/* ===== CSS Reset & Base ===== */
* {
    margin: 0;
    padding: 0;
    box-sizing: border-box;
}

:root {
    --primary: #0052D9;
    --primary-dark: #003BB3;
    --secondary: #00A4EF;
    --accent: #FF6B00;
    --dark: #1A1A2E;
    --dark-light: #16213E;
    --gray: #6B7280;
    --gray-light: #9CA3AF;
    --white: #FFFFFF;
    --bg-light: #F8FAFC;
    --gradient-primary: linear-gradient(135deg, #0052D9 0%, #00A4EF 100%);
    --gradient-dark: linear-gradient(135deg, #1A1A2E 0%, #16213E 100%);
    --shadow: 0 10px 40px rgba(0, 82, 217, 0.1);
    --shadow-lg: 0 20px 60px rgba(0, 82, 217, 0.15);
}

html {
    scroll-behavior: smooth;
}

body {
    font-family: 'Noto Sans SC', -apple-system, BlinkMacSystemFont, sans-serif;
    line-height: 1.6;
    color: var(--dark);
    background: var(--white);
    overflow-x: hidden;
}

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

ul {
    list-style: none;
}

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

.container {
    max-width: 1400px;
    margin: 0 auto;
    padding: 0 20px;
}

/* ===== Typography ===== */
h1, h2, h3, h4 {
    font-weight: 700;
    line-height: 1.2;
}

.section {
    padding: 100px 0;
}

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

.section-header.light {
    color: var(--white);
}

.section-header.light p {
    color: rgba(255, 255, 255, 0.8);
}

.section-tag {
    display: inline-block;
    padding: 6px 16px;
    background: var(--gradient-primary);
    color: var(--white);
    font-size: 12px;
    font-weight: 500;
    border-radius: 20px;
    text-transform: uppercase;
    letter-spacing: 1px;
    margin-bottom: 16px;
}

.section-header h2 {
    font-size: 42px;
    margin-bottom: 16px;
    color: var(--dark);
}

.section-header p {
    font-size: 18px;
    color: var(--gray);
}

/* ===== Buttons ===== */
.btn {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    padding: 14px 32px;
    font-size: 16px;
    font-weight: 500;
    border-radius: 8px;
    cursor: pointer;
    transition: all 0.3s ease;
    border: none;
}

.btn-primary {
    background: var(--gradient-primary);
    color: var(--white);
}

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

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

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

.btn-block {
    width: 100%;
}

/* ===== Navigation ===== */
.navbar {
    position: fixed;
    top: 0;
    left: 0;
    right: 0;
    z-index: 1000;
    background: rgba(26, 26, 46, 0.95);
    backdrop-filter: blur(20px);
    padding: 16px 0;
    transition: all 0.3s ease;
}

.navbar.scrolled {
    padding: 12px 0;
    box-shadow: 0 4px 20px rgba(0, 0, 0, 0.1);
}

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

.nav-brand {
    display: flex;
    align-items: center;
    gap: 12px;
}

.logo {
    width: 48px;
    height: 48px;
    background: var(--gradient-primary);
    border-radius: 12px;
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 20px;
    font-weight: 700;
    color: var(--white);
}

.company-name {
    font-size: 18px;
    font-weight: 600;
    color: var(--white);
}

.nav-menu {
    display: flex;
    align-items: center;
    gap: 28px;
}

.nav-menu a {
    color: var(--white);
    font-size: 15px;
    font-weight: 500;
    transition: color 0.3s ease;
    position: relative;
}

.nav-menu a::after {
    content: '';
    position: absolute;
    bottom: -4px;
    left: 0;
    width: 0;
    height: 2px;
    background: var(--secondary);
    transition: width 0.3s ease;
}

.nav-menu a:hover::after {
    width: 100%;
}

.nav-menu .btn-contact {
    background: var(--gradient-primary);
    padding: 10px 24px;
    border-radius: 8px;
}

.nav-menu .btn-contact::after {
    display: none;
}

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

.nav-dropdown-content {
    display: none;
    position: absolute;
    top: 100%;
    left: 0;
    min-width: 160px;
    background: rgba(26, 26, 46, 0.98);
    backdrop-filter: blur(20px);
    border-radius: 12px;
    padding: 10px 0;
    margin-top: 10px;
    box-shadow: 0 10px 40px rgba(0, 0, 0, 0.5);
    border: 1px solid rgba(255, 255, 255, 0.1);
    z-index: 1001;
}

.nav-dropdown-content::before {
    content: '';
    position: absolute;
    top: -6px;
    left: 20px;
    width: 12px;
    height: 12px;
    background: rgba(26, 26, 46, 0.98);
    transform: rotate(45deg);
    border-left: 1px solid rgba(255, 255, 255, 0.1);
    border-top: 1px solid rgba(255, 255, 255, 0.1);
}

.nav-dropdown-content a {
    display: block;
    padding: 12px 20px;
    color: rgba(255, 255, 255, 0.9);
    font-size: 14px;
    transition: all 0.2s ease;
    white-space: nowrap;
}

.nav-dropdown-content a:hover {
    background: rgba(0, 82, 217, 0.3);
    color: #fff;
    padding-left: 25px;
}

.nav-dropdown-content a::after {
    display: none;
}

.nav-dropdown.active .nav-dropdown-content {
    display: block;
}

.nav-dropdown-arrow {
    font-size: 10px;
    margin-left: 4px;
    transition: transform 0.3s ease;
}

.nav-dropdown.active .nav-dropdown-arrow {
    transform: rotate(180deg);
}

.mobile-menu-btn {
    display: none;
    flex-direction: column;
    gap: 5px;
    background: none;
    border: none;
    cursor: pointer;
    padding: 8px;
}

