/* 补充样式 - 多页面扩展 */

/* 模式优势区域 */
.model-advantages-section {
    background: var(--bg-light);
}

.model-advantages-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(250px, 1fr));
    gap: 2rem;
}

.model-advantage-card {
    background: var(--white);
    padding: 2.5rem 2rem;
    border-radius: 10px;
    text-align: center;
    box-shadow: var(--shadow);
    transition: all 0.3s ease;
}

.model-advantage-card:hover {
    transform: translateY(-10px);
    box-shadow: var(--shadow-lg);
}

.advantage-icon-large {
    font-size: 3.5rem;
    margin-bottom: 1.5rem;
}

.model-advantage-card h3 {
    margin-bottom: 1rem;
    color: var(--primary-color);
}

.model-advantage-card p {
    color: var(--text-light);
}

/* 实施路径 */
.implementation-section {
    background: var(--white);
}

.implementation-steps {
    display: flex;
    align-items: center;
    justify-content: space-between;
    flex-wrap: wrap;
    gap: 1rem;
}

.step-item {
    flex: 1;
    min-width: 200px;
    background: var(--bg-light);
    padding: 2rem 1.5rem;
    border-radius: 10px;
    text-align: center;
    box-shadow: var(--shadow);
}

.step-number {
    font-size: 0.9rem;
    font-weight: bold;
    color: var(--primary-color);
    margin-bottom: 1rem;
}

.step-item h3 {
    margin-bottom: 0.5rem;
    color: var(--text-dark);
}

.step-item p {
    color: var(--text-light);
    font-size: 0.9rem;
}

.step-arrow {
    font-size: 2rem;
    color: var(--primary-color);
    font-weight: bold;
}

/* 公益页面 */
.page-header-charity {
    background: linear-gradient(135deg, #FF6B6B 0%, #FF8E53 100%);
}

.charity-intro-section {
    background: var(--white);
}

.charity-intro-content {
    text-align: center;
    max-width: 900px;
    margin: 0 auto;
}

.charity-intro-content h2 {
    font-size: 2rem;
    margin-bottom: 1.5rem;
    color: var(--primary-color);
}

.charity-values {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(200px, 1fr));
    gap: 2rem;
    margin-top: 3rem;
}

.charity-value-item {
    padding: 2rem 1.5rem;
    background: var(--bg-light);
    border-radius: 10px;
    transition: all 0.3s ease;
}

.charity-value-item:hover {
    transform: translateY(-5px);
    box-shadow: var(--shadow);
}

.charity-value-icon {
    font-size: 3rem;
    margin-bottom: 1rem;
}

.charity-value-item h3 {
    margin-bottom: 0.5rem;
    color: var(--primary-color);
}

.charity-value-item p {
    color: var(--text-light);
    font-size: 0.9rem;
}

/* 公益视频 */
.charity-video-section {
    background: var(--bg-light);
}

.charity-video-container {
    max-width: 900px;
    margin: 0 auto;
}

.charity-main-video {
    width: 100%;
    border-radius: 10px;
    box-shadow: var(--shadow-lg);
    margin-bottom: 2rem;
}

.charity-video-info {
    text-align: center;
}

.charity-video-info h3 {
    margin-bottom: 0.5rem;
    color: var(--primary-color);
}

.charity-video-info p {
    color: var(--text-light);
}

/* 公益画廊 */
.charity-gallery-section {
    background: var(--white);
}

.section-subtitle {
    text-align: center;
    color: var(--text-light);
    margin-top: -2rem;
    margin-bottom: 3rem;
}

.charity-gallery-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(280px, 1fr));
    gap: 1.5rem;
    margin-bottom: 2rem;
}

.gallery-item {
    aspect-ratio: 4/3;
    border-radius: 10px;
    overflow: hidden;
    box-shadow: var(--shadow);
    transition: all 0.3s ease;
}

.gallery-placeholder {
    background: var(--bg-light);
    display: flex;
    align-items: center;
    justify-content: center;
    cursor: pointer;
}

.gallery-placeholder:hover {
    transform: translateY(-5px);
    box-shadow: var(--shadow-lg);
}

.placeholder-content {
    text-align: center;
}

.placeholder-icon {
    font-size: 3rem;
    margin-bottom: 1rem;
    opacity: 0.5;
}

