/* 全局样式 */
:root {
    --primary-color: #2ecc71;
    --secondary-color: #27ae60;
    --dark-color: #2c3e50;
    --light-color: #ecf0f1;
    --text-color: #333;
    --gray-color: #95a5a6;
    --box-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: 'Segoe UI', 'PingFang SC', 'Hiragino Sans GB', 'Microsoft YaHei', Arial, sans-serif;
    line-height: 1.6;
    color: var(--text-color);
    background-color: #fff;
}

h1, h2, h3, h4, h5, h6 {
    font-weight: 700;
    line-height: 1.2;
    margin-bottom: 15px;
}

p {
    margin-bottom: 15px;
}

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

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

ul {
    list-style: none;
}

img {
    max-width: 100%;
    height: auto;
}

section {
    padding: 80px 0;
}

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

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

.section-header h2 {
    font-size: 2.5rem;
    color: var(--dark-color);
    position: relative;
    padding-bottom: 15px;
}

.section-header h2::after {
    content: '';
    position: absolute;
    bottom: 0;
    left: 50%;
    transform: translateX(-50%);
    width: 80px;
    height: 3px;
    background-color: var(--primary-color);
}

.section-header p {
    font-size: 1.1rem;
    color: var(--gray-color);
    max-width: 700px;
    margin: 0 auto;
}

/* 按钮样式 */
.btn-primary {
    display: inline-block;
    padding: 12px 30px;
    background-color: var(--primary-color);
    color: white;
    border-radius: 5px;
    font-weight: 600;
    transition: var(--transition);
    border: none;
    cursor: pointer;
}

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

.btn-secondary {
    display: inline-block;
    padding: 12px 30px;
    background-color: transparent;
    color: var(--dark-color);
    border: 2px solid var(--primary-color);
    border-radius: 5px;
    font-weight: 600;
    transition: var(--transition);
    cursor: pointer;
}

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

.btn-text {
    color: var(--primary-color);
    font-weight: 600;
    display: inline-flex;
    align-items: center;
    transition: var(--transition);
}

.btn-text i {
    margin-left: 5px;
    transition: var(--transition);
}

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

.btn-text:hover i {
    transform: translateX(5px);
}

/* 导航栏样式 */
header {
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    padding: 8px 0;
    background-color: white;
    box-shadow: 0 2px 15px rgba(0, 0, 0, 0.05);
    z-index: 1000;
    transition: all 0.3s ease;
}

header.scrolled {
    padding: 5px 0;
    box-shadow: 0 5px 20px rgba(0, 0, 0, 0.1);
}

header .container {
    display: flex;
    align-items: center;
    justify-content: space-between;
    padding: 8px 20px;
    position: relative;
}

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

.logo img {
    max-height: 40px;
    width: auto;
    display: block;
}

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

nav {
    display: flex;
    justify-content: flex-end;
    align-items: center;
    transition: var(--transition);
}

nav ul.main-menu {
    display: flex;
    align-items: center;
}

nav ul.contact-menu {
    display: flex;
    align-items: center;
    margin-left: 30px;
}

nav ul li {
    margin-left: 30px;
}

nav ul.main-menu li:first-child {
    margin-left: 0;
}

nav ul.contact-menu li {
    margin-left: 0;
}

nav ul li a {
    color: var(--dark-color);
    font-weight: 500;
    font-size: 1rem;
    padding: 5px 0;
    position: relative;
}

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

nav ul li a:hover::after,
nav ul li a.active::after {
    width: 100%;
}

nav ul.contact-menu li a.btn-primary {
    padding: 6px 18px;
}

.menu-toggle {
    display: none;
    font-size: 1.5rem;
    cursor: pointer;
}

/* 页脚样式 */
footer {
    background-color: var(--dark-color);
    color: white;
    padding: 80px 0 0;
}

.footer-content {
    display: grid;
    grid-template-columns: 1fr 3fr;
    gap: 50px;
}

.footer-logo h2 {
    font-size: 1.8rem;
    margin-bottom: 10px;
}

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

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

.link-group h3 {
    font-size: 1.2rem;
    margin-bottom: 20px;
    position: relative;
    padding-bottom: 10px;
}

