/* 全局样式重置 */
* {
    margin: 0;
    padding: 0;
    box-sizing: border-box;
}

html {
    scroll-behavior: smooth;
    scroll-padding-top: 80px;
}

body {
    font-family: 'Microsoft YaHei', 'PingFang SC', 'Helvetica Neue', Arial, sans-serif;
    overflow-x: hidden;
    background-color: #000;
}

/* 背景视频样式 */
.video-background {
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    z-index: -2;
    overflow: hidden;
    will-change: transform;
    transform: translateZ(0);
}

.video-background video {
    min-width: 100%;
    min-height: 100%;
    width: auto;
    height: auto;
    position: absolute;
    top: 50%;
    left: 50%;
    transform: translate(-50%, -50%);
    object-fit: cover;
}

.video-overlay {
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background: linear-gradient(135deg, rgba(0, 0, 0, 0.7) 0%, rgba(0, 0, 0, 0.5) 50%, rgba(0, 0, 0, 0.8) 100%);
    z-index: -1;
}

/* 导航栏样式 */
.navbar {
    background: rgba(0, 0, 0, 0.3);
    backdrop-filter: blur(10px);
    border-bottom: 1px solid rgba(255, 255, 255, 0.1);
    padding: 1rem 0;
    transition: all 0.3s ease;
}

.navbar-brand {
    font-weight: bold;
    font-size: 1.5rem;
    text-decoration: none;
    color: white !important;
}

.logo-container {
    width: 60px;
    height: 60px;
    display: flex;
    align-items: center;
    justify-content: center;
    background: white;
    border-radius: 8px;
    margin-right: 0.75rem;
    box-shadow: 0 2px 8px rgba(0, 0, 0, 0.1);
}

.logo {
    width: 50px;
    height: 50px;
    object-fit: contain;
}

.company-name {
    font-size: 1.5rem;
    font-weight: bold;
    color: white;
    letter-spacing: 1px;
}

.navbar-nav .nav-link {
    color: white !important;
    font-weight: 500;
    margin: 0 0.5rem;
    padding: 0.5rem 1rem !important;
    border-radius: 5px;
    transition: all 0.3s ease;
    position: relative;
}

.navbar-nav .nav-link:hover {
    background: rgba(255, 255, 255, 0.1);
    color: #FFB400 !important;
}

.navbar-nav .nav-link::after {
    content: '';
    position: absolute;
    bottom: 0;
    left: 50%;
    width: 0;
    height: 2px;
    background: #FFB400;
    transition: all 0.3s ease;
    transform: translateX(-50%);
}

.navbar-nav .nav-link:hover::after {
    width: 80%;
}

/* 主要内容样式 */
.main-content {
    position: relative;
    z-index: 1;
    min-height: 50vh;
    display: flex;
    align-items: center;
    justify-content: center;
    padding-top: 80px;
    text-align: center;
}

.welcome-title {
    font-size: 2.5rem;
    font-weight: bold;
    color: white;
    margin-bottom: 1.5rem;
    text-shadow: 2px 2px 4px rgba(0, 0, 0, 0.5);
    animation: fadeInUp 1s ease-out;
}

.company-description {
    font-size: 1rem;
    color: white;
    line-height: 1.6;
    max-width: 600px;
    margin: 0 auto 2rem;
    text-shadow: 1px 1px 2px rgba(0, 0, 0, 0.5);
    animation: fadeInUp 1s ease-out 0.3s both;
}

/* 下载按钮样式 */
.btn-download {
    background: linear-gradient(135deg, #FFB400 0%, #FF8C00 100%);
    color: white;
    border: none;
    padding: 0.8rem 2rem;
    font-size: 1rem;
    font-weight: bold;
    border-radius: 50px;
    transition: all 0.3s ease;
    box-shadow: 0 4px 15px rgba(255, 180, 0, 0.3);
    animation: fadeInUp 1s ease-out 0.6s both;
    position: relative;
    overflow: hidden;
}

.btn-download::before {
    content: '';
    position: absolute;
    top: 0;
    left: -100%;
    width: 100%;
    height: 100%;
    background: linear-gradient(90deg, transparent, rgba(255, 255, 255, 0.2), transparent);
    transition: left 0.5s;
}

.btn-download:hover::before {
    left: 100%;
}

.btn-download:hover {
    transform: translateY(-2px);
    box-shadow: 0 6px 20px rgba(255, 180, 0, 0.4);
    background: linear-gradient(135deg, #FFC107 0%, #FF9500 100%);
}

