:root {
  color-scheme: dark;
  --bg: #050505;
  --panel: #0b0b0b;
  --panel-soft: #111;
  --text: #f2f2f0;
  --muted: #9a9a96;
  --line: rgba(255, 255, 255, 0.15);
  --line-strong: rgba(255, 255, 255, 0.34);
  --signal: #baff25;
  --max: 1400px;
  --pad: clamp(20px, 4vw, 64px);
  --display: "Arial Narrow", "Helvetica Neue", Arial, sans-serif;
  --body: Inter, "Helvetica Neue", "Yu Gothic", YuGothic, Arial, sans-serif;
}

* { box-sizing: border-box; }
html { scroll-behavior: smooth; background: var(--bg); }
body { margin: 0; background: var(--bg); color: var(--text); font-family: var(--body); line-height: 1.55; -webkit-font-smoothing: antialiased; }
img, video { display: block; max-width: 100%; }
a { color: inherit; text-decoration: none; }
button { color: inherit; font: inherit; }
[data-copy="ja"] { display: none; }
html[data-lang="ja"] [data-copy="en"] { display: none; }
html[data-lang="ja"] [data-copy="ja"] { display: initial; }

.skip-link { position: fixed; z-index: 999; top: 10px; left: 10px; padding: 10px 14px; background: var(--text); color: #000; transform: translateY(-160%); }
.skip-link:focus { transform: translateY(0); }

.site-header { position: fixed; z-index: 20; inset: 0 0 auto; height: 78px; padding: 0 var(--pad); display: flex; align-items: center; justify-content: space-between; border-bottom: 1px solid transparent; transition: background .3s, border-color .3s, height .3s; }
.site-header.is-scrolled { height: 64px; background: rgba(5, 5, 5, .86); border-color: var(--line); backdrop-filter: blur(18px); }
.brand img { width: clamp(130px, 12vw, 170px); height: auto; }
.desktop-nav { display: flex; gap: 34px; font-size: 11px; letter-spacing: .17em; text-transform: uppercase; }
.desktop-nav a, .footer-meta a { transition: color .2s; }
.desktop-nav a:hover, .footer-meta a:hover { color: var(--signal); }
.header-actions { display: flex; align-items: center; gap: 24px; }
.language-switcher { display: flex; align-items: center; gap: 6px; color: var(--muted); font-size: 10px; letter-spacing: .12em; }
.language-switcher button { padding: 6px 2px; border: 0; background: transparent; cursor: pointer; color: inherit; }
.language-switcher button[aria-pressed="true"] { color: var(--text); }
.header-cta { min-width: 72px; padding: 9px 14px; border: 1px solid var(--line-strong); text-align: center; font-size: 11px; letter-spacing: .15em; text-transform: uppercase; transition: background .2s, color .2s; }
.header-cta:hover { background: var(--text); color: #000; }

.hero { min-height: 100svh; position: relative; overflow: hidden; display: grid; align-items: end; padding: 130px var(--pad) clamp(60px, 9vh, 110px); }
.hero-media, .hero-scrim, .hero-grid { position: absolute; inset: 0; width: 100%; height: 100%; }
.hero-media { object-fit: cover; object-position: center; filter: contrast(1.12) brightness(.7); }
.hero-scrim { background: linear-gradient(90deg, rgba(0,0,0,.76) 0%, rgba(0,0,0,.35) 50%, rgba(0,0,0,.1) 100%), linear-gradient(0deg, rgba(0,0,0,.75), transparent 55%); }
.hero-grid { opacity: .18; background-image: linear-gradient(rgba(255,255,255,.12) 1px, transparent 1px), linear-gradient(90deg, rgba(255,255,255,.12) 1px, transparent 1px); background-size: 80px 80px; mask-image: linear-gradient(90deg, #000, transparent 65%); }
.hero-content { position: relative; z-index: 2; width: min(850px, 92%); }
.eyebrow { display: flex; align-items: center; gap: 10px; margin: 0 0 22px; color: #d6d6d2; font-size: 10px; font-weight: 600; letter-spacing: .2em; text-transform: uppercase; }
.pulse { width: 7px; height: 7px; border-radius: 50%; background: var(--signal); box-shadow: 0 0 18px var(--signal); }
.hero h1 { margin: 0; max-width: 850px; font-family: var(--display); font-size: clamp(62px, 10.7vw, 164px); font-weight: 500; line-height: .79; letter-spacing: -.065em; text-transform: uppercase; }
.hero-lede { max-width: 540px; margin: 34px 0 0; color: #c2c2bf; font-size: clamp(14px, 1.35vw, 18px); }
.hero-actions { display: flex; flex-wrap: wrap; gap: 10px; margin-top: 34px; }
.button { display: inline-flex; justify-content: space-between; align-items: center; gap: 42px; min-width: 220px; padding: 15px 18px; border: 1px solid var(--line-strong); font-size: 11px; font-weight: 650; letter-spacing: .11em; text-transform: uppercase; transition: transform .2s, background .2s, color .2s, border-color .2s; }
.button:hover { transform: translateY(-2px); }
.button-primary { background: var(--text); color: #050505; border-color: var(--text); }
.button-primary:hover { background: var(--signal); border-color: var(--signal); }
.button-ghost { backdrop-filter: blur(8px); }
.button-ghost:hover { border-color: var(--text); }
.button-light { background: #050505; color: var(--text); border-color: #050505; }
.button-light:hover { background: transparent; color: #050505; }
.hero-index { position: absolute; z-index: 2; right: var(--pad); bottom: clamp(60px, 9vh, 110px); display: grid; gap: 5px; color: #a8a8a4; text-align: right; font: 9px/1.4 ui-monospace, SFMono-Regular, Consolas, monospace; letter-spacing: .12em; }

