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

body {
    font-family: 'Inter', -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, sans-serif;
    line-height: 1.6;
    color: #333;
    overflow-x: hidden;
}

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

/* 导航栏 */
.navbar {
    position: fixed;
    top: 0;
    width: 100%;
    background: rgba(255, 255, 255, 0.95);
    backdrop-filter: blur(10px);
    z-index: 1000;
    transition: all 0.3s ease;
    border-bottom: 1px solid rgba(0, 0, 0, 0.1);
}

.nav-container {
    max-width: 1200px;
    margin: 0 auto;
    padding: 0 20px;
    display: flex;
    justify-content: space-between;
    align-items: center;
    height: 70px;
}

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

.nav-logo a {
    text-decoration: none;
    display: flex;
    align-items: center;
}

.nav-logo .logo-image {
    height: 40px;
    width: auto;
    /* 保持LOGO原始颜色（绿色） */
    filter: none;
    transition: filter 0.3s ease;
}

.nav-logo:hover .logo-image {
    /* 悬停时稍微增强绿色 */
    filter: brightness(1.1) saturate(1.2);
}

.nav-logo .logo-text {
    font-size: 24px;
    font-weight: 700;
    /* 黑色文字 */
    color: #333;
    background: none;
    -webkit-background-clip: unset;
    -webkit-text-fill-color: unset;
    background-clip: unset;
}

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

.nav-link {
    text-decoration: none;
    color: #333;
    font-weight: 500;
    transition: all 0.3s ease;
    position: relative;
}

.nav-link:hover {
    color: #27ae60;
}

.nav-link::after {
    content: '';
    position: absolute;
    bottom: -5px;
    left: 0;
    width: 0;
    height: 2px;
    background: linear-gradient(135deg, #27ae60 0%, #2ecc71 100%);
    transition: width 0.3s ease;
}

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

.language-switch {
    display: flex;
    gap: 5px;
    margin-left: 20px;
}

.lang-btn {
    padding: 8px 12px;
    border: 1px solid #ddd;
    background: white;
    color: #333;
    border-radius: 5px;
    cursor: pointer;
    font-size: 0.9rem;
    font-weight: 500;
    transition: all 0.3s ease;
}

.lang-btn:hover {
    border-color: #27ae60;
    color: #27ae60;
}

.lang-btn.active {
    background: #27ae60;
    color: white;
    border-color: #27ae60;
}

.nav-toggle {
    display: none;
    flex-direction: column;
    cursor: pointer;
}

.bar {
    width: 25px;
    height: 3px;
    background: #333;
    margin: 3px 0;
    transition: 0.3s;
}

/* 英雄区域 */
.hero {
    min-height: 100vh;
    display: flex;
    align-items: center;
    position: relative;
    background: linear-gradient(135deg, #27ae60 0%, #2ecc71 100%);
    overflow: hidden;
}

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

.particles {
    position: absolute;
    width: 100%;
    height: 100%;
    background-image: 
        radial-gradient(circle at 20% 80%, rgba(255, 255, 255, 0.1) 0%, transparent 50%),
        radial-gradient(circle at 80% 20%, rgba(255, 255, 255, 0.1) 0%, transparent 50%),
        radial-gradient(circle at 40% 40%, rgba(255, 255, 255, 0.05) 0%, transparent 50%);
    animation: float 20s ease-in-out infinite;
}

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

.hero-content {
    position: relative;
    z-index: 2;
    display: grid;
    grid-template-columns: 1.2fr 0.8fr;
    gap: 80px;
    align-items: center;
    max-width: 1400px;
    margin: 0 auto;
    padding: 0 20px;
}

.hero-title {
    font-size: 3.5rem;
    font-weight: 700;
    color: white;
    margin-bottom: 20px;
    line-height: 1.2;
    min-width: 600px;
    white-space: nowrap;
}

.gradient-text {
    background: linear-gradient(45deg, #ffd700, #ff6b6b);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
}

.hero-subtitle {
    font-size: 1.2rem;
    color: rgba(255, 255, 255, 0.9);
    margin-bottom: 30px;
    line-height: 1.6;
}

.hero-buttons {
    display: flex;
    gap: 20px;
}

.btn {
    padding: 15px 30px;
    border: none;
    border-radius: 50px;
    font-size: 1rem;
    font-weight: 600;
    cursor: pointer;
    transition: all 0.3s ease;
    text-decoration: none;
    display: inline-block;
    text-align: center;
}

.btn-primary {
    background: linear-gradient(45deg, #ffd700, #ff6b6b);
    color: white;
    box-shadow: 0 10px 30px rgba(255, 215, 0, 0.3);
}

.btn-primary:hover {
    transform: translateY(-3px);
    box-shadow: 0 15px 40px rgba(255, 215, 0, 0.4);
}

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

.btn-secondary:hover {
    background: white;
    color: #27ae60;
    transform: translateY(-3px);
}

.btn-demo {
    background: linear-gradient(45deg, #667eea, #764ba2);
    color: white;
    box-shadow: 0 10px 30px rgba(102, 126, 234, 0.3);
}

.btn-demo:hover {
    transform: translateY(-3px);
    box-shadow: 0 15px 40px rgba(102, 126, 234, 0.4);
}

/* 浮动卡片 - 悬浮球 */
.floating-cards {
    position: relative;
    height: 900px;
    width: 900px;
    margin: 0 0 0 auto;
    transition: filter 0.3s ease;
    perspective: 1000px; /* 添加透视效果 */
}