.mobile-menu-btn span {
    width: 24px;
    height: 2px;
    background: var(--white);
    transition: all 0.3s ease;
}

/* ===== Hero Section ===== */
.hero {
    position: relative;
    min-height: 100vh;
    display: flex;
    align-items: center;
    background: var(--gradient-dark);
    overflow: hidden;
}

.hero-bg {
    position: absolute;
    inset: 0;
    background: url('data:image/svg+xml,<svg xmlns="http://www.w3.org/2000/svg" viewBox="0 0 100 100"><circle cx="20" cy="80" r="40" fill="%230052D9" opacity="0.1"/><circle cx="80" cy="20" r="50" fill="%2300A4EF" opacity="0.1"/><circle cx="60" cy="60" r="30" fill="%23FF6B00" opacity="0.05"/></svg>');
    background-size: cover;
}

.hero-overlay {
    position: absolute;
    inset: 0;
    background: linear-gradient(180deg, rgba(26, 26, 46, 0.3) 0%, rgba(26, 26, 46, 0.8) 100%);
}

.hero-content {
    position: relative;
    z-index: 1;
    text-align: center;
    color: var(--white);
    max-width: 900px;
    margin: 0 auto;
    padding: 0 20px;
}

.hero-badge {
    display: inline-block;
    padding: 8px 20px;
    background: rgba(255, 255, 255, 0.1);
    border: 1px solid rgba(255, 255, 255, 0.2);
    border-radius: 30px;
    font-size: 14px;
    margin-bottom: 30px;
    backdrop-filter: blur(10px);
}

.hero h1 {
    font-size: 56px;
    margin-bottom: 20px;
    background: linear-gradient(135deg, var(--white) 0%, var(--secondary) 100%);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
}

.hero-subtitle {
    font-size: 22px;
    color: rgba(255, 255, 255, 0.8);
    margin-bottom: 50px;
}

.hero-stats {
    display: flex;
    justify-content: center;
    gap: 60px;
    margin-bottom: 50px;
}

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

.stat-number {
    display: block;
    font-size: 48px;
    font-weight: 700;
    background: var(--gradient-primary);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
}

.stat-label {
    font-size: 14px;
    color: rgba(255, 255, 255, 0.6);
}

.hero-buttons {
    display: flex;
    justify-content: center;
    gap: 20px;
}

.scroll-indicator {
    position: absolute;
    bottom: 40px;
    left: 50%;
    transform: translateX(-50%);
    display: flex;
    flex-direction: column;
    align-items: center;
    gap: 8px;
    color: rgba(255, 255, 255, 0.5);
    font-size: 12px;
    animation: bounce 2s infinite;
}

@keyframes bounce {
    0%, 100% { transform: translateX(-50%) translateY(0); }
    50% { transform: translateX(-50%) translateY(10px); }
}

/* ===== About Section ===== */
.about {
    background: var(--white);
}

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

.about-content h3 {
    font-size: 28px;
    color: var(--primary);
    margin-bottom: 20px;
}

.about-content > p {
    font-size: 16px;
    color: var(--gray);
    margin-bottom: 40px;
    line-height: 1.8;
}

.about-features {
    display: flex;
    flex-direction: column;
    gap: 24px;
}

.feature-item {
    display: flex;
    gap: 16px;
    padding: 20px;
    background: var(--bg-light);
    border-radius: 12px;
    transition: all 0.3s ease;
}

.feature-item:hover {
    transform: translateX(8px);
    box-shadow: var(--shadow);
}

.feature-icon {
    font-size: 32px;
    width: 56px;
    height: 56px;
    display: flex;
    align-items: center;
    justify-content: center;
    background: var(--gradient-primary);
    border-radius: 12px;
}

.feature-text h4 {
    font-size: 18px;
    color: var(--dark);
    margin-bottom: 8px;
}

.feature-text p {
    font-size: 14px;
    color: var(--gray);
}

.about-image {
    position: relative;
    border-radius: 20px;
    overflow: hidden;
}

.about-image img {
    width: 100%;
    height: auto;
    display: block;
    border-radius: 20px;
}

.image-placeholder {
    width: 100%;
    aspect-ratio: 4/3;
    background: var(--gradient-dark);
    border-radius: 20px;
    display: flex;
    flex-direction: column;
    align-items: center;
    justify-content: center;
    gap: 16px;
    color: var(--white);
}

.placeholder-icon {
    font-size: 80px;
    opacity: 0.5;
}

.image-placeholder p {
    font-size: 16px;
    opacity: 0.7;
}

/* ===== Products Section ===== */
.products {
    background: var(--bg-light);
}

.products-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(220px, 1fr));
    gap: 30px;
}

.product-card {
    background: var(--white);
    padding: 40px 30px;
    border-radius: 16px;
    text-align: center;
    transition: all 0.3s ease;
    border: 1px solid rgba(0, 0, 0, 0.05);
}

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

.product-icon {
    font-size: 56px;
    margin-bottom: 24px;
}

.product-image {
    width: 100%;
    height: 160px;
    display: flex;
    align-items: center;
    justify-content: center;
    margin-bottom: 20px;
    overflow: hidden;
    border-radius: 12px;
    background: var(--bg-light);
}

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

.product-card h3 {
    font-size: 22px;
    color: var(--dark);
    margin-bottom: 12px;
}

.product-card > p {
    font-size: 14px;
    color: var(--gray);
    margin-bottom: 20px;
}

.product-features {
    display: flex;
    flex-wrap: wrap;
    justify-content: center;
    gap: 8px;
}

