/* ============================================================
   吹場鳴蔵 公式サイト — 共有デザインシステム
   v2026.05.06
   target: HP / shinobue / ryuteki / sizes / support
   (LP /start/ は使用しない - 既存ページとして独立)
   ============================================================ */

:root {
  /* surface */
  --color-bg: #faf8f3;
  --color-surface: #ffffff;
  --color-surface-2: #f3eee2;
  --color-border: #e8e1d0;
  --color-border-soft: #f0ead9;

  /* text */
  --color-text: #111111;
  --color-text-secondary: #4a4a4a;
  --color-text-muted: #767065;

  /* accent (篠笛/メイン系) */
  --color-accent: #c2410c;
  --color-accent-dark: #7c2d12;
  --color-accent-soft: #fdf3eb;

  /* shinobue tone (祭/お囃子/温かい) */
  --color-shinobue-tint: #f5e8c8;
  --color-shinobue-deep: #6b4423;

  /* ryuteki tone (雅楽/夜/凛) */
  --color-ryuteki-deep: #1c1d3a;
  --color-ryuteki-deeper: #0e0f23;
  --color-ryuteki-gold: #c9a56a;
  --color-ryuteki-gold-soft: #e8d6a8;

  /* radius / shadow / motion */
  --radius-card: 24px;
  --radius-card-large: 32px;
  --radius-button: 999px;
  --shadow-card: 0 8px 32px rgba(20, 12, 0, 0.08);
  --shadow-card-hover: 0 16px 48px rgba(20, 12, 0, 0.14);
  --transition: 220ms cubic-bezier(0.2, 0, 0, 1);

  /* layout */
  --max-w: 1200px;
  --gutter: clamp(20px, 4vw, 40px);
  --section-gap: clamp(72px, 11vw, 140px);
}

/* base */
* { box-sizing: border-box; margin: 0; padding: 0; }
html { -webkit-text-size-adjust: 100%; scroll-behavior: smooth; }
body {
  font-family: -apple-system, BlinkMacSystemFont, "Hiragino Sans", "Hiragino Kaku Gothic ProN",
               "Yu Gothic UI", "Yu Gothic", "Noto Sans JP", "Meiryo", sans-serif;
  font-size: 17px;
  line-height: 1.7;
  color: var(--color-text);
  background: var(--color-bg);
  -webkit-font-smoothing: antialiased;
  text-rendering: optimizeLegibility;
}
@media (min-width: 720px) { body { font-size: 18px; } }
img, svg { display: block; max-width: 100%; height: auto; }
a { color: inherit; text-decoration: none; }

/* typography */
h1, h2, h3, h4 {
  letter-spacing: -0.01em;
  line-height: 1.25;
  font-weight: 800;
  color: var(--color-text);
}
.t-eyebrow {
  font-size: 0.85rem;
  letter-spacing: 0.18em;
  font-weight: 700;
  color: var(--color-accent);
  text-transform: uppercase;
  margin-bottom: 14px;
}
.t-display {
  font-size: clamp(2.4rem, 6vw, 4.2rem);
  font-weight: 800;
  line-height: 1.1;
  letter-spacing: -0.02em;
}
.t-h1   { font-size: clamp(2rem, 4.5vw, 3rem); font-weight: 800; line-height: 1.18; }
.t-h2   { font-size: clamp(1.6rem, 3.5vw, 2.4rem); font-weight: 800; line-height: 1.22; }
.t-h3   { font-size: clamp(1.2rem, 2.4vw, 1.5rem); font-weight: 700; }
.t-lead { font-size: clamp(1.1rem, 2vw, 1.3rem); color: var(--color-text-secondary); line-height: 1.7; font-weight: 400; }

/* layout */
.container { max-width: var(--max-w); margin-inline: auto; padding-inline: var(--gutter); }
.section { padding-block: var(--section-gap); }
.section--tight { padding-block: clamp(40px, 6vw, 64px); }
/* page-level wrapper: only sets horizontal padding, lets .section govern vertical */
.wrap-x { padding-inline: var(--gutter); max-width: var(--max-w); margin-inline: auto; }

