/* Variables */
:root {
  --color-primary: #013DFD;
  --color-text: #050505;
  --color-muted: #555555;
  --color-bg: #FFFFFF;
  --color-surface-blue: rgba(1, 61, 253, 0.04);
  --color-border: rgba(1, 61, 253, 0.16);
  --color-glass: rgba(255, 255, 255, 0.72);
  --shadow-glass: 0 20px 60px rgba(1, 61, 253, 0.08);
  --radius-panel: 24px;
  --radius-card: 16px;
  --sidebar-width: 220px;
  --content-width: 1120px;
  --space-page-x: 32px;
  --space-page-y: 28px;
  --font-primary: "Pretendard", -apple-system, BlinkMacSystemFont, "Segoe UI", sans-serif;
  --font-weight-regular: 400;
  --font-weight-bold: 700;
  --font-weight-extra-bold: 800;
  --font-weight-black: 900;
  --blue-title-gradient: linear-gradient(to top left, #4F76FF 0%, #1247FF 38%, #013DFD 72%, #002FD1 100%);
}

/* Base */
*,
*::before,
*::after {
  box-sizing: border-box;
}

html {
  scroll-behavior: smooth;
}

body {
  margin: 0;
  color: var(--color-text);
  background:
    linear-gradient(90deg, rgba(1, 61, 253, 0.035) 0 1px, transparent 1px 100%),
    var(--color-bg);
  background-size: 180px 100%;
  font-family: var(--font-primary);
  font-size: 16px;
  font-weight: var(--font-weight-regular);
  letter-spacing: 0;
  word-break: keep-all;
}

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

button {
  font: inherit;
}

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

address {
  font-style: normal;
}

.skip-link {
  position: fixed;
  top: 12px;
  left: 12px;
  z-index: 1000;
  transform: translateY(-150%);
  padding: 10px 14px;
  background: var(--color-primary);
  color: #fff;
  font-weight: var(--font-weight-regular);
}

.skip-link:focus {
  transform: translateY(0);
}

:focus-visible {
  outline: 3px solid var(--color-primary);
  outline-offset: 4px;
}

/* Sidebar */
.site-sidebar {
  position: fixed;
  inset: 0 auto 0 0;
  z-index: 50;
  display: flex;
  width: var(--sidebar-width);
  height: 100vh;
  flex-direction: column;
  gap: 58px;
  padding: 38px 28px;
  border-right: 1px solid rgba(1, 61, 253, 0.11);
  background: rgba(255, 255, 255, 0.86);
  backdrop-filter: blur(16px);
}

.site-logo {
  display: inline-flex;
  width: 154px;
  max-width: 100%;
}

.site-logo__brand {
  width: 100%;
  height: auto;
  object-fit: contain;
}

.site-menu-button {
  display: none;
}

.site-nav__list {
  display: flex;
  flex-direction: column;
  gap: 21px;
  margin: 0;
  padding: 0;
  list-style: none;
}

.site-nav__link {
  position: relative;
  display: inline-flex;
  align-items: center;
  min-height: 28px;
  color: var(--color-text);
  font-size: 14px;
  font-weight: var(--font-weight-regular);
  transition: color 160ms ease;
}

.site-nav__link:hover,
.site-nav__link.is-active {
  color: var(--color-primary);
}

/* Layout */
.site-main {
  width: calc(100% - var(--sidebar-width));
  margin-left: var(--sidebar-width);
  padding: var(--space-page-y) var(--space-page-x) 0;
}

.section {
  margin-bottom: 28px;
  scroll-margin-top: 28px;
}

/* Glass Panels */
.glass-panel {
  background: rgba(255, 255, 255, 0.72);
  border: 1px solid rgba(1, 61, 253, 0.14);
  box-shadow: 0 20px 60px rgba(1, 61, 253, 0.08), inset 0 1px 0 rgba(255, 255, 255, 0.8);
  backdrop-filter: blur(18px);
  border-radius: 24px;
}

