:root {
  --bg-color: #0b1329;
  --panel-bg: #152238;
  --text-main: #f8fafc;
  --text-muted: #cbd5e1;
  --primary-color: #38bdf8;
  --primary-hover: #0284c7;
  --accent-color: #f59e0b;
  --border-color: #334155;
  --validity-bg: #0d2744;
  --validity-border: #0284c7;
  --card-shadow: 0 10px 30px -10px rgba(0, 0, 0, 0.5);
}

body {
  margin: 0;
  font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, "Helvetica Neue", Arial, sans-serif;
  background-color: var(--bg-color);
  background-image: radial-gradient(circle at 50% 0%, #1e293b 0%, #0b1329 80%);
  color: var(--text-main);
  line-height: 1.6;
}

a {
  text-decoration: none;
  color: inherit;
}

/* Header */
.lp-header {
  display: flex;
  justify-content: space-between;
  align-items: center;
  padding: 16px 32px;
  background-color: rgba(11, 19, 41, 0.9);
  backdrop-filter: blur(12px);
  position: sticky;
  top: 0;
  z-index: 100;
  border-bottom: 1px solid var(--border-color);
}
.header-logo {
  font-size: 1.25rem;
  font-weight: bold;
  letter-spacing: 0.5px;
}
.btn-link {
  color: var(--text-main);
  font-weight: 600;
}
.btn-link:hover {
  color: var(--primary-color);
}

/* ヘッダー用強調ボタン */
.btn-header-action {
  display: inline-block;
  background: linear-gradient(135deg, #38bdf8 0%, #0284c7 100%);
  color: #ffffff !important;
  padding: 8px 20px;
  border-radius: 8px;
  font-weight: bold;
  font-size: 0.9rem;
  transition: all 0.2s ease;
  box-shadow: 0 4px 12px rgba(2, 132, 199, 0.35);
}
.btn-header-action:hover {
  transform: translateY(-1px);
  box-shadow: 0 6px 16px rgba(2, 132, 199, 0.55);
}

/* Hero Section */
.hero-section {
  padding: 70px 20px 40px;
  text-align: center;
}
.hero-title {
  font-size: 2.3rem;
  margin-bottom: 20px;
  line-height: 1.4;
  font-weight: 800;
}
.hero-title .highlight {
  color: var(--primary-color);
  text-shadow: 0 0 20px rgba(56, 189, 248, 0.4);
}
.hero-subtitle {
  font-size: 1.1rem;
  color: var(--text-muted);
  max-width: 680px;
  margin: 0 auto 36px;
  line-height: 1.7;
}
.hero-buttons {
  display: flex;
  gap: 16px;
  justify-content: center;
  margin-bottom: 40px;
}
.btn-primary-large, .btn-secondary-large {
  padding: 14px 32px;
  border-radius: 8px;
  font-size: 1rem;
  font-weight: bold;
  transition: all 0.2s ease;
}
.btn-primary-large {
  background: linear-gradient(135deg, #38bdf8 0%, #0284c7 100%);
  color: white;
  box-shadow: 0 4px 14px rgba(2, 132, 199, 0.4);
}
.btn-primary-large:hover {
  transform: translateY(-2px);
  box-shadow: 0 6px 20px rgba(2, 132, 199, 0.6);
}
.btn-secondary-large {
  background-color: var(--panel-bg);
  border: 1px solid var(--border-color);
  color: var(--text-main);
}
.btn-secondary-large:hover {
  background-color: var(--border-color);
}
.hero-image-wrapper {
  max-width: 840px;
  margin: 0 auto;
}
.preview-img {
  width: 100%;
  height: auto;
  border-radius: 12px;
  border: 1px solid rgba(255, 255, 255, 0.15);
  box-shadow: var(--card-shadow);
  display: block;
}

/* Section Common */
.section-title {
  text-align: center;
  font-size: 1.9rem;
  margin-bottom: 48px;
  padding-top: 60px;
  font-weight: 800;
}

/* Features List */
.features-section {
  max-width: 960px;
  margin: 0 auto;
  padding: 0 20px;
}
.features-list {
  display: flex;
  flex-direction: column;
  gap: 48px;
}
.feature-item {
  display: flex;
  align-items: center;
  gap: 40px;
  background-color: var(--panel-bg);
  padding: 36px;
  border-radius: 16px;
  border: 1px solid var(--border-color);
  box-shadow: var(--card-shadow);
}
.feature-item.reverse {
  flex-direction: row-reverse;
}
.feature-text {
  flex: 1;
}
.feature-badge {
  display: inline-block;
  background-color: rgba(56, 189, 248, 0.15);
  color: var(--primary-color);
  border: 1px solid rgba(56, 189, 248, 0.3);
  font-size: 0.8rem;
  font-weight: bold;
  padding: 4px 12px;
  border-radius: 12px;
  margin-bottom: 12px;
}
.feature-text h3 {
  margin: 0 0 12px 0;
  font-size: 1.35rem;
  color: #ffffff;
}
.feature-text p {
  margin: 0;
  color: var(--text-muted);
  font-size: 0.98rem;
  line-height: 1.7;
}
.feature-media {
  flex: 1;
}

@media (max-width: 768px) {
  .feature-item, .feature-item.reverse {
    flex-direction: column;
  }
}