.product-features li {
    padding: 6px 14px;
    background: var(--bg-light);
    border-radius: 20px;
    font-size: 12px;
    color: var(--primary);
}

/* ===== Quality Section ===== */
.quality {
    background: var(--gradient-dark);
    color: var(--white);
}

.quality-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(200px, 1fr));
    gap: 30px;
}

.quality-card {
    background: rgba(255, 255, 255, 0.05);
    border: 1px solid rgba(255, 255, 255, 0.1);
    padding: 30px 20px;
    border-radius: 16px;
    text-align: center;
    transition: all 0.3s ease;
}

.quality-card:hover {
    background: rgba(255, 255, 255, 0.1);
    transform: translateY(-4px);
}

.quality-icon {
    font-size: 48px;
    margin-bottom: 20px;
}

.quality-image {
    width: 100%;
    height: 120px;
    overflow: hidden;
    border-radius: 12px;
    margin-bottom: 16px;
}

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

.quality-card h4 {
    font-size: 18px;
    margin-bottom: 8px;
}

.quality-card p {
    font-size: 13px;
    color: rgba(255, 255, 255, 0.6);
}

/* ===== Markets Section ===== */
.markets {
    background: var(--white);
}

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

.market-card {
    background: var(--bg-light);
    padding: 40px 30px;
    border-radius: 16px;
    text-align: center;
    transition: all 0.3s ease;
    position: relative;
    overflow: hidden;
}

.market-card::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    height: 4px;
    background: var(--gradient-primary);
    transform: scaleX(0);
    transition: transform 0.3s ease;
}

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

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

.market-icon {
    font-size: 56px;
    margin-bottom: 24px;
}

.market-card h3 {
    font-size: 20px;
    color: var(--dark);
    margin-bottom: 12px;
}

.market-card > p {
    font-size: 14px;
    color: var(--gray);
}

/* ===== News Section ===== */
.news {
    background: var(--bg-light);
}

.news-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
    gap: 30px;
}

.news-card {
    background: var(--white);
    border-radius: 16px;
    overflow: hidden;
    transition: all 0.3s ease;
}

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

.news-image {
    height: 200px;
    background: var(--gradient-dark);
    display: flex;
    align-items: center;
    justify-content: center;
}

.news-image .placeholder-icon {
    font-size: 48px;
    opacity: 0.3;
}

.news-content {
    padding: 24px;
}

.news-date {
    font-size: 12px;
    color: var(--gray);
    margin-bottom: 8px;
}

.news-card h3 {
    font-size: 18px;
    color: var(--dark);
    margin-bottom: 12px;
    line-height: 1.4;
}

.news-card p {
    font-size: 14px;
    color: var(--gray);
    line-height: 1.6;
}

.news-more {
    text-align: center;
    margin-top: 50px;
}

/* ===== Contact Section ===== */
.contact {
    background: var(--gradient-dark);
    color: var(--white);
}

.contact-wrapper {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 80px;
}

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

.contact-item {
    display: flex;
    gap: 20px;
    padding: 24px;
    background: rgba(255, 255, 255, 0.05);
    border-radius: 16px;
    border: 1px solid rgba(255, 255, 255, 0.1);
}

.contact-icon {
    font-size: 40px;
    width: 64px;
    height: 64px;
    display: flex;
    align-items: center;
    justify-content: center;
    background: var(--gradient-primary);
    border-radius: 12px;
}

.contact-details h4 {
    font-size: 16px;
    margin-bottom: 8px;
    color: rgba(255, 255, 255, 0.6);
}

.contact-value {
    font-size: 20px;
    font-weight: 600;
    color: var(--white);
    display: block;
}

.contact-note {
    font-size: 13px;
    color: rgba(255, 255, 255, 0.5);
    margin-top: 4px;
}

.contact-form {
    background: rgba(255, 255, 255, 0.05);
    padding: 40px;
    border-radius: 20px;
    border: 1px solid rgba(255, 255, 255, 0.1);
}

.contact-form h3 {
    font-size: 24px;
    margin-bottom: 30px;
    text-align: center;
}

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

.form-group input,
.form-group select,
.form-group textarea {
    width: 100%;
    padding: 16px 20px;
    background: rgba(255, 255, 255, 0.1);
    border: 1px solid rgba(255, 255, 255, 0.2);
    border-radius: 10px;
    color: var(--white);
    font-size: 15px;
    font-family: inherit;
    transition: all 0.3s ease;
}

.form-group input::placeholder,
.form-group textarea::placeholder {
    color: rgba(255, 255, 255, 0.5);
}

.form-group input:focus,
.form-group select:focus,
.form-group textarea:focus {
    outline: none;
    border-color: var(--secondary);
    background: rgba(255, 255, 255, 0.15);
}

.form-group select option {
    background: var(--dark);
    color: var(--white);
}

.form-note {
    text-align: center;
    margin-top: 20px;
    font-size: 13px;
    color: rgba(255, 255, 255, 0.5);
}

/* ===== Footer ===== */
.footer {
    background: #0F0F1A;
    color: var(--white);
    padding: 80px 0 30px;
}

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

.footer-brand .logo {
    width: 56px;
    height: 56px;
    font-size: 24px;
    margin-bottom: 16px;
}

.footer-brand p {
    color: rgba(255, 255, 255, 0.6);
}

.footer-links h4,
.footer-contact h4,
.footer-social h4 {
    font-size: 16px;
    margin-bottom: 24px;
    color: var(--white);
}

.footer-links ul {
    display: flex;
    flex-direction: column;
    gap: 12px;
}

