/* ===================================
   颜与泽企业官网 - 主样式表
   设计风格：现代、简洁、专业
   =================================== */

/* CSS Variables - 华为风格 */
:root {
    --primary-color: #cf0a2c;        /* 华为红 */
    --primary-dark: #a00824;         /* 深红 */
    --primary-light: #ff1744;        /* 亮红 */
    --secondary-color: #000000;      /* 黑色 */
    --text-primary: #333333;         /* 主文字色 */
    --text-secondary: #666666;       /* 次要文字 */
    --text-light: #999999;           /* 浅色文字 */
    --bg-white: #ffffff;
    --bg-light: #f5f5f5;             /* 浅灰背景 */
    --bg-gray: #e5e5e5;              /* 灰色背景 */
    --border-color: #e0e0e0;
    --shadow-sm: 0 2px 4px rgba(0, 0, 0, 0.08);
    --shadow-md: 0 4px 12px rgba(0, 0, 0, 0.1);
    --shadow-lg: 0 8px 24px rgba(0, 0, 0, 0.12);
    --transition: all 0.3s cubic-bezier(0.4, 0, 0.2, 1);
}

/* Reset & Base */
* {
    margin: 0;
    padding: 0;
    box-sizing: border-box;
}

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

.container {
    max-width: 1200px;
    margin: 0 auto;
    padding: 80px 20px;
}

/* ===================================
   Navigation - 华为风格
   =================================== */
.navbar {
    background: rgba(255, 255, 255, 0.98);
    backdrop-filter: blur(20px);
    -webkit-backdrop-filter: blur(20px);
    box-shadow: 0 1px 0 rgba(0, 0, 0, 0.05);
    position: sticky;
    top: 0;
    z-index: 1000;
    transition: var(--transition);
    border-bottom: 1px solid var(--border-color);
}

.navbar::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 3px;
    background: var(--primary-color);
}

.navbar.scrolled {
    background: rgba(255, 255, 255, 0.99);
    box-shadow: 0 2px 8px rgba(0, 0, 0, 0.08);
}

.navbar .container {
    display: flex;
    justify-content: space-between;
    align-items: center;
    padding: 0 40px;
    height: 80px;
}

.nav-brand {
    display: flex;
    flex-direction: column;
    justify-content: center;
    height: 100%;
}

.nav-brand a {
    display: flex;
    align-items: center;
    text-decoration: none;
}

.nav-brand h1 {
    font-size: 1.6rem;
    font-weight: 700;
    color: var(--secondary-color);
    margin: 0;
    letter-spacing: -0.5px;
}

.brand-prefix {
    color: var(--primary-color);
    font-weight: 800;
    margin-right: 4px;
    display: inline-block;
}

.brand-subtitle {
    display: block;
    font-size: 0.75rem;
    color: var(--text-secondary);
    margin-top: 2px;
    letter-spacing: 0.5px;
}

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

.nav-menu a {
    text-decoration: none;
    color: var(--text-primary);
    font-weight: 400;
    font-size: 0.95rem;
    padding: 0.5rem 0;
    position: relative;
    transition: var(--transition);
    letter-spacing: 0.3px;
}

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

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

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

.nav-toggle {
    display: none;
    flex-direction: column;
    cursor: pointer;
    gap: 4px;
}

.nav-toggle span {
    width: 25px;
    height: 3px;
    background: var(--text-primary);
    transition: var(--transition);
}

/* ===================================
   Hero Section - 华为风格
   =================================== */
.hero {
    min-height: 650px;
    /* background: linear-gradient(to right, rgba(255, 255, 255, 0.9) 50%, rgba(255, 255, 255, 0.5) 100%), url('../images/hero-bg.jpg') right/cover no-repeat; */
    position: relative;
    display: flex;
    align-items: center;
    text-align: left;
    color: var(--text-primary);
    overflow: hidden;
    padding: 0 0;
}

.hero-slider {
    width: 100%;
    height: 100%;
    position: relative;
}

.hero-slide {
    min-height: 650px;
    /* background: linear-gradient(to right, rgba(255, 255, 255, 0.9) 50%, rgba(255, 255, 255, 0.5) 100%), url('../images/hero-bg.jpg') right/cover no-repeat; */
    position: relative;
    display: flex;
    align-items: center;
    text-align: left;
    color: var(--text-primary);
    overflow: hidden;
    /* padding: 80px 0; */
    transition: opacity 0.5s ease-in-out;
    display: none;
    background-position: right ;
}

.hero-slide::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background:linear-gradient(116deg, rgba(255, 255, 255,0.95) 48%, rgba(255, 255, 255, 0) 47%,rgba(255, 255, 255, 0) 100%);
    z-index: 1;
}

/* 轮播控制按钮 */
.slider-controls {
    position: absolute;
    top: 50%;
    left: 0;
    right: 0;
    transform: translateY(-50%);
    display: flex;
    justify-content: space-between;
    padding: 0 20px;
    z-index: 10;
}

.slider-prev, .slider-next {
    background: rgba(255, 255, 255, 0.8);
    border: none;
    border-radius: 50%;
    width: 50px;
    height: 50px;
    font-size: 24px;
    cursor: pointer;
    display: flex;
    align-items: center;
    justify-content: center;
    transition: all 0.3s ease;
}

.slider-prev:hover, .slider-next:hover {
    background: rgba(255, 255, 255, 1);
    transform: scale(1.1);
}

