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

body {
    font-family: 'Microsoft YaHei', 'Segoe UI', Tahoma, Geneva, Verdana, sans-serif;
    line-height: 1.6;
    color: #333;
    overflow-x: hidden;
}

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

.nav-container {
    max-width: 1200px;
    margin: 0 auto;
    display: flex;
    justify-content: space-between;
    align-items: center;
    padding: 0 2rem;
}

.logo {
    font-size: 1.8rem;
    font-weight: bold;
    background: linear-gradient(135deg, #667eea 0%, #764ba2 100%);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
}

.nav-menu {
    display: flex;
    list-style: none;
    gap: 2rem;
}

.nav-menu a {
    text-decoration: none;
    color: #333;
    font-weight: 500;
    transition: color 0.3s ease;
    padding: 0.5rem 1rem;
    border-radius: 8px;
}

.nav-menu a:hover {
    color: #667eea;
    background: rgba(102, 126, 234, 0.1);
}

/* 下拉菜单样式 */
.dropdown {
    position: relative;
}

.dropdown-menu {
    position: absolute;
    top: 100%;
    left: 0;
    background: white;
    box-shadow: 0 5px 15px rgba(0,0,0,0.1);
    border-radius: 12px;
    padding: 0.5rem 0;
    min-width: 180px;
    opacity: 0;
    visibility: hidden;
    transform: translateY(10px);
    transition: all 0.3s ease;
    list-style: none;
    z-index: 1001;
}

.dropdown:hover .dropdown-menu {
    opacity: 1;
    visibility: visible;
    transform: translateY(0);
}

.dropdown-menu li {
    width: 100%;
}

.dropdown-menu a {
    display: block;
    padding: 0.7rem 1.5rem;
    color: #333;
    text-decoration: none;
    transition: all 0.2s;
    font-size: 0.95rem;
    white-space: nowrap;
    text-align: left;
    border-radius: 0;
}

.dropdown-menu a:hover {
    background: rgba(102, 126, 234, 0.1);
    color: #667eea;
}

.dropdown-menu a.active {
    background: rgba(102, 126, 234, 0.1);
    color: #667eea;
}

/* 移动端汉堡菜单 */
.mobile-menu-toggle {
    display: none;
    flex-direction: column;
    cursor: pointer;
    padding: 0.5rem;
}

.mobile-menu-toggle span {
    width: 25px;
    height: 3px;
    background: #333;
    margin: 3px 0;
    transition: 0.3s;
    border-radius: 2px;
}

.mobile-menu-toggle.active span:nth-child(1) {
    transform: rotate(-45deg) translate(-5px, 6px);
}

.mobile-menu-toggle.active span:nth-child(2) {
    opacity: 0;
}

.mobile-menu-toggle.active span:nth-child(3) {
    transform: rotate(45deg) translate(-5px, -6px);
}

.cta-btn {
    background: linear-gradient(135deg, #667eea 0%, #764ba2 100%);
    color: white;
    padding: 0.8rem 1.5rem;
    border: none;
    border-radius: 25px;
    cursor: pointer;
    font-weight: 600;
    transition: transform 0.3s ease;
    text-decoration: none;
    display: inline-block;
}

.cta-btn:hover {
    transform: translateY(-2px);
    box-shadow: 0 10px 20px rgba(102, 126, 234, 0.3);
}

.desktop-only {
    display: inline-flex;
    align-items: center;
}

/* 首屏区域 */
.hero {
    min-height: 100vh;
    background: linear-gradient(135deg, #667eea 0%, #764ba2 100%);
    display: flex;
    align-items: center;
    position: relative;
    overflow: hidden;
}

