:root {
    --primary: #0b5ed7;
    --secondary: #084298;
    --text-dark: #1f2937;
    --text-light: #6b7280;
    --bg-light: #f8fafc;
    --border: #e5e7eb;
}

* {
    box-sizing: border-box;
}

body {
    margin: 0;
    font-family: "Inter", "Segoe UI", Roboto, Helvetica, Arial, sans-serif;
    background: var(--bg-light);
    color: var(--text-dark);
    line-height: 1.75;
}

/* Header */
.header {
    background: linear-gradient(90deg, var(--primary), var(--secondary));
    padding: 22px 15px;
    text-align: center;
}

.header h1 {
    margin: 0;
    font-size: 26px;
    font-weight: 600;
    letter-spacing: 0.4px;
    color: #ffffff;
}

/* Main Container */
.container {
    max-width: 920px;
    margin: 50px auto;
    background: #ffffff;
    padding: 42px;
    border-radius: 12px;
    border: 1px solid var(--border);
    box-shadow: 0 20px 40px rgba(0,0,0,0.05);
}

/* Headings */
h2 {
    margin-top: 36px;
    margin-bottom: 12px;
    font-size: 20px;
    font-weight: 600;
    color: var(--primary);
}

/* Text */
p {
    font-size: 15.5px;
    color: var(--text-dark);
    margin-bottom: 14px;
}

ul {
    padding-left: 20px;
    margin-top: 10px;
}

li {
    font-size: 15px;
    margin-bottom: 10px;
    color: var(--text-dark);
}

/* Highlight box */
.highlight {
    background: #f1f5ff;
    border-left: 4px solid var(--primary);
    padding: 18px 20px;
    border-radius: 6px;
    margin: 28px 0;
    font-size: 15px;
    color: #1e3a8a;
    font-weight: 500;
}

/* Footer */
.footer {
    margin-top: 45px;
    padding-top: 18px;
    border-top: 1px solid var(--border);
    text-align: center;
    font-size: 14px;
    color: var(--text-light);
}

/* Mobile */
@media (max-width: 768px) {
    .container {
        margin: 20px;
        padding: 28px;
    }

    .header h1 {
        font-size: 22px;
    }
}