/* ========== 全局样式重置 ========== */
* {
    margin: 0;
    padding: 0;
    box-sizing: border-box;
}

:root {
    --primary: #e8622a;
    --primary-light: #f0824a;
    --primary-dark: #c44e18;
    --accent: #f5a623;
    --accent-light: #f7c948;
    --text-dark: #2d3436;
    --text-gray: #636e72;
    --text-light: #b2bec3;
    --bg-light: #f8f9fa;
    --bg-white: #ffffff;
    --bg-warm: #fef9f3;
    --shadow-sm: 0 2px 8px rgba(0,0,0,0.08);
    --shadow-md: 0 4px 16px rgba(0,0,0,0.12);
    --shadow-lg: 0 8px 32px rgba(0,0,0,0.15);
    --radius-sm: 8px;
    --radius-md: 12px;
    --radius-lg: 20px;
    --transition: all 0.3s ease;
}

html {
    scroll-behavior: smooth;
}

body {
    font-family: -apple-system, BlinkMacSystemFont, 'Microsoft YaHei', 'PingFang SC', 'Helvetica Neue', Arial, sans-serif;
    line-height: 1.6;
    color: var(--text-dark);
    background-color: var(--bg-light);
    overflow-x: hidden;
}

.container {
    max-width: 1200px;
    margin: 0 auto;
    padding: 0 24px;
}

/* ========== 头部导航 ========== */
.header {
    background: rgba(255, 255, 255, 0.98);
    backdrop-filter: blur(10px);
    padding: 0;
    position: fixed;
    width: 100%;
    top: 0;
    z-index: 1000;
    box-shadow: var(--shadow-sm);
    transition: var(--transition);
}

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

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

.logo {
    display: flex;
    align-items: center;
    gap: 10px;
    text-decoration: none;
}

.logo-img {
    height: 48px;
    width: auto;
}

.logo h1 {
    font-size: 0;
    position: absolute;
    left: -9999px;
}

.nav ul {
    display: flex;
    list-style: none;
    gap: 0.5rem;
}

.nav a {
    color: var(--text-gray);
    text-decoration: none;
    padding: 0.6rem 1.2rem;
    transition: var(--transition);
    border-radius: 50px;
    font-size: 0.95rem;
    font-weight: 500;
}

.nav a:hover,
.nav a.active {
    color: var(--primary);
    background-color: rgba(232, 98, 42, 0.1);
}

.mobile-menu-btn {
    display: none;
    background: none;
    border: none;
    font-size: 1.5rem;
    cursor: pointer;
    color: var(--primary);
    padding: 0.5rem;
}

/* ========== Hero区域 ========== */
.hero {
    background: linear-gradient(135deg, var(--primary-dark) 0%, var(--primary) 50%, var(--primary-light) 100%);
    color: white;
    padding: 0;
    text-align: center;
    position: relative;
    min-height: 600px;
    display: flex;
    align-items: center;
    justify-content: center;
    margin-top: 70px;
    overflow: hidden;
}

.hero::before {
    content: '';
    position: absolute;
    top: -50%;
    left: -50%;
    width: 200%;
    height: 200%;
    background: radial-gradient(circle at 30% 70%, rgba(245, 166, 35, 0.2) 0%, transparent 50%),
                radial-gradient(circle at 70% 30%, rgba(247, 201, 72, 0.15) 0%, transparent 50%);
    animation: heroFloat 20s ease-in-out infinite;
}

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

.hero-content {
    position: relative;
    z-index: 2;
    max-width: 700px;
    padding: 80px 24px;
}

.hero-subtitle {
    font-size: 0.9rem;
    letter-spacing: 4px;
    color: var(--accent-light);
    margin-bottom: 1.5rem;
    font-weight: 500;
}

.hero-content h2 {
    font-size: 3rem;
    margin-bottom: 1.5rem;
    font-weight: 700;
    line-height: 1.2;
}

.hero-desc {
    font-size: 1.15rem;
    margin-bottom: 2.5rem;
    opacity: 0.9;
    line-height: 1.8;
}

.hero-buttons {
    display: flex;
    gap: 1rem;
    justify-content: center;
    flex-wrap: wrap;
}

.btn-primary {
    display: inline-block;
    background: var(--accent);
    color: white;
    padding: 1rem 2.5rem;
    text-decoration: none;
    border-radius: 50px;
    font-weight: 600;
    font-size: 1rem;
    transition: var(--transition);
    border: none;
    cursor: pointer;
}

