:root {
  --bg: #ffffff;
  --bg-tinted: #fbfbfd;
  --text: #1d1d1f;
  --text-muted: #6e6e73;
  --accent: #b8860b;
  --accent-soft: rgba(184, 134, 11, 0.08);
  --separator: #d2d2d7;
  --shadow: 0 20px 50px rgba(0, 0, 0, 0.08);
}

* { box-sizing: border-box; margin: 0; padding: 0; }
html { scroll-behavior: smooth; -webkit-text-size-adjust: 100%; }
body {
  font-family: -apple-system, BlinkMacSystemFont, "SF Pro Display", "Helvetica Neue",
               "Hiragino Sans", "Hiragino Kaku Gothic ProN", "Noto Sans JP", sans-serif;
  background: var(--bg);
  color: var(--text);
  line-height: 1.6;
  -webkit-font-smoothing: antialiased;
  -moz-osx-font-smoothing: grayscale;
}

header {
  position: sticky; top: 0; z-index: 100;
  background: rgba(255, 255, 255, 0.72);
  backdrop-filter: saturate(180%) blur(20px);
  -webkit-backdrop-filter: saturate(180%) blur(20px);
  border-bottom: 1px solid rgba(0, 0, 0, 0.04);
}
.header-inner {
  max-width: 880px;
  margin: 0 auto;
  padding: 12px 24px;
  display: flex;
  align-items: center;
  justify-content: space-between;
}
.brand {
  display: flex;
  align-items: center;
  gap: 10px;
  font-size: 17px;
  font-weight: 600;
  color: var(--text);
  text-decoration: none;
}
.brand img { width: 28px; height: 28px; border-radius: 6px; }
.nav-cta {
  font-size: 14px;
  color: var(--accent);
  text-decoration: none;
  font-weight: 500;
}
.nav-cta:hover { opacity: 0.7; }

.breadcrumb {
  max-width: 880px;
  margin: 0 auto;
  padding: 20px 24px 0;
  font-size: 13px;
  color: var(--text-muted);
}
.breadcrumb a {
  color: var(--text-muted);
  text-decoration: none;
}
.breadcrumb a:hover { color: var(--accent); }
.breadcrumb span { margin: 0 8px; opacity: 0.5; }

main {
  max-width: 880px;
  margin: 0 auto;
  padding: 24px 24px 96px;
}

.page-title {
  font-size: clamp(28px, 5vw, 42px);
  font-weight: 700;
  letter-spacing: -0.022em;
  margin: 20px 0 12px;
  line-height: 1.15;
}
.page-sub {
  font-size: clamp(15px, 2vw, 17px);
  color: var(--text-muted);
  margin-bottom: 40px;
}

h2 {
  font-size: clamp(20px, 3vw, 26px);
  font-weight: 700;
  letter-spacing: -0.018em;
  margin: 56px 0 14px;
}
h3 {
  font-size: 17px;
  font-weight: 600;
  margin: 24px 0 8px;
}
p { margin-bottom: 14px; font-size: 16px; }
ol, ul { margin: 12px 0 14px 24px; }
li { margin-bottom: 6px; font-size: 16px; }

.qr-frame {
  margin: 24px 0;
  padding: 28px 20px;
  background: #000;
  border-radius: 16px;
  text-align: center;
}
.qr-frame img {
  max-width: 320px;
  width: 100%;
  height: auto;
  border-radius: 8px;
  display: block;
  margin: 0 auto;
}
.qr-caption {
  color: #fff;
  font-size: 14px;
  margin-top: 14px;
  opacity: 0.85;
}
.qr-download {
  display: inline-block;
  margin-top: 14px;
  color: var(--accent);
  font-size: 14px;
  font-weight: 600;
  text-decoration: none;
  background: rgba(255,255,255,0.95);
  padding: 8px 16px;
  border-radius: 999px;
}
.qr-download:hover { opacity: 0.85; }

.cta-link {
  display: inline-block;
  margin-top: 8px;
  padding: 12px 22px;
  background: var(--accent);
  color: #fff;
  font-weight: 600;
  text-decoration: none;
  border-radius: 999px;
  font-size: 15px;
}
.cta-link:hover { opacity: 0.9; }

.machine-list {
  list-style: none;
  margin: 24px 0 0;
  padding: 0;
}
.machine-list li {
  margin: 0;
  border-top: 1px solid var(--separator);
}
.machine-list li:last-child { border-bottom: 1px solid var(--separator); }
.machine-list a {
  display: flex;
  justify-content: space-between;
  align-items: center;
  padding: 18px 4px;
  color: var(--text);
  text-decoration: none;
  font-weight: 500;
  font-size: 17px;
}
.machine-list a:hover { color: var(--accent); }
.machine-list a::after { content: "→"; color: var(--text-muted); }

footer {
  border-top: 1px solid var(--separator);
  padding: 28px 24px 36px;
  text-align: center;
  color: var(--text-muted);
}
.footer-links {
  display: flex;
  justify-content: center;
  gap: 24px;
  margin-bottom: 14px;
  flex-wrap: wrap;
}
.footer-links a {
  color: var(--text-muted);
  text-decoration: none;
  font-size: 13px;
}
.footer-links a:hover { color: var(--text); }
.copyright { font-size: 11px; color: var(--text-muted); }
.disclaimer {
  max-width: 720px;
  margin: 16px auto 0;
  font-size: 11px;
  line-height: 1.6;
  color: var(--text-muted);
  opacity: 0.7;
}