@font-face {
  font-family: main-font;
  src: url("../fonts/Roboto-Regular.ttf");
}
@font-face {
  font-family: bold-font;
  src: url("../fonts/Roboto-Bold.ttf");
}
@font-face {
  font-family: black-font;
  src: url("../fonts/Roboto-Black.ttf");
}
@font-face {
  font-family: roboto-bold;
  src: url("../fonts/RobotoCondensed-Bold.ttf");
}
@font-face {
  font-family: cervo-medium;
  src: url("../fonts/Cervo-Medium.otf");
}

* {
  box-sizing: border-box;
}

html,
body {
  margin: 0;
  padding: 0;
}

body {
  background: #fff;
  color: #272727;
  font-family: main-font, Roboto, "Helvetica Neue", Arial, sans-serif;
  font-size: 1rem;
  line-height: 1.55;
}

::selection {
  background: #d7edd8;
  color: #14351f;
}

.hero {
  background: #25874a;
  color: #fff;
  padding: 36px 18px 42px;
}

.hero-inner {
  max-width: 720px;
  margin: 0 auto;
  text-align: center;
}

.hero h1 {
  margin: 0;
  font-family: roboto-bold, Impact, sans-serif;
  font-size: clamp(1.55rem, 5vw, 2.35rem);
  font-weight: 800;
  line-height: 1.2;
  text-shadow: 2px 4px 5px rgba(0, 0, 0, 0.5);
}

.hero h1 span {
  color: #fff000;
}

.article {
  max-width: 720px;
  margin: 0 auto;
  padding: 28px 18px 8px;
}

.article p {
  font-size: 1.125rem;
  margin: 0 0 1.1rem;
}

.article p.lead {
  font-family: bold-font, sans-serif;
  font-size: 1.2rem;
}

.cta-wrap {
  text-align: center;
  margin: 8px 0 28px;
}

.cta-wrap a {
  display: inline-block;
}

.cta-img {
  width: min(320px, 88vw);
  height: auto;
}

.watch-btn {
  display: inline-block;
  background: linear-gradient(360deg, #e2be00 0%, #ffe456 100%);
  color: #1a1a1a;
  font-family: bold-font, sans-serif;
  font-size: 1.05rem;
  font-weight: 700;
  letter-spacing: 0.04em;
  text-decoration: none;
  padding: 14px 28px;
  border-radius: 8px;
  box-shadow: 0 3px 0 #b89600;
}

.watch-btn:hover {
  transform: scale(1.04);
}

.gif-link {
  display: block;
  width: min(400px, 92vw);
  margin: 8px auto 22px;
}

.thumb-gif {
  display: block;
  width: 100%;
  height: auto;
  border-radius: 10px;
  box-shadow: 0 10px 28px rgba(0, 0, 0, 0.28);
}

.reviews {
  text-align: center;
  margin: 8px 0 32px;
}

.reviews img {
  width: 170px;
  height: auto;
}

.reviews p {
  margin: 6px 0 0;
}

.reviews .count {
  font-family: bold-font, sans-serif;
}

.studies {
  background: #f3efe6;
  color: #2a2a2a;
  padding: 28px 16px 40px;
  border-top: 1px solid #ddd6c8;
}

.studies h2 {
  margin: 0 0 6px;
  text-align: center;
  font-family: roboto-bold, sans-serif;
  font-size: 1.2rem;
  font-weight: 700;
  letter-spacing: 0.01em;
  color: #163d28;
}

.studies-note {
  margin: 0 auto 22px;
  max-width: 32rem;
  text-align: center;
  font-size: 0.92rem;
  color: #3d4f42;
}

.study-list {
  max-width: 980px;
  margin: 0 auto;
  padding-left: 1.35rem;
  columns: 2;
  column-gap: 2.2rem;
}

.study-list li {
  break-inside: avoid;
  margin: 0 0 0.85rem;
  font-size: 0.84rem;
  line-height: 1.45;
  color: #333;
}

.study-list a {
  color: inherit;
  text-decoration: none;
  border-bottom: 1px solid #b7cfc0;
}

.study-list a:hover,
.study-list a:focus-visible {
  color: #145c32;
  border-bottom-color: #145c32;
}

.study-list a:focus-visible {
  outline: 2px solid #25874a;
  outline-offset: 2px;
}

.footer-top-bg {
  background: #083643;
}

.footer-menu ul {
  display: flex;
  flex-wrap: wrap;
  justify-content: space-around;
  margin: 0;
  padding: 12px 8px;
  list-style: none;
}

.footer-menu a {
  color: #fff;
  text-decoration: none;
  font-family: bold-font, sans-serif;
  font-size: 14px;
  line-height: 32px;
  padding: 8px 10px;
  display: inline-block;
}

.footer-menu a:hover {
  color: #8c9292;
}

.footer-middle-bg {
  background-image: url("../img/footer-middle-bg.png");
  background-size: cover;
  background-repeat: no-repeat;
  padding: 18px 16px 28px;
}

.disclaimer {
  max-width: 980px;
  margin: 0 auto;
}

.disclaimer p,
.disclaimer a {
  color: #898989;
  font-size: 0.875rem;
}

.disclaimer p {
  margin: 0 0 12px;
}

.text-center {
  text-align: center;
}

.bg-box {
  border: 1px solid lightgrey;
  display: grid;
  grid-template-columns: 160px 1fr;
  gap: 12px;
  align-items: center;
  padding: 8px 12px;
  margin-top: 8px;
}

.bg-box img {
  width: 140px;
  height: auto;
  display: block;
  margin: 0 auto;
}

.footer-bottom-bg {
  background-image: url("../img/footer-bottom-bg.png");
  background-size: cover;
  background-repeat: no-repeat;
}

.copyright {
  text-align: center;
  padding: 18px 12px;
  font-size: 16px;
}

@media (max-width: 800px) {
  .study-list {
    columns: 1;
  }

  .bg-box {
    grid-template-columns: 1fr;
  }
}