:root {
    --primary-color: #1a3a6c;
    --secondary-color: #2c5cc5;
    --accent-color: #4a86ff;
    --light-color: #f5f8ff;
    --text-color: #333;
    --text-light: #666;
    --background-dark: #0a192f;
    --border-radius: 15px;
    --box-shadow: 0 10px 30px rgba(0, 0, 0, 0.05);
    --transition: all 0.3s ease;
}

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

html {
    scroll-behavior: smooth;
}

body {
    background-color: #f8fafc;
    color: var(--text-color);
    line-height: 1.6;
    overflow-x: hidden;
}

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

/* 语言切换按钮 */
.language-switcher {
    position: relative;
    display: inline-flex;
    align-items: center;
    margin-left: 15px;
}

.language-btn {
    background: transparent;
    border: 1px solid var(--accent-color);
    color: var(--accent-color);
    padding: 8px 15px;
    border-radius: 20px;
    cursor: pointer;
    display: flex;
    align-items: center;
    gap: 8px;
    font-size: 14px;
    transition: var(--transition);
    z-index: 1002;
    position: relative;
    text-decoration: none;
}

.language-btn:hover,
.language-btn:focus {
    background: var(--accent-color);
    color: white;
    outline: 2px solid var(--accent-color);
    outline-offset: 2px;
}

/* 顶部导航栏 */
header {
    background-color: white;
    box-shadow: 0 2px 15px rgba(0, 0, 0, 0.05);
    position: sticky;
    top: 0;
    z-index: 1000;
}

.navbar {
    display: flex;
    justify-content: space-between;
    align-items: center;
    padding: 20px 0;
}

.logo {
    display: flex;
    align-items: center;
    gap: 10px;
}

.logo-icon {
    background: linear-gradient(135deg, var(--secondary-color), var(--accent-color));
    color: white;
    width: 40px;
    height: 40px;
    border-radius: 10px;
    display: flex;
    align-items: center;
    justify-content: center;
    font-weight: bold;
    font-size: 18px;
}

.logo-text {
    font-size: 24px;
    font-weight: 700;
    color: var(--primary-color);
}

.logo-text span {
    color: var(--accent-color);
}

.nav-links {
    display: flex;
    gap: 30px;
}

.nav-links a {
    text-decoration: none;
    color: var(--text-color);
    font-weight: 500;
    transition: var(--transition);
    position: relative;
    cursor: pointer;
    padding: 8px 0;
}

.nav-links a:hover,
.nav-links a:focus {
    color: var(--accent-color);
    outline: none;
}

.nav-links a::after {
    content: '';
    position: absolute;
    bottom: -5px;
    left: 0;
    width: 0;
    height: 2px;
    background-color: var(--accent-color);
    transition: width 0.3s ease;
}

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

.nav-cta {
    display: flex;
    gap: 15px;
    align-items: center;
}

/* 首页大图 */
.hero {
    padding: 100px 0;
    background: linear-gradient(135deg, #e6f0ff 0%, #f0f7ff 100%);
    position: relative;
    overflow: hidden;
    min-height: 600px;
}

.hero::before {
    content: '';
    position: absolute;
    top: -50%;
    right: -10%;
    width: 600px;
    height: 600px;
    border-radius: 50%;
    background: radial-gradient(circle, rgba(74, 134, 255, 0.1) 0%, rgba(255, 255, 255, 0) 70%);
    z-index: 0;
}

.hero-content {
    position: relative;
    z-index: 1;
    display: flex;
    align-items: center;
    gap: 50px;
}

.hero-text {
    flex: 1;
    position: relative;
}

.section-icon {
    margin-bottom: 20px;
}

.section-icon svg {
    width: 48px;
    height: 48px;
    stroke: url(#gradientStar);
}

.hero-text h1 {
    font-size: 48px;
    line-height: 1.2;
    margin-bottom: 20px;
    color: var(--primary-color);
}

.hero-text h1 span {
    color: var(--accent-color);
    position: relative;
}

.hero-text h1 span::after {
    content: '';
    position: absolute;
    bottom: 8px;
    left: 0;
    width: 100%;
    height: 12px;
    background: rgba(74, 134, 255, 0.2);
    z-index: -1;
}

