/* =============================================================
   MONO SAUNA & SPA — デモサイト共通スタイル
   モノトーン（グレー / ブラック）構成
   ============================================================= */

/* ---------- Tokens ---------- */
:root {
  --bg:        #0a0a0b;
  --bg-2:      #101012;
  --bg-3:      #16161a;
  --bg-4:      #1d1d22;
  --line:      #2a2a30;
  --line-soft: #1e1e23;
  --text:      #eaeaec;
  --text-2:    #b6b6bd;
  --muted:     #7d7d86;
  --white:     #ffffff;

  --header-h: 76px;
  --container: 1180px;
  --radius: 2px;

  --ease: cubic-bezier(0.22, 0.61, 0.36, 1);

  --font-sans: "Helvetica Neue", "Segoe UI", "Hiragino Kaku Gothic ProN",
               "Yu Gothic UI", "Noto Sans JP", "Meiryo", system-ui, sans-serif;
  --font-serif: "Times New Roman", "Yu Mincho", "Hiragino Mincho ProN",
                "Noto Serif JP", serif;
}

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

html { -webkit-text-size-adjust: 100%; scroll-behavior: smooth; }

body {
  margin: 0;
  background: var(--bg);
  color: var(--text);
  font-family: var(--font-sans);
  font-size: 15px;
  line-height: 1.9;
  letter-spacing: 0.04em;
  font-feature-settings: "palt" 1;
  -webkit-font-smoothing: antialiased;
  overflow-x: hidden;
}

h1, h2, h3, h4, p, figure, blockquote, dl, dd { margin: 0; }
ul, ol { margin: 0; padding: 0; list-style: none; }
img { max-width: 100%; height: auto; display: block; }
a { color: inherit; text-decoration: none; }
button { font: inherit; color: inherit; background: none; border: 0; cursor: pointer; }

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

/* ---------- Layout ---------- */
.container {
  width: 100%;
  max-width: var(--container);
  margin-inline: auto;
  padding-inline: 24px;
}

.section { padding-block: clamp(80px, 12vw, 150px); }
.section--tight { padding-block: clamp(60px, 8vw, 100px); }
.section--alt { background: var(--bg-2); }
.section--line { border-top: 1px solid var(--line-soft); }

/* ---------- Typography ---------- */
.eyebrow {
  display: flex;
  align-items: center;
  gap: 14px;
  font-size: 11px;
  letter-spacing: 0.26em;
  text-transform: uppercase;
  color: var(--muted);
  margin-bottom: 22px;
}
.eyebrow::before {
  content: "";
  width: 36px;
  height: 1px;
  background: var(--line);
  flex: none;
}

.headline {
  font-size: clamp(26px, 4.2vw, 46px);
  line-height: 1.45;
  font-weight: 400;
  letter-spacing: 0.06em;
}

.headline--en {
  font-family: var(--font-serif);
  font-style: italic;
  letter-spacing: 0.02em;
}

.lead {
  color: var(--text-2);
  font-size: clamp(14px, 1.4vw, 16px);
  line-height: 2.15;
  max-width: 62ch;
}

.section-head { margin-bottom: clamp(44px, 6vw, 72px); }
.section-head .lead { margin-top: 26px; }

.num {
  font-family: var(--font-serif);
  font-size: 12px;
  letter-spacing: 0.2em;
  color: var(--muted);
}

/* ---------- Buttons ---------- */
.btn {
  --btn-fg: var(--text);
  position: relative;
  display: inline-flex;
  align-items: center;
  gap: 14px;
  padding: 17px 34px;
  border: 1px solid var(--line);
  color: var(--btn-fg);
  font-size: 12px;
  letter-spacing: 0.2em;
  text-transform: uppercase;
  overflow: hidden;
  transition: color 0.45s var(--ease), border-color 0.45s var(--ease);
}
.btn::after {
  content: "";
  position: absolute;
  inset: 0;
  background: var(--text);
  transform: scaleX(0);
  transform-origin: right;
  transition: transform 0.5s var(--ease);
  z-index: -1;
}
.btn > * { position: relative; }
.btn span { position: relative; z-index: 1; }
.btn .arrow {
  position: relative;
  z-index: 1;
  width: 22px;
  height: 1px;
  background: currentColor;
  transition: width 0.45s var(--ease);
}
.btn:hover { color: var(--bg); border-color: var(--text); }
.btn:hover::after { transform: scaleX(1); transform-origin: left; }
.btn:hover .arrow { width: 34px; }
.btn { isolation: isolate; }

.btn--solid { background: var(--text); color: var(--bg); border-color: var(--text); }
.btn--solid:hover { background: transparent; color: var(--text); }
.btn--solid::after { background: var(--bg); }

