/* ─────────────────────────────────────────────
   IKKOU.CLUB — STYLES
   「和 × 静寂 × ラグジュアリー × 芸術」
   ─────────────────────────────────────────────*/

:root {
  --bg:        #0a0908;
  --bg-2:      #14110f;
  --bg-3:      #1c1916;
  --ink:       #f4f1ec;
  --ink-soft:  #c9c2b6;
  --ink-mute:  #8a8478;
  --gold:      #c9a961;
  --gold-deep: #8c7340;
  --line:      rgba(201, 169, 97, 0.22);
  --line-soft: rgba(244, 241, 236, 0.08);

  --serif-jp: "Shippori Mincho", "Yu Mincho", "YuMincho", "Hiragino Mincho ProN", serif;
  --sans-jp:  "Noto Sans JP", "Hiragino Sans", "Yu Gothic", sans-serif;
  --serif-en: "Cormorant Garamond", "Times New Roman", serif;
  --display:  "Italiana", "Cormorant Garamond", serif;

  --max: 1280px;
  --gut: clamp(20px, 4vw, 56px);

  --ease: cubic-bezier(.2, .7, .2, 1);
}

* { box-sizing: border-box; margin: 0; padding: 0; }
html { scroll-behavior: smooth; }
body {
  background: var(--bg);
  color: var(--ink);
  font-family: var(--sans-jp);
  font-weight: 300;
  font-size: 15px;
  line-height: 1.85;
  letter-spacing: 0.02em;
  -webkit-font-smoothing: antialiased;
  text-rendering: optimizeLegibility;
  overflow-x: hidden;
}
img, picture, svg { display: block; max-width: 100%; }
a { color: inherit; text-decoration: none; }
button { font: inherit; color: inherit; background: none; border: 0; cursor: pointer; }

::selection { background: var(--gold); color: var(--bg); }

/* ─────────────── ロード遮幕 ─────────────── */
.curtain {
  position: fixed; inset: 0;
  background: var(--bg);
  z-index: 200;
  display: grid; place-items: center;
  transition: opacity 1.2s var(--ease), visibility 1.2s var(--ease);
}
.curtain.is-hidden { opacity: 0; visibility: hidden; pointer-events: none; }
.curtain-inner { text-align: center; }
.curtain-mark {
  display: block;
  height: clamp(60px, 9vw, 110px);
  width: auto;
  margin: 0 auto;
  opacity: 0;
  animation: fadeUp 1.6s var(--ease) 0.2s forwards;
}
.curtain-sub {
  display: block;
  margin-top: 16px;
  font-family: var(--display);
  font-size: clamp(12px, 1.2vw, 16px);
  color: var(--ink-mute);
  letter-spacing: 0.6em;
  opacity: 0;
  animation: fadeUp 1.6s var(--ease) 0.7s forwards;
}

@keyframes fadeUp {
  from { opacity: 0; transform: translateY(14px); }
  to   { opacity: 1; transform: translateY(0); }
}

/* ─────────────── NAV ─────────────── */
.nav {
  position: fixed; top: 0; left: 0; right: 0;
  z-index: 100;
  display: flex; align-items: center; justify-content: space-between;
  padding: 22px var(--gut);
  transition: background .5s var(--ease), padding .5s var(--ease), backdrop-filter .5s var(--ease);
}
.nav.is-scrolled {
  background: rgba(10, 9, 8, 0.78);
  backdrop-filter: blur(16px) saturate(1.1);
  -webkit-backdrop-filter: blur(16px) saturate(1.1);
  padding: 14px var(--gut);
  border-bottom: 1px solid var(--line-soft);
}
.nav-logo {
  display: inline-flex; align-items: center; gap: 14px;
  line-height: 1;
}
.logo-mark {
  height: 26px;
  width: auto;
  display: block;
}
.nav.is-scrolled .logo-mark { height: 22px; transition: height .5s var(--ease); }
.logo-mark { transition: height .5s var(--ease); }
.logo-roman {
  font-family: var(--display);
  font-size: 11px;
  color: var(--ink-mute);
  letter-spacing: 0.55em;
}
.nav-links {
  display: flex; align-items: center; gap: 30px;
  font-family: var(--display);
  font-size: 12px;
  letter-spacing: 0.35em;
  text-transform: uppercase;
  color: var(--ink-soft);
}
.nav-links a { position: relative; padding: 6px 0; transition: color .4s var(--ease); }
.nav-links a:hover { color: var(--gold); }
.nav-links a::after {
  content: ""; position: absolute; left: 0; right: 0; bottom: 0;
  height: 1px; background: var(--gold);
  transform: scaleX(0); transform-origin: left;
  transition: transform .5s var(--ease);
}
.nav-links a:hover::after { transform: scaleX(1); }
.nav-cta {
  border: 1px solid var(--line);
  padding: 10px 22px !important;
  color: var(--gold) !important;
  transition: background .4s var(--ease), color .4s var(--ease) !important;
}
.nav-cta:hover { background: var(--gold); color: var(--bg) !important; }
.nav-cta::after { display: none; }

