/* ===================================
   深圳德技创新实业有限公司 - 现代企业官网样式
   Modern Corporate Website Styles
   =================================== */

/* ==================== CSS变量 ==================== */
:root {
    /* 主色调 */
    --primary: #2563eb;
    --primary-dark: #1d4ed8;
    --primary-light: #3b82f6;
    
    /* 强调色 */
    --accent: #f97316;
    --accent-dark: #ea580c;
    
    /* 中性色 */
    --dark: #1e293b;
    --gray-900: #0f172a;
    --gray-800: #1e293b;
    --gray-700: #334155;
    --gray-600: #475569;
    --gray-500: #64748b;
    --gray-400: #94a3b8;
    --gray-300: #cbd5e1;
    --gray-200: #e2e8f0;
    --gray-100: #f1f5f9;
    --gray-50: #f8fafc;
    --white: #ffffff;
    
    /* 背景色 */
    --bg-primary: #ffffff;
    --bg-secondary: #f8fafc;
    --bg-dark: #0f172a;
    
    /* 阴影 */
    --shadow-sm: 0 1px 2px 0 rgb(0 0 0 / 0.05);
    --shadow: 0 1px 3px 0 rgb(0 0 0 / 0.1), 0 1px 2px -1px rgb(0 0 0 / 0.1);
    --shadow-md: 0 4px 6px -1px rgb(0 0 0 / 0.1), 0 2px 4px -2px rgb(0 0 0 / 0.1);
    --shadow-lg: 0 10px 15px -3px rgb(0 0 0 / 0.1), 0 4px 6px -4px rgb(0 0 0 / 0.1);
    --shadow-xl: 0 20px 25px -5px rgb(0 0 0 / 0.1), 0 8px 10px -6px rgb(0 0 0 / 0.1);
    
    /* 圆角 */
    --radius-sm: 0.25rem;
    --radius: 0.5rem;
    --radius-md: 0.75rem;
    --radius-lg: 1rem;
    --radius-xl: 1.5rem;
    --radius-full: 9999px;
    
    /* 过渡 */
    --transition-fast: 150ms;
    --transition: 300ms;
    --transition-slow: 500ms;
    
    /* 容器宽度 */
    --container-max: 1600px;
    --container-padding: 1rem;
}

/* ==================== 基础重置 ==================== */
*, *::before, *::after {
    margin: 0;
    padding: 0;
    box-sizing: border-box;
}

html {
    scroll-behavior: smooth;
    font-size: 16px;
}

body {
    font-family: 'Inter', 'PingFang SC', 'Microsoft YaHei', sans-serif;
    line-height: 1.6;
    color: var(--gray-700);
    background-color: var(--bg-primary);
    -webkit-font-smoothing: antialiased;
    -moz-osx-font-smoothing: grayscale;
}

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

/* ==================== Banner 横幅 ==================== */
.top-banner {
    position: relative;
    width: 100%;
    max-height: 500px;
    overflow: hidden;
    margin-top: 70px; /* 留出导航栏高度 */
}

.banner-img {
    width: 100%;
    height: auto;
    display: block;
    object-fit: cover;
}

.banner-overlay {
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background: linear-gradient(to bottom, rgba(0,0,0,0.3) 0%, transparent 50%, rgba(37,99,235,0.1) 100%);
    pointer-events: none;
}

@media (max-width: 868px) {
    .top-banner {
        max-height: 250px;
        margin-top: 60px;
    }
}

@media (max-width: 480px) {
    .top-banner {
        max-height: 180px;
    }
}

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

ul, ol {
    list-style: none;
}

button {
    border: none;
    background: none;
    cursor: pointer;
    font-family: inherit;
}

input, textarea, select {
    font-family: inherit;
    font-size: inherit;
}

/* ==================== 容器系统 ==================== */
.container {
    width: 100%;
    max-width: var(--container-max);
    margin: 0 auto;
    padding: 0 var(--container-padding);
}

.container-sm {
    max-width: 1060px;
}

.container-lg {
    max-width: 1440px;
}

/* ==================== 排版系统 ==================== */
h1, h2, h3, h4, h5, h6 {
    color: var(--dark);
    font-weight: 900;
    line-height: 1.2;
}

h1 { font-size: clamp(2rem, 5vw, 3.5rem); }
h2 { font-size: clamp(1.75rem, 4vw, 2.5rem); }
h3 { font-size: clamp(1.25rem, 3vw, 1.75rem); }
h4 { font-size: 1.25rem; }
h5 { font-size: 1.125rem; }
h6 { font-size: 1rem; }

p {
    margin-bottom: 1rem;
}

.text-center { text-align: center; }
.text-left { text-align: left; }
.text-right { text-align: right; }

/* ==================== 按钮组件 ==================== */
.btn {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    gap: 0.5rem;
    padding: 0.875rem 2rem;
    font-size: 1rem;
    font-weight: 600;
    border-radius: var(--radius);
    transition: all var(--transition);
    cursor: pointer;
    white-space: nowrap;
}

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

.btn-primary:hover {
    background: var(--primary-dark);
    transform: translateY(-2px);
    box-shadow: var(--shadow-lg);
}

