:root {
  color-scheme: dark;
  --bg: #0d0f11;
  --surface: #15191c;
  --surface-strong: #1b2024;
  --border: #30363b;
  --border-soft: #242a2e;
  --text: #f2f4f5;
  --muted: #a4adb3;
  --green: #55d6aa;
  --green-dark: #153e33;
  --amber: #f4bd5b;
  --cyan: #6dbbd3;
  --danger: #ff7777;
  --shadow: 0 12px 32px rgba(0, 0, 0, 0.26);
}

* {
  box-sizing: border-box;
}

.sr-only {
  position: absolute;
  width: 1px;
  height: 1px;
  padding: 0;
  margin: -1px;
  overflow: hidden;
  clip: rect(0, 0, 0, 0);
  white-space: nowrap;
  border: 0;
}

html {
  scroll-behavior: smooth;
}

body {
  margin: 0;
  min-width: 320px;
  background: var(--bg);
  color: var(--text);
  font-family: Inter, "Noto Sans JP", "Yu Gothic UI", Meiryo, sans-serif;
  line-height: 1.65;
  letter-spacing: 0;
}

a {
  color: inherit;
}

button,
input,
select {
  font: inherit;
  letter-spacing: 0;
}

button,
a {
  -webkit-tap-highlight-color: transparent;
}

.site-header {
  position: sticky;
  top: 0;
  z-index: 20;
  border-bottom: 1px solid var(--border-soft);
  background: rgba(13, 15, 17, 0.96);
  backdrop-filter: blur(12px);
}

.header-inner,
.page-shell,
.footer-inner {
  width: min(1180px, calc(100% - 40px));
  margin: 0 auto;
}

.header-inner {
  min-height: 68px;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 24px;
}

.brand {
  display: inline-flex;
  align-items: center;
  gap: 11px;
  text-decoration: none;
}

.brand-mark {
  width: 40px;
  height: 40px;
  display: grid;
  place-items: center;
  border: 1px solid #397a68;
  border-radius: 7px;
  background: #10221d;
  color: var(--green);
  font-weight: 800;
  font-size: 0.82rem;
}

.brand-copy {
  display: grid;
  line-height: 1.2;
}

.brand-copy strong {
  font-size: 1rem;
}

.brand-copy small {
  color: var(--muted);
  font-size: 0.72rem;
}

.site-nav {
  display: flex;
  align-items: center;
  gap: 20px;
  font-size: 0.9rem;
}

.site-nav a {
  color: #c5cbd0;
  text-decoration-color: #4b555c;
  text-underline-offset: 5px;
}

.site-nav a:hover,
.site-nav a:focus-visible {
  color: var(--green);
}

.page-shell {
  padding: 44px 0 80px;
}

.library-head {
  display: grid;
  grid-template-columns: minmax(0, 1fr) auto;
  gap: 28px;
  align-items: end;
  padding-bottom: 28px;
  border-bottom: 1px solid var(--border);
}

.eyebrow {
  margin: 0 0 8px;
  color: var(--green);
  font-size: 0.76rem;
  font-weight: 800;
  text-transform: uppercase;
}

h1,
h2,
h3,
p {
  margin-top: 0;
}

.library-head h1,
.detail-head h1,
.legal-title h1 {
  margin-bottom: 10px;
  font-size: clamp(2rem, 5vw, 3.35rem);
  line-height: 1.15;
}

.library-head p:last-child,
.detail-head > div > p:last-child,
.legal-title > p:last-child {
  margin-bottom: 0;
  color: var(--muted);
}

.library-count {
  min-width: 126px;
  padding: 14px 16px;
  border-left: 3px solid var(--amber);
}

.library-count strong,
.library-count span {
  display: block;
}

.library-count strong {
  font-size: 1.8rem;
  line-height: 1.2;
}

.library-count span {
  color: var(--muted);
  font-size: 0.8rem;
}

.search-area {
  padding: 28px 0 22px;
}

.search-label {
  display: block;
  margin-bottom: 8px;
  font-size: 0.86rem;
  font-weight: 700;
}

.search-box {
  position: relative;
}

.search-box input {
  width: 100%;
  min-height: 58px;
  padding: 0 112px 0 48px;
  border: 1px solid #495158;
  border-radius: 7px;
  outline: none;
  background: #111416;
  color: var(--text);
  font-size: 1rem;
}

.search-box input:focus {
  border-color: var(--green);
  box-shadow: 0 0 0 3px rgba(85, 214, 170, 0.13);
}

.search-symbol {
  position: absolute;
  left: 17px;
  top: 50%;
  transform: translateY(-50%);
  color: var(--muted);
  font-size: 1.15rem;
}

