/* 構造用CSS。モノクロの最小表示のみを持ちます。 */
.container { width: min(var(--container-width), calc(100% - 3rem)); margin-inline: auto; }
.narrow { max-width: 800px; }
.site-header { position: sticky; top: 0; z-index: 100; border-bottom: 1px solid var(--color-line); }
html { scroll-padding-top: 112px; }
.skip-link { z-index: 110; }
.header-inner { display: flex; align-items: center; justify-content: space-between; gap: 2rem; min-height: 96px; padding-block: 1rem; }
.site-logo { font-size: 1.125rem; font-weight: 700; text-decoration: none; }
.site-navigation ul, .footer-links { display: flex; flex-wrap: wrap; gap: 1.5rem; margin: 0; padding: 0; list-style: none; }
.site-navigation a, .footer-links a { display: block; font-size: .8rem; font-weight: 600; text-decoration: none; }
.site-navigation a span, .footer-links a span { display: block; font-size: .7rem; font-weight: 400; }
.site-navigation a { text-align: center; transition: transform .24s ease, color .24s ease; }
.site-navigation a span { transition: color .24s ease; }
.site-navigation a:focus-visible { transform: translateY(-3px); color: #59416e; }
.site-navigation a:focus-visible span { color: #59416e; }
@media (hover: hover) and (pointer: fine) {
  .site-navigation li:hover > a { transform: translateY(-3px); color: #59416e; }
  .site-navigation li:hover > a span { color: #59416e; }
}
@media (prefers-reduced-motion: reduce) {
  .site-navigation a, .site-navigation a span { transition: none; }
  .site-navigation li:hover > a, .site-navigation a:focus-visible { transform: none; }
}
.site-navigation [aria-current="page"] { text-decoration: none; }
.menu-toggle { border: 1px solid var(--color-line); background: #fff; padding: .5rem .75rem; }
.page-heading { padding-block: 3rem; background: var(--color-soft); }
.page-heading h1 { margin-bottom: 0; }
.eyebrow { margin-bottom: .5rem; font-size: .75rem; font-weight: 700; letter-spacing: .12em; }
.breadcrumb { padding-block: 1rem; font-size: .75rem; }
.breadcrumb ol { display: flex; flex-wrap: wrap; gap: .75rem; list-style: none; padding: 0; margin-bottom: 0; }
.breadcrumb li + li::before { content: "/"; margin-right: .75rem; }
.content-section { padding-block: var(--section-space); }
.section-muted { background: var(--color-soft); }
.split-layout { display: grid; grid-template-columns: 1fr 1fr; align-items: center; gap: clamp(1.5rem, 4vw, 4rem); }
.split-layout > *, .content-grid > * { min-width: 0; }
.media-placeholder { display: grid; place-items: center; aspect-ratio: 4 / 3; padding: 2rem; border: 1px dashed #aaa; background: #eee; color: var(--color-muted); text-align: center; }
.map-placeholder { aspect-ratio: 16 / 7; }
.placeholder-copy, .empty-state { color: var(--color-muted); }
.content-grid { display: grid; grid-template-columns: repeat(2, minmax(0, 1fr)); gap: 2rem; margin-block: 1.5rem; }
.content-block { border: 1px solid var(--color-line); padding: 1.5rem; }
.content-block p:last-child { margin-bottom: 0; }
.button { display: inline-flex; justify-content: center; align-items: center; min-height: 48px; padding: .75rem 1.5rem; border: 1px solid var(--color-accent); background: var(--color-accent); color: #fff; text-decoration: none; }
.button-secondary { background: #fff; color: var(--color-text); }
.text-link { display: inline-block; margin-top: 1rem; }
.contact-cta { text-align: center; border-top: 1px solid var(--color-line); }
.feature-list { padding-left: 1.5rem; }
.step-list { padding-left: 1.5rem; }
.step-list li { padding: .5rem 0 1rem .5rem; }
.step-list h3 { margin-bottom: .25rem; }
.definition-list { margin-block: 1.5rem; }
.definition-list > div { display: grid; grid-template-columns: minmax(120px, 1fr) 3fr; gap: 1.5rem; padding-block: 1rem; border-bottom: 1px solid var(--color-line); }
.definition-list dt { font-weight: 600; }
.definition-list dd { margin: 0; white-space: pre-wrap; min-width: 0; }
.form-notice { padding: 1rem; border: 1px solid var(--color-line); background: #fff; font-size: .875rem; }
.form-field { margin-block: 1.5rem; }
.form-field > label { display: block; margin-bottom: .5rem; font-weight: 600; }
.field-required, .field-optional { font-size: .75rem; margin-left: .5rem; font-weight: 400; }
input:not([type="checkbox"]), select, textarea { display: block; width: 100%; padding: .75rem; border: 1px solid #999; border-radius: 0; background: #fff; color: var(--color-text); }
.form-field > .checkbox-label { display: flex; gap: .75rem; align-items: flex-start; font-weight: 400; }
.checkbox-label input { width: 20px; height: 20px; flex: 0 0 20px; margin-top: .3rem; }
.privacy-disclosure { padding: 1rem; border: 1px solid var(--color-line); }
.privacy-disclosure summary { cursor: pointer; }
.privacy-disclosure p { margin-block: 1rem 0; }
.contact-preview { padding-top: 2rem; }
.site-footer { padding-block: 2.5rem; border-top: 1px solid var(--color-line); }
.footer-links { margin-block: 1.5rem; }
.footer-note { color: var(--color-muted); font-size: .75rem; }
.back-to-top { font-size: .875rem; }
@media (max-width: 900px) {
  .header-inner { gap: 1rem; }
  .site-navigation ul { gap: 1rem; }
  .site-logo { font-size: 1rem; }
}
@media (max-width: 768px) {
  html { scroll-padding-top: 92px; }
  .container { width: calc(100% - 2rem); }
  .header-inner { flex-wrap: wrap; min-height: 76px; }
  .site-navigation { width: 100%; }
  .site-navigation ul { display: grid; grid-template-columns: repeat(2, minmax(0, 1fr)); }
  .site-navigation[data-collapsible="true"][data-open="false"] { display: none; }
  .split-layout, .content-grid { grid-template-columns: 1fr; }
  .media-placeholder { max-height: 300px; }
  .definition-list > div { grid-template-columns: 1fr; gap: .25rem; }
  .page-heading { padding-block: 2rem; }
  .footer-links { display: grid; grid-template-columns: repeat(2, minmax(0, 1fr)); }
}

/* BELPの既存法定表記・プライバシー本文 */
.legal-content dt { font-weight: 700; margin-top: 1.5rem; }
.legal-content dd { margin: .5rem 0 0; overflow-wrap: anywhere; }