.hero::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    background: url('data:image/svg+xml,<svg xmlns="http://www.w3.org/2000/svg" viewBox="0 0 1000 1000"><defs><radialGradient id="a" cx="50%" cy="50%" r="50%"><stop offset="0%" stop-color="%23ffffff" stop-opacity="0.1"/><stop offset="100%" stop-color="%23ffffff" stop-opacity="0"/></radialGradient></defs><circle cx="200" cy="200" r="100" fill="url(%23a)"/><circle cx="800" cy="300" r="150" fill="url(%23a)"/><circle cx="400" cy="700" r="120" fill="url(%23a)"/></svg>') no-repeat center center;
    background-size: cover;
    opacity: 0.3;
}

.hero-container {
    max-width: 1200px;
    margin: 0 auto;
    padding: 0 2rem;
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 4rem;
    align-items: center;
    position: relative;
    z-index: 2;
}

#home.hero .hero-container {
    grid-template-columns: 1fr;
    text-align: center;
    gap: 2.5rem;
}

#home.hero .hero-intro .description {
    max-width: 820px;
    margin-left: auto;
    margin-right: auto;
}

#home.hero .hero-buttons {
    justify-content: center;
}

#home.hero .hero-highlights {
    display: grid;
    grid-template-columns: repeat(2, minmax(0, 1fr));
    gap: 1rem;
    justify-items: stretch;
    margin-left: auto;
    margin-right: auto;
}

#home.hero .highlight-item {
    min-width: 0;
    width: 100%;
}

#home.hero .highlight-item.highlight-wide {
    grid-column: 1 / -1;
}

#home.hero .hero-container.hero-container-split {
    grid-template-columns: minmax(0, 1fr) minmax(0, 1.15fr);
    text-align: left;
    gap: 2rem;
    align-items: start;
    max-width: 1400px;
}

#home.hero .hero-container.hero-container-split .hero-intro {
    grid-column: 1 / -1;
}

#home.hero .hero-container.hero-container-split .hero-intro .description {
    max-width: none;
    margin-left: 0;
    margin-right: 0;
}

#home.hero .hero-container.hero-container-split .hero-buttons {
    justify-content: flex-start;
}

#home.hero .hero-container.hero-container-split .hero-highlights {
    margin-left: 0;
    margin-right: 0;
    grid-template-columns: repeat(2, minmax(0, 1fr));
}

#home.hero .hero-container.hero-container-split .highlight-item.highlight-wide {
    grid-column: 1 / -1;
}

.home-diagram iframe {
    width: 100%;
    height: 720px;
    border: 0;
    border-radius: 0;
    box-shadow: none;
    background: transparent;
}

.hero-content h1,
.hero-intro h1 {
    font-size: 4rem;
    font-weight: 900;
    color: white;
    margin-bottom: 1.5rem;
    line-height: 1.2;
}

@media (max-width: 1024px) {
    .hero-content h1,
    .hero-intro h1 {
        font-size: 3.2rem;
    }

    .home-diagram iframe {
        height: 520px;
    }
}

.page-virt .virt-hero {
    min-height: auto;
    padding: 7.5rem 0 5rem;
}

.page-virt .hero-container {
    grid-template-columns: 1fr;
    gap: 2.5rem;
}

.page-virt .hero-content {
    max-width: 980px;
    margin: 0 auto;
}

@media (max-width: 600px) {
    .virt-platform-title {
        font-size: 1.75rem;
        line-height: 1.15;
    }

    .hero-content h1,
    .hero-intro h1 {
        font-size: 2.4rem;
    }

    .page-virt .virt-hero {
        padding: 6.5rem 0 4.25rem;
    }

    .page-virt .hero-container {
        padding: 0 1.25rem;
    }

    .page-virt .container {
        padding: 0 1.25rem;
    }

    .page-virt .hero-content .subtitle {
        font-size: 1.05rem;
        margin-bottom: 1.6rem;
    }

    .page-virt .hero-content .description {
        font-size: 0.98rem;
        margin-bottom: 1.6rem;
    }

    .page-virt .hero-highlights {
        flex-direction: column;
        gap: 0.9rem;
    }

