* {
    margin: 0;
    padding: 0;
    box-sizing: border-box;
}

body {
    font-family: -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, 'Noto Sans', 'Microsoft YaHei', Arial, sans-serif;
    background-color: #f8f9fa;
    color: #2d3748;
}

.icon {
    width: 16px;
    height: 16px;
}

/* 主导航栏 */
.main-nav {
    background-color: #ffffff;
    padding: 16px 0;
    box-shadow: 0 1px 3px rgba(0, 0, 0, 0.1);
    position: sticky;
    top: 0;
    z-index: 9999;
}

.main-container {
    max-width: 1200px;
    margin: 0 auto;
    padding: 0 20px;
    display: flex;
    justify-content: space-between;
    align-items: center;
}

.nav-left {
    display: flex;
    align-items: center;
}

.logo {
    display: flex;
    align-items: center;
    gap: 8px;
    text-decoration: none;
    color: #ff5c35;
    font-weight: bold;
    font-size: 24px;
}

.nav-center {
    display: flex;
    align-items: center;
    gap: 32px;
}

.nav-item {
    color: #2d3748;
    text-decoration: none;
    font-weight: 500;
    font-size: 15px;
    padding: 8px 0;
    cursor: pointer;
    transition: all 0.3s ease;
    position: relative;
}

.nav-item:hover {
    color: #ff5c35;
}

.nav-item.active {
    color: #ff5c35;
}

.nav-item.active::after {
    content: '';
    position: absolute;
    bottom: -8px;
    left: 50%;
    transform: translateX(-50%);
    width: 24px;
    height: 2px;
    background-color: #ff5c35;
    border-radius: 1px;
}

.dropdown-arrow {
    font-size: 12px;
    margin-left: 2px;
}

.nav-right {
    display: flex;
    align-items: center;
    gap: 12px;
    position: relative;
    z-index: 10001;
}

/* 按钮样式 */
.btn {
    padding: 12px 20px;
    border-radius: 8px;
    text-decoration: none;
    font-weight: 600;
    font-size: 14px;
    cursor: pointer;
    transition: all 0.3s ease;
    border: none;
    display: inline-flex;
    align-items: center;
    gap: 6px;
}

.btn-primary {
    background: linear-gradient(135deg, #ff5c35, #ff6b3d);
    color: white;
    box-shadow: 0 2px 8px rgba(255, 92, 53, 0.3);
}

.btn-primary:hover {
    background: linear-gradient(135deg, #e04a2a, #e05a2d);
    transform: translateY(-1px);
    box-shadow: 0 4px 12px rgba(255, 92, 53, 0.4);
}

.btn-outline {
    background-color: white;
    color: #4a5568;
    border: 1px solid #cbd5e0;
}

.btn-outline:hover {
    background-color: #f7fafc;
    border-color: #a0aec0;
}

.product-icon {
    color: #ff5c35;
}

/* 主要内容区域 */
.main-content {
    min-height: calc(100vh - 80px);
    overflow: hidden;
}

.page {
    display: none;
    animation: fadeIn 0.5s ease-in-out;
}

.page.active {
    display: block;
}

@keyframes fadeIn {
    from {
        opacity: 0;
        transform: translateY(20px);
    }
    to {
        opacity: 1;
        transform: translateY(0);
    }
}

/* 首页样式 */
.hero-section {
    color: white;
    padding: 80px 0;
    text-align: center;
    position: relative;
    overflow: visible;
    height: 450px;
    background-color: #f8f9fa;
}

.hero-video-background {
    position: absolute;
    top: 50%;
    left: 50%;
    transform: translate(-50%, -50%) scale(0.65);
    width: 100%;
    height: 100%;
    object-fit: cover;
    z-index: 0;
}

.hero-content {
    max-width: 1200px;
    margin: 0 auto;
    padding: 40px;
    position: relative;
    z-index: 1;
}

.hero-title {
    font-size: 48px;
    font-weight: 700;
    margin-bottom: 20px;
    line-height: 1.2;
    text-shadow: 2px 2px 4px rgba(0, 0, 0, 0.8);
    color: #ffffff;
    text-align: center;
}

.hero-subtitle {
    font-size: 20px;
    margin-bottom: 40px;
    opacity: 0.9;
}

