/*
 * 财税知识库样式
 * ===========
 */

/* 知识库英雄区 */
.knowledge-hero-section {
    padding: 7rem 0 4rem;
    background: linear-gradient(135deg, var(--light-blue) 0%, #e6f0ff 100%);
    position: relative;
    overflow: hidden;
}

.knowledge-hero-section::before {
    content: '';
    position: absolute;
    top: 0;
    right: 0;
    width: 40%;
    height: 100%;
    background-image: url('../images/knowledge-pattern.svg');
    background-repeat: no-repeat;
    background-position: right center;
    background-size: contain;
    opacity: 0.1;
}

.knowledge-hero-content {
    max-width: 800px;
    margin: 0 auto;
    text-align: center;
}

.knowledge-hero-title {
    font-size: 3.2rem;
    color: var(--dark-blue);
    margin-bottom: 1.5rem;
    font-weight: 700;
}

.knowledge-hero-description {
    font-size: 1.25rem;
    color: var(--gray-text);
    margin-bottom: 2.5rem;
    line-height: 1.6;
}

/* 搜索框 */
.knowledge-search {
    display: flex;
    max-width: 650px;
    margin: 0 auto;
    position: relative;
}

#knowledge-search-input {
    flex: 1;
    padding: 1rem 1.25rem;
    font-size: 1rem;
    border: 2px solid var(--gray-medium);
    border-radius: var(--border-radius-lg);
    box-shadow: 0 4px 12px rgba(0, 0, 0, 0.05);
    transition: var(--transition);
}

#knowledge-search-input:focus {
    outline: none;
    border-color: var(--primary-color);
    box-shadow: 0 4px 12px rgba(0, 85, 255, 0.1);
}

#knowledge-search-btn {
    margin-left: 0.75rem;
    padding: 0.75rem 1.5rem;
    border-radius: var(--border-radius-md);
    display: flex;
    align-items: center;
    gap: 0.5rem;
}

.search-icon {
    width: 20px;
    height: 20px;
    background-image: url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' fill='none' viewBox='0 0 24 24' stroke='white'%3E%3Cpath stroke-linecap='round' stroke-linejoin='round' stroke-width='2' d='M21 21l-6-6m2-5a7 7 0 11-14 0 7 7 0 0114 0z'%3E%3C/path%3E%3C/svg%3E");
    background-position: center;
    background-repeat: no-repeat;
    background-size: contain;
}

/* 知识分类导航 */
.knowledge-categories-section {
    padding: 4rem 0;
    background-color: var(--white);
}

.knowledge-categories {
    display: grid;
    grid-template-columns: repeat(4, 1fr);
    gap: 2rem;
}

.category-card {
    background-color: var(--white);
    border-radius: var(--border-radius-lg);
    padding: 2rem;
    box-shadow: var(--box-shadow);
    transition: var(--transition);
    height: 100%;
    display: flex;
    flex-direction: column;
}

.category-card:hover {
    transform: translateY(-5px);
    box-shadow: 0 10px 25px rgba(0, 85, 255, 0.15);
}

.category-icon {
    width: 64px;
    height: 64px;
    display: flex;
    align-items: center;
    justify-content: center;
    background-color: var(--light-blue);
    border-radius: var(--border-radius-md);
    margin-bottom: 1.5rem;
    transition: var(--transition);
}

.category-icon img {
    width: 32px;
    height: 32px;
}

.category-card:hover .category-icon {
    background-color: var(--primary-color);
}

.category-card:hover .category-icon img {
    filter: brightness(0) invert(1);
}

.category-title {
    font-size: 1.25rem;
    margin-bottom: 1.25rem;
    color: var(--dark-blue);
}

.category-list {
    list-style: none;
    padding: 0;
    margin: 0;
}

.category-list li {
    margin-bottom: 0.75rem;
}

.category-list a {
    color: var(--gray-text);
    transition: var(--transition);
    display: inline-block;
    padding: 0.25rem 0;
}

.category-list a:hover {
    color: var(--primary-color);
    transform: translateX(5px);
}

/* 热门政策样式 */
.hot-policies-section {
    padding: 5rem 0;
    background-color: var(--gray-light);
}

.policy-cards {
    display: grid;
    grid-template-columns: repeat(auto-fill, minmax(350px, 1fr));
    gap: 2rem;
    margin-top: 3rem;
}

