/* 现代重置样式 */
* {
    margin: 0;
    padding: 0;
    box-sizing: border-box;
}

/* 全局样式 */
:root {
    --primary-color: #A3B1C6; /* 莫兰迪蓝 */
    --primary-hover: #8B9BB4; /* 深色莫兰迪蓝 */
    --secondary-color: #C3C6C7; /* 莫兰迪灰 */
    --accent-color: #D4C1AF; /* 莫兰迪粉 */
    --bg-color: #FAF7F2; /* 浅米色背景 */
    --card-bg: #FFFFFF;
    --text-color: #5A5A5A;
    --text-light: #8B8B8B;
    --border-color: #E8E5E0;
    --shadow-sm: 0 1px 2px 0 rgba(0, 0, 0, 0.05);
    --shadow-md: 0 4px 6px -1px rgba(0, 0, 0, 0.1), 0 2px 4px -1px rgba(0, 0, 0, 0.06);
    --shadow-lg: 0 10px 15px -3px rgba(0, 0, 0, 0.1), 0 4px 6px -2px rgba(0, 0, 0, 0.05);
    --shadow-xl: 0 20px 25px -5px rgba(0, 0, 0, 0.1), 0 10px 10px -5px rgba(0, 0, 0, 0.04);
    --border-radius: 8px;
    --transition: all 0.3s ease;
}

body {
    font-family: 'Inter', -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, Oxygen, Ubuntu, Cantarell, sans-serif;
    background-color: var(--bg-color);
    color: var(--text-color);
    line-height: 1.6;
    overflow-x: hidden;
}

/* 容器样式 */
.container {
    max-width: 1200px;
    margin: 0 auto;
    padding: 0 1.5rem;
}

/* 导航栏样式 */
header {
    background-color: var(--card-bg);
    box-shadow: var(--shadow-md);
    position: sticky;
    top: 0;
    z-index: 1000;
    transition: var(--transition);
}

nav {
    display: flex;
    justify-content: space-between;
    align-items: center;
    padding: 1.25rem 0;
}

.logo {
    font-size: 1.75rem;
    font-weight: 700;
    color: var(--primary-color);
    text-decoration: none;
}

.nav-links {
    display: flex;
    list-style: none;
    gap: 2.5rem;
}

.nav-links a {
    text-decoration: none;
    color: var(--text-color);
    font-weight: 500;
    transition: var(--transition);
    position: relative;
}

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

.nav-links a::after {
    content: '';
    position: absolute;
    width: 0;
    height: 2px;
    bottom: -5px;
    left: 0;
    background-color: var(--primary-color);
    transition: var(--transition);
}

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

/* 移动端导航菜单按钮 */
.mobile-menu-btn {
    display: none;
    background: none;
    border: none;
    font-size: 1.5rem;
    cursor: pointer;
    color: var(--text-color);
}

/* Contact Form Styles */
.contact-container {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 3rem;
    margin-top: 2rem;
}

.contact-form-section h2,
.contact-info-section h2 {
    color: var(--primary-color);
    margin-bottom: 1.5rem;
    font-size: 1.5rem;
    font-weight: 600;
}

.modern-form {
    background-color: white;
    padding: 2rem;
    border-radius: 12px;
    box-shadow: 0 10px 30px rgba(0, 0, 0, 0.08);
}

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

.form-group label {
    display: block;
    margin-bottom: 0.5rem;
    font-weight: 500;
    color: var(--text-color);
}

.form-input,
.form-textarea {
    width: 100%;
    padding: 12px 15px;
    border: 2px solid #e0e0e0;
    border-radius: 8px;
    font-size: 1rem;
    transition: all 0.3s ease;
    font-family: inherit;
}

.form-input:focus,
.form-textarea:focus {
    outline: none;
    border-color: var(--primary-color);
    box-shadow: 0 0 0 3px rgba(30, 64, 175, 0.1);
}

.form-textarea {
    min-height: 150px;
    resize: vertical;
}

.form-submit {
    background-color: var(--primary-color);
    color: white;
    border: none;
    padding: 12px 30px;
    border-radius: 8px;
    font-size: 1rem;
    font-weight: 600;
    cursor: pointer;
    transition: all 0.3s ease;
    width: 100%;
}

.form-submit:hover {
    background-color: var(--primary-hover);
    transform: translateY(-2px);
    box-shadow: 0 5px 15px rgba(30, 64, 175, 0.3);
}