.placeholder-content h4 {
    margin-bottom: 0.5rem;
    color: var(--text-dark);
}

.placeholder-content p {
    color: var(--text-light);
    font-size: 0.9rem;
}

.gallery-note {
    text-align: center;
    padding: 1.5rem;
    background: var(--bg-light);
    border-radius: 10px;
    color: var(--text-light);
}

/* 参与公益 */
.charity-participate-section {
    background: linear-gradient(135deg, #fef3c7 0%, #fde68a 100%);
}

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

.participate-content h2 {
    font-size: 2rem;
    margin-bottom: 1.5rem;
    color: var(--primary-color);
}

.participate-content p {
    font-size: 1.1rem;
    color: var(--text-dark);
    margin-bottom: 2rem;
    line-height: 1.8;
}

.participate-actions {
    display: flex;
    gap: 1rem;
    justify-content: center;
}

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

.btn-primary:hover {
    background: var(--primary-dark);
    transform: translateY(-2px);
    box-shadow: var(--shadow-lg);
}

/* 联系页面 */
.contact-info-section {
    background: var(--bg-light);
}

.contact-info-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(280px, 1fr));
    gap: 2rem;
}

.contact-info-card {
    background: var(--white);
    padding: 2.5rem 2rem;
    border-radius: 10px;
    text-align: center;
    box-shadow: var(--shadow);
    transition: all 0.3s ease;
}

.contact-info-card:hover {
    transform: translateY(-5px);
    box-shadow: var(--shadow-lg);
}

.contact-info-icon {
    font-size: 3rem;
    margin-bottom: 1.5rem;
}

.contact-info-card h3 {
    margin-bottom: 1rem;
    color: var(--primary-color);
}

.contact-info-text {
    color: var(--text-dark);
    font-size: 1.1rem;
    margin-bottom: 0.5rem;
}

.contact-info-note {
    color: var(--text-light);
    font-size: 0.9rem;
}

/* 联系表单 */
.contact-form-section {
    background: var(--white);
}

.contact-form-wrapper {
    max-width: 900px;
    margin: 0 auto;
    background: var(--bg-light);
    padding: 3rem;
    border-radius: 10px;
    box-shadow: var(--shadow);
}

.form-header {
    text-align: center;
    margin-bottom: 2rem;
}

.form-header h2 {
    font-size: 2rem;
    margin-bottom: 0.5rem;
    color: var(--primary-color);
}

.form-header p {
    color: var(--text-light);
}

.contact-form {
    display: flex;
    flex-direction: column;
    gap: 1.5rem;
}

.form-row {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 1.5rem;
}

.form-group {
    display: flex;
    flex-direction: column;
}

.form-group label {
    margin-bottom: 0.5rem;
    color: var(--text-dark);
    font-weight: 500;
}

.form-group input,
.form-group select,
.form-group textarea {
    padding: 12px 15px;
    border: 2px solid #e5e7eb;
    border-radius: 8px;
    font-size: 1rem;
    transition: border-color 0.3s ease;
    font-family: inherit;
}

.form-group input:focus,
.form-group select:focus,
.form-group textarea:focus {
    outline: none;
    border-color: var(--primary-color);
}

.form-group textarea {
    resize: vertical;
}

.form-actions {
    display: flex;
    gap: 1rem;
    justify-content: center;
    margin-top: 1rem;
}

.btn-large {
    padding: 14px 40px;
    font-size: 1.05rem;
}

.btn-outline-dark {
    display: inline-block;
    padding: 12px 30px;
    border-radius: 50px;
    text-decoration: none;
    font-weight: 600;
    transition: all 0.3s ease;
    border: 2px solid var(--text-dark);
    background: transparent;
    color: var(--text-dark);
}

.btn-outline-dark:hover {
    background: var(--text-dark);
    color: var(--white);
}

/* FAQ */
.faq-section {
    background: var(--bg-light);
}

.faq-list {
    max-width: 900px;
    margin: 0 auto;
}

.faq-item {
    background: var(--white);
    margin-bottom: 1rem;
    border-radius: 10px;
    box-shadow: var(--shadow);
    overflow: hidden;
}

