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

:root {
    --primary-color: #1a1a1a;
    --secondary-color: #2c5f2d;
    --accent-color: #4a9d4f;
    --sky-blue: #00bfff;
    --text-dark: #1a1a1a;
    --text-light: #666;
    --bg-light: #f8f8f8;
    --white: #ffffff;
    --border-color: #e0e0e0;
}

body {
    font-family: -apple-system, BlinkMacSystemFont, 'Segoe UI', 'PingFang SC', 'Hiragino Sans GB', 'Microsoft YaHei', sans-serif;
    line-height: 1.6;
    color: var(--text-dark);
    overflow-x: hidden;
}

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

/* 1. 头部导航 */
.header {
    position: fixed;
    top: 0;
    left: 0;
    right: 0;
    background: rgba(255, 255, 255, 0.05);
    backdrop-filter: blur(8px);
    -webkit-backdrop-filter: blur(8px);
    border-bottom: 1px solid rgba(255, 255, 255, 0.08);
    z-index: 1000;
    transition: all 0.3s ease;
}

.header .container {
    display: flex;
    justify-content: space-between;
    align-items: center;
    padding: 5px 20px;
}

.logo a {
    display: block;
    line-height: 0;
}

.logo-img {
    height: 58px;
    width: auto;
    display: block;
    filter: drop-shadow(0 2px 4px rgba(0, 0, 0, 0.3)) brightness(1.75);
}

.header-right {
    display: flex;
    align-items: center;
    gap: 20px;
}

.phone {
    display: flex;
    align-items: center;
    gap: 5px;
    color: var(--white);
    font-size: 12px;
    text-shadow: 0 1px 3px rgba(0, 0, 0, 0.3);
}

.phone-icon {
    font-size: 13px;
}

.phone-number {
    font-weight: 500;
}

.lang-switch {
    display: flex;
    align-items: center;
    gap: 5px;
}

.lang-btn {
    background: none;
    border: none;
    color: rgba(255, 255, 255, 0.7);
    font-size: 12px;
    font-weight: 500;
    cursor: pointer;
    padding: 3px 6px;
    transition: all 0.3s ease;
    text-shadow: 0 1px 3px rgba(0, 0, 0, 0.3);
}

.lang-btn.active {
    color: var(--white);
    font-weight: 600;
    text-shadow: 0 0 8px rgba(0, 191, 255, 0.8), 0 1px 3px rgba(0, 0, 0, 0.3);
}

.lang-btn:hover {
    color: var(--white);
    text-shadow: 0 0 8px rgba(0, 191, 255, 0.8), 0 1px 3px rgba(0, 0, 0, 0.3);
}

.lang-divider {
    color: rgba(255, 255, 255, 0.5);
    font-size: 12px;
}

.nav {
    display: flex;
    gap: 28px;
}

.nav a {
    text-decoration: none;
    color: var(--white);
    font-size: 12px;
    transition: all 0.3s ease;
    white-space: nowrap;
    text-shadow: 0 1px 3px rgba(0, 0, 0, 0.3);
}

.nav a:hover {
    color: var(--sky-blue);
    text-shadow: 0 0 8px rgba(0, 191, 255, 0.6);
}

.menu-toggle {
    display: none;
    flex-direction: column;
    gap: 5px;
    background: none;
    border: none;
    cursor: pointer;
}

.menu-toggle span {
    width: 25px;
    height: 2px;
    background: var(--white);
    transition: all 0.3s ease;
}

/* 2. 英雄横幅 */
.hero {
    min-height: 100vh;
    display: flex;
    align-items: center;
    justify-content: center;
    position: relative;
    padding-top: 68px;
    overflow: hidden;
}

.hero-video {
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    object-fit: cover;
    z-index: 0;
}

.hero-overlay {
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background: rgba(0, 0, 0, 0.3);
    z-index: 1;
}

.hero::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    background: 
        radial-gradient(circle at 20% 50%, rgba(0, 191, 255, 0.15) 0%, transparent 50%),
        radial-gradient(circle at 80% 80%, rgba(74, 157, 79, 0.15) 0%, transparent 50%);
    animation: gradientShift 15s ease infinite;
    z-index: 1;
}