.btn-download:active {
    transform: translateY(0);
}

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

/* Professional Investment Services Section */
.investment-services-section {
    position: relative;
    background: linear-gradient(135deg, rgba(0, 0, 0, 0.7) 0%, rgba(0, 0, 0, 0.5) 50%, rgba(0, 0, 0, 0.8) 100%), 
                url('image/323653_337389.png');
    background-size: cover;
    background-position: center;
    background-repeat: no-repeat;
    background-attachment: fixed;
    padding: 120px 0 100px 0;
    overflow: hidden;
}

.investment-services-section::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background: 
        radial-gradient(circle at 20% 30%, rgba(0, 191, 255, 0.05) 0%, transparent 50%),
        radial-gradient(circle at 80% 70%, rgba(255, 180, 0, 0.03) 0%, transparent 50%);
    z-index: 1;
}

.image-container {
    position: relative;
    z-index: 2;
    text-align: center;
}

.service-image {
    max-width: 100%;
    height: auto;
    border-radius: 15px;
    box-shadow: 0 20px 40px rgba(0, 0, 0, 0.3);
    transition: transform 0.3s ease;
}

.service-image:hover {
    transform: scale(1.02);
}

.service-content {
    position: relative;
    z-index: 2;
    padding: 40px 20px;
}

.service-title {
    font-size: 2.5rem;
    font-weight: bold;
    color: #ffffff;
    margin-bottom: 20px;
    text-shadow: 0 0 20px rgba(0, 191, 255, 0.5);
    background: linear-gradient(135deg, #00bfff 0%, #ffffff 100%);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
}

.service-description {
    font-size: 1.2rem;
    color: #cccccc;
    line-height: 1.8;
    text-shadow: 1px 1px 2px rgba(0, 0, 0, 0.5);
}

/* 响应式设计 */
@media (max-width: 992px) {
    .investment-services-section {
        padding: 60px 0;
    }
    
    .service-title {
        font-size: 2rem;
    }
    
    .service-description {
        font-size: 1.1rem;
    }
    
    .service-content {
        padding: 20px;
        text-align: center;
    }
}

/* Advanced Features Section */
.advanced-features-section {
    position: relative;
    background: linear-gradient(135deg, rgba(0, 0, 0, 0.7) 0%, rgba(0, 0, 0, 0.5) 50%, rgba(0, 0, 0, 0.8) 100%), 
                url('image/692606_452723.jpg');
    background-size: cover;
    background-position: center;
    background-repeat: no-repeat;
    background-attachment: fixed;
    padding: 120px 0 100px 0;
    overflow: hidden;
}

.advanced-features-section::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background: 
        radial-gradient(circle at 20% 20%, rgba(0, 191, 255, 0.05) 0%, transparent 50%),
        radial-gradient(circle at 80% 80%, rgba(0, 191, 255, 0.03) 0%, transparent 50%),
        radial-gradient(circle at 50% 50%, rgba(0, 191, 255, 0.02) 0%, transparent 70%);
    z-index: 1;
}

.advanced-features-section::after {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background-image: 
        linear-gradient(45deg, rgba(0, 191, 255, 0.1) 1px, transparent 1px),
        linear-gradient(-45deg, rgba(0, 191, 255, 0.1) 1px, transparent 1px);
    background-size: 60px 60px;
    background-position: 0 0, 30px 30px;
    animation: gridMove 20s linear infinite;
    z-index: 1;
}

/* Floating Dots Animation */
.advanced-features-section .floating-dots {
    position: absolute;
    width: 100%;
    height: 100%;
    z-index: 1;
}

.advanced-features-section .dot {
    position: absolute;
    width: 6px;
    height: 6px;
    background: #00bfff;
    border-radius: 50%;
    box-shadow: 0 0 10px #00bfff;
    animation: floatDots 8s ease-in-out infinite;
}

.advanced-features-section .dot:nth-child(1) {
    top: 20%;
    left: 10%;
    animation-delay: 0s;
}

.advanced-features-section .dot:nth-child(2) {
    top: 60%;
    left: 85%;
    animation-delay: 2s;
}

.advanced-features-section .dot:nth-child(3) {
    top: 80%;
    left: 20%;
    animation-delay: 4s;
}

.advanced-features-section .dot:nth-child(4) {
    top: 30%;
    left: 70%;
    animation-delay: 6s;
}

