:root {
  --ink: #111111;
  --paper: #f2f0ea;
  --white: #ffffff;
  /* 白文字とのコントラスト比 4.74:1 = WCAG AA 適合 */
  --signal: #d8341f;
  --line: rgba(17, 17, 17, 0.22);
  --line-dark: rgba(255, 255, 255, 0.24);
  --page-padding: clamp(1.25rem, 4vw, 4.5rem);
  --section-gap: clamp(6rem, 12vw, 11rem);
  --radius: 0;
  --font-sans: "Helvetica Neue", Helvetica, Arial, "Hiragino Kaku Gothic ProN", "Yu Gothic", YuGothic, sans-serif;
}

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

html {
  scroll-behavior: smooth;
  scroll-padding-top: 5rem;
}

body {
  margin: 0;
  color: var(--ink);
  background: var(--paper);
  font-family: var(--font-sans);
  font-size: 16px;
  line-height: 1.65;
  -webkit-font-smoothing: antialiased;
}

body.menu-open {
  overflow: hidden;
}

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

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

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

button,
input,
textarea,
select {
  font: inherit;
}

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

.skip-link {
  position: fixed;
  top: 0.75rem;
  left: 0.75rem;
  z-index: 999;
  padding: 0.75rem 1rem;
  color: var(--white);
  background: var(--ink);
  transform: translateY(-150%);
}

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

.site-header {
  position: fixed;
  inset: 0 0 auto;
  z-index: 100;
  color: var(--white);
  background: transparent;
  transition: background-color 180ms ease, color 180ms ease, border-color 180ms ease;
  border-bottom: 1px solid transparent;
}

.site-header.is-scrolled,
.site-header.menu-visible {
  color: var(--ink);
  background: var(--paper);
  border-bottom-color: var(--ink);
}

.header-inner {
  min-height: 5rem;
  padding: 0 var(--page-padding);
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 2rem;
}

.brand {
  display: inline-flex;
  align-items: center;
  gap: 0.8rem;
  font-weight: 800;
  letter-spacing: -0.03em;
}

.brand-mark {
  display: grid;
  place-items: center;
  width: 2rem;
  height: 2rem;
  color: var(--white);
  background: var(--signal);
  font-size: 1rem;
  line-height: 1;
}

.brand-name {
  font-size: 0.95rem;
  letter-spacing: 0.03em;
}

.site-nav {
  display: flex;
  align-items: center;
  gap: clamp(1rem, 2.5vw, 2.5rem);
  font-size: 0.72rem;
  font-weight: 700;
  letter-spacing: 0.12em;
}

.site-nav a {
  position: relative;
  padding: 0.45rem 0;
}

.site-nav a::after {
  content: "";
  position: absolute;
  right: 0;
  bottom: 0.1rem;
  left: 0;
  height: 1px;
  background: currentColor;
  transform: scaleX(0);
  transform-origin: right;
  transition: transform 180ms ease;
}

.site-nav a:hover::after,
.site-nav a:focus-visible::after {
  transform: scaleX(1);
  transform-origin: left;
}

.site-nav .nav-contact {
  padding: 0.65rem 1rem;
  color: var(--white);
  background: var(--signal);
}

.site-nav .nav-contact::after {
  display: none;
}

.menu-button {
  display: none;
  border: 0;
  color: inherit;
  background: transparent;
  cursor: pointer;
}

.hero {
  position: relative;
  min-height: 100svh;
  padding: clamp(9rem, 15vh, 11rem) var(--page-padding) clamp(3rem, 7vw, 6rem);
  display: grid;
  grid-template-columns: minmax(0, 1.02fr) minmax(0, 0.98fr);
  align-items: end;
  gap: clamp(2rem, 5vw, 6rem);
  color: var(--white);
  background: var(--ink);
  overflow: hidden;
}

.hero::before {
  content: "";
  position: absolute;
  inset: 0;
  background:
    linear-gradient(90deg, rgba(17, 17, 17, 0.95) 0%, rgba(17, 17, 17, 0.78) 42%, rgba(17, 17, 17, 0.12) 100%),
    url("../assets/hero.jpg") center / cover no-repeat;
  opacity: 0.24;
  filter: grayscale(1) contrast(1.15);
}