@keyframes gradientShift {
    0%, 100% {
        opacity: 1;
        transform: scale(1);
    }
    50% {
        opacity: 0.8;
        transform: scale(1.1);
    }
}

.hero-content {
    text-align: center;
    padding: 0 20px;
    position: relative;
    z-index: 2;
    animation: fadeInUp 1s ease-out;
}

@keyframes fadeInUp {
    from {
        opacity: 0;
        transform: translateY(30px);
    }
    to {
        opacity: 1;
        transform: translateY(0);
    }
}

.hero-title {
    font-size: 48px;
    font-weight: 700;
    letter-spacing: 1px;
    margin-bottom: 30px;
    line-height: 1.3;
    color: var(--white);
    text-shadow: 0 2px 10px rgba(0, 0, 0, 0.3);
    animation: fadeInUp 1s ease-out 0.2s both;
    position: relative;
}

.hero-title::after {
    content: '';
    position: absolute;
    bottom: -10px;
    left: 50%;
    transform: translateX(-50%);
    width: 100px;
    height: 3px;
    background: linear-gradient(90deg, transparent, var(--sky-blue), transparent);
    animation: expandWidth 1s ease-out 0.8s both;
}

@keyframes expandWidth {
    from {
        width: 0;
    }
    to {
        width: 100px;
    }
}

.hero-subtitle {
    font-size: 20px;
    color: var(--white);
    margin-bottom: 40px;
    line-height: 1.6;
    max-width: 900px;
    margin-left: auto;
    margin-right: auto;
    animation: fadeInUp 1s ease-out 0.4s both;
    text-shadow: 0 2px 8px rgba(0, 0, 0, 0.3);
}

.hero-buttons {
    display: flex;
    gap: 20px;
    justify-content: center;
    flex-wrap: wrap;
    animation: fadeInUp 1s ease-out 0.6s both;
}

.btn {
    display: inline-block;
    padding: 14px 40px;
    font-size: 16px;
    font-weight: 500;
    text-decoration: none;
    border-radius: 50px;
    transition: all 0.4s cubic-bezier(0.4, 0, 0.2, 1);
    cursor: pointer;
    position: relative;
    overflow: hidden;
    backdrop-filter: blur(10px);
    -webkit-backdrop-filter: blur(10px);
}

.btn::before {
    content: '';
    position: absolute;
    top: 50%;
    left: 50%;
    width: 0;
    height: 0;
    border-radius: 50%;
    background: rgba(255, 255, 255, 0.3);
    transform: translate(-50%, -50%);
    transition: width 0.6s, height 0.6s;
}

.btn:hover::before {
    width: 300px;
    height: 300px;
}

.btn-primary {
    background: rgba(0, 191, 255, 0.3);
    color: var(--white);
    border: 2px solid rgba(255, 255, 255, 0.3);
    box-shadow: 0 4px 15px rgba(0, 191, 255, 0.3);
}

.btn-primary:hover {
    background: rgba(0, 191, 255, 0.5);
    border-color: rgba(255, 255, 255, 0.5);
    box-shadow: 0 8px 25px rgba(0, 191, 255, 0.5);
    transform: translateY(-3px);
}

.btn-secondary {
    background: rgba(255, 255, 255, 0.2);
    color: var(--white);
    border: 2px solid rgba(255, 255, 255, 0.4);
    box-shadow: 0 4px 15px rgba(255, 255, 255, 0.2);
}

.btn-secondary:hover {
    background: rgba(255, 255, 255, 0.3);
    border-color: rgba(255, 255, 255, 0.6);
    box-shadow: 0 8px 25px rgba(255, 255, 255, 0.3);
    transform: translateY(-3px);
}

/* 3. 公司介绍 */
.about {
    padding: 120px 0;
    background: url('image/aboutusbg.png') center center / cover no-repeat;
    position: relative;
    overflow: hidden;
}

.about .container {
    position: relative;
    z-index: 1;
}

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

.about-text {
    opacity: 0;
    transform: translateX(-50px);
}

.about-grid.active .about-text {
    animation: slideInLeft 1s ease-out forwards;
}

@keyframes slideInLeft {
    to {
        opacity: 1;
        transform: translateX(0);
    }
}

.section-header-left {
    margin-bottom: 30px;
}

.section-header-left h2 {
    font-size: 36px;
    font-weight: 600;
    color: var(--primary-color);
    position: relative;
    display: inline-block;
}

