/* FUBUKI BLOCKS — runrobrun-inspired system; colour after oasiz + jyuutaku-family */
:root {
  color-scheme: light;
  /* palette: oasiz (neon green on light gray / green-to-black) + jyuutaku-family (charcoal, sky blue) */
  --bg: #f2f3f4;
  --ink: #22262b;
  --signal: #00e64b;
  --signal-ink: #00a83a;
  --sky: #6ac3f1;
  --deep: #06140b;
  --paper: #e7eaec;
  --muted: #5b6068;
  --rule: rgba(34, 38, 43, .85);
  --soft: rgba(34, 38, 43, .16);
  --wrap: 1376px;
  --gutter: 32px;
  --mono: "IBM Plex Mono", ui-monospace, Menlo, monospace;
  --display: "Archivo", "Helvetica Neue", Arial, sans-serif;
  --jp: "Hiragino Kaku Gothic ProN", "Hiragino Sans", "Yu Gothic", Meiryo, sans-serif;
}

* { box-sizing: border-box; }
html { scroll-behavior: smooth; }
body {
  margin: 0;
  background: var(--bg);
  color: var(--ink);
  font-family: var(--jp);
  -webkit-font-smoothing: antialiased;
  overflow-x: hidden;
}
a { color: inherit; text-decoration: none; }
button, a { font: inherit; }
button { cursor: pointer; }
::selection { background: var(--signal); color: var(--ink); }
:focus-visible { outline: 2px solid var(--signal); outline-offset: 3px; }
h1, h2, h3, .lead, .issues li, .checks li { word-break: keep-all; overflow-wrap: anywhere; }
p { word-break: auto-phrase; }
.nw { white-space: nowrap; }
.wrap { width: min(calc(100% - var(--gutter) * 2), var(--wrap)); margin-inline: auto; }
.skip-link { position: absolute; top: -100px; left: 12px; background: #fff; color: #000; padding: 12px; z-index: 100; }
.skip-link:focus { top: 12px; }
.sq { display: inline-block; width: 7px; height: 7px; background: currentColor; flex: none; }

/* paper noise */
body:after {
  content: ""; position: fixed; inset: 0; z-index: 80; pointer-events: none; opacity: .35; mix-blend-mode: multiply;
  background-image: url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' width='180' height='180'%3E%3Cfilter id='n'%3E%3CfeTurbulence type='fractalNoise' baseFrequency='.9' numOctaves='3' stitchTiles='stitch'/%3E%3CfeColorMatrix values='0 0 0 0 .5 0 0 0 0 .5 0 0 0 0 .5 0 0 0 .5 0'/%3E%3C/filter%3E%3Crect width='100%25' height='100%25' filter='url(%23n)'/%3E%3C/svg%3E");
}

/* viewport crosshairs */
.frame-marks i { position: fixed; z-index: 70; width: 13px; height: 13px; pointer-events: none; mix-blend-mode: difference; }
.frame-marks i:before, .frame-marks i:after { content: ""; position: absolute; background: #f2f2f0; }
.frame-marks i:before { left: 6px; top: 0; width: 1px; height: 13px; }
.frame-marks i:after { top: 6px; left: 0; height: 1px; width: 13px; }
.frame-marks .tl { top: 10px; left: 10px; } .frame-marks .tr { top: 10px; right: 10px; }
.frame-marks .tc { top: 10px; left: calc(50% - 6px); }
.frame-marks .bl { bottom: 10px; left: 10px; } .frame-marks .br { bottom: 10px; right: 10px; }
.frame-marks .bc { bottom: 10px; left: calc(50% - 6px); }

/* rolling text (hover swaps to a copy rising from below) */
.roll { display: inline-block; overflow: hidden; vertical-align: top; line-height: 1.3; }
.roll-in { display: block; position: relative; transition: transform .45s cubic-bezier(.7, 0, .2, 1); }
.roll-in:after { content: attr(data-text); position: absolute; left: 0; top: 100%; white-space: nowrap; }
a:hover .roll-in, a:focus-visible .roll-in { transform: translateY(-100%); }

