/* 中商达祺科技集团 - 统一样式文件 */
/* 文件名: style.css */

/* 基础样式 - 橙色主题 */
:root {
    --primary-color: #E67E22; /* 主橙色 */
    --primary-dark: #D35400;  /* 深橙色 */
    --primary-light: #F39C12; /* 浅橙色 */
    --secondary-color: #34495E; /* 深蓝灰色作为辅助色 */
    --accent-color: #F1C40F; /* 金色作为强调色 */
    --light-color: #f8f9fa;
    --dark-color: #333;
    --text-color: #444;
    --shadow: 0 5px 15px rgba(0, 0, 0, 0.08);
    --gradient: linear-gradient(135deg, var(--primary-color) 0%, var(--primary-dark) 100%);
}

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

body {
    font-family: 'Segoe UI', 'Microsoft YaHei', Arial, sans-serif;
    line-height: 1.6;
    color: var(--text-color);
    background-color: #fff;
}

.container {
    width: 90%;
    max-width: 1200px;
    margin: 0 auto;
}

section {
    padding: 80px 0;
}

.section-title {
    text-align: center;
    margin-bottom: 50px;
    position: relative;
}

.section-title h2 {
    font-size: 2.5rem;
    color: var(--primary-color);
    margin-bottom: 15px;
    font-weight: 600;
}

.section-title p {
    font-size: 1.1rem;
    color: #666;
    max-width: 700px;
    margin: 0 auto;
}

.section-title::after {
    content: '';
    display: block;
    width: 80px;
    height: 4px;
    background: var(--primary-color);
    margin: 15px auto;
    border-radius: 2px;
}

.btn {
    display: inline-block;
    padding: 12px 30px;
    background: var(--primary-color);
    color: white;
    border: none;
    border-radius: 5px;
    font-size: 1rem;
    font-weight: 500;
    cursor: pointer;
    transition: all 0.3s ease;
    text-decoration: none;
    box-shadow: 0 4px 6px rgba(230, 126, 34, 0.2);
}

.btn:hover {
    background: var(--primary-dark);
    transform: translateY(-3px);
    box-shadow: 0 6px 12px rgba(230, 126, 34, 0.3);
}

.btn-secondary {
    background: transparent;
    border: 2px solid white;
    color: white;
}

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

/* 导航栏样式 - 统一所有页面 */
header {
    background: rgba(255, 255, 255, 0.95);
    box-shadow: 0 2px 10px rgba(0, 0, 0, 0.1);
    position: fixed;
    width: 100%;
    top: 0;
    z-index: 1000;
    transition: all 0.3s ease;
}

.header-container {
    display: flex;
    justify-content: space-between;
    align-items: center;
    padding: 1rem 0;
}

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

.logo img {
    height: 60px; /* LOGO大小统一 */
    margin-right: 10px;
}

.logo-text {
    display: flex;
    flex-direction: column;
}

.logo-text .brand {
    font-size: 1.8rem; /* 品牌名称大小统一 */
    font-weight: 700;
    color: var(--primary-color);
    line-height: 1.2;
}

.logo-text .company {
    font-size: 0.85rem;
    color: #666;
}

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

nav li {
    position: relative;
    margin-left: 1.8rem;
}

nav a {
    text-decoration: none;
    color: var(--dark-color);
    font-weight: 500;
    transition: color 0.3s;
    padding: 0.5rem 0;
    position: relative;
    font-size: 1.05rem; /* 导航文字大小统一 */
}

nav a::after {
    content: '';
    position: absolute;
    width: 0;
    height: 3px; /* 橙色下划线粗细统一 */
    bottom: 0;
    left: 0;
    background-color: var(--primary-color);
    transition: width 0.3s ease;
}

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

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

.dropdown-menu {
    position: absolute;
    top: 100%;
    left: 0;
    background: white;
    box-shadow: var(--shadow);
    border-radius: 5px;
    min-width: 200px;
    opacity: 0;
    visibility: hidden;
    transform: translateY(10px);
    transition: all 0.3s ease;
    z-index: 100;
}

.dropdown:hover .dropdown-menu {
    opacity: 1;
    visibility: visible;
    transform: translateY(0);
}

.dropdown-menu li {
    margin: 0;
    width: 100%;
}

.dropdown-menu a {
    display: block;
    padding: 0.8rem 1.5rem;
    border-bottom: 1px solid #f0f0f0;
    font-size: 0.95rem; /* 下拉菜单文字大小统一 */
}

.dropdown-menu a:hover {
    background: #f8f9fa;
}

.mobile-menu-toggle {
    display: none;
    flex-direction: column;
    cursor: pointer;
}