.hero-text p {
    font-size: 20px;
    color: var(--text-light);
    margin-bottom: 30px;
    max-width: 600px;
}

.hero-image {
    flex: 1;
    position: relative;
}

.hero-img-container {
    border-radius: var(--border-radius);
    overflow: hidden;
    box-shadow: 0 20px 40px rgba(0, 0, 0, 0.1);
    position: relative;
    z-index: 1;
}

.hero-img {
    width: 100%;
    height: auto;
    display: block;
    border-radius: var(--border-radius);
}

.floating-card {
    position: absolute;
    background: white;
    border-radius: var(--border-radius);
    padding: 20px;
    box-shadow: 0 10px 30px rgba(0, 0, 0, 0.1);
    width: 280px;
    z-index: 2;
}

.floating-card-1 {
    top: 20%;
    left: -5%;
    transform: rotate(-5deg);
}

.floating-card-2 {
    bottom: 15%;
    right: -5%;
    transform: rotate(5deg);
}

.floating-card h3 {
    font-size: 18px;
    margin-bottom: 10px;
    color: var(--primary-color);
}

.floating-card p {
    font-size: 14px;
    color: var(--text-light);
}

.stats {
    display: flex;
    gap: 30px;
    margin-top: 40px;
}

.stat-item {
    background: white;
    border-radius: var(--border-radius);
    padding: 20px;
    flex: 1;
    box-shadow: 0 5px 15px rgba(0, 0, 0, 0.05);
}

.stat-number {
    font-size: 36px;
    font-weight: 700;
    color: var(--accent-color);
    margin-bottom: 5px;
}

.stat-label {
    color: var(--text-light);
    font-size: 16px;
}

/* 业务领域部分 */
.business-sectors {
    padding: 100px 0;
    background-color: white;
}

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

.section-header h2 {
    font-size: 36px;
    color: var(--primary-color);
    margin-bottom: 15px;
}

.section-header p {
    color: var(--text-light);
    max-width: 700px;
    margin: 0 auto;
    font-size: 18px;
}

.sectors-grid {
    display: flex;
    justify-content: space-between;
    gap: 30px;
}

.sector-card {
    background: white;
    border-radius: var(--border-radius);
    overflow: hidden;
    box-shadow: var(--box-shadow);
    transition: var(--transition);
    flex: 1;
    contain: layout style paint; /* 性能优化 */
}

.sector-card:hover,
.sector-card:focus-within {
    transform: translateY(-10px);
    box-shadow: 0 15px 40px rgba(0, 0, 0, 0.1);
}

.sector-img {
    height: 200px;
    overflow: hidden;
}

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

.sector-card:hover .sector-img img {
    transform: scale(1.05);
}

.sector-content {
    padding: 25px;
}

.sector-number {
    display: inline-block;
    width: 36px;
    height: 36px;
    background: linear-gradient(135deg, var(--secondary-color), var(--accent-color));
    color: white;
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    font-weight: bold;
    margin-bottom: 15px;
}

.sector-content h3 {
    font-size: 22px;
    margin-bottom: 15px;
    color: var(--primary-color);
}

.sector-content p {
    color: var(--text-light);
    margin-bottom: 20px;
}

.sector-features {
    list-style: none;
}

.sector-features li {
    position: relative;
    padding-left: 20px;
    margin-bottom: 12px;
    color: var(--text-light);
    line-height: 1.5;
}

.sector-features li::before {
    content: '';
    position: absolute;
    left: 6px;
    top: 10px;
    width: 6px;
    height: 6px;
    background: var(--accent-color);
    border-radius: 50%;
    opacity: 0.8;
}

/* 成功案例部分 */
.success-cases {
    padding: 100px 0;
    background-color: var(--light-color);
}

.case-tabs {
    display: flex;
    justify-content: center;
    gap: 10px;
    margin-bottom: 40px;
    flex-wrap: wrap;
}

.case-tab {
    padding: 12px 25px;
    background: white;
    border-radius: 50px;
    cursor: pointer;
    font-weight: 500;
    transition: var(--transition);
    box-shadow: 0 3px 10px rgba(0, 0, 0, 0.05);
    border: none;
    outline: none;
}