/* breadcrumb */
.breadcrumb {
  max-width: var(--max-w); margin: 0 auto;
  padding: 22px var(--gutter) 0;
  font-size: 0.92rem; color: var(--color-text-muted);
}
.breadcrumb a { color: var(--color-text-muted); transition: color var(--transition); }
.breadcrumb a:hover { color: var(--color-accent); }
.breadcrumb-sep { margin: 0 8px; opacity: 0.5; }

/* button */
.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 8px;
  padding: 16px 32px;
  font-size: 1rem;
  font-weight: 700;
  letter-spacing: 0.01em;
  border-radius: var(--radius-button);
  border: none;
  cursor: pointer;
  transition: transform var(--transition), background-color var(--transition), box-shadow var(--transition);
  text-decoration: none;
  line-height: 1.2;
}
.btn--primary { background: var(--color-text); color: #fff; }
.btn--primary:hover { background: var(--color-accent-dark); transform: translateY(-1px); }
.btn--accent { background: var(--color-accent); color: #fff; }
.btn--accent:hover { background: var(--color-accent-dark); transform: translateY(-1px); }
.btn--ghost {
  background: transparent;
  color: var(--color-text);
  border: 2px solid currentColor;
  padding: 14px 30px;
}
.btn--ghost:hover { background: var(--color-text); color: #fff; }
.btn--on-dark { background: #fff; color: #111; }
.btn--on-dark:hover { background: var(--color-ryuteki-gold); color: var(--color-ryuteki-deeper); transform: translateY(-1px); }
.btn--ghost-dark { background: transparent; color: #fff; border: 2px solid rgba(255,255,255,0.5); padding: 14px 30px; }
.btn--ghost-dark:hover { border-color: #fff; background: rgba(255,255,255,0.08); }
.btn--xl { padding: 20px 40px; font-size: 1.08rem; }
.btn--sm { padding: 11px 22px; font-size: 0.92rem; }

/* trust badge */
.trust-badge {
  display: inline-block;
  padding: 6px 14px;
  border: 1px solid var(--color-accent-dark);
  color: var(--color-accent-dark);
  background: rgba(255,255,255,0.6);
  border-radius: 999px;
  font-size: 0.82rem;
  font-weight: 700;
  letter-spacing: 0.06em;
}

/* hero */
.hero {
  padding-top: clamp(72px, 12vw, 140px);
  padding-bottom: clamp(48px, 8vw, 100px);
}
.hero__sub { color: var(--color-text-secondary); margin-top: 18px; max-width: 720px; }
.hero__cta-row { display: flex; flex-wrap: wrap; gap: 14px; margin-top: 36px; }

/* footer */
.site-footer {
  margin-top: var(--section-gap);
  padding: 64px 0 40px;
  background: #15110b;
  color: #d8c8a8;
}
.site-footer-inner { max-width: var(--max-w); margin: 0 auto; padding: 0 var(--gutter); }
.site-footer h3 { font-size: 0.86rem; letter-spacing: 0.2em; color: #b8a980; text-transform: uppercase; margin-bottom: 14px; font-weight: 700; }
.site-footer__grid { display: grid; grid-template-columns: 1fr; gap: 36px; padding-bottom: 36px; border-bottom: 1px solid #2c2317; }
@media (min-width: 720px) { .site-footer__grid { grid-template-columns: 1.4fr 1fr 1fr; } }
.site-footer__brand .footer-logo {
  width: 56px; height: 56px;
  background: #f3eee0;
  border-radius: 50%;
  padding: 8px;
  margin-bottom: 14px;
}
.site-footer__brand p { font-size: 0.92rem; color: #b8a980; line-height: 1.7; }
.site-footer ul { list-style: none; }
.site-footer ul li { margin: 8px 0; }
.site-footer ul li a {
  color: #d8c8a8;
  font-size: 0.96rem;
  transition: color var(--transition);
}
.site-footer ul li a:hover { color: #fff; }
.site-footer__bottom {
  padding-top: 28px;
  font-size: 0.78rem;
  color: #7a6e58;
}
.site-footer__bottom .version { color: #b8a980; font-weight: 600; }