.nav-toggle {
  display: none;
  width: 36px; height: 28px;
  position: relative;
}
.nav-toggle span {
  position: absolute; left: 0; right: 0;
  height: 1px; background: var(--gold);
  transition: transform .4s var(--ease), opacity .3s var(--ease), top .4s var(--ease);
}
.nav-toggle span:nth-child(1) { top: 4px; }
.nav-toggle span:nth-child(2) { top: 14px; }
.nav-toggle span:nth-child(3) { top: 24px; }
.nav-toggle[aria-expanded="true"] span:nth-child(1) { top: 14px; transform: rotate(45deg); }
.nav-toggle[aria-expanded="true"] span:nth-child(2) { opacity: 0; }
.nav-toggle[aria-expanded="true"] span:nth-child(3) { top: 14px; transform: rotate(-45deg); }

/* ─────────────── HERO ─────────────── */
.hero {
  position: relative;
  min-height: 100svh;
  display: grid; place-items: center;
  overflow: hidden;
  isolation: isolate;
}
.hero-bg { position: absolute; inset: 0; z-index: -1; }
.hero-layer {
  position: absolute; inset: -10%;
  background-position: center;
  background-size: cover;
  filter: saturate(0.7) contrast(1.05);
}
.hero-layer-1 {
  background:
    radial-gradient(ellipse at 20% 30%, rgba(201, 169, 97, 0.22), transparent 55%),
    radial-gradient(ellipse at 80% 80%, rgba(140, 115, 64, 0.28), transparent 60%),
    radial-gradient(ellipse at 60% 40%, rgba(40, 30, 20, 0.6), transparent 70%),
    linear-gradient(180deg, #0c0a08 0%, #110d09 60%, #050403 100%);
  animation: heroDrift 22s var(--ease) infinite alternate;
}
.hero-layer-2 {
  background:
    radial-gradient(circle at 30% 70%, rgba(201, 169, 97, 0.10), transparent 25%),
    radial-gradient(circle at 70% 20%, rgba(201, 169, 97, 0.08), transparent 30%);
  mix-blend-mode: screen;
  animation: heroDrift 30s var(--ease) -8s infinite alternate-reverse;
}
@keyframes heroDrift {
  0%   { transform: translate3d(0,0,0) scale(1.02); }
  100% { transform: translate3d(-2%, 1%, 0) scale(1.08); }
}
.hero-grain {
  position: absolute; inset: 0;
  background-image:
    repeating-radial-gradient(circle at 13% 27%, rgba(255,255,255,0.018) 0 1px, transparent 1px 4px),
    repeating-radial-gradient(circle at 67% 73%, rgba(255,255,255,0.013) 0 1px, transparent 1px 5px);
  mix-blend-mode: overlay;
  opacity: 0.6;
  pointer-events: none;
}
.hero-vignette {
  position: absolute; inset: 0;
  background:
    radial-gradient(ellipse at center, transparent 35%, rgba(0,0,0,0.55) 90%);
  pointer-events: none;
}