.hero-copy,
.hero-visual,
.hero-index {
  position: relative;
  z-index: 1;
}

.eyebrow {
  margin: 0 0 1.2rem;
  font-size: 0.7rem;
  font-weight: 800;
  letter-spacing: 0.16em;
  line-height: 1.4;
}

.hero h1 {
  margin: 0;
  /* 「その瞬間をつくる。」が1行に収まる上限。超えると4行に割れる */
  font-size: clamp(2.8rem, 4.7vw, 5.4rem);
  font-weight: 800;
  line-height: 1.02;
  letter-spacing: -0.075em;
}

.hero h1 span {
  display: block;
}

.hero-lead {
  max-width: 42rem;
  margin: clamp(2rem, 5vw, 4rem) 0 0;
  font-size: clamp(0.96rem, 1.25vw, 1.12rem);
  line-height: 1.95;
}

.hero-actions,
.section-cta {
  margin-top: 2.5rem;
  display: flex;
  align-items: center;
  flex-wrap: wrap;
  gap: 1.5rem;
}

.button {
  min-height: 3.25rem;
  padding: 0.85rem 1.25rem;
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 0.55rem;
  border: 1px solid currentColor;
  font-size: 0.76rem;
  font-weight: 800;
  letter-spacing: 0.08em;
  transition: color 160ms ease, background-color 160ms ease, transform 160ms ease;
}

.button:hover {
  transform: translateY(-2px);
}

.button-primary {
  color: var(--white);
  background: var(--signal);
  border-color: var(--signal);
}

.button-primary:hover {
  color: var(--ink);
  background: var(--white);
  border-color: var(--white);
}

.button-outline:hover {
  color: var(--white);
  background: var(--ink);
}

.text-link {
  display: inline-flex;
  align-items: center;
  gap: 0.45rem;
  border-bottom: 1px solid currentColor;
  font-size: 0.78rem;
  font-weight: 800;
  letter-spacing: 0.08em;
}

.hero-visual {
  margin: 0;
  align-self: end;
}

.hero-visual img {
  width: 100%;
  aspect-ratio: 16 / 10;
  object-fit: cover;
  filter: saturate(0.75) contrast(1.1);
}

.hero-visual figcaption {
  margin-top: 0.75rem;
  display: flex;
  justify-content: space-between;
  gap: 1rem;
  font-size: 0.64rem;
  font-weight: 700;
  letter-spacing: 0.12em;
}

.hero-index {
  position: absolute;
  right: var(--page-padding);
  top: 8rem;
  writing-mode: vertical-rl;
  font-size: 0.65rem;
  font-weight: 700;
  letter-spacing: 0.16em;
}

.section {
  padding: var(--section-gap) var(--page-padding) 0;
}

.section-heading {
  margin-bottom: clamp(3rem, 7vw, 6rem);
  display: grid;
  grid-template-columns: clamp(2.5rem, 6vw, 6rem) 1fr;
  gap: clamp(1rem, 3vw, 3rem);
  align-items: start;
}

.section-number {
  margin: 0;
  padding-top: 0.45rem;
  border-top: 2px solid var(--ink);
  font-size: 0.72rem;
  font-weight: 800;
  letter-spacing: 0.08em;
}

.section-heading .eyebrow {
  margin-bottom: 0.5rem;
}

.section-heading h2,
.contact h2 {
  margin: 0;
  font-size: clamp(3.2rem, 9vw, 9.5rem);
  font-weight: 800;
  line-height: 0.88;
  letter-spacing: -0.075em;
  /* 長い英単語がカラム幅を超えても横スクロールさせない保険 */
  overflow-wrap: break-word;
}

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

.feature-card {
  min-height: clamp(26rem, 45vw, 39rem);
  padding: clamp(1.5rem, 4vw, 4rem);
  display: flex;
  flex-direction: column;
}

.feature-card-dark {
  color: var(--white);
  background: var(--ink);
}

.feature-card-light {
  border: 1px solid var(--ink);
  background: var(--white);
}

