/* 质点智库专用样式 */
@import url('https://fonts.googleapis.com/css2?family=Noto+Sans+SC:wght@300;400;500;700;900&display=swap');

:root {
    --tk-black: #0a0a0a;
    --tk-gray: #1a1a1a;
    --tk-gold: #D4AF37;
    --tk-gold-light: #F5E6A8;
    --tk-gold-dark: #B8860B;
    --tk-white: #ffffff;
    --tk-gray-text: #f8f9fa;
    --tk-gray-medium: #6c757d;
}

body {
    font-family: 'Noto Sans SC', 'Poppins', sans-serif;
    background: linear-gradient(135deg, var(--tk-black) 0%, var(--tk-gray) 50%, var(--tk-black) 100%);
    color: var(--tk-gray-text);
    overflow-x: hidden;
}

/* 智库专用渐变文字 */
.tk-gradient-text {
    background: linear-gradient(135deg, #D4AF37, #FFD700, #F5E6A8, #C9AA71, #B8860B);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
    background-size: 200% 200%;
    animation: tk-shimmer 4s ease-in-out infinite;
}

@keyframes tk-shimmer {
    0% { background-position: 0% 50%; }
    50% { background-position: 100% 50%; }
    100% { background-position: 0% 50%; }
}

/* 智库卡片样式 */
.tk-card {
    background: rgba(255, 255, 255, 0.03);
    border: 1px solid rgba(212, 175, 55, 0.15);
    backdrop-filter: blur(15px);
    transition: all 0.5s cubic-bezier(0.4, 0, 0.2, 1);
    position: relative;
    overflow: hidden;
}

.tk-card::before {
    content: '';
    position: absolute;
    top: 0;
    left: -100%;
    width: 100%;
    height: 100%;
    background: linear-gradient(90deg, transparent, rgba(212, 175, 55, 0.1), transparent);
    transition: left 0.6s ease;
}

.tk-card:hover::before {
    left: 100%;
}

.tk-card:hover {
    border-color: rgba(212, 175, 55, 0.4);
    background: rgba(255, 255, 255, 0.08);
    transform: translateY(-8px);
    box-shadow: 
        0 25px 50px rgba(0, 0, 0, 0.5),
        0 0 50px rgba(212, 175, 55, 0.15);
}

/* 标签页样式 */
.tk-tab {
    position: relative;
    padding: 12px 24px;
    border: 1px solid rgba(212, 175, 55, 0.2);
    background: rgba(0, 0, 0, 0.3);
    transition: all 0.3s ease;
    cursor: pointer;
}

.tk-tab.active {
    background: linear-gradient(135deg, rgba(212, 175, 55, 0.2), rgba(255, 215, 0, 0.1));
    border-color: rgba(212, 175, 55, 0.5);
    color: var(--tk-gold);
}

.tk-tab:hover {
    background: rgba(212, 175, 55, 0.1);
    border-color: rgba(212, 175, 55, 0.3);
}

/* 行业分类容器样式 */
#industry-tabs {
    display: flex;
    flex-wrap: nowrap;
    gap: 8px;
    align-items: flex-start;
    justify-content: flex-start;
    padding: 0;
    overflow-x: auto;
    overflow-y: hidden;
    scrollbar-width: none;
    -ms-overflow-style: none;
}

#industry-tabs::-webkit-scrollbar {
    display: none;
}

#sub-industry-tabs {
    display: flex;
    flex-wrap: wrap;
    gap: 12px;
    align-items: flex-start;
    justify-content: flex-start;
    padding: 0;
}

#third-level-tabs {
    display: flex;
    flex-wrap: wrap;
    gap: 12px;
    align-items: flex-start;
    justify-content: flex-start;
    padding: 0;
}

#fourth-level-tabs {
    display: flex;
    flex-wrap: wrap;
    gap: 8px;
    align-items: flex-start;
    justify-content: flex-start;
    padding: 0;
}

