/* 全局样式重置 */
* {
    margin: 0;
    padding: 0;
    box-sizing: border-box;
}

/* 变量定义 */
:root {
    --primary-color: #6c5ce7;
    --primary-dark: #5a4bda;
    --secondary-color: #00cec9;
    --accent-color: #fdcb6e;
    --text-primary: #2d3436;
    --text-secondary: #636e72;
    --text-light: #b2bec3;
    --bg-primary: #ffffff;
    --bg-secondary: #f8f9fa;
    --bg-dark: #2d3436;
    --border-color: #e0e0e0;
    --shadow-sm: 0 2px 4px rgba(0, 0, 0, 0.1);
    --shadow-md: 0 4px 12px rgba(0, 0, 0, 0.15);
    --shadow-lg: 0 8px 24px rgba(0, 0, 0, 0.2);
    --gradient-primary: linear-gradient(135deg, #6c5ce7 0%, #00cec9 100%);
    --gradient-secondary: linear-gradient(135deg, #fdcb6e 0%, #e17055 100%);
    --border-radius: 8px;
    --transition: all 0.3s ease;
}

/* 基础样式 */
body {
    font-family: 'Segoe UI', Tahoma, Geneva, Verdana, sans-serif;
    line-height: 1.6;
    color: var(--text-primary);
    background-color: var(--bg-primary);
    overflow-x: hidden;
}

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

/* 标题样式 */
h1, h2, h3, h4, h5, h6 {
    font-weight: 700;
    line-height: 1.2;
    margin-bottom: 1rem;
}

h1 {
    font-size: 2.5rem;
}

h2 {
    font-size: 2.25rem;
    color: var(--text-primary);
}

h3 {
    font-size: 1.875rem;
    color: var(--text-primary);
}

h4 {
    font-size: 1.5rem;
    color: var(--text-primary);
}

/* 段落样式 */
p {
    margin-bottom: 1rem;
    color: var(--text-secondary);
}

/* 按钮样式 */
.btn {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    padding: 0.75rem 1.5rem;
    font-size: 1rem;
    font-weight: 600;
    text-decoration: none;
    border: none;
    border-radius: var(--border-radius);
    cursor: pointer;
    transition: var(--transition);
    gap: 0.5rem;
}

.btn-primary {
    background: var(--gradient-primary);
    color: white;
    box-shadow: var(--shadow-md);
}

.btn-primary:hover {
    transform: translateY(-2px);
    box-shadow: var(--shadow-lg);
}

.btn-secondary {
    background-color: transparent;
    color: var(--primary-color);
    border: 2px solid var(--primary-color);
}

.btn-secondary:hover {
    background-color: var(--primary-color);
    color: white;
    transform: translateY(-2px);
    box-shadow: var(--shadow-md);
}

.btn-large {
    padding: 1rem 2rem;
    font-size: 1.125rem;
}

.btn-block {
    width: 100%;
}

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

.navbar .container {
    display: flex;
    align-items: center;
    justify-content: space-between;
    padding: 1rem 20px;
}

.logo h1 {
    font-size: 1.5rem;
    color: var(--primary-color);
    margin: 0;
}

.nav-links {
    display: flex;
    list-style: none;
    gap: 2rem;
}

.nav-links a {
    text-decoration: none;
    color: var(--text-primary);
    font-weight: 600;
    transition: var(--transition);
    position: relative;
}

.nav-links a:hover {
    color: var(--primary-color);
}

.nav-links a::after {
    content: '';
    position: absolute;
    bottom: -5px;
    left: 0;
    width: 0;
    height: 2px;
    background: var(--gradient-primary);
    transition: var(--transition);
}

.nav-links a:hover::after {
    width: 100%;
}

.nav-actions {
    display: flex;
    gap: 1rem;
}

.menu-toggle {
    display: none;
    font-size: 1.5rem;
    cursor: pointer;
    color: var(--text-primary);
}

/* 英雄区域样式 */
.hero {
    padding: 120px 0 80px;
    background: var(--gradient-primary);
    color: white;
    position: relative;
    overflow: hidden;
}