/* header */
.site-header {
  position: absolute; z-index: 20; top: 0; left: 0; right: 0; height: 64px;
  display: grid; grid-template-columns: 1fr auto 1fr; align-items: center; gap: 24px;
  padding: 0 var(--gutter); border-bottom: 1px solid rgba(242, 243, 244, .28); color: #f2f3f4;
  font-family: var(--mono); font-size: 12px; letter-spacing: .06em;
}
.brand { display: flex; align-items: center; gap: 10px; font-family: var(--display); font-stretch: 125%; font-weight: 800; font-size: 14px; letter-spacing: .01em; }
.brand-mark { display: inline-grid; grid-template-columns: repeat(2, 7px); gap: 2px; }
.brand-mark i { width: 7px; height: 7px; background: currentColor; }
.brand-mark i:nth-child(2), .brand-mark i:nth-child(3) { background: var(--signal); }
.site-header nav { display: flex; gap: 34px; }
.header-cta { justify-self: end; display: inline-flex; align-items: center; gap: 12px; border: 1px solid currentColor; padding: 9px 14px; }
.header-cta .sq { background: var(--signal); }

/* buttons */
.btn {
  display: inline-flex; align-items: center; justify-content: space-between; gap: 28px;
  min-height: 48px; padding: 0 16px; border: 1px solid var(--ink);
  font-size: 13px; font-weight: 700; letter-spacing: .04em; transition: background .25s, color .25s;
}
.btn i { font-style: normal; }
.btn-ink { background: var(--ink); color: var(--bg); }
.btn-ink:hover { background: var(--signal); border-color: var(--signal); color: var(--deep); }
.btn-line:hover { background: var(--ink); color: var(--bg); }

.mono-label, .sec-head, .hero-meta, .assembly-state, .assembly-tag, .motion-button, .idx, .body-mono, .footnote, .col-title, .links, .footer {
  font-family: var(--mono);
}

/* hero */
.hero {
  position: relative; height: max(760px, 100svh); max-height: 1080px; overflow: hidden; padding: 64px var(--gutter) 0;
  --hero-ink: #f2f3f4; --hero-muted: #aeb6c2; --hero-soft: rgba(242, 243, 244, .2);
  color: var(--hero-ink);
  /* same light-field as the WebGL background, for first paint and no-WebGL */
  background:
    radial-gradient(42% 60% at 28% 72%, rgba(0, 230, 75, .45), transparent 70%),
    radial-gradient(46% 64% at 72% 35%, rgba(41, 141, 255, .55), transparent 70%),
    radial-gradient(34% 44% at 55% 80%, rgba(106, 195, 241, .35), transparent 70%),
    radial-gradient(40% 50% at 15% 20%, rgba(12, 60, 140, .6), transparent 70%),
    #05070b;
}
.hero-word {
  position: absolute; z-index: 3; margin: 0; pointer-events: none;
  font-family: var(--display); font-stretch: 125%; font-weight: 900; line-height: .8; letter-spacing: -.035em;
  font-size: clamp(64px, 13vw, 230px); white-space: nowrap;
}
.hero-word-top { top: calc(64px + 3vh); left: var(--gutter); }
.hero-word-bottom { bottom: 2.4vh; right: var(--gutter); font-size: clamp(48px, 11.4vw, 202px); }
.assembly-stage { position: absolute; z-index: 1; inset: 0; touch-action: pan-y; cursor: grab; }
.assembly-stage:active { cursor: grabbing; }
#assembly-canvas {
  position: absolute; inset: 0; width: 100%; height: 100%; display: block;
}
.assembly-fallback { display: none; position: absolute; left: 30%; top: 24%; width: 40%; height: 52%; grid-template-columns: repeat(3, 1fr); gap: 6px; transform: perspective(700px) rotateY(-24deg) rotateX(-12deg); }
.no-webgl .assembly-fallback { display: grid; }
.assembly-fallback span { border: 1px solid #fff9; border-radius: 0; background: linear-gradient(135deg, #ffffff66, #ffffff1f); box-shadow: inset 0 0 18px #fff6, 0 18px 30px #0e0e0e1a; -webkit-backdrop-filter: blur(3px); backdrop-filter: blur(3px); }
.assembly-fallback span:nth-child(3), .assembly-fallback span:nth-child(8), .assembly-fallback span:nth-child(10) { background: linear-gradient(135deg, #7dffa6, var(--signal)); }

