:root {
    --primary: #2B5AED;
    --primary-light: #4B7BFF;
    --primary-dark: #1A3FA0;
    --secondary: #00D6C9;
    --dark: #1A1F3D;
    --gray: #6B7280;
    --light: #F5F7FA;
    --white: #FFFFFF;
    
    --shadow-sm: 0 2px 4px rgba(0,0,0,0.05);
    --shadow-md: 0 4px 12px rgba(0,0,0,0.08);
    --shadow-lg: 0 8px 24px rgba(0,0,0,0.12);
    
    --radius-sm: 4px;
    --radius-md: 8px;
    --radius-lg: 16px;
}

/* 基础样式 */
* {
    margin: 0;
    padding: 0;
    box-sizing: border-box;
}

body {
    font-family: "PingFang SC", "Microsoft YaHei", sans-serif;
    line-height: 1.6;
    color: var(--dark);
    background: var(--white);
}

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

/* 主横幅 */
.hero {
    position: relative;
    background: linear-gradient(135deg, var(--primary) 0%, var(--primary-dark) 100%);
    color: var(--white);
    padding: 160px 0 120px;
    overflow: hidden;
}

.hero-particles {
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    background: 
        radial-gradient(circle at 20% 20%, rgba(255,255,255,0.1) 0%, transparent 25%),
        radial-gradient(circle at 80% 80%, rgba(255,255,255,0.1) 0%, transparent 25%);
    animation: particleMove 20s linear infinite;
}

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

.hero-content {
    position: relative;
    z-index: 1;
    text-align: center;
}

.hero-content h1 {
    font-size: 56px;
    font-weight: bold;
    margin-bottom: 24px;
    line-height: 1.2;
    letter-spacing: 2px;
}

.subtitle {
    font-size: 20px;
    opacity: 0.9;
    margin-bottom: 60px;
    max-width: 600px;
    margin-left: auto;
    margin-right: auto;
}

.hero-stats {
    display: flex;
    justify-content: center;
    gap: 80px;
    margin-top: 80px;
}

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

.stat-number {
    display: block;
    font-size: 52px;
    font-weight: bold;
    margin-bottom: 12px;
    background: linear-gradient(135deg, var(--white) 0%, rgba(255,255,255,0.8) 100%);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
}

.stat-label {
    font-size: 16px;
    opacity: 0.8;
    letter-spacing: 1px;
}

/* 公司简介 */
.about-intro {
    padding: 120px 0;
    background: var(--white);
}

.intro-grid {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 80px;
    align-items: center;
}

.intro-content h2 {
    font-size: 42px;
    margin-bottom: 24px;
    color: var(--dark);
    position: relative;
}

.intro-content h2::after {
    content: '';
    position: absolute;
    left: 0;
    bottom: -12px;
    width: 60px;
    height: 4px;
    background: var(--primary);
    border-radius: 2px;
}

.lead {
    font-size: 18px;
    color: var(--gray);
    margin-bottom: 48px;
    line-height: 1.8;
}

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

.value-item {
    text-align: center;
    padding: 24px;
    border-radius: var(--radius-md);
    transition: all 0.3s ease;
}

.value-item:hover {
    background: var(--light);
    transform: translateY(-5px);
}

.value-item i {
    font-size: 36px;
    color: var(--primary);
    margin-bottom: 16px;
}

.value-item h3 {
    font-size: 18px;
    margin-bottom: 8px;
    color: var(--dark);
}

.value-item p {
    color: var(--gray);
    font-size: 14px;
}

.intro-image {
    position: relative;
    overflow: hidden;
    border-radius: var(--radius-lg);
    box-shadow: var(--shadow-lg);
}

.intro-image img {
    width: 100%;
    height: auto;
    transition: transform 0.3s ease;
}

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

/* 发展历程 */
.timeline {
    padding: 120px 0;
    background: var(--light);
    position: relative;
}

.section-title {
    text-align: center;
    font-size: 42px;
    margin-bottom: 80px;
    position: relative;
}

.section-title::after {
    content: '';
    position: absolute;
    left: 50%;
    bottom: -20px;
    width: 60px;
    height: 4px;
    background: var(--primary);
    border-radius: 2px;
    transform: translateX(-50%);
}

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

.timeline-wrapper::before {
    content: '';
    position: absolute;
    left: 50%;
    top: 0;
    bottom: 0;
    width: 2px;
    background: var(--primary-light);
    transform: translateX(-50%);
}

