/* Reset and Base Styles */
* {
    margin: 0;
    padding: 0;
    box-sizing: border-box;
}

html {
    scroll-behavior: smooth;
    font-size: 16px;
}

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

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

/* Typography */
h1, h2, h3, h4, h5, h6 {
    font-weight: 600;
    line-height: 1.2;
    margin-bottom: 1rem;
}

h1 { font-size: clamp(2rem, 5vw, 3rem); }
h2 { font-size: clamp(1.5rem, 4vw, 2.5rem); }
h3 { font-size: clamp(1.25rem, 3vw, 2rem); }
h4 { font-size: clamp(1.1rem, 2.5vw, 1.5rem); }

p {
    margin-bottom: 1rem;
    line-height: 1.6;
    font-size: clamp(0.9rem, 2vw, 1rem);
}

/* Buttons */
.btn {
    display: inline-block;
    padding: clamp(10px, 2.5vw, 16px) clamp(20px, 4vw, 32px);
    text-decoration: none;
    border-radius: 6px;
    font-weight: 600;
    transition: all 0.3s ease;
    border: none;
    cursor: pointer;
    font-size: clamp(14px, 2.5vw, 16px);
    text-align: center;
    white-space: nowrap;
}

.btn-primary {
    background: #fbbf24;
    color: #1e3a8a;
}

.btn-primary:hover {
    background: #f59e0b;
    transform: translateY(-2px);
    box-shadow: 0 4px 12px rgba(251, 191, 36, 0.4);
}

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

.btn-secondary:hover {
    background: white;
    color: #1e3a8a;
}

.btn-outline {
    background: transparent;
    color: #1e3a8a;
    border: 2px solid #1e3a8a;
}

.btn-outline:hover {
    background: #1e3a8a;
    color: white;
}

/* Header */
.header {
    background: #1e3a8a;
    position: fixed;
    top: 0;
    left: 0;
    right: 0;
    z-index: 1000;
    box-shadow: 0 2px 10px rgba(0,0,0,0.1);
    transition: all 0.3s ease;
}

.header .container {
    display: flex;
    align-items: center;
    justify-content: space-between;
    padding: clamp(10px, 2.5vw, 20px);
}

.logo a {
    text-decoration: none; /* 移除下划线 */
    color: inherit;
    display: block;
}

.logo h3 {
    font-size: clamp(1.5rem, 3.5vw, 2.2rem);
    font-weight: 700;
    color: #fbbf24; /* 直接使用金黄色 */
    text-shadow: 0 2px 4px rgba(0,0,0,0.2);
    transition: all 0.3s ease;
    letter-spacing: 0.5px;
}

.logo img {
    height: clamp(40px, 8vw, 60px);
    transition: transform 0.3s ease;
}

.logo:hover img {
    transform: scale(1.05);
}

/* Navigation */
.nav-menu {
    display: flex;
    list-style: none;
    margin: 0;
    padding: 0;
    align-items: center;
}

.nav-item {
    position: relative;
    margin: 0 clamp(10px, 2.5vw, 25px);
}

.nav-link {
    color: white;
    text-decoration: none;
    font-weight: 500;
    padding: clamp(10px, 2.5vw, 20px) 0;
    display: flex;
    align-items: center;
    transition: color 0.3s ease;
    font-size: clamp(14px, 2.5vw, 16px);
}

.nav-link:hover {
    color: #93c5fd;
}

.nav-link i {
    margin-left: 8px;
    font-size: 12px;
    transition: transform 0.3s ease;
}

.dropdown:hover .nav-link i {
    transform: rotate(180deg);
}

/* Dropdown Menu */
.dropdown-menu {
    position: absolute;
    top: 100%;
    left: 50%;
    transform: translateX(-50%);
    background: white;
    min-width: clamp(600px, 80vw, 900px);
    box-shadow: 0 10px 30px rgba(0,0,0,0.15);
    border-radius: 8px;
    opacity: 0;
    visibility: hidden;
    transition: all 0.3s ease;
    margin-top: 10px;
}

.dropdown:hover .dropdown-menu {
    opacity: 1;
    visibility: visible;
}

.dropdown-content {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: clamp(20px, 3vw, 40px);
    padding: clamp(25px, 4vw, 50px);
}

.dropdown-section h3 {
    color: #1e3a8a;
    margin-bottom: 15px;
    font-size: clamp(16px, 2.5vw, 20px);
    font-weight: 600;
}

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

.dropdown-section ul li {
    margin-bottom: 8px;
}

.dropdown-section ul li a {
    color: #666;
    text-decoration: none;
    transition: color 0.3s ease;
    font-size: clamp(12px, 2vw, 16px);
    padding: 5px 0;
    display: block;
}

.dropdown-section ul li a:hover {
    color: #1e3a8a;
    padding-left: 5px;
}

/* Header Actions */
.header-actions {
    display: flex;
    align-items: center;
    gap: clamp(15px, 3vw, 25px);
}

.language-selector select {
    background: transparent;
    color: white;
    border: 1px solid rgba(255,255,255,0.3);
    padding: clamp(6px, 1.5vw, 12px);
    border-radius: 4px;
    font-size: clamp(12px, 2vw, 16px);
    cursor: pointer;
}

.language-selector select option {
    background: #1e3a8a;
    color: white;
}

.mobile-menu-toggle {
    display: none;
    background: none;
    border: none;
    color: white;
    font-size: clamp(20px, 4vw, 28px);
    cursor: pointer;
    padding: 5px;
    z-index: 1001;
}


/* Home Hero Section 样式 */
.home-hero {
    position: relative;
    min-height: 100vh;
    background: #0f172a;
    overflow: hidden;
    display: flex;
    align-items: center;
    /* 增加顶部内边距，避免被header遮挡 */
    padding-top: 80px;
}

/* Home Hero Background */
.home-hero-background {
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    z-index: 1;
}

.home-hero-pattern {
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background-image: 
        radial-gradient(circle at 25% 25%, rgba(59, 130, 246, 0.1) 0%, transparent 50%),
        radial-gradient(circle at 75% 75%, rgba(147, 51, 234, 0.1) 0%, transparent 50%),
        linear-gradient(45deg, transparent 48%, rgba(59, 130, 246, 0.05) 50%, transparent 52%);
    background-size: 100% 100%, 100% 100%, 20px 20px;
}

.home-hero-gradient {
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background: linear-gradient(135deg, 
        rgba(15, 23, 42, 0.9) 0%, 
        rgba(30, 41, 59, 0.8) 50%, 
        rgba(51, 65, 85, 0.9) 100%);
}

/* Home Hero Container */
.home-hero-container {
    position: relative;
    z-index: 2;
    width: 100%;
    max-width: 1400px;
    margin: 0 auto;
    padding: 0 30px;
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 80px;
    align-items: center;
}

/* Home Hero Content */
.home-hero-content {
    color: white;
}

.home-hero-tagline {
    display: flex;
    align-items: center;
    gap: 15px;
    margin-bottom: 30px;
}

.tagline-text {
    font-size: 0.9rem;
    font-weight: 500;
    color: #3b82f6;
    text-transform: uppercase;
    letter-spacing: 2px;
}

.tagline-line {
    width: 40px;
    height: 2px;
    background: linear-gradient(90deg, #3b82f6, transparent);
}

.home-hero-title {
    margin-bottom: 25px;
}

.title-line {
    display: block;
    font-size: 3.8rem;
    font-weight: 800;
    line-height: 1.1;
    background: linear-gradient(135deg, #ffffff 0%, #e2e8f0 100%);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
}

.title-line:last-child {
    color: #3b82f6;
    background: linear-gradient(135deg, #3b82f6 0%, #1d4ed8 100%);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
}

.home-hero-description {
    font-size: 1.2rem;
    line-height: 1.7;
    margin-bottom: 35px;
    color: #cbd5e1;
    max-width: 520px;
}

/* Home Hero Highlights */
.home-hero-highlights {
    display: flex;
    gap: 25px;
    margin-bottom: 40px;
}

.highlight-item {
    display: flex;
    align-items: center;
    gap: 10px;
}

.highlight-icon {
    width: 35px;
    height: 35px;
    background: rgba(59, 130, 246, 0.2);
    border-radius: 8px;
    display: flex;
    align-items: center;
    justify-content: center;
    color: #3b82f6;
    font-size: 16px;
}

.highlight-item span {
    font-size: 0.9rem;
    font-weight: 500;
    color: #e2e8f0;
}

/* Home Hero Actions */
.home-hero-actions {
    display: flex;
    gap: 20px;
    flex-wrap: wrap;
}

.home-hero-btn {
    display: inline-flex;
    align-items: center;
    gap: 12px;
    padding: 16px 32px;
    border-radius: 12px;
    text-decoration: none;
    font-weight: 600;
    font-size: 1rem;
    transition: all 0.4s cubic-bezier(0.4, 0, 0.2, 1);
    border: 2px solid transparent;
    position: relative;
    overflow: hidden;
}

.home-hero-btn-primary {
    background: linear-gradient(135deg, #3b82f6 0%, #1d4ed8 100%);
    color: white;
    border-color: #3b82f6;
}

.home-hero-btn-primary:hover {
    background: linear-gradient(135deg, #2563eb 0%, #1e40af 100%);
    transform: translateY(-3px);
    box-shadow: 0 20px 40px rgba(59, 130, 246, 0.4);
}

.home-hero-btn-outline {
    background: transparent;
    color: white;
    border-color: rgba(255, 255, 255, 0.3);
    backdrop-filter: blur(10px);
}

.home-hero-btn-outline:hover {
    background: rgba(255, 255, 255, 0.1);
    border-color: rgba(255, 255, 255, 0.5);
    transform: translateY(-3px);
}

/* Home Hero Visual */
.home-hero-visual {
    position: relative;
}

.home-hero-main-image {
    position: relative;
    border-radius: 24px;
    overflow: hidden;
    box-shadow: 0 25px 50px rgba(0, 0, 0, 0.4);
    /* 调整图片容器大小 */
    max-width: 90%;
    margin: 0 auto;
    /* 增加顶部边距，避免被header遮挡 */
    margin-top: 60px;
}

.home-hero-main-image img {
    width: 100%;
    height: auto;
    display: block;
    transition: transform 0.6s ease;
    /* 设置最大高度控制图片大小 */
    max-height: 600px;
    object-fit: cover;
}

.home-hero-main-image:hover img {
    transform: scale(1.05);
}

.home-hero-image-frame {
    position: absolute;
    top: 20px;
    left: 20px;
    right: 20px;
    bottom: 20px;
    border: 2px solid rgba(59, 130, 246, 0.3);
    border-radius: 16px;
    pointer-events: none;
}

/* Floating Cards */
.home-hero-floating-cards {
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    pointer-events: none;
}

.floating-card {
    position: absolute;
    background: rgba(255, 255, 255, 0.95);
    border-radius: 16px;
    padding: 20px;
    display: flex;
    align-items: center;
    gap: 15px;
    box-shadow: 0 15px 35px rgba(0, 0, 0, 0.2);
    backdrop-filter: blur(15px);
    animation: float 6s ease-in-out infinite;
}

.floating-card-1 {
    top: 15%;
    right: -15px;
    animation-delay: 0s;
}

.floating-card-2 {
    top: 55%;
    left: -25px;
    animation-delay: 2s;
}

.floating-card-3 {
    bottom: 25%;
    right: -10px;
    animation-delay: 4s;
}

@keyframes float {
    0%, 100% { transform: translateY(0px) rotate(0deg); }
    50% { transform: translateY(-15px) rotate(2deg); }
}

.card-icon {
    width: 45px;
    height: 45px;
    background: linear-gradient(135deg, #3b82f6, #8b5cf6);
    border-radius: 12px;
    display: flex;
    align-items: center;
    justify-content: center;
    color: white;
    font-size: 20px;
}

.card-content h4 {
    font-size: 1.1rem;
    font-weight: 700;
    color: #1e293b;
    margin: 0 0 2px 0;
}

.card-content p {
    font-size: 0.8rem;
    color: #64748b;
    margin: 0;
    font-weight: 500;
}

/* Home Hero Scroll */
.home-hero-scroll {
    position: absolute;
    bottom: 40px;
    left: 50%;
    transform: translateX(-50%);
    text-align: center;
    color: white;
    z-index: 3;
}

.scroll-line {
    width: 2px;
    height: 60px;
    background: linear-gradient(180deg, #3b82f6, transparent);
    margin: 0 auto 15px;
    animation: scrollLine 2s infinite;
}

@keyframes scrollLine {
    0%, 100% { height: 60px; opacity: 1; }
    50% { height: 80px; opacity: 0.7; }
}

.scroll-text {
    font-size: 0.85rem;
    color: #94a3b8;
    font-weight: 500;
    letter-spacing: 1px;
}

/* 响应式设计 - 大屏幕 */
@media (max-width: 1200px) {
    .home-hero-container {
        gap: 60px;
        padding: 0 25px;
    }
    
    .title-line {
        font-size: 3.2rem;
    }
    
    .home-hero-main-image {
        max-width: 85%;
        margin-top: 50px;
    }
    
    .home-hero-main-image img {
        max-height: 450px;
    }
}

/* 响应式设计 - 平板 */
@media (max-width: 1024px) {
    .home-hero {
        padding-top: 60px;
    }
    
    .home-hero-container {
        grid-template-columns: 1fr;
        gap: 50px;
        text-align: center;
    }
    
    .title-line {
        font-size: 2.8rem;
    }
    
    .home-hero-highlights {
        justify-content: center;
    }
    
    .home-hero-actions {
        justify-content: center;
    }
    
    .home-hero-main-image {
        max-width: 80%;
        margin-top: 40px;
    }
    
    .home-hero-main-image img {
        max-height: 400px;
    }
    
    .floating-card {
        position: relative;
        top: auto;
        left: auto;
        right: auto;
        bottom: auto;
        margin: 15px;
        animation: none;
    }
    
    .home-hero-floating-cards {
        display: none;
        flex-direction: column;
        gap: 15px;
        margin-top: 20px;
    }
}

/* 响应式设计 - 手机横屏 */
@media (max-width: 768px) {
    .home-hero {
        padding-top: 50px;
    }
    
    .home-hero-container {
        padding: 0 20px;
        gap: 40px;
    }
    
    .title-line {
        font-size: 2.2rem;
    }
    
    .home-hero-description {
        font-size: 1.1rem;
    }
    
    .home-hero-highlights {
        flex-direction: column;
        align-items: center;
        gap: 20px;
    }
    
    .home-hero-actions {
        flex-direction: column;
        align-items: center;
    }
    
    .home-hero-btn {
        width: 100%;
        max-width: 300px;
        justify-content: center;
    }
    
    .home-hero-main-image {
        max-width: 85%;
        margin-top: 30px;
    }
    
    .home-hero-main-image img {
        max-height: 350px;
    }
    
    .floating-card {
        padding: 15px;
    }
    
    .card-icon {
        width: 35px;
        height: 35px;
        font-size: 16px;
    }
}

/* 响应式设计 - 手机竖屏 */
@media (max-width: 480px) {
    .home-hero {
        padding-top: 40px;
        min-height: 90vh;
    }
    
    .home-hero-container {
        padding: 0 15px;
        gap: 30px;
    }
    
    .title-line {
        font-size: 1.8rem;
    }
    
    .home-hero-description {
        font-size: 1rem;
    }
    
    .home-hero-highlights {
        gap: 15px;
    }
    
    .highlight-icon {
        width: 30px;
        height: 30px;
        font-size: 14px;
    }
    
    .highlight-item span {
        font-size: 0.8rem;
    }
    
    .home-hero-btn {
        padding: 14px 24px;
        font-size: 0.9rem;
    }
    
    .home-hero-main-image {
        max-width: 90%;
        margin-top: 25px;
    }
    
    .home-hero-main-image img {
        max-height: 400px;
    }
    
    .floating-card {
        padding: 12px;
        margin: 10px;
    }
    
    .card-icon {
        width: 30px;
        height: 30px;
        font-size: 14px;
    }
    
