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

html {
    scroll-behavior: smooth;
}

body {
    font-family: 'Noto Sans SC', 'Arial', sans-serif;
    background: #0a0a0a;
    color: #ffffff;
    line-height: 1.6;
    overflow-x: hidden;
}

/* 粒子背景 */
#particles-js {
    position: fixed;
    width: 100%;
    height: 100%;
    top: 0;
    left: 0;
    z-index: -1;
    background: linear-gradient(135deg, #0a0a0a 0%, #1a1a2e 50%, #16213e 100%);
}

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

/* 导航栏 */
.navbar {
    position: fixed;
    top: 0;
    left: 0;
    right: 0;
    background: linear-gradient(135deg, rgba(10, 10, 10, 0.95) 0%, rgba(20, 20, 30, 0.95) 100%);
    backdrop-filter: blur(25px);
    border-bottom: 2px solid transparent;
    border-image: linear-gradient(90deg, rgba(0, 209, 178, 0.3), rgba(0, 255, 153, 0.3), rgba(255, 0, 255, 0.3)) 1;
    z-index: 1000;
    transition: all 0.4s cubic-bezier(0.4, 0, 0.2, 1);
    box-shadow: 0 2px 30px rgba(0, 209, 178, 0.1);
}

.navbar::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    background: linear-gradient(90deg, 
        rgba(0, 209, 178, 0.05) 0%, 
        rgba(0, 255, 153, 0.05) 25%, 
        rgba(255, 0, 255, 0.05) 50%, 
        rgba(0, 255, 153, 0.05) 75%, 
        rgba(0, 209, 178, 0.05) 100%);
    opacity: 0;
    transition: opacity 0.3s ease;
    pointer-events: none;
}

.navbar:hover::before {
    opacity: 1;
}

.navbar.scrolled {
    background: linear-gradient(135deg, rgba(5, 5, 5, 0.98) 0%, rgba(15, 15, 25, 0.98) 100%);
    box-shadow: 0 8px 40px rgba(0, 209, 178, 0.2), 0 0 60px rgba(0, 255, 153, 0.1);
    border-image: linear-gradient(90deg, rgba(0, 209, 178, 0.6), rgba(0, 255, 153, 0.6), rgba(255, 0, 255, 0.6)) 1;
}

.nav-container {
    max-width: 1200px;
    margin: 0 auto;
    padding: 0 30px;
    display: flex;
    justify-content: space-between;
    align-items: center;
    height: 80px;
    position: relative;
}

.nav-logo {
    display: flex;
    align-items: center;
    gap: 12px;
    font-family: 'Orbitron', monospace;
    font-weight: 700;
    font-size: 1.6rem;
    color: #00d1b2;
    cursor: pointer;
    transition: all 0.3s ease;
    position: relative;
}

.nav-logo::before {
    content: '';
    position: absolute;
    top: -5px;
    left: -10px;
    right: -10px;
    bottom: -5px;
    background: linear-gradient(45deg, rgba(0, 209, 178, 0.1), rgba(0, 255, 153, 0.1));
    border-radius: 10px;
    opacity: 0;
    transition: opacity 0.3s ease;
    z-index: -1;
}

.nav-logo:hover::before {
    opacity: 1;
}

.nav-logo:hover {
    transform: translateY(-2px);
    text-shadow: 0 0 20px rgba(0, 209, 178, 0.5);
}

.nav-logo i {
    font-size: 2.2rem;
    background: linear-gradient(45deg, #00d1b2, #00ff99, #ff00ff);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    animation: rotate 15s linear infinite;
    filter: drop-shadow(0 0 10px rgba(0, 209, 178, 0.3));
    transition: all 0.3s ease;
}

.nav-logo:hover i {
    animation-duration: 2s;
    filter: drop-shadow(0 0 20px rgba(0, 209, 178, 0.6));
}

@keyframes rotate {
    from { transform: rotateY(0deg); }
    to { transform: rotateY(360deg); }
}