.clear-search {
  position: absolute;
  right: 9px;
  top: 9px;
  min-width: 88px;
  height: 40px;
  border: 1px solid var(--border);
  border-radius: 6px;
  background: var(--surface-strong);
  color: #d9dddf;
  cursor: pointer;
}

.clear-search:hover,
.clear-search:focus-visible {
  border-color: var(--green);
  color: var(--green);
}

.suggestions {
  display: flex;
  flex-wrap: wrap;
  gap: 8px;
  margin-top: 11px;
}

.suggestions button {
  border: 0;
  padding: 4px 0;
  background: transparent;
  color: #9daab0;
  cursor: pointer;
  text-decoration: underline;
  text-decoration-color: #3a444a;
  text-underline-offset: 4px;
}

.suggestions button:hover,
.suggestions button:focus-visible {
  color: var(--amber);
}

.category-section {
  padding: 4px 0 28px;
}

.section-heading {
  display: flex;
  align-items: baseline;
  justify-content: space-between;
  gap: 20px;
  margin-bottom: 12px;
}

.section-heading h2 {
  margin-bottom: 0;
  font-size: 1.08rem;
}

.section-heading a {
  color: var(--muted);
  font-size: 0.84rem;
}

.category-grid {
  display: grid;
  grid-template-columns: repeat(4, minmax(0, 1fr));
  gap: 8px;
}

.category-button {
  min-height: 76px;
  display: grid;
  grid-template-columns: 36px 1fr;
  gap: 9px;
  align-items: center;
  padding: 10px 12px;
  border: 1px solid var(--border);
  border-radius: 7px;
  background: var(--surface);
  color: var(--text);
  text-align: left;
  text-decoration: none;
  cursor: pointer;
}

.category-button:hover,
.category-button:focus-visible,
.category-button.is-active {
  border-color: #4d907c;
  background: #13251f;
}

.category-button.is-active {
  box-shadow: inset 3px 0 0 var(--green);
}

.category-icon {
  width: 34px;
  height: 34px;
  display: grid;
  place-items: center;
  border-radius: 6px;
  background: #23292d;
  color: var(--cyan);
  font-size: 1.05rem;
  font-weight: 800;
}

.category-button strong,
.category-button small {
  display: block;
}

.category-button strong {
  font-size: 0.9rem;
}

.category-button small {
  margin-top: 2px;
  color: var(--muted);
  font-size: 0.73rem;
}

.results-section {
  scroll-margin-top: 92px;
}

.results-toolbar {
  min-height: 58px;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 18px;
  padding: 10px 0;
  border-top: 1px solid var(--border);
  border-bottom: 1px solid var(--border);
}

.results-count {
  margin: 0;
  font-weight: 700;
}

.results-count span {
  color: var(--green);
}

.toolbar-controls {
  display: flex;
  gap: 8px;
}

.toolbar-controls select,
.favorite-filter {
  min-height: 40px;
  border: 1px solid var(--border);
  border-radius: 6px;
  background: var(--surface);
  color: var(--text);
}

.toolbar-controls select {
  padding: 0 34px 0 11px;
}

.favorite-filter {
  padding: 0 12px;
  cursor: pointer;
}

.favorite-filter.is-active {
  border-color: var(--amber);
  color: var(--amber);
}

.sound-list {
  display: grid;
  gap: 8px;
  padding-top: 14px;
}

.sound-item {
  min-height: 98px;
  display: grid;
  grid-template-columns: 46px 58px minmax(0, 1fr) auto;
  gap: 14px;
  align-items: center;
  padding: 12px 14px;
  border: 1px solid var(--border-soft);
  border-radius: 7px;
  background: var(--surface);
}

.sound-item:hover {
  border-color: #3f494f;
  background: #181d20;
}

.play-button,
.favorite-button,
.icon-button {
  display: grid;
  place-items: center;
  border: 1px solid var(--border);
  background: #20262a;
  color: var(--text);
  cursor: pointer;
}

.play-button {
  width: 46px;
  height: 46px;
  border-radius: 50%;
  color: var(--green);
  font-size: 1rem;
}

.play-button:hover,
.play-button:focus-visible,
.play-button.is-playing {
  border-color: var(--green);
  background: var(--green-dark);
}

.sound-thumb {
  width: 58px;
  height: 58px;
  border-radius: 6px;
  object-fit: cover;
  background: #20262a;
}

.sound-main {
  min-width: 0;
}

.sound-meta,
.sound-actions {
  display: flex;
  align-items: center;
  flex-wrap: wrap;
  gap: 7px;
}

.sound-meta {
  margin-bottom: 4px;
  color: var(--muted);
  font-size: 0.72rem;
}

