/* 关于页面特定样式 */
.about-page {
    padding: 30px 0;
    background-color: var(--light-gray);
}

.about-page .page-title {
    text-align: center;
    font-size: 36px;
    color: var(--dark-blue);
    margin-bottom: 40px;
}

/* 关于部分通用样式 */
.about-section {
    margin-bottom: 60px;
}

.about-section h2 {
    font-size: 28px;
    color: var(--dark-blue);
    margin-bottom: 25px;
    display: flex;
    align-items: center;
    gap: 10px;
}

.about-section h2 i {
    color: var(--patriotic-red);
}

/* 网站使命部分 */
.mission-section {
    display: grid;
    grid-template-columns: 2fr 1fr;
    gap: 40px;
    align-items: center;
    background: white;
    border-radius: var(--border-radius);
    padding: 20px;
    box-shadow: var(--shadow);
}

@media (max-width: 768px) {
    .mission-section {
        grid-template-columns: 1fr;
    }
}

.mission-content p {
    margin-bottom: 15px;
    font-size: 16px;
    line-height: 1.7;
    color: #555;
}

.mission-image .image-container {
    width: 200px;
    height: 200px;
    background: linear-gradient(135deg, var(--patriotic-red), var(--dark-red));
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    margin: 0 auto;
    color: white;
    font-size: 80px;
}

/* 核心价值观部分 */
.values-section {
    background: white;
    border-radius: var(--border-radius);
    padding: 20px;
    box-shadow: var(--shadow);
}

.values-grid {
    display: grid;
    grid-template-columns: repeat(4, 1fr);
    gap: 30px;
}

@media (max-width: 992px) {
    .values-grid {
        grid-template-columns: repeat(2, 1fr);
    }
}

@media (max-width: 576px) {
    .values-grid {
        grid-template-columns: 1fr;
    }
}

.value-card {
    text-align: center;
    padding: 30px 20px;
    border-radius: var(--border-radius);
    background: var(--light-gray);
    transition: var(--transition);
    border-top: 4px solid transparent;
}

.value-card:hover {
    border-top-color: var(--patriotic-red);
    transform: translateY(-5px);
    box-shadow: 0 10px 20px rgba(0, 0, 0, 0.1);
}

.value-icon {
    width: 70px;
    height: 70px;
    background: linear-gradient(135deg, var(--patriotic-red), var(--light-red));
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    margin: 0 auto 20px;
    color: white;
    font-size: 30px;
}

.value-card h3 {
    font-size: 20px;
    color: var(--dark-blue);
    margin-bottom: 15px;
}

.value-card p {
    font-size: 15px;
    color: var(--dark-gray);
    line-height: 1.6;
}

/* 网站特色部分 */
.features-section {
    background: white;
    border-radius: var(--border-radius);
    padding: 20px;
    box-shadow: var(--shadow);
}

.features-list {
    display: flex;
    flex-direction: column;
    gap: 20px;
}

.feature-item {
    display: grid;
    grid-template-columns: auto 1fr;
    gap: 25px;
    align-items: center;
    padding: 25px;
    background: var(--light-gray);
    border-radius: var(--border-radius);
    transition: var(--transition);
}

.feature-item:hover {
    background: rgba(215, 0, 15, 0.05);
    transform: translateX(5px);
}

.feature-number {
    width: 60px;
    height: 60px;
    background: linear-gradient(135deg, var(--patriotic-red), var(--dark-red));
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    color: white;
    font-size: 24px;
    font-weight: 700;
}

.feature-content h3 {
    font-size: 20px;
    color: var(--dark-blue);
    margin-bottom: 10px;
}

.feature-content p {
    font-size: 16px;
    color: var(--dark-gray);
    line-height: 1.6;
}

/* 发展愿景部分 */
.vision-section {
    display: grid;
    grid-template-columns: 1fr 2fr;
    gap: 40px;
    align-items: center;
    background: white;
    border-radius: var(--border-radius);
    padding: 20px;
    box-shadow: var(--shadow);
}

@media (max-width: 768px) {
    .vision-section {
        grid-template-columns: 1fr;
    }
}

