/* Singear Website Styles */

:root {
    --primary: #1e3a8a;
    --primary-light: #3b82f6;
    --primary-dark: #1e40af;
    --secondary: #e94560;
    --accent: #f59e0b;
    --white: #ffffff;
    --black: #1a1a2e;
    --gray-100: #f8f9fa;
    --gray-200: #e9ecef;
    --gray-300: #dee2e6;
    --gray-400: #ced4da;
    --gray-500: #adb5bd;
    --gray-600: #6c757d;
    --gray-700: #495057;
    --gray-800: #343a40;
    --gray-900: #212529;
    
    --font-primary: 'Inter', -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, sans-serif;
    --font-heading: 'Inter', -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, sans-serif;
    
    --radius-sm: 4px;
    --radius-md: 8px;
    --radius-lg: 12px;
    --radius-xl: 16px;
    
    --shadow-sm: 0 1px 2px rgba(0,0,0,0.05);
    --shadow-md: 0 4px 6px rgba(0,0,0,0.1);
    --shadow-lg: 0 10px 15px rgba(0,0,0,0.1);
    --shadow-xl: 0 20px 25px rgba(0,0,0,0.15);
    
    --transition: all 0.3s ease;
}

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

body {
    font-family: var(--font-primary);
    font-size: 16px;
    line-height: 1.6;
    color: var(--gray-800);
    background: var(--white);
}

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

a:hover {
    color: var(--primary-light);
}

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

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

/* Header */
.header {
    position: fixed;
    top: 0;
    left: 0;
    right: 0;
    background: var(--white);
    box-shadow: var(--shadow-sm);
    z-index: 1000;
    transition: var(--transition);
}

.header.scrolled {
    box-shadow: var(--shadow-md);
}

.header-inner {
    display: flex;
    align-items: center;
    justify-content: space-between;
    height: 70px;
}

.logo {
    display: flex;
    align-items: center;
    gap: 10px;
}

.logo-icon {
    width: 40px;
    height: 40px;
    background: var(--primary);
    color: var(--white);
    display: flex;
    align-items: center;
    justify-content: center;
    font-weight: 700;
    font-size: 20px;
    border-radius: var(--radius-md);
}

.logo-text {
    font-size: 20px;
    font-weight: 700;
    color: var(--black);
}

.logo-text span:first-child {
    color: var(--primary);
}

/* Navigation */
.nav {
    display: flex;
    align-items: center;
    gap: 30px;
}

.nav-link {
    color: var(--gray-700);
    font-weight: 500;
    padding: 8px 0;
    position: relative;
}

.nav-link:hover,
.nav-link.active {
    color: var(--primary);
}

.nav-link.active::after {
    content: '';
    position: absolute;
    bottom: 0;
    left: 0;
    right: 0;
    height: 2px;
    background: var(--primary);
}

.dropdown {
    position: relative;
}

.dropdown-menu {
    position: absolute;
    top: 100%;
    left: 0;
    background: var(--white);
    box-shadow: var(--shadow-lg);
    border-radius: var(--radius-md);
    padding: 10px 0;
    min-width: 200px;
    opacity: 0;
    visibility: hidden;
    transform: translateY(10px);
    transition: var(--transition);
}

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

.dropdown-item {
    display: block;
    padding: 10px 20px;
    color: var(--gray-700);
    font-size: 14px;
}

.dropdown-item:hover {
    background: var(--gray-100);
    color: var(--primary);
}

/* Header Actions */
.header-actions {
    display: flex;
    align-items: center;
    gap: 20px;
}

.phone-link {
    display: flex;
    align-items: center;
    gap: 8px;
    color: var(--gray-700);
    font-weight: 500;
}

.phone-link:hover {
    color: var(--primary);
}

/* Buttons */
.btn {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    gap: 8px;
    padding: 12px 24px;
    font-size: 14px;
    font-weight: 600;
    border-radius: var(--radius-md);
    border: none;
    cursor: pointer;
    transition: var(--transition);
}

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

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

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

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

.btn-lg {
    padding: 16px 32px;
    font-size: 16px;
}
.btn-white {
    background-color: #ffffff !important;  /* 纯白背景 */
    color: #333333 !important;             /* 深色文字 */
    border: 1px solid #ffffff;             /* 白色边框 */
}
/* Mobile Menu Toggle */
.menu-toggle {
    display: none;
    flex-direction: column;
    gap: 5px;
    background: none;
    border: none;
    cursor: pointer;
    padding: 5px;
}