.sound-category {
  color: var(--cyan);
  font-weight: 700;
}

.recording-badge {
  display: inline-flex;
  align-items: center;
  min-height: 22px;
  padding: 2px 7px;
  border: 1px solid #3aa882;
  border-radius: 4px;
  color: #14654d;
  background: #e9f8f2;
  font-size: 0.72rem;
  font-weight: 700;
  line-height: 1;
  white-space: nowrap;
}

.sound-main h3 {
  margin: 0 0 4px;
  overflow-wrap: anywhere;
  font-size: 1rem;
  line-height: 1.35;
}

.sound-main h3 a {
  text-decoration: none;
}

.sound-main h3 a:hover,
.sound-main h3 a:focus-visible {
  color: var(--green);
}

.sound-tags {
  margin: 0;
  overflow: hidden;
  color: #aeb6ba;
  font-size: 0.78rem;
  text-overflow: ellipsis;
  white-space: nowrap;
}

.sound-actions {
  justify-content: flex-end;
}

.favorite-button {
  width: 40px;
  height: 40px;
  border-radius: 6px;
  color: #b8c0c4;
  font-size: 1.1rem;
}

.favorite-button.is-active {
  border-color: var(--amber);
  color: var(--amber);
}

.download-button,
.primary-link,
.secondary-link {
  min-height: 40px;
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 7px;
  padding: 0 14px;
  border-radius: 6px;
  font-weight: 800;
  text-decoration: none;
}

.download-button,
.primary-link {
  background: var(--amber);
  color: #17130a;
}

.download-button:hover,
.download-button:focus-visible,
.primary-link:hover,
.primary-link:focus-visible {
  background: #ffd27c;
}

.secondary-link {
  border: 1px solid var(--border);
  color: var(--text);
}

.secondary-link:hover,
.secondary-link:focus-visible {
  border-color: var(--green);
  color: var(--green);
}

.load-more {
  width: 100%;
  min-height: 48px;
  margin-top: 14px;
  border: 1px solid var(--border);
  border-radius: 6px;
  background: var(--surface);
  color: var(--text);
  font-weight: 700;
  cursor: pointer;
}

.load-more:hover,
.load-more:focus-visible {
  border-color: var(--green);
}

.empty-state {
  padding: 48px 20px;
  border-bottom: 1px solid var(--border);
  color: var(--muted);
  text-align: center;
}

.parent-site-band {
  margin-top: 50px;
  padding: 28px 0;
  border-top: 1px solid var(--border);
  border-bottom: 1px solid var(--border);
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 28px;
}

.parent-site-band h2 {
  margin-bottom: 6px;
  font-size: 1.35rem;
}

.parent-site-band p {
  max-width: 720px;
  margin: 0;
  color: var(--muted);
}

.use-count {
  display: flex;
  align-items: baseline;
  gap: 8px;
  margin-top: 18px;
}

.use-count strong {
  color: var(--green);
  font-size: 2rem;
}

.use-count span {
  color: var(--muted);
  font-size: 0.86rem;
}

.use-sound-grid {
  display: grid;
  gap: 8px;
  padding-top: 30px;
}

.use-sound-card {
  min-height: 112px;
  display: grid;
  grid-template-columns: minmax(0, 1fr) minmax(300px, 0.65fr);
  align-items: center;
  gap: 24px;
  padding: 16px 18px;
  border: 1px solid var(--border);
  border-radius: 7px;
  background: var(--surface);
}

.use-sound-card span,
.use-sound-card p {
  color: var(--muted);
  font-size: 0.78rem;
}

.use-sound-card h2 {
  margin: 4px 0;
  font-size: 1rem;
}

.use-sound-card h2 a {
  text-decoration: none;
}

.use-sound-card h2 a:hover,
.use-sound-card h2 a:focus-visible {
  color: var(--green);
}

.use-sound-card p {
  margin: 0;
}

.use-card-actions {
  display: grid;
  grid-template-columns: minmax(160px, 1fr) auto;
  align-items: center;
  gap: 10px;
}

.use-card-actions audio {
  width: 100%;
  height: 40px;
}

.legal-section summary {
  cursor: pointer;
  font-weight: 800;
}

.editorial-band {
  display: grid;
  grid-template-columns: repeat(3, minmax(0, 1fr));
  gap: 28px;
  margin-top: 54px;
  padding: 34px 0;
  border-top: 1px solid var(--border);
  border-bottom: 1px solid var(--border);
}

.editorial-band h2,
.editorial-band h3 {
  margin-bottom: 8px;
  font-size: 1rem;
}

.editorial-band p {
  margin-bottom: 0;
  color: var(--muted);
  font-size: 0.86rem;
}

.site-footer {
  border-top: 1px solid var(--border-soft);
}

.footer-inner {
  min-height: 90px;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 24px;
  color: var(--muted);
  font-size: 0.82rem;
}