.section-panel {
  display: grid;
  grid-template-columns: minmax(220px, 20%) minmax(0, 1fr);
  gap: 28px;
  align-items: start;
  min-height: 190px;
  padding: 30px;
}

.section-panel__header {
  display: flex;
  flex-direction: column;
  justify-content: flex-end;
  width: 100%;
  min-height: 0;
  aspect-ratio: 1 / 1;
  padding: 24px 22px;
  overflow: hidden;
  border-radius: 16px;
  background: var(--blue-title-gradient);
  color: #fff;
}

.section-panel__bar {
  display: none;
}

.section-panel__title {
  margin: 0;
  color: #fff;
  font-size: clamp(32px, 3.2vw, 54px);
  font-weight: var(--font-weight-black);
  line-height: 1.05;
}

/* Home Section */
.section--home {
  min-height: calc(100vh - var(--space-page-y));
}

.hero {
  position: relative;
  display: grid;
  grid-template-columns: minmax(0, 1fr) minmax(340px, 1fr);
  gap: 38px;
  min-height: calc(100vh - (var(--space-page-y) * 2));
  padding: 58px 30px 28px 116px;
  overflow: hidden;
}

.hero__dot {
  position: absolute;
  top: 28px;
  left: 30px;
  width: 16px;
  height: 16px;
  background: var(--color-primary);
  border-radius: 2px;
}

.hero__content {
  display: flex;
  flex-direction: column;
  gap: 28px;
  align-self: center;
}

.hero__title {
  display: flex;
  flex-direction: column;
  gap: 18px;
  margin: 0;
  font-size: 76px;
  font-weight: var(--font-weight-extra-bold);
  line-height: 0.95;
}

.hero__subtitle {
  margin: 0;
  color: var(--color-primary);
  font-size: 26px;
  font-weight: var(--font-weight-bold);
  line-height: 1.2;
}

.hero__copy {
  max-width: 430px;
  margin: 0;
  font-size: 16px;
  font-weight: var(--font-weight-regular);
  line-height: 2;
}

.hero__visual {
  display: flex;
  min-height: 360px;
  flex-direction: column;
  justify-content: center;
  padding: 52px 42px;
  overflow: hidden;
  border-radius: var(--radius-card);
  background: var(--color-primary);
}

.hero__visual span {
  color: rgba(255, 255, 255, 0.1);
  font-family: Impact, Haettenschweiler, "Arial Narrow Bold", sans-serif;
  font-size: clamp(132px, 12vw, 260px);
  font-weight: var(--font-weight-regular);
  line-height: 0.86;
}

/* Notice Section */
.notice-list {
  display: flex;
  flex-direction: column;
  justify-content: center;
}

.notice-list__item {
  display: grid;
  grid-template-columns: 122px minmax(0, 1fr) 32px;
  gap: 24px;
  align-items: center;
  min-height: 62px;
  border-bottom: 1px solid rgba(1, 61, 253, 0.13);
  font-weight: var(--font-weight-regular);
}

.notice-list__item:first-child {
  border-top: 0;
}

.notice-list__item:last-child {
  border-bottom: 0;
}

.notice-list__date {
  color: var(--color-primary);
  font-weight: var(--font-weight-regular);
}

.notice-list__title {
  overflow-wrap: anywhere;
  font-weight: var(--font-weight-bold);
}

.notice-list__arrow {
  justify-self: end;
  color: var(--color-primary);
  font-size: 24px;
  font-weight: var(--font-weight-regular);
}

/* Cards */
.card-grid {
  display: grid;
  gap: 18px;
  align-content: stretch;
}

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

.card-grid--four {
  grid-template-columns: repeat(4, minmax(0, 1fr));
}

.activity-card,
.resource-card,
.contact-card {
  min-width: 0;
  border: 1px solid rgba(1, 61, 253, 0.1);
  border-radius: var(--radius-card);
  background: rgba(255, 255, 255, 0.68);
  box-shadow: 0 14px 40px rgba(1, 61, 253, 0.06);
  transition: transform 180ms ease, border-color 180ms ease, box-shadow 180ms ease;
}

