/* ============================================
   THE VINTAGE HOUSE — 釜利谷東 LP
   和モダン・静謐・編集的
   ============================================ */

:root {
  /* 生成り・木肌・墨・障子・庭 */
  --paper: #f5f1ea;          /* 生成り紙 */
  --shoji: #faf8f3;          /* 障子の白 */
  --hada: #e8ddc9;           /* 木肌ベージュ淡 */
  --hada-mid: #c9b79c;       /* 木肌ベージュ */
  --hada-deep: #8a7458;      /* 焦げ茶 */
  --sumi: #2a2724;           /* 墨 */
  --sumi-soft: #4a4640;      /* 墨やわらか */
  --sumi-mute: #7d786f;      /* 墨薄 */
  --niwa: #5c6b4f;           /* 庭の緑 */
  --niwa-deep: #3f4a37;      /* 苔深 */
  --line: rgba(42, 39, 36, 0.12);
  --line-strong: rgba(42, 39, 36, 0.25);

  --serif-jp: "Shippori Mincho", "Noto Serif JP", "Yu Mincho", "游明朝", serif;
  --serif-jp-body: "Noto Serif JP", "Yu Mincho", "游明朝", serif;
  --serif-en: "Cormorant Garamond", "Shippori Mincho", serif;
  --sans-jp: "Noto Sans JP", "Hiragino Kaku Gothic ProN", sans-serif;
  --mono: "JetBrains Mono", ui-monospace, "SFMono-Regular", monospace;
}

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

html { scroll-behavior: smooth; }

body {
  font-family: var(--serif-jp-body);
  font-weight: 400;
  color: var(--sumi);
  background: var(--paper);
  line-height: 1.9;
  font-feature-settings: "palt";
  -webkit-font-smoothing: antialiased;
  overflow-x: hidden;
}

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

/* ============================================
   NAV — 固定上部
   ============================================ */
.nav {
  position: fixed;
  top: 0; left: 0; right: 0;
  z-index: 100;
  display: flex;
  justify-content: space-between;
  align-items: center;
  padding: 22px 40px;
  transition: background 0.4s ease, backdrop-filter 0.4s ease, padding 0.4s ease;
  color: var(--shoji);
}
.nav.scrolled {
  background: rgba(245, 241, 234, 0.92);
  backdrop-filter: blur(12px);
  color: var(--sumi);
  padding: 14px 40px;
  border-bottom: 1px solid var(--line);
}
.nav-brand {
  font-family: var(--serif-en);
  font-size: 17px;
  letter-spacing: 0.28em;
  font-weight: 500;
}
.nav-brand small {
  display: block;
  font-family: var(--serif-jp);
  font-size: 10px;
  letter-spacing: 0.5em;
  margin-top: 2px;
  opacity: 0.75;
}
.nav-cta {
  font-family: var(--serif-jp);
  font-size: 13px;
  letter-spacing: 0.3em;
  padding: 10px 22px;
  border: 1px solid currentColor;
  text-decoration: none;
  color: inherit;
  transition: background 0.3s, color 0.3s;
}
.nav-cta:hover { background: currentColor; }
.nav-cta:hover span { color: var(--paper); }
.nav.scrolled .nav-cta:hover span { color: var(--shoji); }

/* ============================================
   HERO
   ============================================ */
.hero {
  position: relative;
  height: 100vh;
  min-height: 720px;
  overflow: hidden;
  color: var(--shoji);
}
.hero-media {
  position: absolute;
  inset: 0;
  background: url("assets/photos/02_shoji_day.jpg") center/cover no-repeat;
  transform: scale(1.05);
  animation: kenburns 20s ease-out forwards;
}
.hero-media::after {
  content: "";
  position: absolute;
  inset: 0;
  background: linear-gradient(180deg,
    rgba(20, 18, 16, 0.35) 0%,
    rgba(20, 18, 16, 0.15) 40%,
    rgba(20, 18, 16, 0.55) 100%);
}
@keyframes kenburns {
  from { transform: scale(1.12); }
  to { transform: scale(1.02); }
}

.hero-inner {
  position: relative;
  z-index: 2;
  height: 100%;
  display: grid;
  grid-template-columns: 1fr auto 1fr;
  align-items: end;
  padding: 0 60px 80px;
}

