/* 重置样式 */
* {
    margin: 0;
    padding: 0;
    box-sizing: border-box;
}

body {
    font-family: 'PingFang SC', -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, sans-serif;
    line-height: 1.6;
    color: #2d3748;
    background: #f7fafc;
    overflow-x: hidden;
}

/* 侧边导航栏 */
.sidebar-nav {
    position: fixed;
    left: 0;
    top: 0;
    width: 280px;
    height: 100vh;
    background: linear-gradient(180deg, #667eea 0%, #764ba2 100%);
    z-index: 1000;
    display: flex;
    flex-direction: column;
    padding: 30px 0;
    box-shadow: 4px 0 20px rgba(0,0,0,0.1);
}

.nav-brand {
    display: flex;
    align-items: center;
    padding: 0 30px;
    margin-bottom: 50px;
}

.brand-icon {
    width: 50px;
    height: 50px;
    background: rgba(255,255,255,0.2);
    border-radius: 15px;
    display: flex;
    align-items: center;
    justify-content: center;
    margin-right: 15px;
}

.brand-icon i {
    font-size: 24px;
    color: white;
}

.brand-text {
    font-size: 24px;
    font-weight: 700;
    color: white;
}

.nav-list {
    list-style: none;
    flex: 1;
}

.nav-item {
    display: flex;
    align-items: center;
    padding: 20px 30px;
    color: rgba(255,255,255,0.8);
    text-decoration: none;
    transition: all 0.3s;
    border-left: 4px solid transparent;
}

.nav-item:hover,
.nav-item.active {
    background: rgba(255,255,255,0.1);
    color: white;
    border-left-color: #ffd700;
}

.nav-item i {
    font-size: 20px;
    margin-right: 15px;
    width: 24px;
}

.nav-item span {
    font-size: 16px;
    font-weight: 500;
}

/* 移动端顶部导航 */
.mobile-header {
    display: none;
    position: fixed;
    top: 0;
    left: 0;
    right: 0;
    background: linear-gradient(135deg, #667eea 0%, #764ba2 100%);
    z-index: 1001;
    padding: 15px 20px;
    box-shadow: 0 2px 10px rgba(0,0,0,0.1);
}

.mobile-nav {
    display: flex;
    justify-content: space-between;
    align-items: center;
}

.mobile-logo {
    display: flex;
    align-items: center;
    color: white;
    font-size: 20px;
    font-weight: 700;
}

.mobile-logo i {
    margin-right: 10px;
    font-size: 24px;
}

.mobile-menu-btn {
    background: none;
    border: none;
    color: white;
    font-size: 24px;
    cursor: pointer;
}

/* 主要内容区域 */
.main-content {
    margin-left: 280px;
    min-height: 100vh;
}

/* 首页横幅 */
.hero-section {
    min-height: 100vh;
    position: relative;
    display: flex;
    align-items: center;
    background: linear-gradient(135deg, #f093fb 0%, #f5576c 100%);
    overflow: hidden;
}

.hero-background {
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    z-index: 1;
}

.floating-elements {
    position: absolute;
    width: 100%;
    height: 100%;
}

.float-item {
    position: absolute;
    border-radius: 50%;
    background: rgba(255,255,255,0.1);
    animation: float 6s ease-in-out infinite;
}

.float-item.item-1 {
    width: 100px;
    height: 100px;
    top: 20%;
    left: 10%;
    animation-delay: 0s;
}

.float-item.item-2 {
    width: 150px;
    height: 150px;
    top: 60%;
    right: 15%;
    animation-delay: 2s;
}

.float-item.item-3 {
    width: 80px;
    height: 80px;
    top: 40%;
    right: 30%;
    animation-delay: 4s;
}

@keyframes float {
    0%, 100% { transform: translateY(0px) rotate(0deg); }
    50% { transform: translateY(-20px) rotate(180deg); }
}

.hero-content {
    position: relative;
    z-index: 2;
    max-width: 1200px;
    margin: 0 auto;
    padding: 0 40px;
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 80px;
    align-items: center;
}

