/* ==========================================================================
   みどり不動産株式会社 収益不動産売却LP スタイルシート
   コンセプト：Luxury, Quiet, Trust, Professional, Minimal
   フロー：①価値 → ②悩み → ③理由 → ④強み → ⑤実績 → ⑥安心 → ⑦LINE
   ========================================================================== */

/* --- 1. デザインシステム --- */
:root {
  /* 背景カラー */
  --color-bg-light: #fbfbf9;
  --color-bg-pure: #ffffff;
  --color-bg-dark: #0f1412;
  --color-bg-dark-card: #151c18;
  --color-bg-dark-accent: #1a231f;

  /* テキストカラー */
  --color-text-main: #181d1b;
  --color-text-muted: #5e6662;
  --color-text-light: #f7f8f6;
  --color-text-light-muted: #aab2ad;

  /* アクセントカラー */
  --color-gold: #c39b5b;
  --color-gold-hover: #d8af6d;
  --color-gold-glow: rgba(195, 155, 91, 0.28);
  --color-forest: #1e3328;

  /* LINE公式カラー（気品あるエメラルドグラデーション） */
  --color-line-grad-1: #07b54e;
  --color-line-grad-2: #058f3e;

  /* ボーダー・ライン */
  --border-light: rgba(0, 0, 0, 0.08);
  --border-dark: rgba(255, 255, 255, 0.1);
  --border-gold: rgba(195, 155, 91, 0.35);

  /* タイポグラフィシステム */
  --font-serif: "Noto Serif JP", "Yu Mincho", "YuMincho", "Hiragino Mincho ProN", serif;
  --font-sans: "Plus Jakarta Sans", "Noto Sans JP", -apple-system, BlinkMacSystemFont, "Segoe UI", sans-serif;
  --font-en: "Cinzel", "Marcellus", serif;
  --font-number: "Marcellus", "Cinzel", serif;

  /* アニメーション */
  --transition-smooth: all 0.35s cubic-bezier(0.16, 1, 0.3, 1);
}

/* --- 2. リセット & ベース --- */
*, *::before, *::after {
  box-sizing: border-box;
  margin: 0;
  padding: 0;
}

html {
  font-size: 16px;
  scroll-behavior: smooth;
  -webkit-text-size-adjust: 100%;
}

body {
  font-family: var(--font-serif);
  color: var(--color-text-main);
  background-color: var(--color-bg-light);
  line-height: 1.85;
  letter-spacing: 0.05em;
  -webkit-font-smoothing: antialiased;
  -moz-osx-font-smoothing: grayscale;
  overflow-x: hidden;
}

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

a {
  color: inherit;
  text-decoration: none;
  transition: var(--transition-smooth);
}

button {
  background: none;
  border: none;
  cursor: pointer;
  font-family: inherit;
}

/* --- 3. レイアウトユーティリティ --- */
.container {
  width: 100%;
  max-width: 1140px;
  margin: 0 auto;
  padding: 0 32px;
}

.container-narrow {
  width: 100%;
  max-width: 860px;
  margin: 0 auto;
  padding: 0 32px;
}

.text-center {
  text-align: center;
}

.gold-text {
  color: var(--color-gold);
}

/* 垂直視線誘導コネクターライン */
.section-connector {
  display: flex;
  justify-content: center;
  margin-bottom: 24px;
}

.connector-line {
  width: 1px;
  height: 36px;
  background: linear-gradient(180deg, rgba(0, 0, 0, 0.25) 0%, rgba(0, 0, 0, 0.05) 100%);
}

.connector-dark .connector-line {
  background: linear-gradient(180deg, rgba(255, 255, 255, 0.35) 0%, rgba(255, 255, 255, 0.05) 100%);
}

.connector-gold .connector-line {
  background: linear-gradient(180deg, var(--color-gold) 0%, rgba(195, 155, 91, 0.1) 100%);
}

/* セクション共通見出し */
.section-header-wrap {
  margin-bottom: 48px;
}

.section-tag {
  display: inline-block;
  font-family: var(--font-en);
  font-size: 0.85rem;
  letter-spacing: 0.28em;
  text-transform: uppercase;
  color: var(--color-gold);
  margin-bottom: 14px;
  font-weight: 500;
  position: relative;
  padding-left: 24px;
}

