/* ===== 重置与基础样式 ===== */
:root {
    /* 主色调板 */
    --primary-color: #0056D6;        /* 专业蓝 */
    --primary-light: #3A7BFF;        /* 浅蓝 */
    --primary-dark: #003B8B;         /* 深蓝 */
    
    /* 强调色 */
    --accent-color: #FF6B35;         /* 橙色强调色 */
    --accent-light: #FF9E6D;         /* 浅橙色 */
    
    /* 中性色 */
    --white: #FFFFFF;
    --light-gray: #F8F9FA;
    --medium-gray: #E9ECEF;
    --dark-gray: #6C757D;
    --text-dark: #212529;
    
    /* 功能色 */
    --success: #28A745;
    --warning: #FFC107;
    --error: #DC3545;
    
    /* 渐变 */
    --gradient-primary: linear-gradient(135deg, #0056D6, #3A7BFF);
    --gradient-accent: linear-gradient(135deg, #FF6B35, #FF9E6D);
    
    /* 阴影 */
    --shadow-sm: 0 2px 4px rgba(0, 0, 0, 0.05);
    --shadow-md: 0 4px 8px rgba(0, 0, 0, 0.08);
    --shadow-lg: 0 8px 16px rgba(0, 0, 0, 0.1);
    --shadow-xl: 0 12px 24px rgba(0, 0, 0, 0.12);
    
    /* 过渡 */
    --transition-fast: 0.2s ease;
    --transition-normal: 0.3s ease;
    --transition-slow: 0.5s ease;
}

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

html {
    scroll-behavior: smooth;
    scroll-padding-top: 80px;
}

body {
    font-family: 'Inter', -apple-system, BlinkMacSystemFont, 'Segoe UI', sans-serif;
    line-height: 1.6;
    color: var(--text-dark);
    background-color: var(--white);
    overflow-x: hidden;
    width: 100%;
}

/* ===== 全宽容器 ===== */
.section-full {
    width: 100%;
    padding: 100px 40px; /* 只留少量边距 */
}

/* 标题容器 */
.section-header {
    width: 100%;
    text-align: center;
    margin-bottom: 60px;
    padding: 0 20px;
}

/* ===== 排版 ===== */
h1, h2, h3, h4, h5, h6 {
    font-weight: 700;
    line-height: 1.2;
    margin-bottom: 1rem;
    color: var(--text-dark);
}

h1 {
    font-size: 3.5rem;
    letter-spacing: -0.5px;
}

h2 {
    font-size: 2.5rem;
    position: relative;
    display: inline-block;
}

h2::after {
    content: '';
    position: absolute;
    bottom: -10px;
    left: 0;
    width: 60px;
    height: 4px;
    background: var(--gradient-primary);
    border-radius: 2px;
}

h3 {
    font-size: 1.75rem;
}

p {
    font-size: 1.125rem;
    margin-bottom: 1.5rem;
    color: var(--dark-gray);
}

.lead {
    font-size: 1.25rem;
    font-weight: 300;
    line-height: 1.6;
}

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

/* ===== 链接 ===== */
a {
    color: var(--primary-color);
    text-decoration: none;
    transition: color var(--transition-fast);
}

a:hover {
    color: var(--primary-dark);
}

/* ===== 按钮 ===== */
.btn {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    padding: 10px;
    border-radius: 8px;
    font-weight: 600;
    font-size: 0.9rem;
    cursor: pointer;
    border: none;
    transition: all var(--transition-normal);
    gap: 8px;
    text-transform: uppercase;
    letter-spacing: 0.5px;
}

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

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

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

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

.btn-large {
    padding: 16px 40px;
    font-size: 1.125rem;
}

/* ===== 头部导航 ===== */
.header {
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    z-index: 1000;
    transition: all var(--transition-normal);
    background: transparent;
    padding: 20px 0;
}

