:root {
--primary: #4e89e5;
--secondary: #6bc9c0;
--light: #f8f9fa;
--text: #333;
--text-light: #666;
--accent: #ff7e5f;
--transition: all 0.3s ease;
}

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

body {
font-family: 'Segoe UI', 'Microsoft YaHei', sans-serif;
line-height: 1.6;
color: var(--text);
background: linear-gradient(135deg, #f5f7fa 0%, #e4e7f1 100%);
min-height: 100vh;
display: flex;
flex-direction: column;
}

.container {
width: 100%;
max-width: 1200px;
margin: 0 auto;
padding: 0 20px;
}

/* 头部样式 */
header {
background: rgba(255, 255, 255, 0.9);
box-shadow: 0 2px 15px rgba(0, 0, 0, 0.05);
position: sticky;
top: 0;
z-index: 100;
backdrop-filter: blur(10px);
}

.header-content {
display: flex;
justify-content: space-between;
align-items: center;
padding: 20px 0;
}

.logo {
font-size: 24px;
font-weight: 700;
color: var(--primary);
text-decoration: none;
display: flex;
align-items: center;
}

.logo-icon {
margin-right: 10px;
font-size: 28px;
}

nav ul {
display: flex;
list-style: none;
}

nav li {
margin-left: 30px;
}

nav a {
text-decoration: none;
color: var(--text);
font-weight: 500;
position: relative;
padding: 5px 0;
transition: var(--transition);
}

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

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

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

/* 主体内容 */
.hero {
padding: 80px 0;
text-align: center;
position: relative;
overflow: hidden;
}

.hero::before {
content: '';
position: absolute;
top: -100px;
right: -100px;
width: 300px;
height: 300px;
border-radius: 50%;
background: linear-gradient(135deg, rgba(110, 203, 226, 0.15) 0%, rgba(78, 137, 229, 0.15) 100%);
z-index: -1;
}

.hero::after {
content: '';
position: absolute;
bottom: -50px;
left: -50px;
width: 200px;
height: 200px;
border-radius: 50%;
background: linear-gradient(135deg, rgba(107, 201, 192, 0.15) 0%, rgba(255, 126, 95, 0.15) 100%);
z-index: -1;
}

.feature-icon {
font-size: 60px;
color: var(--primary);
margin-bottom: 20px;
transition: var(--transition);
}

.hero:hover .feature-icon {
transform: translateY(-10px) rotate(5deg);
}

.hero h1 {
font-size: 2.8rem;
margin-bottom: 20px;
color: var(--text);
line-height: 1.2;
}

.hero p {
font-size: 1.2rem;
max-width: 700px;
margin: 0 auto 40px;
color: var(--text-light);
}

/* 特性部分 */
.features {
padding: 80px 0;
background: rgba(255, 255, 255, 0.7);
backdrop-filter: blur(5px);
}

.section-title {
text-align: center;
font-size: 2rem;
margin-bottom: 60px;
position: relative;
}

.section-title::after {
content: '';
position: absolute;
bottom: -15px;
left: 50%;
transform: translateX(-50%);
width: 60px;
height: 3px;
background: var(--primary);
}

.features-grid {
display: grid;
grid-template-columns: repeat(auto-fit, minmax(280px, 1fr));
gap: 40px;
}

.feature-card {
background: white;
border-radius: 12px;
padding: 30px;
box-shadow: 0 5px 20px rgba(0, 0, 0, 0.05);
transition: var(--transition);
text-align: center;
}

.feature-card:hover {
transform: translateY(-10px);
box-shadow: 0 15px 30px rgba(0, 0, 0, 0.1);
}

.card-icon {
font-size: 40px;
margin-bottom: 20px;
color: var(--primary);
}

.feature-card h3 {
font-size: 1.4rem;
margin-bottom: 15px;
}

/* 底部备案 */
footer {
background: rgba(255, 255, 255, 0.9);
padding: 20px 0;
margin-top: auto;
border-top: 1px solid rgba(0, 0, 0, 0.05);
font-size: 0.9rem;
}

.footer-content {
display: flex;
flex-direction: column;
align-items: center;
text-align: center;
}

.icp {
color: var(--text-light);
font-size: 0.85rem;
margin-top: 5px;
}

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

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

/* 响应式设计 */
@media (max-width: 768px) {
.header-content {
flex-direction: column;
}

nav ul {
margin-top: 20px;
}

nav li {
margin: 0 10px;
}

.hero {
padding: 50px 0;
}

.hero h1 {
font-size: 2rem;
}
}