:root {
    --primary-color: #2a27ff;
    --secondary-color: #00f2fe;
    --accent-color: #ff00d6;
    --light-color: #f0f4ff;
    --dark-color: #0a0e2a;
    --gradient: linear-gradient(135deg, var(--primary-color), var(--secondary-color));
    --gradient-reverse: linear-gradient(135deg, var(--secondary-color), var(--primary-color));
    --neon-glow: 0 0 10px rgba(42, 39, 255, 0.3), 0 0 20px rgba(0, 242, 254, 0.2);
    --card-shadow: 0 10px 30px rgba(0, 0, 0, 0.08);
    --hover-shadow: 0 15px 35px rgba(42, 39, 255, 0.15);
    --deep-shadow: 0 20px 40px rgba(0, 0, 0, 0.2);
}

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

body {
    font-family: 'Roboto', sans-serif;
    background-color: #f8faff;
    color: #333;
    overflow-x: hidden;
    background-image: 
        radial-gradient(circle at 10% 20%, rgba(42, 39, 255, 0.03) 0%, transparent 20%),
        radial-gradient(circle at 90% 80%, rgba(0, 242, 254, 0.03) 0%, transparent 20%);
}

h1, h2, h3, h4, h5, h6 {
    font-family: 'Orbitron', sans-serif;
    font-weight: 700;
}

.cyber-container {
    max-width: 1800px;
    margin: 0 auto;
    padding: 0 20px;
}

/* 展会特色区块样式 */
#features.features {
    padding: 100px 0;
    background: linear-gradient(135deg, #0a0e2a 0%, #1a1f4a 100%);
    position: relative;
    overflow: hidden;
}

#features.features .dynamic-bg {
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    z-index: 0;
}

#features.features .bg-particle {
    position: absolute;
    background: var(--gradient);
    border-radius: 50%;
    opacity: 0.1;
    animation: float 6s infinite ease-in-out;
}

#features.features .bg-line {
    position: absolute;
    background: linear-gradient(90deg, transparent, var(--secondary-color), transparent);
    opacity: 0.05;
    animation: shimmer 8s infinite linear;
}

@keyframes float {
    0%, 100% { transform: translateY(0) scale(1); }
    50% { transform: translateY(-20px) scale(1.1); }
}

@keyframes shimmer {
    0% { opacity: 0.05; }
    50% { opacity: 0.1; }
    100% { opacity: 0.05; }
}

#features.features .container {
    position: relative;
    z-index: 2;
}

#features.features .section-title {
    text-align: center;
    margin-bottom: 60px;
}

#features.features .section-title h2 {
    font-size: 3.5rem;
    color: white;
    margin-bottom: 15px;
    position: relative;
    display: inline-block;
    text-shadow: 0 0 20px rgba(0, 242, 254, 0.5);
}

#features.features .section-title h2:after {
    content: '';
    position: absolute;
    bottom: -15px;
    left: 50%;
    transform: translateX(-50%);
    width: 100px;
    height: 4px;
    background: var(--gradient);
    border-radius: 2px;
}

#features.features .section-title p {
    color: rgba(255, 255, 255, 0.7);
    font-size: 1.2rem;
    letter-spacing: 2px;
    margin-top: 20px;
}

#features.features .features-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(350px, 1fr));
    gap: 40px;
}

#features.features .feature-card {
    background: rgba(255, 255, 255, 0.05);
    backdrop-filter: blur(10px);
    border-radius: 20px;
    padding: 40px 30px;
    text-align: center;
    box-shadow: 0 10px 30px rgba(0, 0, 0, 0.2);
    transition: all 0.4s ease;
    border: 1px solid rgba(255, 255, 255, 0.1);
    position: relative;
    overflow: hidden;
}

#features.features .feature-card:before {
    content: '';
    position: absolute;
    top: 0;
    left: -100%;
    width: 100%;
    height: 100%;
    background: linear-gradient(90deg, transparent, rgba(255, 255, 255, 0.1), transparent);
    transition: left 0.6s;
}

#features.features .feature-card:hover:before {
    left: 100%;
}

#features.features .feature-card:hover {
    transform: translateY(-10px);
    box-shadow: 0 20px 40px rgba(0, 0, 0, 0.3);
    border-color: rgba(42, 39, 255, 0.3);
}

#features.features .feature-icon {
    width: 80px;
    height: 80px;
    margin: 0 auto 25px;
    background: var(--gradient);
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 2rem;
    color: white;
    box-shadow: 0 5px 15px rgba(42, 39, 255, 0.4);
}

#features.features .feature-card h3 {
    font-size: 1.8rem;
    margin-bottom: 20px;
    color: white;
}

#features.features .feature-card p {
    color: rgba(255, 255, 255, 0.8);
    line-height: 1.7;
    font-size: 1.1rem;
}

/* 数字人代言展示区 */
.digital-anchors {
    background: linear-gradient(135deg, #0a0e2a 0%, #1a237e 100%);
    color: white;
    position: relative;
    overflow: hidden;
}

.digital-anchors .section-title h2 {
    font-size: 2.8rem;
    color: #fff;
    margin-bottom: 15px;
    position: relative;
    display: inline-block;
}
.anchors-slider {
    position: relative;
    margin: 0 auto;
    overflow: hidden;
    border-radius: 20px;
    box-shadow: 0 20px 50px rgba(0, 0, 0, 0.3);
}

.anchor-slide {
    display: none;
    padding: 60px 40px;
    background: rgba(255, 255, 255, 0.05);
    border-radius: 20px;
    border: 1px solid rgba(0, 242, 254, 0.2);
    backdrop-filter: blur(10px);
}

.anchor-slide.active {
    display: flex;
    animation: fadeIn 1s ease;
}

@keyframes fadeIn {
    from { opacity: 0; }
    to { opacity: 1; }
}

.anchor-image {
    flex: 0 0 40%;
    border-radius: 15px;
    overflow: hidden;
    box-shadow: 0 15px 30px rgba(0, 0, 0, 0.3);
}

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

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

.anchor-content {
    flex: 0 0 60%;
    padding: 0 40px;
    display: flex;
    flex-direction: column;
    justify-content: center;
}

.anchor-name {
    font-size: 2.5rem;
    margin-bottom: 10px;
    color: var(--accent-color);
    font-family: var(--font-tech);
    text-shadow: 0 0 10px var(--accent-color);
}

.anchor-title {
    font-size: 1.3rem;
    color: #aaa;
    margin-bottom: 30px;
}

.anchor-quote {
    font-style: italic;
    margin-bottom: 30px;
    padding: 20px;
    background: rgba(0, 242, 254, 0.1);
    border-left: 3px solid var(--accent-color);
    position: relative;
    font-size: 1.2rem;
    line-height: 1.6;
}

.anchor-description {
    margin-bottom: 30px;
    font-size: 1.1rem;
    line-height: 1.8;
    opacity: 0.9;
}

.anchor-talk {
    margin-top: 20px;
    padding: 20px;
    background: rgba(255, 62, 130, 0.1);
    border-radius: 10px;
    font-size: 1rem;
    line-height: 1.6;
    border-left: 3px solid var(--primary-color);
}

.typing-effect {
    border-right: 2px solid var(--accent-color);
    margin: 0;
}

.typing-effect {
    border-right: 2px solid var(--accent-color);
    margin: 0;
}