.hero-tagline {
  writing-mode: vertical-rl;
  font-family: var(--serif-jp);
  font-size: 28px;
  letter-spacing: 0.5em;
  line-height: 2;
  align-self: end;
  grid-column: 2;
  margin-bottom: 20px;
  text-shadow: 0 2px 30px rgba(0,0,0,0.4);
  opacity: 0;
  animation: fadeUp 1.6s 0.6s ease-out forwards;
}
.hero-tagline .accent {
  color: var(--hada-mid);
  font-size: 22px;
}

.hero-corner {
  position: absolute;
  z-index: 2;
  font-family: var(--serif-en);
  font-size: 11px;
  letter-spacing: 0.35em;
  opacity: 0.85;
}
.hero-corner.tl { top: 100px; left: 40px; }
.hero-corner.tr {
  top: 100px; right: 40px;
  text-align: right;
  font-family: var(--serif-jp);
  font-size: 12px;
  letter-spacing: 0.4em;
}
.hero-corner.br {
  bottom: 40px; right: 40px;
  text-align: right;
}
.hero-corner.br .val {
  display: block;
  font-family: var(--serif-en);
  font-size: 28px;
  letter-spacing: 0.05em;
  margin-top: 6px;
  font-weight: 300;
}
.hero-corner.bl { bottom: 40px; left: 40px; }
.hero-corner.bl .num {
  font-family: var(--serif-jp);
  writing-mode: vertical-rl;
  font-size: 13px;
  letter-spacing: 0.4em;
  padding-left: 8px;
}

.hero-scroll {
  position: absolute;
  bottom: 40px;
  left: 50%;
  transform: translateX(-50%);
  z-index: 2;
  font-family: var(--serif-en);
  font-size: 10px;
  letter-spacing: 0.45em;
  opacity: 0.7;
  animation: bob 2.4s ease-in-out infinite;
  text-align: center;
}
.hero-scroll::before {
  content: "";
  display: block;
  width: 1px;
  height: 40px;
  background: currentColor;
  margin: 0 auto 12px;
  opacity: 0.6;
}
@keyframes bob {
  0%, 100% { transform: translate(-50%, 0); }
  50% { transform: translate(-50%, 6px); }
}

@keyframes fadeUp {
  from { opacity: 0; transform: translateY(24px); }
  to { opacity: 1; transform: translateY(0); }
}

/* ============================================
   COMMON — 章タイトル・共通コンポーネント
   ============================================ */
.container {
  max-width: 1240px;
  margin: 0 auto;
  padding: 0 40px;
}
.container-narrow {
  max-width: 880px;
  margin: 0 auto;
  padding: 0 40px;
}

section {
  padding: 140px 0;
  position: relative;
}

.chapter-marker {
  display: flex;
  align-items: baseline;
  gap: 20px;
  margin-bottom: 60px;
  font-family: var(--serif-en);
  font-size: 12px;
  letter-spacing: 0.4em;
  color: var(--sumi-mute);
  text-transform: uppercase;
}
.chapter-marker .num {
  font-size: 36px;
  font-weight: 300;
  color: var(--sumi);
  letter-spacing: 0.05em;
}
.chapter-marker .line {
  flex: 1;
  height: 1px;
  background: var(--line-strong);
}

.section-title {
  font-family: var(--serif-jp);
  font-weight: 400;
  font-size: 40px;
  line-height: 1.7;
  letter-spacing: 0.15em;
  margin-bottom: 30px;
}
.section-title .em {
  border-bottom: 1px solid var(--hada-mid);
  padding-bottom: 4px;
}
.section-lead {
  font-family: var(--serif-jp-body);
  font-size: 16px;
  line-height: 2.2;
  letter-spacing: 0.08em;
  color: var(--sumi-soft);
  max-width: 680px;
  text-wrap: pretty;
}

.eng-label {
  font-family: var(--serif-en);
  font-style: italic;
  font-size: 14px;
  letter-spacing: 0.2em;
  color: var(--sumi-mute);
  display: block;
  margin-bottom: 8px;
}