    .page-virt .highlight-item {
        width: 100%;
        min-width: 0;
        padding: 0.9rem 1rem;
    }

    .page-virt .section-title {
        margin-bottom: 2.25rem;
    }

    .page-virt .section-title h2 {
        font-size: 1.8rem;
    }

    .page-virt .section-title p {
        font-size: 1rem;
    }

    .page-virt .feature-grid {
        margin-top: 2.25rem;
    }

    .page-virt .feature-card {
        padding: 1.25rem;
    }

    #home.hero .hero-container.hero-container-split .hero-highlights {
        grid-template-columns: 1fr;
    }

    .home-diagram iframe {
        height: 360px;
    }
}

@media (max-width: 420px) {
    .page-virt .hero-content h1 {
        font-size: 2.05rem;
    }
}

.hero-content .subtitle,
.hero-intro .subtitle {
    font-size: 1.3rem;
    color: rgba(255, 255, 255, 0.9);
    margin-bottom: 3rem;
}

.hero-content .description,
.hero-intro .description {
    font-size: 1.1rem;
    color: rgba(255, 255, 255, 0.8);
    margin-bottom: 2rem;
    line-height: 1.8;
}

/* 核心产品亮点 */
.hero-highlights {
    display: flex;
    gap: 1.5rem;
    margin-bottom: 2rem;
    flex-wrap: wrap;
}

.highlight-item {
    display: flex;
    align-items: center;
    gap: 0.8rem;
    background: rgba(255, 255, 255, 0.1);
    padding: 1rem 1.2rem;
    border-radius: 15px;
    backdrop-filter: blur(10px);
    border: 1px solid rgba(255, 255, 255, 0.2);
    transition: all 0.3s ease;
    flex: 1;
    min-width: 200px;
}

.highlight-item.highlight-wide {
    flex: 1.4;
    min-width: 320px;
}

.highlight-item.highlight-wide .highlight-content h3,
.highlight-item.highlight-wide .highlight-content p {
    white-space: nowrap;
}

.highlight-item.highlight-narrow {
    flex: 0.85;
    min-width: 170px;
}

.highlight-item:hover {
    background: rgba(255, 255, 255, 0.15);
    transform: translateY(-2px);
}

.highlight-icon {
    width: 40px;
    height: 40px;
    background: rgba(255, 255, 255, 0.2);
    border-radius: 10px;
    display: flex;
    align-items: center;
    justify-content: center;
    flex-shrink: 0;
}

.highlight-icon i {
    color: white;
    font-size: 1.2rem;
}

.highlight-content h3 {
    color: white;
    font-size: 1rem;
    margin: 0 0 0.1rem 0;
    font-weight: 600;
}

.highlight-content p {
    color: rgba(255, 255, 255, 0.8);
    font-size: 0.85rem;
    line-height: 1.3;
    margin: 0;
}

/* 数据统计 */
.hero-stats {
    display: flex;
    gap: 2rem;
    margin-bottom: 2.5rem;
    justify-content: flex-start;
}

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

.stat-number {
    font-size: 2.5rem;
    font-weight: bold;
    color: white;
    line-height: 1;
    margin-bottom: 0.5rem;
}

.stat-label {
    font-size: 0.9rem;
    color: rgba(255, 255, 255, 0.8);
    text-transform: uppercase;
    letter-spacing: 0.5px;
}

.hero-buttons {
    display: flex;
    gap: 1rem;
    flex-wrap: wrap;
}

.btn-primary {
    background: white;
    color: #667eea;
    padding: 1rem 2rem;
    border: none;
    border-radius: 30px;
    font-weight: 600;
    cursor: pointer;
    transition: all 0.3s ease;
    text-decoration: none;
    display: inline-block;
}