.faq-question {
    display: flex;
    justify-content: space-between;
    align-items: center;
    padding: 1.5rem 2rem;
    cursor: pointer;
    transition: background 0.3s ease;
}

.faq-question:hover {
    background: var(--bg-light);
}

.faq-question h3 {
    font-size: 1.1rem;
    color: var(--text-dark);
    flex: 1;
}

.faq-toggle {
    font-size: 1.5rem;
    color: var(--primary-color);
    font-weight: bold;
    transition: transform 0.3s ease;
    display: inline-block;
    min-width: 30px;
    text-align: center;
}

.faq-item.active .faq-toggle {
    transform: rotate(180deg);
}

.faq-answer {
    max-height: 0;
    overflow: hidden;
    padding: 0 2rem;
    color: var(--text-light);
    line-height: 1.8;
    transition: max-height 0.3s ease, padding 0.3s ease;
}

.faq-item.active .faq-answer {
    max-height: 500px;
    padding-bottom: 1.5rem;
}

/* 下载页面 */
.download-intro-section {
    background: var(--white);
}

.download-intro-content {
    text-align: center;
    max-width: 900px;
    margin: 0 auto;
}

.download-intro-content h2 {
    font-size: 2rem;
    margin-bottom: 1.5rem;
    color: var(--primary-color);
}

.download-tips {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(250px, 1fr));
    gap: 2rem;
    margin-top: 3rem;
}

.tip-item {
    display: flex;
    gap: 1.5rem;
    padding: 1.5rem;
    background: var(--bg-light);
    border-radius: 10px;
    text-align: left;
}

.tip-icon {
    font-size: 2.5rem;
}

.tip-content h4 {
    margin-bottom: 0.5rem;
    color: var(--primary-color);
}

.tip-content p {
    color: var(--text-light);
    font-size: 0.9rem;
}

/* 应用下载 */
.download-app-section {
    background: var(--bg-light);
}

.app-download-cards {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(400px, 1fr));
    gap: 2rem;
    max-width: 1000px;
    margin: 0 auto;
}

.app-download-card {
    background: var(--white);
    padding: 2.5rem;
    border-radius: 15px;
    box-shadow: var(--shadow);
    display: flex;
    flex-direction: column;
    align-items: center;
    text-align: center;
    transition: all 0.3s ease;
}

.app-download-card:hover {
    transform: translateY(-10px);
    box-shadow: var(--shadow-lg);
}

.app-icon-svg {
    width: 80px;
    height: 80px;
    fill: var(--primary-color);
    margin-bottom: 1.5rem;
    transition: all 0.3s ease;
}

.app-download-card:hover .app-icon-svg {
    transform: scale(1.1);
    fill: var(--secondary-color);
}

.app-info {
    flex: 1;
    width: 100%;
}

.app-info h3 {
    font-size: 1.5rem;
    margin-bottom: 0.5rem;
    color: var(--primary-color);
}

.app-version,
.app-size {
    color: var(--text-light);
    font-size: 0.9rem;
    margin-bottom: 0.3rem;
}

.app-features {
    list-style: none;
    margin: 1.5rem 0;
    text-align: left;
}

.app-features li {
    padding: 0.3rem 0;
    color: var(--text-dark);
    font-size: 0.95rem;
}

.btn-download-app {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    gap: 0.6rem;
    padding: 14px 40px;
    background: var(--primary-color);
    color: var(--white);
    border-radius: 50px;
    text-decoration: none;
    font-weight: 600;
    transition: all 0.3s ease;
    margin-top: 1rem;
    white-space: nowrap;
}

.btn-download-app:hover {
    background: var(--primary-dark);
    transform: translateY(-2px);
    box-shadow: var(--shadow-lg);
}

.download-icon-svg {
    width: 20px;
    height: 20px;
    fill: currentColor;
    flex-shrink: 0;
}

/* 第三方应用 */
.download-third-party-section {
    background: var(--white);
}

.third-party-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(320px, 1fr));
    gap: 2rem;
    max-width: 1200px;
    margin: 0 auto;
}

.third-party-card {
    background: var(--bg-light);
    padding: 2rem;
    border-radius: 12px;
    display: flex;
    flex-direction: column;
    align-items: center;
    text-align: center;
    gap: 1.2rem;
    box-shadow: var(--shadow);
    transition: all 0.3s ease;
    min-height: 280px;
}