.menu-toggle span,
.menu-toggle::before,
.menu-toggle::after {
    content: '';
    display: block;
    width: 25px;
    height: 2px;
    background: var(--gray-800);
    transition: var(--transition);
}

.mobile-menu {
    display: none;
    position: fixed;
    top: 70px;
    left: 0;
    right: 0;
    background: var(--white);
    padding: 20px;
    box-shadow: var(--shadow-lg);
    z-index: 999;
}

.mobile-menu.open {
    display: block;
}

.mobile-nav-link {
    display: block;
    padding: 12px 0;
    color: var(--gray-700);
    font-weight: 500;
    border-bottom: 1px solid var(--gray-200);
}

/* Hero Section */
.hero {
    position: relative;
    min-height: 100vh;
    display: flex;
    align-items: center;
    justify-content: center;
    overflow: hidden;
}

.hero-bg {
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    background-size: cover;
    background-position: center;
}

.hero-overlay {
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    background: linear-gradient(135deg, rgba(30, 58, 138, 0.9) 0%, rgba(30, 58, 138, 0.7) 100%);
}

.hero-content {
    position: relative;
    z-index: 2;
    text-align: center;
    color: var(--white);
    padding: 100px 20px;
}

.hero-title {
    font-size: 48px;
    font-weight: 700;
    line-height: 1.2;
    margin-bottom: 20px;
}

.hero-title span {
    color: var(--accent);
}

.hero-subtitle {
    font-size: 18px;
    max-width: 600px;
    margin: 0 auto 40px;
    opacity: 0.9;
}

.hero-actions {
    display: flex;
    gap: 20px;
    justify-content: center;
    margin-bottom: 60px;
}

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

.hero-stat-value {
    font-size: 36px;
    font-weight: 700;
}

.hero-stat-label {
    font-size: 14px;
    opacity: 0.8;
}

/* Section */
.section {
    padding: 80px 0;
}

.section-header {
    text-align: center;
    max-width: 600px;
    margin: 0 auto 60px;
}

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

.section-subtitle {
    font-size: 16px;
    color: var(--gray-600);
}

.bg-gray {
    background: var(--gray-100);
}

.bg-white {
    background: var(--white);
}

/* Grid */
.grid-2 {
    display: grid;
    grid-template-columns: repeat(2, 1fr);
    gap: 40px;
}

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

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

.grid-6 {
    display: grid;
    grid-template-columns: repeat(6, 1fr);
    gap: 20px;
}

/* Category Cards */
.category-card {
    background: var(--white);
    border-radius: var(--radius-lg);
    overflow: hidden;
    box-shadow: var(--shadow-md);
    transition: var(--transition);
    cursor: pointer;
}

.category-card:hover {
    transform: translateY(-5px);
    box-shadow: var(--shadow-xl);
}

.category-image {
    height: 150px;
    overflow: hidden;
}

.category-image img {
    width: 100%;
    height: 100%;
    object-fit: cover;
    transition: var(--transition);
}

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

.category-name {
    padding: 20px 20px 10px;
    font-size: 16px;
    font-weight: 600;
    color: var(--black);
}

.category-description {
    padding: 0 20px 20px;
    font-size: 14px;
    color: var(--gray-600);
}

.category-link {
    display: flex;
    align-items: center;
    gap: 8px;
    padding: 0 20px 20px;
    font-size: 14px;
    font-weight: 500;
    color: var(--primary);
}

/* Product Cards */
.product-card {
    background: var(--white);
    border-radius: var(--radius-lg);
    overflow: hidden;
    box-shadow: var(--shadow-md);
    transition: var(--transition);
}

.product-card:hover {
    transform: translateY(-5px);
    box-shadow: var(--shadow-xl);
}

.product-image {
    height: 200px;
    overflow: hidden;
}

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

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

.product-info {
    padding: 20px;
}

.product-name {
    font-size: 18px;
    font-weight: 600;
    color: var(--black);
    margin-bottom: 8px;
}

.product-category {
    font-size: 14px;
    color: var(--primary);
    margin-bottom: 12px;
}

.product-description {
    font-size: 14px;
    color: var(--gray-600);
    margin-bottom: 16px;
    display: -webkit-box;
    -webkit-line-clamp: 2;
    -webkit-box-orient: vertical;
    overflow: hidden;
}

/* Tabs */
.tabs {
    display: flex;
    gap: 10px;
    margin-bottom: 40px;
    flex-wrap: wrap;
}

.tab-btn {
    padding: 12px 24px;
    background: var(--white);
    border: 1px solid var(--gray-300);
    border-radius: var(--radius-md);
    font-size: 14px;
    font-weight: 500;
    color: var(--gray-700);
    cursor: pointer;
    transition: var(--transition);
}

