* {
    margin: 0;
    padding: 0;
    box-sizing: border-box;
    font-family: 'Inter', 'Segoe UI', Roboto, Oxygen, Ubuntu, sans-serif;
}

body {
    background-color: #F2F3F5;
    color: #1D2129;
    line-height: 1.6;
    overflow-x: hidden;
}

a {
    text-decoration: none;
    color: inherit;
}

.container {
    width: 100%;
    max-width: 1580px;
    margin: 0 auto;
    padding: 0 20px;
}

/* 标题样式 */
h1, h2, h3, h4 {
    font-weight: 700;
    line-height: 1.3;
    position: relative;
}

h1 {
    font-size: 3.2rem;
    margin-bottom: 20px;
}

h2 {
    font-size: 2.5rem;
    margin-bottom: 25px;
    text-align: center;
    color: #1D2129;
    position: relative;
    padding-bottom: 15px;
}

h2::after {
    content: '';
    position: absolute;
    bottom: 0;
    left: 50%;
    transform: translateX(-50%);
    width: 70px;
    height: 4px;
    background: linear-gradient(135deg, #7B61FF 0%, #B894FF 100%);
    border-radius: 2px;
}

h3 {
    font-size: 1.8rem;
    margin-bottom: 20px;
    color: #7B61FF;
}

h4 {
    font-size: 1.3rem;
    margin-bottom: 15px;
    color: #1D2129;
}

/* 文本样式 */
.subtitle {
    font-size: 1.25rem;
    color: #4E5969;
    max-width: 800px;
    margin: 0 auto 40px;
    text-align: center;
    line-height: 1.8;
}

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

.text-light {
    color: #FFFFFF;
}

/* 按钮样式 */
.btn {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    padding: 14px 32px;
    border-radius: 12px;
    font-weight: 600;
    font-size: 1rem;
    cursor: pointer;
    transition: all 0.3s cubic-bezier(0.4, 0, 0.2, 1);
    border: none;
    gap: 8px;
    position: relative;
    overflow: hidden;
    z-index: 1;
}

.btn::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    z-index: -1;
    transition: all 0.3s cubic-bezier(0.4, 0, 0.2, 1);
}

.btn-primary {
    background-color: #7B61FF;
    color: #FFFFFF;
    box-shadow: 0 4px 15px rgba(123, 97, 255, 0.3);
}

.btn-primary::before {
    background-color: #7B61FF;
}

.btn-primary:hover::before {
    transform: scale(1.1);
    background: linear-gradient(135deg, #7B61FF 0%, #B894FF 100%);
}

.btn-primary:hover {
    box-shadow: 0 6px 20px rgba(123, 97, 255, 0.4);
    transform: translateY(-2px);
}

.btn-secondary {
    background-color: #FFFFFF;
    color: #7B61FF;
    border: 1px solid #7B61FF;
}

.btn-secondary:hover {
    background-color: rgba(123, 97, 255, 0.05);
    transform: translateY(-2px);
}

.btn-group {
    display: flex;
    gap: 20px;
    flex-wrap: wrap;
    justify-content: center;
    margin: 40px 0;
}

/* 区块样式 */
.section {
    padding: 120px 0;
    position: relative;
    opacity: 0;
    transform: translateY(30px);
    transition: opacity 0.6s ease, transform 0.6s ease;
}

.section.visible {
    opacity: 1;
    transform: translateY(0);
}

.section-sm {
    padding: 80px 0;
}

.section-dark {
    background-color: #1D2129;
    color: #FFFFFF;
}

.section-dark h2,
.section-dark h3,
.section-dark h4 {
    color: #FFFFFF;
}

.section-dark .subtitle {
    color: #C9CDD4;
}

/* 装饰元素 */
.decor-element {
    position: absolute;
    z-index: 0;
    opacity: 0.1;
}

/* 顶部Banner */
.hero {
    padding: 150px 0 120px;
    background: linear-gradient(180deg, #1D2129 0%, #000000 100%);
    color: #FFFFFF;
    position: relative;
    overflow: hidden;
}

.hero::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background-image: 
        radial-gradient(circle at 20% 30%, rgba(123, 97, 255, 0.2) 0%, transparent 40%),
        radial-gradient(circle at 80% 70%, rgba(0, 200, 83, 0.2) 0%, transparent 40%);
    background-size: 100% 100%;
    z-index: 0;
}

