/* 各部屋 共通スタイル（白・透明感）
   ページごとに :root で --accent / --accent-rgb / --work-delay / --cue-delay を指定する */
*{margin:0;padding:0;box-sizing:border-box}html{scroll-behavior:smooth}
body{background:var(--paper);color:var(--ink);font-family:"Zen Kaku Gothic New",sans-serif;-webkit-font-smoothing:antialiased;text-rendering:optimizeLegibility;overflow-x:hidden}

/* 戻り導線 */
.back{position:fixed;top:0;left:0;right:0;z-index:20;padding:16px clamp(20px,5vw,48px);display:flex;justify-content:space-between;align-items:center;background:linear-gradient(180deg,rgba(250,250,247,.88),rgba(250,250,247,0))}
.back a{font-size:.72rem;letter-spacing:.18em;color:var(--ink-soft);text-decoration:none;transition:color .3s}
.back a:hover{color:var(--ink)}

/* 部屋のとびら：朝靄の地に、作品の気配（静止画）がうっすら透ける */
.door{position:relative;min-height:100svh;display:flex;flex-direction:column;align-items:center;justify-content:center;gap:clamp(26px,5vh,50px);padding:clamp(30px,8vh,90px) 20px;background:var(--field);overflow:hidden;text-align:center}
.door::before{content:"";position:absolute;left:50%;top:44%;width:min(64vw,560px);height:min(64vw,560px);transform:translate(-50%,-50%);background:radial-gradient(circle, rgba(var(--accent-rgb),.16), rgba(var(--accent-rgb),0) 70%);pointer-events:none;z-index:1;animation:pulse 7s ease-in-out infinite}
@keyframes pulse{0%,100%{opacity:.7}50%{opacity:1}}
/* 背景の静止画（将来 <video> に差し替える場合も同じ枠に入れる） */
.doorstill{position:absolute;inset:0;z-index:0;overflow:hidden}
.doorstill img,.doorstill video{position:absolute;inset:0;width:100%;height:100%;object-fit:cover;opacity:.1;filter:grayscale(1) contrast(.8) brightness(1.2);mix-blend-mode:multiply}
.doorstill::after{content:"";position:absolute;inset:0;background:radial-gradient(120% 92% at 50% 44%, rgba(250,250,247,.4) 0%, rgba(250,250,247,.8) 60%, rgba(243,242,238,.96) 100%)}
.door .cat,.door .dtag,.door .moebius,.door .work,.door .status{position:relative;z-index:2}
.door .cat{font-family:"Cormorant Garamond",serif;font-style:italic;font-weight:300;font-size:clamp(.9rem,2vw,1.15rem);letter-spacing:.24em;color:var(--ink-faint);opacity:0;animation:fade 1.6s ease .3s forwards}
.dtag{font-family:"Shippori Mincho",serif;font-weight:500;color:var(--ink);font-size:clamp(1.5rem,min(5.4vw,5vh),2.7rem);letter-spacing:.1em;line-height:1.7}
.dtag .ch,.moebius .ch{opacity:0;animation:charIn .42s cubic-bezier(.2,.7,.2,1) both;text-shadow:0 0 18px rgba(255,255,255,.9)}
.moebius{writing-mode:vertical-rl;font-family:"Shippori Mincho",serif;font-weight:500;color:var(--ink);font-size:clamp(1.15rem,min(4.4vh,5.6vw),2.1rem);line-height:2.9;letter-spacing:.06em}
.moebius .l{display:block}
.moebius .be{color:var(--beni);font-weight:600;font-size:1.5em}
.moebius .setsu{color:var(--ai);font-weight:600;font-size:1.5em}
@keyframes charIn{0%{opacity:0;filter:blur(7px)}100%{opacity:1;filter:blur(0)}}
@keyframes fade{to{opacity:1}}
.door .work{opacity:0;animation:fade 1.5s ease var(--work-delay,2.4s) forwards}
.door .work .t{font-family:"Cormorant Garamond",serif;font-size:clamp(1.3rem,3.2vw,2rem);letter-spacing:.14em;color:var(--ink)}
.door .work .s{margin-top:8px;font-size:.72rem;letter-spacing:.26em;color:var(--ink-soft)}
.door .status{opacity:0;animation:fade 1.5s ease var(--work-delay,2.4s) forwards;font-size:.72rem;letter-spacing:.16em;color:var(--beni);border:1px solid rgba(192,118,137,.45);padding:7px 16px;border-radius:2px;background:rgba(251,250,247,.6)}
.dcue{position:absolute;z-index:2;bottom:26px;left:50%;transform:translateX(-50%);width:1px;height:52px;background:linear-gradient(var(--ink-faint),transparent);opacity:0;animation:fade 1.4s ease var(--cue-delay,2.8s) forwards}