.btn-row { display: flex; flex-wrap: wrap; gap: 16px; margin-top: 40px; }

/* テキストリンク */
.link {
  display: inline-flex;
  align-items: center;
  gap: 12px;
  font-size: 12px;
  letter-spacing: 0.2em;
  text-transform: uppercase;
  color: var(--text-2);
  padding-bottom: 6px;
  border-bottom: 1px solid var(--line);
  transition: color 0.4s var(--ease), border-color 0.4s var(--ease);
}
.link:hover { color: var(--white); border-color: var(--text); }

/* =============================================================
   Header
   ============================================================= */
.header {
  position: fixed;
  inset: 0 0 auto 0;
  z-index: 100;
  height: var(--header-h);
  display: flex;
  align-items: center;
  transition: background 0.5s var(--ease), border-color 0.5s var(--ease);
  border-bottom: 1px solid transparent;
}
.header.is-scrolled {
  background: rgba(10, 10, 11, 0.82);
  backdrop-filter: blur(14px);
  -webkit-backdrop-filter: blur(14px);
  border-bottom-color: var(--line-soft);
}

.header .container {
  display: flex;
  align-items: center;
  justify-content: space-between;
  max-width: 1440px;
}

.logo { display: flex; align-items: baseline; gap: 10px; }
.logo__mark {
  font-family: var(--font-serif);
  font-size: 22px;
  letter-spacing: 0.34em;
  line-height: 1;
}
.logo__sub {
  font-size: 9px;
  letter-spacing: 0.28em;
  color: var(--muted);
  text-transform: uppercase;
}

.nav { display: flex; align-items: center; gap: 38px; }
.nav__link {
  position: relative;
  font-size: 12px;
  letter-spacing: 0.16em;
  color: var(--text-2);
  padding-block: 6px;
  transition: color 0.35s var(--ease);
}
.nav__link::after {
  content: "";
  position: absolute;
  left: 0;
  bottom: 0;
  width: 100%;
  height: 1px;
  background: currentColor;
  transform: scaleX(0);
  transform-origin: right;
  transition: transform 0.4s var(--ease);
}
.nav__link:hover { color: var(--white); }
.nav__link:hover::after { transform: scaleX(1); transform-origin: left; }
.nav__link.is-active { color: var(--white); }
.nav__link.is-active::after { transform: scaleX(1); }

.nav__cta {
  padding: 12px 24px;
  border: 1px solid var(--line);
  font-size: 11px;
  letter-spacing: 0.2em;
  text-transform: uppercase;
  transition: background 0.4s var(--ease), color 0.4s var(--ease), border-color 0.4s var(--ease);
}
.nav__cta:hover { background: var(--text); color: var(--bg); border-color: var(--text); }

/* ハンバーガー */
.burger {
  display: none;
  width: 30px;
  height: 18px;
  position: relative;
  z-index: 110;
}
.burger span {
  position: absolute;
  left: 0;
  width: 100%;
  height: 1px;
  background: var(--text);
  transition: transform 0.45s var(--ease), opacity 0.3s var(--ease);
}
.burger span:nth-child(1) { top: 0; }
.burger span:nth-child(2) { top: 50%; }
.burger span:nth-child(3) { bottom: 0; }
.burger.is-open span:nth-child(1) { top: 50%; transform: rotate(45deg); }
.burger.is-open span:nth-child(2) { opacity: 0; }
.burger.is-open span:nth-child(3) { bottom: auto; top: 50%; transform: rotate(-45deg); }

/* モバイルメニュー */
.drawer {
  position: fixed;
  inset: 0;
  z-index: 105;
  background: var(--bg);
  display: flex;
  flex-direction: column;
  justify-content: center;
  padding: 0 32px;
  opacity: 0;
  visibility: hidden;
  transition: opacity 0.5s var(--ease), visibility 0.5s var(--ease);
}
.drawer.is-open { opacity: 1; visibility: visible; }
.drawer__list { display: flex; flex-direction: column; gap: 4px; }
.drawer__list a {
  display: flex;
  align-items: baseline;
  gap: 18px;
  padding: 18px 0;
  border-bottom: 1px solid var(--line-soft);
  font-size: 19px;
  letter-spacing: 0.12em;
}
.drawer__list .num { font-size: 10px; }
.drawer__foot {
  margin-top: 48px;
  font-size: 12px;
  letter-spacing: 0.14em;
  color: var(--muted);
  line-height: 2.2;
}

/* =============================================================
   Visual（画像プレースホルダ：CSSグラデーション）
   ============================================================= */
.visual {
  position: relative;
  overflow: hidden;
  background: var(--bg-3);
  isolation: isolate;
}

