/* 全局样式设置 */
:root {
    --primary: #3366cc;
    --secondary: #4477dd;
    --dark: #333333;
    --light: #f5f5f5;
    --gray: #888888;
    --border: #dddddd;
    --success: #4caf50;
    --warning: #ff9800;
    --danger: #f44336;
    --shadow: 0 5px 15px rgba(0, 0, 0, 0.1);
    --transition: all 0.3s ease;
}

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

html {
    scroll-behavior: smooth;
}

body {
    font-family: "Microsoft YaHei", "PingFang SC", "Hiragino Sans GB", sans-serif;
    color: var(--dark);
    line-height: 1.6;
    background-color: #ffffff;
}

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

a {
    text-decoration: none;
    color: var(--primary);
    transition: var(--transition);
}

a:hover {
    color: var(--secondary);
}

ul {
    list-style: none;
}

.container {
    width: 100%;
    max-width: 1200px;
    margin: 0 auto;
    padding: 0 20px;
}

.section-title {
    font-size: 2.5rem;
    text-align: center;
    margin-bottom: 2rem;
    position: relative;
    padding-bottom: 1rem;
}

.section-title::after {
    content: '';
    position: absolute;
    bottom: 0;
    left: 50%;
    transform: translateX(-50%);
    width: 80px;
    height: 3px;
    background: var(--primary);
}

/* 按钮样式 */
.btn {
    display: inline-block;
    padding: 12px 24px;
    border-radius: 5px;
    font-weight: 600;
    text-align: center;
    transition: var(--transition);
    cursor: pointer;
    border: none;
}

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

.btn-primary:hover {
    background: var(--secondary);
    color: white;
    transform: translateY(-3px);
    box-shadow: var(--shadow);
}

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

.btn-secondary:hover {
    background: var(--primary);
    color: white;
    transform: translateY(-3px);
    box-shadow: var(--shadow);
}

.btn-outline {
    background: transparent;
    color: var(--primary);
    border: 1px solid var(--primary);
}

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

/* 头部样式 */
header {
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    background-color: white;
    box-shadow: var(--shadow);
    z-index: 1000;
    padding: 15px 0;
}

header .container {
    display: flex;
    justify-content: space-between;
    align-items: center;
}

.logo-container {
    display: flex;
    align-items: center;
}

.logo {
    width: 180px;
    height: auto;
}

nav .nav-menu {
    display: flex;
}

nav .nav-menu li {
    margin-left: 25px;
}

nav .nav-menu li a {
    color: var(--dark);
    font-weight: 500;
    padding: 5px 0;
    position: relative;
}

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

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

.mobile-menu-btn {
    display: none;
    background: none;
    border: none;
    cursor: pointer;
}

.mobile-menu-btn span {
    display: block;
    width: 25px;
    height: 3px;
    background: var(--dark);
    margin: 5px 0;
    transition: var(--transition);
}

/* 英雄区域样式 */
.hero {
    padding: 160px 0 100px;
    background: linear-gradient(to right, #f9f9f9, #e9f2ff);
}

.hero .container {
    display: flex;
    align-items: center;
    justify-content: space-between;
}

.hero-content {
    flex: 1;
    padding-right: 50px;
}

.hero-image {
    flex: 1;
    text-align: right;
}

.hero-image svg {
    max-width: 100%;
    height: auto;
}

.hero h1 {
    font-size: 3rem;
    margin-bottom: 1rem;
    color: var(--dark);
}

.hero h2 {
    font-size: 1.8rem;
    margin-bottom: 1.5rem;
    color: var(--secondary);
    font-weight: 600;
}

.hero p {
    font-size: 1.1rem;
    margin-bottom: 2rem;
    color: var(--gray);
}

.cta-buttons {
    display: flex;
    gap: 15px;
}

/* 服务区域样式 */
.services {
    padding: 100px 0;
    background-color: white;
}

.service-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(250px, 1fr));
    gap: 30px;
    margin-top: 50px;
}

.service-card {
    background: white;
    border-radius: 10px;
    padding: 30px;
    box-shadow: var(--shadow);
    transition: var(--transition);
    text-align: center;
}