.typing-line {
    overflow: hidden;
    white-space: nowrap;
    width: 0;
    animation: typing 2s steps(40, end) forwards, 
            blink-caret 0.75s step-end infinite;
}

.typing-line:nth-child(1) { animation-delay: 0.5s; }
.typing-line:nth-child(2) { animation-delay: 2.8s; }
.typing-line:nth-child(3) { animation-delay: 5.1s; }
/* 更多行... */

@keyframes typing {
    0% { width: 0; opacity: 0; }
    1% { opacity: 1; }
    100% { width: 100%; opacity: 1; }
}

@keyframes blink-caret {
    from, to { border-color: transparent }
    50% { border-color: var(--accent-color) }
}

.anchors-nav {
    display: flex;
    justify-content: center;
    margin-top: 30px;
    gap: 15px;
}

.anchor-nav-item {
    width: 12px;
    height: 12px;
    border-radius: 50%;
    background: rgba(255, 255, 255, 0.3);
    cursor: pointer;
    transition: all 0.3s;
}

.anchor-nav-item.active {
    background: var(--accent-color);
    box-shadow: 0 0 10px var(--accent-color);
    transform: scale(1.2);
}

/* 三维数字孪生介绍区域 */
.digital-twin-intro {
    background: linear-gradient(135deg, #f8f9fa 0%, #eef2f7 100%);
    position: relative;
    overflow: hidden;
}

.twin-content {
    background: rgba(255, 255, 255, 0.9);
    padding: 40px;
    border-radius: 20px;
    box-shadow: 0 20px 40px rgba(0, 0, 0, 0.1);
    backdrop-filter: blur(10px);
    border: 1px solid rgba(255, 255, 255, 0.5);
    font-size: 1.2rem;
    line-height: 1.8;
    text-align: justify;
    font-family: 'Orbitron', sans-serif;
    color: #333;
    position: relative;
    z-index: 1;
}

.twin-content::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background: linear-gradient(45deg, rgba(108, 92, 231, 0.05), rgba(0, 242, 254, 0.05));
    z-index: -1;
    border-radius: 20px;
}

.twin-content h3 {
    font-size: 2.5rem;
    text-align: center;
    margin-bottom: 30px;
    color: var(--secondary-color);
    text-shadow: 0 0 10px rgba(108, 92, 231, 0.3);
    font-family: var(--font-tech);
}
/* 三维数字孪生技术展望区块样式 */
#digital-twin-intro.digital-twin-intro {
    padding: 100px 0;
    background: linear-gradient(135deg, #0a0e2a 0%, #1a1f4a 100%);
    position: relative;
    overflow: hidden;
}

#digital-twin-intro.digital-twin-intro .dynamic-bg {
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    z-index: 0;
}

#digital-twin-intro.digital-twin-intro .bg-particle {
    position: absolute;
    background: var(--gradient);
    border-radius: 50%;
    opacity: 0.1;
    animation: float 7s infinite ease-in-out;
}

#digital-twin-intro.digital-twin-intro .bg-line {
    position: absolute;
    background: linear-gradient(90deg, transparent, var(--primary-color), transparent);
    opacity: 0.05;
    animation: shimmer 12s infinite linear;
}

#digital-twin-intro.digital-twin-intro .container {
    position: relative;
    z-index: 2;
}

#digital-twin-intro.digital-twin-intro .section-title {
    text-align: center;
    margin-bottom: 60px;
}

#digital-twin-intro.digital-twin-intro .section-title h2 {
    font-size: 3.5rem;
    color: white;
    margin-bottom: 15px;
    position: relative;
    display: inline-block;
    text-shadow: 0 0 20px rgba(42, 39, 255, 0.5);
}

#digital-twin-intro.digital-twin-intro .section-title h2:after {
    content: '';
    position: absolute;
    bottom: -15px;
    left: 50%;
    transform: translateX(-50%);
    width: 100px;
    height: 4px;
    background: var(--gradient);
    border-radius: 2px;
}

#digital-twin-intro.digital-twin-intro .section-title p {
    color: rgba(255, 255, 255, 0.7);
    font-size: 1.2rem;
    letter-spacing: 2px;
    margin-top: 20px;
}

#digital-twin-intro.digital-twin-intro .twin-content {
    background: rgba(255, 255, 255, 0.05);
    backdrop-filter: blur(10px);
    border-radius: 20px;
    padding: 50px;
    box-shadow: 0 15px 35px rgba(0, 0, 0, 0.2);
    border: 1px solid rgba(255, 255, 255, 0.1);
}

#digital-twin-intro.digital-twin-intro .twin-content h3 {
    font-size: 2.2rem;
    color: white;
    margin-bottom: 25px;
    text-align: center;
    position: relative;
}

#digital-twin-intro.digital-twin-intro .twin-content h3:after {
    content: '';
    position: absolute;
    bottom: -10px;
    left: 50%;
    transform: translateX(-50%);
    width: 80px;
    height: 3px;
    background: var(--gradient);
    border-radius: 2px;
}

#digital-twin-intro.digital-twin-intro .twin-content p {
    color: rgba(255, 255, 255, 0.8);
    line-height: 1.8;
    font-size: 1.1rem;
    margin-bottom: 25px;
    text-align: justify;
}

/* 响应式设计 */
@media (max-width: 1200px) {
    #features.features .features-grid {
        grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
        gap: 30px;
    }
    
    #digital-anchors.digital-anchors .anchor-slide {
        flex-direction: column;
        height: auto;
    }
    
    #digital-anchors.digital-anchors .anchor-image {
        padding: 30px;
    }
    
    #digital-anchors.digital-anchors .anchor-content {
        padding: 30px;
    }
}

@media (max-width: 992px) {
    #features.features .section-title h2,
    #digital-anchors.digital-anchors .section-title h2,
    #digital-twin-intro.digital-twin-intro .section-title h2 {
        font-size: 2.8rem;
    }
    
    #digital-anchors.digital-anchors .anchors-slider {
        height: auto;
    }
    
    #digital-twin-intro.digital-twin-intro .twin-content {
        padding: 30px;
    }
}

@media (max-width: 768px) {
    #features.features,
    #digital-anchors.digital-anchors,
    #digital-twin-intro.digital-twin-intro {
        padding: 80px 0;
    }
    
    #features.features .section-title h2,
    #digital-anchors.digital-anchors .section-title h2,
    #digital-twin-intro.digital-twin-intro .section-title h2 {
        font-size: 2.2rem;
    }
    
    #features.features .features-grid {
        grid-template-columns: 1fr;
        gap: 25px;
    }
    
    #features.features .feature-card {
        padding: 30px 20px;
    }
    
    #digital-anchors.digital-anchors .anchor-name {
        font-size: 2rem;
    }
    
    #digital-twin-intro.digital-twin-intro .twin-content {
        padding: 20px;
    }
    
    #digital-twin-intro.digital-twin-intro .twin-content h3 {
        font-size: 1.8rem;
    }
}

@media (max-width: 576px) {
    #features.features,
    #digital-anchors.digital-anchors,
    #digital-twin-intro.digital-twin-intro {
        padding: 60px 0;
    }
    
    #features.features .section-title h2,
    #digital-anchors.digital-anchors .section-title h2,
    #digital-twin-intro.digital-twin-intro .section-title h2 {
        font-size: 1.8rem;
    }
    
    #features.features .feature-icon {
        width: 60px;
        height: 60px;
        font-size: 1.5rem;
    }
    