.vision-image .image-container {
    width: 200px;
    height: 200px;
    background: linear-gradient(135deg, #2c3e50, #4a6491);
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    margin: 0 auto;
    color: white;
    font-size: 80px;
}

.vision-content p {
    margin-bottom: 15px;
    font-size: 16px;
    line-height: 1.7;
    color: #555;
}

/* 加入我们部分 */
.join-section {
    background: white;
    border-radius: var(--border-radius);
    padding: 20px;
    box-shadow: var(--shadow);
    text-align: center;
}

.join-section > p {
    font-size: 16px;
    color: #555;
    margin-bottom: 30px;
    max-width: 800px;
    margin-left: auto;
    margin-right: auto;
}

.join-options {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: 30px;
    margin-top: 30px;
}

@media (max-width: 992px) {
    .join-options {
        grid-template-columns: repeat(2, 1fr);
    }
}

@media (max-width: 576px) {
    .join-options {
        grid-template-columns: 1fr;
    }
}

.join-option {
    padding: 30px 20px;
    border-radius: var(--border-radius);
    background: var(--light-gray);
    transition: var(--transition);
}

.join-option:hover {
    transform: translateY(-5px);
    box-shadow: 0 10px 20px rgba(0, 0, 0, 0.1);
    background: white;
}

.join-option i {
    font-size: 50px;
    color: var(--patriotic-red);
    margin-bottom: 20px;
}

.join-option h3 {
    font-size: 20px;
    color: var(--dark-blue);
    margin-bottom: 15px;
}

.join-option p {
    font-size: 15px;
    color: var(--dark-gray);
    margin-bottom: 20px;
    line-height: 1.6;
}

.join-option .btn-secondary {
    padding: 10px 25px;
    font-size: 15px;
}

/* 模态框样式 */
.modal {
    display: none;
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background-color: rgba(0, 0, 0, 0.5);
    z-index: 1100;
    align-items: center;
    justify-content: center;
}

.modal.active {
    display: flex;
}

.modal-content {
    background: white;
    border-radius: var(--border-radius);
    width: 90%;
    max-width: 500px;
    box-shadow: 0 10px 30px rgba(0, 0, 0, 0.2);
    overflow: hidden;
}

.modal-header {
    display: flex;
    justify-content: space-between;
    align-items: center;
    padding: 20px 25px;
    background: linear-gradient(135deg, var(--patriotic-red), var(--dark-red));
    color: white;
}

.modal-header h3 {
    font-size: 22px;
}

.modal-close {
    background: none;
    border: none;
    color: white;
    font-size: 28px;
    cursor: pointer;
    line-height: 1;
}

.modal-body {
    padding: 30px 25px;
}

.modal-body p {
    margin-bottom: 25px;
    color: #555;
    text-align: center;
}

.share-buttons {
    display: grid;
    grid-template-columns: repeat(2, 1fr);
    gap: 15px;
    margin-bottom: 25px;
}

@media (max-width: 480px) {
    .share-buttons {
        grid-template-columns: 1fr;
    }
}

.share-btn {
    padding: 15px;
    border: none;
    border-radius: var(--border-radius);
    font-size: 16px;
    font-weight: 500;
    cursor: pointer;
    transition: var(--transition);
    display: flex;
    align-items: center;
    justify-content: center;
    gap: 10px;
}

.share-btn.wechat {
    background-color: #09bb07;
    color: white;
}

.share-btn.weibo {
    background-color: #e6162d;
    color: white;
}

.share-btn.qq {
    background-color: #12b7f5;
    color: white;
}

.share-btn.link {
    background-color: var(--dark-gray);
    color: white;
}

.share-btn:hover {
    opacity: 0.9;
    transform: translateY(-2px);
}

.share-link {
    display: flex;
    gap: 10px;
}

.share-link input {
    flex: 1;
    padding: 12px 15px;
    border: 1px solid var(--medium-gray);
    border-radius: var(--border-radius);
    font-size: 15px;
}

.share-link input:focus {
    outline: none;
    border-color: var(--patriotic-red);
}