:root {
    --primary-color: #2563eb;
    --secondary-color: #1d4ed8;
    --text-color: #1f2937;
    --light-text: #ffffff;
    --background-color: #f9fafb;
    --card-background: #ffffff;
    --shadow: 0 10px 15px -3px rgba(0, 0, 0, 0.1);
    --hover-shadow: 0 20px 25px -5px rgba(0, 0, 0, 0.1);
}

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

body {
    font-family: 'PingFang SC', 'Microsoft YaHei', sans-serif;
    line-height: 1.6;
    color: var(--text-color);
    background-color: var(--background-color);
}

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

/* 导航栏样式 */
.navbar {
    background-color: rgba(255, 255, 255, 0.95);
    backdrop-filter: blur(10px);
    box-shadow: var(--shadow);
    position: fixed;
    width: 100%;
    top: 0;
    z-index: 1000;
    transition: all 0.3s ease;
}

.navbar .container {
    display: flex;
    justify-content: space-between;
    align-items: center;
    height: 70px;
}

.logo a {
    font-size: 1.5rem;
    font-weight: bold;
    color: var(--primary-color);
    text-decoration: none;
}

.nav-links a {
    color: var(--text-color);
    text-decoration: none;
    margin-left: 30px;
    transition: color 0.3s;
}

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

/* 英雄区域样式 */
.hero {
    padding: 140px 0 100px;
    background: linear-gradient(135deg, var(--primary-color), var(--secondary-color));
    color: var(--light-text);
    text-align: center;
    position: relative;
    overflow: hidden;
}

.hero::before {
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    background: url('data:image/svg+xml,<svg width="20" height="20" viewBox="0 0 20 20" xmlns="http://www.w3.org/2000/svg"><circle cx="2" cy="2" r="1" fill="rgba(255,255,255,0.1)"/></svg>') repeat;
    opacity: 0.3;
}

.hero h1 {
    font-size: 2.5rem;
    margin-bottom: 20px;
}

.hero p {
    font-size: 1.2rem;
    margin-bottom: 30px;
}

.cta-button {
    display: inline-block;
    padding: 16px 36px;
    background-color: var(--light-text);
    color: var(--primary-color);
    text-decoration: none;
    border-radius: 30px;
    font-weight: bold;
    transition: all 0.4s ease;
    box-shadow: 0 4px 6px rgba(0, 0, 0, 0.1);
}

.cta-button:hover {
    transform: translateY(-2px) scale(1.05);
    box-shadow: 0 6px 8px rgba(0, 0, 0, 0.15);
    background-color: var(--primary-color);
    color: var(--light-text);
}

/* 特征区域样式 */
.features {
    padding: 80px 0;
}

.features h2 {
    text-align: center;
    margin-bottom: 50px;
    font-size: 2rem;
}

.feature-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(250px, 1fr));
    gap: 30px;
}

.feature-card {
    background-color: var(--card-background);
    padding: 30px;
    border-radius: 15px;
    box-shadow: var(--shadow);
    text-align: center;
    transition: all 0.4s ease;
    border: 1px solid rgba(0, 0, 0, 0.05);
}

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

.feature-card i {
    font-size: 2.5rem;
    color: var(--primary-color);
    margin-bottom: 20px;
}

.feature-card h3 {
    margin-bottom: 15px;
}

/* 页脚样式 */
footer {
    background-color: var(--text-color);
    color: var(--light-text);
    padding: 50px 0 20px;
}

.footer-content {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(200px, 1fr));
    gap: 30px;
    margin-bottom: 30px;
}

.footer-section h4 {
    margin-bottom: 20px;
}

.social-links a {
    color: var(--light-text);
    font-size: 1.5rem;
    margin-right: 15px;
}

.footer-bottom {
    text-align: center;
    padding-top: 20px;
    border-top: 1px solid rgba(255, 255, 255, 0.1);
}

/* 响应式菜单按钮 */
.menu-btn {
    display: none;
    font-size: 1.5rem;
    cursor: pointer;
}

/* 响应式设计 */
@media (max-width: 768px) {
    .menu-btn {
        display: block;
    }

    .nav-links {
        position: fixed;
        top: 70px;
        left: 0;
        width: 100%;
        background-color: var(--card-background);
        flex-direction: column;
        padding: 20px 0;
        box-shadow: var(--shadow);
        transform: translateY(-150%);
        transition: transform 0.4s ease;
    }

    .nav-links.active {
        transform: translateY(0);
    }

    .nav-links a {
        display: block;
        margin: 10px 20px;
    }
}

/* 解决方案模块样式 */
.solutions {
    padding: 80px 0;
    background-color: var(--background-color);
}

.solutions h2 {
    text-align: center;
    margin-bottom: 50px;
    font-size: 2rem;
}

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

.solution-card {
    background-color: var(--card-background);
    border-radius: 15px;
    overflow: hidden;
    box-shadow: var(--shadow);
    transition: all 0.4s ease;
}

