/* ============================================================
   〔SERVICE〕 LP — style.css
   配色・サイズのカスタマイズはここの CSS 変数で一括管理
   テーマ：爽やかな水色 × 白（ライトテーマ）
   ============================================================ */

/* ===== Design Tokens ===== */
:root {
  /* Colors — 白ベース × 爽やかな水色アクセント */
  --color-bg:        #ffffff;   /* 白 */
  --color-bg-alt:    #f0f8ff;   /* ごく淡い水色（セクション交互背景） */
  --color-bg-tint:   #e3f2fd;   /* 水色がかった背景 */
  --color-bg-card:   #ffffff;   /* カード背景 */
  --color-ink:       #18324a;   /* メインテキスト（濃紺グレー） */
  --color-ink-soft:  #5a7894;   /* サブテキスト */
  --color-accent:    #29a3ff;   /* アクセント：爽やかな水色ブルー */
  --color-accent-dark: #1488e6;
  --color-accent-light: #7cc8ff;
  --color-accent-glow: rgba(41, 163, 255, 0.18);
  --color-after:     #e6f7ee;
  --color-after-text:#11935a;
  --color-border:    rgba(41, 163, 255, 0.18);
  --color-border-soft: rgba(24, 50, 74, 0.08);

  /* Typography */
  --font-base: 'Noto Sans JP', sans-serif;
  --text-xs:   0.75rem;
  --text-sm:   0.875rem;
  --text-base: 1rem;
  --text-lg:   1.125rem;
  --text-xl:   1.25rem;
  --text-2xl:  1.5rem;
  --text-3xl:  1.875rem;
  --text-4xl:  2.25rem;

  /* Spacing */
  --section-py:    clamp(4rem, 10vw, 8rem);
  --container-max: 1040px;
  --container-px:  1.25rem;

  /* Effects */
  --radius:      14px;
  --transition:  0.3s ease;
  --shadow-card: 0 8px 30px rgba(41, 163, 255, 0.1);
  --shadow-soft: 0 4px 20px rgba(24, 50, 74, 0.06);
}

/* ===== Reset & Base ===== */
*, *::before, *::after { box-sizing: border-box; margin: 0; padding: 0; }
html { scroll-behavior: smooth; font-size: 16px; }
body {
  font-family: var(--font-base);
  background: var(--color-bg);
  color: var(--color-ink);
  line-height: 1.7;
  -webkit-font-smoothing: antialiased;
}
img { display: block; max-width: 100%; height: auto; }
a { color: inherit; text-decoration: none; }
ul, ol { list-style: none; }

/* ===== Container ===== */
.container {
  max-width: var(--container-max);
  margin-inline: auto;
  padding-inline: var(--container-px);
}

/* ===== Buttons ===== */
.btn {
  display: inline-block;
  padding: 1rem 2rem;
  border-radius: 50px;
  font-weight: 700;
  font-size: var(--text-base);
  cursor: pointer;
  transition: opacity var(--transition), transform var(--transition), box-shadow var(--transition);
  text-align: center;
  letter-spacing: 0.02em;
}
.btn:hover { transform: translateY(-2px); }
.btn:active { transform: translateY(0); }

.btn-primary {
  background: linear-gradient(135deg, var(--color-accent) 0%, var(--color-accent-dark) 100%);
  color: #fff;
  box-shadow: 0 6px 20px rgba(41, 163, 255, 0.35);
}
.btn-primary:hover { box-shadow: 0 10px 28px rgba(41, 163, 255, 0.45); }

/* ===== Section common ===== */
.section { padding-block: var(--section-py); }

.section-label {
  font-size: var(--text-sm);
  font-weight: 700;
  letter-spacing: 0.2em;
  color: var(--color-accent);
  text-transform: uppercase;
  margin-bottom: 0.5rem;
}

.section-heading {
  font-size: clamp(var(--text-2xl), 5vw, var(--text-4xl));
  font-weight: 900;
  line-height: 1.3;
  margin-bottom: 1.5rem;
  color: var(--color-ink);
}

/* ===== Fade-in ===== */
.fade-in {
  opacity: 0;
  transform: translateY(24px);
  transition: opacity 0.7s ease, transform 0.7s ease;
}
.fade-in.visible { opacity: 1; transform: none; }