.activity-card:hover,
.resource-card:hover,
.contact-card:hover,
.info-item:hover {
  border-color: rgba(1, 61, 253, 0.52);
  box-shadow: 0 18px 50px rgba(1, 61, 253, 0.11);
  transform: translateY(-4px);
}

.activity-card {
  display: block;
  overflow: hidden;
}

.activity-card__image {
  display: grid;
  height: 112px;
  overflow: hidden;
  background:
    linear-gradient(135deg, rgba(1, 61, 253, 0.18), rgba(5, 5, 5, 0.08)),
    repeating-linear-gradient(90deg, rgba(1, 61, 253, 0.12) 0 1px, transparent 1px 18px),
    #f7f9ff;
  place-items: center;
}

.activity-card__image img {
  width: 100%;
  height: 100%;
  object-fit: cover;
}

.activity-card__image img.is-missing {
  display: none;
}

.activity-card__body {
  padding: 16px 16px 18px;
}

.activity-card__date {
  color: var(--color-primary);
  font-size: 13px;
  font-weight: var(--font-weight-regular);
}

.activity-card__title,
.resource-card__title,
.contact-card__title,
.info-item__title {
  margin: 10px 0 9px;
  font-size: 18px;
  font-weight: var(--font-weight-bold);
  line-height: 1.25;
}

.activity-card__description,
.resource-card__description,
.contact-card__main,
.contact-card__sub,
.info-item__description {
  margin: 0;
  color: var(--color-text);
  font-size: 14px;
  font-weight: var(--font-weight-regular);
  line-height: 1.65;
}

.resource-card,
.contact-card {
  padding: 22px 22px 24px;
}

.icon {
  display: inline-flex;
  width: 36px;
  height: 36px;
  color: var(--color-primary);
}

.icon svg {
  width: 100%;
  height: 100%;
}

/* About Section */
.info-grid {
  display: grid;
  grid-template-columns: repeat(4, minmax(0, 1fr));
  align-items: stretch;
}

.info-item {
  min-width: 0;
  padding: 20px 22px;
  border-right: 1px solid rgba(1, 61, 253, 0.14);
  transition: transform 180ms ease, border-color 180ms ease, box-shadow 180ms ease;
}

.info-item:last-child {
  border-right: 0;
}

.info-item__title {
  margin-top: 16px;
}

/* Contact Section */
.contact-card {
  display: grid;
  grid-template-columns: 36px minmax(0, 1fr);
  gap: 14px;
  align-items: start;
  padding-right: 18px;
  padding-left: 18px;
}

.contact-card__title {
  margin-top: 0;
}

.contact-card__main {
  font-size: 13px;
  font-weight: var(--font-weight-regular);
  overflow-wrap: break-word;
}

.contact-card__sub {
  margin-top: 4px;
  color: var(--color-muted);
}

/* Static Content Pages */
.section--page {
  min-height: calc(100vh - var(--space-page-y));
}

.page-panel {
  display: grid;
  grid-template-columns: minmax(260px, 24%) minmax(0, 1fr);
  gap: 34px;
  align-items: start;
  padding: 42px;
}

.page-header {
  display: grid;
  align-content: end;
  width: 100%;
  min-height: 0;
  aspect-ratio: 1 / 1;
  padding: 28px;
  overflow: hidden;
  border-radius: 18px;
  background: var(--blue-title-gradient);
  color: #fff;
}

.page-title {
  margin: 0;
  color: #fff;
  font-size: clamp(36px, 4vw, 64px);
  font-weight: var(--font-weight-black);
  line-height: 1.05;
}

.page-copy {
  margin: 16px 0 0;
  color: rgba(255, 255, 255, 0.86);
  font-size: 16px;
  line-height: 1.75;
}

.page-list {
  display: grid;
  gap: 18px;
}

.notice-entry {
  display: grid;
  gap: 12px;
  padding: 24px 0;
  border-bottom: 1px solid rgba(1, 61, 253, 0.13);
}