.hero-info { position: absolute; z-index: 4; left: var(--gutter); top: 50%; transform: translateY(-38%); width: min(400px, 32vw); }
.mono-label { font-size: 11px; letter-spacing: .1em; margin: 0 0 12px; text-transform: uppercase; }
.hero-meta { margin: 0 0 22px; font-size: 11px; letter-spacing: .08em; }
.hero-meta div { display: flex; gap: 14px; padding: 5px 0; border-top: 1px solid var(--hero-soft); }
.hero-meta div:last-child { border-bottom: 1px solid var(--hero-soft); }
.hero-meta dt { width: 64px; color: var(--hero-muted); }
.hero-meta dd { margin: 0; }
.hero-meta #clock { margin-left: auto; font-variant-numeric: tabular-nums; }
.hero h1 { font-size: clamp(22px, 2.1vw, 32px); font-weight: 800; line-height: 1.3; letter-spacing: -.01em; margin: 0 0 16px; }
.hero-lead { font-size: 13px; line-height: 1.9; margin: 0 0 24px; color: var(--hero-muted); }
.hero .btn-ink { background: var(--hero-ink); color: #05070b; border-color: var(--hero-ink); }
.hero .btn-line { border-color: var(--hero-ink); }
.hero .btn-line:hover { background: var(--hero-ink); color: #05070b; }
.hero .btn-signal { background: var(--signal); border-color: var(--signal); color: var(--deep); }
.hero .btn-signal:hover { background: var(--hero-ink); border-color: var(--hero-ink); color: #05070b; }
.hero .btn-yellow { background: #ffd400; border-color: #ffd400; color: #05070b; }
.hero .btn-yellow:hover { background: var(--hero-ink); border-color: var(--hero-ink); color: #05070b; }
.hero-side .btn { margin-top: 14px; }

/* 仕組み解説（プロモ動画）: 全画面オーバーレイ */
.promo-overlay { position: fixed; inset: 0; z-index: 200; background: #000; display: none; }
.promo-overlay.is-open { display: block; }
.promo-overlay iframe { position: absolute; inset: 0; width: 100%; height: 100%; border: 0; display: block; }
.promo-close { position: absolute; right: 20px; top: 20px; z-index: 2; width: 48px; height: 48px; border: 1px solid #f2f3f4; background: rgba(5,7,11,.7); color: #f2f3f4; font: 700 22px/1 var(--display); display: grid; place-items: center; }
.promo-close:hover { background: #f2f3f4; color: #05070b; }
html.promo-open { overflow: hidden; }
.hero-actions { display: flex; flex-wrap: wrap; gap: 8px; }

.hero-side { position: absolute; z-index: 4; right: var(--gutter); top: 50%; transform: translateY(-50%); text-align: right; font-size: 11px; letter-spacing: .1em; }
.assembly-state { margin: 0 0 10px; padding-right: 12px; border-right: 2px solid var(--signal); transition: color .3s; }
.is-assembled .assembly-state, .hero:has(.is-assembled) .assembly-state { color: var(--signal); }
.assembly-tag { margin: 0 0 18px; display: flex; align-items: center; justify-content: flex-end; gap: 8px; }
.assembly-tag .sq { background: var(--signal); }
.motion-button { border: 1px solid var(--hero-ink); background: none; padding: 8px 12px; font-size: 11px; letter-spacing: .06em; color: var(--hero-ink); }
.motion-button:hover { background: var(--hero-ink); color: #05070b; }
.motion-button span { margin-left: 8px; }

