:root {
  --bg: #eef0f5;
  --ink: #0b0b0f;
  --ink-2: #2a2b33;
  --muted: #6c6f7b;
  --line: rgba(11, 11, 15, .12);
  --card: #ffffff;
  --blue: #1a2ffb;
  --blue-2: #0f1fd6;
  --dark: #0b0b0f;
  --r: 22px;
  --pad: clamp(16px, 3.2vw, 48px);
  --ease: cubic-bezier(.22, 1, .36, 1);
  --font: "Inter Tight", "Noto Sans SC", "PingFang SC", "Microsoft YaHei", system-ui, sans-serif;
}
*, *::before, *::after { box-sizing: border-box; }
html { -webkit-text-size-adjust: 100%; }
html.lenis, html.lenis body { height: auto; }
.lenis.lenis-smooth { scroll-behavior: auto !important; }
body {
  margin: 0; background: var(--bg); color: var(--ink);
  font-family: var(--font); font-size: 16px; line-height: 1.6;
  -webkit-font-smoothing: antialiased; overflow-x: hidden;
}
body.is-loading { overflow: hidden; }
img { display: block; max-width: 100%; }
a { color: inherit; text-decoration: none; }
button { font: inherit; color: inherit; background: none; border: 0; cursor: pointer; padding: 0; }
h1, h2, h3, h4 { margin: 0; font-weight: 600; letter-spacing: -.02em; line-height: 1.05; }
p { margin: 0; }
::selection { background: var(--blue); color: #fff; }

/* ---------- rolling letters ---------- */
.roll { display: inline-flex; overflow: hidden; vertical-align: top; line-height: 1.15; }
.roll__c { display: inline-block; position: relative; transition: transform .55s var(--ease); white-space: pre; }
.roll__c::after { content: attr(data-c); position: absolute; left: 0; top: 100%; }
:is(a, button, li, .pill):hover > .roll .roll__c,
:is(a, button, li, .pill):hover > span > .roll .roll__c,
.roll-host:hover .roll .roll__c { transform: translateY(-100%); }

/* ---------- loader ---------- */
.loader {
  position: fixed; inset: 0; z-index: 100; background: var(--bg);
  display: grid; place-items: center; transition: clip-path 1s var(--ease) .1s;
  clip-path: inset(0 0 0 0);
}
.loader.is-done { clip-path: inset(0 0 100% 0); pointer-events: none; }
.loader__eyes { display: flex; gap: 14px; }
.eye { width: 64px; height: 64px; border-radius: 50%; border: 7px solid var(--ink); position: relative; animation: blink 2.4s infinite; }
.eye i { position: absolute; width: 24px; height: 24px; border-radius: 50%; background: var(--ink); left: 50%; top: 50%; transform: translate(-30%, -50%); animation: look 2.4s infinite var(--ease); }
@keyframes blink { 0%, 44%, 52%, 100% { transform: scaleY(1); } 48% { transform: scaleY(.1); } }
@keyframes look { 0%, 30% { transform: translate(-30%, -50%); } 60%, 90% { transform: translate(-80%, -60%); } }
.loader__count { position: absolute; left: var(--pad); bottom: var(--pad); font-size: clamp(56px, 10vw, 140px); font-weight: 600; letter-spacing: -.05em; line-height: .9; }

/* ---------- cursor ---------- */
.cursor {
  position: fixed; left: 0; top: 0; z-index: 90; pointer-events: none;
  width: 12px; height: 12px; margin: -6px 0 0 -6px; border-radius: 50%;
  background: var(--ink); transition: width .35s var(--ease), height .35s var(--ease), margin .35s var(--ease), background .3s;
  display: grid; place-items: center; mix-blend-mode: normal;
}
.cursor.is-hover { width: 44px; height: 44px; margin: -22px 0 0 -22px; background: rgba(26, 47, 251, .14); }
.cursor.is-view { width: 96px; height: 96px; margin: -48px 0 0 -48px; background: var(--blue); }
.cursor__label { color: #fff; font-size: 12px; font-weight: 600; letter-spacing: .08em; opacity: 0; transition: opacity .2s; }
.cursor.is-view .cursor__label { opacity: 1; }
@media (hover: none) { .cursor { display: none; } }

/* ---------- nav ---------- */
.nav {
  position: fixed; top: 0; left: 0; right: 0; z-index: 50;
  display: flex; align-items: center; justify-content: space-between;
  padding: 22px var(--pad); transition: transform .6s var(--ease);
}
.nav.is-hidden { transform: translateY(-110%); }
.nav__logo { font-weight: 700; font-size: 15px; letter-spacing: .04em; background: rgba(255, 255, 255, .7); backdrop-filter: blur(12px); -webkit-backdrop-filter: blur(12px); padding: 13px 18px; border-radius: 999px; }
.nav__links { display: flex; gap: 6px; background: rgba(255, 255, 255, .7); backdrop-filter: blur(12px); -webkit-backdrop-filter: blur(12px); padding: 6px; border-radius: 999px; }
.nav__links a { padding: 8px 16px; border-radius: 999px; font-size: 14px; font-weight: 500; transition: background .3s; }
.nav__links a:hover { background: var(--bg); }
.nav__right { display: flex; align-items: center; gap: 10px; }
.pill {
  display: inline-flex; align-items: center; gap: 12px; height: 48px; padding: 0 8px 0 22px;
  border-radius: 999px; font-size: 14px; font-weight: 600; letter-spacing: .02em; transition: background .3s, color .3s;
}
.pill__dot { width: 32px; height: 32px; border-radius: 50%; display: grid; place-items: center; position: relative; transition: transform .5s var(--ease); }
.pill__dot::before { content: ""; width: 6px; height: 6px; border-radius: 50%; background: currentColor; transition: transform .5s var(--ease); }
.pill:hover .pill__dot::before { transform: scale(5.2); }
.pill--blue { background: var(--blue); color: #fff; }
.pill--blue .pill__dot { color: #fff; }
.pill--blue:hover { background: var(--ink); }
.pill--dark { background: var(--ink); color: #fff; }
.pill--dark:hover { background: var(--blue); }
.menu-btn { width: 48px; height: 48px; border-radius: 50%; background: #fff; display: grid; place-content: center; gap: 0; grid-auto-flow: column; column-gap: 4px; }
.menu-btn i { width: 6px; height: 6px; border-radius: 50%; background: var(--ink); transition: transform .4s var(--ease); }
.menu-btn:hover i:first-child { transform: translateX(-2px); }
.menu-btn:hover i:last-child { transform: translateX(2px); }
.menu-open .menu-btn i:first-child { transform: translateX(5px); }
.menu-open .menu-btn i:last-child { transform: translateX(-5px); }
.menu {
  position: fixed; top: 84px; right: var(--pad); z-index: 49; width: min(380px, calc(100vw - 32px));
  background: #fff; border-radius: var(--r); padding: 18px; box-shadow: 0 30px 60px -20px rgba(0, 0, 0, .2);
  transform-origin: top right; transform: scale(.85); opacity: 0; pointer-events: none; transition: transform .5s var(--ease), opacity .3s;
}
.menu-open .menu { transform: none; opacity: 1; pointer-events: auto; }
.menu__inner { display: grid; }
.menu__inner a { font-size: 26px; font-weight: 600; padding: 10px 14px; border-radius: 14px; letter-spacing: -.02em; }
.menu__inner a:hover { background: var(--bg); }

