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

:root {
    --primary-red: #8B0000;
    --dark-red: #5C0000;
    --light-red: #FFF5F5;
    --text-dark: #333333;
    --text-light: #666666;
    --white: #ffffff;
    --red: #cc0000;
    --black: #000000;
    --gray-bg: #f5f5f5;
    --border-color: #e0e0e0;
    --font-serif: 'Georgia', 'Times New Roman', 'Times', serif;
    --font-sans: -apple-system, BlinkMacSystemFont, 'Segoe UI', 'Roboto', 'Oxygen', 'Ubuntu', 'Cantarell', 'Fira Sans', 'Droid Sans', 'Helvetica Neue', sans-serif;
}

body {
    font-family: var(--font-sans);
    line-height: 1.6;
    color: var(--text-dark);
    overflow-x: hidden;
}

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

/* 确保header-top内的container左padding为0，logo完全左对齐，右padding与navbar一致 */
.header-top .container {
    padding-left: 0 !important;
    padding-right: 20px !important;
    max-width: 1200px !important;
    margin: 0 auto !important;
    width: 100% !important;
    box-sizing: border-box !important;
}

/* 确保navbar的container与header-top的container右对齐完全一致 */
.navbar .container {
    padding-right: 20px !important;
    padding-left: 20px !important;
    max-width: 1200px !important;
    margin: 0 auto !important;
    width: 100% !important;
    box-sizing: border-box !important;
}

/* 确保header-contact的右边缘与nav-icons的右边缘对齐 */
.header-top-content .header-contact {
    margin-right: 0 !important;
    padding-right: 0 !important;
}

/* Header Styles */
.header {
    background: #ffffff;
    box-shadow: 0 2px 10px rgba(0, 0, 0, 0.1);
    position: sticky;
    top: 0;
    z-index: 1000;
    margin: 0;
    padding: 0;
}

.header > * {
    margin: 0;
    display: block;
}

/* 确保header-top和navbar之间没有任何间距 */
.header-top + .navbar {
    margin-top: 0 !important;
    padding-top: 15px;
}

.header-top {
    background: #ffffff;
    padding: 10px 0;
    border-bottom: none;
    min-height: 60px;
    line-height: 1;
    margin: 0;
    display: flex;
    align-items: center;
}

.header-top-content {
    display: grid !important;
    grid-template-columns: min-content 1fr min-content !important;
    align-items: center !important;
    gap: 20px !important;
    width: 100%;
    min-height: 40px;
    padding-right: 0 !important;
    padding-left: 0 !important;
    margin-left: 0 !important;
}

.header-top-content .header-contact {
    grid-column: 3 !important;
    justify-self: end !important;
    margin-left: auto !important;
    margin-right: 0 !important;
    padding-right: 0 !important;
    justify-content: flex-end !important;
    text-align: right !important;
    align-items: center !important;
    display: flex !important;
}

.logo {
    display: flex !important;
    align-items: center !important;
    justify-content: flex-start !important;
    margin-right: 0 !important;
    margin-left: 0 !important;
    flex-shrink: 0; /* 防止logo被压缩 */
    height: 40px;
    line-height: 1;
}

/* 确保header-top-content内的logo完全左对齐 - 使用Grid */
.header-top-content .logo {
    grid-column: 1 !important;
    justify-self: start !important;
    margin-left: 0 !important;
    padding-left: 0 !important;
    justify-content: flex-start !important;
    display: flex !important;
    align-items: center !important;
}

.logo-img {
    width: 180px;
    height: 40px;
    object-fit: contain;
    display: block;
    vertical-align: middle;
    margin: 0;
    padding: 0;
}

.logo-text {
    font-family: var(--font-serif);
    font-size: 24px;
    font-weight: bold;
    color: var(--red);
    line-height: 1.2;
}

.logo-subtitle {
    font-size: 12px;
    color: var(--black);
    letter-spacing: 1px;
}

.header-contact {
    display: flex !important;
    gap: 30px;
    align-items: center !important;
    flex-wrap: nowrap !important;
    flex-direction: row !important;
    justify-content: flex-end !important;
    margin-left: auto !important;
    margin-right: 0 !important;
    text-align: right !important;
    align-content: center;
    width: auto;
    flex-shrink: 0;
    padding-right: 0;
}

.contact-item {
    display: flex !important;
    align-items: center !important;
    justify-content: flex-end !important;
    gap: 8px;
    font-size: 14px;
    color: var(--text-light);
    text-align: right !important;
    white-space: nowrap !important;
    flex-direction: row !important;
    direction: ltr;
    flex-shrink: 0 !important;
}

.contact-item i {
    order: 0 !important;
    flex-shrink: 0;
    color: var(--primary-red);
    display: inline-block;
}

.contact-item span {
    order: 1 !important;
    text-align: right !important;
    display: inline-block;
    direction: ltr;
}

/* 确保地址文字右对齐 */
#headerAddress {
    text-align: right !important;
    white-space: nowrap;
    direction: ltr;
}

.navbar {
    background: #ffffff;
    padding: 15px 0;
    min-height: 0;
    line-height: 1;
    margin: 0;
    margin-top: 0;
}

.navbar .container {
    display: flex;
    justify-content: flex-end;
    align-items: center;
    gap: 30px;
    width: 100% !important;
    padding-right: 20px !important;
    padding-left: 20px !important;
    max-width: 1200px !important;
    margin: 0 auto !important;
    box-sizing: border-box !important;
}

