:root {
    --primary-blue: #2f6fd6;
    --headline-dark: #1f2933;
    --body-gray: #5f6c7b;
    --light-bg: #f8fafc;
    --card-border: #e5eaf0;
}

body {
    font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto,
        "Helvetica Neue", Arial, sans-serif;
    margin: 0;
    padding: 0;
    background: #ffffff;
    color: var(--headline-dark);
    line-height: 1.65;
}

.container {
    max-width: 1000px;
    margin: 0 auto;
    padding: 80px 20px;
}

h1 {
    font-size: 48px;
    font-weight: 700;
    text-align: center;
    margin-bottom: 20px;
    color: var(--headline-dark);
}

h1 span {
    color: var(--primary-blue);
}

.intro {
    text-align: center;
    font-size: 18px;
    color: var(--body-gray);
    max-width: 720px;
    margin: 0 auto 60px auto;
}

h2 {
    font-size: 28px;
    font-weight: 600;
    margin-top: 60px;
    margin-bottom: 20px;
    color: var(--headline-dark);
}

p {
    font-size: 16px;
    color: var(--body-gray);
    margin-bottom: 18px;
}

ul {
    margin: 20px 0;
    padding-left: 20px;
    color: var(--body-gray);
}

li {
    margin-bottom: 8px;
}

.highlight {
    font-weight: 600;
    color: var(--headline-dark);
}

.card {
    background: var(--light-bg);
    border: 1px solid var(--card-border);
    padding: 30px;
    border-radius: 12px;
    margin-top: 30px;
}