/* ============================================
   序章 — Prologue
   ============================================ */
.prologue {
  background: var(--paper);
  padding: 160px 0;
  text-align: center;
}
.prologue-eng {
  font-family: var(--serif-en);
  font-style: italic;
  font-size: 15px;
  letter-spacing: 0.35em;
  color: var(--sumi-mute);
  margin-bottom: 40px;
}
.prologue-title {
  font-family: var(--serif-jp);
  font-size: 34px;
  line-height: 2.4;
  letter-spacing: 0.2em;
  color: var(--sumi);
  margin-bottom: 50px;
  font-weight: 400;
}
.prologue-body {
  max-width: 620px;
  margin: 0 auto;
  font-size: 15px;
  line-height: 2.4;
  letter-spacing: 0.1em;
  color: var(--sumi-soft);
}
.prologue-body p + p { margin-top: 1.4em; }
.prologue-mark {
  width: 32px;
  height: 1px;
  background: var(--hada-deep);
  margin: 60px auto 0;
}

/* ============================================
   章1 — 違い（DIFFERENCE）
   ============================================ */
.difference {
  background: var(--shoji);
  border-top: 1px solid var(--line);
  border-bottom: 1px solid var(--line);
}
.difference-grid {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 80px;
  align-items: center;
  margin-top: 80px;
}
.difference-image {
  aspect-ratio: 4/5;
  background: url("assets/photos/01_garden_opening.jpg") center/cover no-repeat;
  position: relative;
}
.difference-image::after {
  content: "";
  position: absolute;
  inset: 0;
  border: 1px solid rgba(255,255,255,0.15);
  margin: 20px;
  pointer-events: none;
}
.difference-list {
  display: flex;
  flex-direction: column;
  gap: 44px;
}
.diff-item {
  padding-bottom: 40px;
  border-bottom: 1px solid var(--line);
}
.diff-item:last-child { border-bottom: none; }
.diff-item-num {
  font-family: var(--serif-en);
  font-size: 12px;
  letter-spacing: 0.3em;
  color: var(--hada-deep);
  margin-bottom: 12px;
}
.diff-item-title {
  font-family: var(--serif-jp);
  font-size: 22px;
  letter-spacing: 0.15em;
  margin-bottom: 14px;
  font-weight: 400;
}
.diff-item-body {
  font-size: 14.5px;
  line-height: 2.1;
  color: var(--sumi-soft);
  letter-spacing: 0.05em;
}

/* ============================================
   章2 — GALLERY 昼と夜
   ============================================ */
.gallery {
  background: var(--paper);
  padding: 140px 0 160px;
}
.gallery-header {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 60px;
  align-items: end;
  margin-bottom: 80px;
}

.day-night-toggle {
  display: flex;
  gap: 0;
  border: 1px solid var(--sumi);
  align-self: end;
  justify-self: end;
}
.day-night-toggle button {
  font-family: var(--serif-jp);
  font-size: 13px;
  letter-spacing: 0.3em;
  padding: 12px 28px;
  border: none;
  background: transparent;
  color: var(--sumi);
  cursor: pointer;
  transition: all 0.3s;
}
.day-night-toggle button.active {
  background: var(--sumi);
  color: var(--shoji);
}
.day-night-toggle button .en {
  display: block;
  font-family: var(--serif-en);
  font-size: 9px;
  letter-spacing: 0.3em;
  margin-top: 2px;
  opacity: 0.65;
}

.gallery-grid {
  display: grid;
  grid-template-columns: repeat(12, 1fr);
  gap: 20px;
  transition: opacity 0.5s ease;
}
.gallery-item {
  position: relative;
  overflow: hidden;
}
.gallery-item img {
  width: 100%;
  height: 100%;
  object-fit: cover;
  transition: transform 1.2s ease;
}
.gallery-item:hover img { transform: scale(1.03); }
.gallery-item .caption {
  position: absolute;
  bottom: 20px;
  left: 20px;
  color: var(--shoji);
  font-family: var(--serif-jp);
  font-size: 12px;
  letter-spacing: 0.3em;
  writing-mode: vertical-rl;
  text-shadow: 0 1px 8px rgba(0,0,0,0.5);
}
.gallery-item .caption .en {
  writing-mode: horizontal-tb;
  font-family: var(--serif-en);
  font-style: italic;
  font-size: 10px;
  letter-spacing: 0.25em;
  opacity: 0.75;
  margin-top: 8px;
  writing-mode: vertical-rl;
}