.card {
    position: absolute;
    background: rgba(255, 255, 255, 0.15);
    backdrop-filter: blur(15px);
    border: 1px solid rgba(255, 255, 255, 0.25);
    border-radius: 20px;
    padding: 20px;
    display: flex;
    flex-direction: column;
    align-items: center;
    justify-content: center;
    gap: 12px;
    color: white;
    font-weight: 500;
    transition: all 0.3s ease, transform 0.3s ease-out;
    cursor: pointer;
    box-shadow: 0 8px 32px rgba(0, 0, 0, 0.15);
    text-align: center;
    word-wrap: break-word;
    overflow: hidden;
    will-change: transform;
    /* 初始化CSS变量 */
    --float-x: 0px;
    --float-y: 0px;
    --float-z: 0px;
    --float-rotate: 0deg;
    --orbit-x: 0px;
    --orbit-y: 0px;
    --sphere-rotation: 0deg;
    --sphere-scale: 1;
    --sphere-z: 0px;
    /* 应用浮动动画、轨道位置和立体效果 */
    /* transform由各个卡片类控制 */
}

.card:hover {
    background: rgba(255, 255, 255, 0.3);
    box-shadow: 0 20px 60px rgba(0, 0, 0, 0.3);
    z-index: 100 !important;
    border: 2px solid rgba(255, 255, 255, 0.5);
    --hover-scale: 1.1;
}

.card i {
    font-size: 2rem;
    margin-bottom: 10px;
    color: white;
}

.candlestick-icon {
    width: 2rem;
    height: 2rem;
    margin-bottom: 10px;
}

/* 大卡片 - 核心层 */
.card-large {
    width: 140px;
    height: 140px;
    padding: 30px 25px;
    z-index: 30;
    background: rgba(255, 255, 255, 0.2);
    border: 1px solid rgba(255, 255, 255, 0.3);
}

.card-large i {
    font-size: 2.8rem;
}

.card-large .candlestick-icon {
    width: 2.8rem;
    height: 2.8rem;
}

.card-large span {
    font-size: 1rem;
    text-align: center;
    line-height: 1.2;
}

/* 中等卡片 - 中层 */
.card-medium {
    width: 120px;
    height: 120px;
    padding: 25px 20px;
    z-index: 20;
    background: rgba(255, 255, 255, 0.18);
    border: 1px solid rgba(255, 255, 255, 0.28);
}

.card-medium i {
    font-size: 2rem;
}

.card-medium .candlestick-icon {
    width: 2rem;
    height: 2rem;
}

.card-medium span {
    font-size: 0.9rem;
    text-align: center;
    line-height: 1.2;
}

/* 小卡片 - 外层 */
.card-small {
    width: 100px;
    height: 100px;
    padding: 20px 15px;
    z-index: 10;
    background: rgba(255, 255, 255, 0.15);
    border: 1px solid rgba(255, 255, 255, 0.25);
}

.card-small i {
    font-size: 1.6rem;
}

.card-small .candlestick-icon {
    width: 1.6rem;
    height: 1.6rem;
}

.card-small span {
    font-size: 0.85rem;
    text-align: center;
    line-height: 1.2;
}

/* 立体悬浮球定位 - 核心层 */
.card-1 {
    top: 65%;
    left: 65%;
    transform: translate(-50%, -50%) translateZ(20px) translate(var(--float-x), var(--float-y)) translateZ(var(--float-z)) translate(var(--orbit-x), var(--orbit-y)) scale(calc(var(--sphere-scale) * var(--hover-scale, 1))) translateZ(var(--sphere-z));
    animation: float1 8s ease-in-out infinite;
}

.card-2 {
    top: 50%;
    left: 50%;
    transform: translate(-50%, -50%) translateZ(40px) translate(var(--float-x), var(--float-y)) translateZ(var(--float-z)) translate(var(--orbit-x), var(--orbit-y)) scale(calc(var(--sphere-scale) * var(--hover-scale, 1))) translateZ(var(--sphere-z));
    animation: float2 7s ease-in-out infinite;
}

/* 中层定位 - 围绕核心的环形分布 */
.card-3 {
    top: 40%;
    left: 55%;
    transform: translate(-50%, -50%) translate(var(--float-x), var(--float-y)) translateZ(var(--float-z)) translate(var(--orbit-x), var(--orbit-y)) scale(calc(var(--sphere-scale) * var(--hover-scale, 1))) translateZ(var(--sphere-z));
    animation: float3 9s ease-in-out infinite;
}

.card-4 {
    top: 60%;
    left: 45%;
    transform: translate(-50%, -50%) translate(var(--float-x), var(--float-y)) translateZ(var(--float-z)) translate(var(--orbit-x), var(--orbit-y)) scale(calc(var(--sphere-scale) * var(--hover-scale, 1))) translateZ(var(--sphere-z));
    animation: float4 6s ease-in-out infinite;
}

.card-5 {
    top: 45%;
    left: 40%;
    transform: translate(-50%, -50%) translate(var(--float-x), var(--float-y)) translateZ(var(--float-z)) translate(var(--orbit-x), var(--orbit-y)) scale(calc(var(--sphere-scale) * var(--hover-scale, 1))) translateZ(var(--sphere-z));
    animation: float5 8s ease-in-out infinite;
}

.card-6 {
    top: 55%;
    left: 60%;
    transform: translate(-50%, -50%) translate(var(--float-x), var(--float-y)) translateZ(var(--float-z)) translate(var(--orbit-x), var(--orbit-y)) scale(calc(var(--sphere-scale) * var(--hover-scale, 1))) translateZ(var(--sphere-z));
    animation: float6 7s ease-in-out infinite;
}

