/* UTSUROI うつろい — SAMPLE 03 · PREMIUM (Novaia Labs, self-initiated, fictional dye brand).
   Art direction: unbleached-linen ground, sumi ink, two dyes (ai #1d2a4d / akane #b8482f); Zen Old Mincho (Latin included) for display, Zen Kaku Gothic New for small text.
   The one main interaction: wind. The pointer / touch / a button lifts the cloth so its BACK dye shows (hero + product). Everything else is quiet. */
:root { --bg: #efeae1; --ink: #1a1a1c; --ink-2: #5c5852; --ai: #1d2a4d; --akane: #b8482f; --akane-t: #9f3a23; --line: rgba(26, 26, 28, .22);
  --serif: "Zen Old Mincho", "Hiragino Mincho ProN", "Yu Mincho", serif; --sans: "Zen Kaku Gothic New", "Hiragino Sans", "Yu Gothic", sans-serif; --gut: clamp(18px, 3.6vw, 56px); }
* { box-sizing: border-box; margin: 0; }
html { scroll-behavior: smooth; -webkit-text-size-adjust: 100%; }
body { background: var(--bg); color: var(--ink); font: 400 16px/1.95 var(--sans); letter-spacing: .06em; -webkit-font-smoothing: antialiased; }
a { color: inherit; text-decoration: none; } a:focus-visible, button:focus-visible, input:focus-visible + span, summary:focus-visible { outline: 2px solid var(--akane); outline-offset: 4px; }
.sr { position: absolute; width: 1px; height: 1px; overflow: hidden; clip-path: inset(50%); white-space: nowrap; }
.skip { position: absolute; left: 12px; top: -60px; z-index: 60; padding: 10px 16px; background: var(--ink); color: var(--bg); } .skip:focus { top: 12px; }
em, i { font-style: normal; }
.top { position: fixed; z-index: 40; inset: 0 0 auto 0; display: flex; justify-content: space-between; align-items: center; padding: clamp(14px, 1.8vw, 26px) var(--gut); transition: background .4s; }
.top.bar { background: rgba(239, 234, 225, .9); backdrop-filter: blur(8px); -webkit-backdrop-filter: blur(8px); }
.logo { display: inline-flex; align-items: baseline; gap: 12px; } .logo b { font: 700 17px/1 var(--serif); letter-spacing: .3em; } .logo i { font: 500 13px/1 var(--serif); letter-spacing: .24em; color: var(--ink-2); }
.top nav { display: flex; gap: clamp(18px, 2.6vw, 40px); }
.top nav a { position: relative; display: inline-flex; align-items: baseline; gap: 8px; padding: .8em 0; font: 500 12.5px/1 var(--serif); letter-spacing: .22em; text-transform: uppercase; } .top nav a i { font: 500 12px/1 var(--sans); letter-spacing: .1em; color: var(--ink-2); text-transform: none; }
.top nav a::after { content: ""; position: absolute; left: 0; right: 0; bottom: .3em; height: 1px; background: currentColor; transform: scaleX(0); transform-origin: right; transition: transform .55s cubic-bezier(.65, 0, .25, 1); } .top nav a:hover::after, .top nav a:focus-visible::after, .top nav a[aria-current="page"]::after { transform: scaleX(1); transform-origin: left; }

/* hero: text left, the cloth right */
.hero { position: relative; min-height: 100vh; min-height: 100svh; display: grid; grid-template-columns: minmax(0, .82fr) minmax(0, 1fr); align-items: stretch; }
.hero-txt { display: flex; flex-direction: column; justify-content: center; padding: 96px 2vw 56px var(--gut); }
.k { display: flex; gap: 1.4em; align-items: baseline; margin-bottom: clamp(16px, 2.6vh, 28px); font: 500 12.5px/1.6 var(--sans); letter-spacing: .16em; color: var(--ink-2); } .k span { font: 700 12.5px/1.6 var(--serif); letter-spacing: .3em; color: var(--akane-t); }
