/* 一般向けLP（2026-10-28 作り直し: インテリア雑誌風。写真が主役・明朝の見出し・カードや丸い札は使わない） */
:root{--paper:#f5f2ec;--paper2:#ebe6dc;--ink:#1f1d1a;--sub:#55504a;--mute:#8b857c;--rule:#d6cfc3;--accent:#9c4a2b}
*{box-sizing:border-box}
html{scroll-behavior:smooth}
body{margin:0;background:var(--paper);color:var(--ink);font-family:-apple-system,BlinkMacSystemFont,'Hiragino Sans','Hiragino Kaku Gothic ProN','Noto Sans JP',sans-serif;font-size:16px;line-height:1.95;letter-spacing:.04em;-webkit-font-smoothing:antialiased}
img{display:block;max-width:100%;height:auto}
a{color:inherit}
h1,h2,h3,.logo,.no,.n,dt,summary,.samples strong{font-family:'Hiragino Mincho ProN','Yu Mincho','YuMincho','Noto Serif JP','Noto Serif CJK JP',serif;font-weight:600}
.wrap{max-width:1160px;margin:0 auto;padding:0 32px}
.wrap.narrow{max-width:860px}

/* ナビ */
.nav{position:sticky;top:0;z-index:20;background:rgba(245,242,236,.94);backdrop-filter:blur(6px);border-bottom:1px solid transparent;transition:border-color .2s}
.nav.scrolled{border-bottom-color:var(--rule)}
.nav .wrap{display:flex;align-items:center;justify-content:space-between;height:60px;max-width:none;padding:0 40px}
.logo{font-size:19px;letter-spacing:.14em;text-decoration:none}
.nav-links{display:flex;gap:28px;font-size:13px;letter-spacing:.1em}
.nav-links a{text-decoration:none;color:var(--sub)}
.nav-links a:hover{color:var(--ink)}
.nav-links .nav-go{color:var(--ink);border-bottom:1px solid var(--ink)}

/* ボタン: 四角・影なし */
.btn{display:inline-block;white-space:nowrap;background:var(--ink);color:var(--paper);text-decoration:none;padding:15px 40px;font-size:15px;letter-spacing:.16em;transition:background .2s}
.btn:hover{background:var(--accent)}
.link{font-size:14px;color:var(--ink);text-decoration:none;border-bottom:1px solid var(--ink);padding-bottom:2px;letter-spacing:.08em}
.link:hover{color:var(--accent);border-color:var(--accent)}
.cta{display:flex;align-items:center;gap:28px;flex-wrap:wrap;margin:30px 0 0}

/* 一番上: 左に縦書きの見出し、右に大きな写真 */
.hero{display:grid;grid-template-columns:minmax(520px,5fr) 7fr;min-height:calc(100vh - 60px);max-height:900px}
.hero-text{display:grid;grid-template-columns:1fr auto;grid-template-rows:auto 1fr;gap:0 56px;padding:56px 64px 56px 40px}
.hero-label{grid-column:1/-1;margin:0 0 28px;font-size:12px;letter-spacing:.24em;color:var(--mute)}
.hero h1{grid-column:2;grid-row:2;writing-mode:vertical-rl;font-size:clamp(34px,3.4vw,50px);line-height:1.7;letter-spacing:.14em;margin:0;align-self:start}
.hero-body{grid-column:1;grid-row:2;align-self:end;font-size:15px;color:var(--sub);max-width:22em}
.hero-body p{margin:0}
.facts{margin-top:22px!important;font-size:12px;color:var(--mute);letter-spacing:.08em}
.hero-photo{margin:0;position:relative;overflow:hidden}
.hero-photo img{width:100%;height:100%;object-fit:cover}
.hero-photo figcaption{position:absolute;left:20px;bottom:16px;font-size:11px;color:#fff;letter-spacing:.06em;text-shadow:0 1px 3px rgba(0,0,0,.5)}

