/* 全局样式 */
:root {
    --primary-color: #4a86e8;
    --secondary-color: #6c757d;
    --light-color: #f8f9fa;
    --dark-color: #343a40;
    --success-color: #28a745;
    --danger-color: #dc3545;
    --warning-color: #ffc107;
    --info-color: #17a2b8;
    --font-primary: 'PingFang SC', 'Microsoft YaHei', sans-serif;
    --transition: all 0.3s ease;
}

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

body {
    font-family: var(--font-primary);
    line-height: 1.6;
    color: var(--dark-color);
    background-color: #fff;
}

.container {
    width: 100%;
    max-width: 1200px;
    margin: 0 auto;
    padding: 0 15px;
}

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

.nav .btns {
    display: flex;
    align-items: center;
}

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

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

a:hover {
    color: #3a6fbf;
}

.btn {
    display: inline-block;
    padding: 10px 20px;
    border-radius: 4px;
    font-weight: 500;
    text-align: center;
    cursor: pointer;
    transition: var(--transition);
    border: 1px solid transparent;
}

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

.btn-primary:hover {
    background-color: #3a6fbf;
    color: white;
}

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

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

.section-title {
    text-align: center;
    margin-bottom: 40px;
    font-size: 32px;
    font-weight: 600;
    color: var(--dark-color);
    position: relative;
}

.section-title:after {
    content: '';
    display: block;
    width: 60px;
    height: 3px;
    background-color: var(--primary-color);
    margin: 15px auto 0;
}

/* 头部样式 */
header {
    background-color: #fff;
    box-shadow: 0 2px 10px rgba(0,0,0,0.1);
    position: fixed;
    top: 0;
    left: 0;
    right: 0;
    z-index: 1000;
    transition: transform 0.3s ease;
}

header .container {
    display: flex;
    justify-content: space-between;
    align-items: center;
    padding: 15px;
}

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

.title-container .title {
   font-size: 24px;
   padding: 2px 16px;
}

.logo img {
    height: 40px;
    width: auto;
    max-height: 40px;
    object-fit: contain;
}

nav ul {
    display: flex;
    list-style: none;
}

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

nav ul li a {
    color: var(--dark-color);
    font-weight: 500;
}

nav ul li a:hover {
    color: var(--primary-color);
}

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

.btn-platform .btn:hover {
    background-color: #3a6fbf;
}

/* 移动端导航按钮 */
.mobile-toggle {
    display: none;
    font-size: 24px;
    cursor: pointer;
    color: var(--dark-color);
    transition: color 0.3s ease;
    padding: 5px 10px;
    z-index: 1001;
}

.mobile-toggle:hover {
    color: var(--primary-color);
}

/* 英雄区域样式 */
.hero {
    padding: 140px 0 80px;
    background: linear-gradient(135deg, #f5f7fa 0%, #c3cfe2 100%);
    text-align: center;
    background-size: cover;
    background-position: center;
    position: relative;
}

.hero:before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background-color: rgba(0, 0, 0, 0.5);
    z-index: 0;
}

.hero-content {
    max-width: 800px;
    margin: 0 auto;
    position: relative;
    z-index: 1;
    color: #fff;
}

.hero h1 {
    font-size: 48px;
    font-weight: 700;
    margin-bottom: 20px;
    color: #fff;
    text-shadow: 0 2px 4px rgba(0, 0, 0, 0.3);
}

.hero p {
    font-size: 20px;
    color: #fff;
    margin-bottom: 30px;
    text-shadow: 0 1px 2px rgba(0, 0, 0, 0.3);
}

.hero .btn {
    margin: 0 10px;
}

/* 特性区域样式 */
.features {
    padding: 80px 0;
    background-color: #fff;
}

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

.feature-item {
    text-align: center;
    padding: 30px;
    border-radius: 8px;
    box-shadow: 0 5px 15px rgba(0,0,0,0.05);
    transition: var(--transition);
}

.feature-item:hover {
    transform: translateY(-5px);
    box-shadow: 0 10px 25px rgba(0,0,0,0.1);
}

.feature-icon {
    width: 80px;
    height: 80px;
    margin: 0 auto 20px;
    display: flex;
    align-items: center;
    justify-content: center;
    background-color: rgba(74, 134, 232, 0.1);
    border-radius: 50%;
    overflow: hidden;
}

.feature-icon img {
    width: 40px;
    height: 40px;
    object-fit: cover;
}

.feature-item h3 {
    font-size: 20px;
    margin-bottom: 15px;
    color: var(--dark-color);
}

.feature-item p {
    color: var(--secondary-color);
}

/* 解决方案区域样式 */
.solutions {
    padding: 80px 0;
    background-color: #f8f9fa;
}

