:root {
  --ink: #1c2733;
  --sumi: #0f1a22;
  --sumi-soft: #16232e;
  --paper: #faf6ec;
  --paper-alt: #f1ead9;
  --white: #ffffff;
  --gold: #c9a227;
  --gold-soft: #e6c96a;
  --lacquer: #8a3f1d;
  --lake: #2f6f6a;
  --muted: #5c6b76;
  --line: #e3dbc6;
  --radius: 14px;
  --shadow: 0 10px 30px rgba(15, 26, 34, 0.08);
  --font-mincho: "Shippori Mincho", "Hiragino Mincho ProN", "Yu Mincho", serif;
  --font-sans: "Noto Sans JP", "Hiragino Kaku Gothic ProN", sans-serif;
}

* { margin: 0; padding: 0; box-sizing: border-box; }

html { scroll-behavior: smooth; }

body {
  font-family: var(--font-sans);
  color: var(--ink);
  background: var(--paper);
  line-height: 1.8;
  font-size: 16px;
  -webkit-font-smoothing: antialiased;
}

img, svg { display: block; max-width: 100%; }
a { color: inherit; text-decoration: none; }
ul, ol { list-style: none; }

.container {
  width: min(1080px, 92%);
  margin-inline: auto;
}
.container-narrow { width: min(760px, 92%); }

/* ---------- Header ---------- */
.site-header {
  position: fixed;
  inset: 0 0 auto 0;
  z-index: 100;
  background: rgba(15, 26, 34, 0.85);
  backdrop-filter: blur(10px);
  -webkit-backdrop-filter: blur(10px);
  transition: box-shadow 0.3s ease;
}
.site-header.scrolled { box-shadow: 0 6px 24px rgba(15, 26, 34, 0.35); }

.demo-banner {
  height: 32px;
  display: flex;
  align-items: center;
  justify-content: center;
  gap: 8px;
  background: linear-gradient(90deg, var(--lacquer), #a5521f);
  color: #fdf3e4;
  font-size: 0.75rem;
  letter-spacing: 0.06em;
  padding: 0 12px;
  text-align: center;
}
.demo-badge {
  flex: none;
  background: var(--paper);
  color: var(--lacquer);
  font-weight: 700;
  font-size: 0.68rem;
  letter-spacing: 0.14em;
  border-radius: 999px;
  padding: 1px 10px;
}

.header-inner {
  display: flex;
  align-items: center;
  justify-content: space-between;
  height: 64px;
}

.brand {
  display: flex;
  align-items: center;
  gap: 10px;
}
.brand-mark { width: 44px; height: 22px; }
.brand-text {
  font-family: var(--font-mincho);
  font-weight: 700;
  font-size: 1.15rem;
  letter-spacing: 0.12em;
  color: var(--paper);
}

.site-nav {
  display: flex;
  align-items: center;
  gap: 28px;
}
.site-nav a {
  color: rgba(250, 246, 236, 0.85);
  font-size: 0.92rem;
  letter-spacing: 0.08em;
  position: relative;
  padding: 6px 0;
  transition: color 0.25s ease;
}
.site-nav a::after {
  content: "";
  position: absolute;
  left: 0; right: 100%;
  bottom: 0;
  height: 2px;
  background: var(--gold-soft);
  transition: right 0.3s ease;
}
.site-nav a:hover { color: var(--gold-soft); }
.site-nav a:hover::after { right: 0; }
.site-nav .nav-cta {
  border: 1px solid rgba(230, 201, 106, 0.6);
  border-radius: 999px;
  padding: 7px 18px;
  color: var(--gold-soft);
}
.site-nav .nav-cta::after { display: none; }
.site-nav .nav-cta:hover { background: rgba(230, 201, 106, 0.12); }

