.page-shell {
  min-height: 100dvh;
  display: flex;
  flex-direction: column;
}

.page-main {
  flex: 1 0 auto;
}

.container {
  width: min(100%, var(--content-max));
  margin-inline: auto;
  padding-inline: var(--space-10);
}

.section {
  padding-block: var(--space-24);
}

.section--compact {
  padding-block: var(--space-16);
}

.section-heading {
  max-width: 48rem;
  margin-block-end: var(--space-10);
}

.section-heading__eyebrow {
  display: inline-flex;
  align-items: center;
  gap: var(--space-2);
  margin-block-end: var(--space-3);
  color: var(--color-accent-strong);
  font-size: var(--font-small);
  font-weight: 700;
}

.section-heading__eyebrow::before {
  width: var(--space-7);
  height: 2px;
  background: var(--color-accent);
  content: "";
}

.section-heading h1,
.section-heading h2 {
  font-size: clamp(2rem, 5vw, var(--font-h1));
  font-weight: 800;
  line-height: 1.18;
  letter-spacing: -0.045em;
}

.section-heading p {
  margin-block-start: var(--space-4);
  color: var(--color-text-muted);
}

.grid-2,
.grid-3 {
  display: grid;
  gap: var(--space-5);
}

.grid-2 {
  grid-template-columns: repeat(2, minmax(0, 1fr));
}

.grid-3 {
  grid-template-columns: repeat(3, minmax(0, 1fr));
}

.cluster {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  gap: var(--space-3);
}

.stack {
  display: flex;
  flex-direction: column;
  gap: var(--space-4);
}

.site-header {
  position: sticky;
  inset-block-start: 0;
  z-index: 100;
  background: var(--color-header);
  border-bottom: var(--border-default);
  backdrop-filter: blur(0.75rem);
}

.site-header__inner {
  height: var(--header-height);
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: var(--space-5);
}

.site-brand {
  display: inline-flex;
  align-items: center;
  gap: var(--space-2);
  flex: 0 0 auto;
  font-size: 1.03125rem;
  font-weight: 800;
  letter-spacing: -0.025em;
}

.site-brand .icon {
  color: var(--color-accent);
}

.primary-nav {
  align-self: stretch;
}

.primary-nav__list {
  height: 100%;
  display: flex;
  align-items: stretch;
  gap: var(--space-1);
}

.primary-nav__item {
  position: relative;
  display: flex;
  align-items: center;
}

.primary-nav__trigger {
  min-height: 2.75rem;
  display: inline-flex;
  align-items: center;
  gap: var(--space-1);
  padding-inline: var(--space-3);
  color: var(--color-text-muted);
  background: transparent;
  border: 0;
  border-bottom: 2px solid transparent;
  cursor: pointer;
  font-size: 0.90625rem;
  font-weight: 600;
  white-space: nowrap;
}

.primary-nav__trigger:hover,
.primary-nav__trigger[aria-expanded="true"],
.primary-nav__trigger[aria-current="page"] {
  color: var(--color-accent-strong);
  border-bottom-color: var(--color-accent);
}

.primary-nav__trigger .icon {
  width: var(--space-3);
  height: var(--space-3);
  color: var(--color-border-strong);
  transition: transform var(--motion-base);
}

.primary-nav__trigger[aria-expanded="true"] .icon {
  transform: rotate(180deg);
}

.primary-nav__panel {
  position: absolute;
  inset-block-start: 100%;
  inset-inline-start: 50%;
  min-width: 12.5rem;
  padding: var(--space-2);
  background: var(--color-surface);
  border: var(--border-default);
  border-radius: var(--radius-menu);
  box-shadow: var(--shadow-menu);
  opacity: 0;
  visibility: hidden;
  pointer-events: none;
  transform: translate(-50%, -0.5rem);
  transition: opacity var(--motion-base), transform var(--motion-base), visibility var(--motion-base);
}

.primary-nav__item.is-open > .primary-nav__panel {
  opacity: 1;
  visibility: visible;
  pointer-events: auto;
  transform: translate(-50%, 0);
}

.primary-nav__panel a {
  display: block;
  padding: var(--space-2) var(--space-3);
  color: var(--color-text-muted);
  border-radius: var(--radius-control);
  font-size: 0.84375rem;
  font-weight: 600;
  white-space: nowrap;
}