    #digital-anchors.digital-anchors .anchor-image,
    #digital-anchors.digital-anchors .anchor-content {
        padding: 20px;
    }
    
    #digital-anchors.digital-anchors .anchor-name {
        font-size: 1.8rem;
    }
}


/* 其他现有样式保留... */
/* 这里省略了原代码中的其他样式，以保持简洁 */

/* 确保兼容性 */
.section {
    position: relative;
}

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

/* 清除浮动 */
.clearfix::after {
    content: "";
    display: table;
    clear: both;
}

/* 导航栏样式 */
.cyber-header {
    background: rgba(255, 255, 255, 0.98);
    backdrop-filter: blur(10px);
    box-shadow: 0 5px 20px rgba(0, 0, 0, 0.08);
    position: sticky;
    top: 0;
    z-index: 1000;
    border-bottom: 1px solid rgba(42, 39, 255, 0.1);
}

.video-bg {
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    z-index: 0;
}

.video-bg video {
    width: 100%;
    height: 100%;
    object-fit: cover;
}

.video-overlay {
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background: rgba(0, 0, 0, 0.5);
    z-index: 1;
}

.header-content {
    display: flex;
    justify-content: space-between;
    align-items: center;
    padding: 15px 0;
}

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

.logo img {
    height: 50px;
    transition: all 0.3s ease;
}

.logo img:hover {
    transform: scale(1.05);
    filter: drop-shadow(0 0 8px var(--primary-color));
}

.logo-text {
    font-family: 'Orbitron', sans-serif;
    font-weight: 700;
    font-size: 20px;
    background: var(--gradient);
    -webkit-background-clip: text;
    background-clip: text;
    color: transparent;
}

.countdown-box {
    background: var(--gradient);
    border-radius: 12px;
    padding: 12px 20px;
    color: white;
    text-align: center;
    box-shadow: var(--neon-glow);
    animation: pulse 2s infinite;
    position: relative;
    overflow: hidden;
}

.countdown-box::before {
    content: '';
    position: absolute;
    top: -50%;
    left: -50%;
    width: 200%;
    height: 200%;
    background: linear-gradient(to right, transparent, rgba(255, 255, 255, 0.3), transparent);
    transform: rotate(45deg);
    animation: shine 3s infinite;
}

/* 视频展示区域样式 */
.video-section {
    padding: 100px 0;
    background: linear-gradient(to bottom, #ffffff, #f8faff);
    position: relative;
}

.video-section:before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background: url('uploadfile/2025/0726/20250726141425308.jpg') center/cover no-repeat;
    opacity: 0.05;
    z-index: -1;
}

.video-container {
    margin-top: 60px;
}

.main-video {
    border-radius: 20px;
    overflow: hidden;
    box-shadow: var(--deep-shadow);
    margin-bottom: 30px;
    position: relative;
    height: 1000px;
}

.main-video video {
    width: 100%;
    height: 100%;
    object-fit: cover;
    display: block;
}

.video-controls {
    position: absolute;
    bottom: 30px;
    left: 20px;
    display: flex;
    gap: 10px;
    z-index: 10;
}

.video-btn {
    background: var(--gradient);
    color: white;
    border: none;
    border-radius: 50%;
    width: 50px;
    height: 50px;
    display: flex;
    align-items: center;
    justify-content: center;
    cursor: pointer;
    transition: all 0.3s;
    box-shadow: 0 5px 15px rgba(0, 0, 0, 0.2);
}

.video-btn:hover {
    transform: scale(1.1);
    box-shadow: 0 8px 20px rgba(0, 0, 0, 0.3);
}

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

.video-thumb {
    border-radius: 15px;
    overflow: hidden;
    box-shadow: var(--card-shadow);
    position: relative;
    cursor: pointer;
    transition: all 0.3s;
    height: 200px;
}

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

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

.video-thumb:hover img {
    transform: scale(1.1);
}

.video-overlay {
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background: rgba(0, 0, 0, 0.4);
    display: flex;
    align-items: center;
    justify-content: center;
    opacity: 0;
    transition: opacity 0.3s;
}

.video-thumb:hover .video-overlay {
    opacity: 1;
}

.play-icon {
    width: 60px;
    height: 60px;
    background: var(--gradient);
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    color: white;
    font-size: 20px;
    transform: scale(0.8);
    transition: transform 0.3s;
}

.video-thumb:hover .play-icon {
    transform: scale(1);
}

.video-caption {
    position: absolute;
    bottom: 0;
    left: 0;
    width: 100%;
    padding: 15px;
    background: linear-gradient(to top, rgba(0, 0, 0, 0.8), transparent);
    color: white;
}

.video-caption h4 {
    margin-bottom: 5px;
    font-size: 1.1rem;
}

.video-caption p {
    font-size: 0.9rem;
    opacity: 0.8;
}

.video-action {
    text-align: center;
    margin-top: 40px;
}

/* 响应式调整 */
@media (max-width: 992px) {
    .video-grid {
        grid-template-columns: repeat(2, 1fr);
    }
    
    .main-video {
        height: 800px;
    }
}

@media (max-width: 576px) {
    .video-grid {
        grid-template-columns: 1fr;
    }
    
    .main-video {
        height: 600px;
    }
    
    .video-btn {
        width: 40px;
        height: 40px;
    }
}

@keyframes shine {
    0% { left: -50%; }
    100% { left: 100%; }
}

@keyframes pulse {
    0% { box-shadow: 0 0 10px rgba(42, 39, 255, 0.3), 0 0 20px rgba(0, 242, 254, 0.2); }
    50% { box-shadow: 0 0 15px rgba(42, 39, 255, 0.5), 0 0 30px rgba(0, 242, 254, 0.3); }
    100% { box-shadow: 0 0 10px rgba(42, 39, 255, 0.3), 0 0 20px rgba(0, 242, 254, 0.2); }
}

.countdown-box .day-txt {
    font-size: 14px;
    margin-bottom: 5px;
}

.countdown-box .times {
    font-size: 24px;
    font-weight: bold;
    font-family: 'Orbitron', sans-serif;
}

.cyber-nav {
    display: flex;
    gap: 5px;
}

.nav-item {
    padding: 10px 20px;
    border-radius: 8px;
    color: var(--dark-color);
    text-decoration: none;
    font-weight: 500;
    transition: all 0.3s ease;
    position: relative;
    overflow: hidden;
}

.nav-item:before {
    content: '';
    position: absolute;
    bottom: 0;
    left: 0;
    width: 0;
    height: 2px;
    background: var(--gradient);
    transition: width 0.3s ease;
}

.nav-item:hover:before {
    width: 100%;
}

.nav-item:hover {
    color: var(--primary-color);
    background: rgba(42, 39, 255, 0.05);
}

.mobile-menu-btn {
    display: none;
    background: var(--gradient);
    color: white;
    border: none;
    border-radius: 5px;
    padding: 10px 15px;
    font-size: 18px;
    cursor: pointer;
    transition: all 0.3s;
    margin-left: auto;
}

.mobile-menu-btn:hover {
    transform: scale(1.05);
}

/* 主视觉区域 */
.cyber-hero {
    position: relative;
    height: 1080px;
    display: flex;
    align-items: center;
    justify-content: center;
    overflow: hidden;
    margin-bottom: 40px;
}

.hero-bg {
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    z-index: -1;
}

