:root {
  --bg: #f8fbff;
  --bg-strong: #eef5fb;
  --surface: #ffffff;
  --ink: #0f172a;
  --ink-soft: #4b5563;
  --primary: #1da1f2;
  --primary-deep: #087bb8;
  --accent: #2bd4ff;
  --border: #e5e7eb;
  --warning-bg: #fff7ed;
  --warning-border: #fbbf24;
  --shadow: 0 18px 40px rgba(15, 23, 42, 0.06);
  --radius: 14px;
  --radius-sm: 10px;
}

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

body {
  font-family: "BIZ UDPGothic", "Hiragino Sans", "Yu Gothic", "Meiryo", sans-serif;
  color: var(--ink);
  background:
    linear-gradient(180deg, #ffffff 0%, var(--bg) 24%, var(--bg-strong) 100%),
    linear-gradient(120deg, rgba(29, 161, 242, 0.12), rgba(43, 212, 255, 0.08)),
    repeating-linear-gradient(90deg, rgba(15, 23, 42, 0.04) 0 1px, transparent 1px 44px),
    repeating-linear-gradient(0deg, rgba(15, 23, 42, 0.04) 0 1px, transparent 1px 44px);
  line-height: 1.7;
  letter-spacing: 0.01em;
}

main {
  position: relative;
  overflow: hidden;
}

main::before,
main::after {
  content: "";
  position: absolute;
  inset: 0;
  z-index: 0;
  pointer-events: none;
}

main::before {
  background:
    repeating-linear-gradient(120deg, rgba(29, 161, 242, 0.18) 0 1px, transparent 1px 140px),
    repeating-linear-gradient(300deg, rgba(43, 212, 255, 0.16) 0 1px, transparent 1px 140px);
  opacity: 0.45;
}

main::after {
  background:
    linear-gradient(90deg, rgba(255, 255, 255, 0.6) 0%, transparent 28%, transparent 72%, rgba(255, 255, 255, 0.6) 100%),
    linear-gradient(180deg, rgba(255, 255, 255, 0.75) 0%, transparent 38%, rgba(255, 255, 255, 0.75) 100%);
  mix-blend-mode: screen;
  opacity: 0.45;
}

header {
  position: static;
  background: rgba(255, 255, 255, 0.9);
  backdrop-filter: blur(12px);
  border-bottom: 1px solid rgba(226, 232, 240, 0.8);
}

.header-inner {
  max-width: 1100px;
  margin: 0 auto;
  padding: 18px 24px;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 16px;
}

.brand {
  display: flex;
  align-items: center;
  gap: 12px;
  font-weight: 700;
  font-size: 1.2rem;
  color: var(--primary-deep);
}

.brand svg,
.brand img {
  width: 36px;
  height: 36px;
}

.tagline {
  font-size: 0.9rem;
  color: #64748b;
  padding-left: 16px;
  border-left: 1px solid #dbe2ea;
  white-space: nowrap;
}

section {
  position: relative;
  z-index: 1;
  max-width: 1100px;
  margin: 0 auto;
  padding: 64px 24px;
}

.hero {
  text-align: center;
  padding-top: 80px;
  padding-bottom: 90px;
}

.hero h1 {
  font-family: "BIZ UDPMincho", "Yu Mincho", "Hiragino Mincho ProN", serif;
  font-size: clamp(2rem, 3.6vw, 2.7rem);
  line-height: 1.35;
  margin-bottom: 20px;
}

.hero p {
  color: var(--ink-soft);
  max-width: 720px;
  margin: 0 auto 32px;
  font-size: 1.08rem;
}

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

.btn {
  border: none;
  padding: 14px 30px;
  border-radius: 999px;
  font-weight: 700;
  font-size: 1rem;
  text-decoration: none;
  cursor: pointer;
  transition: transform 0.2s ease, box-shadow 0.2s ease;
  box-shadow: 0 12px 24px rgba(29, 161, 242, 0.22);
}

.btn-primary {
  background: linear-gradient(135deg, var(--primary), #5ad9ff);
  color: #fff;
}

.btn-secondary {
  background: #e2e8f0;
  color: #1f2937;
  box-shadow: none;
}

.btn:hover {
  transform: translateY(-2px);
}

.hero-visual {
  margin-top: 48px;
  display: flex;
  justify-content: center;
}

.hero-visual svg {
  max-width: 520px;
  width: 100%;
  height: auto;
  filter: drop-shadow(0 18px 30px rgba(15, 23, 42, 0.12));
}

.section-title {
  text-align: center;
  font-size: clamp(1.4rem, 2.5vw, 2rem);
  margin-bottom: 28px;
  font-family: "BIZ UDPMincho", "Yu Mincho", serif;
}

.section-text {
  color: var(--ink-soft);
  margin-bottom: 18px;
}

.surface {
  background: var(--surface);
  border-radius: var(--radius);
  box-shadow: var(--shadow);
  border: 1px solid rgba(226, 232, 240, 0.8);
}

.features-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(240px, 1fr));
  gap: 22px;
  margin-top: 36px;
}

