/* LUXTH 下層ページ（参考 sogokagu の下層の型：大見出し＋パンくず／タイル 3 列の一覧／左に写真・右に情報の商品詳細／線で区切った表）
   色・文字・余白は tokens.css と style.css の決まりのまま。切り替えの幅は docs/RESPONSIVE_RULES.md と同じ */

/* ---------- ページの頭（参考：左上の大見出し 48px＋線） ---------- */
.sub main { padding-top: 84px; }
.phead { padding: 64px var(--gutter) 48px; border-bottom: 1px solid var(--c-line); }
.crumbs { display: flex; flex-wrap: wrap; gap: 8px; font-size: 14px; color: var(--c-ink-sub); }
.crumbs a { transition: opacity var(--dur-hover) ease; }
.crumbs a:hover { opacity: 0.6; }
.phead__en { margin-top: 40px; font-family: var(--ff-en); font-size: 16px; letter-spacing: 0.2em; color: var(--c-ink-sub); }
.phead__ttl { margin-top: 12px; font-family: var(--ff-mincho); font-size: clamp(34px, 3.4vw, 48px); font-weight: 500; letter-spacing: 0.06em; line-height: 1.35; font-feature-settings: "palt"; }
.phead__lead { max-width: 40em; margin-top: 24px; color: var(--c-ink-sub); text-wrap: pretty; }

/* セクションの共通 */
.psec { padding: 96px var(--gutter) 0; }
.psec--first { padding-top: 56px; }
.psec > .h-ja-l { margin-bottom: 8px; }
.split { display: grid; grid-template-columns: 360px 1fr; gap: 40px; align-items: start; }
.split > div:first-child { display: flex; flex-direction: column; align-items: flex-start; gap: 20px; }
.split__lead { color: var(--c-ink-sub); text-wrap: pretty; }
.prose { display: flex; flex-direction: column; gap: 20px; max-width: 44em; }
.prose p { color: var(--c-ink-sub); text-wrap: pretty; }
.prose__h { margin-top: 12px; font-family: var(--ff-mincho); font-size: 20px; font-weight: 500; letter-spacing: 0.06em; }
.wide { aspect-ratio: 21 / 9; }

/* 仕様・会社概要などの表（参考：線で挟んだ定義リスト） */
.spec--lg { border-top: 1px solid var(--c-ink); }
.spec--lg > div { display: grid; grid-template-columns: 200px 1fr; gap: 0 var(--sp-p); padding: 22px 4px; border-bottom: 1px solid var(--c-line); }
.spec--lg dt { font-family: var(--ff-mincho); font-size: 17px; font-weight: 500; letter-spacing: 0.06em; }
.spec--lg dd { color: var(--c-ink-sub); text-wrap: pretty; }
.spec--lg a { color: var(--c-ink); border-bottom: 1px solid currentColor; }
.spec--legal { max-width: 960px; }

