/* 基础样式 */
:root {
    /* 轮播图样式变量 */
    --carousel-height: 400px;
    --carousel-transition: 0.5s;
    --primary-color: #00a8ff;
    --secondary-color: #0097e6;
    --accent-color: #00e4ff;
    --dark-color: #1e272e;
    --light-color: #f5f6fa;
    --text-color: #2d3436;
    --text-light: #636e72;
    --success-color: #2ecc71;
    --warning-color: #f39c12;
    --danger-color: #e74c3c;
    --transition-speed: 0.3s;
    --border-radius: 5px;
    --box-shadow: 0 5px 15px rgba(0, 0, 0, 0.1);
    --glow-shadow: 0 0 10px rgba(0, 168, 255, 0.5), 0 0 20px rgba(0, 168, 255, 0.3);
}

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

html {
    scroll-behavior: smooth;
}

body {
    font-family: 'Roboto', sans-serif;
    line-height: 1.6;
    color: var(--text-color);
    background-color: var(--light-color);
    overflow-x: hidden;
}

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

a {
    text-decoration: none;
    color: inherit;
    transition: all var(--transition-speed) ease;
}

/* 轮播图样式 */
.carousel-section {
    padding: 80px 0;
    background-color: var(--light-color);
    position: relative;
    overflow: hidden;
}

.carousel-container {
    position: relative;
    width: 100%;
    height: var(--carousel-height);
    margin: 40px auto;
    overflow: hidden;
    border-radius: 10px;
    box-shadow: var(--box-shadow);
}

.carousel-track {
    display: flex;
    width: 100%;
    height: 100%;
    transition: transform var(--carousel-transition) ease-in-out;
}

.carousel-slide {
    min-width: 100%;
    height: 100%;
    position: relative;
    opacity: 0;
    transition: opacity var(--carousel-transition) ease-in-out;
    display: none;
}

.carousel-slide.active {
    opacity: 1;
    display: block;
}

.carousel-slide img {
    width: 100%;
    height: 100%;
    object-fit: cover;
}

.carousel-caption {
    position: absolute;
    bottom: 0;
    left: 0;
    width: 100%;
    padding: 20px;
    background: linear-gradient(to top, rgba(0,0,0,0.8), rgba(0,0,0,0));
    color: white;
    text-align: left;
}

.carousel-caption h3 {
    font-size: 24px;
    margin-bottom: 10px;
    font-weight: 700;
    text-shadow: 1px 1px 3px rgba(0,0,0,0.5);
}

.carousel-caption p {
    font-size: 16px;
    max-width: 80%;
    text-shadow: 1px 1px 2px rgba(0,0,0,0.5);
}

.carousel-button {
    position: absolute;
    top: 50%;
    transform: translateY(-50%);
    background-color: rgba(0,0,0,0.5);
    color: white;
    border: none;
    width: 50px;
    height: 50px;
    border-radius: 50%;
    font-size: 18px;
    cursor: pointer;
    transition: all 0.3s ease;
    display: flex;
    align-items: center;
    justify-content: center;
    z-index: 10;
}

.carousel-button:hover {
    background-color: var(--primary-color);
}

.carousel-button.prev {
    left: 20px;
}

.carousel-button.next {
    right: 20px;
}

.carousel-indicators {
    position: absolute;
    bottom: 20px;
    left: 50%;
    transform: translateX(-50%);
    display: flex;
    gap: 10px;
    z-index: 10;
}

.indicator {
    width: 12px;
    height: 12px;
    border-radius: 50%;
    background-color: rgba(255,255,255,0.5);
    cursor: pointer;
    transition: all 0.3s ease;
}

.indicator.active {
    background-color: var(--primary-color);
    transform: scale(1.2);
}

/* 响应式轮播图 */
@media (max-width: 768px) {
    :root {
        --carousel-height: 300px;
    }
    
    .carousel-caption h3 {
        font-size: 20px;
    }
    
    .carousel-caption p {
        font-size: 14px;
    }
    
    .carousel-button {
        width: 40px;
        height: 40px;
        font-size: 16px;
    }
}