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

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

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

.btn-white:hover {
    background: var(--gray-100);
    transform: translateY(-2px);
}

.btn-lg {
    padding: 1rem 2.5rem;
    font-size: 1.125rem;
}

.btn-sm {
    padding: 0.5rem 1rem;
    font-size: 0.875rem;
}

/* ==================== 导航栏 ==================== */
.header {
    position: fixed;
    top: 0;
    left: 0;
    right: 0;
    z-index: 1000;
    background: rgba(255, 255, 255, 0.95);
    backdrop-filter: blur(10px);
    box-shadow: var(--shadow-sm);
    transition: all var(--transition);
}

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

.navbar {
    display: flex;
    align-items: center;
    height: 80px;
}

.logo {
    display: flex;
    align-items: center;
    gap: 0.75rem;
    font-size: 1.5rem;
    font-weight: 700;
    color: var(--primary);
    flex-shrink: 0;
}

.nav-links {
    display: flex;
    align-items: center;
    gap: 2rem;
    margin: 0 auto;
}

.logo-icon {
    width: 40px;
    height: 40px;
    background: linear-gradient(135deg, var(--primary), var(--primary-light));
    border-radius: var(--radius);
    display: flex;
    align-items: center;
    justify-content: center;
    color: var(--white);
    font-weight: 700;
}

.nav-links {
    display: flex;
    align-items: center;
    gap: 2rem;
}

.nav-link {
    position: relative;
    font-weight: 500;
    color: var(--gray-600);
    padding: 0.5rem 0;
    transition: color var(--transition-fast);
}

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

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

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

.nav-cta {
    margin-left: 1rem;
}

/* 移动端菜单按钮 */
.mobile-menu-btn {
    display: none;
    flex-direction: column;
    gap: 5px;
    padding: 0.5rem;
}

.mobile-menu-btn span {
    display: block;
    width: 24px;
    height: 2px;
    background: var(--gray-700);
    transition: all var(--transition);
}

/* ==================== Hero 区域 ==================== */
.hero {
    position: relative;
    min-height: 100vh;
    display: flex;
    align-items: center;
    background: linear-gradient(135deg, var(--gray-50) 0%, var(--white) 50%, var(--gray-100) 100%);
    overflow: hidden;
}

.hero::before {
    content: '';
    position: absolute;
    top: 0;
    right: 0;
    width: 60%;
    height: 100%;
    background: linear-gradient(135deg, var(--primary-light) 0%, var(--primary) 100%);
    clip-path: polygon(20% 0, 100% 0, 100% 100%, 0% 100%);
    opacity: 0.05;
}

.hero-content {
    position: relative;
    z-index: 1;
    max-width: 700px;
}

.hero-badge {
    display: inline-flex;
    align-items: center;
    gap: 0.5rem;
    padding: 0.5rem 1rem;
    background: var(--primary);
    color: var(--white);
    font-size: 0.875rem;
    font-weight: 500;
    border-radius: var(--radius-full);
    margin-bottom: 1.5rem;
}

.hero-title {
    margin-bottom: 1.5rem;
    color: var(--dark);
}

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

.hero-description {
    font-size: 1.25rem;
    color: var(--gray-600);
    margin-bottom: 2rem;
    line-height: 1.8;
}

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

.hero-stats {
    display: flex;
    gap: 3rem;
    margin-top: 4rem;
    padding-top: 2rem;
    border-top: 1px solid var(--gray-200);
}

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

.stat-number {
    font-size: 2.5rem;
    font-weight: 700;
    color: var(--primary);
    line-height: 1;
}

.stat-label {
    font-size: 0.875rem;
    color: var(--gray-500);
    margin-top: 0.5rem;
}

/* ==================== Section 通用样式 ==================== */
.section {
    padding: 6rem 0;
}

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

.section-dark h2,
.section-dark h3 {
    color: var(--white);
}

.section-gray {
    background: var(--gray-50);
}

.section-header {
    text-align: center;
    max-width: 700px;
    margin: 0 auto 4rem;
}

.section-label {
    display: inline-block;
    font-size: 0.875rem;
    font-weight: 600;
    color: var(--primary);
    text-transform: uppercase;
    letter-spacing: 0.1em;
    margin-bottom: 1rem;
}

.section-title {
    margin-bottom: 1rem;
}

.section-description {
    width: 100%;
    max-width: 100%;
    font-size: 1.125rem;
    color: var(--gray-500);
}

#factory .section-description {
    max-width: 100%;
    margin: 0 auto;
    text-align: center;
}

/* ==================== 卡片组件 ==================== */
.card {
    background: var(--white);
    border-radius: var(--radius-lg);
    box-shadow: var(--shadow);
    overflow: hidden;
    transition: all var(--transition);
}

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

.card-image {
    position: relative;
    overflow: hidden;
}

.card-image img {
    width: 100%;
    height: 200px;
    object-fit: cover;
    transition: transform var(--transition);
}

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

.card-body {
    padding: 1.5rem;
}

.card-title {
    font-size: 1.25rem;
    margin-bottom: 0.75rem;
}

.card-text {
    color: var(--gray-500);
    font-size: 0.9375rem;
}

/* ==================== 关于我们 ==================== */
.about-grid {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 4rem;
    align-items: center;
}