/* 轮播指示器 */
.slider-indicators {
    position: absolute;
    bottom: 30px;
    left: 50%;
    transform: translateX(-50%);
    display: flex;
    gap: 10px;
    z-index: 10;
}

.indicator {
    width: 12px;
    height: 12px;
    border-radius: 50%;
    border: 2px solid rgba(255, 255, 255, 0.8);
    background: transparent;
    cursor: pointer;
    transition: all 0.3s ease;
}

.indicator.active {
    background: rgba(255, 255, 255, 0.8);
    transform: scale(1.2);
}

.indicator:hover {
    background: rgba(255, 255, 255, 0.5);
}

/* 添加装饰性几何图形 */
.hero-decoration {
    position: absolute;
    bottom: -100px;
    left: -100px;
    width: 400px;
    height: 400px;
    background: radial-gradient(circle, rgba(207, 10, 44, 0.05) 0%, transparent 70%);
    border-radius: 50%;
    text-shadow: 0 0 2px #ddd;
    z-index: 0;
}

.hero-content {
    position: relative;
    z-index: 2;
    max-width: 600px;
    padding: 0 40px;
}

.hero-title {
    font-size: 3.5rem;
    font-weight: 800;
    margin-bottom: 1.5rem;
    color: var(--secondary-color);
    line-height: 1.2;
    letter-spacing: -1px;
    text-shadow: 0 2px 4px rgba(0, 0, 0, 0.1);
}

.hero-brand-prefix {
    color: var(--primary-color);
    font-weight: 900;
    margin-right: 8px;
    display: inline-block;
    text-shadow: 0 2px 4px rgba(207, 10, 44, 0.3);
}

.hero-subtitle {
    font-size: 1.5rem;
    margin-bottom: 1rem;
    color: var(--primary-color);
    font-weight: 600;
    text-shadow: 0 1px 2px rgba(0, 0, 0, 0.1);
}

.hero-description {
    font-size: 1.15rem;
    margin-bottom: 2.5rem;
    color: #424242;
    line-height: 1.8;
    font-weight: 500;
}

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

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

/* ===================================
   Buttons - 华为风格
   =================================== */
.btn {
    display: inline-block;
    padding: 0.75rem 2rem;
    border-radius: 0;
    text-decoration: none;
    font-weight: 500;
    transition: var(--transition);
    border: 1px solid transparent;
    cursor: pointer;
    font-size: 0.95rem;
    position: relative;
    overflow: hidden;
    letter-spacing: 0.5px;
}

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

.btn-primary:hover {
    background: var(--primary-dark);
    border-color: var(--primary-dark);
    transform: translateY(-2px);
    box-shadow: 0 4px 12px rgba(207, 10, 44, 0.3);
}

.btn-secondary {
    background: white;
    color: black;
    border-color: var(--border-color);
}

.btn-secondary:hover {
    background: var(--bg-light);
    border-color: var(--primary-color);
    color: var(--primary-color);
}

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

.btn-outline:hover {
    background: var(--primary-color);
    color: white;
    transform: translateY(-2px);
}

.btn-large {
    padding: 0.875rem 2.5rem;
    font-size: 1rem;
}

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

/* ===================================
   Sections - 华为风格
   =================================== */
section {
    padding: 80px 0;
    position: relative;
}

/* 为交替的section添加浅灰背景 */
/* section:nth-child(even) {
    background: var(--bg-light);
} */

.section-header {
    text-align: left;
    margin-bottom: 3rem;
    padding-left: 40px;
    position: relative;
}

.section-header::before {
    content: '';
    position: absolute;
    left: 0;
    top: 50%;
    transform: translateY(-50%);
    width: 4px;
    height: 40px;
    background: var(--primary-color);
}

.section-header h2 {
    font-size: 2.25rem;
    font-weight: 700;
    margin-bottom: 0.75rem;
    color: var(--secondary-color);
    letter-spacing: -0.5px;
}

.section-header p {
    font-size: 1rem;
    color: var(--text-secondary);
    font-weight: 300;
}

/* ===================================
   Features Section
   =================================== */
.features {
    background: var(--bg-white);
    position: relative;
}

.features::before {
    content: '';
    position: absolute;
    top: 50%;
    right: -200px;
    width: 400px;
    height: 400px;
    background: radial-gradient(circle, rgba(207, 10, 44, 0.03) 0%, transparent 70%);
    border-radius: 50%;
    pointer-events: none;
}

.features-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(250px, 1fr));
    gap: 2rem;
    padding: 0 40px;
}

.feature-card {
    background: var(--bg-white);
    padding: 2.5rem 2rem;
    border-radius: 0;
    text-align: left;
    box-shadow: none;
    transition: var(--transition);
    position: relative;
    overflow: hidden;
    border-left: 3px solid transparent;
}

.feature-card::before {
    content: '';
    position: absolute;
    top: 0;
    right: 0;
    width: 100px;
    height: 100px;
    background: linear-gradient(135deg, rgba(207, 10, 44, 0.05) 0%, transparent 100%);
    transition: var(--transition);
}

.feature-card:hover::before {
    width: 150px;
    height: 150px;
}

.feature-card:hover {
    border-left-color: var(--primary-color);
    background: var(--bg-light);
    box-shadow: var(--shadow-md);
}

