: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;
  /* 黒背景の上でだけ使う明るい版（オフホワイト面では使わない） */
  --signal-on-dark: #ff6a55;
  --line: rgba(17, 17, 17, 0.22);
  --line-dark: rgba(255, 255, 255, 0.24);
  --muted: #55534f;
  --page-padding: clamp(1.25rem, 4vw, 4.5rem);
  --section-gap: clamp(6rem, 12vw, 11rem);
  --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 { 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); }

/* Header */
.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: 1.5rem;
}
.brand {
  display: inline-flex;
  align-items: center;
}
.brand-logo {
  display: block;
  width: 150px;
  height: auto;
}
/* 上部（黒背景）では白版、スクロール後（明るい背景）では黒版に切替 */
.brand-logo-dark { display: none; }
.site-header.is-scrolled .brand-logo-light,
.site-header.menu-visible .brand-logo-light { display: none; }
.site-header.is-scrolled .brand-logo-dark,
.site-header.menu-visible .brand-logo-dark { display: block; }
.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 */
.hero {
  position: relative;
  min-height: 100svh;
  padding: clamp(9rem, 15vh, 11rem) var(--page-padding) clamp(3rem, 7vw, 6rem);
  display: flex;
  flex-direction: column;
  justify-content: flex-end;
  color: var(--white);
  background: var(--ink);
  overflow: hidden;
}
.hero::before {
  content: "";
  position: absolute;
  inset: 0;
  background:
    repeating-linear-gradient(0deg, rgba(255,255,255,0.04) 0, rgba(255,255,255,0.04) 1px, transparent 1px, transparent 7px);
  pointer-events: none;
}
.hero-copy, .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;
  font-size: clamp(2.6rem, 10vw, 9rem);
  font-weight: 800;
  line-height: 0.92;
  letter-spacing: -0.055em;
}
.hero h1 span { display: block; }
.hero-lead {
  max-width: 42rem;
  margin: clamp(1.75rem, 4vw, 3rem) 0 0.4rem;
  font-size: clamp(1.15rem, 2.4vw, 2rem);
  font-weight: 700;
  font-style: italic;
  letter-spacing: -0.02em;
  color: var(--signal-on-dark, #ff6a55);
}
.hero-actions {
  margin-top: 2.5rem;
  display: flex;
  align-items: center;
  flex-wrap: wrap;
  gap: 1.25rem 1.5rem;
}
.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;
}

/* Buttons */
.button {
  min-height: 3.25rem;
  padding: 0.85rem 1.4rem;
  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;
}

/* Sections */
.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 {
  margin: 0;
  font-size: clamp(3.2rem, 9vw, 9.5rem);
  font-weight: 800;
  line-height: 0.88;
  letter-spacing: -0.075em;
  overflow-wrap: break-word;
}

/* About */
.about-layout {
  display: grid;
  grid-template-columns: 1.15fr 0.85fr;
  gap: clamp(2.5rem, 6vw, 6rem);
}
.about-en p:first-child { margin-top: 0; }
.about-en p {
  font-size: clamp(1.15rem, 1.7vw, 1.6rem);
  line-height: 1.55;
  letter-spacing: -0.01em;
  margin: 0 0 1.3em;
}
.about-founder {
  padding-top: 0.4rem;
}

/* Catalog */
.cat-table {
  margin: 0;
  padding: 0;
  list-style: none;
  border-top: 2px solid var(--ink);
}
.cat-table li {
  padding: 0.85rem 0;
  display: grid;
  grid-template-columns: 6.5rem 1fr auto;
  gap: 0.5rem 1.5rem;
  align-items: baseline;
  border-bottom: 1px solid var(--line);
}
.cat-code {
  font-size: 0.72rem;
  font-weight: 800;
  letter-spacing: 0.06em;
  font-variant-numeric: tabular-nums;
}
.cat-title {
  font-size: clamp(1rem, 1.6vw, 1.35rem);
  font-weight: 700;
  letter-spacing: -0.02em;
  overflow-wrap: break-word;
}
.cat-format {
  font-size: 0.7rem;
  font-weight: 700;
  letter-spacing: 0.08em;
  color: var(--muted);
  text-align: right;
  white-space: nowrap;
}
.section-cta {
  margin-top: 2.5rem;
  display: flex;
  align-items: center;
  flex-wrap: wrap;
  gap: 1.25rem 1.5rem;
}

