:root {
  --background: #0a0b0f;
  --surface: #13151c;
  --surface-hover: #191c25;
  --border: rgb(255 255 255 / 12%);
  --border-hover: rgb(255 255 255 / 30%);
  --text: #f4f2ed;
  --muted: #989ba5;
  --accent: #d7ff62;
  color-scheme: dark;
}

body {
  min-width: 320px;
  margin: 0;
  background: var(--background);
  color: var(--text);
  font-family: "DM Sans", "Noto Sans JP", sans-serif;
  -webkit-font-smoothing: antialiased;
}

body::before {
  content: "";
  position: fixed;
  top: -26rem;
  left: 50%;
  z-index: -1;
  width: 50rem;
  height: 50rem;
  border-radius: 50%;
  background: rgb(100 113 255 / 10%);
  pointer-events: none;
  filter: blur(150px);
  transform: translateX(-50%);
}

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

.site-header {
  height: 76px;
  border-bottom: 1px solid var(--border);
}

.brand {
  font-size: 15px;
  font-weight: 600;
  letter-spacing: 0.04em;
}

.site-header nav a {
  color: var(--muted);
  font-size: 13px;
  transition: color 0.2s;
}

.site-header nav a:hover {
  color: var(--text);
}

.page-nav {
  padding: 26px 0;
  border-bottom: 1px solid var(--border);
}

.breadcrumb {
  --bs-breadcrumb-divider: "›";
  --bs-breadcrumb-item-active-color: var(--muted);
  font-size: 12px;
}

.breadcrumb-item + .breadcrumb-item::before {
  color: #626570;
}

.breadcrumb a {
  color: var(--muted);
}

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

.page-heading {
  padding: 84px 0 60px;
}

.page-heading h1,
.item-heading h1 {
  margin: 0;
  font-size: clamp(36px, 6vw, 64px);
  font-weight: 500;
  letter-spacing: -0.05em;
}

.work-grid {
  max-width: 980px;
  margin: 0 auto;
  padding-bottom: 100px;
}

.work-card {
  position: relative;
  overflow: hidden;
  border: 1px solid var(--border);
  border-radius: 4px;
  background: var(--surface);
  transition: border-color 0.25s, transform 0.25s;
}

.work-card img {
  width: 100%;
  aspect-ratio: 1 / 1;
  object-fit: cover;
  transition: transform 0.5s, filter 0.25s;
}

.work-card > span {
  position: absolute;
  right: 14px;
  bottom: 14px;
  display: grid;
  width: 38px;
  height: 38px;
  place-items: center;
  border: 1px solid var(--border);
  border-radius: 50%;
  background: rgb(10 11 15 / 78%);
  color: var(--accent);
  backdrop-filter: blur(8px);
}

.work-card:hover {
  border-color: var(--border-hover);
  transform: translateY(-4px);
}

.work-card:hover img {
  filter: brightness(1.08);
  transform: scale(1.025);
}

.item-heading {
  padding: 76px 0 64px;
}

.guideline {
  max-width: 760px;
  margin-top: 26px;
  padding: 14px 18px;
  border: 1px solid var(--border);
  border-radius: 4px;
  color: var(--muted);
  font-size: 12px;
  line-height: 1.7;
  transition: border-color 0.2s, color 0.2s;
}

.guideline:hover {
  border-color: var(--border-hover);
  color: var(--text);
}

.gallery-grid {
  max-width: 1120px;
  margin: 0 auto;
  padding-bottom: 100px;
}

.gallery-image {
  display: grid;
  min-height: 100%;
  place-items: center;
  overflow: hidden;
  border: 1px solid var(--border);
  border-radius: 4px;
  background: var(--surface);
}

.gallery-image img {
  width: 100%;
  max-height: 88vh;
  object-fit: contain;
}

.event-section {
  max-width: 1080px;
  margin: 0 auto 64px;
}

.event-section:last-child {
  padding-bottom: 60px;
}

.event-tabs {
  gap: 28px;
  margin-bottom: 18px;
  border-bottom: 1px solid var(--border);
}

.event-tabs .nav-link {
  position: relative;
  padding: 0 0 14px;
  border: 0;
  border-radius: 0;
  background: transparent;
  color: var(--muted);
  font-size: 13px;
  font-weight: 500;
  letter-spacing: 0.12em;
  transition: color 0.2s;
}

.event-tabs .nav-link::after {
  content: "";
  position: absolute;
  right: 0;
  bottom: -1px;
  left: 0;
  height: 2px;
  background: transparent;
  transition: background-color 0.2s;
}

.event-tabs .nav-link:hover,
.event-tabs .nav-link:focus-visible,
.event-tabs .nav-link.active {
  color: var(--text);
}

.event-tabs .nav-link.active::after {
  background: var(--accent);
}

.event-tabs .nav-link:focus-visible {
  outline: 2px solid var(--accent);
  outline-offset: 4px;
}

.event-table-wrap {
  overflow: hidden;
  border: 1px solid var(--border);
  border-radius: 4px;
}

.event-table-wrap .table {
  --bs-table-bg: transparent;
  --bs-table-color: var(--text);
  --bs-table-border-color: var(--border);
  --bs-table-hover-bg: var(--surface-hover);
  --bs-table-hover-color: var(--text);
}

.event-table-wrap th,
.event-table-wrap td {
  min-width: 130px;
  padding: 20px 22px;
  font-weight: 400;
}

.event-table-wrap thead th {
  border-bottom-width: 1px;
  color: var(--muted);
  font-size: 11px;
  font-weight: 500;
  letter-spacing: 0.08em;
}

.event-table-wrap tbody th {
  color: var(--accent);
  font-size: 13px;
  white-space: nowrap;
}

.portfolio-link {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  color: inherit;
  text-decoration-color: var(--border);
  text-underline-offset: 4px;
  transition: color 0.2s ease, text-decoration-color 0.2s ease;
}

.portfolio-link span {
  color: var(--accent);
  transition: transform 0.2s ease;
}

.portfolio-link:hover,
.portfolio-link:focus-visible {
  color: var(--accent);
  text-decoration-color: currentColor;
}

.portfolio-link:hover span,
.portfolio-link:focus-visible span {
  transform: translateX(3px);
}

.portfolio-link:focus-visible {
  outline: 2px solid var(--accent);
  outline-offset: 4px;
}

@media (max-width: 575px) {
  .site-header {
    height: 64px;
  }

  .page-heading {
    padding: 60px 0 42px;
  }

  .item-heading {
    padding: 56px 0 46px;
  }

  .work-grid,
  .gallery-grid {
    padding-bottom: 72px;
  }

  .event-table-wrap th,
  .event-table-wrap td {
    padding: 16px;
  }
}

@media (prefers-reduced-motion: reduce) {
  *,
  *::before,
  *::after {
    transition: none !important;
  }
}