/* 外层定位 - 小卡片围绕球形分布 */
.card-7 {
    top: 30%;
    left: 50%;
    transform: translate(-50%, -50%) translate(var(--float-x), var(--float-y)) translateZ(var(--float-z)) translate(var(--orbit-x), var(--orbit-y)) scale(calc(var(--sphere-scale) * var(--hover-scale, 1))) translateZ(var(--sphere-z));
    animation: float7 10s ease-in-out infinite;
}

.card-8 {
    top: 70%;
    left: 50%;
    transform: translate(-50%, -50%) translate(var(--float-x), var(--float-y)) translateZ(var(--float-z)) translate(var(--orbit-x), var(--orbit-y)) scale(calc(var(--sphere-scale) * var(--hover-scale, 1))) translateZ(var(--sphere-z));
    animation: float8 9s ease-in-out infinite;
}

.card-9 {
    top: 50%;
    left: 30%;
    transform: translate(-50%, -50%) translate(var(--float-x), var(--float-y)) translateZ(var(--float-z)) translate(var(--orbit-x), var(--orbit-y)) scale(calc(var(--sphere-scale) * var(--hover-scale, 1))) translateZ(var(--sphere-z));
    animation: float9 11s ease-in-out infinite;
}

.card-10 {
    top: 50%;
    left: 70%;
    transform: translate(-50%, -50%) translate(var(--float-x), var(--float-y)) translateZ(var(--float-z)) translate(var(--orbit-x), var(--orbit-y)) scale(calc(var(--sphere-scale) * var(--hover-scale, 1))) translateZ(var(--sphere-z));
    animation: float10 8s ease-in-out infinite;
}

.card-11 {
    top: 35%;
    left: 35%;
    transform: translate(-50%, -50%) translate(var(--float-x), var(--float-y)) translateZ(var(--float-z)) translate(var(--orbit-x), var(--orbit-y)) scale(calc(var(--sphere-scale) * var(--hover-scale, 1))) translateZ(var(--sphere-z));
    animation: float11 12s ease-in-out infinite;
}

.card-12 {
    top: 35%;
    left: 65%;
    transform: translate(-50%, -50%) translate(var(--float-x), var(--float-y)) translateZ(var(--float-z)) translate(var(--orbit-x), var(--orbit-y)) scale(calc(var(--sphere-scale) * var(--hover-scale, 1))) translateZ(var(--sphere-z));
    animation: float12 9s ease-in-out infinite;
}

.card-13 {
    top: 65%;
    left: 35%;
    transform: translate(-50%, -50%) translate(var(--float-x), var(--float-y)) translateZ(var(--float-z)) translate(var(--orbit-x), var(--orbit-y)) scale(calc(var(--sphere-scale) * var(--hover-scale, 1))) translateZ(var(--sphere-z));
    animation: float13 10s ease-in-out infinite;
}

/* 立体悬浮动画 - 使用CSS变量 */
@keyframes float1 {
    0%, 100% { --float-x: 0px; --float-y: 0px; --float-z: 0px; --float-rotate: 0deg; }
    50% { --float-x: 0px; --float-y: -20px; --float-z: 35px; --float-rotate: 5deg; }
}

@keyframes float2 {
    0%, 100% { --float-x: 0px; --float-y: 0px; --float-z: 0px; --float-rotate: 0deg; }
    50% { --float-x: 0px; --float-y: -25px; --float-z: 35px; --float-rotate: -5deg; }
}

@keyframes float3 {
    0%, 100% { --float-x: 0px; --float-y: 0px; --float-z: 0px; --float-rotate: 0deg; }
    50% { --float-x: 0px; --float-y: -35px; --float-z: 45px; --float-rotate: 3deg; }
}

@keyframes float4 {
    0%, 100% { --float-x: 0px; --float-y: 0px; --float-z: 0px; --float-rotate: 0deg; }
    50% { --float-x: 0px; --float-y: -20px; --float-z: 30px; --float-rotate: -3deg; }
}

@keyframes float5 {
    0%, 100% { --float-x: 0px; --float-y: 0px; --float-z: 0px; --float-rotate: 0deg; }
    50% { --float-x: 0px; --float-y: -28px; --float-z: 38px; --float-rotate: 4deg; }
}

@keyframes float6 {
    0%, 100% { --float-x: 0px; --float-y: 0px; --float-z: 0px; --float-rotate: 0deg; }
    50% { --float-x: 0px; --float-y: -22px; --float-z: 32px; --float-rotate: -2deg; }
}

@keyframes float7 {
    0%, 100% { --float-x: 0px; --float-y: 0px; --float-z: 0px; --float-rotate: 0deg; }
    50% { --float-x: 0px; --float-y: -15px; --float-z: 28px; --float-rotate: 6deg; }
}

@keyframes float8 {
    0%, 100% { --float-x: 0px; --float-y: 0px; --float-z: 0px; --float-rotate: 0deg; }
    50% { --float-x: 0px; --float-y: -18px; --float-z: 30px; --float-rotate: -4deg; }
}

@keyframes float9 {
    0%, 100% { --float-x: 0px; --float-y: 0px; --float-z: 0px; --float-rotate: 0deg; }
    50% { --float-x: 0px; --float-y: -12px; --float-z: 26px; --float-rotate: 7deg; }
}

