/* ==================== 全局样式 ==================== */
:root {
    --primary-color: #ff6b35;
    --primary-dark: #e55a2b;
    --primary-light: #ff8c5a;
    --secondary-color: #1e3a5f;
    --secondary-light: #2d4f7c;
    --accent-color: #ffd23f;
    --text-dark: #1a1a1a;
    --text-light: #666666;
    --bg-light: #f5f7fa;
    --bg-white: #ffffff;
    --border-color: #e0e0e0;
    --gradient-primary: linear-gradient(135deg, #ff6b35 0%, #ff8c5a 100%);
    --gradient-secondary: linear-gradient(135deg, #1e3a5f 0%, #2d4f7c 100%);
    --gradient-hero: linear-gradient(135deg, #ff6b35 0%, #ff8c5a 50%, #1e3a5f 100%);
    --shadow-sm: 0 2px 4px rgba(0, 0, 0, 0.1);
    --shadow-md: 0 4px 12px rgba(0, 0, 0, 0.15);
    --shadow-lg: 0 8px 24px rgba(0, 0, 0, 0.2);
    --shadow-xl: 0 12px 36px rgba(0, 0, 0, 0.25);
}

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

html {
    scroll-behavior: smooth;
}

body {
    font-family: -apple-system, BlinkMacSystemFont, 'Segoe UI', 'PingFang SC', 'Hiragino Sans GB', 'Microsoft YaHei', sans-serif;
    line-height: 1.6;
    color: var(--text-dark);
    background-color: var(--bg-white);
    overflow-x: hidden;
}

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

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

a {
    text-decoration: none;
    color: inherit;
    transition: all 0.3s ease;
}

/* ==================== 导航栏 ==================== */
.header {
    position: fixed;
    top: 0;
    left: 0;
    right: 0;
    background: rgba(255, 255, 255, 0.98);
    backdrop-filter: blur(10px);
    box-shadow: var(--shadow-sm);
    z-index: 1000;
    transition: all 0.3s ease;
}

.navbar {
    display: flex;
    justify-content: space-between;
    align-items: center;
    padding: 1rem 20px;
}

.nav-brand {
    display: flex;
    align-items: center;
    gap: 12px;
    font-weight: 700;
    font-size: 1.25rem;
    color: var(--secondary-color);
}

.logo-icon {
    width: 45px;
    height: 45px;
    background: var(--gradient-primary);
    color: white;
    border-radius: 12px;
    display: flex;
    align-items: center;
    justify-content: center;
    font-weight: 700;
    font-size: 1.5rem;
    box-shadow: var(--shadow-md);
}

.nav-menu {
    display: flex;
    list-style: none;
    gap: 2rem;
    align-items: center;
}

.nav-link {
    position: relative;
    color: var(--text-dark);
    font-weight: 600;
    padding: 0.5rem 0;
    transition: color 0.3s ease;
}

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

.nav-link.active::after {
    content: '';
    position: absolute;
    bottom: 0;
    left: 0;
    right: 0;
    height: 3px;
    background: var(--gradient-primary);
    border-radius: 3px;
}

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

.menu-toggle span {
    width: 25px;
    height: 3px;
    background: var(--text-dark);
    border-radius: 2px;
    transition: all 0.3s ease;
}

/* ==================== 英雄区块 ==================== */
.hero {
    margin-top: 80px;
    padding: 100px 0;
    background: var(--gradient-hero);
    color: white;
    position: relative;
    overflow: hidden;
}

.hero::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    background: url('data:image/svg+xml,<svg width="100" height="100" xmlns="http://www.w3.org/2000/svg"><defs><pattern id="grid" width="100" height="100" patternUnits="userSpaceOnUse"><path d="M 100 0 L 0 0 0 100" fill="none" stroke="rgba(255,255,255,0.1)" stroke-width="1"/></pattern></defs><rect width="100%" height="100%" fill="url(%23grid)"/></svg>');
    opacity: 0.3;
}

.hero-content {
    position: relative;
    z-index: 1;
    text-align: center;
    max-width: 900px;
    margin: 0 auto;
}