.notice-entry--link {
  transition: color 160ms ease, transform 160ms ease;
}

.notice-entry--link:hover {
  color: var(--color-primary);
  transform: translateX(4px);
}

.notice-entry:first-child {
  padding-top: 0;
}

.notice-entry:last-child {
  border-bottom: 0;
  padding-bottom: 0;
}

.notice-entry__date {
  color: var(--color-primary);
  font-size: 14px;
  font-weight: var(--font-weight-bold);
}

.notice-entry__title {
  margin: 0;
  font-size: 22px;
  font-weight: var(--font-weight-bold);
  line-height: 1.35;
}

.notice-entry__body {
  max-width: 760px;
  margin: 0;
  color: var(--color-text);
  font-size: 15px;
  line-height: 1.8;
}

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

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

.resource-card__date {
  display: block;
  margin-top: 16px;
  color: var(--color-primary);
  font-size: 13px;
  font-weight: var(--font-weight-bold);
}

.resource-card__link {
  display: inline-flex;
  margin-top: 14px;
  color: var(--color-primary);
  font-size: 14px;
  font-weight: var(--font-weight-bold);
}

.empty-state {
  margin: 0;
  color: var(--color-muted);
  font-size: 14px;
  line-height: 1.7;
}

/* Post Detail */
.post-panel {
  display: grid;
  gap: 26px;
  padding: 42px;
}

.post-back-link {
  display: inline-flex;
  width: fit-content;
  min-height: 36px;
  align-items: center;
  color: var(--color-primary);
  font-size: 14px;
  font-weight: var(--font-weight-bold);
}

.post-header {
  display: grid;
  gap: 14px;
  max-width: 820px;
}

.post-category {
  display: inline-flex;
  width: fit-content;
  padding: 6px 10px;
  border: 1px solid rgba(1, 61, 253, 0.18);
  border-radius: 6px;
  color: var(--color-primary);
  font-size: 13px;
  font-weight: var(--font-weight-bold);
}

.post-title {
  margin: 0;
  font-size: 42px;
  font-weight: var(--font-weight-extra-bold);
  line-height: 1.18;
}

.post-date {
  color: var(--color-primary);
  font-size: 14px;
  font-weight: var(--font-weight-bold);
}

.post-summary {
  max-width: 760px;
  margin: 0;
  color: var(--color-muted);
  font-size: 16px;
  line-height: 1.75;
}

.post-media {
  margin: 0;
  overflow: hidden;
  border: 1px solid rgba(1, 61, 253, 0.12);
  border-radius: 16px;
  background: #f7f9ff;
}

.post-media img {
  width: 100%;
  max-height: 560px;
  object-fit: contain;
}

.post-media img.is-missing {
  display: none;
}

.post-content {
  max-width: 820px;
  color: var(--color-text);
  font-size: 16px;
  line-height: 1.9;
}

.post-content p {
  margin: 0 0 18px;
}

.post-attachment {
  display: inline-flex;
  width: fit-content;
  min-height: 44px;
  align-items: center;
  padding: 0 18px;
  border-radius: 8px;
  background: var(--color-primary);
  color: #fff;
  font-size: 14px;
  font-weight: var(--font-weight-bold);
}

.post-status {
  display: grid;
  gap: 14px;
  min-height: 320px;
  align-content: center;
}

.post-status h1 {
  margin: 0;
  font-size: 34px;
  font-weight: var(--font-weight-extra-bold);
}

.post-status p {
  margin: 0;
  color: var(--color-muted);
}

/* Footer */
.site-footer {
  display: grid;
  grid-template-columns: 1.25fr 1fr 0.8fr;
  gap: 28px;
  margin-left: var(--sidebar-width);
  margin-top: 32px;
  padding: 26px 48px 30px;
  border-top: 3px solid var(--color-primary);
  background: rgba(255, 255, 255, 0.92);
}

.site-footer strong {
  color: var(--color-primary);
  font-size: 17px;
  font-weight: var(--font-weight-bold);
}

.site-footer address,
.site-footer__copyright,
.site-footer__sns {
  margin: 10px 0 0;
  font-size: 13px;
  font-weight: var(--font-weight-regular);
  line-height: 1.7;
}