.hero-bg img {
    width: 100%;
    height: 100%;
    object-fit: cover;
}

.hero-bg:before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background: linear-gradient(135deg, rgba(42, 39, 255, 0.2) 0%, rgba(0, 242, 254, 0.2) 100%);
    z-index: 1;
}

.floating-particles {
    position: absolute;
    width: 100%;
    height: 100%;
    top: 0;
    left: 0;
    z-index: 0;
}

.particle {
    position: absolute;
    background: var(--gradient);
    border-radius: 50%;
    opacity: 0.5;
    animation: float 15s infinite linear;
}

@keyframes float {
    0% {
        transform: translateY(0) rotate(0deg);
        opacity: 0.5;
    }
    100% {
        transform: translateY(-100vh) rotate(360deg);
        opacity: 0;
    }
}

.hero-content {
    text-align: center;
    color: white;
    z-index: 2;
    padding: 0 20px;
    max-width: 1000px;
}

.hero-title {
    font-size: 4rem;
    margin-bottom: 20px;
    text-shadow: 0 2px 10px rgba(0, 0, 0, 0.3);
    animation: fadeInUp 1s ease;
    background: linear-gradient(to right, #fff, var(--secondary-color));
    -webkit-background-clip: text;
    background-clip: text;
    color: transparent;
}

.hero-subtitle {
    font-size: 1.5rem;
    margin-bottom: 30px;
    animation: fadeInUp 1s ease 0.2s forwards;
    opacity: 0;
    color: #fff;
    text-shadow: 0 2px 4px rgba(0,0,0,0.3);
}

.hero-buttons {
    display: flex;
    gap: 20px;
    justify-content: center;
    animation: fadeInUp 1s ease 0.4s forwards;
    opacity: 0;
}

.cyber-btn {
    padding: 15px 30px;
    border-radius: 50px;
    font-weight: bold;
    text-transform: uppercase;
    letter-spacing: 1px;
    transition: all 0.3s ease;
    border: none;
    cursor: pointer;
    position: relative;
    overflow: hidden;
    font-family: 'Orbitron', sans-serif;
    z-index: 1;
}

.btn-primary {
    background: var(--gradient);
    color: white;
    box-shadow: 0 5px 15px rgba(42, 39, 255, 0.4);
}

.btn-primary:hover {
    transform: translateY(-3px);
    box-shadow: 0 8px 25px rgba(42, 39, 255, 0.6);
}

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

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

/* 数字人直播区域 */
.digital-human-section {
    padding: 100px 0;
    background: linear-gradient(to bottom, #f8faff, #ffffff);
    position: relative;
}

.digital-human-section:before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background: url('uploadfile/2025/0713/20250713130302664.jpg') center/cover no-repeat;
    opacity: 0.05;
    z-index: -1;
}

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

.section-title h2 {
    font-size: 2.8rem;
    color: var(--dark-color);
    margin-bottom: 15px;
    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(--gradient);
    border-radius: 2px;
}

.section-title .en-title {
    color: #777;
    font-size: 1.1rem;
    letter-spacing: 2px;
    margin-top: 20px;
    display: block;
}

.digital-human-frame {
    border-radius: 20px;
    overflow: hidden;
    box-shadow: var(--deep-shadow);
    border: 1px solid rgba(42, 39, 255, 0.1);
    height: 800px;
    transition: all 0.3s ease;
    position: relative;
    z-index: 2;
}

.digital-human-frame:hover {
    box-shadow: var(--hover-shadow);
    transform: translateY(-5px);
}

/* 三维城市区域 */
.digital-city-section {
    padding: 100px 0;
    background: linear-gradient(to bottom, #ffffff, #f0f4ff);
    position: relative;
}

.digital-city-section:before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background: url('uploadfile/2025/0713/20250713130302591.jpg') center/cover no-repeat;
    opacity: 0.05;
    z-index: -1;
}

.digital-city-frame {
    border-radius: 20px;
    overflow: hidden;
    box-shadow: var(--deep-shadow);
    border: 1px solid rgba(42, 39, 255, 0.1);
    height: 800px;
    transition: all 0.3s ease;
    position: relative;
    z-index: 2;
}

.digital-city-frame:hover {
    box-shadow: var(--hover-shadow);
    transform: translateY(-5px);
}

/* 数据展示区域 */
.data-section {
    padding: 100px 0;
    background: var(--light-color);
    position: relative;
}

.data-section:before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background: url('uploadfile/2025/0726/20250726141425308.jpg') center/cover no-repeat;
    opacity: 0.05;
    z-index: -1;
}

.data-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(250px, 1fr));
    gap: 30px;
    margin-top: 60px;
}

.data-item {
    background: white;
    border-radius: 20px;
    padding: 40px 30px;
    text-align: center;
    box-shadow: var(--deep-shadow);
    transition: all 0.3s ease;
    position: relative;
    overflow: hidden;
    z-index: 2;
}

.data-item:before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    width: 5px;
    height: 100%;
    background: var(--gradient);
}

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

.data-number {
    font-size: 3.5rem;
    font-weight: 900;
    font-family: 'Orbitron', sans-serif;
    background: var(--gradient);
    -webkit-background-clip: text;
    background-clip: text;
    color: transparent;
    margin-bottom: 15px;
    display: block;
}

.data-text {
    font-size: 1.2rem;
    color: #555;
    font-weight: 500;
}

/* 展品范围 */
.exhibition-range {
    padding: 100px 0;
    background: white;
    position: relative;
}

.exhibition-range:before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background: url('uploadfile/2025/0713/20250713130302664.jpg') center/cover no-repeat;
    opacity: 0.05;
    z-index: -1;
}

.range-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
    gap: 30px;
    margin-top: 60px;
}

.range-item {
    background: var(--light-color);
    border-radius: 20px;
    overflow: hidden;
    transition: all 0.3s ease;
    box-shadow: var(--deep-shadow);
    position: relative;
    z-index: 2;
}

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

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

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

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

.range-content {
    padding: 25px;
}

.range-content h3 {
    font-size: 1.4rem;
    margin-bottom: 15px;
    color: var(--dark-color);
    position: relative;
    display: inline-block;
}

.range-content h3:after {
    content: '';
    position: absolute;
    bottom: -8px;
    left: 0;
    width: 40px;
    height: 3px;
    background: var(--gradient);
    border-radius: 2px;
}

.range-tags {
    display: flex;
    flex-wrap: wrap;
    gap: 10px;
}

.range-tag {
    background: rgba(42, 39, 255, 0.1);
    color: var(--primary-color);
    padding: 8px 15px;
    border-radius: 20px;
    font-size: 0.9rem;
    transition: all 0.3s;
}

.range-tag:hover {
    background: var(--gradient);
    color: white;
    transform: translateY(-2px);
}

/* 展会亮点 */
.features-section {
    padding: 100px 0;
    background: linear-gradient(to bottom, #f0f4ff, #e6ecff);
    position: relative;
}

.features-section:before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background: url('uploadfile/2025/0713/20250713130302591.jpg') center/cover no-repeat;
    opacity: 0.05;
    z-index: -1;
}

.feature-item {
    display: flex;
    align-items: center;
    gap: 50px;
    margin-bottom: 80px;
    position: relative;
    z-index: 2;
}

.feature-item:nth-child(even) {
    flex-direction: row-reverse;
}

.feature-img {
    flex: 1;
    border-radius: 20px;
    overflow: hidden;
    box-shadow: var(--deep-shadow);
    transition: all 0.3s;
    position: relative;
    overflow: hidden;
}