@media (max-width: 480px) {
    :root {
        --carousel-height: 250px;
    }
    
    .carousel-caption h3 {
        font-size: 18px;
    }
    
    .carousel-caption p {
        font-size: 12px;
        max-width: 100%;
    }
    
    .carousel-button {
        width: 35px;
        height: 35px;
        font-size: 14px;
    }
}

ul {
    list-style: none;
}

img {
    max-width: 100%;
    height: auto;
}

/* 按钮样式 */
.btn {
    display: inline-block;
    padding: 12px 30px;
    border-radius: 30px;
    font-weight: 500;
    text-align: center;
    cursor: pointer;
    transition: all var(--transition-speed) ease;
    border: none;
    outline: none;
}

.btn-primary {
    background: linear-gradient(135deg, var(--primary-color), var(--secondary-color));
    color: white;
    box-shadow: 0 4px 15px rgba(0, 168, 255, 0.4);
}

.btn-primary:hover {
    transform: translateY(-3px);
    box-shadow: 0 7px 20px rgba(0, 168, 255, 0.5);
}

.btn-outline {
    background: transparent;
    color: var(--primary-color);
    border: 2px solid var(--primary-color);
}

.btn-outline:hover {
    background-color: var(--primary-color);
    color: white;
    transform: translateY(-3px);
}

.btn-secondary {
    background: linear-gradient(135deg, var(--dark-color), #2c3e50);
    color: white;
    box-shadow: 0 4px 15px rgba(30, 39, 46, 0.4);
}

.btn-secondary:hover {
    transform: translateY(-3px);
    box-shadow: 0 7px 20px rgba(30, 39, 46, 0.5);
}

.btn-small {
    padding: 8px 20px;
    font-size: 0.9rem;
    border-radius: 20px;
    background: var(--primary-color);
    color: white;
    display: inline-block;
    transition: all var(--transition-speed) ease;
}

.btn-small:hover {
    background: var(--secondary-color);
    transform: translateY(-2px);
}

/* 导航栏样式 */
#navbar {
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    z-index: 1000;
    background-color: transparent;
    transition: all var(--transition-speed) ease;
}

#navbar .container {
    display: flex;
    align-items: center;
    justify-content: space-between;
    height: 52px;
}

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

.logo-text {
    font-size: 1.8rem;
    font-weight: 700;
    color: white;
    letter-spacing: 1px;
}

.logo-text .highlight {
    color: var(--primary-color);
}

.nav-menu {
    display: flex;
    justify-content: flex-end;
    margin-left: auto;
}

.nav-link {
    padding: 25px 15px;
    color: white;
    font-weight: 500;
    position: relative;
}

.nav-link::after {
    content: '';
    position: absolute;
    bottom: 15px;
    left: 50%;
    width: 0;
    height: 2px;
    background-color: var(--primary-color);
    transition: all var(--transition-speed) ease;
    transform: translateX(-50%);
}

.nav-link:hover::after,
.nav-link.active::after {
    width: 30px;
}

.nav-link:hover,
.nav-link.active {
    color: var(--primary-color);
}

.menu-toggle {
    display: none;
    cursor: pointer;
}

.bar {
    display: block;
    width: 25px;
    height: 3px;
    margin: 5px auto;
    background-color: white;
    transition: all var(--transition-speed) ease;
}

/* 英雄区样式 */
.hero {
    position: relative;
    height: 100vh;
    display: flex;
    align-items: center;
    overflow: hidden;
    color: white;
    padding-top: 80px;
}

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

.hero-carousel-track {
    position: relative;
    height: 100%;
    width: 100%;
}

.hero-carousel-slide {
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    opacity: 0;
    transition: opacity 1s ease;
}

.hero-carousel-slide.active {
    opacity: 1;
}

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

.hero-overlay {
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background: linear-gradient(to right, rgba(0,0,0,0.8), rgba(0,0,0,0.5));
    z-index: 2;
}

.hero-carousel-buttons {
    position: absolute;
    top: 50%;
    width: 100%;
    display: flex;
    justify-content: space-between;
    padding: 0 30px;
    transform: translateY(-50%);
    z-index: 3;
}

.hero-carousel-button {
    background-color: rgba(0,0,0,0.5);
    color: white;
    border: none;
    width: 50px;
    height: 50px;
    border-radius: 50%;
    font-size: 18px;
    cursor: pointer;
    transition: all 0.3s ease;
    display: flex;
    align-items: center;
    justify-content: center;
}

