:root {
  --font-main: -apple-system, BlinkMacSystemFont, "Hiragino Kaku Gothic ProN", "Meiryo", "BIZ UDPGothic", sans-serif;
  --color-bg: #f8fafc;
  --color-surface: #ffffff;
  --color-text: #1e293b;
  --color-muted: #475569;
  --color-border: #cbd5e1;
  --color-primary: #0284c7;
  --color-primary-hover: #0369a1;
  --color-accent: #0f766e;
  --color-header-bg: #0f172a;
  --color-header-text: #f8fafc;
  --color-success: #15803d;
  --color-error: #b91c1c;
  --radius: 8px;
  --shadow: 0 4px 6px -1px rgba(0, 0, 0, 0.1), 0 2px 4px -2px rgba(0, 0, 0, 0.1);
  --max-width: 1120px;
}

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

body {
  font-family: var(--font-main);
  background-color: var(--color-bg);
  color: var(--color-text);
  font-size: 1.125rem; /* 18px для четкой читаемости аудиторией 45+ */
  line-height: 1.75;
  -webkit-font-smoothing: antialiased;
}

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

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

:focus-visible {
  outline: 3px solid #0284c7;
  outline-offset: 3px;
}

.skip-link {
  position: absolute;
  top: -999px;
  left: 10px;
  background: #000;
  color: #fff;
  padding: 8px 16px;
  z-index: 10000;
}
.skip-link:focus {
  top: 10px;
}

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

/* Header */
.site-header {
  background-color: var(--color-header-bg);
  color: var(--color-header-text);
  padding: 1rem 0;
  position: sticky;
  top: 0;
  z-index: 999;
  box-shadow: var(--shadow);
}
.header-inner {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 1rem;
}
.brand-group {
  display: flex;
  align-items: center;
  gap: 0.75rem;
  text-decoration: none;
  color: #ffffff;
}
.brand-title {
  font-size: 1.35rem;
  font-weight: 700;
  letter-spacing: 0.05em;
}
.brand-subtitle {
  font-size: 0.85rem;
  color: #94a3b8;
  display: block;
}

.site-nav ul {
  display: flex;
  list-style: none;
  gap: 1.25rem;
}
.site-nav a {
  color: #f1f5f9;
  text-decoration: none;
  font-weight: 600;
  font-size: 1rem;
  padding: 0.4rem 0.6rem;
  border-radius: var(--radius);
}
.site-nav a:hover, .site-nav a[aria-current="page"] {
  background-color: #1e293b;
  color: #38bdf8;
}

.menu-toggle {
  display: none;
  background: transparent;
  border: 1px solid #94a3b8;
  color: #fff;
  padding: 0.4rem 0.8rem;
  font-size: 1rem;
  border-radius: var(--radius);
  cursor: pointer;
}

/* Hero Section */
.hero {
  background: linear-gradient(180deg, #0f172a 0%, #1e293b 100%);
  color: #ffffff;
  padding: 4rem 0 3.5rem;
}
.hero h1 {
  font-size: 2.25rem;
  line-height: 1.35;
  margin-bottom: 1.5rem;
  font-weight: 800;
}
.hero p.lead {
  font-size: 1.25rem;
  line-height: 1.7;
  color: #cbd5e1;
  margin-bottom: 2rem;
  max-width: 800px;
}
.hero-badges {
  display: flex;
  flex-wrap: wrap;
  gap: 0.75rem;
  margin-bottom: 2rem;
}
.badge {
  background: rgba(255, 255, 255, 0.12);
  border: 1px solid rgba(255, 255, 255, 0.25);
  padding: 0.4rem 1rem;
  border-radius: 999px;
  font-size: 0.95rem;
  color: #e2e8f0;
}