.feature-img:before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background: var(--gradient);
    opacity: 0;
    transition: opacity 0.3s;
    z-index: 1;
}

.feature-img:hover:before {
    opacity: 0.1;
}

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

.feature-img img {
    width: 100%;
    height: auto;
    display: block;
    transition: transform 0.5s;
}

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

.feature-content {
    flex: 1;
}

.feature-content h3 {
    font-size: 2rem;
    margin-bottom: 20px;
    color: var(--dark-color);
    position: relative;
    display: inline-block;
}

.feature-content h3:after {
    content: '';
    position: absolute;
    bottom: -10px;
    left: 0;
    width: 60px;
    height: 4px;
    background: var(--gradient);
    border-radius: 2px;
}

.feature-content p {
    line-height: 1.8;
    color: #555;
    font-size: 1.1rem;
}

/* 往届展商和展会动态部分 */
.exhibition-info {
    padding: 100px 0;
    background: linear-gradient(to bottom, #ffffff, #f8faff);
    position: relative;
}

.exhibition-info:before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background: url('uploadfile/2025/0726/20250726141425308.jpg') center/cover no-repeat;
    opacity: 0.05;
    z-index: -1;
}

.info-grid {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 40px;
    margin-top: 60px;
}

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

.info-card {
    background: white;
    border-radius: 20px;
    overflow: hidden;
    box-shadow: var(--deep-shadow);
    transition: all 0.3s ease;
    position: relative;
    z-index: 2;
}

.info-card:hover {
    transform: translateY(-10px);
    box-shadow: var(--hover-shadow);
}

.card-header {
    padding: 25px 30px;
    background: var(--gradient);
    color: white;
    display: flex;
    justify-content: space-between;
    align-items: center;
}

.card-header h3 {
    font-size: 1.5rem;
    margin: 0;
}

.card-header .more a {
    color: white;
    text-decoration: none;
    font-size: 1.2rem;
    transition: all 0.3s;
}

.card-header .more a:hover {
    transform: scale(1.2);
}

.card-body {
    padding: 30px;
}

/* 往届展商网格 */
.exhibitors-grid {
    display: grid;
    grid-template-columns: repeat(6, 0.6fr);
    gap: 20px;
}

@media (max-width: 768px) {
    .exhibitors-grid {
        grid-template-columns: repeat(4, 1fr);
    }
}

@media (max-width: 480px) {
    .exhibitors-grid {
        grid-template-columns: repeat(3, 1fr);
    }
}

.exhibitor-item {
    background: var(--light-color);
    border-radius: 15px;
    overflow: hidden;
    transition: all 0.3s;
    position: relative;
}

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

.exhibitor-img {
    height: 80px;
    display: flex;
    align-items: center;
    justify-content: center;
    padding: 15px;
    background: white;
}

.exhibitor-img img {
    max-width: 100%;
    max-height: 100%;
    object-fit: contain;
    transition: transform 0.3s;
}

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

/* 展会动态列表 */
.news-list {
    list-style: none;
}

.news-item {
    padding: 20px 0;
    border-bottom: 1px solid rgba(42, 39, 255, 0.1);
    display: flex;
    gap: 20px;
    transition: all 0.3s;
}

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

.news-item:hover {
    background: rgba(42, 39, 255, 0.03);
    padding-left: 10px;
}

.news-date {
    min-width: 70px;
    text-align: center;
}

.news-date .day {
    font-size: 1.8rem;
    font-weight: bold;
    font-family: 'Orbitron', sans-serif;
    background: var(--gradient);
    -webkit-background-clip: text;
    background-clip: text;
    color: transparent;
    line-height: 1;
}

.news-date .month {
    font-size: 0.9rem;
    color: #777;
}

.news-content {
    flex: 1;
}

.news-title {
    font-size: 1.1rem;
    margin-bottom: 8px;
    font-weight: 500;
}

.news-title a {
    color: var(--dark-color);
    text-decoration: none;
    transition: all 0.3s;
}

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

.news-summary {
    font-size: 0.9rem;
    color: #666;
    line-height: 1.5;
}

/* 联系信息模态框 */
.contact-modal {
    display: none;
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background: rgba(0, 0, 0, 0.7);
    z-index: 2000;
    justify-content: center;
    align-items: center;
    backdrop-filter: blur(5px);
}

.modal-content {
    background: white;
    border-radius: 20px;
    padding: 10px;
    max-width: 500px;
    width: 90%;
    box-shadow: 0 25px 50px rgba(0, 0, 0, 0.3);
    position: relative;
    animation: modalFadeIn 0.5s;
}

@keyframes modalFadeIn {
    from {
        opacity: 0;
        transform: translateY(-50px);
    }
    to {
        opacity: 1;
        transform: translateY(0);
    }
}

.close-modal {
    position: absolute;
    top: 15px;
    right: 20px;
    font-size: 28px;
    cursor: pointer;
    color: #999;
    transition: color 0.3s;
}

.close-modal:hover {
    color: var(--primary-color);
}

.modal-title {
    text-align: center;
    margin-bottom: 10px;
    padding-right: 20px;
    padding-left: 20px;
    color: var(--dark-color);
    font-size: 1.8rem;
}

.contact-info {
    display: grid;
    grid-template-columns: 1fr;
    gap: 20px;
}

.contact-item {
    display: flex;
    align-items: center;
    gap: 5px;
    padding: 5px;
    background: var(--light-color);
    border-radius: 10px;
    transition: all 0.3s;
}

.contact-item:hover {
    transform: translateX(5px);
    box-shadow: var(--card-shadow);
}

.contact-icon {
    width: 50px;
    height: 50px;
    background: var(--gradient);
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    color: white;
    font-size: 20px;
}

.contact-details {
    flex: 1;
}

.contact-details h4 {
    margin-bottom: 5px;
    color: var(--dark-color);
}

.contact-details p {
    color: #555;
}

.qr-code {
    text-align: center;
    margin-top: 20px;
    padding-top: 20px;
    border-top: 1px solid #eee;
}

.qr-code img {
    max-width: 150px;
    margin-bottom: 10px;
    border-radius: 10px;
    box-shadow: 0 5px 15px rgba(0, 0, 0, 0.1);
}

/* 展品范围模态框 */
.range-modal {
    display: none;
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background: rgba(0, 0, 0, 0.7);
    z-index: 2000;
    justify-content: center;
    align-items: center;
    backdrop-filter: blur(5px);
    overflow-y: auto;
    padding: 20px;
}

.range-modal-content {
    background: white;
    border-radius: 20px;
    padding: 40px;
    max-width: 1000px;
    width: 90%;
    box-shadow: 0 25px 50px rgba(0, 0, 0, 0.3);
    position: relative;
    animation: modalFadeIn 0.5s;
    max-height: 90vh;
    overflow-y: auto;
}

.range-modal-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
    gap: 30px;
    margin-top: 30px;
}

/* 页脚 */
.cyber-footer {
    background: var(--dark-color);
    color: white;
    padding: 80px 0 40px;
    position: relative;
    overflow: hidden;
}

.cyber-footer:before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background: url('uploadfile/2025/0726/20250726141425308.jpg') center/cover no-repeat;
    opacity: 0.05;
    z-index: -1;
}

.footer-content {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(250px, 1fr));
    gap: 50px;
    margin-bottom: 50px;
    position: relative;
    z-index: 2;
}