.nav-menu {
    display: flex;
    list-style: none;
    gap: 30px;
    order: 1;
}

.nav-menu > li {
    position: relative;
}

.nav-menu a {
    font-family: var(--font-serif);
    font-size: 20px;
    text-decoration: none;
    color: var(--text-dark);
    font-weight: 500;
    transition: color 0.3s;
    position: relative;
    display: flex;
    align-items: center;
    gap: 5px;
}

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

.nav-menu a.active::after {
    content: '';
    position: absolute;
    bottom: -5px;
    left: 0;
    width: 100%;
    height: 2px;
    background: var(--primary-red);
}

.nav-menu a i {
    font-size: 10px;
    transition: transform 0.3s;
}

/* Dropdown Menu */
.dropdown {
    position: relative;
}

.dropdown-toggle {
    font-family: var(--font-serif);
    cursor: pointer;
}

.dropdown-menu {
    position: absolute;
    top: 100%;
    left: 0;
    margin-top: 10px;
    background: var(--white);
    min-width: 280px;
    box-shadow: 0 8px 25px rgba(0, 0, 0, 0.15);
    border-radius: 8px;
    list-style: none;
    padding: 8px 0;
    margin: 0;
    opacity: 0;
    visibility: hidden;
    transform: translateY(-5px);
    transition: all 0.25s ease;
    z-index: 1001;
    border: 1px solid var(--border-color);
    pointer-events: none;
}

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

/* 确保下拉菜单和父元素之间有连接，避免鼠标移动时菜单关闭 */
.dropdown::before {
    content: '';
    position: absolute;
    top: 100%;
    left: 0;
    right: 0;
    height: 10px;
    background: transparent;
    pointer-events: auto;
    z-index: 1000;
}

/* 确保在下拉菜单区域 hover 时，菜单保持显示 */
.dropdown:hover::before {
    pointer-events: auto;
}

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

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

.dropdown.active .dropdown-toggle i {
    transform: rotate(180deg);
}

.dropdown-menu li {
    margin: 0;
}

.dropdown-menu a {
    font-family: var(--font-serif);
    display: block;
    padding: 12px 20px;
    color: var(--text-dark);
    font-weight: 400;
    transition: all 0.2s ease;
    border-left: 3px solid transparent;
    white-space: nowrap;
    cursor: pointer;
    pointer-events: auto;
    text-decoration: none;
    position: relative;
    z-index: 1002;
}

.dropdown-menu a:hover {
    background: var(--dark-red);
    color: var(--white);
    border-left-color: var(--primary-red);
    padding-left: 25px;
}

.dropdown-menu a::after {
    display: none;
}

.nav-icons {
    display: flex;
    gap: 20px;
    color: var(--text-dark);
    cursor: pointer;
    align-items: center;
    justify-content: flex-end;
    order: 2;
}

.nav-icons i {
    transition: color 0.3s;
}

.nav-icons i:hover {
    color: var(--primary-red);
}

.whatsapp-nav-icon {
    display: inline-flex !important;
    align-items: center !important;
    justify-content: center !important;
    transition: transform 0.3s ease;
    text-decoration: none;
    flex-shrink: 0 !important;
}

.whatsapp-nav-icon img {
    width: 64px;
    height: 64px;
    object-fit: contain;
    display: block;
}

.whatsapp-nav-icon:hover {
    transform: scale(1.1);
}

.language-selector {
    position: relative;
}

.language-dropdown {
    position: absolute;
    top: 100%;
    right: 0;
    background: var(--white);
    border: 1px solid var(--border-color);
    border-radius: 8px;
    box-shadow: 0 8px 25px rgba(0, 0, 0, 0.15);
    min-width: 150px;
    margin-top: 10px;
    display: none;
    z-index: 1000;
    padding: 8px 0;
}

.language-dropdown.active {
    display: block;
}

.language-dropdown ul {
    list-style: none;
    padding: 0;
    margin: 0;
    background: transparent;
}

.language-dropdown li {
    padding: 12px 20px;
    cursor: pointer;
    transition: all 0.2s ease;
    color: var(--text-dark) !important;
    font-family: var(--font-serif);
    font-size: 16px;
    font-weight: 400;
    position: relative;
    text-decoration: none;
    background-color: var(--white) !important;
    margin: 0;
}

.language-dropdown li,
.language-dropdown li span {
    color: var(--text-dark) !important;
}

.language-dropdown li:hover {
    background-color: var(--dark-red) !important;
    color: var(--white) !important;
}

.language-dropdown li:hover,
.language-dropdown li:hover span {
    color: var(--white) !important;
}

.language-dropdown li.active {
    background-color: var(--white) !important;
    color: var(--text-dark) !important;
    font-weight: 400;
}

.language-dropdown li.active,
.language-dropdown li.active span {
    color: var(--text-dark) !important;
}

.language-dropdown li.active:hover {
    background-color: var(--dark-red) !important;
    color: var(--white) !important;
}

.language-dropdown li.active:hover,
.language-dropdown li.active:hover span {
    color: var(--white) !important;
}

.hamburger {
    display: none;
    flex-direction: column;
    gap: 5px;
    cursor: pointer;
}

.hamburger span {
    width: 25px;
    height: 3px;
    background: var(--text-dark);
    transition: all 0.3s;
}