.hero-content {
  text-align: center;
  padding: 0 var(--gut);
  max-width: 920px;
  z-index: 2;
}
.hero-logo {
  display: block;
  height: clamp(70px, 9vw, 120px);
  width: auto;
  margin: 0 auto 40px;
  opacity: 0;
  animation: fadeUp 1.6s var(--ease) 1.4s forwards;
}
.hero-eyebrow {
  font-family: var(--display);
  font-size: 11px;
  letter-spacing: 0.7em;
  color: var(--gold);
  margin-bottom: 38px;
  opacity: 0;
  animation: fadeUp 1.4s var(--ease) 1.6s forwards;
}
.hero-eyebrow span { display: inline-block; padding: 0 2px; }
.hero-title {
  font-family: var(--serif-jp);
  font-weight: 500;
  font-size: clamp(28px, 6vw, 76px);
  line-height: 1.25;
  letter-spacing: 0.06em;
  color: var(--ink);
}
.hero-title .line {
  display: block;
  white-space: nowrap;
  opacity: 0;
  transform: translateY(20px);
  animation: fadeUp 1.6s var(--ease) 1.9s forwards;
}
.hero-title em {
  font-style: normal;
  color: var(--gold);
  position: relative;
  padding: 0 0.05em;
}
.hero-title em::after {
  content: "";
  position: absolute; left: 0; right: 0; bottom: -8px;
  height: 1px;
  background: var(--gold);
  transform: scaleX(0);
  transform-origin: left;
  animation: ruleIn 1.6s var(--ease) 2.6s forwards;
}
@keyframes ruleIn { to { transform: scaleX(1); } }

.hero-lead {
  font-family: var(--serif-jp);
  font-size: clamp(14px, 1.5vw, 17px);
  color: var(--ink-soft);
  margin-top: 36px;
  letter-spacing: 0.18em;
  opacity: 0;
  animation: fadeUp 1.4s var(--ease) 2.6s forwards;
}
.hero-meta {
  margin-top: 50px;
  display: inline-flex;
  gap: 18px;
  align-items: center;
  font-family: var(--display);
  font-size: 11px;
  letter-spacing: 0.45em;
  color: var(--ink-mute);
  opacity: 0;
  animation: fadeUp 1.4s var(--ease) 2.9s forwards;
}
.hero-meta .dot { color: var(--gold-deep); }

.hero-side {
  position: absolute;
  top: 50%;
  transform: translateY(-50%);
  font-family: var(--display);
  font-size: 11px;
  letter-spacing: 0.6em;
  color: var(--ink-mute);
  opacity: 0;
  animation: fadeUp 1.4s var(--ease) 3.1s forwards;
}
.hero-side-left {
  left: 36px;
  writing-mode: vertical-rl;
  font-family: var(--serif-jp);
  letter-spacing: 0.5em;
  color: var(--gold-deep);
}
.hero-side-right {
  right: 36px;
  writing-mode: vertical-rl;
}

.hero-scroll {
  position: absolute;
  bottom: 36px;
  left: 50%;
  transform: translateX(-50%);
  display: flex; flex-direction: column; align-items: center; gap: 12px;
  font-family: var(--display);
  font-size: 10px;
  letter-spacing: 0.6em;
  color: var(--ink-mute);
  opacity: 0;
  animation: fadeUp 1.4s var(--ease) 3.4s forwards;
}
.hero-scroll .line-down {
  width: 1px; height: 56px;
  background: linear-gradient(180deg, var(--gold) 0%, transparent 100%);
  animation: lineDown 2.4s var(--ease) infinite;
  transform-origin: top;
}
@keyframes lineDown {
  0%   { transform: scaleY(0); opacity: 0; }
  40%  { opacity: 1; }
  100% { transform: scaleY(1); opacity: 0; }
}

/* ─────────────── SECTION COMMON ─────────────── */
.section {
  position: relative;
  padding: clamp(96px, 14vw, 180px) var(--gut);
  max-width: var(--max);
  margin: 0 auto;
}
.section-head {
  margin-bottom: clamp(50px, 7vw, 96px);
}
.section-head-center { text-align: center; }
.section-num {
  display: inline-block;
  font-family: var(--display);
  font-size: 11px;
  letter-spacing: 0.5em;
  color: var(--gold);
  margin-right: 14px;
}
.section-en {
  font-family: var(--display);
  font-size: 11px;
  letter-spacing: 0.5em;
  color: var(--ink-mute);
  text-transform: uppercase;
}
.section-title {
  margin-top: 22px;
  font-family: var(--serif-jp);
  font-weight: 500;
  font-size: clamp(28px, 4.2vw, 50px);
  line-height: 1.4;
  letter-spacing: 0.12em;
  color: var(--ink);
}
.section-sub {
  margin-top: 22px;
  font-family: var(--serif-jp);
  color: var(--ink-soft);
  letter-spacing: 0.14em;
  font-size: clamp(13px, 1.2vw, 15px);
}