/* Pricing Section */
.pricing-section {
  padding: 0 20px 60px;
  max-width: 880px;
  margin: 0 auto;
}
.pricing-lead {
  text-align: center;
  color: var(--text-muted);
  margin-top: -32px;
  margin-bottom: 40px;
  font-size: 1rem;
}
.pricing-grid {
  display: flex;
  justify-content: center;
  gap: 28px;
  flex-wrap: wrap;
}
.pricing-card {
  background-color: var(--panel-bg);
  border: 1px solid var(--border-color);
  border-radius: 16px;
  padding: 36px 28px;
  width: 100%;
  max-width: 350px;
  text-align: center;
  position: relative;
  display: flex;
  flex-direction: column;
  box-shadow: var(--card-shadow);
}
.pricing-card.recommended {
  border: 2px solid var(--primary-color);
  background-color: #1a2c4e;
}
.recommended-badge {
  position: absolute;
  top: -14px;
  left: 50%;
  transform: translateX(-50%);
  background: linear-gradient(135deg, #10b981 0%, #059669 100%);
  color: white;
  padding: 4px 16px;
  border-radius: 12px;
  font-size: 0.82rem;
  font-weight: bold;
  box-shadow: 0 4px 10px rgba(16, 185, 129, 0.3);
}
.plan-name { font-size: 1.5rem; margin: 0 0 8px; color: #ffffff; }
.plan-desc { font-size: 0.88rem; color: var(--text-muted); margin: 0; }
.plan-price { margin: 24px 0; }
.currency { font-size: 1.3rem; vertical-align: top; }
.amount { font-size: 3.2rem; font-weight: bold; color: #ffffff; }
.tax { font-size: 0.85rem; color: var(--text-muted); }

.btn-buy {
  display: block;
  padding: 12px 0;
  border-radius: 8px;
  font-weight: bold;
  border: 1px solid var(--border-color);
  margin-top: auto;
  transition: all 0.2s ease;
}
.btn-buy:hover {
  background-color: var(--border-color);
}
.btn-buy-primary {
  background: linear-gradient(135deg, #38bdf8 0%, #0284c7 100%);
  border: none;
  color: white;
  box-shadow: 0 4px 12px rgba(2, 132, 199, 0.3);
}
.btn-buy-primary:hover {
  box-shadow: 0 6px 16px rgba(2, 132, 199, 0.5);
}

/* Validity Explanation */
.validity-explanation {
  margin-top: 60px;
  background-color: var(--validity-bg);
  border: 1px solid var(--validity-border);
  border-radius: 16px;
  padding: 32px;
  box-shadow: var(--card-shadow);
}
.validity-title {
  margin: 0 0 12px 0;
  font-size: 1.15rem;
  color: var(--primary-color);
  text-align: center;
  font-weight: bold;
}
.validity-desc {
  text-align: center;
  font-size: 0.98rem;
  margin-bottom: 28px;
  color: var(--text-main);
  line-height: 1.7;
}

.timeline-container {
  display: flex;
  align-items: center;
  justify-content: center;
  gap: 12px;
  margin-bottom: 24px;
}
.timeline-step {
  background-color: var(--panel-bg);
  border: 1px solid var(--border-color);
  border-radius: 10px;
  padding: 14px 16px;
  text-align: center;
  flex: 1;
  max-width: 200px;
}
.step-purchase {
  border-color: var(--primary-color);
  background-color: rgba(56, 189, 248, 0.08);
}
.step-header { font-weight: bold; font-size: 1rem; margin-bottom: 4px; color: #ffffff; }
.step-time { font-size: 0.82rem; color: var(--text-muted); }
.step-status { font-size: 0.82rem; margin-top: 8px; font-weight: bold; color: var(--primary-color); }
.timeline-arrow-right {
  color: var(--text-muted);
  font-size: 1.2rem;
}

.example-box {
  background-color: rgba(0,0,0,0.3);
  border-radius: 8px;
  padding: 14px 18px;
  font-size: 0.88rem;
  color: var(--text-muted);
  border-left: 3px solid var(--primary-color);
}

@media (max-width: 640px) {
  .timeline-container { flex-direction: column; }
  .timeline-arrow-right { transform: rotate(90deg); margin: 4px 0; }
  .timeline-step { width: 100%; max-width: none; }
}

/* Comparison Table */
.comparison-section {
  max-width: 800px;
  margin: 0 auto;
  padding: 0 20px 60px;
}
.table-wrapper {
  border-radius: 12px;
  overflow: hidden;
  border: 1px solid var(--border-color);
}
.comparison-table {
  width: 100%;
  border-collapse: collapse;
}
.comparison-table th, .comparison-table td {
  padding: 16px;
  border-bottom: 1px solid var(--border-color);
  text-align: left;
  font-size: 0.92rem;
}
.comparison-table th { background-color: var(--panel-bg); color: #ffffff; }
.pro-col { color: var(--primary-color); background-color: rgba(56, 189, 248, 0.06); }

/* 最下部CTAセクション */
.bottom-cta-section {
  padding: 60px 20px;
  text-align: center;
  background: rgba(21, 34, 56, 0.6);
  border-top: 1px solid var(--border-color);
  margin-top: 40px;
}
.bottom-cta-title {
  font-size: 1.6rem;
  margin-bottom: 24px;
  color: #ffffff;
  font-weight: bold;
}

/* Footer */
.lp-footer {
  text-align: center;
  padding: 40px 20px;
  border-top: 1px solid var(--border-color);
  background-color: var(--panel-bg);
}
.footer-links {
  display: flex;
  justify-content: center;
  gap: 24px;
  margin-bottom: 20px;
}
.footer-links a { color: var(--text-muted); font-size: 0.9rem; }
.footer-links a:hover { color: var(--primary-color); }
.copyright { color: var(--text-muted); font-size: 0.85rem; margin: 0; }

.hidden { display: none !important; }