/* Hero Section */
.hero {
    position: relative;
    height: 100vh;
    min-height: 600px;
    overflow: hidden;
    background: #ffffff;
}

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

.hero-slide {
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    opacity: 0;
    transition: opacity 1s ease-in-out;
    display: flex;
    align-items: center;
    justify-content: center;
}

.hero-slide.active {
    opacity: 1;
    z-index: 1;
}

/* 第一张轮播图片的特殊定位 - 确保内容完全居中 */
.hero-slide:first-child,
.hero-slide[data-slide-index="0"] {
    position: absolute;
}

.hero-background {
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background-size: cover;
    background-position: center center;
    background-repeat: no-repeat;
    opacity: 1;
    z-index: 0;
    filter: brightness(1.05) contrast(1.1) saturate(1.05);
    image-rendering: -webkit-optimize-contrast;
    image-rendering: crisp-edges;
}

.hero-wrapper {
    position: relative;
    z-index: 3;
    display: flex;
    justify-content: center;
    align-items: center;
    width: 100%;
    max-width: 1400px;
    padding: 0 40px;
    height: 100%;
}

.hero-content-left {
    display: flex;
    flex-direction: column;
    align-items: center;
    justify-content: center;
    gap: 40px;
    position: relative;
    z-index: 3;
    text-align: center;
    padding: 40px 60px;
    background: transparent;
    backdrop-filter: none;
    -webkit-backdrop-filter: none;
    border-radius: 0;
    box-shadow: none;
    border: none;
}

/* 第一张轮播图片的特殊样式 - 文字居中，无背景框 */
.hero-slide:first-child .hero-content-left,
.hero-slide[data-slide-index="0"] .hero-content-left {
    background: transparent;
    backdrop-filter: none;
    -webkit-backdrop-filter: none;
    border: none;
    box-shadow: none;
    padding: 0;
    position: absolute;
    top: 50%;
    left: 50%;
    transform: translate(-50%, -50%);
    width: 100%;
    max-width: 100%;
    margin: 0;
}

/* 第一张轮播图片的容器样式 - 确保内容居中 */
.hero-slide:first-child .container,
.hero-slide[data-slide-index="0"] .container {
    position: relative;
    width: 100%;
    height: 100%;
    display: flex;
    align-items: center;
    justify-content: center;
}

.hero-title {
    font-family: var(--font-serif);
    font-size: 64px;
    font-weight: 700;
    line-height: 1.2;
    color: #001a1a;
    margin: 0;
    text-align: center;
    -webkit-font-smoothing: antialiased;
    -moz-osx-font-smoothing: grayscale;
    display: flex;
    flex-direction: column;
    gap: 0;
    text-shadow: 2px 2px 8px rgba(0, 0, 0, 0.3),
                 0 0 20px rgba(255, 255, 255, 0.5),
                 1px 1px 3px rgba(0, 0, 0, 0.5);
}

.hero-title-line1,
.hero-title-line2 {
    display: block;
    line-height: 1.2;
    position: relative;
}

.hero-title-line1 {
    color: #001a1a;
    font-weight: 700;
    text-shadow: 2px 2px 8px rgba(0, 0, 0, 0.3),
                 0 0 20px rgba(255, 255, 255, 0.5),
                 1px 1px 3px rgba(0, 0, 0, 0.5);
}

.hero-title-line2 {
    color: #001a1a;
    font-weight: 700;
    text-shadow: 2px 2px 8px rgba(0, 0, 0, 0.3),
                 0 0 20px rgba(255, 255, 255, 0.5),
                 1px 1px 3px rgba(0, 0, 0, 0.5);
}

/* 第一张轮播图片的文字样式 - 黑红色，纯色显示 */
.hero-slide:first-child .hero-title-line1,
.hero-slide:first-child .hero-title-line2,
.hero-slide[data-slide-index="0"] .hero-title-line1,
.hero-slide[data-slide-index="0"] .hero-title-line2 {
    color: #8B0000;
    font-weight: 800;
    /* 增强文字阴影，让文字在不同背景下都清晰可见 */
    text-shadow: 
        3px 3px 12px rgba(139, 0, 0, 0.6),
        0 0 35px rgba(255, 255, 255, 0.9),
        2px 2px 6px rgba(139, 0, 0, 0.8),
        -1px -1px 3px rgba(255, 255, 255, 0.4),
        0 0 15px rgba(139, 0, 0, 0.4);
    /* 添加文字描边效果，增强对比度 */
    -webkit-text-stroke: 0.8px rgba(139, 0, 0, 0.5);
    filter: drop-shadow(0 0 12px rgba(139, 0, 0, 0.4)) 
            drop-shadow(0 0 8px rgba(255, 255, 255, 0.3));
}

/* 第一张轮播图片的标题容器样式 */
.hero-slide:first-child .hero-title,
.hero-slide[data-slide-index="0"] .hero-title {
    color: #8B0000;
    text-shadow: 
        3px 3px 12px rgba(139, 0, 0, 0.6),
        0 0 35px rgba(255, 255, 255, 0.9),
        2px 2px 6px rgba(139, 0, 0, 0.8);
}

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

.btn-play {
    width: 60px;
    height: 60px;
    border-radius: 50%;
    border: 2px solid var(--primary-red);
    background: transparent;
    color: var(--primary-red);
    display: flex;
    align-items: center;
    justify-content: center;
    cursor: pointer;
    transition: all 0.3s;
    padding: 0;
}