.hero::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    background: url('data:image/svg+xml,<svg width="100" height="100" viewBox="0 0 100 100" xmlns="http://www.w3.org/2000/svg"><path d="M11 18c3.866 0 7-3.134 7-7s-3.134-7-7-7-7 3.134-7 7 3.134 7 7 7zm48 25c3.866 0 7-3.134 7-7s-3.134-7-7-7-7 3.134-7 7 3.134 7 7 7zm-43-7c1.657 0 3-1.343 3-3s-1.343-3-3-3-3 1.343-3 3 1.343 3 3 3zm63 31c1.657 0 3-1.343 3-3s-1.343-3-3-3-3 1.343-3 3 1.343 3 3 3zM34 90c1.657 0 3-1.343 3-3s-1.343-3-3-3-3 1.343-3 3 1.343 3 3 3zm56-76c1.657 0 3-1.343 3-3s-1.343-3-3-3-3 1.343-3 3 1.343 3 3 3zM12 86c2.21 0 4-1.79 4-4s-1.79-4-4-4-4 1.79-4 4 1.79 4 4 4zm28-65c2.21 0 4-1.79 4-4s-1.79-4-4-4-4 1.79-4 4 1.79 4 4 4zm23-11c2.76 0 5-2.24 5-5s-2.24-5-5-5-5 2.24-5 5 2.24 5 5 5zm-6 60c2.21 0 4-1.79 4-4s-1.79-4-4-4-4 1.79-4 4 1.79 4 4 4zm29 22c2.76 0 5-2.24 5-5s-2.24-5-5-5-5 2.24-5 5 2.24 5 5 5zM32 63c2.76 0 5-2.24 5-5s-2.24-5-5-5-5 2.24-5 5 2.24 5 5 5zm57-13c2.76 0 5-2.24 5-5s-2.24-5-5-5-5 2.24-5 5 2.24 5 5 5zm-9-21c1.105 0 2-.895 2-2s-.895-2-2-2-2 .895-2 2 .895 2 2 2zM60 91c1.105 0 2-.895 2-2s-.895-2-2-2-2 .895-2 2 .895 2 2 2zM35 41c1.105 0 2-.895 2-2s-.895-2-2-2-2 .895-2 2 .895 2 2 2zM12 60c1.105 0 2-.895 2-2s-.895-2-2-2-2 .895-2 2 .895 2 2 2z" fill="%23ffffff" fill-opacity="0.1" fill-rule="evenodd"/></svg>');
    opacity: 0.1;
}

.hero .container {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 4rem;
    align-items: center;
    position: relative;
    z-index: 1;
}

.hero-content h2 {
    font-size: 3rem;
    margin-bottom: 1.5rem;
    color: white;
}

.hero-content p {
    font-size: 1.25rem;
    margin-bottom: 2rem;
    color: rgba(255, 255, 255, 0.9);
}

.hero-buttons {
    display: flex;
    gap: 1rem;
    margin-bottom: 3rem;
}

.hero-stats {
    display: flex;
    gap: 3rem;
    padding-top: 2rem;
    border-top: 1px solid rgba(255, 255, 255, 0.2);
}

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

.stat-number {
    display: block;
    font-size: 2rem;
    font-weight: 700;
    color: white;
}

.stat-label {
    display: block;
    font-size: 0.875rem;
    color: rgba(255, 255, 255, 0.8);
    text-transform: uppercase;
    letter-spacing: 0.05em;
}

.hero-image img {
    width: 100%;
    height: auto;
    border-radius: var(--border-radius);
    box-shadow: var(--shadow-lg);
}

/* 通用区块样式 */
section {
    padding: 80px 0;
}

.section-header {
    text-align: center;
    margin-bottom: 4rem;
}

.section-header h3 {
    margin-bottom: 0.5rem;
}

.section-header p {
    font-size: 1.125rem;
    color: var(--text-secondary);
    max-width: 600px;
    margin-left: auto;
    margin-right: auto;
}

/* 产品特点样式 */
.features {
    background-color: var(--bg-secondary);
}

.features-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
    gap: 2rem;
}

.feature-card {
    background-color: white;
    padding: 2rem;
    border-radius: var(--border-radius);
    box-shadow: var(--shadow-sm);
    transition: var(--transition);
    text-align: center;
}

.feature-card:hover {
    transform: translateY(-5px);
    box-shadow: var(--shadow-md);
}

.feature-icon {
    width: 80px;
    height: 80px;
    margin: 0 auto 1.5rem;
    background: var(--gradient-primary);
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 2rem;
    color: white;
}

.feature-card h4 {
    margin-bottom: 1rem;
}

/* 核心功能样式 */
.functions-content {
    display: flex;
    flex-direction: column;
    gap: 4rem;
}

.function-item {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 3rem;
    align-items: center;
}

.function-item.reverse {
    direction: rtl;
}

.function-item.reverse .function-text {
    direction: ltr;
}

.function-image img {
    width: 70%;
    height: auto;
    border-radius: var(--border-radius);
    box-shadow: var(--shadow-md);
}

.function-text ul {
    list-style: none;
    margin-top: 1.5rem;
}

.function-text li {
    padding: 0.5rem 0;
    color: var(--text-secondary);
    display: flex;
    align-items: center;
    gap: 0.5rem;
}

