:root {
    --primary: #1a2341;
    --primary-light: #2a4080;
    --primary-mid: #3a5099;
    --accent: #4a6ab0;
    --text-dark: #333;
    --text-gray: #666;
    --text-light: #999;
    --bg-white: #fff;
    --bg-light: #f5f7fa;
    --bg-gray: #e8edf2;
    --border: #ddd;
    --font: 'Noto Sans SC', 'Inter', -apple-system, sans-serif;
    --transition: .3s ease;
}

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

body {
    font-family: var(--font);
    color: var(--text-dark);
    line-height: 1.6;
    background: var(--bg-white)
}

.container {
    width: 90%;
    max-width: 1200px;
    margin: 0 auto
}

a {
    text-decoration: none;
    color: inherit
}

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

ul {
    list-style: none
}

/* Buttons */
.btn {
    display: inline-block;
    padding: .7rem 2rem;
    color: #fff;
    border-radius: 4px;
    font-weight: 500;
    transition: var(--transition);
    border: none;
    cursor: pointer;
    font-size: .95rem
}

.btn-primary {
    background: var(--primary-light)
}

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

.btn-outline {
    border: 1px solid var(--primary-light);
    color: var(--primary-light);
    background: transparent;
    padding: .6rem 1.8rem
}

.btn-outline:hover {
    background: var(--primary-light);
    color: #fff
}

.btn-link {
    color: var(--text-gray);
    font-size: .9rem;
    transition: var(--transition)
}

.btn-link:hover {
    color: var(--primary-light)
}

/* Top Bar */
.top-bar {
    background: var(--primary);
    color: rgba(255, 255, 255, .8);
    font-size: .8rem;
    padding: .4rem 0
}

.top-bar-inner {
    display: flex;
    justify-content: space-between;
    align-items: center
}

.top-bar-right {
    display: flex;
    align-items: center;
    gap: 1rem
}

.lang-link {
    color: rgba(255, 255, 255, .6);
    padding: 0 .4rem;
    transition: var(--transition)
}

.lang-link.active,
.lang-link:hover {
    color: #fff
}

.alibaba-link {
    color: rgba(255, 255, 255, .8);
    padding: .2rem .8rem;
    border: 1px solid rgba(255, 255, 255, .3);
    border-radius: 3px;
    font-size: .75rem
}

.alibaba-link:hover {
    background: rgba(255, 255, 255, .1)
}

/* Header */
.site-header {
    position: sticky;
    top: 0;
    width: 100%;
    background: var(--bg-white);
    box-shadow: 0 2px 10px rgba(0, 0, 0, .08);
    z-index: 1000;
    padding: .6rem 0
}

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

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

.logo-icon {
    width: 42px;
    height: 42px;
    display: flex;
    align-items: center;
    justify-content: center
}

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

.logo-text {
    display: flex;
    flex-direction: column
}

.company-name {
    font-size: 1.1rem;
    font-weight: 700;
    color: var(--primary)
}

.company-tagline {
    font-size: .6rem;
    color: var(--text-light);
    letter-spacing: 1px
}

.main-nav ul {
    display: flex;
    list-style: none;
    gap: 0;
    align-items: center
}

.main-nav>ul>li>a {
    color: var(--text-dark);
    font-weight: 500;
    transition: var(--transition);
    padding: .8rem 1rem;
    display: block;
    font-size: .9rem
}

.main-nav>ul>li>a:hover,
.main-nav>ul>li>a.active {
    color: var(--primary-light)
}

.has-dropdown {
    position: relative
}

.dropdown {
    position: absolute;
    top: 100%;
    left: 0;
    background: var(--bg-white);
    box-shadow: 0 4px 16px rgba(0, 0, 0, .1);
    min-width: 180px;
    opacity: 0;
    visibility: hidden;
    transform: translateY(-8px);
    transition: var(--transition);
    padding: .3rem 0;
    border-top: 2px solid var(--primary-light);
    z-index: 100
}

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

.dropdown li a {
    display: block;
    padding: .6rem 1.2rem;
    font-size: .85rem;
    color: var(--text-gray);
    transition: var(--transition)
}

.dropdown li a:hover {
    background: var(--bg-light);
    color: var(--primary-light)
}

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

.mobile-menu-toggle span {
    width: 24px;
    height: 2px;
    background: var(--text-dark);
    transition: var(--transition)
}