/* News */
.news-list {
  margin: 0;
  padding: 0;
  list-style: none;
  border-top: 2px solid var(--ink);
}
.news-list li { border-bottom: 1px solid var(--line); }
.news-row {
  padding: 1.15rem 0;
  display: grid;
  grid-template-columns: 6rem 1fr auto;
  gap: 1.5rem;
  align-items: baseline;
  transition: color 150ms ease, padding 150ms ease;
}
.news-row:hover { color: var(--signal); padding-inline: 0.5rem; }
.news-arw { color: var(--signal); font-weight: 800; }
.news-date {
  font-size: 0.72rem;
  font-weight: 800;
  letter-spacing: 0.08em;
  font-variant-numeric: tabular-nums;
}
.news-body {
  font-size: clamp(1.1rem, 2vw, 1.7rem);
  font-weight: 700;
  letter-spacing: -0.03em;
}

/* Founder (within About) */
.profile-name {
  margin: 0 0 1rem;
  font-size: clamp(1.7rem, 3.2vw, 2.8rem);
  font-weight: 800;
  letter-spacing: -0.04em;
  line-height: 1;
}
.profile-role { margin: 0 0 2rem; font-size: 0.95rem; line-height: 1.7; }
.block-label {
  margin: 0 0 1.2rem;
  padding-top: 1.2rem;
  border-top: 1px solid var(--line);
  font-size: 0.68rem;
  font-weight: 800;
  letter-spacing: 0.14em;
}
.stages-list {
  margin: 0;
  font-size: clamp(1.05rem, 1.6vw, 1.35rem);
  line-height: 1.65;
  letter-spacing: -0.01em;
}

/* Links (dark band) */
.links {
  margin-top: var(--section-gap);
  padding: clamp(4rem, 9vw, 9rem) var(--page-padding);
  color: var(--white);
  background: var(--ink);
}
.section-heading-invert { margin-bottom: clamp(2.5rem, 6vw, 4.5rem); }
.section-heading-invert .section-number {
  border-top-color: var(--signal);
  color: var(--white);
}
.links-grid {
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  border-top: 1px solid var(--line-dark);
}
.links-grid a {
  padding: 1.35rem 0;
  display: flex;
  justify-content: space-between;
  align-items: center;
  gap: 1rem;
  border-bottom: 1px solid var(--line-dark);
  font-size: clamp(1.05rem, 2vw, 1.5rem);
  font-weight: 700;
  letter-spacing: -0.02em;
  transition: color 160ms ease, padding 160ms ease;
}
.links-grid a:nth-child(odd) { padding-right: clamp(1rem, 4vw, 3rem); }
.links-grid a:nth-child(even) { padding-left: clamp(1rem, 4vw, 3rem); border-left: 1px solid var(--line-dark); }
.links-grid a:hover { color: #ff6a55; }
.contact-row {
  margin-top: clamp(2.5rem, 6vw, 4rem);
  display: flex;
  flex-wrap: wrap;
  justify-content: space-between;
  align-items: flex-end;
  gap: 1.5rem 3rem;
}
.contact-row p { margin: 0; color: #d7d5cf; }
.contact-mail {
  display: inline-flex;
  align-items: center;
  gap: 0.7rem;
  padding-bottom: 0.4rem;
  border-bottom: 2px solid currentColor;
  font-size: clamp(1.3rem, 3vw, 2.6rem);
  font-weight: 800;
  letter-spacing: -0.03em;
}

/* Footer */
.site-footer {
  padding: clamp(3rem, 6vw, 6rem) var(--page-padding) 2rem;
  color: var(--white);
  background: var(--ink);
  border-top: 1px solid var(--line-dark);
}
.footer-logo {
  display: block;
  width: min(340px, 78%);
  height: auto;
}
.logo-placeholder-note {
  margin: 1rem 0 0;
  font-size: 0.66rem;
  letter-spacing: 0.06em;
  color: #8a8880;
}
.footer-bottom {
  margin-top: clamp(2.5rem, 6vw, 5rem);
  padding-top: 1.25rem;
  display: flex;
  flex-wrap: wrap;
  justify-content: space-between;
  gap: 0.8rem 2rem;
  border-top: 1px solid var(--line-dark);
  font-size: 0.66rem;
  font-weight: 700;
  letter-spacing: 0.1em;
}
.footer-bottom p { margin: 0; }
.footer-op a { border-bottom: 1px solid currentColor; }

