/* 全局样式 */
:root {
    --primary-blue: #FF0000;
    --secondary-green: #34a853;
    --dark-blue: #0d47a1;
    --light-blue: #fff1f1;
    --text-primary: #202124;
    --text-secondary: #5f6368;
    --background-light: #ffffff;
    --white: #ffffff;
    --red: #FF0000;
    --dark-red: #990000;  /* 调整为更深的红色 */
    --nav-menu-left: 20%;  /* 添加导航菜单左侧位置变量 */
}

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

body {
    font-family: 'Noto Sans SC', sans-serif;
    line-height: 1.6;
    color: var(--text-primary);
    overflow-x: hidden;
}

/* 导航栏样式 */
.navbar {
    position: fixed;
    top: 0;
    left: 0;
    right: 0;
    height: 64px;
    background: var(--white);
    box-shadow: 0 4px 12px rgba(0, 0, 0, 0.15);
    display: flex;
    justify-content: space-between;
    align-items: center;
    padding: 0 5%;
    z-index: 1000;
    width: 100%;
}

.nav-brand {
    display: flex;
    align-items: center;
    gap: 12px;
    flex-shrink: 0;
}

.logo {
    height: 40px;
    width: auto;
    object-fit: contain;
    margin-right: 12px;
}

.nav-menu {
    display: flex;
    gap: 32px;
    justify-content: flex-end;
    align-items: center;
    flex-shrink: 0;
    margin-left: auto;
}

.nav-menu a {
    text-decoration: none;
    color: var(--text-primary);
    font-weight: 500;
    transition: color 0.3s;
    position: relative;
    height: 64px;
    display: flex;
    align-items: center;
    overflow: visible;
}

.nav-menu a::after {
    content: '';
    position: absolute;
    bottom: 0;
    left: 0;
    width: 100%;
    height: 2px;
    background: var(--red);
    transform: scaleX(0);
    transition: transform 0.3s ease;
    transform-origin: right;
}

.nav-menu a:hover::after {
    transform: scaleX(1);
    transform-origin: left;
}

.nav-menu a:hover {
    color: var(--text-primary);
}

.nav-menu a.active {
    color: var(--red);
}

.dropdown {
    position: relative;
    display: inline-block;
}

.dropdown-content {
    display: none;
    position: absolute;
    left: 0;
    top: 64px;
    background: var(--dark-red);
    box-shadow: 0 8px 16px rgba(0,0,0,0.1);
    z-index: 999;
    padding: 32px;
    border-radius: 0 0 8px 8px;
    opacity: 0;
    visibility: hidden;
    transition: all 0.3s ease;
    width: 360px;
}

.dropdown-content .menu-items {
    display: flex;
    flex-direction: column;
    gap: 24px;
}

.dropdown-content a {
    display: flex;
    align-items: flex-start;
    gap: 20px;
    padding: 0;
    transition: all 0.3s ease;
    text-decoration: none;
    background: transparent;
    position: relative;
}

.dropdown-content a::after {
    content: '';
    position: absolute;
    bottom: -4px;
    left: 0;
    width: 0;
    height: 2px;
    background: var(--white);
    transition: width 0.3s ease;
}

.dropdown-content a:hover::after {
    width: 100%;
}

.dropdown-content a:hover {
    transform: translateX(-4px);
}

.dropdown-content a i {
    font-size: 24px;
    color: var(--white);
    transition: color 0.3s ease;
    flex-shrink: 0;
    width: 24px;
    text-align: center;
}

.dropdown-content .text-content {
    display: flex;
    flex-direction: column;
    gap: 6px;
    flex: 1;
    min-width: 0;
    width: 100%;
}

.dropdown-content a h4 {
    font-size: 16px;
    color: var(--white);
    margin: 0;
    transition: color 0.3s ease;
    font-weight: 500;
    line-height: 1.4;
    text-align: left;
}