.signal-band { overflow: hidden; border-block: 1px solid var(--line); background: var(--signal); color: #090909; }
.marquee-track { width: max-content; display: flex; align-items: center; gap: 28px; padding: 12px 0; animation: marquee 24s linear infinite; font-family: var(--display); font-size: 13px; font-weight: 700; letter-spacing: .22em; }
.marquee-track i { width: 5px; height: 5px; background: #090909; border-radius: 50%; }
@keyframes marquee { to { transform: translateX(-50%); } }

.section { max-width: var(--max); margin: 0 auto; padding: clamp(90px, 13vw, 190px) var(--pad); }
.section-label { display: grid; grid-template-columns: 70px 1fr; gap: 18px; margin-bottom: clamp(60px, 8vw, 110px); color: var(--muted); font: 10px/1 ui-monospace, SFMono-Regular, Consolas, monospace; letter-spacing: .16em; }
.section-label span:last-child { padding-left: 18px; border-left: 1px solid var(--line-strong); }
.kicker { margin: 0 0 18px; color: var(--signal); font-size: 10px; font-weight: 650; letter-spacing: .17em; text-transform: uppercase; }
.intro { display: grid; grid-template-columns: minmax(150px, .55fr) minmax(0, 1.45fr); gap: 40px; }
.intro .section-label { display: flex; gap: 24px; align-items: flex-start; }
.intro .section-label span:last-child { padding-left: 18px; }
.intro-copy h2, .section-heading h2, .protocol-intro h2, .origin h2, .final-cta h2 { margin: 0; font-family: var(--display); font-weight: 500; letter-spacing: -.045em; line-height: .98; text-transform: uppercase; }
.intro-copy h2 { max-width: 1000px; font-size: clamp(42px, 6.5vw, 96px); }
.intro-copy > p:last-child { width: min(650px, 90%); margin: 44px 0 0 auto; color: var(--muted); font-size: clamp(15px, 1.4vw, 19px); }