.case-tab.active,
.case-tab:hover,
.case-tab:focus {
    background: linear-gradient(135deg, var(--secondary-color), var(--accent-color));
    color: white;
    outline: 2px solid var(--accent-color);
    outline-offset: 2px;
}

.cases-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(350px, 1fr));
    gap: 30px;
}

.case-card {
    background: white;
    border-radius: var(--border-radius);
    overflow: hidden;
    box-shadow: var(--box-shadow);
    transition: var(--transition);
    contain: layout style paint; /* 性能优化 */
}

.case-card:hover,
.case-card:focus-within {
    transform: translateY(-5px);
    box-shadow: 0 15px 40px rgba(0, 0, 0, 0.1);
}

.case-img {
    height: 220px;
    overflow: hidden;
}

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

.case-card:hover .case-img img {
    transform: scale(1.05);
}

.case-content {
    padding: 25px;
}

.case-tag {
    display: inline-block;
    padding: 5px 15px;
    background: rgba(44, 92, 197, 0.1);
    color: var(--secondary-color);
    border-radius: 20px;
    font-size: 14px;
    margin-bottom: 15px;
}

.case-content h3 {
    font-size: 24px;
    margin-bottom: 15px;
    color: var(--primary-color);
}

.case-content p {
    color: var(--text-light);
    margin-bottom: 20px;
}

.case-details {
    display: flex;
    justify-content: space-between;
    border-top: 1px solid #eee;
    padding-top: 20px;
}

.case-detail {
    display: flex;
    align-items: center;
    gap: 8px;
}

.case-detail i {
    color: var(--accent-color);
}

/* 资质认证部分 */
.certifications {
    padding: 100px 0;
    background-color: var(--light-color);
}

.certifications-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(350px, 1fr));
    gap: 30px;
}

.cert-card {
    background: white;
    border-radius: var(--border-radius);
    overflow: hidden;
    box-shadow: var(--box-shadow);
    transition: var(--transition);
    display: flex;
    flex-direction: column;
    height: 100%;
    contain: layout style paint; /* 性能优化 */
}

.cert-card:hover,
.cert-card:focus-within {
    transform: translateY(-5px);
    box-shadow: 0 15px 40px rgba(0, 0, 0, 0.1);
}

.cert-image-container {
    position: relative;
    width: 100%;
    padding-top: 62.5%;
    overflow: hidden;
    background-color: #f8fafc;
    border-bottom: 1px solid #eee;
    cursor: pointer;
}

.cert-thumbnail {
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    object-fit: contain;
    background-color: #f8fafc;
    transition: transform 0.5s ease;
    display: block;
}

.cert-overlay {
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background: rgba(0, 0, 0, 0.5);
    display: flex;
    align-items: center;
    justify-content: center;
    opacity: 0;
    transition: opacity 0.3s ease;
    cursor: pointer;
}

.cert-card:hover .cert-overlay {
    opacity: 1;
}

.cert-overlay span {
    color: white;
    font-weight: 500;
    font-size: 16px;
    background: rgba(74, 134, 255, 0.8);
    padding: 8px 15px;
    border-radius: 30px;
    transition: var(--transition);
}

.cert-overlay span:hover {
    background: var(--accent-color);
    transform: scale(1.05);
}

.cert-info {
    padding: 20px 25px;
    flex: 1;
    display: flex;
    flex-direction: column;
    justify-content: space-between;
    text-align: center;
}

.cert-info h3 {
    font-size: 20px;
    margin-bottom: 10px;
    color: var(--primary-color);
}

.cert-number {
    color: var(--accent-color);
    font-weight: 500;
    margin-bottom: 5px;
    font-size: 16px;
}

.cert-date {
    color: var(--text-light);
    font-size: 14px;
}

/* 证书模态框 */
.cert-modal {
    display: none;
    position: fixed;
    z-index: 10000;
    padding-top: 60px;
    left: 0;
    top: 0;
    width: 100%;
    height: 100%;
    overflow: auto;
    background-color: rgba(0, 0, 0, 0.9);
}