/* fade-in on scroll */
.fade-up {
  opacity: 0;
  transform: translateY(28px);
  transition: opacity 1.1s var(--ease), transform 1.1s var(--ease);
}
.fade-up.is-visible { opacity: 1; transform: translateY(0); }

/* ─────────────── CONCEPT ─────────────── */
.section-concept .concept-body {
  display: grid;
  grid-template-columns: 1fr 1.4fr;
  gap: clamp(40px, 6vw, 96px);
  align-items: start;
}
.lead-quote {
  font-family: var(--serif-jp);
  font-size: clamp(26px, 3.6vw, 42px);
  line-height: 1.55;
  letter-spacing: 0.14em;
  color: var(--ink);
  border-left: 1px solid var(--line);
  padding-left: clamp(20px, 2vw, 36px);
}
.lead-quote em {
  font-style: normal;
  color: var(--gold);
}
.concept-prose p {
  font-family: var(--serif-jp);
  font-size: clamp(14px, 1.15vw, 16px);
  line-height: 2.2;
  letter-spacing: 0.12em;
  color: var(--ink-soft);
  margin-bottom: 1.6em;
}
.concept-prose em {
  font-style: normal;
  color: var(--gold);
  border-bottom: 1px solid var(--line);
}

/* ─────────────── EXPERIENCE ─────────────── */
.section-experience { padding-top: clamp(40px, 6vw, 80px); }
.exp-grid {
  display: grid;
  grid-template-columns: repeat(5, 1fr);
  gap: clamp(20px, 2vw, 36px);
}
.exp-card {
  position: relative;
  padding: 36px 24px 32px;
  border: 1px solid var(--line-soft);
  background: linear-gradient(180deg, rgba(20,17,15,0.6), rgba(10,9,8,0.4));
  transition: border-color .6s var(--ease), transform .6s var(--ease), background .6s var(--ease);
}
.exp-card:hover {
  border-color: var(--line);
  transform: translateY(-6px);
  background: linear-gradient(180deg, rgba(28,25,22,0.7), rgba(14,11,9,0.5));
}
.exp-no {
  font-family: var(--display);
  font-size: 12px;
  letter-spacing: 0.3em;
  color: var(--gold);
}
.exp-card h3 {
  margin-top: 16px;
  font-family: var(--display);
  font-size: 22px;
  letter-spacing: 0.18em;
  color: var(--ink);
  font-weight: 400;
}
.exp-jp {
  font-family: var(--serif-jp);
  font-size: 13px;
  letter-spacing: 0.4em;
  color: var(--gold-deep);
  margin-top: 6px;
  margin-bottom: 22px;
}
.exp-text {
  font-family: var(--serif-jp);
  font-size: 13px;
  line-height: 2;
  letter-spacing: 0.08em;
  color: var(--ink-soft);
}

