:root {
  --c-bg: #f8f9fa;
  --c-fg: #1a2332;
  --c-muted: #8b9aaa;
  --c-accent: #4a7c94;
  --c-accent-light: #e8f0f6;
  --c-border: #d4dce5;
  
  --space-1: 0.5rem;
  --space-2: 1rem;
  --space-3: 1.5rem;
  --space-4: 2rem;
  --space-5: 3rem;
  --space-6: 4rem;
  
  --radius-sm: 0.375rem;
  --radius-md: 0.5rem;
  --radius-lg: 0.75rem;
  
  --font-display: 'Noto Sans JP', -apple-system, BlinkMacSystemFont, 'Segoe UI', sans-serif;
  --font-body: 'Noto Sans JP', -apple-system, BlinkMacSystemFont, 'Segoe UI', sans-serif;
}

*,
*::before,
*::after {
  margin: 0;
  padding: 0;
  box-sizing: border-box;
}

html,
body {
  background-color: var(--c-bg);
  color: var(--c-fg);
  font-family: var(--font-body);
  line-height: 1.6;
}

@media (max-width: 640px) {
  :root {
    --text-base: 1rem;
    --text-lg: 1.125rem;
    --text-xl: 1.25rem;
    --text-2xl: 1.5rem;
    --text-3xl: 1.875rem;
  }
}

@media (min-width: 641px) and (max-width: 1024px) {
  :root {
    --text-base: 1rem;
    --text-lg: 1.125rem;
    --text-xl: 1.375rem;
    --text-2xl: 1.75rem;
    --text-3xl: 2.25rem;
  }
}

@media (min-width: 1025px) {
  :root {
    --text-base: 1.0625rem;
    --text-lg: 1.25rem;
    --text-xl: 1.5rem;
    --text-2xl: 2rem;
    --text-3xl: 2.625rem;
  }
}

h1,
h2,
h3,
h4,
h5,
h6 {
  font-family: var(--font-display);
  font-weight: 700;
  letter-spacing: -0.02em;
}

h1 {
  font-size: var(--text-3xl);
  line-height: 1.2;
}

h2 {
  font-size: var(--text-2xl);
  line-height: 1.3;
  margin-bottom: var(--space-4);
}

h3 {
  font-size: var(--text-xl);
  line-height: 1.4;
  margin-bottom: var(--space-3);
}

h4,
h5,
h6 {
  font-size: var(--text-lg);
  margin-bottom: var(--space-2);
}

p {
  font-size: var(--text-base);
  margin-bottom: var(--space-3);
}

a {
  color: var(--c-accent);
  text-decoration: none;
}

a:hover {
  text-decoration: underline;
}

header {
  background-color: var(--c-bg);
  border-bottom: 1px solid var(--c-border);
  padding: var(--space-3) var(--space-4);
  position: sticky;
  top: 0;
  z-index: 100;
}

.header-container {
  display: flex;
  align-items: center;
  gap: var(--space-3);
  max-width: 1400px;
  margin: 0 auto;
}

.logo {
  width: 40px;
  height: 40px;
  flex-shrink: 0;
}

.brand-name {
  font-size: var(--text-lg);
  font-weight: 700;
  color: var(--c-fg);
}

main {
  max-width: 1400px;
  margin: 0 auto;
  padding: 0 var(--space-4);
}

.hero {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: var(--space-6);
  align-items: center;
  padding: var(--space-6) 0;
}

.hero-content h1 {
  margin-bottom: var(--space-3);
  color: var(--c-fg);
}

.hero-content p {
  font-size: var(--text-lg);
  color: var(--c-muted);
  margin-bottom: var(--space-4);
}

.hero-image {
  background-color: var(--c-accent-light);
  border-radius: var(--radius-lg);
  aspect-ratio: 1;
  display: flex;
  align-items: center;
  justify-content: center;
  color: var(--c-muted);
  font-size: var(--text-lg);
}

@media (max-width: 1024px) {
  .hero {
    grid-template-columns: 1fr;
    gap: var(--space-4);
    padding: var(--space-5) 0;
  }

  .hero-image {
    aspect-ratio: auto;
    min-height: 300px;
  }
}

.btn {
  display: inline-block;
  padding: var(--space-2) var(--space-4);
  background-color: var(--c-accent);
  color: #fff;
  border-radius: var(--radius-md);
  font-size: var(--text-base);
  font-weight: 600;
  border: none;
  cursor: pointer;
  transition: none;
  text-decoration: none;
}

.btn:hover {
  background-color: #3a6c84;
  text-decoration: none;
}

.btn-secondary {
  background-color: transparent;
  color: var(--c-accent);
  border: 1px solid var(--c-accent);
}

.btn-secondary:hover {
  background-color: var(--c-accent-light);
  text-decoration: none;
}

.grid-section {
  padding: var(--space-6) 0;
  border-top: 1px solid var(--c-border);
}