.timeline-item {
    position: relative;
    margin-bottom: 80px;
    width: 50%;
    padding: 30px;
    background: var(--white);
    border-radius: var(--radius-md);
    box-shadow: var(--shadow-md);
}

.timeline-item:nth-child(odd) {
    left: 0;
    padding-right: 60px;
}

.timeline-item:nth-child(even) {
    left: 50%;
    padding-left: 60px;
}

.timeline-item::before {
    content: '';
    position: absolute;
    width: 20px;
    height: 20px;
    background: var(--primary);
    border: 4px solid var(--white);
    border-radius: 50%;
    top: 30px;
    box-shadow: var(--shadow-sm);
}

.timeline-item:nth-child(odd)::before {
    right: -10px;
}

.timeline-item:nth-child(even)::before {
    left: -10px;
}

.time {
    font-size: 28px;
    font-weight: bold;
    color: var(--primary);
    margin-bottom: 12px;
}

.timeline-item h3 {
    font-size: 20px;
    margin-bottom: 8px;
    color: var(--dark);
}

.timeline-item p {
    color: var(--gray);
}

/* 企业文化 */
.culture {
    padding: 120px 0;
    background: var(--white);
}

.culture-grid {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: 40px;
}

.culture-item {
    padding: 40px;
    background: var(--light);
    border-radius: var(--radius-lg);
    text-align: center;
    transition: all 0.3s ease;
}

.culture-item:hover {
    transform: translateY(-10px);
    box-shadow: var(--shadow-lg);
    background: var(--white);
}

.culture-item i {
    font-size: 48px;
    color: var(--primary);
    margin-bottom: 24px;
}

.culture-item h3 {
    font-size: 24px;
    margin-bottom: 16px;
    color: var(--dark);
}

.culture-item p {
    color: var(--gray);
    font-size: 16px;
}

/* 联系我们 */
.contact {
    padding: 120px 0;
    background: var(--light);
}

.contact-wrapper {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 80px;
    align-items: center;
}

.contact-info h2 {
    font-size: 42px;
    margin-bottom: 20px;
    position: relative;
}

.contact-info h2::after {
    content: '';
    position: absolute;
    left: 0;
    bottom: -12px;
    width: 60px;
    height: 4px;
    background: var(--primary);
    border-radius: 2px;
}

.contact-info p {
    color: var(--gray);
    margin-bottom: 48px;
    font-size: 18px;
}

.info-list {
    display: grid;
    gap: 24px;
}

.info-item {
    display: flex;
    align-items: center;
    gap: 20px;
}

.info-item i {
    width: 48px;
    height: 48px;
    background: var(--white);
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    color: var(--primary);
    font-size: 20px;
    box-shadow: var(--shadow-sm);
}

.info-item span {
    color: var(--gray);
    font-size: 16px;
}

.contact-form {
    background: var(--white);
    padding: 48px;
    border-radius: var(--radius-lg);
    box-shadow: var(--shadow-lg);
}

.form-group {
    margin-bottom: 24px;
}

.form-group input,
.form-group textarea {
    width: 100%;
    padding: 16px;
    border: 1px solid #E5E7EB;
    border-radius: var(--radius-md);
    font-size: 16px;
    transition: all 0.3s ease;
}

.form-group input:focus,
.form-group textarea:focus {
    outline: none;
    border-color: var(--primary);
    box-shadow: 0 0 0 3px rgba(43, 90, 237, 0.1);
}

.form-group textarea {
    height: 140px;
    resize: none;
}

.submit-btn {
    width: 100%;
    padding: 16px;
    background: var(--primary);
    color: var(--white);
    border: none;
    border-radius: var(--radius-md);
    font-size: 16px;
    font-weight: 500;
    cursor: pointer;
    transition: all 0.3s ease;
}

.submit-btn:hover {
    background: var(--primary-dark);
    transform: translateY(-2px);
}

/* 响应式设计 */
@media (max-width: 992px) {
    .container {
        padding: 0 24px;
    }

    .hero {
        padding: 100px 0 80px;
    }

    .hero-content h1 {
        font-size: 42px;
    }

    .subtitle {
        font-size: 18px;
    }

    .hero-stats {
        flex-wrap: wrap;
        gap: 40px;
    }

    .stat-number {
        font-size: 42px;
    }

    .intro-grid,
    .contact-wrapper {
        grid-template-columns: 1fr;
        gap: 60px;
    }

