:root {
  --color-bg: #f8fafc;
  --color-surface: #ffffff;
  --color-surface-soft: #f1f5f9;
  --color-text-main: #0f172a;
  --color-text-muted: #475569;
  --color-primary: #0f172a;
  --color-primary-light: #1e293b;
  --color-accent: #d97706;
  --color-accent-hover: #b45309;
  --color-border: #e2e8f0;
  --color-success: #16a34a;
  --radius-sm: 6px;
  --radius-md: 12px;
  --radius-lg: 20px;
  --shadow-sm: 0 1px 3px rgba(15, 23, 42, 0.08);
  --shadow-md: 0 4px 14px rgba(15, 23, 42, 0.08);
  --shadow-lg: 0 10px 30px rgba(15, 23, 42, 0.12);
  --container-max: 1180px;
  --font-base: 'Noto Sans JP', -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, 'Hiragino Kaku Gothic ProN', Meiryo, sans-serif;
}

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

html {
  font-family: var(--font-base);
  font-size: 16px;
  line-height: 1.75;
  color: var(--color-text-main);
  background-color: var(--color-bg);
  scroll-behavior: smooth;
  -webkit-text-size-adjust: 100%;
}

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

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

a {
  color: inherit;
  text-decoration: none;
  transition: color 0.2s ease, opacity 0.2s ease;
}

ul, ol {
  list-style: none;
}

.skip-link {
  position: absolute;
  top: -100px;
  left: 1rem;
  background: var(--color-accent);
  color: #fff;
  padding: 0.5rem 1rem;
  z-index: 9999;
  font-weight: 700;
  border-radius: var(--radius-sm);
  transition: top 0.2s ease;
}

.skip-link:focus {
  top: 1rem;
}

:focus-visible {
  outline: 3px solid var(--color-accent);
  outline-offset: 2px;
}

@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;
  }
}

.sr-only {
  position: absolute;
  width: 1px;
  height: 1px;
  padding: 0;
  margin: -1px;
  overflow: hidden;
  clip: rect(0, 0, 0, 0);
  white-space: nowrap;
  border: 0;
}

.container {
  width: 100%;
  max-width: var(--container-max);
  margin: 0 auto;
  padding: 0 1.5rem;
}

/* Header & Nav */
.site-header {
  position: sticky;
  top: 0;
  background: rgba(255, 255, 255, 0.95);
  backdrop-filter: blur(8px);
  border-bottom: 1px solid var(--color-border);
  z-index: 1000;
  box-shadow: var(--shadow-sm);
}

.header-inner {
  display: flex;
  align-items: center;
  justify-content: space-between;
  height: 74px;
}

.brand-logo {
  display: flex;
  align-items: center;
  gap: 0.75rem;
  font-size: 1.25rem;
  font-weight: 700;
  letter-spacing: -0.02em;
  color: var(--color-primary);
}

.brand-logo img {
  width: 38px;
  height: 38px;
}

.brand-badge {
  font-size: 0.7rem;
  padding: 0.15rem 0.4rem;
  background: var(--color-surface-soft);
  border: 1px solid var(--color-border);
  border-radius: 4px;
  color: var(--color-text-muted);
  font-weight: 500;
}

.nav-desktop {
  display: flex;
  align-items: center;
  gap: 1.75rem;
}

.nav-desktop a {
  font-weight: 500;
  font-size: 0.95rem;
  color: var(--color-text-muted);
}

.nav-desktop a:hover,
.nav-desktop a.active {
  color: var(--color-accent);
}

.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 0.5rem;
  padding: 0.75rem 1.5rem;
  font-weight: 700;
  font-size: 0.95rem;
  border-radius: var(--radius-sm);
  border: 1px solid transparent;
  cursor: pointer;
  transition: all 0.2s ease;
}

.btn-primary {
  background-color: var(--color-accent);
  color: #ffffff;
}

.btn-primary:hover {
  background-color: var(--color-accent-hover);
  box-shadow: 0 4px 12px rgba(217, 119, 6, 0.25);
}

.btn-outline {
  background: transparent;
  border-color: var(--color-primary);
  color: var(--color-primary);
}

.btn-outline:hover {
  background: var(--color-primary);
  color: #fff;
}

.burger-btn {
  display: none;
  background: none;
  border: none;
  font-size: 1.5rem;
  color: var(--color-primary);
  cursor: pointer;
  padding: 0.5rem;
}