.hero-carousel-button:hover {
    background-color: var(--primary-color);
}

.hero-carousel-indicators {
    position: absolute;
    bottom: 30px;
    left: 50%;
    transform: translateX(-50%);
    display: flex;
    gap: 10px;
    z-index: 3;
}

.hero-indicator {
    width: 12px;
    height: 12px;
    border-radius: 50%;
    background-color: rgba(255,255,255,0.5);
    cursor: pointer;
    transition: all 0.3s ease;
}

.hero-indicator.active {
    background-color: var(--primary-color);
    transform: scale(1.2);
}

.hero .container {
    position: relative;
    z-index: 2;
    display: flex;
    justify-content: space-between;
    align-items: center;
}

.hero-content {
    width: 50%;
}

.hero-image {
    width: 40%;
    position: relative;
}

.hero h1 {
    font-size: 3.5rem;
    font-weight: 700;
    margin-bottom: 20px;
    position: relative;
    display: inline-block;
}

.hero h2 {
    font-size: 2rem;
    font-weight: 400;
    margin-bottom: 20px;
    color: var(--accent-color);
}

.hero p {
    font-size: 1.1rem;
    margin-bottom: 30px;
    color: rgba(255, 255, 255, 0.8);
    max-width: 600px;
}

.hero-buttons {
    display: flex;
    gap: 15px;
}

/* 故障艺术文字效果 */
.glitch {
    position: relative;
    color: white;
    letter-spacing: 2px;
}

.glitch::before,
.glitch::after {
    content: attr(data-text);
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    opacity: 0.8;
}

.glitch::before {
    color: var(--accent-color);
    z-index: -2;
    animation: glitch-effect 2.5s infinite;
}

.glitch::after {
    color: var(--primary-color);
    z-index: -1;
    animation: glitch-effect 3s infinite;
}

@keyframes glitch-effect {
    0% {
        transform: translate(0);
    }
    20% {
        transform: translate(-3px, 3px);
    }
    40% {
        transform: translate(-3px, -3px);
    }
    60% {
        transform: translate(3px, 3px);
    }
    80% {
        transform: translate(3px, -3px);
    }
    100% {
        transform: translate(0);
    }
}

/* 3D立方体效果 */
.cube-wrapper {
    perspective: 800px;
    width: 200px;
    height: 200px;
    margin: 0 auto;
}

.cube {
    width: 100%;
    height: 100%;
    position: relative;
    transform-style: preserve-3d;
    animation: cube-rotate 20s linear infinite;
}

.cube-face {
    position: absolute;
    width: 200px;
    height: 200px;
    background: rgba(0, 168, 255, 0.1);
    border: 2px solid var(--primary-color);
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 3rem;
    color: var(--primary-color);
    box-shadow: 0 0 20px rgba(0, 168, 255, 0.3) inset;
}

.cube-face.front {
    transform: translateZ(100px);
}

.cube-face.back {
    transform: rotateY(180deg) translateZ(100px);
}

.cube-face.right {
    transform: rotateY(90deg) translateZ(100px);
}

.cube-face.left {
    transform: rotateY(-90deg) translateZ(100px);
}

.cube-face.top {
    transform: rotateX(90deg) translateZ(100px);
}

.cube-face.bottom {
    transform: rotateX(-90deg) translateZ(100px);
}

@keyframes cube-rotate {
    0% {
        transform: rotateX(0) rotateY(0) rotateZ(0);
    }
    100% {
        transform: rotateX(360deg) rotateY(360deg) rotateZ(360deg);
    }
}

/* 浮动数字效果 */
.floating-numbers {
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    overflow: hidden;
    z-index: -1;
}

.number {
    position: absolute;
    color: rgba(0, 168, 255, 0.2);
    font-family: monospace;
    font-weight: bold;
    animation: float-down linear infinite;
}

@keyframes float-down {
    0% {
        transform: translateY(-100%);
        opacity: 0;
    }
    10% {
        opacity: 1;
    }
    90% {
        opacity: 1;
    }
    100% {
        transform: translateY(1000%);
        opacity: 0;
    }
}

/* 滚动指示器 */
.scroll-down {
    position: absolute;
    bottom: 30px;
    left: 50%;
    transform: translateX(-50%);
    z-index: 2;
}

.scroll-down a {
    display: flex;
    flex-direction: column;
    align-items: center;
    color: white;
}

