:root { color-scheme: light; --brand-orange: #f29800; --ink: #222528; --muted: #62696e; --line: #e3e5e7; }
* { box-sizing: border-box; }
body { margin: 0; background: #fff; color: var(--ink); font: 14px/1.8 -apple-system, BlinkMacSystemFont, "Hiragino Kaku Gothic ProN", "Yu Gothic", Meiryo, sans-serif; letter-spacing: 0; }
h1, h2, p { margin: 0; }
.usage-guide { max-width: 640px; margin: 0 auto; padding: 0 20px; overflow-wrap: anywhere; }
.guide-heading { padding: 22px 0 20px; border-top: 5px solid var(--brand-orange); border-bottom: 1px solid var(--line); }
.guide-audience { margin-bottom: 3px; color: var(--muted); font-size: 12px; }
h1 { font-size: 24px; line-height: 1.5; font-weight: 750; }
.guide-terms { padding-top: 21px; }
h2 { margin-bottom: 11px; font-size: 16px; line-height: 1.6; }
.guide-copyright { color: var(--muted); font-size: 12px; }
.guide-intro { margin-top: 10px; font-size: 13px; }
.guide-restrictions { margin: 16px 0; padding: 0; list-style: none; counter-reset: restriction; }
.guide-restrictions li { position: relative; padding: 10px 0 10px 31px; border-top: 1px solid var(--line); counter-increment: restriction; }
.guide-restrictions li:last-child { border-bottom: 1px solid var(--line); }
.guide-restrictions li::before { content: counter(restriction, decimal-leading-zero); position: absolute; left: 0; top: 12px; color: var(--muted); font-size: 11px; font-weight: 700; font-variant-numeric: tabular-nums; }
.guide-note { padding: 12px 14px; border-left: 3px solid var(--brand-orange); background: #f4f5f6; color: var(--ink); font-size: 14px; font-weight: 650; line-height: 1.8; }
.guide-entry { padding-top: 24px; }
.guide-entry > p { margin-bottom: 13px; color: var(--muted); font-size: 12px; }
.guide-continue { display: flex; align-items: center; justify-content: center; gap: 14px; width: 100%; min-height: 54px; padding: 13px 18px; border: 1px solid var(--brand-orange); border-radius: 5px; background: var(--brand-orange); color: var(--ink); font-size: 15px; line-height: 1.6; font-weight: 700; text-decoration: none; text-align: center; -webkit-tap-highlight-color: transparent; }
.guide-continue:hover { background: #e68d00; border-color: #e68d00; }
.guide-continue:focus-visible { outline: 3px solid #27829a; outline-offset: 4px; }
.guide-continue svg, .guide-continue i { display: block; width: 18px; height: 18px; flex: 0 0 18px; stroke-width: 1.8; }
.guide-footer { display: flex; flex-wrap: wrap; justify-content: space-between; gap: 4px 16px; margin-top: 26px; padding: 16px 0 22px; border-top: 1px solid var(--line); color: var(--muted); font-size: 10px; font-weight: 700; }
.guide-footer span { font-weight: 400; }
.sr-only { position: absolute; width: 1px; height: 1px; padding: 0; margin: -1px; overflow: hidden; clip-path: inset(50%); white-space: nowrap; border: 0; }
@media (max-width: 390px) {
  .usage-guide { padding-inline: 16px; }
  .guide-restrictions li { padding-left: 28px; }
}