.section-header-left h2::after {
    content: '';
    position: absolute;
    bottom: -10px;
    left: 0;
    width: 60px;
    height: 3px;
    background: linear-gradient(90deg, var(--sky-blue), transparent);
}

.about-text p {
    font-size: 16px;
    line-height: 2;
    color: var(--text-dark);
    text-align: justify;
}

.about-image {
    opacity: 0;
    transform: translateX(50px);
    position: relative;
}

.about-image::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    background: linear-gradient(135deg, rgba(0, 191, 255, 0.1) 0%, rgba(74, 157, 79, 0.1) 100%);
    border-radius: 12px;
    z-index: 1;
    pointer-events: none;
}

.about-grid.active .about-image {
    animation: slideInRight 1s ease-out 0.3s forwards;
}

@keyframes slideInRight {
    to {
        opacity: 1;
        transform: translateX(0);
    }
}

.about-product-image {
    width: 100%;
    height: auto;
    border-radius: 12px;
    box-shadow: 0 10px 40px rgba(0, 0, 0, 0.15);
    opacity: 0.75;
    transition: opacity 0.3s ease, transform 0.3s ease;
}

.about-image:hover .about-product-image {
    opacity: 1;
    transform: scale(1.02);
}

/* 4. 核心优势 */
.advantages {
    padding: 138px 0;
    background: url('image/advbg.png') center center / cover no-repeat;
    position: relative;
    overflow: hidden;
}

.advantages .container {
    position: relative;
    z-index: 1;
}

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

.section-header h2 {
    font-size: 36px;
    font-weight: 600;
    color: var(--primary-color);
    position: relative;
    display: inline-block;
}

.section-header h2::after {
    content: '';
    position: absolute;
    bottom: -10px;
    left: 50%;
    transform: translateX(-50%);
    width: 60px;
    height: 3px;
    background: linear-gradient(90deg, transparent, var(--sky-blue), transparent);
}

.advantages-grid {
    display: grid;
    grid-template-columns: repeat(5, 1fr);
    gap: 20px;
    max-width: 1400px;
    margin: 0 auto;
}

.advantage-item {
    background: rgba(255, 255, 255, 0.05);
    backdrop-filter: blur(3px);
    -webkit-backdrop-filter: blur(3px);
    padding: 25px 20px;
    border-radius: 12px;
    transition: all 0.4s cubic-bezier(0.4, 0, 0.2, 1);
    position: relative;
    overflow: hidden;
    opacity: 0;
    transform: translateY(30px);
    border: 1px solid rgba(255, 255, 255, 0.15);
}

.advantages-grid.active .advantage-item {
    animation: fadeInUp 0.6s ease-out forwards;
}

.advantages-grid.active .advantage-item:nth-child(1) {
    animation-delay: 0s;
}

.advantages-grid.active .advantage-item:nth-child(2) {
    animation-delay: 0.1s;
}

.advantages-grid.active .advantage-item:nth-child(3) {
    animation-delay: 0.2s;
}

.advantages-grid.active .advantage-item:nth-child(4) {
    animation-delay: 0.3s;
}

.advantages-grid.active .advantage-item:nth-child(5) {
    animation-delay: 0.4s;
}

.advantage-item::before {
    content: '';
    position: absolute;
    inset: 0;
    border-radius: 12px;
    padding: 2px;
    background: linear-gradient(45deg, 
        #00bfff 0%, 
        #7df9ff 25%, 
        #00bfff 50%, 
        #7df9ff 75%, 
        #00bfff 100%);
    -webkit-mask: linear-gradient(#fff 0 0) content-box, linear-gradient(#fff 0 0);
    -webkit-mask-composite: xor;
    mask-composite: exclude;
    opacity: 0;
    transition: opacity 0.4s ease;
    animation: electricBorder 3s linear infinite;
    background-size: 200% 200%;
}

@keyframes electricBorder {
    0% {
        background-position: 0% 50%;
    }
    50% {
        background-position: 100% 50%;
    }
    100% {
        background-position: 0% 50%;
    }
}

