:root {
  --primary-color: #1e3a8a;
  --primary-hover: #172554;
  --accent-color: #d97706;
  --accent-hover: #b45309;
  --bg-color: #f8fafc;
  --surface-color: #ffffff;
  --text-main: #1e293b;
  --text-muted: #475569;
  --border-color: #cbd5e1;
  --focus-ring: #2563eb;
  --success-color: #15803d;
  --error-color: #b91c1c;
  --font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", "Hiragino Kaku Gothic ProN", "BIZ UDPGothic", Meiryo, sans-serif;
}

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

body {
  font-family: var(--font-family);
  font-size: 18px;
  line-height: 1.75;
  color: var(--text-main);
  background-color: var(--bg-color);
  -webkit-font-smoothing: antialiased;
}

a {
  color: var(--primary-color);
  text-decoration: underline;
  text-underline-offset: 4px;
}

a:hover, a:focus-visible {
  color: var(--primary-hover);
}

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

.skip-link {
  position: absolute;
  top: -40px;
  left: 10px;
  background: var(--primary-color);
  color: #ffffff;
  padding: 8px 16px;
  text-decoration: none;
  font-weight: bold;
  z-index: 9999;
  border-radius: 4px;
  transition: top 0.2s ease;
}

.skip-link:focus {
  top: 10px;
}

.container {
  width: 100%;
  max-width: 1100px;
  margin: 0 auto;
  padding: 0 20px;
}

/* Header & Nav */
.site-header {
  background-color: var(--surface-color);
  border-bottom: 2px solid var(--border-color);
  position: sticky;
  top: 0;
  z-index: 1000;
}

.header-inner {
  display: flex;
  justify-content: space-between;
  align-items: center;
  padding: 16px 0;
}

.brand-link {
  display: flex;
  align-items: center;
  gap: 12px;
  text-decoration: none;
  color: var(--text-main);
  font-weight: bold;
  font-size: 1.35rem;
}

.brand-icon {
  width: 32px;
  height: 32px;
}

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

.main-nav a {
  text-decoration: none;
  font-weight: 600;
  color: var(--text-main);
  padding: 6px 10px;
  border-radius: 4px;
}

.main-nav a:hover, .main-nav a[aria-current="page"] {
  color: var(--primary-color);
  background-color: #eff6ff;
}

.nav-toggle {
  display: none;
  background: none;
  border: 2px solid var(--border-color);
  padding: 6px 12px;
  font-size: 1rem;
  border-radius: 4px;
  cursor: pointer;
}

/* Hero Section */
.hero {
  background: linear-gradient(135deg, #1e3a8a 0%, #0f172a 100%);
  color: #ffffff;
  padding: 64px 0;
  border-radius: 0 0 16px 16px;
}

.hero h1 {
  font-size: 2.2rem;
  line-height: 1.35;
  margin-bottom: 20px;
}

.hero-subtitle {
  font-size: 1.15rem;
  margin-bottom: 28px;
  color: #e2e8f0;
  max-width: 800px;
}

.btn {
  display: inline-block;
  padding: 14px 28px;
  font-size: 1.1rem;
  font-weight: bold;
  border-radius: 6px;
  text-decoration: none;
  text-align: center;
  cursor: pointer;
  border: 2px solid transparent;
  transition: background-color 0.2s ease, color 0.2s ease;
}

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

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

.btn-secondary {
  background-color: transparent;
  border-color: #ffffff;
  color: #ffffff;
  margin-left: 12px;
}

.btn-secondary:hover {
  background-color: rgba(255, 255, 255, 0.1);
}

/* Sections */
section {
  padding: 56px 0;
}

.section-title {
  font-size: 1.8rem;
  margin-bottom: 16px;
  text-align: center;
  color: var(--primary-color);
}

.section-intro {
  text-align: center;
  max-width: 750px;
  margin: 0 auto 36px auto;
  color: var(--text-muted);
}

/* Service Cards */
.grid-3 {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(280px, 1fr));
  gap: 24px;
}

.card {
  background-color: var(--surface-color);
  padding: 28px;
  border-radius: 8px;
  border: 1px solid var(--border-color);
  box-shadow: 0 2px 4px rgba(0,0,0,0.04);
}

.card h3 {
  font-size: 1.3rem;
  margin-bottom: 12px;
  color: var(--text-main);
  display: flex;
  align-items: center;
  gap: 8px;
}

.card-badge {
  background-color: #e0e7ff;
  color: var(--primary-color);
  font-size: 0.85rem;
  padding: 2px 8px;
  border-radius: 4px;
  font-weight: normal;
}