.hero-badge {
    display: inline-block;
    padding: 0.75rem 2rem;
    background: rgba(255, 255, 255, 0.25);
    backdrop-filter: blur(10px);
    border-radius: 50px;
    font-size: 0.875rem;
    font-weight: 600;
    margin-bottom: 2rem;
    animation: fadeInUp 0.6s ease;
    border: 2px solid rgba(255, 255, 255, 0.3);
}

.hero-title {
    font-size: 3.5rem;
    font-weight: 900;
    margin-bottom: 1rem;
    line-height: 1.2;
    animation: fadeInUp 0.8s ease;
    text-shadow: 2px 2px 4px rgba(0, 0, 0, 0.2);
}

.hero-subtitle {
    font-size: 1.75rem;
    margin-bottom: 1.5rem;
    opacity: 0.95;
    animation: fadeInUp 1s ease;
    font-weight: 600;
}

.hero-description {
    font-size: 1.125rem;
    line-height: 1.8;
    margin-bottom: 2.5rem;
    opacity: 0.9;
    animation: fadeInUp 1.2s ease;
}

.hero-actions {
    display: flex;
    gap: 1rem;
    justify-content: center;
    animation: fadeInUp 1.4s ease;
}

.hero-image {
    display: none;
}

/* ==================== 按钮 ==================== */
.btn {
    display: inline-block;
    padding: 1rem 2.5rem;
    border-radius: 50px;
    font-weight: 700;
    font-size: 1rem;
    border: none;
    cursor: pointer;
    transition: all 0.3s ease;
    text-align: center;
    box-shadow: var(--shadow-md);
}

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

.btn-primary:hover {
    transform: translateY(-3px);
    box-shadow: var(--shadow-lg);
    background: var(--accent-color);
    color: var(--text-dark);
}

.btn-secondary {
    background: rgba(255, 255, 255, 0.2);
    color: white;
    backdrop-filter: blur(10px);
    border: 2px solid rgba(255, 255, 255, 0.4);
}

.btn-secondary:hover {
    background: rgba(255, 255, 255, 0.3);
    transform: translateY(-3px);
}

.btn-block {
    width: 100%;
}

/* ==================== 通用区块样式 ==================== */
section {
    padding: 80px 0;
}

.section-header {
    text-align: center;
    margin-bottom: 4rem;
}

.section-tag {
    display: inline-block;
    padding: 0.5rem 1.5rem;
    background: var(--gradient-primary);
    color: white;
    border-radius: 50px;
    font-size: 0.875rem;
    font-weight: 700;
    margin-bottom: 1rem;
    box-shadow: var(--shadow-md);
}

.section-title {
    font-size: 2.5rem;
    font-weight: 900;
    margin-bottom: 1rem;
    color: var(--secondary-color);
}

.section-description {
    font-size: 1.125rem;
    color: var(--text-light);
    max-width: 700px;
    margin: 0 auto;
}

/* ==================== 关于区块 ==================== */
.about-section {
    background: var(--bg-light);
}

.about-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
    gap: 2rem;
}

.about-card {
    background: white;
    border-radius: 20px;
    padding: 2rem;
    box-shadow: var(--shadow-md);
    transition: all 0.3s ease;
    text-align: center;
    border-top: 4px solid var(--primary-color);
}

.about-card:hover {
    transform: translateY(-10px);
    box-shadow: var(--shadow-xl);
}

.about-card .card-image {
    width: 100%;
    height: 220px;
    border-radius: 16px;
    overflow: hidden;
    margin-bottom: 1.5rem;
    box-shadow: var(--shadow-md);
}

.about-card .card-image img {
    width: 100%;
    height: 100%;
    object-fit: cover;
    transition: transform 0.3s ease;
}

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

.about-card h3 {
    font-size: 1.5rem;
    margin-bottom: 1rem;
    color: var(--secondary-color);
    font-weight: 800;
}

.about-card p {
    color: var(--text-light);
    line-height: 1.8;
}

/* ==================== 产品区块 ==================== */
.products-section {
    background: white;
}

.products-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(280px, 1fr));
    gap: 2rem;
}

.product-card {
    background: white;
    border-radius: 20px;
    overflow: hidden;
    box-shadow: var(--shadow-md);
    transition: all 0.3s ease;
    display: flex;
    flex-direction: column;
    border: 2px solid transparent;
}

