:root {
  --navy: #0e2a4a;
  --navy-soft: #1a3a5f;
  --gold: #d4a017;
  --ink: #1a1a1a;
  --gray-700: #4a4a4a;
  --gray-500: #6b6b6b;
  --gray-300: #c8c8c8;
  --gray-100: #f3f4f6;
  --bg: #fbfaf8;
  --border: #e2e1dd;
  --max: 1080px;
}

* { box-sizing: border-box; }

html { scroll-behavior: smooth; }

body {
  margin: 0;
  font-family: "Hiragino Kaku Gothic ProN", "Yu Gothic", "Meiryo", sans-serif;
  color: var(--ink);
  background: var(--bg);
  line-height: 1.7;
  font-size: 16px;
  -webkit-font-smoothing: antialiased;
}

h1, h2, h3 { font-family: "Hiragino Mincho ProN", "Yu Mincho", serif; }
h1 { font-size: 2.4rem; font-weight: 600; line-height: 1.5; margin: 0 0 1.2rem; }
h2 { font-size: 1.7rem; font-weight: 600; margin: 0 0 1.5rem; }
h3 { font-size: 1.2rem; font-weight: 600; margin: 0 0 0.8rem; }

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

.btn-primary, .btn-secondary, .btn-ghost {
  display: inline-block;
  padding: 14px 28px;
  border-radius: 4px;
  text-decoration: none;
  font-weight: 600;
  font-size: 0.95rem;
  transition: all 0.2s;
  border: 1px solid transparent;
}
.btn-primary { background: var(--navy); color: #fff; }
.btn-primary:hover { background: var(--navy-soft); }
.btn-primary.large { padding: 18px 40px; font-size: 1.05rem; }
.btn-secondary { background: #fff; color: var(--navy); border-color: var(--navy); }
.btn-secondary:hover { background: var(--navy); color: #fff; }
.btn-ghost { background: transparent; color: var(--navy); border-color: var(--gray-300); padding: 10px 20px; font-size: 0.9rem; }
.btn-ghost:hover { border-color: var(--navy); }

.site-header {
  background: #fff;
  border-bottom: 1px solid var(--border);
  position: sticky;
  top: 0;
  z-index: 50;
}
.header-inner { display: flex; justify-content: space-between; align-items: center; padding: 16px 24px; }
.brand { font-weight: 700; color: var(--navy); letter-spacing: 0.05em; }

.hero {
  padding: 96px 0 80px;
  background: linear-gradient(180deg, #fff 0%, var(--bg) 100%);
  text-align: left;
}
.eyebrow {
  color: var(--gold);
  font-size: 0.85rem;
  letter-spacing: 0.15em;
  font-weight: 600;
  margin: 0 0 1.2rem;
  text-transform: uppercase;
}
.lead {
  font-size: 1.1rem;
  color: var(--gray-700);
  margin: 0 0 2.2rem;
  max-width: 640px;
}
.hero-cta { display: flex; gap: 16px; flex-wrap: wrap; margin-bottom: 1.5rem; }
.hero-note { color: var(--gold); font-size: 0.95rem; font-weight: 600; margin: 0; }

.problem { padding: 80px 0; background: #fff; }
.problem-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 24px;
  margin: 2.5rem 0;
}
.problem-card {
  background: var(--bg);
  border-left: 3px solid var(--gold);
  padding: 28px 24px;
}
.problem-num {
  color: var(--gold);
  font-family: "Hiragino Mincho ProN", serif;
  font-size: 1.5rem;
  font-weight: 700;
  margin-bottom: 0.8rem;
}
.problem-card p { color: var(--gray-700); margin: 0; font-size: 0.95rem; }
.problem-summary {
  background: var(--navy);
  color: #fff;
  padding: 28px 32px;
  border-radius: 4px;
  font-size: 1.05rem;
  margin: 0;
}

.about { padding: 80px 0; }
.ba-grid {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 24px;
  margin-top: 2rem;
}
.ba-card {
  padding: 32px 28px;
  border-radius: 4px;
  background: #fff;
  border: 1px solid var(--border);
}
.ba-card.after { background: var(--navy); color: #fff; border-color: var(--navy); }
.ba-label {
  font-size: 0.8rem;
  letter-spacing: 0.2em;
  font-weight: 700;
  margin-bottom: 1rem;
  color: var(--gray-500);
}
.ba-card.after .ba-label { color: var(--gold); }
.ba-card ul { margin: 0; padding-left: 1.2rem; }
.ba-card li { margin-bottom: 0.6rem; }

