.challenge-offer {
  position: relative;
  overflow: hidden;
  display: grid;
  grid-template-columns: minmax(250px, 0.72fr) minmax(0, 1fr);
  grid-template-areas:
    "cover content"
    "cover purchase"
    "cover secure";
  gap: 18px clamp(24px, 4vw, 44px);
  align-items: center;
  margin-top: 24px;
  padding: clamp(18px, 3.2vw, 34px);
  border: 1px solid rgba(174, 230, 223, 0.72);
  border-radius: 28px;
  background:
    linear-gradient(135deg, rgba(255, 255, 255, 0.98), rgba(255, 250, 243, 0.97)),
    radial-gradient(circle at 0 0, rgba(174, 230, 223, 0.35), transparent 22rem);
  box-shadow: 0 22px 58px rgba(33, 29, 29, 0.1);
}

.challenge-cover-wrap {
  grid-area: cover;
  position: relative;
  align-self: stretch;
  display: grid;
  place-items: center;
  min-height: 100%;
  padding: clamp(10px, 1.7vw, 16px);
  border: 1px solid rgba(57, 50, 50, 0.08);
  border-radius: 24px;
  background:
    linear-gradient(180deg, rgba(174, 230, 223, 0.2), rgba(255, 255, 255, 0.88)),
    #fff;
  box-shadow: inset 0 0 0 1px rgba(255, 255, 255, 0.7), 0 16px 34px rgba(33, 29, 29, 0.08);
}

.challenge-cover {
  width: min(100%, 330px);
  aspect-ratio: 1 / 1;
  object-fit: contain;
  border-radius: 18px;
}

.challenge-badge {
  position: absolute;
  top: 16px;
  left: 16px;
  display: inline-flex;
  align-items: center;
  min-height: 28px;
  padding: 6px 10px;
  border-radius: 999px;
  background: rgba(33, 29, 29, 0.88);
  color: #fffaf3;
  font-size: 0.58rem;
  font-weight: 900;
  letter-spacing: 0.1em;
  text-transform: uppercase;
}

.challenge-offer-content {
  grid-area: content;
  min-width: 0;
}

.challenge-eyebrow {
  display: inline-flex;
  align-items: center;
  gap: 10px;
  margin: 0 0 10px;
  color: var(--red);
  font-size: 0.65rem;
  font-weight: 900;
  letter-spacing: 0.18em;
  text-transform: uppercase;
}

.challenge-eyebrow::before {
  content: "";
  width: 28px;
  height: 1px;
  background: currentColor;
}

.challenge-offer h2 {
  max-width: 660px;
  margin: 0;
  font-size: clamp(2.2rem, 4.4vw, 4rem);
  line-height: 0.96;
}

.challenge-intro {
  max-width: 660px;
  margin: 14px 0 0;
  color: rgba(57, 50, 50, 0.76);
  font-size: clamp(0.95rem, 1.2vw, 1.06rem);
  font-weight: 580;
}

.challenge-benefits {
  display: grid;
  gap: 8px;
  margin: 16px 0 0;
  padding: 0;
  list-style: none;
}

.challenge-benefits li {
  position: relative;
  padding-left: 28px;
  color: var(--dark);
  font-size: 0.88rem;
  font-weight: 780;
  line-height: 1.35;
}

.challenge-benefits li::before {
  content: "";
  position: absolute;
  left: 0;
  top: 0.2em;
  width: 18px;
  height: 18px;
  border-radius: 50%;
  background:
    linear-gradient(135deg, transparent 48%, var(--ink) 48% 58%, transparent 58%),
    var(--mint);
  box-shadow: 0 0 0 1px rgba(57, 50, 50, 0.08);
}

.challenge-purchase-row {
  grid-area: purchase;
  display: grid;
  grid-template-columns: minmax(150px, auto) minmax(190px, 280px);
  gap: 16px;
  align-items: center;
  width: 100%;
  margin-top: 4px;
  padding: 16px;
  border: 1px solid rgba(196, 32, 48, 0.12);
  border-radius: 22px;
  background: rgba(255, 255, 255, 0.76);
}

.challenge-price {
  display: grid;
  gap: 2px;
}

.challenge-price > span {
  color: var(--muted);
  font-size: 0.62rem;
  font-weight: 900;
  letter-spacing: 0.12em;
  text-transform: uppercase;
}

.challenge-price strong {
  color: var(--red);
  font-family: var(--serif);
  font-size: clamp(2.9rem, 5vw, 4.2rem);
  font-weight: 700;
  letter-spacing: -0.045em;
  line-height: 0.86;
  white-space: nowrap;
}

.challenge-price strong small {
  font-family: var(--sans);
  font-size: 0.74rem;
  font-weight: 950;
  letter-spacing: 0.08em;
  vertical-align: middle;
}

.challenge-price > em {
  color: rgba(57, 50, 50, 0.72);
  font-size: 0.75rem;
  font-style: normal;
  font-weight: 850;
  letter-spacing: 0.06em;
  text-transform: uppercase;
}

.challenge-buy-btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  min-height: 52px;
  width: min(100%, 280px);
  justify-self: end;
  padding: 13px 22px;
  border: 1px solid var(--red);
  border-radius: 999px;
  background: var(--red);
  color: #fff;
  box-shadow: 0 14px 28px rgba(196, 32, 48, 0.2);
  font-size: 0.76rem;
  font-weight: 950;
  letter-spacing: 0.08em;
  text-align: center;
  text-transform: uppercase;
  transition: transform 0.18s ease, background 0.18s ease, box-shadow 0.18s ease;
}

.challenge-buy-btn:hover {
  transform: translateY(-2px);
  background: var(--red-deep);
  box-shadow: 0 20px 38px rgba(196, 32, 48, 0.25);
}

.challenge-buy-btn:focus-visible {
  outline: 3px solid rgba(196, 32, 48, 0.22);
  outline-offset: 3px;
}

.challenge-secure {
  grid-area: secure;
  margin: -4px 4px 0;
  color: rgba(111, 102, 102, 0.72);
  font-size: 0.74rem;
  font-weight: 760;
  text-align: right;
}

@media (max-width: 900px) {
  .challenge-offer {
    grid-template-columns: 1fr;
    grid-template-areas:
      "cover"
      "content"
      "purchase"
      "secure";
  }

  .challenge-cover-wrap {
    width: min(430px, 100%);
    justify-self: center;
  }
}

@media (max-width: 680px) {
  .challenge-offer {
    margin-top: 20px;
    padding: 14px;
    border-radius: 24px;
  }

  .challenge-cover-wrap {
    padding: 10px;
    border-radius: 20px;
  }

  .challenge-cover {
    width: min(100%, 320px);
    border-radius: 15px;
  }

  .challenge-badge {
    top: 14px;
    left: 14px;
    max-width: calc(100% - 28px);
    font-size: 0.54rem;
  }

  .challenge-offer-content {
    padding: 2px 2px 0;
  }

  .challenge-offer h2 {
    font-size: clamp(2.25rem, 12vw, 3.45rem);
  }

  .challenge-purchase-row {
    grid-template-columns: 1fr;
    justify-items: stretch;
    padding: 14px;
  }

  .challenge-buy-btn {
    width: 100%;
    max-width: 320px;
    justify-self: start;
  }

  .challenge-secure {
    text-align: left;
  }
}