@keyframes float10 {
    0%, 100% { --float-x: 0px; --float-y: 0px; --float-z: 0px; --float-rotate: 0deg; }
    50% { --float-x: 0px; --float-y: -16px; --float-z: 29px; --float-rotate: -6deg; }
}

@keyframes float11 {
    0%, 100% { --float-x: 0px; --float-y: 0px; --float-z: 0px; --float-rotate: 0deg; }
    50% { --float-x: 0px; --float-y: -10px; --float-z: 27px; --float-rotate: 5deg; }
}

@keyframes float12 {
    0%, 100% { --float-x: 0px; --float-y: 0px; --float-z: 0px; --float-rotate: 0deg; }
    50% { --float-x: 0px; --float-y: -14px; --float-z: 28px; --float-rotate: -3deg; }
}

@keyframes float13 {
    0%, 100% { --float-x: 0px; --float-y: 0px; --float-z: 0px; --float-rotate: 0deg; }
    50% { --float-x: 0px; --float-y: -8px; --float-z: 25px; --float-rotate: 4deg; }
}

/* 通用区块样式 */
section {
    padding: 100px 0;
}

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

.section-title {
    font-size: 2.5rem;
    font-weight: 700;
    margin-bottom: 20px;
    background: linear-gradient(135deg, #27ae60 0%, #2ecc71 100%);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
}

.section-subtitle {
    font-size: 1.2rem;
    color: #666;
    max-width: 600px;
    margin: 0 auto;
}

/* 关于我们 */
.about {
    background: #f8f9fa;
}

.about-content {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 60px;
    align-items: center;
}

.about-text p {
    font-size: 1.1rem;
    color: #555;
    margin-bottom: 20px;
    line-height: 1.8;
}

.stats {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: 30px;
    margin-top: 40px;
}

.stat {
    text-align: center;
}

.stat-number {
    font-size: 2.5rem;
    font-weight: 700;
    color: #27ae60;
    margin-bottom: 10px;
}

.stat-label {
    color: #666;
    font-weight: 500;
}

.tech-grid {
    display: grid;
    grid-template-columns: repeat(2, 1fr);
    gap: 20px;
}

.tech-item {
    background: white;
    padding: 30px;
    border-radius: 15px;
    text-align: center;
    box-shadow: 0 10px 30px rgba(0, 0, 0, 0.1);
    transition: all 0.3s ease;
}

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

.tech-item i {
    font-size: 2.5rem;
    color: #27ae60;
    margin-bottom: 15px;
}

.tech-item span {
    font-weight: 600;
    color: #333;
}

/* 产品方案 */
.products-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(350px, 1fr));
    gap: 30px;
}

.product-card {
    background: white;
    padding: 40px 30px;
    border-radius: 20px;
    box-shadow: 0 10px 30px rgba(0, 0, 0, 0.1);
    transition: all 0.3s ease;
    border: 1px solid rgba(0, 0, 0, 0.05);
}

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

.product-icon {
    width: 80px;
    height: 80px;
    background: linear-gradient(135deg, #27ae60 0%, #2ecc71 100%);
    border-radius: 20px;
    display: flex;
    align-items: center;
    justify-content: center;
    margin-bottom: 25px;
}

.product-icon i {
    font-size: 2rem;
    color: white;
}

.product-card h3 {
    font-size: 1.5rem;
    font-weight: 600;
    margin-bottom: 15px;
    color: #333;
}

.product-card p {
    color: #666;
    margin-bottom: 20px;
    line-height: 1.6;
}

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

.product-card li {
    padding: 8px 0;
    color: #555;
    position: relative;
    padding-left: 20px;
}

.product-card li::before {
    content: '✓';
    position: absolute;
    left: 0;
    color: #27ae60;
    font-weight: bold;
}

/* 服务案例 */
.cases {
    background: #f8f9fa;
}

.cases-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(350px, 1fr));
    gap: 30px;
}

.case-card {
    background: white;
    border-radius: 20px;
    overflow: hidden;
    box-shadow: 0 10px 30px rgba(0, 0, 0, 0.1);
    transition: all 0.3s ease;
}

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

.case-image {
    height: 200px;
    background: linear-gradient(135deg, #27ae60 0%, #2ecc71 100%);
    position: relative;
    display: flex;
    align-items: center;
    justify-content: center;
}

.case-overlay {
    color: white;
    font-size: 3rem;
    opacity: 0.8;
}

.case-content {
    padding: 30px;
}

.case-content h3 {
    font-size: 1.3rem;
    font-weight: 600;
    margin-bottom: 15px;
    color: #333;
}

.case-content p {
    color: #666;
    margin-bottom: 20px;
    line-height: 1.6;
}

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

.tag {
    background: #f0f0f0;
    color: #27ae60;
    padding: 5px 15px;
    border-radius: 20px;
    font-size: 0.9rem;
    font-weight: 500;
}

/* 联系我们 */
.contact-content {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 60px;
}

.contact-info {
    display: flex;
    flex-direction: column;
    gap: 30px;
}

.contact-item {
    display: flex;
    align-items: flex-start;
    gap: 20px;
}

.contact-item i {
    font-size: 1.5rem;
    color: #27ae60;
    margin-top: 5px;
}

.contact-item h4 {
    font-size: 1.1rem;
    font-weight: 600;
    margin-bottom: 5px;
    color: #333;
}

.contact-item p {
    color: #666;
}

.contact-form {
    background: white;
    padding: 40px;
    border-radius: 20px;
    box-shadow: 0 10px 30px rgba(0, 0, 0, 0.1);
}