/* 節 */
.sec{padding:120px 0}
.sec.tone{background:var(--paper2)}
.sec-head{display:grid;grid-template-columns:160px 1fr;gap:0 40px;margin:0 0 56px;border-top:1px solid var(--ink);padding-top:22px}
.no{font-size:13px;letter-spacing:.2em;color:var(--sub)}
.sec-head h2{margin:0;font-size:clamp(26px,2.8vw,36px);line-height:1.6;letter-spacing:.1em}
.head-note{grid-column:2;margin:16px 0 0;font-size:14px;color:var(--sub)}

/* はじめの文 */
.intro .wrap{display:grid;grid-template-columns:5fr 7fr;gap:40px}
.intro h2{margin:0;font-size:clamp(28px,3vw,40px);line-height:1.6;letter-spacing:.12em}
.prose{max-width:34em;font-size:16px}
.prose p{margin:0 0 1.4em}
.prose p:last-child{color:var(--ink);margin:0}

/* 使い方: 3つの画像を横に、番号と短い文 */
.steps{list-style:none;margin:0;padding:0;display:grid;grid-template-columns:repeat(3,1fr);gap:40px}
.steps figure{margin:0 0 20px;aspect-ratio:4/3.4;background:#fff;display:flex;align-items:center;justify-content:center;overflow:hidden}
.steps figure img{max-height:100%;width:auto;object-fit:contain}
.steps li:last-child figure img{width:100%;height:100%;object-fit:cover}
.steps .n{font-size:30px;line-height:1;color:var(--accent)}
.steps h3{display:inline;margin:0 0 0 12px;font-size:19px;letter-spacing:.1em}
.steps p{margin:12px 0 0;font-size:14px;color:var(--sub)}

/* 部屋の中: 大小をずらした写真 */
.switch{display:inline-flex;gap:18px;margin-left:18px;vertical-align:baseline}
.switch button{border:0;background:none;padding:0 0 2px;font:inherit;font-size:13px;color:var(--mute);cursor:pointer;border-bottom:1px solid transparent;letter-spacing:.08em}
.switch button.on{color:var(--ink);border-bottom-color:var(--ink)}
.gallery{display:grid;grid-template-columns:7fr 5fr;gap:28px 28px}
.gallery figure{margin:0;position:relative}
.gallery figure img{width:100%;aspect-ratio:16/10;object-fit:cover}
.gallery figure img+img{position:absolute;inset:0;height:calc(100% - 34px);opacity:0;transition:opacity .4s}
.gallery.real figure img+img{opacity:1}
.gallery figcaption{font-size:12px;color:var(--sub);margin-top:10px;letter-spacing:.1em;height:24px}
.gallery .g2{align-self:end;margin-bottom:40px}
.gallery .g3{margin-top:-20px}
.gallery .g4{grid-column:2;grid-row:2;margin-top:60px}
.gallery .g3{grid-column:1;grid-row:2}

/* できること: 罫線の表 */
.spec{margin:0;border-top:1px solid var(--rule);margin-left:200px}
.spec div{display:grid;grid-template-columns:120px 1fr;gap:24px;padding:24px 0;border-bottom:1px solid var(--rule)}
.spec dt{font-size:17px;letter-spacing:.14em}
.spec dd{margin:0;color:var(--sub);font-size:15px}
.spec small{font-size:12px;color:var(--mute)}

/* 見本の部屋 */
.samples{list-style:none;margin:0;padding:0;display:grid;grid-template-columns:repeat(3,1fr);gap:40px}
.samples a{display:block;text-decoration:none}
.samples img{width:100%;aspect-ratio:4/3;object-fit:cover;margin-bottom:18px;transition:opacity .2s}
.samples a:hover img{opacity:.88}
.samples .who{display:block;font-size:12px;color:var(--mute);letter-spacing:.16em}
.samples strong{display:block;font-size:21px;letter-spacing:.1em;margin:4px 0 8px}
.samples .desc{display:block;font-size:14px;color:var(--sub);line-height:1.85}
.samples .go{display:inline-block;margin-top:14px;font-size:13px;border-bottom:1px solid var(--ink);letter-spacing:.1em}
.samples a:hover .go{color:var(--accent);border-color:var(--accent)}