/* 昼のレイアウト（意図的な非対称） */
.gallery-day .g-1 { grid-column: 1 / 8; aspect-ratio: 16/10; }
.gallery-day .g-2 { grid-column: 8 / 13; aspect-ratio: 4/5; }
.gallery-day .g-3 { grid-column: 1 / 5; aspect-ratio: 4/5; margin-top: -160px; }
.gallery-day .g-4 { grid-column: 5 / 10; aspect-ratio: 16/10; }
.gallery-day .g-5 { grid-column: 10 / 13; aspect-ratio: 3/4; }
.gallery-day .g-6 { grid-column: 3 / 11; aspect-ratio: 16/9; }

/* 夜のレイアウト */
.gallery-night { display: none; }
.gallery-night.active { display: grid; }
.gallery-day.hidden { display: none; }

.gallery-night .g-1 { grid-column: 1 / 9; aspect-ratio: 16/10; }
.gallery-night .g-2 { grid-column: 9 / 13; aspect-ratio: 3/4; }
.gallery-night .g-3 { grid-column: 2 / 8; aspect-ratio: 16/10; }
.gallery-night .g-4 { grid-column: 8 / 13; aspect-ratio: 4/5; margin-top: 40px; }

/* ============================================
   章3 — 設計の合理性
   ============================================ */
.design {
  background: var(--shoji);
  border-top: 1px solid var(--line);
  border-bottom: 1px solid var(--line);
}
.design-intro {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 100px;
  align-items: start;
  margin-bottom: 100px;
}
.design-blocks {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 60px;
}
.design-block {
  border-top: 1px solid var(--sumi);
  padding-top: 28px;
}
.design-block-num {
  font-family: var(--serif-en);
  font-size: 11px;
  letter-spacing: 0.4em;
  color: var(--sumi-mute);
  margin-bottom: 20px;
}
.design-block-title {
  font-family: var(--serif-jp);
  font-size: 20px;
  letter-spacing: 0.15em;
  margin-bottom: 18px;
  line-height: 1.7;
  font-weight: 400;
}
.design-block-body {
  font-size: 14px;
  line-height: 2.1;
  color: var(--sumi-soft);
  letter-spacing: 0.05em;
}

.materials-strip {
  margin-top: 120px;
  padding-top: 60px;
  border-top: 1px solid var(--line);
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 40px;
}
.material {
  text-align: center;
}
.material-en {
  font-family: var(--serif-en);
  font-style: italic;
  font-size: 12px;
  letter-spacing: 0.3em;
  color: var(--hada-deep);
  margin-bottom: 8px;
}
.material-jp {
  font-family: var(--serif-jp);
  font-size: 17px;
  letter-spacing: 0.2em;
  margin-bottom: 6px;
}
.material-note {
  font-size: 11.5px;
  letter-spacing: 0.15em;
  color: var(--sumi-mute);
  font-family: var(--sans-jp);
}

/* ============================================
   章4 — 性能と安心
   ============================================ */
.performance {
  background: var(--sumi);
  color: var(--shoji);
  padding: 160px 0;
  position: relative;
  overflow: hidden;
}
.performance::before {
  content: "";
  position: absolute;
  right: -100px; top: 50%;
  transform: translateY(-50%);
  width: 380px; height: 380px;
  border-radius: 50%;
  background: rgba(201, 183, 156, 0.08);
  pointer-events: none;
}
.performance .chapter-marker { color: rgba(250, 248, 243, 0.5); }
.performance .chapter-marker .num { color: var(--shoji); }
.performance .chapter-marker .line { background: rgba(250, 248, 243, 0.2); }
.performance .section-title { color: var(--shoji); }
.performance .section-lead { color: rgba(250, 248, 243, 0.7); }