/* Buttons */
.btn {
  display: inline-block;
  font-family: inherit;
  font-size: 1.1rem;
  font-weight: 700;
  padding: 0.9rem 1.8rem;
  border-radius: var(--radius);
  text-decoration: none;
  cursor: pointer;
  border: none;
  transition: background-color 0.2s ease;
}
.btn-primary {
  background-color: #0284c7;
  color: #ffffff;
}
.btn-primary:hover {
  background-color: #0369a1;
  color: #ffffff;
}
.btn-secondary {
  background-color: #334155;
  color: #ffffff;
}
.btn-secondary:hover {
  background-color: #475569;
  color: #ffffff;
}

/* Sections */
.section {
  padding: 4rem 0;
}
.section-light {
  background-color: #ffffff;
}
.section-title {
  font-size: 1.85rem;
  margin-bottom: 1rem;
  text-align: center;
}
.section-intro {
  text-align: center;
  max-width: 720px;
  margin: 0 auto 2.5rem;
  color: var(--color-muted);
}

/* Grid & Cards */
.grid-3 {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
  gap: 1.75rem;
}
.card {
  background-color: var(--color-surface);
  border: 1px solid var(--color-border);
  border-radius: var(--radius);
  padding: 2rem;
  box-shadow: var(--shadow);
}
.card h3 {
  font-size: 1.35rem;
  margin-bottom: 1rem;
  color: var(--color-text);
}
.card p {
  color: var(--color-muted);
  font-size: 1.05rem;
  margin-bottom: 1rem;
}
.card-price {
  font-size: 1.2rem;
  font-weight: 700;
  color: var(--color-accent);
  margin-top: 1rem;
  border-top: 1px solid var(--color-border);
  padding-top: 0.75rem;
}

/* Steps */
.steps-list {
  list-style: none;
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(240px, 1fr));
  gap: 1.5rem;
  counter-reset: step-counter;
}
.step-item {
  counter-increment: step-counter;
  background: #ffffff;
  padding: 1.75rem;
  border-radius: var(--radius);
  border-left: 5px solid var(--color-primary);
  box-shadow: var(--shadow);
}
.step-item::before {
  content: "ステップ " counter(step-counter);
  display: block;
  font-size: 0.85rem;
  font-weight: 700;
  color: var(--color-primary);
  text-transform: uppercase;
  margin-bottom: 0.5rem;
}
.step-item h4 {
  font-size: 1.2rem;
  margin-bottom: 0.5rem;
}

/* Forms */
.form-box {
  background: #ffffff;
  border: 1px solid var(--color-border);
  border-radius: var(--radius);
  padding: 2.5rem;
  max-width: 680px;
  margin: 0 auto;
  box-shadow: var(--shadow);
}
.form-group {
  margin-bottom: 1.5rem;
}
.form-group label {
  display: block;
  font-weight: 700;
  margin-bottom: 0.5rem;
  font-size: 1rem;
}
.form-group .required {
  color: var(--color-error);
  margin-left: 0.25rem;
}
.form-input, .form-textarea, .form-select {
  width: 100%;
  padding: 0.85rem;
  font-size: 1.05rem;
  font-family: inherit;
  border: 1.5px solid var(--color-border);
  border-radius: var(--radius);
  background-color: #fff;
}
.form-input:focus, .form-textarea:focus, .form-select:focus {
  border-color: var(--color-primary);
}
.form-note {
  font-size: 0.9rem;
  color: var(--color-muted);
  margin-top: 0.4rem;
}
.form-alert {
  padding: 1rem;
  border-radius: var(--radius);
  margin-bottom: 1.5rem;
  font-size: 1rem;
}
.alert-error {
  background-color: #fee2e2;
  color: #991b1b;
  border: 1px solid #f87171;
}
.alert-info {
  background-color: #e0f2fe;
  color: #075985;
  border: 1px solid #7dd3fc;
}

