:root {
  --canvas: #f7f5ee;
  --surface: #fffdf7;
  --surface-soft: #e9f0eb;
  --ink: #17302d;
  --muted: #526663;
  --brand: #173f3a;
  --brand-light: #d8e9df;
  --accent: #d7a932;
  --accent-dark: #8a6610;
  --line: #cad7d0;
  --white: #ffffff;
  --shadow: 0 20px 50px rgb(23 63 58 / 10%);
  --radius-large: 28px;
  --radius-medium: 18px;
  font-family: "Hiragino Sans", "Yu Gothic UI", "Yu Gothic", Meiryo, system-ui, sans-serif;
  color: var(--ink);
  background: var(--canvas);
  font-synthesis: none;
}

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

html {
  scroll-behavior: smooth;
}

body {
  min-width: 320px;
  margin: 0;
  background:
    radial-gradient(circle at 90% 4%, rgb(215 169 50 / 13%), transparent 28rem),
    var(--canvas);
  color: var(--ink);
  font-size: 1rem;
  line-height: 1.8;
  overflow-wrap: anywhere;
}

a {
  color: var(--brand);
  text-underline-offset: 0.2em;
  text-decoration-thickness: 0.08em;
}

a:hover {
  text-decoration-thickness: 0.14em;
}

a:focus-visible,
button:focus-visible {
  outline: 3px solid var(--accent);
  outline-offset: 4px;
  border-radius: 4px;
}

code {
  padding: 0.12em 0.38em;
  border: 1px solid var(--line);
  border-radius: 0.4rem;
  background: var(--surface-soft);
  font-family: ui-monospace, "SFMono-Regular", Consolas, monospace;
  font-size: 0.9em;
}

h1,
h2,
h3,
p {
  margin-top: 0;
}

h1,
h2,
h3 {
  line-height: 1.35;
  letter-spacing: 0.01em;
}

h1 {
  max-width: 14em;
  margin-bottom: 1.5rem;
  font-size: clamp(2.35rem, 6vw, 4.7rem);
  letter-spacing: -0.035em;
}

h2 {
  margin-bottom: 1rem;
  font-size: clamp(1.75rem, 4vw, 2.7rem);
}

h3 {
  margin-bottom: 0.65rem;
  font-size: 1.2rem;
}

.shell {
  width: min(1120px, calc(100% - 40px));
  margin-inline: auto;
}

.narrow {
  max-width: 780px;
}

.skip-link {
  position: fixed;
  top: 0.75rem;
  left: 0.75rem;
  z-index: 100;
  padding: 0.65rem 1rem;
  border-radius: 0.5rem;
  background: var(--white);
  box-shadow: var(--shadow);
  transform: translateY(-180%);
}

.skip-link:focus {
  transform: translateY(0);
}

.site-header {
  border-bottom: 1px solid rgb(23 63 58 / 11%);
  background: rgb(247 245 238 / 92%);
}

.header-inner,
.footer-inner {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 2rem;
  min-height: 76px;
}

.brand {
  display: inline-flex;
  align-items: center;
  gap: 0.75rem;
  color: var(--ink);
  font-weight: 800;
  line-height: 1.2;
  text-decoration: none;
}

.brand-mark {
  display: grid;
  width: 2.25rem;
  height: 2.25rem;
  place-items: center;
  border-radius: 50%;
  background: var(--brand);
  color: var(--white);
  font-family: Georgia, serif;
  font-size: 1.1rem;
}

nav,
.footer-links {
  display: flex;
  align-items: center;
  gap: 1.35rem;
}

nav a,
.footer-links a {
  font-size: 0.9rem;
  font-weight: 700;
}

.hero {
  display: grid;
  grid-template-columns: minmax(0, 1.3fr) minmax(280px, 0.7fr);
  gap: clamp(2rem, 7vw, 6rem);
  align-items: center;
  padding-block: clamp(4.5rem, 10vw, 8rem);
}

.eyebrow {
  margin-bottom: 0.9rem;
  color: var(--accent-dark);
  font-size: 0.75rem;
  font-weight: 900;
  letter-spacing: 0.18em;
}

.eyebrow-light {
  color: #f0ce71;
}

.status {
  display: inline-flex;
  align-items: center;
  gap: 0.55rem;
  margin-bottom: 1.5rem;
  padding: 0.38rem 0.8rem;
  border: 1px solid #d7c078;
  border-radius: 999px;
  background: #fff7d9;
  color: #6b5113;
  font-size: 0.85rem;
  font-weight: 800;
}

.status span {
  width: 0.55rem;
  height: 0.55rem;
  border-radius: 50%;
  background: var(--accent);
}

.lead {
  max-width: 46rem;
  color: var(--muted);
  font-size: clamp(1.05rem, 2.2vw, 1.25rem);
}

.hero-actions {
  display: flex;
  flex-wrap: wrap;
  gap: 0.8rem;
  margin-top: 2rem;
}

.button {
  display: inline-flex;
  min-height: 3.1rem;
  align-items: center;
  justify-content: center;
  padding: 0.65rem 1.25rem;
  border: 1px solid var(--brand);
  border-radius: 999px;
  font-weight: 800;
  text-decoration: none;
}

.button-primary {
  background: var(--brand);
  color: var(--white);
}

.button-secondary {
  background: transparent;
  color: var(--brand);
}

.backup-diagram {
  padding: 1.2rem;
  border: 1px solid var(--line);
  border-radius: var(--radius-large);
  background: var(--surface);
  box-shadow: var(--shadow);
}

