/* 使用系统字体栈，避免Google Fonts国内加载失败 */
/* font-display: swap 确保字体加载前显示后备字体 */

:root {
    --primary: #0066cc;
    --primary-dark: #004999;
    --primary-light: #3399ff;
    --accent: #ff6b35;
    --dark: #0a1628;
    --dark-2: #121f36;
    --dark-3: #1a2d4d;
    --gray-1: #f5f7fa;
    --gray-2: #e8ecf1;
    --gray-3: #c0c8d4;
    --gray-4: #8896a6;
    --gray-5: #4a5568;
    --white: #ffffff;
    --text-primary: #1a202c;
    --text-secondary: #4a5568;
    --text-light: #a0aec0;
    --shadow-sm: 0 2px 8px rgba(0,0,0,0.08);
    --shadow-md: 0 4px 16px rgba(0,0,0,0.12);
    --shadow-lg: 0 8px 32px rgba(0,0,0,0.16);
    --radius-sm: 8px;
    --radius-md: 12px;
    --radius-lg: 16px;
    --transition: all 0.3s ease;
}

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

html {
    scroll-behavior: smooth;
}

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

a {
    text-decoration: none;
    color: inherit;
    transition: var(--transition);
}

img {
    max-width: 100%;
    height: auto;
    display: block;
}

.container {
    max-width: 1280px;
    margin: 0 auto;
    padding: 0 24px;
}

.header {
    position: fixed;
    top: 0;
    left: 0;
    right: 0;
    z-index: 1000;
    background: rgba(10, 22, 40, 0.95);
    backdrop-filter: blur(20px);
    border-bottom: 1px solid rgba(255,255,255,0.08);
    transition: var(--transition);
}

.header.scrolled {
    background: rgba(10, 22, 40, 0.98);
    box-shadow: 0 4px 20px rgba(0,0,0,0.3);
}

.header-inner {
    max-width: 1280px;
    margin: 0 auto;
    padding: 0 24px;
    display: flex;
    align-items: center;
    justify-content: space-between;
    height: 72px;
}

.logo {
    display: flex;
    align-items: center;
    gap: 8px;
}

.logo-text {
    font-size: 28px;
    font-weight: 900;
    color: var(--white);
    letter-spacing: 2px;
}

.logo-sub {
    font-size: 12px;
    color: var(--gray-3);
    letter-spacing: 2px;
    border-left: 1px solid var(--gray-4);
    padding-left: 8px;
    margin-left: 4px;
}

.nav {
    display: flex;
    align-items: center;
    gap: 4px;
    flex-wrap: nowrap;
}

.nav-link {
    color: var(--gray-3);
    font-size: 15px;
    font-weight: 400;
    padding: 8px 16px;
    border-radius: var(--radius-sm);
    transition: var(--transition);
    position: relative;
    white-space: nowrap;
    flex-shrink: 0;
}

/* 中等屏幕导航栏缩小字体防止换行 */
@media (max-width: 1200px) and (min-width: 769px) {
    .nav-link {
        font-size: 13px;
        padding: 8px 10px;
    }
    .header-inner {
        padding: 0 20px;
    }
    .logo-text {
        font-size: 24px;
    }
    .logo-sub {
        font-size: 11px;
    }
}

@media (max-width: 1024px) and (min-width: 769px) {
    .nav-link {
        font-size: 12px;
        padding: 8px 8px;
    }
    .btn-header {
        padding: 6px 12px;
        font-size: 12px;
    }
    .btn-lang {
        padding: 6px 10px;
        font-size: 12px;
    }
}

.nav-link:hover,
.nav-link.active {
    color: var(--white);
    background: rgba(255,255,255,0.08);
}

.nav-link.active::after {
    content: '';
    position: absolute;
    bottom: 0;
    left: 50%;
    transform: translateX(-50%);
    width: 20px;
    height: 2px;
    background: var(--primary-light);
    border-radius: 1px;
}

.arrow-down {
    display: inline-block;
    width: 0;
    height: 0;
    border-left: 4px solid transparent;
    border-right: 4px solid transparent;
    border-top: 4px solid currentColor;
    margin-left: 4px;
    vertical-align: middle;
}

.nav-dropdown {
    position: relative;
}

.dropdown-menu {
    position: absolute;
    top: 100%;
    left: 0;
    min-width: 180px;
    background: var(--dark-2);
    border-radius: var(--radius-md);
    padding: 8px;
    opacity: 0;
    visibility: hidden;
    transform: translateY(8px);
    transition: var(--transition);
    box-shadow: var(--shadow-lg);
    border: 1px solid rgba(255,255,255,0.08);
}

.dropdown-menu.mega-menu {
    min-width: 800px;
    padding: 0;
    display: flex;
    background: var(--dark-2);
}

.mega-menu-categories {
    width: 140px;
    padding: 12px 0;
    background: rgba(0,0,0,0.2);
    border-right: 1px solid rgba(255,255,255,0.1);
}

.mega-menu-category-item {
    display: block;
    padding: 12px 16px;
    color: var(--gray-3);
    font-size: 14px;
    transition: all 0.3s ease;
    text-align: left;
}

.mega-menu-category-item:hover,
.mega-menu-category-item.active {
    color: var(--white);
    background: rgba(255,255,255,0.08);
}

.mega-menu-products {
    flex: 1;
    padding: 16px;
}

.mega-menu-products-grid {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: 16px;
}

.mega-menu-product {
    display: flex;
    flex-direction: column;
    align-items: center;
    transition: transform 0.3s ease;
}

.mega-menu-product:hover {
    transform: translateY(-4px);
}

.mega-menu-product img {
    width: 100px;
    height: 100px;
    object-fit: contain;
    margin-bottom: 8px;
    background: #ffffff;
    border-radius: 8px;
    padding: 8px;
    transition: transform 0.3s ease;
}

.mega-menu-product:hover img {
    transform: scale(1.1);
}

.mega-menu-product-name {
    color: var(--gray-3);
    font-size: 12px;
    transition: color 0.3s ease;
}

.mega-menu-product:hover .mega-menu-product-name {
    color: var(--white);
}

.mega-menu-more {
    display: block;
    margin-top: 16px;
    padding: 8px 16px;
    background: rgba(255,255,255,0.1);
    border-radius: 4px;
    color: var(--gray-3);
    font-size: 12px;
    text-align: center;
    transition: all 0.3s ease;
}

.mega-menu-more:hover {
    background: var(--primary);
    color: var(--white);
}

/* 中等屏幕缩小 mega-menu 宽度并调整为 2 列网格 */
@media (max-width: 1024px) and (min-width: 769px) {
    .dropdown-menu.mega-menu {
        min-width: 600px;
    }
    .mega-menu-products-grid {
        grid-template-columns: repeat(2, 1fr);
    }
}

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

.dropdown-item {
    display: block;
    padding: 10px 16px;
    color: var(--gray-3);
    font-size: 14px;
    border-radius: var(--radius-sm);
    transition: var(--transition);
}

.dropdown-item:hover {
    color: var(--white);
    background: rgba(255,255,255,0.08);
}

.header-actions {
    display: flex;
    align-items: center;
    gap: 12px;
}

.btn-header {
    display: inline-flex;
    align-items: center;
    padding: 8px 20px;
    background: var(--primary);
    color: var(--white);
    border-radius: 20px;
    font-size: 14px;
    font-weight: 500;
    transition: var(--transition);
}

.btn-header:hover {
    background: var(--primary-light);
    transform: translateY(-1px);
}

.btn-lang {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    padding: 6px 14px;
    background: transparent;
    color: rgba(255,255,255,0.8);
    border: 1px solid rgba(255,255,255,0.3);
    border-radius: 16px;
    font-size: 12px;
    font-weight: 600;
    cursor: pointer;
    transition: var(--transition);
    letter-spacing: 1px;
}

.btn-lang:hover {
    background: rgba(255,255,255,0.1);
    color: var(--white);
    border-color: rgba(255,255,255,0.6);
}

.mobile-menu-btn {
    display: none;
    flex-direction: column;
    gap: 5px;
    background: none;
    border: none;
    cursor: pointer;
    padding: 4px;
}

.mobile-menu-btn span {
    display: block;
    width: 24px;
    height: 2px;
    background: var(--white);
    border-radius: 1px;
    transition: var(--transition);
}

.hero {
    position: relative;
    height: 100vh;
    min-height: 600px;
    overflow: hidden;
    background: linear-gradient(135deg, #0a1628 0%, #0d2137 50%, #0a1628 100%);
}

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

.hero-video-wrapper,
.hero-slides-wrapper {
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    opacity: 0;
    visibility: hidden;
    transition: opacity 0.6s ease, visibility 0.6s ease;
}

.hero-video-wrapper.active,
.hero-slides-wrapper.active {
    opacity: 1;
    visibility: visible;
}

.hero-video {
    width: 100%;
    height: 100%;
    object-fit: cover;
    position: absolute;
    top: 0;
    left: 0;
    opacity: 0;
    visibility: hidden;
    transition: opacity 0.15s ease;
}

.hero-video-lang.active {
    opacity: 1;
    visibility: visible;
}

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

.hero-slide {
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    visibility: hidden;
}

.hero-slide.active {
    visibility: visible;
    animation: slideInRight 0.6s ease-out forwards;
}

.hero-slide.slide-out {
    visibility: visible;
    animation: slideOutLeft 0.6s ease-out forwards;
}

@keyframes slideInRight {
    from { transform: translateX(100%); }
    to { transform: translateX(0); }
}

@keyframes slideOutLeft {
    from { transform: translateX(0); }
    to { transform: translateX(-100%); }
}

.hero-slide-image {
    width: 100%;
    height: 100%;
    object-fit: cover;
    display: block;
}

.hero-slide-overlay {
    position: absolute;
    top: 0;
    left: 15%;
    width: 45%;
    height: 100%;
    display: flex;
    flex-direction: column;
    justify-content: center;
    padding: 0 60px;
    color: #fff;
    z-index: 2;
}

.hero-slide-overlay.dark-text {
    color: #000000;
}

.hero-overlay-tag {
    display: inline-block;
    padding: 8px 24px;
    background: rgba(255,255,255,0.15);
    border: 1px solid rgba(255,255,255,0.3);
    border-radius: 24px;
    font-size: 16px;
    letter-spacing: 3px;
    margin-bottom: 28px;
    backdrop-filter: blur(4px);
    width: fit-content;
    opacity: 0;
    transform: translateY(30px);
    transition: opacity 0.6s ease 0.1s, transform 0.6s ease 0.1s;
}

.dark-text .hero-overlay-tag {
    background: rgba(0,0,0,0.1);
    border-color: rgba(0,0,0,0.2);
}

.hero-overlay-title {
    font-size: clamp(26px, 3.1vw, 60px);
    font-weight: 700;
    line-height: 1.3;
    margin-bottom: 20px;
    letter-spacing: 1px;
    white-space: nowrap;
    opacity: 0;
    transform: translateY(30px);
    transition: opacity 0.6s ease 0.25s, transform 0.6s ease 0.25s;
}

/* 英文版轮播海报标题 */
html[lang="en"] .hero-overlay-title {
    font-size: clamp(20px, 2.5vw, 44px);
    letter-spacing: 0.5px;
}

.hero-overlay-desc {
    font-size: clamp(14px, 1.5vw, 24px);
    color: rgba(255,255,255,0.9);
    margin-bottom: 16px;
    letter-spacing: 0.5px;
    white-space: nowrap;
    opacity: 0;
    transform: translateY(30px);
    transition: opacity 0.6s ease 0.4s, transform 0.6s ease 0.4s;
}

