/* about.css - 关于页面专用样式 */

/* 关于页面英雄区域 */
.about-hero {
    background: linear-gradient(135deg, #667eea 0%, #764ba2 100%);
    color: var(--white);
    padding: 5rem 0;
    text-align: center;
}

.about-hero h1 {
    font-size: 3.5rem;
    margin-bottom: 1rem;
    color: var(--white);
}

.hero-subtitle {
    font-size: 1.25rem;
    margin-bottom: 3rem;
    opacity: 0.9;
}

/* 公司简介 */
.company-intro {
    padding: 5rem 0;
    background: var(--white);
}

.intro-content {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 4rem;
    align-items: center;
}

.intro-text h2 {
    margin-bottom: 1.5rem;
    font-size: 2rem;
}

.intro-text p {
    margin-bottom: 2.5rem;
    color: var(--gray-1);
    line-height: 1.8;
}

.values-grid {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 2rem;
    margin-top: 3rem;
}

.value-item {
    text-align: center;
    padding: 2rem;
    background: var(--light-1);
    border-radius: var(--radius-lg);
    transition: transform 0.3s ease;
}

.value-item:hover {
    transform: translateY(-5px);
}

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

.value-item h3 {
    margin-bottom: 0.75rem;
    font-size: 1.25rem;
}

.intro-image {
    border-radius: var(--radius-xl);
    overflow: hidden;
    box-shadow: var(--shadow-lg);
}

.intro-image img {
    width: 100%;
    height: auto;
    display: block;
}

/* 发展历程 */
.timeline-section {
    padding: 5rem 0;
    background: var(--light-2);
}

.timeline {
    position: relative;
    max-width: 800px;
    margin: 3rem auto 0;
    padding-left: 2rem;
}

.timeline::before {
    content: '';
    position: absolute;
    left: 30px;
    top: 0;
    bottom: 0;
    width: 2px;
    background: var(--primary-blue);
}

.timeline-item {
    position: relative;
    margin-bottom: 3rem;
    padding-left: 4rem;
}

.timeline-date {
    position: absolute;
    left: -110px;
    top: 0;
    background: var(--primary-blue);
    color: var(--white);
    padding: 0.5rem 1rem;
    border-radius: var(--radius-md);
    font-weight: 600;
    white-space: nowrap;
}

.timeline-content {
    background: var(--white);
    padding: 1.5rem;
    border-radius: var(--radius-lg);
    box-shadow: var(--shadow-md);
    border-left: 4px solid var(--primary-blue);
}

.timeline-content h3 {
    margin-bottom: 0.5rem;
    color: var(--dark-1);
}

/* 团队介绍 */
.team-section {
    padding: 5rem 0;
    background: var(--white);
}

.team-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(280px, 1fr));
    gap: 2rem;
    margin: 3rem 0;
}

.team-member {
    background: var(--white);
    border-radius: var(--radius-xl);
    overflow: hidden;
    box-shadow: var(--shadow-md);
    transition: transform 0.3s ease;
}

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

.member-avatar {
    height: 200px;
    overflow: hidden;
}

.member-avatar img {
    width: 100%;
    height: 100%;
    object-fit: cover;
    transition: transform 0.5s ease;
}

.team-member:hover .member-avatar img {
    transform: scale(1.05);
}

.member-info {
    padding: 1.5rem;
}

.member-info h3 {
    margin-bottom: 0.25rem;
    font-size: 1.25rem;
}

.member-role {
    color: var(--primary-blue);
    font-weight: 600;
    margin-bottom: 0.75rem;
}

.member-bio {
    color: var(--gray-1);
    font-size: 0.9375rem;
    line-height: 1.6;
    margin-bottom: 1rem;
}

.member-links {
    display: flex;
    gap: 1rem;
}

.member-link {
    color: var(--gray-2);
    font-size: 0.875rem;
    text-decoration: none;
    transition: color 0.3s ease;
}

.member-link:hover {
    color: var(--primary-blue);
}

.team-stats {
    display: flex;
    justify-content: center;
    gap: 4rem;
    margin-top: 3rem;
}

.team-stat {
    text-align: center;
}

.team-stat .stat-number {
    display: block;
    font-size: 2.5rem;
    font-weight: 700;
    color: var(--primary-blue);
}

.team-stat .stat-label {
    color: var(--gray-1);
    font-size: 0.875rem;
}

/* 安全理念 */
.security-section {
    padding: 5rem 0;
    background: var(--light-2);
}