.advantage-item::after {
    content: '';
    position: absolute;
    inset: -2px;
    border-radius: 12px;
    background: linear-gradient(45deg, 
        rgba(0, 191, 255, 0.4) 0%, 
        rgba(125, 249, 255, 0.4) 50%, 
        rgba(0, 191, 255, 0.4) 100%);
    filter: blur(20px);
    opacity: 0;
    transition: opacity 0.4s ease;
    z-index: -1;
    animation: electricBorder 3s linear infinite;
    background-size: 200% 200%;
}

.advantage-item:hover {
    transform: translateY(-8px);
    background: rgba(255, 255, 255, 0.08);
    box-shadow: 0 20px 50px rgba(0, 191, 255, 0.3);
}

.advantage-item:hover::before,
.advantage-item:hover::after {
    opacity: 1;
}

.advantage-item h3 {
    font-size: 16px;
    font-weight: 600;
    color: var(--primary-color);
    margin-bottom: 12px;
}

.advantage-item p {
    font-size: 13px;
    color: var(--text-dark);
    line-height: 1.6;
}

/* 5. 核心产品 */
.products {
    min-height: 100vh;
    padding: 80px 0;
    position: relative;
    overflow: hidden;
    display: flex;
    align-items: center;
}

.products-video {
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    object-fit: cover;
    z-index: 0;
}

.products .container {
    position: relative;
    z-index: 1;
}

.products .section-header h2 {
    color: var(--primary-color);
}

.products .section-header h2::after {
    background: linear-gradient(90deg, transparent, var(--sky-blue), transparent);
}

.product-tabs {
    display: flex;
    justify-content: center;
    gap: 15px;
    margin-bottom: 60px;
    flex-wrap: wrap;
}

.tab-btn {
    padding: 10px 28px;
    background: rgba(255, 255, 255, 0.1);
    backdrop-filter: blur(10px);
    -webkit-backdrop-filter: blur(10px);
    border: 1px solid rgba(255, 255, 255, 0.2);
    border-radius: 50px;
    font-size: 14px;
    font-weight: 500;
    color: var(--white);
    cursor: pointer;
    transition: all 0.4s cubic-bezier(0.4, 0, 0.2, 1);
    position: relative;
    overflow: hidden;
    text-shadow: 0 2px 8px rgba(0, 0, 0, 0.5);
}

.tab-btn::before {
    content: '';
    position: absolute;
    top: 50%;
    left: 50%;
    width: 0;
    height: 0;
    border-radius: 50%;
    background: rgba(255, 255, 255, 0.3);
    transform: translate(-50%, -50%);
    transition: width 0.6s, height 0.6s;
}

.tab-btn:hover::before {
    width: 300px;
    height: 300px;
}

.tab-btn:hover {
    background: rgba(255, 255, 255, 0.15);
    transform: translateY(-2px);
    box-shadow: 0 4px 12px rgba(255, 255, 255, 0.2);
}

.tab-btn.active {
    background: linear-gradient(135deg, rgba(0, 191, 255, 0.3) 0%, rgba(125, 249, 255, 0.3) 100%);
    border-color: rgba(255, 255, 255, 0.3);
    color: var(--white);
    box-shadow: 0 4px 15px rgba(0, 191, 255, 0.3);
}

.product-category {
    display: none;
    min-height: 600px;
}

.product-category.active {
    display: block;
}

.products-grid {
    display: grid;
    grid-template-columns: repeat(2, 1fr);
    gap: 30px;
    max-width: 900px;
    margin: 0 auto;
}

.products-grid-3col {
    grid-template-columns: repeat(3, 1fr);
    max-width: 1200px;
}

.products-grid-1col {
    grid-template-columns: 1fr;
    max-width: 450px;
}

.product-card {
    background: rgba(255, 255, 255, 0.05);
    backdrop-filter: blur(5px);
    -webkit-backdrop-filter: blur(5px);
    border: 1px solid rgba(255, 255, 255, 0.2);
    border-radius: 20px;
    padding: 0;
    transition: all 0.4s cubic-bezier(0.4, 0, 0.2, 1);
    position: relative;
    overflow: hidden;
    box-shadow: 0 8px 32px rgba(0, 0, 0, 0.1);
    display: flex;
    flex-direction: column;
    height: 100%;
    min-height: 480px;
}

.product-card::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    height: 3px;
    background: linear-gradient(90deg, var(--sky-blue) 0%, #7df9ff 100%);
    opacity: 0;
    transition: opacity 0.3s ease;
}