.form-group {
    margin-bottom: 20px;
}

.form-group input,
.form-group textarea {
    width: 100%;
    padding: 15px;
    border: 2px solid #f0f0f0;
    border-radius: 10px;
    font-size: 1rem;
    transition: all 0.3s ease;
    font-family: inherit;
}

.form-group input:focus,
.form-group textarea:focus {
    outline: none;
    border-color: #27ae60;
    box-shadow: 0 0 0 3px rgba(39, 174, 96, 0.1);
}

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

/* 页脚 */
.footer {
    background: #1a1a1a;
    color: white;
    padding: 60px 0 20px;
}

.footer-content {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(250px, 1fr));
    gap: 40px;
    margin-bottom: 40px;
}

.footer-section h3,
.footer-section h4 {
    margin-bottom: 20px;
    color: white;
}

.footer-section p {
    color: #ccc;
    line-height: 1.6;
}

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

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

.footer-section ul li a {
    color: #ccc;
    text-decoration: none;
    transition: color 0.3s ease;
}

.footer-section ul li a:hover {
    color: #27ae60;
}

.social-links {
    display: flex;
    gap: 15px;
    margin-top: 20px;
}

.social-links a {
    width: 40px;
    height: 40px;
    background: #333;
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    color: white;
    text-decoration: none;
    transition: all 0.3s ease;
}

.social-links a:hover {
    background: #27ae60;
    transform: translateY(-3px);
}

.footer-bottom {
    border-top: 1px solid #333;
    padding-top: 20px;
    text-align: center;
    color: #ccc;
}

.icp-info {
    margin-top: 10px;
    font-size: 0.85rem;
    color: #999;
    line-height: 1.6;
}

.icp-info span {
    display: block;
    margin: 2px 0;
}

.icp-info span:first-child {
    margin-bottom: 5px;
}

/* 资质证书展示 */
.certificates-section {
    margin-top: 60px;
    text-align: center;
    background-color: #f8f9fa;
    padding: 40px 0;
    border-radius: 15px;
}

.certificates-title {
    font-size: 2rem;
    font-weight: 600;
    margin-bottom: 30px;
    background: linear-gradient(135deg, #27ae60 0%, #2ecc71 100%);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
}

.certificates-grid {
    display: flex !important;
    justify-content: center;
    gap: 30px;
    flex-wrap: wrap;
    margin: 0 auto;
    max-width: 1000px;
}

.certificate-item {
    flex: 0 0 auto;
    max-width: 300px;
    min-width: 250px;
    border-radius: 12px;
    overflow: hidden;
    box-shadow: 0 8px 25px rgba(0, 0, 0, 0.1);
    transition: transform 0.3s ease, box-shadow 0.3s ease;
    background: white;
    border: 2px solid #e9ecef;
}

.certificate-item:hover {
    transform: translateY(-5px);
    box-shadow: 0 15px 35px rgba(0, 0, 0, 0.15);
}

.certificate-image {
    width: 100%;
    height: 200px;
    overflow: hidden;
}

.certificate-image img {
    width: 100% !important;
    height: 100% !important;
    object-fit: cover;
    transition: transform 0.3s ease;
    display: block;
}

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

/* 社会责任部分样式 */
.social-responsibility-section {
    margin-top: 80px;
    padding: 60px 0;
    background: linear-gradient(135deg, rgba(39, 174, 96, 0.05) 0%, rgba(46, 204, 113, 0.05) 100%);
    border-radius: 20px;
}

.social-responsibility-title {
    font-size: 2.2rem;
    font-weight: 700;
    text-align: center;
    margin-bottom: 50px;
    background: linear-gradient(135deg, #27ae60 0%, #2ecc71 100%);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
}

.responsibility-intro {
    text-align: center;
    max-width: 800px;
    margin: 0 auto 50px;
}

.responsibility-intro p {
    font-size: 1.1rem;
    line-height: 1.7;
    color: #5a6c7d;
    margin: 0;
}

.responsibility-grid {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: 30px;
    margin-top: 40px;
}

.responsibility-card {
    background: rgba(255, 255, 255, 0.95);
    border-radius: 16px;
    padding: 30px;
    box-shadow: 0 8px 32px rgba(39, 174, 96, 0.1);
    border: 1px solid rgba(39, 174, 96, 0.1);
    transition: all 0.3s ease;
    position: relative;
    overflow: hidden;
}

.responsibility-card::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    height: 4px;
    background: linear-gradient(135deg, #27ae60 0%, #2ecc71 100%);
    transform: scaleX(0);
    transition: transform 0.3s ease;
}

.responsibility-card:hover {
    transform: translateY(-8px);
    box-shadow: 0 16px 48px rgba(39, 174, 96, 0.2);
    border-color: rgba(39, 174, 96, 0.2);
}

.responsibility-card:hover::before {
    transform: scaleX(1);
}

.responsibility-icon {
    width: 60px;
    height: 60px;
    background: linear-gradient(135deg, #27ae60 0%, #2ecc71 100%);
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    margin-bottom: 20px;
    transition: all 0.3s ease;
}

.responsibility-card:hover .responsibility-icon {
    transform: scale(1.1) rotate(5deg);
    box-shadow: 0 8px 24px rgba(39, 174, 96, 0.3);
}

.responsibility-icon i {
    font-size: 1.8rem;
    color: white;
}

.responsibility-card h4 {
    font-size: 1.4rem;
    font-weight: 600;
    margin-bottom: 15px;
    color: #2c3e50;
    transition: color 0.3s ease;
}