.header.scrolled {
    background: var(--white);
    box-shadow: var(--shadow-lg);
    padding: 15px 0;
}

.header-container {
    display: flex;
    justify-content: space-between;
    align-items: center;
    width: 100%;
    padding: 0 40px;
}

/* 徽标 */
.logo {
    display: flex;
    align-items: center;
    gap: 12px;
    z-index: 1001;
}

.logo-icon {
    width: 40px;
    height: 40px;
    background: var(--gradient-primary);
    border-radius: 8px;
    display: flex;
    align-items: center;
    justify-content: center;
    color: var(--white);
    font-size: 1.5rem;
}

.logo-text {
    font-size: 1.5rem;
    font-weight: 700;
    color: var(--white);
    transition: color var(--transition-normal);
}

.header.scrolled .logo-text {
    color: var(--text-dark);
}

.logo span {
    color: var(--accent-color);
}

/* 导航菜单 */
.nav {
    display: flex;
    align-items: center;
    gap: 30px;
}

.nav-menu {
    display: flex;
    list-style: none;
    gap: 2px;
}

.nav-link {
    color: var(--white);
    padding: 8px 20px;
    border-radius: 6px;
    font-weight: 500;
    transition: all var(--transition-fast);
    display: flex;
    align-items: center;
    gap: 8px;
}

.header.scrolled .nav-link {
    color: var(--text-dark);
}

.nav-link:hover {
    background: rgba(255, 255, 255, 0.1);
    color: var(--white);
}

.header.scrolled .nav-link:hover {
    background: var(--light-gray);
    color: var(--primary-color);
}

.nav-link.active {
    background: rgba(255, 255, 255, 0.15);
    font-weight: 600;
}

.header.scrolled .nav-link.active {
    background: var(--light-gray);
    color: var(--primary-color);
}

/* 验证按钮 */
.verify-btn {
    background: var(--accent-color);
    color: var(--white);
    padding: 8px 20px;
    border-radius: 6px;
    font-weight: 600;
    transition: all var(--transition-normal);
    display: flex;
    align-items: center;
    gap: 8px;
    font-size: 0.875rem;
}

.verify-btn:hover {
    background: var(--accent-light);
    transform: translateY(-2px);
    color: var(--white);
}

/* 移动端菜单按钮 */
.mobile-toggle {
    display: none;
    background: none;
    border: none;
    color: var(--white);
    font-size: 1.5rem;
    cursor: pointer;
    padding: 8px;
    border-radius: 4px;
    transition: all var(--transition-fast);
    z-index: 1001;
}

.header.scrolled .mobile-toggle {
    color: var(--text-dark);
}

.mobile-toggle:hover {
    background: rgba(255, 255, 255, 0.1);
}

.header.scrolled .mobile-toggle:hover {
    background: var(--light-gray);
}

/* ===== 全屏轮播 ===== */
.hero-slider {
    width: 100%;
    position: relative;
    height: 100vh;
    min-height: 700px;
    overflow: hidden;
    margin-bottom: 100px;
}

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

.slide {
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    opacity: 0;
    transition: opacity 0.8s ease;
    display: flex;
    align-items: center;
    justify-content: center;
}

.slide.active {
    opacity: 1;
    z-index: 1;
}

/* 幻灯片背景 */
.slide-1 {
    background: linear-gradient(rgba(0, 0, 0, 0.5), rgba(0, 0, 0, 0.5)),
                url('https://images.unsplash.com/photo-1559757175-0eb30cd8c063?ixlib=rb-4.0.3&auto=format&fit=crop&w=1920&q=80');
    background-size: cover;
    background-position: center;
    background-attachment: fixed;
}

.slide-2 {
    background: linear-gradient(rgba(0, 0, 0, 0.5), rgba(0, 0, 0, 0.5)),
                url('https://images.unsplash.com/photo-1559757148-5c350d0d3c56?ixlib=rb-4.0.3&auto=format&fit=crop&w=1920&q=80');
    background-size: cover;
    background-position: center;
    background-attachment: fixed;
}