/* ===== Image block ===== */
.img-block {
  border-radius: var(--radius);
  overflow: hidden;
  background: linear-gradient(135deg, var(--color-bg-tint) 0%, #f5fbff 100%);
  min-height: 260px;
  display: flex;
  align-items: center;
  justify-content: center;
}
.img-block img { width: 100%; height: 100%; object-fit: cover; }
/* 画像未配置時は枠ごと非表示（プレースホルダ枠は出さない） */
.img-block.img-fallback { display: none; }

/* ============================================================
   HEADER
   ============================================================ */
.site-header {
  position: sticky;
  top: 0;
  z-index: 100;
  background: rgba(255, 255, 255, 0.88);
  backdrop-filter: blur(14px);
  -webkit-backdrop-filter: blur(14px);
  border-bottom: 1px solid var(--color-border);
  transition: box-shadow var(--transition);
}
.site-header.scrolled { box-shadow: 0 4px 20px rgba(24, 50, 74, 0.08); }

.header-inner {
  display: flex;
  align-items: center;
  justify-content: space-between;
  max-width: var(--container-max);
  margin-inline: auto;
  padding: 1rem var(--container-px);
  gap: 1rem;
}

.logo { font-size: var(--text-xl); font-weight: 900; letter-spacing: 0.04em; color: var(--color-ink); flex-shrink: 0; }

.site-nav ul { display: flex; gap: 1.75rem; align-items: center; }
.site-nav a {
  font-size: var(--text-sm);
  font-weight: 500;
  color: var(--color-ink-soft);
  transition: color var(--transition);
  letter-spacing: 0.06em;
}
.site-nav a:hover { color: var(--color-accent); }

.nav-cta {
  background: var(--color-accent);
  color: #fff !important;
  padding: 0.5rem 1.1rem;
  border-radius: 50px;
  font-weight: 700 !important;
  transition: opacity var(--transition) !important;
}
.nav-cta:hover { opacity: 0.85; color: #fff !important; }

/* Hamburger */
.nav-toggle {
  display: none;
  flex-direction: column;
  justify-content: space-between;
  width: 28px; height: 20px;
  background: none; border: none; cursor: pointer; padding: 0; flex-shrink: 0;
}
.nav-toggle span {
  display: block; width: 100%; height: 2px;
  background: var(--color-ink); border-radius: 2px;
  transition: transform 0.3s ease, opacity 0.3s ease;
}
.nav-toggle[aria-expanded="true"] span:nth-child(1) { transform: translateY(9px) rotate(45deg); }
.nav-toggle[aria-expanded="true"] span:nth-child(2) { opacity: 0; }
.nav-toggle[aria-expanded="true"] span:nth-child(3) { transform: translateY(-9px) rotate(-45deg); }

/* ============================================================
   HERO（左にキャッチ・右に写真の分割レイアウト）
   ============================================================ */
.hero {
  position: relative;
  overflow: hidden;
  background: transparent;   /* 背景を透過（白）に */
  padding-block: clamp(3rem, 8vw, 6rem);
  min-height: calc(100svh - 64px);
  display: flex;
  align-items: center;
}

.hero-inner {
  position: relative;
  z-index: 1;
  display: grid;
  grid-template-columns: 1.1fr 0.9fr;
  gap: 3rem;
  align-items: center;
  width: 100%;
}

.hero-eyebrow {
  display: inline-block;
  font-size: var(--text-sm);
  font-weight: 700;
  letter-spacing: 0.08em;
  color: var(--color-accent-dark);
  background: rgba(41, 163, 255, 0.1);
  padding: 0.4em 1em;
  border-radius: 50px;
  margin-bottom: 1.25rem;
}

.hero-headline {
  font-size: clamp(2.2rem, 6vw, 4rem);
  font-weight: 900;
  line-height: 1.25;
  letter-spacing: 0.01em;
  margin-bottom: 1.25rem;
  color: var(--color-ink);
}

.hero-sub {
  font-size: clamp(var(--text-base), 2.2vw, var(--text-xl));
  color: var(--color-ink-soft);
  max-width: 520px;
  margin-bottom: 2.25rem;
  line-height: 1.85;
}