.hero-buttons {
    display: flex;
    gap: 24px;
    justify-content: center;
    flex-wrap: wrap;
    margin-top: 275px;
}

.btn-hero {
    padding: 16px 32px;
    border-radius: 50px;
    font-size: 16px;
    font-weight: 600;
    text-decoration: none;
    transition: all 0.3s ease;
    box-shadow: 0 4px 15px rgba(0, 0, 0, 0.2);
}

.btn-hero-primary {
    background-color: white;
    color: #22c55e;
}

.btn-hero-primary:hover {
    background-color: #f7fafc;
    box-shadow: 0 6px 20px rgba(0, 0, 0, 0.3);
    transform: translateY(-2px);
}

.btn-hero-secondary {
    background-color: transparent;
    color: #22c55e;
    border: 2px solid #22c55e;
}

.btn-hero-secondary:hover {
    background-color: #22c55e;
    color: white;
    box-shadow: 0 6px 20px rgba(34, 197, 94, 0.3);
}

.features-section {
    padding: 80px 0;
    background-color: white;
}

.features-container {
    max-width: 1200px;
    margin: 0 auto;
    padding: 0 20px;
}

.section-title {
    font-size: 36px;
    font-weight: 700;
    text-align: center;
    margin-bottom: 60px;
    color: #2d3748;
}

.features-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
    gap: 40px;
}

.feature-card {
    background-color: #ffffff;
    border-radius: 12px;
    padding: 40px 30px;
    text-align: center;
    box-shadow: 0 4px 20px rgba(0, 0, 0, 0.1);
    transition: all 0.3s ease;
    border: 1px solid #e2e8f0;
}

.feature-card:hover {
    transform: translateY(-8px);
    box-shadow: 0 8px 30px rgba(0, 0, 0, 0.15);
}

.feature-icon {
    width: 64px;
    height: 64px;
    margin: 0 auto 24px;
    background: linear-gradient(135deg, #ff5c35, #ff6b3d);
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 28px;
}

.feature-title {
    font-size: 24px;
    font-weight: 600;
    margin-bottom: 16px;
    color: #2d3748;
}

.feature-description {
    font-size: 16px;
    color: #4a5568;
    line-height: 1.6;
}

/* 月薪计划页面样式 */
.monthly-plan-hero {
    background: linear-gradient(135deg, #ff5c35 0%, #ff8a65 100%);
    color: white;
    padding: 80px 0;
    text-align: center;
}

.plan-overview {
    padding: 80px 0;
    background-color: white;
}

.overview-container {
    max-width: 1200px;
    margin: 0 auto;
    padding: 0 20px;
}

.system-intro {
    background: linear-gradient(135deg, #f0f9ff 0%, #e0f2fe 100%);
    border-radius: 16px;
    padding: 40px;
    margin-bottom: 60px;
    border: 1px solid #0ea5e9;
}

.system-title {
    font-size: 28px;
    font-weight: 700;
    color: #0ea5e9;
    margin-bottom: 20px;
    text-align: center;
}

.core-rules {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
    gap: 30px;
}

.rule-card {
    background: white;
    border-radius: 12px;
    padding: 30px;
    box-shadow: 0 4px 12px rgba(0, 0, 0, 0.1);
    border: 1px solid #e2e8f0;
}

.rule-title {
    font-size: 20px;
    font-weight: 600;
    color: #2d3748;
    margin-bottom: 16px;
}

.rule-description {
    font-size: 16px;
    color: #4a5568;
    line-height: 1.6;
}

.plans-section {
    background-color: #f8f9fa;
    padding: 80px 0;
}

.plans-container {
    max-width: 1200px;
    margin: 0 auto;
    padding: 0 20px;
}

.plans-grid {
    display: grid;
    grid-template-columns: 1fr;
    gap: 30px;
    margin-bottom: 60px;
}

.plan-card {
    background: white;
    border-radius: 16px;
    padding: 30px;
    box-shadow: 0 4px 20px rgba(0, 0, 0, 0.1);
    transition: all 0.3s ease;
    border: 2px solid transparent;
    position: relative;
    overflow: hidden;
}

.plan-card::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    height: 4px;
    background: linear-gradient(135deg, #ff5c35, #ff8a65);
}

.plan-card:hover {
    transform: translateY(-8px);
    box-shadow: 0 12px 40px rgba(255, 92, 53, 0.2);
    border-color: #ff5c35;
}