.btn-play:hover {
    background: var(--primary-red);
    color: var(--white);
    transform: scale(1.1);
}

.btn-play i {
    font-size: 16px;
    margin-left: 2px;
    color: var(--primary-red);
}

.btn-play:hover i {
    color: var(--white);
}

.hero-content-right {
    position: relative;
    display: flex;
    justify-content: center;
    align-items: center;
    z-index: 3;
}

.hero-product-display {
    position: relative;
    width: 100%;
    max-width: 600px;
    height: 100%;
    min-height: 500px;
    display: flex;
    align-items: center;
    justify-content: center;
    transform: perspective(1000px) rotateY(-15deg) rotateX(5deg);
    transform-style: preserve-3d;
    transition: transform 0.3s;
}

.hero-product-display:hover {
    transform: perspective(1000px) rotateY(-12deg) rotateX(3deg) scale(1.02);
}

.hero-product-display .product-image {
    width: 100%;
    height: 100%;
    object-fit: contain;
    object-position: center;
    border-radius: 10px;
    box-shadow: 0 20px 60px rgba(0, 0, 0, 0.15);
    display: block;
    border: none;
    outline: none;
}

.hero-overlay {
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    background: linear-gradient(to right, rgba(255, 255, 255, 0.6) 0%, rgba(255, 255, 255, 0.3) 35%, rgba(255, 255, 255, 0.1) 60%, transparent 85%);
    z-index: 2;
    pointer-events: none;
}

.hero-controls {
    position: absolute;
    top: 50%;
    transform: translateY(-50%);
    width: 100%;
    display: flex;
    justify-content: space-between;
    padding: 0 20px;
    z-index: 4;
    pointer-events: none;
}

.hero-prev,
.hero-next {
    background: rgba(255, 255, 255, 0.9);
    border: 2px solid var(--primary-red);
    width: 50px;
    height: 50px;
    border-radius: 50%;
    color: var(--primary-red);
    font-size: 20px;
    cursor: pointer;
    transition: all 0.3s;
    pointer-events: all;
    display: flex;
    align-items: center;
    justify-content: center;
    box-shadow: 0 4px 15px rgba(0, 0, 0, 0.1);
}

.hero-prev:hover,
.hero-next:hover {
    background: var(--primary-red);
    color: var(--white);
    transform: scale(1.1);
    box-shadow: 0 6px 20px rgba(139, 0, 0, 0.3);
}

.hero-indicators {
    position: absolute;
    bottom: 30px;
    left: 50%;
    transform: translateX(-50%);
    display: flex;
    gap: 10px;
    z-index: 4;
}

.indicator {
    width: 12px;
    height: 12px;
    border-radius: 50%;
    background: transparent;
    cursor: pointer;
    transition: all 0.3s;
    border: 2px solid var(--primary-red);
}

.indicator:hover {
    background: rgba(139, 0, 0, 0.3);
}

.indicator.active {
    background: var(--primary-red);
    width: 30px;
    border-radius: 6px;
    border-color: var(--primary-red);
}

/* Buttons */
.btn {
    padding: 14px 35px;
    border: none;
    border-radius: 50px;
    font-size: 16px;
    font-weight: 500;
    cursor: pointer;
    transition: all 0.3s;
    display: inline-flex;
    align-items: center;
    justify-content: center;
    gap: 10px;
    text-decoration: none;
}

.btn-primary {
    background: var(--primary-red);
    color: var(--white);
    border-radius: 50px;
    padding: 14px 35px;
    font-weight: 500;
    border: none;
}

.btn-primary:hover {
    background: var(--dark-red);
    transform: translateY(-2px);
    box-shadow: 0 5px 15px rgba(139, 0, 0, 0.3);
}

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

.btn-outline:hover {
    background: var(--primary-red);
    color: var(--white);
}

/* Section Styles */
section {
    padding: 80px 0;
}

.section-title {
    font-family: var(--font-serif);
    font-size: 40px;
    font-weight: bold;
    text-align: center;
    margin-bottom: 50px;
    color: var(--text-dark);
}

.text-center {
    text-align: center;
    margin-top: 40px;
}

/* Application Solution Section */
.application-solution {
    background: var(--gray-bg);
}

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

.solution-card {
    background: var(--white);
    border: 2px solid var(--border-color);
    border-radius: 10px;
    padding: 40px 20px;
    text-align: center;
    transition: all 0.3s;
    cursor: pointer;
    display: block;
    text-decoration: none;
    color: inherit;
}

.solution-card:hover {
    border-color: var(--primary-red);
    transform: translateY(-5px);
    box-shadow: 0 10px 30px rgba(139, 0, 0, 0.1);
}

.solution-icon {
    font-size: 48px;
    color: var(--primary-red);
    margin-bottom: 20px;
}

.solution-card h3 {
    font-size: 18px;
    color: var(--text-dark);
}

/* Product Display Section */
.product-display-section {
    background: #ffffff;
}

.product-display-title {
    font-family: var(--font-serif);
    font-size: 40px;
    font-weight: bold;
    text-align: center;
    margin-bottom: 50px;
    color: var(--text-dark);
}

.product-display-grid {
    display: flex;
    flex-direction: column;
    gap: 60px;
    margin-bottom: 40px;
}

.product-display-item {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 60px;
    align-items: center;
    position: relative;
}