/* 写真：モノトーンに統一して敷く（背景グラデーションは読込前のフォールバック） */
.visual img {
  position: absolute;
  inset: 0;
  z-index: -1;
  width: 100%;
  height: 100%;
  object-fit: cover;
  filter: grayscale(1) contrast(1.06) brightness(0.78);
  transition: transform 1.1s var(--ease), filter 0.6s var(--ease);
}
/* 写真の上にかける減光レイヤー（文字の可読性を確保） */
.visual::before {
  content: "";
  position: absolute;
  inset: 0;
  z-index: 0;
  background: linear-gradient(180deg, rgba(8,8,10,0.12) 0%, rgba(8,8,10,0.35) 60%, rgba(8,8,10,0.7) 100%);
  pointer-events: none;
}
a.card:hover .visual img { transform: scale(1.05); filter: grayscale(1) contrast(1.06) brightness(0.9); }

.visual::after {
  /* 粒状ノイズ */
  content: "";
  position: absolute;
  inset: 0;
  opacity: 0.32;
  mix-blend-mode: overlay;
  background-image: url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' width='160' height='160'%3E%3Cfilter id='n'%3E%3CfeTurbulence type='fractalNoise' baseFrequency='0.85' numOctaves='3'/%3E%3C/filter%3E%3Crect width='160' height='160' filter='url(%23n)' opacity='0.5'/%3E%3C/svg%3E");
  pointer-events: none;
}

/* バリエーション：サウナ室（熱・光の陰影） */
.visual--sauna {
  background:
    radial-gradient(120% 80% at 78% 18%, rgba(255,255,255,0.16), transparent 55%),
    radial-gradient(90% 70% at 20% 90%, rgba(255,255,255,0.05), transparent 60%),
    linear-gradient(160deg, #1f1f24 0%, #131316 48%, #0c0c0e 100%);
}
/* 水風呂 */
.visual--water {
  background:
    radial-gradient(100% 90% at 30% 20%, rgba(255,255,255,0.13), transparent 58%),
    repeating-linear-gradient(174deg, rgba(255,255,255,0.035) 0 2px, transparent 2px 9px),
    linear-gradient(200deg, #1a1a20 0%, #101014 60%, #0a0a0c 100%);
}
/* 外気浴 */
.visual--air {
  background:
    radial-gradient(140% 100% at 50% 120%, rgba(255,255,255,0.12), transparent 55%),
    linear-gradient(180deg, #0b0b0d 0%, #17171c 55%, #24242a 100%);
}
/* ラウンジ */
.visual--lounge {
  background:
    radial-gradient(80% 60% at 15% 25%, rgba(255,255,255,0.11), transparent 60%),
    radial-gradient(70% 60% at 85% 80%, rgba(255,255,255,0.06), transparent 60%),
    linear-gradient(140deg, #1c1c21 0%, #121215 55%, #0d0d10 100%);
}
/* ロウリュ */
.visual--steam {
  background:
    radial-gradient(60% 50% at 50% 40%, rgba(255,255,255,0.2), transparent 62%),
    radial-gradient(120% 90% at 80% 100%, rgba(255,255,255,0.05), transparent 60%),
    linear-gradient(150deg, #232329 0%, #141418 55%, #0a0a0c 100%);
}
/* 汎用（濃） */
.visual--deep {
  background:
    radial-gradient(110% 80% at 70% 10%, rgba(255,255,255,0.08), transparent 58%),
    linear-gradient(165deg, #18181d 0%, #0e0e11 60%, #08080a 100%);
}

.visual__label {
  position: absolute;
  left: 20px;
  bottom: 16px;
  z-index: 2;
  font-size: 10px;
  letter-spacing: 0.24em;
  text-transform: uppercase;
  color: rgba(255, 255, 255, 0.45);
}

.ratio-4-3  { aspect-ratio: 4 / 3; }
.ratio-3-2  { aspect-ratio: 3 / 2; }
.ratio-1-1  { aspect-ratio: 1 / 1; }
.ratio-3-4  { aspect-ratio: 3 / 4; }
.ratio-16-9 { aspect-ratio: 16 / 9; }