.about-image {
    position: relative;
}

.about-image img {
    border-radius: var(--radius-lg);
    box-shadow: var(--shadow-xl);
}

.about-image::before {
    content: '';
    position: absolute;
    top: -20px;
    left: -20px;
    width: 100%;
    height: 100%;
    border: 3px solid var(--primary);
    border-radius: var(--radius-lg);
    z-index: -1;
}

.about-content h2 {
    margin-bottom: 1.5rem;
}

.about-content p {
    color: var(--gray-600);
    margin-bottom: 1.5rem;
}

.about-features {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 1rem;
    margin-top: 2rem;
}

.feature-item {
    display: flex;
    align-items: center;
    gap: 0.75rem;
}

.feature-icon {
    width: 24px;
    height: 24px;
    background: var(--primary);
    color: var(--white);
    border-radius: var(--radius-full);
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 0.75rem;
}

/* ==================== 数字展示 ==================== */
.stats-grid {
    display: grid;
    grid-template-columns: repeat(4, 1fr);
    gap: 2rem;
}

.stats-card {
    text-align: center;
    padding: 2rem;
    background: rgba(255, 255, 255, 0.1);
    border-radius: var(--radius-lg);
    border: 1px solid rgba(255, 255, 255, 0.1);
    transition: all var(--transition);
}

.stats-card:hover {
    background: rgba(255, 255, 255, 0.15);
    transform: translateY(-5px);
}

.stats-icon {
    width: 60px;
    height: 60px;
    background: rgba(255, 255, 255, 0.2);
    border-radius: var(--radius-lg);
    display: flex;
    align-items: center;
    justify-content: center;
    margin: 0 auto 1.5rem;
    font-size: 1.5rem;
}

.stats-number {
    font-size: 3rem;
    font-weight: 700;
    color: var(--white);
    line-height: 1;
}

.stats-label {
    color: var(--gray-400);
    margin-top: 0.5rem;
}

/* ==================== 研发团队 ==================== */
.team-grid {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: 2rem;
}

.team-card {
    text-align: center;
    padding: 2rem;
    background: var(--white);
    border-radius: var(--radius-lg);
    box-shadow: var(--shadow);
    transition: all var(--transition);
}

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

.team-image {
    width: 150px;
    height: 150px;
    border-radius: var(--radius-full);
    overflow: hidden;
    margin: 0 auto 1.5rem;
    border: 4px solid var(--primary-light);
}

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

.team-name {
    font-size: 1.25rem;
    margin-bottom: 0.5rem;
}

.team-role {
    color: var(--primary);
    font-weight: 500;
    margin-bottom: 1rem;
}

.team-description {
    color: var(--gray-500);
    font-size: 0.875rem;
}

.team-grid-full {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: 1.5rem;
}

.team-card-full {
    display: flex;
    flex-direction: column;
    background: white;
    border-radius: var(--radius-lg);
    overflow: hidden;
    box-shadow: var(--shadow);
    transition: all var(--transition);
}

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

.team-card-full .team-image {
    width: 100%;
    height: 220px;
    overflow: hidden;
}

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

.team-card-full:hover .team-image img {
    transform: scale(1.05);
}

.team-card-full .team-info {
    padding: 1.25rem 1rem;
    text-align: center;
    min-width: 0;
    word-break: break-word;
}

.team-card-full .team-name {
    font-size: 1rem;
    color: var(--gray-700);
    font-weight: 600;
    margin-bottom: 0;
}

.team-card-full .team-role,
.team-card-full .team-description {
    display: none;
}

@media (max-width: 1024px) {
    .team-grid-full {
        grid-template-columns: repeat(2, 1fr);
    }
}

@media (max-width: 768px) {
    .team-grid-full {
        grid-template-columns: 1fr;
    }
}

/* ==================== 专利展示 ==================== */
.patent-gallery {
    display: grid;
    grid-template-columns: repeat(6, 1fr);
    gap: 1rem;
}

.patent-item {
    border-radius: var(--radius);
    overflow: hidden;
    box-shadow: var(--shadow);
    transition: all var(--transition);
}

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

.patent-item img {
    width: 100%;
    height: 150px;
    object-fit: cover;
}
.patent-grid {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: 2rem;
}

.patent-card {
    background: var(--white);
    padding: 2rem;
    border-radius: var(--radius-lg);
    box-shadow: var(--shadow);
    text-align: center;
    transition: all var(--transition);
    border: 2px solid transparent;
}

.patent-card:hover {
    border-color: var(--primary);
    transform: translateY(-5px);
}

.patent-icon {
    width: 80px;
    height: 80px;
    background: linear-gradient(135deg, var(--primary), var(--primary-light));
    border-radius: var(--radius-lg);
    display: flex;
    align-items: center;
    justify-content: center;
    margin: 0 auto 1.5rem;
    font-size: 2rem;
}

.patent-number {
    font-size: 2rem;
    font-weight: 700;
    color: var(--primary);
    margin-bottom: 0.5rem;
}

