/* ===== 基础样式 ===== */
* {
    margin: 0;
    padding: 0;
    box-sizing: border-box;
}

:root {
    /* 主色调：橙色 + 蓝色 */
    --primary-color: #ff6b35;
    --secondary-color: #004e89;
    --accent-color: #ff8c42;
    --text-primary: #1a1a1a;
    --text-secondary: #666666;
    --text-light: #ffffff;
    --bg-light: #f5f7fa;
    --bg-white: #ffffff;
    --bg-dark: #0a1929;
    --border-color: #e0e0e0;
    --shadow: 0 4px 20px rgba(255, 107, 53, 0.15);
    --shadow-hover: 0 12px 40px rgba(255, 107, 53, 0.25);
    --gradient-primary: linear-gradient(135deg, #ff6b35 0%, #ff8c42 100%);
    --gradient-secondary: linear-gradient(135deg, #004e89 0%, #0066cc 100%);
    --gradient-hero: linear-gradient(135deg, #ff6b35 0%, #ff8c42 50%, #004e89 100%);
    --transition: all 0.3s cubic-bezier(0.4, 0, 0.2, 1);
}

html {
    scroll-behavior: smooth;
}

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

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

/* ===== 导航栏 ===== */
.header {
    position: fixed;
    top: 0;
    left: 0;
    right: 0;
    background: rgba(255, 255, 255, 0.98);
    backdrop-filter: blur(15px);
    box-shadow: var(--shadow);
    z-index: 1000;
    transition: var(--transition);
}

.navbar {
    display: flex;
    justify-content: space-between;
    align-items: center;
    padding: 1rem 0;
}

.nav-brand {
    display: flex;
    align-items: center;
    gap: 0.75rem;
    text-decoration: none;
    color: var(--text-primary);
    font-weight: 700;
    font-size: 1.25rem;
    transition: var(--transition);
}

.nav-brand:hover {
    transform: scale(1.05);
}

.logo-icon {
    width: 45px;
    height: 45px;
    background: var(--gradient-primary);
    color: var(--text-light);
    display: flex;
    align-items: center;
    justify-content: center;
    border-radius: 12px;
    font-weight: 800;
    font-size: 1rem;
    box-shadow: 0 4px 15px rgba(255, 107, 53, 0.3);
}

.brand-name {
    color: var(--primary-color);
    background: var(--gradient-primary);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
}

.nav-menu {
    display: flex;
    list-style: none;
    gap: 2.5rem;
    align-items: center;
}

.nav-link {
    text-decoration: none;
    color: var(--text-primary);
    font-weight: 600;
    transition: var(--transition);
    position: relative;
    font-size: 1rem;
}

.nav-link::after {
    content: '';
    position: absolute;
    bottom: -8px;
    left: 0;
    width: 0;
    height: 3px;
    background: var(--gradient-secondary);
    border-radius: 2px;
    transition: var(--transition);
}

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

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

.menu-toggle {
    display: none;
    flex-direction: column;
    gap: 6px;
    background: none;
    border: none;
    cursor: pointer;
    padding: 8px;
}

.menu-toggle span {
    width: 28px;
    height: 3px;
    background: var(--primary-color);
    border-radius: 3px;
    transition: var(--transition);
}

/* ===== 按钮样式 ===== */
.btn {
    display: inline-block;
    padding: 14px 32px;
    border-radius: 10px;
    text-decoration: none;
    font-weight: 600;
    transition: var(--transition);
    border: 2px solid transparent;
    cursor: pointer;
    font-size: 1rem;
    position: relative;
    overflow: hidden;
}

.btn-primary {
    background: var(--gradient-primary);
    color: var(--text-light);
    box-shadow: 0 4px 15px rgba(255, 107, 53, 0.3);
}

.btn-primary:hover {
    transform: translateY(-3px);
    box-shadow: 0 8px 25px rgba(255, 107, 53, 0.4);
}