.footer-logo img {
    height: 50px;
    margin-bottom: 20px;
}

.footer-desc {
    line-height: 1.8;
    color: rgba(255, 255, 255, 0.7);
    margin-bottom: 20px;
}

.footer-title {
    font-size: 1.3rem;
    margin-bottom: 25px;
    position: relative;
    padding-bottom: 15px;
    color: white;
}

.footer-title:after {
    content: '';
    position: absolute;
    bottom: 0;
    left: 0;
    width: 40px;
    height: 3px;
    background: var(--gradient);
}

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

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

.footer-links a {
    color: rgba(255, 255, 255, 0.7);
    text-decoration: none;
    transition: color 0.3s ease;
    display: flex;
    align-items: center;
    gap: 12px;
}

.footer-links a:hover {
    color: var(--secondary-color);
}

.footer-links i {
    color: var(--secondary-color);
    width: 20px;
}

.copyright {
    text-align: center;
    padding-top: 40px;
    border-top: 1px solid rgba(255, 255, 255, 0.1);
    color: rgba(255, 255, 255, 0.5);
    position: relative;
    z-index: 2;
}

/* 回到顶部按钮 */
.back-to-top {
    position: fixed;
    bottom: 30px;
    right: 30px;
    width: 50px;
    height: 50px;
    background: var(--gradient);
    color: white;
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    cursor: pointer;
    transition: all 0.3s;
    opacity: 0;
    visibility: hidden;
    z-index: 999;
    box-shadow: 0 5px 15px rgba(42, 39, 255, 0.4);
}

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

.back-to-top:hover {
    transform: translateY(-5px);
    box-shadow: 0 8px 20px rgba(42, 39, 255, 0.6);
}

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

.animate-item {
    opacity: 0;
    transform: translateY(30px);
    transition: all 0.8s ease;
}

.animate-item.active {
    opacity: 1;
    transform: translateY(0);
}

/* 响应式设计 */
@media (max-width: 1200px) {
    .cyber-container {
        padding: 0 15px;
    }
    
    .hero-title {
        font-size: 3rem;
    }
    
    .feature-item, .feature-item:nth-child(even) {
        flex-direction: column;
        gap: 40px;
    }
}

@media (max-width: 992px) {
    .cyber-nav {
        display: none;
        position: absolute;
        top: 100%;
        left: 0;
        width: 100%;
        background: white;
        flex-direction: column;
        padding: 20px;
        box-shadow: 0 10px 20px rgba(0, 0, 0, 0.1);
    }
    
    .cyber-nav.show {
        display: flex;
    }
    
    .mobile-menu-btn {
        display: block;
    }
    
    .two-column {
        grid-template-columns: 1fr;
    }
    
    .hero-title {
        font-size: 2.5rem;
    }
    
    .hero-subtitle {
        font-size: 1.2rem;
    }
}

@media (max-width: 768px) {
    .hero-bg img {
        object-fit: contain !important;
        width: 100% !important;
        height: auto !important;
    }
    .hero-bg {
    background-size: contain;
    background-repeat: no-repeat;
    }

    .hero-content {
    padding: 10px;
    }
    .cyber-btn {
        padding: 5px 10px;
        border-radius: 10px;
    }
    .cyber-hero {
        align-items: flex-start;
        padding-top:5px;
        height: 30vh;
    }
    .hero-title {
        font-size: 2.2rem;
    }
    
    .hero-subtitle {
        font-size: 1.1rem;
    }
    
    .hero-buttons {
        flex-direction: column;
        gap: 15px;
    }
    
    .data-grid {
        grid-template-columns: repeat(2, 1fr);
    }
    
    .range-grid {
        grid-template-columns: 1fr;
    }
    
    .exhibitors-grid {
        grid-template-columns: repeat(2, 1fr);
    }
    
    .section-title h2 {
        font-size: 2.2rem;
    }
    
    /* 移动设备框架高度调整 - 增加20% */
    .digital-human-frame, .digital-city-frame {
        height: 720px; /* 800px + 20% */
    }
}

@media (max-width: 576px) {
    .header-content {
        flex-direction: column;
        gap: 10px;
    }
    .hero-bg img {
        object-fit: contain !important;
        width: 100% !important;
        height: auto !important;
    }
    
    .data-grid {
        grid-template-columns: 1fr;
    }
    
    .exhibitors-grid {
        grid-template-columns: repeat(3, 1fr);
    }
    
    .footer-content {
        grid-template-columns: 1fr;
    }
    
    .hero-title {
        font-size: 2rem;
    }
    
    .countdown-box {
        width: 100%;
    }
    
    /* 移动设备框架高度调整 - 增加20% */
    .digital-human-frame, .digital-city-frame {
        height: 500px; /* 500px + 20% */
    }
    
    .modal-content {
        padding: 15px;
    }
    
    .contact-item {
        flex-direction: column;
        text-align: center;
    }
}

/* 小屏幕手机特定样式 */
@media (max-width: 400px) {
    .digital-human-frame, .digital-city-frame {
        height: 480px; /* 400px + 20% */
    }
    .hero-bg img {
        object-fit: contain !important;
        width: 100% !important;
        height: auto !important;
    }
}
/* 钱学森科技前瞻展示区样式 */
.qian-section {
    position: relative;
    background: linear-gradient(135deg, #0a0a2a 0%, #1a1a3a 50%, #2a2a4a 100%);
    overflow: hidden;
    padding: 100px 0;
}

.qian-section::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background: url('data:image/svg+xml;base64,PHN2ZyB4bWxucz0iaHR0cDovL3d3dy53My5vcmcvMjAwMC9zdmciIHZpZXdCb3g9IjAgMCAxMDAgMTAwIj48cGF0aCBkPSJNMCAwSDEwMFYxMDBIMFoiIGZpbGw9Im5vbmUiLz48cGF0aCBkPSJNMjAgMjBINDBWNDBIMjBaIiBmaWxsPSJyZ2JhKDI1NSwgMjU1LCAyNTUsIDAuMDUpIi8+PHBhdGggZD0iTTYwIDIwSDgwVjQwSDYwWiIgZmlsbD0icmdiYSgyNTUsIDI1NSwgMjU1LCAwLjA1KSIvPjxwYXRoIGQ9Ik00MCA0MEg2MFY2MEg0MFoiIGZpbGw9InJnYmEoMjU1LCAyNTUsIDI1NSwgMC4wNSkiLz48L3N2Zz4=');
    opacity: 0.1;
}

.qian-section .section-title h2 {
    font-size: 3rem;
    background: linear-gradient(45deg, #4facfe, #00f2fe);
    -webkit-background-clip: text;
    background-clip: text;
    color: transparent;
    margin-bottom: 1rem;
    text-align: center;
}

.qian-section .section-title p {
    font-size: 1.2rem;
    color: #a0a0d0;
    text-align: center;
    margin-bottom: 3rem;
}

.qian-content {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(350px, 1fr));
    gap: 2rem;
    position: relative;
    z-index: 2;
}

.qian-card {
    background: rgba(255, 255, 255, 0.05);
    backdrop-filter: blur(10px);
    border-radius: 15px;
    padding: 2rem;
    position: relative;
    overflow: hidden;
    transition: all 0.3s ease;
    border: 1px solid rgba(255, 255, 255, 0.1);
}