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

.solution-item {
    background-color: #fff;
    border-radius: 8px;
    box-shadow: 0 5px 15px rgba(0,0,0,0.05);
    overflow: hidden;
    transition: var(--transition);
}

.solution-item:hover {
    transform: translateY(-5px);
    box-shadow: 0 10px 25px rgba(0,0,0,0.1);
}

.solution-image {
    height: 200px;
    overflow: hidden;
}

.solution-image img {
    width: 100%;
    height: 100%;
    object-fit: cover;
    transition: transform 0.5s ease;
}

.solution-item:hover .solution-image img {
    transform: scale(1.05);
}

.solution-item h3 {
    font-size: 22px;
    margin: 20px 20px 15px;
    color: var(--dark-color);
    position: relative;
}

.solution-item p {
    color: var(--secondary-color);
    padding: 0 20px 20px;
}

/* 关于我们区域样式 */
.about {
    padding: 80px 0;
    background-color: #fff;
}

.about-content {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 40px;
    align-items: center;
}

.about-image {
    border-radius: 8px;
    overflow: hidden;
    box-shadow: 0 5px 15px rgba(0,0,0,0.1);
}

.about-image img {
    width: 100%;
    height: auto;
    display: block;
}

.about-text p {
    font-size: 16px;
    color: var(--secondary-color);
    line-height: 1.8;
    margin-bottom: 20px;
}

.about-text p:last-child {
    margin-bottom: 0;
}

/* 联系我们区域样式 */
.contact {
    padding: 80px 0;
    background-color: #f8f9fa;
}

.contact-wrapper {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 40px;
}

.contact-form {
    background-color: #fff;
    padding: 30px;
    border-radius: 8px;
    box-shadow: 0 5px 15px rgba(0,0,0,0.05);
}

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

.form-group label {
    display: block;
    margin-bottom: 5px;
    font-weight: 500;
    color: var(--dark-color);
}

.form-group input,
.form-group textarea {
    width: 100%;
    padding: 10px;
    border: 1px solid #ddd;
    border-radius: 4px;
    font-family: var(--font-primary);
}

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

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

.contact-image {
    height: 200px;
    border-radius: 8px 8px 0 0;
    overflow: hidden;
    margin-bottom: 20px;
}

.contact-image img {
    width: 100%;
    height: 100%;
    object-fit: cover;
}

.info-items {
    background-color: #fff;
    padding: 30px;
    border-radius: 0 0 8px 8px;
    box-shadow: 0 5px 15px rgba(0,0,0,0.05);
    flex-grow: 1;
}

.info-item {
    margin-bottom: 20px;
}

.info-item:last-child {
    margin-bottom: 0;
}

.info-item h3 {
    font-size: 18px;
    margin-bottom: 5px;
    color: var(--dark-color);
}

.info-item p {
    color: var(--secondary-color);
}

/* 页脚样式 */
footer {
    background-color: var(--dark-color);
    color: #fff;
    padding: 30px 0;
}

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

.copyright p {
    margin: 0;
}

.footer-links a {
    color: #fff;
    margin-left: 20px;
}

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

/* 响应式设计 */
@media (max-width: 992px) {
    .hero h1 {
        font-size: 36px;
    }

    .hero p {
        font-size: 18px;
    }

    .about-content,
    .contact-wrapper {
        grid-template-columns: 1fr;
    }

    .about-image {
        margin-bottom: 30px;
    }
}

@media (max-width: 768px) {
    .mobile-toggle {
        display: block;
    }

    nav ul {
        flex-direction: column;
        position: absolute;
        top: 70px;
        left: 0;
        right: 0;
        background-color: #fff;
        box-shadow: 0 5px 10px rgba(0,0,0,0.1);
        padding: 20px 0;
        display: none;
        opacity: 0;
        visibility: hidden;
        transform: translateY(-10px);
        transition: opacity 0.3s ease, transform 0.3s ease, visibility 0.3s ease;
        z-index: 999;
    }

    nav ul.show {
        display: block;
        opacity: 1;
        visibility: visible;
        transform: translateY(0);
    }

    nav ul li {
        margin: 0;
        text-align: center;
    }

    nav ul li a {
        display: block;
        padding: 12px 20px;
        border-bottom: 1px solid #f0f0f0;
    }

    nav ul li:last-child a {
        border-bottom: none;
    }

    .btn-platform {
        margin-top: 10px;
    }

    .btn-platform .btn {
        width: 80%;
        margin: 0 auto;
        display: block;
    }

    .hero {
        padding: 120px 0 60px;
    }

    :target {
        scroll-margin-top: 80px;
    }

    .footer-content {
        flex-direction: column;
        text-align: center;
    }

    .footer-links {
        margin-top: 20px;
    }

    .footer-links a {
        margin: 0 10px;
    }

    body.has-open-menu {
        overflow: hidden;
    }
}