    .card-content h4 {
        font-size: 0.9rem;
    }
    
    .card-content p {
        font-size: 0.7rem;
    }
    
    .home-hero-scroll {
        bottom: 20px;
    }
    
    .scroll-line {
        height: 40px;
    }
    
    .scroll-text {
        font-size: 0.75rem;
    }
}

/* 响应式设计 - 超小屏幕 */
@media (max-width: 360px) {
    .home-hero {
        padding-top: 30px;
        min-height: 85vh;
    }
    
    .title-line {
        font-size: 1.6rem;
    }
    
    .home-hero-description {
        font-size: 0.9rem;
    }
    
    .home-hero-main-image {
        max-width: 95%;
        margin-top: 20px;
    }
    
    .home-hero-main-image img {
        max-height: 250px;
    }
    
    .home-hero-btn {
        padding: 12px 20px;
        font-size: 0.85rem;
    }
}

/* Features Section */
.features {
    padding: clamp(60px, 10vw, 100px) 0;
    background: #f8fafc;
}

.section-title {
    text-align: center;
    font-size: clamp(2rem, 5vw, 3rem);
    color: #1e3a8a;
    margin-bottom: clamp(40px, 8vw, 60px);
}

.features-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(clamp(250px, 40vw, 350px), 1fr));
    gap: clamp(25px, 4vw, 40px);
}

.feature-card {
    background: white;
    padding: clamp(30px, 5vw, 50px) clamp(25px, 4vw, 40px);
    border-radius: 12px;
    text-align: center;
    box-shadow: 0 5px 20px rgba(0,0,0,0.08);
    transition: all 0.3s ease;
    border: 1px solid transparent;
}

.feature-card:hover {
    transform: translateY(-5px);
    box-shadow: 0 15px 40px rgba(0,0,0,0.15);
    border-color: #1e3a8a;
}

.feature-card i {
    font-size: clamp(36px, 6vw, 56px);
    color: #1e3a8a;
    margin-bottom: clamp(15px, 3vw, 25px);
}

.feature-card h3 {
    font-size: clamp(20px, 3.5vw, 28px);
    color: #1e3a8a;
    margin-bottom: clamp(10px, 2vw, 20px);
}

.feature-card p {
    color: #666;
    line-height: 1.6;
    font-size: clamp(14px, 2.5vw, 18px);
}

/* Products Preview */
.products-preview {
    padding: clamp(60px, 10vw, 100px) 0;
}

.products-grid {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: clamp(25px, 4vw, 40px);
}

.product-card {
    background: white;
    border-radius: 12px;
    overflow: hidden;
    box-shadow: 0 5px 20px rgba(0,0,0,0.08);
    transition: all 0.3s ease;
    border: 1px solid transparent;
}

.product-card:hover {
    transform: translateY(-5px);
    box-shadow: 0 15px 40px rgba(0,0,0,0.15);
    border-color: #1e3a8a;
}

.product-card img {
    width: 100%;
    height: clamp(200px, 35vw, 280px);
    object-fit: cover;
    transition: transform 0.3s ease;
}

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

.product-card h3 {
    padding: clamp(15px, 3vw, 25px) clamp(15px, 3vw, 25px) clamp(8px, 1.5vw, 15px);
    color: #1e3a8a;
    font-size: clamp(18px, 3vw, 26px);
}

.product-card p {
    padding: 0 clamp(15px, 3vw, 25px) clamp(15px, 3vw, 25px);
    color: #666;
    line-height: 1.6;
    font-size: clamp(14px, 2.5vw, 18px);
}

.product-card .btn {
    margin: 0 clamp(15px, 3vw, 25px) clamp(15px, 3vw, 25px);
}

/* Statistics Section */
.statistics {
    padding: clamp(60px, 10vw, 100px) 0;
    background: #1e3a8a;
    color: white;
}

.stats-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(clamp(150px, 30vw, 250px), 1fr));
    gap: clamp(30px, 5vw, 50px);
    text-align: center;
}

.stat-item {
    padding: clamp(15px, 3vw, 25px);
}

.stat-number {
    font-size: clamp(2.5rem, 6vw, 4rem);
    font-weight: 700;
    color: #fbbf24;
    margin-bottom: clamp(8px, 1.5vw, 15px);
}

.stat-label {
    font-size: clamp(14px, 2.5vw, 20px);
    opacity: 0.9;
}

/* Contact Section */
.contact {
    padding: clamp(60px, 10vw, 100px) 0;
    background: #f8fafc;
}

.contact-content {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: clamp(40px, 8vw, 80px);
}

.contact-info h3 {
    color: #1e3a8a;
    font-size: clamp(20px, 3.5vw, 28px);
    margin-bottom: clamp(25px, 4vw, 35px);
}

.contact-item {
    display: flex;
    align-items: flex-start;
    margin-bottom: clamp(20px, 3vw, 30px);
}

.contact-item i {
    font-size: clamp(20px, 3.5vw, 28px);
    color: #1e3a8a;
    margin-right: clamp(12px, 2vw, 20px);
    margin-top: 5px;
    min-width: clamp(20px, 3.5vw, 28px);
}

.contact-item h4 {
    color: #1e3a8a;
    margin-bottom: clamp(5px, 1vw, 10px);
    font-size: clamp(16px, 2.5vw, 20px);
}

.contact-item p {
    color: #666;
    line-height: 1.6;
    font-size: clamp(14px, 2.5vw, 18px);
}

.contact-form {
    background: white;
    padding: clamp(25px, 4vw, 45px);
    border-radius: 12px;
    box-shadow: 0 5px 20px rgba(0,0,0,0.08);
}

.form-group {
    margin-bottom: clamp(15px, 3vw, 25px);
}

.form-group input,
.form-group textarea {
    width: 100%;
    padding: clamp(12px, 2.5vw, 18px);
    border: 2px solid #e5e7eb;
    border-radius: 8px;
    font-size: clamp(14px, 2.5vw, 18px);
    transition: border-color 0.3s ease;
    font-family: inherit;
}

.form-group input:focus,
.form-group textarea:focus {
    outline: none;
    border-color: #1e3a8a;
    box-shadow: 0 0 0 3px rgba(30, 58, 138, 0.1);
}

/* Footer - 蓝黑主色调 */
.footer {
    background: linear-gradient(135deg, #0f172a 0%, #1e293b 50%, #334155 100%);
    color: white;
    position: relative;
}

.footer::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    height: 3px;
    background: linear-gradient(90deg, #1e3a8a, #3b82f6, #60a5fa);
}

.footer-main {
    padding: clamp(50px, 8vw, 80px) 0 clamp(40px, 6vw, 60px);
    position: relative;
    z-index: 1;
}

.footer-grid {
    display: grid;
    grid-template-columns: repeat(5, 1fr);
    gap: clamp(25px, 4vw, 40px);
    align-items: start;
}

.footer-section {
    min-width: 0;
}

.footer-section h4 {
    font-size: clamp(16px, 2.5vw, 20px);
    margin-bottom: clamp(15px, 2.5vw, 25px);
    color: #60a5fa;
    font-weight: 600;
    position: relative;
}

.footer-section h4::after {
    content: '';
    position: absolute;
    bottom: -5px;
    left: 0;
    width: 30px;
    height: 2px;
    background: linear-gradient(90deg, #3b82f6, #60a5fa);
    border-radius: 1px;
}

.footer-links {
    list-style: none;
}

.footer-links li {
    margin-bottom: clamp(8px, 1.5vw, 12px);
}

.footer-links a {
    color: #cbd5e1;
    text-decoration: none;
    transition: all 0.3s ease;
    padding: clamp(4px, 1vw, 8px) 0;
    display: block;
    font-size: clamp(13px, 2vw, 15px);
    line-height: 1.4;
    position: relative;
}

.footer-links a:hover {
    color: #60a5fa;
    padding-left: clamp(5px, 1vw, 10px);
    transform: translateX(5px);
}

.footer-links a::before {
    content: '→';
    position: absolute;
    left: -15px;
    opacity: 0;
    transition: all 0.3s ease;
    color: #3b82f6;
}

.footer-links a:hover::before {
    opacity: 1;
    left: -20px;
}

.footer-logo h3 {
    color: #fbbf24;
    margin-bottom: clamp(8px, 1.5vw, 15px);
    font-size: clamp(20px, 3vw, 26px);
    text-shadow: 0 2px 4px rgba(0,0,0,0.3);
}

.company-description p {
    color: #94a3b8;
    margin-bottom: clamp(15px, 2.5vw, 25px);
    font-size: clamp(13px, 2vw, 15px);
    line-height: 1.6;
}

.social-links h4 {
    margin-bottom: clamp(12px, 2vw, 20px);
    font-size: clamp(14px, 2.5vw, 18px);
}

.social-icons {
    display: flex;
    gap: clamp(10px, 2vw, 15px);
}

.social-icon {
    color: #60a5fa;
    font-size: clamp(16px, 2.5vw, 20px);
    transition: all 0.3s ease;
    padding: clamp(8px, 1.5vw, 12px);
    border-radius: 50%;
    background: rgba(96, 165, 250, 0.1);
    display: flex;
    align-items: center;
    justify-content: center;
    width: clamp(32px, 5vw, 44px);
    height: clamp(32px, 5vw, 44px);
    border: 1px solid rgba(96, 165, 250, 0.2);
}

.social-icon:hover {
    color: white;
    background: linear-gradient(135deg, #3b82f6, #60a5fa);
    transform: translateY(-3px) scale(1.1);
    box-shadow: 0 8px 20px rgba(59, 130, 246, 0.3);
}

.contact-info .contact-item {
    color: #94a3b8;
    margin-bottom: clamp(12px, 2vw, 20px);
    display: flex;
    align-items: flex-start;
    font-size: clamp(13px, 2vw, 15px);
    line-height: 1.4;
}

.contact-info .contact-item i {
    color: #60a5fa;
    margin-right: clamp(8px, 1.5vw, 15px);
    min-width: clamp(16px, 2.5vw, 20px);
    margin-top: 2px;
}

.footer-bottom {
    border-top: 1px solid #475569;
    padding: clamp(15px, 3vw, 25px) 0;
    background: rgba(15, 23, 42, 0.8);
    backdrop-filter: blur(10px);
}

.footer-bottom-content {
    display: flex;
    justify-content: space-between;
    align-items: center;
    flex-wrap: wrap;
    gap: clamp(15px, 3vw, 25px);
}

.copyright {
    color: #64748b;
    font-size: clamp(12px, 2vw, 14px);
}

.footer-bottom-links {
    display: flex;
    gap: clamp(15px, 2.5vw, 25px);
    flex-wrap: wrap;
}

.footer-bottom-links a {
    color: #64748b;
    text-decoration: none;
    transition: color 0.3s ease;
    font-size: clamp(12px, 2vw, 14px);
    padding: clamp(4px, 1vw, 8px);
    border-radius: 4px;
}

.footer-bottom-links a:hover {
    color: #60a5fa;
    background: rgba(96, 165, 250, 0.1);
}

/* 响应式设计 - 完整的移动端适配 */
@media (max-width: 1200px) {
    .footer-grid {
        grid-template-columns: repeat(5, 1fr);
        gap: clamp(20px, 3vw, 30px);
    }
    
    .dropdown-menu {
        min-width: clamp(500px, 70vw, 700px);
    }
}

@media (max-width: 1000px) {
    .footer-grid {
        grid-template-columns: repeat(4, 1fr);
        gap: clamp(25px, 4vw, 35px);
    }
    
    .dropdown-menu {
        min-width: clamp(400px, 60vw, 600px);
    }
    
    .dropdown-content {
        grid-template-columns: repeat(2, 1fr);
        gap: clamp(20px, 3vw, 30px);
        padding: clamp(20px, 3vw, 30px);
    }
}

@media (max-width: 768px) {
    /* 移动端导航 */
    .nav-menu {
        display: none;
        position: fixed;
        top: 0;
        left: 0;
        right: 0;
        bottom: 0;
        background: rgba(30, 58, 138, 0.98);
        backdrop-filter: blur(10px);
        flex-direction: column;
        justify-content: center;
        align-items: center;
        padding: 20px;
        z-index: 999;
    }
    
    .nav-menu.active {
        display: flex;
        animation: slideIn 0.3s ease-out;
    }
    
    @keyframes slideIn {
        from {
            opacity: 0;
            transform: translateY(-20px);
        }
        to {
            opacity: 1;
            transform: translateY(0);
        }
    }
    
    .nav-item {
        margin: clamp(15px, 3vw, 25px) 0;
        text-align: center;
    }
    
    .nav-link {
        font-size: clamp(18px, 4vw, 24px);
        padding: clamp(15px, 3vw, 20px);
    }
    
    .mobile-menu-toggle {
        display: block;
    }
    
    /* 移动端下拉菜单 */
    .dropdown-menu {
        position: static;
        opacity: 1;
        visibility: visible;
        transform: none;
        margin-top: clamp(10px, 2vw, 20px);
        min-width: auto;
        background: rgba(255, 255, 255, 0.1);
        backdrop-filter: blur(10px);
    }
    
    .dropdown-content {
        grid-template-columns: 1fr;
        gap: clamp(15px, 2.5vw, 25px);
        padding: clamp(15px, 2.5vw, 25px);
    }
    
    .dropdown-section h3 {
        color: white;
        text-align: center;
    }
    
    .dropdown-section ul li a {
        color: #e2e8f0;
        text-align: center;
    }
    
    .dropdown-section ul li a:hover {
        color: #fbbf24;
    }
    
    /* 移动端英雄区域 */
    .hero {
        grid-template-columns: 1fr;
        text-align: center;
        padding: clamp(100px, 20vw, 150px) 0 clamp(60px, 10vw, 100px);
        gap: clamp(30px, 6vw, 50px);
    }
    
    .hero-content h1 {
        font-size: clamp(2rem, 8vw, 3rem);
    }
    
    .hero-content p {
        font-size: clamp(16px, 4vw, 20px);
    }
    
    .hero-buttons {
        justify-content: center;
        flex-direction: column;
        align-items: center;
    }
    
    .hero-buttons .btn {
        width: 100%;
        max-width: 300px;
    }
    
    /* 移动端联系区域 */
    .contact-content {
        grid-template-columns: 1fr;
        gap: clamp(30px, 6vw, 50px);
    }
    
    /* 移动端footer */
    .footer-grid {
        grid-template-columns: repeat(2, 1fr);
        gap: clamp(30px, 5vw, 40px);
    }
    
    .footer-bottom-content {
        flex-direction: column;
        text-align: center;
    }
    
    /* 移动端按钮动画 */
    .mobile-menu-toggle.active span:nth-child(1) {
        transform: rotate(45deg) translate(5px, 5px);
    }
    
    .mobile-menu-toggle.active span:nth-child(2) {
        opacity: 0;
    }
    
    .mobile-menu-toggle.active span:nth-child(3) {
        transform: rotate(-45deg) translate(7px, -6px);
    }
    
    .mobile-menu-toggle span {
        display: block;
        width: 25px;
        height: 3px;
        background-color: white;
        margin: 5px 0;
        transition: 0.3s;
    }
}

@media (max-width: 600px) {
    .container {
        padding: 0 clamp(10px, 3vw, 20px);
    }
    
    .hero-content h1 {
        font-size: clamp(1.8rem, 7vw, 2.5rem);
    }
    
    .hero-content p {
        font-size: clamp(14px, 3.5vw, 18px);
    }
    
    .section-title {
        font-size: clamp(1.5rem, 6vw, 2.5rem);
        margin-bottom: clamp(30px, 6vw, 50px);
    }
    