.product-card:hover::before {
    opacity: 1;
}

.product-card:hover {
    transform: translateY(-8px);
    box-shadow: 0 16px 48px rgba(0, 191, 255, 0.15);
    background: rgba(255, 255, 255, 0.3);
}

.product-image-wrapper {
    padding: 20px 20px 0;
}

.product-image {
    width: 100%;
    height: 220px;
    background: linear-gradient(135deg, #f5f5f5 0%, #e3f2fd 100%);
    background-size: contain;
    background-position: center;
    background-repeat: no-repeat;
    border-radius: 16px;
    position: relative;
    overflow: hidden;
}

.product-image::after {
    content: '';
    position: absolute;
    inset: 0;
    background: linear-gradient(135deg, rgba(255, 255, 255, 0.5) 0%, rgba(0, 191, 255, 0.05) 100%);
}

.product-card-body {
    padding: 20px 25px 25px;
}

.product-name {
    font-size: 18px;
    font-weight: 600;
    color: var(--primary-color);
    margin-bottom: 6px;
    letter-spacing: -0.3px;
}

.product-subtitle {
    font-size: 13px;
    color: var(--text-light);
    margin-bottom: 16px;
    font-weight: 400;
}

.product-features {
    display: flex;
    flex-wrap: wrap;
    gap: 6px;
    margin-bottom: 20px;
}

.feature-tag {
    padding: 5px 11px;
    background: rgba(255, 255, 255, 0.6);
    border: 1px solid rgba(0, 191, 255, 0.2);
    border-radius: 20px;
    font-size: 11px;
    color: var(--text-dark);
    white-space: nowrap;
    font-weight: 500;
    transition: all 0.3s ease;
}

.product-card:hover .feature-tag {
    background: rgba(255, 255, 255, 0.8);
    border-color: rgba(0, 191, 255, 0.3);
}

.btn-details {
    width: 100%;
    padding: 11px;
    background: rgba(255, 255, 255, 0.1);
    backdrop-filter: blur(10px);
    -webkit-backdrop-filter: blur(10px);
    border: 1px solid rgba(255, 255, 255, 0.2);
    color: var(--white);
    border-radius: 12px;
    font-size: 13px;
    font-weight: 500;
    cursor: pointer;
    transition: all 0.4s cubic-bezier(0.4, 0, 0.2, 1);
    letter-spacing: 0.3px;
    position: relative;
    overflow: hidden;
    text-shadow: 0 2px 8px rgba(0, 0, 0, 0.5);
}

.btn-details::before {
    content: '';
    position: absolute;
    top: 50%;
    left: 50%;
    width: 0;
    height: 0;
    border-radius: 50%;
    background: rgba(255, 255, 255, 0.3);
    transform: translate(-50%, -50%);
    transition: width 0.6s, height 0.6s;
}

.btn-details:hover::before {
    width: 300px;
    height: 300px;
}

.btn-details:hover {
    background: rgba(255, 255, 255, 0.15);
    transform: translateY(-2px);
    box-shadow: 0 6px 20px rgba(255, 255, 255, 0.2);
}

/* 隐藏卡片中的参数表，仅用于弹窗 */
.product-card .product-specs {
    display: none !important;
}

.product-description {
    margin-top: 16px;
    padding: 14px;
    background: rgba(255, 255, 255, 0.5);
    border-radius: 12px;
    border-left: 3px solid var(--sky-blue);
}

.product-description p {
    font-size: 13px;
    line-height: 1.7;
    color: var(--text-dark);
}

/* 弹窗样式 */
.modal-overlay {
    display: none;
    position: fixed;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    background: rgba(0, 0, 0, 0.65);
    z-index: 2000;
    backdrop-filter: blur(8px);
    -webkit-backdrop-filter: blur(8px);
    animation: fadeIn 0.3s ease;
}

.modal-overlay.active {
    display: flex;
    justify-content: center;
    align-items: center;
    padding: 20px;
}

@keyframes fadeIn {
    from {
        opacity: 0;
    }
    to {
        opacity: 1;
    }
}