/* ---------- hero ---------- */
.hero { position: relative; height: 100vh; min-height: 620px; overflow: hidden; }
.hero__canvas { position: absolute; inset: 0; width: 100%; height: 100%; cursor: crosshair; }
.no-webgl .hero__canvas { background: radial-gradient(circle at 60% 45%, #fff 0, #fff 9%, var(--blue) 9.2%, var(--blue) 13%, var(--ink) 13.2%, var(--ink) 16%, transparent 16.2%), var(--bg); }
.hero__copy { position: absolute; left: var(--pad); bottom: calc(var(--pad) + 56px); max-width: 860px; pointer-events: none; }
.hero__lead { font-size: clamp(22px, 2.4vw, 36px); line-height: 1.3; font-weight: 500; letter-spacing: -.02em; }
.hero__meta { position: absolute; right: var(--pad); bottom: calc(var(--pad) + 60px); display: grid; text-align: right; font-size: 13px; color: var(--muted); letter-spacing: .06em; pointer-events: none; }
.hero__meta span:first-child { color: var(--ink); font-weight: 600; }
.hero__scroll { position: absolute; left: var(--pad); right: var(--pad); bottom: 22px; display: flex; justify-content: space-between; font-size: 12px; letter-spacing: .14em; font-weight: 600; }
.hero__scroll .plus { font-size: 18px; line-height: 1; }

/* ---------- section heads ---------- */
.sec-head { padding: 0 var(--pad); display: grid; grid-template-columns: 1fr minmax(240px, 420px); gap: 24px; align-items: end; margin-bottom: clamp(32px, 5vw, 72px); }
.sec-head__title { font-size: clamp(56px, 10vw, 168px); font-weight: 700; letter-spacing: -.05em; line-height: .92; }
.sec-head__sub { font-size: 13px; letter-spacing: .04em; color: var(--muted); line-height: 1.7; }
.sec-head--light .sec-head__title { color: #fff; }
.sec-head--light .sec-head__sub { color: rgba(255, 255, 255, .6); }
.dot { display: inline-block; width: 10px; height: 10px; border-radius: 50%; background: var(--ink); margin-right: 10px; vertical-align: 1px; }
.dot--blue { background: var(--blue); }

/* ---------- intro ---------- */
.intro { padding: clamp(100px, 16vw, 220px) var(--pad) clamp(60px, 8vw, 120px); display: grid; grid-template-columns: repeat(12, 1fr); gap: 24px; }
.intro__eyebrow { grid-column: 1 / -1; font-size: 13px; font-weight: 600; letter-spacing: .08em; }
.intro__title { grid-column: 1 / 10; font-size: clamp(48px, 8.2vw, 136px); font-weight: 700; letter-spacing: -.045em; line-height: 1; }
.intro__title span { display: block; }
.intro__body { grid-column: 7 / 13; display: grid; gap: 32px; justify-items: start; margin-top: 24px; }
.intro__body p { font-size: clamp(18px, 1.7vw, 24px); line-height: 1.6; font-weight: 500; }
.word-reveal .w { opacity: .14; transition: opacity .25s; }
.word-reveal .w.on { opacity: 1; }

/* ---------- reel ---------- */
.reel { height: 220vh; position: relative; }
.reel__sticky { position: sticky; top: 0; height: 100vh; display: grid; align-content: center; overflow: hidden; }
.reel__frame {
  --p: 0; position: relative; margin: 0 auto; width: calc(100% - 2 * var(--pad)); aspect-ratio: 16 / 9; max-height: 82vh;
  border-radius: var(--r); overflow: hidden; background: var(--ink);
  transform: scale(calc(.42 + var(--p) * .58)) translateY(calc((1 - var(--p)) * -6vh));
  transform-origin: 50% 40%; will-change: transform;
}
.reel__slides { position: absolute; inset: 0; }
.reel__slides img { position: absolute; inset: 0; width: 100%; height: 100%; object-fit: cover; opacity: 0; transform: scale(1.08); transition: opacity 1.2s ease, transform 6s linear; }
.reel__slides img.on { opacity: 1; transform: scale(1); }
.reel__play { position: absolute; left: 50%; top: 50%; width: 132px; height: 84px; margin: -42px 0 0 -66px; border-radius: 999px; background: #fff; display: grid; place-items: center; transition: transform .5s var(--ease), background .3s; }
.reel__play svg { width: 26px; fill: var(--ink); }
.reel__play:hover { transform: scale(1.12); background: var(--blue); }
.reel__play:hover svg { fill: #fff; }
.reel__caption { position: absolute; left: 22px; bottom: 18px; color: #fff; font-size: 13px; letter-spacing: .06em; font-weight: 600; text-shadow: 0 1px 12px rgba(0, 0, 0, .4); }
.reel__ticker { margin-top: 20px; overflow: hidden; font-size: 15px; font-weight: 600; letter-spacing: .06em; }
.ticker__track { display: flex; gap: 80px; width: max-content; animation: tick 22s linear infinite; }
@keyframes tick { to { transform: translateX(-50%); } }

/* ---------- work ---------- */
.work { padding: clamp(80px, 10vw, 160px) 0 clamp(60px, 8vw, 120px); }
.work__grid { padding: 0 var(--pad); display: grid; grid-template-columns: repeat(12, 1fr); gap: clamp(16px, 2vw, 28px); row-gap: clamp(40px, 5vw, 72px); }
.card { grid-column: span 6; display: grid; gap: 16px; cursor: pointer; }
.card:nth-child(4n+1) { grid-column: 1 / span 7; }
.card:nth-child(4n+2) { grid-column: 8 / span 5; margin-top: 18vh; }
.card:nth-child(4n+3) { grid-column: 1 / span 5; }
.card:nth-child(4n+4) { grid-column: 6 / span 7; margin-top: 10vh; }
.card__media { position: relative; border-radius: var(--r); overflow: hidden; background: #dfe2ea; aspect-ratio: 4 / 3; transform: translateZ(0); }
.card--tall .card__media { aspect-ratio: 4 / 5; }
.card--square .card__media { aspect-ratio: 1; }
.card__media img { width: 100%; height: 115%; object-fit: cover; transform: translateY(var(--py, 0)) scale(1.02); transition: transform 1.1s var(--ease), filter .6s; will-change: transform; }
.card:hover .card__media img { transform: translateY(var(--py, 0)) scale(1.07); }
.card__media::after { content: ""; position: absolute; inset: 0; background: linear-gradient(180deg, transparent 60%, rgba(0, 0, 0, .35)); opacity: 0; transition: opacity .5s; }
.card:hover .card__media::after { opacity: 1; }
.card__tags { position: absolute; left: 16px; top: 16px; display: flex; gap: 6px; flex-wrap: wrap; z-index: 1; }
.card__tags span { background: rgba(255, 255, 255, .92); color: var(--ink); font-size: 12px; font-weight: 600; padding: 6px 12px; border-radius: 999px; transform: translateY(-140%); opacity: 0; transition: transform .6s var(--ease), opacity .4s; }
.card:hover .card__tags span { transform: none; opacity: 1; }
.card:hover .card__tags span:nth-child(2) { transition-delay: .05s; }
.card:hover .card__tags span:nth-child(3) { transition-delay: .1s; }
.card__row { display: flex; justify-content: space-between; align-items: baseline; gap: 16px; }
.card__title { font-size: clamp(22px, 2.3vw, 34px); font-weight: 600; letter-spacing: -.03em; }
.card__en { font-size: 13px; color: var(--muted); letter-spacing: .04em; margin-top: 6px; }
.card__no { font-size: 13px; font-weight: 600; color: var(--muted); white-space: nowrap; }
.card .reveal-img { clip-path: inset(18% 0 0 0 round var(--r)); transition: clip-path 1.2s var(--ease); }
.card.in .reveal-img { clip-path: inset(0 0 0 0 round var(--r)); }