    .features-grid {
        grid-template-columns: 1fr;
        gap: clamp(20px, 4vw, 30px);
    }
    
    .products-grid {
        grid-template-columns: 1fr;
        gap: clamp(20px, 4vw, 30px);
    }
    
    .stats-grid {
        grid-template-columns: repeat(2, 1fr);
        gap: clamp(20px, 4vw, 30px);
    }
    
    .contact-form {
        padding: clamp(20px, 4vw, 30px);
    }
    
    .footer-grid {
        grid-template-columns: 1fr;
        gap: clamp(25px, 5vw, 35px);
    }
    
    .footer-main {
        padding: clamp(40px, 8vw, 60px) 0 clamp(30px, 6vw, 50px);
    }
}

@media (max-width: 480px) {
    .hero {
        padding: clamp(80px, 15vw, 120px) 0 clamp(40px, 8vw, 60px);
    }
    
    .hero-content h1 {
        font-size: clamp(1.5rem, 6vw, 2rem);
    }
    
    .hero-content p {
        font-size: clamp(14px, 3vw, 16px);
    }
    
    .btn {
        padding: clamp(12px, 3vw, 16px) clamp(20px, 4vw, 24px);
        font-size: clamp(14px, 3vw, 16px);
    }
    
    .feature-card {
        padding: clamp(25px, 5vw, 35px) clamp(20px, 4vw, 30px);
    }
    
    .product-card img {
        height: clamp(300px, 40vw, 220px);
    }
    
    .stat-number {
        font-size: clamp(2rem, 5vw, 3rem);
    }
    
    .stat-label {
        font-size: clamp(12px, 2.5vw, 16px);
    }
}

/* 超小屏幕适配 */
@media (max-width: 360px) {
    .hero-content h1 {
        font-size: clamp(1.3rem, 5vw, 1.8rem);
    }
    
    .hero-content p {
        font-size: clamp(13px, 2.5vw, 15px);
    }
    
    .btn {
        padding: clamp(10px, 2.5vw, 14px) clamp(16px, 3.5vw, 20px);
        font-size: clamp(13px, 2.5vw, 15px);
    }
    
    .footer-grid {
        gap: clamp(20px, 4vw, 30px);
    }
}

/* 横屏模式适配 */
@media (orientation: landscape) and (max-height: 600px) {
    .hero {
        min-height: auto;
        padding: clamp(60px, 10vw, 100px) 0;
    }
    
    .hero-content h1 {
        font-size: clamp(1.8rem, 4vw, 2.5rem);
    }
    
    .hero-content p {
        font-size: clamp(14px, 2.5vw, 18px);
    }
}

/* 高分辨率屏幕适配 */
@media (min-resolution: 2dppx) {
    .hero-image img,
    .product-card img {
        image-rendering: -webkit-optimize-contrast;
        image-rendering: crisp-edges;
    }
}

/* 减少动画（用户偏好） */
@media (prefers-reduced-motion: reduce) {
    * {
        animation-duration: 0.01ms !important;
        animation-iteration-count: 1 !important;
        transition-duration: 0.01ms !important;
    }
}

/* 高对比度模式 */
@media (prefers-contrast: high) {
    .btn-primary {
        border: 2px solid #1e3a8a;
    }
    
    .btn-outline {
        border-width: 3px;
    }
    
    .footer-section h4::after {
        height: 3px;
    }
}

/* 打印样式 */
@media print {
    .header,
    .footer,
    .btn,
    .mobile-menu-toggle,
    .social-icons {
        display: none !important;
    }
    
    body {
        font-size: 12pt;
        line-height: 1.4;
        color: #000;
        background: white;
    }
    
    .hero {
        min-height: auto;
        padding: 40px 0;
        background: white !important;
        color: #000 !important;
    }
    
    .features,
    .products-preview,
    .statistics,
    .contact {
        background: white !important;
        color: #000 !important;
    }
    
    .feature-card,
    .product-card {
        box-shadow: none;
        border: 1px solid #ccc;
    }
}

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

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

/* 加载状态 */
.loading {
    opacity: 0.6;
    pointer-events: none;
}

/* 成功/错误消息 */
.message {
    padding: clamp(12px, 2.5vw, 18px);
    border-radius: 6px;
    margin-bottom: clamp(15px, 3vw, 25px);
    font-size: clamp(14px, 2.5vw, 16px);
}

.message.success {
    background: #d1fae5;
    color: #065f46;
    border: 1px solid #a7f3d0;
}

.message.error {
    background: #fee2e2;
    color: #991b1b;
    border: 1px solid #fca5a5;
}

/* 表单验证样式 */
.field-error {
    color: #dc2626;
    font-size: clamp(12px, 2vw, 14px);
    margin-top: 5px;
}

.form-group input.error,
.form-group textarea.error {
    border-color: #dc2626;
}

/* 图片懒加载 */
img[loading="lazy"] {
    opacity: 0;
    transition: opacity 0.3s ease;
}

img[loading="lazy"].loaded {
    opacity: 1;
}

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

::-webkit-scrollbar-track {
    background: #f1f1f1;
}

::-webkit-scrollbar-thumb {
    background: #1e3a8a;
    border-radius: 4px;
}

::-webkit-scrollbar-thumb:hover {
    background: #1e40af;
}

/* 选择文本样式 */
::selection {
    background: #1e3a8a;
    color: white;
}

::-moz-selection {
    background: #1e3a8a;
    color: white;
}

/* 焦点样式 */
:focus {
    outline: 2px solid #1e3a8a;
    outline-offset: 2px;
}

/* 平滑滚动 */
html {
    scroll-behavior: smooth;
}

/* 移动端触摸优化 */
@media (hover: none) and (pointer: coarse) {
    .btn:hover {
        transform: none;
    }
    
    .feature-card:hover,
    .product-card:hover {
        transform: none;
    }
    
    .social-icon:hover {
        transform: none;
    }
}

/* 深色模式支持 */
@media (prefers-color-scheme: dark) {
    body {
        background-color: #0f172a;
        color: #e2e8f0;
    }
    
    .features,
    .products-preview,
    .contact {
        background: #1e293b;
    }
    
    .feature-card,
    .product-card,
    .contact-form {
        background: #334155;
        color: #e2e8f0;
    }
}


/* ===== 页面通用样式 ===== */

/* 页面头部 */
.page-header {
    background: linear-gradient(135deg, #1e3a8a 0%, #3b82f6 100%);
    color: white;
    padding: 120px 0 80px;
    margin-top: 80px;
    text-align: center;
    position: relative;
    overflow: hidden;
}

.page-header::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 0 100 100"><defs><pattern id="grain" width="100" height="100" patternUnits="userSpaceOnUse"><circle cx="50" cy="50" r="1" fill="rgba(255,255,255,0.1)"/></pattern></defs><rect width="100" height="100" fill="url(%23grain)"/></svg>');
    opacity: 0.3;
}

.page-header .container {
    position: relative;
    z-index: 2;
}

.page-header h1 {
    font-size: clamp(2.5rem, 6vw, 4rem);
    font-weight: 700;
    margin-bottom: 20px;
    text-shadow: 0 2px 4px rgba(0,0,0,0.3);
}

.page-header p {
    font-size: clamp(1.1rem, 2.5vw, 1.3rem);
    opacity: 0.9;
    max-width: 600px;
    margin: 0 auto;
}

/* ===== 关于我们页面样式 ===== */

/* 公司故事部分 */
.company-story {
    padding: 80px 0;
    background: #f8fafc;
}

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

.story-text h2 {
    font-size: clamp(2rem, 4vw, 2.5rem);
    color: #1e3a8a;
    margin-bottom: 25px;
}

.story-text p {
    font-size: 1.1rem;
    color: #666;
    line-height: 1.7;
    margin-bottom: 20px;
}

.story-stats {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: 20px;
    margin-top: 30px;
}

.story-stats .stat-item {
    text-align: center;
    padding: 20px;
    background: white;
    border-radius: 12px;
    box-shadow: 0 5px 20px rgba(0,0,0,0.08);
}

.story-stats .stat-number {
    font-size: 2rem;
    font-weight: 700;
    color: #1e3a8a;
    margin-bottom: 5px;
}

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

.story-image img {
    width: 100%;
    border-radius: 12px;
    box-shadow: 0 15px 40px rgba(0,0,0,0.15);
}

/* 价值观部分 */
.values-section {
    padding: 80px 0;
    background: white;
}

.values-section h2 {
    text-align: center;
    font-size: clamp(2rem, 4vw, 2.5rem);
    color: #1e3a8a;
    margin-bottom: 50px;
}

.values-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(280px, 1fr));
    gap: 30px;
}

.value-card {
    text-align: center;
    padding: 40px 30px;
    background: #f8fafc;
    border-radius: 16px;
    transition: all 0.3s ease;
    border: 2px solid transparent;
}

.value-card:hover {
    transform: translateY(-5px);
    border-color: #1e3a8a;
    box-shadow: 0 15px 40px rgba(30, 58, 138, 0.15);
}

.value-icon {
    width: 80px;
    height: 80px;
    background: linear-gradient(135deg, #1e3a8a, #3b82f6);
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    margin: 0 auto 25px;
}

.value-icon i {
    font-size: 36px;
    color: white;
}

.value-card h3 {
    font-size: 1.5rem;
    color: #1e3a8a;
    margin-bottom: 15px;
}

.value-card p {
    color: #666;
    line-height: 1.6;
}

/* 团队部分 */
.team-section {
    padding: 80px 0;
    background: #f8fafc;
}

.team-section h2 {
    text-align: center;
    font-size: clamp(2rem, 4vw, 2.5rem);
    color: #1e3a8a;
    margin-bottom: 50px;
}

.team-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
    gap: 40px;
}

.team-member {
    background: white;
    border-radius: 16px;
    overflow: hidden;
    box-shadow: 0 10px 30px rgba(0,0,0,0.1);
    transition: transform 0.3s ease;
}

.team-member:hover {
    transform: translateY(-5px);
}

.member-photo {
    width: 100%;
    height: 250px;
    overflow: hidden;
}

.member-photo img {
    width: 100%;
    height: 100%;
    object-fit: cover;
    transition: transform 0.3s ease;
}

.team-member:hover .member-photo img {
    transform: scale(1.05);
}

.member-info {
    padding: 25px;
}

.member-info h3 {
    font-size: 1.4rem;
    color: #1e3a8a;
    margin-bottom: 8px;
}

.position {
    color: #fbbf24;
    font-weight: 600;
    margin-bottom: 15px;
    font-size: 1rem;
}

.bio {
    color: #666;
    line-height: 1.6;
}

/* 认证部分 */
.certifications-section {
    padding: 80px 0;
    background: white;
}

.certifications-section h2 {
    text-align: center;
    font-size: clamp(2rem, 4vw, 2.5rem);
    color: #1e3a8a;
    margin-bottom: 50px;
}

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

.cert-item {
    text-align: center;
    padding: 30px 20px;
    background: #f8fafc;
    border-radius: 12px;
    transition: all 0.3s ease;
}

.cert-item:hover {
    transform: translateY(-3px);
    box-shadow: 0 10px 30px rgba(0,0,0,0.1);
}

.cert-item img {
    width: 80px;
    height: 80px;
    margin-bottom: 20px;
}

.cert-item h3 {
    font-size: 1.2rem;
    color: #1e3a8a;
    margin-bottom: 10px;
}

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

/* ===== 联系我们页面样式 ===== */

/* 联系信息部分 */
.contact-info-section {
    padding: 80px 0;
    background: #f8fafc;
}

.contact-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(280px, 1fr));
    gap: 30px;
}

.contact-card {
    background: white;
    padding: 40px 30px;
    border-radius: 16px;
    text-align: center;
    box-shadow: 0 10px 30px rgba(0,0,0,0.08);
    transition: transform 0.3s ease;
}

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

.contact-icon {
    width: 80px;
    height: 80px;
    background: linear-gradient(135deg, #1e3a8a, #3b82f6);
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    margin: 0 auto 25px;
}

.contact-icon i {
    font-size: 32px;
    color: white;
}

.contact-card h3 {
    font-size: 1.4rem;
    color: #1e3a8a;
    margin-bottom: 15px;
}

.contact-card p {
    color: #666;
    line-height: 1.6;
    margin-bottom: 8px;
}

/* 联系表单部分 */
.contact-form-section {
    padding: 80px 0;
    background: white;
}

.form-container {
    display: grid;
    grid-template-columns: 2fr 1fr;
    gap: 60px;
    align-items: start;
}

.form-content h2 {
    font-size: clamp(2rem, 4vw, 2.5rem);
    color: #1e3a8a;
    margin-bottom: 15px;
}

.form-content p {
    color: #666;
    margin-bottom: 40px;
    font-size: 1.1rem;
}

.contact-form {
    background: #f8fafc;
    padding: 40px;
    border-radius: 16px;
}

.form-row {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 20px;
    margin-bottom: 20px;
}

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

.form-group label {
    display: block;
    margin-bottom: 8px;
    color: #1e3a8a;
    font-weight: 600;
}

.form-group input,
.form-group select,
.form-group textarea {
    width: 100%;
    padding: 15px;
    border: 2px solid #e5e7eb;
    border-radius: 8px;
    font-size: 16px;
    transition: border-color 0.3s ease;
    font-family: inherit;
}

.form-group input:focus,
.form-group select:focus,
.form-group textarea:focus {
    outline: none;
    border-color: #1e3a8a;
    box-shadow: 0 0 0 3px rgba(30, 58, 138, 0.1);
}

.checkbox-label {
    display: flex;
    align-items: flex-start;
    gap: 12px;
    cursor: pointer;
    font-size: 14px;
    color: #666;
}

.checkbox-label input[type="checkbox"] {
    width: auto;
    margin-top: 2px;
}

/* 侧边栏 */
.form-sidebar {
    display: flex;
    flex-direction: column;
    gap: 30px;
}

.sidebar-card {
    background: #f8fafc;
    padding: 30px;
    border-radius: 16px;
    border-left: 4px solid #1e3a8a;
}

.sidebar-card h3 {
    color: #1e3a8a;
    margin-bottom: 15px;
    font-size: 1.2rem;
}

.sidebar-card ul {
    list-style: none;
    margin: 0;
    padding: 0;
}

.sidebar-card li {
    display: flex;
    align-items: center;
    gap: 10px;
    margin-bottom: 10px;
    color: #666;
}

.sidebar-card i {
    color: #10b981;
    font-size: 14px;
}

.emergency-contact {
    display: flex;
    align-items: center;
    gap: 10px;
    margin-top: 15px;
    padding: 15px;
    background: #fef3c7;
    border-radius: 8px;
}

.emergency-contact i {
    color: #d97706;
    font-size: 18px;
}

.emergency-contact span {
    color: #92400e;
    font-weight: 600;
}

/* 地图部分 */
.map-section {
    padding: 80px 0;
    background: #f8fafc;
}

.map-section h2 {
    text-align: center;
    font-size: clamp(2rem, 4vw, 2.5rem);
    color: #1e3a8a;
    margin-bottom: 40px;
}

.map-container {
    border-radius: 16px;
    overflow: hidden;
    box-shadow: 0 15px 40px rgba(0,0,0,0.1);
}

/* ===== 产品页面样式 ===== */

/* 产品概览 */
.product-overview {
    padding: 80px 0;
    background: #f8fafc;
}

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

.overview-text h2 {
    font-size: clamp(2rem, 4vw, 2.5rem);
    color: #1e3a8a;
    margin-bottom: 20px;
}

.overview-text p {
    font-size: 1.1rem;
    color: #666;
    line-height: 1.7;
    margin-bottom: 30px;
}

.features-list {
    display: flex;
    flex-direction: column;
    gap: 15px;
}

.feature-item {
    display: flex;
    align-items: center;
    gap: 15px;
    font-size: 1rem;
    color: #1e3a8a;
}

