:root {
  --bg: #ffffff;
  --bg-soft: #f5f7fa;
  --bg-accent: #eef3f8;
  --text: #1c2530;
  --text-soft: #55606c;
  --border: #dfe5ec;
  --primary: #1f5f8b;
  --primary-dark: #17475f;
  --accent: #2a9d8f;
  --max: 880px;
  --radius: 10px;
}

* { box-sizing: border-box; }

html { -webkit-text-size-adjust: 100%; }

body {
  margin: 0;
  font-family: "Hiragino Sans", "Hiragino Kaku Gothic ProN", "Noto Sans JP",
    "Yu Gothic", "Meiryo", system-ui, -apple-system, sans-serif;
  color: var(--text);
  background: var(--bg);
  line-height: 1.8;
  font-size: 16px;
}

a { color: var(--primary); text-decoration: none; }
a:hover { text-decoration: underline; }

.container { width: 100%; max-width: var(--max); margin: 0 auto; padding: 0 20px; }

/* Header */
.site-header {
  border-bottom: 1px solid var(--border);
  background: var(--bg);
  position: sticky;
  top: 0;
  z-index: 10;
}
.site-header .container {
  display: flex;
  align-items: center;
  justify-content: space-between;
  flex-wrap: wrap;
  gap: 8px 20px;
  padding-top: 14px;
  padding-bottom: 14px;
}
.brand {
  font-size: 1.25rem;
  font-weight: 700;
  color: var(--text);
  letter-spacing: 0.02em;
}
.brand:hover { text-decoration: none; }
.brand span { color: var(--primary); }
.site-nav { display: flex; gap: 18px; flex-wrap: wrap; font-size: 0.92rem; }
.site-nav a { color: var(--text-soft); }

/* Hero */
.hero {
  background: linear-gradient(160deg, var(--bg-accent), var(--bg-soft));
  border-bottom: 1px solid var(--border);
  padding: 56px 0;
}
.hero h1 { font-size: 1.75rem; line-height: 1.5; margin: 0 0 16px; }
.hero p { font-size: 1.05rem; color: var(--text-soft); margin: 0 0 24px; max-width: 640px; }
.hero .lead-note { font-size: 0.9rem; color: var(--text-soft); }

/* Sections */
section { padding: 44px 0; border-bottom: 1px solid var(--border); }
section:last-of-type { border-bottom: none; }
h2 {
  font-size: 1.4rem;
  margin: 0 0 20px;
  padding-bottom: 10px;
  border-bottom: 2px solid var(--primary);
  display: inline-block;
}
h3 { font-size: 1.1rem; margin: 28px 0 10px; }

/* Buttons */
.btn {
  display: inline-block;
  background: var(--primary);
  color: #fff;
  padding: 12px 22px;
  border-radius: var(--radius);
  font-weight: 600;
}
.btn:hover { background: var(--primary-dark); text-decoration: none; }

/* Feature list */
.features { list-style: none; padding: 0; margin: 0; display: grid; gap: 12px; }
.features li {
  background: var(--bg-soft);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  padding: 14px 18px;
}
.features li strong { color: var(--primary-dark); }

/* Pricing card */
.pricing {
  background: var(--bg-soft);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  padding: 24px;
  max-width: 460px;
}
.price-row { display: flex; align-items: baseline; gap: 10px; flex-wrap: wrap; }
.price-main { font-size: 2rem; font-weight: 700; color: var(--primary-dark); }
.price-standard { color: var(--text-soft); text-decoration: line-through; }
.price-tag {
  display: inline-block;
  background: var(--accent);
  color: #fff;
  font-size: 0.78rem;
  padding: 2px 10px;
  border-radius: 999px;
  font-weight: 600;
}
.pricing ul { margin: 16px 0 0; padding-left: 1.2em; color: var(--text-soft); }
.pricing ul li { margin: 4px 0; }

/* Notice / guardrail box */
.notice {
  background: var(--bg-accent);
  border-left: 4px solid var(--primary);
  border-radius: 0 var(--radius) var(--radius) 0;
  padding: 14px 18px;
  font-size: 0.92rem;
  color: var(--text-soft);
  margin-top: 20px;
}

/* Definition table (特商法 / privacy) */
.spec-table { width: 100%; border-collapse: collapse; margin-top: 8px; }
.spec-table th, .spec-table td {
  text-align: left;
  vertical-align: top;
  padding: 12px 14px;
  border: 1px solid var(--border);
  font-size: 0.95rem;
}
.spec-table th {
  background: var(--bg-soft);
  width: 34%;
  font-weight: 600;
  white-space: nowrap;
}
.placeholder { color: #b23b3b; font-weight: 600; }

.page-lead { color: var(--text-soft); margin: 0 0 24px; }

/* Footer */
.site-footer {
  background: var(--bg-soft);
  border-top: 1px solid var(--border);
  padding: 28px 0;
  font-size: 0.88rem;
  color: var(--text-soft);
}
.site-footer .container { display: flex; justify-content: space-between; flex-wrap: wrap; gap: 12px; }
.site-footer nav { display: flex; gap: 16px; flex-wrap: wrap; }

/* Content pages */
.content { padding: 40px 0; }
.content h1 { font-size: 1.6rem; margin: 0 0 8px; }

@media (max-width: 600px) {
  .hero { padding: 40px 0; }
  .hero h1 { font-size: 1.45rem; }
  .spec-table th { width: 40%; white-space: normal; }
  .site-header .container { justify-content: center; }
}