.footer-links a {
    color: rgba(255, 255, 255, 0.6);
    font-size: 14px;
    transition: color 0.3s ease;
}

.footer-links a:hover {
    color: var(--secondary);
}

.footer-contact p {
    color: rgba(255, 255, 255, 0.6);
    font-size: 14px;
    margin-bottom: 8px;
}

.social-icons {
    display: flex;
    gap: 16px;
}

.social-icons a {
    width: 44px;
    height: 44px;
    background: rgba(255, 255, 255, 0.1);
    border-radius: 10px;
    display: flex;
    align-items: center;
    justify-content: center;
    transition: all 0.3s ease;
}

.social-icons a:hover {
    background: var(--primary);
    transform: translateY(-4px);
}

.social-icons svg {
    width: 20px;
    height: 20px;
}

.footer-bottom {
    border-top: 1px solid rgba(255, 255, 255, 0.1);
    padding-top: 30px;
    text-align: center;
}

.footer-bottom p {
    color: rgba(255, 255, 255, 0.4);
    font-size: 13px;
}

/* ===== Modal ===== */
.modal {
    display: none;
    position: fixed;
    inset: 0;
    background: rgba(0, 0, 0, 0.8);
    z-index: 2000;
    align-items: center;
    justify-content: center;
}

.modal.active {
    display: flex;
}

.modal-content {
    background: var(--white);
    padding: 50px;
    border-radius: 20px;
    text-align: center;
    max-width: 400px;
    width: 90%;
    position: relative;
}

.modal-close {
    position: absolute;
    top: 20px;
    right: 20px;
    width: 36px;
    height: 36px;
    background: var(--bg-light);
    border: none;
    border-radius: 50%;
    font-size: 24px;
    cursor: pointer;
    color: var(--gray);
}

.modal-content h3 {
    font-size: 24px;
    color: var(--dark);
    margin-bottom: 30px;
}

.wechat-qr {
    margin-bottom: 20px;
}

.qr-placeholder {
    width: 200px;
    height: 200px;
    background: var(--bg-light);
    border-radius: 16px;
    margin: 0 auto;
    display: flex;
    flex-direction: column;
    align-items: center;
    justify-content: center;
    gap: 12px;
}

.qr-icon {
    font-size: 64px;
}

.qr-placeholder p {
    font-size: 16px;
    color: var(--dark);
    font-weight: 500;
}

.wechat-note {
    font-size: 14px;
    color: var(--gray);
    margin-bottom: 24px;
}

/* ===== Responsive ===== */
@media (max-width: 992px) {
    .about-grid,
    .contact-wrapper {
        grid-template-columns: 1fr;
        gap: 50px;
    }
    
    .footer-content {
        grid-template-columns: 1fr 1fr;
        gap: 40px;
    }
    
    .hero h1 {
        font-size: 40px;
    }
    
    .hero-stats {
        gap: 40px;
    }
}

@media (max-width: 768px) {
    .nav-menu {
        display: none;
        position: absolute;
        top: 100%;
        left: 0;
        right: 0;
        background: linear-gradient(180deg, rgba(0,30,80,0.98) 0%, rgba(10,20,50,0.98) 100%);
        flex-direction: column;
        padding: 20px;
        gap: 0;
        border-top: 2px solid rgba(0, 164, 239, 0.5);
        box-shadow: 0 10px 40px rgba(0, 0, 0, 0.5);
        animation: slideDown 0.3s ease;
    }
    
    @keyframes slideDown {
        from { opacity: 0; transform: translateY(-10px); }
        to { opacity: 1; transform: translateY(0); }
    }
    
    .nav-menu.active {
        display: flex;
    }
    
    .nav-menu li {
        width: 100%;
    }
    
    .nav-menu a {
        display: block;
        padding: 16px 0;
        border-bottom: 1px solid rgba(255, 255, 255, 0.1);
        font-size: 15px;
        transition: all 0.2s ease;
    }
    
    .nav-menu a:hover {
        color: #00A4EF;
        padding-left: 10px;
    }
    
    .nav-menu a.btn-contact {
        background: linear-gradient(135deg, #0052D9, #00A4EF);
        border: none;
        border-radius: 8px;
        padding: 12px 20px;
        margin-top: 15px;
        text-align: center;
        color: #fff !important;
    }
    
    .mobile-menu-btn {
        display: flex;
    }
    
    .mobile-menu-btn:hover {
        background: rgba(255, 255, 255, 0.1);
        border-radius: 8px;
    }
    
    .hero h1 {
        font-size: 32px;
    }
    
    .hero-subtitle {
        font-size: 18px;
    }
    
    .hero-stats {
        flex-direction: column;
        gap: 30px;
    }
    
    .section {
        padding: 70px 0;
    }
    
    .section-header h2 {
        font-size: 32px;
    }
    
    .footer-content {
        grid-template-columns: 1fr;
        text-align: center;
    }
    
    .social-icons {
        justify-content: center;
    }
}

/* ===== Page Header ===== */
.page-header {
    position: relative;
    padding: 160px 0 80px;
    text-align: center;
    color: var(--white);
    overflow: hidden;
}

.page-header-bg {
    position: absolute;
    inset: 0;
    z-index: 0;
}

.page-header-bg::before {
    content: '';
    position: absolute;
    inset: 0;
    background: url('data:image/svg+xml,<svg xmlns="http://www.w3.org/2000/svg" viewBox="0 0 100 100"><circle cx="20" cy="80" r="40" fill="%230052D9" opacity="0.1"/><circle cx="80" cy="20" r="50" fill="%2300A4EF" opacity="0.1"/></svg>');
    background-size: cover;
}