/* ---------- process ---------- */
.process { height: 420vh; position: relative; background: var(--card); }
.process__sticky { position: sticky; top: 0; height: 100vh; display: grid; grid-template-columns: minmax(300px, 4fr) 8fr; gap: clamp(20px, 3vw, 48px); padding: 96px var(--pad) var(--pad); }
.process__side { display: flex; flex-direction: column; justify-content: center; gap: 28px; }
.process__eyebrow { font-size: 12px; font-weight: 600; letter-spacing: .12em; }
.process__title { white-space: nowrap; font-size: clamp(38px, 4.3vw, 72px); font-weight: 700; letter-spacing: -.045em; }
.process__steps { list-style: none; margin: 0; padding: 0; display: grid; gap: 4px; }
.process__steps li { display: grid; grid-template-columns: 36px 1fr; gap: 10px; padding: 14px 16px; border-radius: 16px; opacity: .35; transition: opacity .4s, background .4s; }
.process__steps li.on { opacity: 1; background: var(--bg); }
.process__steps b { font-size: 13px; color: var(--blue); padding-top: 3px; }
.process__steps h3 { font-size: 20px; margin-bottom: 4px; }
.process__steps p { font-size: 14px; color: var(--muted); line-height: 1.55; }
.process__bar { height: 3px; background: var(--line); border-radius: 3px; overflow: hidden; }
.process__bar i { display: block; height: 100%; width: 0; background: var(--blue); }
.process__stage { position: relative; border-radius: var(--r); overflow: hidden; background: #fff; align-self: stretch; }
.pstage__layer { position: absolute; inset: 0; will-change: clip-path; }
.pstage__layer img { width: 100%; height: 100%; object-fit: cover; }
.pstage__line { background: #fff; }
.pstage__line img { filter: url(#lineart) contrast(1.4); }
.pstage__grid { position: absolute; inset: 0; background-image: linear-gradient(rgba(26, 47, 251, .08) 1px, transparent 1px), linear-gradient(90deg, rgba(26, 47, 251, .08) 1px, transparent 1px); background-size: 40px 40px; mix-blend-mode: multiply; }
.pstage__clay img { filter: grayscale(1) contrast(1.08) brightness(1.12); }
.pstage__mat img { filter: saturate(.45) contrast(1.05) brightness(1.03) hue-rotate(-8deg); }
.pstage__scan { position: absolute; top: 0; bottom: 0; width: 2px; left: 0; background: var(--blue); box-shadow: 0 0 24px 4px rgba(26, 47, 251, .45); opacity: 0; pointer-events: none; }
.pstage__scan::after { content: "AI"; position: absolute; top: 18px; left: 8px; font-size: 11px; font-weight: 700; color: #fff; background: var(--blue); padding: 3px 7px; border-radius: 999px; letter-spacing: .1em; }
.pstage__callouts { position: absolute; inset: 0; width: 100%; height: 100%; pointer-events: none; }
.co circle { fill: var(--blue); stroke: #fff; stroke-width: 4; transform-box: fill-box; transform-origin: center; transform: scale(0); transition: transform .5s var(--ease) var(--d); }
.co path { fill: none; stroke: var(--ink); stroke-width: 2.5; stroke-dasharray: 520; stroke-dashoffset: 520; transition: stroke-dashoffset 1s var(--ease) calc(var(--d) + .15s); }
.co text { font-family: var(--font); font-size: 30px; font-weight: 700; fill: var(--ink); opacity: 0; transition: opacity .5s calc(var(--d) + .5s); paint-order: stroke; stroke: rgba(255, 255, 255, .85); stroke-width: 8px; }
.process.show-callouts .co circle { transform: scale(1); }
.process.show-callouts .co path { stroke-dashoffset: 0; }
.process.show-callouts .co text { opacity: 1; }
.pstage__tag { position: absolute; left: 18px; bottom: 18px; background: var(--ink); color: #fff; font-size: 13px; font-weight: 600; padding: 8px 14px; border-radius: 999px; letter-spacing: .04em; }

/* ---------- lab ---------- */
.lab { background: var(--dark); color: #fff; padding: clamp(90px, 10vw, 160px) 0; border-radius: var(--r) var(--r) 0 0; margin-top: calc(-1 * var(--r)); position: relative; }
.lab__grid { padding: 0 var(--pad); display: grid; grid-template-columns: repeat(3, 1fr); gap: clamp(14px, 1.6vw, 24px); }
.lab__card { display: grid; gap: 16px; }
.lab__media { position: relative; aspect-ratio: 4 / 5; border-radius: var(--r); overflow: hidden; background: #16161c; transform-style: preserve-3d; transition: transform .6s var(--ease); }
.lab__media img { width: 100%; height: 100%; object-fit: cover; transform: scale(1.06); transition: transform 1s var(--ease); }
.lab__card:hover .lab__media img { transform: scale(1.12); }
.lab__media canvas { position: absolute; inset: 0; width: 100%; height: 100%; pointer-events: none; }
.lab__light { position: absolute; inset: 0; pointer-events: none; mix-blend-mode: soft-light; background: radial-gradient(circle at var(--lx, 50%) var(--ly, 40%), rgba(255, 255, 255, .95), rgba(255, 255, 255, 0) 32%), linear-gradient(rgba(0, 0, 0, .25), rgba(0, 0, 0, .25)); }
.lab__info span { font-size: 12px; color: rgba(255, 255, 255, .5); font-weight: 600; }
.lab__info h3 { font-size: 22px; margin: 6px 0 6px; }
.lab__info p { font-size: 14px; color: rgba(255, 255, 255, .6); }

/* ---------- services ---------- */
.services { padding: clamp(90px, 11vw, 180px) 0; position: relative; }
.svc { list-style: none; margin: 0; padding: 0 var(--pad); }
.svc li { display: grid; grid-template-columns: 70px 1fr 1fr 40px; align-items: center; gap: 20px; padding: clamp(22px, 2.6vw, 36px) 8px; border-top: 1px solid var(--line); cursor: default; position: relative; transition: padding .5s var(--ease), color .3s; }
.svc li:last-child { border-bottom: 1px solid var(--line); }
.svc li::before { content: ""; position: absolute; inset: 0; background: var(--blue); transform: scaleY(0); transform-origin: bottom; transition: transform .5s var(--ease); z-index: -1; border-radius: 12px; }
.svc li:hover { color: #fff; padding-left: 28px; padding-right: 28px; }
.svc li:hover::before { transform: scaleY(1); }
.svc__n { font-size: 13px; font-weight: 600; opacity: .6; }
.svc h3 { font-size: clamp(30px, 4.4vw, 72px); font-weight: 700; letter-spacing: -.04em; }
.svc p { font-size: 15px; opacity: .7; }
.svc__arrow { font-size: 26px; transition: transform .5s var(--ease); }
.svc li:hover .svc__arrow { transform: rotate(-45deg); }
.svc__float { position: fixed; left: 0; top: 0; width: 280px; aspect-ratio: 4 / 3; border-radius: 16px; overflow: hidden; pointer-events: none; z-index: 30; opacity: 0; transform: translate(-50%, -50%) scale(.6); transition: opacity .3s, transform .5s var(--ease); }
.svc__float.on { opacity: 1; }
.svc__float img { width: 100%; height: 100%; object-fit: cover; }
@media (hover: none) { .svc__float { display: none; } }

/* ---------- about ---------- */
.about { padding: 0 var(--pad) clamp(100px, 12vw, 200px); display: grid; grid-template-columns: 1fr 1fr; gap: clamp(30px, 6vw, 100px); }
.about__eyebrow { font-size: 13px; font-weight: 600; letter-spacing: .08em; margin-bottom: 28px; }
.about__title { font-size: clamp(40px, 5.4vw, 88px); font-weight: 700; letter-spacing: -.045em; margin-bottom: 28px; }
.about__p { font-size: 17px; color: var(--ink-2); max-width: 560px; }
.about__tools { display: flex; flex-wrap: wrap; gap: 8px; margin: 28px 0 40px; }
.about__tools span { font-size: 13px; font-weight: 500; padding: 7px 14px; border-radius: 999px; background: #fff; }
.about__stats { display: grid; grid-template-columns: repeat(3, 1fr); gap: 16px; }
.about__stats b { display: block; font-size: clamp(48px, 5vw, 80px); font-weight: 700; letter-spacing: -.05em; line-height: 1; color: var(--blue); }
.about__stats span { font-size: 13px; color: var(--muted); }
.timeline { list-style: none; margin: 0; padding: 0; align-self: end; }
.timeline li { padding: 24px 0; border-top: 1px solid var(--line); display: grid; grid-template-columns: 170px 1fr; gap: 6px 20px; }
.timeline li:last-child { border-bottom: 1px solid var(--line); }
.timeline time { font-size: 13px; font-weight: 600; color: var(--muted); grid-row: span 2; padding-top: 4px; }
.timeline h3 { font-size: 20px; }
.timeline p { font-size: 14px; color: var(--muted); }

