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

:root {
    --primary-color: #667eea;
    --secondary-color: #764ba2;
    --success-color: #38ef7d;
    --text-dark: #2d3748;
    --text-gray: #718096;
    --border-color: #e2e8f0;
    --bg-light: #f7fafc;
}

html {
    scroll-behavior: smooth;
}

body {
    font-family: -apple-system, BlinkMacSystemFont, 'Segoe UI', 'PingFang SC', 'Hiragino Sans GB', 'Microsoft YaHei', sans-serif;
    color: var(--text-dark);
    line-height: 1.6;
    overflow-x: hidden;
}

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

/* 导航栏 */
.navbar {
    position: fixed;
    top: 0;
    left: 0;
    right: 0;
    background: rgba(255, 255, 255, 0.95);
    backdrop-filter: blur(10px);
    box-shadow: 0 2px 10px rgba(0, 0, 0, 0.05);
    z-index: 1000;
}

.nav-container {
    max-width: 1200px;
    margin: 0 auto;
    padding: 15px 20px;
    display: flex;
    justify-content: space-between;
    align-items: center;
}

.logo {
    display: flex;
    align-items: center;
    gap: 10px;
    font-size: 24px;
    font-weight: 700;
    color: var(--text-dark);
}

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

.nav-links {
    display: flex;
    gap: 30px;
}

.nav-link {
    color: var(--text-gray);
    text-decoration: none;
    font-weight: 500;
    transition: color 0.3s;
}

.nav-link:hover,
.nav-link.active {
    color: var(--primary-color);
}

/* 英雄区域 */
.hero {
    padding: 120px 20px 80px;
    background: linear-gradient(135deg, #667eea 0%, #764ba2 100%);
    color: white;
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 60px;
    align-items: center;
    max-width: 1200px;
    margin: 0 auto;
}

.hero-badge {
    display: inline-block;
    background: rgba(255, 255, 255, 0.2);
    padding: 8px 20px;
    border-radius: 20px;
    font-size: 14px;
    font-weight: 600;
    margin-bottom: 20px;
}

.hero-title {
    font-size: 48px;
    font-weight: 700;
    line-height: 1.2;
    margin-bottom: 20px;
}

.gradient-text {
    background: linear-gradient(to right, #fff, #f0f0f0);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
}

.hero-subtitle {
    font-size: 18px;
    line-height: 1.8;
    opacity: 0.9;
    margin-bottom: 40px;
}

.hero-buttons {
    display: flex;
    gap: 15px;
    margin-bottom: 50px;
}

.btn {
    padding: 14px 32px;
    border-radius: 10px;
    font-size: 16px;
    font-weight: 600;
    text-decoration: none;
    transition: all 0.3s;
    cursor: pointer;
    border: none;
    display: inline-block;
}

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

.btn-primary:hover {
    transform: translateY(-2px);
    box-shadow: 0 10px 30px rgba(0, 0, 0, 0.2);
}

.btn-secondary {
    background: transparent;
    color: white;
    border: 2px solid white;
}

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

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

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

.stat-number {
    font-size: 36px;
    font-weight: 700;
    margin-bottom: 5px;
}

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

.hero-image {
    display: flex;
    justify-content: center;
    align-items: center;
}

.phone-mockup {
    width: 300px;
    height: 600px;
    background: #1a1a1a;
    border-radius: 40px;
    padding: 15px;
    box-shadow: 0 30px 60px rgba(0, 0, 0, 0.3);
}

.phone-screen {
    width: 100%;
    height: 100%;
    background: white;
    border-radius: 30px;
    display: flex;
    align-items: center;
    justify-content: center;
}

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

.qr-icon {
    font-size: 80px;
    margin-bottom: 20px;
}

.demo-qr p {
    color: var(--text-gray);
    font-size: 16px;
}

/* 服务介绍 */
.service {
    padding: 100px 20px;
    background: white;
}

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

.section-title {
    font-size: 40px;
    font-weight: 700;
    margin-bottom: 15px;
    color: var(--text-dark);
}

.section-subtitle {
    font-size: 18px;
    color: var(--text-gray);
}

.features {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: 30px;
}

.feature-card {
    background: white;
    border: 1px solid var(--border-color);
    border-radius: 16px;
    padding: 30px;
    transition: all 0.3s;
}