.layers { padding: 80px 0; background: #fff; }
.section-lead { color: var(--gray-700); margin: -0.5rem 0 2rem; max-width: 720px; }
.layer-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 24px;
}
.layer-card {
  background: var(--bg);
  padding: 32px 24px;
  border-top: 3px solid var(--navy);
}
.layer-num {
  color: var(--navy);
  font-size: 0.85rem;
  letter-spacing: 0.15em;
  font-weight: 700;
  margin-bottom: 0.8rem;
}
.layer-card p { color: var(--gray-700); margin: 0 0 1rem; font-size: 0.95rem; }
.layer-list { margin: 0; padding-left: 1.2rem; color: var(--gray-700); font-size: 0.9rem; }
.layer-list li { margin-bottom: 0.4rem; }

.badge-sample { padding: 80px 0; }
.badge-row {
  display: flex;
  justify-content: center;
  gap: 48px;
  margin: 2rem 0 1rem;
  flex-wrap: wrap;
}
.badge-mock { text-align: center; }
.badge-mock svg { width: 180px; height: 180px; }
.badge-caption { color: var(--gray-500); font-size: 0.85rem; margin: 0.5rem 0 0; }
.section-note { color: var(--gray-500); font-size: 0.9rem; text-align: center; margin: 1.5rem 0 0; }

.pricing { padding: 80px 0; background: #fff; }
.price-grid {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 24px;
  margin: 2rem 0 1.5rem;
}
.price-card {
  background: var(--bg);
  padding: 36px 32px;
  border: 1px solid var(--border);
}
.price-card.featured {
  background: var(--navy);
  color: #fff;
  border-color: var(--navy);
}
.price-card.featured .price-main,
.price-card.featured ul { color: #fff; }
.price-card.featured .price-sub { color: var(--gray-300); }
.price-tag {
  display: inline-block;
  background: var(--gold);
  color: var(--navy);
  font-size: 0.8rem;
  font-weight: 700;
  letter-spacing: 0.1em;
  padding: 4px 12px;
  margin-bottom: 1rem;
}
.price-card.sub .price-tag {
  background: var(--navy);
  color: #fff;
}
.price-sub-head {
  color: var(--gray-700);
  font-size: 0.95rem;
  margin: 0.5rem 0 1.2rem;
}
.price-main {
  font-family: "Hiragino Mincho ProN", serif;
  font-size: 1.6rem;
  color: var(--navy);
  font-weight: 600;
  margin: 0.5rem 0 0.2rem;
}
.price-sub { color: var(--gray-500); font-size: 0.85rem; margin: 0 0 1.2rem; }
.price-card ul { margin: 0; padding-left: 1.2rem; color: var(--gray-700); font-size: 0.95rem; }
.price-card li { margin-bottom: 0.4rem; }
.addon-list { list-style: none; padding-left: 0 !important; }
.addon-list li {
  padding: 14px 0;
  border-bottom: 1px solid var(--border);
  display: flex;
  flex-direction: column;
  gap: 4px;
}
.addon-list li:last-child { border-bottom: none; }
.addon-label { font-weight: 600; color: var(--navy); }
.addon-amt {
  color: var(--gold);
  font-family: "Hiragino Mincho ProN", serif;
  font-size: 1.05rem;
}
.addon-list small { color: var(--gray-500); font-size: 0.8rem; }
.price-note { color: var(--gray-500); font-size: 0.85rem; margin: 0; }

