:root{--blk:#000;--wht:#fff;--g9:#0a0a0a;--g8:#161616;--g6:#3a3a3a;--g4:#8a8a8a;
--mono:'JetBrains Mono',monospace;--sans:'Inter','Noto Sans JP',sans-serif;
--ease:cubic-bezier(.16,1,.3,1);--sx:0px;--sy:0px;--beat:0}
*{margin:0;padding:0;box-sizing:border-box}
html{scroll-behavior:smooth}
body{background:var(--blk);color:var(--wht);font-family:var(--sans);overflow-x:hidden;-webkit-font-smoothing:antialiased}
::selection{background:var(--wht);color:var(--blk)}
@media (hover:hover){*{cursor:none}}
.shk{transform:translate(var(--sx),var(--sy))}
#gl{position:fixed;inset:0;z-index:0;pointer-events:none}
main{position:relative;z-index:2;transform:translate(var(--sx),var(--sy))}
.grain{position:fixed;inset:-100px;z-index:40;pointer-events:none;opacity:.09;background-image:url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' width='300' height='300'%3E%3Cfilter id='n'%3E%3CfeTurbulence type='fractalNoise' baseFrequency='0.9' numOctaves='2'/%3E%3C/filter%3E%3Crect width='300' height='300' filter='url(%23n)'/%3E%3C/svg%3E");animation:grain .5s steps(2) infinite}
@keyframes grain{0%{transform:translate(0,0)}25%{transform:translate(-30px,40px)}50%{transform:translate(40px,-20px)}75%{transform:translate(-20px,-40px)}100%{transform:translate(30px,20px)}}
.scanlines{position:fixed;inset:0;z-index:41;pointer-events:none;opacity:.1;background:repeating-linear-gradient(to bottom,rgba(255,255,255,.05) 0 1px,transparent 1px 3px)}
.vignette{position:fixed;inset:0;z-index:42;pointer-events:none;background:radial-gradient(ellipse at center,transparent 55%,rgba(0,0,0,.65) 100%)}
#flash{position:fixed;inset:0;z-index:43;pointer-events:none;background:var(--wht);opacity:calc(var(--beat)*.06)}
#prog{position:fixed;top:0;left:0;height:2px;background:var(--wht);z-index:70;width:0;box-shadow:0 0 12px rgba(255,255,255,.8)}
.corner{position:fixed;width:26px;height:26px;z-index:50;pointer-events:none;border:1px solid rgba(255,255,255,.6)}
.c-tl{top:18px;left:18px;border-right:0;border-bottom:0}.c-tr{top:18px;right:18px;border-left:0;border-bottom:0}
.c-bl{bottom:18px;left:18px;border-right:0;border-top:0}.c-br{bottom:18px;right:18px;border-left:0;border-top:0}
.side-label{position:fixed;top:50%;z-index:50;transform:translateY(-50%);writing-mode:vertical-rl;font-family:var(--mono);font-size:.625rem;letter-spacing:.35em;opacity:.45;pointer-events:none}
.sl-l{left:22px}.sl-r{right:22px}
.hud{position:fixed;bottom:22px;z-index:50;font-family:var(--mono);font-size:.6875rem;letter-spacing:.12em;display:flex;gap:1.2rem;align-items:center}
.hud-l{left:56px}.hud-r{right:56px}
.hud button{background:none;border:1px solid rgba(255,255,255,.4);color:var(--wht);font-family:var(--mono);font-size:.6875rem;letter-spacing:.15em;padding:.5rem 1rem;transition:.3s}
.hud button:hover,.hud button[aria-pressed="true"]{background:var(--wht);color:var(--blk)}
#cur{position:fixed;left:-4px;top:-4px;width:8px;height:8px;background:var(--wht);border-radius:50%;z-index:99;pointer-events:none;mix-blend-mode:difference}
#curR{position:fixed;left:-17px;top:-17px;width:34px;height:34px;border:1px solid rgba(255,255,255,.55);border-radius:50%;z-index:98;pointer-events:none;transition:width .3s,height .3s,left .3s,top .3s}