.perf-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 40px;
  margin-top: 80px;
  position: relative;
  z-index: 2;
}
.perf-card {
  border: 1px solid rgba(250, 248, 243, 0.18);
  padding: 44px 36px;
  background: rgba(250, 248, 243, 0.02);
  transition: background 0.4s, border-color 0.4s;
}
.perf-card:hover {
  background: rgba(250, 248, 243, 0.05);
  border-color: rgba(201, 183, 156, 0.4);
}
.perf-card-en {
  font-family: var(--serif-en);
  font-style: italic;
  font-size: 12px;
  letter-spacing: 0.3em;
  color: var(--hada-mid);
  margin-bottom: 14px;
}
.perf-card-label {
  font-family: var(--serif-jp);
  font-size: 15px;
  letter-spacing: 0.2em;
  opacity: 0.7;
  margin-bottom: 20px;
  font-weight: 400;
}
.perf-card-value {
  font-family: var(--serif-jp);
  font-size: 34px;
  letter-spacing: 0.1em;
  margin-bottom: 8px;
  font-weight: 400;
  color: var(--shoji);
}
.perf-card-value .max {
  font-family: var(--serif-en);
  font-size: 12px;
  letter-spacing: 0.2em;
  margin-left: 8px;
  color: var(--hada-mid);
  vertical-align: middle;
  font-style: italic;
}
.perf-card-body {
  font-size: 13.5px;
  line-height: 2;
  color: rgba(250, 248, 243, 0.65);
  letter-spacing: 0.05em;
  margin-top: 24px;
  padding-top: 20px;
  border-top: 1px solid rgba(250, 248, 243, 0.12);
}

.perf-footnote {
  margin-top: 60px;
  padding-top: 40px;
  border-top: 1px solid rgba(250, 248, 243, 0.12);
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  gap: 40px;
  font-size: 13px;
  color: rgba(250, 248, 243, 0.6);
  letter-spacing: 0.08em;
  line-height: 2;
}
.perf-footnote .fn-label {
  font-family: var(--serif-en);
  font-style: italic;
  font-size: 11px;
  letter-spacing: 0.3em;
  color: var(--hada-mid);
  display: block;
  margin-bottom: 6px;
}

/* ============================================
   章5 — 立地
   ============================================ */
.location {
  background: var(--paper);
  padding: 160px 0;
}
.location-hero {
  position: relative;
  aspect-ratio: 21/9;
  background: url("assets/photos/07_exterior.jpg") center/cover no-repeat;
  margin-bottom: 80px;
}
.location-hero::after {
  content: "";
  position: absolute;
  inset: 0;
  background: linear-gradient(180deg, transparent 30%, rgba(20,18,16,0.5));
}
.location-hero .location-quote {
  position: absolute;
  bottom: 40px;
  left: 40px;
  color: var(--shoji);
  font-family: var(--serif-jp);
  font-size: 24px;
  letter-spacing: 0.2em;
  line-height: 1.9;
  text-shadow: 0 2px 20px rgba(0,0,0,0.5);
  z-index: 2;
}
.location-hero .location-quote small {
  display: block;
  font-family: var(--serif-en);
  font-style: italic;
  font-size: 12px;
  letter-spacing: 0.35em;
  margin-top: 12px;
  opacity: 0.8;
}

.location-info {
  display: grid;
  grid-template-columns: 1fr 2fr;
  gap: 80px;
  align-items: start;
}
.access-line {
  display: flex;
  align-items: baseline;
  gap: 20px;
  padding: 24px 0;
  border-bottom: 1px solid var(--line);
}
.access-line:first-child { border-top: 1px solid var(--line); }
.access-line .station {
  font-family: var(--serif-jp);
  font-size: 16px;
  letter-spacing: 0.15em;
  flex: 1;
}
.access-line .line-label {
  font-family: var(--serif-en);
  font-size: 11px;
  letter-spacing: 0.3em;
  color: var(--sumi-mute);
  min-width: 90px;
}
.access-line .time {
  font-family: var(--serif-en);
  font-size: 22px;
  letter-spacing: 0.05em;
  font-weight: 300;
}
.access-line .time small {
  font-family: var(--serif-jp);
  font-size: 12px;
  letter-spacing: 0.2em;
  margin-left: 4px;
  color: var(--sumi-mute);
}
.access-highlight {
  margin-top: 30px;
  padding: 24px 28px;
  background: var(--hada);
  border-left: 3px solid var(--hada-deep);
}
.access-highlight-title {
  font-family: var(--serif-jp);
  font-size: 15px;
  letter-spacing: 0.2em;
  margin-bottom: 8px;
}
.access-highlight-body {
  font-size: 13px;
  line-height: 1.9;
  letter-spacing: 0.05em;
  color: var(--sumi-soft);
}

