:root {
  --guide-red: #e60012;
  --guide-red-dark: #b8000e;
  --guide-blue: #246bce;
  --guide-text: #242424;
  --guide-muted: #626262;
  --guide-bg: #f6f7f9;
  --guide-border: #e5e7eb;
}

* { box-sizing: border-box; }
body { margin: 0; color: var(--guide-text); background: var(--guide-bg); font-family: "Noto Sans JP", sans-serif; line-height: 1.85; }
a { color: var(--guide-blue); }
.guide-header { background: #fff; border-bottom: 1px solid var(--guide-border); }
.guide-nav { max-width: 960px; margin: 0 auto; padding: 1rem 1.25rem; display: flex; align-items: center; justify-content: space-between; gap: 1rem; }
.guide-brand { color: var(--guide-red); font-size: 1.15rem; font-weight: 700; text-decoration: none; }
.guide-nav-links { display: flex; flex-wrap: wrap; gap: 1rem; font-size: .92rem; }
.guide-nav-links a { color: #444; text-decoration: none; }
.guide-main { max-width: 880px; margin: 0 auto; padding: 2rem 1.25rem 4rem; }
.guide-hero, .guide-card, .guide-cta, .guide-related { background: #fff; border: 1px solid var(--guide-border); border-radius: 16px; box-shadow: 0 4px 18px rgba(0,0,0,.04); }
.guide-hero { padding: clamp(1.5rem, 5vw, 3rem); margin-bottom: 1.5rem; border-top: 5px solid var(--guide-red); }
.guide-kicker { margin: 0 0 .5rem; color: var(--guide-red-dark); font-weight: 700; font-size: .92rem; }
h1 { margin: 0 0 1rem; font-size: clamp(1.8rem, 5vw, 2.7rem); line-height: 1.4; }
.guide-lead { margin: 0; font-size: 1.08rem; }
.guide-summary { margin-top: 1.25rem; padding: 1rem 1.15rem; background: #fff6f6; border-left: 4px solid var(--guide-red); border-radius: 8px; }
.guide-card { padding: clamp(1.25rem, 4vw, 2rem); margin: 1.25rem 0; }
.guide-card h2, .guide-related h2 { margin: 0 0 .8rem; font-size: 1.45rem; line-height: 1.5; }
.guide-card h3 { margin: 1.4rem 0 .35rem; font-size: 1.08rem; }
.guide-card p:last-child { margin-bottom: 0; }
.guide-list { padding-left: 1.35rem; }
.guide-list li { margin: .45rem 0; }
.guide-steps { list-style: none; padding: 0; counter-reset: steps; }
.guide-steps li { counter-increment: steps; position: relative; padding: 0 0 1.25rem 3.25rem; min-height: 3rem; }
.guide-steps li::before { content: counter(steps); position: absolute; left: 0; top: .1rem; width: 2.25rem; height: 2.25rem; display: grid; place-items: center; color: #fff; background: var(--guide-red); border-radius: 50%; font-weight: 700; }
.guide-note { padding: 1rem 1.15rem; background: #f3f7fd; border: 1px solid #d7e5f8; border-radius: 10px; color: #334155; }
.guide-cta { margin: 1.5rem 0; padding: 1.6rem; text-align: center; background: linear-gradient(135deg, #fff, #fff4f4); }
.guide-cta h2 { margin: 0 0 .4rem; font-size: 1.35rem; }
.guide-cta p { margin: 0 0 1rem; color: var(--guide-muted); }
.guide-cta-button { display: inline-block; padding: .9rem 1.6rem; color: #fff; background: var(--guide-red); border-radius: 999px; font-weight: 700; text-decoration: none; box-shadow: 0 4px 10px rgba(230,0,18,.22); }
.guide-cta-button:hover { background: var(--guide-red-dark); transform: translateY(-1px); }
.guide-related { padding: 1.5rem; margin-top: 1.5rem; }
.guide-related ul { margin: 0; padding-left: 1.25rem; }
.guide-footer { padding: 2rem 1rem; color: #666; background: #fff; border-top: 1px solid var(--guide-border); text-align: center; font-size: .9rem; }
.guide-footer a { margin: 0 .5rem; color: #555; }
@media (max-width: 600px) {
  .guide-nav { align-items: flex-start; flex-direction: column; }
  .guide-main { padding-top: 1.25rem; }
  .guide-hero, .guide-card, .guide-cta, .guide-related { border-radius: 12px; }
}
@media (prefers-reduced-motion: reduce) { .guide-cta-button { transition: none; } }