.btn-secondary {
    background: transparent;
    color: white;
    padding: 1rem 2rem;
    border: 2px solid white;
    border-radius: 30px;
    font-weight: 600;
    cursor: pointer;
    transition: all 0.3s ease;
    text-decoration: none;
    display: inline-block;
}

.btn-primary:hover {
    transform: translateY(-3px);
    box-shadow: 0 15px 30px rgba(0, 0, 0, 0.2);
}

.btn-secondary:hover {
    background: white;
    color: #667eea;
}

.hero-visual {
    display: flex;
    justify-content: center;
    align-items: center;
}

.ai-animation {
    width: 400px;
    height: 400px;
    position: relative;
}

.neural-network {
    width: 100%;
    height: 100%;
    background: radial-gradient(circle, rgba(255,255,255,0.1) 0%, transparent 70%);
    border-radius: 50%;
    position: relative;
    animation: pulse 3s ease-in-out infinite;
}

@keyframes pulse {
    0%, 100% { transform: scale(1); }
    50% { transform: scale(1.05); }
}

.node {
    position: absolute;
    width: 12px;
    height: 12px;
    background: white;
    border-radius: 50%;
    animation: glow 2s ease-in-out infinite alternate;
}

@keyframes glow {
    from { box-shadow: 0 0 5px rgba(255,255,255,0.5); }
    to { box-shadow: 0 0 20px rgba(255,255,255,0.8); }
}

.node:nth-child(1) { top: 20%; left: 50%; animation-delay: 0s; }
.node:nth-child(2) { top: 40%; left: 20%; animation-delay: 0.5s; }
.node:nth-child(3) { top: 40%; left: 80%; animation-delay: 1s; }
.node:nth-child(4) { top: 60%; left: 30%; animation-delay: 1.5s; }
.node:nth-child(5) { top: 60%; left: 70%; animation-delay: 2s; }
.node:nth-child(6) { bottom: 20%; left: 50%; animation-delay: 2.5s; }

/* 通用区域样式 */
.ai-solutions.section {
    padding: 4rem 0;
}

.section {
    padding: 5rem 0;
}

.container {
    max-width: 1200px;
    margin: 0 auto;
    padding: 0 2rem;
}

.ai-solutions .section-title {
    text-align: center;
    margin-bottom: 2rem;
}

.section-title {
    text-align: center;
    margin-bottom: 3rem;
}

.section-title h2 {
    font-size: 2.5rem;
    margin-bottom: 1rem;
    background: linear-gradient(135deg, #667eea 0%, #764ba2 100%);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
}

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

.desktop-notice {
    font-size: 1rem;
    color: #1e3a8a;
    font-weight: 600;
    margin-top: 0.5rem;
}

.bg-light {
    background: #f8f9fa;
}

.feature-grid {
    display: grid;
    grid-template-columns: repeat(4, minmax(0, 1fr));
    gap: 1.5rem;
    margin-top: 3rem;
}

.feature-grid.feature-grid-5 {
    grid-template-columns: repeat(3, minmax(0, 1fr));
}

.feature-card {
    background: #ffffff;
    padding: 1.6rem;
    border-radius: 16px;
    box-shadow: 0 8px 24px rgba(15, 23, 42, 0.08);
    border: 1px solid rgba(15, 23, 42, 0.06);
    transition: transform 0.25s ease, box-shadow 0.25s ease;
    text-align: left;
}

.feature-card:hover {
    transform: translateY(-4px);
    box-shadow: 0 14px 34px rgba(15, 23, 42, 0.12);
}

.feature-icon {
    width: 52px;
    height: 52px;
    border-radius: 14px;
    display: flex;
    align-items: center;
    justify-content: center;
    background: linear-gradient(135deg, rgba(102, 126, 234, 0.14) 0%, rgba(118, 75, 162, 0.14) 100%);
    border: 1px solid rgba(102, 126, 234, 0.18);
    margin-bottom: 1rem;
}

