState h3 { color: var(--text-primary); }
[data-theme="dark"] #searchEmptyState p { color: var(--text-secondary); }
[data-theme="dark"] #backToTop { background: var(--card-bg); border-color: var(--border-color); color: var(--text-secondary); }
[data-theme="dark"] #backToTop:hover { color: #60a5fa; }

/* 搜索 loading spinner */
.search-spinner { width: 1rem; height: 1rem; border: 2px solid #e5e7eb; border-top-color: #2563eb; border-radius: 50%; animation: search-spin 0.7s linear infinite; flex-shrink: 0; }
@keyframes search-spin { to { transform: rotate(360deg); } }

/* 主题切换淡出/淡入（可选） */
.theme-transition-out { opacity: 0; transition: opacity 0.1s ease; }
.theme-transition-in { opacity: 1; transition: opacity 0.2s ease; }

/* 搜索按钮：48px 触控区、移动端 padding */
.search-btn,
#searchBtn {
    min-height: 48px;
    min-width: 48px;
}
@media (max-width: 640px) {
    .search-btn {
        padding-left: 16px;
        padding-right: 16px;
    }
}

/* 语言切换按钮 */
.language-toggle {
    display: flex;
    gap: 2px;
    align-items: center;
}
.language-toggle [data-lang] {
    padding: 6px 10px;
    border: 1px solid var(--border-color);
    background: transparent;
    cursor: pointer;
    border-radius: 6px;
    font-size: 13px;
    font-weight: 500;
    color: var(--text-secondary);
    transition: background-color 0.2s ease, color 0.2s ease, border-color 0.2s ease;
}
.language-toggle [data-lang]:hover {
    background-color: rgba(37, 99, 235, 0.08);
    color: #2563EB;
}
.language-toggle [data-lang].active {
    background-color: #2563EB;
    color: white;
    border-color: #2563EB;
}
[data-theme="dark"] .language-toggle [data-lang].active {
    background-color: #3b82f6;
    border-color: #3b82f6;
}

/* 裁定标签样式 */
.ruling-badge {
    display: inline-block;
    padding: 2px 10px;
    border-radius: 9999px;
    font-size: 12px;
    font-weight: 600;
    line-height: 1.5;
}
.ruling-badge.ruling-allowed { background: #dcfce7; color: #15803d; }
.ruling-badge.ruling-not_allowed { background: #fee2e2; color: #b91c1c; }
.ruling-badge.ruling-conditional { background: #fef3c7; color: #b45309; }
.ruling-badge.ruling-clarification { background: #dbeafe; color: #1d4ed8; }
[data-theme="dark"] .ruling-badge.ruling-allowed { background: rgba(34,197,94,0.15); color: #4ade80; }
[data-theme="dark"] .ruling-badge.ruling-not_allowed { background: rgba(239,68,68,0.15); color: #f87171; }
[data-theme="dark"] .ruling-badge.ruling-conditional { background: rgba(245,158,11,0.15); color: #fbbf24; }
[data-theme="dark"] .ruling-badge.ruling-clarification { background: rgba(59,130,246,0.15); color: #60a5fa; }

/* 规则编号标签 */
.rule-tag {
    display: inline-block;
    padding: 1px 8px;
    border-radius: 6px;
    font-size: 12px;
    font-weight: 500;
    background: #f3f4f6;
    color: #4b5563;
    cursor: pointer;
    transition: background 0.15s, color 0.15s;
    border-bottom: 1.5px dashed rgba(37, 99, 235, 0.4);
    position: relative;
}
.rule-tag:hover { background: #dbeafe; color: #1d4ed8; border-bottom-color: #2563EB; }
[data-theme="dark"] .rule-tag { background: #374151; color: #d1d5db; border-bottom-color: rgba(96, 165, 250, 0.3); }
[data-theme="dark"] .rule-tag:hover { background: rgba(59,130,246,0.2); color: #93c5fd; border-bottom-color: #60a5fa; }