/* ticker */
.ticker { background: var(--ink); color: var(--bg); overflow: hidden; padding: 14px 0; border-block: 1px solid var(--ink); }
.ticker-track { display: flex; width: max-content; animation: ticker 38s linear infinite; }
.ticker-track > div { display: flex; align-items: center; flex: none; }
.ticker span { font-family: var(--display); font-stretch: 125%; font-weight: 800; font-size: clamp(28px, 3.6vw, 56px); line-height: 1; letter-spacing: -.02em; white-space: nowrap; }
.ticker i { width: clamp(14px, 1.4vw, 22px); height: clamp(14px, 1.4vw, 22px); background: var(--signal); margin: 0 clamp(22px, 2.6vw, 42px); flex: none; }
@keyframes ticker { to { transform: translateX(-50%); } }

/* sections */
.section { padding: 110px 0 120px; }
.sec-head { display: flex; align-items: baseline; gap: 14px; margin: 0; padding-top: 12px; border-top: 1px solid var(--rule); font-size: 11px; letter-spacing: .1em; text-transform: uppercase; }
.sec-head .idx { color: var(--signal-ink); }
.sec-head-jp { margin-left: auto; font-family: var(--jp); letter-spacing: .06em; }
.giant {
  margin: 0 0 56px; padding-bottom: 18px; border-bottom: 1px solid var(--rule); text-align: center;
  font-family: var(--display); font-stretch: 125%; font-weight: 900; line-height: .82; letter-spacing: -.04em;
  font-size: clamp(64px, 12.4vw, 216px); white-space: nowrap; overflow: hidden;
}
.giant .ch { display: inline-block; }
.body-mono { font-size: 12px; line-height: 1.95; letter-spacing: .04em; margin: 0; }

/* 01 challenge */
.manifesto { margin: 56px 0 72px; font-size: clamp(40px, 6.4vw, 104px); font-weight: 800; line-height: 1.12; letter-spacing: -.03em; }
.manifesto .line { display: block; overflow: hidden; }
.manifesto .line > span { display: inline-block; }
.manifesto .line:nth-child(2) > span { background: linear-gradient(90deg, var(--signal-ink), #1fbf8a 45%, #3aa9e0); -webkit-background-clip: text; background-clip: text; color: transparent; }
.challenge-grid { display: grid; grid-template-columns: 1fr 1.25fr; gap: 64px; align-items: start; }
.lead { font-size: 19px; line-height: 1.8; font-weight: 700; margin: 0; }
.issues { list-style: none; margin: 0; padding: 0; border-top: 1px solid var(--rule); }
.issues li { display: flex; gap: 22px; align-items: baseline; padding: 18px 0; border-bottom: 1px solid var(--soft); font-size: 15px; font-weight: 700; }
.idx { font-size: 11px; letter-spacing: .06em; color: var(--signal-ink); font-weight: 500; }
.note { display: flex; align-items: center; gap: 12px; margin: 64px 0 0; font-size: 13px; color: var(--muted); }
.note .sq { background: var(--signal); }

/* pixel transitions: stepped cells of the previous colour */
.pixels { display: grid; grid-template-columns: repeat(20, 1fr); height: 10vw; background: var(--to); margin-top: -1px; }
.pixels i { background: var(--from); height: calc(var(--h) * 5vw); transition: height .9s steps(4, end); }
.js .pixels:not(.is-in) i { height: 10vw; }
.pixels i:nth-child(odd) { transition-delay: .08s; } .pixels i:nth-child(3n) { transition-delay: .16s; }