.security-features {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(250px, 1fr));
    gap: 2rem;
    margin: 3rem 0;
}

.security-feature {
    text-align: center;
    padding: 2rem;
    background: var(--white);
    border-radius: var(--radius-lg);
    box-shadow: var(--shadow-md);
}

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

.security-feature h3 {
    margin-bottom: 0.75rem;
    font-size: 1.25rem;
}

.security-certifications {
    text-align: center;
    margin-top: 4rem;
}

.certifications-list {
    display: flex;
    justify-content: center;
    gap: 2rem;
    margin-top: 2rem;
    flex-wrap: wrap;
}

.certification {
    display: flex;
    flex-direction: column;
    align-items: center;
    padding: 1.5rem;
    background: var(--white);
    border-radius: var(--radius-lg);
    box-shadow: var(--shadow-md);
    min-width: 150px;
}

.cert-logo {
    font-size: 2.5rem;
    margin-bottom: 0.5rem;
}

/* 合作伙伴 */
.partners-section {
    padding: 5rem 0;
    background: var(--white);
}

.partners-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(200px, 1fr));
    gap: 2rem;
    margin: 3rem 0;
}

.partner-logo {
    display: flex;
    flex-direction: column;
    align-items: center;
    padding: 2rem;
    background: var(--light-1);
    border-radius: var(--radius-lg);
    transition: transform 0.3s ease;
}

.partner-logo:hover {
    transform: translateY(-5px);
}

.logo-placeholder {
    width: 80px;
    height: 80px;
    background: var(--primary-gradient);
    color: var(--white);
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 1.5rem;
    font-weight: 700;
    border-radius: var(--radius-md);
    margin-bottom: 1rem;
}

/* 联系我们 */
.contact-section {
    padding: 5rem 0;
    background: var(--light-2);
}

.contact-content {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 4rem;
    margin: 3rem 0;
}

.contact-method {
    display: flex;
    gap: 1.5rem;
    margin-bottom: 2rem;
    align-items: flex-start;
}

.method-icon {
    font-size: 2rem;
    color: var(--primary-blue);
}

.method-details h4 {
    margin-bottom: 0.5rem;
    font-size: 1.125rem;
}

.method-details a {
    display: block;
    color: var(--dark-1);
    text-decoration: none;
    font-weight: 600;
    margin-bottom: 0.25rem;
}

.method-details p {
    color: var(--gray-1);
    font-size: 0.875rem;
}

.contact-form {
    background: var(--white);
    padding: 2rem;
    border-radius: var(--radius-lg);
    box-shadow: var(--shadow-md);
}

.contact-form h3 {
    margin-bottom: 1.5rem;
    font-size: 1.5rem;
}

.form-group {
    margin-bottom: 1.5rem;
}

.form-group label {
    display: block;
    margin-bottom: 0.5rem;
    font-weight: 500;
    color: var(--dark-1);
}

.form-group input,
.form-group select,
.form-group textarea {
    width: 100%;
    padding: 0.75rem;
    border: 1px solid var(--gray-4);
    border-radius: var(--radius-md);
    font-family: inherit;
    font-size: 1rem;
    transition: border-color 0.3s ease;
}

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

.form-group textarea {
    resize: vertical;
}

.contact-form .btn {
    width: 100%;
}

.social-links {
    text-align: center;
    margin-top: 4rem;
}

.social-icons {
    display: flex;
    justify-content: center;
    gap: 1.5rem;
    margin-top: 1.5rem;
    flex-wrap: wrap;
}

.social-icon {
    padding: 0.75rem 1.5rem;
    background: var(--white);
    color: var(--dark-1);
    border-radius: var(--radius-full);
    text-decoration: none;
    font-weight: 500;
    transition: all 0.3s ease;
    border: 1px solid var(--gray-4);
}

.social-icon:hover {
    background: var(--primary-blue);
    color: var(--white);
    border-color: var(--primary-blue);
}

/* 响应式设计 */
@media (max-width: 992px) {
    .intro-content {
        grid-template-columns: 1fr;
        gap: 3rem;
    }
    
    .contact-content {
        grid-template-columns: 1fr;
        gap: 3rem;
    }
    
    .timeline-date {
        position: static;
        display: inline-block;
        margin-bottom: 1rem;
    }
    
    .timeline::before {
        left: 20px;
    }
    
    .timeline-item {
        padding-left: 3rem;
    }
}

@media (max-width: 768px) {
    .about-hero h1 {
        font-size: 2.5rem;
    }
    