/* Pricing Box */
.pricing-box {
  background-color: var(--surface-color);
  border: 2px solid var(--primary-color);
  border-radius: 12px;
  padding: 36px;
  max-width: 700px;
  margin: 0 auto;
  text-align: center;
}

.price-tag {
  font-size: 2.2rem;
  font-weight: bold;
  color: var(--accent-color);
  margin: 16px 0 8px 0;
}

.price-sub {
  color: var(--text-muted);
  font-size: 0.95rem;
  margin-bottom: 20px;
}

/* Operator Info Block */
.operator-block {
  background-color: #f1f5f9;
  border-left: 4px solid var(--primary-color);
  padding: 24px;
  margin-top: 32px;
  border-radius: 0 8px 8px 0;
}

.operator-block dl {
  display: grid;
  grid-template-columns: 160px 1fr;
  gap: 10px 16px;
  margin-top: 12px;
}

.operator-block dt {
  font-weight: bold;
  color: var(--text-muted);
}

/* Form Styles */
.form-container {
  max-width: 640px;
  margin: 0 auto;
  background-color: var(--surface-color);
  padding: 32px;
  border-radius: 8px;
  border: 1px solid var(--border-color);
}

.form-group {
  margin-bottom: 20px;
}

.form-group label {
  display: block;
  font-weight: 600;
  margin-bottom: 8px;
}

.form-group input,
.form-group textarea,
.form-group select {
  width: 100%;
  padding: 12px;
  font-size: 1rem;
  border: 1px solid var(--border-color);
  border-radius: 4px;
  font-family: inherit;
}

.form-group small {
  display: block;
  color: var(--text-muted);
  font-size: 0.85rem;
  margin-top: 4px;
}

.form-checkbox {
  display: flex;
  align-items: flex-start;
  gap: 10px;
}

.form-checkbox input {
  width: 20px;
  height: 20px;
  margin-top: 4px;
}

.form-feedback {
  padding: 12px;
  margin-top: 16px;
  border-radius: 4px;
  display: none;
}

.form-feedback.error {
  display: block;
  background-color: #fee2e2;
  color: var(--error-color);
  border: 1px solid #fca5a5;
}

/* Footer */
.site-footer {
  background-color: #0f172a;
  color: #94a3b8;
  padding: 48px 0 24px 0;
  margin-top: 64px;
  font-size: 0.95rem;
}

.footer-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(220px, 1fr));
  gap: 32px;
  margin-bottom: 32px;
}

.site-footer h4 {
  color: #ffffff;
  margin-bottom: 16px;
  font-size: 1.1rem;
}

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

.site-footer li {
  margin-bottom: 8px;
}

.site-footer a {
  color: #cbd5e1;
  text-decoration: none;
}

.site-footer a:hover {
  text-decoration: underline;
  color: #ffffff;
}

.footer-bottom {
  border-top: 1px solid #334155;
  padding-top: 20px;
  text-align: center;
  font-size: 0.85rem;
}

/* Cookie Banner */
.cookie-banner {
  position: fixed;
  bottom: 0;
  left: 0;
  right: 0;
  background-color: #1e293b;
  color: #f8fafc;
  padding: 16px 20px;
  box-shadow: 0 -4px 12px rgba(0,0,0,0.2);
  z-index: 10000;
  display: none;
}

.cookie-banner-inner {
  max-width: 1100px;
  margin: 0 auto;
  display: flex;
  justify-content: space-between;
  align-items: center;
  flex-wrap: wrap;
  gap: 16px;
}

.cookie-banner p {
  font-size: 0.9rem;
  max-width: 750px;
  margin: 0;
}

.cookie-banner a {
  color: #93c5fd;
}

.cookie-btn-group {
  display: flex;
  gap: 10px;
}

.btn-cookie-accept {
  background-color: var(--accent-color);
  color: #ffffff;
  border: none;
  padding: 8px 16px;
  border-radius: 4px;
  font-weight: bold;
  cursor: pointer;
}

.btn-cookie-decline {
  background-color: transparent;
  color: #cbd5e1;
  border: 1px solid #64748b;
  padding: 8px 16px;
  border-radius: 4px;
  cursor: pointer;
}

/* Responsive */
@media (max-width: 768px) {
  body {
    font-size: 16px;
  }
  .nav-toggle {
    display: block;
  }
  .main-nav {
    display: none;
    position: absolute;
    top: 100%;
    left: 0;
    right: 0;
    background-color: var(--surface-color);
    border-bottom: 2px solid var(--border-color);
    padding: 16px 20px;
  }
  .main-nav.is-open {
    display: block;
  }
  .main-nav ul {
    flex-direction: column;
    gap: 12px;
  }
  .hero h1 {
    font-size: 1.75rem;
  }
  .operator-block dl {
    grid-template-columns: 1fr;
  }
}

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