/* ---------- 商品一覧（参考：灰の地のタイル 3 列＋名前とカナ） ---------- */
.plist__bar { display: flex; flex-wrap: wrap; align-items: center; justify-content: space-between; gap: 20px; padding-bottom: 20px; border-bottom: 1px solid var(--c-line); }
.plist__common { color: var(--c-ink-sub); }
.tabs { display: flex; flex-wrap: wrap; gap: 8px; }
.tabs__btn { display: inline-flex; align-items: center; gap: 10px; min-height: 48px; padding: 0 20px; border: 1px solid var(--c-line); font-family: var(--ff-en); font-size: 16px; letter-spacing: 0.08em; transition: background-color var(--dur-hover) ease, color var(--dur-hover) ease, border-color var(--dur-hover) ease; }
.tabs__btn span { font-size: 14px; color: var(--c-ink-sub); }
.tabs__btn.is-on { background: var(--c-ink); color: var(--c-paper-ink); border-color: var(--c-ink); }
.tabs__btn.is-on span { color: var(--c-paper-sub); }
.plist { display: grid; grid-template-columns: repeat(3, 1fr); gap: 56px 20px; margin-top: 40px; }
.plist--4 { grid-template-columns: repeat(4, 1fr); }
.pcard[hidden] { display: none; }
.pcard a { display: flex; flex-direction: column; gap: 10px; }
.pcard__img { position: relative; display: grid; place-items: center; aspect-ratio: 4 / 5; background: var(--c-tile); overflow: hidden; }
.pcard__img::after { content: ""; position: absolute; inset: 0; pointer-events: none; background: radial-gradient(ellipse 36% 5% at 50% 80%, var(--c-floor), transparent 70%); }
.pcard__img img { position: relative; z-index: 1; width: 74%; transition: transform 0.6s ease; }
.pcard a:hover .pcard__img img { transform: scale(1.04); }
.pcard__line { margin-top: 8px; font-family: var(--ff-en); font-size: 16px; letter-spacing: 0.16em; color: var(--c-ink-sub); }
.pcard__name { font-family: var(--ff-mincho); font-size: 22px; font-weight: 500; letter-spacing: 0.08em; line-height: 1.4; }
.pcard__name small { display: block; margin-top: 4px; font-family: var(--ff-en); font-size: 14px; font-weight: 400; letter-spacing: 0.18em; color: var(--c-ink-sub); }
.pcard__color { color: var(--c-ink-sub); }
.pcard__price { font-family: var(--ff-mincho); font-size: 20px; }
.pcard__price small { font-family: var(--ff-ja); font-size: 16px; color: var(--c-ink-sub); }
.lines { display: grid; grid-template-columns: 1fr 1fr; border-top: 1px solid var(--c-line); border-bottom: 1px solid var(--c-line); }
.lines__item { display: flex; flex-direction: column; gap: 14px; padding: 40px 40px 40px 0; }
.lines__item + .lines__item { padding-left: 40px; border-left: 1px solid var(--c-line); }
.lines__item p { color: var(--c-ink-sub); text-wrap: pretty; }