.policy-card {
    background-color: var(--white);
    border-radius: var(--border-radius-lg);
    padding: 2rem;
    box-shadow: var(--box-shadow);
    transition: var(--transition);
    height: 100%;
    display: flex;
    flex-direction: column;
    position: relative;
    overflow: hidden;
}

.policy-card:hover {
    transform: translateY(-5px);
    box-shadow: 0 10px 25px rgba(0, 85, 255, 0.15);
}

.policy-tag {
    display: inline-block;
    background-color: rgba(0, 85, 255, 0.1);
    color: var(--primary-color);
    padding: 0.35rem 0.75rem;
    border-radius: var(--border-radius-md);
    font-size: 0.8rem;
    font-weight: 600;
    margin-bottom: 1rem;
}

.policy-title {
    font-size: 1.25rem;
    margin-bottom: 1rem;
    color: var(--dark-blue);
    line-height: 1.4;
}

.policy-description {
    color: var(--gray-text);
    margin-bottom: 1.5rem;
    flex-grow: 1;
    line-height: 1.6;
}

.policy-meta {
    display: flex;
    justify-content: space-between;
    color: var(--gray-text);
    font-size: 0.85rem;
    margin-bottom: 1.25rem;
}

.policy-link {
    color: var(--primary-color);
    font-weight: 600;
    display: inline-flex;
    align-items: center;
    gap: 0.5rem;
}

.policy-link:hover {
    text-decoration: underline;
}

.policy-link::after {
    content: "→";
    transition: transform 0.2s ease;
}

.policy-link:hover::after {
    transform: translateX(4px);
}

.view-more {
    text-align: center;
    margin-top: 3rem;
}

/* 政策解读样式 */
.policy-analysis-section {
    padding: 5rem 0;
    background-color: var(--white);
}

.analysis-list {
    display: flex;
    flex-direction: column;
    gap: 2rem;
    margin-top: 3rem;
}

.analysis-item {
    display: grid;
    grid-template-columns: 2fr 1fr;
    gap: 2rem;
    background-color: var(--white);
    border-radius: var(--border-radius-lg);
    padding: 2rem;
    box-shadow: var(--box-shadow);
    transition: var(--transition);
}

.analysis-item:hover {
    transform: translateY(-5px);
    box-shadow: 0 10px 25px rgba(0, 85, 255, 0.15);
}

.analysis-content {
    display: flex;
    flex-direction: column;
}

.analysis-title {
    font-size: 1.5rem;
    margin-bottom: 1rem;
    color: var(--dark-blue);
}

.analysis-excerpt {
    color: var(--gray-text);
    line-height: 1.6;
    margin-bottom: 1.5rem;
    flex-grow: 1;
}

.analysis-meta {
    display: flex;
    gap: 1.5rem;
    color: var(--gray-text);
    font-size: 0.9rem;
}

.analysis-author {
    display: flex;
    align-items: center;
    gap: 0.5rem;
}

.analysis-author::before {
    content: '';
    width: 16px;
    height: 16px;
    background-image: url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' fill='none' viewBox='0 0 24 24' stroke='%2364748B'%3E%3Cpath stroke-linecap='round' stroke-linejoin='round' stroke-width='2' d='M16 7a4 4 0 11-8 0 4 4 0 018 0zM12 14a7 7 0 00-7 7h14a7 7 0 00-7-7z'%3E%3C/path%3E%3C/svg%3E");
    background-position: center;
    background-repeat: no-repeat;
    background-size: contain;
}

.analysis-date {
    display: flex;
    align-items: center;
    gap: 0.5rem;
}

.analysis-date::before {
    content: '';
    width: 16px;
    height: 16px;
    background-image: url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' fill='none' viewBox='0 0 24 24' stroke='%2364748B'%3E%3Cpath stroke-linecap='round' stroke-linejoin='round' stroke-width='2' d='M8 7V3m8 4V3m-9 8h10M5 21h14a2 2 0 002-2V7a2 2 0 00-2-2H5a2 2 0 00-2 2v12a2 2 0 002 2z'%3E%3C/path%3E%3C/svg%3E");
    background-position: center;
    background-repeat: no-repeat;
    background-size: contain;
}

.analysis-image {
    border-radius: var(--border-radius-md);
    overflow: hidden;
    height: 100%;
    min-height: 200px;
}

.analysis-image img {
    width: 100%;
    height: 100%;
    object-fit: cover;
    transition: transform 0.3s ease;
}