.hero-left {
    color: white;
}

.hero-badge {
    display: inline-flex;
    align-items: center;
    background: rgba(255,255,255,0.2);
    padding: 10px 20px;
    border-radius: 30px;
    margin-bottom: 30px;
    backdrop-filter: blur(10px);
}

.hero-badge i {
    margin-right: 10px;
    color: #ffd700;
}

.hero-title {
    font-size: 56px;
    font-weight: 800;
    line-height: 1.2;
    margin-bottom: 30px;
}

.gradient-text {
    background: linear-gradient(45deg, #ffd700, #ffed4e);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
}

.hero-description {
    font-size: 20px;
    margin-bottom: 40px;
    opacity: 0.9;
    line-height: 1.6;
}

.hero-stats {
    display: flex;
    gap: 40px;
    margin-bottom: 50px;
}

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

.stat-number {
    font-size: 36px;
    font-weight: 700;
    color: #ffd700;
    display: block;
}

.stat-label {
    font-size: 14px;
    opacity: 0.8;
    margin-top: 5px;
}

.hero-actions {
    display: flex;
    gap: 20px;
}

.primary-btn,
.secondary-btn {
    display: flex;
    align-items: center;
    gap: 10px;
    padding: 18px 35px;
    border-radius: 50px;
    font-size: 16px;
    font-weight: 600;
    cursor: pointer;
    transition: all 0.3s;
    border: none;
    text-decoration: none;
}

.primary-btn {
    background: #ffd700;
    color: #2d3748;
    box-shadow: 0 4px 15px rgba(255, 215, 0, 0.3);
}

.primary-btn:hover {
    transform: translateY(-2px);
    box-shadow: 0 6px 20px rgba(255, 215, 0, 0.4);
}

.secondary-btn {
    background: rgba(255,255,255,0.2);
    color: white;
    border: 2px solid rgba(255,255,255,0.3);
    backdrop-filter: blur(10px);
}

.secondary-btn:hover {
    background: rgba(255,255,255,0.3);
    transform: translateY(-2px);
}

/* 手机模拟器 */
.hero-visual {
    display: flex;
    justify-content: center;
    align-items: center;
}

.phone-mockup {
    width: 300px;
    height: 600px;
    background: #1a202c;
    border-radius: 40px;
    padding: 20px;
    box-shadow: 0 20px 40px rgba(0,0,0,0.3);
    position: relative;
}

.phone-mockup::before {
    content: '';
    position: absolute;
    top: 10px;
    left: 50%;
    transform: translateX(-50%);
    width: 60px;
    height: 4px;
    background: #4a5568;
    border-radius: 2px;
}

.phone-screen {
    width: 100%;
    height: 100%;
    background: white;
    border-radius: 25px;
    overflow: hidden;
    position: relative;
}

.app-interface {
    padding: 30px 20px;
    height: 100%;
    display: flex;
    flex-direction: column;
}

.app-header {
    text-align: center;
    margin-bottom: 40px;
}

.app-title {
    font-size: 24px;
    font-weight: 700;
    color: #2d3748;
}

.app-content {
    flex: 1;
    display: flex;
    align-items: center;
    justify-content: center;
}

.transfer-card {
    background: linear-gradient(135deg, #667eea 0%, #764ba2 100%);
    padding: 30px;
    border-radius: 20px;
    color: white;
    text-align: center;
    width: 100%;
}

.from-account,
.to-account {
    display: flex;
    align-items: center;
    justify-content: center;
    gap: 10px;
    margin: 15px 0;
}

.from-account i,
.to-account i {
    font-size: 24px;
}

.transfer-arrow {
    margin: 20px 0;
}

.transfer-arrow i {
    font-size: 20px;
    color: #ffd700;
}

/* 章节标题 */
.section-title {
    font-size: 42px;
    font-weight: 700;
    color: #2d3748;
    margin-bottom: 20px;
    text-align: center;
}

.section-subtitle {
    font-size: 18px;
    color: #718096;
    text-align: center;
    margin-bottom: 60px;
}