/* 规则标签 hover tooltip */
.rule-tag[data-tooltip]::after {
    content: attr(data-tooltip);
    position: absolute;
    bottom: calc(100% + 6px);
    left: 50%;
    transform: translateX(-50%);
    padding: 5px 10px;
    border-radius: 6px;
    font-size: 11px;
    font-weight: 400;
    line-height: 1.4;
    white-space: nowrap;
    max-width: 240px;
    overflow: hidden;
    text-overflow: ellipsis;
    background: #1f2937;
    color: #f9fafb;
    box-shadow: 0 2px 8px rgba(0,0,0,0.15);
    opacity: 0;
    pointer-events: none;
    transition: opacity 0.15s ease;
    z-index: 50;
}
.rule-tag[data-tooltip]::before {
    content: '';
    position: absolute;
    bottom: calc(100% + 2px);
    left: 50%;
    transform: translateX(-50%);
    border: 4px solid transparent;
    border-top-color: #1f2937;
    opacity: 0;
    pointer-events: none;
    transition: opacity 0.15s ease;
    z-index: 50;
}
@media (hover: hover) {
    .rule-tag[data-tooltip]:hover::after,
    .rule-tag[data-tooltip]:hover::before {
        opacity: 1;
    }
}
[data-theme="dark"] .rule-tag[data-tooltip]::after {
    background: #e5e7eb;
    color: #111827;
}
[data-theme="dark"] .rule-tag[data-tooltip]::before {
    border-top-color: #e5e7eb;
}

/* AI 总结区块 - 左侧蓝色边框 */
.qa-ai-summary {
    border-left: 3px solid #3b82f6;
    background: #f8fafc;
    border-radius: 0 8px 8px 0;
    padding: 12px 16px;
    margin-bottom: 16px;
}
.qa-ai-summary .section-label {
    font-size: 13px;
    font-weight: 600;
    color: #3b82f6;
    margin-bottom: 6px;
}
.qa-ai-summary .conclusion-text {
    font-size: 14px;
    color: #374151;
    line-height: 1.5;
    margin: 0;
}
[data-theme="dark"] .qa-ai-summary {
    background: rgba(59, 130, 246, 0.06);
    border-left-color: #3b82f6;
}
[data-theme="dark"] .qa-ai-summary .section-label { color: #60a5fa; }
[data-theme="dark"] .qa-ai-summary .conclusion-text { color: #d1d5db; }

/* 卡片标题 - 官方论坛风格 */
.qa-title-header {
    font-size: 1.4rem;
    font-weight: 700;
    color: #1a4d8c;
    line-height: 1.35;
    margin: 0;
    transition: color 0.15s;
}
.group:hover .qa-title-header { color: #1d4ed8; }
[data-theme="dark"] .qa-title-header { color: #93c5fd; }
[data-theme="dark"] .group:hover .qa-title-header { color: #bfdbfe; }

/* 虚线分隔 */
.qa-separator {
    border: none;
    border-top: 2px dotted #d1d5db;
    margin: 12px 0 14px;
}
[data-theme="dark"] .qa-separator { border-top-color: #4b5563; }

/* 元信息行 */
.qa-meta-row {
    display: flex;
    justify-content: space-between;
    align-items: center;
    margin-bottom: 16px;
}
.qa-meta-date {
    display: flex;
    align-items: center;
    gap: 5px;
    font-size: 14px;
    color: #6b7280;
}
[data-theme="dark"] .qa-meta-date { color: #9ca3af; }

/* 提问内容 - 纯文本无背景 */
.qa-question-text {
    margin-bottom: 16px;
}

/* 官方回答 - 绿色边框盒子 */
.qa-answer-box {
    border: 2.5px solid #22c55e;
    border-radius: 8px;
    padding: 20px 24px;
    margin-top: 4px;
}
.qa-answer-box-header {
    display: flex;
    justify-content: space-between;
    align-items: center;
    margin-bottom: 14px;
}
.qa-answer-badge {
    font-size: 1.15rem;
    font-weight: 600;
    color: #16a34a;
}
.qa-answer-date {
    display: flex;
    align-items: center;
    gap: 5px;
    font-size: 13px;
    color: #6b7280;
}
[data-theme="dark"] .qa-answer-box {
    border-color: #22c55e;
    background: rgba(34, 197, 94, 0.04);
}
[data-theme="dark"] .qa-answer-badge { color: #4ade80; }
[data-theme="dark"] .qa-answer-date { color: #9ca3af; }

/* 卡片底部 */
.qa-card-footer {
    margin-top: 20px;
    padding-top: 16px;
    border-top: 1px solid var(--border-color);
    display: flex;
    justify-content: space-between;
    align-items: center;
}

/* 规则标签行 */
.qa-rules-row {
    display: flex;
    flex-wrap: wrap;
    gap: 6px;
    margin-bottom: 12px;
}