.product-display-item:not(:first-child)::before {
    content: '';
    position: absolute;
    top: -30px;
    left: 0;
    right: 0;
    height: 1px;
    border-top: 1px dashed #8b0000;
    z-index: 1;
}

.product-display-item-reverse {
    direction: rtl;
}

.product-display-item-reverse > * {
    direction: ltr;
}

.product-display-image-wrapper {
    position: relative;
    display: flex;
    flex-direction: column;
    align-items: center;
    justify-content: flex-start;
    gap: 20px;
    min-height: 500px;
}

.product-display-main-image {
    width: 100%;
    height: auto;
    max-height: 400px;
    object-fit: contain;
    border-radius: 10px;
    display: block;
}

.product-display-images-grid {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 15px;
    width: 100%;
}

.product-display-small-image {
    width: 100%;
    height: auto;
    max-height: 200px;
    object-fit: contain;
    border-radius: 8px;
    display: block;
    border: 1px solid var(--border-color);
}

.product-display-detail-image {
    position: absolute;
    bottom: 20px;
    right: 20px;
    width: 120px;
    height: 120px;
    object-fit: cover;
    border-radius: 50%;
    border: 3px solid var(--white);
    box-shadow: 0 4px 12px rgba(0, 0, 0, 0.15);
    display: block;
}

.product-display-content {
    padding: 20px;
}

.product-display-content h2 {
    font-family: var(--font-serif);
    font-size: 36px;
    margin: 0 0 20px;
    color: var(--text-dark);
}

.product-display-content p {
    font-size: 16px;
    line-height: 1.8;
    color: var(--text-light);
    margin-bottom: 15px;
}

.product-display-content .btn {
    margin-top: 20px;
}

.product-display-specs {
    list-style: none;
    padding: 0;
    margin: 20px 0;
}

.product-display-specs li {
    font-size: 16px;
    line-height: 1.8;
    color: var(--text-light);
    margin-bottom: 10px;
    padding-left: 20px;
    position: relative;
}

.product-display-specs li::before {
    content: '•';
    position: absolute;
    left: 0;
    color: var(--primary-red);
    font-weight: bold;
    font-size: 20px;
}

/* Product Section */
.product-section {
    background: var(--gray-bg);
    position: relative;
}

.product-section::before {
    content: '';
    position: absolute;
    top: 0;
    left: 50%;
    transform: translateX(-50%);
    width: 80%;
    max-width: 1000px;
    height: 1px;
    border-top: 1px dashed #8b0000;
}

.product-section:first-of-type::before {
    display: none;
}

.product-section-alt {
    background: var(--gray-bg);
    position: relative;
}

.product-section-alt::before {
    content: '';
    position: absolute;
    top: 0;
    left: 50%;
    transform: translateX(-50%);
    width: 80%;
    max-width: 1000px;
    height: 1px;
    border-top: 1px dashed #8b0000;
}

.product-item {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 60px;
    align-items: center;
    position: relative;
    z-index: 1;
}

.product-item-reverse {
    direction: rtl;
}

.product-item-reverse > * {
    direction: ltr;
}

.product-image {
    position: relative;
    display: flex;
    align-items: center;
    min-height: 400px;
}

.product-img {
    width: 100%;
    height: auto;
    max-height: 500px;
    object-fit: contain;
    border-radius: 10px;
    display: block;
}

.image-placeholder {
    width: 100%;
    height: 400px;
    background: linear-gradient(135deg, #5C0000 0%, #8B0000 100%);
    border-radius: 10px;
    display: flex;
    align-items: center;
    justify-content: center;
    color: var(--white);
    font-size: 18px;
    position: relative;
    overflow: hidden;
}

.product-img-1::before {
    content: '工业触控屏系统';
    position: absolute;
    z-index: 1;
}

.product-img-2::before {
    content: '触控显示模块';
    position: absolute;
    z-index: 1;
}

.product-img-3::before {
    content: '触控屏一体机';
    position: absolute;
    z-index: 1;
}

.product-content {
    padding: 20px;
}

.product-label {
    font-family: var(--font-serif);
    font-size: 14px;
    color: var(--primary-red);
    font-weight: 600;
    letter-spacing: 1px;
    text-transform: uppercase;
}

.product-content h2 {
    font-family: var(--font-serif);
    font-size: 36px;
    margin: 15px 0 20px;
    color: var(--text-dark);
}

.product-content p {
    font-size: 16px;
    line-height: 1.8;
    color: var(--text-light);
    margin-bottom: 30px;
}

/* Why Choose Us Section */
.why-choose-us {
    background: var(--white);
    text-align: center;
}

.stats-container {
    display: flex;
    justify-content: center;
    gap: 100px;
    margin-bottom: 60px;
    flex-wrap: wrap;
}

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

.stat-number {
    font-size: 72px;
    font-weight: bold;
    color: var(--primary-red);
    line-height: 1;
    margin-bottom: 10px;
}

.stat-label {
    font-size: 18px;
    color: var(--text-light);
}

.why-content {
    max-width: 800px;
    margin: 0 auto;
}

.why-content h3 {
    font-size: 28px;
    margin-bottom: 20px;
    color: var(--text-dark);
}

.why-content p {
    font-size: 16px;
    line-height: 1.8;
    color: var(--text-light);
    margin-bottom: 30px;
}

.learn-more-link {
    color: var(--primary-red);
    text-decoration: none;
    font-weight: bold;
    display: inline-flex;
    align-items: center;
    gap: 8px;
    transition: gap 0.3s;
    font-size: 16px;
}

