:root {
  
  --c-bg:        #f5f2eb;
  --c-fg:        #1a1f1b;
  --c-muted:     #7a8072;
  --c-accent:    #2d5a3d;
  --c-accent-lt: #4a7c5f;
  --c-light:     #ece9e0;
  --c-dark:      #1a1f1b;
  --c-dark-2:    #232a25;
  --c-border:    #d4cebc;

  --space-1: 0.5rem;
  --space-2: 1rem;
  --space-3: 1.5rem;
  --space-4: 2.5rem;
  --space-5: 4rem;
  --space-6: 7rem;

  --radius-sm: 2px;
  --radius-md: 6px;
  --radius-lg: 12px;

  --font-display: 'Noto Serif JP', 'Times New Roman', serif;
  --font-body:    'Noto Sans JP', 'Helvetica Neue', Arial, sans-serif;

  --z-base:    0;
  --z-nav:     10;
  --z-overlay: 100;
  --z-top:     1000;
}

@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; }
}

*, *::before, *::after { box-sizing: border-box; margin: 0; padding: 0; }
html { font-size: 16px; scroll-behavior: smooth; background: var(--c-bg); }
body {
  font-family: var(--font-body);
  color: var(--c-fg);
  background: var(--c-bg);
  line-height: 1.6;
  font-size: 1rem;
  -webkit-font-smoothing: antialiased;
}
img, svg { display: block; max-width: 100%; }

a:focus-visible, button:focus-visible, input:focus-visible, select:focus-visible, textarea:focus-visible {
  outline: 3px solid var(--c-accent);
  outline-offset: 2px;
}
button:focus-visible { outline-offset: -1px; }
a { color: inherit; text-decoration: none; }
ul, ol { list-style: none; }
button { cursor: pointer; font-family: inherit; }

h1, h2, h3, h4 { font-family: var(--font-display); font-weight: 700; line-height: 1.2; color: var(--c-fg); }
h1 { font-size: clamp(2.4rem, 5vw, 4.2rem); }
h2 { font-size: clamp(1.8rem, 3.5vw, 2.8rem); }
h3 { font-size: clamp(1.2rem, 2vw, 1.6rem); }
h4 { font-size: 1.1rem; }
p { margin-bottom: var(--space-2); line-height: 1.75; }

.label {
  display: inline-block;
  font-size: 0.75rem;
  font-family: var(--font-body);
  text-transform: uppercase;
  letter-spacing: 0.1em;
  font-weight: 600;
  color: var(--c-accent);
  margin-bottom: var(--space-1);
}

small, .caption, figcaption { font-size: 0.875rem; color: var(--c-muted); }
p  { font-size: clamp(0.95rem, 1.2vw, 1.05rem); color: var(--c-fg); line-height: 1.7; }
.label {
  font-family: var(--font-body);
  font-size: 0.72rem;
  letter-spacing: 0.16em;
  text-transform: uppercase;
  color: var(--c-accent);
  font-weight: 600;
}

.container {
  width: 100%;
  max-width: 1200px;
  margin-inline: auto;
  padding-inline: var(--space-4);
}
.container--wide { max-width: 1440px; }
.grid-2 { display: grid; grid-template-columns: 1fr 1fr; gap: var(--space-4); }
.grid-3 { display: grid; grid-template-columns: repeat(3, 1fr); gap: var(--space-4); }
.grid-4 { display: grid; grid-template-columns: repeat(4, 1fr); gap: var(--space-3); }

.img-placeholder {
  background: var(--c-border);
  width: 100%;
  display: block;
  border-radius: var(--radius-sm);
}

.btn {
  display: inline-block;
  padding: 0.75rem 2rem;
  font-family: var(--font-body);
  font-size: 0.85rem;
  letter-spacing: 0.1em;
  text-transform: uppercase;
  font-weight: 600;
  border-radius: var(--radius-sm);
  border: none;
}
.btn-primary {
  background: var(--c-accent);
  color: #f5f2eb;
}
.btn-primary:hover { background: var(--c-accent-lt); }
.btn-outline {
  background: transparent;
  border: 1.5px solid var(--c-accent);
  color: var(--c-accent);
}
.btn-outline:hover { background: var(--c-accent); color: #f5f2eb; }
.btn-ghost {
  background: transparent;
  border: 1.5px solid var(--c-border);
  color: var(--c-fg);
}
.btn-ghost:hover { border-color: var(--c-accent); color: var(--c-accent); }
.btn-light {
  background: var(--c-bg);
  color: var(--c-fg);
}
.btn-light:hover { background: var(--c-light); }