.mobile-menu {
  display: none;
  position: fixed;
  top: 74px;
  left: 0;
  right: 0;
  background: #ffffff;
  border-bottom: 2px solid var(--color-accent);
  padding: 1.5rem;
  box-shadow: var(--shadow-lg);
  flex-direction: column;
  gap: 1rem;
  z-index: 999;
}

.mobile-menu.open {
  display: flex;
}

.mobile-menu a {
  font-weight: 600;
  font-size: 1.05rem;
  padding: 0.5rem 0;
  border-bottom: 1px solid var(--color-border);
}

/* Hero Section */
.hero {
  padding: 4rem 0 3.5rem;
  background: linear-gradient(135deg, #0f172a 0%, #1e293b 100%);
  color: #ffffff;
  position: relative;
  overflow: hidden;
}

.hero::after {
  content: '';
  position: absolute;
  right: -5%;
  bottom: -10%;
  width: 400px;
  height: 400px;
  border-radius: 50%;
  background: radial-gradient(circle, rgba(217,119,6,0.15) 0%, rgba(217,119,6,0) 70%);
  pointer-events: none;
}

.hero-grid {
  display: grid;
  grid-template-columns: 1.15fr 0.85fr;
  gap: 3rem;
  align-items: center;
}

.hero-tag {
  display: inline-flex;
  align-items: center;
  gap: 0.5rem;
  background: rgba(217, 119, 6, 0.2);
  color: #fbbf24;
  border: 1px solid rgba(251, 191, 36, 0.4);
  padding: 0.35rem 0.85rem;
  border-radius: 999px;
  font-size: 0.85rem;
  font-weight: 600;
  margin-bottom: 1.25rem;
}

.hero h1 {
  font-size: 2.35rem;
  line-height: 1.35;
  font-weight: 800;
  margin-bottom: 1.25rem;
  letter-spacing: -0.01em;
}

.hero p {
  font-size: 1.1rem;
  line-height: 1.8;
  color: #cbd5e1;
  margin-bottom: 2rem;
}

.hero-actions {
  display: flex;
  gap: 1rem;
  flex-wrap: wrap;
}

.hero-media {
  position: relative;
}

.hero-media img {
  border-radius: var(--radius-lg);
  box-shadow: var(--shadow-lg);
  border: 1px solid rgba(255,255,255,0.1);
  object-fit: cover;
  width: 100%;
  max-height: 420px;
}

/* Stats Section */
.stats-section {
  background: var(--color-surface);
  border-bottom: 1px solid var(--color-border);
  padding: 2rem 0;
}

.stats-grid {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 1.5rem;
  text-align: center;
}

.stat-item h3 {
  font-size: 2rem;
  font-weight: 800;
  color: var(--color-accent);
  line-height: 1.2;
}

.stat-item p {
  font-size: 0.85rem;
  color: var(--color-text-muted);
  font-weight: 600;
  margin-top: 0.25rem;
}

/* Section Shared */
.section {
  padding: 4.5rem 0;
}

.section-alt {
  background: var(--color-surface-soft);
}

.section-header {
  text-align: center;
  max-width: 760px;
  margin: 0 auto 3rem;
}

.section-tag {
  color: var(--color-accent);
  font-size: 0.85rem;
  font-weight: 700;
  text-transform: uppercase;
  letter-spacing: 0.08em;
  margin-bottom: 0.5rem;
  display: block;
}

.section-title {
  font-size: 2rem;
  font-weight: 800;
  color: var(--color-primary);
  line-height: 1.35;
  margin-bottom: 1rem;
}

.section-desc {
  color: var(--color-text-muted);
  font-size: 1.05rem;
  line-height: 1.8;
}

/* Steps Grid */
.steps-grid {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 1.5rem;
}

.step-card {
  background: var(--color-surface);
  padding: 2rem 1.5rem;
  border-radius: var(--radius-md);
  border: 1px solid var(--color-border);
  position: relative;
  transition: transform 0.2s ease, box-shadow 0.2s ease;
}

.step-card:hover {
  transform: translateY(-4px);
  box-shadow: var(--shadow-md);
}

.step-number {
  width: 40px;
  height: 40px;
  border-radius: 50%;
  background: var(--color-primary);
  color: #fff;
  display: flex;
  align-items: center;
  justify-content: center;
  font-weight: 800;
  font-size: 1rem;
  margin-bottom: 1.25rem;
}

