:root {
    --article-max: 860px;
    --primary-color: #e3b22c;
    --primary-dark: #c0931f;
    --text-dark: #1a1a1a;
    --text-muted: #6b7280;
    --border-color: #e5e7eb;
    --bg-light: #fdf8ec;
    --bg-card: #ffffff;
    --shadow-sm: 0 2px 8px rgba(0, 0, 0, 0.08);
    --shadow-md: 0 6px 20px rgba(0, 0, 0, 0.12);
    --shadow-lg: 0 8px 24px rgba(0,0,0,.12);
}

body {
    font-family: 'Roboto', -apple-system, BlinkMacSystemFont, 'Segoe UI', sans-serif;
    color: var(--text-dark);
    background: #f9fafb;
    line-height: 1.7;
    padding-top: 80px;
}

.header {
    position: fixed;
    top: 0;
    left: 0;
    right: 0;
    z-index: 1000;
    background: rgba(255, 255, 255, 0.96);
    backdrop-filter: blur(12px);
    box-shadow: var(--shadow-sm);
    transition: all 0.3s ease;
}

.header.scrolled {
    background: rgba(255, 255, 255, 0.98);
    box-shadow: var(--shadow-md);
}


.header .navbar-brand img {
    height: 46px;
}

.header .nav-link {
    font-weight: 500;
    color: var(--text-dark);
    padding: 0.5rem 1rem;
}

.header .nav-link.active {
    color: var(--primary-color);
}