/* ─────────────── MEMBERSHIP ─────────────── */
.section-membership {
  position: relative;
  max-width: none;
  padding-left: 0; padding-right: 0;
}
.section-membership .section-head,
.section-membership .mem-body {
  max-width: var(--max);
  margin-left: auto; margin-right: auto;
  padding-left: var(--gut); padding-right: var(--gut);
}
.mem-bg {
  position: absolute; inset: 0; z-index: 0;
  background:
    radial-gradient(ellipse at 50% 0%, rgba(201, 169, 97, 0.06), transparent 60%),
    linear-gradient(180deg, var(--bg) 0%, var(--bg-2) 50%, var(--bg) 100%);
  pointer-events: none;
}
.section-membership > * { position: relative; z-index: 1; }
.mem-lead {
  font-family: var(--serif-jp);
  font-size: clamp(15px, 1.4vw, 18px);
  line-height: 2.2;
  letter-spacing: 0.14em;
  color: var(--ink-soft);
  max-width: 720px;
  margin-bottom: 64px;
}
.mem-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: clamp(20px, 2.4vw, 36px);
}
.mem-card {
  padding: 44px 32px;
  border: 1px solid var(--line-soft);
  background: linear-gradient(180deg, rgba(20,17,15,0.7), rgba(10,9,8,0.5));
  transition: border-color .6s var(--ease), transform .6s var(--ease);
}
.mem-card:hover { border-color: var(--line); transform: translateY(-4px); }
.mem-card-accent {
  border-color: var(--line);
  background:
    linear-gradient(180deg, rgba(28,25,22,0.8), rgba(14,11,9,0.6)),
    radial-gradient(ellipse at top, rgba(201,169,97,0.08), transparent 60%);
}
.mem-card h3 {
  font-family: var(--display);
  font-size: 22px;
  letter-spacing: 0.18em;
  color: var(--ink);
  font-weight: 400;
}
.mem-card .mem-jp {
  font-family: var(--serif-jp);
  font-size: 13px;
  letter-spacing: 0.4em;
  color: var(--gold);
  margin-top: 6px;
  padding-bottom: 22px;
  margin-bottom: 22px;
  border-bottom: 1px solid var(--line-soft);
}
.mem-card ul { list-style: none; }
.mem-card li {
  font-family: var(--serif-jp);
  font-size: 13.5px;
  line-height: 1.9;
  letter-spacing: 0.1em;
  color: var(--ink-soft);
  padding-left: 18px;
  position: relative;
  margin-bottom: 12px;
}
.mem-card li::before {
  content: "";
  position: absolute;
  left: 0; top: 12px;
  width: 8px; height: 1px;
  background: var(--gold);
}
.mem-note {
  margin-top: 50px;
  font-family: var(--serif-jp);
  font-size: 12px;
  letter-spacing: 0.12em;
  color: var(--ink-mute);
  line-height: 1.9;
}

/* ─────────────── PERFORMANCE ─────────────── */
.perf-list { border-top: 1px solid var(--line-soft); }
.perf-row {
  display: grid;
  grid-template-columns: 200px 200px 1fr;
  gap: 28px;
  align-items: baseline;
  padding: 32px 0;
  border-bottom: 1px solid var(--line-soft);
  transition: padding .5s var(--ease), background .5s var(--ease);
}
.perf-row:hover {
  background: linear-gradient(90deg, transparent, rgba(201,169,97,0.04), transparent);
  padding: 32px 24px;
}
.perf-jp {
  font-family: var(--serif-jp);
  font-size: clamp(20px, 2vw, 26px);
  letter-spacing: 0.22em;
  color: var(--ink);
}
.perf-en {
  font-family: var(--display);
  font-size: 13px;
  letter-spacing: 0.4em;
  color: var(--gold);
}
.perf-desc {
  font-family: var(--serif-jp);
  font-size: 13.5px;
  line-height: 1.9;
  letter-spacing: 0.08em;
  color: var(--ink-soft);
}

/* ─────────────── GALLERY ─────────────── */
.gallery-grid {
  display: grid;
  grid-template-columns: repeat(6, 1fr);
  grid-template-rows: 260px 260px;
  gap: 14px;
}
.gal {
  position: relative;
  overflow: hidden;
  background-size: cover;
  background-position: center;
  filter: saturate(0.85) contrast(1.05);
  transition: transform .8s var(--ease), filter .8s var(--ease);
}
.gal:hover { transform: scale(1.02); filter: saturate(1.05) contrast(1.08); }
.gal::after {
  content: "";
  position: absolute; inset: 0;
  background: linear-gradient(180deg, transparent 50%, rgba(0,0,0,0.6) 100%);
}
.gal figcaption {
  position: absolute; left: 18px; bottom: 16px;
  font-family: var(--display);
  font-size: 11px;
  letter-spacing: 0.4em;
  color: var(--gold);
  z-index: 1;
}