/* 英文版轮播海报描述 */
html[lang="en"] .hero-overlay-desc {
    font-size: clamp(12px, 1.2vw, 18px);
}

.dark-text .hero-overlay-desc {
    color: #000000;
}

/* 窄屏文字换行，避免 nowrap 溢出容器 */
@media (max-width: 480px) {
    .hero-overlay-title,
    .hero-overlay-desc {
        white-space: normal;
        word-break: break-word;
    }
}

.hero-slide.active .hero-overlay-tag,
.hero-slide.active .hero-overlay-title,
.hero-slide.active .hero-overlay-desc {
    opacity: 1;
    transform: translateY(0);
}

.hero-slide[data-index="3"] .hero-overlay-title {
    font-size: clamp(22px, 2.8vw, 54px) !important;
}

.hero-slide[data-index="3"] .hero-overlay-desc {
    font-size: clamp(12px, 1.3vw, 22px) !important;
    color: #000000 !important;
}

/* 英文版第3张轮播图 */
html[lang="en"] .hero-slide[data-index="3"] .hero-overlay-title {
    font-size: clamp(18px, 2.2vw, 40px) !important;
}

html[lang="en"] .hero-slide[data-index="3"] .hero-overlay-desc {
    font-size: clamp(11px, 1vw, 16px) !important;
    color: #000000 !important;
}

.hero-slide-bg {
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background: linear-gradient(135deg, rgba(0,20,40,0.9) 0%, rgba(0,40,80,0.8) 50%, rgba(0,60,120,0.9) 100%);
}




.hero-slide-content {
    position: relative;
    z-index: 2;
    max-width: 450px;
    text-align: left;
    padding: 0;
    flex-shrink: 0;
}

.hero-slide-product {
    position: relative;
    z-index: 2;
    display: flex;
    align-items: center;
    justify-content: center;
    flex-shrink: 0;
}

.hero-slide-product img {
    max-width: 100%;
    max-height: 70vh;
    object-fit: contain;
    filter: drop-shadow(0 20px 40px rgba(0,0,0,0.3));
}

.hero-slide-tag {
    display: inline-block;
    padding: 8px 24px;
    background: rgba(255,255,255,0.15);
    backdrop-filter: blur(10px);
    border: 1px solid rgba(255,255,255,0.2);
    border-radius: 30px;
    font-size: 14px;
    color: var(--white);
    letter-spacing: 2px;
    margin-bottom: 28px;
    opacity: 0;
    transform: translateY(30px);
}

.hero-slide.active .hero-slide-tag {
    animation: slideUp 0.6s ease forwards;
    animation-delay: 0.2s;
}

.hero-slide-title {
    font-size: 56px;
    font-weight: 900;
    color: var(--white);
    line-height: 1.2;
    margin-bottom: 24px;
    letter-spacing: -1px;
    opacity: 0;
    transform: translateY(30px);
}

.hero-slide.active .hero-slide-title {
    animation: slideUp 0.6s ease forwards;
    animation-delay: 0.4s;
}

.hero-slide-desc {
    font-size: 20px;
    color: var(--gray-3);
    margin-bottom: 36px;
    letter-spacing: 2px;
    opacity: 0;
    transform: translateY(30px);
}

.hero-slide.active .hero-slide-desc {
    animation: slideUp 0.6s ease forwards;
    animation-delay: 0.6s;
}

.hero-slide-btn {
    opacity: 0;
    transform: translateY(30px);
}

.hero-slide.active .hero-slide-btn {
    animation: slideUp 0.6s ease forwards;
    animation-delay: 0.8s;
}

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

.hero-indicators {
    position: absolute;
    bottom: 40px;
    left: 50%;
    transform: translateX(-50%);
    display: flex;
    gap: 12px;
    z-index: 100;
}

.hero-indicator {
    width: 10px;
    height: 10px;
    border-radius: 50%;
    background: #ffffff;
    cursor: pointer;
    transition: all 0.3s ease;
    opacity: 0.4;
}

.hero-indicator:hover {
    opacity: 0.7;
}

.hero-indicator.active {
    width: 32px;
    border-radius: 5px;
    background: #ffffff;
    opacity: 1;
}

.hero-indicator:hover::before {
    background: rgba(255,255,255,0.9);
}

/* Hero 左右切换按钮（电脑端显示） */
.hero-nav-btn {
    position: absolute;
    top: 50%;
    transform: translateY(-50%);
    width: 44px;
    height: 44px;
    border-radius: 50%;
    background: rgba(0,0,0,0.35);
    border: none;
    color: #fff;
    cursor: pointer;
    display: none;
    align-items: center;
    justify-content: center;
    z-index: 15;
    transition: background 0.25s ease, transform 0.25s ease;
    backdrop-filter: blur(2px);
}

.hero-nav-btn:hover {
    background: rgba(0,0,0,0.6);
}

.hero-nav-btn:active {
    transform: translateY(-50%) scale(0.92);
}

.hero-nav-btn svg {
    width: 22px;
    height: 22px;
}

.hero-nav-prev {
    left: 24px;
}

.hero-nav-next {
    right: 24px;
}

@media (min-width: 769px) {
    .hero:hover .hero-nav-btn,
    .hero-nav-btn:focus {
        display: flex;
    }
}

@keyframes indicatorPulse {
    0% {
        transform: translate(-50%, -50%) scale(1);
        opacity: 0.3;
    }
    100% {
        transform: translate(-50%, -50%) scale(1.8);
        opacity: 0;
    }
}

@keyframes rotateProgress {
    0% {
        transform: rotate(0deg);
    }
    100% {
        transform: rotate(360deg);
    }
}

@keyframes pulse {
    0%, 100% {
        box-shadow: 0 0 0 4px rgba(255,255,255,0.3);
    }
    50% {
        box-shadow: 0 0 0 8px rgba(255,255,255,0.1);
    }
}

.hero-indicator svg,
.hero-indicator img {
    display: none;
}

.hero-indicator:hover,
.hero-indicator.active {
    border-color: var(--white);
    background: rgba(255,255,255,0.2);
}

.hero-indicator:hover svg,
.hero-indicator.active svg {
    color: var(--white);
}

.hero-overlay {
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background: linear-gradient(135deg, rgba(0,20,40,0.85) 0%, rgba(0,40,80,0.7) 50%, rgba(0,60,120,0.85) 100%);
    z-index: 1;
}

.hero-content {
    position: relative;
    z-index: 2;
    max-width: 1280px;
    margin: 0 auto;
    padding: 0 24px;
    text-align: center;
}

.hero-title {
    font-size: 56px;
    font-weight: 900;
    color: var(--white);
    line-height: 1.2;
    margin-bottom: 20px;
    letter-spacing: -1px;
}

.hero-desc {
    font-size: 20px;
    color: var(--gray-3);
    margin-bottom: 36px;
    letter-spacing: 4px;
}

.btn-primary {
    display: inline-flex;
    align-items: center;
    padding: 14px 36px;
    background: var(--primary);
    color: var(--white);
    border-radius: 28px;
    font-size: 16px;
    font-weight: 500;
    transition: var(--transition);
    border: none;
    cursor: pointer;
}

.btn-primary:hover {
    background: var(--primary-light);
    transform: translateY(-2px);
    box-shadow: 0 8px 24px rgba(0, 102, 204, 0.4);
}

.btn-outline {
    display: inline-flex;
    align-items: center;
    padding: 14px 36px;
    background: transparent;
    color: var(--primary);
    border: 2px solid var(--primary);
    border-radius: 28px;
    font-size: 16px;
    font-weight: 500;
    transition: var(--transition);
}

.btn-outline:hover {
    background: var(--primary);
    color: var(--white);
    transform: translateY(-2px);
}

.btn-outline-light {
    display: inline-flex;
    align-items: center;
    padding: 14px 36px;
    background: transparent;
    color: var(--white);
    border: 2px solid rgba(255,255,255,0.4);
    border-radius: 28px;
    font-size: 16px;
    font-weight: 500;
    transition: var(--transition);
}

.btn-outline-light:hover {
    background: rgba(255,255,255,0.1);
    border-color: var(--white);
}

.animate-fade-up {
    opacity: 0;
    transform: translateY(30px);
    animation: fadeUp 0.8s ease forwards;
}

.delay-1 { animation-delay: 0.2s; }
.delay-2 { animation-delay: 0.4s; }

.animate-fade-right {
    opacity: 0;
    transform: translateY(-50%) translateX(30px);
    animation: fadeRight 0.8s ease forwards;
    animation-delay: 0.3s;
}

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

@keyframes fadeRight {
    to {
        opacity: 1;
        transform: translateY(-50%) translateX(0);
    }
}

.products-section {
    padding: 100px 0;
    background: var(--gray-1);
}

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

.section-title {
    font-size: 36px;
    font-weight: 700;
    color: var(--text-primary);
    margin-bottom: 16px;
}

.section-desc {
    font-size: 16px;
    color: var(--text-secondary);
}

.products-grid {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: 24px;
}

.product-card {
    background: var(--white);
    border-radius: var(--radius-lg);
    overflow: hidden;
    transition: var(--transition);
    box-shadow: var(--shadow-sm);
    display: block;
}

.product-card:hover {
    transform: translateY(-8px);
    box-shadow: var(--shadow-lg);
}

.product-image {
    position: relative;
    height: 240px;
    background: #ffffff;
    display: flex;
    align-items: center;
    justify-content: center;
    overflow: hidden;
}

.product-image img {
    max-width: 85%;
    max-height: 85%;
    object-fit: contain;
}

.product-overlay {
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    display: flex;
    align-items: center;
    justify-content: center;
    opacity: 0;
    z-index: 1;
}

.product-overlay img {
    max-width: 85%;
    max-height: 85%;
    object-fit: contain;
}

.product-card-with-overlay:hover .product-overlay {
    opacity: 1;
}

.product-card-with-overlay:hover .product-image > img:first-child {
    opacity: 0;
}

.product-image > img:first-child {
    z-index: 2;
}

.product-badge {
    position: absolute;
    top: 16px;
    right: 16px;
    background: var(--accent);
    color: var(--white);
    padding: 4px 12px;
    border-radius: 12px;
    font-size: 12px;
    font-weight: 500;
    z-index: 10;
}

.product-info {
    padding: 24px;
}

.product-info h3 {
    font-size: 18px;
    font-weight: 600;
    color: var(--text-primary);
    margin-bottom: 8px;
}

.product-info p {
    font-size: 14px;
    color: var(--text-secondary);
    margin-bottom: 16px;
    line-height: 1.6;
}

.product-link {
    font-size: 14px;
    color: var(--primary);
    font-weight: 500;
}

.product-card:hover .product-link {
    color: var(--primary-light);
}

.section-footer {
    text-align: center;
    margin-top: 48px;
}

.stats-section {
    padding: 80px 0;
    background: var(--dark);
    color: var(--white);
}

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

.stats-header h2 {
    font-size: 32px;
    font-weight: 700;
    margin-bottom: 16px;
}

.stats-header p {
    font-size: 16px;
    color: var(--gray-3);
}

.stats-grid {
    display: grid;
    grid-template-columns: repeat(5, 1fr);
    gap: 32px;
}

.stat-item-mobile {
    display: none;
}

.stat-item {
    text-align: center;
    padding: 24px;
}

.stat-number {
    font-size: 48px;
    font-weight: 900;
    color: var(--primary-light);
    display: inline;
}