.cert-modal-close {
    position: absolute;
    top: 15px;
    right: 35px;
    color: #f1f1f1;
    font-size: 40px;
    font-weight: bold;
    cursor: pointer;
    z-index: 10001;
}

.cert-modal-close:hover {
    color: #bbb;
    transform: scale(1.1);
}

.cert-modal-content {
    margin: auto;
    display: block;
    max-width: 90%;
    max-height: 80vh;
    object-fit: contain;
    border-radius: 8px;
    box-shadow: 0 5px 30px rgba(0, 0, 0, 0.5);
}

.cert-modal-caption {
    margin: 15px auto;
    text-align: center;
    color: #ccc;
    max-width: 800px;
    font-size: 16px;
    z-index: 10001;
}

/* 服务优势部分 */
.advantages {
    padding: 100px 0;
    background-color: white;
}

.advantages-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(350px, 1fr));
    gap: 30px;
}

.advantage-card {
    background: linear-gradient(135deg, #f8fafc 0%, white 100%);
    border-radius: var(--border-radius);
    padding: 40px 30px;
    text-align: center;
    box-shadow: var(--box-shadow);
    transition: var(--transition);
    border: 1px solid #eee;
    contain: layout style paint; /* 性能优化 */
}

.advantage-card:hover,
.advantage-card:focus-within {
    transform: translateY(-5px);
    box-shadow: 0 15px 40px rgba(0, 0, 0, 0.1);
    border-color: rgba(74, 134, 255, 0.2);
}

.advantage-icon {
    width: 80px;
    height: 80px;
    background: white;
    border: 2px solid var(--accent-color);
    color: var(--accent-color);
    border-radius: 20px;
    display: flex;
    align-items: center;
    justify-content: center;
    margin: 0 auto 25px;
}

.advantage-icon svg {
    width: 40px;
    height: 40px;
}

.advantage-card h3 {
    font-size: 24px;
    margin-bottom: 20px;
    color: var(--primary-color);
}

.advantage-card ul {
    list-style: none;
    text-align: left;
    padding-left: 10px;
}

.advantage-card li {
    position: relative;
    padding-left: 20px;
    margin-bottom: 15px;
    color: var(--text-light);
}

.advantage-card li::before {
    content: '';
    position: absolute;
    left: 6px;
    top: 10px;
    width: 6px;
    height: 6px;
    background: var(--accent-color);
    border-radius: 50%;
    opacity: 0.8;
}

/* 大事记部分 - 横向带箭头 */
.timeline-section {
    padding: 100px 0;
    background-color: white;
}

.timeline-wrapper {
    position: relative;
    max-width: 1200px;
    margin: 0 auto;
    padding: 0 60px;
}

.timeline-container {
    display: flex;
    gap: 30px;
    overflow: hidden;
    scroll-behavior: smooth;
    padding: 20px 0;
    border-radius: var(--border-radius);
}

.timeline {
    display: flex;
    gap: 30px;
    transition: transform 0.5s cubic-bezier(0.25, 0.46, 0.45, 0.94);
    flex-shrink: 0;
}

.timeline-item {
    min-width: 320px;
    max-width: 350px;
    background: white;
    border-radius: var(--border-radius);
    box-shadow: 0 10px 30px rgba(0, 0, 0, 0.08);
    transition: var(--transition);
    border: 1px solid #eee;
    flex-shrink: 0;
    contain: layout style paint; /* 性能优化 */
}

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

.timeline-year {
    font-size: 24px;
    font-weight: bold;
    color: white;
    background: var(--accent-color);
    text-align: center;
    padding: 15px;
    border-radius: var(--border-radius) var(--border-radius) 0 0;
}

.timeline-content {
    padding: 20px;
}

.timeline-content h3 {
    font-size: 18px;
    color: var(--primary-color);
    margin-bottom: 15px;
}

.timeline-content ul {
    list-style: none;
    padding-left: 10px;
}

.timeline-content li {
    position: relative;
    padding-left: 20px;
    margin-bottom: 10px;
    color: var(--text-light);
    font-size: 14px;
    line-height: 1.5;
}

