:root {
  --primary: #0a192f;
  --primary-light: #1e293b;
  --accent: #2563eb;
  --accent-hover: #1d4ed8;
  --accent-cyan: #0284c7;
  --gold: #d97706;
  --bg: #f8fafc;
  --surface: #ffffff;
  --surface-alt: #f1f5f9;
  --text: #0f172a;
  --text-muted: #475569;
  --border: #e2e8f0;
  --border-dark: #cbd5e1;
  --radius-sm: 6px;
  --radius-md: 10px;
  --radius-lg: 16px;
  --shadow-sm: 0 1px 2px 0 rgba(0, 0, 0, 0.05);
  --shadow-md: 0 4px 6px -1px rgba(0, 0, 0, 0.1), 0 2px 4px -1px rgba(0, 0, 0, 0.06);
  --shadow-lg: 0 10px 15px -3px rgba(0, 0, 0, 0.1), 0 4px 6px -2px rgba(0, 0, 0, 0.05);
  --font-sans: -apple-system, BlinkMacSystemFont, "Segoe UI", "Hiragino Kaku Gothic ProN", "Hiragino Sans", Meiryo, sans-serif;
  --container-max: 1180px;
}

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

html {
  font-family: var(--font-sans);
  font-size: 16px;
  line-height: 1.6;
  color: var(--text);
  background-color: var(--bg);
  scroll-behavior: smooth;
  -webkit-text-size-adjust: 100%;
}

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

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

a {
  color: var(--accent);
  text-decoration: none;
  transition: color 0.2s ease;
}

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

.skip-link {
  position: absolute;
  top: -40px;
  left: 0;
  background: var(--primary);
  color: #ffffff;
  padding: 8px 16px;
  z-index: 1000;
  font-weight: 700;
}
.skip-link:focus {
  top: 0;
}

.container {
  width: 100%;
  max-width: var(--container-max);
  margin-left: auto;
  margin-right: auto;
  padding-left: 20px;
  padding-right: 20px;
}

.text-center { text-align: center; }
.mx-auto { margin-left: auto; margin-right: auto; }
.max-w-lg { max-width: 580px; }

/* Buttons */
.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  padding: 12px 24px;
  font-size: 0.95rem;
  font-weight: 700;
  border-radius: var(--radius-sm);
  border: 1px solid transparent;
  cursor: pointer;
  transition: all 0.2s ease;
  line-height: 1.2;
}

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

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

.btn-secondary {
  background-color: transparent;
  color: var(--primary);
  border-color: var(--border-dark);
}
.btn-secondary:hover {
  background-color: var(--surface-alt);
  color: var(--primary);
}

.btn-outline {
  background-color: transparent;
  color: var(--text-muted);
  border-color: var(--border);
}
.btn-outline:hover {
  background-color: var(--surface-alt);
  color: var(--text);
}

.btn-sm {
  padding: 8px 16px;
  font-size: 0.875rem;
}

.btn-block {
  display: flex;
  width: 100%;
}

/* Header */
.site-header {
  background-color: var(--surface);
  border-bottom: 1px solid var(--border);
  position: sticky;
  top: 0;
  z-index: 100;
}

.header-container {
  display: flex;
  align-items: center;
  justify-content: space-between;
  height: 72px;
}

.brand-logo {
  display: flex;
  align-items: center;
  gap: 10px;
  color: var(--primary);
  font-weight: 800;
  font-size: 1.25rem;
  letter-spacing: -0.02em;
}

.logo-mark {
  background-color: var(--primary);
  color: #ffffff;
  width: 32px;
  height: 32px;
  display: flex;
  align-items: center;
  justify-content: center;
  border-radius: var(--radius-sm);
  font-size: 1rem;
}

.badge-sub {
  font-size: 0.75rem;
  font-weight: 700;
  background-color: var(--surface-alt);
  color: var(--accent);
  padding: 2px 6px;
  border-radius: 4px;
  margin-left: 4px;
}

.site-nav {
  display: flex;
  align-items: center;
  gap: 32px;
}

.nav-list {
  display: flex;
  list-style: none;
  gap: 24px;
}

.nav-link {
  color: var(--text-muted);
  font-weight: 600;
  font-size: 0.95rem;
  padding: 6px 0;
  border-bottom: 2px solid transparent;
}

.nav-link:hover, .nav-link.active {
  color: var(--accent);
  border-bottom-color: var(--accent);
}

.nav-toggle {
  display: none;
  background: none;
  border: none;
  cursor: pointer;
  padding: 8px;
}