.responsibility-card:hover h4 {
    color: #27ae60;
}

.responsibility-card p {
    font-size: 0.95rem;
    line-height: 1.6;
    color: #5a6c7d;
    margin: 0;
}

/* 响应式设计 */
@media (max-width: 1440px) {
    .hero-content {
        grid-template-columns: 1.1fr 0.9fr;
        gap: 60px;
        padding: 0 30px;
        max-width: 1200px;
    }
    
    .hero-title {
        font-size: 3.2rem;
        min-width: 550px;
    }
    
    .floating-cards {
        height: 800px;
        width: 800px;
        transform: scale(0.95);
        margin: 0 auto;
    }
}

@media (max-width: 1024px) {
    .hero-content {
        grid-template-columns: 1fr 0.8fr;
        gap: 50px;
        padding: 0 25px;
        max-width: 1000px;
    }
    
    .hero-title {
        font-size: 3rem;
        min-width: 500px;
    }
    
    .floating-cards {
        height: 750px;
        width: 750px;
        transform: scale(0.9);
    }
    
    .responsibility-grid {
        grid-template-columns: repeat(2, 1fr);
        gap: 25px;
    }
}

@media (max-width: 768px) {
    .language-switch {
        margin-left: 10px;
    }
    
    .lang-btn {
        padding: 6px 10px;
        font-size: 0.8rem;
    }
    
    .nav-menu {
        position: fixed;
        left: -100%;
        top: 70px;
        flex-direction: column;
        background-color: white;
        width: 100%;
        text-align: center;
        transition: 0.3s;
        box-shadow: 0 10px 27px rgba(0, 0, 0, 0.05);
        padding: 20px 0;
    }

    .nav-menu.active {
        left: 0;
    }

    .nav-toggle {
        display: flex;
    }

    .hero-content {
        grid-template-columns: 1fr;
        text-align: center;
        gap: 40px;
        padding: 0 40px;
        max-width: 600px;
        margin: 0 auto;
    }
    
    .floating-cards {
        height: 500px;
        width: 500px;
        margin: 0 auto;
        perspective: 800px;
        transform: scale(0.9);
        /* 移动端3D效果优化 */
        transform-style: preserve-3d;
    }

    .hero-title {
        font-size: 2.5rem;
        min-width: auto;
        white-space: normal;
    }

    .hero-buttons {
        justify-content: center;
        flex-wrap: wrap;
    }

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

    .stats {
        grid-template-columns: 1fr;
        gap: 20px;
    }

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

    .floating-cards {
        height: 600px;
        width: 600px;
        perspective: 1000px;
    }

    .card {
        padding: 15px;
        font-size: 0.9rem;
    }

    .card i {
        font-size: 1.5rem;
    }
    
    /* 移动端卡片大小调整 */
    .card-large {
        width: 120px;
        height: 120px;
        padding: 25px 20px;
    }
    
    .card-large span {
        font-size: 0.9rem;
    }
    
    .card-medium {
        width: 100px;
        height: 100px;
        padding: 20px 15px;
    }
    
    .card-medium span {
        font-size: 0.8rem;
    }
    
    .card-small {
        width: 80px;
        height: 80px;
        padding: 15px 10px;
    }
    
    .card-small span {
        font-size: 0.75rem;
    }
    
    .responsibility-grid {
        grid-template-columns: 1fr;
        gap: 25px;
    }
    
    .responsibility-intro {
        margin-bottom: 40px;
    }
    
    .responsibility-intro p {
        font-size: 1rem;
    }
    
    .responsibility-card {
        padding: 30px;
    }
    
    .social-responsibility-title {
        font-size: 1.8rem;
    }
}

@media (max-width: 480px) {
    .hero-content {
        padding: 0 20px;
        max-width: 400px;
    }
    
    .hero-title {
        font-size: 2rem;
        min-width: auto;
        white-space: normal;
    }

    .section-title {
        font-size: 2rem;
    }

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

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

    .contact-form {
        padding: 20px;
    }
    
    .floating-cards {
        height: 400px;
        width: 400px;
        transform: scale(0.8);
    }
    
    .responsibility-grid {
        grid-template-columns: 1fr;
        gap: 20px;
    }
    
    .responsibility-intro {
        margin-bottom: 30px;
    }
    
    .responsibility-intro p {
        font-size: 0.95rem;
    }
    
    .responsibility-card {
        padding: 25px;
    }
    
    .responsibility-icon {
        width: 50px;
        height: 50px;
    }
    
    .responsibility-icon i {
        font-size: 1.5rem;
    }
    
    .responsibility-card h4 {
        font-size: 1.2rem;
    }
    
    .responsibility-card p {
        font-size: 0.9rem;
    }
    
    .certificates-grid {
        gap: 15px;
    }
    
    .certificate-item {
        max-width: 200px;
    }
    
    .certificate-image {
        height: 120px;
    }
    
    .global-clients-title {
        font-size: 2rem;
    }
    
    .global-map {
        height: 400px;
    }
    
    .node-icon {
        width: 40px;
        height: 40px;
        font-size: 1rem;
    }
    
    .center-node .node-icon {
        width: 50px;
        height: 50px;
        font-size: 1.3rem;
    }
    
    .node-label {
        font-size: 0.7rem;
        padding: 2px 4px;
        min-width: 40px;
        max-width: 60px;
        overflow: hidden;
        text-overflow: ellipsis;
    }
}