.hero h1 { font: 700 clamp(56px, 7.2vw, 128px)/1.12 var(--serif); letter-spacing: .04em; }
.lead { margin-top: clamp(16px, 2.6vh, 30px); font: 500 clamp(15px, 1.2vw, 19px)/2.1 var(--serif); letter-spacing: .1em; color: var(--ink-2); max-width: 26em; } .lead--l { max-width: 34em; font-size: clamp(15px, 1.25vw, 19px); }
.side { display: grid; gap: 4px; margin-top: clamp(22px, 4vh, 44px); font: 500 clamp(15px, 1.2vw, 18px)/1.8 var(--serif); letter-spacing: .12em; } .side b { font-weight: 700; }
.side span { display: flex; align-items: center; gap: 14px; color: var(--ink-2); font-weight: 500; transition: color .6s; } .side span::before { content: ""; width: 26px; height: 1px; background: currentColor; transition: width .6s; } .side .is-on { color: var(--ink); } .side .is-on::before { width: 46px; }
.side .s-f.is-on b { color: var(--ai); } .side .s-b.is-on b { color: var(--akane-t); }
.ctl { display: flex; align-items: center; flex-wrap: wrap; gap: 18px 28px; margin-top: clamp(18px, 3vh, 34px); }
.btn { display: inline-flex; align-items: center; gap: 18px; padding: 12px 0; border: 0; border-bottom: 1px solid currentColor; background: transparent; color: inherit; font: 500 15px/1.4 var(--sans); letter-spacing: .14em; cursor: pointer; }
.btn i, .all i, .back i, .chip i { display: inline-block; width: 28px; height: 1px; background: currentColor; transition: width .5s cubic-bezier(.2, .7, .1, 1); } .btn:hover i, .all:hover i, .back:hover i { width: 52px; }
.btn--solid { margin-top: 22px; padding: 14px 22px; border: 1px solid var(--ink); background: var(--ink); color: var(--bg); } .btn--solid:hover { background: transparent; color: var(--ink); }
.hint { font: 400 13px/1.7 var(--sans); color: var(--ink-2); }
.dyes { margin: clamp(18px, 3vh, 32px) 0 0; padding: 0; border: 0; display: flex; flex-wrap: wrap; gap: 8px 10px; } .dyes legend { width: 100%; margin-bottom: 8px; font: 500 12.5px/1.6 var(--sans); letter-spacing: .16em; color: var(--ink-2); }
.dyes label { cursor: pointer; } .dyes input { position: absolute; opacity: 0; } .dyes span { display: grid; gap: 2px; padding: 8px 16px 9px; border: 1px solid var(--line); border-radius: 2px; transition: border-color .3s, background .3s, color .3s; } .dyes b { font: 700 14px/1.4 var(--serif); letter-spacing: .12em; } .dyes i { font: 500 11.5px/1.4 var(--sans); letter-spacing: .14em; color: var(--ink-2); }
.dyes input:checked + span { border-color: var(--ink); background: var(--ink); color: var(--bg); } .dyes input:checked + span i { color: rgba(239, 234, 225, .75); }
.hero-cv { position: relative; min-height: 100svh; } .hero-cv canvas, .prod-cv canvas { position: absolute; inset: 0; width: 100%; height: 100%; display: block; touch-action: none; cursor: grab; } .hero-cv canvas.touched, .prod-cv canvas.touched { cursor: default; }
.poster { position: absolute; inset: 0; width: 100%; height: 100%; object-fit: contain; pointer-events: none; opacity: 0; } html.no-gl canvas { display: none; } html.no-gl .poster { opacity: 1; } html:not(.gl-ready) canvas { opacity: 0; } canvas { transition: opacity .5s; }

.sec { max-width: 1560px; margin: 0 auto; padding: clamp(84px, 11vw, 180px) var(--gut) 0; }
.sh { display: flex; justify-content: space-between; align-items: baseline; gap: 24px; padding-top: 14px; border-top: 1px solid var(--ink); margin-bottom: clamp(32px, 4.4vw, 68px); }