.qian-card::before {
    content: '';
    position: absolute;
    top: 0;
    left: -100%;
    width: 100%;
    height: 100%;
    background: linear-gradient(90deg, transparent, rgba(255, 255, 255, 0.1), transparent);
    transition: left 0.5s ease;
}

.qian-card:hover::before {
    left: 100%;
}

.qian-card:hover {
    transform: translateY(-10px);
    box-shadow: 0 15px 30px rgba(0, 0, 0, 0.3);
}

.qian-icon {
    width: 80px;
    height: 80px;
    border-radius: 50%;
    background: linear-gradient(45deg, #4facfe, #00f2fe);
    display: flex;
    align-items: center;
    justify-content: center;
    margin-bottom: 1.5rem;
    position: relative;
    overflow: hidden;
}

.qian-icon::after {
    content: '';
    position: absolute;
    width: 100%;
    height: 100%;
    background: radial-gradient(circle, rgba(255,255,255,0.2) 0%, transparent 70%);
    top: 0;
    left: 0;
}

.qian-icon i {
    font-size: 2rem;
    color: white;
    z-index: 2;
    position: relative;
}

.qian-card h3 {
    font-size: 1.8rem;
    color: white;
    margin-bottom: 1rem;
    position: relative;
}

.qian-card h3::after {
    content: '';
    position: absolute;
    bottom: -5px;
    left: 0;
    width: 50px;
    height: 3px;
    background: linear-gradient(45deg, #4facfe, #00f2fe);
    border-radius: 3px;
}

.qian-card p {
    color: #d0d0f0;
    line-height: 1.6;
    font-size: 1rem;
}

/* 科技背景特效 */
.tech-background {
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    z-index: 1;
    overflow: hidden;
}

.floating-element {
    position: absolute;
    border-radius: 50%;
    background: radial-gradient(circle, rgba(79, 172, 254, 0.2) 0%, transparent 70%);
    animation: float 15s infinite linear;
}

.floating-element:nth-child(1) {
    width: 100px;
    height: 100px;
    top: 10%;
    left: 10%;
    animation-delay: 0s;
}

.floating-element:nth-child(2) {
    width: 150px;
    height: 150px;
    top: 70%;
    left: 80%;
    animation-delay: 5s;
}

.floating-element:nth-child(3) {
    width: 80px;
    height: 80px;
    top: 30%;
    left: 85%;
    animation-delay: 10s;
}

.floating-element:nth-child(4) {
    width: 120px;
    height: 120px;
    top: 80%;
    left: 15%;
    animation-delay: 7s;
}

.data-flow {
    position: absolute;
    width: 100%;
    height: 100%;
    top: 0;
    left: 0;
    overflow: hidden;
}

.data-line {
    position: absolute;
    width: 2px;
    height: 100px;
    background: linear-gradient(to bottom, transparent, #4facfe, transparent);
    animation: dataFlow 8s infinite linear;
}

.data-line:nth-child(1) {
    left: 20%;
    animation-delay: 0s;
}

.data-line:nth-child(2) {
    left: 40%;
    animation-delay: 2s;
}

.data-line:nth-child(3) {
    left: 60%;
    animation-delay: 4s;
}

.data-line:nth-child(4) {
    left: 80%;
    animation-delay: 6s;
}

/* 动画定义 */
@keyframes float {
    0% {
        transform: translateY(0) rotate(0deg);
    }
    25% {
        transform: translateY(-20px) rotate(90deg);
    }
    50% {
        transform: translateY(0) rotate(180deg);
    }
    75% {
        transform: translateY(20px) rotate(270deg);
    }
    100% {
        transform: translateY(0) rotate(360deg);
    }
}

@keyframes dataFlow {
    0% {
        top: -100px;
        opacity: 0;
    }
    10% {
        opacity: 1;
    }
    90% {
        opacity: 1;
    }
    100% {
        top: 100%;
        opacity: 0;
    }
}

/* 响应式设计 */
@media (max-width: 768px) {
    .qian-content {
        grid-template-columns: 1fr;
    }
    
    .qian-section .section-title h2 {
        font-size: 2.2rem;
    }
    
    .qian-card {
        padding: 1.5rem;
    }
}

/* 历史区块样式 */
.history-section {
    position: relative;
    padding: 80px 0;
    background: linear-gradient(135deg, #0a0a2a 0%, #1a1a4a 100%);
    overflow: hidden;
}

.history-background {
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    z-index: 1;
}

.history-particle {
    position: absolute;
    border-radius: 50%;
    background: rgba(64, 224, 208, 0.1);
    animation: float 15s infinite linear;
}

.history-particle:nth-child(1) {
    width: 120px;
    height: 120px;
    top: 10%;
    left: 5%;
    animation-delay: 0s;
}

.history-particle:nth-child(2) {
    width: 80px;
    height: 80px;
    top: 70%;
    left: 10%;
    animation-delay: 3s;
}

.history-particle:nth-child(3) {
    width: 60px;
    height: 60px;
    top: 30%;
    left: 85%;
    animation-delay: 6s;
}

.history-particle:nth-child(4) {
    width: 100px;
    height: 100px;
    top: 80%;
    left: 80%;
    animation-delay: 9s;
}

.history-particle:nth-child(5) {
    width: 40px;
    height: 40px;
    top: 50%;
    left: 15%;
    animation-delay: 12s;
}

.history-glow {
    position: absolute;
    width: 300px;
    height: 300px;
    border-radius: 50%;
    background: radial-gradient(circle, rgba(64, 224, 208, 0.2) 0%, rgba(64, 224, 208, 0) 70%);
    top: -150px;
    right: -150px;
    animation: pulse 8s infinite alternate;
}

.timeline-glow {
    position: absolute;
    width: 100%;
    height: 2px;
    background: linear-gradient(90deg, transparent 0%, rgba(64, 224, 208, 0.5) 50%, transparent 100%);
    top: 50%;
    left: 0;
    transform: translateY(-50%);
    filter: blur(1px);
}

@keyframes float {
    0%, 100% {
        transform: translateY(0) rotate(0deg);
    }
    25% {
        transform: translateY(-20px) rotate(90deg);
    }
    50% {
        transform: translateY(0) rotate(180deg);
    }
    75% {
        transform: translateY(20px) rotate(270deg);
    }
}

@keyframes pulse {
    0% {
        opacity: 0.3;
        transform: scale(1);
    }
    100% {
        opacity: 0.6;
        transform: scale(1.1);
    }
}

.history-section .section-title {
    position: relative;
    z-index: 3;
    text-align: center;
    margin-bottom: 60px;
}

.history-section .section-title h2 {
    font-size: 2.5rem;
    color: #fff;
    margin-bottom: 15px;
    font-weight: 700;
    text-shadow: 0 0 10px rgba(64, 224, 208, 0.5);
}

.history-section .section-title p {
    font-size: 1.2rem;
    color: #a0a0e0;
    margin-bottom: 30px;
}

.title-decoration {
    display: flex;
    align-items: center;
    justify-content: center;
    margin-top: 20px;
}

.decoration-line {
    width: 80px;
    height: 2px;
    background: linear-gradient(90deg, transparent, #40e0d0, transparent);
}

.decoration-dot {
    width: 8px;
    height: 8px;
    border-radius: 50%;
    background: #40e0d0;
    margin: 0 15px;
    box-shadow: 0 0 10px #40e0d0;
}

/* 历史时间线 */
.history-tree {
    position: relative;
    z-index: 2;
    max-width: 1200px;
    margin: 0 auto;
    padding: 40px 0;
}

