/* 科技蓝主题变量 */
:root {
    --primary-color: #1a56db;
    --primary-dark: #1e429f;
    --primary-light: #3f83f8;
    --secondary-color: #00dc82;
    --accent-color: #8b5cf6;
    --text-color: #1f2937;
    --text-light: #6b7280;
    --light-bg: #f8fafc;
    --white: #ffffff;
    --border-color: #e5e7eb;
    --border-radius: 12px;
    --shadow: 0 4px 6px rgba(0, 0, 0, 0.05);
    --shadow-lg: 0 10px 25px rgba(0, 0, 0, 0.1);
    --transition: all 0.3s ease;
    --desktop-width: 1200px;
    --tablet-width: 768px;
    --mobile-width: 480px;
}

/* 重置样式 */
* {
    box-sizing: border-box;
    margin: 0;
    padding: 0;
}

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

body {
    font-family: 'Helvetica Neue', Arial, 'PingFang SC', 'Microsoft YaHei', sans-serif;
    color: var(--text-color);
    line-height: 1.6;
    overflow-x: hidden;
    background-color: var(--white);
}

/* 容器样式 */
.container {
    max-width: var(--desktop-width);
    margin: 0 auto;
    padding: 0 20px;
}

/* 按钮样式 */
.cta-button {
    display: inline-block;
    background: linear-gradient(135deg, var(--primary-color), var(--primary-dark));
    color: var(--white);
    padding: 14px 32px;
    text-decoration: none;
    border-radius: var(--border-radius);
    font-weight: 600;
    transition: var(--transition);
    border: none;
    cursor: pointer;
    font-size: 1rem;
    text-align: center;
    box-shadow: var(--shadow);
    position: relative;
    overflow: hidden;
}

.cta-button::before {
    content: '';
    position: absolute;
    top: 0;
    left: -100%;
    width: 100%;
    height: 100%;
    background: linear-gradient(90deg, transparent, rgba(255,255,255,0.2), transparent);
    transition: left 0.5s;
}

.cta-button:hover::before {
    left: 100%;
}

.cta-button:hover {
    transform: translateY(-2px);
    box-shadow: var(--shadow-lg);
}

.cta-button.secondary {
    background: linear-gradient(135deg, var(--secondary-color), #00c271);
}

.cta-button.accent {
    background: linear-gradient(135deg, var(--accent-color), #7c3aed);
}

.secondary-button {
    display: inline-block;
    background-color: transparent;
    color: var(--primary-color);
    border: 2px solid var(--primary-color);
    padding: 12px 30px;
    text-decoration: none;
    border-radius: var(--border-radius);
    font-weight: 600;
    transition: var(--transition);
}

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

/* 导航栏样式 */
header {
    background: rgba(26, 86, 219, 0.95);
    color: var(--white);
    padding: 1rem 0;
    position: fixed;
    width: 100%;
    top: 0;
    z-index: 1000;
    transition: var(--transition);
    backdrop-filter: blur(10px);
    border-bottom: 1px solid rgba(255,255,255,0.1);
}

nav {
    max-width: var(--desktop-width);
    margin: 0 auto;
    display: flex;
    justify-content: space-between;
    align-items: center;
    padding: 0 20px;
}

.logo {
    font-size: 1.5rem;
    font-weight: bold;
    white-space: nowrap;
    background: linear-gradient(135deg, var(--white), #e0e7ff);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
}

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

nav a {
    color: var(--white);
    text-decoration: none;
    font-weight: 500;
    transition: var(--transition);
    font-size: 0.95rem;
    position: relative;
}

nav a::after {
    content: '';
    position: absolute;
    bottom: -5px;
    left: 0;
    width: 0;
    height: 2px;
    background: var(--secondary-color);
    transition: width 0.3s ease;
}

nav a:hover::after {
    width: 100%;
}

nav a:hover {
    color: var(--secondary-color);
}

/* 移动端菜单按钮 */
.mobile-menu-btn {
    display: none;
    background: none;
    border: none;
    color: var(--white);
    font-size: 1.5rem;
    cursor: pointer;
    padding: 5px;
}

