@charset "UTF-8";

:root {
  --bg: #000000;
  --bg-soft: #0d0d0d;
  --line: rgba(255, 255, 255, 0.12);
  --line-strong: rgba(255, 255, 255, 0.24);
  --text: rgba(255, 255, 255, 0.94);
  --text-soft: rgba(255, 255, 255, 0.74);
  --accent: #c6a46a;
  --container: 1200px;
  --info-width: 960px;
}

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

html {
  font-size: 100%;
  scroll-behavior: smooth;
}

body {
  margin: 0;
  color: var(--text);
  background: var(--bg);
  font-family: "Noto Serif JP", serif;
  line-height: 1.9;
  -webkit-text-size-adjust: 100%;
  text-rendering: optimizeLegibility;
  font-feature-settings: "palt";
}

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

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

iframe {
  display: block;
  width: 100%;
  height: 100%;
  border: 0;
}

.container {
  width: min(100% - 80px, var(--container));
  margin-inline: auto;
}

.section {
  padding: 110px 0;
}

/* =========================
   Header
========================= */
.site-header {
  position: absolute;
  inset: 0 auto auto 0;
  width: 100%;
  z-index: 20;
}

.header-inner {
  min-height: 1px;
  padding: 0;
}

/* =========================
   Hero
========================= */
.hero {
  position: relative;
  min-height: 100svh;
  display: flex;
  align-items: center;
  overflow: hidden;
  background:
    radial-gradient(circle at 82% 76%, rgba(126, 62, 28, 0.18), transparent 15%),
    radial-gradient(circle at 18% 28%, rgba(255, 255, 255, 0.02), transparent 17%),
    linear-gradient(180deg, #000 0%, #040404 58%, #0a0a0a 100%);
}

.hero::before {
  content: "";
  position: absolute;
  inset: 0;
  background:
    linear-gradient(90deg, rgba(255,255,255,0.01) 0, rgba(255,255,255,0.01) 1px, transparent 1px, transparent 100%),
    linear-gradient(180deg, rgba(255,255,255,0.01) 0, rgba(255,255,255,0.01) 1px, transparent 1px, transparent 100%);
  background-size: 140px 140px;
  opacity: 0.1;
  pointer-events: none;
}

.hero-overlay {
  position: absolute;
  inset: 0;
  background: linear-gradient(180deg, rgba(0,0,0,0.16) 0%, rgba(0,0,0,0.56) 100%);
  pointer-events: none;
}

.hero-inner {
  position: relative;
  z-index: 1;
  width: 100%;
  padding: 72px 0;
}

.hero-content {
  width: min(100%, 980px);
  margin: 0 auto;
  text-align: center;
}

.hero-logo {
  width: min(100%, 720px);
  margin: 0 auto 42px;
}

.hero-logo img {
  width: 100%;
  height: auto;
  display: block;
}

.hero-date {
  margin: 0 0 14px;
  color: rgba(255, 255, 255, 0.92);
  font-family: "Cormorant Garamond", serif;
  font-size: clamp(1.1rem, 1.8vw, 1.45rem);
  letter-spacing: 0.16em;
  line-height: 1.5;
}

.hero-copy-en {
  margin: 0 0 22px;
  color: var(--accent);
  font-family: "Cormorant Garamond", serif;
  font-size: clamp(0.95rem, 1.3vw, 1.1rem);
  line-height: 1.5;
  letter-spacing: 0.32em;
  text-transform: uppercase;
}

.hero-copy-ja {
  width: min(100%, 700px);
  margin: 0 auto;
  color: var(--text-soft);
  font-size: 1rem;
  line-height: 2.15;
  letter-spacing: 0.06em;
}

.hero-btn-wrap {
  margin-top: 38px;
}

.hero-btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  min-width: 220px;
  min-height: 58px;
  padding: 14px 30px;
  border: 1px solid var(--line-strong);
  background: rgba(255,255,255,0.02);
  color: #fff;
  font-size: 0.9rem;
  letter-spacing: 0.16em;
  transition: background-color 0.3s ease, border-color 0.3s ease, transform 0.3s ease;
}

.hero-btn:hover {
  background: rgba(255,255,255,0.08);
  border-color: rgba(255,255,255,0.34);
  transform: translateY(-2px);
}

/* =========================
   Intro
========================= */
.intro {
  background: var(--bg-soft);
  border-top: 1px solid var(--line);
  border-bottom: 1px solid var(--line);
}