.feature-icon {
    font-size: 2.5rem;
    margin-bottom: 1.5rem;
    width: 70px;
    height: 70px;
    display: flex;
    align-items: center;
    justify-content: center;
    background: linear-gradient(135deg, rgba(207, 10, 44, 0.08) 0%, rgba(207, 10, 44, 0.03) 100%);
    border-radius: 0;
    position: relative;
}

.feature-icon::after {
    content: '';
    position: absolute;
    bottom: -5px;
    right: -5px;
    width: 20px;
    height: 20px;
    background: var(--primary-color);
    opacity: 0.1;
}

.feature-card h3 {
    font-size: 1.25rem;
    margin-bottom: 1rem;
    color: var(--secondary-color);
    font-weight: 600;
}

.feature-card p {
    color: var(--text-secondary);
    line-height: 1.8;
    font-size: 0.95rem;
}

/* ===================================
   Business Section
   =================================== */
.business-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(320px, 1fr));
    gap: 2rem;
    padding: 0 40px;
}

.business-card {
    background: var(--bg-white);
    padding: 2.5rem;
    border-radius: 0;
    box-shadow: var(--shadow-sm);
    transition: var(--transition);
    border: 1px solid var(--border-color);
    position: relative;
    overflow: hidden;
}

.business-card::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    width: 4px;
    height: 0;
    background: var(--primary-color);
    transition: height 0.3s ease;
}

.business-card::after {
    content: '';
    position: absolute;
    top: -50%;
    right: -50%;
    width: 200%;
    height: 200%;
    background: linear-gradient(45deg, transparent, rgba(207, 10, 44, 0.05), transparent);
    transform: rotate(45deg);
    transition: all 0.6s ease;
    opacity: 0;
}

.business-card:hover::before {
    height: 100%;
}

.business-card:hover::after {
    opacity: 1;
    right: 100%;
}

.business-card:hover {
    border-color: var(--primary-color);
    box-shadow: 0 10px 30px rgba(207, 10, 44, 0.15);
    transform: translateY(-6px);
}

.business-icon {
    font-size: 3.5rem;
    margin-bottom: 1.5rem;
    display: inline-block;
    position: relative;
    transition: transform 0.3s ease;
}

.business-card:hover .business-icon {
    transform: scale(1.1) rotate(5deg);
}

.business-icon::after {
    content: '';
    position: absolute;
    bottom: -8px;
    left: 0;
    width: 40px;
    height: 3px;
    background: var(--primary-color);
    transition: width 0.3s ease;
}

.business-card:hover .business-icon::after {
    width: 60px;
}

.business-card h3 {
    font-size: 1.5rem;
    margin-bottom: 1.5rem;
    color: var(--text-primary);
    transition: color 0.3s ease;
}

.business-card:hover h3 {
    color: var(--primary-color);
}

.business-card ul {
    list-style: none;
    margin-bottom: 1.5rem;
}

.business-card li {
    padding: 0.5rem 0;
    color: var(--text-secondary);
    position: relative;
    padding-left: 1.5rem;
    transition: color 0.3s ease;
}

.business-card:hover li {
    color: var(--text-primary);
}

.business-card li::before {
    content: '✓';
    position: absolute;
    left: 0;
    color: var(--primary-color);
    font-weight: bold;
    transition: transform 0.3s ease;
}

.business-card:hover li::before {
    transform: scale(1.2);
}

.btn-link {
    color: var(--primary-color);
    text-decoration: none;
    font-weight: 600;
    transition: var(--transition);
    position: relative;
    display: inline-block;
}

.btn-link::after {
    content: '';
    position: absolute;
    bottom: -2px;
    left: 0;
    width: 0;
    height: 2px;
    background: var(--primary-color);
    transition: width 0.3s ease;
}

.btn-link:hover {
    color: var(--primary-dark);
    transform: translateX(5px);
}

.btn-link:hover::after {
    width: 100%;
}

/* ===================================
   News Section
   =================================== */
.news-section {
    background: var(--bg-light);
}

.news-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(320px, 1fr));
    gap: 2rem;
    margin-bottom: 2rem;
    padding: 0 40px;
}

.news-card {
    background: var(--bg-white);
    border-radius: 0;
    overflow: hidden;
    box-shadow: var(--shadow-sm);
    transition: var(--transition);
    border: 1px solid var(--border-color);
    position: relative;
    overflow: hidden;
}

.news-card::before {
    content: '';
    position: absolute;
    top: 0;
    left: -100%;
    width: 100%;
    height: 100%;
    background: linear-gradient(90deg, transparent, rgba(207, 10, 44, 0.05), transparent);
    transition: left 0.6s ease;
    z-index: 1;
}

.news-card:hover::before {
    left: 100%;
}

.news-card:hover {
    box-shadow: 0 12px 35px rgba(207, 10, 44, 0.15);
    transform: translateY(-8px);
    border-color: var(--primary-color);
}

.news-image {
    overflow: hidden;
    position: relative;
    z-index: 0;
}

.news-image::after {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    background: linear-gradient(to bottom, transparent 50%, rgba(207, 10, 44, 0.2) 100%);
    opacity: 0;
    transition: opacity 0.3s ease;
    z-index: 1;
}

.news-card:hover .news-image::after {
    opacity: 1;
}

.news-image img {
    width: 100%;
    height: 240px;
    object-fit: cover;
    transition: transform 0.5s ease;
}