/* Hero */
.hero-slider {
    margin-top: 0;
    height: 500px;
    position: relative;
    overflow: hidden
}

.hero-slide {
    height: 100%;
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    opacity: 0;
    transition: opacity .8s ease
}

.hero-slide.active {
    opacity: 1;
    position: relative
}

.hero-bg {
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background-size: cover;
    background-position: center
}

.hero-bg-1 {
    background: url('../images/hero-1.jpg') center/cover
}

.hero-bg-2 {
    background: url('../images/hero-2.jpg') center/cover
}

.hero-bg-1::before,
.hero-bg-2::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background: url("data:image/svg+xml,%3Csvg width='200' height='200' xmlns='http://www.w3.org/2000/svg'%3E%3Cpath d='M20 80h160M80 20v160M40 40l120 120M160 40L40 160' stroke='%23ffffff08' fill='none' stroke-width='1'/%3E%3Ccircle cx='80' cy='80' r='3' fill='%2300aaff15'/%3E%3Ccircle cx='140' cy='60' r='2' fill='%2300aaff10'/%3E%3Ccircle cx='40' cy='140' r='2' fill='%2300aaff10'/%3E%3C/svg%3E");
    opacity: .6
}

.hero-content {
    position: relative;
    z-index: 2;
    height: 100%;
    display: flex;
    flex-direction: column;
    justify-content: center;
    color: #fff
}

.hero-title {
    font-size: 3rem;
    margin-bottom: 1rem;
    font-weight: 700;
    letter-spacing: 2px
}

.hero-subtitle {
    font-size: 1.15rem;
    margin-bottom: 2rem;
    max-width: 550px;
    opacity: .85
}

.hero-dots {
    position: absolute;
    bottom: 20px;
    left: 50%;
    transform: translateX(-50%);
    display: flex;
    gap: 8px;
    z-index: 3
}

.dot {
    width: 10px;
    height: 10px;
    border-radius: 50%;
    background: rgba(255, 255, 255, .4);
    cursor: pointer;
    transition: var(--transition)
}

.dot.active {
    background: #fff;
    width: 28px;
    border-radius: 5px
}

/* Product Categories */
.product-categories {
    padding: 3rem 0;
    background: var(--bg-white);
    border-bottom: 1px solid var(--bg-gray)
}

.category-grid {
    display: grid;
    grid-template-columns: repeat(6, 1fr);
    gap: 1rem
}

.category-card {
    padding: 1.5rem 1rem;
    text-align: center;
    transition: var(--transition);
    border-bottom: 2px solid transparent
}

.category-card:hover {
    border-bottom-color: var(--primary-light)
}

.category-card:hover .category-icon {
    color: var(--primary-light)
}

.category-icon {
    width: 50px;
    height: 50px;
    margin: 0 auto 1rem;
    color: var(--primary);
    transition: var(--transition)
}

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

.category-card h3 {
    font-size: .95rem;
    margin-bottom: .3rem;
    color: var(--text-dark);
    font-weight: 500
}

.category-card p {
    font-size: .75rem;
    color: var(--text-light)
}

/* About */
.about-section {
    padding: 5rem 0;
    background: var(--bg-white)
}

.about-content {
    display: grid;
    grid-template-columns: 1fr 1.2fr;
    gap: 3rem;
    align-items: start
}

.about-img-placeholder {
    width: 100%;
    height: 350px;
    background: linear-gradient(135deg, #e8ecf2, #d0d8e4);
    border-radius: 4px;
    display: flex;
    align-items: center;
    justify-content: center;
    position: relative;
    overflow: hidden
}

.about-img-placeholder::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    background: linear-gradient(180deg, rgba(255, 255, 255, .1) 0%, transparent 40%)
}

.placeholder-logo {
    font-size: 1.2rem;
    color: var(--primary);
    font-weight: 600;
    background: rgba(255, 255, 255, .8);
    padding: .8rem 1.5rem;
    border-radius: 4px
}

.about-eng {
    font-size: 1.8rem;
    font-weight: 700;
    color: var(--text-dark);
    margin-bottom: .5rem;
    letter-spacing: 2px
}

.about-title {
    font-size: 1.3rem;
    color: var(--text-dark);
    margin-bottom: 1.5rem;
    font-weight: 500
}