.function-text li i {
    color: var(--secondary-color);
    font-size: 1.25rem;
}

/* 竞争优势样式 */
.advantages {
    background-color: var(--bg-secondary);
}

.advantages-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(350px, 1fr));
    gap: 2rem;
}

.advantage-item {
    background-color: white;
    padding: 2rem;
    border-radius: var(--border-radius);
    box-shadow: var(--shadow-sm);
    transition: var(--transition);
    position: relative;
    padding-left: 4rem;
}

.advantage-item:hover {
    transform: translateY(-5px);
    box-shadow: var(--shadow-md);
}

.advantage-number {
    position: absolute;
    left: 1rem;
    top: 1rem;
    font-size: 3rem;
    font-weight: 900;
    color: rgba(108, 92, 231, 0.1);
    line-height: 1;
}

.advantage-item h4 {
    margin-bottom: 1rem;
}

/* 客户案例样式 */
.testimonials {
    background: var(--gradient-secondary);
    color: white;
}

.testimonials .section-header h3,
.testimonials .section-header p {
    color: white;
}

.testimonials-slider {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(350px, 1fr));
    gap: 2rem;
}

.testimonial-item {
    background-color: rgba(255, 255, 255, 0.1);
    backdrop-filter: blur(10px);
    padding: 2rem;
    border-radius: var(--border-radius);
    transition: var(--transition);
}

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

.testimonial-content p {
    font-size: 1.125rem;
    font-style: italic;
    margin-bottom: 1.5rem;
    color: rgba(255, 255, 255, 0.9);
}

.testimonial-author {
    display: flex;
    align-items: center;
    gap: 1rem;
}

.testimonial-author img {
    width: 60px;
    height: 60px;
    border-radius: 50%;
    object-fit: cover;
    border: 3px solid white;
}

.author-info h5 {
    margin: 0;
    color: white;
}

.author-info p {
    margin: 0;
    font-size: 0.875rem;
    color: rgba(255, 255, 255, 0.8);
}

/* 常见问题样式 */
.faq-content {
    max-width: 800px;
    margin: 0 auto;
}

.faq-item {
    background-color: white;
    border: 1px solid var(--border-color);
    border-radius: var(--border-radius);
    margin-bottom: 1rem;
    overflow: hidden;
    transition: var(--transition);
}

.faq-item:hover {
    box-shadow: var(--shadow-sm);
}

.faq-question {
    display: flex;
    align-items: center;
    justify-content: space-between;
    padding: 1.5rem;
    cursor: pointer;
    transition: var(--transition);
    background-color: var(--bg-secondary);
}

.faq-question:hover {
    background-color: #e9ecef;
}

.faq-question h4 {
    margin: 0;
    font-size: 1.125rem;
}

.faq-question i {
    font-size: 1.25rem;
    color: var(--primary-color);
    transition: var(--transition);
}

.faq-item.active .faq-question i {
    transform: rotate(180deg);
}

.faq-answer {
    padding: 0 1.5rem;
    max-height: 0;
    overflow: hidden;
    transition: var(--transition);
}

.faq-item.active .faq-answer {
    padding: 1.5rem;
    max-height: 200px;
}

/* 联系我们样式 */
.contact {
    background-color: var(--bg-secondary);
}

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

.contact-info h3 {
    margin-bottom: 1rem;
}

.contact-details {
    display: flex;
    flex-direction: column;
    gap: 1.5rem;
    margin: 2rem 0;
}

.contact-item {
    display: flex;
    align-items: center;
    gap: 1rem;
}

.contact-item i {
    width: 40px;
    height: 40px;
    background: var(--gradient-primary);
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    color: white;
    font-size: 1.125rem;
}

.social-links {
    display: flex;
    gap: 1rem;
    margin-top: 2rem;
}

.social-links a {
    width: 45px;
    height: 45px;
    background-color: white;
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    color: var(--primary-color);
    font-size: 1.25rem;
    text-decoration: none;
    box-shadow: var(--shadow-sm);
    transition: var(--transition);
}

.social-links a:hover {
    transform: translateY(-3px);
    box-shadow: var(--shadow-md);
    background: var(--gradient-primary);
    color: white;
}

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

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

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

.form-group input:focus,
.form-group select:focus,
.form-group textarea:focus {
    outline: none;
    border-color: var(--primary-color);
    box-shadow: 0 0 0 3px rgba(108, 92, 231, 0.1);
}

/* 下载区域样式 */
.download {
    background: var(--gradient-primary);
    color: white;
    text-align: center;
}

.download h3,
.download p {
    color: white;
}

.download-buttons {
    display: flex;
    gap: 1rem;
    justify-content: center;
    margin-top: 2rem;
    flex-wrap: wrap;
}