.news-card:hover .news-image img {
    transform: scale(1.1) rotate(1deg);
}

.news-content {
    padding: 1.5rem;
    position: relative;
    z-index: 2;
}

.news-category {
    display: inline-block;
    padding: 0.35rem 1rem;
    background: var(--primary-color);
    color: white;
    border-radius: 0;
    font-size: 0.8rem;
    margin-bottom: 0.75rem;
    font-weight: 500;
    letter-spacing: 0.5px;
    position: relative;
    transition: var(--transition);
}

.news-card:hover .news-category {
    background: var(--primary-dark);
    transform: translateX(5px);
}

.news-category::after {
    content: '';
    position: absolute;
    bottom: -4px;
    left: 0;
    width: 100%;
    height: 2px;
    background: rgba(207, 10, 44, 0.3);
    transition: width 0.3s ease;
}

.news-card:hover .news-category::after {
    width: 80%;
}

.news-card h3 {
    font-size: 1.25rem;
    margin-bottom: 0.75rem;
    transition: var(--transition);
}

.news-card:hover h3 {
    transform: translateY(-2px);
}

.news-card h3 a {
    color: var(--text-primary);
    text-decoration: none;
    transition: var(--transition);
    position: relative;
}

.news-card h3 a::after {
    content: '';
    position: absolute;
    bottom: -2px;
    left: 0;
    width: 0;
    height: 2px;
    background: var(--primary-color);
    transition: width 0.3s ease;
}

.news-card h3 a:hover {
    color: var(--primary-color);
}

.news-card h3 a:hover::after {
    width: 100%;
}

.news-summary {
    color: var(--text-secondary);
    margin-bottom: 1rem;
    line-height: 1.6;
    transition: color 0.3s ease;
}

.news-card:hover .news-summary {
    color: var(--text-primary);
}

.news-meta {
    display: flex;
    justify-content: space-between;
    color: var(--text-secondary);
    font-size: 0.9rem;
    transition: color 0.3s ease;
}

.news-card:hover .news-meta {
    color: var(--text-light);
}

/* ===================================
   Products Section
   =================================== */
.products-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(280px, 1fr));
    gap: 2rem;
    margin-bottom: 2rem;
    padding: 0 40px;
}

.product-card {
    background: var(--bg-white);
    border-radius: 0;
    overflow: hidden;
    box-shadow: var(--shadow-sm);
    transition: var(--transition);
    border: 1px solid var(--border-color);
    position: relative;
    overflow: hidden;
}

.product-card::before {
    content: '';
    position: absolute;
    top: 0;
    left: -100%;
    width: 100%;
    height: 100%;
    background: linear-gradient(90deg, transparent, rgba(207, 10, 44, 0.05), transparent);
    transition: left 0.6s ease;
    z-index: 1;
}

.product-card:hover::before {
    left: 100%;
}

.product-card:hover {
    box-shadow: 0 12px 35px rgba(207, 10, 44, 0.15);
    transform: translateY(-8px);
    border-color: var(--primary-color);
}

.product-image {
    overflow: hidden;
    position: relative;
    z-index: 0;
}

.product-image::after {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    background: linear-gradient(to bottom, transparent 50%, rgba(207, 10, 44, 0.15) 100%);
    opacity: 0;
    transition: opacity 0.3s ease;
    z-index: 1;
}

.product-card:hover .product-image::after {
    opacity: 1;
}

.product-image img {
    width: 100%;
    height: 240px;
    object-fit: cover;
    transition: transform 0.5s ease;
}

.product-card:hover .product-image img {
    transform: scale(1.1) rotate(1deg);
}

.product-info {
    padding: 1.5rem;
    position: relative;
    z-index: 2;
}

.product-category {
    display: inline-block;
    padding: 0.35rem 1rem;
    background: var(--bg-light);
    color: var(--primary-color);
    border-radius: 0;
    font-size: 0.8rem;
    margin-bottom: 0.75rem;
    font-weight: 500;
    letter-spacing: 0.5px;
    border-left: 2px solid var(--primary-color);
    transition: var(--transition);
}

.product-card:hover .product-category {
    background: var(--primary-color);
    color: white;
    transform: translateX(5px);
}

.product-info h3 {
    font-size: 1.25rem;
    margin-bottom: 0.75rem;
    color: var(--text-primary);
    transition: color 0.3s ease;
}

.product-card:hover .product-info h3 {
    color: var(--primary-color);
}

.product-info p {
    color: var(--text-secondary);
    line-height: 1.6;
    transition: color 0.3s ease;
}

.product-card:hover .product-info p {
    color: var(--text-primary);
}

/* ===================================
   Business Areas Section
   =================================== */
.business-areas-section {
    padding: 6rem 0;
}

.business-areas-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(320px, 1fr));
    gap: 2rem;
    margin-top: 3rem;
    padding: 0 40px;
}

.business-area-card {
    background: var(--bg-white);
    padding: 2.5rem;
    border-radius: 0;
    box-shadow: var(--shadow-sm);
    transition: var(--transition);
    border: 1px solid var(--border-color);
    position: relative;
    overflow: hidden;
    text-align: center;
}

.business-area-card::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    width: 4px;
    height: 0;
    background: var(--primary-color);
    transition: height 0.3s ease;
}

.business-area-card:hover {
    box-shadow: 0 12px 35px rgba(207, 10, 44, 0.15);
    transform: translateY(-8px);
    border-color: var(--primary-color);
}