.scroll-down span {
    display: block;
    width: 20px;
    height: 20px;
    border-bottom: 2px solid var(--primary-color);
    border-right: 2px solid var(--primary-color);
    transform: rotate(45deg);
    margin: -10px;
    animation: scroll-down 2s infinite;
}

.scroll-down span:nth-child(2) {
    animation-delay: 0.2s;
}

.scroll-down span:nth-child(3) {
    animation-delay: 0.4s;
}

@keyframes scroll-down {
    0% {
        opacity: 0;
        transform: rotate(45deg) translate(-20px, -20px);
    }
    50% {
        opacity: 1;
    }
    100% {
        opacity: 0;
        transform: rotate(45deg) translate(20px, 20px);
    }
}

/* 服务区域样式 */
.services {
    padding: 100px 0;
    background-color: white;
}

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

.section-header h2 {
    font-size: 2.5rem;
    font-weight: 700;
    color: var(--dark-color);
    margin-bottom: 15px;
}

.separator {
    display: flex;
    align-items: center;
    justify-content: center;
    margin: 15px auto;
}

.separator span {
    width: 60px;
    height: 4px;
    background: linear-gradient(90deg, var(--primary-color), var(--accent-color));
    border-radius: 2px;
}

.section-header p {
    font-size: 1.1rem;
    color: var(--text-light);
    max-width: 700px;
    margin: 0 auto;
}

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

.service-card {
    background-color: white;
    border-radius: var(--border-radius);
    box-shadow: var(--box-shadow);
    padding: 30px;
    text-align: center;
    transition: all var(--transition-speed) ease;
    position: relative;
    overflow: hidden;
    z-index: 1;
}

.service-card::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background: linear-gradient(135deg, var(--primary-color), var(--accent-color));
    z-index: -1;
    opacity: 0;
    transition: all var(--transition-speed) ease;
}

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

.service-card:hover::before {
    opacity: 1;
}

.service-card:hover h3,
.service-card:hover p {
    color: white;
}

.service-icon {
    width: 70px;
    height: 70px;
    margin: 0 auto 20px;
    background-color: rgba(0, 168, 255, 0.1);
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 2rem;
    color: var(--primary-color);
    transition: all var(--transition-speed) ease;
}

.service-card:hover .service-icon {
    background-color: white;
    box-shadow: var(--glow-shadow);
}

.service-card h3 {
    font-size: 1.5rem;
    margin-bottom: 15px;
    transition: all var(--transition-speed) ease;
}

.service-card p {
    color: var(--text-light);
    transition: all var(--transition-speed) ease;
}

.service-hover {
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background-color: rgba(0, 168, 255, 0.95);
    display: flex;
    align-items: center;
    justify-content: center;
    opacity: 0;
    transform: scale(0.8);
    transition: all var(--transition-speed) ease;
    border-radius: var(--border-radius);
    z-index: 2;
}

.service-card:hover .service-hover {
    opacity: 1;
    transform: scale(1);
}

.service-hover-content {
    padding: 20px;
    color: white;
    text-align: left;
}

.service-hover-content p {
    color: white;
    margin-bottom: 15px;
}

.service-hover-content ul {
    margin-bottom: 20px;
    padding-left: 20px;
}

.service-hover-content ul li {
    margin-bottom: 8px;
    position: relative;
    padding-left: 15px;
}

.service-hover-content ul li::before {
    content: '•';
    position: absolute;
    left: 0;
    color: white;
}

/* 解决方案区域样式 */
.solutions {
    padding: 100px 0;
    background-color: #f8f9fa;
}

.solutions-tabs {
    margin-top: 50px;
}

.tabs-nav {
    display: flex;
    justify-content: center;
    margin-bottom: 30px;
    flex-wrap: wrap;
}

.tab-btn {
    padding: 12px 25px;
    background-color: white;
    border: none;
    border-radius: 30px;
    margin: 0 10px 10px;
    cursor: pointer;
    font-weight: 500;
    transition: all var(--transition-speed) ease;
    box-shadow: 0 2px 10px rgba(0, 0, 0, 0.05);
}

.tab-btn.active {
    background: linear-gradient(135deg, var(--primary-color), var(--secondary-color));
    color: white;
    box-shadow: 0 5px 15px rgba(0, 168, 255, 0.3);
}