/* Image placeholders — gradient/abstract, no external image deps */
.gal-1 { grid-column: 1 / 4; grid-row: 1 / 2;
  background:
    radial-gradient(ellipse at 30% 50%, rgba(201,169,97,0.45), transparent 50%),
    radial-gradient(ellipse at 80% 30%, rgba(140,115,64,0.35), transparent 60%),
    linear-gradient(135deg, #1a1411, #0d0a08);
}
.gal-2 { grid-column: 4 / 7; grid-row: 1 / 2;
  background:
    radial-gradient(circle at 70% 60%, rgba(201,169,97,0.25), transparent 55%),
    linear-gradient(135deg, #15110e, #060504 90%);
}
.gal-3 { grid-column: 1 / 3; grid-row: 2 / 3;
  background:
    radial-gradient(circle at 50% 50%, rgba(201,169,97,0.5), transparent 35%),
    radial-gradient(circle at 50% 50%, rgba(255,200,120,0.18), transparent 70%),
    #0c0908;
}
.gal-4 { grid-column: 3 / 5; grid-row: 2 / 3;
  background:
    linear-gradient(170deg, rgba(201,169,97,0.18) 0%, transparent 40%),
    linear-gradient(180deg, #181412, #0a0807);
}
.gal-5 { grid-column: 5 / 6; grid-row: 2 / 3;
  background:
    linear-gradient(0deg, rgba(201,169,97,0.10) 0%, transparent 50%),
    #0a0908;
}
.gal-6 { grid-column: 6 / 7; grid-row: 2 / 3;
  background:
    radial-gradient(circle at 50% 80%, rgba(201,169,97,0.35), transparent 50%),
    linear-gradient(0deg, #1c1612 0%, #08060a 100%);
}
.gallery-note {
  margin-top: 24px;
  font-family: var(--serif-jp);
  font-size: 11px;
  letter-spacing: 0.18em;
  color: var(--ink-mute);
}

/* ─────────────── ACCESS ─────────────── */
.access-grid {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: clamp(40px, 5vw, 80px);
  align-items: start;
}
.access-info dl {
  display: grid;
  grid-template-columns: 110px 1fr;
  gap: 28px 32px;
}
.access-info dt {
  font-family: var(--display);
  font-size: 11px;
  letter-spacing: 0.4em;
  color: var(--gold);
  padding-top: 6px;
}
.access-info dd {
  font-family: var(--serif-jp);
  font-size: 14.5px;
  line-height: 2;
  letter-spacing: 0.1em;
  color: var(--ink-soft);
  border-left: 1px solid var(--line-soft);
  padding-left: 28px;
}

.access-card {
  aspect-ratio: 1 / 1;
  position: relative;
  border: 1px solid var(--line-soft);
  background:
    radial-gradient(ellipse at 50% 50%, rgba(201,169,97,0.08), transparent 60%),
    linear-gradient(135deg, var(--bg-2), var(--bg));
  display: flex; flex-direction: column; align-items: center; justify-content: center;
}
.access-map {
  position: relative;
  width: 70%; height: 70%;
}
.map-label {
  position: absolute; top: 0; left: 0;
  font-family: var(--display);
  font-size: 11px;
  letter-spacing: 0.45em;
  color: var(--ink-mute);
  line-height: 1.4;
}
.map-pin {
  position: absolute; top: 50%; left: 50%;
  transform: translate(-50%, -50%);
  color: var(--gold);
  font-size: 18px;
  animation: pinPulse 2.4s var(--ease) infinite;
}
@keyframes pinPulse {
  0%, 100% { transform: translate(-50%, -50%) scale(1); opacity: 1; }
  50%      { transform: translate(-50%, -50%) scale(1.4); opacity: 0.6; }
}
.map-frame {
  position: absolute; inset: 0;
  border: 1px dashed var(--line);
}
.access-tag {
  position: absolute;
  bottom: 22px; left: 0; right: 0;
  text-align: center;
  font-family: var(--display);
  font-size: 11px;
  letter-spacing: 0.45em;
  color: var(--gold);
}

