:root {
  --container-max: 1500px;
  --gutter: 16px;
  --color-bg: #ffffff;
  --color-text: #0a0a0a;
  --color-subtext: #d0d0d0;
  --color-accent: #ffd166;
  --color-card: #ffffff;
  --radius: 12px;
  --color-green: #228b22;
  --bg: rgb(43 41 41 / 90%);
}

/* Base */
html {
  box-sizing: border-box;
}

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

body {
  margin: 0;
  font-family: Montserrat, "Proxima Nova", Metropolis, sans-serif;
  font-weight: 400;
  font-size: 16px;
  line-height: 1.5;
  color: var(--color-text);
  background-color: var(--color-bg);
}

img {
  max-width: 100%;
  display: block;
}

a {
  color: inherit;
  text-decoration: none;
}

.container {
  width: 100%;
  max-width: calc(var(--container-max) + var(--gutter) * 2);
  padding-left: 1rem;
  padding-right: 1rem;
  margin: 0 auto;
}

/* Header */
.header {
  position: sticky;
  top: 0;
  z-index: 10;
  background: var(--bg);
  backdrop-filter: saturate(130%) blur(6px);
}

.header__inner {
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 16px;
}

.header__logo {
  height: 15px;
  width: auto;
}

.button {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  padding: 10px 16px;
  border-radius: 999px;
  font-weight: 800;
  font-size: 18px;
  white-space: nowrap;
}

.button--offer {
  background: var(--color-green);
  color: var(--color-bg);
  border: 1px solid var(--color-bg);
  font-size: 12px;
}

/* Hero */
.hero {
  padding: 32px 0 8px;
}

.hero__title {
  font-size: 2rem;
  line-height: 1.05;
  font-weight: 700;
  margin: 8px 0 0;
  letter-spacing: -0.5px;
  text-align: center;
}

/* Grid */
.grid {
  display: grid;
  row-gap: 2rem;
}

.grid--12 {
  grid-template-columns: auto;
}

.grid__col--4 {
  grid-column: span 12;
}

/* Cards */
.cards {
  padding: 16px 0 32px;
}

.card {
  background: var(--color-card);
  border-radius: var(--radius);
  padding: 16px;
  display: flex;
  flex-direction: column;
  gap: 12px;
  -webkit-box-shadow: 0px 0px 10px 0px rgba(0, 0, 0, .55);
  box-shadow: 0px 0px 10px 0px rgba(0, 0, 0, .55);
}

.card__image {
  border-radius: 10px;
  margin: 0 auto;
}

.card__title {
  font-size: 1.5rem;
  font-weight: 700;
  margin: 0;
}

.card__desc {
  font-size: 19.5px;
  color: var(--color-text);
  margin: 0;
}

.card__cta {
  display: block;
  width: 90%;
  text-decoration: none;
  color: var(--color-green);
  text-align: center;
  margin: 2rem auto 1rem;
  background: #ffffff;
  text-transform: uppercase;
  padding: .75rem 0;
  border-radius: 5rem;
  font-size: 1rem;
  margin-top: auto;
  border: 3px solid var(--color-green);
}

.card__cta:hover {
  background: var(--color-green);
  color: var(--color-bg);
}

.card__cta.green {
  background: var(--color-green);
  color: var(--color-bg);
  border: 3px solid var(--color-bg);
}

.card__cta.green:hover {
  color: var(--color-green);
  background: #ffffff;
  border: 3px solid var(--color-green);
}

/* About */
.about {
  background: var(--bg);
  padding: 5em 0;
}

.about__lead {
  font-size: 26px;
  font-weight: 700;
  margin: 0 0 12px;
  color: var(--color-card);
  text-align: center;
}

.about__text {
  font-size: 1em;
  color: var(--color-subtext);
  margin: 12px 0;
}

.about__links {
  list-style: none;
  padding: 0;
  margin: 12px 0;
  display: grid;
  gap: 8px;
}

.about__link {
  font-size: 14.6667px;
  color: var(--color-green);
  text-decoration: underline;
}

.about__heading {
  font-weight: 700;
  margin: 16px 0 8px;
  color: var(--color-card);
}

.about__list {
  font-family: var(--font-montserrat);
  font-size: 1em;
  padding-left: 18px;
  margin: 0;
  display: grid;
  gap: 6px;
  color: var(--color-subtext);
}

/* Footer */
.footer {
  padding: 24px;
  background: #0d0d0d;
  border-top: 1px solid #1f1f1f;
}

.footer__inner {
  display: flex;
  flex-direction: column;
  gap: 12px;
  align-items: center;
  text-align: center;
}

.footer__copy {
  margin: 0;
  color: var(--color-subtext);
  font-size: 12px;
}

.footer__links {
  list-style: none;
  padding: 0;
  margin: 0;
  display: flex;
  gap: 16px;
}

.footer__link {
  color: var(--color-green);
  text-decoration: underline;
}

.footer__link img {
  max-width: 35px;
  max-height: 15px;
  margin: 0 auto;
}


/* Responsive */
@media (min-width: 768px) {
  .hero {
    padding: 48px 0 16px;
  }

  .header__logo {
    height: 18px;
    width: auto;
  }

  .cards {
    padding: 24px 0 48px;
  }

  /* Tablet: use 2-column grid */
  .grid {
    gap: 2rem;
  }

  .grid--12 {
    grid-template-columns: repeat(2, 1fr);
  }

  .grid__col--4 {
    grid-column: span 1;
  }

  .footer__inner {
    flex-direction: row;
    justify-content: space-between;
    text-align: left;
  }
}

@media (min-width: 1024px) {
  .container {
    width: 100%;
    max-width: calc(var(--container-max) + var(--gutter) * 2);
    padding-left: 6rem;
    padding-right: 6rem;
    margin: 0 auto;
  }

  .grid__col--4 {
    grid-column: span 4;
  }

  .hero__title {
    font-size: 3.5rem;
  }

  .header__inner {
    display: flex;
    align-items: center;
    justify-content: space-between;
    padding: 16px 6rem;
  }

  .header__logo {
    height: 32px;
    width: auto;
  }

  .button--offer {
    font-size: 18px;
    border: 3px solid var(--color-bg);
  }

  .grid {
    display: grid;
    gap: 4rem;
  }

  .grid--12 {
    grid-template-columns: repeat(12, 1fr);
  }

  .footer__copy {
    margin: 0;
    color: var(--color-subtext);
    font-size: 1rem;
  }
  
}