.plan-level {
    font-size: 24px;
    font-weight: 700;
    color: #ff5c35;
    margin-bottom: 20px;
    text-align: center;
}

.plan-metrics {
    display: flex;
    flex-direction: column;
    gap: 16px;
}

.metric-item {
    display: flex;
    justify-content: space-between;
    align-items: center;
    padding: 12px 0;
    border-bottom: 1px solid #e2e8f0;
}

.metric-item:last-child {
    border-bottom: none;
}

.metric-label {
    font-size: 14px;
    color: #4a5568;
    font-weight: 500;
}

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

.metric-value.highlight {
    color: #ff5c35;
    font-size: 18px;
}

/* 联盟计划页面样式 */
.affiliate-hero {
    background: linear-gradient(135deg, #22c55e 0%, #16a34a 100%);
    color: white;
    padding: 80px 0;
    text-align: center;
}

.affiliate-overview {
    padding: 80px 0;
    background-color: white;
}

.welcome-section {
    background: linear-gradient(135deg, #f0fdf4 0%, #dcfce7 100%);
    border-radius: 16px;
    padding: 40px;
    margin-bottom: 60px;
    border: 1px solid #22c55e;
}

.welcome-title {
    font-size: 28px;
    font-weight: 700;
    color: #22c55e;
    margin-bottom: 20px;
    text-align: center;
}

.welcome-description {
    font-size: 18px;
    color: #166534;
    line-height: 1.6;
    text-align: center;
    margin-bottom: 30px;
}

.platform-types {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(250px, 1fr));
    gap: 20px;
}

.platform-item {
    background: white;
    border-radius: 8px;
    padding: 16px;
    text-align: center;
    font-size: 14px;
    color: #4a5568;
    border: 1px solid #22c55e;
}

.benefits-section {
    padding: 80px 0;
    background-color: #f8f9fa;
}

.benefits-container {
    max-width: 1200px;
    margin: 0 auto;
    padding: 0 20px;
}

.benefits-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
    gap: 30px;
}

.benefit-card {
    background: white;
    border-radius: 16px;
    padding: 40px 30px;
    text-align: center;
    box-shadow: 0 4px 20px rgba(34, 197, 94, 0.1);
    transition: all 0.3s ease;
    border: 2px solid transparent;
}

.benefit-card::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    height: 4px;
    background: linear-gradient(135deg, #22c55e, #16a34a);
}

.benefit-card {
    position: relative;
}

.benefit-card:hover {
    transform: translateY(-8px);
    box-shadow: 0 12px 40px rgba(34, 197, 94, 0.2);
    border-color: #22c55e;
}

.benefit-icon {
    width: 64px;
    height: 64px;
    margin: 0 auto 24px;
    background: linear-gradient(135deg, #22c55e, #16a34a);
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 28px;
}

.benefit-title {
    font-size: 20px;
    font-weight: 600;
    color: #22c55e;
    margin-bottom: 16px;
}

.benefit-percentage {
    font-size: 36px;
    font-weight: 700;
    color: #22c55e;
    margin-bottom: 16px;
}

.benefit-description {
    font-size: 16px;
    color: #4a5568;
    line-height: 1.6;
}

.details-section {
    padding: 80px 0;
    background-color: white;
}

.details-container {
    max-width: 1200px;
    margin: 0 auto;
    padding: 0 20px;
}

.commission-table {
    background: linear-gradient(135deg, #fef7ff 0%, #faf5ff 100%);
    border: 1px solid #a855f7;
    border-radius: 16px;
    padding: 40px;
    margin-bottom: 60px;
}

.commission-title {
    font-size: 24px;
    font-weight: 700;
    color: #a855f7;
    text-align: center;
    margin-bottom: 30px;
}

.commission-items {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
    gap: 20px;
}

.commission-item {
    background: white;
    border-radius: 8px;
    padding: 20px;
    font-size: 15px;
    color: #4a5568;
    border: 1px solid #e9d5ff;
    transition: all 0.3s ease;
}

.commission-item:hover {
    transform: translateY(-2px);
    box-shadow: 0 4px 12px rgba(168, 85, 247, 0.15);
}

.commission-item::before {
    content: "✓";
    color: #a855f7;
    font-weight: bold;
    margin-right: 12px;
    font-size: 16px;
}