.company-address {
    background-color: white;
    padding: 2rem;
    border-radius: 12px;
    box-shadow: 0 10px 30px rgba(0, 0, 0, 0.08);
}

.company-address p {
    margin-bottom: 0.8rem;
    color: var(--text-color);
    line-height: 1.6;
}

.company-address span {
    color: var(--primary-color);
    font-weight: 500;
}

/* Case Study Styles */
.case-list {
    display: grid;
    grid-template-columns: repeat(auto-fill, minmax(350px, 1fr));
    gap: 2rem;
    margin-top: 2rem;
}

.case-item {
    background-color: white;
    border-radius: 12px;
    overflow: hidden;
    box-shadow: 0 10px 30px rgba(0, 0, 0, 0.08);
    transition: all 0.3s ease;
}

.case-item:hover {
    transform: translateY(-5px);
    box-shadow: 0 15px 40px rgba(0, 0, 0, 0.12);
}

.case-header {
    padding: 1.5rem;
    text-align: center;
    border-bottom: 1px solid #f0f0f0;
}

.case-header img {
    width: 80px;
    height: 80px;
    object-fit: contain;
    margin-bottom: 1rem;
    border-radius: 8px;
}

.case-header h3 {
    color: var(--text-color);
    font-size: 1.2rem;
    font-weight: 600;
    margin: 0;
}

.case-content {
    padding: 1rem;
}

.case-screenshot {
    width: 100%;
    height: auto;
    border-radius: 8px;
    display: block;
    transition: transform 0.3s ease;
}

.case-item:hover .case-screenshot {
    transform: scale(1.05);
}

/* Footer Styles */
footer {
    background-color: #5A5A5A;
    color: white;
    padding: 4rem 0 2rem;
    margin-top: 4rem;
}

.footer-content {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(250px, 1fr));
    gap: 2rem;
    margin-bottom: 2rem;
}

.footer-section h3 {
    margin-bottom: 1rem;
    color: white;
}

.footer-section p, .footer-section a {
    color: #a1a1aa;
    text-decoration: none;
    line-height: 1.8;
}

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

.footer-bottom {
    text-align: center;
    padding-top: 2rem;
    border-top: 1px solid #374151;
    color: #a1a1aa;
}

/* 轮播图样式 */
.hero-slider {
    position: relative;
    width: 100%;
    height: 600px;
    overflow: hidden;
}

.slider-container {
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
}

.slide {
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background-size: cover;
    background-position: center;
    opacity: 0;
    transition: opacity 0.5s ease-in-out;
}

.slide.active {
    opacity: 1;
}

.slider-content {
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    display: flex;
    align-items: center;
    justify-content: center;
    text-align: center;
    color: white;
    z-index: 10;
}

.slider-content h1 {
    font-size: 3rem;
    font-weight: 700;
    margin-bottom: 1.5rem;
    line-height: 1.2;
    text-shadow: 2px 2px 4px rgba(0, 0, 0, 0.5);
}

.slider-content p {
    font-size: 1.25rem;
    margin-bottom: 2rem;
    opacity: 0.9;
    text-shadow: 1px 1px 2px rgba(0, 0, 0, 0.5);
}

.slider-controls {
    position: absolute;
    top: 50%;
    left: 0;
    width: 100%;
    display: flex;
    justify-content: space-between;
    padding: 0 20px;
    transform: translateY(-50%);
    z-index: 20;
}

.prev-btn, .next-btn {
    background: rgba(255, 255, 255, 0.3);
    border: none;
    color: white;
    font-size: 2rem;
    width: 50px;
    height: 50px;
    border-radius: 50%;
    cursor: pointer;
    display: flex;
    align-items: center;
    justify-content: center;
    transition: background 0.3s ease;
    text-shadow: 1px 1px 2px rgba(0, 0, 0, 0.5);
}

.prev-btn:hover, .next-btn:hover {
    background: rgba(255, 255, 255, 0.5);
}

.slider-dots {
    position: absolute;
    bottom: 20px;
    left: 0;
    width: 100%;
    display: flex;
    justify-content: center;
    gap: 10px;
    z-index: 20;
}

.dot {
    width: 12px;
    height: 12px;
    border-radius: 50%;
    background: rgba(255, 255, 255, 0.5);
    cursor: pointer;
    transition: background 0.3s ease;
}