.feature-icon i {
    font-size: 1.4rem;
    color: #667eea;
}

.feature-card h3 {
    font-size: 1.2rem;
    margin-bottom: 0.55rem;
    color: #0f172a;
}

.feature-card p {
    color: #475569;
    line-height: 1.7;
    font-size: 0.95rem;
}

.table-wrapper {
    margin-top: 2rem;
    overflow-x: auto;
    border-radius: 16px;
    border: 1px solid rgba(15, 23, 42, 0.08);
    background: #ffffff;
    box-shadow: 0 8px 24px rgba(15, 23, 42, 0.06);
}

.comparison-table {
    width: 100%;
    border-collapse: collapse;
    min-width: 720px;
}

.comparison-table th,
.comparison-table td {
    padding: 0.95rem 1rem;
    border-bottom: 1px solid rgba(15, 23, 42, 0.08);
    text-align: left;
    vertical-align: top;
}

.comparison-table thead th {
    background: #f8fafc;
    font-weight: 800;
    color: #0f172a;
}

.comparison-table tbody tr:nth-child(even) td {
    background: rgba(102, 126, 234, 0.05);
}

.comparison-table tbody tr:last-child td {
    border-bottom: 0;
}

.comparison-table td[colspan] {
    font-weight: 800;
    color: #0f172a;
}

@media (max-width: 1024px) {
    .feature-grid {
        grid-template-columns: repeat(2, minmax(0, 1fr));
    }
}

@media (max-width: 600px) {
    .feature-grid {
        grid-template-columns: 1fr;
    }

    .feature-grid.feature-grid-5 {
        grid-template-columns: 1fr;
    }

    .comparison-table {
        min-width: 640px;
    }

    .page-virt .table-wrapper {
        margin-top: 1.5rem;
        -webkit-overflow-scrolling: touch;
    }

    .page-virt .comparison-table {
        min-width: 480px;
    }

    .page-virt .comparison-table th,
    .page-virt .comparison-table td {
        padding: 0.65rem 0.7rem;
        font-size: 0.85rem;
        word-break: break-word;
    }
}

@media (max-width: 420px) {
    .page-virt .comparison-table {
        min-width: 420px;
    }
}

/* 功能试用区域 */
.trial {
    background: white;
}

.trial-grid {
    display: grid;
    grid-template-columns: repeat(4, 1fr);
    gap: 1.5rem;
    margin-top: 3rem;
}

@media (max-width: 1024px) {
    .trial-grid {
        grid-template-columns: repeat(2, 1fr);
    }
}

@media (max-width: 600px) {
    .trial-grid {
        grid-template-columns: 1fr;
    }
}

.trial-card {
    background: #f8f9fa;
    padding: 1.5rem;
    border-radius: 15px;
    box-shadow: 0 5px 15px rgba(0, 0, 0, 0.1);
    transition: transform 0.3s ease;
    text-align: center;
    border: 2px solid transparent;
    display: flex;
    flex-direction: column;
    justify-content: space-between;
}

.trial-card:hover {
    transform: translateY(-5px);
    border-color: #667eea;
}

.trial-icon {
    font-size: 2.5rem;
    background: linear-gradient(135deg, #667eea 0%, #764ba2 100%);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
    margin-bottom: 0.8rem;
}

.trial-card h3 {
    font-size: 1.2rem;
    margin-bottom: 0.8rem;
    color: #333;
}

.trial-card p {
    color: #666;
    line-height: 1.5;
    margin-bottom: 1.2rem;
    font-size: 0.9rem;
    flex-grow: 1;
}

.trial-btn {
    background: linear-gradient(135deg, #667eea 0%, #764ba2 100%);
    color: white;
    border: none;
    padding: 0.6rem 1.2rem;
    border-radius: 25px;
    font-size: 0.85rem;
    font-weight: 600;
    cursor: pointer;
    transition: all 0.3s ease;
    text-transform: uppercase;
    letter-spacing: 0.5px;
    align-self: center;
}