.hero-cta { font-size: clamp(var(--text-base), 2.2vw, var(--text-lg)); padding: 1.1rem 2.5rem; }

/* 透過PNG：箱・背景・影・枠をすべて撤去し、人物だけを表示 */
.hero-img-block {
  min-height: 0;
  background: transparent;
  border: none;
  border-radius: 0;
  box-shadow: none;
  display: block;
  overflow: visible;
}
.hero-img-block {
  display: flex;
  align-items: center;
  justify-content: center;
}
.hero-img-block img {
  width: 100%;
  height: auto;
  object-fit: contain;
}

/* ============================================================
   PROBLEM
   ============================================================ */
.section-problem { background: var(--color-bg-alt); }

.checklist { display: flex; flex-direction: column; gap: 0.875rem; margin-bottom: 2.5rem; }
.checklist li {
  display: flex;
  align-items: flex-start;
  gap: 0.875rem;
  font-size: var(--text-lg);
  padding: 1rem 1.25rem;
  background: var(--color-bg-card);
  border: 1px solid var(--color-border);
  border-radius: var(--radius);
  box-shadow: var(--shadow-soft);
  line-height: 1.6;
}
.checklist li::before {
  content: '';
  display: block;
  width: 22px; height: 22px; min-width: 22px;
  margin-top: 2px;
  background: var(--color-accent);
  border-radius: 50%;
  background-image: url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' viewBox='0 0 24 24' fill='none' stroke='%23fff' stroke-width='3' stroke-linecap='round' stroke-linejoin='round'%3E%3Cpolyline points='20 6 9 17 4 12'/%3E%3C/svg%3E");
  background-size: 13px; background-repeat: no-repeat; background-position: center;
}

.problem-emphasis {
  font-size: clamp(var(--text-lg), 3vw, var(--text-2xl));
  font-weight: 700;
  line-height: 1.65;
  color: var(--color-accent-dark);
  border-left: 4px solid var(--color-accent);
  padding-left: 1.25rem;
}

/* ============================================================
   CONCEPT
   ============================================================ */
.section-concept { background: var(--color-bg); }

.concept-inner {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 3.5rem;
  align-items: center;
}
.concept-text .section-heading { margin-bottom: 1.5rem; }
.concept-body { font-size: var(--text-lg); color: var(--color-ink-soft); line-height: 2; }
.concept-image .img-block {
  min-height: 360px;
  border: 1px solid var(--color-border);
  box-shadow: var(--shadow-card);
}

/* コンセプト：成長グラフ図（SVG） */
.concept-figure {
  margin: 0;
  background: linear-gradient(135deg, #f5fbff 0%, var(--color-bg-tint) 100%);
  border: 1px solid var(--color-border);
  border-radius: var(--radius);
  box-shadow: var(--shadow-card);
  padding: 1.5rem 1.5rem 1.25rem;
}
.concept-figure svg { width: 100%; height: auto; display: block; }
.cf-axisline { stroke: rgba(24, 50, 74, 0.25); stroke-width: 1.5; }
.cf-step-label { fill: #0a4d8c; font-size: 15px; font-weight: 700; text-anchor: middle; font-family: var(--font-base); }
.cf-step-label--goal { fill: #fff; }
.cf-step-sub { fill: #fff; font-size: 11px; font-weight: 900; text-anchor: middle; letter-spacing: 0.12em; font-family: var(--font-base); }
.concept-figcaption {
  margin-top: 1rem;
  font-size: var(--text-sm);
  color: var(--color-ink-soft);
  line-height: 1.7;
  text-align: center;
}
.concept-figcaption strong { color: var(--color-accent-dark); }

/* ============================================================
   SERVICE
   ============================================================ */
.section-service { background: var(--color-bg-alt); }

.service-lead {
  font-size: var(--text-lg);
  color: var(--color-ink-soft);
  margin-bottom: 3rem;
  max-width: 680px;
  line-height: 1.9;
}

.steps-wrapper { display: flex; flex-direction: column; margin-bottom: 2.5rem; }

.step-card {
  position: relative;
  background: var(--color-bg-card);
  border: 1px solid var(--color-border);
  border-radius: var(--radius);
  padding: 1.75rem 1.5rem;
  box-shadow: var(--shadow-soft);
}
.step-card + .step-card { margin-top: 28px; }
.step-card--last { }

