:root {
  color-scheme: light;
  --bg: #f7f8fc;
  --bg-invert: #000000;
  --text: #000000;
  --text-invert: #ffffff;
  --line: #000000;
  --accent: #ffd84d;
  --accent-2: #7dd3fc;
  --soft-hero: #eef6ff;
  --soft-section: #f5f3ff;
  --soft-cta: #fff8e6;
  --soft-footer: #f3f4f6;
  --max: 1080px;
}

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

html,
body {
  margin: 0;
  padding: 0;
}

body {
  font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, "Hiragino Kaku Gothic ProN",
    "Hiragino Sans", "Noto Sans JP", "Yu Gothic UI", sans-serif;
  color: var(--text);
  background: var(--bg);
  line-height: 1.7;
}

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

.container {
  width: min(100% - 2rem, var(--max));
  margin-inline: auto;
}

.site-header {
  position: sticky;
  top: 0;
  z-index: 20;
  background: rgba(255, 255, 255, 0.92);
  border-bottom: 2px solid var(--line);
  color: #000000;
  backdrop-filter: blur(6px);
}

.nav-wrap {
  min-height: 68px;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 1rem;
}

.logo {
  display: inline-flex;
  align-items: center;
}

.logo-chip {
  display: inline-flex;
  align-items: center;
  padding: 0.45rem 0.7rem;
  border-radius: 999px;
  background: #000000;
  border: 2px solid #ffffff;
  box-shadow: 0 0 0 3px #000000, 0 0 0 5px var(--accent);
}

.logo-image {
  display: block;
  width: 64px;
  height: auto;
}

.nav {
  display: flex;
  align-items: center;
  gap: 0.95rem;
  font-size: 0.95rem;
}

.nav a {
  font-weight: 700;
  color: #000000;
}

.nav .btn {
  color: #000000;
}

.link-muted {
  color: #000000;
  text-decoration: underline;
  text-underline-offset: 3px;
}

.hero {
  padding: 5.2rem 0 3.4rem;
  background: linear-gradient(180deg, var(--soft-hero) 0%, #ffffff 100%);
  color: #000000;
}

.eyebrow {
  margin: 0 0 0.65rem;
  font-size: 0.85rem;
  font-weight: 800;
  letter-spacing: 0.03em;
  text-transform: uppercase;
  color: var(--accent);
}

h1,
h2,
h3 {
  line-height: 1.28;
  margin: 0;
}

h1 {
  font-size: clamp(2rem, 4.4vw, 3.2rem);
}

h2 {
  font-size: clamp(1.4rem, 2.8vw, 2rem);
  margin-bottom: 1rem;
  display: flex;
  align-items: center;
  gap: 0.65rem;
}

h2::before {
  content: "";
  width: 14px;
  height: 14px;
  border: 2px solid currentColor;
  background: var(--accent);
  flex: 0 0 auto;
}

h3 {
  font-size: 1.1rem;
}

.card h3,
.panel h3 {
  display: flex;
  align-items: center;
  gap: 0.5rem;
}

.card h3::before,
.panel h3::before {
  content: "";
  width: 10px;
  height: 10px;
  border-radius: 999px;
  background: var(--accent-2);
  border: 2px solid currentColor;
}

.lead {
  max-width: 780px;
  margin: 1rem 0 0;
  color: #000000;
  font-size: clamp(1.02rem, 1.25vw, 1.18rem);
}

.cta-row {
  margin-top: 1.5rem;
  display: flex;
  flex-wrap: wrap;
  gap: 0.7rem;
}

.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  padding: 0.8rem 1.15rem;
  border-radius: 999px;
  border: 2px solid #000000;
  background: #ffffff;
  color: #000000;
  font-weight: 800;
  box-shadow: 0 0 0 2px #ffffff inset, 0 0 0 1px #000000, 3px 3px 0 #000000;
  transition: transform 0.14s ease, box-shadow 0.14s ease, background-color 0.14s ease, color 0.14s ease;
}