.hamburger {
  display: block;
  width: 24px;
  height: 2px;
  background-color: var(--primary);
  position: relative;
  transition: background-color 0.2s;
}

.hamburger::before, .hamburger::after {
  content: "";
  position: absolute;
  width: 24px;
  height: 2px;
  background-color: var(--primary);
  left: 0;
  transition: transform 0.2s;
}

.hamburger::before { top: -6px; }
.hamburger::after { top: 6px; }

/* Hero Section */
.hero-section {
  background: linear-gradient(180deg, var(--surface) 0%, var(--bg) 100%);
  padding: 64px 0 72px;
  border-bottom: 1px solid var(--border);
}

.hero-grid {
  display: grid;
  grid-template-columns: 1.15fr 0.85fr;
  gap: 48px;
  align-items: center;
}

.hero-badge {
  display: inline-block;
  background-color: #eff6ff;
  color: var(--accent);
  font-size: 0.825rem;
  font-weight: 700;
  padding: 4px 12px;
  border-radius: 20px;
  margin-bottom: 16px;
  border: 1px solid #bfdbfe;
}

.hero-title {
  font-size: clamp(1.8rem, 3.2vw, 2.5rem);
  font-weight: 900;
  color: var(--primary);
  line-height: 1.25;
  margin-bottom: 18px;
  letter-spacing: -0.02em;
}

.hero-lead {
  font-size: 1.05rem;
  color: var(--text-muted);
  line-height: 1.7;
  margin-bottom: 28px;
}

.hero-actions {
  display: flex;
  gap: 16px;
  margin-bottom: 36px;
  flex-wrap: wrap;
}

.hero-highlights {
  display: flex;
  gap: 32px;
  padding-top: 24px;
  border-top: 1px solid var(--border);
}

.highlight-item {
  display: flex;
  flex-direction: column;
}

.highlight-num {
  font-size: 1.5rem;
  font-weight: 900;
  color: var(--primary);
  line-height: 1.2;
}

.highlight-label {
  font-size: 0.8rem;
  color: var(--text-muted);
  font-weight: 600;
}

.hero-svg-img {
  width: 100%;
  border-radius: var(--radius-lg);
  box-shadow: var(--shadow-lg);
}

/* Sections */
.section {
  padding: 72px 0;
}

.section-header {
  margin-bottom: 48px;
}

.section-subtitle {
  font-size: 0.8rem;
  font-weight: 800;
  color: var(--accent);
  letter-spacing: 0.08em;
  text-transform: uppercase;
  display: block;
  margin-bottom: 6px;
}

.section-title {
  font-size: clamp(1.5rem, 2.5vw, 2rem);
  font-weight: 800;
  color: var(--primary);
  line-height: 1.3;
  margin-bottom: 12px;
}

.section-desc {
  color: var(--text-muted);
  font-size: 1rem;
  max-width: 680px;
  margin-left: auto;
  margin-right: auto;
}

/* Cards Grid */
.cards-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(320px, 1fr));
  gap: 28px;
}

.service-card {
  background-color: var(--surface);
  border: 1px solid var(--border);
  border-radius: var(--radius-md);
  padding: 32px;
  box-shadow: var(--shadow-sm);
  display: flex;
  flex-direction: column;
  transition: transform 0.2s ease, box-shadow 0.2s ease;
}

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

.card-icon {
  margin-bottom: 20px;
}

.card-title {
  font-size: 1.25rem;
  font-weight: 700;
  color: var(--primary);
  margin-bottom: 12px;
}

.card-text {
  color: var(--text-muted);
  font-size: 0.95rem;
  line-height: 1.65;
  margin-bottom: 20px;
}

.card-features {
  list-style: none;
  margin-top: auto;
  padding-top: 16px;
  border-top: 1px solid var(--surface-alt);
}

.card-features li {
  font-size: 0.875rem;
  color: var(--text);
  margin-bottom: 8px;
  padding-left: 18px;
  position: relative;
}

.card-features li::before {
  content: "✓";
  color: var(--accent);
  position: absolute;
  left: 0;
  font-weight: 800;
}

/* Steps Grid */
.steps-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(280px, 1fr));
  gap: 24px;
}

.step-card {
  background-color: var(--surface);
  border: 1px solid var(--border);
  border-radius: var(--radius-md);
  padding: 32px 24px;
  position: relative;
}