.section-header {
    text-align: center;
    margin-bottom: 80px;
}

/* 服务特色 */
.features-section {
    padding: 120px 0;
    background: white;
}

.features-container {
    max-width: 1200px;
    margin: 0 auto;
    padding: 0 40px;
}

.feature-row {
    display: grid;
    grid-template-columns: 2fr 1fr;
    gap: 30px;
    margin-bottom: 30px;
}

.feature-row:last-child {
    grid-template-columns: 1fr 1fr 1fr;
    margin-bottom: 0;
}

.feature-card {
    background: white;
    padding: 40px 30px;
    border-radius: 20px;
    box-shadow: 0 10px 30px rgba(0,0,0,0.1);
    transition: all 0.3s;
    border: 1px solid #e2e8f0;
    position: relative;
    overflow: hidden;
}

.feature-card::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    height: 4px;
    background: linear-gradient(90deg, #667eea 0%, #764ba2 100%);
}

.feature-card:hover {
    transform: translateY(-10px);
    box-shadow: 0 20px 40px rgba(0,0,0,0.15);
}

.feature-card.large {
    background: linear-gradient(135deg, #667eea 0%, #764ba2 100%);
    color: white;
}

.feature-card.large::before {
    background: #ffd700;
}

.feature-icon {
    width: 70px;
    height: 70px;
    background: linear-gradient(135deg, #667eea 0%, #764ba2 100%);
    border-radius: 20px;
    display: flex;
    align-items: center;
    justify-content: center;
    margin-bottom: 25px;
}

.feature-card.large .feature-icon {
    background: rgba(255,255,255,0.2);
}

.feature-icon i {
    font-size: 28px;
    color: white;
}

.feature-card h3 {
    font-size: 24px;
    font-weight: 600;
    margin-bottom: 15px;
    color: #2d3748;
}

.feature-card.large h3 {
    color: white;
}

.feature-card p {
    font-size: 16px;
    color: #718096;
    line-height: 1.6;
}

.feature-card.large p {
    color: rgba(255,255,255,0.9);
}

.feature-highlight {
    background: #ffd700;
    color: #2d3748;
    padding: 8px 16px;
    border-radius: 20px;
    font-size: 14px;
    font-weight: 600;
    display: inline-block;
    margin-top: 15px;
}

/* 操作指南 */
.process-section {
    padding: 120px 0;
    background: linear-gradient(135deg, #f093fb 0%, #f5576c 100%);
    color: white;
}

.process-container {
    max-width: 1200px;
    margin: 0 auto;
    padding: 0 40px;
}

.process-header {
    text-align: center;
    margin-bottom: 80px;
}

.process-header .section-title,
.process-header .section-subtitle {
    color: white;
}

.process-timeline {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: 40px;
}

.timeline-item {
    text-align: center;
    position: relative;
}

.timeline-item:not(:last-child)::after {
    content: '';
    position: absolute;
    top: 40px;
    right: -20px;
    width: 40px;
    height: 2px;
    background: rgba(255,255,255,0.3);
}

.timeline-icon {
    width: 80px;
    height: 80px;
    background: rgba(255,255,255,0.2);
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    margin: 0 auto 30px;
    backdrop-filter: blur(10px);
}

.timeline-icon i {
    font-size: 32px;
    color: white;
}

.timeline-content h3 {
    font-size: 24px;
    font-weight: 600;
    margin-bottom: 15px;
    color: white;
}

.timeline-content p {
    font-size: 16px;
    color: rgba(255,255,255,0.9);
    line-height: 1.6;
}

/* 用户评价 */
.reviews-section {
    padding: 120px 0;
    background: white;
}

.reviews-container {
    max-width: 1200px;
    margin: 0 auto;
    padding: 0 40px;
}

.reviews-header {
    text-align: center;
    margin-bottom: 80px;
}

.reviews-slider {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: 40px;
}

.review-item {
    background: white;
    padding: 40px 30px;
    border-radius: 20px;
    box-shadow: 0 10px 30px rgba(0,0,0,0.1);
    border: 1px solid #e2e8f0;
    transition: all 0.3s;
}

