:root {
  --color-primary: #0369A1;
  --color-secondary: #0EA5E9;
  --color-accent: #F97316;
  --color-neutral-dark: #0C4A6E;
  --color-neutral-light: #F0F9FF;
  --color-text: #0C4A6E;
  --color-muted: #475569;
  --color-border: rgba(12, 74, 110, 0.12);
  --font-heading: 'Shippori Mincho', serif;
  --font-body: 'Noto Sans JP', sans-serif;
  --ease: cubic-bezier(0.22, 1, 0.36, 1);
  --radius: 20px;
  --shadow-sm: 0 2px 20px rgba(12,74,110,0.06);
  --shadow-md: 0 10px 40px -10px rgba(12,74,110,0.18);
  --shadow-lg: 0 30px 60px -30px rgba(3, 105, 161, 0.35);
}

/* === Reset & base === */
* { box-sizing: border-box; }
html, body { margin: 0; padding: 0; }
body {
  font-family: var(--font-body);
  color: var(--color-text);
  background: #ffffff;
  line-height: 1.7;
  -webkit-font-smoothing: antialiased;
}
img { max-width: 100%; height: auto; display: block; }
a { color: var(--color-primary); text-decoration: none; transition: color .2s var(--ease); }
a:hover { color: var(--color-accent); }
h1, h2, h3, h4 { font-family: var(--font-heading); color: var(--color-neutral-dark); line-height: 1.3; letter-spacing: -0.01em; margin: 0 0 1rem; }
h1 { font-size: clamp(2rem, 5vw, 3.5rem); font-weight: 700; }
h2 { font-size: clamp(1.5rem, 3.5vw, 2.25rem); font-weight: 500; }
h3 { font-size: 1.25rem; font-weight: 500; }
p { margin: 0 0 1rem; }

/* === Layout === */
.container { width: 100%; max-width: 1160px; margin-inline: auto; padding-inline: 1.25rem; }
.container.narrow { max-width: 780px; }

/* === Header (glass nav) === */
.site-header {
  position: sticky; top: 0; z-index: 100;
  background: rgba(240, 249, 255, 0.75);
  backdrop-filter: blur(16px) saturate(1.4);
  -webkit-backdrop-filter: blur(16px) saturate(1.4);
  border-bottom: 1px solid transparent;
  transition: background .3s var(--ease), box-shadow .3s var(--ease), border-color .3s var(--ease);
}
.site-header.scrolled {
  background: rgba(255,255,255,0.9);
  border-bottom-color: var(--color-border);
  box-shadow: var(--shadow-sm);
}
.header-inner { display: flex; align-items: center; justify-content: space-between; gap: 1rem; padding-block: .75rem; }
.logo img { height: 72px; width: auto; display: block; }
.nav-toggle {
  background: transparent; border: 1px solid var(--color-border);
  color: var(--color-neutral-dark); padding: .5rem; border-radius: 10px;
  cursor: pointer; display: inline-flex;
}
.primary-nav { display: none; flex-direction: column; gap: .5rem; }
.primary-nav.is-open { display: flex; position: absolute; top: 100%; left: 0; right: 0; background: #fff; padding: 1rem 1.25rem 1.5rem; box-shadow: var(--shadow-md); border-top: 1px solid var(--color-border); }
.primary-nav a { color: var(--color-neutral-dark); font-weight: 500; padding: .5rem 0; position: relative; }
.primary-nav a::after { content: ''; position: absolute; left: 0; bottom: 0; height: 2px; width: 100%; background: var(--color-accent); transform: scaleX(0); transform-origin: left; transition: transform .3s var(--ease); }
.primary-nav a:hover::after { transform: scaleX(1); }
.primary-nav .nav-cta { background: var(--color-primary); color: #fff; padding: .5rem 1rem; border-radius: 999px; }
.primary-nav .nav-cta::after { display: none; }
.primary-nav .nav-cta:hover { background: var(--color-neutral-dark); }

@media (min-width: 900px) {
  .logo img { height: 96px; }
  .nav-toggle { display: none; }
  .primary-nav, .primary-nav.is-open { display: flex; flex-direction: row; align-items: center; gap: 1.5rem; position: static; padding: 0; box-shadow: none; background: transparent; border: 0; }
}