/* 02 service (signal orange) */
.service { background: linear-gradient(180deg, #0d3a1c 0%, #082313 38%, var(--deep) 100%); color: #eef1ee; --rule: rgba(238, 241, 238, .7); --soft: rgba(238, 241, 238, .18); }
.service .giant { color: var(--signal); }
.service h2 { color: #fff; }
.service .tags li { border-color: rgba(238, 241, 238, .55); }
.service .sec-head .idx, .service .idx { color: var(--signal); }
.service-intro { display: grid; grid-template-columns: 1fr 1.2fr 1fr; gap: 40px; align-items: end; margin-bottom: 56px; }
.service-intro .sec-head { grid-column: 1 / -1; }
.service-intro h2 { grid-column: 1 / 3; margin: 24px 0 0; font-size: clamp(36px, 4.6vw, 72px); font-weight: 800; line-height: 1.18; letter-spacing: -.02em; }
.service-list { list-style: none; margin: 0; padding: 0; border-top: 1px solid var(--rule); }
.service-list > li { display: grid; grid-template-columns: 90px 1fr minmax(300px, 440px); gap: 32px; padding: 30px 0 34px; border-bottom: 1px solid var(--rule); }
.service-list h3 { margin: 0; font-size: clamp(26px, 3vw, 44px); font-weight: 800; letter-spacing: -.02em; line-height: 1.15; }
.service-list h3 small { display: block; margin-top: 12px; font-family: var(--mono); font-size: 11px; font-weight: 500; letter-spacing: .12em; }
.service-list p { margin: 0 0 16px; font-size: 14px; line-height: 1.9; }
.tags { display: flex; flex-wrap: wrap; gap: 6px; margin: 0; padding: 0; list-style: none; }
.tags li { border: 1px solid var(--ink); padding: 5px 9px; font-size: 11px; font-weight: 700; }
.footnote { margin: 28px 0 0; max-width: 760px; font-size: 11px; line-height: 1.9; letter-spacing: .03em; }

/* framed boxes with square nodes at the corners */
.framed { position: relative; border: 1px solid var(--rule); }
.framed:before {
  content: ""; position: absolute; inset: -4px; pointer-events: none;
  background: linear-gradient(var(--ink), var(--ink)) left top / 7px 7px no-repeat,
              linear-gradient(var(--ink), var(--ink)) right top / 7px 7px no-repeat,
              linear-gradient(var(--ink), var(--ink)) left bottom / 7px 7px no-repeat,
              linear-gradient(var(--ink), var(--ink)) right bottom / 7px 7px no-repeat;
}

/* 03 direction */
.direction-frame { display: grid; grid-template-columns: .8fr 1.6fr 1fr; }
.direction-frame > div { padding: 24px; }
.direction-frame > div + div { border-left: 1px solid var(--rule); }
.direction-num { display: flex; flex-direction: column; justify-content: space-between; gap: 40px; }
.big-num { font-family: var(--display); font-stretch: 110%; font-weight: 500; font-size: clamp(64px, 6vw, 100px); line-height: .9; }
.direction-num .sec-head { border-top: 0; padding: 0; flex-wrap: wrap; }
.direction-art { display: flex; align-items: center; background: var(--paper); }
.direction-copy h2 { margin: 18px 0 20px; font-size: clamp(26px, 2.5vw, 40px); font-weight: 800; line-height: 1.2; letter-spacing: -.02em; }
.direction-copy p { font-size: 14px; line-height: 1.9; margin: 0; }
.direction-copy .detail { margin-top: 22px; padding-top: 16px; border-top: 1px solid var(--soft); font-size: 12px; color: var(--muted); }
.motion-study { width: 100%; display: grid; grid-template-columns: repeat(3, 1fr); border: 1px solid var(--rule); background: var(--bg); }
.motion-frame { margin: 0; position: relative; display: flex; flex-direction: column; }
.motion-frame + .motion-frame { border-left: 1px solid var(--rule); }
.motion-frame + .motion-frame:before { content: ""; position: absolute; left: -4px; top: calc(50% - 30px); width: 7px; height: 7px; background: var(--signal); z-index: 1; }
.motion-field { position: relative; aspect-ratio: 1; display: grid; grid-template-columns: repeat(4, 15%); grid-auto-rows: 15%; gap: 2%; place-content: center; overflow: hidden; }
.motion-field span { border: 1px solid var(--ink); border-radius: 0; background: linear-gradient(150deg, #ffffffb3, #ffffff40); transform: translate(calc(var(--x) * var(--k) * 100%), calc(var(--y) * var(--k) * 100%)) rotate(calc(var(--r) * var(--k) * 1deg)); }
.motion-field span.is-solid { background: var(--signal); }
.motion-frame figcaption { border-top: 1px solid var(--rule); padding: 10px 12px 12px; font-family: var(--mono); font-size: 10px; letter-spacing: .1em; }
.motion-frame figcaption b { font-weight: 500; color: var(--signal-ink); margin-right: 4px; }
.motion-frame figcaption span { display: block; margin-top: 4px; font-family: var(--jp); font-size: 11px; letter-spacing: .02em; color: var(--muted); }

