:root {
    --primary-blue: #1B3A5C;
    --champagne-gold: #C8A96E;
    --warm-white: #FAF8F5;
    --cream-white: #F5F3EF;
    --text-dark: #2C2C2C;
    --text-light: #666666;
    --border-light: #E8E4DF;
}

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

body {
    font-family: 'Microsoft YaHei', 'Source Han Sans CN', sans-serif;
    background-color: var(--warm-white);
    color: var(--text-dark);
    line-height: 1.8;
}

h1, h2, h3 {
    font-family: 'Playfair Display', serif;
    font-weight: 600;
}

p {
    font-family: 'Montserrat', sans-serif;
}

.header {
    position: fixed;
    top: 0;
    width: 100%;
    background: rgba(255, 255, 255, 0.98);
    box-shadow: 0 2px 20px rgba(0, 0, 0, 0.05);
    z-index: 1000;
}

.header-container {
    max-width: 1400px;
    margin: 0 auto;
    display: flex;
    justify-content: space-between;
    align-items: center;
    padding: 20px 60px;
}

.logo {
    font-family: 'Playfair Display', serif;
    font-size: 26px;
    color: var(--primary-blue);
    letter-spacing: 3px;
    text-decoration: none;
}

.logo span {
    color: var(--champagne-gold);
}

.nav-menu {
    display: flex;
    list-style: none;
    gap: 45px;
}

.nav-menu a {
    text-decoration: none;
    color: var(--primary-blue);
    font-family: 'Montserrat', sans-serif;
    font-size: 14px;
    letter-spacing: 1px;
    text-transform: uppercase;
    position: relative;
    padding: 5px 0;
    transition: color 0.3s ease;
}

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

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

.nav-menu a:hover {
    color: var(--champagne-gold);
}

.mobile-menu-btn {
    display: none;
    flex-direction: column;
    gap: 5px;
    cursor: pointer;
    padding: 10px;
}

.mobile-menu-btn span {
    width: 25px;
    height: 2px;
    background: var(--primary-blue);
    transition: 0.3s;
}

.hero {
    height: 100vh;
    background: linear-gradient(135deg, rgba(27, 58, 92, 0.85), rgba(27, 58, 92, 0.7)),
                url('https://images.unsplash.com/photo-1515562141207-7a88fb7ce338?w=1920') center/cover;
    display: flex;
    align-items: center;
    justify-content: center;
    text-align: center;
    color: white;
    position: relative;
}

.hero-content {
    max-width: 800px;
    padding: 0 30px;
}

.hero-subtitle {
    font-family: 'Montserrat', sans-serif;
    font-size: 14px;
    letter-spacing: 8px;
    text-transform: uppercase;
    color: var(--champagne-gold);
    margin-bottom: 30px;
}

.hero h1 {
    font-size: 56px;
    font-weight: 400;
    letter-spacing: 8px;
    margin-bottom: 25px;
    line-height: 1.3;
}

.hero-description {
    font-size: 16px;
    font-weight: 300;
    opacity: 0.9;
    margin-bottom: 50px;
    line-height: 2;
}

.btn-primary {
    display: inline-block;
    padding: 16px 50px;
    background: var(--champagne-gold);
    color: white;
    text-decoration: none;
    font-family: 'Montserrat', sans-serif;
    font-size: 13px;
    letter-spacing: 3px;
    text-transform: uppercase;
    transition: all 0.4s ease;
    border: 2px solid var(--champagne-gold);
}

.btn-primary:hover {
    background: transparent;
    color: var(--champagne-gold);
}

.btn-secondary {
    display: inline-block;
    padding: 16px 50px;
    background: transparent;
    color: white;
    text-decoration: none;
    font-family: 'Montserrat', sans-serif;
    font-size: 13px;
    letter-spacing: 3px;
    text-transform: uppercase;
    border: 2px solid white;
    transition: all 0.4s ease;
    margin-left: 20px;
}

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

.section {
    padding: 120px 60px;
}

.section-title {
    text-align: center;
    margin-bottom: 20px;
}

.timeline .section-title {
    text-align: center;
    margin-bottom: 60px;
    position: relative;
    z-index: 2;
    background: var(--cream-white);
    padding: 0 30px;
}

.section-title h2 {
    font-size: 42px;
    color: var(--primary-blue);
    letter-spacing: 4px;
    margin-bottom: 15px;
}

.section-title .divider {
    width: 80px;
    height: 3px;
    background: var(--champagne-gold);
    margin: 0 auto 25px;
}

.section-title p {
    font-size: 15px;
    color: var(--text-light);
    max-width: 600px;
    margin: 0 auto;
}