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

.hero h1 {
    font-size: 3.5rem;
    margin-bottom: 30px;
    background: linear-gradient(90deg, #FFFFFF, #C9CDD4);
    -webkit-background-clip: text;
    background-clip: text;
    -webkit-text-fill-color: transparent;
    color: #FFF;
}

.hero-subtitle {
    font-size: 1.35rem;
    opacity: 0.9;
    margin-bottom: 40px;
    line-height: 1.8;
    max-width: 700px;
    margin-left: auto;
    margin-right: auto;
}

.seo-tags {
    display: flex;
    flex-wrap: wrap;
    justify-content: center;
    gap: 12px;
    margin-top: 50px;
}

.seo-tag {
    background-color: rgba(255, 255, 255, 0.1);
    padding: 8px 20px;
    border-radius: 30px;
    font-size: 0.9rem;
    transition: all 0.3s cubic-bezier(0.4, 0, 0.2, 1);
    backdrop-filter: blur(10px);
}

.seo-tag:hover {
    background-color: rgba(123, 97, 255, 0.2);
    transform: translateY(-3px);
}

/* 产品介绍模块 */
.intro {
    background-color: #FFFFFF;
    position: relative;
}

.intro::after {
    content: '';
    position: absolute;
    bottom: 0;
    left: 0;
    width: 100%;
    height: 80px;
    background: linear-gradient(180deg, transparent 0%, #F2F3F5 100%);
    z-index: 1;
}

.intro-content {
    max-width: 800px;
    margin: 0 auto;
    text-align: center;
    font-size: 1.2rem;
    color: #4E5969;
    line-height: 1.8;
    position: relative;
    z-index: 2;
}

/* 功能亮点模块 */
.features {
    background-color: #F2F3F5;
    position: relative;
    overflow: hidden;
}

.features::before {
    content: '';
    position: absolute;
    top: 10%;
    right: -15%;
    width: 40%;
    height: 80%;
    background: radial-gradient(circle, rgba(123, 97, 255, 0.05) 0%, transparent 70%);
    border-radius: 50%;
    z-index: 0;
}

.features-grid {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: 30px;
    margin-top: 50px;
    position: relative;
    z-index: 1;
}

.feature-card {
    background-color: #FFFFFF;
    border-radius: 12px;
    padding: 35px;
    box-shadow: 0 10px 30px rgba(123, 97, 255, 0.08);
    transition: all 0.3s cubic-bezier(0.4, 0, 0.2, 1);
    position: relative;
    overflow: hidden;
}

.feature-card::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 4px;
    background: linear-gradient(135deg, #7B61FF 0%, #B894FF 100%);
    transform: scaleX(0);
    transition: all 0.3s cubic-bezier(0.4, 0, 0.2, 1);
}

.feature-card:hover {
    transform: translateY(-10px);
    box-shadow: 0 15px 40px rgba(123, 97, 255, 0.12);
}

.feature-card:hover::before {
    transform: scaleX(1);
}

.feature-icon {
    width: 70px;
    height: 70px;
    border-radius: 15px;
    background-color: rgba(123, 97, 255, 0.1);
    display: flex;
    align-items: center;
    justify-content: center;
    margin-bottom: 25px;
}

.feature-icon i {
    font-size: 28px;
    color: #7B61FF;
}

.feature-card h4 {
    margin-bottom: 15px;
}

.feature-card p {
    color: #4E5969;
    line-height: 1.7;
}

/* 应用场景模块 */
.scenarios {
    background-color: #FFFFFF;
}

.scenarios-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(280px, 1fr));
    gap: 30px;
    margin-top: 50px;
}

.scenario-card {
    background-color: #F2F3F5;
    border-radius: 12px;
    padding: 35px;
    transition: all 0.3s cubic-bezier(0.4, 0, 0.2, 1);
    position: relative;
    border: 1px solid transparent;
}

.scenario-card:hover {
    background-color: #FFFFFF;
    border-color: #E5E6EB;
    transform: translateY(-8px);
    box-shadow: 0 10px 30px rgba(123, 97, 255, 0.08);
}

.scenario-card::before {
    content: '';
    position: absolute;
    top: 30px;
    left: 30px;
    width: 50px;
    height: 50px;
    border-radius: 12px;
    background-color: rgba(123, 97, 255, 0.1);
    z-index: 0;
}