/* 筛选栏按钮 */
.filter-btn {
    display: inline-flex;
    align-items: center;
    gap: 4px;
    padding: 4px 12px;
    border-radius: 9999px;
    font-size: 13px;
    font-weight: 500;
    border: 1px solid var(--border-color);
    background: transparent;
    color: var(--text-secondary);
    cursor: pointer;
    transition: all 0.15s;
}
.filter-btn:hover { background: rgba(37,99,235,0.06); border-color: #2563EB; color: #2563EB; }
.filter-btn.active { background: #2563EB; color: white; border-color: #2563EB; }
[data-theme="dark"] .filter-btn.active { background: #3b82f6; border-color: #3b82f6; }
.filter-btn .filter-count {
    font-size: 11px;
    opacity: 0.7;
}
/* 规则分组 */
.rule-group-label {
    font-size: 11px;
    font-weight: 600;
    color: var(--text-muted);
    min-width: 28px;
    text-align: center;
    padding: 2px 0;
    user-select: none;
    letter-spacing: 0.5px;
}
/* 规则展开/收起按钮 */
.rule-toggle-btn {
    border-style: dashed;
    color: var(--text-muted);
    font-size: 12px;
    align-self: flex-start;
    margin-top: 2px;
}
.rule-toggle-btn:hover {
    border-style: solid;
}

/* 全面屏安全区域 */
body {
    padding-left: env(safe-area-inset-left);
    padding-right: env(safe-area-inset-right);
}
#backToTop {
    bottom: calc(1.5rem + env(safe-area-inset-bottom));
}
#copyToast {
    bottom: calc(1.5rem + env(safe-area-inset-bottom));
}

/* 触摸反馈：按下时轻微缩小 */
@media (hover: none) and (pointer: coarse) {
    .qa-card:active {
        transform: scale(0.98) !important;
        transition: transform 0.1s ease !important;
    }
    .filter-btn:active,
    .language-toggle [data-lang]:active,
    .rule-tag:active {
        transform: scale(0.93);
        transition: transform 0.1s ease;
    }
    /* 手机端取消 hover 放大效果，避免黏滞 */
    .qa-card:hover {
        transform: none;
    }
}