.site-header {
  position: sticky;
  top: 0;
  z-index: var(--z-nav);
  background: var(--c-bg);
  border-bottom: 1px solid var(--c-border);
  padding: var(--space-2) 0;
}
.site-header .container {
  display: flex;
  align-items: center;
  gap: var(--space-2);
}
.site-logo {
  display: flex;
  align-items: center;
  gap: 0.6rem;
  text-decoration: none;
}
.site-logo img, .site-logo svg { width: 38px; height: 38px; }
.site-logo-name {
  font-family: var(--font-display);
  font-size: 1.25rem;
  font-weight: 700;
  color: var(--c-fg);
  letter-spacing: 0.02em;
}

.site-footer {
  background: var(--c-dark);
  color: #c8cfc0;
  padding: var(--space-5) 0 var(--space-3);
}
.site-footer .container {
  display: grid;
  grid-template-columns: 1.5fr 1fr 1fr 1fr;
  gap: var(--space-4);
  padding-bottom: var(--space-4);
  border-bottom: 1px solid #2e3830;
}
.footer-brand-name {
  font-family: var(--font-display);
  font-size: 1.15rem;
  color: #f5f2eb;
  margin-bottom: var(--space-2);
}
.footer-desc {
  font-size: 0.88rem;
  line-height: 1.65;
  color: #8a9488;
  margin-bottom: var(--space-3);
}
.footer-col h4 {
  font-size: 0.72rem;
  letter-spacing: 0.14em;
  text-transform: uppercase;
  color: #f5f2eb;
  margin-bottom: var(--space-2);
  font-family: var(--font-body);
}
.footer-col a {
  display: block;
  font-size: 0.88rem;
  color: #8a9488;
  margin-bottom: 0.45rem;
}
.footer-col a:hover { color: #c8cfc0; }
.footer-bottom {
  padding-top: var(--space-3);
  font-size: 0.78rem;
  color: #4a5445;
  text-align: center;
}

.section { padding: var(--space-6) 0; }
.section--dark { background: var(--c-dark); }
.section--dark h1,
.section--dark h2,
.section--dark h3,
.section--dark h4 { color: #f5f2eb; }
.section--dark p   { color: #8a9488; }
.section--dark .label { color: #4a7c5f; }
.section--mid { background: var(--c-light); }
.section-header { 
  margin-bottom: var(--space-4);
  text-align: center;
  margin-inline: auto;
  max-width: 580px;
  position: relative;
}
.section-header::before {
  content: "";
  display: block;
  width: 40px;
  height: 3px;
  background: var(--c-accent);
  margin: 0 auto var(--space-2);
  border-radius: 2px;
}
.section-header .label { 
  display: block;
  margin-bottom: var(--space-1); 
}

.hero {
  display: grid;
  grid-template-columns: 1fr 1fr;
  min-height: 88vh;
  background: var(--c-dark);
}
.hero-content {
  display: flex;
  flex-direction: column;
  justify-content: center;
  padding: var(--space-6) var(--space-5) var(--space-6) var(--space-5);
}
.hero-content h1 {
  color: #f5f2eb;
  margin-bottom: var(--space-3);
  letter-spacing: -0.02em;
}
.hero-content p {
  color: #8a9488;
  max-width: 480px;
  margin-bottom: var(--space-4);
  font-size: 1.1rem;
  line-height: 1.75;
}
.hero-btns { display: flex; gap: var(--space-2); flex-wrap: wrap; align-items: center; }
.hero-image {
  position: relative;
  overflow: hidden;
}
.hero-image .img-placeholder {
  width: 100%;
  height: 100%;
  object-fit: cover;
}
.hero-issue {
  position: absolute;
  bottom: var(--space-3);
  left: var(--space-3);
  background: var(--c-accent);
  color: #f5f2eb;
  padding: 0.4rem 0.9rem;
  font-size: 0.72rem;
  letter-spacing: 0.12em;
  text-transform: uppercase;
  font-family: var(--font-body);
}

.intro-block {
  max-width: 740px;
  margin-inline: auto;
  text-align: center;
}
.intro-block h2 { margin-bottom: var(--space-3); }
.intro-block p  { margin-bottom: var(--space-3); }

