:root {
  --bg: #f4f8fb;
  --surface: #ffffff;
  --surface-soft: #eef4f8;
  --text: #1e2a33;
  --muted: #5c6f7f;
  --line: #d5e1ea;
  --primary: #0e5a8a;
  --primary-dark: #0a4266;
  --accent: #5ea6c7;
  --shadow: 0 10px 30px rgba(13, 38, 58, 0.1);
}

* {
  box-sizing: border-box;
}

html,
body {
  margin: 0;
  padding: 0;
  color: var(--text);
  background: var(--bg);
  font-family: "Hiragino Kaku Gothic ProN", "Yu Gothic", "Meiryo", sans-serif;
  line-height: 1.85;
}

a {
  color: inherit;
}

.container {
  width: min(1120px, 92%);
  margin: 0 auto;
}

.hero {
  position: relative;
  min-height: 82vh;
  display: flex;
  align-items: center;
  overflow: hidden;
  color: #ffffff;
}

.hero-bg {
  position: absolute;
  inset: 0;
}

.hero-slide {
  position: absolute;
  inset: 0;
  width: 100%;
  height: 100%;
  object-fit: cover;
  opacity: 0;
  transition: opacity 1.3s ease;
}

.hero-slide.is-active {
  opacity: 1;
}

.hero-overlay {
  position: absolute;
  inset: 0;
  background: linear-gradient(120deg, rgba(7, 30, 47, 0.75), rgba(7, 30, 47, 0.45));
}

.hero-content {
  position: relative;
  z-index: 2;
  padding: 96px 0;
}

.eyebrow {
  font-size: 0.95rem;
  letter-spacing: 0.08em;
  margin-bottom: 10px;
  opacity: 0.95;
}

h1,
h2 {
  line-height: 1.35;
  margin: 0 0 16px;
}

h1 {
  font-size: clamp(2rem, 4vw, 3.25rem);
}

h2 {
  font-size: clamp(1.5rem, 2.8vw, 2.1rem);
}

.section-heading {
  display: block;
  margin: 0 0 16px;
}

.section-heading h2 {
  margin: 0;
}

.bubble-talk {
  display: flex;
  align-items: flex-start;
  gap: 10px;
  margin-bottom: 14px;
}

.bubble-avatar {
  width: 100px;
  height: 100px;
  border-radius: 999px;
  object-fit: contain;
  object-position: center center;
  border: 2px solid #c9dcea;
  background: #ffffff;
  padding: 2px;
  box-shadow: 0 6px 18px rgba(13, 38, 58, 0.14);
  flex: 0 0 auto;
}

.lead {
  font-size: clamp(1.05rem, 2vw, 1.3rem);
  margin-bottom: 12px;
}

.section {
  padding: 82px 0;
}

.section-soft {
  background: var(--surface-soft);
}

.section-price,
.section-cta {
  background: var(--surface);
}

p {
  margin: 0 0 12px;
}

ul {
  margin: 10px 0 16px;
  padding-left: 1.2rem;
}

li {
  margin-bottom: 6px;
}

.btn {
  display: inline-block;
  margin-top: 18px;
  padding: 14px 24px;
  text-decoration: none;
  border-radius: 999px;
  font-weight: 700;
}

.btn-primary {
  background: var(--primary);
  color: #fff;
  box-shadow: var(--shadow);
}

.btn-primary:hover,
.btn-primary:focus-visible {
  background: var(--primary-dark);
}

.samantha-card {
  display: grid;
  grid-template-columns: 240px 1fr;
  gap: 28px;
  align-items: start;
}

.samantha-img,
.diagram-img {
  width: 100%;
  border-radius: 14px;
  border: 1px solid var(--line);
  background: #fff;
}

.bubble {
  display: inline-block;
  margin-bottom: 0;
  padding: 10px 14px;
  border: 1px solid #b9d0df;
  border-radius: 12px;
  background: #f7fbff;
  color: #23445f;
}

.note {
  color: var(--muted);
  font-size: 0.95rem;
}

.two-col {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 32px;
  align-items: center;
}

.bullet-box {
  background: var(--surface);
  border: 1px solid var(--line);
  border-radius: 14px;
  padding: 22px;
}

.reviewer-name {
  font-size: 1.3rem;
  font-weight: 700;
  margin-bottom: 4px;
}

.youtube-wrap {
  border: 1px solid var(--line);
  border-radius: 16px;
  overflow: hidden;
  background: #dfe9f1;
  min-height: 300px;
}

.youtube-placeholder {
  min-height: 300px;
  display: grid;
  place-items: center;
  text-align: center;
  color: var(--muted);
  padding: 24px;
}

.youtube-wrap iframe {
  width: 100%;
  min-height: 420px;
  border: 0;
  display: block;
}

.audio-player {
  width: 100%;
  max-width: 640px;
  margin-bottom: 8px;
}

.price-label {
  font-size: 1.05rem;
  color: var(--muted);
}

.price-value {
  font-size: clamp(2rem, 5vw, 3rem);
  font-weight: 800;
  line-height: 1.2;
  color: var(--primary-dark);
}

.notice-strong {
  padding: 16px;
  border-left: 4px solid var(--accent);
  background: #eef7fc;
}

.faq-list details {
  border: 1px solid var(--line);
  border-radius: 10px;
  padding: 12px 14px;
  background: var(--surface);
  margin-bottom: 12px;
}

.faq-list summary {
  cursor: pointer;
  font-weight: 700;
}

.fixed-cta {
  position: fixed;
  right: 14px;
  bottom: 14px;
  z-index: 50;
  background: var(--primary);
  color: #fff;
  text-decoration: none;
  padding: 10px 14px;
  border-radius: 999px;
  font-size: 0.9rem;
  box-shadow: var(--shadow);
}

.fixed-cta:hover,
.fixed-cta:focus-visible {
  background: var(--primary-dark);
}

@media (max-width: 860px) {
  .section {
    padding: 64px 0;
  }

  .samantha-card,
  .two-col {
    grid-template-columns: 1fr;
  }

  .samantha-img {
    max-width: 260px;
  }

  .hero {
    min-height: 75vh;
  }

  .hero-content {
    padding: 80px 0;
  }

  .bubble-avatar {
    width: 90px;
    height: 90px;
  }

  .youtube-wrap iframe,
  .youtube-placeholder {
    min-height: 240px;
  }
}

@media (prefers-reduced-motion: reduce) {
  * {
    animation-duration: 0.01ms !important;
    animation-iteration-count: 1 !important;
    transition-duration: 0.01ms !important;
    scroll-behavior: auto !important;
  }
}