.step-header { display: flex; align-items: center; gap: 0.75rem; margin-bottom: 0.875rem; }
.step-num {
  font-size: var(--text-3xl);
  font-weight: 900;
  color: var(--color-accent);
  line-height: 1;
  letter-spacing: -0.02em;
}
.step-icon { font-size: var(--text-xl); line-height: 1; }

.step-title {
  font-size: var(--text-xl);
  font-weight: 700;
  display: flex;
  align-items: center;
  flex-wrap: wrap;
  gap: 0.5rem;
  margin-bottom: 0.625rem;
}
.step-tag {
  font-size: var(--text-xs);
  font-weight: 700;
  background: var(--color-accent-glow);
  color: var(--color-accent-dark);
  border: 1px solid rgba(41, 163, 255, 0.3);
  padding: 0.2em 0.65em;
  border-radius: 4px;
  letter-spacing: 0.06em;
}
.step-desc { color: var(--color-ink-soft); line-height: 1.8; }

/* コネクター */
.step-connector {
  position: absolute;
  bottom: -28px; left: 50%;
  transform: translateX(-50%);
  display: flex; flex-direction: column; align-items: center;
  z-index: 1; height: 28px;
}
.connector-line { display: block; width: 2px; height: 16px; background: var(--color-accent); }
.connector-arrow { font-size: 10px; color: var(--color-accent); line-height: 1; }

.service-summary {
  background: linear-gradient(135deg, rgba(41, 163, 255, 0.1) 0%, rgba(41, 163, 255, 0.04) 100%);
  border: 1px solid rgba(41, 163, 255, 0.25);
  border-radius: var(--radius);
  padding: 1.75rem;
  font-size: var(--text-lg);
  line-height: 1.9;
  margin-bottom: 2.5rem;
}
.section-cta { text-align: center; }

/* ============================================================
   BEFORE / AFTER
   ============================================================ */
.section-before-after { background: var(--color-bg); }

.ba-grid { display: flex; flex-direction: column; gap: 0.875rem; }

.ba-head-row { display: grid; grid-template-columns: 1fr auto 1fr; gap: 0.5rem; padding: 0 0.25rem; }
.ba-head { font-size: var(--text-sm); font-weight: 700; letter-spacing: 0.08em; text-align: center; padding: 0.5rem; }
.ba-head--before { color: var(--color-ink-soft); }
.ba-head--after  { color: var(--color-after-text); }

.ba-item {
  display: grid;
  grid-template-columns: 1fr auto 1fr;
  align-items: center;
  gap: 0.5rem;
  background: var(--color-bg-card);
  border: 1px solid var(--color-border);
  border-radius: var(--radius);
  overflow: hidden;
  box-shadow: var(--shadow-soft);
}
.ba-before, .ba-after { padding: 1.1rem 1.25rem; font-size: var(--text-base); line-height: 1.65; }
.ba-before { color: var(--color-ink-soft); background: var(--color-bg-alt); }
.ba-after  { background: var(--color-after); color: var(--color-after-text); font-weight: 500; }

.ba-badge {
  display: none;
  font-size: var(--text-xs); font-weight: 700; letter-spacing: 0.08em;
  padding: 0.2em 0.6em; border-radius: 4px; margin-bottom: 0.35rem;
}
.ba-badge--before { background: rgba(90, 120, 148, 0.12); color: var(--color-ink-soft); }
.ba-badge--after  { background: rgba(17, 147, 90, 0.12); color: var(--color-after-text); }

.ba-arrow {
  font-size: var(--text-lg);
  color: var(--color-accent);
  font-weight: 700;
  text-align: center;
  padding: 0 0.25rem;
  white-space: nowrap;
}

/* ============================================================
   FLOW
   ============================================================ */
.section-flow { background: var(--color-bg-alt); }