.dropdown-content a .subtitle {
    font-size: 13px;
    color: rgba(255, 255, 255, 0.8);
    font-weight: normal;
    transition: color 0.3s ease;
    line-height: 1.4;
    text-align: left;
    width: 100%;
    margin: 0;
    padding: 0;
}

.dropdown-content a:hover h4,
.dropdown-content a:hover i {
    color: var(--white);
}

.dropdown-content a:hover .subtitle {
    color: var(--white);
    opacity: 1;
}

.dropdown:hover .dropdown-content {
    display: block;
    opacity: 1;
    visibility: visible;
}

/* 删除导航栏右侧模块相关样式 */
.nav-actions {
    display: none;
}

.lang-switch,
.console-btn,
.login-btn {
    display: none;
}

/* 首页首屏样式 */
.hero-section {
    position: relative;
    min-height: 100vh;
    height: 100vh;
    background: var(--white);
    overflow: hidden;
    border-bottom: 1px solid rgba(0, 0, 0, 0.1);
}

#bg-animation {
    display: none;
}

.hero-content {
    position: relative;
    z-index: 2;
    min-height: 100vh;
    height: 100vh;
    display: flex;
    flex-direction: column;
    justify-content: flex-start;
    align-items: flex-start;
    text-align: left;
    color: var(--text-primary);
    padding: 0;
    width: 100%;
    margin: 0;
    padding-top: 20vh;
}

/* 添加背景图片容器 */
.hero-background {
    position: absolute;
    left: 15%;
    top: calc(20vh + 20px);
    width: 600px;
    height: 400px;
    background-image: url('img/ptm_background_002.png');
    background-size: contain;
    background-repeat: no-repeat;
    background-position: left center;
    z-index: 1;
    pointer-events: none;
}

.hero-titles {
    height: auto;
    margin-bottom: 24px;
    margin-top: 100px;
    text-align: left;
    width: 100%;
    max-width: 1200px;
    margin-left: auto;
    margin-right: auto;
    padding: 0 20px;
    display: flex;
    flex-direction: column;
    align-items: flex-start;
    position: relative;
    z-index: 2;
    transform: translateX(300px);
}

.title-wrapper {
    display: flex;
    flex-direction: column;
    align-items: flex-start;
    gap: 32px;
    width: 100%;
    transform: translateX(300px);
}

.title-container {
    position: relative;
    height: auto;
    min-height: 180px;
    overflow: visible;
    width: 100vw;
    margin-left: calc(-50vw + 14%);
    margin-right: calc(-50vw + 50%);
    display: flex;
    flex-direction: column;
    align-items: flex-start;
    padding-left: 10px;
    margin-top: 20px;
}

.title-group {
    position: absolute;
    width: 100%;
    opacity: 1;
    transform: translateY(0);
}

.title-group.chinese {
    animation: none;
    animation-delay: 0s;
    opacity: 1;
    transform: translateY(0);
}

.title-group.english {
    display: none;
}

@keyframes fadeInOut {
    0% {
        opacity: 1;
        transform: translateY(0);
    }
    100% {
        opacity: 1;
        transform: translateY(0);
    }
}

.main-title {
    font-size: 3.6rem;
    width: 100%;
    color: var(--text-primary);
    line-height: 1.3;
    white-space: normal;
    font-weight: 600;
    text-shadow: none;
    margin: 0;
    padding: 0;
    display: flex;
    flex-direction: column;
    gap: 12px;
    text-align: left;
}

.title-line {
    display: block;
    width: 100%;
    text-align: left;
    padding: 0 20px;
    max-width: 1200px;
    margin: 0 auto;
}

.subtitle {
    font-size: 0.756rem;
    color: var(--text-secondary);
    font-weight: 400;
    text-shadow: none;
    line-height: 1.6;
    max-width: 800px;
    width: 100%;
    text-align: left;
    padding-left: 10px;
    margin-left: calc(-50vw + 73.5%);
    margin-top: 0px;
}