/* ==================== 工厂展示 ==================== */
.factory-grid {
    display: grid;
    grid-template-columns: repeat(2, 1fr);
    gap: 2rem;
}

.factory-card {
    position: relative;
    border-radius: var(--radius-lg);
    overflow: hidden;
    box-shadow: var(--shadow-lg);
}

.factory-card img {
    width: 100%;
    height: 300px;
    object-fit: cover;
    transition: transform var(--transition);
}

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

.factory-overlay {
    position: absolute;
    bottom: 0;
    left: 0;
    right: 0;
    padding: 2rem;
    background: linear-gradient(transparent, rgba(0, 0, 0, 0.8));
    color: var(--white);
}

.factory-name {
    font-size: 1.5rem;
    font-weight: 700;
    margin-bottom: 0.5rem;
}

/* ==================== 合作伙伴 ==================== */
.partner-grid {
    display: grid;
    grid-template-columns: repeat(6, 1fr);
    gap: 1.5rem;
}

.partner-item {
    background: var(--white);
    padding: 1.5rem;
    border-radius: var(--radius);
    display: flex;
    align-items: center;
    justify-content: center;
    min-height: 100px;
    box-shadow: var(--shadow-sm);
    transition: all var(--transition);
}

.partner-item:hover {
    box-shadow: var(--shadow);
    transform: translateY(-3px);
}

.partner-item img {
    max-width: 100%;
    max-height: 100%;
    object-fit: contain;
    transition: all var(--transition);
}

.partner-item:hover img {
    opacity: 0.8;
}

/* ==================== 设备分布 ==================== */
.distribution-grid {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 2rem;
}

.distribution-card {
    background: var(--white);
    border-radius: var(--radius-lg);
    overflow: hidden;
    box-shadow: var(--shadow);
}

.distribution-card img {
    width: 100%;
    height: 250px;
    object-fit: cover;
}

.distribution-content {
    padding: 1.5rem;
}

.distribution-title {
    font-size: 1.25rem;
    margin-bottom: 0.5rem;
}

/* ==================== 联系信息 ==================== */
.contact-grid {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: 2rem;
}

.contact-card {
    background: var(--white);
    padding: 2rem;
    border-radius: var(--radius-lg);
    text-align: center;
    box-shadow: var(--shadow);
    transition: all var(--transition);
}

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

.contact-icon {
    width: 60px;
    height: 60px;
    background: var(--primary);
    color: var(--white);
    border-radius: var(--radius-full);
    display: flex;
    align-items: center;
    justify-content: center;
    margin: 0 auto 1rem;
    font-size: 1.5rem;
}

.contact-title {
    font-size: 1.125rem;
    margin-bottom: 0.5rem;
}

.contact-info {
    color: var(--gray-500);
}

.contact-info a {
    color: var(--primary);
    font-weight: 500;
}

/* ==================== 页脚 ==================== */
.footer {
    background: var(--gray-900);
    color: var(--gray-400);
    padding: 4rem 0 2rem;
}

.footer-grid {
    display: grid;
    grid-template-columns: 1fr 1fr 1fr;
    gap: 3rem;
    margin-bottom: 3rem;
    align-items: start;
}

.footer-brand {
    max-width: 350px;
}

.footer-logo {
    display: flex;
    align-items: center;
    gap: 0.75rem;
    font-size: 1.5rem;
    font-weight: 700;
    color: var(--white);
    margin-bottom: 1rem;
}

.footer-logo-img {
    height: 40px;
    width: auto;
}

.footer-description {
    line-height: 1.8;
    font-size: 0.9rem;
}

.footer-contact {
    display: flex;
    align-items: center;
    gap: 2rem;
}

.footer-qr img {
    width: 120px;
    height: 120px;
    border-radius: var(--radius);
    border: 2px solid var(--gray-700);
}

.footer-phone {
    display: flex;
    flex-direction: column;
    gap: 1rem;
}

.phone-item {
    display: flex;
    align-items: center;
    gap: 0.75rem;
}

.phone-item i {
    font-size: 1.25rem;
    color: var(--primary);
    width: 24px;
}

.phone-item div {
    display: flex;
    flex-direction: column;
}

.phone-label {
    font-size: 0.75rem;
    color: var(--gray-500);
}

.phone-num {
    font-size: 1rem;
    color: var(--white);
    font-weight: 600;
}

.footer-nav {
    display: flex;
    gap: 3rem;
}

.footer-title {
    font-size: 1.125rem;
    color: var(--white);
    margin-bottom: 1.5rem;
}

.footer-links li {
    margin-bottom: 0.75rem;
}

.footer-links a {
    color: var(--gray-400);
    transition: color var(--transition-fast);
}

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

.footer-social {
    display: flex;
    gap: 1rem;
    margin-top: 1.5rem;
}

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

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

.footer-bottom {
    border-top: 1px solid var(--gray-800);
    padding-top: 2rem;
    display: flex;
    justify-content: space-between;
    align-items: center;
    flex-wrap: wrap;
    gap: 1rem;
}