.feature-card:hover {
    transform: translateY(-5px);
    box-shadow: 0 10px 30px rgba(102, 126, 234, 0.15);
    border-color: var(--primary-color);
}

.feature-icon {
    font-size: 48px;
    margin-bottom: 20px;
}

.feature-title {
    font-size: 20px;
    font-weight: 600;
    margin-bottom: 15px;
    color: var(--text-dark);
}

.feature-desc {
    color: var(--text-gray);
    line-height: 1.8;
}

/* 使用流程 */
.process {
    padding: 100px 20px;
    background: var(--bg-light);
}

.steps {
    display: flex;
    justify-content: center;
    align-items: center;
    gap: 20px;
    max-width: 1000px;
    margin: 0 auto;
}

.step {
    flex: 1;
    background: white;
    border-radius: 16px;
    padding: 40px 30px;
    text-align: center;
    position: relative;
}

.step-number {
    position: absolute;
    top: -15px;
    left: 50%;
    transform: translateX(-50%);
    width: 40px;
    height: 40px;
    background: linear-gradient(135deg, var(--primary-color), var(--secondary-color));
    color: white;
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    font-weight: 700;
    font-size: 18px;
}

.step-icon {
    font-size: 60px;
    margin-bottom: 20px;
}

.step-title {
    font-size: 20px;
    font-weight: 600;
    margin-bottom: 10px;
    color: var(--text-dark);
}

.step-desc {
    color: var(--text-gray);
}

.step-arrow {
    font-size: 30px;
    color: var(--primary-color);
    font-weight: 700;
}

/* 价格方案 */
.pricing {
    padding: 100px 20px;
    background: white;
}

.price-card {
    max-width: 500px;
    margin: 0 auto;
    background: white;
    border: 2px solid var(--primary-color);
    border-radius: 24px;
    padding: 50px 40px;
    position: relative;
    box-shadow: 0 20px 60px rgba(102, 126, 234, 0.15);
}

.price-badge {
    position: absolute;
    top: -15px;
    left: 50%;
    transform: translateX(-50%);
    background: linear-gradient(135deg, var(--primary-color), var(--secondary-color));
    color: white;
    padding: 8px 24px;
    border-radius: 20px;
    font-size: 14px;
    font-weight: 600;
}

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

.price-title {
    font-size: 24px;
    font-weight: 600;
    margin-bottom: 20px;
    color: var(--text-dark);
}

.price-amount {
    display: flex;
    align-items: baseline;
    justify-content: center;
    gap: 5px;
    margin-bottom: 10px;
}

.price-currency {
    font-size: 24px;
    font-weight: 600;
    color: var(--text-gray);
}

.price-number {
    font-size: 72px;
    font-weight: 700;
    color: var(--primary-color);
}

.price-period {
    font-size: 18px;
    color: var(--text-gray);
}

.price-subtitle {
    color: var(--text-gray);
}

.price-features {
    list-style: none;
    margin-bottom: 40px;
}

.price-feature {
    display: flex;
    align-items: center;
    gap: 12px;
    padding: 12px 0;
    border-bottom: 1px solid var(--border-color);
}

.price-feature:last-child {
    border-bottom: none;
}

.feature-check {
    color: var(--success-color);
    font-weight: 700;
    font-size: 18px;
}

.btn-buy {
    width: 100%;
    background: linear-gradient(135deg, var(--primary-color), var(--secondary-color));
    color: white;
    padding: 16px;
    font-size: 18px;
}

.btn-buy:hover {
    transform: translateY(-2px);
    box-shadow: 0 10px 30px rgba(102, 126, 234, 0.3);
}

.price-note {
    text-align: center;
    color: var(--text-gray);
    font-size: 14px;
    margin-top: 20px;
}

/* 常见问题 */
.faq {
    padding: 100px 20px;
    background: var(--bg-light);
}

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

.faq-item {
    background: white;
    border-radius: 12px;
    padding: 25px;
    margin-bottom: 15px;
}

.faq-question {
    font-size: 18px;
    font-weight: 600;
    color: var(--text-dark);
    margin-bottom: 10px;
}