/* Section Main Title */
.advanced-features-section .section-main-title {
    font-size: 3rem;
    font-weight: bold;
    color: #ffffff;
    margin-bottom: 20px;
    text-shadow: 0 0 30px rgba(0, 191, 255, 0.6);
    background: linear-gradient(135deg, #00bfff 0%, #ffffff 100%);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
}

.advanced-features-section .section-main-description {
    font-size: 1.3rem;
    color: #cccccc;
    line-height: 1.8;
    text-shadow: 1px 1px 2px rgba(0, 0, 0, 0.5);
    max-width: 600px;
    margin: 0 auto;
}

/* Content Styling for Advanced Features */
.advanced-features-section .service-content {
    position: relative;
    z-index: 2;
    padding: 40px 20px;
}

.advanced-features-section .service-title {
    font-size: 2.5rem;
    font-weight: bold;
    color: #ffffff;
    margin-bottom: 20px;
    text-shadow: 0 0 20px rgba(0, 191, 255, 0.5);
    background: linear-gradient(135deg, #00bfff 0%, #ffffff 100%);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
}

.advanced-features-section .service-description {
    font-size: 1.2rem;
    color: #cccccc;
    line-height: 1.8;
    text-shadow: 1px 1px 2px rgba(0, 0, 0, 0.5);
}

.advanced-features-section .image-container {
    position: relative;
    z-index: 2;
    text-align: center;
}

.advanced-features-section .service-image {
    max-width: 100%;
    height: auto;
    border-radius: 15px;
    box-shadow: 0 20px 40px rgba(0, 0, 0, 0.3);
    transition: transform 0.3s ease;
}

.advanced-features-section .service-image:hover {
    transform: scale(1.02);
}

/* Animations */
@keyframes gridMove {
    0% { transform: translate(0, 0); }
    100% { transform: translate(60px, 60px); }
}

@keyframes floatDots {
    0%, 100% { 
        opacity: 0.6; 
        transform: translateY(0px) scale(1); 
    }
    50% { 
        opacity: 1; 
        transform: translateY(-20px) scale(1.2); 
    }
}

/* Advanced Features Responsive */
@media (max-width: 992px) {
    .advanced-features-section {
        padding: 60px 0;
    }
    
    .advanced-features-section .section-main-title {
        font-size: 2.5rem;
    }
    
    .advanced-features-section .section-main-description {
        font-size: 1.2rem;
    }
    
    .advanced-features-section .service-title {
        font-size: 2rem;
    }
    
    .advanced-features-section .service-description {
        font-size: 1.1rem;
    }
    
    .advanced-features-section .service-content {
        padding: 20px;
        text-align: center;
    }
    
    .advanced-features-section::after {
        background-size: 40px 40px;
        background-position: 0 0, 20px 20px;
    }
}

/* Platform Features Section */
.platform-features-section {
    position: relative;
    background: linear-gradient(135deg, rgba(0, 0, 0, 0.6) 0%, rgba(0, 0, 0, 0.4) 50%, rgba(0, 0, 0, 0.7) 100%), 
                url('image/174176_846790.png');
    background-size: cover;
    background-position: center;
    background-repeat: no-repeat;
    background-attachment: fixed;
    padding: 120px 0 100px 0;
    overflow: hidden;
}

.platform-features-section::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background: 
        radial-gradient(circle at 20% 30%, rgba(0, 191, 255, 0.08) 0%, transparent 50%),
        radial-gradient(circle at 80% 70%, rgba(0, 191, 255, 0.05) 0%, transparent 50%),
        radial-gradient(circle at 50% 50%, rgba(0, 191, 255, 0.03) 0%, transparent 70%);
    z-index: 1;
}

.platform-features-section::after {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background-image: 
        linear-gradient(45deg, rgba(0, 191, 255, 0.05) 1px, transparent 1px),
        linear-gradient(-45deg, rgba(0, 191, 255, 0.05) 1px, transparent 1px);
    background-size: 60px 60px;
    background-position: 0 0, 30px 30px;
    animation: gridMove 20s linear infinite;
    z-index: 1;
}

/* Platform Section Titles */
.platform-main-title {
    position: relative;
    z-index: 2;
    font-size: 3rem;
    font-weight: bold;
    color: #ffffff;
    margin-bottom: 20px;
    text-shadow: 0 0 30px rgba(0, 191, 255, 0.6);
    background: linear-gradient(135deg, #00bfff 0%, #ffffff 100%);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
}

.platform-subtitle {
    position: relative;
    z-index: 2;
    font-size: 1.3rem;
    color: #cccccc;
    line-height: 1.8;
    text-shadow: 1px 1px 2px rgba(0, 0, 0, 0.5);
    max-width: 600px;
    margin: 0 auto;
}