.footer-copyright a {
    color: var(--gray-400);
}

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

/* ==================== 悬浮客服 ==================== */
.floating-contact {
    position: fixed;
    bottom: 2rem;
    right: 2rem;
    z-index: 999;
}

.floating-buttons {
    display: flex;
    flex-direction: column;
    gap: 1rem;
}

.floating-btn {
    width: 56px;
    height: 56px;
    border-radius: var(--radius-full);
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 1.5rem;
    color: var(--white);
    box-shadow: var(--shadow-lg);
    transition: all var(--transition);
    cursor: pointer;
}

.floating-btn:hover {
    transform: scale(1.1);
}

.floating-btn.phone {
    background: var(--accent);
}

.floating-btn.message {
    background: var(--primary);
}

/* ==================== 返回顶部 ==================== */
.back-to-top {
    position: fixed;
    bottom: 2rem;
    right: 7rem;
    width: 48px;
    height: 48px;
    background: var(--gray-700);
    color: var(--white);
    border-radius: var(--radius-full);
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 1.25rem;
    cursor: pointer;
    opacity: 0;
    visibility: hidden;
    transition: all var(--transition);
    z-index: 998;
}

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

.back-to-top:hover {
    background: var(--primary);
    transform: translateY(-3px);
}

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

@keyframes fadeInLeft {
    from {
        opacity: 0;
        transform: translateX(-30px);
    }
    to {
        opacity: 1;
        transform: translateX(0);
    }
}

@keyframes fadeInRight {
    from {
        opacity: 0;
        transform: translateX(30px);
    }
    to {
        opacity: 1;
        transform: translateX(0);
    }
}

@keyframes scaleIn {
    from {
        opacity: 0;
        transform: scale(0.9);
    }
    to {
        opacity: 1;
        transform: scale(1);
    }
}

@keyframes float {
    0%, 100% {
        transform: translateY(0);
    }
    50% {
        transform: translateY(-20px);
    }
}

@keyframes pulse {
    0%, 100% {
        opacity: 1;
    }
    50% {
        opacity: 0.5;
    }
}

.animate-fadeInUp {
    animation: fadeInUp 0.6s ease-out forwards;
}

.animate-fadeInLeft {
    animation: fadeInLeft 0.6s ease-out forwards;
}

.animate-fadeInRight {
    animation: fadeInRight 0.6s ease-out forwards;
}

.animate-scaleIn {
    animation: scaleIn 0.6s ease-out forwards;
}

.animate-float {
    animation: float 3s ease-in-out infinite;
}

/* 滚动动画 */
.reveal {
    opacity: 0;
    transition: opacity 0.6s ease-out, transform 0.6s ease-out;
    transform: translateY(20px);
    will-change: opacity, transform;
}

.reveal.visible {
    opacity: 1;
    transform: translateY(0);
}

.reveal-left {
    opacity: 0;
    transition: opacity 0.6s ease-out, transform 0.6s ease-out;
    transform: translateX(-30px);
    will-change: opacity, transform;
}

.reveal-left.visible {
    opacity: 1;
    transform: translateX(0);
}

.reveal-right {
    opacity: 0;
    transition: opacity 0.6s ease-out, transform 0.6s ease-out;
    transform: translateX(30px);
    will-change: opacity, transform;
}

.reveal-right.visible {
    opacity: 1;
    transform: translateX(0);
}

/* ==================== 产品页样式 ==================== */
.products-hero {
    padding-top: 120px;
    padding-bottom: 60px;
    background: linear-gradient(135deg, var(--primary) 0%, var(--primary-dark) 100%);
    color: var(--white);
    text-align: center;
}

.products-hero h1 {
    color: var(--white);
    margin-bottom: 1rem;
}

.products-hero p {
    opacity: 0.9;
    font-size: 1.25rem;
}

.product-showcase {
    padding: 4rem 0;
}

.product-card {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 4rem;
    align-items: center;
    padding: 4rem 0;
    border-bottom: 1px solid var(--gray-200);
}

.product-card:last-child {
    border-bottom: none;
}

.product-card:nth-child(even) {
    direction: rtl;
}

.product-card:nth-child(even) > * {
    direction: ltr;
}

.product-image {
    border-radius: var(--radius-lg);
    overflow: hidden;
    box-shadow: var(--shadow-xl);
}

.product-image img {
    width: 100%;
    height: 400px;
    object-fit: cover;
}

.product-content h2 {
    margin-bottom: 1rem;
    color: var(--primary);
}

.product-content > p {
    color: var(--gray-600);
    font-size: 1.125rem;
    margin-bottom: 2rem;
}

.product-features {
    display: grid;
    gap: 1rem;
    margin-bottom: 2rem;
}

.product-feature {
    display: flex;
    align-items: flex-start;
    gap: 1rem;
}

.product-feature-icon {
    width: 24px;
    height: 24px;
    background: var(--accent);
    color: var(--white);
    border-radius: var(--radius-full);
    display: flex;
    align-items: center;
    justify-content: center;
    flex-shrink: 0;
}

.cert-badges {
    display: flex;
    flex-wrap: wrap;
    gap: 0.75rem;
}

.cert-badge {
    display: inline-block;
    padding: 0.5rem 1rem;
    background: var(--gray-100);
    color: var(--gray-700);
    font-size: 0.875rem;
    font-weight: 500;
    border-radius: var(--radius);
}