.faq-answer {
    color: var(--text-gray);
    line-height: 1.8;
}

/* 联系我们 */
.contact {
    padding: 100px 20px;
    background: white;
}

.contact-info {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: 30px;
    max-width: 900px;
    margin: 0 auto;
}

.contact-item {
    display: flex;
    align-items: center;
    gap: 20px;
    background: var(--bg-light);
    padding: 30px;
    border-radius: 12px;
}

.contact-icon {
    font-size: 40px;
}

.contact-label {
    font-size: 14px;
    color: var(--text-gray);
    margin-bottom: 5px;
}

.contact-value {
    font-size: 16px;
    font-weight: 600;
    color: var(--text-dark);
}

/* 页脚 */
.footer {
    background: #1a202c;
    color: white;
    padding: 60px 20px 30px;
}

.footer-content {
    display: grid;
    grid-template-columns: 2fr 1fr;
    gap: 60px;
    margin-bottom: 40px;
}

.footer-brand {
    max-width: 400px;
}

.footer-logo {
    display: flex;
    align-items: center;
    gap: 10px;
    font-size: 24px;
    font-weight: 700;
    margin-bottom: 15px;
}

.footer-desc {
    color: #a0aec0;
    line-height: 1.8;
}

.footer-links {
    display: flex;
    gap: 60px;
}

.footer-column h4 {
    font-size: 16px;
    font-weight: 600;
    margin-bottom: 15px;
}

.footer-column a {
    display: block;
    color: #a0aec0;
    text-decoration: none;
    margin-bottom: 10px;
    transition: color 0.3s;
}

.footer-column a:hover {
    color: white;
}

.footer-bottom {
    padding-top: 30px;
    border-top: 1px solid #2d3748;
    display: flex;
    justify-content: space-between;
    align-items: center;
    flex-wrap: wrap;
    gap: 15px;
}

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

.footer-beian {
    font-size: 14px;
}

.footer-beian a {
    color: #a0aec0;
    text-decoration: none;
    transition: color 0.3s;
}

.footer-beian a:hover {
    color: white;
}

.separator {
    margin: 0 10px;
    color: #4a5568;
}

/* 悬浮购买按钮 */
.floating-buy {
    position: fixed;
    bottom: 30px;
    right: 30px;
    z-index: 999;
    opacity: 0;
    transform: translateY(20px);
    transition: all 0.3s;
}

.floating-buy.show {
    opacity: 1;
    transform: translateY(0);
}

.btn-floating {
    background: linear-gradient(135deg, var(--primary-color), var(--secondary-color));
    color: white;
    padding: 16px 32px;
    border-radius: 50px;
    font-size: 16px;
    font-weight: 600;
    box-shadow: 0 10px 30px rgba(102, 126, 234, 0.4);
    border: none;
    cursor: pointer;
    transition: all 0.3s;
}

.btn-floating:hover {
    transform: translateY(-3px);
    box-shadow: 0 15px 40px rgba(102, 126, 234, 0.5);
}

/* 响应式设计 */
@media (max-width: 968px) {
    .hero {
        grid-template-columns: 1fr;
        text-align: center;
        padding: 100px 20px 60px;
    }
    
    .hero-image {
        display: none;
    }
    
    .hero-title {
        font-size: 36px;
    }
    
    .hero-buttons {
        justify-content: center;
    }
    
    .hero-stats {
        justify-content: center;
    }
    
    .features {
        grid-template-columns: 1fr;
    }
    
    .steps {
        flex-direction: column;
    }
    
    .step-arrow {
        transform: rotate(90deg);
    }
    
    .contact-info {
        grid-template-columns: 1fr;
    }
    
    .footer-content {
        grid-template-columns: 1fr;
    }
    
    .nav-links {
        display: none;
    }
}

@media (max-width: 768px) {
    .section-title {
        font-size: 32px;
    }
    
    .hero-title {
        font-size: 28px;
    }
    
    .price-number {
        font-size: 56px;
    }
    
    .floating-buy {
        bottom: 20px;
        right: 20px;
    }
    
    .btn-floating {
        padding: 14px 24px;
        font-size: 14px;
    }
}