:root {
  --primary: #ff0040;
  --accent: #91b2c5;
}

* {
  box-sizing: border-box;
}

html {
  scroll-behavior: smooth;
}

body {
  margin: 0;
  font-family: "Segoe UI", Tahoma, Geneva, Verdana, sans-serif;
  line-height: 1.6;
  background: #ffffff;
  color: #1f2a33;
}

.container {
  width: min(100% - 2rem, 960px);
  margin: 0 auto;
}

.site-header {
  position: sticky;
  top: 0;
  z-index: 1000;
  background: var(--primary);
  /* border-bottom: 3px solid var(--primary); */
  color: white;
}

.header-inner {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  justify-content: space-between;
  gap: 0.75rem 1.5rem;
  padding: 0.9rem 0;
}

h1 {
  margin: 0;
  font-size: clamp(1.4rem, 2.5vw, 2rem);
}

nav ul {
  display: flex;
  list-style: none;
  gap: 1rem;
  margin: 0;
  padding: 0;
}

:is(nav, h1) a {
  color: white;
  text-decoration: none;
  font-weight: 600;
  padding-bottom: 0.1rem;
  border-bottom: 2px solid transparent;
}

nav a:hover,
nav a:focus-visible {
  border-bottom-color: var(--primary);
}

main {
  padding: 2rem 0 3rem;
}

section {
  padding: 2rem 0;
  border-bottom: 1px solid #d9e3ea;
  scroll-margin-top: 6.5rem;
}

section:last-child {
  border-bottom: none;
}

h2 {
  margin-top: 0;
  color: var(--primary);
}

p {
  max-width: 70ch;
}