.sh h2 { display: flex; align-items: baseline; gap: 1.2em; font: 700 clamp(24px, 2.6vw, 40px)/1.5 var(--serif); letter-spacing: .1em; } .sh h2 em { font: 500 12px/1 var(--serif); letter-spacing: .24em; color: var(--ink-2); text-transform: uppercase; }
.no { font: 700 12.5px/1 var(--serif); letter-spacing: .2em; color: var(--akane-t); }
.all { display: inline-flex; align-items: center; gap: 18px; font: 500 14px/1.4 var(--sans); letter-spacing: .12em; padding: 10px 0; border-bottom: 1px solid currentColor; }
.faces { display: grid; grid-template-columns: repeat(2, minmax(0, 1fr)); gap: clamp(18px, 3vw, 56px); } .faces figure { margin: 0; } .faces img { display: block; width: 100%; height: auto; aspect-ratio: 1; object-fit: contain; background: rgba(26, 26, 28, .035); }
.faces figcaption { margin-top: 14px; font: 500 15px/1.9 var(--serif); letter-spacing: .1em; color: var(--ink-2); } .faces figcaption b { display: inline-block; margin-right: 1em; font: 700 17px var(--serif); color: var(--ink); }
.cols { list-style: none; padding: 0; display: grid; grid-template-columns: repeat(3, minmax(0, 1fr)); gap: clamp(18px, 2.6vw, 44px); }
.cols a { display: grid; gap: 4px; } .cimg { position: relative; display: block; aspect-ratio: 1; margin-bottom: 14px; overflow: hidden; background: rgba(26, 26, 28, .035); } .cimg img { position: absolute; inset: 0; width: 100%; height: 100%; object-fit: contain; transition: opacity .7s; } .cimg .bk { opacity: 0; }
@media (hover: hover) { .cols a:hover .bk, .cols a:focus-visible .bk { opacity: 1; } }
.cols b { font: 700 clamp(18px, 1.5vw, 24px)/1.5 var(--serif); letter-spacing: .1em; } .cols em { font: 500 12px/1.6 var(--serif); letter-spacing: .22em; color: var(--ink-2); } .meta { font-size: 13.5px; color: var(--ink-2); }
.sec--story .quote, .quote { font: 700 clamp(30px, 4.4vw, 76px)/1.55 var(--serif); letter-spacing: .06em; margin-bottom: clamp(22px, 3vw, 44px); } .quote mark { background: none; color: var(--akane); }
.sec--cta { padding-bottom: clamp(70px, 9vw, 140px); } .cta-t { font: 700 clamp(28px, 3.8vw, 62px)/1.6 var(--serif); letter-spacing: .06em; margin-bottom: 28px; }
.pagehead { max-width: 1560px; margin: 0 auto; padding: clamp(120px, 14vw, 220px) var(--gut) 0; } .pagehead .no { margin-bottom: 18px; display: block; } .pagehead h1 { font: 700 clamp(44px, 7vw, 120px)/1.15 var(--serif); letter-spacing: .04em; } .pagehead .lead { margin-top: 24px; max-width: 34em; }
.fine { margin-top: 18px; font-size: 13px; color: var(--ink-2); }
.prod { display: grid; grid-template-columns: minmax(0, 1.05fr) minmax(0, .95fr); min-height: 100svh; }
.prod-cv { position: relative; min-height: 100svh; } .prod-txt { padding: 110px var(--gut) 60px 2vw; display: flex; flex-direction: column; justify-content: center; }
.p-name { font: 700 clamp(34px, 4vw, 68px)/1.3 var(--serif); letter-spacing: .06em; } .p-name span { color: var(--ink-2); font-size: .62em; letter-spacing: .14em; }
.facts { margin: clamp(20px, 3vh, 36px) 0 0; } .facts div { display: grid; grid-template-columns: 6.5em minmax(0, 1fr); gap: 16px; padding: 11px 0; border-top: 1px solid var(--line); } .facts div:last-child { border-bottom: 1px solid var(--line); }
.facts dt { font: 500 12.5px/1.9 var(--sans); letter-spacing: .14em; color: var(--ink-2); } .facts dd { margin: 0; font: 500 15.5px/1.8 var(--serif); letter-spacing: .08em; } .facts small { display: block; font: 400 12.5px/1.7 var(--sans); color: var(--ink-2); }