.business-area-card:hover::before {
    height: 100%;
}

.business-area-icon {
    font-size: 3rem;
    margin-bottom: 1.5rem;
    display: block;
    transition: transform 0.3s ease;
}

.business-area-card:hover .business-area-icon {
    transform: scale(1.1) rotate(5deg);
}

.business-area-card h3 {
    font-size: 1.25rem;
    margin-bottom: 1rem;
    color: var(--text-primary);
    font-weight: 600;
    transition: color 0.3s ease;
}

.business-area-card:hover h3 {
    color: var(--primary-color);
}

.business-area-card p {
    color: var(--text-secondary);
    line-height: 1.6;
    transition: color 0.3s ease;
}

.business-area-card:hover p {
    color: var(--text-primary);
}

/* ===================================
   Core Advantages Section
   =================================== */
.core-advantages-section {
    background: var(--bg-light);
    padding: 6rem 0;
}

.advantages-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(280px, 1fr));
    gap: 2rem;
    margin-top: 3rem;
    padding: 0 40px;
}

.advantage-card {
    background: var(--bg-white);
    padding: 2.5rem;
    border-radius: 0;
    box-shadow: var(--shadow-sm);
    transition: var(--transition);
    border: 1px solid var(--border-color);
    text-align: center;
    position: relative;
    overflow: hidden;
}

.advantage-card::before {
    content: '';
    position: absolute;
    top: -100%;
    left: -100%;
    width: 100%;
    height: 100%;
    background: linear-gradient(90deg, transparent, rgba(207, 10, 44, 0.05), transparent);
    transition: all 0.6s ease;
    z-index: 1;
}

.advantage-card:hover::before {
    top: 100%;
    left: 100%;
}

.advantage-card:hover {
    box-shadow: 0 12px 35px rgba(207, 10, 44, 0.15);
    transform: translateY(-8px);
    border-color: var(--primary-color);
}

.advantage-icon {
    font-size: 3rem;
    margin-bottom: 1.5rem;
    display: block;
    transition: transform 0.3s ease;
}

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

.advantage-card h3 {
    font-size: 1.25rem;
    margin-bottom: 1rem;
    color: var(--text-primary);
    font-weight: 600;
    transition: color 0.3s ease;
    position: relative;
    z-index: 2;
}

.advantage-card:hover h3 {
    color: var(--primary-color);
}

.advantage-card p {
    color: var(--text-secondary);
    line-height: 1.6;
    transition: color 0.3s ease;
    position: relative;
    z-index: 2;
}

.advantage-card:hover p {
    color: var(--text-primary);
}

/* ===================================
   Table Styles
   =================================== */
.table-container {
    width: 100%;
    overflow-x: auto;
    margin: 2rem 0;
}

.table-container table {
    width: 100%;
    border-collapse: collapse;
    font-size: 0.95rem;
}

.table-container th,
.table-container td {
    padding: 12px 15px;
    text-align: left;
    border-bottom: 1px solid var(--border-color);
}

.table-container th {
    background-color: var(--bg-light);
    font-weight: 600;
    color: var(--text-primary);
}

.table-container tr:hover {
    background-color: var(--bg-light);
}

/* ===================================
   CTA Section - 华为风格
   =================================== */
.cta-section {
    background: #333333;
    color: white;
    text-align: center;
    padding: 100px 0;
    position: relative;
    overflow: hidden;
}

.cta-section::before {
    content: '';
    position: absolute;
    top: -50%;
    right: -10%;
    width: 600px;
    height: 600px;
    background: radial-gradient(circle, rgba(255, 255, 255, 0.1) 0%, transparent 70%);
    border-radius: 50%;
}

.cta-section::after {
    content: '';
    position: absolute;
    bottom: -30%;
    left: -5%;
    width: 400px;
    height: 400px;
    background: radial-gradient(circle, rgba(255, 255, 255, 0.08) 0%, transparent 70%);
    border-radius: 50%;
}

.cta-section h2 {
    font-size: 2.5rem;
    margin-bottom: 1rem;
    font-weight: 700;
    color: white;
}

.cta-section p {
    font-size: 1.1rem;
    margin-bottom: 2.5rem;
    opacity: 1;
    font-weight: 400;
    color: #f0f0f0;
}

.cta-section .btn-primary {
    background: var(--primary-color);
    border-color: var(--primary-color);
}

.cta-section .btn-primary:hover {
    background: var(--primary-light);
    border-color: var(--primary-light);
}

/* ===================================
   Page Hero - 华为风格
   =================================== */
.page-hero {
    background: var(--bg-light);
    color: var(--text-primary);
    padding: 80px 0;
    text-align: left;
    border-bottom: 1px solid var(--border-color);
}

.page-hero .container {
    padding-left: 40px;
}

.page-hero h1 {
    font-size: 2.5rem;
    margin-bottom: 0.75rem;
    font-weight: 700;
    color: var(--secondary-color);
    letter-spacing: -0.5px;
}

.page-hero p {
    font-size: 1.05rem;
    color: var(--text-secondary);
    font-weight: 300;
}

.page-hero .hero-description {
    font-size: 1.15rem;
    margin-top: 1rem;
    color: #424242;
    line-height: 1.8;
    font-weight: 500;
    max-width: 800px;
}

/* ===================================
   About Page
   =================================== */
.about-section {
    background: var(--bg-light);
    padding: 6rem 0;
}