.section-tag::before {
  content: "";
  position: absolute;
  left: 0;
  top: 50%;
  width: 14px;
  height: 1px;
  background-color: var(--color-gold);
}

.text-center .section-tag {
  padding-left: 0;
}

.text-center .section-tag::before {
  display: none;
}

.section-heading-serif {
  font-family: var(--font-serif);
  font-weight: 400;
  font-size: clamp(1.6rem, 3.2vw, 2.35rem);
  line-height: 1.45;
  letter-spacing: 0.08em;
  margin-bottom: 16px;
  text-wrap: balance;
}

.section-lead-text {
  font-family: var(--font-sans);
  font-size: 0.95rem;
  color: var(--color-text-muted);
  line-height: 1.8;
  letter-spacing: 0.04em;
}

/* スクロールフェードインアニメーション */
.reveal-on-scroll {
  opacity: 0;
  transform: translateY(18px);
  transition: opacity 0.8s cubic-bezier(0.16, 1, 0.3, 1), transform 0.8s cubic-bezier(0.16, 1, 0.3, 1);
  will-change: opacity, transform;
}

.reveal-on-scroll.is-visible {
  opacity: 1;
  transform: translateY(0);
}

/* --- 4. ヘッダー --- */
.site-header {
  position: fixed;
  top: 0;
  left: 0;
  width: 100%;
  z-index: 1000;
  padding: 18px 0;
  transition: var(--transition-smooth);
}

.site-header.is-scrolled {
  background-color: rgba(15, 20, 18, 0.94);
  backdrop-filter: blur(12px);
  -webkit-backdrop-filter: blur(12px);
  padding: 12px 0;
  border-bottom: 1px solid rgba(255, 255, 255, 0.08);
}

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

.header-logo {
  display: flex;
  flex-direction: column;
}

.header-logo-en {
  font-family: var(--font-en);
  font-size: 1.05rem;
  letter-spacing: 0.24em;
  color: #ffffff;
  font-weight: 500;
}

.header-logo-jp {
  font-family: var(--font-serif);
  font-size: 0.62rem;
  letter-spacing: 0.2em;
  color: var(--color-gold);
  margin-top: 2px;
  font-weight: 400;
}

.header-cta-btn {
  display: inline-flex;
  align-items: center;
  gap: 6px;
  padding: 8px 18px;
  font-family: var(--font-sans);
  font-size: 0.82rem;
  font-weight: 500;
  letter-spacing: 0.1em;
  color: #ffffff;
  background: rgba(7, 181, 78, 0.15);
  border: 1px solid rgba(7, 181, 78, 0.6);
  border-radius: 3px;
  transition: var(--transition-smooth);
}

.header-cta-btn:hover {
  background-color: var(--color-line-grad-1);
  color: #ffffff;
  border-color: var(--color-line-grad-1);
}

/* --- 5. SECTION 01: FIRST VIEW (#hero) --- */
.hero-section {
  position: relative;
  min-height: 88vh;
  display: flex;
  align-items: center;
  background-color: var(--color-bg-dark);
  color: var(--color-text-light);
  padding: 110px 0 60px;
  overflow: hidden;
}

.hero-background {
  position: absolute;
  top: 0;
  left: 0;
  width: 100%;
  height: 100%;
  z-index: 1;
}

.hero-bg-img {
  width: 100%;
  height: 100%;
  object-fit: cover;
  object-position: center;
  filter: brightness(0.65) contrast(1.05);
}

.hero-overlay {
  position: absolute;
  top: 0;
  left: 0;
  width: 100%;
  height: 100%;
  background: linear-gradient(
    90deg,
    rgba(15, 20, 18, 0.94) 0%,
    rgba(15, 20, 18, 0.75) 55%,
    rgba(15, 20, 18, 0.45) 100%
  );
}

.hero-content {
  position: relative;
  z-index: 2;
  max-width: 680px;
}

.hero-sub-title {
  font-family: var(--font-sans);
  font-size: clamp(0.92rem, 1.4vw, 1.05rem);
  font-weight: 500;
  letter-spacing: 0.12em;
  color: var(--color-gold);
  margin-bottom: 14px;
}