.feature-card {
  display: flex;
  flex-direction: column;
  gap: var(--space-2);
  padding: var(--space-3);
  border: 1px solid var(--c-border);
  border-radius: var(--radius-md);
  text-align: left;
  transition: all 0.3s ease;
}
.feature-card:hover { border-color: var(--c-accent); box-shadow: 0 4px 12px rgba(45,90,61,0.08); }
.feature-icon {
  width: 56px;
  height: 56px;
  background: var(--c-light);
  border-radius: var(--radius-md);
  display: flex;
  align-items: center;
  justify-content: center;
}
.feature-icon svg { width: 24px; height: 24px; stroke: var(--c-accent); fill: none; stroke-width: 1.8; }

.steps-list { counter-reset: step; display: flex; flex-direction: column; gap: var(--space-3); }
.step { display: grid; grid-template-columns: 3.5rem 1fr; gap: var(--space-3); align-items: start; }
.step-num {
  width: 3rem;
  height: 3rem;
  border: 1.5px solid var(--c-accent);
  border-radius: 50%;
  display: flex;
  align-items: center;
  justify-content: center;
  font-family: var(--font-display);
  font-size: 1rem;
  color: var(--c-accent);
}
.step-body h3 { margin-bottom: 0.4rem; }

.product-card {
  display: flex;
  flex-direction: column;
  border-radius: var(--radius-md);
  overflow: hidden;
  box-shadow: 0 2px 16px rgba(0,0,0,0.07);
  background: var(--c-bg);
  border: 1px solid var(--c-border);
  text-align: left;
}
.product-card .img-placeholder { aspect-ratio: 4/3; }
.product-card-body { padding: var(--space-2) var(--space-2) var(--space-3); display: flex; flex-direction: column; gap: var(--space-1); flex: 1; }
.product-card-body h3 { font-size: 1.05rem; }
.product-card-body p { font-size: 0.88rem; color: var(--c-muted); }
.product-price {
  font-family: var(--font-display);
  font-size: 1.2rem;
  color: var(--c-accent);
  margin-top: auto;
}
.product-cta { margin-top: var(--space-2); }

.benefits-grid {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 0;
}
.benefits-image { position: relative; aspect-ratio: 9/10; }
.benefits-image .img-placeholder { width: 100%; height: 100%; border-radius: 0; object-fit: cover; }
.benefits-content {
  padding: var(--space-5);
  display: flex;
  flex-direction: column;
  justify-content: center;
  gap: var(--space-3);
  background: var(--c-dark);
}
.benefit-item { display: flex; gap: var(--space-2); align-items: flex-start; }
.benefit-icon {
  width: 40px;
  height: 40px;
  min-width: 40px;
  background: rgba(45, 90, 61, 0.3);
  border-radius: var(--radius-sm);
  display: flex;
  align-items: center;
  justify-content: center;
}
.benefit-icon svg { width: 20px; height: 20px; stroke: #4a7c5f; fill: none; stroke-width: 1.8; }
.benefit-item h4 { color: #f5f2eb; margin-bottom: 0.25rem; font-size: 1rem; }
.benefit-item p  { color: #8a9488; font-size: 0.88rem; }

.metrics-grid {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 0;
  border: 1px solid var(--c-border);
  border-radius: var(--radius-md);
  overflow: hidden;
}
.metric-item {
  padding: var(--space-4) var(--space-3);
  text-align: center;
  border-right: 1px solid var(--c-border);
}
.metric-item:last-child { border-right: none; }
.metric-num {
  font-family: var(--font-display);
  font-size: clamp(2rem, 4vw, 3rem);
  color: var(--c-accent);
  line-height: 1;
  margin-bottom: 0.5rem;
}
.metric-label { font-size: 0.82rem; color: var(--c-muted); }

.testimonial-card {
  background: var(--c-bg);
  border: 1px solid var(--c-border);
  border-radius: var(--radius-md);
  padding: var(--space-3);
  box-shadow: 0 2px 12px rgba(0,0,0,0.05);
  text-align: left;
}
.testimonial-quote {
  font-family: var(--font-display);
  font-size: 1.05rem;
  line-height: 1.7;
  color: var(--c-fg);
  margin-bottom: var(--space-2);
}
.testimonial-author { display: flex; align-items: center; gap: var(--space-2); }
.author-avatar { width: 44px; height: 44px; background: var(--c-border); border-radius: 50%; }
.author-info { display: flex; flex-direction: column; }
.author-name { font-weight: 600; font-size: 0.88rem; }
.author-role { font-size: 0.78rem; color: var(--c-muted); }

