:root {
    --primary: #2563eb;
    --primary-dark: #1d4ed8;
    --secondary: #f59e0b;
    --accent: #10b981;
    --light: #f8fafc;
    --dark: #1e293b;
    --gray: #64748b;
    --gradient-start: #2563eb;
    --gradient-end: #8b5cf6;
    --card-bg: rgba(255, 255, 255, 0.95);
    --shadow: 0 10px 25px rgba(0, 0, 0, 0.1);
    --text-primary: #1e293b;
    --text-secondary: #64748b;
    --bg-primary: #f1f5f9;
    --bg-secondary: #ffffff;
    --border-color: #e2e8f0;
}

[data-theme="dark"] {
    --text-primary: #f1f5f9;
    --text-secondary: #94a3b8;
    --bg-primary: #0f172a;
    --bg-secondary: #1e293b;
    --card-bg: rgba(30, 41, 59, 0.95);
    --border-color: #334155;
    --light: #1e293b;
    --shadow: 0 10px 25px rgba(0, 0, 0, 0.3);
}

* {
    margin: 0;
    padding: 0;
    box-sizing: border-box;
    font-family: 'Segoe UI', 'Microsoft YaHei', Tahoma, Geneva, Verdana, sans-serif;
}

body {
    background-color: var(--bg-primary);
    color: var(--text-primary);
    line-height: 1.6;
    overflow-x: hidden;
    transition: background-color 0.3s ease, color 0.3s ease;
}

.container {
    width: 90%;
    max-width: 1200px;
    margin: 0 auto;
    padding: 0 20px;
}

/* 头部样式 */
header {
    background: var(--card-bg);
    backdrop-filter: blur(10px);
    padding: 1rem 0;
    position: fixed;
    width: 100%;
    top: 0;
    z-index: 1000;
    box-shadow: var(--shadow);
    transition: all 0.3s ease;
}

header.scrolled {
    padding: 0.8rem 0;
}

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

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

.logo-text {
    font-size: 1.8rem;
    font-weight: 700;
    color: var(--primary);
    margin-left: 10px;
}

.logo-icon {
    font-size: 2.2rem;
    color: var(--primary);
}

/* 导航样式 */
.nav-links {
    display: flex;
    list-style: none;
    align-items: center;
}

.nav-links li {
    margin-left: 2rem;
    position: relative;
}

.nav-links a {
    text-decoration: none;
    color: var(--text-primary);
    font-weight: 500;
    transition: color 0.3s;
    padding: 8px 0;
}

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

.nav-links a::after {
    content: '';
    position: absolute;
    bottom: 0;
    left: 0;
    width: 0;
    height: 3px;
    background: var(--primary);
    transition: width 0.3s ease;
}

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

/* 头部控制按钮 */
.header-controls {
    display: flex;
    align-items: center;
    gap: 1rem;
}

.theme-toggle,
.lang-toggle {
    background: none;
    border: none;
    cursor: pointer;
    width: 40px;
    height: 40px;
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    transition: all 0.3s ease;
    color: var(--text-primary);
}

.theme-toggle:hover,
.lang-toggle:hover {
    background: var(--primary);
    color: white;
}

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

/* 幻灯片样式 */
.hero-slider {
    position: relative;
    height: 100vh;
    overflow: hidden;
}

.hero-slides {
    width: 100%;
    height: 100%;
    position: relative;
}

.hero-slide {
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    display: flex;
    align-items: center;
    justify-content: center;
    opacity: 0;
    transition: opacity 1s ease;
    z-index: 1;
    padding: 0 20px;
    text-align: center;
    background-size: cover;
    background-position: center;
    background-repeat: no-repeat;
}

.hero-slide::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background: rgba(0, 0, 0, 0.5);
    z-index: 1;
}

.hero-slide.active {
    opacity: 1;
    z-index: 2;
}

.hero-content {
    max-width: 900px;
    margin: 0 auto;
    position: relative;
    z-index: 3;
}

/* 每张幻灯片的不同背景图片 */
.slide-1 {
    background-image: url('https://images.unsplash.com/photo-1499951360447-b19be8fe80f5?ixlib=rb-4.0.3&ixid=M3wxMjA3fDB8MHxwaG90by1wYWdlfHx8fGVufDB8fHx8fA%3D%3D&auto=format&fit=crop&w=1740&q=80');
}