.features {
    background: white;
    display: grid;
    grid-template-columns: repeat(4, 1fr);
    gap: 40px;
    padding: 100px 60px;
}

.feature-item {
    text-align: center;
    padding: 40px 30px;
    transition: transform 0.3s ease;
}

.feature-item:hover {
    transform: translateY(-10px);
}

.feature-icon {
    width: 80px;
    height: 80px;
    margin: 0 auto 30px;
    display: flex;
    align-items: center;
    justify-content: center;
    border: 2px solid var(--champagne-gold);
    border-radius: 50%;
    color: var(--champagne-gold);
    font-size: 32px;
}

.feature-item h3 {
    font-size: 20px;
    color: var(--primary-blue);
    margin-bottom: 15px;
    font-family: 'Microsoft YaHei', sans-serif;
    font-weight: 600;
}

.feature-item p {
    font-size: 14px;
    color: var(--text-light);
    line-height: 1.8;
}

.products-preview {
    background: var(--cream-white);
}

.products-grid {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: 35px;
    max-width: 1200px;
    margin: 60px auto 0;
}

.product-card {
    background: white;
    overflow: hidden;
    transition: all 0.4s ease;
    cursor: pointer;
}

.product-card:hover {
    box-shadow: 0 20px 60px rgba(0, 0, 0, 0.1);
    transform: translateY(-5px);
}

.product-image {
    height: 300px;
    overflow: hidden;
    position: relative;
}

.product-image img {
    width: 100%;
    height: 100%;
    object-fit: cover;
    transition: transform 0.6s ease;
}

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

.product-overlay {
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background: rgba(27, 58, 92, 0.7);
    display: flex;
    align-items: center;
    justify-content: center;
    opacity: 0;
    transition: opacity 0.4s ease;
}

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

.product-overlay span {
    color: white;
    font-family: 'Montserrat', sans-serif;
    font-size: 13px;
    letter-spacing: 3px;
    text-transform: uppercase;
    border: 2px solid white;
    padding: 12px 30px;
}

.product-info {
    padding: 30px;
    text-align: center;
}

.product-info h3 {
    font-size: 20px;
    color: var(--primary-blue);
    margin-bottom: 10px;
    font-family: 'Microsoft YaHei', sans-serif;
}

.product-info p {
    font-size: 14px;
    color: var(--text-light);
}

.footer {
    background: var(--primary-blue);
    color: white;
    padding: 80px 60px 30px;
}

.footer-content {
    max-width: 1200px;
    margin: 0 auto;
    display: grid;
    grid-template-columns: 2fr 1fr 1fr 1fr;
    gap: 60px;
    padding-bottom: 50px;
    border-bottom: 1px solid rgba(255, 255, 255, 0.1);
}

.footer-brand h3 {
    font-size: 28px;
    margin-bottom: 20px;
    letter-spacing: 3px;
}

.footer-brand h3 span {
    color: var(--champagne-gold);
}

.footer-brand p {
    font-size: 14px;
    opacity: 0.7;
    line-height: 1.8;
    margin-bottom: 25px;
}

.footer-social {
    display: flex;
    gap: 15px;
}

.footer-social a {
    width: 40px;
    height: 40px;
    border: 1px solid rgba(255, 255, 255, 0.3);
    display: flex;
    align-items: center;
    justify-content: center;
    color: white;
    text-decoration: none;
    transition: all 0.3s ease;
}

.footer-social a:hover {
    background: var(--champagne-gold);
    border-color: var(--champagne-gold);
}

.footer-links h4 {
    font-family: 'Microsoft YaHei', sans-serif;
    font-size: 16px;
    margin-bottom: 25px;
    letter-spacing: 2px;
}

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

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

.footer-links a {
    color: rgba(255, 255, 255, 0.7);
    text-decoration: none;
    font-size: 14px;
    transition: color 0.3s ease;
}

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

.footer-contact p {
    font-size: 14px;
    opacity: 0.7;
    margin-bottom: 10px;
}

.footer-bottom {
    max-width: 1200px;
    margin: 0 auto;
    padding-top: 30px;
    text-align: center;
    font-size: 13px;
    opacity: 0.6;
}

.page-header {
    height: 50vh;
    background: linear-gradient(135deg, rgba(27, 58, 92, 0.85), rgba(27, 58, 92, 0.75)),
                url('https://images.unsplash.com/photo-1617038260897-41a1f14a8ca0?w=1920') center/cover;
    display: flex;
    align-items: center;
    justify-content: center;
    text-align: center;
    color: white;
    margin-top: 80px;
}

.page-header h1 {
    font-size: 48px;
    letter-spacing: 6px;
    margin-bottom: 15px;
}