.stat-suffix {
    font-size: 24px;
    font-weight: 700;
    color: var(--primary-light);
}

.stat-label {
    display: block;
    font-size: 14px;
    color: var(--gray-3);
    margin-top: 8px;
}

.solutions-section {
    padding: 100px 0;
    background: var(--white);
}

.solutions-grid {
    display: grid;
    grid-template-columns: repeat(4, 1fr);
    gap: 24px;
}

.solution-card {
    padding: 40px 28px;
    background: var(--gray-1);
    border-radius: var(--radius-lg);
    text-align: center;
    transition: var(--transition);
    display: block;
    border: 1px solid transparent;
}

.solution-card:hover {
    background: var(--white);
    border-color: var(--primary);
    box-shadow: var(--shadow-md);
    transform: translateY(-4px);
}

.solution-icon {
    width: 64px;
    height: 64px;
    margin: 0 auto 20px;
    color: var(--primary);
}

.solution-icon svg {
    width: 100%;
    height: 100%;
}

.solution-card h3 {
    font-size: 20px;
    font-weight: 600;
    color: var(--text-primary);
    margin-bottom: 12px;
}

.solution-card p {
    font-size: 14px;
    color: var(--text-secondary);
    line-height: 1.6;
}

.news-section {
    padding: 100px 0;
    background: var(--gray-1);
}

.news-grid {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 24px;
}

.news-card {
    background: var(--white);
    border-radius: var(--radius-lg);
    overflow: hidden;
    transition: var(--transition);
    box-shadow: var(--shadow-sm);
    display: block;
}

.news-card:hover {
    transform: translateY(-4px);
    box-shadow: var(--shadow-md);
}

.news-card-large {
    grid-row: span 2;
}

.news-card-large .news-image {
    height: 320px;
}

.news-image {
    height: 180px;
    background: linear-gradient(135deg, #e8ecf1 0%, #d0d8e4 100%);
    overflow: hidden;
}

.news-image img {
    width: 100%;
    height: 100%;
    object-fit: cover;
}

.news-content {
    padding: 24px;
}

.news-tag {
    display: inline-block;
    padding: 4px 12px;
    background: rgba(0, 102, 204, 0.1);
    color: var(--primary);
    border-radius: 12px;
    font-size: 12px;
    font-weight: 500;
    margin-bottom: 12px;
}

.news-content h3 {
    font-size: 18px;
    font-weight: 600;
    color: var(--text-primary);
    margin-bottom: 12px;
    line-height: 1.5;
}

.news-card-large .news-content h3 {
    font-size: 22px;
}

.news-content p {
    font-size: 14px;
    color: var(--text-secondary);
    line-height: 1.6;
    margin-bottom: 12px;
}

.news-date {
    font-size: 13px;
    color: var(--gray-4);
}

.cta-section {
    padding: 100px 0;
    background: linear-gradient(135deg, var(--dark) 0%, var(--dark-3) 100%);
    color: var(--white);
    text-align: center;
}

.cta-content h2 {
    font-size: 36px;
    font-weight: 700;
    margin-bottom: 16px;
}

.cta-content p {
    font-size: 18px;
    color: var(--gray-3);
    margin-bottom: 36px;
}

.cta-buttons {
    display: flex;
    gap: 16px;
    justify-content: center;
}

.footer {
    background: var(--dark);
    color: var(--gray-3);
    padding: 60px 0 0;
}

.footer-grid {
    display: grid;
    grid-template-columns: 1.5fr 1fr 1fr 1fr 1.2fr;
    gap: 40px;
    padding-bottom: 40px;
    border-bottom: 1px solid rgba(255,255,255,0.08);
}

.footer-brand p {
    font-size: 14px;
    line-height: 1.8;
    margin-top: 16px;
    color: var(--gray-4);
}

.footer-social {
    display: flex;
    gap: 12px;
    margin-top: 20px;
}

.social-link {
    width: 36px;
    height: 36px;
    background: rgba(255,255,255,0.08);
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    color: var(--gray-3);
    transition: var(--transition);
}

.social-link:hover {
    background: var(--primary);
    color: var(--white);
}

.social-link svg {
    width: 18px;
    height: 18px;
    object-fit: contain;
    display: block;
    margin: 0 auto;
    position: relative;
    top: 50%;
    transform: translateY(-50%);
}

.footer-col h4 {
    color: var(--white);
    font-size: 16px;
    font-weight: 600;
    margin-bottom: 20px;
}

.footer-col a,
.footer-col p {
    display: block;
    font-size: 14px;
    color: var(--gray-4);
    margin-bottom: 10px;
    transition: var(--transition);
}

.footer-col a:hover {
    color: var(--white);
    padding-left: 4px;
}

.btn-taobao {
    display: inline-block;
    margin-top: 12px;
    padding: 8px 20px;
    background: #ff4400;
    color: var(--white) !important;
    border-radius: 20px;
    font-size: 13px;
    font-weight: 500;
}

.btn-taobao:hover {
    background: #ff6633;
    padding-left: 20px !important;
}

.footer-bottom {
    padding: 20px 0;
    text-align: center;
    font-size: 13px;
    color: var(--gray-3);
}

.footer-bottom a {
    color: var(--gray-4);
}

.footer-bottom a:hover {
    color: var(--white);
}

.back-to-top {
    position: fixed;
    bottom: 32px;
    right: 32px;
    width: 44px;
    height: 44px;
    background: var(--primary);
    color: var(--white);
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    cursor: pointer;
    opacity: 0;
    visibility: hidden;
    transform: translateY(20px);
    transition: var(--transition);
    box-shadow: var(--shadow-md);
    z-index: 999;
}

.back-to-top.visible {
    opacity: 1;
    visibility: visible;
    transform: translateY(0);
}

.back-to-top:hover {
    background: var(--primary-light);
    transform: translateY(-4px);
}

.back-to-top svg {
    width: 20px;
    height: 20px;
}

.page-banner {
    padding-top: 72px;
    height: 360px;
    display: flex;
    align-items: center;
    justify-content: center;
    text-align: center;
    color: var(--white);
    position: relative;
    overflow: hidden;
}

.page-banner::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background: linear-gradient(135deg, var(--dark) 0%, var(--dark-3) 100%);
    z-index: 0;
}

.page-banner-content {
    position: relative;
    z-index: 1;
}

.page-banner h1 {
    font-size: 42px;
    font-weight: 700;
    margin-bottom: 12px;
}

.page-banner p {
    font-size: 18px;
    color: var(--gray-3);
}

.page-content {
    padding: 80px 0;
}

.product-filter {
    display: flex;
    justify-content: center;
    gap: 8px;
    margin-bottom: 48px;
    flex-wrap: wrap;
    align-items: center;
    position: sticky;
    top: 70px;
    z-index: 10;
    background: #fff;
    padding: 12px 0;
}

.product-search {
    position: relative;
    display: flex;
    align-items: center;
    margin-right: 12px;
}

.product-search svg {
    position: absolute;
    left: 12px;
    color: var(--text-secondary);
    pointer-events: none;
}

.product-search input {
    padding: 8px 16px 8px 36px;
    border: 1px solid var(--gray-2);
    border-radius: 20px;
    background: var(--white);
    color: var(--text-primary);
    font-size: 14px;
    width: 200px;
    outline: none;
    transition: var(--transition);
}

.product-search input:focus {
    border-color: var(--primary);
    box-shadow: 0 0 0 3px rgba(0,82,165,0.1);
    width: 240px;
}

.product-search input::placeholder {
    color: var(--text-secondary);
}

.filter-btn {
    padding: 8px 24px;
    border: 1px solid var(--gray-2);
    border-radius: 20px;
    background: var(--white);
    color: var(--text-secondary);
    font-size: 14px;
    cursor: pointer;
    transition: var(--transition);
}

.filter-btn:hover,
.filter-btn.active {
    background: var(--primary);
    color: var(--white);
    border-color: var(--primary);
}

.products-full-grid {
    display: grid;
    grid-template-columns: repeat(5, 1fr);
    gap: 20px;
}

.timeline {
    max-width: 800px;
    margin: 0 auto;
    position: relative;
    padding-left: 40px;
}

.timeline::before {
    content: '';
    position: absolute;
    left: 15px;
    top: 0;
    bottom: 0;
    width: 2px;
    background: var(--gray-2);
}

.timeline-item {
    position: relative;
    padding-bottom: 40px;
}

.timeline-item::before {
    content: '';
    position: absolute;
    left: -33px;
    top: 4px;
    width: 12px;
    height: 12px;
    background: var(--primary);
    border-radius: 50%;
    border: 3px solid var(--white);
    box-shadow: 0 0 0 2px var(--primary);
}

.timeline-year {
    font-size: 24px;
    font-weight: 700;
    color: var(--primary);
    margin-bottom: 8px;
}

.timeline-text {
    font-size: 15px;
    color: var(--text-secondary);
    line-height: 1.8;
}

.news-list {
    display: grid;
    grid-template-columns: repeat(2, 1fr);
    gap: 24px;
}

.contact-grid {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 48px;
}

.contact-info-card {
    padding: 32px;
    background: var(--gray-1);
    border-radius: var(--radius-lg);
    margin-bottom: 20px;
}

.contact-info-card h3 {
    font-size: 18px;
    font-weight: 600;
    margin-bottom: 12px;
    color: var(--text-primary);
}

.contact-info-card p {
    font-size: 14px;
    color: var(--text-secondary);
    line-height: 1.8;
}

.contact-form {
    background: var(--gray-1);
    padding: 40px;
    border-radius: var(--radius-lg);
}

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

.form-group label {
    display: block;
    font-size: 14px;
    font-weight: 500;
    color: var(--text-primary);
    margin-bottom: 8px;
}

.form-group input,
.form-group textarea,
.form-group select {
    width: 100%;
    padding: 12px 16px;
    border: 1px solid var(--gray-2);
    border-radius: var(--radius-sm);
    font-size: 14px;
    font-family: inherit;
    transition: var(--transition);
    background: var(--white);
}

.form-group input:focus,
.form-group textarea:focus,
.form-group select:focus {
    outline: none;
    border-color: var(--primary);
    box-shadow: 0 0 0 3px rgba(0, 102, 204, 0.1);
}

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

.about-intro {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 60px;
    align-items: center;
    margin-bottom: 80px;
}

.about-intro-text h2 {
    font-size: 32px;
    font-weight: 700;
    margin-bottom: 20px;
    color: var(--text-primary);
}

.about-intro-text p {
    font-size: 15px;
    color: var(--text-secondary);
    line-height: 1.8;
    margin-bottom: 16px;
}

.about-image {
    border-radius: var(--radius-lg);
    overflow: hidden;
    background: linear-gradient(135deg, #e8ecf1 0%, #d0d8e4 100%);
    height: 400px;
}

.about-image img {
    width: 100%;
    height: 100%;
    object-fit: cover;
}

.values-grid {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: 32px;
    margin-top: 60px;
}

.value-card {
    text-align: center;
    padding: 40px 28px;
    background: var(--gray-1);
    border-radius: var(--radius-lg);
    transition: var(--transition);
}

.value-card:hover {
    transform: translateY(-4px);
    box-shadow: var(--shadow-md);
}

.value-icon {
    width: 56px;
    height: 56px;
    margin: 0 auto 16px;
    color: var(--primary);
}