.feature-meta {
  margin: 0;
  font-size: 0.68rem;
  font-weight: 800;
  letter-spacing: 0.14em;
}

.feature-card h3 {
  max-width: 12ch;
  margin: auto 0 1.6rem;
  font-size: clamp(2.2rem, 5vw, 5.5rem);
  font-weight: 800;
  line-height: 0.98;
  letter-spacing: -0.06em;
}

.feature-card > p:not(.feature-meta) {
  max-width: 30rem;
  margin: 0;
}

.feature-footer {
  margin-top: 3rem;
  padding-top: 1rem;
  display: flex;
  justify-content: space-between;
  gap: 1.5rem;
  border-top: 1px solid currentColor;
  font-size: 0.68rem;
  font-weight: 800;
  letter-spacing: 0.09em;
}

.services-list {
  border-top: 1px solid var(--ink);
}

.service-item {
  min-height: 15rem;
  padding: clamp(1.5rem, 3.5vw, 3.2rem) 0;
  display: grid;
  /* 見出し列は「アーティスト招聘・ツアー制作」が2行に収まる幅を確保 */
  grid-template-columns: clamp(2rem, 5vw, 5rem) minmax(12rem, 1.05fr) minmax(16rem, 1.3fr) minmax(10rem, 0.75fr);
  gap: clamp(1rem, 3vw, 3rem);
  align-items: start;
  border-bottom: 1px solid var(--ink);
}

.service-id,
.service-item h3,
.service-item p {
  margin: 0;
}

.service-id,
.service-en {
  font-size: 0.66rem;
  font-weight: 800;
  letter-spacing: 0.12em;
}

.service-item h3 {
  font-size: clamp(1.45rem, 2.7vw, 2.8rem);
  line-height: 1.2;
  letter-spacing: -0.04em;
}

.service-item > p:nth-of-type(2) {
  max-width: 48rem;
}

.service-en {
  text-align: right;
}

.works-table {
  margin: 0;
  padding: 0;
  list-style: none;
  border-top: 2px solid var(--ink);
}

.work-row {
  min-height: 5.2rem;
  padding: 1rem 0;
  display: grid;
  grid-template-columns: minmax(7.5rem, 0.55fr) minmax(12rem, 2fr) minmax(5rem, 0.45fr);
  gap: 1rem;
  align-items: baseline;
  border-bottom: 1px solid var(--line);
}

.work-code,
.work-format {
  font-size: 0.72rem;
  font-weight: 800;
  letter-spacing: 0.1em;
}

.work-format {
  text-align: right;
}

.work-title {
  font-size: clamp(1.15rem, 2.4vw, 2.3rem);
  font-weight: 700;
  letter-spacing: -0.035em;
  overflow-wrap: break-word;
}

.works-note {
  margin: 2rem 0 0;
  font-size: 0.88rem;
}

/* WORKS — 公演名を出さずに領域と役割で見せる */
.field-grid {
  display: grid;
  grid-template-columns: repeat(4, minmax(0, 1fr));
  gap: 0;
  border-top: 2px solid var(--ink);
}

.field {
  padding: 1.5rem clamp(1rem, 2vw, 1.75rem) 2.25rem 0;
  display: flex;
  flex-direction: column;
  gap: 0.6rem;
  border-bottom: 1px solid var(--ink);
}

.field + .field {
  padding-left: clamp(1rem, 2vw, 1.75rem);
  border-left: 1px solid var(--line);
}

.field-en {
  margin: 0;
  font-size: 0.62rem;
  font-weight: 800;
  letter-spacing: 0.13em;
  color: #55534f;
}

.field h3 {
  margin: 0;
  font-size: clamp(1.15rem, 1.9vw, 1.6rem);
  font-weight: 700;
  line-height: 1.3;
  letter-spacing: -0.035em;
}

.field-role {
  margin: auto 0 0;
  padding-top: 0.9rem;
  display: flex;
  align-items: center;
  gap: 0.5rem;
  font-size: 0.72rem;
  font-weight: 800;
  letter-spacing: 0.06em;
}

