:root {
    --primary: #1f2937;
    --secondary: #0ea5e9;
    --accent: #f59e0b;
    --text: #374151;
    --light: #f9fafb;
    --border: #e5e7eb;
    --radius: 10px;
    --shadow: 0 10px 25px rgba(0,0,0,.08);
}

* {
    margin: 0;
    padding: 0;
    box-sizing: border-box;
}

html {
    scroll-behavior: smooth;
}

body {
    font-family: "Inter", system-ui, -apple-system, BlinkMacSystemFont;
    font-size: 16px;
    line-height: 1.7;
    color: var(--text);
    background: #fff;
}

h1, h2, h3, h4 {
    color: var(--primary);
    line-height: 1.3;
}

h1 { font-size: 2.6rem; }
h2 { font-size: 2rem; }
h3 { font-size: 1.4rem; }

p {
    margin-bottom: 1rem;
}

a {
    color: var(--secondary);
    text-decoration: none;
}

a:hover {
    text-decoration: underline;
}

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