.flow-list { display: flex; flex-direction: column; }
.flow-item { display: flex; align-items: flex-start; gap: 1.25rem; position: relative; padding-bottom: 2.25rem; }
.flow-item:not(.flow-item--last)::after {
  content: '';
  position: absolute;
  left: 21px; top: 44px; bottom: 0;
  width: 2px;
  background: linear-gradient(to bottom, var(--color-accent), transparent);
}
.flow-num {
  width: 44px; height: 44px; min-width: 44px;
  border-radius: 50%;
  background: var(--color-accent);
  color: #fff;
  font-weight: 900; font-size: var(--text-lg);
  display: flex; align-items: center; justify-content: center;
  box-shadow: 0 4px 14px rgba(41, 163, 255, 0.4);
}
.flow-title { font-size: var(--text-xl); font-weight: 700; margin-bottom: 0.25rem; }
.flow-desc  { color: var(--color-ink-soft); }

/* ============================================================
   PLAN
   ============================================================ */
.section-plan { background: var(--color-bg); }

.plan-lead {
  font-size: var(--text-lg);
  color: var(--color-ink-soft);
  line-height: 1.9;
  max-width: 720px;
  margin: 0 auto 2.5rem;
  text-align: center;
}
.plan-lead strong { color: var(--color-accent-dark); font-weight: 700; }

.plan-card {
  position: relative;
  background: var(--color-bg-card);
  border: 2px solid var(--color-accent);
  border-radius: var(--radius);
  padding: 2.5rem 2rem;
  max-width: 520px;
  margin-inline: auto;
  box-shadow: var(--shadow-card);
  text-align: center;
}
.plan-badge {
  position: absolute; top: -14px; left: 50%; transform: translateX(-50%);
  background: var(--color-accent); color: #fff;
  font-size: var(--text-xs); font-weight: 700; letter-spacing: 0.14em;
  padding: 0.3em 1.1em; border-radius: 20px;
}
.plan-name { font-size: var(--text-2xl); font-weight: 900; margin-bottom: 1rem; line-height: 1.4; }
.plan-name span { font-size: var(--text-lg); }
.plan-desc { color: var(--color-ink-soft); margin-bottom: 1.5rem; line-height: 1.8; }
.plan-includes { display: flex; flex-direction: column; gap: 0.4rem; margin-bottom: 1.75rem; text-align: left; }
.plan-includes span { font-size: var(--text-sm); color: var(--color-after-text); font-weight: 500; }
.plan-price {
  display: flex; align-items: baseline; justify-content: center; gap: 0.5rem;
  margin-bottom: 1.75rem; padding: 1rem;
  background: var(--color-bg-alt); border-radius: 8px;
}
.price-from { font-size: var(--text-sm); color: var(--color-ink-soft); }
.price-value { font-size: clamp(var(--text-2xl), 5vw, var(--text-4xl)); font-weight: 900; color: var(--color-accent); }
.plan-cta { width: 100%; }
.plan-note { text-align: center; font-size: var(--text-sm); color: var(--color-ink-soft); margin-top: 1.5rem; line-height: 1.8; }

/* 単体プラン */
.plan-single-label {
  text-align: center;
  font-size: var(--text-lg);
  font-weight: 700;
  color: var(--color-accent-dark);
  margin: 3rem 0 1.5rem;
}
.single-plans {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 1rem;
}
.single-card {
  background: var(--color-bg-card);
  border: 1px solid var(--color-border);
  border-radius: var(--radius);
  box-shadow: var(--shadow-soft);
  padding: 1.5rem 1rem;
  text-align: center;
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 0.4rem;
  transition: transform var(--transition), box-shadow var(--transition);
}
.single-card:hover { transform: translateY(-4px); box-shadow: var(--shadow-card); }
.single-icon {
  width: 52px; height: 52px;
  display: flex; align-items: center; justify-content: center;
  border-radius: 50%;
  background: var(--color-accent-glow);
  color: var(--color-accent-dark);
  margin-bottom: 0.4rem;
}
.single-icon svg { width: 26px; height: 26px; }
.single-name { font-size: var(--text-base); font-weight: 700; line-height: 1.4; color: var(--color-ink); }
.single-tag {
  font-size: var(--text-xs);
  font-weight: 700;
  color: var(--color-accent-dark);
  background: var(--color-accent-glow);
  border-radius: 4px;
  padding: 0.15em 0.7em;
  letter-spacing: 0.06em;
}
.single-price {
  margin-top: auto;
  padding-top: 0.6rem;
  font-size: var(--text-sm);
  font-weight: 700;
  color: var(--color-ink);
}
.single-price span {
  display: block;
  font-size: var(--text-xs);
  font-weight: 500;
  color: var(--color-ink-soft);
  margin-bottom: 0.15rem;
}