.value-icon svg {
    width: 100%;
    height: 100%;
}

.value-card h3 {
    font-size: 18px;
    font-weight: 600;
    margin-bottom: 8px;
}

.value-card p {
    font-size: 14px;
    color: var(--text-secondary);
    line-height: 1.6;
}

.solution-detail {
    padding: 60px 0;
    border-bottom: 1px solid var(--gray-2);
}

.solution-detail:last-child {
    border-bottom: none;
}

.solution-detail-grid {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 48px;
    align-items: center;
}

.solution-detail:nth-child(even) .solution-detail-grid {
    direction: rtl;
}

.solution-detail:nth-child(even) .solution-detail-grid > * {
    direction: ltr;
}

.solution-detail-text h2 {
    font-size: 28px;
    font-weight: 700;
    margin-bottom: 16px;
}

.solution-detail-text p {
    font-size: 15px;
    color: var(--text-secondary);
    line-height: 1.8;
    margin-bottom: 12px;
}

.solution-detail-image {
    border-radius: var(--radius-lg);
    overflow: hidden;
    background: linear-gradient(135deg, #e8ecf1 0%, #d0d8e4 100%);
    height: 320px;
}

.solution-detail-image img {
    width: 100%;
    height: 100%;
    object-fit: cover;
}

@media (max-width: 1024px) {
    .products-grid {
        grid-template-columns: repeat(2, 1fr);
    }
    .stats-grid {
        grid-template-columns: repeat(3, 1fr);
    }
    .solutions-grid {
        grid-template-columns: repeat(2, 1fr);
    }
    .footer-grid {
        grid-template-columns: repeat(3, 1fr);
    }
    .hero-content {
        width: 60%;
        padding-left: 40px;
    }
    .hero-title {
        font-size: 42px;
    }
    .products-full-grid {
        grid-template-columns: repeat(3, 1fr);
    }
}

@media (max-width: 768px) {
    :root {
        --radius-lg: 12px;
        --radius-md: 10px;
    }

    .header-inner {
        height: 56px;
        padding: 0 16px;
    }

    .logo-text {
        font-size: 20px;
        letter-spacing: 1px;
    }

    .logo-sub {
        display: none;
    }

    .btn-header {
        padding: 5px 12px;
        font-size: 11px;
        border-radius: 16px;
    }

    .nav {
        display: none;
        position: fixed;
        top: 56px;
        left: 0;
        right: 0;
        bottom: 0;
        background: rgba(0, 20, 40, 0.98);
        backdrop-filter: blur(10px);
        flex-direction: column;
        padding: 12px 0;
        gap: 0;
        overflow-y: auto;
        -webkit-overflow-scrolling: touch;
        z-index: 1001;
        height: calc(100vh - 56px);
    }

    .nav.open {
        display: flex !important;
        flex-direction: column !important;
    }

    .mobile-nav-overlay {
        display: none;
        position: fixed;
        top: 0;
        left: 0;
        right: 0;
        bottom: 0;
        background: rgba(0, 0, 0, 0.5);
        z-index: 999;
        opacity: 0;
        transition: opacity 0.3s ease;
    }

    .mobile-nav-overlay.show {
        display: block;
        opacity: 1;
    }

    .nav-link {
        padding: 16px 24px;
        border-bottom: 1px solid rgba(255,255,255,0.08);
        font-size: 16px;
        color: rgba(255,255,255,0.8);
        display: flex;
        width: 100%;
        justify-content: center;
        align-items: center;
        gap: 8px;
    }

    .nav-link::after {
        content: '›';
        font-size: 18px;
        opacity: 0.5;
    }

    .nav-link:hover,
    .nav-link.active {
        color: var(--white);
        background: rgba(255,255,255,0.08);
    }

    .nav-dropdown .dropdown-menu {
        position: static;
        opacity: 1;
        visibility: visible;
        transform: none;
        background: rgba(255,255,255,0.03);
        box-shadow: none;
        border: none;
        padding: 0;
        margin: 0;
        display: none !important;
    }

    .nav-dropdown .nav-link {
        display: block;
        text-align: center;
    }

    .nav-dropdown .nav-link .arrow-down {
        display: none;
    }

    .nav-dropdown.open .dropdown-menu {
        display: block !important;
    }

    .dropdown-item {
        padding: 14px 24px;
        font-size: 14px;
        color: rgba(255,255,255,0.7);
        display: block;
        text-align: center;
        border-bottom: 1px solid rgba(255,255,255,0.04);
    }

    .dropdown-item:hover {
        color: var(--white);
        background: rgba(255,255,255,0.06);
    }

    .mobile-menu-btn {
        display: flex;
    }

    .mobile-menu-btn span {
        width: 20px;
    }

    .hero {
        height: auto !important;
        min-height: auto !important;
    }

    .hero-media-container {
        position: relative;
        width: 100%;
        height: 0;
        padding-top: 133.33%;
    }

    .hero-video-wrapper,
    .hero-slides-wrapper {
        position: absolute;
        top: 0;
        left: 0;
        width: 100%;
        height: 100%;
    }

    .hero-video {
        object-fit: contain !important;
    }

    .hero-slide {
        flex-direction: column !important;
        padding: 0 !important;
        gap: 0 !important;
        justify-content: flex-start !important;
        position: absolute !important;
        transform: translateX(100%) !important;
    }

    .hero-slide.active {
        transform: translateX(0) !important;
    }

    .hero-slide.slide-left {
        transform: translateX(-100%) !important;
    }

    .hero-slide-image {
        width: 100% !important;
        height: 100% !important;
        object-fit: cover !important;
    }

    .hero-slide-content {
        text-align: center !important;
        max-width: 100% !important;
        flex-shrink: 0;
    }

    .hero-slide-product {
        flex: 1;
        min-height: 0;
    }

    .hero-slide-product img {
        max-height: none !important;
        height: 100% !important;
        width: auto !important;
        object-fit: contain;
    }

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

    .hero-tag {
        font-size: 10px;
        padding: 2px 10px;
        margin-bottom: 6px;
        letter-spacing: 1px;
    }

    .hero-title {
        font-size: 20px;
        margin-bottom: 6px;
        line-height: 1.3;
    }

    .hero-desc {
        font-size: 12px;
        letter-spacing: 0.5px;
        margin-bottom: 8px;
    }

    .hero-scroll-hint {
        display: none;
    }

    .hero-slide-overlay {
        width: 100% !important;
        left: 0 !important;
        padding: 0 24px !important;
        top: 0 !important;
        height: 100% !important;
        justify-content: flex-start !important;
        align-items: center !important;
        text-align: center !important;
        padding-top: 12% !important;
        background: none !important;
    }

    .hero-overlay-tag {
        display: none !important;
    }

    .hero-overlay-title {
        font-size: 32px !important;
        margin-bottom: 12px !important;
    }

    .hero-overlay-desc {
        display: none !important;
    }

    .hero-overlay-sub {
        display: none !important;
    }

    .hero-slide-overlay.dark-text {
        color: #fff !important;
    }

    .hero-slide-overlay.dark-text .hero-overlay-desc {
        color: rgba(255,255,255,0.9) !important;
    }

    .hero-slide[data-index="3"] .hero-overlay-desc {
        color: #fff !important;
        display: none !important;
    }

    /* 手机端Banner 3文字大小颜色与前两张统一 */
    .hero-slide[data-index="3"] .hero-overlay-title {
        font-size: 32px !important;
        color: #fff !important;
    }

    .hero-slide[data-index="3"] .hero-overlay-tag {
        display: none !important;
    }

    .hero-particles {
        display: none;
    }

    .animate-fade-up {
        opacity: 1;
        transform: none;
        animation: none;
    }

    .animate-fade-right {
        opacity: 1;
        transform: none;
        animation: none;
    }

    .delay-1, .delay-2, .delay-3 {
        animation-delay: 0s;
    }

    .container {
        padding: 0 16px;
    }

    .products-section {
        padding: 48px 0;
    }

    .section-header {
        margin-bottom: 28px;
    }

    .section-title {
        font-size: 22px;
    }

    .section-desc {
        font-size: 13px;
    }

    .products-grid {
        grid-template-columns: repeat(2, 1fr);
        gap: 10px;
    }

    .product-card {
        border-radius: var(--radius-md);
    }

    .product-image {
        height: 180px;
    }

    .product-image img {
        max-width: 85%;
        max-height: 85%;
    }

    .product-info {
        padding: 8px 10px 10px;
    }

    .product-info h3 {
        font-size: 13px;
        margin-bottom: 2px;
    }

    .product-info p {
        font-size: 11px;
        margin-bottom: 6px;
        display: -webkit-box;
        -webkit-line-clamp: 2;
        -webkit-box-orient: vertical;
        overflow: hidden;
        line-height: 1.5;
    }

    .product-link {
        font-size: 11px;
    }

    .product-badge {
        top: 6px;
        right: 6px;
        font-size: 9px;
        padding: 2px 6px;
    }

    .product-overlay {
        display: none !important;
    }

    .product-card-with-overlay:hover .product-image > img:first-child {
        opacity: 1 !important;
    }

    .product-overlay span {
        font-size: 11px;
        padding: 5px 14px;
        border-width: 1.5px;
    }

    .stats-section {
        padding: 48px 0;
    }

    .stats-header {
        margin-bottom: 36px;
    }

    .stats-header h2 {
        font-size: 20px;
        line-height: 1.4;
    }

    .stats-header p {
        font-size: 13px;
    }

    .stats-grid {
        grid-template-columns: repeat(3, 1fr);
        gap: 8px;
    }

    .stat-item-mobile {
        display: block;
    }

    .stat-item {
        padding: 16px 4px;
    }

    .stat-number {
        font-size: 28px;
    }

    .stat-suffix {
        font-size: 14px;
    }

    .stat-label {
        font-size: 11px;
        margin-top: 4px;
    }

    .solutions-section {
        padding: 48px 0;
    }

    .solutions-grid {
        grid-template-columns: repeat(2, 1fr);
        gap: 10px;
    }

    .solution-card {
        padding: 20px 14px;
        border-radius: var(--radius-md);
    }

    .solution-icon {
        width: 40px;
        height: 40px;
        margin-bottom: 10px;
    }

    .solution-card h3 {
        font-size: 15px;
        margin-bottom: 4px;
    }

    .solution-card p {
        font-size: 11px;
        line-height: 1.5;
    }

    .news-section {
        padding: 48px 0;
    }

    .news-grid {
        grid-template-columns: 1fr;
        gap: 12px;
    }

    .news-card-large {
        grid-row: auto;
    }

    .news-card-large .news-image {
        height: 180px;
    }

    .news-image {
        height: 140px;
    }

    .news-content {
        padding: 14px;
    }

    .news-tag {
        font-size: 10px;
        padding: 2px 8px;
        margin-bottom: 8px;
    }

    .news-content h3 {
        font-size: 15px;
        line-height: 1.4;
    }

    .news-card-large .news-content h3 {
        font-size: 17px;
    }

    .news-content p {
        font-size: 12px;
    }

    .news-date {
        font-size: 11px;
    }

    .cta-section {
        padding: 48px 0;
    }

    .cta-content h2 {
        font-size: 22px;
    }

    .cta-content p {
        font-size: 14px;
        margin-bottom: 24px;
    }

    .cta-buttons {
        flex-direction: column;
        align-items: center;
        gap: 12px;
    }

    .btn-primary {
        padding: 8px 20px;
        font-size: 12px;
        border-radius: 20px;
    }

    .btn-outline {
        padding: 11px 28px;
        font-size: 14px;
        border-radius: 24px;
    }