/* =============================================================
   Hero
   ============================================================= */
.hero {
  position: relative;
  min-height: 100svh;
  display: flex;
  align-items: flex-end;
  padding-bottom: clamp(60px, 9vw, 110px);
  overflow: hidden;
}
.hero__bg {
  position: absolute;
  inset: 0;
  z-index: -2;
  overflow: hidden;
  isolation: isolate;
  background:
    radial-gradient(75% 55% at 68% 28%, rgba(255,255,255,0.15), transparent 60%),
    radial-gradient(90% 70% at 12% 95%, rgba(255,255,255,0.06), transparent 62%),
    linear-gradient(165deg, #1c1c21 0%, #101013 45%, #08080a 100%);
}
.hero__bg img {
  position: absolute;
  inset: 0;
  z-index: -1;
  width: 100%;
  height: 100%;
  object-fit: cover;
  filter: grayscale(1) contrast(1.05) brightness(0.62);
  transform: scale(1.04);
  animation: heroZoom 24s ease-out forwards;
}
@keyframes heroZoom {
  from { transform: scale(1.12); }
  to   { transform: scale(1.0); }
}
.hero__bg::before {
  content: "";
  position: absolute;
  inset: 0;
  background:
    linear-gradient(100deg, rgba(8,8,10,0.92) 0%, rgba(8,8,10,0.66) 42%, rgba(8,8,10,0.35) 100%),
    linear-gradient(180deg, rgba(8,8,10,0.55) 0%, transparent 30%, rgba(8,8,10,0.75) 100%);
}
.hero__bg::after {
  content: "";
  position: absolute;
  inset: 0;
  opacity: 0.3;
  mix-blend-mode: overlay;
  background-image: url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' width='160' height='160'%3E%3Cfilter id='n'%3E%3CfeTurbulence type='fractalNoise' baseFrequency='0.85' numOctaves='3'/%3E%3C/filter%3E%3Crect width='160' height='160' filter='url(%23n)' opacity='0.5'/%3E%3C/svg%3E");
}
/* 立ちのぼる蒸気 */
.hero__steam {
  position: absolute;
  inset: 0;
  z-index: -1;
  background: radial-gradient(42% 34% at 62% 46%, rgba(255,255,255,0.09), transparent 70%);
  filter: blur(24px);
  animation: drift 16s ease-in-out infinite alternate;
}
@keyframes drift {
  from { transform: translate3d(-3%, 4%, 0) scale(1); opacity: 0.75; }
  to   { transform: translate3d(4%, -6%, 0) scale(1.16); opacity: 1; }
}

.hero__inner { width: 100%; }

.hero__title {
  font-family: var(--font-serif);
  font-size: clamp(52px, 13vw, 168px);
  line-height: 0.94;
  letter-spacing: 0.06em;
  font-weight: 400;
  margin-bottom: 26px;
}
.hero__title em {
  display: block;
  font-style: italic;
  font-size: 0.44em;
  letter-spacing: 0.1em;
  color: var(--text-2);
  margin-top: 12px;
}

.hero__copy {
  font-size: clamp(15px, 1.8vw, 20px);
  line-height: 2.05;
  letter-spacing: 0.14em;
  color: var(--text-2);
  max-width: 34ch;
}

.hero__meta {
  display: flex;
  flex-wrap: wrap;
  gap: 12px 40px;
  margin-top: 46px;
  padding-top: 28px;
  border-top: 1px solid var(--line-soft);
  font-size: 11px;
  letter-spacing: 0.2em;
  text-transform: uppercase;
  color: var(--muted);
}

.scroll-cue {
  position: absolute;
  right: 24px;
  bottom: 0;
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 14px;
  font-size: 10px;
  letter-spacing: 0.24em;
  text-transform: uppercase;
  color: var(--muted);
  writing-mode: vertical-rl;
}
.scroll-cue::after {
  content: "";
  width: 1px;
  height: 74px;
  background: linear-gradient(to bottom, var(--line), transparent);
  animation: cue 2.4s ease-in-out infinite;
  transform-origin: top;
}
@keyframes cue {
  0%, 100% { transform: scaleY(0.35); opacity: 0.4; }
  50%      { transform: scaleY(1);    opacity: 1; }
}

/* =============================================================
   Page Head（下層ページ）
   ============================================================= */
.page-head {
  position: relative;
  padding-top: calc(var(--header-h) + clamp(70px, 11vw, 130px));
  padding-bottom: clamp(50px, 8vw, 90px);
  border-bottom: 1px solid var(--line-soft);
  overflow: hidden;
}
.page-head__bg {
  position: absolute;
  inset: 0;
  z-index: -1;
  overflow: hidden;
  isolation: isolate;
  background:
    radial-gradient(70% 90% at 82% 0%, rgba(255,255,255,0.09), transparent 62%),
    linear-gradient(180deg, #121216 0%, var(--bg) 100%);
}
.page-head__bg img {
  position: absolute;
  inset: 0;
  z-index: -1;
  width: 100%;
  height: 100%;
  object-fit: cover;
  filter: grayscale(1) contrast(1.05) brightness(0.55);
}
.page-head__bg::before {
  content: "";
  position: absolute;
  inset: 0;
  background:
    linear-gradient(90deg, rgba(8,8,10,0.9) 0%, rgba(8,8,10,0.6) 55%, rgba(8,8,10,0.4) 100%),
    linear-gradient(180deg, rgba(8,8,10,0.5) 0%, transparent 40%, var(--bg) 100%);
}
.page-head__title {
  font-family: var(--font-serif);
  font-size: clamp(38px, 8vw, 84px);
  line-height: 1;
  letter-spacing: 0.08em;
  font-weight: 400;
}
.page-head__ja {
  display: block;
  margin-top: 18px;
  font-family: var(--font-sans);
  font-size: 13px;
  letter-spacing: 0.3em;
  color: var(--muted);
}