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

.about-text h2 {
    font-size: 2.5rem;
    margin-bottom: 1.5rem;
    color: var(--text-primary);
    text-align: center;
}

.about-intro {
    font-size: 1.2rem;
    line-height: 1.8;
    color: var(--text-primary);
    font-weight: 500;
    margin-bottom: 1.5rem;
    text-align: center;
}

.about-text p {
    font-size: 1.1rem;
    line-height: 1.8;
    color: var(--text-secondary);
    margin-bottom: 1.5rem;
    text-align: center;
}

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

.model-card {
    background: white;
    padding: 2.5rem;
    border-radius: 16px;
    box-shadow: var(--shadow-md);
    position: relative;
    overflow: hidden;
    transition: var(--transition);
}

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

.model-number {
    position: absolute;
    top: 20px;
    right: 20px;
    font-size: 4rem;
    font-weight: 700;
    color: var(--primary-color);
    opacity: 0.1;
    transition: var(--transition);
}

.model-card:hover .model-number {
    opacity: 0.2;
    transform: scale(1.1);
}

.model-card h3 {
    font-size: 1.5rem;
    margin-bottom: 1rem;
    color: var(--text-primary);
}

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

.capability-category {
    background: white;
    padding: 2rem;
    border-radius: 12px;
    box-shadow: var(--shadow-md);
    transition: var(--transition);
    position: relative;
    overflow: hidden;
}

.capability-category::before {
    content: '';
    position: absolute;
    top: -50%;
    left: -50%;
    width: 200%;
    height: 200%;
    background: linear-gradient(45deg, transparent, rgba(255,255,255,0.3), transparent);
    transform: rotate(45deg);
    transition: all 0.5s ease;
    opacity: 0;
}

.capability-category:hover::before {
    opacity: 1;
    left: 100%;
}

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

.capability-category h3 {
    font-size: 1.5rem;
    margin-bottom: 1.5rem;
    color: var(--text-primary);
}

.capability-category ul {
    list-style: none;
}

.capability-category li {
    padding: 0.5rem 0;
    padding-left: 1.5rem;
    position: relative;
    color: var(--text-secondary);
}

.capability-category li::before {
    content: '▸';
    position: absolute;
    left: 0;
    color: var(--primary-color);
}

.vision-section {
    background: linear-gradient(135deg, #667eea 0%, #764ba2 100%);
    color: white;
    position: relative;
    overflow: hidden;
}

.vision-section::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    background: url('../images/about-team.jpg') center/cover no-repeat;
    opacity: 0.2;
}

.vision-content {
    text-align: center;
    position: relative;
    z-index: 1;
}

.vision-text {
    font-size: 1.3rem;
    line-height: 2;
    margin: 2rem 0;
}

.vision-values {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(200px, 1fr));
    gap: 2rem;
    margin-top: 3rem;
}

.value-item h4 {
    font-size: 1.5rem;
    margin-bottom: 0.5rem;
}

/* ===================================
   Business Detail Page
   =================================== */
.category-nav {
    background: var(--bg-light);
    padding: 1.5rem 0;
}

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

.nav-tab {
    padding: 0.75rem 2rem;
    background: white;
    color: var(--text-primary);
    text-decoration: none;
    border-radius: 50px;
    font-weight: 500;
    transition: var(--transition);
    box-shadow: var(--shadow-sm);
}

.nav-tab:hover,
.nav-tab.active {
    background: var(--primary-color);
    color: white;
}

.business-detail {
    margin-bottom: 4rem;
}

.business-detail.hidden {
    display: none;
}

.detail-header {
    display: flex;
    align-items: center;
    gap: 1.5rem;
    margin-bottom: 2rem;
    padding-bottom: 1.5rem;
    border-bottom: 3px solid var(--primary-color);
}

.detail-icon {
    font-size: 4rem;
}

.detail-header h2 {
    font-size: 2rem;
    color: var(--text-primary);
    margin-bottom: 0.25rem;
}

.detail-header p {
    color: var(--text-secondary);
    font-style: italic;
}

.product-list {
    list-style: none;
    margin: 1.5rem 0;
}

.product-list li {
    padding: 0.75rem 0;
    border-bottom: 1px solid var(--border-color);
}

.capability-tags {
    display: flex;
    flex-wrap: wrap;
    gap: 0.75rem;
    margin-top: 1rem;
}

.tag {
    padding: 0.5rem 1rem;
    background: var(--bg-light);
    color: var(--primary-color);
    border-radius: 20px;
    font-size: 0.9rem;
    font-weight: 500;
}

.products-showcase {
    background: var(--bg-light);
}

.product-features {
    margin-top: 1rem;
    padding-top: 1rem;
    border-top: 1px solid var(--border-color);
    color: var(--text-secondary);
    font-size: 0.9rem;
}

/* ===================================
   News List Page
   =================================== */
.news-filter {
    background: var(--bg-light);
    padding: 1.5rem 0;
}

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

.filter-tab {
    padding: 0.75rem 2rem;
    background: white;
    color: var(--text-primary);
    text-decoration: none;
    border-radius: 50px;
    font-weight: 500;
    transition: var(--transition);
}

.filter-tab:hover,
.filter-tab.active {
    background: var(--primary-color);
    color: white;
}

