/* ============================================================
   GOLD'S GYM 南船橋千葉店 スタジオLP - スタイルシート
   ============================================================ */

/* ---- カラー変数 ---- */
:root {
  --black:       #111111;
  --dark:        #1a1a1a;
  --dark-2:      #222222;
  --yellow:      #f5c400;
  --yellow-dark: #d4a800;
  --white:       #ffffff;
  --gray-light:  #f4f4f2;
  --gray:        #888888;
  --gray-text:   #cccccc;
  --red:         #cc2200;
  --green:       #2d7d46;
  --blue:        #1a4fa0;
  --purple:      #6b3fa0;
  --orange:      #c05a00;

  --radius:      8px;
  --radius-lg:   16px;
  --shadow:      0 4px 20px rgba(0,0,0,.15);
  --shadow-lg:   0 8px 40px rgba(0,0,0,.25);

  --max-w:       1100px;
  --section-pad: 80px 24px;
}

/* ---- リセット ---- */
*, *::before, *::after { box-sizing: border-box; margin: 0; padding: 0; }
html { scroll-behavior: smooth; font-size: 16px; }
body {
  font-family: 'Noto Sans JP', 'Hiragino Kaku Gothic ProN', 'Yu Gothic', sans-serif;
  background: var(--white);
  color: var(--black);
  line-height: 1.7;
  -webkit-font-smoothing: antialiased;
}
img { max-width: 100%; height: auto; display: block; }
a { color: inherit; text-decoration: none; }
button { cursor: pointer; border: none; background: none; font: inherit; }

/* ---- ユーティリティ ---- */
.container { max-width: var(--max-w); margin: 0 auto; padding: 0 20px; }
.text-white { color: var(--white) !important; }
.text-gray  { color: var(--gray-text); }
.text-center { text-align: center; }
.sp-only { display: inline; }
.pc-only { display: none; }

/* ============================================================
   HEADER
   ============================================================ */
.site-header {
  position: fixed;
  top: 0; left: 0; right: 0;
  z-index: 1000;
  background: rgba(17,17,17,.95);
  backdrop-filter: blur(8px);
  border-bottom: 2px solid var(--yellow);
}
.header-inner {
  max-width: var(--max-w);
  margin: 0 auto;
  padding: 0 20px;
  height: 60px;
  display: flex;
  align-items: center;
  justify-content: space-between;
}
.site-logo {
  height: 36px;
  width: auto;
  object-fit: contain;
}
.header-nav {
  display: flex;
  align-items: center;
  gap: 16px;
}
.nav-link {
  color: var(--white);
  font-size: .85rem;
  font-weight: 500;
  display: none;
}

/* ============================================================
   ボタン共通
   ============================================================ */
.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 8px;
  font-weight: 700;
  border-radius: var(--radius);
  transition: transform .15s, box-shadow .15s, opacity .15s;
  text-align: center;
  letter-spacing: .04em;
  line-height: 1.3;
}
.btn:hover { transform: translateY(-2px); box-shadow: var(--shadow-lg); }
.btn:active { transform: translateY(0); }

.btn-sm  { padding: 8px 16px; font-size: .8rem; }
.btn-lg  { padding: 16px 28px; font-size: 1rem; }
.btn-xl  { padding: 20px 40px; font-size: 1.1rem; }
.btn-floating { padding: 16px 24px; font-size: 1rem; width: 100%; }

.btn-primary {
  background: var(--yellow);
  color: var(--black);
}
.btn-outline {
  background: transparent;
  color: var(--yellow);
  border: 2px solid var(--yellow);
}
.btn-outline:hover { background: rgba(245,196,0,.1); }
.btn-outline-white {
  background: transparent;
  color: var(--white);
  border: 2px solid var(--white);
}
.btn-outline-white:hover { background: rgba(255,255,255,.1); }
.btn-yellow {
  background: var(--yellow);
  color: var(--black);
}
.btn-dark {
  background: var(--black);
  color: var(--white);
}