/* ============================================
   章6 — 懸念解消（あえての設計）
   ============================================ */
.deliberate {
  background: var(--shoji);
  border-top: 1px solid var(--line);
  padding: 160px 0;
}
.deliberate-list {
  margin-top: 80px;
  display: flex;
  flex-direction: column;
  gap: 0;
}
.del-item {
  display: grid;
  grid-template-columns: 80px 1fr 1.4fr;
  gap: 60px;
  padding: 60px 0;
  border-top: 1px solid var(--line-strong);
  align-items: start;
}
.del-item:last-child { border-bottom: 1px solid var(--line-strong); }
.del-num {
  font-family: var(--serif-en);
  font-size: 38px;
  font-weight: 300;
  color: var(--hada-deep);
  letter-spacing: 0.05em;
  line-height: 1;
}
.del-num small {
  display: block;
  font-family: var(--serif-en);
  font-size: 10px;
  letter-spacing: 0.35em;
  color: var(--sumi-mute);
  margin-top: 8px;
  font-style: italic;
}
.del-concern-label {
  font-family: var(--serif-en);
  font-style: italic;
  font-size: 11px;
  letter-spacing: 0.3em;
  color: var(--sumi-mute);
  margin-bottom: 10px;
}
.del-concern {
  font-family: var(--serif-jp);
  font-size: 21px;
  letter-spacing: 0.15em;
  line-height: 1.8;
  font-weight: 400;
  color: var(--sumi);
}
.del-answer-label {
  font-family: var(--serif-en);
  font-style: italic;
  font-size: 11px;
  letter-spacing: 0.3em;
  color: var(--niwa);
  margin-bottom: 10px;
}
.del-answer {
  font-size: 14.5px;
  line-height: 2.15;
  letter-spacing: 0.05em;
  color: var(--sumi-soft);
  text-wrap: pretty;
}

/* ============================================
   物件概要 + CTA
   ============================================ */
.overview {
  background: var(--paper);
  padding: 160px 0 100px;
}
.overview-grid {
  margin-top: 80px;
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  gap: 0 80px;
  border-top: 1px solid var(--sumi);
}
.ov-row {
  display: grid;
  grid-template-columns: 140px 1fr;
  gap: 30px;
  padding: 22px 0;
  border-bottom: 1px solid var(--line);
  font-size: 14px;
  letter-spacing: 0.08em;
  align-items: baseline;
}
.ov-key {
  font-family: var(--serif-jp);
  color: var(--sumi-mute);
  font-size: 13px;
  letter-spacing: 0.25em;
}
.ov-val {
  font-family: var(--serif-jp);
  color: var(--sumi);
  line-height: 1.8;
}
.ov-val .mono {
  font-family: var(--serif-en);
  font-size: 15px;
  letter-spacing: 0.05em;
  margin-right: 4px;
}

/* CTA */
.cta {
  background: var(--sumi);
  color: var(--shoji);
  padding: 140px 0 100px;
  text-align: center;
  position: relative;
  overflow: hidden;
}
.cta::before {
  content: "";
  position: absolute;
  inset: 40px;
  border: 1px solid rgba(201, 183, 156, 0.2);
  pointer-events: none;
}
.cta-eng {
  font-family: var(--serif-en);
  font-style: italic;
  font-size: 14px;
  letter-spacing: 0.35em;
  color: var(--hada-mid);
  margin-bottom: 30px;
}
.cta-title {
  font-family: var(--serif-jp);
  font-size: 32px;
  letter-spacing: 0.25em;
  line-height: 2;
  margin-bottom: 20px;
  font-weight: 400;
}
.cta-price {
  font-family: var(--serif-en);
  font-size: 48px;
  letter-spacing: 0.02em;
  font-weight: 300;
  margin: 40px 0 10px;
}
.cta-price .unit {
  font-family: var(--serif-jp);
  font-size: 18px;
  letter-spacing: 0.2em;
  margin-left: 6px;
  color: var(--hada-mid);
}
.cta-price-note {
  font-size: 12px;
  letter-spacing: 0.3em;
  color: var(--sumi-mute);
  margin-bottom: 60px;
  font-family: var(--serif-jp);
  color: rgba(250, 248, 243, 0.5);
}