.slide-3 {
    background: linear-gradient(rgba(0, 0, 0, 0.5), rgba(0, 0, 0, 0.5)),
                url('https://images.unsplash.com/photo-1582719508461-905c673771fd?ixlib=rb-4.0.3&auto=format&fit=crop&w=1920&q=80');
    background-size: cover;
    background-position: center;
    background-attachment: fixed;
}

.slide-content {
    text-align: center;
    color: var(--white);
    max-width: 900px;
    padding: 0 20px;
    z-index: 2;
    opacity: 0;
    transform: translateY(30px);
    transition: all 1s ease 0.3s;
}

.slide.active .slide-content {
    opacity: 1;
    transform: translateY(0);
}

.hero-slider h1 {
    font-size: 4rem;
    margin-bottom: 1.5rem;
    line-height: 1.1;
    color: var(--white);
    text-shadow: 0 2px 10px rgba(0, 0, 0, 0.3);
}

.hero-slider .lead {
    font-size: 1.5rem;
    margin-bottom: 2.5rem;
    color: rgba(255, 255, 255, 0.9);
    text-shadow: 0 1px 5px rgba(0, 0, 0, 0.2);
}

.hero-buttons {
    display: flex;
    gap: 20px;
    justify-content: center;
}

/* 轮播导航箭头 */
.slider-nav {
    position: absolute;
    top: 50%;
    transform: translateY(-50%);
    width: 100%;
    display: flex;
    justify-content: space-between;
    z-index: 3;
    padding: 0 40px;
    opacity: 0;
    transition: opacity var(--transition-normal);
}

.hero-slider:hover .slider-nav {
    opacity: 1;
}

.slider-arrow {
    background: rgba(255, 255, 255, 0.1);
    color: var(--white);
    width: 50px;
    height: 50px;
    border-radius: 50%;
    border: 2px solid rgba(255, 255, 255, 0.2);
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 1.25rem;
    cursor: pointer;
    transition: all var(--transition-normal);
    backdrop-filter: blur(10px);
}

.slider-arrow:hover {
    background: rgba(255, 255, 255, 0.2);
    transform: scale(1.1);
    border-color: rgba(255, 255, 255, 0.3);
}

/* 轮播指示器 */
.slider-dots {
    position: absolute;
    bottom: 30px;
    left: 0;
    width: 100%;
    display: flex;
    justify-content: center;
    gap: 12px;
    z-index: 3;
}

.slider-dot {
    width: 10px;
    height: 10px;
    border-radius: 50%;
    background: rgba(255, 255, 255, 0.3);
    cursor: pointer;
    transition: all var(--transition-normal);
}

.slider-dot.active {
    background: var(--white);
    transform: scale(1.2);
}

.slider-dot:hover {
    background: rgba(255, 255, 255, 0.5);
}

/* ===== 核心优势 - 一行全宽显示 ===== */
.advantages {
    background: var(--white);
    width: 100%;
}

.advantages-content {
    width: 100%;
}

.advantages-row {
    display: flex;
    justify-content: space-between;
    align-items: flex-start;
    gap: 20px;
    width: 100%;
}

.advantage-item {
    flex: 1;
    text-align: center;
    padding: 0 10px;
    min-width: 0;
}

.advantage-icon {
    width: 80px;
    height: 80px;
    background: var(--gradient-primary);
    border-radius: 15px;
    display: flex;
    align-items: center;
    justify-content: center;
    margin: 0 auto 25px;
    color: var(--white);
    font-size: 2.5rem;
    transition: all var(--transition-normal);
}

.advantage-item:hover .advantage-icon {
    transform: rotate(10deg) scale(1.1);
    box-shadow: 0 8px 20px rgba(0, 86, 214, 0.3);
}

.advantage-item h3 {
    font-size: 1.5rem;
    margin-bottom: 15px;
    color: var(--text-dark);
}