.modal-content {
    background: var(--white);
    border-radius: 20px;
    max-width: 900px;
    width: 100%;
    max-height: 90vh;
    overflow-y: auto;
    position: relative;
    animation: slideUp 0.4s cubic-bezier(0.4, 0, 0.2, 1);
    box-shadow: 0 20px 60px rgba(0, 0, 0, 0.3);
}

@keyframes slideUp {
    from {
        opacity: 0;
        transform: translateY(50px) scale(0.95);
    }
    to {
        opacity: 1;
        transform: translateY(0) scale(1);
    }
}

.modal-header {
    padding: 28px 35px;
    border-bottom: 1px solid rgba(0, 191, 255, 0.15);
    background: linear-gradient(135deg, #ffffff 0%, #e3f2fd 100%);
    border-radius: 20px 20px 0 0;
    position: sticky;
    top: 0;
    z-index: 10;
}

.modal-title {
    font-size: 24px;
    font-weight: 600;
    color: var(--primary-color);
    margin: 0;
    letter-spacing: -0.5px;
}

.modal-subtitle {
    font-size: 14px;
    color: var(--text-light);
    margin-top: 6px;
}

.modal-close {
    position: absolute;
    top: 24px;
    right: 24px;
    width: 38px;
    height: 38px;
    border: none;
    background: var(--white);
    border-radius: 50%;
    cursor: pointer;
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 24px;
    color: var(--text-dark);
    transition: all 0.3s ease;
    box-shadow: 0 2px 10px rgba(0, 0, 0, 0.1);
}

.modal-close:hover {
    background: var(--sky-blue);
    color: var(--white);
    transform: rotate(90deg);
}

.modal-body {
    padding: 35px;
}

.modal-specs-table {
    width: 100%;
    border-collapse: collapse;
    font-size: 14px;
    margin-top: 20px;
}

.modal-specs-table thead {
    background: linear-gradient(135deg, #ffffff 0%, #e3f2fd 100%);
}

.modal-specs-table th,
.modal-specs-table td {
    padding: 14px 16px;
    text-align: center;
    border: 1px solid rgba(0, 191, 255, 0.15);
}

.modal-specs-table th {
    font-weight: 600;
    color: var(--primary-color);
    font-size: 13px;
}

.modal-specs-table td {
    color: var(--text-dark);
}

.modal-specs-table tbody tr {
    transition: background 0.2s ease;
}

.modal-specs-table tbody tr:hover {
    background: rgba(227, 242, 253, 0.3);
}

/* 6. 品牌愿景 */
.vision {
    padding: 120px 0;
    background: linear-gradient(135deg, var(--secondary-color) 0%, var(--accent-color) 100%);
    color: var(--white);
    overflow: hidden;
    position: relative;
}

.vision-bg-video {
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    object-fit: cover;
    z-index: 0;
}

.vision .container {
    position: relative;
    z-index: 1;
}

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

.vision-text {
    opacity: 0;
    transform: translateX(-50px);
    text-align: center;
}

.vision-grid.active .vision-text {
    animation: slideInLeft 1s ease-out forwards;
}

.vision-text h2 {
    font-size: 36px;
    font-weight: 600;
    color: var(--white);
    margin-bottom: 50px;
    text-align: center;
}

.vision-text h2::after {
    display: none;
}

.vision-section {
    margin-bottom: 40px;
}

.vision-section h3 {
    font-size: 24px;
    font-weight: 500;
    color: var(--white);
    margin-bottom: 20px;
}

.vision-section p {
    font-size: 18px;
    line-height: 2;
    color: var(--white);
}

.vision-divider {
    width: 60px;
    height: 2px;
    background: var(--white);
    margin: 40px auto;
    opacity: 0.6;
}

.vision-image {
    opacity: 0;
    transform: translateX(50px);
    display: flex;
    justify-content: center;
    align-items: center;
}

.vision-grid.active .vision-image {
    animation: slideInRight 1s ease-out 0.3s forwards;
}

.vision-video {
    width: 100%;
    max-width: 500px;
    height: auto;
    border-radius: 20px;
    filter: drop-shadow(0 10px 30px rgba(0, 0, 0, 0.3));
    object-fit: cover;
}

@keyframes float {
    0%, 100% {
        transform: translateY(0);
    }
    50% {
        transform: translateY(-20px);
    }
}

/* 7. 联系我们 */
.contact {
    padding: 187px 0;
    background: var(--white);
    position: relative;
    overflow: hidden;
}

