:root {
  --bg-color: #f8fafc;
  --surface-color: #ffffff;
  --text-main: #0f172a;
  --text-muted: #475569;
  --primary: #1e40af;
  --primary-hover: #1d4ed8;
  --primary-light: #eff6ff;
  --border-color: #cbd5e1;
  --accent: #2563eb;
  --radius: 10px;
  --max-width: 1080px;
  --font-family: "Hiragino Sans", "Hiragino Kaku Gothic ProN", "Yu Gothic", "Meiryo", sans-serif;
}

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

body {
  font-family: var(--font-family);
  background-color: var(--bg-color);
  color: var(--text-main);
  line-height: 1.8;
  font-size: 18px;
  -webkit-font-smoothing: antialiased;
}

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

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

a:focus-visible, button:focus-visible, input:focus-visible, textarea:focus-visible {
  outline: 3px solid #f59e0b;
  outline-offset: 2px;
}

.container {
  width: 100%;
  max-width: var(--max-width);
  margin: 0 auto;
  padding: 0 24px;
}

/* Header */
.site-header {
  background-color: var(--surface-color);
  border-bottom: 1px solid var(--border-color);
  position: sticky;
  top: 0;
  z-index: 40;
}

.header-inner {
  display: flex;
  justify-content: space-between;
  align-items: center;
  height: 80px;
}

.brand-logo {
  display: flex;
  align-items: center;
  gap: 12px;
  font-size: 22px;
  font-weight: 700;
  color: var(--text-main);
  text-decoration: none;
}

.brand-logo img {
  width: 36px;
  height: 36px;
}

.nav-menu {
  display: flex;
  list-style: none;
  gap: 24px;
  align-items: center;
}

.nav-link {
  color: var(--text-main);
  text-decoration: none;
  font-weight: 500;
  font-size: 17px;
  padding: 8px 12px;
  border-radius: 6px;
  transition: background-color 0.2s ease;
}

.nav-link:hover, .nav-link.active {
  background-color: var(--primary-light);
  color: var(--primary);
}

.nav-toggle {
  display: none;
  background: none;
  border: 1px solid var(--border-color);
  border-radius: 6px;
  padding: 8px 12px;
  font-size: 16px;
  cursor: pointer;
}

/* Hero */
.hero {
  padding: 64px 0;
  background: linear-gradient(180deg, #ffffff 0%, #eff6ff 100%);
  border-bottom: 1px solid var(--border-color);
}

.hero-content {
  max-width: 820px;
}

.hero-tag {
  display: inline-block;
  background-color: var(--primary-light);
  color: var(--primary);
  font-weight: 700;
  font-size: 15px;
  padding: 6px 14px;
  border-radius: 999px;
  border: 1px solid #bfdbfe;
  margin-bottom: 20px;
}

.hero-title {
  font-size: 38px;
  font-weight: 800;
  line-height: 1.35;
  margin-bottom: 24px;
  color: #0b192c;
  letter-spacing: -0.02em;
}

.hero-desc {
  font-size: 20px;
  color: var(--text-muted);
  margin-bottom: 36px;
}

.btn {
  display: inline-block;
  padding: 14px 28px;
  font-size: 18px;
  font-weight: 700;
  border-radius: var(--radius);
  text-decoration: none;
  cursor: pointer;
  border: none;
  text-align: center;
  transition: all 0.2s ease;
}

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

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

.btn-secondary {
  background-color: var(--surface-color);
  color: var(--primary);
  border: 1px solid var(--border-color);
  margin-left: 12px;
}

.btn-secondary:hover {
  background-color: #f1f5f9;
}

/* Sections */
.section {
  padding: 64px 0;
}

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

.section-header {
  margin-bottom: 40px;
  text-align: left;
}

.section-title {
  font-size: 30px;
  font-weight: 700;
  margin-bottom: 12px;
}

.section-subtitle {
  font-size: 18px;
  color: var(--text-muted);
}

/* Cards Grid */
.grid-3 {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
  gap: 28px;
}

.card {
  background-color: var(--surface-color);
  border: 1px solid var(--border-color);
  border-radius: var(--radius);
  padding: 32px;
  box-shadow: 0 1px 3px rgba(0,0,0,0.05);
}

.card-icon {
  font-size: 32px;
  margin-bottom: 16px;
  display: inline-block;
}

