:root {
    --primary: #007bff;
    --dark: #1a1a1a;
    --light: #f8f9fa;
    --gray: #666;
}

* { margin: 0; padding: 0; box-sizing: border-box; }
body { font-family: 'Noto Sans KR', sans-serif; line-height: 1.6; color: var(--dark); }
.container { max-width: 1100px; margin: 0 auto; padding: 0 20px; }

/* Header & Nav */
header { background: #fff; padding: 20px 0; box-shadow: 0 2px 5px rgba(0,0,0,0.05); position: sticky; top: 0; z-index: 100; }
.header-flex { display: flex; justify-content: space-between; align-items: center; }
.logo { font-size: 24px; font-weight: 700; color: var(--primary); text-decoration: none; }
nav ul { display: flex; list-style: none; gap: 20px; }
nav a { text-decoration: none; color: var(--dark); font-weight: 500; }
nav a:hover { color: var(--primary); }

/* Common Sections */
section { padding: 80px 0; }
h2 { font-size: 32px; text-align: center; margin-bottom: 40px; }
.btn { display: inline-block; padding: 12px 30px; border-radius: 5px; text-decoration: none; cursor: pointer; }
.btn-primary { background: var(--primary); color: #fff; }

/* Footer */
footer { background: #333; color: #fff; padding: 40px 0; font-size: 14px; }
.footer-grid { display: grid; grid-template-columns: 1fr 1fr; gap: 20px; }
.footer-right { text-align: right; }