/* ---------- contact ---------- */
.contact { background: var(--blue); color: #fff; padding: clamp(80px, 10vw, 150px) var(--pad) 28px; border-radius: var(--r) var(--r) 0 0; }
.contact__eyebrow { font-size: 14px; font-weight: 600; letter-spacing: .1em; opacity: .8; }
.contact__big { display: grid; margin: 24px 0 clamp(60px, 8vw, 120px); font-size: clamp(64px, 13.5vw, 250px); font-weight: 700; letter-spacing: -.06em; line-height: .98; }
.contact__big .roll { line-height: 1.02; }
.contact__big:hover .roll__c { transform: translateY(-100%); }
.contact__grid { display: grid; grid-template-columns: repeat(3, 1fr); gap: 24px; padding-bottom: 60px; border-bottom: 1px solid rgba(255, 255, 255, .25); }
.contact__grid h4 { font-size: 12px; letter-spacing: .12em; opacity: .6; margin-bottom: 10px; font-weight: 600; }
.contact__grid a, .contact__grid button, .contact__grid p { font-size: 18px; font-weight: 500; }
.copy.copied::after { content: "  已复制"; font-size: 12px; opacity: .7; }
.contact__foot { display: flex; justify-content: space-between; gap: 16px; padding-top: 24px; font-size: 13px; opacity: .8; flex-wrap: wrap; }

/* ---------- case overlay ---------- */
.case { position: fixed; inset: 0; z-index: 70; background: var(--bg); transform: translateY(100%); transition: transform .9s var(--ease); visibility: hidden; }
.case.open { transform: none; visibility: visible; }
.case__bar { position: absolute; top: 0; left: 0; right: 0; display: flex; justify-content: space-between; align-items: center; padding: 22px var(--pad); z-index: 2; pointer-events: none; }
.case__bar > * { pointer-events: auto; }
.case__idx { font-size: 13px; font-weight: 600; background: #fff; padding: 10px 16px; border-radius: 999px; }
.case__close { width: 52px; height: 52px; border-radius: 50%; background: var(--ink); position: relative; transition: transform .5s var(--ease), background .3s; }
.case__close:hover { transform: rotate(90deg); background: var(--blue); }
.case__close i { position: absolute; left: 16px; right: 16px; top: 25px; height: 2px; background: #fff; transform: rotate(45deg); }
.case__close i + i { transform: rotate(-45deg); }
.case__scroll { height: 100%; overflow-y: auto; overscroll-behavior: contain; }
.case__head { padding: 120px var(--pad) 48px; display: grid; grid-template-columns: 7fr 5fr; gap: 20px 48px; align-items: end; }
.case__tags { grid-column: 1 / -1; display: flex; gap: 8px; flex-wrap: wrap; }
.case__tags span { font-size: 12px; font-weight: 600; padding: 6px 12px; border-radius: 999px; background: #fff; }
.case__title { font-size: clamp(44px, 7vw, 120px); font-weight: 700; letter-spacing: -.05em; grid-column: 1; }
.case__en { grid-column: 1; color: var(--muted); font-size: 15px; letter-spacing: .04em; }
.case__meta { grid-column: 2; grid-row: 2 / span 2; display: grid; grid-template-columns: 1fr 1fr; gap: 16px; }
.case__meta div span { display: block; font-size: 12px; color: var(--muted); letter-spacing: .08em; }
.case__meta div b { font-size: 16px; font-weight: 600; }
.case__desc { grid-column: 1 / -1; font-size: clamp(18px, 1.6vw, 24px); line-height: 1.6; font-weight: 500; max-width: 980px; margin-top: 16px; }
.case__gallery { padding: 0 var(--pad); display: grid; grid-template-columns: 1fr 1fr; gap: clamp(12px, 1.4vw, 20px); }
.case__gallery figure { margin: 0; border-radius: var(--r); overflow: hidden; background: #dfe2ea; opacity: 0; transform: translateY(40px); transition: opacity .8s, transform 1s var(--ease); }
.case__gallery figure.in { opacity: 1; transform: none; }
.case__gallery figure.full { grid-column: 1 / -1; }
.case__gallery img { width: 100%; height: auto; max-height: 88vh; object-fit: contain; }
.case__next { display: grid; justify-items: start; gap: 8px; width: calc(100% - 2 * var(--pad)); margin: clamp(60px, 8vw, 120px) var(--pad) var(--pad); padding: clamp(36px, 5vw, 72px); border-radius: var(--r); background: var(--ink); color: #fff; text-align: left; transition: background .4s; }
.case__next:hover { background: var(--blue); }
.case__next span { font-size: 13px; letter-spacing: .1em; opacity: .7; }
.case__next strong { font-size: clamp(36px, 5vw, 80px); letter-spacing: -.04em; line-height: 1.05; }

/* ---------- lightbox reel ---------- */
.lightbox { position: fixed; inset: 0; z-index: 80; background: #000; opacity: 0; visibility: hidden; transition: opacity .5s, visibility .5s; }
.lightbox.open { opacity: 1; visibility: visible; }
.lightbox__stage { position: absolute; inset: 0; }
.lightbox__stage img { position: absolute; inset: 0; width: 100%; height: 100%; object-fit: contain; opacity: 0; transform: scale(1.04); transition: opacity 1s, transform 5s linear; }
.lightbox__stage img.on { opacity: 1; transform: scale(1); }
.lightbox__close { position: absolute; top: 22px; right: var(--pad); z-index: 2; background: #fff; }
.lightbox__close i { background: var(--ink); }
.lightbox__bar { position: absolute; left: var(--pad); right: var(--pad); bottom: 24px; height: 3px; background: rgba(255, 255, 255, .2); }
.lightbox__bar i { display: block; height: 100%; width: 0; background: #fff; }

/* ---------- reveal ---------- */
.reveal-lines { clip-path: inset(0 0 100% 0); transform: translateY(30px); transition: clip-path 1.2s var(--ease), transform 1.2s var(--ease); }
.ready .reveal-lines { clip-path: inset(0 0 0 0); transform: none; }
.fade-up { opacity: 0; transform: translateY(50px); transition: opacity .9s, transform 1.1s var(--ease); }
.fade-up.in { opacity: 1; transform: none; }

/* ---------- responsive ---------- */
@media (max-width: 1024px) {
  .nav__links { display: none; }
  .process__sticky { grid-template-columns: 1fr; grid-template-rows: auto 1fr; padding-top: 84px; }
  .process__side { gap: 14px; }
  .process__steps li { display: none; }
  .process__steps li.on { display: grid; }
  .lab__grid { grid-template-columns: 1fr 1fr; }
  .lab__card:last-child { grid-column: 1 / -1; }
  .lab__card:last-child .lab__media { aspect-ratio: 16 / 9; }
}
@media (max-width: 760px) {
  .pill { height: 42px; padding-left: 16px; font-size: 13px; }
  .nav { padding-top: 16px; }
  .nav__logo { font-size: 15px; }
  .menu-btn { width: 42px; height: 42px; }
  .hero__meta { display: none; }
  .hero__copy { bottom: 80px; }
  .sec-head { grid-template-columns: 1fr; }
  .intro { grid-template-columns: 1fr; }
  .intro__title, .intro__body { grid-column: 1; }
  .reel { height: 160vh; }
  .work__grid { grid-template-columns: 1fr; }
  .card, .card:nth-child(n) { grid-column: 1 !important; margin-top: 0 !important; }
  .lab__grid { grid-template-columns: 1fr; }
  .lab__card:last-child .lab__media { aspect-ratio: 4 / 5; }
  .svc li { grid-template-columns: 40px 1fr 28px; }
  .svc p { display: none; }
  .about { grid-template-columns: 1fr; }
  .timeline li { grid-template-columns: 1fr; }
  .timeline time { grid-row: auto; }
  .contact__grid { grid-template-columns: 1fr 1fr; }
  .case__head { grid-template-columns: 1fr; }
  .case__meta { grid-column: 1; grid-row: auto; }
  .case__gallery { grid-template-columns: 1fr; }
}
@media (prefers-reduced-motion: reduce) {
  *, *::before, *::after { animation-duration: .01ms !important; transition-duration: .01ms !important; }
}
.card:hover .card__title .roll__c { transform: translateY(-100%); }
.on-blue .pill--blue { background: #fff; color: var(--blue); }
.on-blue .pill--blue .pill__dot { color: var(--blue); }
@media (max-width: 1024px) {
  .process__stage { aspect-ratio: 3 / 2; align-self: start; }
  .co text { font-size: 48px; stroke-width: 12px; }
}
@media (max-width: 760px) { .hero__lead { font-size: 21px; } }