.step-number {
  font-size: 2rem;
  font-weight: 900;
  color: #bfdbfe;
  line-height: 1;
  margin-bottom: 14px;
}

.step-title {
  font-size: 1.15rem;
  font-weight: 700;
  color: var(--primary);
  margin-bottom: 10px;
}

.step-desc {
  color: var(--text-muted);
  font-size: 0.9rem;
  line-height: 1.6;
}

/* Pricing Card */
.pricing-wrapper {
  display: flex;
  justify-content: center;
}

.pricing-card {
  background-color: var(--surface);
  border: 2px solid var(--accent);
  border-radius: var(--radius-lg);
  padding: 40px;
  max-width: 580px;
  width: 100%;
  box-shadow: var(--shadow-lg);
  position: relative;
}

.pricing-badge {
  position: absolute;
  top: -14px;
  left: 50%;
  transform: translateX(-50%);
  background-color: var(--accent);
  color: #ffffff;
  font-size: 0.8rem;
  font-weight: 700;
  padding: 4px 16px;
  border-radius: 20px;
  letter-spacing: 0.04em;
}

.pricing-plan {
  font-size: 1.4rem;
  font-weight: 800;
  color: var(--primary);
  text-align: center;
  margin-bottom: 8px;
}

.pricing-desc {
  text-align: center;
  color: var(--text-muted);
  font-size: 0.95rem;
  margin-bottom: 24px;
}

.price-box {
  display: flex;
  align-items: baseline;
  justify-content: center;
  gap: 6px;
  margin-bottom: 28px;
  padding: 16px 0;
  background-color: var(--surface-alt);
  border-radius: var(--radius-md);
}

.price-currency {
  font-size: 1.25rem;
  font-weight: 800;
  color: var(--primary);
}

.price-value {
  font-size: 3rem;
  font-weight: 900;
  color: var(--primary);
  line-height: 1;
}

.price-period {
  font-size: 0.9rem;
  color: var(--text-muted);
  font-weight: 600;
}

.pricing-list {
  list-style: none;
  margin-bottom: 32px;
}

.pricing-list li {
  font-size: 0.95rem;
  color: var(--text);
  margin-bottom: 12px;
  padding-left: 24px;
  position: relative;
}

.pricing-list li::before {
  content: "✔";
  color: var(--accent);
  position: absolute;
  left: 0;
  font-size: 0.9rem;
}

.pricing-note {
  font-size: 0.8rem;
  color: var(--text-muted);
  text-align: center;
  margin-top: 14px;
}

/* FAQ Accordion */
.faq-accordion {
  max-width: 800px;
  margin: 0 auto;
}

.faq-item {
  background-color: var(--surface);
  border: 1px solid var(--border);
  border-radius: var(--radius-md);
  margin-bottom: 14px;
  overflow: hidden;
  transition: border-color 0.2s;
}

.faq-item[open] {
  border-color: var(--accent);
}

.faq-question {
  padding: 18px 24px;
  font-weight: 700;
  color: var(--primary);
  cursor: pointer;
  list-style: none;
  display: flex;
  justify-content: space-between;
  align-items: center;
  font-size: 1.05rem;
}

.faq-question::-webkit-details-marker {
  display: none;
}

.faq-question::after {
  content: "+";
  font-size: 1.5rem;
  font-weight: 400;
  color: var(--accent);
  transition: transform 0.2s ease;
}

.faq-item[open] .faq-question::after {
  content: "−";
}

.faq-answer {
  padding: 0 24px 20px;
  color: var(--text-muted);
  font-size: 0.95rem;
  line-height: 1.7;
}

/* CTA Section */
.section-cta {
  background-color: var(--primary);
  color: #ffffff;
  padding: 64px 0;
}

.cta-title {
  font-size: clamp(1.6rem, 2.5vw, 2.2rem);
  font-weight: 800;
  margin-bottom: 14px;
}

.cta-desc {
  font-size: 1.05rem;
  color: #94a3b8;
  max-width: 640px;
  margin: 0 auto 28px;
}

.cta-buttons {
  display: flex;
  justify-content: center;
  gap: 16px;
  flex-wrap: wrap;
}

.section-cta .btn-secondary {
  color: #ffffff;
  border-color: #475569;
}
.section-cta .btn-secondary:hover {
  background-color: #1e293b;
}

/* Page Header (Subpages) */
.page-header {
  background-color: var(--surface);
  border-bottom: 1px solid var(--border);
  padding: 48px 0;
  text-align: center;
}

