/* ==========================================================================
   基础样式
   ========================================================================== */
:root {
    --primary-color: #2196F3;
    --secondary-color: #1976D2;
    --dark-color: #0D47A1;
    --light-color: #E3F2FD;
    --gray-color: #607D8B;
    --white-color: #FFFFFF;
    --black-color: #212121;
    --success-color: #4CAF50;
    --warning-color: #FFC107;
    --danger-color: #F44336;
}

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

body {
    font-family: 'Noto Sans SC', sans-serif;
    line-height: 1.6;
    color: var(--black-color);
    background-color: var(--white-color);
    overflow-x: hidden;
}

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

/* ==========================================================================
   通用动画
   ========================================================================== */
@keyframes fadeIn {
    from { opacity: 0; }
    to { opacity: 1; }
}

@keyframes fadeInUp {
    from {
        opacity: 0;
        transform: translateY(20px);
    }
    to {
        opacity: 1;
        transform: translateY(0);
    }
}

@keyframes bgPulse {
    0%, 100% { opacity: 0.5; }
    50% { opacity: 1; }
}

@keyframes lineGrow {
    from { transform: scaleX(0); }
    to { transform: scaleX(1); }
}

@keyframes progress {
    from { width: 0; }
    to { width: 100%; }
}

/* ==========================================================================
   导航栏模块
   ========================================================================== */
.navbar {
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    background: rgba(255, 255, 255, 0.95);
    backdrop-filter: blur(10px);
    box-shadow: 0 2px 10px rgba(0, 0, 0, 0.1);
    z-index: 1000;
    transition: all 0.3s ease;
}

.navbar.scrolled {
    background: rgba(255, 255, 255, 0.98);
    box-shadow: 0 2px 20px rgba(0, 0, 0, 0.1);
}

.navbar .container {
    display: flex;
    justify-content: space-between;
    align-items: center;
    height: 80px;
}

.logo img {
    height: 40px;
    transition: transform 0.3s ease;
}

.logo img:hover {
    transform: scale(1.05);
}

.nav-links {
    display: flex;
    list-style: none;
    gap: 30px;
}

.nav-links a {
    color: var(--black-color);
    text-decoration: none;
    font-weight: 500;
    position: relative;
    padding: 5px 0;
    transition: color 0.3s ease;
}

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

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

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

.menu-toggle {
    display: none;
    background: none;
    border: none;
    cursor: pointer;
    padding: 10px;
    z-index: 1000;
    position: relative;
}

.menu-toggle span {
    display: block;
    width: 25px;
    height: 2px;
    background-color: var(--dark-color);
    margin: 5px 0;
    transition: all 0.3s ease;
}

@media (max-width: 768px) {
    .nav-links {
        position: fixed;
        top: 0;
        right: -100%;
        width: 80%;
        height: 100vh;
        background: rgba(255, 255, 255, 0.95);
        backdrop-filter: blur(10px);
        padding: 80px 40px;
        flex-direction: column;
        gap: 20px;
        transition: right 0.3s ease;
        z-index: 999;
        box-shadow: -5px 0 15px rgba(0, 0, 0, 0.1);
    }

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

    .menu-toggle {
        display: block;
    }

    .menu-toggle.active span:nth-child(1) {
        transform: rotate(45deg) translate(5px, 5px);
    }

    .menu-toggle.active span:nth-child(2) {
        opacity: 0;
    }

    .menu-toggle.active span:nth-child(3) {
        transform: rotate(-45deg) translate(7px, -7px);
    }

    .menu-open {
        overflow: hidden;
    }
}

@media (max-width: 576px) {
    .nav-links {
        width: 100%;
        padding: 60px 20px;
    }
}

/* ==========================================================================
   首页横幅模块
   ========================================================================== */
.hero {
    padding-top: 120px;
    min-height: 100vh;
    background: linear-gradient(135deg, var(--light-color) 0%, var(--white-color) 100%);
    position: relative;
    overflow: hidden;
}

.hero::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background: url('path/to/pattern.png');
    opacity: 0.1;
    animation: backgroundMove 20s linear infinite;
}

@keyframes backgroundMove {
    from { transform: translateX(0) translateY(0); }
    to { transform: translateX(-100px) translateY(-100px); }
}

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

.hero-text {
    animation: fadeInUp 1s ease;
}

.hero-text h1 {
    font-size: 3.5rem;
    font-weight: 700;
    line-height: 1.2;
    margin-bottom: 20px;
    color: var(--dark-color);
    background: linear-gradient(45deg, var(--primary-color), var(--dark-color));
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
}

.hero-text p {
    font-size: 1.2rem;
    color: var(--gray-color);
    margin-bottom: 30px;
    animation: fadeIn 1s ease 0.3s both;
}

.hero-stats {
    display: flex;
    gap: 30px;
    margin-bottom: 30px;
    animation: fadeIn 1s ease 0.6s both;
}

.stat-item {
    text-align: center;
    padding: 20px;
    background: rgba(255, 255, 255, 0.9);
    border-radius: 15px;
    box-shadow: 0 5px 20px rgba(0, 0, 0, 0.05);
    transition: transform 0.3s ease;
}

.stat-item:hover {
    transform: translateY(-5px);
}

.stat-number {
    display: block;
    font-size: 2.5rem;
    font-weight: 700;
    color: var(--primary-color);
    margin-bottom: 5px;
}

.stat-label {
    font-size: 1rem;
    color: var(--gray-color);
}

/* 轮播图样式 */
.hero-slider {
    position: relative;
    height: 500px;
    border-radius: 20px;
    overflow: hidden;
    box-shadow: 0 10px 30px rgba(0, 0, 0, 0.1);
}

.slide {
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    opacity: 0;
    transform: scale(1.1);
    transition: all 0.5s ease;
}

.slide.active {
    opacity: 1;
    transform: scale(1);
}

.slide-image {
    width: 100%;
    height: 100%;
    position: relative;
}

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

.slide:hover .slide-image img {
    transform: scale(1.1);
}

.image-overlay {
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background: linear-gradient(to bottom, rgba(0,0,0,0.2), rgba(0,0,0,0.6));
}

