:root {
  --bg-main: #0e0c0a;
  --bg-card: #171411;
  --bg-elevated: #211d18;
  --border-subtle: #362f28;
  --accent-terra: #d97706;
  --accent-terra-hover: #f59e0b;
  --accent-shino: #fde68a;
  --accent-celadon: #10b981;
  --text-primary: #faf7f2;
  --text-secondary: #a8a096;
  --radius-md: 12px;
  --radius-lg: 18px;
  --max-w: 1200px;
}

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

html {
  scroll-behavior: smooth;
  overflow-x: hidden;
  background-color: var(--bg-main);
  color: var(--text-primary);
  font-family: "Hiragino Kaku Gothic ProN", "Hiragino Sans", "Yu Gothic", "Meiryo", system-ui, -apple-system, sans-serif;
  line-height: 1.75;
}

body {
  overflow-x: hidden;
  min-height: 100vh;
  display: flex;
  flex-direction: column;
}

img {
  max-width: 100%;
  height: auto;
  display: block;
  object-fit: cover;
}

a {
  color: var(--accent-terra-hover);
  text-decoration: none;
  transition: color 0.2s ease, background-color 0.2s ease, transform 0.15s ease;
}

a:hover {
  color: var(--accent-shino);
}

.container {
  width: 100%;
  max-width: var(--max-w);
  margin: 0 auto;
  padding: 0 1.25rem;
}

/* Header & Navigation */
.site-header {
  position: sticky;
  top: 0;
  z-index: 100;
  background: rgba(14, 12, 10, 0.92);
  backdrop-filter: blur(12px);
  border-bottom: 1px solid var(--border-subtle);
}

.header-inner {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  justify-content: space-between;
  gap: 0.75rem;
  padding: 0.85rem 0;
}

.brand-link {
  display: inline-flex;
  align-items: center;
  gap: 0.75rem;
  color: var(--text-primary);
  font-weight: 800;
  font-size: 1.18rem;
  letter-spacing: 0.05em;
  min-height: 48px;
}

.brand-logo {
  width: 42px;
  height: 42px;
  aspect-ratio: 1 / 1;
  border-radius: 10px;
}

.brand-badge {
  font-size: 0.72rem;
  font-weight: 600;
  color: var(--accent-terra-hover);
  display: block;
  letter-spacing: 0.04em;
}

.main-nav {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  gap: 0.35rem;
}

.nav-link {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  min-height: 48px;
  padding: 0.45rem 0.8rem;
  color: var(--text-primary);
  font-size: 0.9rem;
  font-weight: 600;
  border-radius: 8px;
}

.nav-link:hover {
  background: var(--bg-elevated);
  color: var(--accent-terra-hover);
}

.btn-primary {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 0.5rem;
  min-height: 48px;
  padding: 0.75rem 1.35rem;
  background: var(--accent-terra-hover);
  color: #0e0c0a;
  font-weight: 800;
  font-size: 0.95rem;
  border-radius: var(--radius-md);
  border: none;
  cursor: pointer;
  text-align: center;
}

.btn-primary:hover {
  background: var(--accent-shino);
  color: #0e0c0a;
  transform: translateY(-1px);
}

.btn-secondary {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 0.5rem;
  min-height: 48px;
  padding: 0.75rem 1.3rem;
  background: var(--bg-elevated);
  color: var(--text-primary);
  font-weight: 700;
  font-size: 0.92rem;
  border-radius: var(--radius-md);
  border: 1px solid var(--border-subtle);
  cursor: pointer;
  text-align: center;
}

.btn-secondary:hover {
  border-color: var(--accent-terra-hover);
  color: var(--accent-terra-hover);
}

/* Hero Section */
.hero-section {
  padding: 3rem 0 3.5rem;
  border-bottom: 1px solid var(--border-subtle);
  background: radial-gradient(circle at 80% 18%, rgba(245, 158, 11, 0.13), transparent 55%);
}

.hero-grid {
  display: grid;
  grid-template-columns: 1fr;
  gap: 2.25rem;
  align-items: center;
}

.eyebrow {
  display: inline-flex;
  align-items: center;
  gap: 0.5rem;
  padding: 0.35rem 0.85rem;
  background: rgba(245, 158, 11, 0.12);
  border: 1px solid rgba(245, 158, 11, 0.35);
  color: var(--accent-terra-hover);
  border-radius: 999px;
  font-size: 0.8rem;
  font-weight: 700;
  margin-bottom: 1rem;
}

.hero-title {
  font-size: clamp(1.75rem, 3.8vw, 2.75rem);
  line-height: 1.3;
  font-weight: 800;
  margin-bottom: 1rem;
  color: var(--text-primary);
}