/* ---------- 商品ページ（参考：左に大きな写真と小さな写真の列・右に名前・価格・説明・SPEC） ---------- */
.pd { display: grid; grid-template-columns: minmax(0, 1fr) 440px; gap: 32px 64px; padding: 32px var(--gutter) 0; }
.pd__crumbs { grid-column: 1 / -1; }
.pd__gallery { display: flex; flex-direction: column; gap: 12px; }
.pd__main { position: relative; display: grid; place-items: center; aspect-ratio: 1 / 1; background: var(--c-tile); }
.pd__main::after { content: ""; position: absolute; inset: 0; pointer-events: none; background: radial-gradient(ellipse 34% 5% at 50% 82%, var(--c-floor), transparent 70%); }
.pd__main img { position: relative; z-index: 1; width: 64%; }
.pd__sub { display: grid; grid-template-columns: repeat(4, 1fr); gap: 12px; }
.pd__sub li { aspect-ratio: 1 / 1; }
.pd__info { position: sticky; top: 104px; align-self: start; display: flex; flex-direction: column; gap: 18px; }
.pd__line { font-family: var(--ff-en); font-size: 16px; letter-spacing: 0.18em; color: var(--c-ink-sub); }
.pd__name { font-family: var(--ff-mincho); font-size: clamp(30px, 2.8vw, 40px); font-weight: 500; letter-spacing: 0.08em; line-height: 1.35; }
.pd__name small { display: block; margin-top: 6px; font-family: var(--ff-en); font-size: 15px; font-weight: 400; letter-spacing: 0.2em; color: var(--c-ink-sub); }
.pd__price { font-family: var(--ff-mincho); font-size: 30px; line-height: 1.2; }
.pd__price small { font-family: var(--ff-ja); font-size: 16px; color: var(--c-ink-sub); }
.pd__lead { color: var(--c-ink-sub); text-wrap: pretty; }
.pd__form { display: flex; flex-direction: column; gap: 24px; padding-top: 24px; border-top: 1px solid var(--c-line); }
.pd__field { margin: 0; padding: 0; border: 0; min-width: 0; }
.pd__field legend { display: flex; justify-content: space-between; width: 100%; margin-bottom: 12px; padding: 0; font-family: var(--ff-mincho); font-size: 17px; font-weight: 500; letter-spacing: 0.06em; }
.pd__guide { font-family: var(--ff-ja); font-size: 15px; color: var(--c-ink-sub); border-bottom: 1px solid currentColor; }
.pd__models { display: grid; grid-template-columns: repeat(5, 1fr); gap: 8px; }
.pd__models a { display: flex; flex-direction: column; gap: 6px; padding: 6px; border: 1px solid transparent; font-size: 12px; line-height: 1.4; color: var(--c-ink-sub); text-align: center; transition: border-color var(--dur-hover) ease; }
.pd__models a:hover { border-color: var(--c-line); }
.pd__models a[aria-current="page"] { border-color: var(--c-ink); color: var(--c-ink); }
.pd__models img { aspect-ratio: 1 / 1; object-fit: contain; background: var(--c-tile); }
/* 名前は小さな写真の枠では語の途中で折れるので、画面には出さず読み上げにだけ渡す（写真の alt と選択中の枠で分かる） */
.pd__models span { position: absolute; width: 1px; height: 1px; overflow: hidden; clip: rect(0 0 0 0); clip-path: inset(50%); white-space: nowrap; }
.pd__models a { position: relative; }
.seg { display: grid; grid-template-columns: 1fr 1fr; }
.seg label, .sizebtn { position: relative; display: block; cursor: pointer; }
.seg input, .sizebtn input { position: absolute; opacity: 0; pointer-events: none; }
.seg span { display: grid; place-items: center; min-height: 52px; border: 1px solid var(--c-line); font-size: 16px; letter-spacing: 0.08em; transition: background-color var(--dur-hover) ease, color var(--dur-hover) ease; }
.seg label + label span { border-left: 0; }
.seg input:checked + span, .sizebtn input:checked + span { background: var(--c-ink); color: var(--c-paper-ink); border-color: var(--c-ink); }
.seg input:focus-visible + span, .sizebtn input:focus-visible + span { outline: 2px solid var(--c-ink); outline-offset: 2px; }
.pd__note { margin-top: 10px; font-size: 16px; color: var(--c-ink-sub); }
.sizes-pick { display: grid; grid-template-columns: repeat(5, 1fr); gap: 8px; }
.sizebtn span { display: flex; flex-direction: column; align-items: center; justify-content: center; gap: 2px; min-height: 64px; border: 1px solid var(--c-line); font-family: var(--ff-en); font-size: 16px; letter-spacing: 0.04em; line-height: 1.2; transition: background-color var(--dur-hover) ease, color var(--dur-hover) ease; }
.sizebtn small { font-family: var(--ff-ja); font-size: 12px; letter-spacing: 0; color: var(--c-ink-sub); }
.sizebtn input:checked + span small { color: var(--c-paper-sub); }
.pd__buy { width: 100%; min-height: 60px; font-size: 18px; }
.pd__assure { display: flex; flex-direction: column; border-top: 1px solid var(--c-line); }
.pd__assure li { display: flex; flex-direction: column; gap: 2px; padding: 14px 0; border-bottom: 1px solid var(--c-line); color: var(--c-ink-sub); }
.pd__assure strong { font-family: var(--ff-mincho); font-size: 17px; font-weight: 500; color: var(--c-ink); letter-spacing: 0.06em; }
.pd__tel { color: var(--c-ink-sub); }
.pd__tel a { font-family: var(--ff-mincho); font-size: 22px; color: var(--c-ink); }
.pd__story { display: grid; grid-template-columns: 1fr 1fr; gap: 64px; }
.pd__storytxt { display: flex; flex-direction: column; gap: 20px; }
.pd__storytxt p { color: var(--c-ink-sub); text-wrap: pretty; }
.sizes { width: 100%; border-collapse: collapse; border-top: 1px solid var(--c-ink); }
.sizes th, .sizes td { padding: 16px 4px; border-bottom: 1px solid var(--c-line); text-align: left; font-weight: 400; }
.sizes thead th { font-family: var(--ff-mincho); font-size: 16px; color: var(--c-ink-sub); }
.sizes tbody th { font-family: var(--ff-en); font-size: 18px; letter-spacing: 0.04em; }
.sizes td { color: var(--c-ink-sub); }