.page-title {
  font-size: clamp(1.8rem, 3vw, 2.4rem);
  font-weight: 800;
  color: var(--primary);
  margin-bottom: 10px;
}

.page-lead {
  font-size: 1.05rem;
  color: var(--text-muted);
}

.content-container {
  max-width: 860px;
}

/* Prose for Legal & About */
.prose h2 {
  font-size: 1.4rem;
  font-weight: 800;
  color: var(--primary);
  margin: 36px 0 16px;
  padding-bottom: 8px;
  border-bottom: 2px solid var(--surface-alt);
}

.prose p {
  margin-bottom: 18px;
  color: var(--text);
  line-height: 1.75;
}

.prose ul, .prose ol {
  margin-bottom: 20px;
  padding-left: 24px;
}

.prose li {
  margin-bottom: 8px;
  line-height: 1.65;
}

/* Info Table */
.info-table {
  width: 100%;
  border-collapse: collapse;
  margin: 24px 0 36px;
  background-color: var(--surface);
  border: 1px solid var(--border);
  border-radius: var(--radius-md);
  overflow: hidden;
}

.info-table th, .info-table td {
  padding: 14px 18px;
  border-bottom: 1px solid var(--border);
  font-size: 0.95rem;
  text-align: left;
}

.info-table th {
  background-color: var(--surface-alt);
  color: var(--primary);
  font-weight: 700;
  width: 28%;
}

.info-table tr:last-child th,
.info-table tr:last-child td {
  border-bottom: none;
}

/* Features List Box */
.features-list-box {
  display: flex;
  flex-direction: column;
  gap: 16px;
  margin: 24px 0;
}

.feature-box-item {
  background-color: var(--surface);
  border: 1px solid var(--border);
  border-left: 4px solid var(--accent);
  padding: 20px;
  border-radius: 0 var(--radius-md) var(--radius-md) 0;
}

.feature-box-item h3 {
  font-size: 1.1rem;
  font-weight: 700;
  color: var(--primary);
  margin-bottom: 6px;
}

.feature-box-item p {
  margin-bottom: 0;
  font-size: 0.9rem;
  color: var(--text-muted);
}

/* Services Detail Page */
.service-detail-item {
  background-color: var(--surface);
  border: 1px solid var(--border);
  border-radius: var(--radius-lg);
  padding: 36px;
  margin-bottom: 28px;
}

.service-tag {
  display: inline-block;
  font-size: 0.75rem;
  font-weight: 800;
  color: var(--accent);
  letter-spacing: 0.05em;
  margin-bottom: 8px;
}

.service-detail-item h2 {
  font-size: 1.35rem;
  font-weight: 800;
  color: var(--primary);
  margin-bottom: 14px;
}

.service-detail-item p {
  color: var(--text-muted);
  line-height: 1.7;
  margin-bottom: 16px;
}

.service-detail-item ul {
  padding-left: 20px;
}

.service-detail-item li {
  margin-bottom: 8px;
  color: var(--text);
  font-size: 0.95rem;
}

.pricing-section-block {
  margin-top: 64px;
  padding-top: 48px;
  border-top: 1px solid var(--border);
}

/* Contact Page Grid */
.contact-grid {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 32px;
}

.contact-card, .contact-guidelines-card {
  background-color: var(--surface);
  border: 1px solid var(--border);
  border-radius: var(--radius-lg);
  padding: 36px;
}

.contact-card h2, .contact-guidelines-card h2 {
  font-size: 1.3rem;
  font-weight: 800;
  color: var(--primary);
  margin-bottom: 14px;
}

.contact-intro {
  color: var(--text-muted);
  font-size: 0.95rem;
  margin-bottom: 24px;
}

.contact-method {
  margin-bottom: 20px;
  padding-bottom: 16px;
  border-bottom: 1px solid var(--surface-alt);
}

.contact-method:last-child {
  border-bottom: none;
  margin-bottom: 0;
  padding-bottom: 0;
}

.method-label {
  font-size: 0.8rem;
  font-weight: 700;
  color: var(--text-muted);
  text-transform: uppercase;
  margin-bottom: 4px;
}

.method-value {
  font-size: 1.1rem;
  font-weight: 700;
  color: var(--primary);
}

.method-hint {
  font-size: 0.8rem;
  color: var(--text-muted);
  margin-top: 4px;
}

.guide-item {
  margin-bottom: 20px;
}

.guide-item h3 {
  font-size: 1.05rem;
  font-weight: 700;
  color: var(--primary);
  margin-bottom: 6px;
}