.hero-main-title {
  font-family: var(--font-serif);
  font-size: clamp(2.2rem, 4.8vw, 3.4rem);
  line-height: 1.35;
  font-weight: 400;
  letter-spacing: 0.1em;
  color: #ffffff;
  margin-bottom: 18px;
  text-shadow: 0 4px 20px rgba(0, 0, 0, 0.6);
  text-wrap: balance;
}

.hero-main-title .highlight-line {
  display: block;
}

.hero-desc {
  font-family: var(--font-serif);
  font-weight: 300;
  font-size: clamp(0.95rem, 1.3vw, 1.05rem);
  line-height: 2.0;
  letter-spacing: 0.06em;
  color: var(--color-text-light-muted);
  margin-bottom: 28px;
  border-left: 2px solid var(--color-gold);
  padding-left: 14px;
}

.hero-cta-wrap {
  display: flex;
  flex-direction: column;
  align-items: flex-start;
  gap: 12px;
}

/* 高CVRのLINE直接ボタン（上質エメラルドグリーン ＋ 控えめなゴールド光彩） */
.btn-hero-line {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 10px;
  background: linear-gradient(135deg, var(--color-line-grad-1) 0%, var(--color-line-grad-2) 100%);
  color: #ffffff;
  padding: 16px 40px;
  font-family: var(--font-sans);
  font-size: 1.05rem;
  font-weight: 600;
  letter-spacing: 0.1em;
  border-radius: 4px;
  box-shadow: 0 10px 28px rgba(7, 181, 78, 0.36), 0 0 0 1px rgba(255, 255, 255, 0.15) inset;
  transition: var(--transition-smooth);
}

.btn-hero-line:hover {
  transform: translateY(-2px);
  box-shadow: 0 14px 36px rgba(7, 181, 78, 0.48), 0 0 0 1px rgba(255, 255, 255, 0.25) inset;
}

.btn-arrow-icon {
  width: 14px;
  height: 14px;
  transition: transform 0.3s ease;
}

.btn-hero-line:hover .btn-arrow-icon {
  transform: translateX(4px);
}

.hero-trust-badges {
  display: flex;
  align-items: center;
  gap: 16px;
  color: rgba(255, 255, 255, 0.85);
  font-family: var(--font-sans);
  font-size: 0.82rem;
  letter-spacing: 0.04em;
}

.trust-badge {
  display: inline-flex;
  align-items: center;
}

.hero-scroll-link {
  display: inline-flex;
  align-items: center;
  gap: 6px;
  color: var(--color-gold);
  font-family: var(--font-sans);
  font-size: 0.82rem;
  letter-spacing: 0.08em;
  opacity: 0.9;
  padding: 4px 0;
  transition: opacity 0.2s ease, transform 0.2s ease;
}

.hero-scroll-link:hover {
  opacity: 1;
  transform: translateY(2px);
}

/* --- 6. SECTION 02: PROBLEM / 共感 (#problem) --- */
.section-problem {
  padding: 80px 0;
  background-color: var(--color-bg-pure);
}

.problem-list {
  display: flex;
  flex-direction: column;
  gap: 16px;
}

.problem-item {
  display: flex;
  align-items: center;
  gap: 20px;
  padding: 20px 24px;
  background-color: var(--color-bg-light);
  border: 1px solid var(--border-light);
  border-left: 3px solid var(--color-gold);
  border-radius: 2px;
  transition: var(--transition-smooth);
}

.problem-item:hover {
  border-color: var(--color-gold);
  transform: translateX(4px);
  background-color: #ffffff;
  box-shadow: 0 6px 20px rgba(0, 0, 0, 0.04);
}

.problem-mark {
  font-family: var(--font-number);
  font-size: 1.35rem;
  color: var(--color-gold);
  font-weight: 500;
  letter-spacing: 0.06em;
  flex-shrink: 0;
}

.problem-text {
  font-family: var(--font-serif);
  font-size: 1.05rem;
  color: var(--color-text-main);
  line-height: 1.6;
  letter-spacing: 0.04em;
}

/* --- 7. SECTION 03: REASON / なぜ売却価格に差が出るのか (#reason) --- */
.section-reason {
  padding: 86px 0;
  background-color: var(--color-bg-dark);
  color: var(--color-text-light);
}