/* シグナルカラーはオフホワイト上で 4.16:1 のため、文字色には使わず記号に留める */
.field-role::before {
  content: "";
  width: 0.5rem;
  height: 0.5rem;
  flex-shrink: 0;
  background: var(--signal);
}

.work-note {
  margin: clamp(2.5rem, 5vw, 3.5rem) 0 0;
  padding-top: 1.1rem;
  max-width: 46rem;
  border-top: 1px solid var(--line);
  font-size: 0.8rem;
  line-height: 1.8;
  color: #55534f;
}

.tag-sold {
  display: inline-block;
  margin-left: 0.5rem;
  padding: 0.15em 0.5em;
  color: var(--white);
  background: var(--signal);
  font-size: 0.62rem;
  font-weight: 800;
  letter-spacing: 0.1em;
  vertical-align: 0.1em;
}

/* LABEL — レーベルとの関係を示す反転バンド */
.label {
  margin-top: var(--section-gap);
  padding: clamp(4rem, 9vw, 9rem) var(--page-padding);
  color: var(--white);
  background: var(--ink);
}

.label-inner {
  display: grid;
  grid-template-columns: minmax(0, 1fr) minmax(0, 1fr);
  gap: clamp(3rem, 8vw, 8rem);
  align-items: start;
}

.section-heading-invert {
  margin-bottom: 0;
}

.section-heading-invert .section-number {
  border-top-color: var(--signal);
  color: var(--white);
}

.label h2 {
  font-size: clamp(2.1rem, 5.2vw, 5rem);
  line-height: 0.95;
}

.label-lead {
  margin: 0 0 1.8rem;
  font-size: clamp(1.35rem, 2.6vw, 2.4rem);
  font-weight: 700;
  line-height: 1.4;
  letter-spacing: -0.04em;
}

.label-body p:not(.label-lead) {
  max-width: 36rem;
  margin: 0 0 1.2rem;
}

.label-facts {
  margin: 2.75rem 0;
  display: flex;
  flex-wrap: wrap;
  gap: 0 clamp(2rem, 6vw, 5rem);
  border-top: 1px solid var(--line-dark);
}

.label-facts div {
  padding-top: 1rem;
  border-top: 3px solid var(--signal);
  margin-top: -1px;
}

.label-facts dt {
  font-size: 0.66rem;
  font-weight: 800;
  letter-spacing: 0.12em;
}

.label-links {
  margin-top: 0.5rem;
}

.label-facts dd {
  margin: 0.3rem 0 0;
  font-size: clamp(1.5rem, 3vw, 2.4rem);
  font-weight: 800;
  letter-spacing: -0.04em;
}

.company-layout {
  display: grid;
  grid-template-columns: minmax(0, 1fr) minmax(0, 1fr);
  gap: clamp(3rem, 9vw, 10rem);
}

.company-statement {
  font-size: clamp(1.55rem, 3.3vw, 3.5rem);
  font-weight: 700;
  line-height: 1.38;
  letter-spacing: -0.045em;
}

.company-statement p {
  margin: 0 0 1.4em;
}

.company-data {
  margin: 0;
  border-top: 1px solid var(--ink);
}

.company-data div {
  padding: 1.15rem 0;
  display: grid;
  grid-template-columns: 7rem 1fr;
  gap: 1.5rem;
  border-bottom: 1px solid var(--line);
}

.company-data dt {
  font-size: 0.72rem;
  font-weight: 800;
  letter-spacing: 0.08em;
}

.company-data dd {
  margin: 0;
}

.contact {
  margin-top: var(--section-gap);
  padding: clamp(4rem, 9vw, 9rem) var(--page-padding);
  display: grid;
  grid-template-columns: minmax(0, 1.25fr) minmax(18rem, 0.75fr);
  gap: clamp(3rem, 8vw, 8rem);
  align-items: end;
  color: var(--white);
  background: var(--signal);
}