.nav-menu {
    display: flex;
    gap: 35px;
    align-items: center;
}

.nav-link {
    color: #ffffff;
    text-decoration: none;
    font-weight: 500;
    font-size: 1rem;
    transition: all 0.4s cubic-bezier(0.4, 0, 0.2, 1);
    position: relative;
    padding: 12px 18px;
    border-radius: 25px;
    overflow: hidden;
}

.nav-link::before {
    content: '';
    position: absolute;
    top: 0;
    left: -100%;
    width: 100%;
    height: 100%;
    background: linear-gradient(90deg, transparent, rgba(0, 209, 178, 0.2), transparent);
    transition: left 0.6s ease;
}

.nav-link::after {
    content: '';
    position: absolute;
    bottom: 8px;
    left: 50%;
    width: 0;
    height: 2px;
    background: linear-gradient(45deg, #00d1b2, #00ff99, #ff00ff);
    transition: all 0.4s cubic-bezier(0.4, 0, 0.2, 1);
    transform: translateX(-50%);
    border-radius: 2px;
}

.nav-link:hover {
    color: #00ff99;
    background: rgba(0, 209, 178, 0.1);
    transform: translateY(-2px);
    text-shadow: 0 0 15px rgba(0, 255, 153, 0.4);
    box-shadow: 0 5px 20px rgba(0, 209, 178, 0.2);
}

.nav-link:hover::before {
    left: 100%;
}

.nav-link:hover::after {
    width: 60%;
    box-shadow: 0 0 10px rgba(0, 209, 178, 0.5);
}

.nav-link:active {
    transform: translateY(0);
}

.nav-toggle {
    display: none;
    flex-direction: column;
    cursor: pointer;
    gap: 5px;
    padding: 10px;
    border-radius: 8px;
    transition: all 0.3s ease;
    position: relative;
}

.nav-toggle:hover {
    background: rgba(0, 209, 178, 0.1);
    transform: scale(1.1);
}

.nav-toggle span {
    width: 28px;
    height: 3px;
    background: linear-gradient(45deg, #00d1b2, #00ff99);
    transition: all 0.4s cubic-bezier(0.4, 0, 0.2, 1);
    border-radius: 2px;
    box-shadow: 0 0 5px rgba(0, 209, 178, 0.3);
}

.nav-toggle:hover span {
    box-shadow: 0 0 10px rgba(0, 209, 178, 0.6);
}

/* 英雄区域 */
.hero {
    min-height: 100vh;
    display: flex;
    align-items: center;
    padding: 100px 0 50px;
    position: relative;
    overflow: hidden;
}

.hero-content {
    flex: 1;
    max-width: 600px;
    z-index: 2;
    padding: 0 20px;
}

.hero-title {
    font-family: 'Orbitron', monospace;
    margin-bottom: 20px;
}

.title-main {
    display: block;
    font-size: 4rem;
    font-weight: 900;
    background: linear-gradient(45deg, #00d1b2, #00ff99, #ffffff);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    animation: glow 2s ease-in-out infinite alternate;
}

.title-sub {
    display: block;
    font-size: 2rem;
    font-weight: 400;
    color: #888;
    margin-top: 10px;
}

@keyframes glow {
    from { text-shadow: 0 0 20px rgba(0, 209, 178, 0.5); }
    to { text-shadow: 0 0 30px rgba(0, 255, 153, 0.8); }
}

.hero-description {
    font-size: 1.2rem;
    color: #ccc;
    margin-bottom: 30px;
    line-height: 1.8;
}

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

.btn {
    display: inline-flex;
    align-items: center;
    gap: 10px;
    padding: 15px 30px;
    border: none;
    border-radius: 50px;
    text-decoration: none;
    font-weight: 600;
    transition: all 0.3s ease;
    cursor: pointer;
    position: relative;
    overflow: hidden;
}

.btn-primary {
    background: linear-gradient(45deg, #00d1b2, #00ff99);
    color: #000;
}

.btn-secondary {
    background: transparent;
    color: #00d1b2;
    border: 2px solid #00d1b2;
}