.grid-section h2 {
  text-align: center;
  margin-bottom: var(--space-5);
}

.grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(250px, 1fr));
  gap: var(--space-4);
}

@media (min-width: 1025px) {
  .grid-section.features-grid .grid {
    grid-template-columns: repeat(3, 1fr);
  }

  .grid-section.how-it-works .grid {
    grid-template-columns: repeat(4, 1fr);
  }

  .grid-section.testimonials .grid {
    grid-template-columns: repeat(2, 1fr);
  }
}

@media (max-width: 1024px) {
  .grid-section.features-grid .grid {
    grid-template-columns: repeat(2, 1fr);
  }

  .grid-section.how-it-works .grid {
    grid-template-columns: repeat(2, 1fr);
  }

  .grid-section.testimonials .grid {
    grid-template-columns: 1fr;
  }
}

@media (max-width: 640px) {
  .grid-section.features-grid .grid,
  .grid-section.how-it-works .grid,
  .grid-section.testimonials .grid {
    grid-template-columns: 1fr;
  }
}

.card {
  background-color: #fff;
  border-radius: var(--radius-lg);
  padding: var(--space-4);
  box-shadow: 0 2px 8px rgba(26, 35, 50, 0.08);
  transition: none;
}

.card-image {
  background-color: var(--c-accent-light);
  border-radius: var(--radius-md);
  aspect-ratio: 1;
  margin-bottom: var(--space-3);
  display: flex;
  align-items: center;
  justify-content: center;
  color: var(--c-muted);
  font-size: var(--text-lg);
}

.card h3 {
  margin-bottom: var(--space-2);
  color: var(--c-fg);
}

.card p {
  color: var(--c-muted);
  margin-bottom: var(--space-3);
  font-size: var(--text-base);
}

.card-meta {
  display: flex;
  justify-content: space-between;
  align-items: center;
  margin-top: var(--space-3);
  font-size: 0.875rem;
  color: var(--c-muted);
}

.card-price {
  font-size: var(--text-xl);
  font-weight: 700;
  color: var(--c-accent);
}

.section-light {
  background-color: var(--c-bg);
}

.section-dark {
  background-color: #fff;
}

.metrics {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(150px, 1fr));
  gap: var(--space-4);
  text-align: center;
  padding: var(--space-6) 0;
}

.metric {
  padding: var(--space-4);
}

.metric-value {
  font-size: var(--text-3xl);
  font-weight: 700;
  color: var(--c-accent);
  margin-bottom: var(--space-1);
}

.metric-label {
  font-size: var(--text-base);
  color: var(--c-muted);
}

.accordion-item {
  border-bottom: 1px solid var(--c-border);
  padding: var(--space-3) 0;
}

.accordion-item:last-child {
  border-bottom: none;
}

.accordion-header {
  background-color: transparent;
  border: none;
  cursor: pointer;
  padding: var(--space-2) 0;
  text-align: left;
  font-size: var(--text-lg);
  font-weight: 600;
  color: var(--c-fg);
  width: 100%;
  display: flex;
  justify-content: space-between;
  align-items: center;
}

.accordion-header::after {
  content: '+';
  font-size: var(--text-lg);
  font-weight: 700;
  color: var(--c-accent);
}

.accordion-item.open .accordion-header::after {
  content: '−';
}

.accordion-content {
  display: none;
  padding: var(--space-3) 0;
  color: var(--c-muted);
}

.accordion-item.open .accordion-content {
  display: block;
}

footer {
  background-color: var(--c-fg);
  color: #fff;
  padding: var(--space-6) var(--space-4);
  margin-top: var(--space-6);
  border-top: 1px solid var(--c-border);
}

.footer-container {
  max-width: 1400px;
  margin: 0 auto;
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(250px, 1fr));
  gap: var(--space-5);
  margin-bottom: var(--space-5);
}

.footer-section h4 {
  color: #fff;
  margin-bottom: var(--space-2);
}

.footer-section p,
.footer-section a {
  font-size: 0.9375rem;
  color: rgba(255, 255, 255, 0.8);
  margin-bottom: var(--space-1);
}

.footer-section a:hover {
  color: #fff;
}

.footer-bottom {
  border-top: 1px solid rgba(255, 255, 255, 0.2);
  padding-top: var(--space-4);
  text-align: center;
  font-size: 0.875rem;
  color: rgba(255, 255, 255, 0.7);
}

.text-center {
  text-align: center;
}

.mt-1 { margin-top: var(--space-1); }
.mt-2 { margin-top: var(--space-2); }
.mt-3 { margin-top: var(--space-3); }
.mt-4 { margin-top: var(--space-4); }
.mt-5 { margin-top: var(--space-5); }
.mt-6 { margin-top: var(--space-6); }