.contact h2 {
  font-size: clamp(3.4rem, 8.5vw, 9rem);
}

.contact-action p {
  max-width: 32rem;
  margin: 0 0 2.5rem;
}

.contact-mail {
  display: inline-flex;
  align-items: center;
  gap: 0.8rem;
  padding-bottom: 0.5rem;
  border-bottom: 2px solid currentColor;
  font-size: clamp(1.2rem, 2.5vw, 2.4rem);
  font-weight: 700;
  letter-spacing: -0.03em;
}

.site-footer {
  padding: clamp(3rem, 6vw, 6rem) var(--page-padding) 2rem;
  color: var(--white);
  background: var(--ink);
}

.footer-brand {
  font-size: clamp(3.5rem, 11vw, 11rem);
  font-weight: 800;
  line-height: 0.85;
  letter-spacing: -0.08em;
}

.footer-links {
  margin: clamp(3rem, 7vw, 7rem) 0;
  display: flex;
  flex-wrap: wrap;
  gap: 1rem 2rem;
  font-size: 0.72rem;
  font-weight: 800;
  letter-spacing: 0.09em;
}

.footer-links a,
.footer-bottom a {
  border-bottom: 1px solid transparent;
}

.footer-links a:hover,
.footer-bottom a:hover {
  border-bottom-color: currentColor;
}

.footer-bottom {
  padding-top: 1.25rem;
  display: flex;
  justify-content: space-between;
  gap: 2rem;
  border-top: 1px solid var(--line-dark);
  font-size: 0.66rem;
  font-weight: 700;
  letter-spacing: 0.1em;
}

.footer-bottom p {
  margin: 0;
}

/* 404 */
.notfound {
  min-height: 100svh;
  padding: var(--page-padding);
  display: flex;
  flex-direction: column;
  align-items: flex-start;
  justify-content: center;
  color: var(--white);
  background: var(--ink);
}

.notfound h1 {
  margin: 0;
  font-size: clamp(2.4rem, 8vw, 6rem);
  font-weight: 800;
  line-height: 0.98;
  letter-spacing: -0.06em;
}

.notfound-lead {
  margin: 1.75rem 0 0;
}

@media (max-width: 960px) {
  .menu-button {
    position: relative;
    z-index: 2;
    display: inline-flex;
    align-items: center;
    gap: 0.7rem;
    padding: 0.6rem 0;
  }

  .menu-button-label {
    font-size: 0.68rem;
    font-weight: 800;
    letter-spacing: 0.12em;
  }

  .menu-button-icon,
  .menu-button-icon::before,
  .menu-button-icon::after {
    width: 1.4rem;
    height: 1px;
    display: block;
    background: currentColor;
    transition: transform 180ms ease, opacity 180ms ease;
  }

  .menu-button-icon {
    position: relative;
  }

  .menu-button-icon::before,
  .menu-button-icon::after {
    content: "";
    position: absolute;
    left: 0;
  }

  .menu-button-icon::before { top: -0.4rem; }
  .menu-button-icon::after { top: 0.4rem; }

  .menu-button[aria-expanded="true"] .menu-button-icon {
    background: transparent;
  }

  .menu-button[aria-expanded="true"] .menu-button-icon::before {
    top: 0;
    transform: rotate(45deg);
  }

  .menu-button[aria-expanded="true"] .menu-button-icon::after {
    top: 0;
    transform: rotate(-45deg);
  }

  .site-nav {
    position: fixed;
    inset: 0;
    padding: 8rem var(--page-padding) 3rem;
    display: flex;
    flex-direction: column;
    align-items: flex-start;
    gap: 0;
    color: var(--ink);
    background: var(--paper);
    visibility: hidden;
    opacity: 0;
    transform: translateY(-1rem);
    transition: opacity 180ms ease, transform 180ms ease, visibility 180ms ease;
  }

  .site-nav.is-open {
    visibility: visible;
    opacity: 1;
    transform: translateY(0);
  }

  .site-nav a {
    width: 100%;
    padding: 1rem 0;
    border-bottom: 1px solid var(--ink);
    font-size: clamp(1.6rem, 6vw, 3rem);
    letter-spacing: -0.04em;
  }