    .values-grid {
        grid-template-columns: 1fr;
    }
    
    .team-stats {
        flex-direction: column;
        gap: 2rem;
    }
    
    .partners-grid {
        grid-template-columns: repeat(2, 1fr);
    }
}

/* tutorial.css - 教程页面专用样式 */

/* 教程页面英雄区域 */
.tutorial-hero {
    background: linear-gradient(135deg, #4f46e5 0%, #7c3aed 100%);
    color: var(--white);
    padding: 4rem 0;
    text-align: center;
}

.tutorial-hero h1 {
    font-size: 3rem;
    margin-bottom: 1rem;
    color: var(--white);
}

.tutorial-hero p {
    font-size: 1.25rem;
    margin-bottom: 2rem;
    opacity: 0.9;
}

/* 教程目录 */
.tutorial-toc {
    padding: 3rem 0;
    background: var(--light-2);
}

.tutorial-toc .container {
    display: grid;
    grid-template-columns: 300px 1fr;
    gap: 3rem;
}

.toc-sidebar {
    position: sticky;
    top: 120px;
    height: fit-content;
    background: var(--white);
    padding: 2rem;
    border-radius: var(--radius-xl);
    box-shadow: var(--shadow-md);
}

.toc-sidebar h3 {
    margin-bottom: 1.5rem;
    font-size: 1.25rem;
    color: var(--dark-1);
}

.toc-nav {
    list-style: none;
    margin-bottom: 2rem;
}

.toc-nav li {
    margin-bottom: 0.5rem;
}

.toc-link {
    display: block;
    padding: 0.75rem 1rem;
    color: var(--gray-1);
    text-decoration: none;
    border-radius: var(--radius-md);
    transition: all 0.3s ease;
    border-left: 3px solid transparent;
}

.toc-link:hover,
.toc-link.active {
    background: var(--light-1);
    color: var(--primary-blue);
    border-left-color: var(--primary-blue);
}

.quick-download {
    background: var(--light-1);
    padding: 1.5rem;
    border-radius: var(--radius-lg);
    text-align: center;
    border: 2px dashed var(--gray-3);
}

.quick-download h4 {
    margin-bottom: 1rem;
    color: var(--dark-1);
}

/* 教程内容 */
.tutorial-content {
    background: var(--white);
    padding: 0;
}

.tutorial-section {
    margin-bottom: 4rem;
}

.tutorial-section h2 {
    display: flex;
    align-items: center;
    gap: 1rem;
    margin-bottom: 2rem;
    padding-bottom: 1rem;
    border-bottom: 2px solid var(--gray-4);
}

.section-number {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    width: 40px;
    height: 40px;
    background: var(--primary-gradient);
    color: var(--white);
    border-radius: var(--radius-full);
    font-weight: 700;
    font-size: 1.25rem;
}

.tutorial-card {
    background: var(--white);
    border-radius: var(--radius-xl);
    overflow: hidden;
    box-shadow: var(--shadow-md);
    border: 1px solid var(--gray-4);
    margin-bottom: 2rem;
}

.tutorial-header {
    display: flex;
    justify-content: space-between;
    align-items: center;
    padding: 1.5rem 2rem;
    background: var(--light-1);
    border-bottom: 1px solid var(--gray-4);
}

.tutorial-header h3 {
    margin: 0;
    font-size: 1.25rem;
}

.difficulty {
    padding: 0.25rem 0.75rem;
    border-radius: var(--radius-full);
    font-size: 0.75rem;
    font-weight: 600;
    text-transform: uppercase;
}

.difficulty.beginner {
    background: #10b98120;
    color: var(--success);
}

.difficulty.intermediate {
    background: #f59e0b20;
    color: var(--warning);
}

.difficulty.advanced {
    background: #ef444420;
    color: var(--danger);
}

.tutorial-body {
    padding: 2rem;
}

.step-by-step {
    display: flex;
    flex-direction: column;
    gap: 2rem;
    margin: 2rem 0;
}

.step {
    display: flex;
    gap: 1.5rem;
    align-items: flex-start;
}

.step-number {
    flex-shrink: 0;
    width: 32px;
    height: 32px;
    background: var(--primary-blue);
    color: var(--white);
    border-radius: var(--radius-full);
    display: flex;
    align-items: center;
    justify-content: center;
    font-weight: 700;
    font-size: 0.875rem;
}