.tab-panel {
    display: none;
    animation: fade-in 0.5s ease;
}

.tab-panel.active {
    display: block;
}

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

.solution-content {
    display: flex;
    align-items: center;
    flex-wrap: wrap;
    gap: 40px;
}

.solution-text {
    flex: 1;
    min-width: 300px;
}

.solution-text h3 {
    font-size: 2rem;
    margin-bottom: 20px;
    color: var(--dark-color);
}

.solution-text p {
    color: var(--text-light);
    margin-bottom: 25px;
}

.solution-features {
    margin-bottom: 30px;
}

.solution-features li {
    margin-bottom: 12px;
    display: flex;
    align-items: center;
}

.solution-features i {
    color: var(--success-color);
    margin-right: 10px;
    font-size: 1.2rem;
}

.solution-image {
    flex: 1;
    min-width: 300px;
}

.data-visualization {
    background-color: white;
    border-radius: var(--border-radius);
    box-shadow: var(--box-shadow);
    padding: 20px;
    height: 300px;
    display: flex;
    align-items: center;
    justify-content: center;
    position: relative;
    overflow: hidden;
}

.data-visualization::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background: linear-gradient(135deg, rgba(0, 168, 255, 0.05), rgba(0, 228, 255, 0.05));
    z-index: 0;
}

.data-visualization canvas {
    position: relative;
    z-index: 1;
    width: 100%;
    height: 100%;
}

/* 数据统计区域样式 */
.stats {
    padding: 80px 0;
    background: linear-gradient(135deg, var(--primary-color), var(--secondary-color));
    color: white;
}

.stats-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(200px, 1fr));
    gap: 30px;
    text-align: center;
}

.stat-item {
    padding: 20px;
}

.stat-icon {
    font-size: 2.5rem;
    margin-bottom: 20px;
    color: rgba(255, 255, 255, 0.9);
}

.stat-number {
    font-size: 3rem;
    font-weight: 700;
    margin-bottom: 10px;
}

.stat-text {
    font-size: 1.2rem;
    opacity: 0.9;
}

/* 关于我们区域样式 */
.about {
    padding: 100px 0;
    background-color: white;
}

.about-content {
    display: flex;
    flex-wrap: wrap;
    gap: 50px;
    margin-top: 50px;
}

.about-image {
    flex: 1;
    min-width: 300px;
}

.tech-background {
    width: 100%;
    height: 400px;
    background-color: var(--dark-color);
    border-radius: var(--border-radius);
    overflow: hidden;
    position: relative;
}

.about-text {
    flex: 1;
    min-width: 300px;
}

.about-text h3 {
    font-size: 1.8rem;
    margin-bottom: 15px;
    color: var(--dark-color);
}

.about-text p {
    color: var(--text-light);
    margin-bottom: 5px;
    text-indent: 2em;
}

.values-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(200px, 1fr));
    gap: 20px;
    margin-top: 30px;
}

.value-item {
    text-align: center;
    padding: 20px;
    background-color: #f8f9fa;
    border-radius: var(--border-radius);
    transition: all var(--transition-speed) ease;
}

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

.value-item i {
    font-size: 2rem;
    color: var(--primary-color);
    margin-bottom: 15px;
}

.value-item h4 {
    font-size: 1.2rem;
    margin-bottom: 10px;
    color: var(--dark-color);
}

.value-item p {
    color: var(--text-light);
    font-size: 0.9rem;
    margin-bottom: 0;
}

/* 团队区域样式 */
.team {
    padding: 100px 0;
    background-color: #f8f9fa;
}

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

.team-member {
    background-color: white;
    border-radius: var(--border-radius);
    overflow: hidden;
    box-shadow: var(--box-shadow);
    transition: all var(--transition-speed) ease;
}

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

.member-image {
    height: 300px;
    position: relative;
    overflow: hidden;
    background-color: #f1f2f6;
}

.member-placeholder {
    width: 100%;
    height: 100%;
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 5rem;
    color: #dfe4ea;
}

.member-social {
    position: absolute;
    bottom: 0;
    left: 0;
    width: 100%;
    padding: 15px;
    background: linear-gradient(to top, rgba(0, 0, 0, 0.7), transparent);
    display: flex;
    justify-content: center;
    gap: 15px;
    transform: translateY(100%);
    transition: all var(--transition-speed) ease;
}