.site-footer__copyright {
  align-self: end;
  color: #777;
  text-align: center;
}

.site-footer__sns {
  justify-self: end;
}

.site-footer__sns ul {
  display: flex;
  gap: 18px;
  margin: 12px 0 0;
  padding: 0;
  list-style: none;
}

.site-footer__sns a {
  color: var(--color-primary);
  font-weight: var(--font-weight-regular);
}

.back-to-top {
  position: fixed;
  right: 28px;
  bottom: 28px;
  z-index: 60;
  display: inline-grid;
  width: 44px;
  height: 44px;
  border: 0;
  border-radius: 6px;
  background: var(--color-primary);
  color: #fff;
  cursor: pointer;
  font-size: 22px;
  font-weight: var(--font-weight-regular);
  place-items: center;
  transition: transform 160ms ease, box-shadow 160ms ease;
}

.back-to-top:hover {
  box-shadow: 0 12px 28px rgba(1, 61, 253, 0.22);
  transform: translateY(-2px);
}

/* Responsive */
@media (max-width: 1040px) {
  :root {
    --sidebar-width: 170px;
    --space-page-x: 22px;
  }

  .site-sidebar {
    gap: 46px;
    padding: 30px 20px;
  }

  .site-logo {
    width: 130px;
  }

  .site-main {
    margin-left: var(--sidebar-width);
  }

  .hero {
    grid-template-columns: 1fr;
    padding: 56px 28px 30px 64px;
  }

  .hero__title {
    font-size: 64px;
  }

  .hero__visual {
    min-height: 250px;
  }

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

  .info-item {
    border-right: 0;
    border-bottom: 1px solid rgba(1, 61, 253, 0.14);
  }

  .info-item:nth-last-child(-n + 2) {
    border-bottom: 0;
  }
}

@media (max-width: 760px) {
  :root {
    --space-page-x: 24px;
  }

  body {
    background-size: 120px 100%;
  }

  .site-sidebar {
    inset: 0 0 auto 0;
    display: grid;
    width: 100%;
    min-height: 82px;
    height: auto;
    grid-template-columns: minmax(0, 1fr) 44px;
    gap: 16px;
    align-items: center;
    padding: 17px var(--space-page-x);
    border-right: 0;
    border-bottom: 1px solid rgba(1, 61, 253, 0.14);
    background: rgba(255, 255, 255, 0.92);
    box-shadow: 0 12px 30px rgba(1, 61, 253, 0.05);
  }

  .site-logo {
    width: 104px;
  }

  .site-menu-button {
    display: inline-flex;
    width: 44px;
    height: 44px;
    flex-direction: column;
    justify-content: center;
    gap: 6px;
    padding: 0 7px;
    border: 0;
    background: transparent;
    color: var(--color-text);
    cursor: pointer;
  }

  .site-menu-button span {
    display: block;
    width: 100%;
    height: 2px;
    background: currentColor;
  }

  .site-nav {
    position: absolute;
    top: calc(100% + 10px);
    right: var(--space-page-x);
    left: var(--space-page-x);
    display: none;
    padding: 18px;
    border: 1px solid rgba(1, 61, 253, 0.12);
    border-radius: 18px;
    background: rgba(255, 255, 255, 0.96);
    box-shadow: 0 18px 44px rgba(1, 61, 253, 0.12);
  }

  .site-nav.is-open {
    display: block;
  }

  .site-nav__list {
    gap: 14px;
  }

  .site-nav__link {
    min-height: 32px;
    font-size: 15px;
  }

  .site-main {
    width: 100%;
    max-width: 480px;
    margin-left: 0;
    margin-right: auto;
    margin-left: auto;
    padding: 112px var(--space-page-x) 0;
  }

  .section {
    margin-bottom: 44px;
    scroll-margin-top: 108px;
  }

  .section--home {
    min-height: auto;
  }

  .glass-panel {
    border-color: rgba(1, 61, 253, 0.1);
    border-radius: 20px;
    background: rgba(255, 255, 255, 0.78);
    box-shadow: 0 16px 44px rgba(1, 61, 253, 0.07);
  }