/* Platform Feature Cards */
.platform-feature-card {
    position: relative;
    z-index: 2;
    background: rgba(0, 0, 0, 0.4);
    border-radius: 20px;
    padding: 30px 20px;
    text-align: center;
    backdrop-filter: blur(15px);
    border: 1px solid rgba(0, 191, 255, 0.3);
    transition: all 0.4s ease;
    height: 100%;
    overflow: hidden;
}

.platform-feature-card::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background: linear-gradient(45deg, transparent 30%, rgba(0, 191, 255, 0.05) 50%, transparent 70%);
    animation: shimmer 4s ease-in-out infinite;
}

.platform-feature-card:hover {
    background: rgba(0, 0, 0, 0.6);
    transform: translateY(-10px);
    box-shadow: 0 20px 40px rgba(0, 191, 255, 0.4);
    border-color: rgba(0, 191, 255, 0.6);
}

/* Feature Visual Elements */
.feature-visual {
    height: 200px;
    margin-bottom: 25px;
    position: relative;
    display: flex;
    align-items: center;
    justify-content: center;
    overflow: hidden;
    border-radius: 15px;
}

.feature-image {
    width: 100%;
    height: 100%;
    object-fit: cover;
    object-position: center;
    border-radius: 15px;
    transition: transform 0.3s ease;
    box-shadow: 0 10px 25px rgba(0, 0, 0, 0.3);
}

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

/* Feature Content */
.feature-content {
    position: relative;
    z-index: 3;
}

.feature-title {
    color: #ffffff;
    font-size: 1.4rem;
    font-weight: bold;
    margin-bottom: 15px;
    text-shadow: 0 0 15px rgba(0, 191, 255, 0.6);
}

.feature-description {
    color: #cccccc;
    font-size: 1rem;
    line-height: 1.6;
    margin: 0;
    text-shadow: 1px 1px 2px rgba(0, 0, 0, 0.5);
}

/* Platform Features Animations */
@keyframes touchPulse {
    0%, 100% { 
        opacity: 0.8; 
        transform: scale(1); 
    }
    50% { 
        opacity: 1; 
        transform: scale(1.1); 
    }
}

@keyframes globeRotate {
    0% { transform: translate(-50%, -50%) rotate(0deg); }
    100% { transform: translate(-50%, -50%) rotate(360deg); }
}

@keyframes connectionPulse {
    0%, 100% { opacity: 0.4; }
    50% { opacity: 0.8; }
}

@keyframes globalPulse {
    0%, 100% { 
        opacity: 0.6; 
        transform: scale(1); 
    }
    50% { 
        opacity: 1; 
        transform: scale(1.2); 
    }
}

@keyframes ringPulse {
    0%, 100% { 
        opacity: 0.3; 
        transform: translate(-50%, -50%) scale(1); 
    }
    50% { 
        opacity: 0.6; 
        transform: translate(-50%, -50%) scale(1.1); 
    }
}

/* Platform Features Section Responsive */
@media (max-width: 992px) {
    .platform-features-section {
        padding: 60px 0;
    }
    
    .platform-main-title {
        font-size: 2.5rem;
    }
    
    .platform-subtitle {
        font-size: 1.2rem;
    }
    
    .platform-feature-card {
        padding: 25px 15px;
        margin-bottom: 20px;
    }
    
    .feature-visual {
        height: 150px;
    }
    
    .screen-container {
        width: 100px;
        height: 70px;
    }
    
    .office-scene {
        width: 120px;
        height: 100px;
    }
    
    .holographic-globe {
        width: 100px;
        height: 100px;
    }
    
    .globe-core {
        width: 50px;
        height: 50px;
    }
    
    .feature-title {
        font-size: 1.2rem;
    }
}

@media (max-width: 768px) {
    .platform-main-title {
        font-size: 2rem;
    }
    
    .platform-subtitle {
        font-size: 1.1rem;
    }
    
    .platform-feature-card {
        padding: 20px 15px;
    }
    
    .feature-visual {
        height: 120px;
    }
    
    .screen-container {
        width: 80px;
        height: 60px;
    }
    
    .office-scene {
        width: 100px;
        height: 80px;
    }
    
    .holographic-globe {
        width: 80px;
        height: 80px;
    }
    
    .globe-core {
        width: 40px;
        height: 40px;
    }
    
    .feature-title {
        font-size: 1.1rem;
    }
    
    .feature-description {
        font-size: 0.9rem;
    }
}

/* Core Advantages Section */
.core-advantages-section {
    position: relative;
    background: linear-gradient(135deg, #1a1a2e 0%, #16213e 50%, #0f1419 100%);
    padding: 120px 0 100px 0;
    overflow: hidden;
}