.about-text p {
    margin-bottom: 1rem;
    color: var(--text-gray);
    line-height: 1.9;
    font-size: .92rem;
    text-indent: 2em
}

.about-text .btn {
    margin-top: .5rem
}

/* Section Headers */
.section-header {
    margin-bottom: 2.5rem;
    position: relative
}

.section-header.center {
    text-align: center
}

.section-title {
    font-size: 2rem;
    color: var(--text-dark);
    font-weight: 700;
    position: relative;
    display: inline-block
}

.section-header.center .section-title::before,
.section-header.center .section-title::after {
    content: '';
    position: absolute;
    top: 50%;
    height: 1px;
    width: 80px;
    background: var(--border)
}

.section-header.center .section-title::before {
    right: calc(100% + 15px)
}

.section-header.center .section-title::after {
    left: calc(100% + 15px)
}

.section-label {
    color: var(--text-light);
    font-size: .8rem;
    letter-spacing: 3px;
    display: block;
    margin-top: .3rem;
    text-transform: uppercase
}

/* Products Slider */
.products-section {
    padding: 5rem 0;
    background: var(--bg-light)
}

.products-slider-wrap {
    position: relative;
    overflow: hidden
}

.products-slider {
    display: flex;
    gap: 1.5rem;
    transition: transform .5s ease;
    padding: 1rem 0
}

.product-card-lg {
    min-width: calc(50% - .75rem);
    flex-shrink: 0
}

.product-img-lg {
    height: 300px;
    border-radius: 6px;
    display: flex;
    align-items: flex-start;
    justify-content: flex-start;
    padding: 2rem;
    position: relative;
    overflow: hidden
}

.product-img-lg span {
    color: #fff;
    font-size: 1.4rem;
    font-weight: 600;
    position: relative;
    z-index: 2;
    text-shadow: 0 2px 8px rgba(0, 0, 0, .5)
}

.chip-bg-1 {
    background: url('../images/product-1.jpg') center/cover
}

.chip-bg-2 {
    background: url('../images/product-2.jpg') center/cover
}

.chip-bg-3 {
    background: url('../images/product-3.jpg') center/cover
}

.chip-bg-1::after,
.chip-bg-2::after,
.chip-bg-3::after {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background: url("data:image/svg+xml,%3Csvg width='300' height='300' xmlns='http://www.w3.org/2000/svg'%3E%3Crect x='100' y='80' width='100' height='100' rx='5' fill='none' stroke='%2300ccff15' stroke-width='2'/%3E%3Crect x='120' y='100' width='60' height='60' fill='%2300ccff08'/%3E%3Cline x1='0' y1='130' x2='100' y2='130' stroke='%2300aaff08' stroke-width='1'/%3E%3Cline x1='200' y1='130' x2='300' y2='130' stroke='%2300aaff08' stroke-width='1'/%3E%3Cline x1='150' y1='0' x2='150' y2='80' stroke='%2300aaff08' stroke-width='1'/%3E%3Cline x1='150' y1='180' x2='150' y2='300' stroke='%2300aaff08' stroke-width='1'/%3E%3Ccircle cx='150' cy='130' r='15' fill='%2300ccff06' stroke='%2300ccff15' stroke-width='1'/%3E%3C/svg%3E");
    opacity: .8
}

.slider-arrow {
    position: absolute;
    top: 50%;
    transform: translateY(-50%);
    background: rgba(0, 0, 0, .4);
    color: #fff;
    border: none;
    width: 40px;
    height: 40px;
    border-radius: 50%;
    cursor: pointer;
    font-size: 1.2rem;
    z-index: 5;
    transition: var(--transition);
    display: flex;
    align-items: center;
    justify-content: center
}

.slider-arrow:hover {
    background: var(--primary-light)
}

.slider-prev {
    left: 10px
}

.slider-next {
    right: 10px
}

/* Solutions */
.solutions-section {
    padding: 5rem 0;
    background: var(--bg-white)
}

.solution-tabs {
    display: flex;
    border-bottom: 2px solid var(--primary);
    margin-bottom: 0
}

.sol-tab {
    flex: 1;
    padding: 1rem;
    text-align: center;
    background: transparent;
    border: none;
    cursor: pointer;
    font-size: .95rem;
    font-weight: 500;
    color: var(--text-gray);
    transition: var(--transition);
    font-family: var(--font)
}