.step-content {
    flex: 1;
}

.step-content h4 {
    margin-bottom: 0.5rem;
    font-size: 1.125rem;
}

.step-image {
    margin-top: 1rem;
    border-radius: var(--radius-lg);
    overflow: hidden;
    box-shadow: var(--shadow-md);
}

.step-image img {
    width: 100%;
    height: auto;
    display: block;
}

.tips {
    background: #f0f9ff;
    border-left: 4px solid var(--info);
    padding: 1rem;
    border-radius: var(--radius-md);
    margin-top: 1rem;
}

.tips strong {
    color: var(--info);
}

.warning-box {
    background: #fef2f2;
    border: 2px solid var(--danger);
    padding: 1rem 1.5rem;
    border-radius: var(--radius-lg);
    margin: 1.5rem 0;
}

.warning-box strong {
    color: var(--danger);
}

.important-note {
    background: #fffbeb;
    border: 2px solid var(--warning);
    padding: 1.5rem;
    border-radius: var(--radius-lg);
    margin: 1.5rem 0;
}

.important-note strong {
    color: var(--warning);
    display: block;
    margin-bottom: 0.5rem;
}

.important-note ul {
    list-style: none;
    padding-left: 1rem;
}

.important-note li {
    position: relative;
    padding-left: 1.5rem;
    margin-bottom: 0.25rem;
}

.important-note li::before {
    content: '⚠️';
    position: absolute;
    left: 0;
}

.code-example {
    background: var(--dark-1);
    color: var(--gray-3);
    padding: 1.5rem;
    border-radius: var(--radius-lg);
    margin: 1rem 0;
    overflow-x: auto;
}

.code-example pre {
    margin: 0;
    font-family: 'Monaco', 'Menlo', 'Ubuntu Mono', monospace;
    font-size: 0.875rem;
    line-height: 1.5;
}

.code-example code {
    font-family: inherit;
}

/* 视频教程 */
.video-guide {
    margin: 2rem 0;
}

.video-placeholder {
    background: var(--dark-1);
    height: 200px;
    border-radius: var(--radius-lg);
    display: flex;
    flex-direction: column;
    align-items: center;
    justify-content: center;
    color: var(--white);
    cursor: pointer;
    transition: background-color 0.3s ease;
}

.video-placeholder:hover {
    background: var(--dark-2);
}

.play-button {
    font-size: 3rem;
    margin-bottom: 1rem;
}

/* 网络支持 */
.network-grid {
    display: grid;
    grid-template-columns: repeat(auto-fill, minmax(120px, 1fr));
    gap: 1rem;
    margin: 1.5rem 0;
}

.network-item {
    display: flex;
    flex-direction: column;
    align-items: center;
    padding: 1rem;
    background: var(--light-1);
    border-radius: var(--radius-lg);
    transition: transform 0.3s ease;
}

.network-item:hover {
    transform: translateY(-3px);
}

.network-logo {
    width: 50px;
    height: 50px;
    background: var(--primary-gradient);
    color: var(--white);
    border-radius: var(--radius-full);
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 1.5rem;
    font-weight: 700;
    margin-bottom: 0.5rem;
}

/* 安全清单 */
.security-checklist {
    background: var(--light-1);
    padding: 1.5rem;
    border-radius: var(--radius-lg);
    margin: 1.5rem 0;
}

.checklist-item {
    display: flex;
    align-items: center;
    margin-bottom: 0.75rem;
}

.checklist-item input {
    margin-right: 1rem;
}

.checklist-item label {
    cursor: pointer;
    color: var(--dark-2);
}

.security-tips {
    margin: 2rem 0;
}

.tip-item {
    display: flex;
    gap: 1rem;
    margin-bottom: 1.5rem;
    padding: 1.5rem;
    background: var(--white);
    border-radius: var(--radius-lg);
    box-shadow: var(--shadow-sm);
    border: 1px solid var(--gray-4);
}

.tip-icon {
    font-size: 2rem;
    flex-shrink: 0;
}

.tip-content strong {
    display: block;
    margin-bottom: 0.5rem;
    color: var(--dark-1);
}

.tip-content p {
    color: var(--gray-1);
    margin: 0;
    font-size: 0.9375rem;
}

/* 标签式内容 */
.tabbed-content {
    margin: 1.5rem 0;
}

.tabs {
    display: flex;
    border-bottom: 2px solid var(--gray-4);
    margin-bottom: 1.5rem;
}

.tab-btn {
    padding: 0.75rem 1.5rem;
    background: none;
    border: none;
    border-bottom: 3px solid transparent;
    font-weight: 500;
    color: var(--gray-1);
    cursor: pointer;
    transition: all 0.3s ease;
}