.btn:hover {
    transform: translateY(-2px);
    box-shadow: 0 10px 30px rgba(0, 209, 178, 0.3);
}

.btn-secondary:hover {
    background: #00d1b2;
    color: #000;
}

/* 3D立方体 */
.hero-visual {
    flex: 1;
    display: flex;
    justify-content: center;
    align-items: center;
    perspective: 1000px;
}

.floating-cube {
    width: 200px;
    height: 200px;
    position: relative;
    transform-style: preserve-3d;
    animation: float 6s ease-in-out infinite;
}

@keyframes float {
    0%, 100% { transform: rotateX(0deg) rotateY(0deg) translateY(0px); }
    25% { transform: rotateX(15deg) rotateY(90deg) translateY(-20px); }
    50% { transform: rotateX(0deg) rotateY(180deg) translateY(0px); }
    75% { transform: rotateX(-15deg) rotateY(270deg) translateY(-20px); }
}

.cube-face {
    position: absolute;
    width: 200px;
    height: 200px;
    background: linear-gradient(45deg, rgba(0, 209, 178, 0.3), rgba(0, 255, 153, 0.3));
    border: 2px solid #00d1b2;
    backdrop-filter: blur(10px);
}

.cube-face.front { transform: translateZ(100px); }
.cube-face.back { transform: rotateY(180deg) translateZ(100px); }
.cube-face.right { transform: rotateY(90deg) translateZ(100px); }
.cube-face.left { transform: rotateY(-90deg) translateZ(100px); }
.cube-face.top { transform: rotateX(90deg) translateZ(100px); }
.cube-face.bottom { transform: rotateX(-90deg) translateZ(100px); }

/* 章节样式 */
.section {
    padding: 100px 0;
    position: relative;
    opacity: 0;
    transform: translateY(50px);
    transition: all 0.8s ease;
    overflow: hidden;
    border-bottom: 2px solid rgba(0, 209, 178, 0.2);
    margin-bottom: 2px;
}

.section::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    background: linear-gradient(135deg, rgba(0, 209, 178, 0.05) 0%, rgba(0, 255, 153, 0.05) 100%);
    z-index: -1;
}

.section::after {
    content: '';
    position: absolute;
    bottom: 0;
    left: 50%;
    transform: translateX(-50%);
    width: 80%;
    height: 1px;
    background: linear-gradient(90deg, transparent 0%, #00d1b2 50%, transparent 100%);
    box-shadow: 0 0 10px rgba(0, 209, 178, 0.5);
}

.section:nth-child(even) {
    background: rgba(255, 255, 255, 0.02);
    border-bottom: 2px solid rgba(0, 255, 153, 0.2);
}

.section:nth-child(even)::before {
    background: linear-gradient(135deg, rgba(0, 255, 153, 0.05) 0%, rgba(0, 209, 178, 0.05) 100%);
}

.section:nth-child(even)::after {
    background: linear-gradient(90deg, transparent 0%, #00ff99 50%, transparent 100%);
    box-shadow: 0 0 10px rgba(0, 255, 153, 0.5);
}

.section.animate-in {
    opacity: 1;
    transform: translateY(0);
}

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

.section-number {
    font-family: 'Orbitron', monospace;
    font-size: 6rem;
    font-weight: 900;
    color: rgba(0, 209, 178, 0.1);
    position: absolute;
    top: -40px;
    left: 50%;
    transform: translateX(-50%);
    z-index: -1;
}

.section-title {
    font-family: 'Orbitron', monospace;
    font-size: 2.5rem;
    font-weight: 700;
    color: #00d1b2;
    margin-bottom: 20px;
    text-align: center;
    position: relative;
    padding: 0 20px;
    text-transform: uppercase;
    letter-spacing: 2px;
    background: linear-gradient(135deg, #00d1b2, #00ff99);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
    display: inline-block;
}

.section-title::before,
.section-title::after {
    content: '';
    position: absolute;
    top: 50%;
    width: 60px;
    height: 2px;
    background: linear-gradient(90deg, transparent, #00d1b2);
}