/* 主要内容区域 */
main {
    margin-top: 80px;
}

section {
    padding: 5rem 0;
}

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

h1, h2, h3, h4, h5, h6 {
    font-weight: 700;
    line-height: 1.2;
    margin-bottom: 1rem;
}

h1 {
    font-size: clamp(2.5rem, 5vw, 3.5rem);
}

h2 {
    font-size: clamp(2rem, 4vw, 2.8rem);
    text-align: center;
    margin-bottom: 3rem;
    color: var(--primary-dark);
}

h3 {
    font-size: 1.5rem;
    color: var(--primary-color);
}

/* 文本样式 */
.text-center {
    text-align: center;
}

.text-lead {
    font-size: 1.25rem;
    color: var(--text-light);
    margin-bottom: 2rem;
}

/* 网格布局 */
.grid {
    display: grid;
    gap: 2rem;
}

.grid-2 {
    grid-template-columns: repeat(auto-fit, minmax(400px, 1fr));
}

.grid-3 {
    grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
}

.grid-4 {
    grid-template-columns: repeat(auto-fit, minmax(250px, 1fr));
}

/* 卡片样式 */
.card {
    background: var(--white);
    border-radius: var(--border-radius);
    padding: 2rem;
    box-shadow: var(--shadow);
    transition: var(--transition);
    border: 1px solid var(--border-color);
}

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

.card-feature {
    text-align: center;
    padding: 2.5rem 2rem;
}

.card-feature .icon {
    font-size: 3rem;
    margin-bottom: 1.5rem;
    display: block;
}

/* 徽章样式 */
.badge {
    display: inline-block;
    padding: 8px 20px;
    border-radius: 20px;
    font-weight: 600;
    font-size: 0.9rem;
    margin-bottom: 1rem;
}

.badge-primary {
    background: linear-gradient(135deg, var(--primary-color), var(--primary-dark));
    color: var(--white);
}

.badge-secondary {
    background: linear-gradient(135deg, var(--secondary-color), #00c271);
    color: var(--white);
}

.badge-accent {
    background: linear-gradient(135deg, var(--accent-color), #7c3aed);
    color: var(--white);
}

/* 英雄区域 */
.hero {
    background: linear-gradient(135deg, var(--light-bg) 0%, #e0e7ff 100%);
    padding: 8rem 0 4rem;
    text-align: center;
    position: relative;
    overflow: hidden;
}

.hero-content {
    position: relative;
    z-index: 1;
    /*max-width: 900px;*/
    width:1200px !important;
    margin: 0 auto;
}

.hero h1 {
    background: linear-gradient(135deg, var(--primary-dark), var(--accent-color));
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
    margin-bottom: 1.5rem;
}

/* 统计网格 */
.stats-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(200px, 1fr));
    gap: 2rem;
    margin: 3rem 0;
    text-align: center;
}

.stat-item {
    padding: 1.5rem;
}

.stat-number {
    font-size: 2.5rem;
    font-weight: 700;
    color: var(--primary-color);
    display: block;
    line-height: 1;
    margin-bottom: 0.5rem;
}

.stat-label {
    color: var(--text-light);
    font-size: 0.9rem;
}

/* 页脚样式 */
footer {
    background: linear-gradient(135deg, var(--primary-dark), var(--primary-color));
    color: var(--white);
    padding: 3rem 0;
    text-align: center;
}

.footer-content {
    max-width: var(--desktop-width);
    margin: 0 auto;
    padding: 0 20px;
}

.footer-links {
    display: flex;
    justify-content: center;
    gap: 2rem;
    margin-top: 1rem;
    flex-wrap: wrap;
}

.footer-links a {
    color: var(--white);
    text-decoration: none;
    font-size: 0.9rem;
    opacity: 0.8;
    transition: var(--transition);
}

.footer-links a:hover {
    opacity: 1;
    color: var(--secondary-color);
}

/* 面包屑导航 */
.breadcrumb {
    max-width: var(--desktop-width);
    margin: 100px auto 0;
    padding: 1rem 20px;
    font-size: 0.9rem;
    color: var(--text-light);
}

.breadcrumb a {
    color: var(--primary-color);
    text-decoration: none;
}

.breadcrumb a:hover {
    text-decoration: underline;
}

/* 工具类 */
.mb-1 { margin-bottom: 1rem; }
.mb-2 { margin-bottom: 2rem; }
.mb-3 { margin-bottom: 3rem; }
.mt-1 { margin-top: 1rem; }
.mt-2 { margin-top: 2rem; }
.mt-3 { margin-top: 3rem; }

.text-primary { color: var(--primary-color); }
.text-secondary { color: var(--secondary-color); }
.text-accent { color: var(--accent-color); }

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