.products { border-top: 1px solid var(--line); }
.section-heading { display: flex; justify-content: space-between; align-items: end; gap: 40px; margin-bottom: 50px; }
.section-heading h2 { max-width: 750px; font-size: clamp(42px, 6vw, 82px); }
.section-heading p { max-width: 330px; margin: 0; color: var(--muted); }
.product-grid { display: grid; grid-template-columns: repeat(2, minmax(0, 1fr)); gap: clamp(14px, 2vw, 28px); }
.product-card { border-top: 1px solid var(--line-strong); padding-top: 14px; }
.product-image { position: relative; overflow: hidden; display: grid; place-items: center; aspect-ratio: 4 / 5; padding: clamp(18px, 3.5vw, 52px); background: #f3f3ef; }
.product-image::before { content: "PRODUCT / AMAZON US + JP"; position: absolute; z-index: 2; right: 14px; bottom: 12px; color: #64645f; font: 8px/1 ui-monospace, SFMono-Regular, Consolas, monospace; letter-spacing: .14em; }
.product-image::after { content: ""; position: absolute; inset: 0; border: 1px solid transparent; transition: border-color .25s; }
.product-image:hover::after { border-color: var(--signal); }
.product-image img { width: 100%; height: 100%; object-fit: contain; filter: contrast(1.035); transition: transform .55s cubic-bezier(.22,.61,.36,1), filter .3s; }
.product-image:hover img { transform: scale(1.025); filter: contrast(1.08); }
.product-badge { position: absolute; top: 16px; left: 16px; z-index: 2; padding: 7px 9px; background: var(--signal); color: #080808; font-size: 9px; font-weight: 700; letter-spacing: .14em; text-transform: uppercase; }
.product-info { display: flex; justify-content: space-between; align-items: start; gap: 20px; padding: 18px 2px 34px; }
.product-info h3 { margin: 0; font-size: 13px; letter-spacing: .1em; }
.product-info p { margin: 5px 0 0; color: var(--muted); font-size: 12px; }
.product-info > a { padding-bottom: 3px; border-bottom: 1px solid var(--line-strong); font-size: 10px; letter-spacing: .08em; text-transform: uppercase; white-space: nowrap; }
.product-info > a:hover { color: var(--signal); border-color: var(--signal); }
.market-note { margin: 10px 0 0; color: var(--muted); font-size: 11px; }

.protocol { border-top: 1px solid var(--line); }
.protocol-intro { max-width: 1000px; margin-left: auto; }
.protocol-intro h2 { font-size: clamp(52px, 8vw, 118px); }
.protocol-list { margin-top: clamp(70px, 10vw, 140px); border-top: 1px solid var(--line-strong); }
.protocol-item { display: grid; grid-template-columns: 90px minmax(170px, .65fr) minmax(240px, 1fr); gap: 24px; align-items: start; padding: 38px 0; border-bottom: 1px solid var(--line); }
.protocol-number { color: var(--signal); font: 11px ui-monospace, SFMono-Regular, Consolas, monospace; }
.protocol-item h3 { margin: 0; font-family: var(--display); font-size: clamp(34px, 4.5vw, 64px); font-weight: 500; line-height: 1; letter-spacing: -.02em; }
.protocol-item p { max-width: 520px; margin: 4px 0 0; color: var(--muted); }

.manifesto { position: relative; min-height: min(70vw, 880px); overflow: hidden; display: grid; place-items: center; }
.manifesto img, .manifesto-overlay { position: absolute; inset: 0; width: 100%; height: 100%; }
.manifesto img { object-fit: cover; filter: grayscale(1) contrast(1.25); transform: scale(1.04); }
.manifesto-overlay { background: rgba(0,0,0,.5); }
.manifesto blockquote { position: relative; z-index: 1; margin: 0; padding: var(--pad); text-align: center; }
.manifesto p { margin: 0; font-family: var(--display); font-size: clamp(36px, 6vw, 92px); font-weight: 500; letter-spacing: -.045em; line-height: 1; text-transform: uppercase; }

.origin-grid { display: grid; grid-template-columns: 1.15fr .85fr; gap: clamp(50px, 10vw, 150px); }
.origin h2 { max-width: 780px; font-size: clamp(52px, 7vw, 104px); }
.origin-copy { padding-top: 30px; border-top: 1px solid var(--line-strong); color: var(--muted); font-size: clamp(15px, 1.35vw, 18px); }
.origin-copy p { margin: 0 0 28px; }
.founder-card { margin-top: 54px; padding-top: 20px; display: grid; grid-template-columns: 76px 1fr; gap: 20px; align-items: center; border-top: 1px solid var(--line-strong); }
.founder-monogram { width: 76px; height: 76px; display: grid; place-items: center; border: 1px solid var(--line-strong); background: var(--signal); color: #050505; font-family: var(--display); font-size: 38px; line-height: 1; }
.founder-identity { display: grid; }
.founder-index { margin-bottom: 5px; color: var(--signal); font: 8px/1 ui-monospace, SFMono-Regular, Consolas, monospace; letter-spacing: .15em; }
.founder-identity strong { color: var(--text); font-family: var(--display); font-size: clamp(28px, 3vw, 42px); font-weight: 500; letter-spacing: .08em; line-height: 1; }
.founder-identity p { margin: 8px 0 0; color: var(--muted); font-size: 10px; letter-spacing: .1em; text-transform: uppercase; }