.slide-content {
    position: absolute;
    bottom: 40px;
    left: 40px;
    color: var(--white-color);
    max-width: 500px;
    opacity: 0;
    transform: translateY(20px);
    transition: all 0.5s ease 0.3s;
}

.slide.active .slide-content {
    opacity: 1;
    transform: translateY(0);
}

.slide-tag {
    display: inline-block;
    padding: 5px 15px;
    background: var(--primary-color);
    border-radius: 20px;
    font-size: 0.9rem;
    margin-bottom: 15px;
}

.slide-content h2 {
    font-size: 2rem;
    margin-bottom: 10px;
}

.slide-content p {
    font-size: 1.1rem;
    opacity: 0.9;
}

.slider-controls {
    position: absolute;
    bottom: 20px;
    right: 40px;
    display: flex;
    align-items: center;
    gap: 20px;
    z-index: 10;
}

.prev-slide,
.next-slide {
    background: rgba(255, 255, 255, 0.2);
    border: none;
    width: 40px;
    height: 40px;
    border-radius: 50%;
    color: var(--white-color);
    cursor: pointer;
    transition: all 0.3s ease;
}

.prev-slide:hover,
.next-slide:hover {
    background: var(--primary-color);
}

.slider-progress {
    width: 100px;
    height: 4px;
    background: rgba(255, 255, 255, 0.2);
    border-radius: 2px;
    overflow: hidden;
}

.slider-progress::after {
    content: '';
    display: block;
    width: 0;
    height: 100%;
    background: var(--primary-color);
    animation: progress 5s linear infinite;
}

/* 核心优势样式 */
.features {
    padding: 100px 0;
    background: var(--white-color);
}

.section-header {
    text-align: center;
    margin-bottom: 60px;
    animation: fadeIn 1s ease;
}

.section-header h2 {
    font-size: 2.5rem;
    color: var(--dark-color);
    margin-bottom: 20px;
}

.section-header p {
    font-size: 1.2rem;
    color: var(--gray-color);
    max-width: 600px;
    margin: 0 auto;
}

.features-grid {
    display: grid;
    grid-template-columns: repeat(4, 1fr);
    gap: 30px;
}

.feature-card {
    background: var(--white-color);
    padding: 40px 30px;
    border-radius: 15px;
    box-shadow: 0 5px 20px rgba(0, 0, 0, 0.05);
    transition: all 0.3s ease;
    animation: fadeInUp 1s ease;
}

.feature-card:hover {
    transform: translateY(-10px);
    box-shadow: 0 15px 30px rgba(0, 0, 0, 0.1);
}

.feature-icon {
    width: 60px;
    height: 60px;
    background: var(--light-color);
    border-radius: 15px;
    display: flex;
    align-items: center;
    justify-content: center;
    margin-bottom: 20px;
    color: var(--primary-color);
    font-size: 24px;
    transition: all 0.3s ease;
}

.feature-card:hover .feature-icon {
    background: var(--primary-color);
    color: var(--white-color);
    transform: rotateY(180deg);
}

.feature-card h3 {
    font-size: 1.5rem;
    margin-bottom: 15px;
    color: var(--dark-color);
}

.feature-card p {
    color: var(--gray-color);
    margin-bottom: 20px;
}

.feature-card ul {
    list-style: none;
}

.feature-card ul li {
    margin-bottom: 10px;
    padding-left: 25px;
    position: relative;
}

.feature-card ul li::before {
    content: '✓';
    position: absolute;
    left: 0;
    color: var(--primary-color);
}

/* 响应式设计 */
@media (max-width: 992px) {
    .hero-content {
        grid-template-columns: 1fr;
    }

    .features-grid {
        grid-template-columns: repeat(2, 1fr);
    }
}

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

    .menu-toggle {
        display: block;
    }

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

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

@media (max-width: 576px) {
    .hero-stats {
        flex-direction: column;
    }
}

/* ==========================================================================
   产品展示模块
   ========================================================================== */
.product-section {
    padding: 100px 0;
    background: linear-gradient(135deg, var(--light-color) 0%, var(--white-color) 100%);
    position: relative;
    overflow: hidden;
}

.product-section::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background: url('path/to/pattern.png');
    opacity: 0.05;
    pointer-events: none;
}

.product-container {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(350px, 1fr));
    gap: 40px;
    padding: 20px;
    max-width: 1400px;
    margin: 0 auto;
}

.product-card {
    position: relative;
    background: rgba(255, 255, 255, 0.95);
    border-radius: 24px;
    padding: 0;
    transition: all 0.5s cubic-bezier(0.4, 0, 0.2, 1);
    overflow: hidden;
    transform-style: preserve-3d;
    box-shadow: 0 15px 35px rgba(0, 0, 0, 0.1);
}

.product-image-wrapper {
    position: relative;
    width: 100%;
    height: 300px;
    overflow: hidden;
    border-radius: 24px 24px 0 0;
}

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

.product-card:hover .product-image {
    transform: scale(1.05);
}

.product-badge {
    position: absolute;
    top: 20px;
    right: 20px;
    background: var(--primary-color);
    color: white;
    padding: 8px 16px;
    border-radius: 20px;
    font-size: 0.9rem;
    font-weight: 500;
    box-shadow: 0 4px 12px rgba(0, 0, 0, 0.1);
    z-index: 1;
}

.product-detail {
    padding: 30px;
    background: white;
    position: relative;
}

.product-tags {
    display: flex;
    gap: 10px;
    margin-bottom: 15px;
    flex-wrap: wrap;
}

.product-tags span {
    background: var(--light-color);
    color: var(--primary-color);
    padding: 5px 12px;
    border-radius: 15px;
    font-size: 0.85rem;
    font-weight: 500;
    transition: all 0.3s ease;
}

.product-card:hover .product-tags span {
    background: var(--primary-color);
    color: white;
}

.product-card h3 {
    font-size: 1.8rem;
    margin-bottom: 15px;
    color: var(--dark-color);
    font-weight: 700;
}