.hero-lead {
  font-size: clamp(0.96rem, 1.6vw, 1.08rem);
  color: var(--text-secondary);
  margin-bottom: 1.5rem;
}

.hero-actions {
  display: flex;
  flex-wrap: wrap;
  gap: 0.85rem;
  margin-bottom: 1.75rem;
}

.hero-metrics {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(145px, 1fr));
  gap: 0.85rem;
  padding-top: 1.25rem;
  border-top: 1px solid var(--border-subtle);
}

.metric-box {
  background: var(--bg-card);
  padding: 0.85rem 1rem;
  border-radius: var(--radius-md);
  border: 1px solid var(--border-subtle);
}

.metric-val {
  font-size: 1.2rem;
  font-weight: 800;
  color: var(--accent-terra-hover);
  display: block;
}

.metric-lbl {
  font-size: 0.8rem;
  color: var(--text-secondary);
}

.hero-img {
  width: 100%;
  aspect-ratio: 3 / 2;
  border-radius: var(--radius-lg);
  border: 1px solid var(--border-subtle);
  box-shadow: 0 20px 40px rgba(0, 0, 0, 0.6);
}

.hero-caption {
  margin-top: 0.65rem;
  display: flex;
  justify-content: space-between;
  align-items: center;
  font-size: 0.82rem;
  color: var(--text-secondary);
  background: var(--bg-card);
  padding: 0.6rem 1rem;
  border-radius: var(--radius-md);
  border: 1px solid var(--border-subtle);
}

/* Sections */
.section {
  padding: 3.5rem 0;
  border-bottom: 1px solid var(--border-subtle);
}

.section-header {
  margin-bottom: 2.25rem;
  max-width: 740px;
}

.section-title {
  font-size: clamp(1.45rem, 2.8vw, 2.05rem);
  font-weight: 800;
  line-height: 1.3;
  margin-bottom: 0.65rem;
  color: var(--text-primary);
}

.section-sub {
  color: var(--text-secondary);
  font-size: 0.96rem;
}

/* Ceramics Programs Grid */
.catalog-grid {
  display: grid;
  grid-template-columns: 1fr;
  gap: 1.5rem;
}

.service-card {
  background: var(--bg-card);
  border: 1px solid var(--border-subtle);
  border-radius: var(--radius-lg);
  overflow: hidden;
  display: flex;
  flex-direction: column;
}

.service-img {
  width: 100%;
  aspect-ratio: 16 / 10;
  border-bottom: 1px solid var(--border-subtle);
}

.service-body {
  padding: 1.4rem;
  display: flex;
  flex-direction: column;
  flex-grow: 1;
}

.service-tag {
  display: inline-block;
  align-self: flex-start;
  font-size: 0.75rem;
  font-weight: 700;
  color: var(--accent-celadon);
  background: rgba(16, 185, 129, 0.14);
  padding: 0.25rem 0.65rem;
  border-radius: 6px;
  margin-bottom: 0.65rem;
}

.service-title {
  font-size: 1.2rem;
  font-weight: 800;
  margin-bottom: 0.45rem;
}

.service-desc {
  color: var(--text-secondary);
  font-size: 0.9rem;
  margin-bottom: 1rem;
}

.spec-list {
  list-style: none;
  margin-bottom: 1.25rem;
  padding-top: 0.85rem;
  border-top: 1px solid var(--border-subtle);
  font-size: 0.85rem;
  color: var(--text-secondary);
}

.spec-list li {
  display: flex;
  justify-content: space-between;
  padding: 0.3rem 0;
}

.spec-list strong {
  color: var(--text-primary);
}

.service-footer {
  margin-top: auto;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 0.75rem;
  padding-top: 1rem;
  border-top: 1px solid var(--border-subtle);
}

.price-tag {
  font-size: 1.28rem;
  font-weight: 800;
  color: var(--accent-terra-hover);
}

.price-vat {
  display: block;
  font-size: 0.75rem;
  color: var(--text-secondary);
  font-weight: 400;
}

/* Interactive Ceramics Estimator (Zero <form> / Zero <input>) */
.selector-shell {
  background: var(--bg-card);
  border: 1px solid var(--border-subtle);
  border-radius: var(--radius-lg);
  padding: 1.5rem;
  display: grid;
  grid-template-columns: 1fr;
  gap: 1.75rem;
}

.step-group {
  margin-bottom: 1.35rem;
}

.step-group:last-child {
  margin-bottom: 0;
}

.step-label {
  font-size: 0.94rem;
  font-weight: 700;
  margin-bottom: 0.65rem;
  color: var(--text-primary);
  display: flex;
  align-items: center;
  gap: 0.5rem;
}

.step-num {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  width: 26px;
  height: 26px;
  border-radius: 50%;
  background: var(--accent-terra-hover);
  color: #0e0c0a;
  font-weight: 800;
  font-size: 0.82rem;
}