  .site-nav a::after {
    display: none;
  }

  .site-nav .nav-contact {
    margin-top: 1.5rem;
    padding-inline: 1rem;
  }

  .hero {
    grid-template-columns: 1fr;
    min-height: auto;
    padding-top: 9rem;
  }

  .hero::before {
    background:
      linear-gradient(180deg, rgba(17, 17, 17, 0.86) 0%, rgba(17, 17, 17, 0.72) 55%, rgba(17, 17, 17, 0.92) 100%),
      url("../assets/hero.jpg") center / cover no-repeat;
    opacity: 0.6;
  }

  .hero-copy {
    padding-bottom: 2rem;
  }

  .hero-visual {
    display: none;
  }

  .hero-index {
    top: 7.2rem;
  }

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

  .service-item > p:nth-of-type(2),
  .service-en {
    grid-column: 2;
  }

  .service-en {
    text-align: left;
  }

  .label-inner,
  .company-layout,
  .contact {
    grid-template-columns: 1fr;
  }

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

  .field:nth-child(odd) {
    padding-left: 0;
    border-left: 0;
  }

  .field:nth-child(even) {
    padding-left: clamp(1rem, 2vw, 1.75rem);
    border-left: 1px solid var(--line);
  }

  .label h2 {
    font-size: clamp(2rem, 7vw, 3.4rem);
  }

  .contact-action {
    padding-top: 1rem;
    border-top: 1px solid currentColor;
  }
}

@media (max-width: 680px) {
  :root {
    --page-padding: 1.1rem;
  }

  html {
    scroll-padding-top: 4.25rem;
  }

  .header-inner {
    min-height: 4.25rem;
  }

  .brand-name {
    font-size: 0.85rem;
  }

  .hero {
    padding-top: 7.6rem;
    padding-bottom: 2rem;
  }

  .hero h1 {
    font-size: clamp(2.75rem, 14.5vw, 5.2rem);
  }

  .hero h1 span {
    display: inline;
  }

  .hero-lead br {
    display: none;
  }

  .hero-index {
    display: none;
  }

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

  .feature-card {
    min-height: 29rem;
  }

  .section-heading {
    grid-template-columns: 2.3rem 1fr;
  }

  /* 18vw は SERVICES / RECORDINGS 等の分割不可な英単語が
     カラム幅を超え、375px以下で横スクロールを起こしていた */
  .section-heading h2,
  .contact h2 {
    font-size: clamp(2.6rem, 13vw, 6rem);
  }

  .label h2 {
    font-size: clamp(1.9rem, 9.5vw, 2.8rem);
  }

  .service-item {
    min-height: 0;
    grid-template-columns: 2.2rem 1fr;
  }

  .service-item h3 {
    font-size: 1.55rem;
  }

  .work-row {
    min-height: 0;
    grid-template-columns: 1fr auto;
    gap: 0.35rem 1rem;
  }

  .work-code {
    grid-column: 1;
    grid-row: 1;
  }

  .work-format {
    grid-column: 2;
    grid-row: 1;
  }

  .work-title {
    grid-column: 1 / -1;
    grid-row: 2;
    font-size: 1.2rem;
  }

  .work-code,
  .work-format {
    font-size: 0.62rem;
  }

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

  .field,
  .field:nth-child(even) {
    padding: 1.25rem 0 1.5rem;
    border-left: 0;
  }

  .label {
    padding-block: 4rem;
  }

  .label-facts {
    gap: 0 2rem;
  }

  .company-statement {
    font-size: 1.75rem;
  }

  .company-data div {
    grid-template-columns: 5.5rem 1fr;
    gap: 1rem;
  }

  .contact-mail {
    font-size: clamp(1.05rem, 5.8vw, 1.5rem);
  }

  .footer-bottom {
    flex-direction: column;
    gap: 0.8rem;
  }
}

@media (prefers-reduced-motion: reduce) {
  *,
  *::before,
  *::after {
    scroll-behavior: auto !important;
    transition-duration: 0.001ms !important;
    animation-duration: 0.001ms !important;
    animation-iteration-count: 1 !important;
  }
}