.btn-primary:hover {
    background: var(--accent-light);
    transform: translateY(-2px);
    box-shadow: 0 10px 25px rgba(245, 166, 35, 0.4);
}

.btn-outline {
    display: inline-block;
    background: transparent;
    color: white;
    padding: 1rem 2.5rem;
    text-decoration: none;
    border-radius: 50px;
    font-weight: 600;
    font-size: 1rem;
    transition: var(--transition);
    border: 2px solid rgba(255,255,255,0.5);
    cursor: pointer;
}

.btn-outline:hover {
    background: rgba(255,255,255,0.15);
    border-color: white;
}

.hero-wave {
    position: absolute;
    bottom: -2px;
    left: 0;
    width: 100%;
    z-index: 3;
}

.hero-wave svg {
    width: 100%;
    height: auto;
    display: block;
}

/* ========== 产品特色 ========== */
.features-section {
    padding: 60px 0;
    background: var(--bg-white);
}

.features-grid {
    display: grid;
    grid-template-columns: repeat(4, 1fr);
    gap: 2rem;
}

.feature-item {
    text-align: center;
    padding: 2rem 1.5rem;
    border-radius: var(--radius-md);
    transition: var(--transition);
}

.feature-item:hover {
    background: var(--bg-warm);
    transform: translateY(-5px);
}

.feature-icon {
    font-size: 2.5rem;
    margin-bottom: 1rem;
}

.feature-item h3 {
    font-size: 1.1rem;
    color: var(--primary-dark);
    margin-bottom: 0.5rem;
}

.feature-item p {
    font-size: 0.9rem;
    color: var(--text-gray);
}

/* ========== 区块标题 ========== */
.section-header {
    text-align: center;
    margin-bottom: 3rem;
}

.section-subtitle {
    font-size: 0.85rem;
    letter-spacing: 3px;
    color: var(--primary);
    font-weight: 600;
    margin-bottom: 0.5rem;
}

.section-title {
    font-size: 2.2rem;
    color: var(--text-dark);
    margin-bottom: 1rem;
    font-weight: 700;
}

.section-desc {
    font-size: 1.05rem;
    color: var(--text-gray);
    max-width: 600px;
    margin: 0 auto;
}

/* ========== 产品列表 ========== */
.products-section {
    padding: 80px 0;
    background: var(--bg-light);
}

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

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

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

.product-image-wrapper {
    position: relative;
    overflow: hidden;
    background: linear-gradient(135deg, #fef5ee 0%, #fde8d4 100%);
    height: 280px;
}

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

.product-card:hover .product-image {
    transform: scale(1.05);
}

.product-tag {
    position: absolute;
    top: 16px;
    left: 16px;
    background: var(--primary);
    color: white;
    padding: 0.4rem 1rem;
    border-radius: 50px;
    font-size: 0.8rem;
    font-weight: 600;
}

.product-discount {
    position: absolute;
    top: 16px;
    right: 16px;
    background: #e74c3c;
    color: white;
    padding: 0.4rem 0.8rem;
    border-radius: 50px;
    font-size: 0.8rem;
    font-weight: 700;
}

.product-info {
    padding: 1.5rem;
}

.product-name {
    font-size: 1.1rem;
    font-weight: 600;
    margin-bottom: 0.8rem;
    color: var(--text-dark);
    line-height: 1.4;
    display: -webkit-box;
    -webkit-line-clamp: 2;
    -webkit-box-orient: vertical;
    overflow: hidden;
}

.product-description {
    color: var(--text-gray);
    font-size: 0.9rem;
    margin-bottom: 1.2rem;
    line-height: 1.6;
    display: -webkit-box;
    -webkit-line-clamp: 2;
    -webkit-box-orient: vertical;
    overflow: hidden;
}

.product-price {
    display: flex;
    align-items: baseline;
    gap: 0.8rem;
    margin-bottom: 1.2rem;
}

.current-price {
    font-size: 1.5rem;
    color: var(--primary);
    font-weight: 700;
}

.original-price {
    font-size: 0.9rem;
    color: var(--text-light);
    text-decoration: line-through;
}

.product-actions {
    display: flex;
    gap: 0.8rem;
}

.btn-detail,
.btn-contact {
    flex: 1;
    padding: 0.7rem;
    border-radius: var(--radius-sm);
    font-size: 0.9rem;
    font-weight: 600;
    cursor: pointer;
    transition: var(--transition);
    border: none;
    text-align: center;
}