.dot.active {
    background: white;
    width: 14px;
    height: 14px;
}

.cta-button {
    display: inline-block;
    padding: 0.875rem 2rem;
    background-color: white;
    color: var(--primary-color);
    text-decoration: none;
    border-radius: var(--border-radius);
    font-weight: 600;
    transition: var(--transition);
    box-shadow: var(--shadow-md);
}

.cta-button:hover {
    transform: translateY(-2px);
    box-shadow: var(--shadow-lg);
}

/* 卡片样式 */
.card {
    background-color: var(--card-bg);
    border-radius: var(--border-radius);
    box-shadow: var(--shadow-md);
    overflow: hidden;
    transition: var(--transition);
}

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

.card-image {
    width: 100%;
    height: auto;
    object-fit: cover;
}

.card-content {
    padding: 1.5rem;
}

.icon-container {
    width: 60px;
    height: 60px;
    border-radius: 50%;
    background: linear-gradient(135deg, var(--primary-color), var(--primary-hover));
    display: flex;
    align-items: center;
    justify-content: center;
    margin-bottom: 1rem;
    color: white;
    font-size: 1.5rem;
    box-shadow: var(--shadow-md);
}

.card-title {
    font-size: 1.25rem;
    font-weight: 600;
    margin-bottom: 0.75rem;
    color: var(--text-color);
}

.card-text {
    color: var(--text-light);
    margin-bottom: 1rem;
}

/* 网格布局 */
.grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
    gap: 2rem;
}

/* 服务列表样式 */
.service-list {
    display: flex;
    flex-direction: column;
    gap: 2rem;
}

.service-item {
    display: grid;
    grid-template-columns: 200px 1fr;
    gap: 2rem;
    padding: 2rem;
    background-color: var(--card-bg);
    border-radius: var(--border-radius);
    box-shadow: var(--shadow-md);
    transition: var(--transition);
    align-items: start;
}

.service-item:hover {
    box-shadow: var(--shadow-lg);
}

.service-item img {
    width: 100%;
    height: auto;
    max-height: 250px;
    object-fit: contain;
    border-radius: var(--border-radius);
    background-color: var(--card-bg);
    display: block;
    margin: 0 auto;
}

.service-content h3 {
    font-size: 1.5rem;
    font-weight: 600;
    margin-bottom: 1rem;
    color: var(--text-color);
}

.service-content p {
    color: var(--text-light);
    line-height: 1.7;
}

/* 联系表单样式 */
.contact-section {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 3rem;
    align-items: start;
}

.contact-form {
    background-color: var(--card-bg);
    padding: 2rem;
    border-radius: var(--border-radius);
    box-shadow: var(--shadow-md);
}

.contact-form h3 {
    margin-bottom: 1.5rem;
    font-size: 1.5rem;
    color: var(--text-color);
}

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

.form-group label {
    display: block;
    margin-bottom: 0.5rem;
    font-weight: 500;
    color: var(--text-color);
}

.form-group input, .form-group textarea {
    width: 100%;
    padding: 0.875rem;
    border: 1px solid var(--border-color);
    border-radius: var(--border-radius);
    font-size: 1rem;
    transition: var(--transition);
}

.form-group input:focus, .form-group textarea:focus {
    outline: none;
    border-color: var(--primary-color);
    box-shadow: 0 0 0 3px rgba(163, 177, 198, 0.1);
}

.form-group textarea {
    resize: vertical;
    min-height: 150px;
}

.submit-button {
    display: inline-block;
    padding: 0.875rem 2rem;
    background-color: var(--primary-color);
    color: white;
    border: none;
    border-radius: var(--border-radius);
    font-weight: 600;
    cursor: pointer;
    transition: var(--transition);
}

.submit-button:hover {
    background-color: var(--primary-hover);
    transform: translateY(-2px);
    box-shadow: var(--shadow-lg);
}



/* 响应式设计 */
@media (max-width: 768px) {
    .nav-links {
        position: fixed;
        top: 0;
        right: -100%;
        flex-direction: column;
        background-color: var(--card-bg);
        width: 80%;
        height: 100vh;
        padding: 3rem 1.5rem;
        box-shadow: var(--shadow-xl);
        transition: var(--transition);
    }