.primary-nav__panel a:hover,
.primary-nav__panel a:focus-visible {
  color: var(--color-accent-strong);
  background: var(--color-surface-soft);
}

.primary-nav__panel--end {
  inset-inline-start: auto;
  inset-inline-end: 0;
  transform: translate(0, -0.5rem);
}

.primary-nav__item.is-open > .primary-nav__panel--end {
  transform: translate(0, 0);
}

.primary-nav__label {
  padding: var(--space-2) var(--space-3) var(--space-1);
  color: var(--color-text-faint);
  font-size: 0.6875rem;
  font-weight: 800;
  letter-spacing: 0.04em;
}

.primary-nav__divider {
  height: 1px;
  margin: var(--space-2) var(--space-3);
  background: var(--color-surface-soft);
}

.site-actions {
  display: flex;
  align-items: center;
  gap: var(--space-4);
  flex: 0 0 auto;
  font-size: 0.84375rem;
  font-weight: 600;
}

.site-actions__link {
  color: var(--color-text-muted);
}

.site-actions__link:hover {
  color: var(--color-text);
}

/* 로그인 회원 전용 회원카드 QR 바로가기(모바일 헤더). 데스크톱은 액션 묶음의 글자 링크를 쓰고 이 버튼은 숨긴다 */
.site-card-link {
  width: 2.75rem;
  height: 2.75rem;
  display: none;
  flex: 0 0 auto;
  align-items: center;
  justify-content: center;
  margin-inline-start: auto;
  color: var(--color-text);
  background: var(--color-surface);
  border: 1px solid var(--color-border-interactive);
  border-radius: var(--radius-pill);
}

.site-card-link:hover,
.site-card-link:focus-visible {
  color: var(--color-accent-strong);
}

.site-card-link__text {
  position: absolute;
  width: 1px;
  height: 1px;
  overflow: hidden;
  clip: rect(0, 0, 0, 0);
  white-space: nowrap;
}

.site-nav-toggle {
  width: 2.75rem;
  height: 2.75rem;
  display: none;
  align-items: center;
  justify-content: center;
  color: var(--color-text);
  background: var(--color-surface);
  border: 1px solid var(--color-border-interactive);
  border-radius: var(--radius-pill);
  cursor: pointer;
}

.site-nav-toggle .icon-close {
  display: none;
}

.site-nav-toggle[aria-expanded="true"] .icon-menu {
  display: none;
}

.site-nav-toggle[aria-expanded="true"] .icon-close {
  display: block;
}

.site-footer {
  flex: 0 0 auto;
  border-top: var(--border-default);
}

.site-footer__inner {
  min-height: 9rem;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: var(--space-6);
  padding-block: var(--space-10);
  color: var(--color-text-faint);
  font-size: 0.8125rem;
}

.site-footer__brand {
  display: flex;
  align-items: center;
  gap: var(--space-3);
}

.site-footer__brand strong {
  color: var(--color-text);
}

.site-footer__brand .icon {
  width: 1.0625rem;
  height: 1.0625rem;
  color: var(--color-accent);
}

.site-footer__links {
  display: flex;
  flex-wrap: wrap;
  gap: var(--space-5);
  font-weight: 600;
}

.site-footer__links a:first-child {
  color: var(--color-accent-strong);
}

.page-header {
  padding-block: var(--space-20) var(--space-10);
}

.breadcrumb ol {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  gap: var(--space-2);
  margin-block-end: var(--space-5);
  color: var(--color-text-faint);
  font-size: var(--font-small);
  font-weight: 600;
}

.breadcrumb li + li::before {
  margin-inline-end: var(--space-2);
  content: "·";
}

.breadcrumb a:hover {
  color: var(--color-accent-strong);
}

.breadcrumb [aria-current="page"] {
  color: var(--color-accent-strong);
  font-weight: 700;
}

.page-header__row {
  display: flex;
  align-items: flex-end;
  justify-content: space-between;
  gap: var(--space-12);
}

.page-header__title {
  font-size: clamp(2.25rem, 5vw, var(--font-h1));
  font-weight: 800;
  line-height: 1.12;
  letter-spacing: -0.045em;
}

.page-header__description {
  max-width: 26rem;
  margin-block-end: var(--space-2);
  color: var(--color-text-muted);
  line-height: 1.75;
}