  .hero {
    grid-template-columns: 1fr;
    min-height: auto;
    gap: 0;
    padding: 34px 30px 32px;
  }

  .hero__dot {
    display: none;
  }

  .hero__content {
    gap: 20px;
  }

  .hero__title {
    gap: 12px;
    font-size: 52px;
    line-height: 0.9;
  }

  .hero__subtitle {
    font-size: 20px;
    line-height: 1.35;
  }

  .hero__copy {
    max-width: none;
    font-size: 13px;
    line-height: 1.9;
  }

  .hero__visual {
    display: none;
  }

  .section-panel {
    display: block;
    min-height: 0;
    padding: 28px;
  }

  .section-panel__title {
    font-size: clamp(30px, 12vw, 42px);
    line-height: 1.05;
  }

  .section-panel__header {
    margin-bottom: 24px;
    padding: 22px;
  }

  .section-panel__bar {
    display: none;
  }

  .notice-list {
    display: block;
  }

  .notice-list__item {
    grid-template-columns: minmax(0, 1fr) 28px;
    gap: 9px 12px;
    min-height: 0;
    padding: 18px 0;
  }

  .notice-list__date {
    grid-column: 1;
    color: var(--color-primary);
    font-size: 13px;
    font-weight: var(--font-weight-bold);
  }

  .notice-list__title {
    grid-column: 1;
    font-size: 14px;
    font-weight: var(--font-weight-regular);
    line-height: 1.55;
  }

  .notice-list__arrow {
    grid-row: 1 / 3;
    grid-column: 2;
    align-self: center;
    font-size: 24px;
    line-height: 1;
  }

  .card-grid--three,
  .info-grid {
    grid-template-columns: 1fr;
  }

  .card-grid--four {
    grid-template-columns: repeat(2, minmax(0, 1fr));
    gap: 14px;
  }

  .activity-card {
    display: grid;
    grid-template-columns: 128px minmax(0, 1fr);
    gap: 16px;
    align-items: start;
    border: 0;
    background: transparent;
    box-shadow: none;
  }

  .activity-card:hover,
  .resource-card:hover,
  .contact-card:hover,
  .info-item:hover {
    border-color: rgba(1, 61, 253, 0.1);
    box-shadow: none;
    transform: none;
  }

  .activity-card__image {
    width: 128px;
    height: 82px;
    border-radius: 8px;
  }

  .activity-card__body {
    padding: 0;
  }

  .activity-card__date {
    font-size: 12px;
    font-weight: var(--font-weight-bold);
  }

  .activity-card__title {
    margin: 8px 0 8px;
    font-size: 16px;
    line-height: 1.35;
  }

  .activity-card__description {
    font-size: 13px;
    line-height: 1.65;
  }

  .resource-card {
    min-height: 158px;
    padding: 18px 16px;
    border-radius: 10px;
    background: rgba(255, 255, 255, 0.84);
    box-shadow: 0 10px 24px rgba(1, 61, 253, 0.06);
  }

  .resource-card .icon {
    width: 30px;
    height: 30px;
  }

  .resource-card__title {
    margin: 14px 0 8px;
    font-size: 15px;
  }

  .resource-card__description {
    font-size: 12px;
    line-height: 1.7;
  }

  .info-grid {
    display: block;
  }

  .info-item,
  .info-item:nth-last-child(-n + 2) {
    display: grid;
    grid-template-columns: 56px minmax(0, 1fr);
    gap: 22px;
    align-items: start;
    padding: 26px 0;
    border-right: 0;
    border-bottom: 1px solid rgba(1, 61, 253, 0.12);
  }