.section-reason .section-lead-text {
  color: var(--color-text-light-muted);
}

.reason-diagram-grid {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 20px;
  margin-top: 36px;
}

.diagram-card {
  background-color: var(--color-bg-dark-card);
  border: 1px solid var(--border-dark);
  padding: 32px 24px;
  border-radius: 4px;
  transition: var(--transition-smooth);
  position: relative;
  overflow: hidden;
}

.diagram-card::before {
  content: "";
  position: absolute;
  top: 0;
  left: 0;
  width: 100%;
  height: 2px;
  background: linear-gradient(90deg, transparent, var(--color-gold), transparent);
  opacity: 0;
  transition: opacity 0.3s ease;
}

.diagram-card:hover {
  border-color: rgba(195, 155, 91, 0.4);
  transform: translateY(-4px);
  box-shadow: 0 12px 30px rgba(0, 0, 0, 0.4);
}

.diagram-card:hover::before {
  opacity: 1;
}

.diagram-num {
  font-family: var(--font-number);
  font-size: 1.6rem;
  color: var(--color-gold);
  margin-bottom: 12px;
  letter-spacing: 0.05em;
}

.diagram-title {
  font-family: var(--font-serif);
  font-size: 1.12rem;
  color: #ffffff;
  margin-bottom: 12px;
  font-weight: 500;
  letter-spacing: 0.06em;
}

.diagram-desc {
  font-family: var(--font-sans);
  font-size: 0.88rem;
  color: var(--color-text-light-muted);
  line-height: 1.8;
  letter-spacing: 0.03em;
}

/* --- 8. SECTION 04: MIDORI DIFFERENCE / みどり不動産の強み (#difference) --- */
.section-difference {
  padding: 90px 0;
  background-color: var(--color-bg-light);
}

.difference-grid {
  display: grid;
  grid-template-columns: 1fr 1.15fr;
  gap: 56px;
  align-items: center;
}

.difference-img-wrap {
  border-radius: 4px;
  overflow: hidden;
  box-shadow: 0 16px 40px rgba(0, 0, 0, 0.1);
  border: 1px solid var(--border-light);
}

.difference-img-wrap img {
  width: 100%;
  height: auto;
  aspect-ratio: 4 / 3;
  object-fit: cover;
  transition: transform 0.8s ease;
}

.difference-img-wrap:hover img {
  transform: scale(1.03);
}

.difference-title {
  font-size: clamp(1.3rem, 2.1vw, 1.75rem);
  line-height: 1.55;
  margin-bottom: 20px;
}

.difference-lead {
  font-family: var(--font-serif);
  font-size: 0.95rem;
  line-height: 2.0;
  color: var(--color-text-main);
  margin-bottom: 24px;
}

.difference-lead-intro {
  display: block;
  font-size: 1.02rem;
  font-weight: 600;
  color: #141c18;
  line-height: 1.85;
  margin-bottom: 16px;
  padding-bottom: 14px;
  border-bottom: 1px solid rgba(195, 155, 91, 0.25);
}

.sp-only {
  display: none;
}

.difference-core-box {
  background-color: #ffffff;
  border-left: 3px solid var(--color-gold);
  border-top: 1px solid var(--border-light);
  border-right: 1px solid var(--border-light);
  border-bottom: 1px solid var(--border-light);
  padding: 20px 24px;
  margin-bottom: 28px;
  border-radius: 2px;
}

.core-statement {
  font-family: var(--font-serif);
  font-size: 0.95rem;
  line-height: 1.9;
  color: #1a221e;
}

.core-statement strong {
  color: var(--color-text-main);
  font-weight: 600;
}

/* 中盤CTA */
.mid-cta-wrap {
  margin-top: 24px;
}

.btn-secondary {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 10px;
  background: linear-gradient(135deg, var(--color-line-grad-1) 0%, var(--color-line-grad-2) 100%);
  color: #ffffff;
  padding: 15px 36px;
  font-family: var(--font-sans);
  font-size: 0.98rem;
  font-weight: 600;
  letter-spacing: 0.08em;
  border-radius: 4px;
  box-shadow: 0 8px 24px rgba(7, 181, 78, 0.3);
  transition: var(--transition-smooth);
}