.product-card:hover {
    transform: translateY(-10px);
    box-shadow: var(--shadow-xl);
    border-color: var(--primary-color);
}

.product-image {
    width: 100%;
    height: 240px;
    overflow: hidden;
    position: relative;
}

.product-image::after {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    background: var(--gradient-primary);
    opacity: 0;
    transition: opacity 0.3s ease;
}

.product-card:hover .product-image::after {
    opacity: 0.2;
}

.product-image img {
    width: 100%;
    height: 100%;
    object-fit: cover;
    transition: transform 0.3s ease;
}

.product-card:hover .product-image img {
    transform: scale(1.15);
}

.product-content {
    padding: 1.5rem;
    flex: 1;
    display: flex;
    flex-direction: column;
}

.product-category {
    display: inline-block;
    padding: 0.375rem 1rem;
    background: var(--gradient-primary);
    color: white;
    border-radius: 20px;
    font-size: 0.75rem;
    font-weight: 700;
    margin-bottom: 1rem;
    width: fit-content;
}

.product-content h3 {
    font-size: 1.5rem;
    margin-bottom: 0.75rem;
    color: var(--secondary-color);
    font-weight: 800;
}

.product-content p {
    color: var(--text-light);
    margin-bottom: 1rem;
    flex: 1;
    line-height: 1.7;
}

.product-link {
    color: var(--primary-color);
    font-weight: 700;
    display: inline-flex;
    align-items: center;
    gap: 0.5rem;
}

.product-link:hover {
    gap: 1rem;
    color: var(--primary-dark);
}

/* ==================== 新闻区块 ==================== */
.news-section {
    background: var(--bg-light);
}

.news-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(320px, 1fr));
    gap: 2rem;
}

.news-card {
    background: white;
    border-radius: 20px;
    overflow: hidden;
    box-shadow: var(--shadow-md);
    transition: all 0.3s ease;
    display: flex;
    flex-direction: column;
}

.news-card:hover {
    transform: translateY(-10px);
    box-shadow: var(--shadow-xl);
}

.news-image {
    width: 100%;
    height: 240px;
    overflow: hidden;
}

.news-image img {
    width: 100%;
    height: 100%;
    object-fit: cover;
    transition: transform 0.3s ease;
}

.news-card:hover .news-image img {
    transform: scale(1.15);
}

.news-content {
    padding: 1.5rem;
    flex: 1;
    display: flex;
    flex-direction: column;
}

.news-date {
    color: var(--primary-color);
    font-size: 0.875rem;
    font-weight: 700;
    margin-bottom: 0.75rem;
}

.news-content h3 {
    font-size: 1.375rem;
    margin-bottom: 1rem;
    color: var(--secondary-color);
    line-height: 1.4;
    font-weight: 800;
}

.news-content p {
    color: var(--text-light);
    margin-bottom: 1rem;
    flex: 1;
    line-height: 1.7;
}

.news-link {
    color: var(--primary-color);
    font-weight: 700;
    display: inline-flex;
    align-items: center;
    gap: 0.5rem;
}

.news-link:hover {
    gap: 1rem;
    color: var(--primary-dark);
}

/* ==================== 合作伙伴 ==================== */
.partners-section {
    background: white;
    padding: 60px 0;
}

.partners-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(200px, 1fr));
    gap: 2rem;
    align-items: center;
}

.partner-item {
    padding: 1.5rem;
    background: var(--bg-light);
    border-radius: 16px;
    display: flex;
    align-items: center;
    justify-content: center;
    transition: all 0.3s ease;
    height: 120px;
}

.partner-item:hover {
    background: white;
    box-shadow: var(--shadow-md);
    transform: translateY(-4px);
}

.partner-item img {
    max-width: 100%;
    max-height: 60px;
    object-fit: contain;
    filter: grayscale(100%);
    opacity: 0.6;
    transition: all 0.3s ease;
}

.partner-item:hover img {
    filter: grayscale(0%);
    opacity: 1;
}

/* ==================== 页脚 ==================== */
.footer {
    background: var(--secondary-color);
    color: white;
    padding: 60px 0 20px;
}