.trial-btn:hover {
    transform: translateY(-2px);
    box-shadow: 0 5px 15px rgba(102, 126, 234, 0.4);
}

/* 服务区域 */
.services {
    background: #f8f9fa;
}

.services-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
    gap: 1.5rem;
    margin-top: 2rem;
}

.service-card {
    background: white;
    padding: 1.5rem;
    border-radius: 15px;
    box-shadow: 0 5px 15px rgba(0, 0, 0, 0.1);
    transition: transform 0.3s ease;
    text-align: center;
}

.service-card:hover {
    transform: translateY(-5px);
}

.service-icon {
    font-size: 2.5rem;
    background: linear-gradient(135deg, #667eea 0%, #764ba2 100%);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
    margin-bottom: 0.8rem;
}

.service-card h3 {
    font-size: 1.3rem;
    margin-bottom: 0.6rem;
    color: #333;
}

.service-card p {
    color: #666;
    line-height: 1.5;
    font-size: 0.95rem;
}

/* 行业解决方案 */
.industries-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(250px, 1fr));
    gap: 1.5rem;
    margin-top: 3rem;
}

.industry-card {
    background: linear-gradient(135deg, #667eea 0%, #764ba2 100%);
    color: white;
    padding: 2rem;
    border-radius: 15px;
    text-align: center;
    transition: transform 0.3s ease;
}

.industry-card:hover {
    transform: scale(1.05);
}

.industry-card i {
    font-size: 2.5rem;
    margin-bottom: 1rem;
}

.industry-card h3 {
    font-size: 1.3rem;
    margin-bottom: 0.5rem;
}

/* 技术实力 */
.tech-strength {
    background: #f8f9fa;
}

.tech-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(200px, 1fr));
    gap: 2rem;
    margin-top: 3rem;
}

.tech-item {
    text-align: center;
    padding: 1.5rem;
}

.tech-item i {
    font-size: 3rem;
    color: #667eea;
    margin-bottom: 1rem;
}

.tech-item h4 {
    font-size: 1.2rem;
    margin-bottom: 0.5rem;
}

.tech-item p {
    color: #666;
    font-size: 0.9rem;
}

/* 客户案例 */
/* AI解决方案 */
.ai-solutions {
    background: #f8f9fa;
}

.products {
    background: white;
}

.solutions-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(280px, 1fr));
    gap: 1.5rem;
    margin-top: 2rem;
}

.virt-features-grid {
    grid-template-columns: repeat(4, 1fr);
}

@media (max-width: 1024px) {
    .virt-features-grid {
        grid-template-columns: repeat(2, 1fr);
    }
}

@media (max-width: 600px) {
    .virt-features-grid {
        grid-template-columns: 1fr;
    }
}

.solutions-grid a.solution-card {
    text-decoration: none;
    color: inherit;
}

.solution-card {
    background: white;
    padding: 1.2rem;
    border-radius: 15px;
    box-shadow: 0 5px 20px rgba(0, 0, 0, 0.1);
    transition: transform 0.3s ease, box-shadow 0.3s ease;
    text-align: center;
    position: relative;
    overflow: hidden;
}

.solution-card:hover {
    transform: translateY(-5px);
    box-shadow: 0 10px 30px rgba(102, 126, 234, 0.2);
}

.solution-icon {
    width: 50px;
    height: 50px;
    background: linear-gradient(135deg, #667eea 0%, #764ba2 100%);
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    margin: 0 auto 0.8rem;
}

.solution-icon i {
    font-size: 1.2rem;
    color: white;
}

.solution-card h4 {
    font-size: 1.2rem;
    margin-bottom: 0.5rem;
    color: #333;
}

.solution-card p {
    color: #666;
    line-height: 1.5;
    font-size: 0.9rem;
}