.feature-item i {
    color: #10b981;
    font-size: 18px;
}

.overview-image img {
    width: 100%;
    border-radius: 16px;
    box-shadow: 0 15px 40px rgba(0,0,0,0.15);
}

/* 产品分类 */
.product-categories {
    padding: 80px 0;
    background: white;
}

.product-categories h2 {
    text-align: center;
    font-size: clamp(2rem, 4vw, 2.5rem);
    color: #1e3a8a;
    margin-bottom: 50px;
}

.categories-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(350px, 1fr));
    gap: 40px;
}

.category-card {
    background: white;
    border-radius: 16px;
    overflow: hidden;
    box-shadow: 0 10px 30px rgba(0,0,0,0.1);
    transition: transform 0.3s ease;
}

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

.category-image {
    width: 100%;
    height: 250px;
    overflow: hidden;
}

.category-image img {
    width: 100%;
    height: 100%;
    object-fit: cover;
    transition: transform 0.3s ease;
}

.category-card:hover .category-image img {
    transform: scale(1.05);
}

.category-content {
    padding: 30px;
}

.category-content h3 {
    font-size: 1.5rem;
    color: #1e3a8a;
    margin-bottom: 15px;
}

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

.category-content ul {
    list-style: none;
    margin: 0;
    padding: 0;
    margin-bottom: 25px;
}

.category-content li {
    padding: 5px 0;
    color: #666;
    position: relative;
    padding-left: 20px;
}

.category-content li::before {
    content: '✓';
    position: absolute;
    left: 0;
    color: #10b981;
    font-weight: bold;
}

/* 技术规格 */
.tech-specs {
    padding: 80px 0;
    background: #f8fafc;
}

.tech-specs h2 {
    text-align: center;
    font-size: clamp(2rem, 4vw, 2.5rem);
    color: #1e3a8a;
    margin-bottom: 50px;
}

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

.spec-item {
    background: white;
    padding: 40px 30px;
    border-radius: 16px;
    text-align: center;
    box-shadow: 0 10px 30px rgba(0,0,0,0.08);
    transition: transform 0.3s ease;
}

.spec-item:hover {
    transform: translateY(-3px);
}

.spec-icon {
    width: 80px;
    height: 80px;
    background: linear-gradient(135deg, #1e3a8a, #3b82f6);
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    margin: 0 auto 25px;
}

.spec-icon i {
    font-size: 32px;
    color: white;
}

.spec-item h3 {
    font-size: 1.2rem;
    color: #1e3a8a;
    margin-bottom: 10px;
}

.spec-item p {
    color: #666;
    font-size: 1.1rem;
    font-weight: 600;
}

/* ===== 解决方案页面样式 ===== */

/* 解决方案概览 */
.solution-overview {
    padding: 80px 0;
    background: #f8fafc;
}

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

.overview-text h2 {
    font-size: clamp(2rem, 4vw, 2.5rem);
    color: #1e3a8a;
    margin-bottom: 20px;
}

.overview-text p {
    font-size: 1.1rem;
    color: #666;
    line-height: 1.7;
    margin-bottom: 30px;
}

.benefits-list {
    display: flex;
    flex-direction: column;
    gap: 15px;
}

.benefit-item {
    display: flex;
    align-items: center;
    gap: 15px;
    font-size: 1rem;
    color: #1e3a8a;
}

.benefit-item i {
    color: #10b981;
    font-size: 18px;
}

.overview-image img {
    width: 100%;
    border-radius: 16px;
    box-shadow: 0 15px 40px rgba(0,0,0,0.15);
}

/* 应用领域 */
.application-areas {
    padding: 80px 0;
    background: white;
}

.application-areas h2 {
    text-align: center;
    font-size: clamp(2rem, 4vw, 2.5rem);
    color: #1e3a8a;
    margin-bottom: 50px;
}

.areas-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
    gap: 30px;
}

.area-card {
    background: #f8fafc;
    padding: 40px 30px;
    border-radius: 16px;
    text-align: center;
    transition: all 0.3s ease;
    border: 2px solid transparent;
}

.area-card:hover {
    transform: translateY(-5px);
    border-color: #1e3a8a;
    box-shadow: 0 15px 40px rgba(30, 58, 138, 0.15);
}

.area-icon {
    width: 80px;
    height: 80px;
    background: linear-gradient(135deg, #1e3a8a, #3b82f6);
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    margin: 0 auto 25px;
}

.area-icon i {
    font-size: 32px;
    color: white;
}

.area-card h3 {
    font-size: 1.4rem;
    color: #1e3a8a;
    margin-bottom: 15px;
}

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

.area-card ul {
    list-style: none;
    margin: 0;
    padding: 0;
    text-align: left;
}

.area-card li {
    padding: 5px 0;
    color: #666;
    position: relative;
    padding-left: 20px;
}

.area-card li::before {
    content: '✓';
    position: absolute;
    left: 0;
    color: #10b981;
    font-weight: bold;
}

/* 流程部分 */
.process-section {
    padding: 80px 0;
    background: #f8fafc;
}

.process-section h2 {
    text-align: center;
    font-size: clamp(2rem, 4vw, 2.5rem);
    color: #1e3a8a;
    margin-bottom: 50px;
}

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

.step {
    display: flex;
    align-items: flex-start;
    gap: 20px;
    padding: 30px;
    background: white;
    border-radius: 16px;
    box-shadow: 0 10px 30px rgba(0,0,0,0.08);
}

.step-number {
    width: 50px;
    height: 50px;
    background: linear-gradient(135deg, #1e3a8a, #3b82f6);
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    color: white;
    font-weight: 700;
    font-size: 1.2rem;
    flex-shrink: 0;
}

.step-content h3 {
    font-size: 1.3rem;
    color: #1e3a8a;
    margin-bottom: 10px;
}

.step-content p {
    color: #666;
    line-height: 1.6;
}

/* ===== 通用CTA部分 ===== */

.cta-section {
    padding: 80px 0;
    background: linear-gradient(135deg, #1e3a8a 0%, #3b82f6 100%);
    color: white;
    text-align: center;
}

.cta-content h2 {
    font-size: clamp(2rem, 4vw, 2.5rem);
    margin-bottom: 20px;
}

.cta-content p {
    font-size: 1.2rem;
    margin-bottom: 40px;
    opacity: 0.9;
}

.cta-buttons {
    display: flex;
    gap: 20px;
    justify-content: center;
    flex-wrap: wrap;
}

.cta-buttons .btn {
    min-width: 180px;
}

/* ===== 响应式设计 ===== */

@media (max-width: 1024px) {
    .form-container {
        grid-template-columns: 1fr;
        gap: 40px;
    }
    
    .story-content,
    .overview-content {
        gap: 40px;
    }
}

@media (max-width: 768px) {
    .page-header {
        padding: 100px 0 60px;
        margin-top: 70px;
    }
    
    .story-content,
    .overview-content {
        grid-template-columns: 1fr;
        text-align: center;
    }
    
    .story-stats {
        grid-template-columns: repeat(2, 1fr);
    }
    
    .form-row {
        grid-template-columns: 1fr;
    }
    
    .cta-buttons {
        flex-direction: column;
        align-items: center;
    }
    
    .cta-buttons .btn {
        width: 100%;
        max-width: 300px;
    }
}

@media (max-width: 480px) {
    .page-header {
        padding: 80px 0 50px;
    }
    
    .story-stats {
        grid-template-columns: 1fr;
    }
    
    .contact-form {
        padding: 25px;
    }
    
    .sidebar-card {
        padding: 20px;
    }
}

/* ===== 商业解决方案页面样式 ===== */

/* 页面头部 */
.page-header {
    background: linear-gradient(135deg, #1e3a8a 0%, #3b82f6 100%);
    color: white;
    padding: 120px 0 80px;
    margin-top: 80px;
    text-align: center;
    position: relative;
    overflow: hidden;
}



.page-header h1 {
    font-size: clamp(2.5rem, 6vw, 4rem);
    font-weight: 700;
    margin-bottom: 20px;
    position: relative;
    z-index: 2;
}

.page-header p {
    font-size: 1.2rem;
    opacity: 0.9;
    max-width: 600px;
    margin: 0 auto;
    position: relative;
    z-index: 2;
    line-height: 1.6;
}

/* 解决方案概览区域 */
.solution-overview {
    padding: 80px 0;
    background: #f8fafc;
}

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

.overview-text h2 {
    font-size: clamp(2rem, 4vw, 3rem);
    color: #1e293b;
    margin-bottom: 25px;
    font-weight: 700;
    line-height: 1.2;
}

.overview-text p {
    color: #64748b;
    line-height: 1.8;
    margin-bottom: 30px;
    font-size: 1.1rem;
}

.benefits-list {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 20px;
}

.benefit-item {
    display: flex;
    align-items: center;
    gap: 15px;
    padding: 20px;
    background: white;
    border-radius: 12px;
    box-shadow: 0 4px 6px rgba(0,0,0,0.05);
    transition: all 0.3s ease;
    border: 1px solid #e2e8f0;
}

.benefit-item:hover {
    transform: translateY(-3px);
    box-shadow: 0 8px 15px rgba(0,0,0,0.1);
    border-color: #1e3a8a;
}

.benefit-item i {
    color: #1e3a8a;
    font-size: 1.3rem;
    width: 24px;
    text-align: center;
}

.benefit-item span {
    color: #374151;
    font-weight: 600;
    font-size: 0.95rem;
}

.overview-image {
    border-radius: 16px;
    overflow: hidden;
    box-shadow: 0 20px 40px rgba(0,0,0,0.1);
    position: relative;
}

.overview-image img {
    width: 100%;
    height: auto;
    display: block;
    transition: transform 0.3s ease;
}

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

/* 商业应用区域 */
.commercial-applications {
    padding: 80px 0;
    background: white;
}

.commercial-applications h2 {
    text-align: center;
    font-size: clamp(2rem, 4vw, 3rem);
    color: #1e293b;
    margin-bottom: 50px;
    font-weight: 700;
}

.applications-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(350px, 1fr));
    gap: 40px;
}

.application-card {
    background: white;
    padding: 40px 30px;
    border-radius: 16px;
    box-shadow: 0 4px 6px rgba(0,0,0,0.05);
    border: 1px solid #e2e8f0;
    transition: all 0.3s ease;
    text-align: center;
    position: relative;
    overflow: hidden;
}

.application-card::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    height: 4px;
    background: linear-gradient(90deg, #1e3a8a, #3b82f6);
    transform: scaleX(0);
    transition: transform 0.3s ease;
}

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

.application-card:hover {
    transform: translateY(-8px);
    box-shadow: 0 25px 50px rgba(0,0,0,0.15);
    border-color: #1e3a8a;
}

.application-icon {
    width: 80px;
    height: 80px;
    background: linear-gradient(135deg, #1e3a8a, #3b82f6);
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    margin: 0 auto 25px;
    color: white;
    font-size: 2rem;
    transition: all 0.3s ease;
}

.application-card:hover .application-icon {
    transform: scale(1.1);
    box-shadow: 0 10px 20px rgba(30, 58, 138, 0.3);
}

.application-card h3 {
    font-size: 1.5rem;
    color: #1e293b;
    margin-bottom: 15px;
    font-weight: 600;
}

.application-card p {
    color: #64748b;
    line-height: 1.7;
    margin-bottom: 25px;
}

.application-card ul {
    list-style: none;
    margin-bottom: 25px;
    text-align: left;
}

.application-card li {
    padding: 10px 0;
    color: #475569;
    position: relative;
    padding-left: 30px;
    font-size: 0.95rem;
}

.application-card li::before {
    content: '✓';
    position: absolute;
    left: 0;
    color: #10b981;
    font-weight: bold;
    font-size: 1.1rem;
    background: #ecfdf5;
    width: 20px;
    height: 20px;
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 0.8rem;
}

/* 技术特性区域 */
.technical-features {
    padding: 80px 0;
    background: #f8fafc;
}

.technical-features h2 {
    text-align: center;
    font-size: clamp(2rem, 4vw, 3rem);
    color: #1e293b;
    margin-bottom: 50px;
    font-weight: 700;
}

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

.feature-item {
    background: white;
    padding: 40px 30px;
    border-radius: 16px;
    text-align: center;
    box-shadow: 0 4px 6px rgba(0,0,0,0.05);
    transition: all 0.3s ease;
    border: 1px solid #e2e8f0;
    position: relative;
}

.feature-item:hover {
    transform: translateY(-5px);
    box-shadow: 0 15px 30px rgba(0,0,0,0.1);
    border-color: #1e3a8a;
}

.feature-icon {
    width: 70px;
    height: 70px;
    background: #1e3a8a;
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    margin: 0 auto 25px;
    color: white;
    font-size: 1.5rem;
    transition: all 0.3s ease;
}

.feature-item:hover .feature-icon {
    background: linear-gradient(135deg, #1e3a8a, #3b82f6);
    transform: scale(1.1);
}

.feature-item h3 {
    font-size: 1.3rem;
    color: #1e293b;
    margin-bottom: 15px;
    font-weight: 600;
}

.feature-item p {
    color: #64748b;
    line-height: 1.6;
}

/* 行动号召区域 */
.cta-section {
    padding: 80px 0;
    background: linear-gradient(135deg, #1e3a8a 0%, #3b82f6 100%);
    color: white;
    text-align: center;
    position: relative;
    overflow: hidden;
}

.cta-section::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 0 100 100"><defs><pattern id="grain2" width="100" height="100" patternUnits="userSpaceOnUse"><circle cx="50" cy="50" r="1" fill="rgba(255,255,255,0.1)"/></pattern></defs><rect width="100" height="100" fill="url(%23grain2)"/></svg>');
    opacity: 0.2;
}

.cta-content {
    position: relative;
    z-index: 2;
}

.cta-content h2 {
    font-size: clamp(2rem, 4vw, 3rem);
    margin-bottom: 20px;
    color: white;
    font-weight: 700;
}

.cta-content p {
    font-size: 1.2rem;
    margin-bottom: 30px;
    opacity: 0.9;
    max-width: 600px;
    margin-left: auto;
    margin-right: auto;
    line-height: 1.6;
}

.cta-buttons {
    display: flex;
    gap: 20px;
    justify-content: center;
    flex-wrap: wrap;
}

.cta-buttons .btn {
    min-width: 200px;
    padding: 15px 30px;
    font-weight: 600;
    transition: all 0.3s ease;
}


/* 响应式设计 */
@media (max-width: 768px) {
    .page-header {
        padding: 100px 0 60px;
        margin-top: 70px;
    }
    
    .overview-content {
        grid-template-columns: 1fr;
        gap: 40px;
    }
    
    .benefits-list {
        grid-template-columns: 1fr;
    }
    
    .applications-grid {
        grid-template-columns: 1fr;
    }
    
    .features-grid {
        grid-template-columns: repeat(auto-fit, minmax(200px, 1fr));
    }
    
    .cta-buttons {
        flex-direction: column;
        align-items: center;
    }
    
    .cta-buttons .btn {
        min-width: 250px;
    }
}

@media (max-width: 480px) {
    .solution-overview,
    .commercial-applications,
    .technical-features,
    .cta-section {
        padding: 60px 0;
    }
    
    .overview-text h2,
    .commercial-applications h2,
    .technical-features h2,
    .cta-content h2 {
        font-size: 1.8rem;
    }
    
    .application-card,
    .feature-item {
        padding: 30px 20px;
    }
    
    .benefit-item {
        padding: 15px;
    }
    
    .benefit-item span {
        font-size: 0.9rem;
    }
}

/* Case Product Details 样式 */
.case-product-details {
    padding: 80px 0;
    background: white;
}

.case-product-content {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 60px;
    align-items: flex-start;
}