.product-card p {
    color: var(--gray-color);
    line-height: 1.6;
    margin-bottom: 25px;
    font-size: 1.1rem;
}

.specs {
    display: grid;
    grid-template-columns: repeat(2, 1fr);
    gap: 15px;
    margin-bottom: 25px;
}

.spec-item {
    background: var(--light-color);
    padding: 15px;
    border-radius: 16px;
    text-align: center;
    transition: all 0.3s ease;
}

.product-card:hover .spec-item {
    transform: translateY(-5px);
}

.spec-item span {
    display: block;
    font-size: 0.9rem;
    color: var(--gray-color);
    margin-bottom: 5px;
}

.spec-item strong {
    display: block;
    font-size: 1.2rem;
    color: var(--primary-color);
    font-weight: 600;
}

.product-features {
    border-top: 1px solid rgba(0, 0, 0, 0.1);
    padding-top: 20px;
}

.product-features ul {
    list-style: none;
    display: grid;
    grid-template-columns: repeat(2, 1fr);
    gap: 15px;
}

.product-features li {
    position: relative;
    padding-left: 25px;
    color: var(--gray-color);
    font-size: 1rem;
}

.product-features li::before {
    content: '✓';
    position: absolute;
    left: 0;
    color: var(--primary-color);
    font-weight: bold;
}

/* 动画效果 */
.product-card {
    opacity: 0;
    transform: translateY(30px);
    animation: fadeInUp 0.8s ease forwards;
}

.product-card:nth-child(2) {
    animation-delay: 0.2s;
}

.product-card:nth-child(3) {
    animation-delay: 0.4s;
}

@keyframes fadeInUp {
    from {
        opacity: 0;
        transform: translateY(30px);
    }
    to {
        opacity: 1;
        transform: translateY(0);
    }
}

/* 响应式调整 */
@media (max-width: 992px) {
    .product-container {
        grid-template-columns: repeat(2, 1fr);
    }
}

@media (max-width: 768px) {
    .product-container {
        grid-template-columns: 1fr;
    }
    
    .product-features ul {
        grid-template-columns: 1fr;
    }
}

/* ==========================================================================
   行业解决方案模块
   ========================================================================== */
.solutions-section {
    padding: 100px 0;
    background: linear-gradient(135deg, var(--white-color) 0%, var(--light-color) 100%);
    position: relative;
    overflow: hidden;
}

.solutions-container {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(380px, 1fr));
    gap: 40px;
    padding: 20px;
}

.solution-card {
    background: var(--white-color);
    border-radius: 24px;
    overflow: hidden;
    box-shadow: 0 15px 35px rgba(0, 0, 0, 0.1);
    transition: all 0.5s cubic-bezier(0.4, 0, 0.2, 1);
    position: relative;
}

.solution-card:hover {
    transform: translateY(-10px);
    box-shadow: 0 25px 45px rgba(0, 0, 0, 0.15);
}

.solution-image {
    position: relative;
    width: 100%;
    height: 250px;
    overflow: hidden;
}

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

.solution-card:hover .solution-image img {
    transform: scale(1.1);
}

.solution-overlay {
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background: linear-gradient(to bottom, rgba(0,0,0,0.2), rgba(0,0,0,0.6));
    display: flex;
    align-items: flex-start;
    padding: 20px;
}

.solution-tag {
    background: var(--primary-color);
    color: var(--white-color);
    padding: 8px 16px;
    border-radius: 20px;
    font-size: 0.9rem;
    font-weight: 500;
    box-shadow: 0 4px 12px rgba(0, 0, 0, 0.1);
}

.solution-content {
    padding: 30px;
    position: relative;
}

.solution-icon {
    width: 60px;
    height: 60px;
    background: var(--light-color);
    border-radius: 20px;
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 24px;
    color: var(--primary-color);
    margin-bottom: 20px;
    transition: all 0.3s ease;
}

.solution-card:hover .solution-icon {
    background: var(--primary-color);
    color: var(--white-color);
    transform: rotateY(180deg);
}

.solution-content h3 {
    font-size: 1.8rem;
    color: var(--dark-color);
    margin-bottom: 15px;
    font-weight: 700;
}

.solution-content p {
    color: var(--gray-color);
    line-height: 1.6;
    margin-bottom: 25px;
    font-size: 1.1rem;
}

.solution-features {
    display: grid;
    grid-template-columns: repeat(2, 1fr);
    gap: 15px;
    margin-bottom: 25px;
}

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

.feature-item i {
    color: var(--primary-color);
    font-size: 1.1rem;
}

.feature-item span {
    color: var(--gray-color);
    font-size: 1rem;
}

.solution-data {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: 15px;
    padding-top: 25px;
    border-top: 1px solid rgba(0, 0, 0, 0.1);
}

.data-item {
    text-align: center;
}

.data-item strong {
    display: block;
    font-size: 1.5rem;
    color: var(--primary-color);
    font-weight: 700;
    margin-bottom: 5px;
}

.data-item span {
    font-size: 0.9rem;
    color: var(--gray-color);
}

/* 动画效果 */
.solution-card {
    opacity: 0;
    transform: translateY(30px);
    animation: fadeInUp 0.8s ease forwards;
}

.solution-card:nth-child(2) {
    animation-delay: 0.2s;
}

.solution-card:nth-child(3) {
    animation-delay: 0.4s;
}

/* 响应式调整 */
@media (max-width: 992px) {
    .solutions-container {
        grid-template-columns: repeat(2, 1fr);
    }
}

@media (max-width: 768px) {
    .solutions-container {
        grid-template-columns: 1fr;
    }
    
    .solution-features {
        grid-template-columns: 1fr;
    }
    
    .solution-data {
        grid-template-columns: repeat(2, 1fr);
        gap: 20px;
    }
}

@media (max-width: 576px) {
    .solution-data {
        grid-template-columns: 1fr;
    }
}