.product-badge {
    position: absolute;
    top: 12px;
    left: 12px;
    background: rgba(102, 126, 234, 0.12);
    color: #4f46e5;
    border: 1px solid rgba(102, 126, 234, 0.25);
    padding: 0.25rem 0.6rem;
    border-radius: 999px;
    font-size: 0.75rem;
    font-weight: 700;
    letter-spacing: 0.5px;
}

/* 火热标识样式 */
.hot-badge {
    position: absolute;
    top: -5px;
    right: -5px;
    background: linear-gradient(135deg, #ff6b6b 0%, #ff8e53 100%);
    color: white;
    padding: 0.3rem 0.8rem;
    border-radius: 15px;
    font-size: 0.75rem;
    font-weight: bold;
    display: flex;
    align-items: center;
    gap: 0.3rem;
    box-shadow: 0 2px 10px rgba(255, 107, 107, 0.3);
    animation: hotPulse 2s ease-in-out infinite;
    z-index: 10;
}

.hot-badge i {
    font-size: 0.8rem;
    animation: fireFlicker 1.5s ease-in-out infinite alternate;
}

/* 火热动画效果 */
@keyframes hotPulse {
    0%, 100% {
        transform: scale(1);
        box-shadow: 0 2px 10px rgba(255, 107, 107, 0.3);
    }
    50% {
        transform: scale(1.05);
        box-shadow: 0 4px 20px rgba(255, 107, 107, 0.5);
    }
}

@keyframes fireFlicker {
    0% {
        transform: rotate(-2deg) scale(1);
        opacity: 0.9;
    }
    100% {
        transform: rotate(2deg) scale(1.1);
        opacity: 1;
    }
}

/* 火热产品卡片特殊效果 */
.hot-product {
    border: 2px solid transparent;
    background: linear-gradient(white, white) padding-box,
                linear-gradient(135deg, #ff6b6b, #ff8e53) border-box;
}

.hot-product:hover {
    transform: translateY(-8px);
    box-shadow: 0 15px 40px rgba(255, 107, 107, 0.2);
}

.success-metrics {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(200px, 1fr));
    gap: 2rem;
    margin-top: 4rem;
    padding: 2rem;
    background: linear-gradient(135deg, #667eea 0%, #764ba2 100%);
    border-radius: 15px;
}

.metric-item {
    text-align: center;
    color: white;
}

.metric-number {
    font-size: 2.5rem;
    font-weight: bold;
    margin-bottom: 0.5rem;
}

.metric-label {
    font-size: 1rem;
    opacity: 0.9;
}

 

.about-content {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 4rem;
    align-items: center;
    margin-top: 3rem;
}

.about-text h3 {
    font-size: 2rem;
    margin-bottom: 1rem;
    color: #333;
}

.about-text p {
    color: #666;
    line-height: 1.8;
    margin-bottom: 1.5rem;
}

.about-stats {
    display: grid;
    grid-template-columns: repeat(2, 1fr);
    gap: 2rem;
}

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

.stat-number {
    font-size: 2.5rem;
    font-weight: bold;
    color: #667eea;
}

.stat-label {
    color: #666;
    font-size: 0.9rem;
}

/* 页脚 */
.footer {
    background: #333;
    color: white;
    padding: 1.5rem 0 0.8rem;
}

.footer-content {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(250px, 1fr));
    gap: 1.5rem;
    margin-bottom: 1.5rem;
}

.footer-section h4 {
    margin-bottom: 0.8rem;
    color: #667eea;
}

.footer-section p,
.footer-section a {
    color: #ccc;
    text-decoration: none;
    line-height: 1.4;
    font-size: 0.9rem;
}

.footer-section a:hover {
    color: white;
}

.footer-bottom {
    border-top: 1px solid #555;
    padding-top: 0.8rem;
    text-align: center;
    color: #999;
    font-size: 0.85rem;
}

/* 响应式设计 */
@media (max-width: 1024px) {
    .nav-container {
        padding: 0 1.5rem;
    }
    