.slide-2 {
    background-image: url('https://images.unsplash.com/photo-1552664730-d307ca884978?ixlib=rb-4.0.3&ixid=M3wxMjA3fDB8MHxwaG90by1wYWdlfHx8fGVufDB8fHx8fA%3D%3D&auto=format&fit=crop&w=1740&q=80');
}

.slide-3 {
    background-image: url('https://images.unsplash.com/photo-1460925895917-afdab827c52f?ixlib=rb-4.0.3&ixid=M3wxMjA3fDB8MHxwaG90by1wYWdlfHx8fGVufDB8fHx8fA%3D%3D&auto=format&fit=crop&w=1715&q=80');
}

.slide-4 {
    background-image: url('https://images.unsplash.com/photo-1517245386807-bb43f82c33c4?ixlib=rb-4.0.3&ixid=M3wxMjA3fDB8MHxwaG90by1wYWdlfHx8fGVufDB8fHx8fA%3D%3D&auto=format&fit=crop&w=1740&q=80');
}

.slide-5 {
    background-image: url('https://images.unsplash.com/photo-1552664730-d307ca884978?ixlib=rb-4.0.3&ixid=M3wxMjA3fDB8MHxwaG90by1wYWdlfHx8fGVufDB8fHx8fA%3D%3D&auto=format&fit=crop&w=1740&q=80');
}

.hero-slide h1 {
    font-size: 3.2rem;
    margin-bottom: 1.5rem;
    line-height: 1.2;
    color: white;
    text-shadow: 2px 2px 4px rgba(0, 0, 0, 0.5);
}

.hero-slide p {
    font-size: 1.3rem;
    margin-bottom: 2.5rem;
    color: white;
    text-shadow: 1px 1px 3px rgba(0, 0, 0, 0.6);
}

.badge {
    display: inline-block;
    background: rgba(255, 255, 255, 0.2);
    padding: 0.5rem 1.5rem;
    border-radius: 50px;
    margin-bottom: 2rem;
    font-weight: 600;
    backdrop-filter: blur(10px);
    color: white;
}

.btn {
    display: inline-block;
    background: white;
    color: #2563eb;
    padding: 1rem 2.2rem;
    border-radius: 50px;
    text-decoration: none;
    font-weight: 600;
    transition: all 0.3s;
    border: none;
    cursor: pointer;
    box-shadow: 0 4px 15px rgba(0, 0, 0, 0.15);
}

.btn:hover {
    transform: translateY(-3px);
    box-shadow: 0 8px 20px rgba(0, 0, 0, 0.2);
}

.btn-secondary {
    background: transparent;
    color: white;
    border: 2px solid white;
    margin-left: 1rem;
}

.btn-secondary:hover {
    background: white;
    color: #2563eb;
}

/* 幻灯片控制按钮 */
.slider-controls {
    position: absolute;
    bottom: 30px;
    left: 0;
    right: 0;
    display: flex;
    justify-content: center;
    z-index: 10;
}

.slider-dots {
    display: flex;
    gap: 10px;
}

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

.slider-dot.active {
    background: white;
    transform: scale(1.2);
}

.slider-arrows {
    position: absolute;
    top: 50%;
    width: 100%;
    display: flex;
    justify-content: space-between;
    padding: 0 20px;
    transform: translateY(-50%);
    z-index: 10;
}

.slider-arrow {
    width: 50px;
    height: 50px;
    border-radius: 50%;
    background: rgba(255, 255, 255, 0.2);
    display: flex;
    align-items: center;
    justify-content: center;
    color: white;
    font-size: 1.5rem;
    cursor: pointer;
    transition: all 0.3s ease;
    backdrop-filter: blur(5px);
}

.slider-arrow:hover {
    background: rgba(255, 255, 255, 0.3);
}

/* 响应式设计 */
@media (max-width: 768px) {
    .hero-slide h1 {
        font-size: 2.5rem;
    }

    .hero-slide p {
        font-size: 1.1rem;
    }

    .btn {
        display: block;
        margin: 1rem auto;
        width: 80%;
    }