.team-member:hover .member-social {
    transform: translateY(0);
}

.member-social a {
    width: 35px;
    height: 35px;
    border-radius: 50%;
    background-color: white;
    display: flex;
    align-items: center;
    justify-content: center;
    color: var(--dark-color);
    transition: all var(--transition-speed) ease;
}

.member-social a:hover {
    background-color: var(--primary-color);
    color: white;
    transform: translateY(-3px);
}

.member-info {
    padding: 20px;
    text-align: center;
}

.member-info h3 {
    font-size: 1.3rem;
    margin-bottom: 5px;
    color: var(--dark-color);
}

.member-info p {
    color: var(--text-light);
    font-size: 0.9rem;
}

/* 联系我们区域样式 */
.contact {
    padding: 100px 0;
    background-color: white;
}

.contact-content {
    display: flex;
    flex-wrap: wrap;
    gap: 50px;
    margin-top: 50px;
}

.contact-info {
    flex: 1;
    min-width: 300px;
}

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

.contact-item i {
    font-size: 1.5rem;
    color: var(--primary-color);
    margin-right: 20px;
    width: 40px;
    height: 40px;
    background-color: rgba(0, 168, 255, 0.1);
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
}

.contact-item h3 {
    font-size: 1.2rem;
    margin-bottom: 5px;
    color: var(--dark-color);
}

.contact-item p {
    color: var(--text-light);
}

.social-links {
    display: flex;
    gap: 15px;
    margin-top: 30px;
}

.social-links a {
    width: 45px;
    height: 45px;
    border-radius: 50%;
    background-color: #f1f2f6;
    display: flex;
    align-items: center;
    justify-content: center;
    color: var(--dark-color);
    font-size: 1.2rem;
    transition: all var(--transition-speed) ease;
}

.social-links a:hover {
    background-color: var(--primary-color);
    color: white;
    transform: translateY(-5px);
}

.contact-form {
    flex: 1;
    min-width: 300px;
}

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

.form-group input,
.form-group textarea {
    width: 100%;
    padding: 15px 0;
    background-color: transparent;
    border: none;
    border-bottom: 1px solid #ddd;
    color: var(--text-color);
    font-size: 1rem;
    outline: none;
    transition: all var(--transition-speed) ease;
}

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

.form-group input:focus,
.form-group textarea:focus {
    border-color: var(--primary-color);
}

.form-border {
    position: absolute;
    bottom: 0;
    left: 0;
    width: 0;
    height: 2px;
    background-color: var(--primary-color);
    transition: all var(--transition-speed) ease;
}

.form-group input:focus ~ .form-border,
.form-group textarea:focus ~ .form-border {
    width: 100%;
}

/* 页脚样式 */
.footer {
    background-color: var(--dark-color);
    color: white;
    padding-top: 70px;
}

.footer-content {
    display: flex;
    flex-wrap: wrap;
    gap: 50px;
    margin-bottom: 50px;
}

.footer-logo {
    flex: 1;
    min-width: 250px;
}

.footer-logo p {
    color: rgba(255, 255, 255, 0.7);
    margin-top: 15px;
}

.footer-links {
    flex: 2;
    display: flex;
    flex-wrap: wrap;
    gap: 30px;
}

.footer-column {
    flex: 1;
    min-width: 150px;
}

.footer-column h3 {
    font-size: 1.2rem;
    margin-bottom: 20px;
    position: relative;
    padding-bottom: 10px;
}

.footer-column h3::after {
    content: '';
    position: absolute;
    bottom: 0;
    left: 0;
    width: 30px;
    height: 2px;
    background-color: var(--primary-color);
}

.footer-column ul li {
    margin-bottom: 10px;
}

.footer-column ul li a {
    color: rgba(255, 255, 255, 0.7);
    transition: all var(--transition-speed) ease;
}

.footer-column ul li a:hover {
    color: var(--primary-color);
    padding-left: 5px;
}

/* 页脚联系我们样式 */
.footer-contact-info p {
    color: rgba(255, 255, 255, 0.7);
    margin-bottom: 10px;
    display: flex;
    align-items: center;
}

.footer-contact-info p i {
    margin-right: 10px;
    color: var(--primary-color);
    width: 20px;
}

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

.footer-social-links a {
    color: rgba(255, 255, 255, 0.7);
    transition: all var(--transition-speed) ease;
}