.review-item:hover {
    transform: translateY(-5px);
    box-shadow: 0 20px 40px rgba(0,0,0,0.15);
}

.review-rating {
    display: flex;
    gap: 5px;
    margin-bottom: 20px;
}

.review-rating i {
    color: #ffd700;
    font-size: 16px;
}

.review-text {
    font-size: 16px;
    color: #4a5568;
    line-height: 1.6;
    margin-bottom: 25px;
    font-style: italic;
}

.review-author {
    display: flex;
    align-items: center;
    gap: 15px;
}

.author-avatar {
    width: 50px;
    height: 50px;
    background: linear-gradient(135deg, #667eea 0%, #764ba2 100%);
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    color: white;
    font-size: 20px;
}

.author-name {
    font-weight: 600;
    color: #2d3748;
    font-size: 16px;
}

.author-role {
    color: #718096;
    font-size: 14px;
}

/* 联系我们 */
.contact-section {
    padding: 120px 0;
    background: #f7fafc;
}

.contact-container {
    max-width: 1200px;
    margin: 0 auto;
    padding: 0 40px;
}

.contact-content {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 80px;
    align-items: center;
}

.contact-methods {
    margin-top: 40px;
}

.contact-method {
    display: flex;
    align-items: center;
    gap: 20px;
    margin-bottom: 30px;
    padding: 20px;
    background: white;
    border-radius: 15px;
    box-shadow: 0 5px 15px rgba(0,0,0,0.08);
    transition: all 0.3s;
}

.contact-method:hover {
    transform: translateX(10px);
    box-shadow: 0 10px 25px rgba(0,0,0,0.12);
}

.method-icon {
    width: 60px;
    height: 60px;
    background: linear-gradient(135deg, #667eea 0%, #764ba2 100%);
    border-radius: 15px;
    display: flex;
    align-items: center;
    justify-content: center;
    color: white;
    font-size: 24px;
}

.method-info h4 {
    font-size: 18px;
    font-weight: 600;
    color: #2d3748;
    margin-bottom: 5px;
}

.method-info p {
    font-size: 16px;
    color: #718096;
}

.contact-stats {
    display: grid;
    grid-template-columns: repeat(2, 1fr);
    gap: 30px;
}

.contact-stats .stat-item {
    text-align: center;
    padding: 30px 20px;
    background: white;
    border-radius: 20px;
    box-shadow: 0 10px 30px rgba(0,0,0,0.1);
}

.contact-stats .stat-number {
    font-size: 36px;
    font-weight: 700;
    color: #667eea;
    margin-bottom: 10px;
}

.contact-stats .stat-label {
    font-size: 16px;
    color: #718096;
    font-weight: 500;
}

/* 底部行动号召 */
.cta-section {
    padding: 120px 0;
    background: linear-gradient(135deg, #667eea 0%, #764ba2 100%);
    color: white;
    text-align: center;
}

.cta-container {
    max-width: 800px;
    margin: 0 auto;
    padding: 0 40px;
}

.cta-title {
    font-size: 48px;
    font-weight: 700;
    margin-bottom: 20px;
    color: white;
}

.cta-subtitle {
    font-size: 20px;
    margin-bottom: 50px;
    opacity: 0.9;
}

.cta-actions {
    display: flex;
    gap: 20px;
    justify-content: center;
}

.primary-btn.large,
.secondary-btn.large {
    padding: 20px 40px;
    font-size: 18px;
}

.secondary-btn.large {
    background: rgba(255,255,255,0.2);
    color: white;
    border: 2px solid rgba(255,255,255,0.3);
}

/* 手机端底部横幅 */
.mobile-banner {
    display: none;
    position: fixed;
    bottom: 0;
    left: 0;
    right: 0;
    background: linear-gradient(135deg, #7c3aed 0%, #5b21b6 100%);
    padding: 15px 20px;
    z-index: 1000;
    box-shadow: 0 -2px 10px rgba(0,0,0,0.1);
}