/* 规则气泡卡片 */
.rule-popover {
    position: absolute;
    z-index: 60;
    width: 320px;
    max-width: calc(100vw - 24px);
    background: rgba(255, 255, 255, 0.92);
    backdrop-filter: saturate(180%) blur(20px);
    border: 1px solid var(--border-color);
    border-radius: 14px;
    box-shadow: 0 8px 32px rgba(0, 0, 0, 0.12), 0 2px 8px rgba(0, 0, 0, 0.06);
    padding: 16px;
    animation: popoverIn 0.18s ease-out;
}
@keyframes popoverIn {
    from { opacity: 0; transform: translateY(6px) scale(0.97); }
    to   { opacity: 1; transform: translateY(0) scale(1); }
}
.rule-popover.hidden { display: none; }
.rule-popover-header {
    display: flex;
    justify-content: space-between;
    align-items: center;
    margin-bottom: 8px;
}
.rule-popover-header .rule-code {
    font-size: 15px;
    font-weight: 700;
    color: #2563EB;
}
.rule-popover-close {
    width: 28px;
    height: 28px;
    display: flex;
    align-items: center;
    justify-content: center;
    border: none;
    background: rgba(0,0,0,0.06);
    border-radius: 50%;
    color: #6b7280;
    cursor: pointer;
    font-size: 16px;
    line-height: 1;
    transition: background 0.15s, color 0.15s;
}
.rule-popover-close:hover { background: rgba(0,0,0,0.12); color: #111827; }
.rule-popover-title {
    font-size: 14px;
    font-weight: 600;
    color: var(--text-primary);
    margin: 0 0 6px;
    line-height: 1.4;
}
.rule-popover-summary {
    font-size: 13px;
    color: var(--text-secondary);
    line-height: 1.5;
    margin: 0 0 12px;
}
.rule-popover-actions {
    display: flex;
    gap: 8px;
    flex-wrap: wrap;
}
.rule-popover-actions a,
.rule-popover-actions button {
    display: inline-flex;
    align-items: center;
    gap: 4px;
    padding: 5px 12px;
    border-radius: 8px;
    font-size: 12px;
    font-weight: 500;
    text-decoration: none;
    cursor: pointer;
    transition: background 0.15s, color 0.15s;
    border: 1px solid var(--border-color);
    background: transparent;
    color: var(--text-secondary);
}
.rule-popover-actions a:hover,
.rule-popover-actions button:hover {
    background: rgba(37,99,235,0.08);
    color: #2563EB;
    border-color: #2563EB;
}
.rule-popover-actions a.primary-action {
    background: #2563EB;
    color: white;
    border-color: #2563EB;
}
.rule-popover-actions a.primary-action:hover {
    background: #1d4ed8;
}
.rule-popover-not-found {
    font-size: 13px;
    color: var(--text-muted);
    font-style: italic;
    margin: 0 0 12px;
}
/* 暗色模式 */
[data-theme="dark"] .rule-popover {
    background: rgba(31, 41, 55, 0.92);
    border-color: #374151;
    box-shadow: 0 8px 32px rgba(0, 0, 0, 0.4), 0 2px 8px rgba(0, 0, 0, 0.2);
}
[data-theme="dark"] .rule-popover-header .rule-code { color: #60a5fa; }
[data-theme="dark"] .rule-popover-close { background: rgba(255,255,255,0.08); color: #9ca3af; }
[data-theme="dark"] .rule-popover-close:hover { background: rgba(255,255,255,0.15); color: #f9fafb; }
[data-theme="dark"] .rule-popover-actions a,
[data-theme="dark"] .rule-popover-actions button {
    border-color: #4b5563;
    color: #d1d5db;
}
[data-theme="dark"] .rule-popover-actions a:hover,
[data-theme="dark"] .rule-popover-actions button:hover {
    background: rgba(96,165,250,0.12);
    color: #60a5fa;
    border-color: #60a5fa;
}
[data-theme="dark"] .rule-popover-actions a.primary-action {
    background: #3b82f6;
    color: white;
    border-color: #3b82f6;
}
[data-theme="dark"] .rule-popover-actions a.primary-action:hover {
    background: #2563EB;
}
/* 手机端气泡 — 底部弹出 */
@media (max-width: 640px) {
    .rule-popover {
        position: fixed !important;
        bottom: 0 !important;
        left: 0 !important;
        top: auto !important;
        right: 0 !important;
        width: 100% !important;
        max-width: 100% !important;
        border-radius: 14px 14px 0 0;
        padding: 20px 16px calc(16px + env(safe-area-inset-bottom));
        animation: popoverSlideUp 0.25s ease-out;
    }
    @keyframes popoverSlideUp {
        from { opacity: 0; transform: translateY(100%); }
        to   { opacity: 1; transform: translateY(0); }
    }
    .rule-popover-overlay {
        position: fixed;
        inset: 0;
        background: rgba(0,0,0,0.3);
        z-index: 59;
        animation: overlayFadeIn 0.2s ease;
    }
    .rule-popover-overlay.hidden { display: none; }
    @keyframes overlayFadeIn {
        from { opacity: 0; }
        to   { opacity: 1; }
    }
}

/* 导航栏规则手册按钮 */
.manual-links {
    display: flex;
    gap: 6px;
    align-items: center;
}
.manual-link-btn {
    display: inline-flex;
    align-items: center;
    gap: 4px;
    padding: 4px 10px;
    border-radius: 8px;
    font-size: 12px;
    font-weight: 500;
    text-decoration: none;
    border: 1px solid var(--border-color);
    color: var(--text-secondary);
    background: transparent;
    cursor: pointer;
    transition: background 0.15s, color 0.15s, border-color 0.15s;
    white-space: nowrap;
}
.manual-link-btn:hover {
    background: rgba(37,99,235,0.08);
    color: #2563EB;
    border-color: #2563EB;
}
[data-theme="dark"] .manual-link-btn {
    border-color: #4b5563;
    color: #d1d5db;
}
[data-theme="dark"] .manual-link-btn:hover {
    background: rgba(96,165,250,0.12);
    color: #60a5fa;
    border-color: #60a5fa;
}

@media print {
    body, main { background: #fff !important; color: #000 !important; }
    nav .relative.group { display: none !important; }
    .language-toggle, #themeToggle, #searchBtn, #searchClear, #searchLoading, #layoutToggle, #loadMoreWrap, #loadMoreBtn, #backToTop, #copyToast, #lightbox { display: none !important; }
    .qa-card button { display: none !important; }
    .qa-card { break-inside: avoid; box-shadow: none; border: 1px solid #e5e7eb; }
    #skeleton-wrap, #searchEmptyState { display: none !important; }
}