/* 统一分类Tab样式 */
.industry-tab,
.sub-industry-tab,
.third-level-tab,
.fourth-level-tab {
    display: flex;
    align-items: center;
    padding: 8px 12px;
    background: rgba(0, 0, 0, 0.4);
    border: 1px solid rgba(212, 175, 55, 0.15);
    border-radius: 8px;
    color: #e5e7eb;
    font-size: 13px;
    font-weight: 500;
    transition: all 0.3s cubic-bezier(0.4, 0, 0.2, 1);
    cursor: pointer;
    position: relative;
    overflow: hidden;
    backdrop-filter: blur(10px);
    white-space: nowrap;
    flex-shrink: 0;
    min-width: fit-content;
}

/* 统一悬停和激活状态样式 */
.industry-tab::before,
.sub-industry-tab::before,
.third-level-tab::before,
.fourth-level-tab::before {
    content: '';
    position: absolute;
    top: 0;
    left: -100%;
    width: 100%;
    height: 100%;
    background: linear-gradient(90deg, transparent, rgba(212, 175, 55, 0.1), transparent);
    transition: left 0.6s ease;
}

.industry-tab:hover::before,
.sub-industry-tab:hover::before,
.third-level-tab:hover::before,
.fourth-level-tab:hover::before {
    left: 100%;
}

.industry-tab:hover,
.sub-industry-tab:hover,
.third-level-tab:hover,
.fourth-level-tab:hover {
    background: rgba(212, 175, 55, 0.1);
    border-color: rgba(212, 175, 55, 0.3);
    color: #fbbf24;
    transform: translateY(-2px);
    box-shadow: 0 8px 25px rgba(212, 175, 55, 0.15);
}

.industry-tab.active,
.sub-industry-tab.active,
.third-level-tab.active,
.fourth-level-tab.active {
    background: linear-gradient(135deg, rgba(212, 175, 55, 0.2), rgba(255, 215, 0, 0.15));
    border-color: rgba(212, 175, 55, 0.5);
    color: var(--tk-gold);
    transform: translateY(-1px);
    box-shadow: 0 4px 15px rgba(212, 175, 55, 0.25);
}

.industry-tab.active::after,
.sub-industry-tab.active::after,
.third-level-tab.active::after,
.fourth-level-tab.active::after {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    height: 2px;
    background: linear-gradient(90deg, transparent, var(--tk-gold), transparent);
    opacity: 0.8;
}

.industry-tab i,
.sub-industry-tab i,
.third-level-tab i,
.fourth-level-tab i {
    font-size: 16px;
    opacity: 0.8;
    transition: opacity 0.3s ease;
}

.industry-tab:hover i,
.industry-tab.active i,
.sub-industry-tab:hover i,
.sub-industry-tab.active i,
.third-level-tab:hover i,
.third-level-tab.active i,
.fourth-level-tab:hover i,
.fourth-level-tab.active i {
    opacity: 1;
}

.industry-tab span,
.sub-industry-tab span,
.third-level-tab span,
.fourth-level-tab span {
    font-weight: 500;
    letter-spacing: 0.025em;
}

/* 分类响应式调整 */
@media (max-width: 768px) {
    #classification-area .mb-6 {
        padding: 0 12px;
        margin-bottom: 20px;
    }
    
    #industry-tabs {
        gap: 6px;
        flex-wrap: nowrap;
        overflow-x: auto;
    }
    
    #sub-industry-tabs,
    #third-level-tabs,
    #fourth-level-tabs {
        gap: 8px;
    }
    
    .industry-tab,
    .sub-industry-tab,
    .third-level-tab,
    .fourth-level-tab {
        padding: 6px 10px;
        font-size: 12px;
    }
}

@media (max-width: 640px) {
    #classification-area .mb-6 {
        padding: 0 8px;
        margin-bottom: 16px;
    }
    
    #industry-tabs {
        gap: 4px;
        flex-wrap: nowrap;
        overflow-x: auto;
    }
    
    #sub-industry-tabs,
    #third-level-tabs,
    #fourth-level-tabs {
        gap: 6px;
    }
    
    .industry-tab,
    .sub-industry-tab,
    .third-level-tab,
    .fourth-level-tab {
        padding: 5px 8px;
        font-size: 11px;
    }
}