.scenario-icon {
    position: relative;
    z-index: 1;
    font-size: 24px;
    color: #7B61FF;
    margin-bottom: 25px;
}

/* 美国市场专题 */
.us-market {
    background-color: #1D2129;
    color: #FFFFFF;
    position: relative;
    overflow: hidden;
}

.us-market::before {
    content: '';
    position: absolute;
    top: 0;
    right: 0;
    width: 50%;
    height: 100%;
    background-image: url('https://picsum.photos/id/1033/800/1000');
    background-size: cover;
    background-position: center;
    opacity: 0.1;
    z-index: 0;
}

.market-content {
    position: relative;
    z-index: 1;
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: 30px;
}

.market-section {
      margin-bottom: 40px;
}

.market-section h4 {
    color: #00C853;
    margin-bottom: 20px;
    display: flex;
    align-items: center;
    gap: 10px;
}

.market-section h4 i {
    font-size: 1.5rem;
}

.market-section p {
    color: #C9CDD4;
    margin-bottom: 15px;
    line-height: 1.8;
}

.market-list {
    padding-left: 25px;
    margin-bottom: 20px;
}

.market-list li {
    color: #C9CDD4;
    margin-bottom: 10px;
    line-height: 1.7;
    position: relative;
}

.market-list li::before {
    content: '•';
    position: absolute;
    left: -20px;
    color: #00C853;
    font-size: 1.5rem;
    line-height: 1;
}

/* 客户痛点 vs 解决方案 */
.solutions {
    background-color: #FFFFFF;
    padding-bottom: 150px;
}

.solutions-table {
    width: 100%;
    border-collapse: separate;
    border-spacing: 0;
    margin-top: 40px;
    border-radius: 12px;
    overflow: hidden;
    box-shadow: 0 10px 30px rgba(123, 97, 255, 0.08);
}

.solutions-table th,
.solutions-table td {
    padding: 20px 25px;
    text-align: left;
    border-bottom: 1px solid #E5E6EB;
}

.solutions-table th {
    background-color: #7B61FF;
    color: #FFFFFF;
    font-weight: 600;
    width: 50%;
}

.solutions-table tr:last-child td {
    border-bottom: none;
}

.solutions-table tr:nth-child(even) td {
    background-color: #F2F3F5;
}

.solutions-table td:first-child {
    font-weight: 600;
}

/* 案例分享模块 */
.case-study {
    background-color: #F2F3F5;
    margin-top: -80px;
    position: relative;
    z-index: 2;
}

.case-card {
    background-color: #FFFFFF;
    border-radius: 12px;
    padding: 40px;
    box-shadow: 0 10px 30px rgba(123, 97, 255, 0.08);
    max-width: 900px;
    margin: 0 auto;
    position: relative;
    overflow: hidden;
}

.case-card::before {
    content: '"';
    position: absolute;
    top: 20px;
    right: 30px;
    font-size: 120px;
    color: rgba(123, 97, 255, 0.05);
    font-family: Georgia, serif;
    line-height: 1;
}

.case-content {
    position: relative;
    z-index: 1;
    font-size: 1.1rem;
    line-height: 1.8;
    color: #4E5969;
}

.case-highlights {
    display: flex;
    flex-wrap: wrap;
    gap: 25px;
    margin-top: 30px;
    padding-top: 25px;
    border-top: 1px solid #E5E6EB;
}

.case-highlight {
    flex: 1;
    min-width: 200px;
}

.case-highlight .value {
    font-size: 2rem;
    font-weight: 700;
    color: #7B61FF;
    margin-bottom: 5px;
}

.case-highlight .label {
    color: #4E5969;
    font-size: 0.95rem;
}

/* FAQ模块 */
.faq {
    background-color: #FFFFFF;
}

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

.faq-item {
    margin-bottom: 15px;
    border-radius: 12px;
    overflow: hidden;
    box-shadow: 0 10px 30px rgba(123, 97, 255, 0.08);
}

.faq-question {
    width: 100%;
    padding: 20px 25px;
    text-align: left;
    background-color: #FFFFFF;
    border: none;
    font-size: 1.1rem;
    font-weight: 600;
    color: #1D2129;
    cursor: pointer;
    display: flex;
    align-items: center;
    gap: 15px;
    transition: all 0.3s cubic-bezier(0.4, 0, 0.2, 1);
}

