/* ============================================
   LIFT UP GYM（デザインサンプル）
   エナジェティック：ブラック×イエロー
   ============================================ */
:root {
  --ink: #1c1c1e;
  --sub: #6f6f74;
  --bg: #ffffff;
  --bg-alt: #f4f4f2;
  --dark: #17171a;
  --accent: #ffd400;
  --accent-text: #1c1c1e;
  --line: #e5e5e2;
  --radius: 8px;
  --en: "Oswald", sans-serif;
  --sans: "Noto Sans JP", "Hiragino Kaku Gothic ProN", sans-serif;
}

* { margin: 0; padding: 0; box-sizing: border-box; }
html { scroll-behavior: smooth; scroll-padding-top: 70px; }
body {
  font-family: var(--sans);
  color: var(--ink);
  background: var(--bg);
  line-height: 1.8;
  font-size: 15.5px;
}
img { max-width: 100%; height: auto; display: block; }
a { color: inherit; }
ul { list-style: none; }

/* ---- ヘッダー ---- */
.site-header {
  position: sticky; top: 0; z-index: 100;
  background: rgba(23, 23, 26, 0.96);
  color: #fff;
}
.header-inner {
  max-width: 1100px; margin: 0 auto; padding: 14px 20px;
  display: flex; align-items: center; justify-content: space-between;
}
.brand {
  font-family: var(--en); font-size: 22px; font-weight: 700;
  letter-spacing: 0.06em; text-decoration: none;
}
.brand span { color: var(--accent); }
.global-nav ul { display: flex; gap: 24px; align-items: center; }
.global-nav a {
  font-size: 13.5px; font-weight: 500; text-decoration: none; transition: 0.2s;
}
.global-nav a:hover { color: var(--accent); }
.nav-cta {
  background: var(--accent); color: var(--accent-text) !important;
  padding: 8px 18px; border-radius: 999px; font-weight: 700;
}
.nav-cta:hover { opacity: 0.85; }
.nav-toggle { display: none; background: none; border: none; cursor: pointer; padding: 8px; }
.nav-toggle span { display: block; width: 24px; height: 2px; background: #fff; margin: 5px 0; transition: 0.3s; }

/* ---- ヒーロー ---- */
.hero { position: relative; color: #fff; }
.hero-bg { position: absolute; inset: 0; overflow: hidden; }
.hero-bg img { width: 100%; height: 100%; object-fit: cover; }
.hero-bg::after {
  content: ""; position: absolute; inset: 0;
  background: linear-gradient(100deg, rgba(10, 10, 12, 0.82) 25%, rgba(10, 10, 12, 0.25) 75%);
}
.hero-overlay {
  position: relative; z-index: 2; max-width: 1100px; margin: 0 auto;
  padding: 120px 20px 130px;
}
.hero-en {
  font-family: var(--en); letter-spacing: 0.3em; font-size: 13px; color: var(--accent);
  margin-bottom: 14px;
}
.hero-lead {
  font-size: clamp(32px, 5.6vw, 52px); font-weight: 900; line-height: 1.4;
  margin-bottom: 16px;
}
.hero-lead em { font-style: normal; color: var(--accent); }
.hero-sub { font-size: 15px; margin-bottom: 34px; opacity: 0.92; }
.btn {
  display: inline-block; text-decoration: none; border-radius: 999px;
  padding: 15px 36px; font-weight: 700; font-size: 15px; transition: 0.2s;
}
.btn small { display: block; font-size: 11px; font-weight: 500; }
.btn-accent { background: var(--accent); color: var(--accent-text); box-shadow: 0 6px 18px rgba(255, 212, 0, 0.35); }
.btn-accent:hover { transform: translateY(-2px); }

/* ---- 実績カウンター ---- */
.stats { background: var(--dark); color: #fff; padding: 46px 20px 30px; }
.stats-inner {
  max-width: 900px; margin: 0 auto;
  display: grid; grid-template-columns: repeat(3, 1fr); gap: 20px; text-align: center;
}
.stat-num {
  font-family: var(--en); font-size: clamp(38px, 6vw, 56px); font-weight: 700;
  color: var(--accent);
}
.stat-unit { font-family: var(--en); font-size: 20px; color: var(--accent); margin-left: 2px; }
.stat p { font-size: 13px; opacity: 0.85; margin-top: 2px; }
.stats-note { text-align: center; font-size: 11px; opacity: 0.5; margin-top: 20px; }