.footer-content {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(250px, 1fr));
    gap: 3rem;
    margin-bottom: 3rem;
}

.footer-col h3,
.footer-col h4 {
    margin-bottom: 1.5rem;
    font-size: 1.25rem;
    color: var(--accent-color);
}

.footer-col p {
    color: rgba(255, 255, 255, 0.8);
    line-height: 1.8;
}

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

.footer-col ul li {
    margin-bottom: 0.75rem;
    color: rgba(255, 255, 255, 0.8);
}

.footer-col ul li a {
    color: rgba(255, 255, 255, 0.8);
    transition: color 0.3s ease;
}

.footer-col ul li a:hover {
    color: var(--accent-color);
    padding-left: 5px;
}

.footer-bottom {
    text-align: center;
    padding-top: 2rem;
    border-top: 1px solid rgba(255, 255, 255, 0.1);
    color: rgba(255, 255, 255, 0.6);
}

/* ==================== 产品页面样式 ==================== */
.page-header {
    margin-top: 80px;
    padding: 80px 0;
    background: var(--gradient-hero);
    color: white;
    text-align: center;
}

.page-header h1 {
    font-size: 3rem;
    font-weight: 900;
    margin-bottom: 1rem;
    text-shadow: 2px 2px 4px rgba(0, 0, 0, 0.2);
}

.page-header p {
    font-size: 1.25rem;
    opacity: 0.95;
}

.products-filter-section {
    padding: 2rem 0;
    background: var(--bg-light);
    position: sticky;
    top: 80px;
    z-index: 100;
    box-shadow: var(--shadow-sm);
}

.filter-tabs {
    display: flex;
    gap: 1rem;
    justify-content: center;
    flex-wrap: wrap;
}

.filter-btn {
    padding: 0.75rem 1.5rem;
    background: white;
    border: 2px solid var(--border-color);
    border-radius: 50px;
    font-weight: 700;
    cursor: pointer;
    transition: all 0.3s ease;
    color: var(--text-dark);
}

.filter-btn:hover,
.filter-btn.active {
    background: var(--gradient-primary);
    color: white;
    border-color: transparent;
    transform: translateY(-2px);
    box-shadow: var(--shadow-md);
}

.products-list-section {
    padding: 60px 0;
}

.products-list {
    display: flex;
    flex-direction: column;
    gap: 3rem;
}

.product-item {
    display: grid;
    grid-template-columns: 400px 1fr;
    gap: 3rem;
    background: white;
    border-radius: 20px;
    padding: 2rem;
    box-shadow: var(--shadow-md);
    transition: all 0.3s ease;
    border-left: 5px solid var(--primary-color);
}

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

.product-item.hide {
    display: none;
}

.product-item-image {
    width: 100%;
    height: 300px;
    border-radius: 16px;
    overflow: hidden;
    box-shadow: var(--shadow-md);
}

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

.product-item-content {
    display: flex;
    flex-direction: column;
}

.product-item-category {
    display: inline-block;
    padding: 0.5rem 1rem;
    background: var(--gradient-primary);
    color: white;
    border-radius: 20px;
    font-size: 0.875rem;
    font-weight: 700;
    margin-bottom: 1rem;
    width: fit-content;
}

.product-item-content h3 {
    font-size: 2rem;
    margin-bottom: 1rem;
    color: var(--secondary-color);
    font-weight: 900;
}

.product-item-content > p {
    color: var(--text-light);
    margin-bottom: 1.5rem;
    line-height: 1.8;
    font-size: 1.0625rem;
}

.product-features {
    list-style: none;
    margin-bottom: 2rem;
}

.product-features li {
    padding: 0.5rem 0;
    color: var(--text-light);
    position: relative;
    padding-left: 1.5rem;
}

.product-features li::before {
    content: '✓';
    position: absolute;
    left: 0;
    color: var(--primary-color);
    font-weight: bold;
    font-size: 1.2rem;
}

/* ==================== 关于页面样式 ==================== */
.company-intro-section {
    padding: 80px 0;
    background: white;
}

.intro-content {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 4rem;
    align-items: center;
}