.subsidy { padding: 80px 0; }
.sim-grid {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 24px;
  margin: 2rem 0 1.5rem;
}
.sim-card {
  background: #fff;
  border: 1px solid var(--border);
  padding: 28px 28px 8px;
}
.sim-card h3 { margin-bottom: 0.3rem; color: var(--navy); }
.sim-label {
  color: var(--gray-500);
  font-size: 0.85rem;
  margin: 0 0 1rem;
}
.sim-card .subsidy-box {
  padding: 0;
  border: none;
  margin: 0;
}
@media (max-width: 768px) {
  .sim-grid { grid-template-columns: 1fr; }
}
.subsidy-box {
  background: #fff;
  border: 1px solid var(--border);
  padding: 32px 36px;
  margin: 2rem 0 1.5rem;
  max-width: 640px;
}
.subsidy-row {
  display: flex;
  justify-content: space-between;
  padding: 12px 0;
  border-bottom: 1px solid var(--border);
}
.subsidy-row:last-child { border-bottom: none; }
.subsidy-row.minus { color: var(--gold); }
.subsidy-row.total {
  font-weight: 700;
  font-size: 1.1rem;
  color: var(--navy);
  border-top: 2px solid var(--navy);
  margin-top: 8px;
  padding-top: 18px;
}
.subsidy-row .amount { font-family: "Hiragino Mincho ProN", serif; }
.subsidy-note { color: var(--gray-500); font-size: 0.85rem; margin: 0; max-width: 720px; }

.early { padding: 80px 0; background: var(--navy); color: #fff; }
.early h2 { color: #fff; }
.early .section-lead { color: var(--gray-300); }
.early-list { margin: 1.5rem 0 2rem; padding-left: 1.2rem; }
.early-list li { margin-bottom: 0.8rem; }
.early .btn-primary { background: var(--gold); color: var(--navy); }
.early .btn-primary:hover { background: #b88812; }

.faq { padding: 80px 0; background: #fff; }
.faq details {
  border-bottom: 1px solid var(--border);
  padding: 20px 0;
}
.faq summary {
  cursor: pointer;
  font-weight: 600;
  color: var(--navy);
  font-size: 1rem;
  list-style: none;
  position: relative;
  padding-right: 32px;
}
.faq summary::after {
  content: "+";
  position: absolute;
  right: 0;
  top: 0;
  font-size: 1.4rem;
  color: var(--gold);
  font-weight: 400;
}
.faq details[open] summary::after { content: "−"; }
.faq details p {
  color: var(--gray-700);
  margin: 0.8rem 0 0;
  font-size: 0.95rem;
}

.contact {
  padding: 96px 0;
  background: var(--bg);
}
.contact h2 { text-align: center; margin-bottom: 1rem; }
.contact-intro {
  text-align: center;
  max-width: 600px;
  margin: 0 auto 3rem;
  color: var(--gray-700);
}
.cta-tier-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 24px;
  margin-bottom: 2rem;
}
.cta-tier {
  background: #fff;
  border: 1px solid var(--border);
  padding: 32px 28px;
  display: flex;
  flex-direction: column;
  position: relative;
}
.cta-tier.featured {
  background: var(--navy);
  color: #fff;
  border-color: var(--navy);
}
.cta-tier.featured h3,
.cta-tier.featured .tier-desc,
.cta-tier.featured .tier-list,
.cta-tier.featured label { color: #fff; }
.cta-tier.featured .tier-step { color: var(--gold); }
.cta-tier.featured .tier-note { color: var(--gray-300); }
.tier-step {
  font-size: 0.8rem;
  font-weight: 700;
  letter-spacing: 0.15em;
  color: var(--gold);
  margin-bottom: 0.5rem;
}
.tier-badge {
  position: absolute;
  top: 16px;
  right: 16px;
  background: var(--gold);
  color: var(--navy);
  font-size: 0.7rem;
  font-weight: 700;
  letter-spacing: 0.05em;
  padding: 4px 10px;
  border-radius: 2px;
}
.cta-tier h3 {
  font-size: 1.2rem;
  margin-bottom: 0.8rem;
  color: var(--navy);
}
.tier-desc {
  color: var(--gray-700);
  font-size: 0.9rem;
  margin: 0 0 1.2rem;
}
.tier-list {
  margin: 0 0 1.5rem;
  padding-left: 1.2rem;
  color: var(--gray-700);
  font-size: 0.88rem;
}
.tier-list li { margin-bottom: 0.4rem; }
.tier-btn {
  width: 100%;
  text-align: center;
  margin-top: auto;
  padding: 14px 20px;
}
.cta-tier.featured .btn-primary {
  background: var(--gold);
  color: var(--navy);
}
.cta-tier.featured .btn-primary:hover {
  background: #b88812;
}
.tier-note {
  font-size: 0.78rem;
  color: var(--gray-500);
  margin: 0.8rem 0 0;
  text-align: center;
}
.cta-form {
  display: flex;
  flex-direction: column;
  gap: 10px;
  margin-top: 0.5rem;
}
.cta-form label {
  display: flex;
  flex-direction: column;
  font-size: 0.82rem;
  color: var(--gray-700);
  gap: 4px;
}
.cta-form input,
.cta-form select,
.cta-form textarea {
  padding: 10px 12px;
  border: 1px solid var(--gray-300);
  border-radius: 3px;
  font-size: 0.95rem;
  font-family: inherit;
  background: #fff;
  color: var(--ink);
}
.cta-form input:focus,
.cta-form select:focus,
.cta-form textarea:focus {
  outline: 2px solid var(--gold);
  outline-offset: 1px;
  border-color: var(--gold);
}
.cta-form .consent {
  flex-direction: row;
  align-items: center;
  gap: 8px;
  font-size: 0.82rem;
  margin-top: 4px;
}
.cta-form .consent input { width: auto; }
.cta-form button:disabled {
  opacity: 0.6;
  cursor: not-allowed;
}
.form-success {
  background: var(--bg);
  border: 1px solid var(--gold);
  padding: 24px 22px;
  margin-top: 0.5rem;
}
.form-success h4 {
  color: var(--navy);
  margin: 0 0 0.6rem;
  font-size: 1.1rem;
}
.cta-tier.featured .form-success {
  background: rgba(255,255,255,0.08);
  border-color: var(--gold);
}
.cta-tier.featured .form-success h4 { color: #fff; }
.cta-tier.featured .form-success p { color: var(--gray-300); }
.contact-note {
  color: var(--gray-500);
  font-size: 0.85rem;
  margin-top: 2rem;
  text-align: center;
}
@media (max-width: 1024px) {
  .cta-tier-grid { grid-template-columns: 1fr; }
}