.mobile-menu-toggle span {
    width: 25px;
    height: 3px;
    background: var(--dark-color);
    margin: 3px 0;
    transition: 0.3s;
}

/* QQ链接样式 */
.qq-link {
    color: white;
    text-decoration: none;
    transition: color 0.3s;
}

.qq-link:hover {
    color: var(--accent-color);
}

/* 页脚QQ链接样式 */
.footer-column ul li a.qq-link {
    color: #ccc;
}

.footer-column ul li a.qq-link:hover {
    color: var(--primary-color);
}

/* 英雄区域样式 - 调整为橙色渐变 */
.hero {
    background: var(--gradient);
    color: white;
    padding: 160px 0 60px;
    display: flex;
    align-items: center;
    min-height: 60vh;
    position: relative;
    overflow: hidden;
}

.hero::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background: url('data:image/svg+xml;utf8,<svg xmlns="http://www.w3.org/2000/svg" viewBox="0 0 1440 320"><path fill="%23ffffff" fill-opacity="0.1" d="M0,96L48,112C96,128,192,160,288,186.7C384,213,480,235,576,213.3C672,192,768,128,864,128C960,128,1056,192,1152,197.3C1248,203,1344,149,1392,122.7L1440,96L1440,320L1392,320C1344,320,1248,320,1152,320C1056,320,960,320,864,320C768,320,672,320,576,320C480,320,384,320,288,320C192,320,96,320,48,320L0,320Z"></path></svg>');
    background-size: cover;
    background-position: center;
}

.hero-content {
    width: 60%;
    padding-right: 2rem;
    position: relative;
    z-index: 1;
}

.hero h1 {
    font-size: 3.2rem;
    margin-bottom: 1.5rem;
    line-height: 1.2;
}

.hero p {
    font-size: 1.2rem;
    margin-bottom: 2rem;
    opacity: 0.9;
    max-width: 600px;
}

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

.hero-animation {
    width: 40%;
    height: 400px;
    position: relative;
    z-index: 1;
    display: flex;
    align-items: center;
    justify-content: center;
}

.floating-elements {
    position: relative;
    width: 100%;
    height: 100%;
}

.floating-element {
    position: absolute;
    background: rgba(255, 255, 255, 0.1);
    border-radius: 10px;
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 2rem;
    color: white;
    animation: float 6s ease-in-out infinite;
}

.element-1 {
    width: 100px;
    height: 100px;
    top: 20%;
    left: 10%;
    animation-delay: 0s;
}

.element-2 {
    width: 80px;
    height: 80px;
    top: 60%;
    left: 20%;
    animation-delay: 1s;
}

.element-3 {
    width: 120px;
    height: 120px;
    top: 40%;
    right: 10%;
    animation-delay: 2s;
}

@keyframes float {
    0%, 100% { transform: translateY(0); }
    50% { transform: translateY(-20px); }
}

/* 业务区域样式 - 调整为橙色主题 */
.services {
    background: var(--light-color);
}

.services-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(280px, 1fr));
    gap: 2rem;
}

.service-card {
    background: white;
    padding: 2.5rem 2rem;
    border-radius: 10px;
    box-shadow: var(--shadow);
    text-align: center;
    transition: transform 0.3s;
    position: relative;
    overflow: hidden;
}

.service-card::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 5px;
    background: var(--primary-color);
}

.service-card:hover {
    transform: translateY(-10px);
    box-shadow: 0 10px 20px rgba(0, 0, 0, 0.1);
}

.service-icon {
    width: 80px;
    height: 80px;
    background: #FFF3E0; /* 浅橙色背景 */
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    margin: 0 auto 1.5rem;
    font-size: 2rem;
    color: var(--primary-color);
}

.service-card h3 {
    margin-bottom: 1rem;
    color: var(--primary-color);
    font-size: 1.4rem;
}

.service-card p {
    margin-bottom: 1.5rem;
    color: #666;
}

/* 关于我们样式 */
.about-content {
    display: flex;
    align-items: center;
    gap: 3rem;
}

.about-text {
    flex: 1;
}

.about-text h3 {
    font-size: 1.8rem;
    color: var(--primary-color);
    margin-bottom: 1.5rem;
}

.about-text p {
    margin-bottom: 1.5rem;
}

.about-features {
    display: grid;
    grid-template-columns: repeat(2, 1fr);
    gap: 1.5rem;
    margin-top: 2rem;
}

.feature-item {
    display: flex;
    align-items: center;
}

.feature-icon {
    width: 40px;
    height: 40px;
    background: #FFF3E0; /* 浅橙色背景 */
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    margin-right: 1rem;
    color: var(--primary-color);
}