#curR.big{width:56px;height:56px;left:-28px;top:-28px;border-color:var(--wht)}
@media (hover:none){#cur,#curR{display:none}}
#pre{position:fixed;inset:0;background:var(--blk);z-index:100;display:flex;align-items:center;justify-content:center;transition:transform .9s var(--ease)}
#pre.done{transform:translateY(-100%)}
.pre-inner{text-align:center}
#prePct{font-family:var(--mono);font-size:clamp(3rem,10vw,7rem);font-weight:600;display:block}
.pre-logo{font-family:var(--mono);font-size:.75rem;letter-spacing:.5em;opacity:.6}
header{position:fixed;top:0;left:0;right:0;z-index:60;display:flex;justify-content:space-between;align-items:center;padding:1.6rem 4rem;background:linear-gradient(180deg,rgba(0,0,0,.85),transparent)}
.nav-logo{font-weight:900;letter-spacing:.2em;color:var(--wht);text-decoration:none;font-size:1rem}
.nav-links{display:flex;list-style:none}
.nav-links a{color:var(--wht);text-decoration:none;font-size:.8125rem;font-weight:700;letter-spacing:.18em;padding:0 1.4rem;position:relative;transition:.3s}
.nav-links li:not(:first-child) a::before{content:"/";position:absolute;left:-4px;opacity:.4;font-weight:400}
.nav-links a:hover,.nav-links a[aria-current="page"]{text-shadow:0 0 14px rgba(255,255,255,.95)}
.nav-coord{font-family:var(--mono);font-size:.625rem;letter-spacing:.15em;opacity:.5}
/* hero(index) */
.hero{min-height:100vh;display:flex;align-items:center;justify-content:center;position:relative;z-index:1}
.hero-core{text-align:center;position:relative;z-index:2}
h1{display:flex;align-items:center;justify-content:center;gap:.015em;font-size:clamp(2.6rem,9vw,7rem);font-weight:900;letter-spacing:.06em;transform:scale(calc(1 + var(--beat)*.045));text-shadow:0 0 calc(30px + var(--beat)*40px) rgba(255,255,255,.6)}
.ch{display:inline-block;opacity:0;will-change:transform,filter;transform:translateY(-.7em) scale(2.6) rotate(6deg);filter:blur(16px);transition:transform .5s var(--ease),opacity .25s linear,filter .45s linear}
.ch.on{opacity:1;transform:none;filter:blur(0)}
.locked .ch{animation:chFloat 3.2s ease-in-out infinite;animation-delay:calc(var(--i)*-.41s)}
@keyframes chFloat{0%,100%{transform:translateY(0)}50%{transform:translateY(-.055em)}}
.locked .ch.gl{animation:chGlitch .25s steps(2) 1}
@keyframes chGlitch{0%{transform:translate(-4px,3px) skewX(-12deg)}50%{transform:translate(4px,-3px) skewX(8deg)}100%{transform:none}}
.dash{padding:0 .04em}
.dash svg{display:block;width:.85em;height:.34em;overflow:visible;transform-origin:center;animation:dashPulse 1.2s ease-in-out infinite}
@keyframes dashPulse{0%,100%{transform:scaleY(.55)}50%{transform:scaleY(1.5)}}
.hero-sub{font-family:var(--mono);font-size:.75rem;letter-spacing:.4em;margin-top:1.6rem;opacity:0;transform:translateY(14px);transition:opacity .9s var(--ease) .15s,transform .9s var(--ease) .15s}
.hero-sub.show{opacity:.75;transform:none}
.panel{position:absolute;z-index:1;font-family:var(--mono);font-size:.6875rem;line-height:1.7;color:rgba(255,255,255,.75);background:rgba(8,8,8,.72);border:1px solid rgba(255,255,255,.18);padding:1rem 1.2rem;backdrop-filter:blur(6px);animation:float 7s ease-in-out infinite}
.p1{top:20%;left:12%;transform:rotate(-2deg)}.p2{top:24%;right:10%;animation-delay:-2s;transform:rotate(1.5deg)}