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

.page-header h1 {
    font-size: 48px;
    margin-bottom: 16px;
    background: linear-gradient(135deg, var(--white) 0%, var(--secondary) 100%);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
}

.page-header p {
    font-size: 20px;
    color: rgba(255, 255, 255, 0.8);
}

/* ===== About Preview ===== */
.about-preview {
    background: var(--white);
}

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

.about-preview-content h2 {
    font-size: 36px;
    color: var(--dark);
    margin-bottom: 20px;
}

.about-preview-content > p {
    font-size: 16px;
    color: var(--gray);
    margin-bottom: 30px;
    line-height: 1.8;
}

.about-preview-features {
    display: flex;
    flex-direction: column;
    gap: 20px;
    margin-bottom: 30px;
}

.preview-feature {
    display: flex;
    gap: 16px;
    align-items: flex-start;
}

.preview-icon {
    font-size: 28px;
    width: 48px;
    height: 48px;
    display: flex;
    align-items: center;
    justify-content: center;
    background: var(--bg-light);
    border-radius: 10px;
}

.preview-feature h4 {
    font-size: 18px;
    color: var(--dark);
    margin-bottom: 4px;
}

.preview-feature p {
    font-size: 14px;
    color: var(--gray);
}

.about-preview-image {
    border-radius: 20px;
    overflow: hidden;
    box-shadow: var(--shadow-lg);
}

.about-preview-image img {
    width: 100%;
    height: auto;
    display: block;
}

/* ===== Products Preview ===== */
.products-preview {
    background: var(--bg-light);
}

.products-preview-grid {
    display: grid;
    grid-template-columns: repeat(5, 1fr);
    gap: 24px;
    margin-bottom: 40px;
}

.preview-product-card {
    background: var(--white);
    border-radius: 16px;
    padding: 20px;
    text-align: center;
    transition: all 0.3s ease;
}

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

.preview-product-image {
    width: 100%;
    height: 120px;
    overflow: hidden;
    border-radius: 12px;
    margin-bottom: 16px;
    background: var(--bg-light);
}

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

.preview-product-card h3 {
    font-size: 16px;
    color: var(--dark);
    margin-bottom: 8px;
}

.preview-product-card > p {
    font-size: 12px;
    color: var(--gray);
}

.products-preview-cta {
    text-align: center;
}

.btn-outline-dark {
    background: transparent;
    color: var(--dark);
    border: 2px solid var(--dark);
    padding: 14px 32px;
    font-size: 16px;
    font-weight: 500;
    border-radius: 8px;
    cursor: pointer;
    transition: all 0.3s ease;
}

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

/* ===== Quality Preview ===== */
.quality-preview {
    background: var(--gradient-dark);
    color: var(--white);
}

.quality-preview-grid {
    display: grid;
    grid-template-columns: repeat(4, 1fr);
    gap: 24px;
    margin-bottom: 40px;
}

.quality-preview-card {
    background: rgba(255, 255, 255, 0.05);
    border-radius: 16px;
    overflow: hidden;
    transition: all 0.3s ease;
}

.quality-preview-card:hover {
    transform: translateY(-4px);
    background: rgba(255, 255, 255, 0.1);
}

.quality-preview-card img {
    width: 100%;
    height: 140px;
    object-fit: cover;
}

.quality-preview-card h4 {
    padding: 16px;
    font-size: 15px;
    text-align: center;
}

.quality-preview-cta {
    text-align: center;
}

/* ===== Contact CTA ===== */
.contact-cta {
    background: var(--bg-light);
    text-align: center;
}

.cta-content h2 {
    font-size: 36px;
    color: var(--dark);
    margin-bottom: 16px;
}

.cta-content > p {
    font-size: 18px;
    color: var(--gray);
    margin-bottom: 30px;
}

.cta-buttons {
    display: flex;
    justify-content: center;
    gap: 20px;
}

.btn-wechat {
    background: #07C160;
    color: var(--white);
    padding: 14px 32px;
    font-size: 16px;
    font-weight: 500;
    border-radius: 8px;
    cursor: pointer;
    border: none;
    transition: all 0.3s ease;
}

.btn-wechat:hover {
    background: #06AD56;
    transform: translateY(-2px);
}

/* ===== Factory Section ===== */
.factory-section {
    background: var(--white);
}

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

.factory-card {
    background: var(--bg-light);
    border-radius: 16px;
    overflow: hidden;
    transition: all 0.3s ease;
}

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

.factory-card img {
    width: 100%;
    height: 200px;
    object-fit: cover;
}

.factory-card h4 {
    padding: 20px;
    font-size: 18px;
    text-align: center;
}

/* ===== Values Section ===== */
.values-section {
    background: var(--bg-light);
}

.values-grid {
    display: grid;
    grid-template-columns: repeat(4, 1fr);
    gap: 30px;
}

.value-card {
    background: var(--white);
    padding: 40px 30px;
    border-radius: 16px;
    text-align: center;
    transition: all 0.3s ease;
}

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

.value-icon {
    font-size: 48px;
    margin-bottom: 20px;
}

.value-card h3 {
    font-size: 20px;
    color: var(--dark);
    margin-bottom: 12px;
}

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

/* ===== Patents Section ===== */
.patents-section {
    background: var(--white);
}

.patents-grid {
    display: grid;
    grid-template-columns: repeat(2, 1fr);
    gap: 40px;
    max-width: 800px;
    margin: 0 auto;
}

.patent-card {
    background: var(--bg-light);
    border-radius: 16px;
    padding: 30px;
    text-align: center;
}

.patent-card img {
    width: 100%;
    max-width: 300px;
    height: auto;
    border-radius: 12px;
    margin-bottom: 16px;
}