.banner-content {
    display: flex;
    justify-content: space-between;
    align-items: center;
    max-width: 1200px;
    margin: 0 auto;
}

.banner-left {
    display: flex;
    align-items: center;
    gap: 10px;
    color: white;
    font-size: 16px;
    font-weight: 500;
}

.banner-left i {
    font-size: 18px;
}

.banner-button {
    background: rgba(255, 255, 255, 0.2);
    color: white;
    padding: 10px 20px;
    border-radius: 25px;
    text-decoration: none;
    font-weight: 500;
    transition: background 0.3s;
}

.banner-button:hover {
    background: rgba(255, 255, 255, 0.3);
}

/* 页脚 */
.footer {
    background: #2d3748;
    color: white;
    padding: 30px 0;
    text-align: center;
}

.copyright {
    font-size: 14px;
    color: #a0aec0;
}

.icp-link {
    color: #a0aec0;
    text-decoration: none;
    margin-left: 5px;
}

.icp-link:hover {
    color: #e2e8f0;
}

/* 响应式设计 */
@media (max-width: 1024px) {
    .sidebar-nav {
        width: 250px;
    }
    
    .main-content {
        margin-left: 250px;
    }
    
    .hero-content {
        gap: 60px;
    }
    
    .hero-title {
        font-size: 48px;
    }
    
    .feature-row {
        grid-template-columns: 1fr;
    }
    
    .feature-row:last-child {
        grid-template-columns: repeat(2, 1fr);
    }
    
    .process-timeline {
        grid-template-columns: 1fr;
        gap: 60px;
    }
    
    .timeline-item:not(:last-child)::after {
        display: none;
    }
    
    .reviews-slider {
        grid-template-columns: 1fr;
        gap: 30px;
    }
    
    .contact-content {
        grid-template-columns: 1fr;
        gap: 60px;
    }
}

@media (max-width: 768px) {
    .sidebar-nav {
        display: none;
    }
    
    .mobile-header {
        display: block;
    }
    
    .main-content {
        margin-left: 0;
        padding-top: 80px;
    }
    
    .hero-section {
        min-height: auto;
        padding: 60px 0;
    }
    
    .hero-content {
        grid-template-columns: 1fr;
        gap: 40px;
        padding: 0 20px;
    }
    
    .hero-title {
        font-size: 36px;
    }
    
    .hero-description {
        font-size: 16px;
    }
    
    .hero-stats {
        gap: 30px;
    }
    
    .hero-actions {
        flex-direction: column;
        gap: 15px;
    }
    
    .phone-mockup {
        width: 250px;
        height: 500px;
    }
    
    .section-title {
        font-size: 32px;
    }
    
    .features-section,
    .process-section,
    .reviews-section,
    .contact-section,
    .cta-section {
        padding: 80px 0;
    }
    
    .features-container,
    .process-container,
    .reviews-container,
    .contact-container,
    .cta-container {
        padding: 0 20px;
    }
    
    .feature-row:last-child {
        grid-template-columns: 1fr;
    }
    
    .contact-stats {
        grid-template-columns: 1fr;
    }
    
    .cta-actions {
        flex-direction: column;
        align-items: center;
    }
    
    .mobile-banner {
        display: block;
    }
    
    .footer {
        padding-bottom: 80px;
    }
}

@media (max-width: 480px) {
    .hero-title {
        font-size: 28px;
    }
    
    .hero-description {
        font-size: 14px;
    }
    
    .section-title {
        font-size: 24px;
    }
    
    .section-subtitle {
        font-size: 16px;
    }
    
    .feature-card,
    .review-item,
    .contact-method {
        padding: 30px 20px;
    }
    
    .cta-title {
        font-size: 32px;
    }
    
    .cta-subtitle {
        font-size: 16px;
    }
    
    .banner-left {
        font-size: 14px;
    }
    
    .banner-button {
        padding: 8px 16px;
        font-size: 14px;
    }
}