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

:root {
--primary: #2563eb;
--primary-dark: #1d4ed8;
--text: #1f2937;
--text-light: #6b7280;
--bg: #f9fafb;
--white: #ffffff;
--shadow: 0 4px 24px rgba(0, 0, 0, 0.06);
}

body {
font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", "PingFang SC", "Microsoft YaHei", sans-serif;
color: var(--text);
background: var(--bg);
line-height: 1.6;
min-height: 100vh;
display: flex;
flex-direction: column;
}

/* 导航栏 */
.navbar {
background: var(--white);
box-shadow: var(--shadow);
display: flex;
align-items: center;
justify-content: space-between;
padding: 16px 48px;
position: sticky;
top: 0;
z-index: 100;
}

.nav-brand {
font-size: 20px;
font-weight: 700;
color: var(--primary);
}

.nav-links {
display: flex;
list-style: none;
gap: 8px;
}

.nav-links a {
text-decoration: none;
color: var(--text-light);
padding: 8px 16px;
border-radius: 8px;
font-weight: 500;
transition: all 0.2s;
}

.nav-links a:hover {
background: #eff6ff;
color: var(--primary);
}

.nav-links a.active {
background: var(--primary);
color: var(--white);
}

/* 首页 Hero */
main {
flex: 1;
}

.hero {
text-align: center;
padding: 100px 24px 80px;
background: linear-gradient(135deg, #eff6ff 0%, #ffffff 100%);
}

.hero h1 {
font-size: 48px;
font-weight: 800;
color: var(--text);
margin-bottom: 16px;
}

.hero .subtitle {
font-size: 20px;
color: var(--text-light);
margin-bottom: 32px;
}

.btn-primary {
display: inline-block;
background: var(--primary);
color: var(--white);
padding: 14px 32px;
border-radius: 10px;
text-decoration: none;
font-weight: 600;
font-size: 16px;
transition: all 0.2s;
border: none;
cursor: pointer;
}

.btn-primary:hover {
background: var(--primary-dark);
transform: translateY(-1px);
box-shadow: 0 4px 12px rgba(37, 99, 235, 0.3);
}

/* 特性卡片 */
.features {
display: grid;
grid-template-columns: repeat(auto-fit, minmax(220px, 1fr));
gap: 24px;
max-width: 1000px;
margin: 64px auto;
padding: 0 48px;
}

.feature-card {
background: var(--white);
padding: 32px 24px;
border-radius: 16px;
text-align: center;
box-shadow: var(--shadow);
transition: transform 0.2s;
}

.feature-card:hover {
transform: translateY(-4px);
}

.feature-icon {
font-size: 40px;
margin-bottom: 16px;
}

.feature-card h3 {
font-size: 18px;
margin-bottom: 8px;
}

.feature-card p {
color: var(--text-light);
font-size: 14px;
}

/* 页面通用 */
.page-main {
max-width: 960px;
margin: 0 auto;
padding: 48px 24px;
}

.page-header {
text-align: center;
margin-bottom: 48px;
}

.page-header h1 {
font-size: 36px;
font-weight: 800;
margin-bottom: 8px;
}

.page-header p {
font-size: 18px;
color: var(--text-light);
}

.content-block {
background: var(--white);
padding: 32px;
border-radius: 16px;
margin-bottom: 24px;
box-shadow: var(--shadow);
}

.content-block h2 {
font-size: 22px;
margin-bottom: 16px;
}

.content-block p {
color: var(--text-light);
font-size: 15px;
}

/* 统计 */
.stats {
display: flex;
gap: 32px;
flex-wrap: wrap;
}

.stat-item {
text-align: center;
flex: 1;
min-width: 120px;
}

.stat-number {
display: block;
font-size: 36px;
font-weight: 800;
color: var(--primary);
}

.stat-label {
font-size: 14px;
color: var(--text-light);
}

.values-list {
list-style: none;
padding: 0;
}

.values-list li {
padding: 12px 0;
border-bottom: 1px solid #f3f4f6;
font-size: 15px;
}

.values-list li:last-child {
border-bottom: none;
}

/* 服务网格 */
.services-grid {
display: grid;
grid-template-columns: repeat(auto-fit, minmax(280px, 1fr));
gap: 24px;
margin-bottom: 48px;
}

.service-card {
background: var(--white);
padding: 32px 24px;
border-radius: 16px;
box-shadow: var(--shadow);
transition: transform 0.2s;
}

.service-card:hover {
transform: translateY(-4px);
}

.service-icon {
font-size: 40px;
margin-bottom: 16px;
}

.service-card h3 {
font-size: 18px;
margin-bottom: 8px;
}

.service-card p {
color: var(--text-light);
font-size: 14px;
line-height 1.7;
}

/* 联系页面 */
.contact-container {
display: grid;
grid-template-columns: 1fr 1fr;
gap: 32px;
align-items: start;
}

.contact-info {
display: flex;
flex-direction: column;
gap: 24px;
}

.contact-item {
display: flex;
gap: 16px;
align-items: flex-start;
background: var(--white);
padding: 20px;
border-radius: 12px;
box-shadow: var(--shadow);
}

.contact-icon {
font-size: 28px;
}

.contact-item h3 {
font-size: 15px;
margin-bottom: 4px;
}

.contact-item p {
color: var(--text-light);
font-size: 14px;
}

.contact-form {
background: var(--white);
padding: 32px;
border-radius: 16px;
box-shadow: var(--shadow);
}

.contact-form h3 {
font-size: 20px;
margin-bottom: 24px;
}

.form-group {
margin-bottom: 16px;
}

.form-group label {
display: block;
font-size: 14px;
font-weight: 600;
margin-bottom: 6px;
color: var(--text);
}

.form-group input,
.form-group textarea {
width: 100%;
padding: 12px;
border: 1px solid #e5e7eb;
border-radius: 8px;
font-size: 15px;
font-family: inherit;
transition: border-color 0.2s;
}

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

/* 页脚 */
footer {
text-align: center;
padding: 24px;
color: var(--text-light);
font-size: 14px;
background: var(--white);
border-top: 1px solid #f3f4f6;
margin-top: auto;
}

footer .divider {
display: inline-block;
margin: 0 10px;
color: #d1d5db;
}

footer .icp-link {
color: var(--primary);
font-weight: 600;
text-decoration: none;
}

footer .icp-link:hover {
text-decoration: underline;
}

/* 响应式 */
@media (max-width: 768px) {
.navbar {
padding: 12px 16px;
flex-direction: column;
gap: 12px;
}

.nav-links a {
padding: 6px 12px;
font-size: 14px;
}

.hero h1 {
font-size: 32px;
}

.features {
padding: 0 16px;
}

.contact-container {
grid-template-columns: 1fr;
}
}