.btn-secondary:hover {
  transform: translateY(-2px);
  box-shadow: 0 12px 30px rgba(7, 181, 78, 0.42);
}

.btn-secondary:hover .btn-arrow-icon {
  transform: translateX(4px);
}

.cta-micro-note {
  font-family: var(--font-sans);
  font-size: 0.8rem;
  color: var(--color-text-muted);
  letter-spacing: 0.03em;
  margin-top: 10px;
}

/* --- 9. SECTION 05: CASE STUDY / 売却事例・実績 (#casestudy) --- */
.section-casestudy {
  padding: 86px 0;
  background-color: var(--color-bg-pure);
}

.case-cards-grid {
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  gap: 28px;
  max-width: 960px;
  margin: 36px auto 0;
}

.case-card {
  background-color: var(--color-bg-light);
  border: 1px solid var(--border-light);
  border-radius: 6px;
  padding: 32px 28px;
  display: flex;
  flex-direction: column;
  transition: var(--transition-smooth);
}

.case-card:hover {
  border-color: var(--color-gold);
  transform: translateY(-4px);
  box-shadow: 0 14px 32px rgba(0, 0, 0, 0.06);
}

.case-card-header {
  display: flex;
  justify-content: space-between;
  align-items: center;
  margin-bottom: 12px;
}

.case-badge {
  font-family: var(--font-en);
  font-size: 0.82rem;
  letter-spacing: 0.16em;
  color: var(--color-gold);
  font-weight: 600;
}

.case-area {
  font-family: var(--font-sans);
  font-size: 0.78rem;
  color: var(--color-text-muted);
  letter-spacing: 0.05em;
}

.case-property-name {
  font-family: var(--font-serif);
  font-size: 1.18rem;
  color: var(--color-text-main);
  margin-bottom: 8px;
  font-weight: 600;
}

.case-tagline {
  font-family: var(--font-serif);
  font-size: 0.96rem;
  font-weight: 600;
  color: #1b382b;
  line-height: 1.6;
  margin-bottom: 18px;
  padding-bottom: 12px;
  border-bottom: 1px dashed var(--border-light);
}

.case-body {
  display: flex;
  flex-direction: column;
  gap: 16px;
  flex-grow: 1;
}

.case-row {
  display: flex;
  flex-direction: column;
  gap: 4px;
}

.case-label {
  font-family: var(--font-sans);
  font-size: 0.76rem;
  color: var(--color-text-muted);
  letter-spacing: 0.06em;
  text-transform: uppercase;
}

.case-val {
  font-family: var(--font-serif);
  font-size: 0.88rem;
  line-height: 1.7;
  color: var(--color-text-main);
}

.case-result-box {
  margin-top: auto;
  padding-top: 14px;
  border-top: 1px dashed var(--border-light);
}

.result-label {
  display: inline-block;
  font-family: var(--font-en);
  font-size: 0.72rem;
  letter-spacing: 0.2em;
  color: #078c3e;
  font-weight: 600;
  margin-bottom: 4px;
}

.result-text {
  font-family: var(--font-sans);
  font-size: 0.88rem;
  font-weight: 600;
  color: #121915;
  line-height: 1.6;
}

/* --- 10. SECTION 06: FLOW / 売却の流れ (#flow) --- */
.section-flow {
  padding: 86px 0;
  background-color: var(--color-bg-dark);
  color: var(--color-text-light);
}

.section-flow .section-lead-text {
  color: var(--color-text-light-muted);
}

/* 4ステップの流れ */
.flow-steps-grid {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 18px;
  margin-top: 36px;
}

.flow-step-item {
  background-color: var(--color-bg-dark-card);
  border: 1px solid var(--border-dark);
  padding: 26px 20px;
  border-radius: 4px;
  position: relative;
  transition: var(--transition-smooth);
}

.flow-step-item:hover {
  border-color: rgba(195, 155, 91, 0.4);
  transform: translateY(-2px);
}

.step-num {
  font-family: var(--font-number);
  font-size: 1.4rem;
  color: var(--color-gold);
  margin-bottom: 8px;
  display: block;
}

.step-title {
  font-family: var(--font-serif);
  font-size: 1.05rem;
  color: #ffffff;
  margin-bottom: 10px;
  font-weight: 500;
}