.advantage-item p {
    font-size: 1.125rem;
    color: var(--dark-gray);
    margin-bottom: 0;
    line-height: 1.6;
}

/* ===== 特色产品 - 全宽3列 ===== */
.products {
    background: var(--light-gray);
    width: 100%;
}

.products-content {
    width: 100%;
}

.products-grid {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: 40px;
    width: 100%;
}

.product-card {
    background: var(--white);
    border-radius: 12px;
    overflow: hidden;
    box-shadow: var(--shadow-lg);
    transition: all var(--transition-normal);
    width: 100%;
}

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

.product-image {
    position: relative;
    height: 400px; /* 加大图片高度 */
    overflow: hidden;
}

.product-image img {
    width: 100%;
    height: 100%;
    object-fit: cover;
    transition: transform 0.6s ease;
}

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

.product-badge {
    position: absolute;
    top: 20px;
    right: 20px;
    background: var(--accent-color);
    color: var(--white);
    padding: 8px 16px;
    border-radius: 4px;
    font-size: 0.875rem;
    font-weight: 600;
    text-transform: uppercase;
    letter-spacing: 0.5px;
}

.product-content {
    padding: 40px 30px;
}

.product-category {
    color: var(--primary-color);
    font-size: 0.875rem;
    font-weight: 600;
    text-transform: uppercase;
    letter-spacing: 1px;
    margin-bottom: 15px;
    display: block;
}

.product-card h3 {
    font-size: 1.5rem;
    margin-bottom: 15px;
    line-height: 1.4;
}

.product-card p {
    font-size: 1.125rem;
    margin-bottom: 25px;
    color: var(--dark-gray);
    line-height: 1.6;
}

/* ===== 团队 - 全宽4列 ===== */
.team {
    background: var(--white);
    width: 100%;
}

.team-content {
    width: 100%;
}

.team-grid {
    display: grid;
    grid-template-columns: repeat(4, 1fr);
    gap: 40px;
    width: 100%;
}

.team-card {
    background: var(--white);
    border-radius: 12px;
    overflow: hidden;
    box-shadow: var(--shadow-lg);
    transition: all var(--transition-normal);
    text-align: center;
    width: 100%;
}

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

.team-image {
    height: 450px; /* 加大团队图片高度 */
    overflow: hidden;
}

.team-image img {
    width: 100%;
    height: 100%;
    object-fit: cover;
    transition: transform 0.6s ease;
}

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

.team-info {
    padding: 40px 30px;
}

.team-name {
    font-size: 1.5rem;
    margin-bottom: 10px;
    color: var(--text-dark);
}

.team-role {
    color: var(--primary-color);
    font-size: 0.875rem;
    font-weight: 600;
    text-transform: uppercase;
    letter-spacing: 1px;
    margin-bottom: 20px;
    display: block;
}

.team-card p {
    font-size: 1.125rem;
    color: var(--dark-gray);
    margin-bottom: 0;
    line-height: 1.6;
}

/* ===== 页脚 - 4列布局，高度优化 ===== */
.footer {
    background: #1A1D29;
    color: var(--white);
    width: 100%;
    padding: 60px 40px 20px; /* 减少上边距和下边距 */
}

.footer-content {
    width: 100%;
}

.footer-grid {
    display: grid;
    grid-template-columns: repeat(4, 1fr); /* 保持4列 */
    gap: 30px; /* 减少列间距 */
    width: 100%;
    margin-bottom: 30px; /* 减少底部间距 */
}

.footer-column h3 {
    color: var(--white);
    font-size: 1.125rem;
    margin-bottom: 15px; /* 减少标题下边距 */
    position: relative;
    padding-bottom: 8px; /* 减少下划线距离 */
}

.footer-column h3::after {
    content: '';
    position: absolute;
    bottom: 0;
    left: 0;
    width: 40px;
    height: 3px;
    background: var(--accent-color);
    border-radius: 2px;
}