    .btn-secondary {
        margin-left: 0;
    }

    .slider-arrows {
        display: none;
    }
}

/* 内容区域 */
section {
    padding: 5rem 0;
}

.section-title {
    text-align: center;
    margin-bottom: 4rem;
}

.section-title h2 {
    font-size: 2.5rem;
    color: var(--text-primary);
    margin-bottom: 1rem;
    position: relative;
    display: inline-block;
}

.section-title h2::after {
    content: '';
    position: absolute;
    bottom: -15px;
    left: 50%;
    transform: translateX(-50%);
    width: 80px;
    height: 4px;
    background: var(--primary);
    border-radius: 2px;
}

.section-title p {
    color: var(--text-secondary);
    font-size: 1.2rem;
    max-width: 700px;
    margin: 1.5rem auto 0;
}

/* 服务区域 */
.services {
    background: var(--bg-secondary);
}

.services-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
    gap: 2.5rem;
}

.service-card {
    background: var(--card-bg);
    border-radius: 15px;
    overflow: hidden;
    box-shadow: var(--shadow);
    transition: transform 0.3s, box-shadow 0.3s;
    text-align: center;
    padding: 2.5rem 2rem;
    opacity: 0;
    transform: translateY(50px);
    transition: all 0.6s ease;
}

.service-card.animate {
    opacity: 1;
    transform: translateY(0);
}

.service-card:hover {
    transform: translateY(100px);
    box-shadow: 0 15px 35px rgba(0, 0, 0, 0.15);
}

.service-icon {
    font-size: 3.5rem;
    margin-bottom: 1.5rem;
    color: var(--primary);
    background: linear-gradient(135deg, var(--gradient-start), var(--gradient-end));
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    display: inline-block;
}

.service-card h3 {
    color: var(--text-primary);
    margin-bottom: 1.2rem;
    font-size: 1.5rem;
}

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

.service-features {
    list-style: none;
    margin-top: 1.5rem;
    text-align: left;
}

.service-features li {
    margin-bottom: 0.8rem;
    display: flex;
    align-items: center;
    color: var(--text-secondary);
}

.service-features i {
    color: var(--accent);
    margin-right: 10px;
}

/* 团队优势 */
.team {
    background: linear-gradient(to right, var(--bg-primary), var(--bg-secondary));
}

.team-intro {
    text-align: center;
    max-width: 800px;
    margin: 0 auto 4rem;
}

.team-intro p {
    color: var(--text-secondary);
    font-size: 1.1rem;
    line-height: 1.8;
}

.team-advantages {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
    gap: 2.5rem;
}

.advantage-card {
    background: var(--card-bg);
    border-radius: 15px;
    overflow: hidden;
    box-shadow: var(--shadow);
    transition: transform 0.3s, box-shadow 0.3s;
    text-align: center;
    padding: 2.5rem 2rem;
    opacity: 0;
    transform: translateY(50px);
    transition: all 0.6s ease;
}

.advantage-card.animate {
    opacity: 1;
    transform: translateY(0);
}

.advantage-card:hover {
    /* transform: translateY(-10px); */
    box-shadow: 0 15px 35px rgba(0, 0, 0, 0.15);
    transform: scale(2);
}

.advantage-icon {
    font-size: 3.5rem;
    margin-bottom: 1.5rem;
    color: var(--primary);
    background: linear-gradient(135deg, var(--gradient-start), var(--gradient-end));
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    display: inline-block;
}

.advantage-card h3 {
    color: var(--text-primary);
    margin-bottom: 1.2rem;
    font-size: 1.5rem;
}

.advantage-card p {
    color: var(--text-secondary);
    line-height: 1.7;
}

/* 合作伙伴区域优化 */
.partners {
    background: var(--bg-secondary);
    padding: 4rem 0;
    border-radius: 15px;
    box-shadow: var(--shadow);
}

.partners-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(180px, 1fr));
    gap: 1.5rem;
    align-items: center;
    justify-items: center;
}

.partner-card {
    background: var(--light);
    border-radius: 12px;
    padding: 1.5rem;
    text-align: center;
    transition: all 0.3s ease;
    height: 140px;
    width: 100%;
    display: flex;
    flex-direction: column;
    align-items: center;
    justify-content: center;
    box-shadow: 0 4px 8px rgba(0, 0, 0, 0.08);
}

.partner-card:hover {
    transform: translateY(-5px);
    box-shadow: 0 8px 20px rgba(0, 0, 0, 0.12);
}

