/* The same quiet, tactile palette carries from the homepage into every chapter. */
body.interior-site {
    --paper: #f5f1e8;
    --ink: #2b362f;
    --forest: #1b2b23;
    --bronze: #998159;
    --muted: #6c7167;
    --rule: #2b362f2b;
    margin: 0;
    padding-top: 82px;
    background: var(--paper);
    color: var(--ink);
    font-family: 'Noto Sans JP', sans-serif;
    font-weight: 400;
    line-height: 1.85;
    -webkit-font-smoothing: antialiased;
}
.interior-site *, .interior-site *::before, .interior-site *::after { box-sizing: border-box; }
.interior-site h1, .interior-site h2 { font-family: 'Noto Serif JP', serif; font-weight: 300; }
.interior-site :where(a) { color: inherit; text-decoration: none; }
.interior-site :where(button) { font: inherit; min-height: 44px; cursor: pointer; }
.interior-site button, .interior-site a { -webkit-tap-highlight-color: transparent; }
.interior-site :is(a, button, input, textarea, select, summary):focus-visible { outline: 2px solid #b28c48; outline-offset: 5px; }
.interior-site [id] { scroll-margin-top: 90px; }
.interior-site img { max-width: 100%; }
.interior-site .fade-section { opacity: 1; transform: none; }
.interior-site .interior-wrap { width: min(1200px, calc(100% - 112px)); margin-inline: auto; }
.interior-site .interior-eyebrow { margin: 0; color: #79643f; font-size: 10px; font-weight: 400; line-height: 1.7; letter-spacing: .2em; }
.interior-site .interior-button {
    display: inline-flex;
    align-items: center;
    justify-content: space-between;
    gap: 36px;
    min-height: 52px;
    padding: 12px 22px;
    border: 1px solid #2b362f59;
    background: transparent;
    color: var(--ink);
    font-family: 'Noto Sans JP', sans-serif;
    font-size: 12px;
    font-weight: 400;
    line-height: 1.6;
    letter-spacing: .06em;
    text-decoration: none;
    transition: background .2s, color .2s, border-color .2s;
}
.interior-site .interior-button:hover { background: var(--forest); border-color: var(--forest); color: var(--paper); }
.interior-site .interior-button > span[aria-hidden] { font-size: 20px; line-height: 1; }
.interior-site .interior-breadcrumb { display: flex; align-items: center; flex-wrap: wrap; gap: 8px 12px; color: var(--muted); padding-block: 20px; font-size: 10px; line-height: 1.8; letter-spacing: .04em; }
/* 押せる範囲は 44px。負の余白で、見た目の位置と行の高さは変えない。 */
.interior-site .interior-breadcrumb a { display: inline-flex; align-items: center; min-height: 44px; margin: -8px; padding-inline: 8px; }
.interior-site .interior-breadcrumb a:hover { color: var(--ink); text-decoration: underline; text-underline-offset: 5px; }
.interior-site .interior-breadcrumb [aria-current] { color: var(--ink); }
.interior-site .skip-content, .interior-site .interior-skip { position: fixed; z-index: 100; top: -100px; left: 20px; padding: 12px 20px; background: var(--paper); color: var(--ink); }
.interior-site .skip-content:focus, .interior-site .interior-skip:focus { top: 12px; }

/* Deliberately separate names keep the homepage menu and its controls untouched. */
.interior-nav {
    position: fixed;
    z-index: 60;
    inset: 0 0 auto;
    height: 82px;
    display: flex;
    align-items: center;
    gap: 32px;
    padding-inline: 42px;
    background: #1b2b23;
    color: #f5f1e8;
    box-shadow: 0 1px 0 #bfb19133;
    transition: box-shadow .2s;
}
.interior-nav.is-scrolled { box-shadow: 0 1px 0 #bfb19144, 0 7px 24px #182b2110; }
.interior-nav a { color: inherit; text-decoration: none; }
.interior-brand { display: flex; align-items: center; min-height: 44px; flex-shrink: 0; margin-right: auto; }
.interior-brand img { display: block; width: 168px; height: 48px; object-fit: contain; }
.interior-nav-links { display: flex; align-items: center; gap: 28px; }
.interior-nav-links a { position: relative; display: inline-flex; align-items: center; min-height: 44px; padding-block: 12px; font-size: 12px; white-space: nowrap; letter-spacing: .04em; }
.interior-nav-links a::after { position: absolute; content: ''; inset: auto 0 3px; height: 1px; background: #d3b786; transform: scaleX(0); transform-origin: left; transition: transform .2s; }
.interior-nav-links a:hover::after, .interior-nav-links a[aria-current]::after { transform: scaleX(1); }
.interior-nav-shop { display: inline-flex; align-items: center; justify-content: space-between; gap: 20px; flex-shrink: 0; min-height: 44px; padding: 9px 17px; border: 1px solid #d3c6a366; font-size: 12px; line-height: 1.5; letter-spacing: .04em; white-space: nowrap; transition: background .2s; }