.breadcrumb {
  display: flex;
  gap: 10px;
  font-size: 11px;
  letter-spacing: 0.16em;
  color: var(--muted);
  margin-bottom: 30px;
}
.breadcrumb a:hover { color: var(--text); }
.breadcrumb span { color: var(--line); }

/* =============================================================
   汎用グリッド / カード
   ============================================================= */
.grid { display: grid; gap: clamp(24px, 3vw, 40px); }
.grid--2 { grid-template-columns: repeat(2, 1fr); }
.grid--3 { grid-template-columns: repeat(3, 1fr); }
.grid--4 { grid-template-columns: repeat(4, 1fr); }

/* 画像 + テキストの交互レイアウト */
.split {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: clamp(32px, 5vw, 84px);
  align-items: center;
}
.split + .split { margin-top: clamp(64px, 9vw, 130px); }
.split--rev .split__media { order: 2; }
.split__body { max-width: 46ch; }
.split__title {
  font-size: clamp(21px, 2.6vw, 30px);
  font-weight: 400;
  letter-spacing: 0.1em;
  line-height: 1.6;
  margin: 16px 0 22px;
}
.split__text { color: var(--text-2); line-height: 2.15; }

.spec {
  margin-top: 30px;
  border-top: 1px solid var(--line-soft);
  font-size: 13px;
}
.spec div {
  display: flex;
  gap: 24px;
  padding: 13px 0;
  border-bottom: 1px solid var(--line-soft);
}
.spec dt { flex: 0 0 6.5em; color: var(--muted); font-size: 12px; letter-spacing: 0.12em; }
.spec dd { color: var(--text-2); }

/* カード */
.card {
  display: block;
  border: 1px solid var(--line-soft);
  background: var(--bg-2);
  transition: border-color 0.5s var(--ease), transform 0.5s var(--ease), background 0.5s var(--ease);
}
a.card:hover { border-color: var(--line); transform: translateY(-4px); background: var(--bg-3); }
.card__body { padding: 30px 28px 34px; }
.card__title {
  font-size: 17px;
  font-weight: 400;
  letter-spacing: 0.1em;
  margin: 14px 0 12px;
}
.card__text { color: var(--muted); font-size: 13.5px; line-height: 2; }

/* 特徴リスト（数字付き） */
.features { border-top: 1px solid var(--line-soft); }
.features li {
  display: grid;
  grid-template-columns: 90px 1fr;
  gap: clamp(16px, 4vw, 56px);
  padding: clamp(28px, 4vw, 44px) 0;
  border-bottom: 1px solid var(--line-soft);
  align-items: start;
}
.features h3 {
  font-size: clamp(17px, 2vw, 22px);
  font-weight: 400;
  letter-spacing: 0.1em;
  margin-bottom: 14px;
}
.features p { color: var(--text-2); max-width: 60ch; }

/* =============================================================
   料金テーブル / プラン
   ============================================================= */
.plan {
  border: 1px solid var(--line-soft);
  background: var(--bg-2);
  padding: 40px 32px 44px;
  display: flex;
  flex-direction: column;
  transition: border-color 0.5s var(--ease), background 0.5s var(--ease);
}
.plan:hover { border-color: var(--line); background: var(--bg-3); }
.plan--feature { border-color: var(--line); background: var(--bg-3); position: relative; }
.plan--feature::before {
  content: "RECOMMENDED";
  position: absolute;
  top: -1px;
  left: -1px;
  padding: 7px 14px;
  background: var(--text);
  color: var(--bg);
  font-size: 9px;
  letter-spacing: 0.2em;
}
.plan__name { font-size: 13px; letter-spacing: 0.24em; text-transform: uppercase; color: var(--muted); }
.plan__price {
  font-family: var(--font-serif);
  font-size: clamp(38px, 5vw, 54px);
  line-height: 1.2;
  margin: 18px 0 4px;
}
.plan__price small { font-family: var(--font-sans); font-size: 13px; letter-spacing: 0.12em; color: var(--muted); }
.plan__note { color: var(--muted); font-size: 12.5px; letter-spacing: 0.08em; }
.plan__list { margin-top: 28px; padding-top: 24px; border-top: 1px solid var(--line-soft); }
.plan__list li {
  position: relative;
  padding-left: 20px;
  color: var(--text-2);
  font-size: 13.5px;
  line-height: 2.05;
}
.plan__list li::before {
  content: "";
  position: absolute;
  left: 0;
  top: 0.95em;
  width: 8px;
  height: 1px;
  background: var(--muted);
}