.timeline-content li::before {
    content: '•';
    position: absolute;
    left: 6px;
    top: 0;
    color: var(--accent-color);
    font-weight: bold;
}

/* 左右箭头按钮 */
.timeline-arrow {
    position: absolute;
    top: 50%;
    transform: translateY(-50%);
    width: 50px;
    height: 50px;
    background: white;
    border: 2px solid var(--accent-color);
    color: var(--accent-color);
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    cursor: pointer;
    box-shadow: 0 5px 15px rgba(0, 0, 0, 0.1);
    z-index: 10;
    transition: var(--transition);
    border: none;
    outline: none;
}

.timeline-arrow:hover,
.timeline-arrow:focus {
    background: var(--accent-color);
    color: white;
    transform: translateY(-50%) scale(1.1);
    outline: 2px solid var(--accent-color);
}

.timeline-arrow.prev {
    left: 10px;
}

.timeline-arrow.next {
    right: 10px;
}

.timeline-arrow i {
    font-size: 18px;
}

/* 关于我们部分 */
.about-section {
    padding: 100px 0;
    background-color: var(--light-color);
}

.about-content {
    max-width: 800px;
    margin: 0 auto;
    text-align: center;
}

.about-text p {
    font-size: 18px;
    line-height: 1.8;
    color: var(--text-light);
    margin-bottom: 25px;
}

/* 合作伙伴栏目 - 横向滚动 */
.partners {
    padding: 100px 0;
    background-color: var(--light-color);
    overflow: hidden;
    position: relative;
}

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

.partners-header h2 {
    font-size: 36px;
    color: var(--primary-color);
    margin-bottom: 15px;
}

.partners-header p {
    color: var(--text-light);
    max-width: 700px;
    margin: 0 auto;
    font-size: 18px;
}

.partners-container {
    position: relative;
    width: 100%;
    overflow: hidden;
    padding: 20px 0;
}

.partners-track {
    display: flex;
    gap: 60px;
    animation: scroll-partners 30s linear infinite;
    width: max-content;
}

.partner-item {
    display: flex;
    flex-direction: column;
    align-items: center;
    text-align: center;
    width: 160px;
    flex-shrink: 0;
    transition: var(--transition);
    contain: layout style paint; /* 性能优化 */
}

.partner-item:hover,
.partner-item:focus-within {
    transform: translateY(-5px);
}

.partner-logo-rect {
    width: 140px;
    height: 40px;
    background: white;
    border-radius: 8px;
    box-shadow: 0 5px 15px rgba(0, 0, 0, 0.08);
    display: flex;
    align-items: center;
    justify-content: center;
    margin-bottom: 12px;
    overflow: hidden;
    transition: var(--transition);
}

.partner-logo-rect:hover {
    box-shadow: 0 8px 25px rgba(0, 0, 0, 0.12);
}

.partner-logo-rect img {
    max-width: 90%;
    max-height: 70%;
    object-fit: contain;
    transition: transform 0.3s ease;
}

.partner-item:hover .partner-logo-rect img {
    transform: scale(1.05);
}

.partner-name {
    font-size: 16px;
    color: var(--text-color);
    font-weight: 500;
}

.partner-name:hover {
    color: var(--accent-color);
}

@keyframes scroll-partners {
    0% {
        transform: translateX(0);
    }
    100% {
        transform: translateX(calc(-160px * 10 - 60px * 9));
    }
}

/* 页脚 */
footer {
    background: var(--background-dark);
    color: white;
    padding: 70px 0 0;
}

.footer-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(250px, 1fr));
    gap: 40px;
    margin-bottom: 50px;
}

.footer-column h3 {
    font-size: 20px;
    margin-bottom: 25px;
    position: relative;
    padding-bottom: 10px;
}

.footer-column h3::after {
    content: '';
    position: absolute;
    bottom: 0;
    left: 0;
    width: 40px;
    height: 2px;
    background: var(--accent-color);
}

.footer-about p {
    color: #a0aec0;
    margin-bottom: 25px;
    line-height: 1.7;
}