.learn-more-link i {
    color: var(--primary-red);
    font-size: 14px;
}

.learn-more-link:hover {
    gap: 12px;
    color: var(--dark-red);
}

.learn-more-link:hover i {
    color: var(--dark-red);
}

/* Availability Section */
.availability {
    background: var(--gray-bg);
}

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

.availability-text {
    display: flex;
    flex-direction: column;
    align-items: center;
    text-align: center;
}

.availability-text .section-title {
    text-align: center;
    width: 100%;
}

.industries-list {
    display: grid;
    grid-template-columns: repeat(2, 1fr);
    gap: 20px;
    margin: 30px 0;
    width: 100%;
}

.availability-text .btn {
    margin-top: 20px;
    align-self: center;
}

.industry-item {
    padding: 20px;
    background: var(--white);
    border-radius: 8px;
    text-align: center;
    font-size: 18px;
    font-weight: 500;
    color: var(--text-dark);
    box-shadow: 0 2px 10px rgba(0, 0, 0, 0.05);
    transition: all 0.3s;
}

.industry-item:hover {
    transform: translateY(-3px);
    box-shadow: 0 5px 20px rgba(139, 0, 0, 0.1);
    color: var(--primary-red);
}

.availability-images {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 20px;
}

.availability-img {
    width: 100%;
    height: auto;
    object-fit: cover;
    border-radius: 10px;
    display: block;
}

.availability-img-1,
.availability-img-2 {
    height: 250px;
    background: linear-gradient(135deg, #5C0000 0%, #8B0000 100%);
    border-radius: 10px;
}

.availability-img-1::before {
    content: '场景展示 1';
    position: absolute;
    color: var(--white);
    z-index: 1;
}

.availability-img-2::before {
    content: '场景展示 2';
    position: absolute;
    color: var(--white);
    z-index: 1;
}

/* Showcase Section */
.showcase {
    background: var(--gray-bg);
}

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

.showcase-item {
    background: var(--white);
    border-radius: 10px;
    overflow: hidden;
    box-shadow: 0 5px 20px rgba(0, 0, 0, 0.1);
    transition: all 0.3s;
}

.showcase-item:hover {
    transform: translateY(-5px);
    box-shadow: 0 10px 30px rgba(139, 0, 0, 0.2);
}

.showcase-thumbnail {
    position: relative;
    height: 250px;
    overflow: visible;
    display: flex;
    align-items: center;
    justify-content: center;
    background: transparent;
}

.showcase-img {
    max-width: 100%;
    max-height: 100%;
    width: auto;
    height: auto;
    object-fit: contain;
    object-position: center;
    display: block;
}

.showcase-img-1,
.showcase-img-2,
.showcase-img-3 {
    height: 100%;
    background: linear-gradient(135deg, #5C0000 0%, #8B0000 100%);
}

.play-button {
    position: absolute;
    top: 50%;
    left: 50%;
    transform: translate(-50%, -50%);
    width: 60px;
    height: 60px;
    background: rgba(255, 255, 255, 0.9);
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    cursor: pointer;
    transition: all 0.3s;
    z-index: 2;
}

.play-button:hover {
    background: var(--white);
    transform: translate(-50%, -50%) scale(1.1);
}

.play-button i {
    color: var(--primary-red);
    font-size: 20px;
    margin-left: 3px;
}

.showcase-item h3 {
    font-size: 22px;
    margin: 20px 20px 10px;
    color: var(--text-dark);
}

.showcase-item p {
    font-size: 14px;
    color: var(--text-light);
    margin: 0 20px 20px;
    line-height: 1.6;
}

.showcase-item .learn-more-link {
    margin: 0 20px 20px;
    display: block;
}

/* Contact Section */
.contact-section {
    background: #ffffff;
}

.contact-wrapper {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 60px;
}

.contact-info h2,
.contact-form-wrapper h2 {
    font-family: var(--font-serif);
    font-size: 32px;
    margin-bottom: 30px;
    color: var(--text-dark);
}

.contact-details {
    display: flex;
    flex-direction: column;
    gap: 20px;
}

.contact-detail-item {
    display: flex;
    align-items: center;
    gap: 15px;
    font-size: 18px;
    color: var(--text-dark);
}

.contact-detail-item i {
    color: var(--primary-red);
    font-size: 20px;
}

.whatsapp-icon {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    margin-left: 15px;
    transition: transform 0.3s ease;
}

.whatsapp-icon img {
    width: 96px;
    height: 96px;
    object-fit: contain;
}

.whatsapp-icon:hover {
    transform: scale(1.1);
}

.contact-form-wrapper h2 {
    font-size: 32px;
    margin-bottom: 30px;
    color: var(--text-dark);
}

.contact-form {
    display: flex;
    flex-direction: column;
    gap: 20px;
}

.form-group {
    display: flex;
    flex-direction: column;
}

.form-group label {
    font-size: 14px;
    font-weight: 600;
    color: var(--text-dark);
    margin-bottom: 8px;
    text-transform: uppercase;
}

.form-group label .required {
    color: var(--primary-red);
    margin-left: 3px;
}

.form-group input,
.form-group textarea {
    width: 100%;
    padding: 15px;
    border: 2px solid var(--border-color);
    border-radius: 5px;
    font-size: 16px;
    font-family: inherit;
    transition: border-color 0.3s;
}