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

.footer-links li {
    margin-bottom: 8px; /* 减少链接间距 */
}

.footer-links a {
    color: #A0A0A0;
    transition: color var(--transition-fast);
    display: flex;
    align-items: center;
    gap: 8px;
    font-weight: 400;
    font-size: 0.875rem; /* 减小字体 */
}

.footer-links a:hover {
    color: var(--white);
    padding-left: 3px; /* 减少悬停效果 */
}

.footer-contact {
    color: #A0A0A0;
    margin-bottom: 8px; /* 减少联系信息间距 */
    display: flex;
    align-items: center;
    gap: 8px; /* 减少图标间距 */
    font-size: 0.875rem; /* 减小字体 */
}

.footer-contact i {
    color: var(--accent-color);
    width: 16px; /* 减小图标宽度 */
    font-size: 0.875rem; /* 减小图标大小 */
}

.social-links {
    display: flex;
    gap: 8px; /* 减少社交图标间距 */
    margin-top: 12px; /* 减少上边距 */
}

.social-link {
    width: 32px; /* 减小社交图标大小 */
    height: 32px;
    background: rgba(255, 255, 255, 0.1);
    border-radius: 6px;
    display: flex;
    align-items: center;
    justify-content: center;
    color: var(--white);
    font-size: 0.875rem; /* 减小图标大小 */
    transition: all var(--transition-normal);
}

.social-link:hover {
    background: var(--primary-color);
    transform: translateY(-2px);
}

/* 页脚底部 */
.footer-bottom {
    text-align: center;
    padding-top: 20px; /* 减少上边距 */
    border-top: 1px solid rgba(255, 255, 255, 0.1);
    color: #94A3B8;
    font-size: 0.75rem; /* 减小字体 */
    width: 100%;
    line-height: 1.4;
}

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

/* ===== 响应式设计 ===== */
@media (max-width: 1200px) {
    .section-full {
        padding: 100px 30px;
    }
    
    h1 {
        font-size: 3rem;
    }
    
    h2 {
        font-size: 2.25rem;
    }
    
    .hero-slider h1 {
        font-size: 3.5rem;
    }
    
    .hero-slider .lead {
        font-size: 1.25rem;
    }
    
    .advantages-row {
        gap: 15px;
    }
    
    .advantage-item h3 {
        font-size: 1.25rem;
    }
    
    .advantage-item p {
        font-size: 1rem;
    }
    
    .product-image {
        height: 350px;
    }
    
    .team-image {
        height: 400px;
    }
    
    .team-grid {
        gap: 30px;
    }
    
    .footer {
        padding: 50px 30px 20px;
    }
    
    .footer-grid {
        gap: 25px;
    }
}

@media (max-width: 992px) {
    .section-full {
        padding: 80px 20px;
    }
    
    .header-container {
        padding: 0 20px;
    }
    
    .mobile-toggle {
        display: block;
    }
    
    .nav {
        position: fixed;
        top: 0;
        right: -100%;
        width: 300px;
        height: 100vh;
        background: var(--white);
        flex-direction: column;
        align-items: stretch;
        padding: 100px 30px 30px;
        transition: right var(--transition-normal);
        box-shadow: var(--shadow-xl);
    }
    
    .nav.active {
        right: 0;
    }
    
    .nav-menu {
        flex-direction: column;
        gap: 5px;
    }
    
    .nav-link {
        color: var(--text-dark);
        padding: 12px 20px;
    }
    
    .nav-link:hover {
        background: var(--light-gray);
        color: var(--primary-color);
    }
    
    .nav-link.active {
        background: var(--light-gray);
        color: var(--primary-color);
    }
    