/* 产品图片区域 */
.case-product-images {
    position: sticky;
    top: 20px;
}

.case-main-image {
    margin-bottom: 20px;
    border-radius: 15px;
    overflow: hidden;
    box-shadow: 0 10px 30px rgba(0,0,0,0.1);
}

.case-main-image img {
    width: 100%;
    height: auto;
    display: block;
    transition: transform 0.3s ease;
}

.case-main-image:hover img {
    transform: scale(1.02);
}

.case-thumbnail-images {
    display: flex;
    gap: 15px;
}

.case-thumbnail {
    width: 80px;
    height: 80px;
    border-radius: 10px;
    overflow: hidden;
    cursor: pointer;
    border: 3px solid transparent;
    transition: all 0.3s ease;
    opacity: 0.7;
}

.case-thumbnail.active,
.case-thumbnail:hover {
    border-color: #007bff;
    opacity: 1;
    transform: scale(1.05);
}

.case-thumbnail img {
    width: 100%;
    height: 100%;
    object-fit: cover;
}

/* 产品信息区域 */
.case-product-info h2 {
    font-size: 2.5rem;
    color: #2c3e50;
    margin-bottom: 20px;
    font-weight: 600;
    line-height: 1.2;
}

.case-product-description {
    font-size: 1.1rem;
    color: #6c757d;
    margin-bottom: 30px;
    line-height: 1.8;
}

/* 产品特性 */
.case-product-features h3 {
    font-size: 1.5rem;
    color: #2c3e50;
    margin-bottom: 20px;
    font-weight: 600;
}

.case-product-features ul {
    list-style: none;
    margin-bottom: 30px;
}

.case-product-features li {
    padding: 10px 0;
    color: #495057;
    display: flex;
    align-items: center;
    gap: 15px;
    border-bottom: 1px solid #f1f3f4;
}

.case-product-features li:last-child {
    border-bottom: none;
}

.case-product-features i {
    color: #28a745;
    font-size: 16px;
    width: 20px;
    text-align: center;
}

/* 产品规格 */
.case-product-specs h3 {
    font-size: 1.5rem;
    color: #2c3e50;
    margin-bottom: 20px;
    font-weight: 600;
}

.case-specs-grid {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 20px;
    margin-bottom: 30px;
}

.case-spec-item {
    background: #f8f9fa;
    padding: 15px;
    border-radius: 8px;
    border: 1px solid #e9ecef;
}

.case-spec-label {
    display: block;
    font-size: 0.9rem;
    color: #6c757d;
    margin-bottom: 5px;
    font-weight: 500;
}

.case-spec-value {
    display: block;
    font-size: 1rem;
    color: #2c3e50;
    font-weight: 600;
}

/* 产品操作按钮 */
.case-product-actions {
    display: flex;
    gap: 15px;
    flex-wrap: wrap;
}

.case-product-actions .btn {
    flex: 1;
    min-width: 150px;
    justify-content: center;
}

/* 相关产品 */
.case-related-products {
    padding: 80px 0;
    background: #f8f9fa;
}

.case-related-products h2 {
    text-align: center;
    font-size: 2.5rem;
    color: #2c3e50;
    margin-bottom: 50px;
    font-weight: 600;
    position: relative;
}

.case-related-products h2::after {
    content: '';
    position: absolute;
    bottom: -15px;
    left: 50%;
    transform: translateX(-50%);
    width: 80px;
    height: 3px;
    background: linear-gradient(135deg, #667eea, #764ba2);
    border-radius: 2px;
}

.case-products-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
    gap: 30px;
}

.case-product-card {
    background: white;
    border-radius: 15px;
    overflow: hidden;
    box-shadow: 0 8px 25px rgba(0,0,0,0.08);
    transition: all 0.3s ease;
    border: 1px solid #f1f3f4;
}

.case-product-card:hover {
    transform: translateY(-10px);
    box-shadow: 0 20px 50px rgba(0,0,0,0.15);
}

.case-product-card img {
    width: 100%;
    height: 200px;
    object-fit: cover;
    transition: transform 0.3s ease;
}

.case-product-card:hover img {
    transform: scale(1.05);
}

.case-product-card h3 {
    font-size: 1.3rem;
    color: #2c3e50;
    margin: 20px 20px 10px;
    font-weight: 600;
}

.case-product-card p {
    color: #6c757d;
    margin: 0 20px 20px;
    line-height: 1.6;
}

.case-product-card .btn {
    margin: 0 20px 20px;
    width: calc(100% - 40px);
    justify-content: center;
}

/* 按钮样式 */
.btn {
    display: inline-flex;
    align-items: center;
    gap: 8px;
    padding: 12px 24px;
    text-decoration: none;
    border-radius: 6px;
    font-weight: 500;
    text-align: center;
    transition: all 0.3s ease;
    border: 2px solid transparent;
    cursor: pointer;
    font-size: 14px;
}

.btn-primary {
    background: #007bff;
    color: white;
    border-color: #007bff;
}

.btn-primary:hover {
    background: #0056b3;
    border-color: #0056b3;
    transform: translateY(-2px);
}

.btn-outline {
    background: transparent;
    color: #007bff;
    border-color: #007bff;
}

.btn-outline:hover {
    background: #007bff;
    color: white;
    transform: translateY(-2px);
}

/* 响应式设计 */
@media (max-width: 1024px) {
    .case-product-content {
        gap: 40px;
    }
    
    .case-specs-grid {
        grid-template-columns: 1fr;
    }
}

@media (max-width: 768px) {
    .case-product-details {
        padding: 60px 0;
    }
    
    .case-product-content {
        grid-template-columns: 1fr;
        gap: 40px;
    }
    
    .case-product-images {
        position: static;
    }
    
    .case-product-info h2 {
        font-size: 2rem;
    }
    
    .case-product-actions {
        flex-direction: column;
    }
    
    .case-product-actions .btn {
        width: 100%;
    }
    
    .case-related-products {
        padding: 60px 0;
    }
    
    .case-related-products h2 {
        font-size: 2rem;
        margin-bottom: 40px;
    }
    
    .case-products-grid {
        grid-template-columns: 1fr;
        gap: 20px;
    }
}

@media (max-width: 480px) {
    .case-product-details {
        padding: 40px 0;
    }
    
    .case-product-info h2 {
        font-size: 1.8rem;
    }
    
    .case-product-description {
        font-size: 1rem;
    }
    
    .case-product-features h3,
    .case-product-specs h3 {
        font-size: 1.3rem;
    }
    
    .case-related-products {
        padding: 40px 0;
    }
    
    .case-related-products h2 {
        font-size: 1.8rem;
    }
    
    .case-thumbnail {
        width: 60px;
        height: 60px;
    }
    
    .case-spec-item {
        padding: 12px;
    }
}

/* Sliding Product Details 样式 */
.sliding-product-details {
    padding: 80px 0;
    background: white;
}

.sliding-product-content {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 60px;
    align-items: flex-start;
}

/* 产品图片区域 */
.sliding-product-images {
    position: sticky;
    top: 20px;
}

.sliding-main-image {
    margin-bottom: 20px;
    border-radius: 15px;
    overflow: hidden;
    box-shadow: 0 10px 30px rgba(0,0,0,0.1);
}

.sliding-main-image img {
    width: 100%;
    height: auto;
    display: block;
    transition: transform 0.3s ease;
}

.sliding-main-image:hover img {
    transform: scale(1.02);
}

.sliding-thumbnail-images {
    display: flex;
    gap: 15px;
}

.sliding-thumbnail-images img {
    width: 80px;
    height: 80px;
    border-radius: 10px;
    overflow: hidden;
    cursor: pointer;
    border: 3px solid transparent;
    transition: all 0.3s ease;
    opacity: 0.7;
}

.sliding-thumbnail-images img:hover {
    border-color: #007bff;
    opacity: 1;
    transform: scale(1.05);
}

.sliding-thumbnail-images img {
    width: 100%;
    height: 100%;
    object-fit: cover;
}

/* 产品信息区域 */
.sliding-product-info h2 {
    font-size: 2.5rem;
    color: #2c3e50;
    margin-bottom: 20px;
    font-weight: 600;
    line-height: 1.2;
}

.sliding-product-description {
    font-size: 1.1rem;
    color: #6c757d;
    margin-bottom: 30px;
    line-height: 1.8;
}

/* 产品特性 */
.sliding-product-features h3 {
    font-size: 1.5rem;
    color: #2c3e50;
    margin-bottom: 20px;
    font-weight: 600;
}

.sliding-product-features ul {
    list-style: none;
    margin-bottom: 30px;
}

.sliding-product-features li {
    padding: 10px 0;
    color: #495057;
    display: flex;
    align-items: center;
    gap: 15px;
    border-bottom: 1px solid #f1f3f4;
}

.sliding-product-features li:last-child {
    border-bottom: none;
}

.sliding-product-features i {
    color: #28a745;
    font-size: 16px;
    width: 20px;
    text-align: center;
}

/* 产品规格 */
.sliding-product-specs h3 {
    font-size: 1.5rem;
    color: #2c3e50;
    margin-bottom: 20px;
    font-weight: 600;
}

.sliding-specs-grid {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 20px;
    margin-bottom: 30px;
}

.sliding-spec-item {
    background: #f8f9fa;
    padding: 15px;
    border-radius: 8px;
    border: 1px solid #e9ecef;
}

.sliding-spec-label {
    display: block;
    font-size: 0.9rem;
    color: #6c757d;
    margin-bottom: 5px;
    font-weight: 500;
}

.sliding-spec-value {
    display: block;
    font-size: 1rem;
    color: #2c3e50;
    font-weight: 600;
}

/* 产品操作按钮 */
.sliding-product-actions {
    display: flex;
    gap: 15px;
    flex-wrap: wrap;
}

.sliding-product-actions .btn {
    flex: 1;
    min-width: 150px;
    justify-content: center;
}

/* 相关产品 */
.sliding-related-products {
    padding: 80px 0;
    background: #f8f9fa;
}

.sliding-related-products h2 {
    text-align: center;
    font-size: 2.5rem;
    color: #2c3e50;
    margin-bottom: 50px;
    font-weight: 600;
    position: relative;
}

.sliding-related-products h2::after {
    content: '';
    position: absolute;
    bottom: -15px;
    left: 50%;
    transform: translateX(-50%);
    width: 80px;
    height: 3px;
    background: linear-gradient(135deg, #667eea, #764ba2);
    border-radius: 2px;
}

.sliding-products-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
    gap: 30px;
}

.sliding-product-card {
    background: white;
    border-radius: 15px;
    overflow: hidden;
    box-shadow: 0 8px 25px rgba(0,0,0,0.08);
    transition: all 0.3s ease;
    border: 1px solid #f1f3f4;
}

.sliding-product-card:hover {
    transform: translateY(-10px);
    box-shadow: 0 20px 50px rgba(0,0,0,0.15);
}

.sliding-product-card img {
    width: 100%;
    height: 200px;
    object-fit: cover;
    transition: transform 0.3s ease;
}

.sliding-product-card:hover img {
    transform: scale(1.05);
}

.sliding-product-card h3 {
    font-size: 1.3rem;
    color: #2c3e50;
    margin: 20px 20px 10px;
    font-weight: 600;
}

.sliding-product-card p {
    color: #6c757d;
    margin: 0 20px 20px;
    line-height: 1.6;
}

.sliding-product-card .btn {
    margin: 0 20px 20px;
    width: calc(100% - 40px);
    justify-content: center;
}

/* 按钮样式 */
.btn {
    display: inline-flex;
    align-items: center;
    gap: 8px;
    padding: 12px 24px;
    text-decoration: none;
    border-radius: 6px;
    font-weight: 500;
    text-align: center;
    transition: all 0.3s ease;
    border: 2px solid transparent;
    cursor: pointer;
    font-size: 14px;
}

.btn-primary {
    background: #007bff;
    color: white;
    border-color: #007bff;
}

.btn-primary:hover {
    background: #0056b3;
    border-color: #0056b3;
    transform: translateY(-2px);
}

.btn-outline {
    background: transparent;
    color: #007bff;
    border-color: #007bff;
}

.btn-outline:hover {
    background: #007bff;
    color: white;
    transform: translateY(-2px);
}

/* 响应式设计 */
@media (max-width: 1024px) {
    .sliding-product-content {
        gap: 40px;
    }
    
    .sliding-specs-grid {
        grid-template-columns: 1fr;
    }
}

@media (max-width: 768px) {
    .sliding-product-details {
        padding: 60px 0;
    }
    
    .sliding-product-content {
        grid-template-columns: 1fr;
        gap: 40px;
    }
    
    .sliding-product-images {
        position: static;
    }
    
    .sliding-product-info h2 {
        font-size: 2rem;
    }
    
    .sliding-product-actions {
        flex-direction: column;
    }
    
    .sliding-product-actions .btn {
        width: 100%;
    }
    
    .sliding-related-products {
        padding: 60px 0;
    }
    
    .sliding-related-products h2 {
        font-size: 2rem;
        margin-bottom: 40px;
    }
    
    .sliding-products-grid {
        grid-template-columns: 1fr;
        gap: 20px;
    }
}

@media (max-width: 480px) {
    .sliding-product-details {
        padding: 40px 0;
    }
    
    .sliding-product-info h2 {
        font-size: 1.8rem;
    }
    
    .sliding-product-description {
        font-size: 1rem;
    }
    
    .sliding-product-features h3,
    .sliding-product-specs h3 {
        font-size: 1.3rem;
    }
    
    .sliding-related-products {
        padding: 40px 0;
    }
    
    .sliding-related-products h2 {
        font-size: 1.8rem;
    }
    
    .sliding-thumbnail-images img {
        width: 60px;
        height: 60px;
    }
    
    .sliding-spec-item {
        padding: 12px;
    }
}

/* Tilt Product Details 样式 */
.tilt-product-details {
    padding: 80px 0;
    background: white;
}

.tilt-product-content {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 60px;
    align-items: flex-start;
}

/* 产品图片区域 */
.tilt-product-images {
    position: sticky;
    top: 20px;
}

.tilt-main-image {
    margin-bottom: 20px;
    border-radius: 15px;
    overflow: hidden;
    box-shadow: 0 10px 30px rgba(0,0,0,0.1);
}

.tilt-main-image img {
    width: 100%;
    height: auto;
    display: block;
    transition: transform 0.3s ease;
}

.tilt-main-image:hover img {
    transform: scale(1.02);
}

.tilt-thumbnail-images {
    display: flex;
    gap: 15px;
}

.tilt-thumbnail {
    width: 80px;
    height: 80px;
    border-radius: 10px;
    overflow: hidden;
    cursor: pointer;
    border: 3px solid transparent;
    transition: all 0.3s ease;
    opacity: 0.7;
}

.tilt-thumbnail.active,
.tilt-thumbnail:hover {
    border-color: #007bff;
    opacity: 1;
    transform: scale(1.05);
}

.tilt-thumbnail img {
    width: 100%;
    height: 100%;
    object-fit: cover;
}

/* 产品信息区域 */
.tilt-product-info h2 {
    font-size: 2.5rem;
    color: #2c3e50;
    margin-bottom: 20px;
    font-weight: 600;
    line-height: 1.2;
}

.tilt-product-description {
    font-size: 1.1rem;
    color: #6c757d;
    margin-bottom: 30px;
    line-height: 1.8;
}

/* 产品特性 */
.tilt-product-features h3 {
    font-size: 1.5rem;
    color: #2c3e50;
    margin-bottom: 20px;
    font-weight: 600;
}

.tilt-product-features ul {
    list-style: none;
    margin-bottom: 30px;
}

.tilt-product-features li {
    padding: 10px 0;
    color: #495057;
    display: flex;
    align-items: center;
    gap: 15px;
    border-bottom: 1px solid #f1f3f4;
}