.btn-group {
  display: grid;
  grid-template-columns: 1fr;
  gap: 0.6rem;
}

.calc-btn {
  min-height: 52px;
  padding: 0.75rem 1rem;
  background: var(--bg-elevated);
  border: 1px solid var(--border-subtle);
  border-radius: var(--radius-md);
  color: var(--text-primary);
  font-family: inherit;
  font-size: 0.88rem;
  font-weight: 600;
  text-align: left;
  cursor: pointer;
  display: flex;
  align-items: center;
  justify-content: space-between;
  transition: all 0.15s ease;
}

.calc-btn:hover {
  border-color: var(--accent-terra-hover);
}

.calc-btn.is-active {
  background: rgba(245, 158, 11, 0.16);
  border-color: var(--accent-terra-hover);
  color: var(--accent-terra-hover);
}

.calc-dot {
  width: 14px;
  height: 14px;
  border-radius: 50%;
  border: 2px solid var(--text-secondary);
  flex-shrink: 0;
}

.calc-btn.is-active .calc-dot {
  border-color: var(--accent-terra-hover);
  background: var(--accent-terra-hover);
}

.result-panel {
  background: var(--bg-main);
  border: 2px solid var(--accent-terra-hover);
  border-radius: var(--radius-lg);
  padding: 1.5rem;
  display: flex;
  flex-direction: column;
  justify-content: space-between;
}

.result-badge {
  font-size: 0.78rem;
  font-weight: 700;
  color: var(--accent-terra-hover);
  margin-bottom: 0.4rem;
}

.result-model {
  font-size: 1.28rem;
  font-weight: 800;
  color: var(--text-primary);
  margin-bottom: 0.75rem;
}

.result-specs {
  display: grid;
  grid-template-columns: 1fr;
  gap: 0.65rem;
  margin-bottom: 1.25rem;
  padding: 1rem;
  background: var(--bg-card);
  border-radius: var(--radius-md);
  border: 1px solid var(--border-subtle);
}

.res-row {
  display: flex;
  justify-content: space-between;
  font-size: 0.86rem;
  gap: 0.5rem;
}

.res-row span:first-child {
  color: var(--text-secondary);
}

.res-row strong {
  color: var(--text-primary);
  text-align: right;
}

.result-price-box {
  margin-bottom: 1.25rem;
  padding: 0.9rem 1rem;
  background: rgba(16, 185, 129, 0.1);
  border: 1px solid rgba(16, 185, 129, 0.35);
  border-radius: var(--radius-md);
}

.result-price-lbl {
  font-size: 0.8rem;
  color: var(--text-secondary);
  display: block;
}

.result-price-val {
  font-size: 1.4rem;
  font-weight: 800;
  color: var(--accent-celadon);
}

/* Comparison Table */
.table-wrap {
  width: 100%;
  overflow-x: auto;
  background: var(--bg-card);
  border: 1px solid var(--border-subtle);
  border-radius: var(--radius-lg);
}

.comp-table {
  width: 100%;
  border-collapse: collapse;
  min-width: 640px;
  text-align: left;
  font-size: 0.88rem;
}

.comp-table th,
.comp-table td {
  padding: 0.95rem 1.1rem;
  border-bottom: 1px solid var(--border-subtle);
}

.comp-table th {
  background: var(--bg-elevated);
  color: var(--accent-terra-hover);
  font-weight: 700;
  font-size: 0.82rem;
}

.comp-table tr:last-child td {
  border-bottom: none;
}

/* Craft Process Grid */
.lab-grid {
  display: grid;
  grid-template-columns: 1fr;
  gap: 2rem;
  align-items: center;
}

.lab-img {
  width: 100%;
  aspect-ratio: 16 / 10;
  border-radius: var(--radius-lg);
  border: 1px solid var(--border-subtle);
}

.feature-cards {
  display: grid;
  grid-template-columns: 1fr;
  gap: 1rem;
}

.f-card {
  background: var(--bg-card);
  border: 1px solid var(--border-subtle);
  border-radius: var(--radius-md);
  padding: 1.15rem;
}

.f-card h3 {
  font-size: 1.02rem;
  font-weight: 700;
  margin-bottom: 0.35rem;
  color: var(--accent-terra-hover);
}

.f-card p {
  font-size: 0.9rem;
  color: var(--text-secondary);
}

/* Open FAQ List */
.faq-grid {
  display: grid;
  grid-template-columns: 1fr;
  gap: 1rem;
}

.faq-item {
  background: var(--bg-card);
  border: 1px solid var(--border-subtle);
  border-radius: var(--radius-md);
  padding: 1.15rem 1.35rem;
}