/* ==========================================================================
   成功案例模块
   ========================================================================== */
.cases-section {
    padding: 100px 0;
    background: linear-gradient(135deg, var(--white-color) 0%, var(--light-color) 100%);
    position: relative;
    overflow: hidden;
}

.cases-container {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: 30px;
    max-width: 1200px;
    margin: 0 auto;
    padding: 0 20px;
}

.case-card {
    background: var(--white-color);
    border-radius: 20px;
    overflow: hidden;
    box-shadow: 0 15px 35px rgba(0, 0, 0, 0.1);
    transition: all 0.3s ease;
    height: 100%;
    display: flex;
    flex-direction: column;
}

.case-card:hover {
    transform: translateY(-10px);
    box-shadow: 0 25px 45px rgba(0, 0, 0, 0.15);
}

.case-image {
    position: relative;
    width: 100%;
    height: 240px;
    overflow: hidden;
}

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

.case-card:hover .case-image img {
    transform: scale(1.1);
}

.case-content {
    padding: 30px;
    flex: 1;
    display: flex;
    flex-direction: column;
}

.case-header {
    margin-bottom: 20px;
}

.case-tag {
    display: inline-block;
    padding: 6px 15px;
    background: var(--light-color);
    color: var(--primary-color);
    border-radius: 15px;
    font-size: 0.9rem;
    font-weight: 500;
    margin-bottom: 15px;
}

.case-title {
    font-size: 1.5rem;
    color: var(--dark-color);
    margin-bottom: 10px;
    font-weight: 600;
    line-height: 1.4;
}

.case-date {
    color: var(--gray-color);
    font-size: 0.9rem;
    display: flex;
    align-items: center;
    gap: 5px;
}

.case-date i {
    font-size: 0.8rem;
}

.case-description {
    color: var(--gray-color);
    font-size: 1rem;
    line-height: 1.6;
    margin-bottom: 25px;
    flex-grow: 1;
}

.case-highlights {
    display: grid;
    grid-template-columns: repeat(2, 1fr);
    gap: 20px;
    margin-bottom: 25px;
    padding: 25px;
    background: linear-gradient(135deg, rgba(255, 255, 255, 0.9), rgba(255, 255, 255, 0.7));
    backdrop-filter: blur(10px);
    border-radius: 20px;
    box-shadow: 0 10px 30px rgba(0, 0, 0, 0.05);
    border: 1px solid rgba(255, 255, 255, 0.2);
    transition: all 0.3s ease;
}

.case-card:hover .case-highlights {
    transform: translateY(-5px);
    box-shadow: 0 15px 35px rgba(0, 0, 0, 0.1);
}

.highlight-item {
    text-align: center;
    padding: 20px;
    background: rgba(255, 255, 255, 0.9);
    border-radius: 15px;
    transition: all 0.3s ease;
    border: 1px solid rgba(33, 150, 243, 0.1);
}

.highlight-item:hover {
    background: var(--white-color);
    transform: translateY(-3px);
    box-shadow: 0 8px 20px rgba(0, 0, 0, 0.08);
}

.highlight-item strong {
    display: block;
    font-size: 2rem;
    color: var(--primary-color);
    font-weight: 700;
    margin-bottom: 8px;
    line-height: 1.2;
    background: linear-gradient(45deg, var(--primary-color), var(--secondary-color));
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    position: relative;
}

.highlight-item strong::after {
    content: '';
    position: absolute;
    bottom: -5px;
    left: 50%;
    transform: translateX(-50%);
    width: 40px;
    height: 2px;
    background: linear-gradient(45deg, var(--primary-color), var(--secondary-color));
    opacity: 0;
    transition: all 0.3s ease;
}

.highlight-item:hover strong::after {
    opacity: 1;
    width: 60px;
}

.highlight-item span {
    font-size: 0.95rem;
    color: var(--gray-color);
    display: block;
    margin-top: 5px;
    font-weight: 500;
}

.case-results {
    border-top: 1px solid rgba(0, 0, 0, 0.1);
    padding-top: 20px;
    margin-top: auto;
}

.case-results h4 {
    font-size: 1.1rem;
    color: var(--dark-color);
    margin-bottom: 15px;
    font-weight: 600;
}

.case-results ul {
    list-style: none;
    margin: 0;
    padding: 0;
}

.case-results li {
    position: relative;
    padding-left: 25px;
    margin-bottom: 10px;
    color: var(--gray-color);
    font-size: 0.95rem;
    line-height: 1.5;
}

.case-results li:last-child {
    margin-bottom: 0;
}

.case-results li::before {
    content: '✓';
    position: absolute;
    left: 0;
    color: var(--primary-color);
    font-weight: bold;
}

@media (max-width: 1200px) {
    .cases-container {
        grid-template-columns: repeat(2, 1fr);
        gap: 25px;
    }
}

@media (max-width: 768px) {
    .cases-container {
        grid-template-columns: 1fr;
        gap: 30px;
    }
    
    .case-image {
        height: 200px;
    }
    
    .case-content {
        padding: 25px;
    }
    
    .case-title {
        font-size: 1.3rem;
    }
    
    .case-highlights {
        grid-template-columns: 1fr;
        padding: 20px;
    }
    
    .highlight-item {
        padding: 15px;
    }
    
    .highlight-item strong {
        font-size: 1.8rem;
    }
}

@media (max-width: 576px) {
    .case-highlights {
        padding: 15px;
    }
    
    .highlight-item strong {
        font-size: 1.6rem;
    }
}

/* ==========================================================================
   联系我们模块
   ========================================================================== */
.contact-section {
    padding: 100px 0;
    background: linear-gradient(135deg, var(--white-color) 0%, var(--light-color) 100%);
    position: relative;
    overflow: hidden;
}

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

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

.contact-header h2 {
    font-size: 2.5rem;
    color: var(--dark-color);
    margin-bottom: 20px;
    font-weight: 600;
    position: relative;
    display: inline-block;
}

.contact-header h2::after {
    content: '';
    position: absolute;
    bottom: -10px;
    left: 50%;
    transform: translateX(-50%);
    width: 60px;
    height: 3px;
    background: var(--primary-color);
}

