/* Modern Premium CSS Variables */
:root {
    --primary-color: #2563eb;
    /* Royal Blue */
    --primary-dark: #1e40af;
    --secondary-color: #f8fafc;
    --text-color: #1e293b;
    --text-muted: #64748b;
    --bg-color: #ffffff;
    --bg-alt: #f1f5f9;
    --border-color: #e2e8f0;
    --success-color: #10b981;
    --shadow-sm: 0 1px 2px 0 rgb(0 0 0 / 0.05);
    --shadow-md: 0 4px 6px -1px rgb(0 0 0 / 0.1), 0 2px 4px -2px rgb(0 0 0 / 0.1);
    --shadow-lg: 0 10px 15px -3px rgb(0 0 0 / 0.1), 0 4px 6px -4px rgb(0 0 0 / 0.1);
    --radius-md: 0.5rem;
    --radius-lg: 0.75rem;
    --font-sans: 'Inter', -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, "Helvetica Neue", Arial, sans-serif;
}

/* Base Reset & Typography */
* {
    margin: 0;
    padding: 0;
    box-sizing: border-box;
}

body {
    font-family: var(--font-sans);
    line-height: 1.6;
    color: var(--text-color);
    background-color: var(--bg-alt);
    -webkit-font-smoothing: antialiased;
    -moz-osx-font-smoothing: grayscale;
}

a {
    color: var(--primary-color);
    text-decoration: none;
    transition: color 0.2s ease;
}

a:hover {
    color: var(--primary-dark);
    text-decoration: underline;
}

/* Layout */
.container {
    max-width: 800px;
    margin: 0 auto;
    padding: 0 1.5rem;
}

header {
    background-color: var(--bg-color);
    padding: 2rem 0;
    border-bottom: 1px solid var(--border-color);
    box-shadow: var(--shadow-sm);
    margin-bottom: 3rem;
}

header .header-content {
    display: flex;
    flex-direction: column;
    align-items: center;
    text-align: center;
}

/* Logo Placeholder Styling */
.logo-container {
    width: 250px;
    height: auto;
    display: flex;
    align-items: center;
    justify-content: center;
    margin-bottom: 1rem;
}

.logo-container img {
    max-width: 100%;
    height: auto;
}

h1 {
    font-size: 2.25rem;
    font-weight: 800;
    letter-spacing: -0.025em;
    color: var(--text-color);
    margin-bottom: 0.5rem;
}

.subtitle {
    color: var(--text-muted);
    font-size: 1.125rem;
}

/* Main Content */
main {
    background-color: var(--bg-color);
    border-radius: var(--radius-lg);
    box-shadow: var(--shadow-lg);
    padding: 3rem;
    margin-bottom: 4rem;
}

section {
    margin-bottom: 2.5rem;
}

section:last-child {
    margin-bottom: 0;
}

h2 {
    font-size: 1.5rem;
    font-weight: 700;
    color: var(--text-color);
    margin-top: 2rem;
    margin-bottom: 1rem;
    padding-bottom: 0.5rem;
    border-bottom: 2px solid var(--bg-alt);
}

h2:first-child {
    margin-top: 0;
}

p {
    margin-bottom: 1.25rem;
    color: #475569;
    /* Slightly softer than pure black */
}

ul {
    list-style-type: disc;
    padding-left: 1.5rem;
    margin-bottom: 1.25rem;
    color: #475569;
}

li {
    margin-bottom: 0.5rem;
}

/* Distinct styling for the intro text block */
.intro-text {
    font-size: 1.1rem;
    color: var(--text-color);
    margin-bottom: 2rem;
    border-left: 4px solid var(--primary-color);
    padding-left: 1rem;
    background-color: var(--bg-alt);
    padding: 1rem;
    border-radius: 0 var(--radius-md) var(--radius-md) 0;
}

/* Footer can be simple */
footer {
    text-align: center;
    padding: 2rem 0;
    color: var(--text-muted);
    font-size: 0.875rem;
}

/* Responsive */
@media (max-width: 640px) {
    main {
        padding: 1.5rem;
    }

    h1 {
        font-size: 1.75rem;
    }

    h2 {
        font-size: 1.25rem;
    }
}