/* 全球客户展示 */
.global-clients-section {
    margin-top: 80px;
    text-align: center;
    padding: 60px 0;
    background: linear-gradient(135deg, #f8f9fa 0%, #e9ecef 100%);
    border-radius: 20px;
}

.global-clients-title {
    font-size: 2.5rem;
    font-weight: 700;
    margin-bottom: 15px;
    background: linear-gradient(135deg, #27ae60 0%, #2ecc71 100%);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
}

.global-clients-subtitle {
    font-size: 1.1rem;
    color: #666;
    margin-bottom: 50px;
    max-width: 600px;
    margin-left: auto;
    margin-right: auto;
}

.global-map {
    position: relative;
    width: 100%;
    height: 500px;
    max-width: 1000px;
    margin: 0 auto;
    overflow: hidden;
    background-image: url('data:image/svg+xml,<svg xmlns="http://www.w3.org/2000/svg" viewBox="0 0 1000 500" fill="%23f8f9fa"><path d="M100,200 Q150,180 200,200 T300,200 Q350,180 400,200 T500,200 Q550,180 600,200 T700,200 Q750,180 800,200 T900,200" stroke="%23e9ecef" stroke-width="1" fill="none"/><path d="M150,150 Q200,130 250,150 T350,150 Q400,130 450,150 T550,150 Q600,130 650,150 T750,150 Q800,130 850,150 T950,150" stroke="%23e9ecef" stroke-width="1" fill="none"/><path d="M50,250 Q100,230 150,250 T250,250 Q300,230 350,250 T450,250 Q500,230 550,250 T650,250 Q700,230 750,250 T850,250 Q900,230 950,250" stroke="%23e9ecef" stroke-width="1" fill="none"/><path d="M80,300 Q130,280 180,300 T280,300 Q330,280 380,300 T480,300 Q530,280 580,300 T680,300 Q730,280 780,300 T880,300 Q930,280 980,300" stroke="%23e9ecef" stroke-width="1" fill="none"/><path d="M120,350 Q170,330 220,350 T320,350 Q370,330 420,350 T520,350 Q570,330 620,350 T720,350 Q770,330 820,350 T920,350" stroke="%23e9ecef" stroke-width="1" fill="none"/><circle cx="200" cy="180" r="2" fill="%23dee2e6"/><circle cx="400" cy="200" r="2" fill="%23dee2e6"/><circle cx="600" cy="220" r="2" fill="%23dee2e6"/><circle cx="800" cy="240" r="2" fill="%23dee2e6"/><circle cx="300" cy="150" r="2" fill="%23dee2e6"/><circle cx="500" cy="170" r="2" fill="%23dee2e6"/><circle cx="700" cy="190" r="2" fill="%23dee2e6"/><circle cx="900" cy="210" r="2" fill="%23dee2e6"/><circle cx="250" cy="250" r="2" fill="%23dee2e6"/><circle cx="450" cy="270" r="2" fill="%23dee2e6"/><circle cx="650" cy="290" r="2" fill="%23dee2e6"/><circle cx="850" cy="310" r="2" fill="%23dee2e6"/><circle cx="350" cy="320" r="2" fill="%23dee2e6"/><circle cx="550" cy="340" r="2" fill="%23dee2e6"/><circle cx="750" cy="360" r="2" fill="%23dee2e6"/></svg>');
    background-size: cover;
    background-position: center;
    background-repeat: no-repeat;
    border-radius: 15px;
    box-shadow: inset 0 0 20px rgba(0, 0, 0, 0.05);
}

.connection-lines {
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    z-index: 2;
}

.connection-svg {
    width: 100%;
    height: 100%;
    position: absolute;
    top: 0;
    left: 0;
}

.connection-line {
    stroke-dasharray: 1000;
    stroke-dashoffset: 1000;
    animation: drawLine 6s ease-in-out infinite;
    stroke-linecap: round;
    filter: drop-shadow(0 1px 2px rgba(39, 174, 96, 0.3));
}

.connection-line:nth-child(1) { animation-delay: 0.3s; }
.connection-line:nth-child(2) { animation-delay: 0.6s; }
.connection-line:nth-child(3) { animation-delay: 0.9s; }
.connection-line:nth-child(4) { animation-delay: 1.2s; }
.connection-line:nth-child(5) { animation-delay: 1.5s; }
.connection-line:nth-child(6) { animation-delay: 1.8s; }
.connection-line:nth-child(7) { animation-delay: 2.1s; }
.connection-line:nth-child(8) { animation-delay: 2.4s; }
.connection-line:nth-child(9) { animation-delay: 2.7s; }
.connection-line:nth-child(10) { animation-delay: 3s; }

@keyframes drawLine {
    0% {
        stroke-dashoffset: 1000;
    }
    50% {
        stroke-dashoffset: 0;
    }
    100% {
        stroke-dashoffset: 1000;
    }
}

.country-nodes {
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    z-index: 3;
}

.country-node {
    position: absolute;
    transform: translate(-50%, -50%);
    display: flex;
    flex-direction: column;
    align-items: center;
    cursor: pointer;
    transition: all 0.3s ease;
    animation: nodeAppear 0.8s ease-out forwards;
    opacity: 0;
    transform: translate(-50%, -50%) scale(0);
}

/* 国家节点位置 - 与SVG连接线端点精确匹配 */
.center-node { top: 50%; left: 50%; }  /* 中国 - 中心节点 */