.link-group h3::after {
    content: '';
    position: absolute;
    left: 0;
    bottom: 0;
    width: 30px;
    height: 2px;
    background-color: var(--primary-color);
}

.link-group ul li {
    margin-bottom: 10px;
}

.link-group ul li a {
    color: #ccc;
    transition: var(--transition);
}

.link-group ul li a:hover {
    color: var(--primary-color);
    padding-left: 5px;
}

.footer-contact-info p {
    display: flex;
    align-items: center;
    margin-bottom: 15px;
    color: #ccc;
}

.footer-contact-info p i {
    margin-right: 10px;
    color: var(--primary-color);
    width: 20px;
}

.social-links {
    display: flex;
    gap: 15px;
    margin-top: 20px;
}

.social-links a {
    width: 35px;
    height: 35px;
    display: flex;
    align-items: center;
    justify-content: center;
    background-color: rgba(255, 255, 255, 0.1);
    border-radius: 50%;
    color: white;
    transition: var(--transition);
}

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

.footer-bottom {
    text-align: center;
    padding: 20px 0;
    margin-top: 60px;
    border-top: 1px solid rgba(255, 255, 255, 0.1);
}

.footer-bottom p {
    margin-bottom: 0;
    color: #ccc;
}

.copyright-link {
    font-size: 0.85rem;
    color: #aaa;
    text-decoration: none;
    transition: var(--transition);
}

.copyright-link:hover {
    color: var(--primary-color);
}

/* CTA区域样式 */
.cta {
    background-color: var(--primary-color);
    color: white;
    padding: 60px 0;
    text-align: center;
}

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

.cta-content h2 {
    font-size: 2.2rem;
    margin-bottom: 15px;
}

.cta-content p {
    font-size: 1.1rem;
    margin-bottom: 30px;
    opacity: 0.9;
}

.cta .btn-primary {
    background-color: white;
    color: var(--primary-color);
    padding: 15px 35px;
    font-size: 1.1rem;
    border-radius: 5px;
    font-weight: 600;
    transition: var(--transition);
}

.cta .btn-primary:hover {
    background-color: var(--dark-color);
    color: white;
    transform: translateY(-3px);
}

/* 响应式设计 */
@media (max-width: 991px) {
    section {
        padding: 60px 0;
    }
    
    .section-header {
        margin-bottom: 40px;
    }
    
    .section-header h2 {
        font-size: 2.2rem;
    }
    
    .footer-content {
        grid-template-columns: 1fr;
        gap: 40px;
    }
    
    .footer-links {
        grid-template-columns: repeat(2, 1fr);
    }
}

@media (max-width: 768px) {
    .menu-toggle {
        display: block;
        margin-left: 20px;
        cursor: pointer;
        z-index: 1001;
    }
    
    nav {
        position: fixed;
        top: 56px;
        left: 0;
        width: 100%;
        background-color: white;
        padding: 15px;
        box-shadow: 0 10px 15px rgba(0, 0, 0, 0.1);
        transform: translateY(-150%);
        transition: var(--transition);
        z-index: 999;
        flex-direction: column;
        justify-content: flex-start;
    }
    
    nav.active {
        transform: translateY(0);
    }
    
    body.menu-open {
        overflow: hidden;
    }
    
    nav ul.main-menu,
    nav ul.contact-menu {
        flex-direction: column;
        align-items: flex-start;
        width: 100%;
    }
    
    nav ul.contact-menu {
        margin-top: 15px;
        margin-left: 0;
        border-top: 1px solid rgba(0, 0, 0, 0.05);
        padding-top: 15px;
    }
    
    nav ul li {
        margin: 0 0 15px 0;
        width: 100%;
    }
    
    nav ul li:last-child {
        margin-bottom: 0;
    }
    
    nav ul li a {
        display: block;
        width: 100%;
        padding: 8px 0;
    }
    
    nav ul.contact-menu li a {
        display: inline-block;
        width: auto;
        text-align: center;
    }
    
    .footer-links {
        grid-template-columns: 1fr;
    }
}

@media (max-width: 576px) {
    .section-header h2 {
        font-size: 1.8rem;
    }
}