.contact-header p {
    font-size: 1.2rem;
    color: var(--gray-color);
    max-width: 600px;
    margin: 0 auto;
}

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

.contact-info {
    display: grid;
    grid-template-columns: repeat(2, 1fr);
    gap: 30px;
}

.contact-card {
    background: var(--white-color);
    border-radius: 20px;
    box-shadow: 0 15px 35px rgba(0, 0, 0, 0.1);
    overflow: hidden;
    transition: all 0.3s ease;
}

.contact-card:hover {
    transform: translateY(-10px);
    box-shadow: 0 20px 40px rgba(0, 0, 0, 0.15);
}

.company-card .card-header {
    background: linear-gradient(135deg, var(--primary-color), var(--secondary-color));
    padding: 30px;
    text-align: center;
    color: var(--white-color);
}

.company-logo {
    height: 50px;
    margin-bottom: 15px;
}

.card-header h3 {
    font-size: 1.5rem;
    font-weight: 600;
}

.card-body {
    padding: 30px;
}

.info-item {
    display: flex;
    align-items: flex-start;
    gap: 20px;
    padding: 20px;
    border-bottom: 1px solid rgba(0, 0, 0, 0.1);
}

.info-item:last-child {
    border-bottom: none;
}

.info-item i {
    width: 40px;
    height: 40px;
    background: var(--light-color);
    border-radius: 10px;
    display: flex;
    align-items: center;
    justify-content: center;
    color: var(--primary-color);
    font-size: 1.2rem;
    transition: all 0.3s ease;
}

.contact-card:hover .info-item i {
    background: var(--primary-color);
    color: var(--white-color);
    transform: rotateY(180deg);
}

.info-content h4 {
    font-size: 1.1rem;
    color: var(--dark-color);
    margin-bottom: 5px;
}

.info-content p {
    color: var(--gray-color);
    font-size: 1rem;
    margin-bottom: 5px;
}

.info-content span {
    color: var(--gray-color);
    font-size: 0.9rem;
    opacity: 0.8;
}

.social-card .card-header {
    background: var(--white-color);
    padding: 20px 30px;
    border-bottom: 1px solid rgba(0, 0, 0, 0.1);
}

.social-card .card-header h3 {
    color: var(--dark-color);
}

.social-qr {
    display: grid;
    grid-template-columns: repeat(2, 1fr);
    gap: 20px;
    margin-bottom: 30px;
}

.qr-item {
    text-align: center;
}

.qr-code {
    width: 120px;
    height: 120px;
    border-radius: 10px;
    margin-bottom: 10px;
    box-shadow: 0 5px 15px rgba(0, 0, 0, 0.1);
}

.qr-item p {
    color: var(--gray-color);
    font-size: 0.9rem;
}

.social-links {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: 15px;
}

.social-link {
    display: flex;
    align-items: center;
    gap: 10px;
    padding: 12px;
    border-radius: 10px;
    color: var(--white-color);
    text-decoration: none;
    font-size: 0.9rem;
    transition: all 0.3s ease;
}

.social-link.weixin {
    background: #07C160;
}

.social-link.weibo {
    background: #E6162D;
}

.social-link.douyin {
    background: #000000;
}

.social-link:hover {
    transform: translateY(-3px);
    box-shadow: 0 5px 15px rgba(0, 0, 0, 0.2);
}

.contact-branches {
    background: var(--white-color);
    border-radius: 20px;
    padding: 40px;
    box-shadow: 0 15px 35px rgba(0, 0, 0, 0.1);
}

.branch-header {
    text-align: center;
    margin-bottom: 40px;
}

.branch-header h3 {
    font-size: 1.8rem;
    color: var(--dark-color);
    margin-bottom: 10px;
}

.branch-header p {
    color: var(--gray-color);
    font-size: 1.1rem;
}

.branch-grid {
    display: grid;
    grid-template-columns: repeat(4, 1fr);
    gap: 30px;
}

.branch-item {
    text-align: center;
    padding: 30px 20px;
    background: var(--light-color);
    border-radius: 15px;
    transition: all 0.3s ease;
}

.branch-item:hover {
    transform: translateY(-5px);
    box-shadow: 0 10px 25px rgba(0, 0, 0, 0.1);
    background: var(--white-color);
}

.branch-item h4 {
    font-size: 1.2rem;
    color: var(--dark-color);
    margin-bottom: 15px;
    position: relative;
    display: inline-block;
}

.branch-item h4::after {
    content: '';
    position: absolute;
    bottom: -5px;
    left: 0;
    width: 0;
    height: 2px;
    background: var(--primary-color);
    transition: width 0.3s ease;
}

.branch-item:hover h4::after {
    width: 100%;
}

.branch-item p {
    color: var(--gray-color);
    font-size: 1rem;
    margin-bottom: 10px;
}

.branch-item span {
    color: var(--primary-color);
    font-size: 0.9rem;
    font-weight: 500;
}

@media (max-width: 1200px) {
    .branch-grid {
        grid-template-columns: repeat(2, 1fr);
    }
}

@media (max-width: 992px) {
    .contact-info {
        grid-template-columns: 1fr;
    }
}

@media (max-width: 768px) {
    .contact-header h2 {
        font-size: 2rem;
    }
    
    .branch-grid {
        grid-template-columns: 1fr;
    }
    
    .social-qr {
        grid-template-columns: 1fr;
    }
}

@media (max-width: 576px) {
    .contact-section {
        padding: 60px 0;
    }
    
    .social-links {
        grid-template-columns: 1fr;
    }
    
    .info-item {
        flex-direction: column;
        align-items: center;
        text-align: center;
    }
}

/* ==========================================================================
   响应式布局
   ========================================================================== */
/* 大屏幕设备 (992px 及以上) */
@media (min-width: 992px) {
    /* 大屏幕样式 */
}