/* === Hero card === */
.hero-card-section {
  padding-block: 3rem 4rem;
  background: linear-gradient(160deg, var(--color-neutral-light) 0%, #ffffff 60%);
  position: relative;
  overflow: hidden;
}
.hero-card-section::before {
  content: ''; position: absolute; inset: -20% -10% auto auto; width: 60%; height: 60%;
  background: radial-gradient(circle at 70% 30%, rgba(249, 115, 22, 0.14), transparent 60%);
  pointer-events: none;
}
.hero-card-section::after {
  content: ''; position: absolute; inset: auto auto -30% -10%; width: 60%; height: 60%;
  background: radial-gradient(circle at 30% 70%, rgba(14, 165, 233, 0.18), transparent 60%);
  pointer-events: none;
}
.hero-card {
  position: relative;
  max-width: 880px; margin-inline: auto;
  padding: 2.5rem 1.75rem;
  border-radius: 24px;
  background: rgba(255,255,255,0.85);
  backdrop-filter: blur(10px);
  box-shadow: var(--shadow-lg);
  border: 1px solid rgba(255,255,255,0.6);
  text-align: left;
}
.eyebrow { text-transform: uppercase; letter-spacing: .18em; font-size: .75rem; color: var(--color-secondary); font-weight: 700; margin-bottom: 1rem; }
.hero-sub { font-size: 1.05rem; color: var(--color-muted); max-width: 55ch; }
.hero-ctas { display: flex; flex-wrap: wrap; gap: .75rem; margin-block: 1.5rem; }
.hero-card-figure { margin: 1.5rem 0 0; border-radius: 16px; overflow: hidden; box-shadow: var(--shadow-md); }
.hero-card-figure img { aspect-ratio: 16/9; object-fit: cover; width: 100%; }

@media (min-width: 768px) {
  .hero-card { padding: 4rem 3.5rem; }
}

/* === Buttons === */
.btn {
  display: inline-flex; align-items: center; justify-content: center;
  padding: .85rem 1.5rem; border-radius: 999px;
  font-weight: 600; font-size: 1rem;
  transition: transform .2s var(--ease), box-shadow .2s var(--ease), background .2s var(--ease);
  cursor: pointer; border: 0;
  font-family: var(--font-body);
}
.btn-primary {
  background: linear-gradient(135deg, var(--color-primary), var(--color-secondary));
  color: #fff;
  box-shadow: 0 8px 24px -8px rgba(3,105,161,0.5);
}
.btn-primary:hover { transform: translateY(-2px); box-shadow: 0 14px 28px -8px rgba(3,105,161,0.6); color: #fff; }
.btn-ghost {
  background: transparent; color: var(--color-primary);
  border: 1.5px solid var(--color-primary);
}
.btn-ghost:hover { background: var(--color-primary); color: #fff; }
.btn:focus-visible { outline: 3px solid var(--color-accent); outline-offset: 3px; }

/* === Intro band === */
.intro-band { padding-block: 3.5rem; }
.intro-band h2 { text-align: center; margin-bottom: 1.5rem; }
.intro-band p { font-size: 1.05rem; color: var(--color-muted); }

/* === Highlights grid === */
.highlights { padding-block: 3rem 4rem; background: linear-gradient(180deg, #ffffff 0%, var(--color-neutral-light) 100%); }
.section-title { text-align: center; margin-bottom: 2.5rem; }
.grid { display: grid; gap: 1.25rem; grid-template-columns: 1fr; }
@media (min-width: 640px) { .grid-3 { grid-template-columns: repeat(2, 1fr); } .grid-4 { grid-template-columns: repeat(2, 1fr); } }
@media (min-width: 960px) {
  .grid-3 { grid-template-columns: repeat(3, 1fr); }
  .grid-4 { grid-template-columns: repeat(4, 1fr); }
}
.card {
  background: #fff;
  border-radius: var(--radius);
  padding: 1.75rem;
  border: 1px solid var(--color-border);
  box-shadow: var(--shadow-sm);
  transition: transform .25s var(--ease), box-shadow .25s var(--ease);
}
.card:hover { transform: translateY(-4px); box-shadow: var(--shadow-md); }
.card h3 { color: var(--color-neutral-dark); }
.card p { color: var(--color-muted); font-size: .95rem; margin: 0; }
.card-icon {
  display: inline-flex; align-items: center; justify-content: center;
  width: 48px; height: 48px; border-radius: 14px;
  background: linear-gradient(135deg, rgba(14,165,233,0.15), rgba(3,105,161,0.1));
  color: var(--color-primary);
  margin-bottom: 1rem;
}

/* === Testimonial === */
.testimonial { padding-block: 3rem; background: var(--color-neutral-light); }
.testimonial blockquote {
  margin: 0; padding: 2rem 1.5rem; text-align: center;
  position: relative;
}
.testimonial blockquote p {
  font-family: var(--font-heading);
  font-size: clamp(1.15rem, 2.2vw, 1.5rem);
  color: var(--color-neutral-dark);
  line-height: 1.7;
}
.testimonial cite { display: block; margin-top: 1rem; font-style: normal; color: var(--color-muted); font-size: .95rem; }

/* === CTA band === */
.cta-band {
  padding-block: 3.5rem;
  background: linear-gradient(135deg, var(--color-primary), var(--color-neutral-dark));
  color: #fff;
  text-align: center;
}
.cta-band h2 { color: #fff; }
.cta-band p { color: rgba(240,249,255,0.85); margin-bottom: 1.5rem; }
.cta-band .btn-primary {
  background: var(--color-accent);
  box-shadow: 0 8px 24px -8px rgba(249,115,22,0.6);
}
.cta-band .btn-primary:hover { background: #ea6a12; }

/* === Contact band === */
.contact-band { padding-block: 3rem; text-align: center; }
.contact-band p { color: var(--color-muted); line-height: 2; }