.tilt-product-features li:last-child {
    border-bottom: none;
}

.tilt-product-features i {
    color: #28a745;
    font-size: 16px;
    width: 20px;
    text-align: center;
}

/* 开启模式 */
.tilt-opening-modes h3 {
    font-size: 1.5rem;
    color: #2c3e50;
    margin-bottom: 20px;
    font-weight: 600;
}

.tilt-modes-grid {
    display: grid;
    grid-template-columns: 1fr;
    gap: 20px;
    margin-bottom: 30px;
}

.tilt-mode-item {
    background: #f8f9fa;
    padding: 25px;
    border-radius: 12px;
    border: 1px solid #e9ecef;
    text-align: center;
    transition: all 0.3s ease;
}

.tilt-mode-item:hover {
    transform: translateY(-5px);
    box-shadow: 0 10px 25px rgba(0,0,0,0.1);
    border-color: #007bff;
}

.tilt-mode-item i {
    font-size: 2rem;
    color: #007bff;
    margin-bottom: 15px;
    display: block;
}

.tilt-mode-item h4 {
    font-size: 1.2rem;
    color: #2c3e50;
    margin-bottom: 10px;
    font-weight: 600;
}

.tilt-mode-item p {
    color: #6c757d;
    line-height: 1.6;
    margin: 0;
}

/* 产品规格 */
.tilt-product-specs h3 {
    font-size: 1.5rem;
    color: #2c3e50;
    margin-bottom: 20px;
    font-weight: 600;
}

.tilt-specs-grid {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 20px;
    margin-bottom: 30px;
}

.tilt-spec-item {
    background: #f8f9fa;
    padding: 15px;
    border-radius: 8px;
    border: 1px solid #e9ecef;
}

.tilt-spec-label {
    display: block;
    font-size: 0.9rem;
    color: #6c757d;
    margin-bottom: 5px;
    font-weight: 500;
}

.tilt-spec-value {
    display: block;
    font-size: 1rem;
    color: #2c3e50;
    font-weight: 600;
}

/* 产品操作按钮 */
.tilt-product-actions {
    display: flex;
    gap: 15px;
    flex-wrap: wrap;
}

.tilt-product-actions .btn {
    flex: 1;
    min-width: 150px;
    justify-content: center;
}

/* 相关产品 */
.tilt-related-products {
    padding: 80px 0;
    background: #f8f9fa;
}

.tilt-related-products h2 {
    text-align: center;
    font-size: 2.5rem;
    color: #2c3e50;
    margin-bottom: 50px;
    font-weight: 600;
    position: relative;
}

.tilt-related-products h2::after {
    content: '';
    position: absolute;
    bottom: -15px;
    left: 50%;
    transform: translateX(-50%);
    width: 80px;
    height: 3px;
    background: linear-gradient(135deg, #667eea, #764ba2);
    border-radius: 2px;
}

.tilt-products-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
    gap: 30px;
}

.tilt-product-card {
    background: white;
    border-radius: 15px;
    overflow: hidden;
    box-shadow: 0 8px 25px rgba(0,0,0,0.08);
    transition: all 0.3s ease;
    border: 1px solid #f1f3f4;
}

.tilt-product-card:hover {
    transform: translateY(-10px);
    box-shadow: 0 20px 50px rgba(0,0,0,0.15);
}

.tilt-product-card img {
    width: 100%;
    height: 200px;
    object-fit: cover;
    transition: transform 0.3s ease;
}

.tilt-product-card:hover img {
    transform: scale(1.05);
}

.tilt-product-card h3 {
    font-size: 1.3rem;
    color: #2c3e50;
    margin: 20px 20px 10px;
    font-weight: 600;
}

.tilt-product-card p {
    color: #6c757d;
    margin: 0 20px 20px;
    line-height: 1.6;
}

.tilt-product-card .btn {
    margin: 0 20px 20px;
    width: calc(100% - 40px);
    justify-content: center;
}

/* 按钮样式 */
.btn {
    display: inline-flex;
    align-items: center;
    gap: 8px;
    padding: 12px 24px;
    text-decoration: none;
    border-radius: 6px;
    font-weight: 500;
    text-align: center;
    transition: all 0.3s ease;
    border: 2px solid transparent;
    cursor: pointer;
    font-size: 14px;
}

.btn-primary {
    background: #007bff;
    color: white;
    border-color: #007bff;
}

.btn-primary:hover {
    background: #0056b3;
    border-color: #0056b3;
    transform: translateY(-2px);
}

.btn-outline {
    background: transparent;
    color: #007bff;
    border-color: #007bff;
}

.btn-outline:hover {
    background: #007bff;
    color: white;
    transform: translateY(-2px);
}

/* 响应式设计 */
@media (max-width: 1024px) {
    .tilt-product-content {
        gap: 40px;
    }
    
    .tilt-specs-grid {
        grid-template-columns: 1fr;
    }
}

@media (max-width: 768px) {
    .tilt-product-details {
        padding: 60px 0;
    }
    
    .tilt-product-content {
        grid-template-columns: 1fr;
        gap: 40px;
    }
    
    .tilt-product-images {
        position: static;
    }
    
    .tilt-product-info h2 {
        font-size: 2rem;
    }
    
    .tilt-modes-grid {
        grid-template-columns: 1fr;
    }
    
    .tilt-product-actions {
        flex-direction: column;
    }
    
    .tilt-product-actions .btn {
        width: 100%;
    }
    
    .tilt-related-products {
        padding: 60px 0;
    }
    
    .tilt-related-products h2 {
        font-size: 2rem;
        margin-bottom: 40px;
    }
    
    .tilt-products-grid {
        grid-template-columns: 1fr;
        gap: 20px;
    }
}

@media (max-width: 480px) {
    .tilt-product-details {
        padding: 40px 0;
    }
    
    .tilt-product-info h2 {
        font-size: 1.8rem;
    }
    
    .tilt-product-description {
        font-size: 1rem;
    }
    
    .tilt-product-features h3,
    .tilt-product-specs h3,
    .tilt-opening-modes h3 {
        font-size: 1.3rem;
    }
    
    .tilt-related-products {
        padding: 40px 0;
    }
    
    .tilt-related-products h2 {
        font-size: 1.8rem;
    }
    
    .tilt-thumbnail {
        width: 60px;
        height: 60px;
    }
    
    .tilt-spec-item {
        padding: 12px;
    }
    
    .tilt-mode-item {
        padding: 20px;
    }
    
    .tilt-mode-item i {
        font-size: 1.5rem;
    }
}

/* Fixed Product Details 样式 */
.fixed-product-details {
    padding: 80px 0;
    background: white;
}

.fixed-product-content {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 60px;
    align-items: flex-start;
}

/* 产品图片区域 */
.fixed-product-images {
    position: sticky;
    top: 20px;
}

.fixed-main-image {
    margin-bottom: 20px;
    border-radius: 15px;
    overflow: hidden;
    box-shadow: 0 10px 30px rgba(0,0,0,0.1);
}

.fixed-main-image img {
    width: 100%;
    height: auto;
    display: block;
    transition: transform 0.3s ease;
}

.fixed-main-image:hover img {
    transform: scale(1.02);
}

.fixed-thumbnail-images {
    display: flex;
    gap: 15px;
}

.fixed-thumbnail {
    width: 80px;
    height: 80px;
    border-radius: 10px;
    overflow: hidden;
    cursor: pointer;
    border: 3px solid transparent;
    transition: all 0.3s ease;
    opacity: 0.7;
}

.fixed-thumbnail.active,
.fixed-thumbnail:hover {
    border-color: #007bff;
    opacity: 1;
    transform: scale(1.05);
}

.fixed-thumbnail img {
    width: 100%;
    height: 100%;
    object-fit: cover;
}

/* 产品信息区域 */
.fixed-product-info h2 {
    font-size: 2.5rem;
    color: #2c3e50;
    margin-bottom: 20px;
    font-weight: 600;
    line-height: 1.2;
}

.fixed-product-description {
    font-size: 1.1rem;
    color: #6c757d;
    margin-bottom: 30px;
    line-height: 1.8;
}

/* 应用场景 */
.fixed-applications h3 {
    font-size: 1.5rem;
    color: #2c3e50;
    margin-bottom: 20px;
    font-weight: 600;
}

.fixed-applications-grid {
    display: grid;
    grid-template-columns: 1fr;
    gap: 20px;
    margin-bottom: 30px;
}

.fixed-app-item {
    background: #f8f9fa;
    padding: 25px;
    border-radius: 12px;
    border: 1px solid #e9ecef;
    text-align: center;
    transition: all 0.3s ease;
}

.fixed-app-item:hover {
    transform: translateY(-5px);
    box-shadow: 0 10px 25px rgba(0,0,0,0.1);
    border-color: #007bff;
}

.fixed-app-item i {
    font-size: 2rem;
    color: #007bff;
    margin-bottom: 15px;
    display: block;
}

.fixed-app-item h4 {
    font-size: 1.2rem;
    color: #2c3e50;
    margin-bottom: 10px;
    font-weight: 600;
}

.fixed-app-item p {
    color: #6c757d;
    line-height: 1.6;
    margin: 0;
}

/* 产品特性 */
.fixed-product-features h3 {
    font-size: 1.5rem;
    color: #2c3e50;
    margin-bottom: 20px;
    font-weight: 600;
}

.fixed-product-features ul {
    list-style: none;
    margin-bottom: 30px;
}

.fixed-product-features li {
    padding: 10px 0;
    color: #495057;
    display: flex;
    align-items: center;
    gap: 15px;
    border-bottom: 1px solid #f1f3f4;
}

.fixed-product-features li:last-child {
    border-bottom: none;
}

.fixed-product-features i {
    color: #28a745;
    font-size: 16px;
    width: 20px;
    text-align: center;
}

/* 产品规格 */
.fixed-product-specs h3 {
    font-size: 1.5rem;
    color: #2c3e50;
    margin-bottom: 20px;
    font-weight: 600;
}

.fixed-specs-grid {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 20px;
    margin-bottom: 30px;
}

.fixed-spec-item {
    background: #f8f9fa;
    padding: 15px;
    border-radius: 8px;
    border: 1px solid #e9ecef;
}

.fixed-spec-label {
    display: block;
    font-size: 0.9rem;
    color: #6c757d;
    margin-bottom: 5px;
    font-weight: 500;
}

.fixed-spec-value {
    display: block;
    font-size: 1rem;
    color: #2c3e50;
    font-weight: 600;
}

/* 产品操作按钮 */
.fixed-product-actions {
    display: flex;
    gap: 15px;
    flex-wrap: wrap;
}

.fixed-product-actions .btn {
    flex: 1;
    min-width: 150px;
    justify-content: center;
}

/* 相关产品 */
.fixed-related-products {
    padding: 80px 0;
    background: #f8f9fa;
}

.fixed-related-products h2 {
    text-align: center;
    font-size: 2.5rem;
    color: #2c3e50;
    margin-bottom: 50px;
    font-weight: 600;
    position: relative;
}

.fixed-related-products h2::after {
    content: '';
    position: absolute;
    bottom: -15px;
    left: 50%;
    transform: translateX(-50%);
    width: 80px;
    height: 3px;
    background: linear-gradient(135deg, #667eea, #764ba2);
    border-radius: 2px;
}

.fixed-products-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
    gap: 30px;
}

.fixed-product-card {
    background: white;
    border-radius: 15px;
    overflow: hidden;
    box-shadow: 0 8px 25px rgba(0,0,0,0.08);
    transition: all 0.3s ease;
    border: 1px solid #f1f3f4;
}

.fixed-product-card:hover {
    transform: translateY(-10px);
    box-shadow: 0 20px 50px rgba(0,0,0,0.15);
}

.fixed-product-card img {
    width: 100%;
    height: 200px;
    object-fit: cover;
    transition: transform 0.3s ease;
}

.fixed-product-card:hover img {
    transform: scale(1.05);
}

.fixed-product-card h3 {
    font-size: 1.3rem;
    color: #2c3e50;
    margin: 20px 20px 10px;
    font-weight: 600;
}

.fixed-product-card p {
    color: #6c757d;
    margin: 0 20px 20px;
    line-height: 1.6;
}

.fixed-product-card .btn {
    margin: 0 20px 20px;
    width: calc(100% - 40px);
    justify-content: center;
}

/* 按钮样式 */
.btn {
    display: inline-flex;
    align-items: center;
    gap: 8px;
    padding: 12px 24px;
    text-decoration: none;
    border-radius: 6px;
    font-weight: 500;
    text-align: center;
    transition: all 0.3s ease;
    border: 2px solid transparent;
    cursor: pointer;
    font-size: 14px;
}

.btn-primary {
    background: #007bff;
    color: white;
    border-color: #007bff;
}

.btn-primary:hover {
    background: #0056b3;
    border-color: #0056b3;
    transform: translateY(-2px);
}

.btn-outline {
    background: transparent;
    color: #007bff;
    border-color: #007bff;
}

.btn-outline:hover {
    background: #007bff;
    color: white;
    transform: translateY(-2px);
}

/* 响应式设计 */
@media (max-width: 1024px) {
    .fixed-product-content {
        gap: 40px;
    }
    
    .fixed-specs-grid {
        grid-template-columns: 1fr;
    }
}

@media (max-width: 768px) {
    .fixed-product-details {
        padding: 60px 0;
    }
    
    .fixed-product-content {
        grid-template-columns: 1fr;
        gap: 40px;
    }
    
    .fixed-product-images {
        position: static;
    }
    
    .fixed-product-info h2 {
        font-size: 2rem;
    }
    
    .fixed-applications-grid {
        grid-template-columns: 1fr;
    }
    
    .fixed-product-actions {
        flex-direction: column;
    }
    
    .fixed-product-actions .btn {
        width: 100%;
    }
    
    .fixed-related-products {
        padding: 60px 0;
    }
    
    .fixed-related-products h2 {
        font-size: 2rem;
        margin-bottom: 40px;
    }
    
    .fixed-products-grid {
        grid-template-columns: 1fr;
        gap: 20px;
    }
}

@media (max-width: 480px) {
    .fixed-product-details {
        padding: 40px 0;
    }
    
    .fixed-product-info h2 {
        font-size: 1.8rem;
    }
    
    .fixed-product-description {
        font-size: 1rem;
    }
    
    .fixed-product-features h3,
    .fixed-product-specs h3,
    .fixed-applications h3 {
        font-size: 1.3rem;
    }
    
    .fixed-related-products {
        padding: 40px 0;
    }
    
    .fixed-related-products h2 {
        font-size: 1.8rem;
    }
    
    .fixed-thumbnail {
        width: 60px;
        height: 60px;
    }
    
    .fixed-spec-item {
        padding: 12px;
    }
    
    .fixed-app-item {
        padding: 20px;
    }
    
    .fixed-app-item i {
        font-size: 1.5rem;
    }
}


/* Service Process Section 样式 - 避免冲突版本 */
.service-process-section {
    padding: 100px 0;
    background: linear-gradient(135deg, #f8fafc 0%, #e2e8f0 100%);
    position: relative;
    overflow: hidden;
}

.service-process-section::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background: url('data:image/svg+xml,<svg xmlns="http://www.w3.org/2000/svg" viewBox="0 0 100 100"><defs><pattern id="grid" width="10" height="10" patternUnits="userSpaceOnUse"><path d="M 10 0 L 0 0 0 10" fill="none" stroke="%23e2e8f0" stroke-width="0.5"/></pattern></defs><rect width="100" height="100" fill="url(%23grid)"/></svg>');
    opacity: 0.3;
}

.service-process-section .container {
    position: relative;
    z-index: 2;
}

.service-process-section .section-title {
    text-align: center;
    font-size: 2.5rem;
    font-weight: 700;
    color: #1e293b;
    margin-bottom: 20px;
}