.tab-btn:hover {
    border-color: var(--primary);
    color: var(--primary);
}

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

.tab-panel {
    display: none;
}

.tab-panel.active {
    display: block;
}

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

.page-title {
    font-size: 48px;
    font-weight: 700;
    margin-bottom: 16px;
}

.page-subtitle {
    font-size: 18px;
    opacity: 0.9;
}

/* Breadcrumb */
.breadcrumb {
    padding: 20px 0;
    background: var(--gray-100);
}

.breadcrumb-list {
    display: flex;
    align-items: center;
    gap: 10px;
    font-size: 14px;
}

.breadcrumb-link {
    color: var(--gray-600);
}

.breadcrumb-link:hover {
    color: var(--primary);
}

.breadcrumb-current {
    color: var(--gray-800);
}

/* Feature Cards */
.feature-card {
    background: var(--white);
    padding: 40px 30px;
    border-radius: var(--radius-lg);
    text-align: center;
    box-shadow: var(--shadow-md);
    transition: var(--transition);
}

.feature-card:hover {
    transform: translateY(-5px);
    box-shadow: var(--shadow-xl);
}

.feature-icon {
    width: 70px;
    height: 70px;
    background: var(--primary);
    color: var(--white);
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 28px;
    margin: 0 auto 20px;
}

.feature-title {
    font-size: 20px;
    font-weight: 600;
    color: var(--black);
    margin-bottom: 12px;
}

.feature-text {
    font-size: 14px;
    color: var(--gray-600);
    line-height: 1.6;
}

/* Stats Section */
.stats-section {
    background: var(--primary);
    padding: 60px 0;
    color: var(--white);
}

.stats-grid {
    display: grid;
    grid-template-columns: repeat(4, 1fr);
    gap: 40px;
    text-align: center;
}

.stat-value {
    font-size: 48px;
    font-weight: 700;
    margin-bottom: 8px;
}

.stat-label {
    font-size: 16px;
    opacity: 0.9;
}

/* CTA Section */
.cta-section {
    background: var(--primary);
    padding: 80px 0;
    text-align: center;
    color: var(--white);
}

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

.cta-text {
    font-size: 18px;
    opacity: 0.9;
    margin-bottom: 40px;
}

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

/* Footer */
.footer {
    background: var(--gray-900);
    color: var(--gray-400);
    padding: 80px 0 0;
}

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

.footer-logo {
    display: flex;
    align-items: center;
    gap: 10px;
    margin-bottom: 20px;
}

.footer-logo-icon {
    width: 40px;
    height: 40px;
    background: var(--primary);
    color: var(--white);
    display: flex;
    align-items: center;
    justify-content: center;
    font-weight: 700;
    font-size: 20px;
    border-radius: var(--radius-md);
}

.footer-logo-text {
    font-size: 20px;
    font-weight: 700;
    color: var(--white);
}

.footer-logo-text span:first-child {
    color: var(--primary-light);
}

.footer-description {
    font-size: 14px;
    line-height: 1.8;
    margin-bottom: 20px;
}

.footer-contact-item {
    display: flex;
    align-items: flex-start;
    gap: 12px;
    margin-bottom: 12px;
    font-size: 14px;
}

.footer-contact-item i {
    color: var(--primary-light);
    margin-top: 3px;
}

.footer-title {
    font-size: 18px;
    font-weight: 600;
    color: var(--white);
    margin-bottom: 20px;
}

.footer-links {
    list-style: none;
}

.footer-links li {
    margin-bottom: 12px;
}

.footer-link {
    color: var(--gray-400);
    font-size: 14px;
}

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

.footer-bottom {
    border-top: 1px solid var(--gray-800);
    padding: 30px 0;
    display: flex;
    justify-content: space-between;
    align-items: center;
}

.footer-copyright {
    font-size: 14px;
}

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

.footer-social-link {
    width: 40px;
    height: 40px;
    background: var(--gray-800);
    color: var(--gray-400);
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    transition: var(--transition);
}

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

.footer-legal {
    display: flex;
    gap: 20px;
}

.footer-legal a {
    color: var(--gray-400);
    font-size: 14px;
}

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

/* Back to Top */
.back-to-top {
    position: fixed;
    bottom: 30px;
    right: 30px;
    width: 50px;
    height: 50px;
    background: var(--primary);
    color: var(--white);
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    opacity: 0;
    visibility: hidden;
    transition: var(--transition);
    z-index: 999;
}

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

.back-to-top:hover {
    background: var(--primary-dark);
    color: var(--white);
}