    .btn-outline-light {
        padding: 11px 28px;
        font-size: 14px;
        border-radius: 24px;
    }

    .footer {
        padding: 36px 0 0;
    }

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

    .footer-brand {
        grid-column: 1 / -1;
    }

    .footer-col h4 {
        font-size: 14px;
        margin-bottom: 12px;
    }

    .footer-col a,
    .footer-col p {
        font-size: 12px;
        margin-bottom: 6px;
    }

    .footer-social {
        gap: 8px;
        margin-top: 12px;
    }

    .social-link {
        width: 32px;
        height: 32px;
    }

    .social-link svg {
        width: 15px;
        height: 15px;
    }

    .btn-taobao {
        margin-top: 6px;
        padding: 5px 14px;
        font-size: 11px;
    }

    .footer-bottom {
        padding: 14px 0;
    }

    .footer-bottom p {
        font-size: 11px;
    }

    .hero-arrow {
        display: none;
    }

    .page-banner {
        height: 220px;
        padding-top: 56px;
    }

    .page-banner h1 {
        font-size: 24px;
    }

    .page-banner p {
        font-size: 13px;
    }

    .page-content {
        padding: 36px 0;
    }

    .product-filter {
        gap: 6px;
        margin-bottom: 24px;
        flex-wrap: wrap;
        justify-content: flex-start;
        padding: 0;
    }

    .product-search {
        margin-right: 0;
        width: 100%;
        margin-bottom: 8px;
    }

    .product-search input {
        width: 100%;
    }

    .product-search input:focus {
        width: 100%;
    }

    .filter-btn {
        padding: 6px 12px;
        font-size: 12px;
        border-radius: 16px;
    }

    .products-full-grid {
        grid-template-columns: repeat(2, 1fr);
        gap: 10px;
    }

    .category-title {
        font-size: 16px;
        margin-bottom: 12px;
        padding-bottom: 6px;
        border-bottom-width: 2px;
    }

    .product-category {
        margin-bottom: 28px;
    }

    .product-category .products-full-grid {
        margin-top: 12px;
    }

    .about-intro {
        grid-template-columns: 1fr;
        gap: 24px;
        margin-bottom: 36px;
    }

    .about-intro-text h2 {
        font-size: 22px;
        margin-bottom: 12px;
    }

    .about-intro-text p {
        font-size: 13px;
        line-height: 1.7;
        margin-bottom: 10px;
    }

    .about-image {
        height: 200px;
        border-radius: var(--radius-md);
    }

    .values-grid {
        grid-template-columns: 1fr;
        gap: 12px;
    }

    .value-card {
        padding: 24px 16px;
        border-radius: var(--radius-md);
    }

    .value-icon {
        width: 44px;
        height: 44px;
        margin-bottom: 12px;
    }

    .value-card h3 {
        font-size: 16px;
        margin-bottom: 4px;
    }

    .value-card p {
        font-size: 12px;
        line-height: 1.6;
    }

    .timeline {
        padding-left: 28px;
    }

    .timeline::before {
        left: 10px;
    }

    .timeline-item {
        padding-bottom: 28px;
    }

    .timeline-item::before {
        left: -26px;
        width: 10px;
        height: 10px;
    }

    .timeline-year {
        font-size: 18px;
    }

    .timeline-text {
        font-size: 13px;
        line-height: 1.7;
    }

    .contact-grid {
        grid-template-columns: 1fr;
        gap: 24px;
    }

    .contact-info-card {
        padding: 16px;
        border-radius: var(--radius-md);
        margin-bottom: 10px;
    }

    .contact-info-card h3 {
        font-size: 15px;
        margin-bottom: 8px;
    }

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

    .contact-form {
        padding: 20px;
        border-radius: var(--radius-md);
    }

    .contact-form h3 {
        font-size: 17px;
    }

    .form-group input,
    .form-group textarea,
    .form-group select {
        padding: 10px 12px;
        font-size: 14px;
    }

    .solution-detail {
        padding: 32px 0;
    }

    .solution-detail-grid {
        grid-template-columns: 1fr;
        gap: 20px;
    }

    .solution-detail:nth-child(even) .solution-detail-grid {
        direction: ltr;
    }

    .solution-detail-text h2 {
        font-size: 20px;
        margin-bottom: 10px;
    }

    .solution-detail-text p {
        font-size: 13px;
        line-height: 1.7;
        margin-bottom: 8px;
    }

    .solution-detail-image {
        height: 180px;
        border-radius: var(--radius-md);
    }

    .section-footer {
        margin-top: 28px;
    }

    .news-list {
        grid-template-columns: 1fr;
        gap: 12px;
    }

    .back-to-top {
        bottom: 16px;
        right: 16px;
        width: 36px;
        height: 36px;
    }

    .back-to-top svg {
        width: 16px;
        height: 16px;
    }

    .page-loader {
        display: none !important;
    }

    .reveal-up {
        opacity: 1;
        transform: none;
        transition: none;
    }

    .reveal-up.revealed {
        opacity: 1;
        transform: none;
    }

    .section-smart-instruments,
    .section-new-products,
    .section-about {
        padding: 36px 0 !important;
    }

    .section-smart-instruments .container {
        padding: 0 16px !important;
    }

    .section-smart-instruments .section-header {
        margin-bottom: 20px !important;
    }

    .smart-instruments-grid {
        margin-top: 20px !important;
    }

    .smart-wide-image {
        margin-bottom: 8px !important;
    }

    .smart-wide-image img {
        width: 100% !important;
        height: auto !important;
        aspect-ratio: 1024/1000 !important;
        border-radius: 10px !important;
        object-fit: cover !important;
    }

    .smart-wide-overlay {
        width: 100% !important;
        height: 100% !important;
        padding: 0 20px !important;
        justify-content: flex-start !important;
        align-items: center !important;
        text-align: center !important;
        padding-top: 8% !important;
    }

    .smart-wide-title {
        font-size: clamp(24px, 5vw, 48px) !important;
        white-space: nowrap !important;
        margin-bottom: 8px !important;
    }

    .smart-wide-desc {
        font-size: clamp(14px, 3vw, 24px) !important;
        white-space: nowrap !important;
        margin-bottom: 16px !important;
    }

    .smart-wide-btn {
        display: none !important;
        opacity: 1 !important;
        transform: none !important;
        font-size: 14px !important;
        padding: 8px 24px !important;
    }

    .smart-small-images {
        grid-template-columns: repeat(2, 1fr) !important;
        gap: 8px !important;
    }

    .smart-small-item {
        border-radius: 10px !important;
        overflow: visible !important;
    }

    .smart-small-item img {
        width: 100% !important;
        height: auto !important;
        aspect-ratio: 490/440 !important;
        object-fit: cover !important;
        border-radius: 10px !important;
    }

    .smart-small-overlay {
        height: 100% !important;
        transform: none !important;
        background: linear-gradient(to bottom, rgba(0,0,0,0) 0%, rgba(0,0,0,0) 40%, rgba(0,20,50,0.5) 70%, rgba(0,20,50,0.85) 100%) !important;
        padding: 0 14px !important;
        align-items: center !important;
        justify-content: flex-end !important;
        text-align: center !important;
        overflow: visible !important;
    }

    .smart-small-name {
        font-size: 20px !important;
        margin-bottom: 0 !important;
        color: #fff !important;
        text-shadow: none !important;
        transform: translateY(-5px) !important;
    }

    .smart-small-link {
        display: none !important;
    }

    /* 手机端第三个分类单独一行居中 - 钳形表图片是1024x440宽幅 */
    .smart-small-item:last-child {
        grid-column: 1 / -1;
        max-width: 100%;
        justify-self: center;
        overflow: hidden !important;
        border-radius: 10px !important;
    }

    .smart-small-item:last-child img {
        aspect-ratio: 1024/440 !important;
        max-height: none !important;
        width: 100% !important;
        object-fit: contain !important;
        background: #f8f9fa !important;
    }

    .smart-small-item:last-child .smart-small-overlay {
        align-items: flex-start !important;
        text-align: left !important;
        justify-content: flex-start !important;
        padding: 5% 14px 16px 20px !important;
        color: #000 !important;
        background: none !important;
    }

    .smart-small-item:last-child .smart-small-name {
        font-size: 24px !important;
    }

    .smart-small-item:last-child .smart-small-link {
        font-size: 16px !important;
        border-color: rgba(0,0,0,0.4) !important;
        color: #000 !important;
    }

    .section-new-products .section-header {
        padding: 0 16px !important;
        margin-bottom: 20px !important;
    }

    .section-new-products {
        overflow: hidden !important;
    }

    .new-products-carousel {
        padding: 0 16px !important;
        overflow: visible !important;
    }

    .carousel-inner {
        overflow: visible !important;
    }

    .carousel-track {
        gap: 12px !important;
    }

    .carousel-slide {
        flex: 0 0 80% !important;
        max-width: 80% !important;
        border-radius: 12px !important;
    }

    .carousel-slide > img {
        aspect-ratio: 16 / 9 !important;
        object-fit: cover !important;
    }

    .slide-overlay {
        width: 100% !important;
        height: 100% !important;
        top: 0 !important;
        bottom: auto !important;
        left: 0 !important;
        padding: 0 20px !important;
        background: none !important;
        justify-content: flex-start !important;
        align-items: center !important;
        text-align: center !important;
        padding-top: 8% !important;
    }

    .slide-overlay h3 {
        font-size: clamp(24px, 6vw, 40px) !important;
        white-space: nowrap !important;
        margin-bottom: 6px !important;
    }

    .slide-overlay p {
        font-size: clamp(18px, 4vw, 30px) !important;
        white-space: nowrap !important;
        margin-bottom: 4px !important;
    }

    .slide-overlay .slide-tag {
        display: none !important;
    }

    /* 手机端隐藏NEW标签（覆盖更高特异性规则） */
    .new-products-carousel .slide-overlay .slide-tag {
        display: none !important;
    }

    .carousel-arrow {
        width: 30px !important;
        height: 30px !important;
    }

    .carousel-arrow svg {
        width: 16px !important;
        height: 16px !important;
    }

    .carousel-prev {
        left: 4px !important;
    }

    .carousel-next {
        right: 4px !important;
    }

    .carousel-dots {
        margin-top: 14px !important;
    }

    .carousel-dot {
        width: 7px !important;
        height: 7px !important;
    }

    .about-grid {
        grid-template-columns: 1fr !important;
        gap: 16px !important;
        margin-top: 20px !important;
    }

    .section-about .container {
        padding: 0 16px !important;
    }

    .about-text {
        order: -1 !important;
    }

    .about-video {
        border-radius: 10px !important;
        min-height: auto !important;
        aspect-ratio: 16/9 !important;
        width: 100% !important;
        max-width: 100% !important;
    }

    .about-text .section-title {
        text-align: center !important;
        margin-bottom: 10px !important;
    }

    .about-text p {
        display: block !important;
    }
}

@media (max-width: 480px) {
    .about-video {
        min-height: auto !important;
        aspect-ratio: 16/9 !important;
        width: 100% !important;
    }
    .about-video .video-play-btn {
        width: 50px !important;
        height: 50px !important;
    }
    .about-video .video-play-btn svg {
        width: 30px !important;
        height: 30px !important;
    }
    .hero-title {
        font-size: 22px;
    }