.hero-subtitles {
    display: none;
}

.button-wrapper {
    height: auto;
    margin-top: 48px;
    text-align: center;
    padding: 0 20px;
    width: 100%;
    display: flex;
    flex-direction: column;
    align-items: center;
    max-width: 1200px;
    margin-left: auto;
    margin-right: auto;
    position: absolute;
    top: 60vh;
    left: 38.3%;
    transform: translate(-50%, -50%);
}

.solution-text {
    display: none;
}

.core-stats-section.visible ~ .hero-section .solution-text {
    display: none;
}

.hero-content .detail-btn {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    padding: 14px 32px;
    background: var(--white);
    border: 1px solid rgba(255, 0, 0, 0.1);
    border-radius: 8px;
    color: var(--red);
    font-size: 0.95rem;
    font-weight: 500;
    cursor: pointer;
    transition: all 0.4s cubic-bezier(0.4, 0, 0.2, 1);
    text-decoration: none;
    height: auto;
    line-height: 1;
    width: auto;
    min-width: 180px;
    box-shadow: 0 4px 12px rgba(0, 0, 0, 0.08);
    position: relative;
    overflow: hidden;
}

.hero-content .detail-btn::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background: linear-gradient(120deg, transparent 0%, rgba(255, 0, 0, 0.08) 50%, transparent 100%);
    transform: translateX(-100%);
    transition: transform 0.6s ease;
}

.hero-content .detail-btn:hover {
    background: var(--white);
    transform: translateY(-2px);
    box-shadow: 0 6px 16px rgba(0, 0, 0, 0.12);
    color: #e60000;
}

.hero-content .detail-btn:hover::before {
    transform: translateX(100%);
}

/* 数据监控模块样式（第二屏） */
.core-stats-section {
    padding: 120px 5% 160px;
    background: var(--dark-red);
    min-height: 100vh;
    display: flex;
    flex-direction: column;
    align-items: center;
    justify-content: flex-start;
    position: relative;
    width: 100%;
    border-bottom: 1px solid rgba(255, 255, 255, 0.1);
}

.core-stats {
    display: grid;
    grid-template-columns: repeat(5, 1fr);
    gap: 24px;
    width: 100%;
    max-width: 1600px;
    margin: 48px auto 0;
    padding: 0 20px;
    position: relative;
    z-index: 2;
}

.stat-item {
    background: var(--white);
    padding: 24px;
    border-radius: 12px;
    text-align: left;
    box-shadow: 0 8px 32px rgba(0, 0, 0, 0.15);
    transition: all 0.6s cubic-bezier(0.4, 0, 0.2, 1);
    height: 550px;
    display: flex;
    flex-direction: column;
    justify-content: flex-start;
    align-items: flex-start;
    position: relative;
    overflow: hidden;
    opacity: 0;
    transform: translateY(50px);
    transition: opacity 0.6s ease-out, transform 0.6s ease-out;
    border: none;
}

.product-details {
    flex: 1;
    display: flex;
    flex-direction: column;
    gap: 4px;
    margin: 4px 0;
    overflow-y: auto;
    padding-right: 8px;
}

.product-details::-webkit-scrollbar {
    width: 4px;
}

.product-details::-webkit-scrollbar-thumb {
    background: rgba(0, 0, 0, 0.1);
    border-radius: 2px;
}

.detail-group {
    display: flex;
    flex-direction: column;
    gap: 2px;
}

.detail-group h4 {
    color: var(--dark-red);
    font-size: 0.9rem;
    font-weight: 600;
    margin: 0;
}

.detail-group ul {
    list-style: none;
    padding: 0;
    margin: 0;
    display: flex;
    flex-direction: column;
    gap: 2px;
}

.detail-group ul li {
    color: var(--text-secondary);
    font-size: 0.8rem;
    line-height: 1.4;
    position: relative;
    padding-left: 16px;
}

.detail-group ul li::before {
    content: '•';
    position: absolute;
    left: 0;
    color: var(--dark-red);
    font-size: 1.2rem;
    line-height: 1;
    top: 0.1em;
}