.tab-btn:hover,
.tab-btn.active {
    color: var(--primary-blue);
    border-bottom-color: var(--primary-blue);
}

.tab-content {
    display: none;
    animation: fadeIn 0.3s ease;
}

.tab-content.active {
    display: block;
}

.address-qr-example {
    display: flex;
    gap: 2rem;
    align-items: center;
    margin-top: 1.5rem;
}

.qr-placeholder {
    width: 150px;
    height: 150px;
    background: var(--white);
    border: 2px solid var(--gray-3);
    border-radius: var(--radius-lg);
    display: flex;
    align-items: center;
    justify-content: center;
}

.qr-pattern {
    width: 80%;
    height: 80%;
    background: repeating-linear-gradient(
        0deg,
        var(--dark-1),
        var(--dark-1) 2px,
        transparent 2px,
        transparent 4px
    );
}

.address-example {
    flex: 1;
}

.address-example code {
    display: block;
    background: var(--light-1);
    padding: 1rem;
    border-radius: var(--radius-lg);
    margin-bottom: 1rem;
    word-break: break-all;
    font-family: monospace;
}

.copy-btn {
    padding: 0.5rem 1rem;
    background: var(--primary-blue);
    color: var(--white);
    border: none;
    border-radius: var(--radius-md);
    cursor: pointer;
    transition: background 0.3s ease;
}

.copy-btn:hover {
    background: var(--primary-dark);
}

/* 常见问题 */
.faq-section {
    padding: 4rem 0;
    background: var(--light-2);
}

.faq-grid {
    max-width: 800px;
    margin: 0 auto;
}

.faq-item {
    background: var(--white);
    border-radius: var(--radius-lg);
    margin-bottom: 1rem;
    overflow: hidden;
    box-shadow: var(--shadow-sm);
    border: 1px solid var(--gray-4);
}

.faq-question {
    display: flex;
    justify-content: space-between;
    align-items: center;
    padding: 1.5rem;
    cursor: pointer;
}

.faq-question h3 {
    margin: 0;
    font-size: 1.125rem;
    color: var(--dark-1);
}

.faq-toggle {
    font-size: 1.5rem;
    color: var(--gray-2);
    transition: transform 0.3s ease;
}

.faq-answer {
    padding: 0 1.5rem;
    max-height: 0;
    overflow: hidden;
    transition: max-height 0.3s ease, padding 0.3s ease;
}

.faq-item.active .faq-answer {
    padding: 0 1.5rem 1.5rem;
    max-height: 500px;
}

.faq-item.active .faq-toggle {
    transform: rotate(45deg);
}

/* 技术支持 */
.support-section {
    padding: 4rem 0;
    background: var(--white);
    text-align: center;
}

.support-content h2 {
    margin-bottom: 1rem;
}

.support-content p {
    color: var(--gray-1);
    margin-bottom: 3rem;
}

.support-options {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(250px, 1fr));
    gap: 2rem;
    max-width: 900px;
    margin: 0 auto;
}

.support-option {
    display: block;
    padding: 2rem;
    background: var(--light-1);
    border-radius: var(--radius-xl);
    text-decoration: none;
    color: inherit;
    transition: transform 0.3s ease, box-shadow 0.3s ease;
    border: 2px solid transparent;
}

.support-option:hover {
    transform: translateY(-5px);
    box-shadow: var(--shadow-lg);
    border-color: var(--primary-blue);
}

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

.support-option h4 {
    margin-bottom: 0.5rem;
    color: var(--dark-1);
}

.support-option p {
    color: var(--gray-1);
    margin-bottom: 0.5rem;
}

.option-note {
    font-size: 0.875rem;
    color: var(--primary-blue);
    font-weight: 500;
}

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

/* 响应式设计 */
@media (max-width: 992px) {
    .tutorial-toc .container {
        grid-template-columns: 1fr;
    }
    
    .toc-sidebar {
        position: static;
        order: 2;
    }
    
    .quick-download {
        display: none;
    }
    
    .address-qr-example {
        flex-direction: column;
        text-align: center;
    }
}

@media (max-width: 768px) {
    .tutorial-hero h1 {
        font-size: 2.5rem;
    }
    
    .tutorial-section h2 {
        font-size: 1.75rem;
    }
    
    .step {
        flex-direction: column;
    }
    
    .step-number {
        align-self: flex-start;
    }
    
    .support-options {
        grid-template-columns: 1fr;
    }
}