.sol-tab.active {
    background: var(--primary);
    color: #fff
}

.sol-tab:hover:not(.active) {
    background: var(--bg-light)
}

.solution-panels {
    position: relative
}

.solution-panel {
    display: none;
    grid-template-columns: 1.2fr 1fr;
    background: var(--bg-light)
}

.solution-panel.active {
    display: grid
}

.sol-placeholder {
    height: 400px
}

.sol-bg-1 {
    background: url('../images/about.jpg') center/cover
}

.sol-bg-2 {
    background: url('../images/about-2.jpg') center/cover
}

.sol-bg-3 {
    background: url('../images/about-3.jpg') center/cover
}

.solution-info {
    padding: 3rem 2.5rem;
    display: flex;
    flex-direction: column;
    justify-content: center
}

.solution-info h3 {
    font-size: 1.5rem;
    color: var(--text-dark);
    margin-bottom: .5rem
}

.sol-eng {
    font-size: .85rem;
    color: var(--text-light);
    margin-bottom: 1rem
}

.solution-info hr {
    border: none;
    border-top: 1px solid var(--border);
    margin-bottom: 1.5rem
}

.solution-info>p {
    color: var(--text-gray);
    line-height: 1.8;
    margin-bottom: 1.5rem;
    font-size: .9rem
}

.sol-arrows {
    display: flex;
    gap: .8rem;
    margin-top: 1rem
}

.sol-arrow-btn {
    width: 40px;
    height: 40px;
    border-radius: 50%;
    border: none;
    background: var(--primary);
    color: #fff;
    cursor: pointer;
    font-size: 1rem;
    display: flex;
    align-items: center;
    justify-content: center;
    transition: var(--transition)
}

.sol-arrow-btn:hover {
    background: var(--primary-light)
}

/* Exhibition Slider */
.exhibition-section {
    padding: 3rem 0;
    background: var(--bg-white);
    overflow: hidden
}

.exhibition-slider-wrap {
    overflow: hidden;
    position: relative
}

.exhibition-slider {
    display: flex;
    gap: 1.5rem;
    transition: transform .5s ease;
    padding: 0 5%
}

.exhibit-card {
    min-width: calc(33.333% - 1rem);
    flex-shrink: 0;
    border-radius: 4px;
    overflow: hidden;
    box-shadow: 0 2px 8px rgba(0, 0, 0, .08)
}

.exhibit-img {
    height: 200px
}

.exhibit-bg-1 {
    background: url('../images/exhibit-1.jpg') center/cover
}

.exhibit-bg-2 {
    background: url('../images/exhibit-2.jpg') center/cover
}

.exhibit-bg-3 {
    background: url('../images/exhibit-3.jpg') center/cover
}

.exhibit-info {
    display: flex;
    justify-content: space-between;
    align-items: center;
    padding: .8rem 1.2rem;
    background: var(--bg-white)
}

.exhibit-info span {
    color: var(--text-gray);
    font-size: .9rem
}

.exhibit-info a {
    color: var(--text-dark);
    font-weight: 700;
    font-size: .9rem;
    letter-spacing: 1px
}

/* Advantages */
.advantages-section {
    padding: 5rem 0;
    background: var(--bg-light)
}

.advantage-tabs {
    display: flex;
    max-width: 800px;
    margin: 0 auto 2rem;
    border-radius: 30px;
    overflow: hidden;
    border: 1px solid var(--border);
    background: var(--bg-white)
}

.adv-tab {
    flex: 1;
    padding: 1rem;
    text-align: center;
    background: transparent;
    border: none;
    cursor: pointer;
    font-size: .9rem;
    font-weight: 500;
    color: var(--text-gray);
    transition: var(--transition);
    font-family: var(--font);
    display: flex;
    align-items: center;
    justify-content: center;
    gap: .5rem
}

.adv-tab.active {
    background: var(--primary);
    color: #fff;
    border-radius: 30px
}

.adv-tab:hover:not(.active) {
    background: var(--bg-gray)
}

.adv-tab svg {
    flex-shrink: 0
}

.adv-panel {
    display: none;
    grid-template-columns: 1.2fr 1fr;
    gap: 2rem;
    align-items: start
}

.adv-panel.active {
    display: grid
}

.adv-images {
    display: grid;
    grid-template-columns: 1.2fr 1fr;
    grid-template-rows: 1fr 1fr;
    gap: .8rem
}