.contact-bg-video {
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    object-fit: cover;
    z-index: 0;
}

.contact .container {
    position: relative;
    z-index: 1;
}

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

.vision-content {
    color: var(--white);
    text-align: center;
    opacity: 0;
    transform: translateY(-50px);
    transition: all 1s ease-out;
}

.contact-combined-grid.active .vision-content {
    opacity: 1;
    transform: translateY(0);
}

.vision-content h2 {
    font-size: 36px;
    font-weight: 700;
    color: var(--white);
    margin-bottom: 50px;
    text-align: center;
    text-shadow: 0 3px 10px rgba(0, 0, 0, 0.6);
}

.vision-content h3 {
    font-size: 24px;
    font-weight: 600;
    color: var(--white);
    margin-bottom: 20px;
    text-shadow: 0 3px 10px rgba(0, 0, 0, 0.6);
}

.vision-content p {
    font-size: 18px;
    line-height: 2;
    color: var(--white);
    font-weight: 500;
    text-shadow: 0 3px 10px rgba(0, 0, 0, 0.6);
}

.vision-divider {
    width: 60px;
    height: 2px;
    background: var(--white);
    margin: 40px auto;
    opacity: 0.6;
}

.contact-card {
    background: rgba(255, 255, 255, 0.05);
    backdrop-filter: blur(5px);
    -webkit-backdrop-filter: blur(5px);
    border: 1px solid rgba(255, 255, 255, 0.2);
    border-radius: 20px;
    padding: 40px;
    box-shadow: 0 8px 32px rgba(0, 0, 0, 0.3);
    opacity: 0;
    transform: translateX(100px);
    transition: all 1s ease-out 0.3s;
}

.contact-combined-grid.active .contact-card {
    opacity: 1;
    transform: translateX(0);
}

.contact-card h2 {
    font-size: 32px;
    font-weight: 700;
    color: var(--white);
    margin-bottom: 40px;
    text-align: center;
    text-shadow: 0 3px 10px rgba(0, 0, 0, 0.5);
}

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

.contact-info {
    display: flex;
    flex-direction: column;
    gap: 30px;
}

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

.info-item h4 {
    font-size: 18px;
    font-weight: 700;
    color: var(--white);
    margin-bottom: 10px;
    text-shadow: 0 3px 10px rgba(0, 0, 0, 0.6);
}

.info-item p {
    font-size: 16px;
    color: var(--white);
    font-weight: 500;
    text-shadow: 0 3px 10px rgba(0, 0, 0, 0.6);
}
    color: var(--text-light);
    margin-bottom: 5px;
}

/* 8. 页脚 */
.footer {
    background: linear-gradient(135deg, #2c5f2d 0%, #4a9d4f 100%) !important;
    color: #ffffff !important;
    padding: 25px 0 15px;
    display: block !important;
    width: 100%;
}

.footer-content {
    text-align: center;
    display: block !important;
}

.footer-logo {
    font-size: 20px;
    font-weight: 400;
    color: #ffffff !important;
    margin-bottom: 12px;
    display: block;
}

.footer-desc {
    font-size: 13px;
    color: rgba(255, 255, 255, 0.7) !important;
    line-height: 1.4;
    margin-bottom: 12px;
    display: block;
}

.copyright {
    font-size: 13px;
    color: rgba(255, 255, 255, 0.6) !important;
    margin-bottom: 3px;
    display: block;
}

.copyright-notice {
    font-size: 12px;
    color: rgba(255, 255, 255, 0.5) !important;
    margin-top: 3px;
    display: block;
}

/* 响应式设计 */
@media (max-width: 968px) {
    .header-right {
        display: none;
    }
}

@media (max-width: 768px) {
    .nav {
        display: none;
        position: absolute;
        top: 68px;
        left: 0;
        right: 0;
        background: rgba(0, 0, 0, 0.3);
        backdrop-filter: blur(20px);
        -webkit-backdrop-filter: blur(20px);
        flex-direction: column;
        gap: 0;
        border-bottom: 1px solid rgba(255, 255, 255, 0.1);
    }

    .nav.active {
        display: flex;
    }

    .nav a {
        padding: 15px 20px;
        border-bottom: 1px solid rgba(255, 255, 255, 0.1);
        color: var(--white);
        text-align: center;
    }