/* ===================== v2: categories, WebGL, split strip, breakdown ===================== */
.gl-canvas { position: fixed; inset: 0; width: 100%; height: 100%; z-index: -1; pointer-events: none; }
.gl-on img[data-gl].gl-ready { opacity: 0; }
.gl-on .card__media, .gl-on .tile__img { background: transparent; }

/* split-char titles */
.split-chars.split-ready { overflow: hidden; }
.split-chars.split-ready .ch { display: inline-block; transform: translateY(105%) rotate(6deg); transform-origin: left bottom; transition: transform 1s var(--ease); }
.split-chars.split-ready.in .ch { transform: none; }

/* kinetic marquee */
.kinetic { padding: clamp(40px, 6vw, 90px) 0; overflow: hidden; display: grid; gap: 4px; }
.kinetic__row { display: flex; align-items: center; gap: .35em; width: max-content; white-space: nowrap; font-size: clamp(56px, 9vw, 150px); font-weight: 700; letter-spacing: -.05em; line-height: 1.05; will-change: transform; }
.kinetic__row i { font-style: normal; color: var(--blue); font-size: .6em; }
.kinetic__row--out { color: transparent; -webkit-text-stroke: 1.5px var(--ink); }
.kinetic__row--out i { -webkit-text-stroke: 0; color: var(--ink); }

/* filters */
.filters { display: flex; flex-wrap: wrap; gap: 8px; padding: 0 var(--pad); margin-bottom: clamp(28px, 4vw, 56px); }
.chip { display: inline-flex; align-items: center; gap: 4px; height: 44px; padding: 0 18px; border-radius: 999px; background: #fff; font-size: 15px; font-weight: 600; transition: background .3s, color .3s, transform .4s var(--ease); }
.chip sup { font-size: 10px; opacity: .55; margin-top: -10px; }
.chip:hover { background: #e3e6f0; }
.chip.on { background: var(--ink); color: #fff; }
.chip:focus-visible, .pill:focus-visible { outline: 2px solid var(--blue); outline-offset: 3px; }

/* work grid v2: two columns, natural image ratios, staggered */
.work__grid { grid-template-columns: repeat(2, minmax(0, 1fr)); align-items: start; transition: opacity .3s; }
.work__grid.is-switching { opacity: 0; }
.card, .card:nth-child(n) { grid-column: auto; margin-top: 0; }
.card:nth-child(even of :not([hidden])) { margin-top: 14vh; }
.card[hidden] { display: none; }
.card__media, .card--tall .card__media, .card--square .card__media { aspect-ratio: auto; width: 100%; max-width: 100%; }
.card--tall .card__media { width: min(100%, calc(78vh * var(--ar))); }
.card__media img { height: 100%; object-fit: cover; transform: none !important; }
.card__cat { font-size: 12px; font-weight: 600; letter-spacing: .06em; color: var(--blue); margin-bottom: 8px; }

/* horizontal product split */
.hscroll { position: relative; background: var(--ink); color: #fff; }
.hscroll__sticky { position: sticky; top: 0; height: 100vh; overflow: hidden; display: grid; grid-template-rows: auto 1fr auto; padding-block: 96px 32px; }
.hscroll__head { display: flex; justify-content: space-between; align-items: end; gap: 24px; padding: 0 var(--pad); flex-wrap: wrap; }
.hscroll__head h2 { font-size: clamp(48px, 7vw, 120px); font-weight: 700; letter-spacing: -.05em; }
.hscroll__head p { font-size: 13px; color: rgba(255, 255, 255, .6); max-width: 420px; letter-spacing: .03em; }
.hscroll__track { display: flex; align-items: center; gap: clamp(14px, 1.6vw, 24px); padding: 0 var(--pad); width: max-content; will-change: transform; }
.tile { margin: 0; display: grid; gap: 12px; }
.tile__img { height: min(56vh, 520px); aspect-ratio: var(--ar); max-width: 86vw; border-radius: 16px; overflow: hidden; background: #1c1c22; }
.tile__img img { width: 100%; height: 100%; object-fit: cover; }
.tile figcaption { font-size: 13px; color: rgba(255, 255, 255, .7); display: flex; gap: 10px; }
.tile figcaption b { color: #fff; }
.hscroll__bar { margin: 0 var(--pad); height: 2px; background: rgba(255, 255, 255, .15); }
.hscroll__bar i { display: block; height: 100%; width: 0; background: #fff; }