.nav-toggle {
  display: none;
  flex-direction: column;
  justify-content: center;
  gap: 5px;
  width: 44px;
  height: 44px;
  background: none;
  border: none;
  cursor: pointer;
  padding: 10px;
}
.nav-toggle span {
  display: block;
  height: 2px;
  background: var(--paper);
  border-radius: 2px;
  transition: transform 0.3s ease, opacity 0.3s ease;
}
.nav-open .nav-toggle span:nth-child(1) { transform: translateY(7px) rotate(45deg); }
.nav-open .nav-toggle span:nth-child(2) { opacity: 0; }
.nav-open .nav-toggle span:nth-child(3) { transform: translateY(-7px) rotate(-45deg); }

/* ---------- Hero ---------- */
.hero {
  position: relative;
  min-height: 100svh;
  display: flex;
  align-items: center;
  background: linear-gradient(180deg, #f7f1e1 0%, var(--paper) 70%);
  overflow: hidden;
  padding: 120px 0 80px;
}
.hero-bg { position: absolute; inset: 0; pointer-events: none; }
.hero-sun {
  position: absolute;
  top: 8%;
  right: 10%;
  width: min(340px, 45vw);
  aspect-ratio: 1;
  border-radius: 50%;
  background: radial-gradient(circle at 35% 35%, #f2d98c 0%, #e9c76b 55%, rgba(233, 199, 107, 0) 72%);
  opacity: 0.85;
}
.hero-eel {
  position: absolute;
  left: 50%;
  bottom: 4%;
  transform: translateX(-46%);
  width: min(760px, 96vw);
  opacity: 0.92;
}
.eel path { filter: drop-shadow(0 6px 10px rgba(15, 26, 34, 0.18)); }

.hero-inner { position: relative; z-index: 1; }
.hero-label {
  font-size: 0.8rem;
  letter-spacing: 0.28em;
  color: var(--lake);
  font-weight: 700;
  margin-bottom: 18px;
}
.hero-title {
  font-family: var(--font-mincho);
  font-weight: 800;
  font-size: clamp(2.4rem, 6vw, 4.2rem);
  line-height: 1.25;
  letter-spacing: 0.06em;
  margin-bottom: 26px;
}
.hero-lead {
  color: var(--muted);
  max-width: 46em;
  margin-bottom: 34px;
}
.hero-actions { display: flex; gap: 16px; flex-wrap: wrap; }

.btn {
  display: inline-block;
  padding: 13px 34px;
  border-radius: 999px;
  font-weight: 700;
  font-size: 0.95rem;
  letter-spacing: 0.1em;
  transition: transform 0.25s ease, box-shadow 0.25s ease, background 0.25s ease, color 0.25s ease;
}
.btn-primary {
  background: var(--sumi);
  color: var(--gold-soft);
  box-shadow: 0 8px 20px rgba(15, 26, 34, 0.25);
}
.btn-primary:hover { transform: translateY(-2px); box-shadow: 0 12px 26px rgba(15, 26, 34, 0.3); }
.btn-ghost {
  border: 1.5px solid var(--ink);
  color: var(--ink);
}
.btn-ghost:hover { background: var(--ink); color: var(--paper); transform: translateY(-2px); }

.hero-vertical {
  position: absolute;
  top: 16%;
  right: 4%;
  writing-mode: vertical-rl;
  font-family: var(--font-mincho);
  font-size: clamp(1rem, 2vw, 1.3rem);
  letter-spacing: 0.35em;
  color: rgba(28, 39, 51, 0.4);
}

/* ---------- Sections ---------- */
.section { padding: 96px 0; }
.section-alt {
  background: var(--paper-alt);
  background-image: radial-gradient(rgba(28, 39, 51, 0.035) 1px, transparent 1px);
  background-size: 22px 22px;
}

.section-head { text-align: center; margin-bottom: 56px; }
.section-label {
  font-size: 0.78rem;
  letter-spacing: 0.32em;
  font-weight: 700;
  color: var(--gold);
  margin-bottom: 10px;
}
.section-title {
  font-family: var(--font-mincho);
  font-weight: 700;
  font-size: clamp(1.6rem, 3.6vw, 2.2rem);
  letter-spacing: 0.08em;
}
.section-title::after {
  content: "";
  display: block;
  width: 56px;
  height: 3px;
  margin: 18px auto 0;
  background: linear-gradient(90deg, var(--gold), var(--gold-soft));
  border-radius: 2px;
}