.detail-group p {
    color: var(--text-secondary);
    font-size: 0.8rem;
    line-height: 1.4;
    margin: 0;
}

.stat-item .detail-btn {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    padding: 12px 24px;
    background: var(--white);
    border: 1px solid rgba(255, 0, 0, 0.1);
    border-radius: 8px;
    color: var(--red);
    font-size: 0.9rem;
    font-weight: 500;
    cursor: pointer;
    transition: all 0.4s cubic-bezier(0.4, 0, 0.2, 1);
    text-decoration: none;
    box-shadow: 0 4px 12px rgba(0, 0, 0, 0.08);
    position: relative;
    overflow: hidden;
    width: 100%;
    text-align: center;
}

.stat-item .detail-btn::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background: linear-gradient(120deg, transparent 0%, rgba(255, 0, 0, 0.08) 50%, transparent 100%);
    transform: translateX(-100%);
    transition: transform 0.6s ease;
}

.stat-item .detail-btn:hover {
    background: var(--white);
    transform: translateY(-2px);
    box-shadow: 0 6px 16px rgba(0, 0, 0, 0.12);
}

.stat-item .detail-btn:hover::before {
    transform: translateX(100%);
}

.stat-item:nth-child(1) { transition-delay: 0.2s; }
.stat-item:nth-child(2) { transition-delay: 0.4s; }
.stat-item:nth-child(3) { transition-delay: 0.6s; }
.stat-item:nth-child(4) { transition-delay: 0.8s; }
.stat-item:nth-child(5) { transition-delay: 1s; }

.core-stats.visible .stat-item {
    opacity: 1;
    transform: translateX(0);
}

.stat-item:hover {
    transform: translateY(-5px);
    background: var(--white);
    box-shadow: 0 12px 48px rgba(0, 0, 0, 0.25);
}

.stat-item .title {
    color: var(--dark-red);
    font-weight: 700;
    margin-bottom: 2px;
    font-size: 1.2rem;
    line-height: 1.4;
}

.stat-item .subtitle {
    color: var(--text-secondary);
    font-weight: normal;
    margin-bottom: 2px;
    font-size: 0.9rem;
    line-height: 1.4;
}

.product-icon {
    width: 48px;
    height: 48px;
    background: var(--dark-red);
    border-radius: 8px;
    display: flex;
    align-items: center;
    justify-content: center;
    margin-bottom: 16px;
}

.product-icon i {
    font-size: 24px;
    color: var(--white);
}

/* 核心功能展示区样式（第三屏） */
.features-section {
    padding: 120px 5% 160px;
    background: var(--white);
    display: grid;
    grid-template-columns: repeat(4, 1fr);
    gap: 24px;
    opacity: 1;
    transform: none;
    transition: all 0.8s ease-out;
    position: relative;
    margin-top: 0;
}

.features-section h2 {
    grid-column: 1 / -1;
    text-align: center;
    font-size: 2.5rem;
    color: var(--text-primary);
    margin-bottom: 16px;
    margin-top: 0;
}

.features-section .subtitle {
    grid-column: 1 / -1;
    text-align: center;
    color: var(--text-secondary);
    font-size: 1.1rem;
    max-width: 800px;
    margin: 30px auto 80px;
    line-height: 1.6;
    padding: 0 20px;
}

.features-section.visible {
    opacity: 1;
    transform: none;
}

.feature-card {
    background: var(--white);
    padding: 32px;
    border-radius: 8px;
    text-align: center;
    box-shadow: 0 4px 6px rgba(0,0,0,0.1);
    transition: transform 0.3s;
    opacity: 0;
    transform: translateY(30px);
    border: 1px solid rgba(0, 0, 0, 0.1);
}