.third-party-card:hover {
    transform: translateY(-5px);
    box-shadow: var(--shadow-lg);
}

.third-party-icon-svg {
    width: 64px;
    height: 64px;
    fill: var(--primary-color);
    flex-shrink: 0;
    transition: all 0.3s ease;
}

.third-party-card:hover .third-party-icon-svg {
    transform: scale(1.1);
    fill: var(--secondary-color);
}

.third-party-info {
    flex: 1;
    display: flex;
    flex-direction: column;
    gap: 0.4rem;
}

.third-party-info h3 {
    margin: 0;
    color: var(--primary-color);
    font-size: 1.3rem;
}

.platform {
    color: var(--text-light);
    font-size: 0.9rem;
    margin: 0;
}

.description {
    color: var(--text-light);
    font-size: 0.9rem;
    line-height: 1.5;
    margin: 0;
}

.btn-download-third {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    gap: 0.5rem;
    padding: 10px 28px;
    background: var(--primary-color);
    color: var(--white);
    border-radius: 50px;
    text-decoration: none;
    font-weight: 600;
    transition: all 0.3s ease;
    white-space: nowrap;
    margin-top: auto;
}

.btn-download-third:hover {
    background: var(--primary-dark);
    transform: translateY(-2px);
    box-shadow: var(--shadow);
}

.btn-icon-svg {
    width: 18px;
    height: 18px;
    fill: currentColor;
    flex-shrink: 0;
}

/* 下载帮助 */
.download-help-section {
    background: var(--bg-light);
}

.help-content {
    max-width: 900px;
    margin: 0 auto;
    text-align: center;
}

.help-content h2 {
    font-size: 2rem;
    margin-bottom: 2rem;
    color: var(--primary-color);
}

.help-steps {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(180px, 1fr));
    gap: 2rem;
    margin-bottom: 2rem;
}

.help-step {
    background: var(--white);
    padding: 2rem 1.5rem;
    border-radius: 10px;
    box-shadow: var(--shadow);
}

.help-step .step-number {
    width: 50px;
    height: 50px;
    background: var(--primary-color);
    color: var(--white);
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 1.5rem;
    font-weight: bold;
    margin: 0 auto 1rem;
}

.help-step h3 {
    margin-bottom: 0.5rem;
    color: var(--text-dark);
}

.help-step p {
    color: var(--text-light);
    font-size: 0.9rem;
}

.help-contact {
    padding: 1.5rem;
    background: var(--white);
    border-radius: 10px;
    color: var(--text-dark);
}

.help-contact a {
    color: var(--primary-color);
    text-decoration: none;
    font-weight: 600;
}

.help-contact a:hover {
    text-decoration: underline;
}

/* 响应式补充 */
@media (max-width: 768px) {
    .form-row {
        grid-template-columns: 1fr;
    }
    
    .app-download-cards {
        grid-template-columns: 1fr;
        gap: 1.5rem;
    }
    
    .app-icon-svg {
        width: 60px;
        height: 60px;
    }
    
    .btn-download-app {
        padding: 12px 32px;
        font-size: 0.95rem;
    }
    
    .third-party-grid {
        grid-template-columns: 1fr;
        gap: 1.5rem;
    }
    
    .third-party-card {
        min-height: auto;
        padding: 1.8rem;
    }
    
    .third-party-icon-svg {
        width: 56px;
        height: 56px;
    }
    
    .implementation-steps {
        flex-direction: column;
    }
    
    .step-arrow {
        transform: rotate(90deg);
    }
    
    .highlights-grid {
        grid-template-columns: 1fr;
    }
    
    .participate-actions {
        flex-direction: column;
    }
    
    .form-actions {
        flex-direction: column;
    }
}

@media (max-width: 480px) {
    .app-download-card {
        padding: 1.5rem;
    }
    
    .app-icon-svg {
        width: 50px;
        height: 50px;
    }
    
    .btn-download-app {
        width: 100%;
        padding: 12px 24px;
    }
    
    .third-party-card {
        padding: 1.5rem;
    }
    
    .third-party-icon-svg {
        width: 48px;
        height: 48px;
    }
    
    .btn-download-third {
        width: 100%;
        padding: 10px 20px;
    }
}