:root {
  --ink: #172033;
  --muted: #606a7b;
  --line: #dfe4ec;
  --paper: #ffffff;
  --ground: #f2f5f9;
  --blue: #1557d5;
  --blue-deep: #0c377f;
  --orange: #ef5a36;
  --yellow: #ffd95a;
  --good: #eaf3ff;
  --caution: #fff2ed;
}

* { box-sizing: border-box; }
html { scroll-behavior: smooth; }
body {
  margin: 0;
  color: var(--ink);
  background: var(--ground);
  font-family: "Hiragino Kaku Gothic ProN", "Yu Gothic", Meiryo, system-ui, sans-serif;
  font-size: 17px;
  line-height: 1.9;
}
a { color: var(--blue); text-underline-offset: 3px; }
img { display: block; width: 100%; height: auto; }

.site-header {
  background: var(--ink);
  color: #fff;
  border-bottom: 5px solid var(--orange);
}
.header-inner {
  max-width: 1120px;
  margin: auto;
  padding: 18px 24px;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 20px;
}
.brand { color: #fff; text-decoration: none; font-weight: 800; letter-spacing: .03em; }
.brand span { color: var(--yellow); font-size: 1.25em; }
.site-nav { display: flex; gap: 18px; font-size: .9rem; }
.site-nav a { color: #dfe7f7; text-decoration: none; }
.site-nav a:hover { color: #fff; }

.article-shell { max-width: 1120px; margin: 32px auto 72px; padding: 0 24px; }
.article-head {
  display: grid;
  grid-template-columns: 1.12fr .88fr;
  gap: 34px;
  align-items: center;
  background: var(--paper);
  border: 1px solid var(--line);
  border-radius: 22px;
  overflow: hidden;
  box-shadow: 0 18px 50px rgba(23, 32, 51, .08);
}
.head-copy { padding: 34px 0 34px 40px; }
.eyebrow { margin: 0 0 10px; color: var(--orange); font-size: .82rem; font-weight: 800; letter-spacing: .12em; }
h1 { margin: 0 0 18px; font-size: clamp(2rem, 4.5vw, 3.5rem); line-height: 1.25; letter-spacing: -.035em; }
.lead { margin: 0; color: #3f4858; font-size: 1.05rem; }
.hero-image { height: 100%; min-height: 430px; object-fit: cover; }

.disclosure { max-width: 800px; margin: 18px auto 0; color: var(--muted); font-size: .78rem; }
.article-body { max-width: 800px; margin: 34px auto 0; }
.article-body > h2 { margin: 64px 0 18px; font-size: clamp(1.5rem, 3vw, 2rem); line-height: 1.45; letter-spacing: -.02em; }
.article-body > h2::before { content: ""; display: block; width: 42px; height: 5px; margin-bottom: 14px; background: var(--orange); border-radius: 9px; }
.article-body h3 { margin: 36px 0 12px; font-size: 1.22rem; line-height: 1.5; }
.article-body p { margin: 0 0 22px; }
.verdict { font-size: 1.08rem; }
.summary-grid { display: grid; grid-template-columns: 1fr 1fr; gap: 18px; margin: 26px 0; }
.summary-card { padding: 22px 24px; border-radius: 16px; }
.summary-card.good { background: var(--good); border-top: 5px solid var(--blue); }
.summary-card.caution { background: var(--caution); border-top: 5px solid var(--orange); }
.summary-card h3 { margin: 0 0 10px; }
.summary-card ul { margin: 0; padding-left: 1.25em; }
.summary-card li + li { margin-top: 5px; }
.fit-note { padding: 20px 24px; background: var(--ink); color: #fff; border-radius: 14px; font-weight: 700; }
.photo { margin: 32px 0; }
.photo img { border-radius: 16px; box-shadow: 0 10px 30px rgba(23, 32, 51, .1); }
.photo figcaption { margin-top: 9px; color: var(--muted); font-size: .84rem; line-height: 1.65; }
.photo.portrait { max-width: 470px; margin-left: auto; margin-right: auto; }
.photo.small { max-width: 620px; margin-left: auto; margin-right: auto; }
.specs { width: 100%; border-collapse: collapse; background: var(--paper); border-radius: 14px; overflow: hidden; }
.specs th, .specs td { padding: 11px 15px; border-bottom: 1px solid var(--line); text-align: left; vertical-align: top; }
.specs th { width: 34%; color: var(--muted); font-weight: 600; }
.button-row { margin: 28px 0; }
.button {
  display: inline-block;
  padding: 14px 22px;
  color: #fff;
  background: var(--blue);
  border-radius: 10px;
  text-decoration: none;
  font-weight: 800;
  box-shadow: 0 6px 0 var(--blue-deep);
}
.button:hover { transform: translateY(1px); box-shadow: 0 5px 0 var(--blue-deep); }
.affiliate-link > a {
  display: inline-block;
  padding: 14px 22px;
  border-radius: 12px;
  background: var(--blue);
  color: #fff;
  font-weight: 700;
  text-decoration: none;
  box-shadow: 0 7px 0 var(--blue-deep);
}
.affiliate-link > a:hover { transform: translateY(1px); box-shadow: 0 5px 0 var(--blue-deep); }
.note { padding: 18px 22px; border-left: 5px solid var(--yellow); background: #fffbea; }
.references { font-size: .87rem; color: var(--muted); }

.site-footer { background: var(--ink); color: #cad3e3; }
.footer-inner { max-width: 800px; margin: auto; padding: 34px 24px; display: flex; justify-content: space-between; gap: 20px; }
.footer-inner a { color: #fff; }
.simple-page { max-width: 760px; min-height: 70vh; margin: 46px auto 80px; padding: 0 24px; }
.simple-page h1 { font-size: 2.3rem; }
.simple-page h2 { margin-top: 42px; }

@media (max-width: 760px) {
  body { font-size: 16px; line-height: 1.85; }
  .header-inner { padding: 14px 18px; }
  .site-nav { gap: 12px; font-size: .8rem; }
  .article-shell { margin-top: 16px; padding: 0 14px; }
  .article-head { grid-template-columns: 1fr; gap: 0; border-radius: 16px; }
  .head-copy { padding: 26px 22px; }
  .hero-image { min-height: 0; aspect-ratio: 4 / 3; }
  .summary-grid { grid-template-columns: 1fr; }
  .article-body > h2 { margin-top: 48px; }
  .footer-inner { display: block; }
}

@media (prefers-reduced-motion: reduce) { html { scroll-behavior: auto; } }