.card-title {
  font-size: 22px;
  font-weight: 700;
  margin-bottom: 14px;
}

.card-desc {
  font-size: 17px;
  color: var(--text-muted);
}

/* Pricing box */
.pricing-banner {
  background: #ffffff;
  border: 2px solid #bfdbfe;
  border-radius: var(--radius);
  padding: 36px;
  margin-top: 32px;
}

.price-display {
  font-size: 36px;
  font-weight: 800;
  color: var(--primary);
  margin: 16px 0;
}

.price-note {
  font-size: 15px;
  color: var(--text-muted);
}

/* Table */
.data-table {
  width: 100%;
  border-collapse: collapse;
  margin-top: 24px;
  background-color: var(--surface-color);
  border: 1px solid var(--border-color);
}

.data-table th, .data-table td {
  padding: 16px 20px;
  border-bottom: 1px solid var(--border-color);
  text-align: left;
  font-size: 16px;
}

.data-table th {
  background-color: #f1f5f9;
  width: 30%;
  font-weight: 700;
}

/* Form */
.form-box {
  background-color: var(--surface-color);
  border: 1px solid var(--border-color);
  border-radius: var(--radius);
  padding: 40px;
  max-width: 720px;
  margin: 0 auto;
}

.form-group {
  margin-bottom: 24px;
}

.form-label {
  display: block;
  font-weight: 700;
  margin-bottom: 8px;
  font-size: 17px;
}

.form-label .req {
  color: #dc2626;
  margin-left: 4px;
}

.form-control {
  width: 100%;
  padding: 14px 16px;
  font-size: 17px;
  border: 1px solid var(--border-color);
  border-radius: 6px;
  background-color: #ffffff;
  font-family: inherit;
}

.form-control:focus {
  border-color: var(--primary);
}

.form-help {
  font-size: 14px;
  color: var(--text-muted);
  margin-top: 6px;
}

.form-status {
  margin-top: 16px;
  padding: 14px;
  border-radius: 6px;
  display: none;
  font-size: 16px;
}

.form-status.error {
  display: block;
  background-color: #fef2f2;
  border: 1px solid #fecaca;
  color: #991b1b;
}

/* Footer */
.site-footer {
  background-color: #0f172a;
  color: #94a3b8;
  padding: 56px 0 32px;
  font-size: 15px;
  margin-top: 64px;
}

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

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

.footer-grid {
  display: grid;
  grid-template-columns: 2fr 1fr 1fr;
  gap: 40px;
  margin-bottom: 40px;
}

.footer-col h3 {
  color: #ffffff;
  font-size: 18px;
  margin-bottom: 16px;
}

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

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

.footer-bottom {
  border-top: 1px solid #334155;
  padding-top: 24px;
  font-size: 14px;
  display: flex;
  justify-content: space-between;
  flex-wrap: wrap;
  gap: 16px;
}

/* Cookie Banner */
.cookie-banner {
  position: fixed;
  bottom: 0;
  left: 0;
  right: 0;
  background: #ffffff;
  border-top: 2px solid var(--primary);
  box-shadow: 0 -4px 16px rgba(0,0,0,0.12);
  padding: 20px 24px;
  z-index: 100;
  display: none;
}

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

.cookie-text {
  font-size: 15px;
  color: var(--text-main);
  max-width: 720px;
}

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

.cookie-btn {
  padding: 8px 18px;
  font-size: 15px;
  font-weight: 700;
  border-radius: 6px;
  cursor: pointer;
  border: none;
}

.cookie-accept {
  background-color: var(--primary);
  color: #fff;
}

.cookie-decline {
  background-color: #e2e8f0;
  color: var(--text-main);
}

@media (max-width: 768px) {
  .hero-title { font-size: 28px; }
  .hero-desc { font-size: 18px; }
  .btn { display: block; width: 100%; margin: 8px 0; }
  .btn-secondary { margin-left: 0; }
  .nav-menu {
    display: none;
    position: absolute;
    top: 80px;
    left: 0;
    right: 0;
    background-color: #ffffff;
    flex-direction: column;
    padding: 24px;
    border-bottom: 1px solid var(--border-color);
  }
  .nav-menu.open { display: flex; }
  .nav-toggle { display: block; }
  .footer-grid { grid-template-columns: 1fr; }
}

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