/* ---- セクション共通 ---- */
.section { padding: 76px 0; }
.section-alt { background: var(--bg-alt); }
.section-dark { background: var(--dark); color: #fff; }
.container { max-width: 1100px; margin: 0 auto; padding: 0 20px; }
.container.narrow { max-width: 780px; }
.container.center { text-align: center; }
.section-title {
  font-size: clamp(22px, 3.4vw, 30px); font-weight: 900; text-align: center; margin-bottom: 40px;
}
.section-title.light { color: #fff; }
.section-title .en {
  display: block; font-family: var(--en); font-size: 13px; letter-spacing: 0.3em;
  color: var(--accent); text-transform: uppercase; margin-bottom: 8px; font-weight: 600;
}
.section-dark .section-title { color: #fff; }

/* ---- 選ばれる理由 ---- */
.reason-grid { display: grid; grid-template-columns: repeat(3, 1fr); gap: 26px; }
.reason-card { background: #fff; border: 1px solid var(--line); border-radius: var(--radius); overflow: hidden; }
.reason-card img { aspect-ratio: 4 / 3; object-fit: cover; width: 100%; }
.reason-card-text {
  aspect-ratio: 4 / 3; display: flex; align-items: center; justify-content: center;
  background: var(--dark);
}
.big-num { font-family: var(--en); font-size: 64px; font-weight: 700; color: var(--accent); }
.reason-card h3 { font-size: 16.5px; font-weight: 700; padding: 18px 20px 6px; }
.reason-card p { font-size: 13.5px; color: var(--sub); padding: 0 20px 22px; }

/* ---- 料金 ---- */
.price-grid { display: grid; grid-template-columns: repeat(3, 1fr); gap: 24px; }
.price-card {
  position: relative; background: #212126; border-radius: var(--radius);
  padding: 34px 28px; border: 1px solid #333338;
}
.price-card.is-popular { border: 2px solid var(--accent); }
.popular-badge {
  position: absolute; top: -14px; left: 50%; transform: translateX(-50%);
  background: var(--accent); color: var(--accent-text);
  font-size: 12px; font-weight: 700; padding: 4px 16px; border-radius: 999px;
}
.price-card h3 { font-size: 17px; font-weight: 700; margin-bottom: 12px; }
.price-num {
  font-family: var(--en); font-size: 40px; font-weight: 700; color: var(--accent);
  margin-bottom: 16px; line-height: 1.2;
}
.price-num span { font-family: var(--sans); font-size: 13px; font-weight: 500; color: #b9b9be; margin-left: 4px; }
.price-card ul li {
  font-size: 13.5px; padding: 8px 0 8px 22px; position: relative;
  border-bottom: 1px dashed #38383e; color: #d9d9dd;
}
.price-card ul li::before { content: "✓"; position: absolute; left: 0; color: var(--accent); font-weight: 700; }
.section-dark .note { text-align: center; margin-top: 30px; font-size: 14px; color: #d9d9dd; }
.section-dark .note strong { color: var(--accent); font-size: 18px; }

/* ---- お客様の声（スライダー） ---- */
.voice-slider { max-width: 720px; margin: 0 auto; overflow: hidden; }
.voice-track { display: flex; transition: transform 0.45s ease; }
.voice-card {
  flex: 0 0 100%; background: var(--bg-alt); border-radius: var(--radius);
  padding: 34px 36px; margin: 0;
}
.voice-card p { font-size: 15px; margin-bottom: 18px; }
.voice-card footer { font-size: 13px; color: var(--sub); display: flex; align-items: center; gap: 10px; }
.voice-avatar {
  width: 34px; height: 34px; border-radius: 50%; background: var(--dark); color: var(--accent);
  display: inline-flex; align-items: center; justify-content: center;
  font-family: var(--en); font-weight: 700;
}
.voice-nav { display: flex; align-items: center; justify-content: center; gap: 18px; margin-top: 22px; }
.voice-nav button {
  width: 40px; height: 40px; border-radius: 50%; border: 1px solid var(--line);
  background: #fff; cursor: pointer; font-size: 15px; transition: 0.2s;
}
.voice-nav button:hover { background: var(--dark); color: var(--accent); }
.voice-dots { display: flex; gap: 8px; }
.voice-dots button {
  width: 10px; height: 10px; border-radius: 50%; border: none; background: var(--line);
  cursor: pointer; padding: 0; transition: 0.2s;
}
.voice-dots button.is-active { background: var(--ink); transform: scale(1.2); }
#voice .note { text-align: center; font-size: 11px; color: var(--sub); margin-top: 18px; }