.feature-card:nth-child(1) { transition-delay: 0.1s; }
.feature-card:nth-child(2) { transition-delay: 0.2s; }
.feature-card:nth-child(3) { transition-delay: 0.3s; }
.feature-card:nth-child(4) { transition-delay: 0.4s; }

.features-section.visible .feature-card {
    opacity: 1;
    transform: translateY(0);
}

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

.feature-card i {
    font-size: 2.5rem;
    color: var(--red);
    margin-bottom: 16px;
}

.feature-card h3 {
    margin-bottom: 12px;
    color: var(--text-primary);
}

.feature-card p {
    color: var(--text-secondary);
}

/* 解决方案专区样式 */
.solutions-section {
    padding: 80px 5%;
}

.solutions-section h2 {
    text-align: center;
    margin-bottom: 48px;
    font-size: 2.5rem;
}

.industry-nav {
    display: flex;
    justify-content: center;
    gap: 16px;
    margin-bottom: 48px;
}

.industry-nav button {
    padding: 12px 24px;
    border: none;
    border-radius: 24px;
    background: var(--light-blue);
    color: var(--primary-blue);
    cursor: pointer;
    transition: all 0.3s;
}

.industry-nav button.active {
    background: var(--primary-blue);
    color: var(--white);
}

.solutions-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
    gap: 24px;
}

/* 实时监控预览样式 */
.monitor-section {
    padding: 80px 5%;
    background: var(--primary-blue);
    position: relative;
    display: block;
    opacity: 1;
    visibility: visible;
}

.monitor-dashboard {
    display: grid;
    grid-template-columns: repeat(4, 1fr);
    gap: 24px;
    padding: 20px;
    border-radius: 12px;
    background: rgba(255, 255, 255, 0.1);
    backdrop-filter: blur(10px);
    position: relative;
    z-index: 2;
}

.dashboard-item {
    background: rgba(255, 255, 255, 0.2);
    padding: 24px;
    border-radius: 12px;
    text-align: center;
    box-shadow: 0 4px 6px rgba(0,0,0,0.1);
    backdrop-filter: blur(10px);
    min-height: 104px;
    display: flex;
    flex-direction: column;
    justify-content: center;
    position: relative;
    z-index: 3;
}

.dashboard-item h3 {
    color: var(--white);
    margin-bottom: 12px;
    font-weight: 500;
}

.dashboard-item .value {
    font-size: 2rem;
    font-weight: bold;
    color: var(--white);
    text-shadow: 0 2px 4px rgba(0, 0, 0, 0.2);
}

/* 技术优势区样式 */
.tech-section {
    display: none;
}

.tech-section h2 {
    display: none;
}

.tech-grid {
    display: none;
}

.tech-item {
    display: none;
}

.tech-item i {
    display: none;
}

.tech-item h3 {
    display: none;
}

/* 底部信息区样式 */
.footer {
    background: var(--dark-red);
    color: var(--white);
    padding: 16px 5% 8px;
}

.footer-content {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: 12px;
    margin-bottom: 12px;
    text-align: center;
}

.footer-section {
    display: flex;
    flex-direction: column;
    align-items: center;
}

.footer-section h4 {
    margin-bottom: 6px;
    font-size: 0.85rem;
    text-align: center;
    color: var(--white);
}

.footer-section ul {
    list-style: none;
    display: flex;
    flex-direction: column;
    align-items: center;
    gap: 4px;
}

.footer-section p {
    text-align: center;
    margin-bottom: 2px;
    font-size: 0.75rem;
    color: rgba(255, 255, 255, 0.8);
}

.footer-bottom {
    padding-top: 8px;
    display: flex;
    flex-direction: column;
    align-items: center;
    gap: 6px;
    text-align: center;
    width: 100vw;
    margin-left: calc(-5%);
    padding-left: 5%;
    padding-right: 5%;
}

.partner-logos {
    display: flex;
    gap: 8px;
    justify-content: center;
}

.footer-links {
    display: flex;
    gap: 8px;
    align-items: center;
    justify-content: center;
    flex-wrap: wrap;
    font-size: 0.7rem;
}