.table-wrap { overflow-x: auto; }
table.price {
  width: 100%;
  min-width: 560px;
  border-collapse: collapse;
  font-size: 14px;
}
table.price th, table.price td {
  padding: 18px 20px;
  border-bottom: 1px solid var(--line-soft);
  text-align: left;
}
table.price thead th {
  font-size: 11px;
  letter-spacing: 0.2em;
  text-transform: uppercase;
  color: var(--muted);
  font-weight: 400;
  border-bottom-color: var(--line);
}
table.price tbody th { font-weight: 400; letter-spacing: 0.08em; }
table.price td { color: var(--text-2); }
table.price td.n { font-family: var(--font-serif); font-size: 17px; color: var(--text); }
table.price tbody tr { transition: background 0.35s var(--ease); }
table.price tbody tr:hover { background: var(--bg-2); }

.note {
  margin-top: 26px;
  color: var(--muted);
  font-size: 12.5px;
  line-height: 2;
}
.note li { position: relative; padding-left: 16px; }
.note li::before { content: "※"; position: absolute; left: 0; }

/* =============================================================
   ご利用の流れ / FAQ
   ============================================================= */
.steps { counter-reset: step; }
.steps > li {
  position: relative;
  display: grid;
  grid-template-columns: 120px 1fr;
  gap: clamp(20px, 4vw, 56px);
  padding: clamp(30px, 4vw, 48px) 0;
  border-bottom: 1px solid var(--line-soft);
}
.steps > li:first-child { border-top: 1px solid var(--line-soft); }
.steps__no {
  counter-increment: step;
  font-family: var(--font-serif);
  font-size: 13px;
  letter-spacing: 0.2em;
  color: var(--muted);
}
.steps__no::before { content: "STEP " counter(step, decimal-leading-zero); }
.steps h3 {
  font-size: clamp(18px, 2.2vw, 23px);
  font-weight: 400;
  letter-spacing: 0.1em;
  margin-bottom: 14px;
}
.steps p { color: var(--text-2); max-width: 60ch; }

.faq { border-top: 1px solid var(--line-soft); }
.faq__item { border-bottom: 1px solid var(--line-soft); }
.faq__q {
  width: 100%;
  display: flex;
  align-items: center;
  gap: 20px;
  padding: 26px 0;
  text-align: left;
  font-size: 15px;
  letter-spacing: 0.08em;
  transition: color 0.35s var(--ease);
}
.faq__q:hover { color: var(--white); }
.faq__q .q {
  font-family: var(--font-serif);
  font-size: 15px;
  color: var(--muted);
  flex: none;
  width: 22px;
}
.faq__icon {
  margin-left: auto;
  position: relative;
  width: 13px;
  height: 13px;
  flex: none;
}
.faq__icon::before, .faq__icon::after {
  content: "";
  position: absolute;
  background: currentColor;
  transition: transform 0.45s var(--ease), opacity 0.3s var(--ease);
}
.faq__icon::before { top: 6px; left: 0; width: 13px; height: 1px; }
.faq__icon::after  { left: 6px; top: 0; width: 1px; height: 13px; }
.faq__item.is-open .faq__icon::after { transform: scaleY(0); opacity: 0; }

.faq__a {
  display: grid;
  grid-template-rows: 0fr;
  transition: grid-template-rows 0.5s var(--ease);
}
.faq__item.is-open .faq__a { grid-template-rows: 1fr; }
.faq__a > div { overflow: hidden; }
.faq__a p {
  padding: 0 42px 28px;
  color: var(--text-2);
  font-size: 14px;
  line-height: 2.1;
  max-width: 68ch;
}

/* =============================================================
   アクセス / 情報テーブル
   ============================================================= */
.info { border-top: 1px solid var(--line-soft); }
.info > div {
  display: grid;
  grid-template-columns: 180px 1fr;
  gap: 24px;
  padding: 22px 0;
  border-bottom: 1px solid var(--line-soft);
}
.info dt { color: var(--muted); font-size: 12px; letter-spacing: 0.18em; text-transform: uppercase; }
.info dd { color: var(--text-2); }