.steps-section {
    padding: 80px 0;
    background-color: #f8f9fa;
}

.steps-container {
    max-width: 1200px;
    margin: 0 auto;
    padding: 0 20px;
}

.steps-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
    gap: 30px;
}

.step-card {
    background: white;
    border-radius: 16px;
    padding: 40px 30px;
    text-align: center;
    box-shadow: 0 4px 20px rgba(0, 0, 0, 0.1);
    transition: all 0.3s ease;
    position: relative;
}

.step-card:hover {
    transform: translateY(-8px);
    box-shadow: 0 12px 40px rgba(0, 0, 0, 0.15);
}

.step-number {
    width: 60px;
    height: 60px;
    background: linear-gradient(135deg, #ff5c35, #ff6b3d);
    color: white;
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 24px;
    font-weight: bold;
    margin: 0 auto 24px;
}

.step-title {
    font-size: 20px;
    font-weight: 600;
    color: #2d3748;
    margin-bottom: 16px;
}

.step-description {
    font-size: 16px;
    color: #4a5568;
    line-height: 1.6;
}

/* 客户logo轮播样式 */
.client-logos-section {
    padding: 60px 0;
    background: white;
    text-align: center;
    overflow: hidden;
}

.logos-container {
    width: 100%;
    padding: 0 20px;
}

.logos-row-wrapper {
    display: flex;
    margin-bottom: 30px;
    overflow: hidden;
}

.logos-row-wrapper:last-child {
    margin-bottom: 0;
}

.logos-row {
    display: flex;
    align-items: center;
    white-space: nowrap;
    animation: scrollRight 40s linear infinite;
    flex-shrink: 0;
}

.logos-row-wrapper:nth-of-type(2) .logos-row {
    animation-duration: 45s;
}

.logo-item {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    padding: 10px 20px;
    margin: 0 15px;
    height: 60px;
    min-width: 100px;
    border-radius: 0;
    background: transparent;
    box-shadow: none;
    transition: transform 0.3s ease;
    border: none;
    white-space: nowrap;
    flex-shrink: 0;
}

.logo-item img {
    max-height: 70px;
    max-width: 150px;
    width: auto;
    height: auto;
    object-fit: contain;
    transition: all 0.3s ease;
}

.logo-item:hover {
    transform: scale(1.1);
}

@keyframes scrollRight {
    0% {
        transform: translateX(0);
    }
    100% {
        transform: translateX(-100%);
    }
}

/* 移动端适配 */
@media (max-width: 768px) {
    .logos-row {
        margin-bottom: 20px;
        animation-duration: 20s;
    }

    .logos-row:nth-child(2) {
        animation-duration: 18s;
    }

    .logo-item {
        padding: 8px 16px;
        font-size: 13px;
        margin: 0 8px;
    }

    .client-logos-section {
        padding: 40px 0;
    }
}

/* 为什么选择我们 - 三步流程样式 */
.why-choose-us-section {
    padding: 80px 0;
    background-color: #ffffff;
}

.why-choose-us-container {
    max-width: 1200px;
    margin: 0 auto;
    padding: 0 20px;
}

.value-proposition {
    text-align: center;
    margin-bottom: 60px;
}

.value-proposition-title {
    font-size: 36px;
    font-weight: 700;
    color: #2d3748;
    margin-bottom: 24px;
    line-height: 1.2;
}

.value-proposition-description {
    font-size: 18px;
    color: #4a5568;
    line-height: 1.6;
    max-width: 800px;
    margin: 0 auto;
}

.process-steps-container {
    background: white;
    border-radius: 20px;
    padding: 60px 40px;
    box-shadow: 0 4px 20px rgba(0, 0, 0, 0.08);
    position: relative;
}

.process-steps {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: 60px;
    position: relative;
}

.process-steps::before {
    content: '';
    position: absolute;
    top: 60px;
    left: 33.33%;
    right: 33.33%;
    height: 2px;
    background: linear-gradient(to right, 
        transparent 0%, 
        #e2e8f0 10%, 
        #e2e8f0 90%, 
        transparent 100%);
    z-index: 1;
}

.step-item {
    text-align: center;
    position: relative;
    z-index: 2;
}

.step-number {
    position: relative;
    width: 120px;
    height: 120px;
    margin: 0 auto 32px;
    display: flex;
    align-items: center;
    justify-content: center;
}