.btn::after {
  content: ">";
  margin-left: 0.5rem;
}

.btn-secondary {
  background: #000000;
  border-color: #000000;
  color: #ffffff;
  box-shadow: 0 0 0 2px #000000 inset, 0 0 0 1px #000000, 3px 3px 0 var(--accent);
}

.btn-sm {
  padding: 0.5rem 0.9rem;
  font-size: 0.9rem;
  border-width: 2px;
}

.btn:hover {
  transform: translate(-1px, -1px);
  box-shadow: 0 0 0 2px #ffffff inset, 0 0 0 1px #000000, 4px 4px 0 #000000;
}

.btn-secondary:hover {
  box-shadow: 0 0 0 2px #000000 inset, 0 0 0 1px #000000, 4px 4px 0 var(--accent);
}

.badges {
  margin: 1.25rem 0 0;
  padding: 0;
  list-style: none;
  display: flex;
  flex-wrap: wrap;
  gap: 0.55rem;
}

.badges li {
  border: 2px solid #000000;
  border-radius: 999px;
  padding: 0.3rem 0.75rem;
  font-size: 0.85rem;
  font-weight: 700;
  color: #000000;
  background: #ffffff;
}

.badges li::before {
  content: "+ ";
  color: var(--accent);
}

.section {
  padding: 3rem 0;
}

.section-muted {
  background: var(--soft-section);
  color: #000000;
}

.section-muted h2::before {
  border-color: #000000;
}

.list {
  margin: 0;
  padding-left: 0;
  list-style: none;
}

.list li {
  position: relative;
  padding-left: 1.25rem;
  font-weight: 600;
}

.list li::before {
  content: "";
  position: absolute;
  left: 0;
  top: 0.72em;
  width: 8px;
  height: 8px;
  background: currentColor;
  transform: rotate(45deg);
}

.list li + li {
  margin-top: 0.55rem;
}

.grid {
  display: grid;
  gap: 0.9rem;
  grid-template-columns: repeat(2, minmax(0, 1fr));
}

.card,
.panel,
.pricing-card,
.faq details {
  border: 2px solid #000000;
  border-radius: 14px;
  padding: 1rem;
  background: #ffffff;
  color: #000000;
}

.card p,
.faq p,
.note {
  color: #000000;
}

.dual {
  display: grid;
  gap: 1rem;
  grid-template-columns: repeat(2, minmax(0, 1fr));
}

.steps {
  margin: 0.6rem 0 0;
  padding-left: 1.2rem;
  font-weight: 700;
}

.steps li + li {
  margin-top: 0.35rem;
}

.note {
  margin-top: -0.2rem;
  font-size: 0.92rem;
  font-weight: 700;
}

.pricing-card {
  margin-top: 1rem;
}

.pricing-card dl {
  margin: 0;
}

.pricing-card dt {
  font-weight: 700;
}

.pricing-card dd {
  margin: 0.1rem 0 0.8rem;
  font-weight: 800;
  font-size: 1.05rem;
}

.faq {
  display: grid;
  gap: 0.7rem;
}

.faq summary {
  cursor: pointer;
  font-weight: 800;
}

.final-cta {
  text-align: center;
  background: var(--soft-cta);
  color: #000000;
  border-top: 2px solid #000000;
  border-bottom: 2px solid #000000;
}

.final-cta .cta-row {
  justify-content: center;
}

.final-cta .btn {
  min-width: 230px;
}

.final-cta p {
  margin: 0.7rem 0 0;
  color: #000000;
  font-weight: 600;
}

.site-footer {
  border-top: 2px solid #000000;
  padding: 1.25rem 0 2.5rem;
  background: var(--soft-footer);
}

.footer-links {
  display: flex;
  flex-wrap: wrap;
  gap: 0.8rem 1.2rem;
  font-size: 0.92rem;
  color: #000000;
  font-weight: 700;
}

.footer-links a {
  text-decoration: underline;
  text-underline-offset: 3px;
}

@media (max-width: 820px) {
  .grid,
  .dual {
    grid-template-columns: 1fr;
  }
}

@media (max-width: 680px) {
  .nav {
    display: none;
  }

  .hero {
    padding-top: 4.4rem;
  }
}