:root {
  --c-bg:        #f0f4f8;
  --c-bg-alt:    #e4ecf4;
  --c-bg-dark:   #0e2340;
  --c-fg:        #0e2340;
  --c-fg-inv:    #f0f4f8;
  --c-muted:     #5a7595;
  --c-accent:    #1565c0;
  --c-accent-lt: #4fc3f7;
  --c-border:    #c8d8ea;

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

  --shadow-card: 0 2px 12px rgba(14,35,64,0.09), 0 1px 3px rgba(14,35,64,0.06);
}

*, *::before, *::after { box-sizing: border-box; margin: 0; padding: 0; }
html { font-size: 16px; scroll-behavior: smooth; background-color: var(--c-bg); }
body { font-family: var(--font-body); color: var(--c-fg); background-color: var(--c-bg); line-height: 1.6; -webkit-font-smoothing: antialiased; }
img, svg { display: block; max-width: 100%; }
a { color: inherit; text-decoration: none; }
ul, ol { list-style: none; }
button { cursor: pointer; border: none; background: none; font: inherit; }
h1 { font-size: clamp(2rem, 4vw, 3rem); font-weight: 700; line-height: 1.15; letter-spacing: -0.02em; }
h2 { font-size: clamp(1.4rem, 3vw, 2rem); font-weight: 700; line-height: 1.2; letter-spacing: -0.02em; }
h3 { font-size: clamp(1rem, 2vw, 1.3rem); font-weight: 600; }
p { font-size: 1rem; color: var(--c-muted); line-height: 1.75; }

.container { width: min(920px, 92%); margin-inline: auto; }
.label-tag { font-size: 0.72rem; font-weight: 600; letter-spacing: 0.12em; text-transform: uppercase; color: var(--c-accent); }
.btn { display: inline-flex; align-items: center; gap: var(--space-2); padding: 0.75rem 1.75rem; border-radius: var(--radius-sm); font-weight: 600; font-size: 0.92rem; transition: opacity 0.2s; }
.btn-primary { background-color: var(--c-accent); color: var(--c-fg-inv); }
.btn-primary:hover { opacity: 0.88; }
.sr-only { position: absolute; width: 1px; height: 1px; padding: 0; overflow: hidden; clip: rect(0,0,0,0); white-space: nowrap; border: 0; }

.site-header { position: sticky; top: 0; z-index: 100; background-color: var(--c-bg); border-bottom: 1px solid var(--c-border); }
.site-header__inner { display: flex; align-items: center; gap: var(--space-3); padding-block: var(--space-3); }
.site-header__logo { display: flex; align-items: center; gap: var(--space-2); }
.site-header__logo img { width: 32px; height: 32px; }
.site-header__brand { font-family: var(--font-display); font-weight: 700; font-size: 1.1rem; letter-spacing: -0.02em; color: var(--c-fg); }
.site-header__brand span { color: var(--c-accent); }

.page-hero { background-color: var(--c-bg-dark); color: var(--c-fg-inv); padding-block: var(--space-5); }
.page-hero .label-tag { color: var(--c-accent-lt); margin-bottom: var(--space-2); }
.page-hero h1 { color: var(--c-fg-inv); margin-bottom: var(--space-3); }
.page-hero p { color: #94b4cc; max-width: 60ch; }

.about-block { padding-block: var(--space-5); }
.about-block:nth-child(even) { background-color: var(--c-bg-alt); }
.about-block__inner { display: flex; flex-direction: column; gap: var(--space-3); }
.about-block h2 { margin-bottom: var(--space-2); }
.about-grid { display: grid; grid-template-columns: repeat(3, 1fr); gap: var(--space-3); margin-top: var(--space-4); }
.about-card { background-color: var(--c-bg); border-radius: var(--radius-md); padding: var(--space-4); border: 1px solid var(--c-border); box-shadow: var(--shadow-card); }
.about-card__num { font-size: 2rem; font-weight: 700; color: var(--c-accent); margin-bottom: var(--space-2); }
.about-card h3 { margin-bottom: var(--space-2); }

.legal-content { padding-block: var(--space-5); }
.legal-content h2 { margin-top: var(--space-5); margin-bottom: var(--space-2); color: var(--c-fg); }
.legal-content h2:first-child { margin-top: 0; }
.legal-content p { margin-bottom: var(--space-3); }
.legal-content ul { margin-left: var(--space-4); margin-bottom: var(--space-3); list-style: disc; }
.legal-content ul li { color: var(--c-muted); font-size: 1rem; line-height: 1.75; margin-bottom: var(--space-2); }

.site-footer { background-color: var(--c-bg-dark); color: var(--c-fg-inv); padding-block: var(--space-5); }
.site-footer__inner { display: grid; grid-template-columns: 2fr 1fr 1fr; gap: var(--space-5); padding-bottom: var(--space-4); border-bottom: 1px solid #1e3f65; }
.footer-brand { display: flex; flex-direction: column; gap: var(--space-3); }
.footer-brand__logo { display: flex; align-items: center; gap: var(--space-2); }
.footer-brand__logo img { width: 28px; height: 28px; }
.footer-brand__name { font-weight: 700; font-size: 0.95rem; color: var(--c-fg-inv); }
.footer-brand p { color: #7ea9c8; font-size: 0.85rem; max-width: 30ch; }
.footer-col h4 { font-size: 0.8rem; letter-spacing: 0.1em; text-transform: uppercase; color: var(--c-accent-lt); margin-bottom: var(--space-3); }
.footer-col ul { display: flex; flex-direction: column; gap: var(--space-2); }
.footer-col ul li a { color: #7ea9c8; font-size: 0.85rem; }
.footer-col ul li a:hover { color: var(--c-fg-inv); }
.site-footer__bottom { display: flex; justify-content: space-between; align-items: center; padding-top: var(--space-4); gap: var(--space-3); flex-wrap: wrap; }
.site-footer__bottom p { color: #4a6a88; font-size: 0.8rem; }
.footer-legal { display: flex; gap: var(--space-4); flex-wrap: wrap; }
.footer-legal a { color: #4a6a88; font-size: 0.8rem; }
.footer-legal a:hover { color: #7ea9c8; }

@media (max-width: 1024px) {
  .about-grid { grid-template-columns: 1fr 1fr; }
  .site-footer__inner { grid-template-columns: 1fr 1fr; }
}
@media (max-width: 640px) {
  :root { --space-5: 3rem; }
  .about-grid { grid-template-columns: 1fr; }
  .site-footer__inner { grid-template-columns: 1fr; }
  .site-footer__bottom { flex-direction: column; align-items: flex-start; }
}




/* wh-elem-contrast */
/* Auto: element text failed 4.5:1 against its resolved background. */
.about-block .label-tag { color: #2b6b88 !important; }
.intro .label-tag { color: #2f7594 !important; }
.how .label-tag { color: #2f7594 !important; }
.products .label-tag { color: #2b6b88 !important; }
.product-card .label-tag { color: #2f7594 !important; }
.case-study .label-tag { color: #2f7594 !important; }
.testimonials .label-tag { color: #2b6b88 !important; }
.testimonial-card .testimonial-card__role { color: #566f8e !important; }
.partners .label-tag { color: #2f7594 !important; }
.contact .label-tag { color: #2b6b88 !important; }