/* ============================================================
   FAQ
   ============================================================ */
.section-faq { background: var(--color-bg-alt); }

.faq-list { display: flex; flex-direction: column; gap: 0.75rem; }
.faq-item {
  background: var(--color-bg-card);
  border: 1px solid var(--color-border);
  border-radius: var(--radius);
  overflow: hidden;
  box-shadow: var(--shadow-soft);
}
.faq-q button {
  width: 100%; text-align: left;
  background: none; border: none; cursor: pointer;
  color: var(--color-ink); font-family: var(--font-base);
  font-size: var(--text-base); font-weight: 700;
  padding: 1.25rem 1.5rem;
  display: flex; justify-content: space-between; align-items: center; gap: 1rem;
  transition: background var(--transition);
}
.faq-q button:hover { background: rgba(41, 163, 255, 0.05); }
.faq-q button::after {
  content: '+'; font-size: var(--text-xl); font-weight: 300;
  color: var(--color-accent); flex-shrink: 0;
  transition: transform var(--transition);
}
.faq-q button[aria-expanded="true"]::after { transform: rotate(45deg); }
.faq-a { padding: 0 1.5rem 1.25rem; color: var(--color-ink-soft); line-height: 1.8; }

/* ============================================================
   CLOSING CTA（水色グラデ・白文字）
   ============================================================ */
.section-closing {
  position: relative; overflow: hidden;
  padding-block: calc(var(--section-py) * 1.1);
  text-align: center;
  background: linear-gradient(135deg, var(--color-accent) 0%, var(--color-accent-dark) 100%);
}
.section-closing::before {
  content: '';
  position: absolute;
  top: -30%; left: -10%;
  width: 50vw; height: 50vw; max-width: 600px; max-height: 600px;
  background: radial-gradient(circle, rgba(255,255,255,0.16) 0%, transparent 65%);
}
.closing-bg { position: absolute; inset: 0; }
.closing-bg img { width: 100%; height: 100%; object-fit: cover; opacity: 0.18; }
.closing-overlay { position: absolute; inset: 0; }
.closing-content { position: relative; z-index: 1; }
.closing-headline {
  font-size: clamp(var(--text-2xl), 5vw, var(--text-4xl));
  font-weight: 900; line-height: 1.3; margin-bottom: 1.5rem; color: #fff;
}
.closing-body {
  font-size: clamp(var(--text-base), 2vw, var(--text-lg));
  color: rgba(255, 255, 255, 0.92);
  max-width: 600px; margin-inline: auto; margin-bottom: 2.5rem; line-height: 2;
}
.closing-cta {
  font-size: clamp(var(--text-base), 2vw, var(--text-lg));
  padding: 1.1rem 2.5rem;
  background: #fff !important;
  color: var(--color-accent-dark) !important;
  box-shadow: 0 8px 24px rgba(0,0,0,0.18) !important;
}

/* ============================================================
   FOOTER
   ============================================================ */
.site-footer {
  background: var(--color-ink);
  color: #fff;
  padding-block: 2.5rem;
}
.footer-inner { display: flex; flex-direction: column; align-items: center; gap: 1.25rem; text-align: center; }
.footer-logo { font-size: var(--text-xl); font-weight: 900; letter-spacing: 0.04em; color: #fff; }
.footer-nav ul { display: flex; flex-wrap: wrap; justify-content: center; gap: 1rem 1.5rem; }
.footer-nav a { font-size: var(--text-sm); color: rgba(255,255,255,0.7); letter-spacing: 0.06em; transition: color var(--transition); }
.footer-nav a:hover { color: var(--color-accent-light); }
.footer-legal { display: flex; flex-wrap: wrap; justify-content: center; gap: 0.75rem 1.25rem; }
.footer-legal-link { font-size: var(--text-xs); color: rgba(255,255,255,0.6); text-decoration: underline; transition: color var(--transition); }
.footer-legal-link:hover { color: #fff; }
.footer-copy { font-size: var(--text-xs); color: rgba(255,255,255,0.5); }