.section-title::before {
    right: 100%;
    margin-right: 20px;
}

.section-title::after {
    left: 100%;
    margin-left: 20px;
    background: linear-gradient(90deg, #00ff99, transparent);
}

.section-line {
    width: 100px;
    height: 3px;
    background: linear-gradient(45deg, #00d1b2, #00ff99);
    margin: 0 auto;
    border-radius: 2px;
}

/* 产品介绍 */
.product-intro-content {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 60px;
    align-items: center;
    position: relative;
}

.product-intro-content::before {
    content: '';
    position: absolute;
    left: 50%;
    top: 0;
    bottom: 0;
    width: 2px;
    background: linear-gradient(180deg, transparent 0%, #00d1b2 20%, #00ff99 80%, transparent 100%);
    transform: translateX(-50%);
    box-shadow: 0 0 10px rgba(0, 209, 178, 0.3);
}

.intro-text h3 {
    font-size: 2rem;
    color: #ffffff;
    margin-bottom: 20px;
}

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

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

.feature-item {
    display: flex;
    align-items: center;
    gap: 15px;
    padding: 15px;
    background: rgba(0, 209, 178, 0.1);
    border-radius: 10px;
    border: 1px solid rgba(0, 209, 178, 0.2);
    transition: all 0.3s ease;
}

.feature-item:hover {
    background: rgba(0, 209, 178, 0.2);
    transform: translateX(10px);
}

.feature-item i {
    font-size: 1.5rem;
    color: #00d1b2;
}

.product-gallery {
    display: flex;
    flex-direction: column;
    gap: 20px;
}

.gallery-main {
    position: relative;
    border-radius: 15px;
    overflow: hidden;
    box-shadow: 0 20px 40px rgba(0, 0, 0, 0.3);
    cursor: pointer;
}

.main-image {
    width: 100%;
    height: 400px;
    object-fit: cover;
    transition: transform 0.3s ease;
}

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

.image-zoom-hint {
    position: absolute;
    top: 15px;
    right: 15px;
    background: rgba(0, 0, 0, 0.7);
    color: #00d1b2;
    padding: 8px 12px;
    border-radius: 20px;
    font-size: 0.9rem;
    display: flex;
    align-items: center;
    gap: 5px;
    opacity: 0;
    transition: opacity 0.3s ease;
    backdrop-filter: blur(10px);
}

.gallery-main:hover .image-zoom-hint {
    opacity: 1;
}

.gallery-thumbs {
    display: flex;
    gap: 10px;
    justify-content: center;
}

.thumb-image {
    width: 80px;
    height: 80px;
    object-fit: cover;
    border-radius: 10px;
    cursor: pointer;
    opacity: 0.6;
    transition: all 0.3s ease;
    border: 2px solid transparent;
}

.thumb-image.active,
.thumb-image:hover {
    opacity: 1;
    border-color: #00d1b2;
    transform: scale(1.1);
}

/* 内容简介 */
.content-summary-wrapper {
    text-align: center;
}

.summary-intro {
    margin-bottom: 50px;
}

.summary-intro h3 {
    font-size: 2rem;
    color: #ffffff;
    margin-bottom: 20px;
}

.summary-intro p {
    font-size: 1.1rem;
    color: #ccc;
    max-width: 800px;
    margin: 0 auto;
    line-height: 1.8;
}

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

.content-grid::before {
    content: '';
    position: absolute;
    top: 50%;
    left: 0;
    right: 0;
    height: 2px;
    background: linear-gradient(90deg, transparent 0%, #00d1b2 25%, #00ff99 75%, transparent 100%);
    transform: translateY(-50%);
    z-index: 0;
}

.content-grid::after {
    content: '';
    position: absolute;
    left: 50%;
    top: 0;
    bottom: 0;
    width: 2px;
    background: linear-gradient(180deg, transparent 0%, #00d1b2 25%, #00ff99 75%, transparent 100%);
    transform: translateX(-50%);
    z-index: 0;
}

.content-card {
    position: relative;
    border-radius: 15px;
    overflow: hidden;
    transition: all 0.3s ease;
    cursor: pointer;
}