/* ============================================================
   CTA グループ
   ============================================================ */
.cta-group {
  display: flex;
  flex-direction: column;
  gap: 12px;
  margin-top: 32px;
}
.cta-group-center { align-items: center; }
.cta-center {
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 16px;
  margin-top: 48px;
}

/* ============================================================
   SECTION 共通
   ============================================================ */
.section { padding: var(--section-pad); }
.section-dark { background: var(--dark); }
.section-light { background: var(--gray-light); }
.section-yellow { background: var(--yellow); }

.section-label {
  display: inline-block;
  font-size: .75rem;
  font-weight: 700;
  letter-spacing: .12em;
  text-transform: uppercase;
  color: var(--yellow);
  border: 1px solid var(--yellow);
  padding: 4px 12px;
  border-radius: 100px;
  margin-bottom: 16px;
}
.label-yellow { color: var(--yellow); border-color: var(--yellow); }

.section-title {
  font-size: clamp(1.4rem, 4vw, 2rem);
  font-weight: 900;
  line-height: 1.4;
  margin-bottom: 32px;
  letter-spacing: -.01em;
}
.section-lead {
  font-size: 1rem;
  color: var(--gray);
  margin-bottom: 40px;
  margin-top: -20px;
}
.section-sub {
  font-size: .8rem;
  color: var(--gray);
  margin-bottom: 32px;
  margin-top: -20px;
}

/* ============================================================
   HERO
   ============================================================ */
.hero {
  position: relative;
  min-height: 100svh;
  display: flex;
  align-items: flex-end;
  padding-top: 60px;
  overflow: hidden;
}
.hero-bg {
  position: absolute;
  inset: 0;
}
/* ヒーロー画像: src を実際のスタジオレッスン写真に差し替えてください */
.hero-img {
  width: 100%;
  height: 100%;
  object-fit: cover;
  object-position: center top;
}
.hero-overlay {
  position: absolute;
  inset: 0;
  background: linear-gradient(
    to bottom,
    rgba(0,0,0,.2) 0%,
    rgba(0,0,0,.4) 40%,
    rgba(0,0,0,.85) 100%
  );
}
.hero-content {
  position: relative;
  z-index: 1;
  padding-bottom: 60px;
  padding-top: 40px;
}
.hero-eyebrow {
  font-size: .75rem;
  letter-spacing: .15em;
  text-transform: uppercase;
  color: var(--yellow);
  font-weight: 700;
  margin-bottom: 16px;
}
.hero-title {
  font-size: clamp(1.8rem, 6vw, 3rem);
  font-weight: 900;
  color: var(--white);
  line-height: 1.35;
  margin-bottom: 24px;
  letter-spacing: -.02em;
}
.hero-sub {
  font-size: 1rem;
  color: rgba(255,255,255,.9);
  margin-bottom: 20px;
  line-height: 1.9;
}
.hero-body {
  font-size: .9rem;
  color: rgba(255,255,255,.75);
  margin-bottom: 28px;
  line-height: 1.85;
}
.hero-price-badge {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  background: rgba(245,196,0,.15);
  border: 1px solid var(--yellow);
  border-radius: var(--radius);
  padding: 12px 20px;
  margin-bottom: 28px;
  flex-wrap: wrap;
}
.price-original { color: rgba(255,255,255,.55); font-size: .85rem; text-decoration: line-through; }
.price-arrow { color: var(--yellow); font-weight: 700; }
.price-campaign { color: var(--yellow); font-size: 1.6rem; font-weight: 900; }
.price-label { color: rgba(255,255,255,.7); font-size: .8rem; }