.partner-logo {
    font-size: 2.2rem;
    color: var(--primary);
    margin-bottom: 0.8rem;
}

.partner-name {
    font-weight: 600;
    color: var(--text-primary);
    font-size: 0.95rem;
}

/* 控制显示偶数个项目 */
.partners-grid-container {
    position: relative;
}

.partners-grid::after {
    content: "";
    flex: auto;
}

.partners-grid {
    grid-template-columns: repeat(6, 1fr);
}

/* 响应式设计 */
@media (max-width: 1080px) {}

@media (max-width: 1200px) {
    .partners-grid {
        grid-template-columns: repeat(6, 1fr);
    }
}


@media (max-width: 992px) {
    .partners-grid {
        grid-template-columns: repeat(3, 1fr);
    }
}

@media (max-width: 768px) {
    .partners-grid {
        grid-template-columns: repeat(2, 1fr);
    }

    .partner-card {
        height: 120px;
        padding: 1.2rem;
    }

    .partner-logo {
        font-size: 1.8rem;
    }
}

@media (max-width: 480px) {
    .partners-grid {
        grid-template-columns: repeat(2, 1fr);
        gap: 1rem;
    }

    .partner-card {
        height: 110px;
        padding: 1rem;
    }

    .partner-logo {
        font-size: 1.6rem;
        margin-bottom: 0.5rem;
    }

    .partner-name {
        font-size: 0.85rem;
    }
}


/* 案例展示 */
.cases {
    background: linear-gradient(to right, var(--bg-primary), var(--bg-secondary));
}

.case-filters {
    display: flex;
    justify-content: center;
    flex-wrap: wrap;
    gap: 1rem;
    margin-bottom: 3rem;
}

.filter-btn {
    padding: 0.7rem 1.5rem;
    background: var(--bg-secondary);
    border: 1px solid var(--border-color);
    border-radius: 50px;
    cursor: pointer;
    transition: all 0.3s;
    font-weight: 500;
    color: var(--text-primary);
}

.filter-btn.active,
.filter-btn:hover {
    background: var(--primary);
    color: white;
    border-color: var(--primary);
}

.case-grid {
    display: grid;
    grid-template-columns: repeat(auto-fill, minmax(350px, 1fr));
    gap: 2rem;
}

.case-card {
    background: var(--bg-secondary);
    border-radius: 15px;
    overflow: hidden;
    box-shadow: var(--shadow);
    transition: transform 0.3s;
    opacity: 0;
    transform: translateY(50px);
    transition: all 0.6s ease;
}

.case-card.animate {
    opacity: 1;
    transform: translateY(0);
}

.case-card:hover {
    transform: translateY(-5px);
}

.case-image {
    height: 200px;
    display: flex;
    align-items: center;
    justify-content: center;
    position: relative;
    overflow: hidden;
}

.case-image i {
    font-size: 4rem;
    color: white;
    z-index: 2;
}

.case-image::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    opacity: 0.8;
    z-index: 1;
}

.finance-bg::before {
    background: linear-gradient(135deg, #4338ca, #6366f1);
}

.medical-bg::before {
    background: linear-gradient(135deg, #0d9488, #14b8a6);
}

.manufacture-bg::before {
    background: linear-gradient(135deg, #b45309, #f59e0b);
}

.enterprise-bg::before {
    background: linear-gradient(135deg, #6b21a8, #a855f7);
}

.case-content {
    padding: 1.5rem;
}

.case-tag {
    display: inline-block;
    padding: 0.3rem 0.8rem;
    background: var(--light);
    color: var(--primary);
    border-radius: 50px;
    font-size: 0.8rem;
    margin-bottom: 1rem;
}

.case-content h3 {
    color: var(--text-primary);
    margin-bottom: 1rem;
    font-size: 1.3rem;
}

.case-content p {
    color: var(--text-secondary);
    line-height: 1.7;
    margin-bottom: 1.5rem;
}

.case-stats {
    display: flex;
    justify-content: space-between;
    border-top: 1px solid var(--border-color);
    padding-top: 1rem;
}

.stat {
    text-align: center;
}

.stat-value {
    font-size: 1.2rem;
    font-weight: 700;
    color: var(--primary);
}