    .nav-links.active {
        right: 0;
    }

    .mobile-menu-btn {
        display: block;
    }

    .hero h1 {
        font-size: 2rem;
    }

    .hero p {
        font-size: 1rem;
    }

    .service-item {
        grid-template-columns: 1fr;
    }

    .service-item img {
        height: 200px;
    }

    .contact-section {
        grid-template-columns: 1fr;
    }
}

@media (max-width: 480px) {
    .container {
        padding: 0 1rem;
    }

    .hero {
        padding: 4rem 0;
    }

    .hero h1 {
        font-size: 1.75rem;
    }

    .grid {
        grid-template-columns: 1fr;
    }
}

/* 动画效果 */
@keyframes fadeInUp {
    from {
        opacity: 0;
        transform: translateY(30px);
    }
    to {
        opacity: 1;
        transform: translateY(0);
    }
}

.fade-in-up {
    animation: fadeInUp 0.6s ease-out;
}

/* 页面标题样式 */
.page-title {
    font-size: 2.5rem;
    font-weight: 700;
    margin-bottom: 1rem;
    color: var(--text-color);
    text-align: center;
    margin-top: 3rem;
    position: relative;
    display: inline-block;
    padding-bottom: 0.5rem;
}

.page-title::after {
    content: '';
    position: absolute;
    bottom: 0;
    left: 50%;
    transform: translateX(-50%);
    width: 80px;
    height: 3px;
    background: linear-gradient(90deg, var(--primary-color), var(--primary-hover));
    border-radius: 2px;
}

.page-subtitle {
    font-size: 1.125rem;
    color: var(--text-light);
    text-align: center;
    margin-bottom: 3rem;
    max-width: 700px;
    margin-left: auto;
    margin-right: auto;
}

/* 面包屑导航 */
.breadcrumb {
    display: flex;
    list-style: none;
    gap: 0.5rem;
    margin: 1.5rem 0;
    color: var(--text-light);
    font-size: 0.875rem;
}

.breadcrumb a {
    color: var(--text-light);
    text-decoration: none;
    transition: var(--transition);
}

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

.breadcrumb li:not(:last-child)::after {
    content: '>';
    margin-left: 0.5rem;
}

/* 按钮样式 */
.btn {
    display: inline-block;
    padding: 0.75rem 1.5rem;
    border-radius: var(--border-radius);
    font-weight: 600;
    text-decoration: none;
    transition: var(--transition);
    border: none;
    cursor: pointer;
    font-size: 0.875rem;
}

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

.btn-primary:hover {
    background-color: var(--primary-hover);
    transform: translateY(-2px);
    box-shadow: var(--shadow-lg);
}

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

.btn-secondary:hover {
    background-color: #475569;
    transform: translateY(-2px);
    box-shadow: var(--shadow-lg);
}

/* 图片样式 */
img {
    max-width: 100%;
    height: auto;
}

/* 列表样式 */
ul, ol {
    padding-left: 1.5rem;
    margin-bottom: 1rem;
}
ul li, ol li {
    margin-bottom: 0.5rem;
    color: var(--text-light);
}

/* 分隔线 */
.divider {
    height: 1px;
    background-color: var(--border-color);
    margin: 3rem 0;
}

/* 背景色块 */
.bg-gradient {
    background: linear-gradient(135deg, rgba(163, 177, 198, 0.1) 0%, rgba(139, 155, 180, 0.1) 100%);
    padding: 4rem 0;
    margin: 4rem 0;
}

/* 辅助类 */
.text-center {
    text-align: center;
}

.mb-0 { margin-bottom: 0; }
.mb-1 { margin-bottom: 0.25rem; }
.mb-2 { margin-bottom: 0.5rem; }
.mb-3 { margin-bottom: 1rem; }
.mb-4 { margin-bottom: 1.5rem; }
.mb-5 { margin-bottom: 3rem; }

.mt-0 { margin-top: 0; }
.mt-1 { margin-top: 0.25rem; }
.mt-2 { margin-top: 0.5rem; }
.mt-3 { margin-top: 1rem; }
.mt-4 { margin-top: 1.5rem; }
.mt-5 { margin-top: 3rem; }

.p-0 { padding: 0; }
.p-1 { padding: 0.25rem; }
.p-2 { padding: 0.5rem; }
.p-3 { padding: 1rem; }
.p-4 { padding: 1.5rem; }
.p-5 { padding: 3rem; }