.step-desc {
  font-family: var(--font-sans);
  font-size: 0.84rem;
  color: var(--color-text-light-muted);
  line-height: 1.8;
}

/* --- 11. SECTION 07: FINAL CTA (#contact) --- */
.section-final-cta {
  padding: 96px 0 80px;
  background-color: #0b0e0c;
  color: var(--color-text-light);
  border-top: 1px solid rgba(255, 255, 255, 0.06);
}

.final-cta-title {
  font-family: var(--font-serif);
  font-size: clamp(1.8rem, 4vw, 2.6rem);
  line-height: 1.4;
  letter-spacing: 0.08em;
  color: #ffffff;
  margin-bottom: 18px;
  text-wrap: balance;
}

.final-cta-desc {
  font-family: var(--font-serif);
  font-size: 0.98rem;
  line-height: 2.0;
  color: var(--color-text-light-muted);
  margin-bottom: 32px;
}

.final-cta-actions {
  display: flex;
  justify-content: center;
  margin-bottom: 20px;
}

.btn-line-luxurious {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  background: linear-gradient(135deg, var(--color-line-grad-1) 0%, var(--color-line-grad-2) 100%);
  color: #ffffff;
  padding: 19px 56px;
  font-family: var(--font-sans);
  font-size: 1.15rem;
  font-weight: 600;
  letter-spacing: 0.1em;
  border-radius: 4px;
  box-shadow: 0 12px 36px rgba(7, 181, 78, 0.38), 0 0 0 1px rgba(255, 255, 255, 0.15) inset;
  transition: var(--transition-smooth);
  max-width: 440px;
  width: 100%;
}

.btn-line-luxurious:hover {
  transform: translateY(-2px);
  box-shadow: 0 16px 46px rgba(7, 181, 78, 0.52), 0 0 0 1px rgba(255, 255, 255, 0.25) inset;
}

.final-reassurance-row {
  display: flex;
  justify-content: center;
  gap: 20px;
  font-family: var(--font-sans);
  font-size: 0.85rem;
  color: rgba(255, 255, 255, 0.85);
  margin-bottom: 14px;
  flex-wrap: wrap;
}

.final-cta-subnote {
  font-family: var(--font-sans);
  font-size: 0.78rem;
  color: rgba(255, 255, 255, 0.55);
  line-height: 1.6;
}

/* --- 12. フッター --- */
.site-footer {
  background-color: #060807;
  color: #6a736f;
  padding: 36px 0 24px;
  border-top: 1px solid rgba(255, 255, 255, 0.05);
  font-size: 0.82rem;
}

.footer-container {
  display: flex;
  justify-content: space-between;
  align-items: center;
  padding-bottom: 20px;
  margin-bottom: 16px;
  border-bottom: 1px solid rgba(255, 255, 255, 0.06);
}

.footer-company-name {
  font-family: var(--font-serif);
  font-size: 1.05rem;
  color: #ffffff;
  margin-bottom: 2px;
}

.footer-company-sub {
  font-size: 0.76rem;
  color: #88928d;
}

.footer-company-details {
  font-family: var(--font-sans);
  font-size: 0.74rem;
  color: #7a8480;
  line-height: 1.65;
  margin-top: 10px;
  letter-spacing: 0.04em;
}

.footer-branch-group {
  display: flex;
  flex-direction: column;
  gap: 10px;
  margin-bottom: 8px;
}

.footer-branch {
  display: flex;
  flex-wrap: wrap;
  align-items: baseline;
  gap: 6px 10px;
  font-size: 0.74rem;
  line-height: 1.6;
}

.branch-tag {
  display: inline-block;
  font-size: 0.74rem;
  font-weight: 600;
  color: #a3b0a9;
  letter-spacing: 0.04em;
  flex-shrink: 0;
}

.branch-address {
  color: #a3b0a9;
}

.branch-tel {
  color: #c4d1ca;
  font-family: var(--font-en);
  letter-spacing: 0.04em;
}

.footer-license {
  font-size: 0.72rem;
  color: #6d7873;
  margin-top: 6px;
}

.footer-top-link {
  display: inline-flex;
  align-items: center;
  gap: 6px;
  color: var(--color-gold);
  font-family: var(--font-en);
  letter-spacing: 0.16em;
  font-size: 0.82rem;
}

