:root {
    --primary-color: #d70018; /* Apple/China Red */
    --text-color: #1d1d1f;
    --text-secondary: #86868b;
    --bg-color: #fbfbfd;
    --card-bg: #ffffff;
    --border-radius: 18px;
    --font-stack: -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, Helvetica, Arial, sans-serif, "Apple Color Emoji", "Segoe UI Emoji", "Segoe UI Symbol";
}

body {
    font-family: var(--font-stack);
    background-color: var(--bg-color);
    color: var(--text-color);
    margin: 0;
    padding: 0;
    line-height: 1.6;
    -webkit-font-smoothing: antialiased;
}

.container {
    max-width: 800px;
    margin: 0 auto;
    padding: 0 20px;
}

/* Header */
.site-header {
    background: rgba(255, 255, 255, 0.8);
    backdrop-filter: blur(20px);
    position: sticky;
    top: 0;
    z-index: 100;
    border-bottom: 1px solid rgba(0,0,0,0.1);
    padding: 20px 0;
}

.logo a {
    color: var(--text-color);
    text-decoration: none;
    font-weight: 600;
    font-size: 24px;
}

/* Main Content */
main {
    padding: 40px 0;
}

/* Post Card */
.post-card {
    background: var(--card-bg);
    border-radius: var(--border-radius);
    padding: 30px;
    margin-bottom: 30px;
    box-shadow: 0 4px 20px rgba(0,0,0,0.05);
    transition: transform 0.2s ease, box-shadow 0.2s ease;
}

.post-card:hover {
    transform: translateY(-2px);
    box-shadow: 0 8px 30px rgba(0,0,0,0.1);
}

.post-title {
    margin-top: 0;
    margin-bottom: 15px;
    font-size: 24px;
    font-weight: 700;
}

.post-title a {
    color: var(--text-color);
    text-decoration: none;
}

.post-title a:hover {
    color: var(--primary-color);
}

.post-quote {
    font-size: 18px;
    color: var(--text-color);
    margin-bottom: 15px;
    padding-left: 15px;
    border-left: 4px solid var(--primary-color);
}

.post-review {
    background-color: #f5f5f7;
    padding: 15px;
    border-radius: 12px;
    margin-bottom: 15px;
    font-size: 14px;
    color: var(--text-secondary);
}

.review-label {
    font-weight: 600;
    color: var(--primary-color);
}

.post-summary {
    color: var(--text-secondary);
    margin-bottom: 20px;
}

.read-more {
    display: inline-block;
    color: var(--primary-color);
    text-decoration: none;
    font-weight: 500;
    font-size: 14px;
}

.read-more:hover {
    text-decoration: underline;
}

/* Detail Page */
.post-detail {
    background: var(--card-bg);
    padding: 40px;
    border-radius: var(--border-radius);
    box-shadow: 0 4px 20px rgba(0,0,0,0.05);
}

.post-header {
    margin-bottom: 30px;
    text-align: center;
}

.post-detail .post-title {
    font-size: 32px;
}

.post-content {
    font-size: 18px;
    line-height: 1.8;
}

.back-link {
    margin-top: 40px;
    padding-top: 20px;
    border-top: 1px solid #eee;
}

.back-link a {
    color: var(--text-secondary);
    text-decoration: none;
}

.back-link a:hover {
    color: var(--primary-color);
}

/* Footer */
.site-footer {
    text-align: center;
    padding: 40px 0;
    color: var(--text-secondary);
    font-size: 12px;
}