    .hero-desc {
        font-size: 12px;
        letter-spacing: 0.5px;
    }

    .products-grid {
        grid-template-columns: 1fr 1fr;
        gap: 8px;
    }

    .products-full-grid {
        grid-template-columns: repeat(2, 1fr);
        gap: 8px;
    }

    .product-image {
        height: 120px;
    }

    .product-info {
        padding: 8px 10px 10px;
    }

    .product-info h3 {
        font-size: 12px;
    }

    .product-info p {
        font-size: 10px;
        -webkit-line-clamp: 1;
        margin-bottom: 4px;
    }

    .product-link {
        font-size: 10px;
    }

    .stats-grid {
        grid-template-columns: repeat(2, 1fr);
        gap: 6px;
    }

    .stat-item-mobile {
        display: block;
    }

    .stat-number {
        font-size: 24px;
    }

    .stat-suffix {
        font-size: 12px;
    }

    .stat-label {
        font-size: 10px;
    }

    .solutions-grid {
        grid-template-columns: 1fr 1fr;
        gap: 8px;
    }

    .solution-card {
        padding: 16px 10px;
    }

    .solution-card h3 {
        font-size: 13px;
    }

    .solution-card p {
        font-size: 10px;
    }

    .page-banner {
        height: 180px;
    }

    .page-banner h1 {
        font-size: 20px;
    }

    .footer-grid {
        grid-template-columns: 1fr 1fr;
        gap: 16px;
    }

    .carousel-slide {
        flex: 0 0 88% !important;
        max-width: 88% !important;
    }

    .carousel-slide > img {
        aspect-ratio: 9 / 10 !important;
    }

    .smart-wide-image img {
        height: auto !important;
        aspect-ratio: 1024/1000 !important;
    }

    .smart-small-item img {
        height: auto !important;
        aspect-ratio: 490/440 !important;
    }

    .smart-small-item:last-child img {
        aspect-ratio: 1024/440 !important;
        object-fit: contain !important;
        background: #f8f9fa !important;
    }

    .smart-small-name {
        font-size: 20px !important;
    }

    .smart-small-item:last-child .smart-small-name {
        font-size: 24px !important;
        color: #000 !important;
    }

    .smart-small-link {
        font-size: 10px !important;
        padding: 3px 10px !important;
    }
}

/* ===== 智能创仪表 ===== */
.section-smart-instruments {
    padding: 80px 0;
    background: #f8f9fa;
}

.section-smart-instruments .container {
    max-width: 1600px;
    padding: 0 60px;
}

.smart-instruments-grid {
    margin-top: 40px;
}

.smart-wide-image {
    width: 100%;
    border-radius: 12px;
    overflow: hidden;
    margin-bottom: 16px;
    position: relative;
}

.smart-wide-image img {
    width: 100%;
    height: 570px;
    object-fit: cover;
    display: block;
    transition: transform 0.3s ease;
}

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

.smart-wide-overlay {
    position: absolute;
    top: 0;
    left: 0;
    width: 50%;
    height: 100%;
    display: flex;
    flex-direction: column;
    justify-content: flex-start;
    padding: 10% 50px 0;
    color: #fff;
    z-index: 2;
}

.smart-wide-title {
    font-size: clamp(28px, 5vw, 71px);
    font-weight: 700;
    margin-bottom: 16px;
    letter-spacing: 2px;
    white-space: nowrap;
    opacity: 0;
    transform: translateX(-50px) scale(0.9);
    transition: opacity 0.7s ease 0.1s, transform 0.7s cubic-bezier(0.16, 1, 0.3, 1) 0.1s;
}

/* 英文版Smart Instruments标题 */
html[lang="en"] .smart-wide-title {
    font-size: clamp(20px, 3.5vw, 50px);
    letter-spacing: 1px;
}

.smart-wide-desc {
    font-size: clamp(16px, 3vw, 34px);
    margin-bottom: 60px;
    white-space: nowrap;
    opacity: 0;
    transform: translateX(-50px);
    transition: opacity 0.7s ease 0.3s, transform 0.7s cubic-bezier(0.16, 1, 0.3, 1) 0.3s;
    color: rgba(255,255,255,0.9);
}

/* 英文版Smart Instruments描述 */
html[lang="en"] .smart-wide-desc {
    font-size: clamp(11px, 2.1vw, 24px);
}

.smart-wide-btn {
    display: inline-block;
    padding: 12px 32px;
    border: 1px solid rgba(255,255,255,0.5);
    border-radius: 30px;
    color: #fff;
    text-decoration: none;
    font-size: 15px;
    letter-spacing: 1px;
    width: fit-content;
    opacity: 0;
    transform: translateY(20px);
    transition: opacity 0.6s ease 0.5s, transform 0.6s cubic-bezier(0.16, 1, 0.3, 1) 0.5s, background 0.3s ease;
}

.smart-wide-btn:hover {
    background: rgba(255,255,255,0.15);
}

.smart-wide-image.revealed .smart-wide-title,
.smart-wide-image.revealed .smart-wide-desc,
.smart-wide-image.revealed .smart-wide-btn {
    opacity: 1;
    transform: translateX(0) scale(1);
}

.smart-small-images {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: 16px;
}

.smart-small-item {
    display: block;
    position: relative;
    border-radius: 12px;
    overflow: hidden;
    cursor: pointer;
    text-decoration: none;
    color: inherit;
}

.smart-small-item:hover {
    transform: translateY(-4px);
    box-shadow: 0 8px 24px rgba(0,0,0,0.12);
}

.smart-small-item img {
    width: 100%;
    height: 400px;
    object-fit: cover;
    display: block;
    transition: transform 0.3s ease;
}

.smart-small-item:hover img {
    transform: scale(1.03);
}

.smart-small-overlay {
    position: absolute;
    bottom: 0;
    left: 0;
    right: 0;
    height: 100%;
    padding: 0 24px 10px;
    background: linear-gradient(to bottom, rgba(0,0,0,0) 0%, rgba(0,0,0,0) 50%, rgba(0,20,50,0.5) 75%, rgba(0,20,50,0.85) 100%);
    color: #fff;
    display: flex;
    flex-direction: column;
    align-items: center;
    justify-content: flex-end;
    text-align: center;
    transform: translateY(50px);
    transition: background 0.5s ease, transform 0.4s ease;
}

.smart-small-item:hover .smart-small-overlay {
    background: linear-gradient(to bottom, rgba(0,0,0,0) 0%, rgba(0,20,50,0) 20%, rgba(0,20,50,0.6) 50%, rgba(0,20,50,0.92) 100%);
    transform: translateY(0);
}

.smart-small-name {
    font-size: 36px;
    font-weight: 600;
    letter-spacing: 2px;
    margin-bottom: 12px;
    transition: transform 0.4s cubic-bezier(0.16, 1, 0.3, 1), font-size 0.4s ease;
}

.smart-small-item:hover .smart-small-name {
    transform: scale(1.1);
    font-size: 42px;
}

.smart-small-link {
    display: inline-block;
    font-size: 13px;
    padding: 6px 18px;
    border: 1px solid rgba(255,255,255,0.5);
    border-radius: 20px;
    opacity: 0;
    letter-spacing: 0.5px;
    transition: opacity 0.4s ease 0.1s, transform 0.3s ease, background 0.3s ease;
}

.smart-small-item:hover .smart-small-link {
    opacity: 1;
    transform: translateY(0);
}

.smart-small-link:hover {
    background: rgba(255,255,255,0.15);
}

/* ===== 新品展示 ===== */
.section-new-products {
    padding: 80px 0;
    background: #fff;
}

.section-new-products .section-header {
    text-align: center;
    margin-bottom: 40px;
}

.new-products-carousel {
    position: relative;
    width: 100%;
    overflow: hidden;
}

.carousel-inner {
    position: relative;
    width: 100%;
    overflow: hidden;
}

.carousel-track {
    display: flex;
    transition: transform 0.6s cubic-bezier(0.25, 0.46, 0.45, 0.94);
    gap: 20px;
    padding: 0 0;
}

.carousel-slide {
    flex: 0 0 55%;
    max-width: 55%;
    border-radius: 16px;
    overflow: hidden;
    position: relative;
}

.carousel-slide > img {
    width: 100%;
    height: auto;
    display: block;
}

.slide-overlay {
    position: absolute;
    top: 0;
    left: 5%;
    width: 45%;
    height: 100%;
    display: flex;
    flex-direction: column;
    justify-content: flex-start;
    align-items: flex-start;
    padding: 14% 20px 0;
    color: #fff;
    z-index: 2;
}

.slide-overlay .slide-tag {
    display: inline-block;
    padding: 6px 20px;
    background: rgba(255,255,255,0.15);
    border: 1px solid rgba(255,255,255,0.3);
    border-radius: 20px;
    font-size: 16px;
    letter-spacing: 2px;
    margin-bottom: 18px;
    backdrop-filter: blur(4px);
    width: fit-content;
    opacity: 0;
    transform: translateX(-40px);
    transition: opacity 0.6s cubic-bezier(0.16, 1, 0.3, 1) 0.1s, transform 0.6s cubic-bezier(0.16, 1, 0.3, 1) 0.1s;
}

.slide-overlay h3 {
    font-size: clamp(28px, 4.5vw, 60px);
    font-weight: 700;
    line-height: 1.2;
    margin-bottom: 10px;
    letter-spacing: 1px;
    white-space: nowrap;
    opacity: 0;
    transform: translateX(-40px);
    transition: opacity 0.6s cubic-bezier(0.16, 1, 0.3, 1) 0.25s, transform 0.6s cubic-bezier(0.16, 1, 0.3, 1) 0.25s;
}

/* 英文版新品展示标题 */
html[lang="en"] .slide-overlay h3 {
    font-size: clamp(22px, 3.5vw, 44px);
    letter-spacing: 0.5px;
}

.slide-overlay p {
    font-size: clamp(16px, 2.5vw, 32px);
    white-space: nowrap;
    opacity: 0;
    transform: translateX(-40px);
    transition: opacity 0.6s cubic-bezier(0.16, 1, 0.3, 1) 0.4s, transform 0.6s cubic-bezier(0.16, 1, 0.3, 1) 0.4s;
    letter-spacing: 1px;
    color: rgba(255,255,255,0.85);
}

/* 英文版新品展示描述 */
html[lang="en"] .slide-overlay p {
    font-size: clamp(12px, 1.8vw, 24px);
}

.carousel-slide.active-slide .slide-overlay .slide-tag,
.carousel-slide.active-slide .slide-overlay h3,
.carousel-slide.active-slide .slide-overlay p {
    opacity: 1;
    transform: translateX(0);
}

.carousel-slide.no-transition .slide-overlay .slide-tag,
.carousel-slide.no-transition .slide-overlay h3,
.carousel-slide.no-transition .slide-overlay p {
    transition: none !important;
    opacity: 1;
    transform: none;
}

/* Show slide-overlay title, hide description (3rd line) */
.new-products-carousel .slide-overlay {
    display: flex !important;
}
.new-products-carousel .slide-overlay .slide-tag {
    display: inline-block;
}
.new-products-carousel .slide-overlay h3 {
    display: block;
}
.new-products-carousel .slide-overlay p {
    display: none;
}

.carousel-arrow {
    position: absolute;
    top: 50%;
    transform: translateY(-50%);
    width: 48px;
    height: 48px;
    border-radius: 50%;
    border: none;
    background: rgba(255,255,255,0.85);
    cursor: pointer;
    display: flex;
    align-items: center;
    justify-content: center;
    z-index: 10;
    transition: all 0.3s ease;
    color: #333;
    box-shadow: 0 2px 12px rgba(0,0,0,0.1);
}