.btn-primary::before {
    content: '';
    position: absolute;
    top: 50%;
    left: 50%;
    width: 0;
    height: 0;
    border-radius: 50%;
    background: rgba(255, 255, 255, 0.2);
    transform: translate(-50%, -50%);
    transition: width 0.6s, height 0.6s;
}

.btn-primary:hover::before {
    width: 300px;
    height: 300px;
}

.btn-outline {
    background: transparent;
    color: var(--primary-color);
    border-color: var(--primary-color);
}

.btn-outline:hover {
    background: var(--gradient-primary);
    color: var(--text-light);
    border-color: transparent;
    transform: translateY(-3px);
    box-shadow: 0 8px 25px rgba(255, 107, 53, 0.3);
}

.btn-block {
    width: 100%;
    text-align: center;
}

/* ===== 英雄区块 ===== */
.hero {
    position: relative;
    min-height: 100vh;
    display: flex;
    align-items: center;
    padding-top: 90px;
    overflow: hidden;
    background: linear-gradient(135deg, rgba(255, 107, 53, 0.05) 0%, rgba(0, 78, 137, 0.05) 100%);
}

.hero-background {
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    background: var(--gradient-hero);
    opacity: 0.03;
    z-index: -1;
}

.hero-content {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 5rem;
    align-items: center;
    padding: 4rem 0;
}

.hero-text {
    animation: fadeInUp 1s ease;
}

.hero-badge {
    display: inline-block;
    padding: 10px 20px;
    background: rgba(0, 78, 137, 0.15);
    color: var(--secondary-color);
    border-radius: 25px;
    font-size: 0.875rem;
    font-weight: 600;
    margin-bottom: 1.5rem;
    border: 1px solid rgba(0, 78, 137, 0.3);
}

.hero-title {
    font-size: 3.75rem;
    font-weight: 900;
    background: var(--gradient-primary);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
    margin-bottom: 1rem;
    line-height: 1.2;
}

.hero-subtitle {
    font-size: 1.75rem;
    color: var(--secondary-color);
    margin-bottom: 1.5rem;
    font-weight: 700;
}

.hero-description {
    font-size: 1.125rem;
    color: var(--text-secondary);
    margin-bottom: 2.5rem;
    line-height: 1.9;
}

.hero-actions {
    display: flex;
    gap: 1.25rem;
    flex-wrap: wrap;
}

.hero-image {
    animation: fadeInRight 1s ease;
}

.hero-card {
    position: relative;
    border-radius: 25px;
    overflow: hidden;
    box-shadow: 0 20px 60px rgba(255, 107, 53, 0.3);
    transform: perspective(1000px) rotateY(-8deg);
    transition: var(--transition);
    border: 3px solid rgba(0, 78, 137, 0.2);
}

.hero-card:hover {
    transform: perspective(1000px) rotateY(0deg) scale(1.05);
    box-shadow: 0 25px 70px rgba(255, 107, 53, 0.4);
}

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

/* ===== 通用区块样式 ===== */
.section-badge {
    display: inline-block;
    padding: 10px 20px;
    background: rgba(255, 107, 53, 0.1);
    color: var(--primary-color);
    border-radius: 25px;
    font-size: 0.875rem;
    font-weight: 600;
    margin-bottom: 1rem;
    border: 1px solid rgba(255, 107, 53, 0.2);
}

.section-title {
    font-size: 2.75rem;
    font-weight: 800;
    background: var(--gradient-primary);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
    margin-bottom: 1rem;
}

.section-description {
    font-size: 1.125rem;
    color: var(--text-secondary);
    margin-bottom: 3rem;
    line-height: 1.8;
}

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

/* ===== 介绍区块 ===== */
.intro-section {
    padding: 7rem 0;
    background: var(--bg-white);
}

.intro-content {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 5rem;
    align-items: center;
}