.form-group input:focus,
.form-group textarea:focus {
    outline: none;
    border-color: var(--primary-red);
}

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

.form-group input::placeholder,
.form-group textarea::placeholder {
    color: var(--text-light);
}

/* Footer */
.footer {
    background: var(--gray-bg);
    color: var(--text-dark);
    padding: 60px 0 0;
    position: relative;
}
.footer::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    height: 1px;
    background: linear-gradient(to right, transparent 0%, rgba(0, 0, 0, 0.1) 15%, rgba(0, 0, 0, 0.15) 50%, rgba(0, 0, 0, 0.1) 85%, transparent 100%);
    box-shadow: 0 1px 3px rgba(0, 0, 0, 0.05);
}

.footer-content {
    display: grid;
    grid-template-columns: 2fr 1fr 1fr 1fr;
    gap: 60px;
    margin-bottom: 0;
    padding-bottom: 40px;
}

.footer-company .logo-img {
    width: 180px;
    height: 40px;
    object-fit: contain;
    display: block;
}

.footer-company .logo-text {
    font-family: var(--font-serif);
    color: var(--red);
    font-size: 24px;
    font-weight: bold;
}

.footer-company .logo-text sup {
    font-size: 12px;
    vertical-align: super;
}

.footer-company .logo-subtitle {
    color: var(--text-light);
    font-size: 12px;
    letter-spacing: 1px;
    margin-top: 5px;
    display: block;
}

.company-description {
    margin: 20px 0;
    color: var(--text-light);
    font-size: 14px;
    line-height: 1.6;
}

.footer-column h4 {
    font-size: 18px;
    font-weight: 600;
    margin-bottom: 3px;
    color: var(--text-dark);
}

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

.footer-column ul li {
    margin-bottom: 2px;
}

.footer-column ul li a {
    color: var(--text-light);
    text-decoration: none;
    transition: color 0.3s;
    font-size: 14px;
}

.footer-column ul li a:hover {
    color: var(--primary-red);
}

.contact-list li {
    display: flex;
    align-items: flex-start;
    gap: 12px;
    margin-bottom: 2px;
}

.contact-list li i {
    color: var(--text-dark);
    font-size: 16px;
    margin-top: 2px;
    flex-shrink: 0;
}

.contact-list li span {
    color: var(--text-light);
    font-size: 14px;
    line-height: 1.5;
}

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

.social-icons a {
    width: 36px;
    height: 36px;
    background: transparent;
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    color: var(--text-light);
    text-decoration: none;
    transition: all 0.3s;
    border: 1px solid var(--border-color);
}

.social-icons a:hover {
    background: var(--primary-red);
    color: var(--white);
    border-color: var(--primary-red);
    transform: translateY(-2px);
}

.footer-bottom {
    background: #faf9f6;
    padding: 20px 0;
    border-top: 1px solid var(--border-color);
}

.footer-bottom-content {
    display: flex;
    justify-content: flex-end;
    align-items: center;
    flex-wrap: wrap;
    gap: 20px;
}

.show-menu {
    color: var(--text-light);
    font-size: 12px;
}

.copyright {
    color: var(--text-light);
    font-size: 14px;
    margin: 0;
    text-align: right;
}

.scroll-to-top {
    position: fixed;
    bottom: 30px;
    right: 30px;
    width: 56px;
    height: 56px;
    background: linear-gradient(135deg, var(--primary-red) 0%, var(--dark-red) 100%);
    border: none;
    border-radius: 50%;
    color: var(--white);
    font-size: 20px;
    cursor: pointer;
    transition: all 0.3s ease;
    display: flex;
    align-items: center;
    justify-content: center;
    opacity: 0;
    visibility: hidden;
    z-index: 1000;
    box-shadow: 0 4px 16px rgba(139, 0, 0, 0.3);
    pointer-events: none;
}

.scroll-to-top.visible {
    opacity: 1;
    visibility: visible;
    pointer-events: auto;
}

.scroll-to-top:hover {
    background: linear-gradient(135deg, var(--dark-red) 0%, var(--primary-red) 100%);
    transform: translateY(-5px);
    box-shadow: 0 8px 24px rgba(139, 0, 0, 0.5);
}

.scroll-to-top i {
    color: var(--white);
}

/* Footer Responsive */
@media (max-width: 1024px) {
    .footer-content {
        grid-template-columns: 1fr 1fr;
        gap: 40px;
    }
}

@media (max-width: 768px) {
    .footer-content {
        grid-template-columns: 1fr;
        gap: 30px;
    }
    
    .footer-bottom-content {
        flex-direction: column;
        align-items: flex-end;
    }
    
    .show-menu {
        order: 3;
    }
    
    .copyright {
        order: 1;
        text-align: right;
    }
    
    .scroll-to-top {
        order: 2;
    }
}

/* Responsive Design */
@media (max-width: 1024px) {
    .solution-grid {
        grid-template-columns: repeat(2, 1fr);
    }
    
    .product-display-item {
        grid-template-columns: 1fr;
        gap: 40px;
    }
    
    .product-display-item-reverse {
        direction: ltr;
    }
    
    .product-display-images-grid {
        grid-template-columns: 1fr;
    }
    
    .product-display-detail-image {
        position: relative;
        bottom: auto;
        right: auto;
        margin-top: 15px;
    }
    