.adv-img-placeholder {
    border-radius: 4px;
    min-height: 150px
}

.adv-images .adv-img-placeholder:first-child {
    grid-row: 1/3
}

.adv-bg-1 {
    background: url('../images/company-1.jpg') center/cover
}

.adv-bg-2 {
    background: url('../images/company-2.jpg') center/cover
}

.adv-bg-3 {
    background: url('../images/about.jpg') center/cover
}

.adv-info {
    padding: 1rem 0
}

.adv-info h3 {
    font-size: 1.6rem;
    color: var(--text-dark);
    margin-bottom: .5rem;
    font-weight: 700;
    font-style: italic
}

.adv-subtitle {
    color: var(--text-light);
    font-size: .9rem;
    margin-bottom: 1rem
}

.adv-info hr {
    border: none;
    border-top: 1px solid var(--border);
    margin-bottom: 1.5rem
}

.adv-info ul {
    list-style: none
}

.adv-info li {
    padding: .6rem 0;
    color: var(--text-gray);
    font-size: .9rem;
    line-height: 1.7;
    position: relative;
    padding-left: 0
}

/* Cases */
.cases-section {
    padding: 5rem 0;
    background: var(--bg-white)
}

.cases-grid {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: 1.5rem
}

.case-card {
    border-radius: 6px;
    overflow: hidden;
    box-shadow: 0 2px 10px rgba(0, 0, 0, .06);
    transition: var(--transition)
}

.case-card:hover {
    transform: translateY(-4px);
    box-shadow: 0 8px 24px rgba(0, 0, 0, .12)
}

.case-img {
    height: 220px
}

.case-bg-1 {
    background: url('../images/case-1.jpg') center/cover
}

.case-bg-2 {
    background: url('../images/case-2.jpg') center/cover
}

.case-bg-3 {
    background: url('../images/case-3.jpg') center/cover
}

.case-bottom {
    display: flex;
    justify-content: space-between;
    align-items: center;
    padding: 1rem 1.2rem;
    background: var(--bg-white)
}

.case-bottom span {
    color: var(--text-gray);
    font-size: .9rem
}

.case-bottom a {
    color: var(--text-dark);
    font-weight: 700;
    letter-spacing: 1px
}

/* Process */
.process-section {
    padding: 3rem 0 2rem;
    background: linear-gradient(135deg, #0a1628, #1a2d50, #0d2040);
    color: #fff;
    position: relative;
    overflow: hidden
}

.process-section::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background: url("data:image/svg+xml,%3Csvg width='200' height='200' xmlns='http://www.w3.org/2000/svg'%3E%3Crect x='60' y='60' width='80' height='80' fill='none' stroke='%23ffffff06' stroke-width='1'/%3E%3Ccircle cx='100' cy='100' r='5' fill='%2300aaff08'/%3E%3C/svg%3E")
}

.process-grid {
    display: grid;
    grid-template-columns: repeat(6, 1fr);
    gap: 1rem;
    position: relative;
    z-index: 2;
    margin-bottom: 2rem
}

.process-step {
    text-align: center;
    padding: 1.5rem 1rem;
    border: 1px solid rgba(255, 255, 255, .15);
    border-radius: 6px;
    transition: var(--transition)
}

.process-step:hover {
    border-color: rgba(255, 255, 255, .4);
    background: rgba(255, 255, 255, .05)
}

.process-icon {
    margin: 0 auto .8rem;
    opacity: .7
}

.process-num {
    font-size: 2.5rem;
    font-weight: 700;
    margin-bottom: .3rem;
    opacity: .9
}

.process-text {
    font-size: .85rem;
    opacity: .8;
    letter-spacing: 1px
}

.hotline {
    text-align: center;
    padding: 1.5rem;
    position: relative;
    z-index: 2;
    display: flex;
    align-items: center;
    justify-content: center;
    gap: .8rem;
    font-size: 1rem;
    opacity: .9
}

.hotline strong {
    font-size: 1.8rem;
    letter-spacing: 3px
}

/* News */
.news-section {
    padding: 5rem 0;
    background: var(--bg-light)
}

.news-grid {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: 2rem
}

.news-col-header {
    display: flex;
    justify-content: space-between;
    align-items: center;
    margin-bottom: 1.5rem;
    border-bottom: 2px solid var(--primary);
    padding-bottom: .8rem
}