.guide-item p {
  color: var(--text-muted);
  font-size: 0.9rem;
  line-height: 1.6;
}

.guide-cta-box {
  margin-top: 28px;
  padding-top: 20px;
  border-top: 1px solid var(--border);
}

/* 404 Section */
.not-found-section {
  padding: 96px 0;
}

.not-found-code {
  font-size: 5rem;
  font-weight: 900;
  color: var(--accent);
  line-height: 1;
  margin-bottom: 16px;
}

.not-found-actions {
  display: flex;
  justify-content: center;
  gap: 16px;
  margin-top: 28px;
}

/* Footer */
.site-footer {
  background-color: var(--primary);
  color: #ffffff;
  margin-top: auto;
  padding-top: 64px;
  border-top: 1px solid #1e293b;
}

.footer-grid {
  display: grid;
  grid-template-columns: 1.5fr 1fr 1fr 1.5fr;
  gap: 40px;
  padding-bottom: 48px;
}

.footer-brand .logo-text {
  font-size: 1.3rem;
  font-weight: 800;
  letter-spacing: -0.02em;
  display: block;
  margin-bottom: 10px;
}

.footer-tagline {
  color: #94a3b8;
  font-size: 0.9rem;
  margin-bottom: 14px;
}

.footer-disclaimer {
  color: #64748b;
  font-size: 0.75rem;
  line-height: 1.5;
}

.footer-heading {
  font-size: 0.95rem;
  font-weight: 700;
  color: #ffffff;
  margin-bottom: 16px;
  letter-spacing: 0.02em;
}

.footer-links ul {
  list-style: none;
}

.footer-links li {
  margin-bottom: 10px;
}

.footer-links a {
  color: #94a3b8;
  font-size: 0.9rem;
}

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

.footer-contact p {
  color: #94a3b8;
  font-size: 0.85rem;
  margin-bottom: 8px;
}

.footer-contact a {
  color: #38bdf8;
}

.footer-bottom {
  background-color: #050d1a;
  padding: 20px 0;
  border-top: 1px solid #1e293b;
}

.footer-bottom-flex {
  display: flex;
  justify-content: space-between;
  align-items: center;
  font-size: 0.8rem;
  color: #64748b;
}

.domain-text {
  font-weight: 600;
}

/* Cookie Banner */
.cookie-banner {
  position: fixed;
  bottom: 0;
  left: 0;
  right: 0;
  background-color: #0f172a;
  color: #f8fafc;
  padding: 16px 0;
  z-index: 9999;
  border-top: 1px solid #334155;
  box-shadow: 0 -4px 12px rgba(0, 0, 0, 0.2);
}

.cookie-content {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 24px;
}

.cookie-text {
  font-size: 0.875rem;
  line-height: 1.5;
  color: #cbd5e1;
}

.cookie-text a {
  color: #38bdf8;
  text-decoration: underline;
}

.cookie-actions {
  display: flex;
  gap: 10px;
  flex-shrink: 0;
}

.cookie-banner .btn-outline {
  color: #cbd5e1;
  border-color: #475569;
}
.cookie-banner .btn-outline:hover {
  background-color: #1e293b;
  color: #ffffff;
}

/* Responsive */
@media (max-width: 992px) {
  .hero-grid {
    grid-template-columns: 1fr;
    gap: 36px;
  }
  .hero-visual {
    order: -1;
    max-width: 500px;
    margin: 0 auto;
  }
  .footer-grid {
    grid-template-columns: 1fr 1fr;
    gap: 32px;
  }
}

@media (max-width: 768px) {
  .site-nav {
    position: fixed;
    top: 72px;
    left: 0;
    right: 0;
    background-color: var(--surface);
    flex-direction: column;
    padding: 24px;
    gap: 20px;
    border-bottom: 1px solid var(--border);
    box-shadow: var(--shadow-md);
    display: none;
  }
  .site-nav.is-open {
    display: flex;
  }
  .nav-list {
    flex-direction: column;
    width: 100%;
    text-align: center;
    gap: 16px;
  }
  .nav-toggle {
    display: block;
  }
  .contact-grid {
    grid-template-columns: 1fr;
  }
  .footer-grid {
    grid-template-columns: 1fr;
  }
  .cookie-content {
    flex-direction: column;
    align-items: flex-start;
  }
  .footer-bottom-flex {
    flex-direction: column;
    gap: 8px;
    text-align: center;
  }
  .info-table th {
    width: 35%;
  }
}