:root {
  --bg: #f7efe3;
  --bg-accent: #fff8f0;
  --surface: rgba(255, 252, 247, 0.92);
  --surface-strong: #fffdf9;
  --text: #2e241d;
  --muted: #6c5a4d;
  --line: rgba(92, 68, 49, 0.14);
  --primary: #cc5a2f;
  --primary-dark: #913b1e;
  --shadow: 0 20px 50px rgba(112, 68, 24, 0.14);
  --radius-lg: 28px;
  --radius-md: 18px;
  --content-width: 1100px;
}

* {
  box-sizing: border-box;
}

body {
  margin: 0;
  color: var(--text);
  font-family: "Avenir Next", "Hiragino Sans", "Yu Gothic", "BIZ UDPGothic", sans-serif;
  line-height: 1.75;
  background:
    radial-gradient(circle at top left, rgba(255, 183, 77, 0.3), transparent 30%),
    radial-gradient(circle at top right, rgba(255, 138, 101, 0.22), transparent 28%),
    linear-gradient(180deg, #fff9f1 0%, #f7efe3 42%, #f4eadb 100%);
}

a {
  color: var(--primary-dark);
  text-decoration-thickness: 2px;
  text-underline-offset: 0.18em;
}

a:hover {
  color: var(--primary);
}

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

.page {
  width: min(calc(100% - 32px), var(--content-width));
  margin: 0 auto;
  padding: 24px 0 56px;
}

.hero {
  overflow: hidden;
  border-radius: calc(var(--radius-lg) + 6px);
  background: var(--surface-strong);
  box-shadow: var(--shadow);
}

.hero img {
  width: 100%;
  height: auto;
}

.hero-copy {
  padding: 28px clamp(20px, 4vw, 42px) 34px;
  background:
    linear-gradient(135deg, rgba(255, 243, 229, 0.95), rgba(255, 251, 245, 0.98)),
    var(--surface-strong);
}

.eyebrow {
  display: inline-block;
  margin-bottom: 12px;
  padding: 6px 12px;
  border-radius: 999px;
  background: rgba(204, 90, 47, 0.1);
  color: var(--primary-dark);
  font-size: 0.82rem;
  font-weight: 700;
  letter-spacing: 0.08em;
}

h1,
h2,
h3,
h4,
p {
  margin-top: 0;
}

h1 {
  margin-bottom: 12px;
  font-size: clamp(2rem, 5vw, 3.7rem);
  line-height: 1.08;
  letter-spacing: 0.04em;
}

.lead {
  max-width: 52rem;
  margin-bottom: 0;
  color: var(--muted);
  font-size: clamp(1rem, 2.2vw, 1.15rem);
}

.content {
  display: grid;
  gap: 22px;
  margin-top: 24px;
}

.card {
  padding: clamp(22px, 3.2vw, 32px);
  border: 1px solid var(--line);
  border-radius: var(--radius-lg);
  background: var(--surface);
  box-shadow: var(--shadow);
  backdrop-filter: blur(8px);
}

.section-title {
  margin-bottom: 16px;
  font-size: clamp(1.5rem, 3vw, 2rem);
  line-height: 1.2;
}

.subhead {
  margin-bottom: 12px;
  font-size: 1.15rem;
}

.video-frame {
  overflow: hidden;
  margin: 18px 0 22px;
  border-radius: 22px;
  background: #111;
  box-shadow: 0 18px 38px rgba(0, 0, 0, 0.18);
  aspect-ratio: 16 / 9;
}

.video-frame iframe {
  width: 100%;
  height: 100%;
  border: 0;
}

.grid-2 {
  display: grid;
  grid-template-columns: 1.1fr 0.9fr;
  gap: 24px;
  align-items: start;
}

.info-block {
  padding: 18px 20px;
  border-radius: var(--radius-md);
  background: rgba(255, 255, 255, 0.65);
  border: 1px solid rgba(92, 68, 49, 0.09);
}

.button {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  min-height: 48px;
  padding: 0 20px;
  border-radius: 999px;
  background: linear-gradient(135deg, var(--primary), #df7a40);
  color: #fff;
  font-weight: 700;
  text-decoration: none;
  box-shadow: 0 14px 28px rgba(204, 90, 47, 0.26);
}

.button:hover {
  color: #fff;
  filter: brightness(1.04);
}

.book {
  display: grid;
  grid-template-columns: minmax(220px, 320px) 1fr;
  gap: 24px;
  align-items: start;
}

.book-cover {
  overflow: hidden;
  border-radius: 24px;
  background: #fff;
  box-shadow: 0 18px 40px rgba(82, 49, 17, 0.16);
}

.price {
  margin-bottom: 16px;
  color: var(--primary-dark);
  font-size: 1.15rem;
  font-weight: 700;
}

.song-list {
  columns: 2;
  column-gap: 24px;
  padding-left: 1.2em;
  margin: 18px 0 0;
}

.song-list li {
  margin-bottom: 0.45em;
  break-inside: avoid;
}

.photo-links {
  display: grid;
  gap: 14px;
  margin-top: 18px;
}

.photo-item {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  justify-content: space-between;
  gap: 10px 18px;
  padding: 16px 18px;
  border-radius: var(--radius-md);
  background: rgba(255, 255, 255, 0.72);
  border: 1px solid rgba(92, 68, 49, 0.1);
}

.photo-item strong {
  font-size: 1rem;
}

.footer-note {
  margin-top: 18px;
  color: var(--muted);
  font-size: 0.95rem;
}

@media (max-width: 900px) {
  .grid-2,
  .book {
    grid-template-columns: 1fr;
  }

  .song-list {
    columns: 1;
  }
}

@media (max-width: 640px) {
  .page {
    width: min(calc(100% - 20px), var(--content-width));
    padding-top: 14px;
    padding-bottom: 40px;
  }

  .hero-copy,
  .card {
    padding-left: 18px;
    padding-right: 18px;
  }

  .photo-item {
    align-items: flex-start;
  }

  .button {
    width: 100%;
  }
}