.final-cta { min-height: 74vh; padding: clamp(90px, 12vw, 180px) var(--pad); display: flex; flex-direction: column; align-items: center; justify-content: center; background: var(--signal); color: #050505; text-align: center; }
.final-cta .eyebrow { color: #161616; }
.final-cta .pulse { background: #050505; box-shadow: none; }
.final-cta h2 { margin-bottom: 42px; font-size: clamp(62px, 10vw, 150px); }

.site-footer { padding: 70px var(--pad) 28px; display: grid; grid-template-columns: 1fr auto; gap: 50px; border-top: 1px solid var(--line); }
.footer-brand img { width: 160px; }
.footer-brand p { margin: 18px 0 0; color: var(--muted); font-size: 12px; }
.footer-meta { display: flex; flex-wrap: wrap; justify-content: flex-end; gap: 24px; align-items: start; color: var(--muted); font-size: 10px; letter-spacing: .1em; text-transform: uppercase; }
.disclosure { grid-column: 1 / -1; margin: 40px 0 0; padding-top: 18px; border-top: 1px solid var(--line); color: #686865; font-size: 9px; }

.reveal { opacity: 0; transform: translateY(24px); transition: opacity .8s ease, transform .8s cubic-bezier(.22,.61,.36,1); }
.reveal.is-visible { opacity: 1; transform: none; }
.legal-page { max-width: 820px; margin: 0 auto; padding: 140px var(--pad) 100px; }
.legal-page h1 { font-family: var(--display); font-size: clamp(50px, 8vw, 92px); font-weight: 500; letter-spacing: -.04em; }
.legal-page h2 { margin-top: 50px; font-size: 20px; }
.legal-page p, .legal-page li { color: var(--muted); }
.back-link { display: inline-block; margin-bottom: 30px; color: var(--signal); font-size: 11px; letter-spacing: .1em; text-transform: uppercase; }

@media (max-width: 820px) {
  .site-header { height: 66px; }
  .desktop-nav { display: none; }
  .header-actions { gap: 14px; }
  .header-cta { min-width: 60px; padding-inline: 10px; }
  .hero { align-items: end; background: #050505; }
  .hero-media { inset: 66px 0 auto; height: 50svh; min-height: 340px; max-height: 520px; object-position: 58% center; }
  .hero-scrim { background: linear-gradient(0deg, #050505 0%, rgba(5,5,5,.96) 24%, rgba(5,5,5,.42) 54%, rgba(5,5,5,.08) 80%), linear-gradient(90deg, rgba(0,0,0,.38), transparent 75%); }
  .hero-grid { opacity: .1; }
  .hero-content { width: 100%; }
  .hero-index { display: none; }
  .hero h1 { font-size: clamp(58px, 18vw, 110px); line-height: .82; }
  .hero-lede { max-width: 430px; }
  .button { min-width: min(100%, 280px); }
  .intro { display: block; }
  .intro .section-label { margin-bottom: 70px; }
  .intro-copy > p:last-child { width: 100%; margin-left: 0; }
  .section-heading { display: block; }
  .section-heading p { margin-top: 24px; }
  .product-grid { grid-template-columns: 1fr; }
  .product-image { aspect-ratio: 4 / 4.8; padding: clamp(22px, 8vw, 54px); }
  .protocol-item { grid-template-columns: 44px 1fr; }
  .protocol-item p { grid-column: 2; }
  .origin-grid { grid-template-columns: 1fr; }
  .site-footer { grid-template-columns: 1fr; }
  .footer-meta { justify-content: flex-start; }
}

@media (max-width: 480px) {
  .brand img { width: 118px; }
  .language-switcher span { display: none; }
  .hero { padding-bottom: 44px; }
  .hero-actions { display: grid; }
  .button { width: 100%; }
  .product-info { display: block; }
  .product-info > a { display: inline-block; margin-top: 14px; }
  .protocol-item { padding: 30px 0; }
  .final-cta { min-height: 65vh; }
}

@media (prefers-reduced-motion: reduce) {
  *, *::before, *::after { scroll-behavior: auto !important; animation-duration: .001ms !important; animation-iteration-count: 1 !important; transition-duration: .001ms !important; }
  .reveal { opacity: 1; transform: none; }
}