/* 本文 */
section{position:relative}
.wrap{max-width:1000px;margin:0 auto;padding:clamp(66px,12vh,130px) clamp(20px,6vw,54px)}
.eyebrow{font-size:.66rem;letter-spacing:.42em;color:var(--accent);margin-bottom:16px}
h2{font-family:"Shippori Mincho",serif;font-weight:500;font-size:clamp(1.5rem,4vw,2.2rem);letter-spacing:.12em;line-height:1.5;color:var(--ink)}
.lead{margin-top:20px;font-size:clamp(.9rem,1.5vw,1rem);line-height:2.05;color:var(--ink-soft);max-width:38em;letter-spacing:.03em}
.note{margin-top:14px;font-size:.72rem;letter-spacing:.1em;color:var(--ink-faint)}

/* 作品写真：白い壁に掛かった作品 */
.hero-img,.figure,.photos .im,.player,.rec-grid figure,.book .cover{background:#fff;border:1px solid var(--line);box-shadow:var(--hang);overflow:hidden}
.hero-img{margin-top:clamp(30px,5vh,50px);aspect-ratio:16/9}
.hero-img img{width:100%;height:100%;object-fit:cover;display:block}
.figure{margin-top:clamp(28px,5vh,48px)}
.figure .im{aspect-ratio:16/9;overflow:hidden}.figure img{width:100%;height:100%;object-fit:cover;display:block}
.figure figcaption,.photos figcaption{padding:12px 16px;font-size:.72rem;letter-spacing:.06em;color:var(--ink-soft);background:var(--paper2);border-top:1px solid var(--line)}
.photos{margin-top:clamp(28px,5vh,48px);display:grid;grid-template-columns:1fr 1fr;gap:clamp(14px,2vw,22px)}
.photos .im{aspect-ratio:3/4}
.photos img{width:100%;height:100%;object-fit:cover;display:block}
.photos figure.im{display:flex;flex-direction:column;aspect-ratio:auto}
.photos figure.im .ph{aspect-ratio:3/4;overflow:hidden}

.concept{margin-top:clamp(34px,6vh,56px);display:grid;grid-template-columns:1fr 1fr;gap:clamp(18px,3vw,36px)}
.concept.three{grid-template-columns:repeat(3,1fr)}
.concept .c{border:1px solid var(--line);padding:clamp(20px,3vw,30px);background:var(--paper2)}
.concept.three .c{border:0;padding:0;background:none}
.concept .c .n{font-family:"Cormorant Garamond",serif;font-style:italic;color:var(--accent);font-size:1rem;letter-spacing:.1em}
.concept .c h3{font-family:"Shippori Mincho",serif;font-weight:500;font-size:1.05rem;letter-spacing:.06em;margin:8px 0 10px;color:var(--ink)}
.concept .c p{font-size:.83rem;line-height:1.9;color:var(--ink-soft)}