/* ---------- Features ---------- */
.feature-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 26px;
}
.feature-card {
  background: var(--white);
  border-radius: var(--radius);
  padding: 34px 28px;
  box-shadow: var(--shadow);
  border-top: 4px solid var(--gold);
  transition: transform 0.3s ease, box-shadow 0.3s ease;
}
.feature-card:hover { transform: translateY(-6px); box-shadow: 0 18px 40px rgba(15, 26, 34, 0.14); }
.feature-num {
  font-family: var(--font-mincho);
  font-size: 2rem;
  font-weight: 800;
  color: rgba(201, 162, 39, 0.55);
  line-height: 1;
  margin-bottom: 14px;
}
.feature-card h3 {
  font-family: var(--font-mincho);
  font-size: 1.15rem;
  margin-bottom: 12px;
  letter-spacing: 0.05em;
}
.feature-card p { font-size: 0.93rem; color: var(--muted); }

/* ---------- Timeline ---------- */
.timeline {
  position: relative;
  max-width: 720px;
  margin-inline: auto;
  padding-left: 30px;
}
.timeline::before {
  content: "";
  position: absolute;
  left: 8px;
  top: 8px;
  bottom: 8px;
  width: 2px;
  background: linear-gradient(180deg, var(--gold), var(--lake));
  border-radius: 2px;
}
.timeline li {
  position: relative;
  padding: 0 0 44px 28px;
}
.timeline li:last-child { padding-bottom: 0; }
.timeline li::before {
  content: "";
  position: absolute;
  left: -30px;
  top: 10px;
  width: 16px;
  height: 16px;
  border-radius: 50%;
  background: var(--paper-alt);
  border: 3px solid var(--gold);
  box-shadow: 0 0 0 4px rgba(201, 162, 39, 0.18);
}
.timeline-age {
  display: inline-block;
  font-family: var(--font-mincho);
  font-weight: 700;
  font-size: 0.85rem;
  color: var(--paper);
  background: var(--lake);
  padding: 2px 14px;
  border-radius: 999px;
  letter-spacing: 0.2em;
  margin-bottom: 10px;
}
.timeline-body h3 {
  font-family: var(--font-mincho);
  font-size: 1.1rem;
  margin-bottom: 6px;
}
.timeline-body p { font-size: 0.93rem; color: var(--muted); }

/* ---------- Menu ---------- */
.menu-grid {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 24px;
}
.menu-card {
  background: var(--white);
  border-radius: var(--radius);
  overflow: hidden;
  box-shadow: var(--shadow);
  transition: transform 0.3s ease, box-shadow 0.3s ease;
}
.menu-card:hover { transform: translateY(-6px); box-shadow: 0 18px 40px rgba(15, 26, 34, 0.14); }
.menu-visual {
  height: 120px;
  display: grid;
  place-items: center;
}
.menu-visual span {
  font-family: var(--font-mincho);
  font-size: 2.6rem;
  font-weight: 800;
  color: rgba(255, 255, 255, 0.9);
  text-shadow: 0 2px 10px rgba(15, 26, 34, 0.25);
}
.menu-visual--kabayaki { background: linear-gradient(135deg, #8a3f1d, #b05a24); }
.menu-visual--shirayaki { background: linear-gradient(135deg, #b9a582, #d8c69e); }
.menu-visual--unaju { background: linear-gradient(135deg, #5e3413, #8a5522); }
.menu-visual--pie { background: linear-gradient(135deg, #c9a227, #e6c96a); }
.menu-body { padding: 22px 22px 26px; }
.menu-tag {
  display: inline-block;
  font-size: 0.72rem;
  font-weight: 700;
  letter-spacing: 0.16em;
  color: var(--lake);
  border: 1px solid currentColor;
  border-radius: 999px;
  padding: 1px 12px;
  margin-bottom: 10px;
}
.menu-body h3 {
  font-family: var(--font-mincho);
  font-size: 1.2rem;
  margin-bottom: 8px;
}
.menu-body p { font-size: 0.88rem; color: var(--muted); }

