.application {
  display: grid;
  grid-template-columns: 1fr;
  gap: 32px;
  align-items: start;
  max-width: 900px;
  margin: 0 auto;
}

body {
  background:
    radial-gradient(circle at 8% 12%, rgba(141, 162, 174, .18), transparent 28rem),
    linear-gradient(180deg, #f8fafb 0, #eef3f5 100%);
}

.topbar {
  height: 84px;
  justify-content: center;
  background: rgba(248, 250, 251, .88);
}

.logo-link img {
  display: block;
  width: 188px;
  height: auto;
}

.application.section {
  padding-top: 66px;
  padding-bottom: 120px;
}

.form-heading {
  position: static;
  text-align: center;
}

.form-heading h2 {
  margin-top: 10px;
  color: #263e4d;
  font-size: clamp(36px, 5vw, 52px);
  letter-spacing: .08em;
}

.form-heading .section-number {
  margin: 0;
  letter-spacing: .28em;
}

form {
  gap: 32px;
  padding: clamp(30px, 5vw, 58px);
  border: 1px solid rgba(102, 125, 141, .14);
  border-radius: 24px;
  box-shadow: 0 24px 70px rgba(51, 75, 91, .11);
}

label > span,
legend {
  margin-bottom: 10px;
  color: #304958;
  letter-spacing: .025em;
}

input,
textarea,
select {
  border-color: #d6dfe3;
  border-radius: 10px;
  background: #f8fafb;
}

input:hover,
textarea:hover,
select:hover {
  border-color: #aebdc5;
}

footer {
  justify-content: center;
  padding-top: 38px;
  padding-bottom: 38px;
  background: #dfe8ed;
}

footer .logo-link img {
  width: 154px;
}

select {
  width: 100%;
  border: 1px solid var(--line);
  border-radius: 3px;
  padding: 15px 14px;
  font: inherit;
  background: #fbfcfc;
  color: var(--ink);
}

select:focus {
  outline: 3px solid rgba(102, 125, 141, .16);
  border-color: var(--blue);
}

.address-fields {
  display: grid;
  gap: 18px;
}

.terms-link {
  color: var(--blue-dark);
  text-decoration-thickness: 1px;
  text-underline-offset: 4px;
}

.plan-section {
  display: grid;
  gap: 26px;
  margin-top: 10px;
  padding-top: 38px;
  border-top: 1px solid #dce4e8;
}

.form-section-heading h3 {
  margin: 4px 0 0;
  font-family: "Yu Mincho", "Hiragino Mincho ProN", serif;
  color: #294352;
  font-size: 32px;
  font-weight: 500;
}

.plan-grid {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 14px;
  margin-top: 12px;
}

.plan-card {
  position: relative;
  cursor: pointer;
}

.plan-card > input {
  position: absolute;
  opacity: 0;
}

.plan-card-body {
  display: grid;
  gap: 8px;
  min-height: 164px;
  padding: 22px;
  border: 1px solid var(--line);
  overflow: hidden;
  border-radius: 14px;
  background: linear-gradient(145deg, #fbfcfc, #f2f6f7);
  transition: .2s ease;
}

.plan-card-body small {
  color: var(--blue);
  font-size: 12px;
  font-weight: 700;
  letter-spacing: .13em;
}

.plan-card-body strong {
  color: var(--blue-dark);
  font-size: 30px;
  line-height: 1.2;
}

.plan-card-body strong em {
  margin: 0 0 0 3px;
  padding: 0;
  background: transparent;
  color: inherit;
  font-size: 13px;
}

.plan-card-body > span {
  color: #64747d;
  font-size: 14px;
}

.plan-card input:checked + .plan-card-body {
  border-color: var(--blue);
  background: linear-gradient(145deg, #e8eff2, #dce6eb);
  box-shadow: inset 0 0 0 1px var(--blue), 0 10px 28px rgba(51, 75, 91, .12);
  transform: translateY(-2px);
}

.plan-card input:focus-visible + .plan-card-body {
  outline: 3px solid rgba(102, 125, 141, .2);
  outline-offset: 2px;
}

.start-notice {
  padding: 20px 22px;
  border-left: 4px solid var(--blue);
  border-radius: 0 12px 12px 0;
  background: #edf3f5;
}

.application-details {
  display: grid;
  gap: 24px;
  padding: 26px;
  border: 1px solid #d9e2e6;
  border-radius: 16px;
  background: #fbfcfc;
}

.application-details label > small {
  display: block;
  margin: 7px 0 0;
}

.payment-grid {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 12px;
  margin-top: 12px;
}

.payment-card {
  position: relative;
  cursor: pointer;
}

.payment-card input {
  position: absolute;
  opacity: 0;
  pointer-events: none;
}

.payment-card span {
  display: grid;
  place-items: center;
  min-height: 58px;
  margin: 0;
  padding: 12px;
  border: 1px solid var(--line);
  border-radius: 10px;
  background: #f8fafb;
  color: var(--blue-dark);
  text-align: center;
  transition: .2s ease;
}