/* 中等屏幕设备 (768px 至 991px) */
@media (max-width: 991px) {
    /* 中等屏幕样式 */
}

/* 小屏幕设备 (576px 至 767px) */
@media (max-width: 767px) {
    /* 小屏幕样式 */
}

/* 超小屏幕设备 (575px 及以下) */
@media (max-width: 575px) {
    /* 超小屏幕样式 */
}

/* ==========================================================================
   页脚模块
   ========================================================================== */
.footer {
    background: linear-gradient(135deg, var(--dark-color) 0%, var(--black-color) 100%);
    color: var(--white-color);
    padding: 100px 0 40px;
    position: relative;
    overflow: hidden;
}

.footer-bg-pattern {
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background-image: 
        radial-gradient(circle at 10% 20%, rgba(255, 255, 255, 0.03) 0%, transparent 20%),
        radial-gradient(circle at 90% 80%, rgba(255, 255, 255, 0.03) 0%, transparent 20%);
    opacity: 0.6;
    pointer-events: none;
}

.footer-wave {
    position: absolute;
    top: -3px;
    left: 0;
    width: 100%;
    height: 60px;
    background: url('data:image/svg+xml,<svg xmlns="http://www.w3.org/2000/svg" viewBox="0 0 1440 120"><path fill="%23ffffff" d="M0,64L80,69.3C160,75,320,85,480,80C640,75,800,53,960,48C1120,43,1280,53,1360,58.7L1440,64L1440,0L1360,0C1280,0,1120,0,960,0C800,0,640,0,480,0C320,0,160,0,80,0L0,0Z"></path></svg>') repeat-x;
    transform: rotate(180deg);
}

.footer-container {
    position: relative;
    z-index: 1;
    max-width: 1400px;
    margin: 0 auto;
    padding: 0 20px;
}

.footer-content {
    display: grid;
    grid-template-columns: 2fr 1fr 1fr 1fr;
    gap: 60px;
    margin-bottom: 80px;
}

.footer-company {
    opacity: 0;
    transform: translateY(30px);
    animation: fadeInUp 0.8s ease forwards;
}

.footer-logo {
    margin-bottom: 25px;
}

.footer-logo img {
    height: 40px;
    transition: transform 0.3s ease;
}

.footer-logo:hover img {
    transform: scale(1.05);
}

.footer-company p {
    color: rgba(255, 255, 255, 0.8);
    font-size: 1.1rem;
    line-height: 1.8;
    margin-bottom: 30px;
}

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

.footer-social-link {
    width: 40px;
    height: 40px;
    background: rgba(255, 255, 255, 0.1);
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    color: var(--white-color);
    font-size: 1.2rem;
    transition: all 0.3s ease;
}

.footer-social-link:hover {
    background: var(--primary-color);
    transform: translateY(-5px);
}

.footer-links {
    opacity: 0;
    transform: translateY(30px);
}

.footer-links:nth-child(2) { animation: fadeInUp 0.8s ease 0.2s forwards; }
.footer-links:nth-child(3) { animation: fadeInUp 0.8s ease 0.4s forwards; }
.footer-links:nth-child(4) { animation: fadeInUp 0.8s ease 0.6s forwards; }

.footer-links h3 {
    color: var(--white-color);
    font-size: 1.5rem;
    margin-bottom: 25px;
    position: relative;
    padding-bottom: 15px;
}

.footer-links h3::after {
    content: '';
    position: absolute;
    bottom: 0;
    left: 0;
    width: 40px;
    height: 3px;
    background: var(--primary-color);
    transition: width 0.3s ease;
}

.footer-links:hover h3::after {
    width: 60px;
}

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

.footer-links li {
    margin-bottom: 15px;
}

.footer-links a {
    color: rgba(255, 255, 255, 0.8);
    text-decoration: none;
    font-size: 1.1rem;
    transition: all 0.3s ease;
    display: inline-flex;
    align-items: center;
}

.footer-links a:hover {
    color: var(--primary-color);
    transform: translateX(10px);
}

.footer-links a i {
    margin-right: 10px;
    font-size: 0.9rem;
    transition: transform 0.3s ease;
}

.footer-links a:hover i {
    transform: rotate(45deg);
}

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

.footer-contact-item {
    display: flex;
    align-items: flex-start;
    gap: 15px;
    margin-bottom: 20px;
    padding: 15px;
    border-radius: 12px;
    background: rgba(255, 255, 255, 0.05);
    transition: all 0.3s ease;
}

.footer-contact-item:hover {
    background: rgba(255, 255, 255, 0.1);
    transform: translateX(10px);
}

.contact-icon {
    width: 40px;
    height: 40px;
    background: var(--primary-color);
    border-radius: 10px;
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 1.2rem;
    color: var(--white-color);
    transition: all 0.3s ease;
}

.footer-contact-item:hover .contact-icon {
    transform: rotateY(180deg);
}

.contact-info p {
    color: rgb(7 7 7 / 80%);
    font-size: 1rem;
    line-height: 1.6;
    margin: 0;
}

.footer-bottom {
    padding-top: 40px;
    border-top: 1px solid rgba(255, 255, 255, 0.1);
    text-align: center;
}

.footer-bottom p {
    color: rgba(255, 255, 255, 0.6);
    font-size: 1rem;
}

.footer-bottom a {
    color: var(--primary-color);
    text-decoration: none;
    transition: color 0.3s ease;
}

.footer-bottom a:hover {
    color: var(--white-color);
}

/* 响应式调整 */
@media (max-width: 992px) {
    .footer-content {
        grid-template-columns: repeat(2, 1fr);
        gap: 40px;
    }
}

@media (max-width: 768px) {
    .footer-content {
        grid-template-columns: 1fr;
        gap: 40px;
    }

    .footer-links h3 {
        font-size: 1.3rem;
    }
}

@media (max-width: 576px) {
    .footer {
        padding: 80px 0 30px;
    }

    .footer-social {
        justify-content: center;
    }

    .footer-links {
        text-align: center;
    }

    .footer-links h3::after {
        left: 50%;
        transform: translateX(-50%);
    }

    .footer-contact-item {
        flex-direction: column;
        align-items: center;
        text-align: center;
    }
}

/* ==========================================================================
   全球鹰模块
   ========================================================================== */