    .menu-toggle {
        display: flex;
    }

    .menu-toggle.active span:nth-child(1) {
        transform: rotate(45deg) translate(7px, 7px);
    }

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

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

    .hero-title {
        font-size: 28px;
    }

    .hero-title::after {
        width: 60px;
    }

    @keyframes expandWidth {
        from {
            width: 0;
        }
        to {
            width: 60px;
        }
    }

    .hero-subtitle {
        font-size: 16px;
    }

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

    .btn {
        width: 100%;
        max-width: 280px;
        text-align: center;
    }

    .section-header h2 {
        font-size: 28px;
    }

    .advantages {
        padding: 92px 0;
    }

    .advantages-grid {
        grid-template-columns: 1fr;
        gap: 15px;
    }

    .advantage-item {
        padding: 25px 20px;
    }

    .advantage-item h3 {
        font-size: 16px;
    }

    .advantage-item p {
        font-size: 13px;
    }

    .about {
        padding: 80px 0;
    }

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

    .about-text {
        opacity: 0;
        transform: translateY(30px);
    }

    .about-grid.active .about-text {
        animation: fadeInUp 0.8s ease-out forwards;
    }

    .about-image {
        opacity: 0;
        transform: translateY(30px);
    }

    .about-grid.active .about-image {
        animation: fadeInUp 0.8s ease-out 0.2s forwards;
    }

    .section-header-left h2 {
        font-size: 28px;
    }

    .about-text p {
        font-size: 15px;
        line-height: 1.8;
    }

    .about-product-image {
        max-height: 300px;
        object-fit: contain;
    }

    .about-image:hover .about-product-image {
        transform: none;
    }

    .advantages-grid,
    .products-grid {
        grid-template-columns: 1fr;
    }

    .product-tabs {
        flex-direction: column;
        gap: 10px;
    }

    .tab-btn {
        width: 100%;
    }

    .modal-content {
        margin: 10px;
        max-height: 95vh;
    }

    .modal-header {
        padding: 20px;
    }

    .modal-title {
        font-size: 20px;
        padding-right: 40px;
    }

    .modal-body {
        padding: 20px;
    }

    .modal-specs-table {
        font-size: 12px;
        display: block;
        overflow-x: auto;
    }

    .modal-specs-table th,
    .modal-specs-table td {
        padding: 8px 10px;
        white-space: nowrap;
    }

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

    .vision-text {
        opacity: 0;
        transform: translateY(30px);
    }

    .vision-grid.active .vision-text {
        animation: fadeInUp 0.8s ease-out forwards;
    }

    .vision-image {
        opacity: 0;
        transform: translateY(30px);
    }

    .vision-grid.active .vision-image {
        animation: fadeInUp 0.8s ease-out 0.2s forwards;
    }

    .vision-text h2 {
        font-size: 28px;
        margin-bottom: 40px;
    }

    .vision-section h3 {
        font-size: 20px;
        margin-bottom: 15px;
    }

    .vision-section p {
        font-size: 15px;
        line-height: 1.8;
    }

    .vision-divider {
        width: 50px;
        margin: 30px auto;
    }
    }

    .vision-video {
        max-width: 300px;
    }

    .contact-info {
        grid-template-columns: 1fr;
    }

    .contact-combined-grid {
        grid-template-columns: 1fr 1fr;
        gap: 20px;
    }

    .vision-content {
        transform: translateY(-30px);
    }

    .contact-card {
        transform: translateX(50px);
    }

    .contact-combined-grid.active .contact-card {
        transform: translateX(0);
    }

    .vision-content h2 {
        font-size: 20px;
        margin-bottom: 30px;
    }

    .vision-content h3 {
        font-size: 16px;
        margin-bottom: 10px;
    }

    .vision-content p {
        font-size: 13px;
        line-height: 1.6;
    }

    .vision-divider {
        width: 40px;
        margin: 20px auto;
    }

    .contact-card {
        padding: 20px 15px;
    }

    .contact-card h2 {
        font-size: 20px;
        margin-bottom: 20px;
    }

    .contact-info {
        gap: 15px;
    }

    .info-item h4 {
        font-size: 14px;
        margin-bottom: 5px;
    }

    .info-item p {
        font-size: 12px;
    }