.analysis-item:hover .analysis-image img {
    transform: scale(1.05);
}

/* 行业案例样式 */
.case-study-section {
    padding: 5rem 0;
    background-color: var(--gray-light);
}

.case-study-tabs {
    margin-top: 3rem;
}

.tab-nav {
    display: flex;
    overflow-x: auto;
    gap: 1rem;
    margin-bottom: 2rem;
    padding-bottom: 0.5rem;
}

.tab-btn {
    background: none;
    border: none;
    padding: 0.75rem 1.5rem;
    border-radius: var(--border-radius-md);
    cursor: pointer;
    white-space: nowrap;
    font-weight: 600;
    color: var(--gray-text);
    transition: var(--transition);
}

.tab-btn:hover {
    color: var(--primary-color);
}

.tab-btn.active {
    background-color: var(--primary-color);
    color: var(--white);
}

.tab-content {
    position: relative;
}

.tab-pane {
    display: none;
}

.tab-pane.active {
    display: block;
    animation: fadeIn 0.5s ease;
}

.case-cards {
    display: grid;
    grid-template-columns: repeat(auto-fill, minmax(300px, 1fr));
    gap: 2rem;
}

.case-card {
    background-color: var(--white);
    border-radius: var(--border-radius-lg);
    padding: 2rem;
    box-shadow: var(--box-shadow);
    transition: var(--transition);
    height: 100%;
    display: flex;
    flex-direction: column;
}

.case-card:hover {
    transform: translateY(-5px);
    box-shadow: 0 10px 25px rgba(0, 85, 255, 0.15);
}

.case-title {
    font-size: 1.25rem;
    margin-bottom: 1rem;
    color: var(--dark-blue);
}

.case-excerpt {
    color: var(--gray-text);
    margin-bottom: 1.5rem;
    flex-grow: 1;
    line-height: 1.6;
}

.case-link {
    color: var(--primary-color);
    font-weight: 600;
    display: inline-flex;
    align-items: center;
    gap: 0.5rem;
}

.case-link:hover {
    text-decoration: underline;
}

.case-link::after {
    content: "→";
    transition: transform 0.2s ease;
}

.case-link:hover::after {
    transform: translateX(4px);
}

/* 订阅区域样式 */
.subscribe-section {
    padding: 5rem 0;
    background: linear-gradient(135deg, var(--primary-color) 0%, var(--dark-blue) 100%);
    color: var(--white);
    text-align: center;
}

.subscribe-content {
    max-width: 700px;
    margin: 0 auto;
}

.subscribe-title {
    font-size: 2.5rem;
    margin-bottom: 1.5rem;
}

.subscribe-description {
    font-size: 1.125rem;
    margin-bottom: 2.5rem;
    opacity: 0.9;
}

.subscribe-form {
    max-width: 500px;
    margin: 0 auto;
}

.form-group {
    display: flex;
    gap: 1rem;
}

#subscribe-email {
    flex: 1;
    padding: 1rem 1.25rem;
    font-size: 1rem;
    border: none;
    border-radius: var(--border-radius-md);
    outline: none;
}

.form-note {
    font-size: 0.85rem;
    margin-top: 1rem;
    opacity: 0.7;
}

@keyframes fadeIn {
    from {
        opacity: 0;
        transform: translateY(10px);
    }
    to {
        opacity: 1;
        transform: translateY(0);
    }
}

/* 响应式样式 */
@media (max-width: 1024px) {
    .knowledge-hero-title {
        font-size: 2.5rem;
    }
    
    .knowledge-hero-description {
        font-size: 1.1rem;
    }
    
    .knowledge-categories {
        grid-template-columns: repeat(2, 1fr);
    }
    
    .analysis-item {
        grid-template-columns: 1.5fr 1fr;
    }
}

@media (max-width: 768px) {
    .knowledge-hero-section {
        padding: 6rem 0 3rem;
    }
    
    .knowledge-hero-title {
        font-size: 2.2rem;
    }
    
    .knowledge-search {
        flex-direction: column;
        gap: 1rem;
    }
    
    #knowledge-search-btn {
        margin-left: 0;
        width: 100%;
    }
    
    .policy-cards {
        grid-template-columns: 1fr;
    }
    
    .analysis-item {
        grid-template-columns: 1fr;
        gap: 1.5rem;
    }
    
    .analysis-image {
        order: -1;
    }
    
    .form-group {
        flex-direction: column;
    }
    
    .subscribe-form button {
        width: 100%;
    }
}

@media (max-width: 480px) {
    .knowledge-hero-title {
        font-size: 1.8rem;
    }
    