/* ==========================================================================
   关于我们模块
   ========================================================================== */
.about-section {
    padding: 120px 0;
    background: linear-gradient(135deg, var(--light-color) 0%, var(--white-color) 100%);
    position: relative;
    overflow: hidden;
}

.about-pattern {
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background-image: 
        radial-gradient(circle at 10% 20%, rgba(var(--primary-rgb), 0.05) 0%, transparent 40%),
        radial-gradient(circle at 90% 80%, rgba(var(--primary-rgb), 0.05) 0%, transparent 40%),
        linear-gradient(45deg, rgba(var(--primary-rgb), 0.02) 0%, transparent 70%);
    animation: patternFloat 20s linear infinite;
}

@keyframes patternFloat {
    0% { background-position: 0% 0%; }
    100% { background-position: 100% 100%; }
}

/* 公司简介样式 */
.about-intro {
    display: grid;
    grid-template-columns: 1.2fr 1fr;
    gap: 60px;
    margin-bottom: 100px;
}

.intro-image {
    display: grid;
    gap: 20px;
}

.image-main {
    position: relative;
    border-radius: 20px;
    overflow: hidden;
    box-shadow: 0 25px 50px rgba(0, 0, 0, 0.15);
}

.image-main img {
    width: 100%;
    height: 400px;
    object-fit: cover;
    transition: transform 0.8s cubic-bezier(0.4, 0, 0.2, 1);
}

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

.image-overlay {
    position: absolute;
    bottom: 0;
    left: 0;
    right: 0;
    padding: 20px;
    background: linear-gradient(to top, rgba(0,0,0,0.8), transparent);
    color: var(--white-color);
}

.image-overlay span {
    font-size: 1.2rem;
    font-weight: 500;
}

.image-grid {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: 20px;
}

.grid-item {
    position: relative;
    border-radius: 15px;
    overflow: hidden;
    box-shadow: 0 15px 30px rgba(0, 0, 0, 0.1);
}

.grid-item img {
    width: 100%;
    height: 150px;
    object-fit: cover;
    transition: transform 0.5s ease;
}

.grid-item:hover img {
    transform: scale(1.1);
}

.grid-overlay {
    position: absolute;
    bottom: 0;
    left: 0;
    right: 0;
    padding: 15px;
    background: linear-gradient(to top, rgba(0,0,0,0.8), transparent);
    color: var(--white-color);
    font-size: 0.9rem;
    text-align: center;
    transform: translateY(100%);
    transition: transform 0.3s ease;
}

.grid-item:hover .grid-overlay {
    transform: translateY(0);
}

.intro-content {
    padding: 40px 0;
}

.content-badge {
    display: inline-flex;
    align-items: center;
    gap: 10px;
    background: linear-gradient(45deg, var(--primary-color), var(--secondary-color));
    color: var(--white-color);
    padding: 10px 25px;
    border-radius: 25px;
    margin-bottom: 30px;
    box-shadow: 0 5px 15px rgba(33, 150, 243, 0.3);
    transform: translateY(-5px);
    transition: all 0.3s ease;
}

.content-badge:hover {
    transform: translateY(-8px);
    box-shadow: 0 8px 20px rgba(33, 150, 243, 0.4);
}

.badge-icon {
    font-size: 1.2rem;
}

.badge-text {
    font-size: 1.1rem;
    font-weight: 500;
}

.intro-content h3 {
    font-size: 2.8rem;
    background: linear-gradient(45deg, var(--dark-color), var(--primary-color));
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    margin-bottom: 25px;
    line-height: 1.3;
}

.intro-text {
    color: var(--text-color);
    font-size: 1.1rem;
    line-height: 1.8;
    margin-bottom: 40px;
}

.intro-highlights {
    display: grid;
    grid-template-columns: repeat(2, 1fr);
    gap: 30px;
}

.highlight-item {
    display: flex;
    align-items: flex-start;
    gap: 20px;
    padding: 25px;
    background: rgba(255, 255, 255, 0.8);
    border-radius: 20px;
    box-shadow: 0 10px 30px rgba(0, 0, 0, 0.05);
    backdrop-filter: blur(10px);
    transition: all 0.3s ease;
}

.highlight-item:hover {
    transform: translateY(-5px);
    box-shadow: 0 15px 35px rgba(0, 0, 0, 0.1);
}

.highlight-icon {
    width: 60px;
    height: 60px;
    background: linear-gradient(135deg, var(--primary-color), var(--secondary-color));
    border-radius: 18px;
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 24px;
    color: var(--white-color);
    transition: all 0.5s ease;
}

.highlight-item:hover .highlight-icon {
    transform: rotateY(180deg) scale(1.1);
}

.highlight-info h4 {
    font-size: 1.3rem;
    color: var(--dark-color);
    margin-bottom: 10px;
}

.highlight-info p {
    color: var(--text-color);
    font-size: 1rem;
    line-height: 1.6;
}

/* 核心优势样式 */
.about-advantages {
    margin-bottom: 100px;
}

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

.advantages-header h3 {
    font-size: 2.5rem;
    background: linear-gradient(45deg, var(--dark-color), var(--primary-color));
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    margin-bottom: 15px;
}

.advantages-grid {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: 30px;
}

.advantage-card {
    position: relative;
    padding: 40px 30px;
    background: rgba(255, 255, 255, 0.9);
    border-radius: 24px;
    box-shadow: 0 15px 35px rgba(0, 0, 0, 0.08);
    overflow: hidden;
    transition: all 0.4s cubic-bezier(0.4, 0, 0.2, 1);
}

.advantage-card:hover {
    transform: translateY(-10px);
    box-shadow: 0 20px 40px rgba(0, 0, 0, 0.12);
}

.card-icon {
    width: 70px;
    height: 70px;
    background: linear-gradient(135deg, var(--primary-color), var(--secondary-color));
    border-radius: 20px;
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 28px;
    color: var(--white-color);
    margin-bottom: 25px;
    transition: all 0.5s ease;
}