/* 页脚样式 */
.footer {
    background-color: var(--bg-dark);
    color: white;
    padding: 4rem 0 2rem;
}

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

.footer-logo h2 {
    color: white;
    margin-bottom: 0.5rem;
}

.footer-logo p {
    color: rgba(255, 255, 255, 0.7);
    margin: 0;
}

.footer-links h4 {
    color: white;
    margin-bottom: 1rem;
    font-size: 1.125rem;
}

.footer-links ul {
    list-style: none;
}

.footer-links li {
    margin-bottom: 0.5rem;
}

.footer-links a {
    color: rgba(255, 255, 255, 0.7);
    text-decoration: none;
    transition: var(--transition);
}

.footer-links a:hover {
    color: var(--primary-color);
}

.footer-bottom {
    padding-top: 2rem;
    border-top: 1px solid rgba(255, 255, 255, 0.1);
    display: flex;
    justify-content: space-between;
    align-items: center;
    flex-wrap: wrap;
    gap: 1rem;
}

.footer-copyright p {
    color: rgba(255, 255, 255, 0.7);
    margin: 0;
}

.footer-policies {
    display: flex;
    gap: 1.5rem;
    flex-wrap: wrap;
}

.footer-policies a {
    color: rgba(255, 255, 255, 0.7);
    text-decoration: none;
    transition: var(--transition);
}

.footer-policies a:hover {
    color: var(--primary-color);
}

/* 响应式设计 */
@media (max-width: 992px) {
    .hero .container {
        grid-template-columns: 1fr;
        text-align: center;
    }
    
    .hero-stats {
        justify-content: center;
    }
    
    .function-item {
        grid-template-columns: 1fr;
        text-align: center;
    }
    
    .function-item.reverse {
        direction: ltr;
    }
    
    .contact-content {
        grid-template-columns: 1fr;
    }
    
    .download-buttons {
        flex-direction: column;
        align-items: center;
    }
}

@media (max-width: 768px) {
    h1 {
        font-size: 2rem;
    }
    
    h2 {
        font-size: 1.875rem;
    }
    
    h3 {
        font-size: 1.5rem;
    }
    
    .hero-content h2 {
        font-size: 2.25rem;
    }
    
    .nav-links {
        position: fixed;
        top: 70px;
        left: -100%;
        flex-direction: column;
        background-color: white;
        width: 100%;
        padding: 2rem;
        box-shadow: var(--shadow-md);
        transition: var(--transition);
        gap: 1rem;
    }
    
    .nav-links.active {
        left: 0;
    }
    
    .menu-toggle {
        display: block;
    }
    
    .nav-actions {
        display: none;
    }
    
    .hero-buttons {
        flex-direction: column;
        align-items: center;
    }
    
    .features-grid,
    .advantages-grid,
    .testimonials-slider {
        grid-template-columns: 1fr;
    }
    
    .footer-bottom {
        flex-direction: column;
        text-align: center;
    }
}

@media (max-width: 576px) {
    section {
        padding: 60px 0;
    }
    
    .hero {
        padding: 100px 0 60px;
    }
    
    .hero-content h2 {
        font-size: 1.875rem;
    }
    
    .hero-content p {
        font-size: 1rem;
    }
    
    .hero-stats {
        gap: 1.5rem;
    }
    
    .stat-number {
        font-size: 1.5rem;
    }
    
    .btn-large {
        padding: 0.875rem 1.5rem;
        font-size: 1rem;
    }
    
    .feature-card,
    .advantage-item {
        padding: 1.5rem;
    }
    
    .advantage-item {
        padding-left: 3rem;
    }
    
    .advantage-number {
        font-size: 2rem;
    }
}

/* 动画效果 */
@keyframes fadeInUp {
    from {
        opacity: 0;
        transform: translateY(30px);
    }
    to {
        opacity: 1;
        transform: translateY(0);
    }
}

@keyframes pulse {
    0%, 100% {
        transform: scale(1);
    }
    50% {
        transform: scale(1.05);
    }
}

@keyframes slideIn {
    from {
        transform: translateX(-100%);
    }
    to {
        transform: translateX(0);
    }
}

/* 滚动动画 */
.fade-in-up {
    animation: fadeInUp 0.6s ease-out;
}

/* 平滑滚动 */
html {
    scroll-behavior: smooth;
}

/* 加载动画 */
.loading {
    display: inline-block;
    width: 20px;
    height: 20px;
    border: 3px solid rgba(255, 255, 255, 0.3);
    border-radius: 50%;
    border-top-color: white;
    animation: spin 1s ease-in-out infinite;
}

@keyframes spin {
    to {
        transform: rotate(360deg);
    }
}