.core-advantages-section::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background: 
        radial-gradient(circle at 25% 25%, rgba(0, 191, 255, 0.05) 0%, transparent 50%),
        radial-gradient(circle at 75% 75%, rgba(255, 180, 0, 0.03) 0%, transparent 50%);
    z-index: 1;
}

/* Advantages Section Titles */
.advantages-main-title {
    position: relative;
    z-index: 2;
    font-size: 3rem;
    font-weight: bold;
    color: #ffffff;
    margin-bottom: 20px;
    text-shadow: 0 0 30px rgba(0, 191, 255, 0.6);
    background: linear-gradient(135deg, #00bfff 0%, #ffffff 100%);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
}

.advantages-subtitle {
    position: relative;
    z-index: 2;
    font-size: 1.3rem;
    color: #cccccc;
    line-height: 1.8;
    text-shadow: 1px 1px 2px rgba(0, 0, 0, 0.5);
    max-width: 600px;
    margin: 0 auto;
}

/* Advantage Content Layout */
.advantage-image-container {
    position: relative;
    z-index: 2;
    text-align: center;
    margin-bottom: 30px;
}

.advantage-image {
    max-width: 70%;
    height: auto;
    border-radius: 20px;
    box-shadow: 0 20px 40px rgba(0, 0, 0, 0.4);
    transition: transform 0.3s ease;
}

.advantage-image:hover {
    transform: scale(1.02);
}

.advantage-content {
    position: relative;
    z-index: 2;
    padding: 40px 20px;
}

.advantage-title {
    font-size: 2.5rem;
    font-weight: bold;
    color: #ffffff;
    margin-bottom: 20px;
    text-shadow: 0 0 20px rgba(0, 191, 255, 0.5);
    background: linear-gradient(135deg, #00bfff 0%, #ffffff 100%);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
}

.advantage-description {
    font-size: 1.2rem;
    color: #cccccc;
    line-height: 1.8;
    text-shadow: 1px 1px 2px rgba(0, 0, 0, 0.5);
}

/* Core Advantages Section Responsive */
@media (max-width: 992px) {
    .core-advantages-section {
        padding: 60px 0;
    }
    
    .advantages-main-title {
        font-size: 2.5rem;
    }
    
    .advantages-subtitle {
        font-size: 1.2rem;
    }
    
    .advantage-title {
        font-size: 2rem;
    }
    
    .advantage-description {
        font-size: 1.1rem;
    }
    
    .advantage-content {
        padding: 20px;
        text-align: center;
    }
    
    .advantage-image {
        max-width: 80%;
    }
}

@media (max-width: 768px) {
    .advantages-main-title {
        font-size: 2rem;
    }
    
    .advantages-subtitle {
        font-size: 1.1rem;
    }
    
    .advantage-title {
        font-size: 1.8rem;
    }
    
    .advantage-description {
        font-size: 1rem;
    }
    
    .advantage-content {
        padding: 15px;
    }
    
    .advantage-image {
        max-width: 85%;
    }
}

/* Contact Section */
.contact-section {
    background: #f5f5f5;
    padding: 120px 0 80px 0;
    position: relative;
}

.contact-main-title {
    font-size: 2.5rem;
    font-weight: bold;
    color: #333;
    margin-bottom: 40px;
    text-align: left;
}

/* Contact Information */
.contact-info {
    padding: 20px 0;
}

.contact-item {
    margin-bottom: 30px;
}

.contact-label {
    font-size: 1.2rem;
    font-weight: bold;
    color: #333;
    margin-bottom: 8px;
}

.contact-detail {
    font-size: 1.1rem;
    color: #555;
    margin: 0;
    line-height: 1.6;
}

/* Contact Form */
.contact-form-container {
    background: #fff;
    padding: 40px;
    border-radius: 10px;
    box-shadow: 0 5px 15px rgba(0, 0, 0, 0.1);
}

.contact-form {
    width: 100%;
}

.form-group {
    margin-bottom: 25px;
}

.form-label {
    display: block;
    font-size: 1rem;
    font-weight: 500;
    color: #333;
    margin-bottom: 8px;
}