.step-number-text {
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    font-size: 120px;
    font-weight: 900;
    color: #f0f9f0;
    line-height: 1;
    z-index: 1;
}

.step-icon-wrapper {
    position: relative;
    z-index: 2;
    width: 80px;
    height: 80px;
    background: transparent;
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    box-shadow: 0 4px 16px rgba(34, 197, 94, 0.1);
    border: 3px solid #22c55e;
}

.step-icon {
    font-size: 32px;
    color: #22c55e;
}

.step-title {
    font-size: 24px;
    font-weight: 700;
    color: #2d3748;
    margin-bottom: 16px;
    line-height: 1.2;
}

.step-description {
    font-size: 16px;
    color: #4a5568;
    line-height: 1.6;
}

@media (max-width: 768px) {
    .process-steps {
        grid-template-columns: 1fr;
        gap: 40px;
    }

    .process-steps::before {
        display: none;
    }

    .step-number {
        width: 100px;
        height: 100px;
    }

    .step-number-text {
        font-size: 100px;
    }

    .step-icon-wrapper {
        width: 70px;
        height: 70px;
    }

    .step-icon {
        font-size: 28px;
    }

    .value-proposition-title {
        font-size: 28px;
    }

    .process-steps-container {
        padding: 40px 20px;
    }
}

.faq-section {
    padding: 80px 0;
    background-color: white;
}

.faq-container {
    max-width: 800px;
    margin: 0 auto;
    padding: 0 20px;
}

.faq-grid {
    display: flex;
    flex-direction: column;
    gap: 30px;
}

.faq-item {
    background: #f8fafc;
    border-radius: 12px;
    padding: 30px;
    border: 1px solid #e2e8f0;
    transition: all 0.3s ease;
}

.faq-item:hover {
    box-shadow: 0 4px 12px rgba(0, 0, 0, 0.1);
}

.faq-question {
    font-size: 18px;
    font-weight: 600;
    color: #2d3748;
    margin-bottom: 16px;
}

.faq-answer {
    font-size: 16px;
    color: #4a5568;
    line-height: 1.6;
}

.cta-final {
    padding: 80px 0;
    background: linear-gradient(135deg, #fff7ed 0%, #fed7aa 100%);
}

.cta-container {
    max-width: 800px;
    margin: 0 auto;
    padding: 0 20px;
    text-align: center;
}

.cta-title {
    font-size: 32px;
    font-weight: 700;
    color: #ea580c;
    margin-bottom: 20px;
}

.cta-description {
    font-size: 18px;
    color: #92400e;
    line-height: 1.6;
    margin-bottom: 40px;
}

.cta-button {
    background: linear-gradient(135deg, #ff5c35, #ff6b3d);
    color: white;
    border: none;
    padding: 16px 40px;
    border-radius: 50px;
    font-size: 18px;
    font-weight: 600;
    cursor: pointer;
    transition: all 0.3s ease;
    box-shadow: 0 4px 20px rgba(255, 92, 53, 0.3);
}

.cta-button:hover {
    background: linear-gradient(135deg, #e04a2a, #e05a2d);
    transform: translateY(-2px);
    box-shadow: 0 6px 25px rgba(255, 92, 53, 0.4);
}

/* 响应式设计 */
@media (max-width: 768px) {
    .main-container {
        padding: 0 16px;
    }

    .nav-center {
        display: none;
    }

    .hero-title {
        font-size: 36px;
        text-shadow: 2px 2px 4px rgba(0, 0, 0, 0.7);
        color: #ffffff;
    }
    
    .hero-content {
        padding: 24px;
    }

    .hero-buttons {
        flex-direction: column;
        align-items: center;
    }

    .plans-grid,
    .benefits-grid,
    .steps-grid {
        grid-template-columns: 1fr;
    }

    .core-rules {
        grid-template-columns: 1fr;
    }

    .commission-items {
        grid-template-columns: 1fr;
    }

    .service-cards-grid {
        grid-template-columns: 1fr;
        gap: 30px;
    }
}

/* 现代服务卡片样式 */
.service-cards-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(380px, 1fr));
    gap: 40px;
    margin-top: 40px;
}