.p3{bottom:22%;left:14%;animation-delay:-4s;transform:rotate(1deg)}.p4{bottom:18%;right:12%;animation-delay:-6s;transform:rotate(-1.5deg)}
@keyframes float{0%,100%{translate:0 0}50%{translate:0 -12px}}
.scroll-hint{position:absolute;bottom:6rem;left:50%;width:1px;height:56px;background:rgba(255,255,255,.2);overflow:hidden}
.scroll-hint::after{content:"";position:absolute;left:0;top:-40%;width:1px;height:40%;background:var(--wht);animation:drop 1.6s var(--ease) infinite}
@keyframes drop{to{top:110%}}
.marquee{border-block:1px solid rgba(255,255,255,.15);overflow:hidden;position:relative;z-index:2;background:rgba(0,0,0,.6)}
.marquee-track{display:inline-flex;white-space:nowrap;animation:mq 26s linear infinite;font-weight:900;letter-spacing:.25em;font-size:1rem}
.marquee-track span{padding:1.1rem 0}
@keyframes mq{to{transform:translateX(-50%)}}
/* sections */
section{position:relative;z-index:2;padding:10rem 4rem;background:rgba(0,0,0,.82)}
.wrap{max-width:1200px;margin:0 auto}
.sec-head{display:flex;justify-content:space-between;align-items:baseline;margin-bottom:4rem;border-bottom:1px solid rgba(255,255,255,.15);padding-bottom:1.5rem}
.sec-label{font-family:var(--mono);font-size:.75rem;letter-spacing:.4em;opacity:.6}
.sec-index{font-family:var(--mono);font-size:.75rem;opacity:.4}
h2{font-size:clamp(2rem,5vw,3.8rem);font-weight:900;letter-spacing:.06em;line-height:1.25}
.lm{display:block;overflow:hidden}
.lm>span{display:block;transform:translateY(112%);transition:transform 1.1s var(--ease)}
.lm:nth-child(2)>span{transition-delay:.12s}
.in .lm>span{transform:none}
.rv{opacity:0;transform:translateY(46px);transition:opacity 1s var(--ease),transform 1s var(--ease);transition-delay:var(--d,0s)}
.in .rv{opacity:1;transform:none}
/* subpage hero */
.p-hero{min-height:62vh;display:flex;align-items:center;padding:14rem 4rem 6rem}
.p-hero .wrap{width:100%}
.p-title{font-size:clamp(2.6rem,7vw,5.5rem);font-weight:900;letter-spacing:.06em}
.p-lead{margin-top:2rem;max-width:60ch;line-height:2;opacity:.8}
/* rows(services index) */
.svc-grid{display:grid;grid-template-columns:280px 1fr;gap:4rem}
.svc-side{position:sticky;top:120px;align-self:start}
.svc-idx{display:block;font-size:6rem;font-weight:900;line-height:1;margin-top:1rem}
.row{display:grid;grid-template-columns:6rem 1fr auto;gap:2rem;align-items:center;padding:2.6rem 1.2rem;border-top:1px solid rgba(255,255,255,.15);transition:background .35s var(--ease),color .35s var(--ease)}
.row:last-of-type{border-bottom:1px solid rgba(255,255,255,.15)}
.row:hover{background:var(--wht);color:var(--blk)}
.row-num{font-family:var(--mono);font-size:.875rem;letter-spacing:.2em;opacity:.55}
.row h3{font-size:clamp(1.4rem,3vw,2.2rem);font-weight:900;letter-spacing:.08em;margin-bottom:.5rem}
.row p{font-size:.875rem;line-height:1.8;opacity:.75;max-width:56ch}
.row-tags{font-family:var(--mono);font-size:.625rem;letter-spacing:.2em;margin-top:.7rem;opacity:.6}
.row-arrow{font-size:1.6rem;transition:transform .35s var(--ease)}
.row:hover .row-arrow{transform:translateX(10px)}
/* principles */
.principles{display:grid;grid-template-columns:repeat(3,1fr);gap:1.5rem}
.principle{border:1px solid rgba(255,255,255,.18);padding:2.5rem 2rem;transition:.35s var(--ease)}
.principle:hover{background:var(--wht);color:var(--blk)}