.content-card:hover {
    transform: translateY(-10px);
    box-shadow: 0 20px 40px rgba(0, 209, 178, 0.2);
}

.card-image {
    position: relative;
    height: 200px;
    overflow: hidden;
}

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

.content-card:hover .card-image img {
    transform: scale(1.1);
}

.card-overlay {
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    background: linear-gradient(135deg, rgba(0, 255, 255, 0.8), rgba(255, 0, 255, 0.8));
    display: flex;
    flex-direction: column;
    align-items: center;
    justify-content: center;
    opacity: 0;
    transition: all 0.3s ease;
    border-radius: 15px;
    cursor: pointer;
}

.card-overlay .zoom-icon {
    position: absolute;
    top: 10px;
    right: 10px;
    background: rgba(255, 255, 255, 0.9);
    border-radius: 50%;
    width: 30px;
    height: 30px;
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 12px;
    color: #333;
    opacity: 0;
    transform: scale(0.8);
    transition: all 0.3s ease;
}

.card-image:hover .card-overlay .zoom-icon {
    opacity: 1;
    transform: scale(1);
}

.content-card:hover .card-overlay {
    opacity: 1;
}

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

.card-overlay span {
    font-size: 1.1rem;
    font-weight: 600;
    color: #ffffff;
}

/* 内部结构 */
.structure-content {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 60px;
    align-items: center;
    position: relative;
}

.structure-content::before {
    content: '';
    position: absolute;
    right: 50%;
    top: 0;
    bottom: 0;
    width: 2px;
    background: linear-gradient(180deg, transparent 0%, #00d1b2 20%, #00ff99 80%, transparent 100%);
    transform: translateX(50%);
    box-shadow: 0 0 10px rgba(0, 209, 178, 0.3);
}

.structure-info h3 {
    font-size: 2rem;
    color: #ffffff;
    margin-bottom: 20px;
}

.structure-info p {
    font-size: 1.1rem;
    color: #ccc;
    margin-bottom: 30px;
    line-height: 1.8;
}

.tech-specs {
    display: flex;
    flex-direction: column;
    gap: 20px;
}

.spec-item {
    display: flex;
    gap: 20px;
    padding: 20px;
    background: rgba(255, 255, 255, 0.05);
    border-radius: 15px;
    border: 1px solid rgba(0, 209, 178, 0.2);
    transition: all 0.3s ease;
}

.spec-item:hover {
    background: rgba(0, 209, 178, 0.1);
    transform: translateX(10px);
}

.spec-icon {
    width: 60px;
    height: 60px;
    background: linear-gradient(45deg, #00d1b2, #00ff99);
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    flex-shrink: 0;
}

.spec-icon i {
    font-size: 1.5rem;
    color: #000;
}

.spec-content h4 {
    font-size: 1.2rem;
    color: #ffffff;
    margin-bottom: 5px;
}

.spec-content p {
    color: #ccc;
    margin: 0;
}

.structure-gallery {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 20px;
}

.structure-image-container {
    position: relative;
    border-radius: 15px;
    overflow: hidden;
    cursor: pointer;
}

.structure-image {
    width: 100%;
    height: 250px;
    object-fit: cover;
    transition: transform 0.3s ease;
}

.structure-image-container:hover .structure-image {
    transform: scale(1.1);
}

.image-overlay {
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    background: rgba(0, 0, 0, 0.7);
    display: flex;
    align-items: center;
    justify-content: center;
    opacity: 0;
    transition: all 0.3s ease;
    pointer-events: none;
}

.structure-image-container:hover .image-overlay {
    opacity: 1;
}

.image-overlay i {
    font-size: 2rem;
    color: #00d1b2;
}

/* 工厂车间 */
.factory-content {
    display: grid;
    grid-template-columns: 1fr 2fr;
    gap: 60px;
    align-items: start;
    position: relative;
}

.factory-content::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    height: 2px;
    background: linear-gradient(90deg, transparent 0%, #00d1b2 50%, transparent 100%);
    box-shadow: 0 0 10px rgba(0, 209, 178, 0.5);
}

