:root {
  --color-navy: #0a2540;
  --color-navy-dark: #061a2e;
  --color-white: #ffffff;
  --color-red: #c41e3a;
  --color-red-hover: #a01830;
  --font-sans: "Segoe UI", "Helvetica Neue", Arial, sans-serif;
  --max-width: 1100px;
  --section-spacing: 3rem;
}

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

body {
  margin: 0;
  font-family: var(--font-sans);
  font-size: 1.125rem;
  line-height: 1.6;
  color: var(--color-white);
  background-color: var(--color-navy-dark);
}

.visually-hidden {
  position: absolute;
  width: 1px;
  height: 1px;
  padding: 0;
  margin: -1px;
  overflow: hidden;
  clip: rect(0, 0, 0, 0);
  white-space: nowrap;
  border: 0;
}

.hero {
  background-color: var(--color-navy);
  text-align: center;
  padding: 2.5rem 1.5rem 2rem;
}

.hero__content {
  max-width: var(--max-width);
  margin: 0 auto;
}

.hero__title {
  margin: 0 0 0.75rem;
  line-height: 1.1;
}

.hero__title-main {
  display: block;
  font-size: clamp(2rem, 6vw, 3.25rem);
  font-weight: 800;
  letter-spacing: 0.04em;
  color: var(--color-white);
}

.hero__title-accent {
  display: block;
  font-size: clamp(2.5rem, 8vw, 4.5rem);
  font-weight: 800;
  letter-spacing: 0.04em;
  color: var(--color-red);
  text-shadow:
    -1px -1px 0 var(--color-white),
    1px -1px 0 var(--color-white),
    -1px 1px 0 var(--color-white),
    1px 1px 0 var(--color-white);
  border-bottom: 4px solid var(--color-red);
  padding-bottom: 0.15em;
  margin-top: 0.1em;
}

.hero__tagline {
  margin: 0 0 0.5rem;
  font-size: clamp(1rem, 3vw, 1.35rem);
  font-weight: 700;
}

.hero__author {
  margin: 0 0 1.75rem;
  font-size: 1rem;
  font-weight: 700;
}

.hero__cover {
  margin: 0 auto 1.75rem;
  max-width: 400px;
}

.hero__cover img {
  display: block;
  width: 100%;
  max-width: 100%;
  height: auto;
  margin: 0 auto;
  border-radius: 4px;
  box-shadow: 0 12px 40px rgba(0, 0, 0, 0.45);
}

.hero__pitch {
  margin: 0;
  font-size: clamp(1.1rem, 3.5vw, 1.5rem);
  font-weight: 700;
  line-height: 1.35;
}

main {
  max-width: var(--max-width);
  margin: 0 auto;
  padding: var(--section-spacing) 1.5rem;
}

.about h2 {
  margin: 0 0 1rem;
  font-size: 1.75rem;
  font-weight: 800;
  color: var(--color-white);
}

.about p {
  margin: 0 0 1rem;
  color: rgba(255, 255, 255, 0.92);
}

.about p:last-child {
  margin-bottom: 0;
}

.cta {
  text-align: center;
  padding-top: 1rem;
  padding-bottom: var(--section-spacing);
}

.cta__button {
  display: inline-block;
  padding: 1rem 2.5rem;
  font-family: var(--font-sans);
  font-size: 1.25rem;
  font-weight: 800;
  letter-spacing: 0.03em;
  text-decoration: none;
  text-transform: uppercase;
  color: var(--color-white);
  background-color: var(--color-red);
  border: 2px solid var(--color-red);
  border-radius: 4px;
  cursor: pointer;
  transition: background-color 0.2s ease, border-color 0.2s ease;
}

.cta__button:hover {
  background-color: var(--color-red-hover);
  border-color: var(--color-red-hover);
}

.cta__button:focus {
  outline: 3px solid var(--color-white);
  outline-offset: 3px;
}

.cta__button:focus:not(:focus-visible) {
  outline: none;
}

.cta__button:focus-visible {
  outline: 3px solid var(--color-white);
  outline-offset: 3px;
}

.site-footer {
  background-color: var(--color-navy);
  text-align: center;
  padding: 2rem 1.5rem;
  font-size: 0.9rem;
  color: rgba(255, 255, 255, 0.75);
}

.site-footer p {
  margin: 0 0 0.75rem;
}

.site-footer p:last-child {
  margin-bottom: 0;
}

.site-footer__disclaimer {
  max-width: 42rem;
  margin-left: auto;
  margin-right: auto;
  font-size: 0.8rem;
  line-height: 1.5;
}

@media (min-width: 768px) {
  .hero {
    padding: 3.5rem 2rem 2.5rem;
  }

  main {
    padding-left: 2rem;
    padding-right: 2rem;
  }
}