.mb-1 { margin-bottom: var(--space-1); }
.mb-2 { margin-bottom: var(--space-2); }
.mb-3 { margin-bottom: var(--space-3); }
.mb-4 { margin-bottom: var(--space-4); }
.mb-5 { margin-bottom: var(--space-5); }
.mb-6 { margin-bottom: var(--space-6); }

.py-5 { padding: var(--space-5) 0; }
.py-6 { padding: var(--space-6) 0; }

.footer-section { padding: 80px 0; }

.cookie-btn { color: #111111 !important; }
.accept { color: #111111 !important; }
.label-desc { color: #111111 !important; }
.cookie-modal-btn { color: #111111 !important; }
.save { color: #111111 !important; }

@media (prefers-reduced-motion: reduce) {
  *, *::before, *::after { animation-duration: 0.01ms !important; animation-iteration-count: 1 !important; transition-duration: 0.01ms !important; scroll-behavior: auto !important; }
}

a:focus-visible, button:focus-visible, input:focus-visible, textarea:focus-visible, select:focus-visible, [tabindex]:focus-visible { outline: 2px solid currentColor; outline-offset: 2px; }

/* === Liven up: imagery + motion === */

.media {
  position: relative;
  overflow: hidden;
  border-radius: var(--radius-lg);
  background: var(--c-accent-light);
  box-shadow: 0 10px 30px rgba(26,35,50,0.10);
}

.media img {
  width: 100%;
  height: 100%;
  display: block;
  object-fit: cover;
  transform: scale(1);
  transition: transform 700ms cubic-bezier(.2,.7,.2,1), filter 500ms ease;
  will-change: transform;
}

.media.ratio-1   { aspect-ratio: 1 / 1; }
.media.ratio-4-3 { aspect-ratio: 4 / 3; }
.media.ratio-3-2 { aspect-ratio: 3 / 2; }
.media.ratio-hero{ aspect-ratio: 5 / 4; }

.media::after {
  content: "";
  position: absolute;
  inset: 0;
  background: linear-gradient(135deg, rgba(74,124,148,0.18) 0%, rgba(74,124,148,0) 55%);
  pointer-events: none;
}

.media:hover img { transform: scale(1.04); filter: saturate(1.05); }

/* Hero background polish */
section.section-light:first-of-type {
  background: radial-gradient(1100px 480px at 12% -10%, #e8f0f6 0%, transparent 60%),
              radial-gradient(900px 420px at 105% 110%, #e8f0f6 0%, transparent 55%),
              var(--c-bg);
}

/* Cards: gentle lift on hover */
.card {
  transition: transform 300ms cubic-bezier(.2,.7,.2,1),
              box-shadow 300ms ease,
              border-color 300ms ease;
}
.card:hover {
  transform: translateY(-4px);
  box-shadow: 0 14px 32px rgba(26, 35, 50, 0.12);
}

/* Buttons: lift + glow */
.btn {
  transition: transform 200ms ease, background-color 200ms ease, box-shadow 250ms ease;
  box-shadow: 0 4px 14px rgba(74,124,148,0.18);
}
.btn:hover { transform: translateY(-2px); box-shadow: 0 10px 22px rgba(74,124,148,0.28); }
.btn:active { transform: translateY(0); }

/* Reveal-on-scroll */
.reveal {
  opacity: 0;
  transform: translateY(18px);
  transition: opacity 700ms ease, transform 700ms cubic-bezier(.2,.7,.2,1);
  will-change: opacity, transform;
}
.reveal.in { opacity: 1; transform: none; }
.reveal.delay-1 { transition-delay: 80ms; }
.reveal.delay-2 { transition-delay: 160ms; }
.reveal.delay-3 { transition-delay: 240ms; }
.reveal.delay-4 { transition-delay: 320ms; }

/* Logo subtle float */
.logo { animation: floaty 6s ease-in-out infinite; }
@keyframes floaty {
  0%,100% { transform: translateY(0); }
  50%     { transform: translateY(-2px); }
}

/* Section accent rule */
.section-dark { position: relative; }
.section-dark::before {
  content:"";
  position:absolute;
  top:0; left:50%; transform: translateX(-50%);
  width: 64px; height: 3px;
  background: var(--c-accent);
  border-radius: 999px;
  opacity: .25;
}

/* Stat numbers gradient */
[style*="font-size: clamp(2.5rem, 5vw, 4rem)"] {
  background: linear-gradient(135deg, var(--c-accent) 0%, #2f5a70 100%);
  -webkit-background-clip: text;
  background-clip: text;
  -webkit-text-fill-color: transparent;
}

/* Accordion smooth */
.accordion-content { transition: opacity 250ms ease; }
.accordion-header { transition: color 200ms ease; }
.accordion-header:hover { color: var(--c-accent); }

@media (prefers-reduced-motion: reduce) {
  .reveal { opacity: 1; transform: none; }
  .media img { transition: none; }
  .logo { animation: none; }
}