/* === Form === */
.form-section { padding-block: 3rem; background: var(--color-neutral-light); }
.contact-form { display: grid; gap: 1.25rem; background: #fff; padding: 2rem; border-radius: var(--radius); box-shadow: var(--shadow-sm); border: 1px solid var(--color-border); }
.field { display: grid; gap: .35rem; }
.field label { font-weight: 500; color: var(--color-neutral-dark); font-size: .95rem; }
.field input, .field textarea {
  font: inherit; padding: .8rem 1rem;
  border: 1px solid var(--color-border);
  border-radius: 12px; background: #fff; color: var(--color-text);
  transition: border-color .2s var(--ease), box-shadow .2s var(--ease);
}
.field input:focus, .field textarea:focus {
  outline: none; border-color: var(--color-secondary);
  box-shadow: 0 0 0 3px rgba(14,165,233,0.2);
}
.form-consent { display: flex; gap: .5rem; align-items: flex-start; font-size: .875rem; color: var(--color-muted); flex-wrap: wrap; }
.form-consent input { margin-top: .25rem; }

/* === FAQ === */
.faq { padding-block: 3rem; }
.faq h2 { text-align: center; margin-bottom: 2rem; }
.faq details {
  background: #fff; border: 1px solid var(--color-border);
  border-radius: 14px; padding: 1rem 1.25rem; margin-bottom: .75rem;
  transition: box-shadow .2s var(--ease);
}
.faq details[open] { box-shadow: var(--shadow-sm); }
.faq summary { font-weight: 600; cursor: pointer; color: var(--color-neutral-dark); font-family: var(--font-heading); font-size: 1.05rem; list-style: none; display: flex; justify-content: space-between; align-items: center; }
.faq summary::after { content: '+'; color: var(--color-secondary); font-size: 1.4rem; transition: transform .2s var(--ease); }
.faq details[open] summary::after { transform: rotate(45deg); }
.faq details p { margin-top: .75rem; color: var(--color-muted); }

/* === Footer === */
.site-footer { background: var(--color-neutral-dark); color: rgba(240,249,255,0.85); padding-block: 3rem 1.5rem; }
.footer-grid { display: grid; gap: 2rem; grid-template-columns: 1fr; }
@media (min-width: 768px) { .footer-grid { grid-template-columns: 1.2fr 1fr 1.2fr; } }
.site-footer h4 { color: #fff; font-family: var(--font-heading); font-size: 1rem; margin-bottom: 1rem; }
.footer-logo img { height: 64px; filter: brightness(0) invert(1); }
.footer-tag { color: rgba(240,249,255,0.7); margin-top: .75rem; font-size: .9rem; }
.footer-nav { display: flex; flex-direction: column; gap: .5rem; }
.footer-nav a { color: rgba(240,249,255,0.8); font-size: .95rem; }
.footer-nav a:hover { color: var(--color-accent); }
.footer-contact p { color: rgba(240,249,255,0.75); font-size: .9rem; margin-bottom: .75rem; }
.legal-links a { color: rgba(240,249,255,0.85); font-size: .85rem; }
.legal-links a:hover { color: var(--color-accent); }
.copyright { border-top: 1px solid rgba(255,255,255,0.1); padding-top: 1.25rem; margin-top: 2rem; font-size: .85rem; color: rgba(240,249,255,0.6); }

/* === Cookie banner === */
.cookie-banner {
  position: fixed; left: 1rem; right: 1rem; bottom: 1rem;
  display: none; z-index: 9999;
  background: var(--color-neutral-dark); color: var(--color-neutral-light);
  padding: 1.25rem; border-radius: 16px;
  box-shadow: 0 20px 60px -10px rgba(0,0,0,0.4);
  max-width: 520px;
}
.cookie-banner.is-visible { display: block; }
.cookie-banner p { margin: 0 0 1rem; font-size: .9rem; line-height: 1.6; }
.cookie-banner__actions { display: flex; flex-wrap: wrap; gap: .5rem; }
.cookie-banner__actions button, .cookie-banner__prefs button {
  border: 0; padding: .55rem 1rem; border-radius: 999px;
  font: inherit; font-size: .875rem; font-weight: 600; cursor: pointer;
  background: rgba(255,255,255,0.12); color: var(--color-neutral-light);
  transition: background .2s var(--ease);
}
.cookie-banner__actions button:hover, .cookie-banner__prefs button:hover { background: rgba(255,255,255,0.22); }
.cookie-banner [data-cookie-accept] { background: var(--color-accent); color: #fff; }
.cookie-banner [data-cookie-accept]:hover { background: #ea6a12; }
.cookie-banner__prefs { margin-top: 1rem; display: grid; gap: .5rem; }
.cookie-banner__prefs label { display: flex; gap: .5rem; align-items: center; font-size: .875rem; }

/* === Reveal animation === */
.reveal { opacity: 0; transform: translateY(24px); transition: opacity .7s var(--ease), transform .7s var(--ease); will-change: opacity, transform; }
.reveal.is-visible { opacity: 1; transform: none; }
@media (prefers-reduced-motion: reduce) { .reveal { opacity: 1; transform: none; transition: none; } }