/* ==================== 技术支持页样式 ==================== */
.support-hero {
    padding-top: 120px;
    padding-bottom: 60px;
    background: linear-gradient(135deg, var(--accent) 0%, var(--accent-dark) 100%);
    color: var(--white);
    text-align: center;
}

.support-hero h1 {
    color: var(--white);
    margin-bottom: 1rem;
}

.support-hero p {
    opacity: 0.9;
    font-size: 1.25rem;
}

.support-section {
    padding: 4rem 0;
}

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

.support-card {
    background: var(--white);
    padding: 2rem;
    border-radius: var(--radius-lg);
    box-shadow: var(--shadow);
    text-align: center;
    transition: all var(--transition);
}

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

.support-card-icon {
    width: 80px;
    height: 80px;
    background: linear-gradient(135deg, var(--primary), var(--primary-light));
    color: var(--white);
    border-radius: var(--radius-lg);
    display: flex;
    align-items: center;
    justify-content: center;
    margin: 0 auto 1.5rem;
    font-size: 2rem;
}

.support-card h3 {
    margin-bottom: 1rem;
}

.support-card p {
    color: var(--gray-500);
    margin-bottom: 1.5rem;
}

.tech-showcase {
    padding: 4rem 0;
}

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

.tech-card {
    background: var(--white);
    border-radius: var(--radius-lg);
    overflow: hidden;
    box-shadow: var(--shadow);
    transition: all var(--transition);
}

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

.tech-card-image {
    height: 200px;
    background: linear-gradient(135deg, var(--gray-100), var(--gray-200));
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 4rem;
    color: var(--gray-300);
}

.tech-card-content {
    padding: 1.5rem;
}

.tech-card h3 {
    margin-bottom: 0.75rem;
}

.tech-card p {
    color: var(--gray-500);
    font-size: 0.9375rem;
}

/* ==================== 表单样式 ==================== */
.form-group {
    margin-bottom: 1.5rem;
}

.form-label {
    display: block;
    font-weight: 500;
    margin-bottom: 0.5rem;
    color: var(--gray-700);
}

.form-input {
    width: 100%;
    padding: 0.875rem 1rem;
    border: 2px solid var(--gray-200);
    border-radius: var(--radius);
    font-size: 1rem;
    transition: all var(--transition-fast);
}

.form-input:focus {
    outline: none;
    border-color: var(--primary);
    box-shadow: 0 0 0 3px rgba(37, 99, 235, 0.1);
}

.form-input::placeholder {
    color: var(--gray-400);
}

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

/* ==================== 响应式设计 ==================== */

/* 平板 */
@media (max-width: 1024px) {
    :root {
        --container-padding: 1.5rem;
    }
    
    .nav-links {
        display: none;
    }
    
    .mobile-menu-btn {
        display: flex;
    }
    
    .about-grid {
        grid-template-columns: 1fr;
        gap: 3rem;
    }
    
    .about-image {
        order: -1;
    }
    
    .stats-grid {
        grid-template-columns: repeat(2, 1fr);
    }
    
    .team-grid {
        grid-template-columns: repeat(2, 1fr);
    }
    
    .patent-grid {
        grid-template-columns: repeat(2, 1fr);
    }
    
    .partner-grid {
        grid-template-columns: repeat(4, 1fr);
    }
    
    .footer-grid {
        grid-template-columns: 1fr;
        text-align: center;
    }

    .footer-brand {
        max-width: none;
    }

    .footer-logo {
        justify-content: center;
    }

    .footer-contact {
        flex-direction: column;
        align-items: center;
    }

    .footer-nav {
        justify-content: center;
        gap: 2rem;
    }
    
    .product-card {
        grid-template-columns: 1fr;
        gap: 2rem;
    }
    
    .product-card:nth-child(even) {
        direction: ltr;
    }
    
    .support-cards {
        grid-template-columns: repeat(2, 1fr);
    }
    
    .tech-grid {
        grid-template-columns: repeat(2, 1fr);
    }
}

/* 平板竖屏 */
@media (max-width: 768px) {
    :root {
        --container-padding: 1rem;
    }
    
    .section {
        padding: 4rem 0;
    }
    
    .hero {
        min-height: auto;
        padding: 120px 0 60px;
    }
    
    .hero-stats {
        flex-direction: column;
        gap: 1.5rem;
    }
    
    .stat-item {
        display: flex;
        align-items: center;
        gap: 1rem;
    }
    
    .stats-grid {
        grid-template-columns: 1fr;
        gap: 1rem;
    }
    
    .stats-card {
        display: flex;
        align-items: center;
        gap: 1rem;
        text-align: left;
        padding: 1.5rem;
    }
    
    .stats-icon {
        margin: 0;
    }
    
    .contact-grid {
        grid-template-columns: 1fr;
    }
    
    .factory-grid {
        grid-template-columns: 1fr;
    }
    
    .distribution-grid {
        grid-template-columns: 1fr;
    }
    
    .partner-grid {
        grid-template-columns: repeat(3, 1fr);
    }
    
    .footer-grid {
        grid-template-columns: 1fr;
        gap: 2rem;
    }

    .footer-nav {
        flex-direction: column;
        gap: 1.5rem;
    }

    .footer-bottom {
        flex-direction: column;
        text-align: center;
    }
    