    .hero-container {
        gap: 2rem;
    }

    #home.hero .hero-container.hero-container-split {
        grid-template-columns: 1fr;
    }
    
    .section {
        padding: 4rem 0;
    }
}

@media (max-width: 768px) {
    .mobile-menu-toggle {
        display: flex;
    }

    .virt-platform-title {
        font-size: 2.1rem;
        line-height: 1.15;
    }

    #home.hero {
        min-height: auto;
        padding: 7.25rem 0 4.5rem;
    }

    .home-diagram iframe {
        height: 260px;
    }

    .desktop-only {
        display: none;
    }

    .nav-container {
        position: relative;
    }

    .nav-menu {
        position: absolute;
        top: calc(100% + 0.75rem);
        left: 1rem;
        right: 1rem;
        flex-direction: column;
        gap: 0;
        padding: 0.75rem;
        background: rgba(255, 255, 255, 0.98);
        backdrop-filter: blur(12px);
        border-radius: 14px;
        border: 1px solid rgba(15, 23, 42, 0.08);
        box-shadow: 0 12px 30px rgba(15, 23, 42, 0.18);
        display: none;
    }

    .nav-menu.active {
        display: flex;
    }

    .nav-menu li {
        width: 100%;
    }

    .nav-menu a {
        display: flex;
        align-items: center;
        justify-content: space-between;
        width: 100%;
        padding: 0.85rem 1rem;
    }

    .dropdown-menu {
        position: static;
        opacity: 1;
        visibility: visible;
        transform: none;
        box-shadow: none;
        background: transparent;
        padding: 0.25rem 0 0.5rem;
        min-width: 0;
        border-radius: 0;
    }

    .dropdown-menu a {
        padding: 0.75rem 1rem 0.75rem 2rem;
        white-space: normal;
    }
}

/* Contact Us Modal Styles */
.modal {
    display: none;
    position: fixed;
    z-index: 2000;
    left: 0;
    top: 0;
    width: 100%;
    height: 100%;
    background-color: rgba(0, 0, 0, 0.5);
    overflow: auto;
    backdrop-filter: blur(5px);
}

.modal-content {
    background-color: #fefefe;
    margin: 5% auto;
    padding: 2.5rem;
    border: 1px solid #888;
    width: 90%;
    max-width: 500px;
    border-radius: 15px;
    box-shadow: 0 10px 30px rgba(0, 0, 0, 0.3);
    position: relative;
    animation: modalSlideIn 0.3s ease-out;
}

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

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

.close-modal:hover,
.close-modal:focus {
    color: #333;
    text-decoration: none;
}

.form-group {
    margin-bottom: 1.2rem;
}

.form-group label {
    display: block;
    margin-bottom: 0.5rem;
    font-weight: 600;
    color: #333;
    font-size: 0.95rem;
}

.form-group input,
.form-group textarea {
    width: 100%;
    padding: 0.8rem 1rem;
    border: 1px solid #ddd;
    border-radius: 8px;
    font-size: 1rem;
    transition: all 0.3s;
    background-color: #f9f9f9;
}

.form-group input:focus,
.form-group textarea:focus {
    border-color: #667eea;
    background-color: #fff;
    outline: none;
    box-shadow: 0 0 0 3px rgba(102, 126, 234, 0.1);
}

.submit-btn {
    width: 100%;
    background: linear-gradient(135deg, #667eea 0%, #764ba2 100%);
    color: white;
    padding: 1rem;
    border: none;
    border-radius: 8px;
    font-size: 1.1rem;
    font-weight: 600;
    cursor: pointer;
    transition: all 0.3s;
    margin-top: 1rem;
    letter-spacing: 1px;
}

.submit-btn:hover {
    opacity: 0.9;
    transform: translateY(-2px);
    box-shadow: 0 5px 15px rgba(102, 126, 234, 0.4);
}

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