/* ============================================================
   EMPATHY
   ============================================================ */
.empathy-list {
  list-style: none;
  display: grid;
  gap: 12px;
  margin-bottom: 40px;
}
.empathy-item {
  display: flex;
  align-items: flex-start;
  gap: 14px;
  background: var(--gray-light);
  border-radius: var(--radius);
  padding: 16px 20px;
  font-size: .95rem;
  border-left: 4px solid var(--yellow);
  animation: fadeInUp .5s ease both;
}
.empathy-item:nth-child(1) { animation-delay: .05s; }
.empathy-item:nth-child(2) { animation-delay: .1s; }
.empathy-item:nth-child(3) { animation-delay: .15s; }
.empathy-item:nth-child(4) { animation-delay: .2s; }
.empathy-item:nth-child(5) { animation-delay: .25s; }
.empathy-item:nth-child(6) { animation-delay: .3s; }
.empathy-item:nth-child(7) { animation-delay: .35s; }
.empathy-icon { font-size: 1.4rem; flex-shrink: 0; }
.empathy-message {
  text-align: center;
  font-size: 1.05rem;
  line-height: 1.8;
  padding: 32px 24px;
  background: var(--black);
  color: var(--white);
  border-radius: var(--radius-lg);
}
.empathy-message strong { color: var(--yellow); }

/* ============================================================
   VALUE CARDS
   ============================================================ */
.value-cards {
  display: grid;
  gap: 20px;
}
.value-card {
  background: var(--dark-2);
  border: 1px solid rgba(245,196,0,.2);
  border-radius: var(--radius-lg);
  padding: 28px 24px;
  transition: border-color .2s, transform .2s;
}
.value-card:hover {
  border-color: var(--yellow);
  transform: translateY(-4px);
}
.value-icon { font-size: 2rem; margin-bottom: 12px; }
.value-card-title {
  font-size: 1.1rem;
  font-weight: 700;
  color: var(--yellow);
  margin-bottom: 10px;
}
.value-card-text { font-size: .9rem; color: var(--gray-text); line-height: 1.8; }

/* ============================================================
   EXPERIENCE
   ============================================================ */
.experience-visual {
  border-radius: var(--radius-lg);
  overflow: hidden;
  margin-bottom: 36px;
  max-height: 400px;
}
/* 体験価値写真: src をインストラクター案内写真に差し替えてください */
.experience-img {
  width: 100%;
  height: 300px;
  object-fit: cover;
}
.experience-points { display: grid; gap: 24px; }
.exp-point {
  display: flex;
  gap: 16px;
  align-items: flex-start;
}
.exp-check {
  width: 36px;
  height: 36px;
  background: var(--yellow);
  color: var(--black);
  border-radius: 50%;
  display: flex;
  align-items: center;
  justify-content: center;
  font-weight: 900;
  font-size: 1rem;
  flex-shrink: 0;
}
.exp-point h3 { font-size: 1rem; font-weight: 700; margin-bottom: 6px; }
.exp-point p  { font-size: .9rem; color: var(--gray); line-height: 1.7; }

/* ============================================================
   LIFESTYLE
   ============================================================ */
.lifestyle-grid {
  display: grid;
  gap: 16px;
}
.lifestyle-item {
  display: flex;
  align-items: center;
  gap: 20px;
  padding: 20px 24px;
  background: var(--white);
  border-radius: var(--radius);
  box-shadow: var(--shadow);
}
.lifestyle-num {
  font-size: 2rem;
  font-weight: 900;
  color: var(--yellow);
  font-variant-numeric: tabular-nums;
  flex-shrink: 0;
  width: 52px;
  line-height: 1;
}
.lifestyle-item p { font-size: .95rem; line-height: 1.6; }
.lifestyle-item strong { color: var(--black); font-weight: 700; }

/* ============================================================
   LESSON CARDS
   ============================================================ */
.lesson-cards {
  display: grid;
  gap: 20px;
  margin-bottom: 8px;
}
.lesson-card {
  background: var(--dark-2);
  border: 1px solid rgba(255,255,255,.08);
  border-radius: var(--radius-lg);
  padding: 24px 20px;
  transition: border-color .2s;
}
.lesson-card:hover { border-color: rgba(245,196,0,.4); }
.lesson-tag {
  display: inline-block;
  font-size: .72rem;
  font-weight: 700;
  letter-spacing: .05em;
  background: var(--yellow);
  color: var(--black);
  padding: 3px 10px;
  border-radius: 100px;
  margin-bottom: 10px;
}
.tag-red    { background: var(--red); color: var(--white); }
.tag-purple { background: var(--purple); color: var(--white); }
.tag-green  { background: var(--green); color: var(--white); }
.tag-orange { background: var(--orange); color: var(--white); }
.tag-blue   { background: var(--blue); color: var(--white); }