/* 报告卡片专用样式 */
.tk-report-card {
    background: rgba(255, 255, 255, 0.03);
    border: 1px solid rgba(212, 175, 55, 0.1);
    border-radius: 12px;
    padding: 20px;
    transition: all 0.3s ease, opacity 0.2s ease;
    cursor: pointer;
    position: relative;
    overflow: hidden;
    backdrop-filter: blur(10px);
    group: true;
}

.tk-report-card::after {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    height: 2px;
    background: linear-gradient(90deg, transparent, var(--tk-gold), transparent);
    opacity: 0;
    transition: opacity 0.3s ease;
}

.tk-report-card:hover::after {
    opacity: 1;
}

.tk-report-card:hover {
    transform: translateY(-6px) scale(1.02);
    border-color: rgba(212, 175, 55, 0.4);
    box-shadow: 
        0 20px 40px rgba(0, 0, 0, 0.6),
        0 0 30px rgba(212, 175, 55, 0.2);
}

/* 标签样式 */
.tk-tag {
    background: linear-gradient(135deg, rgba(212, 175, 55, 0.2), rgba(184, 134, 11, 0.3));
    border: 1px solid rgba(212, 175, 55, 0.3);
    color: var(--tk-gold);
    padding: 4px 12px;
    border-radius: 20px;
    font-size: 12px;
    font-weight: 500;
}

/* 按钮样式 */
.tk-btn {
    background: linear-gradient(135deg, var(--tk-gold-dark), var(--tk-gold));
    color: black;
    border: none;
    padding: 12px 24px;
    border-radius: 8px;
    font-weight: 500;
    transition: all 0.3s ease;
    position: relative;
    overflow: hidden;
}

.tk-btn::before {
    content: '';
    position: absolute;
    top: 0;
    left: -100%;
    width: 100%;
    height: 100%;
    background: linear-gradient(90deg, transparent, rgba(255, 255, 255, 0.2), transparent);
    transition: left 0.6s ease;
}

.tk-btn:hover::before {
    left: 100%;
}

.tk-btn:hover {
    transform: translateY(-2px);
    box-shadow: 0 10px 25px rgba(212, 175, 55, 0.4);
}

/* 导航栏样式 */
.tk-nav {
    backdrop-filter: blur(15px);
    background: rgba(10, 10, 10, 0.9);
    border-bottom: 1px solid rgba(212, 175, 55, 0.1);
}

/* 滚动动画 */
.tk-fade-up {
    opacity: 0;
    transform: translateY(30px);
    transition: all 0.8s ease-out;
}

.tk-fade-up.visible {
    opacity: 1;
    transform: translateY(0);
}

/* 响应式设计 */
@media (max-width: 768px) {
    .tk-card {
        margin-bottom: 16px;
    }
    
    .tk-report-card {
        padding: 16px;
    }
}

/* 加载动画 */
.tk-loading {
    display: inline-block;
    width: 20px;
    height: 20px;
    border: 3px solid rgba(212, 175, 55, 0.3);
    border-radius: 50%;
    border-top-color: var(--tk-gold);
    animation: tk-spin 1s ease-in-out infinite;
}

@keyframes tk-spin {
    to { transform: rotate(360deg); }
}

/* 特殊装饰元素 */
.tk-decorator {
    position: relative;
}

.tk-decorator::before {
    content: '';
    position: absolute;
    top: 50%;
    left: -20px;
    width: 4px;
    height: 4px;
    background: var(--tk-gold);
    border-radius: 50%;
    transform: translateY(-50%);
}

.tk-decorator::after {
    content: '';
    position: absolute;
    top: 50%;
    right: -20px;
    width: 4px;
    height: 4px;
    background: var(--tk-gold);
    border-radius: 50%;
    transform: translateY(-50%);
}



/* 二级分类显示/隐藏动画 */
.sub-tabs-show {
    opacity: 1 !important;
    visibility: visible !important;
    transform: translateY(0) !important;
}

.sub-tabs-hide {
    opacity: 0 !important;
    visibility: hidden !important;
    transform: translateY(4px) !important;
}





/* 三级分类显示/隐藏动画 */
.third-tabs-show {
    opacity: 1 !important;
    visibility: visible !important;
    transform: translateY(0) !important;
}

.third-tabs-hide {
    opacity: 0 !important;
    visibility: hidden !important;
    transform: translateY(4px) !important;
}