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

.solution-card img {
    width: 100%;
    height: 200px;
    object-fit: cover;
}

.solution-card h3 {
    padding: 20px 20px 10px;
}

.solution-card p {
    padding: 0 20px 20px;
}

.btn-secondary {
    display: inline-block;
    margin: 0 20px 20px;
    padding: 10px 20px;
    background-color: transparent;
    color: var(--primary-color);
    border: 2px solid var(--primary-color);
    border-radius: 30px;
    text-decoration: none;
    font-weight: bold;
    transition: all 0.3s ease;
}

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

/* 客户案例模块样式 */
.cases {
    padding: 80px 0;
}

.cases h2 {
    text-align: center;
    margin-bottom: 50px;
    font-size: 2rem;
}

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

.case-card {
    background-color: var(--card-background);
    border-radius: 15px;
    padding: 30px;
    box-shadow: var(--shadow);
    display: flex;
    flex-direction: column;
    transition: all 0.4s ease;
}

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

.case-logo {
    display: flex;
    justify-content: center;
    margin-bottom: 20px;
}

.case-logo img {
    width: 100px;
    height: 100px;
    object-fit: cover;
    border-radius: 50%;
}

.case-content h3 {
    margin-bottom: 15px;
}

.case-tag {
    display: inline-block;
    background-color: rgba(37, 99, 235, 0.1);
    color: var(--primary-color);
    padding: 5px 10px;
    border-radius: 20px;
    font-size: 0.8rem;
    margin-right: 10px;
    margin-top: 15px;
}

/* FAQ模块样式 */
.faq {
    padding: 80px 0;
    background-color: var(--background-color);
}

.faq h2 {
    text-align: center;
    margin-bottom: 50px;
    font-size: 2rem;
}

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

.faq-item {
    background-color: var(--card-background);
    border-radius: 10px;
    margin-bottom: 20px;
    box-shadow: var(--shadow);
    overflow: hidden;
}

.faq-question {
    padding: 20px;
    cursor: pointer;
    display: flex;
    justify-content: space-between;
    align-items: center;
}

.faq-question h3 {
    margin: 0;
    font-size: 1.1rem;
}

.faq-answer {
    padding: 0 20px 20px;
    display: none;
}

.faq-item.active .faq-answer {
    display: block;
}

.faq-item.active .fa-chevron-down {
    transform: rotate(180deg);
}

.fa-chevron-down {
    transition: transform 0.3s ease;
}

/* 团队模块样式 */
.team {
    padding: 80px 0;
}

.team h2 {
    text-align: center;
    margin-bottom: 20px;
    font-size: 2rem;
}

.team-intro {
    text-align: center;
    max-width: 700px;
    margin: 0 auto 50px;
}

.team-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(250px, 1fr));
    gap: 30px;
}

.team-member {
    background-color: var(--card-background);
    border-radius: 15px;
    padding: 30px;
    text-align: center;
    box-shadow: var(--shadow);
    transition: all 0.4s ease;
}

.team-member:hover {
    transform: translateY(-5px);
    box-shadow: var(--hover-shadow);
}

.team-member img {
    width: 150px;
    height: 150px;
    border-radius: 50%;
    object-fit: cover;
    margin-bottom: 20px;
}

.member-title {
    color: var(--primary-color);
    font-weight: bold;
    margin-bottom: 10px;
}

/* 联系我们模块样式 */
.contact {
    padding: 80px 0;
    background-color: var(--background-color);
}

.contact h2 {
    text-align: center;
    margin-bottom: 50px;
    font-size: 2rem;
}

.contact-container {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
    gap: 50px;
}

.contact-info {
    display: flex;
    flex-direction: column;
    justify-content: center;
}

.contact-item {
    display: flex;
    align-items: center;
    margin-bottom: 30px;
}

.contact-item i {
    font-size: 1.5rem;
    color: var(--primary-color);
    margin-right: 20px;
}

.contact-form {
    background-color: var(--card-background);
    padding: 30px;
    border-radius: 15px;
    box-shadow: var(--shadow);
}

.contact-form h3 {
    margin-bottom: 20px;
    text-align: center;
}

.form-group {
    margin-bottom: 20px;
}

.form-group input,
.form-group textarea {
    width: 100%;
    padding: 12px 15px;
    border: 1px solid #e5e7eb;
    border-radius: 8px;
    font-family: inherit;
    font-size: 1rem;
    transition: border-color 0.3s;
}

.form-group input:focus,
.form-group textarea:focus {
    outline: none;
    border-color: var(--primary-color);
}

.submit-btn {
    width: 100%;
    padding: 12px;
    background-color: var(--primary-color);
    color: var(--light-text);
    border: none;
    border-radius: 8px;
    font-size: 1rem;
    font-weight: bold;
    cursor: pointer;
    transition: background-color 0.3s;
}

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