/* 04 process (ink) */
.process { background: #16191d; color: var(--bg); }
.process .idx { color: var(--signal); }
.process .giant, .process .sec-head { border-color: #f2f3f455; }
.process-head { display: grid; grid-template-columns: 1fr 1fr; gap: 24px 64px; align-items: end; margin-bottom: 48px; }
.process-head .sec-head { grid-column: 1 / -1; }
.process-head h2 { margin: 24px 0 0; font-size: clamp(36px, 4.6vw, 72px); font-weight: 800; line-height: 1.18; letter-spacing: -.02em; }
.process-head .body-mono { color: #b9b9b6; }
.steps { list-style: none; margin: 0; padding: 0; border-top: 1px solid #f2f3f455; }
.steps li { position: relative; isolation: isolate; display: grid; grid-template-columns: 70px minmax(0, 1fr) minmax(240px, 360px) 36px; gap: 24px; align-items: center; padding: 26px 0; border-bottom: 1px solid #f2f3f455; }
.steps li:before { content: ""; position: absolute; inset: 0 calc(var(--gutter) * -1); z-index: -1; background: var(--signal); transform: scaleY(0); transform-origin: bottom; transition: transform .45s cubic-bezier(.7, 0, .2, 1); }
.steps li:hover { color: var(--ink); }
.steps li:hover:before { transform: scaleY(1); }
.steps li:hover .idx { color: var(--ink); }
.step-en { font-family: var(--display); font-stretch: 125%; font-weight: 900; font-size: clamp(40px, 6.4vw, 110px); line-height: .85; letter-spacing: -.035em; transition: transform .45s cubic-bezier(.7, 0, .2, 1); }
.steps li:hover .step-en { transform: translateX(16px); }
.steps h3 { margin: 0 0 6px; font-size: 20px; font-weight: 800; }
.steps p { margin: 0; font-size: 13px; line-height: 1.8; }
.step-mark { font-size: 22px; transition: transform .35s; }
.steps li:hover .step-mark { transform: rotate(45deg); }