    .header.scrolled .nav {
        background: var(--white);
    }
    
    .verify-btn {
        margin-top: 20px;
        justify-content: center;
    }
    
    .hero-slider h1 {
        font-size: 2.75rem;
    }
    
    .hero-slider .lead {
        font-size: 1.125rem;
    }
    
    .advantages-row {
        flex-wrap: wrap;
        justify-content: center;
    }
    
    .advantage-item {
        flex: 0 0 calc(50% - 20px);
        margin-bottom: 40px;
    }
    
    .products-grid {
        grid-template-columns: repeat(2, 1fr);
    }
    
    .team-grid {
        grid-template-columns: repeat(2, 1fr);
    }
    
    .footer {
        padding: 40px 20px 20px;
    }
    
    .footer-grid {
        grid-template-columns: repeat(2, 1fr);
        gap: 30px;
    }
}

@media (max-width: 768px) {
    .section-full {
        padding: 60px 15px;
    }
    
    .header-container {
        padding: 0 15px;
    }
    
    h1 {
        font-size: 2.5rem;
    }
    
    h2 {
        font-size: 2rem;
    }
    
    h3 {
        font-size: 1.5rem;
    }
    
    .hero-slider {
        min-height: 600px;
    }
    
    .hero-slider h1 {
        font-size: 2.5rem;
    }
    
    .hero-slider .lead {
        font-size: 1.0625rem;
    }
    
    .hero-buttons {
        flex-direction: column;
        align-items: center;
    }
    
    .advantages-row {
        flex-direction: column;
        align-items: center;
    }
    
    .advantage-item {
        flex: 0 0 100%;
        max-width: 100%;
        margin-bottom: 40px;
    }
    
    .advantage-icon {
        width: 70px;
        height: 70px;
        font-size: 2rem;
    }
    
    .products-grid {
        grid-template-columns: 1fr;
        gap: 30px;
    }
    
    .product-image {
        height: 350px;
    }
    
    .team-grid {
        grid-template-columns: 1fr;
    }
    
    .team-image {
        height: 400px;
    }
    
    .footer {
        padding: 30px 15px 15px;
    }
    
    .footer-grid {
        grid-template-columns: 1fr;
        gap: 25px;
    }
    
    .footer-column h3 {
        font-size: 1rem;
    }
    
    .footer-links a {
        font-size: 0.8125rem;
    }
    
    .footer-contact {
        font-size: 0.8125rem;
    }
}

@media (max-width: 576px) {
    .section-full {
        padding: 60px 10px;
    }
    
    .header-container {
        padding: 0 10px;
    }
    
    h1 {
        font-size: 2rem;
    }
    
    h2 {
        font-size: 1.75rem;
    }
    
    .hero-slider {
        min-height: 500px;
    }
    
    .hero-slider h1 {
        font-size: 2rem;
    }
    
    .slider-arrow {
        width: 40px;
        height: 40px;
        font-size: 1rem;
    }
    
    .slider-nav {
        padding: 0 10px;
    }
    
    .btn {
        width: 100%;
        justify-content: center;
    }
    
    .product-image {
        height: 300px;
    }
    
    .team-image {
        height: 350px;
    }
    
    .footer {
        padding: 25px 10px 15px;
    }
    
    .footer-grid {
        gap: 20px;
    }
    
    .footer-bottom {
        font-size: 0.6875rem;
        padding-top: 15px;
    }
}












/* ===== 重置与基础样式 ===== */
:root {
    /* 主色调板 */
    --primary-color: #0056D6;        /* 专业蓝 */
    --primary-light: #3A7BFF;        /* 浅蓝 */
    --primary-dark: #003B8B;         /* 深蓝 */
    
    /* 强调色 */
    --accent-color: #FF6B35;         /* 橙色强调色 */
    --accent-light: #FF9E6D;         /* 浅橙色 */
    
    /* 中性色 */
    --white: #FFFFFF;
    --light-gray: #F8F9FA;
    --medium-gray: #E9ECEF;
    --dark-gray: #6C757D;
    --text-dark: #212529;
    