.carousel-arrow:hover {
    background: var(--primary, #0066cc);
    color: #fff;
    box-shadow: 0 4px 20px rgba(0,102,204,0.3);
    transform: translateY(-50%) scale(1.05);
}

.carousel-prev {
    left: 18%;
}

.carousel-next {
    right: 18%;
}

.carousel-dots {
    display: flex;
    justify-content: center;
    gap: 10px;
    margin-top: 24px;
}

.carousel-dot {
    width: 10px;
    height: 10px;
    border-radius: 50%;
    background: #ddd;
    cursor: pointer;
    transition: all 0.3s ease;
}

.carousel-dot.active {
    background: var(--primary, #0066cc);
    transform: scale(1.2);
}

.slide-bg {
    width: 100%;
    aspect-ratio: 2 / 1;
    position: relative;
    overflow: hidden;
}

.slide-content {
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    display: flex;
    align-items: center;
    justify-content: center;
    gap: 40px;
    padding: 0 50px;
}

.slide-product {
    flex: 0 0 auto;
    max-width: 40%;
}

.slide-product img {
    width: 100%;
    max-height: 85%;
    object-fit: contain;
    filter: drop-shadow(0 20px 40px rgba(0,0,0,0.4));
}

.slide-text {
    color: #fff;
    max-width: 40%;
}

.slide-tag {
    display: inline-block;
    padding: 6px 20px;
    background: rgba(255,255,255,0.15);
    border: 1px solid rgba(255,255,255,0.3);
    border-radius: 20px;
    font-size: 14px;
    letter-spacing: 2px;
    margin-bottom: 16px;
    backdrop-filter: blur(4px);
}

.slide-text h3 {
    font-size: 40px;
    font-weight: 700;
    margin-bottom: 12px;
    letter-spacing: 1px;
}

.slide-text p {
    font-size: 18px;
    opacity: 0.8;
    letter-spacing: 1px;
}

.carousel-slide .slide-product {
    opacity: 0;
    transform: translateX(-60px);
    transition: opacity 0.6s ease 0.2s, transform 0.6s ease 0.2s;
}

.carousel-slide .slide-text .slide-tag {
    opacity: 0;
    transform: translateY(20px);
    transition: opacity 0.5s ease 0.3s, transform 0.5s ease 0.3s;
}

.carousel-slide .slide-text h3 {
    opacity: 0;
    transform: translateY(20px);
    transition: opacity 0.5s ease 0.4s, transform 0.5s ease 0.4s;
}

.carousel-slide .slide-text p {
    opacity: 0;
    transform: translateY(20px);
    transition: opacity 0.5s ease 0.5s, transform 0.5s ease 0.5s;
}

.carousel-slide.active-slide .slide-product {
    opacity: 1;
    transform: translateX(0);
}

.carousel-slide.active-slide .slide-text .slide-tag {
    opacity: 1;
    transform: translateY(0);
}

.carousel-slide.active-slide .slide-text h3 {
    opacity: 1;
    transform: translateY(0);
}

.carousel-slide.active-slide .slide-text p {
    opacity: 0.8;
    transform: translateY(0);
}

.carousel-slide.no-transition .slide-product,
.carousel-slide.no-transition .slide-text .slide-tag,
.carousel-slide.no-transition .slide-text h3,
.carousel-slide.no-transition .slide-text p {
    transition: none !important;
    opacity: 1;
    transform: none;
}

.carousel-slide.no-transition .slide-text p {
    opacity: 0.8;
}

/* ===== 公司简介 ===== */
.section-about {
    padding: 80px 0;
    background: #f8f9fa;
    position: relative;
    overflow: hidden;
}

.section-about .container {
    max-width: 1600px;
    padding: 0 60px;
}

.about-grid {
    display: grid;
    grid-template-columns: 1.3fr 1fr;
    gap: 50px;
    align-items: start;
    margin-top: 40px;
}

/* 中等屏幕公司简介布局调整 - 单列防止文字盖视频 */
@media (max-width: 1200px) and (min-width: 769px) {
    .about-grid {
        grid-template-columns: 1fr;
        gap: 30px;
    }
    .section-about .container {
        padding: 0 30px;
    }
    .about-text {
        max-width: 900px;
        margin: 0 auto;
    }
    .about-video {
        max-width: 900px;
        margin: 0 auto;
        min-height: 350px;
    }
    .about-text p {
        font-size: 14px;
        line-height: 1.8;
    }
}

.about-video {
    border-radius: 16px;
    overflow: hidden;
    background: #000;
    box-shadow: 0 20px 60px rgba(0,0,0,0.12);
    position: relative;
    min-height: 400px;
    aspect-ratio: 16/9;
}

.about-video video {
    width: 100%;
    height: 100%;
    object-fit: cover;
    display: block;
}

.video-mute-btn {
    position: absolute;
    bottom: 16px;
    right: 16px;
    width: 44px;
    height: 44px;
    border-radius: 50%;
    border: none;
    background: rgba(0,0,0,0.6);
    color: #fff;
    cursor: pointer;
    display: flex;
    align-items: center;
    justify-content: center;
    transition: background 0.3s ease, transform 0.2s ease;
    z-index: 2;
}

.video-mute-btn:hover {
    background: rgba(0,0,0,0.8);
    transform: scale(1.1);
}

.video-mute-btn.unmuted {
    background: rgba(0,102,204,0.8);
}

.video-play-btn {
    position: absolute;
    top: 50%;
    left: 50%;
    transform: translate(-50%, -50%);
    width: 80px;
    height: 80px;
    border-radius: 50%;
    border: 3px solid rgba(255,255,255,0.8);
    background: rgba(0,102,204,0.7);
    color: #fff;
    cursor: pointer;
    display: flex;
    align-items: center;
    justify-content: center;
    transition: background 0.3s ease, transform 0.2s ease;
    z-index: 3;
    backdrop-filter: blur(4px);
    animation: playPulse 2s ease-in-out infinite;
}

.video-play-btn:hover {
    background: rgba(0,102,204,0.95);
    transform: translate(-50%, -50%) scale(1.1);
}

@keyframes playPulse {
    0%, 100% { box-shadow: 0 0 0 0 rgba(0,102,204,0.4); }
    50% { box-shadow: 0 0 0 15px rgba(0,102,204,0); }
}

.about-text .section-title {
    text-align: left;
    margin-bottom: 28px;
}

.about-text p {
    font-size: 14.5px;
    line-height: 1.9;
    color: #555;
    margin-bottom: 16px;
    text-align: justify;
}

@media (max-width: 360px) {
    .hero-title {
        font-size: 20px;
    }

    .products-grid,
    .products-full-grid {
        grid-template-columns: 1fr 1fr;
        gap: 6px;
    }

    .product-image {
        height: 100px;
    }

    .product-info h3 {
        font-size: 11px;
    }

    .stats-grid {
        grid-template-columns: repeat(2, 1fr);
    }

    .stat-number {
        font-size: 22px;
    }
}

.hero-particles {
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    z-index: 1;
    pointer-events: none;
}

.hero-scroll-hint {
    position: absolute;
    bottom: 80px;
    left: 50%;
    transform: translateX(-50%);
    z-index: 10;
    display: flex;
    flex-direction: column;
    align-items: center;
    gap: 8px;
    animation: scrollHintFade 2s ease infinite;
}

.hero-scroll-hint span {
    font-size: 12px;
    color: rgba(255,255,255,0.5);
    letter-spacing: 2px;
}

.scroll-mouse {
    width: 24px;
    height: 36px;
    border: 2px solid rgba(255,255,255,0.3);
    border-radius: 12px;
    position: relative;
}

.scroll-wheel {
    width: 3px;
    height: 8px;
    background: rgba(255,255,255,0.6);
    border-radius: 2px;
    position: absolute;
    top: 6px;
    left: 50%;
    transform: translateX(-50%);
    animation: scrollWheel 2s ease infinite;
}

@keyframes scrollWheel {
    0% { opacity: 1; transform: translateX(-50%) translateY(0); }
    100% { opacity: 0; transform: translateX(-50%) translateY(12px); }
}

@keyframes scrollHintFade {
    0%, 100% { opacity: 0.6; }
    50% { opacity: 1; }
}

.hero-tag {
    display: inline-block;
    padding: 6px 20px;
    background: rgba(255,255,255,0.1);
    border: 1px solid rgba(255,255,255,0.2);
    border-radius: 20px;
    font-size: 13px;
    color: var(--primary-light);
    letter-spacing: 2px;
    margin-bottom: 20px;
    backdrop-filter: blur(10px);
}

.reveal-up {
    opacity: 0;
    transform: translateY(40px);
    transition: opacity 0.8s cubic-bezier(0.4, 0, 0.2, 1), transform 0.8s cubic-bezier(0.4, 0, 0.2, 1);
    transition-delay: calc(var(--delay, 0) * 0.1s);
}

.reveal-up.revealed {
    opacity: 1;
    transform: translateY(0);
}

.btn-glow {
    position: relative;
    overflow: hidden;
}

.btn-glow::before {
    content: '';
    position: absolute;
    top: -2px;
    left: -2px;
    right: -2px;
    bottom: -2px;
    background: linear-gradient(45deg, var(--primary), var(--primary-light), #66b3ff, var(--primary));
    border-radius: 30px;
    z-index: -1;
    animation: glowRotate 3s linear infinite;
    background-size: 300% 300%;
}

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

.btn-primary {
    position: relative;
    overflow: hidden;
}

.btn-primary::after {
    content: '';
    position: absolute;
    top: 50%;
    left: 50%;
    width: 0;
    height: 0;
    background: rgba(255,255,255,0.2);
    border-radius: 50%;
    transform: translate(-50%, -50%);
    transition: width 0.6s ease, height 0.6s ease;
}

.btn-primary:active::after {
    width: 300px;
    height: 300px;
}

.category-title {
    font-size: 24px;
    font-weight: 700;
    color: var(--text-primary);
    margin-bottom: 24px;
    padding-bottom: 12px;
    border-bottom: 3px solid var(--primary);
    display: inline-block;
}

.product-category {
    margin-bottom: 48px;
    scroll-margin-top: 80px;
}

.product-category .products-full-grid {
    margin-top: 24px;
}

.product-image {
    position: relative;
    height: 240px;
    background: linear-gradient(135deg, #ffffff 0%, #f5f7fa 100%);
    display: flex;
    align-items: center;
    justify-content: center;
    overflow: hidden;
}

.product-image img {
    max-width: 80%;
    max-height: 80%;
    width: auto;
    height: auto;
    object-fit: contain;
    transition: transform 0.5s cubic-bezier(0.4, 0, 0.2, 1);
}

.product-card-with-overlay:hover .product-image img {
    transform: scale(1.1) translateY(-4px);
}

.product-card {
    background: var(--white);
    border-radius: var(--radius-lg);
    overflow: hidden;
    transition: all 0.4s cubic-bezier(0.4, 0, 0.2, 1);
    box-shadow: var(--shadow-sm);
    display: block;
}

.product-card:hover {
    transform: translateY(-8px);
    box-shadow: 0 20px 40px rgba(0,0,0,0.12);
}

.stats-section {
    position: relative;
    overflow: hidden;
}

.stats-section::before {
    content: '';
    position: absolute;
    top: -50%;
    left: -50%;
    width: 200%;
    height: 200%;
    background: radial-gradient(circle at 30% 50%, rgba(51, 153, 255, 0.08) 0%, transparent 50%),
                radial-gradient(circle at 70% 50%, rgba(51, 153, 255, 0.05) 0%, transparent 50%);
    animation: statsGlow 8s ease infinite;
}