.cta-buttons {
  display: flex;
  gap: 20px;
  justify-content: center;
  flex-wrap: wrap;
  margin-bottom: 60px;
}
.cta-btn {
  display: inline-flex;
  align-items: center;
  gap: 14px;
  padding: 20px 44px;
  font-family: var(--serif-jp);
  font-size: 14px;
  letter-spacing: 0.35em;
  text-decoration: none;
  color: var(--shoji);
  border: 1px solid var(--hada-mid);
  transition: background 0.3s, color 0.3s;
  min-width: 280px;
  justify-content: center;
}
.cta-btn.primary {
  background: var(--hada-mid);
  color: var(--sumi);
}
.cta-btn.primary:hover {
  background: var(--shoji);
  border-color: var(--shoji);
}
.cta-btn.secondary:hover {
  background: rgba(250, 248, 243, 0.08);
}
.cta-btn .arrow {
  font-family: var(--serif-en);
  font-size: 16px;
}

.cta-contact {
  border-top: 1px solid rgba(250, 248, 243, 0.15);
  padding-top: 50px;
  font-size: 13px;
  letter-spacing: 0.15em;
  color: rgba(250, 248, 243, 0.65);
  line-height: 2.2;
  font-family: var(--serif-jp);
}
.cta-contact .company {
  font-family: var(--serif-jp);
  font-size: 16px;
  letter-spacing: 0.25em;
  color: var(--shoji);
  margin-bottom: 4px;
  display: block;
}
.cta-contact .tel {
  font-family: var(--serif-en);
  font-size: 22px;
  letter-spacing: 0.1em;
  color: var(--hada-mid);
  margin-top: 12px;
  display: inline-block;
  text-decoration: none;
  transition: color 0.3s, border-color 0.3s;
  border-bottom: 1px solid transparent;
}
a.cta-contact .tel:hover,
.cta-contact a.tel:hover {
  color: var(--shoji);
  border-bottom-color: var(--shoji);
}
.cta-contact .tel-hours {
  display: block;
  font-family: var(--serif-jp);
  font-size: 12px;
  letter-spacing: 0.3em;
  color: rgba(250, 248, 243, 0.5);
  margin-top: 6px;
}

/* ============================================
   FOOTER
   ============================================ */
.footer {
  background: #1a1815;
  color: rgba(250, 248, 243, 0.5);
  padding: 40px 0;
  font-size: 11px;
  letter-spacing: 0.2em;
  text-align: center;
  font-family: var(--serif-en);
}
.footer .brand-mark {
  font-family: var(--serif-en);
  font-size: 15px;
  letter-spacing: 0.35em;
  color: var(--hada-mid);
  margin-bottom: 12px;
}

/* ============================================
   SCROLL REVEAL
   ============================================ */
.reveal {
  opacity: 0;
  transform: translateY(30px);
  transition: opacity 1.2s ease, transform 1.2s ease;
}
.reveal.in {
  opacity: 1;
  transform: translateY(0);
}
.reveal-delay-1 { transition-delay: 0.15s; }
.reveal-delay-2 { transition-delay: 0.3s; }
.reveal-delay-3 { transition-delay: 0.45s; }

/* ============================================
   RESPONSIVE
   ============================================ */
@media (max-width: 900px) {
  .nav { padding: 16px 22px; }
  .nav.scrolled { padding: 12px 22px; }
  .nav-brand { font-size: 14px; letter-spacing: 0.22em; }
  .nav-cta { padding: 8px 14px; font-size: 11px; letter-spacing: 0.2em; }

  .hero { min-height: 620px; }
  .hero-inner { padding: 0 24px 60px; grid-template-columns: 1fr; }
  .hero-tagline {
    grid-column: 1;
    justify-self: end;
    font-size: 22px;
    letter-spacing: 0.4em;
  }
  .hero-corner.tl, .hero-corner.tr {
    left: 22px;
    right: auto;
    text-align: left;
    max-width: calc(100% - 44px);
  }
  .hero-corner.tl { top: 78px; font-size: 9px; letter-spacing: 0.22em; }
  .hero-corner.tr { top: 100px; font-size: 10px; letter-spacing: 0.3em; }
  .hero-corner.bl { display: none; }
  .hero-corner.br { bottom: 30px; right: 22px; }
  .hero-corner.br .val { font-size: 20px; }
  .hero-scroll { display: none; }