.lesson-name { font-size: 1.1rem; font-weight: 700; color: var(--white); margin-bottom: 10px; }
.lesson-for  { font-size: .82rem; color: rgba(255,255,255,.5); margin-bottom: 8px; }
.lesson-desc { font-size: .88rem; color: var(--gray-text); line-height: 1.75; margin-bottom: 12px; }
.lesson-mood { font-size: .82rem; color: var(--yellow); font-weight: 500; }

/* ============================================================
   STORIES
   ============================================================ */
.story-cards { display: grid; gap: 32px; }
.story-card {
  background: var(--white);
  border-radius: var(--radius-lg);
  overflow: hidden;
  box-shadow: var(--shadow);
  border: 1px solid rgba(0,0,0,.06);
}
.story-photo {
  width: 100%;
  height: 220px;
  overflow: hidden;
  background: var(--gray-light);
}
/* 参加者写真: src をモデルケース写真に差し替えてください */
.story-photo img {
  width: 100%;
  height: 100%;
  object-fit: cover;
  object-position: center top;
}
.story-content { padding: 24px 20px; }
.story-profile {
  font-size: .8rem;
  font-weight: 700;
  letter-spacing: .06em;
  color: var(--yellow-dark);
  background: rgba(245,196,0,.1);
  border: 1px solid rgba(245,196,0,.3);
  display: inline-block;
  padding: 3px 12px;
  border-radius: 100px;
  margin-bottom: 16px;
}
.story-label {
  display: block;
  font-size: .72rem;
  font-weight: 700;
  letter-spacing: .06em;
  text-transform: uppercase;
  color: var(--gray);
  margin-bottom: 4px;
}
.story-before, .story-trigger, .story-after {
  margin-bottom: 12px;
  font-size: .88rem;
  line-height: 1.7;
}
.story-quote {
  margin-top: 16px;
  padding: 14px 18px;
  background: var(--gray-light);
  border-left: 4px solid var(--yellow);
  border-radius: 0 var(--radius) var(--radius) 0;
  font-size: .92rem;
  font-style: italic;
  color: var(--dark);
  font-weight: 500;
}

/* ============================================================
   CTA MID (黄色帯)
   ============================================================ */
.cta-mid { padding: 60px 24px; }
.cta-mid-title {
  font-size: clamp(1.3rem, 4vw, 1.8rem);
  font-weight: 900;
  color: var(--black);
  margin-bottom: 20px;
  line-height: 1.4;
}
.cta-price-badge {
  display: flex;
  align-items: baseline;
  justify-content: center;
  gap: 8px;
  margin-bottom: 28px;
  flex-wrap: wrap;
}
.price-original-sm { font-size: .85rem; text-decoration: line-through; color: rgba(0,0,0,.4); }
.price-campaign-lg { font-size: 2.2rem; font-weight: 900; color: var(--black); }
.price-label-sm { font-size: .8rem; color: rgba(0,0,0,.55); }

/* ============================================================
   SAFETY
   ============================================================ */
.safety-visual {
  border-radius: var(--radius-lg);
  overflow: hidden;
  margin-bottom: 40px;
  max-height: 320px;
}
/* 安心材料写真: src を参加者写真に差し替えてください */
.safety-img {
  width: 100%;
  height: 260px;
  object-fit: cover;
}
.safety-list {
  display: grid;
  gap: 16px;
}
.safety-item {
  display: flex;
  gap: 16px;
  align-items: flex-start;
  padding: 20px;
  background: var(--white);
  border-radius: var(--radius);
  box-shadow: var(--shadow);
}
.safety-icon { font-size: 1.8rem; flex-shrink: 0; }
.safety-item h3 { font-size: .95rem; font-weight: 700; margin-bottom: 4px; }
.safety-item p  { font-size: .85rem; color: var(--gray); line-height: 1.65; }