.footer-copyright {
  text-align: center;
  font-size: 0.75rem;
  color: #555d59;
  letter-spacing: 0.08em;
}

/* --- 13. スマホ用フローティング相談バー --- */
.floating-cta {
  position: fixed;
  bottom: 0;
  left: 0;
  width: 100%;
  z-index: 999;
  background-color: rgba(15, 20, 18, 0.95);
  backdrop-filter: blur(12px);
  -webkit-backdrop-filter: blur(12px);
  border-top: 1px solid rgba(195, 155, 91, 0.35);
  padding: 10px 18px calc(10px + env(safe-area-inset-bottom, 0px));
  display: flex;
  justify-content: space-between;
  align-items: center;
  transform: translateY(120%);
  opacity: 0;
  transition: transform 0.4s cubic-bezier(0.16, 1, 0.3, 1), opacity 0.4s ease;
  box-shadow: 0 -8px 24px rgba(0, 0, 0, 0.3);
}

.floating-cta.is-active {
  transform: translateY(0);
  opacity: 1;
}

.floating-cta.is-dismissed {
  display: none !important;
}

.floating-cta-text {
  font-family: var(--font-serif);
  font-size: 0.82rem;
  color: #ffffff;
  letter-spacing: 0.06em;
  line-height: 1.35;
}

.floating-cta-text span {
  display: block;
  font-family: var(--font-sans);
  font-size: 0.68rem;
  color: var(--color-gold);
  letter-spacing: 0.04em;
}

.floating-cta-actions {
  display: flex;
  align-items: center;
  gap: 8px;
}

.floating-cta-btn {
  display: inline-flex;
  align-items: center;
  gap: 6px;
  background: linear-gradient(135deg, var(--color-line-grad-1) 0%, var(--color-line-grad-2) 100%);
  color: #ffffff;
  padding: 9px 18px;
  font-family: var(--font-sans);
  font-size: 0.88rem;
  font-weight: 600;
  letter-spacing: 0.08em;
  border-radius: 3px;
  box-shadow: 0 4px 14px rgba(7, 181, 78, 0.4);
  touch-action: manipulation;
  white-space: nowrap;
}

.floating-cta-close {
  position: relative;
  display: inline-flex;
  align-items: center;
  justify-content: center;
  width: 24px;
  height: 24px;
  color: rgba(255, 255, 255, 0.5);
  font-size: 0.9rem;
  padding: 0;
  line-height: 1;
  background: transparent;
  border: none;
  cursor: pointer;
  touch-action: manipulation;
  transition: color 0.2s ease;
}

/* タップ可能領域のみ44px × 44pxを確保（見た目のレイアウトは維持） */
.floating-cta-close::before {
  content: "";
  position: absolute;
  top: 50%;
  left: 50%;
  transform: translate(-50%, -50%);
  width: 44px;
  height: 44px;
  min-width: 44px;
  min-height: 44px;
}

.floating-cta-close:hover {
  color: #ffffff;
}

/* --- 14. レスポンシブ対応（タブレット ＆ スマートフォン完全最適化） --- */

/* タブレット・中間サイズ (769px〜1024px) */
@media screen and (max-width: 1024px) {
  .hero-main-title {
    font-size: clamp(2rem, 4.2vw, 2.7rem);
  }

  .reason-diagram-grid {
    grid-template-columns: repeat(2, 1fr);
    gap: 16px;
  }

  .difference-grid {
    grid-template-columns: 1fr;
    gap: 36px;
  }

  .difference-img-wrap img {
    aspect-ratio: 16 / 9;
    max-height: 360px;
  }

  .case-cards-grid {
    grid-template-columns: repeat(2, 1fr);
  }

  .flow-steps-grid {
    grid-template-columns: repeat(2, 1fr);
  }
}

/* スマートフォン & 狭小画面 (〜768px) */
@media screen and (max-width: 768px) {
  .sp-only {
    display: inline;
  }