.site-footer {
  padding: 32px 0;
  border-top: 1px solid var(--border);
  text-align: center;
  color: var(--gray-500);
  font-size: 0.85rem;
}
.site-footer a { color: var(--gray-700); text-decoration: none; margin: 0 4px; }
.site-footer a:hover { color: var(--navy); text-decoration: underline; }

.legal { padding: 64px 0 96px; background: #fff; }
.legal .container { max-width: 800px; }
.legal h1 {
  font-family: "Hiragino Mincho ProN", serif;
  font-size: 1.8rem;
  margin: 0 0 0.5rem;
}
.legal-meta {
  color: var(--gray-500);
  font-size: 0.85rem;
  margin: 0 0 2.5rem;
  border-bottom: 1px solid var(--border);
  padding-bottom: 1rem;
}
.legal h2 {
  font-family: "Hiragino Kaku Gothic ProN", sans-serif;
  font-size: 1.05rem;
  margin: 2rem 0 0.8rem;
  color: var(--navy);
  border-left: 3px solid var(--gold);
  padding-left: 12px;
}
.legal p, .legal ol, .legal ul {
  color: var(--ink);
  line-height: 1.9;
  font-size: 0.95rem;
}
.legal ol, .legal ul { padding-left: 1.5rem; margin: 0.5rem 0 1rem; }
.legal ol li, .legal ul li { margin-bottom: 0.4rem; }
.legal-contact {
  background: var(--bg);
  padding: 16px 20px;
  border-left: 3px solid var(--navy);
  margin: 1rem 0;
  font-size: 0.9rem;
}
.legal-footer {
  margin-top: 3rem;
  padding-top: 2rem;
  border-top: 1px solid var(--border);
  text-align: right;
  color: var(--gray-700);
  font-weight: 600;
}
.brand a { color: inherit; text-decoration: none; }

@media (max-width: 768px) {
  h1 { font-size: 1.7rem; }
  h2 { font-size: 1.4rem; }
  .hero { padding: 64px 0 56px; }
  .problem-grid, .layer-grid, .ba-grid, .price-grid {
    grid-template-columns: 1fr;
  }
  .badge-row { gap: 24px; }
}