/* ============================================================
   HOW TO (STEPS)
   ============================================================ */
.steps { display: grid; gap: 40px; margin-bottom: 8px; }
.step {}
.step-num {
  font-size: .7rem;
  font-weight: 900;
  letter-spacing: .12em;
  color: var(--yellow);
  border: 1px solid var(--yellow);
  display: inline-block;
  padding: 4px 14px;
  border-radius: 100px;
  margin-bottom: 16px;
}
.step-content {
  background: var(--dark-2);
  border-radius: var(--radius-lg);
  overflow: hidden;
  border: 1px solid rgba(255,255,255,.06);
}
.step-photo {
  width: 100%;
  height: 200px;
  overflow: hidden;
  background: var(--dark);
  position: relative;
}
/* STEP写真: 各stepの src をあとで差し替えてください (コメント参照) */
.step-photo img {
  width: 100%;
  height: 100%;
  object-fit: cover;
  opacity: .75;
}
.step-photo-note {
  position: absolute;
  bottom: 8px;
  left: 12px;
  font-size: .65rem;
  color: rgba(255,255,255,.5);
  background: rgba(0,0,0,.5);
  padding: 2px 8px;
  border-radius: 4px;
}
.step-text { padding: 24px 20px; }
.step-text h3 { font-size: 1rem; font-weight: 700; color: var(--white); margin-bottom: 8px; }
.step-text p  { font-size: .88rem; color: var(--gray-text); line-height: 1.75; }

/* ============================================================
   FAQ
   ============================================================ */
.faq-list { display: grid; gap: 2px; }
.faq-item { border-bottom: 1px solid rgba(0,0,0,.08); }
.faq-question {
  width: 100%;
  display: flex;
  justify-content: space-between;
  align-items: center;
  gap: 12px;
  padding: 20px 0;
  font-size: .95rem;
  font-weight: 500;
  text-align: left;
  color: var(--black);
  transition: color .15s;
}
.faq-question:hover { color: var(--yellow-dark); }
.faq-question[aria-expanded="true"] { color: var(--yellow-dark); font-weight: 700; }
.faq-question[aria-expanded="true"] .faq-icon { transform: rotate(45deg); color: var(--yellow-dark); }
.faq-icon {
  font-size: 1.4rem;
  flex-shrink: 0;
  transition: transform .25s;
  color: var(--yellow);
}
.faq-answer {
  padding-bottom: 20px;
  font-size: .9rem;
  line-height: 1.8;
  color: var(--gray);
}
.faq-answer[hidden] { display: none; }

/* ============================================================
   FINAL CTA
   ============================================================ */
.final-cta-body {
  font-size: .95rem;
  line-height: 2;
  margin-bottom: 32px;
}
.final-cta-visual {
  border-radius: var(--radius-lg);
  overflow: hidden;
  margin-bottom: 40px;
  max-height: 320px;
}
/* 最終CTA写真: src をレッスン後達成感写真に差し替えてください */
.final-cta-visual img {
  width: 100%;
  height: 260px;
  object-fit: cover;
}
.final-price-block {
  text-align: center;
  margin-bottom: 32px;
}
.final-price-text {
  font-size: .8rem;
  letter-spacing: .1em;
  color: var(--gray-text);
  margin-bottom: 8px;
}
.final-price-row {
  display: flex;
  align-items: baseline;
  justify-content: center;
  gap: 12px;
  flex-wrap: wrap;
}
.price-strike { text-decoration: line-through; color: var(--gray); font-size: .9rem; }
.final-price-big { font-size: 3rem; font-weight: 900; color: var(--yellow); line-height: 1; }
.final-price-tax { font-size: .8rem; color: var(--gray); }