.intro-container {
  width: 100%;
  max-width:800px;
}

.intro-head {
  margin-bottom: 34px;
}

.intro-en,
.section-heading-en {
  margin: 0 0 12px;
  color: var(--accent);
  font-family: "Cormorant Garamond", serif;
  font-size: 1rem;
  letter-spacing: 0.24em;
  text-transform: uppercase;
}

.intro-title {
  margin: 0;
  font-size: clamp(2rem, 2.8vw, 3.0rem);
  line-height: 1.35;
  font-weight: 500;
  letter-spacing: 0.04em;
}

.intro-body {
  margin: 0 auto;
}

.intro-body p {
  margin: 0;
  color: var(--text-soft);
  line-height: 2;
  letter-spacing: 0.06em;

}

/* =========================
   Info
========================= */
.info-single {
  width: min(100%, var(--info-width));
}

.info-block {
  padding: 40px;
  border: 1px solid var(--line);
  background: linear-gradient(180deg, rgba(255,255,255,0.02), rgba(255,255,255,0.01));
}

.section-title {
  margin: 0 0 28px;
  font-size: clamp(1.8rem, 4vw, 2.8rem);
  line-height: 1.35;
  font-weight: 500;
  letter-spacing: 0.04em;
}

.section-title.left {
  margin-bottom: 24px;
}

.info-list {
  margin: 0;
}

.info-row {
  display: grid;
  grid-template-columns: 180px 1fr;
  gap: 16px;
  padding: 16px 0;
  border-bottom: 1px solid var(--line);
}

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

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

.info-row dt {
  color: var(--accent);
  font-family: "Cormorant Garamond", serif;
  font-size: 1rem;
  letter-spacing: 0.12em;
  text-transform: uppercase;
}

.info-row dd {
  margin: 0;
  color: var(--text);
  letter-spacing: 0.03em;
}

/* =========================
   Access
========================= */
.section-heading {
  margin-bottom: 28px;
}

.map-wrap {
  position: relative;
  aspect-ratio: 16 / 9;
  overflow: hidden;
  border: 1px solid var(--line);
  background: #111;
}

/* =========================
   Footer
========================= */
.site-footer {
  border-top: 1px solid var(--line);
  padding: 28px 0;
  background: #050505;
}

.footer-inner {
  display: flex;
  justify-content: space-between;
  align-items: center;
  gap: 20px;
}

.footer-logo {
  margin: 0;
  font-family: "Cormorant Garamond", serif;
  font-size: 1.4rem;
  letter-spacing: 0.12em;
  text-transform: uppercase;
}

.footer-copy {
  margin: 0;
  color: var(--text-soft);
  font-size: 0.85rem;
  letter-spacing: 0.08em;
}

/* =========================
   Responsive
========================= */
@media (max-width: 900px) {
  .section {
    padding: 86px 0;
  }

  .container {
    width: min(100% - 64px, var(--container));
  }

  .hero-logo {
    width: min(100%, 560px);
  }

  .intro-body {
    grid-template-columns: 1fr;
    gap: 24px;
  }

  .info-block {
    padding: 30px 24px;
  }

  .info-row {
    grid-template-columns: 1fr;
    gap: 6px;
  }

  .footer-inner {
    flex-direction: column;
    align-items: flex-start;
  }
}

@media (max-width: 640px) {
  .container,
  .info-single {
    width: min(100% - 56px, var(--container));
  }

  .section {
    padding: 72px 0;
  }

  .hero {
    min-height: auto;
    padding: 120px 0 80px;
  }

  .hero-inner {
    padding: 0;
  }

  .hero-content {
    width: 100%;
  }

  .hero-logo {
    width: min(100%, 520px);
    margin-bottom: 30px;
  }

  .hero-date {
    margin-bottom: 12px;
    font-size: 1rem;
    letter-spacing: 0.12em;
  }

  .hero-copy-en {
    margin-bottom: 18px;
    font-size: 0.9rem;
    letter-spacing: 0.22em;
  }

  .hero-copy-ja {
    width: 100%;
    font-size: 0.96rem;
    line-height: 2;
    letter-spacing: 0.04em;
  }

  .hero-btn-wrap {
    margin-top: 28px;
  }

  .hero-btn {
    min-width: 190px;
    min-height: 50px;
    padding: 12px 22px;
    font-size: 0.84rem;
    letter-spacing: 0.12em;
  }

  .intro-head {
    margin-bottom: 24px;
  }

  .intro-en,
  .section-heading-en {
    font-size: 0.92rem;
    letter-spacing: 0.18em;
  }

  .intro-title {
    font-size: 1.8rem;
  }

  .intro-body p,
  .info-row dd {
    font-size: 0.95rem;
    line-height: 1.95;
  }

  .section-title {
    margin-bottom: 20px;
  }
}