/* ---- FAQ ---- */
.faq-list { display: grid; gap: 14px; }
.faq-item {
  background: #fff; border: 1px solid var(--line); border-radius: var(--radius);
  overflow: hidden;
}
.faq-item summary {
  cursor: pointer; padding: 18px 22px; font-weight: 700; font-size: 15px;
  list-style: none; position: relative; padding-right: 48px;
}
.faq-item summary::-webkit-details-marker { display: none; }
.faq-item summary::before { content: "Q."; color: var(--accent); margin-right: 10px; font-family: var(--en); }
.faq-item summary::after {
  content: "+"; position: absolute; right: 20px; top: 50%; transform: translateY(-50%);
  font-size: 22px; color: var(--sub); transition: 0.2s;
}
.faq-item[open] summary::after { content: "−"; }
.faq-item p { padding: 0 22px 20px 22px; font-size: 14px; color: var(--sub); }

/* ---- CTA ---- */
.cta-section { background: var(--dark); color: #fff; }
.cta-text { font-size: 16px; margin-bottom: 30px; }
.cta-sub { font-size: 12.5px; opacity: 0.75; margin-top: 20px; }

/* ---- フッター ---- */
.site-footer { background: #0e0e10; color: #c9c9ce; text-align: center; padding: 40px 20px; }
.footer-brand { font-family: var(--en); font-size: 18px; font-weight: 700; color: #fff; margin-bottom: 10px; }
.footer-note { font-size: 12px; opacity: 0.7; margin-bottom: 12px; }
.copyright { font-size: 12px; opacity: 0.55; }

/* ---- 画像注記（AI生成／差し替え可能の表示） ---- */
.photo-frame { position: relative; display: block; }
.photo-note {
  position: absolute;
  right: 6px;
  bottom: 6px;
  z-index: 2;
  background: rgba(10, 8, 6, 0.62);
  color: #fff;
  font-size: 9.5px;
  line-height: 1.3;
  letter-spacing: 0.01em;
  padding: 3px 7px;
  border-radius: 3px;
  white-space: nowrap;
  pointer-events: none;
}
.hero-bg.photo-frame { position: absolute; }
.hero-bg.photo-frame .photo-note { z-index: 3; }

/* ---- フェードイン ---- */
.fade-in { opacity: 0; transform: translateY(18px); transition: opacity 0.7s ease, transform 0.7s ease; }
.fade-in.is-visible { opacity: 1; transform: none; }

/* ---- レスポンシブ ---- */
@media (max-width: 820px) {
  .reason-grid, .price-grid { grid-template-columns: 1fr; max-width: 460px; margin-left: auto; margin-right: auto; }
  .stats-inner { grid-template-columns: 1fr; gap: 24px; }
  .hero-overlay { padding: 90px 20px 100px; }
  .global-nav {
    position: fixed; top: 58px; right: 0; width: 78%; max-width: 320px;
    height: calc(100vh - 58px); background: var(--dark);
    transform: translateX(100%); transition: transform 0.3s ease; padding: 28px 24px;
  }
  .global-nav.is-open { transform: translateX(0); }
  .global-nav ul { flex-direction: column; gap: 20px; align-items: flex-start; }
  .nav-toggle { display: block; }
  .nav-toggle.is-open span:nth-child(1) { transform: translateY(7px) rotate(45deg); }
  .nav-toggle.is-open span:nth-child(2) { opacity: 0; }
  .nav-toggle.is-open span:nth-child(3) { transform: translateY(-7px) rotate(-45deg); }
  .voice-card { padding: 26px 24px; }
  .section { padding: 58px 0; }
}