.about-image {
    flex: 1;
    background: var(--light-color);
    height: 400px;
    border-radius: 10px;
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 5rem;
    color: var(--primary-color);
}

/* 联系方式样式 - 调整为橙色主题 */
.contact {
    background: var(--gradient);
    color: white;
}

.contact .section-title h2, .contact .section-title p {
    color: white;
}

.contact .section-title::after {
    background: var(--accent-color);
}

.contact-content {
    display: flex;
    gap: 3rem;
}

.contact-info {
    flex: 1;
}

.contact-info h3 {
    font-size: 1.8rem;
    margin-bottom: 1.5rem;
}

.contact-details {
    margin-bottom: 2rem;
}

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

.contact-icon {
    width: 40px;
    height: 40px;
    background: rgba(255, 255, 255, 0.1);
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    margin-right: 1rem;
    font-size: 1.2rem;
}

.contact-form {
    flex: 1;
    background: rgba(255, 255, 255, 0.1);
    padding: 2rem;
    border-radius: 10px;
    backdrop-filter: blur(10px);
}

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

.form-group label {
    display: block;
    margin-bottom: 0.5rem;
}

.form-group input, .form-group textarea {
    width: 100%;
    padding: 0.8rem;
    border: 1px solid rgba(255, 255, 255, 0.3);
    border-radius: 5px;
    background: rgba(255, 255, 255, 0.1);
    color: white;
    font-size: 1rem;
}

.form-group input::placeholder, .form-group textarea::placeholder {
    color: rgba(255, 255, 255, 0.7);
}

/* QQ和企业微信样式 */
.contact-qq {
    display: flex;
    align-items: center;
    margin-top: 1rem;
}

.qywx-qr {
    margin-top: 1rem;
}

.qywx-qr img {
    width: 120px;
    height: 120px;
    border-radius: 5px;
}

/* 页脚样式 - 调整为橙色主题 */
footer {
    background: var(--dark-color);
    color: white;
    padding: 60px 0 30px;
}

.footer-content {
    display: flex;
    justify-content: space-between;
    margin-bottom: 2rem;
}

.footer-column {
    flex: 1;
    padding-right: 2rem;
}

.footer-column h3 {
    font-size: 1.2rem;
    margin-bottom: 1.5rem;
    color: var(--primary-color);
}

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

.footer-column ul li {
    margin-bottom: 0.8rem;
    font-size: 0.85rem; /* 减小字体大小避免换行 */
    white-space: nowrap; /* 防止文字换行 */
}

.footer-column ul li a {
    color: #ccc;
    text-decoration: none;
    transition: color 0.3s;
}

.footer-column ul li a:hover {
    color: var(--primary-color);
}

.footer-bottom {
    text-align: center;
    padding-top: 2rem;
    border-top: 1px solid #444;
    color: #999;
    font-size: 0.9rem;
}

/* 响应式设计 */
@media (max-width: 992px) {
    .hero {
        flex-direction: column;
        text-align: center;
        padding: 140px 0 80px;
    }
    
    .hero-content, .hero-animation {
        width: 100%;
    }
    
    .hero-content {
        padding-right: 0;
        margin-bottom: 3rem;
    }
    
    .hero h1 {
        font-size: 2.5rem;
    }
    
    .about-content {
        flex-direction: column;
    }
    
    .contact-content {
        flex-direction: column;
    }
}

@media (max-width: 768px) {
    nav {
        display: none;
    }
    
    .mobile-menu-toggle {
        display: flex;
    }
    
    nav.active {
        display: block;
        position: absolute;
        top: 100%;
        left: 0;
        width: 100%;
        background: white;
        box-shadow: 0 5px 10px rgba(0, 0, 0, 0.1);
    }
    
    nav.active ul {
        flex-direction: column;
    }
    
    nav.active li {
        margin: 0;
        width: 100%;
    }
    
    nav.active a {
        display: block;
        padding: 1rem 2rem;
        border-bottom: 1px solid #f0f0f0;
    }
    
    .dropdown-menu {
        position: static;
        box-shadow: none;
        border-radius: 0;
        opacity: 1;
        visibility: visible;
        transform: none;
    }
    
    .hero h1 {
        font-size: 2rem;
    }
    
    .hero-buttons {
        flex-direction: column;
        align-items: center;
    }
    
    .btn {
        width: 100%;
        max-width: 300px;
    }
    
    .footer-content {
        flex-direction: column;
    }
    
    .footer-column {
        margin-bottom: 2rem;
        padding-right: 0;
    }
    
    .footer-column ul li {
        white-space: normal; /* 在移动设备上允许换行 */
    }
}