.intro-card {
    border-radius: 25px;
    overflow: hidden;
    box-shadow: var(--shadow-hover);
    transition: var(--transition);
    border: 3px solid rgba(0, 78, 137, 0.1);
}

.intro-card:hover {
    transform: translateY(-15px);
    box-shadow: 0 20px 50px rgba(255, 107, 53, 0.25);
}

.intro-card img {
    width: 100%;
    height: auto;
    display: block;
}

.intro-description {
    font-size: 1.125rem;
    color: var(--text-secondary);
    margin-bottom: 1.5rem;
    line-height: 1.9;
}

/* ===== 产品区块 ===== */
.products-section {
    padding: 7rem 0;
    background: var(--bg-light);
}

.products-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(280px, 1fr));
    gap: 2.5rem;
}

.product-card {
    background: var(--bg-white);
    border-radius: 25px;
    overflow: hidden;
    box-shadow: var(--shadow);
    transition: var(--transition);
    border: 2px solid rgba(0, 78, 137, 0.1);
}

.product-card:hover {
    transform: translateY(-12px);
    box-shadow: var(--shadow-hover);
    border-color: rgba(0, 78, 137, 0.3);
}

.product-image {
    width: 100%;
    height: 280px;
    overflow: hidden;
    background: var(--gradient-primary);
}

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

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

.product-content {
    padding: 2.5rem;
}

.product-title {
    font-size: 1.625rem;
    font-weight: 700;
    color: var(--primary-color);
    margin-bottom: 1rem;
}

.product-description {
    color: var(--text-secondary);
    margin-bottom: 1.5rem;
    line-height: 1.8;
}

.product-link {
    color: var(--secondary-color);
    text-decoration: none;
    font-weight: 600;
    transition: var(--transition);
    display: inline-flex;
    align-items: center;
    gap: 0.5rem;
}

.product-link:hover {
    color: var(--primary-color);
    gap: 0.75rem;
}

/* ===== 新闻区块 ===== */
.news-section {
    padding: 7rem 0;
    background: var(--bg-white);
}

.news-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(340px, 1fr));
    gap: 2.5rem;
}

.news-card {
    background: var(--bg-white);
    border-radius: 25px;
    overflow: hidden;
    box-shadow: var(--shadow);
    transition: var(--transition);
    border: 2px solid rgba(0, 78, 137, 0.1);
}

.news-card:hover {
    transform: translateY(-12px);
    box-shadow: var(--shadow-hover);
    border-color: rgba(0, 78, 137, 0.3);
}

.news-image {
    width: 100%;
    height: 220px;
    overflow: hidden;
    background: var(--gradient-primary);
}

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

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

.news-content {
    padding: 2.5rem;
}

.news-date {
    display: inline-block;
    color: var(--text-secondary);
    font-size: 0.875rem;
    margin-bottom: 1rem;
    font-weight: 500;
}

.news-title {
    font-size: 1.375rem;
    font-weight: 700;
    color: var(--primary-color);
    margin-bottom: 1rem;
    line-height: 1.5;
}

.news-excerpt {
    color: var(--text-secondary);
    margin-bottom: 1.5rem;
    line-height: 1.8;
}

.news-link {
    color: var(--secondary-color);
    text-decoration: none;
    font-weight: 600;
    transition: var(--transition);
    display: inline-flex;
    align-items: center;
    gap: 0.5rem;
}

.news-link:hover {
    color: var(--primary-color);
    gap: 0.75rem;
}

/* ===== 数据统计 ===== */
.stats-section {
    padding: 5rem 0;
    background: var(--gradient-primary);
    color: var(--text-light);
    position: relative;
    overflow: hidden;
}

.stats-section::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(255,255,255,0.05)" stroke-width="1"/></pattern></defs><rect width="100" height="100" fill="url(%23grid)"/></svg>');
    opacity: 0.3;
}