.factory-intro h3 {
    font-size: 2rem;
    color: #ffffff;
    margin-bottom: 20px;
}

.factory-intro p {
    font-size: 1.1rem;
    color: #ccc;
    margin-bottom: 30px;
    line-height: 1.8;
}

.quality-points {
    display: flex;
    flex-direction: column;
    gap: 15px;
}

.quality-item {
    display: flex;
    align-items: center;
    gap: 15px;
    padding: 15px;
    background: rgba(0, 209, 178, 0.1);
    border-radius: 10px;
    border: 1px solid rgba(0, 209, 178, 0.2);
    transition: all 0.3s ease;
}

.quality-item:hover {
    background: rgba(0, 209, 178, 0.2);
    transform: translateX(10px);
}

.quality-item i {
    font-size: 1.5rem;
    color: #00d1b2;
}

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

/* 图片模态框样式 */
.image-modal {
    display: none;
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background: rgba(0, 0, 0, 0.9);
    backdrop-filter: blur(10px);
    z-index: 10000;
    align-items: center;
    justify-content: center;
    opacity: 0;
    transition: opacity 0.3s ease;
}

.image-modal.show {
    opacity: 1;
}

.modal-content {
    position: relative;
    max-width: 90vw;
    max-height: 90vh;
    display: flex;
    flex-direction: column;
    align-items: center;
    animation: modalSlideIn 0.3s ease;
}

@keyframes modalSlideIn {
    from {
        transform: scale(0.8) translateY(50px);
        opacity: 0;
    }
    to {
        transform: scale(1) translateY(0);
        opacity: 1;
    }
}

.modal-close {
    position: absolute;
    top: -50px;
    right: 0;
    font-size: 2rem;
    color: #fff;
    cursor: pointer;
    z-index: 10001;
    width: 40px;
    height: 40px;
    display: flex;
    align-items: center;
    justify-content: center;
    border-radius: 50%;
    background: rgba(255, 255, 255, 0.1);
    transition: all 0.3s ease;
}

.modal-close:hover {
    background: rgba(255, 255, 255, 0.2);
    transform: scale(1.1);
}

#modalImage {
    max-width: 100%;
    max-height: 70vh;
    object-fit: contain;
    border-radius: 10px;
    box-shadow: 0 20px 60px rgba(0, 0, 0, 0.5);
}

.modal-title {
    color: #fff;
    font-size: 1.2rem;
    font-weight: 600;
    margin: 20px 0;
    text-align: center;
    background: linear-gradient(135deg, #00d1b2, #00ff99);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
}

.modal-controls {
    display: flex;
    gap: 15px;
    margin-top: 10px;
}

.modal-btn {
    background: linear-gradient(135deg, #00d1b2, #00ff99);
    border: none;
    color: #fff;
    padding: 12px 20px;
    border-radius: 25px;
    cursor: pointer;
    font-size: 0.9rem;
    font-weight: 600;
    display: flex;
    align-items: center;
    gap: 8px;
    transition: all 0.3s ease;
    box-shadow: 0 5px 15px rgba(0, 209, 178, 0.3);
}

.modal-btn:hover {
    transform: translateY(-2px);
    box-shadow: 0 8px 25px rgba(0, 209, 178, 0.4);
}

.media-item {
    position: relative;
    border-radius: 15px;
    overflow: hidden;
    height: 200px;
}

.media-item img,
.video-container {
    position: relative;
    width: 100%;
    height: 100%;
    border-radius: 15px;
    overflow: hidden;
}

.media-item video {
    width: 100%;
    height: 100%;
    object-fit: cover;
    transition: transform 0.3s ease;
    border-radius: 15px;
}

.media-item:hover img,
.media-item:hover video {
    transform: scale(1.05);
}

.media-overlay {
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    background: linear-gradient(135deg, rgba(0, 0, 0, 0.7) 0%, rgba(0, 209, 178, 0.3) 100%);
    display: flex;
    flex-direction: column;
    align-items: center;
    justify-content: center;
    border-radius: 15px;
    opacity: 1;
    transition: all 0.3s ease;
    cursor: pointer;
    pointer-events: none;
}