.form-input,
.form-textarea {
    width: 100%;
    padding: 12px 15px;
    border: 1px solid #ddd;
    border-radius: 5px;
    font-size: 1rem;
    color: #333;
    background: #fff;
    transition: border-color 0.3s ease;
}

.form-input:focus,
.form-textarea:focus {
    outline: none;
    border-color: #00bfff;
    box-shadow: 0 0 0 2px rgba(0, 191, 255, 0.1);
}

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

.submit-btn {
    background: linear-gradient(135deg, #FF8C00 0%, #FF6B35 100%);
    color: white;
    border: none;
    padding: 12px 30px;
    font-size: 1.1rem;
    font-weight: bold;
    border-radius: 5px;
    cursor: pointer;
    transition: all 0.3s ease;
    float: right;
}

.submit-btn:hover {
    background: linear-gradient(135deg, #FF6B35 0%, #FF8C00 100%);
    transform: translateY(-2px);
    box-shadow: 0 5px 15px rgba(255, 107, 53, 0.3);
}

.submit-btn:active {
    transform: translateY(0);
}

/* Footer */
.footer {
    background: #333;
    padding: 30px 0;
    text-align: center;
}

.footer-text {
    color: #fff;
    font-size: 1rem;
    margin: 0;
}

/* Contact Section Responsive */
@media (max-width: 992px) {
    .contact-section {
        padding: 60px 0;
    }
    
    .contact-main-title {
        font-size: 2rem;
        text-align: center;
        margin-bottom: 30px;
    }
    
    .contact-form-container {
        padding: 30px 20px;
        margin-top: 30px;
    }
}

@media (max-width: 768px) {
    .contact-main-title {
        font-size: 1.8rem;
    }
    
    .contact-form-container {
        padding: 25px 15px;
    }
    
    .form-input,
    .form-textarea {
        padding: 10px 12px;
    }
    
    .submit-btn {
        width: 100%;
        float: none;
        margin-top: 10px;
    }


    .welcome-title {
        font-size: 2.5rem;
    }
    
    .company-description {
        font-size: 1.1rem;
        padding: 0 1rem;
    }
    
    .navbar-nav {
        background: rgba(0, 0, 0, 0.8);
        border-radius: 10px;
        padding: 1rem;
        margin-top: 1rem;
    }
}

@media (max-width: 768px) {
    .welcome-title {
        font-size: 2rem;
        margin-bottom: 1.5rem;
    }
    
    .company-description {
        font-size: 1rem;
        margin-bottom: 2rem;
    }
    
    .btn-download {
        padding: 0.8rem 2rem;
        font-size: 1rem;
    }
    
    .navbar-brand {
        font-size: 1.3rem;
    }
    
    .logo-container {
        width: 50px;
        height: 50px;
    }
    
    .logo {
        width: 40px;
        height: 40px;
    }
}

@media (max-width: 576px) {
    .welcome-title {
        font-size: 1.8rem;
    }
    
    .company-description {
        font-size: 0.95rem;
        line-height: 1.6;
    }
    
    .main-content {
        padding-top: 60px;
    }
}

/* 滚动条样式 */
::-webkit-scrollbar {
    width: 8px;
}

::-webkit-scrollbar-track {
    background: rgba(0, 0, 0, 0.1);
}

::-webkit-scrollbar-thumb {
    background: rgba(255, 180, 0, 0.6);
    border-radius: 4px;
}

::-webkit-scrollbar-thumb:hover {
    background: rgba(255, 180, 0, 0.8);
}

/* 加载动画 */
.loading {
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background: #000;
    display: flex;
    justify-content: center;
    align-items: center;
    z-index: 9999;
}

.loading-spinner {
    width: 50px;
    height: 50px;
    border: 3px solid rgba(255, 180, 0, 0.3);
    border-top: 3px solid #FFB400;
    border-radius: 50%;
    animation: spin 1s linear infinite;
}

@keyframes spin {
    0% { transform: rotate(0deg); }
    100% { transform: rotate(360deg); }
}

/* Bottom Section Styles */
.bottom-section {
    position: relative;
    min-height: 100vh;
    background: linear-gradient(135deg, #0a0a0a 0%, #1a1a2e 50%, #16213e 100%);
    padding: 100px 0;
    overflow: hidden;
}

.bottom-section::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background: radial-gradient(circle at 30% 50%, rgba(0, 191, 255, 0.1) 0%, transparent 50%),
                radial-gradient(circle at 70% 20%, rgba(255, 255, 255, 0.05) 0%, transparent 50%);
    z-index: 1;
}