.interior-nav-shop > span { font-size: 18px; }
.interior-nav-shop:hover { background: #d3c6a31c; }
.interior-menu-toggle { display: none; }
.interior-menu[hidden] { display: none; }
.interior-menu { position: absolute; inset: 100% 0 auto; max-height: calc(100vh - 82px); max-height: calc(100dvh - 82px); overflow-y: auto; overscroll-behavior: contain; padding: 28px 32px; color: #2b362f; background: #f5f1e8; border-top: 1px solid #bfb1914d; box-shadow: 0 18px 24px #14211926; }
.interior-menu-intro { margin: 0 0 16px; color: #707566; font-size: 11px; letter-spacing: .08em; }
.interior-menu-main > a { display: flex; justify-content: space-between; align-items: center; gap: 16px; min-height: 58px; padding-block: 18px; border-top: 1px solid #d9d3c5; font-family: 'Noto Serif JP', serif; font-size: 22px; font-weight: 300; line-height: 1.6; }
.interior-menu-main > a > span[aria-hidden] { font-size: 20px; }
.interior-menu-main small { display: block; margin-top: 6px; color: #6c7167; font-family: 'Noto Sans JP', sans-serif; font-size: 10px; line-height: 1.7; letter-spacing: .04em; }
.interior-menu a[aria-current] { text-decoration: underline; text-decoration-color: #aa9366; text-underline-offset: 6px; text-decoration-thickness: 1px; }
.interior-menu-about { display: flex; flex-wrap: wrap; column-gap: 26px; padding: 0 0 16px; }
.interior-menu-about > a { display: inline-flex; align-items: center; min-height: 44px; font-size: 12px; }
.interior-menu-more { display: grid; grid-template-columns: 1fr 1fr; gap: 20px; border-top: 1px solid #d9d3c5; padding-top: 12px; }
.interior-menu-more > a { display: flex; justify-content: space-between; align-items: center; min-height: 48px; font-size: 12px; }
.interior-menu a:hover { color: #897344; }


@media (max-width: 1120px) {
    .interior-nav { gap: 24px; padding-inline: 32px; }
    .interior-nav-links { gap: 22px; }
    .interior-brand img { width: 150px; }
}
@media (max-width: 1000px) {
    .interior-site .interior-wrap { width: calc(100% - 64px); }
    .interior-nav-links { display: none; }
    .interior-menu-toggle { display: flex; flex-direction: column; align-items: center; justify-content: center; gap: 8px; width: 48px; min-height: 48px; padding: 4px 0; border: 0; background: transparent; color: inherit; font-size: 9px; line-height: 1.25; letter-spacing: .02em; }
    .interior-menu-lines { position: relative; display: block; width: 21px; height: 12px; }
    .interior-menu-lines::before, .interior-menu-lines::after { position: absolute; content: ''; left: 0; width: 21px; height: 1px; background: currentColor; transition: transform .2s; }
    .interior-menu-lines::before { top: 2px; }
    .interior-menu-lines::after { bottom: 2px; }
    .is-menu-open .interior-menu-lines::before { transform: translateY(3.5px) rotate(45deg); }
    .is-menu-open .interior-menu-lines::after { transform: translateY(-3.5px) rotate(-45deg); }
}
@media (max-width: 640px) {
    body.interior-site { padding-top: 68px; }
    .interior-site [id] { scroll-margin-top: 78px; }
    .interior-site .interior-wrap { width: calc(100% - 40px); }
    .interior-site .interior-eyebrow { font-size: 9px; letter-spacing: .16em; }
    .interior-site .interior-breadcrumb { gap: 6px 9px; padding-block: 14px; font-size: 9px; }
    .interior-nav { height: 68px; gap: 12px; padding-inline: 20px; }
    .interior-brand img { width: 120px; height: 38px; }
    .interior-nav-shop { padding: 8px 10px; gap: 10px; font-size: 10px; min-height: 44px; }
    .interior-nav-shop > span { font-size: 16px; }
    .interior-menu-toggle { width: 44px; flex-shrink: 0; }
    .interior-menu { padding: 24px 24px 30px; max-height: calc(100vh - 68px); max-height: calc(100dvh - 68px); }
    .interior-menu-main > a { font-size: 21px; }
}
@media (max-width: 360px) {
    .interior-nav { gap: 8px; padding-inline: 16px; }
    .interior-brand img { width: 104px; }
    .interior-nav-shop { gap: 6px; padding-inline: 8px; font-size: 9px; }
    .interior-menu { padding-inline: 20px; }
    .interior-menu-main > a { font-size: 19px; }
}
@media (prefers-reduced-motion: reduce) {
    .interior-site { scroll-behavior: auto; }
    .interior-site *, .interior-site *::before, .interior-site *::after { animation-duration: .01ms !important; animation-iteration-count: 1 !important; transition-duration: .01ms !important; scroll-behavior: auto !important; }
}