.stats-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(220px, 1fr));
    gap: 3rem;
    text-align: center;
    position: relative;
    z-index: 1;
}

.stat-item {
    padding: 2.5rem;
}

.stat-number {
    font-size: 4rem;
    font-weight: 900;
    color: var(--secondary-color);
    margin-bottom: 0.75rem;
    text-shadow: 0 2px 10px rgba(0, 78, 137, 0.3);
}

.stat-label {
    font-size: 1.25rem;
    color: rgba(255, 255, 255, 0.95);
    font-weight: 600;
}

/* ===== 页脚 ===== */
.footer {
    background: var(--bg-dark);
    color: var(--text-light);
    padding: 5rem 0 2rem;
    position: relative;
}

.footer-content {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(250px, 1fr));
    gap: 3rem;
    margin-bottom: 2.5rem;
}

.footer-brand {
    display: flex;
    align-items: center;
    gap: 0.75rem;
    margin-bottom: 1.5rem;
}

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

.footer-title {
    font-size: 1.375rem;
    font-weight: 700;
    margin-bottom: 1.25rem;
    color: var(--accent-color);
}

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

.footer-links li {
    margin-bottom: 0.875rem;
}

.footer-links a {
    color: rgba(255, 255, 255, 0.8);
    text-decoration: none;
    transition: var(--transition);
}

.footer-links a:hover {
    color: var(--accent-color);
    padding-left: 8px;
}

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

.footer-contact li {
    color: rgba(255, 255, 255, 0.8);
    margin-bottom: 0.875rem;
    line-height: 1.8;
}

.footer-bottom {
    text-align: center;
    padding-top: 2.5rem;
    border-top: 1px solid rgba(255, 255, 255, 0.2);
    color: rgba(255, 255, 255, 0.7);
}

/* ===== 页面标题 ===== */
.page-header {
    padding: 10rem 0 5rem;
    background: var(--gradient-primary);
    color: var(--text-light);
    text-align: center;
    margin-top: 70px;
    position: relative;
    overflow: hidden;
}

.page-header::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(255,255,255,0.05)" stroke-width="1"/></pattern></defs><rect width="100" height="100" fill="url(%23grid)"/></svg>');
    opacity: 0.3;
}

.page-title {
    font-size: 3.5rem;
    font-weight: 900;
    margin-bottom: 1rem;
    position: relative;
    z-index: 1;
}

.page-subtitle {
    font-size: 1.375rem;
    color: rgba(255, 255, 255, 0.95);
    position: relative;
    z-index: 1;
}

/* ===== 产品页样式 ===== */
.filter-section {
    padding: 2.5rem 0;
    background: var(--bg-white);
    border-bottom: 2px solid var(--border-color);
    position: sticky;
    top: 70px;
    z-index: 100;
    backdrop-filter: blur(10px);
    background: rgba(255, 255, 255, 0.98);
}

.filter-tabs {
    display: flex;
    justify-content: center;
    gap: 1.25rem;
    flex-wrap: wrap;
}

.filter-btn {
    padding: 12px 28px;
    border: 2px solid var(--border-color);
    background: var(--bg-white);
    color: var(--text-primary);
    border-radius: 30px;
    cursor: pointer;
    font-weight: 600;
    transition: var(--transition);
    font-size: 1rem;
}

.filter-btn:hover,
.filter-btn.active {
    background: var(--gradient-primary);
    color: var(--text-light);
    border-color: var(--primary-color);
    transform: translateY(-2px);
    box-shadow: 0 4px 15px rgba(255, 107, 53, 0.3);
}

.products-list-section {
    padding: 5rem 0;
    background: var(--bg-light);
}

.product-category {
    margin-bottom: 6rem;
}

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

.category-title {
    font-size: 2.75rem;
    font-weight: 800;
    background: var(--gradient-primary);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
    margin-bottom: 1rem;
}

.category-description {
    font-size: 1.125rem;
    color: var(--text-secondary);
}

