:root {
  --c-bg:       #f0f4f8;
  --c-fg:       #0b2d4e;
  --c-muted:    #6b8ba4;
  --c-accent:   #3ab4e8;
  --c-surface:  #ffffff;
  --c-dark:     #0b2d4e;
  --c-dark-alt: #0e3a62;
  --c-mid:      #d6e8f5;

  --space-1: 0.25rem;
  --space-2: 0.5rem;
  --space-3: 1rem;
  --space-4: 2rem;
  --space-5: 4rem;
  --space-6: 8rem;

  --radius-sm: 4px;
  --radius-md: 8px;
  --radius-lg: 16px;

  --font-display: 'Noto Sans JP', 'Hiragino Kaku Gothic ProN', sans-serif;
  --font-body:    'Noto Sans JP', 'Hiragino Kaku Gothic ProN', sans-serif;
}

*, *::before, *::after { box-sizing: border-box; margin: 0; padding: 0; }
html { font-size: 16px; }
body {
  font-family: var(--font-body);
  background: var(--c-bg);
  color: var(--c-fg);
  line-height: 1.6;
  -webkit-font-smoothing: antialiased;
}
img { display: block; max-width: 100%; }
a { color: var(--c-accent); text-decoration: none; }
a:hover { text-decoration: underline; }
ul, ol { list-style: none; }
button { cursor: pointer; border: none; background: none; font: inherit; }

.container {
  width: 100%;
  max-width: 1200px;
  margin: 0 auto;
  padding: 0 var(--space-4);
}

.site-header {
  position: sticky;
  top: 0;
  z-index: 100;
  background: var(--c-surface);
  border-bottom: 1px solid var(--c-mid);
}
.site-header .container {
  display: flex;
  align-items: center;
  height: 72px;
}
.header-brand {
  display: flex;
  align-items: center;
  gap: var(--space-3);
  text-decoration: none;
}
.header-logo { width: 44px; height: 44px; flex-shrink: 0; }
.header-name {
  font-family: var(--font-display);
  font-weight: 700;
  font-size: 1.25rem;
  color: var(--c-fg);
  letter-spacing: -0.01em;
}

.page-hero {
  background: var(--c-dark);
  color: #f0f4f8;
  padding: var(--space-5) 0;
}
.page-hero .breadcrumb {
  font-size: 0.8rem;
  color: rgba(240,244,248,0.5);
  margin-bottom: var(--space-2);
}
.page-hero .breadcrumb a { color: var(--c-accent); }
.page-hero h1 {
  font-family: var(--font-display);
  font-weight: 700;
  font-size: clamp(1.8rem, 3.5vw, 2.8rem);
  line-height: 1.2;
  letter-spacing: -0.01em;
  margin-bottom: var(--space-2);
}
.page-hero .meta {
  font-size: 0.85rem;
  color: rgba(240,244,248,0.5);
}

.page-body {
  padding: var(--space-5) 0 var(--space-6);
}
.page-content {
  max-width: 780px;
}
.page-content h2 {
  font-family: var(--font-display);
  font-weight: 700;
  font-size: clamp(1.2rem, 2vw, 1.5rem);
  color: var(--c-fg);
  margin-top: var(--space-5);
  margin-bottom: var(--space-3);
  padding-bottom: var(--space-2);
  border-bottom: 2px solid var(--c-mid);
}
.page-content h3 {
  font-family: var(--font-display);
  font-weight: 600;
  font-size: 1.05rem;
  color: var(--c-fg);
  margin-top: var(--space-4);
  margin-bottom: var(--space-2);
}
.page-content p {
  font-size: 0.95rem;
  line-height: 1.75;
  color: var(--c-fg);
  margin-bottom: var(--space-3);
}
.page-content ul, .page-content ol {
  padding-left: var(--space-4);
  margin-bottom: var(--space-3);
}
.page-content ul { list-style: disc; }
.page-content ol { list-style: decimal; }
.page-content li {
  font-size: 0.95rem;
  line-height: 1.75;
  color: var(--c-fg);
  margin-bottom: var(--space-1);
}
.page-content a { color: var(--c-accent); }
.page-content strong { font-weight: 700; }

.about-blocks {
  display: flex;
  flex-direction: column;
  gap: var(--space-5);
}
.about-block {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: var(--space-5);
  align-items: center;
}
.about-block.reverse { direction: rtl; }
.about-block.reverse > * { direction: ltr; }
.about-block-img {
  aspect-ratio: 4 / 3;
  background: var(--c-mid);
  border-radius: var(--radius-lg);
  display: flex;
  align-items: center;
  justify-content: center;
}
.about-block-img svg { width: 80px; height: 80px; opacity: 0.25; }
.about-block-text .section-label {
  display: inline-block;
  color: var(--c-accent);
  font-weight: 700;
  font-size: 0.75rem;
  letter-spacing: 0.14em;
  text-transform: uppercase;
  margin-bottom: var(--space-2);
}
.about-block-text h2 {
  font-family: var(--font-display);
  font-weight: 700;
  font-size: clamp(1.4rem, 2.5vw, 1.9rem);
  margin-bottom: var(--space-3);
  border: none;
  padding: 0;
  margin-top: 0;
}
.about-block-text p {
  color: var(--c-muted);
  line-height: 1.75;
  font-size: 0.95rem;
  margin-bottom: var(--space-3);
}

.policy-content {
  max-width: 800px;
  line-height: 1.8;
}
.policy-content h2 {
  font-family: var(--font-display);
  font-weight: 700;
  font-size: 1.3rem;
  color: var(--c-fg);
  margin-top: var(--space-5);
  margin-bottom: var(--space-3);
  border-bottom: 2px solid var(--c-mid);
  padding-bottom: var(--space-2);
}
.policy-content h3 {
  font-family: var(--font-display);
  font-weight: 600;
  font-size: 1.05rem;
  color: var(--c-fg);
  margin-top: var(--space-4);
  margin-bottom: var(--space-2);
}
.policy-content p {
  font-size: 0.95rem;
  color: var(--c-fg);
  margin-bottom: var(--space-3);
  line-height: 1.75;
}
.policy-content ul, .policy-content ol {
  margin-left: var(--space-4);
  margin-bottom: var(--space-3);
}
.policy-content ul { list-style: disc; }
.policy-content ol { list-style: decimal; }
.policy-content li {
  font-size: 0.95rem;
  color: var(--c-fg);
  margin-bottom: var(--space-2);
  line-height: 1.75;
}
.policy-content a {
  color: var(--c-accent);
  text-decoration: underline;
}
.policy-content a:hover {
  opacity: 0.8;
}

.site-footer {
  background: #061e35;
  color: rgba(240,244,248,0.75);
}
.footer-bottom {
  padding: var(--space-4) 0;
  display: flex;
  align-items: center;
  justify-content: space-between;
}
.footer-copy { font-size: 0.8rem; color: rgba(240,244,248,0.35); }
.footer-legal { display: flex; gap: var(--space-4); }
.footer-legal a { font-size: 0.8rem; color: rgba(240,244,248,0.35); text-decoration: none; }
.footer-legal a:hover { color: var(--c-accent); }

@media (max-width: 1024px) {
  .about-block { grid-template-columns: 1fr; }
  .about-block.reverse { direction: ltr; }
}
@media (max-width: 640px) {
  .container { padding: 0 var(--space-3); }
  .footer-bottom { flex-direction: column; gap: var(--space-2); text-align: center; }
  .footer-legal { flex-wrap: wrap; justify-content: center; }
  .header-name { font-size: 1rem; }
}