/* 質問 */
.faq{border-top:1px solid var(--rule)}
.faq details{border-bottom:1px solid var(--rule)}
.faq summary{list-style:none;cursor:pointer;padding:22px 40px 22px 0;font-size:17px;letter-spacing:.08em;position:relative}
.faq summary::-webkit-details-marker{display:none}
.faq summary:after{content:"";position:absolute;right:6px;top:50%;width:14px;height:1px;background:var(--ink)}
.faq summary:before{content:"";position:absolute;right:12.5px;top:calc(50% - 6.5px);width:1px;height:14px;background:var(--ink);transition:transform .2s}
.faq details[open] summary:before{transform:scaleY(0)}
.faq details p{margin:0 0 24px;color:var(--sub);font-size:15px;max-width:40em}

/* おわり: 写真の上に紙の箱 */
.closing{position:relative;min-height:620px;display:flex;align-items:center}
.closing>img{position:absolute;inset:0;width:100%;height:100%;object-fit:cover}
.closing-text{position:relative;background:var(--paper);padding:56px 56px 52px;margin-left:8vw;max-width:460px}
.closing h2{margin:0 0 14px;font-size:clamp(26px,2.6vw,34px);line-height:1.65;letter-spacing:.12em}
.closing p{margin:0 0 30px;color:var(--sub);font-size:14px}

footer{padding:40px 0 48px;font-size:11px;color:var(--mute);letter-spacing:.06em}
footer .wrap{display:flex;justify-content:space-between;gap:24px;flex-wrap:wrap;max-width:none;padding:0 40px}

/* タブレット・スマホ */
@media (max-width:1080px){
  .hero{grid-template-columns:minmax(440px,5fr) 6fr}
  .hero-text{padding:48px 40px 48px 32px;gap:0 32px}
}
@media (max-width:900px){
  .nav .wrap{padding:0 20px}
  .nav-links a:not(.nav-go){display:none}
  .hero{grid-template-columns:1fr;min-height:0;max-height:none}
  .hero-photo{order:-1;aspect-ratio:auto}
  .hero-photo img{aspect-ratio:4/3}
  .hero-photo figcaption{position:static;color:var(--mute);text-shadow:none;padding:8px 20px 0;font-size:10px}
  .hero-text{padding:36px 20px 8px;grid-template-columns:1fr auto;gap:0 24px}
  .hero-label{margin-bottom:20px}
  .hero h1{font-size:30px;line-height:1.75}
  .hero-body{font-size:14px}
  .cta{gap:22px;margin-top:24px}
  .wrap{padding:0 20px}
  .sec{padding:80px 0}
  .sec-head{grid-template-columns:1fr;gap:10px;margin-bottom:36px}
  .head-note{grid-column:1}
  .intro .wrap{grid-template-columns:1fr;gap:28px}
  .steps,.samples{grid-template-columns:1fr;gap:48px}
  .gallery{grid-template-columns:1fr;gap:20px}
  .gallery .g2,.gallery .g3,.gallery .g4{grid-column:auto;grid-row:auto;margin:0}
  .spec{margin-left:0}
  .spec div{grid-template-columns:72px 1fr;gap:16px}
  .switch{display:flex;margin:12px 0 0}
  .closing{min-height:0;display:block}
  .closing>img{position:static;aspect-ratio:4/3}
  .closing-text{margin:0;max-width:none;padding:40px 20px 56px}
  footer .wrap{padding:0 20px}
}
@media (max-width:420px){
  .hero-text{grid-template-columns:1fr;}
  .hero h1{grid-column:1;grid-row:auto;writing-mode:horizontal-tb;font-size:28px;margin-bottom:24px}
  .hero-body{grid-row:auto}
}
@media (prefers-reduced-motion:reduce){html{scroll-behavior:auto}*{transition:none!important}}