.faq-item summary {
  font-weight: 700;
  font-size: 1rem;
  color: var(--text-primary);
  cursor: pointer;
  min-height: 36px;
  display: flex;
  align-items: center;
}

.faq-item p {
  margin-top: 0.65rem;
  color: var(--text-secondary);
  font-size: 0.9rem;
  padding-top: 0.65rem;
  border-top: 1px solid var(--border-subtle);
}

/* Contact Block (ENABLE_FORM = OFF) */
.contact-box {
  background: linear-gradient(145deg, #241f19, #120f0c);
  border: 1px solid var(--accent-terra-hover);
  border-radius: var(--radius-lg);
  padding: 2rem 1.5rem;
  display: grid;
  grid-template-columns: 1fr;
  gap: 1.75rem;
  align-items: center;
}

.contact-steps {
  display: grid;
  grid-template-columns: 1fr;
  gap: 0.85rem;
  margin: 1.25rem 0;
}

.c-step {
  background: var(--bg-card);
  border: 1px solid var(--border-subtle);
  border-radius: var(--radius-md);
  padding: 0.9rem 1.1rem;
  font-size: 0.9rem;
}

.c-step strong {
  color: var(--accent-terra-hover);
  display: block;
  margin-bottom: 0.2rem;
}

.contact-cta-card {
  background: var(--bg-main);
  border: 1px solid var(--border-subtle);
  border-radius: var(--radius-md);
  padding: 1.5rem;
  text-align: center;
}

.email-display {
  font-size: 1.18rem;
  font-weight: 800;
  color: var(--accent-terra-hover);
  margin: 0.5rem 0 1.25rem;
  word-break: break-all;
}

/* Legal Pages */
.legal-article {
  max-width: 840px;
  margin: 0 auto;
  padding: 3rem 0;
}

.legal-article h1 {
  font-size: clamp(1.65rem, 3.2vw, 2.2rem);
  margin-bottom: 1rem;
  color: var(--accent-terra-hover);
}

.legal-article h2 {
  font-size: 1.2rem;
  margin: 1.75rem 0 0.65rem;
  color: var(--text-primary);
}

.legal-article p,
.legal-article ul {
  color: var(--text-secondary);
  margin-bottom: 1rem;
  font-size: 0.94rem;
}

.legal-article ul {
  padding-left: 1.5rem;
}

/* Footer */
.site-footer {
  margin-top: auto;
  background: #080706;
  border-top: 1px solid var(--border-subtle);
  padding: 2.5rem 0 1.75rem;
  font-size: 0.88rem;
  color: var(--text-secondary);
}

.footer-grid {
  display: grid;
  grid-template-columns: 1fr;
  gap: 1.5rem;
  margin-bottom: 1.75rem;
}

.footer-links {
  display: flex;
  flex-wrap: wrap;
  gap: 0.75rem 1.25rem;
}

.footer-links a {
  min-height: 48px;
  display: inline-flex;
  align-items: center;
  color: var(--text-secondary);
}

.footer-links a:hover {
  color: var(--accent-terra-hover);
}

.footer-bottom {
  padding-top: 1.25rem;
  border-top: 1px solid var(--border-subtle);
  display: flex;
  flex-wrap: wrap;
  justify-content: space-between;
  gap: 0.75rem;
  font-size: 0.82rem;
}

/* Cookie Bar */
.cookie-banner {
  position: fixed;
  bottom: 0;
  left: 0;
  right: 0;
  z-index: 999;
  background: rgba(23, 20, 17, 0.98);
  border-top: 2px solid var(--accent-terra-hover);
  padding: 1rem 1.25rem;
  box-shadow: 0 -10px 30px rgba(0, 0, 0, 0.7);
}

.cookie-inner {
  max-width: var(--max-w);
  margin: 0 auto;
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  justify-content: space-between;
  gap: 1rem;
}

.cookie-text {
  font-size: 0.85rem;
  color: var(--text-primary);
  max-width: 740px;
}

.cookie-btns {
  display: flex;
  flex-wrap: wrap;
  gap: 0.65rem;
}

@media (min-width: 768px) {
  .hero-grid {
    grid-template-columns: 1.15fr 0.85fr;
  }
  .catalog-grid {
    grid-template-columns: repeat(3, 1fr);
  }
  .selector-shell {
    grid-template-columns: 1.15fr 0.85fr;
    padding: 2rem;
  }
  .btn-group {
    grid-template-columns: repeat(3, 1fr);
  }
  .lab-grid {
    grid-template-columns: 1fr 1fr;
  }
  .faq-grid {
    grid-template-columns: 1fr 1fr;
  }
  .contact-box {
    grid-template-columns: 1.2fr 0.8fr;
    padding: 2.5rem;
  }
  .footer-grid {
    grid-template-columns: 1.2fr 0.8fr;
    align-items: center;
  }
}