    .product-item {
        grid-template-columns: 1fr;
        gap: 40px;
    }
    
    .product-item-reverse {
        direction: ltr;
    }
    
    .availability-content {
        grid-template-columns: 1fr;
    }
    
    .showcase-grid {
        grid-template-columns: repeat(2, 1fr);
    }
    
    .contact-wrapper {
        grid-template-columns: 1fr;
    }
    
    .footer-content {
        grid-template-columns: 1fr 1fr;
    }
}

@media (max-width: 768px) {
    .logo-img {
        width: 195px; /* 移动端稍微缩小 */
        height: 44px;
    }
    
    .header-top-content {
        gap: 10px; /* 减少间距 */
    }
    
    .hamburger {
        display: flex;
    }
    
    .nav-menu {
        position: fixed;
        left: -100%;
        top: 80px;
        flex-direction: column;
        background: var(--white);
        width: 100%;
        text-align: left;
        transition: 0.3s;
        box-shadow: 0 10px 27px rgba(0, 0, 0, 0.05);
        padding: 20px 0;
        max-height: calc(100vh - 80px);
        overflow-y: auto;
    }
    
    .nav-menu.active {
        left: 0;
    }
    
    .nav-menu > li {
        width: 100%;
        border-bottom: 1px solid var(--border-color);
    }
    
    .nav-menu > li:last-child {
        border-bottom: none;
    }
    
    .nav-menu a {
        padding: 15px 20px;
        display: flex;
        justify-content: space-between;
        align-items: center;
    }
    
    .nav-menu a.active::after {
        display: none;
    }
    
    .dropdown-menu {
        position: static;
        opacity: 1;
        visibility: visible;
        transform: none;
        box-shadow: none;
        margin: 0;
        padding: 0;
        background: var(--gray-bg);
        border-radius: 0;
        max-height: 0;
        overflow: hidden;
        transition: max-height 0.3s ease;
    }
    
    .dropdown.active .dropdown-menu {
        max-height: 500px;
        padding: 10px 0;
    }
    
    .dropdown-menu a {
        padding: 12px 40px;
        font-size: 14px;
    }
    
    .header-contact {
        flex-direction: column !important;
        gap: 10px;
        align-items: flex-end !important;
        justify-content: center !important;
        margin-left: auto !important;
        margin-right: 0 !important;
        text-align: right !important;
    }
    
    .contact-item {
        justify-content: flex-end !important;
        text-align: right !important;
        align-items: center !important;
    }
    
    .hero-wrapper {
        grid-template-columns: 1fr;
        gap: 40px;
        padding: 0 20px;
    }
    
    .hero-content-right {
        order: -1;
    }
    
    .hero-product-display {
        transform: perspective(1000px) rotateY(-10deg) rotateX(3deg);
        max-width: 100%;
        min-height: 400px;
    }
    
    .hero-title {
        font-size: 42px;
        text-align: center;
        gap: 8px;
    }
    
    .hero-title-line1,
    .hero-title-line2 {
        color: #004d4d;
        text-shadow: none;
        -webkit-text-stroke: none;
    }
    
    .hero-content-left {
        align-items: center;
        text-align: center;
    }
    
    .hero-buttons {
        justify-content: center;
    }
    
    .section-title {
        font-size: 32px;
    }
    
    .solution-grid {
        grid-template-columns: 1fr;
    }
    
    .product-display-item {
        grid-template-columns: 1fr;
        gap: 30px;
    }
    
    .product-display-item-reverse {
        direction: ltr;
    }
    
    .product-display-content h2 {
        font-size: 28px;
    }
    
    .stats-container {
        gap: 50px;
    }
    
    .stat-number {
        font-size: 56px;
    }
    
    .showcase-grid {
        grid-template-columns: 1fr;
    }
    
    .footer-content {
        grid-template-columns: 1fr;
        gap: 40px;
    }
    
    .availability-images {
        grid-template-columns: 1fr;
    }
}

@media (max-width: 480px) {
    .logo-img {
        width: 180px; /* 小屏幕进一步缩小 */
        height: 39px;
    }
    
    .header-top {
        padding: 8px 0; /* 减少顶部padding */
    }
    
    .header-top-content {
        gap: 8px;
    }
    
    .header-contact {
        gap: 10px; /* 减少联系信息间距 */
        font-size: 12px;
    }
    
    .hero {
        height: 100vh;
        min-height: 500px;
    }
    
    .hero-title {
        font-size: 32px;
        gap: 6px;
    }
    
    .hero-title-line1,
    .hero-title-line2 {
        color: #004d4d;
        text-shadow: none;
        -webkit-text-stroke: none;
    }
    
    .hero-wrapper {
        grid-template-columns: 1fr;
        gap: 30px;
        padding: 0 15px;
    }
    
    .hero-content-right {
        order: -1;
    }
    
    .hero-product-display {
        transform: perspective(800px) rotateY(-8deg) rotateX(2deg);
        min-height: 300px;
    }
    
    .hero-buttons {
        flex-direction: column;
        width: 100%;
    }
    
    .btn-play {
        width: 50px;
        height: 50px;
    }
    
    .hero-controls {
        padding: 0 10px;
    }
    
    .hero-prev,
    .hero-next {
        width: 40px;
        height: 40px;
        font-size: 16px;
    }
    
    .hero-indicators {
        bottom: 20px;
    }
    
    .section-title {
        font-size: 28px;
    }
    
    .product-content h2 {
        font-size: 28px;
    }
    
    .stat-number {
        font-size: 48px;
    }
}