.patent-card h4 {
    font-size: 18px;
    color: var(--dark);
}

/* ===== CTA Section ===== */
.cta-section {
    background: var(--gradient-primary);
    color: var(--white);
    text-align: center;
}

.cta-section .cta-content h2 {
    color: var(--white);
}

.cta-section .cta-content p {
    color: rgba(255, 255, 255, 0.9);
}

/* ===== Products List ===== */
.products-list {
    display: flex;
    flex-direction: column;
    gap: 60px;
}

.product-detail-card {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 60px;
    align-items: center;
    background: var(--white);
    padding: 50px;
    border-radius: 24px;
    box-shadow: var(--shadow);
}

.product-detail-card.reverse {
    direction: rtl;
}

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

.product-detail-image {
    border-radius: 16px;
    overflow: hidden;
}

.product-detail-image img {
    width: 100%;
    height: auto;
    display: block;
}

.product-detail-content h2 {
    font-size: 32px;
    color: var(--primary);
    margin-bottom: 12px;
}

.product-summary {
    font-size: 18px;
    color: var(--gray);
    margin-bottom: 30px;
}

.product-specs {
    margin-bottom: 24px;
}

.product-specs h4 {
    font-size: 16px;
    color: var(--dark);
    margin-bottom: 12px;
}

.product-specs ul {
    list-style: disc;
    padding-left: 20px;
}

.product-specs li {
    font-size: 14px;
    color: var(--gray);
    margin-bottom: 8px;
}

/* ===== Equipment Grid ===== */
.quality-equipment {
    background: var(--bg-light);
}

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

.equipment-card {
    background: var(--white);
    border-radius: 16px;
    overflow: hidden;
    transition: all 0.3s ease;
}

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

.equipment-image {
    height: 180px;
    overflow: hidden;
}

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

.equipment-icon-only {
    height: 180px;
    display: flex;
    align-items: center;
    justify-content: center;
    background: var(--gradient-dark);
}

.equipment-icon-only span {
    font-size: 64px;
}

.equipment-info {
    padding: 24px;
}

.equipment-info h3 {
    font-size: 20px;
    color: var(--dark);
    margin-bottom: 8px;
}

.equipment-info p {
    font-size: 14px;
    color: var(--gray);
}

/* ===== Quality Process ===== */
.quality-process {
    background: var(--white);
}

.process-grid {
    display: grid;
    grid-template-columns: repeat(4, 1fr);
    gap: 30px;
}

.process-card {
    text-align: center;
    padding: 30px;
    position: relative;
}

.process-number {
    font-size: 48px;
    font-weight: 700;
    color: var(--primary);
    opacity: 0.2;
    margin-bottom: 16px;
}

.process-card h4 {
    font-size: 18px;
    color: var(--dark);
    margin-bottom: 8px;
}

.process-card p {
    font-size: 14px;
    color: var(--gray);
}

/* ===== News Page ===== */
.news-page {
    background: var(--white);
}

.news-list {
    display: flex;
    flex-direction: column;
    gap: 40px;
}

.news-item {
    display: grid;
    grid-template-columns: 200px 1fr;
    gap: 30px;
    background: var(--bg-light);
    border-radius: 16px;
    overflow: hidden;
    transition: all 0.3s ease;
}

.news-item:hover {
    transform: translateX(8px);
    box-shadow: var(--shadow);
}

.news-item-image {
    height: 150px;
    background: var(--gradient-dark);
    display: flex;
    align-items: center;
    justify-content: center;
}

.news-item-content {
    padding: 24px;
}

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

.news-item h3 {
    font-size: 20px;
    color: var(--dark);
    margin: 8px 0 12px;
}

.news-item p {
    font-size: 14px;
    color: var(--gray);
    margin-bottom: 16px;
}

.news-read-more {
    font-size: 14px;
    color: var(--primary);
    font-weight: 500;
}

/* ===== News Categories ===== */
.news-categories {
    background: var(--bg-light);
}

.category-grid {
    display: grid;
    grid-template-columns: repeat(4, 1fr);
    gap: 30px;
}

.category-card {
    background: var(--white);
    padding: 40px 30px;
    border-radius: 16px;
    text-align: center;
    transition: all 0.3s ease;
}

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

.category-icon {
    font-size: 48px;
    margin-bottom: 16px;
}

.category-card h3 {
    font-size: 18px;
    color: var(--dark);
    margin-bottom: 8px;
}

.category-card p {
    font-size: 13px;
    color: var(--gray);
}

/* ===== Subscribe Section ===== */
.subscribe-section {
    background: var(--gradient-dark);
    color: var(--white);
}

.subscribe-box {
    text-align: center;
    max-width: 600px;
    margin: 0 auto;
}

.subscribe-box h3 {
    font-size: 28px;
    margin-bottom: 12px;
}

.subscribe-box p {
    font-size: 16px;
    color: rgba(255, 255, 255, 0.8);
    margin-bottom: 30px;
}

.subscribe-form {
    display: flex;
    gap: 16px;
}

.subscribe-form input {
    flex: 1;
    padding: 16px 20px;
    border: none;
    border-radius: 8px;
    font-size: 15px;
}

/* ===== Contact Cards ===== */
.contact-cards-grid {
    display: grid;
    grid-template-columns: repeat(4, 1fr);
    gap: 30px;
}

.contact-card {
    background: var(--white);
    padding: 40px 30px;
    border-radius: 16px;
    text-align: center;
    box-shadow: var(--shadow);
    transition: all 0.3s ease;
}