/* 観る動画（YouTube / Vimeo 枠。data-youtube が空なら「準備中」） */
.player{position:relative;margin-top:clamp(30px,5vh,50px);aspect-ratio:16/9}
.player.blank{background:linear-gradient(135deg,var(--paper2) 0%,var(--mist) 100%)}
.player>img{width:100%;height:100%;object-fit:cover;display:block;transition:opacity .5s}
.player .veil{position:absolute;inset:0;pointer-events:none;background:radial-gradient(circle at 50% 50%, rgba(247,246,242,0), rgba(42,37,33,.18));transition:opacity .4s}
.player .play{position:absolute;left:50%;top:50%;transform:translate(-50%,-50%);width:clamp(62px,9vw,88px);height:clamp(62px,9vw,88px);border-radius:50%;display:grid;place-items:center;border:1px solid rgba(var(--accent-rgb),.8);background:rgba(251,250,247,.7);-webkit-backdrop-filter:blur(3px);backdrop-filter:blur(3px);cursor:pointer;transition:transform .4s,background .4s,border-color .4s}
.player .play svg{width:34%;height:34%;margin-left:8%;fill:var(--accent);transition:fill .4s}
.player:not(.pending) .play:hover{transform:translate(-50%,-50%) scale(1.08);background:var(--accent);border-color:var(--accent)}
.player:not(.pending) .play:hover svg{fill:#fff}
.player.pending .play{cursor:default;border-color:var(--line)}
.player.pending .play svg{fill:var(--ink-faint)}
.player .badge{position:absolute;bottom:14px;right:16px;font-size:.68rem;letter-spacing:.14em;color:var(--ink-soft);background:rgba(251,250,247,.86);padding:6px 13px;border-radius:2px}
.player iframe{position:absolute;inset:0;width:100%;height:100%;border:0}
.player.playing>img,.player.playing .veil,.player.playing .play,.player.playing .badge{opacity:0;pointer-events:none}

.tech{margin-top:clamp(30px,5vh,48px);display:flex;flex-wrap:wrap;gap:10px}
.tech span{font-size:.72rem;letter-spacing:.08em;color:var(--ink-soft);border:1px solid var(--line);padding:7px 14px;border-radius:2px;background:rgba(251,250,247,.6)}
.badges{margin-top:22px;display:flex;flex-wrap:wrap;gap:10px}
.badges span{font-size:.72rem;letter-spacing:.08em;color:var(--accent);border:1px solid rgba(var(--accent-rgb),.5);padding:7px 14px;border-radius:2px}
.badges .status{color:var(--beni);border-color:rgba(192,118,137,.45)}
.alt{background:var(--mist)}.alt2{background:var(--paper2)}

/* Romancing Train：これまでのバージョン */
.versions .ver-grid{margin-top:clamp(36px,6vh,56px);display:grid;grid-template-columns:1fr 1fr;gap:clamp(20px,3vw,36px)}
.versions .ver-cap{margin-top:14px;font-family:"Shippori Mincho",serif;font-weight:500;font-size:1rem;letter-spacing:.08em;color:var(--ink)}
.versions .ver-cap .en{display:block;margin-top:4px;font-family:"Cormorant Garamond",serif;font-style:italic;font-weight:300;font-size:.82rem;letter-spacing:.12em;color:var(--ink-faint)}

/* Romancing Train：絵本を読む（一要素として後景に） */
.book{background:var(--paper2)}
.book .wrap{display:grid;grid-template-columns:minmax(0,300px) 1fr;gap:clamp(30px,5vw,64px);align-items:center}
.book .cover{aspect-ratio:3/4}
.book .cover img{width:100%;height:100%;object-fit:cover;display:block}
.book .btn{margin-top:26px;display:inline-flex;align-items:center;gap:12px;padding:15px 30px;border:1px solid var(--tomoshibi);color:var(--tomoshibi);text-decoration:none;font-size:.82rem;letter-spacing:.2em;border-radius:2px;transition:background .4s,color .4s}
.book .btn:hover{background:var(--tomoshibi);color:#fff}
.book .btn .dot{width:7px;height:7px;border-radius:50%;background:currentColor;box-shadow:0 0 10px 1px rgba(201,121,46,.5)}
.book .soon{margin-top:14px;font-size:.7rem;letter-spacing:.16em;color:var(--ink-faint)}