/* breakdown v2 */
.bd { --n: 4; height: calc(var(--n) * 230vh + 100vh); position: relative; background: #fff; }
.bd__sticky { position: sticky; top: 0; height: 100vh; display: grid; grid-template-columns: minmax(280px, 3.6fr) 8.4fr; gap: clamp(20px, 3vw, 48px); padding: 96px var(--pad) var(--pad); }
.bd__side { display: flex; flex-direction: column; justify-content: center; gap: 24px; min-width: 0; }
.bd__eyebrow { font-size: 12px; font-weight: 600; letter-spacing: .12em; }
.bd__title { font-size: clamp(38px, 4.3vw, 72px); font-weight: 700; letter-spacing: -.045em; white-space: nowrap; }
.bd__products { list-style: none; margin: 0; padding: 0; display: grid; gap: 6px; }
.bd__products li { display: grid; grid-template-columns: 30px 1fr auto; align-items: center; gap: 4px 10px; padding: 12px 14px; border-radius: 14px; cursor: pointer; opacity: .45; transition: opacity .3s, background .3s; }
.bd__products li.on { opacity: 1; background: var(--bg); }
.bd__products b { font-size: 12px; color: var(--blue); }
.bd__products span { font-size: 18px; font-weight: 600; }
.bd__products em { font-style: normal; font-size: 12px; color: var(--muted); }
.bd__prog { grid-column: 1 / -1; height: 2px; background: var(--line); border-radius: 2px; overflow: hidden; display: block; }
.bd__prog i { display: block; height: 100%; width: 0; background: var(--blue); }
.bd__steps { list-style: none; margin: 0; padding: 0; display: flex; flex-wrap: wrap; gap: 6px; }
.bd__steps li { font-size: 12px; font-weight: 600; padding: 6px 12px; border-radius: 999px; background: var(--bg); color: var(--muted); transition: background .3s, color .3s; }
.bd__steps li.on { background: var(--blue); color: #fff; }
.bd__stage { position: relative; display: grid; place-items: center; border-radius: var(--r); background: radial-gradient(120% 90% at 50% 40%, #f6f7fb, #e7e9f1); overflow: hidden; perspective: 1700px; min-width: 0; }
.bd__stage.swap .bd__box { animation: bdSwap .9s var(--ease); }
@keyframes bdSwap { from { opacity: 0; transform: translateY(40px) scale(.96); } to { opacity: 1; transform: none; } }
.bd__box { position: relative; transform-style: preserve-3d; }
.bd__stack { position: absolute; inset: 0; transform-style: preserve-3d; will-change: transform; }
.bd__layer { position: absolute; inset: 0; border-radius: 18px; overflow: hidden; background: #fff; box-shadow: 0 30px 60px -30px rgba(10, 14, 40, calc(.15 + var(--e, 0) * .35)); will-change: transform, clip-path; }
.bd__layer img { width: 100%; height: 100%; object-fit: cover; display: block; }
.bd__layer span { position: absolute; left: 14px; top: 14px; font-size: 12px; font-weight: 700; background: var(--ink); color: #fff; padding: 5px 10px; border-radius: 999px; opacity: var(--e, 0); letter-spacing: .04em; }
.bd__line img { filter: url(#lineart) contrast(1.4); }
.bd__grid { position: absolute; inset: 0; background-image: linear-gradient(rgba(26, 47, 251, .08) 1px, transparent 1px), linear-gradient(90deg, rgba(26, 47, 251, .08) 1px, transparent 1px); background-size: 36px 36px; mix-blend-mode: multiply; }
.bd__clay img { filter: grayscale(1) contrast(1.08) brightness(1.12); }
.bd__mat img { filter: saturate(.45) contrast(1.05) brightness(1.03) hue-rotate(-8deg); }
.bd__scan { position: absolute; top: 0; bottom: 0; width: 2px; left: 0; background: var(--blue); box-shadow: 0 0 24px 4px rgba(26, 47, 251, .45); opacity: 0; pointer-events: none; }
.bd__scan::after { content: "AI"; position: absolute; top: 14px; left: 8px; font-size: 11px; font-weight: 700; color: #fff; background: var(--blue); padding: 3px 7px; border-radius: 999px; letter-spacing: .1em; }
.bd__callouts { position: absolute; inset: 0; pointer-events: none; }
.co { position: absolute; width: 0; height: 0; }
.co i { position: absolute; left: -8px; top: -8px; width: 16px; height: 16px; border-radius: 50%; background: var(--blue); border: 3px solid #fff; transform: scale(0); transition: transform .5s var(--ease) var(--d); animation: pulse 1.8s infinite; }
@keyframes pulse { 0% { box-shadow: 0 0 0 0 rgba(26, 47, 251, .5); } 70% { box-shadow: 0 0 0 14px rgba(26, 47, 251, 0); } 100% { box-shadow: 0 0 0 0 rgba(26, 47, 251, 0); } }
.co span { position: absolute; top: -48px; white-space: nowrap; font-size: 14px; font-weight: 700; background: #fff; color: var(--ink); padding: 7px 12px; border-radius: 999px; box-shadow: 0 10px 30px -10px rgba(0, 0, 0, .3); opacity: 0; transform: translateY(8px); transition: opacity .4s calc(var(--d) + .2s), transform .6s var(--ease) calc(var(--d) + .2s); }
.co--r span { left: 14px; }
.co--l span { right: 14px; }
.show-callouts .co i { transform: scale(1); }
.show-callouts .co span { opacity: 1; transform: none; }
.bd__tag { position: absolute; left: 18px; bottom: 18px; background: var(--ink); color: #fff; font-size: 13px; font-weight: 600; padding: 8px 14px; border-radius: 999px; letter-spacing: .04em; }

/* curtain transition */
.curtain { position: fixed; inset: 0; z-index: 75; background: var(--blue); color: #fff; display: grid; place-items: center; transform: translateY(100%); pointer-events: none; }
.curtain.in { transform: translateY(0); transition: transform .65s cubic-bezier(.76, 0, .24, 1); }
.curtain.in.out { transform: translateY(-100%); transition: transform .8s cubic-bezier(.76, 0, .24, 1); }
.curtain__title { font-size: clamp(36px, 6vw, 96px); font-weight: 700; letter-spacing: -.04em; padding: 0 var(--pad); text-align: center; }
.case.instant { transition: none; }

/* case gallery v2: complete images with index */
.case__gallery { align-items: start; }
.case__gallery figure { background: none; border-radius: 0; display: grid; gap: 8px; }
.case__img { border-radius: var(--r); overflow: hidden; background: #e3e6ee; margin: 0 auto; width: 100%; }
.case__gallery figure.full .case__img { max-width: min(100%, calc(88vh * var(--far, 3))); }
.case__img img { width: 100%; height: 100%; max-height: none; object-fit: contain; }
.case__gallery figcaption { font-size: 12px; color: var(--muted); font-weight: 600; letter-spacing: .06em; }

@media (max-width: 1024px) {
  .bd__sticky { grid-template-columns: 1fr; grid-template-rows: auto 1fr; padding-top: 84px; gap: 14px; }
  .bd__side { gap: 12px; }
  .bd__products { grid-template-columns: repeat(4, minmax(0, 1fr)); }
  .bd__products li { grid-template-columns: 1fr; padding: 8px; }
  .bd__products em, .bd__products b { display: none; }
  .bd__products span { font-size: 13px; }
}
@media (max-width: 760px) {
  .work__grid { grid-template-columns: 1fr; }
  .card:nth-child(even of :not([hidden])) { margin-top: 0; }
  .card--tall .card__media { width: 100%; }
  .bd__title { font-size: 34px; }
  .bd__steps li { font-size: 11px; padding: 5px 9px; }
  .co span { font-size: 11px; padding: 5px 8px; top: -38px; }
  .tile__img { height: 46vh; }
  .kinetic__row { font-size: 52px; }
}
.gl-canvas { z-index: 1; }
.card__media { transform: none; }
.card__tags { z-index: 2; }
.tile__img { height: min(46vh, 440px); }

/* ===================== v3: 3D product structure & use ===================== */
.lab3 { height: calc(4 * 260vh + 100vh); position: relative; background: var(--dark); color: #fff; border-radius: var(--r) var(--r) 0 0; margin-top: calc(-1 * var(--r)); }
.lab3__sticky { position: sticky; top: 0; height: 100vh; display: grid; grid-template-columns: minmax(280px, 3.6fr) 8.4fr; gap: clamp(20px, 3vw, 48px); padding: 96px var(--pad) var(--pad); }
.lab3__side { display: flex; flex-direction: column; justify-content: center; gap: 22px; min-width: 0; }
.lab3__title { font-size: clamp(38px, 4.3vw, 72px); font-weight: 700; letter-spacing: -.045em; white-space: nowrap; }
.lab3 .bd__products li.on { background: rgba(255, 255, 255, .08); }
.lab3 .bd__prog { background: rgba(255, 255, 255, .15); }
.lab3__phases { list-style: none; margin: 0; padding: 4px; display: inline-flex; gap: 4px; background: rgba(255, 255, 255, .08); border-radius: 999px; align-self: flex-start; }
.lab3__phases li { font-size: 13px; font-weight: 600; padding: 8px 16px; border-radius: 999px; cursor: pointer; color: rgba(255, 255, 255, .6); transition: background .35s, color .35s; }
.lab3__phases li.on { background: #fff; color: var(--ink); }
.lab3__desc { font-size: 15px; line-height: 1.7; color: rgba(255, 255, 255, .72); max-width: 420px; min-height: 5.1em; }
.lab3__stage { position: relative; border-radius: var(--r); overflow: hidden; min-width: 0; cursor: grab; touch-action: pan-y;
  background: radial-gradient(90% 80% at 50% 45%, #2a2e3d 0%, #15161d 60%, #0d0e12 100%); }
.lab3__stage:active { cursor: grabbing; }
.lab3__stage canvas { position: absolute; inset: 0; width: 100%; height: 100%; display: block; }
.lab3__stage.swap canvas { animation: bdSwap .9s var(--ease); }
.lab3__stage::after { content: ""; position: absolute; left: 10%; right: 10%; bottom: 8%; height: 1px; background: linear-gradient(90deg, transparent, rgba(255, 255, 255, .18), transparent); pointer-events: none; }
.lab3__labels { position: absolute; inset: 0; pointer-events: none; }
.l3 { position: absolute; left: 0; top: 0; opacity: 0; will-change: transform; }
.l3 i { position: absolute; left: -5px; top: -5px; width: 10px; height: 10px; border-radius: 50%; background: var(--blue); border: 2px solid #fff; }
.l3 span { position: absolute; left: 10px; top: -36px; white-space: nowrap; font-size: 12px; font-weight: 700; color: var(--ink); background: #fff; padding: 5px 10px; border-radius: 999px; box-shadow: 0 8px 24px -8px rgba(0, 0, 0, .5); }
.l3 span::before { content: ""; position: absolute; left: -6px; top: 100%; width: 1.5px; height: 18px; background: rgba(255, 255, 255, .8); transform: rotate(35deg); transform-origin: top; }
.lab3__hud { position: absolute; right: 18px; top: 18px; display: grid; gap: 6px; opacity: 0; transform: translateY(-8px); transition: opacity .5s, transform .6s var(--ease); pointer-events: none; }
.lab3__hud.on { opacity: 1; transform: none; }
.lab3__hud div { display: flex; justify-content: space-between; gap: 18px; min-width: 190px; padding: 8px 14px; border-radius: 12px; background: rgba(255, 255, 255, .08); backdrop-filter: blur(10px); -webkit-backdrop-filter: blur(10px); font-size: 12px; }
.lab3__hud span { color: rgba(255, 255, 255, .6); }
.lab3__hud b { font-variant-numeric: tabular-nums; font-weight: 700; }
.lab3__hint { position: absolute; left: 18px; bottom: 16px; font-size: 12px; color: rgba(255, 255, 255, .5); letter-spacing: .06em; pointer-events: none; }
@media (max-width: 1024px) {
  .lab3__sticky { grid-template-columns: 1fr; grid-template-rows: auto 1fr; padding-top: 84px; gap: 12px; }
  .lab3__side { gap: 10px; }
  .lab3__products { grid-template-columns: repeat(4, minmax(0, 1fr)); }
  .lab3__desc { font-size: 13px; min-height: 0; }
}
@media (max-width: 760px) {
  .lab3__title { font-size: 34px; }
  .lab3__hud div { min-width: 150px; padding: 6px 10px; font-size: 11px; }
  .l3 span { font-size: 10px; padding: 4px 7px; }
}