.stat-label {
    font-size: 0.8rem;
    color: var(--text-secondary);
}

/* 案例隐藏/显示样式 */
.case-item {
    display: block;
    transition: all 0.5s ease;
}

.case-item:hover {
    transform: translateY(-5px);
    box-shadow: 0 8px 20px rgba(0, 0, 0, 0.12);
}

.case-item.hidden {
    display: none;
}

/* 联系我们 */
.contact {
    background: linear-gradient(135deg, var(--gradient-start) 0%, var(--gradient-end) 100%);
    color: white;
}

.contact a {
    color: white;
}

.contact-container {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 4rem;
}

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

.contact-info p {
    margin-bottom: 2rem;
    opacity: 0.9;
}

.contact-details {
    list-style: none;
}

.contact-details li {
    margin-bottom: 1.5rem;
    display: flex;
    align-items: center;
}

.contact-details i {
    margin-right: 15px;
    font-size: 1.2rem;
    width: 20px;
}

.contact-form {
    background: var(--bg-secondary);
    padding: 2.5rem;
    border-radius: 15px;
    color: var(--text-primary);
}

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

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

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

.form-group input,
.form-group textarea {
    width: 100%;
    padding: 1rem;
    border: 1px solid var(--border-color);
    border-radius: 8px;
    font-size: 1rem;
    background: var(--bg-primary);
    color: var(--text-primary);
}

.form-group textarea {
    min-height: 120px;
    resize: vertical;
}

.submit-btn {
    background: var(--primary);
    color: white;
    width: 100%;
    padding: 1rem;
    border: none;
    border-radius: 8px;
    font-size: 1.1rem;
    font-weight: 600;
    cursor: pointer;
    transition: background 0.3s;
}

.submit-btn:hover {
    background: var(--primary-dark);
}

/* 页脚样式 */
footer {
    background: var(--dark);
    color: white;
    padding: 4rem 0 2rem;
    text-align: center;
}

.footer-content {
    display: grid;
    grid-template-columns: 1fr;
    gap: 2rem;
    max-width: 800px;
    margin: 0 auto;
}

.footer-logo {
    font-size: 2.5rem;
    font-weight: 700;
    margin-bottom: 1rem;
    color: white;
    display: flex;
    justify-content: center;
    align-items: center;
}

.footer-logo i {
    margin-right: 10px;
}

.footer-about {
    margin-bottom: 2rem;
}

.footer-about p {
    color: #cbd5e1;
    margin-bottom: 1.5rem;
    line-height: 1.7;
    font-size: 1.1rem;
}

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

.contact-item {
    display: flex;
    flex-direction: column;
    align-items: center;
    padding: 1.5rem;
    background: rgba(255, 255, 255, 0.05);
    border-radius: 10px;
    transition: transform 0.3s;
}

.contact-item:hover {
    transform: translateY(-5px);
    background: rgba(255, 255, 255, 0.1);
}

.contact-icon {
    font-size: 2rem;
    color: var(--primary);
    margin-bottom: 1rem;
}

.contact-title {
    font-weight: 600;
    margin-bottom: 0.5rem;
    color: white;
}

.contact-detail {
    color: #cbd5e1;
}

.contact-detail a {
    color: #94a3b8;
    font-size: 0.9rem;
}

/* 社交媒体二维码样式 */
.social-links {
    display: flex;
    justify-content: center;
    gap: 1.5rem;
    margin: 2rem 0;
    position: relative;
}

.social-item {
    position: relative;
    display: inline-block;
}

.social-item .qr-code {
    position: absolute;
    bottom: 100%;
    left: 50%;
    transform: translateX(-50%) translateY(-10px);
    background: white;
    padding: 1rem;
    border-radius: 10px;
    box-shadow: 0 10px 25px rgba(0, 0, 0, 0.15);
    opacity: 0;
    visibility: hidden;
    transition: all 0.3s ease;
    z-index: 1000;
    width: 140px;
    text-align: center;
}

.social-item .qr-code::after {
    content: '';
    position: absolute;
    bottom: -8px;
    left: 50%;
    transform: translateX(-50%);
    width: 0;
    height: 0;
    border-left: 8px solid transparent;
    border-right: 8px solid transparent;
    border-top: 8px solid white;
}

.social-item .qr-code img {
    width: 100px;
    height: 100px;
    margin-bottom: 0.5rem;
    border-radius: 5px;
}