.service-process-section .section-subtitle {
    text-align: center;
    font-size: 1.1rem;
    color: #64748b;
    margin-bottom: 60px;
    max-width: 600px;
    margin-left: auto;
    margin-right: auto;
}

/* Process Steps Grid - 使用具体类名 */
.service-process-steps-grid {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: 40px;
    margin-bottom: 60px;
}

/* 每个步骤卡片 - 使用具体类名 */
.service-process-step-card {
    background: white;
    border-radius: 20px;
    padding: 40px 30px;
    text-align: center;
    box-shadow: 0 10px 30px rgba(0, 0, 0, 0.1);
    transition: all 0.3s ease;
    position: relative;
    overflow: hidden;
}

.service-process-step-card::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 4px;
    background: linear-gradient(90deg, #3b82f6, #8b5cf6);
    transform: scaleX(0);
    transition: transform 0.3s ease;
}

.service-process-step-card:hover::before {
    transform: scaleX(1);
}

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

/* 步骤编号 - 使用具体类名 */
.service-process-step-number {
    position: absolute;
    top: 20px;
    right: 20px;
    width: 40px;
    height: 40px;
    background: linear-gradient(135deg, #3b82f6, #8b5cf6);
    color: white;
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    font-weight: 700;
    font-size: 1.1rem;
    box-shadow: 0 5px 15px rgba(59, 130, 246, 0.3);
}

/* 步骤图标 - 使用具体类名 */
.service-process-step-icon {
    width: 80px;
    height: 80px;
    background: linear-gradient(135deg, rgba(59, 130, 246, 0.1), rgba(139, 92, 246, 0.1));
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    margin: 0 auto 25px;
    transition: all 0.3s ease;
}

.service-process-step-icon i {
    font-size: 2rem;
    color: #3b82f6;
    transition: all 0.3s ease;
}

.service-process-step-card:hover .service-process-step-icon {
    background: linear-gradient(135deg, rgba(59, 130, 246, 0.2), rgba(139, 92, 246, 0.2));
    transform: scale(1.1);
}

.service-process-step-card:hover .service-process-step-icon i {
    color: #1d4ed8;
    transform: scale(1.1);
}

/* 步骤内容 - 使用具体类名 */
.service-process-step-title {
    font-size: 1.4rem;
    font-weight: 600;
    color: #1e293b;
    margin-bottom: 15px;
    transition: color 0.3s ease;
}

.service-process-step-card:hover .service-process-step-title {
    color: #3b82f6;
}

.service-process-step-description {
    font-size: 1rem;
    color: #64748b;
    line-height: 1.6;
    margin-bottom: 20px;
}

/* 步骤详情 - 使用具体类名 */
.service-process-step-details {
    background: rgba(59, 130, 246, 0.05);
    border: 1px solid rgba(59, 130, 246, 0.1);
    border-radius: 12px;
    padding: 12px 16px;
    display: inline-block;
}

.service-process-step-details span {
    font-size: 0.9rem;
    color: #3b82f6;
    font-weight: 500;
}

/* 流程CTA - 使用具体类名 */
.service-process-cta {
    text-align: center;
    background: white;
    border-radius: 20px;
    padding: 40px;
    box-shadow: 0 10px 30px rgba(0, 0, 0, 0.1);
    max-width: 600px;
    margin: 0 auto;
}

.service-process-cta-text {
    font-size: 1.2rem;
    color: #1e293b;
    margin-bottom: 25px;
    font-weight: 500;
}

.service-process-cta .btn {
    display: inline-flex;
    align-items: center;
    gap: 10px;
    padding: 16px 32px;
    background: linear-gradient(135deg, #3b82f6, #1d4ed8);
    color: white;
    text-decoration: none;
    border-radius: 12px;
    font-weight: 600;
    font-size: 1rem;
    transition: all 0.3s ease;
    border: none;
    cursor: pointer;
}

.service-process-cta .btn:hover {
    background: linear-gradient(135deg, #2563eb, #1e40af);
    transform: translateY(-3px);
    box-shadow: 0 15px 35px rgba(59, 130, 246, 0.4);
}

/* 响应式设计 */
@media (max-width: 1200px) {
    .service-process-steps-grid {
        gap: 30px;
    }
    
    .service-process-step-card {
        padding: 35px 25px;
    }
}

@media (max-width: 1024px) {
    .service-process-section {
        padding: 80px 0;
    }
    
    .service-process-section .section-title {
        font-size: 2.2rem;
    }
    
    .service-process-steps-grid {
        grid-template-columns: repeat(2, 1fr);
        gap: 25px;
    }
}

@media (max-width: 768px) {
    .service-process-section {
        padding: 60px 0;
    }
    
    .service-process-section .section-title {
        font-size: 2rem;
    }
    
    .service-process-section .section-subtitle {
        font-size: 1rem;
        margin-bottom: 40px;
    }
    
    .service-process-steps-grid {
        grid-template-columns: 1fr;
        gap: 20px;
    }
    
    .service-process-step-card {
        padding: 30px 20px;
    }
    
    .service-process-step-icon {
        width: 70px;
        height: 70px;
    }
    
    .service-process-step-icon i {
        font-size: 1.8rem;
    }
    
    .service-process-cta {
        padding: 30px 20px;
        margin: 0 20px;
    }
    
    .service-process-cta-text {
        font-size: 1.1rem;
    }
}

@media (max-width: 480px) {
    .service-process-section .section-title {
        font-size: 1.8rem;
    }
    
    .service-process-step-card {
        padding: 25px 15px;
    }
    
    .service-process-step-number {
        width: 35px;
        height: 35px;
        font-size: 1rem;
        top: 15px;
        right: 15px;
    }
    
    .service-process-step-icon {
        width: 60px;
        height: 60px;
        margin-bottom: 20px;
    }
    
    .service-process-step-icon i {
        font-size: 1.5rem;
    }
    
    .service-process-step-title {
        font-size: 1.2rem;
    }
    
    .service-process-step-description {
        font-size: 0.9rem;
    }
    
    .service-process-step-details {
        padding: 10px 12px;
    }
    
    .service-process-step-details span {
        font-size: 0.8rem;
    }
    
    .service-process-cta {
        padding: 25px 15px;
    }
    
    .service-process-cta-text {
        font-size: 1rem;
    }
    
    .service-process-cta .btn {
        padding: 14px 24px;
        font-size: 0.9rem;
    }
}

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

.service-process-step-card {
    animation: serviceStepFadeIn 0.6s ease forwards;
}

.service-process-step-card:nth-child(1) { animation-delay: 0.1s; }
.service-process-step-card:nth-child(2) { animation-delay: 0.2s; }
.service-process-step-card:nth-child(3) { animation-delay: 0.3s; }
.service-process-step-card:nth-child(4) { animation-delay: 0.4s; }
.service-process-step-card:nth-child(5) { animation-delay: 0.5s; }
.service-process-step-card:nth-child(6) { animation-delay: 0.6s; }

/* Technical Advantages Section 样式 */
.technical-advantages-section {
    padding: 100px 0;
    background: linear-gradient(135deg, #ffffff 0%, #f1f5f9 100%);
    position: relative;
    overflow: hidden;
}

.technical-advantages-section::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background: url('data:image/svg+xml,<svg xmlns="http://www.w3.org/2000/svg" viewBox="0 0 100 100"><defs><pattern id="tech-pattern" width="20" height="20" patternUnits="userSpaceOnUse"><circle cx="10" cy="10" r="1" fill="%23e2e8f0" opacity="0.3"/></pattern></defs><rect width="100" height="100" fill="url(%23tech-pattern)"/></svg>');
    opacity: 0.5;
}

.technical-advantages-section .container {
    position: relative;
    z-index: 2;
}

.technical-advantages-section .section-title {
    text-align: center;
    font-size: 2.5rem;
    font-weight: 700;
    color: #1e293b;
    margin-bottom: 20px;
}

.technical-advantages-section .section-subtitle {
    text-align: center;
    font-size: 1.1rem;
    color: #64748b;
    margin-bottom: 60px;
    max-width: 700px;
    margin-left: auto;
    margin-right: auto;
    line-height: 1.6;
}

/* Technical Advantages Grid - 一行4个 */
.technical-advantages-grid {
    display: grid;
    grid-template-columns: repeat(4, 1fr);
    gap: 30px;
    margin-top: 60px;
}

/* Technical Feature Card */
.technical-feature-card {
    background: white;
    border-radius: 20px;
    padding: 35px 25px;
    text-align: center;
    box-shadow: 0 10px 30px rgba(0, 0, 0, 0.08);
    transition: all 0.4s cubic-bezier(0.4, 0, 0.2, 1);
    position: relative;
    overflow: hidden;
    border: 1px solid rgba(226, 232, 240, 0.8);
}

.technical-feature-card::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 4px;
    background: linear-gradient(90deg, #3b82f6, #8b5cf6, #06b6d4);
    transform: scaleX(0);
    transition: transform 0.4s ease;
}

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

.technical-feature-card:hover {
    transform: translateY(-10px);
    box-shadow: 0 25px 50px rgba(0, 0, 0, 0.15);
    border-color: rgba(59, 130, 246, 0.2);
}

/* Technical Feature Icon */
.technical-feature-icon {
    width: 80px;
    height: 80px;
    background: linear-gradient(135deg, rgba(59, 130, 246, 0.1), rgba(139, 92, 246, 0.1));
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    margin: 0 auto 20px;
    transition: all 0.4s ease;
    position: relative;
}

.technical-feature-icon::after {
    content: '';
    position: absolute;
    top: -5px;
    left: -5px;
    right: -5px;
    bottom: -5px;
    background: linear-gradient(135deg, #3b82f6, #8b5cf6);
    border-radius: 50%;
    opacity: 0;
    transition: opacity 0.4s ease;
    z-index: -1;
}

.technical-feature-card:hover .technical-feature-icon::after {
    opacity: 0.1;
}

.technical-feature-icon i {
    font-size: 2rem;
    color: #3b82f6;
    transition: all 0.4s ease;
}

.technical-feature-card:hover .technical-feature-icon {
    background: linear-gradient(135deg, rgba(59, 130, 246, 0.15), rgba(139, 92, 246, 0.15));
    transform: scale(1.1);
}

.technical-feature-card:hover .technical-feature-icon i {
    color: #1d4ed8;
    transform: scale(1.1);
}

/* Technical Feature Content */
.technical-feature-card h3 {
    font-size: 1.3rem;
    font-weight: 600;
    color: #1e293b;
    margin-bottom: 12px;
    transition: color 0.3s ease;
}

.technical-feature-card:hover h3 {
    color: #3b82f6;
}

.technical-feature-card p {
    font-size: 0.95rem;
    color: #64748b;
    line-height: 1.5;
    margin-bottom: 20px;
    min-height: 42px;
}

/* Technical Feature Specs */
.technical-feature-specs {
    display: flex;
    flex-direction: column;
    gap: 6px;
    align-items: center;
}

.spec-item {
    background: linear-gradient(135deg, rgba(59, 130, 246, 0.08), rgba(139, 92, 246, 0.08));
    border: 1px solid rgba(59, 130, 246, 0.15);
    border-radius: 6px;
    padding: 6px 12px;
    font-size: 0.8rem;
    color: #3b82f6;
    font-weight: 500;
    transition: all 0.3s ease;
    white-space: nowrap;
}

.technical-feature-card:hover .spec-item {
    background: linear-gradient(135deg, rgba(59, 130, 246, 0.12), rgba(139, 92, 246, 0.12));
    border-color: rgba(59, 130, 246, 0.25);
    color: #1d4ed8;
    transform: translateY(-2px);
}

/* 响应式设计 */
@media (max-width: 1200px) {
    .technical-advantages-grid {
        grid-template-columns: repeat(2, 1fr);
        gap: 30px;
    }
    
    .technical-feature-card {
        padding: 40px 30px;
    }
    
    .technical-feature-icon {
        width: 90px;
        height: 90px;
        margin-bottom: 25px;
    }
    
    .technical-feature-icon i {
        font-size: 2.2rem;
    }
    
    .technical-feature-card h3 {
        font-size: 1.4rem;
        margin-bottom: 15px;
    }
    
    .technical-feature-card p {
        font-size: 1rem;
        min-height: 48px;
        margin-bottom: 25px;
    }
    
    .spec-item {
        padding: 8px 16px;
        font-size: 0.85rem;
    }
}

@media (max-width: 768px) {
    .technical-advantages-section {
        padding: 60px 0;
    }
    
    .technical-advantages-section .section-title {
        font-size: 2rem;
    }
    
    .technical-advantages-section .section-subtitle {
        font-size: 1rem;
        margin-bottom: 40px;
    }
    
    .technical-advantages-grid {
        grid-template-columns: 1fr;
        gap: 20px;
    }
    
    .technical-feature-card {
        padding: 30px 20px;
    }
    
    .technical-feature-icon {
        width: 80px;
        height: 80px;
        margin-bottom: 20px;
    }
    
    .technical-feature-icon i {
        font-size: 2rem;
    }
}

@media (max-width: 480px) {
    .technical-advantages-section .section-title {
        font-size: 1.8rem;
    }
    
    .technical-feature-card {
        padding: 25px 15px;
    }
    
    .technical-feature-icon {
        width: 70px;
        height: 70px;
        margin-bottom: 20px;
    }
    
    .technical-feature-icon i {
        font-size: 1.8rem;
    }
    
    .technical-feature-card h3 {
        font-size: 1.2rem;
    }
    
    .technical-feature-card p {
        font-size: 0.9rem;
        min-height: 44px;
    }
    
    .spec-item {
        padding: 6px 12px;
        font-size: 0.8rem;
    }
}

/* 动画效果 */
@keyframes technicalFeatureFadeIn {
    from {
        opacity: 0;
        transform: translateY(40px);
    }
    to {
        opacity: 1;
        transform: translateY(0);
    }
}

.technical-feature-card {
    animation: technicalFeatureFadeIn 0.8s ease forwards;
}

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

/* 悬停时的连接线效果 */
.technical-advantages-grid:hover .technical-feature-card:not(:hover) {
    opacity: 0.7;
    transform: scale(0.98);
}

/* 特殊效果：图标背景动画 */
.technical-feature-card:hover .technical-feature-icon {
    animation: iconPulse 2s infinite;
}

@keyframes iconPulse {
    0%, 100% { transform: scale(1.1); }
    50% { transform: scale(1.15); }
}

/* 渐变边框效果 */
.technical-feature-card {
    position: relative;
}

.technical-feature-card::after {
    content: '';
    position: absolute;
    top: -2px;
    left: -2px;
    right: -2px;
    bottom: -2px;
    background: linear-gradient(135deg, #3b82f6, #8b5cf6, #06b6d4);
    border-radius: 22px;
    opacity: 0;
    transition: opacity 0.4s ease;
    z-index: -1;
}

.technical-feature-card:hover::after {
    opacity: 0.3;
}

/* 工厂展示区域样式 */
.factory-showcase-section {
    padding: 80px 0;
    background: linear-gradient(135deg, #f8f9fa 0%, #e9ecef 100%);
}

.factory-showcase-section .section-title {
    text-align: center;
    font-size: 2.5rem;
    font-weight: 700;
    color: #2c3e50;
    margin-bottom: 20px;
}

.factory-showcase-section .section-subtitle {
    text-align: center;
    font-size: 1.1rem;
    color: #6c757d;
    margin-bottom: 60px;
    max-width: 600px;
    margin-left: auto;
    margin-right: auto;
}

/* 工厂展示网格 */
.factory-showcase-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(350px, 1fr));
    gap: 30px;
    margin-bottom: 60px;
}

/* 工厂展示卡片 */
.factory-showcase-card {
    background: #fff;
    border-radius: 16px;
    overflow: hidden;
    box-shadow: 0 8px 30px rgba(0, 0, 0, 0.12);
    transition: all 0.3s ease;
    border: 1px solid #e9ecef;
}