.intro-image {
    border-radius: 20px;
    overflow: hidden;
    box-shadow: var(--shadow-xl);
}

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

.intro-text h2 {
    font-size: 2.5rem;
    margin-bottom: 1rem;
    color: var(--secondary-color);
    font-weight: 900;
}

.intro-lead {
    font-size: 1.25rem;
    color: var(--primary-color);
    font-weight: 700;
    margin-bottom: 1.5rem;
}

.intro-text p {
    color: var(--text-light);
    line-height: 1.8;
    margin-bottom: 1.5rem;
    font-size: 1.0625rem;
}

.history-section {
    padding: 80px 0;
    background: var(--bg-light);
}

.timeline {
    max-width: 900px;
    margin: 0 auto;
    position: relative;
}

.timeline::before {
    content: '';
    position: absolute;
    left: 100px;
    top: 0;
    bottom: 0;
    width: 4px;
    background: var(--gradient-primary);
    border-radius: 2px;
}

.timeline-item {
    display: flex;
    gap: 3rem;
    margin-bottom: 4rem;
    position: relative;
}

.timeline-year {
    width: 80px;
    height: 80px;
    background: var(--gradient-primary);
    color: white;
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 1.25rem;
    font-weight: 900;
    flex-shrink: 0;
    box-shadow: var(--shadow-lg);
    position: relative;
    z-index: 1;
}

.timeline-content {
    flex: 1;
    background: white;
    border-radius: 16px;
    padding: 2rem;
    box-shadow: var(--shadow-md);
}

.timeline-image {
    width: 100%;
    height: 200px;
    border-radius: 12px;
    overflow: hidden;
    margin-bottom: 1.5rem;
}

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

.timeline-content h3 {
    font-size: 1.5rem;
    margin-bottom: 1rem;
    color: var(--secondary-color);
    font-weight: 800;
}

.timeline-content p {
    color: var(--text-light);
    line-height: 1.8;
}

.team-section {
    padding: 80px 0;
    background: white;
}

.team-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
    gap: 2rem;
}

.team-member {
    background: white;
    border-radius: 20px;
    padding: 2rem;
    box-shadow: var(--shadow-md);
    transition: all 0.3s ease;
    text-align: center;
    border-top: 4px solid var(--primary-color);
}

.team-member:hover {
    transform: translateY(-10px);
    box-shadow: var(--shadow-xl);
}

.member-image {
    width: 200px;
    height: 200px;
    border-radius: 50%;
    overflow: hidden;
    margin: 0 auto 1.5rem;
    border: 4px solid var(--primary-light);
    box-shadow: var(--shadow-md);
}

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

.member-info h3 {
    font-size: 1.5rem;
    margin-bottom: 0.5rem;
    color: var(--secondary-color);
    font-weight: 800;
}

.member-role {
    color: var(--primary-color);
    font-weight: 700;
    margin-bottom: 1rem;
    display: block;
}

.member-desc {
    color: var(--text-light);
    line-height: 1.7;
}

.culture-section {
    padding: 80px 0;
    background: var(--bg-light);
}

.culture-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(250px, 1fr));
    gap: 2rem;
}

.culture-card {
    background: white;
    border-radius: 20px;
    padding: 2.5rem;
    text-align: center;
    box-shadow: var(--shadow-md);
    transition: all 0.3s ease;
    border-top: 4px solid var(--accent-color);
}

.culture-card:hover {
    transform: translateY(-10px);
    box-shadow: var(--shadow-xl);
}

.culture-icon {
    font-size: 3.5rem;
    margin-bottom: 1.5rem;
}

.culture-card h3 {
    font-size: 1.5rem;
    margin-bottom: 1rem;
    color: var(--secondary-color);
    font-weight: 800;
}

.culture-card p {
    color: var(--text-light);
    line-height: 1.8;
}

/* ==================== 联系页面样式 ==================== */
.contact-section {
    padding: 80px 0;
    background: white;
}

.contact-wrapper {
    display: grid;
    grid-template-columns: 1.2fr 1fr;
    gap: 4rem;
}