.split {
  display: grid;
  grid-template-columns: 16.25rem minmax(0, 1fr);
  gap: var(--space-10);
  align-items: start;
}

.split--wide {
  grid-template-columns: 22rem minmax(0, 1fr);
}

.split__aside {
  position: sticky;
  inset-block-start: calc(var(--header-height) + var(--space-6));
}

.split__main {
  min-width: 0;
}

.section-body {
  padding-block-end: var(--space-24);
}

@media (max-width: 64rem) {
  .container {
    padding-inline: var(--space-6);
  }

  .grid-3 {
    grid-template-columns: repeat(2, minmax(0, 1fr));
  }

  .site-nav-toggle {
    display: inline-flex;
  }

  /* 드로어를 열지 않아도 햄버거 옆에서 바로 회원카드 QR을 연다 */
  .site-card-link {
    display: inline-flex;
  }

  .primary-nav {
    position: absolute;
    inset: var(--header-height) 0 auto;
    height: calc(100dvh - var(--header-height));
    display: none;
    padding: var(--space-4) var(--space-6) var(--space-10);
    overflow-y: auto;
    background: var(--color-bg);
    border-top: var(--border-default);
  }

  .primary-nav.is-open {
    display: block;
    height: calc(100dvh - var(--header-height) - var(--drawer-actions-height) - env(safe-area-inset-bottom, 0px));
  }

  .primary-nav__list,
  .primary-nav__item {
    height: auto;
    display: block;
  }

  .primary-nav__item {
    border-bottom: var(--border-default);
  }

  .primary-nav__trigger {
    width: 100%;
    min-height: 3.5rem;
    justify-content: space-between;
    padding-inline: 0;
    border-bottom: 0;
    font-size: var(--font-body);
  }

  .primary-nav__panel {
    position: static;
    min-width: 0;
    max-height: 0;
    padding: 0;
    overflow: hidden;
    background: transparent;
    border: 0;
    border-radius: 0;
    box-shadow: none;
    opacity: 0;
    visibility: hidden;
    transform: translateY(-0.5rem);
  }

  .primary-nav__item.is-open > .primary-nav__panel {
    max-height: none;
    padding-block-end: var(--space-3);
    opacity: 1;
    visibility: visible;
    transform: translateY(0);
  }

  .primary-nav__item.is-open > .primary-nav__panel--end {
    transform: translateY(0);
  }

  .primary-nav__panel a {
    padding: var(--space-2) var(--space-3);
    white-space: normal;
  }

  /* 액션 묶음은 햄버거 드로어를 열었을 때만 드로어 하단 바로 나타난다 */
  .site-actions {
    display: none;
  }

  .primary-nav.is-open ~ .site-actions {
    display: flex;
    position: absolute;
    inset-inline: 0;
    inset-block-start: calc(100dvh - var(--drawer-actions-height) - env(safe-area-inset-bottom, 0px));
    height: calc(var(--drawer-actions-height) + env(safe-area-inset-bottom, 0px));
    align-items: center;
    gap: var(--space-5);
    padding-inline: var(--space-6);
    padding-block-end: env(safe-area-inset-bottom, 0px);
    background: var(--color-bg);
    border-top: var(--border-default);
  }

  .primary-nav.is-open ~ .site-actions .site-actions__form {
    margin-inline-start: auto;
  }

  /* 모바일은 헤더의 QR 아이콘을 쓰므로 드로어 하단 바에서는 회원카드 글자 링크를 뺀다 */
  .site-actions__link--wide {
    display: none;
  }

  .page-header {
    padding-block: var(--space-14) var(--space-8);
  }

  .page-header__row {
    align-items: flex-start;
    flex-direction: column;
    gap: var(--space-4);
  }

  .split,
  .split--wide {
    grid-template-columns: minmax(0, 1fr);
    gap: var(--space-7);
  }

  .split__aside {
    position: static;
  }
}

@media (max-width: 40rem) {
  .container {
    padding-inline: var(--space-4);
  }

  .section {
    padding-block: var(--space-16);
  }

  .grid-2,
  .grid-3 {
    grid-template-columns: minmax(0, 1fr);
  }

  .primary-nav {
    padding-inline: var(--space-4);
  }

  .site-footer__inner,
  .site-footer__brand {
    align-items: flex-start;
    flex-direction: column;
  }
}

@media (max-height: 52rem) { .split__aside { position: static; } }