.products-list-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(280px, 1fr));
    gap: 2.5rem;
}

.product-item-card {
    background: var(--bg-white);
    border-radius: 25px;
    overflow: hidden;
    box-shadow: var(--shadow);
    transition: var(--transition);
    border: 2px solid rgba(0, 78, 137, 0.1);
}

.product-item-card:hover {
    transform: translateY(-12px);
    box-shadow: var(--shadow-hover);
    border-color: rgba(0, 78, 137, 0.3);
}

.product-item-image {
    width: 100%;
    height: 280px;
    overflow: hidden;
    background: var(--gradient-primary);
}

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

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

.product-item-content {
    padding: 2.5rem;
}

.product-item-title {
    font-size: 1.625rem;
    font-weight: 700;
    color: var(--primary-color);
    margin-bottom: 1rem;
}

.product-item-description {
    color: var(--text-secondary);
    margin-bottom: 1.5rem;
    line-height: 1.8;
}

.product-item-tags {
    display: flex;
    gap: 0.75rem;
    flex-wrap: wrap;
}

.tag {
    padding: 6px 14px;
    background: rgba(255, 107, 53, 0.1);
    color: var(--primary-color);
    border-radius: 20px;
    font-size: 0.875rem;
    font-weight: 600;
    border: 1px solid rgba(255, 107, 53, 0.2);
}

/* ===== 关于我们页样式 ===== */
.about-intro-section {
    padding: 5rem 0;
    background: var(--bg-white);
}

.about-intro-content {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 5rem;
    align-items: center;
}

.about-intro-card {
    border-radius: 25px;
    overflow: hidden;
    box-shadow: var(--shadow-hover);
    border: 3px solid rgba(0, 78, 137, 0.1);
}

.about-intro-card img {
    width: 100%;
    height: auto;
    display: block;
}

.about-intro-description {
    font-size: 1.125rem;
    color: var(--text-secondary);
    margin-bottom: 1.5rem;
    line-height: 1.9;
}

.history-section {
    padding: 7rem 0;
    background: var(--bg-light);
}

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

.history-timeline::before {
    content: '';
    position: absolute;
    left: 50%;
    top: 0;
    bottom: 0;
    width: 4px;
    background: var(--gradient-primary);
    transform: translateX(-50%);
    border-radius: 2px;
}

.timeline-item {
    display: flex;
    margin-bottom: 5rem;
    position: relative;
}

.timeline-item:nth-child(odd) {
    flex-direction: row;
}

.timeline-item:nth-child(even) {
    flex-direction: row-reverse;
}

.timeline-year {
    width: 130px;
    height: 130px;
    background: var(--gradient-primary);
    color: var(--text-light);
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 1.75rem;
    font-weight: 900;
    position: relative;
    z-index: 2;
    flex-shrink: 0;
    box-shadow: 0 8px 25px rgba(255, 107, 53, 0.3);
    border: 4px solid var(--secondary-color);
}

.timeline-content {
    flex: 1;
    padding: 2.5rem;
    background: var(--bg-white);
    border-radius: 25px;
    box-shadow: var(--shadow);
    margin: 0 2.5rem;
    border: 2px solid rgba(0, 78, 137, 0.1);
}

.timeline-title {
    font-size: 1.625rem;
    font-weight: 700;
    color: var(--primary-color);
    margin-bottom: 1rem;
}

.timeline-description {
    color: var(--text-secondary);
    line-height: 1.8;
    margin-bottom: 1.5rem;
}

.timeline-image {
    border-radius: 20px;
    overflow: hidden;
    margin-top: 1.5rem;
}

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

.team-section {
    padding: 7rem 0;
    background: var(--bg-white);
}

.team-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(280px, 1fr));
    gap: 2.5rem;
}