.footer-section a {
    color: var(--white);
    text-decoration: none;
    opacity: 0.9;
    transition: opacity 0.3s;
    font-size: 0.75rem;
}

.footer-links a {
    color: var(--white);
    text-decoration: none;
    opacity: 0.9;
    transition: opacity 0.3s;
    font-size: 0.7rem;
}

.contact-btn {
    background: var(--white);
    color: var(--dark-red);
    border: none;
    padding: 4px 8px;
    border-radius: 2px;
    cursor: pointer;
    margin-top: 4px;
    transition: all 0.3s;
    font-weight: 500;
    font-size: 0.75rem;
}

.contact-btn:hover {
    background: rgba(255, 255, 255, 0.9);
    transform: translateY(-2px);
}

/* 响应式设计 */
@media (max-width: 1200px) {
    .core-stats {
        grid-template-columns: repeat(3, 1fr);
    }
}

@media (max-width: 768px) {
    .navbar {
        padding: 0 20px;
    }
    
    .nav-menu {
        display: none;
    }
    
    .title-container {
        min-height: 140px;
        padding-left: 20px;
        margin-top: 15px;
    }
    
    .main-title {
        font-size: 2rem;
        line-height: 1.3;
    }
    
    .subtitle {
        padding-left: 20px;
        margin-left: 0;
        font-size: 0.9rem;
    }
    
    .core-stats {
        grid-template-columns: 1fr;
    }
    
    .features-section {
        grid-template-columns: 1fr;
    }
    
    .monitor-dashboard {
        grid-template-columns: 1fr;
    }
    
    .footer-content {
        grid-template-columns: 1fr;
        gap: 8px;
    }
    
    .footer-bottom {
        margin-left: -20px;
        width: 100vw;
        padding-left: 20px;
        padding-right: 20px;
    }
    
    .footer-links {
        flex-direction: column;
        gap: 4px;
    }
    
    .button-wrapper {
        margin-top: 40px;
        align-items: center;
        text-align: center;
        top: 50vh;
        left: 50%;
    }
    
    .hero-content {
        padding-top: 15vh;
    }
    
    .hero-background {
        width: 300px;
        height: 200px;
        top: calc(15vh + 140px);
        left: 0;
    }
    
    .expert-title {
        margin-top: 60px;
        font-size: 28px;
    }
    
    .expert-desc {
        font-size: 14px;
        padding: 0 16px;
    }
    
    .hero-titles {
        margin-top: 30px;
        transform: none;
    }
    
    .service-tag {
        padding-left: 20px;
        font-size: 0.9rem;
        margin-top: 60px;
        margin-left: 0;
    }
    
    .dropdown-content .container {
        grid-template-columns: 1fr;
        gap: 16px;
    }
    
    .dropdown-content a {
        max-width: 100%;
    }
    
    .dropdown-content {
        width: 100%;
        min-height: auto;
        border-radius: 0;
        padding: 16px;
        margin-right: 0;
    }
    
    .dropdown-content a {
        padding: 12px;
    }
    
    .dropdown-content a i {
        font-size: 20px;
    }
    
    .dropdown-content a h4 {
        font-size: 14px;
    }
    
    .dropdown-content a .subtitle {
        font-size: 12px;
    }
    
    .stat-item {
        height: auto;
        min-height: 500px;
    }
}

/* 右侧悬浮按钮样式 */
.floating-buttons {
    position: fixed;
    right: 20px;
    bottom: 40px;
    display: flex;
    flex-direction: column;
    gap: 20px;
    z-index: 1000;
}

.floating-button {
    width: 60px;
    height: 60px;
    background: var(--white);
    border: 1px solid rgba(255, 0, 0, 0.1);
    border-radius: 8px;
    display: flex;
    flex-direction: column;
    align-items: center;
    justify-content: center;
    cursor: pointer;
    transition: all 0.4s cubic-bezier(0.4, 0, 0.2, 1);
    box-shadow: 0 4px 12px rgba(0, 0, 0, 0.08);
    position: relative;
    overflow: hidden;
}