.contact-form-wrapper h2,
.contact-info-wrapper h2 {
    font-size: 2rem;
    margin-bottom: 1rem;
    color: var(--secondary-color);
    font-weight: 900;
}

.form-intro {
    color: var(--text-light);
    margin-bottom: 2rem;
    line-height: 1.8;
}

.contact-form {
    display: flex;
    flex-direction: column;
    gap: 1.5rem;
}

.form-row {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 1.5rem;
}

.form-group {
    display: flex;
    flex-direction: column;
}

.form-group label {
    margin-bottom: 0.5rem;
    font-weight: 700;
    color: var(--text-dark);
}

.required {
    color: var(--primary-color);
}

.form-group input,
.form-group select,
.form-group textarea {
    padding: 0.875rem 1rem;
    border: 2px solid var(--border-color);
    border-radius: 12px;
    font-size: 1rem;
    font-family: inherit;
    transition: all 0.3s ease;
}

.form-group input:focus,
.form-group select:focus,
.form-group textarea:focus {
    outline: none;
    border-color: var(--primary-color);
    box-shadow: 0 0 0 3px rgba(255, 107, 53, 0.1);
}

.form-group textarea {
    resize: vertical;
}

.form-message {
    margin-top: 1rem;
    padding: 1rem;
    border-radius: 12px;
    display: none;
}

.form-message.success {
    background: #d1fae5;
    color: #065f46;
    display: block;
}

.form-message.error {
    background: #fee2e2;
    color: #991b1b;
    display: block;
}

.contact-info-card {
    background: var(--bg-light);
    border-radius: 16px;
    padding: 2rem;
    margin-bottom: 2rem;
}

.info-item {
    display: flex;
    gap: 1.5rem;
    margin-bottom: 2rem;
}

.info-item:last-child {
    margin-bottom: 0;
}

.info-icon {
    font-size: 2rem;
    flex-shrink: 0;
}

.info-content h3 {
    font-size: 1.25rem;
    margin-bottom: 0.5rem;
    color: var(--secondary-color);
    font-weight: 800;
}

.info-content p {
    color: var(--text-light);
    line-height: 1.8;
}

.map-section {
    margin-bottom: 2rem;
}

.map-placeholder {
    position: relative;
    width: 100%;
    height: 300px;
    border-radius: 16px;
    overflow: hidden;
    box-shadow: var(--shadow-md);
}

.map-placeholder img {
    width: 100%;
    height: 100%;
    object-fit: cover;
}

.map-overlay {
    position: absolute;
    bottom: 0;
    left: 0;
    right: 0;
    background: rgba(30, 58, 95, 0.9);
    color: white;
    padding: 1.5rem;
    text-align: center;
}

.map-overlay p {
    margin: 0.25rem 0;
}

.service-hours {
    background: var(--bg-light);
    border-radius: 16px;
    padding: 2rem;
}

.service-hours h3 {
    font-size: 1.5rem;
    margin-bottom: 1.5rem;
    color: var(--secondary-color);
    font-weight: 800;
}

.hours-grid {
    display: flex;
    flex-direction: column;
    gap: 1rem;
    margin-bottom: 1rem;
}

.hours-item {
    display: flex;
    justify-content: space-between;
    padding: 1rem;
    background: white;
    border-radius: 12px;
}

.hours-day {
    font-weight: 700;
    color: var(--text-dark);
}

.hours-time {
    color: var(--primary-color);
    font-weight: 700;
}

.hours-note {
    color: var(--text-light);
    font-size: 0.875rem;
    margin-top: 1rem;
}

.faq-section {
    padding: 80px 0;
    background: var(--bg-light);
}

.faq-list {
    max-width: 900px;
    margin: 0 auto;
}

.faq-item {
    background: white;
    border-radius: 16px;
    margin-bottom: 1rem;
    overflow: hidden;
    box-shadow: var(--shadow-sm);
    border-left: 4px solid var(--primary-color);
}

.faq-question {
    display: flex;
    justify-content: space-between;
    align-items: center;
    padding: 1.5rem;
    cursor: pointer;
    transition: all 0.3s ease;
}

.faq-question:hover {
    background: var(--bg-light);
}

.faq-question h3 {
    font-size: 1.25rem;
    color: var(--secondary-color);
    margin: 0;
    font-weight: 800;
}