  .container, .container-narrow { padding: 0 24px; }
  section { padding: 90px 0; }

  .chapter-marker { margin-bottom: 40px; font-size: 10px; }
  .chapter-marker .num { font-size: 28px; }
  .section-title { font-size: 26px; letter-spacing: 0.12em; }
  .section-lead { font-size: 14.5px; line-height: 2.1; }

  .prologue { padding: 100px 0; }
  .prologue-title { font-size: 22px; line-height: 2.2; letter-spacing: 0.15em; }
  .prologue-body { font-size: 14px; line-height: 2.2; }

  .difference-grid { grid-template-columns: 1fr; gap: 50px; }
  .difference-image { aspect-ratio: 4/5; max-width: 100%; }

  .gallery-header { grid-template-columns: 1fr; gap: 30px; }
  .day-night-toggle { justify-self: start; }
  .gallery-grid { gap: 12px; }

  /* モバイルはシンプルな1カラム風に */
  .gallery-day .g-1,
  .gallery-day .g-2,
  .gallery-day .g-3,
  .gallery-day .g-4,
  .gallery-day .g-5,
  .gallery-day .g-6 {
    grid-column: 1 / 13;
    margin-top: 0;
    aspect-ratio: 4/3;
  }
  .gallery-day .g-2 { aspect-ratio: 4/5; }
  .gallery-night .g-1,
  .gallery-night .g-2,
  .gallery-night .g-3,
  .gallery-night .g-4 {
    grid-column: 1 / 13;
    margin-top: 0;
    aspect-ratio: 4/3;
  }
  .gallery-item .caption { font-size: 10px; bottom: 14px; left: 14px; }

  .design-intro { grid-template-columns: 1fr; gap: 40px; margin-bottom: 60px; }
  .design-blocks { grid-template-columns: 1fr; gap: 40px; }
  .materials-strip { grid-template-columns: repeat(2, 1fr); gap: 30px; margin-top: 70px; padding-top: 40px; }

  .perf-grid { grid-template-columns: 1fr; gap: 20px; margin-top: 50px; }
  .perf-card { padding: 32px 28px; }
  .perf-card-value { font-size: 28px; }
  .perf-footnote { grid-template-columns: 1fr; gap: 24px; }

  .location-hero { aspect-ratio: 4/3; margin-bottom: 50px; }
  .location-hero .location-quote { font-size: 16px; bottom: 24px; left: 24px; }
  .location-info { grid-template-columns: 1fr; gap: 40px; }
  .access-line .time { font-size: 18px; }

  .del-item {
    grid-template-columns: 1fr;
    gap: 24px;
    padding: 40px 0;
  }
  .del-num { font-size: 28px; }
  .del-concern { font-size: 17px; }
  .del-answer { font-size: 13.5px; }

  .overview-grid { grid-template-columns: 1fr; gap: 0; }
  .ov-row { grid-template-columns: 110px 1fr; gap: 20px; font-size: 13px; padding: 18px 0; }
  .ov-key { font-size: 12px; letter-spacing: 0.2em; }

  .cta { padding: 100px 0 80px; }
  .cta::before { inset: 20px; }
  .cta-title { font-size: 21px; letter-spacing: 0.2em; line-height: 2.2; }
  .cta-price { font-size: 36px; }
  .cta-buttons { flex-direction: column; align-items: center; gap: 14px; }
  .cta-btn { width: 100%; max-width: 320px; min-width: unset; padding: 18px 24px; font-size: 13px; letter-spacing: 0.25em; }
  .cta-contact .tel { font-size: 18px; }
  .cta-contact .tel-hours { font-size: 11px; letter-spacing: 0.25em; }
}

/* さらに狭い画面（iPhone SE等）: ブランド名の折り返しでナビが縦に伸び、
   ヒーロー左上コーナーラベルと重なるのを防ぐ */
@media (max-width: 400px) {
  .nav-brand { font-size: 12px; letter-spacing: 0.16em; }
  .hero-corner.tl { top: 92px; }
  .hero-corner.tr { top: 112px; }
}