.news-list-section {
    min-height: 500px;
}

.news-list {
    display: grid;
    gap: 2rem;
}

.news-item {
    background: var(--bg-white);
    padding: 2rem;
    border-radius: 0;
    box-shadow: var(--shadow-sm);
    transition: var(--transition);
    border-left: 3px solid transparent;
}

.news-item:hover {
    box-shadow: var(--shadow-md);
    border-left-color: var(--primary-color);
    transform: translateX(4px);
}

.news-item-header {
    margin-bottom: 1rem;
}

.news-category-badge {
    display: inline-block;
    padding: 0.25rem 0.75rem;
    background: var(--primary-color);
    color: white;
    border-radius: 20px;
    font-size: 0.85rem;
    margin-bottom: 0.75rem;
}

.news-item h2 {
    font-size: 1.5rem;
    margin-bottom: 0.75rem;
}

.news-item h2 a {
    color: var(--text-primary);
    text-decoration: none;
    transition: var(--transition);
}

.news-item h2 a:hover {
    color: var(--primary-color);
}

.news-item-meta {
    display: flex;
    gap: 1.5rem;
    color: var(--text-secondary);
    font-size: 0.9rem;
}

.news-item-summary {
    color: var(--text-secondary);
    line-height: 1.8;
    margin-bottom: 1rem;
}

.read-more {
    color: var(--primary-color);
    text-decoration: none;
    font-weight: 600;
    transition: var(--transition);
}

.read-more:hover {
    color: var(--primary-dark);
}

.pagination {
    display: flex;
    justify-content: center;
    align-items: center;
    gap: 2rem;
    margin-top: 3rem;
}

.page-link {
    padding: 0.75rem 1.5rem;
    background: white;
    color: var(--primary-color);
    text-decoration: none;
    border-radius: 8px;
    font-weight: 500;
    box-shadow: var(--shadow-sm);
    transition: var(--transition);
}

.page-link:hover {
    background: var(--primary-color);
    color: white;
}

.page-info {
    color: var(--text-secondary);
}

.empty-state {
    text-align: center;
    padding: 4rem 2rem;
}

.empty-icon {
    font-size: 4rem;
    margin-bottom: 1rem;
}

.empty-state h3 {
    font-size: 1.5rem;
    margin-bottom: 0.5rem;
    color: var(--text-primary);
}

.empty-state p {
    color: var(--text-secondary);
}

/* ===================================
   Article Page
   =================================== */
.article-page {
    padding: 3rem 0;
}

.article-header {
    max-width: 800px;
    margin: 0 auto 2rem;
    text-align: center;
}

.article-category {
    display: inline-block;
    padding: 0.5rem 1rem;
    background: var(--primary-color);
    color: white;
    border-radius: 20px;
    font-size: 0.9rem;
    margin-bottom: 1rem;
}

.article-header h1 {
    font-size: 2.5rem;
    margin-bottom: 1rem;
    color: var(--text-primary);
}

.article-meta {
    display: flex;
    justify-content: center;
    gap: 2rem;
    color: var(--text-secondary);
}

.article-featured-image {
    max-width: 900px;
    margin: 2rem auto;
    border-radius: 12px;
    overflow: hidden;
    box-shadow: var(--shadow-lg);
}

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

.article-content {
    max-width: 800px;
    margin: 0 auto;
    font-size: 1.1rem;
    line-height: 2;
    color: var(--text-primary);
    white-space: pre-wrap;
}

.article-content p {
    margin-bottom: 1.5rem;
}

.article-footer {
    max-width: 800px;
    margin: 3rem auto 0;
    padding-top: 2rem;
    border-top: 2px solid var(--border-color);
}

.share-section {
    display: flex;
    align-items: center;
    gap: 1rem;
}

.share-buttons {
    display: flex;
    gap: 0.5rem;
}

.share-btn {
    padding: 0.5rem 1rem;
    background: var(--bg-light);
    border: none;
    border-radius: 6px;
    cursor: pointer;
    transition: var(--transition);
}

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

.related-news {
    background: var(--bg-light);
    padding: 3rem 0;
}

.related-news h2 {
    text-align: center;
    margin-bottom: 2rem;
    font-size: 2rem;
}

.related-news-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
    gap: 1.5rem;
}

.related-news-item {
    background: white;
    padding: 1.5rem;
    border-radius: 12px;
    text-decoration: none;
    box-shadow: var(--shadow-sm);
    transition: var(--transition);
}

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

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

.related-date {
    color: var(--text-secondary);
    font-size: 0.9rem;
}

/* ===================================
   Contact Page
   =================================== */
.contact-section {
    background: var(--bg-light);
}

.contact-grid {
    display: grid;
    grid-template-columns: 1fr 1.5fr;
    gap: 3rem;
}

.contact-info {
    background: white;
    padding: 2.5rem;
    border-radius: 16px;
    box-shadow: var(--shadow-md);
}

.contact-info h2 {
    font-size: 2rem;
    margin-bottom: 1rem;
}

.contact-intro {
    color: var(--text-secondary);
    margin-bottom: 2rem;
}

.info-items {
    display: grid;
    gap: 1.5rem;
    margin-bottom: 2rem;
}

.info-item {
    display: flex;
    align-items: flex-start;
    gap: 1rem;
}

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

.info-item h4 {
    font-size: 1.1rem;
    margin-bottom: 0.25rem;
    color: var(--text-primary);
}