.footer-links {
  display: flex;
  flex-wrap: wrap;
  gap: 16px;
}

.detail-head,
.legal-title {
  padding-bottom: 30px;
  border-bottom: 1px solid var(--border);
}

.detail-grid {
  display: grid;
  grid-template-columns: minmax(0, 1.45fr) minmax(280px, 0.55fr);
  gap: 36px;
  padding-top: 32px;
}

.player-panel,
.detail-aside,
.legal-section {
  border: 1px solid var(--border);
  border-radius: 7px;
  background: var(--surface);
}

.player-panel,
.detail-aside {
  padding: 22px;
}

.player-panel audio {
  width: 100%;
  margin: 12px 0 18px;
}

.detail-actions {
  display: flex;
  flex-wrap: wrap;
  gap: 9px;
}

.detail-aside dl {
  margin: 0;
}

.detail-aside div {
  display: grid;
  grid-template-columns: 90px 1fr;
  gap: 12px;
  padding: 11px 0;
  border-bottom: 1px solid var(--border-soft);
}

.detail-aside div:last-child {
  border-bottom: 0;
}

.detail-aside dt {
  color: var(--muted);
}

.detail-aside dd {
  margin: 0;
}

.tag-list {
  display: flex;
  flex-wrap: wrap;
  gap: 7px;
  margin-top: 16px;
}

.tag-list span {
  padding: 3px 8px;
  border: 1px solid var(--border);
  border-radius: 4px;
  color: #b7c1c6;
  font-size: 0.75rem;
}

.related-section {
  margin-top: 48px;
}

.related-grid {
  display: grid;
  grid-template-columns: repeat(3, minmax(0, 1fr));
  gap: 8px;
}

.related-item {
  padding: 14px;
  border: 1px solid var(--border);
  border-radius: 7px;
  background: var(--surface);
  text-decoration: none;
}

.related-item:hover,
.related-item:focus-visible {
  border-color: var(--green);
}

.related-item strong,
.related-item small {
  display: block;
}

.related-item small {
  margin-top: 5px;
  color: var(--muted);
}

.legal-stack {
  display: grid;
  gap: 16px;
  padding-top: 28px;
}

.legal-section {
  padding: 22px;
}

.legal-section h2 {
  margin-bottom: 10px;
  font-size: 1.08rem;
}

.legal-section p:last-child,
.legal-section ul:last-child {
  margin-bottom: 0;
}

.legal-section p,
.legal-section li {
  color: #bdc4c8;
}

.credit-box {
  padding: 14px;
  border-left: 3px solid var(--green);
  background: #101512;
  color: #dce6e2;
  overflow-wrap: anywhere;
}

.breadcrumbs {
  margin-bottom: 18px;
  color: var(--muted);
  font-size: 0.8rem;
}

.breadcrumbs a {
  text-underline-offset: 4px;
}

@media (max-width: 900px) {
  .category-grid {
    grid-template-columns: repeat(2, minmax(0, 1fr));
  }

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

  .related-grid,
  .editorial-band {
    grid-template-columns: 1fr;
  }

  .use-sound-card {
    grid-template-columns: 1fr;
  }
}

@media (max-width: 640px) {
  .header-inner,
  .page-shell,
  .footer-inner {
    width: min(100% - 24px, 1180px);
  }

  .site-nav a:first-child {
    display: none;
  }

  .page-shell {
    padding-top: 28px;
  }

  .parent-site-band {
    align-items: flex-start;
    flex-direction: column;
  }

  .use-card-actions {
    grid-template-columns: 1fr;
  }

  .library-head {
    grid-template-columns: 1fr;
    gap: 16px;
  }

  .library-head h1,
  .detail-head h1,
  .legal-title h1 {
    font-size: 2rem;
  }

  .library-count {
    min-width: 0;
  }

  .search-box input {
    padding-right: 64px;
  }

  .clear-search {
    min-width: 44px;
    font-size: 0;
  }

  .clear-search::after {
    content: "×";
    font-size: 1.2rem;
  }

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

  .category-button {
    min-height: 64px;
  }

  .results-toolbar,
  .footer-inner {
    align-items: stretch;
    flex-direction: column;
  }

  .toolbar-controls {
    width: 100%;
  }

  .toolbar-controls select,
  .favorite-filter {
    flex: 1;
    min-width: 0;
  }

  .sound-item {
    grid-template-columns: 46px minmax(0, 1fr);
    gap: 10px;
  }

  .sound-thumb {
    display: none;
  }

  .sound-actions {
    grid-column: 1 / -1;
    justify-content: stretch;
  }

  .sound-actions .download-button {
    flex: 1;
  }

  .sound-tags {
    white-space: normal;
  }

  .detail-actions > * {
    width: 100%;
  }
}

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