.modern-service-card {
    background: white;
    border-radius: 16px;
    padding: 32px;
    box-shadow: 0 2px 8px rgba(0, 0, 0, 0.04);
    transition: all 0.3s ease;
    position: relative;
}

.modern-service-card:hover {
    box-shadow: 0 8px 25px rgba(0, 0, 0, 0.12);
    transform: translateY(-2px);
}

.service-header {
    display: flex;
    align-items: center;
    margin-bottom: 24px;
}

.service-emoji {
    font-size: 28px;
    margin-right: 16px;
    color: #ff6b35;
}

.service-title {
    font-size: 20px;
    font-weight: 700;
    color: #2d3748;
    margin: 0;
}

.service-trademark {
    font-size: 12px;
    color: #9ca3af;
    margin-left: 4px;
}

.service-divider {
    border: none;
    height: 1px;
    background: repeating-linear-gradient(
        to right,
        #e5e7eb 0px,
        #e5e7eb 6px,
        transparent 6px,
        transparent 10px
    );
    margin: 24px 0;
}

.service-features {
    margin-bottom: 24px;
}

.service-feature-item {
    display: flex;
    align-items: flex-start;
    gap: 12px;
    margin-bottom: 12px;
    font-size: 15px;
    color: #4b5563;
    line-height: 1.6;
}

.feature-check {
    color: #ff6b35;
    font-weight: bold;
    font-size: 18px;
    margin-top: 2px;
    flex-shrink: 0;
}

.service-bottom-divider {
    border: none;
    height: 1px;
    background: repeating-linear-gradient(
        to right,
        #e5e7eb 0px,
        #e5e7eb 6px,
        transparent 6px,
        transparent 10px
    );
    margin: 24px 0;
}

.learn-more-link {
    color: #374151;
    text-decoration: none;
    font-size: 15px;
    font-weight: 500;
    transition: all 0.2s ease;
    display: inline-flex;
    align-items: center;
}

.learn-more-link:hover {
    color: #ff6b35;
}

.arrow-right {
    margin-left: 6px;
    font-size: 14px;
    transition: transform 0.2s ease;
}

.learn-more-link:hover .arrow-right {
    transform: translateX(4px);
}

.learn-more {
    color: #4a5568;
    text-decoration: none;
    font-weight: 500;
    font-size: 14px;
    border-top: 1px solid #e2e8f0;
    padding-top: 16px;
    display: block;
    transition: color 0.2s ease;
}

.learn-more:hover {
    color: #ff5c35;
}

/* 功能卡片样式 */
.function-card {
    background: white;
    border-radius: 8px;
    padding: 24px 20px;
    border: 1px solid #e2e8f0;
    transition: all 0.3s ease;
}

.function-card:hover {
    transform: translateY(-2px);
    box-shadow: 0 4px 12px rgba(0, 0, 0, 0.1);
}

.function-title {
    font-size: 16px;
    font-weight: 600;
    color: #2d3748;
    margin-bottom: 12px;
}

.function-description {
    font-size: 14px;
    color: #4a5568;
    line-height: 1.5;
}

/* 热门功能 - 流程步骤样式 */
.featured-functions-section {
    padding: 80px 0;
    background-color: white;
}

.featured-functions-container {
    max-width: 1200px;
    margin: 0 auto;
    padding: 0 20px;
}

.functions-header {
    text-align: center;
    margin-bottom: 60px;
}

.functions-title {
    font-size: 36px;
    font-weight: 700;
    color: #2d3748;
    margin-bottom: 24px;
    line-height: 1.2;
}

.functions-subtitle {
    font-size: 18px;
    color: #4a5568;
    line-height: 1.6;
    max-width: 800px;
    margin: 0 auto;
}

.featured-functions-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(350px, 1fr));
    gap: 40px;
    margin-top: 60px;
}

.function-feature-card {
    background: white;
    border-radius: 16px;
    padding: 40px 30px;
    text-align: center;
    border: 2px solid #f1f5f9;
    transition: all 0.3s ease;
    position: relative;
    overflow: hidden;
}

.function-feature-card:hover {
    border-color: #22c55e;
    box-shadow: 0 8px 30px rgba(34, 197, 94, 0.15);
    transform: translateY(-2px);
}

.function-feature-card::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    height: 4px;
    background: linear-gradient(90deg, #22c55e, #16a34a);
    opacity: 0;
    transition: opacity 0.3s ease;
}

