/* 余宝数熵官网样式 */
:root {
    --primary: #0066FF;
    --secondary: #00CC66;
    --dark: #1a1a2e;
    --light: #f8f9fa;
    --text: #333;
    --text-light: #666;
}

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

body {
    font-family: 'Microsoft YaHei', 'PingFang SC', sans-serif;
    color: var(--text);
    line-height: 1.6;
}

/* 导航 */
header {
    background: white;
    box-shadow: 0 2px 10px rgba(0,0,0,0.1);
    position: fixed;
    width: 100%;
    top: 0;
    z-index: 1000;
}

.nav-container {
    max-width: 1200px;
    margin: 0 auto;
    display: flex;
    justify-content: space-between;
    align-items: center;
    padding: 15px 20px;
}

.logo {
    display: flex;
    align-items: center;
    font-size: 24px;
    font-weight: bold;
    color: var(--primary);
}

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

.nav-links {
    display: flex;
    gap: 30px;
    list-style: none;
}

.nav-links a {
    text-decoration: none;
    color: var(--text);
    font-weight: 500;
    transition: color 0.3s;
}

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

.nav-buttons {
    display: flex;
    gap: 10px;
}

.btn {
    padding: 10px 24px;
    border-radius: 25px;
    text-decoration: none;
    font-weight: 500;
    transition: all 0.3s;
    cursor: pointer;
    border: none;
    font-size: 14px;
}

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

.btn-primary:hover {
    background: #0052cc;
    transform: translateY(-2px);
}

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

.btn-secondary:hover {
    background: #00aa55;
    transform: translateY(-2px);
}

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

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

/* 英雄区 */
.hero {
    padding: 160px 20px 100px;
    background: linear-gradient(135deg, var(--dark) 0%, #16213e 100%);
    color: white;
    text-align: center;
}

.hero-content {
    max-width: 900px;
    margin: 0 auto;
}

.hero h1 {
    font-size: 48px;
    margin-bottom: 20px;
    line-height: 1.2;
}

.hero h1 .highlight {
    color: var(--secondary);
}

.hero p {
    font-size: 20px;
    margin-bottom: 40px;
    opacity: 0.9;
}

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

.hero .btn {
    padding: 15px 40px;
    font-size: 16px;
}

/* 数据看板 */
.stats {
    display: flex;
    justify-content: center;
    gap: 60px;
    padding: 50px 20px;
    background: var(--light);
    flex-wrap: wrap;
}

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

.stat-item h3 {
    font-size: 42px;
    color: var(--primary);
    font-weight: bold;
}

.stat-item p {
    color: var(--text-light);
    font-size: 16px;
}

/* 区块 */
.section {
    padding: 80px 20px;
}

.section-title {
    text-align: center;
    margin-bottom: 50px;
}

.section-title h2 {
    font-size: 36px;
    margin-bottom: 15px;
    color: var(--dark);
}

.section-title p {
    font-size: 18px;
    color: var(--text-light);
    max-width: 600px;
    margin: 0 auto;
}

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

/* 卡片网格 */
.card-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
    gap: 30px;
    max-width: 1200px;
    margin: 0 auto;
}

.card {
    background: white;
    padding: 40px 30px;
    border-radius: 15px;
    box-shadow: 0 5px 20px rgba(0,0,0,0.08);
    transition: all 0.3s;
}

.card:hover {
    transform: translateY(-5px);
    box-shadow: 0 10px 30px rgba(0,0,0,0.12);
}

.card-icon {
    width: 60px;
    height: 60px;
    background: linear-gradient(135deg, var(--primary), var(--secondary));
    border-radius: 15px;
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 28px;
    margin-bottom: 20px;
}

.card h3 {
    font-size: 22px;
    margin-bottom: 15px;
    color: var(--dark);
}

.card p {
    color: var(--text-light);
    line-height: 1.8;
}

/* 流程 */
.steps {
    display: flex;
    justify-content: center;
    gap: 30px;
    flex-wrap: wrap;
    max-width: 1100px;
    margin: 0 auto;
}

.step {
    text-align: center;
    flex: 1;
    min-width: 220px;
    max-width: 250px;
}

.step-num {
    width: 60px;
    height: 60px;
    background: linear-gradient(135deg, var(--primary), var(--secondary));
    color: white;
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 24px;
    font-weight: bold;
    margin: 0 auto 20px;
}