    .knowledge-hero-description {
        font-size: 1rem;
    }
    
    .knowledge-categories {
        grid-template-columns: 1fr;
    }
    
    .category-card {
        padding: 1.5rem;
    }
    
    .policy-card,
    .case-card {
        padding: 1.5rem;
    }
    
    .tab-nav {
        padding-bottom: 0.5rem;
        margin-bottom: 1.5rem;
    }
    
    .tab-btn {
        padding: 0.5rem 1rem;
        font-size: 0.9rem;
    }
    
    .case-cards {
        grid-template-columns: 1fr;
    }
    
    .subscribe-title {
        font-size: 1.8rem;
    }
    
    .subscribe-description {
        font-size: 1rem;
    }
}

/* 新增：热点税务解答样式 */
.tax-qa-section {
    padding: 5rem 0;
    background-color: var(--light-gray);
}

.tax-qa-container {
    margin-top: 2rem;
}

.tax-qa-cards {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: 1.5rem;
    margin-bottom: 1.5rem;
}

.tax-qa-card {
    background-color: var(--white);
    border-radius: var(--border-radius);
    box-shadow: var(--box-shadow-sm);
    padding: 1.5rem;
    transition: transform 0.3s ease, box-shadow 0.3s ease;
    height: 100%;
    display: flex;
    flex-direction: column;
}

.tax-qa-card:hover {
    transform: translateY(-5px);
    box-shadow: var(--box-shadow-md);
}

.qa-header {
    display: flex;
    justify-content: space-between;
    align-items: center;
    margin-bottom: 1rem;
}

.qa-tag {
    display: inline-block;
    background-color: var(--light-blue);
    color: var(--dark-blue);
    padding: 0.25rem 0.75rem;
    border-radius: 20px;
    font-size: 0.875rem;
    font-weight: 500;
}

.qa-date {
    color: var(--gray-text);
    font-size: 0.875rem;
}

.qa-question {
    color: var(--dark-blue);
    font-size: 1.25rem;
    margin-top: 0;
    margin-bottom: 1rem;
    line-height: 1.4;
}

.qa-answer {
    color: var(--gray-text);
    font-size: 0.95rem;
    line-height: 1.6;
    margin-bottom: 1.5rem;
    flex-grow: 1;
}

.qa-answer p {
    margin-bottom: 1rem;
}

.qa-answer ol, .qa-answer ul {
    padding-left: 1.5rem;
    margin-bottom: 1rem;
}

.qa-answer li {
    margin-bottom: 0.5rem;
}

.qa-more-link {
    color: var(--primary);
    font-weight: 500;
    text-decoration: none;
    display: inline-block;
    margin-top: auto;
}

.qa-more-link:hover {
    text-decoration: underline;
}

/* 新增：税收政策日历样式 */
.tax-calendar-section {
    padding: 5rem 0;
    background-color: var(--white);
    position: relative;
    overflow: hidden;
}

.tax-calendar-section:before {
    content: '';
    position: absolute;
    top: 0;
    right: 0;
    width: 30%;
    height: 100%;
    background-image: url('../images/calendar-pattern.svg');
    background-repeat: no-repeat;
    background-position: right center;
    opacity: 0.1;
    z-index: 0;
}

.calendar-description {
    text-align: center;
    max-width: 800px;
    margin: 0 auto 2rem;
    color: var(--gray-text);
}

.tax-calendar {
    background-color: var(--white);
    border-radius: var(--border-radius-lg);
    box-shadow: var(--box-shadow-md);
    overflow: hidden;
    max-width: 1000px;
    margin: 0 auto;
    position: relative;
    z-index: 1;
}

.calendar-header {
    display: flex;
    justify-content: space-between;
    align-items: center;
    padding: 1.5rem;
    background-color: var(--dark-blue);
    color: var(--white);
}

.current-month {
    font-size: 1.5rem;
    font-weight: 600;
}

.calendar-actions {
    display: flex;
    gap: 0.5rem;
}

.calendar-btn {
    background-color: rgba(255, 255, 255, 0.2);
    border: none;
    color: var(--white);
    padding: 0.5rem 1rem;
    border-radius: var(--border-radius);
    cursor: pointer;
    transition: background-color 0.3s ease;
}