.page-header p {
    font-size: 15px;
    opacity: 0.8;
    letter-spacing: 2px;
}

.about-content {
    max-width: 1200px;
    margin: 0 auto;
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 80px;
    align-items: center;
}

.about-image {
    height: 500px;
    overflow: hidden;
}

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

.about-text h3 {
    font-size: 32px;
    color: var(--primary-blue);
    margin-bottom: 25px;
    letter-spacing: 2px;
}

.about-text p {
    font-size: 15px;
    color: var(--text-light);
    margin-bottom: 20px;
    line-height: 2;
}

.about-list {
    margin: 30px 0;
}

.about-list li {
    font-size: 15px;
    color: var(--text-light);
    margin-bottom: 15px;
    padding-left: 25px;
    position: relative;
    list-style: none;
}

.about-list li::before {
    content: '◆';
    position: absolute;
    left: 0;
    color: var(--champagne-gold);
    font-size: 10px;
}

.timeline {
    background: var(--cream-white);
    position: relative;
    padding: 100px 60px;
}

.timeline-content {
    max-width: 1000px;
    margin: 0 auto;
    position: relative;
}

.timeline::before {
    content: '';
    position: absolute;
    left: 50%;
    top: 200px;
    bottom: 100px;
    width: 2px;
    background: var(--champagne-gold);
    transform: translateX(-50%);
}

.timeline-item {
    display: flex;
    justify-content: flex-end;
    padding-right: 50%;
    margin-bottom: 50px;
    position: relative;
}

.timeline-item:nth-child(even) {
    justify-content: flex-start;
    padding-right: 0;
    padding-left: 50%;
}

.timeline-item::before {
    content: '';
    position: absolute;
    left: 50%;
    top: 20px;
    width: 16px;
    height: 16px;
    background: var(--champagne-gold);
    border-radius: 50%;
    transform: translateX(-50%);
    border: 4px solid var(--cream-white);
}

.timeline-item-content {
    background: white;
    padding: 30px;
    max-width: 420px;
    box-shadow: 0 10px 40px rgba(0, 0, 0, 0.05);
}

.timeline-item-content h4 {
    font-family: 'Playfair Display', serif;
    font-size: 18px;
    color: var(--champagne-gold);
    margin-bottom: 10px;
}

.timeline-item-content h3 {
    font-size: 20px;
    color: var(--primary-blue);
    margin-bottom: 15px;
}

.timeline-item-content p {
    font-size: 14px;
    color: var(--text-light);
    line-height: 1.8;
}

.products-page {
    background: white;
}

.products-filter {
    display: flex;
    justify-content: center;
    gap: 40px;
    margin-bottom: 60px;
}

.filter-btn {
    background: none;
    border: none;
    font-family: 'Montserrat', sans-serif;
    font-size: 14px;
    letter-spacing: 2px;
    color: var(--text-light);
    cursor: pointer;
    padding: 10px 20px;
    position: relative;
    transition: color 0.3s ease;
}

.filter-btn::after {
    content: '';
    position: absolute;
    bottom: 0;
    left: 50%;
    width: 0;
    height: 2px;
    background: var(--champagne-gold);
    transition: all 0.3s ease;
    transform: translateX(-50%);
}

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

.filter-btn.active::after,
.filter-btn:hover::after {
    width: 100%;
}

.products-showcase {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: 30px;
    max-width: 1200px;
    margin: 0 auto;
}

.contact-section {
    max-width: 1200px;
    margin: 0 auto;
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 80px;
    padding: 100px 60px;
}

.contact-info h3 {
    font-size: 28px;
    color: var(--primary-blue);
    margin-bottom: 30px;
    letter-spacing: 2px;
}

.contact-info p {
    font-size: 15px;
    color: var(--text-light);
    margin-bottom: 30px;
    line-height: 2;
}

.contact-details {
    margin-top: 40px;
}

.contact-item {
    display: flex;
    align-items: flex-start;
    margin-bottom: 25px;
}

.contact-item-icon {
    width: 50px;
    height: 50px;
    background: var(--cream-white);
    display: flex;
    align-items: center;
    justify-content: center;
    color: var(--champagne-gold);
    font-size: 20px;
    margin-right: 20px;
    flex-shrink: 0;
}

.contact-item-text h4 {
    font-family: 'Microsoft YaHei', sans-serif;
    font-size: 16px;
    color: var(--primary-blue);
    margin-bottom: 5px;
}

.contact-item-text p {
    font-size: 14px;
    color: var(--text-light);
    margin: 0;
}

.contact-form {
    background: var(--cream-white);
    padding: 50px;
}

.contact-form h3 {
    font-size: 28px;
    color: var(--primary-blue);
    margin-bottom: 30px;
    letter-spacing: 2px;
}