/* closing (signal) */
.closing { background: linear-gradient(180deg, var(--sky) 0%, #9fd8f5 100%); padding-top: 90px; overflow: hidden; }
.closing .framed:before { background: linear-gradient(var(--ink), var(--ink)) left top / 7px 7px no-repeat, linear-gradient(var(--ink), var(--ink)) right top / 7px 7px no-repeat, linear-gradient(var(--ink), var(--ink)) left bottom / 7px 7px no-repeat, linear-gradient(var(--ink), var(--ink)) right bottom / 7px 7px no-repeat; }
.closing-frame { display: grid; grid-template-columns: 1.5fr 1fr 1fr; }
.closing-frame > div { padding: 32px 28px 36px; }
.closing-frame > div + div { border-left: 1px solid var(--rule); }
.closing-main h2 { margin: 0 0 22px; font-size: clamp(32px, 3.4vw, 52px); font-weight: 800; line-height: 1.2; letter-spacing: -.02em; }
.clients { display: flex; flex-wrap: wrap; gap: 6px 14px; margin: 22px 0 0; padding-top: 14px; border-top: 1px solid var(--soft); font-size: 13px; font-weight: 700; }
.clients span { font-family: var(--mono); font-size: 11px; font-weight: 500; letter-spacing: .1em; }
.closing-actions { display: flex; flex-wrap: wrap; gap: 8px; margin-top: 24px; }
.process .note { color: #b9b9b6; margin-top: 40px; }
.col-title { margin: 0 0 18px; font-family: var(--display); font-weight: 800; font-size: 18px; letter-spacing: -.01em; }
.checks { list-style: none; margin: 0; padding: 0; }
.checks li { display: flex; align-items: center; gap: 10px; padding: 9px 0; border-bottom: 1px solid var(--soft); font-size: 14px; font-weight: 700; }
.checks li:before { content: ""; width: 7px; height: 7px; background: var(--ink); flex: none; }
.links { list-style: none; margin: 0 0 26px; padding: 0; font-size: 12px; letter-spacing: .08em; }
.links li { padding: 6px 0; }
.wordmark {
  display: flex; align-items: center; gap: .18em; margin: 70px 0 0; padding: 0 var(--gutter); white-space: nowrap;
  font-family: var(--display); font-stretch: 125%; font-weight: 900; line-height: .8; letter-spacing: -.045em;
  font-size: clamp(34px, 8.3vw, 150px);
}
.wordmark .brand-mark { grid-template-columns: repeat(2, .28em); gap: .05em; }
.wordmark .brand-mark i { width: .28em; height: .28em; background: var(--ink); }
.wordmark .brand-mark i:nth-child(2), .wordmark .brand-mark i:nth-child(3) { background: #fff; }
.footer { display: flex; justify-content: space-between; gap: 16px; padding: 22px 0 26px; margin-top: 26px; border-top: 1px solid var(--rule); font-size: 10px; letter-spacing: .1em; }

/* reveal */
.js [data-reveal] { transition: opacity .9s ease, transform .9s cubic-bezier(.2, .7, .1, 1); }
.js [data-reveal]:not(.is-in) { opacity: 0; transform: translateY(24px); }
.js .manifesto .line > span { transition: transform 1s cubic-bezier(.2, .7, .1, 1); }
.js .manifesto:not(.is-in) .line > span { transform: translateY(105%); }
.manifesto .line:nth-child(2) > span { transition-delay: .08s; } .manifesto .line:nth-child(3) > span { transition-delay: .16s; }
.js .giant .ch { transition: transform .8s cubic-bezier(.2, .7, .1, 1); transition-delay: calc(var(--i) * 40ms); }
.js .giant:not(.is-in) .ch { transform: translateY(110%); }