    /* 功能色 */
    --success: #28A745;
    --warning: #FFC107;
    --error: #DC3545;
    
    /* 渐变 */
    --gradient-primary: linear-gradient(135deg, #0056D6, #3A7BFF);
    --gradient-accent: linear-gradient(135deg, #FF6B35, #FF9E6D);
     --gradientprimary: linear-gradient(135deg, #082a5d, #3A7BFF);
    
    /* 阴影 */
    --shadow-sm: 0 2px 4px rgba(0, 0, 0, 0.05);
    --shadow-md: 0 4px 8px rgba(0, 0, 0, 0.08);
    --shadow-lg: 0 8px 16px rgba(0, 0, 0, 0.1);
    --shadow-xl: 0 12px 24px rgba(0, 0, 0, 0.12);
    
    /* 过渡 */
    --transition-fast: 0.2s ease;
    --transition-normal: 0.3s ease;
    --transition-slow: 0.5s ease;
}

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

html {
    scroll-behavior: smooth;
    scroll-padding-top: 80px;
}

body {
    font-family: 'Inter', -apple-system, BlinkMacSystemFont, 'Segoe UI', sans-serif;
    line-height: 1.6;
    color: var(--text-dark);
    background-color: var(--white);
    overflow-x: hidden;
    width: 100%;
}

/* ===== 全宽度容器 ===== */
.container-fluid {
    width: 100%;
    padding: 0 40px;
}

/* 响应式内边距 */
@media (max-width: 1200px) {
    .container-fluid {
        padding: 0 30px;
    }
}

@media (max-width: 768px) {
    .container-fluid {
        padding: 0 20px;
    }
}

@media (max-width: 576px) {
    .container-fluid {
        padding: 0 15px;
    }
}

/* ===== 通用区块样式 ===== */
.section-block {
    width: 100%;
    padding: 80px 0;
}

.section-block-sm {
    width: 100%;
    padding: 60px 0;
}

/* ===== 通用标题样式 ===== */
.section-title {
    width: 100%;
    text-align: center;
    margin-bottom: 40px;
}

.section-title h2 {
    font-size: 2.5rem;
    font-weight: 700;
    color: var(--text-dark);
    margin-bottom: 15px;
    position: relative;
    display: inline-block;
}

.section-title h2::after {
    content: '';
    position: absolute;
    bottom: -10px;
    left: 0;
    width: 60px;
    height: 4px;
    background: var(--gradient-primary);
    border-radius: 2px;
}

.section-title .section-subtitle {
    font-size: 1.125rem;
    color: var(--dark-gray);
    max-width: 600px;
    margin: 0 auto;
    line-height: 1.6;
}

/* ===== 通用卡片样式 ===== */
.card {
    background: var(--white);
    border-radius: 8px;
    overflow: hidden;
    box-shadow: var(--shadow-lg);
    transition: all var(--transition-normal);
    width: 100%;
    border: 1px solid var(--medium-gray);
}

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

.card-image {
    width: 100%;
    height: 200px;
    overflow: hidden;
}

.card-image img {
    width: 100%;
    height: 100%;
    object-fit: cover;
    transition: transform 0.6s ease;
}

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

.card-content {
    padding: 20px;
}

/* ===== 通用标签样式 ===== */
.tag {
    display: inline-block;
    background: var(--light-gray);
    color: var(--primary-color);
    padding: 4px 12px;
    border-radius: 4px;
    font-size: 0.75rem;
    font-weight: 600;
    text-transform: uppercase;
    margin-right: 8px;
    margin-bottom: 8px;
}

.badge {
    display: inline-block;
    background: var(--accent-color);
    color: var(--white);
    padding: 4px 8px;
    border-radius: 4px;
    font-size: 0.75rem;
    font-weight: 600;
    text-transform: uppercase;
}

 
 
 
 