.form-group {
    margin-bottom: 25px;
}

.form-group label {
    display: block;
    font-size: 14px;
    color: var(--text-dark);
    margin-bottom: 10px;
    font-family: 'Microsoft YaHei', sans-serif;
}

.form-group input,
.form-group textarea {
    width: 100%;
    padding: 15px 20px;
    border: 1px solid var(--border-light);
    background: white;
    font-family: 'Montserrat', sans-serif;
    font-size: 14px;
    transition: border-color 0.3s ease;
}

.form-group input:focus,
.form-group textarea:focus {
    outline: none;
    border-color: var(--champagne-gold);
}

.form-group textarea {
    height: 150px;
    resize: vertical;
}

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

.custom-content {
    max-width: 1200px;
    margin: 0 auto;
    padding: 100px 60px;
}

.custom-intro {
    text-align: center;
    margin-bottom: 80px;
}

.custom-intro h3 {
    font-size: 32px;
    color: var(--primary-blue);
    margin-bottom: 20px;
}

.custom-intro p {
    font-size: 15px;
    color: var(--text-light);
    max-width: 700px;
    margin: 0 auto;
    line-height: 2;
}

.custom-steps {
    display: grid;
    grid-template-columns: repeat(4, 1fr);
    gap: 40px;
    margin-bottom: 80px;
}

.custom-step {
    text-align: center;
    position: relative;
}

.step-number {
    width: 60px;
    height: 60px;
    background: var(--champagne-gold);
    color: white;
    font-family: 'Playfair Display', serif;
    font-size: 24px;
    display: flex;
    align-items: center;
    justify-content: center;
    margin: 0 auto 25px;
    border-radius: 50%;
}

.custom-step h4 {
    font-size: 18px;
    color: var(--primary-blue);
    margin-bottom: 15px;
    font-family: 'Microsoft YaHei', sans-serif;
}

.custom-step p {
    font-size: 14px;
    color: var(--text-light);
    line-height: 1.8;
}

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

.gallery-item {
    height: 300px;
    overflow: hidden;
    position: relative;
    cursor: pointer;
}

.gallery-item img {
    width: 100%;
    height: 100%;
    object-fit: cover;
    transition: transform 0.6s ease;
}

.gallery-item:hover img {
    transform: scale(1.08);
}

.gallery-overlay {
    position: absolute;
    bottom: 0;
    left: 0;
    right: 0;
    background: linear-gradient(transparent, rgba(27, 58, 92, 0.9));
    padding: 30px 20px;
    color: white;
}

.gallery-overlay h4 {
    font-size: 18px;
    margin-bottom: 5px;
}

.gallery-overlay p {
    font-size: 13px;
    opacity: 0.8;
}

@media (max-width: 1024px) {
    .products-grid,
    .products-showcase {
        grid-template-columns: repeat(2, 1fr);
    }
    
    .features {
        grid-template-columns: repeat(2, 1fr);
    }
    
    .about-content {
        grid-template-columns: 1fr;
        gap: 50px;
    }
    
    .custom-steps {
        grid-template-columns: repeat(2, 1fr);
    }
    
    .footer-content {
        grid-template-columns: repeat(2, 1fr);
    }
}

@media (max-width: 768px) {
    .header-container {
        padding: 20px 30px;
    }
    
    .nav-menu {
        display: none;
        position: absolute;
        top: 100%;
        left: 0;
        right: 0;
        background: white;
        flex-direction: column;
        padding: 30px;
        gap: 20px;
        box-shadow: 0 10px 30px rgba(0, 0, 0, 0.1);
    }
    
    .nav-menu.active {
        display: flex;
    }
    
    .mobile-menu-btn {
        display: flex;
    }
    
    .hero h1 {
        font-size: 36px;
    }
    
    .section {
        padding: 80px 30px;
    }
    
    .features {
        padding: 60px 30px;
        grid-template-columns: 1fr;
    }
    
    .products-grid,
    .products-showcase {
        grid-template-columns: 1fr;
    }
    
    .custom-steps {
        grid-template-columns: 1fr;
    }
    
    .custom-gallery {
        grid-template-columns: 1fr;
    }
    
    .contact-section {
        grid-template-columns: 1fr;
        padding: 60px 30px;
    }
    
    .form-row {
        grid-template-columns: 1fr;
    }
    
    .footer-content {
        grid-template-columns: 1fr;
        gap: 40px;
    }
    
    .footer {
        padding: 60px 30px 30px;
    }
    
    .page-header {
        height: 40vh;
    }
    
    .page-header h1 {
        font-size: 32px;
    }
}