.video-overlay {
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    background: linear-gradient(135deg, rgba(0, 0, 0, 0.7) 0%, rgba(0, 209, 178, 0.3) 100%);
    display: flex;
    flex-direction: column;
    align-items: center;
    justify-content: center;
    border-radius: 15px;
    opacity: 1;
    transition: all 0.3s ease;
    cursor: pointer;
}

.video-overlay:hover {
    background: linear-gradient(135deg, rgba(0, 0, 0, 0.8) 0%, rgba(0, 255, 153, 0.4) 100%);
}

.play-button {
    width: 80px;
    height: 80px;
    border: 3px solid #00d1b2;
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    margin-bottom: 15px;
    transition: all 0.3s ease;
    background: rgba(0, 209, 178, 0.1);
    backdrop-filter: blur(10px);
}

.play-button:hover {
    transform: scale(1.1);
    border-color: #00ff99;
    background: rgba(0, 255, 153, 0.2);
    box-shadow: 0 0 30px rgba(0, 209, 178, 0.5);
}

.play-button i {
    font-size: 2rem;
    color: #00d1b2;
    margin-left: 5px;
    text-shadow: 0 0 10px rgba(0, 209, 178, 0.5);
    transition: color 0.3s ease;
}

.play-button:hover i {
    color: #00ff99;
}

.video-title {
    color: #fff;
    font-size: 1.1rem;
    font-weight: 600;
    text-align: center;
    text-shadow: 0 2px 4px rgba(0, 0, 0, 0.5);
    letter-spacing: 1px;
}

.media-item:hover .media-overlay,
.media-item:hover .video-overlay {
    opacity: 1;
}

.media-overlay i {
    font-size: 2rem;
    color: #00d1b2;
}

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

.contact-info h3 {
    font-size: 2rem;
    color: #ffffff;
    margin-bottom: 20px;
}

.contact-info p {
    font-size: 1.1rem;
    color: #ccc;
    margin-bottom: 30px;
    line-height: 1.8;
}

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

.contact-method {
    display: flex;
    align-items: center;
    gap: 15px;
    padding: 15px;
    background: rgba(255, 255, 255, 0.05);
    border-radius: 10px;
    border: 1px solid rgba(0, 209, 178, 0.2);
    transition: all 0.3s ease;
}

.contact-method:hover {
    background: rgba(0, 209, 178, 0.1);
    transform: translateX(10px);
}

.contact-method i {
    font-size: 1.5rem;
    color: #00d1b2;
}

.contact-form {
    background: rgba(255, 255, 255, 0.05);
    padding: 40px;
    border-radius: 20px;
    border: 1px solid rgba(0, 209, 178, 0.2);
}

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

.form-group input,
.form-group textarea {
    width: 100%;
    padding: 15px;
    background: rgba(255, 255, 255, 0.1);
    border: 1px solid rgba(0, 209, 178, 0.3);
    border-radius: 10px;
    color: #ffffff;
    font-size: 1rem;
    transition: all 0.3s ease;
}

.form-group input:focus,
.form-group textarea:focus {
    outline: none;
    border-color: #00d1b2;
    background: rgba(255, 255, 255, 0.15);
    box-shadow: 0 0 20px rgba(0, 209, 178, 0.2);
}

.form-group input::placeholder,
.form-group textarea::placeholder {
    color: #888;
}

/* 页脚 */
.footer {
    background: rgba(10, 10, 10, 0.95);
    border-top: 1px solid rgba(0, 209, 178, 0.2);
    padding: 60px 0 20px;
}

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

.footer-brand {
    display: flex;
    flex-direction: column;
    gap: 20px;
}

.footer-logo {
    display: flex;
    align-items: center;
    gap: 10px;
    font-family: 'Orbitron', monospace;
    font-weight: 700;
    font-size: 1.5rem;
    color: #00d1b2;
}