/* ============================================================
   FOOTER
   ============================================================ */
.site-footer {
  background: #0a0a0a;
  border-top: 1px solid rgba(255,255,255,.06);
  padding: 48px 24px 120px;
  text-align: center;
}
.footer-logo {
  height: 32px;
  width: auto;
  object-fit: contain;
  margin: 0 auto 20px;
  opacity: .7;
}
.footer-info {
  font-size: .82rem;
  color: rgba(255,255,255,.45);
  line-height: 1.8;
  margin-bottom: 20px;
}
.footer-info strong { color: rgba(255,255,255,.7); }
.footer-nav {
  display: flex;
  flex-wrap: wrap;
  justify-content: center;
  gap: 4px 20px;
  margin-bottom: 24px;
}
.footer-nav a {
  font-size: .8rem;
  color: rgba(255,255,255,.45);
  transition: color .15s;
}
.footer-nav a:hover { color: var(--yellow); }
.footer-copy {
  font-size: .72rem;
  color: rgba(255,255,255,.25);
}

/* ============================================================
   FLOATING CTA (モバイル用)
   ============================================================ */
.floating-cta {
  position: fixed;
  bottom: 0; left: 0; right: 0;
  z-index: 900;
  padding: 12px 16px;
  background: rgba(17,17,17,.95);
  backdrop-filter: blur(8px);
  border-top: 1px solid rgba(245,196,0,.3);
  transform: translateY(100%);
  transition: transform .3s ease;
}
.floating-cta.visible { transform: translateY(0); }

/* ============================================================
   ANIMATIONS
   ============================================================ */
@keyframes fadeInUp {
  from { opacity: 0; transform: translateY(20px); }
  to   { opacity: 1; transform: translateY(0); }
}
.reveal {
  opacity: 0;
  transform: translateY(30px);
  transition: opacity .6s ease, transform .6s ease;
}
.reveal.visible {
  opacity: 1;
  transform: translateY(0);
}

/* ============================================================
   RESPONSIVE — TABLET (600px+)
   ============================================================ */
@media (min-width: 600px) {
  .value-cards  { grid-template-columns: 1fr 1fr; }
  .lesson-cards { grid-template-columns: 1fr 1fr; }
  .safety-list  { grid-template-columns: 1fr 1fr; }
  .story-cards  { grid-template-columns: 1fr 1fr; }
  .lifestyle-grid { grid-template-columns: 1fr 1fr; }

  .cta-group { flex-direction: row; flex-wrap: wrap; }

  .step-content {
    display: grid;
    grid-template-columns: 240px 1fr;
  }
  .step-photo { height: 100%; min-height: 180px; }
}

/* ============================================================
   RESPONSIVE — PC (900px+)
   ============================================================ */
@media (min-width: 900px) {
  :root { --section-pad: 100px 40px; }

  .sp-only { display: none; }
  .pc-only { display: inline; }

  .nav-link { display: inline; }

  .hero-title { font-size: 3.2rem; }
  .hero-content { padding-bottom: 80px; }

  .value-cards  { grid-template-columns: repeat(4, 1fr); }
  .lesson-cards { grid-template-columns: repeat(3, 1fr); }
  .safety-list  { grid-template-columns: repeat(3, 1fr); }
  .story-cards  { grid-template-columns: repeat(3, 1fr); }
  .lifestyle-grid { grid-template-columns: repeat(5, 1fr); }

  .steps { grid-template-columns: 1fr 1fr; gap: 32px; }
  .step-content {
    display: block;
  }
  .step-photo { height: 220px; }

  .empathy-list { grid-template-columns: 1fr 1fr; }

  .experience-img { height: 420px; }

  .cta-group { flex-direction: row; }

  .floating-cta { display: none; }
}

/* ============================================================
   REDUCED MOTION
   ============================================================ */
@media (prefers-reduced-motion: reduce) {
  *, *::before, *::after {
    animation-duration: .01ms !important;
    transition-duration: .01ms !important;
  }
}