.team-member {
    background: var(--bg-white);
    border-radius: 25px;
    overflow: hidden;
    box-shadow: var(--shadow);
    transition: var(--transition);
    text-align: center;
    border: 2px solid rgba(0, 78, 137, 0.1);
}

.team-member:hover {
    transform: translateY(-12px);
    box-shadow: var(--shadow-hover);
    border-color: rgba(0, 78, 137, 0.3);
}

.team-member-image {
    width: 100%;
    height: 320px;
    overflow: hidden;
    background: var(--gradient-primary);
}

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

.team-member:hover .team-member-image img {
    transform: scale(1.1);
}

.team-member-content {
    padding: 2.5rem;
}

.team-member-name {
    font-size: 1.625rem;
    font-weight: 700;
    color: var(--primary-color);
    margin-bottom: 0.75rem;
}

.team-member-role {
    color: var(--secondary-color);
    font-weight: 600;
    margin-bottom: 1.25rem;
    font-size: 1.125rem;
}

.team-member-description {
    color: var(--text-secondary);
    line-height: 1.8;
}

.culture-section {
    padding: 7rem 0;
    background: var(--bg-light);
}

.culture-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(250px, 1fr));
    gap: 2.5rem;
}

.culture-item {
    background: var(--bg-white);
    padding: 3.5rem 2.5rem;
    border-radius: 25px;
    text-align: center;
    box-shadow: var(--shadow);
    transition: var(--transition);
    border: 2px solid rgba(0, 78, 137, 0.1);
}

.culture-item:hover {
    transform: translateY(-12px);
    box-shadow: var(--shadow-hover);
    border-color: rgba(0, 78, 137, 0.3);
}

.culture-icon {
    font-size: 4rem;
    margin-bottom: 2rem;
}

.culture-title {
    font-size: 1.625rem;
    font-weight: 700;
    color: var(--primary-color);
    margin-bottom: 1.25rem;
}

.culture-description {
    color: var(--text-secondary);
    line-height: 1.8;
}

/* ===== 联系我们页样式 ===== */
.contact-section {
    padding: 5rem 0;
    background: var(--bg-light);
}

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

.contact-form-wrapper,
.contact-info-wrapper {
    background: var(--bg-white);
    padding: 3.5rem;
    border-radius: 25px;
    box-shadow: var(--shadow);
    border: 2px solid rgba(0, 78, 137, 0.1);
}

.form-header,
.contact-info-header {
    margin-bottom: 2.5rem;
}

.form-description,
.contact-info-description {
    color: var(--text-secondary);
    margin-top: 1rem;
    line-height: 1.8;
}

.form-group {
    margin-bottom: 1.75rem;
}

.form-label {
    display: block;
    margin-bottom: 0.75rem;
    font-weight: 600;
    color: var(--text-primary);
}

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

.form-input,
.form-textarea {
    width: 100%;
    padding: 14px 18px;
    border: 2px solid var(--border-color);
    border-radius: 12px;
    font-size: 1rem;
    font-family: inherit;
    transition: var(--transition);
    background: var(--bg-white);
}

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

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

.contact-info-cards {
    display: grid;
    gap: 1.75rem;
    margin-bottom: 2.5rem;
}

.contact-info-card {
    padding: 2.5rem;
    background: var(--bg-light);
    border-radius: 20px;
    text-align: center;
    transition: var(--transition);
    border: 2px solid rgba(0, 78, 137, 0.1);
}

.contact-info-card:hover {
    transform: translateY(-8px);
    box-shadow: var(--shadow);
    border-color: rgba(0, 78, 137, 0.3);
}

.contact-info-icon {
    font-size: 3rem;
    margin-bottom: 1.25rem;
}

.contact-info-title {
    font-size: 1.375rem;
    font-weight: 700;
    color: var(--primary-color);
    margin-bottom: 1.25rem;
}

.contact-info-text {
    color: var(--text-secondary);
    margin-bottom: 0.5rem;
    line-height: 1.8;
}