.faq-toggle {
    font-size: 1.5rem;
    color: var(--primary-color);
    font-weight: bold;
    transition: transform 0.3s ease;
}

.faq-item.active .faq-toggle {
    transform: rotate(45deg);
}

.faq-answer {
    max-height: 0;
    overflow: hidden;
    transition: max-height 0.3s ease;
}

.faq-item.active .faq-answer {
    max-height: 500px;
}

.faq-answer p {
    padding: 0 1.5rem 1.5rem;
    color: var(--text-light);
    line-height: 1.8;
}

/* ==================== 动画 ==================== */
@keyframes fadeInUp {
    from {
        opacity: 0;
        transform: translateY(30px);
    }
    to {
        opacity: 1;
        transform: translateY(0);
    }
}

.fade-in-up {
    animation: fadeInUp 0.6s ease;
}

/* ==================== 响应式设计 ==================== */
@media (max-width: 968px) {
    .hero-title {
        font-size: 2.5rem;
    }
    
    .section-title {
        font-size: 2rem;
    }
    
    .intro-content {
        grid-template-columns: 1fr;
    }
    
    .intro-image {
        order: -1;
    }
    
    .contact-wrapper {
        grid-template-columns: 1fr;
    }
    
    .product-item {
        grid-template-columns: 1fr;
    }
    
    .timeline::before {
        left: 40px;
    }
    
    .timeline-year {
        width: 60px;
        height: 60px;
        font-size: 1rem;
    }
    
    .form-row {
        grid-template-columns: 1fr;
    }
}

@media (max-width: 768px) {
    .nav-menu {
        position: fixed;
        top: 80px;
        left: -100%;
        width: 100%;
        background: white;
        flex-direction: column;
        padding: 2rem;
        box-shadow: var(--shadow-lg);
        transition: left 0.3s ease;
        gap: 0;
    }
    
    .nav-menu.active {
        left: 0;
    }
    
    .nav-menu li {
        width: 100%;
        border-bottom: 1px solid var(--border-color);
    }
    
    .nav-link {
        display: block;
        padding: 1rem 0;
    }
    
    .menu-toggle {
        display: flex;
    }
    
    .menu-toggle.active span:nth-child(1) {
        transform: rotate(45deg) translate(8px, 8px);
    }
    
    .menu-toggle.active span:nth-child(2) {
        opacity: 0;
    }
    
    .menu-toggle.active span:nth-child(3) {
        transform: rotate(-45deg) translate(7px, -7px);
    }
    
    .hero {
        padding: 60px 0;
    }
    
    .hero-title {
        font-size: 2rem;
    }
    
    .hero-subtitle {
        font-size: 1.25rem;
    }
    
    .hero-description {
        font-size: 1rem;
    }
    
    .hero-actions {
        flex-direction: column;
    }
    
    .page-header h1 {
        font-size: 2rem;
    }
    
    .section-title {
        font-size: 1.75rem;
    }
    
    .about-grid,
    .products-grid,
    .news-grid {
        grid-template-columns: 1fr;
    }
    
    .partners-grid {
        grid-template-columns: repeat(2, 1fr);
    }
    
    .team-grid {
        grid-template-columns: 1fr;
    }
    
    .culture-grid {
        grid-template-columns: 1fr;
    }
    
    .filter-tabs {
        justify-content: flex-start;
        overflow-x: auto;
        padding-bottom: 0.5rem;
    }
    
    .filter-btn {
        white-space: nowrap;
    }
    
    section {
        padding: 60px 0;
    }
}

@media (max-width: 480px) {
    .container {
        padding: 0 15px;
    }
    
    .hero-title {
        font-size: 1.75rem;
    }
    
    .section-title {
        font-size: 1.5rem;
    }
    
    .about-card,
    .product-card,
    .news-card {
        padding: 1.5rem;
    }
    
    .product-item {
        padding: 1.5rem;
    }
    
    .timeline-item {
        flex-direction: column;
        gap: 1.5rem;
    }
    
    .timeline::before {
        display: none;
    }
    
    .member-image {
        width: 150px;
        height: 150px;
    }
}