/* ===================== v4: 3D product theatre (real GLB models) ===================== */
.sc { height: calc(3 * 420vh + 100vh); position: relative; background: #0d0d10; }
.sc__sticky { position: sticky; top: 0; height: 100vh; padding: 0; }
.sc__stage { --bg1: #2a2a30; --bg2: #0d0d10; --tint: transparent; position: absolute; inset: 0; overflow: hidden; color: #fff; cursor: grab; touch-action: pan-y;
  background: radial-gradient(70% 70% at 58% 52%, var(--bg1) 0%, var(--bg2) 75%); transition: background 1s; }
.sc__stage:active { cursor: grabbing; }
.sc__stage::before { content: ""; position: absolute; inset: 0; background: radial-gradient(40% 40% at 60% 60%, var(--tint), transparent 70%); opacity: .25; transition: background .8s; pointer-events: none; }
.sc__stage canvas { position: absolute; inset: 0; width: 100%; height: 100%; display: block; }
.sc__stage.swap canvas { animation: bdSwap 1s var(--ease); }
.sc__big { position: absolute; left: 58%; top: 50%; transform: translate(-50%, -50%); font-size: clamp(110px, 21vw, 360px); font-weight: 700; letter-spacing: -.06em; line-height: .8; white-space: nowrap; color: transparent; -webkit-text-stroke: 1.5px rgba(255, 255, 255, .16); pointer-events: none; user-select: none; }
.sc__labels { position: absolute; inset: 0; pointer-events: none; }
.sc-l { position: absolute; left: 0; top: 0; opacity: 0; will-change: transform; }
.sc-l i { position: absolute; left: -5px; top: -5px; width: 10px; height: 10px; border-radius: 50%; background: #fff; box-shadow: 0 0 0 4px rgba(255, 255, 255, .18); }
.sc-l span { position: absolute; left: 18px; top: -11px; white-space: nowrap; font-size: 12px; font-weight: 600; letter-spacing: .04em; color: #fff; padding-left: 26px; }
.sc-l span::before { content: ""; position: absolute; left: 0; top: 50%; width: 20px; height: 1px; background: rgba(255, 255, 255, .7); }
.sc__head { position: absolute; top: 96px; left: var(--pad); right: var(--pad); display: flex; justify-content: space-between; gap: 16px; font-size: 12px; letter-spacing: .1em; font-weight: 600; pointer-events: none; }
.sc__hint { color: rgba(255, 255, 255, .5); }
.sc__text { position: absolute; left: var(--pad); top: 50%; transform: translateY(-46%); width: min(380px, 40vw); pointer-events: none; }
.sc__text > * { opacity: 0; transform: translateY(24px); transition: opacity .6s, transform .9s var(--ease); }
.sc__text.in > * { opacity: 1; transform: none; }
.sc__text.in > :nth-child(2) { transition-delay: .06s; } .sc__text.in > :nth-child(3) { transition-delay: .12s; } .sc__text.in > :nth-child(4) { transition-delay: .18s; }
.sc__text h3 { font-size: clamp(34px, 3.6vw, 60px); font-weight: 700; letter-spacing: -.04em; line-height: 1.05; margin: 10px 0 14px; text-wrap: balance; }
.sc-no { font-size: 12px; letter-spacing: .12em; color: rgba(255, 255, 255, .55); font-weight: 600; }
.sc-tag, .sc-desc { font-size: 16px; line-height: 1.75; color: rgba(255, 255, 255, .78); }
.sc__text dl { display: grid; grid-template-columns: repeat(3, auto); gap: 22px; margin: 26px 0 0; justify-content: start; }
.sc__text dt { font-size: 11px; letter-spacing: .1em; color: rgba(255, 255, 255, .5); }
.sc__text dd { margin: 4px 0 0; font-size: 22px; font-weight: 700; font-variant-numeric: tabular-nums; }
.sc-list { list-style: none; padding: 0; margin: 6px 0 0; display: grid; gap: 2px; counter-reset: x; }
.sc-list li { display: flex; gap: 14px; align-items: baseline; font-size: 15px; padding: 7px 0; border-top: 1px solid rgba(255, 255, 255, .12); }
.sc-list b { font-size: 11px; color: rgba(255, 255, 255, .45); font-variant-numeric: tabular-nums; }
.sc__use { position: absolute; right: var(--pad); bottom: 108px; display: flex; gap: 8px; flex-wrap: wrap; justify-content: flex-end; opacity: 0; transform: translateY(12px); transition: opacity .5s, transform .6s var(--ease); pointer-events: none; }
.sc[data-phase="3"] .sc__use { opacity: 1; transform: none; pointer-events: auto; }
.sc__use button { height: 40px; padding: 0 16px; border-radius: 999px; background: rgba(255, 255, 255, .1); backdrop-filter: blur(10px); -webkit-backdrop-filter: blur(10px); color: #fff; font-size: 13px; font-weight: 600; display: inline-flex; align-items: center; gap: 8px; transition: background .3s, color .3s; }
.sc__use button:hover { background: rgba(255, 255, 255, .2); }
.sc__use button.on { background: #fff; color: var(--ink); }
.sc__use .sw i { width: 14px; height: 14px; border-radius: 50%; background: var(--c); box-shadow: inset 0 0 0 1px rgba(255, 255, 255, .4); }
.sc__nav { position: absolute; left: var(--pad); right: var(--pad); bottom: 28px; display: grid; grid-template-columns: repeat(3, minmax(0, 1fr)); gap: 14px; }
.sc__nav button { display: grid; grid-template-columns: auto 1fr; gap: 6px 10px; text-align: left; color: rgba(255, 255, 255, .5); font-size: 13px; font-weight: 600; transition: color .3s; }
.sc__nav button.on { color: #fff; }
.sc__nav b { font-size: 11px; font-variant-numeric: tabular-nums; }
.sc__nav button > i { grid-column: 1 / -1; height: 2px; background: rgba(255, 255, 255, .15); border-radius: 2px; overflow: hidden; display: block; }
.sc__nav button > i i { display: block; height: 100%; width: 0; background: #fff; }
.sc__load { position: absolute; left: 50%; top: 50%; transform: translate(-50%, -50%); font-size: 13px; letter-spacing: .1em; color: rgba(255, 255, 255, .7); opacity: 0; transition: opacity .3s; pointer-events: none; }
.sc__load.on { opacity: 1; }
.sc__load::before { content: ""; display: block; width: 36px; height: 36px; margin: 0 auto 12px; border-radius: 50%; border: 2px solid rgba(255, 255, 255, .2); border-top-color: #fff; animation: spin 1s linear infinite; }
@keyframes spin { to { transform: rotate(360deg); } }
@media (max-width: 760px) {
  .sc__text { top: auto; bottom: 150px; transform: none; width: auto; right: var(--pad); }
  .sc__text h3 { font-size: 30px; margin: 6px 0 8px; }
  .sc-tag, .sc-desc { font-size: 14px; }
  .sc-list { grid-template-columns: 1fr 1fr; column-gap: 12px; }
  .sc-list li { font-size: 12px; padding: 4px 0; }
  .sc__text dl { margin-top: 12px; }
  .sc__big { font-size: 34vw; top: 34%; }
  .sc__use { bottom: 92px; left: var(--pad); justify-content: flex-start; }
  .sc__nav span { font-size: 11px; }
  .sc-l span { font-size: 10px; }
}

