/* 全局样式 - 仅使用黑、白、红、蓝、黄 */
* {
    margin: 0;
    padding: 0;
    box-sizing: border-box;
}

:root {
    --color-black: #000000;
    --color-white: #ffffff;
    --color-red: #dc2626;
    --color-blue: #2563eb;
    --color-yellow: #eab308;
    --color-gray-light: #f5f5f5;
}

body {
    font-family: -apple-system, BlinkMacSystemFont, 'Segoe UI', 'PingFang SC', 'Hiragino Sans GB', 'Microsoft YaHei', sans-serif;
    line-height: 1.6;
    color: var(--color-black);
    background: var(--color-white);
}

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

/* 导航栏 */
.navbar {
    background: var(--color-white);
    border-bottom: 1px solid rgba(0, 0, 0, 0.1);
    padding: 1rem 0;
    position: sticky;
    top: 0;
    z-index: 100;
}

.navbar .container {
    display: flex;
    justify-content: space-between;
    align-items: center;
}

.logo {
    font-size: 1.5rem;
    font-weight: bold;
    color: var(--color-red);
    text-decoration: none;
}

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

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

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

/* 按钮样式 */
.btn-primary {
    background: var(--color-red);
    color: var(--color-white);
    padding: 0.5rem 1.5rem;
    border-radius: 0.5rem;
    text-decoration: none;
    display: inline-block;
    transition: opacity 0.3s;
    border: none;
    cursor: pointer;
    font-size: 1rem;
}

.btn-primary:hover {
    opacity: 0.9;
}

.btn-secondary {
    background: var(--color-white);
    color: var(--color-black);
    padding: 0.5rem 1.5rem;
    border-radius: 0.5rem;
    text-decoration: none;
    display: inline-block;
    border: 2px solid var(--color-black);
    transition: all 0.3s;
    font-size: 1rem;
}

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

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

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

.btn-large {
    padding: 1rem 2rem;
    font-size: 1.1rem;
}

.btn-card {
    width: 100%;
    text-align: center;
    padding: 0.75rem;
    background: var(--color-black);
    color: var(--color-white);
    text-decoration: none;
    border-radius: 0.5rem;
    display: block;
    transition: opacity 0.3s;
}

.btn-card:hover {
    opacity: 0.9;
}

/* Hero区域 */
.hero {
    padding: 5rem 0;
    text-align: center;
}

.hero-title {
    font-size: 3.5rem;
    font-weight: bold;
    margin-bottom: 1.5rem;
    line-height: 1.2;
}

.text-red {
    color: var(--color-red);
}

.hero-subtitle {
    font-size: 1.25rem;
    color: rgba(0, 0, 0, 0.7);
    margin-bottom: 2rem;
    max-width: 800px;
    margin-left: auto;
    margin-right: auto;
}

.hero-buttons {
    display: flex;
    gap: 1rem;
    justify-content: center;
    flex-wrap: wrap;
}

/* 功能区域 */
.features {
    padding: 5rem 0;
    background: var(--color-gray-light);
}

.section-title {
    font-size: 2.5rem;
    font-weight: bold;
    text-align: center;
    margin-bottom: 3rem;
}

.feature-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
    gap: 2rem;
}

.feature-card {
    background: var(--color-white);
    padding: 2rem;
    border-radius: 1rem;
    border: 2px solid rgba(0, 0, 0, 0.1);
    transition: border-color 0.3s;
}

.feature-card:hover {
    border-color: var(--color-red);
}

.feature-icon {
    font-size: 3rem;
    margin-bottom: 1rem;
}

.feature-card h3 {
    font-size: 1.5rem;
    margin-bottom: 1rem;
}

.feature-card p {
    color: rgba(0, 0, 0, 0.7);
}

/* 增长公会推广 */
.guild-promo {
    padding: 5rem 0;
    background: var(--color-yellow);
    text-align: center;
}

.guild-title {
    font-size: 2.5rem;
    font-weight: bold;
    margin-bottom: 1rem;
}

.guild-subtitle {
    font-size: 1.25rem;
    margin-bottom: 2rem;
    color: rgba(0, 0, 0, 0.8);
}

.guild-stats {
    display: flex;
    gap: 2rem;
    justify-content: center;
    margin-bottom: 2rem;
    flex-wrap: wrap;
}

.guild-stat {
    background: var(--color-white);
    padding: 2rem;
    border-radius: 1rem;
    min-width: 200px;
}

.stat-value {
    font-size: 2rem;
    font-weight: bold;
    color: var(--color-red);
    margin-bottom: 0.5rem;
}

.stat-label {
    color: rgba(0, 0, 0, 0.7);
}

/* 定价预览 */
.pricing-preview {
    padding: 5rem 0;
}

.pricing-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
    gap: 2rem;
    max-width: 1000px;
    margin: 0 auto;
}

.pricing-card {
    background: var(--color-white);
    border: 2px solid rgba(0, 0, 0, 0.1);
    border-radius: 1rem;
    padding: 2rem;
    position: relative;
    transition: border-color 0.3s;
}

.pricing-card:hover {
    border-color: var(--color-red);
}

.pricing-card.popular {
    border-color: var(--color-red);
    border-width: 4px;
    box-shadow: 0 10px 30px rgba(220, 38, 38, 0.2);
}

.popular-badge {
    position: absolute;
    top: -1rem;
    left: 50%;
    transform: translateX(-50%);
    background: var(--color-red);
    color: var(--color-white);
    padding: 0.25rem 1.5rem;
    border-radius: 1rem;
    font-size: 0.875rem;
    font-weight: bold;
}

.pricing-card h3 {
    font-size: 1.5rem;
    margin-bottom: 1rem;
}

.price {
    font-size: 3rem;
    font-weight: bold;
    margin-bottom: 0.5rem;
}

.price span {
    font-size: 1rem;
    color: rgba(0, 0, 0, 0.6);
}

.save-text {
    color: var(--color-red);
    font-weight: 600;
    margin-bottom: 1rem;
    font-size: 0.875rem;
}

.features-list {
    list-style: none;
    margin: 2rem 0;
}

.features-list li {
    padding: 0.5rem 0;
    color: rgba(0, 0, 0, 0.8);
}

/* 页脚 */
.footer {
    background: var(--color-black);
    color: var(--color-white);
    padding: 3rem 0;
    text-align: center;
}

.footer p {
    color: rgba(255, 255, 255, 0.5);
}

/* 响应式设计 */
@media (max-width: 768px) {
    .hero-title {
        font-size: 2rem;
    }
    
    .hero-subtitle {
        font-size: 1rem;
    }
    
    .nav-links {
        gap: 1rem;
        font-size: 0.875rem;
    }
    
    .section-title {
        font-size: 2rem;
    }
    
    .guild-title {
        font-size: 1.75rem;
    }
}