/* ─────────────── CONTACT ─────────────── */
.contact-form {
  max-width: 760px;
  margin: 0 auto;
  display: grid;
  gap: 28px;
}
.form-row {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 28px;
}
.contact-form label {
  display: grid;
  gap: 10px;
}
.contact-form label > span {
  font-family: var(--display);
  font-size: 11px;
  letter-spacing: 0.4em;
  color: var(--gold);
}
.contact-form input,
.contact-form select,
.contact-form textarea {
  font: inherit;
  font-family: var(--serif-jp);
  color: var(--ink);
  background: transparent;
  border: 0;
  border-bottom: 1px solid var(--line-soft);
  padding: 14px 2px;
  letter-spacing: 0.06em;
  transition: border-color .4s var(--ease), background .4s var(--ease);
}
.contact-form select { color: var(--ink-soft); }
.contact-form textarea { resize: vertical; min-height: 120px; }
.contact-form input:focus,
.contact-form select:focus,
.contact-form textarea:focus {
  outline: none;
  border-color: var(--gold);
}
.contact-form input::placeholder,
.contact-form textarea::placeholder { color: var(--ink-mute); }

.form-submit {
  margin-top: 16px;
  align-self: end;
  width: fit-content;
  padding: 18px 44px;
  border: 1px solid var(--gold);
  color: var(--gold);
  font-family: var(--display);
  font-size: 13px;
  letter-spacing: 0.45em;
  display: inline-flex; align-items: center; gap: 18px;
  transition: background .5s var(--ease), color .5s var(--ease), letter-spacing .5s var(--ease);
}
.form-submit:hover {
  background: var(--gold);
  color: var(--bg);
  letter-spacing: 0.55em;
}
.form-submit .arr { transition: transform .5s var(--ease); }
.form-submit:hover .arr { transform: translateX(6px); }
.form-note {
  font-family: var(--serif-jp);
  font-size: 11.5px;
  letter-spacing: 0.12em;
  color: var(--ink-mute);
}

/* ─────────────── FOOTER ─────────────── */
.footer {
  padding: 90px var(--gut) 50px;
  text-align: center;
  border-top: 1px solid var(--line-soft);
  background: var(--bg);
}
.footer-mark {
  display: inline-flex; align-items: center; gap: 16px;
}
.logo-mark-footer { height: 34px; }
.footer-tag {
  margin-top: 22px;
  font-family: var(--serif-jp);
  font-size: 14px;
  letter-spacing: 0.4em;
  color: var(--gold);
}
.footer-meta {
  margin-top: 32px;
  font-family: var(--display);
  font-size: 10.5px;
  letter-spacing: 0.4em;
  color: var(--ink-mute);
}
.footer-meta .dot { color: var(--gold-deep); margin: 0 4px; }

/* ─────────────── RESPONSIVE ─────────────── */
@media (max-width: 980px) {
  .hero-side { display: none; }
  .section-concept .concept-body { grid-template-columns: 1fr; }
  .exp-grid { grid-template-columns: repeat(2, 1fr); }
  .mem-grid { grid-template-columns: 1fr; }
  .perf-row { grid-template-columns: 1fr; gap: 8px; padding: 24px 0; }
  .perf-row:hover { padding: 24px 12px; }
  .gallery-grid {
    grid-template-columns: repeat(2, 1fr);
    grid-template-rows: repeat(3, 200px);
  }
  .gal-1, .gal-2, .gal-3, .gal-4, .gal-5, .gal-6 { grid-column: auto; grid-row: auto; }
  .access-grid { grid-template-columns: 1fr; }
}

@media (max-width: 720px) {
  .nav-links { display: none; }
  .nav-toggle { display: block; }
  .nav-links.is-open {
    display: flex;
    position: absolute; top: 100%; left: 0; right: 0;
    flex-direction: column;
    background: rgba(10,9,8,0.96);
    backdrop-filter: blur(16px);
    padding: 30px var(--gut);
    gap: 22px;
    border-bottom: 1px solid var(--line-soft);
  }
  .exp-grid { grid-template-columns: 1fr; }
  .form-row { grid-template-columns: 1fr; }
  .access-info dl { grid-template-columns: 1fr; gap: 6px 0; }
  .access-info dd { border-left: 0; padding-left: 0; padding-bottom: 16px; border-bottom: 1px solid var(--line-soft); }
  .access-info dt { padding-top: 16px; }
  .hero-eyebrow { letter-spacing: 0.5em; }
  .hero-meta { gap: 10px; flex-wrap: wrap; justify-content: center; }
}