.diagram-step {
  display: flex;
  gap: 1rem;
  align-items: flex-start;
  padding: 1.1rem;
  border-radius: var(--radius-medium);
  background: var(--surface-soft);
}

.diagram-step strong,
.diagram-step span {
  display: block;
}

.diagram-step div span {
  margin-top: 0.25rem;
  color: var(--muted);
  font-size: 0.86rem;
  line-height: 1.55;
}

.step-number {
  color: var(--accent-dark);
  font-family: Georgia, serif;
  font-size: 1.25rem;
  font-weight: 700;
}

.diagram-arrow {
  margin: 0.25rem 0 0.25rem 2rem;
  color: var(--accent-dark);
  font-weight: 900;
}

.section {
  padding-block: clamp(4rem, 8vw, 6.5rem);
}

.section-tint {
  border-block: 1px solid var(--line);
  background: var(--surface-soft);
}

.section-intro {
  max-width: 760px;
  color: var(--muted);
}

.card-grid {
  display: grid;
  grid-template-columns: repeat(3, minmax(0, 1fr));
  gap: 1.1rem;
  margin-top: 2.5rem;
}

.card {
  padding: clamp(1.4rem, 4vw, 2rem);
  border: 1px solid var(--line);
  border-radius: var(--radius-medium);
  background: var(--surface);
}

.card p {
  margin-bottom: 0;
  color: var(--muted);
}

.card-index {
  display: inline-block;
  margin-bottom: 1.5rem;
  color: var(--accent-dark);
  font-family: Georgia, serif;
  font-size: 1.4rem;
}

.section-dark {
  background: var(--brand);
  color: var(--white);
}

.split {
  display: grid;
  grid-template-columns: minmax(0, 0.85fr) minmax(0, 1.15fr);
  gap: clamp(2rem, 7vw, 6rem);
}

.scope-copy p:last-child,
.contact-card p:last-child,
.section-tint p:last-child,
#terms p:last-child {
  margin-bottom: 0;
}

.section-dark code {
  border-color: rgb(255 255 255 / 28%);
  background: rgb(255 255 255 / 11%);
  color: var(--white);
}

.contact-section {
  padding-top: 1rem;
}

.contact-card {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 2rem;
  padding: clamp(1.5rem, 5vw, 3rem);
  border: 1px solid #d7c078;
  border-radius: var(--radius-large);
  background: #fff7d9;
}

.contact-link {
  flex: none;
  font-weight: 800;
}

.policy-main {
  padding-bottom: 5rem;
}

.policy-hero {
  padding-block: clamp(4rem, 8vw, 7rem) clamp(2.5rem, 5vw, 4rem);
}

.policy-hero h1 {
  max-width: none;
}

.policy-date {
  display: inline-block;
  margin-top: 1rem;
  padding: 0.45rem 0.75rem;
  border: 1px solid #d7c078;
  border-radius: 0.6rem;
  background: #fff7d9;
  color: #6b5113;
  font-size: 0.9rem;
}

.policy-layout {
  display: grid;
  grid-template-columns: 230px minmax(0, 720px);
  gap: clamp(2rem, 7vw, 5rem);
  justify-content: center;
  align-items: start;
}

.policy-toc {
  position: sticky;
  top: 1.5rem;
  padding: 1.25rem;
  border: 1px solid var(--line);
  border-radius: var(--radius-medium);
  background: var(--surface);
  font-size: 0.85rem;
}

.policy-toc ol {
  margin: 0.75rem 0 0;
  padding-left: 1.25rem;
}

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

.policy-content {
  min-width: 0;
}

.policy-content section {
  padding-block: 1.5rem 2.5rem;
  border-top: 1px solid var(--line);
  scroll-margin-top: 1.5rem;
}

.policy-content section:first-child {
  border-top: 0;
}

.policy-content h2 {
  font-size: clamp(1.35rem, 3vw, 1.8rem);
}

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

.note {
  padding-left: 1rem;
  border-left: 3px solid var(--accent);
  color: var(--muted);
  font-size: 0.9rem;
}

.site-footer {
  border-top: 1px solid var(--line);
}

.site-footer p {
  margin: 0;
  color: var(--muted);
  font-size: 0.85rem;
}

@media (max-width: 760px) {
  .header-inner {
    min-height: auto;
    align-items: flex-start;
    flex-direction: column;
    gap: 0.8rem;
    padding-block: 1rem;
  }

  nav {
    width: 100%;
    gap: 1rem;
    overflow-x: auto;
  }

  nav a {
    flex: none;
  }

  .hero,
  .split,
  .policy-layout {
    grid-template-columns: 1fr;
  }

  .hero {
    padding-top: 3.5rem;
  }

  .card-grid {
    grid-template-columns: 1fr;
  }

  .policy-toc {
    position: static;
  }

  .contact-card,
  .footer-inner {
    align-items: flex-start;
    flex-direction: column;
  }

  .footer-inner {
    gap: 0.6rem;
    padding-block: 1.25rem;
  }
}

@media (max-width: 430px) {
  .shell {
    width: min(100% - 28px, 1120px);
  }

  h1 {
    font-size: 2.25rem;
  }

  .hero-actions,
  .button {
    width: 100%;
  }

  .contact-link {
    max-width: 100%;
  }
}

@media (prefers-reduced-motion: reduce) {
  html {
    scroll-behavior: auto;
  }
}

@media print {
  .site-header,
  .hero-actions,
  .policy-toc,
  .site-footer {
    display: none;
  }

  body {
    background: #fff;
    color: #000;
  }

  .policy-layout {
    display: block;
  }
}