/* Tables / Tokushoho */
.legal-table {
  width: 100%;
  border-collapse: collapse;
  margin-top: 1.5rem;
  background: #ffffff;
}
.legal-table th, .legal-table td {
  padding: 1rem 1.25rem;
  border: 1px solid var(--color-border);
  text-align: left;
  vertical-align: top;
}
.legal-table th {
  background-color: #f1f5f9;
  width: 30%;
  font-weight: 700;
}

/* FAQ */
.faq-list {
  max-width: 800px;
  margin: 0 auto;
  display: flex;
  flex-direction: column;
  gap: 1.25rem;
}
.faq-item {
  background: #ffffff;
  border: 1px solid var(--color-border);
  border-radius: var(--radius);
  padding: 1.5rem;
}
.faq-question {
  font-size: 1.2rem;
  font-weight: 700;
  margin-bottom: 0.75rem;
  color: var(--color-text);
  display: flex;
  align-items: baseline;
  gap: 0.5rem;
}
.faq-question::before {
  content: "Q.";
  color: var(--color-primary);
  font-weight: 800;
}
.faq-answer {
  color: var(--color-muted);
  display: flex;
  align-items: baseline;
  gap: 0.5rem;
}
.faq-answer::before {
  content: "A.";
  color: var(--color-accent);
  font-weight: 800;
}

/* Operator Banner */
.operator-card {
  background: #f1f5f9;
  border-left: 4px solid var(--color-primary);
  padding: 1.5rem;
  border-radius: var(--radius);
  margin-top: 2rem;
}
.operator-card h4 {
  margin-bottom: 0.5rem;
  font-size: 1.15rem;
}

/* Footer */
.site-footer {
  background-color: var(--color-header-bg);
  color: #94a3b8;
  padding: 3rem 0 2rem;
  font-size: 0.95rem;
  border-top: 1px solid #334155;
}
.footer-nav {
  display: flex;
  flex-wrap: wrap;
  gap: 1.25rem;
  list-style: none;
  margin-bottom: 1.5rem;
}
.footer-nav a {
  color: #cbd5e1;
  text-decoration: none;
}
.footer-nav a:hover {
  color: #38bdf8;
  text-decoration: underline;
}
.footer-copy {
  border-top: 1px solid #1e293b;
  padding-top: 1.5rem;
  display: flex;
  flex-wrap: wrap;
  justify-content: space-between;
  align-items: center;
  gap: 1rem;
}

/* Cookie Banner */
.cookie-banner {
  position: fixed;
  bottom: 0;
  left: 0;
  right: 0;
  background-color: #0f172a;
  color: #ffffff;
  padding: 1.25rem 1.5rem;
  box-shadow: 0 -4px 10px rgba(0, 0, 0, 0.2);
  z-index: 10000;
  display: none;
}
.cookie-banner.show {
  display: block;
}
.cookie-content {
  max-width: var(--max-width);
  margin: 0 auto;
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  justify-content: space-between;
  gap: 1.25rem;
}
.cookie-text {
  flex: 1 1 500px;
  font-size: 0.95rem;
  line-height: 1.6;
}
.cookie-actions {
  display: flex;
  gap: 0.75rem;
}

/* Responsive */
@media (max-width: 768px) {
  .menu-toggle {
    display: block;
  }
  .site-nav {
    display: none;
    width: 100%;
    margin-top: 1rem;
  }
  .site-nav.open {
    display: block;
  }
  .site-nav ul {
    flex-direction: column;
    gap: 0.5rem;
  }
  .site-nav a {
    display: block;
    padding: 0.75rem;
  }
  .header-inner {
    flex-wrap: wrap;
  }
  .hero h1 {
    font-size: 1.75rem;
  }
  .legal-table th, .legal-table td {
    display: block;
    width: 100%;
  }
  .legal-table th {
    background-color: #e2e8f0;
  }
}

@media (prefers-reduced-motion: reduce) {
  *, *::before, *::after {
    animation-duration: 0.01ms !important;
    animation-iteration-count: 1 !important;
    transition-duration: 0.01ms !important;
  }
}