.footer-social {
    display: flex;
    gap: 15px;
}

.social-icon {
    width: 40px;
    height: 40px;
    border-radius: 50%;
    background: rgba(255, 255, 255, 0.1);
    display: flex;
    align-items: center;
    justify-content: center;
    color: white;
    transition: var(--transition);
}

.social-icon:hover,
.social-icon:focus {
    background: var(--accent-color);
    transform: translateY(-3px);
    outline: 2px solid var(--accent-color);
}

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

.footer-links li {
    margin-bottom: 12px;
}

.footer-links a {
    color: #a0aec0;
    text-decoration: none;
    transition: var(--transition);
    display: flex;
    align-items: center;
    gap: 8px;
}

.footer-links a:hover,
.footer-links a:focus {
    color: white;
    transform: translateX(5px);
}

.footer-contact li {
    display: flex;
    align-items: flex-start;
    gap: 15px;
    margin-bottom: 20px;
    color: #a0aec0;
}

.footer-contact i {
    margin-top: 5px;
}

/* 邮箱样式 */
.footer-email {
    display: flex;
    align-items: center;
    gap: 15px;
    margin-top: 20px;
    color: #a0aec0;
}

.footer-email i {
    margin-top: 5px;
}

.footer-email a {
    color: #a0aec0;
    text-decoration: none;
    transition: color 0.3s ease;
}

.footer-email a:hover,
.footer-email a:focus {
    color: white;
}

.footer-bottom {
    border-top: 1px solid rgba(255, 255, 255, 0.1);
    padding: 25px 0;
    text-align: center;
    color: #a0aec0;
}

.footer-bottom a {
    color: var(--accent-color);
    text-decoration: none;
}

/* 响应式设计 */
@media (max-width: 992px) {
    .hero-content {
        flex-direction: column;
    }

    .hero-text h1 {
        font-size: 36px;
    }

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

    .sectors-grid {
        flex-direction: column;
    }
}

@media (max-width: 768px) {
    .nav-links {
        display: none;
    }

    .hero-text h1 {
        font-size: 30px;
    }

    .hero-text p {
        font-size: 16px;
    }

    .section-header h2 {
        font-size: 28px;
    }

    .stats {
        flex-direction: column;
        gap: 15px;
    }

    .certifications-grid,
    .advantages-grid,
    .timeline-section,
    .partners,
    .about-section {
        padding: 80px 0;
    }

    .certifications-grid,
    .advantages-grid {
        grid-template-columns: 1fr;
    }

    .cert-image-container {
        padding-top: 70%;
    }

    .partners-track {
        gap: 40px;
    }

    .partner-item {
        width: 140px;
    }

    .partner-logo-rect {
        width: 120px;
        height: 36px;
    }

    .partner-logo-rect img {
        max-height: 65%;
    }
    
    .language-btn {
        padding: 6px 12px;
        font-size: 13px;
    }
    
    /* 移动端触摸优化 */
    .nav-links a, .case-tab, .language-btn {
        min-height: 44px;
        min-width: 44px;
        display: flex;
        align-items: center;
        justify-content: center;
    }
    
    /* 安全区域支持 */
    .container {
        padding-left: max(20px, env(safe-area-inset-left));
        padding-right: max(20px, env(safe-area-inset-right));
    }
}

@media (max-width: 480px) {
    .partner-item {
        width: 120px;
    }

    .partner-logo-rect {
        width: 100px;
        height: 30px;
    }

    .partner-logo-rect img {
        max-height: 60%;
    }

    .partners-header h2 {
        font-size: 32px;
    }
}

/* 渐进增强动画 */
@supports (animation-timeline: view()) {
    .sector-card, .case-card, .advantage-card {
        animation: fadeInUp linear;
        animation-timeline: view();
        animation-range: entry 0% cover 40%;
    }
    
    @keyframes fadeInUp {
        from {
            opacity: 0;
            transform: translateY(30px);
        }
        to {
            opacity: 1;
            transform: translateY(0);
        }
    }
}

/* 供应商前缀支持 */
.sector-card, .case-card, .cert-card, .advantage-card, .timeline-item, .partner-item {
    -webkit-transform: translateY(0);
    -moz-transform: translateY(0);
    -ms-transform: translateY(0);
    transform: translateY(0);
}