.btn-detail {
    background: var(--bg-light);
    color: var(--primary);
    border: 1px solid var(--primary-light);
}

.btn-detail:hover {
    background: rgba(232, 98, 42, 0.1);
}

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

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

/* ========== 关于我们 ========== */
.about-section {
    padding: 80px 0;
    background: var(--bg-white);
}

.about-content {
    max-width: 800px;
    margin: 0 auto;
    text-align: center;
}

.about-text p {
    font-size: 1.05rem;
    line-height: 1.9;
    color: var(--text-gray);
    margin-bottom: 1.5rem;
}

.about-stats {
    display: flex;
    justify-content: center;
    gap: 3rem;
    margin-top: 2.5rem;
    padding-top: 2.5rem;
    border-top: 1px solid #eee;
}

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

.stat-number {
    display: block;
    font-size: 2rem;
    font-weight: 700;
    color: var(--primary);
    margin-bottom: 0.3rem;
}

.stat-label {
    font-size: 0.9rem;
    color: var(--text-gray);
}

/* ========== 联系方式 ========== */
.contact-section {
    padding: 80px 0;
    background: linear-gradient(135deg, var(--primary-dark) 0%, var(--primary) 100%);
    color: white;
}

.contact-section .section-subtitle {
    color: var(--accent-light);
}

.contact-section .section-title {
    color: white;
}

.contact-section .section-desc {
    color: rgba(255,255,255,0.8);
}

.contact-info {
    display: grid;
    grid-template-columns: repeat(4, 1fr);
    gap: 2rem;
}

.contact-item {
    text-align: center;
    padding: 2rem 1.5rem;
    background: rgba(255,255,255,0.1);
    border-radius: var(--radius-md);
    backdrop-filter: blur(10px);
    transition: var(--transition);
}

.contact-item:hover {
    background: rgba(255,255,255,0.2);
    transform: translateY(-5px);
}

.contact-icon {
    font-size: 2rem;
    margin-bottom: 1rem;
}

.contact-item h3 {
    font-size: 1.1rem;
    margin-bottom: 0.5rem;
}

.contact-item p {
    color: rgba(255,255,255,0.85);
    font-size: 0.95rem;
}

/* ========== 页脚 ========== */
.footer {
    background: var(--text-dark);
    color: rgba(255,255,255,0.7);
    padding: 3rem 0 1.5rem;
}

.footer-content {
    display: grid;
    grid-template-columns: 2fr 1fr 1fr;
    gap: 3rem;
    padding-bottom: 2rem;
    border-bottom: 1px solid rgba(255,255,255,0.1);
}

.footer-brand h3 {
    color: white;
    font-size: 1.5rem;
    margin-bottom: 0.5rem;
}

.footer-brand p {
    color: var(--accent);
    font-size: 0.9rem;
}

.footer-links h4,
.footer-contact h4 {
    color: white;
    font-size: 1rem;
    margin-bottom: 1rem;
}

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

.footer-links li {
    margin-bottom: 0.5rem;
}

.footer-links a {
    color: rgba(255,255,255,0.7);
    text-decoration: none;
    font-size: 0.9rem;
    transition: var(--transition);
}

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

.footer-contact p {
    font-size: 0.9rem;
    margin-bottom: 0.3rem;
}

.footer-bottom {
    padding-top: 1.5rem;
    text-align: center;
}

.footer-bottom p {
    font-size: 0.85rem;
    margin-bottom: 0.3rem;
}

.beian-info {
    font-size: 0.8rem;
    color: rgba(255,255,255,0.4);
}

.beian-info a {
    color: rgba(255,255,255,0.4);
    text-decoration: none;
    transition: var(--transition);
}

.beian-info a:hover {
    color: var(--accent);
    text-decoration: underline;
}

/* ========== 弹窗样式 ========== */
.modal {
    display: none;
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    z-index: 2000;
}

.modal.active {
    display: flex;
    align-items: center;
    justify-content: center;
}

.modal-overlay {
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background: rgba(0,0,0,0.6);
    backdrop-filter: blur(5px);
}

.modal-content {
    position: relative;
    background: white;
    border-radius: var(--radius-lg);
    max-width: 750px;
    width: 90%;
    max-height: 90vh;
    overflow-y: auto;
    box-shadow: var(--shadow-lg);
    animation: modalIn 0.3s ease;
}

@keyframes modalIn {
    from { opacity: 0; transform: scale(0.95) translateY(20px); }
    to { opacity: 1; transform: scale(1) translateY(0); }
}