.function-feature-card:hover::before {
    opacity: 1;
}

.function-feature-number {
    position: relative;
    width: 80px;
    height: 80px;
    margin: 0 auto 24px;
    display: flex;
    align-items: center;
    justify-content: center;
}

.function-feature-number-text {
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    font-size: 80px;
    font-weight: 900;
    color: #f0fdf4;
    line-height: 1;
    z-index: 1;
}

.function-feature-icon-wrapper {
    position: relative;
    z-index: 2;
    width: 60px;
    height: 60px;
    background: linear-gradient(135deg, #22c55e, #16a34a);
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    box-shadow: 0 4px 16px rgba(34, 197, 94, 0.3);
}

.function-feature-icon {
    font-size: 24px;
    color: white;
}

.function-feature-title {
    font-size: 22px;
    font-weight: 700;
    color: #2d3748;
    margin-bottom: 16px;
    line-height: 1.3;
}

.function-feature-description {
    font-size: 16px;
    color: #4a5568;
    line-height: 1.6;
}

/* 视频轮播组件样式 */
.video-carousel-section {
    padding: 80px 0;
    background-color: #f8f9fa;
}

.video-carousel-container {
    max-width: 1200px;
    margin: 0 auto;
    padding: 0 20px;
    text-align: center;
}

.video-carousel-title {
    font-size: 24px;
    font-weight: 600;
    color: #2d3748;
    margin-bottom: 60px;
    line-height: 1.4;
}

.video-carousel-wrapper {
    position: relative;
    max-width: 1000px;
    margin: 0 auto;
}

.video-carousel-viewport {
    overflow: hidden;
    border-radius: 16px;
    box-shadow: 0 10px 40px rgba(0, 0, 0, 0.1);
}

.video-carousel-track {
    display: flex;
    transition: transform 0.6s cubic-bezier(0.4, 0, 0.2, 1);
    width: 100%;
}

.video-carousel-slide {
    min-width: 100%;
    position: relative;
    background: #000;
    cursor: pointer;
}

.video-carousel-slide.active {
    cursor: default;
}

.video-placeholder {
    width: 100%;
    height: 400px;
    background: linear-gradient(135deg, #667eea 0%, #764ba2 100%);
    display: flex;
    align-items: center;
    justify-content: center;
    color: white;
    font-size: 18px;
    font-weight: 600;
    position: relative;
    overflow: hidden;
}

.video-placeholder video {
    width: 100%;
    height: 100%;
    display: block;
    object-fit: cover;
}

.video-placeholder::before {
    content: '';
    position: absolute;
    top: 0;
    left: -100%;
    width: 100%;
    height: 100%;
    background: linear-gradient(90deg, transparent, rgba(255, 255, 255, 0.1), transparent);
    animation: shimmer 2s infinite;
}

@keyframes shimmer {
    0% {
        left: -100%;
    }
    100% {
        left: 100%;
    }
}

.video-play-button {
    position: absolute;
    top: 50%;
    left: 50%;
    transform: translate(-50%, -50%);
    width: 80px;
    height: 80px;
    background: rgba(255, 255, 255, 0.9);
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 32px;
    color: #667eea;
    transition: all 0.3s ease;
    backdrop-filter: blur(10px);
    z-index: 2;
}

.video-carousel-slide:hover .video-play-button {
    background: rgba(255, 255, 255, 1);
    transform: translate(-50%, -50%) scale(1.1);
}

.video-info {
    position: absolute;
    bottom: 0;
    left: 0;
    right: 0;
    background: linear-gradient(transparent, rgba(0, 0, 0, 0.8));
    color: white;
    padding: 40px 30px 30px;
    z-index: 1;
}

.video-title {
    font-size: 20px;
    font-weight: 700;
    margin-bottom: 8px;
}

.video-description {
    font-size: 14px;
    opacity: 0.9;
    line-height: 1.4;
}

.video-carousel-controls {
    display: flex;
    align-items: center;
    justify-content: center;
    margin-top: 30px;
    gap: 20px;
}

.video-carousel-nav {
    display: flex;
    gap: 8px;
}

.video-nav-dot {
    width: 12px;
    height: 12px;
    border-radius: 50%;
    background: #d1d5db;
    cursor: pointer;
    transition: all 0.3s ease;
}