.faq-item {
  border-bottom: 1px solid var(--c-border);
  padding: var(--space-3) 0;
}
.faq-q {
  font-family: var(--font-display);
  font-size: 1.05rem;
  color: var(--c-fg);
  margin-bottom: 0.75rem;
}
.faq-a { font-size: 0.93rem; color: var(--c-muted); }

.partners-row {
  display: flex;
  align-items: center;
  justify-content: center;
  gap: var(--space-4);
  flex-wrap: wrap;
}
.partner-logo {
  width: 120px;
  height: 44px;
  background: var(--c-border);
  border-radius: var(--radius-sm);
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 0.8rem;
  color: var(--c-muted);
  letter-spacing: 0.08em;
}

.blog-card {
  display: flex;
  flex-direction: column;
  gap: var(--space-2);
  text-align: left;
}
.blog-card .img-placeholder { aspect-ratio: 16/9; border-radius: var(--radius-md); }
.blog-meta { font-size: 0.78rem; color: var(--c-muted); }
.blog-card h3 { font-size: 1.05rem; }
.blog-card p  { font-size: 0.88rem; color: var(--c-muted); }

.contacts-grid {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: var(--space-5);
  align-items: start;
}
.contacts-info { display: flex; flex-direction: column; gap: var(--space-3); }
.contact-row { display: flex; align-items: flex-start; gap: var(--space-2); }
.contact-icon {
  width: 40px;
  height: 40px;
  min-width: 40px;
  background: var(--c-light);
  border-radius: var(--radius-sm);
  display: flex;
  align-items: center;
  justify-content: center;
}
.contact-icon svg { width: 20px; height: 20px; stroke: var(--c-accent); fill: none; stroke-width: 1.8; }
.contact-text strong { display: block; font-size: 0.78rem; letter-spacing: 0.1em; text-transform: uppercase; color: var(--c-muted); margin-bottom: 0.25rem; }
.contact-text a, .contact-text p { font-size: 0.95rem; color: var(--c-fg); }

.contact-form { display: flex; flex-direction: column; gap: var(--space-2); }
.form-row { display: grid; grid-template-columns: 1fr 1fr; gap: var(--space-2); }
.form-field { display: flex; flex-direction: column; gap: 0.35rem; }
.form-field label { font-size: 0.78rem; text-transform: uppercase; letter-spacing: 0.1em; color: var(--c-muted); }
.form-field input,
.form-field textarea,
.form-field select {
  background: var(--c-bg);
  border: 1px solid var(--c-border);
  border-radius: var(--radius-sm);
  padding: 0.65rem var(--space-2);
  font-family: var(--font-body);
  font-size: 0.93rem;
  color: var(--c-fg);
  outline: none;
}
.form-field input:focus,
.form-field textarea:focus { border-color: var(--c-accent); }
.form-field textarea { resize: vertical; min-height: 120px; }

.cookie-banner {
  position: fixed;
  bottom: 0;
  left: 0;
  right: 0;
  background: var(--c-dark-2);
  color: #c8cfc0;
  padding: var(--space-3) var(--space-4);
  z-index: var(--z-top);
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: var(--space-3);
  border-top: 2px solid var(--c-accent);
  box-shadow: 0 -4px 16px rgba(0,0,0,0.15);
}
.cookie-banner p { font-size: 0.9rem; color: #c8cfc0; max-width: 700px; line-height: 1.5; }
.cookie-banner a { color: var(--c-accent-lt); text-decoration: underline; cursor: pointer; }
.cookie-btns { display: flex; gap: var(--space-2); flex-shrink: 0; align-items: center; }
.cookie-banner .btn { font-size: 0.9rem; padding: 0.5rem 1rem; }

.cookie-customize-panel {
  display: none;
  position: fixed;
  bottom: 80px;
  left: 50%;
  transform: translateX(-50%);
  background: var(--c-light);
  border: 1px solid var(--c-border);
  border-radius: var(--radius-lg);
  padding: var(--space-4);
  z-index: calc(var(--z-top) - 1);
  max-width: 480px;
  width: 90vw;
  box-shadow: 0 8px 32px rgba(0,0,0,0.2);
}
.cookie-customize-panel.active { display: block; }
.cookie-customize-panel h3 { font-family: var(--font-display); font-size: 1.2rem; margin-bottom: var(--space-2); color: var(--c-dark); }
.cookie-category {
  display: flex;
  align-items: flex-start;
  gap: var(--space-2);
  margin-bottom: var(--space-3);
  padding-bottom: var(--space-3);
  border-bottom: 1px solid var(--c-border);
}
.cookie-category:last-child { border-bottom: none; margin-bottom: var(--space-2); }
.cookie-category input[type="checkbox"] { 
  margin-top: 0.25rem; 
  cursor: pointer;
  accent-color: var(--c-accent);
}
.cookie-category label {
  flex: 1;
  cursor: pointer;
}
.cookie-category-name { font-weight: 600; color: var(--c-dark); margin-bottom: 0.25rem; display: block; }
.cookie-category-desc { font-size: 0.85rem; color: var(--c-muted); }

