.plan-detail-page {
  background:
    radial-gradient(circle at 50% 8%, rgba(86, 126, 210, 0.12), transparent 34rem),
    #050609;
}

.plan-detail-header {
  background: rgba(6, 7, 10, 0.88);
  max-width: 1320px;
}

.plan-detail-main {
  background: #f4f3ef;
  border: 1px solid rgba(255, 255, 255, 0.16);
  border-radius: 22px;
  box-shadow:
    0 52px 140px rgba(0, 0, 0, 0.5),
    0 1px 0 rgba(255, 255, 255, 0.75) inset;
  color: #18191c;
  margin: clamp(28px, 5vw, 72px) auto;
  max-width: 1120px;
  min-height: 0;
  overflow: hidden;
  padding: 0 clamp(32px, 7vw, 92px);
}

.plan-detail-hero {
  border-bottom: 1px solid #d7d7d3;
  padding: clamp(54px, 8vw, 100px) 0 clamp(42px, 6vw, 74px);
}

.plan-detail-back,
.plan-detail-number,
.plan-category h2,
.plan-scope span {
  color: #376bbf;
  font-family: var(--mono);
  font-size: 11px;
  font-weight: 650;
  letter-spacing: 0.1em;
  text-transform: uppercase;
}

.plan-detail-back {
  display: inline-flex;
  margin-bottom: clamp(56px, 8vw, 92px);
}

.plan-detail-number {
  margin: 0 0 18px;
}

.plan-detail-hero h1 {
  background: none;
  color: #17181b;
  font-size: clamp(3rem, 7vw, 7.4rem);
  font-weight: 500;
  letter-spacing: -0.07em;
  line-height: 0.9;
  margin: 0;
  -webkit-text-fill-color: #17181b;
}

.plan-scope {
  align-items: center;
  background: #e8e8e5;
  border: 1px solid #d2d2ce;
  border-radius: 14px;
  display: flex;
  justify-content: space-between;
  margin-top: 38px;
  padding: 18px 20px;
}

.plan-scope strong {
  font-size: 1rem;
  font-weight: 560;
}

.plan-contents {
  padding: clamp(36px, 6vw, 72px) 0;
}

.plan-category {
  border-top: 1px solid #d7d7d3;
  display: grid;
  gap: 30px;
  grid-template-columns: minmax(150px, 0.32fr) 1fr;
  padding: 30px 0;
}

.plan-category:first-child {
  border-top: 0;
}

.plan-category h2 {
  line-height: 1.4;
  margin: 0;
}

.plan-category ul {
  display: grid;
  gap: 10px;
  list-style: none;
  margin: 0;
  padding: 0;
}

.plan-category li {
  background: #ffffff;
  border: 1px solid #dedfdf;
  border-radius: 12px;
  color: #3f4146;
  font-size: 0.96rem;
  line-height: 1.45;
  padding: 16px 18px 16px 46px;
  position: relative;
}

.plan-category li::before {
  color: #3975c9;
  content: "✓";
  font-size: 14px;
  font-weight: 700;
  left: 18px;
  position: absolute;
  top: 16px;
}

.plan-detail-footer {
  align-items: center;
  border-top: 1px solid #d7d7d3;
  color: #707279;
  display: flex;
  font-size: 0.78rem;
  gap: 24px;
  justify-content: space-between;
  line-height: 1.55;
  padding: 30px 0 42px;
}

.plan-detail-footer a {
  background: linear-gradient(145deg, #376fca, #24579f);
  border-radius: 11px;
  color: white;
  flex: 0 0 auto;
  font-size: 0.8rem;
  font-weight: 620;
  padding: 12px 14px;
}

.plan-footnote {
  color: #686a70;
  font-size: 0.8rem;
  margin: -18px 0 30px;
}

@media (max-width: 700px) {
  .plan-detail-main {
    border-radius: 14px;
    margin: 14px;
    padding: 0 22px;
  }

  .plan-category {
    grid-template-columns: 1fr;
  }

  .plan-detail-footer {
    align-items: flex-start;
    flex-direction: column;
  }
}