.step-card h3 {
  font-size: 1.15rem;
  font-weight: 700;
  margin-bottom: 0.75rem;
}

.step-card p {
  font-size: 0.92rem;
  color: var(--color-text-muted);
  line-height: 1.7;
}

/* Services Grid */
.services-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 2rem;
}

.service-card {
  background: var(--color-surface);
  border-radius: var(--radius-md);
  border: 1px solid var(--color-border);
  overflow: hidden;
  display: flex;
  flex-direction: column;
  transition: all 0.25s ease;
}

.service-card:hover {
  transform: translateY(-5px);
  box-shadow: var(--shadow-lg);
}

.service-img-wrap {
  height: 220px;
  overflow: hidden;
  background: #cbd5e1;
}

.service-img-wrap img {
  width: 100%;
  height: 100%;
  object-fit: cover;
  transition: transform 0.4s ease;
}

.service-card:hover .service-img-wrap img {
  transform: scale(1.05);
}

.service-content {
  padding: 1.75rem;
  display: flex;
  flex-direction: column;
  flex-grow: 1;
}

.service-content h3 {
  font-size: 1.25rem;
  font-weight: 700;
  margin-bottom: 0.75rem;
  color: var(--color-primary);
}

.service-content p {
  font-size: 0.95rem;
  color: var(--color-text-muted);
  line-height: 1.75;
  margin-bottom: 1.5rem;
  flex-grow: 1;
}

.service-link {
  font-weight: 700;
  font-size: 0.9rem;
  color: var(--color-accent);
  display: inline-flex;
  align-items: center;
  gap: 0.4rem;
}

/* Feature Asymmetric Block */
.feature-split {
  display: grid;
  grid-template-columns: 1fr 1.1fr;
  gap: 3.5rem;
  align-items: center;
}

.feature-img-box img {
  border-radius: var(--radius-lg);
  box-shadow: var(--shadow-md);
  object-fit: cover;
}

.feature-info h2 {
  font-size: 2rem;
  font-weight: 800;
  line-height: 1.35;
  margin-bottom: 1.25rem;
}

.feature-list {
  margin: 1.5rem 0;
  display: flex;
  flex-direction: column;
  gap: 1rem;
}

.feature-list li {
  display: flex;
  align-items: flex-start;
  gap: 0.75rem;
  font-size: 0.95rem;
  line-height: 1.65;
}

.feature-list i {
  color: var(--color-accent);
  margin-top: 0.25rem;
  font-size: 1.1rem;
}

/* Pricing Section */
.pricing-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 2rem;
  align-items: stretch;
}

.pricing-card {
  background: var(--color-surface);
  border-radius: var(--radius-md);
  border: 1px solid var(--color-border);
  padding: 2.5rem 2rem;
  display: flex;
  flex-direction: column;
  position: relative;
  transition: all 0.25s ease;
}

.pricing-card.featured {
  border-color: var(--color-accent);
  box-shadow: var(--shadow-lg);
  transform: scale(1.03);
}

.pricing-badge {
  position: absolute;
  top: -12px;
  left: 50%;
  transform: translateX(-50%);
  background: var(--color-accent);
  color: #fff;
  font-size: 0.75rem;
  font-weight: 800;
  padding: 0.25rem 1rem;
  border-radius: 999px;
}

.pricing-header h3 {
  font-size: 1.35rem;
  font-weight: 700;
  margin-bottom: 0.5rem;
}

.pricing-price {
  font-size: 2.25rem;
  font-weight: 800;
  color: var(--color-primary);
  margin: 1rem 0 1.5rem;
}

.pricing-price span {
  font-size: 0.9rem;
  font-weight: 500;
  color: var(--color-text-muted);
}

.pricing-features {
  margin-bottom: 2rem;
  display: flex;
  flex-direction: column;
  gap: 0.75rem;
  flex-grow: 1;
}

.pricing-features li {
  font-size: 0.92rem;
  display: flex;
  align-items: center;
  gap: 0.5rem;
  color: var(--color-text-muted);
}

.pricing-features li i {
  color: var(--color-success);
}

/* Trust Principles */
.trust-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 1.75rem;
}

.trust-box {
  background: #ffffff;
  padding: 2rem;
  border-radius: var(--radius-md);
  border: 1px solid var(--color-border);
}