.principle .num{font-family:var(--mono);font-size:.75rem;opacity:.5}
.principle h3{font-size:1.4rem;font-weight:900;letter-spacing:.1em;margin:1rem 0}
.principle p{font-size:.875rem;line-height:1.9;opacity:.8}
/* spec dl */
.spec{display:grid;grid-template-columns:220px 1fr;gap:1.2rem 3rem;padding:1.4rem 0;border-top:1px solid rgba(255,255,255,.15);font-size:.9375rem}
.spec dt{font-family:var(--mono);font-size:.75rem;letter-spacing:.25em;opacity:.6;padding-top:.2rem}
.spec dd{line-height:1.8}
/* service detail */
.svc-detail{border-top:1px solid rgba(255,255,255,.15);padding:4rem 0;display:grid;grid-template-columns:10rem 1fr 1fr;gap:3rem}
.svc-detail .big{font-size:3rem;font-weight:900;opacity:.25;font-family:var(--mono)}
.svc-detail h3{font-size:clamp(1.6rem,3vw,2.4rem);font-weight:900;letter-spacing:.08em;margin-bottom:1.2rem}
.svc-detail p{line-height:2;opacity:.85;font-size:.9375rem}
.tags{display:flex;flex-wrap:wrap;gap:.6rem;margin-top:1.5rem}
.tag{font-family:var(--mono);font-size:.625rem;letter-spacing:.2em;border:1px solid rgba(255,255,255,.3);padding:.45rem .8rem}
.process{display:flex;gap:1rem;flex-wrap:wrap;margin-top:2rem}
.step{flex:1;min-width:140px;border:1px solid rgba(255,255,255,.15);padding:1.2rem}
.s-num{font-family:var(--mono);font-size:.625rem;opacity:.5}
.step h4{font-size:.8125rem;font-weight:700;letter-spacing:.15em;margin:.5rem 0 .4rem}
.step p{font-size:.75rem;opacity:.7;line-height:1.7}
/* works */
.works-grid{display:grid;grid-template-columns:1fr 1fr;gap:1.5rem}
.work{position:relative;aspect-ratio:16/10;border:1px solid rgba(255,255,255,.18);overflow:hidden;background:var(--g9);padding:1.6rem;display:flex;flex-direction:column;justify-content:space-between}
.work .sweep{position:absolute;inset:-60%;background:linear-gradient(105deg,transparent 44%,rgba(255,255,255,.16) 50%,transparent 56%);transform:translateX(-100%);transition:transform .9s var(--ease)}
.work:hover .sweep{transform:translateX(100%)}
.work.hidden{display:none}
.work-idx{font-family:var(--mono);font-size:.75rem;letter-spacing:.2em;opacity:.5}
.work h3{font-size:1.5rem;font-weight:900;letter-spacing:.08em;transition:letter-spacing .4s var(--ease)}
.work:hover h3{letter-spacing:.16em}
.work-cat{font-family:var(--mono);font-size:.625rem;letter-spacing:.25em;opacity:.6;margin-top:.4rem}
.filters{display:flex;gap:.8rem;flex-wrap:wrap;margin-bottom:3rem}
.filter{background:none;border:1px solid rgba(255,255,255,.35);color:var(--wht);font-family:var(--mono);font-size:.6875rem;letter-spacing:.2em;padding:.6rem 1.2rem;transition:.3s}
.filter:hover,.filter[aria-pressed="true"]{background:var(--wht);color:var(--blk)}
/* news */
.news-row{display:grid;grid-template-columns:140px 120px 1fr auto;gap:2rem;align-items:baseline;padding:1.8rem 1rem;border-top:1px solid rgba(255,255,255,.15);text-decoration:none;color:var(--wht);transition:background .3s,color .3s}
.news-row:last-of-type{border-bottom:1px solid rgba(255,255,255,.15)}
.news-row:hover{background:var(--wht);color:var(--blk)}
.news-date{font-family:var(--mono);font-size:.75rem;opacity:.6}
.news-cat{font-family:var(--mono);font-size:.625rem;letter-spacing:.2em;border:1px solid currentColor;padding:.3rem .6rem}