/* 移动端菜单按钮 */
.mobile-toggle {
    display: none;
    background: none;
    border: none;
    color: var(--white);
    font-size: 1.25rem;
    cursor: pointer;
    padding: 8px;
    border-radius: 4px;
    transition: all var(--transition-fast);
    z-index: 1001;
}

.header.scrolled .mobile-toggle {
    color: var(--text-dark);
}
 
/* ===== 内容页面通用样式 ===== */
.page-header {
    width: 100%;
    background: var(--gradientprimary);
    color: var(--white);
    padding: 120px 0 60px;
    text-align: center;
}

.page-header h1 {
    font-size: 2.5rem;
    font-weight: 700;
    margin-bottom: 15px;
    color: var(--white);
}

.page-header .lead {
    font-size: 1.125rem;
    color: rgba(255, 255, 255, 0.9);
    max-width: 600px;
    margin: 0 auto;
    line-height: 1.6;
}

.page-content {
    width: 100%;
    padding: 60px 0;
    background: var(--white);
}

.content-container {
    width: 100%;
    /*max-width: 800px;*/
    margin: 0 auto;
    padding: 0 100px;
}

.content-container h2 {
    font-size: 1.75rem;
    font-weight: 600;
    margin: 30px 0 15px;
    color: var(--text-dark);
}

.content-container h3 {
    font-size: 1.375rem;
    font-weight: 600;
    margin: 25px 0 10px;
    color: var(--text-dark);
}

.content-container p {
    font-size: 1rem;
    line-height: 1.7;
    margin-bottom: 20px;
    color: var(--text-dark);
}

.content-container ul,
.content-container ol {
    margin: 20px 0 20px 20px;
    padding-left: 20px;
}

.content-container li {
    font-size: 1rem;
    line-height: 1.7;
    margin-bottom: 8px;
    color: var(--text-dark);
}

.content-container a {
    color: var(--primary-color);
    text-decoration: none;
    transition: color var(--transition-fast);
}

.content-container a:hover {
    color: var(--primary-dark);
    text-decoration: underline;
}

/* ===== 响应式设计 ===== */
@media (max-width: 992px) {
    .header-content {
        padding: 0 20px;
    }
    
    .mobile-toggle {
        display: block;
    }
    
    .nav {
        position: fixed;
        top: 0;
        right: -100%;
        width: 280px;
        height: 100vh;
        background: var(--white);
        flex-direction: column;
        align-items: stretch;
        padding: 100px 20px 20px;
        transition: right var(--transition-normal);
        box-shadow: var(--shadow-xl);
    }
    
    .nav.active {
        right: 0;
    }
    
    .nav-menu {
        flex-direction: column;
        gap: 5px;
    }
    
    .nav-link {
        color: var(--text-dark);
        padding: 12px 16px;
    }
    
    .nav-link:hover {
        background: var(--light-gray);
        color: var(--primary-color);
    }
    
    .nav-link.active {
        background: var(--light-gray);
        color: var(--primary-color);
    }
    
    .header.scrolled .nav {
        background: var(--white);
    }
    
    .footer-grid {
        grid-template-columns: repeat(2, 1fr);
    }
    
    .footer-content {
        padding: 0 20px;
    }
}

@media (max-width: 768px) {
    .header-content {
        padding: 0 15px;
    }
    
    .page-header {
        padding: 100px 0 40px;
    }
    
    .page-header h1 {
        font-size: 2rem;
    }
    
    .section-title h2 {
        font-size: 2rem;
    }
    
    .footer-grid {
        grid-template-columns: 1fr;
    }
    
    .footer-content {
        padding: 0 15px;
    }
}

@media (max-width: 576px) {
    .header-content {
        padding: 0 10px;
    }
    
    .page-header {
        padding: 80px 0 30px;
    }
    
    .page-header h1 {
        font-size: 1.75rem;
    }
    
    .section-title h2 {
        font-size: 1.75rem;
    }
    
    .footer-content {
        padding: 0 10px;
    }
}