.calendar-btn:hover {
    background-color: rgba(255, 255, 255, 0.3);
}

.calendar-body {
    padding: 1.5rem;
}

.calendar-event {
    display: flex;
    gap: 1.5rem;
    padding: 1.5rem;
    border-radius: var(--border-radius);
    background-color: var(--light-gray);
    margin-bottom: 1rem;
    transition: transform 0.3s ease;
    position: relative;
    overflow: hidden;
}

.calendar-event:hover {
    transform: translateX(5px);
}

.calendar-event:last-child {
    margin-bottom: 0;
}

.calendar-event.coming-soon {
    border-left: 4px solid var(--primary);
}

.event-date {
    display: flex;
    flex-direction: column;
    align-items: center;
    justify-content: center;
    min-width: 80px;
    height: 80px;
    background-color: var(--white);
    border-radius: var(--border-radius);
    box-shadow: var(--box-shadow-sm);
}

.event-day {
    font-size: 1.75rem;
    font-weight: 700;
    color: var(--dark-blue);
    line-height: 1;
}

.event-month {
    font-size: 0.875rem;
    color: var(--gray-text);
    margin-top: 0.25rem;
}

.event-content {
    flex: 1;
}

.event-title {
    font-size: 1.25rem;
    font-weight: 600;
    color: var(--dark-blue);
    margin-top: 0;
    margin-bottom: 0.5rem;
}

.event-description {
    font-size: 0.95rem;
    color: var(--gray-text);
    line-height: 1.6;
    margin: 0;
}

.event-type {
    position: absolute;
    top: 1rem;
    right: 1rem;
    padding: 0.25rem 0.75rem;
    border-radius: 20px;
    font-size: 0.875rem;
    font-weight: 500;
}

.event-type.policy-effect {
    background-color: rgba(46, 204, 113, 0.15);
    color: #27ae60;
}

.event-type.policy-expire {
    background-color: rgba(231, 76, 60, 0.15);
    color: #c0392b;
}

.event-type.declaration {
    background-color: rgba(52, 152, 219, 0.15);
    color: #2980b9;
}

.calendar-footer {
    padding: 1.5rem;
    border-top: 1px solid var(--gray-light);
    display: flex;
    justify-content: space-between;
    align-items: center;
}

.calendar-legend {
    display: flex;
    gap: 1.5rem;
}

.legend-item {
    display: flex;
    align-items: center;
    gap: 0.5rem;
}

.legend-color {
    width: 12px;
    height: 12px;
    border-radius: 50%;
}

.legend-color.policy-effect {
    background-color: #27ae60;
}

.legend-color.policy-expire {
    background-color: #c0392b;
}

.legend-color.declaration {
    background-color: #2980b9;
}

.legend-color.coming-soon {
    background-color: var(--primary);
}

.legend-text {
    font-size: 0.875rem;
    color: var(--gray-text);
}

.calendar-download {
    text-align: right;
}

.download-link {
    color: var(--primary);
    text-decoration: none;
    font-weight: 500;
    font-size: 0.95rem;
    display: inline-flex;
    align-items: center;
}

.download-link:before {
    content: '';
    display: inline-block;
    width: 16px;
    height: 16px;
    background-image: url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' viewBox='0 0 24 24' fill='%234285f4'%3E%3Cpath d='M19 9h-4V3H9v6H5l7 7 7-7zM5 18v2h14v-2H5z'/%3E%3C/svg%3E");
    background-size: contain;
    margin-right: 0.5rem;
}

.download-link:hover {
    text-decoration: underline;
}

/* 响应式调整 */
@media (max-width: 992px) {
    .tax-qa-cards {
        grid-template-columns: repeat(2, 1fr);
    }
}

@media (max-width: 768px) {
    .tax-qa-cards {
        grid-template-columns: 1fr;
    }

    .calendar-event {
        flex-direction: column;
        gap: 1rem;
    }

    .event-date {
        min-width: 60px;
        height: 60px;
        align-self: flex-start;
    }

    .event-type {
        position: static;
        align-self: flex-start;
        margin-top: 1rem;
    }

    .calendar-footer {
        flex-direction: column;
        gap: 1rem;
    }

    .calendar-legend {
        flex-wrap: wrap;
        gap: 1rem;
    }

    .calendar-download {
        text-align: left;
    }
}