/* 光と影の系譜 */
.lineage .line{margin-top:clamp(40px,6vh,64px);position:relative;padding-left:22px}
.lineage .line::before{content:"";position:absolute;left:3px;top:6px;bottom:6px;width:1px;background:linear-gradient(var(--line),var(--tomoshibi))}
.node{position:relative;padding:0 0 clamp(30px,5vh,48px) 10px}
.node::before{content:"";position:absolute;left:-23px;top:5px;width:9px;height:9px;border-radius:50%;background:var(--paper);border:1px solid var(--ink-faint)}
.node.now::before{background:var(--tomoshibi);border-color:var(--tomoshibi);box-shadow:0 0 12px 2px rgba(201,121,46,.45)}
.node .era{font-family:"Cormorant Garamond",serif;font-style:italic;font-size:.82rem;letter-spacing:.14em;color:var(--ink-faint)}
.node h3{font-family:"Shippori Mincho",serif;font-weight:500;font-size:1.15rem;letter-spacing:.08em;margin:5px 0 8px;color:var(--ink)}
.node.now h3{color:var(--tomoshibi)}
.node p{font-size:.85rem;line-height:1.9;color:var(--ink-soft);max-width:34em}

/* 記録 */
.rec{background:var(--mist)}
.rec-grid{margin-top:clamp(36px,6vh,56px);display:grid;grid-template-columns:repeat(3,1fr);gap:clamp(14px,2vw,22px)}
.rec-grid .im{aspect-ratio:16/9;overflow:hidden}
.rec-grid img{width:100%;height:100%;object-fit:cover;display:block}
.rec-grid figcaption{padding:12px 14px;font-size:.72rem;letter-spacing:.06em;color:var(--ink-soft);line-height:1.6;background:var(--paper2);border-top:1px solid var(--line)}

/* 三部作の行き来 */
.trilogy{background:var(--paper2)}
.trilogy .tl{margin-top:clamp(26px,4vh,40px);display:grid;grid-template-columns:repeat(3,1fr);gap:clamp(12px,2vw,20px)}
.trilogy a{display:block;padding:18px 20px;border:1px solid var(--line);background:#fff;text-decoration:none;color:var(--ink);transition:border-color .4s,box-shadow .4s}
.trilogy a:hover{border-color:rgba(201,121,46,.6);box-shadow:var(--hang)}
.trilogy a[aria-current="page"]{pointer-events:none;background:var(--mist);color:var(--ink-faint)}
.trilogy .t{display:block;font-family:"Shippori Mincho",serif;font-weight:500;font-size:1rem;letter-spacing:.08em}
.trilogy .s{display:block;margin-top:4px;font-size:.7rem;letter-spacing:.08em;color:var(--ink-faint)}

.foot{padding:clamp(60px,10vh,100px) 20px;text-align:center;background:var(--mist)}
.foot a{color:var(--ink-soft);text-decoration:none;font-size:.8rem;letter-spacing:.2em;border-bottom:1px solid var(--line);padding-bottom:5px;transition:color .3s,border-color .3s}
.foot a:hover{color:var(--accent);border-color:var(--accent)}

.reveal{opacity:0;transform:translateY(26px);transition:opacity 1.1s ease,transform 1.1s cubic-bezier(.2,.7,.2,1)}
.reveal.in{opacity:1;transform:none}
a:focus-visible,button:focus-visible{outline:1px solid var(--tomoshibi);outline-offset:6px}

@media (max-width:760px){
  .concept,.concept.three,.photos{grid-template-columns:1fr;gap:24px}
  .versions .ver-grid{grid-template-columns:1fr;gap:30px}
  .book .wrap{grid-template-columns:1fr;gap:30px}
  .book .cover{max-width:260px}
  .rec-grid,.trilogy .tl{grid-template-columns:1fr}
}
@media (prefers-reduced-motion:reduce){
  .door::before{animation:none}
  .dtag .ch,.moebius .ch,.door .cat,.door .work,.door .status,.dcue{opacity:1;animation:none}
  .reveal{opacity:1;transform:none;transition:none}
}