.service-card:hover {
    transform: translateY(-10px);
    box-shadow: 0 10px 25px rgba(0, 0, 0, 0.15);
}

.service-icon {
    width: 80px;
    height: 80px;
    margin: 0 auto 20px;
}

.service-card h3 {
    font-size: 1.5rem;
    margin-bottom: 15px;
    color: var(--dark);
}

.service-card p {
    color: var(--gray);
    line-height: 1.6;
}

/* 关于我们样式 */
.about {
    padding: 100px 0;
    background-color: var(--light);
}

.about .container {
    display: flex;
    align-items: center;
    justify-content: space-between;
    gap: 50px;
}

.about-content {
    flex: 1;
}

.about-image {
    flex: 1;
}

.about-image svg {
    max-width: 100%;
    height: auto;
}

.about p {
    margin-bottom: 1.5rem;
    color: var(--gray);
}

.about-stats {
    display: flex;
    flex-wrap: wrap;
    gap: 30px;
    margin-top: 30px;
}

.stat-item {
    flex: 1;
    min-width: 120px;
    text-align: center;
}

.stat-number {
    font-size: 2.5rem;
    font-weight: 700;
    color: var(--primary);
    margin-bottom: 5px;
}

.stat-text {
    font-size: 1rem;
    color: var(--gray);
}

/* 案例区域样式 */
.cases {
    padding: 100px 0;
    background-color: white;
}

.case-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
    gap: 30px;
    margin-top: 50px;
}

.case-card {
    border-radius: 10px;
    overflow: hidden;
    box-shadow: var(--shadow);
    transition: var(--transition);
}

.case-card:hover {
    transform: translateY(-10px);
    box-shadow: 0 10px 25px rgba(0, 0, 0, 0.15);
}

.case-image {
    width: 100%;
    height: 200px;
    overflow: hidden;
}

.case-image svg {
    width: 100%;
    height: 100%;
    object-fit: cover;
    transition: var(--transition);
}

.case-card h3 {
    font-size: 1.5rem;
    padding: 20px 20px 10px;
    color: var(--dark);
}

.case-card p {
    padding: 0 20px 20px;
    color: var(--gray);
}

.case-more {
    text-align: center;
    margin-top: 50px;
}

/* 流程区域样式 */
.process {
    padding: 100px 0;
    background-color: var(--light);
}

.process-steps {
    max-width: 800px;
    margin: 50px auto 0;
}

.process-step {
    display: flex;
    margin-bottom: 30px;
    position: relative;
}

.step-number {
    width: 50px;
    height: 50px;
    border-radius: 50%;
    background: var(--primary);
    color: white;
    display: flex;
    justify-content: center;
    align-items: center;
    font-size: 1.5rem;
    font-weight: 700;
    margin-right: 30px;
    flex-shrink: 0;
}

.step-content {
    background: white;
    border-radius: 10px;
    padding: 25px;
    box-shadow: var(--shadow);
    flex: 1;
}

.step-content h3 {
    margin-bottom: 10px;
    color: var(--dark);
}

.step-content p {
    color: var(--gray);
}

/* 联系我们区域样式 */
.contact {
    padding: 100px 0;
    background-color: white;
}

.contact-content {
    display: flex;
    gap: 50px;
    margin-top: 50px;
}

.contact-info {
    flex: 1;
}

.contact-form {
    flex: 1;
}

.contact-info h3 {
    font-size: 1.8rem;
    margin-bottom: 20px;
    color: var(--dark);
}

.contact-info p {
    margin-bottom: 30px;
    color: var(--gray);
}

.contact-method {
    display: flex;
    align-items: center;
    margin-bottom: 20px;
}

.contact-icon {
    width: 40px;
    height: 40px;
    margin-right: 15px;
    flex-shrink: 0;
}