  .info-item:first-child {
    padding-top: 0;
  }

  .info-item:last-child {
    border-bottom: 0;
    padding-bottom: 0;
  }

  .info-item .icon {
    width: 44px;
    height: 44px;
    margin-top: 2px;
  }

  .info-item__title {
    margin: 0 0 9px;
    font-size: 17px;
  }

  .info-item__description {
    font-size: 13px;
    line-height: 1.75;
  }

  .contact-card {
    grid-template-columns: 44px minmax(0, 1fr);
    gap: 18px;
    padding: 24px;
    border-radius: 12px;
    background: rgba(255, 255, 255, 0.88);
    box-shadow: 0 10px 24px rgba(1, 61, 253, 0.06);
  }

  .contact-card .icon {
    width: 40px;
    height: 40px;
  }

  .contact-card__title {
    font-size: 16px;
  }

  .contact-card__main,
  .contact-card__sub {
    font-size: 13px;
    line-height: 1.65;
  }

  .section--page {
    min-height: auto;
  }

  .page-panel {
    grid-template-columns: 1fr;
    gap: 24px;
    padding: 28px;
  }

  .page-header {
    padding: 24px;
  }

  .page-title {
    font-size: clamp(34px, 13vw, 48px);
    line-height: 1.05;
  }

  .page-copy {
    font-size: 13px;
    line-height: 1.75;
  }

  .notice-entry {
    gap: 10px;
    padding: 22px 0;
  }

  .notice-entry__date {
    font-size: 13px;
  }

  .notice-entry__title {
    font-size: 18px;
  }

  .notice-entry__body {
    font-size: 13px;
    line-height: 1.75;
  }

  .activity-page-grid {
    grid-template-columns: 1fr;
  }

  .resources-page-grid {
    grid-template-columns: repeat(2, minmax(0, 1fr));
    gap: 14px;
  }

  .resource-card__link {
    font-size: 13px;
  }

  .post-panel {
    gap: 22px;
    padding: 28px;
  }

  .post-title {
    font-size: 28px;
    line-height: 1.25;
  }

  .post-summary,
  .post-content {
    font-size: 13px;
    line-height: 1.8;
  }

  .post-media {
    border-radius: 12px;
  }

  .post-attachment {
    width: 100%;
    justify-content: center;
  }

  .site-footer {
    width: calc(100% - (var(--space-page-x) * 2));
    max-width: 480px;
    grid-template-columns: 1fr;
    gap: 18px;
    margin: 0 auto 24px;
    padding: 28px 24px 84px;
    border: 1px solid rgba(1, 61, 253, 0.1);
    border-radius: 20px;
    background: rgba(255, 255, 255, 0.78);
    box-shadow: 0 16px 44px rgba(1, 61, 253, 0.07);
  }

  .site-footer strong {
    font-size: 17px;
  }

  .site-footer address,
  .site-footer__copyright,
  .site-footer__sns {
    font-size: 13px;
    line-height: 1.65;
  }

  .site-footer__copyright {
    padding-top: 18px;
    border-top: 1px solid rgba(1, 61, 253, 0.12);
    text-align: left;
  }

  .site-footer__sns {
    justify-self: start;
  }

  .site-footer__sns ul {
    flex-wrap: wrap;
    gap: 16px;
  }

  .site-footer__sns a {
    display: inline-grid;
    width: 28px;
    height: 28px;
    overflow: hidden;
    color: var(--color-primary);
    font-size: 0;
    font-weight: var(--font-weight-bold);
    place-items: center;
  }

  .site-footer__sns li:nth-child(1) a::before {
    font-size: 22px;
    content: "◎";
  }

  .site-footer__sns li:nth-child(2) a::before {
    font-size: 22px;
    content: "f";
  }

  .site-footer__sns li:nth-child(3) a::before {
    font-size: 18px;
    content: "▶";
  }

  .back-to-top {
    right: 24px;
    bottom: 24px;
    width: 48px;
    height: 48px;
    border-radius: 8px;
  }
}

@media (prefers-reduced-motion: reduce) {
  html {
    scroll-behavior: auto;
  }

  *,
  *::before,
  *::after {
    animation-duration: 0.01ms !important;
    animation-iteration-count: 1 !important;
    scroll-behavior: auto !important;
    transition-duration: 0.01ms !important;
  }
}