.how { list-style: none; padding: 0; counter-reset: h; display: grid; grid-template-columns: repeat(3, minmax(0, 1fr)); border-top: 1px solid var(--ink); } .how li { counter-increment: h; display: grid; gap: 6px; align-content: start; padding: 20px clamp(10px, 1.6vw, 28px) 24px 0; } .how li + li { padding-left: clamp(10px, 1.6vw, 28px); border-left: 1px solid var(--line); }
.how li::before { content: "0" counter(h); font: 700 13px/1 var(--serif); color: var(--akane-t); letter-spacing: .2em; } .how b { font: 700 clamp(17px, 1.4vw, 22px)/1.6 var(--serif); letter-spacing: .1em; } .how span { font-size: 15px; color: var(--ink-2); }
.sec--tl { position: relative; } .tl { list-style: none; padding: 0 0 0 clamp(28px, 4vw, 64px); display: grid; gap: clamp(36px, 5vw, 80px); } .tl li { display: grid; grid-template-columns: 4em minmax(0, .8fr) minmax(0, 1.2fr); gap: clamp(14px, 3vw, 48px); align-items: baseline; padding-top: 18px; border-top: 1px solid var(--line); }
.tl .n { font: 700 clamp(30px, 4vw, 64px)/1 var(--serif); color: var(--akane-t); } .tl h3 { font: 700 clamp(20px, 2vw, 32px)/1.5 var(--serif); letter-spacing: .1em; } .tl p { font: 500 15.5px/2 var(--serif); letter-spacing: .08em; color: var(--ink-2); max-width: 30em; }
.tl-rail { position: absolute; left: var(--gut); top: clamp(84px, 11vw, 180px); bottom: 0; width: 1px; background: var(--line); } .tl-rail i { display: block; width: 3px; margin-left: -1px; height: calc(var(--tp, 0) * 100%); background: linear-gradient(var(--ai), var(--akane)); }
.two { display: grid; grid-template-columns: repeat(2, minmax(0, 1fr)); gap: clamp(32px, 6vw, 112px); align-items: start; } .stock { list-style: none; padding: 0; } .stock li { display: flex; justify-content: space-between; gap: 16px; padding: 14px 0; border-top: 1px solid var(--line); } .stock li:last-child { border-bottom: 1px solid var(--line); } .stock b { font: 700 16px var(--serif); letter-spacing: .1em; } .stock span { color: var(--ink-2); font-size: 14px; }
.foot { margin-top: clamp(60px, 8vw, 130px); background: var(--ink); color: var(--bg); padding: clamp(40px, 5vw, 80px) var(--gut) 100px; }
.foot-in { display: grid; grid-template-columns: minmax(0, 1.1fr) minmax(0, 1fr); gap: clamp(32px, 6vw, 112px); max-width: 1560px; margin: 0 auto; }
.fiction { font: 400 14px/2 var(--sans); color: rgba(239, 234, 225, .82); } .fiction b { display: block; font: 700 clamp(17px, 1.5vw, 22px)/1.8 var(--serif); color: var(--bg); margin-bottom: 8px; letter-spacing: .08em; }
.spec-k { font: 700 12.5px/1.8 var(--serif); letter-spacing: .16em; color: #f0a48e; margin-bottom: 8px; } .spec ul { list-style: none; padding: 0; } .spec li { padding: 8px 0; border-top: 1px solid rgba(239, 234, 225, .22); font-size: 14px; } .spec-n { margin-top: 12px; font-size: 13px; line-height: 1.9; color: rgba(239, 234, 225, .75); }
.back { display: inline-flex; align-items: center; gap: 16px; margin-top: 18px; padding: 10px 0; border-bottom: 1px solid currentColor; font: 500 14px/1.4 var(--sans); letter-spacing: .12em; }
.copy { max-width: 1560px; margin: 40px auto 0; font: 400 12px/1.6 var(--sans); letter-spacing: .1em; color: rgba(239, 234, 225, .6); }