/* ---------- Spots ---------- */
.spot-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 26px;
}
.spot-card {
  background: var(--white);
  border-radius: var(--radius);
  padding: 30px 26px;
  box-shadow: var(--shadow);
  position: relative;
  overflow: hidden;
}
.spot-card::before {
  content: "";
  position: absolute;
  inset: auto 0 0 0;
  height: 5px;
  background: linear-gradient(90deg, var(--lake), var(--gold));
}
.spot-card h3 {
  font-family: var(--font-mincho);
  font-size: 1.15rem;
  margin-bottom: 10px;
}
.spot-card p { font-size: 0.93rem; color: var(--muted); }

/* ---------- Access ---------- */
.access-list li {
  display: flex;
  gap: 20px;
  background: var(--white);
  border-radius: var(--radius);
  box-shadow: var(--shadow);
  padding: 26px 28px;
  margin-bottom: 18px;
}
.access-icon {
  flex: none;
  width: 52px;
  height: 52px;
  display: grid;
  place-items: center;
  border-radius: 50%;
  background: var(--sumi);
  color: var(--gold-soft);
  font-family: var(--font-mincho);
  font-weight: 700;
  font-size: 1.1rem;
}
.access-list h3 {
  font-family: var(--font-mincho);
  font-size: 1.05rem;
  margin-bottom: 4px;
}
.access-list p { font-size: 0.92rem; color: var(--muted); }
.access-note {
  margin-top: 26px;
  text-align: center;
  font-size: 0.9rem;
  color: var(--muted);
}

/* ---------- Footer ---------- */
.site-footer {
  background: var(--sumi);
  color: rgba(250, 246, 236, 0.8);
  padding: 48px 0 36px;
  text-align: center;
}
.footer-brand {
  font-family: var(--font-mincho);
  font-size: 1.3rem;
  font-weight: 700;
  letter-spacing: 0.2em;
  color: var(--gold-soft);
  margin-bottom: 14px;
}
.footer-note { font-size: 0.8rem; margin-bottom: 10px; }
.footer-copy { font-size: 0.78rem; letter-spacing: 0.12em; opacity: 0.7; }

/* ---------- Reveal animation ---------- */
.reveal {
  opacity: 0;
  transform: translateY(26px);
  transition: opacity 0.7s ease, transform 0.7s ease;
}
.reveal.visible { opacity: 1; transform: none; }

/* ---------- Responsive ---------- */
@media (max-width: 900px) {
  .feature-grid { grid-template-columns: 1fr; }
  .menu-grid { grid-template-columns: repeat(2, 1fr); }
  .spot-grid { grid-template-columns: 1fr; }
  .hero-vertical { display: none; }
}

@media (max-width: 640px) {
  .section { padding: 72px 0; }
  .pc-only { display: none; }

  .nav-toggle { display: flex; }
  .site-nav {
    position: absolute;
    top: 96px;
    left: 0;
    right: 0;
    flex-direction: column;
    align-items: stretch;
    gap: 0;
    background: rgba(15, 26, 34, 0.97);
    max-height: 0;
    overflow: hidden;
    transition: max-height 0.35s ease;
  }
  .nav-open .site-nav { max-height: 340px; }
  .site-nav a {
    padding: 15px 6%;
    border-top: 1px solid rgba(250, 246, 236, 0.08);
  }
  .site-nav .nav-cta {
    border: none;
    border-radius: 0;
    margin: 0;
  }
  .menu-grid { grid-template-columns: 1fr; }
  .access-list li { flex-direction: column; gap: 12px; }
  .hero { padding-top: 130px; }
}

@media (prefers-reduced-motion: reduce) {
  html { scroll-behavior: auto; }
  .reveal { opacity: 1; transform: none; transition: none; }
}