/* よくある質問（開いて読む） */
.faq { border-top: 1px solid var(--c-ink); }
.faq__item { border-bottom: 1px solid var(--c-line); }
.faq__item summary { position: relative; display: block; padding: 24px 48px 24px 4px; font-family: var(--ff-mincho); font-size: 18px; font-weight: 500; letter-spacing: 0.04em; line-height: 1.6; cursor: pointer; list-style: none; }
.faq__item summary::-webkit-details-marker { display: none; }
.faq__item summary::after { content: ""; position: absolute; right: 12px; top: 50%; width: 12px; height: 12px; margin-top: -9px; border-right: 1.5px solid currentColor; border-bottom: 1.5px solid currentColor; transform: rotate(45deg); transition: transform var(--dur-hover) ease; }
.faq__item[open] summary::after { transform: rotate(-135deg); margin-top: -3px; }
.faq__item p { padding: 0 48px 28px 4px; color: var(--c-ink-sub); text-wrap: pretty; }

/* ---------- ブランドについて（参考 フィロソフィー：大きな写真＋見出し＋本文・大きな数字） ---------- */
.feature { display: grid; grid-template-columns: 7fr 5fr; gap: clamp(32px, 4.4vw, 64px); align-items: center; }
.feature--rev { grid-template-columns: 5fr 7fr; }
.feature--rev .feature__img { order: 2; }
.feature__img { aspect-ratio: 4 / 3; overflow: hidden; }
.feature__img--photo img { width: 100%; height: 100%; object-fit: cover; object-position: 0% 50%; }  /* 二人とも入るよう左寄せで切り抜く */
.feature__txt { display: flex; flex-direction: column; align-items: flex-start; gap: 20px; }
.feature__txt p { color: var(--c-ink-sub); text-wrap: pretty; }
.feature__num { font-family: var(--ff-mincho); font-size: clamp(56px, 6vw, 88px); line-height: 1; letter-spacing: 0.02em; }
.feature__num small { margin-left: 8px; font-size: 22px; color: var(--c-ink-sub); }
.timeline { margin-top: 40px; border-top: 1px solid var(--c-ink); }
.timeline li { display: grid; grid-template-columns: 120px 360px 1fr; gap: 0 40px; padding: 28px 4px; border-bottom: 1px solid var(--c-line); }
.timeline__no { font-family: var(--ff-mincho); font-size: 26px; color: var(--c-ink-sub); line-height: 1.2; }
.timeline h3 { font-family: var(--ff-mincho); font-size: 20px; font-weight: 500; letter-spacing: 0.06em; line-height: 1.5; }
.timeline p { color: var(--c-ink-sub); text-wrap: pretty; }

/* ---------- ご購入ガイド ---------- */
.toc { display: flex; flex-wrap: wrap; gap: 12px; }
.toc a { display: inline-flex; align-items: center; min-height: 48px; padding: 0 20px; border: 1px solid var(--c-line); font-size: 16px; transition: border-color var(--dur-hover) ease; }
.toc a:hover { border-color: var(--c-ink); }
.steps { display: flex; flex-direction: column; gap: 10px; counter-reset: step; }
.steps li { position: relative; padding-left: 2.2em; color: var(--c-ink-sub); counter-increment: step; text-wrap: pretty; }
.steps li::before { content: counter(step); position: absolute; left: 0; top: 0; font-family: var(--ff-mincho); color: var(--c-ink); }