/* Contact Page */
.contact-grid {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 60px;
}

.contact-info-item {
    display: flex;
    align-items: flex-start;
    gap: 20px;
    margin-bottom: 30px;
}

.contact-info-icon {
    width: 50px;
    height: 50px;
    background: var(--primary);
    color: var(--white);
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 20px;
    flex-shrink: 0;
}

.contact-info-content h4 {
    font-size: 18px;
    font-weight: 600;
    color: var(--black);
    margin-bottom: 8px;
}

.contact-info-content p {
    font-size: 14px;
    color: var(--gray-600);
    line-height: 1.6;
}

.contact-form {
    background: var(--white);
    padding: 10px;
    border-radius: var(--radius-lg);
    box-shadow: var(--shadow-md);
}

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

.form-group label {
    display: block;
    font-size: 14px;
    font-weight: 500;
    color: var(--gray-700);
    margin-bottom: 8px;
}

.form-group input,
.form-group textarea,
.form-group select {
    width: 100%;
    padding: 12px 16px;
    border: 1px solid var(--gray-300);
    border-radius: var(--radius-md);
    font-size: 14px;
    transition: var(--transition);
}

.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(30, 58, 138, 0.1);
}

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

/* Scroll Reveal */
.scroll-reveal {
    opacity: 0;
    transform: translateY(30px);
    transition: opacity 0.6s ease, transform 0.6s ease;
}

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

/* Responsive */
@media (max-width: 1024px) {
    .grid-6 {
        grid-template-columns: repeat(3, 1fr);
    }
    
    .grid-4 {
        grid-template-columns: repeat(2, 1fr);
    }
    
    .footer-grid {
        grid-template-columns: repeat(2, 1fr);
    }
}

@media (max-width: 768px) {
    .nav {
        display: none;
    }
    
    .menu-toggle {
        display: flex;
    }
    
    .hero-title {
        font-size: 32px;
    }
    
    .hero-stats {
        flex-direction: column;
        gap: 20px;
    }
    
    .grid-2,
    .grid-3,
    .grid-4,
    .grid-6 {
        grid-template-columns: 1fr;
    }
    
    .stats-grid {
        grid-template-columns: repeat(2, 1fr);
    }
    
    .footer-grid {
        grid-template-columns: 1fr;
        gap: 40px;
    }
    
    .footer-bottom {
        flex-direction: column;
        gap: 20px;
        text-align: center;
    }
    
    .contact-grid {
        grid-template-columns: 1fr;
    }
}

@media (max-width: 480px) {
    .hero-actions {
        flex-direction: column;
    }
    
    .cta-actions {
        flex-direction: column;
    }
    
    .section-title {
        font-size: 28px;
    }
    
    .page-title {
        font-size: 32px;
    }
}

/* Factory Gallery Styles */
.factory-gallery {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: 1.5rem;
    margin-top: 3rem;
}

.gallery-item {
    position: relative;
    border-radius: var(--radius-lg);
    overflow: hidden;
    box-shadow: var(--shadow-md);
    transition: transform 0.3s ease, box-shadow 0.3s ease;
}

.gallery-item:hover {
    transform: translateY(-5px);
    box-shadow: var(--shadow-xl);
}

.gallery-image {
    position: relative;
    width: 100%;
    aspect-ratio: 4 / 3;
    overflow: hidden;
}

.gallery-image img {
    width: 100%;
    height: 100%;
    object-fit: cover;
    transition: transform 0.5s ease;
}

.gallery-item:hover .gallery-image img {
    transform: scale(1.1);
}

.gallery-overlay {
    position: absolute;
    bottom: 0;
    left: 0;
    right: 0;
    background: linear-gradient(to top, rgba(0, 0, 0, 0.8) 0%, rgba(0, 0, 0, 0) 100%);
    padding: 2rem 1.5rem 1.5rem;
    opacity: 0;
    transition: opacity 0.3s ease;
}

.gallery-item:hover .gallery-overlay {
    opacity: 1;
}

.gallery-content h4 {
    color: var(--white);
    font-size: 1.125rem;
    font-weight: 600;
    margin-bottom: 0.25rem;
}

.gallery-content p {
    color: rgba(255, 255, 255, 0.8);
    font-size: 0.875rem;
}

/* Responsive Design */
@media (max-width: 992px) {
    .factory-gallery {
        grid-template-columns: repeat(2, 1fr);
        gap: 1rem;
    }
}

@media (max-width: 576px) {
    .factory-gallery {
        grid-template-columns: 1fr;
    }
    
    .gallery-image {
        aspect-ratio: 16 / 9;
    }
}