/* Digital Marketing Interface */
.digital-marketing-container {
    position: relative;
    z-index: 2;
    display: flex;
    justify-content: center;
    align-items: center;
    min-height: 80vh;
}

.digital-interface {
    position: relative;
    width: 400px;
    height: 400px;
    border-radius: 50%;
    background: radial-gradient(circle, rgba(0, 191, 255, 0.1) 0%, rgba(0, 0, 0, 0.3) 70%);
    border: 2px solid rgba(0, 191, 255, 0.3);
    display: flex;
    justify-content: center;
    align-items: center;
    animation: pulse 3s ease-in-out infinite;
}

.central-element {
    text-align: center;
    z-index: 10;
}

.play-button {
    width: 80px;
    height: 80px;
    border-radius: 50%;
    background: linear-gradient(135deg, #00bfff 0%, #ffffff 100%);
    display: flex;
    justify-content: center;
    align-items: center;
    margin: 0 auto 20px;
    box-shadow: 0 0 30px rgba(0, 191, 255, 0.6);
    animation: glow 2s ease-in-out infinite alternate;
}

.play-button i {
    font-size: 30px;
    color: #000;
    margin-left: 5px;
}

.central-element h3 {
    color: #ffffff;
    font-size: 1.2rem;
    font-weight: bold;
    text-shadow: 0 0 10px rgba(0, 191, 255, 0.8);
    letter-spacing: 2px;
}

/* Marketing Icons */
.marketing-icons {
    position: absolute;
    width: 100%;
    height: 100%;
}

.marketing-icon {
    position: absolute;
    width: 60px;
    height: 60px;
    border-radius: 50%;
    background: rgba(255, 255, 255, 0.1);
    border: 2px solid rgba(0, 191, 255, 0.5);
    display: flex;
    flex-direction: column;
    justify-content: center;
    align-items: center;
    cursor: pointer;
    transition: all 0.3s ease;
    backdrop-filter: blur(10px);
}

.marketing-icon:hover {
    background: rgba(0, 191, 255, 0.2);
    border-color: #00bfff;
    transform: scale(1.1);
    box-shadow: 0 0 20px rgba(0, 191, 255, 0.6);
}

.marketing-icon i {
    font-size: 20px;
    color: #00bfff;
    margin-bottom: 5px;
}

.marketing-icon span {
    font-size: 10px;
    color: #ffffff;
    font-weight: bold;
    text-align: center;
}

/* Icon Positions */
.mobile-icon { top: 20px; left: 50%; transform: translateX(-50%); }
.seo-icon { top: 80px; right: 20px; }
.video-icon { top: 50%; right: 20px; transform: translateY(-50%); }
.website-icon { bottom: 80px; right: 20px; }
.social-icon { bottom: 20px; left: 50%; transform: translateX(-50%); }
.email-icon { bottom: 80px; left: 20px; }

/* Connection Lines */
.connection-lines {
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    z-index: 5;
}

.connection-line {
    stroke-dasharray: 5, 5;
    animation: dash 2s linear infinite;
    opacity: 0.6;
}

/* Background Patterns */
.bg-patterns {
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    z-index: 1;
}

.hex-grid {
    position: absolute;
    width: 100%;
    height: 100%;
    background-image: 
        linear-gradient(30deg, rgba(0, 191, 255, 0.1) 12%, transparent 12.5%, transparent 87%, rgba(0, 191, 255, 0.1) 87.5%, rgba(0, 191, 255, 0.1)),
        linear-gradient(150deg, rgba(0, 191, 255, 0.1) 12%, transparent 12.5%, transparent 87%, rgba(0, 191, 255, 0.1) 87.5%, rgba(0, 191, 255, 0.1)),
        linear-gradient(30deg, rgba(0, 191, 255, 0.1) 12%, transparent 12.5%, transparent 87%, rgba(0, 191, 255, 0.1) 87.5%, rgba(0, 191, 255, 0.1));
    background-size: 50px 50px;
    background-position: 0 0, 0 0, 25px 25px;
    animation: gridMove 20s linear infinite;
}

.data-lines {
    position: absolute;
    width: 100%;
    height: 100%;
    background: linear-gradient(45deg, transparent 40%, rgba(0, 191, 255, 0.1) 50%, transparent 60%);
    animation: dataFlow 3s ease-in-out infinite;
}

/* Tech Support Section */
.tech-support-container {
    position: relative;
    z-index: 2;
    padding: 0 50px;
}