.news-title{font-weight:700;letter-spacing:.04em}
/* form */
.form-grid{display:grid;grid-template-columns:1fr 1fr;gap:2.5rem 3rem}
.field{display:flex;flex-direction:column;gap:.8rem}
.field.full{grid-column:1/-1}
.field label{font-family:var(--mono);font-size:.6875rem;letter-spacing:.25em;opacity:.7}
.field input,.field textarea,.field select{background:transparent;border:0;border-bottom:1px solid rgba(255,255,255,.35);color:var(--wht);font-family:var(--sans);font-size:1rem;padding:.8rem 0;border-radius:0;outline:none}
.field :is(input,textarea,select):focus{border-color:var(--wht);box-shadow:0 1px 0 var(--wht)}
.field textarea{min-height:140px;resize:vertical}
.field select option{color:#000}
.checks{display:flex;flex-wrap:wrap;gap:1rem}
.check{display:flex;align-items:center;gap:.6rem;font-size:.8125rem}
.check input{accent-color:#fff}
/* contact */
.contact{text-align:center}
.cta{display:inline-block;margin-top:3.5rem;padding:1.4rem 4rem;border:1px solid var(--wht);color:var(--wht);text-decoration:none;font-weight:900;letter-spacing:.3em;font-size:.875rem;position:relative;overflow:hidden;clip-path:polygon(12px 0,100% 0,100% calc(100% - 12px),calc(100% - 12px) 100%,0 100%,0 12px);transition:.35s var(--ease)}
.cta::before{content:"";position:absolute;inset:0;background:var(--wht);transform:translateX(-101%);transition:transform .35s var(--ease);z-index:-1}
.cta:hover{color:var(--blk)}
.cta:hover::before{transform:translateX(0)}
footer{position:relative;z-index:2;padding:3rem 4rem;border-top:1px solid rgba(255,255,255,.12);display:flex;justify-content:space-between;font-family:var(--mono);font-size:.6875rem;letter-spacing:.15em;opacity:.55}
footer nav{display:flex;gap:2rem}
footer a{color:var(--wht);text-decoration:none}
@media (max-width:900px){
header{padding:.9rem 1.2rem;flex-wrap:wrap;gap:.5rem}.nav-coord,.side-label,.panel{display:none}
/* ⚠️ 5項目のナビは390px幅で右端がはみ出し、最後のMUSICが画面外＝到達不能になっていた。
   スマホではナビを2段目に回して全項目を必ず画面内に収める */
.nav-links{width:100%;justify-content:center;flex-wrap:wrap;row-gap:.2rem}
.nav-links a{padding:0 .5rem;font-size:.625rem}
.nav-links li:not(:first-child) a::before{left:-2px}
section{padding:4.5rem 1.5rem}
/* スマホは縦が短い。ヒーローの余白とmin-heightを詰めて、本文(曲一覧など)を折り返し前に見せる */
.p-hero{padding:7.5rem 1.5rem 2rem;min-height:auto}
.works-grid,.principles,.form-grid{grid-template-columns:1fr}
.svc-grid{grid-template-columns:1fr}.svc-side{position:static}.svc-idx{display:none}
.row{grid-template-columns:3rem 1fr;gap:1rem}.row-arrow{display:none}
.svc-detail{grid-template-columns:1fr;gap:1.5rem}
.spec{grid-template-columns:1fr;gap:.4rem}
.news-row{grid-template-columns:1fr;gap:.6rem}
.hud-l{left:52px}.hud-r{display:none}
footer{flex-direction:column;gap:1rem;padding:2rem 1.5rem}
}
@media (prefers-reduced-motion:reduce){
*,*::before,*::after{animation-duration:.01ms!important;animation-iteration-count:1!important;transition-duration:.01ms!important}
.rv,.lm>span{opacity:1;transform:none}
.ch{opacity:1;transform:none;filter:none}.hero-sub{opacity:.75;transform:none}
:root{--sx:0px;--sy:0px;--beat:0}
}
/* ===== MUSIC LIBRARY ===== */
/* 固定HUDはstickyな再生バーと重なるため、musicページは本文内にトグルを置く */
.hud-inline{margin-top:2.2rem;display:flex;gap:1rem}
.hud-inline button{background:none;border:1px solid rgba(255,255,255,.4);color:var(--wht);