@keyframes statsGlow {
    0%, 100% { transform: translate(0, 0); }
    50% { transform: translate(2%, -2%); }
}

.stat-item {
    position: relative;
    z-index: 1;
}

.solution-card {
    position: relative;
    overflow: hidden;
}

.solution-card::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 3px;
    background: linear-gradient(90deg, var(--primary), var(--primary-light));
    transform: scaleX(0);
    transform-origin: left;
    transition: transform 0.4s cubic-bezier(0.4, 0, 0.2, 1);
}

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

.solution-icon {
    transition: transform 0.4s cubic-bezier(0.4, 0, 0.2, 1);
}

.solution-card:hover .solution-icon {
    transform: scale(1.1) rotateY(10deg);
}

.news-card {
    position: relative;
    overflow: hidden;
}

.news-card::after {
    content: '';
    position: absolute;
    bottom: 0;
    left: 0;
    width: 100%;
    height: 3px;
    background: linear-gradient(90deg, var(--primary), var(--primary-light));
    transform: scaleX(0);
    transform-origin: left;
    transition: transform 0.4s ease;
}

.news-card:hover::after {
    transform: scaleX(1);
}

.news-image img {
    transition: transform 0.6s cubic-bezier(0.4, 0, 0.2, 1);
}

.news-card:hover .news-image img {
    transform: scale(1.08);
}

.cta-section {
    position: relative;
    overflow: hidden;
}

.cta-section::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background: url("data:image/svg+xml,%3Csvg width='60' height='60' viewBox='0 0 60 60' xmlns='http://www.w3.org/2000/svg'%3E%3Cg fill='none' fill-rule='evenodd'%3E%3Cg fill='%23ffffff' fill-opacity='0.03'%3E%3Cpath d='M36 34v-4h-2v4h-4v2h4v4h2v-4h4v-2h-4zm0-30V0h-2v4h-4v2h4v4h2V6h4V4h-4zM6 34v-4H4v4H0v2h4v4h2v-4h4v-2H6zM6 4V0H4v4H0v2h4v4h2V6h4V4H6z'/%3E%3C/g%3E%3C/g%3E%3C/svg%3E");
}

.page-banner::after {
    content: '';
    position: absolute;
    bottom: 0;
    left: 0;
    width: 100%;
    height: 60px;
    background: linear-gradient(to top, var(--white), transparent);
    z-index: 1;
}

.page-banner-content {
    animation: bannerFadeIn 1s ease forwards;
}

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

.filter-btn {
    position: relative;
    overflow: hidden;
    transition: all 0.3s cubic-bezier(0.4, 0, 0.2, 1);
}

.filter-btn::before {
    content: '';
    position: absolute;
    top: 50%;
    left: 50%;
    width: 0;
    height: 0;
    background: rgba(255,255,255,0.2);
    border-radius: 50%;
    transform: translate(-50%, -50%);
    transition: width 0.5s ease, height 0.5s ease;
}

.filter-btn:active::before {
    width: 200px;
    height: 200px;
}

.value-card {
    position: relative;
    overflow: hidden;
}

.value-card::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background: linear-gradient(135deg, rgba(0, 102, 204, 0.03), rgba(51, 153, 255, 0.03));
    opacity: 0;
    transition: opacity 0.4s ease;
}

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

.timeline-item {
    opacity: 0;
    transform: translateX(-20px);
    transition: all 0.6s cubic-bezier(0.4, 0, 0.2, 1);
}

.timeline-item.revealed {
    opacity: 1;
    transform: translateX(0);
}

.social-link {
    transition: all 0.3s cubic-bezier(0.4, 0, 0.2, 1);
}

.social-link:hover {
    transform: translateY(-4px) scale(1.1);
}

.back-to-top {
    transition: all 0.4s cubic-bezier(0.4, 0, 0.2, 1);
}

.back-to-top:hover {
    transform: translateY(-6px);
    box-shadow: 0 8px 24px rgba(0, 102, 204, 0.4);
}

.header-inner {
    transition: all 0.3s ease;
}

.header.scrolled .header-inner {
    height: 60px;
}

.header.scrolled .logo-text {
    font-size: 22px;
}

.product-card.hidden {
    display: none;
}

.product-category.hidden {
    display: none;
}

.resource-tabs {
    display: flex;
    justify-content: center;
    gap: 8px;
    margin-bottom: 24px;
    flex-wrap: wrap;
    position: sticky;
    top: 70px;
    z-index: 10;
    background: #fff;
    padding: 12px 0;
}

.resource-search {
    position: relative;
    display: flex;
    align-items: center;
    margin-bottom: 20px;
}

.resource-search svg {
    position: absolute;
    left: 14px;
    color: var(--text-secondary);
    pointer-events: none;
}

.resource-search input {
    width: 100%;
    max-width: 400px;
    margin: 0 auto;
    padding: 10px 16px 10px 40px;
    border: 1px solid var(--gray-2);
    border-radius: 24px;
    background: var(--white);
    color: var(--text-primary);
    font-size: 14px;
    outline: none;
    transition: border-color 0.3s ease;
}

.resource-search input:focus {
    border-color: var(--primary);
}

.resource-tab {
    display: inline-flex;
    align-items: center;
    gap: 8px;
    padding: 12px 28px;
    background: var(--white);
    border: 1px solid var(--gray-2);
    border-radius: 28px;
    color: var(--text-secondary);
    font-size: 15px;
    font-weight: 500;
    cursor: pointer;
    transition: all 0.3s ease;
    position: relative;
    overflow: hidden;
}

.resource-tab svg {
    width: 20px;
    height: 20px;
    flex-shrink: 0;
}

.resource-tab:hover {
    color: var(--primary);
    border-color: var(--primary);
    background: rgba(0, 102, 204, 0.04);
}

.resource-tab.active {
    color: var(--primary);
    border-color: var(--primary);
    background: rgba(0, 102, 204, 0.08);
    box-shadow: 0 2px 12px rgba(0, 102, 204, 0.15);
}

.resource-tab.active::after {
    content: '';
    position: absolute;
    bottom: 0;
    left: 20%;
    right: 20%;
    height: 3px;
    background: var(--primary);
    border-radius: 3px 3px 0 0;
}

.resource-grid {
    display: grid;
    grid-template-columns: repeat(4, 1fr);
    gap: 12px;
}

.resource-card {
    background: var(--white);
    border-radius: 10px;
    overflow: hidden;
    box-shadow: var(--shadow-sm);
    transition: all 0.3s ease;
    display: flex;
    flex-direction: column;
    align-items: center;
    padding: 14px 12px;
    gap: 8px;
    cursor: pointer;
}

.resource-card:hover {
    box-shadow: 0 4px 16px rgba(0, 0, 0, 0.1);
}

.resource-card-image {
    width: 60px;
    height: 60px;
    min-width: 60px;
    background: linear-gradient(135deg, #ffffff 0%, #f5f7fa 100%);
    display: flex;
    align-items: center;
    justify-content: center;
    overflow: hidden;
    border-radius: 6px;
}

.resource-card-image img {
    max-width: 80%;
    max-height: 80%;
    object-fit: contain;
}

.resource-card-info {
    display: flex;
    flex-direction: column;
    align-items: center;
    gap: 4px;
    min-width: 0;
}

.resource-card-info h3 {
    font-size: 14px;
    font-weight: 600;
    color: var(--text-primary);
    white-space: nowrap;
    overflow: hidden;
    text-overflow: ellipsis;
    max-width: 100%;
}

.resource-card-category {
    display: inline-block;
    padding: 1px 6px;
    background: rgba(0, 102, 204, 0.1);
    color: var(--primary);
    border-radius: 8px;
    font-size: 10px;
    font-weight: 500;
    white-space: nowrap;
}

.resource-card-actions {
    display: flex;
    gap: 6px;
    flex-shrink: 0;
}

.btn-resource-download {
    display: inline-flex;
    align-items: center;
    gap: 6px;
    padding: 8px 20px;
    background: var(--primary);
    color: var(--white);
    border-radius: 20px;
    font-size: 13px;
    font-weight: 500;
    transition: all 0.3s ease;
    text-decoration: none;
}

.btn-resource-download:hover {
    background: var(--primary-light);
    transform: translateY(-2px);
    box-shadow: 0 4px 12px rgba(0, 102, 204, 0.3);
}

.btn-resource-watch {
    display: inline-flex;
    align-items: center;
    gap: 6px;
    padding: 8px 20px;
    background: #10b981;
    color: var(--white);
    border-radius: 20px;
    font-size: 13px;
    font-weight: 500;
    transition: all 0.3s ease;
    text-decoration: none;
}

.btn-resource-watch:hover {
    background: #059669;
    transform: translateY(-2px);
    box-shadow: 0 4px 12px rgba(16, 185, 129, 0.3);
}

.resource-empty {
    text-align: center;
    padding: 80px 20px;
}

.resource-empty p {
    font-size: 18px;
    color: var(--gray-4);
}

@media (max-width: 1024px) {
    .resource-grid {
        grid-template-columns: repeat(2, 1fr);
    }

    /* 新品展示 - 窄窗口文字缩小但不换行 */
    .slide-overlay {
        width: 65% !important;
        padding: 5% 15px 0 !important;
    }
    .slide-overlay .slide-tag {
        font-size: 12px !important;
        padding: 4px 14px !important;
        margin-bottom: 10px !important;
    }
}

@media (max-width: 768px) {
    .resource-tabs {
        justify-content: flex-start;
        flex-wrap: wrap;
        gap: 8px;
        padding: 8px 0;
    }

    .resource-tab {
        flex-shrink: 0;
        padding: 8px 14px;
        font-size: 13px;
        gap: 4px;
        border-radius: 20px;
    }

    .resource-tab svg {
        width: 14px;
        height: 14px;
    }

    .resource-search {
        margin-bottom: 16px;
    }

    .resource-search input {
        max-width: 100%;
        padding: 8px 14px 8px 36px;
        font-size: 13px;
    }

    .resource-grid {
        grid-template-columns: repeat(2, 1fr);
        gap: 10px;
    }

    .resource-card {
        flex-direction: column;
        padding: 12px 10px;
        gap: 6px;
        border-radius: 10px;
    }

    .resource-card-image {
        width: 56px;
        height: 56px;
        min-width: 56px;
    }

    .resource-card-info h3 {
        font-size: 13px;
    }

    .resource-card-category {
        font-size: 10px;
        padding: 2px 6px;
    }

    .resource-card-actions {
        gap: 4px;
    }

    .btn-resource-download,
    .btn-resource-watch {
        padding: 5px 12px;
        font-size: 11px;
        border-radius: 14px;
    }
}
@media (max-width: 768px) {
    /* 新品展示 - 手机端文案居中，隐藏NEW标识，文字放大上移 */
    .slide-overlay {
        width: 90% !important;
        left: 5% !important;
        align-items: center !important;
        text-align: center !important;
        padding: 5% 10px 0 !important;
    }
    .slide-overlay .slide-tag {
        display: none !important;
    }
    .slide-overlay h3 {
        font-size: clamp(28px, 8vw, 48px) !important;
        white-space: nowrap !important;
        margin-bottom: 12px !important;
    }
    .slide-overlay p {
        font-size: clamp(22px, 5vw, 32px) !important;
    }
}