    .support-cards {
        grid-template-columns: 1fr;
    }
    
    .tech-grid {
        grid-template-columns: 1fr;
    }
    
    .floating-contact {
        bottom: 1rem;
        right: 1rem;
    }
    
    .back-to-top {
        right: 5rem;
        bottom: 1rem;
    }
}

/* 手机 */
@media (max-width: 480px) {
    h1 { font-size: 1.75rem; }
    h2 { font-size: 1.5rem; }
    h3 { font-size: 1.25rem; }
    
    .hero-description {
        font-size: 1rem;
    }
    
    .hero-buttons {
        flex-direction: column;
    }
    
    .hero-buttons .btn {
        width: 100%;
    }
    
    .team-grid {
        grid-template-columns: 1fr;
    }
    
    .patent-grid {
        grid-template-columns: 1fr;
    }
    
    .partner-grid {
        grid-template-columns: repeat(2, 1fr);
    }
    
    .about-features {
        grid-template-columns: 1fr;
    }
    
    .product-image img {
        height: 250px;
    }
    
    .floating-btn {
        width: 48px;
        height: 48px;
    }
    
    .team-card-full {
        grid-template-columns: 1fr;
    }
    
    .about-split {
        grid-template-columns: 1fr;
    }
    
    .patent-gallery {
        grid-template-columns: repeat(2, 1fr);
    }
    
    .distribution-split {
        grid-template-columns: 1fr;
    }
    
    .form-grid {
        grid-template-columns: 1fr;
    }
}

/* ==================== 打印样式 ==================== */
@media print {
    .header,
    .floating-contact,
    .back-to-top {
        display: none !important;
    }
    
    .section {
        padding: 2rem 0;
    }
    
    .card,
    .team-card,
    .stats-card {
        box-shadow: none;
        border: 1px solid var(--gray-300);
    }
}

/* ==================== 缺失的样式补充 ==================== */

/* 品牌介绍区域 */
.brand-intro {
    max-width: 900px;
    margin: 0 auto 3rem;
    text-align: center;
}

.brand-intro .section-label {
    display: block;
    margin-bottom: 0.75rem;
}

.brand-intro h2 {
    font-size: 2rem;
    color: var(--gray-900);
    margin-bottom: 1.5rem;
}

.brand-intro-text {
    color: var(--gray-600);
    line-height: 1.9;
    font-size: 1rem;
    max-width: 100%;
    margin: 0 auto;
}

/* 使命 & 愿景卡片 */
.vision-cards {
    display: grid;
    grid-template-columns: repeat(2, 1fr);
    gap: 2rem;
}

.vision-card {
    position: relative;
    border-radius: var(--radius-lg);
    overflow: hidden;
    height: 280px;
}

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

.vision-card:hover img {
    transform: scale(1.05);
}

.vision-overlay {
    position: absolute;
    bottom: 0;
    left: 0;
    right: 0;
    padding: 2rem;
    background: linear-gradient(to top, rgba(0,0,0,0.75) 0%, rgba(0,0,0,0.3) 60%, transparent 100%);
    color: white;
}

.vision-tag {
    font-size: 0.75rem;
    font-weight: 600;
    letter-spacing: 2px;
    text-transform: uppercase;
    color: rgba(255,255,255,0.7);
    margin-bottom: 0.5rem;
}

.vision-title {
    font-size: 1.5rem;
    font-weight: 700;
    color: white;
    margin: 0;
}

/* 合作伙伴 */
.partners-grid {
    display: grid;
    grid-template-columns: repeat(4, 1fr);
    gap: 2rem;
}

.partner-card {
    background: white;
    padding: 2rem;
    border-radius: var(--radius-lg);
    display: flex;
    align-items: center;
    justify-content: center;
    box-shadow: var(--shadow-sm);
    transition: all var(--transition);
}

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

.partner-logo {
    max-width: 120px;
    max-height: 60px;
    object-fit: contain;
}

/* 设备分布 */
.distribution-split {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 4rem;
    align-items: center;
}

.distribution-left {
    position: relative;
}

.distribution-right {
    position: relative;
}

.distribution-item {
    background: white;
    padding: 1.5rem;
    border-radius: var(--radius);
    box-shadow: var(--shadow-sm);
}

.distribution-item h4 {
    color: var(--primary);
    margin-bottom: 0.5rem;
}

.distribution-item p {
    color: var(--gray-600);
    font-size: 0.875rem;
}

/* 地图样式 */
.map-img {
    width: 100%;
    border-radius: var(--radius-lg);
}

.map-label {
    position: absolute;
    background: var(--primary);
    color: white;
    padding: 0.25rem 0.75rem;
    border-radius: var(--radius);
    font-size: 0.875rem;
    white-space: nowrap;
}

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

.map-text {
    color: var(--gray-600);
    font-size: 0.875rem;
}

/* 产品链接区域 */
.product-link-content {
    text-align: center;
    padding: 3rem 0;
}