.contact-card:hover {
    transform: translateY(-4px);
}

.contact-card-icon {
    font-size: 48px;
    margin-bottom: 20px;
}

.contact-card h3 {
    font-size: 18px;
    color: var(--dark);
    margin-bottom: 12px;
}

.contact-value {
    font-size: 20px;
    font-weight: 600;
    color: var(--primary);
    display: block;
}

.contact-detail {
    font-size: 14px;
    color: var(--gray);
}

.contact-note {
    font-size: 13px;
    color: var(--gray);
    margin-top: 8px;
}

.btn-sm {
    padding: 10px 20px;
    font-size: 14px;
    margin-top: 12px;
}

/* ===== Contact Main ===== */
.contact-main {
    background: var(--bg-light);
}

.contact-main-grid {
    display: grid;
    grid-template-columns: 1fr 400px;
    gap: 60px;
}

.contact-form-wrapper {
    background: var(--white);
    padding: 50px;
    border-radius: 24px;
    box-shadow: var(--shadow);
}

.contact-form-wrapper h2 {
    font-size: 28px;
    color: var(--dark);
    margin-bottom: 8px;
}

.contact-form-wrapper > p {
    font-size: 14px;
    color: var(--gray);
    margin-bottom: 30px;
}

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

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

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

.form-group input,
.form-group select,
.form-group textarea {
    width: 100%;
    padding: 14px 16px;
    border: 1px solid #E5E7EB;
    border-radius: 8px;
    font-size: 15px;
    transition: all 0.3s ease;
}

.form-group input:focus,
.form-group select:focus,
.form-group textarea:focus {
    outline: none;
    border-color: var(--primary);
    box-shadow: 0 0 0 3px rgba(0, 82, 217, 0.1);
}

.contact-map-wrapper h2 {
    font-size: 28px;
    color: var(--dark);
    margin-bottom: 24px;
}

.map-placeholder {
    background: var(--gradient-dark);
    padding: 40px;
    border-radius: 16px;
    text-align: center;
    color: var(--white);
    margin-bottom: 30px;
}

.map-placeholder p {
    font-size: 16px;
    line-height: 1.6;
}

.contact-wechat-box {
    background: var(--white);
    padding: 30px;
    border-radius: 16px;
    text-align: center;
    box-shadow: var(--shadow);
}

.contact-wechat-box h3 {
    font-size: 20px;
    color: var(--dark);
    margin-bottom: 8px;
}

.contact-wechat-box > p {
    font-size: 14px;
    color: var(--gray);
    margin-bottom: 20px;
}

.wechat-qr-small {
    width: 150px;
    height: 150px;
    margin: 0 auto 16px;
    border-radius: 12px;
    overflow: hidden;
    background: var(--white);
}

.wechat-qr-small img {
    width: 100%;
    height: 100%;
    object-fit: contain;
}

/* ===== Quick Contact ===== */
.quick-contact {
    background: var(--gradient-primary);
    color: var(--white);
    text-align: center;
}

.quick-contact-content h2 {
    font-size: 32px;
    color: var(--white);
    margin-bottom: 12px;
}

.quick-contact-content > p {
    font-size: 18px;
    color: rgba(255, 255, 255, 0.9);
    margin-bottom: 30px;
}

.quick-contact-buttons {
    display: flex;
    justify-content: center;
    gap: 20px;
}

.btn-lg {
    padding: 18px 40px;
    font-size: 18px;
}

/* ===== Article Modal ===== */
.article-modal {
    display: none;
    position: fixed;
    inset: 0;
    background: rgba(0, 0, 0, 0.6);
    z-index: 2000;
    align-items: flex-start;
    justify-content: center;
    padding: 40px 20px;
    overflow-y: auto;
}

.article-modal-content {
    background: white;
    border-radius: 20px;
    max-width: 800px;
    width: 100%;
    max-height: 90vh;
    overflow-y: auto;
    animation: modalSlideIn 0.3s ease;
}

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

.article-modal-header {
    display: flex;
    justify-content: space-between;
    align-items: center;
    padding: 20px 30px;
    border-bottom: 1px solid #eee;
    position: sticky;
    top: 0;
    background: white;
    z-index: 1;
}

.article-modal-category {
    display: inline-block;
    padding: 6px 16px;
    background: var(--gradient-primary);
    color: white;
    font-size: 13px;
    font-weight: 500;
    border-radius: 20px;
}

.article-modal-close {
    width: 40px;
    height: 40px;
    background: var(--bg-light);
    border: none;
    border-radius: 50%;
    font-size: 24px;
    cursor: pointer;
    color: var(--gray);
    transition: all 0.3s;
}

.article-modal-close:hover {
    background: #eee;
    color: var(--dark);
}

.article-modal-body {
    padding: 40px;
}

.article-modal-title {
    font-size: 32px;
    color: var(--dark);
    line-height: 1.4;
    margin-bottom: 16px;
}

.article-modal-meta {
    display: flex;
    gap: 20px;
    font-size: 14px;
    color: var(--gray);
    margin-bottom: 30px;
    padding-bottom: 20px;
    border-bottom: 1px solid #eee;
}

.article-modal-text {
    font-size: 16px;
    color: #444;
    line-height: 2;
}

.article-modal-text p {
    margin-bottom: 16px;
}

.article-modal-contact {
    margin-top: 40px;
    padding: 30px;
    background: var(--bg-light);
    border-radius: 16px;
    text-align: center;
}

.article-modal-contact h3 {
    font-size: 20px;
    color: var(--dark);
    margin-bottom: 12px;
}

.article-modal-contact p {
    font-size: 18px;
    color: var(--primary);
    font-weight: 600;
    margin-bottom: 20px;
}