.trust-icon {
  font-size: 2rem;
  color: var(--color-accent);
  margin-bottom: 1rem;
}

.trust-box h3 {
  font-size: 1.15rem;
  font-weight: 700;
  margin-bottom: 0.5rem;
}

.trust-box p {
  font-size: 0.92rem;
  color: var(--color-text-muted);
  line-height: 1.7;
}

/* Lead Form Section */
.form-section {
  background: #0f172a;
  color: #ffffff;
}

.form-wrapper {
  max-width: 680px;
  margin: 0 auto;
  background: #1e293b;
  padding: 3rem;
  border-radius: var(--radius-lg);
  border: 1px solid rgba(255,255,255,0.1);
  box-shadow: var(--shadow-lg);
}

.form-title {
  text-align: center;
  font-size: 1.85rem;
  font-weight: 800;
  margin-bottom: 0.5rem;
}

.form-subtitle {
  text-align: center;
  color: #94a3b8;
  margin-bottom: 2rem;
  font-size: 0.95rem;
}

.form-row {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 1rem;
}

.form-group {
  margin-bottom: 1.25rem;
}

.form-group label {
  display: block;
  font-size: 0.85rem;
  font-weight: 600;
  margin-bottom: 0.4rem;
  color: #e2e8f0;
}

.form-group input,
.form-group textarea,
.form-group select {
  width: 100%;
  padding: 0.75rem 1rem;
  border-radius: var(--radius-sm);
  border: 1px solid #334155;
  background: #0f172a;
  color: #ffffff;
  font-family: inherit;
  font-size: 0.95rem;
  transition: border-color 0.2s ease;
}

.form-group input:focus,
.form-group textarea:focus {
  border-color: var(--color-accent);
  outline: none;
}

.checkbox-group {
  display: flex;
  align-items: flex-start;
  gap: 0.6rem;
  margin-bottom: 1.5rem;
  font-size: 0.85rem;
  color: #cbd5e1;
}

.checkbox-group input {
  margin-top: 0.25rem;
  accent-color: var(--color-accent);
}

.checkbox-group a {
  color: var(--color-accent);
  text-decoration: underline;
}

/* Accordion */
.accordion {
  max-width: 800px;
  margin: 0 auto;
  display: flex;
  flex-direction: column;
  gap: 1rem;
}

.accordion-item {
  background: var(--color-surface);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-md);
  overflow: hidden;
}

.accordion-btn {
  width: 100%;
  text-align: left;
  padding: 1.25rem 1.5rem;
  background: none;
  border: none;
  font-family: inherit;
  font-size: 1.05rem;
  font-weight: 700;
  color: var(--color-primary);
  display: flex;
  justify-content: space-between;
  align-items: center;
  cursor: pointer;
}

.accordion-content {
  display: none;
  padding: 0 1.5rem 1.25rem;
  font-size: 0.95rem;
  color: var(--color-text-muted);
  line-height: 1.8;
  border-top: 1px solid var(--color-surface-soft);
}

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

.accordion-item.active .accordion-icon {
  transform: rotate(180deg);
}

.accordion-icon {
  transition: transform 0.2s ease;
  color: var(--color-accent);
}

/* Trust Layer */
.trust-layer {
  background: #0b1120;
  color: #94a3b8;
  padding: 2.5rem 0;
  font-size: 0.85rem;
  border-top: 1px solid #1e293b;
  border-bottom: 1px solid #1e293b;
}

.trust-layer-inner {
  display: grid;
  grid-template-columns: 1.2fr 1fr;
  gap: 2rem;
}

.trust-layer h4 {
  color: #f1f5f9;
  font-size: 0.95rem;
  margin-bottom: 0.5rem;
}

.trust-layer p {
  line-height: 1.7;
}

.trust-layer a {
  color: #cbd5e1;
  text-decoration: underline;
}

/* Footer */
.site-footer {
  background: #070d19;
  color: #64748b;
  padding: 3.5rem 0 2rem;
  font-size: 0.88rem;
}

.footer-grid {
  display: grid;
  grid-template-columns: 1.5fr 1fr 1fr 1fr;
  gap: 2.5rem;
  margin-bottom: 3rem;
}

.footer-brand h3 {
  color: #ffffff;
  font-size: 1.2rem;
  margin-bottom: 0.75rem;
}