.footer-social-links a:hover {
    color: var(--primary-color);
    transform: translateY(-3px);
}

.footer-bottom {
    border-top: 1px solid rgba(255, 255, 255, 0.1);
    padding: 20px 0;
    display: flex;
    justify-content: space-between;
    flex-wrap: wrap;
    gap: 20px;
}

.footer-bottom p {
    color: rgba(255, 255, 255, 0.7);
}

.footer-bottom-links {
    display: flex;
    gap: 20px;
}

.footer-bottom-links a {
    color: rgba(255, 255, 255, 0.7);
    transition: all var(--transition-speed) ease;
}

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

/* 返回顶部按钮 */
.back-to-top {
    position: fixed;
    bottom: 30px;
    right: 30px;
    width: 50px;
    height: 50px;
    background-color: var(--primary-color);
    color: white;
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 1.2rem;
    box-shadow: 0 5px 15px rgba(0, 168, 255, 0.3);
    opacity: 0;
    visibility: hidden;
    transform: translateY(20px);
    transition: all var(--transition-speed) ease;
    z-index: 99;
}

.back-to-top.active {
    opacity: 1;
    visibility: visible;
    transform: translateY(0);
}

.back-to-top:hover {
    background-color: var(--secondary-color);
    transform: translateY(-5px);
}

/* 响应式设计 */
@media (max-width: 992px) {
    .hero h1 {
        font-size: 3rem;
    }
    
    .hero h2 {
        font-size: 1.8rem;
    }
    
    .hero .container {
        flex-direction: column;
        text-align: center;
    }
    
    .hero-content,
    .hero-image {
        width: 100%;
    }
    
    .hero-content {
        margin-bottom: 50px;
    }
    
    .hero-buttons {
        justify-content: center;
    }
    
    .cube-wrapper {
        width: 150px;
        height: 150px;
    }
    
    .cube-face {
        width: 150px;
        height: 150px;
    }
    
    .cube-face.front {
        transform: translateZ(75px);
    }
    
    .cube-face.back {
        transform: rotateY(180deg) translateZ(75px);
    }
    
    .cube-face.right {
        transform: rotateY(90deg) translateZ(75px);
    }
    
    .cube-face.left {
        transform: rotateY(-90deg) translateZ(75px);
    }
    
    .cube-face.top {
        transform: rotateX(90deg) translateZ(75px);
    }
    
    .cube-face.bottom {
        transform: rotateX(-90deg) translateZ(75px);
    }
}

@media (max-width: 768px) {
    #navbar .container {
        display: flex;
        justify-content: space-between;
        align-items: center;
        padding: 15px 20px;
    }
    
    .menu-toggle {
        display: block;
    }
    
    .nav-menu {
        position: fixed;
        top: 70px;
        left: -100%;
        width: 100%;
        background-color: rgba(30, 39, 46, 0.95);
        flex-direction: column;
        padding: 20px 0;
        transition: all var(--transition-speed) ease;
        box-shadow: 0 10px 15px rgba(0, 0, 0, 0.1);
    }
    
    .nav-menu.active {
        left: 0;
    }
    
    .nav-link {
        padding: 15px;
        width: 100%;
        text-align: center;
    }
    
    .nav-link::after {
        bottom: 10px;
    }
    
    .hero h1 {
        font-size: 2.5rem;
    }
    
    .hero h2 {
        font-size: 1.5rem;
    }
    
    .section-header h2 {
        font-size: 2rem;
    }
    
    .solution-text h3 {
        font-size: 1.8rem;
    }
}

@media (max-width: 576px) {
    .hero h1 {
        font-size: 2rem;
    }
    
    .hero h2 {
        font-size: 1.3rem;
    }
    
    .hero p {
        font-size: 1rem;
    }
    
    .hero-buttons {
        flex-direction: column;
        gap: 10px;
    }
    
    .btn {
        width: 100%;
    }
    
    .section-header h2 {
        font-size: 1.8rem;
    }
    
    .tabs-nav {
        flex-direction: column;
        align-items: center;
    }
    
    .tab-btn {
        width: 100%;
        margin: 5px 0;
    }
    
    .stat-number {
        font-size: 2.5rem;
    }
    
    .footer-bottom {
        flex-direction: column;
        text-align: center;
    }
    
    .footer-bottom-links {
        justify-content: center;
    }
}