.map {
  position: relative;
  aspect-ratio: 16 / 7;
  border: 1px solid var(--line-soft);
  background:
    linear-gradient(rgba(255,255,255,0.045) 1px, transparent 1px) 0 0 / 100% 56px,
    linear-gradient(90deg, rgba(255,255,255,0.045) 1px, transparent 1px) 0 0 / 56px 100%,
    linear-gradient(rgba(255,255,255,0.022) 1px, transparent 1px) 0 0 / 100% 14px,
    linear-gradient(90deg, rgba(255,255,255,0.022) 1px, transparent 1px) 0 0 / 14px 100%,
    #0e0e11;
  display: grid;
  place-items: center;
}
.map__pin {
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 12px;
  font-size: 10px;
  letter-spacing: 0.24em;
  text-transform: uppercase;
  color: var(--muted);
}
.map__pin::before {
  content: "";
  width: 12px;
  height: 12px;
  border: 1px solid var(--text);
  border-radius: 50%;
  box-shadow: 0 0 0 8px rgba(255, 255, 255, 0.05), 0 0 0 18px rgba(255, 255, 255, 0.025);
}

.contact-grid { display: grid; grid-template-columns: repeat(3, 1fr); gap: 1px; background: var(--line-soft); border: 1px solid var(--line-soft); }
.contact-grid > div { background: var(--bg-2); padding: 36px 30px; }
.contact-grid dt { font-size: 10px; letter-spacing: 0.24em; text-transform: uppercase; color: var(--muted); margin-bottom: 14px; }
.contact-grid dd { font-family: var(--font-serif); font-size: clamp(18px, 2.2vw, 24px); letter-spacing: 0.04em; }
.contact-grid dd small { display: block; font-family: var(--font-sans); font-size: 12px; letter-spacing: 0.1em; color: var(--muted); margin-top: 8px; }

/* デモ注記 */
.disclaimer {
  margin-top: 34px;
  padding: 20px 24px;
  border: 1px dashed var(--line);
  color: var(--muted);
  font-size: 12.5px;
  letter-spacing: 0.06em;
  line-height: 2;
}

/* =============================================================
   フォーム
   ============================================================= */
.form { max-width: 880px; }
.form__row {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 24px;
  margin-bottom: 24px;
}
.field { display: block; margin-bottom: 24px; }
.form__row .field { margin-bottom: 0; }

.field__label {
  display: flex;
  align-items: center;
  gap: 10px;
  font-size: 11px;
  letter-spacing: 0.18em;
  color: var(--muted);
  margin-bottom: 12px;
}
.field__label i {
  font-style: normal;
  font-size: 9px;
  letter-spacing: 0.14em;
  padding: 3px 7px;
  border: 1px solid var(--line);
  color: var(--text-2);
}

.field input,
.field select,
.field textarea {
  width: 100%;
  padding: 15px 18px;
  background: var(--bg);
  border: 1px solid var(--line);
  border-radius: var(--radius);
  color: var(--text);
  font-family: inherit;
  font-size: 14px;
  letter-spacing: 0.06em;
  line-height: 1.8;
  transition: border-color 0.4s var(--ease), background 0.4s var(--ease);
}
.field textarea { resize: vertical; min-height: 150px; }
.field select { appearance: none; cursor: pointer; }
.field input::placeholder,
.field textarea::placeholder { color: #55555d; }
.field input:focus,
.field select:focus,
.field textarea:focus {
  outline: none;
  border-color: var(--text-2);
  background: var(--bg-3);
}

.form__foot {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  justify-content: space-between;
  gap: 24px;
  margin-top: 36px;
  padding-top: 30px;
  border-top: 1px solid var(--line-soft);
}
.form__note { color: var(--muted); font-size: 12px; line-height: 2; }
.form__note strong { color: var(--text-2); font-weight: 400; }

.form__result {
  margin-top: 28px;
  padding: 20px 24px;
  border: 1px solid var(--line);
  background: var(--bg-3);
  color: var(--text-2);
  font-size: 13px;
  letter-spacing: 0.06em;
}

@media (max-width: 700px) {
  .form__row { grid-template-columns: 1fr; margin-bottom: 24px; }
  .form__row .field + .field { margin-top: 24px; }
  .form__foot { flex-direction: column; align-items: stretch; }
}