.footer-logo i {
    font-size: 2rem;
    background: linear-gradient(45deg, #00d1b2, #00ff99);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
}

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

.footer-links {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: 40px;
}

.footer-section h4 {
    color: #ffffff;
    font-size: 1.2rem;
    margin-bottom: 20px;
    font-weight: 600;
}

.footer-section a {
    display: block;
    color: #ccc;
    text-decoration: none;
    margin-bottom: 10px;
    transition: all 0.3s ease;
}

.footer-section a:hover {
    color: #00d1b2;
    transform: translateX(5px);
}

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

.social-links a {
    width: 40px;
    height: 40px;
    background: rgba(0, 209, 178, 0.1);
    border: 1px solid rgba(0, 209, 178, 0.3);
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    transition: all 0.3s ease;
}

.social-links a:hover {
    background: #00d1b2;
    transform: translateY(-3px);
}

.social-links a:hover i {
    color: #000;
}

.social-links i {
    font-size: 1.2rem;
    color: #00d1b2;
    transition: color 0.3s ease;
}

.footer-bottom {
    text-align: center;
    padding-top: 20px;
    border-top: 1px solid rgba(0, 209, 178, 0.2);
    color: #888;
}

.footer-bottom a {
    color: #00d1b2;
    text-decoration: none;
}

.footer-bottom a:hover {
    text-decoration: underline;
}

/* 响应式设计 */
@media (max-width: 768px) {
    .nav-menu {
        position: fixed;
        top: 70px;
        left: -100%;
        width: 100%;
        height: calc(100vh - 70px);
        background: rgba(10, 10, 10, 0.98);
        flex-direction: column;
        justify-content: center;
        align-items: center;
        gap: 40px;
        transition: left 0.3s ease;
    }

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

    .nav-toggle {
        display: flex;
    }

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

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

    .nav-toggle.active span:nth-child(3) {
        transform: rotate(-45deg) translate(7px, -6px);
    }

    .hero {
        flex-direction: column;
        text-align: center;
        padding: 120px 0 50px;
    }

    .hero-visual {
        margin-top: 40px;
    }

    .floating-cube {
        width: 150px;
        height: 150px;
    }

    .cube-face {
        width: 150px;
        height: 150px;
    }

    .cube-face.front { transform: translateZ(75px); }
    .cube-face.back { transform: rotateY(180deg) translateZ(75px); }
    .cube-face.right { transform: rotateY(90deg) translateZ(75px); }
    .cube-face.left { transform: rotateY(-90deg) translateZ(75px); }
    .cube-face.top { transform: rotateX(90deg) translateZ(75px); }
    .cube-face.bottom { transform: rotateX(-90deg) translateZ(75px); }

    .title-main {
        font-size: 2.5rem;
    }

    .title-sub {
        font-size: 1.5rem;
    }

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

    .product-intro-content,
    .structure-content,
    .factory-content,
    .contact-content {
        grid-template-columns: 1fr;
        gap: 40px;
    }

    .content-grid {
        grid-template-columns: repeat(auto-fit, minmax(200px, 1fr));
        gap: 20px;
    }

    .structure-gallery,
    .media-grid {
        grid-template-columns: 1fr;
    }

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

    .footer-links {
        grid-template-columns: 1fr;
        gap: 30px;
    }

    .section {
        padding: 60px 0;
    }

    .section-number {
        font-size: 4rem;
    }

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

    .modal-content {
        max-width: 95vw;
        max-height: 95vh;
        padding: 0 10px;
    }

    #modalImage {
        max-height: 60vh;
    }

    .modal-controls {
        flex-direction: column;
        width: 100%;
    }

    .modal-btn {
        justify-content: center;
        width: 100%;
    }
}

@media (max-width: 480px) {
    .container {
        padding: 0 15px;
    }

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

    .title-sub {
        font-size: 1.2rem;
    }

    .hero-buttons {
        flex-direction: column;
        align-items: center;
    }

    .btn {
        width: 100%;
        max-width: 250px;
        justify-content: center;
    }

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

    .contact-form {
        padding: 20px;
    }
}