.payment-card input:checked + span {
  border-color: var(--blue);
  background: var(--blue-soft);
  box-shadow: inset 0 0 0 1px var(--blue);
}

.payment-card input:focus-visible + span {
  outline: 3px solid rgba(102, 125, 141, .2);
  outline-offset: 2px;
}

.field-note {
  margin: 10px 0 0;
  color: #5b6d76;
  font-size: 13px;
}

.start-notice p {
  margin: 4px 0 0;
  color: #5b6d76;
  font-size: 14px;
}

.change-rule {
  padding: 28px;
  border: 1px solid #d9e2e6;
  border-radius: 16px;
  background: #fbfcfc;
}

.change-rule h4 {
  margin: 0 0 18px;
  font-size: 18px;
}

.change-flow {
  display: grid;
  grid-template-columns: 1fr auto 1fr;
  gap: 14px;
  align-items: center;
}

.change-flow div {
  display: grid;
  gap: 3px;
  padding: 14px;
  border-radius: 10px;
  background: #edf2f4;
  text-align: center;
}

.change-flow small {
  color: var(--blue);
  font-size: 12px;
  font-weight: 700;
}

.change-flow > span {
  color: var(--blue);
  font-size: 24px;
}

.change-rule > p {
  margin: 16px 0 0;
  color: #5b6d76;
  font-size: 14px;
}

.terms-document {
  display: flex;
  justify-content: space-between;
  align-items: center;
  gap: 16px;
  margin-bottom: 14px;
  padding: 16px 18px;
  border-radius: 10px;
  background: #eef3f5;
  font-size: 14px;
}

.consent-area {
  border-top-color: #dce4e8;
}

.consent-area h3 {
  color: #294352;
  font-size: 23px;
}

.check-card {
  border-radius: 12px;
  background: #fbfcfc;
  transition: border-color .2s, background .2s;
}

.check-card:hover {
  border-color: #aebdc5;
  background: #f6f9fa;
}

.submit-button {
  min-height: 60px;
  border-radius: 12px;
  background: linear-gradient(135deg, #526d7e, #334f60);
  box-shadow: 0 12px 26px rgba(51, 75, 91, .2);
}

.submit-button:hover {
  filter: brightness(1.06);
}

.submit-button:disabled {
  cursor: wait;
  filter: saturate(.5);
  opacity: .72;
}

.thanks-page {
  min-height: calc(100svh - 156px);
  display: grid;
  place-items: center;
  padding: 56px 20px 88px;
}

.thanks-card {
  width: min(680px, 100%);
  padding: clamp(36px, 7vw, 72px);
  border: 1px solid rgba(102, 125, 141, .15);
  border-radius: 24px;
  background: #fff;
  box-shadow: 0 24px 70px rgba(51, 75, 91, .11);
  text-align: center;
}

.thanks-piece {
  width: 68px;
  height: 68px;
  display: grid;
  place-items: center;
  margin: 0 auto 24px;
  border-radius: 17px 23px 17px 23px;
  background: linear-gradient(145deg, #71899a, #405d6e);
  color: #fff;
  font-size: 28px;
  box-shadow: 0 12px 26px rgba(51, 75, 91, .18);
}

.thanks-card h1 {
  margin: 10px 0 20px;
  color: #294352;
  font-family: "Yu Mincho", "Hiragino Mincho ProN", serif;
  font-size: clamp(30px, 6vw, 46px);
  font-weight: 500;
  line-height: 1.45;
}

.thanks-card > p {
  margin: 0;
  color: #586b75;
}

.thanks-next {
  display: grid;
  gap: 10px;
  margin: 32px 0;
  padding: 20px;
  border-radius: 14px;
  background: #edf3f5;
  text-align: left;
}

.thanks-next strong {
  color: #304958;
}

.thanks-next span {
  color: #5b6d76;
  font-size: 14px;
}

.thanks-link {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  min-height: 54px;
  padding: 0 28px;
  border-radius: 10px;
  background: #526d7e;
  color: #fff;
  text-decoration: none;
  font-weight: 600;
}

.terms-document .terms-link {
  flex: 0 0 auto;
  font-weight: 700;
}

@media (max-width: 760px) {
  .application {
    gap: 24px;
  }

  .application.section {
    padding: 42px 16px 72px;
  }

  .topbar {
    height: 72px;
  }

  .logo-link img {
    width: 156px;
  }

  form {
    margin: 0;
    padding: 28px 18px;
    border-radius: 18px;
  }

  footer {
    align-items: center;
  }

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

  .plan-card-body {
    min-height: 136px;
  }

  .change-rule {
    padding: 20px 16px;
  }

  .application-details {
    padding: 20px 16px;
  }

  .payment-grid {
    grid-template-columns: 1fr;
  }

  .change-flow {
    grid-template-columns: 1fr;
    gap: 8px;
  }

  .change-flow > span {
    line-height: 1;
    transform: rotate(90deg);
  }

  .terms-document {
    align-items: flex-start;
    flex-direction: column;
  }
}