.step h3 {
    font-size: 20px;
    margin-bottom: 10px;
}

.step p {
    color: var(--text-light);
}

/* 对比表格 */
.compare-table {
    max-width: 900px;
    margin: 0 auto;
    background: white;
    border-radius: 15px;
    overflow: hidden;
    box-shadow: 0 5px 20px rgba(0,0,0,0.08);
}

.compare-table table {
    width: 100%;
    border-collapse: collapse;
}

.compare-table th,
.compare-table td {
    padding: 20px;
    text-align: left;
    border-bottom: 1px solid #eee;
}

.compare-table th {
    background: var(--primary);
    color: white;
    font-weight: 500;
}

.compare-table tr:last-child td {
    border-bottom: none;
}

.compare-table .highlight-row {
    background: #f0f7ff;
}

/* CTA区块 */
.cta-section {
    background: linear-gradient(135deg, var(--primary), var(--secondary));
    padding: 80px 20px;
    text-align: center;
    color: white;
}

.cta-section h2 {
    font-size: 36px;
    margin-bottom: 20px;
}

.cta-section p {
    font-size: 20px;
    margin-bottom: 30px;
    opacity: 0.95;
}

/* 页脚 */
footer {
    background: var(--dark);
    color: white;
    padding: 60px 20px 30px;
}

.footer-content {
    max-width: 1200px;
    margin: 0 auto;
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(200px, 1fr));
    gap: 40px;
}

.footer-col h4 {
    font-size: 18px;
    margin-bottom: 20px;
    color: var(--secondary);
}

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

.footer-col li {
    margin-bottom: 10px;
}

.footer-col a {
    color: #aaa;
    text-decoration: none;
    transition: color 0.3s;
}

.footer-col a:hover {
    color: white;
}

.footer-bottom {
    max-width: 1200px;
    margin: 40px auto 0;
    padding-top: 30px;
    border-top: 1px solid #333;
    text-align: center;
    color: #666;
}

/* 响应式 */
@media (max-width: 768px) {
    .nav-links {
        display: none;
    }
    
    .hero h1 {
        font-size: 32px;
    }
    
    .hero p {
        font-size: 16px;
    }
    
    .stats {
        gap: 30px;
    }
    
    .stat-item h3 {
        font-size: 32px;
    }
}

/* 内页hero */
.page-hero {
    padding: 140px 20px 60px;
    background: linear-gradient(135deg, var(--primary), var(--secondary));
    color: white;
    text-align: center;
}

.page-hero h1 {
    font-size: 42px;
    margin-bottom: 15px;
}

.page-hero p {
    font-size: 18px;
    opacity: 0.9;
}

/* 特色区块 */
.feature-row {
    display: flex;
    align-items: center;
    gap: 60px;
    max-width: 1100px;
    margin: 0 auto 80px;
}

.feature-row.reverse {
    flex-direction: row-reverse;
}

.feature-text {
    flex: 1;
}

.feature-text h3 {
    font-size: 28px;
    margin-bottom: 20px;
    color: var(--dark);
}

.feature-text p {
    color: var(--text-light);
    line-height: 1.8;
    margin-bottom: 15px;
}

.feature-visual {
    flex: 1;
    background: linear-gradient(135deg, var(--primary), var(--secondary));
    border-radius: 20px;
    height: 280px;
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 80px;
    color: white;
}

/* 表格样式 */
.data-table {
    width: 100%;
    border-collapse: collapse;
    background: white;
    border-radius: 10px;
    overflow: hidden;
    box-shadow: 0 5px 20px rgba(0,0,0,0.08);
}

.data-table th,
.data-table td {
    padding: 18px 20px;
    text-align: left;
    border-bottom: 1px solid #eee;
}

.data-table th {
    background: var(--primary);
    color: white;
    font-weight: 500;
}

.data-table tr:hover {
    background: #f8f9fa;
}

/* 表单 */
.form-container {
    max-width: 600px;
    margin: 0 auto;
    background: white;
    padding: 40px;
    border-radius: 15px;
    box-shadow: 0 5px 20px rgba(0,0,0,0.08);
}

.form-group {
    margin-bottom: 20px;
}

.form-group label {
    display: block;
    margin-bottom: 8px;
    font-weight: 500;
    color: var(--dark);
}

.form-group input,
.form-group select,
.form-group textarea {
    width: 100%;
    padding: 12px 15px;
    border: 2px solid #eee;
    border-radius: 8px;
    font-size: 15px;
    transition: border-color 0.3s;
}

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

.form-group .btn {
    width: 100%;
    padding: 15px;
    font-size: 16px;
}