.footer-brand p {
  line-height: 1.7;
}

.footer-col h4 {
  color: #ffffff;
  font-size: 0.95rem;
  margin-bottom: 1rem;
  font-weight: 700;
}

.footer-col ul {
  display: flex;
  flex-direction: column;
  gap: 0.5rem;
}

.footer-col a:hover {
  color: #ffffff;
}

.footer-bottom {
  padding-top: 2rem;
  border-top: 1px solid #1e293b;
  text-align: center;
  font-size: 0.8rem;
  line-height: 1.7;
}

/* Cookie Banner */
.cookie-banner {
  position: fixed;
  bottom: 0;
  left: 0;
  right: 0;
  background: #ffffff;
  border-top: 2px solid var(--color-accent);
  padding: 1.25rem 1.5rem;
  box-shadow: 0 -4px 20px rgba(0,0,0,0.15);
  z-index: 9999;
  display: none;
}

.cookie-banner.active {
  display: block;
}

.cookie-inner {
  max-width: var(--container-max);
  margin: 0 auto;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 1.5rem;
}

.cookie-text {
  font-size: 0.88rem;
  color: var(--color-text-main);
  line-height: 1.6;
}

.cookie-text a {
  color: var(--color-accent);
  text-decoration: underline;
}

.cookie-actions {
  display: flex;
  gap: 0.75rem;
  flex-shrink: 0;
}

.btn-cookie {
  padding: 0.5rem 1rem;
  font-size: 0.85rem;
  font-weight: 700;
  border-radius: var(--radius-sm);
  cursor: pointer;
}

/* Static Subpage Layout */
.page-hero {
  background: linear-gradient(135deg, #0f172a 0%, #1e293b 100%);
  color: #fff;
  padding: 3.5rem 0;
  text-align: center;
}

.page-hero h1 {
  font-size: 2.25rem;
  font-weight: 800;
  margin-bottom: 0.75rem;
}

.page-hero p {
  color: #cbd5e1;
  font-size: 1.05rem;
  max-width: 680px;
  margin: 0 auto;
}

.prose {
  background: #ffffff;
  padding: 3rem;
  border-radius: var(--radius-md);
  border: 1px solid var(--color-border);
  box-shadow: var(--shadow-sm);
  margin: -2rem auto 4rem;
  max-width: 900px;
  position: relative;
}

.prose h2 {
  font-size: 1.45rem;
  margin: 2rem 0 1rem;
  color: var(--color-primary);
  border-bottom: 2px solid var(--color-surface-soft);
  padding-bottom: 0.5rem;
}

.prose h3 {
  font-size: 1.15rem;
  margin: 1.5rem 0 0.5rem;
}

.prose p, .prose ul, .prose ol {
  font-size: 0.95rem;
  line-height: 1.85;
  color: var(--color-text-main);
  margin-bottom: 1.25rem;
}

.prose ul {
  padding-left: 1.5rem;
  list-style: disc;
}

.contact-grid {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 2.5rem;
  margin-top: 2rem;
}

.contact-card {
  background: var(--color-surface-soft);
  padding: 2rem;
  border-radius: var(--radius-md);
  border: 1px solid var(--color-border);
}

.map-box iframe {
  width: 100%;
  height: 320px;
  border: 0;
  border-radius: var(--radius-md);
}

/* Responsive */
@media (max-width: 992px) {
  .hero-grid,
  .feature-split,
  .contact-grid,
  .trust-layer-inner {
    grid-template-columns: 1fr;
  }
  .services-grid,
  .pricing-grid,
  .trust-grid {
    grid-template-columns: 1fr;
  }
  .steps-grid,
  .stats-grid {
    grid-template-columns: 1fr 1fr;
  }
  .footer-grid {
    grid-template-columns: 1fr 1fr;
  }
  .pricing-card.featured {
    transform: none;
  }
}

@media (max-width: 768px) {
  .nav-desktop {
    display: none;
  }
  .burger-btn {
    display: block;
  }
  .steps-grid,
  .stats-grid {
    grid-template-columns: 1fr;
  }
  .footer-grid {
    grid-template-columns: 1fr;
  }
  .form-row {
    grid-template-columns: 1fr;
  }
  .form-wrapper {
    padding: 2rem 1.5rem;
  }
  .hero h1 {
    font-size: 1.85rem;
  }
  .cookie-inner {
    flex-direction: column;
    align-items: flex-start;
  }
}