:root {
  --guide-bg: #f7f3ec;
  --guide-paper: #ffffff;
  --guide-ink: #162033;
  --guide-muted: #657085;
  --guide-navy: #071d36;
  --guide-line: #d9d1c5;
  --guide-amber: #b8731d;
  --guide-amber-soft: #fff0d9;
  --guide-green: #176b4d;
  --guide-green-soft: #eaf7f1;
}

.guide-page {
  margin: 0;
  background: var(--guide-bg);
  color: var(--guide-ink);
  font-family: "Meiryo", "メイリオ", sans-serif;
  line-height: 1.8;
}

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

.guide-page a {
  color: #764708;
  overflow-wrap: anywhere;
  text-underline-offset: 3px;
}

.guide-page a:focus-visible,
.guide-page button:focus-visible,
.guide-page input:focus-visible {
  outline: 3px solid #e2a34f;
  outline-offset: 3px;
}

.guide-nav {
  background: var(--guide-navy);
  color: #fff;
}

.guide-nav-inner {
  display: flex;
  align-items: center;
  justify-content: space-between;
  width: min(1080px, calc(100% - 36px));
  min-height: 64px;
  margin: 0 auto;
  gap: 24px;
}

.guide-brand {
  color: #fff !important;
  font-weight: 900;
  letter-spacing: .06em;
  text-decoration: none;
  white-space: nowrap;
}

.guide-nav-links {
  display: flex;
  flex-wrap: wrap;
  justify-content: flex-end;
  gap: 8px 18px;
}

.guide-nav-links a {
  color: #dbe8f2;
  font-size: .82rem;
  font-weight: 700;
  text-decoration: none;
}

.guide-main {
  width: min(920px, calc(100% - 36px));
  margin: 0 auto;
  padding: 54px 0 76px;
}

.guide-hero {
  margin-bottom: 28px;
}

.guide-eyebrow {
  margin: 0 0 10px;
  color: var(--guide-amber);
  font-size: .78rem;
  font-weight: 900;
  letter-spacing: .12em;
  text-transform: uppercase;
}

.guide-hero h1 {
  margin: 0;
  max-width: 820px;
  font-size: clamp(2rem, 5vw, 3.4rem);
  line-height: 1.3;
}

.guide-lead {
  max-width: 780px;
  margin: 18px 0 0;
  color: var(--guide-muted);
  font-size: 1.04rem;
}

.guide-meta {
  margin: 16px 0 0;
  color: var(--guide-muted);
  font-size: .8rem;
}

.guide-panel {
  padding: clamp(24px, 5vw, 48px);
  border: 1px solid var(--guide-line);
  border-radius: 14px;
  background: var(--guide-paper);
  box-shadow: 0 14px 36px rgba(21, 32, 51, .06);
}

.guide-panel h2 {
  margin: 2.5em 0 .65em;
  padding-bottom: .35em;
  border-bottom: 1px solid var(--guide-line);
  font-size: clamp(1.25rem, 3vw, 1.6rem);
  line-height: 1.5;
}

.guide-panel h2:first-child {
  margin-top: 0;
}

.guide-panel h3 {
  margin: 1.7em 0 .5em;
  font-size: 1.08rem;
}

.guide-panel p,
.guide-panel ul,
.guide-panel ol,
.guide-panel dl {
  margin-top: .7em;
  margin-bottom: 1.1em;
}

.guide-panel ul,
.guide-panel ol {
  padding-left: 1.5em;
}

.guide-panel li + li {
  margin-top: .55em;
}

.guide-summary,
.guide-note {
  margin: 1.5em 0;
  padding: 16px 18px;
  border-left: 4px solid var(--guide-amber);
  background: var(--guide-amber-soft);
}

.guide-summary strong,
.guide-note strong {
  display: block;
  margin-bottom: 4px;
}

.guide-grid {
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: 14px;
  margin: 1.2em 0 1.8em;
}

.guide-card {
  padding: 18px;
  border: 1px solid var(--guide-line);
  border-radius: 10px;
  background: #fff;
}

.guide-card h3 {
  margin: 0 0 8px;
}

.guide-card p:last-child {
  margin-bottom: 0;
}

.guide-table-wrap {
  margin: 1.2em 0 1.8em;
  overflow-x: auto;
}

.guide-table {
  width: 100%;
  min-width: 680px;
  border-collapse: collapse;
  font-size: .9rem;
}

.guide-table th,
.guide-table td {
  padding: 12px;
  border: 1px solid var(--guide-line);
  text-align: left;
  vertical-align: top;
}

.guide-table th {
  background: #f2eee6;
}

.evidence-label {
  display: inline-flex;
  align-items: center;
  min-height: 28px;
  padding: 2px 9px;
  border: 1px solid var(--guide-green);
  border-radius: 999px;
  background: var(--guide-green-soft);
  color: var(--guide-green);
  font-size: .76rem;
  font-weight: 900;
}

.calculator {
  margin: 1.5em 0;
  padding: 22px;
  border: 1px solid var(--guide-line);
  border-radius: 12px;
  background: #fbfaf7;
}

.calculator-grid {
  display: grid;
  grid-template-columns: repeat(3, minmax(0, 1fr));
  gap: 12px;
}

.calculator fieldset {
  margin: 0 0 18px;
  padding: 0;
  border: 0;
}

.calculator legend {
  margin-bottom: 10px;
  font-weight: 900;
}

.calculator label {
  display: grid;
  gap: 5px;
  color: var(--guide-muted);
  font-size: .82rem;
  font-weight: 700;
}

.calculator input {
  width: 100%;
  min-height: 44px;
  padding: 8px 10px;
  border: 1px solid #aeb6c3;
  border-radius: 7px;
  background: #fff;
  color: var(--guide-ink);
  font: inherit;
}

.calculator button {
  min-height: 46px;
  padding: 10px 18px;
  border: 0;
  border-radius: 999px;
  background: var(--guide-navy);
  color: #fff;
  font: inherit;
  font-weight: 900;
  cursor: pointer;
}

.calculator-result {
  min-height: 56px;
  margin: 16px 0 0;
  padding: 14px 16px;
  border-radius: 9px;
  background: #eef2f6;
}

.calculator-result[data-state="ok"] {
  background: var(--guide-green-soft);
  color: #0f563e;
}

.calculator-result[data-state="ng"] {
  background: #fff0ed;
  color: #8a2e20;
}

.guide-related {
  display: grid;
  grid-template-columns: repeat(3, minmax(0, 1fr));
  gap: 12px;
  margin: 1.2em 0 0;
  padding: 0;
  list-style: none;
}

.guide-related a {
  display: flex;
  align-items: center;
  min-height: 54px;
  padding: 12px 14px;
  border: 1px solid var(--guide-line);
  border-radius: 9px;
  background: #fff;
  font-weight: 800;
  text-decoration: none;
}

.guide-footer {
  padding: 30px 18px 40px;
  background: var(--guide-navy);
  color: #c9dfe8;
  text-align: center;
  font-size: .8rem;
}

.guide-footer p {
  margin: 5px 0;
}

.guide-footer a {
  color: inherit;
}

@media (max-width: 760px) {
  .guide-nav-inner {
    align-items: flex-start;
    flex-direction: column;
    padding: 16px 0;
    gap: 10px;
  }

  .guide-nav-links {
    justify-content: flex-start;
  }

  .guide-main {
    padding-top: 40px;
  }

  .guide-grid,
  .guide-related,
  .calculator-grid {
    grid-template-columns: 1fr;
  }

  .guide-panel {
    border-radius: 10px;
  }
}