.tech-support-box {
    background: rgba(0, 0, 0, 0.6);
    border: 1px solid rgba(0, 191, 255, 0.3);
    border-radius: 15px;
    padding: 40px;
    backdrop-filter: blur(10px);
    box-shadow: 0 0 30px rgba(0, 0, 0, 0.5);
    position: relative;
    overflow: hidden;
}

.tech-support-box::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background: linear-gradient(45deg, transparent 30%, rgba(0, 191, 255, 0.05) 50%, transparent 70%);
    animation: shimmer 4s ease-in-out infinite;
}

.tech-support-box h2 {
    color: #ffffff;
    font-size: 2rem;
    font-weight: bold;
    margin-bottom: 20px;
    text-shadow: 0 0 10px rgba(0, 191, 255, 0.5);
}

.tech-support-box p {
    color: #cccccc;
    font-size: 1.1rem;
    line-height: 1.8;
    margin-bottom: 30px;
}

.tech-features {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 20px;
}

.tech-feature {
    display: flex;
    align-items: center;
    padding: 15px;
    background: rgba(0, 191, 255, 0.1);
    border-radius: 10px;
    border: 1px solid rgba(0, 191, 255, 0.2);
    transition: all 0.3s ease;
}

.tech-feature:hover {
    background: rgba(0, 191, 255, 0.2);
    transform: translateY(-2px);
    box-shadow: 0 5px 15px rgba(0, 191, 255, 0.3);
}

.tech-feature i {
    font-size: 24px;
    color: #00bfff;
    margin-right: 15px;
}

.tech-feature span {
    color: #ffffff;
    font-weight: 500;
}

/* City Background */
.city-background {
    position: absolute;
    top: 0;
    right: 0;
    width: 50%;
    height: 100%;
    z-index: 1;
    overflow: hidden;
}

.city-skyline {
    width: 100%;
    height: 100%;
    object-fit: cover;
    opacity: 0.3;
    filter: blur(2px);
    animation: cityGlow 6s ease-in-out infinite alternate;
}

/* Animations */
@keyframes pulse {
    0%, 100% { transform: scale(1); box-shadow: 0 0 20px rgba(0, 191, 255, 0.3); }
    50% { transform: scale(1.05); box-shadow: 0 0 40px rgba(0, 191, 255, 0.6); }
}

@keyframes glow {
    0% { box-shadow: 0 0 20px rgba(0, 191, 255, 0.6); }
    100% { box-shadow: 0 0 40px rgba(0, 191, 255, 0.9); }
}

@keyframes dash {
    0% { stroke-dashoffset: 0; }
    100% { stroke-dashoffset: 20; }
}

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

@keyframes dataFlow {
    0%, 100% { opacity: 0.3; transform: translateX(-100%); }
    50% { opacity: 0.6; transform: translateX(100%); }
}

@keyframes shimmer {
    0% { transform: translateX(-100%); }
    100% { transform: translateX(100%); }
}

@keyframes cityGlow {
    0% { filter: blur(2px) brightness(0.8); }
    100% { filter: blur(1px) brightness(1.2); }
}

/* Responsive Design for Bottom Section */
@media (max-width: 992px) {
    .bottom-section {
        padding: 50px 0;
    }
    
    .digital-interface {
        width: 300px;
        height: 300px;
    }
    
    .play-button {
        width: 60px;
        height: 60px;
    }
    
    .play-button i {
        font-size: 20px;
    }
    
    .central-element h3 {
        font-size: 1rem;
    }
    
    .marketing-icon {
        width: 45px;
        height: 45px;
    }
    
    .marketing-icon i {
        font-size: 16px;
    }
    
    .marketing-icon span {
        font-size: 8px;
    }
    
    .tech-support-container {
        padding: 0 20px;
        margin-top: 50px;
    }
    
    .tech-support-box {
        padding: 30px 20px;
    }
    
    .tech-support-box h2 {
        font-size: 1.5rem;
    }
    
    .tech-features {
        grid-template-columns: 1fr;
        gap: 15px;
    }
}

@media (max-width: 768px) {
    .digital-interface {
        width: 250px;
        height: 250px;
    }
    
    .marketing-icon {
        width: 40px;
        height: 40px;
    }
    
    .marketing-icon i {
        font-size: 14px;
    }
    
    .marketing-icon span {
        font-size: 7px;
    }
    
    .tech-support-box {
        padding: 20px 15px;
    }
    
    .tech-support-box h2 {
        font-size: 1.3rem;
    }
    
    .tech-support-box p {
        font-size: 1rem;
    }
}