/* ---------- tablet ---------- */
@media (max-width: 1080px) {
  .site-header nav { gap: 18px; }
  .hero-info { width: 330px; }
  .service-intro { grid-template-columns: 1fr 1fr; }
  .service-intro .body-mono { grid-column: 1 / -1; max-width: 560px; }
  .service-list > li { grid-template-columns: 60px 1fr; }
  .service-list > li > div { grid-column: 2; }
  .direction-frame { grid-template-columns: 1fr 1fr; }
  .direction-art { grid-column: 1 / -1; order: 3; border-left: 0 !important; border-top: 1px solid var(--rule); }
  .steps li { grid-template-columns: 50px minmax(0, 1fr) minmax(220px, 300px) 28px; }
}
@media (max-width: 860px) {
  .site-header nav { display: none; }
  .site-header { grid-template-columns: 1fr auto; }
  .hero { height: auto; max-height: none; padding-bottom: 32px; display: flex; flex-direction: column; }
  .hero-word, .assembly-stage, .hero-info, .hero-side { position: relative; inset: auto; transform: none; }
  .hero-word { font-size: 13.4vw; }
  .hero-word-bottom { font-size: 11vw; }
  .hero-word-top { margin-top: 28px; }
  .hero-word-bottom { align-self: flex-end; margin-top: 6px; }
  #assembly-canvas { -webkit-mask-image: linear-gradient(transparent, #000 18%, #000 82%, transparent); mask-image: linear-gradient(transparent, #000 18%, #000 82%, transparent); }
  .assembly-stage { width: calc(100% + var(--gutter) * 2); margin: -8vw calc(var(--gutter) * -1) 0; height: 96vw; max-height: 620px; left: auto; top: auto; }
  .hero-side { order: 3; display: flex; flex-wrap: wrap; align-items: center; justify-content: space-between; gap: 10px; text-align: left; margin: -36px 0 18px; }
  .hero-side p { margin: 0; }
  .assembly-state { border-right: 0; border-left: 2px solid var(--signal); padding: 0 0 0 10px; }
  .hero-word-bottom { order: 4; }
  .hero-info { order: 5; width: 100%; margin-top: 28px; }
  .challenge-grid, .process-head, .closing-frame { grid-template-columns: 1fr; }
  .closing-frame > div + div { border-left: 0; border-top: 1px solid var(--rule); }
  .steps li { grid-template-columns: 44px 1fr 22px; gap: 6px 12px; padding: 22px 0; }
  .steps li > div { grid-column: 2 / 4; }
  .step-mark { grid-column: 3; grid-row: 1; }
}

/* ---------- phone ---------- */
@media (max-width: 600px) {
  :root { --gutter: 16px; }
  .site-header { height: 56px; font-size: 11px; }
  .hero { padding-top: 56px; }
  .header-cta { padding: 7px 10px; }
  .desktop-break { display: none; }
  .section { padding: 72px 0 80px; }
  .giant { font-size: 12vw; margin-bottom: 36px; padding-bottom: 12px; }
  .manifesto { font-size: clamp(28px, 8.2vw, 44px); margin: 36px 0 44px; }
  .lead { font-size: 16px; }
  .issues li { font-size: 13px; gap: 14px; padding: 15px 0; }
  .service-intro { grid-template-columns: 1fr; gap: 20px; margin-bottom: 36px; }
  .service-intro h2 { grid-column: auto; font-size: clamp(28px, 8vw, 40px); }
  .service-list > li { grid-template-columns: 1fr; gap: 14px; padding: 24px 0 26px; }
  .service-list > li > div { grid-column: auto; }
  .direction-frame { grid-template-columns: 1fr; }
  .direction-frame > div { padding: 18px 16px; }
  .direction-frame > div + div { border-left: 0; border-top: 1px solid var(--rule); }
  .direction-art { order: 0; }
  .motion-frame figcaption { padding: 8px 6px 10px; font-size: 8px; letter-spacing: .06em; }
  .motion-frame figcaption span { font-size: 9px; }
  .process-head h2, .direction-copy h2 { font-size: clamp(28px, 8vw, 40px); }
  .step-en { font-size: clamp(28px, 8.4vw, 60px); }
  .closing { padding-top: 64px; }
  .closing-frame > div { padding: 24px 18px 26px; }
  .wordmark { font-size: 8.1vw; margin-top: 48px; }
  .footer { flex-direction: column; gap: 6px; font-size: 9px; }
  .frame-marks .tc, .frame-marks .bc { display: none; }
}

@media (prefers-reduced-motion: reduce) {
  html { scroll-behavior: auto; }
  .ticker-track { animation: none; }
  .js [data-reveal]:not(.is-in), .js .manifesto:not(.is-in) .line > span, .js .giant:not(.is-in) .ch { opacity: 1; transform: none; }
  .js .pixels:not(.is-in) i { height: calc(var(--h) * 5vw); }
}