/* ===================== v5: scroll story (all works by wheel alone) ===================== */
.story { padding-top: clamp(80px, 10vw, 160px); }
.story .sec-head { margin-bottom: clamp(40px, 6vw, 90px); }
.scn { position: relative; --sbg: #0f1015; --sfg: #fff; --smuted: rgba(255, 255, 255, .62); background: var(--sbg); color: var(--sfg); }
.tone-dark { --sbg: #101116; }
.tone-black { --sbg: #070708; }
.tone-light { --sbg: #eef0f5; --sfg: var(--ink); --smuted: var(--muted); }
.tone-navy { --sbg: #0d1326; }
.tone-warm { --sbg: #ece6dd; --sfg: #1c1712; --smuted: #6f655a; }
.scn__pin { position: sticky; top: 0; height: 100vh; overflow: hidden; }
.scn__stage, .scn__inner { position: absolute; inset: 0; }
.scn__inner { transform-style: preserve-3d; transform-origin: var(--cx) var(--cy); }
.it { position: absolute; left: var(--cx); top: var(--cy); margin: 0; border-radius: 18px; overflow: hidden; background: rgba(127, 127, 127, .12); box-shadow: 0 40px 80px -40px rgba(0, 0, 0, .55); will-change: transform; backface-visibility: hidden; }
.it img { width: 100%; height: 100%; object-fit: cover; display: block; }
.tone-light .it, .tone-warm .it { box-shadow: 0 40px 80px -45px rgba(20, 20, 40, .45); }

/* info panel */
.scn__info { position: absolute; left: var(--pad); bottom: 12vh; width: min(30vw, 400px); z-index: 300; pointer-events: none; }
.scn__info > * { opacity: 0; transform: translateY(26px); transition: opacity .7s, transform 1s var(--ease); }
.scn__info.in > * { opacity: 1; transform: none; }
.scn__info.in > :nth-child(2) { transition-delay: .06s; } .scn__info.in > :nth-child(3) { transition-delay: .12s; } .scn__info.in > :nth-child(4) { transition-delay: .18s; } .scn__info.in > :nth-child(5) { transition-delay: .24s; }
.scn__no { font-size: 12px; font-weight: 600; letter-spacing: .12em; color: var(--smuted); }
.scn__title { font-size: clamp(30px, 3.2vw, 54px); font-weight: 700; letter-spacing: -.04em; line-height: 1.05; margin: 12px 0 10px; text-wrap: balance; }
.scn__en { font-size: 13px; color: var(--smuted); letter-spacing: .04em; }
.scn__desc { font-size: 15px; line-height: 1.75; color: var(--smuted); margin-top: 16px; }
.scn__count { margin-top: 22px; font-size: 13px; color: var(--smuted); font-variant-numeric: tabular-nums; }
.scn__count b { font-size: 44px; font-weight: 700; color: var(--sfg); letter-spacing: -.04em; margin-right: 4px; }
.scn__cap { font-size: 13px; }
.scn__bar { position: absolute; left: var(--pad); right: var(--pad); bottom: 28px; height: 2px; background: color-mix(in srgb, var(--sfg) 15%, transparent); z-index: 300; }
.scn__bar i { display: block; height: 100%; width: 0; background: var(--sfg); }
/* full-bleed scenes: info sits over a soft gradient */
.scn--zoom .scn__pin::after, .scn--hscroll .scn__pin::after, .scn--ring .scn__pin::after, .scn--assemble .scn__pin::after, .scn--accordion .scn__pin::after {
  content: ""; position: absolute; left: 0; bottom: 0; width: 46vw; height: 60vh; background: radial-gradient(80% 80% at 0% 100%, var(--sbg) 30%, transparent 75%); z-index: 250; pointer-events: none; }

/* type-specific placement */
.scn--hscroll .it, .scn--accordion .it { left: 0; top: 50%; }
.scn--columns .it { left: 0; top: 0; }
.scn--assemble .it { left: 0; top: 0; }
.scn--accordion .it img { object-fit: cover; object-position: center; }
.scn--accordion .it.on { box-shadow: 0 50px 100px -40px rgba(0, 0, 0, .5); }
.scn--zoom .it { transition: border-radius .2s; }
.scn--flip .it { transform-origin: 50% 0; }

/* blinds: 7 vertical strips of the same image drop in one after another */
.blinds { position: absolute; inset: 0; display: flex; z-index: 1; }
.blinds i { flex: 1; height: 100%; background-size: var(--w) var(--h); background-position: calc(var(--j) * var(--w) / -7) 0; background-repeat: no-repeat;
  transform: translateY(calc((1 - clamp(0, var(--t, 0) - var(--j) * 0.08, 1)) * -102%)); }
.scn--blinds .it img { opacity: 0; }
.scn--blinds .it.done img { opacity: 1; }
.scn--blinds .it.done .blinds { visibility: hidden; }
.scn--blinds .it { overflow: hidden; }

/* chapter interlude */
.scn--interlude .scn__pin { display: grid; place-items: center; }
.intr { text-align: center; padding: 0 var(--pad); }
.intr__no, .intr__en, .intr__meta { font-size: 13px; font-weight: 600; letter-spacing: .14em; color: var(--smuted); }
.intr__en { margin-top: 18px; font-size: clamp(14px, 1.4vw, 20px); letter-spacing: .3em; }
.intr__meta { margin-top: 10px; }
.intr__word { font-size: clamp(80px, 17vw, 300px); font-weight: 900; letter-spacing: -.06em; line-height: 1; margin-top: 14px; white-space: nowrap; will-change: transform; }
.intr__word span { display: inline-block; --k: clamp(0, calc(var(--in, 0) * 1.7 - var(--i) * 0.16), 1);
  transform: translateY(calc((1 - var(--k)) * 110%)) rotate(calc((1 - var(--k)) * 14deg)); opacity: var(--k); }

@media (max-width: 760px) {
  .scn__info { top: 76px; bottom: auto; width: auto; right: var(--pad); }
  .scn__title { font-size: 26px; margin: 6px 0 4px; }
  .scn__desc { display: none; }
  .scn__count { margin-top: 8px; }
  .scn__count b { font-size: 26px; }
  .scn--zoom .scn__pin::after, .scn--hscroll .scn__pin::after, .scn--ring .scn__pin::after, .scn--assemble .scn__pin::after, .scn--accordion .scn__pin::after { display: none; }
  .it { border-radius: 12px; }
}
@media (prefers-reduced-motion: reduce) { .intr__word span { transform: none; opacity: 1; } }
.scn__stage { z-index: 1; }
.scn__pin::after { z-index: 2 !important; }
.scn__info, .scn__bar { z-index: 3; }
.scn--blinds .it { background: none; }