/* Responsive */
@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; }

  .about-layout { grid-template-columns: 1fr; }
  .about-founder { padding-top: 0; }
  .links-grid { grid-template-columns: 1fr; }
  .links-grid a:nth-child(odd) { padding-right: 0; }
  .links-grid a:nth-child(even) { padding-left: 0; border-left: 0; }
}

@media (max-width: 680px) {
  :root { --page-padding: 1.1rem; }
  html { scroll-padding-top: 4.25rem; }
  .header-inner { min-height: 4.25rem; }
  .brand-logo { width: 120px; }
  .hero { padding-top: 7.6rem; }
  .hero h1 { font-size: clamp(2.5rem, 13vw, 4.6rem); }
  .hero-index { display: none; }
  .section-heading { grid-template-columns: 2.3rem 1fr; }
  .section-heading h2 { font-size: clamp(2.6rem, 15vw, 5.5rem); }
  .cat-table li {
    grid-template-columns: 1fr auto;
    gap: 0.2rem 1rem;
  }
  .cat-code { grid-column: 1; grid-row: 1; }
  .cat-format { grid-column: 2; grid-row: 1; }
  .cat-title { grid-column: 1 / -1; grid-row: 2; }
  .news-row { grid-template-columns: 4.5rem 1fr auto; gap: 1rem; }
  .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;
  }
}

/* News article pages */
.article { padding: clamp(7rem,14vh,9rem) var(--page-padding) 0; max-width: 1120px; margin-inline: auto; }
.article-back { display: inline-flex; align-items: center; gap: 0.4rem; font-size: 0.72rem; font-weight: 800; letter-spacing: 0.1em; border-bottom: 1px solid currentColor; }
.article-date { margin: 2.5rem 0 0.6rem; font-size: 0.72rem; font-weight: 800; letter-spacing: 0.12em; color: var(--muted); }
.article h1 { margin: 0; font-size: clamp(2rem,5.5vw,4rem); font-weight: 800; line-height: 1.02; letter-spacing: -0.04em; }
.article-layout { margin-top: clamp(2.5rem,5vw,4rem); display: grid; grid-template-columns: minmax(0,0.85fr) minmax(0,1.15fr); gap: clamp(2rem,5vw,4.5rem); align-items: start; }
.article-poster { position: sticky; top: 6rem; }
.article-poster img { width: 100%; height: auto; border: 1px solid var(--line); }
.article-body p { font-size: 1.02rem; line-height: 1.95; margin: 0 0 1.4rem; }
.article-body h2 { margin: 2.5rem 0 0.8rem; font-size: 1.4rem; font-weight: 800; letter-spacing: -0.02em; }
.article-body h2:first-child { margin-top: 0; }
.presents { margin-top: 3rem; font-size: 0.72rem; font-weight: 800; letter-spacing: 0.14em; color: var(--signal); }
.shows { margin: 1rem 0 0; border-top: 2px solid var(--ink); }
.show { padding: 1.4rem 0; border-bottom: 1px solid var(--line); }
.show-h { display: flex; flex-wrap: wrap; align-items: baseline; gap: 0.5rem 1rem; }
.show-h .d { font-size: 1.2rem; font-weight: 800; letter-spacing: -0.02em; }
.show-h .v { font-size: 1.2rem; font-weight: 800; }
.show-h .sub { font-size: 0.8rem; color: var(--muted); }
.show .lineup { margin: 0.5rem 0 0.4rem; font-size: 0.92rem; line-height: 1.6; }
.show .info { font-size: 0.85rem; color: var(--muted); }
.show .info a { color: var(--signal); border-bottom: 1px solid currentColor; font-weight: 700; }
.credits { margin-top: 2.5rem; font-size: 0.85rem; line-height: 1.9; color: var(--muted); }
.article-links { margin: 2rem 0 0; display: flex; flex-wrap: wrap; gap: 1rem 1.5rem; }
@media (max-width: 820px){ .article-layout { grid-template-columns: 1fr; } .article-poster { position: static; max-width: 26rem; } }