.modal-header {
    display: flex;
    justify-content: space-between;
    align-items: center;
    padding: 1.5rem 2rem;
    border-bottom: 1px solid #eee;
}

.modal-close {
    background: none;
    border: none;
    font-size: 1.8rem;
    cursor: pointer;
    color: var(--text-gray);
    transition: var(--transition);
    line-height: 1;
}

.modal-close:hover {
    color: var(--text-dark);
}

.modal-body {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 2rem;
    padding: 2rem;
}

.modal-image {
    border-radius: var(--radius-md);
    overflow: hidden;
    background: var(--bg-light);
}

.modal-image img {
    width: 100%;
    height: 100%;
    object-fit: cover;
    min-height: 300px;
}

.modal-info h2 {
    font-size: 1.4rem;
    color: var(--text-dark);
    margin-bottom: 1rem;
    line-height: 1.4;
}

.modal-tag {
    display: inline-block;
    background: var(--primary);
    color: white;
    padding: 0.3rem 1rem;
    border-radius: 50px;
    font-size: 0.8rem;
    margin-bottom: 1rem;
}

.modal-price-row {
    display: flex;
    align-items: baseline;
    gap: 1rem;
    margin-bottom: 1.5rem;
    padding: 1rem;
    background: #fff5f0;
    border-radius: var(--radius-sm);
}

.modal-current-price {
    font-size: 2rem;
    color: var(--primary);
    font-weight: 700;
}

.modal-original-price {
    font-size: 1rem;
    color: var(--text-light);
    text-decoration: line-through;
}

.modal-discount {
    background: var(--primary);
    color: white;
    padding: 0.2rem 0.6rem;
    border-radius: 4px;
    font-size: 0.8rem;
    font-weight: 600;
}

.modal-detail h3 {
    font-size: 1rem;
    color: var(--text-dark);
    margin-bottom: 0.8rem;
}

.modal-detail p {
    font-size: 0.9rem;
    color: var(--text-gray);
    line-height: 1.8;
    margin-bottom: 1.5rem;
}

.modal-btn-primary {
    display: block;
    width: 100%;
    padding: 1rem;
    background: var(--primary);
    color: white;
    border: none;
    border-radius: var(--radius-sm);
    font-size: 1rem;
    font-weight: 600;
    cursor: pointer;
    transition: var(--transition);
}

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

/* ========== 响应式设计 ========== */
@media (max-width: 1024px) {
    .products-grid {
        grid-template-columns: repeat(2, 1fr);
    }
    
    .features-grid {
        grid-template-columns: repeat(2, 1fr);
    }
    
    .contact-info {
        grid-template-columns: repeat(2, 1fr);
    }
}

@media (max-width: 768px) {
    .mobile-menu-btn {
        display: block;
    }
    
    .nav {
        display: none;
        position: absolute;
        top: 70px;
        left: 0;
        width: 100%;
        background: white;
        box-shadow: var(--shadow-md);
        padding: 1rem 0;
    }
    
    .nav.active {
        display: block;
    }
    
    .nav ul {
        flex-direction: column;
        gap: 0;
    }
    
    .nav a {
        display: block;
        padding: 0.8rem 2rem;
        border-radius: 0;
    }
    
    .hero-content h2 {
        font-size: 2rem;
    }
    
    .hero-desc {
        font-size: 1rem;
    }
    
    .section-title {
        font-size: 1.8rem;
    }
    
    .products-grid {
        grid-template-columns: 1fr;
        gap: 1.5rem;
    }
    
    .modal-body {
        grid-template-columns: 1fr;
    }
    
    .modal-image img {
        min-height: 200px;
    }
    
    .about-stats {
        gap: 1.5rem;
    }
    
    .footer-content {
        grid-template-columns: 1fr;
        gap: 2rem;
    }
}

@media (max-width: 480px) {
    .hero-content {
        padding: 60px 16px;
    }
    
    .hero-content h2 {
        font-size: 1.6rem;
    }
    
    .hero-buttons {
        flex-direction: column;
    }
    
    .btn-primary, .btn-outline {
        width: 100%;
        text-align: center;
    }
    
    .features-grid {
        grid-template-columns: 1fr 1fr;
        gap: 1rem;
    }
    
    .feature-item {
        padding: 1.5rem 1rem;
    }
    
    .about-stats {
        flex-direction: column;
        gap: 1rem;
    }
    
    .contact-info {
        grid-template-columns: 1fr;
    }
}