.info-item p {
    color: var(--text-secondary);
}

.social-links h4 {
    margin-bottom: 1rem;
    color: var(--text-primary);
}

.social-icons {
    display: flex;
    gap: 1rem;
}

.social-icon {
    width: 45px;
    height: 45px;
    display: flex;
    align-items: center;
    justify-content: center;
    background: var(--bg-light);
    border-radius: 50%;
    text-decoration: none;
    font-size: 1.5rem;
    transition: var(--transition);
}

.social-icon:hover {
    background: var(--primary-color);
    transform: translateY(-3px);
}

.contact-form-wrapper {
    background: white;
    padding: 2.5rem;
    border-radius: 16px;
    box-shadow: var(--shadow-md);
}

.contact-form-wrapper h2 {
    font-size: 2rem;
    margin-bottom: 0.5rem;
}

.form-intro {
    color: var(--text-secondary);
    margin-bottom: 2rem;
}

.contact-form {
    display: grid;
    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: 500;
    color: var(--text-primary);
}

.required {
    color: #ef4444;
}

.form-group input,
.form-group textarea {
    padding: 0.75rem 1rem;
    border: 2px solid var(--border-color);
    border-radius: 8px;
    font-size: 1rem;
    transition: var(--transition);
    font-family: inherit;
}

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

.form-message {
    margin-top: 1rem;
    padding: 1rem;
    border-radius: 8px;
    text-align: center;
}

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

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

.map-section {
    padding: 3rem 0;
}

.map-placeholder {
    background: var(--bg-light);
    border-radius: 12px;
    height: 400px;
    display: flex;
    align-items: center;
    justify-content: center;
}

.map-content {
    text-align: center;
}

.map-icon {
    font-size: 4rem;
    margin-bottom: 1rem;
}

.map-content h3 {
    font-size: 1.5rem;
    margin-bottom: 0.5rem;
    color: var(--text-primary);
}

.map-content p {
    color: var(--text-secondary);
}

/* ===================================
   Footer - 华为风格
   =================================== */
.footer {
    background: var(--bg-light);
    color: var(--text-primary);
    padding: 60px 0 30px;
    border-top: 1px solid var(--border-color);
    position: relative;
}

.footer::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 4px;
    background: linear-gradient(to right, var(--primary-color) 0%, rgba(207, 10, 44, 0.5) 50%, transparent 100%);
}

.footer-content {
    display: grid;
    grid-template-columns: 2fr 1fr 1fr;
    gap: 3rem;
    margin-bottom: 3rem;
    padding: 0 40px;
}

.footer-section h3 {
    font-size: 1.5rem;
    margin-bottom: 1rem;
    color: var(--secondary-color);
    font-weight: 700;
}

.footer-section h4 {
    font-size: 1rem;
    margin-bottom: 1.25rem;
    color: var(--secondary-color);
    font-weight: 600;
    text-transform: uppercase;
    letter-spacing: 0.5px;
}

.footer-section p {
    color: var(--text-secondary);
    line-height: 1.8;
    font-size: 0.9rem;
}

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

.footer-section li {
    padding: 0.4rem 0;
    font-size: 0.9rem;
}

.footer-section a {
    color: var(--text-secondary);
    text-decoration: none;
    transition: var(--transition);
}

.footer-section a:hover {
    color: var(--primary-color);
}

.footer-bottom {
    text-align: center;
    padding-top: 2rem;
    border-top: 1px solid var(--border-color);
    color: var(--text-light);
    font-size: 0.85rem;
}

/* ===================================
   Responsive Design
   =================================== */
@media (max-width: 768px) {
    .nav-menu {
        display: none;
    }
    
    .nav-toggle {
        display: flex;
    }
    
    .hero-title {
        font-size: 2.5rem;
    }
    
    .hero-subtitle {
        font-size: 1.2rem;
    }
    
    .section-header h2 {
        font-size: 2rem;
    }
    
    .contact-grid {
        grid-template-columns: 1fr;
    }
    
    .form-row {
        grid-template-columns: 1fr;
    }
    
    .footer-content {
        grid-template-columns: 1fr;
        text-align: center;
    }
}

@media (max-width: 480px) {
    .hero-title {
        font-size: 2rem;
    }
    
    .hero-buttons {
        flex-direction: column;
    }
    
    .btn {
        width: 100%;
    }
}

/* ===================================
   Utility Classes
   =================================== */
.text-center {
    text-align: center;
}

.mt-1 { margin-top: 0.5rem; }
.mt-2 { margin-top: 1rem; }
.mt-3 { margin-top: 1.5rem; }
.mt-4 { margin-top: 2rem; }

.mb-1 { margin-bottom: 0.5rem; }
.mb-2 { margin-bottom: 1rem; }
.mb-3 { margin-bottom: 1.5rem; }
.mb-4 { margin-bottom: 2rem; }

/* ===================================
   Custom Scrollbar - 华为风格
   =================================== */
::-webkit-scrollbar {
    width: 8px;
    height: 8px;
}

::-webkit-scrollbar-track {
    background: var(--bg-light);
}

::-webkit-scrollbar-thumb {
    background: var(--border-color);
    border-radius: 4px;
}

::-webkit-scrollbar-thumb:hover {
    background: var(--text-light);
}

/* ===================================
   Text Selection - 华为风格
   =================================== */
::selection {
    background: var(--primary-color);
    color: white;
}

::-moz-selection {
    background: var(--primary-color);
    color: white;
}