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

@media (max-width: 768px) {
    .hero {
        padding: 80px 0 60px;
    }

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

    .subtitle {
        font-size: 16px;
        margin-bottom: 40px;
    }

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

    .section-title {
        font-size: 36px;
        margin-bottom: 60px;
    }

    .timeline-item {
        width: 100%;
        padding: 24px;
        margin-left: 30px;
    }

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

    .timeline-item::before {
        left: -40px !important;
    }

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

    .contact-form {
        padding: 30px;
    }
}

@media (max-width: 480px) {
    .hero-content h1 {
        font-size: 32px;
    }

    .stat-number {
        font-size: 36px;
    }

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

    .intro-content h2,
    .contact-info h2 {
        font-size: 32px;
    }

    .lead {
        font-size: 16px;
    }
}

/* 触摸设备优化 */
@media (hover: none) {
    .culture-item:hover,
    .value-item:hover {
        transform: none;
    }
}

/* 减少动画 */
@media (prefers-reduced-motion: reduce) {
    * {
        animation-duration: 0.01ms !important;
        animation-iteration-count: 1 !important;
        transition-duration: 0.01ms !important;
        scroll-behavior: auto !important;
    }
}

/* 暗色模式支持 */
@media (prefers-color-scheme: dark) {
    :root {
        --white: #1A1F3D;
        --light: #2A2F4D;
        --dark: #F3F4F6;
        --gray: #9CA3AF;
    }
}

/* 性能优化 */
.hero-content,
.intro-grid,
.timeline-item {
    will-change: transform;
    transform: translateZ(0);
}

/* 动画效果 */
[data-aos] {
    opacity: 0;
    transform: translateY(20px);
    transition: all 0.6s ease;
}

[data-aos].aos-animate {
    opacity: 1;
    transform: translateY(0);
}

/* 企业荣誉 */
.honors {
    padding: 120px 0;
    background: var(--light);
}

.honors-grid {
    display: grid;
    grid-template-columns: repeat(4, 1fr);
    gap: 30px;
    margin-bottom: 60px;
}

.honor-item {
    background: var(--white);
    border-radius: var(--radius-lg);
    overflow: hidden;
    box-shadow: var(--shadow-md);
    transition: all 0.3s ease;
}

.honor-item:hover {
    transform: translateY(-10px);
    box-shadow: var(--shadow-lg);
}

.honor-image {
    position: relative;
    padding-top: 75%; /* 4:3 比例 */
    overflow: hidden;
    background: #f8f9fa;
}

.honor-image img {
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    object-fit: contain;
    padding: 20px;
    transition: transform 0.3s ease;
}

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

.honor-item h3 {
    padding: 20px;
    margin: 0;
    font-size: 16px;
    color: var(--dark);
    text-align: center;
    font-weight: 500;
}

.honors-more {
    margin-top: 80px;
}

.honor-stats {
    display: flex;
    justify-content: center;
    gap: 80px;
    padding: 40px;
    background: var(--white);
    border-radius: var(--radius-lg);
    box-shadow: var(--shadow-md);
}

.stat-group {
    text-align: center;
}

.stat-group .number {
    display: block;
    font-size: 42px;
    font-weight: bold;
    color: var(--primary);
    margin-bottom: 8px;
}

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

/* 响应式适配 */
@media (max-width: 1200px) {
    .honors-grid {
        grid-template-columns: repeat(3, 1fr);
    }
}

@media (max-width: 992px) {
    .honors-grid {
        grid-template-columns: repeat(2, 1fr);
    }
    
    .honor-stats {
        flex-direction: column;
        gap: 40px;
    }
}

@media (max-width: 768px) {
    .honors-grid {
        grid-template-columns: 1fr;
        max-width: 400px;
        margin-left: auto;
        margin-right: auto;
    }
}

/* 暗色模式适配 */
@media (prefers-color-scheme: dark) {
    .honor-image {
        background: #2A2F4D;
    }
    
    .honor-item {
        background: var(--dark);
    }
    
    .honor-item h3 {
        color: var(--light);
    }
}

/* 触摸设备优化 */
@media (hover: none) {
    .honor-item:hover {
        transform: none;
    }
    
    .honor-item:hover .honor-image img {
        transform: none;
    }
}