.tree-line {
    position: absolute;
    top: 0;
    left: 50%;
    width: 4px;
    height: 100%;
    background: linear-gradient(to bottom, transparent 0%, #40e0d0 10%, #40e0d0 90%, transparent 100%);
    transform: translateX(-50%);
    z-index: 1;
}

.tree-node {
    position: relative;
    display: flex;
    align-items: center;
    margin-bottom: 80px;
    opacity: 0;
    transform: translateY(30px);
    transition: all 0.8s ease;
}

.tree-node.active {
    opacity: 1;
    transform: translateY(0);
}

.tree-node:nth-child(odd) {
    flex-direction: row-reverse;
}

.tree-node-point {
    position: absolute;
    left: 50%;
    transform: translateX(-50%);
    width: 24px;
    height: 24px;
    border-radius: 50%;
    background: #0a0a2a;
    border: 3px solid #40e0d0;
    z-index: 3;
    display: flex;
    align-items: center;
    justify-content: center;
}

.point-glow {
    width: 8px;
    height: 8px;
    border-radius: 50%;
    background: #40e0d0;
    box-shadow: 0 0 10px #40e0d0;
}

.tree-node.current .tree-node-point {
    width: 32px;
    height: 32px;
    border-width: 4px;
    animation: pulse 2s infinite;
}

.point-pulse {
    position: absolute;
    width: 100%;
    height: 100%;
    border-radius: 50%;
    border: 2px solid #40e0d0;
    animation: ripple 2s infinite;
}

@keyframes ripple {
    0% {
        transform: scale(1);
        opacity: 1;
    }
    100% {
        transform: scale(2);
        opacity: 0;
    }
}

.tree-node-content {
    width: 45%;
    background: rgba(16, 16, 48, 0.8);
    border-radius: 12px;
    padding: 25px;
    box-shadow: 0 10px 30px rgba(0, 0, 0, 0.3);
    border: 1px solid rgba(64, 224, 208, 0.2);
    position: relative;
    backdrop-filter: blur(10px);
    transition: all 0.3s ease;
}

.tree-node-content:hover {
    transform: translateY(-5px);
    box-shadow: 0 15px 40px rgba(0, 0, 0, 0.4);
    border-color: rgba(64, 224, 208, 0.5);
}

.tree-node:nth-child(odd) .tree-node-content {
    margin-left: auto;
}

.tree-node:nth-child(even) .tree-node-content {
    margin-right: auto;
}

.node-year {
    position: absolute;
    top: -20px;
    left: 50%;
    transform: translateX(-50%);
    background: #40e0d0;
    color: #0a0a2a;
    padding: 5px 15px;
    border-radius: 20px;
    font-weight: 700;
    font-size: 1.1rem;
    box-shadow: 0 5px 15px rgba(64, 224, 208, 0.3);
    z-index: 2;
}

.tree-node.current .node-year {
    background: #ff6b6b;
    color: white;
    box-shadow: 0 5px 15px rgba(255, 107, 107, 0.4);
}

.node-decoration {
    position: absolute;
    top: 10px;
    right: 10px;
}

.node-circle {
    width: 12px;
    height: 12px;
    border-radius: 50%;
    background: #40e0d0;
    opacity: 0.7;
}

.node-sparkle {
    position: absolute;
    top: -5px;
    right: -5px;
    width: 8px;
    height: 8px;
    border-radius: 50%;
    background: white;
    animation: sparkle 2s infinite;
}

@keyframes sparkle {
    0%, 100% {
        opacity: 0;
        transform: scale(0.5);
    }
    50% {
        opacity: 1;
        transform: scale(1);
    }
}

.node-title {
    font-size: 1.4rem;
    color: #40e0d0;
    margin-bottom: 15px;
    font-weight: 600;
}

.tree-node.current .node-title {
    color: #ff6b6b;
    text-shadow: 0 0 10px rgba(255, 107, 107, 0.3);
}

.node-description {
    color: #c0c0e0;
    line-height: 1.6;
    margin-bottom: 15px;
}

.node-highlight {
    display: inline-block;
    background: rgba(64, 224, 208, 0.1);
    color: #40e0d0;
    padding: 5px 10px;
    border-radius: 5px;
    font-size: 0.9rem;
    border-left: 3px solid #40e0d0;
}

.tree-node.current .node-highlight.special {
    background: rgba(255, 107, 107, 0.1);
    color: #ff6b6b;
    border-left-color: #ff6b6b;
}

.node-badge {
    position: absolute;
    bottom: -10px;
    right: 20px;
    background: #ff6b6b;
    color: white;
    padding: 3px 10px;
    border-radius: 15px;
    font-size: 0.8rem;
    font-weight: 600;
}

/* 历史统计数据 */
.history-stats {
    display: flex;
    justify-content: space-around;
    margin-top: 60px;
    flex-wrap: wrap;
}

.stat-item {
    text-align: center;
    margin: 15px;
    opacity: 0;
    transform: translateY(20px);
    animation: fadeInUp 0.8s forwards;
}

.stat-item:nth-child(1) { animation-delay: 0.2s; }
.stat-item:nth-child(2) { animation-delay: 0.4s; }
.stat-item:nth-child(3) { animation-delay: 0.6s; }
.stat-item:nth-child(4) { animation-delay: 0.8s; }

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

.stat-number {
    font-size: 3rem;
    font-weight: 700;
    color: #40e0d0;
    margin-bottom: 5px;
    text-shadow: 0 0 10px rgba(64, 224, 208, 0.3);
}

.stat-label {
    font-size: 1rem;
    color: #a0a0e0;
}

/* 响应式设计 */
@media (max-width: 992px) {
    .tree-line {
        left: 30px;
    }
    
    .tree-node {
        flex-direction: row !important;
        margin-bottom: 60px;
    }
    
    .tree-node-point {
        left: 30px;
    }
    
    .tree-node-content {
        width: calc(100% - 80px);
        margin-left: 80px !important;
        margin-right: 0 !important;
    }
    
    .node-year {
        left: -70px;
        transform: none;
    }
}

@media (max-width: 768px) {
    .history-section {
        padding: 60px 0;
    }
    
    .history-section .section-title h2 {
        font-size: 2rem;
    }
    
    .history-section .section-title p {
        font-size: 1rem;
    }
    
    .tree-node-content {
        padding: 20px;
    }
    
    .node-title {
        font-size: 1.2rem;
    }
    
    .stat-number {
        font-size: 2.5rem;
    }
    
    .history-stats {
        margin-top: 40px;
    }
}

@media (max-width: 576px) {
    .tree-node-content {
        width: calc(100% - 60px);
        margin-left: 60px !important;
    }
    
    .tree-node-point {
        width: 20px;
        height: 20px;
        left: 20px;
    }
    
    .tree-node.current .tree-node-point {
        width: 26px;
        height: 26px;
    }
    
    .node-year {
        left: -50px;
        font-size: 1rem;
        padding: 3px 10px;
    }
    
    .stat-number {
        font-size: 2rem;
    }
    
    .history-stats {
        flex-direction: column;
        align-items: center;
    }
    
    .stat-item {
        margin: 10px 0;
    }
}

/* 添加滚动动画 */
.history-section .tree-node {
    opacity: 0;
    transform: translateY(30px);
    transition: all 0.8s ease;
}

.history-section .tree-node.in-view {
    opacity: 1;
    transform: translateY(0);
}