/* 其他国家节点位置 */
.country-node[data-country="英国"] { top: 25%; left: 20%; }
.country-node[data-country="迪拜"] { top: 35%; left: 35%; }
.country-node[data-country="印度"] { top: 45%; left: 25%; }
.country-node[data-country="新加坡"] { top: 55%; left: 40%; }
.country-node[data-country="马来西亚"] { top: 60%; left: 45%; }
.country-node[data-country="印度尼西亚"] { top: 70%; left: 50%; }
.country-node[data-country="菲律宾"] { top: 65%; left: 65%; }
.country-node[data-country="越南"] { top: 55%; left: 55%; }
.country-node[data-country="泰国"] { top: 50%; left: 60%; }
.country-node[data-country="拉丁美洲"] { top: 60%; left: 80%; }

.country-node:nth-child(1) { animation-delay: 0.1s; }
.country-node:nth-child(2) { animation-delay: 0.2s; }
.country-node:nth-child(3) { animation-delay: 0.3s; }
.country-node:nth-child(4) { animation-delay: 0.4s; }
.country-node:nth-child(5) { animation-delay: 0.5s; }
.country-node:nth-child(6) { animation-delay: 0.6s; }
.country-node:nth-child(7) { animation-delay: 0.7s; }
.country-node:nth-child(8) { animation-delay: 0.8s; }
.country-node:nth-child(9) { animation-delay: 0.9s; }
.country-node:nth-child(10) { animation-delay: 1s; }
.country-node:nth-child(11) { animation-delay: 1.1s; }

@keyframes nodeAppear {
    to {
        opacity: 1;
        transform: translate(-50%, -50%) scale(1);
    }
}

.country-node:hover {
    transform: translate(-50%, -50%) scale(1.1);
}

.node-icon {
    width: 50px;
    height: 50px;
    background: linear-gradient(135deg, #27ae60, #2ecc71);
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    color: white;
    font-size: 1.2rem;
    box-shadow: 0 4px 15px rgba(39, 174, 96, 0.3);
    margin-bottom: 8px;
    transition: all 0.3s ease;
    position: relative;
    z-index: 3;
}

.country-node:hover .node-icon {
    background: linear-gradient(135deg, #2ecc71, #27ae60);
    box-shadow: 0 6px 20px rgba(39, 174, 96, 0.4);
    transform: scale(1.1);
}

.center-node .node-icon {
    width: 60px;
    height: 60px;
    font-size: 1.5rem;
    background: linear-gradient(135deg, #e74c3c, #c0392b);
    box-shadow: 0 6px 20px rgba(231, 76, 60, 0.3);
}

.center-node:hover .node-icon {
    background: linear-gradient(135deg, #c0392b, #e74c3c);
    box-shadow: 0 8px 25px rgba(231, 76, 60, 0.4);
}

.node-label {
    font-size: 0.9rem;
    font-weight: 600;
    color: #333;
    text-align: center;
    white-space: nowrap;
    background: rgba(255, 255, 255, 0.95);
    padding: 4px 8px;
    border-radius: 12px;
    box-shadow: 0 2px 8px rgba(0, 0, 0, 0.1);
    transition: all 0.3s ease;
    position: relative;
    z-index: 3;
    min-width: 60px;
}

.country-node:hover .node-label {
    background: rgba(255, 255, 255, 1);
    box-shadow: 0 4px 12px rgba(0, 0, 0, 0.15);
    transform: translateY(-2px);
}

/* 脉冲动画 */
.country-node::after {
    content: '';
    position: absolute;
    top: 50%;
    left: 50%;
    width: 60px;
    height: 60px;
    background: rgba(39, 174, 96, 0.2);
    border-radius: 50%;
    transform: translate(-50%, -50%);
    animation: pulse 2s infinite;
    z-index: -1;
}

.center-node::after {
    width: 80px;
    height: 80px;
    background: rgba(231, 76, 60, 0.2);
}

@keyframes pulse {
    0% {
        transform: translate(-50%, -50%) scale(0.8);
        opacity: 1;
    }
    100% {
        transform: translate(-50%, -50%) scale(2);
        opacity: 0;
    }
}

/* 滚动动画 */
.fade-in {
    opacity: 0;
    transform: translateY(30px);
    transition: all 0.6s ease;
}

.fade-in.visible {
    opacity: 1;
    transform: translateY(0);
}

/* 加载动画 */
.loading {
    opacity: 0;
    animation: fadeIn 1s ease forwards;
}

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

/* 移动端国家节点位置调整 */
@media (max-width: 768px) {
    .country-node[data-country="英国"] { top: 20%; left: 15%; }
    .country-node[data-country="迪拜"] { top: 30%; left: 30%; }
    .country-node[data-country="印度"] { top: 40%; left: 20%; }
    .country-node[data-country="新加坡"] { top: 50%; left: 35%; }
    .country-node[data-country="马来西亚"] { top: 55%; left: 40%; }
    .country-node[data-country="印度尼西亚"] { top: 65%; left: 45%; }
    .country-node[data-country="菲律宾"] { top: 60%; left: 60%; }
    .country-node[data-country="越南"] { top: 50%; left: 50%; }
    .country-node[data-country="泰国"] { top: 45%; left: 55%; }
    .country-node[data-country="拉丁美洲"] { top: 55%; left: 75%; }
    
    /* 移动端国家名字标签优化 */
    .node-label {
        font-size: 0.8rem;
        padding: 3px 6px;
        min-width: 50px;
        max-width: 80px;
        overflow: hidden;
        text-overflow: ellipsis;
    }
    
    .icp-info {
        font-size: 0.75rem;
        margin-top: 8px;
    }
    
    .icp-info span {
        margin: 1px 0;
    }
}