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

:root {
  --black: #0a0a0a;
  --white: #fafafa;
  --grey: #888;
  --accent: #c8f135;
  --font: 'Inter', sans-serif;
}

body { font-family: var(--font); background: var(--white); color: var(--black); line-height: 1.6; }

/* NAV */
nav { position: fixed; top: 0; width: 100%; padding: 1.2rem 2rem; background: rgba(250,250,250,0.92); backdrop-filter: blur(10px); border-bottom: 1px solid #eee; z-index: 100; }
.nav-inner { max-width: 1100px; margin: 0 auto; display: flex; align-items: center; justify-content: space-between; }
.logo { font-weight: 600; font-size: 1.1rem; letter-spacing: 0.05em; }
nav ul { list-style: none; display: flex; gap: 2rem; }
nav a { text-decoration: none; color: var(--black); font-size: 0.9rem; font-weight: 400; transition: color 0.2s; }
nav a:hover { color: var(--grey); }

/* HERO */
.hero { min-height: 100vh; display: flex; align-items: center; padding: 6rem 2rem 4rem; background: var(--black); color: var(--white); }
.hero-inner { max-width: 800px; margin: 0 auto; }
.eyebrow { font-size: 0.85rem; font-weight: 500; letter-spacing: 0.15em; text-transform: uppercase; color: var(--accent); margin-bottom: 1.5rem; }
h1 { font-size: clamp(3rem, 8vw, 7rem); font-weight: 300; line-height: 1; letter-spacing: -0.02em; margin-bottom: 1.5rem; }
.sub { font-size: 1.25rem; font-weight: 300; color: #aaa; max-width: 520px; margin-bottom: 2.5rem; }

/* BUTTON */
.btn { display: inline-block; padding: 0.85rem 2rem; background: var(--accent); color: var(--black); text-decoration: none; font-weight: 500; font-size: 0.9rem; border-radius: 2px; transition: opacity 0.2s; }
.btn:hover { opacity: 0.85; }

/* SECTIONS */
.section { padding: 6rem 2rem; }
.section-dark { background: #f4f4f4; }
.container { max-width: 1100px; margin: 0 auto; }
.container.center { text-align: center; }
h2 { font-size: 2.5rem; font-weight: 300; letter-spacing: -0.02em; margin-bottom: 1.5rem; }
p { color: #444; margin-bottom: 1rem; max-width: 640px; font-size: 1.05rem; }
.center p { margin: 0 auto 2rem; }

/* GRID */
.grid { display: grid; grid-template-columns: repeat(auto-fit, minmax(280px, 1fr)); gap: 1.5rem; margin-top: 2rem; }
.card { background: var(--white); padding: 2rem; border: 1px solid #e5e5e5; border-radius: 4px; }
.card h3 { font-size: 1.1rem; font-weight: 500; margin-bottom: 0.75rem; }
.card p { font-size: 0.95rem; color: var(--grey); max-width: 100%; margin: 0; }

/* FOOTER */
footer { padding: 2rem; text-align: center; border-top: 1px solid #eee; }
footer p { font-size: 0.85rem; color: var(--grey); margin: 0; max-width: 100%; }

@media (max-width: 600px) {
  nav ul { gap: 1rem; }
  h1 { font-size: 3rem; }
}