.news-col-header h3 {
    font-size: 1.2rem;
    color: var(--text-dark)
}

.news-col-header a {
    color: var(--text-gray);
    font-size: .85rem;
    font-weight: 600
}

.news-featured {
    margin-bottom: 1rem
}

.news-thumb {
    height: 180px;
    border-radius: 4px;
    margin-bottom: 1rem
}

.news-thumb-1 {
    background: url('../images/news-1.jpg') center/cover
}

.news-thumb-2 {
    background: url('../images/news-2.jpg') center/cover
}

.news-featured h4 {
    font-size: 1rem;
    color: var(--text-dark);
    margin-bottom: .5rem;
    font-weight: 600
}

.news-featured p {
    font-size: .85rem;
    color: var(--text-gray);
    line-height: 1.6;
    margin-bottom: .5rem
}

.news-featured a {
    color: var(--primary-light);
    font-size: .85rem
}

.news-list {
    border-top: 1px solid var(--border)
}

.news-list li {
    padding: .8rem 0;
    border-bottom: 1px solid var(--bg-gray);
    display: flex;
    justify-content: space-between;
    align-items: center;
    gap: 1rem
}

.news-list li a {
    font-size: .85rem;
    color: var(--text-gray);
    flex: 1;
    overflow: hidden;
    text-overflow: ellipsis;
    white-space: nowrap;
    transition: var(--transition);
    position: relative;
    padding-left: 1rem
}

.news-list li a::before {
    content: '○';
    position: absolute;
    left: 0;
    top: 50%;
    transform: translateY(-50%);
    font-size: .5rem;
    color: var(--text-light)
}

.news-list li a:hover {
    color: var(--primary-light)
}

.news-list li span {
    font-size: .75rem;
    color: var(--text-light);
    flex-shrink: 0
}

.company-news li a {
    padding-right: 1.5rem
}

.company-news li::after {
    content: '›';
    color: var(--text-light);
    font-size: 1.2rem
}

/* Footer */
.site-footer {
    background: var(--primary);
    color: rgba(255, 255, 255, .8);
    padding: 3rem 0 0
}

.footer-top {
    display: grid;
    grid-template-columns: 1.5fr 1fr 1fr 1fr;
    gap: 2rem;
    padding-bottom: 2rem
}

.footer-top h4 {
    color: #fff;
    margin-bottom: 1rem;
    font-size: 1rem;
    position: relative;
    padding-bottom: .5rem
}

.footer-top h4::after {
    content: '';
    position: absolute;
    bottom: 0;
    left: 0;
    width: 30px;
    height: 2px;
    background: var(--accent)
}

.footer-eng {
    font-size: .75rem;
    color: rgba(255, 255, 255, .4);
    margin-bottom: .8rem
}

.footer-about p {
    font-size: .85rem;
    line-height: 1.7;
    color: rgba(255, 255, 255, .6)
}

.footer-nav ul li {
    margin-bottom: .5rem
}

.footer-nav a {
    color: rgba(255, 255, 255, .6);
    font-size: .85rem;
    transition: var(--transition)
}

.footer-nav a:hover {
    color: #fff
}

.footer-gallery-grid {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: .5rem
}

.fg-item {
    height: 60px;
    border-radius: 3px;
    background: rgba(255, 255, 255, .1)
}

.footer-contact .contact-details {
    margin-top: .8rem
}

.footer-contact .contact-details p {
    font-size: .8rem;
    margin-bottom: .4rem;
    color: rgba(255, 255, 255, .6)
}

.footer-contact .contact-details strong {
    color: rgba(255, 255, 255, .5);
    margin-right: .5rem;
    font-size: .7rem
}

.qr-placeholder {
    width: 80px;
    height: 80px;
    background: rgba(255, 255, 255, .1);
    border-radius: 4px;
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: .7rem;
    color: rgba(255, 255, 255, .4);
    border: 1px solid rgba(255, 255, 255, .1)
}

.footer-bottom {
    text-align: center;
    padding: 1.2rem 0;
    border-top: 1px solid rgba(255, 255, 255, .1);
    color: rgba(255, 255, 255, .4);
    font-size: .8rem
}