/* =============================================================
   CTA / Footer
   ============================================================= */
.cta {
  position: relative;
  padding-block: clamp(90px, 13vw, 160px);
  text-align: center;
  overflow: hidden;
  border-top: 1px solid var(--line-soft);
}
.cta__bg {
  position: absolute;
  inset: 0;
  z-index: -1;
  overflow: hidden;
  isolation: isolate;
  background:
    radial-gradient(60% 70% at 50% 20%, rgba(255,255,255,0.09), transparent 62%),
    linear-gradient(180deg, #101014 0%, var(--bg) 100%);
}
.cta__bg img {
  position: absolute;
  inset: 0;
  z-index: -1;
  width: 100%;
  height: 100%;
  object-fit: cover;
  filter: grayscale(1) contrast(1.05) brightness(0.5);
}
.cta__bg::before {
  content: "";
  position: absolute;
  inset: 0;
  background: radial-gradient(70% 90% at 50% 50%, rgba(8,8,10,0.6) 0%, rgba(8,8,10,0.88) 70%, var(--bg) 100%);
}
.cta__title {
  font-family: var(--font-serif);
  font-size: clamp(30px, 6vw, 62px);
  line-height: 1.25;
  letter-spacing: 0.06em;
  margin-bottom: 24px;
}
.cta .lead { margin-inline: auto; text-align: center; }
.cta .btn-row { justify-content: center; }

.footer {
  border-top: 1px solid var(--line-soft);
  background: var(--bg-2);
  padding-block: clamp(56px, 7vw, 84px) 34px;
}
.footer__top {
  display: grid;
  grid-template-columns: 1.4fr 1fr 1fr;
  gap: clamp(32px, 5vw, 64px);
  padding-bottom: 48px;
  border-bottom: 1px solid var(--line-soft);
}
.footer__brand .logo { margin-bottom: 22px; }
.footer__brand p { color: var(--muted); font-size: 12.5px; line-height: 2.1; max-width: 34ch; }
.footer h4 {
  font-size: 10px;
  letter-spacing: 0.24em;
  text-transform: uppercase;
  color: var(--muted);
  font-weight: 400;
  margin-bottom: 20px;
}
.footer__list li { margin-bottom: 12px; }
.footer__list a {
  font-size: 13px;
  letter-spacing: 0.08em;
  color: var(--text-2);
  transition: color 0.35s var(--ease);
}
.footer__list a:hover { color: var(--white); }
.footer__bottom {
  display: flex;
  flex-wrap: wrap;
  gap: 12px 28px;
  justify-content: space-between;
  padding-top: 28px;
  font-size: 11px;
  letter-spacing: 0.14em;
  color: var(--muted);
}

/* =============================================================
   スクロール表示アニメーション
   ============================================================= */
.reveal {
  opacity: 0;
  transform: translateY(26px);
  transition: opacity 0.9s var(--ease), transform 0.9s var(--ease);
}
.reveal.is-visible { opacity: 1; transform: none; }
.reveal[data-delay="1"] { transition-delay: 0.1s; }
.reveal[data-delay="2"] { transition-delay: 0.2s; }
.reveal[data-delay="3"] { transition-delay: 0.3s; }

@media (prefers-reduced-motion: reduce) {
  *, *::before, *::after {
    animation-duration: 0.01ms !important;
    animation-iteration-count: 1 !important;
    transition-duration: 0.01ms !important;
    scroll-behavior: auto !important;
  }
  .reveal { opacity: 1; transform: none; }
}

/* =============================================================
   Responsive
   ============================================================= */
@media (max-width: 1000px) {
  .grid--4 { grid-template-columns: repeat(2, 1fr); }
  .footer__top { grid-template-columns: 1fr 1fr; }
  .footer__brand { grid-column: 1 / -1; }
  .contact-grid { grid-template-columns: 1fr; }
}

@media (max-width: 860px) {
  :root { --header-h: 66px; }

  .nav { display: none; }
  .burger { display: block; }

  .grid--2, .grid--3 { grid-template-columns: 1fr; }

  .split { grid-template-columns: 1fr; gap: 28px; }
  .split--rev .split__media { order: 0; }

  .features li { grid-template-columns: 1fr; gap: 12px; }
  .steps > li { grid-template-columns: 1fr; gap: 12px; }
  .info > div { grid-template-columns: 1fr; gap: 6px; padding: 18px 0; }

  .hero { align-items: center; padding-top: var(--header-h); }
  .scroll-cue { display: none; }

  .faq__a p { padding-left: 0; padding-right: 0; }
}

@media (max-width: 560px) {
  body { font-size: 14px; }
  .container { padding-inline: 20px; }
  .grid--4 { grid-template-columns: 1fr; }
  .footer__top { grid-template-columns: 1fr; }
  .btn { width: 100%; justify-content: space-between; }
}