.contact-map {
    margin-top: 2.5rem;
}

.map-placeholder {
    position: relative;
    width: 100%;
    height: 320px;
    border-radius: 20px;
    overflow: hidden;
    border: 2px solid rgba(0, 78, 137, 0.1);
}

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

.map-overlay {
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    background: rgba(255, 107, 53, 0.85);
    color: var(--text-light);
    display: flex;
    flex-direction: column;
    align-items: center;
    justify-content: center;
    text-align: center;
    padding: 2.5rem;
}

.map-overlay p {
    font-size: 1.25rem;
    margin-bottom: 0.75rem;
    font-weight: 600;
}

/* ===== 动画效果 ===== */
@keyframes fadeInUp {
    from {
        opacity: 0;
        transform: translateY(40px);
    }
    to {
        opacity: 1;
        transform: translateY(0);
    }
}

@keyframes fadeInRight {
    from {
        opacity: 0;
        transform: translateX(40px);
    }
    to {
        opacity: 1;
        transform: translateX(0);
    }
}

.fade-in {
    opacity: 0;
    transform: translateY(40px);
    transition: opacity 0.8s ease, transform 0.8s ease;
}

.fade-in.visible {
    opacity: 1;
    transform: translateY(0);
}

/* ===== 响应式设计 ===== */
@media (max-width: 968px) {
    .hero-content,
    .intro-content,
    .about-intro-content,
    .contact-content {
        grid-template-columns: 1fr;
    }

    .hero-image {
        order: -1;
    }

    .history-timeline::before {
        left: 65px;
    }

    .timeline-item {
        flex-direction: row !important;
    }

    .timeline-year {
        width: 90px;
        height: 90px;
        font-size: 1.375rem;
    }

    .timeline-content {
        margin-left: 1.5rem;
        margin-right: 0;
    }

    .hero-title {
        font-size: 2.75rem;
    }

    .section-title {
        font-size: 2.25rem;
    }
}

@media (max-width: 768px) {
    .nav-menu {
        position: fixed;
        top: 70px;
        left: -100%;
        width: 100%;
        height: calc(100vh - 70px);
        background: var(--bg-white);
        flex-direction: column;
        padding: 3rem;
        box-shadow: var(--shadow);
        transition: var(--transition);
    }

    .nav-menu.active {
        left: 0;
    }

    .menu-toggle {
        display: flex;
    }

    .menu-toggle.active span:nth-child(1) {
        transform: rotate(45deg) translate(9px, 9px);
    }

    .menu-toggle.active span:nth-child(2) {
        opacity: 0;
    }

    .menu-toggle.active span:nth-child(3) {
        transform: rotate(-45deg) translate(8px, -8px);
    }

    .hero-title {
        font-size: 2.25rem;
    }

    .hero-subtitle {
        font-size: 1.5rem;
    }

    .page-title {
        font-size: 2.5rem;
    }

    .section-title {
        font-size: 2rem;
    }

    .products-grid,
    .news-grid,
    .products-list-grid,
    .team-grid,
    .culture-grid {
        grid-template-columns: 1fr;
    }

    .stats-grid {
        grid-template-columns: repeat(2, 1fr);
    }

    .filter-tabs {
        justify-content: flex-start;
        overflow-x: auto;
        padding-bottom: 15px;
    }

    .filter-btn {
        white-space: nowrap;
    }
}

@media (max-width: 480px) {
    .hero-actions {
        flex-direction: column;
    }

    .btn {
        width: 100%;
        text-align: center;
    }

    .stats-grid {
        grid-template-columns: 1fr;
    }

    .stat-number {
        font-size: 3rem;
    }

    .contact-form-wrapper,
    .contact-info-wrapper {
        padding: 2rem 1.5rem;
    }

    .hero-title {
        font-size: 1.875rem;
    }

    .page-title {
        font-size: 2rem;
    }
}