.cookie-customize-btns {
  display: flex;
  gap: var(--space-2);
  margin-top: var(--space-3);
  justify-content: flex-end;
}

.showcase-grid {
  display: grid;
  grid-template-columns: 1fr 1fr;
  grid-template-rows: auto auto;
  gap: var(--space-3);
}
.showcase-main { grid-row: 1 / 3; position: relative; aspect-ratio: 9/16; }
.showcase-main .img-placeholder { width: 100%; height: 100%; border-radius: var(--radius-md); }
.showcase-sub { position: relative; }
.showcase-sub .img-placeholder { aspect-ratio: 3/2; width: 100%; border-radius: var(--radius-md); }
.showcase-overlay {
  position: absolute;
  bottom: var(--space-2);
  left: var(--space-2);
  right: var(--space-2);
  background: rgba(26, 31, 27, 0.72);
  padding: var(--space-2);
  border-radius: var(--radius-sm);
}
.showcase-overlay span {
  color: #f5f2eb;
  font-size: 0.85rem;
  font-family: var(--font-display);
}

.divider {
  width: 48px;
  height: 2px;
  background: var(--c-accent);
  margin: var(--space-2) 0;
}

@media (max-width: 1024px) {
  :root { --space-5: 3rem; --space-6: 4.5rem; }
  .hero { grid-template-columns: 1fr; min-height: auto; }
  .hero-image { 
  height: 100%; }
  .hero-content { padding: var(--space-4); }
  .grid-3, .grid-4 { grid-template-columns: 1fr 1fr; }
  .metrics-grid { grid-template-columns: 1fr 1fr; }
  .metric-item:nth-child(2) { border-right: none; }
  .metric-item:nth-child(3) { border-top: 1px solid var(--c-border); border-right: 1px solid var(--c-border); }
  .site-footer .container { grid-template-columns: 1fr 1fr; }
  .showcase-grid { grid-template-columns: 1fr; }
  .showcase-main { grid-row: auto; }
  .benefits-grid { grid-template-columns: 1fr; }
  .benefits-image { display: none; }
}

@media (max-width: 640px) {
  :root { --space-4: 1.75rem; --space-5: 2.5rem; --space-6: 3.5rem; }
  .container { padding-inline: var(--space-2); }
  .grid-2, .grid-3, .grid-4 { grid-template-columns: 1fr; }
  .hero { min-height: auto; }
  .hero-content { padding: var(--space-4) var(--space-2); }
  .hero-btns { flex-direction: column; }
  .hero-image { display: none; }
  .form-row { grid-template-columns: 1fr; }
  .metrics-grid { grid-template-columns: 1fr 1fr; }
  .site-footer .container { grid-template-columns: 1fr; }
  .contacts-grid { grid-template-columns: 1fr; }
  .cookie-banner { flex-direction: column; align-items: flex-start; padding: var(--space-3) var(--space-2); }
  .cookie-btns { width: 100%; flex-direction: column; }
  .cookie-banner .btn { width: 100%; }
  .cookie-customize-panel { bottom: auto; top: 50%; transform: translate(-50%, -50%); max-width: 95vw; width: 95vw; }
}

.benefit-icon { color: #ffffff !important; }
.showcase-overlay { color: #ffffff !important; }

.hero-image img,
.product-card img {
  width: 100%;
  height: 100%;
  object-fit: cover;
  display: block;
}

/* === contrast-fix 2026-06-16 (runtime-verified) === */
/* .btn-ghost is dual-zone: dark text is correct on light article sections; only
   the dark-background instances (hero + cookie banner) need light text. */
.hero .btn-ghost,
.cookie-banner .btn-ghost,
#cookie-banner .btn-ghost { color: #ece7dd !important; border-color: rgba(236,231,221,0.5) !important; }
.hero .btn-ghost:hover,
.cookie-banner .btn-ghost:hover,
#cookie-banner .btn-ghost:hover { color: var(--c-accent) !important; border-color: var(--c-accent) !important; }