:root {
    --primary: #FF6B35;
    --primary-dark: #E55A2B;
    --text: #1a1a2e;
    --text-light: #666;
    --bg: #ffffff;
    --bg-alt: #f8f9fa;
    --card-bg: #ffffff;
    --border: #e0e0e0;
    --shadow: 0 4px 20px rgba(0, 0, 0, 0.08);
}

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

body {
    font-family: -apple-system, BlinkMacSystemFont, 'Segoe UI', 'Microsoft YaHei', 'PingFang SC', sans-serif;
    color: var(--text);
    line-height: 1.6;
    background: var(--bg);
    padding: 0;
}

.page-header {
    display: flex;
    justify-content: space-between;
    align-items: center;
    padding: 24px 40px;
    background: linear-gradient(135deg, #1a1a2e 0%, #16213e 100%);
}

.page-header h1 {
    font-size: 28px;
    font-weight: 700;
    color: white;
    margin: 0;
    padding: 0;
    border: none;
}

.page-header .page-actions {
    display: flex;
    align-items: center;
}

.btn-edit {
    display: inline-block;
    padding: 8px 16px;
    background: var(--primary);
    color: white;
    text-decoration: none;
    border-radius: 6px;
    font-size: 14px;
}

.page-content {
    padding: 32px 40px;
    max-width: 1200px;
}

h1 {
    font-size: 32px;
    font-weight: 700;
    margin-bottom: 28px;
    color: var(--text);
    padding-bottom: 14px;
    border-bottom: 3px solid var(--primary);
}

h2 {
    font-size: 22px;
    font-weight: 600;
    margin: 28px 0 14px;
    color: var(--text);
}

h3 {
    font-size: 18px;
    font-weight: 600;
    margin: 20px 0 10px;
    color: var(--primary);
}

h4 {
    font-size: 16px;
    font-weight: 600;
    margin-bottom: 10px;
    color: var(--text);
}

p {
    margin-bottom: 14px;
    color: var(--text-light);
}

ul, ol {
    margin-bottom: 14px;
    padding-left: 24px;
}

li {
    margin-bottom: 6px;
    color: var(--text-light);
}

pre {
    background: #1a1a2e;
    border-radius: 12px;
    padding: 18px;
    overflow-x: auto;
    margin: 14px 0;
}

code {
    color: #e0e0e0;
    font-family: 'SF Mono', 'Monaco', 'Inconsolata', 'Fira Code', monospace;
    font-size: 13px;
    line-height: 1.6;
}

.content-block {
    background: var(--bg-alt);
    border-radius: 12px;
    padding: 20px;
    margin: 14px 0;
}

.highlight {
    background: linear-gradient(135deg, #fff5f0 0%, #fff0e6 100%);
    border-left: 4px solid var(--primary);
    padding: 14px 20px;
    border-radius: 0 10px 10px 0;
    margin: 14px 0;
}

.image-container {
    margin: 20px 0;
    text-align: center;
}

.image-container img {
    max-width: 100%;
    height: auto;
    border-radius: 12px;
    box-shadow: 0 4px 20px rgba(0, 0, 0, 0.1);
}

.image-caption {
    margin-top: 10px;
    font-size: 13px;
    color: var(--text-light);
}

.card-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(240px, 1fr));
    gap: 20px;
    margin: 20px 0;
}

.card {
    background: var(--card-bg);
    border-radius: 12px;
    padding: 20px;
    box-shadow: var(--shadow);
    border: 1px solid var(--border);
    transition: all 0.3s ease;
}

.card:hover {
    transform: translateY(-4px);
    box-shadow: 0 8px 30px rgba(255, 107, 53, 0.15);
    border-color: var(--primary);
}

.card h3 {
    margin: 0 0 8px;
    font-size: 16px;
    color: var(--primary);
}

.card p {
    margin: 0;
    font-size: 13px;
}