.floating-button::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background: linear-gradient(120deg, transparent 0%, rgba(255, 0, 0, 0.08) 50%, transparent 100%);
    transform: translateX(-100%);
    transition: transform 0.6s ease;
}

.floating-button:hover {
    background: var(--white);
    transform: translateY(-2px);
    box-shadow: 0 6px 16px rgba(0, 0, 0, 0.12);
}

.floating-button:hover::before {
    transform: translateX(100%);
}

.floating-button .icon-text {
    font-size: 1.2rem;
    font-weight: 600;
    color: var(--red);
    margin-bottom: 4px;
    position: relative;
    z-index: 1;
}

.floating-button i {
    font-size: 1.5rem;
    color: var(--red);
    position: relative;
    z-index: 1;
}

.floating-button.contact i {
    font-size: 1.8rem;
}

.floating-button .tooltip {
    position: absolute;
    right: 70px;
    top: 50%;
    transform: translateY(-50%);
    background: var(--white);
    padding: 12px 16px;
    border-radius: 12px;
    font-size: 0.9rem;
    color: var(--red);
    white-space: nowrap;
    opacity: 0;
    visibility: hidden;
    transition: all 0.3s ease;
    box-shadow: 0 8px 32px rgba(255, 0, 0, 0.2);
    z-index: 1001;
    width: max-content;
}

.floating-button.contact .tooltip {
    display: flex;
    flex-direction: column;
    gap: 8px;
    white-space: nowrap;
    min-width: auto;
}

.floating-button.contact .tooltip span {
    display: flex;
    align-items: center;
    gap: 8px;
    color: var(--red);
    font-size: 0.9rem;
    white-space: nowrap;
}

.floating-button.contact .tooltip i {
    font-size: 1rem;
    width: 16px;
    text-align: center;
    color: var(--red);
}

/* 动画类 */
.stat-item.animate {
    opacity: 1;
    transform: translateY(0);
}

/* 为每个卡片添加延迟 */
.stat-item:nth-child(1).animate {
    transition-delay: 0s;
}

.stat-item:nth-child(2).animate {
    transition-delay: 0.2s;
}

.stat-item:nth-child(3).animate {
    transition-delay: 0.4s;
}

.stat-item:nth-child(4).animate {
    transition-delay: 0.6s;
}

.stat-item:nth-child(5).animate {
    transition-delay: 0.8s;
}

/* 添加新的样式 */
.expert-title {
    color: var(--white);
    font-size: 36px;
    font-weight: 700;
    text-align: center;
    margin-top: 0;
    letter-spacing: 2px;
    width: 100%;
    max-width: 1200px;
    position: relative;
}

.expert-desc {
    color: rgba(255, 255, 255, 0.8);
    font-size: 16px;
    font-weight: 400;
    text-align: center;
    margin-top: 16px;
    max-width: 800px;
    margin-left: auto;
    margin-right: auto;
    line-height: 1.6;
    width: 100%;
    padding: 0 20px;
}

/* 响应式调整 */
@media (max-width: 768px) {
    .service-tag {
        padding-left: 20px;
        font-size: 0.9rem;
        margin-top: 60px;
        margin-left: 0;
    }

    .hero-titles {
        margin-top: 30px;
        transform: none;
    }

    .title-container {
        min-height: 140px;
        padding-left: 20px;
        margin-top: 15px;
    }
}

/* 响应式调整 */
@media (max-width: 768px) {
    .core-stats-section {
        padding: 80px 5% 120px;
    }
    
    .features-section {
        padding: 80px 5% 120px;
        margin-top: 20px;
    }
    
    .features-section .subtitle {
        margin: 20px auto 60px;
    }
}

.main-title .title-line .highlight {
    color: #cc0000;
    font-weight: 700;
    display: inline;
}