/* ---------- フルオーダー・お問い合わせ ---------- */
.reserve { display: flex; flex-direction: column; align-items: flex-start; gap: 20px; padding: 56px; border: 1px solid var(--c-line); }
.reserve p { color: var(--c-ink-sub); }
.reserve__tel a { font-family: var(--ff-mincho); font-size: 32px; color: var(--c-ink); letter-spacing: 0.06em; }
.contact-side { position: sticky; top: 104px; }
.cform { display: flex; flex-direction: column; gap: 24px; max-width: 720px; }
.cform__row { display: flex; flex-direction: column; gap: 10px; }
.cform label { font-family: var(--ff-mincho); font-size: 17px; font-weight: 500; letter-spacing: 0.06em; }
.req { margin-left: 12px; font-family: var(--ff-ja); font-size: 13px; color: var(--c-ink-sub); letter-spacing: 0.04em; }
.cform input, .cform select, .cform textarea { width: 100%; min-height: 56px; padding: 14px 16px; border: 1px solid var(--c-line); border-radius: 0; background: var(--c-tile); color: var(--c-ink); font: inherit; font-size: 17px; }
.cform textarea { min-height: 180px; resize: vertical; }
.cform select { appearance: none; background-image: linear-gradient(45deg, transparent 50%, var(--c-ink) 50%), linear-gradient(135deg, var(--c-ink) 50%, transparent 50%); background-position: calc(100% - 26px) 50%, calc(100% - 20px) 50%; background-size: 6px 6px; background-repeat: no-repeat; }
.cform input:focus, .cform select:focus, .cform textarea:focus { outline: 2px solid var(--c-ink); outline-offset: 0; }
.cform__send { align-self: flex-start; min-width: 240px; }
.cart-empty { display: flex; flex-direction: column; align-items: flex-start; gap: 24px; padding: 56px 0; border-top: 1px solid var(--c-ink); border-bottom: 1px solid var(--c-line); }
.cart-empty p { font-family: var(--ff-mincho); font-size: 22px; }
.menu__tel { display: flex; flex-direction: column; gap: 4px; margin-bottom: 20px; color: var(--c-ink-sub); }
.menu__tel a { font-family: var(--ff-mincho); font-size: 24px; color: var(--c-ink); }

/* ---------- 1120px 以下（docs/RESPONSIVE_RULES.md） ---------- */
@media (max-width: 1120px) {
  .pd { grid-template-columns: minmax(0, 1fr) 380px; gap: 32px 40px; }
  .plist--4 { grid-template-columns: repeat(2, 1fr); }
  .timeline li { grid-template-columns: 80px 1fr; }
  .timeline li p { grid-column: 2; margin-top: 8px; }
  .split { grid-template-columns: 280px 1fr; }
}

/* ---------- スマホ・タブレットの縦向き ---------- */
@media (max-width: 780px), (max-width: 1100px) and (orientation: portrait) {
  .sub main { padding-top: 64px; }
  .phead { padding: 32px var(--gutter) 36px; }
  .phead__en { margin-top: 28px; }
  .psec { padding-top: 72px; }
  .psec--first { padding-top: 40px; }
  .split { grid-template-columns: 1fr; gap: 28px; }
  .contact-side { position: static; }
  .plist { grid-template-columns: 1fr 1fr; gap: 40px 12px; }
  .pcard__name { font-size: 19px; }
  .lines { grid-template-columns: 1fr; }
  .lines__item { padding: 32px 0; }
  .lines__item + .lines__item { padding-left: 0; border-left: 0; border-top: 1px solid var(--c-line); }
  .pd { grid-template-columns: 1fr; gap: 24px; padding-top: 20px; }
  .pd__info { position: static; }
  .pd__sub { grid-template-columns: repeat(4, 1fr); gap: 8px; }
  .pd__story { grid-template-columns: 1fr; gap: 40px; }
  .spec--lg > div { grid-template-columns: 1fr; gap: 6px; padding: 18px 0; }
  .feature, .feature--rev { grid-template-columns: 1fr; gap: 28px; }
  .feature--rev .feature__img { order: 0; }
  .timeline li { grid-template-columns: 56px 1fr; padding: 24px 0; }
  .timeline li p { grid-column: 1 / -1; }
  .wide { aspect-ratio: 4 / 3; }
  .reserve { padding: 32px 24px; }
  .cform__send { align-self: stretch; }
  .faq__item summary { padding-right: 40px; font-size: 17px; }
  .faq__item p { padding-right: 0; }
}
@media (max-width: 480px) {
  .sizes-pick { grid-template-columns: repeat(3, 1fr); }
  .pd__models { grid-template-columns: repeat(5, 1fr); gap: 4px; }
  .plist { grid-template-columns: 1fr 1fr; }
}