/* ============================================================
   STICKY CTA
   ============================================================ */
.sticky-cta {
  display: none;
  position: fixed; bottom: 0; left: 0; right: 0;
  z-index: 200;
  padding: 0.75rem var(--container-px) 0.875rem;
  background: linear-gradient(to top, rgba(255,255,255,0.98) 65%, transparent);
}
.sticky-cta-btn { display: block; width: 100%; text-align: center; padding: 1rem; font-size: var(--text-base); }

/* ============================================================
   RESPONSIVE
   ============================================================ */
@media (min-width: 640px) { :root { --container-px: 2rem; } }

/* ---- Mobile only (〜767px) ---- */
@media (max-width: 767px) {
  .nav-toggle { display: flex; }
  .site-nav {
    display: none;
    position: absolute; top: 100%; left: 0; right: 0;
    background: rgba(255, 255, 255, 0.98);
    backdrop-filter: blur(12px);
    border-bottom: 1px solid var(--color-border);
    box-shadow: var(--shadow-soft);
    padding: 1.25rem var(--container-px);
  }
  .site-nav.open { display: block; }
  .site-nav ul { flex-direction: column; gap: 0; align-items: stretch; }
  .site-nav li { border-bottom: 1px solid var(--color-border-soft); }
  .site-nav li:last-child { border-bottom: none; }
  .site-nav a { display: block; padding: 0.875rem 0; font-size: var(--text-base); }
  .nav-cta { background: none !important; box-shadow: none !important; color: var(--color-accent) !important; padding: 0.875rem 0 !important; }

  .pc-only { display: none; }
  .sticky-cta { display: block; }

  /* Hero: 縦積み（テキスト→画像） */
  /* スマホ：縦積み（キャッチ → 写真） */
  .hero { min-height: auto; padding-block: 3rem 5rem; }
  .hero-inner { grid-template-columns: 1fr; gap: 2rem; }
  .hero-img-block { order: 2; }

  /* Concept: 縦 */
  .concept-inner { grid-template-columns: 1fr; gap: 2rem; }

  /* Before/After スマホ: カード積み（flexで余白を詰める） */
  .ba-head-row { display: none; }
  .ba-item {
    display: flex;
    flex-direction: column;
    align-items: stretch;
    gap: 0;
  }
  .ba-before, .ba-after {
    padding: 1rem 1.25rem;
    display: flex;
    flex-direction: column;
    align-items: flex-start;
  }
  .ba-arrow {
    text-align: center;
    padding: 0.35rem 0;
    line-height: 1;
    transform: rotate(90deg);
    font-size: var(--text-lg);
    background: transparent;
    color: var(--color-accent);
  }
  .ba-badge { display: inline-block; }

  .steps-wrapper { flex-direction: column; }

  /* 単体プラン：スマホは2列 */
  .single-plans { grid-template-columns: repeat(2, 1fr); gap: 0.75rem; }
}

/* ---- Desktop (768px+) ---- */
@media (min-width: 768px) {
  :root { --container-px: 2rem; }
  .pc-only { display: inline; }
  .sticky-cta { display: none !important; }

  /* Steps: 横並び */
  .steps-wrapper { flex-direction: row; align-items: stretch; gap: 1.5rem; }
  .step-card { flex: 1; display: flex; flex-direction: column; }
  .step-card + .step-card { margin-top: 0; }
  .step-connector { display: none; }

  /* FLOW: 横並び */
  .flow-list { flex-direction: row; gap: 0; }
  .flow-item { flex: 1; flex-direction: column; align-items: center; text-align: center; padding-bottom: 0; padding-right: 1rem; }
  .flow-item:not(.flow-item--last)::after {
    left: auto; right: -1px; top: 22px; bottom: auto;
    width: 2px; height: calc(100% - 22px); background: none;
  }

  .ba-badge { display: none; }

  /* HERO: 人物画像をPCで約2倍に拡大（透過PNGなので周囲は透明のまま広がる） */
  .hero-img-block { overflow: visible; }
  .hero-img-block img { transform: scale(2); transform-origin: center; }
}

@media (min-width: 1024px) { :root { --container-px: 1.25rem; } }