.advantage-card:hover .card-icon {
    transform: rotateY(180deg) scale(1.1);
}

.advantage-card h4 {
    font-size: 1.5rem;
    color: var(--dark-color);
    margin-bottom: 15px;
}

.advantage-card p {
    color: var(--text-color);
    font-size: 1rem;
    line-height: 1.6;
    margin-bottom: 20px;
}

.card-features {
    list-style: none;
    margin: 0;
    padding: 0;
}

.card-features li {
    color: var(--text-color);
    margin-bottom: 10px;
    padding-left: 25px;
    position: relative;
}

.card-features li::before {
    content: '→';
    position: absolute;
    left: 0;
    color: var(--primary-color);
}

.card-bg {
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background: linear-gradient(45deg, 
        rgba(33, 150, 243, 0.1),
        rgba(33, 150, 243, 0)
    );
    opacity: 0;
    transition: opacity 0.3s ease;
}

.advantage-card:hover .card-bg {
    opacity: 1;
}

/* 发展历程样式 */
.about-timeline {
    margin-bottom: 100px;
}

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

.timeline-header h3 {
    font-size: 2.5rem;
    background: linear-gradient(45deg, var(--dark-color), var(--primary-color));
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    margin-bottom: 15px;
}

.timeline-container {
    position: relative;
    max-width: 1000px;
    margin: 0 auto;
}

.timeline-container::before {
    content: '';
    position: absolute;
    top: 0;
    left: 50%;
    transform: translateX(-50%);
    width: 2px;
    height: 100%;
    background: linear-gradient(to bottom, 
        var(--primary-color),
        var(--secondary-color)
    );
}

.timeline-item {
    position: relative;
    margin-bottom: 60px;
    width: 50%;
    padding-right: 50px;
}

.timeline-item:nth-child(even) {
    margin-left: auto;
    padding-right: 0;
    padding-left: 50px;
}

.timeline-dot {
    position: absolute;
    right: -9px;
    top: 0;
    width: 20px;
    height: 20px;
    background: var(--primary-color);
    border-radius: 50%;
    border: 4px solid var(--white-color);
    box-shadow: 0 0 0 4px rgba(33, 150, 243, 0.2);
    transition: all 0.3s ease;
}

.timeline-item:nth-child(even) .timeline-dot {
    right: auto;
    left: -11px;
}

.timeline-item:hover .timeline-dot {
    transform: scale(1.2);
    box-shadow: 0 0 0 6px rgba(33, 150, 243, 0.3);
}

.timeline-content {
    background: rgba(255, 255, 255, 0.9);
    padding: 30px;
    border-radius: 15px;
    box-shadow: 0 15px 35px rgba(0, 0, 0, 0.08);
    transition: all 0.3s ease;
}

.timeline-content:hover {
    transform: translateY(-5px);
    box-shadow: 0 20px 40px rgba(0, 0, 0, 0.12);
}

.timeline-year {
    display: inline-block;
    background: linear-gradient(45deg, var(--primary-color), var(--secondary-color));
    color: var(--white-color);
    padding: 5px 15px;
    border-radius: 15px;
    font-size: 0.9rem;
    margin-bottom: 15px;
}

.timeline-content h4 {
    font-size: 1.3rem;
    color: var(--dark-color);
    margin-bottom: 10px;
}

.timeline-content p {
    color: var(--text-color);
    font-size: 1rem;
    line-height: 1.6;
    margin-bottom: 20px;
}

.timeline-content img {
    width: 100%;
    height: 200px;
    object-fit: cover;
    border-radius: 10px;
    transition: transform 0.5s ease;
}

.timeline-content:hover img {
    transform: scale(1.05);
}

/* 数据统计样式 */
.about-stats {
    display: grid;
    grid-template-columns: repeat(4, 1fr);
    gap: 30px;
}

.stat-item {
    text-align: center;
    padding: 35px 25px;
    background: rgba(255, 255, 255, 0.9);
    border-radius: 24px;
    box-shadow: 0 15px 35px rgba(0, 0, 0, 0.08);
    transition: all 0.4s cubic-bezier(0.4, 0, 0.2, 1);
    position: relative;
    overflow: hidden;
}

.stat-icon {
    width: 60px;
    height: 60px;
    margin: 0 auto 20px;
    background: linear-gradient(135deg, var(--primary-color), var(--secondary-color));
    border-radius: 18px;
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 24px;
    color: var(--white-color);
    transition: all 0.5s ease;
}

.stat-item:hover .stat-icon {
    transform: rotateY(180deg) scale(1.1);
}

.stat-number {
    display: block;
    font-size: 2rem;
    font-weight: 700;
    background: linear-gradient(45deg, var(--primary-color), var(--secondary-color));
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    margin-bottom: 10px;
    position: relative;
}

.stat-number::after {
    content: '+';
    font-size: 1.5rem;
    position: absolute;
    top: 0;
    right: -15px;
    background: inherit;
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
}

.stat-label {
    color: var(--text-color);
    font-size: 1.1rem;
    font-weight: 500;
}

/* 响应式调整 */
@media (max-width: 1200px) {
    .about-intro {
        grid-template-columns: 1fr;
        gap: 40px;
    }

    .advantages-grid {
        grid-template-columns: repeat(2, 1fr);
    }

    .about-stats {
        grid-template-columns: repeat(2, 1fr);
    }
}

@media (max-width: 768px) {
    .intro-highlights {
        grid-template-columns: 1fr;
    }

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

    .timeline-container::before {
        left: 0;
    }

    .timeline-item {
        width: 100%;
        padding-left: 30px;
        padding-right: 0;
    }

    .timeline-item:nth-child(even) {
        padding-left: 30px;
    }

    .timeline-dot {
        left: -9px;
        right: auto;
    }

    .timeline-item:nth-child(even) .timeline-dot {
        left: -9px;
    }
}

@media (max-width: 576px) {
    .image-grid {
        grid-template-columns: 1fr;
    }

    .intro-content h3 {
        font-size: 2rem;
    }

    .highlight-item {
        flex-direction: column;
        align-items: center;
        text-align: center;
    }

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