.product-link-content h2 {
    font-size: 2.5rem;
    color: white;
    margin-bottom: 1rem;
}

.product-link-content p {
    color: rgba(255,255,255,0.8);
    font-size: 1.125rem;
    margin-bottom: 2rem;
}

/* 联系我们区域 */
.contact-grid {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: 2rem;
    margin-top: 3rem;
}

.contact-card {
    background: white;
    padding: 2rem;
    border-radius: var(--radius-lg);
    text-align: center;
    box-shadow: var(--shadow);
    transition: all var(--transition);
}

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

.contact-icon {
    width: 70px;
    height: 70px;
    background: linear-gradient(135deg, var(--primary), var(--primary-light));
    color: white;
    border-radius: var(--radius-full);
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 1.75rem;
    margin: 0 auto 1.5rem;
}

.contact-card h3 {
    color: var(--gray-900);
    margin-bottom: 0.5rem;
}

.contact-card p {
    color: var(--gray-600);
}

.contact-card a {
    color: var(--primary);
    text-decoration: none;
    font-weight: 500;
}

.contact-card a:hover {
    text-decoration: underline;
}

/* FAQ样式 */
.faq-item {
    background: white;
    border-radius: var(--radius);
    margin-bottom: 1rem;
    box-shadow: var(--shadow-sm);
    overflow: hidden;
}

.faq-question {
    width: 100%;
    padding: 1.25rem 1.5rem;
    display: flex;
    justify-content: space-between;
    align-items: center;
    font-size: 1rem;
    font-weight: 600;
    color: var(--gray-700);
    text-align: left;
    cursor: pointer;
    transition: all var(--transition);
    border: none;
    background: white;
}

.faq-question:hover {
    color: var(--primary);
}

.faq-question i {
    transition: transform var(--transition);
}

.faq-item.active .faq-question i {
    transform: rotate(180deg);
}

.faq-answer {
    max-height: 0;
    overflow: hidden;
    transition: max-height var(--transition);
}

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

.faq-answer-content {
    padding: 0 1.5rem 1.5rem;
    color: var(--gray-600);
    line-height: 1.8;
}

/* 表单样式 */
.form-grid {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 2rem;
}

.form-left {
    padding-right: 2rem;
}

.form-right {
    background: var(--gray-50);
    padding: 2rem;
    border-radius: var(--radius-lg);
}

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

.service-type {
    display: flex;
    gap: 0.75rem;
    flex-wrap: wrap;
    margin-bottom: 1.5rem;
}

.service-type-btn {
    padding: 0.5rem 1rem;
    border: 2px solid var(--gray-200);
    border-radius: var(--radius);
    background: white;
    cursor: pointer;
    transition: all var(--transition);
    font-size: 0.875rem;
}

.service-type-btn:hover,
.service-type-btn.active {
    border-color: var(--primary);
    background: var(--primary);
    color: white;
}

.submit-success {
    display: none;
    text-align: center;
    padding: 3rem;
}

.submit-success.show {
    display: block;
}

.submit-success i {
    font-size: 4rem;
    color: var(--primary);
    margin-bottom: 1rem;
}

/* Footer 补充 */
.footer-links {
    list-style: none;
}

.footer-links li {
    margin-bottom: 0.75rem;
}

.footer-links a {
    color: var(--gray-400);
    text-decoration: none;
    transition: color var(--transition);
}

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

/* 技术支持卡片 */
.support-card {
    background: white;
    padding: 2.5rem 2rem;
    border-radius: var(--radius-lg);
    text-align: center;
    box-shadow: var(--shadow);
    transition: all var(--transition);
    position: relative;
    overflow: hidden;
}

.support-card::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    height: 4px;
    background: var(--primary);
    transform: scaleX(0);
    transition: transform var(--transition);
}

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

.support-card:hover::before {
    transform: scaleX(1);
}

.support-card-icon {
    width: 80px;
    height: 80px;
    background: linear-gradient(135deg, var(--primary), var(--primary-light));
    color: white;
    border-radius: var(--radius-lg);
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 2rem;
    margin: 0 auto 1.5rem;
    transition: transform var(--transition);
}

.support-card:hover .support-card-icon {
    transform: scale(1.1);
}

/* 数字动画 */
.counting-number {
    display: inline-block;
}

/* Logo */
.logo-img {
    height: 40px;
    width: auto;
}

/* 合作伙伴网格 */
.partner-grid {
    display: grid;
    grid-template-columns: repeat(5, 1fr);
    gap: 2rem;
}

/* 动画 */
@keyframes fadeInLeft {
    from {
        opacity: 0;
        transform: translateX(-30px);
    }
    to {
        opacity: 1;
        transform: translateX(0);
    }
}

@keyframes fadeInRight {
    from {
        opacity: 0;
        transform: translateX(30px);
    }
    to {
        opacity: 1;
        transform: translateX(0);
    }
}

.reveal-left {
    animation: fadeInLeft 0.8s ease forwards;
}

.reveal-right {
    animation: fadeInRight 0.8s ease forwards;
}