.faq-question:hover {
    background-color: #F2F3F5;
}

.faq-question i {
    color: #7B61FF;
    font-size: 1.2rem;
    width: 24px;
    text-align: center;
}

.faq-question .toggle-icon {
    margin-left: auto;
    transition: all 0.3s cubic-bezier(0.4, 0, 0.2, 1);
}

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

.faq-answer {
    padding: 0 25px 0 65px;
    max-height: 0;
    overflow: hidden;
    transition: max-height 0.4s ease, padding 0.4s ease;
    background-color: #FFFFFF;
}

.faq-answer.active {
    padding: 0 25px 25px 65px;
    max-height: 500px;
}

.faq-answer p {
    color: #4E5969;
    line-height: 1.7;
}

/* CTA模块 */
.cta {
    background: linear-gradient(135deg, #7B61FF 0%, #B894FF 100%);
    padding: 150px 0;
    text-align: center;
    color: #FFFFFF;
    position: relative;
    overflow: hidden;
}

.cta::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background-image: 
        radial-gradient(circle at 30% 30%, rgba(255, 255, 255, 0.1) 0%, transparent 30%),
        radial-gradient(circle at 70% 70%, rgba(255, 255, 255, 0.1) 0%, transparent 30%);
}

.cta-content {
    position: relative;
    max-width: 800px;
    margin: 0 auto;
}

.cta h2 {
    color: #FFFFFF;
    margin-bottom: 30px;
}

.cta h2::after {
    background: rgba(255, 255, 255, 0.3);
}

.cta p {
    font-size: 1.2rem;
    margin-bottom: 50px;
    opacity: 0.9;
}

/* 响应式设计 */
@media (max-width: 1200px) {
    .container {
        max-width: 960px;
    }
}

@media (max-width: 992px) {
    .container {
        max-width: 720px;
    }
    
    .section {
        padding: 100px 0;
    }
    
    .section-sm {
        padding: 70px 0;
    }
    
    h1 {
        font-size: 2.8rem;
    }
    
    h2 {
        font-size: 2.2rem;
    }
    
    h3 {
        font-size: 1.6rem;
    }
    
    .hero h1 {
        font-size: 3rem;
    }
    
    .us-market::before {
        width: 40%;
    }
}

@media (max-width: 768px) {
    .container {
        max-width: 540px;
    }
    
    .section {
        padding: 80px 0;
    }
    
    .section-sm {
        padding: 60px 0;
    }
    
    h1 {
        font-size: 2.4rem;
    }
    
    h2 {
        font-size: 1.9rem;
    }
    
    h3 {
        font-size: 1.5rem;
    }
    
    h4 {
        font-size: 1.2rem;
    }
    
    .hero {
        padding: 120px 0 100px;
    }
    
    .hero h1 {
        font-size: 2.5rem;
    }
    
    .hero-subtitle {
        font-size: 1.2rem;
    }
    
    .btn {
        padding: 12px 28px;
        font-size: 0.95rem;
    }
    
    .btn-group {
        gap: 15px;
    }
    
    .us-market::before {
        display: none;
    }
    
    .solutions-table th,
    .solutions-table td {
        padding: 15px 20px;
        font-size: 0.95rem;
    }
    
    .case-card {
        padding: 30px;
    }
}

@media (max-width: 576px) {
    .container {
        max-width: 100%;
    }
    
    .section {
        padding: 60px 0;
    }
    
    .section-sm {
        padding: 50px 0;
    }
    
    h1 {
        font-size: 2rem;
    }
    
    h2 {
        font-size: 1.6rem;
        margin-bottom: 15px;
    }
    
    h3 {
        font-size: 1.4rem;
    }
    
    .subtitle {
        font-size: 1.1rem;
        margin-bottom: 30px;
    }
    
    .hero h1 {
        font-size: 2.2rem;
    }
    
    .btn-group {
        flex-direction: column;
        gap: 12px;
    }
    
    .btn {
        width: 100%;
    }
    
    .features-grid,
    .scenarios-grid {
        grid-template-columns: 1fr;
    }
    
    .feature-card,
    .scenario-card {
        padding: 25px;
    }
    
    .solutions-table {
        display: block;
        overflow-x: auto;
    }
    
    .case-highlights {
        flex-direction: column;
        gap: 20px;
    }
    
    .cta {
        padding: 100px 0;
    }
}