.video-nav-dot.active {
    background: #667eea;
    transform: scale(1.2);
}

.video-nav-dot:hover {
    background: #9ca3af;
}

.video-carousel-arrows {
    display: flex;
    gap: 10px;
}

.video-arrow {
    width: 40px;
    height: 40px;
    border: none;
    background: white;
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    cursor: pointer;
    font-size: 16px;
    color: #667eea;
    box-shadow: 0 4px 12px rgba(0, 0, 0, 0.1);
    transition: all 0.3s ease;
}

.video-arrow:hover {
    background: #667eea;
    color: white;
    transform: translateY(-2px);
    box-shadow: 0 6px 20px rgba(102, 126, 234, 0.3);
}

.video-arrow:disabled {
    opacity: 0.5;
    cursor: not-allowed;
}

.video-progress {
    width: 200px;
    height: 4px;
    background: #e5e7eb;
    border-radius: 2px;
    overflow: hidden;
    margin: 0 20px;
}

.video-progress-bar {
    height: 100%;
    background: #667eea;
    border-radius: 2px;
    transition: width 0.1s linear;
    width: 0%;
}

.auto-play-indicator {
    font-size: 12px;
    color: #6b7280;
    margin-top: 10px;
}

@media (max-width: 768px) {
    .video-carousel-title {
        font-size: 20px;
        margin-bottom: 40px;
    }

    .video-placeholder {
        height: 250px;
    }

    .video-play-button {
        width: 60px;
        height: 60px;
        font-size: 24px;
    }

    .video-info {
        padding: 30px 20px 20px;
    }

    .video-title {
        font-size: 18px;
    }

    .video-carousel-controls {
        margin-top: 20px;
    }

    .video-progress {
        width: 150px;
    }
}

/* 支持卡片样式 */
.support-card {
    background: white;
    border-radius: 12px;
    padding: 30px;
    text-align: center;
    box-shadow: 0 4px 20px rgba(0, 0, 0, 0.1);
    transition: all 0.3s ease;
}

.support-card:hover {
    transform: translateY(-8px);
    box-shadow: 0 12px 40px rgba(0, 0, 0, 0.15);
}

.support-icon {
    font-size: 48px;
    margin-bottom: 24px;
}

.support-title {
    font-size: 20px;
    font-weight: 600;
    color: #2d3748;
    margin-bottom: 16px;
}

.support-description {
    font-size: 16px;
    color: #4a5568;
    line-height: 1.6;
}

/* 响应式设计 */
@media (max-width: 768px) {
    .service-grid,
    .function-grid,
    .result-grid,
    .support-grid {
        grid-template-columns: 1fr;
    }

    .service-card,
    .function-card,
    .support-card {
        margin-bottom: 20px;
    }
}

/* Mobile navigation toggle and hero/video adjustments */
.nav-toggle {
    display: none; /* shown only on small screens via media query */
    background: none;
    border: none;
    cursor: pointer;
    align-items: center;
    gap: 8px;
    font-size: 18px;
}

@media (max-width: 768px) {
    .main-container {
        padding: 0 12px;
    }

    /* hide center nav and show toggle button */
    .nav-center {
        display: none;
    }

    .nav-toggle {
        display: inline-flex;
        z-index: 10002;
    }

    /* when open, show nav-center as a stacked dropdown */
    .nav-center.open {
        display: flex;
        flex-direction: column;
        position: absolute;
        left: 0;
        right: 0;
        top: 64px;
        background: #ffffff;
        padding: 12px 18px;
        gap: 10px;
        box-shadow: 0 8px 24px rgba(0, 0, 0, 0.08);
    }

    /* compact header spacing */
    .logo {
        font-size: 20px;
        gap: 6px;
    }

    /* hero and carousel sizing for mobile */
    .hero {
        height: auto;
        padding: 36px 0;
    }

    .hero .hero-content {
        padding: 0 8px;
    }

    .video-carousel {
        height: auto;
        padding: 16px 0;
    }

    .video-carousel .video-carousel-track {
        gap: 10px;
    }

    .video-carousel .video-slide video {
        width: 100%;
        height: 200px;
        object-fit: cover;
        border-radius: 8px;
    }

    .nav-right {
        gap: 8px;
    }

    .btn {
        padding: 10px 14px;
        font-size: 13px;
    }
}