  /* 共通コンテナ */
  .container, .container-narrow {
    padding: 0 20px;
  }

  .section-header-wrap {
    margin-bottom: 32px;
  }

  /* ヘッダー */
  .site-header {
    padding: 12px 0;
  }

  .header-logo-en {
    font-size: 0.95rem;
    letter-spacing: 0.2em;
  }

  .header-logo-jp {
    font-size: 0.58rem;
  }

  .header-cta-btn {
    padding: 6px 12px;
    font-size: 0.74rem;
  }

  /* ① ファーストビュー：スマートフォン1画面内で完結する黄金比 */
  .hero-section {
    min-height: 100svh;
    min-height: 100dvh;
    padding: calc(56px + env(safe-area-inset-top, 0px)) 0 calc(20px + env(safe-area-inset-bottom, 0px));
    display: flex;
    align-items: center;
  }

  .hero-sub-title {
    font-size: 0.85rem;
    margin-bottom: 8px;
    letter-spacing: 0.08em;
  }

  .hero-main-title {
    font-size: clamp(1.72rem, 7.6vw, 2.2rem);
    line-height: 1.3;
    margin-bottom: 10px;
    letter-spacing: 0.07em;
  }

  .hero-desc {
    font-size: 0.82rem;
    line-height: 1.75;
    margin-bottom: 18px;
    padding-left: 10px;
  }

  .hero-cta-wrap {
    width: 100%;
    align-items: stretch;
    gap: 8px;
  }

  .btn-hero-line {
    width: 100%;
    min-height: 52px;
    padding: 14px 20px;
    font-size: 1.02rem;
    touch-action: manipulation;
  }

  .hero-trust-badges {
    justify-content: center;
    gap: 6px 12px;
    font-size: 0.74rem;
    margin-top: 4px;
  }

  .hero-scroll-link {
    justify-content: center;
    font-size: 0.76rem;
    margin-top: 6px;
  }

  /* ② 悩み共感 */
  .section-problem {
    padding: 56px 0;
  }

  .problem-item {
    padding: 16px 18px;
    gap: 14px;
  }

  .problem-mark {
    font-size: 1.2rem;
  }

  .problem-text {
    font-size: 0.94rem;
    line-height: 1.6;
  }

  /* ③ 理由図解 */
  .section-reason {
    padding: 60px 0;
  }

  .reason-diagram-grid {
    grid-template-columns: 1fr;
    gap: 14px;
  }

  .diagram-card {
    padding: 22px 20px;
  }

  /* ④ 強み */
  .section-difference {
    padding: 60px 0;
  }

  .difference-grid {
    gap: 28px;
  }

  .difference-img-wrap img {
    aspect-ratio: 16 / 9;
    max-height: 220px;
  }

  .difference-lead {
    font-size: 0.88rem;
    line-height: 1.85;
    margin-bottom: 18px;
  }

  .difference-core-box {
    padding: 16px 18px;
    margin-bottom: 22px;
  }

  .core-statement {
    font-size: 0.88rem;
    line-height: 1.8;
  }

  .btn-secondary {
    width: 100%;
    min-height: 50px;
    padding: 14px 20px;
    font-size: 0.96rem;
    touch-action: manipulation;
  }

  .cta-micro-note {
    text-align: center;
  }

  /* ⑤ 事例・実績 */
  .section-casestudy {
    padding: 60px 0;
  }

  .case-cards-grid {
    grid-template-columns: 1fr;
    gap: 16px;
  }

  .case-card {
    padding: 22px 20px;
  }

  /* ⑥ 流れ */
  .section-flow {
    padding: 60px 0;
  }

  .flow-steps-grid {
    grid-template-columns: 1fr;
    gap: 14px;
  }

  .flow-step-item {
    padding: 20px 18px;
  }

  /* ⑦ 最終CTA */
  .section-final-cta {
    padding: 56px 0 calc(50px + 60px);
  }

  .btn-line-luxurious {
    width: 100%;
    min-height: 54px;
    padding: 16px 20px;
    font-size: 1.06rem;
    touch-action: manipulation;
  }

  .final-reassurance-row {
    font-size: 0.78rem;
    gap: 10px 14px;
  }

  /* フッター */
  .site-footer {
    padding: 28px 0 calc(20px + 64px);
  }

  .footer-container {
    flex-direction: column;
    align-items: flex-start;
    gap: 12px;
  }
}