/* ===== Wechat Modal ===== */
.wechat-qr {
    width: 250px;
    height: 250px;
    margin: 0 auto 20px;
    border-radius: 16px;
    overflow: hidden;
    background: var(--white);
    display: flex;
    align-items: center;
    justify-content: center;
}

.wechat-qr img {
    width: 100%;
    height: 100%;
    object-fit: contain;
}

.wechat-id {
    font-size: 16px;
    font-weight: 600;
    color: var(--dark);
    margin-bottom: 16px;
}

/* ===== Footer Address ===== */
.footer-address {
    font-size: 13px;
    color: rgba(255, 255, 255, 0.5);
    margin-top: 8px;
}

/* ===== Btn Wechat Small ===== */
.btn-wechat-small {
    background: #07C160;
    color: var(--white);
    padding: 12px 24px;
    font-size: 14px;
    font-weight: 500;
    border-radius: 8px;
    cursor: pointer;
    border: none;
    transition: all 0.3s ease;
}

.btn-wechat-small:hover {
    background: #06AD56;
}

/* ===== Responsive ===== */
@media (max-width: 992px) {
    .about-preview-grid,
    .product-detail-card,
    .contact-main-grid {
        grid-template-columns: 1fr;
        gap: 40px;
    }
    
    .product-detail-card.reverse {
        direction: ltr;
    }
    
    .products-preview-grid,
    .quality-preview-grid,
    .values-grid,
    .category-grid,
    .process-grid {
        grid-template-columns: repeat(2, 1fr);
    }
    
    .factory-grid,
    .equipment-grid {
        grid-template-columns: repeat(2, 1fr);
    }
    
    .contact-cards-grid {
        grid-template-columns: repeat(2, 1fr);
    }
    
    .footer-content {
        grid-template-columns: 1fr 1fr;
    }
}

@media (max-width: 768px) {
    .page-header h1 {
        font-size: 36px;
    }
    
    .products-preview-grid,
    .quality-preview-grid,
    .values-grid,
    .factory-grid,
    .equipment-grid,
    .category-grid,
    .process-grid,
    .contact-cards-grid {
        grid-template-columns: 1fr;
    }
    
    .news-item {
        grid-template-columns: 1fr;
    }
    
    .form-row {
        grid-template-columns: 1fr;
    }
    
    .subscribe-form {
        flex-direction: column;
    }
    
    .quick-contact-buttons {
        flex-direction: column;
    }
    
    .cta-buttons {
        flex-direction: column;
    }
    
    .footer-content {
        grid-template-columns: 1fr;
        text-align: center;
    }
    
    .footer-links ul {
        align-items: center;
    }
}

/* ===== Article Modal ===== */
.article-modal {
    display: none;
    position: fixed;
    inset: 0;
    background: rgba(0, 0, 0, 0.6);
    z-index: 2000;
    align-items: flex-start;
    justify-content: center;
    padding: 40px 20px;
    overflow-y: auto;
}

.article-modal-content {
    background: white;
    border-radius: 20px;
    max-width: 800px;
    width: 100%;
    max-height: 90vh;
    overflow-y: auto;
    animation: modalSlideIn 0.3s ease;
}

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

.article-modal-header {
    display: flex;
    justify-content: space-between;
    align-items: center;
    padding: 20px 30px;
    border-bottom: 1px solid #eee;
    position: sticky;
    top: 0;
    background: white;
    z-index: 1;
}

.article-modal-category {
    display: inline-block;
    padding: 6px 16px;
    background: var(--gradient-primary);
    color: white;
    font-size: 13px;
    font-weight: 500;
    border-radius: 20px;
}

.article-modal-close {
    width: 40px;
    height: 40px;
    background: var(--bg-light);
    border: none;
    border-radius: 50%;
    font-size: 24px;
    cursor: pointer;
    color: var(--gray);
    transition: all 0.3s;
}

.article-modal-close:hover {
    background: #eee;
    color: var(--dark);
}

.article-modal-body {
    padding: 40px;
}

.article-modal-title {
    font-size: 32px;
    color: var(--dark);
    line-height: 1.4;
    margin-bottom: 16px;
}

.article-modal-meta {
    display: flex;
    gap: 20px;
    font-size: 14px;
    color: var(--gray);
    margin-bottom: 30px;
    padding-bottom: 20px;
    border-bottom: 1px solid #eee;
}

.article-modal-text {
    font-size: 16px;
    color: #444;
    line-height: 2;
}

.article-modal-text p {
    margin-bottom: 16px;
}

.article-modal-contact {
    margin-top: 40px;
    padding: 30px;
    background: var(--bg-light);
    border-radius: 16px;
    text-align: center;
}

.article-modal-contact h3 {
    font-size: 20px;
    color: var(--dark);
    margin-bottom: 12px;
}

.article-modal-contact p {
    font-size: 18px;
    color: var(--primary);
    font-weight: 600;
    margin-bottom: 20px;
}

@media (max-width: 768px) {
    .article-modal {
        padding: 20px 10px;
    }
    
    .article-modal-body {
        padding: 24px;
    }
    
    .article-modal-title {
        font-size: 24px;
    }
}

/* Language Toggle Button */
.lang-btn {
    padding: 6px 14px;
    border: 1px solid rgba(255,255,255,0.5);
    background: transparent;
    color: white;
    border-radius: 20px;
    cursor: pointer;
    font-size: 13px;
    font-weight: 500;
    transition: all 0.3s;
    text-decoration: none;
}

.lang-btn:hover {
    background: rgba(255,255,255,0.2);
}

.navbar .lang-btn {
    display: inline-block;
}