  font-family:var(--mono);font-size:.6875rem;letter-spacing:.15em;padding:.5rem 1rem;transition:.3s}
.hud-inline button:hover,.hud-inline button[aria-pressed="true"]{background:var(--wht);color:var(--blk)}
.tracks{border-top:1px solid rgba(255,255,255,.15)}
.track{display:grid;grid-template-columns:4rem 1fr auto 5rem;gap:2rem;align-items:center;width:100%;
  padding:2rem 1.2rem;border-bottom:1px solid rgba(255,255,255,.15);background:none;border-left:0;border-right:0;border-top:0;
  color:var(--wht);font-family:var(--sans);text-align:left;transition:background .35s var(--ease),color .35s var(--ease)}
.track:hover{background:var(--wht);color:var(--blk)}
.track[aria-current="true"]{background:var(--wht);color:var(--blk)}
.track-num{font-family:var(--mono);font-size:.875rem;letter-spacing:.2em;opacity:.55}
.track-title{display:block;font-size:clamp(1.2rem,2.6vw,1.8rem);font-weight:900;letter-spacing:.06em}
.track-meta{display:block;font-family:var(--mono);font-size:.625rem;letter-spacing:.2em;opacity:.6;margin-top:.5rem}
.track-time{font-family:var(--mono);font-size:.8125rem;opacity:.7}
.track-play{font-family:var(--mono);font-size:.75rem;letter-spacing:.2em}
.np{position:sticky;bottom:0;margin-top:4rem;border:1px solid rgba(255,255,255,.25);background:rgba(6,6,6,.92);
  backdrop-filter:blur(8px);padding:1.4rem 1.6rem;display:grid;grid-template-columns:1fr auto;gap:1.2rem;align-items:center}
.np[hidden]{display:none}
.np-title{font-family:var(--mono);font-size:.75rem;letter-spacing:.25em}
.np-bar{grid-column:1/-1;height:2px;background:rgba(255,255,255,.2);position:relative;cursor:pointer}
.np-fill{position:absolute;inset:0;width:0;background:var(--wht);box-shadow:0 0 10px rgba(255,255,255,.7)}
.np-time{font-family:var(--mono);font-size:.6875rem;opacity:.7}
@media (max-width:900px){
.track{grid-template-columns:2.5rem 1fr auto;gap:1rem;padding:1.5rem .4rem}
.track-play{display:none}
}
/* ===== ARCHIVE ===== */
.archive-list{border-top:1px solid rgba(255,255,255,.15)}
.a-entry{display:grid;grid-template-columns:11rem 1fr;gap:2.5rem;align-items:start;padding:3.5rem 0;border-bottom:1px solid rgba(255,255,255,.15)}
.a-year{margin:0;font-family:var(--mono);font-size:1.7rem;font-weight:600;opacity:.6;letter-spacing:.02em;white-space:nowrap}
.a-frame{position:relative;border:1px solid rgba(255,255,255,.35);padding:14px}
.a-frame i{position:absolute;width:16px;height:16px;border:1px solid rgba(255,255,255,.7);pointer-events:none;font-style:normal}
.a-frame i:nth-child(1){top:-1px;left:-1px;border-right:0;border-bottom:0}
.a-frame i:nth-child(2){top:-1px;right:-1px;border-left:0;border-bottom:0}
.a-frame i:nth-child(3){bottom:-1px;left:-1px;border-right:0;border-top:0}
.a-frame i:nth-child(4){bottom:-1px;right:-1px;border-left:0;border-top:0}
.a-frame img{display:block;width:100%;max-width:100%;min-height:180px;background:rgba(255,255,255,.04);filter:grayscale(1);object-fit:cover;transition:filter .3s var(--ease)}
body.is-color .a-frame img{filter:none}
.a-meta{margin-top:1.2rem;font-family:var(--mono);font-size:.75rem;line-height:1.9;opacity:.7}
.a-meta p{margin:0}
@media (max-width:900px){
.a-entry{grid-template-columns:1fr;gap:1rem;padding:2.4rem 0}
.a-year{font-size:1.3rem}
}