.card {
  background: var(--surface);
  padding: 28px;
  border-radius: var(--radius-sm);
  border: 1px solid rgba(226, 232, 240, 0.9);
  box-shadow: 0 12px 24px rgba(15, 23, 42, 0.05);
}

.card h3 {
  font-size: 1.1rem;
  color: var(--primary-deep);
  margin-bottom: 12px;
}

.steps {
  background: linear-gradient(180deg, rgba(14, 165, 233, 0.08), rgba(14, 165, 233, 0.02));
  border-radius: var(--radius);
}

.step-list {
  margin-top: 24px;
  display: grid;
  gap: 22px;
}

.step-item {
  display: grid;
  grid-template-columns: 46px 1fr;
  gap: 18px;
  align-items: flex-start;
}

.step-num {
  width: 40px;
  height: 40px;
  border-radius: 50%;
  background: linear-gradient(135deg, var(--primary), var(--accent));
  color: #fff;
  font-weight: 700;
  display: grid;
  place-items: center;
  box-shadow: 0 8px 16px rgba(14, 165, 233, 0.2);
}

.pricing-table {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(260px, 1fr));
  gap: 24px;
  margin-top: 36px;
}

.price-card {
  position: relative;
  background: var(--surface);
  border-radius: var(--radius);
  padding: 30px;
  border: 1px solid var(--border);
  text-align: center;
}

.price-card.featured {
  border: 2px solid var(--primary);
  box-shadow: 0 18px 35px rgba(14, 165, 233, 0.18);
  transform: translateY(-6px);
}

.price-tag {
  position: absolute;
  top: 0;
  left: 0;
  width: 100%;
  padding: 6px 0;
  font-size: 0.85rem;
  background: var(--primary);
  color: #fff;
  border-radius: var(--radius) var(--radius) 0 0;
}

.amount {
  font-size: 2.4rem;
  font-weight: 700;
  margin: 18px 0;
  color: var(--ink);
}

.amount .strike {
  text-decoration: line-through;
  margin-left: 8px;
  font-size: 1rem;
  color: #94a3b8;
}

.unit {
  font-size: 1rem;
  color: #6b7280;
  margin-left: 6px;
}

.price-period {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  margin: -6px auto 18px;
  padding: 5px 14px;
  border-radius: 999px;
  border: 1px solid rgba(14, 165, 233, 0.25);
  background: rgba(14, 165, 233, 0.08);
  color: #0c4a6e;
  font-size: 0.86rem;
  font-weight: 600;
  letter-spacing: 0.02em;
}

.price-card ul {
  list-style: none;
  text-align: left;
  margin: 18px 0 24px;
  color: #334155;
}

.price-card li {
  display: flex;
  gap: 8px;
  margin-bottom: 8px;
  font-size: 0.95rem;
}

.trust-box {
  padding: 30px;
}

.trust-list {
  list-style: none;
  display: grid;
  gap: 16px;
}

.trust-list strong {
  color: var(--ink);
}

.faq-list {
  display: grid;
  gap: 18px;
  margin-top: 32px;
}

.faq-item {
  padding-bottom: 18px;
  border-bottom: 1px dashed #d7dde5;
}

.faq-q {
  font-weight: 700;
  display: block;
  margin-bottom: 6px;
}

.faq-a {
  color: var(--ink-soft);
}

.disclaimer-box {
  background: var(--warning-bg);
  border: 1px solid var(--warning-border);
  border-radius: var(--radius);
  padding: 28px;
}

footer {
  background: #0f172a;
  color: #e2e8f0;
  text-align: center;
  padding: 50px 24px;
}

footer p {
  font-size: 0.9rem;
  opacity: 0.85;
  margin-bottom: 5px;
}

.reveal {
  opacity: 0;
  transform: translateY(16px);
  animation: rise 0.8s ease forwards;
}

.delay-1 { animation-delay: 0.1s; }
.delay-2 { animation-delay: 0.2s; }
.delay-3 { animation-delay: 0.3s; }
.delay-4 { animation-delay: 0.4s; }

@keyframes rise {
  to {
    opacity: 1;
    transform: translateY(0);
  }
}

@keyframes pulse {
  0%, 100% { transform: scale(0.98); opacity: 0.6; }
  50% { transform: scale(1.06); opacity: 1; }
}

@keyframes scan {
  0% { transform: translateY(0); opacity: 0; }
  20% { opacity: 0.5; }
  80% { opacity: 0.5; }
  100% { transform: translateY(140px); opacity: 0; }
}

@media (prefers-reduced-motion: reduce) {
  .reveal {
    opacity: 1;
    transform: none;
    animation: none;
  }
}

@media (max-width: 720px) {
  .header-inner {
    flex-direction: column;
    align-items: flex-start;
  }

  .tagline {
    border-left: none;
    padding-left: 0;
  }

  section {
    padding: 48px 18px;
  }

  .hero {
    padding-top: 60px;
  }

  .step-item {
    grid-template-columns: 1fr;
  }
}