/* Back to Top */
.back-to-top {
    position: fixed;
    bottom: 100px;
    right: 20px;
    width: 50px;
    background: var(--primary);
    color: #fff;
    display: flex;
    flex-direction: column;
    align-items: center;
    justify-content: center;
    padding: .6rem .5rem;
    border-radius: 4px;
    font-size: .65rem;
    opacity: 0;
    visibility: hidden;
    transition: var(--transition);
    z-index: 999;
    gap: 2px
}

.back-to-top.visible {
    opacity: 1;
    visibility: visible
}

.back-to-top:hover {
    background: var(--primary-light)
}

/* Mobile Bottom Bar */
.mobile-bottom-bar {
    display: none;
    position: fixed;
    bottom: 0;
    left: 0;
    right: 0;
    background: var(--primary);
    z-index: 1000
}

.mobile-bottom-bar a {
    flex: 1;
    display: flex;
    flex-direction: column;
    align-items: center;
    justify-content: center;
    padding: .6rem .3rem;
    color: rgba(255, 255, 255, .8);
    font-size: .65rem;
    gap: 2px;
    transition: var(--transition)
}

.mobile-bottom-bar a:hover {
    background: rgba(255, 255, 255, .1)
}

.mobile-bottom-bar svg {
    stroke: rgba(255, 255, 255, .8)
}

/* Responsive */
@media(max-width:1024px) {
    .category-grid {
        grid-template-columns: repeat(3, 1fr)
    }

    .process-grid {
        grid-template-columns: repeat(3, 1fr)
    }

    .news-grid {
        grid-template-columns: 1fr
    }

    .footer-top {
        grid-template-columns: 1fr 1fr
    }

    .product-card-lg {
        min-width: calc(50% - .75rem)
    }

    .exhibit-card {
        min-width: calc(50% - .75rem)
    }
}

@media(max-width:768px) {
    .top-bar .welcome {
        display: none
    }

    .main-nav {
        position: fixed;
        top: 0;
        right: -100%;
        width: 75%;
        height: 100vh;
        background: var(--bg-white);
        padding: 4rem 1.5rem;
        box-shadow: -5px 0 15px rgba(0, 0, 0, .1);
        transition: var(--transition);
        overflow-y: auto;
        z-index: 1001
    }

    .main-nav.active {
        right: 0
    }

    .main-nav ul {
        flex-direction: column;
        gap: 0
    }

    .main-nav>ul>li>a {
        padding: 1rem 0;
        border-bottom: 1px solid var(--bg-gray)
    }

    .dropdown {
        position: static;
        box-shadow: none;
        opacity: 1;
        visibility: visible;
        transform: none;
        border-top: none;
        padding-left: 1rem;
        display: none
    }

    .has-dropdown.open .dropdown {
        display: block
    }

    .mobile-menu-toggle {
        display: flex
    }

    .hero-slider {
        height: 350px
    }

    .hero-title {
        font-size: 2rem
    }

    .hero-subtitle {
        font-size: .95rem
    }

    .category-grid {
        grid-template-columns: repeat(3, 1fr);
        gap: .5rem
    }

    .category-card {
        padding: 1rem .5rem
    }

    .about-content {
        grid-template-columns: 1fr;
        gap: 2rem
    }

    .product-card-lg {
        min-width: calc(100% - 0rem)
    }

    .solution-tabs {
        flex-wrap: wrap
    }

    .sol-tab {
        flex: none;
        width: 50%;
        font-size: .8rem
    }

    .solution-panel.active {
        grid-template-columns: 1fr
    }

    .exhibit-card {
        min-width: calc(80% - .75rem)
    }

    .advantage-tabs {
        flex-wrap: wrap;
        border-radius: 8px
    }

    .adv-tab {
        width: 50%;
        border-radius: 0
    }

    .adv-panel.active {
        grid-template-columns: 1fr
    }

    .cases-grid {
        grid-template-columns: 1fr 1fr
    }

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

    .footer-top {
        grid-template-columns: 1fr
    }

    .mobile-bottom-bar {
        display: flex
    }

    body {
        padding-bottom: 60px
    }

    .back-to-top {
        bottom: 80px
    }
}

@media(max-width:480px) {
    .category-grid {
        grid-template-columns: repeat(2, 1fr)
    }

    .cases-grid {
        grid-template-columns: 1fr
    }

    .sol-tab {
        width: 50%;
        padding: .7rem .5rem;
        font-size: .75rem
    }
}