.contact-text {
    font-size: 1rem;
}

.form-group {
    margin-bottom: 20px;
    width: 48%;
}

.form-group.full-width {
    width: 100%;
}

form {
    display: flex;
    flex-wrap: wrap;
    justify-content: space-between;
}

form label {
    display: block;
    margin-bottom: 8px;
    font-weight: 600;
    color: var(--dark);
}

form input,
form textarea {
    width: 100%;
    padding: 12px 15px;
    border: 1px solid var(--border);
    border-radius: 5px;
    font-family: inherit;
    font-size: 1rem;
    transition: var(--transition);
}

form input:focus,
form textarea:focus {
    outline: none;
    border-color: var(--primary);
    box-shadow: 0 0 0 2px rgba(51, 102, 204, 0.2);
}

.form-submit {
    width: 100%;
    margin-top: 10px;
}

/* 底部区域样式 */
footer {
    background-color: var(--dark);
    color: white;
    padding: 70px 0 20px;
}

.footer-content {
    display: flex;
    justify-content: space-between;
    flex-wrap: wrap;
    gap: 30px;
    margin-bottom: 50px;
}

.footer-logo {
    flex: 1;
    min-width: 300px;
}

.footer-logo svg {
    width: 180px;
    height: auto;
    margin-bottom: 20px;
}

.footer-logo text {
    fill: white !important;
}

.footer-logo p {
    color: #aaa;
}

.footer-links {
    flex: 1;
    display: flex;
    justify-content: space-around;
}

.footer-links-column {
    margin-right: 20px;
}

.footer-links-column h3 {
    color: white;
    font-size: 1.2rem;
    margin-bottom: 20px;
    position: relative;
    padding-bottom: 10px;
}

.footer-links-column h3::after {
    content: '';
    position: absolute;
    bottom: 0;
    left: 0;
    width: 40px;
    height: 3px;
    background: var(--primary);
}

.footer-links-column ul li {
    margin-bottom: 10px;
}

.footer-links-column ul li a {
    color: #aaa;
    transition: var(--transition);
}

.footer-links-column ul li a:hover {
    color: white;
    padding-left: 5px;
}

.footer-bottom {
    text-align: center;
    padding-top: 20px;
    border-top: 1px solid rgba(255, 255, 255, 0.1);
    color: #aaa;
    font-size: 0.9rem;
}

/* 响应式设计 */
@media (max-width: 992px) {
    .hero {
        padding: 130px 0 80px;
    }
    
    .hero h1 {
        font-size: 2.5rem;
    }
    
    .hero h2 {
        font-size: 1.6rem;
    }
    
    .section-title {
        font-size: 2rem;
    }
    
    .about .container {
        flex-direction: column;
    }
    
    .contact-content {
        flex-direction: column;
    }
}

@media (max-width: 768px) {
    .mobile-menu-btn {
        display: block;
    }
    
    .nav-menu {
        position: fixed;
        top: 80px;
        right: -100%;
        width: 250px;
        background: white;
        height: 100vh;
        flex-direction: column;
        padding: 30px;
        box-shadow: var(--shadow);
        transition: 0.5s;
    }
    
    .nav-menu.active {
        right: 0;
    }
    
    nav .nav-menu li {
        margin-left: 0;
        margin-bottom: 20px;
    }
    
    .hero .container {
        flex-direction: column;
    }
    
    .hero-content {
        padding-right: 0;
        margin-bottom: 50px;
        text-align: center;
    }
    
    .cta-buttons {
        justify-content: center;
    }
    
    .about-stats {
        justify-content: center;
    }
    
    .footer-content {
        flex-direction: column;
    }
    
    .footer-logo {
        text-align: center;
        margin-bottom: 30px;
    }
    
    .footer-links {
        width: 100%;
        flex-wrap: wrap;
    }
    
    .footer-links-column {
        width: 48%;
        margin-bottom: 30px;
    }
}

@media (max-width: 576px) {
    .hero h1 {
        font-size: 2rem;
    }
    
    .hero h2 {
        font-size: 1.4rem;
    }
    
    .section-title {
        font-size: 1.8rem;
    }
    
    .cta-buttons {
        flex-direction: column;
        gap: 10px;
    }
    
    .form-group {
        width: 100%;
    }
    
    .footer-links-column {
        width: 100%;
    }
}