.chip { position: fixed; z-index: 45; left: 50%; bottom: 14px; transform: translateX(-50%); display: inline-flex; align-items: center; gap: 12px; padding: 9px 16px; border-radius: 99px; background: rgba(26, 26, 28, .92); color: var(--bg); font: 700 11.5px/1 var(--serif); letter-spacing: .14em; white-space: nowrap; } .chip span { opacity: .75; font: 500 11.5px var(--sans); letter-spacing: .08em; }
.js .rv { opacity: 0; transform: translateY(18px); transition: opacity 1s ease, transform 1.2s cubic-bezier(.16, .84, .2, 1); } .js .rv.in { opacity: 1; transform: none; }

@media (max-width: 900px) {
  .logo i, .top nav a i { display: none; } .logo b { font-size: 15px; letter-spacing: .22em; } .top nav { gap: 14px; } .top nav a { font-size: 11.5px; letter-spacing: .12em; }
  .hero { grid-template-columns: minmax(0, 1fr); grid-template-rows: auto auto; } .hero-cv { order: -1; min-height: 0; height: 60svh; margin-top: 56px; } .hero-txt { padding: 12px var(--gut) 40px; }
  .hero h1 { font-size: clamp(46px, 14vw, 72px); } .dyes span { padding: 7px 12px 8px; }
  .prod { grid-template-columns: minmax(0, 1fr); } .prod-cv { min-height: 0; height: 58svh; margin-top: 56px; } .prod-txt { padding: 18px var(--gut) 20px; }
  .faces, .cols, .how, .two, .foot-in { grid-template-columns: minmax(0, 1fr); } .how li + li { border-left: 0; border-top: 1px solid var(--line); padding-left: 0; }
  .tl { padding-left: 24px; } .tl li { grid-template-columns: 2.6em minmax(0, 1fr); } .tl p { grid-column: 2; } .chip span { display: none; } .sh { flex-direction: column; gap: 8px; align-items: flex-start; }
}
@media (prefers-reduced-motion: reduce) { html { scroll-behavior: auto; } .side span, .side span::before, .cimg img, .top nav a::after { transition: none; } }

.gust-btn { position: absolute; z-index: 3; left: 8%; bottom: 22px; display: inline-flex; align-items: center; gap: 16px; padding: 13px 22px; border: 1px solid var(--ink); background: rgba(239, 234, 225, .88); color: var(--ink); font: 500 15px/1.4 var(--sans); letter-spacing: .14em; cursor: pointer; backdrop-filter: blur(6px); transition: background .3s, color .3s; }
.gust-btn i { display: inline-block; width: 24px; height: 1px; background: currentColor; transition: width .5s cubic-bezier(.2, .7, .1, 1); } .gust-btn:hover { background: var(--ink); color: var(--bg); } .gust-btn:hover i { width: 44px; }
@media (max-width: 900px) { .gust-btn { left: var(--gut); bottom: 14px; padding: 11px 18px; } }

/* header labels never wrap */
.top, .top a, .top nav a, .logo, .top .shop { white-space: nowrap; }

.rod { position: absolute; z-index: 2; left: var(--rod-x, 0); top: var(--rod-y, 0); width: var(--rod-w, 0); height: 9px; border-radius: 5px; pointer-events: none; background: linear-gradient(#d8d0c1, #9a9283 55%, #6c6559); box-shadow: 0 8px 16px rgba(26, 26, 28, .16), inset 0 1px 0 rgba(255, 255, 255, .5); }
.rod::before, .rod::after { content: ""; position: absolute; top: -3px; width: 15px; height: 15px; border-radius: 50%; background: radial-gradient(circle at 35% 30%, #e4dccd, #7d7568); box-shadow: 0 3px 6px rgba(0, 0, 0, .2); } .rod::before { left: -9px; } .rod::after { right: -9px; }
html:not(.gl-ready) .rod { opacity: 0; } .rod { transition: opacity .5s; }



/* desktop: keep the rod clear of the header and the wind button clear of the fixed sample chip */
@media (min-width: 901px) { .hero-cv canvas, .prod-cv canvas { top: 72px; height: calc(100% - 72px); } .gust-btn { bottom: 76px; } }

.hero-cv canvas, .prod-cv canvas { filter: drop-shadow(16px 20px 14px rgba(26, 26, 28, .24)); }