.social-item .qr-code p {
    font-size: 0.8rem;
    color: var(--dark);
    margin: 0;
    font-weight: 500;
}

.social-item:hover .qr-code {
    opacity: 1;
    visibility: visible;
    transform: translateX(-50%) translateY(0);
}

.social-links a {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    width: 50px;
    height: 50px;
    border-radius: 50%;
    background: rgba(255, 255, 255, 0.1);
    color: white;
    transition: all 0.3s;
    font-size: 1.2rem;
    text-decoration: none;
    position: relative;
}

.social-links a:hover {
    background: var(--primary);
    transform: translateY(-5px);
}

.copyright {
    padding-top: 2rem;
    margin-top: 2rem;
    border-top: 1px solid rgba(255, 255, 255, 0.1);
    color: #94a3b8;
    font-size: 0.9rem;
}

/* 返回顶部按钮 */
.back-to-top {
    position: fixed;
    bottom: 2rem;
    right: 2rem;
    width: 50px;
    height: 50px;
    border-radius: 50%;
    background: var(--primary);
    color: white;
    border: none;
    cursor: pointer;
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 1.2rem;
    box-shadow: 0 4px 15px rgba(0, 0, 0, 0.2);
    transition: all 0.3s ease;
    z-index: 999;
    opacity: 0;
    visibility: hidden;
}

.back-to-top.visible {
    opacity: 1;
    visibility: visible;
}

.back-to-top:hover {
    background: var(--primary-dark);
    transform: translateY(-3px);
}

/* 语言选择模态框 */
.modal {
    display: none;
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background: rgba(0, 0, 0, 0.5);
    z-index: 2000;
    justify-content: center;
    align-items: center;
}

.modal-content {
    background: var(--bg-secondary);
    padding: 2rem;
    border-radius: 15px;
    text-align: center;
    min-width: 300px;
    box-shadow: var(--shadow);
}

.modal h3 {
    margin-bottom: 1.5rem;
    color: var(--text-primary);
}

.lang-options {
    display: flex;
    flex-direction: column;
    gap: 1rem;
}

.lang-option {
    padding: 1rem;
    border: none;
    background: var(--primary);
    color: white;
    border-radius: 8px;
    cursor: pointer;
    transition: background 0.3s;
}

.nav-links {
    min-width: 300px;
}

.lang-option:hover {
    background: var(--primary-dark);
}

@media (max-width: 1024px) {
    #navLinks li {
        margin-left: 1rem;
    }

    #navLinks li a {
        margin-left: 0rem;
    }
}

/* 响应式设计 */
@media (max-width: 992px) {
    #navLinks li {
        margin-left: 1rem;
    }

    #navLinks li a {
        margin-left: 0rem;
    }

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

    .team-advantages,
    .services-grid,
    .partners-grid {
        grid-template-columns: repeat(auto-fit, minmax(250px, 1fr));
    }
}

@media (max-width: 768px) {
    .header-container {
        flex-wrap: wrap;
    }

    .mobile-menu-btn {
        display: block;
        order: 2;
    }

    .header-controls {
        order: 3;
        margin-left: auto;
    }

    .nav-links {
        display: none;
        flex-direction: column;
        width: 100%;
        order: 4;
        margin-top: 1rem;
        padding: 1rem 0;
        border-top: 1px solid var(--border-color);
    }

    .nav-links.active {
        display: flex;
    }

    .nav-links li {
        margin: 0.5rem 0;
        width: 100%;
        text-align: center;
    }

    .hero-slide h1 {
        font-size: 2.5rem;
    }

    .hero-slide p {
        font-size: 1.1rem;
    }

    .btn {
        display: block;
        margin: 1rem auto;
        width: 80%;
    }

    .slider-arrows {
        display: none;
    }

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

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

    .back-to-top {
        bottom: 1rem;
        right: 1rem;
        width: 45px;
        height: 45px;
    }
}

/* 动画效果 */
@keyframes fadeInUp {
    from {
        opacity: 0;
        transform: translateY(50px);
    }

    to {
        opacity: 1;
        transform: translateY(0);
    }
}

.animate {
    animation: fadeInUp 0.6s ease forwards;
}

.copyright a {
    color: #94a3b8;
    font-size: 0.9rem;
}