.factory-showcase-card:hover {
    transform: translateY(-8px);
    box-shadow: 0 20px 40px rgba(0, 0, 0, 0.15);
}

/* 工厂图片容器 */
.factory-image-container {
    position: relative;
    height: 250px;
    overflow: hidden;
}

.factory-image-container img {
    width: 100%;
    height: 100%;
    object-fit: cover;
    transition: transform 0.3s ease;
}

.factory-showcase-card:hover .factory-image-container img {
    transform: scale(1.05);
}

/* 图片遮罩层 */
.factory-image-overlay {
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    background: rgba(0, 0, 0, 0.4);
    opacity: 0;
    transition: opacity 0.3s ease;
    display: flex;
    align-items: center;
    justify-content: center;
}

.factory-showcase-card:hover .factory-image-overlay {
    opacity: 1;
}

.overlay-content {
    color: #fff;
    font-size: 2rem;
}

.overlay-content i {
    background: rgba(255, 255, 255, 0.2);
    padding: 15px;
    border-radius: 50%;
    backdrop-filter: blur(10px);
}

/* 工厂卡片内容 */
.factory-card-content {
    padding: 25px;
}

.factory-card-content h3 {
    font-size: 1.3rem;
    font-weight: 600;
    color: #2c3e50;
    margin-bottom: 12px;
}

.factory-card-content p {
    color: #6c757d;
    line-height: 1.6;
    margin: 0;
}

/* 工厂统计数据 */
.factory-stats {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(200px, 1fr));
    gap: 30px;
    margin-bottom: 50px;
    padding: 40px;
    background: #fff;
    border-radius: 16px;
    box-shadow: 0 4px 20px rgba(0, 0, 0, 0.08);
}

.stat-item {
    text-align: center;
    padding: 20px;
}

.stat-number {
    font-size: 2.5rem;
    font-weight: 700;
    color: #007bff;
    margin-bottom: 8px;
    display: block;
}

.stat-label {
    font-size: 0.95rem;
    color: #6c757d;
    font-weight: 500;
}

/* 工厂CTA区域 */
.factory-cta {
    text-align: center;
    padding: 40px;
    background: #fff;
    border-radius: 16px;
    box-shadow: 0 4px 20px rgba(0, 0, 0, 0.08);
}

.factory-cta h3 {
    font-size: 1.8rem;
    font-weight: 600;
    color: #2c3e50;
    margin-bottom: 15px;
}

.factory-cta p {
    color: #6c757d;
    margin-bottom: 30px;
    font-size: 1.1rem;
}

.cta-buttons {
    display: flex;
    gap: 20px;
    justify-content: center;
    flex-wrap: wrap;
}

.cta-buttons .btn {
    padding: 12px 30px;
    font-size: 1rem;
    font-weight: 500;
    border-radius: 8px;
    text-decoration: none;
    transition: all 0.3s ease;
    display: inline-flex;
    align-items: center;
    gap: 8px;
}

.cta-buttons .btn-primary {
    background: #007bff;
    color: #fff;
    border: 2px solid #007bff;
}

.cta-buttons .btn-primary:hover {
    background: #0056b3;
    border-color: #0056b3;
    transform: translateY(-2px);
}

.cta-buttons .btn-outline {
    background: transparent;
    color: #007bff;
    border: 2px solid #007bff;
}

.cta-buttons .btn-outline:hover {
    background: #007bff;
    color: #fff;
    transform: translateY(-2px);
}

/* 响应式设计 */
@media (max-width: 768px) {
    .factory-showcase-section {
        padding: 60px 0;
    }
    
    .factory-showcase-section .section-title {
        font-size: 2rem;
    }
    
    .factory-showcase-grid {
        grid-template-columns: 1fr;
        gap: 20px;
    }
    
    .factory-stats {
        grid-template-columns: repeat(2, 1fr);
        gap: 20px;
        padding: 30px 20px;
    }
    
    .stat-number {
        font-size: 2rem;
    }
    
    .cta-buttons {
        flex-direction: column;
        align-items: center;
    }
    
    .cta-buttons .btn {
        width: 100%;
        max-width: 300px;
        justify-content: center;
    }
}

@media (max-width: 480px) {
    .factory-stats {
        grid-template-columns: 1fr;
    }
    
    .factory-showcase-section .section-title {
        font-size: 1.8rem;
    }
    
    .factory-showcase-section .section-subtitle {
        font-size: 1rem;
    }
}

/* 动画效果 */
.factory-showcase-card {
    animation: fadeInUp 0.6s ease forwards;
    opacity: 0;
    transform: translateY(30px);
}

.factory-showcase-card:nth-child(1) { animation-delay: 0.1s; }
.factory-showcase-card:nth-child(2) { animation-delay: 0.2s; }
.factory-showcase-card:nth-child(3) { animation-delay: 0.3s; }
.factory-showcase-card:nth-child(4) { animation-delay: 0.4s; }
.factory-showcase-card:nth-child(5) { animation-delay: 0.5s; }
.factory-showcase-card:nth-child(6) { animation-delay: 0.6s; }

@keyframes fadeInUp {
    to {
        opacity: 1;
        transform: translateY(0);
    }
}

/* 统计数字动画 */
.stat-number {
    animation: countUp 2s ease-out forwards;
}

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

/* 悬停效果增强 */
.factory-showcase-card:hover {
    border-color: #007bff;
}

.factory-image-container::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    background: linear-gradient(45deg, rgba(0, 123, 255, 0.1), rgba(0, 123, 255, 0.05));
    opacity: 0;
    transition: opacity 0.3s ease;
    z-index: 1;
}

.factory-showcase-card:hover .factory-image-container::before {
    opacity: 1;
}

/* 加载状态 */
.factory-showcase-card.loading {
    background: linear-gradient(90deg, #f0f0f0 25%, #e0e0e0 50%, #f0f0f0 75%);
    background-size: 200% 100%;
    animation: loading 1.5s infinite;
}

@keyframes loading {
    0% {
        background-position: 200% 0;
    }
    100% {
        background-position: -200% 0;
    }
}

/* WhatsApp 浮动按钮 */
.whatsapp-float {
    position: fixed;
    bottom: 30px;
    right: 30px;
    z-index: 1000;
}

.whatsapp-btn {
    display: flex;
    align-items: center;
    background: #25d366;
    color: white;
    padding: 15px 20px;
    border-radius: 50px;
    text-decoration: none;
    box-shadow: 0 4px 20px rgba(37, 211, 102, 0.3);
    transition: all 0.3s ease;
    font-weight: 500;
}

.whatsapp-btn:hover {
    background: #128c7e;
    transform: translateY(-2px);
    box-shadow: 0 6px 25px rgba(37, 211, 102, 0.4);
    color: white;
}

.whatsapp-btn i {
    font-size: 24px;
    margin-right: 10px;
}

.whatsapp-text {
    font-size: 14px;
    opacity: 0;
    transform: translateX(10px);
    transition: all 0.3s ease;
    white-space: nowrap;
}

.back-to-top {
    position: fixed;
    bottom: 90px;
    right: 30px;
    width: 50px;
    height: 50px;
    background: #007bff;
    color: white;
    border: none;
    border-radius: 50%;
    cursor: pointer;
    opacity: 0;
    visibility: hidden;
    transform: translateY(20px);
    transition: all 0.3s ease;
    z-index: 999;
    box-shadow: 0 4px 20px rgba(0, 123, 255, 0.3);
}

/* 显示状态 - 这是关键！ */
.back-to-top.show {
    opacity: 1;
    visibility: visible;
    transform: translateY(0);
}

/* 悬停效果 */
.back-to-top:hover {
    background: #0056b3;
    transform: translateY(-2px);
    box-shadow: 0 6px 25px rgba(0, 123, 255, 0.4);
}

/* 图标样式 */
.back-to-top i {
    font-size: 18px;
    line-height: 50px;
    text-align: center;
    display: block;
}

/* 响应式设计 */
@media (max-width: 768px) {
    .whatsapp-float {
        bottom: 20px;
        right: 20px;
    }
    
    .whatsapp-btn {
        padding: 12px 16px;
    }
    
    .whatsapp-text {
        display: none;
    }
    
    .whatsapp-btn i {
        margin-right: 0;
    }
    
    .back-to-top {
        bottom: 20px;
        right: 20px;
        width: 45px;
        height: 45px;
    }
}

@media (max-width: 480px) {
    .whatsapp-float {
        bottom: 60px;
        right: 15px;
    }
    
    .back-to-top {
        bottom: 20px;
        right: 20px;
        width: 40px;
        height: 40px;
    }
}

/* 动画效果 */
@keyframes whatsappPulse {
    0% {
        box-shadow: 0 4px 20px rgba(37, 211, 102, 0.3);
    }
    50% {
        box-shadow: 0 4px 20px rgba(37, 211, 102, 0.6);
    }
    100% {
        box-shadow: 0 4px 20px rgba(37, 211, 102, 0.3);
    }
}

.whatsapp-btn {
    animation: whatsappPulse 2s infinite;
}

.whatsapp-btn:hover {
    animation: none;
}

/* 深色模式支持 */
@media (prefers-color-scheme: dark) {
    .back-to-top {
        background: #6c757d;
    }
    
    .back-to-top:hover {
        background: #495057;
    }
}

/* VR Section 样式 */
.vr-section {
    padding: 80px 0;
    background-color:#f5f7fa;
}

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

.section-title {
    font-size: 2.5rem;
    font-weight: 600;
    color: #2c3e50;
    margin-bottom: 20px;
}

.section-subtitle {
    font-size: 1.1rem;
    color: #6c757d;
    max-width: 600px;
    margin: 0 auto;
    line-height: 1.6;
}

.vr-content {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 80px;
    align-items: center;
}

.vr-benefits {
    display: flex;
    flex-direction: column;
    gap: 30px;
}

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

.benefit-icon {
    width: 60px;
    height: 60px;
    background: linear-gradient(135deg, #007bff, #0056b3);
    border-radius: 15px;
    display: flex;
    align-items: center;
    justify-content: center;
    flex-shrink: 0;
}

.benefit-icon i {
    font-size: 1.5rem;
    color: white;
}

.benefit-text h4 {
    font-size: 1.2rem;
    font-weight: 600;
    color: #2c3e50;
    margin-bottom: 8px;
}

.benefit-text p {
    color: #6c757d;
    line-height: 1.6;
    margin: 0;
}

.vr-action {
    text-align: center;
}

.vr-preview {
    position: relative;
    margin-bottom: 30px;
    border-radius: 20px;
    overflow: hidden;
    box-shadow: 0 15px 35px rgba(0,0,0,0.1);
}

.vr-preview img {
    width: 100%;
    height: auto;
    transition: transform 0.3s ease;
}

.vr-preview:hover img {
    transform: scale(1.02);
}

.vr-badge {
    position: absolute;
    top: 20px;
    right: 20px;
    background: rgba(0,0,0,0.8);
    color: white;
    padding: 8px 15px;
    border-radius: 25px;
    display: flex;
    align-items: center;
    gap: 8px;
    font-size: 0.9rem;
    font-weight: 600;
}

.vr-cta h3 {
    font-size: 1.5rem;
    font-weight: 600;
    color: #2c3e50;
    margin-bottom: 15px;
}

.vr-cta p {
    color: #6c757d;
    margin-bottom: 25px;
    line-height: 1.6;
}

.btn-lg {
    padding: 15px 35px;
    font-size: 1.1rem;
    border-radius: 8px;
    display: inline-flex;
    align-items: center;
    gap: 10px;
    transition: all 0.3s ease;
}

.btn-lg:hover {
    transform: translateY(-2px);
    box-shadow: 0 8px 25px rgba(0,123,255,0.3);
}

.vr-devices {
    margin-top: 20px;
    display: flex;
    justify-content: center;
    gap: 15px;
}

.device-tag {
    background: #e9ecef;
    color: #495057;
    padding: 8px 15px;
    border-radius: 20px;
    font-size: 0.9rem;
    display: flex;
    align-items: center;
    gap: 6px;
}

.device-tag i {
    color: #6c757d;
}

/* 响应式设计 */
@media (max-width: 992px) {
    .vr-content {
        grid-template-columns: 1fr;
        gap: 50px;
    }
    
    .vr-benefits {
        order: 2;
    }
    
    .vr-action {
        order: 1;
    }
}

@media (max-width: 768px) {
    .section-title {
        font-size: 2rem;
    }
    
    .vr-benefits {
        gap: 20px;
    }
    
    .benefit-item {
        gap: 15px;
    }
    
    .benefit-icon {
        width: 50px;
        height: 50px;
    }
    
    .vr-devices {
        flex-direction: column;
        align-items: center;
    }
}

/* 移动端专门样式 */
@media (max-width: 768px) {
    /* 隐藏所有下拉菜单 */
    .dropdown-menu {
        display: none !important;
        position: static;
        background: transparent;
        box-shadow: none;
        border: none;
        margin-left: 20px;
    }
    
    /* 只有active状态才显示 */
    .dropdown.active .dropdown-menu {
        display: block !important;
    }
    
    /* 移动端菜单项样式 */
    .nav-menu .nav-item {
        margin: 15px 0;
        border-bottom: 1px solid rgba(255, 255, 255, 0.1);
    }
    
    .nav-menu .nav-link {
        color: white;
        font-size: 18px;
        padding: 15px 0;
        display: block;
    }
}


@media (max-width: 768px) {
    /* 移动端导航 - 左侧空位，右侧菜单 */
    .nav-menu {
        display: none;
        position: fixed;
        top: 60px;
        left: 100%; /* 从右侧开始，隐藏状态 */
        width: 85%; /* 占据85%的屏幕宽度 */
        height: 100vh;
        background: rgba(30, 58, 138, 0.98);
        backdrop-filter: blur(10px);
        flex-direction: column;
        justify-content: flex-start;
        align-items: flex-start;
        padding: 80px 30px 30px 30px;
        z-index: 999;
        transition: left 0.3s ease; /* 改为left的动画 */
        overflow-y: auto;
    }
    
    /* 激活状态 - 从右侧滑入 */
    .nav-menu.active {
        display: flex;
        left: 15%; /* 滑入到右侧，左边留出15%空位 */
    }
    
    /* 移动端菜单项样式 */
    .nav-menu .nav-item {
        margin: 15px 0;
        border-bottom: 1px solid rgba(255, 255, 255, 0.1);
        width: 100%; /* 占满容器宽度 */
    }
    
    .nav-menu .nav-link {
        color: white;
        font-size: 18px;
        padding: 15px 0;
        display: block;
        width: 100%;
    }
    
    /* 移动端下拉菜单样式 */
    .dropdown-menu {
        display: none !important;
        position: static;
        background: transparent;
        box-shadow: none;
        border: none;
        margin-left: 20px;
        margin-top: 10px;
        width: calc(100% - 20px); /* 减去左边距 */
    }
    
    .dropdown.active .dropdown-menu {
        display: block !important;
    }
    
    /* 下拉菜单分区样式 */
    .dropdown-section {
        margin: 15px 0;
    }
    
    .dropdown-section h3 {
        color: #4a90e2;
        font-size: 16px;
        margin: 15px 0 10px 0;
        font-weight: 600;
    }
    
    .dropdown-section ul {
        list-style: none;
        padding-left: 0;
        margin-bottom: 15px;
    }
    
    .dropdown-section li {
        margin: 8px 0;
    }
    
    .dropdown-section a {
        color: rgba(255, 255, 255, 0.8);
        text-decoration: none;
        font-size: 14px;
        padding: 8px 0;
        display: block;
        transition: color 0.3s ease;
    }
    
    .dropdown-section a:hover {
        color: white;
    }
}